Workspace.java revision a49b1f75cdf8efe88408173737a7b3c8f4b58a4c
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.SharedPreferences; 32import android.content.res.Resources; 33import android.content.res.TypedArray; 34import android.graphics.Bitmap; 35import android.graphics.Canvas; 36import android.graphics.Matrix; 37import android.graphics.Paint; 38import android.graphics.Point; 39import android.graphics.PointF; 40import android.graphics.Rect; 41import android.graphics.Region.Op; 42import android.graphics.drawable.Drawable; 43import android.os.AsyncTask; 44import android.os.Build; 45import android.os.Bundle; 46import android.os.Handler; 47import android.os.IBinder; 48import android.os.Parcelable; 49import android.util.AttributeSet; 50import android.util.Log; 51import android.util.SparseArray; 52import android.view.Choreographer; 53import android.view.Display; 54import android.view.MotionEvent; 55import android.view.View; 56import android.view.ViewGroup; 57import android.view.accessibility.AccessibilityManager; 58import android.view.animation.DecelerateInterpolator; 59import android.view.animation.Interpolator; 60import android.widget.TextView; 61 62import com.android.launcher3.FolderIcon.FolderRingAnimator; 63import com.android.launcher3.Launcher.CustomContentCallbacks; 64import com.android.launcher3.Launcher.LauncherOverlay; 65import com.android.launcher3.LauncherSettings.Favorites; 66import com.android.launcher3.UninstallDropTarget.UninstallSource; 67import com.android.launcher3.accessibility.LauncherAccessibilityDelegate; 68import com.android.launcher3.accessibility.LauncherAccessibilityDelegate.AccessibilityDragSource; 69import com.android.launcher3.accessibility.OverviewScreenAccessibilityDelegate; 70import com.android.launcher3.accessibility.WorkspaceAccessibilityHelper; 71import com.android.launcher3.compat.UserHandleCompat; 72import com.android.launcher3.util.LongArrayMap; 73import com.android.launcher3.util.Thunk; 74import com.android.launcher3.util.WallpaperUtils; 75import com.android.launcher3.widget.PendingAddShortcutInfo; 76import com.android.launcher3.widget.PendingAddWidgetInfo; 77 78import java.util.ArrayList; 79import java.util.HashMap; 80import java.util.HashSet; 81import java.util.concurrent.atomic.AtomicInteger; 82 83/** 84 * The workspace is a wide area with a wallpaper and a finite number of pages. 85 * Each page contains a number of icons, folders or widgets the user can 86 * interact with. A workspace is meant to be used with a fixed width only. 87 */ 88public class Workspace extends PagedView 89 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 90 DragController.DragListener, LauncherTransitionable, ViewGroup.OnHierarchyChangeListener, 91 Insettable, UninstallSource, AccessibilityDragSource, Stats.LaunchSourceProvider { 92 private static final String TAG = "Launcher.Workspace"; 93 94 private static boolean ENFORCE_DRAG_EVENT_ORDER = false; 95 96 protected static final int SNAP_OFF_EMPTY_SCREEN_DURATION = 400; 97 protected static final int FADE_EMPTY_SCREEN_DURATION = 150; 98 99 private static final int ADJACENT_SCREEN_DROP_DURATION = 300; 100 101 static final boolean MAP_NO_RECURSE = false; 102 static final boolean MAP_RECURSE = true; 103 104 private static final long CUSTOM_CONTENT_GESTURE_DELAY = 200; 105 private long mTouchDownTime = -1; 106 private long mCustomContentShowTime = -1; 107 108 private LayoutTransition mLayoutTransition; 109 @Thunk final WallpaperManager mWallpaperManager; 110 @Thunk IBinder mWindowToken; 111 112 private int mOriginalDefaultPage; 113 private int mDefaultPage; 114 115 private ShortcutAndWidgetContainer mDragSourceInternal; 116 117 // The screen id used for the empty screen always present to the right. 118 final static long EXTRA_EMPTY_SCREEN_ID = -201; 119 private final static long CUSTOM_CONTENT_SCREEN_ID = -301; 120 121 @Thunk LongArrayMap<CellLayout> mWorkspaceScreens = new LongArrayMap<>(); 122 @Thunk ArrayList<Long> mScreenOrder = new ArrayList<Long>(); 123 124 @Thunk Runnable mRemoveEmptyScreenRunnable; 125 @Thunk boolean mDeferRemoveExtraEmptyScreen = false; 126 @Thunk boolean mAddNewPageOnDrag = true; 127 128 /** 129 * CellInfo for the cell that is currently being dragged 130 */ 131 private CellLayout.CellInfo mDragInfo; 132 133 /** 134 * Target drop area calculated during last acceptDrop call. 135 */ 136 @Thunk int[] mTargetCell = new int[2]; 137 private int mDragOverX = -1; 138 private int mDragOverY = -1; 139 140 static Rect mLandscapeCellLayoutMetrics = null; 141 static Rect mPortraitCellLayoutMetrics = null; 142 143 CustomContentCallbacks mCustomContentCallbacks; 144 boolean mCustomContentShowing; 145 private float mLastCustomContentScrollProgress = -1f; 146 private String mCustomContentDescription = ""; 147 148 /** 149 * The CellLayout that is currently being dragged over 150 */ 151 @Thunk CellLayout mDragTargetLayout = null; 152 /** 153 * The CellLayout that we will show as glowing 154 */ 155 private CellLayout mDragOverlappingLayout = null; 156 157 /** 158 * The CellLayout which will be dropped to 159 */ 160 private CellLayout mDropToLayout = null; 161 162 @Thunk Launcher mLauncher; 163 @Thunk IconCache mIconCache; 164 @Thunk DragController mDragController; 165 166 // These are temporary variables to prevent having to allocate a new object just to 167 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 168 private int[] mTempCell = new int[2]; 169 private int[] mTempPt = new int[2]; 170 private int[] mTempEstimate = new int[2]; 171 @Thunk float[] mDragViewVisualCenter = new float[2]; 172 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 173 private Matrix mTempInverseMatrix = new Matrix(); 174 175 private SpringLoadedDragController mSpringLoadedDragController; 176 private float mSpringLoadedShrinkFactor; 177 private float mOverviewModeShrinkFactor; 178 179 // State variable that indicates whether the pages are small (ie when you're 180 // in all apps or customize mode) 181 182 enum State { 183 NORMAL (SearchDropTargetBar.State.SEARCH_BAR), 184 NORMAL_HIDDEN (SearchDropTargetBar.State.INVISIBLE), 185 SPRING_LOADED (SearchDropTargetBar.State.DROP_TARGET), 186 OVERVIEW (SearchDropTargetBar.State.INVISIBLE), 187 OVERVIEW_HIDDEN (SearchDropTargetBar.State.INVISIBLE); 188 189 private final SearchDropTargetBar.State mBarState; 190 191 State(SearchDropTargetBar.State searchBarState) { 192 mBarState = searchBarState; 193 } 194 195 public SearchDropTargetBar.State getSearchDropTargetBarState() { 196 return mBarState; 197 } 198 }; 199 200 private State mState = State.NORMAL; 201 private boolean mIsSwitchingState = false; 202 203 boolean mAnimatingViewIntoPlace = false; 204 boolean mIsDragOccuring = false; 205 boolean mChildrenLayersEnabled = true; 206 207 private boolean mStripScreensOnPageStopMoving = false; 208 209 /** Is the user is dragging an item near the edge of a page? */ 210 private boolean mInScrollArea = false; 211 212 private HolographicOutlineHelper mOutlineHelper; 213 @Thunk Bitmap mDragOutline = null; 214 private static final Rect sTempRect = new Rect(); 215 private final int[] mTempXY = new int[2]; 216 private int[] mTempVisiblePagesRange = new int[2]; 217 public static final int DRAG_BITMAP_PADDING = 2; 218 private boolean mWorkspaceFadeInAdjacentScreens; 219 220 WallpaperOffsetInterpolator mWallpaperOffset; 221 @Thunk boolean mWallpaperIsLiveWallpaper; 222 @Thunk int mNumPagesForWallpaperParallax; 223 @Thunk float mLastSetWallpaperOffsetSteps = 0; 224 225 @Thunk Runnable mDelayedResizeRunnable; 226 private Runnable mDelayedSnapToPageRunnable; 227 private Point mDisplaySize = new Point(); 228 229 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 230 private static final int FOLDER_CREATION_TIMEOUT = 0; 231 public static final int REORDER_TIMEOUT = 350; 232 private final Alarm mFolderCreationAlarm = new Alarm(); 233 private final Alarm mReorderAlarm = new Alarm(); 234 @Thunk FolderRingAnimator mDragFolderRingAnimator = null; 235 private FolderIcon mDragOverFolderIcon = null; 236 private boolean mCreateUserFolderOnDrop = false; 237 private boolean mAddToExistingFolderOnDrop = false; 238 private float mMaxDistanceForFolderCreation; 239 240 private final Canvas mCanvas = new Canvas(); 241 242 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 243 private float mXDown; 244 private float mYDown; 245 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 246 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 247 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 248 249 // Relating to the animation of items being dropped externally 250 public static final int ANIMATE_INTO_POSITION_AND_DISAPPEAR = 0; 251 public static final int ANIMATE_INTO_POSITION_AND_REMAIN = 1; 252 public static final int ANIMATE_INTO_POSITION_AND_RESIZE = 2; 253 public static final int COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION = 3; 254 public static final int CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION = 4; 255 256 // Related to dragging, folder creation and reordering 257 private static final int DRAG_MODE_NONE = 0; 258 private static final int DRAG_MODE_CREATE_FOLDER = 1; 259 private static final int DRAG_MODE_ADD_TO_FOLDER = 2; 260 private static final int DRAG_MODE_REORDER = 3; 261 private int mDragMode = DRAG_MODE_NONE; 262 @Thunk int mLastReorderX = -1; 263 @Thunk int mLastReorderY = -1; 264 265 private SparseArray<Parcelable> mSavedStates; 266 private final ArrayList<Integer> mRestoredPages = new ArrayList<Integer>(); 267 268 private float mCurrentScale; 269 private float mTransitionProgress; 270 271 @Thunk Runnable mDeferredAction; 272 private boolean mDeferDropAfterUninstall; 273 private boolean mUninstallSuccessful; 274 275 // State related to Launcher Overlay 276 LauncherOverlay mLauncherOverlay; 277 boolean mScrollInteractionBegan; 278 boolean mStartedSendingScrollEvents; 279 boolean mShouldSendPageSettled; 280 int mLastOverlaySroll = 0; 281 282 // Handles workspace state transitions 283 private WorkspaceStateTransitionAnimation mStateTransitionAnimation; 284 285 private AccessibilityDelegate mPagesAccessibilityDelegate; 286 287 private final Runnable mBindPages = new Runnable() { 288 @Override 289 public void run() { 290 mLauncher.getModel().bindRemainingSynchronousPages(); 291 } 292 }; 293 294 /** 295 * Used to inflate the Workspace from XML. 296 * 297 * @param context The application's context. 298 * @param attrs The attributes set containing the Workspace's customization values. 299 */ 300 public Workspace(Context context, AttributeSet attrs) { 301 this(context, attrs, 0); 302 } 303 304 /** 305 * Used to inflate the Workspace from XML. 306 * 307 * @param context The application's context. 308 * @param attrs The attributes set containing the Workspace's customization values. 309 * @param defStyle Unused. 310 */ 311 public Workspace(Context context, AttributeSet attrs, int defStyle) { 312 super(context, attrs, defStyle); 313 314 mOutlineHelper = HolographicOutlineHelper.obtain(context); 315 316 mLauncher = (Launcher) context; 317 mStateTransitionAnimation = new WorkspaceStateTransitionAnimation(mLauncher, this); 318 final Resources res = getResources(); 319 DeviceProfile grid = mLauncher.getDeviceProfile(); 320 mWorkspaceFadeInAdjacentScreens = grid.shouldFadeAdjacentWorkspaceScreens(); 321 mFadeInAdjacentScreens = false; 322 mWallpaperManager = WallpaperManager.getInstance(context); 323 324 TypedArray a = context.obtainStyledAttributes(attrs, 325 R.styleable.Workspace, defStyle, 0); 326 mSpringLoadedShrinkFactor = 327 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 328 mOverviewModeShrinkFactor = 329 res.getInteger(R.integer.config_workspaceOverviewShrinkPercentage) / 100f; 330 mOriginalDefaultPage = mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 331 a.recycle(); 332 333 setOnHierarchyChangeListener(this); 334 setHapticFeedbackEnabled(false); 335 336 initWorkspace(); 337 338 // Disable multitouch across the workspace/all apps/customize tray 339 setMotionEventSplittingEnabled(true); 340 } 341 342 @Override 343 public void setInsets(Rect insets) { 344 mInsets.set(insets); 345 346 CellLayout customScreen = getScreenWithId(CUSTOM_CONTENT_SCREEN_ID); 347 if (customScreen != null) { 348 View customContent = customScreen.getShortcutsAndWidgets().getChildAt(0); 349 if (customContent instanceof Insettable) { 350 ((Insettable) customContent).setInsets(mInsets); 351 } 352 } 353 } 354 355 // estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each 356 // dimension if unsuccessful 357 public int[] estimateItemSize(ItemInfo itemInfo, boolean springLoaded) { 358 int[] size = new int[2]; 359 if (getChildCount() > 0) { 360 // Use the first non-custom page to estimate the child position 361 CellLayout cl = (CellLayout) getChildAt(numCustomPages()); 362 Rect r = estimateItemPosition(cl, itemInfo, 0, 0, itemInfo.spanX, itemInfo.spanY); 363 size[0] = r.width(); 364 size[1] = r.height(); 365 if (springLoaded) { 366 size[0] *= mSpringLoadedShrinkFactor; 367 size[1] *= mSpringLoadedShrinkFactor; 368 } 369 return size; 370 } else { 371 size[0] = Integer.MAX_VALUE; 372 size[1] = Integer.MAX_VALUE; 373 return size; 374 } 375 } 376 377 public Rect estimateItemPosition(CellLayout cl, ItemInfo pendingInfo, 378 int hCell, int vCell, int hSpan, int vSpan) { 379 Rect r = new Rect(); 380 cl.cellToRect(hCell, vCell, hSpan, vSpan, r); 381 return r; 382 } 383 384 @Override 385 public void onDragStart(final DragSource source, Object info, int dragAction) { 386 if (ENFORCE_DRAG_EVENT_ORDER) { 387 enfoceDragParity("onDragStart", 0, 0); 388 } 389 390 mIsDragOccuring = true; 391 updateChildrenLayersEnabled(false); 392 mLauncher.lockScreenOrientation(); 393 mLauncher.onInteractionBegin(); 394 // Prevent any Un/InstallShortcutReceivers from updating the db while we are dragging 395 InstallShortcutReceiver.enableInstallQueue(); 396 397 if (mAddNewPageOnDrag) { 398 mDeferRemoveExtraEmptyScreen = false; 399 addExtraEmptyScreenOnDrag(); 400 } 401 } 402 403 public void setAddNewPageOnDrag(boolean addPage) { 404 mAddNewPageOnDrag = addPage; 405 } 406 407 public void deferRemoveExtraEmptyScreen() { 408 mDeferRemoveExtraEmptyScreen = true; 409 } 410 411 @Override 412 public void onDragEnd() { 413 if (ENFORCE_DRAG_EVENT_ORDER) { 414 enfoceDragParity("onDragEnd", 0, 0); 415 } 416 417 if (!mDeferRemoveExtraEmptyScreen) { 418 removeExtraEmptyScreen(true, mDragSourceInternal != null); 419 } 420 421 mIsDragOccuring = false; 422 updateChildrenLayersEnabled(false); 423 mLauncher.unlockScreenOrientation(false); 424 425 // Re-enable any Un/InstallShortcutReceiver and now process any queued items 426 InstallShortcutReceiver.disableAndFlushInstallQueue(getContext()); 427 428 mDragSourceInternal = null; 429 mLauncher.onInteractionEnd(); 430 } 431 432 /** 433 * Initializes various states for this workspace. 