Workspace.java revision 63d7870ea23502f10b74e9c91de9bd8f0bfc0507
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.launcher3; 18 19import android.animation.Animator; 20import android.animation.AnimatorSet; 21import android.animation.LayoutTransition; 22import android.animation.ObjectAnimator; 23import android.animation.TimeInterpolator; 24import android.animation.ValueAnimator; 25import android.animation.ValueAnimator.AnimatorUpdateListener; 26import android.app.WallpaperManager; 27import android.appwidget.AppWidgetHostView; 28import android.appwidget.AppWidgetProviderInfo; 29import android.content.ComponentName; 30import android.content.Context; 31import android.content.Intent; 32import android.content.SharedPreferences; 33import android.content.res.Resources; 34import android.content.res.TypedArray; 35import android.graphics.Bitmap; 36import android.graphics.Canvas; 37import android.graphics.Color; 38import android.graphics.Matrix; 39import android.graphics.Paint; 40import android.graphics.Point; 41import android.graphics.PointF; 42import android.graphics.Rect; 43import android.graphics.Region.Op; 44import android.graphics.drawable.Drawable; 45import android.os.IBinder; 46import android.os.Parcelable; 47import android.util.AttributeSet; 48import android.util.Log; 49import android.util.SparseArray; 50import android.view.Display; 51import android.view.MotionEvent; 52import android.view.View; 53import android.view.ViewGroup; 54import android.view.animation.DecelerateInterpolator; 55import android.widget.ImageView; 56import android.widget.TextView; 57 58import com.android.launcher3.FolderIcon.FolderRingAnimator; 59import com.android.launcher3.Launcher.CustomContentCallbacks; 60import com.android.launcher3.LauncherSettings.Favorites; 61 62import java.net.URISyntaxException; 63import java.util.ArrayList; 64import java.util.HashMap; 65import java.util.HashSet; 66import java.util.Iterator; 67import java.util.Set; 68 69/** 70 * The workspace is a wide area with a wallpaper and a finite number of pages. 71 * Each page contains a number of icons, folders or widgets the user can 72 * interact with. A workspace is meant to be used with a fixed width only. 73 */ 74public class Workspace extends SmoothPagedView 75 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 76 DragController.DragListener, LauncherTransitionable, ViewGroup.OnHierarchyChangeListener { 77 private static final String TAG = "Launcher.Workspace"; 78 79 // Y rotation to apply to the workspace screens 80 private static final float WORKSPACE_OVERSCROLL_ROTATION = 24f; 81 82 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 83 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 84 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 85 86 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 87 private static final int ADJACENT_SCREEN_DROP_DURATION = 300; 88 private static final int FLING_THRESHOLD_VELOCITY = 500; 89 90 // These animators are used to fade the children's outlines 91 private ObjectAnimator mChildrenOutlineFadeInAnimation; 92 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 93 private float mChildrenOutlineAlpha = 0; 94 95 // These properties refer to the background protection gradient used for AllApps and Customize 96 private ValueAnimator mBackgroundFadeInAnimation; 97 private ValueAnimator mBackgroundFadeOutAnimation; 98 private Drawable mBackground; 99 boolean mDrawBackground = true; 100 private float mBackgroundAlpha = 0; 101 102 private LayoutTransition mLayoutTransition; 103 private final WallpaperManager mWallpaperManager; 104 private IBinder mWindowToken; 105 private static final float WALLPAPER_SCREENS_SPAN = 2f; 106 107 private int mDefaultPage; 108 109 // The screen id used for the empty screen always present to the right. 110 private final static long EXTRA_EMPTY_SCREEN_ID = -201; 111 private final static long CUSTOM_CONTENT_SCREEN_ID = -301; 112 113 private HashMap<Long, CellLayout> mWorkspaceScreens = new HashMap<Long, CellLayout>(); 114 private ArrayList<Long> mScreenOrder = new ArrayList<Long>(); 115 116 /** 117 * CellInfo for the cell that is currently being dragged 118 */ 119 private CellLayout.CellInfo mDragInfo; 120 121 /** 122 * Target drop area calculated during last acceptDrop call. 123 */ 124 private int[] mTargetCell = new int[2]; 125 private int mDragOverX = -1; 126 private int mDragOverY = -1; 127 128 static Rect mLandscapeCellLayoutMetrics = null; 129 static Rect mPortraitCellLayoutMetrics = null; 130 131 CustomContentCallbacks mCustomContentCallbacks; 132 boolean mCustomContentShowing; 133 134 /** 135 * The CellLayout that is currently being dragged over 136 */ 137 private CellLayout mDragTargetLayout = null; 138 /** 139 * The CellLayout that we will show as glowing 140 */ 141 private CellLayout mDragOverlappingLayout = null; 142 143 /** 144 * The CellLayout which will be dropped to 145 */ 146 private CellLayout mDropToLayout = null; 147 148 private Launcher mLauncher; 149 private IconCache mIconCache; 150 private DragController mDragController; 151 152 // These are temporary variables to prevent having to allocate a new object just to 153 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 154 private int[] mTempCell = new int[2]; 155 private int[] mTempPt = new int[2]; 156 private int[] mTempEstimate = new int[2]; 157 private float[] mDragViewVisualCenter = new float[2]; 158 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 159 private Matrix mTempInverseMatrix = new Matrix(); 160 161 private SpringLoadedDragController mSpringLoadedDragController; 162 private float mSpringLoadedShrinkFactor; 163 164 private static final int DEFAULT_CELL_COUNT_X = 4; 165 private static final int DEFAULT_CELL_COUNT_Y = 4; 166 167 // State variable that indicates whether the pages are small (ie when you're 168 // in all apps or customize mode) 169 170 enum State { NORMAL, SPRING_LOADED, SMALL }; 171 private State mState = State.NORMAL; 172 private boolean mIsSwitchingState = false; 173 174 boolean mAnimatingViewIntoPlace = false; 175 boolean mIsDragOccuring = false; 176 boolean mChildrenLayersEnabled = true; 177 178 private boolean mStripScreensOnPageStopMoving = false; 179 180 /** Is the user is dragging an item near the edge of a page? */ 181 private boolean mInScrollArea = false; 182 183 private HolographicOutlineHelper mOutlineHelper; 184 private Bitmap mDragOutline = null; 185 private final Rect mTempRect = new Rect(); 186 private final int[] mTempXY = new int[2]; 187 private int[] mTempVisiblePagesRange = new int[2]; 188 private float mOverscrollFade = 0; 189 private boolean mOverscrollTransformsSet; 190 public static final int DRAG_BITMAP_PADDING = 2; 191 private boolean mWorkspaceFadeInAdjacentScreens; 192 193 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 194 int mWallpaperWidth; 195 int mWallpaperHeight; 196 WallpaperOffsetInterpolator mWallpaperOffset; 197 boolean mUpdateWallpaperOffsetImmediately = false; 198 private Runnable mDelayedResizeRunnable; 199 private Runnable mDelayedSnapToPageRunnable; 200 private Point mDisplaySize = new Point(); 201 private boolean mIsStaticWallpaper; 202 private int mWallpaperTravelWidth; 203 private int mCameraDistance; 204 205 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 206 private static final int FOLDER_CREATION_TIMEOUT = 0; 207 private static final int REORDER_TIMEOUT = 250; 208 private final Alarm mFolderCreationAlarm = new Alarm(); 209 private final Alarm mReorderAlarm = new Alarm(); 210 private FolderRingAnimator mDragFolderRingAnimator = null; 211 private FolderIcon mDragOverFolderIcon = null; 212 private boolean mCreateUserFolderOnDrop = false; 213 private boolean mAddToExistingFolderOnDrop = false; 214 private DropTarget.DragEnforcer mDragEnforcer; 215 private float mMaxDistanceForFolderCreation; 216 217 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 218 private float mXDown; 219 private float mYDown; 220 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 221 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 222 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 223 224 // Relating to the animation of items being dropped externally 225 public static final int ANIMATE_INTO_POSITION_AND_DISAPPEAR = 0; 226 public static final int ANIMATE_INTO_POSITION_AND_REMAIN = 1; 227 public static final int ANIMATE_INTO_POSITION_AND_RESIZE = 2; 228 public static final int COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION = 3; 229 public static final int CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION = 4; 230 231 // Related to dragging, folder creation and reordering 232 private static final int DRAG_MODE_NONE = 0; 233 private static final int DRAG_MODE_CREATE_FOLDER = 1; 234 private static final int DRAG_MODE_ADD_TO_FOLDER = 2; 235 private static final int DRAG_MODE_REORDER = 3; 236 private int mDragMode = DRAG_MODE_NONE; 237 private int mLastReorderX = -1; 238 private int mLastReorderY = -1; 239 240 private SparseArray<Parcelable> mSavedStates; 241 private final ArrayList<Integer> mRestoredPages = new ArrayList<Integer>(); 242 243 // These variables are used for storing the initial and final values during workspace animations 244 private int mSavedScrollX; 245 private float mSavedRotationY; 246 private float mSavedTranslationX; 247 248 private float mCurrentScale; 249 private float mNewScale; 250 private float[] mOldBackgroundAlphas; 251 private float[] mOldAlphas; 252 private float[] mNewBackgroundAlphas; 253 private float[] mNewAlphas; 254 private int mLastChildCount = -1; 255 private float mTransitionProgress; 256 257 private Runnable mDeferredAction; 258 private boolean mDeferDropAfterUninstall; 259 private boolean mUninstallSuccessful; 260 261 private final Runnable mBindPages = new Runnable() { 262 @Override 263 public void run() { 264 mLauncher.getModel().bindRemainingSynchronousPages(); 265 } 266 }; 267 268 /** 269 * Used to inflate the Workspace from XML. 270 * 271 * @param context The application's context. 272 * @param attrs The attributes set containing the Workspace's customization values. 273 */ 274 public Workspace(Context context, AttributeSet attrs) { 275 this(context, attrs, 0); 276 } 277 278 /** 279 * Used to inflate the Workspace from XML. 280 * 281 * @param context The application's context. 282 * @param attrs The attributes set containing the Workspace's customization values. 283 * @param defStyle Unused. 284 */ 285 public Workspace(Context context, AttributeSet attrs, int defStyle) { 286 super(context, attrs, defStyle); 287 mContentIsRefreshable = false; 288 289 mOutlineHelper = HolographicOutlineHelper.obtain(context); 290 291 mDragEnforcer = new DropTarget.DragEnforcer(context); 292 // With workspace, data is available straight from the get-go 293 setDataIsReady(); 294 295 mLauncher = (Launcher) context; 296 final Resources res = getResources(); 297 mWorkspaceFadeInAdjacentScreens = res.getBoolean(R.bool.config_workspaceFadeAdjacentScreens); 298 mFadeInAdjacentScreens = false; 299 mWallpaperManager = WallpaperManager.getInstance(context); 300 301 int cellCountX = DEFAULT_CELL_COUNT_X; 302 int cellCountY = DEFAULT_CELL_COUNT_Y; 303 304 TypedArray a = context.obtainStyledAttributes(attrs, 305 R.styleable.Workspace, defStyle, 0); 306 307 if (LauncherAppState.getInstance().isScreenLarge()) { 308 // Determine number of rows/columns dynamically 309 // TODO: This code currently fails on tablets with an aspect ratio < 1.3. 310 // Around that ratio we should make cells the same size in portrait and 311 // landscape 312 TypedArray actionBarSizeTypedArray = 313 context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize }); 314 final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); 315 316 Point minDims = new Point(); 317 Point maxDims = new Point(); 318 mLauncher.getWindowManager().getDefaultDisplay().getCurrentSizeRange(minDims, maxDims); 319 320 cellCountX = 1; 321 while (CellLayout.widthInPortrait(res, cellCountX + 1) <= minDims.x) { 322 cellCountX++; 323 } 324 325 cellCountY = 1; 326 while (actionBarHeight + CellLayout.heightInLandscape(res, cellCountY + 1) 327 <= minDims.y) { 328 cellCountY++; 329 } 330 } 331 332 mSpringLoadedShrinkFactor = 333 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 334 mCameraDistance = res.getInteger(R.integer.config_cameraDistance); 335 336 // if the value is manually specified, use that instead 337 cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX); 338 cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY); 339 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 340 341 a.recycle(); 342 343 setOnHierarchyChangeListener(this); 344 345 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 346 setHapticFeedbackEnabled(false); 347 348 initWorkspace(); 349 350 // Disable multitouch across the workspace/all apps/customize tray 351 setMotionEventSplittingEnabled(true); 352 353 // Unless otherwise specified this view is important for accessibility. 354 if (getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 355 setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 356 } 357 } 358 359 // estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each 360 // dimension if unsuccessful 361 public int[] estimateItemSize(int hSpan, int vSpan, 362 ItemInfo itemInfo, boolean springLoaded) { 363 int[] size = new int[2]; 364 if (getChildCount() > 0) { 365 CellLayout cl = (CellLayout) mLauncher.getWorkspace().getChildAt(0); 366 Rect r = estimateItemPosition(cl, itemInfo, 0, 0, hSpan, vSpan); 367 size[0] = r.width(); 368 size[1] = r.height(); 369 if (springLoaded) { 370 size[0] *= mSpringLoadedShrinkFactor; 371 size[1] *= mSpringLoadedShrinkFactor; 372 } 373 return size; 374 } else { 375 size[0] = Integer.MAX_VALUE; 376 size[1] = Integer.MAX_VALUE; 377 return size; 378 } 379 } 380 381 public Rect estimateItemPosition(CellLayout cl, ItemInfo pendingInfo, 382 int hCell, int vCell, int hSpan, int vSpan) { 383 Rect r = new Rect(); 384 cl.cellToRect(hCell, vCell, hSpan, vSpan, r); 385 return r; 386 } 387 388 public void onDragStart(DragSource source, Object info, int dragAction) { 389 mIsDragOccuring = true; 390 updateChildrenLayersEnabled(false); 391 mLauncher.lockScreenOrientation(); 392 setChildrenBackgroundAlphaMultipliers(1f); 393 // Prevent any Un/InstallShortcutReceivers from updating the db while we are dragging 394 InstallShortcutReceiver.enableInstallQueue(); 395 UninstallShortcutReceiver.enableUninstallQueue(); 396 } 397 398 public void onDragEnd() { 399 mIsDragOccuring = false; 400 updateChildrenLayersEnabled(false); 401 mLauncher.unlockScreenOrientation(false); 402 403 // Re-enable any Un/InstallShortcutReceiver and now process any queued items 404 InstallShortcutReceiver.disableAndFlushInstallQueue(getContext()); 405 UninstallShortcutReceiver.disableAndFlushUninstallQueue(getContext()); 406 } 407 408 /** 409 * Initializes various states for this workspace. 410 */ 411 protected void initWorkspace() { 412 Context context = getContext(); 413 mCurrentPage = mDefaultPage; 414 Launcher.setScreen(mCurrentPage); 415 LauncherAppState app = LauncherAppState.getInstance(); 416 mIconCache = app.getIconCache(); 417 setWillNotDraw(false); 418 setClipChildren(false); 419 setClipToPadding(false); 420 setChildrenDrawnWithCacheEnabled(true); 421 setMinScale(0.5f); 422 setupLayoutTransition(); 423 424 final Resources res = getResources(); 425 try { 426 mBackground = res.getDrawable(R.drawable.apps_customize_bg); 427 } catch (Resources.NotFoundException e) { 428 // In this case, we will skip drawing background protection 429 } 430 431 mWallpaperOffset = new WallpaperOffsetInterpolator(); 432 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 433 display.getSize(mDisplaySize); 434 mWallpaperTravelWidth = (int) (mDisplaySize.x * 435 wallpaperTravelToScreenWidthRatio(mDisplaySize.x, mDisplaySize.y)); 436 437 mMaxDistanceForFolderCreation = (0.55f * res.getDimensionPixelSize(R.dimen.app_icon_size)); 438 mFlingThresholdVelocity = (int) (FLING_THRESHOLD_VELOCITY * mDensity); 439 } 440 441 private void setupLayoutTransition() { 442 // We want to show layout transitions when pages are deleted, to close the gap. 443 mLayoutTransition = new LayoutTransition(); 444 mLayoutTransition.enableTransitionType(LayoutTransition.DISAPPEARING); 445 mLayoutTransition.enableTransitionType(LayoutTransition.CHANGE_DISAPPEARING); 446 mLayoutTransition.disableTransitionType(LayoutTransition.APPEARING); 447 mLayoutTransition.disableTransitionType(LayoutTransition.CHANGE_APPEARING); 448 setLayoutTransition(mLayoutTransition); 449 } 450 451 @Override 452 protected int getScrollMode() { 453 return SmoothPagedView.X_LARGE_MODE; 454 } 455 456 @Override 457 public void onChildViewAdded(View parent, View child) { 458 if (!