Workspace.java revision 9551537718c191a829fd285890833225c023203d
131dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project/*
231dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project * Copyright (C) 2008 The Android Open Source Project
331dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project *
431dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License");
531dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project * you may not use this file except in compliance with the License.
631dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project * You may obtain a copy of the License at
731dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project *
831dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project *      http://www.apache.org/licenses/LICENSE-2.0
931dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project *
1031dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project * Unless required by applicable law or agreed to in writing, software
1131dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS,
1231dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
1331dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project * See the License for the specific language governing permissions and
1431dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project * limitations under the License.
1531dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project */
1631dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project
17a5902524d4403885eb4c50360bf3465c6be796efJoe Onoratopackage com.android.launcher2;
1831dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project
190280c3be4d9f8fc6fdf015b7ecd276eb26f76f2dMichael Jurkaimport android.animation.Animator;
20b1254a6bdb11024042fb6c27e179210c1bbd6e1cChet Haaseimport android.animation.AnimatorSet;
210280c3be4d9f8fc6fdf015b7ecd276eb26f76f2dMichael Jurkaimport android.animation.ObjectAnimator;
22cd68ff5b88de9b5136ff5a9ef698e4db2fc5db66Patrick Dubroyimport android.animation.TimeInterpolator;
23cd68ff5b88de9b5136ff5a9ef698e4db2fc5db66Patrick Dubroyimport android.animation.ValueAnimator;
24cd68ff5b88de9b5136ff5a9ef698e4db2fc5db66Patrick Dubroyimport android.animation.ValueAnimator.AnimatorUpdateListener;
2568846fdce6c01bbe474bd0c8307e1ccaac161cbcWinson Chungimport android.app.AlertDialog;
268f573952b8729b4319043ae0908997ecd2d68951Dianne Hackbornimport android.app.WallpaperManager;
27bed61d22bdbfcdbe04f92675c7751b83c7a8947cMichael Jurkaimport android.appwidget.AppWidgetHostView;
28629de3ef739883c0962423cc0c3a26299f162d3dRomain Guyimport android.appwidget.AppWidgetManager;
29629de3ef739883c0962423cc0c3a26299f162d3dRomain Guyimport android.appwidget.AppWidgetProviderInfo;
30a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chungimport android.content.ClipData;
31a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chungimport android.content.ClipDescription;
32495f2892288504f4ab87e62957b3f71144dd73c2Adam Powellimport android.content.ComponentName;
3331dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Projectimport android.content.Context;
3431dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Projectimport android.content.Intent;
357247f6315baf16eacb3286f21bd80321385c1defPatrick Dubroyimport android.content.res.Resources;
3631dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Projectimport android.content.res.TypedArray;
374be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onoratoimport android.graphics.Bitmap;
386b879f0a5885274a85333531e091283405d490ccAdam Lesinskiimport android.graphics.Camera;
3931dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Projectimport android.graphics.Canvas;
40a63c452f5bd491ba9b28c332ccedc6c6c7e2f3ccMichael Jurkaimport android.graphics.Matrix;
41a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chungimport android.graphics.Paint;
42b8c69f3c17a40adc2d85e8e996f754c383c293dcWinson Chungimport android.graphics.Point;
4370fc438583779ef903541bf9ec546a8235a18785Winson Chungimport android.graphics.PorterDuff;
4431dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Projectimport android.graphics.Rect;
45a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chungimport android.graphics.RectF;
464be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onoratoimport android.graphics.Region.Op;
47f96811cdf564469a7a654a0c876288c9fd14f35eThe Android Open Source Projectimport android.graphics.drawable.Drawable;
48956091ba7863bd72086275e61084864994dd6fa7Joe Onoratoimport android.os.IBinder;
49495f2892288504f4ab87e62957b3f71144dd73c2Adam Powellimport android.os.Parcelable;
5031dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Projectimport android.util.AttributeSet;
51b26f3d6a8c62e7c1a603b6c7979375d8dd4f20d4Winson Chungimport android.util.DisplayMetrics;
52291ad12232c98e383d44d76ffe09e97e204c61bcDaniel Sandlerimport android.util.Log;
53580e27748137ff08599aa719d106b31215a28353Winson Chungimport android.util.Pair;
54a34abf8c781485b788fddacb352d586bffca886cWinson Chungimport android.view.Display;
55a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chungimport android.view.DragEvent;
5631dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Projectimport android.view.MotionEvent;
5731dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Projectimport android.view.View;
587044272f180d34ab29866f6c59ee75376e8a1df5Winson Chungimport android.view.ViewConfiguration;
596e3140865d3f0def2e55934d8b0b2c1503386e54Winson Chungimport android.view.ViewGroup;
60bed61d22bdbfcdbe04f92675c7751b83c7a8947cMichael Jurkaimport android.view.View.MeasureSpec;
6161b0c69d3fe331d3de338322396d5de691d58613Winson Chungimport android.view.animation.AccelerateInterpolator;
62cd68ff5b88de9b5136ff5a9ef698e4db2fc5db66Patrick Dubroyimport android.view.animation.DecelerateInterpolator;
63a6427b15c18d5b8f3078f553d78f8432de9f46e9Winson Chungimport android.widget.ImageView;
64f96811cdf564469a7a654a0c876288c9fd14f35eThe Android Open Source Projectimport android.widget.TextView;
65a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chungimport android.widget.Toast;
6631dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project
676639687cd67bab1aeef2a75e5c6bc458b20dc082Adam Cohenimport com.android.launcher.R;
6819072da7441e07d5e90026d9e9e1b38f11245e44Adam Cohenimport com.android.launcher2.FolderIcon.FolderRingAnimator;
696639687cd67bab1aeef2a75e5c6bc458b20dc082Adam Cohenimport com.android.launcher2.InstallWidgetReceiver.WidgetMimeTypeHandlerData;
70edcce099c98a6c40d10109ac092ab50f9d2668f3Romain Guy
71716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohenimport java.util.ArrayList;
72716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohenimport java.util.HashSet;
73716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohenimport java.util.List;
74716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohen
7531dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project/**
760142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka * The workspace is a wide area with a wallpaper and a finite number of pages.
770142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka * Each page contains a number of icons, folders or widgets the user can
78aafa03cbb925c74be1c13f8bb99d928be429e62fWinson Chung * interact with. A workspace is meant to be used with a fixed width only.
7931dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project */
800142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurkapublic class Workspace extends SmoothPagedView
81d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka        implements DropTarget, DragSource, DragScroller, View.OnTouchListener,
82bed61d22bdbfcdbe04f92675c7751b83c7a8947cMichael Jurka        DragController.DragListener, LauncherTransitionable {
83e47f55c30b9c24f01f2be861247c92f17fbe4a61Romain Guy    @SuppressWarnings({"UnusedDeclaration"})
843a8820bdbad90642cf5cda4b00a8c92ecb699159Joe Onorato    private static final String TAG = "Launcher.Workspace";
850142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka
86f34bab59fc0260f926aec44d044883dce1b4191fAdam Cohen    // Y rotation to apply to the workspace screens
87f34bab59fc0260f926aec44d044883dce1b4191fAdam Cohen    private static final float WORKSPACE_ROTATION = 12.5f;
88b5ba097015c4794fa822f30b38a60a7070a00097Adam Cohen    private static final float WORKSPACE_OVERSCROLL_ROTATION = 24f;
89cff6af81d721415785bddc2efd74e179d2def9daAdam Cohen    private static float CAMERA_DISTANCE = 6500;
90a985e598f6071f4caca15ba3cb6b2cd3e38b217dAdam Cohen
9168d739365bf650fe7fecf99cd3bfe63a0d41bd12Adam Cohen    private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0;
9268d739365bf650fe7fecf99cd3bfe63a0d41bd12Adam Cohen    private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375;
939171e6d8a2b7b5aa136617b9779a8bbadc5259f7Winson Chung    private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100;
94f34bab59fc0260f926aec44d044883dce1b4191fAdam Cohen
95f135c6c364e92cddb84c1b4a94ed535214b712a6Winson Chung    private static final int BACKGROUND_FADE_OUT_DURATION = 350;
96ed51cc9a12c50d12e7d30ed209a49f1a40858043Adam Cohen    private static final int ADJACENT_SCREEN_DROP_DURATION = 300;
97265b9a66542148e0ff13971001cb9461065e1e0eAdam Cohen    private static final int FLING_THRESHOLD_VELOCITY = 500;
98ed51cc9a12c50d12e7d30ed209a49f1a40858043Adam Cohen
999171e6d8a2b7b5aa136617b9779a8bbadc5259f7Winson Chung    // These animators are used to fade the children's outlines
1009171e6d8a2b7b5aa136617b9779a8bbadc5259f7Winson Chung    private ObjectAnimator mChildrenOutlineFadeInAnimation;
1019171e6d8a2b7b5aa136617b9779a8bbadc5259f7Winson Chung    private ObjectAnimator mChildrenOutlineFadeOutAnimation;
1029171e6d8a2b7b5aa136617b9779a8bbadc5259f7Winson Chung    private float mChildrenOutlineAlpha = 0;
1039171e6d8a2b7b5aa136617b9779a8bbadc5259f7Winson Chung
1049171e6d8a2b7b5aa136617b9779a8bbadc5259f7Winson Chung    // These properties refer to the background protection gradient used for AllApps and Customize
105e0f5a61a1f105216b0067124bacac69194c0ef70Michael Jurka    private ValueAnimator mBackgroundFadeInAnimation;
106e0f5a61a1f105216b0067124bacac69194c0ef70Michael Jurka    private ValueAnimator mBackgroundFadeOutAnimation;
1079171e6d8a2b7b5aa136617b9779a8bbadc5259f7Winson Chung    private Drawable mBackground;
10825356e75ebae5d6e0be43f38d2c73b5cb59d05f2Michael Jurka    boolean mDrawBackground = true;
109f34bab59fc0260f926aec44d044883dce1b4191fAdam Cohen    private float mBackgroundAlpha = 0;
11068d739365bf650fe7fecf99cd3bfe63a0d41bd12Adam Cohen    private float mOverScrollMaxBackgroundAlpha = 0.0f;
111e0f66b546994a9bdee452851c17a148db02ec300Adam Cohen    private int mOverScrollPageIndex = -1;
112f34bab59fc0260f926aec44d044883dce1b4191fAdam Cohen
113beff8c6a13d5b5ad69f5a85ee0150cecd28e6341Adam Cohen    private float mWallpaperScrollRatio = 1.0f;
114beff8c6a13d5b5ad69f5a85ee0150cecd28e6341Adam Cohen
1158f573952b8729b4319043ae0908997ecd2d68951Dianne Hackborn    private final WallpaperManager mWallpaperManager;
1169c6fbed48783dacd9bc6b4ec5f2cc8e59ec7ee37Michael Jurka    private IBinder mWindowToken;
1171670698ff3502548aa066e32c28ecf62c5592a34Michael Jurka    private static final float WALLPAPER_SCREENS_SPAN = 2f;
118aafa03cbb925c74be1c13f8bb99d928be429e62fWinson Chung
1190142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka    private int mDefaultPage;
12031dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project
12131dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    /**
12231dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project     * CellInfo for the cell that is currently being dragged
12331dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project     */
12431dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    private CellLayout.CellInfo mDragInfo;
125aafa03cbb925c74be1c13f8bb99d928be429e62fWinson Chung
12670864289fba6daf07b8de98524cdfb765a62552dJeff Sharkey    /**
12770864289fba6daf07b8de98524cdfb765a62552dJeff Sharkey     * Target drop area calculated during last acceptDrop call.
12870864289fba6daf07b8de98524cdfb765a62552dJeff Sharkey     */
129c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen    private int[] mTargetCell = new int[2];
13031dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project
1316569f2c80e179c2f8ed73dae6b01d971ec20f005Patrick Dubroy    /**
1326569f2c80e179c2f8ed73dae6b01d971ec20f005Patrick Dubroy     * The CellLayout that is currently being dragged over
1336569f2c80e179c2f8ed73dae6b01d971ec20f005Patrick Dubroy     */
1346569f2c80e179c2f8ed73dae6b01d971ec20f005Patrick Dubroy    private CellLayout mDragTargetLayout = null;
1358a18afc4aa7217e293e0e96a23ac1cedaabc3738Adam Cohen    private boolean mDragHasEnteredWorkspace = false;
1366569f2c80e179c2f8ed73dae6b01d971ec20f005Patrick Dubroy
13731dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    private Launcher mLauncher;
1380589f0f66ce498512c6ee47482c649d88294c9d0Joe Onorato    private IconCache mIconCache;
13900acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato    private DragController mDragController;
140aafa03cbb925c74be1c13f8bb99d928be429e62fWinson Chung
1414516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka    // These are temporary variables to prevent having to allocate a new object just to
1424516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka    // return an (x, y) value from helper functions. Do NOT use them to maintain other state.
14331dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    private int[] mTempCell = new int[2];
14470864289fba6daf07b8de98524cdfb765a62552dJeff Sharkey    private int[] mTempEstimate = new int[2];
145e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen    private float[] mDragViewVisualCenter = new float[2];
146a63c452f5bd491ba9b28c332ccedc6c6c7e2f3ccMichael Jurka    private float[] mTempDragCoordinates = new float[2];
1474516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka    private float[] mTempCellLayoutCenterCoordinates = new float[2];
148a63c452f5bd491ba9b28c332ccedc6c6c7e2f3ccMichael Jurka    private float[] mTempDragBottomRightCoordinates = new float[2];
1490280c3be4d9f8fc6fdf015b7ecd276eb26f76f2dMichael Jurka    private Matrix mTempInverseMatrix = new Matrix();
15031dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project
151c2f7f4794867cd1b3e97fd0f379ad8ad15958a6cMichael Jurka    private SpringLoadedDragController mSpringLoadedDragController;
152b26f3d6a8c62e7c1a603b6c7979375d8dd4f20d4Winson Chung    private float mSpringLoadedShrinkFactor;
153d3ef3065ab0941567c45e9aec98783138b623c68Michael Jurka
154d22015cd37ea6ef53762eca5be57daca123ff607Adam Cohen    private static final int DEFAULT_CELL_COUNT_X = 4;
155d22015cd37ea6ef53762eca5be57daca123ff607Adam Cohen    private static final int DEFAULT_CELL_COUNT_Y = 4;
15631dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project
1571262e369484ce7f2565655ed80e6299232c70bd7Patrick Dubroy    // State variable that indicates whether the pages are small (ie when you're
158dee0589388ba0f6373912e18bf86243282fb3b9bMichael Jurka    // in all apps or customize mode)
159d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka
160d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka    enum State { NORMAL, SPRING_LOADED, SMALL };
1617777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen    private State mState = State.NORMAL;
162d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka    private boolean mIsSwitchingState = false;
163d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka
164d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka    boolean mAnimatingViewIntoPlace = false;
165d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka    boolean mIsDragOccuring = false;
166d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka    boolean mChildrenLayersEnabled = true;
167dee0589388ba0f6373912e18bf86243282fb3b9bMichael Jurka
16854fa3b95557c283976e8c1aa8a157b460b0b4513Patrick Dubroy    /** Is the user is dragging an item near the edge of a page? */
1691262e369484ce7f2565655ed80e6299232c70bd7Patrick Dubroy    private boolean mInScrollArea = false;
1701262e369484ce7f2565655ed80e6299232c70bd7Patrick Dubroy
1718e58e916061cbe2623697efac0924f2aa3753a92Patrick Dubroy    private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper();
1724be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato    private Bitmap mDragOutline = null;
1738e58e916061cbe2623697efac0924f2aa3753a92Patrick Dubroy    private final Rect mTempRect = new Rect();
1748e58e916061cbe2623697efac0924f2aa3753a92Patrick Dubroy    private final int[] mTempXY = new int[2];
17521b411074e39fd10cbc8dd0220bb159da4af2c76Adam Cohen    private float mOverscrollFade = 0;
1764be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato
177a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung    // Paint used to draw external drop outline
178a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung    private final Paint mExternalDragOutlinePaint = new Paint();
179a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung
1806b879f0a5885274a85333531e091283405d490ccAdam Lesinski    // Camera and Matrix used to determine the final position of a neighboring CellLayout
1816b879f0a5885274a85333531e091283405d490ccAdam Lesinski    private final Matrix mMatrix = new Matrix();
1826b879f0a5885274a85333531e091283405d490ccAdam Lesinski    private final Camera mCamera = new Camera();
1836b879f0a5885274a85333531e091283405d490ccAdam Lesinski    private final float mTempFloat2[] = new float[2];
1846b879f0a5885274a85333531e091283405d490ccAdam Lesinski
185c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka    enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM };
186c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka    int mWallpaperWidth;
187c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka    int mWallpaperHeight;
188ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka    WallpaperOffsetInterpolator mWallpaperOffset;
189c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka    boolean mUpdateWallpaperOffsetImmediately = false;
19026976d9b53161f80faf822d482ac771b8621cf31Adam Cohen    private Runnable mDelayedResizeRunnable;
191cff6af81d721415785bddc2efd74e179d2def9daAdam Cohen    private int mDisplayWidth;
192cff6af81d721415785bddc2efd74e179d2def9daAdam Cohen    private int mDisplayHeight;
1939551537718c191a829fd285890833225c023203dMichael Jurka    private boolean mIsStaticWallpaper;
194cff6af81d721415785bddc2efd74e179d2def9daAdam Cohen    private int mWallpaperTravelWidth;
195c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka
19619072da7441e07d5e90026d9e9e1b38f11245e44Adam Cohen    // Variables relating to the creation of user folders by hovering shortcuts over shortcuts
197c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen    private static final int FOLDER_CREATION_TIMEOUT = 250;
19819072da7441e07d5e90026d9e9e1b38f11245e44Adam Cohen    private final Alarm mFolderCreationAlarm = new Alarm();
19919072da7441e07d5e90026d9e9e1b38f11245e44Adam Cohen    private FolderRingAnimator mDragFolderRingAnimator = null;
20019072da7441e07d5e90026d9e9e1b38f11245e44Adam Cohen    private View mLastDragOverView = null;
20119072da7441e07d5e90026d9e9e1b38f11245e44Adam Cohen    private boolean mCreateUserFolderOnDrop = false;
202073a46ff635d089cbcb15d939d1de42dd2b86c97Adam Cohen
203f8d2823d885ba682140aee1ae0504c1c5e67a24bAdam Cohen    // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget)
204f8d2823d885ba682140aee1ae0504c1c5e67a24bAdam Cohen    private float mXDown;
205f8d2823d885ba682140aee1ae0504c1c5e67a24bAdam Cohen    private float mYDown;
206f8d2823d885ba682140aee1ae0504c1c5e67a24bAdam Cohen    final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6;
207f8d2823d885ba682140aee1ae0504c1c5e67a24bAdam Cohen    final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3;
208f8d2823d885ba682140aee1ae0504c1c5e67a24bAdam Cohen    final static float TOUCH_SLOP_DAMPING_FACTOR = 4;
209f8d2823d885ba682140aee1ae0504c1c5e67a24bAdam Cohen
210ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen    // Relating to the animation of items being dropped externally
211ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen    public static final int ANIMATE_INTO_POSITION = 0;
212ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen    public static final int COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION = 1;
213ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen    public static final int CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION = 2;
214ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen
215867ca62c0e4b811d46734ff940d59c7a787525c8Winson Chung    // Relating to workspace drag fade out
216867ca62c0e4b811d46734ff940d59c7a787525c8Winson Chung    private float mDragFadeOutAlpha;
217867ca62c0e4b811d46734ff940d59c7a787525c8Winson Chung    private int mDragFadeOutDuration;
218867ca62c0e4b811d46734ff940d59c7a787525c8Winson Chung
2194b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen    // These variables are used for storing the initial and final values during workspace animations
220ed51cc9a12c50d12e7d30ed209a49f1a40858043Adam Cohen    private int mSavedScrollX;
221ed51cc9a12c50d12e7d30ed209a49f1a40858043Adam Cohen    private float mSavedRotationY;
222ed51cc9a12c50d12e7d30ed209a49f1a40858043Adam Cohen    private float mSavedTranslationX;
2234b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen    private float mCurrentScaleX;
2244b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen    private float mCurrentScaleY;
2254b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen    private float mCurrentRotationY;
2264b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen    private float mCurrentTranslationX;
2274b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen    private float mCurrentTranslationY;
2284b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen    private float[] mOldTranslationXs;
2294b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen    private float[] mOldTranslationYs;
2304b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen    private float[] mOldScaleXs;
2314b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen    private float[] mOldScaleYs;
2324b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen    private float[] mOldBackgroundAlphas;
2334b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen    private float[] mOldBackgroundAlphaMultipliers;
2344b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen    private float[] mOldAlphas;
2354b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen    private float[] mOldRotationYs;
2364b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen    private float[] mNewTranslationXs;
2374b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen    private float[] mNewTranslationYs;
2384b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen    private float[] mNewScaleXs;
2394b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen    private float[] mNewScaleYs;
2404b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen    private float[] mNewBackgroundAlphas;
2414b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen    private float[] mNewBackgroundAlphaMultipliers;
2424b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen    private float[] mNewAlphas;
2434b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen    private float[] mNewRotationYs;
2447044272f180d34ab29866f6c59ee75376e8a1df5Winson Chung    private float mTransitionProgress;
2454b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen
24631dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    /**
24731dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project     * Used to inflate the Workspace from XML.
24831dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project     *
24931dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project     * @param context The application's context.
2500142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka     * @param attrs The attributes set containing the Workspace's customization values.
25131dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project     */
25231dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    public Workspace(Context context, AttributeSet attrs) {
25331dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project        this(context, attrs, 0);
25431dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    }
25531dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project
25631dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    /**
25731dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project     * Used to inflate the Workspace from XML.
25831dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project     *
25931dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project     * @param context The application's context.
2600142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka     * @param attrs The attributes set containing the Workspace's customization values.
26131dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project     * @param defStyle Unused.
26231dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project     */
26331dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    public Workspace(Context context, AttributeSet attrs, int defStyle) {
26431dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project        super(context, attrs, defStyle);
2650142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka        mContentIsRefreshable = false;
2665f1c509d5ad1954a7e38e77db4d5f27c7345fd39Michael Jurka
267f0ea4d3378be7b962c8e0bce2392df5e82491fb8Winson Chung        // With workspace, data is available straight from the get-go
268f0ea4d3378be7b962c8e0bce2392df5e82491fb8Winson Chung        setDataIsReady();
269f0ea4d3378be7b962c8e0bce2392df5e82491fb8Winson Chung
270867ca62c0e4b811d46734ff940d59c7a787525c8Winson Chung        final Resources res = getResources();
271867ca62c0e4b811d46734ff940d59c7a787525c8Winson Chung        mFadeInAdjacentScreens = res.getBoolean(R.bool.config_workspaceFadeAdjacentScreens);
272867ca62c0e4b811d46734ff940d59c7a787525c8Winson Chung        mDragFadeOutAlpha = res.getInteger(R.integer.config_dragFadeOutAlpha) / 100f;
273867ca62c0e4b811d46734ff940d59c7a787525c8Winson Chung        mDragFadeOutDuration = res.getInteger(R.integer.config_dragFadeOutDuration);
2748f573952b8729b4319043ae0908997ecd2d68951Dianne Hackborn        mWallpaperManager = WallpaperManager.getInstance(context);
275aafa03cbb925c74be1c13f8bb99d928be429e62fWinson Chung
276f6440da9d02f3ee1553db4bd431a202eb1d1a9ddMichael Jurka        int cellCountX = DEFAULT_CELL_COUNT_X;
277f6440da9d02f3ee1553db4bd431a202eb1d1a9ddMichael Jurka        int cellCountY = DEFAULT_CELL_COUNT_Y;
278f6440da9d02f3ee1553db4bd431a202eb1d1a9ddMichael Jurka
279aafa03cbb925c74be1c13f8bb99d928be429e62fWinson Chung        TypedArray a = context.obtainStyledAttributes(attrs,
280aafa03cbb925c74be1c13f8bb99d928be429e62fWinson Chung                R.styleable.Workspace, defStyle, 0);
281f6440da9d02f3ee1553db4bd431a202eb1d1a9ddMichael Jurka
282f6440da9d02f3ee1553db4bd431a202eb1d1a9ddMichael Jurka        if (LauncherApplication.isScreenLarge()) {
283f61249b79948a4b37b38104cbe81c98086d1f30bMichael Jurka            // Determine number of rows/columns dynamically
284f61249b79948a4b37b38104cbe81c98086d1f30bMichael Jurka            // TODO: This code currently fails on tablets with an aspect ratio < 1.3.
285f61249b79948a4b37b38104cbe81c98086d1f30bMichael Jurka            // Around that ratio we should make cells the same size in portrait and
286f61249b79948a4b37b38104cbe81c98086d1f30bMichael Jurka            // landscape
287f6440da9d02f3ee1553db4bd431a202eb1d1a9ddMichael Jurka            TypedArray actionBarSizeTypedArray =
288f6440da9d02f3ee1553db4bd431a202eb1d1a9ddMichael Jurka                context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize });
289a61dc4290d14f802909ed9abb8f8e14cf1793f9dWinson Chung            DisplayMetrics displayMetrics = res.getDisplayMetrics();
290f61249b79948a4b37b38104cbe81c98086d1f30bMichael Jurka            final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f);
291f61249b79948a4b37b38104cbe81c98086d1f30bMichael Jurka            final float systemBarHeight = res.getDimension(R.dimen.status_bar_height);
292a61dc4290d14f802909ed9abb8f8e14cf1793f9dWinson Chung            final float smallestScreenDim = res.getConfiguration().smallestScreenWidthDp *
293a61dc4290d14f802909ed9abb8f8e14cf1793f9dWinson Chung                    displayMetrics.density;
294f6440da9d02f3ee1553db4bd431a202eb1d1a9ddMichael Jurka
295f61249b79948a4b37b38104cbe81c98086d1f30bMichael Jurka            cellCountX = 1;
296f61249b79948a4b37b38104cbe81c98086d1f30bMichael Jurka            while (CellLayout.widthInPortrait(res, cellCountX + 1) <= smallestScreenDim) {
297f61249b79948a4b37b38104cbe81c98086d1f30bMichael Jurka                cellCountX++;
298f6440da9d02f3ee1553db4bd431a202eb1d1a9ddMichael Jurka            }
299f6440da9d02f3ee1553db4bd431a202eb1d1a9ddMichael Jurka
300f61249b79948a4b37b38104cbe81c98086d1f30bMichael Jurka            cellCountY = 1;
301f61249b79948a4b37b38104cbe81c98086d1f30bMichael Jurka            while (actionBarHeight + CellLayout.heightInLandscape(res, cellCountY + 1)
302f61249b79948a4b37b38104cbe81c98086d1f30bMichael Jurka                <= smallestScreenDim - systemBarHeight) {
303f61249b79948a4b37b38104cbe81c98086d1f30bMichael Jurka                cellCountY++;
304f6440da9d02f3ee1553db4bd431a202eb1d1a9ddMichael Jurka            }
305f6440da9d02f3ee1553db4bd431a202eb1d1a9ddMichael Jurka        }
306f6440da9d02f3ee1553db4bd431a202eb1d1a9ddMichael Jurka
307b26f3d6a8c62e7c1a603b6c7979375d8dd4f20d4Winson Chung        mSpringLoadedShrinkFactor =
308b26f3d6a8c62e7c1a603b6c7979375d8dd4f20d4Winson Chung            res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f;
309b26f3d6a8c62e7c1a603b6c7979375d8dd4f20d4Winson Chung
310f6440da9d02f3ee1553db4bd431a202eb1d1a9ddMichael Jurka        // if the value is manually specified, use that instead
311f6440da9d02f3ee1553db4bd431a202eb1d1a9ddMichael Jurka        cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX);
312f6440da9d02f3ee1553db4bd431a202eb1d1a9ddMichael Jurka        cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY);
3130142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka        mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1);
31431dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project        a.recycle();
31531dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project
316d22015cd37ea6ef53762eca5be57daca123ff607Adam Cohen        LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY);
3170d44e9482b95d8f163b28bf20131c4349185b589Joe Onorato        setHapticFeedbackEnabled(false);
3180142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka
319cff6af81d721415785bddc2efd74e179d2def9daAdam Cohen        mLauncher = (Launcher) context;
32031dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project        initWorkspace();
321c35afb2c9df8cc56c77bf21ce2eaa213f6f31251Winson Chung
322c35afb2c9df8cc56c77bf21ce2eaa213f6f31251Winson Chung        // Disable multitouch across the workspace/all apps/customize tray
323c35afb2c9df8cc56c77bf21ce2eaa213f6f31251Winson Chung        setMotionEventSplittingEnabled(true);
32431dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    }
32531dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project
326038f9d8bfb53288e7cf5812f62ec3d5b25fec965Michael Jurka    // estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each
327038f9d8bfb53288e7cf5812f62ec3d5b25fec965Michael Jurka    // dimension if unsuccessful
328038f9d8bfb53288e7cf5812f62ec3d5b25fec965Michael Jurka    public int[] estimateItemSize(int hSpan, int vSpan,
329038f9d8bfb53288e7cf5812f62ec3d5b25fec965Michael Jurka            PendingAddItemInfo pendingItemInfo, boolean springLoaded) {
330038f9d8bfb53288e7cf5812f62ec3d5b25fec965Michael Jurka        int[] size = new int[2];
331038f9d8bfb53288e7cf5812f62ec3d5b25fec965Michael Jurka        if (getChildCount() > 0) {
332038f9d8bfb53288e7cf5812f62ec3d5b25fec965Michael Jurka            CellLayout cl = (CellLayout) mLauncher.getWorkspace().getChildAt(0);
333038f9d8bfb53288e7cf5812f62ec3d5b25fec965Michael Jurka            RectF r = estimateItemPosition(cl, pendingItemInfo, 0, 0, hSpan, vSpan);
334038f9d8bfb53288e7cf5812f62ec3d5b25fec965Michael Jurka            size[0] = (int) r.width();
335038f9d8bfb53288e7cf5812f62ec3d5b25fec965Michael Jurka            size[1] = (int) r.height();
336038f9d8bfb53288e7cf5812f62ec3d5b25fec965Michael Jurka            if (springLoaded) {
337038f9d8bfb53288e7cf5812f62ec3d5b25fec965Michael Jurka                size[0] *= mSpringLoadedShrinkFactor;
338038f9d8bfb53288e7cf5812f62ec3d5b25fec965Michael Jurka                size[1] *= mSpringLoadedShrinkFactor;
339038f9d8bfb53288e7cf5812f62ec3d5b25fec965Michael Jurka            }
340038f9d8bfb53288e7cf5812f62ec3d5b25fec965Michael Jurka            return size;
341038f9d8bfb53288e7cf5812f62ec3d5b25fec965Michael Jurka        } else {
342038f9d8bfb53288e7cf5812f62ec3d5b25fec965Michael Jurka            size[0] = Integer.MAX_VALUE;
343038f9d8bfb53288e7cf5812f62ec3d5b25fec965Michael Jurka            size[1] = Integer.MAX_VALUE;
344038f9d8bfb53288e7cf5812f62ec3d5b25fec965Michael Jurka            return size;
345038f9d8bfb53288e7cf5812f62ec3d5b25fec965Michael Jurka        }
346038f9d8bfb53288e7cf5812f62ec3d5b25fec965Michael Jurka    }
347038f9d8bfb53288e7cf5812f62ec3d5b25fec965Michael Jurka    public RectF estimateItemPosition(CellLayout cl, ItemInfo pendingInfo,
348038f9d8bfb53288e7cf5812f62ec3d5b25fec965Michael Jurka            int hCell, int vCell, int hSpan, int vSpan) {
349038f9d8bfb53288e7cf5812f62ec3d5b25fec965Michael Jurka        RectF r = new RectF();
350038f9d8bfb53288e7cf5812f62ec3d5b25fec965Michael Jurka        cl.cellToRect(hCell, vCell, hSpan, vSpan, r);
351038f9d8bfb53288e7cf5812f62ec3d5b25fec965Michael Jurka        return r;
352038f9d8bfb53288e7cf5812f62ec3d5b25fec965Michael Jurka    }
353038f9d8bfb53288e7cf5812f62ec3d5b25fec965Michael Jurka
354c1f5d26675e9777a55076d41404208e6160ca483Michael Jurka    public void buildPageHardwareLayers() {
355c1f5d26675e9777a55076d41404208e6160ca483Michael Jurka        if (getWindowToken() != null) {
356c1f5d26675e9777a55076d41404208e6160ca483Michael Jurka            final int childCount = getChildCount();
357c1f5d26675e9777a55076d41404208e6160ca483Michael Jurka            for (int i = 0; i < childCount; i++) {
358c1f5d26675e9777a55076d41404208e6160ca483Michael Jurka                CellLayout cl = (CellLayout) getChildAt(i);
359c1f5d26675e9777a55076d41404208e6160ca483Michael Jurka                cl.buildChildrenLayer();
360c1f5d26675e9777a55076d41404208e6160ca483Michael Jurka            }
361c1f5d26675e9777a55076d41404208e6160ca483Michael Jurka        }
362c1f5d26675e9777a55076d41404208e6160ca483Michael Jurka    }
363c1f5d26675e9777a55076d41404208e6160ca483Michael Jurka
364d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka    public void onDragStart(DragSource source, Object info, int dragAction) {
365d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka        mIsDragOccuring = true;
366d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka        updateChildrenLayersEnabled();
367446e940fc8839173de12f1299b8c24f318d53a3fAdam Cohen        mLauncher.lockScreenOrientationOnLargeUI();
368867ca62c0e4b811d46734ff940d59c7a787525c8Winson Chung
369867ca62c0e4b811d46734ff940d59c7a787525c8Winson Chung        // Fade out the workspace slightly to highlight the currently dragging item
37061b0c69d3fe331d3de338322396d5de691d58613Winson Chung        animate().alpha(mDragFadeOutAlpha)
3719b0b2fefb2de9aca457ab1c38ffd08d7667f4065Winson Chung                 .setInterpolator(new AccelerateInterpolator(1.5f))
37261b0c69d3fe331d3de338322396d5de691d58613Winson Chung                 .setDuration(mDragFadeOutDuration)
37361b0c69d3fe331d3de338322396d5de691d58613Winson Chung                 .start();
374d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka    }
375d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka
376d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka    public void onDragEnd() {
377d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka        mIsDragOccuring = false;
378d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka        updateChildrenLayersEnabled();
379446e940fc8839173de12f1299b8c24f318d53a3fAdam Cohen        mLauncher.unlockScreenOrientationOnLargeUI();
380867ca62c0e4b811d46734ff940d59c7a787525c8Winson Chung
381867ca62c0e4b811d46734ff940d59c7a787525c8Winson Chung        // Fade the workspace back in after we have completed dragging
38261b0c69d3fe331d3de338322396d5de691d58613Winson Chung        animate().alpha(1f)
3839b0b2fefb2de9aca457ab1c38ffd08d7667f4065Winson Chung                 .setInterpolator(new DecelerateInterpolator(1.5f))
38461b0c69d3fe331d3de338322396d5de691d58613Winson Chung                 .setDuration(mDragFadeOutDuration)
38561b0c69d3fe331d3de338322396d5de691d58613Winson Chung                 .start();
386d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka    }
387d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka
38831dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    /**
38931dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project     * Initializes various states for this workspace.
39031dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project     */
3910142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka    protected void initWorkspace() {
3920589f0f66ce498512c6ee47482c649d88294c9d0Joe Onorato        Context context = getContext();
3930142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka        mCurrentPage = mDefaultPage;
3940142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka        Launcher.setScreen(mCurrentPage);
3950589f0f66ce498512c6ee47482c649d88294c9d0Joe Onorato        LauncherApplication app = (LauncherApplication)context.getApplicationContext();
3960589f0f66ce498512c6ee47482c649d88294c9d0Joe Onorato        mIconCache = app.getIconCache();
397a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung        mExternalDragOutlinePaint.setAntiAlias(true);
398cd68ff5b88de9b5136ff5a9ef698e4db2fc5db66Patrick Dubroy        setWillNotDraw(false);
3997777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen        setChildrenDrawnWithCacheEnabled(true);
40031dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project
401b4b7fa7c0383b6af58d73d3e024b91d586148cf8Winson Chung        try {
402b4b7fa7c0383b6af58d73d3e024b91d586148cf8Winson Chung            final Resources res = getResources();
403fd3385fe9e0f034b04f99d5d59a58d74fe040da4Winson Chung            mBackground = res.getDrawable(R.drawable.apps_customize_bg);
404b4b7fa7c0383b6af58d73d3e024b91d586148cf8Winson Chung        } catch (Resources.NotFoundException e) {
405b4b7fa7c0383b6af58d73d3e024b91d586148cf8Winson Chung            // In this case, we will skip drawing background protection
406b4b7fa7c0383b6af58d73d3e024b91d586148cf8Winson Chung        }
4079171e6d8a2b7b5aa136617b9779a8bbadc5259f7Winson Chung
408ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka        mWallpaperOffset = new WallpaperOffsetInterpolator();
409cff6af81d721415785bddc2efd74e179d2def9daAdam Cohen        Display display = mLauncher.getWindowManager().getDefaultDisplay();
410cff6af81d721415785bddc2efd74e179d2def9daAdam Cohen        mDisplayWidth = display.getWidth();
411cff6af81d721415785bddc2efd74e179d2def9daAdam Cohen        mDisplayHeight = display.getHeight();
412cff6af81d721415785bddc2efd74e179d2def9daAdam Cohen        mWallpaperTravelWidth = (int) (mDisplayWidth *
413cff6af81d721415785bddc2efd74e179d2def9daAdam Cohen                wallpaperTravelToScreenWidthRatio(mDisplayWidth, mDisplayHeight));
414265b9a66542148e0ff13971001cb9461065e1e0eAdam Cohen
415265b9a66542148e0ff13971001cb9461065e1e0eAdam Cohen        mFlingThresholdVelocity = (int) (FLING_THRESHOLD_VELOCITY * mDensity);
416265b9a66542148e0ff13971001cb9461065e1e0eAdam Cohen
41731dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    }
41831dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project
41931dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    @Override
420f34bab59fc0260f926aec44d044883dce1b4191fAdam Cohen    protected int getScrollMode() {
421b26f3d6a8c62e7c1a603b6c7979375d8dd4f20d4Winson Chung        return SmoothPagedView.X_LARGE_MODE;
422f34bab59fc0260f926aec44d044883dce1b4191fAdam Cohen    }
423f34bab59fc0260f926aec44d044883dce1b4191fAdam Cohen
42408ee77090f1fef565142e9341914369b1aa342d1Michael Jurka    @Override
42508ee77090f1fef565142e9341914369b1aa342d1Michael Jurka    protected void onViewAdded(View child) {
42608ee77090f1fef565142e9341914369b1aa342d1Michael Jurka        super.onViewAdded(child);
42731dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project        if (!(child instanceof CellLayout)) {
42831dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project            throw new IllegalArgumentException("A Workspace can only have CellLayout children.");
42931dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project        }
4302801cafe62653131fdc9da402e5c44e5ffd0bf47Adam Cohen        CellLayout cl = ((CellLayout) child);
4312801cafe62653131fdc9da402e5c44e5ffd0bf47Adam Cohen        cl.setOnInterceptTouchListener(this);
4322801cafe62653131fdc9da402e5c44e5ffd0bf47Adam Cohen        cl.setClickable(true);
4332801cafe62653131fdc9da402e5c44e5ffd0bf47Adam Cohen        cl.enableHardwareLayers();
434e5fb0f27bca7afb996258a7163c76ca7390d7bffMichael Jurka    }
4352801cafe62653131fdc9da402e5c44e5ffd0bf47Adam Cohen
43631dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    /**
43731dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project     * @return The open folder on the current screen, or null if there is none
43831dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project     */
43931dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    Folder getOpenFolder() {
440716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohen        DragLayer dragLayer = mLauncher.getDragLayer();
4418e776a62c5cc60737f5cdbbeacfec5f958112fa7Adam Cohen        int count = dragLayer.getChildCount();
44231dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project        for (int i = 0; i < count; i++) {
4438e776a62c5cc60737f5cdbbeacfec5f958112fa7Adam Cohen            View child = dragLayer.getChildAt(i);
444aafa03cbb925c74be1c13f8bb99d928be429e62fWinson Chung            if (child instanceof Folder) {
445aafa03cbb925c74be1c13f8bb99d928be429e62fWinson Chung                Folder folder = (Folder) child;
446aafa03cbb925c74be1c13f8bb99d928be429e62fWinson Chung                if (folder.getInfo().opened)
447aafa03cbb925c74be1c13f8bb99d928be429e62fWinson Chung                    return folder;
44831dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project            }
44931dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project        }
45031dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project        return null;
45131dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    }
45231dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project
453a0aa0121b91fde17e427ab2763ce312e64cf5d33Patrick Dubroy    boolean isTouchActive() {
454a0aa0121b91fde17e427ab2763ce312e64cf5d33Patrick Dubroy        return mTouchState != TOUCH_STATE_REST;
45531dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    }
45631dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project
45731dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    /**
45831dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project     * Adds the specified child in the specified screen. The position and dimension of
45931dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project     * the child are defined by x, y, spanX and spanY.
