Workspace.java revision 3c9c7263dcd06cba449597104db039a4019e15ff
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.launcher3; 18 19import android.animation.Animator; 20import android.animation.AnimatorListenerAdapter; 21import android.animation.LayoutTransition; 22import android.animation.ObjectAnimator; 23import android.animation.PropertyValuesHolder; 24import android.annotation.SuppressLint; 25import android.annotation.TargetApi; 26import android.app.WallpaperManager; 27import android.appwidget.AppWidgetHostView; 28import android.appwidget.AppWidgetProviderInfo; 29import android.content.ComponentName; 30import android.content.Context; 31import android.content.res.Resources; 32import android.content.res.TypedArray; 33import android.graphics.Bitmap; 34import android.graphics.Canvas; 35import android.graphics.Paint; 36import android.graphics.Point; 37import android.graphics.PointF; 38import android.graphics.Rect; 39import android.graphics.Region.Op; 40import android.graphics.drawable.Drawable; 41import android.os.AsyncTask; 42import android.os.Build; 43import android.os.Bundle; 44import android.os.Handler; 45import android.os.IBinder; 46import android.os.Parcelable; 47import android.util.AttributeSet; 48import android.util.Log; 49import android.util.SparseArray; 50import android.view.Choreographer; 51import android.view.MotionEvent; 52import android.view.View; 53import android.view.ViewGroup; 54import android.view.accessibility.AccessibilityManager; 55import android.view.animation.DecelerateInterpolator; 56import android.view.animation.Interpolator; 57import android.widget.TextView; 58 59import com.android.launcher3.FolderIcon.FolderRingAnimator; 60import com.android.launcher3.Launcher.CustomContentCallbacks; 61import com.android.launcher3.Launcher.LauncherOverlay; 62import com.android.launcher3.LauncherSettings.Favorites; 63import com.android.launcher3.UninstallDropTarget.UninstallSource; 64import com.android.launcher3.accessibility.LauncherAccessibilityDelegate; 65import com.android.launcher3.accessibility.LauncherAccessibilityDelegate.AccessibilityDragSource; 66import com.android.launcher3.accessibility.OverviewScreenAccessibilityDelegate; 67import com.android.launcher3.compat.UserHandleCompat; 68import com.android.launcher3.config.ProviderConfig; 69import com.android.launcher3.dragndrop.DragController; 70import com.android.launcher3.dragndrop.DragLayer; 71import com.android.launcher3.dragndrop.DragScroller; 72import com.android.launcher3.dragndrop.DragView; 73import com.android.launcher3.dragndrop.SpringLoadedDragController; 74import com.android.launcher3.util.LongArrayMap; 75import com.android.launcher3.util.Thunk; 76import com.android.launcher3.util.WallpaperUtils; 77import com.android.launcher3.widget.PendingAddShortcutInfo; 78import com.android.launcher3.widget.PendingAddWidgetInfo; 79 80import java.util.ArrayList; 81import java.util.HashMap; 82import java.util.HashSet; 83import java.util.concurrent.atomic.AtomicInteger; 84 85/** 86 * The workspace is a wide area with a wallpaper and a finite number of pages. 87 * Each page contains a number of icons, folders or widgets the user can 88 * interact with. A workspace is meant to be used with a fixed width only. 89 */ 90public class Workspace extends PagedView 91 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 92 DragController.DragListener, LauncherTransitionable, ViewGroup.OnHierarchyChangeListener, 93 Insettable, UninstallSource, AccessibilityDragSource, Stats.LaunchSourceProvider { 94 private static final String TAG = "Launcher.Workspace"; 95 96 private static boolean ENFORCE_DRAG_EVENT_ORDER = false; 97 98 private static final int SNAP_OFF_EMPTY_SCREEN_DURATION = 400; 99 private static final int FADE_EMPTY_SCREEN_DURATION = 150; 100 101 private static final int ADJACENT_SCREEN_DROP_DURATION = 300; 102 103 private static final boolean MAP_NO_RECURSE = false; 104 private static final boolean MAP_RECURSE = true; 105 106 // The screen id used for the empty screen always present to the right. 107 public final static long EXTRA_EMPTY_SCREEN_ID = -201; 108 private final static long CUSTOM_CONTENT_SCREEN_ID = -301; 109 110 private static final long CUSTOM_CONTENT_GESTURE_DELAY = 200; 111 private long mTouchDownTime = -1; 112 private long mCustomContentShowTime = -1; 113 114 private LayoutTransition mLayoutTransition; 115 @Thunk final WallpaperManager mWallpaperManager; 116 @Thunk IBinder mWindowToken; 117 118 private int mOriginalDefaultPage; 119 private int mDefaultPage; 120 121 private ShortcutAndWidgetContainer mDragSourceInternal; 122 123 @Thunk LongArrayMap<CellLayout> mWorkspaceScreens = new LongArrayMap<>(); 124 @Thunk ArrayList<Long> mScreenOrder = new ArrayList<Long>(); 125 126 @Thunk Runnable mRemoveEmptyScreenRunnable; 127 @Thunk boolean mDeferRemoveExtraEmptyScreen = false; 128 @Thunk boolean mAddNewPageOnDrag = true; 129 130 /** 131 * CellInfo for the cell that is currently being dragged 132 */ 133 private CellLayout.CellInfo mDragInfo; 134 135 /** 136 * Target drop area calculated during last acceptDrop call. 137 */ 138 @Thunk int[] mTargetCell = new int[2]; 139 private int mDragOverX = -1; 140 private int mDragOverY = -1; 141 142 CustomContentCallbacks mCustomContentCallbacks; 143 boolean mCustomContentShowing; 144 private float mLastCustomContentScrollProgress = -1f; 145 private String mCustomContentDescription = ""; 146 147 /** 148 * The CellLayout that is currently being dragged over 149 */ 150 @Thunk CellLayout mDragTargetLayout = null; 151 /** 152 * The CellLayout that we will show as glowing 153 */ 154 private CellLayout mDragOverlappingLayout = null; 155 156 /** 157 * The CellLayout which will be dropped to 158 */ 159 private CellLayout mDropToLayout = null; 160 161 @Thunk Launcher mLauncher; 162 @Thunk IconCache mIconCache; 163 @Thunk DragController mDragController; 164 165 // These are temporary variables to prevent having to allocate a new object just to 166 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 167 private static final Rect sTempRect = new Rect(); 168 private final int[] mTempXY = new int[2]; 169 @Thunk float[] mDragViewVisualCenter = new float[2]; 170 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 171 private int[] mTempVisiblePagesRange = new int[2]; 172 173 private SpringLoadedDragController mSpringLoadedDragController; 174 private float mSpringLoadedShrinkFactor; 175 private float mOverviewModeShrinkFactor; 176 177 // State variable that indicates whether the pages are small (ie when you're 178 // in all apps or customize mode) 179 180 enum State { 181 NORMAL (SearchDropTargetBar.State.SEARCH_BAR), 182 NORMAL_HIDDEN (SearchDropTargetBar.State.INVISIBLE), 183 SPRING_LOADED (SearchDropTargetBar.State.DROP_TARGET), 184 OVERVIEW (SearchDropTargetBar.State.INVISIBLE), 185 OVERVIEW_HIDDEN (SearchDropTargetBar.State.INVISIBLE); 186 187 private final SearchDropTargetBar.State mBarState; 188 189 State(SearchDropTargetBar.State searchBarState) { 190 mBarState = searchBarState; 191 } 192 193 public SearchDropTargetBar.State getSearchDropTargetBarState() { 194 return mBarState; 195 } 196 }; 197 198 private State mState = State.NORMAL; 199 private boolean mIsSwitchingState = false; 200 201 boolean mAnimatingViewIntoPlace = false; 202 boolean mChildrenLayersEnabled = true; 203 204 private boolean mStripScreensOnPageStopMoving = false; 205 206 /** Is the user is dragging an item near the edge of a page? */ 207 private boolean mInScrollArea = false; 208 209 private HolographicOutlineHelper mOutlineHelper; 210 @Thunk Bitmap mDragOutline = null; 211 public static final int DRAG_BITMAP_PADDING = 2; 212 private boolean mWorkspaceFadeInAdjacentScreens; 213 214 WallpaperOffsetInterpolator mWallpaperOffset; 215 @Thunk boolean mWallpaperIsLiveWallpaper; 216 @Thunk int mNumPagesForWallpaperParallax; 217 @Thunk float mLastSetWallpaperOffsetSteps = 0; 218 219 @Thunk Runnable mDelayedResizeRunnable; 220 private Runnable mDelayedSnapToPageRunnable; 221 222 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 223 private static final int FOLDER_CREATION_TIMEOUT = 0; 224 public static final int REORDER_TIMEOUT = 350; 225 private final Alarm mFolderCreationAlarm = new Alarm(); 226 private final Alarm mReorderAlarm = new Alarm(); 227 @Thunk FolderRingAnimator mDragFolderRingAnimator = null; 228 private FolderIcon mDragOverFolderIcon = null; 229 private boolean mCreateUserFolderOnDrop = false; 230 private boolean mAddToExistingFolderOnDrop = false; 231 private float mMaxDistanceForFolderCreation; 232 233 private final Canvas mCanvas = new Canvas(); 234 235 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 236 private float mXDown; 237 private float mYDown; 238 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 239 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 240 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 241 242 // Relating to the animation of items being dropped externally 243 public static final int ANIMATE_INTO_POSITION_AND_DISAPPEAR = 0; 244 public static final int ANIMATE_INTO_POSITION_AND_REMAIN = 1; 245 public static final int ANIMATE_INTO_POSITION_AND_RESIZE = 2; 246 public static final int COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION = 3; 247 public static final int CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION = 4; 248 249 // Related to dragging, folder creation and reordering 250 private static final int DRAG_MODE_NONE = 0; 251 private static final int DRAG_MODE_CREATE_FOLDER = 1; 252 private static final int DRAG_MODE_ADD_TO_FOLDER = 2; 253 private static final int DRAG_MODE_REORDER = 3; 254 private int mDragMode = DRAG_MODE_NONE; 255 @Thunk int mLastReorderX = -1; 256 @Thunk int mLastReorderY = -1; 257 258 private SparseArray<Parcelable> mSavedStates; 259 private final ArrayList<Integer> mRestoredPages = new ArrayList<Integer>(); 260 261 private float mCurrentScale; 262 private float mTransitionProgress; 263 264 @Thunk Runnable mDeferredAction; 265 private boolean mDeferDropAfterUninstall; 266 private boolean mUninstallSuccessful; 267 268 // State related to Launcher Overlay 269 LauncherOverlay mLauncherOverlay; 270 boolean mScrollInteractionBegan; 271 boolean mStartedSendingScrollEvents; 272 boolean mShouldSendPageSettled; 273 int mLastOverlaySroll = 0; 274 private boolean mForceDrawAdjacentPages = false; 275 276 // Handles workspace state transitions 277 private WorkspaceStateTransitionAnimation mStateTransitionAnimation; 278 279 private AccessibilityDelegate mPagesAccessibilityDelegate; 280 281 /** 282 * Used to inflate the Workspace from XML. 283 * 284 * @param context The application's context. 285 * @param attrs The attributes set containing the Workspace's customization values. 286 */ 287 public Workspace(Context context, AttributeSet attrs) { 288 this(context, attrs, 0); 289 } 290 291 /** 292 * Used to inflate the Workspace from XML. 293 * 294 * @param context The application's context. 295 * @param attrs The attributes set containing the Workspace's customization values. 296 * @param defStyle Unused. 297 */ 298 public Workspace(Context context, AttributeSet attrs, int defStyle) { 299 super(context, attrs, defStyle); 300 301 mOutlineHelper = HolographicOutlineHelper.obtain(context); 302 303 mLauncher = (Launcher) context; 304 mStateTransitionAnimation = new WorkspaceStateTransitionAnimation(mLauncher, this); 305 final Resources res = getResources(); 306 DeviceProfile grid = mLauncher.getDeviceProfile(); 307 mWorkspaceFadeInAdjacentScreens = grid.shouldFadeAdjacentWorkspaceScreens(); 308 mFadeInAdjacentScreens = false; 309 mWallpaperManager = WallpaperManager.getInstance(context); 310 311 TypedArray a = context.obtainStyledAttributes(attrs, 312 R.styleable.Workspace, defStyle, 0); 313 mSpringLoadedShrinkFactor = 314 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 315 mOverviewModeShrinkFactor = 316 res.getInteger(R.integer.config_workspaceOverviewShrinkPercentage) / 100f; 317 mOriginalDefaultPage = mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 318 a.recycle(); 319 320 setOnHierarchyChangeListener(this); 321 setHapticFeedbackEnabled(false); 322 323 initWorkspace(); 324 325 // Disable multitouch across the workspace/all apps/customize tray 326 setMotionEventSplittingEnabled(true); 327 } 328 329 @Override 330 public void setInsets(Rect insets) { 331 mInsets.set(insets); 332 333 CellLayout customScreen = getScreenWithId(CUSTOM_CONTENT_SCREEN_ID); 334 if (customScreen != null) { 335 View customContent = customScreen.getShortcutsAndWidgets().getChildAt(0); 336 if (customContent instanceof Insettable) { 337 ((Insettable) customContent).setInsets(mInsets); 338 } 339 } 340 } 341 342 // estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each 343 // dimension if unsuccessful 344 public int[] estimateItemSize(ItemInfo itemInfo, boolean springLoaded) { 345 int[] size = new int[2]; 346 if (getChildCount() > 0) { 347 // Use the first non-custom page to estimate the child position 348 CellLayout cl = (CellLayout) getChildAt(numCustomPages()); 349 Rect r = estimateItemPosition(cl, itemInfo, 0, 0, itemInfo.spanX, itemInfo.spanY); 350 size[0] = r.width(); 351 size[1] = r.height(); 352 if (springLoaded) { 353 size[0] *= mSpringLoadedShrinkFactor; 354 size[1] *= mSpringLoadedShrinkFactor; 355 } 356 return size; 357 } else { 358 size[0] = Integer.MAX_VALUE; 359 size[1] = Integer.MAX_VALUE; 360 return size; 361 } 362 } 363 364 public Rect estimateItemPosition(CellLayout cl, ItemInfo pendingInfo, 365 int hCell, int vCell, int hSpan, int vSpan) { 366 Rect r = new Rect(); 367 cl.cellToRect(hCell, vCell, hSpan, vSpan, r); 368 return r; 369 } 370 371 @Override 372 public void onDragStart(final DragSource source, ItemInfo info, int dragAction) { 373 if (ENFORCE_DRAG_EVENT_ORDER) { 374 enfoceDragParity("onDragStart", 0, 0); 375 } 376 377 updateChildrenLayersEnabled(false); 378 mLauncher.lockScreenOrientation(); 379 mLauncher.onInteractionBegin(); 380 // Prevent any Un/InstallShortcutReceivers from updating the db while we are dragging 381 InstallShortcutReceiver.enableInstallQueue(); 382 383 if (mAddNewPageOnDrag) { 384 mDeferRemoveExtraEmptyScreen = false; 385 addExtraEmptyScreenOnDrag(); 386 } 387 } 388 389 public void setAddNewPageOnDrag(boolean addPage) { 390 mAddNewPageOnDrag = addPage; 391 } 392 393 public void deferRemoveExtraEmptyScreen() { 394 mDeferRemoveExtraEmptyScreen = true; 395 } 396 397 @Override 398 public void onDragEnd() { 399 if (ENFORCE_DRAG_EVENT_ORDER) { 400 enfoceDragParity("onDragEnd", 0, 0); 401 } 402 403 if (!mDeferRemoveExtraEmptyScreen) { 404 removeExtraEmptyScreen(true, mDragSourceInternal != null); 405 } 406 407 updateChildrenLayersEnabled(false); 408 mLauncher.unlockScreenOrientation(false); 409 410 // Re-enable any Un/InstallShortcutReceiver and now process any queued items 411 InstallShortcutReceiver.disableAndFlushInstallQueue(getContext()); 412 413 mDragSourceInternal = null; 414 mLauncher.onInteractionEnd(); 415 } 416 417 /** 418 * Initializes various states for this workspace. 419 */ 420 protected void initWorkspace() { 421 mCurrentPage = mDefaultPage; 422 LauncherAppState app = LauncherAppState.getInstance(); 423 DeviceProfile grid = mLauncher.getDeviceProfile(); 424 mIconCache = app.getIconCache(); 425 setWillNotDraw(false); 426 setClipChildren(false); 427 setClipToPadding(false); 428 setChildrenDrawnWithCacheEnabled(true); 429 430 setMinScale(mOverviewModeShrinkFactor); 431 setupLayoutTransition(); 432 433 mWallpaperOffset = new WallpaperOffsetInterpolator(); 434 435 mMaxDistanceForFolderCreation = (0.55f * grid.iconSizePx); 436 437 // Set the wallpaper dimensions when Launcher starts up 438 setWallpaperDimension(); 439 440 setEdgeGlowColor(getResources().getColor(R.color.workspace_edge_effect_color)); 441 } 442 443 private void setupLayoutTransition() { 444 // We want to show layout transitions when pages are deleted, to close the gap. 445 mLayoutTransition = new LayoutTransition(); 446 mLayoutTransition.enableTransitionType(LayoutTransition.DISAPPEARING); 447 mLayoutTransition.enableTransitionType(LayoutTransition.CHANGE_DISAPPEARING); 448 mLayoutTransition.disableTransitionType(LayoutTransition.APPEARING); 449 mLayoutTransition.disableTransitionType(LayoutTransition.CHANGE_APPEARING); 450 setLayoutTransition(mLayoutTransition); 451 } 452 453 void enableLayoutTransitions() { 454 setLayoutTransition(mLayoutTransition); 455 } 456 void disableLayoutTransitions() { 457 setLayoutTransition(null); 458 } 459 460 @Override 461 public void onChildViewAdded(View parent, View child) { 462 if (!(child instanceof CellLayout)) { 463 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 464 } 465 CellLayout cl = ((CellLayout) child); 466 cl.setOnInterceptTouchListener(this); 467 cl.setClickable(true); 468 cl.setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_NO); 469 super.onChildViewAdded(parent, child); 470 } 471 472 protected boolean shouldDrawChild(View child) { 473 final CellLayout cl = (CellLayout) child; 474 return super.shouldDrawChild(child) && 475 (mIsSwitchingState || 476 cl.getShortcutsAndWidgets().getAlpha() > 0 || 477 cl.getBackgroundAlpha() > 0); 478 } 479 480 /** 481 * @return The open folder on the current screen, or null if there is none 482 */ 483 public Folder getOpenFolder() { 484 DragLayer dragLayer = mLauncher.getDragLayer(); 485 int count = dragLayer.getChildCount(); 486 for (int i = 0; i < count; i++) { 487 View child = dragLayer.getChildAt(i); 488 if (child instanceof Folder) { 489 Folder folder = (Folder) child; 490 if (folder.getInfo().opened) 491 return folder; 492 } 493 } 494 return null; 495 } 496 497 boolean isTouchActive() { 498 return mTouchState != TOUCH_STATE_REST; 499 } 500 501 public void removeAllWorkspaceScreens() { 502 // Disable all layout transitions before removing all pages to ensure that we don't get the 503 // transition animations competing with us changing the scroll when we add pages or the 504 // custom content screen 505 disableLayoutTransitions(); 506 507 // Since we increment the current page when we call addCustomContentPage via bindScreens 508 // (and other places), we need to adjust the current page back when we clear the pages 509 if (hasCustomContent()) { 510 removeCustomContentPage(); 511 } 512 513 // Remove the pages and clear the screen models 514 removeAllViews(); 515 mScreenOrder.clear(); 516 mWorkspaceScreens.clear(); 517 518 // Re-enable the layout transitions 519 enableLayoutTransitions(); 520 } 521 522 public long insertNewWorkspaceScreenBeforeEmptyScreen(long screenId) { 523 // Find the index to insert this view into. If the empty screen exists, then 524 // insert it before that. 525 int insertIndex = mScreenOrder.indexOf(EXTRA_EMPTY_SCREEN_ID); 526 if (insertIndex < 0) { 527 insertIndex = mScreenOrder.size(); 528 } 529 return insertNewWorkspaceScreen(screenId, insertIndex); 530 } 531 532 public long insertNewWorkspaceScreen(long screenId) { 533 return insertNewWorkspaceScreen(screenId, getChildCount()); 534 } 535 536 public long insertNewWorkspaceScreen(long screenId, int insertIndex) { 537 if (mWorkspaceScreens.containsKey(screenId)) { 538 throw new RuntimeException("Screen id " + screenId + " already exists!"); 539 } 540 541 // Inflate the cell layout, but do not add it automatically so that we can get the newly 542 // created CellLayout. 