434 */ 435 protected void initWorkspace() { 436 mCurrentPage = mDefaultPage; 437 LauncherAppState app = LauncherAppState.getInstance(); 438 DeviceProfile grid = mLauncher.getDeviceProfile(); 439 mIconCache = app.getIconCache(); 440 setWillNotDraw(false); 441 setClipChildren(false); 442 setClipToPadding(false); 443 setChildrenDrawnWithCacheEnabled(true); 444 445 setMinScale(mOverviewModeShrinkFactor); 446 setupLayoutTransition(); 447 448 mWallpaperOffset = new WallpaperOffsetInterpolator(); 449 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 450 display.getSize(mDisplaySize); 451 452 mMaxDistanceForFolderCreation = (0.55f * grid.iconSizePx); 453 454 // Set the wallpaper dimensions when Launcher starts up 455 setWallpaperDimension(); 456 457 setEdgeGlowColor(getResources().getColor(R.color.workspace_edge_effect_color)); 458 mIgnoreRightInset = app.getInvariantDeviceProfile().isRightInsetOpaque; 459 } 460 461 private void setupLayoutTransition() { 462 // We want to show layout transitions when pages are deleted, to close the gap. 463 mLayoutTransition = new LayoutTransition(); 464 mLayoutTransition.enableTransitionType(LayoutTransition.DISAPPEARING); 465 mLayoutTransition.enableTransitionType(LayoutTransition.CHANGE_DISAPPEARING); 466 mLayoutTransition.disableTransitionType(LayoutTransition.APPEARING); 467 mLayoutTransition.disableTransitionType(LayoutTransition.CHANGE_APPEARING); 468 setLayoutTransition(mLayoutTransition); 469 } 470 471 void enableLayoutTransitions() { 472 setLayoutTransition(mLayoutTransition); 473 } 474 void disableLayoutTransitions() { 475 setLayoutTransition(null); 476 } 477 478 @Override 479 public void onChildViewAdded(View parent, View child) { 480 if (!(child instanceof CellLayout)) { 481 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 482 } 483 CellLayout cl = ((CellLayout) child); 484 cl.setOnInterceptTouchListener(this); 485 cl.setClickable(true); 486 cl.setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_NO); 487 super.onChildViewAdded(parent, child); 488 } 489 490 protected boolean shouldDrawChild(View child) { 491 final CellLayout cl = (CellLayout) child; 492 return super.shouldDrawChild(child) && 493 (mIsSwitchingState || 494 cl.getShortcutsAndWidgets().getAlpha() > 0 || 495 cl.getBackgroundAlpha() > 0); 496 } 497 498 /** 499 * @return The open folder on the current screen, or null if there is none 500 */ 501 public Folder getOpenFolder() { 502 DragLayer dragLayer = mLauncher.getDragLayer(); 503 int count = dragLayer.getChildCount(); 504 for (int i = 0; i < count; i++) { 505 View child = dragLayer.getChildAt(i); 506 if (child instanceof Folder) { 507 Folder folder = (Folder) child; 508 if (folder.getInfo().opened) 509 return folder; 510 } 511 } 512 return null; 513 } 514 515 boolean isTouchActive() { 516 return mTouchState != TOUCH_STATE_REST; 517 } 518 519 public void removeAllWorkspaceScreens() { 520 // Disable all layout transitions before removing all pages to ensure that we don't get the 521 // transition animations competing with us changing the scroll when we add pages or the 522 // custom content screen 523 disableLayoutTransitions(); 524 525 // Since we increment the current page when we call addCustomContentPage via bindScreens 526 // (and other places), we need to adjust the current page back when we clear the pages 527 if (hasCustomContent()) { 528 removeCustomContentPage(); 529 } 530 531 // Remove the pages and clear the screen models 532 removeAllViews(); 533 mScreenOrder.clear(); 534 mWorkspaceScreens.clear(); 535 536 // Re-enable the layout transitions 537 enableLayoutTransitions(); 538 } 539 540 public long insertNewWorkspaceScreenBeforeEmptyScreen(long screenId) { 541 // Find the index to insert this view into. If the empty screen exists, then 542 // insert it before that. 543 int insertIndex = mScreenOrder.indexOf(EXTRA_EMPTY_SCREEN_ID); 544 if (insertIndex < 0) { 545 insertIndex = mScreenOrder.size(); 546 } 547 return insertNewWorkspaceScreen(screenId, insertIndex); 548 } 549 550 public long insertNewWorkspaceScreen(long screenId) { 551 return insertNewWorkspaceScreen(screenId, getChildCount()); 552 } 553 554 public long insertNewWorkspaceScreen(long screenId, int insertIndex) { 555 if (mWorkspaceScreens.containsKey(screenId)) { 556 throw new RuntimeException("Screen id " + screenId + " already exists!"); 557 } 558 559 // Inflate the cell layout, but do not add it automatically so that we can get the newly 560 // created CellLayout. 561 CellLayout newScreen = (CellLayout) mLauncher.getLayoutInflater().inflate( 562 R.layout.workspace_screen, this, false /* attachToRoot */); 563 564 newScreen.setOnLongClickListener(mLongClickListener); 565 newScreen.setOnClickListener(mLauncher); 566 newScreen.setSoundEffectsEnabled(false); 567 mWorkspaceScreens.put(screenId, newScreen); 568 mScreenOrder.add(insertIndex, screenId); 569 addView(newScreen, insertIndex); 570 571 LauncherAccessibilityDelegate delegate = 572 LauncherAppState.getInstance().getAccessibilityDelegate(); 573 if (delegate != null && delegate.isInAccessibleDrag()) { 574 newScreen.enableAccessibleDrag(true, CellLayout.WORKSPACE_ACCESSIBILITY_DRAG); 575 } 576 return screenId; 577 } 578 579 public void createCustomContentContainer() { 580 CellLayout customScreen = (CellLayout) 581 mLauncher.getLayoutInflater().inflate(R.layout.workspace_screen, this, false); 582 customScreen.disableDragTarget(); 583 customScreen.disableJailContent(); 584 585 mWorkspaceScreens.put(CUSTOM_CONTENT_SCREEN_ID, customScreen); 586 mScreenOrder.add(0, CUSTOM_CONTENT_SCREEN_ID); 587 588 // We want no padding on the custom content 589 customScreen.setPadding(0, 0, 0, 0); 590 591 addFullScreenPage(customScreen); 592 593 // Ensure that the current page and default page are maintained. 594 mDefaultPage = mOriginalDefaultPage + 1; 595 596 // Update the custom content hint 597 if (mRestorePage != INVALID_RESTORE_PAGE) { 598 mRestorePage = mRestorePage + 1; 599 } else { 600 setCurrentPage(getCurrentPage() + 1); 601 } 602 } 603 604 public void removeCustomContentPage() { 605 CellLayout customScreen = getScreenWithId(CUSTOM_CONTENT_SCREEN_ID); 606 if (customScreen == null) { 607 throw new RuntimeException("Expected custom content screen to exist"); 608 } 609 610 mWorkspaceScreens.remove(CUSTOM_CONTENT_SCREEN_ID); 611 mScreenOrder.remove(CUSTOM_CONTENT_SCREEN_ID); 612 removeView(customScreen); 613 614 if (mCustomContentCallbacks != null) { 615 mCustomContentCallbacks.onScrollProgressChanged(0); 616 mCustomContentCallbacks.onHide(); 617 } 618 619 mCustomContentCallbacks = null; 620 621 // Ensure that the current page and default page are maintained. 622 mDefaultPage = mOriginalDefaultPage - 1; 623 624 // Update the custom content hint 625 if (mRestorePage != INVALID_RESTORE_PAGE) { 626 mRestorePage = mRestorePage - 1; 627 } else { 628 setCurrentPage(getCurrentPage() - 1); 629 } 630 } 631 632 public void addToCustomContentPage(View customContent, CustomContentCallbacks callbacks, 633 String description) { 634 if (getPageIndexForScreenId(CUSTOM_CONTENT_SCREEN_ID) < 0) { 635 throw new RuntimeException("Expected custom content screen to exist"); 636 } 637 638 // Add the custom content to the full screen custom page 639 CellLayout customScreen = getScreenWithId(CUSTOM_CONTENT_SCREEN_ID); 640 int spanX = customScreen.getCountX(); 641 int spanY = customScreen.getCountY(); 642 CellLayout.LayoutParams lp = new CellLayout.LayoutParams(0, 0, spanX, spanY); 643 lp.canReorder = false; 644 lp.isFullscreen = true; 645 if (customContent instanceof Insettable) { 646 ((Insettable)customContent).setInsets(mInsets); 647 } 648 649 // Verify that the child is removed from any existing parent. 650 if (customContent.getParent() instanceof ViewGroup) { 651 ViewGroup parent = (ViewGroup) customContent.getParent(); 652 parent.removeView(customContent); 653 } 654 customScreen.removeAllViews(); 655 customScreen.addViewToCellLayout(customContent, 0, 0, lp, true); 656 mCustomContentDescription = description; 657 658 mCustomContentCallbacks = callbacks; 659 } 660 661 public void addExtraEmptyScreenOnDrag() { 662 boolean lastChildOnScreen = false; 663 boolean childOnFinalScreen = false; 664 665 // Cancel any pending removal of empty screen 666 mRemoveEmptyScreenRunnable = null; 667 668 if (mDragSourceInternal != null) { 669 if (mDragSourceInternal.getChildCount() == 1) { 670 lastChildOnScreen = true; 671 } 672 CellLayout cl = (CellLayout) mDragSourceInternal.getParent(); 673 if (indexOfChild(cl) == getChildCount() - 1) { 674 childOnFinalScreen = true; 675 } 676 } 677 678 // If this is the last item on the final screen 679 if (lastChildOnScreen && childOnFinalScreen) { 680 return; 681 } 682 if (!mWorkspaceScreens.containsKey(EXTRA_EMPTY_SCREEN_ID)) { 683 insertNewWorkspaceScreen(EXTRA_EMPTY_SCREEN_ID); 684 } 685 } 686 687 public boolean addExtraEmptyScreen() { 688 if (!mWorkspaceScreens.containsKey(EXTRA_EMPTY_SCREEN_ID)) { 689 insertNewWorkspaceScreen(EXTRA_EMPTY_SCREEN_ID); 690 return true; 691 } 692 return false; 693 } 694 695 private void convertFinalScreenToEmptyScreenIfNecessary() { 696 if (mLauncher.isWorkspaceLoading()) { 697 // Invalid and dangerous operation if workspace is loading 698 Launcher.addDumpLog(TAG, " - workspace loading, skip", true); 699 return; 700 } 701 702 if (hasExtraEmptyScreen() || mScreenOrder.size() == 0) return; 703 long finalScreenId = mScreenOrder.get(mScreenOrder.size() - 1); 704 705 if (finalScreenId == CUSTOM_CONTENT_SCREEN_ID) return; 706 CellLayout finalScreen = mWorkspaceScreens.get(finalScreenId); 707 708 // If the final screen is empty, convert it to the extra empty screen 709 if (finalScreen.getShortcutsAndWidgets().getChildCount() == 0 && 710 !finalScreen.isDropPending()) { 711 mWorkspaceScreens.remove(finalScreenId); 712 mScreenOrder.remove(finalScreenId); 713 714 // if this is the last non-custom content screen, convert it to the empty screen 715 mWorkspaceScreens.put(EXTRA_EMPTY_SCREEN_ID, finalScreen); 716 mScreenOrder.add(EXTRA_EMPTY_SCREEN_ID); 717 718 // Update the model if we have changed any screens 719 mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); 720 } 721 } 722 723 public void removeExtraEmptyScreen(final boolean animate, boolean stripEmptyScreens) { 724 removeExtraEmptyScreenDelayed(animate, null, 0, stripEmptyScreens); 725 } 726 727 public void removeExtraEmptyScreenDelayed(final boolean animate, final Runnable onComplete, 728 final int delay, final boolean stripEmptyScreens) { 729 if (mLauncher.isWorkspaceLoading()) { 730 // Don't strip empty screens if the workspace is still loading 731 Launcher.addDumpLog(TAG, " - workspace loading, skip", true); 732 return; 733 } 734 735 if (delay > 0) { 736 postDelayed(new Runnable() { 737 @Override 738 public void run() { 739 removeExtraEmptyScreenDelayed(animate, onComplete, 0, stripEmptyScreens); 740 } 741 }, delay); 742 return; 743 } 744 745 convertFinalScreenToEmptyScreenIfNecessary(); 746 if (hasExtraEmptyScreen()) { 747 int emptyIndex = mScreenOrder.indexOf(EXTRA_EMPTY_SCREEN_ID); 748 if (getNextPage() == emptyIndex) { 749 snapToPage(getNextPage() - 1, SNAP_OFF_EMPTY_SCREEN_DURATION); 750 fadeAndRemoveEmptyScreen(SNAP_OFF_EMPTY_SCREEN_DURATION, FADE_EMPTY_SCREEN_DURATION, 751 onComplete, stripEmptyScreens); 752 } else { 753 snapToPage(getNextPage(), 0); 754 fadeAndRemoveEmptyScreen(0, FADE_EMPTY_SCREEN_DURATION, 755 onComplete, stripEmptyScreens); 756 } 757 return; 758 } else if (stripEmptyScreens) { 759 // If we're not going to strip the empty screens after removing 760 // the extra empty screen, do it right away. 761 stripEmptyScreens(); 762 } 763 764 if (onComplete != null) { 765 onComplete.run(); 766 } 767 } 768 769 private void fadeAndRemoveEmptyScreen(int delay, int duration, final Runnable onComplete, 770 final boolean stripEmptyScreens) { 771 // XXX: Do we need to update LM workspace screens below? 