46031dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project     *
46131dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project     * @param child The child to add in one of the workspace's screens.
46231dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project     * @param screen The screen in which to add the child.
46331dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project     * @param x The X position of the child in the screen's grid.
46431dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project     * @param y The Y position of the child in the screen's grid.
46531dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project     * @param spanX The number of cells spanned horizontally by the child.
46631dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project     * @param spanY The number of cells spanned vertically by the child.
46731dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project     */
4683d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung    void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY) {
4693d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung        addInScreen(child, container, screen, x, y, spanX, spanY, false);
470aafa03cbb925c74be1c13f8bb99d928be429e62fWinson Chung    }
471aafa03cbb925c74be1c13f8bb99d928be429e62fWinson Chung
47231dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    /**
47331dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project     * Adds the specified child in the specified screen. The position and dimension of
47431dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project     * the child are defined by x, y, spanX and spanY.
47531dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project     *
47631dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project     * @param child The child to add in one of the workspace's screens.
47731dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project     * @param screen The screen in which to add the child.
47831dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project     * @param x The X position of the child in the screen's grid.
47931dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project     * @param y The Y position of the child in the screen's grid.
48031dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project     * @param spanX The number of cells spanned horizontally by the child.
48131dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project     * @param spanY The number of cells spanned vertically by the child.
48231dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project     * @param insert When true, the child is inserted at the beginning of the children list.
48331dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project     */
4843d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung    void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY,
4853d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung            boolean insert) {
4863d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung        if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) {
4873d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung            if (screen < 0 || screen >= getChildCount()) {
4883d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                Log.e(TAG, "The screen must be >= 0 and < " + getChildCount()
4893d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                    + " (was " + screen + "); skipping child");
4903d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                return;
4913d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung            }
4923d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung        }
4933d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung
4943d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung        final CellLayout layout;
4953d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung        if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) {
4963d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung            layout = mLauncher.getHotseat().getLayout();
4974d279d94ade1c0d455404312b3c9cfde0078c547Winson Chung            child.setOnKeyListener(null);
4983d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung
499099f60d51f6310e1290687e83958e665b3324504Adam Cohen            // Hide folder title in the hotseat
500099f60d51f6310e1290687e83958e665b3324504Adam Cohen            if (child instanceof FolderIcon) {
501099f60d51f6310e1290687e83958e665b3324504Adam Cohen                ((FolderIcon) child).setTextVisible(false);
502099f60d51f6310e1290687e83958e665b3324504Adam Cohen            }
503099f60d51f6310e1290687e83958e665b3324504Adam Cohen
5043d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung            if (screen < 0) {
5053d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                screen = mLauncher.getHotseat().getOrderInHotseat(x, y);
5063d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung            } else {
5073d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                // Note: We do this to ensure that the hotseat is always laid out in the orientation
5083d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                // of the hotseat in order regardless of which orientation they were added
5093d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                x = mLauncher.getHotseat().getCellXFromOrder(screen);
5103d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                y = mLauncher.getHotseat().getCellYFromOrder(screen);
5113d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung            }
5123d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung        } else {
513099f60d51f6310e1290687e83958e665b3324504Adam Cohen            // Show folder title if not in the hotseat
514099f60d51f6310e1290687e83958e665b3324504Adam Cohen            if (child instanceof FolderIcon) {
515099f60d51f6310e1290687e83958e665b3324504Adam Cohen                ((FolderIcon) child).setTextVisible(true);
516099f60d51f6310e1290687e83958e665b3324504Adam Cohen            }
517099f60d51f6310e1290687e83958e665b3324504Adam Cohen
5183d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung            layout = (CellLayout) getChildAt(screen);
519ac56cff1860b71d3f164aedd268703936e08fdc0Adam Cohen            child.setOnKeyListener(new IconKeyEventListener());
52031dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project        }
52131dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project
522ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen        LayoutParams genericLp = child.getLayoutParams();
523ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen        CellLayout.LayoutParams lp;
524ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen        if (genericLp == null || !(genericLp instanceof CellLayout.LayoutParams)) {
52531dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project            lp = new CellLayout.LayoutParams(x, y, spanX, spanY);
52631dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project        } else {
527ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen            lp = (CellLayout.LayoutParams) genericLp;
52831dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project            lp.cellX = x;
52931dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project            lp.cellY = y;
53031dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project            lp.cellHSpan = spanX;
53131dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project            lp.cellVSpan = spanY;
53231dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project        }
533aafa03cbb925c74be1c13f8bb99d928be429e62fWinson Chung
5347f4eabe3709a72b416569136e4a095431c493c8bAdam Cohen        if (spanX < 0 && spanY < 0) {
5357f4eabe3709a72b416569136e4a095431c493c8bAdam Cohen            lp.isLockedToGrid = false;
5367f4eabe3709a72b416569136e4a095431c493c8bAdam Cohen        }
5377f4eabe3709a72b416569136e4a095431c493c8bAdam Cohen
5386569f2c80e179c2f8ed73dae6b01d971ec20f005Patrick Dubroy        // Get the canonical child id to uniquely represent this view in this screen
5393d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung        int childId = LauncherModel.getCellLayoutChildId(container, screen, x, y, spanX, spanY);
540f3ca3ab6958b104cbf2c2fa04add97d372a94d1cMichael Jurka        boolean markCellsAsOccupied = !(child instanceof Folder);
5413d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung        if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) {
542aafa03cbb925c74be1c13f8bb99d928be429e62fWinson Chung            // TODO: This branch occurs when the workspace is adding views
543aafa03cbb925c74be1c13f8bb99d928be429e62fWinson Chung            // outside of the defined grid
5446569f2c80e179c2f8ed73dae6b01d971ec20f005Patrick Dubroy            // maybe we should be deleting these items from the LauncherModel?
545aafa03cbb925c74be1c13f8bb99d928be429e62fWinson Chung            Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout");
546aafa03cbb925c74be1c13f8bb99d928be429e62fWinson Chung        }
547aafa03cbb925c74be1c13f8bb99d928be429e62fWinson Chung
54831dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project        if (!(child instanceof Folder)) {
5490d44e9482b95d8f163b28bf20131c4349185b589Joe Onorato            child.setHapticFeedbackEnabled(false);
55031dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project            child.setOnLongClickListener(mLongClickListener);
55131dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project        }
55200acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato        if (child instanceof DropTarget) {
553aafa03cbb925c74be1c13f8bb99d928be429e62fWinson Chung            mDragController.addDropTarget((DropTarget) child);
55400acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato        }
55531dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    }
55631dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project
557d0ce1ec2e21ce3bb0ba3549a01d1d06b440a8e45Patrick Dubroy    /**
558d0ce1ec2e21ce3bb0ba3549a01d1d06b440a8e45Patrick Dubroy     * Check if the point (x, y) hits a given page.
559d0ce1ec2e21ce3bb0ba3549a01d1d06b440a8e45Patrick Dubroy     */
560d0ce1ec2e21ce3bb0ba3549a01d1d06b440a8e45Patrick Dubroy    private boolean hitsPage(int index, float x, float y) {
561d0ce1ec2e21ce3bb0ba3549a01d1d06b440a8e45Patrick Dubroy        final View page = getChildAt(index);
562d0ce1ec2e21ce3bb0ba3549a01d1d06b440a8e45Patrick Dubroy        if (page != null) {
563d0ce1ec2e21ce3bb0ba3549a01d1d06b440a8e45Patrick Dubroy            float[] localXY = { x, y };
564d0ce1ec2e21ce3bb0ba3549a01d1d06b440a8e45Patrick Dubroy            mapPointFromSelfToChild(page, localXY);
565d0ce1ec2e21ce3bb0ba3549a01d1d06b440a8e45Patrick Dubroy            return (localXY[0] >= 0 && localXY[0] < page.getWidth()
566d0ce1ec2e21ce3bb0ba3549a01d1d06b440a8e45Patrick Dubroy                    && localXY[1] >= 0 && localXY[1] < page.getHeight());
567d0ce1ec2e21ce3bb0ba3549a01d1d06b440a8e45Patrick Dubroy        }
568d0ce1ec2e21ce3bb0ba3549a01d1d06b440a8e45Patrick Dubroy        return false;
569d0ce1ec2e21ce3bb0ba3549a01d1d06b440a8e45Patrick Dubroy    }
570d0ce1ec2e21ce3bb0ba3549a01d1d06b440a8e45Patrick Dubroy
571d0ce1ec2e21ce3bb0ba3549a01d1d06b440a8e45Patrick Dubroy    @Override
572d0ce1ec2e21ce3bb0ba3549a01d1d06b440a8e45Patrick Dubroy    protected boolean hitsPreviousPage(float x, float y) {
573d0ce1ec2e21ce3bb0ba3549a01d1d06b440a8e45Patrick Dubroy        // mNextPage is set to INVALID_PAGE whenever we are stationary.
574d0ce1ec2e21ce3bb0ba3549a01d1d06b440a8e45Patrick Dubroy        // Calculating "next page" this way ensures that you scroll to whatever page you tap on
575d0ce1ec2e21ce3bb0ba3549a01d1d06b440a8e45Patrick Dubroy        final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage;
576b72094fe1da249cc16af517d5ef598b3cbcbdf11Michael Jurka
577b72094fe1da249cc16af517d5ef598b3cbcbdf11Michael Jurka        // Only allow tap to next page on large devices, where there's significant margin outside
578b72094fe1da249cc16af517d5ef598b3cbcbdf11Michael Jurka        // the active workspace
579b72094fe1da249cc16af517d5ef598b3cbcbdf11Michael Jurka        return LauncherApplication.isScreenLarge() && hitsPage(current - 1, x, y);
580d0ce1ec2e21ce3bb0ba3549a01d1d06b440a8e45Patrick Dubroy    }
581d0ce1ec2e21ce3bb0ba3549a01d1d06b440a8e45Patrick Dubroy
582d0ce1ec2e21ce3bb0ba3549a01d1d06b440a8e45Patrick Dubroy    @Override
583d0ce1ec2e21ce3bb0ba3549a01d1d06b440a8e45Patrick Dubroy    protected boolean hitsNextPage(float x, float y) {
584d0ce1ec2e21ce3bb0ba3549a01d1d06b440a8e45Patrick Dubroy        // mNextPage is set to INVALID_PAGE whenever we are stationary.
585d0ce1ec2e21ce3bb0ba3549a01d1d06b440a8e45Patrick Dubroy        // Calculating "next page" this way ensures that you scroll to whatever page you tap on
586d0ce1ec2e21ce3bb0ba3549a01d1d06b440a8e45Patrick Dubroy        final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage;
587b72094fe1da249cc16af517d5ef598b3cbcbdf11Michael Jurka
588b72094fe1da249cc16af517d5ef598b3cbcbdf11Michael Jurka        // Only allow tap to next page on large devices, where there's significant margin outside
589b72094fe1da249cc16af517d5ef598b3cbcbdf11Michael Jurka        // the active workspace
590b72094fe1da249cc16af517d5ef598b3cbcbdf11Michael Jurka        return LauncherApplication.isScreenLarge() && hitsPage(current + 1, x, y);
591d0ce1ec2e21ce3bb0ba3549a01d1d06b440a8e45Patrick Dubroy    }
592d0ce1ec2e21ce3bb0ba3549a01d1d06b440a8e45Patrick Dubroy
593e708c5249b26978057acb9370cbfb8f6f747f5b8Patrick Dubroy    /**
594e708c5249b26978057acb9370cbfb8f6f747f5b8Patrick Dubroy     * Called directly from a CellLayout (not by the framework), after we've been added as a
595e708c5249b26978057acb9370cbfb8f6f747f5b8Patrick Dubroy     * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout
596e708c5249b26978057acb9370cbfb8f6f747f5b8Patrick Dubroy     * that it should intercept touch events, which is not something that is normally supported.
597e708c5249b26978057acb9370cbfb8f6f747f5b8Patrick Dubroy     */
598e708c5249b26978057acb9370cbfb8f6f747f5b8Patrick Dubroy    @Override
599dee0589388ba0f6373912e18bf86243282fb3b9bMichael Jurka    public boolean onTouch(View v, MotionEvent event) {
6007044272f180d34ab29866f6c59ee75376e8a1df5Winson Chung        return (isSmall() || !isFinishedSwitchingState());
601e708c5249b26978057acb9370cbfb8f6f747f5b8Patrick Dubroy    }
602e708c5249b26978057acb9370cbfb8f6f747f5b8Patrick Dubroy
603fc53cd22c9a78708c78c85946443f23ec8c59502Adam Cohen    public boolean isSwitchingState() {
604fc53cd22c9a78708c78c85946443f23ec8c59502Adam Cohen        return mIsSwitchingState;
605fc53cd22c9a78708c78c85946443f23ec8c59502Adam Cohen    }
606fc53cd22c9a78708c78c85946443f23ec8c59502Adam Cohen
6077044272f180d34ab29866f6c59ee75376e8a1df5Winson Chung    /** This differs from isSwitchingState in that we take into account how far the transition
6087044272f180d34ab29866f6c59ee75376e8a1df5Winson Chung     *  has completed. */
6099b0b2fefb2de9aca457ab1c38ffd08d7667f4065Winson Chung    public boolean isFinishedSwitchingState() {
6107044272f180d34ab29866f6c59ee75376e8a1df5Winson Chung        return !mIsSwitchingState || (mTransitionProgress > 0.5f);
6117044272f180d34ab29866f6c59ee75376e8a1df5Winson Chung    }
6127044272f180d34ab29866f6c59ee75376e8a1df5Winson Chung
613ded9f8d8658d0b6601006c0a954cd3bf530e55c1Adam Cohen    protected void onWindowVisibilityChanged (int visibility) {
614ded9f8d8658d0b6601006c0a954cd3bf530e55c1Adam Cohen        mLauncher.onWindowVisibilityChanged(visibility);
615ded9f8d8658d0b6601006c0a954cd3bf530e55c1Adam Cohen    }
616ded9f8d8658d0b6601006c0a954cd3bf530e55c1Adam Cohen
6175f1c509d5ad1954a7e38e77db4d5f27c7345fd39Michael Jurka    @Override
6185f1c509d5ad1954a7e38e77db4d5f27c7345fd39Michael Jurka    public boolean dispatchUnhandledMove(View focused, int direction) {
6197044272f180d34ab29866f6c59ee75376e8a1df5Winson Chung        if (isSmall() || !isFinishedSwitchingState()) {
6205f1c509d5ad1954a7e38e77db4d5f27c7345fd39Michael Jurka            // when the home screens are shrunken, shouldn't allow side-scrolling
6215f1c509d5ad1954a7e38e77db4d5f27c7345fd39Michael Jurka            return false;
6225f1c509d5ad1954a7e38e77db4d5f27c7345fd39Michael Jurka        }
6235f1c509d5ad1954a7e38e77db4d5f27c7345fd39Michael Jurka        return super.dispatchUnhandledMove(focused, direction);
6245f1c509d5ad1954a7e38e77db4d5f27c7345fd39Michael Jurka    }
6255f1c509d5ad1954a7e38e77db4d5f27c7345fd39Michael Jurka
6265f1c509d5ad1954a7e38e77db4d5f27c7345fd39Michael Jurka    @Override
6275f1c509d5ad1954a7e38e77db4d5f27c7345fd39Michael Jurka    public boolean onInterceptTouchEvent(MotionEvent ev) {
628d771c96e5d156ffde5d35ee13ce053de60dc3163Michael Jurka        switch (ev.getAction() & MotionEvent.ACTION_MASK) {
629d771c96e5d156ffde5d35ee13ce053de60dc3163Michael Jurka        case MotionEvent.ACTION_DOWN:
630f8d2823d885ba682140aee1ae0504c1c5e67a24bAdam Cohen            mXDown = ev.getX();
631f8d2823d885ba682140aee1ae0504c1c5e67a24bAdam Cohen            mYDown = ev.getY();
632d771c96e5d156ffde5d35ee13ce053de60dc3163Michael Jurka            break;
633d771c96e5d156ffde5d35ee13ce053de60dc3163Michael Jurka        case MotionEvent.ACTION_POINTER_UP:
634d771c96e5d156ffde5d35ee13ce053de60dc3163Michael Jurka        case MotionEvent.ACTION_UP:
635d771c96e5d156ffde5d35ee13ce053de60dc3163Michael Jurka            if (mTouchState == TOUCH_STATE_REST) {
636d771c96e5d156ffde5d35ee13ce053de60dc3163Michael Jurka                final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage);
637d771c96e5d156ffde5d35ee13ce053de60dc3163Michael Jurka                if (!currentPage.lastDownOnOccupiedCell()) {
638d771c96e5d156ffde5d35ee13ce053de60dc3163Michael Jurka                    onWallpaperTap(ev);
639d771c96e5d156ffde5d35ee13ce053de60dc3163Michael Jurka                }
640d771c96e5d156ffde5d35ee13ce053de60dc3163Michael Jurka            }
641f8d2823d885ba682140aee1ae0504c1c5e67a24bAdam Cohen        }
6425f1c509d5ad1954a7e38e77db4d5f27c7345fd39Michael Jurka        return super.onInterceptTouchEvent(ev);
6435f1c509d5ad1954a7e38e77db4d5f27c7345fd39Michael Jurka    }
6445f1c509d5ad1954a7e38e77db4d5f27c7345fd39Michael Jurka
6451adf5391a3a3d215b226adf3702019c22a99e3b1Michael Jurka    @Override
6461adf5391a3a3d215b226adf3702019c22a99e3b1Michael Jurka    protected void determineScrollingStart(MotionEvent ev) {
6477044272f180d34ab29866f6c59ee75376e8a1df5Winson Chung        if (isSmall()) return;
6487044272f180d34ab29866f6c59ee75376e8a1df5Winson Chung        if (!isFinishedSwitchingState()) return;
649f8d2823d885ba682140aee1ae0504c1c5e67a24bAdam Cohen
6507044272f180d34ab29866f6c59ee75376e8a1df5Winson Chung        float deltaX = Math.abs(ev.getX() - mXDown);
6517044272f180d34ab29866f6c59ee75376e8a1df5Winson Chung        float deltaY = Math.abs(ev.getY() - mYDown);
652f8d2823d885ba682140aee1ae0504c1c5e67a24bAdam Cohen
6537044272f180d34ab29866f6c59ee75376e8a1df5Winson Chung        if (Float.compare(deltaX, 0f) == 0) return;
654f8d2823d885ba682140aee1ae0504c1c5e67a24bAdam Cohen
6557044272f180d34ab29866f6c59ee75376e8a1df5Winson Chung        float slope = deltaY / deltaX;
6567044272f180d34ab29866f6c59ee75376e8a1df5Winson Chung        float theta = (float) Math.atan(slope);
657f8d2823d885ba682140aee1ae0504c1c5e67a24bAdam Cohen
6587044272f180d34ab29866f6c59ee75376e8a1df5Winson Chung        if (deltaX > mTouchSlop || deltaY > mTouchSlop) {
6597044272f180d34ab29866f6c59ee75376e8a1df5Winson Chung            cancelCurrentPageLongPress();
6607044272f180d34ab29866f6c59ee75376e8a1df5Winson Chung        }
6617044272f180d34ab29866f6c59ee75376e8a1df5Winson Chung
6627044272f180d34ab29866f6c59ee75376e8a1df5Winson Chung        if (theta > MAX_SWIPE_ANGLE) {
6637044272f180d34ab29866f6c59ee75376e8a1df5Winson Chung            // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace
6647044272f180d34ab29866f6c59ee75376e8a1df5Winson Chung            return;
6657044272f180d34ab29866f6c59ee75376e8a1df5Winson Chung        } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) {
6667044272f180d34ab29866f6c59ee75376e8a1df5Winson Chung            // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to
6677044272f180d34ab29866f6c59ee75376e8a1df5Winson Chung            // increase the touch slop to make it harder to begin scrolling the workspace. This
6687044272f180d34ab29866f6c59ee75376e8a1df5Winson Chung            // results in vertically scrolling widgets to more easily. The higher the angle, the
6697044272f180d34ab29866f6c59ee75376e8a1df5Winson Chung            // more we increase touch slop.
6707044272f180d34ab29866f6c59ee75376e8a1df5Winson Chung            theta -= START_DAMPING_TOUCH_SLOP_ANGLE;
6717044272f180d34ab29866f6c59ee75376e8a1df5Winson Chung            float extraRatio = (float)
6727044272f180d34ab29866f6c59ee75376e8a1df5Winson Chung                    Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE)));
6737044272f180d34ab29866f6c59ee75376e8a1df5Winson Chung            super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio);
6747044272f180d34ab29866f6c59ee75376e8a1df5Winson Chung        } else {
6757044272f180d34ab29866f6c59ee75376e8a1df5Winson Chung            // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special
6767044272f180d34ab29866f6c59ee75376e8a1df5Winson Chung            super.determineScrollingStart(ev);
677f8d2823d885ba682140aee1ae0504c1c5e67a24bAdam Cohen        }
6781adf5391a3a3d215b226adf3702019c22a99e3b1Michael Jurka    }
6791adf5391a3a3d215b226adf3702019c22a99e3b1Michael Jurka
680007c69867d821ea2b271398577a8b3440b3a7046Winson Chung    @Override
681007c69867d821ea2b271398577a8b3440b3a7046Winson Chung    protected boolean isScrollingIndicatorEnabled() {
682d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka        return mState != State.SPRING_LOADED;
683007c69867d821ea2b271398577a8b3440b3a7046Winson Chung    }
684007c69867d821ea2b271398577a8b3440b3a7046Winson Chung
6851262e369484ce7f2565655ed80e6299232c70bd7Patrick Dubroy    protected void onPageBeginMoving() {
686007c69867d821ea2b271398577a8b3440b3a7046Winson Chung        super.onPageBeginMoving();
687007c69867d821ea2b271398577a8b3440b3a7046Winson Chung
688d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka        if (isHardwareAccelerated()) {
689d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka            updateChildrenLayersEnabled();
6900142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka        } else {
691d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka            if (mNextPage != INVALID_PAGE) {
692d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka                // we're snapping to a particular screen
693d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka                enableChildrenCache(mCurrentPage, mNextPage);
694d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka            } else {
695d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka                // this is when user is actively dragging a particular screen, they might
696d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka                // swipe it either left or right (but we won't advance by more than one screen)
697d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka                enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1);
698d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka            }
69931dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project        }
700007c69867d821ea2b271398577a8b3440b3a7046Winson Chung
701007c69867d821ea2b271398577a8b3440b3a7046Winson Chung        // Only show page outlines as we pan if we are on large screen
702007c69867d821ea2b271398577a8b3440b3a7046Winson Chung        if (LauncherApplication.isScreenLarge()) {
703007c69867d821ea2b271398577a8b3440b3a7046Winson Chung            showOutlines();
7049551537718c191a829fd285890833225c023203dMichael Jurka            mIsStaticWallpaper = mWallpaperManager.getWallpaperInfo() == null;
705007c69867d821ea2b271398577a8b3440b3a7046Winson Chung        }
7061afedc379f8271b9bf86a8d887c3c020d5e59214Winson Chung
7077044272f180d34ab29866f6c59ee75376e8a1df5Winson Chung        // If we are not fading in adjacent screens, we still need to restore the alpha in case the
7087044272f180d34ab29866f6c59ee75376e8a1df5Winson Chung        // user scrolls while we are transitioning (should not affect dispatchDraw optimizations)
7097044272f180d34ab29866f6c59ee75376e8a1df5Winson Chung        if (!mFadeInAdjacentScreens) {
7107044272f180d34ab29866f6c59ee75376e8a1df5Winson Chung            for (int i = 0; i < getChildCount(); ++i) {
7117044272f180d34ab29866f6c59ee75376e8a1df5Winson Chung                getPageAt(i).setAlpha(1f);
7127044272f180d34ab29866f6c59ee75376e8a1df5Winson Chung            }
7137044272f180d34ab29866f6c59ee75376e8a1df5Winson Chung        }
7147044272f180d34ab29866f6c59ee75376e8a1df5Winson Chung
7151afedc379f8271b9bf86a8d887c3c020d5e59214Winson Chung        // Show the scroll indicator as you pan the page
7161afedc379f8271b9bf86a8d887c3c020d5e59214Winson Chung        showScrollingIndicator(false);
71731dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    }
71831dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project
7191262e369484ce7f2565655ed80e6299232c70bd7Patrick Dubroy    protected void onPageEndMoving() {
720007c69867d821ea2b271398577a8b3440b3a7046Winson Chung        super.onPageEndMoving();
721007c69867d821ea2b271398577a8b3440b3a7046Winson Chung
722d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka        if (isHardwareAccelerated()) {
723d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka            updateChildrenLayersEnabled();
724d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka        } else {
725d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka            clearChildrenCache();
726d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka        }
727d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka
7283bc21c35fa167ac233e19df0c9a01b0a07173ed8Winson Chung
7293bc21c35fa167ac233e19df0c9a01b0a07173ed8Winson Chung        if (mDragController.isDragging()) {
7303bc21c35fa167ac233e19df0c9a01b0a07173ed8Winson Chung            if (isSmall()) {
7313bc21c35fa167ac233e19df0c9a01b0a07173ed8Winson Chung                // If we are in springloaded mode, then force an event to check if the current touch
7323bc21c35fa167ac233e19df0c9a01b0a07173ed8Winson Chung                // is under a new page (to scroll to)
7333bc21c35fa167ac233e19df0c9a01b0a07173ed8Winson Chung                mDragController.forceMoveEvent();
7343bc21c35fa167ac233e19df0c9a01b0a07173ed8Winson Chung            }
7353bc21c35fa167ac233e19df0c9a01b0a07173ed8Winson Chung        } else {
7363bc21c35fa167ac233e19df0c9a01b0a07173ed8Winson Chung            // If we are not mid-dragging, hide the page outlines if we are on a large screen
737007c69867d821ea2b271398577a8b3440b3a7046Winson Chung            if (LauncherApplication.isScreenLarge()) {
738007c69867d821ea2b271398577a8b3440b3a7046Winson Chung                hideOutlines();
739007c69867d821ea2b271398577a8b3440b3a7046Winson Chung            }
7401afedc379f8271b9bf86a8d887c3c020d5e59214Winson Chung
7411afedc379f8271b9bf86a8d887c3c020d5e59214Winson Chung            // Hide the scroll indicator as you pan the page
7421afedc379f8271b9bf86a8d887c3c020d5e59214Winson Chung            if (!mDragController.isDragging()) {
7431afedc379f8271b9bf86a8d887c3c020d5e59214Winson Chung                hideScrollingIndicator(false);
7441afedc379f8271b9bf86a8d887c3c020d5e59214Winson Chung            }
7451262e369484ce7f2565655ed80e6299232c70bd7Patrick Dubroy        }
74668d739365bf650fe7fecf99cd3bfe63a0d41bd12Adam Cohen        mOverScrollMaxBackgroundAlpha = 0.0f;
747e0f66b546994a9bdee452851c17a148db02ec300Adam Cohen        mOverScrollPageIndex = -1;
74826976d9b53161f80faf822d482ac771b8621cf31Adam Cohen
74926976d9b53161f80faf822d482ac771b8621cf31Adam Cohen        if (mDelayedResizeRunnable != null) {
75026976d9b53161f80faf822d482ac771b8621cf31Adam Cohen            mDelayedResizeRunnable.run();
75126976d9b53161f80faf822d482ac771b8621cf31Adam Cohen            mDelayedResizeRunnable = null;
75226976d9b53161f80faf822d482ac771b8621cf31Adam Cohen        }
7530142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka    }
7540142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka
7550142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka    @Override
7560142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka    protected void notifyPageSwitchListener() {
7570142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka        super.notifyPageSwitchListener();
7580142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka        Launcher.setScreen(mCurrentPage);
7590142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka    };
7600142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka
761c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka    // As a ratio of screen height, the total distance we want the parallax effect to span
762c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka    // horizontally
763c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka    private float wallpaperTravelToScreenWidthRatio(int width, int height) {
764c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka        float aspectRatio = width / (float) height;
765c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka
766c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka        // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width
767c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka        // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width
768c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka        // We will use these two data points to extrapolate how much the wallpaper parallax effect
769c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka        // to span (ie travel) at any aspect ratio:
770c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka
771c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka        final float ASPECT_RATIO_LANDSCAPE = 16/10f;
772c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka        final float ASPECT_RATIO_PORTRAIT = 10/16f;
773c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka        final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f;
774c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka        final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f;
775c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka
776c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka        // To find out the desired width at different aspect ratios, we use the following two
777c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka        // formulas, where the coefficient on x is the aspect ratio (width/height):
778c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka        //   (16/10)x + y = 1.5
779c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka        //   (10/16)x + y = 1.2
780c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka        // We solve for x and y and end up with a final formula:
781c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka        final float x =
782c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka            (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) /
783c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka            (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT);
784c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka        final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT;
785c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka        return x * aspectRatio + y;
786c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka    }
787c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka
788c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka    // The range of scroll values for Workspace
789c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka    private int getScrollRange() {
790c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka        return getChildOffset(getChildCount() - 1) - getChildOffset(0);
791c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka    }
792c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka
793c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka    protected void setWallpaperDimension() {
794201bc828d5a0078f505e8e37152156a0cb43c10aWinson Chung        DisplayMetrics displayMetrics = new DisplayMetrics();
795cff6af81d721415785bddc2efd74e179d2def9daAdam Cohen        mLauncher.getWindowManager().getDefaultDisplay().getRealMetrics(displayMetrics);
796201bc828d5a0078f505e8e37152156a0cb43c10aWinson Chung        final int maxDim = Math.max(displayMetrics.widthPixels, displayMetrics.heightPixels);
797201bc828d5a0078f505e8e37152156a0cb43c10aWinson Chung        final int minDim = Math.min(displayMetrics.widthPixels, displayMetrics.heightPixels);
798c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka
799c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka        // We need to ensure that there is enough extra space in the wallpaper for the intended
800c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka        // parallax effects
801a64718061a46e3982e35547e675244642bb82860Michael Jurka        if (LauncherApplication.isScreenLarge()) {
802a64718061a46e3982e35547e675244642bb82860Michael Jurka            mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim));
803193080b4c6bfde502aa122b15315745650661af7Michael Jurka            mWallpaperHeight = maxDim;
804a64718061a46e3982e35547e675244642bb82860Michael Jurka        } else {
8051670698ff3502548aa066e32c28ecf62c5592a34Michael Jurka            mWallpaperWidth = Math.max((int) (minDim * WALLPAPER_SCREENS_SPAN), maxDim);
806a64718061a46e3982e35547e675244642bb82860Michael Jurka            mWallpaperHeight = maxDim;
807a64718061a46e3982e35547e675244642bb82860Michael Jurka        }
808f7640c8bba304ba99c99afcd7393893eccc9a0d9Winson Chung        new Thread("setWallpaperDimension") {
809f7640c8bba304ba99c99afcd7393893eccc9a0d9Winson Chung            public void run() {
810f7640c8bba304ba99c99afcd7393893eccc9a0d9Winson Chung                mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight);
811f7640c8bba304ba99c99afcd7393893eccc9a0d9Winson Chung            }
812f7640c8bba304ba99c99afcd7393893eccc9a0d9Winson Chung        }.start();
813c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka    }
814c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka
815ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka    private float wallpaperOffsetForCurrentScroll() {
816ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka        // Set wallpaper offset steps (1 / (number of screens - 1))
817193080b4c6bfde502aa122b15315745650661af7Michael Jurka        mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f);
818ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka
819193080b4c6bfde502aa122b15315745650661af7Michael Jurka        // For the purposes of computing the scrollRange and overScrollOffset, we assume
820193080b4c6bfde502aa122b15315745650661af7Michael Jurka        // that mLayoutScale is 1. This means that when we're in spring-loaded mode,
821beff8c6a13d5b5ad69f5a85ee0150cecd28e6341Adam Cohen        // there's no discrepancy between the wallpaper offset for a given page.
822beff8c6a13d5b5ad69f5a85ee0150cecd28e6341Adam Cohen        float layoutScale = mLayoutScale;
823beff8c6a13d5b5ad69f5a85ee0150cecd28e6341Adam Cohen        mLayoutScale = 1f;
82409d6eb0f3fb1d81ea59881e6c65512d09d573cc1Michael Jurka        int scrollRange = getScrollRange();
82509d6eb0f3fb1d81ea59881e6c65512d09d573cc1Michael Jurka
826beff8c6a13d5b5ad69f5a85ee0150cecd28e6341Adam Cohen        // Again, we adjust the wallpaper offset to be consistent between values of mLayoutScale
827193080b4c6bfde502aa122b15315745650661af7Michael Jurka        float adjustedScrollX = Math.max(0, Math.min(mScrollX, mMaxScrollX));
828b5ba097015c4794fa822f30b38a60a7070a00097Adam Cohen        adjustedScrollX *= mWallpaperScrollRatio;
829beff8c6a13d5b5ad69f5a85ee0150cecd28e6341Adam Cohen        mLayoutScale = layoutScale;
830beff8c6a13d5b5ad69f5a85ee0150cecd28e6341Adam Cohen
831ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka        float scrollProgress =
832193080b4c6bfde502aa122b15315745650661af7Michael Jurka            adjustedScrollX / (float) scrollRange;
8339551537718c191a829fd285890833225c023203dMichael Jurka
8349551537718c191a829fd285890833225c023203dMichael Jurka        if (LauncherApplication.isScreenLarge() && mIsStaticWallpaper) {
8359551537718c191a829fd285890833225c023203dMichael Jurka            // The wallpaper travel width is how far, from left to right, the wallpaper will move
8369551537718c191a829fd285890833225c023203dMichael Jurka            // at this orientation. On tablets in portrait mode we don't move all the way to the
8379551537718c191a829fd285890833225c023203dMichael Jurka            // edges of the wallpaper, or otherwise the parallax effect would be too strong.