543 CellLayout newScreen = (CellLayout) mLauncher.getLayoutInflater().inflate( 544 R.layout.workspace_screen, this, false /* attachToRoot */); 545 546 newScreen.setOnLongClickListener(mLongClickListener); 547 newScreen.setOnClickListener(mLauncher); 548 newScreen.setSoundEffectsEnabled(false); 549 mWorkspaceScreens.put(screenId, newScreen); 550 mScreenOrder.add(insertIndex, screenId); 551 addView(newScreen, insertIndex); 552 553 LauncherAccessibilityDelegate delegate = 554 LauncherAppState.getInstance().getAccessibilityDelegate(); 555 if (delegate != null && delegate.isInAccessibleDrag()) { 556 newScreen.enableAccessibleDrag(true, CellLayout.WORKSPACE_ACCESSIBILITY_DRAG); 557 } 558 return screenId; 559 } 560 561 public void createCustomContentContainer() { 562 CellLayout customScreen = (CellLayout) 563 mLauncher.getLayoutInflater().inflate(R.layout.workspace_screen, this, false); 564 customScreen.disableDragTarget(); 565 customScreen.disableJailContent(); 566 567 mWorkspaceScreens.put(CUSTOM_CONTENT_SCREEN_ID, customScreen); 568 mScreenOrder.add(0, CUSTOM_CONTENT_SCREEN_ID); 569 570 // We want no padding on the custom content 571 customScreen.setPadding(0, 0, 0, 0); 572 573 addFullScreenPage(customScreen); 574 575 // Ensure that the current page and default page are maintained. 576 mDefaultPage = mOriginalDefaultPage + 1; 577 578 // Update the custom content hint 579 if (mRestorePage != INVALID_RESTORE_PAGE) { 580 mRestorePage = mRestorePage + 1; 581 } else { 582 setCurrentPage(getCurrentPage() + 1); 583 } 584 } 585 586 public void removeCustomContentPage() { 587 CellLayout customScreen = getScreenWithId(CUSTOM_CONTENT_SCREEN_ID); 588 if (customScreen == null) { 589 throw new RuntimeException("Expected custom content screen to exist"); 590 } 591 592 mWorkspaceScreens.remove(CUSTOM_CONTENT_SCREEN_ID); 593 mScreenOrder.remove(CUSTOM_CONTENT_SCREEN_ID); 594 removeView(customScreen); 595 596 if (mCustomContentCallbacks != null) { 597 mCustomContentCallbacks.onScrollProgressChanged(0); 598 mCustomContentCallbacks.onHide(); 599 } 600 601 mCustomContentCallbacks = null; 602 603 // Ensure that the current page and default page are maintained. 604 mDefaultPage = mOriginalDefaultPage - 1; 605 606 // Update the custom content hint 607 if (mRestorePage != INVALID_RESTORE_PAGE) { 608 mRestorePage = mRestorePage - 1; 609 } else { 610 setCurrentPage(getCurrentPage() - 1); 611 } 612 } 613 614 public void addToCustomContentPage(View customContent, CustomContentCallbacks callbacks, 615 String description) { 616 if (getPageIndexForScreenId(CUSTOM_CONTENT_SCREEN_ID) < 0) { 617 throw new RuntimeException("Expected custom content screen to exist"); 618 } 619 620 // Add the custom content to the full screen custom page 621 CellLayout customScreen = getScreenWithId(CUSTOM_CONTENT_SCREEN_ID); 622 int spanX = customScreen.getCountX(); 623 int spanY = customScreen.getCountY(); 624 CellLayout.LayoutParams lp = new CellLayout.LayoutParams(0, 0, spanX, spanY); 625 lp.canReorder = false; 626 lp.isFullscreen = true; 627 if (customContent instanceof Insettable) { 628 ((Insettable)customContent).setInsets(mInsets); 629 } 630 631 // Verify that the child is removed from any existing parent. 632 if (customContent.getParent() instanceof ViewGroup) { 633 ViewGroup parent = (ViewGroup) customContent.getParent(); 634 parent.removeView(customContent); 635 } 636 customScreen.removeAllViews(); 637 customScreen.addViewToCellLayout(customContent, 0, 0, lp, true); 638 mCustomContentDescription = description; 639 640 mCustomContentCallbacks = callbacks; 641 } 642 643 public void addExtraEmptyScreenOnDrag() { 644 boolean lastChildOnScreen = false; 645 boolean childOnFinalScreen = false; 646 647 // Cancel any pending removal of empty screen 648 mRemoveEmptyScreenRunnable = null; 649 650 if (mDragSourceInternal != null) { 651 if (mDragSourceInternal.getChildCount() == 1) { 652 lastChildOnScreen = true; 653 } 654 CellLayout cl = (CellLayout) mDragSourceInternal.getParent(); 655 if (indexOfChild(cl) == getChildCount() - 1) { 656 childOnFinalScreen = true; 657 } 658 } 659 660 // If this is the last item on the final screen 661 if (lastChildOnScreen && childOnFinalScreen) { 662 return; 663 } 664 if (!mWorkspaceScreens.containsKey(EXTRA_EMPTY_SCREEN_ID)) { 665 insertNewWorkspaceScreen(EXTRA_EMPTY_SCREEN_ID); 666 } 667 } 668 669 public boolean addExtraEmptyScreen() { 670 if (!mWorkspaceScreens.containsKey(EXTRA_EMPTY_SCREEN_ID)) { 671 insertNewWorkspaceScreen(EXTRA_EMPTY_SCREEN_ID); 672 return true; 673 } 674 return false; 675 } 676 677 private void convertFinalScreenToEmptyScreenIfNecessary() { 678 if (mLauncher.isWorkspaceLoading()) { 679 // Invalid and dangerous operation if workspace is loading 680 Launcher.addDumpLog(TAG, " - workspace loading, skip", true); 681 return; 682 } 683 684 if (hasExtraEmptyScreen() || mScreenOrder.size() == 0) return; 685 long finalScreenId = mScreenOrder.get(mScreenOrder.size() - 1); 686 687 if (finalScreenId == CUSTOM_CONTENT_SCREEN_ID) return; 688 CellLayout finalScreen = mWorkspaceScreens.get(finalScreenId); 689 690 // If the final screen is empty, convert it to the extra empty screen 691 if (finalScreen.getShortcutsAndWidgets().getChildCount() == 0 && 692 !finalScreen.isDropPending()) { 693 mWorkspaceScreens.remove(finalScreenId); 694 mScreenOrder.remove(finalScreenId); 695 696 // if this is the last non-custom content screen, convert it to the empty screen 697 mWorkspaceScreens.put(EXTRA_EMPTY_SCREEN_ID, finalScreen); 698 mScreenOrder.add(EXTRA_EMPTY_SCREEN_ID); 699 700 // Update the model if we have changed any screens 701 mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); 702 } 703 } 704 705 public void removeExtraEmptyScreen(final boolean animate, boolean stripEmptyScreens) { 706 removeExtraEmptyScreenDelayed(animate, null, 0, stripEmptyScreens); 707 } 708 709 public void removeExtraEmptyScreenDelayed(final boolean animate, final Runnable onComplete, 710 final int delay, final boolean stripEmptyScreens) { 711 if (mLauncher.isWorkspaceLoading()) { 712 // Don't strip empty screens if the workspace is still loading 713 Launcher.addDumpLog(TAG, " - workspace loading, skip", true); 714 return; 715 } 716 717 if (delay > 0) { 718 postDelayed(new Runnable() { 719 @Override 720 public void run() { 721 removeExtraEmptyScreenDelayed(animate, onComplete, 0, stripEmptyScreens); 722 } 723 }, delay); 724 return; 725 } 726 727 convertFinalScreenToEmptyScreenIfNecessary(); 728 if (hasExtraEmptyScreen()) { 729 int emptyIndex = mScreenOrder.indexOf(EXTRA_EMPTY_SCREEN_ID); 730 if (getNextPage() == emptyIndex) { 731 snapToPage(getNextPage() - 1, SNAP_OFF_EMPTY_SCREEN_DURATION); 732 fadeAndRemoveEmptyScreen(SNAP_OFF_EMPTY_SCREEN_DURATION, FADE_EMPTY_SCREEN_DURATION, 733 onComplete, stripEmptyScreens); 734 } else { 735 snapToPage(getNextPage(), 0); 736 fadeAndRemoveEmptyScreen(0, FADE_EMPTY_SCREEN_DURATION, 737 onComplete, stripEmptyScreens); 738 } 739 return; 740 } else if (stripEmptyScreens) { 741 // If we're not going to strip the empty screens after removing 742 // the extra empty screen, do it right away. 743 stripEmptyScreens(); 744 } 745 746 if (onComplete != null) { 747 onComplete.run(); 748 } 749 } 750 751 private void fadeAndRemoveEmptyScreen(int delay, int duration, final Runnable onComplete, 752 final boolean stripEmptyScreens) { 753 // XXX: Do we need to update LM workspace screens below? 754 PropertyValuesHolder alpha = PropertyValuesHolder.ofFloat("alpha", 0f); 755 PropertyValuesHolder bgAlpha = PropertyValuesHolder.ofFloat("backgroundAlpha", 0f); 756 757 final CellLayout cl = mWorkspaceScreens.get(EXTRA_EMPTY_SCREEN_ID); 758 759 mRemoveEmptyScreenRunnable = new Runnable() { 760 @Override 761 public void run() { 762 if (hasExtraEmptyScreen()) { 763 mWorkspaceScreens.remove(EXTRA_EMPTY_SCREEN_ID); 764 mScreenOrder.remove(EXTRA_EMPTY_SCREEN_ID); 765 removeView(cl); 766 if (stripEmptyScreens) { 767 stripEmptyScreens(); 768 } 769 } 770 } 771 }; 772 773 ObjectAnimator oa = ObjectAnimator.ofPropertyValuesHolder(cl, alpha, bgAlpha); 774 oa.setDuration(duration); 775 oa.setStartDelay(delay); 776 oa.addListener(new AnimatorListenerAdapter() { 777 @Override 778 public void onAnimationEnd(Animator animation) { 779 if (mRemoveEmptyScreenRunnable != null) { 780 mRemoveEmptyScreenRunnable.run(); 781 } 782 if (onComplete != null) { 783 onComplete.run(); 784 } 785 } 786 }); 787 oa.start(); 788 } 789 790 public boolean hasExtraEmptyScreen() { 791 int nScreens = getChildCount(); 792 nScreens = nScreens - numCustomPages(); 793 return mWorkspaceScreens.containsKey(EXTRA_EMPTY_SCREEN_ID) && nScreens > 1; 794 } 795 796 public long commitExtraEmptyScreen() { 797 if (mLauncher.isWorkspaceLoading()) { 798 // Invalid and dangerous operation if workspace is loading 799 Launcher.addDumpLog(TAG, " - workspace loading, skip", true); 800 return -1; 801 } 802 803 int index = getPageIndexForScreenId(EXTRA_EMPTY_SCREEN_ID); 804 CellLayout cl = mWorkspaceScreens.get(EXTRA_EMPTY_SCREEN_ID); 805 mWorkspaceScreens.remove(EXTRA_EMPTY_SCREEN_ID); 806 mScreenOrder.remove(EXTRA_EMPTY_SCREEN_ID); 807 808 long newId = LauncherAppState.getLauncherProvider().generateNewScreenId(); 809 mWorkspaceScreens.put(newId, cl); 810 mScreenOrder.add(newId); 811 812 // Update the page indicator marker 813 if (getPageIndicator() != null) { 814 getPageIndicator().updateMarker(index, getPageIndicatorMarker(index)); 815 } 816 817 // Update the model for the new screen 818 mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); 819 820 return newId; 821 } 822 823 public CellLayout getScreenWithId(long screenId) { 824 CellLayout layout = mWorkspaceScreens.get(screenId); 825 return layout; 826 } 827 828 public long getIdForScreen(CellLayout layout) { 829 int index = mWorkspaceScreens.indexOfValue(layout); 830 if (index != -1) { 831 return mWorkspaceScreens.keyAt(index); 832 } 833 return -1; 834 } 835 836 public int getPageIndexForScreenId(long screenId) { 837 return indexOfChild(mWorkspaceScreens.get(screenId)); 838 } 839 840 public long getScreenIdForPageIndex(int index) { 841 if (0 <= index && index < mScreenOrder.size()) { 842 return mScreenOrder.get(index); 843 } 844 return -1; 845 } 846 847 public ArrayList<Long> getScreenOrder() { 848 return mScreenOrder; 849 } 850 851 public void stripEmptyScreens() { 852 if (mLauncher.isWorkspaceLoading()) { 853 // Don't strip empty screens if the workspace is still loading. 854 // This is dangerous and can result in data loss. 855 Launcher.addDumpLog(TAG, " - workspace loading, skip", true); 856 return; 857 } 858 859 if (isPageMoving()) { 860 mStripScreensOnPageStopMoving = true; 861 return; 862 } 863 864 int currentPage = getNextPage(); 865 ArrayList<Long> removeScreens = new ArrayList<Long>(); 866 int total = mWorkspaceScreens.size(); 867 for (int i = 0; i < total; i++) { 868 long id = mWorkspaceScreens.keyAt(i); 869 CellLayout cl = mWorkspaceScreens.valueAt(i); 870 if (id >= 0 && cl.getShortcutsAndWidgets().getChildCount() == 0) { 871 removeScreens.add(id); 872 } 873 } 874 875 LauncherAccessibilityDelegate delegate = 876 LauncherAppState.getInstance().getAccessibilityDelegate(); 877 878 // We enforce at least one page to add new items to. In the case that we remove the last 879 // such screen, we convert the last screen to the empty screen 880 int minScreens = 1 + numCustomPages(); 881 882 int pageShift = 0; 883 for (Long id: removeScreens) { 884 CellLayout cl = mWorkspaceScreens.get(id); 885 mWorkspaceScreens.remove(id); 886 mScreenOrder.remove(id); 887 888 if (getChildCount() > minScreens) { 889 if (indexOfChild(cl) < currentPage) { 890 pageShift++; 891 } 892 893 if (delegate != null && delegate.isInAccessibleDrag()) { 894 cl.enableAccessibleDrag(false, CellLayout.WORKSPACE_ACCESSIBILITY_DRAG); 895 } 896 897 removeView(cl); 898 } else { 899 // if this is the last non-custom content screen, convert it to the empty screen 900 mRemoveEmptyScreenRunnable = null; 901 mWorkspaceScreens.put(EXTRA_EMPTY_SCREEN_ID, cl); 902 mScreenOrder.add(EXTRA_EMPTY_SCREEN_ID); 903 } 904 } 905 906 if (!removeScreens.isEmpty()) { 907 // Update the model if we have changed any screens 908 mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); 909 } 910 911 if (pageShift >= 0) { 912 setCurrentPage(currentPage - pageShift); 913 } 914 } 915 916 // See implementation for parameter definition. 917 void addInScreen(View child, long container, long screenId, 918 int x, int y, int spanX, int spanY) { 919 addInScreen(child, container, screenId, x, y, spanX, spanY, false, false); 920 } 921 922 // At bind time, we use the rank (screenId) to compute x and y for hotseat items. 923 // See implementation for parameter definition. 924 void addInScreenFromBind(View child, long container, long screenId, int x, int y, 925 int spanX, int spanY) { 926 addInScreen(child, container, screenId, x, y, spanX, spanY, false, true); 927 } 928 929 // See implementation for parameter definition. 930 void addInScreen(View child, long container, long screenId, int x, int y, int spanX, int spanY, 931 boolean insert) { 932 addInScreen(child, container, screenId, x, y, spanX, spanY, insert, false); 933 } 934 935 /** 936 * Adds the specified child in the specified screen. The position and dimension of 937 * the child are defined by x, y, spanX and spanY. 938 * 939 * @param child The child to add in one of the workspace's screens. 940 * @param screenId The screen in which to add the child. 941 * @param x The X position of the child in the screen's grid. 942 * @param y The Y position of the child in the screen's grid. 943 * @param spanX The number of cells spanned horizontally by the child. 944 * @param spanY The number of cells spanned vertically by the child. 945 * @param insert When true, the child is inserted at the beginning of the children list. 946 * @param computeXYFromRank When true, we use the rank (stored in screenId) to compute 947 * the x and y position in which to place hotseat items. Otherwise 948 * we use the x and y position to compute the rank. 949 */ 950 void addInScreen(View child, long container, long screenId, int x, int y, int spanX, int spanY, 951 boolean insert, boolean computeXYFromRank) { 952 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 953 if (getScreenWithId(screenId) == null) { 954 Log.e(TAG, "Skipping child, screenId " + screenId + " not found"); 955 // DEBUGGING - Print out the stack trace to see where we are adding from 956 new Throwable().printStackTrace(); 957 return; 958 } 959 } 960 if (screenId == EXTRA_EMPTY_SCREEN_ID) { 961 // This should never happen 962 throw new RuntimeException("Screen id should not be EXTRA_EMPTY_SCREEN_ID"); 963 } 964 965 final CellLayout layout; 966 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 967 layout = mLauncher.getHotseat().getLayout(); 968 child.setOnKeyListener(new HotseatIconKeyEventListener()); 969 970 // Hide folder title in the hotseat 971 if (child instanceof FolderIcon) { 972 ((FolderIcon) child).setTextVisible(false); 973 } 974 975 if (computeXYFromRank) { 976 x = mLauncher.getHotseat().getCellXFromOrder((int) screenId); 977 y = mLauncher.getHotseat().getCellYFromOrder((int) screenId); 978 } else { 979 screenId = mLauncher.getHotseat().getOrderInHotseat(x, y); 980 } 981 } else { 982 // Show folder title if not in the hotseat 983 if (child instanceof FolderIcon) { 984 ((FolderIcon) child).setTextVisible(true); 985 } 986 layout = getScreenWithId(screenId); 987 child.setOnKeyListener(new IconKeyEventListener()); 988 } 989 990 ViewGroup.LayoutParams genericLp = child.getLayoutParams(); 991 CellLayout.LayoutParams lp; 992 if (genericLp == null || !(genericLp instanceof CellLayout.LayoutParams)) { 993 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 994 } else { 995 lp = (CellLayout.LayoutParams) genericLp; 996 lp.cellX = x; 997 lp.cellY = y; 998 lp.cellHSpan = spanX; 999 lp.cellVSpan = spanY; 1000 } 1001 1002 if (spanX < 0 && spanY < 0) { 1003 lp.isLockedToGrid = false; 1004 } 1005 1006 // Get the canonical child id to uniquely represent this view in this screen 1007 ItemInfo info = (ItemInfo) child.getTag(); 1008 int childId = mLauncher.getViewIdForItem(info); 1009 1010 boolean markCellsAsOccupied = !(child instanceof Folder); 1011 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 1012 // TODO: This branch occurs when the workspace is adding views 1013 // outside of the defined grid 1014 // maybe we should be deleting these items from the LauncherModel? 1015 Launcher.addDumpLog(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout", true); 1016 } 1017 1018 if (!(child instanceof Folder)) { 1019 child.setHapticFeedbackEnabled(false); 1020 child.setOnLongClickListener(mLongClickListener); 1021 } 1022 if (child instanceof DropTarget) { 1023 mDragController.addDropTarget((DropTarget) child); 1024 } 1025 } 1026 1027 /** 1028 * Called directly from a CellLayout (not by the framework), after we've been added as a 1029 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 1030 * that it should intercept touch events, which is not something that is normally supported. 1031 */ 1032 @SuppressLint("ClickableViewAccessibility") 1033 @Override 1034 public boolean onTouch(View v, MotionEvent event) { 1035 return (workspaceInModalState() || !isFinishedSwitchingState()) 1036 || (!workspaceInModalState() && indexOfChild(v) != mCurrentPage); 1037 } 1038 1039 public boolean isSwitchingState() { 1040 return mIsSwitchingState; 1041 } 1042 1043 /** This differs from isSwitchingState in that we take into account how far the transition 1044 * has completed. */ 1045 public boolean isFinishedSwitchingState() { 1046 return !mIsSwitchingState || (mTransitionProgress > 0.5f); 1047 } 1048 1049 protected void onWindowVisibilityChanged (int visibility) { 1050 mLauncher.onWindowVisibilityChanged(visibility); 1051 } 1052 1053 @Override 1054 public boolean dispatchUnhandledMove(View focused, int direction) { 1055 if (workspaceInModalState() || !isFinishedSwitchingState()) { 1056 // when the home screens are shrunken, shouldn't allow side-scrolling 1057 return false; 1058 } 1059 return super.dispatchUnhandledMove(focused, direction); 1060 } 1061 1062 @Override 1063 public boolean onInterceptTouchEvent(MotionEvent ev) { 1064 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 1065 case MotionEvent.ACTION_DOWN: 1066 mXDown = ev.getX(); 1067 mYDown = ev.getY(); 1068 mTouchDownTime = System.currentTimeMillis(); 1069 break; 1070 case MotionEvent.ACTION_POINTER_UP: 1071 case MotionEvent.ACTION_UP: 1072 if (mTouchState == TOUCH_STATE_REST) { 1073 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 1074 if (currentPage != null) { 1075 onWallpaperTap(ev); 1076 } 1077 } 1078 } 1079 return super.onInterceptTouchEvent(ev); 1080 } 1081 1082 @Override 1083 public boolean onGenericMotionEvent(MotionEvent event) { 1084 // Ignore pointer scroll events if the custom content doesn't allow scrolling. 