Workspace.java revision 4cab3b550b3c296cd120bdf23f524f34b155dca5
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 private final Runnable mBindPages = new Runnable() { 282 @Override 283 public void run() { 284 mLauncher.getModel().bindRemainingSynchronousPages(); 285 } 286 }; 287 288 /** 289 * Used to inflate the Workspace from XML. 290 * 291 * @param context The application's context. 292 * @param attrs The attributes set containing the Workspace's customization values. 293 */ 294 public Workspace(Context context, AttributeSet attrs) { 295 this(context, attrs, 0); 296 } 297 298 /** 299 * Used to inflate the Workspace from XML. 300 * 301 * @param context The application's context. 302 * @param attrs The attributes set containing the Workspace's customization values. 303 * @param defStyle Unused. 304 */ 305 public Workspace(Context context, AttributeSet attrs, int defStyle) { 306 super(context, attrs, defStyle); 307 308 mOutlineHelper = HolographicOutlineHelper.obtain(context); 309 310 mLauncher = (Launcher) context; 311 mStateTransitionAnimation = new WorkspaceStateTransitionAnimation(mLauncher, this); 312 final Resources res = getResources(); 313 DeviceProfile grid = mLauncher.getDeviceProfile(); 314 mWorkspaceFadeInAdjacentScreens = grid.shouldFadeAdjacentWorkspaceScreens(); 315 mFadeInAdjacentScreens = false; 316 mWallpaperManager = WallpaperManager.getInstance(context); 317 318 TypedArray a = context.obtainStyledAttributes(attrs, 319 R.styleable.Workspace, defStyle, 0); 320 mSpringLoadedShrinkFactor = 321 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 322 mOverviewModeShrinkFactor = 323 res.getInteger(R.integer.config_workspaceOverviewShrinkPercentage) / 100f; 324 mOriginalDefaultPage = mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 325 a.recycle(); 326 327 setOnHierarchyChangeListener(this); 328 setHapticFeedbackEnabled(false); 329 330 initWorkspace(); 331 332 // Disable multitouch across the workspace/all apps/customize tray 333 setMotionEventSplittingEnabled(true); 334 } 335 336 @Override 337 public void setInsets(Rect insets) { 338 mInsets.set(insets); 339 340 CellLayout customScreen = getScreenWithId(CUSTOM_CONTENT_SCREEN_ID); 341 if (customScreen != null) { 342 View customContent = customScreen.getShortcutsAndWidgets().getChildAt(0); 343 if (customContent instanceof Insettable) { 344 ((Insettable) customContent).setInsets(mInsets); 345 } 346 } 347 } 348 349 // estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each 350 // dimension if unsuccessful 351 public int[] estimateItemSize(ItemInfo itemInfo, boolean springLoaded) { 352 int[] size = new int[2]; 353 if (getChildCount() > 0) { 354 // Use the first non-custom page to estimate the child position 355 CellLayout cl = (CellLayout) getChildAt(numCustomPages()); 356 Rect r = estimateItemPosition(cl, itemInfo, 0, 0, itemInfo.spanX, itemInfo.spanY); 357 size[0] = r.width(); 358 size[1] = r.height(); 359 if (springLoaded) { 360 size[0] *= mSpringLoadedShrinkFactor; 361 size[1] *= mSpringLoadedShrinkFactor; 362 } 363 return size; 364 } else { 365 size[0] = Integer.MAX_VALUE; 366 size[1] = Integer.MAX_VALUE; 367 return size; 368 } 369 } 370 371 public Rect estimateItemPosition(CellLayout cl, ItemInfo pendingInfo, 372 int hCell, int vCell, int hSpan, int vSpan) { 373 Rect r = new Rect(); 374 cl.cellToRect(hCell, vCell, hSpan, vSpan, r); 375 return r; 376 } 377 378 @Override 379 public void onDragStart(final DragSource source, ItemInfo info, int dragAction) { 380 if (ENFORCE_DRAG_EVENT_ORDER) { 381 enfoceDragParity("onDragStart", 0, 0); 382 } 383 384 updateChildrenLayersEnabled(false); 385 mLauncher.lockScreenOrientation(); 386 mLauncher.onInteractionBegin(); 387 // Prevent any Un/InstallShortcutReceivers from updating the db while we are dragging 388 InstallShortcutReceiver.enableInstallQueue(); 389 390 if (mAddNewPageOnDrag) { 391 mDeferRemoveExtraEmptyScreen = false; 392 addExtraEmptyScreenOnDrag(); 393 } 394 } 395 396 public void setAddNewPageOnDrag(boolean addPage) { 397 mAddNewPageOnDrag = addPage; 398 } 399 400 public void deferRemoveExtraEmptyScreen() { 401 mDeferRemoveExtraEmptyScreen = true; 402 } 403 404 @Override 405 public void onDragEnd() { 406 if (ENFORCE_DRAG_EVENT_ORDER) { 407 enfoceDragParity("onDragEnd", 0, 0); 408 } 409 410 if (!mDeferRemoveExtraEmptyScreen) { 411 removeExtraEmptyScreen(true, mDragSourceInternal != null); 412 } 413 414 updateChildrenLayersEnabled(false); 415 mLauncher.unlockScreenOrientation(false); 416 417 // Re-enable any Un/InstallShortcutReceiver and now process any queued items 418 InstallShortcutReceiver.disableAndFlushInstallQueue(getContext()); 419 420 mDragSourceInternal = null; 421 mLauncher.onInteractionEnd(); 422 } 423 424 /** 425 * Initializes various states for this workspace. 426 */ 427 protected void initWorkspace() { 428 mCurrentPage = mDefaultPage; 429 LauncherAppState app = LauncherAppState.getInstance(); 430 DeviceProfile grid = mLauncher.getDeviceProfile(); 431 mIconCache = app.getIconCache(); 432 setWillNotDraw(false); 433 setClipChildren(false); 434 setClipToPadding(false); 435 setChildrenDrawnWithCacheEnabled(true); 436 437 setMinScale(mOverviewModeShrinkFactor); 438 setupLayoutTransition(); 439 440 mWallpaperOffset = new WallpaperOffsetInterpolator(); 441 442 mMaxDistanceForFolderCreation = (0.55f * grid.iconSizePx); 443 444 // Set the wallpaper dimensions when Launcher starts up 445 setWallpaperDimension(); 446 447 setEdgeGlowColor(getResources().getColor(R.color.workspace_edge_effect_color)); 448 } 449 450 private void setupLayoutTransition() { 451 // We want to show layout transitions when pages are deleted, to close the gap. 452 mLayoutTransition = new LayoutTransition(); 453 mLayoutTransition.enableTransitionType(LayoutTransition.DISAPPEARING); 454 mLayoutTransition.enableTransitionType(LayoutTransition.CHANGE_DISAPPEARING); 455 mLayoutTransition.disableTransitionType(LayoutTransition.APPEARING); 456 mLayoutTransition.disableTransitionType(LayoutTransition.CHANGE_APPEARING); 457 setLayoutTransition(mLayoutTransition); 458 } 459 460 void enableLayoutTransitions() { 461 setLayoutTransition(mLayoutTransition); 462 } 463 void disableLayoutTransitions() { 464 setLayoutTransition(null); 465 } 466 467 @Override 468 public void onChildViewAdded(View parent, View child) { 469 if (!(child instanceof CellLayout)) { 470 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 471 } 472 CellLayout cl = ((CellLayout) child); 473 cl.setOnInterceptTouchListener(this); 474 cl.setClickable(true); 475 cl.setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_NO); 476 super.onChildViewAdded(parent, child); 477 } 478 479 protected boolean shouldDrawChild(View child) { 480 final CellLayout cl = (CellLayout) child; 481 return super.shouldDrawChild(child) && 482 (mIsSwitchingState || 483 cl.getShortcutsAndWidgets().getAlpha() > 0 || 484 cl.getBackgroundAlpha() > 0); 485 } 486 487 /** 488 * @return The open folder on the current screen, or null if there is none 489 */ 490 public Folder getOpenFolder() { 491 DragLayer dragLayer = mLauncher.getDragLayer(); 492 int count = dragLayer.getChildCount(); 493 for (int i = 0; i < count; i++) { 494 View child = dragLayer.getChildAt(i); 495 if (child instanceof Folder) { 496 Folder folder = (Folder) child; 497 if (folder.getInfo().opened) 498 return folder; 499 } 500 } 501 return null; 502 } 503 504 boolean isTouchActive() { 505 return mTouchState != TOUCH_STATE_REST; 506 } 507 508 public void removeAllWorkspaceScreens() { 509 // Disable all layout transitions before removing all pages to ensure that we don't get the 510 // transition animations competing with us changing the scroll when we add pages or the 511 // custom content screen 512 disableLayoutTransitions(); 513 514 // Since we increment the current page when we call addCustomContentPage via bindScreens 515 // (and other places), we need to adjust the current page back when we clear the pages 516 if (hasCustomContent()) { 517 removeCustomContentPage(); 518 } 519 520 // Remove the pages and clear the screen models 521 removeAllViews(); 522 mScreenOrder.clear(); 523 mWorkspaceScreens.clear(); 524 525 // Re-enable the layout transitions 526 enableLayoutTransitions(); 527 } 528 529 public long insertNewWorkspaceScreenBeforeEmptyScreen(long screenId) { 530 // Find the index to insert this view into. If the empty screen exists, then 531 // insert it before that. 532 int insertIndex = mScreenOrder.indexOf(EXTRA_EMPTY_SCREEN_ID); 533 if (insertIndex < 0) { 534 insertIndex = mScreenOrder.size(); 535 } 536 return insertNewWorkspaceScreen(screenId, insertIndex); 537 } 538 539 public long insertNewWorkspaceScreen(long screenId) { 540 return insertNewWorkspaceScreen(screenId, getChildCount()); 541 } 542 543 public long insertNewWorkspaceScreen(long screenId, int insertIndex) { 544 if (mWorkspaceScreens.containsKey(screenId)) { 545 throw new RuntimeException("Screen id " + screenId + " already exists!"); 546 } 547 548 // Inflate the cell layout, but do not add it automatically so that we can get the newly 549 // created CellLayout. 550 CellLayout newScreen = (CellLayout) mLauncher.getLayoutInflater().inflate( 551 R.layout.workspace_screen, this, false /* attachToRoot */); 552 553 newScreen.setOnLongClickListener(mLongClickListener); 554 newScreen.setOnClickListener(mLauncher); 555 newScreen.setSoundEffectsEnabled(false); 556 mWorkspaceScreens.put(screenId, newScreen); 557 mScreenOrder.add(insertIndex, screenId); 558 addView(newScreen, insertIndex); 559 560 LauncherAccessibilityDelegate delegate = 561 LauncherAppState.getInstance().getAccessibilityDelegate(); 562 if (delegate != null && delegate.isInAccessibleDrag()) { 563 newScreen.enableAccessibleDrag(true, CellLayout.WORKSPACE_ACCESSIBILITY_DRAG); 564 } 565 return screenId; 566 } 567 568 public void createCustomContentContainer() { 569 CellLayout customScreen = (CellLayout) 570 mLauncher.getLayoutInflater().inflate(R.layout.workspace_screen, this, false); 571 customScreen.disableDragTarget(); 572 customScreen.disableJailContent(); 573 574 mWorkspaceScreens.put(CUSTOM_CONTENT_SCREEN_ID, customScreen); 575 mScreenOrder.add(0, CUSTOM_CONTENT_SCREEN_ID); 576 577 // We want no padding on the custom content 578 customScreen.setPadding(0, 0, 0, 0); 579 580 addFullScreenPage(customScreen); 581 582 // Ensure that the current page and default page are maintained. 583 mDefaultPage = mOriginalDefaultPage + 1; 584 585 // Update the custom content hint 586 if (mRestorePage != INVALID_RESTORE_PAGE) { 587 mRestorePage = mRestorePage + 1; 588 } else { 589 setCurrentPage(getCurrentPage() + 1); 590 } 591 } 592 593 public void removeCustomContentPage() { 594 CellLayout customScreen = getScreenWithId(CUSTOM_CONTENT_SCREEN_ID); 595 if (customScreen == null) { 596 throw new RuntimeException("Expected custom content screen to exist"); 597 } 598 599 mWorkspaceScreens.remove(CUSTOM_CONTENT_SCREEN_ID); 600 mScreenOrder.remove(CUSTOM_CONTENT_SCREEN_ID); 601 removeView(customScreen); 602 603 if (mCustomContentCallbacks != null) { 604 mCustomContentCallbacks.onScrollProgressChanged(0); 605 mCustomContentCallbacks.onHide(); 606 } 607 608 mCustomContentCallbacks = null; 609 610 // Ensure that the current page and default page are maintained. 611 mDefaultPage = mOriginalDefaultPage - 1; 612 613 // Update the custom content hint 614 if (mRestorePage != INVALID_RESTORE_PAGE) { 615 mRestorePage = mRestorePage - 1; 616 } else { 617 setCurrentPage(getCurrentPage() - 1); 618 } 619 } 620 621 public void addToCustomContentPage(View customContent, CustomContentCallbacks callbacks, 622 String description) { 623 if (getPageIndexForScreenId(CUSTOM_CONTENT_SCREEN_ID) < 0) { 624 throw new RuntimeException("Expected custom content screen to exist"); 625 } 626 627 // Add the custom content to the full screen custom page 628 CellLayout customScreen = getScreenWithId(CUSTOM_CONTENT_SCREEN_ID); 629 int spanX = customScreen.getCountX(); 630 int spanY = customScreen.getCountY(); 631 CellLayout.LayoutParams lp = new CellLayout.LayoutParams(0, 0, spanX, spanY); 632 lp.canReorder = false; 633 lp.isFullscreen = true; 634 if (customContent instanceof Insettable) { 635 ((Insettable)customContent).setInsets(mInsets); 636 } 637 638 // Verify that the child is removed from any existing parent. 639 if (customContent.getParent() instanceof ViewGroup) { 640 ViewGroup parent = (ViewGroup) customContent.getParent(); 641 parent.removeView(customContent); 642 } 643 customScreen.removeAllViews(); 644 customScreen.addViewToCellLayout(customContent, 0, 0, lp, true); 645 mCustomContentDescription = description; 646 647 mCustomContentCallbacks = callbacks; 648 } 649 650 public void addExtraEmptyScreenOnDrag() { 651 boolean lastChildOnScreen = false; 652 boolean childOnFinalScreen = false; 653 654 // Cancel any pending removal of empty screen 655 mRemoveEmptyScreenRunnable = null; 656 657 if (mDragSourceInternal != null) { 658 if (mDragSourceInternal.getChildCount() == 1) { 659 lastChildOnScreen = true; 660 } 661 CellLayout cl = (CellLayout) mDragSourceInternal.getParent(); 662 if (indexOfChild(cl) == getChildCount() - 1) { 663 childOnFinalScreen = true; 664 } 665 } 666 667 // If this is the last item on the final screen 668 if (lastChildOnScreen && childOnFinalScreen) { 669 return; 670 } 671 if (!mWorkspaceScreens.containsKey(EXTRA_EMPTY_SCREEN_ID)) { 672 insertNewWorkspaceScreen(EXTRA_EMPTY_SCREEN_ID); 673 } 674 } 675 676 public boolean addExtraEmptyScreen() { 677 if (!mWorkspaceScreens.containsKey(EXTRA_EMPTY_SCREEN_ID)) { 678 insertNewWorkspaceScreen(EXTRA_EMPTY_SCREEN_ID); 679 return true; 680 } 681 return false; 682 } 683 684 private void convertFinalScreenToEmptyScreenIfNecessary() { 685 if (mLauncher.isWorkspaceLoading()) { 686 // Invalid and dangerous operation if workspace is loading 687 Launcher.addDumpLog(TAG, " - workspace loading, skip", true); 688 return; 689 } 690 691 if (hasExtraEmptyScreen() || mScreenOrder.size() == 0) return; 692 long finalScreenId = mScreenOrder.get(mScreenOrder.size() - 1); 693 694 if (finalScreenId == CUSTOM_CONTENT_SCREEN_ID) return; 695 CellLayout finalScreen = mWorkspaceScreens.get(finalScreenId); 696 697 // If the final screen is empty, convert it to the extra empty screen 698 if (finalScreen.getShortcutsAndWidgets().getChildCount() == 0 && 699 !finalScreen.isDropPending()) { 700 mWorkspaceScreens.remove(finalScreenId); 701 mScreenOrder.remove(finalScreenId); 702 703 // if this is the last non-custom content screen, convert it to the empty screen 704 mWorkspaceScreens.put(EXTRA_EMPTY_SCREEN_ID, finalScreen); 705 mScreenOrder.add(EXTRA_EMPTY_SCREEN_ID); 706 707 // Update the model if we have changed any screens 708 mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); 709 } 710 } 711 712 public void removeExtraEmptyScreen(final boolean animate, boolean stripEmptyScreens) { 713 removeExtraEmptyScreenDelayed(animate, null, 0, stripEmptyScreens); 714 } 715 716 public void removeExtraEmptyScreenDelayed(final boolean animate, final Runnable onComplete, 717 final int delay, final boolean stripEmptyScreens) { 718 if (mLauncher.isWorkspaceLoading()) { 719 // Don't strip empty screens if the workspace is still loading 720 Launcher.addDumpLog(TAG, " - workspace loading, skip", true); 721 return; 722 } 723 724 if (delay > 0) { 725 postDelayed(new Runnable() { 726 @Override 727 public void run() { 728 removeExtraEmptyScreenDelayed(animate, onComplete, 0, stripEmptyScreens); 729 } 730 }, delay); 731 return; 732 } 733 734 convertFinalScreenToEmptyScreenIfNecessary(); 735 if (hasExtraEmptyScreen()) { 736 int emptyIndex = mScreenOrder.indexOf(EXTRA_EMPTY_SCREEN_ID); 737 if (getNextPage() == emptyIndex) { 738 snapToPage(getNextPage() - 1, SNAP_OFF_EMPTY_SCREEN_DURATION); 739 fadeAndRemoveEmptyScreen(SNAP_OFF_EMPTY_SCREEN_DURATION, FADE_EMPTY_SCREEN_DURATION, 740 onComplete, stripEmptyScreens); 741 } else { 742 snapToPage(getNextPage(), 0); 743 fadeAndRemoveEmptyScreen(0, FADE_EMPTY_SCREEN_DURATION, 744 onComplete, stripEmptyScreens); 745 } 746 return; 747 } else if (stripEmptyScreens) { 748 // If we're not going to strip the empty screens after removing 749 // the extra empty screen, do it right away. 750 stripEmptyScreens(); 751 } 752 753 if (onComplete != null) { 754 onComplete.run(); 755 } 756 } 757 758 private void fadeAndRemoveEmptyScreen(int delay, int duration, final Runnable onComplete, 759 final boolean stripEmptyScreens) { 760 // XXX: Do we need to update LM workspace screens below? 761 PropertyValuesHolder alpha = PropertyValuesHolder.ofFloat("alpha", 0f); 762 PropertyValuesHolder bgAlpha = PropertyValuesHolder.ofFloat("backgroundAlpha", 0f); 763 764 final CellLayout cl = mWorkspaceScreens.get(EXTRA_EMPTY_SCREEN_ID); 765 766 mRemoveEmptyScreenRunnable = new Runnable() { 767 @Override 768 public void run() { 769 if (hasExtraEmptyScreen()) { 770 mWorkspaceScreens.remove(EXTRA_EMPTY_SCREEN_ID); 771 mScreenOrder.remove(EXTRA_EMPTY_SCREEN_ID); 772 removeView(cl); 773 if (stripEmptyScreens) { 774 stripEmptyScreens(); 775 } 776 } 777 } 778 }; 779 780 ObjectAnimator oa = ObjectAnimator.ofPropertyValuesHolder(cl, alpha, bgAlpha); 781 oa.setDuration(duration); 782 oa.setStartDelay(delay); 783 oa.addListener(new AnimatorListenerAdapter() { 784 @Override 785 public void onAnimationEnd(Animator animation) { 786 if (mRemoveEmptyScreenRunnable != null) { 787 mRemoveEmptyScreenRunnable.run(); 788 } 789 if (onComplete != null) { 790 onComplete.run(); 791 } 792 } 793 }); 794 oa.start(); 795 } 796 797 public boolean hasExtraEmptyScreen() { 798 int nScreens = getChildCount(); 799 nScreens = nScreens - numCustomPages(); 800 return mWorkspaceScreens.containsKey(EXTRA_EMPTY_SCREEN_ID) && nScreens > 1; 801 } 802 803 public long commitExtraEmptyScreen() { 804 if (mLauncher.isWorkspaceLoading()) { 805 // Invalid and dangerous operation if workspace is loading 806 Launcher.addDumpLog(TAG, " - workspace loading, skip", true); 807 return -1; 808 } 809 810 int index = getPageIndexForScreenId(EXTRA_EMPTY_SCREEN_ID); 811 CellLayout cl = mWorkspaceScreens.get(EXTRA_EMPTY_SCREEN_ID); 812 mWorkspaceScreens.remove(EXTRA_EMPTY_SCREEN_ID); 813 mScreenOrder.remove(EXTRA_EMPTY_SCREEN_ID); 814 815 long newId = LauncherAppState.getLauncherProvider().generateNewScreenId(); 816 mWorkspaceScreens.put(newId, cl); 817 mScreenOrder.add(newId); 818 819 // Update the page indicator marker 820 if (getPageIndicator() != null) { 821 getPageIndicator().updateMarker(index, getPageIndicatorMarker(index)); 822 } 823 824 // Update the model for the new screen 825 mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); 826 827 return newId; 828 } 829 830 public CellLayout getScreenWithId(long screenId) { 831 CellLayout layout = mWorkspaceScreens.get(screenId); 832 return layout; 833 } 834 835 public long getIdForScreen(CellLayout layout) { 836 int index = mWorkspaceScreens.indexOfValue(layout); 837 if (index != -1) { 838 return mWorkspaceScreens.keyAt(index); 839 } 840 return -1; 841 } 842 843 public int getPageIndexForScreenId(long screenId) { 844 return indexOfChild(mWorkspaceScreens.get(screenId)); 845 } 846 847 public long getScreenIdForPageIndex(int index) { 848 if (0 <= index && index < mScreenOrder.size()) { 849 return mScreenOrder.get(index); 850 } 851 return -1; 852 } 853 854 public ArrayList<Long> getScreenOrder() { 855 return mScreenOrder; 856 } 857 858 public void stripEmptyScreens() { 859 if (mLauncher.isWorkspaceLoading()) { 860 // Don't strip empty screens if the workspace is still loading. 