(child instanceof CellLayout)) { 459 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 460 } 461 CellLayout cl = ((CellLayout) child); 462 cl.setOnInterceptTouchListener(this); 463 cl.setClickable(true); 464 cl.setContentDescription(getContext().getString( 465 R.string.workspace_description_format, getChildCount())); 466 467 super.onChildViewAdded(parent, child); 468 } 469 470 protected boolean shouldDrawChild(View child) { 471 final CellLayout cl = (CellLayout) child; 472 return super.shouldDrawChild(child) && 473 (cl.getShortcutsAndWidgets().getAlpha() > 0 || 474 cl.getBackgroundAlpha() > 0); 475 } 476 477 /** 478 * @return The open folder on the current screen, or null if there is none 479 */ 480 Folder getOpenFolder() { 481 DragLayer dragLayer = mLauncher.getDragLayer(); 482 int count = dragLayer.getChildCount(); 483 for (int i = 0; i < count; i++) { 484 View child = dragLayer.getChildAt(i); 485 if (child instanceof Folder) { 486 Folder folder = (Folder) child; 487 if (folder.getInfo().opened) 488 return folder; 489 } 490 } 491 return null; 492 } 493 494 boolean isTouchActive() { 495 return mTouchState != TOUCH_STATE_REST; 496 } 497 498 public long insertNewWorkspaceScreen(long screenId) { 499 return insertNewWorkspaceScreen(screenId, getChildCount(), true); 500 } 501 502 public long insertNewWorkspaceScreenBeforeEmptyScreen(long screenId, boolean updateDb) { 503 // Find the index to insert this view into. If the empty screen exists, then 504 // insert it before that. 505 int insertIndex = mScreenOrder.indexOf(EXTRA_EMPTY_SCREEN_ID); 506 if (insertIndex < 0) { 507 insertIndex = mScreenOrder.size(); 508 } 509 return insertNewWorkspaceScreen(screenId, insertIndex, updateDb); 510 } 511 512 public long insertNewWorkspaceScreen(long screenId, boolean updateDb) { 513 return insertNewWorkspaceScreen(screenId, getChildCount(), updateDb); 514 } 515 516 public long insertNewWorkspaceScreen(long screenId, int insertIndex, boolean updateDb) { 517 CellLayout newScreen = (CellLayout) 518 mLauncher.getLayoutInflater().inflate(R.layout.workspace_screen, null); 519 520 newScreen.setOnLongClickListener(mLongClickListener); 521 mWorkspaceScreens.put(screenId, newScreen); 522 mScreenOrder.add(insertIndex, screenId); 523 addView(newScreen, insertIndex); 524 if (updateDb) { 525 // On bind we don't need to update the screens in the database. 526 mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); 527 } 528 return screenId; 529 } 530 531 public void addCustomContentToLeft(View customContent, CustomContentCallbacks callbacks) { 532 CellLayout customScreen = (CellLayout) 533 mLauncher.getLayoutInflater().inflate(R.layout.workspace_screen, null); 534 535 int spanX = customScreen.getCountX(); 536 int spanY = customScreen.getCountY(); 537 538 CellLayout.LayoutParams lp = new CellLayout.LayoutParams(0, 0, spanX, spanY); 539 lp.canReorder = false; 540 lp.isFullscreen = true; 541 542 customScreen.addViewToCellLayout(customContent, 0, 0, lp, true); 543 544 Rect p = new Rect(); 545 AppWidgetHostView.getDefaultPaddingForWidget(mLauncher, mLauncher.getComponentName(), p); 546 547 mWorkspaceScreens.put(CUSTOM_CONTENT_SCREEN_ID, customScreen); 548 mScreenOrder.add(0, CUSTOM_CONTENT_SCREEN_ID); 549 550 addFullScreenPage(customScreen); 551 552 mCustomContentCallbacks = callbacks; 553 554 // Ensure that the current page and default page are maintained. 555 mDefaultPage++; 556 setCurrentPage(getCurrentPage() + 1); 557 } 558 559 public long commitExtraEmptyScreen() { 560 CellLayout cl = mWorkspaceScreens.get(EXTRA_EMPTY_SCREEN_ID); 561 mWorkspaceScreens.remove(EXTRA_EMPTY_SCREEN_ID); 562 mScreenOrder.remove(EXTRA_EMPTY_SCREEN_ID); 563 564 long newId = LauncherAppState.getInstance().getLauncherProvider().generateNewScreenId(); 565 mWorkspaceScreens.put(newId, cl); 566 mScreenOrder.add(newId); 567 568 addExtraEmptyScreen(); 569 570 // Update the model for the new screen 571 mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); 572 573 return newId; 574 } 575 576 public void addExtraEmptyScreen() { 577 insertNewWorkspaceScreen(EXTRA_EMPTY_SCREEN_ID, false); 578 } 579 580 public CellLayout getScreenWithId(long screenId) { 581 CellLayout layout = mWorkspaceScreens.get(screenId); 582 return layout; 583 } 584 585 public long getIdForScreen(CellLayout layout) { 586 Iterator<Long> iter = mWorkspaceScreens.keySet().iterator(); 587 while (iter.hasNext()) { 588 long id = iter.next(); 589 if (mWorkspaceScreens.get(id) == layout) { 590 return id; 591 } 592 } 593 return -1; 594 } 595 596 public int getPageIndexForScreenId(long screenId) { 597 return indexOfChild(mWorkspaceScreens.get(screenId)); 598 } 599 600 public long getScreenIdForPageIndex(int index) { 601 return mScreenOrder.get(index); 602 } 603 604 ArrayList<Long> getScreenOrder() { 605 return mScreenOrder; 606 } 607 608 public void stripEmptyScreens() { 609 if (isPageMoving()) { 610 mStripScreensOnPageStopMoving = true; 611 return; 612 } 613 614 int currentPage = getNextPage(); 615 ArrayList<Long> removeScreens = new ArrayList<Long>(); 616 for (Long id: mWorkspaceScreens.keySet()) { 617 CellLayout cl = mWorkspaceScreens.get(id); 618 if (id >= 0 && cl.getShortcutsAndWidgets().getChildCount() == 0) { 619 removeScreens.add(id); 620 } 621 } 622 623 int pageShift = 0; 624 for (Long id: removeScreens) { 625 CellLayout cl = mWorkspaceScreens.get(id); 626 mWorkspaceScreens.remove(id); 627 mScreenOrder.remove(id); 628 if (indexOfChild(cl) < currentPage) { 629 pageShift++; 630 } 631 removeView(cl); 632 } 633 634 if (!removeScreens.isEmpty()) { 635 // Update the model if we have changed any screens 636 mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); 637 } 638 639 if (pageShift >= 0) { 640 setCurrentPage(currentPage - pageShift); 641 } 642 } 643 644 // See implementation for parameter definition. 645 void addInScreen(View child, long container, long screenId, 646 int x, int y, int spanX, int spanY) { 647 addInScreen(child, container, screenId, x, y, spanX, spanY, false, false); 648 } 649 650 // At bind time, we use the rank (screenId) to compute x and y for hotseat items. 651 // See implementation for parameter definition. 652 void addInScreenFromBind(View child, long container, long screenId, int x, int y, 653 int spanX, int spanY) { 654 addInScreen(child, container, screenId, x, y, spanX, spanY, false, true); 655 } 656 657 // See implementation for parameter definition. 658 void addInScreen(View child, long container, long screenId, int x, int y, int spanX, int spanY, 659 boolean insert) { 660 addInScreen(child, container, screenId, x, y, spanX, spanY, insert, false); 661 } 662 663 /** 664 * Adds the specified child in the specified screen. The position and dimension of 665 * the child are defined by x, y, spanX and spanY. 666 * 667 * @param child The child to add in one of the workspace's screens. 668 * @param screenId The screen in which to add the child. 669 * @param x The X position of the child in the screen's grid. 670 * @param y The Y position of the child in the screen's grid. 671 * @param spanX The number of cells spanned horizontally by the child. 672 * @param spanY The number of cells spanned vertically by the child. 673 * @param insert When true, the child is inserted at the beginning of the children list. 674 * @param computeXYFromRank When true, we use the rank (stored in screenId) to compute 675 * the x and y position in which to place hotseat items. Otherwise 676 * we use the x and y position to compute the rank. 677 */ 678 void addInScreen(View child, long container, long screenId, int x, int y, int spanX, int spanY, 679 boolean insert, boolean computeXYFromRank) { 680 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 681 if (getScreenWithId(screenId) == null) { 682 Log.e(TAG, "Skipping child, screenId " + screenId + " not found"); 683 return; 684 } 685 } 686 if (screenId == EXTRA_EMPTY_SCREEN_ID) { 687 // This should never happen 688 throw new RuntimeException("Screen id should not be EXTRA_EMPTY_SCREEN_ID"); 689 } 690 691 final CellLayout layout; 692 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 693 layout = mLauncher.getHotseat().getLayout(); 694 child.setOnKeyListener(null); 695 696 // Hide folder title in the hotseat 697 if (child instanceof FolderIcon) { 698 ((FolderIcon) child).setTextVisible(false); 699 } 700 701 if (computeXYFromRank) { 702 x = mLauncher.getHotseat().getCellXFromOrder((int) screenId); 703 y = mLauncher.getHotseat().getCellYFromOrder((int) screenId); 704 } else { 705 screenId = mLauncher.getHotseat().getOrderInHotseat(x, y); 706 } 707 } else { 708 // Show folder title if not in the hotseat 709 if (child instanceof FolderIcon) { 710 ((FolderIcon) child).setTextVisible(true); 711 } 712 layout = getScreenWithId(screenId); 713 child.setOnKeyListener(new IconKeyEventListener()); 714 } 715 716 ViewGroup.LayoutParams genericLp = child.getLayoutParams(); 717 CellLayout.LayoutParams lp; 718 if (genericLp == null || !(genericLp instanceof CellLayout.LayoutParams)) { 719 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 720 } else { 721 lp = (CellLayout.LayoutParams) genericLp; 722 lp.cellX = x; 723 lp.cellY = y; 724 lp.cellHSpan = spanX; 725 lp.cellVSpan = spanY; 726 } 727 728 if (spanX < 0 && spanY < 0) { 729 lp.isLockedToGrid = false; 730 } 731 732 // Get the canonical child id to uniquely represent this view in this screen 733 int childId = LauncherModel.getCellLayoutChildId(container, screenId, x, y, spanX, spanY); 734 boolean markCellsAsOccupied = !(child instanceof Folder); 735 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 736 // TODO: This branch occurs when the workspace is adding views 737 // outside of the defined grid 738 // maybe we should be deleting these items from the LauncherModel? 739 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 740 } 741 742 if (!(child instanceof Folder)) { 743 child.setHapticFeedbackEnabled(false); 744 child.setOnLongClickListener(mLongClickListener); 745 } 746 if (child instanceof DropTarget) { 747 mDragController.addDropTarget((DropTarget) child); 748 } 749 } 750 751 /** 752 * Called directly from a CellLayout (not by the framework), after we've been added as a 753 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 754 * that it should intercept touch events, which is not something that is normally supported. 755 */ 756 @Override 757 public boolean onTouch(View v, MotionEvent event) { 758 return (isSmall() || !isFinishedSwitchingState()); 759 } 760 761 public boolean isSwitchingState() { 762 return mIsSwitchingState; 763 } 764 765 /** This differs from isSwitchingState in that we take into account how far the transition 766 * has completed. */ 767 public boolean isFinishedSwitchingState() { 768 return !mIsSwitchingState || (mTransitionProgress > 0.5f); 769 } 770 771 protected void onWindowVisibilityChanged (int visibility) { 772 mLauncher.onWindowVisibilityChanged(visibility); 773 if (mCustomContentShowing && mCustomContentCallbacks != null) { 774 if (visibility == View.VISIBLE) { 775 mCustomContentCallbacks.onShow(); 776 } else if (visibility == View.GONE) { 777 mCustomContentCallbacks.onHide(); 778 } 779 } 780 } 781 782 @Override 783 public boolean dispatchUnhandledMove(View focused, int direction) { 784 if (isSmall() || !isFinishedSwitchingState()) { 785 // when the home screens are shrunken, shouldn't allow side-scrolling 786 return false; 787 } 788 return super.dispatchUnhandledMove(focused, direction); 789 } 790 791 @Override 792 public boolean onInterceptTouchEvent(MotionEvent ev) { 793 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 794 case MotionEvent.ACTION_DOWN: 795 mXDown = ev.getX(); 796 mYDown = ev.getY(); 797 break; 798 case MotionEvent.ACTION_POINTER_UP: 799 case MotionEvent.ACTION_UP: 800 if (mTouchState == TOUCH_STATE_REST) { 801 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 802 if (!currentPage.lastDownOnOccupiedCell()) { 803 onWallpaperTap(ev); 804 } 805 } 806 } 807 808 if (mLauncher != null && mLauncher.onTouch(this, ev)) { 809 return true; 810 } 811 812 return super.onInterceptTouchEvent(ev); 813 } 814 815 protected void reinflateWidgetsIfNecessary() { 816 final int clCount = getChildCount(); 817 for (int i = 0; i < clCount; i++) { 818 CellLayout cl = (CellLayout) getChildAt(i); 819 ShortcutAndWidgetContainer swc = cl.getShortcutsAndWidgets(); 820 final int itemCount = swc.getChildCount(); 821 for (int j = 0; j < itemCount; j++) { 822 View v = swc.getChildAt(j); 823 824 if (v.getTag() instanceof LauncherAppWidgetInfo) { 825 LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) v.getTag(); 826 LauncherAppWidgetHostView lahv = (LauncherAppWidgetHostView) info.hostView; 827 if (lahv != null && lahv.orientationChangedSincedInflation()) { 828 mLauncher.removeAppWidget(info); 829 // Remove the current widget which is inflated with the wrong orientation 830 cl.removeView(lahv); 831 mLauncher.bindAppWidget(info); 832 } 833 } 834 } 835 } 836 } 837 838 @Override 839 protected void determineScrollingStart(MotionEvent ev) { 840 if (isSmall()) return; 841 if (!isFinishedSwitchingState()) return; 842 843 float deltaX = Math.abs(ev.getX() - mXDown); 844 float deltaY = Math.abs(ev.getY() - mYDown); 845 846 if (Float.compare(deltaX, 0f) == 0) return; 847 848 float slope = deltaY / deltaX; 849 float theta = (float) Math.atan(slope); 850 851 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 852 cancelCurrentPageLongPress(); 853 } 854 855 if (theta > MAX_SWIPE_ANGLE) { 856 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 857 return; 858 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 859 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 860 // increase the touch slop to make it harder to begin scrolling the workspace. This 861 // results in vertically scrolling widgets to more easily. The higher the angle, the 862 // more we increase touch slop. 863 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 864 float extraRatio = (float) 865 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 866 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 867 } else { 868 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 869 super.determineScrollingStart(ev); 870 } 871 } 872 873 protected void onPageBeginMoving() { 874 super.onPageBeginMoving(); 875 876 if (isHardwareAccelerated()) { 877 updateChildrenLayersEnabled(false); 878 } else { 879 if (mNextPage != INVALID_PAGE) { 880 // we're snapping to a particular screen 881 enableChildrenCache(mCurrentPage, mNextPage); 882 } else { 883 // this is when user is actively dragging a particular screen, they might 884 // swipe it either left or right (but we won't advance by more than one screen) 885 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 886 } 887 } 888 889 // Only show page outlines as we pan if we are on large screen 890 if (LauncherAppState.getInstance().isScreenLarge()) { 891 showOutlines(); 892 mIsStaticWallpaper = mWallpaperManager.getWallpaperInfo() == null; 893 } 894 895 // If we are not fading in adjacent screens, we still need to restore the alpha in case the 896 // user scrolls while we are transitioning (should not affect dispatchDraw optimizations) 897 if (!mWorkspaceFadeInAdjacentScreens) { 898 for (int i = 0; i < getChildCount(); ++i) { 899 ((CellLayout) getPageAt(i)).setShortcutAndWidgetAlpha(1f); 900 } 901 } 902 } 903 904 protected void onPageEndMoving() { 905 super.onPageEndMoving(); 906 907 if (isHardwareAccelerated()) { 908 updateChildrenLayersEnabled(false); 909 } else { 910 clearChildrenCache(); 911 } 912 913 914 if (mDragController.isDragging()) { 915 if (isSmall()) { 916 // If we are in springloaded mode, then force an event to check if the current touch 917 // is under a new page (to scroll to) 918 mDragController.forceTouchMove(); 919 } 920 } else { 921 // If we are not mid-dragging, hide the page outlines if we are on a large screen 922 if (LauncherAppState.getInstance().isScreenLarge()) { 923 hideOutlines(); 924 } 925 } 926 927 if (mDelayedResizeRunnable != null) { 928 mDelayedResizeRunnable.run(); 929 mDelayedResizeRunnable = null; 930 } 931 932 if (mDelayedSnapToPageRunnable != null) { 933 mDelayedSnapToPageRunnable.run(); 934 mDelayedSnapToPageRunnable = null; 935 } 936 if (mStripScreensOnPageStopMoving) { 937 stripEmptyScreens(); 938 mStripScreensOnPageStopMoving = false; 939 } 940 941 if (hasCustomContent() && getNextPage() == 0 && !mCustomContentShowing) { 942 mCustomContentShowing = true; 943 if (mCustomContentCallbacks != null) { 944 mCustomContentCallbacks.onShow(); 945 } 946 } else if (hasCustomContent() && getNextPage() != 0 && mCustomContentShowing) { 947 mCustomContentShowing = false; 948 if (mCustomContentCallbacks != null) { 949 mCustomContentCallbacks.onHide(); 950 mLauncher.resetQSBScroll(); 951 } 952 } 953 } 954 955 @Override 956 protected void notifyPageSwitchListener() { 957 super.notifyPageSwitchListener(); 958 Launcher.setScreen(mCurrentPage); 959 }; 960 961 // As a ratio of screen height, the total distance we want the parallax effect to span 962 // horizontally 963 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 964 float aspectRatio = width / (float) height; 965 966 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 967 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 968 // We will use these two data points to extrapolate how much the wallpaper parallax effect 969 // to span (ie travel) at any aspect ratio: 970 971 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 972 final float ASPECT_RATIO_PORTRAIT = 10/16f; 973 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 974 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 975 976 // To find out the desired width at different aspect ratios, we use the following two 977 // formulas, where the coefficient on x is the aspect ratio (width/height): 978 // (16/10)x + y = 1.5 979 // (10/16)x + y = 1.2 980 // We solve for x and y and end up with a final formula: 981 final float x = 982 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 983 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 984 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 985 return x * aspectRatio + y; 986 } 987 988 protected void setWallpaperDimension() { 989 Point minDims = new Point(); 990 Point maxDims = new Point(); 991 mLauncher.getWindowManager().getDefaultDisplay().getCurrentSizeRange(minDims, maxDims); 992 993 final int maxDim = Math.max(maxDims.x, maxDims.y); 994 final int minDim = Math.min(minDims.x, minDims.y); 995 996 // We need to ensure that there