1085 if ((getScreenIdForPageIndex(getCurrentPage()) == CUSTOM_CONTENT_SCREEN_ID) 1086 && (mCustomContentCallbacks != null) 1087 && !mCustomContentCallbacks.isScrollingAllowed()) { 1088 return false; 1089 } 1090 return super.onGenericMotionEvent(event); 1091 } 1092 1093 protected void reinflateWidgetsIfNecessary() { 1094 final int clCount = getChildCount(); 1095 for (int i = 0; i < clCount; i++) { 1096 CellLayout cl = (CellLayout) getChildAt(i); 1097 ShortcutAndWidgetContainer swc = cl.getShortcutsAndWidgets(); 1098 final int itemCount = swc.getChildCount(); 1099 for (int j = 0; j < itemCount; j++) { 1100 View v = swc.getChildAt(j); 1101 1102 if (v != null && v.getTag() instanceof LauncherAppWidgetInfo) { 1103 LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) v.getTag(); 1104 LauncherAppWidgetHostView lahv = (LauncherAppWidgetHostView) info.hostView; 1105 if (lahv != null && lahv.isReinflateRequired()) { 1106 // Remove and rebind the current widget (which was inflated in the wrong 1107 // orientation), but don't delete it from the database 1108 mLauncher.removeItem(lahv, null, info, false /* deleteFromDb */); 1109 mLauncher.bindAppWidget(info); 1110 } 1111 } 1112 } 1113 } 1114 } 1115 1116 @Override 1117 protected void determineScrollingStart(MotionEvent ev) { 1118 if (!isFinishedSwitchingState()) return; 1119 1120 float deltaX = ev.getX() - mXDown; 1121 float absDeltaX = Math.abs(deltaX); 1122 float absDeltaY = Math.abs(ev.getY() - mYDown); 1123 1124 if (Float.compare(absDeltaX, 0f) == 0) return; 1125 1126 float slope = absDeltaY / absDeltaX; 1127 float theta = (float) Math.atan(slope); 1128 1129 if (absDeltaX > mTouchSlop || absDeltaY > mTouchSlop) { 1130 cancelCurrentPageLongPress(); 1131 } 1132 1133 boolean passRightSwipesToCustomContent = 1134 (mTouchDownTime - mCustomContentShowTime) > CUSTOM_CONTENT_GESTURE_DELAY; 1135 1136 boolean swipeInIgnoreDirection = mIsRtl ? deltaX < 0 : deltaX > 0; 1137 boolean onCustomContentScreen = 1138 getScreenIdForPageIndex(getCurrentPage()) == CUSTOM_CONTENT_SCREEN_ID; 1139 if (swipeInIgnoreDirection && onCustomContentScreen && passRightSwipesToCustomContent) { 1140 // Pass swipes to the right to the custom content page. 1141 return; 1142 } 1143 1144 if (onCustomContentScreen && (mCustomContentCallbacks != null) 1145 && !mCustomContentCallbacks.isScrollingAllowed()) { 1146 // Don't allow workspace scrolling if the current custom content screen doesn't allow 1147 // scrolling. 1148 return; 1149 } 1150 1151 if (theta > MAX_SWIPE_ANGLE) { 1152 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 1153 return; 1154 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 1155 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 1156 // increase the touch slop to make it harder to begin scrolling the workspace. This 1157 // results in vertically scrolling widgets to more easily. The higher the angle, the 1158 // more we increase touch slop. 1159 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 1160 float extraRatio = (float) 1161 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 1162 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 1163 } else { 1164 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 1165 super.determineScrollingStart(ev); 1166 } 1167 } 1168 1169 protected void onPageBeginMoving() { 1170 super.onPageBeginMoving(); 1171 1172 if (isHardwareAccelerated()) { 1173 updateChildrenLayersEnabled(false); 1174 } else { 1175 if (mNextPage != INVALID_PAGE) { 1176 // we're snapping to a particular screen 1177 enableChildrenCache(mCurrentPage, mNextPage); 1178 } else { 1179 // this is when user is actively dragging a particular screen, they might 1180 // swipe it either left or right (but we won't advance by more than one screen) 1181 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 1182 } 1183 } 1184 } 1185 1186 protected void onPageEndMoving() { 1187 super.onPageEndMoving(); 1188 1189 if (isHardwareAccelerated()) { 1190 updateChildrenLayersEnabled(false); 1191 } else { 1192 clearChildrenCache(); 1193 } 1194 1195 if (mDragController.isDragging()) { 1196 if (workspaceInModalState()) { 1197 // If we are in springloaded mode, then force an event to check if the current touch 1198 // is under a new page (to scroll to) 1199 mDragController.forceTouchMove(); 1200 } 1201 } 1202 1203 if (mDelayedResizeRunnable != null) { 1204 mDelayedResizeRunnable.run(); 1205 mDelayedResizeRunnable = null; 1206 } 1207 1208 if (mDelayedSnapToPageRunnable != null) { 1209 mDelayedSnapToPageRunnable.run(); 1210 mDelayedSnapToPageRunnable = null; 1211 } 1212 if (mStripScreensOnPageStopMoving) { 1213 stripEmptyScreens(); 1214 mStripScreensOnPageStopMoving = false; 1215 } 1216 1217 if (mShouldSendPageSettled) { 1218 mLauncherOverlay.onScrollSettled(); 1219 mShouldSendPageSettled = false; 1220 } 1221 } 1222 1223 protected void onScrollInteractionBegin() { 1224 super.onScrollInteractionEnd(); 1225 mScrollInteractionBegan = true; 1226 } 1227 1228 protected void onScrollInteractionEnd() { 1229 super.onScrollInteractionEnd(); 1230 mScrollInteractionBegan = false; 1231 if (mStartedSendingScrollEvents) { 1232 mStartedSendingScrollEvents = false; 1233 mLauncherOverlay.onScrollInteractionEnd(); 1234 } 1235 } 1236 1237 public void setLauncherOverlay(LauncherOverlay overlay) { 1238 mLauncherOverlay = overlay; 1239 } 1240 1241 @Override 1242 protected void overScroll(float amount) { 1243 boolean shouldOverScroll = (amount <= 0 && (!hasCustomContent() || mIsRtl)) || 1244 (amount >= 0 && (!hasCustomContent() || !mIsRtl)); 1245 1246 boolean shouldScrollOverlay = mLauncherOverlay != null && 1247 ((amount <= 0 && !mIsRtl) || (amount >= 0 && mIsRtl)); 1248 1249 boolean shouldZeroOverlay = mLauncherOverlay != null && mLastOverlaySroll != 0 && 1250 ((amount >= 0 && !mIsRtl) || (amount <= 0 && mIsRtl)); 1251 1252 if (shouldScrollOverlay) { 1253 if (!mStartedSendingScrollEvents && mScrollInteractionBegan) { 1254 mStartedSendingScrollEvents = true; 1255 mLauncherOverlay.onScrollInteractionBegin(); 1256 mShouldSendPageSettled = true; 1257 } 1258 int screenSize = getViewportWidth(); 1259 float f = (amount / screenSize); 1260 1261 int progress = (int) Math.abs((f * 100)); 1262 1263 mLastOverlaySroll = progress; 1264 mLauncherOverlay.onScrollChange(progress, mIsRtl); 1265 } else if (shouldOverScroll) { 1266 dampedOverScroll(amount); 1267 } 1268 1269 if (shouldZeroOverlay) { 1270 mLauncherOverlay.onScrollChange(0, mIsRtl); 1271 } 1272 } 1273 1274 @Override 1275 protected void getEdgeVerticalPostion(int[] pos) { 1276 View child = getChildAt(getPageCount() - 1); 1277 pos[0] = child.getTop(); 1278 pos[1] = child.getBottom(); 1279 } 1280 1281 @Override 1282 protected void notifyPageSwitchListener() { 1283 super.notifyPageSwitchListener(); 1284 1285 if (hasCustomContent() && getNextPage() == 0 && !mCustomContentShowing) { 1286 mCustomContentShowing = true; 1287 if (mCustomContentCallbacks != null) { 1288 mCustomContentCallbacks.onShow(false); 1289 mCustomContentShowTime = System.currentTimeMillis(); 1290 } 1291 } else if (hasCustomContent() && getNextPage() != 0 && mCustomContentShowing) { 1292 mCustomContentShowing = false; 1293 if (mCustomContentCallbacks != null) { 1294 mCustomContentCallbacks.onHide(); 1295 } 1296 } 1297 } 1298 1299 protected CustomContentCallbacks getCustomContentCallbacks() { 1300 return mCustomContentCallbacks; 1301 } 1302 1303 protected void setWallpaperDimension() { 1304 new AsyncTask<Void, Void, Void>() { 1305 public Void doInBackground(Void ... args) { 1306 if (Utilities.ATLEAST_KITKAT) { 1307 WallpaperUtils.suggestWallpaperDimension(mLauncher); 1308 } else { 1309 WallpaperUtils.suggestWallpaperDimensionPreK(mLauncher, 1310 mLauncher.overrideWallpaperDimensions()); 1311 } 1312 return null; 1313 } 1314 }.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, (Void) null); 1315 } 1316 1317 protected void snapToPage(int whichPage, Runnable r) { 1318 snapToPage(whichPage, SLOW_PAGE_SNAP_ANIMATION_DURATION, r); 1319 } 1320 1321 protected void snapToPage(int whichPage, int duration, Runnable r) { 1322 if (mDelayedSnapToPageRunnable != null) { 1323 mDelayedSnapToPageRunnable.run(); 1324 } 1325 mDelayedSnapToPageRunnable = r; 1326 snapToPage(whichPage, duration); 1327 } 1328 1329 public void snapToScreenId(long screenId) { 1330 snapToScreenId(screenId, null); 1331 } 1332 1333 protected void snapToScreenId(long screenId, Runnable r) { 1334 snapToPage(getPageIndexForScreenId(screenId), r); 1335 } 1336 1337 class WallpaperOffsetInterpolator implements Choreographer.FrameCallback { 1338 float mFinalOffset = 0.0f; 1339 float mCurrentOffset = 0.5f; // to force an initial update 1340 boolean mWaitingForUpdate; 1341 Choreographer mChoreographer; 1342 Interpolator mInterpolator; 1343 boolean mAnimating; 1344 long mAnimationStartTime; 1345 float mAnimationStartOffset; 1346 private final int ANIMATION_DURATION = 250; 1347 // Don't use all the wallpaper for parallax until you have at least this many pages 1348 private final int MIN_PARALLAX_PAGE_SPAN = 3; 1349 int mNumScreens; 1350 1351 public WallpaperOffsetInterpolator() { 1352 mChoreographer = Choreographer.getInstance(); 1353 mInterpolator = new DecelerateInterpolator(1.5f); 1354 } 1355 1356 @Override 1357 public void doFrame(long frameTimeNanos) { 1358 updateOffset(false); 1359 } 1360 1361 private void updateOffset(boolean force) { 1362 if (mWaitingForUpdate || force) { 1363 mWaitingForUpdate = false; 1364 if (computeScrollOffset() && mWindowToken != null) { 1365 try { 1366 mWallpaperManager.setWallpaperOffsets(mWindowToken, 1367 mWallpaperOffset.getCurrX(), 0.5f); 1368 setWallpaperOffsetSteps(); 1369 } catch (IllegalArgumentException e) { 1370 Log.e(TAG, "Error updating wallpaper offset: " + e); 1371 } 1372 } 1373 } 1374 } 1375 1376 public boolean computeScrollOffset() { 1377 final float oldOffset = mCurrentOffset; 1378 if (mAnimating) { 1379 long durationSinceAnimation = System.currentTimeMillis() - mAnimationStartTime; 1380 float t0 = durationSinceAnimation / (float) ANIMATION_DURATION; 1381 float t1 = mInterpolator.getInterpolation(t0); 1382 mCurrentOffset = mAnimationStartOffset + 1383 (mFinalOffset - mAnimationStartOffset) * t1; 1384 mAnimating = durationSinceAnimation < ANIMATION_DURATION; 1385 } else { 1386 mCurrentOffset = mFinalOffset; 1387 } 1388 1389 if (Math.abs(mCurrentOffset - mFinalOffset) > 0.0000001f) { 1390 scheduleUpdate(); 1391 } 1392 if (Math.abs(oldOffset - mCurrentOffset) > 0.0000001f) { 1393 return true; 1394 } 1395 return false; 1396 } 1397 1398 public float wallpaperOffsetForScroll(int scroll) { 1399 // TODO: do different behavior if it's a live wallpaper? 1400 // Don't use up all the wallpaper parallax until you have at least 1401 // MIN_PARALLAX_PAGE_SPAN pages 1402 int numScrollingPages = getNumScreensExcludingEmptyAndCustom(); 1403 int parallaxPageSpan; 1404 if (mWallpaperIsLiveWallpaper) { 1405 parallaxPageSpan = numScrollingPages - 1; 1406 } else { 1407 parallaxPageSpan = Math.max(MIN_PARALLAX_PAGE_SPAN, numScrollingPages - 1); 1408 } 1409 mNumPagesForWallpaperParallax = parallaxPageSpan; 1410 1411 if (getChildCount() <= 1) { 1412 if (mIsRtl) { 1413 return 1 - 1.0f/mNumPagesForWallpaperParallax; 1414 } 1415 return 0; 1416 } 1417 1418 // Exclude the leftmost page 1419 int emptyExtraPages = numEmptyScreensToIgnore(); 1420 int firstIndex = numCustomPages(); 1421 // Exclude the last extra empty screen (if we have > MIN_PARALLAX_PAGE_SPAN pages) 1422 int lastIndex = getChildCount() - 1 - emptyExtraPages; 1423 if (mIsRtl) { 1424 int temp = firstIndex; 1425 firstIndex = lastIndex; 1426 lastIndex = temp; 1427 } 1428 1429 int firstPageScrollX = getScrollForPage(firstIndex); 1430 int scrollRange = getScrollForPage(lastIndex) - firstPageScrollX; 1431 if (scrollRange == 0) { 1432 return 0; 1433 } else { 1434 // Sometimes the left parameter of the pages is animated during a layout transition; 1435 // this parameter offsets it to keep the wallpaper from animating as well 1436 int adjustedScroll = 1437 scroll - firstPageScrollX - getLayoutTransitionOffsetForPage(0); 1438 float offset = Math.min(1, adjustedScroll / (float) scrollRange); 1439 offset = Math.max(0, offset); 1440 1441 // On RTL devices, push the wallpaper offset to the right if we don't have enough 1442 // pages (ie if numScrollingPages < MIN_PARALLAX_PAGE_SPAN) 1443 if (!mWallpaperIsLiveWallpaper && numScrollingPages < MIN_PARALLAX_PAGE_SPAN 1444 && mIsRtl) { 1445 return offset * (parallaxPageSpan - numScrollingPages + 1) / parallaxPageSpan; 1446 } 1447 return offset * (numScrollingPages - 1) / parallaxPageSpan; 1448 } 1449 } 1450 1451 private float wallpaperOffsetForCurrentScroll() { 1452 return wallpaperOffsetForScroll(getScrollX()); 1453 } 1454 1455 private int numEmptyScreensToIgnore() { 1456 int numScrollingPages = getChildCount() - numCustomPages(); 1457 if (numScrollingPages >= MIN_PARALLAX_PAGE_SPAN && hasExtraEmptyScreen()) { 1458 return 1; 1459 } else { 1460 return 0; 1461 } 1462 } 1463 1464 private int getNumScreensExcludingEmptyAndCustom() { 1465 int numScrollingPages = getChildCount() - numEmptyScreensToIgnore() - numCustomPages(); 1466 return numScrollingPages; 1467 } 1468 1469 public void syncWithScroll() { 1470 float offset = wallpaperOffsetForCurrentScroll(); 1471 mWallpaperOffset.setFinalX(offset); 1472 updateOffset(true); 1473 } 1474 1475 public float getCurrX() { 1476 return mCurrentOffset; 1477 } 1478 1479 public float getFinalX() { 1480 return mFinalOffset; 1481 } 1482 1483 private void animateToFinal() { 1484 mAnimating = true; 1485 mAnimationStartOffset = mCurrentOffset; 1486 mAnimationStartTime = System.currentTimeMillis(); 1487 } 1488 1489 private void setWallpaperOffsetSteps() { 1490 // Set wallpaper offset steps (1 / (number of screens - 1)) 1491 float xOffset = 1.0f / mNumPagesForWallpaperParallax; 1492 if (xOffset != mLastSetWallpaperOffsetSteps) { 1493 mWallpaperManager.setWallpaperOffsetSteps(xOffset, 1.0f); 1494 mLastSetWallpaperOffsetSteps = xOffset; 1495 } 1496 } 1497 1498 public void setFinalX(float x) { 1499 scheduleUpdate(); 1500 mFinalOffset = Math.max(0f, Math.min(x, 1.0f)); 1501 if (getNumScreensExcludingEmptyAndCustom() != mNumScreens) { 1502 if (mNumScreens > 0) { 1503 // Don't animate if we're going from 0 screens 1504 animateToFinal(); 1505 } 1506 mNumScreens = getNumScreensExcludingEmptyAndCustom(); 1507 } 1508 } 1509 1510 private void scheduleUpdate() { 1511 if (!mWaitingForUpdate) { 1512 mChoreographer.postFrameCallback(this); 1513 mWaitingForUpdate = true; 1514 } 1515 } 1516 1517 public void jumpToFinal() { 1518 mCurrentOffset = mFinalOffset; 1519 } 1520 } 1521 1522 @Override 1523 public void computeScroll() { 1524 super.computeScroll(); 1525 mWallpaperOffset.syncWithScroll(); 1526 } 1527 1528 @Override 1529 public void announceForAccessibility(CharSequence text) { 1530 // Don't announce if apps is on top of us. 1531 if (!mLauncher.isAppsViewVisible()) { 1532 super.announceForAccessibility(text); 1533 } 1534 } 1535 1536 public void showOutlinesTemporarily() { 1537 if (!mIsPageMoving && !isTouchActive()) { 1538 snapToPage(mCurrentPage); 1539 } 1540 } 1541 1542 float backgroundAlphaInterpolator(float r) { 1543 float pivotA = 0.1f; 1544 float pivotB = 0.4f; 1545 if (r < pivotA) { 1546 return 0; 1547 } else if (r > pivotB) { 1548 return 1.0f; 1549 } else { 1550 return (r - pivotA)/(pivotB - pivotA); 1551 } 1552 } 1553 1554 private void updatePageAlphaValues(int screenCenter) { 1555 if (mWorkspaceFadeInAdjacentScreens && 1556 !workspaceInModalState() && 1557 !mIsSwitchingState) { 1558 for (int i = numCustomPages(); i < getChildCount(); i++) { 1559 CellLayout child = (CellLayout) getChildAt(i); 1560 if (child != null) { 1561 float scrollProgress = getScrollProgress(screenCenter, child, i); 1562 float alpha = 1 - Math.abs(scrollProgress); 1563 child.getShortcutsAndWidgets().setAlpha(alpha); 1564 } 1565 } 1566 } 1567 } 1568 1569 @TargetApi(Build.VERSION_CODES.LOLLIPOP) 1570 @Override 1571 public void enableAccessibleDrag(boolean enable) { 1572 for (int i = 0; i < getChildCount(); i++) { 1573 CellLayout child = (CellLayout) getChildAt(i); 1574 child.enableAccessibleDrag(enable, CellLayout.WORKSPACE_ACCESSIBILITY_DRAG); 1575 } 1576 1577 if (enable) { 1578 // We need to allow our individual children to become click handlers in this case 1579 setOnClickListener(null); 1580 } else { 1581 // Reset our click listener 1582 setOnClickListener(mLauncher); 1583 } 1584 mLauncher.getSearchDropTargetBar().enableAccessibleDrag(enable); 1585 mLauncher.getAppInfoDropTargetBar().enableAccessibleDrag(enable); 1586 mLauncher.getHotseat().getLayout() 1587 .enableAccessibleDrag(enable, CellLayout.WORKSPACE_ACCESSIBILITY_DRAG); 1588 } 1589 1590 public boolean hasCustomContent() { 1591 return (mScreenOrder.size() > 0 && mScreenOrder.get(0) == CUSTOM_CONTENT_SCREEN_ID); 1592 } 1593 1594 public int numCustomPages() { 1595 return hasCustomContent() ? 1 : 0; 1596 } 1597 1598 public boolean isOnOrMovingToCustomContent() { 1599 return hasCustomContent() && getNextPage() == 0 && mRestorePage == INVALID_RESTORE_PAGE; 1600 } 1601 1602 private void updateStateForCustomContent(int screenCenter) { 1603 float translationX = 0; 1604 float progress = 0; 1605 if (hasCustomContent()) { 1606 int index = mScreenOrder.indexOf(CUSTOM_CONTENT_SCREEN_ID); 1607 1608 int scrollDelta = getScrollX() - getScrollForPage(index) - 1609 getLayoutTransitionOffsetForPage(index); 1610 float scrollRange = getScrollForPage(index + 1) - getScrollForPage(index); 1611 translationX = scrollRange - scrollDelta; 1612 progress = (scrollRange - scrollDelta) / scrollRange; 1613 1614 if (mIsRtl) { 1615 translationX = Math.min(0, translationX); 1616 } else { 1617 translationX = Math.max(0, translationX); 1618 } 1619 progress = Math.max(0, progress); 1620 } 1621 1622 if (Float.compare(progress, mLastCustomContentScrollProgress) == 0) return; 1623 1624 CellLayout cc = mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID); 1625 if (progress > 0 && cc.getVisibility() != VISIBLE && !workspaceInModalState()) { 1626 cc.setVisibility(VISIBLE); 1627 } 1628 1629 mLastCustomContentScrollProgress = progress; 1630 1631 // We should only update the drag layer background alpha if we are not in all apps or the 1632 // widgets tray 1633 if (mState == State.NORMAL) { 1634 mLauncher.getDragLayer().setBackgroundAlpha(progress == 1 ? 