DragLayer.java revision e22172537b9235a5ba41b3054677dd7ed6d89f02
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
17fedca43d396d6fd7c46fbb2f37dfa7cfe3b31834Vadim Tryshevpackage com.android.launcher3.dragndrop;
1831dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project
19716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohenimport android.animation.Animator;
20716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohenimport android.animation.AnimatorListenerAdapter;
21716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohenimport android.animation.TimeInterpolator;
22716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohenimport android.animation.ValueAnimator;
23716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohenimport android.animation.ValueAnimator.AnimatorUpdateListener;
2431dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Projectimport android.content.Context;
25716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohenimport android.content.res.Resources;
26360e63fd3e77247002b86da2a77bd8dfe8c8a807Winson Chungimport android.graphics.Canvas;
270fa93bc5c65a2d7d5e5f4e798499903759c48cc5Sunny Goyalimport android.graphics.Color;
286788269814a678af976dfc7d6135993e172ce586Adam Cohenimport android.graphics.Rect;
2995cdb3a0211650e76adb451588ce89fd585b178fTony Wickhamimport android.graphics.Region;
30360e63fd3e77247002b86da2a77bd8dfe8c8a807Winson Chungimport android.graphics.drawable.Drawable;
3131dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Projectimport android.util.AttributeSet;
32e22172537b9235a5ba41b3054677dd7ed6d89f02Tony Wickhamimport android.util.Log;
33d6c8e7eeb13094ea1349897663ae28d8a3bf2773Vadim Tryshevimport android.view.DragEvent;
3426279c6d0917015eb4e6de0743b79edeea25f9bcDave Hawkeyimport android.view.KeyEvent;
3526279c6d0917015eb4e6de0743b79edeea25f9bcDave Hawkeyimport android.view.MotionEvent;
3626279c6d0917015eb4e6de0743b79edeea25f9bcDave Hawkeyimport android.view.View;
3726279c6d0917015eb4e6de0743b79edeea25f9bcDave Hawkeyimport android.view.ViewGroup;
383371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohenimport android.view.accessibility.AccessibilityEvent;
393371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohenimport android.view.accessibility.AccessibilityManager;
40716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohenimport android.view.animation.DecelerateInterpolator;
413e8f811f31a2275e778244427271f77f4116c08bAdam Cohenimport android.view.animation.Interpolator;
4231dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Projectimport android.widget.FrameLayout;
43ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohenimport android.widget.TextView;
4431dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project
45fedca43d396d6fd7c46fbb2f37dfa7cfe3b31834Vadim Tryshevimport com.android.launcher3.AppWidgetResizeFrame;
46fedca43d396d6fd7c46fbb2f37dfa7cfe3b31834Vadim Tryshevimport com.android.launcher3.CellLayout;
47fedca43d396d6fd7c46fbb2f37dfa7cfe3b31834Vadim Tryshevimport com.android.launcher3.InsettableFrameLayout;
48fedca43d396d6fd7c46fbb2f37dfa7cfe3b31834Vadim Tryshevimport com.android.launcher3.ItemInfo;
49fedca43d396d6fd7c46fbb2f37dfa7cfe3b31834Vadim Tryshevimport com.android.launcher3.Launcher;
50fedca43d396d6fd7c46fbb2f37dfa7cfe3b31834Vadim Tryshevimport com.android.launcher3.LauncherAppState;
51fedca43d396d6fd7c46fbb2f37dfa7cfe3b31834Vadim Tryshevimport com.android.launcher3.LauncherAppWidgetHostView;
52dadb304b4682998c43b9c07bef45b9a9380f3287Tony Wickhamimport com.android.launcher3.PinchToOverviewListener;
53f9c184a619e4e4b82cf9e0bf318ca6d8deaaaee7Adam Cohenimport com.android.launcher3.R;
54fedca43d396d6fd7c46fbb2f37dfa7cfe3b31834Vadim Tryshevimport com.android.launcher3.SearchDropTargetBar;
55fedca43d396d6fd7c46fbb2f37dfa7cfe3b31834Vadim Tryshevimport com.android.launcher3.ShortcutAndWidgetContainer;
56fedca43d396d6fd7c46fbb2f37dfa7cfe3b31834Vadim Tryshevimport com.android.launcher3.Utilities;
57fedca43d396d6fd7c46fbb2f37dfa7cfe3b31834Vadim Tryshevimport com.android.launcher3.Workspace;
5883a8f042adda926489494dff217c15ab696139b4Sunny Goyalimport com.android.launcher3.accessibility.LauncherAccessibilityDelegate;
599c43182ff1d095b1bbaacedefe6e0f4c2deb17e3Tony Wickhamimport com.android.launcher3.config.FeatureFlags;
60261194387beebaa7927ec4e310274218b651494dSunny Goyalimport com.android.launcher3.folder.Folder;
61261194387beebaa7927ec4e310274218b651494dSunny Goyalimport com.android.launcher3.folder.FolderIcon;
62091440a9cb9d4f42406631004aa484cbb79214caAdam Cohenimport com.android.launcher3.util.Thunk;
63bc927f9c24001e250622ca9a2547ee5b65baef58Adam Cohen
641d9af7d1e75bad13bb10ad37f5900ed59882622eAdam Cohenimport java.util.ArrayList;
656788269814a678af976dfc7d6135993e172ce586Adam Cohen
6631dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project/**
670e26059548e429e5d1c973bebe4c561bead2926fMichael Jurka * A ViewGroup that coordinates dragging across its descendants
6831dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project */
69a6d0492e5f0dd4e1b43d4034a770241dc65f8f8cAdam Cohenpublic class DragLayer extends InsettableFrameLayout {
700fa93bc5c65a2d7d5e5f4e798499903759c48cc5Sunny Goyal
71b135956e95d2d7479290af89d618892ed0e7327dSunny Goyal    public static final int ANIMATION_END_DISAPPEAR = 0;
72b135956e95d2d7479290af89d618892ed0e7327dSunny Goyal    public static final int ANIMATION_END_REMAIN_VISIBLE = 2;
73b135956e95d2d7479290af89d618892ed0e7327dSunny Goyal
740fa93bc5c65a2d7d5e5f4e798499903759c48cc5Sunny Goyal    // Scrim color without any alpha component.
750fa93bc5c65a2d7d5e5f4e798499903759c48cc5Sunny Goyal    private static final int SCRIM_COLOR = Color.BLACK & 0x00FFFFFF;
760fa93bc5c65a2d7d5e5f4e798499903759c48cc5Sunny Goyal
77b135956e95d2d7479290af89d618892ed0e7327dSunny Goyal    private final int[] mTmpXY = new int[2];
78b135956e95d2d7479290af89d618892ed0e7327dSunny Goyal
79091440a9cb9d4f42406631004aa484cbb79214caAdam Cohen    @Thunk DragController mDragController;
8031dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project
81716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohen    private int mXDown, mYDown;
82716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohen    private Launcher mLauncher;
83716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohen
846788269814a678af976dfc7d6135993e172ce586Adam Cohen    // Variables relating to resizing widgets
85b135956e95d2d7479290af89d618892ed0e7327dSunny Goyal    private final ArrayList<AppWidgetResizeFrame> mResizeFrames = new ArrayList<>();
867066003b2032a49ae5e59dab9b706259bdeb7e6eSunny Goyal    private final boolean mIsRtl;
876788269814a678af976dfc7d6135993e172ce586Adam Cohen    private AppWidgetResizeFrame mCurrentResizeFrame;
88716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohen
89716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohen    // Variables relating to animation of views after drop
90716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohen    private ValueAnimator mDropAnim = null;
91b135956e95d2d7479290af89d618892ed0e7327dSunny Goyal    private final TimeInterpolator mCubicEaseOutInterpolator = new DecelerateInterpolator(1.5f);
92091440a9cb9d4f42406631004aa484cbb79214caAdam Cohen    @Thunk DragView mDropView = null;
93091440a9cb9d4f42406631004aa484cbb79214caAdam Cohen    @Thunk int mAnchorViewInitialScrollX = 0;
94091440a9cb9d4f42406631004aa484cbb79214caAdam Cohen    @Thunk View mAnchorView = null;
958dfcba4af7a7ece09e8c7d96053e54f3a383e905Adam Cohen
963371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen    private boolean mHoverPointClosesFolder = false;
97b135956e95d2d7479290af89d618892ed0e7327dSunny Goyal    private final Rect mHitRect = new Rect();
9895cdb3a0211650e76adb451588ce89fd585b178fTony Wickham    private final Rect mHighlightRect = new Rect();
996788269814a678af976dfc7d6135993e172ce586Adam Cohen
100b0f3d74815417acc3a9d3dce90cbf34b772847f0Adam Cohen    private TouchCompleteListener mTouchCompleteListener;
101b0f3d74815417acc3a9d3dce90cbf34b772847f0Adam Cohen
102432609a246819f3cf887a80c2ae56b61fc5ca25aAdam Cohen    private View mOverlayView;
103432609a246819f3cf887a80c2ae56b61fc5ca25aAdam Cohen    private int mTopViewIndex;
1042d783ce2f4b2e507bead0d723f0edcdf902dbd46Adam Cohen    private int mChildCountOnLastUpdate = -1;
10555bd9725d5c0373b89f7b9bbd9547550ea3bbc63Jorim Jaggi
1066c5891a9fce95eee3d87823d11d21889743e9c68Adam Cohen    // Darkening scrim
1076c5891a9fce95eee3d87823d11d21889743e9c68Adam Cohen    private float mBackgroundAlpha = 0;
1086c5891a9fce95eee3d87823d11d21889743e9c68Adam Cohen
1090f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham    // Related to adjacent page hints
1100f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham    private final Rect mScrollChildPosition = new Rect();
1110f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham    private boolean mInScrollArea;
1120f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham    private boolean mShowPageHints;
1130f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham    private Drawable mLeftHoverDrawable;
1140f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham    private Drawable mRightHoverDrawable;
1150f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham    private Drawable mLeftHoverDrawableActive;
1160f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham    private Drawable mRightHoverDrawableActive;
1170f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham
118dadb304b4682998c43b9c07bef45b9a9380f3287Tony Wickham    // Related to pinch-to-go-to-overview gesture.
1199c43182ff1d095b1bbaacedefe6e0f4c2deb17e3Tony Wickham    private PinchToOverviewListener mPinchListener = null;
12031dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    /**
12131dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project     * Used to create a new DragLayer from XML.
12231dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project     *
12331dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project     * @param context The application's context.
1240e26059548e429e5d1c973bebe4c561bead2926fMichael Jurka     * @param attrs The attributes set containing the Workspace's customization values.