is enough extra space in the wallpaper for the intended 997 // parallax effects 998 if (LauncherAppState.getInstance().isScreenLarge()) { 999 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 1000 mWallpaperHeight = maxDim; 1001 } else { 1002 mWallpaperWidth = Math.max((int) (minDim * WALLPAPER_SCREENS_SPAN), maxDim); 1003 mWallpaperHeight = maxDim; 1004 } 1005 new Thread("setWallpaperDimension") { 1006 public void run() { 1007 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 1008 } 1009 }.start(); 1010 } 1011 1012 private void syncWallpaperOffsetWithScroll() { 1013 final boolean enableWallpaperEffects = isHardwareAccelerated(); 1014 if (enableWallpaperEffects) { 1015 // TODO: figure out what to do about parallax, for now disable it 1016 //mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 1017 } 1018 } 1019 1020 public void updateWallpaperOffsetImmediately() { 1021 mUpdateWallpaperOffsetImmediately = true; 1022 } 1023 1024 private void updateWallpaperOffsets() { 1025 boolean updateNow = false; 1026 boolean keepUpdating = true; 1027 if (mUpdateWallpaperOffsetImmediately) { 1028 updateNow = true; 1029 keepUpdating = false; 1030 mWallpaperOffset.jumpToFinal(); 1031 mUpdateWallpaperOffsetImmediately = false; 1032 } else { 1033 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 1034 } 1035 if (updateNow) { 1036 if (mWindowToken != null) { 1037 mWallpaperManager.setWallpaperOffsets(mWindowToken, 1038 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 1039 } 1040 } 1041 if (keepUpdating) { 1042 invalidate(); 1043 } 1044 } 1045 1046 protected void snapToPage(int whichPage, Runnable r) { 1047 if (mDelayedSnapToPageRunnable != null) { 1048 mDelayedSnapToPageRunnable.run(); 1049 } 1050 mDelayedSnapToPageRunnable = r; 1051 snapToPage(whichPage, SLOW_PAGE_SNAP_ANIMATION_DURATION); 1052 } 1053 1054 protected void snapToScreenId(long screenId, Runnable r) { 1055 snapToPage(getPageIndexForScreenId(screenId), r); 1056 } 1057 1058 class WallpaperOffsetInterpolator { 1059 float mFinalHorizontalWallpaperOffset = 0.0f; 1060 float mFinalVerticalWallpaperOffset = 0.5f; 1061 float mHorizontalWallpaperOffset = 0.0f; 1062 float mVerticalWallpaperOffset = 0.5f; 1063 long mLastWallpaperOffsetUpdateTime; 1064 boolean mIsMovingFast; 1065 boolean mOverrideHorizontalCatchupConstant; 1066 float mHorizontalCatchupConstant = 0.35f; 1067 float mVerticalCatchupConstant = 0.35f; 1068 1069 public WallpaperOffsetInterpolator() { 1070 } 1071 1072 public void setOverrideHorizontalCatchupConstant(boolean override) { 1073 mOverrideHorizontalCatchupConstant = override; 1074 } 1075 1076 public void setHorizontalCatchupConstant(float f) { 1077 mHorizontalCatchupConstant = f; 1078 } 1079 1080 public void setVerticalCatchupConstant(float f) { 1081 mVerticalCatchupConstant = f; 1082 } 1083 1084 public boolean computeScrollOffset() { 1085 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 1086 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 1087 mIsMovingFast = false; 1088 return false; 1089 } 1090 boolean isLandscape = mDisplaySize.x > mDisplaySize.y; 1091 1092 long currentTime = System.currentTimeMillis(); 1093 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 1094 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 1095 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 1096 1097 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 1098 if (!mIsMovingFast && xdiff > 0.07) { 1099 mIsMovingFast = true; 1100 } 1101 1102 float fractionToCatchUpIn1MsHorizontal; 1103 if (mOverrideHorizontalCatchupConstant) { 1104 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 1105 } else if (mIsMovingFast) { 1106 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 1107 } else { 1108 // slow 1109 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 1110 } 1111 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 1112 1113 fractionToCatchUpIn1MsHorizontal /= 33f; 1114 fractionToCatchUpIn1MsVertical /= 33f; 1115 1116 final float UPDATE_THRESHOLD = 0.00001f; 1117 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 1118 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 1119 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 1120 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 1121 1122 // Don't have any lag between workspace and wallpaper on non-large devices 1123 if (!LauncherAppState.getInstance().isScreenLarge() || jumpToFinalValue) { 1124 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 1125 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 1126 } else { 1127 float percentToCatchUpVertical = 1128 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 1129 float percentToCatchUpHorizontal = 1130 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 1131 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 1132 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 1133 } 1134 1135 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 1136 return true; 1137 } 1138 1139 public float getCurrX() { 1140 return mHorizontalWallpaperOffset; 1141 } 1142 1143 public float getFinalX() { 1144 return mFinalHorizontalWallpaperOffset; 1145 } 1146 1147 public float getCurrY() { 1148 return mVerticalWallpaperOffset; 1149 } 1150 1151 public float getFinalY() { 1152 return mFinalVerticalWallpaperOffset; 1153 } 1154 1155 public void setFinalX(float x) { 1156 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 1157 } 1158 1159 public void setFinalY(float y) { 1160 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 1161 } 1162 1163 public void jumpToFinal() { 1164 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 1165 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 1166 } 1167 } 1168 1169 @Override 1170 public void computeScroll() { 1171 super.computeScroll(); 1172 syncWallpaperOffsetWithScroll(); 1173 } 1174 1175 void showOutlines() { 1176 if (!isSmall() && !mIsSwitchingState) { 1177 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1178 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1179 mChildrenOutlineFadeInAnimation = LauncherAnimUtils.ofFloat(this, "childrenOutlineAlpha", 1.0f); 1180 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 1181 mChildrenOutlineFadeInAnimation.start(); 1182 } 1183 } 1184 1185 void hideOutlines() { 1186 if (!isSmall() && !mIsSwitchingState) { 1187 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1188 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1189 mChildrenOutlineFadeOutAnimation = LauncherAnimUtils.ofFloat(this, "childrenOutlineAlpha", 0.0f); 1190 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 1191 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 1192 mChildrenOutlineFadeOutAnimation.start(); 1193 } 1194 } 1195 1196 public void showOutlinesTemporarily() { 1197 if (!mIsPageMoving && !isTouchActive()) { 1198 snapToPage(mCurrentPage); 1199 } 1200 } 1201 1202 public void setChildrenOutlineAlpha(float alpha) { 1203 mChildrenOutlineAlpha = alpha; 1204 for (int i = 0; i < getChildCount(); i++) { 1205 CellLayout cl = (CellLayout) getChildAt(i); 1206 cl.setBackgroundAlpha(alpha); 1207 } 1208 } 1209 1210 public float getChildrenOutlineAlpha() { 1211 return mChildrenOutlineAlpha; 1212 } 1213 1214 void disableBackground() { 1215 mDrawBackground = false; 1216 } 1217 void enableBackground() { 1218 mDrawBackground = true; 1219 } 1220 1221 private void animateBackgroundGradient(float finalAlpha, boolean animated) { 1222 if (mBackground == null) return; 1223 if (mBackgroundFadeInAnimation != null) { 1224 mBackgroundFadeInAnimation.cancel(); 1225 mBackgroundFadeInAnimation = null; 1226 } 1227 if (mBackgroundFadeOutAnimation != null) { 1228 mBackgroundFadeOutAnimation.cancel(); 1229 mBackgroundFadeOutAnimation = null; 1230 } 1231 float startAlpha = getBackgroundAlpha(); 1232 if (finalAlpha != startAlpha) { 1233 if (animated) { 1234 mBackgroundFadeOutAnimation = 1235 LauncherAnimUtils.ofFloat(this, startAlpha, finalAlpha); 1236 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1237 public void onAnimationUpdate(ValueAnimator animation) { 1238 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1239 } 1240 }); 1241 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1242 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1243 mBackgroundFadeOutAnimation.start(); 1244 } else { 1245 setBackgroundAlpha(finalAlpha); 1246 } 1247 } 1248 } 1249 1250 public void setBackgroundAlpha(float alpha) { 1251 if (alpha != mBackgroundAlpha) { 1252 mBackgroundAlpha = alpha; 1253 invalidate(); 1254 } 1255 } 1256 1257 public float getBackgroundAlpha() { 1258 return mBackgroundAlpha; 1259 } 1260 1261 float backgroundAlphaInterpolator(float r) { 1262 float pivotA = 0.1f; 1263 float pivotB = 0.4f; 1264 if (r < pivotA) { 1265 return 0; 1266 } else if (r > pivotB) { 1267 return 1.0f; 1268 } else { 1269 return (r - pivotA)/(pivotB - pivotA); 1270 } 1271 } 1272 1273 private void updatePageAlphaValues(int screenCenter) { 1274 boolean isInOverscroll = mOverScrollX < 0 || mOverScrollX > mMaxScrollX; 1275 if (mWorkspaceFadeInAdjacentScreens && 1276 mState == State.NORMAL && 1277 !mIsSwitchingState && 1278 !isInOverscroll) { 1279 for (int i = 0; i < getChildCount(); i++) { 1280 CellLayout child = (CellLayout) getChildAt(i); 1281 if (child != null) { 1282 float scrollProgress = getScrollProgress(screenCenter, child, i); 1283 float alpha = 1 - Math.abs(scrollProgress); 1284 child.getShortcutsAndWidgets().setAlpha(alpha); 1285 if (!mIsDragOccuring) { 1286 child.setBackgroundAlphaMultiplier( 1287 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1288 } else { 1289 child.setBackgroundAlphaMultiplier(1f); 1290 } 1291 } 1292 } 1293 } 1294 } 1295 1296 private void setChildrenBackgroundAlphaMultipliers(float a) { 1297 for (int i = 0; i < getChildCount(); i++) { 1298 CellLayout child = (CellLayout) getChildAt(i); 1299 child.setBackgroundAlphaMultiplier(a); 1300 } 1301 } 1302 1303 private boolean hasCustomContent() { 1304 return (mScreenOrder.size() > 0 && mScreenOrder.get(0) == CUSTOM_CONTENT_SCREEN_ID); 1305 } 1306 1307 public boolean isOnOrMovingToCustomContent() { 1308 return hasCustomContent() && getNextPage() == 0; 1309 } 1310 1311 private void updateStateForCustomContent(int screenCenter) { 1312 if (hasCustomContent()) { 1313 int index = mScreenOrder.indexOf(CUSTOM_CONTENT_SCREEN_ID); 1314 1315 int scrollDelta = getScrollForPage(index + 1) - getScrollX(); 1316 1317 float progress = (1.0f * scrollDelta) / 1318 (getScrollForPage(index + 1) - getScrollForPage(index)); 1319 progress = Math.max(0, progress); 1320 1321 setBackgroundAlpha(progress * 0.8f); 1322 float height = getViewportHeight(); 1323 if (getPageIndicator() != null) { 1324 height -= getPageIndicator().getTop(); 1325 } else if (mLauncher.getHotseat() != null) { 1326 height -= mLauncher.getHotseat().getTop(); 1327 } 1328 float transY = progress * height; 1329 1330 if (mLauncher.getHotseat() != null) { 1331 mLauncher.getHotseat().setTranslationY(transY); 1332 mLauncher.getHotseat().setAlpha(1 - progress); 1333 } 1334 if (getPageIndicator() != null) { 1335 getPageIndicator().setAlpha(1 - progress); 1336 } 1337 } 1338 } 1339 1340 @Override 1341 protected void screenScrolled(int screenCenter) { 1342 final boolean isRtl = isLayoutRtl(); 1343 super.screenScrolled(screenCenter); 1344 1345 updatePageAlphaValues(screenCenter); 1346 updateStateForCustomContent(screenCenter); 1347 enableHwLayersOnVisiblePages(); 1348 1349 if ((mOverScrollX < 0 && !hasCustomContent()) || mOverScrollX > mMaxScrollX) { 1350 int index = 0; 1351 float pivotX = 0f; 1352 final float leftBiasedPivot = 0.25f; 1353 final float rightBiasedPivot = 0.75f; 1354 final int lowerIndex = 0; 1355 final int upperIndex = getChildCount() - 1; 1356 if (isRtl) { 1357 index = mOverScrollX < 0 ? upperIndex : lowerIndex; 1358 pivotX = (index == 0 ? leftBiasedPivot : rightBiasedPivot); 1359 } else { 1360 index = mOverScrollX < 0 ? lowerIndex : upperIndex; 1361 pivotX = (index == 0 ? rightBiasedPivot : leftBiasedPivot); 1362 } 1363 1364 CellLayout cl = (CellLayout) getChildAt(index); 1365 float scrollProgress = getScrollProgress(screenCenter, cl, index); 1366 final boolean isLeftPage = (isRtl ? index > 0 : index == 0); 1367 cl.setOverScrollAmount(Math.abs(scrollProgress), isLeftPage); 1368 float rotation = -WORKSPACE_OVERSCROLL_ROTATION * scrollProgress; 1369 cl.setRotationY(rotation); 1370 setFadeForOverScroll(Math.abs(scrollProgress)); 1371 if (!mOverscrollTransformsSet) { 1372 mOverscrollTransformsSet = true; 1373 cl.setCameraDistance(mDensity * mCameraDistance); 1374 cl.setPivotX(cl.getMeasuredWidth() * pivotX); 1375 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1376 cl.setOverscrollTransformsDirty(true); 1377 } 1378 } else { 1379 if (mOverscrollFade != 0) { 1380 setFadeForOverScroll(0); 1381 } 1382 if (mOverscrollTransformsSet) { 1383 mOverscrollTransformsSet = false; 1384 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1385 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1386 } 1387 } 1388 } 1389 1390 @Override 1391 protected void overScroll(float amount) { 1392 acceleratedOverScroll(amount); 1393 } 1394 1395 protected void onAttachedToWindow() { 1396 super.onAttachedToWindow(); 1397 mWindowToken = getWindowToken(); 1398 computeScroll(); 1399 mDragController.setWindowToken(mWindowToken); 1400 } 1401 1402 protected void onDetachedFromWindow() { 1403 mWindowToken = null; 1404 } 1405 1406 @Override 1407 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1408 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1409 mUpdateWallpaperOffsetImmediately = true; 1410 } 1411 super.onLayout(changed, left, top, right, bottom); 1412 } 1413 1414 @Override 1415 protected void onDraw(Canvas canvas) { 1416 updateWallpaperOffsets(); 1417 1418 // Draw the background gradient if necessary 1419 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1420 int alpha = (int) (mBackgroundAlpha * 255); 1421 mBackground.setAlpha(alpha); 1422 mBackground.setBounds(getScrollX(), 0, getScrollX() + getMeasuredWidth(), 1423 getMeasuredHeight()); 1424 mBackground.draw(canvas); 1425 } 1426 1427 super.onDraw(canvas); 1428 1429 // Call back to LauncherModel to finish binding after the first draw 1430 post(mBindPages); 1431 } 1432 1433 boolean isDrawingBackgroundGradient() { 1434 return (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground); 1435 } 1436 1437 @Override 1438 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1439 if (!mLauncher.isAllAppsVisible()) { 1440 final Folder openFolder = getOpenFolder(); 1441 if (openFolder != null) { 1442 return openFolder.requestFocus(direction, previouslyFocusedRect); 1443 } else { 1444 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1445 } 1446 } 1447 return false; 1448 } 1449 1450 @Override 1451 public int getDescendantFocusability() { 1452 if (isSmall()) { 1453 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1454 } 1455 return super.getDescendantFocusability(); 1456 } 1457 1458 @Override 1459 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1460 if (!mLauncher.isAllAppsVisible()) { 1461 final Folder openFolder = getOpenFolder(); 1462 if (openFolder != null) { 1463 openFolder.addFocusables(views, direction); 1464 } else { 1465 super.addFocusables(views, direction, focusableMode); 1466 } 1467 } 1468 } 1469 1470 public boolean isSmall() { 1471 return mState == State.SMALL || mState == State.SPRING_LOADED; 1472 } 1473 1474 void enableChildrenCache(int fromPage, int toPage) { 1475 if (fromPage > toPage) { 1476 final int temp = fromPage; 1477 fromPage = toPage; 1478 toPage = temp; 1479 } 1480 1481 final int screenCount = getChildCount(); 1482 1483 fromPage = Math.max(fromPage, 0); 1484 toPage = Math.min(toPage, screenCount - 1); 1485 1486 for (int i = fromPage; i <= toPage; i++) { 1487 final CellLayout layout = (CellLayout) getChildAt(i); 1488 layout.setChildrenDrawnWithCacheEnabled(true); 1489 layout.setChildrenDrawingCacheEnabled(true); 1490 } 1491 } 1492 1493 void clearChildrenCache() { 1494 final int screenCount = getChildCount(); 1495 for (int i = 0; i < screenCount; i++) { 1496 final CellLayout layout = (CellLayout) getChildAt(i); 1497 layout.setChildrenDrawnWithCacheEnabled(false); 1498 // In software mode, we don't want the items to continue to be drawn into bitmaps 1499 if (!isHardwareAccelerated()) { 1500 layout.setChildrenDrawingCacheEnabled(false); 1501 } 1502 } 1503 } 1504 1505 1506 private void updateChildrenLayersEnabled(boolean force) { 1507 boolean small = mState == State.SMALL || mIsSwitchingState; 1508 boolean enableChildrenLayers = force || small || mAnimatingViewIntoPlace || isPageMoving(); 1509 1510 if (enableChildrenLayers != mChildrenLayersEnabled) { 1511 mChildrenLayersEnabled = enableChildrenLayers; 1512 if (mChildrenLayersEnabled) { 1513 enableHwLayersOnVisiblePages(); 1514 } else { 1515 for (int i = 0; i < getPageCount(); i++) { 1516 final CellLayout cl = (CellLayout) getChildAt(i); 1517 cl.disableHardwareLayers(); 1518 } 1519 } 1520 } 1521 } 1522 1523 private void enableHwLayersOnVisiblePages() { 1524 if (mChildrenLayersEnabled) { 1525 final int screenCount = getChildCount(); 1526 getVisiblePages(mTempVisiblePagesRange); 1527 int leftScreen = mTempVisiblePagesRange[0]; 1528 int rightScreen = mTempVisiblePagesRange[1]; 1529 if (leftScreen == rightScreen) { 1530 // make sure we're caching at least two pages always 1531 if (rightScreen < screenCount - 1) { 1532 rightScreen++; 1533 } else if (leftScreen > 0) { 1534 leftScreen--; 1535 } 1536 } 1537 for (int i = 0; i < screenCount; i++) { 1538 final CellLayout layout = (CellLayout) getPageAt(i); 1539 if (!