0 : progress * 0.8f); 1635 } 1636 1637 if (mLauncher.getHotseat() != null) { 1638 mLauncher.getHotseat().setTranslationX(translationX); 1639 } 1640 1641 if (getPageIndicator() != null) { 1642 getPageIndicator().setTranslationX(translationX); 1643 } 1644 1645 if (mCustomContentCallbacks != null) { 1646 mCustomContentCallbacks.onScrollProgressChanged(progress); 1647 } 1648 } 1649 1650 @Override 1651 protected OnClickListener getPageIndicatorClickListener() { 1652 AccessibilityManager am = (AccessibilityManager) 1653 getContext().getSystemService(Context.ACCESSIBILITY_SERVICE); 1654 if (!am.isTouchExplorationEnabled()) { 1655 return null; 1656 } 1657 OnClickListener listener = new OnClickListener() { 1658 @Override 1659 public void onClick(View arg0) { 1660 mLauncher.showOverviewMode(true); 1661 } 1662 }; 1663 return listener; 1664 } 1665 1666 @Override 1667 protected void screenScrolled(int screenCenter) { 1668 updatePageAlphaValues(screenCenter); 1669 updateStateForCustomContent(screenCenter); 1670 enableHwLayersOnVisiblePages(); 1671 } 1672 1673 protected void onAttachedToWindow() { 1674 super.onAttachedToWindow(); 1675 mWindowToken = getWindowToken(); 1676 computeScroll(); 1677 mDragController.setWindowToken(mWindowToken); 1678 } 1679 1680 protected void onDetachedFromWindow() { 1681 super.onDetachedFromWindow(); 1682 mWindowToken = null; 1683 } 1684 1685 protected void onResume() { 1686 if (getPageIndicator() != null) { 1687 // In case accessibility state has changed, we need to perform this on every 1688 // attach to window 1689 OnClickListener listener = getPageIndicatorClickListener(); 1690 if (listener != null) { 1691 getPageIndicator().setOnClickListener(listener); 1692 } 1693 } 1694 1695 // Update wallpaper dimensions if they were changed since last onResume 1696 // (we also always set the wallpaper dimensions in the constructor) 1697 if (LauncherAppState.getInstance().hasWallpaperChangedSinceLastCheck()) { 1698 setWallpaperDimension(); 1699 } 1700 mWallpaperIsLiveWallpaper = mWallpaperManager.getWallpaperInfo() != null; 1701 // Force the wallpaper offset steps to be set again, because another app might have changed 1702 // them 1703 mLastSetWallpaperOffsetSteps = 0f; 1704 } 1705 1706 @Override 1707 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1708 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1709 mWallpaperOffset.syncWithScroll(); 1710 mWallpaperOffset.jumpToFinal(); 1711 } 1712 super.onLayout(changed, left, top, right, bottom); 1713 } 1714 1715 @Override 1716 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1717 if (!mLauncher.isAppsViewVisible()) { 1718 final Folder openFolder = getOpenFolder(); 1719 if (openFolder != null) { 1720 return openFolder.requestFocus(direction, previouslyFocusedRect); 1721 } else { 1722 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1723 } 1724 } 1725 return false; 1726 } 1727 1728 @Override 1729 public int getDescendantFocusability() { 1730 if (workspaceInModalState()) { 1731 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1732 } 1733 return super.getDescendantFocusability(); 1734 } 1735 1736 @Override 1737 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1738 if (!mLauncher.isAppsViewVisible()) { 1739 final Folder openFolder = getOpenFolder(); 1740 if (openFolder != null) { 1741 openFolder.addFocusables(views, direction); 1742 } else { 1743 super.addFocusables(views, direction, focusableMode); 1744 } 1745 } 1746 } 1747 1748 public boolean workspaceInModalState() { 1749 return mState != State.NORMAL; 1750 } 1751 1752 void enableChildrenCache(int fromPage, int toPage) { 1753 if (fromPage > toPage) { 1754 final int temp = fromPage; 1755 fromPage = toPage; 1756 toPage = temp; 1757 } 1758 1759 final int screenCount = getChildCount(); 1760 1761 fromPage = Math.max(fromPage, 0); 1762 toPage = Math.min(toPage, screenCount - 1); 1763 1764 for (int i = fromPage; i <= toPage; i++) { 1765 final CellLayout layout = (CellLayout) getChildAt(i); 1766 layout.setChildrenDrawnWithCacheEnabled(true); 1767 layout.setChildrenDrawingCacheEnabled(true); 1768 } 1769 } 1770 1771 void clearChildrenCache() { 1772 final int screenCount = getChildCount(); 1773 for (int i = 0; i < screenCount; i++) { 1774 final CellLayout layout = (CellLayout) getChildAt(i); 1775 layout.setChildrenDrawnWithCacheEnabled(false); 1776 // In software mode, we don't want the items to continue to be drawn into bitmaps 1777 if (!isHardwareAccelerated()) { 1778 layout.setChildrenDrawingCacheEnabled(false); 1779 } 1780 } 1781 } 1782 1783 @Thunk void updateChildrenLayersEnabled(boolean force) { 1784 boolean small = mState == State.OVERVIEW || mIsSwitchingState; 1785 boolean enableChildrenLayers = force || small || mAnimatingViewIntoPlace || isPageMoving(); 1786 1787 if (enableChildrenLayers != mChildrenLayersEnabled) { 1788 mChildrenLayersEnabled = enableChildrenLayers; 1789 if (mChildrenLayersEnabled) { 1790 enableHwLayersOnVisiblePages(); 1791 } else { 1792 for (int i = 0; i < getPageCount(); i++) { 1793 final CellLayout cl = (CellLayout) getChildAt(i); 1794 cl.enableHardwareLayer(false); 1795 } 1796 } 1797 } 1798 } 1799 1800 private void enableHwLayersOnVisiblePages() { 1801 if (mChildrenLayersEnabled) { 1802 final int screenCount = getChildCount(); 1803 getVisiblePages(mTempVisiblePagesRange); 1804 int leftScreen = mTempVisiblePagesRange[0]; 1805 int rightScreen = mTempVisiblePagesRange[1]; 1806 if (leftScreen == rightScreen) { 1807 // make sure we're caching at least two pages always 1808 if (rightScreen < screenCount - 1) { 1809 rightScreen++; 1810 } else if (leftScreen > 0) { 1811 leftScreen--; 1812 } 1813 } 1814 1815 final CellLayout customScreen = mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID); 1816 for (int i = 0; i < screenCount; i++) { 1817 final CellLayout layout = (CellLayout) getPageAt(i); 1818 1819 // enable layers between left and right screen inclusive, except for the 1820 // customScreen, which may animate its content during transitions. 1821 boolean enableLayer = layout != customScreen && 1822 leftScreen <= i && i <= rightScreen && shouldDrawChild(layout); 1823 layout.enableHardwareLayer(enableLayer); 1824 } 1825 } 1826 } 1827 1828 public void buildPageHardwareLayers() { 1829 // force layers to be enabled just for the call to buildLayer 1830 updateChildrenLayersEnabled(true); 1831 if (getWindowToken() != null) { 1832 final int childCount = getChildCount(); 1833 for (int i = 0; i < childCount; i++) { 1834 CellLayout cl = (CellLayout) getChildAt(i); 1835 cl.buildHardwareLayer(); 1836 } 1837 } 1838 updateChildrenLayersEnabled(false); 1839 } 1840 1841 @Override 1842 protected void getVisiblePages(int[] range) { 1843 super.getVisiblePages(range); 1844 if (mForceDrawAdjacentPages) { 1845 // In overview mode, make sure that the two side pages are visible. 1846 range[0] = Utilities.boundInRange(getCurrentPage() - 1, numCustomPages(), range[1]); 1847 range[1] = Utilities.boundInRange(getCurrentPage() + 1, range[0], getPageCount() - 1); 1848 } 1849 } 1850 1851 protected void onWallpaperTap(MotionEvent ev) { 1852 final int[] position = mTempXY; 1853 getLocationOnScreen(position); 1854 1855 int pointerIndex = ev.getActionIndex(); 1856 position[0] += (int) ev.getX(pointerIndex); 1857 position[1] += (int) ev.getY(pointerIndex); 1858 1859 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1860 ev.getAction() == MotionEvent.ACTION_UP 1861 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1862 position[0], position[1], 0, null); 1863 } 1864 1865 /* 1866 * 1867 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1868 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1869 * 1870 * These methods mark the appropriate pages as accepting drops (which alters their visual 1871 * appearance). 1872 * 1873 */ 1874 private static Rect getDrawableBounds(Drawable d) { 1875 Rect bounds = new Rect(); 1876 d.copyBounds(bounds); 1877 if (bounds.width() == 0 || bounds.height() == 0) { 1878 bounds.set(0, 0, d.getIntrinsicWidth(), d.getIntrinsicHeight()); 1879 } else { 1880 bounds.offsetTo(0, 0); 1881 } 1882 if (d instanceof PreloadIconDrawable) { 1883 int inset = -((PreloadIconDrawable) d).getOutset(); 1884 bounds.inset(inset, inset); 1885 } 1886 return bounds; 1887 } 1888 1889 public void onExternalDragStartedWithItem(View v) { 1890 // Compose a drag bitmap with the view scaled to the icon size 1891 DeviceProfile grid = mLauncher.getDeviceProfile(); 1892 int iconSize = grid.iconSizePx; 1893 int bmpWidth = v.getMeasuredWidth(); 1894 int bmpHeight = v.getMeasuredHeight(); 1895 1896 // If this is a text view, use its drawable instead 1897 if (v instanceof TextView) { 1898 Drawable d = getTextViewIcon((TextView) v); 1899 Rect bounds = getDrawableBounds(d); 1900 bmpWidth = bounds.width(); 1901 bmpHeight = bounds.height(); 1902 } 1903 1904 // Compose the bitmap to create the icon from 1905 Bitmap b = Bitmap.createBitmap(bmpWidth, bmpHeight, 1906 Bitmap.Config.ARGB_8888); 1907 mCanvas.setBitmap(b); 1908 drawDragView(v, mCanvas, 0); 1909 mCanvas.setBitmap(null); 1910 1911 // The outline is used to visualize where the item will land if dropped 1912 mDragOutline = createDragOutline(b, DRAG_BITMAP_PADDING, iconSize, iconSize, true); 1913 } 1914 1915 public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, boolean clipAlpha) { 1916 // Find a page that has enough space to place this widget (after rearranging/resizing). 1917 // Start at the current page and search right (on LTR) until finding a page with enough 1918 // space. Since an empty screen is the furthest right, a page must be found. 1919 int currentPageInOverview = getPageNearestToCenterOfScreen(); 1920 for (int pageIndex = currentPageInOverview; pageIndex < getPageCount(); pageIndex++) { 1921 CellLayout page = (CellLayout) getPageAt(pageIndex); 1922 if (page.hasReorderSolution(info)) { 1923 setCurrentPage(pageIndex); 1924 break; 1925 } 1926 } 1927 1928 int[] size = estimateItemSize(info, false); 1929 1930 // The outline is used to visualize where the item will land if dropped 1931 mDragOutline = createDragOutline(b, DRAG_BITMAP_PADDING, size[0], size[1], clipAlpha); 1932 } 1933 1934 public void exitWidgetResizeMode() { 1935 DragLayer dragLayer = mLauncher.getDragLayer(); 1936 dragLayer.clearAllResizeFrames(); 1937 } 1938 1939 @Override 1940 protected void getFreeScrollPageRange(int[] range) { 1941 getOverviewModePages(range); 1942 } 1943 1944 private void getOverviewModePages(int[] range) { 1945 int start = numCustomPages(); 1946 int end = getChildCount() - 1; 1947 1948 range[0] = Math.max(0, Math.min(start, getChildCount() - 1)); 1949 range[1] = Math.max(0, end); 1950 } 1951 1952 public void onStartReordering() { 1953 super.onStartReordering(); 1954 // Reordering handles its own animations, disable the automatic ones. 1955 disableLayoutTransitions(); 1956 } 1957 1958 public void onEndReordering() { 1959 super.onEndReordering(); 1960 1961 if (mLauncher.isWorkspaceLoading()) { 1962 // Invalid and dangerous operation if workspace is loading 1963 return; 1964 } 1965 1966 mScreenOrder.clear(); 1967 int count = getChildCount(); 1968 for (int i = 0; i < count; i++) { 1969 CellLayout cl = ((CellLayout) getChildAt(i)); 1970 mScreenOrder.add(getIdForScreen(cl)); 1971 } 1972 1973 mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); 1974 1975 // Re-enable auto layout transitions for page deletion. 1976 enableLayoutTransitions(); 1977 } 1978 1979 public boolean isInOverviewMode() { 1980 return mState == State.OVERVIEW; 1981 } 1982 1983 public void snapToPageFromOverView(int whichPage) { 1984 mStateTransitionAnimation.snapToPageFromOverView(whichPage); 1985 } 1986 1987 int getOverviewModeTranslationY() { 1988 DeviceProfile grid = mLauncher.getDeviceProfile(); 1989 Rect workspacePadding = grid.getWorkspacePadding(Utilities.isRtl(getResources())); 1990 int overviewButtonBarHeight = grid.getOverviewModeButtonBarHeight(); 1991 1992 int scaledHeight = (int) (mOverviewModeShrinkFactor * getNormalChildHeight()); 1993 int workspaceTop = mInsets.top + workspacePadding.top; 1994 int workspaceBottom = getViewportHeight() - mInsets.bottom - workspacePadding.bottom; 1995 int overviewTop = mInsets.top; 1996 int overviewBottom = getViewportHeight() - mInsets.bottom - overviewButtonBarHeight; 1997 int workspaceOffsetTopEdge = workspaceTop + ((workspaceBottom - workspaceTop) - scaledHeight) / 2; 1998 int overviewOffsetTopEdge = overviewTop + (overviewBottom - overviewTop - scaledHeight) / 2; 1999 return -workspaceOffsetTopEdge + overviewOffsetTopEdge; 2000 } 2001 2002 int getSpringLoadedTranslationY() { 2003 return getOverviewModeTranslationY(); 2004 } 2005 2006 /** 2007 * Sets the current workspace {@link State}, returning an animation transitioning the workspace 2008 * to that new state. 2009 */ 2010 public Animator setStateWithAnimation(State toState, boolean animated, 2011 HashMap<View, Integer> layerViews) { 2012 // Create the animation to the new state 2013 Animator workspaceAnim = mStateTransitionAnimation.getAnimationToState(mState, 2014 toState, animated, layerViews); 2015 2016 // Update the current state 2017 mState = toState; 2018 updateAccessibilityFlags(); 2019 if (mState == State.OVERVIEW || mState == State.SPRING_LOADED) { 2020 // Redraw pages, as we might want to draw pages which were not visible. 2021 mForceDrawAdjacentPages = true; 2022 invalidate(); // This will call dispatchDraw(), which calls getVisiblePages(). 2023 } 2024 2025 return workspaceAnim; 2026 } 2027 2028 State getState() { 2029 return mState; 2030 } 2031 2032 public void updateAccessibilityFlags() { 2033 if (Utilities.ATLEAST_LOLLIPOP) { 2034 int total = getPageCount(); 2035 for (int i = numCustomPages(); i < total; i++) { 2036 updateAccessibilityFlags((CellLayout) getPageAt(i), i); 2037 } 2038 setImportantForAccessibility((mState == State.NORMAL || mState == State.OVERVIEW) 2039 ? IMPORTANT_FOR_ACCESSIBILITY_AUTO 2040 : IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS); 2041 } else { 2042 int accessible = mState == State.NORMAL ? 2043 IMPORTANT_FOR_ACCESSIBILITY_AUTO : 2044 IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS; 2045 setImportantForAccessibility(accessible); 2046 } 2047 } 2048 2049 private void updateAccessibilityFlags(CellLayout page, int pageNo) { 2050 if (mState == State.OVERVIEW) { 2051 page.setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_YES); 2052 page.getShortcutsAndWidgets().setImportantForAccessibility( 2053 IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS); 2054 page.setContentDescription(getPageDescription(pageNo)); 2055 2056 if (mPagesAccessibilityDelegate == null) { 2057 mPagesAccessibilityDelegate = new OverviewScreenAccessibilityDelegate(this); 2058 } 2059 page.setAccessibilityDelegate(mPagesAccessibilityDelegate); 2060 } else { 2061 int accessible = mState == State.NORMAL ? 2062 IMPORTANT_FOR_ACCESSIBILITY_AUTO : 2063 IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS; 2064 page.setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_NO); 2065 page.getShortcutsAndWidgets().setImportantForAccessibility(accessible); 2066 page.setContentDescription(null); 2067 page.setAccessibilityDelegate(null); 2068 } 2069 } 2070 2071 @Override 2072 public void onLauncherTransitionPrepare(Launcher l, boolean animated, boolean toWorkspace) { 2073 mIsSwitchingState = true; 2074 2075 // Invalidate here to ensure that the pages are rendered during the state change transition. 2076 invalidate(); 2077 2078 updateChildrenLayersEnabled(false); 2079 hideCustomContentIfNecessary(); 2080 } 2081 2082 @Override 2083 public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) { 2084 } 2085 2086 @Override 2087 public void onLauncherTransitionStep(Launcher l, float t) { 2088 mTransitionProgress = t; 2089 } 2090 2091 @Override 2092 public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) { 2093 mIsSwitchingState = false; 2094 updateChildrenLayersEnabled(false); 2095 showCustomContentIfNecessary(); 2096 mForceDrawAdjacentPages = false; 2097 } 2098 2099 void updateCustomContentVisibility() { 2100 int visibility = mState == Workspace.State.NORMAL ? VISIBLE : INVISIBLE; 2101 if (hasCustomContent()) { 2102 mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID).setVisibility(visibility); 2103 } 2104 } 2105 2106 void showCustomContentIfNecessary() { 2107 boolean show = mState == Workspace.State.NORMAL; 2108 if (show && hasCustomContent()) { 2109 mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID).setVisibility(VISIBLE); 2110 } 2111 } 2112 2113 void hideCustomContentIfNecessary() { 2114 boolean hide = mState != Workspace.State.NORMAL; 2115 if (hide && hasCustomContent()) { 2116 disableLayoutTransitions(); 2117 mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID).setVisibility(INVISIBLE); 2118 enableLayoutTransitions(); 2119 } 2120 } 2121 2122 /** 2123 * Returns the drawable for the given text view. 2124 */ 2125 public static Drawable getTextViewIcon(TextView tv) { 2126 final Drawable[] drawables = tv.getCompoundDrawables(); 2127 for (int i = 0; i < drawables.length; i++) { 2128 if (drawables[i] != null) { 2129 return drawables[i]; 2130 } 2131 } 2132 return null; 2133 } 2134 2135 /** 2136 * Draw the View v into the given Canvas. 2137 * 2138 * @param v the view to draw 2139 * @param destCanvas the canvas to draw on 2140 * @param padding the horizontal and vertical padding to use when drawing 2141 */ 2142 private static void drawDragView(View v, Canvas destCanvas, int padding) { 2143 destCanvas.save(); 2144 if (v instanceof TextView) { 2145 Drawable d = getTextViewIcon((TextView) v); 2146 Rect bounds = getDrawableBounds(d); 2147 destCanvas.translate(padding / 2 - bounds.left, padding / 2 - bounds.top); 2148 d.draw(destCanvas); 2149 } else { 2150 final Rect clipRect = sTempRect; 2151 v.getDrawingRect(clipRect); 2152 2153 boolean textVisible = false; 2154 if (v instanceof FolderIcon) { 2155 // For FolderIcons the text can bleed into the icon area, and so we need to 2156 // hide the text completely (which can't be achieved by clipping). 2157 if (((FolderIcon) v).getTextVisible()) { 2158 ((FolderIcon) v).setTextVisible(false); 2159 textVisible = true; 2160 } 2161 } 2162 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 2163 destCanvas.clipRect(clipRect, Op.REPLACE); 2164 v.draw(destCanvas); 2165 2166 // Restore text visibility of FolderIcon if necessary 2167 if (textVisible) { 2168 ((FolderIcon) v).setTextVisible(true); 2169 } 2170 } 2171 destCanvas.restore(); 2172 } 2173 2174 /** 2175 * Returns a new bitmap to show when the given View is being dragged around. 2176 * Responsibility for the bitmap is transferred to the caller. 2177 * @param expectedPadding padding to add to the drag view. If a different padding was used 2178 * its value will be changed 2179 */ 2180 public Bitmap createDragBitmap(View v, AtomicInteger expectedPadding) { 2181 Bitmap b; 2182 2183 int padding = expectedPadding.get(); 2184 if (v instanceof TextView) { 2185 Drawable d = getTextViewIcon((TextView) v); 2186 Rect bounds = getDrawableBounds(d); 2187 b = Bitmap.createBitmap(bounds.width() + padding, 2188 bounds.height() + padding, Bitmap.Config.ARGB_8888); 2189 expectedPadding.set(padding - bounds.left - bounds.top); 2190 } else { 2191 b = Bitmap.createBitmap( 2192 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 2193 } 2194 2195 mCanvas.setBitmap(b); 2196 drawDragView(v, mCanvas, padding); 2197 mCanvas.setBitmap(null); 2198 2199 return b; 2200 } 2201 2202 /** 2203 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2204 * Responsibility for the bitmap is transferred to the caller. 2205 */ 2206 private Bitmap createDragOutline(View v, int padding) { 2207 final int outlineColor = getResources().getColor(R.color.outline_color); 2208 final Bitmap b = Bitmap.createBitmap( 2209 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 2210 2211 mCanvas.setBitmap(b); 2212 drawDragView(v, mCanvas, padding); 2213 mOutlineHelper.applyExpensiveOutlineWithBlur(b, mCanvas, outlineColor, outlineColor); 2214 mCanvas.setBitmap(null); 2215 return b; 2216 } 2217 2218 /** 2219 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2220 * Responsibility for the bitmap is transferred to the caller. 2221 */ 2222 private Bitmap createDragOutline(Bitmap orig, int padding, int w, int h, 2223 boolean clipAlpha) { 2224 final int outlineColor = getResources().getColor(R.color.outline_color); 2225 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 2226 mCanvas.setBitmap(b); 2227 2228 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 2229 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 2230 (h - padding) / (float) orig.getHeight()); 2231 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 2232 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 2233 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 2234 2235 // center the image 2236 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 2237 2238 mCanvas.drawBitmap(orig, src, dst, null); 2239 mOutlineHelper.applyExpensiveOutlineWithBlur(b, mCanvas, outlineColor, outlineColor, 2240 clipAlpha); 2241 mCanvas.setBitmap(null); 2242 2243 return b; 2244 } 2245 2246 public void startDrag(CellLayout.CellInfo cellInfo) { 2247 startDrag(cellInfo, false); 2248 } 2249 2250 @Override 2251 public void startDrag(CellLayout.CellInfo cellInfo, boolean accessible) { 2252 View child = cellInfo.cell; 2253 2254 // Make sure the drag was started by a long press as opposed to a long click. 