861 // This is dangerous and can result in data loss. 862 Launcher.addDumpLog(TAG, " - workspace loading, skip", true); 863 return; 864 } 865 866 if (isPageMoving()) { 867 mStripScreensOnPageStopMoving = true; 868 return; 869 } 870 871 int currentPage = getNextPage(); 872 ArrayList<Long> removeScreens = new ArrayList<Long>(); 873 int total = mWorkspaceScreens.size(); 874 for (int i = 0; i < total; i++) { 875 long id = mWorkspaceScreens.keyAt(i); 876 CellLayout cl = mWorkspaceScreens.valueAt(i); 877 if (id >= 0 && cl.getShortcutsAndWidgets().getChildCount() == 0) { 878 removeScreens.add(id); 879 } 880 } 881 882 LauncherAccessibilityDelegate delegate = 883 LauncherAppState.getInstance().getAccessibilityDelegate(); 884 885 // We enforce at least one page to add new items to. In the case that we remove the last 886 // such screen, we convert the last screen to the empty screen 887 int minScreens = 1 + numCustomPages(); 888 889 int pageShift = 0; 890 for (Long id: removeScreens) { 891 CellLayout cl = mWorkspaceScreens.get(id); 892 mWorkspaceScreens.remove(id); 893 mScreenOrder.remove(id); 894 895 if (getChildCount() > minScreens) { 896 if (indexOfChild(cl) < currentPage) { 897 pageShift++; 898 } 899 900 if (delegate != null && delegate.isInAccessibleDrag()) { 901 cl.enableAccessibleDrag(false, CellLayout.WORKSPACE_ACCESSIBILITY_DRAG); 902 } 903 904 removeView(cl); 905 } else { 906 // if this is the last non-custom content screen, convert it to the empty screen 907 mRemoveEmptyScreenRunnable = null; 908 mWorkspaceScreens.put(EXTRA_EMPTY_SCREEN_ID, cl); 909 mScreenOrder.add(EXTRA_EMPTY_SCREEN_ID); 910 } 911 } 912 913 if (!removeScreens.isEmpty()) { 914 // Update the model if we have changed any screens 915 mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); 916 } 917 918 if (pageShift >= 0) { 919 setCurrentPage(currentPage - pageShift); 920 } 921 } 922 923 // See implementation for parameter definition. 924 void addInScreen(View child, long container, long screenId, 925 int x, int y, int spanX, int spanY) { 926 addInScreen(child, container, screenId, x, y, spanX, spanY, false, false); 927 } 928 929 // At bind time, we use the rank (screenId) to compute x and y for hotseat items. 930 // See implementation for parameter definition. 931 void addInScreenFromBind(View child, long container, long screenId, int x, int y, 932 int spanX, int spanY) { 933 addInScreen(child, container, screenId, x, y, spanX, spanY, false, true); 934 } 935 936 // See implementation for parameter definition. 937 void addInScreen(View child, long container, long screenId, int x, int y, int spanX, int spanY, 938 boolean insert) { 939 addInScreen(child, container, screenId, x, y, spanX, spanY, insert, false); 940 } 941 942 /** 943 * Adds the specified child in the specified screen. The position and dimension of 944 * the child are defined by x, y, spanX and spanY. 945 * 946 * @param child The child to add in one of the workspace's screens. 947 * @param screenId The screen in which to add the child. 948 * @param x The X position of the child in the screen's grid. 949 * @param y The Y position of the child in the screen's grid. 950 * @param spanX The number of cells spanned horizontally by the child. 951 * @param spanY The number of cells spanned vertically by the child. 952 * @param insert When true, the child is inserted at the beginning of the children list. 953 * @param computeXYFromRank When true, we use the rank (stored in screenId) to compute 954 * the x and y position in which to place hotseat items. Otherwise 955 * we use the x and y position to compute the rank. 956 */ 957 void addInScreen(View child, long container, long screenId, int x, int y, int spanX, int spanY, 958 boolean insert, boolean computeXYFromRank) { 959 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 960 if (getScreenWithId(screenId) == null) { 961 Log.e(TAG, "Skipping child, screenId " + screenId + " not found"); 962 // DEBUGGING - Print out the stack trace to see where we are adding from 963 new Throwable().printStackTrace(); 964 return; 965 } 966 } 967 if (screenId == EXTRA_EMPTY_SCREEN_ID) { 968 // This should never happen 969 throw new RuntimeException("Screen id should not be EXTRA_EMPTY_SCREEN_ID"); 970 } 971 972 final CellLayout layout; 973 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 974 layout = mLauncher.getHotseat().getLayout(); 975 child.setOnKeyListener(new HotseatIconKeyEventListener()); 976 977 // Hide folder title in the hotseat 978 if (child instanceof FolderIcon) { 979 ((FolderIcon) child).setTextVisible(false); 980 } 981 982 if (computeXYFromRank) { 983 x = mLauncher.getHotseat().getCellXFromOrder((int) screenId); 984 y = mLauncher.getHotseat().getCellYFromOrder((int) screenId); 985 } else { 986 screenId = mLauncher.getHotseat().getOrderInHotseat(x, y); 987 } 988 } else { 989 // Show folder title if not in the hotseat 990 if (child instanceof FolderIcon) { 991 ((FolderIcon) child).setTextVisible(true); 992 } 993 layout = getScreenWithId(screenId); 994 child.setOnKeyListener(new IconKeyEventListener()); 995 } 996 997 ViewGroup.LayoutParams genericLp = child.getLayoutParams(); 998 CellLayout.LayoutParams lp; 999 if (genericLp == null || !(genericLp instanceof CellLayout.LayoutParams)) { 1000 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 1001 } else { 1002 lp = (CellLayout.LayoutParams) genericLp; 1003 lp.cellX = x; 1004 lp.cellY = y; 1005 lp.cellHSpan = spanX; 1006 lp.cellVSpan = spanY; 1007 } 1008 1009 if (spanX < 0 && spanY < 0) { 1010 lp.isLockedToGrid = false; 1011 } 1012 1013 // Get the canonical child id to uniquely represent this view in this screen 1014 ItemInfo info = (ItemInfo) child.getTag(); 1015 int childId = mLauncher.getViewIdForItem(info); 1016 1017 boolean markCellsAsOccupied = !(child instanceof Folder); 1018 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 1019 // TODO: This branch occurs when the workspace is adding views 1020 // outside of the defined grid 1021 // maybe we should be deleting these items from the LauncherModel? 1022 Launcher.addDumpLog(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout", true); 1023 } 1024 1025 if (!(child instanceof Folder)) { 1026 child.setHapticFeedbackEnabled(false); 1027 child.setOnLongClickListener(mLongClickListener); 1028 } 1029 if (child instanceof DropTarget) { 1030 mDragController.addDropTarget((DropTarget) child); 1031 } 1032 } 1033 1034 /** 1035 * Called directly from a CellLayout (not by the framework), after we've been added as a 1036 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 1037 * that it should intercept touch events, which is not something that is normally supported. 1038 */ 1039 @SuppressLint("ClickableViewAccessibility") 1040 @Override 1041 public boolean onTouch(View v, MotionEvent event) { 1042 return (workspaceInModalState() || !isFinishedSwitchingState()) 1043 || (!workspaceInModalState() && indexOfChild(v) != mCurrentPage); 1044 } 1045 1046 public boolean isSwitchingState() { 1047 return mIsSwitchingState; 1048 } 1049 1050 /** This differs from isSwitchingState in that we take into account how far the transition 1051 * has completed. */ 1052 public boolean isFinishedSwitchingState() { 1053 return !mIsSwitchingState || (mTransitionProgress > 0.5f); 1054 } 1055 1056 protected void onWindowVisibilityChanged (int visibility) { 1057 mLauncher.onWindowVisibilityChanged(visibility); 1058 } 1059 1060 @Override 1061 public boolean dispatchUnhandledMove(View focused, int direction) { 1062 if (workspaceInModalState() || !isFinishedSwitchingState()) { 1063 // when the home screens are shrunken, shouldn't allow side-scrolling 1064 return false; 1065 } 1066 return super.dispatchUnhandledMove(focused, direction); 1067 } 1068 1069 @Override 1070 public boolean onInterceptTouchEvent(MotionEvent ev) { 1071 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 1072 case MotionEvent.ACTION_DOWN: 1073 mXDown = ev.getX(); 1074 mYDown = ev.getY(); 1075 mTouchDownTime = System.currentTimeMillis(); 1076 break; 1077 case MotionEvent.ACTION_POINTER_UP: 1078 case MotionEvent.ACTION_UP: 1079 if (mTouchState == TOUCH_STATE_REST) { 1080 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 1081 if (currentPage != null) { 1082 onWallpaperTap(ev); 1083 } 1084 } 1085 } 1086 return super.onInterceptTouchEvent(ev); 1087 } 1088 1089 @Override 1090 public boolean onGenericMotionEvent(MotionEvent event) { 1091 // Ignore pointer scroll events if the custom content doesn't allow scrolling. 1092 if ((getScreenIdForPageIndex(getCurrentPage()) == CUSTOM_CONTENT_SCREEN_ID) 1093 && (mCustomContentCallbacks != null) 1094 && !mCustomContentCallbacks.isScrollingAllowed()) { 1095 return false; 1096 } 1097 return super.onGenericMotionEvent(event); 1098 } 1099 1100 protected void reinflateWidgetsIfNecessary() { 1101 final int clCount = getChildCount(); 1102 for (int i = 0; i < clCount; i++) { 1103 CellLayout cl = (CellLayout) getChildAt(i); 1104 ShortcutAndWidgetContainer swc = cl.getShortcutsAndWidgets(); 1105 final int itemCount = swc.getChildCount(); 1106 for (int j = 0; j < itemCount; j++) { 1107 View v = swc.getChildAt(j); 1108 1109 if (v != null && v.getTag() instanceof LauncherAppWidgetInfo) { 1110 LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) v.getTag(); 1111 LauncherAppWidgetHostView lahv = (LauncherAppWidgetHostView) info.hostView; 1112 if (lahv != null && lahv.isReinflateRequired()) { 1113 mLauncher.removeAppWidget(info); 1114 // Remove the current widget which is inflated with the wrong orientation 1115 cl.removeView(lahv); 1116 mLauncher.bindAppWidget(info); 1117 } 1118 } 1119 } 1120 } 1121 } 1122 1123 @Override 1124 protected void determineScrollingStart(MotionEvent ev) { 1125 if (!isFinishedSwitchingState()) return; 1126 1127 float deltaX = ev.getX() - mXDown; 1128 float absDeltaX = Math.abs(deltaX); 1129 float absDeltaY = Math.abs(ev.getY() - mYDown); 1130 1131 if (Float.compare(absDeltaX, 0f) == 0) return; 1132 1133 float slope = absDeltaY / absDeltaX; 1134 float theta = (float) Math.atan(slope); 1135 1136 if (absDeltaX > mTouchSlop || absDeltaY > mTouchSlop) { 1137 cancelCurrentPageLongPress(); 1138 } 1139 1140 boolean passRightSwipesToCustomContent = 1141 (mTouchDownTime - mCustomContentShowTime) > CUSTOM_CONTENT_GESTURE_DELAY; 1142 1143 boolean swipeInIgnoreDirection = mIsRtl ? deltaX < 0 : deltaX > 0; 1144 boolean onCustomContentScreen = 1145 getScreenIdForPageIndex(getCurrentPage()) == CUSTOM_CONTENT_SCREEN_ID; 1146 if (swipeInIgnoreDirection && onCustomContentScreen && passRightSwipesToCustomContent) { 1147 // Pass swipes to the right to the custom content page. 1148 return; 1149 } 1150 1151 if (onCustomContentScreen && (mCustomContentCallbacks != null) 1152 && !mCustomContentCallbacks.isScrollingAllowed()) { 1153 // Don't allow workspace scrolling if the current custom content screen doesn't allow 1154 // scrolling. 1155 return; 1156 } 1157 1158 if (theta > MAX_SWIPE_ANGLE) { 1159 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 1160 return; 1161 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 1162 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 1163 // increase the touch slop to make it harder to begin scrolling the workspace. This 1164 // results in vertically scrolling widgets to more easily. The higher the angle, the 1165 // more we increase touch slop. 1166 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 1167 float extraRatio = (float) 1168 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 1169 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 1170 } else { 1171 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 1172 super.determineScrollingStart(ev); 1173 } 1174 } 1175 1176 protected void onPageBeginMoving() { 1177 super.onPageBeginMoving(); 1178 1179 if (isHardwareAccelerated()) { 1180 updateChildrenLayersEnabled(false); 1181 } else { 1182 if (mNextPage != INVALID_PAGE) { 1183 // we're snapping to a particular screen 1184 enableChildrenCache(mCurrentPage, mNextPage); 1185 } else { 1186 // this is when user is actively dragging a particular screen, they might 1187 // swipe it either left or right (but we won't advance by more than one screen) 1188 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 1189 } 1190 } 1191 } 1192 1193 protected void onPageEndMoving() { 1194 super.onPageEndMoving(); 1195 1196 if (isHardwareAccelerated()) { 1197 updateChildrenLayersEnabled(false); 1198 } else { 1199 clearChildrenCache(); 1200 } 1201 1202 if (mDragController.isDragging()) { 1203 if (workspaceInModalState()) { 1204 // If we are in springloaded mode, then force an event to check if the current touch 1205 // is under a new page (to scroll to) 1206 mDragController.forceTouchMove(); 1207 } 1208 } 1209 1210 if (mDelayedResizeRunnable != null) { 1211 mDelayedResizeRunnable.run(); 1212 mDelayedResizeRunnable = null; 1213 } 1214 1215 if (mDelayedSnapToPageRunnable != null) { 1216 mDelayedSnapToPageRunnable.run(); 1217 mDelayedSnapToPageRunnable = null; 1218 } 1219 if (mStripScreensOnPageStopMoving) { 1220 stripEmptyScreens(); 1221 mStripScreensOnPageStopMoving = false; 1222 } 1223 1224 if (mShouldSendPageSettled) { 1225 mLauncherOverlay.onScrollSettled(); 1226 mShouldSendPageSettled = false; 1227 } 1228 } 1229 1230 protected void onScrollInteractionBegin() { 1231 super.onScrollInteractionEnd(); 1232 mScrollInteractionBegan = true; 1233 } 1234 1235 protected void onScrollInteractionEnd() { 1236 super.onScrollInteractionEnd(); 1237 mScrollInteractionBegan = false; 1238 if (mStartedSendingScrollEvents) { 1239 mStartedSendingScrollEvents = false; 1240 mLauncherOverlay.onScrollInteractionEnd(); 1241 } 1242 } 1243 1244 public void setLauncherOverlay(LauncherOverlay overlay) { 1245 mLauncherOverlay = overlay; 1246 } 1247 1248 @Override 1249 protected void overScroll(float amount) { 1250 boolean shouldOverScroll = (amount <= 0 && (!hasCustomContent() || mIsRtl)) || 1251 (amount >= 0 && (!hasCustomContent() || !mIsRtl)); 1252 1253 boolean shouldScrollOverlay = mLauncherOverlay != null && 1254 ((amount <= 0 && !mIsRtl) || (amount >= 0 && mIsRtl)); 1255 1256 boolean shouldZeroOverlay = mLauncherOverlay != null && mLastOverlaySroll != 0 && 1257 ((amount >= 0 && !mIsRtl) || (amount <= 0 && mIsRtl)); 1258 1259 if (shouldScrollOverlay) { 1260 if (!mStartedSendingScrollEvents && mScrollInteractionBegan) { 1261 mStartedSendingScrollEvents = true; 1262 mLauncherOverlay.onScrollInteractionBegin(); 1263 mShouldSendPageSettled = true; 1264 } 1265 int screenSize = getViewportWidth(); 1266 float f = (amount / screenSize); 1267 1268 int progress = (int) Math.abs((f * 100)); 1269 1270 mLastOverlaySroll = progress; 1271 mLauncherOverlay.onScrollChange(progress, mIsRtl); 1272 } else if (shouldOverScroll) { 1273 dampedOverScroll(amount); 1274 } 1275 1276 if (shouldZeroOverlay) { 1277 mLauncherOverlay.onScrollChange(0, mIsRtl); 1278 } 1279 } 1280 1281 @Override 1282 protected void getEdgeVerticalPostion(int[] pos) { 1283 View child = getChildAt(getPageCount() - 1); 1284 pos[0] = child.getTop(); 1285 pos[1] = child.getBottom(); 1286 } 1287 1288 @Override 1289 protected void notifyPageSwitchListener() { 1290 super.notifyPageSwitchListener(); 1291 1292 if (hasCustomContent() && getNextPage() == 0 && !mCustomContentShowing) { 1293 mCustomContentShowing = true; 1294 if (mCustomContentCallbacks != null) { 1295 mCustomContentCallbacks.onShow(false); 1296 mCustomContentShowTime = System.currentTimeMillis(); 1297 } 1298 } else if (hasCustomContent() && getNextPage() != 0 && mCustomContentShowing) { 1299 mCustomContentShowing = false; 1300 if (mCustomContentCallbacks != null) { 1301 mCustomContentCallbacks.onHide(); 1302 } 1303 } 1304 } 1305 1306 protected CustomContentCallbacks getCustomContentCallbacks() { 1307 return mCustomContentCallbacks; 1308 } 1309 1310 protected void setWallpaperDimension() { 1311 new AsyncTask<Void, Void, Void>() { 1312 public Void doInBackground(Void ... args) { 1313 if (Utilities.ATLEAST_KITKAT) { 1314 WallpaperUtils.suggestWallpaperDimension(mLauncher); 1315 } else { 1316 WallpaperUtils.suggestWallpaperDimensionPreK(mLauncher, 1317 mLauncher.overrideWallpaperDimensions()); 1318 } 1319 return null; 1320 } 1321 }.