8389551537718c191a829fd285890833225c023203dMichael Jurka            int wallpaperTravelWidth = Math.min(mWallpaperTravelWidth, mWallpaperWidth);
8399551537718c191a829fd285890833225c023203dMichael Jurka
8409551537718c191a829fd285890833225c023203dMichael Jurka            float offsetInDips = wallpaperTravelWidth * scrollProgress +
8419551537718c191a829fd285890833225c023203dMichael Jurka                (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it
8429551537718c191a829fd285890833225c023203dMichael Jurka            float offset = offsetInDips / (float) mWallpaperWidth;
8439551537718c191a829fd285890833225c023203dMichael Jurka            return offset;
8449551537718c191a829fd285890833225c023203dMichael Jurka        } else {
8459551537718c191a829fd285890833225c023203dMichael Jurka            return scrollProgress;
8469551537718c191a829fd285890833225c023203dMichael Jurka        }
847ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka    }
8489551537718c191a829fd285890833225c023203dMichael Jurka
849ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka    private void syncWallpaperOffsetWithScroll() {
850b46a2d130b3d04df830402d579060b63db559ae3Winson Chung        final boolean enableWallpaperEffects = isHardwareAccelerated();
851b46a2d130b3d04df830402d579060b63db559ae3Winson Chung        if (enableWallpaperEffects) {
852ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka            mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll());
853c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka        }
854c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka    }
855c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka
856c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka    public void updateWallpaperOffsetImmediately() {
857c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka        mUpdateWallpaperOffsetImmediately = true;
858c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka    }
859c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka
860ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka    private void updateWallpaperOffsets() {
861ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka        boolean updateNow = false;
862ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka        boolean keepUpdating = true;
863ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka        if (mUpdateWallpaperOffsetImmediately) {
864ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka            updateNow = true;
865ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka            keepUpdating = false;
866ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka            mWallpaperOffset.jumpToFinal();
867ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka            mUpdateWallpaperOffsetImmediately = false;
868c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka        } else {
869ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka            updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset();
870ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka        }
871ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka        if (updateNow) {
8729c6fbed48783dacd9bc6b4ec5f2cc8e59ec7ee37Michael Jurka            if (mWindowToken != null) {
8739c6fbed48783dacd9bc6b4ec5f2cc8e59ec7ee37Michael Jurka                mWallpaperManager.setWallpaperOffsets(mWindowToken,
874ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka                        mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY());
875ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka            }
876ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka        }
877ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka        if (keepUpdating) {
8787372c59277a23a31eeb1513a554b29d7bf05aedbMichael Jurka            invalidate();
879956091ba7863bd72086275e61084864994dd6fa7Joe Onorato        }
880ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka    }
881ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka
882beff8c6a13d5b5ad69f5a85ee0150cecd28e6341Adam Cohen    @Override
883beff8c6a13d5b5ad69f5a85ee0150cecd28e6341Adam Cohen    protected void updateCurrentPageScroll() {
884beff8c6a13d5b5ad69f5a85ee0150cecd28e6341Adam Cohen        super.updateCurrentPageScroll();
8855037a0b02a720ae14cbf673d7d5bb148f5a524c8Adam Cohen        computeWallpaperScrollRatio(mCurrentPage);
886beff8c6a13d5b5ad69f5a85ee0150cecd28e6341Adam Cohen    }
887beff8c6a13d5b5ad69f5a85ee0150cecd28e6341Adam Cohen
888beff8c6a13d5b5ad69f5a85ee0150cecd28e6341Adam Cohen    @Override
889beff8c6a13d5b5ad69f5a85ee0150cecd28e6341Adam Cohen    protected void snapToPage(int whichPage) {
890beff8c6a13d5b5ad69f5a85ee0150cecd28e6341Adam Cohen        super.snapToPage(whichPage);
8915037a0b02a720ae14cbf673d7d5bb148f5a524c8Adam Cohen        computeWallpaperScrollRatio(whichPage);
892beff8c6a13d5b5ad69f5a85ee0150cecd28e6341Adam Cohen    }
893beff8c6a13d5b5ad69f5a85ee0150cecd28e6341Adam Cohen
8945037a0b02a720ae14cbf673d7d5bb148f5a524c8Adam Cohen    private void computeWallpaperScrollRatio(int page) {
895beff8c6a13d5b5ad69f5a85ee0150cecd28e6341Adam Cohen        // Here, we determine what the desired scroll would be with and without a layout scale,
896beff8c6a13d5b5ad69f5a85ee0150cecd28e6341Adam Cohen        // and compute a ratio between the two. This allows us to adjust the wallpaper offset
897beff8c6a13d5b5ad69f5a85ee0150cecd28e6341Adam Cohen        // as though there is no layout scale.
898beff8c6a13d5b5ad69f5a85ee0150cecd28e6341Adam Cohen        float layoutScale = mLayoutScale;
8995037a0b02a720ae14cbf673d7d5bb148f5a524c8Adam Cohen        int scaled = getChildOffset(page) - getRelativeChildOffset(page);
900beff8c6a13d5b5ad69f5a85ee0150cecd28e6341Adam Cohen        mLayoutScale = 1.0f;
9015037a0b02a720ae14cbf673d7d5bb148f5a524c8Adam Cohen        float unscaled = getChildOffset(page) - getRelativeChildOffset(page);
902beff8c6a13d5b5ad69f5a85ee0150cecd28e6341Adam Cohen        mLayoutScale = layoutScale;
903beff8c6a13d5b5ad69f5a85ee0150cecd28e6341Adam Cohen        if (scaled > 0) {
904beff8c6a13d5b5ad69f5a85ee0150cecd28e6341Adam Cohen            mWallpaperScrollRatio = (1.0f * unscaled) / scaled;
905beff8c6a13d5b5ad69f5a85ee0150cecd28e6341Adam Cohen        } else {
906beff8c6a13d5b5ad69f5a85ee0150cecd28e6341Adam Cohen            mWallpaperScrollRatio = 1f;
907beff8c6a13d5b5ad69f5a85ee0150cecd28e6341Adam Cohen        }
908beff8c6a13d5b5ad69f5a85ee0150cecd28e6341Adam Cohen    }
909beff8c6a13d5b5ad69f5a85ee0150cecd28e6341Adam Cohen
910ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka    class WallpaperOffsetInterpolator {
911ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka        float mFinalHorizontalWallpaperOffset = 0.0f;
912ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka        float mFinalVerticalWallpaperOffset = 0.5f;
913ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka        float mHorizontalWallpaperOffset = 0.0f;
914ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka        float mVerticalWallpaperOffset = 0.5f;
915ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka        long mLastWallpaperOffsetUpdateTime;
916ca5b836e16d320f17057cd1a40a93c382e72501aMichael Jurka        boolean mIsMovingFast;
917ca5b836e16d320f17057cd1a40a93c382e72501aMichael Jurka        boolean mOverrideHorizontalCatchupConstant;
918ca5b836e16d320f17057cd1a40a93c382e72501aMichael Jurka        float mHorizontalCatchupConstant = 0.35f;
919ca5b836e16d320f17057cd1a40a93c382e72501aMichael Jurka        float mVerticalCatchupConstant = 0.35f;
920ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka
921ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka        public WallpaperOffsetInterpolator() {
922ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka        }
923ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka
924ca5b836e16d320f17057cd1a40a93c382e72501aMichael Jurka        public void setOverrideHorizontalCatchupConstant(boolean override) {
925ca5b836e16d320f17057cd1a40a93c382e72501aMichael Jurka            mOverrideHorizontalCatchupConstant = override;
926ca5b836e16d320f17057cd1a40a93c382e72501aMichael Jurka        }
927ca5b836e16d320f17057cd1a40a93c382e72501aMichael Jurka
928ca5b836e16d320f17057cd1a40a93c382e72501aMichael Jurka        public void setHorizontalCatchupConstant(float f) {
929ca5b836e16d320f17057cd1a40a93c382e72501aMichael Jurka            mHorizontalCatchupConstant = f;
930ca5b836e16d320f17057cd1a40a93c382e72501aMichael Jurka        }
931ca5b836e16d320f17057cd1a40a93c382e72501aMichael Jurka
932ca5b836e16d320f17057cd1a40a93c382e72501aMichael Jurka        public void setVerticalCatchupConstant(float f) {
933ca5b836e16d320f17057cd1a40a93c382e72501aMichael Jurka            mVerticalCatchupConstant = f;
934ca5b836e16d320f17057cd1a40a93c382e72501aMichael Jurka        }
935ca5b836e16d320f17057cd1a40a93c382e72501aMichael Jurka
936ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka        public boolean computeScrollOffset() {
937ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka            if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 &&
938ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka                    Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) {
939ca5b836e16d320f17057cd1a40a93c382e72501aMichael Jurka                mIsMovingFast = false;
940ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka                return false;
941ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka            }
942cff6af81d721415785bddc2efd74e179d2def9daAdam Cohen            boolean isLandscape = mDisplayWidth > mDisplayHeight;
943ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka
944ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka            long currentTime = System.currentTimeMillis();
945ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka            long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime;
946ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka            timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate);
947ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka            timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate);
948ca5b836e16d320f17057cd1a40a93c382e72501aMichael Jurka
949ca5b836e16d320f17057cd1a40a93c382e72501aMichael Jurka            float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset);
950ca5b836e16d320f17057cd1a40a93c382e72501aMichael Jurka            if (!mIsMovingFast && xdiff > 0.07) {
951ca5b836e16d320f17057cd1a40a93c382e72501aMichael Jurka                mIsMovingFast = true;
952ca5b836e16d320f17057cd1a40a93c382e72501aMichael Jurka            }
953ca5b836e16d320f17057cd1a40a93c382e72501aMichael Jurka
954ca5b836e16d320f17057cd1a40a93c382e72501aMichael Jurka            float fractionToCatchUpIn1MsHorizontal;
955ca5b836e16d320f17057cd1a40a93c382e72501aMichael Jurka            if (mOverrideHorizontalCatchupConstant) {
956ca5b836e16d320f17057cd1a40a93c382e72501aMichael Jurka                fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant;
957ca5b836e16d320f17057cd1a40a93c382e72501aMichael Jurka            } else if (mIsMovingFast) {
958ca5b836e16d320f17057cd1a40a93c382e72501aMichael Jurka                fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f;
959ca5b836e16d320f17057cd1a40a93c382e72501aMichael Jurka            } else {
960ca5b836e16d320f17057cd1a40a93c382e72501aMichael Jurka                // slow
961ca5b836e16d320f17057cd1a40a93c382e72501aMichael Jurka                fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f;
962ca5b836e16d320f17057cd1a40a93c382e72501aMichael Jurka            }
963ca5b836e16d320f17057cd1a40a93c382e72501aMichael Jurka            float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant;
964ca5b836e16d320f17057cd1a40a93c382e72501aMichael Jurka
965ca5b836e16d320f17057cd1a40a93c382e72501aMichael Jurka            fractionToCatchUpIn1MsHorizontal /= 33f;
966ca5b836e16d320f17057cd1a40a93c382e72501aMichael Jurka            fractionToCatchUpIn1MsVertical /= 33f;
967ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka
968ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka            final float UPDATE_THRESHOLD = 0.00001f;
969ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka            float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset;
970ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka            float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset;
971ca5b836e16d320f17057cd1a40a93c382e72501aMichael Jurka            boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD &&
972ca5b836e16d320f17057cd1a40a93c382e72501aMichael Jurka                Math.abs(vOffsetDelta) < UPDATE_THRESHOLD;
973a64718061a46e3982e35547e675244642bb82860Michael Jurka
974a64718061a46e3982e35547e675244642bb82860Michael Jurka            // Don't have any lag between workspace and wallpaper on non-large devices
975a64718061a46e3982e35547e675244642bb82860Michael Jurka            if (!LauncherApplication.isScreenLarge() || jumpToFinalValue) {
976ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka                mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset;
977ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka                mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset;
978ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka            } else {
979ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka                float percentToCatchUpVertical =
980ca5b836e16d320f17057cd1a40a93c382e72501aMichael Jurka                    Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical);
981ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka                float percentToCatchUpHorizontal =
982ca5b836e16d320f17057cd1a40a93c382e72501aMichael Jurka                    Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal);
983ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka                mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta;
984ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka                mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta;
985ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka            }
986ca5b836e16d320f17057cd1a40a93c382e72501aMichael Jurka
987ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka            mLastWallpaperOffsetUpdateTime = System.currentTimeMillis();
988ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka            return true;
989ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka        }
990ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka
991ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka        public float getCurrX() {
992ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka            return mHorizontalWallpaperOffset;
993ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka        }
994ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka
995ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka        public float getFinalX() {
996ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka            return mFinalHorizontalWallpaperOffset;
997ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka        }
998ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka
999ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka        public float getCurrY() {
1000ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka            return mVerticalWallpaperOffset;
1001ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka        }
1002ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka
1003ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka        public float getFinalY() {
1004ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka            return mFinalVerticalWallpaperOffset;
1005ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka        }
1006ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka
1007ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka        public void setFinalX(float x) {
1008ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka            mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f));
1009ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka        }
1010ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka
1011ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka        public void setFinalY(float y) {
1012ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka            mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f));
1013ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka        }
1014ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka
1015ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka        public void jumpToFinal() {
1016ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka            mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset;
1017ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka            mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset;
1018ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka        }
10198f573952b8729b4319043ae0908997ecd2d68951Dianne Hackborn    }
1020aafa03cbb925c74be1c13f8bb99d928be429e62fWinson Chung
1021340c5f3a708efa280a120708594247952ca65182Michael Jurka    @Override
1022340c5f3a708efa280a120708594247952ca65182Michael Jurka    public void computeScroll() {
1023340c5f3a708efa280a120708594247952ca65182Michael Jurka        super.computeScroll();
1024beff8c6a13d5b5ad69f5a85ee0150cecd28e6341Adam Cohen        syncWallpaperOffsetWithScroll();
1025340c5f3a708efa280a120708594247952ca65182Michael Jurka    }
1026340c5f3a708efa280a120708594247952ca65182Michael Jurka
102794f78a5c44c08b258f59b2c78ff6694e5eaca827Patrick Dubroy    void showOutlines() {
1028d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka        if (!isSmall() && !mIsSwitchingState) {
10299171e6d8a2b7b5aa136617b9779a8bbadc5259f7Winson Chung            if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel();
10309171e6d8a2b7b5aa136617b9779a8bbadc5259f7Winson Chung            if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel();
10319171e6d8a2b7b5aa136617b9779a8bbadc5259f7Winson Chung            mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f);
10329171e6d8a2b7b5aa136617b9779a8bbadc5259f7Winson Chung            mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION);
10339171e6d8a2b7b5aa136617b9779a8bbadc5259f7Winson Chung            mChildrenOutlineFadeInAnimation.start();
10343e7c7634531302271270c8cf418abc959d621cbcMichael Jurka        }
1035f34bab59fc0260f926aec44d044883dce1b4191fAdam Cohen    }
1036f34bab59fc0260f926aec44d044883dce1b4191fAdam Cohen
103794f78a5c44c08b258f59b2c78ff6694e5eaca827Patrick Dubroy    void hideOutlines() {
1038d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka        if (!isSmall() && !mIsSwitchingState) {
10399171e6d8a2b7b5aa136617b9779a8bbadc5259f7Winson Chung            if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel();
10409171e6d8a2b7b5aa136617b9779a8bbadc5259f7Winson Chung            if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel();
10419171e6d8a2b7b5aa136617b9779a8bbadc5259f7Winson Chung            mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f);
10429171e6d8a2b7b5aa136617b9779a8bbadc5259f7Winson Chung            mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION);
10439171e6d8a2b7b5aa136617b9779a8bbadc5259f7Winson Chung            mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY);
10449171e6d8a2b7b5aa136617b9779a8bbadc5259f7Winson Chung            mChildrenOutlineFadeOutAnimation.start();
10453e7c7634531302271270c8cf418abc959d621cbcMichael Jurka        }
1046f34bab59fc0260f926aec44d044883dce1b4191fAdam Cohen    }
1047f34bab59fc0260f926aec44d044883dce1b4191fAdam Cohen
104894f78a5c44c08b258f59b2c78ff6694e5eaca827Patrick Dubroy    public void showOutlinesTemporarily() {
104994f78a5c44c08b258f59b2c78ff6694e5eaca827Patrick Dubroy        if (!mIsPageMoving && !isTouchActive()) {
105094f78a5c44c08b258f59b2c78ff6694e5eaca827Patrick Dubroy            snapToPage(mCurrentPage);
105194f78a5c44c08b258f59b2c78ff6694e5eaca827Patrick Dubroy        }
105294f78a5c44c08b258f59b2c78ff6694e5eaca827Patrick Dubroy    }
105394f78a5c44c08b258f59b2c78ff6694e5eaca827Patrick Dubroy
10549171e6d8a2b7b5aa136617b9779a8bbadc5259f7Winson Chung    public void setChildrenOutlineAlpha(float alpha) {
10559171e6d8a2b7b5aa136617b9779a8bbadc5259f7Winson Chung        mChildrenOutlineAlpha = alpha;
1056f34bab59fc0260f926aec44d044883dce1b4191fAdam Cohen        for (int i = 0; i < getChildCount(); i++) {
1057f34bab59fc0260f926aec44d044883dce1b4191fAdam Cohen            CellLayout cl = (CellLayout) getChildAt(i);
1058f34bab59fc0260f926aec44d044883dce1b4191fAdam Cohen            cl.setBackgroundAlpha(alpha);
1059f34bab59fc0260f926aec44d044883dce1b4191fAdam Cohen        }
1060f34bab59fc0260f926aec44d044883dce1b4191fAdam Cohen    }
1061f34bab59fc0260f926aec44d044883dce1b4191fAdam Cohen
10629171e6d8a2b7b5aa136617b9779a8bbadc5259f7Winson Chung    public float getChildrenOutlineAlpha() {
10639171e6d8a2b7b5aa136617b9779a8bbadc5259f7Winson Chung        return mChildrenOutlineAlpha;
10649171e6d8a2b7b5aa136617b9779a8bbadc5259f7Winson Chung    }
10659171e6d8a2b7b5aa136617b9779a8bbadc5259f7Winson Chung
10669c6fbed48783dacd9bc6b4ec5f2cc8e59ec7ee37Michael Jurka    void disableBackground() {
10679c6fbed48783dacd9bc6b4ec5f2cc8e59ec7ee37Michael Jurka        mDrawBackground = false;
10689c6fbed48783dacd9bc6b4ec5f2cc8e59ec7ee37Michael Jurka    }
10699c6fbed48783dacd9bc6b4ec5f2cc8e59ec7ee37Michael Jurka    void enableBackground() {
10709c6fbed48783dacd9bc6b4ec5f2cc8e59ec7ee37Michael Jurka        mDrawBackground = true;
10719c6fbed48783dacd9bc6b4ec5f2cc8e59ec7ee37Michael Jurka    }
10729c6fbed48783dacd9bc6b4ec5f2cc8e59ec7ee37Michael Jurka
10737bdb25a9894970da74248c9cdc606d0e1ba05c99Michael Jurka    private void animateBackgroundGradient(float finalAlpha, boolean animated) {
1074b4b7fa7c0383b6af58d73d3e024b91d586148cf8Winson Chung        if (mBackground == null) return;
1075b9e14974ae5c03bd996bc102ed23a24126449990Michael Jurka        if (mBackgroundFadeInAnimation != null) {
1076b9e14974ae5c03bd996bc102ed23a24126449990Michael Jurka            mBackgroundFadeInAnimation.cancel();
1077b9e14974ae5c03bd996bc102ed23a24126449990Michael Jurka            mBackgroundFadeInAnimation = null;
1078b9e14974ae5c03bd996bc102ed23a24126449990Michael Jurka        }
1079b9e14974ae5c03bd996bc102ed23a24126449990Michael Jurka        if (mBackgroundFadeOutAnimation != null) {
1080b9e14974ae5c03bd996bc102ed23a24126449990Michael Jurka            mBackgroundFadeOutAnimation.cancel();
1081b9e14974ae5c03bd996bc102ed23a24126449990Michael Jurka            mBackgroundFadeOutAnimation = null;
1082b9e14974ae5c03bd996bc102ed23a24126449990Michael Jurka        }
10837bdb25a9894970da74248c9cdc606d0e1ba05c99Michael Jurka        float startAlpha = getBackgroundAlpha();
10847bdb25a9894970da74248c9cdc606d0e1ba05c99Michael Jurka        if (finalAlpha != startAlpha) {
10857bdb25a9894970da74248c9cdc606d0e1ba05c99Michael Jurka            if (animated) {
10867bdb25a9894970da74248c9cdc606d0e1ba05c99Michael Jurka                mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(startAlpha, finalAlpha);
10877bdb25a9894970da74248c9cdc606d0e1ba05c99Michael Jurka                mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() {
10887bdb25a9894970da74248c9cdc606d0e1ba05c99Michael Jurka                    public void onAnimationUpdate(ValueAnimator animation) {
10897bdb25a9894970da74248c9cdc606d0e1ba05c99Michael Jurka                        setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue());
10907bdb25a9894970da74248c9cdc606d0e1ba05c99Michael Jurka                    }
10917bdb25a9894970da74248c9cdc606d0e1ba05c99Michael Jurka                });
10927bdb25a9894970da74248c9cdc606d0e1ba05c99Michael Jurka                mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f));
10937bdb25a9894970da74248c9cdc606d0e1ba05c99Michael Jurka                mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION);
10947bdb25a9894970da74248c9cdc606d0e1ba05c99Michael Jurka                mBackgroundFadeOutAnimation.start();
10957bdb25a9894970da74248c9cdc606d0e1ba05c99Michael Jurka            } else {
10967bdb25a9894970da74248c9cdc606d0e1ba05c99Michael Jurka                setBackgroundAlpha(finalAlpha);
10977bdb25a9894970da74248c9cdc606d0e1ba05c99Michael Jurka            }
1098b9e14974ae5c03bd996bc102ed23a24126449990Michael Jurka        }
10999171e6d8a2b7b5aa136617b9779a8bbadc5259f7Winson Chung    }
11009171e6d8a2b7b5aa136617b9779a8bbadc5259f7Winson Chung
11019171e6d8a2b7b5aa136617b9779a8bbadc5259f7Winson Chung    public void setBackgroundAlpha(float alpha) {
11029c6fbed48783dacd9bc6b4ec5f2cc8e59ec7ee37Michael Jurka        if (alpha != mBackgroundAlpha) {
11039c6fbed48783dacd9bc6b4ec5f2cc8e59ec7ee37Michael Jurka            mBackgroundAlpha = alpha;
11049c6fbed48783dacd9bc6b4ec5f2cc8e59ec7ee37Michael Jurka            invalidate();
11059c6fbed48783dacd9bc6b4ec5f2cc8e59ec7ee37Michael Jurka        }
11069171e6d8a2b7b5aa136617b9779a8bbadc5259f7Winson Chung    }
11079171e6d8a2b7b5aa136617b9779a8bbadc5259f7Winson Chung
1108f34bab59fc0260f926aec44d044883dce1b4191fAdam Cohen    public float getBackgroundAlpha() {
1109f34bab59fc0260f926aec44d044883dce1b4191fAdam Cohen        return mBackgroundAlpha;
1110f34bab59fc0260f926aec44d044883dce1b4191fAdam Cohen    }
1111f34bab59fc0260f926aec44d044883dce1b4191fAdam Cohen
11126b879f0a5885274a85333531e091283405d490ccAdam Lesinski    /**
11136b879f0a5885274a85333531e091283405d490ccAdam Lesinski     * Due to 3D transformations, if two CellLayouts are theoretically touching each other,
11146b879f0a5885274a85333531e091283405d490ccAdam Lesinski     * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived
11156b879f0a5885274a85333531e091283405d490ccAdam Lesinski     * as being larger. This method computes what offset the rotated view should be translated
11166b879f0a5885274a85333531e091283405d490ccAdam Lesinski     * in order to minimize this perceived gap.
11176b879f0a5885274a85333531e091283405d490ccAdam Lesinski     * @param degrees Angle of the view
11186b879f0a5885274a85333531e091283405d490ccAdam Lesinski     * @param width Width of the view
11196b879f0a5885274a85333531e091283405d490ccAdam Lesinski     * @param height Height of the view
11206b879f0a5885274a85333531e091283405d490ccAdam Lesinski     * @return Offset to be used in a View.setTranslationX() call
11216b879f0a5885274a85333531e091283405d490ccAdam Lesinski     */
11226b879f0a5885274a85333531e091283405d490ccAdam Lesinski    private float getOffsetXForRotation(float degrees, int width, int height) {
11236b879f0a5885274a85333531e091283405d490ccAdam Lesinski        mMatrix.reset();
11246b879f0a5885274a85333531e091283405d490ccAdam Lesinski        mCamera.save();
11256b879f0a5885274a85333531e091283405d490ccAdam Lesinski        mCamera.rotateY(Math.abs(degrees));
11266b879f0a5885274a85333531e091283405d490ccAdam Lesinski        mCamera.getMatrix(mMatrix);
11276b879f0a5885274a85333531e091283405d490ccAdam Lesinski        mCamera.restore();
11286b879f0a5885274a85333531e091283405d490ccAdam Lesinski
11296b879f0a5885274a85333531e091283405d490ccAdam Lesinski        mMatrix.preTranslate(-width * 0.5f, -height * 0.5f);
11306b879f0a5885274a85333531e091283405d490ccAdam Lesinski        mMatrix.postTranslate(width * 0.5f, height * 0.5f);
11316b879f0a5885274a85333531e091283405d490ccAdam Lesinski        mTempFloat2[0] = width;
11326b879f0a5885274a85333531e091283405d490ccAdam Lesinski        mTempFloat2[1] = height;
11336b879f0a5885274a85333531e091283405d490ccAdam Lesinski        mMatrix.mapPoints(mTempFloat2);
11346b879f0a5885274a85333531e091283405d490ccAdam Lesinski        return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f);
11356b879f0a5885274a85333531e091283405d490ccAdam Lesinski    }
11366b879f0a5885274a85333531e091283405d490ccAdam Lesinski
113768d739365bf650fe7fecf99cd3bfe63a0d41bd12Adam Cohen    float backgroundAlphaInterpolator(float r) {
113868d739365bf650fe7fecf99cd3bfe63a0d41bd12Adam Cohen        float pivotA = 0.1f;
113968d739365bf650fe7fecf99cd3bfe63a0d41bd12Adam Cohen        float pivotB = 0.4f;
114068d739365bf650fe7fecf99cd3bfe63a0d41bd12Adam Cohen        if (r < pivotA) {
114168d739365bf650fe7fecf99cd3bfe63a0d41bd12Adam Cohen            return 0;
114268d739365bf650fe7fecf99cd3bfe63a0d41bd12Adam Cohen        } else if (r > pivotB) {
114368d739365bf650fe7fecf99cd3bfe63a0d41bd12Adam Cohen            return 1.0f;
114468d739365bf650fe7fecf99cd3bfe63a0d41bd12Adam Cohen        } else {
114568d739365bf650fe7fecf99cd3bfe63a0d41bd12Adam Cohen            return (r - pivotA)/(pivotB - pivotA);
114668d739365bf650fe7fecf99cd3bfe63a0d41bd12Adam Cohen        }
114768d739365bf650fe7fecf99cd3bfe63a0d41bd12Adam Cohen    }
114868d739365bf650fe7fecf99cd3bfe63a0d41bd12Adam Cohen
114968d739365bf650fe7fecf99cd3bfe63a0d41bd12Adam Cohen    float overScrollBackgroundAlphaInterpolator(float r) {
1150e0f66b546994a9bdee452851c17a148db02ec300Adam Cohen        float threshold = 0.08f;
115168d739365bf650fe7fecf99cd3bfe63a0d41bd12Adam Cohen
115268d739365bf650fe7fecf99cd3bfe63a0d41bd12Adam Cohen        if (r > mOverScrollMaxBackgroundAlpha) {
115368d739365bf650fe7fecf99cd3bfe63a0d41bd12Adam Cohen            mOverScrollMaxBackgroundAlpha = r;
115468d739365bf650fe7fecf99cd3bfe63a0d41bd12Adam Cohen        } else if (r < mOverScrollMaxBackgroundAlpha) {
115568d739365bf650fe7fecf99cd3bfe63a0d41bd12Adam Cohen            r = mOverScrollMaxBackgroundAlpha;
115668d739365bf650fe7fecf99cd3bfe63a0d41bd12Adam Cohen        }
115768d739365bf650fe7fecf99cd3bfe63a0d41bd12Adam Cohen
115868d739365bf650fe7fecf99cd3bfe63a0d41bd12Adam Cohen        return Math.min(r / threshold, 1.0f);
115968d739365bf650fe7fecf99cd3bfe63a0d41bd12Adam Cohen    }
116068d739365bf650fe7fecf99cd3bfe63a0d41bd12Adam Cohen
1161b5ba097015c4794fa822f30b38a60a7070a00097Adam Cohen    private void screenScrolledLargeUI(int screenCenter) {
116270ed13b370e390010ee57eed5983fb86da061ed9Adam Cohen        if (isSwitchingState()) return;
1163ebea84d1c95f4c38ba8cee46cd586fd757b4fce2Adam Cohen        boolean isInOverscroll = false;
116421f12b52a54d2658ed14fcf7bb1ca17a198f62beAdam Cohen        for (int i = 0; i < getChildCount(); i++) {
11651b0aaac0b3abd777ed319341f95a8dfff23c79f4Adam Cohen            CellLayout cl = (CellLayout) getChildAt(i);
11661b0aaac0b3abd777ed319341f95a8dfff23c79f4Adam Cohen            if (cl != null) {
1167b5ba097015c4794fa822f30b38a60a7070a00097Adam Cohen                float scrollProgress = getScrollProgress(screenCenter, cl, i);
116821f12b52a54d2658ed14fcf7bb1ca17a198f62beAdam Cohen                float rotation = WORKSPACE_ROTATION * scrollProgress;
11696b879f0a5885274a85333531e091283405d490ccAdam Lesinski                float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight());
117068d739365bf650fe7fecf99cd3bfe63a0d41bd12Adam Cohen
1171b5ba097015c4794fa822f30b38a60a7070a00097Adam Cohen                // If the current page (i) is being over scrolled, we use a different
1172b5ba097015c4794fa822f30b38a60a7070a00097Adam Cohen                // set of rules for setting the background alpha multiplier.
1173cff6af81d721415785bddc2efd74e179d2def9daAdam Cohen                if (!isSmall()) {
1174ebea84d1c95f4c38ba8cee46cd586fd757b4fce2Adam Cohen                    if ((mOverScrollX < 0 && i == 0) || (mOverScrollX > mMaxScrollX &&
1175ebea84d1c95f4c38ba8cee46cd586fd757b4fce2Adam Cohen                            i == getChildCount() -1)) {
1176ebea84d1c95f4c38ba8cee46cd586fd757b4fce2Adam Cohen                        isInOverscroll = true;
1177ebea84d1c95f4c38ba8cee46cd586fd757b4fce2Adam Cohen                        rotation *= -1;
1178cff6af81d721415785bddc2efd74e179d2def9daAdam Cohen                        cl.setBackgroundAlphaMultiplier(
1179cff6af81d721415785bddc2efd74e179d2def9daAdam Cohen                                overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress)));
1180cff6af81d721415785bddc2efd74e179d2def9daAdam Cohen                        mOverScrollPageIndex = i;
1181ebea84d1c95f4c38ba8cee46cd586fd757b4fce2Adam Cohen                        cl.setOverScrollAmount(Math.abs(scrollProgress), i == 0);
1182ebea84d1c95f4c38ba8cee46cd586fd757b4fce2Adam Cohen                        cl.setPivotX(cl.getMeasuredWidth() * (i == 0 ? 0.75f : 0.25f));
1183ebea84d1c95f4c38ba8cee46cd586fd757b4fce2Adam Cohen                        cl.setPivotY(cl.getMeasuredHeight() * 0.5f);
1184ebea84d1c95f4c38ba8cee46cd586fd757b4fce2Adam Cohen                        cl.setOverscrollTransformsDirty(true);
1185cff6af81d721415785bddc2efd74e179d2def9daAdam Cohen                    } else if (mOverScrollPageIndex != i) {
1186cff6af81d721415785bddc2efd74e179d2def9daAdam Cohen                        cl.setBackgroundAlphaMultiplier(
1187cff6af81d721415785bddc2efd74e179d2def9daAdam Cohen                                backgroundAlphaInterpolator(Math.abs(scrollProgress)));
1188cff6af81d721415785bddc2efd74e179d2def9daAdam Cohen                    }
1189b5ba097015c4794fa822f30b38a60a7070a00097Adam Cohen                }
11907372c59277a23a31eeb1513a554b29d7bf05aedbMichael Jurka                cl.setTranslationX(translationX);
11917372c59277a23a31eeb1513a554b29d7bf05aedbMichael Jurka                cl.setRotationY(rotation);
119273894964c27f68a3a7ffb45bfba76520613fd3f0Adam Cohen                if (mFadeInAdjacentScreens && !isSmall()) {
119373894964c27f68a3a7ffb45bfba76520613fd3f0Adam Cohen                    float alpha = 1 - Math.abs(scrollProgress);
11947372c59277a23a31eeb1513a554b29d7bf05aedbMichael Jurka                    cl.setAlpha(alpha);
119573894964c27f68a3a7ffb45bfba76520613fd3f0Adam Cohen                }
1196f34bab59fc0260f926aec44d044883dce1b4191fAdam Cohen            }
1197f34bab59fc0260f926aec44d044883dce1b4191fAdam Cohen        }
1198ebea84d1c95f4c38ba8cee46cd586fd757b4fce2Adam Cohen        if (!isSwitchingState() && !isInOverscroll) {
1199ebea84d1c95f4c38ba8cee46cd586fd757b4fce2Adam Cohen            ((CellLayout) getChildAt(0)).resetOverscrollTransforms();
1200ebea84d1c95f4c38ba8cee46cd586fd757b4fce2Adam Cohen            ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms();
1201ebea84d1c95f4c38ba8cee46cd586fd757b4fce2Adam Cohen        }
120273894964c27f68a3a7ffb45bfba76520613fd3f0Adam Cohen        invalidate();
1203f34bab59fc0260f926aec44d044883dce1b4191fAdam Cohen    }
1204f34bab59fc0260f926aec44d044883dce1b4191fAdam Cohen
1205b5ba097015c4794fa822f30b38a60a7070a00097Adam Cohen    private void screenScrolledStandardUI(int screenCenter) {
1206ebea84d1c95f4c38ba8cee46cd586fd757b4fce2Adam Cohen        if (mOverScrollX < 0 || mOverScrollX > mMaxScrollX) {
1207ebea84d1c95f4c38ba8cee46cd586fd757b4fce2Adam Cohen            int index = mOverScrollX < 0 ? 0 : getChildCount() - 1;
1208b5ba097015c4794fa822f30b38a60a7070a00097Adam Cohen            CellLayout cl = (CellLayout) getChildAt(index);
1209b5ba097015c4794fa822f30b38a60a7070a00097Adam Cohen            float scrollProgress = getScrollProgress(screenCenter, cl, index);
1210b5ba097015c4794fa822f30b38a60a7070a00097Adam Cohen            cl.setOverScrollAmount(Math.abs(scrollProgress), index == 0);
1211b5ba097015c4794fa822f30b38a60a7070a00097Adam Cohen            float rotation = - WORKSPACE_OVERSCROLL_ROTATION * scrollProgress;
1212cff6af81d721415785bddc2efd74e179d2def9daAdam Cohen            cl.setCameraDistance(mDensity * CAMERA_DISTANCE);
1213b5ba097015c4794fa822f30b38a60a7070a00097Adam Cohen            cl.setPivotX(cl.getMeasuredWidth() * (index == 0 ? 0.75f : 0.25f));
1214ebea84d1c95f4c38ba8cee46cd586fd757b4fce2Adam Cohen            cl.setPivotY(cl.getMeasuredHeight() * 0.5f);
1215b5ba097015c4794fa822f30b38a60a7070a00097Adam Cohen            cl.setRotationY(rotation);
1216ebea84d1c95f4c38ba8cee46cd586fd757b4fce2Adam Cohen            cl.setOverscrollTransformsDirty(true);
121721b411074e39fd10cbc8dd0220bb159da4af2c76Adam Cohen            setFadeForOverScroll(Math.abs(scrollProgress));
1218b5ba097015c4794fa822f30b38a60a7070a00097Adam Cohen        } else {
121921b411074e39fd10cbc8dd0220bb159da4af2c76Adam Cohen            if (mOverscrollFade != 0) {
122021b411074e39fd10cbc8dd0220bb159da4af2c76Adam Cohen                setFadeForOverScroll(0);
122121b411074e39fd10cbc8dd0220bb159da4af2c76Adam Cohen            }
12227842d7fc78eebfb2b7cbad23adf11f7b6d923f79Adam Cohen            // We don't want to mess with the translations during transitions
12237842d7fc78eebfb2b7cbad23adf11f7b6d923f79Adam Cohen            if (!isSwitchingState()) {
1224ebea84d1c95f4c38ba8cee46cd586fd757b4fce2Adam Cohen                ((CellLayout) getChildAt(0)).resetOverscrollTransforms();
1225ebea84d1c95f4c38ba8cee46cd586fd757b4fce2Adam Cohen                ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms();
12267842d7fc78eebfb2b7cbad23adf11f7b6d923f79Adam Cohen            }
1227b5ba097015c4794fa822f30b38a60a7070a00097Adam Cohen        }
1228b5ba097015c4794fa822f30b38a60a7070a00097Adam Cohen    }
1229b5ba097015c4794fa822f30b38a60a7070a00097Adam Cohen
1230b5ba097015c4794fa822f30b38a60a7070a00097Adam Cohen    @Override
1231b5ba097015c4794fa822f30b38a60a7070a00097Adam Cohen    protected void screenScrolled(int screenCenter) {
1232b5ba097015c4794fa822f30b38a60a7070a00097Adam Cohen        if (LauncherApplication.isScreenLarge()) {
123373894964c27f68a3a7ffb45bfba76520613fd3f0Adam Cohen            // We don't call super.screenScrolled() here because we handle the adjacent pages alpha
123473894964c27f68a3a7ffb45bfba76520613fd3f0Adam Cohen            // ourselves (for efficiency), and there are no scrolling indicators to update.
