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 17 package com.android.launcher3; 18 19 import android.animation.Animator; 20 import android.animation.AnimatorListenerAdapter; 21 import android.animation.AnimatorSet; 22 import android.animation.LayoutTransition; 23 import android.animation.ObjectAnimator; 24 import android.animation.PropertyValuesHolder; 25 import android.animation.ValueAnimator; 26 import android.animation.ValueAnimator.AnimatorUpdateListener; 27 import android.annotation.SuppressLint; 28 import android.app.WallpaperManager; 29 import android.appwidget.AppWidgetHostView; 30 import android.appwidget.AppWidgetProviderInfo; 31 import android.content.ComponentName; 32 import android.content.Context; 33 import android.content.res.Resources; 34 import android.graphics.Bitmap; 35 import android.graphics.Canvas; 36 import android.graphics.Matrix; 37 import android.graphics.Point; 38 import android.graphics.PointF; 39 import android.graphics.Rect; 40 import android.graphics.drawable.Drawable; 41 import android.os.Handler; 42 import android.os.IBinder; 43 import android.os.Parcelable; 44 import android.util.AttributeSet; 45 import android.util.Log; 46 import android.util.Property; 47 import android.util.SparseArray; 48 import android.view.MotionEvent; 49 import android.view.View; 50 import android.view.ViewDebug; 51 import android.view.ViewGroup; 52 import android.view.accessibility.AccessibilityManager; 53 import android.view.animation.DecelerateInterpolator; 54 import android.view.animation.Interpolator; 55 import android.widget.TextView; 56 57 import com.android.launcher3.Launcher.CustomContentCallbacks; 58 import com.android.launcher3.Launcher.LauncherOverlay; 59 import com.android.launcher3.UninstallDropTarget.DropTargetSource; 60 import com.android.launcher3.accessibility.AccessibileDragListenerAdapter; 61 import com.android.launcher3.accessibility.OverviewAccessibilityDelegate; 62 import com.android.launcher3.accessibility.OverviewScreenAccessibilityDelegate; 63 import com.android.launcher3.accessibility.WorkspaceAccessibilityHelper; 64 import com.android.launcher3.compat.AppWidgetManagerCompat; 65 import com.android.launcher3.compat.UserHandleCompat; 66 import com.android.launcher3.config.FeatureFlags; 67 import com.android.launcher3.config.ProviderConfig; 68 import com.android.launcher3.dragndrop.DragController; 69 import com.android.launcher3.dragndrop.DragLayer; 70 import com.android.launcher3.dragndrop.DragOptions; 71 import com.android.launcher3.dragndrop.DragScroller; 72 import com.android.launcher3.dragndrop.DragView; 73 import com.android.launcher3.dragndrop.SpringLoadedDragController; 74 import com.android.launcher3.folder.Folder; 75 import com.android.launcher3.folder.FolderIcon; 76 import com.android.launcher3.graphics.DragPreviewProvider; 77 import com.android.launcher3.userevent.nano.LauncherLogProto; 78 import com.android.launcher3.userevent.nano.LauncherLogProto.Target; 79 import com.android.launcher3.util.ItemInfoMatcher; 80 import com.android.launcher3.util.LongArrayMap; 81 import com.android.launcher3.util.MultiStateAlphaController; 82 import com.android.launcher3.util.Thunk; 83 import com.android.launcher3.util.VerticalFlingDetector; 84 import com.android.launcher3.util.WallpaperOffsetInterpolator; 85 import com.android.launcher3.widget.PendingAddShortcutInfo; 86 import com.android.launcher3.widget.PendingAddWidgetInfo; 87 88 import java.util.ArrayList; 89 import java.util.HashMap; 90 import java.util.HashSet; 91 92 /** 93 * The workspace is a wide area with a wallpaper and a finite number of pages. 94 * Each page contains a number of icons, folders or widgets the user can 95 * interact with. A workspace is meant to be used with a fixed width only. 96 */ 97 public class Workspace extends PagedView 98 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 99 DragController.DragListener, LauncherTransitionable, ViewGroup.OnHierarchyChangeListener, 100 Insettable, DropTargetSource { 101 private static final String TAG = "Launcher.Workspace"; 102 103 private static boolean ENFORCE_DRAG_EVENT_ORDER = false; 104 105 private static final int SNAP_OFF_EMPTY_SCREEN_DURATION = 400; 106 private static final int FADE_EMPTY_SCREEN_DURATION = 150; 107 108 private static final int ADJACENT_SCREEN_DROP_DURATION = 300; 109 110 private static final boolean MAP_NO_RECURSE = false; 111 private static final boolean MAP_RECURSE = true; 112 113 // The screen id used for the empty screen always present to the right. 114 public static final long EXTRA_EMPTY_SCREEN_ID = -201; 115 // The is the first screen. It is always present, even if its empty. 116 public static final long FIRST_SCREEN_ID = 0; 117 118 private final static long CUSTOM_CONTENT_SCREEN_ID = -301; 119 120 private static final long CUSTOM_CONTENT_GESTURE_DELAY = 200; 121 private long mTouchDownTime = -1; 122 private long mCustomContentShowTime = -1; 123 124 private LayoutTransition mLayoutTransition; 125 @Thunk final WallpaperManager mWallpaperManager; 126 127 private ShortcutAndWidgetContainer mDragSourceInternal; 128 129 @Thunk LongArrayMap<CellLayout> mWorkspaceScreens = new LongArrayMap<>(); 130 @Thunk ArrayList<Long> mScreenOrder = new ArrayList<Long>(); 131 132 @Thunk Runnable mRemoveEmptyScreenRunnable; 133 @Thunk boolean mDeferRemoveExtraEmptyScreen = false; 134 135 /** 136 * CellInfo for the cell that is currently being dragged 137 */ 138 private CellLayout.CellInfo mDragInfo; 139 140 /** 141 * Target drop area calculated during last acceptDrop call. 142 */ 143 @Thunk int[] mTargetCell = new int[2]; 144 private int mDragOverX = -1; 145 private int mDragOverY = -1; 146 147 CustomContentCallbacks mCustomContentCallbacks; 148 boolean mCustomContentShowing; 149 private float mLastCustomContentScrollProgress = -1f; 150 private String mCustomContentDescription = ""; 151 152 /** 153 * The CellLayout that is currently being dragged over 154 */ 155 @Thunk CellLayout mDragTargetLayout = null; 156 /** 157 * The CellLayout that we will show as highlighted 158 */ 159 private CellLayout mDragOverlappingLayout = null; 160 161 /** 162 * The CellLayout which will be dropped to 163 */ 164 private CellLayout mDropToLayout = null; 165 166 @Thunk Launcher mLauncher; 167 @Thunk IconCache mIconCache; 168 @Thunk DragController mDragController; 169 170 // These are temporary variables to prevent having to allocate a new object just to 171 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 172 private static final Rect sTempRect = new Rect(); 173 private final int[] mTempXY = new int[2]; 174 @Thunk float[] mDragViewVisualCenter = new float[2]; 175 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 176 private int[] mTempVisiblePagesRange = new int[2]; 177 private Matrix mTempMatrix = new Matrix(); 178 179 private SpringLoadedDragController mSpringLoadedDragController; 180 private float mOverviewModeShrinkFactor; 181 182 // State variable that indicates whether the pages are small (ie when you're 183 // in all apps or customize mode) 184 185 public enum State { 186 NORMAL (false, false), 187 NORMAL_HIDDEN (false, false), 188 SPRING_LOADED (false, true), 189 OVERVIEW (true, true), 190 OVERVIEW_HIDDEN (true, false); 191 192 public final boolean shouldUpdateWidget; 193 public final boolean hasMultipleVisiblePages; 194 195 State(boolean shouldUpdateWidget, boolean hasMultipleVisiblePages) { 196 this.shouldUpdateWidget = shouldUpdateWidget; 197 this.hasMultipleVisiblePages = hasMultipleVisiblePages; 198 } 199 } 200 201 // Direction used for moving the workspace and hotseat UI 202 public enum Direction { 203 X (TRANSLATION_X), 204 Y (TRANSLATION_Y); 205 206 private final Property<View, Float> viewProperty; 207 208 Direction(Property<View, Float> viewProperty) { 209 this.viewProperty = viewProperty; 210 } 211 } 212 213 private static final int HOTSEAT_STATE_ALPHA_INDEX = 2; 214 215 /** 216 * These values correspond to {@link Direction#X} & {@link Direction#Y} 217 */ 218 private float[] mPageAlpha = new float[] {1, 1}; 219 /** 220 * Hotseat alpha can be changed when moving horizontally, vertically, changing states. 221 * The values correspond to {@link Direction#X}, {@link Direction#Y} & 222 * {@link #HOTSEAT_STATE_ALPHA_INDEX} respectively. 223 */ 224 private float[] mHotseatAlpha = new float[] {1, 1, 1}; 225 226 public static final int QSB_ALPHA_INDEX_STATE_CHANGE = 0; 227 public static final int QSB_ALPHA_INDEX_Y_TRANSLATION = 1; 228 public static final int QSB_ALPHA_INDEX_PAGE_SCROLL = 2; 229 public static final int QSB_ALPHA_INDEX_OVERLAY_SCROLL = 3; 230 231 232 MultiStateAlphaController mQsbAlphaController; 233 234 @ViewDebug.ExportedProperty(category = "launcher") 235 private State mState = State.NORMAL; 236 private boolean mIsSwitchingState = false; 237 238 boolean mAnimatingViewIntoPlace = false; 239 boolean mChildrenLayersEnabled = true; 240 241 private boolean mStripScreensOnPageStopMoving = false; 242 243 /** Is the user is dragging an item near the edge of a page? */ 244 private boolean mInScrollArea = false; 245 246 private DragPreviewProvider mOutlineProvider = null; 247 public static final int DRAG_BITMAP_PADDING = DragPreviewProvider.DRAG_BITMAP_PADDING; 248 private boolean mWorkspaceFadeInAdjacentScreens; 249 250 final WallpaperOffsetInterpolator mWallpaperOffset; 251 private boolean mUnlockWallpaperFromDefaultPageOnLayout; 252 253 @Thunk Runnable mDelayedResizeRunnable; 254 private Runnable mDelayedSnapToPageRunnable; 255 256 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 257 private static final int FOLDER_CREATION_TIMEOUT = 0; 258 public static final int REORDER_TIMEOUT = 350; 259 private final Alarm mFolderCreationAlarm = new Alarm(); 260 private final Alarm mReorderAlarm = new Alarm(); 261 private FolderIcon.PreviewBackground mFolderCreateBg; 262 private FolderIcon mDragOverFolderIcon = null; 263 private boolean mCreateUserFolderOnDrop = false; 264 private boolean mAddToExistingFolderOnDrop = false; 265 private float mMaxDistanceForFolderCreation; 266 267 private final Canvas mCanvas = new Canvas(); 268 269 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 270 private float mXDown; 271 private float mYDown; 272 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 273 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 274 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 275 276 // Relating to the animation of items being dropped externally 277 public static final int ANIMATE_INTO_POSITION_AND_DISAPPEAR = 0; 278 public static final int ANIMATE_INTO_POSITION_AND_REMAIN = 1; 279 public static final int ANIMATE_INTO_POSITION_AND_RESIZE = 2; 280 public static final int COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION = 3; 281 public static final int CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION = 4; 282 283 // Related to dragging, folder creation and reordering 284 private static final int DRAG_MODE_NONE = 0; 285 private static final int DRAG_MODE_CREATE_FOLDER = 1; 286 private static final int DRAG_MODE_ADD_TO_FOLDER = 2; 287 private static final int DRAG_MODE_REORDER = 3; 288 private int mDragMode = DRAG_MODE_NONE; 289 @Thunk int mLastReorderX = -1; 290 @Thunk int mLastReorderY = -1; 291 292 private SparseArray<Parcelable> mSavedStates; 293 private final ArrayList<Integer> mRestoredPages = new ArrayList<Integer>(); 294 295 private float mCurrentScale; 296 private float mTransitionProgress; 297 298 @Thunk Runnable mDeferredAction; 299 private boolean mDeferDropAfterUninstall; 300 private boolean mUninstallSuccessful; 301 302 // State related to Launcher Overlay 303 LauncherOverlay mLauncherOverlay; 304 boolean mScrollInteractionBegan; 305 boolean mStartedSendingScrollEvents; 306 float mLastOverlaySroll = 0; 307 // Total over scrollX in the overlay direction. 308 private int mUnboundedScrollX; 309 private boolean mForceDrawAdjacentPages = false; 310 // Total over scrollX in the overlay direction. 311 private float mOverlayTranslation; 312 private int mFirstPageScrollX; 313 private boolean mIgnoreQsbScroll; 314 315 // Handles workspace state transitions 316 private WorkspaceStateTransitionAnimation mStateTransitionAnimation; 317 318 private AccessibilityDelegate mPagesAccessibilityDelegate; 319 private OnStateChangeListener mOnStateChangeListener; 320 321 /** 322 * Used to inflate the Workspace from XML. 323 * 324 * @param context The application's context. 325 * @param attrs The attributes set containing the Workspace's customization values. 326 */ 327 public Workspace(Context context, AttributeSet attrs) { 328 this(context, attrs, 0); 329 } 330 331 /** 332 * Used to inflate the Workspace from XML. 333 * 334 * @param context The application's context. 335 * @param attrs The attributes set containing the Workspace's customization values. 336 * @param defStyle Unused. 337 */ 338 public Workspace(Context context, AttributeSet attrs, int defStyle) { 339 super(context, attrs, defStyle); 340 341 mLauncher = Launcher.getLauncher(context); 342 mStateTransitionAnimation = new WorkspaceStateTransitionAnimation(mLauncher, this); 343 final Resources res = getResources(); 344 DeviceProfile grid = mLauncher.getDeviceProfile(); 345 mWorkspaceFadeInAdjacentScreens = grid.shouldFadeAdjacentWorkspaceScreens(); 346 mWallpaperManager = WallpaperManager.getInstance(context); 347 348 mWallpaperOffset = new WallpaperOffsetInterpolator(this); 349 mOverviewModeShrinkFactor = 350 res.getInteger(R.integer.config_workspaceOverviewShrinkPercentage) / 100f; 351 352 setOnHierarchyChangeListener(this); 353 setHapticFeedbackEnabled(false); 354 355 initWorkspace(); 356 357 // Disable multitouch across the workspace/all apps/customize tray 358 setMotionEventSplittingEnabled(true); 359 } 360 361 @Override 362 public void setInsets(Rect insets) { 363 mInsets.set(insets); 364 365 CellLayout customScreen = getScreenWithId(CUSTOM_CONTENT_SCREEN_ID); 366 if (customScreen != null) { 367 View customContent = customScreen.getShortcutsAndWidgets().getChildAt(0); 368 if (customContent instanceof Insettable) { 369 ((Insettable) customContent).setInsets(mInsets); 370 } 371 } 372 } 373 374 public void setOnStateChangeListener(OnStateChangeListener listener) { 375 mOnStateChangeListener = listener; 376 } 377 378 // estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each 379 // dimension if unsuccessful 380 public int[] estimateItemSize(ItemInfo itemInfo, boolean springLoaded) { 381 float shrinkFactor = mLauncher.getDeviceProfile().workspaceSpringLoadShrinkFactor; 382 int[] size = new int[2]; 383 if (getChildCount() > 0) { 384 // Use the first non-custom page to estimate the child position 385 CellLayout cl = (CellLayout) getChildAt(numCustomPages()); 386 Rect r = estimateItemPosition(cl, 0, 0, itemInfo.spanX, itemInfo.spanY); 387 size[0] = r.width(); 388 size[1] = r.height(); 389 if (springLoaded) { 390 size[0] *= shrinkFactor; 391 size[1] *= shrinkFactor; 392 } 393 return size; 394 } else { 395 size[0] = Integer.MAX_VALUE; 396 size[1] = Integer.MAX_VALUE; 397 return size; 398 } 399 } 400 401 public Rect estimateItemPosition(CellLayout cl, int hCell, int vCell, int hSpan, int vSpan) { 402 Rect r = new Rect(); 403 cl.cellToRect(hCell, vCell, hSpan, vSpan, r); 404 return r; 405 } 406 407 @Override 408 public void onDragStart(DropTarget.DragObject dragObject, DragOptions options) { 409 if (ENFORCE_DRAG_EVENT_ORDER) { 410 enfoceDragParity("onDragStart", 0, 0); 411 } 412 413 if (mOutlineProvider != null) { 414 // The outline is used to visualize where the item will land if dropped 415 mOutlineProvider.generateDragOutline(mCanvas); 416 } 417 418 updateChildrenLayersEnabled(false); 419 mLauncher.onDragStarted(); 420 mLauncher.lockScreenOrientation(); 421 mLauncher.onInteractionBegin(); 422 // Prevent any Un/InstallShortcutReceivers from updating the db while we are dragging 423 InstallShortcutReceiver.enableInstallQueue(); 424 425 // Do not add a new page if it is a accessible drag which was not started by the workspace. 426 // We do not support accessibility drag from other sources and instead provide a direct 427 // action for move/add to homescreen. 428 // When a accessible drag is started by the folder, we only allow rearranging withing the 429 // folder. 430 boolean addNewPage = !(options.isAccessibleDrag && dragObject.dragSource != this); 431 432 if (addNewPage) { 433 mDeferRemoveExtraEmptyScreen = false; 434 addExtraEmptyScreenOnDrag(); 435 436 if (dragObject.dragInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET 437 && dragObject.dragSource != this) { 438 // When dragging a widget from different source, move to a page which has 439 // enough space to place this widget (after rearranging/resizing). We special case 440 // widgets as they cannot be placed inside a folder. 441 // Start at the current page and search right (on LTR) until finding a page with 442 // enough space. Since an empty screen is the furthest right, a page must be found. 443 int currentPage = getPageNearestToCenterOfScreen(); 444 for (int pageIndex = currentPage; pageIndex < getPageCount(); pageIndex++) { 445 CellLayout page = (CellLayout) getPageAt(pageIndex); 446 if (page.hasReorderSolution(dragObject.dragInfo)) { 447 setCurrentPage(pageIndex); 448 break; 449 } 450 } 451 } 452 } 453 454 if (!FeatureFlags.LAUNCHER3_LEGACY_WORKSPACE_DND) { 455 // Always enter the spring loaded mode 456 mLauncher.enterSpringLoadedDragMode(); 457 } 458 } 459 460 public void deferRemoveExtraEmptyScreen() { 461 mDeferRemoveExtraEmptyScreen = true; 462 } 463 464 @Override 465 public void onDragEnd() { 466 if (ENFORCE_DRAG_EVENT_ORDER) { 467 enfoceDragParity("onDragEnd", 0, 0); 468 } 469 470 if (!mDeferRemoveExtraEmptyScreen) { 471 removeExtraEmptyScreen(true, mDragSourceInternal != null); 472 } 473 474 updateChildrenLayersEnabled(false); 475 mLauncher.unlockScreenOrientation(false); 476 477 // Re-enable any Un/InstallShortcutReceiver and now process any queued items 478 InstallShortcutReceiver.disableAndFlushInstallQueue(getContext()); 479 480 mDragSourceInternal = null; 481 mLauncher.onInteractionEnd(); 482 } 483 484 /** 485 * Initializes various states for this workspace. 486 */ 487 protected void initWorkspace() { 488 mCurrentPage = getDefaultPage(); 489 LauncherAppState app = LauncherAppState.getInstance(); 490 DeviceProfile grid = mLauncher.getDeviceProfile(); 491 mIconCache = app.getIconCache(); 492 setWillNotDraw(false); 493 setClipChildren(false); 494 setClipToPadding(false); 495 setChildrenDrawnWithCacheEnabled(true); 496 497 setMinScale(mOverviewModeShrinkFactor); 498 setupLayoutTransition(); 499 500 mMaxDistanceForFolderCreation = (0.55f * grid.iconSizePx); 501 502 // Set the wallpaper dimensions when Launcher starts up 503 setWallpaperDimension(); 504 505 setEdgeGlowColor(getResources().getColor(R.color.workspace_edge_effect_color)); 506 } 507 508 @Override 509 public void initParentViews(View parent) { 510 super.initParentViews(parent); 511 mPageIndicator.setAccessibilityDelegate(new OverviewAccessibilityDelegate()); 512 mQsbAlphaController = new MultiStateAlphaController(mLauncher.getQsbContainer(), 4); 513 } 514 515 private int getDefaultPage() { 516 return numCustomPages(); 517 } 518 519 private void setupLayoutTransition() { 520 // We want to show layout transitions when pages are deleted, to close the gap. 521 mLayoutTransition = new LayoutTransition(); 522 mLayoutTransition.enableTransitionType(LayoutTransition.DISAPPEARING); 523 mLayoutTransition.enableTransitionType(LayoutTransition.CHANGE_DISAPPEARING); 524 mLayoutTransition.disableTransitionType(LayoutTransition.APPEARING); 525 mLayoutTransition.disableTransitionType(LayoutTransition.CHANGE_APPEARING); 526 setLayoutTransition(mLayoutTransition); 527 } 528 529 void enableLayoutTransitions() { 530 setLayoutTransition(mLayoutTransition); 531 } 532 void disableLayoutTransitions() { 533 setLayoutTransition(null); 534 } 535 536 @Override 537 public void onChildViewAdded(View parent, View child) { 538 if (!