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, (Void) null); 1322 } 1323 1324 protected void snapToPage(int whichPage, Runnable r) { 1325 snapToPage(whichPage, SLOW_PAGE_SNAP_ANIMATION_DURATION, r); 1326 } 1327 1328 protected void snapToPage(int whichPage, int duration, Runnable r) { 1329 if (mDelayedSnapToPageRunnable != null) { 1330 mDelayedSnapToPageRunnable.run(); 1331 } 1332 mDelayedSnapToPageRunnable = r; 1333 snapToPage(whichPage, duration); 1334 } 1335 1336 public void snapToScreenId(long screenId) { 1337 snapToScreenId(screenId, null); 1338 } 1339 1340 protected void snapToScreenId(long screenId, Runnable r) { 1341 snapToPage(getPageIndexForScreenId(screenId), r); 1342 } 1343 1344 class WallpaperOffsetInterpolator implements Choreographer.FrameCallback { 1345 float mFinalOffset = 0.0f; 1346 float mCurrentOffset = 0.5f; // to force an initial update 1347 boolean mWaitingForUpdate; 1348 Choreographer mChoreographer; 1349 Interpolator mInterpolator; 1350 boolean mAnimating; 1351 long mAnimationStartTime; 1352 float mAnimationStartOffset; 1353 private final int ANIMATION_DURATION = 250; 1354 // Don't use all the wallpaper for parallax until you have at least this many pages 1355 private final int MIN_PARALLAX_PAGE_SPAN = 3; 1356 int mNumScreens; 1357 1358 public WallpaperOffsetInterpolator() { 1359 mChoreographer = Choreographer.getInstance(); 1360 mInterpolator = new DecelerateInterpolator(1.5f); 1361 } 1362 1363 @Override 1364 public void doFrame(long frameTimeNanos) { 1365 updateOffset(false); 1366 } 1367 1368 private void updateOffset(boolean force) { 1369 if (mWaitingForUpdate || force) { 1370 mWaitingForUpdate = false; 1371 if (computeScrollOffset() && mWindowToken != null) { 1372 try { 1373 mWallpaperManager.setWallpaperOffsets(mWindowToken, 1374 mWallpaperOffset.getCurrX(), 0.5f); 1375 setWallpaperOffsetSteps(); 1376 } catch (IllegalArgumentException e) { 1377 Log.e(TAG, "Error updating wallpaper offset: " + e); 1378 } 1379 } 1380 } 1381 } 1382 1383 public boolean computeScrollOffset() { 1384 final float oldOffset = mCurrentOffset; 1385 if (mAnimating) { 1386 long durationSinceAnimation = System.currentTimeMillis() - mAnimationStartTime; 1387 float t0 = durationSinceAnimation / (float) ANIMATION_DURATION; 1388 float t1 = mInterpolator.getInterpolation(t0); 1389 mCurrentOffset = mAnimationStartOffset + 1390 (mFinalOffset - mAnimationStartOffset) * t1; 1391 mAnimating = durationSinceAnimation < ANIMATION_DURATION; 1392 } else { 1393 mCurrentOffset = mFinalOffset; 1394 } 1395 1396 if (Math.abs(mCurrentOffset - mFinalOffset) > 0.0000001f) { 1397 scheduleUpdate(); 1398 } 1399 if (Math.abs(oldOffset - mCurrentOffset) > 0.0000001f) { 1400 return true; 1401 } 1402 return false; 1403 } 1404 1405 public float wallpaperOffsetForScroll(int scroll) { 1406 // TODO: do different behavior if it's a live wallpaper? 1407 // Don't use up all the wallpaper parallax until you have at least 1408 // MIN_PARALLAX_PAGE_SPAN pages 1409 int numScrollingPages = getNumScreensExcludingEmptyAndCustom(); 1410 int parallaxPageSpan; 1411 if (mWallpaperIsLiveWallpaper) { 1412 parallaxPageSpan = numScrollingPages - 1; 1413 } else { 1414 parallaxPageSpan = Math.max(MIN_PARALLAX_PAGE_SPAN, numScrollingPages - 1); 1415 } 1416 mNumPagesForWallpaperParallax = parallaxPageSpan; 1417 1418 if (getChildCount() <= 1) { 1419 if (mIsRtl) { 1420 return 1 - 1.0f/mNumPagesForWallpaperParallax; 1421 } 1422 return 0; 1423 } 1424 1425 // Exclude the leftmost page 1426 int emptyExtraPages = numEmptyScreensToIgnore(); 1427 int firstIndex = numCustomPages(); 1428 // Exclude the last extra empty screen (if we have > MIN_PARALLAX_PAGE_SPAN pages) 1429 int lastIndex = getChildCount() - 1 - emptyExtraPages; 1430 if (mIsRtl) { 1431 int temp = firstIndex; 1432 firstIndex = lastIndex; 1433 lastIndex = temp; 1434 } 1435 1436 int firstPageScrollX = getScrollForPage(firstIndex); 1437 int scrollRange = getScrollForPage(lastIndex) - firstPageScrollX; 1438 if (scrollRange == 0) { 1439 return 0; 1440 } else { 1441 // Sometimes the left parameter of the pages is animated during a layout transition; 1442 // this parameter offsets it to keep the wallpaper from animating as well 1443 int adjustedScroll = 1444 scroll - firstPageScrollX - getLayoutTransitionOffsetForPage(0); 1445 float offset = Math.min(1, adjustedScroll / (float) scrollRange); 1446 offset = Math.max(0, offset); 1447 1448 // On RTL devices, push the wallpaper offset to the right if we don't have enough 1449 // pages (ie if numScrollingPages < MIN_PARALLAX_PAGE_SPAN) 1450 if (!mWallpaperIsLiveWallpaper && numScrollingPages < MIN_PARALLAX_PAGE_SPAN 1451 && mIsRtl) { 1452 return offset * (parallaxPageSpan - numScrollingPages + 1) / parallaxPageSpan; 1453 } 1454 return offset * (numScrollingPages - 1) / parallaxPageSpan; 1455 } 1456 } 1457 1458 private float wallpaperOffsetForCurrentScroll() { 1459 return wallpaperOffsetForScroll(getScrollX()); 1460 } 1461 1462 private int numEmptyScreensToIgnore() { 1463 int numScrollingPages = getChildCount() - numCustomPages(); 1464 if (numScrollingPages >= MIN_PARALLAX_PAGE_SPAN && hasExtraEmptyScreen()) { 1465 return 1; 1466 } else { 1467 return 0; 1468 } 1469 } 1470 1471 private int getNumScreensExcludingEmptyAndCustom() { 1472 int numScrollingPages = getChildCount() - numEmptyScreensToIgnore() - numCustomPages(); 1473 return numScrollingPages; 1474 } 1475 1476 public void syncWithScroll() { 1477 float offset = wallpaperOffsetForCurrentScroll(); 1478 mWallpaperOffset.setFinalX(offset); 1479 updateOffset(true); 1480 } 1481 1482 public float getCurrX() { 1483 return mCurrentOffset; 1484 } 1485 1486 public float getFinalX() { 1487 return mFinalOffset; 1488 } 1489 1490 private void animateToFinal() { 1491 mAnimating = true; 1492 mAnimationStartOffset = mCurrentOffset; 1493 mAnimationStartTime = System.currentTimeMillis(); 1494 } 1495 1496 private void setWallpaperOffsetSteps() { 1497 // Set wallpaper offset steps (1 / (number of screens - 1)) 1498 float xOffset = 1.0f / mNumPagesForWallpaperParallax; 1499 if (xOffset != mLastSetWallpaperOffsetSteps) { 1500 mWallpaperManager.setWallpaperOffsetSteps(xOffset, 1.0f); 1501 mLastSetWallpaperOffsetSteps = xOffset; 1502 } 1503 } 1504 1505 public void setFinalX(float x) { 1506 scheduleUpdate(); 1507 mFinalOffset = Math.max(0f, Math.min(x, 1.0f)); 1508 if (getNumScreensExcludingEmptyAndCustom() != mNumScreens) { 1509 if (mNumScreens > 0) { 1510 // Don't animate if we're going from 0 screens 1511 animateToFinal(); 1512 } 1513 mNumScreens = getNumScreensExcludingEmptyAndCustom(); 1514 } 1515 } 1516 1517 private void scheduleUpdate() { 1518 if (!mWaitingForUpdate) { 1519 mChoreographer.postFrameCallback(this); 1520 mWaitingForUpdate = true; 1521 } 1522 } 1523 1524 public void jumpToFinal() { 1525 mCurrentOffset = mFinalOffset; 1526 } 1527 } 1528 1529 @Override 1530 public void computeScroll() { 1531 super.computeScroll(); 1532 mWallpaperOffset.syncWithScroll(); 1533 } 1534 1535 @Override 1536 public void announceForAccessibility(CharSequence text) { 1537 // Don't announce if apps is on top of us. 1538 if (!mLauncher.isAppsViewVisible()) { 1539 super.announceForAccessibility(text); 1540 } 1541 } 1542 1543 public void showOutlinesTemporarily() { 1544 if (!mIsPageMoving && !isTouchActive()) { 1545 snapToPage(mCurrentPage); 1546 } 1547 } 1548 1549 float backgroundAlphaInterpolator(float r) { 1550 float pivotA = 0.1f; 1551 float pivotB = 0.4f; 1552 if (r < pivotA) { 1553 return 0; 1554 } else if (r > pivotB) { 1555 return 1.0f; 1556 } else { 1557 return (r - pivotA)/(pivotB - pivotA); 1558 } 1559 } 1560 1561 private void updatePageAlphaValues(int screenCenter) { 1562 if (mWorkspaceFadeInAdjacentScreens && 1563 !workspaceInModalState() && 1564 !mIsSwitchingState) { 1565 for (int i = numCustomPages(); i < getChildCount(); i++) { 1566 CellLayout child = (CellLayout) getChildAt(i); 1567 if (child != null) { 1568 float scrollProgress = getScrollProgress(screenCenter, child, i); 1569 float alpha = 1 - Math.abs(scrollProgress); 1570 child.getShortcutsAndWidgets().setAlpha(alpha); 1571 } 1572 } 1573 } 1574 } 1575 1576 @TargetApi(Build.VERSION_CODES.LOLLIPOP) 1577 @Override 1578 public void enableAccessibleDrag(boolean enable) { 1579 for (int i = 0; i < getChildCount(); i++) { 1580 CellLayout child = (CellLayout) getChildAt(i); 1581 child.enableAccessibleDrag(enable, CellLayout.WORKSPACE_ACCESSIBILITY_DRAG); 1582 } 1583 1584 if (enable) { 1585 // We need to allow our individual children to become click handlers in this case 1586 setOnClickListener(null); 1587 } else { 1588 // Reset our click listener 1589 setOnClickListener(mLauncher); 1590 } 1591 mLauncher.getSearchDropTargetBar().enableAccessibleDrag(enable); 1592 mLauncher.getHotseat().getLayout() 1593 .enableAccessibleDrag(enable, CellLayout.WORKSPACE_ACCESSIBILITY_DRAG); 1594 } 1595 1596 public boolean hasCustomContent() { 1597 return (mScreenOrder.size() > 0 && mScreenOrder.get(0) == CUSTOM_CONTENT_SCREEN_ID); 1598 } 1599 1600 public int numCustomPages() { 1601 return hasCustomContent() ? 1 : 0; 1602 } 1603 1604 public boolean isOnOrMovingToCustomContent() { 1605 return hasCustomContent() && getNextPage() == 0; 1606 } 1607 1608 private void updateStateForCustomContent(int screenCenter) { 1609 float translationX = 0; 1610 float progress = 0; 1611 if (hasCustomContent()) { 1612 int index = mScreenOrder.indexOf(CUSTOM_CONTENT_SCREEN_ID); 1613 1614 int scrollDelta = getScrollX() - getScrollForPage(index) - 1615 getLayoutTransitionOffsetForPage(index); 1616 float scrollRange = getScrollForPage(index + 1) - getScrollForPage(index); 1617 translationX = scrollRange - scrollDelta; 1618 progress = (scrollRange - scrollDelta) / scrollRange; 1619 1620 if (mIsRtl) { 1621 translationX = Math.min(0, translationX); 1622 } else { 1623 translationX = Math.max(0, translationX); 1624 } 1625 progress = Math.max(0, progress); 1626 } 1627 1628 if (Float.compare(progress, mLastCustomContentScrollProgress) == 0) return; 1629 1630 CellLayout cc = mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID); 1631 if (progress > 0 && cc.getVisibility() != VISIBLE && !workspaceInModalState()) { 1632 cc.setVisibility(VISIBLE); 1633 } 1634 1635 mLastCustomContentScrollProgress = progress; 1636 1637 // We should only update the drag layer background alpha if we are not in all apps or the 1638 // widgets tray 1639 if (mState == State.NORMAL) { 1640 mLauncher.getDragLayer().setBackgroundAlpha(progress == 1 ? 0 : progress * 0.8f); 1641 } 1642 1643 if (mLauncher.getHotseat() != null) { 1644 mLauncher.getHotseat().setTranslationX(translationX); 1645 } 1646 1647 if (getPageIndicator() != null) { 1648 getPageIndicator().setTranslationX(translationX); 1649 } 1650 1651 if (mCustomContentCallbacks != null) { 1652 mCustomContentCallbacks.onScrollProgressChanged(progress); 1653 } 1654 } 1655 1656 @Override 1657 protected OnClickListener getPageIndicatorClickListener() { 1658 AccessibilityManager am = (AccessibilityManager) 1659 getContext().getSystemService(Context.ACCESSIBILITY_SERVICE); 1660 if (!am.isTouchExplorationEnabled()) { 1661 return null; 1662 } 1663 OnClickListener listener = new OnClickListener() { 1664 @Override 1665 public void onClick(View arg0) { 1666 mLauncher.showOverviewMode(true); 1667 } 1668 }; 1669 return listener; 1670 } 1671 1672 @Override 1673 protected void screenScrolled(int screenCenter) { 1674 updatePageAlphaValues(screenCenter); 1675 updateStateForCustomContent(screenCenter); 1676 enableHwLayersOnVisiblePages(); 1677 } 1678 1679 protected void onAttachedToWindow() { 1680 super.onAttachedToWindow(); 1681 mWindowToken = getWindowToken(); 1682 computeScroll(); 1683 mDragController.setWindowToken(mWindowToken); 1684 } 1685 1686 protected void onDetachedFromWindow() { 1687 super.onDetachedFromWindow(); 1688 mWindowToken = null; 1689 } 1690 1691 protected void onResume() { 1692 if (getPageIndicator() != null) { 1693 // In case accessibility state has changed, we need to perform this on every 1694 // attach to window 1695 OnClickListener listener = getPageIndicatorClickListener(); 1696 if (listener != null) { 1697 getPageIndicator().setOnClickListener(listener); 1698 } 1699 } 1700 1701 // Update wallpaper dimensions if they were changed since last onResume 1702 // (we also always set the wallpaper dimensions in the constructor) 1703 if (LauncherAppState.getInstance().hasWallpaperChangedSinceLastCheck()) { 1704 setWallpaperDimension(); 1705 } 1706 mWallpaperIsLiveWallpaper = mWallpaperManager.getWallpaperInfo() != null; 1707 // Force the wallpaper offset steps to be set again, because another app might have changed 1708 // them 1709 mLastSetWallpaperOffsetSteps = 0f; 1710 } 1711 1712 @Override 1713 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1714 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1715 mWallpaperOffset.syncWithScroll(); 1716 mWallpaperOffset.jumpToFinal(); 1717 } 1718 super.onLayout(changed, left, top, right, bottom); 1719 } 1720 1721 @Override 1722 protected void onDraw(Canvas canvas) { 1723 super.onDraw(canvas); 1724 1725 // Call back to LauncherModel to finish binding after the first draw 1726 post(mBindPages); 1727 } 1728 1729 @Override 1730 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1731 if (!mLauncher.isAppsViewVisible()) { 1732 final Folder openFolder = getOpenFolder(); 1733 if (openFolder != null) { 1734 return openFolder.requestFocus(direction, previouslyFocusedRect); 1735 } else { 1736 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1737 } 1738 } 1739 return false; 1740 } 1741 1742 @Override 1743 public int getDescendantFocusability() { 1744 if (workspaceInModalState()) { 1745 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1746 } 1747 return super.getDescendantFocusability(); 1748 } 1749 1750 @Override 1751 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1752 if (!mLauncher.isAppsViewVisible()) { 1753 final Folder openFolder = getOpenFolder(); 1754 if (openFolder != null) { 1755 openFolder.addFocusables(views, direction); 1756 } else { 1757 super.addFocusables(views, direction, focusableMode); 1758 } 1759 } 1760 } 1761 1762 public boolean workspaceInModalState() { 1763 return mState != State.NORMAL; 1764 } 1765 1766 void enableChildrenCache(int fromPage, int toPage) { 1767 if (fromPage > toPage) { 1768 final int temp = fromPage; 1769 fromPage = toPage; 1770 toPage = temp; 1771 } 1772 1773 final int screenCount = getChildCount(); 1774 1775 fromPage = Math.max(fromPage, 0); 1776 toPage = Math.min(toPage, screenCount - 1); 1777 1778 for (int i = fromPage; i <= toPage; i++) { 1779 final CellLayout layout = (CellLayout) getChildAt(i); 1780 layout.setChildrenDrawnWithCacheEnabled(true); 1781 layout.setChildrenDrawingCacheEnabled(true); 1782 } 1783 } 1784 1785 void clearChildrenCache() { 1786 final int screenCount = getChildCount(); 1787 for (int i = 0; i < screenCount; i++) { 1788 final CellLayout layout = (CellLayout) getChildAt(i); 1789 layout.setChildrenDrawnWithCacheEnabled(false); 1790 // In software mode, we don't want the items to continue to be drawn into bitmaps 1791 if (!isHardwareAccelerated()) { 1792 layout.setChildrenDrawingCacheEnabled(false); 1793 } 1794 } 1795 } 1796 1797 @Thunk void updateChildrenLayersEnabled(boolean force) { 1798 boolean small = mState == State.OVERVIEW || mIsSwitchingState; 1799 boolean enableChildrenLayers = force || small || mAnimatingViewIntoPlace || isPageMoving(); 1800 1801 if (enableChildrenLayers != mChildrenLayersEnabled) { 1802 mChildrenLayersEnabled = enableChildrenLayers; 1803 if (mChildrenLayersEnabled) { 1804 enableHwLayersOnVisiblePages(); 1805 } else { 1806 for (int i = 0; i < getPageCount(); i++) { 1807 final CellLayout cl = (CellLayout) getChildAt(i); 1808 cl.enableHardwareLayer(false); 1809 } 1810 } 1811 } 1812 } 1813 1814 private void enableHwLayersOnVisiblePages() { 1815 if (mChildrenLayersEnabled) { 1816 final int screenCount = getChildCount(); 1817 getVisiblePages(mTempVisiblePagesRange); 1818 int leftScreen = mTempVisiblePagesRange[0]; 1819 int rightScreen = mTempVisiblePagesRange[1]; 1820 if (leftScreen == rightScreen) { 1821 // make sure we're caching at least two pages always 1822 if (rightScreen < screenCount - 1) { 1823 rightScreen++; 1824 } else if (leftScreen > 0) { 1825 leftScreen--; 1826 } 1827 } 1828 1829 final CellLayout customScreen = mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID); 1830 for (int i = 0; i < screenCount; i++) { 1831 final CellLayout layout = (CellLayout) getPageAt(i); 1832 1833 // enable layers between left and right screen inclusive, except for the 1834 // customScreen, which may animate its content during transitions. 1835 boolean enableLayer = layout != customScreen && 1836 leftScreen <= i && i <= rightScreen && shouldDrawChild(layout); 1837 layout.enableHardwareLayer(enableLayer); 1838 } 1839 } 1840 } 1841 1842 public void buildPageHardwareLayers() { 1843 // force layers to be enabled just for the call to buildLayer 1844 updateChildrenLayersEnabled(true); 1845 if (getWindowToken() != null) { 1846 final int childCount = getChildCount(); 1847 for (int i = 0; i < childCount; i++) { 1848 CellLayout cl = (CellLayout) getChildAt(i); 1849 cl.buildHardwareLayer(); 1850 } 1851 } 1852 updateChildrenLayersEnabled(false); 1853 } 1854 1855 @Override 1856 protected void getVisiblePages(int[] range) { 1857 super.getVisiblePages(range); 1858 if (mForceDrawAdjacentPages) { 1859 // In overview mode, make sure that the two side pages are visible. 1860 range[0] = Utilities.boundInRange(getCurrentPage() - 1, numCustomPages(), range[1]); 1861 range[1] = Utilities.boundInRange(getCurrentPage() + 1, range[0], getPageCount() - 1); 1862 } 1863 } 1864 1865 protected void onWallpaperTap(MotionEvent ev) { 1866 final int[] position = mTempXY; 1867 getLocationOnScreen(position); 1868 1869 int pointerIndex = ev.getActionIndex(); 1870 position[0] += (int) ev.getX(pointerIndex); 1871 position[1] += (int) ev.getY(pointerIndex); 1872 1873 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1874 ev.getAction() == MotionEvent.ACTION_UP 1875 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1876 position[0], position[1], 0, null); 1877 } 1878 1879 /* 1880 * 1881 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1882 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1883 * 1884 * These methods mark the appropriate pages as accepting drops (which alters their visual 1885 * appearance). 