12531dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project     */
12631dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    public DragLayer(Context context, AttributeSet attrs) {
12731dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project        super(context, attrs);
128be62afa34d58edab0fc9ba7499f0dd543039c903Winson Chung
129be62afa34d58edab0fc9ba7499f0dd543039c903Winson Chung        // Disable multitouch across the workspace/all apps/customize tray
130be62afa34d58edab0fc9ba7499f0dd543039c903Winson Chung        setMotionEventSplittingEnabled(false);
13121b411074e39fd10cbc8dd0220bb159da4af2c76Adam Cohen        setChildrenDrawingOrderEnabled(true);
132360e63fd3e77247002b86da2a77bd8dfe8c8a807Winson Chung
1330f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham        final Resources res = getResources();
1340f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham        mLeftHoverDrawable = res.getDrawable(R.drawable.page_hover_left);
1350f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham        mRightHoverDrawable = res.getDrawable(R.drawable.page_hover_right);
1360f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham        mLeftHoverDrawableActive = res.getDrawable(R.drawable.page_hover_left_active);
1370f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham        mRightHoverDrawableActive = res.getDrawable(R.drawable.page_hover_right_active);
1380f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham        mIsRtl = Utilities.isRtl(res);
13931dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    }
14031dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project
1414c98d9235d164680186180974719f551cf935d08Winson Chung    public void setup(Launcher launcher, DragController controller) {
1424c98d9235d164680186180974719f551cf935d08Winson Chung        mLauncher = launcher;
14300acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato        mDragController = controller;
144dadb304b4682998c43b9c07bef45b9a9380f3287Tony Wickham
145e22172537b9235a5ba41b3054677dd7ed6d89f02Tony Wickham        boolean isAccessibilityEnabled = ((AccessibilityManager) mLauncher.getSystemService(
146e22172537b9235a5ba41b3054677dd7ed6d89f02Tony Wickham                Context.ACCESSIBILITY_SERVICE)).isEnabled();
147e22172537b9235a5ba41b3054677dd7ed6d89f02Tony Wickham        onAccessibilityStateChanged(isAccessibilityEnabled);
14831dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    }
14976fc085d28178a5d4fb3787ede956281a2cc3179Adam Cohen
15031dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    @Override
15131dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    public boolean dispatchKeyEvent(KeyEvent event) {
15200acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato        return mDragController.dispatchKeyEvent(event) || super.dispatchKeyEvent(event);
15331dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    }
15431dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project
155e22172537b9235a5ba41b3054677dd7ed6d89f02Tony Wickham    public void onAccessibilityStateChanged(boolean isAccessibilityEnabled) {
156e22172537b9235a5ba41b3054677dd7ed6d89f02Tony Wickham        mPinchListener = FeatureFlags.LAUNCHER3_DISABLE_PINCH_TO_OVERVIEW || isAccessibilityEnabled
157e22172537b9235a5ba41b3054677dd7ed6d89f02Tony Wickham                ? null : new PinchToOverviewListener(mLauncher);
158e22172537b9235a5ba41b3054677dd7ed6d89f02Tony Wickham    }
159e22172537b9235a5ba41b3054677dd7ed6d89f02Tony Wickham
160b670f195ffb7b4a0519fd0b337b68f7412159414Adam Cohen    public void showOverlayView(View overlayView) {
161432609a246819f3cf887a80c2ae56b61fc5ca25aAdam Cohen        LayoutParams lp = new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
162b670f195ffb7b4a0519fd0b337b68f7412159414Adam Cohen        mOverlayView = overlayView;
163b670f195ffb7b4a0519fd0b337b68f7412159414Adam Cohen        addView(overlayView, lp);
164b670f195ffb7b4a0519fd0b337b68f7412159414Adam Cohen
165b670f195ffb7b4a0519fd0b337b68f7412159414Adam Cohen        // ensure that the overlay view stays on top. we can't use drawing order for this
166b670f195ffb7b4a0519fd0b337b68f7412159414Adam Cohen        // because in API level 16 touch dispatch doesn't respect drawing order.
167b670f195ffb7b4a0519fd0b337b68f7412159414Adam Cohen        mOverlayView.bringToFront();
168432609a246819f3cf887a80c2ae56b61fc5ca25aAdam Cohen    }
169432609a246819f3cf887a80c2ae56b61fc5ca25aAdam Cohen
170432609a246819f3cf887a80c2ae56b61fc5ca25aAdam Cohen    public void dismissOverlayView() {
171432609a246819f3cf887a80c2ae56b61fc5ca25aAdam Cohen        removeView(mOverlayView);
172432609a246819f3cf887a80c2ae56b61fc5ca25aAdam Cohen    }
173432609a246819f3cf887a80c2ae56b61fc5ca25aAdam Cohen
1743371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen    private boolean isEventOverFolderTextRegion(Folder folder, MotionEvent ev) {
1753371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen        getDescendantRectRelativeToSelf(folder.getEditTextRegion(), mHitRect);
1763371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen        if (mHitRect.contains((int) ev.getX(), (int) ev.getY())) {
1773371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen            return true;
1783371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen        }
1793371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen        return false;
1803371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen    }
1813371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen
1823371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen    private boolean isEventOverFolder(Folder folder, MotionEvent ev) {
1833371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen        getDescendantRectRelativeToSelf(folder, mHitRect);
1843371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen        if (mHitRect.contains((int) ev.getX(), (int) ev.getY())) {
1853371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen            return true;
1863371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen        }
1873371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen        return false;
1883371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen    }
1893371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen
190ccc414bb1e18206d2a3d8d797070278bdb286354Sunny Goyal    private boolean isEventOverDropTargetBar(MotionEvent ev) {
191006ee269ba2e9946a83b42f96d4a0296254cba4aWinson Chung        getDescendantRectRelativeToSelf(mLauncher.getSearchDropTargetBar(), mHitRect);
192ccc414bb1e18206d2a3d8d797070278bdb286354Sunny Goyal        if (mHitRect.contains((int) ev.getX(), (int) ev.getY())) {
193ccc414bb1e18206d2a3d8d797070278bdb286354Sunny Goyal            return true;
194ccc414bb1e18206d2a3d8d797070278bdb286354Sunny Goyal        }
19534d2c915c4762a073b60bb676a9e905392e9679cTony Wickham
19634d2c915c4762a073b60bb676a9e905392e9679cTony Wickham        getDescendantRectRelativeToSelf(mLauncher.getAppInfoDropTargetBar(), mHitRect);
19734d2c915c4762a073b60bb676a9e905392e9679cTony Wickham        if (mHitRect.contains((int) ev.getX(), (int) ev.getY())) {
19834d2c915c4762a073b60bb676a9e905392e9679cTony Wickham            return true;
19934d2c915c4762a073b60bb676a9e905392e9679cTony Wickham        }
200ccc414bb1e18206d2a3d8d797070278bdb286354Sunny Goyal        return false;
201ccc414bb1e18206d2a3d8d797070278bdb286354Sunny Goyal    }
202ccc414bb1e18206d2a3d8d797070278bdb286354Sunny Goyal
20376fc085d28178a5d4fb3787ede956281a2cc3179Adam Cohen    private boolean handleTouchDown(MotionEvent ev, boolean intercept) {
2046788269814a678af976dfc7d6135993e172ce586Adam Cohen        Rect hitRect = new Rect();
2056788269814a678af976dfc7d6135993e172ce586Adam Cohen        int x = (int) ev.getX();
2066788269814a678af976dfc7d6135993e172ce586Adam Cohen        int y = (int) ev.getY();
2076788269814a678af976dfc7d6135993e172ce586Adam Cohen
2086788269814a678af976dfc7d6135993e172ce586Adam Cohen        for (AppWidgetResizeFrame child: mResizeFrames) {
2096788269814a678af976dfc7d6135993e172ce586Adam Cohen            child.getHitRect(hitRect);
2106788269814a678af976dfc7d6135993e172ce586Adam Cohen            if (hitRect.contains(x, y)) {
2116788269814a678af976dfc7d6135993e172ce586Adam Cohen                if (child.beginResizeIfPointInRegion(x - child.getLeft(), y - child.getTop())) {
2126788269814a678af976dfc7d6135993e172ce586Adam Cohen                    mCurrentResizeFrame = child;
2136788269814a678af976dfc7d6135993e172ce586Adam Cohen                    mXDown = x;
2146788269814a678af976dfc7d6135993e172ce586Adam Cohen                    mYDown = y;
2156788269814a678af976dfc7d6135993e172ce586Adam Cohen                    requestDisallowInterceptTouchEvent(true);
2166788269814a678af976dfc7d6135993e172ce586Adam Cohen                    return true;
2176788269814a678af976dfc7d6135993e172ce586Adam Cohen                }
2186788269814a678af976dfc7d6135993e172ce586Adam Cohen            }
2196788269814a678af976dfc7d6135993e172ce586Adam Cohen        }
22076fc085d28178a5d4fb3787ede956281a2cc3179Adam Cohen
2211d9af7d1e75bad13bb10ad37f5900ed59882622eAdam Cohen        Folder currentFolder = mLauncher.getWorkspace().getOpenFolder();
222424418bb50ccf5d9270650b70cc51f423da51a65Sunny Goyal        if (currentFolder != null && intercept) {
2231d9af7d1e75bad13bb10ad37f5900ed59882622eAdam Cohen            if (currentFolder.isEditingName()) {
2243371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen                if (!isEventOverFolderTextRegion(currentFolder, ev)) {
2251d9af7d1e75bad13bb10ad37f5900ed59882622eAdam Cohen                    currentFolder.dismissEditingName();
22676fc085d28178a5d4fb3787ede956281a2cc3179Adam Cohen                    return true;
2272801cafe62653131fdc9da402e5c44e5ffd0bf47Adam Cohen                }
2282801cafe62653131fdc9da402e5c44e5ffd0bf47Adam Cohen            }
22976fc085d28178a5d4fb3787ede956281a2cc3179Adam Cohen
2303371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen            if (!isEventOverFolder(currentFolder, ev)) {
231ccc414bb1e18206d2a3d8d797070278bdb286354Sunny Goyal                if (isInAccessibleDrag()) {
232ccc414bb1e18206d2a3d8d797070278bdb286354Sunny Goyal                    // Do not close the folder if in drag and drop.
233ccc414bb1e18206d2a3d8d797070278bdb286354Sunny Goyal                    if (!isEventOverDropTargetBar(ev)) {
234ccc414bb1e18206d2a3d8d797070278bdb286354Sunny Goyal                        return true;
235ccc414bb1e18206d2a3d8d797070278bdb286354Sunny Goyal                    }
236ccc414bb1e18206d2a3d8d797070278bdb286354Sunny Goyal                } else {
237ccc414bb1e18206d2a3d8d797070278bdb286354Sunny Goyal                    mLauncher.closeFolder();
238ccc414bb1e18206d2a3d8d797070278bdb286354Sunny Goyal                    return true;
239ccc414bb1e18206d2a3d8d797070278bdb286354Sunny Goyal                }
24076fc085d28178a5d4fb3787ede956281a2cc3179Adam Cohen            }
2412801cafe62653131fdc9da402e5c44e5ffd0bf47Adam Cohen        }
2426788269814a678af976dfc7d6135993e172ce586Adam Cohen        return false;
2436788269814a678af976dfc7d6135993e172ce586Adam Cohen    }
2446788269814a678af976dfc7d6135993e172ce586Adam Cohen
24531dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    @Override
24631dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    public boolean onInterceptTouchEvent(MotionEvent ev) {
247b0f3d74815417acc3a9d3dce90cbf34b772847f0Adam Cohen        int action = ev.getAction();
248b0f3d74815417acc3a9d3dce90cbf34b772847f0Adam Cohen
249b0f3d74815417acc3a9d3dce90cbf34b772847f0Adam Cohen        if (action == MotionEvent.ACTION_DOWN) {
25076fc085d28178a5d4fb3787ede956281a2cc3179Adam Cohen            if (handleTouchDown(ev, true)) {
2516788269814a678af976dfc7d6135993e172ce586Adam Cohen                return true;
252d1837cc69eb222371afdd30890f7215d117510f2Patrick Dubroy            }
253b0f3d74815417acc3a9d3dce90cbf34b772847f0Adam Cohen        } else if (action == MotionEvent.ACTION_UP || action == MotionEvent.ACTION_CANCEL) {
254b0f3d74815417acc3a9d3dce90cbf34b772847f0Adam Cohen            if (mTouchCompleteListener != null) {
255b0f3d74815417acc3a9d3dce90cbf34b772847f0Adam Cohen                mTouchCompleteListener.onTouchComplete();
256b0f3d74815417acc3a9d3dce90cbf34b772847f0Adam Cohen            }
257b0f3d74815417acc3a9d3dce90cbf34b772847f0Adam Cohen            mTouchCompleteListener = null;
2581b607ed454ed22c2fd855cb3e428376520fb2388Adam Cohen        }
2596788269814a678af976dfc7d6135993e172ce586Adam Cohen        clearAllResizeFrames();
260dadb304b4682998c43b9c07bef45b9a9380f3287Tony Wickham
2619c43182ff1d095b1bbaacedefe6e0f4c2deb17e3Tony Wickham        if (mPinchListener != null && mPinchListener.onInterceptTouchEvent(ev)) {
262c5b31965d9bcb4c9899e2d1c45b5c95c70bac9f2Tony Wickham            // Stop listening for scrolling etc. (onTouchEvent() handles the rest of the pinch.)