(child instanceof CellLayout)) { 539 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 540 } 541 CellLayout cl = ((CellLayout) child); 542 cl.setOnInterceptTouchListener(this); 543 cl.setClickable(true); 544 cl.setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_NO); 545 super.onChildViewAdded(parent, child); 546 } 547 548 protected boolean shouldDrawChild(View child) { 549 final CellLayout cl = (CellLayout) child; 550 return super.shouldDrawChild(child) && 551 (mIsSwitchingState || 552 cl.getShortcutsAndWidgets().getAlpha() > 0 || 553 cl.getBackgroundAlpha() > 0); 554 } 555 556 /** 557 * @return The open folder on the current screen, or null if there is none 558 */ 559 public Folder getOpenFolder() { 560 DragLayer dragLayer = mLauncher.getDragLayer(); 561 // Iterate in reverse order. Folder is added later to the dragLayer, 562 // and will be one of the last views. 563 for (int i = dragLayer.getChildCount() - 1; i >= 0; i--) { 564 View child = dragLayer.getChildAt(i); 565 if (child instanceof Folder) { 566 Folder folder = (Folder) child; 567 if (folder.getInfo().opened) 568 return folder; 569 } 570 } 571 return null; 572 } 573 574 boolean isTouchActive() { 575 return mTouchState != TOUCH_STATE_REST; 576 } 577 578 private int getEmbeddedQsbId() { 579 return mLauncher.getDeviceProfile().isVerticalBarLayout() 580 ? R.id.qsb_container : R.id.workspace_blocked_row; 581 } 582 583 /** 584 * Initializes and binds the first page 585 * @param qsb an exisitng qsb to recycle or null. 586 */ 587 public void bindAndInitFirstWorkspaceScreen(View qsb) { 588 if (!FeatureFlags.QSB_ON_FIRST_SCREEN) { 589 return; 590 } 591 // Add the first page 592 CellLayout firstPage = insertNewWorkspaceScreen(Workspace.FIRST_SCREEN_ID, 0); 593 if (FeatureFlags.PULLDOWN_SEARCH) { 594 firstPage.setOnTouchListener(new VerticalFlingDetector(mLauncher) { 595 // detect fling when touch started from empty space 596 @Override 597 public boolean onTouch(View v, MotionEvent ev) { 598 if (workspaceInModalState()) return false; 599 if (shouldConsumeTouch(v)) return true; 600 if (super.onTouch(v, ev)) { 601 mLauncher.startSearch("", false, null, false); 602 return true; 603 } 604 return false; 605 } 606 }); 607 firstPage.setOnInterceptTouchListener(new VerticalFlingDetector(mLauncher) { 608 // detect fling when touch started from on top of the icons 609 @Override 610 public boolean onTouch(View v, MotionEvent ev) { 611 if (shouldConsumeTouch(v)) return true; 612 if (super.onTouch(v, ev)) { 613 mLauncher.startSearch("", false, null, false); 614 return true; 615 } 616 return false; 617 } 618 }); 619 } 620 // Always add a QSB on the first screen. 621 if (qsb == null) { 622 // In transposed layout, we add the QSB in the Grid. As workspace does not touch the 623 // edges, we do not need a full width QSB. 624 qsb = mLauncher.getLayoutInflater().inflate( 625 mLauncher.getDeviceProfile().isVerticalBarLayout() 626 ? R.layout.qsb_container : R.layout.qsb_blocker_view, 627 firstPage, false); 628 } 629 630 CellLayout.LayoutParams lp = new CellLayout.LayoutParams(0, 0, firstPage.getCountX(), 1); 631 lp.canReorder = false; 632 if (!firstPage.addViewToCellLayout(qsb, 0, getEmbeddedQsbId(), lp, true)) { 633 Log.e(TAG, "Failed to add to item at (0, 0) to CellLayout"); 634 } 635 } 636 637 @Override 638 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 639 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 640 641 // Update the QSB to match the cell height. This is treating the QSB essentially as a child 642 // of workspace despite that it's not a true child. 643 // Note that it relies on the strict ordering of measuring the workspace before the QSB 644 // at the dragLayer level. 645 if (getChildCount() > 0) { 646 CellLayout firstPage = (CellLayout) getChildAt(0); 647 int cellHeight = firstPage.getCellHeight(); 648 649 View qsbContainer = mLauncher.getQsbContainer(); 650 ViewGroup.LayoutParams lp = qsbContainer.getLayoutParams(); 651 if (cellHeight > 0 && lp.height != cellHeight) { 652 lp.height = cellHeight; 653 qsbContainer.setLayoutParams(lp); 654 } 655 } 656 } 657 658 public void removeAllWorkspaceScreens() { 659 // Disable all layout transitions before removing all pages to ensure that we don't get the 660 // transition animations competing with us changing the scroll when we add pages or the 661 // custom content screen 662 disableLayoutTransitions(); 663 664 // Since we increment the current page when we call addCustomContentPage via bindScreens 665 // (and other places), we need to adjust the current page back when we clear the pages 666 if (hasCustomContent()) { 667 removeCustomContentPage(); 668 } 669 670 // Recycle the QSB widget 671 View qsb = findViewById(getEmbeddedQsbId()); 672 if (qsb != null) { 673 ((ViewGroup) qsb.getParent()).removeView(qsb); 674 } 675 676 // Remove the pages and clear the screen models 677 removeAllViews(); 678 mScreenOrder.clear(); 679 mWorkspaceScreens.clear(); 680 681 // Ensure that the first page is always present 682 bindAndInitFirstWorkspaceScreen(qsb); 683 684 // Re-enable the layout transitions 685 enableLayoutTransitions(); 686 } 687 688 public void insertNewWorkspaceScreenBeforeEmptyScreen(long screenId) { 689 // Find the index to insert this view into. If the empty screen exists, then 690 // insert it before that. 691 int insertIndex = mScreenOrder.indexOf(EXTRA_EMPTY_SCREEN_ID); 692 if (insertIndex < 0) { 693 insertIndex = mScreenOrder.size(); 694 } 695 insertNewWorkspaceScreen(screenId, insertIndex); 696 } 697 698 public void insertNewWorkspaceScreen(long screenId) { 699 insertNewWorkspaceScreen(screenId, getChildCount()); 700 } 701 702 public CellLayout insertNewWorkspaceScreen(long screenId, int insertIndex) { 703 if (mWorkspaceScreens.containsKey(screenId)) { 704 throw new RuntimeException("Screen id " + screenId + " already exists!"); 705 } 706 707 // Inflate the cell layout, but do not add it automatically so that we can get the newly 708 // created CellLayout. 709 CellLayout newScreen = (CellLayout) mLauncher.getLayoutInflater().inflate( 710 R.layout.workspace_screen, this, false /* attachToRoot */); 711 newScreen.setOnLongClickListener(mLongClickListener); 712 newScreen.setOnClickListener(mLauncher); 713 newScreen.setSoundEffectsEnabled(false); 714 mWorkspaceScreens.put(screenId, newScreen); 715 mScreenOrder.add(insertIndex, screenId); 716 addView(newScreen, insertIndex); 717 718 if (mLauncher.getAccessibilityDelegate().isInAccessibleDrag()) { 719 newScreen.enableAccessibleDrag(true, CellLayout.WORKSPACE_ACCESSIBILITY_DRAG); 720 } 721 722 return newScreen; 723 } 724 725 public void createCustomContentContainer() { 726 CellLayout customScreen = (CellLayout) 727 mLauncher.getLayoutInflater().inflate(R.layout.workspace_screen, this, false); 728 customScreen.disableDragTarget(); 729 customScreen.disableJailContent(); 730 731 mWorkspaceScreens.put(CUSTOM_CONTENT_SCREEN_ID, customScreen); 732 mScreenOrder.add(0, CUSTOM_CONTENT_SCREEN_ID); 733 734 // We want no padding on the custom content 735 customScreen.setPadding(0, 0, 0, 0); 736 737 addFullScreenPage(customScreen); 738 739 // Update the custom content hint 740 if (mRestorePage != INVALID_RESTORE_PAGE) { 741 mRestorePage = mRestorePage + 1; 742 } else { 743 setCurrentPage(getCurrentPage() + 1); 744 } 745 } 746 747 public void removeCustomContentPage() { 748 CellLayout customScreen = getScreenWithId(CUSTOM_CONTENT_SCREEN_ID); 749 if (customScreen == null) { 750 throw new RuntimeException("Expected custom content screen to exist"); 751 } 752 753 mWorkspaceScreens.remove(CUSTOM_CONTENT_SCREEN_ID); 754 mScreenOrder.remove(CUSTOM_CONTENT_SCREEN_ID); 755 removeView(customScreen); 756 757 if (mCustomContentCallbacks != null) { 758 mCustomContentCallbacks.onScrollProgressChanged(0); 759 mCustomContentCallbacks.onHide(); 760 } 761 762 mCustomContentCallbacks = null; 763 764 // Update the custom content hint 765 if (mRestorePage != INVALID_RESTORE_PAGE) { 766 mRestorePage = mRestorePage - 1; 767 } else { 768 setCurrentPage(getCurrentPage() - 1); 769 } 770 } 771 772 public void addToCustomContentPage(View customContent, CustomContentCallbacks callbacks, 773 String description) { 774 if (getPageIndexForScreenId(CUSTOM_CONTENT_SCREEN_ID) < 0) { 775 throw new RuntimeException("Expected custom content screen to exist"); 776 } 777 778 // Add the custom content to the full screen custom page 779 CellLayout customScreen = getScreenWithId(CUSTOM_CONTENT_SCREEN_ID); 780 int spanX = customScreen.getCountX(); 781 int spanY = customScreen.getCountY(); 782 CellLayout.LayoutParams lp = new CellLayout.LayoutParams(0, 0, spanX, spanY); 783 lp.canReorder = false; 784 lp.isFullscreen = true; 785 if (customContent instanceof Insettable) { 786 ((Insettable)customContent).setInsets(mInsets); 787 } 788 789 // Verify that the child is removed from any existing parent. 790 if (customContent.getParent() instanceof ViewGroup) { 791 ViewGroup parent = (ViewGroup) customContent.getParent(); 792 parent.removeView(customContent); 793 } 794 customScreen.removeAllViews(); 795 customContent.setFocusable(true); 796 customContent.setOnKeyListener(new FullscreenKeyEventListener()); 797 customContent.setOnFocusChangeListener(mLauncher.mFocusHandler 798 .getHideIndicatorOnFocusListener()); 799 customScreen.addViewToCellLayout(customContent, 0, 0, lp, true); 800 mCustomContentDescription = description; 801 802 mCustomContentCallbacks = callbacks; 803 } 804 805 public void addExtraEmptyScreenOnDrag() { 806 boolean lastChildOnScreen = false; 807 boolean childOnFinalScreen = false; 808 809 // Cancel any pending removal of empty screen 810 mRemoveEmptyScreenRunnable = null; 811 812 if (mDragSourceInternal != null) { 813 if (mDragSourceInternal.getChildCount() == 1) { 814 lastChildOnScreen = true; 815 } 816 CellLayout cl = (CellLayout) mDragSourceInternal.getParent(); 817 if (indexOfChild(cl) == getChildCount() - 1) { 818 childOnFinalScreen = true; 819 } 820 } 821 822 // If this is the last item on the final screen 823 if (lastChildOnScreen && childOnFinalScreen) { 824 return; 825 } 826 if (!mWorkspaceScreens.containsKey(EXTRA_EMPTY_SCREEN_ID)) { 827 insertNewWorkspaceScreen(EXTRA_EMPTY_SCREEN_ID); 828 } 829 } 830 831 public boolean addExtraEmptyScreen() { 832 if (!mWorkspaceScreens.containsKey(EXTRA_EMPTY_SCREEN_ID)) { 833 insertNewWorkspaceScreen(EXTRA_EMPTY_SCREEN_ID); 834 return true; 835 } 836 return false; 837 } 838 839 private void convertFinalScreenToEmptyScreenIfNecessary() { 840 if (mLauncher.isWorkspaceLoading()) { 841 // Invalid and dangerous operation if workspace is loading 842 return; 843 } 844 845 if (hasExtraEmptyScreen() || mScreenOrder.size() == 0) return; 846 long finalScreenId = mScreenOrder.get(mScreenOrder.size() - 1); 847 848 if (finalScreenId == CUSTOM_CONTENT_SCREEN_ID) return; 849 CellLayout finalScreen = mWorkspaceScreens.get(finalScreenId); 850 851 // If the final screen is empty, convert it to the extra empty screen 852 if (finalScreen.getShortcutsAndWidgets().getChildCount() == 0 && 853 !finalScreen.isDropPending()) { 854 mWorkspaceScreens.remove(finalScreenId); 855 mScreenOrder.remove(finalScreenId); 856 857 // if this is the last non-custom content screen, convert it to the empty screen 858 mWorkspaceScreens.put(EXTRA_EMPTY_SCREEN_ID, finalScreen); 859 mScreenOrder.add(EXTRA_EMPTY_SCREEN_ID); 860 861 // Update the model if we have changed any screens 862 mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); 863 } 864 } 865 866 public void removeExtraEmptyScreen(final boolean animate, boolean stripEmptyScreens) { 867 removeExtraEmptyScreenDelayed(animate, null, 0, stripEmptyScreens); 868 } 869 870 public void removeExtraEmptyScreenDelayed(final boolean animate, final Runnable onComplete, 871 final int delay, final boolean stripEmptyScreens) { 872 if (mLauncher.isWorkspaceLoading()) { 873 // Don't strip empty screens if the workspace is still loading 874 return; 875 } 876 877 if (delay > 0) { 878 postDelayed(new Runnable() { 879 @Override 880 public void run() { 881 removeExtraEmptyScreenDelayed(animate, onComplete, 0, stripEmptyScreens); 882 } 883 }, delay); 884 return; 885 } 886 887 convertFinalScreenToEmptyScreenIfNecessary(); 888 if (hasExtraEmptyScreen()) { 889 int emptyIndex = mScreenOrder.indexOf(EXTRA_EMPTY_SCREEN_ID); 890 if (getNextPage() == emptyIndex) { 891 snapToPage(getNextPage() - 1, SNAP_OFF_EMPTY_SCREEN_DURATION); 892 fadeAndRemoveEmptyScreen(SNAP_OFF_EMPTY_SCREEN_DURATION, FADE_EMPTY_SCREEN_DURATION, 893 onComplete, stripEmptyScreens); 894 } else { 895 snapToPage(getNextPage(), 0); 896 fadeAndRemoveEmptyScreen(0, FADE_EMPTY_SCREEN_DURATION, 897 onComplete, stripEmptyScreens); 898 } 899 return; 900 } else if (stripEmptyScreens) { 901 // If we're not going to strip the empty screens after removing 902 // the extra empty screen, do it right away. 903 stripEmptyScreens(); 904 } 905 906 if (onComplete != null) { 907 onComplete.run(); 908 } 909 } 910 911 private void fadeAndRemoveEmptyScreen(int delay, int duration, final Runnable onComplete, 912 final boolean stripEmptyScreens) { 913 // XXX: Do we need to update LM workspace screens below? 914 PropertyValuesHolder alpha = PropertyValuesHolder.ofFloat("alpha", 0f); 915 PropertyValuesHolder bgAlpha = PropertyValuesHolder.ofFloat("backgroundAlpha", 0f); 916 917 final CellLayout cl = mWorkspaceScreens.get(EXTRA_EMPTY_SCREEN_ID); 918 919 mRemoveEmptyScreenRunnable = new Runnable() { 920 @Override 921 public void run() { 922 if (hasExtraEmptyScreen()) { 923 mWorkspaceScreens.remove(EXTRA_EMPTY_SCREEN_ID); 924 mScreenOrder.remove(EXTRA_EMPTY_SCREEN_ID); 925 removeView(cl); 926 if (stripEmptyScreens) { 927 stripEmptyScreens(); 928 } 929 // Update the page indicator to reflect the removed page. 930 showPageIndicatorAtCurrentScroll(); 931 } 932 } 933 }; 934 935 ObjectAnimator oa = ObjectAnimator.ofPropertyValuesHolder(cl, alpha, bgAlpha); 936 oa.setDuration(duration); 937 oa.setStartDelay(delay); 938 oa.addListener(new AnimatorListenerAdapter() { 939 @Override 940 public void onAnimationEnd(Animator animation) { 941 if (mRemoveEmptyScreenRunnable != null) { 942 mRemoveEmptyScreenRunnable.run(); 943 } 944 if (onComplete != null) { 945 onComplete.run(); 946 } 947 } 948 }); 949 oa.start(); 950 } 951 952 public boolean hasExtraEmptyScreen() { 953 int nScreens = getChildCount(); 954 nScreens = nScreens - numCustomPages(); 955 return mWorkspaceScreens.containsKey(EXTRA_EMPTY_SCREEN_ID) && nScreens > 1; 956 } 957 958 public long commitExtraEmptyScreen() { 959 if (mLauncher.isWorkspaceLoading()) { 960 // Invalid and dangerous operation if workspace is loading 961 return -1; 962 } 963 964 int index = getPageIndexForScreenId(EXTRA_EMPTY_SCREEN_ID); 965 CellLayout cl = mWorkspaceScreens.get(EXTRA_EMPTY_SCREEN_ID); 966 mWorkspaceScreens.remove(EXTRA_EMPTY_SCREEN_ID); 967 mScreenOrder.remove(EXTRA_EMPTY_SCREEN_ID); 968 969 long newId = LauncherSettings.Settings.call(getContext().getContentResolver(), 970 LauncherSettings.Settings.METHOD_NEW_SCREEN_ID) 971 .getLong(LauncherSettings.Settings.EXTRA_VALUE); 972 mWorkspaceScreens.put(newId, cl); 973 mScreenOrder.add(newId); 974 975 // Update the model for the new screen 976 mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); 977 978 return newId; 979 } 980 981 public CellLayout getScreenWithId(long screenId) { 982 return mWorkspaceScreens.get(screenId); 983 } 984 985 public long getIdForScreen(CellLayout layout) { 986 int index = mWorkspaceScreens.indexOfValue(layout); 987 if (index != -1) { 988 return mWorkspaceScreens.keyAt(index); 989 } 990 return -1; 991 } 992 993 public int getPageIndexForScreenId(long screenId) { 994 return indexOfChild(mWorkspaceScreens.get(screenId)); 995 } 996 997 public long getScreenIdForPageIndex(int index) { 998 if (0 <= index && index < mScreenOrder.size()) { 999 return mScreenOrder.get(index); 1000 } 1001 return -1; 1002 } 1003 1004 public ArrayList<Long> getScreenOrder() { 1005 return mScreenOrder; 1006 } 1007 1008 public void stripEmptyScreens() { 1009 if (mLauncher.isWorkspaceLoading()) { 1010 // Don't strip empty screens if the workspace is still loading. 1011 // This is dangerous and can result in data loss. 1012 return; 1013 } 1014 1015 if (isPageMoving()) { 1016 mStripScreensOnPageStopMoving = true; 1017 return; 1018 } 1019 1020 int currentPage = getNextPage(); 1021 ArrayList<Long> removeScreens = new ArrayList<Long>(); 1022 int total = mWorkspaceScreens.size(); 1023 for (int i = 0; i < total; i++) { 1024 long id = mWorkspaceScreens.keyAt(i); 1025 CellLayout cl = mWorkspaceScreens.valueAt(i); 1026 // FIRST_SCREEN_ID can never be removed. 1027 if ((!FeatureFlags.QSB_ON_FIRST_SCREEN || id > FIRST_SCREEN_ID) 1028 && cl.getShortcutsAndWidgets().getChildCount() == 0) { 1029 removeScreens.add(id); 1030 } 1031 } 1032 1033 boolean isInAccessibleDrag = mLauncher.getAccessibilityDelegate().isInAccessibleDrag(); 1034 1035 // We enforce at least one page to add new items to. In the case that we remove the last 1036 // such screen, we convert the last screen to the empty screen 1037 int minScreens = 1 + numCustomPages(); 1038 1039 int pageShift = 0; 1040 for (Long id: removeScreens) { 1041 CellLayout cl = mWorkspaceScreens.get(id); 1042 mWorkspaceScreens.remove(id); 1043 mScreenOrder.remove(id); 1044 1045 if (getChildCount() > minScreens) { 1046 if (indexOfChild(cl) < currentPage) { 1047 pageShift++; 1048 } 1049 1050 if (isInAccessibleDrag) { 1051 cl.enableAccessibleDrag(false, CellLayout.WORKSPACE_ACCESSIBILITY_DRAG); 1052 } 1053 1054 removeView(cl); 1055 } else { 1056 // if this is the last non-custom content screen, convert it to the empty screen 1057 mRemoveEmptyScreenRunnable = null; 1058 mWorkspaceScreens.put(EXTRA_EMPTY_SCREEN_ID, cl); 1059 mScreenOrder.add(EXTRA_EMPTY_SCREEN_ID); 1060 } 1061 } 1062 1063 if (!removeScreens.isEmpty()) { 1064 // Update the model if we have changed any screens 1065 mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); 1066 } 1067 1068 if (pageShift >= 0) { 1069 setCurrentPage(currentPage - pageShift); 1070 } 1071 } 1072 1073 // See implementation for parameter definition. 1074 void addInScreen(View child, long container, long screenId, 1075 int x, int y, int spanX, int spanY) { 1076 addInScreen(child, container, screenId, x, y, spanX, spanY, false, false); 1077 } 1078 1079 // At bind time, we use the rank (screenId) to compute x and y for hotseat items. 1080 // See implementation for parameter definition. 