1886 * 1887 */ 1888 private static Rect getDrawableBounds(Drawable d) { 1889 Rect bounds = new Rect(); 1890 d.copyBounds(bounds); 1891 if (bounds.width() == 0 || bounds.height() == 0) { 1892 bounds.set(0, 0, d.getIntrinsicWidth(), d.getIntrinsicHeight()); 1893 } else { 1894 bounds.offsetTo(0, 0); 1895 } 1896 if (d instanceof PreloadIconDrawable) { 1897 int inset = -((PreloadIconDrawable) d).getOutset(); 1898 bounds.inset(inset, inset); 1899 } 1900 return bounds; 1901 } 1902 1903 public void onExternalDragStartedWithItem(View v) { 1904 // Compose a drag bitmap with the view scaled to the icon size 1905 DeviceProfile grid = mLauncher.getDeviceProfile(); 1906 int iconSize = grid.iconSizePx; 1907 int bmpWidth = v.getMeasuredWidth(); 1908 int bmpHeight = v.getMeasuredHeight(); 1909 1910 // If this is a text view, use its drawable instead 1911 if (v instanceof TextView) { 1912 Drawable d = getTextViewIcon((TextView) v); 1913 Rect bounds = getDrawableBounds(d); 1914 bmpWidth = bounds.width(); 1915 bmpHeight = bounds.height(); 1916 } 1917 1918 // Compose the bitmap to create the icon from 1919 Bitmap b = Bitmap.createBitmap(bmpWidth, bmpHeight, 1920 Bitmap.Config.ARGB_8888); 1921 mCanvas.setBitmap(b); 1922 drawDragView(v, mCanvas, 0); 1923 mCanvas.setBitmap(null); 1924 1925 // The outline is used to visualize where the item will land if dropped 1926 mDragOutline = createDragOutline(b, DRAG_BITMAP_PADDING, iconSize, iconSize, true); 1927 } 1928 1929 public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, boolean clipAlpha) { 1930 // Find a page that has enough space to place this widget (after rearranging/resizing). 1931 // Start at the current page and search right (on LTR) until finding a page with enough 1932 // space. Since an empty screen is the furthest right, a page must be found. 1933 int currentPageInOverview = getPageNearestToCenterOfScreen(); 1934 for (int pageIndex = currentPageInOverview; pageIndex < getPageCount(); pageIndex++) { 1935 CellLayout page = (CellLayout) getPageAt(pageIndex); 1936 if (page.hasReorderSolution(info)) { 1937 setCurrentPage(pageIndex); 1938 break; 1939 } 1940 } 1941 1942 int[] size = estimateItemSize(info, false); 1943 1944 // The outline is used to visualize where the item will land if dropped 1945 mDragOutline = createDragOutline(b, DRAG_BITMAP_PADDING, size[0], size[1], clipAlpha); 1946 } 1947 1948 public void exitWidgetResizeMode() { 1949 DragLayer dragLayer = mLauncher.getDragLayer(); 1950 dragLayer.clearAllResizeFrames(); 1951 } 1952 1953 @Override 1954 protected void getFreeScrollPageRange(int[] range) { 1955 getOverviewModePages(range); 1956 } 1957 1958 private void getOverviewModePages(int[] range) { 1959 int start = numCustomPages(); 1960 int end = getChildCount() - 1; 1961 1962 range[0] = Math.max(0, Math.min(start, getChildCount() - 1)); 1963 range[1] = Math.max(0, end); 1964 } 1965 1966 public void onStartReordering() { 1967 super.onStartReordering(); 1968 // Reordering handles its own animations, disable the automatic ones. 1969 disableLayoutTransitions(); 1970 } 1971 1972 public void onEndReordering() { 1973 super.onEndReordering(); 1974 1975 if (mLauncher.isWorkspaceLoading()) { 1976 // Invalid and dangerous operation if workspace is loading 1977 return; 1978 } 1979 1980 mScreenOrder.clear(); 1981 int count = getChildCount(); 1982 for (int i = 0; i < count; i++) { 1983 CellLayout cl = ((CellLayout) getChildAt(i)); 1984 mScreenOrder.add(getIdForScreen(cl)); 1985 } 1986 1987 mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); 1988 1989 // Re-enable auto layout transitions for page deletion. 1990 enableLayoutTransitions(); 1991 } 1992 1993 public boolean isInOverviewMode() { 1994 return mState == State.OVERVIEW; 1995 } 1996 1997 public void snapToPageFromOverView(int whichPage) { 1998 mStateTransitionAnimation.snapToPageFromOverView(whichPage); 1999 } 2000 2001 int getOverviewModeTranslationY() { 2002 DeviceProfile grid = mLauncher.getDeviceProfile(); 2003 Rect workspacePadding = grid.getWorkspacePadding(Utilities.isRtl(getResources())); 2004 int overviewButtonBarHeight = grid.getOverviewModeButtonBarHeight(); 2005 2006 int scaledHeight = (int) (mOverviewModeShrinkFactor * getNormalChildHeight()); 2007 int workspaceTop = mInsets.top + workspacePadding.top; 2008 int workspaceBottom = getViewportHeight() - mInsets.bottom - workspacePadding.bottom; 2009 int overviewTop = mInsets.top; 2010 int overviewBottom = getViewportHeight() - mInsets.bottom - overviewButtonBarHeight; 2011 int workspaceOffsetTopEdge = workspaceTop + ((workspaceBottom - workspaceTop) - scaledHeight) / 2; 2012 int overviewOffsetTopEdge = overviewTop + (overviewBottom - overviewTop - scaledHeight) / 2; 2013 return -workspaceOffsetTopEdge + overviewOffsetTopEdge; 2014 } 2015 2016 /** 2017 * Sets the current workspace {@link State}, returning an animation transitioning the workspace 2018 * to that new state. 2019 */ 2020 public Animator setStateWithAnimation(State toState, boolean animated, 2021 HashMap<View, Integer> layerViews) { 2022 // Create the animation to the new state 2023 Animator workspaceAnim = mStateTransitionAnimation.getAnimationToState(mState, 2024 toState, animated, layerViews); 2025 2026 // Update the current state 2027 mState = toState; 2028 updateAccessibilityFlags(); 2029 if (mState == State.OVERVIEW || mState == State.SPRING_LOADED) { 2030 // Redraw pages, as we might want to draw pages which were not visible. 2031 mForceDrawAdjacentPages = true; 2032 invalidate(); // This will call dispatchDraw(), which calls getVisiblePages(). 2033 } 2034 2035 return workspaceAnim; 2036 } 2037 2038 State getState() { 2039 return mState; 2040 } 2041 2042 public void updateAccessibilityFlags() { 2043 if (Utilities.ATLEAST_LOLLIPOP) { 2044 int total = getPageCount(); 2045 for (int i = numCustomPages(); i < total; i++) { 2046 updateAccessibilityFlags((CellLayout) getPageAt(i), i); 2047 } 2048 setImportantForAccessibility((mState == State.NORMAL || mState == State.OVERVIEW) 2049 ? IMPORTANT_FOR_ACCESSIBILITY_AUTO 2050 : IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS); 2051 } else { 2052 int accessible = mState == State.NORMAL ? 2053 IMPORTANT_FOR_ACCESSIBILITY_AUTO : 2054 IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS; 2055 setImportantForAccessibility(accessible); 2056 } 2057 } 2058 2059 private void updateAccessibilityFlags(CellLayout page, int pageNo) { 2060 if (mState == State.OVERVIEW) { 2061 page.setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_YES); 2062 page.getShortcutsAndWidgets().setImportantForAccessibility( 2063 IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS); 2064 page.setContentDescription(getPageDescription(pageNo)); 2065 2066 if (mPagesAccessibilityDelegate == null) { 2067 mPagesAccessibilityDelegate = new OverviewScreenAccessibilityDelegate(this); 2068 } 2069 page.setAccessibilityDelegate(mPagesAccessibilityDelegate); 2070 } else { 2071 int accessible = mState == State.NORMAL ? 2072 IMPORTANT_FOR_ACCESSIBILITY_AUTO : 2073 IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS; 2074 page.setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_NO); 2075 page.getShortcutsAndWidgets().setImportantForAccessibility(accessible); 2076 page.setContentDescription(null); 2077 page.setAccessibilityDelegate(null); 2078 } 2079 } 2080 2081 @Override 2082 public void onLauncherTransitionPrepare(Launcher l, boolean animated, boolean toWorkspace) { 2083 mIsSwitchingState = true; 2084 2085 // Invalidate here to ensure that the pages are rendered during the state change transition. 2086 invalidate(); 2087 2088 updateChildrenLayersEnabled(false); 2089 hideCustomContentIfNecessary(); 2090 } 2091 2092 @Override 2093 public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) { 2094 } 2095 2096 @Override 2097 public void onLauncherTransitionStep(Launcher l, float t) { 2098 mTransitionProgress = t; 2099 } 2100 2101 @Override 2102 public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) { 2103 mIsSwitchingState = false; 2104 updateChildrenLayersEnabled(false); 2105 showCustomContentIfNecessary(); 2106 mForceDrawAdjacentPages = false; 2107 } 2108 2109 void updateCustomContentVisibility() { 2110 int visibility = mState == Workspace.State.NORMAL ? VISIBLE : INVISIBLE; 2111 if (hasCustomContent()) { 2112 mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID).setVisibility(visibility); 2113 } 2114 } 2115 2116 void showCustomContentIfNecessary() { 2117 boolean show = mState == Workspace.State.NORMAL; 2118 if (show && hasCustomContent()) { 2119 mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID).setVisibility(VISIBLE); 2120 } 2121 } 2122 2123 void hideCustomContentIfNecessary() { 2124 boolean hide = mState != Workspace.State.NORMAL; 2125 if (hide && hasCustomContent()) { 2126 disableLayoutTransitions(); 2127 mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID).setVisibility(INVISIBLE); 2128 enableLayoutTransitions(); 2129 } 2130 } 2131 2132 /** 2133 * Returns the drawable for the given text view. 2134 */ 2135 public static Drawable getTextViewIcon(TextView tv) { 2136 final Drawable[] drawables = tv.getCompoundDrawables(); 2137 for (int i = 0; i < drawables.length; i++) { 2138 if (drawables[i] != null) { 2139 return drawables[i]; 2140 } 2141 } 2142 return null; 2143 } 2144 2145 /** 2146 * Draw the View v into the given Canvas. 2147 * 2148 * @param v the view to draw 2149 * @param destCanvas the canvas to draw on 2150 * @param padding the horizontal and vertical padding to use when drawing 2151 */ 2152 private static void drawDragView(View v, Canvas destCanvas, int padding) { 2153 destCanvas.save(); 2154 if (v instanceof TextView) { 2155 Drawable d = getTextViewIcon((TextView) v); 2156 Rect bounds = getDrawableBounds(d); 2157 destCanvas.translate(padding / 2 - bounds.left, padding / 2 - bounds.top); 2158 d.draw(destCanvas); 2159 } else { 2160 final Rect clipRect = sTempRect; 2161 v.getDrawingRect(clipRect); 2162 2163 boolean textVisible = false; 2164 if (v instanceof FolderIcon) { 2165 // For FolderIcons the text can bleed into the icon area, and so we need to 2166 // hide the text completely (which can't be achieved by clipping). 2167 if (((FolderIcon) v).getTextVisible()) { 2168 ((FolderIcon) v).setTextVisible(false); 2169 textVisible = true; 2170 } 2171 } 2172 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 2173 destCanvas.clipRect(clipRect, Op.REPLACE); 2174 v.draw(destCanvas); 2175 2176 // Restore text visibility of FolderIcon if necessary 2177 if (textVisible) { 2178 ((FolderIcon) v).setTextVisible(true); 2179 } 2180 } 2181 destCanvas.restore(); 2182 } 2183 2184 /** 2185 * Returns a new bitmap to show when the given View is being dragged around. 2186 * Responsibility for the bitmap is transferred to the caller. 2187 * @param expectedPadding padding to add to the drag view. If a different padding was used 2188 * its value will be changed 2189 */ 2190 public Bitmap createDragBitmap(View v, AtomicInteger expectedPadding) { 2191 Bitmap b; 2192 2193 int padding = expectedPadding.get(); 2194 if (v instanceof TextView) { 2195 Drawable d = getTextViewIcon((TextView) v); 2196 Rect bounds = getDrawableBounds(d); 2197 b = Bitmap.createBitmap(bounds.width() + padding, 2198 bounds.height() + padding, Bitmap.Config.ARGB_8888); 2199 expectedPadding.set(padding - bounds.left - bounds.top); 2200 } else { 2201 b = Bitmap.createBitmap( 2202 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 2203 } 2204 2205 mCanvas.setBitmap(b); 2206 drawDragView(v, mCanvas, padding); 2207 mCanvas.setBitmap(null); 2208 2209 return b; 2210 } 2211 2212 /** 2213 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2214 * Responsibility for the bitmap is transferred to the caller. 2215 */ 2216 private Bitmap createDragOutline(View v, int padding) { 2217 final int outlineColor = getResources().getColor(R.color.outline_color); 2218 final Bitmap b = Bitmap.createBitmap( 2219 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 2220 2221 mCanvas.setBitmap(b); 2222 drawDragView(v, mCanvas, padding); 2223 mOutlineHelper.applyExpensiveOutlineWithBlur(b, mCanvas, outlineColor, outlineColor); 2224 mCanvas.setBitmap(null); 2225 return b; 2226 } 2227 2228 /** 2229 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2230 * Responsibility for the bitmap is transferred to the caller. 2231 */ 2232 private Bitmap createDragOutline(Bitmap orig, int padding, int w, int h, 2233 boolean clipAlpha) { 2234 final int outlineColor = getResources().getColor(R.color.outline_color); 2235 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 2236 mCanvas.setBitmap(b); 2237 2238 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 2239 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 2240 (h - padding) / (float) orig.getHeight()); 2241 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 2242 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 2243 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 2244 2245 // center the image 2246 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 2247 2248 mCanvas.drawBitmap(orig, src, dst, null); 2249 mOutlineHelper.applyExpensiveOutlineWithBlur(b, mCanvas, outlineColor, outlineColor, 2250 clipAlpha); 2251 mCanvas.setBitmap(null); 2252 2253 return b; 2254 } 2255 2256 public void startDrag(CellLayout.CellInfo cellInfo) { 2257 startDrag(cellInfo, false); 2258 } 2259 2260 @Override 2261 public void startDrag(CellLayout.CellInfo cellInfo, boolean accessible) { 2262 View child = cellInfo.cell; 2263 2264 // Make sure the drag was started by a long press as opposed to a long click. 2265 if (!child.isInTouchMode()) { 2266 return; 2267 } 2268 2269 mDragInfo = cellInfo; 2270 child.setVisibility(INVISIBLE); 2271 CellLayout layout = (CellLayout) child.getParent().getParent(); 2272 layout.prepareChildForDrag(child); 2273 2274 beginDragShared(child, this, accessible); 2275 } 2276 2277 public void beginDragShared(View child, DragSource source, boolean accessible) { 2278 beginDragShared(child, new Point(), source, accessible); 2279 } 2280 2281 public void beginDragShared(View child, Point relativeTouchPos, DragSource source, 2282 boolean accessible) { 2283 child.clearFocus(); 2284 child.setPressed(false); 2285 2286 // The outline is used to visualize where the item will land if dropped 2287 mDragOutline = createDragOutline(child, DRAG_BITMAP_PADDING); 2288 2289 mLauncher.onDragStarted(child); 2290 // The drag bitmap follows the touch point around on the screen 2291 AtomicInteger padding = new AtomicInteger(DRAG_BITMAP_PADDING); 2292 final Bitmap b = createDragBitmap(child, padding); 2293 2294 final int bmpWidth = b.getWidth(); 2295 final int bmpHeight = b.getHeight(); 2296 2297 float scale = mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 2298 int dragLayerX = Math.round(mTempXY[0] - (bmpWidth - scale * child.getWidth()) / 2); 2299 int dragLayerY = Math.round(mTempXY[1] - (bmpHeight - scale * bmpHeight) / 2 2300 - padding.get() / 2); 2301 2302 DeviceProfile grid = mLauncher.getDeviceProfile(); 2303 Point dragVisualizeOffset = null; 2304 Rect dragRect = null; 2305 if (child instanceof BubbleTextView) { 2306 BubbleTextView icon = (BubbleTextView) child; 2307 int iconSize = grid.iconSizePx; 2308 int top = child.getPaddingTop(); 2309 int left = (bmpWidth - iconSize) / 2; 2310 int right = left + iconSize; 2311 int bottom = top + iconSize; 2312 if (icon.isLayoutHorizontal()) { 2313 // If the layout is horizontal, then if we are just picking up the icon, then just 2314 // use the child position since the icon is top-left aligned. Otherwise, offset 2315 // the drag layer position horizontally so that the icon is under the current 2316 // touch position. 2317 if (icon.getIcon().getBounds().contains(relativeTouchPos.x, relativeTouchPos.y)) { 2318 dragLayerX = Math.round(mTempXY[0]); 2319 } else { 2320 dragLayerX = Math.round(mTempXY[0] + relativeTouchPos.x - (bmpWidth / 2)); 2321 } 2322 } 2323 dragLayerY += top; 2324 // Note: The drag region is used to calculate drag layer offsets, but the 2325 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 2326 dragVisualizeOffset = new Point(-padding.get() / 2, padding.get() / 2); 2327 dragRect = new Rect(left, top, right, bottom); 2328 } else if (child instanceof FolderIcon) { 2329 int previewSize = grid.folderIconSizePx; 2330 dragVisualizeOffset = new Point(-padding.get() / 2, 2331 padding.get() / 2 - child.getPaddingTop()); 2332 dragRect = new Rect(0, child.getPaddingTop(), child.getWidth(), previewSize); 2333 } 2334 2335 // Clear the pressed state if necessary 2336 if (child instanceof BubbleTextView) { 2337 BubbleTextView icon = (BubbleTextView) child; 2338 icon.clearPressedBackground(); 2339 } 2340 2341 Object dragObject = child.getTag(); 2342 if (!(dragObject instanceof ItemInfo)) { 2343 String msg = "Drag started with a view that has no tag set. This " 2344 + "will cause a crash (issue 11627249) down the line. " 2345 + "View: " + child + " tag: " + child.getTag(); 2346 throw new IllegalStateException(msg); 2347 } 2348 2349 if (child.getParent() instanceof ShortcutAndWidgetContainer) { 2350 mDragSourceInternal = (ShortcutAndWidgetContainer) child.getParent(); 2351 } 2352 2353 DragView dv = mDragController.startDrag(b, dragLayerX, dragLayerY, source, 2354 (ItemInfo) dragObject, DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, 2355 dragRect, scale, accessible); 2356 dv.setIntrinsicIconScaleFactor(source.getIntrinsicIconScaleFactor()); 2357 2358 b.recycle(); 2359 } 2360 2361 public void beginExternalDragShared(View child, DragSource source) { 2362 DeviceProfile grid = mLauncher.getDeviceProfile(); 2363 int iconSize = grid.iconSizePx; 2364 2365 // Notify launcher of drag start 2366 mLauncher.onDragStarted(child); 2367 2368 // Compose a new drag bitmap that is of the icon size 2369 AtomicInteger padding = new AtomicInteger(DRAG_BITMAP_PADDING); 2370 final Bitmap tmpB = createDragBitmap(child, padding); 2371 Bitmap b = Bitmap.createBitmap(iconSize, iconSize, Bitmap.Config.ARGB_8888); 2372 Paint p = new Paint(); 2373 p.setFilterBitmap(true); 2374 mCanvas.setBitmap(b); 2375 mCanvas.drawBitmap(tmpB, new Rect(0, 0, tmpB.getWidth(), tmpB.getHeight()), 2376 new Rect(0, 0, iconSize, iconSize), p); 2377 mCanvas.setBitmap(null); 2378 2379 // Find the child's location on the screen 2380 int bmpWidth = tmpB.getWidth(); 2381 float iconScale = (float) bmpWidth / iconSize; 2382 float scale = mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY) * iconScale; 2383 int dragLayerX = Math.round(mTempXY[0] - (bmpWidth - scale * child.getWidth()) / 2); 2384 int dragLayerY = Math.round(mTempXY[1]); 2385 2386 // Note: The drag region is used to calculate drag layer offsets, but the 2387 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 2388 Point dragVisualizeOffset = new Point(-padding.get() / 2, padding.get() / 2); 2389 Rect dragRect = new Rect(0, 0, iconSize, iconSize); 2390 2391 Object dragObject = child.getTag(); 2392 if (!