2255 if (!child.isInTouchMode()) { 2256 return; 2257 } 2258 2259 mDragInfo = cellInfo; 2260 child.setVisibility(INVISIBLE); 2261 CellLayout layout = (CellLayout) child.getParent().getParent(); 2262 layout.prepareChildForDrag(child); 2263 2264 beginDragShared(child, this, accessible); 2265 } 2266 2267 public void beginDragShared(View child, DragSource source, boolean accessible) { 2268 beginDragShared(child, new Point(), source, accessible); 2269 } 2270 2271 public void beginDragShared(View child, Point relativeTouchPos, DragSource source, 2272 boolean accessible) { 2273 child.clearFocus(); 2274 child.setPressed(false); 2275 2276 // The outline is used to visualize where the item will land if dropped 2277 mDragOutline = createDragOutline(child, DRAG_BITMAP_PADDING); 2278 2279 mLauncher.onDragStarted(child); 2280 // The drag bitmap follows the touch point around on the screen 2281 AtomicInteger padding = new AtomicInteger(DRAG_BITMAP_PADDING); 2282 final Bitmap b = createDragBitmap(child, padding); 2283 2284 final int bmpWidth = b.getWidth(); 2285 final int bmpHeight = b.getHeight(); 2286 2287 float scale = mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 2288 int dragLayerX = Math.round(mTempXY[0] - (bmpWidth - scale * child.getWidth()) / 2); 2289 int dragLayerY = Math.round(mTempXY[1] - (bmpHeight - scale * bmpHeight) / 2 2290 - padding.get() / 2); 2291 2292 DeviceProfile grid = mLauncher.getDeviceProfile(); 2293 Point dragVisualizeOffset = null; 2294 Rect dragRect = null; 2295 if (child instanceof BubbleTextView) { 2296 BubbleTextView icon = (BubbleTextView) child; 2297 int iconSize = grid.iconSizePx; 2298 int top = child.getPaddingTop(); 2299 int left = (bmpWidth - iconSize) / 2; 2300 int right = left + iconSize; 2301 int bottom = top + iconSize; 2302 if (icon.isLayoutHorizontal()) { 2303 // If the layout is horizontal, then if we are just picking up the icon, then just 2304 // use the child position since the icon is top-left aligned. Otherwise, offset 2305 // the drag layer position horizontally so that the icon is under the current 2306 // touch position. 2307 if (icon.getIcon().getBounds().contains(relativeTouchPos.x, relativeTouchPos.y)) { 2308 dragLayerX = Math.round(mTempXY[0]); 2309 } else { 2310 dragLayerX = Math.round(mTempXY[0] + relativeTouchPos.x - (bmpWidth / 2)); 2311 } 2312 } 2313 dragLayerY += top; 2314 // Note: The drag region is used to calculate drag layer offsets, but the 2315 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 2316 dragVisualizeOffset = new Point(-padding.get() / 2, padding.get() / 2); 2317 dragRect = new Rect(left, top, right, bottom); 2318 } else if (child instanceof FolderIcon) { 2319 int previewSize = grid.folderIconSizePx; 2320 dragVisualizeOffset = new Point(-padding.get() / 2, 2321 padding.get() / 2 - child.getPaddingTop()); 2322 dragRect = new Rect(0, child.getPaddingTop(), child.getWidth(), previewSize); 2323 } 2324 2325 // Clear the pressed state if necessary 2326 if (child instanceof BubbleTextView) { 2327 BubbleTextView icon = (BubbleTextView) child; 2328 icon.clearPressedBackground(); 2329 } 2330 2331 Object dragObject = child.getTag(); 2332 if (!(dragObject instanceof ItemInfo)) { 2333 String msg = "Drag started with a view that has no tag set. This " 2334 + "will cause a crash (issue 11627249) down the line. " 2335 + "View: " + child + " tag: " + child.getTag(); 2336 throw new IllegalStateException(msg); 2337 } 2338 2339 if (child.getParent() instanceof ShortcutAndWidgetContainer) { 2340 mDragSourceInternal = (ShortcutAndWidgetContainer) child.getParent(); 2341 } 2342 2343 DragView dv = mDragController.startDrag(b, dragLayerX, dragLayerY, source, 2344 (ItemInfo) dragObject, DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, 2345 dragRect, scale, accessible); 2346 dv.setIntrinsicIconScaleFactor(source.getIntrinsicIconScaleFactor()); 2347 2348 b.recycle(); 2349 2350 mLauncher.enterSpringLoadedDragMode(); 2351 } 2352 2353 public void beginExternalDragShared(View child, DragSource source) { 2354 DeviceProfile grid = mLauncher.getDeviceProfile(); 2355 int iconSize = grid.iconSizePx; 2356 2357 // Notify launcher of drag start 2358 mLauncher.onDragStarted(child); 2359 2360 // Compose a new drag bitmap that is of the icon size 2361 AtomicInteger padding = new AtomicInteger(DRAG_BITMAP_PADDING); 2362 final Bitmap tmpB = createDragBitmap(child, padding); 2363 Bitmap b = Bitmap.createBitmap(iconSize, iconSize, Bitmap.Config.ARGB_8888); 2364 Paint p = new Paint(); 2365 p.setFilterBitmap(true); 2366 mCanvas.setBitmap(b); 2367 mCanvas.drawBitmap(tmpB, new Rect(0, 0, tmpB.getWidth(), tmpB.getHeight()), 2368 new Rect(0, 0, iconSize, iconSize), p); 2369 mCanvas.setBitmap(null); 2370 2371 // Find the child's location on the screen 2372 int bmpWidth = tmpB.getWidth(); 2373 float iconScale = (float) bmpWidth / iconSize; 2374 float scale = mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY) * iconScale; 2375 int dragLayerX = Math.round(mTempXY[0] - (bmpWidth - scale * child.getWidth()) / 2); 2376 int dragLayerY = Math.round(mTempXY[1]); 2377 2378 // Note: The drag region is used to calculate drag layer offsets, but the 2379 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 2380 Point dragVisualizeOffset = new Point(-padding.get() / 2, padding.get() / 2); 2381 Rect dragRect = new Rect(0, 0, iconSize, iconSize); 2382 2383 Object dragObject = child.getTag(); 2384 if (!(dragObject instanceof ItemInfo)) { 2385 String msg = "Drag started with a view that has no tag set. This " 2386 + "will cause a crash (issue 11627249) down the line. " 2387 + "View: " + child + " tag: " + child.getTag(); 2388 throw new IllegalStateException(msg); 2389 } 2390 2391 // Start the drag 2392 DragView dv = mDragController.startDrag(b, dragLayerX, dragLayerY, source, 2393 (ItemInfo) dragObject, DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, 2394 dragRect, scale, false); 2395 dv.setIntrinsicIconScaleFactor(source.getIntrinsicIconScaleFactor()); 2396 2397 // Recycle temporary bitmaps 2398 tmpB.recycle(); 2399 2400 mLauncher.enterSpringLoadedDragMode(); 2401 } 2402 2403 public boolean transitionStateShouldAllowDrop() { 2404 return ((!isSwitchingState() || mTransitionProgress > 0.5f) && 2405 (mState == State.NORMAL || mState == State.SPRING_LOADED)); 2406 } 2407 2408 /** 2409 * {@inheritDoc} 2410 */ 2411 public boolean acceptDrop(DragObject d) { 2412 // If it's an external drop (e.g. from All Apps), check if it should be accepted 2413 CellLayout dropTargetLayout = mDropToLayout; 2414 if (d.dragSource != this) { 2415 // Don't accept the drop if we're not over a screen at time of drop 2416 if (dropTargetLayout == null) { 2417 return false; 2418 } 2419 if (!transitionStateShouldAllowDrop()) return false; 2420 2421 mDragViewVisualCenter = d.getVisualCenter(mDragViewVisualCenter); 2422 2423 // We want the point to be mapped to the dragTarget. 2424 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 2425 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2426 } else { 2427 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter); 2428 } 2429 2430 int spanX = 1; 2431 int spanY = 1; 2432 if (mDragInfo != null) { 2433 final CellLayout.CellInfo dragCellInfo = mDragInfo; 2434 spanX = dragCellInfo.spanX; 2435 spanY = dragCellInfo.spanY; 2436 } else { 2437 spanX = d.dragInfo.spanX; 2438 spanY = d.dragInfo.spanY; 2439 } 2440 2441 int minSpanX = spanX; 2442 int minSpanY = spanY; 2443 if (d.dragInfo instanceof PendingAddWidgetInfo) { 2444 minSpanX = ((PendingAddWidgetInfo) d.dragInfo).minSpanX; 2445 minSpanY = ((PendingAddWidgetInfo) d.dragInfo).minSpanY; 2446 } 2447 2448 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2449 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, dropTargetLayout, 2450 mTargetCell); 2451 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2452 mDragViewVisualCenter[1], mTargetCell); 2453 if (mCreateUserFolderOnDrop && willCreateUserFolder(d.dragInfo, 2454 dropTargetLayout, mTargetCell, distance, true)) { 2455 return true; 2456 } 2457 2458 if (mAddToExistingFolderOnDrop && willAddToExistingUserFolder(d.dragInfo, 2459 dropTargetLayout, mTargetCell, distance)) { 2460 return true; 2461 } 2462 2463 int[] resultSpan = new int[2]; 2464 mTargetCell = dropTargetLayout.performReorder((int) mDragViewVisualCenter[0], 2465 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2466 null, mTargetCell, resultSpan, CellLayout.MODE_ACCEPT_DROP); 2467 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2468 2469 // Don't accept the drop if there's no room for the item 2470 if (!foundCell) { 2471 // Don't show the message if we are dropping on the AllApps button and the hotseat 2472 // is full 2473 boolean isHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2474 if (mTargetCell != null && isHotseat) { 2475 Hotseat hotseat = mLauncher.getHotseat(); 2476 if (hotseat.isAllAppsButtonRank( 2477 hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { 2478 return false; 2479 } 2480 } 2481 2482 mLauncher.showOutOfSpaceMessage(isHotseat); 2483 return false; 2484 } 2485 } 2486 2487 long screenId = getIdForScreen(dropTargetLayout); 2488 if (screenId == EXTRA_EMPTY_SCREEN_ID) { 2489 commitExtraEmptyScreen(); 2490 } 2491 2492 return true; 2493 } 2494 2495 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, float 2496 distance, boolean considerTimeout) { 2497 if (distance > mMaxDistanceForFolderCreation) return false; 2498 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2499 2500 if (dropOverView != null) { 2501 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2502 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2503 return false; 2504 } 2505 } 2506 2507 boolean hasntMoved = false; 2508 if (mDragInfo != null) { 2509 hasntMoved = dropOverView == mDragInfo.cell; 2510 } 2511 2512 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2513 return false; 2514 } 2515 2516 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2517 boolean willBecomeShortcut = 2518 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2519 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2520 2521 return (aboveShortcut && willBecomeShortcut); 2522 } 2523 2524 boolean willAddToExistingUserFolder(ItemInfo dragInfo, CellLayout target, int[] targetCell, 2525 float distance) { 2526 if (distance > mMaxDistanceForFolderCreation) return false; 2527 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2528 2529 if (dropOverView != null) { 2530 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2531 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2532 return false; 2533 } 2534 } 2535 2536 if (dropOverView instanceof FolderIcon) { 2537 FolderIcon fi = (FolderIcon) dropOverView; 2538 if (fi.acceptDrop(dragInfo)) { 2539 return true; 2540 } 2541 } 2542 return false; 2543 } 2544 2545 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2546 int[] targetCell, float distance, boolean external, DragView dragView, 2547 Runnable postAnimationRunnable) { 2548 if (distance > mMaxDistanceForFolderCreation) return false; 2549 View v = target.getChildAt(targetCell[0], targetCell[1]); 2550 2551 boolean hasntMoved = false; 2552 if (mDragInfo != null) { 2553 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2554 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2555 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2556 } 2557 2558 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2559 mCreateUserFolderOnDrop = false; 2560 final long screenId = (targetCell == null) ? mDragInfo.screenId : getIdForScreen(target); 2561 2562 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2563 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2564 2565 if (aboveShortcut && willBecomeShortcut) { 2566 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2567 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2568 // if the drag started here, we need to remove it from the workspace 2569 if (!external) { 2570 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2571 } 2572 2573 Rect folderLocation = new Rect(); 2574 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2575 target.removeView(v); 2576 2577 FolderIcon fi = 2578 mLauncher.addFolder(target, container, screenId, targetCell[0], targetCell[1]); 2579 destInfo.cellX = -1; 2580 destInfo.cellY = -1; 2581 sourceInfo.cellX = -1; 2582 sourceInfo.cellY = -1; 2583 2584 // If the dragView is null, we can't animate 2585 boolean animate = dragView != null; 2586 if (animate) { 2587 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2588 postAnimationRunnable); 2589 } else { 2590 fi.addItem(destInfo); 2591 fi.addItem(sourceInfo); 2592 } 2593 return true; 2594 } 2595 return false; 2596 } 2597 2598 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2599 float distance, DragObject d, boolean external) { 2600 if (distance > mMaxDistanceForFolderCreation) return false; 2601 2602 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2603 if (!mAddToExistingFolderOnDrop) return false; 2604 mAddToExistingFolderOnDrop = false; 2605 2606 if (dropOverView instanceof FolderIcon) { 2607 FolderIcon fi = (FolderIcon) dropOverView; 2608 if (fi.acceptDrop(d.dragInfo)) { 2609 fi.onDrop(d); 2610 2611 // if the drag started here, we need to remove it from the workspace 2612 if (!external) { 2613 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2614 } 2615 return true; 2616 } 2617 } 2618 return false; 2619 } 2620 2621 @Override 2622 public void prepareAccessibilityDrop() { } 2623 2624 public void onDrop(final DragObject d) { 2625 mDragViewVisualCenter = d.getVisualCenter(mDragViewVisualCenter); 2626 CellLayout dropTargetLayout = mDropToLayout; 2627 2628 // We want the point to be mapped to the dragTarget. 2629 if (dropTargetLayout != null) { 2630 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 2631 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2632 } else { 2633 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter); 2634 } 2635 } 2636 2637 int snapScreen = -1; 2638 boolean resizeOnDrop = false; 2639 if (d.dragSource != this) { 2640 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2641 (int) mDragViewVisualCenter[1] }; 2642 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2643 } else if (mDragInfo != null) { 2644 final View cell = mDragInfo.cell; 2645 2646 Runnable resizeRunnable = null; 2647 if (dropTargetLayout != null && !d.cancelled) { 2648 // Move internally 2649 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2650 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2651 long container = hasMovedIntoHotseat ? 2652 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2653 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2654 long screenId = (mTargetCell[0] < 0) ? 2655 mDragInfo.screenId : getIdForScreen(dropTargetLayout); 2656 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2657 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2658 // First we find the cell nearest to point at which the item is 2659 // dropped, without any consideration to whether there is an item there. 2660 2661 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2662 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2663 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2664 mDragViewVisualCenter[1], mTargetCell); 2665 2666 // If the item being dropped is a shortcut and the nearest drop 2667 // cell also contains a shortcut, then create a folder with the two shortcuts. 2668 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2669 dropTargetLayout, mTargetCell, distance, false, d.dragView, null)) { 2670 return; 2671 } 2672 2673 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, 2674 distance, d, false)) { 2675 return; 2676 } 2677 2678 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2679 // we need to find the nearest cell location that is vacant 2680 ItemInfo item = d.dragInfo; 2681 int minSpanX = item.spanX; 2682 int minSpanY = item.spanY; 2683 if (item.minSpanX > 0 && item.minSpanY > 0) { 2684 minSpanX = item.minSpanX; 2685 minSpanY = item.minSpanY; 2686 } 2687 2688 int[] resultSpan = new int[2]; 2689 mTargetCell = dropTargetLayout.performReorder((int) mDragViewVisualCenter[0], 2690 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, cell, 2691 mTargetCell, resultSpan, CellLayout.MODE_ON_DROP); 2692 2693 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2694 2695 // if the widget resizes on drop 2696 if (foundCell && (cell instanceof AppWidgetHostView) && 2697 (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY)) { 2698 resizeOnDrop = true; 2699 item.spanX = resultSpan[0]; 2700 item.spanY = resultSpan[1]; 2701 AppWidgetHostView awhv = (AppWidgetHostView) cell; 2702 AppWidgetResizeFrame.updateWidgetSizeRanges(awhv, mLauncher, resultSpan[0], 2703 resultSpan[1]); 2704 } 2705 2706 if (getScreenIdForPageIndex(mCurrentPage) != screenId && !hasMovedIntoHotseat) { 2707 snapScreen = getPageIndexForScreenId(screenId); 2708 snapToPage(snapScreen); 2709 } 2710 2711 if (foundCell) { 2712 final ItemInfo info = (ItemInfo) cell.getTag(); 2713 if (hasMovedLayouts) { 2714 // Reparent the view 2715 CellLayout parentCell = getParentCellLayoutForView(cell); 2716 if (parentCell != null) { 2717 parentCell.removeView(cell); 2718 } else if (ProviderConfig.IS_DOGFOOD_BUILD) { 2719 throw new NullPointerException("mDragInfo.cell has null parent"); 2720 } 2721 addInScreen(cell, container, screenId, mTargetCell[0], mTargetCell[1], 2722 info.spanX, info.spanY); 2723 } 2724 2725 // update the item's position after drop 2726 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2727 lp.cellX = lp.tmpCellX = mTargetCell[0]; 2728 lp.cellY = lp.tmpCellY = mTargetCell[1]; 2729 lp.cellHSpan = item.spanX; 2730 lp.cellVSpan = item.spanY; 2731 lp.isLockedToGrid = true; 2732 2733 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2734 cell instanceof LauncherAppWidgetHostView) { 2735 final CellLayout cellLayout = dropTargetLayout; 2736 // We post this call so that the widget has a chance to be placed 2737 // in its final location 2738 2739 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2740 AppWidgetProviderInfo pInfo = hostView.getAppWidgetInfo(); 2741 if (pInfo != null && pInfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE 2742 && !d.accessibleDrag) { 2743 final Runnable addResizeFrame = new Runnable() { 2744 public void run() { 2745 DragLayer dragLayer = mLauncher.getDragLayer(); 2746 dragLayer.addResizeFrame(info, hostView, cellLayout); 2747 } 2748 }; 2749 resizeRunnable = (new Runnable() { 2750 public void run() { 2751 if (!isPageMoving()) { 2752 addResizeFrame.run(); 2753 } else { 2754 mDelayedResizeRunnable = addResizeFrame; 2755 } 2756 } 2757 }); 2758 } 2759 } 2760 2761 LauncherModel.modifyItemInDatabase(mLauncher, info, container, screenId, lp.cellX, 2762 lp.cellY, item.spanX, item.spanY); 2763 } else { 2764 // If we can't find a drop location, we return the item to its original position 2765 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2766 mTargetCell[0] = lp.cellX; 2767 mTargetCell[1] = lp.cellY; 2768 CellLayout layout = (CellLayout) cell.getParent().getParent(); 2769 layout.markCellsAsOccupiedForView(cell); 2770 } 2771 } 2772 2773 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2774 final Runnable finalResizeRunnable = resizeRunnable; 2775 // Prepare it to be animated into its new position 2776 // This must be called after the view has been re-parented 2777 final Runnable onCompleteRunnable = new Runnable() { 2778 @Override 2779 public void run() { 2780 mAnimatingViewIntoPlace = false; 2781 updateChildrenLayersEnabled(false); 2782 if (finalResizeRunnable != null) { 2783 finalResizeRunnable.run(); 2784 } 2785 } 2786 }; 2787 mAnimatingViewIntoPlace = true; 2788 if (d.dragView.hasDrawn()) { 2789 final ItemInfo info = (ItemInfo) cell.getTag(); 2790 boolean isWidget = info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET 2791 || info.itemType == LauncherSettings.Favorites.ITEM_TYPE_CUSTOM_APPWIDGET; 2792 if (isWidget) { 2793 int animationType = resizeOnDrop ? ANIMATE_INTO_POSITION_AND_RESIZE : 2794 ANIMATE_INTO_POSITION_AND_DISAPPEAR; 2795 animateWidgetDrop(info, parent, d.dragView, 2796 onCompleteRunnable, animationType, cell, false); 2797 } else { 2798 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2799 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2800 onCompleteRunnable, this); 2801 } 2802 } else { 2803 d.deferDragViewCleanupPostAnimation = false; 2804 cell.setVisibility(VISIBLE); 2805 } 2806 parent.onDropChild(cell); 2807 } 2808 } 2809 2810 /** 2811 * Computes the area relative to dragLayer which is used to display a page. 2812 */ 2813 public void getPageAreaRelativeToDragLayer(Rect outArea) { 2814 CellLayout child = (CellLayout) getChildAt(getNextPage()); 2815 if (child == null) { 2816 return; 2817 } 2818 ShortcutAndWidgetContainer boundingLayout = child.getShortcutsAndWidgets(); 2819 2820 // Use the absolute left instead of the child left, as we want the visible area 2821 // irrespective of the visible child. Since the view can only scroll horizontally, the 2822 // top position is not affected. 