263c5b31965d9bcb4c9899e2d1c45b5c95c70bac9f2Tony Wickham            return true;
264dadb304b4682998c43b9c07bef45b9a9380f3287Tony Wickham        }
2654db52312c10e822162a21c60404f06f6e507f0d6Joe Onorato        return mDragController.onInterceptTouchEvent(ev);
26631dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    }
26731dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project
26831dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    @Override
2693371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen    public boolean onInterceptHoverEvent(MotionEvent ev) {
270023c71eb3b2bbe63272cb74baaf050c4188c89b0Michael Jurka        if (mLauncher == null || mLauncher.getWorkspace() == null) {
271023c71eb3b2bbe63272cb74baaf050c4188c89b0Michael Jurka            return false;
272023c71eb3b2bbe63272cb74baaf050c4188c89b0Michael Jurka        }
2733371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen        Folder currentFolder = mLauncher.getWorkspace().getOpenFolder();
2743371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen        if (currentFolder == null) {
2753371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen            return false;
2763371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen        } else {
2778b805b17158886035b38261eb611d8641701ae43Michael Jurka                AccessibilityManager accessibilityManager = (AccessibilityManager)
2788b805b17158886035b38261eb611d8641701ae43Michael Jurka                        getContext().getSystemService(Context.ACCESSIBILITY_SERVICE);
2798b805b17158886035b38261eb611d8641701ae43Michael Jurka            if (accessibilityManager.isTouchExplorationEnabled()) {
2803371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen                final int action = ev.getAction();
281ccc414bb1e18206d2a3d8d797070278bdb286354Sunny Goyal                boolean isOverFolderOrSearchBar;
2823371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen                switch (action) {
2833371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen                    case MotionEvent.ACTION_HOVER_ENTER:
284ccc414bb1e18206d2a3d8d797070278bdb286354Sunny Goyal                        isOverFolderOrSearchBar = isEventOverFolder(currentFolder, ev) ||
285ccc414bb1e18206d2a3d8d797070278bdb286354Sunny Goyal                            (isInAccessibleDrag() && isEventOverDropTargetBar(ev));
286ccc414bb1e18206d2a3d8d797070278bdb286354Sunny Goyal                        if (!isOverFolderOrSearchBar) {
2873371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen                            sendTapOutsideFolderAccessibilityEvent(currentFolder.isEditingName());
2883371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen                            mHoverPointClosesFolder = true;
2893371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen                            return true;
2903371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen                        }
291693fbc7f1737d89f11f9ab81558c109f0883ab0eMihail Dumitrescu                        mHoverPointClosesFolder = false;
292693fbc7f1737d89f11f9ab81558c109f0883ab0eMihail Dumitrescu                        break;
2933371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen                    case MotionEvent.ACTION_HOVER_MOVE:
294ccc414bb1e18206d2a3d8d797070278bdb286354Sunny Goyal                        isOverFolderOrSearchBar = isEventOverFolder(currentFolder, ev) ||
295ccc414bb1e18206d2a3d8d797070278bdb286354Sunny Goyal                            (isInAccessibleDrag() && isEventOverDropTargetBar(ev));
296ccc414bb1e18206d2a3d8d797070278bdb286354Sunny Goyal                        if (!isOverFolderOrSearchBar && !mHoverPointClosesFolder) {
2973371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen                            sendTapOutsideFolderAccessibilityEvent(currentFolder.isEditingName());
2983371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen                            mHoverPointClosesFolder = true;
2993371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen                            return true;
300ccc414bb1e18206d2a3d8d797070278bdb286354Sunny Goyal                        } else if (!isOverFolderOrSearchBar) {
3013371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen                            return true;
3023371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen                        }
303693fbc7f1737d89f11f9ab81558c109f0883ab0eMihail Dumitrescu                        mHoverPointClosesFolder = false;
3043371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen                }
3053371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen            }
3063371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen        }
3073371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen        return false;
3083371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen    }
3093371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen
3103371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen    private void sendTapOutsideFolderAccessibilityEvent(boolean isEditingName) {
3118b805b17158886035b38261eb611d8641701ae43Michael Jurka        AccessibilityManager accessibilityManager = (AccessibilityManager)
3128b805b17158886035b38261eb611d8641701ae43Michael Jurka                getContext().getSystemService(Context.ACCESSIBILITY_SERVICE);
3138b805b17158886035b38261eb611d8641701ae43Michael Jurka        if (accessibilityManager.isEnabled()) {
3143371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen            int stringId = isEditingName ? R.string.folder_tap_to_rename : R.string.folder_tap_to_close;
3153371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen            AccessibilityEvent event = AccessibilityEvent.obtain(
3163371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen                    AccessibilityEvent.TYPE_VIEW_FOCUSED);
3173371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen            onInitializeAccessibilityEvent(event);
3188b805b17158886035b38261eb611d8641701ae43Michael Jurka            event.getText().add(getContext().getString(stringId));
3198b805b17158886035b38261eb611d8641701ae43Michael Jurka            accessibilityManager.sendAccessibilityEvent(event);
3203371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen        }
32183ca480941b3dd635b62347008fc8d7859d82002Winson Chung    }
32283ca480941b3dd635b62347008fc8d7859d82002Winson Chung
323ccc414bb1e18206d2a3d8d797070278bdb286354Sunny Goyal    private boolean isInAccessibleDrag() {
324ccc414bb1e18206d2a3d8d797070278bdb286354Sunny Goyal        LauncherAccessibilityDelegate delegate = LauncherAppState
325ccc414bb1e18206d2a3d8d797070278bdb286354Sunny Goyal                .getInstance().getAccessibilityDelegate();
326ccc414bb1e18206d2a3d8d797070278bdb286354Sunny Goyal        return delegate != null && delegate.isInAccessibleDrag();
327ccc414bb1e18206d2a3d8d797070278bdb286354Sunny Goyal    }
328ccc414bb1e18206d2a3d8d797070278bdb286354Sunny Goyal
32983ca480941b3dd635b62347008fc8d7859d82002Winson Chung    @Override
33083ca480941b3dd635b62347008fc8d7859d82002Winson Chung    public boolean onRequestSendAccessibilityEvent(View child, AccessibilityEvent event) {
33183ca480941b3dd635b62347008fc8d7859d82002Winson Chung        Folder currentFolder = mLauncher.getWorkspace().getOpenFolder();
33283ca480941b3dd635b62347008fc8d7859d82002Winson Chung        if (currentFolder != null) {
33383ca480941b3dd635b62347008fc8d7859d82002Winson Chung            if (child == currentFolder) {
33483ca480941b3dd635b62347008fc8d7859d82002Winson Chung                return super.onRequestSendAccessibilityEvent(child, event);
33583ca480941b3dd635b62347008fc8d7859d82002Winson Chung            }
336ccc414bb1e18206d2a3d8d797070278bdb286354Sunny Goyal
337ccc414bb1e18206d2a3d8d797070278bdb286354Sunny Goyal            if (isInAccessibleDrag() && child instanceof SearchDropTargetBar) {
338ccc414bb1e18206d2a3d8d797070278bdb286354Sunny Goyal                return super.onRequestSendAccessibilityEvent(child, event);
339ccc414bb1e18206d2a3d8d797070278bdb286354Sunny Goyal            }
34083ca480941b3dd635b62347008fc8d7859d82002Winson Chung            // Skip propagating onRequestSendAccessibilityEvent all for other children
34183ca480941b3dd635b62347008fc8d7859d82002Winson Chung            // when a folder is open
34283ca480941b3dd635b62347008fc8d7859d82002Winson Chung            return false;
34383ca480941b3dd635b62347008fc8d7859d82002Winson Chung        }
34483ca480941b3dd635b62347008fc8d7859d82002Winson Chung        return super.onRequestSendAccessibilityEvent(child, event);
34583ca480941b3dd635b62347008fc8d7859d82002Winson Chung    }
34683ca480941b3dd635b62347008fc8d7859d82002Winson Chung
34783ca480941b3dd635b62347008fc8d7859d82002Winson Chung    @Override
34883ca480941b3dd635b62347008fc8d7859d82002Winson Chung    public void addChildrenForAccessibility(ArrayList<View> childrenForAccessibility) {
34983ca480941b3dd635b62347008fc8d7859d82002Winson Chung        Folder currentFolder = mLauncher.getWorkspace().getOpenFolder();
35083ca480941b3dd635b62347008fc8d7859d82002Winson Chung        if (currentFolder != null) {
35183ca480941b3dd635b62347008fc8d7859d82002Winson Chung            // Only add the folder as a child for accessibility when it is open
35283ca480941b3dd635b62347008fc8d7859d82002Winson Chung            childrenForAccessibility.add(currentFolder);
353ccc414bb1e18206d2a3d8d797070278bdb286354Sunny Goyal
354ccc414bb1e18206d2a3d8d797070278bdb286354Sunny Goyal            if (isInAccessibleDrag()) {
355006ee269ba2e9946a83b42f96d4a0296254cba4aWinson Chung                childrenForAccessibility.add(mLauncher.getSearchDropTargetBar());
35634d2c915c4762a073b60bb676a9e905392e9679cTony Wickham                childrenForAccessibility.add(mLauncher.getAppInfoDropTargetBar());
357ccc414bb1e18206d2a3d8d797070278bdb286354Sunny Goyal            }
35883ca480941b3dd635b62347008fc8d7859d82002Winson Chung        } else {
35983ca480941b3dd635b62347008fc8d7859d82002Winson Chung            super.addChildrenForAccessibility(childrenForAccessibility);
36083ca480941b3dd635b62347008fc8d7859d82002Winson Chung        }
3613371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen    }
3623371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen
3633371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen    @Override
3643371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen    public boolean onHoverEvent(MotionEvent ev) {
3653371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen        // If we've received this, we've already done the necessary handling
3663371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen        // in onInterceptHoverEvent. Return true to consume the event.
3673371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen        return false;
3683371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen    }
3693371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen
3703371da0159cc54ff8ae1b1b26effb96445f208d5Adam Cohen    @Override
37131dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project    public boolean onTouchEvent(MotionEvent ev) {
3726788269814a678af976dfc7d6135993e172ce586Adam Cohen        boolean handled = false;
3736788269814a678af976dfc7d6135993e172ce586Adam Cohen        int action = ev.getAction();
3746788269814a678af976dfc7d6135993e172ce586Adam Cohen
3756788269814a678af976dfc7d6135993e172ce586Adam Cohen        int x = (int) ev.getX();
3766788269814a678af976dfc7d6135993e172ce586Adam Cohen        int y = (int) ev.getY();
3776788269814a678af976dfc7d6135993e172ce586Adam Cohen
378dadb304b4682998c43b9c07bef45b9a9380f3287Tony Wickham        // This is only reached if a pinch was started from onInterceptTouchEvent();
379dadb304b4682998c43b9c07bef45b9a9380f3287Tony Wickham        // this continues sending events for it.