1235b5ba097015c4794fa822f30b38a60a7070a00097Adam Cohen            screenScrolledLargeUI(screenCenter);
1236b5ba097015c4794fa822f30b38a60a7070a00097Adam Cohen        } else {
123773894964c27f68a3a7ffb45bfba76520613fd3f0Adam Cohen            super.screenScrolled(screenCenter);
1238b5ba097015c4794fa822f30b38a60a7070a00097Adam Cohen            screenScrolledStandardUI(screenCenter);
1239b5ba097015c4794fa822f30b38a60a7070a00097Adam Cohen        }
1240b5ba097015c4794fa822f30b38a60a7070a00097Adam Cohen    }
1241b5ba097015c4794fa822f30b38a60a7070a00097Adam Cohen
1242b5ba097015c4794fa822f30b38a60a7070a00097Adam Cohen    @Override
1243b5ba097015c4794fa822f30b38a60a7070a00097Adam Cohen    protected void overScroll(float amount) {
1244b5ba097015c4794fa822f30b38a60a7070a00097Adam Cohen        if (LauncherApplication.isScreenLarge()) {
1245b5ba097015c4794fa822f30b38a60a7070a00097Adam Cohen            dampedOverScroll(amount);
1246b5ba097015c4794fa822f30b38a60a7070a00097Adam Cohen        } else {
1247b5ba097015c4794fa822f30b38a60a7070a00097Adam Cohen            acceleratedOverScroll(amount);
1248b5ba097015c4794fa822f30b38a60a7070a00097Adam Cohen        }
1249b5ba097015c4794fa822f30b38a60a7070a00097Adam Cohen    }
1250b5ba097015c4794fa822f30b38a60a7070a00097Adam Cohen
125100acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato    protected void onAttachedToWindow() {
125200acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato        super.onAttachedToWindow();
12539c6fbed48783dacd9bc6b4ec5f2cc8e59ec7ee37Michael Jurka        mWindowToken = getWindowToken();
1254956091ba7863bd72086275e61084864994dd6fa7Joe Onorato        computeScroll();
12559c6fbed48783dacd9bc6b4ec5f2cc8e59ec7ee37Michael Jurka        mDragController.setWindowToken(mWindowToken);
12569c6fbed48783dacd9bc6b4ec5f2cc8e59ec7ee37Michael Jurka    }
12579c6fbed48783dacd9bc6b4ec5f2cc8e59ec7ee37Michael Jurka
12589c6fbed48783dacd9bc6b4ec5f2cc8e59ec7ee37Michael Jurka    protected void onDetachedFromWindow() {
12599c6fbed48783dacd9bc6b4ec5f2cc8e59ec7ee37Michael Jurka        mWindowToken = null;
126000acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato    }
126100acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato
126231dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    @Override
126328750fba6a2d141eb9a1e566718c17236030b815Michael Jurka    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
1264c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka        if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) {
1265c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka            mUpdateWallpaperOffsetImmediately = true;
1266c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka        }
12670142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka        super.onLayout(changed, left, top, right, bottom);
126831dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    }
126931dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project
127031dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    @Override
12719171e6d8a2b7b5aa136617b9779a8bbadc5259f7Winson Chung    protected void onDraw(Canvas canvas) {
1272ab1983f46ce0ee0c94ea1170d21a67eb4e3c7967Michael Jurka        updateWallpaperOffsets();
1273c5b262ccf639fedac2aff5bb8238342f95396338Michael Jurka
12749171e6d8a2b7b5aa136617b9779a8bbadc5259f7Winson Chung        // Draw the background gradient if necessary
12759c6fbed48783dacd9bc6b4ec5f2cc8e59ec7ee37Michael Jurka        if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) {
12768d006d5e144ae33e509ea42e0b9760ef6c5bc884Winson Chung            int alpha = (int) (mBackgroundAlpha * 255);
1277f0ea4d3378be7b962c8e0bce2392df5e82491fb8Winson Chung            mBackground.setAlpha(alpha);
1278f0ea4d3378be7b962c8e0bce2392df5e82491fb8Winson Chung            mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(),
1279f0ea4d3378be7b962c8e0bce2392df5e82491fb8Winson Chung                    getMeasuredHeight());
1280f0ea4d3378be7b962c8e0bce2392df5e82491fb8Winson Chung            mBackground.draw(canvas);
12819171e6d8a2b7b5aa136617b9779a8bbadc5259f7Winson Chung        }
1282073a46ff635d089cbcb15d939d1de42dd2b86c97Adam Cohen
12839171e6d8a2b7b5aa136617b9779a8bbadc5259f7Winson Chung        super.onDraw(canvas);
12849171e6d8a2b7b5aa136617b9779a8bbadc5259f7Winson Chung    }
12859171e6d8a2b7b5aa136617b9779a8bbadc5259f7Winson Chung
128621b411074e39fd10cbc8dd0220bb159da4af2c76Adam Cohen    boolean isDrawingBackgroundGradient() {
128721b411074e39fd10cbc8dd0220bb159da4af2c76Adam Cohen        return (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground);
128821b411074e39fd10cbc8dd0220bb159da4af2c76Adam Cohen    }
128921b411074e39fd10cbc8dd0220bb159da4af2c76Adam Cohen
1290dfab7f0285eea71abd7fa64e893541fdf831c73bMichael Jurka    @Override
1291dfab7f0285eea71abd7fa64e893541fdf831c73bMichael Jurka    protected void dispatchDraw(Canvas canvas) {
1292557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung        super.dispatchDraw(canvas);
1293557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung
1294557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung        if (mInScrollArea && !LauncherApplication.isScreenLarge()) {
1295557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung            final int width = getWidth();
1296557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung            final int height = getHeight();
1297557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung            final int pageHeight = getChildAt(0).getHeight();
1298557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung
1299dea74b7d12b0fcd50bfdb4274f9867ba76d75238Winson Chung            // Set the height of the outline to be the height of the page
1300dea74b7d12b0fcd50bfdb4274f9867ba76d75238Winson Chung            final int offset = (height - pageHeight - mPaddingTop - mPaddingBottom) / 2;
1301dea74b7d12b0fcd50bfdb4274f9867ba76d75238Winson Chung            final int paddingTop = mPaddingTop + offset;
1302dea74b7d12b0fcd50bfdb4274f9867ba76d75238Winson Chung            final int paddingBottom = mPaddingBottom + offset;
1303557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung
1304aa15ffe60e28b923ebf3e3162ce427ca6feae803Winson Chung            final int page = (mNextPage != INVALID_PAGE ? mNextPage : mCurrentPage);
1305aa15ffe60e28b923ebf3e3162ce427ca6feae803Winson Chung            final CellLayout leftPage = (CellLayout) getChildAt(page - 1);
1306aa15ffe60e28b923ebf3e3162ce427ca6feae803Winson Chung            final CellLayout rightPage = (CellLayout) getChildAt(page + 1);
1307557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung
1308557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung            if (leftPage != null && leftPage.getIsDragOverlapping()) {
1309557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung                final Drawable d = getResources().getDrawable(R.drawable.page_hover_left_holo);
1310dea74b7d12b0fcd50bfdb4274f9867ba76d75238Winson Chung                d.setBounds(mScrollX, paddingTop, mScrollX + d.getIntrinsicWidth(),
1311dea74b7d12b0fcd50bfdb4274f9867ba76d75238Winson Chung                        height - paddingBottom);
1312557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung                d.draw(canvas);
1313557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung            } else if (rightPage != null && rightPage.getIsDragOverlapping()) {
1314557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung                final Drawable d = getResources().getDrawable(R.drawable.page_hover_right_holo);
1315dea74b7d12b0fcd50bfdb4274f9867ba76d75238Winson Chung                d.setBounds(mScrollX + width - d.getIntrinsicWidth(), paddingTop, mScrollX + width,
1316dea74b7d12b0fcd50bfdb4274f9867ba76d75238Winson Chung                        height - paddingBottom);
1317557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung                d.draw(canvas);
13180207c522472d7252f146f4d39efa456ca5248c6bPatrick Dubroy            }
131931dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project        }
132031dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    }
132131dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project
132231dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    @Override
132331dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) {
1324678862186af4ea70d9b4012c9bc127e7fea5e607Joe Onorato        if (!mLauncher.isAllAppsVisible()) {
132531dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project            final Folder openFolder = getOpenFolder();
132631dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project            if (openFolder != null) {
132731dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project                return openFolder.requestFocus(direction, previouslyFocusedRect);
132831dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project            } else {
13290142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka                return super.onRequestFocusInDescendants(direction, previouslyFocusedRect);
133031dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project            }
133131dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project        }
133231dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project        return false;
133331dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    }
133431dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project
133531dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    @Override
133697d85d23b013347bead4e2f5fa430a79ce69431eWinson Chung    public int getDescendantFocusability() {
1337d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka        if (isSmall()) {
133897d85d23b013347bead4e2f5fa430a79ce69431eWinson Chung            return ViewGroup.FOCUS_BLOCK_DESCENDANTS;
133997d85d23b013347bead4e2f5fa430a79ce69431eWinson Chung        }
134097d85d23b013347bead4e2f5fa430a79ce69431eWinson Chung        return super.getDescendantFocusability();
134197d85d23b013347bead4e2f5fa430a79ce69431eWinson Chung    }
134297d85d23b013347bead4e2f5fa430a79ce69431eWinson Chung
134397d85d23b013347bead4e2f5fa430a79ce69431eWinson Chung    @Override
1344c2e24c0a37ddeab930f731c062705d435e477f75Romain Guy    public void addFocusables(ArrayList<View> views, int direction, int focusableMode) {
1345678862186af4ea70d9b4012c9bc127e7fea5e607Joe Onorato        if (!mLauncher.isAllAppsVisible()) {
134631dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project            final Folder openFolder = getOpenFolder();
13470142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka            if (openFolder != null) {
134831dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project                openFolder.addFocusables(views, direction);
13490142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka            } else {
13500142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka                super.addFocusables(views, direction, focusableMode);
135131dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project            }
135231dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project        }
135331dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    }
135431dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project
1355d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka    public boolean isSmall() {
13563384c7be3cf735f68a90d835627350fa48b94d48Adam Cohen        return mState == State.SMALL || mState == State.SPRING_LOADED;
1357d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka    }
1358d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka
13590142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka    void enableChildrenCache(int fromPage, int toPage) {
13600142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka        if (fromPage > toPage) {
13610142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka            final int temp = fromPage;
13620142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka            fromPage = toPage;
13630142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka            toPage = temp;
13643a2b3f2be58843d26549fb0ec6c6533627c7cd19Mike Cleron        }
1365aafa03cbb925c74be1c13f8bb99d928be429e62fWinson Chung
1366dee0589388ba0f6373912e18bf86243282fb3b9bMichael Jurka        final int screenCount = getChildCount();
1367fea5d0250767ab938f623a404e6292a32dd2fdf5Adam Powell
13680142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka        fromPage = Math.max(fromPage, 0);
13690142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka        toPage = Math.min(toPage, screenCount - 1);
1370fea5d0250767ab938f623a404e6292a32dd2fdf5Adam Powell
13710142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka        for (int i = fromPage; i <= toPage; i++) {
137231dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project            final CellLayout layout = (CellLayout) getChildAt(i);
137331dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project            layout.setChildrenDrawnWithCacheEnabled(true);
137431dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project            layout.setChildrenDrawingCacheEnabled(true);
137531dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project        }
137631dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    }
137731dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project
137831dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    void clearChildrenCache() {
1379dee0589388ba0f6373912e18bf86243282fb3b9bMichael Jurka        final int screenCount = getChildCount();
1380dee0589388ba0f6373912e18bf86243282fb3b9bMichael Jurka        for (int i = 0; i < screenCount; i++) {
138131dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project            final CellLayout layout = (CellLayout) getChildAt(i);
138231dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project            layout.setChildrenDrawnWithCacheEnabled(false);
13838182e5bc3c2d1a0140df345599b89369d457bb4aAdam Cohen            // In software mode, we don't want the items to continue to be drawn into bitmaps
13848182e5bc3c2d1a0140df345599b89369d457bb4aAdam Cohen            if (!isHardwareAccelerated()) {
13858182e5bc3c2d1a0140df345599b89369d457bb4aAdam Cohen                layout.setChildrenDrawingCacheEnabled(false);
13868182e5bc3c2d1a0140df345599b89369d457bb4aAdam Cohen            }
138731dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project        }
138831dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    }
138931dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project
1390d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka    private void updateChildrenLayersEnabled() {
13917777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen        boolean small = isSmall() || mIsSwitchingState;
1392d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka        boolean dragging = mAnimatingViewIntoPlace || mIsDragOccuring;
1393d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka        boolean enableChildrenLayers = small || dragging || isPageMoving();
1394d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka
1395d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka        if (enableChildrenLayers != mChildrenLayersEnabled) {
1396d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka            mChildrenLayersEnabled = enableChildrenLayers;
139780c69853d64b73e5d62ed33bea1b10680557ee3eMichael Jurka            for (int i = 0; i < getPageCount(); i++) {
139880c69853d64b73e5d62ed33bea1b10680557ee3eMichael Jurka                ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(mChildrenLayersEnabled);
1399d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka            }
1400ce7e05fbe8abd5f25ec47e0e05b5cc76ceb39d2eMichael Jurka        }
1401ce7e05fbe8abd5f25ec47e0e05b5cc76ceb39d2eMichael Jurka    }
1402ce7e05fbe8abd5f25ec47e0e05b5cc76ceb39d2eMichael Jurka
14031d0867c8de6a889bccde9b7e768daef182a25e5cJeff Brown    protected void onWallpaperTap(MotionEvent ev) {
14041d0867c8de6a889bccde9b7e768daef182a25e5cJeff Brown        final int[] position = mTempCell;
14051d0867c8de6a889bccde9b7e768daef182a25e5cJeff Brown        getLocationOnScreen(position);
14061d0867c8de6a889bccde9b7e768daef182a25e5cJeff Brown
14071d0867c8de6a889bccde9b7e768daef182a25e5cJeff Brown        int pointerIndex = ev.getActionIndex();
14081d0867c8de6a889bccde9b7e768daef182a25e5cJeff Brown        position[0] += (int) ev.getX(pointerIndex);
14091d0867c8de6a889bccde9b7e768daef182a25e5cJeff Brown        position[1] += (int) ev.getY(pointerIndex);
14101d0867c8de6a889bccde9b7e768daef182a25e5cJeff Brown
14111d0867c8de6a889bccde9b7e768daef182a25e5cJeff Brown        mWallpaperManager.sendWallpaperCommand(getWindowToken(),
14121d0867c8de6a889bccde9b7e768daef182a25e5cJeff Brown                ev.getAction() == MotionEvent.ACTION_UP
14131d0867c8de6a889bccde9b7e768daef182a25e5cJeff Brown                        ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP,
14141d0867c8de6a889bccde9b7e768daef182a25e5cJeff Brown                position[0], position[1], 0, null);
14151d0867c8de6a889bccde9b7e768daef182a25e5cJeff Brown    }
14161d0867c8de6a889bccde9b7e768daef182a25e5cJeff Brown
141761033d3d86fcae1f654f3fbfc9979d131e265d76Adam Cohen    /*
141861033d3d86fcae1f654f3fbfc9979d131e265d76Adam Cohen     * This interpolator emulates the rate at which the perceived scale of an object changes
141961033d3d86fcae1f654f3fbfc9979d131e265d76Adam Cohen     * as its distance from a camera increases. When this interpolator is applied to a scale
142061033d3d86fcae1f654f3fbfc9979d131e265d76Adam Cohen     * animation on a view, it evokes the sense that the object is shrinking due to moving away
142161033d3d86fcae1f654f3fbfc9979d131e265d76Adam Cohen     * from the camera.
142261033d3d86fcae1f654f3fbfc9979d131e265d76Adam Cohen     */
142361033d3d86fcae1f654f3fbfc9979d131e265d76Adam Cohen    static class ZInterpolator implements TimeInterpolator {
142461033d3d86fcae1f654f3fbfc9979d131e265d76Adam Cohen        private float focalLength;
142561033d3d86fcae1f654f3fbfc9979d131e265d76Adam Cohen
142661033d3d86fcae1f654f3fbfc9979d131e265d76Adam Cohen        public ZInterpolator(float foc) {
142761033d3d86fcae1f654f3fbfc9979d131e265d76Adam Cohen            focalLength = foc;
142861033d3d86fcae1f654f3fbfc9979d131e265d76Adam Cohen        }
142961033d3d86fcae1f654f3fbfc9979d131e265d76Adam Cohen
1430eed565d5126cb40b2a7ecdf5f6e8ac7a7464007bAdam Cohen        public float getInterpolation(float input) {
1431eed565d5126cb40b2a7ecdf5f6e8ac7a7464007bAdam Cohen            return (1.0f - focalLength / (focalLength + input)) /
143261033d3d86fcae1f654f3fbfc9979d131e265d76Adam Cohen                (1.0f - focalLength / (focalLength + 1.0f));
1433cbbaf9862aa160c5e397cb49b554de20981a35feAdam Cohen        }
1434cbbaf9862aa160c5e397cb49b554de20981a35feAdam Cohen    }
1435cbbaf9862aa160c5e397cb49b554de20981a35feAdam Cohen
143661033d3d86fcae1f654f3fbfc9979d131e265d76Adam Cohen    /*
143761033d3d86fcae1f654f3fbfc9979d131e265d76Adam Cohen     * The exact reverse of ZInterpolator.
143861033d3d86fcae1f654f3fbfc9979d131e265d76Adam Cohen     */
143961033d3d86fcae1f654f3fbfc9979d131e265d76Adam Cohen    static class InverseZInterpolator implements TimeInterpolator {
144061033d3d86fcae1f654f3fbfc9979d131e265d76Adam Cohen        private ZInterpolator zInterpolator;
144161033d3d86fcae1f654f3fbfc9979d131e265d76Adam Cohen        public InverseZInterpolator(float foc) {
144261033d3d86fcae1f654f3fbfc9979d131e265d76Adam Cohen            zInterpolator = new ZInterpolator(foc);
144361033d3d86fcae1f654f3fbfc9979d131e265d76Adam Cohen        }
1444cbbaf9862aa160c5e397cb49b554de20981a35feAdam Cohen        public float getInterpolation(float input) {
144561033d3d86fcae1f654f3fbfc9979d131e265d76Adam Cohen            return 1 - zInterpolator.getInterpolation(1 - input);
1446cbbaf9862aa160c5e397cb49b554de20981a35feAdam Cohen        }
1447cbbaf9862aa160c5e397cb49b554de20981a35feAdam Cohen    }
1448cbbaf9862aa160c5e397cb49b554de20981a35feAdam Cohen
144961033d3d86fcae1f654f3fbfc9979d131e265d76Adam Cohen    /*
145061033d3d86fcae1f654f3fbfc9979d131e265d76Adam Cohen     * ZInterpolator compounded with an ease-out.
145161033d3d86fcae1f654f3fbfc9979d131e265d76Adam Cohen     */
145261033d3d86fcae1f654f3fbfc9979d131e265d76Adam Cohen    static class ZoomOutInterpolator implements TimeInterpolator {
1453b64d36e6f8006b3ea5a6c2951af4cf8dea72d08eAdam Cohen        private final DecelerateInterpolator decelerate = new DecelerateInterpolator(0.75f);
1454b64d36e6f8006b3ea5a6c2951af4cf8dea72d08eAdam Cohen        private final ZInterpolator zInterpolator = new ZInterpolator(0.13f);
145561033d3d86fcae1f654f3fbfc9979d131e265d76Adam Cohen
145661033d3d86fcae1f654f3fbfc9979d131e265d76Adam Cohen        public float getInterpolation(float input) {
145761033d3d86fcae1f654f3fbfc9979d131e265d76Adam Cohen            return decelerate.getInterpolation(zInterpolator.getInterpolation(input));
145861033d3d86fcae1f654f3fbfc9979d131e265d76Adam Cohen        }
145961033d3d86fcae1f654f3fbfc9979d131e265d76Adam Cohen    }
146061033d3d86fcae1f654f3fbfc9979d131e265d76Adam Cohen
146161033d3d86fcae1f654f3fbfc9979d131e265d76Adam Cohen    /*
146261033d3d86fcae1f654f3fbfc9979d131e265d76Adam Cohen     * InvereZInterpolator compounded with an ease-out.
146361033d3d86fcae1f654f3fbfc9979d131e265d76Adam Cohen     */
146461033d3d86fcae1f654f3fbfc9979d131e265d76Adam Cohen    static class ZoomInInterpolator implements TimeInterpolator {
146561033d3d86fcae1f654f3fbfc9979d131e265d76Adam Cohen        private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f);
146661033d3d86fcae1f654f3fbfc9979d131e265d76Adam Cohen        private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f);
146761033d3d86fcae1f654f3fbfc9979d131e265d76Adam Cohen
146861033d3d86fcae1f654f3fbfc9979d131e265d76Adam Cohen        public float getInterpolation(float input) {
146961033d3d86fcae1f654f3fbfc9979d131e265d76Adam Cohen            return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input));
147061033d3d86fcae1f654f3fbfc9979d131e265d76Adam Cohen        }
147161033d3d86fcae1f654f3fbfc9979d131e265d76Adam Cohen    }
147261033d3d86fcae1f654f3fbfc9979d131e265d76Adam Cohen
147361033d3d86fcae1f654f3fbfc9979d131e265d76Adam Cohen    private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator();
14743e7c7634531302271270c8cf418abc959d621cbcMichael Jurka
14753e7c7634531302271270c8cf418abc959d621cbcMichael Jurka    /*
14766639687cd67bab1aeef2a75e5c6bc458b20dc082Adam Cohen    *
14776639687cd67bab1aeef2a75e5c6bc458b20dc082Adam Cohen    * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we
14786639687cd67bab1aeef2a75e5c6bc458b20dc082Adam Cohen    * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace
14796639687cd67bab1aeef2a75e5c6bc458b20dc082Adam Cohen    *
14806639687cd67bab1aeef2a75e5c6bc458b20dc082Adam Cohen    * These methods mark the appropriate pages as accepting drops (which alters their visual
14816639687cd67bab1aeef2a75e5c6bc458b20dc082Adam Cohen    * appearance).
14826639687cd67bab1aeef2a75e5c6bc458b20dc082Adam Cohen    *
14836639687cd67bab1aeef2a75e5c6bc458b20dc082Adam Cohen    */
14846639687cd67bab1aeef2a75e5c6bc458b20dc082Adam Cohen    public void onDragStartedWithItem(View v) {
14856639687cd67bab1aeef2a75e5c6bc458b20dc082Adam Cohen        final Canvas canvas = new Canvas();
14866639687cd67bab1aeef2a75e5c6bc458b20dc082Adam Cohen
14876639687cd67bab1aeef2a75e5c6bc458b20dc082Adam Cohen        // We need to add extra padding to the bitmap to make room for the glow effect
14886639687cd67bab1aeef2a75e5c6bc458b20dc082Adam Cohen        final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS;
14896639687cd67bab1aeef2a75e5c6bc458b20dc082Adam Cohen
14906639687cd67bab1aeef2a75e5c6bc458b20dc082Adam Cohen        // The outline is used to visualize where the item will land if dropped
14916639687cd67bab1aeef2a75e5c6bc458b20dc082Adam Cohen        mDragOutline = createDragOutline(v, canvas, bitmapPadding);
14926639687cd67bab1aeef2a75e5c6bc458b20dc082Adam Cohen    }
14936639687cd67bab1aeef2a75e5c6bc458b20dc082Adam Cohen
1494038f9d8bfb53288e7cf5812f62ec3d5b25fec965Michael Jurka    public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, Paint alphaClipPaint) {
1495d3ef3065ab0941567c45e9aec98783138b623c68Michael Jurka        final Canvas canvas = new Canvas();
14963e7c7634531302271270c8cf418abc959d621cbcMichael Jurka
1497d3ef3065ab0941567c45e9aec98783138b623c68Michael Jurka        // We need to add extra padding to the bitmap to make room for the glow effect
149838b4f7c5eab773ad36048b5ab8713750dcaaf748Michael Jurka        final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS;
1499d3ef3065ab0941567c45e9aec98783138b623c68Michael Jurka
1500038f9d8bfb53288e7cf5812f62ec3d5b25fec965Michael Jurka        int[] size = estimateItemSize(info.spanX, info.spanY, info, false);
15016639687cd67bab1aeef2a75e5c6bc458b20dc082Adam Cohen
1502d3ef3065ab0941567c45e9aec98783138b623c68Michael Jurka        // The outline is used to visualize where the item will land if dropped
15038db7000140d3c35be92a4e07cf54ea6ec4ae3030Peter Ng        mDragOutline = createDragOutline(b, canvas, bitmapPadding, size[0], size[1], alphaClipPaint);
15043e7c7634531302271270c8cf418abc959d621cbcMichael Jurka    }
15053e7c7634531302271270c8cf418abc959d621cbcMichael Jurka
15063e7c7634531302271270c8cf418abc959d621cbcMichael Jurka    // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was
15073e7c7634531302271270c8cf418abc959d621cbcMichael Jurka    // never dragged over
15087bccb42f88cbbaf8cf180a876e8c5d5e306ce62aPatrick Dubroy    public void onDragStopped(boolean success) {
15097bccb42f88cbbaf8cf180a876e8c5d5e306ce62aPatrick Dubroy        // In the success case, DragController has already called onDragExit()
15107bccb42f88cbbaf8cf180a876e8c5d5e306ce62aPatrick Dubroy        if (!success) {
1511c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen            doDragExit(null);
15127bccb42f88cbbaf8cf180a876e8c5d5e306ce62aPatrick Dubroy        }
15133e7c7634531302271270c8cf418abc959d621cbcMichael Jurka    }
15143e7c7634531302271270c8cf418abc959d621cbcMichael Jurka
1515758a9239f045ff4eb85c421a2f67a720b5b3c621Patrick Dubroy    public void exitWidgetResizeMode() {
1516716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohen        DragLayer dragLayer = mLauncher.getDragLayer();
15176788269814a678af976dfc7d6135993e172ce586Adam Cohen        dragLayer.clearAllResizeFrames();
1518758a9239f045ff4eb85c421a2f67a720b5b3c621Patrick Dubroy    }
1519758a9239f045ff4eb85c421a2f67a720b5b3c621Patrick Dubroy
15204b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen    private void initAnimationArrays() {
15214b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen        final int childCount = getChildCount();
15224b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen        if (mOldTranslationXs != null) return;
15234b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen        mOldTranslationXs = new float[childCount];
15244b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen        mOldTranslationYs = new float[childCount];
15254b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen        mOldScaleXs = new float[childCount];
15264b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen        mOldScaleYs = new float[childCount];
15274b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen        mOldBackgroundAlphas = new float[childCount];
15284b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen        mOldBackgroundAlphaMultipliers = new float[childCount];
15294b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen        mOldAlphas = new float[childCount];
15304b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen        mOldRotationYs = new float[childCount];
15314b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen        mNewTranslationXs = new float[childCount];
15324b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen        mNewTranslationYs = new float[childCount];
15334b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen        mNewScaleXs = new float[childCount];
15344b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen        mNewScaleYs = new float[childCount];
15354b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen        mNewBackgroundAlphas = new float[childCount];
15364b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen        mNewBackgroundAlphaMultipliers = new float[childCount];
15374b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen        mNewAlphas = new float[childCount];
15384b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen        mNewRotationYs = new float[childCount];
15394b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen    }
15404b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen
15412a4b1a809c6bc0af9ae3ad974fe50e2a91569543Michael Jurka    Animator getChangeStateAnimation(final State state, boolean animated) {
15422a4b1a809c6bc0af9ae3ad974fe50e2a91569543Michael Jurka        return getChangeStateAnimation(state, animated, 0);
15437777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen    }
15447777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen
15452a4b1a809c6bc0af9ae3ad974fe50e2a91569543Michael Jurka    Animator getChangeStateAnimation(final State state, boolean animated, int delay) {
1546bdf78559f223ac11e01e3311edd5a48a80383e1eMichael Jurka        if (mState == state) {
15472a4b1a809c6bc0af9ae3ad974fe50e2a91569543Michael Jurka            return null;
154899633da90012dc732cbc12a96b33e17abcecb464Michael Jurka        }
154999633da90012dc732cbc12a96b33e17abcecb464Michael Jurka
15501b7c1d351585cc2ce1c45bce85c9a26a9394753eWinson Chung        // Initialize animation arrays for the first time if necessary
15511b7c1d351585cc2ce1c45bce85c9a26a9394753eWinson Chung        initAnimationArrays();
15521b7c1d351585cc2ce1c45bce85c9a26a9394753eWinson Chung
15532a4b1a809c6bc0af9ae3ad974fe50e2a91569543Michael Jurka        AnimatorSet anim = animated ? new AnimatorSet() : null;
15547777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen
15557777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen        // Stop any scrolling, move to the current page right away
15567777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen        setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage);
15577777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen
15581b7c1d351585cc2ce1c45bce85c9a26a9394753eWinson Chung        final State oldState = mState;
15591b7c1d351585cc2ce1c45bce85c9a26a9394753eWinson Chung        final boolean oldStateIsNormal = (oldState == State.NORMAL);
15601b7c1d351585cc2ce1c45bce85c9a26a9394753eWinson Chung        final boolean oldStateIsSmall = (oldState == State.SMALL);
15617777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen        mState = state;
15621b7c1d351585cc2ce1c45bce85c9a26a9394753eWinson Chung        final boolean stateIsNormal = (state == State.NORMAL);
15631b7c1d351585cc2ce1c45bce85c9a26a9394753eWinson Chung        final boolean stateIsSpringLoaded = (state == State.SPRING_LOADED);
15641b7c1d351585cc2ce1c45bce85c9a26a9394753eWinson Chung        final boolean stateIsSmall = (state == State.SMALL);
15651b7c1d351585cc2ce1c45bce85c9a26a9394753eWinson Chung        float finalScaleFactor = 1.0f;
15661b7c1d351585cc2ce1c45bce85c9a26a9394753eWinson Chung        float finalBackgroundAlpha = stateIsSpringLoaded ? 1.0f : 0f;
15671b7c1d351585cc2ce1c45bce85c9a26a9394753eWinson Chung        float translationX = 0;
15681b7c1d351585cc2ce1c45bce85c9a26a9394753eWinson Chung        float translationY = 0;
15697777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen        boolean zoomIn = true;
1570beff8c6a13d5b5ad69f5a85ee0150cecd28e6341Adam Cohen
15717777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen        if (state != State.NORMAL) {
15721b7c1d351585cc2ce1c45bce85c9a26a9394753eWinson Chung            finalScaleFactor = mSpringLoadedShrinkFactor - (stateIsSmall ? 0.1f : 0);
15731b7c1d351585cc2ce1c45bce85c9a26a9394753eWinson Chung            if (oldStateIsNormal && stateIsSmall) {
15747777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen                zoomIn = false;
15757777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen                setLayoutScale(finalScaleFactor);
15767777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen                updateChildrenLayersEnabled();
1577d3ef3065ab0941567c45e9aec98783138b623c68Michael Jurka            } else {
1578cff6af81d721415785bddc2efd74e179d2def9daAdam Cohen                finalBackgroundAlpha = 1.0f;
15797777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen                setLayoutScale(finalScaleFactor);
15803c4c20fbe682cb4b3ef94f09afe0af09171583f3Michael Jurka            }
15817777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen        } else {
15827777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen            setLayoutScale(1.0f);
15837777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen        }
15846b879f0a5885274a85333531e091283405d490ccAdam Lesinski
15857777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen        final int duration = zoomIn ?
15867777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen                getResources().getInteger(R.integer.config_workspaceUnshrinkTime) :
15877777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen                getResources().getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime);
15881b7c1d351585cc2ce1c45bce85c9a26a9394753eWinson Chung        for (int i = 0; i < getChildCount(); i++) {
15891b7c1d351585cc2ce1c45bce85c9a26a9394753eWinson Chung            final CellLayout cl = (CellLayout) getChildAt(i);
15907777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen            float rotation = 0f;
15911b7c1d351585cc2ce1c45bce85c9a26a9394753eWinson Chung            float initialAlpha = cl.getAlpha();
15921b7c1d351585cc2ce1c45bce85c9a26a9394753eWinson Chung            float finalAlphaMultiplierValue = 1f;
15931b7c1d351585cc2ce1c45bce85c9a26a9394753eWinson Chung            float finalAlpha = (!mFadeInAdjacentScreens || stateIsSpringLoaded ||
15941b7c1d351585cc2ce1c45bce85c9a26a9394753eWinson Chung                    (i == mCurrentPage)) ? 1f : 0f;
15951b7c1d351585cc2ce1c45bce85c9a26a9394753eWinson Chung
15961b7c1d351585cc2ce1c45bce85c9a26a9394753eWinson Chung            // Determine the pages alpha during the state transition
15971b7c1d351585cc2ce1c45bce85c9a26a9394753eWinson Chung            if ((oldStateIsSmall && stateIsNormal) ||
15981b7c1d351585cc2ce1c45bce85c9a26a9394753eWinson Chung                (oldStateIsNormal && stateIsSmall)) {
15991b7c1d351585cc2ce1c45bce85c9a26a9394753eWinson Chung                // To/from workspace - only show the current page unless the transition is not
16001b7c1d351585cc2ce1c45bce85c9a26a9394753eWinson Chung                //                     animated and the animation end callback below doesn't run
16011b7c1d351585cc2ce1c45bce85c9a26a9394753eWinson Chung                if (i == mCurrentPage || !animated) {
16021b7c1d351585cc2ce1c45bce85c9a26a9394753eWinson Chung                    finalAlpha = 1f;
16031b7c1d351585cc2ce1c45bce85c9a26a9394753eWinson Chung                    finalAlphaMultiplierValue = 0f;
16041b7c1d351585cc2ce1c45bce85c9a26a9394753eWinson Chung                } else {
16051b7c1d351585cc2ce1c45bce85c9a26a9394753eWinson Chung                    initialAlpha = 0f;
16061b7c1d351585cc2ce1c45bce85c9a26a9394753eWinson Chung                    finalAlpha = 0f;
16071b7c1d351585cc2ce1c45bce85c9a26a9394753eWinson Chung                }
16087777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen            }
16094afe9b31f51022538b30646fe83780e83bf22490Winson Chung
16101b7c1d351585cc2ce1c45bce85c9a26a9394753eWinson Chung            // Update the rotation of the screen (don't apply rotation on Phone UI)
16117777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen            if (LauncherApplication.isScreenLarge()) {
16127777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen                if (i < mCurrentPage) {
16137777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen                    rotation = WORKSPACE_ROTATION;
16147777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen                } else if (i > mCurrentPage) {
16157777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen                    rotation = -WORKSPACE_ROTATION;
1616785d2eb2b8d7072c8124300dd9168ff51a91cf38Winson Chung                }
16177777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen            }
1618f34bab59fc0260f926aec44d044883dce1b4191fAdam Cohen
16197777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen            // If the screen is not xlarge, then don't rotate the CellLayouts
16207777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen            // NOTE: If we don't update the side pages alpha, then we should not hide the side
16217777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen            //       pages. see unshrink().