2823 mTempXY[0] = getViewportOffsetX() + getPaddingLeft() + boundingLayout.getLeft(); 2824 mTempXY[1] = child.getTop() + boundingLayout.getTop(); 2825 2826 float scale = mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(this, mTempXY); 2827 outArea.set(mTempXY[0], mTempXY[1], 2828 (int) (mTempXY[0] + scale * boundingLayout.getMeasuredWidth()), 2829 (int) (mTempXY[1] + scale * boundingLayout.getMeasuredHeight())); 2830 } 2831 2832 public void getViewLocationRelativeToSelf(View v, int[] location) { 2833 getLocationInWindow(location); 2834 int x = location[0]; 2835 int y = location[1]; 2836 2837 v.getLocationInWindow(location); 2838 int vX = location[0]; 2839 int vY = location[1]; 2840 2841 location[0] = vX - x; 2842 location[1] = vY - y; 2843 } 2844 2845 @Override 2846 public void onDragEnter(DragObject d) { 2847 if (ENFORCE_DRAG_EVENT_ORDER) { 2848 enfoceDragParity("onDragEnter", 1, 1); 2849 } 2850 2851 mCreateUserFolderOnDrop = false; 2852 mAddToExistingFolderOnDrop = false; 2853 2854 mDropToLayout = null; 2855 CellLayout layout = getCurrentDropLayout(); 2856 setCurrentDropLayout(layout); 2857 setCurrentDragOverlappingLayout(layout); 2858 } 2859 2860 @Override 2861 public void onDragExit(DragObject d) { 2862 if (ENFORCE_DRAG_EVENT_ORDER) { 2863 enfoceDragParity("onDragExit", -1, 0); 2864 } 2865 2866 // Here we store the final page that will be dropped to, if the workspace in fact 2867 // receives the drop 2868 if (mInScrollArea) { 2869 if (isPageMoving()) { 2870 // If the user drops while the page is scrolling, we should use that page as the 2871 // destination instead of the page that is being hovered over. 2872 mDropToLayout = (CellLayout) getPageAt(getNextPage()); 2873 } else { 2874 mDropToLayout = mDragOverlappingLayout; 2875 } 2876 } else { 2877 mDropToLayout = mDragTargetLayout; 2878 } 2879 2880 if (mDragMode == DRAG_MODE_CREATE_FOLDER) { 2881 mCreateUserFolderOnDrop = true; 2882 } else if (mDragMode == DRAG_MODE_ADD_TO_FOLDER) { 2883 mAddToExistingFolderOnDrop = true; 2884 } 2885 2886 // Reset the scroll area and previous drag target 2887 onResetScrollArea(); 2888 setCurrentDropLayout(null); 2889 setCurrentDragOverlappingLayout(null); 2890 2891 mSpringLoadedDragController.cancel(); 2892 } 2893 2894 private void enfoceDragParity(String event, int update, int expectedValue) { 2895 enfoceDragParity(this, event, update, expectedValue); 2896 for (int i = 0; i < getChildCount(); i++) { 2897 enfoceDragParity(getChildAt(i), event, update, expectedValue); 2898 } 2899 } 2900 2901 private void enfoceDragParity(View v, String event, int update, int expectedValue) { 2902 Object tag = v.getTag(R.id.drag_event_parity); 2903 int value = tag == null ? 0 : (Integer) tag; 2904 value += update; 2905 v.setTag(R.id.drag_event_parity, value); 2906 2907 if (value != expectedValue) { 2908 Log.e(TAG, event + ": Drag contract violated: " + value); 2909 } 2910 } 2911 2912 void setCurrentDropLayout(CellLayout layout) { 2913 if (mDragTargetLayout != null) { 2914 mDragTargetLayout.revertTempState(); 2915 mDragTargetLayout.onDragExit(); 2916 } 2917 mDragTargetLayout = layout; 2918 if (mDragTargetLayout != null) { 2919 mDragTargetLayout.onDragEnter(); 2920 } 2921 cleanupReorder(true); 2922 cleanupFolderCreation(); 2923 setCurrentDropOverCell(-1, -1); 2924 } 2925 2926 void setCurrentDragOverlappingLayout(CellLayout layout) { 2927 if (mDragOverlappingLayout != null) { 2928 mDragOverlappingLayout.setIsDragOverlapping(false); 2929 } 2930 mDragOverlappingLayout = layout; 2931 if (mDragOverlappingLayout != null) { 2932 mDragOverlappingLayout.setIsDragOverlapping(true); 2933 } 2934 invalidate(); 2935 } 2936 2937 void setCurrentDropOverCell(int x, int y) { 2938 if (x != mDragOverX || y != mDragOverY) { 2939 mDragOverX = x; 2940 mDragOverY = y; 2941 setDragMode(DRAG_MODE_NONE); 2942 } 2943 } 2944 2945 void setDragMode(int dragMode) { 2946 if (dragMode != mDragMode) { 2947 if (dragMode == DRAG_MODE_NONE) { 2948 cleanupAddToFolder(); 2949 // We don't want to cancel the re-order alarm every time the target cell changes 2950 // as this feels to slow / unresponsive. 2951 cleanupReorder(false); 2952 cleanupFolderCreation(); 2953 } else if (dragMode == DRAG_MODE_ADD_TO_FOLDER) { 2954 cleanupReorder(true); 2955 cleanupFolderCreation(); 2956 } else if (dragMode == DRAG_MODE_CREATE_FOLDER) { 2957 cleanupAddToFolder(); 2958 cleanupReorder(true); 2959 } else if (dragMode == DRAG_MODE_REORDER) { 2960 cleanupAddToFolder(); 2961 cleanupFolderCreation(); 2962 } 2963 mDragMode = dragMode; 2964 } 2965 } 2966 2967 private void cleanupFolderCreation() { 2968 if (mDragFolderRingAnimator != null) { 2969 mDragFolderRingAnimator.animateToNaturalState(); 2970 mDragFolderRingAnimator = null; 2971 } 2972 mFolderCreationAlarm.setOnAlarmListener(null); 2973 mFolderCreationAlarm.cancelAlarm(); 2974 } 2975 2976 private void cleanupAddToFolder() { 2977 if (mDragOverFolderIcon != null) { 2978 mDragOverFolderIcon.onDragExit(null); 2979 mDragOverFolderIcon = null; 2980 } 2981 } 2982 2983 private void cleanupReorder(boolean cancelAlarm) { 2984 // Any pending reorders are canceled 2985 if (cancelAlarm) { 2986 mReorderAlarm.cancelAlarm(); 2987 } 2988 mLastReorderX = -1; 2989 mLastReorderY = -1; 2990 } 2991 2992 /* 2993 * 2994 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2995 * coordinate space. The argument xy is modified with the return result. 2996 */ 2997 void mapPointFromSelfToChild(View v, float[] xy) { 2998 xy[0] = xy[0] - v.getLeft(); 2999 xy[1] = xy[1] - v.getTop(); 3000 } 3001 3002 boolean isPointInSelfOverHotseat(int x, int y) { 3003 mTempXY[0] = x; 3004 mTempXY[1] = y; 3005 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(this, mTempXY, true); 3006 return mLauncher.getDeviceProfile().isInHotseatRect(mTempXY[0], mTempXY[1]); 3007 } 3008 3009 void mapPointFromSelfToHotseatLayout(Hotseat hotseat, float[] xy) { 3010 mTempXY[0] = (int) xy[0]; 3011 mTempXY[1] = (int) xy[1]; 3012 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(this, mTempXY, true); 3013 mLauncher.getDragLayer().mapCoordInSelfToDescendent(hotseat.getLayout(), mTempXY); 3014 3015 xy[0] = mTempXY[0]; 3016 xy[1] = mTempXY[1]; 3017 } 3018 3019 /* 3020 * 3021 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 3022 * the parent View's coordinate space. The argument xy is modified with the return result. 3023 * 3024 */ 3025 void mapPointFromChildToSelf(View v, float[] xy) { 3026 xy[0] += v.getLeft(); 3027 xy[1] += v.getTop(); 3028 } 3029 3030 static private float squaredDistance(float[] point1, float[] point2) { 3031 float distanceX = point1[0] - point2[0]; 3032 float distanceY = point2[1] - point2[1]; 3033 return distanceX * distanceX + distanceY * distanceY; 3034 } 3035 3036 /* 3037 * 3038 * This method returns the CellLayout that is currently being dragged to. In order to drag 3039 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 3040 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 3041 * 3042 * Return null if no CellLayout is currently being dragged over 3043 * 3044 */ 3045 private CellLayout findMatchingPageForDragOver( 3046 DragView dragView, float originX, float originY, boolean exact) { 3047 // We loop through all the screens (ie CellLayouts) and see which ones overlap 3048 // with the item being dragged and then choose the one that's closest to the touch point 3049 final int screenCount = getChildCount(); 3050 CellLayout bestMatchingScreen = null; 3051 float smallestDistSoFar = Float.MAX_VALUE; 3052 3053 for (int i = 0; i < screenCount; i++) { 3054 // The custom content screen is not a valid drag over option 3055 if (mScreenOrder.get(i) == CUSTOM_CONTENT_SCREEN_ID) { 3056 continue; 3057 } 3058 3059 CellLayout cl = (CellLayout) getChildAt(i); 3060 3061 final float[] touchXy = {originX, originY}; 3062 mapPointFromSelfToChild(cl, touchXy); 3063 3064 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 3065 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 3066 return cl; 3067 } 3068 3069 if (!exact) { 3070 // Get the center of the cell layout in screen coordinates 3071 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 3072 cellLayoutCenter[0] = cl.getWidth()/2; 3073 cellLayoutCenter[1] = cl.getHeight()/2; 3074 mapPointFromChildToSelf(cl, cellLayoutCenter); 3075 3076 touchXy[0] = originX; 3077 touchXy[1] = originY; 3078 3079 // Calculate the distance between the center of the CellLayout 3080 // and the touch point 3081 float dist = squaredDistance(touchXy, cellLayoutCenter); 3082 3083 if (dist < smallestDistSoFar) { 3084 smallestDistSoFar = dist; 3085 bestMatchingScreen = cl; 3086 } 3087 } 3088 } 3089 return bestMatchingScreen; 3090 } 3091 3092 private boolean isDragWidget(DragObject d) { 3093 return (d.dragInfo instanceof LauncherAppWidgetInfo || 3094 d.dragInfo instanceof PendingAddWidgetInfo); 3095 } 3096 private boolean isExternalDragWidget(DragObject d) { 3097 return d.dragSource != this && isDragWidget(d); 3098 } 3099 3100 public void onDragOver(DragObject d) { 3101 // Skip drag over events while we are dragging over side pages 3102 if (mInScrollArea || !transitionStateShouldAllowDrop()) return; 3103 3104 CellLayout layout = null; 3105 ItemInfo item = d.dragInfo; 3106 if (item == null) { 3107 if (ProviderConfig.IS_DOGFOOD_BUILD) { 3108 throw new NullPointerException("DragObject has null info"); 3109 } 3110 return; 3111 } 3112 3113 // Ensure that we have proper spans for the item that we are dropping 3114 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 3115 mDragViewVisualCenter = d.getVisualCenter(mDragViewVisualCenter); 3116 3117 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 3118 // Identify whether we have dragged over a side page 3119 if (workspaceInModalState()) { 3120 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 3121 if (isPointInSelfOverHotseat(d.x, d.y)) { 3122 layout = mLauncher.getHotseat().getLayout(); 3123 } 3124 } 3125 if (layout == null) { 3126 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false); 3127 } 3128 if (layout != mDragTargetLayout) { 3129 setCurrentDropLayout(layout); 3130 setCurrentDragOverlappingLayout(layout); 3131 3132 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 3133 if (isInSpringLoadedMode) { 3134 if (mLauncher.isHotseatLayout(layout)) { 3135 mSpringLoadedDragController.cancel(); 3136 } else { 3137 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 3138 } 3139 } 3140 } 3141 } else { 3142 // Test to see if we are over the hotseat otherwise just use the current page 3143 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 3144 if (isPointInSelfOverHotseat(d.x, d.y)) { 3145 layout = mLauncher.getHotseat().getLayout(); 3146 } 3147 } 3148 if (layout == null) { 3149 layout = getCurrentDropLayout(); 3150 } 3151 if (layout != mDragTargetLayout) { 3152 setCurrentDropLayout(layout); 3153 setCurrentDragOverlappingLayout(layout); 3154 } 3155 } 3156 3157 // Handle the drag over 3158 if (mDragTargetLayout != null) { 3159 // We want the point to be mapped to the dragTarget. 3160 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 3161 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 3162 } else { 3163 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter); 3164 } 3165 3166 ItemInfo info = d.dragInfo; 3167 3168 int minSpanX = item.spanX; 3169 int minSpanY = item.spanY; 3170 if (item.minSpanX > 0 && item.minSpanY > 0) { 3171 minSpanX = item.minSpanX; 3172 minSpanY = item.minSpanY; 3173 } 3174 3175 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 3176 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, 3177 mDragTargetLayout, mTargetCell); 3178 int reorderX = mTargetCell[0]; 3179 int reorderY = mTargetCell[1]; 3180 3181 setCurrentDropOverCell(mTargetCell[0], mTargetCell[1]); 3182 3183 float targetCellDistance = mDragTargetLayout.getDistanceFromCell( 3184 mDragViewVisualCenter[0], mDragViewVisualCenter[1], mTargetCell); 3185 3186 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 3187 mTargetCell[1]); 3188 3189 manageFolderFeedback(info, mDragTargetLayout, mTargetCell, 3190 targetCellDistance, dragOverView, d.accessibleDrag); 3191 3192 boolean nearestDropOccupied = mDragTargetLayout.isNearestDropLocationOccupied((int) 3193 mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], item.spanX, 3194 item.spanY, child, mTargetCell); 3195 3196 if (!nearestDropOccupied) { 3197 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 3198 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 3199 mTargetCell[0], mTargetCell[1], item.spanX, item.spanY, false, 3200 d.dragView.getDragVisualizeOffset(), d.dragView.getDragRegion()); 3201 } else if ((mDragMode == DRAG_MODE_NONE || mDragMode == DRAG_MODE_REORDER) 3202 && !mReorderAlarm.alarmPending() && (mLastReorderX != reorderX || 3203 mLastReorderY != reorderY)) { 3204 3205 int[] resultSpan = new int[2]; 3206 mDragTargetLayout.performReorder((int) mDragViewVisualCenter[0], 3207 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, item.spanX, item.spanY, 3208 child, mTargetCell, resultSpan, CellLayout.MODE_SHOW_REORDER_HINT); 3209 3210 // Otherwise, if we aren't adding to or creating a folder and there's no pending 3211 // reorder, then we schedule a reorder 3212 ReorderAlarmListener listener = new ReorderAlarmListener(mDragViewVisualCenter, 3213 minSpanX, minSpanY, item.spanX, item.spanY, d.dragView, child); 3214 mReorderAlarm.setOnAlarmListener(listener); 3215 mReorderAlarm.setAlarm(REORDER_TIMEOUT); 3216 } 3217 3218 if (mDragMode == DRAG_MODE_CREATE_FOLDER || mDragMode == DRAG_MODE_ADD_TO_FOLDER || 3219 !nearestDropOccupied) { 3220 if (mDragTargetLayout != null) { 3221 mDragTargetLayout.revertTempState(); 3222 } 3223 } 3224 } 3225 } 3226 3227 private void manageFolderFeedback(ItemInfo info, CellLayout targetLayout, 3228 int[] targetCell, float distance, View dragOverView, boolean accessibleDrag) { 3229 boolean userFolderPending = willCreateUserFolder(info, targetLayout, targetCell, distance, 3230 false); 3231 if (mDragMode == DRAG_MODE_NONE && userFolderPending && 3232 !mFolderCreationAlarm.alarmPending()) { 3233 3234 FolderCreationAlarmListener listener = new 3235 FolderCreationAlarmListener(targetLayout, targetCell[0], targetCell[1]); 3236 3237 if (!accessibleDrag) { 3238 mFolderCreationAlarm.setOnAlarmListener(listener); 3239 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 3240 } else { 3241 listener.onAlarm(mFolderCreationAlarm); 3242 } 3243 return; 3244 } 3245 3246 boolean willAddToFolder = 3247 willAddToExistingUserFolder(info, targetLayout, targetCell, distance); 3248 3249 if (willAddToFolder && mDragMode == DRAG_MODE_NONE) { 3250 mDragOverFolderIcon = ((FolderIcon) dragOverView); 3251 mDragOverFolderIcon.onDragEnter(info); 3252 if (targetLayout != null) { 3253 targetLayout.clearDragOutlines(); 3254 } 3255 setDragMode(DRAG_MODE_ADD_TO_FOLDER); 3256 return; 3257 } 3258 3259 if (mDragMode == DRAG_MODE_ADD_TO_FOLDER && !willAddToFolder) { 3260 setDragMode(DRAG_MODE_NONE); 3261 } 3262 if (mDragMode == DRAG_MODE_CREATE_FOLDER && !userFolderPending) { 3263 setDragMode(DRAG_MODE_NONE); 3264 } 3265 3266 return; 3267 } 3268 3269 class FolderCreationAlarmListener implements OnAlarmListener { 3270 CellLayout layout; 3271 int cellX; 3272 int cellY; 3273 3274 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 3275 this.layout = layout; 3276 this.cellX = cellX; 3277 this.cellY = cellY; 3278 } 3279 3280 public void onAlarm(Alarm alarm) { 3281 if (mDragFolderRingAnimator != null) { 3282 // This shouldn't happen ever, but just in case, make sure we clean up the mess. 3283 mDragFolderRingAnimator.animateToNaturalState(); 3284 } 3285 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 3286 mDragFolderRingAnimator.setCell(cellX, cellY); 3287 mDragFolderRingAnimator.setCellLayout(layout); 3288 mDragFolderRingAnimator.animateToAcceptState(); 3289 layout.showFolderAccept(mDragFolderRingAnimator); 3290 layout.clearDragOutlines(); 3291 setDragMode(DRAG_MODE_CREATE_FOLDER); 3292 } 3293 } 3294 3295 class ReorderAlarmListener implements OnAlarmListener { 3296 float[] dragViewCenter; 3297 int minSpanX, minSpanY, spanX, spanY; 3298 DragView dragView; 3299 View child; 3300 3301 public ReorderAlarmListener(float[] dragViewCenter, int minSpanX, int minSpanY, int spanX, 3302 int spanY, DragView dragView, View child) { 3303 this.dragViewCenter = dragViewCenter; 3304 this.minSpanX = minSpanX; 3305 this.minSpanY = minSpanY; 3306 this.spanX = spanX; 3307 this.spanY = spanY; 3308 this.child = child; 3309 this.dragView = dragView; 3310 } 3311 3312 public void onAlarm(Alarm alarm) { 3313 int[] resultSpan = new int[2]; 3314 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 3315 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, mDragTargetLayout, 3316 mTargetCell); 3317 mLastReorderX = mTargetCell[0]; 3318 mLastReorderY = mTargetCell[1]; 3319 3320 mTargetCell = mDragTargetLayout.performReorder((int) mDragViewVisualCenter[0], 3321 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 3322 child, mTargetCell, resultSpan, CellLayout.MODE_DRAG_OVER); 3323 3324 if (mTargetCell[0] < 0 || mTargetCell[1] < 0) { 3325 mDragTargetLayout.revertTempState(); 3326 } else { 3327 setDragMode(DRAG_MODE_REORDER); 3328 } 3329 3330 boolean resize = resultSpan[0] != spanX || resultSpan[1] != spanY; 3331 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 3332 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 3333 mTargetCell[0], mTargetCell[1], resultSpan[0], resultSpan[1], resize, 3334 dragView.getDragVisualizeOffset(), dragView.getDragRegion()); 3335 } 3336 } 3337 3338 @Override 3339 public void getHitRectRelativeToDragLayer(Rect outRect) { 3340 // We want the workspace to have the whole area of the display (it will find the correct 3341 // cell layout to drop to in the existing drag/drop logic. 