3809c43182ff1d095b1bbaacedefe6e0f4c2deb17e3Tony Wickham        if (mPinchListener != null) {
3819c43182ff1d095b1bbaacedefe6e0f4c2deb17e3Tony Wickham            mPinchListener.onTouchEvent(ev);
3829c43182ff1d095b1bbaacedefe6e0f4c2deb17e3Tony Wickham        }
383dadb304b4682998c43b9c07bef45b9a9380f3287Tony Wickham
384b0f3d74815417acc3a9d3dce90cbf34b772847f0Adam Cohen        if (action == MotionEvent.ACTION_DOWN) {
385b0f3d74815417acc3a9d3dce90cbf34b772847f0Adam Cohen            if (handleTouchDown(ev, false)) {
386b0f3d74815417acc3a9d3dce90cbf34b772847f0Adam Cohen                return true;
387b0f3d74815417acc3a9d3dce90cbf34b772847f0Adam Cohen            }
388b0f3d74815417acc3a9d3dce90cbf34b772847f0Adam Cohen        } else if (action == MotionEvent.ACTION_UP || action == MotionEvent.ACTION_CANCEL) {
389b0f3d74815417acc3a9d3dce90cbf34b772847f0Adam Cohen            if (mTouchCompleteListener != null) {
390b0f3d74815417acc3a9d3dce90cbf34b772847f0Adam Cohen                mTouchCompleteListener.onTouchComplete();
3916788269814a678af976dfc7d6135993e172ce586Adam Cohen            }
392b0f3d74815417acc3a9d3dce90cbf34b772847f0Adam Cohen            mTouchCompleteListener = null;
3936788269814a678af976dfc7d6135993e172ce586Adam Cohen        }
3946788269814a678af976dfc7d6135993e172ce586Adam Cohen
3956788269814a678af976dfc7d6135993e172ce586Adam Cohen        if (mCurrentResizeFrame != null) {
3966788269814a678af976dfc7d6135993e172ce586Adam Cohen            handled = true;
3976788269814a678af976dfc7d6135993e172ce586Adam Cohen            switch (action) {
3986788269814a678af976dfc7d6135993e172ce586Adam Cohen                case MotionEvent.ACTION_MOVE:
3996788269814a678af976dfc7d6135993e172ce586Adam Cohen                    mCurrentResizeFrame.visualizeResizeForDelta(x - mXDown, y - mYDown);
4006788269814a678af976dfc7d6135993e172ce586Adam Cohen                    break;
4016788269814a678af976dfc7d6135993e172ce586Adam Cohen                case MotionEvent.ACTION_CANCEL:
4026788269814a678af976dfc7d6135993e172ce586Adam Cohen                case MotionEvent.ACTION_UP:
403bebf042666cffe52039b875a549a582abd78a431Adam Cohen                    mCurrentResizeFrame.visualizeResizeForDelta(x - mXDown, y - mYDown);
404bebf042666cffe52039b875a549a582abd78a431Adam Cohen                    mCurrentResizeFrame.onTouchUp();
4056788269814a678af976dfc7d6135993e172ce586Adam Cohen                    mCurrentResizeFrame = null;
4066788269814a678af976dfc7d6135993e172ce586Adam Cohen            }
4076788269814a678af976dfc7d6135993e172ce586Adam Cohen        }
4086788269814a678af976dfc7d6135993e172ce586Adam Cohen        if (handled) return true;
4094db52312c10e822162a21c60404f06f6e507f0d6Joe Onorato        return mDragController.onTouchEvent(ev);
41091a9c9636f10f1e12cd1f660b2e330634fbdc7dcRomain Guy    }
411ea3763c2672f77539538af8cdd395ad97058eaabRomain Guy
412d6c8e7eeb13094ea1349897663ae28d8a3bf2773Vadim Tryshev    @Override
413d6c8e7eeb13094ea1349897663ae28d8a3bf2773Vadim Tryshev    public boolean onDragEvent (DragEvent event) {
414d6c8e7eeb13094ea1349897663ae28d8a3bf2773Vadim Tryshev        return mDragController.onDragEvent(event);
415d6c8e7eeb13094ea1349897663ae28d8a3bf2773Vadim Tryshev    }
416d6c8e7eeb13094ea1349897663ae28d8a3bf2773Vadim Tryshev
41735e7e64d4b98e42c760e5e91489b7014a6ba9073Adam Cohen    /**
41835e7e64d4b98e42c760e5e91489b7014a6ba9073Adam Cohen     * Determine the rect of the descendant in this DragLayer's coordinates
41935e7e64d4b98e42c760e5e91489b7014a6ba9073Adam Cohen     *
42035e7e64d4b98e42c760e5e91489b7014a6ba9073Adam Cohen     * @param descendant The descendant whose coordinates we want to find.
42135e7e64d4b98e42c760e5e91489b7014a6ba9073Adam Cohen     * @param r The rect into which to place the results.
42235e7e64d4b98e42c760e5e91489b7014a6ba9073Adam Cohen     * @return The factor by which this descendant is scaled relative to this DragLayer.
42335e7e64d4b98e42c760e5e91489b7014a6ba9073Adam Cohen     */
424ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen    public float getDescendantRectRelativeToSelf(View descendant, Rect r) {
425716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohen        mTmpXY[0] = 0;
426716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohen        mTmpXY[1] = 0;
427ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen        float scale = getDescendantCoordRelativeToSelf(descendant, mTmpXY);
4287d30a37007bac318db1c9af47a9af12d348042a5Adam Cohen
4298dfcba4af7a7ece09e8c7d96053e54f3a383e905Adam Cohen        r.set(mTmpXY[0], mTmpXY[1],
4307d30a37007bac318db1c9af47a9af12d348042a5Adam Cohen                (int) (mTmpXY[0] + scale * descendant.getMeasuredWidth()),
4317d30a37007bac318db1c9af47a9af12d348042a5Adam Cohen                (int) (mTmpXY[1] + scale * descendant.getMeasuredHeight()));
432ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen        return scale;
433716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohen    }
43476fc085d28178a5d4fb3787ede956281a2cc3179Adam Cohen
435307fe23f125cbbd5512ad8d4660025f2ab68f30bAdam Cohen    public float getLocationInDragLayer(View child, int[] loc) {
43635e7e64d4b98e42c760e5e91489b7014a6ba9073Adam Cohen        loc[0] = 0;
43735e7e64d4b98e42c760e5e91489b7014a6ba9073Adam Cohen        loc[1] = 0;
438307fe23f125cbbd5512ad8d4660025f2ab68f30bAdam Cohen        return getDescendantCoordRelativeToSelf(child, loc);
43935e7e64d4b98e42c760e5e91489b7014a6ba9073Adam Cohen    }
44035e7e64d4b98e42c760e5e91489b7014a6ba9073Adam Cohen
4417d30a37007bac318db1c9af47a9af12d348042a5Adam Cohen    public float getDescendantCoordRelativeToSelf(View descendant, int[] coord) {
4427d30a37007bac318db1c9af47a9af12d348042a5Adam Cohen        return getDescendantCoordRelativeToSelf(descendant, coord, false);
4437d30a37007bac318db1c9af47a9af12d348042a5Adam Cohen    }
4447d30a37007bac318db1c9af47a9af12d348042a5Adam Cohen
44535e7e64d4b98e42c760e5e91489b7014a6ba9073Adam Cohen    /**
44635e7e64d4b98e42c760e5e91489b7014a6ba9073Adam Cohen     * Given a coordinate relative to the descendant, find the coordinate in this DragLayer's
44735e7e64d4b98e42c760e5e91489b7014a6ba9073Adam Cohen     * coordinates.
44835e7e64d4b98e42c760e5e91489b7014a6ba9073Adam Cohen     *
44935e7e64d4b98e42c760e5e91489b7014a6ba9073Adam Cohen     * @param descendant The descendant to which the passed coordinate is relative.
45035e7e64d4b98e42c760e5e91489b7014a6ba9073Adam Cohen     * @param coord The coordinate that we want mapped.
4517d30a37007bac318db1c9af47a9af12d348042a5Adam Cohen     * @param includeRootScroll Whether or not to account for the scroll of the root descendant:
4527d30a37007bac318db1c9af47a9af12d348042a5Adam Cohen     *          sometimes this is relevant as in a child's coordinates within the root descendant.
453307fe23f125cbbd5512ad8d4660025f2ab68f30bAdam Cohen     * @return The factor by which this descendant is scaled relative to this DragLayer. Caution
454307fe23f125cbbd5512ad8d4660025f2ab68f30bAdam Cohen     *         this scale factor is assumed to be equal in X and Y, and so if at any point this
455307fe23f125cbbd5512ad8d4660025f2ab68f30bAdam Cohen     *         assumption fails, we will need to return a pair of scale factors.
45635e7e64d4b98e42c760e5e91489b7014a6ba9073Adam Cohen     */
4577d30a37007bac318db1c9af47a9af12d348042a5Adam Cohen    public float getDescendantCoordRelativeToSelf(View descendant, int[] coord,
4587d30a37007bac318db1c9af47a9af12d348042a5Adam Cohen            boolean includeRootScroll) {
459c763c4e4d28c256d1368be3fc1c4526c8b9bd232Winson Chung        return Utilities.getDescendantCoordRelativeToParent(descendant, this,
460c9ca2980983ab21fc8631c7a65399d6d9c70f39cWinson Chung                coord, includeRootScroll);
461c9ca2980983ab21fc8631c7a65399d6d9c70f39cWinson Chung    }
462c9ca2980983ab21fc8631c7a65399d6d9c70f39cWinson Chung
4637d30a37007bac318db1c9af47a9af12d348042a5Adam Cohen    /**
4647d30a37007bac318db1c9af47a9af12d348042a5Adam Cohen     * Inverse of {@link #getDescendantCoordRelativeToSelf(View, int[])}.
4657d30a37007bac318db1c9af47a9af12d348042a5Adam Cohen     */
4667d30a37007bac318db1c9af47a9af12d348042a5Adam Cohen    public float mapCoordInSelfToDescendent(View descendant, int[] coord) {
467c763c4e4d28c256d1368be3fc1c4526c8b9bd232Winson Chung        return Utilities.mapCoordInSelfToDescendent(descendant, this, coord);
46876fc085d28178a5d4fb3787ede956281a2cc3179Adam Cohen    }
46976fc085d28178a5d4fb3787ede956281a2cc3179Adam Cohen
4703e8f811f31a2275e778244427271f77f4116c08bAdam Cohen    public void getViewRectRelativeToSelf(View v, Rect r) {
4713e8f811f31a2275e778244427271f77f4116c08bAdam Cohen        int[] loc = new int[2];
4728dfcba4af7a7ece09e8c7d96053e54f3a383e905Adam Cohen        getLocationInWindow(loc);
4733e8f811f31a2275e778244427271f77f4116c08bAdam Cohen        int x = loc[0];
4743e8f811f31a2275e778244427271f77f4116c08bAdam Cohen        int y = loc[1];
475716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohen
4768dfcba4af7a7ece09e8c7d96053e54f3a383e905Adam Cohen        v.getLocationInWindow(loc);
4773e8f811f31a2275e778244427271f77f4116c08bAdam Cohen        int vX = loc[0];
4783e8f811f31a2275e778244427271f77f4116c08bAdam Cohen        int vY = loc[1];
479716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohen
4803e8f811f31a2275e778244427271f77f4116c08bAdam Cohen        int left = vX - x;
4813e8f811f31a2275e778244427271f77f4116c08bAdam Cohen        int top = vY - y;
4823e8f811f31a2275e778244427271f77f4116c08bAdam Cohen        r.set(left, top, left + v.getMeasuredWidth(), top + v.getMeasuredHeight());
483716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohen    }
484716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohen
485ea3763c2672f77539538af8cdd395ad97058eaabRomain Guy    @Override
486ea3763c2672f77539538af8cdd395ad97058eaabRomain Guy    public boolean dispatchUnhandledMove(View focused, int direction) {
487ea3763c2672f77539538af8cdd395ad97058eaabRomain Guy        return mDragController.dispatchUnhandledMove(focused, direction);
488ea3763c2672f77539538af8cdd395ad97058eaabRomain Guy    }
489120980bd00f5eecec5717f49a3d7db96571025a9Adam Cohen
490bc927f9c24001e250622ca9a2547ee5b65baef58Adam Cohen    @Override
491bc927f9c24001e250622ca9a2547ee5b65baef58Adam Cohen    public LayoutParams generateLayoutParams(AttributeSet attrs) {
492bc927f9c24001e250622ca9a2547ee5b65baef58Adam Cohen        return new LayoutParams(getContext(), attrs);
493bc927f9c24001e250622ca9a2547ee5b65baef58Adam Cohen    }
494bc927f9c24001e250622ca9a2547ee5b65baef58Adam Cohen
495bc927f9c24001e250622ca9a2547ee5b65baef58Adam Cohen    @Override
496bc927f9c24001e250622ca9a2547ee5b65baef58Adam Cohen    protected LayoutParams generateDefaultLayoutParams() {
497bc927f9c24001e250622ca9a2547ee5b65baef58Adam Cohen        return new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
498bc927f9c24001e250622ca9a2547ee5b65baef58Adam Cohen    }
499bc927f9c24001e250622ca9a2547ee5b65baef58Adam Cohen
500bc927f9c24001e250622ca9a2547ee5b65baef58Adam Cohen    // Override to allow type-checking of LayoutParams.