(leftScreen <= i && i <= rightScreen && shouldDrawChild(layout))) { 1540 layout.disableHardwareLayers(); 1541 } 1542 } 1543 for (int i = 0; i < screenCount; i++) { 1544 final CellLayout layout = (CellLayout) getPageAt(i); 1545 if (leftScreen <= i && i <= rightScreen && shouldDrawChild(layout)) { 1546 layout.enableHardwareLayers(); 1547 } 1548 } 1549 } 1550 } 1551 1552 public void buildPageHardwareLayers() { 1553 // force layers to be enabled just for the call to buildLayer 1554 updateChildrenLayersEnabled(true); 1555 if (getWindowToken() != null) { 1556 final int childCount = getChildCount(); 1557 for (int i = 0; i < childCount; i++) { 1558 CellLayout cl = (CellLayout) getChildAt(i); 1559 cl.buildHardwareLayer(); 1560 } 1561 } 1562 updateChildrenLayersEnabled(false); 1563 } 1564 1565 protected void onWallpaperTap(MotionEvent ev) { 1566 final int[] position = mTempCell; 1567 getLocationOnScreen(position); 1568 1569 int pointerIndex = ev.getActionIndex(); 1570 position[0] += (int) ev.getX(pointerIndex); 1571 position[1] += (int) ev.getY(pointerIndex); 1572 1573 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1574 ev.getAction() == MotionEvent.ACTION_UP 1575 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1576 position[0], position[1], 0, null); 1577 } 1578 1579 /* 1580 * This interpolator emulates the rate at which the perceived scale of an object changes 1581 * as its distance from a camera increases. When this interpolator is applied to a scale 1582 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1583 * from the camera. 1584 */ 1585 static class ZInterpolator implements TimeInterpolator { 1586 private float focalLength; 1587 1588 public ZInterpolator(float foc) { 1589 focalLength = foc; 1590 } 1591 1592 public float getInterpolation(float input) { 1593 return (1.0f - focalLength / (focalLength + input)) / 1594 (1.0f - focalLength / (focalLength + 1.0f)); 1595 } 1596 } 1597 1598 /* 1599 * The exact reverse of ZInterpolator. 1600 */ 1601 static class InverseZInterpolator implements TimeInterpolator { 1602 private ZInterpolator zInterpolator; 1603 public InverseZInterpolator(float foc) { 1604 zInterpolator = new ZInterpolator(foc); 1605 } 1606 public float getInterpolation(float input) { 1607 return 1 - zInterpolator.getInterpolation(1 - input); 1608 } 1609 } 1610 1611 /* 1612 * ZInterpolator compounded with an ease-out. 1613 */ 1614 static class ZoomOutInterpolator implements TimeInterpolator { 1615 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(0.75f); 1616 private final ZInterpolator zInterpolator = new ZInterpolator(0.13f); 1617 1618 public float getInterpolation(float input) { 1619 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1620 } 1621 } 1622 1623 /* 1624 * InvereZInterpolator compounded with an ease-out. 1625 */ 1626 static class ZoomInInterpolator implements TimeInterpolator { 1627 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1628 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1629 1630 public float getInterpolation(float input) { 1631 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1632 } 1633 } 1634 1635 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1636 1637 /* 1638 * 1639 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1640 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1641 * 1642 * These methods mark the appropriate pages as accepting drops (which alters their visual 1643 * appearance). 1644 * 1645 */ 1646 public void onDragStartedWithItem(View v) { 1647 final Canvas canvas = new Canvas(); 1648 1649 // The outline is used to visualize where the item will land if dropped 1650 mDragOutline = createDragOutline(v, canvas, DRAG_BITMAP_PADDING); 1651 } 1652 1653 public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, boolean clipAlpha) { 1654 final Canvas canvas = new Canvas(); 1655 1656 int[] size = estimateItemSize(info.spanX, info.spanY, info, false); 1657 1658 // The outline is used to visualize where the item will land if dropped 1659 mDragOutline = createDragOutline(b, canvas, DRAG_BITMAP_PADDING, size[0], 1660 size[1], clipAlpha); 1661 } 1662 1663 public void exitWidgetResizeMode() { 1664 DragLayer dragLayer = mLauncher.getDragLayer(); 1665 dragLayer.clearAllResizeFrames(); 1666 } 1667 1668 private void initAnimationArrays() { 1669 final int childCount = getChildCount(); 1670 if (mLastChildCount == childCount) return; 1671 1672 mOldBackgroundAlphas = new float[childCount]; 1673 mOldAlphas = new float[childCount]; 1674 mNewBackgroundAlphas = new float[childCount]; 1675 mNewAlphas = new float[childCount]; 1676 } 1677 1678 Animator getChangeStateAnimation(final State state, boolean animated) { 1679 return getChangeStateAnimation(state, animated, 0); 1680 } 1681 1682 void getReorderablePages(int[] range) { 1683 int count = mScreenOrder.size(); 1684 1685 int start = -1; 1686 int end = -1; 1687 // 1688 for (int i = 0; i < count; i++) { 1689 if (start < 0 && mScreenOrder.get(i) >= 0) { 1690 start = i; 1691 } 1692 if (start >=0 && mScreenOrder.get(i) >= 0) { 1693 end = i; 1694 } 1695 } 1696 range[0] = start; 1697 range[1] = end; 1698 } 1699 1700 protected void onStartReordering() { 1701 super.onStartReordering(); 1702 int count = getChildCount(); 1703 for (int i = 0; i < count; i++) { 1704 ((CellLayout) getChildAt(i)).setUseActiveGlowBackground(true); 1705 } 1706 showOutlines(); 1707 1708 // Reordering handles its own animations, disable the automatic ones. 1709 setLayoutTransition(null); 1710 } 1711 1712 protected void onEndReordering() { 1713 super.onEndReordering(); 1714 int count = getChildCount(); 1715 for (int i = 0; i < count; i++) { 1716 ((CellLayout) getChildAt(i)).setUseActiveGlowBackground(false); 1717 } 1718 hideOutlines(); 1719 1720 mScreenOrder.clear(); 1721 for (int i = 0; i < count; i++) { 1722 CellLayout cl = ((CellLayout) getChildAt(i)); 1723 mScreenOrder.add(getIdForScreen(cl)); 1724 } 1725 mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); 1726 1727 // Re-enable auto layout transitions for page deletion. 1728 setLayoutTransition(mLayoutTransition); 1729 } 1730 1731 Animator getChangeStateAnimation(final State state, boolean animated, int delay) { 1732 if (mState == state) { 1733 return null; 1734 } 1735 1736 // Initialize animation arrays for the first time if necessary 1737 initAnimationArrays(); 1738 1739 AnimatorSet anim = animated ? LauncherAnimUtils.createAnimatorSet() : null; 1740 1741 // Stop any scrolling, move to the current page right away 1742 setCurrentPage(getNextPage()); 1743 1744 final State oldState = mState; 1745 final boolean oldStateIsNormal = (oldState == State.NORMAL); 1746 final boolean oldStateIsSpringLoaded = (oldState == State.SPRING_LOADED); 1747 final boolean oldStateIsSmall = (oldState == State.SMALL); 1748 mState = state; 1749 final boolean stateIsNormal = (state == State.NORMAL); 1750 final boolean stateIsSpringLoaded = (state == State.SPRING_LOADED); 1751 final boolean stateIsSmall = (state == State.SMALL); 1752 float finalBackgroundAlpha = stateIsSpringLoaded ? 1.0f : 0f; 1753 boolean zoomIn = true; 1754 mNewScale = 1.0f; 1755 1756 if (state != State.NORMAL) { 1757 mNewScale = mSpringLoadedShrinkFactor - (stateIsSmall ? 0.1f : 0); 1758 if (oldStateIsNormal && stateIsSmall) { 1759 zoomIn = false; 1760 updateChildrenLayersEnabled(false); 1761 } else { 1762 finalBackgroundAlpha = 1.0f; 1763 } 1764 } 1765 final int duration = zoomIn ? 1766 getResources().getInteger(R.integer.config_workspaceUnshrinkTime) : 1767 getResources().getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1768 for (int i = 0; i < getChildCount(); i++) { 1769 final CellLayout cl = (CellLayout) getChildAt(i); 1770 float finalAlpha = (!mWorkspaceFadeInAdjacentScreens || stateIsSpringLoaded || 1771 (i == mCurrentPage)) ? 1f : 0f; 1772 float currentAlpha = cl.getShortcutsAndWidgets().getAlpha(); 1773 float initialAlpha = currentAlpha; 1774 1775 // Determine the pages alpha during the state transition 1776 if ((oldStateIsSmall && stateIsNormal) || 1777 (oldStateIsNormal && stateIsSmall)) { 1778 // To/from workspace - only show the current page unless the transition is not 1779 // animated and the animation end callback below doesn't run; 1780 // or, if we're in spring-loaded mode 1781 if (i == mCurrentPage || !animated || oldStateIsSpringLoaded) { 1782 finalAlpha = 1f; 1783 } else { 1784 initialAlpha = 0f; 1785 finalAlpha = 0f; 1786 } 1787 } 1788 1789 mOldAlphas[i] = initialAlpha; 1790 mNewAlphas[i] = finalAlpha; 1791 if (animated) { 1792 mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1793 mNewBackgroundAlphas[i] = finalBackgroundAlpha; 1794 } else { 1795 setScaleX(mNewScale); 1796 setScaleY(mNewScale); 1797 cl.setBackgroundAlpha(finalBackgroundAlpha); 1798 cl.setShortcutAndWidgetAlpha(finalAlpha); 1799 } 1800 } 1801 1802 if (animated) { 1803 LauncherViewPropertyAnimator scale = new LauncherViewPropertyAnimator(this); 1804 scale.scaleX(mNewScale) 1805 .scaleY(mNewScale) 1806 .setInterpolator(mZoomInInterpolator); 1807 anim.play(scale); 1808 for (int index = 0; index < getChildCount(); index++) { 1809 final int i = index; 1810 final CellLayout cl = (CellLayout) getChildAt(i); 1811 float currentAlpha = cl.getShortcutsAndWidgets().getAlpha(); 1812 if (mOldAlphas[i] == 0 && mNewAlphas[i] == 0) { 1813 cl.setBackgroundAlpha(mNewBackgroundAlphas[i]); 1814 cl.setShortcutAndWidgetAlpha(mNewAlphas[i]); 1815 } else { 1816 1817 if (mOldAlphas[i] != mNewAlphas[i] || currentAlpha != mNewAlphas[i]) { 1818 LauncherViewPropertyAnimator alphaAnim = 1819 new LauncherViewPropertyAnimator(cl.getShortcutsAndWidgets()); 1820 alphaAnim.alpha(mNewAlphas[i]) 1821 .setDuration(duration) 1822 .setInterpolator(mZoomInInterpolator); 1823 anim.play(alphaAnim); 1824 } 1825 if (mOldBackgroundAlphas[i] != 0 || 1826 mNewBackgroundAlphas[i] != 0) { 1827 ValueAnimator bgAnim = 1828 LauncherAnimUtils.ofFloat(cl, 0f, 1f).setDuration(duration); 1829 bgAnim.setInterpolator(mZoomInInterpolator); 1830 bgAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1831 public void onAnimationUpdate(float a, float b) { 1832 cl.setBackgroundAlpha( 1833 a * mOldBackgroundAlphas[i] + 1834 b * mNewBackgroundAlphas[i]); 1835 } 1836 }); 1837 anim.play(bgAnim); 1838 } 1839 } 1840 } 1841 anim.setStartDelay(delay); 1842 } 1843 1844 if (stateIsSpringLoaded) { 1845 // Right now we're covered by Apps Customize 1846 // Show the background gradient immediately, so the gradient will 1847 // be showing once AppsCustomize disappears 1848 animateBackgroundGradient(getResources().getInteger( 1849 R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, false); 1850 } else { 1851 // Fade the background gradient away 1852 animateBackgroundGradient(0f, true); 1853 } 1854 return anim; 1855 } 1856 1857 @Override 1858 public void onLauncherTransitionPrepare(Launcher l, boolean animated, boolean toWorkspace) { 1859 mIsSwitchingState = true; 1860 updateChildrenLayersEnabled(false); 1861 } 1862 1863 @Override 1864 public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) { 1865 } 1866 1867 @Override 1868 public void onLauncherTransitionStep(Launcher l, float t) { 1869 mTransitionProgress = t; 1870 } 1871 1872 @Override 1873 public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) { 1874 mIsSwitchingState = false; 1875 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 1876 updateChildrenLayersEnabled(false); 1877 // The code in getChangeStateAnimation to determine initialAlpha and finalAlpha will ensure 1878 // ensure that only the current page is visible during (and subsequently, after) the 1879 // transition animation. If fade adjacent pages is disabled, then re-enable the page 1880 // visibility after the transition animation. 1881 if (!mWorkspaceFadeInAdjacentScreens) { 1882 for (int i = 0; i < getChildCount(); i++) { 1883 final CellLayout cl = (CellLayout) getChildAt(i); 1884 cl.setShortcutAndWidgetAlpha(1f); 1885 } 1886 } 1887 } 1888 1889 @Override 1890 public View getContent() { 1891 return this; 1892 } 1893 1894 /** 1895 * Draw the View v into the given Canvas. 1896 * 1897 * @param v the view to draw 1898 * @param destCanvas the canvas to draw on 1899 * @param padding the horizontal and vertical padding to use when drawing 1900 */ 1901 private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { 1902 final Rect clipRect = mTempRect; 1903 v.getDrawingRect(clipRect); 1904 1905 boolean textVisible = false; 1906 1907 destCanvas.save(); 1908 if (v instanceof TextView && pruneToDrawable) { 1909 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1910 clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); 1911 destCanvas.translate(padding / 2, padding / 2); 1912 d.draw(destCanvas); 1913 } else { 1914 if (v instanceof FolderIcon) { 1915 // For FolderIcons the text can bleed into the icon area, and so we need to 1916 // hide the text completely (which can't be achieved by clipping). 1917 if (((FolderIcon) v).getTextVisible()) { 1918 ((FolderIcon) v).setTextVisible(false); 1919 textVisible = true; 1920 } 1921 } else if (v instanceof BubbleTextView) { 1922 final BubbleTextView tv = (BubbleTextView) v; 1923 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1924 tv.getLayout().getLineTop(0); 1925 } else if (v instanceof TextView) { 1926 final TextView tv = (TextView) v; 1927 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1928 tv.getLayout().getLineTop(0); 1929 } 1930 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1931 destCanvas.clipRect(clipRect, Op.REPLACE); 1932 v.draw(destCanvas); 1933 1934 // Restore text visibility of FolderIcon if necessary 1935 if (textVisible) { 1936 ((FolderIcon) v).setTextVisible(true); 1937 } 1938 } 1939 destCanvas.restore(); 1940 } 1941 1942 /** 1943 * Returns a new bitmap to show when the given View is being dragged around. 1944 * Responsibility for the bitmap is transferred to the caller. 1945 */ 1946 public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1947 Bitmap b; 1948 1949 if (v instanceof TextView) { 1950 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1951 b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, 1952 d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); 1953 } else { 1954 b = Bitmap.createBitmap( 1955 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1956 } 1957 1958 canvas.setBitmap(b); 1959 drawDragView(v, canvas, padding, true); 1960 canvas.setBitmap(null); 1961 1962 return b; 1963 } 1964 1965 /** 1966 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1967 * Responsibility for the bitmap is transferred to the caller. 1968 */ 1969 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1970 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1971 final Bitmap b = Bitmap.createBitmap( 1972 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1973 1974 canvas.setBitmap(b); 1975 drawDragView(v, canvas, padding, true); 1976 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1977 canvas.setBitmap(null); 1978 return b; 1979 } 1980 1981 /** 1982 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1983 * Responsibility for the bitmap is transferred to the caller. 1984 */ 1985 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h, 1986 boolean clipAlpha) { 1987 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1988 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1989 canvas.setBitmap(b); 1990 1991 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 1992 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 1993 (h - padding) / (float) orig.getHeight()); 1994 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 1995 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 1996 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 1997 1998 // center the image 1999 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 2000 2001 canvas.drawBitmap(orig, src, dst, null); 2002 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor, 2003 clipAlpha); 2004 canvas.setBitmap(null); 2005 2006 return b; 2007 } 2008 2009 void startDrag(CellLayout.CellInfo cellInfo) { 2010 View child = cellInfo.cell; 2011 2012 // Make sure the drag was started by a long press as opposed to a long click. 