772 PropertyValuesHolder alpha = PropertyValuesHolder.ofFloat("alpha", 0f); 773 PropertyValuesHolder bgAlpha = PropertyValuesHolder.ofFloat("backgroundAlpha", 0f); 774 775 final CellLayout cl = mWorkspaceScreens.get(EXTRA_EMPTY_SCREEN_ID); 776 777 mRemoveEmptyScreenRunnable = new Runnable() { 778 @Override 779 public void run() { 780 if (hasExtraEmptyScreen()) { 781 mWorkspaceScreens.remove(EXTRA_EMPTY_SCREEN_ID); 782 mScreenOrder.remove(EXTRA_EMPTY_SCREEN_ID); 783 removeView(cl); 784 if (stripEmptyScreens) { 785 stripEmptyScreens(); 786 } 787 } 788 } 789 }; 790 791 ObjectAnimator oa = ObjectAnimator.ofPropertyValuesHolder(cl, alpha, bgAlpha); 792 oa.setDuration(duration); 793 oa.setStartDelay(delay); 794 oa.addListener(new AnimatorListenerAdapter() { 795 @Override 796 public void onAnimationEnd(Animator animation) { 797 if (mRemoveEmptyScreenRunnable != null) { 798 mRemoveEmptyScreenRunnable.run(); 799 } 800 if (onComplete != null) { 801 onComplete.run(); 802 } 803 } 804 }); 805 oa.start(); 806 } 807 808 public boolean hasExtraEmptyScreen() { 809 int nScreens = getChildCount(); 810 nScreens = nScreens - numCustomPages(); 811 return mWorkspaceScreens.containsKey(EXTRA_EMPTY_SCREEN_ID) && nScreens > 1; 812 } 813 814 public long commitExtraEmptyScreen() { 815 if (mLauncher.isWorkspaceLoading()) { 816 // Invalid and dangerous operation if workspace is loading 817 Launcher.addDumpLog(TAG, " - workspace loading, skip", true); 818 return -1; 819 } 820 821 int index = getPageIndexForScreenId(EXTRA_EMPTY_SCREEN_ID); 822 CellLayout cl = mWorkspaceScreens.get(EXTRA_EMPTY_SCREEN_ID); 823 mWorkspaceScreens.remove(EXTRA_EMPTY_SCREEN_ID); 824 mScreenOrder.remove(EXTRA_EMPTY_SCREEN_ID); 825 826 long newId = LauncherAppState.getLauncherProvider().generateNewScreenId(); 827 mWorkspaceScreens.put(newId, cl); 828 mScreenOrder.add(newId); 829 830 // Update the page indicator marker 831 if (getPageIndicator() != null) { 832 getPageIndicator().updateMarker(index, getPageIndicatorMarker(index)); 833 } 834 835 // Update the model for the new screen 836 mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); 837 838 return newId; 839 } 840 841 public CellLayout getScreenWithId(long screenId) { 842 CellLayout layout = mWorkspaceScreens.get(screenId); 843 return layout; 844 } 845 846 public long getIdForScreen(CellLayout layout) { 847 int index = mWorkspaceScreens.indexOfValue(layout); 848 if (index != -1) { 849 return mWorkspaceScreens.keyAt(index); 850 } 851 return -1; 852 } 853 854 public int getPageIndexForScreenId(long screenId) { 855 return indexOfChild(mWorkspaceScreens.get(screenId)); 856 } 857 858 public long getScreenIdForPageIndex(int index) { 859 if (0 <= index && index < mScreenOrder.size()) { 860 return mScreenOrder.get(index); 861 } 862 return -1; 863 } 864 865 public ArrayList<Long> getScreenOrder() { 866 return mScreenOrder; 867 } 868 869 public void stripEmptyScreens() { 870 if (mLauncher.isWorkspaceLoading()) { 871 // Don't strip empty screens if the workspace is still loading. 872 // This is dangerous and can result in data loss. 873 Launcher.addDumpLog(TAG, " - workspace loading, skip", true); 874 return; 875 } 876 877 if (isPageMoving()) { 878 mStripScreensOnPageStopMoving = true; 879 return; 880 } 881 882 int currentPage = getNextPage(); 883 ArrayList<Long> removeScreens = new ArrayList<Long>(); 884 int total = mWorkspaceScreens.size(); 885 for (int i = 0; i < total; i++) { 886 long id = mWorkspaceScreens.keyAt(i); 887 CellLayout cl = mWorkspaceScreens.valueAt(i); 888 if (id >= 0 && cl.getShortcutsAndWidgets().getChildCount() == 0) { 889 removeScreens.add(id); 890 } 891 } 892 893 LauncherAccessibilityDelegate delegate = 894 LauncherAppState.getInstance().getAccessibilityDelegate(); 895 896 // We enforce at least one page to add new items to. In the case that we remove the last 897 // such screen, we convert the last screen to the empty screen 898 int minScreens = 1 + numCustomPages(); 899 900 int pageShift = 0; 901 for (Long id: removeScreens) { 902 CellLayout cl = mWorkspaceScreens.get(id); 903 mWorkspaceScreens.remove(id); 904 mScreenOrder.remove(id); 905 906 if (getChildCount() > minScreens) { 907 if (indexOfChild(cl) < currentPage) { 908 pageShift++; 909 } 910 911 if (delegate != null && delegate.isInAccessibleDrag()) { 912 cl.enableAccessibleDrag(false, CellLayout.WORKSPACE_ACCESSIBILITY_DRAG); 913 } 914 915 removeView(cl); 916 } else { 917 // if this is the last non-custom content screen, convert it to the empty screen 918 mRemoveEmptyScreenRunnable = null; 919 mWorkspaceScreens.put(EXTRA_EMPTY_SCREEN_ID, cl); 920 mScreenOrder.add(EXTRA_EMPTY_SCREEN_ID); 921 } 922 } 923 924 if (!removeScreens.isEmpty()) { 925 // Update the model if we have changed any screens 926 mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); 927 } 928 929 if (pageShift >= 0) { 930 setCurrentPage(currentPage - pageShift); 931 } 932 } 933 934 // See implementation for parameter definition. 935 void addInScreen(View child, long container, long screenId, 936 int x, int y, int spanX, int spanY) { 937 addInScreen(child, container, screenId, x, y, spanX, spanY, false, false); 938 } 939 940 // At bind time, we use the rank (screenId) to compute x and y for hotseat items. 941 // See implementation for parameter definition. 942 void addInScreenFromBind(View child, long container, long screenId, int x, int y, 943 int spanX, int spanY) { 944 addInScreen(child, container, screenId, x, y, spanX, spanY, false, true); 945 } 946 947 // See implementation for parameter definition. 948 void addInScreen(View child, long container, long screenId, int x, int y, int spanX, int spanY, 949 boolean insert) { 950 addInScreen(child, container, screenId, x, y, spanX, spanY, insert, false); 951 } 952 953 /** 954 * Adds the specified child in the specified screen. The position and dimension of 955 * the child are defined by x, y, spanX and spanY. 956 * 957 * @param child The child to add in one of the workspace's screens. 958 * @param screenId The screen in which to add the child. 959 * @param x The X position of the child in the screen's grid. 960 * @param y The Y position of the child in the screen's grid. 961 * @param spanX The number of cells spanned horizontally by the child. 962 * @param spanY The number of cells spanned vertically by the child. 963 * @param insert When true, the child is inserted at the beginning of the children list. 964 * @param computeXYFromRank When true, we use the rank (stored in screenId) to compute 965 * the x and y position in which to place hotseat items. Otherwise 966 * we use the x and y position to compute the rank. 967 */ 968 void addInScreen(View child, long container, long screenId, int x, int y, int spanX, int spanY, 969 boolean insert, boolean computeXYFromRank) { 970 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 971 if (getScreenWithId(screenId) == null) { 972 Log.e(TAG, "Skipping child, screenId " + screenId + " not found"); 973 // DEBUGGING - Print out the stack trace to see where we are adding from 974 new Throwable().printStackTrace(); 975 return; 976 } 977 } 978 if (screenId == EXTRA_EMPTY_SCREEN_ID) { 979 // This should never happen 980 throw new RuntimeException("Screen id should not be EXTRA_EMPTY_SCREEN_ID"); 981 } 982 983 final CellLayout layout; 984 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 985 layout = mLauncher.getHotseat().getLayout(); 986 child.setOnKeyListener(new HotseatIconKeyEventListener()); 987 988 // Hide folder title in the hotseat 989 if (child instanceof FolderIcon) { 990 ((FolderIcon) child).setTextVisible(false); 991 } 992 993 if (computeXYFromRank) { 994 x = mLauncher.getHotseat().getCellXFromOrder((int) screenId); 995 y = mLauncher.getHotseat().getCellYFromOrder((int) screenId); 996 } else { 997 screenId = mLauncher.getHotseat().getOrderInHotseat(x, y); 998 } 999 } else { 1000 // Show folder title if not in the hotseat 1001 if (child instanceof FolderIcon) { 1002 ((FolderIcon) child).setTextVisible(true); 1003 } 1004 layout = getScreenWithId(screenId); 1005 child.setOnKeyListener(new IconKeyEventListener()); 1006 } 1007 1008 ViewGroup.LayoutParams genericLp = child.getLayoutParams(); 1009 CellLayout.LayoutParams lp; 1010 if (genericLp == null || !(genericLp instanceof CellLayout.LayoutParams)) { 1011 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 1012 } else { 1013 lp = (CellLayout.LayoutParams) genericLp; 1014 lp.cellX = x; 1015 lp.cellY = y; 1016 lp.cellHSpan = spanX; 1017 lp.cellVSpan = spanY; 1018 } 1019 1020 if (spanX < 0 && spanY < 0) { 1021 lp.isLockedToGrid = false; 1022 } 1023 1024 // Get the canonical child id to uniquely represent this view in this screen 1025 ItemInfo info = (ItemInfo) child.getTag(); 1026 int childId = mLauncher.getViewIdForItem(info); 1027 1028 boolean markCellsAsOccupied = !(child instanceof Folder); 1029 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 1030 // TODO: This branch occurs when the workspace is adding views 1031 // outside of the defined grid 1032 // maybe we should be deleting these items from the LauncherModel? 1033 Launcher.addDumpLog(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout", true); 1034 } 1035 1036 if (!(child instanceof Folder)) { 1037 child.setHapticFeedbackEnabled(false); 1038 child.setOnLongClickListener(mLongClickListener); 1039 } 1040 if (child instanceof DropTarget) { 1041 mDragController.addDropTarget((DropTarget) child); 1042 } 1043 } 1044 1045 /** 1046 * Called directly from a CellLayout (not by the framework), after we've been added as a 1047 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 1048 * that it should intercept touch events, which is not something that is normally supported. 1049 */ 1050 @SuppressLint("ClickableViewAccessibility") 1051 @Override 1052 public boolean onTouch(View v, MotionEvent event) { 1053 return (workspaceInModalState() || !isFinishedSwitchingState()) 1054 || (!workspaceInModalState() && indexOfChild(v) != mCurrentPage); 1055 } 1056 1057 public boolean isSwitchingState() { 1058 return mIsSwitchingState; 1059 } 1060 1061 /** This differs from isSwitchingState in that we take into account how far the transition 1062 * has completed. */ 1063 public boolean isFinishedSwitchingState() { 1064 return !mIsSwitchingState || (mTransitionProgress > 0.5f); 1065 } 1066 1067 protected void onWindowVisibilityChanged (int visibility) { 1068 mLauncher.onWindowVisibilityChanged(visibility); 1069 } 1070 1071 @Override 1072 public boolean dispatchUnhandledMove(View focused, int direction) { 1073 if (workspaceInModalState() || !isFinishedSwitchingState()) { 1074 // when the home screens are shrunken, shouldn't allow side-scrolling 1075 return false; 1076 } 1077 return super.dispatchUnhandledMove(focused, direction); 1078 } 1079 1080 @Override 1081 public boolean onInterceptTouchEvent(MotionEvent ev) { 1082 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 1083 case MotionEvent.ACTION_DOWN: 1084 mXDown = ev.getX(); 1085 mYDown = ev.getY(); 1086 mTouchDownTime = System.currentTimeMillis(); 1087 break; 1088 case MotionEvent.ACTION_POINTER_UP: 1089 case MotionEvent.ACTION_UP: 1090 if (mTouchState == TOUCH_STATE_REST) { 1091 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 1092 if (currentPage != null) { 1093 onWallpaperTap(ev); 1094 } 1095 } 1096 } 1097 return super.onInterceptTouchEvent(ev); 1098 } 1099 1100 @Override 1101 public boolean onGenericMotionEvent(MotionEvent event) { 1102 // Ignore pointer scroll events if the custom content doesn't allow scrolling. 