16227777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen            if (LauncherApplication.isScreenLarge()) {
16237777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen                translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight());
16247777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen            }
162563257c110a4ee54d5e8872c471cce254cf613c7aWinson Chung
16261b7c1d351585cc2ce1c45bce85c9a26a9394753eWinson Chung            mOldAlphas[i] = initialAlpha;
16271b7c1d351585cc2ce1c45bce85c9a26a9394753eWinson Chung            mNewAlphas[i] = finalAlpha;
16287777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen            if (animated) {
16297777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen                mOldTranslationXs[i] = cl.getTranslationX();
16307777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen                mOldTranslationYs[i] = cl.getTranslationY();
16317777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen                mOldScaleXs[i] = cl.getScaleX();
16327777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen                mOldScaleYs[i] = cl.getScaleY();
16337777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen                mOldBackgroundAlphas[i] = cl.getBackgroundAlpha();
16347777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen                mOldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier();
16357777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen                mOldRotationYs[i] = cl.getRotationY();
1636cbbaf9862aa160c5e397cb49b554de20981a35feAdam Cohen
16377777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen                mNewTranslationXs[i] = translationX;
16387777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen                mNewTranslationYs[i] = translationY;
16397777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen                mNewScaleXs[i] = finalScaleFactor;
16407777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen                mNewScaleYs[i] = finalScaleFactor;
16417777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen                mNewBackgroundAlphas[i] = finalBackgroundAlpha;
16427777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen                mNewBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue;
16437777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen                mNewRotationYs[i] = rotation;
16447777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen            } else {
16457777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen                cl.setTranslationX(translationX);
16467777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen                cl.setTranslationY(translationY);
16477777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen                cl.setScaleX(finalScaleFactor);
16487777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen                cl.setScaleY(finalScaleFactor);
16491b7c1d351585cc2ce1c45bce85c9a26a9394753eWinson Chung                cl.setBackgroundAlpha(finalBackgroundAlpha);
16507777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen                cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue);
16511b7c1d351585cc2ce1c45bce85c9a26a9394753eWinson Chung                cl.setAlpha(finalAlpha);
16527777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen                cl.setRotationY(rotation);
1653b0f28bd9a52fa4e343c8299d1c3e225d8e01c1e9Michael Jurka            }
16547777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen        }
16551c4cf4a11f3f7f24bbf65f958fdd22295d0bbd55Winson Chung
16567777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen        if (animated) {
16577407d2a16ed6cf22494122cf683bf13de6fa3695Michael Jurka            for (int index = 0; index < getChildCount(); index++) {
16587407d2a16ed6cf22494122cf683bf13de6fa3695Michael Jurka                final int i = index;
16597407d2a16ed6cf22494122cf683bf13de6fa3695Michael Jurka                final CellLayout cl = (CellLayout) getChildAt(i);
16602a4b1a809c6bc0af9ae3ad974fe50e2a91569543Michael Jurka                if (mOldAlphas[i] == 0 && mNewAlphas[i] == 0) {
16617372c59277a23a31eeb1513a554b29d7bf05aedbMichael Jurka                    cl.setTranslationX(mNewTranslationXs[i]);
16627372c59277a23a31eeb1513a554b29d7bf05aedbMichael Jurka                    cl.setTranslationY(mNewTranslationYs[i]);
16637372c59277a23a31eeb1513a554b29d7bf05aedbMichael Jurka                    cl.setScaleX(mNewScaleXs[i]);
16647372c59277a23a31eeb1513a554b29d7bf05aedbMichael Jurka                    cl.setScaleY(mNewScaleYs[i]);
16657372c59277a23a31eeb1513a554b29d7bf05aedbMichael Jurka                    cl.setBackgroundAlpha(mNewBackgroundAlphas[i]);
16662a4b1a809c6bc0af9ae3ad974fe50e2a91569543Michael Jurka                    cl.setBackgroundAlphaMultiplier(mNewBackgroundAlphaMultipliers[i]);
16677372c59277a23a31eeb1513a554b29d7bf05aedbMichael Jurka                    cl.setAlpha(mNewAlphas[i]);
16687372c59277a23a31eeb1513a554b29d7bf05aedbMichael Jurka                    cl.setRotationY(mNewRotationYs[i]);
16697407d2a16ed6cf22494122cf683bf13de6fa3695Michael Jurka                } else {
16707407d2a16ed6cf22494122cf683bf13de6fa3695Michael Jurka                    LauncherViewPropertyAnimator a = new LauncherViewPropertyAnimator(cl);
16717407d2a16ed6cf22494122cf683bf13de6fa3695Michael Jurka                    a.translationX(mNewTranslationXs[i])
16727407d2a16ed6cf22494122cf683bf13de6fa3695Michael Jurka                        .translationY(mNewTranslationYs[i])
16737407d2a16ed6cf22494122cf683bf13de6fa3695Michael Jurka                        .scaleX(mNewScaleXs[i])
16747407d2a16ed6cf22494122cf683bf13de6fa3695Michael Jurka                        .scaleY(mNewScaleYs[i])
16757407d2a16ed6cf22494122cf683bf13de6fa3695Michael Jurka                        .setDuration(duration)
16767407d2a16ed6cf22494122cf683bf13de6fa3695Michael Jurka                        .setInterpolator(mZoomInInterpolator);
16777407d2a16ed6cf22494122cf683bf13de6fa3695Michael Jurka                    if (mOldAlphas[i] != mNewAlphas[i]) {
16787407d2a16ed6cf22494122cf683bf13de6fa3695Michael Jurka                        a.alpha(mNewAlphas[i]);
1679742574b15b2b5298a2328443176f2890fb8ebe98Michael Jurka                    }
16807407d2a16ed6cf22494122cf683bf13de6fa3695Michael Jurka                    anim.play(a);
16817407d2a16ed6cf22494122cf683bf13de6fa3695Michael Jurka                    if (mOldRotationYs[i] != 0 || mNewRotationYs[i] != 0) {
16827407d2a16ed6cf22494122cf683bf13de6fa3695Michael Jurka                        ValueAnimator rotate = ValueAnimator.ofFloat(0f, 1f).setDuration(duration);
16837407d2a16ed6cf22494122cf683bf13de6fa3695Michael Jurka                        rotate.setInterpolator(new DecelerateInterpolator(2.0f));
16847407d2a16ed6cf22494122cf683bf13de6fa3695Michael Jurka                        rotate.addUpdateListener(new LauncherAnimatorUpdateListener() {
16857407d2a16ed6cf22494122cf683bf13de6fa3695Michael Jurka                                public void onAnimationUpdate(float a, float b) {
1686b33e05fa50a0a386e96acf8dc9b5ccd1ba6834aeWinson Chung                                    cl.setRotationY(a * mOldRotationYs[i] + b * mNewRotationYs[i]);
16877407d2a16ed6cf22494122cf683bf13de6fa3695Michael Jurka                                }
16887407d2a16ed6cf22494122cf683bf13de6fa3695Michael Jurka                            });
16897407d2a16ed6cf22494122cf683bf13de6fa3695Michael Jurka                        anim.play(rotate);
16907777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen                    }
16917407d2a16ed6cf22494122cf683bf13de6fa3695Michael Jurka                    if (mOldBackgroundAlphas[i] != 0 ||
16927407d2a16ed6cf22494122cf683bf13de6fa3695Michael Jurka                        mNewBackgroundAlphas[i] != 0 ||
16937407d2a16ed6cf22494122cf683bf13de6fa3695Michael Jurka                        mOldBackgroundAlphaMultipliers[i] != 0 ||
16947407d2a16ed6cf22494122cf683bf13de6fa3695Michael Jurka                        mNewBackgroundAlphaMultipliers[i] != 0) {
16957407d2a16ed6cf22494122cf683bf13de6fa3695Michael Jurka                        ValueAnimator bgAnim = ValueAnimator.ofFloat(0f, 1f).setDuration(duration);
16967407d2a16ed6cf22494122cf683bf13de6fa3695Michael Jurka                        bgAnim.setInterpolator(mZoomInInterpolator);
16977407d2a16ed6cf22494122cf683bf13de6fa3695Michael Jurka                        bgAnim.addUpdateListener(new LauncherAnimatorUpdateListener() {
16987407d2a16ed6cf22494122cf683bf13de6fa3695Michael Jurka                                public void onAnimationUpdate(float a, float b) {
16997372c59277a23a31eeb1513a554b29d7bf05aedbMichael Jurka                                    cl.setBackgroundAlpha(
17007407d2a16ed6cf22494122cf683bf13de6fa3695Michael Jurka                                            a * mOldBackgroundAlphas[i] +
17017407d2a16ed6cf22494122cf683bf13de6fa3695Michael Jurka                                            b * mNewBackgroundAlphas[i]);
17027407d2a16ed6cf22494122cf683bf13de6fa3695Michael Jurka                                    cl.setBackgroundAlphaMultiplier(
17037407d2a16ed6cf22494122cf683bf13de6fa3695Michael Jurka                                            a * mOldBackgroundAlphaMultipliers[i] +
17047407d2a16ed6cf22494122cf683bf13de6fa3695Michael Jurka                                            b * mNewBackgroundAlphaMultipliers[i]);
17057407d2a16ed6cf22494122cf683bf13de6fa3695Michael Jurka                                }
17067407d2a16ed6cf22494122cf683bf13de6fa3695Michael Jurka                            });
17077407d2a16ed6cf22494122cf683bf13de6fa3695Michael Jurka                        anim.play(bgAnim);
17087777d967a60ecfd34ad2d94141d598fca4021058Adam Cohen                    }
1709b46a2d130b3d04df830402d579060b63db559ae3Winson Chung                }
17107407d2a16ed6cf22494122cf683bf13de6fa3695Michael Jurka            }
17112a4b1a809c6bc0af9ae3ad974fe50e2a91569543Michael Jurka            anim.setStartDelay(delay);
1712dee0589388ba0f6373912e18bf86243282fb3b9bMichael Jurka        }
17138d006d5e144ae33e509ea42e0b9760ef6c5bc884Winson Chung
17141b7c1d351585cc2ce1c45bce85c9a26a9394753eWinson Chung        if (stateIsSpringLoaded) {
17157bdb25a9894970da74248c9cdc606d0e1ba05c99Michael Jurka            // Right now we're covered by Apps Customize
17167bdb25a9894970da74248c9cdc606d0e1ba05c99Michael Jurka            // Show the background gradient immediately, so the gradient will
17177bdb25a9894970da74248c9cdc606d0e1ba05c99Michael Jurka            // be showing once AppsCustomize disappears
17187bdb25a9894970da74248c9cdc606d0e1ba05c99Michael Jurka            animateBackgroundGradient(getResources().getInteger(
17197bdb25a9894970da74248c9cdc606d0e1ba05c99Michael Jurka                    R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, false);
17207bdb25a9894970da74248c9cdc606d0e1ba05c99Michael Jurka        } else {
17217bdb25a9894970da74248c9cdc606d0e1ba05c99Michael Jurka            // Fade the background gradient away
17227bdb25a9894970da74248c9cdc606d0e1ba05c99Michael Jurka            animateBackgroundGradient(0f, true);
17237bdb25a9894970da74248c9cdc606d0e1ba05c99Michael Jurka        }
17242a4b1a809c6bc0af9ae3ad974fe50e2a91569543Michael Jurka        return anim;
1725dee0589388ba0f6373912e18bf86243282fb3b9bMichael Jurka    }
1726dee0589388ba0f6373912e18bf86243282fb3b9bMichael Jurka
1727bed61d22bdbfcdbe04f92675c7751b83c7a8947cMichael Jurka    @Override
1728bed61d22bdbfcdbe04f92675c7751b83c7a8947cMichael Jurka    public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) {
1729bed61d22bdbfcdbe04f92675c7751b83c7a8947cMichael Jurka        mIsSwitchingState = true;
1730bed61d22bdbfcdbe04f92675c7751b83c7a8947cMichael Jurka    }
1731bed61d22bdbfcdbe04f92675c7751b83c7a8947cMichael Jurka
1732bed61d22bdbfcdbe04f92675c7751b83c7a8947cMichael Jurka    @Override
17337044272f180d34ab29866f6c59ee75376e8a1df5Winson Chung    public void onLauncherTransitionStep(Launcher l, float t) {
17347044272f180d34ab29866f6c59ee75376e8a1df5Winson Chung        mTransitionProgress = t;
17357044272f180d34ab29866f6c59ee75376e8a1df5Winson Chung    }
17367044272f180d34ab29866f6c59ee75376e8a1df5Winson Chung
17377044272f180d34ab29866f6c59ee75376e8a1df5Winson Chung    @Override
1738bed61d22bdbfcdbe04f92675c7751b83c7a8947cMichael Jurka    public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) {
1739bed61d22bdbfcdbe04f92675c7751b83c7a8947cMichael Jurka        mIsSwitchingState = false;
1740bed61d22bdbfcdbe04f92675c7751b83c7a8947cMichael Jurka        mWallpaperOffset.setOverrideHorizontalCatchupConstant(false);
1741bed61d22bdbfcdbe04f92675c7751b83c7a8947cMichael Jurka        updateChildrenLayersEnabled();
1742bed61d22bdbfcdbe04f92675c7751b83c7a8947cMichael Jurka        // The code in getChangeStateAnimation to determine initialAlpha and finalAlpha will ensure
1743bed61d22bdbfcdbe04f92675c7751b83c7a8947cMichael Jurka        // ensure that only the current page is visible during (and subsequently, after) the
1744bed61d22bdbfcdbe04f92675c7751b83c7a8947cMichael Jurka        // transition animation.  If fade adjacent pages is disabled, then re-enable the page
1745bed61d22bdbfcdbe04f92675c7751b83c7a8947cMichael Jurka        // visibility after the transition animation.
1746bed61d22bdbfcdbe04f92675c7751b83c7a8947cMichael Jurka        if (!mFadeInAdjacentScreens) {
1747bed61d22bdbfcdbe04f92675c7751b83c7a8947cMichael Jurka            for (int i = 0; i < getChildCount(); i++) {
1748bed61d22bdbfcdbe04f92675c7751b83c7a8947cMichael Jurka                final CellLayout cl = (CellLayout) getChildAt(i);
1749bed61d22bdbfcdbe04f92675c7751b83c7a8947cMichael Jurka                cl.setAlpha(1f);
1750bed61d22bdbfcdbe04f92675c7751b83c7a8947cMichael Jurka            }
1751bed61d22bdbfcdbe04f92675c7751b83c7a8947cMichael Jurka        }
1752bed61d22bdbfcdbe04f92675c7751b83c7a8947cMichael Jurka    }
1753bed61d22bdbfcdbe04f92675c7751b83c7a8947cMichael Jurka
1754bed61d22bdbfcdbe04f92675c7751b83c7a8947cMichael Jurka    @Override
1755bed61d22bdbfcdbe04f92675c7751b83c7a8947cMichael Jurka    public View getContent() {
1756bed61d22bdbfcdbe04f92675c7751b83c7a8947cMichael Jurka        return this;
1757bed61d22bdbfcdbe04f92675c7751b83c7a8947cMichael Jurka    }
1758bed61d22bdbfcdbe04f92675c7751b83c7a8947cMichael Jurka
17594be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato    /**
17604be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato     * Draw the View v into the given Canvas.
17614be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato     *
17624be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato     * @param v the view to draw
17634be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato     * @param destCanvas the canvas to draw on
17644be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato     * @param padding the horizontal and vertical padding to use when drawing
17654be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato     */
1766ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen    private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) {
17674be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato        final Rect clipRect = mTempRect;
17684be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato        v.getDrawingRect(clipRect);
17694be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato
1770099f60d51f6310e1290687e83958e665b3324504Adam Cohen        boolean textVisible = false;
1771099f60d51f6310e1290687e83958e665b3324504Adam Cohen
1772ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen        destCanvas.save();
1773ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen        if (v instanceof TextView && pruneToDrawable) {
1774ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen            Drawable d = ((TextView) v).getCompoundDrawables()[1];
1775ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen            clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding);
1776ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen            destCanvas.translate(padding / 2, padding / 2);
1777ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen            d.draw(destCanvas);
1778ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen        } else {
1779ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen            if (v instanceof FolderIcon) {
1780099f60d51f6310e1290687e83958e665b3324504Adam Cohen                // For FolderIcons the text can bleed into the icon area, and so we need to
1781099f60d51f6310e1290687e83958e665b3324504Adam Cohen                // hide the text completely (which can't be achieved by clipping).
1782099f60d51f6310e1290687e83958e665b3324504Adam Cohen                if (((FolderIcon) v).getTextVisible()) {
1783099f60d51f6310e1290687e83958e665b3324504Adam Cohen                    ((FolderIcon) v).setTextVisible(false);
1784099f60d51f6310e1290687e83958e665b3324504Adam Cohen                    textVisible = true;
1785099f60d51f6310e1290687e83958e665b3324504Adam Cohen                }
1786ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen            } else if (v instanceof BubbleTextView) {
1787ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen                final BubbleTextView tv = (BubbleTextView) v;
1788ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen                clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V +
1789ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen                        tv.getLayout().getLineTop(0);
1790ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen            } else if (v instanceof TextView) {
1791ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen                final TextView tv = (TextView) v;
1792ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen                clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() +
1793ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen                        tv.getLayout().getLineTop(0);
1794ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen            }
1795ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen            destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2);
1796ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen            destCanvas.clipRect(clipRect, Op.REPLACE);
1797ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen            v.draw(destCanvas);
1798099f60d51f6310e1290687e83958e665b3324504Adam Cohen
1799099f60d51f6310e1290687e83958e665b3324504Adam Cohen            // Restore text visibility of FolderIcon if necessary
1800099f60d51f6310e1290687e83958e665b3324504Adam Cohen            if (textVisible) {
1801099f60d51f6310e1290687e83958e665b3324504Adam Cohen                ((FolderIcon) v).setTextVisible(true);
1802099f60d51f6310e1290687e83958e665b3324504Adam Cohen            }
18034be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato        }
1804ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen        destCanvas.restore();
1805ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen    }
18064be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato
1807ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen    /**
1808ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen     * Returns a new bitmap to show when the given View is being dragged around.
1809ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen     * Responsibility for the bitmap is transferred to the caller.
1810ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen     */
1811ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen    public Bitmap createDragBitmap(View v, Canvas canvas, int padding) {
1812ea359c6aee44c0fe3bb94f7002c3b49208b32b7fWinson Chung        final int outlineColor = getResources().getColor(android.R.color.holo_blue_light);
1813ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen        Bitmap b;
18144be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato
1815ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen        if (v instanceof TextView) {
1816ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen            Drawable d = ((TextView) v).getCompoundDrawables()[1];
1817ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen            b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding,
1818ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen                    d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888);
1819ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen        } else {
1820ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen            b = Bitmap.createBitmap(
1821ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen                    v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888);
1822ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen        }
1823ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen
1824ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen        canvas.setBitmap(b);
1825ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen        drawDragView(v, canvas, padding, true);
1826aaf473c2bb6329b3b09ed2e19de6aae26077050cAdam Cohen        canvas.setBitmap(null);
1827ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen
1828ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen        return b;
18294be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato    }
18304be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato
18314be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato    /**
18324be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato     * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location.
18334be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato     * Responsibility for the bitmap is transferred to the caller.
18344be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato     */
18354be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato    private Bitmap createDragOutline(View v, Canvas canvas, int padding) {
1836ea359c6aee44c0fe3bb94f7002c3b49208b32b7fWinson Chung        final int outlineColor = getResources().getColor(android.R.color.holo_blue_light);
18374be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato        final Bitmap b = Bitmap.createBitmap(
18384be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato                v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888);
18394be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato
18404be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato        canvas.setBitmap(b);
1841b8c69f3c17a40adc2d85e8e996f754c383c293dcWinson Chung        drawDragView(v, canvas, padding, true);
18425bb50bdb13f5fc22f5febd9480e78222b26c6fe7Adam Cohen        mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor);
1843aaf473c2bb6329b3b09ed2e19de6aae26077050cAdam Cohen        canvas.setBitmap(null);
18444be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato        return b;
18454be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato    }
18464be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato
18474be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato    /**
1848d3ef3065ab0941567c45e9aec98783138b623c68Michael Jurka     * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location.
1849d3ef3065ab0941567c45e9aec98783138b623c68Michael Jurka     * Responsibility for the bitmap is transferred to the caller.
1850d3ef3065ab0941567c45e9aec98783138b623c68Michael Jurka     */
18518db7000140d3c35be92a4e07cf54ea6ec4ae3030Peter Ng    private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h,
18528db7000140d3c35be92a4e07cf54ea6ec4ae3030Peter Ng            Paint alphaClipPaint) {
1853ea359c6aee44c0fe3bb94f7002c3b49208b32b7fWinson Chung        final int outlineColor = getResources().getColor(android.R.color.holo_blue_light);
1854f12c75cb48f87955600c56ccbe0aac84b0c11b28Michael Jurka        final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888);
1855d3ef3065ab0941567c45e9aec98783138b623c68Michael Jurka        canvas.setBitmap(b);
1856f12c75cb48f87955600c56ccbe0aac84b0c11b28Michael Jurka
1857f12c75cb48f87955600c56ccbe0aac84b0c11b28Michael Jurka        Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight());
1858f12c75cb48f87955600c56ccbe0aac84b0c11b28Michael Jurka        float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(),
1859f12c75cb48f87955600c56ccbe0aac84b0c11b28Michael Jurka                (h - padding) / (float) orig.getHeight());
1860f12c75cb48f87955600c56ccbe0aac84b0c11b28Michael Jurka        int scaledWidth = (int) (scaleFactor * orig.getWidth());
1861f12c75cb48f87955600c56ccbe0aac84b0c11b28Michael Jurka        int scaledHeight = (int) (scaleFactor * orig.getHeight());
1862f12c75cb48f87955600c56ccbe0aac84b0c11b28Michael Jurka        Rect dst = new Rect(0, 0, scaledWidth, scaledHeight);
1863f12c75cb48f87955600c56ccbe0aac84b0c11b28Michael Jurka
1864f12c75cb48f87955600c56ccbe0aac84b0c11b28Michael Jurka        // center the image
1865f12c75cb48f87955600c56ccbe0aac84b0c11b28Michael Jurka        dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2);
1866f12c75cb48f87955600c56ccbe0aac84b0c11b28Michael Jurka
18671120e0355798391712f1d2e2b205f0bd3724770cWinson Chung        canvas.drawBitmap(orig, src, dst, null);
18688db7000140d3c35be92a4e07cf54ea6ec4ae3030Peter Ng        mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor,
18698db7000140d3c35be92a4e07cf54ea6ec4ae3030Peter Ng                alphaClipPaint);
1870aaf473c2bb6329b3b09ed2e19de6aae26077050cAdam Cohen        canvas.setBitmap(null);
1871d3ef3065ab0941567c45e9aec98783138b623c68Michael Jurka
1872d3ef3065ab0941567c45e9aec98783138b623c68Michael Jurka        return b;
1873d3ef3065ab0941567c45e9aec98783138b623c68Michael Jurka    }
1874d3ef3065ab0941567c45e9aec98783138b623c68Michael Jurka
1875d3ef3065ab0941567c45e9aec98783138b623c68Michael Jurka    /**
1876a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung     * Creates a drag outline to represent a drop (that we don't have the actual information for
1877a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung     * yet).  May be changed in the future to alter the drop outline slightly depending on the
1878a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung     * clip description mime data.
1879a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung     */
1880a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung    private Bitmap createExternalDragOutline(Canvas canvas, int padding) {
1881a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung        Resources r = getResources();
1882ea359c6aee44c0fe3bb94f7002c3b49208b32b7fWinson Chung        final int outlineColor = r.getColor(android.R.color.holo_blue_light);
1883a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung        final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width);
1884a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung        final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height);
1885a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung        final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius);
1886a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung        final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f);
1887a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung        final Bitmap b = Bitmap.createBitmap(
1888a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung                iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888);
1889a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung
1890a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung        canvas.setBitmap(b);
1891a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung        canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset),
1892a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung                rectRadius, rectRadius, mExternalDragOutlinePaint);
18935bb50bdb13f5fc22f5febd9480e78222b26c6fe7Adam Cohen        mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor);
1894aaf473c2bb6329b3b09ed2e19de6aae26077050cAdam Cohen        canvas.setBitmap(null);
1895a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung        return b;
1896a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung    }
1897a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung
189831dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    void startDrag(CellLayout.CellInfo cellInfo) {
189931dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project        View child = cellInfo.cell;
1900aafa03cbb925c74be1c13f8bb99d928be429e62fWinson Chung
190131dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project        // Make sure the drag was started by a long press as opposed to a long click.
19027984c9496bcaeca23ee7fdecc4d4f1bb2467e0f2Bjorn Bringert        if (!child.isInTouchMode()) {
190331dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project            return;
190431dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project        }
1905aafa03cbb925c74be1c13f8bb99d928be429e62fWinson Chung
190631dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project        mDragInfo = cellInfo;
1907fc53cd22c9a78708c78c85946443f23ec8c59502Adam Cohen        child.setVisibility(GONE);
19084be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato
19094be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato        child.clearFocus();
19104be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato        child.setPressed(false);
19114be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato
19124be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato        final Canvas canvas = new Canvas();
19134be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato
19148e58e916061cbe2623697efac0924f2aa3753a92Patrick Dubroy        // We need to add extra padding to the bitmap to make room for the glow effect
191538b4f7c5eab773ad36048b5ab8713750dcaaf748Michael Jurka        final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS;
19168e58e916061cbe2623697efac0924f2aa3753a92Patrick Dubroy
19174be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato        // The outline is used to visualize where the item will land if dropped
19188e58e916061cbe2623697efac0924f2aa3753a92Patrick Dubroy        mDragOutline = createDragOutline(child, canvas, bitmapPadding);
1919ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen        beginDragShared(child, this);
1920ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen    }
1921ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen
1922ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen    public void beginDragShared(View child, DragSource source) {
1923b8c69f3c17a40adc2d85e8e996f754c383c293dcWinson Chung        Resources r = getResources();
1924b8c69f3c17a40adc2d85e8e996f754c383c293dcWinson Chung
1925ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen        // We need to add extra padding to the bitmap to make room for the glow effect
1926ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen        final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS;
19274be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato
19284be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato        // The drag bitmap follows the touch point around on the screen
1929ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen        final Bitmap b = createDragBitmap(child, new Canvas(), bitmapPadding);
19304be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato
19314be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato        final int bmpWidth = b.getWidth();
1932e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen
19338dfcba4af7a7ece09e8c7d96053e54f3a383e905Adam Cohen        mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY);
19348dfcba4af7a7ece09e8c7d96053e54f3a383e905Adam Cohen        final int dragLayerX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2;
1935fc53cd22c9a78708c78c85946443f23ec8c59502Adam Cohen        int dragLayerY = mTempXY[1] - bitmapPadding / 2;
1936e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen
1937b8c69f3c17a40adc2d85e8e996f754c383c293dcWinson Chung        Point dragVisualizeOffset = null;
1938e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen        Rect dragRect = null;
1939b8c69f3c17a40adc2d85e8e996f754c383c293dcWinson Chung        if (child instanceof BubbleTextView || child instanceof PagedViewIcon) {
1940b8c69f3c17a40adc2d85e8e996f754c383c293dcWinson Chung            int iconSize = r.getDimensionPixelSize(R.dimen.app_icon_size);
1941b8c69f3c17a40adc2d85e8e996f754c383c293dcWinson Chung            int iconPaddingTop = r.getDimensionPixelSize(R.dimen.app_icon_padding_top);
1942e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen            int top = child.getPaddingTop();
1943e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen            int left = (bmpWidth - iconSize) / 2;
1944e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen            int right = left + iconSize;
1945e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen            int bottom = top + iconSize;
1946fc53cd22c9a78708c78c85946443f23ec8c59502Adam Cohen            dragLayerY += top;
1947b8c69f3c17a40adc2d85e8e996f754c383c293dcWinson Chung            // Note: The drag region is used to calculate drag layer offsets, but the
1948b8c69f3c17a40adc2d85e8e996f754c383c293dcWinson Chung            // dragVisualizeOffset in addition to the dragRect (the size) to position the outline.
1949b8c69f3c17a40adc2d85e8e996f754c383c293dcWinson Chung            dragVisualizeOffset = new Point(-bitmapPadding / 2, iconPaddingTop - bitmapPadding / 2);
1950e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen            dragRect = new Rect(left, top, right, bottom);
19510e4857c302da6adbd45231d7a8bae0289fa33250Adam Cohen        } else if (child instanceof FolderIcon) {
1952b8c69f3c17a40adc2d85e8e996f754c383c293dcWinson Chung            int previewSize = r.getDimensionPixelSize(R.dimen.folder_preview_size);
19530e4857c302da6adbd45231d7a8bae0289fa33250Adam Cohen            dragRect = new Rect(0, 0, child.getWidth(), previewSize);
1954e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen        }
1955e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen
19561e9cbfef04366a206d59922c14fe4356b7cca426Winson Chung        // Clear the pressed state if necessary
19571e9cbfef04366a206d59922c14fe4356b7cca426Winson Chung        if (child instanceof BubbleTextView) {
19581e9cbfef04366a206d59922c14fe4356b7cca426Winson Chung            BubbleTextView icon = (BubbleTextView) child;
19591e9cbfef04366a206d59922c14fe4356b7cca426Winson Chung            icon.clearPressedOrFocusedBackground();
19601e9cbfef04366a206d59922c14fe4356b7cca426Winson Chung        }
19611e9cbfef04366a206d59922c14fe4356b7cca426Winson Chung
1962ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen        mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(),
196372d598400da7cef9c7fc4f99bb1fcd7ff0710011Winson Chung                DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect, 1f);
19644be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato        b.recycle();
19651afedc379f8271b9bf86a8d887c3c020d5e59214Winson Chung
19661afedc379f8271b9bf86a8d887c3c020d5e59214Winson Chung        // Show the scrolling indicator when you pick up an item
19671afedc379f8271b9bf86a8d887c3c020d5e59214Winson Chung        showScrollingIndicator(false);
196831dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    }
196931dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project
19703d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung    void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, int screen,
19713d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung            int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) {
19723d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung        View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info);
197331dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project
19740280c3be4d9f8fc6fdf015b7ecd276eb26f76f2dMichael Jurka        final int[] cellXY = new int[2];
19753d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung        target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY);
19763d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung        addInScreen(view, container, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst);
19773d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung        LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, cellXY[0],
19783d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                cellXY[1]);
197931dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    }
198031dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project
19814b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen    public boolean transitionStateShouldAllowDrop() {
19821b36dc3f2bb643e3b9600755f1a98522e4efc2edAdam Cohen        return ((!isSwitchingState() || mTransitionProgress > 0.5f) && mState != State.SMALL);
19834b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen    }
19844b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen
1985cd68ff5b88de9b5136ff5a9ef698e4db2fc5db66Patrick Dubroy    /**
1986cd68ff5b88de9b5136ff5a9ef698e4db2fc5db66Patrick Dubroy     * {@inheritDoc}
1987cd68ff5b88de9b5136ff5a9ef698e4db2fc5db66Patrick Dubroy     */
1988cb3382b1bfe1a534b1b44f5c4def9b2db605ac90Adam Cohen    public boolean acceptDrop(DragObject d) {
1989cd68ff5b88de9b5136ff5a9ef698e4db2fc5db66Patrick Dubroy        // If it's an external drop (e.g. from All Apps), check if it should be accepted
1990cb3382b1bfe1a534b1b44f5c4def9b2db605ac90Adam Cohen        if (d.dragSource != this) {
1991cd68ff5b88de9b5136ff5a9ef698e4db2fc5db66Patrick Dubroy            // Don't accept the drop if we're not over a screen at time of drop
1992a65beeea13c18c443f15f8d51c4c6e153a6c4ef9Adam Cohen            if (mDragTargetLayout == null) {
1993cd68ff5b88de9b5136ff5a9ef698e4db2fc5db66Patrick Dubroy                return false;
1994cd68ff5b88de9b5136ff5a9ef698e4db2fc5db66Patrick Dubroy            }
19954b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen            if (!transitionStateShouldAllowDrop()) return false;
1996cd68ff5b88de9b5136ff5a9ef698e4db2fc5db66Patrick Dubroy
1997a65beeea13c18c443f15f8d51c4c6e153a6c4ef9Adam Cohen            mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset,
1998a65beeea13c18c443f15f8d51c4c6e153a6c4ef9Adam Cohen                    d.dragView, mDragViewVisualCenter);
1999a65beeea13c18c443f15f8d51c4c6e153a6c4ef9Adam Cohen
20002e9f4fb38e833b18fe403da17b00f830d6a5e86cAdam Cohen            // We want the point to be mapped to the dragTarget.
20012e9f4fb38e833b18fe403da17b00f830d6a5e86cAdam Cohen            if (mLauncher.isHotseatLayout(mDragTargetLayout)) {
20022e9f4fb38e833b18fe403da17b00f830d6a5e86cAdam Cohen                mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter);
20032e9f4fb38e833b18fe403da17b00f830d6a5e86cAdam Cohen            } else {
20042e9f4fb38e833b18fe403da17b00f830d6a5e86cAdam Cohen                mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null);
20052e9f4fb38e833b18fe403da17b00f830d6a5e86cAdam Cohen            }
20062e9f4fb38e833b18fe403da17b00f830d6a5e86cAdam Cohen
2007557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung            int spanX = 1;
2008557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung            int spanY = 1;
2009557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung            View ignoreView = null;
2010557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung            if (mDragInfo != null) {
2011557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung                final CellLayout.CellInfo dragCellInfo = mDragInfo;
2012557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung                spanX = dragCellInfo.spanX;
2013557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung                spanY = dragCellInfo.spanY;
2014557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung                ignoreView = dragCellInfo.cell;
2015557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung            } else {
2016557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung                final ItemInfo dragInfo = (ItemInfo) d.dragInfo;
2017557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung                spanX = dragInfo.spanX;
2018557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung                spanY = dragInfo.spanY;
2019557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung            }
2020cd68ff5b88de9b5136ff5a9ef698e4db2fc5db66Patrick Dubroy
2021a65beeea13c18c443f15f8d51c4c6e153a6c4ef9Adam Cohen            mTargetCell = findNearestArea((int) mDragViewVisualCenter[0],
2022a65beeea13c18c443f15f8d51c4c6e153a6c4ef9Adam Cohen                    (int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell);
2023a65beeea13c18c443f15f8d51c4c6e153a6c4ef9Adam Cohen            if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, true)) {
2024a65beeea13c18c443f15f8d51c4c6e153a6c4ef9Adam Cohen                return true;
2025a65beeea13c18c443f15f8d51c4c6e153a6c4ef9Adam Cohen            }
2026a65beeea13c18c443f15f8d51c4c6e153a6c4ef9Adam Cohen            if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout,
2027a65beeea13c18c443f15f8d51c4c6e153a6c4ef9Adam Cohen                    mTargetCell)) {
2028a65beeea13c18c443f15f8d51c4c6e153a6c4ef9Adam Cohen                return true;
2029a65beeea13c18c443f15f8d51c4c6e153a6c4ef9Adam Cohen            }
2030a65beeea13c18c443f15f8d51c4c6e153a6c4ef9Adam Cohen
2031cd68ff5b88de9b5136ff5a9ef698e4db2fc5db66Patrick Dubroy            // Don't accept the drop if there's no room for the item
2032cd68ff5b88de9b5136ff5a9ef698e4db2fc5db66Patrick Dubroy            if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) {
203396ef409ebdc798a82786e5dcecfd7d897be0ed30Winson Chung                // Don't show the message if we are dropping on the AllApps button and the hotseat
203496ef409ebdc798a82786e5dcecfd7d897be0ed30Winson Chung                // is full
203596ef409ebdc798a82786e5dcecfd7d897be0ed30Winson Chung                if (mTargetCell != null && mLauncher.isHotseatLayout(mDragTargetLayout)) {
203696ef409ebdc798a82786e5dcecfd7d897be0ed30Winson Chung                    Hotseat hotseat = mLauncher.getHotseat();
203796ef409ebdc798a82786e5dcecfd7d897be0ed30Winson Chung                    if (Hotseat.isAllAppsButtonRank(
203896ef409ebdc798a82786e5dcecfd7d897be0ed30Winson Chung                            hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) {
203996ef409ebdc798a82786e5dcecfd7d897be0ed30Winson Chung                        return false;
204096ef409ebdc798a82786e5dcecfd7d897be0ed30Winson Chung                    }
204196ef409ebdc798a82786e5dcecfd7d897be0ed30Winson Chung                }
204296ef409ebdc798a82786e5dcecfd7d897be0ed30Winson Chung
2043cd68ff5b88de9b5136ff5a9ef698e4db2fc5db66Patrick Dubroy                mLauncher.showOutOfSpaceMessage();
2044cd68ff5b88de9b5136ff5a9ef698e4db2fc5db66Patrick Dubroy                return false;
2045cd68ff5b88de9b5136ff5a9ef698e4db2fc5db66Patrick Dubroy            }
2046cd68ff5b88de9b5136ff5a9ef698e4db2fc5db66Patrick Dubroy        }
2047cd68ff5b88de9b5136ff5a9ef698e4db2fc5db66Patrick Dubroy        return true;
2048cd68ff5b88de9b5136ff5a9ef698e4db2fc5db66Patrick Dubroy    }
2049cd68ff5b88de9b5136ff5a9ef698e4db2fc5db66Patrick Dubroy
2050a65beeea13c18c443f15f8d51c4c6e153a6c4ef9Adam Cohen    boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell,
2051a65beeea13c18c443f15f8d51c4c6e153a6c4ef9Adam Cohen            boolean considerTimeout) {
2052a65beeea13c18c443f15f8d51c4c6e153a6c4ef9Adam Cohen        View dropOverView = target.getChildAt(targetCell[0], targetCell[1]);
2053a65beeea13c18c443f15f8d51c4c6e153a6c4ef9Adam Cohen
20543d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung        boolean hasntMoved = false;
20553d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung        if (mDragInfo != null) {
20563d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung            CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell);
20573d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung            hasntMoved = (mDragInfo.cellX == targetCell[0] &&
20583d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                    mDragInfo.cellY == targetCell[1]) && (cellParent == target);
20593d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung        }
2060e0310965022e7a1adb7ad489505d404186608689Adam Cohen
2061a65beeea13c18c443f15f8d51c4c6e153a6c4ef9Adam Cohen        if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) {
2062a65beeea13c18c443f15f8d51c4c6e153a6c4ef9Adam Cohen            return false;
2063a65beeea13c18c443f15f8d51c4c6e153a6c4ef9Adam Cohen        }
2064e0310965022e7a1adb7ad489505d404186608689Adam Cohen
2065a65beeea13c18c443f15f8d51c4c6e153a6c4ef9Adam Cohen        boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo);
2066e0310965022e7a1adb7ad489505d404186608689Adam Cohen        boolean willBecomeShortcut =
2067c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen                (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION ||
2068c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen                info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT);
2069e0310965022e7a1adb7ad489505d404186608689Adam Cohen
2070e0310965022e7a1adb7ad489505d404186608689Adam Cohen        return (aboveShortcut && willBecomeShortcut);
2071e0310965022e7a1adb7ad489505d404186608689Adam Cohen    }
2072e0310965022e7a1adb7ad489505d404186608689Adam Cohen
2073a65beeea13c18c443f15f8d51c4c6e153a6c4ef9Adam Cohen    boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell) {
2074a65beeea13c18c443f15f8d51c4c6e153a6c4ef9Adam Cohen        View dropOverView = target.getChildAt(targetCell[0], targetCell[1]);
2075a65beeea13c18c443f15f8d51c4c6e153a6c4ef9Adam Cohen        if (dropOverView instanceof FolderIcon) {
2076a65beeea13c18c443f15f8d51c4c6e153a6c4ef9Adam Cohen            FolderIcon fi = (FolderIcon) dropOverView;
2077a65beeea13c18c443f15f8d51c4c6e153a6c4ef9Adam Cohen            if (fi.acceptDrop(dragInfo)) {
2078a65beeea13c18c443f15f8d51c4c6e153a6c4ef9Adam Cohen                return true;
2079a65beeea13c18c443f15f8d51c4c6e153a6c4ef9Adam Cohen            }
2080a65beeea13c18c443f15f8d51c4c6e153a6c4ef9Adam Cohen        }
2081a65beeea13c18c443f15f8d51c4c6e153a6c4ef9Adam Cohen        return false;
2082a65beeea13c18c443f15f8d51c4c6e153a6c4ef9Adam Cohen    }
2083a65beeea13c18c443f15f8d51c4c6e153a6c4ef9Adam Cohen
20843d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung    boolean createUserFolderIfNecessary(View newView, long container, CellLayout target,
2085557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung            int[] targetCell, boolean external, DragView dragView, Runnable postAnimationRunnable) {
2086c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen        View v = target.getChildAt(targetCell[0], targetCell[1]);
2087ec9a0a4ca5458e65ba2498e4f7eab0ae6e91964aWinson Chung        boolean hasntMoved = false;
2088ec9a0a4ca5458e65ba2498e4f7eab0ae6e91964aWinson Chung        if (mDragInfo != null) {
2089ec9a0a4ca5458e65ba2498e4f7eab0ae6e91964aWinson Chung            CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell);
2090ec9a0a4ca5458e65ba2498e4f7eab0ae6e91964aWinson Chung            hasntMoved = (mDragInfo.cellX == targetCell[0] &&
2091ec9a0a4ca5458e65ba2498e4f7eab0ae6e91964aWinson Chung                    mDragInfo.cellY == targetCell[1]) && (cellParent == target);
2092ec9a0a4ca5458e65ba2498e4f7eab0ae6e91964aWinson Chung        }
209310b1737910ea7890ca95bbbe5363fd5aa513b856Adam Cohen
209419072da7441e07d5e90026d9e9e1b38f11245e44Adam Cohen        if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false;
209519072da7441e07d5e90026d9e9e1b38f11245e44Adam Cohen        mCreateUserFolderOnDrop = false;
2096c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen        final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target);
209710b1737910ea7890ca95bbbe5363fd5aa513b856Adam Cohen
209810b1737910ea7890ca95bbbe5363fd5aa513b856Adam Cohen        boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo);
209910b1737910ea7890ca95bbbe5363fd5aa513b856Adam Cohen        boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo);
210010b1737910ea7890ca95bbbe5363fd5aa513b856Adam Cohen
210110b1737910ea7890ca95bbbe5363fd5aa513b856Adam Cohen        if (aboveShortcut && willBecomeShortcut) {
210210b1737910ea7890ca95bbbe5363fd5aa513b856Adam Cohen            ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag();
210310b1737910ea7890ca95bbbe5363fd5aa513b856Adam Cohen            ShortcutInfo destInfo = (ShortcutInfo) v.getTag();
210410b1737910ea7890ca95bbbe5363fd5aa513b856Adam Cohen            // if the drag started here, we need to remove it from the workspace
210510b1737910ea7890ca95bbbe5363fd5aa513b856Adam Cohen            if (!external) {
21063d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell);
210710b1737910ea7890ca95bbbe5363fd5aa513b856Adam Cohen            }
210810b1737910ea7890ca95bbbe5363fd5aa513b856Adam Cohen
2109d044526d82e7938cf35b296978d9d5302f98b4afAdam Cohen            Rect folderLocation = new Rect();
2110ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen            float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation);
211110b1737910ea7890ca95bbbe5363fd5aa513b856Adam Cohen            target.removeView(v);
2112d044526d82e7938cf35b296978d9d5302f98b4afAdam Cohen
21133d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung            FolderIcon fi =
21143d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                mLauncher.addFolder(target, container, screen, targetCell[0], targetCell[1]);
2115a9cf38f533d1e86269868f1e6a806ccffd4a78fcAdam Cohen            destInfo.cellX = -1;
2116a9cf38f533d1e86269868f1e6a806ccffd4a78fcAdam Cohen            destInfo.cellY = -1;
2117a9cf38f533d1e86269868f1e6a806ccffd4a78fcAdam Cohen            sourceInfo.cellX = -1;
2118a9cf38f533d1e86269868f1e6a806ccffd4a78fcAdam Cohen            sourceInfo.cellY = -1;
2119d044526d82e7938cf35b296978d9d5302f98b4afAdam Cohen
2120558baaf0a0b1c6a9062a6771088098533a35222bAdam Cohen            // If the dragView is null, we can't animate
2121558baaf0a0b1c6a9062a6771088098533a35222bAdam Cohen            boolean animate = dragView != null;
2122558baaf0a0b1c6a9062a6771088098533a35222bAdam Cohen            if (animate) {
2123558baaf0a0b1c6a9062a6771088098533a35222bAdam Cohen                fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale,
2124558baaf0a0b1c6a9062a6771088098533a35222bAdam Cohen                        postAnimationRunnable);
2125558baaf0a0b1c6a9062a6771088098533a35222bAdam Cohen            } else {
2126558baaf0a0b1c6a9062a6771088098533a35222bAdam Cohen                fi.addItem(destInfo);
2127558baaf0a0b1c6a9062a6771088098533a35222bAdam Cohen                fi.addItem(sourceInfo);
2128558baaf0a0b1c6a9062a6771088098533a35222bAdam Cohen            }
212910b1737910ea7890ca95bbbe5363fd5aa513b856Adam Cohen            return true;
213010b1737910ea7890ca95bbbe5363fd5aa513b856Adam Cohen        }
213110b1737910ea7890ca95bbbe5363fd5aa513b856Adam Cohen        return false;
213210b1737910ea7890ca95bbbe5363fd5aa513b856Adam Cohen    }
213310b1737910ea7890ca95bbbe5363fd5aa513b856Adam Cohen
2134a65beeea13c18c443f15f8d51c4c6e153a6c4ef9Adam Cohen    boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell,
21353e8f811f31a2275e778244427271f77f4116c08bAdam Cohen            DragObject d, boolean external) {
2136a65beeea13c18c443f15f8d51c4c6e153a6c4ef9Adam Cohen        View dropOverView = target.getChildAt(targetCell[0], targetCell[1]);
2137c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen        if (dropOverView instanceof FolderIcon) {
2138c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen            FolderIcon fi = (FolderIcon) dropOverView;
21393e8f811f31a2275e778244427271f77f4116c08bAdam Cohen            if (fi.acceptDrop(d.dragInfo)) {
21403e8f811f31a2275e778244427271f77f4116c08bAdam Cohen                fi.onDrop(d);
2141c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen
2142c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen                // if the drag started here, we need to remove it from the workspace
2143c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen                if (!external) {
21443d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                    getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell);
2145c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen                }
2146c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen                return true;
2147c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen            }
2148c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen        }
2149c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen        return false;
2150c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen    }
2151c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen
2152cb3382b1bfe1a534b1b44f5c4def9b2db605ac90Adam Cohen    public void onDrop(DragObject d) {
2153cb3382b1bfe1a534b1b44f5c4def9b2db605ac90Adam Cohen        mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView,
2154e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen                mDragViewVisualCenter);
2155e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen
2156e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen        // We want the point to be mapped to the dragTarget.