3342 mLauncher.getDragLayer().getDescendantRectRelativeToSelf(this, outRect); 3343 } 3344 3345 /** 3346 * Drop an item that didn't originate on one of the workspace screens. 3347 * It may have come from Launcher (e.g. from all apps or customize), or it may have 3348 * come from another app altogether. 3349 * 3350 * NOTE: This can also be called when we are outside of a drag event, when we want 3351 * to add an item to one of the workspace screens. 3352 */ 3353 private void onDropExternal(final int[] touchXY, final ItemInfo dragInfo, 3354 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 3355 final Runnable exitSpringLoadedRunnable = new Runnable() { 3356 @Override 3357 public void run() { 3358 mLauncher.exitSpringLoadedDragModeDelayed(true, 3359 Launcher.EXIT_SPRINGLOADED_MODE_SHORT_TIMEOUT, null); 3360 } 3361 }; 3362 3363 ItemInfo info = dragInfo; 3364 int spanX = info.spanX; 3365 int spanY = info.spanY; 3366 if (mDragInfo != null) { 3367 spanX = mDragInfo.spanX; 3368 spanY = mDragInfo.spanY; 3369 } 3370 3371 final long container = mLauncher.isHotseatLayout(cellLayout) ? 3372 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 3373 LauncherSettings.Favorites.CONTAINER_DESKTOP; 3374 final long screenId = getIdForScreen(cellLayout); 3375 if (!mLauncher.isHotseatLayout(cellLayout) 3376 && screenId != getScreenIdForPageIndex(mCurrentPage) 3377 && mState != State.SPRING_LOADED) { 3378 snapToScreenId(screenId, null); 3379 } 3380 3381 if (info instanceof PendingAddItemInfo) { 3382 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 3383 3384 boolean findNearestVacantCell = true; 3385 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 3386 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3387 cellLayout, mTargetCell); 3388 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3389 mDragViewVisualCenter[1], mTargetCell); 3390 if (willCreateUserFolder(d.dragInfo, cellLayout, mTargetCell, distance, true) 3391 || willAddToExistingUserFolder( 3392 d.dragInfo, cellLayout, mTargetCell, distance)) { 3393 findNearestVacantCell = false; 3394 } 3395 } 3396 3397 final ItemInfo item = d.dragInfo; 3398 boolean updateWidgetSize = false; 3399 if (findNearestVacantCell) { 3400 int minSpanX = item.spanX; 3401 int minSpanY = item.spanY; 3402 if (item.minSpanX > 0 && item.minSpanY > 0) { 3403 minSpanX = item.minSpanX; 3404 minSpanY = item.minSpanY; 3405 } 3406 int[] resultSpan = new int[2]; 3407 mTargetCell = cellLayout.performReorder((int) mDragViewVisualCenter[0], 3408 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, info.spanX, info.spanY, 3409 null, mTargetCell, resultSpan, CellLayout.MODE_ON_DROP_EXTERNAL); 3410 3411 if (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY) { 3412 updateWidgetSize = true; 3413 } 3414 item.spanX = resultSpan[0]; 3415 item.spanY = resultSpan[1]; 3416 } 3417 3418 Runnable onAnimationCompleteRunnable = new Runnable() { 3419 @Override 3420 public void run() { 3421 // Normally removeExtraEmptyScreen is called in Workspace#onDragEnd, but when 3422 // adding an item that may not be dropped right away (due to a config activity) 3423 // we defer the removal until the activity returns. 3424 deferRemoveExtraEmptyScreen(); 3425 3426 // When dragging and dropping from customization tray, we deal with creating 3427 // widgets/shortcuts/folders in a slightly different way 3428 mLauncher.addPendingItem(pendingInfo, container, screenId, mTargetCell, 3429 item.spanX, item.spanY); 3430 } 3431 }; 3432 boolean isWidget = pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET 3433 || pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_CUSTOM_APPWIDGET; 3434 3435 View finalView = isWidget ? ((PendingAddWidgetInfo) pendingInfo).boundWidget : null; 3436 3437 if (finalView instanceof AppWidgetHostView && updateWidgetSize) { 3438 AppWidgetHostView awhv = (AppWidgetHostView) finalView; 3439 AppWidgetResizeFrame.updateWidgetSizeRanges(awhv, mLauncher, item.spanX, 3440 item.spanY); 3441 } 3442 3443 int animationStyle = ANIMATE_INTO_POSITION_AND_DISAPPEAR; 3444 if (isWidget && ((PendingAddWidgetInfo) pendingInfo).info != null && 3445 ((PendingAddWidgetInfo) pendingInfo).info.configure != null) { 3446 animationStyle = ANIMATE_INTO_POSITION_AND_REMAIN; 3447 } 3448 animateWidgetDrop(info, cellLayout, d.dragView, onAnimationCompleteRunnable, 3449 animationStyle, finalView, true); 3450 } else { 3451 // This is for other drag/drop cases, like dragging from All Apps 3452 View view = null; 3453 3454 switch (info.itemType) { 3455 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 3456 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3457 if (info.container == NO_ID && info instanceof AppInfo) { 3458 // Came from all apps -- make a copy 3459 info = ((AppInfo) info).makeShortcut(); 3460 } 3461 view = mLauncher.createShortcut(cellLayout, (ShortcutInfo) info); 3462 break; 3463 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 3464 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 3465 (FolderInfo) info, mIconCache); 3466 break; 3467 default: 3468 throw new IllegalStateException("Unknown item type: " + info.itemType); 3469 } 3470 3471 // First we find the cell nearest to point at which the item is 3472 // dropped, without any consideration to whether there is an item there. 3473 if (touchXY != null) { 3474 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3475 cellLayout, mTargetCell); 3476 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3477 mDragViewVisualCenter[1], mTargetCell); 3478 d.postAnimationRunnable = exitSpringLoadedRunnable; 3479 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, distance, 3480 true, d.dragView, d.postAnimationRunnable)) { 3481 return; 3482 } 3483 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, distance, d, 3484 true)) { 3485 return; 3486 } 3487 } 3488 3489 if (touchXY != null) { 3490 // when dragging and dropping, just find the closest free spot 3491 mTargetCell = cellLayout.performReorder((int) mDragViewVisualCenter[0], 3492 (int) mDragViewVisualCenter[1], 1, 1, 1, 1, 3493 null, mTargetCell, null, CellLayout.MODE_ON_DROP_EXTERNAL); 3494 } else { 3495 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3496 } 3497 // Add the item to DB before adding to screen ensures that the container and other 3498 // values of the info is properly updated. 3499 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screenId, 3500 mTargetCell[0], mTargetCell[1]); 3501 3502 addInScreen(view, container, screenId, mTargetCell[0], mTargetCell[1], info.spanX, 3503 info.spanY, insertAtFirst); 3504 cellLayout.onDropChild(view); 3505 cellLayout.getShortcutsAndWidgets().measureChild(view); 3506 3507 if (d.dragView != null) { 3508 // We wrap the animation call in the temporary set and reset of the current 3509 // cellLayout to its final transform -- this means we animate the drag view to 3510 // the correct final location. 3511 setFinalTransitionTransform(cellLayout); 3512 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 3513 exitSpringLoadedRunnable, this); 3514 resetTransitionTransform(cellLayout); 3515 } 3516 } 3517 } 3518 3519 public Bitmap createWidgetBitmap(ItemInfo widgetInfo, View layout) { 3520 int[] unScaledSize = mLauncher.getWorkspace().estimateItemSize(widgetInfo, false); 3521 int visibility = layout.getVisibility(); 3522 layout.setVisibility(VISIBLE); 3523 3524 int width = MeasureSpec.makeMeasureSpec(unScaledSize[0], MeasureSpec.EXACTLY); 3525 int height = MeasureSpec.makeMeasureSpec(unScaledSize[1], MeasureSpec.EXACTLY); 3526 Bitmap b = Bitmap.createBitmap(unScaledSize[0], unScaledSize[1], 3527 Bitmap.Config.ARGB_8888); 3528 mCanvas.setBitmap(b); 3529 3530 layout.measure(width, height); 3531 layout.layout(0, 0, unScaledSize[0], unScaledSize[1]); 3532 layout.draw(mCanvas); 3533 mCanvas.setBitmap(null); 3534 layout.setVisibility(visibility); 3535 return b; 3536 } 3537 3538 private void getFinalPositionForDropAnimation(int[] loc, float[] scaleXY, 3539 DragView dragView, CellLayout layout, ItemInfo info, int[] targetCell, 3540 boolean external, boolean scale) { 3541 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 3542 // location and size on the home screen. 3543 int spanX = info.spanX; 3544 int spanY = info.spanY; 3545 3546 Rect r = estimateItemPosition(layout, info, targetCell[0], targetCell[1], spanX, spanY); 3547 loc[0] = r.left; 3548 loc[1] = r.top; 3549 3550 setFinalTransitionTransform(layout); 3551 float cellLayoutScale = 3552 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(layout, loc, true); 3553 resetTransitionTransform(layout); 3554 3555 float dragViewScaleX; 3556 float dragViewScaleY; 3557 if (scale) { 3558 dragViewScaleX = (1.0f * r.width()) / dragView.getMeasuredWidth(); 3559 dragViewScaleY = (1.0f * r.height()) / dragView.getMeasuredHeight(); 3560 } else { 3561 dragViewScaleX = 1f; 3562 dragViewScaleY = 1f; 3563 } 3564 3565 // The animation will scale the dragView about its center, so we need to center about 3566 // the final location. 3567 loc[0] -= (dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 3568 loc[1] -= (dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 3569 3570 scaleXY[0] = dragViewScaleX * cellLayoutScale; 3571 scaleXY[1] = dragViewScaleY * cellLayoutScale; 3572 } 3573 3574 public void animateWidgetDrop(ItemInfo info, CellLayout cellLayout, DragView dragView, 3575 final Runnable onCompleteRunnable, int animationType, final View finalView, 3576 boolean external) { 3577 Rect from = new Rect(); 3578 mLauncher.getDragLayer().getViewRectRelativeToSelf(dragView, from); 3579 3580 int[] finalPos = new int[2]; 3581 float scaleXY[] = new float[2]; 3582 boolean scalePreview = !(info instanceof PendingAddShortcutInfo); 3583 getFinalPositionForDropAnimation(finalPos, scaleXY, dragView, cellLayout, info, mTargetCell, 3584 external, scalePreview); 3585 3586 Resources res = mLauncher.getResources(); 3587 final int duration = res.getInteger(R.integer.config_dropAnimMaxDuration) - 200; 3588 3589 // In the case where we've prebound the widget, we remove it from the DragLayer 3590 if (finalView instanceof AppWidgetHostView && external) { 3591 mLauncher.getDragLayer().removeView(finalView); 3592 } 3593 3594 boolean isWidget = info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET || 3595 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_CUSTOM_APPWIDGET; 3596 if ((animationType == ANIMATE_INTO_POSITION_AND_RESIZE || external) && finalView != null) { 3597 Bitmap crossFadeBitmap = createWidgetBitmap(info, finalView); 3598 dragView.setCrossFadeBitmap(crossFadeBitmap); 3599 dragView.crossFade((int) (duration * 0.8f)); 3600 } else if (isWidget && external) { 3601 scaleXY[0] = scaleXY[1] = Math.min(scaleXY[0], scaleXY[1]); 3602 } 3603 3604 DragLayer dragLayer = mLauncher.getDragLayer(); 3605 if (animationType == CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION) { 3606 mLauncher.getDragLayer().animateViewIntoPosition(dragView, finalPos, 0f, 0.1f, 0.1f, 3607 DragLayer.ANIMATION_END_DISAPPEAR, onCompleteRunnable, duration); 3608 } else { 3609 int endStyle; 3610 if (animationType == ANIMATE_INTO_POSITION_AND_REMAIN) { 3611 endStyle = DragLayer.ANIMATION_END_REMAIN_VISIBLE; 3612 } else { 3613 endStyle = DragLayer.ANIMATION_END_DISAPPEAR;; 3614 } 3615 3616 Runnable onComplete = new Runnable() { 3617 @Override 3618 public void run() { 3619 if (finalView != null) { 3620 finalView.setVisibility(VISIBLE); 3621 } 3622 if (onCompleteRunnable != null) { 3623 onCompleteRunnable.run(); 3624 } 3625 } 3626 }; 3627 dragLayer.animateViewIntoPosition(dragView, from.left, from.top, finalPos[0], 3628 finalPos[1], 1, 1, 1, scaleXY[0], scaleXY[1], onComplete, endStyle, 3629 duration, this); 3630 } 3631 } 3632 3633 public void setFinalTransitionTransform(CellLayout layout) { 3634 if (isSwitchingState()) { 3635 mCurrentScale = getScaleX(); 3636 setScaleX(mStateTransitionAnimation.getFinalScale()); 3637 setScaleY(mStateTransitionAnimation.getFinalScale()); 3638 } 3639 } 3640 public void resetTransitionTransform(CellLayout layout) { 3641 if (isSwitchingState()) { 3642 setScaleX(mCurrentScale); 3643 setScaleY(mCurrentScale); 3644 } 3645 } 3646 3647 /** 3648 * Return the current {@link CellLayout}, correctly picking the destination 3649 * screen while a scroll is in progress. 3650 */ 3651 public CellLayout getCurrentDropLayout() { 3652 return (CellLayout) getChildAt(getNextPage()); 3653 } 3654 3655 /** 3656 * Return the current CellInfo describing our current drag; this method exists 3657 * so that Launcher can sync this object with the correct info when the activity is created/ 3658 * destroyed 3659 * 3660 */ 3661 public CellLayout.CellInfo getDragInfo() { 3662 return mDragInfo; 3663 } 3664 3665 public int getCurrentPageOffsetFromCustomContent() { 3666 return getNextPage() - numCustomPages(); 3667 } 3668 3669 /** 3670 * Calculate the nearest cell where the given object would be dropped. 3671 * 3672 * pixelX and pixelY should be in the coordinate system of layout 3673 */ 3674 @Thunk int[] findNearestArea(int pixelX, int pixelY, 3675 int spanX, int spanY, CellLayout layout, int[] recycle) { 3676 return layout.findNearestArea( 3677 pixelX, pixelY, spanX, spanY, recycle); 3678 } 3679 3680 void setup(DragController dragController) { 3681 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3682 mDragController = dragController; 3683 3684 // hardware layers on children are enabled on startup, but should be disabled until 3685 // needed 3686 updateChildrenLayersEnabled(false); 3687 } 3688 3689 /** 3690 * Called at the end of a drag which originated on the workspace. 3691 */ 3692 public void onDropCompleted(final View target, final DragObject d, 3693 final boolean isFlingToDelete, final boolean success) { 3694 if (mDeferDropAfterUninstall) { 3695 mDeferredAction = new Runnable() { 3696 public void run() { 3697 onDropCompleted(target, d, isFlingToDelete, success); 3698 mDeferredAction = null; 3699 } 3700 }; 3701 return; 3702 } 3703 3704 boolean beingCalledAfterUninstall = mDeferredAction != null; 3705 3706 if (success && !(beingCalledAfterUninstall && !mUninstallSuccessful)) { 3707 if (target != this && mDragInfo != null) { 3708 removeWorkspaceItem(mDragInfo.cell); 3709 } 3710 } else if (mDragInfo != null) { 3711 final CellLayout cellLayout = mLauncher.getCellLayout( 3712 mDragInfo.container, mDragInfo.screenId); 3713 if (cellLayout != null) { 3714 cellLayout.onDropChild(mDragInfo.cell); 3715 } else if (ProviderConfig.IS_DOGFOOD_BUILD) { 3716 throw new RuntimeException("Invalid state: cellLayout == null in " 3717 + "Workspace#onDropCompleted. Please file a bug. "); 3718 }; 3719 } 3720 if ((d.cancelled || (beingCalledAfterUninstall && !mUninstallSuccessful)) 3721 && mDragInfo.cell != null) { 3722 mDragInfo.cell.setVisibility(VISIBLE); 3723 } 3724 mDragOutline = null; 3725 mDragInfo = null; 3726 3727 mLauncher.exitSpringLoadedDragModeDelayed(success, 3728 Launcher.EXIT_SPRINGLOADED_MODE_SHORT_TIMEOUT, null); 3729 } 3730 3731 /** 3732 * For opposite operation. See {@link #addInScreen}. 3733 */ 3734 public void removeWorkspaceItem(View v) { 3735 CellLayout parentCell = getParentCellLayoutForView(v); 3736 if (parentCell != null) { 3737 parentCell.removeView(v); 3738 } else if (ProviderConfig.IS_DOGFOOD_BUILD) { 3739 // When an app is uninstalled using the drop target, we wait until resume to remove 3740 // the icon. We also remove all the corresponding items from the workspace at 3741 // {@link Launcher#bindComponentsRemoved}. That call can come before or after 3742 // {@link Launcher#mOnResumeCallbacks} depending on how busy the worker thread is. 3743 Log.e(TAG, "mDragInfo.cell has null parent"); 3744 } 3745 if (v instanceof DropTarget) { 3746 mDragController.removeDropTarget((DropTarget) v); 3747 } 3748 } 3749 3750 @Override 3751 public void deferCompleteDropAfterUninstallActivity() { 3752 mDeferDropAfterUninstall = true; 3753 } 3754 3755 /// maybe move this into a smaller part 3756 @Override 3757 public void onUninstallActivityReturned(boolean success) { 3758 mDeferDropAfterUninstall = false; 3759 mUninstallSuccessful = success; 3760 if (mDeferredAction != null) { 3761 mDeferredAction.run(); 3762 } 3763 } 3764 3765 void saveWorkspaceToDb() { 3766 saveWorkspaceScreenToDb((CellLayout) mLauncher.getHotseat().getLayout()); 3767 int count = getChildCount(); 3768 for (int i = 0; i < count; i++) { 3769 CellLayout cl = (CellLayout) getChildAt(i); 3770 saveWorkspaceScreenToDb(cl); 3771 } 3772 } 3773 3774 void saveWorkspaceScreenToDb(CellLayout cl) { 3775 int count = cl.getShortcutsAndWidgets().getChildCount(); 3776 3777 long screenId = getIdForScreen(cl); 3778 int container = Favorites.CONTAINER_DESKTOP; 3779 3780 Hotseat hotseat = mLauncher.getHotseat(); 3781 if (mLauncher.isHotseatLayout(cl)) { 3782 screenId = -1; 3783 container = Favorites.CONTAINER_HOTSEAT; 3784 } 3785 3786 for (int i = 0; i < count; i++) { 3787 View v = cl.getShortcutsAndWidgets().getChildAt(i); 3788 ItemInfo info = (ItemInfo) v.getTag(); 3789 // Null check required as the AllApps button doesn't have an item info 3790 if (info != null) { 3791 int cellX = info.cellX; 3792 int cellY = info.cellY; 3793 if (container == Favorites.CONTAINER_HOTSEAT) { 3794 cellX = hotseat.getCellXFromOrder((int) info.screenId); 3795 cellY = hotseat.getCellYFromOrder((int) info.screenId); 3796 } 3797 LauncherModel.addItemToDatabase(mLauncher, info, container, screenId, cellX, cellY); 3798 } 3799 if (v instanceof FolderIcon) { 3800 FolderIcon fi = (FolderIcon) v; 3801 fi.getFolder().addItemLocationsInDatabase(); 3802 } 3803 } 3804 } 3805 3806 @Override 3807 public float getIntrinsicIconScaleFactor() { 3808 return 1f; 3809 } 3810 3811 @Override 3812 public boolean supportsFlingToDelete() { 3813 return true; 3814 } 3815 3816 @Override 3817 public boolean supportsAppInfoDropTarget() { 3818 return true; 3819 } 3820 3821 @Override 3822 public boolean supportsDeleteDropTarget() { 3823 return true; 3824 } 3825 3826 @Override 3827 public void onFlingToDelete(DragObject d, PointF vec) { 3828 // Do nothing 3829 } 3830 3831 @Override 3832 public void onFlingToDeleteCompleted() { 3833 // Do nothing 3834 } 3835 3836 public boolean isDropEnabled() { 3837 return true; 3838 } 3839 3840 @Override 3841 protected void dispatchRestoreInstanceState(SparseArray<Parcelable> container) { 3842 // We don't dispatch restoreInstanceState to our children using this code path. 3843 // Some pages will be restored immediately as their items are bound immediately, and 3844 // others we will need to wait until after their items are bound. 