501bc927f9c24001e250622ca9a2547ee5b65baef58Adam Cohen    @Override
502bc927f9c24001e250622ca9a2547ee5b65baef58Adam Cohen    protected boolean checkLayoutParams(ViewGroup.LayoutParams p) {
503bc927f9c24001e250622ca9a2547ee5b65baef58Adam Cohen        return p instanceof LayoutParams;
504bc927f9c24001e250622ca9a2547ee5b65baef58Adam Cohen    }
505bc927f9c24001e250622ca9a2547ee5b65baef58Adam Cohen
506bc927f9c24001e250622ca9a2547ee5b65baef58Adam Cohen    @Override
507bc927f9c24001e250622ca9a2547ee5b65baef58Adam Cohen    protected LayoutParams generateLayoutParams(ViewGroup.LayoutParams p) {
508bc927f9c24001e250622ca9a2547ee5b65baef58Adam Cohen        return new LayoutParams(p);
509bc927f9c24001e250622ca9a2547ee5b65baef58Adam Cohen    }
510bc927f9c24001e250622ca9a2547ee5b65baef58Adam Cohen
511bc927f9c24001e250622ca9a2547ee5b65baef58Adam Cohen    public static class LayoutParams extends InsettableFrameLayout.LayoutParams {
5126788269814a678af976dfc7d6135993e172ce586Adam Cohen        public int x, y;
5136788269814a678af976dfc7d6135993e172ce586Adam Cohen        public boolean customPosition = false;
5146788269814a678af976dfc7d6135993e172ce586Adam Cohen
515bc927f9c24001e250622ca9a2547ee5b65baef58Adam Cohen        public LayoutParams(Context c, AttributeSet attrs) {
516bc927f9c24001e250622ca9a2547ee5b65baef58Adam Cohen            super(c, attrs);
517bc927f9c24001e250622ca9a2547ee5b65baef58Adam Cohen        }
518bc927f9c24001e250622ca9a2547ee5b65baef58Adam Cohen
5196788269814a678af976dfc7d6135993e172ce586Adam Cohen        public LayoutParams(int width, int height) {
5206788269814a678af976dfc7d6135993e172ce586Adam Cohen            super(width, height);
5216788269814a678af976dfc7d6135993e172ce586Adam Cohen        }
5226788269814a678af976dfc7d6135993e172ce586Adam Cohen
523bc927f9c24001e250622ca9a2547ee5b65baef58Adam Cohen        public LayoutParams(ViewGroup.LayoutParams lp) {
524bc927f9c24001e250622ca9a2547ee5b65baef58Adam Cohen            super(lp);
525bc927f9c24001e250622ca9a2547ee5b65baef58Adam Cohen        }
526bc927f9c24001e250622ca9a2547ee5b65baef58Adam Cohen
5276788269814a678af976dfc7d6135993e172ce586Adam Cohen        public void setWidth(int width) {
5286788269814a678af976dfc7d6135993e172ce586Adam Cohen            this.width = width;
5296788269814a678af976dfc7d6135993e172ce586Adam Cohen        }
5306788269814a678af976dfc7d6135993e172ce586Adam Cohen
5316788269814a678af976dfc7d6135993e172ce586Adam Cohen        public int getWidth() {
5326788269814a678af976dfc7d6135993e172ce586Adam Cohen            return width;
5336788269814a678af976dfc7d6135993e172ce586Adam Cohen        }
5346788269814a678af976dfc7d6135993e172ce586Adam Cohen
5356788269814a678af976dfc7d6135993e172ce586Adam Cohen        public void setHeight(int height) {
5366788269814a678af976dfc7d6135993e172ce586Adam Cohen            this.height = height;
5376788269814a678af976dfc7d6135993e172ce586Adam Cohen        }
5386788269814a678af976dfc7d6135993e172ce586Adam Cohen
5396788269814a678af976dfc7d6135993e172ce586Adam Cohen        public int getHeight() {
5406788269814a678af976dfc7d6135993e172ce586Adam Cohen            return height;
5416788269814a678af976dfc7d6135993e172ce586Adam Cohen        }
5426788269814a678af976dfc7d6135993e172ce586Adam Cohen
5436788269814a678af976dfc7d6135993e172ce586Adam Cohen        public void setX(int x) {
5446788269814a678af976dfc7d6135993e172ce586Adam Cohen            this.x = x;
5456788269814a678af976dfc7d6135993e172ce586Adam Cohen        }
5466788269814a678af976dfc7d6135993e172ce586Adam Cohen
5476788269814a678af976dfc7d6135993e172ce586Adam Cohen        public int getX() {
5486788269814a678af976dfc7d6135993e172ce586Adam Cohen            return x;
5496788269814a678af976dfc7d6135993e172ce586Adam Cohen        }
5506788269814a678af976dfc7d6135993e172ce586Adam Cohen
5516788269814a678af976dfc7d6135993e172ce586Adam Cohen        public void setY(int y) {
5526788269814a678af976dfc7d6135993e172ce586Adam Cohen            this.y = y;
5536788269814a678af976dfc7d6135993e172ce586Adam Cohen        }
5546788269814a678af976dfc7d6135993e172ce586Adam Cohen
5556788269814a678af976dfc7d6135993e172ce586Adam Cohen        public int getY() {
5566788269814a678af976dfc7d6135993e172ce586Adam Cohen            return y;
5576788269814a678af976dfc7d6135993e172ce586Adam Cohen        }
5586788269814a678af976dfc7d6135993e172ce586Adam Cohen    }
5596788269814a678af976dfc7d6135993e172ce586Adam Cohen
5606788269814a678af976dfc7d6135993e172ce586Adam Cohen    protected void onLayout(boolean changed, int l, int t, int r, int b) {
5616788269814a678af976dfc7d6135993e172ce586Adam Cohen        super.onLayout(changed, l, t, r, b);
5626788269814a678af976dfc7d6135993e172ce586Adam Cohen        int count = getChildCount();
5636788269814a678af976dfc7d6135993e172ce586Adam Cohen        for (int i = 0; i < count; i++) {
5646788269814a678af976dfc7d6135993e172ce586Adam Cohen            View child = getChildAt(i);
5656788269814a678af976dfc7d6135993e172ce586Adam Cohen            final FrameLayout.LayoutParams flp = (FrameLayout.LayoutParams) child.getLayoutParams();
5666788269814a678af976dfc7d6135993e172ce586Adam Cohen            if (flp instanceof LayoutParams) {
5676788269814a678af976dfc7d6135993e172ce586Adam Cohen                final LayoutParams lp = (LayoutParams) flp;
5686788269814a678af976dfc7d6135993e172ce586Adam Cohen                if (lp.customPosition) {
5696788269814a678af976dfc7d6135993e172ce586Adam Cohen                    child.layout(lp.x, lp.y, lp.x + lp.width, lp.y + lp.height);
5706788269814a678af976dfc7d6135993e172ce586Adam Cohen                }
5716788269814a678af976dfc7d6135993e172ce586Adam Cohen            }
5726788269814a678af976dfc7d6135993e172ce586Adam Cohen        }
5736788269814a678af976dfc7d6135993e172ce586Adam Cohen    }
5746788269814a678af976dfc7d6135993e172ce586Adam Cohen
5756788269814a678af976dfc7d6135993e172ce586Adam Cohen    public void clearAllResizeFrames() {
5766788269814a678af976dfc7d6135993e172ce586Adam Cohen        if (mResizeFrames.size() > 0) {
5776788269814a678af976dfc7d6135993e172ce586Adam Cohen            for (AppWidgetResizeFrame frame: mResizeFrames) {
578bebf042666cffe52039b875a549a582abd78a431Adam Cohen                frame.commitResize();
5796788269814a678af976dfc7d6135993e172ce586Adam Cohen                removeView(frame);
5806788269814a678af976dfc7d6135993e172ce586Adam Cohen            }
5816788269814a678af976dfc7d6135993e172ce586Adam Cohen            mResizeFrames.clear();
5826788269814a678af976dfc7d6135993e172ce586Adam Cohen        }
5836788269814a678af976dfc7d6135993e172ce586Adam Cohen    }
5846788269814a678af976dfc7d6135993e172ce586Adam Cohen
5856788269814a678af976dfc7d6135993e172ce586Adam Cohen    public boolean hasResizeFrames() {
5866788269814a678af976dfc7d6135993e172ce586Adam Cohen        return mResizeFrames.size() > 0;
5876788269814a678af976dfc7d6135993e172ce586Adam Cohen    }
5886788269814a678af976dfc7d6135993e172ce586Adam Cohen
5896788269814a678af976dfc7d6135993e172ce586Adam Cohen    public boolean isWidgetBeingResized() {
5906788269814a678af976dfc7d6135993e172ce586Adam Cohen        return mCurrentResizeFrame != null;
5916788269814a678af976dfc7d6135993e172ce586Adam Cohen    }
5926788269814a678af976dfc7d6135993e172ce586Adam Cohen
5936788269814a678af976dfc7d6135993e172ce586Adam Cohen    public void addResizeFrame(ItemInfo itemInfo, LauncherAppWidgetHostView widget,
5946788269814a678af976dfc7d6135993e172ce586Adam Cohen            CellLayout cellLayout) {
5956788269814a678af976dfc7d6135993e172ce586Adam Cohen        AppWidgetResizeFrame resizeFrame = new AppWidgetResizeFrame(getContext(),
5963a9fcedbcd235372cd2ab64f825a0b5b3937f59eMichael Jurka                widget, cellLayout, this);
5976788269814a678af976dfc7d6135993e172ce586Adam Cohen
5986788269814a678af976dfc7d6135993e172ce586Adam Cohen        LayoutParams lp = new LayoutParams(-1, -1);
5996788269814a678af976dfc7d6135993e172ce586Adam Cohen        lp.customPosition = true;
6006788269814a678af976dfc7d6135993e172ce586Adam Cohen
6016788269814a678af976dfc7d6135993e172ce586Adam Cohen        addView(resizeFrame, lp);
6026788269814a678af976dfc7d6135993e172ce586Adam Cohen        mResizeFrames.add(resizeFrame);
6036788269814a678af976dfc7d6135993e172ce586Adam Cohen
6046788269814a678af976dfc7d6135993e172ce586Adam Cohen        resizeFrame.snapToWidget(false);
6056788269814a678af976dfc7d6135993e172ce586Adam Cohen    }
606716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohen
6077bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung    public void animateViewIntoPosition(DragView dragView, final int[] pos, float alpha,
6087bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung            float scaleX, float scaleY, int animationEndStyle, Runnable onFinishRunnable,
6097bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung            int duration) {
610b7e1618c627c6471c565f4f599228648d9e70a10Adam Cohen        Rect r = new Rect();
611b7e1618c627c6471c565f4f599228648d9e70a10Adam Cohen        getViewRectRelativeToSelf(dragView, r);
612b7e1618c627c6471c565f4f599228648d9e70a10Adam Cohen        final int fromX = r.left;
613b7e1618c627c6471c565f4f599228648d9e70a10Adam Cohen        final int fromY = r.top;
614b7e1618c627c6471c565f4f599228648d9e70a10Adam Cohen
6157bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung        animateViewIntoPosition(dragView, fromX, fromY, pos[0], pos[1], alpha, 1, 1, scaleX, scaleY,
616ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen                onFinishRunnable, animationEndStyle, duration, null);
617ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen    }
618ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen
619557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung    public void animateViewIntoPosition(DragView dragView, final View child,
62028f852ab678d9750879b6d3549bf5da176cf1225Adam Cohen            final Runnable onFinishAnimationRunnable, View anchorView) {
62128f852ab678d9750879b6d3549bf5da176cf1225Adam Cohen        animateViewIntoPosition(dragView, child, -1, onFinishAnimationRunnable, anchorView);
622ed51cc9a12c50d12e7d30ed209a49f1a40858043Adam Cohen    }
623ed51cc9a12c50d12e7d30ed209a49f1a40858043Adam Cohen
624ed51cc9a12c50d12e7d30ed209a49f1a40858043Adam Cohen    public void animateViewIntoPosition(DragView dragView, final View child, int duration,
6256441de0ec2a71862798dd51180d0811b42edd514Adam Cohen            final Runnable onFinishAnimationRunnable, View anchorView) {
626a52570f8f9ad65b85e33a2f2e87722f9edd6c6f4Michael Jurka        ShortcutAndWidgetContainer parentChildren = (ShortcutAndWidgetContainer) child.getParent();
627716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohen        CellLayout.LayoutParams lp =  (CellLayout.LayoutParams) child.getLayoutParams();
628eecf02da58adef5486bf0c9ff7127ea891f457a4Winson Chung        parentChildren.measureChild(child);
629716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohen
6303e8f811f31a2275e778244427271f77f4116c08bAdam Cohen        Rect r = new Rect();
6313e8f811f31a2275e778244427271f77f4116c08bAdam Cohen        getViewRectRelativeToSelf(dragView, r);
632716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohen
633716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohen        int coord[] = new int[2];
634307fe23f125cbbd5512ad8d4660025f2ab68f30bAdam Cohen        float childScale = child.getScaleX();
635307fe23f125cbbd5512ad8d4660025f2ab68f30bAdam Cohen        coord[0] = lp.x + (int) (child.getMeasuredWidth() * (1 - childScale) / 2);
636307fe23f125cbbd5512ad8d4660025f2ab68f30bAdam Cohen        coord[1] = lp.y + (int) (child.getMeasuredHeight() * (1 - childScale) / 2);
637eecf02da58adef5486bf0c9ff7127ea891f457a4Winson Chung
6388dfcba4af7a7ece09e8c7d96053e54f3a383e905Adam Cohen        // Since the child hasn't necessarily been laid out, we force the lp to be updated with
639ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen        // the correct coordinates (above) and use these to determine the final location
640557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung        float scale = getDescendantCoordRelativeToSelf((View) child.getParent(), coord);
641307fe23f125cbbd5512ad8d4660025f2ab68f30bAdam Cohen        // We need to account for the scale of the child itself, as the above only accounts for
642307fe23f125cbbd5512ad8d4660025f2ab68f30bAdam Cohen        // for the scale in parents.