1081 public void addInScreenFromBind(View child, long container, long screenId, int x, int y, 1082 int spanX, int spanY) { 1083 addInScreen(child, container, screenId, x, y, spanX, spanY, false, true); 1084 } 1085 1086 // See implementation for parameter definition. 1087 void addInScreen(View child, long container, long screenId, int x, int y, int spanX, int spanY, 1088 boolean insert) { 1089 addInScreen(child, container, screenId, x, y, spanX, spanY, insert, false); 1090 } 1091 1092 /** 1093 * Adds the specified child in the specified screen. The position and dimension of 1094 * the child are defined by x, y, spanX and spanY. 1095 * 1096 * @param child The child to add in one of the workspace's screens. 1097 * @param screenId The screen in which to add the child. 1098 * @param x The X position of the child in the screen's grid. 1099 * @param y The Y position of the child in the screen's grid. 1100 * @param spanX The number of cells spanned horizontally by the child. 1101 * @param spanY The number of cells spanned vertically by the child. 1102 * @param insert When true, the child is inserted at the beginning of the children list. 1103 * @param computeXYFromRank When true, we use the rank (stored in screenId) to compute 1104 * the x and y position in which to place hotseat items. Otherwise 1105 * we use the x and y position to compute the rank. 1106 */ 1107 void addInScreen(View child, long container, long screenId, int x, int y, int spanX, int spanY, 1108 boolean insert, boolean computeXYFromRank) { 1109 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 1110 if (getScreenWithId(screenId) == null) { 1111 Log.e(TAG, "Skipping child, screenId " + screenId + " not found"); 1112 // DEBUGGING - Print out the stack trace to see where we are adding from 1113 new Throwable().printStackTrace(); 1114 return; 1115 } 1116 } 1117 if (screenId == EXTRA_EMPTY_SCREEN_ID) { 1118 // This should never happen 1119 throw new RuntimeException("Screen id should not be EXTRA_EMPTY_SCREEN_ID"); 1120 } 1121 1122 final CellLayout layout; 1123 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 1124 layout = mLauncher.getHotseat().getLayout(); 1125 child.setOnKeyListener(new HotseatIconKeyEventListener()); 1126 1127 // Hide folder title in the hotseat 1128 if (child instanceof FolderIcon) { 1129 ((FolderIcon) child).setTextVisible(false); 1130 } 1131 1132 if (computeXYFromRank) { 1133 x = mLauncher.getHotseat().getCellXFromOrder((int) screenId); 1134 y = mLauncher.getHotseat().getCellYFromOrder((int) screenId); 1135 } else { 1136 screenId = mLauncher.getHotseat().getOrderInHotseat(x, y); 1137 } 1138 } else { 1139 // Show folder title if not in the hotseat 1140 if (child instanceof FolderIcon) { 1141 ((FolderIcon) child).setTextVisible(true); 1142 } 1143 layout = getScreenWithId(screenId); 1144 child.setOnKeyListener(new IconKeyEventListener()); 1145 } 1146 1147 ViewGroup.LayoutParams genericLp = child.getLayoutParams(); 1148 CellLayout.LayoutParams lp; 1149 if (genericLp == null || !(genericLp instanceof CellLayout.LayoutParams)) { 1150 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 1151 } else { 1152 lp = (CellLayout.LayoutParams) genericLp; 1153 lp.cellX = x; 1154 lp.cellY = y; 1155 lp.cellHSpan = spanX; 1156 lp.cellVSpan = spanY; 1157 } 1158 1159 if (spanX < 0 && spanY < 0) { 1160 lp.isLockedToGrid = false; 1161 } 1162 1163 // Get the canonical child id to uniquely represent this view in this screen 1164 ItemInfo info = (ItemInfo) child.getTag(); 1165 int childId = mLauncher.getViewIdForItem(info); 1166 1167 boolean markCellsAsOccupied = !(child instanceof Folder); 1168 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 1169 // TODO: This branch occurs when the workspace is adding views 1170 // outside of the defined grid 1171 // maybe we should be deleting these items from the LauncherModel? 1172 Log.e(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 1173 } 1174 1175 if (!(child instanceof Folder)) { 1176 child.setHapticFeedbackEnabled(false); 1177 child.setOnLongClickListener(mLongClickListener); 1178 } 1179 if (child instanceof DropTarget) { 1180 mDragController.addDropTarget((DropTarget) child); 1181 } 1182 } 1183 1184 /** 1185 * Called directly from a CellLayout (not by the framework), after we've been added as a 1186 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 1187 * that it should intercept touch events, which is not something that is normally supported. 1188 */ 1189 @SuppressLint("ClickableViewAccessibility") 1190 @Override 1191 public boolean onTouch(View v, MotionEvent event) { 1192 return shouldConsumeTouch(v); 1193 } 1194 1195 private boolean shouldConsumeTouch(View v) { 1196 return (workspaceInModalState() || !isFinishedSwitchingState()) 1197 || (!workspaceInModalState() && indexOfChild(v) != mCurrentPage); 1198 } 1199 1200 public boolean isSwitchingState() { 1201 return mIsSwitchingState; 1202 } 1203 1204 /** This differs from isSwitchingState in that we take into account how far the transition 1205 * has completed. */ 1206 public boolean isFinishedSwitchingState() { 1207 return !mIsSwitchingState || (mTransitionProgress > 0.5f); 1208 } 1209 1210 protected void onWindowVisibilityChanged (int visibility) { 1211 mLauncher.onWindowVisibilityChanged(visibility); 1212 } 1213 1214 @Override 1215 public boolean dispatchUnhandledMove(View focused, int direction) { 1216 if (workspaceInModalState() || !isFinishedSwitchingState()) { 1217 // when the home screens are shrunken, shouldn't allow side-scrolling 1218 return false; 1219 } 1220 return super.dispatchUnhandledMove(focused, direction); 1221 } 1222 1223 @Override 1224 public boolean onInterceptTouchEvent(MotionEvent ev) { 1225 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 1226 case MotionEvent.ACTION_DOWN: 1227 mXDown = ev.getX(); 1228 mYDown = ev.getY(); 1229 mTouchDownTime = System.currentTimeMillis(); 1230 break; 1231 case MotionEvent.ACTION_POINTER_UP: 1232 case MotionEvent.ACTION_UP: 1233 if (mTouchState == TOUCH_STATE_REST) { 1234 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 1235 if (currentPage != null) { 1236 onWallpaperTap(ev); 1237 } 1238 } 1239 } 1240 return super.onInterceptTouchEvent(ev); 1241 } 1242 1243 @Override 1244 public boolean onGenericMotionEvent(MotionEvent event) { 1245 // Ignore pointer scroll events if the custom content doesn't allow scrolling. 1246 if ((getScreenIdForPageIndex(getCurrentPage()) == CUSTOM_CONTENT_SCREEN_ID) 1247 && (mCustomContentCallbacks != null) 1248 && !mCustomContentCallbacks.isScrollingAllowed()) { 1249 return false; 1250 } 1251 return super.onGenericMotionEvent(event); 1252 } 1253 1254 protected void reinflateWidgetsIfNecessary() { 1255 final int clCount = getChildCount(); 1256 for (int i = 0; i < clCount; i++) { 1257 CellLayout cl = (CellLayout) getChildAt(i); 1258 ShortcutAndWidgetContainer swc = cl.getShortcutsAndWidgets(); 1259 final int itemCount = swc.getChildCount(); 1260 for (int j = 0; j < itemCount; j++) { 1261 View v = swc.getChildAt(j); 1262 1263 if (v instanceof LauncherAppWidgetHostView 1264 && v.getTag() instanceof LauncherAppWidgetInfo) { 1265 LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) v.getTag(); 1266 LauncherAppWidgetHostView lahv = (LauncherAppWidgetHostView) v; 1267 if (lahv.isReinflateRequired()) { 1268 // Remove and rebind the current widget (which was inflated in the wrong 1269 // orientation), but don't delete it from the database 1270 mLauncher.removeItem(lahv, info, false /* deleteFromDb */); 1271 mLauncher.bindAppWidget(info); 1272 } 1273 } 1274 } 1275 } 1276 } 1277 1278 @Override 1279 protected void determineScrollingStart(MotionEvent ev) { 1280 if (!isFinishedSwitchingState()) return; 1281 1282 float deltaX = ev.getX() - mXDown; 1283 float absDeltaX = Math.abs(deltaX); 1284 float absDeltaY = Math.abs(ev.getY() - mYDown); 1285 1286 if (Float.compare(absDeltaX, 0f) == 0) return; 1287 1288 float slope = absDeltaY / absDeltaX; 1289 float theta = (float) Math.atan(slope); 1290 1291 if (absDeltaX > mTouchSlop || absDeltaY > mTouchSlop) { 1292 cancelCurrentPageLongPress(); 1293 } 1294 1295 boolean passRightSwipesToCustomContent = 1296 (mTouchDownTime - mCustomContentShowTime) > CUSTOM_CONTENT_GESTURE_DELAY; 1297 1298 boolean swipeInIgnoreDirection = mIsRtl ? deltaX < 0 : deltaX > 0; 1299 boolean onCustomContentScreen = 1300 getScreenIdForPageIndex(getCurrentPage()) == CUSTOM_CONTENT_SCREEN_ID; 1301 if (swipeInIgnoreDirection && onCustomContentScreen && passRightSwipesToCustomContent) { 1302 // Pass swipes to the right to the custom content page. 1303 return; 1304 } 1305 1306 if (onCustomContentScreen && (mCustomContentCallbacks != null) 1307 && !mCustomContentCallbacks.isScrollingAllowed()) { 1308 // Don't allow workspace scrolling if the current custom content screen doesn't allow 1309 // scrolling. 1310 return; 1311 } 1312 1313 if (theta > MAX_SWIPE_ANGLE) { 1314 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 1315 return; 1316 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 1317 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 1318 // increase the touch slop to make it harder to begin scrolling the workspace. This 1319 // results in vertically scrolling widgets to more easily. The higher the angle, the 1320 // more we increase touch slop. 1321 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 1322 float extraRatio = (float) 1323 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 1324 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 1325 } else { 1326 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 1327 super.determineScrollingStart(ev); 1328 } 1329 } 1330 1331 protected void onPageBeginMoving() { 1332 super.onPageBeginMoving(); 1333 1334 if (isHardwareAccelerated()) { 1335 updateChildrenLayersEnabled(false); 1336 } else { 1337 if (mNextPage != INVALID_PAGE) { 1338 // we're snapping to a particular screen 1339 enableChildrenCache(mCurrentPage, mNextPage); 1340 } else { 1341 // this is when user is actively dragging a particular screen, they might 1342 // swipe it either left or right (but we won't advance by more than one screen) 1343 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 1344 } 1345 } 1346 } 1347 1348 protected void onPageEndMoving() { 1349 super.onPageEndMoving(); 1350 1351 if (isHardwareAccelerated()) { 1352 updateChildrenLayersEnabled(false); 1353 } else { 1354 clearChildrenCache(); 1355 } 1356 1357 if (mDragController.isDragging()) { 1358 if (workspaceInModalState()) { 1359 // If we are in springloaded mode, then force an event to check if the current touch 1360 // is under a new page (to scroll to) 1361 mDragController.forceTouchMove(); 1362 } 1363 } 1364 1365 if (mDelayedResizeRunnable != null && !mIsSwitchingState) { 1366 mDelayedResizeRunnable.run(); 1367 mDelayedResizeRunnable = null; 1368 } 1369 1370 if (mDelayedSnapToPageRunnable != null) { 1371 mDelayedSnapToPageRunnable.run(); 1372 mDelayedSnapToPageRunnable = null; 1373 } 1374 if (mStripScreensOnPageStopMoving) { 1375 stripEmptyScreens(); 1376 mStripScreensOnPageStopMoving = false; 1377 } 1378 } 1379 1380 protected void onScrollInteractionBegin() { 1381 super.onScrollInteractionEnd(); 1382 mScrollInteractionBegan = true; 1383 } 1384 1385 protected void onScrollInteractionEnd() { 1386 super.onScrollInteractionEnd(); 1387 mScrollInteractionBegan = false; 1388 if (mStartedSendingScrollEvents) { 1389 mStartedSendingScrollEvents = false; 1390 mLauncherOverlay.onScrollInteractionEnd(); 1391 } 1392 } 1393 1394 public void setLauncherOverlay(LauncherOverlay overlay) { 1395 mLauncherOverlay = overlay; 1396 // A new overlay has been set. Reset event tracking 1397 mStartedSendingScrollEvents = false; 1398 onOverlayScrollChanged(0); 1399 } 1400 1401 @Override 1402 protected int getUnboundedScrollX() { 1403 if (isScrollingOverlay()) { 1404 return mUnboundedScrollX; 1405 } 1406 1407 return super.getUnboundedScrollX(); 1408 } 1409 1410 private boolean isScrollingOverlay() { 1411 return mLauncherOverlay != null && 1412 ((mIsRtl && mUnboundedScrollX > mMaxScrollX) || (!mIsRtl && mUnboundedScrollX < 0)); 1413 } 1414 1415 @Override 1416 protected void snapToDestination() { 1417 // If we're overscrolling the overlay, we make sure to immediately reset the PagedView 1418 // to it's baseline position instead of letting the overscroll settle. The overlay handles 1419 // it's own settling, and every gesture to the overlay should be self-contained and start 1420 // from 0, so we zero it out here. 1421 if (isScrollingOverlay()) { 1422 int finalScroll = mIsRtl ? mMaxScrollX : 0; 1423 1424 // We reset mWasInOverscroll so that PagedView doesn't zero out the overscroll 1425 // interaction when we call scrollTo. 1426 mWasInOverscroll = false; 1427 scrollTo(finalScroll, getScrollY()); 1428 } else { 1429 super.snapToDestination(); 1430 } 1431 } 1432 1433 @Override 1434 public void scrollTo(int x, int y) { 1435 mUnboundedScrollX = x; 1436 super.scrollTo(x, y); 1437 } 1438 1439 private void onWorkspaceOverallScrollChanged() { 1440 if (!mIgnoreQsbScroll) { 1441 mLauncher.getQsbContainer().setTranslationX( 1442 mOverlayTranslation + mFirstPageScrollX - getScrollX()); 1443 } 1444 } 1445 1446 @Override 1447 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 1448 super.onScrollChanged(l, t, oldl, oldt); 1449 onWorkspaceOverallScrollChanged(); 1450 1451 // Update the page indicator progress. 1452 boolean isTransitioning = mIsSwitchingState 1453 || (getLayoutTransition() != null && getLayoutTransition().isRunning()); 1454 if (!isTransitioning) { 1455 showPageIndicatorAtCurrentScroll(); 1456 } 1457 } 1458 1459 private void showPageIndicatorAtCurrentScroll() { 1460 if (mPageIndicator != null) { 1461 mPageIndicator.setScroll(getScrollX(), computeMaxScrollX()); 1462 } 1463 } 1464 1465 @Override 1466 protected void overScroll(float amount) { 1467 boolean shouldOverScroll = (amount <= 0 && (!hasCustomContent() || mIsRtl)) || 1468 (amount >= 0 && (!hasCustomContent() || !mIsRtl)); 1469 1470 boolean shouldScrollOverlay = mLauncherOverlay != null && 1471 ((amount <= 0 && !mIsRtl) || (amount >= 0 && mIsRtl)); 1472 1473 boolean shouldZeroOverlay = mLauncherOverlay != null && mLastOverlaySroll != 0 && 1474 ((amount >= 0 && !mIsRtl) || (amount <= 0 && mIsRtl)); 1475 1476 if (shouldScrollOverlay) { 1477 if (!mStartedSendingScrollEvents && mScrollInteractionBegan) { 1478 mStartedSendingScrollEvents = true; 1479 mLauncherOverlay.onScrollInteractionBegin(); 1480 } 1481 1482 mLastOverlaySroll = Math.abs(amount / getViewportWidth()); 1483 mLauncherOverlay.onScrollChange(mLastOverlaySroll, mIsRtl); 1484 } else if (shouldOverScroll) { 1485 dampedOverScroll(amount); 1486 } 1487 1488 if (shouldZeroOverlay) { 1489 mLauncherOverlay.onScrollChange(0, mIsRtl); 1490 } 1491 } 1492 1493 private final Interpolator mAlphaInterpolator = new DecelerateInterpolator(3f); 1494 1495 /** 1496 * The overlay scroll is being controlled locally, just update our overlay effect 1497 */ 1498 public void onOverlayScrollChanged(float scroll) { 1499 float offset = 0f; 1500 float slip = 0f; 1501 1502 scroll = Math.max(scroll - offset, 0); 1503 scroll = Math.min(1, scroll / (1 - offset)); 1504 1505 float alpha = 1 - mAlphaInterpolator.getInterpolation(scroll); 1506 float transX = mLauncher.getDragLayer().getMeasuredWidth() * scroll; 1507 transX *= 1 - slip; 1508 1509 if (mIsRtl) { 1510 transX = -transX; 1511 } 1512 mOverlayTranslation = transX; 1513 1514 // TODO(adamcohen): figure out a final effect here. We may need to recommend 1515 // different effects based on device performance. On at least one relatively high-end 1516 // device I've tried, translating the launcher causes things to get quite laggy. 1517 setWorkspaceTranslationAndAlpha(Direction.X, transX, alpha); 1518 setHotseatTranslationAndAlpha(Direction.X, transX, alpha); 1519 onWorkspaceOverallScrollChanged(); 1520 1521 mQsbAlphaController.setAlphaAtIndex(alpha, QSB_ALPHA_INDEX_OVERLAY_SCROLL); 1522 } 1523 1524 /** 1525 * Moves the workspace UI in the Y direction. 1526 * @param translation the amount of shift. 1527 * @param alpha the alpha for the workspace page 1528 */ 1529 public void setWorkspaceYTranslationAndAlpha(float translation, float alpha) { 1530 setWorkspaceTranslationAndAlpha(Direction.Y, translation, alpha); 1531 1532 mLauncher.getQsbContainer().setTranslationY(translation); 1533 mQsbAlphaController.setAlphaAtIndex(alpha, QSB_ALPHA_INDEX_Y_TRANSLATION); 1534 } 1535 1536 /** 1537 * Moves the workspace UI in the provided direction. 1538 * @param direction the direction to move the workspace 1539 * @param translation the amount of shift. 1540 * @param alpha the alpha for the workspace page 1541 */ 1542 private void setWorkspaceTranslationAndAlpha(Direction direction, float translation, float alpha) { 1543 Property<View, Float> property = direction.viewProperty; 1544 mPageAlpha[direction.ordinal()] = alpha; 1545 float finalAlpha = mPageAlpha[0] * mPageAlpha[1]; 1546 1547 View currentChild = getChildAt(getCurrentPage()); 1548 if (currentChild != null) { 1549 property.set(currentChild, translation); 1550 currentChild.setAlpha(finalAlpha); 1551 } 1552 1553 // When the animation finishes, reset all pages, just in case we missed a page. 1554 if (Float.compare(translation, 0) == 0) { 1555 for (int i = getChildCount() - 1; i >= 0; i--) { 1556 View child = getChildAt(i); 1557 property.set(child, translation); 1558 child.setAlpha(finalAlpha); 1559 } 1560 } 1561 } 1562 1563 /** 1564 * Moves the Hotseat UI in the provided direction. 1565 * @param direction the direction to move the workspace 1566 * @param translation the amount of shift. 1567 * @param alpha the alpha for the hotseat page 1568 */ 1569 public void setHotseatTranslationAndAlpha(Direction direction, float translation, float alpha) { 1570 Property<View, Float> property = direction.viewProperty; 1571 // Skip the page indicator movement in the vertical bar layout 1572 if (direction != Direction.Y || !mLauncher.getDeviceProfile().isVerticalBarLayout()) { 1573 property.set(mPageIndicator, translation); 1574 } 1575 property.set(mLauncher.getHotseat(), translation); 1576 setHotseatAlphaAtIndex(alpha, direction.ordinal()); 1577 } 1578 1579 private void setHotseatAlphaAtIndex(float alpha, int index) { 1580 mHotseatAlpha[index] = alpha; 1581 final float hotseatAlpha = mHotseatAlpha[0] * mHotseatAlpha[1] * mHotseatAlpha[2]; 1582 final float pageIndicatorAlpha = mHotseatAlpha[0] * mHotseatAlpha[2]; 1583 1584 mLauncher.getHotseat().setAlpha(hotseatAlpha); 1585 mPageIndicator.setAlpha(pageIndicatorAlpha); 1586 } 1587 1588 public ValueAnimator createHotseatAlphaAnimator(float finalValue) { 1589 if (Float.compare(finalValue, mHotseatAlpha[HOTSEAT_STATE_ALPHA_INDEX]) == 0) { 1590 // Return a dummy animator to avoid null checks. 