2157ba781611b3e2fb1c42daa7167c1079b90b100efaAdam Cohen        if (mDragTargetLayout != null) {
21583d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung            if (mLauncher.isHotseatLayout(mDragTargetLayout)) {
21593d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter);
21603d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung            } else {
21613d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null);
21623d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung            }
2163ba781611b3e2fb1c42daa7167c1079b90b100efaAdam Cohen        }
2164c6ee42e25f203e408826e7eab4ad8faf67ed2ff9Michael Jurka
216576078c4ef35b6e95fb6d8129a32cf52a36625e28Adam Cohen        CellLayout dropTargetLayout = mDragTargetLayout;
2166b09cac5a738b679038cbeaec80041637100b65d9Michael Jurka
2167ed51cc9a12c50d12e7d30ed209a49f1a40858043Adam Cohen        int snapScreen = -1;
2168cb3382b1bfe1a534b1b44f5c4def9b2db605ac90Adam Cohen        if (d.dragSource != this) {
2169e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen            final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0],
2170e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen                    (int) mDragViewVisualCenter[1] };
21713e8f811f31a2275e778244427271f77f4116c08bAdam Cohen            onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d);
2172ce34a9768b01115def95f000a6a8f35870f10d3aPatrick Dubroy        } else if (mDragInfo != null) {
2173ce34a9768b01115def95f000a6a8f35870f10d3aPatrick Dubroy            final View cell = mDragInfo.cell;
217454fa3b95557c283976e8c1aa8a157b460b0b4513Patrick Dubroy
2175ea359c6aee44c0fe3bb94f7002c3b49208b32b7fWinson Chung            if (dropTargetLayout != null) {
2176cd68ff5b88de9b5136ff5a9ef698e4db2fc5db66Patrick Dubroy                // Move internally
217740e882bf19a837ee62ec328c5748b75be7960d39Winson Chung                boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout);
217840e882bf19a837ee62ec328c5748b75be7960d39Winson Chung                boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout);
217940e882bf19a837ee62ec328c5748b75be7960d39Winson Chung                long container = hasMovedIntoHotseat ?
21803d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                        LauncherSettings.Favorites.CONTAINER_HOTSEAT :
21813d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                        LauncherSettings.Favorites.CONTAINER_DESKTOP;
21823d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                int screen = (mTargetCell[0] < 0) ?
218354fa3b95557c283976e8c1aa8a157b460b0b4513Patrick Dubroy                        mDragInfo.screen : indexOfChild(dropTargetLayout);
2184c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen                int spanX = mDragInfo != null ? mDragInfo.spanX : 1;
2185c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen                int spanY = mDragInfo != null ? mDragInfo.spanY : 1;
2186c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen                // First we find the cell nearest to point at which the item is
2187c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen                // dropped, without any consideration to whether there is an item there.
2188c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen                mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int)
2189c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen                        mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell);
2190c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen                // If the item being dropped is a shortcut and the nearest drop
219176078c4ef35b6e95fb6d8129a32cf52a36625e28Adam Cohen                // cell also contains a shortcut, then create a folder with the two shortcuts.
21921c4cf4a11f3f7f24bbf65f958fdd22295d0bbd55Winson Chung                if (!mInScrollArea && createUserFolderIfNecessary(cell, container,
21933d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                        dropTargetLayout, mTargetCell, false, d.dragView, null)) {
2194c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen                    return;
2195c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen                }
2196c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen
21973e8f811f31a2275e778244427271f77f4116c08bAdam Cohen                if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, d, false)) {
2198df0353815c629fc678824b07a234b89a1ff94208Adam Cohen                    return;
2199df0353815c629fc678824b07a234b89a1ff94208Adam Cohen                }
2200df0353815c629fc678824b07a234b89a1ff94208Adam Cohen
2201df0353815c629fc678824b07a234b89a1ff94208Adam Cohen                // Aside from the special case where we're dropping a shortcut onto a shortcut,
2202df0353815c629fc678824b07a234b89a1ff94208Adam Cohen                // we need to find the nearest cell location that is vacant
2203e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen                mTargetCell = findNearestVacantArea((int) mDragViewVisualCenter[0],
2204e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen                        (int) mDragViewVisualCenter[1], mDragInfo.spanX, mDragInfo.spanY, cell,
2205e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen                        dropTargetLayout, mTargetCell);
2206df0353815c629fc678824b07a234b89a1ff94208Adam Cohen
22077cfc2825c3a1029f962d2fc387ae2eaa85b51798Michael Jurka                if (mCurrentPage != screen && !hasMovedIntoHotseat) {
2208ed51cc9a12c50d12e7d30ed209a49f1a40858043Adam Cohen                    snapScreen = screen;
220954fa3b95557c283976e8c1aa8a157b460b0b4513Patrick Dubroy                    snapToPage(screen);
221054fa3b95557c283976e8c1aa8a157b460b0b4513Patrick Dubroy                }
221154fa3b95557c283976e8c1aa8a157b460b0b4513Patrick Dubroy
2212c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen                if (mTargetCell[0] >= 0 && mTargetCell[1] >= 0) {
221340e882bf19a837ee62ec328c5748b75be7960d39Winson Chung                    if (hasMovedLayouts) {
22149438336724b4f8b54c7cdc49c5f01dd9568926ebPatrick Dubroy                        // Reparent the view
22153d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                        getParentCellLayoutForView(cell).removeView(cell);
22163d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                        addInScreen(cell, container, screen, mTargetCell[0], mTargetCell[1],
22173d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                                mDragInfo.spanX, mDragInfo.spanY);
22189438336724b4f8b54c7cdc49c5f01dd9568926ebPatrick Dubroy                    }
2219cd68ff5b88de9b5136ff5a9ef698e4db2fc5db66Patrick Dubroy
22209438336724b4f8b54c7cdc49c5f01dd9568926ebPatrick Dubroy                    // update the item's position after drop
22219438336724b4f8b54c7cdc49c5f01dd9568926ebPatrick Dubroy                    final ItemInfo info = (ItemInfo) cell.getTag();
22229438336724b4f8b54c7cdc49c5f01dd9568926ebPatrick Dubroy                    CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams();
222354fa3b95557c283976e8c1aa8a157b460b0b4513Patrick Dubroy                    dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]);
22249438336724b4f8b54c7cdc49c5f01dd9568926ebPatrick Dubroy                    lp.cellX = mTargetCell[0];
22259438336724b4f8b54c7cdc49c5f01dd9568926ebPatrick Dubroy                    lp.cellY = mTargetCell[1];
22263d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                    cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screen,
22279438336724b4f8b54c7cdc49c5f01dd9568926ebPatrick Dubroy                            mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY));
22289438336724b4f8b54c7cdc49c5f01dd9568926ebPatrick Dubroy
22293d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                    if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT &&
22303d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                            cell instanceof LauncherAppWidgetHostView) {
2231d4844c3e731b00547a31f23a00f8bd4a271e2b62Adam Cohen                        final CellLayout cellLayout = dropTargetLayout;
2232d4844c3e731b00547a31f23a00f8bd4a271e2b62Adam Cohen                        // We post this call so that the widget has a chance to be placed
2233d4844c3e731b00547a31f23a00f8bd4a271e2b62Adam Cohen                        // in its final location
2234d4844c3e731b00547a31f23a00f8bd4a271e2b62Adam Cohen
2235d4844c3e731b00547a31f23a00f8bd4a271e2b62Adam Cohen                        final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell;
2236d4844c3e731b00547a31f23a00f8bd4a271e2b62Adam Cohen                        AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo();
223727c09b05d3ed2a4ce9d53140216aba998727a569Adam Cohen                        if (pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) {
223826976d9b53161f80faf822d482ac771b8621cf31Adam Cohen                            final Runnable resizeRunnable = new Runnable() {
2239d4844c3e731b00547a31f23a00f8bd4a271e2b62Adam Cohen                                public void run() {
2240716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohen                                    DragLayer dragLayer = mLauncher.getDragLayer();
2241c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen                                    dragLayer.addResizeFrame(info, hostView, cellLayout);
2242d4844c3e731b00547a31f23a00f8bd4a271e2b62Adam Cohen                                }
224326976d9b53161f80faf822d482ac771b8621cf31Adam Cohen                            };
224426976d9b53161f80faf822d482ac771b8621cf31Adam Cohen                            post(new Runnable() {
224526976d9b53161f80faf822d482ac771b8621cf31Adam Cohen                                public void run() {
224626976d9b53161f80faf822d482ac771b8621cf31Adam Cohen                                    if (!isPageMoving()) {
224726976d9b53161f80faf822d482ac771b8621cf31Adam Cohen                                        resizeRunnable.run();
224826976d9b53161f80faf822d482ac771b8621cf31Adam Cohen                                    } else {
224926976d9b53161f80faf822d482ac771b8621cf31Adam Cohen                                        mDelayedResizeRunnable = resizeRunnable;
225026976d9b53161f80faf822d482ac771b8621cf31Adam Cohen                                    }
225126976d9b53161f80faf822d482ac771b8621cf31Adam Cohen                                }
2252d4844c3e731b00547a31f23a00f8bd4a271e2b62Adam Cohen                            });
2253d4844c3e731b00547a31f23a00f8bd4a271e2b62Adam Cohen                        }
2254d4844c3e731b00547a31f23a00f8bd4a271e2b62Adam Cohen                    }
2255d4844c3e731b00547a31f23a00f8bd4a271e2b62Adam Cohen
22563d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                    LauncherModel.moveItemInDatabase(mLauncher, info, container, screen, lp.cellX,
22573d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                            lp.cellY);
22589438336724b4f8b54c7cdc49c5f01dd9568926ebPatrick Dubroy                }
225931dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project            }
2260cd68ff5b88de9b5136ff5a9ef698e4db2fc5db66Patrick Dubroy
22618c920dd3683d752aa4c43e964831ce53f9b72887Michael Jurka            final CellLayout parent = (CellLayout) cell.getParent().getParent();
2262ce34a9768b01115def95f000a6a8f35870f10d3aPatrick Dubroy
2263ce34a9768b01115def95f000a6a8f35870f10d3aPatrick Dubroy            // Prepare it to be animated into its new position
2264ce34a9768b01115def95f000a6a8f35870f10d3aPatrick Dubroy            // This must be called after the view has been re-parented
2265d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka            final Runnable disableHardwareLayersRunnable = new Runnable() {
2266d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka                @Override
2267d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka                public void run() {
2268d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka                    mAnimatingViewIntoPlace = false;
2269d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka                    updateChildrenLayersEnabled();
2270d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka                }
2271d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka            };
2272d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka            mAnimatingViewIntoPlace = true;
2273fc53cd22c9a78708c78c85946443f23ec8c59502Adam Cohen            if (d.dragView.hasDrawn()) {
2274ed51cc9a12c50d12e7d30ed209a49f1a40858043Adam Cohen                int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION;
2275ed51cc9a12c50d12e7d30ed209a49f1a40858043Adam Cohen                mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration,
22766441de0ec2a71862798dd51180d0811b42edd514Adam Cohen                        disableHardwareLayersRunnable, this);
2277fc53cd22c9a78708c78c85946443f23ec8c59502Adam Cohen            } else {
22787bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung                d.deferDragViewCleanupPostAnimation = false;
2279fc53cd22c9a78708c78c85946443f23ec8c59502Adam Cohen                cell.setVisibility(VISIBLE);
2280fc53cd22c9a78708c78c85946443f23ec8c59502Adam Cohen            }
2281716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohen            parent.onDropChild(cell);
228231dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project        }
228331dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    }
228431dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project
2285ed51cc9a12c50d12e7d30ed209a49f1a40858043Adam Cohen    public void setFinalScrollForPageChange(int screen) {
2286ed51cc9a12c50d12e7d30ed209a49f1a40858043Adam Cohen        if (screen >= 0) {
2287ed51cc9a12c50d12e7d30ed209a49f1a40858043Adam Cohen            mSavedScrollX = getScrollX();
2288ed51cc9a12c50d12e7d30ed209a49f1a40858043Adam Cohen            CellLayout cl = (CellLayout) getChildAt(screen);
2289ed51cc9a12c50d12e7d30ed209a49f1a40858043Adam Cohen            mSavedTranslationX = cl.getTranslationX();
2290ed51cc9a12c50d12e7d30ed209a49f1a40858043Adam Cohen            mSavedRotationY = cl.getRotationY();
2291ed51cc9a12c50d12e7d30ed209a49f1a40858043Adam Cohen            final int newX = getChildOffset(screen) - getRelativeChildOffset(screen);
2292ed51cc9a12c50d12e7d30ed209a49f1a40858043Adam Cohen            setScrollX(newX);
2293ed51cc9a12c50d12e7d30ed209a49f1a40858043Adam Cohen            cl.setTranslationX(0f);
2294ed51cc9a12c50d12e7d30ed209a49f1a40858043Adam Cohen            cl.setRotationY(0f);
2295ed51cc9a12c50d12e7d30ed209a49f1a40858043Adam Cohen        }
2296ed51cc9a12c50d12e7d30ed209a49f1a40858043Adam Cohen    }
2297ed51cc9a12c50d12e7d30ed209a49f1a40858043Adam Cohen
2298ed51cc9a12c50d12e7d30ed209a49f1a40858043Adam Cohen    public void resetFinalScrollForPageChange(int screen) {
2299ed51cc9a12c50d12e7d30ed209a49f1a40858043Adam Cohen        if (screen >= 0) {
2300ed51cc9a12c50d12e7d30ed209a49f1a40858043Adam Cohen            CellLayout cl = (CellLayout) getChildAt(screen);
2301ed51cc9a12c50d12e7d30ed209a49f1a40858043Adam Cohen            setScrollX(mSavedScrollX);
2302ed51cc9a12c50d12e7d30ed209a49f1a40858043Adam Cohen            cl.setTranslationX(mSavedTranslationX);
2303ed51cc9a12c50d12e7d30ed209a49f1a40858043Adam Cohen            cl.setRotationY(mSavedRotationY);
2304ed51cc9a12c50d12e7d30ed209a49f1a40858043Adam Cohen        }
2305ed51cc9a12c50d12e7d30ed209a49f1a40858043Adam Cohen    }
2306ed51cc9a12c50d12e7d30ed209a49f1a40858043Adam Cohen
230776078c4ef35b6e95fb6d8129a32cf52a36625e28Adam Cohen    public void getViewLocationRelativeToSelf(View v, int[] location) {
23088dfcba4af7a7ece09e8c7d96053e54f3a383e905Adam Cohen        getLocationInWindow(location);
2309e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen        int x = location[0];
2310e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen        int y = location[1];
2311e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen
23128dfcba4af7a7ece09e8c7d96053e54f3a383e905Adam Cohen        v.getLocationInWindow(location);
2313e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen        int vX = location[0];
2314e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen        int vY = location[1];
2315e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen
2316e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen        location[0] = vX - x;
2317e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen        location[1] = vY - y;
2318e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen    }
2319e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen
2320cb3382b1bfe1a534b1b44f5c4def9b2db605ac90Adam Cohen    public void onDragEnter(DragObject d) {
23218a18afc4aa7217e293e0e96a23ac1cedaabc3738Adam Cohen        mDragHasEnteredWorkspace = true;
2322b26f3d6a8c62e7c1a603b6c7979375d8dd4f20d4Winson Chung        if (mDragTargetLayout != null) {
2323c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung            mDragTargetLayout.setIsDragOverlapping(false);
2324b26f3d6a8c62e7c1a603b6c7979375d8dd4f20d4Winson Chung            mDragTargetLayout.onDragExit();
2325b26f3d6a8c62e7c1a603b6c7979375d8dd4f20d4Winson Chung        }
2326c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung        mDragTargetLayout = getCurrentDropLayout();
2327c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung        mDragTargetLayout.setIsDragOverlapping(true);
2328c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung        mDragTargetLayout.onDragEnter();
2329c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung
2330c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung        // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we
2331c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung        // don't need to show the outlines
2332c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung        if (LauncherApplication.isScreenLarge()) {
2333c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung            showOutlines();
2334c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung        }
2335c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung    }
2336b26f3d6a8c62e7c1a603b6c7979375d8dd4f20d4Winson Chung
2337c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung    private void doDragExit(DragObject d) {
2338c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung        // Clean up folders
2339c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung        cleanupFolderCreation(d);
2340fd3385fe9e0f034b04f99d5d59a58d74fe040da4Winson Chung
2341c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung        // Reset the scroll area and previous drag target
2342c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung        onResetScrollArea();
2343c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung
2344c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung        if (mDragTargetLayout != null) {
2345c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung            mDragTargetLayout.setIsDragOverlapping(false);
2346c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung            mDragTargetLayout.onDragExit();
2347d718d6a7ba424b600052a147e5633a201a04ccb7Michael Jurka        }
2348c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung        mLastDragOverView = null;
234974c28d1a6cf13fdfa55ff9518d2b27be10d01f6eAdam Cohen        mSpringLoadedDragController.cancel();
2350c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung
2351c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung        if (!mIsPageMoving) {
2352c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung            hideOutlines();
2353c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung        }
2354c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung    }
2355c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung
2356c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung    public void onDragExit(DragObject d) {
23578a18afc4aa7217e293e0e96a23ac1cedaabc3738Adam Cohen        mDragHasEnteredWorkspace = false;
2358c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung        doDragExit(d);
235931dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    }
236031dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project
2361cb3382b1bfe1a534b1b44f5c4def9b2db605ac90Adam Cohen    public DropTarget getDropTargetDelegate(DragObject d) {
2362440c360bc395c43683fa9ca226e59f9e35f9e926Patrick Dubroy        return null;
2363440c360bc395c43683fa9ca226e59f9e35f9e926Patrick Dubroy    }
23646569f2c80e179c2f8ed73dae6b01d971ec20f005Patrick Dubroy
2365a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung    /**
2366580e27748137ff08599aa719d106b31215a28353Winson Chung     * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data
2367580e27748137ff08599aa719d106b31215a28353Winson Chung     * in the returned structure related to the widgets that match the drop (or a null list if it is
2368580e27748137ff08599aa719d106b31215a28353Winson Chung     * a shortcut drop).  If the drop is not accepted then a null structure is returned.
2369580e27748137ff08599aa719d106b31215a28353Winson Chung     */
2370580e27748137ff08599aa719d106b31215a28353Winson Chung    private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) {
2371580e27748137ff08599aa719d106b31215a28353Winson Chung        final LauncherModel model = mLauncher.getModel();
2372580e27748137ff08599aa719d106b31215a28353Winson Chung        final ClipDescription desc = event.getClipDescription();
2373580e27748137ff08599aa719d106b31215a28353Winson Chung        final int mimeTypeCount = desc.getMimeTypeCount();
2374580e27748137ff08599aa719d106b31215a28353Winson Chung        for (int i = 0; i < mimeTypeCount; ++i) {
2375580e27748137ff08599aa719d106b31215a28353Winson Chung            final String mimeType = desc.getMimeType(i);
2376580e27748137ff08599aa719d106b31215a28353Winson Chung            if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) {
2377580e27748137ff08599aa719d106b31215a28353Winson Chung                return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null);
2378580e27748137ff08599aa719d106b31215a28353Winson Chung            } else {
2379580e27748137ff08599aa719d106b31215a28353Winson Chung                final List<WidgetMimeTypeHandlerData> widgets =
2380580e27748137ff08599aa719d106b31215a28353Winson Chung                    model.resolveWidgetsForMimeType(mContext, mimeType);
2381580e27748137ff08599aa719d106b31215a28353Winson Chung                if (widgets.size() > 0) {
2382580e27748137ff08599aa719d106b31215a28353Winson Chung                    return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets);
2383580e27748137ff08599aa719d106b31215a28353Winson Chung                }
2384580e27748137ff08599aa719d106b31215a28353Winson Chung            }
2385580e27748137ff08599aa719d106b31215a28353Winson Chung        }
2386580e27748137ff08599aa719d106b31215a28353Winson Chung        return null;
2387580e27748137ff08599aa719d106b31215a28353Winson Chung    }
2388580e27748137ff08599aa719d106b31215a28353Winson Chung
2389580e27748137ff08599aa719d106b31215a28353Winson Chung    /**
2390a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung     * Global drag and drop handler
2391a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung     */
2392a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung    @Override
2393a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung    public boolean onDragEvent(DragEvent event) {
239468846fdce6c01bbe474bd0c8307e1ccaac161cbcWinson Chung        final ClipDescription desc = event.getClipDescription();
2395a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung        final CellLayout layout = (CellLayout) getChildAt(mCurrentPage);
2396a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung        final int[] pos = new int[2];
2397a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung        layout.getLocationOnScreen(pos);
2398a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung        // We need to offset the drag coordinates to layout coordinate space
2399a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung        final int x = (int) event.getX() - pos[0];
2400a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung        final int y = (int) event.getY() - pos[1];
2401a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung
2402a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung        switch (event.getAction()) {
2403580e27748137ff08599aa719d106b31215a28353Winson Chung        case DragEvent.ACTION_DRAG_STARTED: {
2404580e27748137ff08599aa719d106b31215a28353Winson Chung            // Validate this drag
2405580e27748137ff08599aa719d106b31215a28353Winson Chung            Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event);
2406580e27748137ff08599aa719d106b31215a28353Winson Chung            if (test != null) {
2407580e27748137ff08599aa719d106b31215a28353Winson Chung                boolean isShortcut = (test.second == null);
2408580e27748137ff08599aa719d106b31215a28353Winson Chung                if (isShortcut) {
2409580e27748137ff08599aa719d106b31215a28353Winson Chung                    // Check if we have enough space on this screen to add a new shortcut
2410580e27748137ff08599aa719d106b31215a28353Winson Chung                    if (!layout.findCellForSpan(pos, 1, 1)) {
2411557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung                        mLauncher.showOutOfSpaceMessage();
2412580e27748137ff08599aa719d106b31215a28353Winson Chung                        return false;
2413580e27748137ff08599aa719d106b31215a28353Winson Chung                    }
2414580e27748137ff08599aa719d106b31215a28353Winson Chung                }
2415580e27748137ff08599aa719d106b31215a28353Winson Chung            } else {
2416580e27748137ff08599aa719d106b31215a28353Winson Chung                // Show error message if we couldn't accept any of the items
2417580e27748137ff08599aa719d106b31215a28353Winson Chung                Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error),
2418a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung                        Toast.LENGTH_SHORT).show();
2419a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung                return false;
2420a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung            }
2421a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung
242268846fdce6c01bbe474bd0c8307e1ccaac161cbcWinson Chung            // Create the drag outline
242368846fdce6c01bbe474bd0c8307e1ccaac161cbcWinson Chung            // We need to add extra padding to the bitmap to make room for the glow effect
242468846fdce6c01bbe474bd0c8307e1ccaac161cbcWinson Chung            final Canvas canvas = new Canvas();
242538b4f7c5eab773ad36048b5ab8713750dcaaf748Michael Jurka            final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS;
242668846fdce6c01bbe474bd0c8307e1ccaac161cbcWinson Chung            mDragOutline = createExternalDragOutline(canvas, bitmapPadding);
2427a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung
242868846fdce6c01bbe474bd0c8307e1ccaac161cbcWinson Chung            // Show the current page outlines to indicate that we can accept this drop
242968846fdce6c01bbe474bd0c8307e1ccaac161cbcWinson Chung            showOutlines();
243068846fdce6c01bbe474bd0c8307e1ccaac161cbcWinson Chung            layout.onDragEnter();
2431b8c69f3c17a40adc2d85e8e996f754c383c293dcWinson Chung            layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1, null, null);
2432a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung
243368846fdce6c01bbe474bd0c8307e1ccaac161cbcWinson Chung            return true;
2434580e27748137ff08599aa719d106b31215a28353Winson Chung        }
2435a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung        case DragEvent.ACTION_DRAG_LOCATION:
2436a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung            // Visualize the drop location
2437b8c69f3c17a40adc2d85e8e996f754c383c293dcWinson Chung            layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1, null, null);
2438a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung            return true;
2439580e27748137ff08599aa719d106b31215a28353Winson Chung        case DragEvent.ACTION_DROP: {
2440a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung            // Try and add any shortcuts
2441a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung            final LauncherModel model = mLauncher.getModel();
2442a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung            final ClipData data = event.getClipData();
244355cef262f97749300c2f6e764da0b00cbcb78879Winson Chung
244468846fdce6c01bbe474bd0c8307e1ccaac161cbcWinson Chung            // We assume that the mime types are ordered in descending importance of
244568846fdce6c01bbe474bd0c8307e1ccaac161cbcWinson Chung            // representation. So we enumerate the list of mime types and alert the
244668846fdce6c01bbe474bd0c8307e1ccaac161cbcWinson Chung            // user if any widgets can handle the drop.  Only the most preferred
244768846fdce6c01bbe474bd0c8307e1ccaac161cbcWinson Chung            // representation will be handled.
244868846fdce6c01bbe474bd0c8307e1ccaac161cbcWinson Chung            pos[0] = x;
244968846fdce6c01bbe474bd0c8307e1ccaac161cbcWinson Chung            pos[1] = y;
2450580e27748137ff08599aa719d106b31215a28353Winson Chung            Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event);
2451580e27748137ff08599aa719d106b31215a28353Winson Chung            if (test != null) {
2452580e27748137ff08599aa719d106b31215a28353Winson Chung                final int index = test.first;
2453580e27748137ff08599aa719d106b31215a28353Winson Chung                final List<WidgetMimeTypeHandlerData> widgets = test.second;
2454580e27748137ff08599aa719d106b31215a28353Winson Chung                final boolean isShortcut = (widgets == null);
2455580e27748137ff08599aa719d106b31215a28353Winson Chung                final String mimeType = desc.getMimeType(index);
2456580e27748137ff08599aa719d106b31215a28353Winson Chung                if (isShortcut) {
24570d5aad7edbed3ed5c13904cc13ec8842ffe8837bDianne Hackborn                    final Intent intent = data.getItemAt(index).getIntent();
245868846fdce6c01bbe474bd0c8307e1ccaac161cbcWinson Chung                    Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon());
2459d919882006a457d16dea46bd546472e6534b5c19Adam Cohen                    if (info != null) {
2460d919882006a457d16dea46bd546472e6534b5c19Adam Cohen                        onDropExternal(new int[] { x, y }, info, layout, false);
2461d919882006a457d16dea46bd546472e6534b5c19Adam Cohen                    }
246268846fdce6c01bbe474bd0c8307e1ccaac161cbcWinson Chung                } else {
2463580e27748137ff08599aa719d106b31215a28353Winson Chung                    if (widgets.size() == 1) {
246468846fdce6c01bbe474bd0c8307e1ccaac161cbcWinson Chung                        // If there is only one item, then go ahead and add and configure
246568846fdce6c01bbe474bd0c8307e1ccaac161cbcWinson Chung                        // that widget
246668846fdce6c01bbe474bd0c8307e1ccaac161cbcWinson Chung                        final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo;
246768846fdce6c01bbe474bd0c8307e1ccaac161cbcWinson Chung                        final PendingAddWidgetInfo createInfo =
2468c9d95c5897fc5ebbf53903d4ab18ad13d196f643Michael Jurka                                new PendingAddWidgetInfo(widgetInfo, mimeType, data);
24693d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                        mLauncher.addAppWidgetFromDrop(createInfo,
24703d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                            LauncherSettings.Favorites.CONTAINER_DESKTOP, mCurrentPage, null, pos);
2471580e27748137ff08599aa719d106b31215a28353Winson Chung                    } else {
247268846fdce6c01bbe474bd0c8307e1ccaac161cbcWinson Chung                        // Show the widget picker dialog if there is more than one widget
247368846fdce6c01bbe474bd0c8307e1ccaac161cbcWinson Chung                        // that can handle this data type
247468846fdce6c01bbe474bd0c8307e1ccaac161cbcWinson Chung                        final InstallWidgetReceiver.WidgetListAdapter adapter =
247568846fdce6c01bbe474bd0c8307e1ccaac161cbcWinson Chung                            new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType,
247668846fdce6c01bbe474bd0c8307e1ccaac161cbcWinson Chung                                    data, widgets, layout, mCurrentPage, pos);
247768846fdce6c01bbe474bd0c8307e1ccaac161cbcWinson Chung                        final AlertDialog.Builder builder =
247868846fdce6c01bbe474bd0c8307e1ccaac161cbcWinson Chung                            new AlertDialog.Builder(mContext);
247968846fdce6c01bbe474bd0c8307e1ccaac161cbcWinson Chung                        builder.setAdapter(adapter, adapter);
248068846fdce6c01bbe474bd0c8307e1ccaac161cbcWinson Chung                        builder.setCancelable(true);
248168846fdce6c01bbe474bd0c8307e1ccaac161cbcWinson Chung                        builder.setTitle(mContext.getString(
248268846fdce6c01bbe474bd0c8307e1ccaac161cbcWinson Chung                                R.string.external_drop_widget_pick_title));
248368846fdce6c01bbe474bd0c8307e1ccaac161cbcWinson Chung                        builder.setIcon(R.drawable.ic_no_applications);
248468846fdce6c01bbe474bd0c8307e1ccaac161cbcWinson Chung                        builder.show();
248555cef262f97749300c2f6e764da0b00cbcb78879Winson Chung                    }
2486a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung                }
2487a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung            }
2488a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung            return true;
2489580e27748137ff08599aa719d106b31215a28353Winson Chung        }
2490a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung        case DragEvent.ACTION_DRAG_ENDED:
2491a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung            // Hide the page outlines after the drop
2492a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung            layout.onDragExit();
2493a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung            hideOutlines();
2494a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung            return true;
2495a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung        }
2496a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung        return super.onDragEvent(event);
2497a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung    }
2498a9abd0e0bdedb5cbbd12b84cb83037a735e79a20Winson Chung
24994516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka    /*
25004516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka    *
25014516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka    * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's
25024516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka    * coordinate space. The argument xy is modified with the return result.
25034516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka    *
25044516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka    */
25054516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka   void mapPointFromSelfToChild(View v, float[] xy) {
25064516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka       mapPointFromSelfToChild(v, xy, null);
25074516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka   }
25084516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka
25094516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka   /*
25104516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka    *
25114516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka    * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's
25124516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka    * coordinate space. The argument xy is modified with the return result.
25134516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka    *
25144516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka    * if cachedInverseMatrix is not null, this method will just use that matrix instead of
2515d718d6a7ba424b600052a147e5633a201a04ccb7Michael Jurka    * computing it itself; we use this to avoid redundant matrix inversions in
25164516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka    * findMatchingPageForDragOver
25174516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka    *
25184516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka    */
25194516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka   void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) {
25204516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka       if (cachedInverseMatrix == null) {
25214516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka           v.getMatrix().invert(mTempInverseMatrix);
25224516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka           cachedInverseMatrix = mTempInverseMatrix;
25234516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka       }
25243bc21c35fa167ac233e19df0c9a01b0a07173ed8Winson Chung       int scrollX = mScrollX;
25253bc21c35fa167ac233e19df0c9a01b0a07173ed8Winson Chung       if (mNextPage != INVALID_PAGE) {
25263bc21c35fa167ac233e19df0c9a01b0a07173ed8Winson Chung           scrollX = mScroller.getFinalX();
25273bc21c35fa167ac233e19df0c9a01b0a07173ed8Winson Chung       }
25283bc21c35fa167ac233e19df0c9a01b0a07173ed8Winson Chung       xy[0] = xy[0] + scrollX - v.getLeft();
25294516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka       xy[1] = xy[1] + mScrollY - v.getTop();
25304516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka       cachedInverseMatrix.mapPoints(xy);
25314516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka   }
25324516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka
25334516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka   /*
25343d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung    * Maps a point from the Workspace's coordinate system to another sibling view's. (Workspace
25353d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung    * covers the full screen)
25363d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung    */
25373d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung   void mapPointFromSelfToSibling(View v, float[] xy) {
25383d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung       xy[0] = xy[0] - v.getLeft();
25393d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung       xy[1] = xy[1] - v.getTop();
25403d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung   }
25413d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung
25423d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung   /*
25434516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka    *
25444516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka    * Convert the 2D coordinate xy from this CellLayout's coordinate space to
25454516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka    * the parent View's coordinate space. The argument xy is modified with the return result.