(dragObject instanceof ItemInfo)) { 2393 String msg = "Drag started with a view that has no tag set. This " 2394 + "will cause a crash (issue 11627249) down the line. " 2395 + "View: " + child + " tag: " + child.getTag(); 2396 throw new IllegalStateException(msg); 2397 } 2398 2399 // Start the drag 2400 DragView dv = mDragController.startDrag(b, dragLayerX, dragLayerY, source, 2401 (ItemInfo) dragObject, DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, 2402 dragRect, scale, false); 2403 dv.setIntrinsicIconScaleFactor(source.getIntrinsicIconScaleFactor()); 2404 2405 // Recycle temporary bitmaps 2406 tmpB.recycle(); 2407 } 2408 2409 public boolean transitionStateShouldAllowDrop() { 2410 return ((!isSwitchingState() || mTransitionProgress > 0.5f) && 2411 (mState == State.NORMAL || mState == State.SPRING_LOADED)); 2412 } 2413 2414 /** 2415 * {@inheritDoc} 2416 */ 2417 public boolean acceptDrop(DragObject d) { 2418 // If it's an external drop (e.g. from All Apps), check if it should be accepted 2419 CellLayout dropTargetLayout = mDropToLayout; 2420 if (d.dragSource != this) { 2421 // Don't accept the drop if we're not over a screen at time of drop 2422 if (dropTargetLayout == null) { 2423 return false; 2424 } 2425 if (!transitionStateShouldAllowDrop()) return false; 2426 2427 mDragViewVisualCenter = d.getVisualCenter(mDragViewVisualCenter); 2428 2429 // We want the point to be mapped to the dragTarget. 2430 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 2431 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2432 } else { 2433 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter); 2434 } 2435 2436 int spanX = 1; 2437 int spanY = 1; 2438 if (mDragInfo != null) { 2439 final CellLayout.CellInfo dragCellInfo = mDragInfo; 2440 spanX = dragCellInfo.spanX; 2441 spanY = dragCellInfo.spanY; 2442 } else { 2443 spanX = d.dragInfo.spanX; 2444 spanY = d.dragInfo.spanY; 2445 } 2446 2447 int minSpanX = spanX; 2448 int minSpanY = spanY; 2449 if (d.dragInfo instanceof PendingAddWidgetInfo) { 2450 minSpanX = ((PendingAddWidgetInfo) d.dragInfo).minSpanX; 2451 minSpanY = ((PendingAddWidgetInfo) d.dragInfo).minSpanY; 2452 } 2453 2454 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2455 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, dropTargetLayout, 2456 mTargetCell); 2457 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2458 mDragViewVisualCenter[1], mTargetCell); 2459 if (mCreateUserFolderOnDrop && willCreateUserFolder(d.dragInfo, 2460 dropTargetLayout, mTargetCell, distance, true)) { 2461 return true; 2462 } 2463 2464 if (mAddToExistingFolderOnDrop && willAddToExistingUserFolder(d.dragInfo, 2465 dropTargetLayout, mTargetCell, distance)) { 2466 return true; 2467 } 2468 2469 int[] resultSpan = new int[2]; 2470 mTargetCell = dropTargetLayout.performReorder((int) mDragViewVisualCenter[0], 2471 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2472 null, mTargetCell, resultSpan, CellLayout.MODE_ACCEPT_DROP); 2473 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2474 2475 // Don't accept the drop if there's no room for the item 2476 if (!foundCell) { 2477 // Don't show the message if we are dropping on the AllApps button and the hotseat 2478 // is full 2479 boolean isHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2480 if (mTargetCell != null && isHotseat) { 2481 Hotseat hotseat = mLauncher.getHotseat(); 2482 if (hotseat.isAllAppsButtonRank( 2483 hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { 2484 return false; 2485 } 2486 } 2487 2488 mLauncher.showOutOfSpaceMessage(isHotseat); 2489 return false; 2490 } 2491 } 2492 2493 long screenId = getIdForScreen(dropTargetLayout); 2494 if (screenId == EXTRA_EMPTY_SCREEN_ID) { 2495 commitExtraEmptyScreen(); 2496 } 2497 2498 return true; 2499 } 2500 2501 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, float 2502 distance, boolean considerTimeout) { 2503 if (distance > mMaxDistanceForFolderCreation) return false; 2504 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2505 2506 if (dropOverView != null) { 2507 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2508 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2509 return false; 2510 } 2511 } 2512 2513 boolean hasntMoved = false; 2514 if (mDragInfo != null) { 2515 hasntMoved = dropOverView == mDragInfo.cell; 2516 } 2517 2518 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2519 return false; 2520 } 2521 2522 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2523 boolean willBecomeShortcut = 2524 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2525 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2526 2527 return (aboveShortcut && willBecomeShortcut); 2528 } 2529 2530 boolean willAddToExistingUserFolder(ItemInfo dragInfo, CellLayout target, int[] targetCell, 2531 float distance) { 2532 if (distance > mMaxDistanceForFolderCreation) return false; 2533 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2534 2535 if (dropOverView != null) { 2536 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2537 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2538 return false; 2539 } 2540 } 2541 2542 if (dropOverView instanceof FolderIcon) { 2543 FolderIcon fi = (FolderIcon) dropOverView; 2544 if (fi.acceptDrop(dragInfo)) { 2545 return true; 2546 } 2547 } 2548 return false; 2549 } 2550 2551 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2552 int[] targetCell, float distance, boolean external, DragView dragView, 2553 Runnable postAnimationRunnable) { 2554 if (distance > mMaxDistanceForFolderCreation) return false; 2555 View v = target.getChildAt(targetCell[0], targetCell[1]); 2556 2557 boolean hasntMoved = false; 2558 if (mDragInfo != null) { 2559 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2560 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2561 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2562 } 2563 2564 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2565 mCreateUserFolderOnDrop = false; 2566 final long screenId = (targetCell == null) ? mDragInfo.screenId : getIdForScreen(target); 2567 2568 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2569 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2570 2571 if (aboveShortcut && willBecomeShortcut) { 2572 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2573 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2574 // if the drag started here, we need to remove it from the workspace 2575 if (!external) { 2576 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2577 } 2578 2579 Rect folderLocation = new Rect(); 2580 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2581 target.removeView(v); 2582 2583 FolderIcon fi = 2584 mLauncher.addFolder(target, container, screenId, targetCell[0], targetCell[1]); 2585 destInfo.cellX = -1; 2586 destInfo.cellY = -1; 2587 sourceInfo.cellX = -1; 2588 sourceInfo.cellY = -1; 2589 2590 // If the dragView is null, we can't animate 2591 boolean animate = dragView != null; 2592 if (animate) { 2593 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2594 postAnimationRunnable); 2595 } else { 2596 fi.addItem(destInfo); 2597 fi.addItem(sourceInfo); 2598 } 2599 return true; 2600 } 2601 return false; 2602 } 2603 2604 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2605 float distance, DragObject d, boolean external) { 2606 if (distance > mMaxDistanceForFolderCreation) return false; 2607 2608 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2609 if (!mAddToExistingFolderOnDrop) return false; 2610 mAddToExistingFolderOnDrop = false; 2611 2612 if (dropOverView instanceof FolderIcon) { 2613 FolderIcon fi = (FolderIcon) dropOverView; 2614 if (fi.acceptDrop(d.dragInfo)) { 2615 fi.onDrop(d); 2616 2617 // if the drag started here, we need to remove it from the workspace 2618 if (!external) { 2619 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2620 } 2621 return true; 2622 } 2623 } 2624 return false; 2625 } 2626 2627 @Override 2628 public void prepareAccessibilityDrop() { } 2629 2630 public void onDrop(final DragObject d) { 2631 mDragViewVisualCenter = d.getVisualCenter(mDragViewVisualCenter); 2632 CellLayout dropTargetLayout = mDropToLayout; 2633 2634 // We want the point to be mapped to the dragTarget. 2635 if (dropTargetLayout != null) { 2636 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 2637 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2638 } else { 2639 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter); 2640 } 2641 } 2642 2643 int snapScreen = -1; 2644 boolean resizeOnDrop = false; 2645 if (d.dragSource != this) { 2646 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2647 (int) mDragViewVisualCenter[1] }; 2648 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2649 } else if (mDragInfo != null) { 2650 final View cell = mDragInfo.cell; 2651 2652 Runnable resizeRunnable = null; 2653 if (dropTargetLayout != null && !d.cancelled) { 2654 // Move internally 2655 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2656 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2657 long container = hasMovedIntoHotseat ? 2658 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2659 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2660 long screenId = (mTargetCell[0] < 0) ? 2661 mDragInfo.screenId : getIdForScreen(dropTargetLayout); 2662 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2663 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2664 // First we find the cell nearest to point at which the item is 2665 // dropped, without any consideration to whether there is an item there. 2666 2667 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2668 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2669 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2670 mDragViewVisualCenter[1], mTargetCell); 2671 2672 // If the item being dropped is a shortcut and the nearest drop 2673 // cell also contains a shortcut, then create a folder with the two shortcuts. 2674 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2675 dropTargetLayout, mTargetCell, distance, false, d.dragView, null)) { 2676 return; 2677 } 2678 2679 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, 2680 distance, d, false)) { 2681 return; 2682 } 2683 2684 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2685 // we need to find the nearest cell location that is vacant 2686 ItemInfo item = d.dragInfo; 2687 int minSpanX = item.spanX; 2688 int minSpanY = item.spanY; 2689 if (item.minSpanX > 0 && item.minSpanY > 0) { 2690 minSpanX = item.minSpanX; 2691 minSpanY = item.minSpanY; 2692 } 2693 2694 int[] resultSpan = new int[2]; 2695 mTargetCell = dropTargetLayout.performReorder((int) mDragViewVisualCenter[0], 2696 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, cell, 2697 mTargetCell, resultSpan, CellLayout.MODE_ON_DROP); 2698 2699 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2700 2701 // if the widget resizes on drop 2702 if (foundCell && (cell instanceof AppWidgetHostView) && 2703 (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY)) { 2704 resizeOnDrop = true; 2705 item.spanX = resultSpan[0]; 2706 item.spanY = resultSpan[1]; 2707 AppWidgetHostView awhv = (AppWidgetHostView) cell; 2708 AppWidgetResizeFrame.updateWidgetSizeRanges(awhv, mLauncher, resultSpan[0], 2709 resultSpan[1]); 2710 } 2711 2712 if (getScreenIdForPageIndex(mCurrentPage) != screenId && !hasMovedIntoHotseat) { 2713 snapScreen = getPageIndexForScreenId(screenId); 2714 snapToPage(snapScreen); 2715 } 2716 2717 if (foundCell) { 2718 final ItemInfo info = (ItemInfo) cell.getTag(); 2719 if (hasMovedLayouts) { 2720 // Reparent the view 2721 CellLayout parentCell = getParentCellLayoutForView(cell); 2722 if (parentCell != null) { 2723 parentCell.removeView(cell); 2724 } else if (ProviderConfig.IS_DOGFOOD_BUILD) { 2725 throw new NullPointerException("mDragInfo.cell has null parent"); 2726 } 2727 addInScreen(cell, container, screenId, mTargetCell[0], mTargetCell[1], 2728 info.spanX, info.spanY); 2729 } 2730 2731 // update the item's position after drop 2732 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2733 lp.cellX = lp.tmpCellX = mTargetCell[0]; 2734 lp.cellY = lp.tmpCellY = mTargetCell[1]; 2735 lp.cellHSpan = item.spanX; 2736 lp.cellVSpan = item.spanY; 2737 lp.isLockedToGrid = true; 2738 2739 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2740 cell instanceof LauncherAppWidgetHostView) { 2741 final CellLayout cellLayout = dropTargetLayout; 2742 // We post this call so that the widget has a chance to be placed 2743 // in its final location 2744 2745 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2746 AppWidgetProviderInfo pInfo = hostView.getAppWidgetInfo(); 2747 if (pInfo != null && pInfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE 2748 && !d.accessibleDrag) { 2749 final Runnable addResizeFrame = new Runnable() { 2750 public void run() { 2751 DragLayer dragLayer = mLauncher.getDragLayer(); 2752 dragLayer.addResizeFrame(info, hostView, cellLayout); 2753 } 2754 }; 2755 resizeRunnable = (new Runnable() { 2756 public void run() { 2757 if (!isPageMoving()) { 2758 addResizeFrame.run(); 2759 } else { 2760 mDelayedResizeRunnable = addResizeFrame; 2761 } 2762 } 2763 }); 2764 } 2765 } 2766 2767 LauncherModel.modifyItemInDatabase(mLauncher, info, container, screenId, lp.cellX, 2768 lp.cellY, item.spanX, item.spanY); 2769 } else { 2770 // If we can't find a drop location, we return the item to its original position 2771 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2772 mTargetCell[0] = lp.cellX; 2773 mTargetCell[1] = lp.cellY; 2774 CellLayout layout = (CellLayout) cell.getParent().getParent(); 2775 layout.markCellsAsOccupiedForView(cell); 2776 } 2777 } 2778 2779 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2780 final Runnable finalResizeRunnable = resizeRunnable; 2781 // Prepare it to be animated into its new position 2782 // This must be called after the view has been re-parented 2783 final Runnable onCompleteRunnable = new Runnable() { 2784 @Override 2785 public void run() { 2786 mAnimatingViewIntoPlace = false; 2787 updateChildrenLayersEnabled(false); 2788 if (finalResizeRunnable != null) { 2789 finalResizeRunnable.run(); 2790 } 2791 } 2792 }; 2793 mAnimatingViewIntoPlace = true; 2794 if (d.dragView.hasDrawn()) { 2795 final ItemInfo info = (ItemInfo) cell.getTag(); 2796 boolean isWidget = info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET 2797 || info.itemType == LauncherSettings.Favorites.ITEM_TYPE_CUSTOM_APPWIDGET; 2798 if (isWidget) { 2799 int animationType = resizeOnDrop ? ANIMATE_INTO_POSITION_AND_RESIZE : 2800 ANIMATE_INTO_POSITION_AND_DISAPPEAR; 2801 animateWidgetDrop(info, parent, d.dragView, 2802 onCompleteRunnable, animationType, cell, false); 2803 } else { 2804 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2805 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2806 onCompleteRunnable, this); 2807 } 2808 } else { 2809 d.deferDragViewCleanupPostAnimation = false; 2810 cell.setVisibility(VISIBLE); 2811 } 2812 parent.onDropChild(cell); 2813 } 2814 } 2815 2816 /** 2817 * Computes the area relative to dragLayer which is used to display a page. 2818 */ 2819 public void getPageAreaRelativeToDragLayer(Rect outArea) { 2820 CellLayout child = (CellLayout) getChildAt(getNextPage()); 2821 if (child == null) { 2822 return; 2823 } 2824 ShortcutAndWidgetContainer boundingLayout = child.getShortcutsAndWidgets(); 2825 2826 // Use the absolute left instead of the child left, as we want the visible area 2827 // irrespective of the visible child. Since the view can only scroll horizontally, the 2828 // top position is not affected. 2829 mTempXY[0] = getViewportOffsetX() + getPaddingLeft() + boundingLayout.getLeft(); 2830 mTempXY[1] = child.getTop() + boundingLayout.getTop(); 2831 2832 float scale = mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(this, mTempXY); 2833 outArea.set(mTempXY[0], mTempXY[1], 2834 (int) (mTempXY[0] + scale * boundingLayout.getMeasuredWidth()), 2835 (int) (mTempXY[1] + scale * boundingLayout.getMeasuredHeight())); 2836 } 2837 2838 public void getViewLocationRelativeToSelf(View v, int[] location) { 2839 getLocationInWindow(location); 2840 int x = location[0]; 2841 int y = location[1]; 2842 2843 v.getLocationInWindow(location); 2844 int vX = location[0]; 2845 int vY = location[1]; 2846 2847 location[0] = vX - x; 2848 location[1] = vY - y; 2849 } 2850 2851 @Override 2852 public void onDragEnter(DragObject d) { 2853 if (ENFORCE_DRAG_EVENT_ORDER) { 2854 enfoceDragParity("onDragEnter", 1, 1); 2855 } 2856 2857 mCreateUserFolderOnDrop = false; 2858 mAddToExistingFolderOnDrop = false; 2859 2860 mDropToLayout = null; 2861 CellLayout layout = getCurrentDropLayout(); 2862 setCurrentDropLayout(layout); 2863 setCurrentDragOverlappingLayout(layout); 2864 2865 if (!workspaceInModalState()) { 2866 mLauncher.getDragLayer().showPageHints(); 2867 } 2868 } 2869 2870 @Override 2871 public void onDragExit(DragObject d) { 2872 if (ENFORCE_DRAG_EVENT_ORDER) { 2873 enfoceDragParity("onDragExit", -1, 0); 2874 } 2875 2876 // Here we store the final page that will be dropped to, if the workspace in fact 2877 // receives the drop 2878 if (mInScrollArea) { 2879 if (isPageMoving()) { 2880 // If the user drops while the page is scrolling, we should use that page as the 2881 // destination instead of the page that is being hovered over. 2882 mDropToLayout = (CellLayout) getPageAt(getNextPage()); 2883 } else { 2884 mDropToLayout = mDragOverlappingLayout; 2885 } 2886 } else { 2887 mDropToLayout = mDragTargetLayout; 2888 } 2889 2890 if (mDragMode == DRAG_MODE_CREATE_FOLDER) { 2891 mCreateUserFolderOnDrop = true; 2892 } else if (mDragMode == DRAG_MODE_ADD_TO_FOLDER) { 2893 mAddToExistingFolderOnDrop = true; 2894 } 2895 2896 // Reset the scroll area and previous drag target 2897 onResetScrollArea(); 2898 setCurrentDropLayout(null); 2899 setCurrentDragOverlappingLayout(null); 2900 2901 mSpringLoadedDragController.cancel(); 2902 2903 mLauncher.getDragLayer().hidePageHints(); 2904 } 2905 2906 private void enfoceDragParity(String event, int update, int expectedValue) { 2907 enfoceDragParity(this, event, update, expectedValue); 2908 for (int i = 0; i < getChildCount(); i++) { 2909 enfoceDragParity(getChildAt(i), event, update, expectedValue); 2910 } 2911 } 2912 2913 private void enfoceDragParity(View v, String event, int update, int expectedValue) { 2914 Object tag = v.getTag(R.id.drag_event_parity); 2915 int value = tag == null ? 