1591 return ValueAnimator.ofFloat(0, 0); 1592 } else { 1593 ValueAnimator animator = ValueAnimator 1594 .ofFloat(mHotseatAlpha[HOTSEAT_STATE_ALPHA_INDEX], finalValue); 1595 animator.addUpdateListener(new AnimatorUpdateListener() { 1596 @Override 1597 public void onAnimationUpdate(ValueAnimator valueAnimator) { 1598 float value = (Float) valueAnimator.getAnimatedValue(); 1599 setHotseatAlphaAtIndex(value, HOTSEAT_STATE_ALPHA_INDEX); 1600 } 1601 }); 1602 1603 AccessibilityManager am = (AccessibilityManager) 1604 mLauncher.getSystemService(Context.ACCESSIBILITY_SERVICE); 1605 final boolean accessibilityEnabled = am.isEnabled(); 1606 animator.addUpdateListener( 1607 new AlphaUpdateListener(mLauncher.getHotseat(), accessibilityEnabled)); 1608 animator.addUpdateListener( 1609 new AlphaUpdateListener(mPageIndicator, accessibilityEnabled)); 1610 return animator; 1611 } 1612 } 1613 1614 @Override 1615 protected Matrix getPageShiftMatrix() { 1616 if (Float.compare(mOverlayTranslation, 0) != 0) { 1617 // The pages are translated by mOverlayTranslation. incorporate that in the 1618 // visible page calculation by shifting everything back by that same amount. 1619 mTempMatrix.set(getMatrix()); 1620 mTempMatrix.postTranslate(-mOverlayTranslation, 0); 1621 return mTempMatrix; 1622 } 1623 return super.getPageShiftMatrix(); 1624 } 1625 1626 @Override 1627 protected void getEdgeVerticalPostion(int[] pos) { 1628 View child = getChildAt(getPageCount() - 1); 1629 pos[0] = child.getTop(); 1630 pos[1] = child.getBottom(); 1631 } 1632 1633 @Override 1634 protected void notifyPageSwitchListener() { 1635 super.notifyPageSwitchListener(); 1636 1637 if (hasCustomContent() && getNextPage() == 0 && !mCustomContentShowing) { 1638 mCustomContentShowing = true; 1639 if (mCustomContentCallbacks != null) { 1640 mCustomContentCallbacks.onShow(false); 1641 mCustomContentShowTime = System.currentTimeMillis(); 1642 } 1643 } else if (hasCustomContent() && getNextPage() != 0 && mCustomContentShowing) { 1644 mCustomContentShowing = false; 1645 if (mCustomContentCallbacks != null) { 1646 mCustomContentCallbacks.onHide(); 1647 } 1648 } 1649 } 1650 1651 protected CustomContentCallbacks getCustomContentCallbacks() { 1652 return mCustomContentCallbacks; 1653 } 1654 1655 protected void setWallpaperDimension() { 1656 Utilities.THREAD_POOL_EXECUTOR.execute(new Runnable() { 1657 @Override 1658 public void run() { 1659 final Point size = LauncherAppState.getInstance() 1660 .getInvariantDeviceProfile().defaultWallpaperSize; 1661 if (size.x != mWallpaperManager.getDesiredMinimumWidth() 1662 || size.y != mWallpaperManager.getDesiredMinimumHeight()) { 1663 mWallpaperManager.suggestDesiredDimensions(size.x, size.y); 1664 } 1665 } 1666 }); 1667 } 1668 1669 public void lockWallpaperToDefaultPage() { 1670 mWallpaperOffset.setLockToDefaultPage(true); 1671 } 1672 1673 public void unlockWallpaperFromDefaultPageOnNextLayout() { 1674 if (mWallpaperOffset.isLockedToDefaultPage()) { 1675 mUnlockWallpaperFromDefaultPageOnLayout = true; 1676 requestLayout(); 1677 } 1678 } 1679 1680 protected void snapToPage(int whichPage, Runnable r) { 1681 snapToPage(whichPage, SLOW_PAGE_SNAP_ANIMATION_DURATION, r); 1682 } 1683 1684 protected void snapToPage(int whichPage, int duration, Runnable r) { 1685 if (mDelayedSnapToPageRunnable != null) { 1686 mDelayedSnapToPageRunnable.run(); 1687 } 1688 mDelayedSnapToPageRunnable = r; 1689 snapToPage(whichPage, duration); 1690 } 1691 1692 public void snapToScreenId(long screenId) { 1693 snapToScreenId(screenId, null); 1694 } 1695 1696 protected void snapToScreenId(long screenId, Runnable r) { 1697 snapToPage(getPageIndexForScreenId(screenId), r); 1698 } 1699 1700 @Override 1701 public void computeScroll() { 1702 super.computeScroll(); 1703 mWallpaperOffset.syncWithScroll(); 1704 } 1705 1706 public void computeScrollWithoutInvalidation() { 1707 computeScrollHelper(false); 1708 } 1709 1710 @Override 1711 protected void determineScrollingStart(MotionEvent ev, float touchSlopScale) { 1712 if (!isSwitchingState()) { 1713 super.determineScrollingStart(ev, touchSlopScale); 1714 } 1715 } 1716 1717 @Override 1718 public void announceForAccessibility(CharSequence text) { 1719 // Don't announce if apps is on top of us. 1720 if (!mLauncher.isAppsViewVisible()) { 1721 super.announceForAccessibility(text); 1722 } 1723 } 1724 1725 public void showOutlinesTemporarily() { 1726 if (!mIsPageMoving && !isTouchActive()) { 1727 snapToPage(mCurrentPage); 1728 } 1729 } 1730 1731 private void updatePageAlphaValues(int screenCenter) { 1732 if (mWorkspaceFadeInAdjacentScreens && 1733 !workspaceInModalState() && 1734 !mIsSwitchingState) { 1735 for (int i = numCustomPages(); i < getChildCount(); i++) { 1736 CellLayout child = (CellLayout) getChildAt(i); 1737 if (child != null) { 1738 float scrollProgress = getScrollProgress(screenCenter, child, i); 1739 float alpha = 1 - Math.abs(scrollProgress); 1740 child.getShortcutsAndWidgets().setAlpha(alpha); 1741 1742 if (isQsbContainerPage(i)) { 1743 mQsbAlphaController.setAlphaAtIndex(alpha, QSB_ALPHA_INDEX_PAGE_SCROLL); 1744 } 1745 } 1746 } 1747 } 1748 } 1749 1750 public boolean hasCustomContent() { 1751 return (mScreenOrder.size() > 0 && mScreenOrder.get(0) == CUSTOM_CONTENT_SCREEN_ID); 1752 } 1753 1754 public int numCustomPages() { 1755 return hasCustomContent() ? 1 : 0; 1756 } 1757 1758 public boolean isOnOrMovingToCustomContent() { 1759 return hasCustomContent() && getNextPage() == 0 && mRestorePage == INVALID_RESTORE_PAGE; 1760 } 1761 1762 private void updateStateForCustomContent(int screenCenter) { 1763 float translationX = 0; 1764 float progress = 0; 1765 if (hasCustomContent()) { 1766 int index = mScreenOrder.indexOf(CUSTOM_CONTENT_SCREEN_ID); 1767 1768 int scrollDelta = getScrollX() - getScrollForPage(index) - 1769 getLayoutTransitionOffsetForPage(index); 1770 float scrollRange = getScrollForPage(index + 1) - getScrollForPage(index); 1771 translationX = scrollRange - scrollDelta; 1772 progress = (scrollRange - scrollDelta) / scrollRange; 1773 1774 if (mIsRtl) { 1775 translationX = Math.min(0, translationX); 1776 } else { 1777 translationX = Math.max(0, translationX); 1778 } 1779 progress = Math.max(0, progress); 1780 } 1781 1782 if (Float.compare(progress, mLastCustomContentScrollProgress) == 0) return; 1783 1784 CellLayout cc = mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID); 1785 if (progress > 0 && cc.getVisibility() != VISIBLE && !workspaceInModalState()) { 1786 cc.setVisibility(VISIBLE); 1787 } 1788 1789 mLastCustomContentScrollProgress = progress; 1790 1791 // We should only update the drag layer background alpha if we are not in all apps or the 1792 // widgets tray 1793 if (mState == State.NORMAL) { 1794 mLauncher.getDragLayer().setBackgroundAlpha(progress == 1 ? 0 : progress * 0.8f); 1795 } 1796 1797 if (mLauncher.getHotseat() != null) { 1798 mLauncher.getHotseat().setTranslationX(translationX); 1799 } 1800 1801 if (mPageIndicator != null) { 1802 mPageIndicator.setTranslationX(translationX); 1803 } 1804 1805 if (mCustomContentCallbacks != null) { 1806 mCustomContentCallbacks.onScrollProgressChanged(progress); 1807 } 1808 } 1809 1810 @Override 1811 protected void screenScrolled(int screenCenter) { 1812 updatePageAlphaValues(screenCenter); 1813 updateStateForCustomContent(screenCenter); 1814 enableHwLayersOnVisiblePages(); 1815 } 1816 1817 protected void onAttachedToWindow() { 1818 super.onAttachedToWindow(); 1819 IBinder windowToken = getWindowToken(); 1820 mWallpaperOffset.setWindowToken(windowToken); 1821 computeScroll(); 1822 mDragController.setWindowToken(windowToken); 1823 } 1824 1825 protected void onDetachedFromWindow() { 1826 super.onDetachedFromWindow(); 1827 mWallpaperOffset.setWindowToken(null); 1828 } 1829 1830 protected void onResume() { 1831 // Update wallpaper dimensions if they were changed since last onResume 1832 // (we also always set the wallpaper dimensions in the constructor) 1833 if (LauncherAppState.getInstance().hasWallpaperChangedSinceLastCheck()) { 1834 setWallpaperDimension(); 1835 } 1836 mWallpaperOffset.onResume(); 1837 } 1838 1839 @Override 1840 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1841 if (mUnlockWallpaperFromDefaultPageOnLayout) { 1842 mWallpaperOffset.setLockToDefaultPage(false); 1843 mUnlockWallpaperFromDefaultPageOnLayout = false; 1844 } 1845 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1846 mWallpaperOffset.syncWithScroll(); 1847 mWallpaperOffset.jumpToFinal(); 1848 } 1849 super.onLayout(changed, left, top, right, bottom); 1850 mFirstPageScrollX = getScrollForPage(0); 1851 onWorkspaceOverallScrollChanged(); 1852 1853 final LayoutTransition transition = getLayoutTransition(); 1854 // If the transition is running defer updating max scroll, as some empty pages could 1855 // still be present, and a max scroll change could cause sudden jumps in scroll. 1856 if (transition != null && transition.isRunning()) { 1857 transition.addTransitionListener(new LayoutTransition.TransitionListener() { 1858 1859 @Override 1860 public void startTransition(LayoutTransition transition, ViewGroup container, 1861 View view, int transitionType) { 1862 mIgnoreQsbScroll = true; 1863 } 1864 1865 @Override 1866 public void endTransition(LayoutTransition transition, ViewGroup container, 1867 View view, int transitionType) { 1868 // Wait until all transitions are complete. 1869 if (!transition.isRunning()) { 1870 mIgnoreQsbScroll = false; 1871 transition.removeTransitionListener(this); 1872 mFirstPageScrollX = getScrollForPage(0); 1873 onWorkspaceOverallScrollChanged(); 1874 } 1875 } 1876 }); 1877 } 1878 1879 } 1880 1881 @Override 1882 public int getDescendantFocusability() { 1883 if (workspaceInModalState()) { 1884 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1885 } 1886 return super.getDescendantFocusability(); 1887 } 1888 1889 public boolean workspaceInModalState() { 1890 return mState != State.NORMAL; 1891 } 1892 1893 void enableChildrenCache(int fromPage, int toPage) { 1894 if (fromPage > toPage) { 1895 final int temp = fromPage; 1896 fromPage = toPage; 1897 toPage = temp; 1898 } 1899 1900 final int screenCount = getChildCount(); 1901 1902 fromPage = Math.max(fromPage, 0); 1903 toPage = Math.min(toPage, screenCount - 1); 1904 1905 for (int i = fromPage; i <= toPage; i++) { 1906 final CellLayout layout = (CellLayout) getChildAt(i); 1907 layout.setChildrenDrawnWithCacheEnabled(true); 1908 layout.setChildrenDrawingCacheEnabled(true); 1909 } 1910 } 1911 1912 void clearChildrenCache() { 1913 final int screenCount = getChildCount(); 1914 for (int i = 0; i < screenCount; i++) { 1915 final CellLayout layout = (CellLayout) getChildAt(i); 1916 layout.setChildrenDrawnWithCacheEnabled(false); 1917 // In software mode, we don't want the items to continue to be drawn into bitmaps 1918 if (!isHardwareAccelerated()) { 1919 layout.setChildrenDrawingCacheEnabled(false); 1920 } 1921 } 1922 } 1923 1924 @Thunk void updateChildrenLayersEnabled(boolean force) { 1925 boolean small = mState == State.OVERVIEW || mIsSwitchingState; 1926 boolean enableChildrenLayers = force || small || mAnimatingViewIntoPlace || isPageMoving(); 1927 1928 if (enableChildrenLayers != mChildrenLayersEnabled) { 1929 mChildrenLayersEnabled = enableChildrenLayers; 1930 if (mChildrenLayersEnabled) { 1931 enableHwLayersOnVisiblePages(); 1932 } else { 1933 for (int i = 0; i < getPageCount(); i++) { 1934 final CellLayout cl = (CellLayout) getChildAt(i); 1935 cl.enableHardwareLayer(false); 1936 } 1937 } 1938 } 1939 } 1940 1941 private void enableHwLayersOnVisiblePages() { 1942 if (mChildrenLayersEnabled) { 1943 final int screenCount = getChildCount(); 1944 getVisiblePages(mTempVisiblePagesRange); 1945 int leftScreen = mTempVisiblePagesRange[0]; 1946 int rightScreen = mTempVisiblePagesRange[1]; 1947 if (leftScreen == rightScreen) { 1948 // make sure we're caching at least two pages always 1949 if (rightScreen < screenCount - 1) { 1950 rightScreen++; 1951 } else if (leftScreen > 0) { 1952 leftScreen--; 1953 } 1954 } 1955 1956 final CellLayout customScreen = mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID); 1957 for (int i = 0; i < screenCount; i++) { 1958 final CellLayout layout = (CellLayout) getPageAt(i); 1959 1960 // enable layers between left and right screen inclusive, except for the 1961 // customScreen, which may animate its content during transitions. 1962 boolean enableLayer = layout != customScreen && 1963 leftScreen <= i && i <= rightScreen && shouldDrawChild(layout); 1964 layout.enableHardwareLayer(enableLayer); 1965 } 1966 } 1967 } 1968 1969 public void buildPageHardwareLayers() { 1970 // force layers to be enabled just for the call to buildLayer 1971 updateChildrenLayersEnabled(true); 1972 if (getWindowToken() != null) { 1973 final int childCount = getChildCount(); 1974 for (int i = 0; i < childCount; i++) { 1975 CellLayout cl = (CellLayout) getChildAt(i); 1976 cl.buildHardwareLayer(); 1977 } 1978 } 1979 updateChildrenLayersEnabled(false); 1980 } 1981 1982 @Override 1983 protected void getVisiblePages(int[] range) { 1984 super.getVisiblePages(range); 1985 if (mForceDrawAdjacentPages) { 1986 // In overview mode, make sure that the two side pages are visible. 1987 range[0] = Utilities.boundToRange(getCurrentPage() - 1, numCustomPages(), range[1]); 1988 range[1] = Utilities.boundToRange(getCurrentPage() + 1, range[0], getPageCount() - 1); 1989 } 1990 } 1991 1992 protected void onWallpaperTap(MotionEvent ev) { 1993 final int[] position = mTempXY; 1994 getLocationOnScreen(position); 1995 1996 int pointerIndex = ev.getActionIndex(); 1997 position[0] += (int) ev.getX(pointerIndex); 1998 position[1] += (int) ev.getY(pointerIndex); 1999 2000 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 2001 ev.getAction() == MotionEvent.ACTION_UP 2002 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 2003 position[0], position[1], 0, null); 2004 } 2005 2006 public void prepareDragWithProvider(DragPreviewProvider outlineProvider) { 2007 mOutlineProvider = outlineProvider; 2008 } 2009 2010 public void exitWidgetResizeMode() { 2011 DragLayer dragLayer = mLauncher.getDragLayer(); 2012 dragLayer.clearAllResizeFrames(); 2013 } 2014 2015 @Override 2016 protected void getFreeScrollPageRange(int[] range) { 2017 getOverviewModePages(range); 2018 } 2019 2020 private void getOverviewModePages(int[] range) { 2021 int start = numCustomPages(); 2022 int end = getChildCount() - 1; 2023 2024 range[0] = Math.max(0, Math.min(start, getChildCount() - 1)); 2025 range[1] = Math.max(0, end); 2026 } 2027 2028 public void onStartReordering() { 2029 super.onStartReordering(); 2030 // Reordering handles its own animations, disable the automatic ones. 2031 disableLayoutTransitions(); 2032 } 2033 2034 public void onEndReordering() { 2035 super.onEndReordering(); 2036 2037 if (mLauncher.isWorkspaceLoading()) { 2038 // Invalid and dangerous operation if workspace is loading 2039 return; 2040 } 2041 2042 mScreenOrder.clear(); 2043 int count = getChildCount(); 2044 for (int i = 0; i < count; i++) { 2045 CellLayout cl = ((CellLayout) getChildAt(i)); 2046 mScreenOrder.add(getIdForScreen(cl)); 2047 } 2048 2049 mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); 2050 2051 // Re-enable auto layout transitions for page deletion. 2052 enableLayoutTransitions(); 2053 } 2054 2055 public boolean isInOverviewMode() { 2056 return mState == State.OVERVIEW; 2057 } 2058 2059 public void snapToPageFromOverView(int whichPage) { 2060 mStateTransitionAnimation.snapToPageFromOverView(whichPage); 2061 } 2062 2063 int getOverviewModeTranslationY() { 2064 DeviceProfile grid = mLauncher.getDeviceProfile(); 2065 int overviewButtonBarHeight = grid.getOverviewModeButtonBarHeight(); 2066 2067 int scaledHeight = (int) (mOverviewModeShrinkFactor * getNormalChildHeight()); 2068 Rect workspacePadding = grid.getWorkspacePadding(sTempRect); 2069 int workspaceTop = mInsets.top + workspacePadding.top; 2070 int workspaceBottom = getViewportHeight() - mInsets.bottom - workspacePadding.bottom; 2071 int overviewTop = mInsets.top; 2072 int overviewBottom = getViewportHeight() - mInsets.bottom - overviewButtonBarHeight; 2073 int workspaceOffsetTopEdge = workspaceTop + ((workspaceBottom - workspaceTop) - scaledHeight) / 2; 2074 int overviewOffsetTopEdge = overviewTop + (overviewBottom - overviewTop - scaledHeight) / 2; 2075 return -workspaceOffsetTopEdge + overviewOffsetTopEdge; 2076 } 2077 2078 float getSpringLoadedTranslationY() { 2079 DeviceProfile grid = mLauncher.getDeviceProfile(); 2080 if (grid.isVerticalBarLayout() || getChildCount() == 0) { 2081 return 0; 2082 } 2083 2084 float scaledHeight = grid.workspaceSpringLoadShrinkFactor * getNormalChildHeight(); 2085 float shrunkTop = mInsets.top + grid.dropTargetBarSizePx; 2086 float shrunkBottom = getViewportHeight() - mInsets.bottom 2087 - grid.getWorkspacePadding(sTempRect).bottom 2088 - grid.workspaceSpringLoadedBottomSpace; 2089 float totalShrunkSpace = shrunkBottom - shrunkTop; 2090 2091 float desiredCellTop = shrunkTop + (totalShrunkSpace - scaledHeight) / 2; 2092 2093 float halfHeight = getHeight() / 2; 2094 float myCenter = getTop() + halfHeight; 2095 float cellTopFromCenter = halfHeight - getChildAt(0).getTop(); 2096 float actualCellTop = myCenter - cellTopFromCenter * grid.workspaceSpringLoadShrinkFactor; 2097 return (desiredCellTop - actualCellTop) / grid.workspaceSpringLoadShrinkFactor; 2098 } 2099 2100 float getOverviewModeShrinkFactor() { 2101 return mOverviewModeShrinkFactor; 2102 } 2103 2104 /** 2105 * Sets the current workspace {@link State}, returning an animation transitioning the workspace 2106 * to that new state. 2107 */ 2108 public Animator setStateWithAnimation(State toState, boolean animated, 2109 HashMap<View, Integer> layerViews) { 2110 // Create the animation to the new state 2111 AnimatorSet workspaceAnim = mStateTransitionAnimation.getAnimationToState(mState, 2112 toState, animated, layerViews); 2113 2114 boolean shouldNotifyWidgetChange = !mState.shouldUpdateWidget 2115 && toState.shouldUpdateWidget; 2116 // Update the current state 2117 mState = toState; 2118 updateAccessibilityFlags(); 2119 2120 if (shouldNotifyWidgetChange) { 2121 mLauncher.notifyWidgetProvidersChanged(); 2122 } 2123 2124 if (mOnStateChangeListener != null) { 2125 mOnStateChangeListener.prepareStateChange(toState, animated ? workspaceAnim : null); 2126 } 2127 2128 return workspaceAnim; 2129 } 2130 2131 public State getState() { 2132 return mState; 2133 } 2134 2135 public void updateAccessibilityFlags() { 2136 // TODO: Update the accessibility flags appropriately when dragging. 2137 if (!mLauncher.getAccessibilityDelegate().isInAccessibleDrag()) { 2138 if (Utilities.ATLEAST_LOLLIPOP) { 2139 int total = getPageCount(); 2140 for (int i = numCustomPages(); i < total; i++) { 2141 updateAccessibilityFlags((CellLayout) getPageAt(i), i); 2142 } 2143 setImportantForAccessibility((mState == State.NORMAL || mState == State.OVERVIEW) 2144 ? IMPORTANT_FOR_ACCESSIBILITY_AUTO 2145 : IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS); 2146 } else { 2147 int accessible = mState == State.NORMAL ? 2148 IMPORTANT_FOR_ACCESSIBILITY_AUTO : 2149 IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS; 2150 setImportantForAccessibility(accessible); 2151 } 2152 } 2153 } 2154 2155 private void updateAccessibilityFlags(CellLayout page, int pageNo) { 2156 if (mState == State.OVERVIEW) { 2157 page.setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_YES); 2158 page.getShortcutsAndWidgets().setImportantForAccessibility( 2159 IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS); 2160 page.setContentDescription(getPageDescription(pageNo)); 2161 2162 // No custom action for the first page. 2163 if (!FeatureFlags.QSB_ON_FIRST_SCREEN || pageNo > 0) { 2164 if (mPagesAccessibilityDelegate == null) { 2165 mPagesAccessibilityDelegate = new OverviewScreenAccessibilityDelegate(this); 2166 } 2167 page.setAccessibilityDelegate(mPagesAccessibilityDelegate); 2168 } 2169 } else { 2170 int accessible = mState == State.NORMAL ? 