2013 if (!child.isInTouchMode()) { 2014 return; 2015 } 2016 2017 mDragInfo = cellInfo; 2018 child.setVisibility(INVISIBLE); 2019 CellLayout layout = (CellLayout) child.getParent().getParent(); 2020 layout.prepareChildForDrag(child); 2021 2022 child.clearFocus(); 2023 child.setPressed(false); 2024 2025 final Canvas canvas = new Canvas(); 2026 2027 // The outline is used to visualize where the item will land if dropped 2028 mDragOutline = createDragOutline(child, canvas, DRAG_BITMAP_PADDING); 2029 beginDragShared(child, this); 2030 } 2031 2032 public void beginDragShared(View child, DragSource source) { 2033 Resources r = getResources(); 2034 2035 // The drag bitmap follows the touch point around on the screen 2036 final Bitmap b = createDragBitmap(child, new Canvas(), DRAG_BITMAP_PADDING); 2037 2038 final int bmpWidth = b.getWidth(); 2039 final int bmpHeight = b.getHeight(); 2040 2041 float scale = mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 2042 int dragLayerX = 2043 Math.round(mTempXY[0] - (bmpWidth - scale * child.getWidth()) / 2); 2044 int dragLayerY = 2045 Math.round(mTempXY[1] - (bmpHeight - scale * bmpHeight) / 2 2046 - DRAG_BITMAP_PADDING / 2); 2047 2048 Point dragVisualizeOffset = null; 2049 Rect dragRect = null; 2050 if (child instanceof BubbleTextView || child instanceof PagedViewIcon) { 2051 int iconSize = r.getDimensionPixelSize(R.dimen.app_icon_size); 2052 int iconPaddingTop = r.getDimensionPixelSize(R.dimen.app_icon_padding_top); 2053 int top = child.getPaddingTop(); 2054 int left = (bmpWidth - iconSize) / 2; 2055 int right = left + iconSize; 2056 int bottom = top + iconSize; 2057 dragLayerY += top; 2058 // Note: The drag region is used to calculate drag layer offsets, but the 2059 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 2060 dragVisualizeOffset = new Point(-DRAG_BITMAP_PADDING / 2, 2061 iconPaddingTop - DRAG_BITMAP_PADDING / 2); 2062 dragRect = new Rect(left, top, right, bottom); 2063 } else if (child instanceof FolderIcon) { 2064 int previewSize = r.getDimensionPixelSize(R.dimen.folder_preview_size); 2065 dragRect = new Rect(0, 0, child.getWidth(), previewSize); 2066 } 2067 2068 // Clear the pressed state if necessary 2069 if (child instanceof BubbleTextView) { 2070 BubbleTextView icon = (BubbleTextView) child; 2071 icon.clearPressedOrFocusedBackground(); 2072 } 2073 2074 mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 2075 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect, scale); 2076 b.recycle(); 2077 } 2078 2079 void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, long screenId, 2080 int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { 2081 View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); 2082 2083 final int[] cellXY = new int[2]; 2084 target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 2085 addInScreen(view, container, screenId, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 2086 2087 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screenId, cellXY[0], 2088 cellXY[1]); 2089 } 2090 2091 public boolean transitionStateShouldAllowDrop() { 2092 return ((!isSwitchingState() || mTransitionProgress > 0.5f) && mState != State.SMALL); 2093 } 2094 2095 /** 2096 * {@inheritDoc} 2097 */ 2098 public boolean acceptDrop(DragObject d) { 2099 // If it's an external drop (e.g. from All Apps), check if it should be accepted 2100 CellLayout dropTargetLayout = mDropToLayout; 2101 if (d.dragSource != this) { 2102 // Don't accept the drop if we're not over a screen at time of drop 2103 if (dropTargetLayout == null) { 2104 return false; 2105 } 2106 if (!transitionStateShouldAllowDrop()) return false; 2107 2108 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2109 d.dragView, mDragViewVisualCenter); 2110 2111 // We want the point to be mapped to the dragTarget. 2112 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 2113 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2114 } else { 2115 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 2116 } 2117 2118 int spanX = 1; 2119 int spanY = 1; 2120 if (mDragInfo != null) { 2121 final CellLayout.CellInfo dragCellInfo = mDragInfo; 2122 spanX = dragCellInfo.spanX; 2123 spanY = dragCellInfo.spanY; 2124 } else { 2125 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 2126 spanX = dragInfo.spanX; 2127 spanY = dragInfo.spanY; 2128 } 2129 2130 int minSpanX = spanX; 2131 int minSpanY = spanY; 2132 if (d.dragInfo instanceof PendingAddWidgetInfo) { 2133 minSpanX = ((PendingAddWidgetInfo) d.dragInfo).minSpanX; 2134 minSpanY = ((PendingAddWidgetInfo) d.dragInfo).minSpanY; 2135 } 2136 2137 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2138 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, dropTargetLayout, 2139 mTargetCell); 2140 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2141 mDragViewVisualCenter[1], mTargetCell); 2142 if (willCreateUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, 2143 mTargetCell, distance, true)) { 2144 return true; 2145 } 2146 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, 2147 mTargetCell, distance)) { 2148 return true; 2149 } 2150 2151 int[] resultSpan = new int[2]; 2152 mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], 2153 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2154 null, mTargetCell, resultSpan, CellLayout.MODE_ACCEPT_DROP); 2155 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2156 2157 // Don't accept the drop if there's no room for the item 2158 if (!foundCell) { 2159 // Don't show the message if we are dropping on the AllApps button and the hotseat 2160 // is full 2161 boolean isHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2162 if (mTargetCell != null && isHotseat) { 2163 Hotseat hotseat = mLauncher.getHotseat(); 2164 if (hotseat.isAllAppsButtonRank( 2165 hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { 2166 return false; 2167 } 2168 } 2169 2170 mLauncher.showOutOfSpaceMessage(isHotseat); 2171 return false; 2172 } 2173 } 2174 2175 long screenId = getIdForScreen(dropTargetLayout); 2176 if (screenId == EXTRA_EMPTY_SCREEN_ID) { 2177 commitExtraEmptyScreen(); 2178 } 2179 2180 return true; 2181 } 2182 2183 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, float 2184 distance, boolean considerTimeout) { 2185 if (distance > mMaxDistanceForFolderCreation) return false; 2186 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2187 2188 if (dropOverView != null) { 2189 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2190 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2191 return false; 2192 } 2193 } 2194 2195 boolean hasntMoved = false; 2196 if (mDragInfo != null) { 2197 hasntMoved = dropOverView == mDragInfo.cell; 2198 } 2199 2200 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2201 return false; 2202 } 2203 2204 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2205 boolean willBecomeShortcut = 2206 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2207 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2208 2209 return (aboveShortcut && willBecomeShortcut); 2210 } 2211 2212 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell, 2213 float distance) { 2214 if (distance > mMaxDistanceForFolderCreation) return false; 2215 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2216 2217 if (dropOverView != null) { 2218 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2219 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2220 return false; 2221 } 2222 } 2223 2224 if (dropOverView instanceof FolderIcon) { 2225 FolderIcon fi = (FolderIcon) dropOverView; 2226 if (fi.acceptDrop(dragInfo)) { 2227 return true; 2228 } 2229 } 2230 return false; 2231 } 2232 2233 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2234 int[] targetCell, float distance, boolean external, DragView dragView, 2235 Runnable postAnimationRunnable) { 2236 if (distance > mMaxDistanceForFolderCreation) return false; 2237 View v = target.getChildAt(targetCell[0], targetCell[1]); 2238 2239 boolean hasntMoved = false; 2240 if (mDragInfo != null) { 2241 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2242 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2243 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2244 } 2245 2246 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2247 mCreateUserFolderOnDrop = false; 2248 final long screenId = (targetCell == null) ? mDragInfo.screenId : getIdForScreen(target); 2249 2250 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2251 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2252 2253 if (aboveShortcut && willBecomeShortcut) { 2254 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2255 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2256 // if the drag started here, we need to remove it from the workspace 2257 if (!external) { 2258 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2259 } 2260 2261 Rect folderLocation = new Rect(); 2262 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2263 target.removeView(v); 2264 2265 FolderIcon fi = 2266 mLauncher.addFolder(target, container, screenId, targetCell[0], targetCell[1]); 2267 destInfo.cellX = -1; 2268 destInfo.cellY = -1; 2269 sourceInfo.cellX = -1; 2270 sourceInfo.cellY = -1; 2271 2272 // If the dragView is null, we can't animate 2273 boolean animate = dragView != null; 2274 if (animate) { 2275 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2276 postAnimationRunnable); 2277 } else { 2278 fi.addItem(destInfo); 2279 fi.addItem(sourceInfo); 2280 } 2281 return true; 2282 } 2283 return false; 2284 } 2285 2286 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2287 float distance, DragObject d, boolean external) { 2288 if (distance > mMaxDistanceForFolderCreation) return false; 2289 2290 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2291 if (!mAddToExistingFolderOnDrop) return false; 2292 mAddToExistingFolderOnDrop = false; 2293 2294 if (dropOverView instanceof FolderIcon) { 2295 FolderIcon fi = (FolderIcon) dropOverView; 2296 if (fi.acceptDrop(d.dragInfo)) { 2297 fi.onDrop(d); 2298 2299 // if the drag started here, we need to remove it from the workspace 2300 if (!external) { 2301 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2302 } 2303 return true; 2304 } 2305 } 2306 return false; 2307 } 2308 2309 public void onDrop(final DragObject d) { 2310 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2311 mDragViewVisualCenter); 2312 2313 CellLayout dropTargetLayout = mDropToLayout; 2314 2315 // We want the point to be mapped to the dragTarget. 2316 if (dropTargetLayout != null) { 2317 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 2318 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2319 } else { 2320 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 2321 } 2322 } 2323 2324 int snapScreen = -1; 2325 boolean resizeOnDrop = false; 2326 if (d.dragSource != this) { 2327 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2328 (int) mDragViewVisualCenter[1] }; 2329 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2330 } else if (mDragInfo != null) { 2331 final View cell = mDragInfo.cell; 2332 2333 Runnable resizeRunnable = null; 2334 if (dropTargetLayout != null && !d.cancelled) { 2335 // Move internally 2336 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2337 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2338 long container = hasMovedIntoHotseat ? 2339 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2340 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2341 long screenId = (mTargetCell[0] < 0) ? 2342 mDragInfo.screenId : getIdForScreen(dropTargetLayout); 2343 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2344 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2345 // First we find the cell nearest to point at which the item is 2346 // dropped, without any consideration to whether there is an item there. 2347 2348 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2349 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2350 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2351 mDragViewVisualCenter[1], mTargetCell); 2352 2353 // If the item being dropped is a shortcut and the nearest drop 2354 // cell also contains a shortcut, then create a folder with the two shortcuts. 2355 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2356 dropTargetLayout, mTargetCell, distance, false, d.dragView, null)) { 2357 stripEmptyScreens(); 2358 return; 2359 } 2360 2361 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, 2362 distance, d, false)) { 2363 stripEmptyScreens(); 2364 return; 2365 } 2366 2367 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2368 // we need to find the nearest cell location that is vacant 2369 ItemInfo item = (ItemInfo) d.dragInfo; 2370 int minSpanX = item.spanX; 2371 int minSpanY = item.spanY; 2372 if (item.minSpanX > 0 && item.minSpanY > 0) { 2373 minSpanX = item.minSpanX; 2374 minSpanY = item.minSpanY; 2375 } 2376 2377 int[] resultSpan = new int[2]; 2378 mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], 2379 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, cell, 2380 mTargetCell, resultSpan, CellLayout.MODE_ON_DROP); 2381 2382 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2383 2384 // if the widget resizes on drop 2385 if (foundCell && (cell instanceof AppWidgetHostView) && 2386 (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY)) { 2387 resizeOnDrop = true; 2388 item.spanX = resultSpan[0]; 2389 item.spanY = resultSpan[1]; 2390 AppWidgetHostView awhv = (AppWidgetHostView) cell; 2391 AppWidgetResizeFrame.updateWidgetSizeRanges(awhv, mLauncher, resultSpan[0], 2392 resultSpan[1]); 2393 } 2394 2395 if (getScreenIdForPageIndex(mCurrentPage) != screenId && !hasMovedIntoHotseat) { 2396 snapScreen = getPageIndexForScreenId(screenId); 2397 snapToPage(snapScreen); 2398 } 2399 2400 if (foundCell) { 2401 final ItemInfo info = (ItemInfo) cell.getTag(); 2402 if (hasMovedLayouts) { 2403 // Reparent the view 2404 getParentCellLayoutForView(cell).removeView(cell); 2405 addInScreen(cell, container, screenId, mTargetCell[0], mTargetCell[1], 2406 info.spanX, info.spanY); 2407 } 2408 2409 // update the item's position after drop 2410 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2411 lp.cellX = lp.tmpCellX = mTargetCell[0]; 2412 lp.cellY = lp.tmpCellY = mTargetCell[1]; 2413 lp.cellHSpan = item.spanX; 2414 lp.cellVSpan = item.spanY; 2415 lp.isLockedToGrid = true; 2416 cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screenId, 2417 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2418 2419 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2420 cell instanceof LauncherAppWidgetHostView) { 2421 final CellLayout cellLayout = dropTargetLayout; 2422 // We post this call so that the widget has a chance to be placed 2423 // in its final location 2424 2425 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2426 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2427 if (pinfo != null && 2428 pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2429 final Runnable addResizeFrame = new Runnable() { 2430 public void run() { 2431 DragLayer dragLayer = mLauncher.getDragLayer(); 2432 dragLayer.addResizeFrame(info, hostView, cellLayout); 2433 } 2434 }; 2435 resizeRunnable = (new Runnable() { 2436 public void run() { 2437 if (!isPageMoving()) { 2438 addResizeFrame.run(); 2439 } else { 2440 mDelayedResizeRunnable = addResizeFrame; 2441 } 2442 } 2443 }); 2444 } 2445 } 2446 2447 LauncherModel.moveItemInDatabase(mLauncher, info, container, screenId, lp.cellX, 2448 lp.cellY); 2449 } else { 2450 // If we can't find a drop location, we return the item to its original position 2451 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2452 mTargetCell[0] = lp.cellX; 2453 mTargetCell[1] = lp.cellY; 2454 CellLayout layout = (CellLayout) cell.getParent().getParent(); 2455 layout.markCellsAsOccupiedForView(cell); 2456 } 2457 } 2458 2459 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2460 final Runnable finalResizeRunnable = resizeRunnable; 2461 // Prepare it to be animated into its new position 2462 // This must be called after the view has been re-parented 2463 final Runnable onCompleteRunnable = new Runnable() { 2464 @Override 2465 public void run() { 2466 mAnimatingViewIntoPlace = false; 2467 updateChildrenLayersEnabled(false); 2468 if (finalResizeRunnable != null) { 2469 finalResizeRunnable.run(); 2470 } 2471 stripEmptyScreens(); 2472 } 2473 }; 2474 mAnimatingViewIntoPlace = true; 2475 if (d.dragView.hasDrawn()) { 2476 final ItemInfo info = (ItemInfo) cell.getTag(); 2477 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET) { 2478 int animationType = resizeOnDrop ? ANIMATE_INTO_POSITION_AND_RESIZE : 2479 ANIMATE_INTO_POSITION_AND_DISAPPEAR; 2480 animateWidgetDrop(info, parent, d.dragView, 2481 onCompleteRunnable, animationType, cell, false); 2482 } else { 2483 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2484 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2485 onCompleteRunnable, this); 2486 } 2487 } else { 2488 d.deferDragViewCleanupPostAnimation = false; 2489 cell.setVisibility(VISIBLE); 2490 } 2491 parent.onDropChild(cell); 2492 } 2493 } 2494 2495 public void setFinalScrollForPageChange(int pageIndex) { 2496 CellLayout cl = (CellLayout) getChildAt(pageIndex); 2497 if (cl != null) { 2498 mSavedScrollX = getScrollX(); 2499 mSavedTranslationX = cl.getTranslationX(); 2500 mSavedRotationY = cl.getRotationY(); 2501 final int newX = getScrollForPage(pageIndex); 2502 setScrollX(newX); 2503 cl.setTranslationX(0f); 2504 cl.setRotationY(0f); 2505 } 2506 } 2507 2508 public void resetFinalScrollForPageChange(int pageIndex) { 2509 if (pageIndex >= 0) { 2510 CellLayout cl = (CellLayout) getChildAt(pageIndex); 2511 setScrollX(mSavedScrollX); 2512 cl.setTranslationX(mSavedTranslationX); 2513 cl.setRotationY(mSavedRotationY); 2514 } 2515 } 2516 2517 public void getViewLocationRelativeToSelf(View v, int[] location) { 2518 getLocationInWindow(location); 2519 int x = location[0]; 2520 int y = location[1]; 2521 2522 v.getLocationInWindow(location); 2523 int vX = location[0]; 2524 int vY = location[1]; 2525 2526 location[0] = vX - x; 2527 location[1] = vY - y; 2528 } 2529 2530 public void onDragEnter(DragObject d) { 2531 mDragEnforcer.onDragEnter(); 2532 mCreateUserFolderOnDrop = false; 2533 mAddToExistingFolderOnDrop = false; 2534 2535 mDropToLayout = null; 2536 CellLayout layout = getCurrentDropLayout(); 2537 setCurrentDropLayout(layout); 2538 setCurrentDragOverlappingLayout(layout); 2539 2540 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2541 // don't need to show the outlines 2542 if (LauncherAppState.getInstance().isScreenLarge()) { 2543 showOutlines(); 2544 } 2545 } 2546 2547 static Rect getCellLayoutMetrics(Launcher launcher, int orientation) { 2548 Resources res = launcher.getResources(); 2549 Display display = launcher.getWindowManager().getDefaultDisplay(); 2550 Point smallestSize = new Point(); 2551 Point largestSize = new Point(); 2552 display.getCurrentSizeRange(smallestSize, largestSize); 2553 if (orientation == CellLayout.LANDSCAPE) { 2554 if (mLandscapeCellLayoutMetrics == null) { 2555 int paddingLeft = res.getDimensionPixelSize(R.dimen.workspace_left_padding_land); 2556 int paddingRight = res.getDimensionPixelSize(R.dimen.workspace_right_padding_land); 2557 int paddingTop = res.getDimensionPixelSize(R.dimen.workspace_top_padding_land); 2558 int paddingBottom = res.getDimensionPixelSize(R.dimen.workspace_bottom_padding_land); 2559 int width = largestSize.x - paddingLeft - paddingRight; 2560 int height = smallestSize.y - paddingTop - paddingBottom; 2561 mLandscapeCellLayoutMetrics = new Rect(); 2562 CellLayout.getMetrics(mLandscapeCellLayoutMetrics, res, 2563 width, height, LauncherModel.getCellCountX(), LauncherModel.getCellCountY(), 2564 orientation); 2565 } 2566 return mLandscapeCellLayoutMetrics; 2567 } else if (orientation == CellLayout.PORTRAIT) { 2568 if (mPortraitCellLayoutMetrics == null) { 2569 int paddingLeft = res.getDimensionPixelSize(R.dimen.workspace_left_padding_land); 2570 int paddingRight = res.getDimensionPixelSize(R.dimen.workspace_right_padding_land); 2571 int paddingTop = res.getDimensionPixelSize(R.dimen.workspace_top_padding_land); 2572 int paddingBottom = res.getDimensionPixelSize(R.dimen.workspace_bottom_padding_land); 2573 int width = smallestSize.x - paddingLeft - paddingRight; 2574 int height = largestSize.y - paddingTop - paddingBottom; 2575 mPortraitCellLayoutMetrics = new Rect(); 2576 CellLayout.getMetrics(mPortraitCellLayoutMetrics, res, 2577 width, height, LauncherModel.getCellCountX(), LauncherModel.getCellCountY(), 2578 orientation); 2579 } 2580 return mPortraitCellLayoutMetrics; 2581 } 2582 return null; 2583 } 2584 2585 public void onDragExit(DragObject d) { 2586 mDragEnforcer.onDragExit(); 2587 2588 // Here we store the final page that will be dropped to, if the workspace in fact 2589 // receives the drop 2590 if (mInScrollArea) { 2591 if (isPageMoving()) { 2592 // If the user drops while the page is scrolling, we should use that page as the 2593 // destination instead of the page that is being hovered over. 2594 mDropToLayout = (CellLayout) getPageAt(getNextPage()); 2595 } else { 2596 mDropToLayout = mDragOverlappingLayout; 2597 } 2598 } else { 2599 mDropToLayout = mDragTargetLayout; 2600 } 2601 2602 if (mDragMode == DRAG_MODE_CREATE_FOLDER) { 2603 mCreateUserFolderOnDrop = true; 2604 } else if (mDragMode == DRAG_MODE_ADD_TO_FOLDER) { 2605 mAddToExistingFolderOnDrop = true; 2606 } 2607 2608 // Reset the scroll area and previous drag target 2609 onResetScrollArea(); 2610 setCurrentDropLayout(null); 2611 setCurrentDragOverlappingLayout(null); 2612 2613 mSpringLoadedDragController.cancel(); 2614 2615 if (!mIsPageMoving) { 2616 hideOutlines(); 2617 } 2618 } 2619 2620 void setCurrentDropLayout(CellLayout layout) { 2621 if (mDragTargetLayout != null) { 2622 mDragTargetLayout.revertTempState(); 2623 mDragTargetLayout.onDragExit(); 2624 } 2625 mDragTargetLayout = layout; 2626 if (mDragTargetLayout != null) { 2627 mDragTargetLayout.onDragEnter(); 2628 } 2629 cleanupReorder(true); 2630 cleanupFolderCreation(); 2631 setCurrentDropOverCell(-1, -1); 2632 } 2633 2634 void setCurrentDragOverlappingLayout(CellLayout layout) { 2635 if (mDragOverlappingLayout != null) { 2636 mDragOverlappingLayout.setIsDragOverlapping(false); 2637 } 2638 mDragOverlappingLayout = layout; 2639 if (mDragOverlappingLayout != null) { 2640 mDragOverlappingLayout.setIsDragOverlapping(true); 2641 } 2642 invalidate(); 2643 } 2644 2645 void setCurrentDropOverCell(int x, int y) { 2646 if (x != mDragOverX || y != mDragOverY) { 2647 mDragOverX = x; 2648 mDragOverY = y; 2649 setDragMode(DRAG_MODE_NONE); 2650 } 2651 } 2652 2653 void setDragMode(int dragMode) { 2654 if (dragMode != mDragMode) { 2655 if (dragMode == DRAG_MODE_NONE) { 2656 cleanupAddToFolder(); 2657 // We don't want to cancel the re-order alarm every time the target cell changes 2658 // as this feels to slow / unresponsive. 2659 cleanupReorder(false); 2660 cleanupFolderCreation(); 2661 } else if (dragMode == DRAG_MODE_ADD_TO_FOLDER) { 2662 cleanupReorder(true); 2663 cleanupFolderCreation(); 2664 } else if (dragMode == DRAG_MODE_CREATE_FOLDER) { 2665 cleanupAddToFolder(); 2666 cleanupReorder(true); 2667 } else if (dragMode == DRAG_MODE_REORDER) { 2668 cleanupAddToFolder(); 2669 cleanupFolderCreation(); 2670 } 2671 mDragMode = dragMode; 2672 } 2673 } 2674 2675 private void cleanupFolderCreation() { 2676 if (mDragFolderRingAnimator != null) { 2677 mDragFolderRingAnimator.animateToNaturalState(); 2678 } 2679 mFolderCreationAlarm.cancelAlarm(); 2680 } 2681 2682 private void cleanupAddToFolder() { 2683 if (mDragOverFolderIcon != null) { 2684 mDragOverFolderIcon.onDragExit(null); 2685 mDragOverFolderIcon = null; 2686 } 2687 } 2688 2689 private void cleanupReorder(boolean cancelAlarm) { 2690 // Any pending reorders are canceled 2691 if (cancelAlarm) { 2692 mReorderAlarm.cancelAlarm(); 2693 } 2694 mLastReorderX = -1; 2695 mLastReorderY = -1; 2696 } 2697 2698 /* 2699 * 2700 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2701 * coordinate space. The argument xy is modified with the return result. 2702 * 2703 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2704 * computing it itself; we use this to avoid redundant matrix inversions in 2705 * findMatchingPageForDragOver 2706 * 2707 */ 2708 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2709 xy[0] = xy[0] - v.getLeft(); 2710 xy[1] = xy[1] - v.getTop(); 2711 } 2712 2713 boolean isPointInSelfOverHotseat(int x, int y, Rect r) { 2714 if (r == null) { 2715 r = new Rect(); 2716 } 2717 mTempPt[0] = x; 2718 mTempPt[1] = y; 2719 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(this, mTempPt, true); 2720 mLauncher.getHotseat().getHitRect(r); 2721 if (r.contains(mTempPt[0], mTempPt[1])) { 2722 return true; 2723 } 2724 return false; 2725 } 2726 2727 void mapPointFromSelfToHotseatLayout(Hotseat hotseat, float[] xy) { 2728 mTempPt[0] = (int) xy[0]; 2729 mTempPt[1] = (int) xy[1]; 2730 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(this, mTempPt, true); 2731 mLauncher.getDragLayer().mapCoordInSelfToDescendent(hotseat.getLayout(), mTempPt); 2732 2733 xy[0] = mTempPt[0]; 2734 xy[1] = mTempPt[1]; 2735 } 2736 2737 /* 2738 * 2739 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2740 * the parent View's coordinate space. The argument xy is modified with the return result. 2741 * 2742 */ 2743 void mapPointFromChildToSelf(View v, float[] xy) { 2744 xy[0] += v.getLeft(); 2745 xy[1] += v.getTop(); 2746 } 2747 2748 static private float squaredDistance(float[] point1, float[] point2) { 2749 float distanceX = point1[0] - point2[0]; 2750 float distanceY = point2[1] - point2[1]; 2751 return distanceX * distanceX + distanceY * distanceY; 2752 } 2753 2754 /* 2755 * 2756 * This method returns the CellLayout that is currently being dragged to. In order to drag 2757 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2758 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2759 * 2760 * Return null if no CellLayout is currently being dragged over 2761 * 2762 */ 2763 private CellLayout findMatchingPageForDragOver( 2764 DragView dragView, float originX, float originY, boolean exact) { 2765 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2766 // with the item being dragged and then choose the one that's closest to the touch point 2767 final int screenCount = getChildCount(); 2768 CellLayout bestMatchingScreen = null; 2769 float smallestDistSoFar = Float.MAX_VALUE; 2770 2771 for (int i = 0; i < screenCount; i++) { 2772 CellLayout cl = (CellLayout) getChildAt(i); 2773 2774 final float[] touchXy = {originX, originY}; 2775 // Transform the touch coordinates to the CellLayout's local coordinates 2776 // If the touch point is within the bounds of the cell layout, we can return immediately 2777 cl.getMatrix().invert(mTempInverseMatrix); 2778 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2779 2780 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2781 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2782 return cl; 2783 } 2784 2785 if (!exact) { 2786 // Get the center of the cell layout in screen coordinates 2787 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2788 cellLayoutCenter[0] = cl.getWidth()/2; 2789 cellLayoutCenter[1] = cl.getHeight()/2; 2790 mapPointFromChildToSelf(cl, cellLayoutCenter); 2791 2792 touchXy[0] = originX; 2793 touchXy[1] = originY; 2794 2795 // Calculate the distance between the center of the CellLayout 2796 // and the touch point 2797 float dist = squaredDistance(touchXy, cellLayoutCenter); 2798 2799 if (dist < smallestDistSoFar) { 2800 smallestDistSoFar = dist; 2801 bestMatchingScreen = cl; 2802 } 2803 } 2804 } 2805 return bestMatchingScreen; 2806 } 2807 2808 // This is used to compute the visual center of the dragView. This point is then 2809 // used to visualize drop locations and determine where to drop an item. The idea is that 2810 // the visual center represents the user's interpretation of where the item is, and hence 2811 // is the appropriate point to use when determining drop location. 2812 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2813 DragView dragView, float[] recycle) { 2814 float res[]; 2815 if (recycle == null) { 2816 res = new float[2]; 2817 } else { 2818 res = recycle; 2819 } 2820 2821 // First off, the drag view has been shifted in a way that is not represented in the 2822 // x and y values or the x/yOffsets. Here we account for that shift. 2823 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2824 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2825 2826 // These represent the visual top and left of drag view if a dragRect was provided. 2827 // If a dragRect was not provided, then they correspond to the actual view left and 2828 // top, as the dragRect is in that case taken to be the entire dragView. 2829 // R.dimen.dragViewOffsetY. 2830 int left = x - xOffset; 2831 int top = y - yOffset; 2832 2833 // In order to find the visual center, we shift by half the dragRect 2834 res[0] = left + dragView.getDragRegion().width() / 2; 2835 res[1] = top + dragView.getDragRegion().height() / 2; 2836 2837 return res; 2838 } 2839 2840 private boolean isDragWidget(DragObject d) { 2841 return (d.dragInfo instanceof LauncherAppWidgetInfo || 2842 d.dragInfo instanceof PendingAddWidgetInfo); 2843 } 2844 private boolean isExternalDragWidget(DragObject d) { 2845 return d.dragSource != this && isDragWidget(d); 2846 } 2847 2848 public void onDragOver(DragObject d) { 2849 // Skip drag over events while we are dragging over side pages 2850 if (mInScrollArea || mIsSwitchingState || mState == State.SMALL) return; 2851 2852 Rect r = new Rect(); 2853 CellLayout layout = null; 2854 ItemInfo item = (ItemInfo) d.dragInfo; 2855 2856 // Ensure that we have proper spans for the item that we are dropping 2857 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2858 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2859 d.dragView, mDragViewVisualCenter); 2860 2861 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2862 // Identify whether we have dragged over a side page 2863 if (isSmall()) { 2864 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 2865 if (isPointInSelfOverHotseat(d.x, d.y, r)) { 2866 layout = mLauncher.getHotseat().getLayout(); 2867 } 2868 } 2869 if (layout == null) { 2870 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false); 2871 } 2872 if (layout != mDragTargetLayout) { 2873 setCurrentDropLayout(layout); 2874 setCurrentDragOverlappingLayout(layout); 2875 2876 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 2877 if (isInSpringLoadedMode) { 2878 if (mLauncher.isHotseatLayout(layout)) { 2879 mSpringLoadedDragController.cancel(); 2880 } else { 2881 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2882 } 2883 } 2884 } 2885 } else { 2886 // Test to see if we are over the hotseat otherwise just use the current page 2887 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 2888 if (isPointInSelfOverHotseat(d.x, d.y, r)) { 2889 layout = mLauncher.getHotseat().getLayout(); 2890 } 2891 } 2892 if (layout == null) { 2893 layout = getCurrentDropLayout(); 2894 } 2895 if (layout != mDragTargetLayout) { 2896 setCurrentDropLayout(layout); 2897 setCurrentDragOverlappingLayout(layout); 2898 } 2899 } 2900 2901 // Handle the drag over 2902 if (mDragTargetLayout != null) { 2903 // We want the point to be mapped to the dragTarget. 2904 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2905 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2906 } else { 2907 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2908 } 2909 2910 ItemInfo info = (ItemInfo) d.dragInfo; 2911 2912 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2913 (int) mDragViewVisualCenter[1], item.spanX, item.spanY, 2914 mDragTargetLayout, mTargetCell); 2915 2916 setCurrentDropOverCell(mTargetCell[0], mTargetCell[1]); 2917 2918 float targetCellDistance = mDragTargetLayout.getDistanceFromCell( 2919 mDragViewVisualCenter[0], mDragViewVisualCenter[1], mTargetCell); 2920 2921 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2922 mTargetCell[1]); 2923 2924 manageFolderFeedback(info, mDragTargetLayout, mTargetCell, 2925 targetCellDistance, dragOverView); 2926 2927 int minSpanX = item.spanX; 2928 int minSpanY = item.spanY; 2929 if (item.minSpanX > 0 && item.minSpanY > 0) { 2930 minSpanX = item.minSpanX; 2931 minSpanY = item.minSpanY; 2932 } 2933 2934 boolean nearestDropOccupied = mDragTargetLayout.isNearestDropLocationOccupied((int) 2935 mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], item.spanX, 2936 item.spanY, child, mTargetCell); 2937 2938 if (!nearestDropOccupied) { 2939 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2940 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2941 mTargetCell[0], mTargetCell[1], item.spanX, item.spanY, false, 2942 d.dragView.getDragVisualizeOffset(), d.dragView.getDragRegion()); 2943 } else if ((mDragMode == DRAG_MODE_NONE || mDragMode == DRAG_MODE_REORDER) 2944 && !mReorderAlarm.alarmPending() && (mLastReorderX != mTargetCell[0] || 2945 mLastReorderY != mTargetCell[1])) { 2946 2947 // Otherwise, if we aren't adding to or creating a folder and there's no pending 2948 // reorder, then we schedule a reorder 2949 ReorderAlarmListener listener = new ReorderAlarmListener(mDragViewVisualCenter, 2950 minSpanX, minSpanY, item.spanX, item.spanY, d.dragView, child); 2951 mReorderAlarm.setOnAlarmListener(listener); 2952 mReorderAlarm.setAlarm(REORDER_TIMEOUT); 2953 } 2954 2955 if (mDragMode == DRAG_MODE_CREATE_FOLDER || mDragMode == DRAG_MODE_ADD_TO_FOLDER || 2956 !nearestDropOccupied) { 2957 if (mDragTargetLayout != null) { 2958 mDragTargetLayout.revertTempState(); 2959 } 2960 } 2961 } 2962 } 2963 2964 private void manageFolderFeedback(ItemInfo info, CellLayout targetLayout, 2965 int[] targetCell, float distance, View dragOverView) { 2966 boolean userFolderPending = willCreateUserFolder(info, targetLayout, targetCell, distance, 2967 false); 2968 2969 if (mDragMode == DRAG_MODE_NONE && userFolderPending && 2970 !mFolderCreationAlarm.alarmPending()) { 2971 mFolderCreationAlarm.setOnAlarmListener(new 2972 FolderCreationAlarmListener(targetLayout, targetCell[0], targetCell[1])); 2973 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2974 return; 2975 } 2976 2977 boolean willAddToFolder = 2978 willAddToExistingUserFolder(info, targetLayout, targetCell, distance); 2979 2980 if (willAddToFolder && mDragMode == DRAG_MODE_NONE) { 2981 mDragOverFolderIcon = ((FolderIcon) dragOverView); 2982 mDragOverFolderIcon.onDragEnter(info); 2983 if (targetLayout != null) { 2984 targetLayout.clearDragOutlines(); 2985 } 2986 setDragMode(DRAG_MODE_ADD_TO_FOLDER); 2987 return; 2988 } 2989 2990 if (mDragMode == DRAG_MODE_ADD_TO_FOLDER && !willAddToFolder) { 2991 setDragMode(DRAG_MODE_NONE); 2992 } 2993 if (mDragMode == DRAG_MODE_CREATE_FOLDER && !userFolderPending) { 2994 setDragMode(DRAG_MODE_NONE); 2995 } 2996 2997 return; 2998 } 2999 3000 class FolderCreationAlarmListener implements OnAlarmListener { 3001 CellLayout layout; 3002 int cellX; 3003 int cellY; 3004 3005 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 3006 this.layout = layout; 3007 this.cellX = cellX; 3008 this.cellY = cellY; 3009 } 3010 3011 public void onAlarm(Alarm alarm) { 3012 if (mDragFolderRingAnimator == null) { 3013 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 3014 } 3015 mDragFolderRingAnimator.setCell(cellX, cellY); 3016 mDragFolderRingAnimator.setCellLayout(layout); 3017 mDragFolderRingAnimator.animateToAcceptState(); 3018 layout.showFolderAccept(mDragFolderRingAnimator); 3019 layout.clearDragOutlines(); 3020 setDragMode(DRAG_MODE_CREATE_FOLDER); 3021 } 3022 } 3023 3024 class ReorderAlarmListener implements OnAlarmListener { 3025 float[] dragViewCenter; 3026 int minSpanX, minSpanY, spanX, spanY; 3027 DragView dragView; 3028 View child; 3029 3030 public ReorderAlarmListener(float[] dragViewCenter, int minSpanX, int minSpanY, int spanX, 3031 int spanY, DragView dragView, View child) { 3032 this.dragViewCenter = dragViewCenter; 3033 this.minSpanX = minSpanX; 3034 this.minSpanY = minSpanY; 3035 this.spanX = spanX; 3036 this.spanY = spanY; 3037 this.child = child; 3038 this.dragView = dragView; 3039 } 3040 3041 public void onAlarm(Alarm alarm) { 3042 int[] resultSpan = new int[2]; 3043 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 3044 (int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell); 3045 mLastReorderX = mTargetCell[0]; 3046 mLastReorderY = mTargetCell[1]; 3047 3048 mTargetCell = mDragTargetLayout.createArea((int) mDragViewVisualCenter[0], 3049 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 3050 child, mTargetCell, resultSpan, CellLayout.MODE_DRAG_OVER); 3051 3052 if (mTargetCell[0] < 0 || mTargetCell[1] < 0) { 3053 mDragTargetLayout.revertTempState(); 3054 } else { 3055 setDragMode(DRAG_MODE_REORDER); 3056 } 3057 3058 boolean resize = resultSpan[0] != spanX || resultSpan[1] != spanY; 3059 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 3060 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 3061 mTargetCell[0], mTargetCell[1], resultSpan[0], resultSpan[1], resize, 3062 dragView.getDragVisualizeOffset(), dragView.getDragRegion()); 3063 } 3064 } 3065 3066 @Override 3067 public void getHitRectRelativeToDragLayer(Rect outRect) { 3068 // We want the workspace to have the whole area of the display (it will find the correct 3069 // cell layout to drop to in the existing drag/drop logic. 