1103 if ((getScreenIdForPageIndex(getCurrentPage()) == CUSTOM_CONTENT_SCREEN_ID) 1104 && (mCustomContentCallbacks != null) 1105 && !mCustomContentCallbacks.isScrollingAllowed()) { 1106 return false; 1107 } 1108 return super.onGenericMotionEvent(event); 1109 } 1110 1111 protected void reinflateWidgetsIfNecessary() { 1112 final int clCount = getChildCount(); 1113 for (int i = 0; i < clCount; i++) { 1114 CellLayout cl = (CellLayout) getChildAt(i); 1115 ShortcutAndWidgetContainer swc = cl.getShortcutsAndWidgets(); 1116 final int itemCount = swc.getChildCount(); 1117 for (int j = 0; j < itemCount; j++) { 1118 View v = swc.getChildAt(j); 1119 1120 if (v != null && v.getTag() instanceof LauncherAppWidgetInfo) { 1121 LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) v.getTag(); 1122 LauncherAppWidgetHostView lahv = (LauncherAppWidgetHostView) info.hostView; 1123 if (lahv != null && lahv.isReinflateRequired()) { 1124 // Remove and rebind the current widget (which was inflated in the wrong 1125 // orientation), but don't delete it from the database 1126 mLauncher.removeItem(lahv, info, false /* deleteFromDb */); 1127 mLauncher.bindAppWidget(info); 1128 } 1129 } 1130 } 1131 } 1132 } 1133 1134 @Override 1135 protected void determineScrollingStart(MotionEvent ev) { 1136 if (!isFinishedSwitchingState()) return; 1137 1138 float deltaX = ev.getX() - mXDown; 1139 float absDeltaX = Math.abs(deltaX); 1140 float absDeltaY = Math.abs(ev.getY() - mYDown); 1141 1142 if (Float.compare(absDeltaX, 0f) == 0) return; 1143 1144 float slope = absDeltaY / absDeltaX; 1145 float theta = (float) Math.atan(slope); 1146 1147 if (absDeltaX > mTouchSlop || absDeltaY > mTouchSlop) { 1148 cancelCurrentPageLongPress(); 1149 } 1150 1151 boolean passRightSwipesToCustomContent = 1152 (mTouchDownTime - mCustomContentShowTime) > CUSTOM_CONTENT_GESTURE_DELAY; 1153 1154 boolean swipeInIgnoreDirection = mIsRtl ? deltaX < 0 : deltaX > 0; 1155 boolean onCustomContentScreen = 1156 getScreenIdForPageIndex(getCurrentPage()) == CUSTOM_CONTENT_SCREEN_ID; 1157 if (swipeInIgnoreDirection && onCustomContentScreen && passRightSwipesToCustomContent) { 1158 // Pass swipes to the right to the custom content page. 1159 return; 1160 } 1161 1162 if (onCustomContentScreen && (mCustomContentCallbacks != null) 1163 && !mCustomContentCallbacks.isScrollingAllowed()) { 1164 // Don't allow workspace scrolling if the current custom content screen doesn't allow 1165 // scrolling. 1166 return; 1167 } 1168 1169 if (theta > MAX_SWIPE_ANGLE) { 1170 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 1171 return; 1172 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 1173 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 1174 // increase the touch slop to make it harder to begin scrolling the workspace. This 1175 // results in vertically scrolling widgets to more easily. The higher the angle, the 1176 // more we increase touch slop. 1177 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 1178 float extraRatio = (float) 1179 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 1180 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 1181 } else { 1182 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 1183 super.determineScrollingStart(ev); 1184 } 1185 } 1186 1187 protected void onPageBeginMoving() { 1188 super.onPageBeginMoving(); 1189 1190 if (isHardwareAccelerated()) { 1191 updateChildrenLayersEnabled(false); 1192 } else { 1193 if (mNextPage != INVALID_PAGE) { 1194 // we're snapping to a particular screen 1195 enableChildrenCache(mCurrentPage, mNextPage); 1196 } else { 1197 // this is when user is actively dragging a particular screen, they might 1198 // swipe it either left or right (but we won't advance by more than one screen) 1199 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 1200 } 1201 } 1202 } 1203 1204 protected void onPageEndMoving() { 1205 super.onPageEndMoving(); 1206 1207 if (isHardwareAccelerated()) { 1208 updateChildrenLayersEnabled(false); 1209 } else { 1210 clearChildrenCache(); 1211 } 1212 1213 if (mDragController.isDragging()) { 1214 if (workspaceInModalState()) { 1215 // If we are in springloaded mode, then force an event to check if the current touch 1216 // is under a new page (to scroll to) 1217 mDragController.forceTouchMove(); 1218 } 1219 } 1220 1221 if (mDelayedResizeRunnable != null) { 1222 mDelayedResizeRunnable.run(); 1223 mDelayedResizeRunnable = null; 1224 } 1225 1226 if (mDelayedSnapToPageRunnable != null) { 1227 mDelayedSnapToPageRunnable.run(); 1228 mDelayedSnapToPageRunnable = null; 1229 } 1230 if (mStripScreensOnPageStopMoving) { 1231 stripEmptyScreens(); 1232 mStripScreensOnPageStopMoving = false; 1233 } 1234 1235 if (mShouldSendPageSettled) { 1236 mLauncherOverlay.onScrollSettled(); 1237 mShouldSendPageSettled = false; 1238 } 1239 } 1240 1241 protected void onScrollInteractionBegin() { 1242 super.onScrollInteractionEnd(); 1243 mScrollInteractionBegan = true; 1244 } 1245 1246 protected void onScrollInteractionEnd() { 1247 super.onScrollInteractionEnd(); 1248 mScrollInteractionBegan = false; 1249 if (mStartedSendingScrollEvents) { 1250 mStartedSendingScrollEvents = false; 1251 mLauncherOverlay.onScrollInteractionEnd(); 1252 } 1253 } 1254 1255 public void setLauncherOverlay(LauncherOverlay overlay) { 1256 mLauncherOverlay = overlay; 1257 } 1258 1259 @Override 1260 protected void overScroll(float amount) { 1261 boolean shouldOverScroll = (amount <= 0 && (!hasCustomContent() || mIsRtl)) || 1262 (amount >= 0 && (!hasCustomContent() || !mIsRtl)); 1263 1264 boolean shouldScrollOverlay = mLauncherOverlay != null && 1265 ((amount <= 0 && !mIsRtl) || (amount >= 0 && mIsRtl)); 1266 1267 boolean shouldZeroOverlay = mLauncherOverlay != null && mLastOverlaySroll != 0 && 1268 ((amount >= 0 && !mIsRtl) || (amount <= 0 && mIsRtl)); 1269 1270 if (shouldScrollOverlay) { 1271 if (!mStartedSendingScrollEvents && mScrollInteractionBegan) { 1272 mStartedSendingScrollEvents = true; 1273 mLauncherOverlay.onScrollInteractionBegin(); 1274 mShouldSendPageSettled = true; 1275 } 1276 int screenSize = getViewportWidth(); 1277 float f = (amount / screenSize); 1278 1279 int progress = (int) Math.abs((f * 100)); 1280 1281 mLastOverlaySroll = progress; 1282 mLauncherOverlay.onScrollChange(progress, mIsRtl); 1283 } else if (shouldOverScroll) { 1284 dampedOverScroll(amount); 1285 } 1286 1287 if (shouldZeroOverlay) { 1288 mLauncherOverlay.onScrollChange(0, mIsRtl); 1289 } 1290 } 1291 1292 @Override 1293 protected void getEdgeVerticalPostion(int[] pos) { 1294 View child = getChildAt(getPageCount() - 1); 1295 pos[0] = child.getTop(); 1296 pos[1] = child.getBottom(); 1297 } 1298 1299 @Override 1300 protected void notifyPageSwitchListener() { 1301 super.notifyPageSwitchListener(); 1302 1303 if (hasCustomContent() && getNextPage() == 0 && !mCustomContentShowing) { 1304 mCustomContentShowing = true; 1305 if (mCustomContentCallbacks != null) { 1306 mCustomContentCallbacks.onShow(false); 1307 mCustomContentShowTime = System.currentTimeMillis(); 1308 } 1309 } else if (hasCustomContent() && getNextPage() != 0 && mCustomContentShowing) { 1310 mCustomContentShowing = false; 1311 if (mCustomContentCallbacks != null) { 1312 mCustomContentCallbacks.onHide(); 1313 } 1314 } 1315 } 1316 1317 protected CustomContentCallbacks getCustomContentCallbacks() { 1318 return mCustomContentCallbacks; 1319 } 1320 1321 protected void setWallpaperDimension() { 1322 new AsyncTask<Void, Void, Void>() { 1323 public Void doInBackground(Void ... args) { 1324 String spKey = LauncherFiles.WALLPAPER_CROP_PREFERENCES_KEY; 1325 SharedPreferences sp = 1326 mLauncher.getSharedPreferences(spKey, Context.MODE_MULTI_PROCESS); 1327 WallpaperUtils.suggestWallpaperDimension(mLauncher.getResources(), 1328 sp, mLauncher.getWindowManager(), mWallpaperManager, 1329 mLauncher.overrideWallpaperDimensions()); 1330 return null; 1331 } 1332 }.executeOnExecutor(Utilities.THREAD_POOL_EXECUTOR); 1333 } 1334 1335 protected void snapToPage(int whichPage, Runnable r) { 1336 snapToPage(whichPage, SLOW_PAGE_SNAP_ANIMATION_DURATION, r); 1337 } 1338 1339 protected void snapToPage(int whichPage, int duration, Runnable r) { 1340 if (mDelayedSnapToPageRunnable != null) { 1341 mDelayedSnapToPageRunnable.run(); 1342 } 1343 mDelayedSnapToPageRunnable = r; 1344 snapToPage(whichPage, duration); 1345 } 1346 1347 public void snapToScreenId(long screenId) { 1348 snapToScreenId(screenId, null); 1349 } 1350 1351 protected void snapToScreenId(long screenId, Runnable r) { 1352 snapToPage(getPageIndexForScreenId(screenId), r); 1353 } 1354 1355 class WallpaperOffsetInterpolator implements Choreographer.FrameCallback { 1356 float mFinalOffset = 0.0f; 1357 float mCurrentOffset = 0.5f; // to force an initial update 1358 boolean mWaitingForUpdate; 1359 Choreographer mChoreographer; 1360 Interpolator mInterpolator; 1361 boolean mAnimating; 1362 long mAnimationStartTime; 1363 float mAnimationStartOffset; 1364 private final int ANIMATION_DURATION = 250; 1365 // Don't use all the wallpaper for parallax until you have at least this many pages 1366 private final int MIN_PARALLAX_PAGE_SPAN = 3; 1367 int mNumScreens; 1368 1369 public WallpaperOffsetInterpolator() { 1370 mChoreographer = Choreographer.getInstance(); 1371 mInterpolator = new DecelerateInterpolator(1.5f); 1372 } 1373 1374 @Override 1375 public void doFrame(long frameTimeNanos) { 1376 updateOffset(false); 1377 } 1378 1379 private void updateOffset(boolean force) { 1380 if (mWaitingForUpdate || force) { 1381 mWaitingForUpdate = false; 1382 if (computeScrollOffset() && mWindowToken != null) { 1383 try { 1384 mWallpaperManager.setWallpaperOffsets(mWindowToken, 1385 mWallpaperOffset.getCurrX(), 0.5f); 1386 setWallpaperOffsetSteps(); 1387 } catch (IllegalArgumentException e) { 1388 Log.e(TAG, "Error updating wallpaper offset: " + e); 1389 } 1390 } 1391 } 1392 } 1393 1394 public boolean computeScrollOffset() { 1395 final float oldOffset = mCurrentOffset; 1396 if (mAnimating) { 1397 long durationSinceAnimation = System.currentTimeMillis() - mAnimationStartTime; 1398 float t0 = durationSinceAnimation / (float) ANIMATION_DURATION; 1399 float t1 = mInterpolator.getInterpolation(t0); 1400 mCurrentOffset = mAnimationStartOffset + 1401 (mFinalOffset - mAnimationStartOffset) * t1; 1402 mAnimating = durationSinceAnimation < ANIMATION_DURATION; 1403 } else { 1404 mCurrentOffset = mFinalOffset; 1405 } 1406 1407 if (Math.abs(mCurrentOffset - mFinalOffset) > 0.0000001f) { 1408 scheduleUpdate(); 1409 } 1410 if (Math.abs(oldOffset - mCurrentOffset) > 0.0000001f) { 1411 return true; 1412 } 1413 return false; 1414 } 1415 1416 public float wallpaperOffsetForScroll(int scroll) { 1417 // TODO: do different behavior if it's a live wallpaper? 1418 // Don't use up all the wallpaper parallax until you have at least 1419 // MIN_PARALLAX_PAGE_SPAN pages 1420 int numScrollingPages = getNumScreensExcludingEmptyAndCustom(); 1421 int parallaxPageSpan; 1422 if (mWallpaperIsLiveWallpaper) { 1423 parallaxPageSpan = numScrollingPages - 1; 1424 } else { 1425 parallaxPageSpan = Math.max(MIN_PARALLAX_PAGE_SPAN, numScrollingPages - 1); 1426 } 1427 mNumPagesForWallpaperParallax = parallaxPageSpan; 1428 1429 if (getChildCount() <= 1) { 1430 if (mIsRtl) { 1431 return 1 - 1.0f/mNumPagesForWallpaperParallax; 1432 } 1433 return 0; 1434 } 1435 1436 // Exclude the leftmost page 1437 int emptyExtraPages = numEmptyScreensToIgnore(); 1438 int firstIndex = numCustomPages(); 1439 // Exclude the last extra empty screen (if we have > MIN_PARALLAX_PAGE_SPAN pages) 1440 int lastIndex = getChildCount() - 1 - emptyExtraPages; 1441 if (mIsRtl) { 1442 int temp = firstIndex; 1443 firstIndex = lastIndex; 1444 lastIndex = temp; 1445 } 1446 1447 int firstPageScrollX = getScrollForPage(firstIndex); 1448 int scrollRange = getScrollForPage(lastIndex) - firstPageScrollX; 1449 if (scrollRange == 0) { 1450 return 0; 1451 } else { 1452 // Sometimes the left parameter of the pages is animated during a layout transition; 1453 // this parameter offsets it to keep the wallpaper from animating as well 1454 int adjustedScroll = 1455 scroll - firstPageScrollX - getLayoutTransitionOffsetForPage(0); 1456 float offset = Math.min(1, adjustedScroll / (float) scrollRange); 1457 offset = Math.max(0, offset); 1458 1459 // On RTL devices, push the wallpaper offset to the right if we don't have enough 1460 // pages (ie if numScrollingPages < MIN_PARALLAX_PAGE_SPAN) 1461 if (!mWallpaperIsLiveWallpaper && numScrollingPages < MIN_PARALLAX_PAGE_SPAN 1462 && mIsRtl) { 1463 return offset * (parallaxPageSpan - numScrollingPages + 1) / parallaxPageSpan; 1464 } 1465 return offset * (numScrollingPages - 1) / parallaxPageSpan; 1466 } 1467 } 1468 1469 private float wallpaperOffsetForCurrentScroll() { 1470 return wallpaperOffsetForScroll(getScrollX()); 1471 } 1472 1473 private int numEmptyScreensToIgnore() { 1474 int numScrollingPages = getChildCount() - numCustomPages(); 1475 if (numScrollingPages >= MIN_PARALLAX_PAGE_SPAN && hasExtraEmptyScreen()) { 1476 return 1; 1477 } else { 1478 return 0; 1479 } 1480 } 1481 1482 private int getNumScreensExcludingEmptyAndCustom() { 1483 int numScrollingPages = getChildCount() - numEmptyScreensToIgnore() - numCustomPages(); 1484 return numScrollingPages; 1485 } 1486 1487 public void syncWithScroll() { 1488 float offset = wallpaperOffsetForCurrentScroll(); 1489 mWallpaperOffset.setFinalX(offset); 1490 updateOffset(true); 1491 } 1492 