2171 IMPORTANT_FOR_ACCESSIBILITY_AUTO : 2172 IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS; 2173 page.setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_NO); 2174 page.getShortcutsAndWidgets().setImportantForAccessibility(accessible); 2175 page.setContentDescription(null); 2176 page.setAccessibilityDelegate(null); 2177 } 2178 } 2179 2180 @Override 2181 public void onLauncherTransitionPrepare(Launcher l, boolean animated, 2182 boolean multiplePagesVisible) { 2183 mIsSwitchingState = true; 2184 mTransitionProgress = 0; 2185 2186 if (multiplePagesVisible) { 2187 mForceDrawAdjacentPages = true; 2188 } 2189 invalidate(); // This will call dispatchDraw(), which calls getVisiblePages(). 2190 2191 updateChildrenLayersEnabled(false); 2192 hideCustomContentIfNecessary(); 2193 } 2194 2195 @Override 2196 public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) { 2197 if (mPageIndicator != null) { 2198 boolean isNewStateSpringLoaded = mState == State.SPRING_LOADED; 2199 mPageIndicator.setShouldAutoHide(!isNewStateSpringLoaded); 2200 if (isNewStateSpringLoaded) { 2201 // Show the page indicator at the same time as the rest of the transition. 2202 showPageIndicatorAtCurrentScroll(); 2203 } 2204 } 2205 } 2206 2207 @Override 2208 public void onLauncherTransitionStep(Launcher l, float t) { 2209 mTransitionProgress = t; 2210 } 2211 2212 @Override 2213 public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) { 2214 mIsSwitchingState = false; 2215 updateChildrenLayersEnabled(false); 2216 showCustomContentIfNecessary(); 2217 mForceDrawAdjacentPages = false; 2218 if (mState == State.SPRING_LOADED) { 2219 showPageIndicatorAtCurrentScroll(); 2220 } 2221 } 2222 2223 void updateCustomContentVisibility() { 2224 int visibility = mState == Workspace.State.NORMAL ? VISIBLE : INVISIBLE; 2225 setCustomContentVisibility(visibility); 2226 } 2227 2228 void setCustomContentVisibility(int visibility) { 2229 if (hasCustomContent()) { 2230 mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID).setVisibility(visibility); 2231 } 2232 } 2233 2234 void showCustomContentIfNecessary() { 2235 boolean show = mState == Workspace.State.NORMAL; 2236 if (show && hasCustomContent()) { 2237 mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID).setVisibility(VISIBLE); 2238 } 2239 } 2240 2241 void hideCustomContentIfNecessary() { 2242 boolean hide = mState != Workspace.State.NORMAL; 2243 if (hide && hasCustomContent()) { 2244 disableLayoutTransitions(); 2245 mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID).setVisibility(INVISIBLE); 2246 enableLayoutTransitions(); 2247 } 2248 } 2249 2250 /** 2251 * Returns the drawable for the given text view. 2252 */ 2253 public static Drawable getTextViewIcon(TextView tv) { 2254 final Drawable[] drawables = tv.getCompoundDrawables(); 2255 for (int i = 0; i < drawables.length; i++) { 2256 if (drawables[i] != null) { 2257 return drawables[i]; 2258 } 2259 } 2260 return null; 2261 } 2262 2263 public void startDrag(CellLayout.CellInfo cellInfo, DragOptions options) { 2264 View child = cellInfo.cell; 2265 2266 // Make sure the drag was started by a long press as opposed to a long click. 2267 if (!child.isInTouchMode()) { 2268 return; 2269 } 2270 2271 mDragInfo = cellInfo; 2272 child.setVisibility(INVISIBLE); 2273 CellLayout layout = (CellLayout) child.getParent().getParent(); 2274 layout.prepareChildForDrag(child); 2275 2276 if (options.isAccessibleDrag) { 2277 mDragController.addDragListener(new AccessibileDragListenerAdapter( 2278 this, CellLayout.WORKSPACE_ACCESSIBILITY_DRAG) { 2279 @Override 2280 protected void enableAccessibleDrag(boolean enable) { 2281 super.enableAccessibleDrag(enable); 2282 setEnableForLayout(mLauncher.getHotseat().getLayout(),enable); 2283 2284 // We need to allow our individual children to become click handlers in this 2285 // case, so temporarily unset the click handlers. 2286 setOnClickListener(enable ? null : mLauncher); 2287 } 2288 }); 2289 } 2290 2291 beginDragShared(child, this, options); 2292 } 2293 2294 public void beginDragShared(View child, DragSource source, DragOptions options) { 2295 Object dragObject = child.getTag(); 2296 if (!(dragObject instanceof ItemInfo)) { 2297 String msg = "Drag started with a view that has no tag set. This " 2298 + "will cause a crash (issue 11627249) down the line. " 2299 + "View: " + child + " tag: " + child.getTag(); 2300 throw new IllegalStateException(msg); 2301 } 2302 beginDragShared(child, source, (ItemInfo) dragObject, 2303 new DragPreviewProvider(child), options); 2304 } 2305 2306 2307 public DragView beginDragShared(View child, DragSource source, ItemInfo dragObject, 2308 DragPreviewProvider previewProvider, DragOptions dragOptions) { 2309 child.clearFocus(); 2310 child.setPressed(false); 2311 mOutlineProvider = previewProvider; 2312 2313 // The drag bitmap follows the touch point around on the screen 2314 final Bitmap b = previewProvider.createDragBitmap(mCanvas); 2315 int halfPadding = previewProvider.previewPadding / 2; 2316 2317 float scale = previewProvider.getScaleAndPosition(b, mTempXY); 2318 int dragLayerX = mTempXY[0]; 2319 int dragLayerY = mTempXY[1]; 2320 2321 DeviceProfile grid = mLauncher.getDeviceProfile(); 2322 Point dragVisualizeOffset = null; 2323 Rect dragRect = null; 2324 if (child instanceof BubbleTextView) { 2325 int iconSize = grid.iconSizePx; 2326 int top = child.getPaddingTop(); 2327 int left = (b.getWidth() - iconSize) / 2; 2328 int right = left + iconSize; 2329 int bottom = top + iconSize; 2330 dragLayerY += top; 2331 // Note: The drag region is used to calculate drag layer offsets, but the 2332 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 2333 dragVisualizeOffset = new Point(- halfPadding, halfPadding); 2334 dragRect = new Rect(left, top, right, bottom); 2335 } else if (child instanceof FolderIcon) { 2336 int previewSize = grid.folderIconSizePx; 2337 dragVisualizeOffset = new Point(- halfPadding, halfPadding - child.getPaddingTop()); 2338 dragRect = new Rect(0, child.getPaddingTop(), child.getWidth(), previewSize); 2339 } 2340 2341 // Clear the pressed state if necessary 2342 if (child instanceof BubbleTextView) { 2343 BubbleTextView icon = (BubbleTextView) child; 2344 icon.clearPressedBackground(); 2345 } 2346 2347 if (child.getParent() instanceof ShortcutAndWidgetContainer) { 2348 mDragSourceInternal = (ShortcutAndWidgetContainer) child.getParent(); 2349 } 2350 2351 DragView dv = mDragController.startDrag(b, dragLayerX, dragLayerY, source, 2352 dragObject, dragVisualizeOffset, dragRect, scale, dragOptions); 2353 dv.setIntrinsicIconScaleFactor(source.getIntrinsicIconScaleFactor()); 2354 b.recycle(); 2355 return dv; 2356 } 2357 2358 public boolean transitionStateShouldAllowDrop() { 2359 return ((!isSwitchingState() || mTransitionProgress > 0.5f) && 2360 (mState == State.NORMAL || mState == State.SPRING_LOADED)); 2361 } 2362 2363 /** 2364 * {@inheritDoc} 2365 */ 2366 public boolean acceptDrop(DragObject d) { 2367 // If it's an external drop (e.g. from All Apps), check if it should be accepted 2368 CellLayout dropTargetLayout = mDropToLayout; 2369 if (d.dragSource != this) { 2370 // Don't accept the drop if we're not over a screen at time of drop 2371 if (dropTargetLayout == null) { 2372 return false; 2373 } 2374 if (!transitionStateShouldAllowDrop()) return false; 2375 2376 mDragViewVisualCenter = d.getVisualCenter(mDragViewVisualCenter); 2377 2378 // We want the point to be mapped to the dragTarget. 2379 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 2380 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2381 } else { 2382 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter); 2383 } 2384 2385 int spanX = 1; 2386 int spanY = 1; 2387 if (mDragInfo != null) { 2388 final CellLayout.CellInfo dragCellInfo = mDragInfo; 2389 spanX = dragCellInfo.spanX; 2390 spanY = dragCellInfo.spanY; 2391 } else { 2392 spanX = d.dragInfo.spanX; 2393 spanY = d.dragInfo.spanY; 2394 } 2395 2396 int minSpanX = spanX; 2397 int minSpanY = spanY; 2398 if (d.dragInfo instanceof PendingAddWidgetInfo) { 2399 minSpanX = ((PendingAddWidgetInfo) d.dragInfo).minSpanX; 2400 minSpanY = ((PendingAddWidgetInfo) d.dragInfo).minSpanY; 2401 } 2402 2403 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2404 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, dropTargetLayout, 2405 mTargetCell); 2406 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2407 mDragViewVisualCenter[1], mTargetCell); 2408 if (mCreateUserFolderOnDrop && willCreateUserFolder(d.dragInfo, 2409 dropTargetLayout, mTargetCell, distance, true)) { 2410 return true; 2411 } 2412 2413 if (mAddToExistingFolderOnDrop && willAddToExistingUserFolder(d.dragInfo, 2414 dropTargetLayout, mTargetCell, distance)) { 2415 return true; 2416 } 2417 2418 int[] resultSpan = new int[2]; 2419 mTargetCell = dropTargetLayout.performReorder((int) mDragViewVisualCenter[0], 2420 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2421 null, mTargetCell, resultSpan, CellLayout.MODE_ACCEPT_DROP); 2422 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2423 2424 // Don't accept the drop if there's no room for the item 2425 if (!foundCell) { 2426 // Don't show the message if we are dropping on the AllApps button and the hotseat 2427 // is full 2428 boolean isHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2429 if (mTargetCell != null && isHotseat && !FeatureFlags.NO_ALL_APPS_ICON) { 2430 Hotseat hotseat = mLauncher.getHotseat(); 2431 if (mLauncher.getDeviceProfile().inv.isAllAppsButtonRank( 2432 hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { 2433 return false; 2434 } 2435 } 2436 2437 mLauncher.showOutOfSpaceMessage(isHotseat); 2438 return false; 2439 } 2440 } 2441 2442 long screenId = getIdForScreen(dropTargetLayout); 2443 if (screenId == EXTRA_EMPTY_SCREEN_ID) { 2444 commitExtraEmptyScreen(); 2445 } 2446 2447 return true; 2448 } 2449 2450 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, 2451 float distance, boolean considerTimeout) { 2452 if (distance > mMaxDistanceForFolderCreation) return false; 2453 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2454 return willCreateUserFolder(info, dropOverView, considerTimeout); 2455 } 2456 2457 boolean willCreateUserFolder(ItemInfo info, View dropOverView, boolean considerTimeout) { 2458 if (dropOverView != null) { 2459 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2460 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.cellY)) { 2461 return false; 2462 } 2463 } 2464 2465 boolean hasntMoved = false; 2466 if (mDragInfo != null) { 2467 hasntMoved = dropOverView == mDragInfo.cell; 2468 } 2469 2470 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2471 return false; 2472 } 2473 2474 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2475 boolean willBecomeShortcut = 2476 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2477 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT || 2478 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_DEEP_SHORTCUT); 2479 2480 return (aboveShortcut && willBecomeShortcut); 2481 } 2482 2483 boolean willAddToExistingUserFolder(ItemInfo dragInfo, CellLayout target, int[] targetCell, 2484 float distance) { 2485 if (distance > mMaxDistanceForFolderCreation) return false; 2486 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2487 return willAddToExistingUserFolder(dragInfo, dropOverView); 2488 2489 } 2490 boolean willAddToExistingUserFolder(ItemInfo dragInfo, View dropOverView) { 2491 if (dropOverView != null) { 2492 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2493 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.cellY)) { 2494 return false; 2495 } 2496 } 2497 2498 if (dropOverView instanceof FolderIcon) { 2499 FolderIcon fi = (FolderIcon) dropOverView; 2500 if (fi.acceptDrop(dragInfo)) { 2501 return true; 2502 } 2503 } 2504 return false; 2505 } 2506 2507 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2508 int[] targetCell, float distance, boolean external, DragView dragView, 2509 Runnable postAnimationRunnable) { 2510 if (distance > mMaxDistanceForFolderCreation) return false; 2511 View v = target.getChildAt(targetCell[0], targetCell[1]); 2512 2513 boolean hasntMoved = false; 2514 if (mDragInfo != null) { 2515 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2516 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2517 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2518 } 2519 2520 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2521 mCreateUserFolderOnDrop = false; 2522 final long screenId = getIdForScreen(target); 2523 2524 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2525 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2526 2527 if (aboveShortcut && willBecomeShortcut) { 2528 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2529 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2530 // if the drag started here, we need to remove it from the workspace 2531 if (!external) { 2532 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2533 } 2534 2535 Rect folderLocation = new Rect(); 2536 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2537 target.removeView(v); 2538 2539 FolderIcon fi = 2540 mLauncher.addFolder(target, container, screenId, targetCell[0], targetCell[1]); 2541 destInfo.cellX = -1; 2542 destInfo.cellY = -1; 2543 sourceInfo.cellX = -1; 2544 sourceInfo.cellY = -1; 2545 2546 // If the dragView is null, we can't animate 2547 boolean animate = dragView != null; 2548 if (animate) { 2549 // In order to keep everything continuous, we hand off the currently rendered 2550 // folder background to the newly created icon. This preserves animation state. 2551 fi.setFolderBackground(mFolderCreateBg); 2552 mFolderCreateBg = new FolderIcon.PreviewBackground(); 2553 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2554 postAnimationRunnable); 2555 } else { 2556 fi.prepareCreate(v); 2557 fi.addItem(destInfo); 2558 fi.addItem(sourceInfo); 2559 } 2560 return true; 2561 } 2562 return false; 2563 } 2564 2565 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2566 float distance, DragObject d, boolean external) { 2567 if (distance > mMaxDistanceForFolderCreation) return false; 2568 2569 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2570 if (!mAddToExistingFolderOnDrop) return false; 2571 mAddToExistingFolderOnDrop = false; 2572 2573 if (dropOverView instanceof FolderIcon) { 2574 FolderIcon fi = (FolderIcon) dropOverView; 2575 if (fi.acceptDrop(d.dragInfo)) { 2576 fi.onDrop(d); 2577 2578 // if the drag started here, we need to remove it from the workspace 2579 if (!external) { 2580 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2581 } 2582 return true; 2583 } 2584 } 2585 return false; 2586 } 2587 2588 @Override 2589 public void prepareAccessibilityDrop() { } 2590 2591 public void onDrop(final DragObject d) { 2592 mDragViewVisualCenter = d.getVisualCenter(mDragViewVisualCenter); 2593 CellLayout dropTargetLayout = mDropToLayout; 2594 2595 // We want the point to be mapped to the dragTarget. 2596 if (dropTargetLayout != null) { 2597 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 2598 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2599 } else { 2600 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter); 2601 } 2602 } 2603 2604 int snapScreen = -1; 2605 boolean resizeOnDrop = false; 2606 if (d.dragSource != this) { 2607 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2608 (int) mDragViewVisualCenter[1] }; 2609 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2610 } else if (mDragInfo != null) { 2611 final View cell = mDragInfo.cell; 2612 2613 if (dropTargetLayout != null && !d.cancelled) { 2614 // Move internally 2615 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2616 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2617 long container = hasMovedIntoHotseat ? 2618 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2619 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2620 long screenId = (mTargetCell[0] < 0) ? 2621 mDragInfo.screenId : getIdForScreen(dropTargetLayout); 2622 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2623 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2624 // First we find the cell nearest to point at which the item is 2625 // dropped, without any consideration to whether there is an item there. 2626 2627 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2628 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2629 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2630 mDragViewVisualCenter[1], mTargetCell); 2631 2632 // If the item being dropped is a shortcut and the nearest drop 2633 // cell also contains a shortcut, then create a folder with the two shortcuts. 