3070 mLauncher.getDragLayer().getDescendantRectRelativeToSelf(this, outRect); 3071 } 3072 3073 /** 3074 * Add the item specified by dragInfo to the given layout. 3075 * @return true if successful 3076 */ 3077 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 3078 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 3079 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 3080 return true; 3081 } 3082 mLauncher.showOutOfSpaceMessage(mLauncher.isHotseatLayout(layout)); 3083 return false; 3084 } 3085 3086 private void onDropExternal(int[] touchXY, Object dragInfo, 3087 CellLayout cellLayout, boolean insertAtFirst) { 3088 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 3089 } 3090 3091 /** 3092 * Drop an item that didn't originate on one of the workspace screens. 3093 * It may have come from Launcher (e.g. from all apps or customize), or it may have 3094 * come from another app altogether. 3095 * 3096 * NOTE: This can also be called when we are outside of a drag event, when we want 3097 * to add an item to one of the workspace screens. 3098 */ 3099 private void onDropExternal(final int[] touchXY, final Object dragInfo, 3100 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 3101 final Runnable exitSpringLoadedRunnable = new Runnable() { 3102 @Override 3103 public void run() { 3104 mLauncher.exitSpringLoadedDragModeDelayed(true, false, null); 3105 } 3106 }; 3107 3108 ItemInfo info = (ItemInfo) dragInfo; 3109 int spanX = info.spanX; 3110 int spanY = info.spanY; 3111 if (mDragInfo != null) { 3112 spanX = mDragInfo.spanX; 3113 spanY = mDragInfo.spanY; 3114 } 3115 3116 final long container = mLauncher.isHotseatLayout(cellLayout) ? 3117 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 3118 LauncherSettings.Favorites.CONTAINER_DESKTOP; 3119 final long screenId = getIdForScreen(cellLayout); 3120 if (!mLauncher.isHotseatLayout(cellLayout) 3121 && screenId != getScreenIdForPageIndex(mCurrentPage) 3122 && mState != State.SPRING_LOADED) { 3123 snapToScreenId(screenId, null); 3124 } 3125 3126 if (info instanceof PendingAddItemInfo) { 3127 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 3128 3129 boolean findNearestVacantCell = true; 3130 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 3131 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3132 cellLayout, mTargetCell); 3133 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3134 mDragViewVisualCenter[1], mTargetCell); 3135 if (willCreateUserFolder((ItemInfo) d.dragInfo, cellLayout, mTargetCell, 3136 distance, true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 3137 cellLayout, mTargetCell, distance)) { 3138 findNearestVacantCell = false; 3139 } 3140 } 3141 3142 final ItemInfo item = (ItemInfo) d.dragInfo; 3143 boolean updateWidgetSize = false; 3144 if (findNearestVacantCell) { 3145 int minSpanX = item.spanX; 3146 int minSpanY = item.spanY; 3147 if (item.minSpanX > 0 && item.minSpanY > 0) { 3148 minSpanX = item.minSpanX; 3149 minSpanY = item.minSpanY; 3150 } 3151 int[] resultSpan = new int[2]; 3152 mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], 3153 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, info.spanX, info.spanY, 3154 null, mTargetCell, resultSpan, CellLayout.MODE_ON_DROP_EXTERNAL); 3155 3156 if (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY) { 3157 updateWidgetSize = true; 3158 } 3159 item.spanX = resultSpan[0]; 3160 item.spanY = resultSpan[1]; 3161 } 3162 3163 Runnable onAnimationCompleteRunnable = new Runnable() { 3164 @Override 3165 public void run() { 3166 // When dragging and dropping from customization tray, we deal with creating 3167 // widgets/shortcuts/folders in a slightly different way 3168 switch (pendingInfo.itemType) { 3169 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 3170 int span[] = new int[2]; 3171 span[0] = item.spanX; 3172 span[1] = item.spanY; 3173 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, 3174 container, screenId, mTargetCell, span, null); 3175 break; 3176 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3177 mLauncher.processShortcutFromDrop(pendingInfo.componentName, 3178 container, screenId, mTargetCell, null); 3179 break; 3180 default: 3181 throw new IllegalStateException("Unknown item type: " + 3182 pendingInfo.itemType); 3183 } 3184 } 3185 }; 3186 View finalView = pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET 3187 ? ((PendingAddWidgetInfo) pendingInfo).boundWidget : null; 3188 3189 if (finalView instanceof AppWidgetHostView && updateWidgetSize) { 3190 AppWidgetHostView awhv = (AppWidgetHostView) finalView; 3191 AppWidgetResizeFrame.updateWidgetSizeRanges(awhv, mLauncher, item.spanX, 3192 item.spanY); 3193 } 3194 3195 int animationStyle = ANIMATE_INTO_POSITION_AND_DISAPPEAR; 3196 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && 3197 ((PendingAddWidgetInfo) pendingInfo).info.configure != null) { 3198 animationStyle = ANIMATE_INTO_POSITION_AND_REMAIN; 3199 } 3200 animateWidgetDrop(info, cellLayout, d.dragView, onAnimationCompleteRunnable, 3201 animationStyle, finalView, true); 3202 } else { 3203 // This is for other drag/drop cases, like dragging from All Apps 3204 View view = null; 3205 3206 switch (info.itemType) { 3207 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 3208 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3209 if (info.container == NO_ID && info instanceof ApplicationInfo) { 3210 // Came from all apps -- make a copy 3211 info = new ShortcutInfo((ApplicationInfo) info); 3212 } 3213 view = mLauncher.createShortcut(R.layout.application, cellLayout, 3214 (ShortcutInfo) info); 3215 break; 3216 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 3217 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 3218 (FolderInfo) info, mIconCache); 3219 break; 3220 default: 3221 throw new IllegalStateException("Unknown item type: " + info.itemType); 3222 } 3223 3224 // First we find the cell nearest to point at which the item is 3225 // dropped, without any consideration to whether there is an item there. 3226 if (touchXY != null) { 3227 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3228 cellLayout, mTargetCell); 3229 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3230 mDragViewVisualCenter[1], mTargetCell); 3231 d.postAnimationRunnable = exitSpringLoadedRunnable; 3232 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, distance, 3233 true, d.dragView, d.postAnimationRunnable)) { 3234 return; 3235 } 3236 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, distance, d, 3237 true)) { 3238 return; 3239 } 3240 } 3241 3242 if (touchXY != null) { 3243 // when dragging and dropping, just find the closest free spot 3244 mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], 3245 (int) mDragViewVisualCenter[1], 1, 1, 1, 1, 3246 null, mTargetCell, null, CellLayout.MODE_ON_DROP_EXTERNAL); 3247 } else { 3248 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3249 } 3250 addInScreen(view, container, screenId, mTargetCell[0], mTargetCell[1], info.spanX, 3251 info.spanY, insertAtFirst); 3252 cellLayout.onDropChild(view); 3253 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 3254 cellLayout.getShortcutsAndWidgets().measureChild(view); 3255 3256 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screenId, 3257 lp.cellX, lp.cellY); 3258 3259 if (d.dragView != null) { 3260 // We wrap the animation call in the temporary set and reset of the current 3261 // cellLayout to its final transform -- this means we animate the drag view to 3262 // the correct final location. 3263 setFinalTransitionTransform(cellLayout); 3264 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 3265 exitSpringLoadedRunnable); 3266 resetTransitionTransform(cellLayout); 3267 } 3268 } 3269 } 3270 3271 public Bitmap createWidgetBitmap(ItemInfo widgetInfo, View layout) { 3272 int[] unScaledSize = mLauncher.getWorkspace().estimateItemSize(widgetInfo.spanX, 3273 widgetInfo.spanY, widgetInfo, false); 3274 int visibility = layout.getVisibility(); 3275 layout.setVisibility(VISIBLE); 3276 3277 int width = MeasureSpec.makeMeasureSpec(unScaledSize[0], MeasureSpec.EXACTLY); 3278 int height = MeasureSpec.makeMeasureSpec(unScaledSize[1], MeasureSpec.EXACTLY); 3279 Bitmap b = Bitmap.createBitmap(unScaledSize[0], unScaledSize[1], 3280 Bitmap.Config.ARGB_8888); 3281 Canvas c = new Canvas(b); 3282 3283 layout.measure(width, height); 3284 layout.layout(0, 0, unScaledSize[0], unScaledSize[1]); 3285 layout.draw(c); 3286 c.setBitmap(null); 3287 layout.setVisibility(visibility); 3288 return b; 3289 } 3290 3291 private void getFinalPositionForDropAnimation(int[] loc, float[] scaleXY, 3292 DragView dragView, CellLayout layout, ItemInfo info, int[] targetCell, 3293 boolean external, boolean scale) { 3294 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 3295 // location and size on the home screen. 3296 int spanX = info.spanX; 3297 int spanY = info.spanY; 3298 3299 Rect r = estimateItemPosition(layout, info, targetCell[0], targetCell[1], spanX, spanY); 3300 loc[0] = r.left; 3301 loc[1] = r.top; 3302 3303 setFinalTransitionTransform(layout); 3304 float cellLayoutScale = 3305 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(layout, loc, true); 3306 resetTransitionTransform(layout); 3307 3308 float dragViewScaleX; 3309 float dragViewScaleY; 3310 if (scale) { 3311 dragViewScaleX = (1.0f * r.width()) / dragView.getMeasuredWidth(); 3312 dragViewScaleY = (1.0f * r.height()) / dragView.getMeasuredHeight(); 3313 } else { 3314 dragViewScaleX = 1f; 3315 dragViewScaleY = 1f; 3316 } 3317 3318 // The animation will scale the dragView about its center, so we need to center about 3319 // the final location. 3320 loc[0] -= (dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 3321 loc[1] -= (dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 3322 3323 scaleXY[0] = dragViewScaleX * cellLayoutScale; 3324 scaleXY[1] = dragViewScaleY * cellLayoutScale; 3325 } 3326 3327 public void animateWidgetDrop(ItemInfo info, CellLayout cellLayout, DragView dragView, 3328 final Runnable onCompleteRunnable, int animationType, final View finalView, 3329 boolean external) { 3330 Rect from = new Rect(); 3331 mLauncher.getDragLayer().getViewRectRelativeToSelf(dragView, from); 3332 3333 int[] finalPos = new int[2]; 3334 float scaleXY[] = new float[2]; 3335 boolean scalePreview = !(info instanceof PendingAddShortcutInfo); 3336 getFinalPositionForDropAnimation(finalPos, scaleXY, dragView, cellLayout, info, mTargetCell, 3337 external, scalePreview); 3338 3339 Resources res = mLauncher.getResources(); 3340 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration) - 200; 3341 3342 // In the case where we've prebound the widget, we remove it from the DragLayer 3343 if (finalView instanceof AppWidgetHostView && external) { 3344 Log.d(TAG, "6557954 Animate widget drop, final view is appWidgetHostView"); 3345 mLauncher.getDragLayer().removeView(finalView); 3346 } 3347 if ((animationType == ANIMATE_INTO_POSITION_AND_RESIZE || external) && finalView != null) { 3348 Bitmap crossFadeBitmap = createWidgetBitmap(info, finalView); 3349 dragView.setCrossFadeBitmap(crossFadeBitmap); 3350 dragView.crossFade((int) (duration * 0.8f)); 3351 } else if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && external) { 3352 scaleXY[0] = scaleXY[1] = Math.min(scaleXY[0], scaleXY[1]); 3353 } 3354 3355 DragLayer dragLayer = mLauncher.getDragLayer(); 3356 if (animationType == CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION) { 3357 mLauncher.getDragLayer().animateViewIntoPosition(dragView, finalPos, 0f, 0.1f, 0.1f, 3358 DragLayer.ANIMATION_END_DISAPPEAR, onCompleteRunnable, duration); 3359 } else { 3360 int endStyle; 3361 if (animationType == ANIMATE_INTO_POSITION_AND_REMAIN) { 3362 endStyle = DragLayer.ANIMATION_END_REMAIN_VISIBLE; 3363 } else { 3364 endStyle = DragLayer.ANIMATION_END_DISAPPEAR;; 3365 } 3366 3367 Runnable onComplete = new Runnable() { 3368 @Override 3369 public void run() { 3370 if (finalView != null) { 3371 finalView.setVisibility(VISIBLE); 3372 } 3373 if (onCompleteRunnable != null) { 3374 onCompleteRunnable.run(); 3375 } 3376 } 3377 }; 3378 dragLayer.animateViewIntoPosition(dragView, from.left, from.top, finalPos[0], 3379 finalPos[1], 1, 1, 1, scaleXY[0], scaleXY[1], onComplete, endStyle, 3380 duration, this); 3381 } 3382 } 3383 3384 public void setFinalTransitionTransform(CellLayout layout) { 3385 if (isSwitchingState()) { 3386 mCurrentScale = getScaleX(); 3387 setScaleX(mNewScale); 3388 setScaleY(mNewScale); 3389 } 3390 } 3391 public void resetTransitionTransform(CellLayout layout) { 3392 if (isSwitchingState()) { 3393 setScaleX(mCurrentScale); 3394 setScaleY(mCurrentScale); 3395 } 3396 } 3397 3398 /** 3399 * Return the current {@link CellLayout}, correctly picking the destination 3400 * screen while a scroll is in progress. 3401 */ 3402 public CellLayout getCurrentDropLayout() { 3403 return (CellLayout) getChildAt(getNextPage()); 3404 } 3405 3406 /** 3407 * Return the current CellInfo describing our current drag; this method exists 3408 * so that Launcher can sync this object with the correct info when the activity is created/ 3409 * destroyed 3410 * 3411 */ 3412 public CellLayout.CellInfo getDragInfo() { 3413 return mDragInfo; 3414 } 3415 3416 /** 3417 * Calculate the nearest cell where the given object would be dropped. 3418 * 3419 * pixelX and pixelY should be in the coordinate system of layout 3420 */ 3421 private int[] findNearestArea(int pixelX, int pixelY, 3422 int spanX, int spanY, CellLayout layout, int[] recycle) { 3423 return layout.findNearestArea( 3424 pixelX, pixelY, spanX, spanY, recycle); 3425 } 3426 3427 void setup(DragController dragController) { 3428 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3429 mDragController = dragController; 3430 3431 // hardware layers on children are enabled on startup, but should be disabled until 3432 // needed 3433 updateChildrenLayersEnabled(false); 3434 setWallpaperDimension(); 3435 } 3436 3437 /** 3438 * Called at the end of a drag which originated on the workspace. 3439 */ 3440 public void onDropCompleted(final View target, final DragObject d, 3441 final boolean isFlingToDelete, final boolean success) { 3442 if (mDeferDropAfterUninstall) { 3443 mDeferredAction = new Runnable() { 3444 public void run() { 3445 onDropCompleted(target, d, isFlingToDelete, success); 3446 mDeferredAction = null; 3447 } 3448 }; 3449 return; 3450 } 3451 3452 boolean beingCalledAfterUninstall = mDeferredAction != null; 3453 3454 if (success && !(beingCalledAfterUninstall && !mUninstallSuccessful)) { 3455 if (target != this && mDragInfo != null) { 3456 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 3457 if (mDragInfo.cell instanceof DropTarget) { 3458 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 3459 } 3460 // If we move the item to anything not on the Workspace, check if any empty 3461 // screens need to be removed. If we dropped back on the workspace, this will 3462 // be done post drop animation. 3463 stripEmptyScreens(); 3464 } 3465 } else if (mDragInfo != null) { 3466 CellLayout cellLayout; 3467 if (mLauncher.isHotseatLayout(target)) { 3468 cellLayout = mLauncher.getHotseat().getLayout(); 3469 } else { 3470 cellLayout = getScreenWithId(mDragInfo.screenId); 3471 } 3472 cellLayout.onDropChild(mDragInfo.cell); 3473 } 3474 if ((d.cancelled || (beingCalledAfterUninstall && !mUninstallSuccessful)) 3475 && mDragInfo.cell != null) { 3476 mDragInfo.cell.setVisibility(VISIBLE); 3477 } 3478 mDragOutline = null; 3479 mDragInfo = null; 3480 } 3481 3482 public void deferCompleteDropAfterUninstallActivity() { 3483 mDeferDropAfterUninstall = true; 3484 } 3485 3486 /// maybe move this into a smaller part 3487 public void onUninstallActivityReturned(boolean success) { 3488 mDeferDropAfterUninstall = false; 3489 mUninstallSuccessful = success; 3490 if (mDeferredAction != null) { 3491 mDeferredAction.run(); 3492 } 3493 } 3494 3495 void updateItemLocationsInDatabase(CellLayout cl) { 3496 int count = cl.getShortcutsAndWidgets().getChildCount(); 3497 3498 long screenId = getIdForScreen(cl); 3499 int container = Favorites.CONTAINER_DESKTOP; 3500 3501 if (mLauncher.isHotseatLayout(cl)) { 3502 screenId = -1; 3503 container = Favorites.CONTAINER_HOTSEAT; 3504 } 3505 3506 for (int i = 0; i < count; i++) { 3507 View v = cl.getShortcutsAndWidgets().getChildAt(i); 3508 ItemInfo info = (ItemInfo) v.getTag(); 3509 // Null check required as the AllApps button doesn't have an item info 3510 if (info != null && info.requiresDbUpdate) { 3511 info.requiresDbUpdate = false; 3512 LauncherModel.modifyItemInDatabase(mLauncher, info, container, screenId, info.cellX, 3513 info.cellY, info.spanX, info.spanY); 3514 } 3515 } 3516 } 3517 3518 ArrayList<ComponentName> stripDuplicateApps() { 3519 ArrayList<ComponentName> uniqueIntents = new ArrayList<ComponentName>(); 3520 stripDuplicateApps((CellLayout) mLauncher.getHotseat().getLayout(), uniqueIntents); 3521 int count = getChildCount(); 3522 for (int i = 0; i < count; i++) { 3523 CellLayout cl = (CellLayout) getChildAt(i); 3524 stripDuplicateApps(cl, uniqueIntents); 3525 } 3526 return uniqueIntents; 3527 } 3528 3529 void stripDuplicateApps(CellLayout cl, ArrayList<ComponentName> uniqueIntents) { 3530 int count = cl.getShortcutsAndWidgets().getChildCount(); 3531 3532 ArrayList<View> children = new ArrayList<View>(); 3533 for (int i = 0; i < count; i++) { 3534 View v = cl.getShortcutsAndWidgets().getChildAt(i); 3535 children.add(v); 3536 } 3537 3538 for (int i = 0; i < count; i++) { 3539 View v = children.get(i); 3540 ItemInfo info = (ItemInfo) v.getTag(); 3541 // Null check required as the AllApps button doesn't have an item info 3542 if (info instanceof ShortcutInfo) { 3543 ShortcutInfo si = (ShortcutInfo) info; 3544 ComponentName cn = si.intent.getComponent(); 3545 3546 if (si.