0 : (Integer) tag; 2916 value += update; 2917 v.setTag(R.id.drag_event_parity, value); 2918 2919 if (value != expectedValue) { 2920 Log.e(TAG, event + ": Drag contract violated: " + value); 2921 } 2922 } 2923 2924 void setCurrentDropLayout(CellLayout layout) { 2925 if (mDragTargetLayout != null) { 2926 mDragTargetLayout.revertTempState(); 2927 mDragTargetLayout.onDragExit(); 2928 } 2929 mDragTargetLayout = layout; 2930 if (mDragTargetLayout != null) { 2931 mDragTargetLayout.onDragEnter(); 2932 } 2933 cleanupReorder(true); 2934 cleanupFolderCreation(); 2935 setCurrentDropOverCell(-1, -1); 2936 } 2937 2938 void setCurrentDragOverlappingLayout(CellLayout layout) { 2939 if (mDragOverlappingLayout != null) { 2940 mDragOverlappingLayout.setIsDragOverlapping(false); 2941 } 2942 mDragOverlappingLayout = layout; 2943 if (mDragOverlappingLayout != null) { 2944 mDragOverlappingLayout.setIsDragOverlapping(true); 2945 } 2946 invalidate(); 2947 } 2948 2949 void setCurrentDropOverCell(int x, int y) { 2950 if (x != mDragOverX || y != mDragOverY) { 2951 mDragOverX = x; 2952 mDragOverY = y; 2953 setDragMode(DRAG_MODE_NONE); 2954 } 2955 } 2956 2957 void setDragMode(int dragMode) { 2958 if (dragMode != mDragMode) { 2959 if (dragMode == DRAG_MODE_NONE) { 2960 cleanupAddToFolder(); 2961 // We don't want to cancel the re-order alarm every time the target cell changes 2962 // as this feels to slow / unresponsive. 2963 cleanupReorder(false); 2964 cleanupFolderCreation(); 2965 } else if (dragMode == DRAG_MODE_ADD_TO_FOLDER) { 2966 cleanupReorder(true); 2967 cleanupFolderCreation(); 2968 } else if (dragMode == DRAG_MODE_CREATE_FOLDER) { 2969 cleanupAddToFolder(); 2970 cleanupReorder(true); 2971 } else if (dragMode == DRAG_MODE_REORDER) { 2972 cleanupAddToFolder(); 2973 cleanupFolderCreation(); 2974 } 2975 mDragMode = dragMode; 2976 } 2977 } 2978 2979 private void cleanupFolderCreation() { 2980 if (mDragFolderRingAnimator != null) { 2981 mDragFolderRingAnimator.animateToNaturalState(); 2982 mDragFolderRingAnimator = null; 2983 } 2984 mFolderCreationAlarm.setOnAlarmListener(null); 2985 mFolderCreationAlarm.cancelAlarm(); 2986 } 2987 2988 private void cleanupAddToFolder() { 2989 if (mDragOverFolderIcon != null) { 2990 mDragOverFolderIcon.onDragExit(null); 2991 mDragOverFolderIcon = null; 2992 } 2993 } 2994 2995 private void cleanupReorder(boolean cancelAlarm) { 2996 // Any pending reorders are canceled 2997 if (cancelAlarm) { 2998 mReorderAlarm.cancelAlarm(); 2999 } 3000 mLastReorderX = -1; 3001 mLastReorderY = -1; 3002 } 3003 3004 /* 3005 * 3006 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 3007 * coordinate space. The argument xy is modified with the return result. 3008 */ 3009 void mapPointFromSelfToChild(View v, float[] xy) { 3010 xy[0] = xy[0] - v.getLeft(); 3011 xy[1] = xy[1] - v.getTop(); 3012 } 3013 3014 boolean isPointInSelfOverHotseat(int x, int y) { 3015 mTempXY[0] = x; 3016 mTempXY[1] = y; 3017 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(this, mTempXY, true); 3018 return mLauncher.getDeviceProfile().isInHotseatRect(mTempXY[0], mTempXY[1]); 3019 } 3020 3021 void mapPointFromSelfToHotseatLayout(Hotseat hotseat, float[] xy) { 3022 mTempXY[0] = (int) xy[0]; 3023 mTempXY[1] = (int) xy[1]; 3024 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(this, mTempXY, true); 3025 mLauncher.getDragLayer().mapCoordInSelfToDescendent(hotseat.getLayout(), mTempXY); 3026 3027 xy[0] = mTempXY[0]; 3028 xy[1] = mTempXY[1]; 3029 } 3030 3031 /* 3032 * 3033 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 3034 * the parent View's coordinate space. The argument xy is modified with the return result. 3035 * 3036 */ 3037 void mapPointFromChildToSelf(View v, float[] xy) { 3038 xy[0] += v.getLeft(); 3039 xy[1] += v.getTop(); 3040 } 3041 3042 static private float squaredDistance(float[] point1, float[] point2) { 3043 float distanceX = point1[0] - point2[0]; 3044 float distanceY = point2[1] - point2[1]; 3045 return distanceX * distanceX + distanceY * distanceY; 3046 } 3047 3048 /* 3049 * 3050 * This method returns the CellLayout that is currently being dragged to. In order to drag 3051 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 3052 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 3053 * 3054 * Return null if no CellLayout is currently being dragged over 3055 * 3056 */ 3057 private CellLayout findMatchingPageForDragOver( 3058 DragView dragView, float originX, float originY, boolean exact) { 3059 // We loop through all the screens (ie CellLayouts) and see which ones overlap 3060 // with the item being dragged and then choose the one that's closest to the touch point 3061 final int screenCount = getChildCount(); 3062 CellLayout bestMatchingScreen = null; 3063 float smallestDistSoFar = Float.MAX_VALUE; 3064 3065 for (int i = 0; i < screenCount; i++) { 3066 // The custom content screen is not a valid drag over option 3067 if (mScreenOrder.get(i) == CUSTOM_CONTENT_SCREEN_ID) { 3068 continue; 3069 } 3070 3071 CellLayout cl = (CellLayout) getChildAt(i); 3072 3073 final float[] touchXy = {originX, originY}; 3074 mapPointFromSelfToChild(cl, touchXy); 3075 3076 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 3077 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 3078 return cl; 3079 } 3080 3081 if (!exact) { 3082 // Get the center of the cell layout in screen coordinates 3083 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 3084 cellLayoutCenter[0] = cl.getWidth()/2; 3085 cellLayoutCenter[1] = cl.getHeight()/2; 3086 mapPointFromChildToSelf(cl, cellLayoutCenter); 3087 3088 touchXy[0] = originX; 3089 touchXy[1] = originY; 3090 3091 // Calculate the distance between the center of the CellLayout 3092 // and the touch point 3093 float dist = squaredDistance(touchXy, cellLayoutCenter); 3094 3095 if (dist < smallestDistSoFar) { 3096 smallestDistSoFar = dist; 3097 bestMatchingScreen = cl; 3098 } 3099 } 3100 } 3101 return bestMatchingScreen; 3102 } 3103 3104 private boolean isDragWidget(DragObject d) { 3105 return (d.dragInfo instanceof LauncherAppWidgetInfo || 3106 d.dragInfo instanceof PendingAddWidgetInfo); 3107 } 3108 private boolean isExternalDragWidget(DragObject d) { 3109 return d.dragSource != this && isDragWidget(d); 3110 } 3111 3112 public void onDragOver(DragObject d) { 3113 // Skip drag over events while we are dragging over side pages 3114 if (mInScrollArea || !transitionStateShouldAllowDrop()) return; 3115 3116 CellLayout layout = null; 3117 ItemInfo item = d.dragInfo; 3118 if (item == null) { 3119 if (ProviderConfig.IS_DOGFOOD_BUILD) { 3120 throw new NullPointerException("DragObject has null info"); 3121 } 3122 return; 3123 } 3124 3125 // Ensure that we have proper spans for the item that we are dropping 3126 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 3127 mDragViewVisualCenter = d.getVisualCenter(mDragViewVisualCenter); 3128 3129 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 3130 // Identify whether we have dragged over a side page 3131 if (workspaceInModalState()) { 3132 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 3133 if (isPointInSelfOverHotseat(d.x, d.y)) { 3134 layout = mLauncher.getHotseat().getLayout(); 3135 } 3136 } 3137 if (layout == null) { 3138 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false); 3139 } 3140 if (layout != mDragTargetLayout) { 3141 setCurrentDropLayout(layout); 3142 setCurrentDragOverlappingLayout(layout); 3143 3144 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 3145 if (isInSpringLoadedMode) { 3146 if (mLauncher.isHotseatLayout(layout)) { 3147 mSpringLoadedDragController.cancel(); 3148 } else { 3149 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 3150 } 3151 } 3152 } 3153 } else { 3154 // Test to see if we are over the hotseat otherwise just use the current page 3155 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 3156 if (isPointInSelfOverHotseat(d.x, d.y)) { 3157 layout = mLauncher.getHotseat().getLayout(); 3158 } 3159 } 3160 if (layout == null) { 3161 layout = getCurrentDropLayout(); 3162 } 3163 if (layout != mDragTargetLayout) { 3164 setCurrentDropLayout(layout); 3165 setCurrentDragOverlappingLayout(layout); 3166 } 3167 } 3168 3169 // Handle the drag over 3170 if (mDragTargetLayout != null) { 3171 // We want the point to be mapped to the dragTarget. 3172 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 3173 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 3174 } else { 3175 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter); 3176 } 3177 3178 ItemInfo info = d.dragInfo; 3179 3180 int minSpanX = item.spanX; 3181 int minSpanY = item.spanY; 3182 if (item.minSpanX > 0 && item.minSpanY > 0) { 3183 minSpanX = item.minSpanX; 3184 minSpanY = item.minSpanY; 3185 } 3186 3187 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 3188 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, 3189 mDragTargetLayout, mTargetCell); 3190 int reorderX = mTargetCell[0]; 3191 int reorderY = mTargetCell[1]; 3192 3193 setCurrentDropOverCell(mTargetCell[0], mTargetCell[1]); 3194 3195 float targetCellDistance = mDragTargetLayout.getDistanceFromCell( 3196 mDragViewVisualCenter[0], mDragViewVisualCenter[1], mTargetCell); 3197 3198 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 3199 mTargetCell[1]); 3200 3201 manageFolderFeedback(info, mDragTargetLayout, mTargetCell, 3202 targetCellDistance, dragOverView, d.accessibleDrag); 3203 3204 boolean nearestDropOccupied = mDragTargetLayout.isNearestDropLocationOccupied((int) 3205 mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], item.spanX, 3206 item.spanY, child, mTargetCell); 3207 3208 if (!nearestDropOccupied) { 3209 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 3210 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 3211 mTargetCell[0], mTargetCell[1], item.spanX, item.spanY, false, 3212 d.dragView.getDragVisualizeOffset(), d.dragView.getDragRegion()); 3213 } else if ((mDragMode == DRAG_MODE_NONE || mDragMode == DRAG_MODE_REORDER) 3214 && !mReorderAlarm.alarmPending() && (mLastReorderX != reorderX || 3215 mLastReorderY != reorderY)) { 3216 3217 int[] resultSpan = new int[2]; 3218 mDragTargetLayout.performReorder((int) mDragViewVisualCenter[0], 3219 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, item.spanX, item.spanY, 3220 child, mTargetCell, resultSpan, CellLayout.MODE_SHOW_REORDER_HINT); 3221 3222 // Otherwise, if we aren't adding to or creating a folder and there's no pending 3223 // reorder, then we schedule a reorder 3224 ReorderAlarmListener listener = new ReorderAlarmListener(mDragViewVisualCenter, 3225 minSpanX, minSpanY, item.spanX, item.spanY, d.dragView, child); 3226 mReorderAlarm.setOnAlarmListener(listener); 3227 mReorderAlarm.setAlarm(REORDER_TIMEOUT); 3228 } 3229 3230 if (mDragMode == DRAG_MODE_CREATE_FOLDER || mDragMode == DRAG_MODE_ADD_TO_FOLDER || 3231 !nearestDropOccupied) { 3232 if (mDragTargetLayout != null) { 3233 mDragTargetLayout.revertTempState(); 3234 } 3235 } 3236 } 3237 } 3238 3239 private void manageFolderFeedback(ItemInfo info, CellLayout targetLayout, 3240 int[] targetCell, float distance, View dragOverView, boolean accessibleDrag) { 3241 boolean userFolderPending = willCreateUserFolder(info, targetLayout, targetCell, distance, 3242 false); 3243 if (mDragMode == DRAG_MODE_NONE && userFolderPending && 3244 !mFolderCreationAlarm.alarmPending()) { 3245 3246 FolderCreationAlarmListener listener = new 3247 FolderCreationAlarmListener(targetLayout, targetCell[0], targetCell[1]); 3248 3249 if (!accessibleDrag) { 3250 mFolderCreationAlarm.setOnAlarmListener(listener); 3251 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 3252 } else { 3253 listener.onAlarm(mFolderCreationAlarm); 3254 } 3255 return; 3256 } 3257 3258 boolean willAddToFolder = 3259 willAddToExistingUserFolder(info, targetLayout, targetCell, distance); 3260 3261 if (willAddToFolder && mDragMode == DRAG_MODE_NONE) { 3262 mDragOverFolderIcon = ((FolderIcon) dragOverView); 3263 mDragOverFolderIcon.onDragEnter(info); 3264 if (targetLayout != null) { 3265 targetLayout.clearDragOutlines(); 3266 } 3267 setDragMode(DRAG_MODE_ADD_TO_FOLDER); 3268 return; 3269 } 3270 3271 if (mDragMode == DRAG_MODE_ADD_TO_FOLDER && !willAddToFolder) { 3272 setDragMode(DRAG_MODE_NONE); 3273 } 3274 if (mDragMode == DRAG_MODE_CREATE_FOLDER && !userFolderPending) { 3275 setDragMode(DRAG_MODE_NONE); 3276 } 3277 3278 return; 3279 } 3280 3281 class FolderCreationAlarmListener implements OnAlarmListener { 3282 CellLayout layout; 3283 int cellX; 3284 int cellY; 3285 3286 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 3287 this.layout = layout; 3288 this.cellX = cellX; 3289 this.cellY = cellY; 3290 } 3291 3292 public void onAlarm(Alarm alarm) { 3293 if (mDragFolderRingAnimator != null) { 3294 // This shouldn't happen ever, but just in case, make sure we clean up the mess. 3295 mDragFolderRingAnimator.animateToNaturalState(); 3296 } 3297 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 3298 mDragFolderRingAnimator.setCell(cellX, cellY); 3299 mDragFolderRingAnimator.setCellLayout(layout); 3300 mDragFolderRingAnimator.animateToAcceptState(); 3301 layout.showFolderAccept(mDragFolderRingAnimator); 3302 layout.clearDragOutlines(); 3303 setDragMode(DRAG_MODE_CREATE_FOLDER); 3304 } 3305 } 3306 3307 class ReorderAlarmListener implements OnAlarmListener { 3308 float[] dragViewCenter; 3309 int minSpanX, minSpanY, spanX, spanY; 3310 DragView dragView; 3311 View child; 3312 3313 public ReorderAlarmListener(float[] dragViewCenter, int minSpanX, int minSpanY, int spanX, 3314 int spanY, DragView dragView, View child) { 3315 this.dragViewCenter = dragViewCenter; 3316 this.minSpanX = minSpanX; 3317 this.minSpanY = minSpanY; 3318 this.spanX = spanX; 3319 this.spanY = spanY; 3320 this.child = child; 3321 this.dragView = dragView; 3322 } 3323 3324 public void onAlarm(Alarm alarm) { 3325 int[] resultSpan = new int[2]; 3326 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 3327 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, mDragTargetLayout, 3328 mTargetCell); 3329 mLastReorderX = mTargetCell[0]; 3330 mLastReorderY = mTargetCell[1]; 3331 3332 mTargetCell = mDragTargetLayout.performReorder((int) mDragViewVisualCenter[0], 3333 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 3334 child, mTargetCell, resultSpan, CellLayout.MODE_DRAG_OVER); 3335 3336 if (mTargetCell[0] < 0 || mTargetCell[1] < 0) { 3337 mDragTargetLayout.revertTempState(); 3338 } else { 3339 setDragMode(DRAG_MODE_REORDER); 3340 } 3341 3342 boolean resize = resultSpan[0] != spanX || resultSpan[1] != spanY; 3343 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 3344 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 3345 mTargetCell[0], mTargetCell[1], resultSpan[0], resultSpan[1], resize, 3346 dragView.getDragVisualizeOffset(), dragView.getDragRegion()); 3347 } 3348 } 3349 3350 @Override 3351 public void getHitRectRelativeToDragLayer(Rect outRect) { 3352 // We want the workspace to have the whole area of the display (it will find the correct 3353 // cell layout to drop to in the existing drag/drop logic. 3354 mLauncher.getDragLayer().getDescendantRectRelativeToSelf(this, outRect); 3355 } 3356 3357 /** 3358 * Drop an item that didn't originate on one of the workspace screens. 3359 * It may have come from Launcher (e.g. from all apps or customize), or it may have 3360 * come from another app altogether. 3361 * 3362 * NOTE: This can also be called when we are outside of a drag event, when we want 3363 * to add an item to one of the workspace screens. 3364 */ 3365 private void onDropExternal(final int[] touchXY, final ItemInfo dragInfo, 3366 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 3367 final Runnable exitSpringLoadedRunnable = new Runnable() { 3368 @Override 3369 public void run() { 3370 mLauncher.exitSpringLoadedDragModeDelayed(true, 3371 Launcher.EXIT_SPRINGLOADED_MODE_SHORT_TIMEOUT, null); 3372 } 3373 }; 3374 3375 ItemInfo info = dragInfo; 3376 int spanX = info.spanX; 3377 int spanY = info.spanY; 3378 if (mDragInfo != null) { 3379 spanX = mDragInfo.spanX; 3380 spanY = mDragInfo.spanY; 3381 } 3382 3383 final long container = mLauncher.isHotseatLayout(cellLayout) ? 3384 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 3385 LauncherSettings.Favorites.CONTAINER_DESKTOP; 3386 final long screenId = getIdForScreen(cellLayout); 3387 if (!mLauncher.isHotseatLayout(cellLayout) 3388 && screenId != getScreenIdForPageIndex(mCurrentPage) 3389 && mState != State.SPRING_LOADED) { 3390 snapToScreenId(screenId, null); 3391 } 3392 3393 if (info instanceof PendingAddItemInfo) { 3394 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 3395 3396 boolean findNearestVacantCell = true; 3397 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 3398 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3399 cellLayout, mTargetCell); 3400 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3401 mDragViewVisualCenter[1], mTargetCell); 3402 if (willCreateUserFolder(d.dragInfo, cellLayout, mTargetCell, distance, true) 3403 || willAddToExistingUserFolder( 3404 d.dragInfo, cellLayout, mTargetCell, distance)) { 3405 findNearestVacantCell = false; 3406 } 3407 } 3408 3409 final ItemInfo item = d.dragInfo; 3410 boolean updateWidgetSize = false; 3411 if (findNearestVacantCell) { 3412 int minSpanX = item.spanX; 3413 int minSpanY = item.spanY; 3414 if (item.minSpanX > 0 && item.minSpanY > 0) { 3415 minSpanX = item.minSpanX; 3416 minSpanY = item.minSpanY; 3417 } 3418 int[] resultSpan = new int[2]; 3419 mTargetCell = cellLayout.performReorder((int) mDragViewVisualCenter[0], 3420 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, info.spanX, info.spanY, 3421 null, mTargetCell, resultSpan, CellLayout.MODE_ON_DROP_EXTERNAL); 3422 3423 if (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY) { 3424 updateWidgetSize = true; 3425 } 3426 item.spanX = resultSpan[0]; 3427 item.spanY = resultSpan[1]; 3428 } 3429 3430 Runnable onAnimationCompleteRunnable = new Runnable() { 3431 @Override 3432 public void run() { 3433 // Normally removeExtraEmptyScreen is called in Workspace#onDragEnd, but when 3434 // adding an item that may not be dropped right away (due to a config activity) 3435 // we defer the removal until the activity returns. 