2634 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2635 dropTargetLayout, mTargetCell, distance, false, d.dragView, null)) { 2636 return; 2637 } 2638 2639 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, 2640 distance, d, false)) { 2641 return; 2642 } 2643 2644 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2645 // we need to find the nearest cell location that is vacant 2646 ItemInfo item = d.dragInfo; 2647 int minSpanX = item.spanX; 2648 int minSpanY = item.spanY; 2649 if (item.minSpanX > 0 && item.minSpanY > 0) { 2650 minSpanX = item.minSpanX; 2651 minSpanY = item.minSpanY; 2652 } 2653 2654 int[] resultSpan = new int[2]; 2655 mTargetCell = dropTargetLayout.performReorder((int) mDragViewVisualCenter[0], 2656 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, cell, 2657 mTargetCell, resultSpan, CellLayout.MODE_ON_DROP); 2658 2659 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2660 2661 // if the widget resizes on drop 2662 if (foundCell && (cell instanceof AppWidgetHostView) && 2663 (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY)) { 2664 resizeOnDrop = true; 2665 item.spanX = resultSpan[0]; 2666 item.spanY = resultSpan[1]; 2667 AppWidgetHostView awhv = (AppWidgetHostView) cell; 2668 AppWidgetResizeFrame.updateWidgetSizeRanges(awhv, mLauncher, resultSpan[0], 2669 resultSpan[1]); 2670 } 2671 2672 if (getScreenIdForPageIndex(mCurrentPage) != screenId && !hasMovedIntoHotseat) { 2673 snapScreen = getPageIndexForScreenId(screenId); 2674 snapToPage(snapScreen); 2675 } 2676 2677 if (foundCell) { 2678 final ItemInfo info = (ItemInfo) cell.getTag(); 2679 if (hasMovedLayouts) { 2680 // Reparent the view 2681 CellLayout parentCell = getParentCellLayoutForView(cell); 2682 if (parentCell != null) { 2683 parentCell.removeView(cell); 2684 } else if (ProviderConfig.IS_DOGFOOD_BUILD) { 2685 throw new NullPointerException("mDragInfo.cell has null parent"); 2686 } 2687 addInScreen(cell, container, screenId, mTargetCell[0], mTargetCell[1], 2688 info.spanX, info.spanY); 2689 } 2690 2691 // update the item's position after drop 2692 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2693 lp.cellX = lp.tmpCellX = mTargetCell[0]; 2694 lp.cellY = lp.tmpCellY = mTargetCell[1]; 2695 lp.cellHSpan = item.spanX; 2696 lp.cellVSpan = item.spanY; 2697 lp.isLockedToGrid = true; 2698 2699 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2700 cell instanceof LauncherAppWidgetHostView) { 2701 final CellLayout cellLayout = dropTargetLayout; 2702 // We post this call so that the widget has a chance to be placed 2703 // in its final location 2704 2705 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2706 AppWidgetProviderInfo pInfo = hostView.getAppWidgetInfo(); 2707 if (pInfo != null && pInfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE 2708 && !d.accessibleDrag) { 2709 mDelayedResizeRunnable = new Runnable() { 2710 public void run() { 2711 if (!isPageMoving() && !mIsSwitchingState) { 2712 DragLayer dragLayer = mLauncher.getDragLayer(); 2713 dragLayer.addResizeFrame(info, hostView, cellLayout); 2714 } 2715 } 2716 }; 2717 } 2718 } 2719 2720 LauncherModel.modifyItemInDatabase(mLauncher, info, container, screenId, lp.cellX, 2721 lp.cellY, item.spanX, item.spanY); 2722 } else { 2723 // If we can't find a drop location, we return the item to its original position 2724 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2725 mTargetCell[0] = lp.cellX; 2726 mTargetCell[1] = lp.cellY; 2727 CellLayout layout = (CellLayout) cell.getParent().getParent(); 2728 layout.markCellsAsOccupiedForView(cell); 2729 } 2730 } 2731 2732 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2733 // Prepare it to be animated into its new position 2734 // This must be called after the view has been re-parented 2735 final Runnable onCompleteRunnable = new Runnable() { 2736 @Override 2737 public void run() { 2738 mAnimatingViewIntoPlace = false; 2739 updateChildrenLayersEnabled(false); 2740 } 2741 }; 2742 mAnimatingViewIntoPlace = true; 2743 if (d.dragView.hasDrawn()) { 2744 final ItemInfo info = (ItemInfo) cell.getTag(); 2745 boolean isWidget = info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET 2746 || info.itemType == LauncherSettings.Favorites.ITEM_TYPE_CUSTOM_APPWIDGET; 2747 if (isWidget) { 2748 int animationType = resizeOnDrop ? ANIMATE_INTO_POSITION_AND_RESIZE : 2749 ANIMATE_INTO_POSITION_AND_DISAPPEAR; 2750 animateWidgetDrop(info, parent, d.dragView, 2751 onCompleteRunnable, animationType, cell, false); 2752 } else { 2753 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2754 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2755 onCompleteRunnable, this); 2756 } 2757 } else { 2758 d.deferDragViewCleanupPostAnimation = false; 2759 cell.setVisibility(VISIBLE); 2760 } 2761 parent.onDropChild(cell); 2762 } 2763 if (d.stateAnnouncer != null) { 2764 d.stateAnnouncer.completeAction(R.string.item_moved); 2765 } 2766 } 2767 2768 /** 2769 * Computes the area relative to dragLayer which is used to display a page. 2770 */ 2771 public void getPageAreaRelativeToDragLayer(Rect outArea) { 2772 CellLayout child = (CellLayout) getChildAt(getNextPage()); 2773 if (child == null) { 2774 return; 2775 } 2776 ShortcutAndWidgetContainer boundingLayout = child.getShortcutsAndWidgets(); 2777 2778 // Use the absolute left instead of the child left, as we want the visible area 2779 // irrespective of the visible child. Since the view can only scroll horizontally, the 2780 // top position is not affected. 2781 mTempXY[0] = getViewportOffsetX() + getPaddingLeft() + boundingLayout.getLeft(); 2782 mTempXY[1] = child.getTop() + boundingLayout.getTop(); 2783 2784 float scale = mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(this, mTempXY); 2785 outArea.set(mTempXY[0], mTempXY[1], 2786 (int) (mTempXY[0] + scale * boundingLayout.getMeasuredWidth()), 2787 (int) (mTempXY[1] + scale * boundingLayout.getMeasuredHeight())); 2788 } 2789 2790 @Override 2791 public void onDragEnter(DragObject d) { 2792 if (ENFORCE_DRAG_EVENT_ORDER) { 2793 enfoceDragParity("onDragEnter", 1, 1); 2794 } 2795 2796 mCreateUserFolderOnDrop = false; 2797 mAddToExistingFolderOnDrop = false; 2798 2799 mDropToLayout = null; 2800 setDropLayoutForDragObject(d); 2801 2802 if (!workspaceInModalState() && FeatureFlags.LAUNCHER3_LEGACY_WORKSPACE_DND) { 2803 mLauncher.getDragLayer().showPageHints(); 2804 } 2805 } 2806 2807 @Override 2808 public void onDragExit(DragObject d) { 2809 if (ENFORCE_DRAG_EVENT_ORDER) { 2810 enfoceDragParity("onDragExit", -1, 0); 2811 } 2812 2813 // Here we store the final page that will be dropped to, if the workspace in fact 2814 // receives the drop 2815 if (mInScrollArea) { 2816 if (isPageMoving()) { 2817 // If the user drops while the page is scrolling, we should use that page as the 2818 // destination instead of the page that is being hovered over. 2819 mDropToLayout = (CellLayout) getPageAt(getNextPage()); 2820 } else { 2821 mDropToLayout = mDragOverlappingLayout; 2822 } 2823 } else { 2824 mDropToLayout = mDragTargetLayout; 2825 } 2826 2827 if (mDragMode == DRAG_MODE_CREATE_FOLDER) { 2828 mCreateUserFolderOnDrop = true; 2829 } else if (mDragMode == DRAG_MODE_ADD_TO_FOLDER) { 2830 mAddToExistingFolderOnDrop = true; 2831 } 2832 2833 // Reset the scroll area and previous drag target 2834 onResetScrollArea(); 2835 setCurrentDropLayout(null); 2836 setCurrentDragOverlappingLayout(null); 2837 2838 mSpringLoadedDragController.cancel(); 2839 2840 mLauncher.getDragLayer().hidePageHints(); 2841 } 2842 2843 private void enfoceDragParity(String event, int update, int expectedValue) { 2844 enfoceDragParity(this, event, update, expectedValue); 2845 for (int i = 0; i < getChildCount(); i++) { 2846 enfoceDragParity(getChildAt(i), event, update, expectedValue); 2847 } 2848 } 2849 2850 private void enfoceDragParity(View v, String event, int update, int expectedValue) { 2851 Object tag = v.getTag(R.id.drag_event_parity); 2852 int value = tag == null ? 0 : (Integer) tag; 2853 value += update; 2854 v.setTag(R.id.drag_event_parity, value); 2855 2856 if (value != expectedValue) { 2857 Log.e(TAG, event + ": Drag contract violated: " + value); 2858 } 2859 } 2860 2861 void setCurrentDropLayout(CellLayout layout) { 2862 if (mDragTargetLayout != null) { 2863 mDragTargetLayout.revertTempState(); 2864 mDragTargetLayout.onDragExit(); 2865 } 2866 mDragTargetLayout = layout; 2867 if (mDragTargetLayout != null) { 2868 mDragTargetLayout.onDragEnter(); 2869 } 2870 cleanupReorder(true); 2871 cleanupFolderCreation(); 2872 setCurrentDropOverCell(-1, -1); 2873 } 2874 2875 void setCurrentDragOverlappingLayout(CellLayout layout) { 2876 if (mDragOverlappingLayout != null) { 2877 mDragOverlappingLayout.setIsDragOverlapping(false); 2878 } 2879 mDragOverlappingLayout = layout; 2880 if (mDragOverlappingLayout != null) { 2881 mDragOverlappingLayout.setIsDragOverlapping(true); 2882 } 2883 // Invalidating the scrim will also force this CellLayout 2884 // to be invalidated so that it is highlighted if necessary. 2885 mLauncher.getDragLayer().invalidateScrim(); 2886 } 2887 2888 public CellLayout getCurrentDragOverlappingLayout() { 2889 return mDragOverlappingLayout; 2890 } 2891 2892 void setCurrentDropOverCell(int x, int y) { 2893 if (x != mDragOverX || y != mDragOverY) { 2894 mDragOverX = x; 2895 mDragOverY = y; 2896 setDragMode(DRAG_MODE_NONE); 2897 } 2898 } 2899 2900 void setDragMode(int dragMode) { 2901 if (dragMode != mDragMode) { 2902 if (dragMode == DRAG_MODE_NONE) { 2903 cleanupAddToFolder(); 2904 // We don't want to cancel the re-order alarm every time the target cell changes 2905 // as this feels to slow / unresponsive. 2906 cleanupReorder(false); 2907 cleanupFolderCreation(); 2908 } else if (dragMode == DRAG_MODE_ADD_TO_FOLDER) { 2909 cleanupReorder(true); 2910 cleanupFolderCreation(); 2911 } else if (dragMode == DRAG_MODE_CREATE_FOLDER) { 2912 cleanupAddToFolder(); 2913 cleanupReorder(true); 2914 } else if (dragMode == DRAG_MODE_REORDER) { 2915 cleanupAddToFolder(); 2916 cleanupFolderCreation(); 2917 } 2918 mDragMode = dragMode; 2919 } 2920 } 2921 2922 private void cleanupFolderCreation() { 2923 if (mFolderCreateBg != null) { 2924 mFolderCreateBg.animateToRest(); 2925 } 2926 mFolderCreationAlarm.setOnAlarmListener(null); 2927 mFolderCreationAlarm.cancelAlarm(); 2928 } 2929 2930 private void cleanupAddToFolder() { 2931 if (mDragOverFolderIcon != null) { 2932 mDragOverFolderIcon.onDragExit(); 2933 mDragOverFolderIcon = null; 2934 } 2935 } 2936 2937 private void cleanupReorder(boolean cancelAlarm) { 2938 // Any pending reorders are canceled 2939 if (cancelAlarm) { 2940 mReorderAlarm.cancelAlarm(); 2941 } 2942 mLastReorderX = -1; 2943 mLastReorderY = -1; 2944 } 2945 2946 /* 2947 * 2948 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2949 * coordinate space. The argument xy is modified with the return result. 2950 */ 2951 void mapPointFromSelfToChild(View v, float[] xy) { 2952 xy[0] = xy[0] - v.getLeft(); 2953 xy[1] = xy[1] - v.getTop(); 2954 } 2955 2956 boolean isPointInSelfOverHotseat(int x, int y) { 2957 mTempXY[0] = x; 2958 mTempXY[1] = y; 2959 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(this, mTempXY, true); 2960 View hotseat = mLauncher.getHotseat(); 2961 return mTempXY[0] >= hotseat.getLeft() && 2962 mTempXY[0] <= hotseat.getRight() && 2963 mTempXY[1] >= hotseat.getTop() && 2964 mTempXY[1] <= hotseat.getBottom(); 2965 } 2966 2967 void mapPointFromSelfToHotseatLayout(Hotseat hotseat, float[] xy) { 2968 mTempXY[0] = (int) xy[0]; 2969 mTempXY[1] = (int) xy[1]; 2970 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(this, mTempXY, true); 2971 mLauncher.getDragLayer().mapCoordInSelfToDescendent(hotseat.getLayout(), mTempXY); 2972 2973 xy[0] = mTempXY[0]; 2974 xy[1] = mTempXY[1]; 2975 } 2976 2977 /* 2978 * 2979 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2980 * the parent View's coordinate space. The argument xy is modified with the return result. 2981 * 2982 */ 2983 void mapPointFromChildToSelf(View v, float[] xy) { 2984 xy[0] += v.getLeft(); 2985 xy[1] += v.getTop(); 2986 } 2987 2988 static private float squaredDistance(float[] point1, float[] point2) { 2989 float distanceX = point1[0] - point2[0]; 2990 float distanceY = point2[1] - point2[1]; 2991 return distanceX * distanceX + distanceY * distanceY; 2992 } 2993 2994 /* 2995 * 2996 * This method returns the CellLayout that is currently being dragged to. In order to drag 2997 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2998 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2999 * 3000 * Return null if no CellLayout is currently being dragged over 3001 * 3002 */ 3003 private CellLayout findMatchingPageForDragOver( 3004 DragView dragView, float originX, float originY, boolean exact) { 3005 // We loop through all the screens (ie CellLayouts) and see which ones overlap 3006 // with the item being dragged and then choose the one that's closest to the touch point 3007 final int screenCount = getChildCount(); 3008 CellLayout bestMatchingScreen = null; 3009 float smallestDistSoFar = Float.MAX_VALUE; 3010 3011 for (int i = 0; i < screenCount; i++) { 3012 // The custom content screen is not a valid drag over option 3013 if (mScreenOrder.get(i) == CUSTOM_CONTENT_SCREEN_ID) { 3014 continue; 3015 } 3016 3017 CellLayout cl = (CellLayout) getChildAt(i); 3018 3019 final float[] touchXy = {originX, originY}; 3020 mapPointFromSelfToChild(cl, touchXy); 3021 3022 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 3023 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 3024 return cl; 3025 } 3026 3027 if (!exact) { 3028 // Get the center of the cell layout in screen coordinates 3029 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 3030 cellLayoutCenter[0] = cl.getWidth()/2; 3031 cellLayoutCenter[1] = cl.getHeight()/2; 3032 mapPointFromChildToSelf(cl, cellLayoutCenter); 3033 3034 touchXy[0] = originX; 3035 touchXy[1] = originY; 3036 3037 // Calculate the distance between the center of the CellLayout 3038 // and the touch point 3039 float dist = squaredDistance(touchXy, cellLayoutCenter); 3040 3041 if (dist < smallestDistSoFar) { 3042 smallestDistSoFar = dist; 3043 bestMatchingScreen = cl; 3044 } 3045 } 3046 } 3047 return bestMatchingScreen; 3048 } 3049 3050 private boolean isDragWidget(DragObject d) { 3051 return (d.dragInfo instanceof LauncherAppWidgetInfo || 3052 d.dragInfo instanceof PendingAddWidgetInfo); 3053 } 3054 3055 public void onDragOver(DragObject d) { 3056 // Skip drag over events while we are dragging over side pages 3057 if (mInScrollArea || !transitionStateShouldAllowDrop()) return; 3058 3059 ItemInfo item = d.dragInfo; 3060 if (item == null) { 3061 if (ProviderConfig.IS_DOGFOOD_BUILD) { 3062 throw new NullPointerException("DragObject has null info"); 3063 } 3064 return; 3065 } 3066 3067 // Ensure that we have proper spans for the item that we are dropping 3068 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 3069 mDragViewVisualCenter = d.getVisualCenter(mDragViewVisualCenter); 3070 3071 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 3072 if (setDropLayoutForDragObject(d)) { 3073 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 3074 if (isInSpringLoadedMode) { 3075 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 3076 mSpringLoadedDragController.cancel(); 3077 } else { 3078 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 3079 } 3080 } 3081 } 3082 3083 // Handle the drag over 3084 if (mDragTargetLayout != null) { 3085 // We want the point to be mapped to the dragTarget. 3086 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 3087 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 3088 } else { 3089 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter); 3090 } 3091 3092 int minSpanX = item.spanX; 3093 int minSpanY = item.spanY; 3094 if (item.minSpanX > 0 && item.minSpanY > 0) { 3095 minSpanX = item.minSpanX; 3096 minSpanY = item.minSpanY; 3097 } 3098 3099 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 3100 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, 3101 mDragTargetLayout, mTargetCell); 3102 int reorderX = mTargetCell[0]; 3103 int reorderY = mTargetCell[1]; 3104 3105 setCurrentDropOverCell(mTargetCell[0], mTargetCell[1]); 3106 3107 float targetCellDistance = mDragTargetLayout.getDistanceFromCell( 3108 mDragViewVisualCenter[0], mDragViewVisualCenter[1], mTargetCell); 3109 3110 manageFolderFeedback(mDragTargetLayout, mTargetCell, targetCellDistance, d); 3111 3112 boolean nearestDropOccupied = mDragTargetLayout.isNearestDropLocationOccupied((int) 3113 mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], item.spanX, 3114 item.spanY, child, mTargetCell); 3115 3116 if (!nearestDropOccupied) { 3117 mDragTargetLayout.visualizeDropLocation(child, mOutlineProvider, 3118 mTargetCell[0], mTargetCell[1], item.spanX, item.spanY, false, d); 3119 } else if ((mDragMode == DRAG_MODE_NONE || mDragMode == DRAG_MODE_REORDER) 3120 && !mReorderAlarm.alarmPending() && (mLastReorderX != reorderX || 3121 mLastReorderY != reorderY)) { 3122 3123 int[] resultSpan = new int[2]; 3124 mDragTargetLayout.performReorder((int) mDragViewVisualCenter[0], 3125 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, item.spanX, item.spanY, 3126 child, mTargetCell, resultSpan, CellLayout.MODE_SHOW_REORDER_HINT); 3127 3128 // Otherwise, if we aren't adding to or creating a folder and there's no pending 3129 // reorder, then we schedule a reorder 3130 ReorderAlarmListener listener = new ReorderAlarmListener(mDragViewVisualCenter, 3131 minSpanX, minSpanY, item.spanX, item.spanY, d, child); 3132 mReorderAlarm.setOnAlarmListener(listener); 3133 mReorderAlarm.setAlarm(REORDER_TIMEOUT); 3134 } 3135 3136 if (mDragMode == DRAG_MODE_CREATE_FOLDER || mDragMode == DRAG_MODE_ADD_TO_FOLDER || 3137 !nearestDropOccupied) { 3138 if (mDragTargetLayout != null) { 3139 mDragTargetLayout.revertTempState(); 3140 } 3141 } 3142 } 3143 } 3144 3145 /** 3146 * Updates {@link #mDragTargetLayout} and {@link #mDragOverlappingLayout} 3147 * based on the DragObject's position. 3148 * 3149 * The layout will be: 3150 * - The Hotseat if the drag object is over it 3151 * - A side page if we are in spring-loaded mode and the drag object is over it 3152 * - The current page otherwise 3153 * 3154 * @return whether the layout is different from the current {@link #mDragTargetLayout}. 3155 */ 3156 private boolean setDropLayoutForDragObject(DragObject d) { 3157 CellLayout layout = null; 3158 // Test to see if we are over the hotseat first 3159 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 3160 if (isPointInSelfOverHotseat(d.x, d.y)) { 3161 layout = mLauncher.getHotseat().getLayout(); 3162 } 3163 } 3164 if (layout == null) { 3165 // Identify whether we have dragged over a side page, 3166 // otherwise just use the current page 3167 layout = workspaceInModalState() ? 3168 findMatchingPageForDragOver(d.dragView, d.x, d.y, false) 3169 : getCurrentDropLayout(); 3170 } 3171 if (layout != mDragTargetLayout) { 3172 setCurrentDropLayout(layout); 3173 setCurrentDragOverlappingLayout(layout); 3174 return true; 3175 } 3176 return false; 3177 } 3178 3179 private void manageFolderFeedback(CellLayout targetLayout, 3180 int[] targetCell, float distance, DragObject dragObject) { 3181 if (distance > mMaxDistanceForFolderCreation) return; 3182 3183 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], mTargetCell[1]); 3184 ItemInfo info = dragObject.dragInfo; 3185 boolean userFolderPending = willCreateUserFolder(info, dragOverView, false); 3186 if (mDragMode == DRAG_MODE_NONE && userFolderPending && 3187 !mFolderCreationAlarm.alarmPending()) { 3188 3189 FolderCreationAlarmListener listener = new 3190 FolderCreationAlarmListener(targetLayout, targetCell[0], targetCell[1]); 3191 3192 if (!dragObject.accessibleDrag) { 3193 mFolderCreationAlarm.setOnAlarmListener(listener); 3194 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 3195 } else { 3196 listener.onAlarm(mFolderCreationAlarm); 3197 } 3198 3199 if (dragObject.stateAnnouncer != null) { 3200 dragObject.stateAnnouncer.announce(WorkspaceAccessibilityHelper 3201 .getDescriptionForDropOver(dragOverView, getContext())); 3202 } 3203 return; 3204 } 3205 3206 boolean willAddToFolder = willAddToExistingUserFolder(info, dragOverView); 3207 if (willAddToFolder && mDragMode == DRAG_MODE_NONE) { 3208 mDragOverFolderIcon = ((FolderIcon) dragOverView); 3209 mDragOverFolderIcon.onDragEnter(info); 3210 if (targetLayout != null) { 3211 targetLayout.clearDragOutlines(); 3212 } 3213 setDragMode(DRAG_MODE_ADD_TO_FOLDER); 3214 3215 if (dragObject.stateAnnouncer != null) { 3216 dragObject.stateAnnouncer.announce(WorkspaceAccessibilityHelper 3217 .getDescriptionForDropOver(dragOverView, getContext())); 3218 } 3219 return; 3220 } 3221 3222 if (mDragMode == DRAG_MODE_ADD_TO_FOLDER && !willAddToFolder) { 3223 setDragMode(DRAG_MODE_NONE); 3224 } 3225 if (mDragMode == DRAG_MODE_CREATE_FOLDER && !userFolderPending) { 3226 setDragMode(DRAG_MODE_NONE); 3227 } 3228 } 3229 3230 class FolderCreationAlarmListener implements OnAlarmListener { 3231 CellLayout layout; 3232 int cellX; 3233 int cellY; 3234 3235 FolderIcon.PreviewBackground bg = new FolderIcon.PreviewBackground(); 3236 3237 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 3238 this.layout = layout; 3239 this.cellX = cellX; 3240 this.cellY = cellY; 3241 3242 DeviceProfile grid = mLauncher.getDeviceProfile(); 3243 BubbleTextView cell = (BubbleTextView) layout.getChildAt(cellX, cellY); 3244 3245 bg.setup(getResources().getDisplayMetrics(), grid, null, 3246 cell.getMeasuredWidth(), cell.getPaddingTop()); 3247 3248 // The full preview background should appear behind the icon 3249 bg.isClipping = false; 3250 } 3251 3252 public void onAlarm(Alarm alarm) { 3253 mFolderCreateBg = bg; 3254 mFolderCreateBg.animateToAccept(layout, cellX, cellY); 3255 layout.clearDragOutlines(); 3256 setDragMode(DRAG_MODE_CREATE_FOLDER); 3257 } 3258 } 3259 3260 class ReorderAlarmListener implements OnAlarmListener { 3261 float[] dragViewCenter; 3262 int minSpanX, minSpanY, spanX, spanY; 3263 DragObject dragObject; 3264 View child; 3265 3266 public ReorderAlarmListener(float[] dragViewCenter, int minSpanX, int minSpanY, int spanX, 3267 int spanY, DragObject dragObject, View child) { 3268 this.dragViewCenter = dragViewCenter; 3269 this.minSpanX = minSpanX; 3270 this.minSpanY = minSpanY; 3271 this.spanX = spanX; 3272 this.spanY = spanY; 3273 this.child = child; 3274 this.dragObject = dragObject; 3275 } 3276 3277 public void onAlarm(Alarm alarm) { 3278 int[] resultSpan = new int[2]; 3279 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 3280 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, mDragTargetLayout, 3281 mTargetCell); 3282 mLastReorderX = mTargetCell[0]; 3283 mLastReorderY = mTargetCell[1]; 3284 3285 mTargetCell = mDragTargetLayout.performReorder((int) mDragViewVisualCenter[0], 3286 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 3287 child, mTargetCell, resultSpan, CellLayout.MODE_DRAG_OVER); 3288 3289 if (mTargetCell[0] < 0 || mTargetCell[1] < 0) { 3290 mDragTargetLayout.revertTempState(); 3291 } else { 3292 setDragMode(DRAG_MODE_REORDER); 3293 } 3294 3295 boolean resize = resultSpan[0] != spanX || resultSpan[1] != spanY; 3296 mDragTargetLayout.visualizeDropLocation(child, mOutlineProvider, 3297 mTargetCell[0], mTargetCell[1], resultSpan[0], resultSpan[1], resize, dragObject); 3298 } 3299 } 3300 3301 @Override 3302 public void getHitRectRelativeToDragLayer(Rect outRect) { 3303 // We want the workspace to have the whole area of the display (it will find the correct 3304 // cell layout to drop to in the existing drag/drop logic. 