3845 mSavedStates = container; 3846 } 3847 3848 public void restoreInstanceStateForChild(int child) { 3849 if (mSavedStates != null) { 3850 mRestoredPages.add(child); 3851 CellLayout cl = (CellLayout) getChildAt(child); 3852 if (cl != null) { 3853 cl.restoreInstanceState(mSavedStates); 3854 } 3855 } 3856 } 3857 3858 public void restoreInstanceStateForRemainingPages() { 3859 int count = getChildCount(); 3860 for (int i = 0; i < count; i++) { 3861 if (!mRestoredPages.contains(i)) { 3862 restoreInstanceStateForChild(i); 3863 } 3864 } 3865 mRestoredPages.clear(); 3866 mSavedStates = null; 3867 } 3868 3869 @Override 3870 public void scrollLeft() { 3871 if (!workspaceInModalState() && !mIsSwitchingState) { 3872 super.scrollLeft(); 3873 } 3874 Folder openFolder = getOpenFolder(); 3875 if (openFolder != null) { 3876 openFolder.completeDragExit(); 3877 } 3878 } 3879 3880 @Override 3881 public void scrollRight() { 3882 if (!workspaceInModalState() && !mIsSwitchingState) { 3883 super.scrollRight(); 3884 } 3885 Folder openFolder = getOpenFolder(); 3886 if (openFolder != null) { 3887 openFolder.completeDragExit(); 3888 } 3889 } 3890 3891 @Override 3892 public boolean onEnterScrollArea(int x, int y, int direction) { 3893 // Ignore the scroll area if we are dragging over the hot seat 3894 boolean isPortrait = !mLauncher.getDeviceProfile().isLandscape; 3895 if (mLauncher.getHotseat() != null && isPortrait) { 3896 Rect r = new Rect(); 3897 mLauncher.getHotseat().getHitRect(r); 3898 if (r.contains(x, y)) { 3899 return false; 3900 } 3901 } 3902 3903 boolean result = false; 3904 if (!workspaceInModalState() && !mIsSwitchingState && getOpenFolder() == null) { 3905 mInScrollArea = true; 3906 3907 final int page = getNextPage() + 3908 (direction == DragController.SCROLL_LEFT ? -1 : 1); 3909 // We always want to exit the current layout to ensure parity of enter / exit 3910 setCurrentDropLayout(null); 3911 3912 if (0 <= page && page < getChildCount()) { 3913 // Ensure that we are not dragging over to the custom content screen 3914 if (getScreenIdForPageIndex(page) == CUSTOM_CONTENT_SCREEN_ID) { 3915 return false; 3916 } 3917 3918 CellLayout layout = (CellLayout) getChildAt(page); 3919 setCurrentDragOverlappingLayout(layout); 3920 3921 // Workspace is responsible for drawing the edge glow on adjacent pages, 3922 // so we need to redraw the workspace when this may have changed. 3923 invalidate(); 3924 result = true; 3925 } 3926 } 3927 return result; 3928 } 3929 3930 @Override 3931 public boolean onExitScrollArea() { 3932 boolean result = false; 3933 if (mInScrollArea) { 3934 invalidate(); 3935 CellLayout layout = getCurrentDropLayout(); 3936 setCurrentDropLayout(layout); 3937 setCurrentDragOverlappingLayout(layout); 3938 3939 result = true; 3940 mInScrollArea = false; 3941 } 3942 return result; 3943 } 3944 3945 private void onResetScrollArea() { 3946 setCurrentDragOverlappingLayout(null); 3947 mInScrollArea = false; 3948 } 3949 3950 /** 3951 * Returns a specific CellLayout 3952 */ 3953 CellLayout getParentCellLayoutForView(View v) { 3954 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3955 for (CellLayout layout : layouts) { 3956 if (layout.getShortcutsAndWidgets().indexOfChild(v) > -1) { 3957 return layout; 3958 } 3959 } 3960 return null; 3961 } 3962 3963 /** 3964 * Returns a list of all the CellLayouts in the workspace. 3965 */ 3966 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3967 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3968 int screenCount = getChildCount(); 3969 for (int screen = 0; screen < screenCount; screen++) { 3970 layouts.add(((CellLayout) getChildAt(screen))); 3971 } 3972 if (mLauncher.getHotseat() != null) { 3973 layouts.add(mLauncher.getHotseat().getLayout()); 3974 } 3975 return layouts; 3976 } 3977 3978 /** 3979 * We should only use this to search for specific children. Do not use this method to modify 3980 * ShortcutsAndWidgetsContainer directly. Includes ShortcutAndWidgetContainers from 3981 * the hotseat and workspace pages 3982 */ 3983 ArrayList<ShortcutAndWidgetContainer> getAllShortcutAndWidgetContainers() { 3984 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3985 new ArrayList<ShortcutAndWidgetContainer>(); 3986 int screenCount = getChildCount(); 3987 for (int screen = 0; screen < screenCount; screen++) { 3988 childrenLayouts.add(((CellLayout) getChildAt(screen)).getShortcutsAndWidgets()); 3989 } 3990 if (mLauncher.getHotseat() != null) { 3991 childrenLayouts.add(mLauncher.getHotseat().getLayout().getShortcutsAndWidgets()); 3992 } 3993 return childrenLayouts; 3994 } 3995 3996 public Folder getFolderForTag(final Object tag) { 3997 return (Folder) getFirstMatch(new ItemOperator() { 3998 3999 @Override 4000 public boolean evaluate(ItemInfo info, View v, View parent) { 4001 return (v instanceof Folder) && (((Folder) v).getInfo() == tag) 4002 && ((Folder) v).getInfo().opened; 4003 } 4004 }); 4005 } 4006 4007 public View getHomescreenIconByItemId(final long id) { 4008 return getFirstMatch(new ItemOperator() { 4009 4010 @Override 4011 public boolean evaluate(ItemInfo info, View v, View parent) { 4012 return info != null && info.id == id; 4013 } 4014 }); 4015 } 4016 4017 public View getViewForTag(final Object tag) { 4018 return getFirstMatch(new ItemOperator() { 4019 4020 @Override 4021 public boolean evaluate(ItemInfo info, View v, View parent) { 4022 return info == tag; 4023 } 4024 }); 4025 } 4026 4027 public LauncherAppWidgetHostView getWidgetForAppWidgetId(final int appWidgetId) { 4028 return (LauncherAppWidgetHostView) getFirstMatch(new ItemOperator() { 4029 4030 @Override 4031 public boolean evaluate(ItemInfo info, View v, View parent) { 4032 return (info instanceof LauncherAppWidgetInfo) && 4033 ((LauncherAppWidgetInfo) info).appWidgetId == appWidgetId; 4034 } 4035 }); 4036 } 4037 4038 private View getFirstMatch(final ItemOperator operator) { 4039 final View[] value = new View[1]; 4040 mapOverItems(MAP_NO_RECURSE, new ItemOperator() { 4041 @Override 4042 public boolean evaluate(ItemInfo info, View v, View parent) { 4043 if (operator.evaluate(info, v, parent)) { 4044 value[0] = v; 4045 return true; 4046 } 4047 return false; 4048 } 4049 }); 4050 return value[0]; 4051 } 4052 4053 void clearDropTargets() { 4054 mapOverItems(MAP_NO_RECURSE, new ItemOperator() { 4055 @Override 4056 public boolean evaluate(ItemInfo info, View v, View parent) { 4057 if (v instanceof DropTarget) { 4058 mDragController.removeDropTarget((DropTarget) v); 4059 } 4060 // not done, process all the shortcuts 4061 return false; 4062 } 4063 }); 4064 } 4065 4066 public void disableShortcutsByPackageName(final ArrayList<String> packages, 4067 final UserHandleCompat user, final int reason) { 4068 final HashSet<String> packageNames = new HashSet<String>(); 4069 packageNames.addAll(packages); 4070 4071 mapOverItems(MAP_RECURSE, new ItemOperator() { 4072 @Override 4073 public boolean evaluate(ItemInfo info, View v, View parent) { 4074 if (info instanceof ShortcutInfo && v instanceof BubbleTextView) { 4075 ShortcutInfo shortcutInfo = (ShortcutInfo) info; 4076 ComponentName cn = shortcutInfo.getTargetComponent(); 4077 if (user.equals(shortcutInfo.user) && cn != null 4078 && packageNames.contains(cn.getPackageName())) { 4079 shortcutInfo.isDisabled |= reason; 4080 BubbleTextView shortcut = (BubbleTextView) v; 4081 shortcut.applyFromShortcutInfo(shortcutInfo, mIconCache); 4082 4083 if (parent != null) { 4084 parent.invalidate(); 4085 } 4086 } 4087 } 4088 // process all the shortcuts 4089 return false; 4090 } 4091 }); 4092 } 4093 4094 // Removes ALL items that match a given package name, this is usually called when a package 4095 // has been removed and we want to remove all components (widgets, shortcuts, apps) that 4096 // belong to that package. 4097 void removeItemsByPackageName(final ArrayList<String> packages, final UserHandleCompat user) { 4098 final HashSet<String> packageNames = new HashSet<String>(); 4099 packageNames.addAll(packages); 4100 4101 // Filter out all the ItemInfos that this is going to affect 4102 final HashSet<ItemInfo> infos = new HashSet<ItemInfo>(); 4103 final HashSet<ComponentName> cns = new HashSet<ComponentName>(); 4104 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 4105 for (CellLayout layoutParent : cellLayouts) { 4106 ViewGroup layout = layoutParent.getShortcutsAndWidgets(); 4107 int childCount = layout.getChildCount(); 4108 for (int i = 0; i < childCount; ++i) { 4109 View view = layout.getChildAt(i); 4110 infos.add((ItemInfo) view.getTag()); 4111 } 4112 } 4113 LauncherModel.ItemInfoFilter filter = new LauncherModel.ItemInfoFilter() { 4114 @Override 4115 public boolean filterItem(ItemInfo parent, ItemInfo info, 4116 ComponentName cn) { 4117 if (packageNames.contains(cn.getPackageName()) 4118 && info.user.equals(user)) { 4119 cns.add(cn); 4120 return true; 4121 } 4122 return false; 4123 } 4124 }; 4125 LauncherModel.filterItemInfos(infos, filter); 4126 4127 // Remove the affected components 4128 removeItemsByComponentName(cns, user); 4129 } 4130 4131 /** 4132 * Removes items that match the item info specified. When applications are removed 4133 * as a part of an update, this is called to ensure that other widgets and application 4134 * shortcuts are not removed. 4135 */ 4136 void removeItemsByComponentName(final HashSet<ComponentName> componentNames, 4137 final UserHandleCompat user) { 4138 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 4139 for (final CellLayout layoutParent: cellLayouts) { 4140 final ViewGroup layout = layoutParent.getShortcutsAndWidgets(); 4141 4142 final HashMap<ItemInfo, View> children = new HashMap<ItemInfo, View>(); 4143 for (int j = 0; j < layout.getChildCount(); j++) { 4144 final View view = layout.getChildAt(j); 4145 children.put((ItemInfo) view.getTag(), view); 4146 } 4147 4148 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 4149 final HashMap<FolderInfo, ArrayList<ShortcutInfo>> folderAppsToRemove = 4150 new HashMap<FolderInfo, ArrayList<ShortcutInfo>>(); 4151 LauncherModel.ItemInfoFilter filter = new LauncherModel.ItemInfoFilter() { 4152 @Override 4153 public boolean filterItem(ItemInfo parent, ItemInfo info, 4154 ComponentName cn) { 4155 if (parent instanceof FolderInfo) { 4156 if (componentNames.contains(cn) && info.user.equals(user)) { 4157 FolderInfo folder = (FolderInfo) parent; 4158 ArrayList<ShortcutInfo> appsToRemove; 4159 if (folderAppsToRemove.containsKey(folder)) { 4160 appsToRemove = folderAppsToRemove.get(folder); 4161 } else { 4162 appsToRemove = new ArrayList<ShortcutInfo>(); 4163 folderAppsToRemove.put(folder, appsToRemove); 4164 } 4165 appsToRemove.add((ShortcutInfo) info); 4166 return true; 4167 } 4168 } else { 4169 if (componentNames.contains(cn) && info.user.equals(user)) { 4170 childrenToRemove.add(children.get(info)); 4171 return true; 4172 } 4173 } 4174 return false; 4175 } 4176 }; 4177 LauncherModel.filterItemInfos(children.keySet(), filter); 4178 4179 // Remove all the apps from their folders 4180 for (FolderInfo folder : folderAppsToRemove.keySet()) { 4181 ArrayList<ShortcutInfo> appsToRemove = folderAppsToRemove.get(folder); 4182 for (ShortcutInfo info : appsToRemove) { 4183 folder.remove(info); 4184 } 4185 } 4186 4187 // Remove all the other children 4188 for (View child : childrenToRemove) { 4189 // Note: We can not remove the view directly from CellLayoutChildren as this 4190 // does not re-mark the spaces as unoccupied. 4191 layoutParent.removeViewInLayout(child); 4192 if (child instanceof DropTarget) { 4193 mDragController.removeDropTarget((DropTarget) child); 4194 } 4195 } 4196 4197 if (childrenToRemove.size() > 0) { 4198 layout.requestLayout(); 4199 layout.invalidate(); 4200 } 4201 } 4202 4203 // Strip all the empty screens 4204 stripEmptyScreens(); 4205 } 4206 4207 interface ItemOperator { 4208 /** 4209 * Process the next itemInfo, possibly with side-effect on {@link ItemOperator#value}. 4210 * 4211 * @param info info for the shortcut 4212 * @param view view for the shortcut 4213 * @param parent containing folder, or null 4214 * @return true if done, false to continue the map 4215 */ 4216 public boolean evaluate(ItemInfo info, View view, View parent); 4217 } 4218 4219 /** 4220 * Map the operator over the shortcuts and widgets, return the first-non-null value. 4221 * 4222 * @param recurse true: iterate over folder children. false: op get the folders themselves. 4223 * @param op the operator to map over the shortcuts 4224 */ 4225 void mapOverItems(boolean recurse, ItemOperator op) { 4226 ArrayList<ShortcutAndWidgetContainer> containers = getAllShortcutAndWidgetContainers(); 4227 final int containerCount = containers.size(); 4228 for (int containerIdx = 0; containerIdx < containerCount; containerIdx++) { 4229 ShortcutAndWidgetContainer container = containers.get(containerIdx); 4230 // map over all the shortcuts on the workspace 4231 final int itemCount = container.getChildCount(); 4232 for (int itemIdx = 0; itemIdx < itemCount; itemIdx++) { 4233 View item = container.getChildAt(itemIdx); 4234 ItemInfo info = (ItemInfo) item.getTag(); 4235 if (recurse && info instanceof FolderInfo && item instanceof FolderIcon) { 4236 FolderIcon folder = (FolderIcon) item; 4237 ArrayList<View> folderChildren = folder.getFolder().getItemsInReadingOrder(); 4238 // map over all the children in the folder 4239 final int childCount = folderChildren.size(); 4240 for (int childIdx = 0; childIdx < childCount; childIdx++) { 4241 View child = folderChildren.get(childIdx); 4242 info = (ItemInfo) child.getTag(); 4243 if (op.evaluate(info, child, folder)) { 4244 return; 4245 } 4246 } 4247 } else { 4248 if (op.evaluate(info, item, null)) { 4249 return; 4250 } 4251 } 4252 } 4253 } 4254 } 4255 4256 void updateShortcuts(ArrayList<ShortcutInfo> shortcuts) { 4257 final HashSet<ShortcutInfo> updates = new HashSet<ShortcutInfo>(shortcuts); 4258 mapOverItems(MAP_RECURSE, new ItemOperator() { 4259 @Override 4260 public boolean evaluate(ItemInfo info, View v, View parent) { 4261 if (info instanceof ShortcutInfo && v instanceof BubbleTextView && 4262 updates.contains(info)) { 4263 ShortcutInfo si = (ShortcutInfo) info; 4264 BubbleTextView shortcut = (BubbleTextView) v; 4265 Drawable oldIcon = getTextViewIcon(shortcut); 4266 boolean oldPromiseState = (oldIcon instanceof PreloadIconDrawable) 4267 && ((PreloadIconDrawable) oldIcon).hasNotCompleted(); 4268 shortcut.applyFromShortcutInfo(si, mIconCache, 4269 si.isPromise() != oldPromiseState); 4270 4271 if (parent != null) { 4272 parent.invalidate(); 4273 } 4274 } 4275 // process all the shortcuts 4276 return false; 4277 } 4278 }); 4279 } 4280 4281 public void removeAbandonedPromise(String packageName, UserHandleCompat user) { 4282 ArrayList<String> packages = new ArrayList<String>(1); 4283 packages.add(packageName); 4284 LauncherModel.deletePackageFromDatabase(mLauncher, packageName, user); 4285 removeItemsByPackageName(packages, user); 4286 } 4287 4288 public void updateRestoreItems(final HashSet<ItemInfo> updates) { 4289 mapOverItems(MAP_RECURSE, new ItemOperator() { 4290 @Override 4291 public boolean evaluate(ItemInfo info, View v, View parent) { 4292 if (info instanceof ShortcutInfo && v instanceof BubbleTextView 4293 && updates.contains(info)) { 4294 ((BubbleTextView) v).applyState(false); 4295 } else if (v instanceof PendingAppWidgetHostView 4296 && info instanceof LauncherAppWidgetInfo 4297 && updates.contains(info)) { 4298 ((PendingAppWidgetHostView) v).applyState(); 4299 } 4300 // process all the shortcuts 4301 return false; 4302 } 4303 }); 4304 } 4305 4306 void widgetsRestored(ArrayList<LauncherAppWidgetInfo> changedInfo) { 4307 if (!changedInfo.isEmpty()) { 4308 DeferredWidgetRefresh widgetRefresh = new DeferredWidgetRefresh(changedInfo, 4309 mLauncher.getAppWidgetHost()); 4310 if (LauncherModel.getProviderInfo(getContext(), 4311 changedInfo.get(0).providerName, 4312 changedInfo.get(0).user) != null) { 4313 // Re-inflate the widgets which have changed status 4314 widgetRefresh.run(); 4315 } else { 4316 // widgetRefresh will automatically run when the packages are updated. 4317 // For now just update the progress bars 4318 for (LauncherAppWidgetInfo info : changedInfo) { 4319 if (info.hostView instanceof PendingAppWidgetHostView) { 4320 info.installProgress = 100; 4321 ((PendingAppWidgetHostView) info.hostView).applyState(); 4322 } 4323 } 4324 } 4325 } 4326 } 4327 4328 private void moveToScreen(int page, boolean animate) { 4329 if (!workspaceInModalState()) { 4330 if (animate) { 4331 snapToPage(page); 4332 } else { 4333 setCurrentPage(page); 4334 } 4335 } 4336 View child = getChildAt(page); 4337 if (child != null) { 4338 child.requestFocus(); 4339 } 4340 } 4341 4342 void moveToDefaultScreen(boolean animate) { 4343 moveToScreen(mDefaultPage, animate); 4344 } 4345 4346 void moveToCustomContentScreen(boolean animate) { 4347 if (hasCustomContent()) { 4348 int ccIndex = getPageIndexForScreenId(CUSTOM_CONTENT_SCREEN_ID); 4349 if (animate) { 4350 snapToPage(ccIndex); 4351 } else { 4352 setCurrentPage(ccIndex); 4353 } 4354 View child = getChildAt(ccIndex); 4355 if (child != null) { 4356 child.requestFocus(); 4357 } 4358 } 4359 exitWidgetResizeMode(); 4360 } 4361 4362 @Override 4363 protected PageIndicator.PageMarkerResources getPageIndicatorMarker(int pageIndex) { 4364 long screenId = getScreenIdForPageIndex(pageIndex); 4365 if (screenId == EXTRA_EMPTY_SCREEN_ID) { 4366 int count = mScreenOrder.size() - numCustomPages(); 4367 if (count > 1) { 4368 return new PageIndicator.PageMarkerResources(R.drawable.ic_pageindicator_current, 4369 R.drawable.ic_pageindicator_add); 4370 } 4371 } 4372 4373 return super.getPageIndicatorMarker(pageIndex); 4374 } 4375 4376 protected String getPageIndicatorDescription() { 4377 String settings = getResources().getString(R.string.settings_button_text); 4378 return getCurrentPageDescription() + ", " + settings; 4379 } 4380 4381 protected String getCurrentPageDescription() { 4382 if (hasCustomContent() && getNextPage() == 0) { 4383 return mCustomContentDescription; 4384 } 4385 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 4386 return getPageDescription(page); 4387 } 4388 4389 private String getPageDescription(int page) { 4390 int delta = numCustomPages(); 4391 return getContext().getString(R.string.workspace_scroll_format, 4392 page + 1 - delta, getChildCount() - delta); 4393 } 4394 4395 public void getLocationInDragLayer(int[] loc) { 4396 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 4397 } 4398 4399 @Override 4400 public void fillInLaunchSourceData(Bundle sourceData) { 4401 sourceData.putString(Stats.SOURCE_EXTRA_CONTAINER, Stats.CONTAINER_HOMESCREEN); 4402 sourceData.putInt(Stats.SOURCE_EXTRA_CONTAINER_PAGE, getCurrentPage()); 4403 } 4404 4405 /** 4406 * Used as a workaround to ensure that the AppWidgetService receives the 4407 * PACKAGE_ADDED broadcast before updating widgets. 4408 */ 4409 private class DeferredWidgetRefresh implements Runnable { 4410 private final ArrayList<LauncherAppWidgetInfo> mInfos; 4411 private final LauncherAppWidgetHost mHost; 4412 private final Handler mHandler; 4413 4414 private boolean mRefreshPending; 4415 4416 public DeferredWidgetRefresh(ArrayList<LauncherAppWidgetInfo> infos, 4417 LauncherAppWidgetHost host) { 4418 mInfos = infos; 4419 mHost = host; 4420 mHandler = new Handler(); 4421 mRefreshPending = true; 4422 4423 mHost.addProviderChangeListener(this); 4424 // Force refresh after 10 seconds, if we don't get the provider changed event. 4425 // This could happen when the provider is no longer available in the app. 4426 mHandler.postDelayed(this, 10000); 4427 } 4428 4429 @Override 4430 public void run() { 4431 mHost.removeProviderChangeListener(this); 4432 mHandler.removeCallbacks(this); 4433 4434 if (!mRefreshPending) { 4435 return; 4436 } 4437 4438 mRefreshPending = false; 4439 4440 for (LauncherAppWidgetInfo info : mInfos) { 4441 if (info.hostView instanceof PendingAppWidgetHostView) { 4442 // Remove and rebind the current widget, but don't delete it from the database 4443 PendingAppWidgetHostView view = (PendingAppWidgetHostView) info.hostView; 4444 mLauncher.removeItem(view, null, info, false /* deleteFromDb */); 4445 mLauncher.bindAppWidget(info); 4446 } 4447 } 4448 } 4449 } 4450} 4451