1493 public float getCurrX() { 1494 return mCurrentOffset; 1495 } 1496 1497 public float getFinalX() { 1498 return mFinalOffset; 1499 } 1500 1501 private void animateToFinal() { 1502 mAnimating = true; 1503 mAnimationStartOffset = mCurrentOffset; 1504 mAnimationStartTime = System.currentTimeMillis(); 1505 } 1506 1507 private void setWallpaperOffsetSteps() { 1508 // Set wallpaper offset steps (1 / (number of screens - 1)) 1509 float xOffset = 1.0f / mNumPagesForWallpaperParallax; 1510 if (xOffset != mLastSetWallpaperOffsetSteps) { 1511 mWallpaperManager.setWallpaperOffsetSteps(xOffset, 1.0f); 1512 mLastSetWallpaperOffsetSteps = xOffset; 1513 } 1514 } 1515 1516 public void setFinalX(float x) { 1517 scheduleUpdate(); 1518 mFinalOffset = Math.max(0f, Math.min(x, 1.0f)); 1519 if (getNumScreensExcludingEmptyAndCustom() != mNumScreens) { 1520 if (mNumScreens > 0) { 1521 // Don't animate if we're going from 0 screens 1522 animateToFinal(); 1523 } 1524 mNumScreens = getNumScreensExcludingEmptyAndCustom(); 1525 } 1526 } 1527 1528 private void scheduleUpdate() { 1529 if (!mWaitingForUpdate) { 1530 mChoreographer.postFrameCallback(this); 1531 mWaitingForUpdate = true; 1532 } 1533 } 1534 1535 public void jumpToFinal() { 1536 mCurrentOffset = mFinalOffset; 1537 } 1538 } 1539 1540 @Override 1541 public void computeScroll() { 1542 super.computeScroll(); 1543 mWallpaperOffset.syncWithScroll(); 1544 } 1545 1546 @Override 1547 public void announceForAccessibility(CharSequence text) { 1548 // Don't announce if apps is on top of us. 1549 if (!mLauncher.isAppsViewVisible()) { 1550 super.announceForAccessibility(text); 1551 } 1552 } 1553 1554 public void showOutlinesTemporarily() { 1555 if (!mIsPageMoving && !isTouchActive()) { 1556 snapToPage(mCurrentPage); 1557 } 1558 } 1559 1560 float backgroundAlphaInterpolator(float r) { 1561 float pivotA = 0.1f; 1562 float pivotB = 0.4f; 1563 if (r < pivotA) { 1564 return 0; 1565 } else if (r > pivotB) { 1566 return 1.0f; 1567 } else { 1568 return (r - pivotA)/(pivotB - pivotA); 1569 } 1570 } 1571 1572 private void updatePageAlphaValues(int screenCenter) { 1573 if (mWorkspaceFadeInAdjacentScreens && 1574 !workspaceInModalState() && 1575 !mIsSwitchingState) { 1576 for (int i = numCustomPages(); i < getChildCount(); i++) { 1577 CellLayout child = (CellLayout) getChildAt(i); 1578 if (child != null) { 1579 float scrollProgress = getScrollProgress(screenCenter, child, i); 1580 float alpha = 1 - Math.abs(scrollProgress); 1581 child.getShortcutsAndWidgets().setAlpha(alpha); 1582 } 1583 } 1584 } 1585 } 1586 1587 @TargetApi(Build.VERSION_CODES.LOLLIPOP) 1588 @Override 1589 public void enableAccessibleDrag(boolean enable) { 1590 for (int i = 0; i < getChildCount(); i++) { 1591 CellLayout child = (CellLayout) getChildAt(i); 1592 child.enableAccessibleDrag(enable, CellLayout.WORKSPACE_ACCESSIBILITY_DRAG); 1593 } 1594 1595 if (enable) { 1596 // We need to allow our individual children to become click handlers in this case 1597 setOnClickListener(null); 1598 } else { 1599 // Reset our click listener 1600 setOnClickListener(mLauncher); 1601 } 1602 mLauncher.getSearchDropTargetBar().enableAccessibleDrag(enable); 1603 mLauncher.getHotseat().getLayout() 1604 .enableAccessibleDrag(enable, CellLayout.WORKSPACE_ACCESSIBILITY_DRAG); 1605 } 1606 1607 public boolean hasCustomContent() { 1608 return (mScreenOrder.size() > 0 && mScreenOrder.get(0) == CUSTOM_CONTENT_SCREEN_ID); 1609 } 1610 1611 public int numCustomPages() { 1612 return hasCustomContent() ? 1 : 0; 1613 } 1614 1615 public boolean isOnOrMovingToCustomContent() { 1616 return hasCustomContent() && getNextPage() == 0 && mRestorePage == INVALID_RESTORE_PAGE; 1617 } 1618 1619 private void updateStateForCustomContent(int screenCenter) { 1620 float translationX = 0; 1621 float progress = 0; 1622 if (hasCustomContent()) { 1623 int index = mScreenOrder.indexOf(CUSTOM_CONTENT_SCREEN_ID); 1624 1625 int scrollDelta = getScrollX() - getScrollForPage(index) - 1626 getLayoutTransitionOffsetForPage(index); 1627 float scrollRange = getScrollForPage(index + 1) - getScrollForPage(index); 1628 translationX = scrollRange - scrollDelta; 1629 progress = (scrollRange - scrollDelta) / scrollRange; 1630 1631 if (mIsRtl) { 1632 translationX = Math.min(0, translationX); 1633 } else { 1634 translationX = Math.max(0, translationX); 1635 } 1636 progress = Math.max(0, progress); 1637 } 1638 1639 if (Float.compare(progress, mLastCustomContentScrollProgress) == 0) return; 1640 1641 CellLayout cc = mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID); 1642 if (progress > 0 && cc.getVisibility() != VISIBLE && !workspaceInModalState()) { 1643 cc.setVisibility(VISIBLE); 1644 } 1645 1646 mLastCustomContentScrollProgress = progress; 1647 1648 // We should only update the drag layer background alpha if we are not in all apps or the 1649 // widgets tray 1650 if (mState == State.NORMAL) { 1651 mLauncher.getDragLayer().setBackgroundAlpha(progress == 1 ? 0 : progress * 0.8f); 1652 } 1653 1654 if (mLauncher.getHotseat() != null) { 1655 mLauncher.getHotseat().setTranslationX(translationX); 1656 } 1657 1658 if (getPageIndicator() != null) { 1659 getPageIndicator().setTranslationX(translationX); 1660 } 1661 1662 if (mCustomContentCallbacks != null) { 1663 mCustomContentCallbacks.onScrollProgressChanged(progress); 1664 } 1665 } 1666 1667 @Override 1668 protected OnClickListener getPageIndicatorClickListener() { 1669 AccessibilityManager am = (AccessibilityManager) 1670 getContext().getSystemService(Context.ACCESSIBILITY_SERVICE); 1671 if (!am.isTouchExplorationEnabled()) { 1672 return null; 1673 } 1674 OnClickListener listener = new OnClickListener() { 1675 @Override 1676 public void onClick(View arg0) { 1677 mLauncher.showOverviewMode(true); 1678 } 1679 }; 1680 return listener; 1681 } 1682 1683 @Override 1684 protected void screenScrolled(int screenCenter) { 1685 updatePageAlphaValues(screenCenter); 1686 updateStateForCustomContent(screenCenter); 1687 enableHwLayersOnVisiblePages(); 1688 } 1689 1690 protected void onAttachedToWindow() { 1691 super.onAttachedToWindow(); 1692 mWindowToken = getWindowToken(); 1693 computeScroll(); 1694 mDragController.setWindowToken(mWindowToken); 1695 } 1696 1697 protected void onDetachedFromWindow() { 1698 super.onDetachedFromWindow(); 1699 mWindowToken = null; 1700 } 1701 1702 protected void onResume() { 1703 if (getPageIndicator() != null) { 1704 // In case accessibility state has changed, we need to perform this on every 1705 // attach to window 1706 OnClickListener listener = getPageIndicatorClickListener(); 1707 if (listener != null) { 1708 getPageIndicator().setOnClickListener(listener); 1709 } 1710 } 1711 1712 // Update wallpaper dimensions if they were changed since last onResume 1713 // (we also always set the wallpaper dimensions in the constructor) 1714 if (LauncherAppState.getInstance().hasWallpaperChangedSinceLastCheck()) { 1715 setWallpaperDimension(); 1716 } 1717 mWallpaperIsLiveWallpaper = mWallpaperManager.getWallpaperInfo() != null; 1718 // Force the wallpaper offset steps to be set again, because another app might have changed 1719 // them 1720 mLastSetWallpaperOffsetSteps = 0f; 1721 } 1722 1723 @Override 1724 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1725 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1726 mWallpaperOffset.syncWithScroll(); 1727 mWallpaperOffset.jumpToFinal(); 1728 } 1729 super.onLayout(changed, left, top, right, bottom); 1730 } 1731 1732 @Override 1733 protected void onDraw(Canvas canvas) { 1734 super.onDraw(canvas); 1735 1736 // Call back to LauncherModel to finish binding after the first draw 1737 post(mBindPages); 1738 } 1739 1740 @Override 1741 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1742 if (!mLauncher.isAppsViewVisible()) { 1743 final Folder openFolder = getOpenFolder(); 1744 if (openFolder != null) { 1745 return openFolder.requestFocus(direction, previouslyFocusedRect); 1746 } else { 1747 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1748 } 1749 } 1750 return false; 1751 } 1752 1753 @Override 1754 public int getDescendantFocusability() { 1755 if (workspaceInModalState()) { 1756 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1757 } 1758 return super.getDescendantFocusability(); 1759 } 1760 1761 @Override 1762 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1763 if (!mLauncher.isAppsViewVisible()) { 1764 final Folder openFolder = getOpenFolder(); 1765 if (openFolder != null) { 1766 openFolder.addFocusables(views, direction); 1767 } else { 1768 super.addFocusables(views, direction, focusableMode); 1769 } 1770 } 1771 } 1772 1773 public boolean workspaceInModalState() { 1774 return mState != State.NORMAL; 1775 } 1776 1777 void enableChildrenCache(int fromPage, int toPage) { 1778 if (fromPage > toPage) { 1779 final int temp = fromPage; 1780 fromPage = toPage; 1781 toPage = temp; 1782 } 1783 1784 final int screenCount = getChildCount(); 1785 1786 fromPage = Math.max(fromPage, 0); 1787 toPage = Math.min(toPage, screenCount - 1); 1788 1789 for (int i = fromPage; i <= toPage; i++) { 1790 final CellLayout layout = (CellLayout) getChildAt(i); 1791 layout.setChildrenDrawnWithCacheEnabled(true); 1792 layout.setChildrenDrawingCacheEnabled(true); 1793 } 1794 } 1795 1796 void clearChildrenCache() { 1797 final int screenCount = getChildCount(); 1798 for (int i = 0; i < screenCount; i++) { 1799 final CellLayout layout = (CellLayout) getChildAt(i); 1800 layout.setChildrenDrawnWithCacheEnabled(false); 1801 // In software mode, we don't want the items to continue to be drawn into bitmaps 1802 if (!isHardwareAccelerated()) { 1803 layout.setChildrenDrawingCacheEnabled(false); 1804 } 1805 } 1806 } 1807 1808 @Thunk void updateChildrenLayersEnabled(boolean force) { 1809 boolean small = mState == State.OVERVIEW || mIsSwitchingState; 1810 boolean enableChildrenLayers = force || small || mAnimatingViewIntoPlace || isPageMoving(); 1811 1812 if (enableChildrenLayers != mChildrenLayersEnabled) { 1813 mChildrenLayersEnabled = enableChildrenLayers; 1814 if (mChildrenLayersEnabled) { 1815 enableHwLayersOnVisiblePages(); 1816 } else { 1817 for (int i = 0; i < getPageCount(); i++) { 1818 final CellLayout cl = (CellLayout) getChildAt(i); 1819 cl.enableHardwareLayer(false); 1820 } 1821 } 1822 } 1823 } 1824 1825 private void enableHwLayersOnVisiblePages() { 1826 if (mChildrenLayersEnabled) { 1827 final int screenCount = getChildCount(); 1828 getVisiblePages(mTempVisiblePagesRange); 1829 int leftScreen = mTempVisiblePagesRange[0]; 1830 int rightScreen = mTempVisiblePagesRange[1]; 1831 if (leftScreen == rightScreen) { 1832 // make sure we're caching at least two pages always 1833 if (rightScreen < screenCount - 1) { 1834 rightScreen++; 1835 } else if (leftScreen > 0) { 1836 leftScreen--; 1837 } 1838 } 1839 1840 final CellLayout customScreen = mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID); 1841 for (int i = 0; i < screenCount; i++) { 1842 final CellLayout layout = (CellLayout) getPageAt(i); 1843 1844 // enable layers between left and right screen inclusive, except for the 1845 // customScreen, which may animate its content during transitions. 1846 boolean enableLayer = layout != customScreen && 1847 leftScreen <= i && i <= rightScreen && shouldDrawChild(layout); 1848 layout.enableHardwareLayer(enableLayer); 1849 } 1850 } 1851 } 1852 1853 public void buildPageHardwareLayers() { 1854 // force layers to be enabled just for the call to buildLayer 1855 updateChildrenLayersEnabled(true); 1856 if (getWindowToken() != null) { 1857 final int childCount = getChildCount(); 1858 for (int i = 0; i < childCount; i++) { 1859 CellLayout cl = (CellLayout) getChildAt(i); 1860 cl.buildHardwareLayer(); 1861 } 1862 } 1863 updateChildrenLayersEnabled(false); 1864 } 1865 1866 protected void onWallpaperTap(MotionEvent ev) { 1867 final int[] position = mTempCell; 1868 getLocationOnScreen(position); 1869 1870 int pointerIndex = ev.getActionIndex(); 1871 position[0] += (int) ev.getX(pointerIndex); 1872 position[1] += (int) ev.getY(pointerIndex); 1873 1874 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1875 ev.getAction() == MotionEvent.ACTION_UP 1876 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1877 position[0], position[1], 0, null); 1878 } 1879 1880 /* 1881 * 1882 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1883 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1884 * 1885 * These methods mark the appropriate pages as accepting drops (which alters their visual 1886 * appearance). 