3305 mLauncher.getDragLayer().getDescendantRectRelativeToSelf(this, outRect); 3306 } 3307 3308 /** 3309 * Drop an item that didn't originate on one of the workspace screens. 3310 * It may have come from Launcher (e.g. from all apps or customize), or it may have 3311 * come from another app altogether. 3312 * 3313 * NOTE: This can also be called when we are outside of a drag event, when we want 3314 * to add an item to one of the workspace screens. 3315 */ 3316 private void onDropExternal(final int[] touchXY, final ItemInfo dragInfo, 3317 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 3318 final Runnable exitSpringLoadedRunnable = new Runnable() { 3319 @Override 3320 public void run() { 3321 mLauncher.exitSpringLoadedDragModeDelayed(true, 3322 Launcher.EXIT_SPRINGLOADED_MODE_SHORT_TIMEOUT, null); 3323 } 3324 }; 3325 3326 ItemInfo info = dragInfo; 3327 int spanX = info.spanX; 3328 int spanY = info.spanY; 3329 if (mDragInfo != null) { 3330 spanX = mDragInfo.spanX; 3331 spanY = mDragInfo.spanY; 3332 } 3333 3334 final long container = mLauncher.isHotseatLayout(cellLayout) ? 3335 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 3336 LauncherSettings.Favorites.CONTAINER_DESKTOP; 3337 final long screenId = getIdForScreen(cellLayout); 3338 if (!mLauncher.isHotseatLayout(cellLayout) 3339 && screenId != getScreenIdForPageIndex(mCurrentPage) 3340 && mState != State.SPRING_LOADED) { 3341 snapToScreenId(screenId, null); 3342 } 3343 3344 if (info instanceof PendingAddItemInfo) { 3345 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 3346 3347 boolean findNearestVacantCell = true; 3348 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 3349 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3350 cellLayout, mTargetCell); 3351 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3352 mDragViewVisualCenter[1], mTargetCell); 3353 if (willCreateUserFolder(d.dragInfo, cellLayout, mTargetCell, distance, true) 3354 || willAddToExistingUserFolder( 3355 d.dragInfo, cellLayout, mTargetCell, distance)) { 3356 findNearestVacantCell = false; 3357 } 3358 } 3359 3360 final ItemInfo item = d.dragInfo; 3361 boolean updateWidgetSize = false; 3362 if (findNearestVacantCell) { 3363 int minSpanX = item.spanX; 3364 int minSpanY = item.spanY; 3365 if (item.minSpanX > 0 && item.minSpanY > 0) { 3366 minSpanX = item.minSpanX; 3367 minSpanY = item.minSpanY; 3368 } 3369 int[] resultSpan = new int[2]; 3370 mTargetCell = cellLayout.performReorder((int) mDragViewVisualCenter[0], 3371 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, info.spanX, info.spanY, 3372 null, mTargetCell, resultSpan, CellLayout.MODE_ON_DROP_EXTERNAL); 3373 3374 if (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY) { 3375 updateWidgetSize = true; 3376 } 3377 item.spanX = resultSpan[0]; 3378 item.spanY = resultSpan[1]; 3379 } 3380 3381 Runnable onAnimationCompleteRunnable = new Runnable() { 3382 @Override 3383 public void run() { 3384 // Normally removeExtraEmptyScreen is called in Workspace#onDragEnd, but when 3385 // adding an item that may not be dropped right away (due to a config activity) 3386 // we defer the removal until the activity returns. 3387 deferRemoveExtraEmptyScreen(); 3388 3389 // When dragging and dropping from customization tray, we deal with creating 3390 // widgets/shortcuts/folders in a slightly different way 3391 mLauncher.addPendingItem(pendingInfo, container, screenId, mTargetCell, 3392 item.spanX, item.spanY); 3393 } 3394 }; 3395 boolean isWidget = pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET 3396 || pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_CUSTOM_APPWIDGET; 3397 3398 AppWidgetHostView finalView = isWidget ? 3399 ((PendingAddWidgetInfo) pendingInfo).boundWidget : null; 3400 3401 if (finalView != null && updateWidgetSize) { 3402 AppWidgetResizeFrame.updateWidgetSizeRanges(finalView, mLauncher, item.spanX, 3403 item.spanY); 3404 } 3405 3406 int animationStyle = ANIMATE_INTO_POSITION_AND_DISAPPEAR; 3407 if (isWidget && ((PendingAddWidgetInfo) pendingInfo).info != null && 3408 ((PendingAddWidgetInfo) pendingInfo).info.configure != null) { 3409 animationStyle = ANIMATE_INTO_POSITION_AND_REMAIN; 3410 } 3411 animateWidgetDrop(info, cellLayout, d.dragView, onAnimationCompleteRunnable, 3412 animationStyle, finalView, true); 3413 } else { 3414 // This is for other drag/drop cases, like dragging from All Apps 3415 View view = null; 3416 3417 switch (info.itemType) { 3418 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 3419 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3420 case LauncherSettings.Favorites.ITEM_TYPE_DEEP_SHORTCUT: 3421 if (info.container == NO_ID && info instanceof AppInfo) { 3422 // Came from all apps -- make a copy 3423 info = ((AppInfo) info).makeShortcut(); 3424 d.dragInfo = info; 3425 } 3426 view = mLauncher.createShortcut(cellLayout, (ShortcutInfo) info); 3427 break; 3428 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 3429 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 3430 (FolderInfo) info, mIconCache); 3431 break; 3432 default: 3433 throw new IllegalStateException("Unknown item type: " + info.itemType); 3434 } 3435 3436 // First we find the cell nearest to point at which the item is 3437 // dropped, without any consideration to whether there is an item there. 3438 if (touchXY != null) { 3439 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3440 cellLayout, mTargetCell); 3441 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3442 mDragViewVisualCenter[1], mTargetCell); 3443 d.postAnimationRunnable = exitSpringLoadedRunnable; 3444 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, distance, 3445 true, d.dragView, d.postAnimationRunnable)) { 3446 return; 3447 } 3448 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, distance, d, 3449 true)) { 3450 return; 3451 } 3452 } 3453 3454 if (touchXY != null) { 3455 // when dragging and dropping, just find the closest free spot 3456 mTargetCell = cellLayout.performReorder((int) mDragViewVisualCenter[0], 3457 (int) mDragViewVisualCenter[1], 1, 1, 1, 1, 3458 null, mTargetCell, null, CellLayout.MODE_ON_DROP_EXTERNAL); 3459 } else { 3460 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3461 } 3462 // Add the item to DB before adding to screen ensures that the container and other 3463 // values of the info is properly updated. 3464 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screenId, 3465 mTargetCell[0], mTargetCell[1]); 3466 3467 addInScreen(view, container, screenId, mTargetCell[0], mTargetCell[1], info.spanX, 3468 info.spanY, insertAtFirst); 3469 cellLayout.onDropChild(view); 3470 cellLayout.getShortcutsAndWidgets().measureChild(view); 3471 3472 if (d.dragView != null) { 3473 // We wrap the animation call in the temporary set and reset of the current 3474 // cellLayout to its final transform -- this means we animate the drag view to 3475 // the correct final location. 3476 setFinalTransitionTransform(cellLayout); 3477 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 3478 exitSpringLoadedRunnable, this); 3479 resetTransitionTransform(cellLayout); 3480 } 3481 } 3482 } 3483 3484 public Bitmap createWidgetBitmap(ItemInfo widgetInfo, View layout) { 3485 int[] unScaledSize = mLauncher.getWorkspace().estimateItemSize(widgetInfo, false); 3486 int visibility = layout.getVisibility(); 3487 layout.setVisibility(VISIBLE); 3488 3489 int width = MeasureSpec.makeMeasureSpec(unScaledSize[0], MeasureSpec.EXACTLY); 3490 int height = MeasureSpec.makeMeasureSpec(unScaledSize[1], MeasureSpec.EXACTLY); 3491 Bitmap b = Bitmap.createBitmap(unScaledSize[0], unScaledSize[1], 3492 Bitmap.Config.ARGB_8888); 3493 mCanvas.setBitmap(b); 3494 3495 layout.measure(width, height); 3496 layout.layout(0, 0, unScaledSize[0], unScaledSize[1]); 3497 layout.draw(mCanvas); 3498 mCanvas.setBitmap(null); 3499 layout.setVisibility(visibility); 3500 return b; 3501 } 3502 3503 private void getFinalPositionForDropAnimation(int[] loc, float[] scaleXY, 3504 DragView dragView, CellLayout layout, ItemInfo info, int[] targetCell, boolean scale) { 3505 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 3506 // location and size on the home screen. 3507 int spanX = info.spanX; 3508 int spanY = info.spanY; 3509 3510 Rect r = estimateItemPosition(layout, targetCell[0], targetCell[1], spanX, spanY); 3511 loc[0] = r.left; 3512 loc[1] = r.top; 3513 3514 setFinalTransitionTransform(layout); 3515 float cellLayoutScale = 3516 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(layout, loc, true); 3517 resetTransitionTransform(layout); 3518 3519 float dragViewScaleX; 3520 float dragViewScaleY; 3521 if (scale) { 3522 dragViewScaleX = (1.0f * r.width()) / dragView.getMeasuredWidth(); 3523 dragViewScaleY = (1.0f * r.height()) / dragView.getMeasuredHeight(); 3524 } else { 3525 dragViewScaleX = 1f; 3526 dragViewScaleY = 1f; 3527 } 3528 3529 // The animation will scale the dragView about its center, so we need to center about 3530 // the final location. 3531 loc[0] -= (dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2 3532 - Math.ceil(layout.getUnusedHorizontalSpace() / 2f); 3533 loc[1] -= (dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 3534 3535 scaleXY[0] = dragViewScaleX * cellLayoutScale; 3536 scaleXY[1] = dragViewScaleY * cellLayoutScale; 3537 } 3538 3539 public void animateWidgetDrop(ItemInfo info, CellLayout cellLayout, final DragView dragView, 3540 final Runnable onCompleteRunnable, int animationType, final View finalView, 3541 boolean external) { 3542 Rect from = new Rect(); 3543 mLauncher.getDragLayer().getViewRectRelativeToSelf(dragView, from); 3544 3545 int[] finalPos = new int[2]; 3546 float scaleXY[] = new float[2]; 3547 boolean scalePreview = !(info instanceof PendingAddShortcutInfo); 3548 getFinalPositionForDropAnimation(finalPos, scaleXY, dragView, cellLayout, info, mTargetCell, 3549 scalePreview); 3550 3551 Resources res = mLauncher.getResources(); 3552 final int duration = res.getInteger(R.integer.config_dropAnimMaxDuration) - 200; 3553 3554 boolean isWidget = info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET || 3555 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_CUSTOM_APPWIDGET; 3556 if ((animationType == ANIMATE_INTO_POSITION_AND_RESIZE || external) && finalView != null) { 3557 Bitmap crossFadeBitmap = createWidgetBitmap(info, finalView); 3558 dragView.setCrossFadeBitmap(crossFadeBitmap); 3559 dragView.crossFade((int) (duration * 0.8f)); 3560 } else if (isWidget && external) { 3561 scaleXY[0] = scaleXY[1] = Math.min(scaleXY[0], scaleXY[1]); 3562 } 3563 3564 DragLayer dragLayer = mLauncher.getDragLayer(); 3565 if (animationType == CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION) { 3566 mLauncher.getDragLayer().animateViewIntoPosition(dragView, finalPos, 0f, 0.1f, 0.1f, 3567 DragLayer.ANIMATION_END_DISAPPEAR, onCompleteRunnable, duration); 3568 } else { 3569 int endStyle; 3570 if (animationType == ANIMATE_INTO_POSITION_AND_REMAIN) { 3571 endStyle = DragLayer.ANIMATION_END_REMAIN_VISIBLE; 3572 } else { 3573 endStyle = DragLayer.ANIMATION_END_DISAPPEAR; 3574 } 3575 3576 Runnable onComplete = new Runnable() { 3577 @Override 3578 public void run() { 3579 if (finalView != null) { 3580 finalView.setVisibility(VISIBLE); 3581 } 3582 if (onCompleteRunnable != null) { 3583 onCompleteRunnable.run(); 3584 } 3585 } 3586 }; 3587 dragLayer.animateViewIntoPosition(dragView, from.left, from.top, finalPos[0], 3588 finalPos[1], 1, 1, 1, scaleXY[0], scaleXY[1], onComplete, endStyle, 3589 duration, this); 3590 } 3591 } 3592 3593 public void setFinalTransitionTransform(CellLayout layout) { 3594 if (isSwitchingState()) { 3595 mCurrentScale = getScaleX(); 3596 setScaleX(mStateTransitionAnimation.getFinalScale()); 3597 setScaleY(mStateTransitionAnimation.getFinalScale()); 3598 } 3599 } 3600 public void resetTransitionTransform(CellLayout layout) { 3601 if (isSwitchingState()) { 3602 setScaleX(mCurrentScale); 3603 setScaleY(mCurrentScale); 3604 } 3605 } 3606 3607 public WorkspaceStateTransitionAnimation getStateTransitionAnimation() { 3608 return mStateTransitionAnimation; 3609 } 3610 3611 /** 3612 * Return the current {@link CellLayout}, correctly picking the destination 3613 * screen while a scroll is in progress. 3614 */ 3615 public CellLayout getCurrentDropLayout() { 3616 return (CellLayout) getChildAt(getNextPage()); 3617 } 3618 3619 /** 3620 * Return the current CellInfo describing our current drag; this method exists 3621 * so that Launcher can sync this object with the correct info when the activity is created/ 3622 * destroyed 3623 * 3624 */ 3625 public CellLayout.CellInfo getDragInfo() { 3626 return mDragInfo; 3627 } 3628 3629 public int getCurrentPageOffsetFromCustomContent() { 3630 return getNextPage() - numCustomPages(); 3631 } 3632 3633 /** 3634 * Calculate the nearest cell where the given object would be dropped. 3635 * 3636 * pixelX and pixelY should be in the coordinate system of layout 3637 */ 3638 @Thunk int[] findNearestArea(int pixelX, int pixelY, 3639 int spanX, int spanY, CellLayout layout, int[] recycle) { 3640 return layout.findNearestArea( 3641 pixelX, pixelY, spanX, spanY, recycle); 3642 } 3643 3644 void setup(DragController dragController) { 3645 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3646 mDragController = dragController; 3647 3648 // hardware layers on children are enabled on startup, but should be disabled until 3649 // needed 3650 updateChildrenLayersEnabled(false); 3651 } 3652 3653 /** 3654 * Called at the end of a drag which originated on the workspace. 3655 */ 3656 public void onDropCompleted(final View target, final DragObject d, 3657 final boolean isFlingToDelete, final boolean success) { 3658 if (mDeferDropAfterUninstall) { 3659 mDeferredAction = new Runnable() { 3660 public void run() { 3661 onDropCompleted(target, d, isFlingToDelete, success); 3662 mDeferredAction = null; 3663 } 3664 }; 3665 return; 3666 } 3667 3668 boolean beingCalledAfterUninstall = mDeferredAction != null; 3669 3670 if (success && !(beingCalledAfterUninstall && !mUninstallSuccessful)) { 3671 if (target != this && mDragInfo != null) { 3672 removeWorkspaceItem(mDragInfo.cell); 3673 } 3674 } else if (mDragInfo != null) { 3675 final CellLayout cellLayout = mLauncher.getCellLayout( 3676 mDragInfo.container, mDragInfo.screenId); 3677 if (cellLayout != null) { 3678 cellLayout.onDropChild(mDragInfo.cell); 3679 } else if (ProviderConfig.IS_DOGFOOD_BUILD) { 3680 throw new RuntimeException("Invalid state: cellLayout == null in " 3681 + "Workspace#onDropCompleted. Please file a bug. "); 3682 }; 3683 } 3684 if ((d.cancelled || (beingCalledAfterUninstall && !mUninstallSuccessful)) 3685 && mDragInfo.cell != null) { 3686 mDragInfo.cell.setVisibility(VISIBLE); 3687 } 3688 mOutlineProvider = null; 3689 mDragInfo = null; 3690 3691 if (!isFlingToDelete) { 3692 // Fling to delete already exits spring loaded mode after the animation finishes. 3693 mLauncher.exitSpringLoadedDragModeDelayed(success, 3694 Launcher.EXIT_SPRINGLOADED_MODE_SHORT_TIMEOUT, mDelayedResizeRunnable); 3695 mDelayedResizeRunnable = null; 3696 } 3697 } 3698 3699 /** 3700 * For opposite operation. See {@link #addInScreen}. 3701 */ 3702 public void removeWorkspaceItem(View v) { 3703 CellLayout parentCell = getParentCellLayoutForView(v); 3704 if (parentCell != null) { 3705 parentCell.removeView(v); 3706 } else if (ProviderConfig.IS_DOGFOOD_BUILD) { 3707 // When an app is uninstalled using the drop target, we wait until resume to remove 3708 // the icon. We also remove all the corresponding items from the workspace at 3709 // {@link Launcher#bindComponentsRemoved}. That call can come before or after 3710 // {@link Launcher#mOnResumeCallbacks} depending on how busy the worker thread is. 3711 Log.e(TAG, "mDragInfo.cell has null parent"); 3712 } 3713 if (v instanceof DropTarget) { 3714 mDragController.removeDropTarget((DropTarget) v); 3715 } 3716 } 3717 3718 /** 3719 * Removes all folder listeners 3720 */ 3721 public void removeFolderListeners() { 3722 mapOverItems(false, new ItemOperator() { 3723 @Override 3724 public boolean evaluate(ItemInfo info, View view) { 3725 if (view instanceof FolderIcon) { 3726 ((FolderIcon) view).removeListeners(); 3727 } 3728 return false; 3729 } 3730 }); 3731 } 3732 3733 @Override 3734 public void deferCompleteDropAfterUninstallActivity() { 3735 mDeferDropAfterUninstall = true; 3736 } 3737 3738 /// maybe move this into a smaller part 3739 @Override 3740 public void onDragObjectRemoved(boolean success) { 3741 mDeferDropAfterUninstall = false; 3742 mUninstallSuccessful = success; 3743 if (mDeferredAction != null) { 3744 mDeferredAction.run(); 3745 } 3746 } 3747 3748 @Override 3749 public float getIntrinsicIconScaleFactor() { 3750 return 1f; 3751 } 3752 3753 @Override 3754 public boolean supportsFlingToDelete() { 3755 return true; 3756 } 3757 3758 @Override 3759 public boolean supportsAppInfoDropTarget() { 3760 return !FeatureFlags.LAUNCHER3_LEGACY_WORKSPACE_DND; 3761 } 3762 3763 @Override 3764 public boolean supportsDeleteDropTarget() { 3765 return true; 3766 } 3767 3768 @Override 3769 public void onFlingToDelete(DragObject d, PointF vec) { 3770 // Do nothing 3771 } 3772 3773 @Override 3774 public void onFlingToDeleteCompleted() { 3775 // Do nothing 3776 } 3777 3778 public boolean isDropEnabled() { 3779 return true; 3780 } 3781 3782 @Override 3783 protected void dispatchRestoreInstanceState(SparseArray<Parcelable> container) { 3784 // We don't dispatch restoreInstanceState to our children using this code path. 3785 // Some pages will be restored immediately as their items are bound immediately, and 3786 // others we will need to wait until after their items are bound. 