3436 deferRemoveExtraEmptyScreen(); 3437 3438 // When dragging and dropping from customization tray, we deal with creating 3439 // widgets/shortcuts/folders in a slightly different way 3440 mLauncher.addPendingItem(pendingInfo, container, screenId, mTargetCell, 3441 item.spanX, item.spanY); 3442 } 3443 }; 3444 boolean isWidget = pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET 3445 || pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_CUSTOM_APPWIDGET; 3446 3447 View finalView = isWidget ? ((PendingAddWidgetInfo) pendingInfo).boundWidget : null; 3448 3449 if (finalView instanceof AppWidgetHostView && updateWidgetSize) { 3450 AppWidgetHostView awhv = (AppWidgetHostView) finalView; 3451 AppWidgetResizeFrame.updateWidgetSizeRanges(awhv, mLauncher, item.spanX, 3452 item.spanY); 3453 } 3454 3455 int animationStyle = ANIMATE_INTO_POSITION_AND_DISAPPEAR; 3456 if (isWidget && ((PendingAddWidgetInfo) pendingInfo).info != null && 3457 ((PendingAddWidgetInfo) pendingInfo).info.configure != null) { 3458 animationStyle = ANIMATE_INTO_POSITION_AND_REMAIN; 3459 } 3460 animateWidgetDrop(info, cellLayout, d.dragView, onAnimationCompleteRunnable, 3461 animationStyle, finalView, true); 3462 } else { 3463 // This is for other drag/drop cases, like dragging from All Apps 3464 View view = null; 3465 3466 switch (info.itemType) { 3467 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 3468 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3469 if (info.container == NO_ID && info instanceof AppInfo) { 3470 // Came from all apps -- make a copy 3471 info = ((AppInfo) info).makeShortcut(); 3472 } 3473 view = mLauncher.createShortcut(cellLayout, (ShortcutInfo) info); 3474 break; 3475 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 3476 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 3477 (FolderInfo) info, mIconCache); 3478 break; 3479 default: 3480 throw new IllegalStateException("Unknown item type: " + info.itemType); 3481 } 3482 3483 // First we find the cell nearest to point at which the item is 3484 // dropped, without any consideration to whether there is an item there. 3485 if (touchXY != null) { 3486 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3487 cellLayout, mTargetCell); 3488 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3489 mDragViewVisualCenter[1], mTargetCell); 3490 d.postAnimationRunnable = exitSpringLoadedRunnable; 3491 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, distance, 3492 true, d.dragView, d.postAnimationRunnable)) { 3493 return; 3494 } 3495 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, distance, d, 3496 true)) { 3497 return; 3498 } 3499 } 3500 3501 if (touchXY != null) { 3502 // when dragging and dropping, just find the closest free spot 3503 mTargetCell = cellLayout.performReorder((int) mDragViewVisualCenter[0], 3504 (int) mDragViewVisualCenter[1], 1, 1, 1, 1, 3505 null, mTargetCell, null, CellLayout.MODE_ON_DROP_EXTERNAL); 3506 } else { 3507 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3508 } 3509 // Add the item to DB before adding to screen ensures that the container and other 3510 // values of the info is properly updated. 3511 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screenId, 3512 mTargetCell[0], mTargetCell[1]); 3513 3514 addInScreen(view, container, screenId, mTargetCell[0], mTargetCell[1], info.spanX, 3515 info.spanY, insertAtFirst); 3516 cellLayout.onDropChild(view); 3517 cellLayout.getShortcutsAndWidgets().measureChild(view); 3518 3519 if (d.dragView != null) { 3520 // We wrap the animation call in the temporary set and reset of the current 3521 // cellLayout to its final transform -- this means we animate the drag view to 3522 // the correct final location. 3523 setFinalTransitionTransform(cellLayout); 3524 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 3525 exitSpringLoadedRunnable, this); 3526 resetTransitionTransform(cellLayout); 3527 } 3528 } 3529 } 3530 3531 public Bitmap createWidgetBitmap(ItemInfo widgetInfo, View layout) { 3532 int[] unScaledSize = mLauncher.getWorkspace().estimateItemSize(widgetInfo, false); 3533 int visibility = layout.getVisibility(); 3534 layout.setVisibility(VISIBLE); 3535 3536 int width = MeasureSpec.makeMeasureSpec(unScaledSize[0], MeasureSpec.EXACTLY); 3537 int height = MeasureSpec.makeMeasureSpec(unScaledSize[1], MeasureSpec.EXACTLY); 3538 Bitmap b = Bitmap.createBitmap(unScaledSize[0], unScaledSize[1], 3539 Bitmap.Config.ARGB_8888); 3540 mCanvas.setBitmap(b); 3541 3542 layout.measure(width, height); 3543 layout.layout(0, 0, unScaledSize[0], unScaledSize[1]); 3544 layout.draw(mCanvas); 3545 mCanvas.setBitmap(null); 3546 layout.setVisibility(visibility); 3547 return b; 3548 } 3549 3550 private void getFinalPositionForDropAnimation(int[] loc, float[] scaleXY, 3551 DragView dragView, CellLayout layout, ItemInfo info, int[] targetCell, 3552 boolean external, boolean scale) { 3553 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 3554 // location and size on the home screen. 3555 int spanX = info.spanX; 3556 int spanY = info.spanY; 3557 3558 Rect r = estimateItemPosition(layout, info, targetCell[0], targetCell[1], spanX, spanY); 3559 loc[0] = r.left; 3560 loc[1] = r.top; 3561 3562 setFinalTransitionTransform(layout); 3563 float cellLayoutScale = 3564 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(layout, loc, true); 3565 resetTransitionTransform(layout); 3566 3567 float dragViewScaleX; 3568 float dragViewScaleY; 3569 if (scale) { 3570 dragViewScaleX = (1.0f * r.width()) / dragView.getMeasuredWidth(); 3571 dragViewScaleY = (1.0f * r.height()) / dragView.getMeasuredHeight(); 3572 } else { 3573 dragViewScaleX = 1f; 3574 dragViewScaleY = 1f; 3575 } 3576 3577 // The animation will scale the dragView about its center, so we need to center about 3578 // the final location. 3579 loc[0] -= (dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 3580 loc[1] -= (dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 3581 3582 scaleXY[0] = dragViewScaleX * cellLayoutScale; 3583 scaleXY[1] = dragViewScaleY * cellLayoutScale; 3584 } 3585 3586 public void animateWidgetDrop(ItemInfo info, CellLayout cellLayout, DragView dragView, 3587 final Runnable onCompleteRunnable, int animationType, final View finalView, 3588 boolean external) { 3589 Rect from = new Rect(); 3590 mLauncher.getDragLayer().getViewRectRelativeToSelf(dragView, from); 3591 3592 int[] finalPos = new int[2]; 3593 float scaleXY[] = new float[2]; 3594 boolean scalePreview = !(info instanceof PendingAddShortcutInfo); 3595 getFinalPositionForDropAnimation(finalPos, scaleXY, dragView, cellLayout, info, mTargetCell, 3596 external, scalePreview); 3597 3598 Resources res = mLauncher.getResources(); 3599 final int duration = res.getInteger(R.integer.config_dropAnimMaxDuration) - 200; 3600 3601 // In the case where we've prebound the widget, we remove it from the DragLayer 3602 if (finalView instanceof AppWidgetHostView && external) { 3603 mLauncher.getDragLayer().removeView(finalView); 3604 } 3605 3606 boolean isWidget = info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET || 3607 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_CUSTOM_APPWIDGET; 3608 if ((animationType == ANIMATE_INTO_POSITION_AND_RESIZE || external) && finalView != null) { 3609 Bitmap crossFadeBitmap = createWidgetBitmap(info, finalView); 3610 dragView.setCrossFadeBitmap(crossFadeBitmap); 3611 dragView.crossFade((int) (duration * 0.8f)); 3612 } else if (isWidget && external) { 3613 scaleXY[0] = scaleXY[1] = Math.min(scaleXY[0], scaleXY[1]); 3614 } 3615 3616 DragLayer dragLayer = mLauncher.getDragLayer(); 3617 if (animationType == CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION) { 3618 mLauncher.getDragLayer().animateViewIntoPosition(dragView, finalPos, 0f, 0.1f, 0.1f, 3619 DragLayer.ANIMATION_END_DISAPPEAR, onCompleteRunnable, duration); 3620 } else { 3621 int endStyle; 3622 if (animationType == ANIMATE_INTO_POSITION_AND_REMAIN) { 3623 endStyle = DragLayer.ANIMATION_END_REMAIN_VISIBLE; 3624 } else { 3625 endStyle = DragLayer.ANIMATION_END_DISAPPEAR;; 3626 } 3627 3628 Runnable onComplete = new Runnable() { 3629 @Override 3630 public void run() { 3631 if (finalView != null) { 3632 finalView.setVisibility(VISIBLE); 3633 } 3634 if (onCompleteRunnable != null) { 3635 onCompleteRunnable.run(); 3636 } 3637 } 3638 }; 3639 dragLayer.animateViewIntoPosition(dragView, from.left, from.top, finalPos[0], 3640 finalPos[1], 1, 1, 1, scaleXY[0], scaleXY[1], onComplete, endStyle, 3641 duration, this); 3642 } 3643 } 3644 3645 public void setFinalTransitionTransform(CellLayout layout) { 3646 if (isSwitchingState()) { 3647 mCurrentScale = getScaleX(); 3648 setScaleX(mStateTransitionAnimation.getFinalScale()); 3649 setScaleY(mStateTransitionAnimation.getFinalScale()); 3650 } 3651 } 3652 public void resetTransitionTransform(CellLayout layout) { 3653 if (isSwitchingState()) { 3654 setScaleX(mCurrentScale); 3655 setScaleY(mCurrentScale); 3656 } 3657 } 3658 3659 /** 3660 * Return the current {@link CellLayout}, correctly picking the destination 3661 * screen while a scroll is in progress. 3662 */ 3663 public CellLayout getCurrentDropLayout() { 3664 return (CellLayout) getChildAt(getNextPage()); 3665 } 3666 3667 /** 3668 * Return the current CellInfo describing our current drag; this method exists 3669 * so that Launcher can sync this object with the correct info when the activity is created/ 3670 * destroyed 3671 * 3672 */ 3673 public CellLayout.CellInfo getDragInfo() { 3674 return mDragInfo; 3675 } 3676 3677 public int getCurrentPageOffsetFromCustomContent() { 3678 return getNextPage() - numCustomPages(); 3679 } 3680 3681 /** 3682 * Calculate the nearest cell where the given object would be dropped. 3683 * 3684 * pixelX and pixelY should be in the coordinate system of layout 3685 */ 3686 @Thunk int[] findNearestArea(int pixelX, int pixelY, 3687 int spanX, int spanY, CellLayout layout, int[] recycle) { 3688 return layout.findNearestArea( 3689 pixelX, pixelY, spanX, spanY, recycle); 3690 } 3691 3692 void setup(DragController dragController) { 3693 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3694 mDragController = dragController; 3695 3696 // hardware layers on children are enabled on startup, but should be disabled until 3697 // needed 3698 updateChildrenLayersEnabled(false); 3699 } 3700 3701 /** 3702 * Called at the end of a drag which originated on the workspace. 3703 */ 3704 public void onDropCompleted(final View target, final DragObject d, 3705 final boolean isFlingToDelete, final boolean success) { 3706 if (mDeferDropAfterUninstall) { 3707 mDeferredAction = new Runnable() { 3708 public void run() { 3709 onDropCompleted(target, d, isFlingToDelete, success); 3710 mDeferredAction = null; 3711 } 3712 }; 3713 return; 3714 } 3715 3716 boolean beingCalledAfterUninstall = mDeferredAction != null; 3717 3718 if (success && !(beingCalledAfterUninstall && !mUninstallSuccessful)) { 3719 if (target != this && mDragInfo != null) { 3720 removeWorkspaceItem(mDragInfo.cell); 3721 } 3722 } else if (mDragInfo != null) { 3723 final CellLayout cellLayout = mLauncher.getCellLayout( 3724 mDragInfo.container, mDragInfo.screenId); 3725 if (cellLayout != null) { 3726 cellLayout.onDropChild(mDragInfo.cell); 3727 } else if (ProviderConfig.IS_DOGFOOD_BUILD) { 3728 throw new RuntimeException("Invalid state: cellLayout == null in " 3729 + "Workspace#onDropCompleted. Please file a bug. "); 3730 }; 3731 } 3732 if ((d.cancelled || (beingCalledAfterUninstall && !mUninstallSuccessful)) 3733 && mDragInfo.cell != null) { 3734 mDragInfo.cell.setVisibility(VISIBLE); 3735 } 3736 mDragOutline = null; 3737 mDragInfo = null; 3738 } 3739 3740 /** 3741 * For opposite operation. See {@link #addInScreen}. 3742 */ 3743 public void removeWorkspaceItem(View v) { 3744 CellLayout parentCell = getParentCellLayoutForView(v); 3745 if (parentCell != null) { 3746 parentCell.removeView(v); 3747 } else if (ProviderConfig.IS_DOGFOOD_BUILD) { 3748 // When an app is uninstalled using the drop target, we wait until resume to remove 3749 // the icon. We also remove all the corresponding items from the workspace at 3750 // {@link Launcher#bindComponentsRemoved}. That call can come before or after 3751 // {@link Launcher#mOnResumeCallbacks} depending on how busy the worker thread is. 3752 Log.e(TAG, "mDragInfo.cell has null parent"); 3753 } 3754 if (v instanceof DropTarget) { 3755 mDragController.removeDropTarget((DropTarget) v); 3756 } 3757 } 3758 3759 @Override 3760 public void deferCompleteDropAfterUninstallActivity() { 3761 mDeferDropAfterUninstall = true; 3762 } 3763 3764 /// maybe move this into a smaller part 3765 @Override 3766 public void onUninstallActivityReturned(boolean success) { 3767 mDeferDropAfterUninstall = false; 3768 mUninstallSuccessful = success; 3769 if (mDeferredAction != null) { 3770 mDeferredAction.run(); 3771 } 3772 } 3773 3774 void saveWorkspaceToDb() { 3775 saveWorkspaceScreenToDb((CellLayout) mLauncher.getHotseat().getLayout()); 3776 int count = getChildCount(); 3777 for (int i = 0; i < count; i++) { 3778 CellLayout cl = (CellLayout) getChildAt(i); 3779 saveWorkspaceScreenToDb(cl); 3780 } 3781 } 3782 3783 void saveWorkspaceScreenToDb(CellLayout cl) { 3784 int count = cl.getShortcutsAndWidgets().getChildCount(); 3785 3786 long screenId = getIdForScreen(cl); 3787 int container = Favorites.CONTAINER_DESKTOP; 3788 3789 Hotseat hotseat = mLauncher.getHotseat(); 3790 if (mLauncher.isHotseatLayout(cl)) { 3791 screenId = -1; 3792 container = Favorites.CONTAINER_HOTSEAT; 3793 } 3794 3795 for (int i = 0; i < count; i++) { 3796 View v = cl.getShortcutsAndWidgets().getChildAt(i); 3797 ItemInfo info = (ItemInfo) v.getTag(); 3798 // Null check required as the AllApps button doesn't have an item info 3799 if (info != null) { 3800 int cellX = info.cellX; 3801 int cellY = info.cellY; 3802 if (container == Favorites.CONTAINER_HOTSEAT) { 3803 cellX = hotseat.getCellXFromOrder((int) info.screenId); 3804 cellY = hotseat.getCellYFromOrder((int) info.screenId); 3805 } 3806 LauncherModel.addItemToDatabase(mLauncher, info, container, screenId, cellX, cellY); 3807 } 3808 if (v instanceof FolderIcon) { 3809 FolderIcon fi = (FolderIcon) v; 3810 fi.getFolder().addItemLocationsInDatabase(); 3811 } 3812 } 3813 } 3814 3815 @Override 3816 public float getIntrinsicIconScaleFactor() { 3817 return 1f; 3818 } 3819 3820 @Override 3821 public boolean supportsFlingToDelete() { 3822 return true; 3823 } 3824 3825 @Override 3826 public boolean supportsAppInfoDropTarget() { 3827 return false; 3828 } 3829 3830 @Override 3831 public boolean supportsDeleteDropTarget() { 3832 return true; 3833 } 3834 3835 @Override 3836 public void onFlingToDelete(DragObject d, PointF vec) { 3837 // Do nothing 3838 } 3839 3840 @Override 3841 public void onFlingToDeleteCompleted() { 3842 // Do nothing 3843 } 3844 3845 public boolean isDropEnabled() { 3846 return true; 3847 } 3848 3849 @Override 3850 protected void dispatchRestoreInstanceState(SparseArray<Parcelable> container) { 3851 // We don't dispatch restoreInstanceState to our children using this code path. 3852 // Some pages will be restored immediately as their items are bound immediately, and 3853 // others we will need to wait until after their items are bound. 3854 mSavedStates = container; 3855 } 3856 3857 public void restoreInstanceStateForChild(int child) { 3858 if (mSavedStates != null) { 3859 mRestoredPages.add(child); 3860 CellLayout cl = (CellLayout) getChildAt(child); 3861 if (cl != null) { 3862 cl.restoreInstanceState(mSavedStates); 3863 } 3864 } 3865 } 3866 3867 public void restoreInstanceStateForRemainingPages() { 3868 int count = getChildCount(); 3869 for (int i = 0; i < count; i++) { 3870 if (!mRestoredPages.contains(i)) { 3871 restoreInstanceStateForChild(i); 3872 } 3873 } 3874 mRestoredPages.clear(); 3875 mSavedStates = null; 3876 } 3877 3878 @Override 3879 public void scrollLeft() { 3880 if (!workspaceInModalState() && !mIsSwitchingState) { 3881 super.scrollLeft(); 3882 } 3883 Folder openFolder = getOpenFolder(); 3884 if (openFolder != null) { 3885 openFolder.completeDragExit(); 3886 } 3887 } 3888 3889 @Override 3890 public void scrollRight() { 3891 if (!workspaceInModalState() && !mIsSwitchingState) { 3892 super.scrollRight(); 3893 } 3894 Folder openFolder = getOpenFolder(); 3895 if (openFolder != null) { 3896 openFolder.completeDragExit(); 3897 } 3898 } 3899 3900 @Override 3901 public boolean onEnterScrollArea(int x, int y, int direction) { 3902 // Ignore the scroll area if we are dragging over the hot seat 3903 boolean isPortrait = !mLauncher.getDeviceProfile().isLandscape; 3904 if (mLauncher.getHotseat() != null && isPortrait) { 3905 Rect r = new Rect(); 3906 mLauncher.getHotseat().getHitRect(r); 3907 if (r.contains(x, y)) { 3908 return false; 3909 } 3910 } 3911 3912 boolean result = false; 3913 if (!workspaceInModalState() && !mIsSwitchingState && getOpenFolder() == null) { 3914 mInScrollArea = true; 3915 3916 final int page = getNextPage() + 3917 (direction == DragController.SCROLL_LEFT ? -1 : 1); 3918 // We always want to exit the current layout to ensure parity of enter / exit 3919 setCurrentDropLayout(null); 3920 3921 if (0 <= page && page < getChildCount()) { 3922 // Ensure that we are not dragging over to the custom content screen 3923 if (getScreenIdForPageIndex(page) == CUSTOM_CONTENT_SCREEN_ID) { 3924 return false; 3925 } 3926 3927 CellLayout layout = (CellLayout) getChildAt(page); 3928 setCurrentDragOverlappingLayout(layout); 3929 3930 // Workspace is responsible for drawing the edge glow on adjacent pages, 3931 // so we need to redraw the workspace when this may have changed. 