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 3547 continue; 3548 } 3549 3550 if (!uniqueIntents.contains(cn)) { 3551 uniqueIntents.add(cn); 3552 } else { 3553 cl.removeViewInLayout(v); 3554 LauncherModel.deleteItemFromDatabase(mLauncher, si); 3555 } 3556 } 3557 if (v instanceof FolderIcon) { 3558 FolderIcon fi = (FolderIcon) v; 3559 ArrayList<View> items = fi.getFolder().getItemsInReadingOrder(); 3560 for (int j = 0; j < items.size(); j++) { 3561 if (items.get(j).getTag() instanceof ShortcutInfo) { 3562 ShortcutInfo si = (ShortcutInfo) items.get(j).getTag(); 3563 ComponentName cn = si.intent.getComponent(); 3564 3565 if (si.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 3566 continue; 3567 } 3568 if (!uniqueIntents.contains(cn)) { 3569 uniqueIntents.add(cn); 3570 } else { 3571 fi.getFolderInfo().remove(si); 3572 LauncherModel.deleteItemFromDatabase(mLauncher, si); 3573 } 3574 } 3575 } 3576 } 3577 } 3578 } 3579 3580 void saveWorkspaceToDb() { 3581 saveWorkspaceScreenToDb((CellLayout) mLauncher.getHotseat().getLayout()); 3582 int count = getChildCount(); 3583 for (int i = 0; i < count; i++) { 3584 CellLayout cl = (CellLayout) getChildAt(i); 3585 saveWorkspaceScreenToDb(cl); 3586 } 3587 } 3588 3589 void saveWorkspaceScreenToDb(CellLayout cl) { 3590 int count = cl.getShortcutsAndWidgets().getChildCount(); 3591 3592 long screenId = getIdForScreen(cl); 3593 int container = Favorites.CONTAINER_DESKTOP; 3594 3595 Hotseat hotseat = mLauncher.getHotseat(); 3596 if (mLauncher.isHotseatLayout(cl)) { 3597 screenId = -1; 3598 container = Favorites.CONTAINER_HOTSEAT; 3599 } 3600 3601 for (int i = 0; i < count; i++) { 3602 View v = cl.getShortcutsAndWidgets().getChildAt(i); 3603 ItemInfo info = (ItemInfo) v.getTag(); 3604 // Null check required as the AllApps button doesn't have an item info 3605 if (info != null) { 3606 int cellX = info.cellX; 3607 int cellY = info.cellY; 3608 if (container == Favorites.CONTAINER_HOTSEAT) { 3609 cellX = hotseat.getCellXFromOrder((int) info.screenId); 3610 cellY = hotseat.getCellYFromOrder((int) info.screenId); 3611 } 3612 LauncherModel.addItemToDatabase(mLauncher, info, container, screenId, cellX, 3613 cellY, false); 3614 } 3615 if (v instanceof FolderIcon) { 3616 FolderIcon fi = (FolderIcon) v; 3617 fi.getFolder().addItemLocationsInDatabase(); 3618 } 3619 } 3620 } 3621 3622 @Override 3623 public boolean supportsFlingToDelete() { 3624 return true; 3625 } 3626 3627 @Override 3628 public void onFlingToDelete(DragObject d, int x, int y, PointF vec) { 3629 // Do nothing 3630 } 3631 3632 @Override 3633 public void onFlingToDeleteCompleted() { 3634 // Do nothing 3635 } 3636 3637 public boolean isDropEnabled() { 3638 return true; 3639 } 3640 3641 @Override 3642 protected void onRestoreInstanceState(Parcelable state) { 3643 super.onRestoreInstanceState(state); 3644 Launcher.setScreen(mCurrentPage); 3645 } 3646 3647 @Override 3648 protected void dispatchRestoreInstanceState(SparseArray<Parcelable> container) { 3649 // We don't dispatch restoreInstanceState to our children using this code path. 3650 // Some pages will be restored immediately as their items are bound immediately, and 3651 // others we will need to wait until after their items are bound. 3652 mSavedStates = container; 3653 } 3654 3655 public void restoreInstanceStateForChild(int child) { 3656 if (mSavedStates != null) { 3657 mRestoredPages.add(child); 3658 CellLayout cl = (CellLayout) getChildAt(child); 3659 cl.restoreInstanceState(mSavedStates); 3660 } 3661 } 3662 3663 public void restoreInstanceStateForRemainingPages() { 3664 int count = getChildCount(); 3665 for (int i = 0; i < count; i++) { 3666 if (!mRestoredPages.contains(i)) { 3667 restoreInstanceStateForChild(i); 3668 } 3669 } 3670 mRestoredPages.clear(); 3671 } 3672 3673 @Override 3674 public void scrollLeft() { 3675 if (!isSmall() && !mIsSwitchingState) { 3676 super.scrollLeft(); 3677 } 3678 Folder openFolder = getOpenFolder(); 3679 if (openFolder != null) { 3680 openFolder.completeDragExit(); 3681 } 3682 } 3683 3684 @Override 3685 public void scrollRight() { 3686 if (!isSmall() && !mIsSwitchingState) { 3687 super.scrollRight(); 3688 } 3689 Folder openFolder = getOpenFolder(); 3690 if (openFolder != null) { 3691 openFolder.completeDragExit(); 3692 } 3693 } 3694 3695 @Override 3696 public boolean onEnterScrollArea(int x, int y, int direction) { 3697 // Ignore the scroll area if we are dragging over the hot seat 3698 boolean isPortrait = !LauncherAppState.isScreenLandscape(getContext()); 3699 if (mLauncher.getHotseat() != null && isPortrait) { 3700 Rect r = new Rect(); 3701 mLauncher.getHotseat().getHitRect(r); 3702 if (r.contains(x, y)) { 3703 return false; 3704 } 3705 } 3706 3707 boolean result = false; 3708 if (!isSmall() && !mIsSwitchingState) { 3709 mInScrollArea = true; 3710 3711 final int page = getNextPage() + 3712 (direction == DragController.SCROLL_LEFT ? -1 : 1); 3713 3714 // Ensure that we are not dragging over to the custom content screen 3715 if (getScreenIdForPageIndex(page) == CUSTOM_CONTENT_SCREEN_ID) { 3716 return false; 3717 } 3718 3719 // We always want to exit the current layout to ensure parity of enter / exit 3720 setCurrentDropLayout(null); 3721 3722 if (0 <= page && page < getChildCount()) { 3723 CellLayout layout = (CellLayout) getChildAt(page); 3724 setCurrentDragOverlappingLayout(layout); 3725 3726 // Workspace is responsible for drawing the edge glow on adjacent pages, 3727 // so we need to redraw the workspace when this may have changed. 3728 invalidate(); 3729 result = true; 3730 } 3731 } 3732 return result; 3733 } 3734 3735 @Override 3736 public boolean onExitScrollArea() { 3737 boolean result = false; 3738 if (mInScrollArea) { 3739 invalidate(); 3740 CellLayout layout = getCurrentDropLayout(); 3741 setCurrentDropLayout(layout); 3742 setCurrentDragOverlappingLayout(layout); 3743 3744 result = true; 3745 mInScrollArea = false; 3746 } 3747 return result; 3748 } 3749 3750 private void onResetScrollArea() { 3751 setCurrentDragOverlappingLayout(null); 3752 mInScrollArea = false; 3753 } 3754 3755 /** 3756 * Returns a specific CellLayout 3757 */ 3758 CellLayout getParentCellLayoutForView(View v) { 3759 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3760 for (CellLayout layout : layouts) { 3761 if (layout.getShortcutsAndWidgets().indexOfChild(v) > -1) { 3762 return layout; 3763 } 3764 } 3765 return null; 3766 } 3767 3768 /** 3769 * Returns a list of all the CellLayouts in the workspace. 3770 */ 3771 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3772 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3773 int screenCount = getChildCount(); 3774 for (int screen = 0; screen < screenCount; screen++) { 3775 layouts.add(((CellLayout) getChildAt(screen))); 3776 } 3777 if (mLauncher.getHotseat() != null) { 3778 layouts.add(mLauncher.getHotseat().getLayout()); 3779 } 3780 return layouts; 3781 } 3782 3783 /** 3784 * We should only use this to search for specific children. Do not use this method to modify 3785 * ShortcutsAndWidgetsContainer directly. Includes ShortcutAndWidgetContainers from 3786 * the hotseat and workspace pages 3787 */ 3788 ArrayList<ShortcutAndWidgetContainer> getAllShortcutAndWidgetContainers() { 3789 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3790 new ArrayList<ShortcutAndWidgetContainer>(); 3791 int screenCount = getChildCount(); 3792 for (int screen = 0; screen < screenCount; screen++) { 3793 childrenLayouts.add(((CellLayout) getChildAt(screen)).getShortcutsAndWidgets()); 3794 } 3795 if (mLauncher.getHotseat() != null) { 3796 childrenLayouts.add(mLauncher.getHotseat().getLayout().getShortcutsAndWidgets()); 3797 } 3798 return childrenLayouts; 3799 } 3800 3801 public Folder getFolderForTag(Object tag) { 3802 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3803 getAllShortcutAndWidgetContainers(); 3804 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3805 int count = layout.getChildCount(); 3806 for (int i = 0; i < count; i++) { 3807 View child = layout.getChildAt(i); 3808 if (child instanceof Folder) { 3809 Folder f = (Folder) child; 3810 if (f.getInfo() == tag && f.getInfo().opened) { 3811 return f; 3812 } 3813 } 3814 } 3815 } 3816 return null; 3817 } 3818 3819 public View getViewForTag(Object tag) { 3820 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3821 getAllShortcutAndWidgetContainers(); 3822 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3823 int count = layout.getChildCount(); 3824 for (int i = 0; i < count; i++) { 3825 View child = layout.getChildAt(i); 3826 if (child.getTag() == tag) { 3827 return child; 3828 } 3829 } 3830 } 3831 return null; 3832 } 3833 3834 void clearDropTargets() { 3835 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3836 getAllShortcutAndWidgetContainers(); 3837 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3838 int childCount = layout.getChildCount(); 3839 for (int j = 0; j < childCount; j++) { 3840 View v = layout.getChildAt(j); 3841 if (v instanceof DropTarget) { 3842 mDragController.removeDropTarget((DropTarget) v); 3843 } 3844 } 3845 } 3846 } 3847 3848 // Removes ALL items that match a given package name, this is usually called when a package 3849 // has been removed and we want to remove all components (widgets, shortcuts, apps) that 3850 // belong to that package. 3851 void removeItemsByPackageName(final ArrayList<String> packages) { 3852 final HashSet<String> packageNames = new HashSet<String>(); 3853 packageNames.addAll(packages); 3854 3855 // Filter out all the ItemInfos that this is going to affect 3856 final HashSet<ItemInfo> infos = new HashSet<ItemInfo>(); 3857 final HashSet<ComponentName> cns = new HashSet<ComponentName>(); 3858 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3859 for (CellLayout layoutParent : cellLayouts) { 3860 ViewGroup layout = layoutParent.getShortcutsAndWidgets(); 3861 int childCount = layout.getChildCount(); 3862 for (int i = 0; i < childCount; ++i) { 3863 View view = layout.getChildAt(i); 3864 infos.add((ItemInfo) view.getTag()); 3865 } 3866 } 3867 LauncherModel.ItemInfoFilter filter = new LauncherModel.ItemInfoFilter() { 3868 @Override 3869 public boolean filterItem(ItemInfo parent, ItemInfo info, 3870 ComponentName cn) { 3871 if (packageNames.contains(cn.getPackageName())) { 3872 cns.add(cn); 3873 return true; 3874 } 3875 return false; 3876 } 3877 }; 3878 LauncherModel.filterItemInfos(infos, filter); 3879 3880 // Remove the affected components 3881 removeItemsByComponentName(cns); 3882 } 3883 3884 // Removes items that match the application info specified, when applications are removed 3885 // as a part of an update, this is called to ensure that other widgets and application 3886 // shortcuts are not removed. 3887 void removeItemsByApplicationInfo(final ArrayList<ApplicationInfo> appInfos) { 3888 // Just create a hash table of all the specific components that this will affect 3889 HashSet<ComponentName> cns = new HashSet<ComponentName>(); 3890 for (ApplicationInfo info : appInfos) { 3891 cns.add(info.componentName); 3892 } 3893 3894 // Remove all the things 3895 removeItemsByComponentName(cns); 3896 } 3897 3898 void removeItemsByComponentName(final HashSet<ComponentName> componentNames) { 3899 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3900 for (final CellLayout layoutParent: cellLayouts) { 3901 final ViewGroup layout = layoutParent.getShortcutsAndWidgets(); 3902 3903 final HashMap<ItemInfo, View> children = new HashMap<ItemInfo, View>(); 3904 for (int j = 0; j < layout.getChildCount(); j++) { 3905 final View view = layout.getChildAt(j); 3906 children.put((ItemInfo) view.getTag(), view); 3907 } 3908 3909 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3910 final HashMap<FolderInfo, ArrayList<ShortcutInfo>> folderAppsToRemove = 3911 new HashMap<FolderInfo, ArrayList<ShortcutInfo>>(); 3912 LauncherModel.ItemInfoFilter filter = new LauncherModel.ItemInfoFilter() { 3913 @Override 3914 public boolean filterItem(ItemInfo parent, ItemInfo info, 3915 ComponentName cn) { 3916 if (parent instanceof FolderInfo) { 3917 if (componentNames.contains(cn)) { 3918 FolderInfo folder = (FolderInfo) parent; 3919 ArrayList<ShortcutInfo> appsToRemove; 3920 if (folderAppsToRemove.containsKey(folder)) { 3921 appsToRemove = folderAppsToRemove.get(folder); 3922 } else { 3923 appsToRemove = new ArrayList<ShortcutInfo>(); 3924 folderAppsToRemove.put(folder, appsToRemove); 3925 } 3926 appsToRemove.add((ShortcutInfo) info); 3927 return true; 3928 } 3929 } else { 3930 if (componentNames.contains(cn)) { 3931 childrenToRemove.add(children.get(info)); 3932 return true; 3933 } 3934 } 3935 return false; 3936 } 3937 }; 3938 LauncherModel.filterItemInfos(children.keySet(), filter); 3939 3940 // Remove all the apps from their folders 3941 for (FolderInfo folder : folderAppsToRemove.keySet()) { 3942 ArrayList<ShortcutInfo> appsToRemove = folderAppsToRemove.get(folder); 3943 for (ShortcutInfo info : appsToRemove) { 3944 folder.remove(info); 3945 } 3946 } 3947 3948 // Remove all the other children 3949 for (View child : childrenToRemove) { 3950 // Note: We can not remove the view directly from CellLayoutChildren as this 3951 // does not re-mark the spaces as unoccupied. 3952 layoutParent.removeViewInLayout(child); 3953 if (child instanceof DropTarget) { 3954 mDragController.removeDropTarget((DropTarget) child); 3955 } 3956 } 3957 3958 if (childrenToRemove.size() > 0) { 3959 layout.requestLayout(); 3960 layout.invalidate(); 3961 } 3962 } 3963 3964 // Strip all the empty screens 3965 stripEmptyScreens(); 3966 3967 // Clean up new-apps animation list 3968 final Context context = getContext(); 3969 post(new Runnable() { 3970 @Override 3971 public void run() { 3972 String spKey = LauncherAppState.getSharedPreferencesKey(); 3973 SharedPreferences sp = context.getSharedPreferences(spKey, 3974 Context.MODE_PRIVATE); 3975 Set<String> newApps = sp.getStringSet(InstallShortcutReceiver.NEW_APPS_LIST_KEY, 3976 null); 3977 3978 // Remove all queued items that match the same package 3979 if (newApps != null) { 3980 synchronized (newApps) { 3981 Iterator<String> iter = newApps.iterator(); 3982 while (iter.hasNext()) { 3983 try { 3984 Intent intent = Intent.parseUri(iter.next(), 0); 3985 if (componentNames.contains(intent.getComponent())) { 3986 iter.remove(); 3987 } 3988 } catch (URISyntaxException e) {} 3989 } 3990 } 3991 } 3992 } 3993 }); 3994 } 3995 3996 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3997 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = getAllShortcutAndWidgetContainers(); 3998 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3999 int childCount = layout.getChildCount(); 4000 for (int j = 0; j < childCount; j++) { 4001 final View view = layout.getChildAt(j); 4002 Object tag = view.getTag(); 4003 4004 if (LauncherModel.isShortcutInfoUpdateable((ItemInfo) tag)) { 4005 ShortcutInfo info = (ShortcutInfo) tag; 4006 4007 final Intent intent = info.intent; 4008 final ComponentName name = intent.getComponent(); 4009 final int appCount = apps.size(); 4010 for (int k = 0; k < appCount; k++) { 4011 ApplicationInfo app = apps.get(k); 4012 if (app.componentName.equals(name)) { 4013 BubbleTextView shortcut = (BubbleTextView) view; 4014 info.updateIcon(mIconCache); 4015 info.title = app.title.toString(); 4016 shortcut.applyFromShortcutInfo(info, mIconCache); 4017 } 4018 } 4019 } 4020 } 4021 } 4022 } 4023 4024 void moveToDefaultScreen(boolean animate) { 4025 if (!isSmall()) { 4026 if (animate) { 4027 snapToPage(mDefaultPage); 4028 } else { 4029 setCurrentPage(mDefaultPage); 4030 } 4031 } 4032 View child = getChildAt(mDefaultPage); 4033 if (child != null) { 4034 child.requestFocus(); 4035 } 4036 } 4037 4038 @Override 4039 protected int getPageIndicatorMarker(int pageIndex) { 4040 if (getScreenIdForPageIndex(pageIndex) == CUSTOM_CONTENT_SCREEN_ID) { 4041 return R.layout.now_page_indicator_marker; 4042 } 4043 return super.getPageIndicatorMarker(pageIndex); 4044 } 4045 4046 @Override 4047 public void syncPages() { 4048 } 4049 4050 @Override 4051 public void syncPageItems(int page, boolean immediate) { 4052 } 4053 4054 protected String getCurrentPageDescription() { 4055 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 4056 return String.format(getContext().getString(R.string.workspace_scroll_format), 4057 page + 1, getChildCount()); 4058 } 4059 4060 public void getLocationInDragLayer(int[] loc) { 4061 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 4062 } 4063 4064 void setFadeForOverScroll(float fade) { 4065 mOverscrollFade = fade; 4066 float reducedFade = 0.5f + 0.5f * (1 - fade); 4067 final ViewGroup parent = (ViewGroup) getParent(); 4068 final ImageView qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 4069 4070 if (qsbDivider != null) qsbDivider.setAlpha(reducedFade); 4071 } 4072} 4073