25464516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka    *
25474516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka    */
25484516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka   void mapPointFromChildToSelf(View v, float[] xy) {
25494516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka       v.getMatrix().mapPoints(xy);
25503bc21c35fa167ac233e19df0c9a01b0a07173ed8Winson Chung       int scrollX = mScrollX;
25513bc21c35fa167ac233e19df0c9a01b0a07173ed8Winson Chung       if (mNextPage != INVALID_PAGE) {
25523bc21c35fa167ac233e19df0c9a01b0a07173ed8Winson Chung           scrollX = mScroller.getFinalX();
25533bc21c35fa167ac233e19df0c9a01b0a07173ed8Winson Chung       }
25543bc21c35fa167ac233e19df0c9a01b0a07173ed8Winson Chung       xy[0] -= (scrollX - v.getLeft());
25554516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka       xy[1] -= (mScrollY - v.getTop());
25564516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka   }
25574516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka
2558e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen   static private float squaredDistance(float[] point1, float[] point2) {
25594516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka        float distanceX = point1[0] - point2[0];
25604516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka        float distanceY = point2[1] - point2[1];
25614516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka        return distanceX * distanceX + distanceY * distanceY;
2562e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen   }
25630280c3be4d9f8fc6fdf015b7ecd276eb26f76f2dMichael Jurka
25644516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka    /*
25654516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka     *
25664516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka     * Returns true if the passed CellLayout cl overlaps with dragView
25674516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka     *
25684516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka     */
25694516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka    boolean overlaps(CellLayout cl, DragView dragView,
25704516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka            int dragViewX, int dragViewY, Matrix cachedInverseMatrix) {
25714516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka        // Transform the coordinates of the item being dragged to the CellLayout's coordinates
25724516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka        final float[] draggedItemTopLeft = mTempDragCoordinates;
2573f12c75cb48f87955600c56ccbe0aac84b0c11b28Michael Jurka        draggedItemTopLeft[0] = dragViewX;
2574f12c75cb48f87955600c56ccbe0aac84b0c11b28Michael Jurka        draggedItemTopLeft[1] = dragViewY;
25754516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka        final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates;
2576f12c75cb48f87955600c56ccbe0aac84b0c11b28Michael Jurka        draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth();
2577f12c75cb48f87955600c56ccbe0aac84b0c11b28Michael Jurka        draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight();
25784516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka
25794516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka        // Transform the dragged item's top left coordinates
25804516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka        // to the CellLayout's local coordinates
25814516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka        mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix);
25824516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka        float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]);
25834516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka        float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]);
25844516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka
25854516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka        if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) {
25864516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka            // Transform the dragged item's bottom right coordinates
25874516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka            // to the CellLayout's local coordinates
25884516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka            mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix);
25894516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka            float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]);
25904516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka            float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]);
25914516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka
25924516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka            if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) {
25934516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka                float overlap = (overlapRegionRight - overlapRegionLeft) *
25944516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka                         (overlapRegionBottom - overlapRegionTop);
25954516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka                if (overlap > 0) {
25964516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka                    return true;
25974516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka                }
25984516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka             }
25994516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka        }
26004516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka        return false;
26014516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka    }
2602a63c452f5bd491ba9b28c332ccedc6c6c7e2f3ccMichael Jurka
26034516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka    /*
26044516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka     *
26054516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka     * This method returns the CellLayout that is currently being dragged to. In order to drag
26064516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka     * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second
26074516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka     * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one
26084516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka     *
26094516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka     * Return null if no CellLayout is currently being dragged over
26104516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka     *
26114516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka     */
26124516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka    private CellLayout findMatchingPageForDragOver(
261300618753e9f0ad941c13efb0b6804e4a06ecb076Adam Cohen            DragView dragView, float originX, float originY, boolean exact) {
26144516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka        // We loop through all the screens (ie CellLayouts) and see which ones overlap
26154516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka        // with the item being dragged and then choose the one that's closest to the touch point
2616a63c452f5bd491ba9b28c332ccedc6c6c7e2f3ccMichael Jurka        final int screenCount = getChildCount();
2617a63c452f5bd491ba9b28c332ccedc6c6c7e2f3ccMichael Jurka        CellLayout bestMatchingScreen = null;
26180280c3be4d9f8fc6fdf015b7ecd276eb26f76f2dMichael Jurka        float smallestDistSoFar = Float.MAX_VALUE;
26194516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka
2620a63c452f5bd491ba9b28c332ccedc6c6c7e2f3ccMichael Jurka        for (int i = 0; i < screenCount; i++) {
26213d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung            CellLayout cl = (CellLayout) getChildAt(i);
2622a63c452f5bd491ba9b28c332ccedc6c6c7e2f3ccMichael Jurka
262300618753e9f0ad941c13efb0b6804e4a06ecb076Adam Cohen            final float[] touchXy = {originX, originY};
26244516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka            // Transform the touch coordinates to the CellLayout's local coordinates
26254516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka            // If the touch point is within the bounds of the cell layout, we can return immediately
26260280c3be4d9f8fc6fdf015b7ecd276eb26f76f2dMichael Jurka            cl.getMatrix().invert(mTempInverseMatrix);
26274516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka            mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix);
26284516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka
26294516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka            if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() &&
26304516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka                    touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) {
26314516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka                return cl;
26324516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka            }
26334516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka
263496ef409ebdc798a82786e5dcecfd7d897be0ed30Winson Chung            if (!exact) {
26354516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka                // Get the center of the cell layout in screen coordinates
26364516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka                final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates;
26374516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka                cellLayoutCenter[0] = cl.getWidth()/2;
26384516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka                cellLayoutCenter[1] = cl.getHeight()/2;
26394516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka                mapPointFromChildToSelf(cl, cellLayoutCenter);
26404516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka
264100618753e9f0ad941c13efb0b6804e4a06ecb076Adam Cohen                touchXy[0] = originX;
264200618753e9f0ad941c13efb0b6804e4a06ecb076Adam Cohen                touchXy[1] = originY;
26434516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka
26444516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka                // Calculate the distance between the center of the CellLayout
26454516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka                // and the touch point
26464516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka                float dist = squaredDistance(touchXy, cellLayoutCenter);
26474516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka
26484516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka                if (dist < smallestDistSoFar) {
26490280c3be4d9f8fc6fdf015b7ecd276eb26f76f2dMichael Jurka                    smallestDistSoFar = dist;
2650a63c452f5bd491ba9b28c332ccedc6c6c7e2f3ccMichael Jurka                    bestMatchingScreen = cl;
2651a63c452f5bd491ba9b28c332ccedc6c6c7e2f3ccMichael Jurka                }
26524516c11039d77066281f69f9b5d30fdaf1bc05aeMichael Jurka            }
2653a63c452f5bd491ba9b28c332ccedc6c6c7e2f3ccMichael Jurka        }
2654a63c452f5bd491ba9b28c332ccedc6c6c7e2f3ccMichael Jurka        return bestMatchingScreen;
2655a63c452f5bd491ba9b28c332ccedc6c6c7e2f3ccMichael Jurka    }
2656a63c452f5bd491ba9b28c332ccedc6c6c7e2f3ccMichael Jurka
2657e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen    // This is used to compute the visual center of the dragView. This point is then
2658e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen    // used to visualize drop locations and determine where to drop an item. The idea is that
2659e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen    // the visual center represents the user's interpretation of where the item is, and hence
2660e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen    // is the appropriate point to use when determining drop location.
2661e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen    private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset,
2662e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen            DragView dragView, float[] recycle) {
2663e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen        float res[];
2664e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen        if (recycle == null) {
2665e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen            res = new float[2];
2666e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen        } else {
2667e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen            res = recycle;
2668e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen        }
2669e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen
2670e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen        // First off, the drag view has been shifted in a way that is not represented in the
2671e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen        // x and y values or the x/yOffsets. Here we account for that shift.
2672e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen        x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX);
2673e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen        y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY);
2674e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen
2675e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen        // These represent the visual top and left of drag view if a dragRect was provided.
2676e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen        // If a dragRect was not provided, then they correspond to the actual view left and
2677e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen        // top, as the dragRect is in that case taken to be the entire dragView.
2678e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen        // R.dimen.dragViewOffsetY.
2679e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen        int left = x - xOffset;
2680e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen        int top = y - yOffset;
2681e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen
2682e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen        // In order to find the visual center, we shift by half the dragRect
2683e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen        res[0] = left + dragView.getDragRegion().width() / 2;
2684e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen        res[1] = top + dragView.getDragRegion().height() / 2;
2685e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen
2686e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen        return res;
2687e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen    }
2688e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen
2689ea359c6aee44c0fe3bb94f7002c3b49208b32b7fWinson Chung    private boolean isDragWidget(DragObject d) {
2690ea359c6aee44c0fe3bb94f7002c3b49208b32b7fWinson Chung        return (d.dragInfo instanceof LauncherAppWidgetInfo ||
2691ea359c6aee44c0fe3bb94f7002c3b49208b32b7fWinson Chung                d.dragInfo instanceof PendingAddWidgetInfo);
2692ea359c6aee44c0fe3bb94f7002c3b49208b32b7fWinson Chung    }
2693ea359c6aee44c0fe3bb94f7002c3b49208b32b7fWinson Chung    private boolean isExternalDragWidget(DragObject d) {
2694ea359c6aee44c0fe3bb94f7002c3b49208b32b7fWinson Chung        return d.dragSource != this && isDragWidget(d);
2695ea359c6aee44c0fe3bb94f7002c3b49208b32b7fWinson Chung    }
2696ea359c6aee44c0fe3bb94f7002c3b49208b32b7fWinson Chung
2697cb3382b1bfe1a534b1b44f5c4def9b2db605ac90Adam Cohen    public void onDragOver(DragObject d) {
2698c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung        // Skip drag over events while we are dragging over side pages
269982ac8a24883a3495a96189a6e5eb307f50177e0eAdam Cohen        if (mInScrollArea || mIsSwitchingState || mState == State.SMALL) return;
2700c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung
27014afe9b31f51022538b30646fe83780e83bf22490Winson Chung        Rect r = new Rect();
27023d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung        CellLayout layout = null;
2703c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung        ItemInfo item = (ItemInfo) d.dragInfo;
2704c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung
2705c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung        // Ensure that we have proper spans for the item that we are dropping
2706c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung        if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found");
270700618753e9f0ad941c13efb0b6804e4a06ecb076Adam Cohen        mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset,
27084afe9b31f51022538b30646fe83780e83bf22490Winson Chung            d.dragView, mDragViewVisualCenter);
270900618753e9f0ad941c13efb0b6804e4a06ecb076Adam Cohen
2710c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung        // Identify whether we have dragged over a side page
2711d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka        if (isSmall()) {
2712ea359c6aee44c0fe3bb94f7002c3b49208b32b7fWinson Chung            if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) {
27134afe9b31f51022538b30646fe83780e83bf22490Winson Chung                mLauncher.getHotseat().getHitRect(r);
27144afe9b31f51022538b30646fe83780e83bf22490Winson Chung                if (r.contains(d.x, d.y)) {
27154afe9b31f51022538b30646fe83780e83bf22490Winson Chung                    layout = mLauncher.getHotseat().getLayout();
27164afe9b31f51022538b30646fe83780e83bf22490Winson Chung                }
27174afe9b31f51022538b30646fe83780e83bf22490Winson Chung            }
27184afe9b31f51022538b30646fe83780e83bf22490Winson Chung            if (layout == null) {
271996ef409ebdc798a82786e5dcecfd7d897be0ed30Winson Chung                layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false);
27204afe9b31f51022538b30646fe83780e83bf22490Winson Chung            }
2721c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung            if (layout != mDragTargetLayout) {
2722c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung                // Cancel all intermediate folder states
2723c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung                cleanupFolderCreation(d);
2724e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen
2725c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung                if (mDragTargetLayout != null) {
2726c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung                    mDragTargetLayout.setIsDragOverlapping(false);
2727c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung                    mDragTargetLayout.onDragExit();
2728d718d6a7ba424b600052a147e5633a201a04ccb7Michael Jurka                }
2729c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung                mDragTargetLayout = layout;
2730c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung                if (mDragTargetLayout != null) {
2731c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung                    mDragTargetLayout.setIsDragOverlapping(true);
2732c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung                    mDragTargetLayout.onDragEnter();
2733c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung                } else {
2734c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung                    mLastDragOverView = null;
2735c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung                }
2736c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung
2737d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka                boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED);
2738c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung                if (isInSpringLoadedMode) {
27394afe9b31f51022538b30646fe83780e83bf22490Winson Chung                    if (mLauncher.isHotseatLayout(layout)) {
27404afe9b31f51022538b30646fe83780e83bf22490Winson Chung                        mSpringLoadedDragController.cancel();
27414afe9b31f51022538b30646fe83780e83bf22490Winson Chung                    } else {
27424afe9b31f51022538b30646fe83780e83bf22490Winson Chung                        mSpringLoadedDragController.setAlarm(mDragTargetLayout);
27434afe9b31f51022538b30646fe83780e83bf22490Winson Chung                    }
2744d3ef3065ab0941567c45e9aec98783138b623c68Michael Jurka                }
2745d3ef3065ab0941567c45e9aec98783138b623c68Michael Jurka            }
2746c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung        } else {
27473d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung            // Test to see if we are over the hotseat otherwise just use the current page
2748ea359c6aee44c0fe3bb94f7002c3b49208b32b7fWinson Chung            if (mLauncher.getHotseat() != null && !isDragWidget(d)) {
27493d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                mLauncher.getHotseat().getHitRect(r);
27503d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                if (r.contains(d.x, d.y)) {
27513d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                    layout = mLauncher.getHotseat().getLayout();
27523d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                }
27533d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung            }
27543d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung            if (layout == null) {
27553d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                layout = getCurrentDropLayout();
27563d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung            }
2757c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung            if (layout != mDragTargetLayout) {
2758c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung                if (mDragTargetLayout != null) {
2759c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung                    mDragTargetLayout.setIsDragOverlapping(false);
2760c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung                    mDragTargetLayout.onDragExit();
2761d718d6a7ba424b600052a147e5633a201a04ccb7Michael Jurka                }
2762c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung                mDragTargetLayout = layout;
2763c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung                mDragTargetLayout.setIsDragOverlapping(true);
2764c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung                mDragTargetLayout.onDragEnter();
2765c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung            }
2766c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung        }
2767a63c452f5bd491ba9b28c332ccedc6c6c7e2f3ccMichael Jurka
2768c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung        // Handle the drag over
2769c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung        if (mDragTargetLayout != null) {
2770c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung            final View child = (mDragInfo == null) ? null : mDragInfo.cell;
277119072da7441e07d5e90026d9e9e1b38f11245e44Adam Cohen
2772c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung            // We want the point to be mapped to the dragTarget.
27733d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung            if (mLauncher.isHotseatLayout(mDragTargetLayout)) {
27743d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter);
27753d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung            } else {
27763d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null);
27773d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung            }
2778c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung            ItemInfo info = (ItemInfo) d.dragInfo;
277919072da7441e07d5e90026d9e9e1b38f11245e44Adam Cohen
2780c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung            mTargetCell = findNearestArea((int) mDragViewVisualCenter[0],
2781c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung                    (int) mDragViewVisualCenter[1], 1, 1, mDragTargetLayout, mTargetCell);
2782c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung            final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0],
2783c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung                    mTargetCell[1]);
2784c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung
2785c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung            boolean userFolderPending = willCreateUserFolder(info, mDragTargetLayout,
2786c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung                    mTargetCell, false);
2787c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung            boolean isOverFolder = dragOverView instanceof FolderIcon;
2788c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung            if (dragOverView != mLastDragOverView) {
2789c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung                cancelFolderCreation();
2790c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung                if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) {
2791c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung                    ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo);
2792d718d6a7ba424b600052a147e5633a201a04ccb7Michael Jurka                }
27931262e369484ce7f2565655ed80e6299232c70bd7Patrick Dubroy            }
2794c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung
2795c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung            if (userFolderPending && dragOverView != mLastDragOverView) {
2796c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung                mFolderCreationAlarm.setOnAlarmListener(new
2797c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung                        FolderCreationAlarmListener(mDragTargetLayout, mTargetCell[0], mTargetCell[1]));
2798c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung                mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT);
2799c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung            }
2800c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung
2801c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung            if (dragOverView != mLastDragOverView && isOverFolder) {
2802c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung                ((FolderIcon) dragOverView).onDragEnter(d.dragInfo);
2803c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung                if (mDragTargetLayout != null) {
2804c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung                    mDragTargetLayout.clearDragOutlines();
2805c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung                }
2806c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung            }
2807c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung            mLastDragOverView = dragOverView;
2808c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung
2809c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung            if (!mCreateUserFolderOnDrop && !isOverFolder) {
2810c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung                mDragTargetLayout.visualizeDropLocation(child, mDragOutline,
2811c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung                        (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1],
2812b8c69f3c17a40adc2d85e8e996f754c383c293dcWinson Chung                        item.spanX, item.spanY, d.dragView.getDragVisualizeOffset(),
2813b8c69f3c17a40adc2d85e8e996f754c383c293dcWinson Chung                        d.dragView.getDragRegion());
2814c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung            }
2815c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung        }
2816c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung    }
2817c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung
2818c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung    private void cleanupFolderCreation(DragObject d) {
2819c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung        if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) {
2820c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung            mDragFolderRingAnimator.animateToNaturalState();
2821c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung        }
2822c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung        if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) {
2823c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung            if (d != null) {
2824c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung                ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo);
2825c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung            }
2826976ebec9e31643d3513f9f0de2b433d9aa186ce9Patrick Dubroy        }
2827c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung        mFolderCreationAlarm.cancelAlarm();
282831dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    }
282931dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project
2830c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen    private void cancelFolderCreation() {
2831c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen        if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) {
2832c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen            mDragFolderRingAnimator.animateToNaturalState();
2833c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen        }
2834c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen        mCreateUserFolderOnDrop = false;
2835c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen        mFolderCreationAlarm.cancelAlarm();
2836c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen    }
2837c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen
283819072da7441e07d5e90026d9e9e1b38f11245e44Adam Cohen    class FolderCreationAlarmListener implements OnAlarmListener {
283969ce2e5beaa1a57c7b8fa14a2d6ff0b3abeb93c0Adam Cohen        CellLayout layout;
284069ce2e5beaa1a57c7b8fa14a2d6ff0b3abeb93c0Adam Cohen        int cellX;
284169ce2e5beaa1a57c7b8fa14a2d6ff0b3abeb93c0Adam Cohen        int cellY;
284219072da7441e07d5e90026d9e9e1b38f11245e44Adam Cohen
284369ce2e5beaa1a57c7b8fa14a2d6ff0b3abeb93c0Adam Cohen        public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) {
284469ce2e5beaa1a57c7b8fa14a2d6ff0b3abeb93c0Adam Cohen            this.layout = layout;
284569ce2e5beaa1a57c7b8fa14a2d6ff0b3abeb93c0Adam Cohen            this.cellX = cellX;
284669ce2e5beaa1a57c7b8fa14a2d6ff0b3abeb93c0Adam Cohen            this.cellY = cellY;
284719072da7441e07d5e90026d9e9e1b38f11245e44Adam Cohen        }
284819072da7441e07d5e90026d9e9e1b38f11245e44Adam Cohen
284919072da7441e07d5e90026d9e9e1b38f11245e44Adam Cohen        public void onAlarm(Alarm alarm) {
285019072da7441e07d5e90026d9e9e1b38f11245e44Adam Cohen            if (mDragFolderRingAnimator == null) {
285119072da7441e07d5e90026d9e9e1b38f11245e44Adam Cohen                mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null);
285219072da7441e07d5e90026d9e9e1b38f11245e44Adam Cohen            }
285369ce2e5beaa1a57c7b8fa14a2d6ff0b3abeb93c0Adam Cohen            mDragFolderRingAnimator.setCell(cellX, cellY);
285469ce2e5beaa1a57c7b8fa14a2d6ff0b3abeb93c0Adam Cohen            mDragFolderRingAnimator.setCellLayout(layout);
285519072da7441e07d5e90026d9e9e1b38f11245e44Adam Cohen            mDragFolderRingAnimator.animateToAcceptState();
285669ce2e5beaa1a57c7b8fa14a2d6ff0b3abeb93c0Adam Cohen            layout.showFolderAccept(mDragFolderRingAnimator);
285769ce2e5beaa1a57c7b8fa14a2d6ff0b3abeb93c0Adam Cohen            layout.clearDragOutlines();
285819072da7441e07d5e90026d9e9e1b38f11245e44Adam Cohen            mCreateUserFolderOnDrop = true;
285919072da7441e07d5e90026d9e9e1b38f11245e44Adam Cohen        }
286019072da7441e07d5e90026d9e9e1b38f11245e44Adam Cohen    }
286119072da7441e07d5e90026d9e9e1b38f11245e44Adam Cohen
2862a34abf8c781485b788fddacb352d586bffca886cWinson Chung    @Override
2863a34abf8c781485b788fddacb352d586bffca886cWinson Chung    public void getHitRect(Rect outRect) {
2864a34abf8c781485b788fddacb352d586bffca886cWinson Chung        // We want the workspace to have the whole area of the display (it will find the correct
2865a34abf8c781485b788fddacb352d586bffca886cWinson Chung        // cell layout to drop to in the existing drag/drop logic.
2866cff6af81d721415785bddc2efd74e179d2def9daAdam Cohen        outRect.set(0, 0, mDisplayWidth, mDisplayHeight);
2867a34abf8c781485b788fddacb352d586bffca886cWinson Chung    }
2868a34abf8c781485b788fddacb352d586bffca886cWinson Chung
28692b9ff37edb3f5965559b3ff7d37e418b4a2917a1Patrick Dubroy    /**
28702b9ff37edb3f5965559b3ff7d37e418b4a2917a1Patrick Dubroy     * Add the item specified by dragInfo to the given layout.
28712b9ff37edb3f5965559b3ff7d37e418b4a2917a1Patrick Dubroy     * @return true if successful
28722b9ff37edb3f5965559b3ff7d37e418b4a2917a1Patrick Dubroy     */
2873120980bd00f5eecec5717f49a3d7db96571025a9Adam Cohen    public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) {
2874120980bd00f5eecec5717f49a3d7db96571025a9Adam Cohen        if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) {
2875bbaa75c8c432c46c00ee2eb836e438b3774d6709Patrick Dubroy            onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false);
28762b9ff37edb3f5965559b3ff7d37e418b4a2917a1Patrick Dubroy            return true;
28772b9ff37edb3f5965559b3ff7d37e418b4a2917a1Patrick Dubroy        }
28780280c3be4d9f8fc6fdf015b7ecd276eb26f76f2dMichael Jurka        mLauncher.showOutOfSpaceMessage();
28792b9ff37edb3f5965559b3ff7d37e418b4a2917a1Patrick Dubroy        return false;
28802b9ff37edb3f5965559b3ff7d37e418b4a2917a1Patrick Dubroy    }
28812b9ff37edb3f5965559b3ff7d37e418b4a2917a1Patrick Dubroy
2882d5e42733799817d11d739b0a882da8dda721126dAdam Cohen    private void onDropExternal(int[] touchXY, Object dragInfo,
2883d5e42733799817d11d739b0a882da8dda721126dAdam Cohen            CellLayout cellLayout, boolean insertAtFirst) {
2884e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen        onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null);
2885d5e42733799817d11d739b0a882da8dda721126dAdam Cohen    }
2886d5e42733799817d11d739b0a882da8dda721126dAdam Cohen
2887120980bd00f5eecec5717f49a3d7db96571025a9Adam Cohen    /**
2888120980bd00f5eecec5717f49a3d7db96571025a9Adam Cohen     * Drop an item that didn't originate on one of the workspace screens.
2889120980bd00f5eecec5717f49a3d7db96571025a9Adam Cohen     * It may have come from Launcher (e.g. from all apps or customize), or it may have
2890120980bd00f5eecec5717f49a3d7db96571025a9Adam Cohen     * come from another app altogether.
2891120980bd00f5eecec5717f49a3d7db96571025a9Adam Cohen     *
2892120980bd00f5eecec5717f49a3d7db96571025a9Adam Cohen     * NOTE: This can also be called when we are outside of a drag event, when we want
2893120980bd00f5eecec5717f49a3d7db96571025a9Adam Cohen     * to add an item to one of the workspace screens.
2894120980bd00f5eecec5717f49a3d7db96571025a9Adam Cohen     */
2895557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung    private void onDropExternal(final int[] touchXY, final Object dragInfo,
2896557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung            final CellLayout cellLayout, boolean insertAtFirst, DragObject d) {
2897557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung        final Runnable exitSpringLoadedRunnable = new Runnable() {
2898557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung            @Override
2899557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung            public void run() {
2900ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen                mLauncher.exitSpringLoadedDragModeDelayed(true, false, null);
2901557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung            }
2902557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung        };
2903b7e1618c627c6471c565f4f599228648d9e70a10Adam Cohen
2904b7e1618c627c6471c565f4f599228648d9e70a10Adam Cohen        ItemInfo info = (ItemInfo) dragInfo;
2905b7e1618c627c6471c565f4f599228648d9e70a10Adam Cohen        int spanX = info.spanX;
2906b7e1618c627c6471c565f4f599228648d9e70a10Adam Cohen        int spanY = info.spanY;
2907b7e1618c627c6471c565f4f599228648d9e70a10Adam Cohen        if (mDragInfo != null) {
2908b7e1618c627c6471c565f4f599228648d9e70a10Adam Cohen            spanX = mDragInfo.spanX;
2909b7e1618c627c6471c565f4f599228648d9e70a10Adam Cohen            spanY = mDragInfo.spanY;
2910b7e1618c627c6471c565f4f599228648d9e70a10Adam Cohen        }
2911b7e1618c627c6471c565f4f599228648d9e70a10Adam Cohen
29123d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung        final long container = mLauncher.isHotseatLayout(cellLayout) ?
29133d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                LauncherSettings.Favorites.CONTAINER_HOTSEAT :
29143d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                    LauncherSettings.Favorites.CONTAINER_DESKTOP;
2915557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung        final int screen = indexOfChild(cellLayout);
29163d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung        if (!mLauncher.isHotseatLayout(cellLayout) && screen != mCurrentPage
29173d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                && mState != State.SPRING_LOADED) {
291876078c4ef35b6e95fb6d8129a32cf52a36625e28Adam Cohen            snapToPage(screen);
291976078c4ef35b6e95fb6d8129a32cf52a36625e28Adam Cohen        }
2920b7e1618c627c6471c565f4f599228648d9e70a10Adam Cohen
2921b7e1618c627c6471c565f4f599228648d9e70a10Adam Cohen        if (info instanceof PendingAddItemInfo) {
2922b7e1618c627c6471c565f4f599228648d9e70a10Adam Cohen            final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo;
2923b7e1618c627c6471c565f4f599228648d9e70a10Adam Cohen
2924558baaf0a0b1c6a9062a6771088098533a35222bAdam Cohen            boolean findNearestVacantCell = true;
2925558baaf0a0b1c6a9062a6771088098533a35222bAdam Cohen            if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) {
2926558baaf0a0b1c6a9062a6771088098533a35222bAdam Cohen                mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY,
2927558baaf0a0b1c6a9062a6771088098533a35222bAdam Cohen                        cellLayout, mTargetCell);
2928558baaf0a0b1c6a9062a6771088098533a35222bAdam Cohen                if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell,
2929558baaf0a0b1c6a9062a6771088098533a35222bAdam Cohen                        true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo,
2930558baaf0a0b1c6a9062a6771088098533a35222bAdam Cohen                                mDragTargetLayout, mTargetCell)) {
2931558baaf0a0b1c6a9062a6771088098533a35222bAdam Cohen                    findNearestVacantCell = false;
2932558baaf0a0b1c6a9062a6771088098533a35222bAdam Cohen                }
2933558baaf0a0b1c6a9062a6771088098533a35222bAdam Cohen            }
2934558baaf0a0b1c6a9062a6771088098533a35222bAdam Cohen            if (findNearestVacantCell) {
2935558baaf0a0b1c6a9062a6771088098533a35222bAdam Cohen                    mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], spanX, spanY, null,
2936558baaf0a0b1c6a9062a6771088098533a35222bAdam Cohen                        cellLayout, mTargetCell);
2937558baaf0a0b1c6a9062a6771088098533a35222bAdam Cohen            }
2938558baaf0a0b1c6a9062a6771088098533a35222bAdam Cohen
2939b7e1618c627c6471c565f4f599228648d9e70a10Adam Cohen            Runnable onAnimationCompleteRunnable = new Runnable() {
2940557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung                @Override
2941557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung                public void run() {
2942557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung                    // When dragging and dropping from customization tray, we deal with creating
2943557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung                    // widgets/shortcuts/folders in a slightly different way
2944b7e1618c627c6471c565f4f599228648d9e70a10Adam Cohen                    switch (pendingInfo.itemType) {
2945557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung                    case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET:
2946b7e1618c627c6471c565f4f599228648d9e70a10Adam Cohen                        mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo,
29473d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                                container, screen, mTargetCell, null);
2948557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung                        break;
2949557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung                    case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT:
2950b7e1618c627c6471c565f4f599228648d9e70a10Adam Cohen                        mLauncher.processShortcutFromDrop(pendingInfo.componentName,
29513d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                                container, screen, mTargetCell, null);
2952557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung                        break;
2953557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung                    default:
2954b7e1618c627c6471c565f4f599228648d9e70a10Adam Cohen                        throw new IllegalStateException("Unknown item type: " +
2955b7e1618c627c6471c565f4f599228648d9e70a10Adam Cohen                                pendingInfo.itemType);
2956557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung                    }
2957557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung                    cellLayout.onDragExit();
2958557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung                }
2959b7e1618c627c6471c565f4f599228648d9e70a10Adam Cohen            };
2960b7e1618c627c6471c565f4f599228648d9e70a10Adam Cohen
2961ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen            animateExternalDrop((PendingAddItemInfo) info, cellLayout, d.dragView,
2962ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen                    onAnimationCompleteRunnable, ANIMATE_INTO_POSITION);
29639c6de3d7c3e7d40e1e443b6fd69e3077ab9e9673Michael Jurka        } else {
29649c6de3d7c3e7d40e1e443b6fd69e3077ab9e9673Michael Jurka            // This is for other drag/drop cases, like dragging from All Apps
29659c6de3d7c3e7d40e1e443b6fd69e3077ab9e9673Michael Jurka            View view = null;
296631dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project
29679c6de3d7c3e7d40e1e443b6fd69e3077ab9e9673Michael Jurka            switch (info.itemType) {
29689c6de3d7c3e7d40e1e443b6fd69e3077ab9e9673Michael Jurka            case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION:
29699c6de3d7c3e7d40e1e443b6fd69e3077ab9e9673Michael Jurka            case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT:
29709c6de3d7c3e7d40e1e443b6fd69e3077ab9e9673Michael Jurka                if (info.container == NO_ID && info instanceof ApplicationInfo) {
29719c6de3d7c3e7d40e1e443b6fd69e3077ab9e9673Michael Jurka                    // Came from all apps -- make a copy
2972c9d95c5897fc5ebbf53903d4ab18ad13d196f643Michael Jurka                    info = new ShortcutInfo((ApplicationInfo) info);
29739c6de3d7c3e7d40e1e443b6fd69e3077ab9e9673Michael Jurka                }
29749c6de3d7c3e7d40e1e443b6fd69e3077ab9e9673Michael Jurka                view = mLauncher.createShortcut(R.layout.application, cellLayout,
29759c6de3d7c3e7d40e1e443b6fd69e3077ab9e9673Michael Jurka                        (ShortcutInfo) info);
29769c6de3d7c3e7d40e1e443b6fd69e3077ab9e9673Michael Jurka                break;
2977df2cc41acbfacd576f99483a4af1cda32ebd3d09Adam Cohen            case LauncherSettings.Favorites.ITEM_TYPE_FOLDER:
2978c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen                view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout,
2979c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen                        (FolderInfo) info, mIconCache);
29809c6de3d7c3e7d40e1e443b6fd69e3077ab9e9673Michael Jurka                break;
29819c6de3d7c3e7d40e1e443b6fd69e3077ab9e9673Michael Jurka            default:
29829c6de3d7c3e7d40e1e443b6fd69e3077ab9e9673Michael Jurka                throw new IllegalStateException("Unknown item type: " + info.itemType);
29839c6de3d7c3e7d40e1e443b6fd69e3077ab9e9673Michael Jurka            }
298431dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project
2985c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen            // First we find the cell nearest to point at which the item is
2986c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen            // dropped, without any consideration to whether there is an item there.
2987c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen            if (touchXY != null) {
2988c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen                mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY,
2989c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen                        cellLayout, mTargetCell);
2990557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung                d.postAnimationRunnable = exitSpringLoadedRunnable;
29913d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, true,
29923d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                        d.dragView, d.postAnimationRunnable)) {
2993c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen                    return;
2994c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen                }
29953e8f811f31a2275e778244427271f77f4116c08bAdam Cohen                if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, d, true)) {
2996c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen                    return;
2997c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen                }
299810b1737910ea7890ca95bbbe5363fd5aa513b856Adam Cohen            }
299910b1737910ea7890ca95bbbe5363fd5aa513b856Adam Cohen
3000c4e772e4b3f21bde342e475ebc49b5b76b8f74e8Michael Jurka            if (touchXY != null) {
30019c6de3d7c3e7d40e1e443b6fd69e3077ab9e9673Michael Jurka                // when dragging and dropping, just find the closest free spot
3002c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen                mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], 1, 1, null,
3003c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen                        cellLayout, mTargetCell);
30049c6de3d7c3e7d40e1e443b6fd69e3077ab9e9673Michael Jurka            } else {
30059c6de3d7c3e7d40e1e443b6fd69e3077ab9e9673Michael Jurka                cellLayout.findCellForSpan(mTargetCell, 1, 1);
300631dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project            }
30073d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung            addInScreen(view, container, screen, mTargetCell[0], mTargetCell[1], info.spanX,
30083d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                    info.spanY, insertAtFirst);
3009716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohen            cellLayout.onDropChild(view);
30106569f2c80e179c2f8ed73dae6b01d971ec20f005Patrick Dubroy            CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams();
3011d5e42733799817d11d739b0a882da8dda721126dAdam Cohen            cellLayout.getChildrenLayout().measureChild(view);
3012d5e42733799817d11d739b0a882da8dda721126dAdam Cohen
30133d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung            LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen,
3014aafa03cbb925c74be1c13f8bb99d928be429e62fWinson Chung                    lp.cellX, lp.cellY);
30153e8f811f31a2275e778244427271f77f4116c08bAdam Cohen
30163e8f811f31a2275e778244427271f77f4116c08bAdam Cohen            if (d.dragView != null) {
30174b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen                // We wrap the animation call in the temporary set and reset of the current
30184b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen                // cellLayout to its final transform -- this means we animate the drag view to
30194b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen                // the correct final location.
30204b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen                setFinalTransitionTransform(cellLayout);
3021557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung                mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view,
30224b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen                        exitSpringLoadedRunnable);
30234b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen                resetTransitionTransform(cellLayout);
30244b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen            }
30254b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen        }
30264b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen    }
30274b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen
3028ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen    public Bitmap createWidgetBitmap(PendingAddWidgetInfo widgetInfo) {
3029ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen        int[] unScaledSize = mLauncher.getWorkspace().estimateItemSize(widgetInfo.spanX,
3030ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen                widgetInfo.spanY, widgetInfo, false);
3031ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen        View layout = widgetInfo.boundWidget;
3032ef3dd6efe03c988be1fe980fbed75333017e6760Adam Cohen        mLauncher.getDragLayer().removeView(layout);
3033ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen        layout.setVisibility(VISIBLE);
3034ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen
3035ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen        int width = MeasureSpec.makeMeasureSpec(unScaledSize[0], MeasureSpec.EXACTLY);
3036ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen        int height = MeasureSpec.makeMeasureSpec(unScaledSize[1], MeasureSpec.EXACTLY);
3037ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen        Bitmap b = Bitmap.createBitmap(unScaledSize[0], unScaledSize[1],
3038ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen                Bitmap.Config.ARGB_8888);
3039ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen        Canvas c = new Canvas(b);
3040ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen
3041ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen        layout.measure(width, height);
3042ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen        layout.layout(0, 0, unScaledSize[0], unScaledSize[1]);
3043ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen        layout.draw(c);
3044ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen        c.setBitmap(null);
3045ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen        return b;
3046ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen    }
3047ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen
3048ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen    public void animateExternalDrop(PendingAddItemInfo pendingInfo, CellLayout cellLayout,
3049ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen            DragView dragView, Runnable onCompleteRunnable, int animationType) {
3050ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen        // Now we animate the dragView, (ie. the widget or shortcut preview) into its final
3051ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen        // location and size on the home screen.
3052ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen        int spanX = pendingInfo.spanX;
3053ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen        int spanY = pendingInfo.spanY;
3054ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen        RectF r = estimateItemPosition(cellLayout, pendingInfo,
3055ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen                mTargetCell[0], mTargetCell[1], spanX, spanY);
3056ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen        int loc[] = new int[2];
3057ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen        loc[0] = (int) r.left;
3058ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen        loc[1] = (int) r.top;
3059ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen        setFinalTransitionTransform(cellLayout);
3060ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen        float cellLayoutScale =
3061ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen                mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(cellLayout, loc);
3062ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen        resetTransitionTransform(cellLayout);
3063ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen
3064ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen        float dragViewScaleX = r.width() / dragView.getMeasuredWidth();
3065ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen        float dragViewScaleY = r.height() / dragView.getMeasuredHeight();
3066ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen        // The animation will scale the dragView about its center, so we need to center about
3067ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen        // the final location.
3068ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen        loc[0] -= (dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2;
3069ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen        loc[1] -= (dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2;
3070ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen
3071ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen        float scaleX = dragViewScaleX * cellLayoutScale;
3072ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen        float scaleY = dragViewScaleY * cellLayoutScale;
3073ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen
3074ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen        Resources res = mLauncher.getResources();
3075ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen        int duration = res.getInteger(R.integer.config_dropAnimMaxDuration) - 200;
3076ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen
3077ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen        int animationEnd = DragLayer.ANIMATION_END_REMAIN_VISIBLE;
3078ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen        if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET &&
3079ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen                (((PendingAddWidgetInfo) pendingInfo).info.configure == null ||
3080ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen                animationType == COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION)) {
3081ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen            Bitmap crossFadeBitmap = createWidgetBitmap((PendingAddWidgetInfo) pendingInfo);
3082ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen            dragView.setCrossFadeBitmap(crossFadeBitmap);
3083ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen            dragView.crossFade((int) (duration * 0.8f));
3084ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen            animationEnd = DragLayer.ANIMATION_END_DISAPPEAR;
3085ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen        } else {
3086ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen            scaleX = scaleY = Math.min(scaleX,  scaleY);
3087ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen        }
3088ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen
30897bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung        if (animationType == CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION) {
30907bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung            mLauncher.getDragLayer().animateViewIntoPosition(dragView, loc, 0f, 0.1f, 0.1f,
3091ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen                    DragLayer.ANIMATION_END_DISAPPEAR, onCompleteRunnable, duration);
3092ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen        } else {
30937bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung            mLauncher.getDragLayer().animateViewIntoPosition(dragView, loc, 1f, scaleX, scaleY,
3094ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen                animationEnd, onCompleteRunnable, duration);
3095ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen        }
3096ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen    }
3097ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen
30984b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen    public void setFinalTransitionTransform(CellLayout layout) {
30994b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen        if (isSwitchingState()) {
31004b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen            int index = indexOfChild(layout);
31014b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen            mCurrentScaleX = layout.getScaleX();
31024b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen            mCurrentScaleY = layout.getScaleY();
31034b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen            mCurrentTranslationX = layout.getTranslationX();
31044b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen            mCurrentTranslationY = layout.getTranslationY();
31054b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen            mCurrentRotationY = layout.getRotationY();
31064b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen            layout.setScaleX(mNewScaleXs[index]);
31074b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen            layout.setScaleY(mNewScaleYs[index]);
31084b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen            layout.setTranslationX(mNewTranslationXs[index]);
31094b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen            layout.setTranslationY(mNewTranslationYs[index]);
31104b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen            layout.setRotationY(mNewRotationYs[index]);
31114b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen        }
31124b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen    }
31134b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen    public void resetTransitionTransform(CellLayout layout) {
31144b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen        if (isSwitchingState()) {
31154b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen            mCurrentScaleX = layout.getScaleX();
31164b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen            mCurrentScaleY = layout.getScaleY();
31174b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen            mCurrentTranslationX = layout.getTranslationX();
31184b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen            mCurrentTranslationY = layout.getTranslationY();
31194b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen            mCurrentRotationY = layout.getRotationY();
31204b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen            layout.setScaleX(mCurrentScaleX);
31214b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen            layout.setScaleY(mCurrentScaleY);
31224b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen            layout.setTranslationX(mCurrentTranslationX);
31234b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen            layout.setTranslationY(mCurrentTranslationY);
31244b285c5a60028f7c9ce39cfb318a730d0ae95c27Adam Cohen            layout.setRotationY(mCurrentRotationY);
3125af44209bfa60da3c7ab49b7f508f9effd316ee41Michael Jurka        }
312631dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    }
3127aafa03cbb925c74be1c13f8bb99d928be429e62fWinson Chung
312870864289fba6daf07b8de98524cdfb765a62552dJeff Sharkey    /**
312970864289fba6daf07b8de98524cdfb765a62552dJeff Sharkey     * Return the current {@link CellLayout}, correctly picking the destination
313070864289fba6daf07b8de98524cdfb765a62552dJeff Sharkey     * screen while a scroll is in progress.