1887 * 1888 */ 1889 private static Rect getDrawableBounds(Drawable d) { 1890 Rect bounds = new Rect(); 1891 d.copyBounds(bounds); 1892 if (bounds.width() == 0 || bounds.height() == 0) { 1893 bounds.set(0, 0, d.getIntrinsicWidth(), d.getIntrinsicHeight()); 1894 } else { 1895 bounds.offsetTo(0, 0); 1896 } 1897 if (d instanceof PreloadIconDrawable) { 1898 int inset = -((PreloadIconDrawable) d).getOutset(); 1899 bounds.inset(inset, inset); 1900 } 1901 return bounds; 1902 } 1903 1904 public void onExternalDragStartedWithItem(View v) { 1905 // Compose a drag bitmap with the view scaled to the icon size 1906 DeviceProfile grid = mLauncher.getDeviceProfile(); 1907 int iconSize = grid.iconSizePx; 1908 int bmpWidth = v.getMeasuredWidth(); 1909 int bmpHeight = v.getMeasuredHeight(); 1910 1911 // If this is a text view, use its drawable instead 1912 if (v instanceof TextView) { 1913 Drawable d = getTextViewIcon((TextView) v); 1914 Rect bounds = getDrawableBounds(d); 1915 bmpWidth = bounds.width(); 1916 bmpHeight = bounds.height(); 1917 } 1918 1919 // Compose the bitmap to create the icon from 1920 Bitmap b = Bitmap.createBitmap(bmpWidth, bmpHeight, 1921 Bitmap.Config.ARGB_8888); 1922 mCanvas.setBitmap(b); 1923 drawDragView(v, mCanvas, 0); 1924 mCanvas.setBitmap(null); 1925 1926 // The outline is used to visualize where the item will land if dropped 1927 mDragOutline = createDragOutline(b, DRAG_BITMAP_PADDING, iconSize, iconSize, true); 1928 } 1929 1930 public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, boolean clipAlpha) { 1931 int[] size = estimateItemSize(info, false); 1932 1933 // The outline is used to visualize where the item will land if dropped 1934 mDragOutline = createDragOutline(b, DRAG_BITMAP_PADDING, size[0], size[1], clipAlpha); 1935 } 1936 1937 public void exitWidgetResizeMode() { 1938 DragLayer dragLayer = mLauncher.getDragLayer(); 1939 dragLayer.clearAllResizeFrames(); 1940 } 1941 1942 @Override 1943 protected void getFreeScrollPageRange(int[] range) { 1944 getOverviewModePages(range); 1945 } 1946 1947 private void getOverviewModePages(int[] range) { 1948 int start = numCustomPages(); 1949 int end = getChildCount() - 1; 1950 1951 range[0] = Math.max(0, Math.min(start, getChildCount() - 1)); 1952 range[1] = Math.max(0, end); 1953 } 1954 1955 public void onStartReordering() { 1956 super.onStartReordering(); 1957 // Reordering handles its own animations, disable the automatic ones. 1958 disableLayoutTransitions(); 1959 } 1960 1961 public void onEndReordering() { 1962 super.onEndReordering(); 1963 1964 if (mLauncher.isWorkspaceLoading()) { 1965 // Invalid and dangerous operation if workspace is loading 1966 return; 1967 } 1968 1969 mScreenOrder.clear(); 1970 int count = getChildCount(); 1971 for (int i = 0; i < count; i++) { 1972 CellLayout cl = ((CellLayout) getChildAt(i)); 1973 mScreenOrder.add(getIdForScreen(cl)); 1974 } 1975 1976 mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); 1977 1978 // Re-enable auto layout transitions for page deletion. 1979 enableLayoutTransitions(); 1980 } 1981 1982 public boolean isInOverviewMode() { 1983 return mState == State.OVERVIEW; 1984 } 1985 1986 int getOverviewModeTranslationY() { 1987 DeviceProfile grid = mLauncher.getDeviceProfile(); 1988 Rect workspacePadding = grid.getWorkspacePadding(Utilities.isRtl(getResources())); 1989 int overviewButtonBarHeight = grid.getOverviewModeButtonBarHeight(); 1990 1991 int scaledHeight = (int) (mOverviewModeShrinkFactor * getNormalChildHeight()); 1992 int workspaceTop = mInsets.top + workspacePadding.top; 1993 int workspaceBottom = getViewportHeight() - mInsets.bottom - workspacePadding.bottom; 1994 int overviewTop = mInsets.top; 1995 int overviewBottom = getViewportHeight() - mInsets.bottom - overviewButtonBarHeight; 1996 int workspaceOffsetTopEdge = workspaceTop + ((workspaceBottom - workspaceTop) - scaledHeight) / 2; 1997 int overviewOffsetTopEdge = overviewTop + (overviewBottom - overviewTop - scaledHeight) / 2; 1998 return -workspaceOffsetTopEdge + overviewOffsetTopEdge; 1999 } 2000 2001 /** 2002 * Sets the current workspace {@link State}, returning an animation transitioning the workspace 2003 * to that new state. 2004 */ 2005 public Animator setStateWithAnimation(State toState, int toPage, boolean animated, 2006 HashMap<View, Integer> layerViews) { 2007 // Create the animation to the new state 2008 Animator workspaceAnim = mStateTransitionAnimation.getAnimationToState(mState, 2009 toState, toPage, animated, layerViews); 2010 2011 // Update the current state 2012 mState = toState; 2013 updateAccessibilityFlags(); 2014 2015 return workspaceAnim; 2016 } 2017 2018 State getState() { 2019 return mState; 2020 } 2021 2022 public void updateAccessibilityFlags() { 2023 if (Utilities.ATLEAST_LOLLIPOP) { 2024 int total = getPageCount(); 2025 for (int i = numCustomPages(); i < total; i++) { 2026 updateAccessibilityFlags((CellLayout) getPageAt(i), i); 2027 } 2028 setImportantForAccessibility((mState == State.NORMAL || mState == State.OVERVIEW) 2029 ? IMPORTANT_FOR_ACCESSIBILITY_AUTO 2030 : IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS); 2031 } else { 2032 int accessible = mState == State.NORMAL ? 2033 IMPORTANT_FOR_ACCESSIBILITY_AUTO : 2034 IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS; 2035 setImportantForAccessibility(accessible); 2036 } 2037 } 2038 2039 private void updateAccessibilityFlags(CellLayout page, int pageNo) { 2040 if (mState == State.OVERVIEW) { 2041 page.setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_YES); 2042 page.getShortcutsAndWidgets().setImportantForAccessibility( 2043 IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS); 2044 page.setContentDescription(getPageDescription(pageNo)); 2045 2046 if (mPagesAccessibilityDelegate == null) { 2047 mPagesAccessibilityDelegate = new OverviewScreenAccessibilityDelegate(this); 2048 } 2049 page.setAccessibilityDelegate(mPagesAccessibilityDelegate); 2050 } else { 2051 int accessible = mState == State.NORMAL ? 2052 IMPORTANT_FOR_ACCESSIBILITY_AUTO : 2053 IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS; 2054 page.setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_NO); 2055 page.getShortcutsAndWidgets().setImportantForAccessibility(accessible); 2056 page.setContentDescription(null); 2057 page.setAccessibilityDelegate(null); 2058 } 2059 } 2060 2061 @Override 2062 public void onLauncherTransitionPrepare(Launcher l, boolean animated, boolean toWorkspace) { 2063 mIsSwitchingState = true; 2064 2065 // Invalidate here to ensure that the pages are rendered during the state change transition. 2066 invalidate(); 2067 2068 updateChildrenLayersEnabled(false); 2069 hideCustomContentIfNecessary(); 2070 } 2071 2072 @Override 2073 public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) { 2074 } 2075 2076 @Override 2077 public void onLauncherTransitionStep(Launcher l, float t) { 2078 mTransitionProgress = t; 2079 } 2080 2081 @Override 2082 public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) { 2083 mIsSwitchingState = false; 2084 updateChildrenLayersEnabled(false); 2085 showCustomContentIfNecessary(); 2086 } 2087 2088 void updateCustomContentVisibility() { 2089 int visibility = mState == Workspace.State.NORMAL ? VISIBLE : INVISIBLE; 2090 if (hasCustomContent()) { 2091 mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID).setVisibility(visibility); 2092 } 2093 } 2094 2095 void showCustomContentIfNecessary() { 2096 boolean show = mState == Workspace.State.NORMAL; 2097 if (show && hasCustomContent()) { 2098 mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID).setVisibility(VISIBLE); 2099 } 2100 } 2101 2102 void hideCustomContentIfNecessary() { 2103 boolean hide = mState != Workspace.State.NORMAL; 2104 if (hide && hasCustomContent()) { 2105 disableLayoutTransitions(); 2106 mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID).setVisibility(INVISIBLE); 2107 enableLayoutTransitions(); 2108 } 2109 } 2110 2111 /** 2112 * Returns the drawable for the given text view. 2113 */ 2114 public static Drawable getTextViewIcon(TextView tv) { 2115 final Drawable[] drawables = tv.getCompoundDrawables(); 2116 for (int i = 0; i < drawables.length; i++) { 2117 if (drawables[i] != null) { 2118 return drawables[i]; 2119 } 2120 } 2121 return null; 2122 } 2123 2124 /** 2125 * Draw the View v into the given Canvas. 2126 * 2127 * @param v the view to draw 2128 * @param destCanvas the canvas to draw on 2129 * @param padding the horizontal and vertical padding to use when drawing 2130 */ 2131 private static void drawDragView(View v, Canvas destCanvas, int padding) { 2132 final Rect clipRect = sTempRect; 2133 v.getDrawingRect(clipRect); 2134 2135 boolean textVisible = false; 2136 2137 destCanvas.save(); 2138 if (v instanceof TextView) { 2139 Drawable d = getTextViewIcon((TextView) v); 2140 Rect bounds = getDrawableBounds(d); 2141 clipRect.set(0, 0, bounds.width() + padding, bounds.height() + padding); 2142 destCanvas.translate(padding / 2 - bounds.left, padding / 2 - bounds.top); 2143 d.draw(destCanvas); 2144 } else { 2145 if (v instanceof FolderIcon) { 2146 // For FolderIcons the text can bleed into the icon area, and so we need to 2147 // hide the text completely (which can't be achieved by clipping). 2148 if (((FolderIcon) v).getTextVisible()) { 2149 ((FolderIcon) v).setTextVisible(false); 2150 textVisible = true; 2151 } 2152 } 2153 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 2154 destCanvas.clipRect(clipRect, Op.REPLACE); 2155 v.draw(destCanvas); 2156 2157 // Restore text visibility of FolderIcon if necessary 2158 if (textVisible) { 2159 ((FolderIcon) v).setTextVisible(true); 2160 } 2161 } 2162 destCanvas.restore(); 2163 } 2164 2165 /** 2166 * Returns a new bitmap to show when the given View is being dragged around. 2167 * Responsibility for the bitmap is transferred to the caller. 2168 * @param expectedPadding padding to add to the drag view. If a different padding was used 2169 * its value will be changed 2170 */ 2171 public Bitmap createDragBitmap(View v, AtomicInteger expectedPadding) { 2172 Bitmap b; 2173 2174 int padding = expectedPadding.get(); 2175 if (v instanceof TextView) { 2176 Drawable d = getTextViewIcon((TextView) v); 2177 Rect bounds = getDrawableBounds(d); 2178 b = Bitmap.createBitmap(bounds.width() + padding, 2179 bounds.height() + padding, Bitmap.Config.ARGB_8888); 2180 expectedPadding.set(padding - bounds.left - bounds.top); 2181 } else { 2182 b = Bitmap.createBitmap( 2183 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 2184 } 2185 2186 mCanvas.setBitmap(b); 2187 drawDragView(v, mCanvas, padding); 2188 mCanvas.setBitmap(null); 2189 2190 return b; 2191 } 2192 2193 /** 2194 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2195 * Responsibility for the bitmap is transferred to the caller. 2196 */ 2197 private Bitmap createDragOutline(View v, int padding) { 2198 final int outlineColor = getResources().getColor(R.color.outline_color); 2199 final Bitmap b = Bitmap.createBitmap( 2200 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 2201 2202 mCanvas.setBitmap(b); 2203 drawDragView(v, mCanvas, padding); 2204 mOutlineHelper.applyExpensiveOutlineWithBlur(b, mCanvas, outlineColor, outlineColor); 2205 mCanvas.setBitmap(null); 2206 return b; 2207 } 2208 2209 /** 2210 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2211 * Responsibility for the bitmap is transferred to the caller. 2212 */ 2213 private Bitmap createDragOutline(Bitmap orig, int padding, int w, int h, 2214 boolean clipAlpha) { 2215 final int outlineColor = getResources().getColor(R.color.outline_color); 2216 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 2217 mCanvas.setBitmap(b); 2218 2219 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 2220 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 2221 (h - padding) / (float) orig.getHeight()); 2222 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 2223 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 2224 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 2225 2226 // center the image 2227 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 2228 2229 mCanvas.drawBitmap(orig, src, dst, null); 2230 mOutlineHelper.applyExpensiveOutlineWithBlur(b, mCanvas, outlineColor, outlineColor, 2231 clipAlpha); 2232 mCanvas.setBitmap(null); 2233 2234 return b; 2235 } 2236 2237 public void startDrag(CellLayout.CellInfo cellInfo) { 2238 startDrag(cellInfo, false); 2239 } 2240 2241 @Override 2242 public void startDrag(CellLayout.CellInfo cellInfo, boolean accessible) { 2243 View child = cellInfo.cell; 2244 2245 // Make sure the drag was started by a long press as opposed to a long click. 