3932 invalidate(); 3933 result = true; 3934 } 3935 } 3936 return result; 3937 } 3938 3939 @Override 3940 public boolean onExitScrollArea() { 3941 boolean result = false; 3942 if (mInScrollArea) { 3943 invalidate(); 3944 CellLayout layout = getCurrentDropLayout(); 3945 setCurrentDropLayout(layout); 3946 setCurrentDragOverlappingLayout(layout); 3947 3948 result = true; 3949 mInScrollArea = false; 3950 } 3951 return result; 3952 } 3953 3954 private void onResetScrollArea() { 3955 setCurrentDragOverlappingLayout(null); 3956 mInScrollArea = false; 3957 } 3958 3959 /** 3960 * Returns a specific CellLayout 3961 */ 3962 CellLayout getParentCellLayoutForView(View v) { 3963 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3964 for (CellLayout layout : layouts) { 3965 if (layout.getShortcutsAndWidgets().indexOfChild(v) > -1) { 3966 return layout; 3967 } 3968 } 3969 return null; 3970 } 3971 3972 /** 3973 * Returns a list of all the CellLayouts in the workspace. 3974 */ 3975 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3976 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3977 int screenCount = getChildCount(); 3978 for (int screen = 0; screen < screenCount; screen++) { 3979 layouts.add(((CellLayout) getChildAt(screen))); 3980 } 3981 if (mLauncher.getHotseat() != null) { 3982 layouts.add(mLauncher.getHotseat().getLayout()); 3983 } 3984 return layouts; 3985 } 3986 3987 /** 3988 * We should only use this to search for specific children. Do not use this method to modify 3989 * ShortcutsAndWidgetsContainer directly. Includes ShortcutAndWidgetContainers from 3990 * the hotseat and workspace pages 3991 */ 3992 ArrayList<ShortcutAndWidgetContainer> getAllShortcutAndWidgetContainers() { 3993 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3994 new ArrayList<ShortcutAndWidgetContainer>(); 3995 int screenCount = getChildCount(); 3996 for (int screen = 0; screen < screenCount; screen++) { 3997 childrenLayouts.add(((CellLayout) getChildAt(screen)).getShortcutsAndWidgets()); 3998 } 3999 if (mLauncher.getHotseat() != null) { 4000 childrenLayouts.add(mLauncher.getHotseat().getLayout().getShortcutsAndWidgets()); 4001 } 4002 return childrenLayouts; 4003 } 4004 4005 public Folder getFolderForTag(final Object tag) { 4006 return (Folder) getFirstMatch(new ItemOperator() { 4007 4008 @Override 4009 public boolean evaluate(ItemInfo info, View v, View parent) { 4010 return (v instanceof Folder) && (((Folder) v).getInfo() == tag) 4011 && ((Folder) v).getInfo().opened; 4012 } 4013 }); 4014 } 4015 4016 public View getHomescreenIconByItemId(final long id) { 4017 return getFirstMatch(new ItemOperator() { 4018 4019 @Override 4020 public boolean evaluate(ItemInfo info, View v, View parent) { 4021 return info != null && info.id == id; 4022 } 4023 }); 4024 } 4025 4026 public View getViewForTag(final Object tag) { 4027 return getFirstMatch(new ItemOperator() { 4028 4029 @Override 4030 public boolean evaluate(ItemInfo info, View v, View parent) { 4031 return info == tag; 4032 } 4033 }); 4034 } 4035 4036 public LauncherAppWidgetHostView getWidgetForAppWidgetId(final int appWidgetId) { 4037 return (LauncherAppWidgetHostView) getFirstMatch(new ItemOperator() { 4038 4039 @Override 4040 public boolean evaluate(ItemInfo info, View v, View parent) { 4041 return (info instanceof LauncherAppWidgetInfo) && 4042 ((LauncherAppWidgetInfo) info).appWidgetId == appWidgetId; 4043 } 4044 }); 4045 } 4046 4047 private View getFirstMatch(final ItemOperator operator) { 4048 final View[] value = new View[1]; 4049 mapOverItems(MAP_NO_RECURSE, new ItemOperator() { 4050 @Override 4051 public boolean evaluate(ItemInfo info, View v, View parent) { 4052 if (operator.evaluate(info, v, parent)) { 4053 value[0] = v; 4054 return true; 4055 } 4056 return false; 4057 } 4058 }); 4059 return value[0]; 4060 } 4061 4062 void clearDropTargets() { 4063 mapOverItems(MAP_NO_RECURSE, new ItemOperator() { 4064 @Override 4065 public boolean evaluate(ItemInfo info, View v, View parent) { 4066 if (v instanceof DropTarget) { 4067 mDragController.removeDropTarget((DropTarget) v); 4068 } 4069 // not done, process all the shortcuts 4070 return false; 4071 } 4072 }); 4073 } 4074 4075 public void disableShortcutsByPackageName(final ArrayList<String> packages, 4076 final UserHandleCompat user, final int reason) { 4077 final HashSet<String> packageNames = new HashSet<String>(); 4078 packageNames.addAll(packages); 4079 4080 mapOverItems(MAP_RECURSE, new ItemOperator() { 4081 @Override 4082 public boolean evaluate(ItemInfo info, View v, View parent) { 4083 if (info instanceof ShortcutInfo && v instanceof BubbleTextView) { 4084 ShortcutInfo shortcutInfo = (ShortcutInfo) info; 4085 ComponentName cn = shortcutInfo.getTargetComponent(); 4086 if (user.equals(shortcutInfo.user) && cn != null 4087 && packageNames.contains(cn.getPackageName())) { 4088 shortcutInfo.isDisabled |= reason; 4089 BubbleTextView shortcut = (BubbleTextView) v; 4090 shortcut.applyFromShortcutInfo(shortcutInfo, mIconCache); 4091 4092 if (parent != null) { 4093 parent.invalidate(); 4094 } 4095 } 4096 } 4097 // process all the shortcuts 4098 return false; 4099 } 4100 }); 4101 } 4102 4103 // Removes ALL items that match a given package name, this is usually called when a package 4104 // has been removed and we want to remove all components (widgets, shortcuts, apps) that 4105 // belong to that package. 4106 void removeItemsByPackageName(final ArrayList<String> packages, final UserHandleCompat user) { 4107 final HashSet<String> packageNames = new HashSet<String>(); 4108 packageNames.addAll(packages); 4109 4110 // Filter out all the ItemInfos that this is going to affect 4111 final HashSet<ItemInfo> infos = new HashSet<ItemInfo>(); 4112 final HashSet<ComponentName> cns = new HashSet<ComponentName>(); 4113 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 4114 for (CellLayout layoutParent : cellLayouts) { 4115 ViewGroup layout = layoutParent.getShortcutsAndWidgets(); 4116 int childCount = layout.getChildCount(); 4117 for (int i = 0; i < childCount; ++i) { 4118 View view = layout.getChildAt(i); 4119 infos.add((ItemInfo) view.getTag()); 4120 } 4121 } 4122 LauncherModel.ItemInfoFilter filter = new LauncherModel.ItemInfoFilter() { 4123 @Override 4124 public boolean filterItem(ItemInfo parent, ItemInfo info, 4125 ComponentName cn) { 4126 if (packageNames.contains(cn.getPackageName()) 4127 && info.user.equals(user)) { 4128 cns.add(cn); 4129 return true; 4130 } 4131 return false; 4132 } 4133 }; 4134 LauncherModel.filterItemInfos(infos, filter); 4135 4136 // Remove the affected components 4137 removeItemsByComponentName(cns, user); 4138 } 4139 4140 /** 4141 * Removes items that match the item info specified. When applications are removed 4142 * as a part of an update, this is called to ensure that other widgets and application 4143 * shortcuts are not removed. 4144 */ 4145 void removeItemsByComponentName(final HashSet<ComponentName> componentNames, 4146 final UserHandleCompat user) { 4147 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 4148 for (final CellLayout layoutParent: cellLayouts) { 4149 final ViewGroup layout = layoutParent.getShortcutsAndWidgets(); 4150 4151 final HashMap<ItemInfo, View> children = new HashMap<ItemInfo, View>(); 4152 for (int j = 0; j < layout.getChildCount(); j++) { 4153 final View view = layout.getChildAt(j); 4154 children.put((ItemInfo) view.getTag(), view); 4155 } 4156 4157 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 4158 final HashMap<FolderInfo, ArrayList<ShortcutInfo>> folderAppsToRemove = 4159 new HashMap<FolderInfo, ArrayList<ShortcutInfo>>(); 4160 LauncherModel.ItemInfoFilter filter = new LauncherModel.ItemInfoFilter() { 4161 @Override 4162 public boolean filterItem(ItemInfo parent, ItemInfo info, 4163 ComponentName cn) { 4164 if (parent instanceof FolderInfo) { 4165 if (componentNames.contains(cn) && info.user.equals(user)) { 4166 FolderInfo folder = (FolderInfo) parent; 4167 ArrayList<ShortcutInfo> appsToRemove; 4168 if (folderAppsToRemove.containsKey(folder)) { 4169 appsToRemove = folderAppsToRemove.get(folder); 4170 } else { 4171 appsToRemove = new ArrayList<ShortcutInfo>(); 4172 folderAppsToRemove.put(folder, appsToRemove); 4173 } 4174 appsToRemove.add((ShortcutInfo) info); 4175 return true; 4176 } 4177 } else { 4178 if (componentNames.contains(cn) && info.user.equals(user)) { 4179 childrenToRemove.add(children.get(info)); 4180 return true; 4181 } 4182 } 4183 return false; 4184 } 4185 }; 4186 LauncherModel.filterItemInfos(children.keySet(), filter); 4187 4188 // Remove all the apps from their folders 4189 for (FolderInfo folder : folderAppsToRemove.keySet()) { 4190 ArrayList<ShortcutInfo> appsToRemove = folderAppsToRemove.get(folder); 4191 for (ShortcutInfo info : appsToRemove) { 4192 folder.remove(info); 4193 } 4194 } 4195 4196 // Remove all the other children 4197 for (View child : childrenToRemove) { 4198 // Note: We can not remove the view directly from CellLayoutChildren as this 4199 // does not re-mark the spaces as unoccupied. 4200 layoutParent.removeViewInLayout(child); 4201 if (child instanceof DropTarget) { 4202 mDragController.removeDropTarget((DropTarget) child); 4203 } 4204 } 4205 4206 if (childrenToRemove.size() > 0) { 4207 layout.requestLayout(); 4208 layout.invalidate(); 4209 } 4210 } 4211 4212 // Strip all the empty screens 4213 stripEmptyScreens(); 4214 } 4215 4216 interface ItemOperator { 4217 /** 4218 * Process the next itemInfo, possibly with side-effect on {@link ItemOperator#value}. 4219 * 4220 * @param info info for the shortcut 4221 * @param view view for the shortcut 4222 * @param parent containing folder, or null 4223 * @return true if done, false to continue the map 4224 */ 4225 public boolean evaluate(ItemInfo info, View view, View parent); 4226 } 4227 4228 /** 4229 * Map the operator over the shortcuts and widgets, return the first-non-null value. 4230 * 4231 * @param recurse true: iterate over folder children. false: op get the folders themselves. 4232 * @param op the operator to map over the shortcuts 4233 */ 4234 void mapOverItems(boolean recurse, ItemOperator op) { 4235 ArrayList<ShortcutAndWidgetContainer> containers = getAllShortcutAndWidgetContainers(); 4236 final int containerCount = containers.size(); 4237 for (int containerIdx = 0; containerIdx < containerCount; containerIdx++) { 4238 ShortcutAndWidgetContainer container = containers.get(containerIdx); 4239 // map over all the shortcuts on the workspace 4240 final int itemCount = container.getChildCount(); 4241 for (int itemIdx = 0; itemIdx < itemCount; itemIdx++) { 4242 View item = container.getChildAt(itemIdx); 4243 ItemInfo info = (ItemInfo) item.getTag(); 4244 if (recurse && info instanceof FolderInfo && item instanceof FolderIcon) { 4245 FolderIcon folder = (FolderIcon) item; 4246 ArrayList<View> folderChildren = folder.getFolder().getItemsInReadingOrder(); 4247 // map over all the children in the folder 4248 final int childCount = folderChildren.size(); 4249 for (int childIdx = 0; childIdx < childCount; childIdx++) { 4250 View child = folderChildren.get(childIdx); 4251 info = (ItemInfo) child.getTag(); 4252 if (op.evaluate(info, child, folder)) { 4253 return; 4254 } 4255 } 4256 } else { 4257 if (op.evaluate(info, item, null)) { 4258 return; 4259 } 4260 } 4261 } 4262 } 4263 } 4264 4265 void updateShortcuts(ArrayList<ShortcutInfo> shortcuts) { 4266 final HashSet<ShortcutInfo> updates = new HashSet<ShortcutInfo>(shortcuts); 4267 mapOverItems(MAP_RECURSE, new ItemOperator() { 4268 @Override 4269 public boolean evaluate(ItemInfo info, View v, View parent) { 4270 if (info instanceof ShortcutInfo && v instanceof BubbleTextView && 4271 updates.contains(info)) { 4272 ShortcutInfo si = (ShortcutInfo) info; 4273 BubbleTextView shortcut = (BubbleTextView) v; 4274 Drawable oldIcon = getTextViewIcon(shortcut); 4275 boolean oldPromiseState = (oldIcon instanceof PreloadIconDrawable) 4276 && ((PreloadIconDrawable) oldIcon).hasNotCompleted(); 4277 shortcut.applyFromShortcutInfo(si, mIconCache, 4278 si.isPromise() != oldPromiseState); 4279 4280 if (parent != null) { 4281 parent.invalidate(); 4282 } 4283 } 4284 // process all the shortcuts 4285 return false; 4286 } 4287 }); 4288 } 4289 4290 public void removeAbandonedPromise(String packageName, UserHandleCompat user) { 4291 ArrayList<String> packages = new ArrayList<String>(1); 4292 packages.add(packageName); 4293 LauncherModel.deletePackageFromDatabase(mLauncher, packageName, user); 4294 removeItemsByPackageName(packages, user); 4295 } 4296 4297 public void updateRestoreItems(final HashSet<ItemInfo> updates) { 4298 mapOverItems(MAP_RECURSE, new ItemOperator() { 4299 @Override 4300 public boolean evaluate(ItemInfo info, View v, View parent) { 4301 if (info instanceof ShortcutInfo && v instanceof BubbleTextView 4302 && updates.contains(info)) { 4303 ((BubbleTextView) v).applyState(false); 4304 } else if (v instanceof PendingAppWidgetHostView 4305 && info instanceof LauncherAppWidgetInfo 4306 && updates.contains(info)) { 4307 ((PendingAppWidgetHostView) v).applyState(); 4308 } 4309 // process all the shortcuts 4310 return false; 4311 } 4312 }); 4313 } 4314 4315 void widgetsRestored(ArrayList<LauncherAppWidgetInfo> changedInfo) { 4316 if (!changedInfo.isEmpty()) { 4317 DeferredWidgetRefresh widgetRefresh = new DeferredWidgetRefresh(changedInfo, 4318 mLauncher.getAppWidgetHost()); 4319 if (LauncherModel.getProviderInfo(getContext(), 4320 changedInfo.get(0).providerName, 4321 changedInfo.get(0).user) != null) { 4322 // Re-inflate the widgets which have changed status 4323 widgetRefresh.run(); 4324 } else { 4325 // widgetRefresh will automatically run when the packages are updated. 4326 // For now just update the progress bars 4327 for (LauncherAppWidgetInfo info : changedInfo) { 4328 if (info.hostView instanceof PendingAppWidgetHostView) { 4329 info.installProgress = 100; 4330 ((PendingAppWidgetHostView) info.hostView).applyState(); 4331 } 4332 } 4333 } 4334 } 4335 } 4336 4337 private void moveToScreen(int page, boolean animate) { 4338 if (!workspaceInModalState()) { 4339 if (animate) { 4340 snapToPage(page); 4341 } else { 4342 setCurrentPage(page); 4343 } 4344 } 4345 View child = getChildAt(page); 4346 if (child != null) { 4347 child.requestFocus(); 4348 } 4349 } 4350 4351 void moveToDefaultScreen(boolean animate) { 4352 moveToScreen(mDefaultPage, animate); 4353 } 4354 4355 void moveToCustomContentScreen(boolean animate) { 4356 if (hasCustomContent()) { 4357 int ccIndex = getPageIndexForScreenId(CUSTOM_CONTENT_SCREEN_ID); 4358 if (animate) { 4359 snapToPage(ccIndex); 4360 } else { 4361 setCurrentPage(ccIndex); 4362 } 4363 View child = getChildAt(ccIndex); 4364 if (child != null) { 4365 child.requestFocus(); 4366 } 4367 } 4368 exitWidgetResizeMode(); 4369 } 4370 4371 @Override 4372 protected PageIndicator.PageMarkerResources getPageIndicatorMarker(int pageIndex) { 4373 long screenId = getScreenIdForPageIndex(pageIndex); 4374 if (screenId == EXTRA_EMPTY_SCREEN_ID) { 4375 int count = mScreenOrder.size() - numCustomPages(); 4376 if (count > 1) { 4377 return new PageIndicator.PageMarkerResources(R.drawable.ic_pageindicator_current, 4378 R.drawable.ic_pageindicator_add); 4379 } 4380 } 4381 4382 return super.getPageIndicatorMarker(pageIndex); 4383 } 4384 4385 protected String getPageIndicatorDescription() { 4386 String settings = getResources().getString(R.string.settings_button_text); 4387 return getCurrentPageDescription() + ", " + settings; 4388 } 4389 4390 protected String getCurrentPageDescription() { 4391 if (hasCustomContent() && getNextPage() == 0) { 4392 return mCustomContentDescription; 4393 } 4394 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 4395 return getPageDescription(page); 4396 } 4397 4398 private String getPageDescription(int page) { 4399 int delta = numCustomPages(); 4400 return getContext().getString(R.string.workspace_scroll_format, 4401 page + 1 - delta, getChildCount() - delta); 4402 } 4403 4404 public void getLocationInDragLayer(int[] loc) { 4405 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 4406 } 4407 4408 @Override 4409 public void fillInLaunchSourceData(Bundle sourceData) { 4410 sourceData.putString(Stats.SOURCE_EXTRA_CONTAINER, Stats.CONTAINER_HOMESCREEN); 4411 sourceData.putInt(Stats.SOURCE_EXTRA_CONTAINER_PAGE, getCurrentPage()); 4412 } 4413 4414 /** 4415 * Used as a workaround to ensure that the AppWidgetService receives the 4416 * PACKAGE_ADDED broadcast before updating widgets. 4417 */ 4418 private class DeferredWidgetRefresh implements Runnable { 4419 private final ArrayList<LauncherAppWidgetInfo> mInfos; 4420 private final LauncherAppWidgetHost mHost; 4421 private final Handler mHandler; 4422 4423 private boolean mRefreshPending; 4424 4425 public DeferredWidgetRefresh(ArrayList<LauncherAppWidgetInfo> infos, 4426 LauncherAppWidgetHost host) { 4427 mInfos = infos; 4428 mHost = host; 4429 mHandler = new Handler(); 4430 mRefreshPending = true; 4431 4432 mHost.addProviderChangeListener(this); 4433 // Force refresh after 10 seconds, if we don't get the provider changed event. 4434 // This could happen when the provider is no longer available in the app. 4435 mHandler.postDelayed(this, 10000); 4436 } 4437 4438 @Override 4439 public void run() { 4440 mHost.removeProviderChangeListener(this); 4441 mHandler.removeCallbacks(this); 4442 4443 if (!mRefreshPending) { 4444 return; 4445 } 4446 4447 mRefreshPending = false; 4448 4449 for (LauncherAppWidgetInfo info : mInfos) { 4450 if (info.hostView instanceof PendingAppWidgetHostView) { 4451 PendingAppWidgetHostView view = (PendingAppWidgetHostView) info.hostView; 4452 mLauncher.removeAppWidget(info); 4453 4454 CellLayout cl = (CellLayout) view.getParent().getParent(); 4455 // Remove the current widget 4456 cl.removeView(view); 4457 mLauncher.bindAppWidget(info); 4458 } 4459 } 4460 } 4461 } 4462} 4463