3787 mSavedStates = container; 3788 } 3789 3790 public void restoreInstanceStateForChild(int child) { 3791 if (mSavedStates != null) { 3792 mRestoredPages.add(child); 3793 CellLayout cl = (CellLayout) getChildAt(child); 3794 if (cl != null) { 3795 cl.restoreInstanceState(mSavedStates); 3796 } 3797 } 3798 } 3799 3800 public void restoreInstanceStateForRemainingPages() { 3801 int count = getChildCount(); 3802 for (int i = 0; i < count; i++) { 3803 if (!mRestoredPages.contains(i)) { 3804 restoreInstanceStateForChild(i); 3805 } 3806 } 3807 mRestoredPages.clear(); 3808 mSavedStates = null; 3809 } 3810 3811 @Override 3812 public void scrollLeft() { 3813 if (!workspaceInModalState() && !mIsSwitchingState) { 3814 super.scrollLeft(); 3815 } 3816 Folder openFolder = getOpenFolder(); 3817 if (openFolder != null) { 3818 openFolder.completeDragExit(); 3819 } 3820 } 3821 3822 @Override 3823 public void scrollRight() { 3824 if (!workspaceInModalState() && !mIsSwitchingState) { 3825 super.scrollRight(); 3826 } 3827 Folder openFolder = getOpenFolder(); 3828 if (openFolder != null) { 3829 openFolder.completeDragExit(); 3830 } 3831 } 3832 3833 @Override 3834 public boolean onEnterScrollArea(int x, int y, int direction) { 3835 // Ignore the scroll area if we are dragging over the hot seat 3836 boolean isPortrait = !mLauncher.getDeviceProfile().isLandscape; 3837 if (mLauncher.getHotseat() != null && isPortrait) { 3838 Rect r = new Rect(); 3839 mLauncher.getHotseat().getHitRect(r); 3840 if (r.contains(x, y)) { 3841 return false; 3842 } 3843 } 3844 3845 boolean result = false; 3846 if (!workspaceInModalState() && !mIsSwitchingState && getOpenFolder() == null) { 3847 mInScrollArea = true; 3848 3849 final int page = getNextPage() + 3850 (direction == DragController.SCROLL_LEFT ? -1 : 1); 3851 // We always want to exit the current layout to ensure parity of enter / exit 3852 setCurrentDropLayout(null); 3853 3854 if (0 <= page && page < getChildCount()) { 3855 // Ensure that we are not dragging over to the custom content screen 3856 if (getScreenIdForPageIndex(page) == CUSTOM_CONTENT_SCREEN_ID) { 3857 return false; 3858 } 3859 3860 CellLayout layout = (CellLayout) getChildAt(page); 3861 setCurrentDragOverlappingLayout(layout); 3862 3863 // Workspace is responsible for drawing the edge glow on adjacent pages, 3864 // so we need to redraw the workspace when this may have changed. 3865 invalidate(); 3866 result = true; 3867 } 3868 } 3869 return result; 3870 } 3871 3872 @Override 3873 public boolean onExitScrollArea() { 3874 boolean result = false; 3875 if (mInScrollArea) { 3876 invalidate(); 3877 CellLayout layout = getCurrentDropLayout(); 3878 setCurrentDropLayout(layout); 3879 setCurrentDragOverlappingLayout(layout); 3880 3881 result = true; 3882 mInScrollArea = false; 3883 } 3884 return result; 3885 } 3886 3887 private void onResetScrollArea() { 3888 setCurrentDragOverlappingLayout(null); 3889 mInScrollArea = false; 3890 } 3891 3892 /** 3893 * Returns a specific CellLayout 3894 */ 3895 CellLayout getParentCellLayoutForView(View v) { 3896 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3897 for (CellLayout layout : layouts) { 3898 if (layout.getShortcutsAndWidgets().indexOfChild(v) > -1) { 3899 return layout; 3900 } 3901 } 3902 return null; 3903 } 3904 3905 /** 3906 * Returns a list of all the CellLayouts in the workspace. 3907 */ 3908 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3909 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3910 int screenCount = getChildCount(); 3911 for (int screen = 0; screen < screenCount; screen++) { 3912 layouts.add(((CellLayout) getChildAt(screen))); 3913 } 3914 if (mLauncher.getHotseat() != null) { 3915 layouts.add(mLauncher.getHotseat().getLayout()); 3916 } 3917 return layouts; 3918 } 3919 3920 /** 3921 * We should only use this to search for specific children. Do not use this method to modify 3922 * ShortcutsAndWidgetsContainer directly. Includes ShortcutAndWidgetContainers from 3923 * the hotseat and workspace pages 3924 */ 3925 ArrayList<ShortcutAndWidgetContainer> getAllShortcutAndWidgetContainers() { 3926 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = new ArrayList<>(); 3927 int screenCount = getChildCount(); 3928 for (int screen = 0; screen < screenCount; screen++) { 3929 childrenLayouts.add(((CellLayout) getChildAt(screen)).getShortcutsAndWidgets()); 3930 } 3931 if (mLauncher.getHotseat() != null) { 3932 childrenLayouts.add(mLauncher.getHotseat().getLayout().getShortcutsAndWidgets()); 3933 } 3934 return childrenLayouts; 3935 } 3936 3937 public View getHomescreenIconByItemId(final long id) { 3938 return getFirstMatch(new ItemOperator() { 3939 3940 @Override 3941 public boolean evaluate(ItemInfo info, View v) { 3942 return info != null && info.id == id; 3943 } 3944 }); 3945 } 3946 3947 public View getViewForTag(final Object tag) { 3948 return getFirstMatch(new ItemOperator() { 3949 3950 @Override 3951 public boolean evaluate(ItemInfo info, View v) { 3952 return info == tag; 3953 } 3954 }); 3955 } 3956 3957 public LauncherAppWidgetHostView getWidgetForAppWidgetId(final int appWidgetId) { 3958 return (LauncherAppWidgetHostView) getFirstMatch(new ItemOperator() { 3959 3960 @Override 3961 public boolean evaluate(ItemInfo info, View v) { 3962 return (info instanceof LauncherAppWidgetInfo) && 3963 ((LauncherAppWidgetInfo) info).appWidgetId == appWidgetId; 3964 } 3965 }); 3966 } 3967 3968 public View getFirstMatch(final ItemOperator operator) { 3969 final View[] value = new View[1]; 3970 mapOverItems(MAP_NO_RECURSE, new ItemOperator() { 3971 @Override 3972 public boolean evaluate(ItemInfo info, View v) { 3973 if (operator.evaluate(info, v)) { 3974 value[0] = v; 3975 return true; 3976 } 3977 return false; 3978 } 3979 }); 3980 return value[0]; 3981 } 3982 3983 void clearDropTargets() { 3984 mapOverItems(MAP_NO_RECURSE, new ItemOperator() { 3985 @Override 3986 public boolean evaluate(ItemInfo info, View v) { 3987 if (v instanceof DropTarget) { 3988 mDragController.removeDropTarget((DropTarget) v); 3989 } 3990 // not done, process all the shortcuts 3991 return false; 3992 } 3993 }); 3994 } 3995 3996 /** 3997 * Removes items that match the {@param matcher}. When applications are removed 3998 * as a part of an update, this is called to ensure that other widgets and application 3999 * shortcuts are not removed. 4000 */ 4001 public void removeItemsByMatcher(final ItemInfoMatcher matcher) { 4002 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 4003 for (final CellLayout layoutParent: cellLayouts) { 4004 final ViewGroup layout = layoutParent.getShortcutsAndWidgets(); 4005 4006 final HashMap<ItemInfo, View> children = new HashMap<>(); 4007 for (int j = 0; j < layout.getChildCount(); j++) { 4008 final View view = layout.getChildAt(j); 4009 children.put((ItemInfo) view.getTag(), view); 4010 } 4011 4012 final ArrayList<View> childrenToRemove = new ArrayList<>(); 4013 final HashMap<FolderInfo, ArrayList<ShortcutInfo>> folderAppsToRemove = new HashMap<>(); 4014 LauncherModel.ItemInfoFilter filter = new LauncherModel.ItemInfoFilter() { 4015 @Override 4016 public boolean filterItem(ItemInfo parent, ItemInfo info, 4017 ComponentName cn) { 4018 if (parent instanceof FolderInfo) { 4019 if (matcher.matches(info, cn)) { 4020 FolderInfo folder = (FolderInfo) parent; 4021 ArrayList<ShortcutInfo> appsToRemove; 4022 if (folderAppsToRemove.containsKey(folder)) { 4023 appsToRemove = folderAppsToRemove.get(folder); 4024 } else { 4025 appsToRemove = new ArrayList<ShortcutInfo>(); 4026 folderAppsToRemove.put(folder, appsToRemove); 4027 } 4028 appsToRemove.add((ShortcutInfo) info); 4029 return true; 4030 } 4031 } else { 4032 if (matcher.matches(info, cn)) { 4033 childrenToRemove.add(children.get(info)); 4034 return true; 4035 } 4036 } 4037 return false; 4038 } 4039 }; 4040 LauncherModel.filterItemInfos(children.keySet(), filter); 4041 4042 // Remove all the apps from their folders 4043 for (FolderInfo folder : folderAppsToRemove.keySet()) { 4044 ArrayList<ShortcutInfo> appsToRemove = folderAppsToRemove.get(folder); 4045 for (ShortcutInfo info : appsToRemove) { 4046 folder.remove(info, false); 4047 } 4048 } 4049 4050 // Remove all the other children 4051 for (View child : childrenToRemove) { 4052 // Note: We can not remove the view directly from CellLayoutChildren as this 4053 // does not re-mark the spaces as unoccupied. 4054 layoutParent.removeViewInLayout(child); 4055 if (child instanceof DropTarget) { 4056 mDragController.removeDropTarget((DropTarget) child); 4057 } 4058 } 4059 4060 if (childrenToRemove.size() > 0) { 4061 layout.requestLayout(); 4062 layout.invalidate(); 4063 } 4064 } 4065 4066 // Strip all the empty screens 4067 stripEmptyScreens(); 4068 } 4069 4070 public interface ItemOperator { 4071 /** 4072 * Process the next itemInfo, possibly with side-effect on the next item. 4073 * 4074 * @param info info for the shortcut 4075 * @param view view for the shortcut 4076 * @return true if done, false to continue the map 4077 */ 4078 public boolean evaluate(ItemInfo info, View view); 4079 } 4080 4081 /** 4082 * Map the operator over the shortcuts and widgets, return the first-non-null value. 4083 * 4084 * @param recurse true: iterate over folder children. false: op get the folders themselves. 4085 * @param op the operator to map over the shortcuts 4086 */ 4087 void mapOverItems(boolean recurse, ItemOperator op) { 4088 ArrayList<ShortcutAndWidgetContainer> containers = getAllShortcutAndWidgetContainers(); 4089 final int containerCount = containers.size(); 4090 for (int containerIdx = 0; containerIdx < containerCount; containerIdx++) { 4091 ShortcutAndWidgetContainer container = containers.get(containerIdx); 4092 // map over all the shortcuts on the workspace 4093 final int itemCount = container.getChildCount(); 4094 for (int itemIdx = 0; itemIdx < itemCount; itemIdx++) { 4095 View item = container.getChildAt(itemIdx); 4096 ItemInfo info = (ItemInfo) item.getTag(); 4097 if (recurse && info instanceof FolderInfo && item instanceof FolderIcon) { 4098 FolderIcon folder = (FolderIcon) item; 4099 ArrayList<View> folderChildren = folder.getFolder().getItemsInReadingOrder(); 4100 // map over all the children in the folder 4101 final int childCount = folderChildren.size(); 4102 for (int childIdx = 0; childIdx < childCount; childIdx++) { 4103 View child = folderChildren.get(childIdx); 4104 info = (ItemInfo) child.getTag(); 4105 if (op.evaluate(info, child)) { 4106 return; 4107 } 4108 } 4109 } else { 4110 if (op.evaluate(info, item)) { 4111 return; 4112 } 4113 } 4114 } 4115 } 4116 } 4117 4118 void updateShortcuts(ArrayList<ShortcutInfo> shortcuts) { 4119 int total = shortcuts.size(); 4120 final HashSet<ShortcutInfo> updates = new HashSet<ShortcutInfo>(total); 4121 final HashSet<Long> folderIds = new HashSet<>(); 4122 4123 for (int i = 0; i < total; i++) { 4124 ShortcutInfo s = shortcuts.get(i); 4125 updates.add(s); 4126 folderIds.add(s.container); 4127 } 4128 4129 mapOverItems(MAP_RECURSE, new ItemOperator() { 4130 @Override 4131 public boolean evaluate(ItemInfo info, View v) { 4132 if (info instanceof ShortcutInfo && v instanceof BubbleTextView && 4133 updates.contains(info)) { 4134 ShortcutInfo si = (ShortcutInfo) info; 4135 BubbleTextView shortcut = (BubbleTextView) v; 4136 Drawable oldIcon = getTextViewIcon(shortcut); 4137 boolean oldPromiseState = (oldIcon instanceof PreloadIconDrawable) 4138 && ((PreloadIconDrawable) oldIcon).hasNotCompleted(); 4139 shortcut.applyFromShortcutInfo(si, mIconCache, 4140 si.isPromise() != oldPromiseState); 4141 } 4142 // process all the shortcuts 4143 return false; 4144 } 4145 }); 4146 4147 // Update folder icons 4148 mapOverItems(MAP_NO_RECURSE, new ItemOperator() { 4149 @Override 4150 public boolean evaluate(ItemInfo info, View v) { 4151 if (info instanceof FolderInfo && folderIds.contains(info.id)) { 4152 ((FolderInfo) info).itemsChanged(false); 4153 } 4154 // process all the shortcuts 4155 return false; 4156 } 4157 }); 4158 } 4159 4160 public void removeAbandonedPromise(String packageName, UserHandleCompat user) { 4161 HashSet<String> packages = new HashSet<>(1); 4162 packages.add(packageName); 4163 LauncherModel.deletePackageFromDatabase(mLauncher, packageName, user); 4164 removeItemsByMatcher(ItemInfoMatcher.ofPackages(packages, user)); 4165 } 4166 4167 public void updateRestoreItems(final HashSet<ItemInfo> updates) { 4168 mapOverItems(MAP_RECURSE, new ItemOperator() { 4169 @Override 4170 public boolean evaluate(ItemInfo info, View v) { 4171 if (info instanceof ShortcutInfo && v instanceof BubbleTextView 4172 && updates.contains(info)) { 4173 ((BubbleTextView) v).applyState(false); 4174 } else if (v instanceof PendingAppWidgetHostView 4175 && info instanceof LauncherAppWidgetInfo 4176 && updates.contains(info)) { 4177 ((PendingAppWidgetHostView) v).applyState(); 4178 } 4179 // process all the shortcuts 4180 return false; 4181 } 4182 }); 4183 } 4184 4185 public void widgetsRestored(final ArrayList<LauncherAppWidgetInfo> changedInfo) { 4186 if (!changedInfo.isEmpty()) { 4187 DeferredWidgetRefresh widgetRefresh = new DeferredWidgetRefresh(changedInfo, 4188 mLauncher.getAppWidgetHost()); 4189 4190 LauncherAppWidgetInfo item = changedInfo.get(0); 4191 final AppWidgetProviderInfo widgetInfo; 4192 if (item.hasRestoreFlag(LauncherAppWidgetInfo.FLAG_ID_NOT_VALID)) { 4193 widgetInfo = AppWidgetManagerCompat 4194 .getInstance(mLauncher).findProvider(item.providerName, item.user); 4195 } else { 4196 widgetInfo = AppWidgetManagerCompat.getInstance(mLauncher) 4197 .getAppWidgetInfo(item.appWidgetId); 4198 } 4199 4200 if (widgetInfo != null) { 4201 // Re-inflate the widgets which have changed status 4202 widgetRefresh.run(); 4203 } else { 4204 // widgetRefresh will automatically run when the packages are updated. 4205 // For now just update the progress bars 4206 mapOverItems(MAP_NO_RECURSE, new ItemOperator() { 4207 @Override 4208 public boolean evaluate(ItemInfo info, View view) { 4209 if (view instanceof PendingAppWidgetHostView 4210 && changedInfo.contains(info)) { 4211 ((LauncherAppWidgetInfo) info).installProgress = 100; 4212 ((PendingAppWidgetHostView) view).applyState(); 4213 } 4214 // process all the shortcuts 4215 return false; 4216 } 4217 }); 4218 } 4219 } 4220 } 4221 4222 private void moveToScreen(int page, boolean animate) { 4223 if (!workspaceInModalState()) { 4224 if (animate) { 4225 snapToPage(page); 4226 } else { 4227 setCurrentPage(page); 4228 } 4229 } 4230 View child = getChildAt(page); 4231 if (child != null) { 4232 child.requestFocus(); 4233 } 4234 } 4235 4236 void moveToDefaultScreen(boolean animate) { 4237 moveToScreen(getDefaultPage(), animate); 4238 } 4239 4240 void moveToCustomContentScreen(boolean animate) { 4241 if (hasCustomContent()) { 4242 int ccIndex = getPageIndexForScreenId(CUSTOM_CONTENT_SCREEN_ID); 4243 if (animate) { 4244 snapToPage(ccIndex); 4245 } else { 4246 setCurrentPage(ccIndex); 4247 } 4248 View child = getChildAt(ccIndex); 4249 if (child != null) { 4250 child.requestFocus(); 4251 } 4252 } 4253 exitWidgetResizeMode(); 4254 } 4255 4256 @Override 4257 protected String getPageIndicatorDescription() { 4258 return getResources().getString(R.string.all_apps_button_label); 4259 } 4260 4261 @Override 4262 protected String getCurrentPageDescription() { 4263 if (hasCustomContent() && getNextPage() == 0) { 4264 return mCustomContentDescription; 4265 } 4266 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 4267 return getPageDescription(page); 4268 } 4269 4270 private String getPageDescription(int page) { 4271 int delta = numCustomPages(); 4272 int nScreens = getChildCount() - delta; 4273 int extraScreenId = mScreenOrder.indexOf(EXTRA_EMPTY_SCREEN_ID); 4274 if (extraScreenId >= 0 && nScreens > 1) { 4275 if (page == extraScreenId) { 4276 return getContext().getString(R.string.workspace_new_page); 4277 } 4278 nScreens--; 4279 } 4280 if (nScreens == 0) { 4281 // When the workspace is not loaded, we do not know how many screen will be bound. 4282 return getContext().getString(R.string.all_apps_home_button_label); 4283 } 4284 return getContext().getString(R.string.workspace_scroll_format, 4285 page + 1 - delta, nScreens); 4286 } 4287 4288 @Override 4289 public void fillInLaunchSourceData(View v, ItemInfo info, Target target, Target targetParent) { 4290 target.gridX = info.cellX; 4291 target.gridY = info.cellY; 4292 target.pageIndex = getCurrentPage(); 4293 targetParent.containerType = LauncherLogProto.WORKSPACE; 4294 if (info.container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 4295 target.rank = info.rank; 4296 targetParent.containerType = LauncherLogProto.HOTSEAT; 4297 } else if (info.container >= 0) { 4298 targetParent.containerType = LauncherLogProto.FOLDER; 4299 } 4300 } 4301 4302 /** 4303 * Used as a workaround to ensure that the AppWidgetService receives the 4304 * PACKAGE_ADDED broadcast before updating widgets. 4305 */ 4306 private class DeferredWidgetRefresh implements Runnable { 4307 private final ArrayList<LauncherAppWidgetInfo> mInfos; 4308 private final LauncherAppWidgetHost mHost; 4309 private final Handler mHandler; 4310 4311 private boolean mRefreshPending; 4312 4313 public DeferredWidgetRefresh(ArrayList<LauncherAppWidgetInfo> infos, 4314 LauncherAppWidgetHost host) { 4315 mInfos = infos; 4316 mHost = host; 4317 mHandler = new Handler(); 4318 mRefreshPending = true; 4319 4320 mHost.addProviderChangeListener(this); 4321 // Force refresh after 10 seconds, if we don't get the provider changed event. 4322 // This could happen when the provider is no longer available in the app. 4323 mHandler.postDelayed(this, 10000); 4324 } 4325 4326 @Override 4327 public void run() { 4328 mHost.removeProviderChangeListener(this); 4329 mHandler.removeCallbacks(this); 4330 4331 if (!mRefreshPending) { 4332 return; 4333 } 4334 4335 mRefreshPending = false; 4336 4337 mapOverItems(MAP_NO_RECURSE, new ItemOperator() { 4338 @Override 4339 public boolean evaluate(ItemInfo info, View view) { 4340 if (view instanceof PendingAppWidgetHostView && mInfos.contains(info)) { 4341 PendingAppWidgetHostView hostView = (PendingAppWidgetHostView) view; 4342 mLauncher.removeItem(view, info, false /* deleteFromDb */); 4343 mLauncher.bindAppWidget((LauncherAppWidgetInfo) info); 4344 } 4345 // process all the shortcuts 4346 return false; 4347 } 4348 }); 4349 } 4350 } 4351 4352 public interface OnStateChangeListener { 4353 4354 /** 4355 * Called when the workspace state is changing. 4356 * @param toState final state 4357 * @param targetAnim animation which will be played during the transition or null. 4358 */ 4359 void prepareStateChange(State toState, AnimatorSet targetAnim); 4360 } 4361 4362 public static final boolean isQsbContainerPage(int pageNo) { 4363 return pageNo == 0; 4364 } 4365 } 4366