2246 if (!child.isInTouchMode()) { 2247 return; 2248 } 2249 2250 mDragInfo = cellInfo; 2251 child.setVisibility(INVISIBLE); 2252 CellLayout layout = (CellLayout) child.getParent().getParent(); 2253 layout.prepareChildForDrag(child); 2254 2255 beginDragShared(child, this, accessible); 2256 } 2257 2258 public void beginDragShared(View child, DragSource source, boolean accessible) { 2259 beginDragShared(child, new Point(), source, accessible); 2260 } 2261 2262 public void beginDragShared(View child, Point relativeTouchPos, DragSource source, 2263 boolean accessible) { 2264 child.clearFocus(); 2265 child.setPressed(false); 2266 2267 // The outline is used to visualize where the item will land if dropped 2268 mDragOutline = createDragOutline(child, DRAG_BITMAP_PADDING); 2269 2270 mLauncher.onDragStarted(child); 2271 // The drag bitmap follows the touch point around on the screen 2272 AtomicInteger padding = new AtomicInteger(DRAG_BITMAP_PADDING); 2273 final Bitmap b = createDragBitmap(child, padding); 2274 2275 final int bmpWidth = b.getWidth(); 2276 final int bmpHeight = b.getHeight(); 2277 2278 float scale = mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 2279 int dragLayerX = Math.round(mTempXY[0] - (bmpWidth - scale * child.getWidth()) / 2); 2280 int dragLayerY = Math.round(mTempXY[1] - (bmpHeight - scale * bmpHeight) / 2 2281 - padding.get() / 2); 2282 2283 DeviceProfile grid = mLauncher.getDeviceProfile(); 2284 Point dragVisualizeOffset = null; 2285 Rect dragRect = null; 2286 if (child instanceof BubbleTextView) { 2287 BubbleTextView icon = (BubbleTextView) child; 2288 int iconSize = grid.iconSizePx; 2289 int top = child.getPaddingTop(); 2290 int left = (bmpWidth - iconSize) / 2; 2291 int right = left + iconSize; 2292 int bottom = top + iconSize; 2293 if (icon.isLayoutHorizontal()) { 2294 // If the layout is horizontal, then if we are just picking up the icon, then just 2295 // use the child position since the icon is top-left aligned. Otherwise, offset 2296 // the drag layer position horizontally so that the icon is under the current 2297 // touch position. 2298 if (icon.getIcon().getBounds().contains(relativeTouchPos.x, relativeTouchPos.y)) { 2299 dragLayerX = Math.round(mTempXY[0]); 2300 } else { 2301 dragLayerX = Math.round(mTempXY[0] + relativeTouchPos.x - (bmpWidth / 2)); 2302 } 2303 } 2304 dragLayerY += top; 2305 // Note: The drag region is used to calculate drag layer offsets, but the 2306 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 2307 dragVisualizeOffset = new Point(-padding.get() / 2, padding.get() / 2); 2308 dragRect = new Rect(left, top, right, bottom); 2309 } else if (child instanceof FolderIcon) { 2310 int previewSize = grid.folderIconSizePx; 2311 dragVisualizeOffset = new Point(-padding.get() / 2, 2312 padding.get() / 2 - child.getPaddingTop()); 2313 dragRect = new Rect(0, child.getPaddingTop(), child.getWidth(), previewSize); 2314 } 2315 2316 // Clear the pressed state if necessary 2317 if (child instanceof BubbleTextView) { 2318 BubbleTextView icon = (BubbleTextView) child; 2319 icon.clearPressedBackground(); 2320 } 2321 2322 if (child.getTag() == null || !(child.getTag() instanceof ItemInfo)) { 2323 String msg = "Drag started with a view that has no tag set. This " 2324 + "will cause a crash (issue 11627249) down the line. " 2325 + "View: " + child + " tag: " + child.getTag(); 2326 throw new IllegalStateException(msg); 2327 } 2328 2329 if (child.getParent() instanceof ShortcutAndWidgetContainer) { 2330 mDragSourceInternal = (ShortcutAndWidgetContainer) child.getParent(); 2331 } 2332 2333 DragView dv = mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 2334 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect, scale, accessible); 2335 dv.setIntrinsicIconScaleFactor(source.getIntrinsicIconScaleFactor()); 2336 2337 b.recycle(); 2338 } 2339 2340 public void beginExternalDragShared(View child, DragSource source) { 2341 DeviceProfile grid = mLauncher.getDeviceProfile(); 2342 int iconSize = grid.iconSizePx; 2343 2344 // Notify launcher of drag start 2345 mLauncher.onDragStarted(child); 2346 2347 // Compose a new drag bitmap that is of the icon size 2348 AtomicInteger padding = new AtomicInteger(DRAG_BITMAP_PADDING); 2349 final Bitmap tmpB = createDragBitmap(child, padding); 2350 Bitmap b = Bitmap.createBitmap(iconSize, iconSize, Bitmap.Config.ARGB_8888); 2351 Paint p = new Paint(); 2352 p.setFilterBitmap(true); 2353 mCanvas.setBitmap(b); 2354 mCanvas.drawBitmap(tmpB, new Rect(0, 0, tmpB.getWidth(), tmpB.getHeight()), 2355 new Rect(0, 0, iconSize, iconSize), p); 2356 mCanvas.setBitmap(null); 2357 2358 // Find the child's location on the screen 2359 int bmpWidth = tmpB.getWidth(); 2360 float iconScale = (float) bmpWidth / iconSize; 2361 float scale = mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY) * iconScale; 2362 int dragLayerX = Math.round(mTempXY[0] - (bmpWidth - scale * child.getWidth()) / 2); 2363 int dragLayerY = Math.round(mTempXY[1]); 2364 2365 // Note: The drag region is used to calculate drag layer offsets, but the 2366 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 2367 Point dragVisualizeOffset = new Point(-padding.get() / 2, padding.get() / 2); 2368 Rect dragRect = new Rect(0, 0, iconSize, iconSize); 2369 2370 if (child.getTag() == null || !(child.getTag() instanceof ItemInfo)) { 2371 String msg = "Drag started with a view that has no tag set. This " 2372 + "will cause a crash (issue 11627249) down the line. " 2373 + "View: " + child + " tag: " + child.getTag(); 2374 throw new IllegalStateException(msg); 2375 } 2376 2377 // Start the drag 2378 DragView dv = mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 2379 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect, scale, false); 2380 dv.setIntrinsicIconScaleFactor(source.getIntrinsicIconScaleFactor()); 2381 2382 // Recycle temporary bitmaps 2383 tmpB.recycle(); 2384 } 2385 2386 public boolean transitionStateShouldAllowDrop() { 2387 return ((!isSwitchingState() || mTransitionProgress > 0.5f) && 2388 (mState == State.NORMAL || mState == State.SPRING_LOADED)); 2389 } 2390 2391 /** 2392 * {@inheritDoc} 2393 */ 2394 public boolean acceptDrop(DragObject d) { 2395 // If it's an external drop (e.g. from All Apps), check if it should be accepted 2396 CellLayout dropTargetLayout = mDropToLayout; 2397 if (d.dragSource != this) { 2398 // Don't accept the drop if we're not over a screen at time of drop 2399 if (dropTargetLayout == null) { 2400 return false; 2401 } 2402 if (!transitionStateShouldAllowDrop()) return false; 2403 2404 mDragViewVisualCenter = d.getVisualCenter(mDragViewVisualCenter); 2405 2406 // We want the point to be mapped to the dragTarget. 2407 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 2408 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2409 } else { 2410 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 2411 } 2412 2413 int spanX = 1; 2414 int spanY = 1; 2415 if (mDragInfo != null) { 2416 final CellLayout.CellInfo dragCellInfo = mDragInfo; 2417 spanX = dragCellInfo.spanX; 2418 spanY = dragCellInfo.spanY; 2419 } else { 2420 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 2421 spanX = dragInfo.spanX; 2422 spanY = dragInfo.spanY; 2423 } 2424 2425 int minSpanX = spanX; 2426 int minSpanY = spanY; 2427 if (d.dragInfo instanceof PendingAddWidgetInfo) { 2428 minSpanX = ((PendingAddWidgetInfo) d.dragInfo).minSpanX; 2429 minSpanY = ((PendingAddWidgetInfo) d.dragInfo).minSpanY; 2430 } 2431 2432 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2433 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, dropTargetLayout, 2434 mTargetCell); 2435 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2436 mDragViewVisualCenter[1], mTargetCell); 2437 if (mCreateUserFolderOnDrop && willCreateUserFolder((ItemInfo) d.dragInfo, 2438 dropTargetLayout, mTargetCell, distance, true)) { 2439 return true; 2440 } 2441 2442 if (mAddToExistingFolderOnDrop && willAddToExistingUserFolder((ItemInfo) d.dragInfo, 2443 dropTargetLayout, mTargetCell, distance)) { 2444 return true; 2445 } 2446 2447 int[] resultSpan = new int[2]; 2448 mTargetCell = dropTargetLayout.performReorder((int) mDragViewVisualCenter[0], 2449 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2450 null, mTargetCell, resultSpan, CellLayout.MODE_ACCEPT_DROP); 2451 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2452 2453 // Don't accept the drop if there's no room for the item 2454 if (!foundCell) { 2455 // Don't show the message if we are dropping on the AllApps button and the hotseat 2456 // is full 2457 boolean isHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2458 if (mTargetCell != null && isHotseat) { 2459 Hotseat hotseat = mLauncher.getHotseat(); 2460 if (hotseat.isAllAppsButtonRank( 2461 hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { 2462 return false; 2463 } 2464 } 2465 2466 mLauncher.showOutOfSpaceMessage(isHotseat); 2467 return false; 2468 } 2469 } 2470 2471 long screenId = getIdForScreen(dropTargetLayout); 2472 if (screenId == EXTRA_EMPTY_SCREEN_ID) { 2473 commitExtraEmptyScreen(); 2474 } 2475 2476 return true; 2477 } 2478 2479 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, 2480 float distance, boolean considerTimeout) { 2481 if (distance > mMaxDistanceForFolderCreation) return false; 2482 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2483 return willCreateUserFolder(info, dropOverView, considerTimeout); 2484 } 2485 2486 boolean willCreateUserFolder(ItemInfo info, View dropOverView, boolean considerTimeout) { 2487 if (dropOverView != null) { 2488 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2489 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2490 return false; 2491 } 2492 } 2493 2494 boolean hasntMoved = false; 2495 if (mDragInfo != null) { 2496 hasntMoved = dropOverView == mDragInfo.cell; 2497 } 2498 2499 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2500 return false; 2501 } 2502 2503 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2504 boolean willBecomeShortcut = 2505 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2506 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2507 2508 return (aboveShortcut && willBecomeShortcut); 2509 } 2510 2511 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell, 2512 float distance) { 2513 if (distance > mMaxDistanceForFolderCreation) return false; 2514 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2515 return willAddToExistingUserFolder(dragInfo, dropOverView); 2516 2517 } 2518 boolean willAddToExistingUserFolder(Object dragInfo, View dropOverView) { 2519 if (dropOverView != null) { 2520 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2521 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2522 return false; 2523 } 2524 } 2525 2526 if (dropOverView instanceof FolderIcon) { 2527 FolderIcon fi = (FolderIcon) dropOverView; 2528 if (fi.acceptDrop(dragInfo)) { 2529 return true; 2530 } 2531 } 2532 return false; 2533 } 2534 2535 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2536 int[] targetCell, float distance, boolean external, DragView dragView, 2537 Runnable postAnimationRunnable) { 2538 if (distance > mMaxDistanceForFolderCreation) return false; 2539 View v = target.getChildAt(targetCell[0], targetCell[1]); 2540 2541 boolean hasntMoved = false; 2542 if (mDragInfo != null) { 2543 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2544 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2545 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2546 } 2547 2548 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2549 mCreateUserFolderOnDrop = false; 2550 final long screenId = (targetCell == null) ? mDragInfo.screenId : getIdForScreen(target); 2551 2552 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2553 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2554 2555 if (aboveShortcut && willBecomeShortcut) { 2556 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2557 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2558 // if the drag started here, we need to remove it from the workspace 2559 if (!external) { 2560 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2561 } 2562 2563 Rect folderLocation = new Rect(); 2564 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2565 target.removeView(v); 2566 2567 FolderIcon fi = 2568 mLauncher.addFolder(target, container, screenId, targetCell[0], targetCell[1]); 2569 destInfo.cellX = -1; 2570 destInfo.cellY = -1; 2571 sourceInfo.cellX = -1; 2572 sourceInfo.cellY = -1; 2573 2574 // If the dragView is null, we can't animate 2575 boolean animate = dragView != null; 2576 if (animate) { 2577 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2578 postAnimationRunnable); 2579 } else { 2580 fi.addItem(destInfo); 2581 fi.addItem(sourceInfo); 2582 } 2583 return true; 2584 } 2585 return false; 2586 } 2587 2588 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2589 float distance, DragObject d, boolean external) { 2590 if (distance > mMaxDistanceForFolderCreation) return false; 2591 2592 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2593 if (!mAddToExistingFolderOnDrop) return false; 2594 mAddToExistingFolderOnDrop = false; 2595 2596 if (dropOverView instanceof FolderIcon) { 2597 FolderIcon fi = (FolderIcon) dropOverView; 2598 if (fi.acceptDrop(d.dragInfo)) { 2599 fi.onDrop(d); 2600 2601 // if the drag started here, we need to remove it from the workspace 2602 if (!external) { 2603 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2604 } 2605 return true; 2606 } 2607 } 2608 return false; 2609 } 2610 2611 @Override 2612 public void prepareAccessibilityDrop() { } 2613 2614 public void onDrop(final DragObject d) { 2615 mDragViewVisualCenter = d.getVisualCenter(mDragViewVisualCenter); 2616 CellLayout dropTargetLayout = mDropToLayout; 2617 2618 // We want the point to be mapped to the dragTarget. 