643307fe23f125cbbd5512ad8d4660025f2ab68f30bAdam Cohen        scale *= childScale;
644ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen        int toX = coord[0];
645ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen        int toY = coord[1];
646eeb5bbc9409978cc2ae52d48380399fcde3d9f85Winson Chung        float toScale = scale;
6474497ebf9a2726e2a7dbb7f3c49389308908f8454Andrew Flynn        if (child instanceof TextView) {
6484497ebf9a2726e2a7dbb7f3c49389308908f8454Andrew Flynn            TextView tv = (TextView) child;
649eeb5bbc9409978cc2ae52d48380399fcde3d9f85Winson Chung            // Account for the source scale of the icon (ie. from AllApps to Workspace, in which
650eeb5bbc9409978cc2ae52d48380399fcde3d9f85Winson Chung            // the workspace may have smaller icon bounds).
651eeb5bbc9409978cc2ae52d48380399fcde3d9f85Winson Chung            toScale = scale / dragView.getIntrinsicIconScaleFactor();
6524497ebf9a2726e2a7dbb7f3c49389308908f8454Andrew Flynn
6534497ebf9a2726e2a7dbb7f3c49389308908f8454Andrew Flynn            // The child may be scaled (always about the center of the view) so to account for it,
6544497ebf9a2726e2a7dbb7f3c49389308908f8454Andrew Flynn            // we have to offset the position by the scaled size.  Once we do that, we can center
6554497ebf9a2726e2a7dbb7f3c49389308908f8454Andrew Flynn            // the drag view about the scaled child view.
656eeb5bbc9409978cc2ae52d48380399fcde3d9f85Winson Chung            toY += Math.round(toScale * tv.getPaddingTop());
657eeb5bbc9409978cc2ae52d48380399fcde3d9f85Winson Chung            toY -= dragView.getMeasuredHeight() * (1 - toScale) / 2;
65895abbb330ce9bbaf23594245f0f8a795c8118038Sunny Goyal            if (dragView.getDragVisualizeOffset() != null) {
65995abbb330ce9bbaf23594245f0f8a795c8118038Sunny Goyal                toY -=  Math.round(toScale * dragView.getDragVisualizeOffset().y);
66095abbb330ce9bbaf23594245f0f8a795c8118038Sunny Goyal            }
66195abbb330ce9bbaf23594245f0f8a795c8118038Sunny Goyal
6624497ebf9a2726e2a7dbb7f3c49389308908f8454Andrew Flynn            toX -= (dragView.getMeasuredWidth() - Math.round(scale * child.getMeasuredWidth())) / 2;
6634497ebf9a2726e2a7dbb7f3c49389308908f8454Andrew Flynn        } else if (child instanceof FolderIcon) {
664ea359c6aee44c0fe3bb94f7002c3b49208b32b7fWinson Chung            // Account for holographic blur padding on the drag view
6655f8afe6280eae34620067696173e71943e1a30a3Winson Chung            toY += Math.round(scale * (child.getPaddingTop() - dragView.getDragRegionTop()));
666307fe23f125cbbd5512ad8d4660025f2ab68f30bAdam Cohen            toY -= scale * Workspace.DRAG_BITMAP_PADDING / 2;
667307fe23f125cbbd5512ad8d4660025f2ab68f30bAdam Cohen            toY -= (1 - scale) * dragView.getMeasuredHeight() / 2;
668ea359c6aee44c0fe3bb94f7002c3b49208b32b7fWinson Chung            // Center in the x coordinate about the target's drawable
669ea359c6aee44c0fe3bb94f7002c3b49208b32b7fWinson Chung            toX -= (dragView.getMeasuredWidth() - Math.round(scale * child.getMeasuredWidth())) / 2;
670ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen        } else {
671ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen            toY -= (Math.round(scale * (dragView.getHeight() - child.getMeasuredHeight()))) / 2;
672ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen            toX -= (Math.round(scale * (dragView.getMeasuredWidth()
673ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen                    - child.getMeasuredWidth()))) / 2;
674ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen        }
675716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohen
676ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen        final int fromX = r.left;
677ac8c87687b8e063c981f28cb31bab2cc110f26ccAdam Cohen        final int fromY = r.top;
678716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohen        child.setVisibility(INVISIBLE);
6798dfcba4af7a7ece09e8c7d96053e54f3a383e905Adam Cohen        Runnable onCompleteRunnable = new Runnable() {
6808dfcba4af7a7ece09e8c7d96053e54f3a383e905Adam Cohen            public void run() {
6818dfcba4af7a7ece09e8c7d96053e54f3a383e905Adam Cohen                child.setVisibility(VISIBLE);
682d41fbf5680750e34335bba6b38298186c144a4b7Adam Cohen                if (onFinishAnimationRunnable != null) {
683d41fbf5680750e34335bba6b38298186c144a4b7Adam Cohen                    onFinishAnimationRunnable.run();
684d41fbf5680750e34335bba6b38298186c144a4b7Adam Cohen                }
6858dfcba4af7a7ece09e8c7d96053e54f3a383e905Adam Cohen            }
6868dfcba4af7a7ece09e8c7d96053e54f3a383e905Adam Cohen        };
687eeb5bbc9409978cc2ae52d48380399fcde3d9f85Winson Chung        animateViewIntoPosition(dragView, fromX, fromY, toX, toY, 1, 1, 1, toScale, toScale,
688d41fbf5680750e34335bba6b38298186c144a4b7Adam Cohen                onCompleteRunnable, ANIMATION_END_DISAPPEAR, duration, anchorView);
689557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung    }
690557d6ed50cc6560163440aa134870ef0bb11415bWinson Chung
691d41fbf5680750e34335bba6b38298186c144a4b7Adam Cohen    public void animateViewIntoPosition(final DragView view, final int fromX, final int fromY,
692ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen            final int toX, final int toY, float finalAlpha, float initScaleX, float initScaleY,
693ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen            float finalScaleX, float finalScaleY, Runnable onCompleteRunnable,
694ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen            int animationEndStyle, int duration, View anchorView) {
6958dfcba4af7a7ece09e8c7d96053e54f3a383e905Adam Cohen        Rect from = new Rect(fromX, fromY, fromX +
6968dfcba4af7a7ece09e8c7d96053e54f3a383e905Adam Cohen                view.getMeasuredWidth(), fromY + view.getMeasuredHeight());
6973e8f811f31a2275e778244427271f77f4116c08bAdam Cohen        Rect to = new Rect(toX, toY, toX + view.getMeasuredWidth(), toY + view.getMeasuredHeight());
698ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen        animateView(view, from, to, finalAlpha, initScaleX, initScaleY, finalScaleX, finalScaleY, duration,
699ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen                null, null, onCompleteRunnable, animationEndStyle, anchorView);
7003e8f811f31a2275e778244427271f77f4116c08bAdam Cohen    }
7013e8f811f31a2275e778244427271f77f4116c08bAdam Cohen
702b7e1618c627c6471c565f4f599228648d9e70a10Adam Cohen    /**
703b7e1618c627c6471c565f4f599228648d9e70a10Adam Cohen     * This method animates a view at the end of a drag and drop animation.
704b7e1618c627c6471c565f4f599228648d9e70a10Adam Cohen     *
705b7e1618c627c6471c565f4f599228648d9e70a10Adam Cohen     * @param view The view to be animated. This view is drawn directly into DragLayer, and so
706b7e1618c627c6471c565f4f599228648d9e70a10Adam Cohen     *        doesn't need to be a child of DragLayer.
707b7e1618c627c6471c565f4f599228648d9e70a10Adam Cohen     * @param from The initial location of the view. Only the left and top parameters are used.
708b7e1618c627c6471c565f4f599228648d9e70a10Adam Cohen     * @param to The final location of the view. Only the left and top parameters are used. This
709b7e1618c627c6471c565f4f599228648d9e70a10Adam Cohen     *        location doesn't account for scaling, and so should be centered about the desired
710b7e1618c627c6471c565f4f599228648d9e70a10Adam Cohen     *        final location (including scaling).
711b7e1618c627c6471c565f4f599228648d9e70a10Adam Cohen     * @param finalAlpha The final alpha of the view, in case we want it to fade as it animates.
712b7e1618c627c6471c565f4f599228648d9e70a10Adam Cohen     * @param finalScale The final scale of the view. The view is scaled about its center.
713b7e1618c627c6471c565f4f599228648d9e70a10Adam Cohen     * @param duration The duration of the animation.
714b7e1618c627c6471c565f4f599228648d9e70a10Adam Cohen     * @param motionInterpolator The interpolator to use for the location of the view.
715b7e1618c627c6471c565f4f599228648d9e70a10Adam Cohen     * @param alphaInterpolator The interpolator to use for the alpha of the view.
716b7e1618c627c6471c565f4f599228648d9e70a10Adam Cohen     * @param onCompleteRunnable Optional runnable to run on animation completion.
717b7e1618c627c6471c565f4f599228648d9e70a10Adam Cohen     * @param fadeOut Whether or not to fade out the view once the animation completes. If true,
718b7e1618c627c6471c565f4f599228648d9e70a10Adam Cohen     *        the runnable will execute after the view is faded out.
7196441de0ec2a71862798dd51180d0811b42edd514Adam Cohen     * @param anchorView If not null, this represents the view which the animated view stays
7206441de0ec2a71862798dd51180d0811b42edd514Adam Cohen     *        anchored to in case scrolling is currently taking place. Note: currently this is
7216441de0ec2a71862798dd51180d0811b42edd514Adam Cohen     *        only used for the X dimension for the case of the workspace.