313170864289fba6daf07b8de98524cdfb765a62552dJeff Sharkey     */
31325f445425606b2c27276a79e9e871cf7f67b1b719Patrick Dubroy    public CellLayout getCurrentDropLayout() {
31335f445425606b2c27276a79e9e871cf7f67b1b719Patrick Dubroy        return (CellLayout) getChildAt(mNextPage == INVALID_PAGE ? mCurrentPage : mNextPage);
313470864289fba6daf07b8de98524cdfb765a62552dJeff Sharkey    }
313531dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project
313670864289fba6daf07b8de98524cdfb765a62552dJeff Sharkey    /**
31370280c3be4d9f8fc6fdf015b7ecd276eb26f76f2dMichael Jurka     * Return the current CellInfo describing our current drag; this method exists
31380280c3be4d9f8fc6fdf015b7ecd276eb26f76f2dMichael Jurka     * so that Launcher can sync this object with the correct info when the activity is created/
31390280c3be4d9f8fc6fdf015b7ecd276eb26f76f2dMichael Jurka     * destroyed
31400280c3be4d9f8fc6fdf015b7ecd276eb26f76f2dMichael Jurka     *
31410280c3be4d9f8fc6fdf015b7ecd276eb26f76f2dMichael Jurka     */
31420280c3be4d9f8fc6fdf015b7ecd276eb26f76f2dMichael Jurka    public CellLayout.CellInfo getDragInfo() {
31430280c3be4d9f8fc6fdf015b7ecd276eb26f76f2dMichael Jurka        return mDragInfo;
31440280c3be4d9f8fc6fdf015b7ecd276eb26f76f2dMichael Jurka    }
31450280c3be4d9f8fc6fdf015b7ecd276eb26f76f2dMichael Jurka
31460280c3be4d9f8fc6fdf015b7ecd276eb26f76f2dMichael Jurka    /**
314770864289fba6daf07b8de98524cdfb765a62552dJeff Sharkey     * Calculate the nearest cell where the given object would be dropped.
3148e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen     *
3149e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen     * pixelX and pixelY should be in the coordinate system of layout
315070864289fba6daf07b8de98524cdfb765a62552dJeff Sharkey     */
31516a1435d78d5133b1f37274c4d358bf6d22e10229Michael Jurka    private int[] findNearestVacantArea(int pixelX, int pixelY,
315270864289fba6daf07b8de98524cdfb765a62552dJeff Sharkey            int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) {
31530280c3be4d9f8fc6fdf015b7ecd276eb26f76f2dMichael Jurka        return layout.findNearestVacantArea(
3154e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen                pixelX, pixelY, spanX, spanY, ignoreView, recycle);
315570864289fba6daf07b8de98524cdfb765a62552dJeff Sharkey    }
3156aafa03cbb925c74be1c13f8bb99d928be429e62fWinson Chung
3157df0353815c629fc678824b07a234b89a1ff94208Adam Cohen    /**
3158df0353815c629fc678824b07a234b89a1ff94208Adam Cohen     * Calculate the nearest cell where the given object would be dropped.
3159e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen     *
3160e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen     * pixelX and pixelY should be in the coordinate system of layout
3161df0353815c629fc678824b07a234b89a1ff94208Adam Cohen     */
3162df0353815c629fc678824b07a234b89a1ff94208Adam Cohen    private int[] findNearestArea(int pixelX, int pixelY,
3163e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen            int spanX, int spanY, CellLayout layout, int[] recycle) {
3164df0353815c629fc678824b07a234b89a1ff94208Adam Cohen        return layout.findNearestArea(
3165e3e27a854f3eca363d3c5ce353d19de475272d87Adam Cohen                pixelX, pixelY, spanX, spanY, recycle);
3166df0353815c629fc678824b07a234b89a1ff94208Adam Cohen    }
3167df0353815c629fc678824b07a234b89a1ff94208Adam Cohen
3168cff6af81d721415785bddc2efd74e179d2def9daAdam Cohen    void setup(DragController dragController) {
3169c2f7f4794867cd1b3e97fd0f379ad8ad15958a6cMichael Jurka        mSpringLoadedDragController = new SpringLoadedDragController(mLauncher);
317000acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato        mDragController = dragController;
3171d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka
3172d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka        // hardware layers on children are enabled on startup, but should be disabled until
3173d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka        // needed
3174d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka        updateChildrenLayersEnabled();
3175d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka        setWallpaperDimension();
317631dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    }
317731dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project
3178e3887cc4ec3cebda2333298e56a35acb49ccdf13Patrick Dubroy    /**
3179e3887cc4ec3cebda2333298e56a35acb49ccdf13Patrick Dubroy     * Called at the end of a drag which originated on the workspace.
3180e3887cc4ec3cebda2333298e56a35acb49ccdf13Patrick Dubroy     */
3181c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen    public void onDropCompleted(View target, DragObject d, boolean success) {
3182aafa03cbb925c74be1c13f8bb99d928be429e62fWinson Chung        if (success) {
3183d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka            if (target != this) {
3184d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka                if (mDragInfo != null) {
31853d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                    getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell);
3186d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka                    if (mDragInfo.cell instanceof DropTarget) {
3187d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka                        mDragController.removeDropTarget((DropTarget) mDragInfo.cell);
3188d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka                    }
318900acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato                }
319031dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project            }
3191ce34a9768b01115def95f000a6a8f35870f10d3aPatrick Dubroy        } else if (mDragInfo != null) {
3192e3887cc4ec3cebda2333298e56a35acb49ccdf13Patrick Dubroy            // NOTE: When 'success' is true, onDragExit is called by the DragController before
3193e3887cc4ec3cebda2333298e56a35acb49ccdf13Patrick Dubroy            // calling onDropCompleted(). We call it ourselves here, but maybe this should be
3194e3887cc4ec3cebda2333298e56a35acb49ccdf13Patrick Dubroy            // moved into DragController.cancelDrag().
3195c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen            doDragExit(null);
31963d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung            CellLayout cellLayout;
31973d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung            if (mLauncher.isHotseatLayout(target)) {
31983d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                cellLayout = mLauncher.getHotseat().getLayout();
31993d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung            } else {
32003d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                cellLayout = (CellLayout) getChildAt(mDragInfo.screen);
32013d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung            }
32023d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung            cellLayout.onDropChild(mDragInfo.cell);
320331dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project        }
320436cc09b07b19198f4ea886583cef462ade27192cAdam Cohen        if (d.cancelled &&  mDragInfo.cell != null) {
320536cc09b07b19198f4ea886583cef462ade27192cAdam Cohen                mDragInfo.cell.setVisibility(VISIBLE);
320636cc09b07b19198f4ea886583cef462ade27192cAdam Cohen        }
32074be866d3a1665aa2098cb5d38d535b1ad1aab6d6Joe Onorato        mDragOutline = null;
320831dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project        mDragInfo = null;
32091afedc379f8271b9bf86a8d887c3c020d5e59214Winson Chung
32101afedc379f8271b9bf86a8d887c3c020d5e59214Winson Chung        // Hide the scrolling indicator after you pick up an item
32111afedc379f8271b9bf86a8d887c3c020d5e59214Winson Chung        hideScrollingIndicator(false);
321231dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    }
321331dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project
32140280c3be4d9f8fc6fdf015b7ecd276eb26f76f2dMichael Jurka    public boolean isDropEnabled() {
32150280c3be4d9f8fc6fdf015b7ecd276eb26f76f2dMichael Jurka        return true;
32160280c3be4d9f8fc6fdf015b7ecd276eb26f76f2dMichael Jurka    }
32170280c3be4d9f8fc6fdf015b7ecd276eb26f76f2dMichael Jurka
32180142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka    @Override
32190142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka    protected void onRestoreInstanceState(Parcelable state) {
32200142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka        super.onRestoreInstanceState(state);
32210142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka        Launcher.setScreen(mCurrentPage);
32220142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka    }
32230142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka
32240142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka    @Override
322531dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    public void scrollLeft() {
3226d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka        if (!isSmall() && !mIsSwitchingState) {
32270142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka            super.scrollLeft();
322831dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project        }
322995bb800de9b0142bea0110b074eddbcf0e475736Adam Cohen        Folder openFolder = getOpenFolder();
323095bb800de9b0142bea0110b074eddbcf0e475736Adam Cohen        if (openFolder != null) {
323195bb800de9b0142bea0110b074eddbcf0e475736Adam Cohen            openFolder.completeDragExit();
323295bb800de9b0142bea0110b074eddbcf0e475736Adam Cohen        }
323331dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    }
323431dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project
32350142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka    @Override
323631dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    public void scrollRight() {
3237d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka        if (!isSmall() && !mIsSwitchingState) {
32380142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka            super.scrollRight();
323931dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project        }
324095bb800de9b0142bea0110b074eddbcf0e475736Adam Cohen        Folder openFolder = getOpenFolder();
324195bb800de9b0142bea0110b074eddbcf0e475736Adam Cohen        if (openFolder != null) {
324295bb800de9b0142bea0110b074eddbcf0e475736Adam Cohen            openFolder.completeDragExit();
324395bb800de9b0142bea0110b074eddbcf0e475736Adam Cohen        }
324431dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    }
3245138a04170d964da9cdec228e95b976875ae52481Karl Rosaen
32461262e369484ce7f2565655ed80e6299232c70bd7Patrick Dubroy    @Override
32473e0839e5f830ab7e64223ebe186d97729eda3e22Winson Chung    public boolean onEnterScrollArea(int x, int y, int direction) {
32481c4cf4a11f3f7f24bbf65f958fdd22295d0bbd55Winson Chung        // Ignore the scroll area if we are dragging over the hot seat
32491c4cf4a11f3f7f24bbf65f958fdd22295d0bbd55Winson Chung        if (mLauncher.getHotseat() != null) {
32501c4cf4a11f3f7f24bbf65f958fdd22295d0bbd55Winson Chung            Rect r = new Rect();
32511c4cf4a11f3f7f24bbf65f958fdd22295d0bbd55Winson Chung            mLauncher.getHotseat().getHitRect(r);
32521c4cf4a11f3f7f24bbf65f958fdd22295d0bbd55Winson Chung            if (r.contains(x, y)) {
32533e0839e5f830ab7e64223ebe186d97729eda3e22Winson Chung                return false;
32541c4cf4a11f3f7f24bbf65f958fdd22295d0bbd55Winson Chung            }
32551c4cf4a11f3f7f24bbf65f958fdd22295d0bbd55Winson Chung        }
32561c4cf4a11f3f7f24bbf65f958fdd22295d0bbd55Winson Chung
32573e0839e5f830ab7e64223ebe186d97729eda3e22Winson Chung        boolean result = false;
3258d74c984fcc61f86160476a2543faff715e3ee2fdMichael Jurka        if (!isSmall() && !mIsSwitchingState) {
3259d718d6a7ba424b600052a147e5633a201a04ccb7Michael Jurka            mInScrollArea = true;
326054fa3b95557c283976e8c1aa8a157b460b0b4513Patrick Dubroy
3261aa15ffe60e28b923ebf3e3162ce427ca6feae803Winson Chung            final int page = (mNextPage != INVALID_PAGE ? mNextPage : mCurrentPage) +
3262aa15ffe60e28b923ebf3e3162ce427ca6feae803Winson Chung                       (direction == DragController.SCROLL_LEFT ? -1 : 1);
3263c0dcf597084d00e4c23a7fea5fd0738f6c095a6bAdam Cohen            cancelFolderCreation();
326454fa3b95557c283976e8c1aa8a157b460b0b4513Patrick Dubroy
3265aa15ffe60e28b923ebf3e3162ce427ca6feae803Winson Chung            if (0 <= page && page < getChildCount()) {
3266aa15ffe60e28b923ebf3e3162ce427ca6feae803Winson Chung                CellLayout layout = (CellLayout) getChildAt(page);
3267c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung                // Exit the current layout and mark the overlapping layout
32680207c522472d7252f146f4d39efa456ca5248c6bPatrick Dubroy                if (mDragTargetLayout != null) {
3269c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung                    mDragTargetLayout.setIsDragOverlapping(false);
32700207c522472d7252f146f4d39efa456ca5248c6bPatrick Dubroy                    mDragTargetLayout.onDragExit();
32710207c522472d7252f146f4d39efa456ca5248c6bPatrick Dubroy                }
3272c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung                mDragTargetLayout = layout;
3273c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung                mDragTargetLayout.setIsDragOverlapping(true);
327470b9530f3147663d38875260b48d931793b7d378Patrick Dubroy
3275c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung                // Workspace is responsible for drawing the edge glow on adjacent pages,
3276c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung                // so we need to redraw the workspace when this may have changed.
3277c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung                invalidate();
32783e0839e5f830ab7e64223ebe186d97729eda3e22Winson Chung                result = true;
3279c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung            }
328070b9530f3147663d38875260b48d931793b7d378Patrick Dubroy        }
32813e0839e5f830ab7e64223ebe186d97729eda3e22Winson Chung        return result;
328208ae2ec4847a971ad1b19c163e3a0d6307a8ed72Patrick Dubroy    }
328308ae2ec4847a971ad1b19c163e3a0d6307a8ed72Patrick Dubroy
32841262e369484ce7f2565655ed80e6299232c70bd7Patrick Dubroy    @Override
32853e0839e5f830ab7e64223ebe186d97729eda3e22Winson Chung    public boolean onExitScrollArea() {
32863e0839e5f830ab7e64223ebe186d97729eda3e22Winson Chung        boolean result = false;
3287d718d6a7ba424b600052a147e5633a201a04ccb7Michael Jurka        if (mInScrollArea) {
3288c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung            if (mDragTargetLayout != null) {
3289c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung                mDragTargetLayout.setIsDragOverlapping(false);
3290c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung                // Workspace is responsible for drawing the edge glow on adjacent pages,
3291c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung                // so we need to redraw the workspace when this may have changed.
3292c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung                invalidate();
3293c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung            }
32948a18afc4aa7217e293e0e96a23ac1cedaabc3738Adam Cohen            if (mDragTargetLayout != null && mDragHasEnteredWorkspace) {
32958a18afc4aa7217e293e0e96a23ac1cedaabc3738Adam Cohen                // Unmark the overlapping layout and re-enter the current layout
32968a18afc4aa7217e293e0e96a23ac1cedaabc3738Adam Cohen                mDragTargetLayout = getCurrentDropLayout();
32978a18afc4aa7217e293e0e96a23ac1cedaabc3738Adam Cohen                mDragTargetLayout.onDragEnter();
32988a18afc4aa7217e293e0e96a23ac1cedaabc3738Adam Cohen            }
32998a18afc4aa7217e293e0e96a23ac1cedaabc3738Adam Cohen            result = true;
3300c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung            mInScrollArea = false;
3301c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung        }
33023e0839e5f830ab7e64223ebe186d97729eda3e22Winson Chung        return result;
3303c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung    }
3304c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung
3305c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung    private void onResetScrollArea() {
3306c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung        if (mDragTargetLayout != null) {
3307c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung            // Unmark the overlapping layout
3308c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung            mDragTargetLayout.setIsDragOverlapping(false);
3309c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung
3310c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung            // Workspace is responsible for drawing the edge glow on adjacent pages,
3311c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung            // so we need to redraw the workspace when this may have changed.
3312c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung            invalidate();
33131262e369484ce7f2565655ed80e6299232c70bd7Patrick Dubroy        }
3314c07918d0053fc7d2a19d7b013565a5d2e7d4af51Winson Chung        mInScrollArea = false;
33151262e369484ce7f2565655ed80e6299232c70bd7Patrick Dubroy    }
33161262e369484ce7f2565655ed80e6299232c70bd7Patrick Dubroy
33173d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung    /**
33183d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung     * Returns a specific CellLayout
33193d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung     */
33203d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung    CellLayout getParentCellLayoutForView(View v) {
33213d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung        ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts();
33223d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung        for (CellLayout layout : layouts) {
33233d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung            if (layout.getChildrenLayout().indexOfChild(v) > -1) {
33243d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                return layout;
33253d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung            }
33263d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung        }
33273d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung        return null;
33283d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung    }
33293d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung
33303d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung    /**
33313d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung     * Returns a list of all the CellLayouts in the workspace.
33323d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung     */
33333d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung    ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() {
33343d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung        ArrayList<CellLayout> layouts = new ArrayList<CellLayout>();
33353d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung        int screenCount = getChildCount();
33363d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung        for (int screen = 0; screen < screenCount; screen++) {
33373d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung            layouts.add(((CellLayout) getChildAt(screen)));
33383d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung        }
33393d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung        if (mLauncher.getHotseat() != null) {
33403d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung            layouts.add(mLauncher.getHotseat().getLayout());
33413d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung        }
33423d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung        return layouts;
33433d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung    }
33443d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung
33453d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung    /**
33463d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung     * We should only use this to search for specific children.  Do not use this method to modify
33473d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung     * CellLayoutChildren directly.
33483d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung     */
33493d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung    ArrayList<CellLayoutChildren> getWorkspaceAndHotseatCellLayoutChildren() {
33503d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung        ArrayList<CellLayoutChildren> childrenLayouts = new ArrayList<CellLayoutChildren>();
33513d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung        int screenCount = getChildCount();
335231dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project        for (int screen = 0; screen < screenCount; screen++) {
33533d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung            childrenLayouts.add(((CellLayout) getChildAt(screen)).getChildrenLayout());
33543d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung        }
33553d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung        if (mLauncher.getHotseat() != null) {
33563d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung            childrenLayouts.add(mLauncher.getHotseat().getLayout().getChildrenLayout());
33573d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung        }
33583d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung        return childrenLayouts;
33593d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung    }
33603d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung
33613d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung    public Folder getFolderForTag(Object tag) {
33623d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung        ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren();
33633d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung        for (CellLayoutChildren layout: childrenLayouts) {
33643d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung            int count = layout.getChildCount();
336531dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project            for (int i = 0; i < count; i++) {
33663d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                View child = layout.getChildAt(i);
33673d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                if (child instanceof Folder) {
336831dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project                    Folder f = (Folder) child;
3369aafa03cbb925c74be1c13f8bb99d928be429e62fWinson Chung                    if (f.getInfo() == tag && f.getInfo().opened) {
337031dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project                        return f;
337131dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project                    }
337231dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project                }
337331dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project            }
337431dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project        }
337531dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project        return null;
337631dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    }
337731dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project
337831dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    public View getViewForTag(Object tag) {
33793d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung        ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren();
33803d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung        for (CellLayoutChildren layout: childrenLayouts) {
33813d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung            int count = layout.getChildCount();
338231dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project            for (int i = 0; i < count; i++) {
33833d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung                View child = layout.getChildAt(i);
338431dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project                if (child.getTag() == tag) {
338531dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project                    return child;
338631dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project                }
338731dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project            }
338831dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project        }
338931dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project        return null;
339031dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    }
339131dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project
3392df0353815c629fc678824b07a234b89a1ff94208Adam Cohen    void clearDropTargets() {
33933d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung        ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren();
33943d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung        for (CellLayoutChildren layout: childrenLayouts) {
3395df0353815c629fc678824b07a234b89a1ff94208Adam Cohen            int childCount = layout.getChildCount();
3396df0353815c629fc678824b07a234b89a1ff94208Adam Cohen            for (int j = 0; j < childCount; j++) {
3397df0353815c629fc678824b07a234b89a1ff94208Adam Cohen                View v = layout.getChildAt(j);
3398df0353815c629fc678824b07a234b89a1ff94208Adam Cohen                if (v instanceof DropTarget) {
3399df0353815c629fc678824b07a234b89a1ff94208Adam Cohen                    mDragController.removeDropTarget((DropTarget) v);
3400df0353815c629fc678824b07a234b89a1ff94208Adam Cohen                }
3401df0353815c629fc678824b07a234b89a1ff94208Adam Cohen            }
3402df0353815c629fc678824b07a234b89a1ff94208Adam Cohen        }
3403df0353815c629fc678824b07a234b89a1ff94208Adam Cohen    }
340431dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project
340564e6be78dc72e1a89fe8fb95c502586f9260df28Joe Onorato    void removeItems(final ArrayList<ApplicationInfo> apps) {
3406629de3ef739883c0962423cc0c3a26299f162d3dRomain Guy        final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext());
3407574d20ec84551370987dde530c27ec493bdef564Romain Guy
340864e6be78dc72e1a89fe8fb95c502586f9260df28Joe Onorato        final HashSet<String> packageNames = new HashSet<String>();
340964e6be78dc72e1a89fe8fb95c502586f9260df28Joe Onorato        final int appCount = apps.size();
341064e6be78dc72e1a89fe8fb95c502586f9260df28Joe Onorato        for (int i = 0; i < appCount; i++) {
341164e6be78dc72e1a89fe8fb95c502586f9260df28Joe Onorato            packageNames.add(apps.get(i).componentName.getPackageName());
341264e6be78dc72e1a89fe8fb95c502586f9260df28Joe Onorato        }
341364e6be78dc72e1a89fe8fb95c502586f9260df28Joe Onorato
34143d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung        ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts();
34153d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung        for (final CellLayout layoutParent: cellLayouts) {
34167a25a9e39a13df706daeb0a4a82273f3c5151997Winson Chung            final ViewGroup layout = layoutParent.getChildrenLayout();
3417629de3ef739883c0962423cc0c3a26299f162d3dRomain Guy
3418629de3ef739883c0962423cc0c3a26299f162d3dRomain Guy            // Avoid ANRs by treating each screen separately
3419629de3ef739883c0962423cc0c3a26299f162d3dRomain Guy            post(new Runnable() {
3420629de3ef739883c0962423cc0c3a26299f162d3dRomain Guy                public void run() {
3421629de3ef739883c0962423cc0c3a26299f162d3dRomain Guy                    final ArrayList<View> childrenToRemove = new ArrayList<View>();
3422629de3ef739883c0962423cc0c3a26299f162d3dRomain Guy                    childrenToRemove.clear();
3423aafa03cbb925c74be1c13f8bb99d928be429e62fWinson Chung
3424629de3ef739883c0962423cc0c3a26299f162d3dRomain Guy                    int childCount = layout.getChildCount();
3425629de3ef739883c0962423cc0c3a26299f162d3dRomain Guy                    for (int j = 0; j < childCount; j++) {
3426629de3ef739883c0962423cc0c3a26299f162d3dRomain Guy                        final View view = layout.getChildAt(j);
3427629de3ef739883c0962423cc0c3a26299f162d3dRomain Guy                        Object tag = view.getTag();
3428aafa03cbb925c74be1c13f8bb99d928be429e62fWinson Chung
34290589f0f66ce498512c6ee47482c649d88294c9d0Joe Onorato                        if (tag instanceof ShortcutInfo) {
34300589f0f66ce498512c6ee47482c649d88294c9d0Joe Onorato                            final ShortcutInfo info = (ShortcutInfo) tag;
3431629de3ef739883c0962423cc0c3a26299f162d3dRomain Guy                            final Intent intent = info.intent;
3432629de3ef739883c0962423cc0c3a26299f162d3dRomain Guy                            final ComponentName name = intent.getComponent();
3433aafa03cbb925c74be1c13f8bb99d928be429e62fWinson Chung
343464e6be78dc72e1a89fe8fb95c502586f9260df28Joe Onorato                            if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) {
343564e6be78dc72e1a89fe8fb95c502586f9260df28Joe Onorato                                for (String packageName: packageNames) {
343664e6be78dc72e1a89fe8fb95c502586f9260df28Joe Onorato                                    if (packageName.equals(name.getPackageName())) {
343764e6be78dc72e1a89fe8fb95c502586f9260df28Joe Onorato                                        LauncherModel.deleteItemFromDatabase(mLauncher, info);
343864e6be78dc72e1a89fe8fb95c502586f9260df28Joe Onorato                                        childrenToRemove.add(view);
343964e6be78dc72e1a89fe8fb95c502586f9260df28Joe Onorato                                    }
344064e6be78dc72e1a89fe8fb95c502586f9260df28Joe Onorato                                }
3441629de3ef739883c0962423cc0c3a26299f162d3dRomain Guy                            }
3442df2cc41acbfacd576f99483a4af1cda32ebd3d09Adam Cohen                        } else if (tag instanceof FolderInfo) {
3443df2cc41acbfacd576f99483a4af1cda32ebd3d09Adam Cohen                            final FolderInfo info = (FolderInfo) tag;
34440589f0f66ce498512c6ee47482c649d88294c9d0Joe Onorato                            final ArrayList<ShortcutInfo> contents = info.contents;
3445629de3ef739883c0962423cc0c3a26299f162d3dRomain Guy                            final int contentsCount = contents.size();
3446df1e4e868a1970b756486dadd652651d40276d36Adam Cohen                            final ArrayList<ShortcutInfo> appsToRemoveFromFolder =
3447df1e4e868a1970b756486dadd652651d40276d36Adam Cohen                                    new ArrayList<ShortcutInfo>();
3448aafa03cbb925c74be1c13f8bb99d928be429e62fWinson Chung
3449629de3ef739883c0962423cc0c3a26299f162d3dRomain Guy                            for (int k = 0; k < contentsCount; k++) {
34500589f0f66ce498512c6ee47482c649d88294c9d0Joe Onorato                                final ShortcutInfo appInfo = contents.get(k);
3451629de3ef739883c0962423cc0c3a26299f162d3dRomain Guy                                final Intent intent = appInfo.intent;
3452629de3ef739883c0962423cc0c3a26299f162d3dRomain Guy                                final ComponentName name = intent.getComponent();
3453aafa03cbb925c74be1c13f8bb99d928be429e62fWinson Chung
345464e6be78dc72e1a89fe8fb95c502586f9260df28Joe Onorato                                if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) {
345564e6be78dc72e1a89fe8fb95c502586f9260df28Joe Onorato                                    for (String packageName: packageNames) {
345664e6be78dc72e1a89fe8fb95c502586f9260df28Joe Onorato                                        if (packageName.equals(name.getPackageName())) {
3457df1e4e868a1970b756486dadd652651d40276d36Adam Cohen                                            appsToRemoveFromFolder.add(appInfo);
345864e6be78dc72e1a89fe8fb95c502586f9260df28Joe Onorato                                        }
345964e6be78dc72e1a89fe8fb95c502586f9260df28Joe Onorato                                    }
3460629de3ef739883c0962423cc0c3a26299f162d3dRomain Guy                                }
3461629de3ef739883c0962423cc0c3a26299f162d3dRomain Guy                            }
3462df1e4e868a1970b756486dadd652651d40276d36Adam Cohen                            for (ShortcutInfo item: appsToRemoveFromFolder) {
3463df1e4e868a1970b756486dadd652651d40276d36Adam Cohen                                info.remove(item);
3464df1e4e868a1970b756486dadd652651d40276d36Adam Cohen                                LauncherModel.deleteItemFromDatabase(mLauncher, item);
3465629de3ef739883c0962423cc0c3a26299f162d3dRomain Guy                            }
3466629de3ef739883c0962423cc0c3a26299f162d3dRomain Guy                        } else if (tag instanceof LauncherAppWidgetInfo) {
3467629de3ef739883c0962423cc0c3a26299f162d3dRomain Guy                            final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag;
3468629de3ef739883c0962423cc0c3a26299f162d3dRomain Guy                            final AppWidgetProviderInfo provider =
3469629de3ef739883c0962423cc0c3a26299f162d3dRomain Guy                                    widgets.getAppWidgetInfo(info.appWidgetId);
3470e1cc6c3745c9ba721b6ab888d74c9d9e1d13ea6aDaniel Sandler                            if (provider != null) {
347164e6be78dc72e1a89fe8fb95c502586f9260df28Joe Onorato                                for (String packageName: packageNames) {
347264e6be78dc72e1a89fe8fb95c502586f9260df28Joe Onorato                                    if (packageName.equals(provider.provider.getPackageName())) {
347364e6be78dc72e1a89fe8fb95c502586f9260df28Joe Onorato                                        LauncherModel.deleteItemFromDatabase(mLauncher, info);
3474aafa03cbb925c74be1c13f8bb99d928be429e62fWinson Chung                                        childrenToRemove.add(view);
347564e6be78dc72e1a89fe8fb95c502586f9260df28Joe Onorato                                    }
347664e6be78dc72e1a89fe8fb95c502586f9260df28Joe Onorato                                }
3477629de3ef739883c0962423cc0c3a26299f162d3dRomain Guy                            }
3478574d20ec84551370987dde530c27ec493bdef564Romain Guy                        }
3479574d20ec84551370987dde530c27ec493bdef564Romain Guy                    }
3480aafa03cbb925c74be1c13f8bb99d928be429e62fWinson Chung
3481629de3ef739883c0962423cc0c3a26299f162d3dRomain Guy                    childCount = childrenToRemove.size();
3482629de3ef739883c0962423cc0c3a26299f162d3dRomain Guy                    for (int j = 0; j < childCount; j++) {
3483629de3ef739883c0962423cc0c3a26299f162d3dRomain Guy                        View child = childrenToRemove.get(j);
34847a25a9e39a13df706daeb0a4a82273f3c5151997Winson Chung                        // Note: We can not remove the view directly from CellLayoutChildren as this
34857a25a9e39a13df706daeb0a4a82273f3c5151997Winson Chung                        // does not re-mark the spaces as unoccupied.
34867a25a9e39a13df706daeb0a4a82273f3c5151997Winson Chung                        layoutParent.removeViewInLayout(child);
3487629de3ef739883c0962423cc0c3a26299f162d3dRomain Guy                        if (child instanceof DropTarget) {
3488629de3ef739883c0962423cc0c3a26299f162d3dRomain Guy                            mDragController.removeDropTarget((DropTarget)child);
3489629de3ef739883c0962423cc0c3a26299f162d3dRomain Guy                        }
3490574d20ec84551370987dde530c27ec493bdef564Romain Guy                    }
3491aafa03cbb925c74be1c13f8bb99d928be429e62fWinson Chung
3492629de3ef739883c0962423cc0c3a26299f162d3dRomain Guy                    if (childCount > 0) {
3493629de3ef739883c0962423cc0c3a26299f162d3dRomain Guy                        layout.requestLayout();
3494629de3ef739883c0962423cc0c3a26299f162d3dRomain Guy                        layout.invalidate();
34955c16f3ecd6b47bff3abbe40deb3d39c66a3b0012Romain Guy                    }
349631dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project                }
3497629de3ef739883c0962423cc0c3a26299f162d3dRomain Guy            });
349831dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project        }
349931dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    }
3500f96811cdf564469a7a654a0c876288c9fd14f35eThe Android Open Source Project
350164e6be78dc72e1a89fe8fb95c502586f9260df28Joe Onorato    void updateShortcuts(ArrayList<ApplicationInfo> apps) {
35023d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung        ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren();
35033d503fbd9468fb2b9fa645f4f7b91e11229edbfaWinson Chung        for (CellLayoutChildren layout: childrenLayouts) {
3504f96811cdf564469a7a654a0c876288c9fd14f35eThe Android Open Source Project            int childCount = layout.getChildCount();
3505f96811cdf564469a7a654a0c876288c9fd14f35eThe Android Open Source Project            for (int j = 0; j < childCount; j++) {
3506f96811cdf564469a7a654a0c876288c9fd14f35eThe Android Open Source Project                final View view = layout.getChildAt(j);
3507f96811cdf564469a7a654a0c876288c9fd14f35eThe Android Open Source Project                Object tag = view.getTag();
35080589f0f66ce498512c6ee47482c649d88294c9d0Joe Onorato                if (tag instanceof ShortcutInfo) {
35090589f0f66ce498512c6ee47482c649d88294c9d0Joe Onorato                    ShortcutInfo info = (ShortcutInfo)tag;
3510f96811cdf564469a7a654a0c876288c9fd14f35eThe Android Open Source Project                    // We need to check for ACTION_MAIN otherwise getComponent() might
3511f96811cdf564469a7a654a0c876288c9fd14f35eThe Android Open Source Project                    // return null for some shortcuts (for instance, for shortcuts to
3512f96811cdf564469a7a654a0c876288c9fd14f35eThe Android Open Source Project                    // web pages.)
3513f96811cdf564469a7a654a0c876288c9fd14f35eThe Android Open Source Project                    final Intent intent = info.intent;
3514f96811cdf564469a7a654a0c876288c9fd14f35eThe Android Open Source Project                    final ComponentName name = intent.getComponent();
3515f96811cdf564469a7a654a0c876288c9fd14f35eThe Android Open Source Project                    if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION &&
351664e6be78dc72e1a89fe8fb95c502586f9260df28Joe Onorato                            Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) {
351764e6be78dc72e1a89fe8fb95c502586f9260df28Joe Onorato                        final int appCount = apps.size();
3518aafa03cbb925c74be1c13f8bb99d928be429e62fWinson Chung                        for (int k = 0; k < appCount; k++) {
351964e6be78dc72e1a89fe8fb95c502586f9260df28Joe Onorato                            ApplicationInfo app = apps.get(k);
352064e6be78dc72e1a89fe8fb95c502586f9260df28Joe Onorato                            if (app.componentName.equals(name)) {
352164e6be78dc72e1a89fe8fb95c502586f9260df28Joe Onorato                                info.setIcon(mIconCache.getIcon(info.intent));
352264e6be78dc72e1a89fe8fb95c502586f9260df28Joe Onorato                                ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null,
352364e6be78dc72e1a89fe8fb95c502586f9260df28Joe Onorato                                        new FastBitmapDrawable(info.getIcon(mIconCache)),
352464e6be78dc72e1a89fe8fb95c502586f9260df28Joe Onorato                                        null, null);
352564e6be78dc72e1a89fe8fb95c502586f9260df28Joe Onorato                                }
352664e6be78dc72e1a89fe8fb95c502586f9260df28Joe Onorato                        }
3527f96811cdf564469a7a654a0c876288c9fd14f35eThe Android Open Source Project                    }
3528f96811cdf564469a7a654a0c876288c9fd14f35eThe Android Open Source Project                }
3529f96811cdf564469a7a654a0c876288c9fd14f35eThe Android Open Source Project            }
3530f96811cdf564469a7a654a0c876288c9fd14f35eThe Android Open Source Project        }
3531f96811cdf564469a7a654a0c876288c9fd14f35eThe Android Open Source Project    }
3532f96811cdf564469a7a654a0c876288c9fd14f35eThe Android Open Source Project
353314f122bf847e50a3e7730ccbe57abc25d086a01bJoe Onorato    void moveToDefaultScreen(boolean animate) {
3534de1af7661548692d370518528ff91c7422b9c8aeWinson Chung        if (!isSmall()) {
3535de1af7661548692d370518528ff91c7422b9c8aeWinson Chung            if (animate) {
3536de1af7661548692d370518528ff91c7422b9c8aeWinson Chung                snapToPage(mDefaultPage);
3537de1af7661548692d370518528ff91c7422b9c8aeWinson Chung            } else {
3538de1af7661548692d370518528ff91c7422b9c8aeWinson Chung                setCurrentPage(mDefaultPage);
3539de1af7661548692d370518528ff91c7422b9c8aeWinson Chung            }
3540c45b16862918a0c6c253bba12032165b030565afJoe Onorato        }
35410142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka        getChildAt(mDefaultPage).requestFocus();
354231dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    }
354331dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project
35440142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka    @Override
35450142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka    public void syncPages() {
35460142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka    }
354731dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project
35480142d49e1378a7155bcca1fb59965d9e73016dbcMichael Jurka    @Override
3549f314b0eab03bb354c14b6c89f694a6685bd246d9Winson Chung    public void syncPageItems(int page, boolean immediate) {
355031dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    }
35516a0f57dfafced837a2a282d8feec28d5418be3b9Winson Chung
35526a0f57dfafced837a2a282d8feec28d5418be3b9Winson Chung    @Override
35536a0f57dfafced837a2a282d8feec28d5418be3b9Winson Chung    protected String getCurrentPageDescription() {
35546a0f57dfafced837a2a282d8feec28d5418be3b9Winson Chung        int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage;
35556a0f57dfafced837a2a282d8feec28d5418be3b9Winson Chung        return String.format(mContext.getString(R.string.workspace_scroll_format),
35566a0f57dfafced837a2a282d8feec28d5418be3b9Winson Chung                page + 1, getChildCount());
35576a0f57dfafced837a2a282d8feec28d5418be3b9Winson Chung    }
35588dfcba4af7a7ece09e8c7d96053e54f3a383e905Adam Cohen
35598dfcba4af7a7ece09e8c7d96053e54f3a383e905Adam Cohen    public void getLocationInDragLayer(int[] loc) {
35608dfcba4af7a7ece09e8c7d96053e54f3a383e905Adam Cohen        mLauncher.getDragLayer().getLocationInDragLayer(this, loc);
35618dfcba4af7a7ece09e8c7d96053e54f3a383e905Adam Cohen    }
356232174c878c77b4e0f13449f4c26ff6b487bc7ca6Winson Chung
356321b411074e39fd10cbc8dd0220bb159da4af2c76Adam Cohen    void setFadeForOverScroll(float fade) {
356421b411074e39fd10cbc8dd0220bb159da4af2c76Adam Cohen        if (!isScrollingIndicatorEnabled()) return;
356521b411074e39fd10cbc8dd0220bb159da4af2c76Adam Cohen
356621b411074e39fd10cbc8dd0220bb159da4af2c76Adam Cohen        mOverscrollFade = fade;
356721b411074e39fd10cbc8dd0220bb159da4af2c76Adam Cohen        float reducedFade = 0.5f + 0.5f * (1 - fade);
356821b411074e39fd10cbc8dd0220bb159da4af2c76Adam Cohen        final ViewGroup parent = (ViewGroup) getParent();
3569e96e5cb768fcc6f1211c8c31fa2da4dcd4e465ccWinson Chung        final ImageView qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider));
357021b411074e39fd10cbc8dd0220bb159da4af2c76Adam Cohen        final ImageView dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider));
3571afaa05014e0bf3ed1192f9ddec2af4283bc50248Michael Jurka        final View scrollIndicator = getScrollingIndicator();
357221b411074e39fd10cbc8dd0220bb159da4af2c76Adam Cohen
357321b411074e39fd10cbc8dd0220bb159da4af2c76Adam Cohen        cancelScrollingIndicatorAnimations();
3574e96e5cb768fcc6f1211c8c31fa2da4dcd4e465ccWinson Chung        if (qsbDivider != null) qsbDivider.setAlpha(reducedFade);
3575e96e5cb768fcc6f1211c8c31fa2da4dcd4e465ccWinson Chung        if (dockDivider != null) dockDivider.setAlpha(reducedFade);
357621b411074e39fd10cbc8dd0220bb159da4af2c76Adam Cohen        scrollIndicator.setAlpha(1 - fade);
357721b411074e39fd10cbc8dd0220bb159da4af2c76Adam Cohen    }
357831dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project}
3579