722b7e1618c627c6471c565f4f599228648d9e70a10Adam Cohen     */
7237bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung    public void animateView(final DragView view, final Rect from, final Rect to,
7247bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung            final float finalAlpha, final float initScaleX, final float initScaleY,
7257bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung            final float finalScaleX, final float finalScaleY, int duration,
7267bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung            final Interpolator motionInterpolator, final Interpolator alphaInterpolator,
7277bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung            final Runnable onCompleteRunnable, final int animationEndStyle, View anchorView) {
7287bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung
729716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohen        // Calculate the duration of the animation based on the object's distance
730f7a29e83f06909b378dba39c83a522375682710aSunny Goyal        final float dist = (float) Math.hypot(to.left - from.left, to.top - from.top);
731716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohen        final Resources res = getResources();
732716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohen        final float maxDist = (float) res.getInteger(R.integer.config_dropAnimMaxDist);
7333e8f811f31a2275e778244427271f77f4116c08bAdam Cohen
7343e8f811f31a2275e778244427271f77f4116c08bAdam Cohen        // If duration < 0, this is a cue to compute the duration based on the distance
7353e8f811f31a2275e778244427271f77f4116c08bAdam Cohen        if (duration < 0) {
7363e8f811f31a2275e778244427271f77f4116c08bAdam Cohen            duration = res.getInteger(R.integer.config_dropAnimMaxDuration);
7373e8f811f31a2275e778244427271f77f4116c08bAdam Cohen            if (dist < maxDist) {
7388dfcba4af7a7ece09e8c7d96053e54f3a383e905Adam Cohen                duration *= mCubicEaseOutInterpolator.getInterpolation(dist / maxDist);
7393e8f811f31a2275e778244427271f77f4116c08bAdam Cohen            }
74061b0c69d3fe331d3de338322396d5de691d58613Winson Chung            duration = Math.max(duration, res.getInteger(R.integer.config_dropAnimMinDuration));
741716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohen        }
742716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohen
743043f2af567178b82b0b41f12d379e7dd12da2936Winson Chung        // Fall back to cubic ease out interpolator for the animation if none is specified
744043f2af567178b82b0b41f12d379e7dd12da2936Winson Chung        TimeInterpolator interpolator = null;
7453e8f811f31a2275e778244427271f77f4116c08bAdam Cohen        if (alphaInterpolator == null || motionInterpolator == null) {
746043f2af567178b82b0b41f12d379e7dd12da2936Winson Chung            interpolator = mCubicEaseOutInterpolator;
7473e8f811f31a2275e778244427271f77f4116c08bAdam Cohen        }
748716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohen
749043f2af567178b82b0b41f12d379e7dd12da2936Winson Chung        // Animate the view
7507bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung        final float initAlpha = view.getAlpha();
751043f2af567178b82b0b41f12d379e7dd12da2936Winson Chung        final float dropViewScale = view.getScaleX();
752043f2af567178b82b0b41f12d379e7dd12da2936Winson Chung        AnimatorUpdateListener updateCb = new AnimatorUpdateListener() {
753043f2af567178b82b0b41f12d379e7dd12da2936Winson Chung            @Override
754716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohen            public void onAnimationUpdate(ValueAnimator animation) {
755716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohen                final float percent = (Float) animation.getAnimatedValue();
7567bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung                final int width = view.getMeasuredWidth();
7577bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung                final int height = view.getMeasuredHeight();
758716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohen
7593e8f811f31a2275e778244427271f77f4116c08bAdam Cohen                float alphaPercent = alphaInterpolator == null ? percent :
7603e8f811f31a2275e778244427271f77f4116c08bAdam Cohen                        alphaInterpolator.getInterpolation(percent);
7613e8f811f31a2275e778244427271f77f4116c08bAdam Cohen                float motionPercent = motionInterpolator == null ? percent :
7623e8f811f31a2275e778244427271f77f4116c08bAdam Cohen                        motionInterpolator.getInterpolation(percent);
763a1cdab039292f3d809528c0e2e38580b37864d8dWinson Chung
7647bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung                float initialScaleX = initScaleX * dropViewScale;
7657bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung                float initialScaleY = initScaleY * dropViewScale;
7667bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung                float scaleX = finalScaleX * percent + initialScaleX * (1 - percent);
7677bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung                float scaleY = finalScaleY * percent + initialScaleY * (1 - percent);
7687bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung                float alpha = finalAlpha * alphaPercent + initAlpha * (1 - alphaPercent);
7697bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung
7707bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung                float fromLeft = from.left + (initialScaleX - 1f) * width / 2;
7717bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung                float fromTop = from.top + (initialScaleY - 1f) * height / 2;
7727bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung
7737bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung                int x = (int) (fromLeft + Math.round(((to.left - fromLeft) * motionPercent)));
7747bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung                int y = (int) (fromTop + Math.round(((to.top - fromTop) * motionPercent)));
7757bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung
77628f852ab678d9750879b6d3549bf5da176cf1225Adam Cohen                int anchorAdjust = mAnchorView == null ? 0 : (int) (mAnchorView.getScaleX() *
77728f852ab678d9750879b6d3549bf5da176cf1225Adam Cohen                    (mAnchorViewInitialScrollX - mAnchorView.getScrollX()));
77828f852ab678d9750879b6d3549bf5da176cf1225Adam Cohen
77928f852ab678d9750879b6d3549bf5da176cf1225Adam Cohen                int xPos = x - mDropView.getScrollX() + anchorAdjust;
7807bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung                int yPos = y - mDropView.getScrollY();
7817bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung
7827bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung                mDropView.setTranslationX(xPos);
7837bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung                mDropView.setTranslationY(yPos);
7847bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung                mDropView.setScaleX(scaleX);
7857bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung                mDropView.setScaleY(scaleY);
7867bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung                mDropView.setAlpha(alpha);
787716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohen            }
788043f2af567178b82b0b41f12d379e7dd12da2936Winson Chung        };
789043f2af567178b82b0b41f12d379e7dd12da2936Winson Chung        animateView(view, updateCb, duration, interpolator, onCompleteRunnable, animationEndStyle,
790043f2af567178b82b0b41f12d379e7dd12da2936Winson Chung                anchorView);
791043f2af567178b82b0b41f12d379e7dd12da2936Winson Chung    }
792043f2af567178b82b0b41f12d379e7dd12da2936Winson Chung
793043f2af567178b82b0b41f12d379e7dd12da2936Winson Chung    public void animateView(final DragView view, AnimatorUpdateListener updateCb, int duration,
794043f2af567178b82b0b41f12d379e7dd12da2936Winson Chung            TimeInterpolator interpolator, final Runnable onCompleteRunnable,
795043f2af567178b82b0b41f12d379e7dd12da2936Winson Chung            final int animationEndStyle, View anchorView) {
796043f2af567178b82b0b41f12d379e7dd12da2936Winson Chung        // Clean up the previous animations
797043f2af567178b82b0b41f12d379e7dd12da2936Winson Chung        if (mDropAnim != null) mDropAnim.cancel();
798043f2af567178b82b0b41f12d379e7dd12da2936Winson Chung
799043f2af567178b82b0b41f12d379e7dd12da2936Winson Chung        // Show the drop view if it was previously hidden
800043f2af567178b82b0b41f12d379e7dd12da2936Winson Chung        mDropView = view;
801043f2af567178b82b0b41f12d379e7dd12da2936Winson Chung        mDropView.cancelAnimation();
802d6c8e7eeb13094ea1349897663ae28d8a3bf2773Vadim Tryshev        mDropView.requestLayout();
803043f2af567178b82b0b41f12d379e7dd12da2936Winson Chung
804043f2af567178b82b0b41f12d379e7dd12da2936Winson Chung        // Set the anchor view if the page is scrolling
805043f2af567178b82b0b41f12d379e7dd12da2936Winson Chung        if (anchorView != null) {
806043f2af567178b82b0b41f12d379e7dd12da2936Winson Chung            mAnchorViewInitialScrollX = anchorView.getScrollX();
807043f2af567178b82b0b41f12d379e7dd12da2936Winson Chung        }
808043f2af567178b82b0b41f12d379e7dd12da2936Winson Chung        mAnchorView = anchorView;
809043f2af567178b82b0b41f12d379e7dd12da2936Winson Chung
810043f2af567178b82b0b41f12d379e7dd12da2936Winson Chung        // Create and start the animation
811043f2af567178b82b0b41f12d379e7dd12da2936Winson Chung        mDropAnim = new ValueAnimator();
812043f2af567178b82b0b41f12d379e7dd12da2936Winson Chung        mDropAnim.setInterpolator(interpolator);
813043f2af567178b82b0b41f12d379e7dd12da2936Winson Chung        mDropAnim.setDuration(duration);
814043f2af567178b82b0b41f12d379e7dd12da2936Winson Chung        mDropAnim.setFloatValues(0f, 1f);
815043f2af567178b82b0b41f12d379e7dd12da2936Winson Chung        mDropAnim.addUpdateListener(updateCb);
8163e8f811f31a2275e778244427271f77f4116c08bAdam Cohen        mDropAnim.addListener(new AnimatorListenerAdapter() {
8173e8f811f31a2275e778244427271f77f4116c08bAdam Cohen            public void onAnimationEnd(Animator animation) {
8188dfcba4af7a7ece09e8c7d96053e54f3a383e905Adam Cohen                if (onCompleteRunnable != null) {
8198dfcba4af7a7ece09e8c7d96053e54f3a383e905Adam Cohen                    onCompleteRunnable.run();
8208dfcba4af7a7ece09e8c7d96053e54f3a383e905Adam Cohen                }
821ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen                switch (animationEndStyle) {
822ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen                case ANIMATION_END_DISAPPEAR:
823ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen                    clearAnimatedView();
824ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen                    break;
825ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen                case ANIMATION_END_REMAIN_VISIBLE:
826ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen                    break;
8273e8f811f31a2275e778244427271f77f4116c08bAdam Cohen                }
8283e8f811f31a2275e778244427271f77f4116c08bAdam Cohen            }
8293e8f811f31a2275e778244427271f77f4116c08bAdam Cohen        });
830716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohen        mDropAnim.start();
831716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohen    }
832716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohen
833ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen    public void clearAnimatedView() {
8347bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung        if (mDropAnim != null) {
8357bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung            mDropAnim.cancel();
8367bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung        }
8377bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung        if (mDropView != null) {
8382d783ce2f4b2e507bead0d723f0edcdf902dbd46Adam Cohen            mDragController.onDeferredEndDrag(mDropView);
8397bd1bbb509f9569fa18d6b4d33242679fd98bc9bWinson Chung        }
840ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen        mDropView = null;
841ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen        invalidate();
842ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen    }
843ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen
844ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen    public View getAnimatedView() {
845ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen        return mDropView;
846ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen    }
847ed66b2bac7447febe2e405b4ce725cae4f6b5988Adam Cohen
848716b51e030f9c6ed34af2b947760e46a280c65a6Adam Cohen    @Override
8498b805b17158886035b38261eb611d8641701ae43Michael Jurka    public void onChildViewAdded(View parent, View child) {
850a6d0492e5f0dd4e1b43d4034a770241dc65f8f8cAdam Cohen        super.onChildViewAdded(parent, child);
851b670f195ffb7b4a0519fd0b337b68f7412159414Adam Cohen        if (mOverlayView != null) {
852b670f195ffb7b4a0519fd0b337b68f7412159414Adam Cohen            // ensure that the overlay view stays on top. we can't use drawing order for this
853b670f195ffb7b4a0519fd0b337b68f7412159414Adam Cohen            // because in API level 16 touch dispatch doesn't respect drawing order.
854b670f195ffb7b4a0519fd0b337b68f7412159414Adam Cohen            mOverlayView.bringToFront();
855b670f195ffb7b4a0519fd0b337b68f7412159414Adam Cohen        }
85621b411074e39fd10cbc8dd0220bb159da4af2c76Adam Cohen        updateChildIndices();
85721b411074e39fd10cbc8dd0220bb159da4af2c76Adam Cohen    }
85821b411074e39fd10cbc8dd0220bb159da4af2c76Adam Cohen
85921b411074e39fd10cbc8dd0220bb159da4af2c76Adam Cohen    @Override
8608b805b17158886035b38261eb611d8641701ae43Michael Jurka    public void onChildViewRemoved(View parent, View child) {
86121b411074e39fd10cbc8dd0220bb159da4af2c76Adam Cohen        updateChildIndices();
86221b411074e39fd10cbc8dd0220bb159da4af2c76Adam Cohen    }
86321b411074e39fd10cbc8dd0220bb159da4af2c76Adam Cohen
864432609a246819f3cf887a80c2ae56b61fc5ca25aAdam Cohen    @Override
865432609a246819f3cf887a80c2ae56b61fc5ca25aAdam Cohen    public void bringChildToFront(View child) {
866432609a246819f3cf887a80c2ae56b61fc5ca25aAdam Cohen        super.bringChildToFront(child);
867b670f195ffb7b4a0519fd0b337b68f7412159414Adam Cohen        if (child != mOverlayView && mOverlayView != null) {
868b670f195ffb7b4a0519fd0b337b68f7412159414Adam Cohen            // ensure that the overlay view stays on top. we can't use drawing order for this
869b670f195ffb7b4a0519fd0b337b68f7412159414Adam Cohen            // because in API level 16 touch dispatch doesn't respect drawing order.
870b670f195ffb7b4a0519fd0b337b68f7412159414Adam Cohen            mOverlayView.bringToFront();
871b670f195ffb7b4a0519fd0b337b68f7412159414Adam Cohen        }
872432609a246819f3cf887a80c2ae56b61fc5ca25aAdam Cohen        updateChildIndices();
873432609a246819f3cf887a80c2ae56b61fc5ca25aAdam Cohen    }
874432609a246819f3cf887a80c2ae56b61fc5ca25aAdam Cohen
87521b411074e39fd10cbc8dd0220bb159da4af2c76Adam Cohen    private void updateChildIndices() {
876432609a246819f3cf887a80c2ae56b61fc5ca25aAdam Cohen        mTopViewIndex = -1;
87755bd9725d5c0373b89f7b9bbd9547550ea3bbc63Jorim Jaggi        int childCount = getChildCount();
87855bd9725d5c0373b89f7b9bbd9547550ea3bbc63Jorim Jaggi        for (int i = 0; i < childCount; i++) {
879b670f195ffb7b4a0519fd0b337b68f7412159414Adam Cohen            if (getChildAt(i) instanceof DragView) {
880432609a246819f3cf887a80c2ae56b61fc5ca25aAdam Cohen                mTopViewIndex = i;
88155bd9725d5c0373b89f7b9bbd9547550ea3bbc63Jorim Jaggi            }
88221b411074e39fd10cbc8dd0220bb159da4af2c76Adam Cohen        }
8832d783ce2f4b2e507bead0d723f0edcdf902dbd46Adam Cohen        mChildCountOnLastUpdate = childCount;
88421b411074e39fd10cbc8dd0220bb159da4af2c76Adam Cohen    }
88521b411074e39fd10cbc8dd0220bb159da4af2c76Adam Cohen
88621b411074e39fd10cbc8dd0220bb159da4af2c76Adam Cohen    @Override
88721b411074e39fd10cbc8dd0220bb159da4af2c76Adam Cohen    protected int getChildDrawingOrder(int childCount, int i) {
8882d783ce2f4b2e507bead0d723f0edcdf902dbd46Adam Cohen        if (mChildCountOnLastUpdate != childCount) {
8892d783ce2f4b2e507bead0d723f0edcdf902dbd46Adam Cohen            // between platform versions 17 and 18, behavior for onChildViewRemoved / Added changed.
8902d783ce2f4b2e507bead0d723f0edcdf902dbd46Adam Cohen            // Pre-18, the child was not added / removed by the time of those callbacks. We need to
8912d783ce2f4b2e507bead0d723f0edcdf902dbd46Adam Cohen            // force update our representation of things here to avoid crashing on pre-18 devices
8922d783ce2f4b2e507bead0d723f0edcdf902dbd46Adam Cohen            // in certain instances.
8932d783ce2f4b2e507bead0d723f0edcdf902dbd46Adam Cohen            updateChildIndices();
8942d783ce2f4b2e507bead0d723f0edcdf902dbd46Adam Cohen        }
8952d783ce2f4b2e507bead0d723f0edcdf902dbd46Adam Cohen
896432609a246819f3cf887a80c2ae56b61fc5ca25aAdam Cohen        // i represents the current draw iteration
897432609a246819f3cf887a80c2ae56b61fc5ca25aAdam Cohen        if (mTopViewIndex == -1) {
898432609a246819f3cf887a80c2ae56b61fc5ca25aAdam Cohen            // in general we do nothing
89921b411074e39fd10cbc8dd0220bb159da4af2c76Adam Cohen            return i;
900432609a246819f3cf887a80c2ae56b61fc5ca25aAdam Cohen        } else if (i == childCount - 1) {
901432609a246819f3cf887a80c2ae56b61fc5ca25aAdam Cohen            // if we have a top index, we return it when drawing last item (highest z-order)
902432609a246819f3cf887a80c2ae56b61fc5ca25aAdam Cohen            return mTopViewIndex;
903432609a246819f3cf887a80c2ae56b61fc5ca25aAdam Cohen        } else if (i < mTopViewIndex) {
90421b411074e39fd10cbc8dd0220bb159da4af2c76Adam Cohen            return i;
90555bd9725d5c0373b89f7b9bbd9547550ea3bbc63Jorim Jaggi        } else {
906432609a246819f3cf887a80c2ae56b61fc5ca25aAdam Cohen            // for indexes greater than the top index, we fetch one item above to shift for the
907432609a246819f3cf887a80c2ae56b61fc5ca25aAdam Cohen            // displacement of the top index
908432609a246819f3cf887a80c2ae56b61fc5ca25aAdam Cohen            return i + 1;
90921b411074e39fd10cbc8dd0220bb159da4af2c76Adam Cohen        }
91021b411074e39fd10cbc8dd0220bb159da4af2c76Adam Cohen    }
911360e63fd3e77247002b86da2a77bd8dfe8c8a807Winson Chung
912e0c332365604976d999eb25d4bdcc49ec75b7a1cTony Wickham    void onEnterScrollArea() {
9130f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham        mInScrollArea = true;
9140f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham        invalidate();
9150f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham    }
9160f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham
9170f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham    void onExitScrollArea() {
9180f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham        mInScrollArea = false;
9190f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham        invalidate();
9200f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham    }
9210f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham
9220f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham    public void showPageHints() {
9230f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham        mShowPageHints = true;
9240f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham        Workspace workspace = mLauncher.getWorkspace();
9250f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham        getDescendantRectRelativeToSelf(workspace.getChildAt(workspace.numCustomPages()),
9260f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham                mScrollChildPosition);
9270f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham        invalidate();
9280f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham    }
9290f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham
9300f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham    public void hidePageHints() {
9310f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham        mShowPageHints = false;
9320f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham        invalidate();
9330f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham    }
9340f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham
93595cdb3a0211650e76adb451588ce89fd585b178fTony Wickham    public void invalidateScrim() {
93695cdb3a0211650e76adb451588ce89fd585b178fTony Wickham        if (mBackgroundAlpha > 0.0f) {
93795cdb3a0211650e76adb451588ce89fd585b178fTony Wickham            invalidate();
93895cdb3a0211650e76adb451588ce89fd585b178fTony Wickham        }
93995cdb3a0211650e76adb451588ce89fd585b178fTony Wickham    }
94095cdb3a0211650e76adb451588ce89fd585b178fTony Wickham
941360e63fd3e77247002b86da2a77bd8dfe8c8a807Winson Chung    @Override
942360e63fd3e77247002b86da2a77bd8dfe8c8a807Winson Chung    protected void dispatchDraw(Canvas canvas) {
9430fa93bc5c65a2d7d5e5f4e798499903759c48cc5Sunny Goyal        // Draw the background below children.
9440fa93bc5c65a2d7d5e5f4e798499903759c48cc5Sunny Goyal        if (mBackgroundAlpha > 0.0f) {
94595cdb3a0211650e76adb451588ce89fd585b178fTony Wickham            // Update the scroll position first to ensure scrim cutout is in the right place.
94695cdb3a0211650e76adb451588ce89fd585b178fTony Wickham            mLauncher.getWorkspace().computeScrollWithoutInvalidation();
94795cdb3a0211650e76adb451588ce89fd585b178fTony Wickham
9486c5891a9fce95eee3d87823d11d21889743e9c68Adam Cohen            int alpha = (int) (mBackgroundAlpha * 255);
94995cdb3a0211650e76adb451588ce89fd585b178fTony Wickham            CellLayout currCellLayout = mLauncher.getWorkspace().getCurrentDragOverlappingLayout();
95095cdb3a0211650e76adb451588ce89fd585b178fTony Wickham            canvas.save();
95195cdb3a0211650e76adb451588ce89fd585b178fTony Wickham            if (currCellLayout != null && currCellLayout != mLauncher.getHotseat().getLayout()) {
95295cdb3a0211650e76adb451588ce89fd585b178fTony Wickham                // Cut a hole in the darkening scrim on the page that should be highlighted, if any.
95395cdb3a0211650e76adb451588ce89fd585b178fTony Wickham                getDescendantRectRelativeToSelf(currCellLayout, mHighlightRect);
95495cdb3a0211650e76adb451588ce89fd585b178fTony Wickham                canvas.clipRect(mHighlightRect, Region.Op.DIFFERENCE);
95595cdb3a0211650e76adb451588ce89fd585b178fTony Wickham            }
9560fa93bc5c65a2d7d5e5f4e798499903759c48cc5Sunny Goyal            canvas.drawColor((alpha << 24) | SCRIM_COLOR);
95795cdb3a0211650e76adb451588ce89fd585b178fTony Wickham            canvas.restore();
9586c5891a9fce95eee3d87823d11d21889743e9c68Adam Cohen        }
9596c5891a9fce95eee3d87823d11d21889743e9c68Adam Cohen
960360e63fd3e77247002b86da2a77bd8dfe8c8a807Winson Chung        super.dispatchDraw(canvas);
9618cc05507150fea5282b7581e1a268967a702bcc9Adam Cohen    }
962360e63fd3e77247002b86da2a77bd8dfe8c8a807Winson Chung
9630f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham    private void drawPageHints(Canvas canvas) {
9640f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham        if (mShowPageHints) {
9650f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham            Workspace workspace = mLauncher.getWorkspace();
9660f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham            int width = getMeasuredWidth();
9670f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham            int page = workspace.getNextPage();
9680f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham            CellLayout leftPage = (CellLayout) workspace.getChildAt(mIsRtl ? page + 1 : page - 1);
9690f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham            CellLayout rightPage = (CellLayout) workspace.getChildAt(mIsRtl ? page - 1 : page + 1);
9700f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham
9710f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham            if (leftPage != null && leftPage.isDragTarget()) {
9720f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham                Drawable left = mInScrollArea && leftPage.getIsDragOverlapping() ?
9730f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham                        mLeftHoverDrawableActive : mLeftHoverDrawable;
9740f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham                left.setBounds(0, mScrollChildPosition.top,
9750f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham                        left.getIntrinsicWidth(), mScrollChildPosition.bottom);
9760f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham                left.draw(canvas);
9770f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham            }
9780f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham            if (rightPage != null && rightPage.isDragTarget()) {
9790f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham                Drawable right = mInScrollArea && rightPage.getIsDragOverlapping() ?
9800f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham                        mRightHoverDrawableActive : mRightHoverDrawable;
9810f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham                right.setBounds(width - right.getIntrinsicWidth(),
9820f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham                        mScrollChildPosition.top, width, mScrollChildPosition.bottom);
9830f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham                right.draw(canvas);
9840f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham            }
9850f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham        }
9860f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham    }
9870f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham
9880f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham    protected boolean drawChild(Canvas canvas, View child, long drawingTime) {
9890f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham        boolean ret = super.drawChild(canvas, child, drawingTime);
9900f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham
9910f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham        // We want to draw the page hints above the workspace, but below the drag view.
9920f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham        if (child instanceof Workspace) {
9930f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham            drawPageHints(canvas);
9940f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham        }
9950f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham        return ret;
9960f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham    }
9970f97b7874fe29f36e7a40d2fe4b45d1e0e24fe1bTony Wickham
9986c5891a9fce95eee3d87823d11d21889743e9c68Adam Cohen    public void setBackgroundAlpha(float alpha) {
9996c5891a9fce95eee3d87823d11d21889743e9c68Adam Cohen        if (alpha != mBackgroundAlpha) {
10006c5891a9fce95eee3d87823d11d21889743e9c68Adam Cohen            mBackgroundAlpha = alpha;
10016c5891a9fce95eee3d87823d11d21889743e9c68Adam Cohen            invalidate();
10026c5891a9fce95eee3d87823d11d21889743e9c68Adam Cohen        }
10036c5891a9fce95eee3d87823d11d21889743e9c68Adam Cohen    }
10046c5891a9fce95eee3d87823d11d21889743e9c68Adam Cohen
10056c5891a9fce95eee3d87823d11d21889743e9c68Adam Cohen    public float getBackgroundAlpha() {
10066c5891a9fce95eee3d87823d11d21889743e9c68Adam Cohen        return mBackgroundAlpha;
10076c5891a9fce95eee3d87823d11d21889743e9c68Adam Cohen    }
10086c5891a9fce95eee3d87823d11d21889743e9c68Adam Cohen
1009b0f3d74815417acc3a9d3dce90cbf34b772847f0Adam Cohen    public void setTouchCompleteListener(TouchCompleteListener listener) {
1010b0f3d74815417acc3a9d3dce90cbf34b772847f0Adam Cohen        mTouchCompleteListener = listener;
1011b0f3d74815417acc3a9d3dce90cbf34b772847f0Adam Cohen    }
1012b0f3d74815417acc3a9d3dce90cbf34b772847f0Adam Cohen
1013b0f3d74815417acc3a9d3dce90cbf34b772847f0Adam Cohen    public interface TouchCompleteListener {
1014b0f3d74815417acc3a9d3dce90cbf34b772847f0Adam Cohen        public void onTouchComplete();
1015b0f3d74815417acc3a9d3dce90cbf34b772847f0Adam Cohen    }
101631dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project}
1017