2619 if (dropTargetLayout != null) { 2620 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 2621 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2622 } else { 2623 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 2624 } 2625 } 2626 2627 int snapScreen = WorkspaceStateTransitionAnimation.SCROLL_TO_CURRENT_PAGE; 2628 boolean resizeOnDrop = false; 2629 if (d.dragSource != this) { 2630 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2631 (int) mDragViewVisualCenter[1] }; 2632 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2633 } else if (mDragInfo != null) { 2634 final View cell = mDragInfo.cell; 2635 2636 Runnable resizeRunnable = null; 2637 if (dropTargetLayout != null && !d.cancelled) { 2638 // Move internally 2639 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2640 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2641 long container = hasMovedIntoHotseat ? 2642 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2643 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2644 long screenId = (mTargetCell[0] < 0) ? 2645 mDragInfo.screenId : getIdForScreen(dropTargetLayout); 2646 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2647 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2648 // First we find the cell nearest to point at which the item is 2649 // dropped, without any consideration to whether there is an item there. 2650 2651 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2652 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2653 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2654 mDragViewVisualCenter[1], mTargetCell); 2655 2656 // If the item being dropped is a shortcut and the nearest drop 2657 // cell also contains a shortcut, then create a folder with the two shortcuts. 2658 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2659 dropTargetLayout, mTargetCell, distance, false, d.dragView, null)) { 2660 return; 2661 } 2662 2663 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, 2664 distance, d, false)) { 2665 return; 2666 } 2667 2668 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2669 // we need to find the nearest cell location that is vacant 2670 ItemInfo item = (ItemInfo) d.dragInfo; 2671 int minSpanX = item.spanX; 2672 int minSpanY = item.spanY; 2673 if (item.minSpanX > 0 && item.minSpanY > 0) { 2674 minSpanX = item.minSpanX; 2675 minSpanY = item.minSpanY; 2676 } 2677 2678 int[] resultSpan = new int[2]; 2679 mTargetCell = dropTargetLayout.performReorder((int) mDragViewVisualCenter[0], 2680 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, cell, 2681 mTargetCell, resultSpan, CellLayout.MODE_ON_DROP); 2682 2683 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2684 2685 // if the widget resizes on drop 2686 if (foundCell && (cell instanceof AppWidgetHostView) && 2687 (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY)) { 2688 resizeOnDrop = true; 2689 item.spanX = resultSpan[0]; 2690 item.spanY = resultSpan[1]; 2691 AppWidgetHostView awhv = (AppWidgetHostView) cell; 2692 AppWidgetResizeFrame.updateWidgetSizeRanges(awhv, mLauncher, resultSpan[0], 2693 resultSpan[1]); 2694 } 2695 2696 if (getScreenIdForPageIndex(mCurrentPage) != screenId && !hasMovedIntoHotseat) { 2697 snapScreen = getPageIndexForScreenId(screenId); 2698 snapToPage(snapScreen); 2699 } 2700 2701 if (foundCell) { 2702 final ItemInfo info = (ItemInfo) cell.getTag(); 2703 if (hasMovedLayouts) { 2704 // Reparent the view 2705 CellLayout parentCell = getParentCellLayoutForView(cell); 2706 if (parentCell != null) { 2707 parentCell.removeView(cell); 2708 } else if (LauncherAppState.isDogfoodBuild()) { 2709 throw new NullPointerException("mDragInfo.cell has null parent"); 2710 } 2711 addInScreen(cell, container, screenId, mTargetCell[0], mTargetCell[1], 2712 info.spanX, info.spanY); 2713 } 2714 2715 // update the item's position after drop 2716 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2717 lp.cellX = lp.tmpCellX = mTargetCell[0]; 2718 lp.cellY = lp.tmpCellY = mTargetCell[1]; 2719 lp.cellHSpan = item.spanX; 2720 lp.cellVSpan = item.spanY; 2721 lp.isLockedToGrid = true; 2722 2723 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2724 cell instanceof LauncherAppWidgetHostView) { 2725 final CellLayout cellLayout = dropTargetLayout; 2726 // We post this call so that the widget has a chance to be placed 2727 // in its final location 2728 2729 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2730 AppWidgetProviderInfo pInfo = hostView.getAppWidgetInfo(); 2731 if (pInfo != null && pInfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE 2732 && !d.accessibleDrag) { 2733 final Runnable addResizeFrame = new Runnable() { 2734 public void run() { 2735 DragLayer dragLayer = mLauncher.getDragLayer(); 2736 dragLayer.addResizeFrame(info, hostView, cellLayout); 2737 } 2738 }; 2739 resizeRunnable = (new Runnable() { 2740 public void run() { 2741 if (!isPageMoving()) { 2742 addResizeFrame.run(); 2743 } else { 2744 mDelayedResizeRunnable = addResizeFrame; 2745 } 2746 } 2747 }); 2748 } 2749 } 2750 2751 LauncherModel.modifyItemInDatabase(mLauncher, info, container, screenId, lp.cellX, 2752 lp.cellY, item.spanX, item.spanY); 2753 } else { 2754 // If we can't find a drop location, we return the item to its original position 2755 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2756 mTargetCell[0] = lp.cellX; 2757 mTargetCell[1] = lp.cellY; 2758 CellLayout layout = (CellLayout) cell.getParent().getParent(); 2759 layout.markCellsAsOccupiedForView(cell); 2760 } 2761 } 2762 2763 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2764 final Runnable finalResizeRunnable = resizeRunnable; 2765 // Prepare it to be animated into its new position 2766 // This must be called after the view has been re-parented 2767 final Runnable onCompleteRunnable = new Runnable() { 2768 @Override 2769 public void run() { 2770 mAnimatingViewIntoPlace = false; 2771 updateChildrenLayersEnabled(false); 2772 if (finalResizeRunnable != null) { 2773 finalResizeRunnable.run(); 2774 } 2775 } 2776 }; 2777 mAnimatingViewIntoPlace = true; 2778 if (d.dragView.hasDrawn()) { 2779 final ItemInfo info = (ItemInfo) cell.getTag(); 2780 boolean isWidget = info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET 2781 || info.itemType == LauncherSettings.Favorites.ITEM_TYPE_CUSTOM_APPWIDGET; 2782 if (isWidget) { 2783 int animationType = resizeOnDrop ? ANIMATE_INTO_POSITION_AND_RESIZE : 2784 ANIMATE_INTO_POSITION_AND_DISAPPEAR; 2785 animateWidgetDrop(info, parent, d.dragView, 2786 onCompleteRunnable, animationType, cell, false); 2787 } else { 2788 int duration = snapScreen < 0 ? 2789 WorkspaceStateTransitionAnimation.SCROLL_TO_CURRENT_PAGE : 2790 ADJACENT_SCREEN_DROP_DURATION; 2791 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2792 onCompleteRunnable, this); 2793 } 2794 } else { 2795 d.deferDragViewCleanupPostAnimation = false; 2796 cell.setVisibility(VISIBLE); 2797 } 2798 parent.onDropChild(cell); 2799 } 2800 } 2801 2802 /** 2803 * Computes the area relative to dragLayer which is used to display a page. 2804 */ 2805 public void getPageAreaRelativeToDragLayer(Rect outArea) { 2806 CellLayout child = (CellLayout) getChildAt(getNextPage()); 2807 if (child == null) { 2808 return; 2809 } 2810 ShortcutAndWidgetContainer boundingLayout = child.getShortcutsAndWidgets(); 2811 2812 // Use the absolute left instead of the child left, as we want the visible area 2813 // irrespective of the visible child. Since the view can only scroll horizontally, the 2814 // top position is not affected. 2815 mTempXY[0] = getViewportOffsetX() + getPaddingLeft() + boundingLayout.getLeft(); 2816 mTempXY[1] = child.getTop() + boundingLayout.getTop(); 2817 2818 float scale = mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(this, mTempXY); 2819 outArea.set(mTempXY[0], mTempXY[1], 2820 (int) (mTempXY[0] + scale * boundingLayout.getMeasuredWidth()), 2821 (int) (mTempXY[1] + scale * boundingLayout.getMeasuredHeight())); 2822 } 2823 2824 public void getViewLocationRelativeToSelf(View v, int[] location) { 2825 getLocationInWindow(location); 2826 int x = location[0]; 2827 int y = location[1]; 2828 2829 v.getLocationInWindow(location); 2830 int vX = location[0]; 2831 int vY = location[1]; 2832 2833 location[0] = vX - x; 2834 location[1] = vY - y; 2835 } 2836 2837 @Override 2838 public void onDragEnter(DragObject d) { 2839 if (ENFORCE_DRAG_EVENT_ORDER) { 2840 enfoceDragParity("onDragEnter", 1, 1); 2841 } 2842 2843 mCreateUserFolderOnDrop = false; 2844 mAddToExistingFolderOnDrop = false; 2845 2846 mDropToLayout = null; 2847 CellLayout layout = getCurrentDropLayout(); 2848 setCurrentDropLayout(layout); 2849 setCurrentDragOverlappingLayout(layout); 2850 2851 if (!workspaceInModalState()) { 2852 mLauncher.getDragLayer().showPageHints(); 2853 } 2854 } 2855 2856 /** Return a rect that has the cellWidth/cellHeight (left, top), and 2857 * widthGap/heightGap (right, bottom) */ 2858 static Rect getCellLayoutMetrics(Launcher launcher, int orientation) { 2859 LauncherAppState app = LauncherAppState.getInstance(); 2860 InvariantDeviceProfile inv = app.getInvariantDeviceProfile(); 2861 2862 Display display = launcher.getWindowManager().getDefaultDisplay(); 2863 Point smallestSize = new Point(); 2864 Point largestSize = new Point(); 2865 display.getCurrentSizeRange(smallestSize, largestSize); 2866 int countX = (int) inv.numColumns; 2867 int countY = (int) inv.numRows; 2868 boolean isLayoutRtl = Utilities.isRtl(launcher.getResources()); 2869 if (orientation == CellLayout.LANDSCAPE) { 2870 if (mLandscapeCellLayoutMetrics == null) { 2871 Rect padding = inv.landscapeProfile.getWorkspacePadding(isLayoutRtl); 2872 int width = largestSize.x - padding.left - padding.right; 2873 int height = smallestSize.y - padding.top - padding.bottom; 2874 mLandscapeCellLayoutMetrics = new Rect(); 2875 mLandscapeCellLayoutMetrics.set( 2876 DeviceProfile.calculateCellWidth(width, countX), 2877 DeviceProfile.calculateCellHeight(height, countY), 0, 0); 2878 } 2879 return mLandscapeCellLayoutMetrics; 2880 } else if (orientation == CellLayout.PORTRAIT) { 2881 if (mPortraitCellLayoutMetrics == null) { 2882 Rect padding = inv.portraitProfile.getWorkspacePadding(isLayoutRtl); 2883 int width = smallestSize.x - padding.left - padding.right; 2884 int height = largestSize.y - padding.top - padding.bottom; 2885 mPortraitCellLayoutMetrics = new Rect(); 2886 mPortraitCellLayoutMetrics.set( 2887 DeviceProfile.calculateCellWidth(width, countX), 2888 DeviceProfile.calculateCellHeight(height, countY), 0, 0); 2889 } 2890 return mPortraitCellLayoutMetrics; 2891 } 2892 return null; 2893 } 2894 2895 @Override 2896 public void onDragExit(DragObject d) { 2897 if (ENFORCE_DRAG_EVENT_ORDER) { 2898 enfoceDragParity("onDragExit", -1, 0); 2899 } 2900 2901 // Here we store the final page that will be dropped to, if the workspace in fact 2902 // receives the drop 2903 if (mInScrollArea) { 2904 if (isPageMoving()) { 2905 // If the user drops while the page is scrolling, we should use that page as the 2906 // destination instead of the page that is being hovered over. 2907 mDropToLayout = (CellLayout) getPageAt(getNextPage()); 2908 } else { 2909 mDropToLayout = mDragOverlappingLayout; 2910 } 2911 } else { 2912 mDropToLayout = mDragTargetLayout; 2913 } 2914 2915 if (mDragMode == DRAG_MODE_CREATE_FOLDER) { 2916 mCreateUserFolderOnDrop = true; 2917 } else if (mDragMode == DRAG_MODE_ADD_TO_FOLDER) { 2918 mAddToExistingFolderOnDrop = true; 2919 } 2920 2921 // Reset the scroll area and previous drag target 2922 onResetScrollArea(); 2923 setCurrentDropLayout(null); 2924 setCurrentDragOverlappingLayout(null); 2925 2926 mSpringLoadedDragController.cancel(); 2927 2928 mLauncher.getDragLayer().hidePageHints(); 2929 } 2930 2931 private void enfoceDragParity(String event, int update, int expectedValue) { 2932 enfoceDragParity(this, event, update, expectedValue); 2933 for (int i = 0; i < getChildCount(); i++) { 2934 enfoceDragParity(getChildAt(i), event, update, expectedValue); 2935 } 2936 } 2937 2938 private void enfoceDragParity(View v, String event, int update, int expectedValue) { 2939 Object tag = v.getTag(R.id.drag_event_parity); 2940 int value = tag == null ? 0 : (Integer) tag; 2941 value += update; 2942 v.setTag(R.id.drag_event_parity, value); 2943 2944 if (value != expectedValue) { 2945 Log.e(TAG, event + ": Drag contract violated: " + value); 2946 } 2947 } 2948 2949 void setCurrentDropLayout(CellLayout layout) { 2950 if (mDragTargetLayout != null) { 2951 mDragTargetLayout.revertTempState(); 2952 mDragTargetLayout.onDragExit(); 2953 } 2954 mDragTargetLayout = layout; 2955 if (mDragTargetLayout != null) { 2956 mDragTargetLayout.onDragEnter(); 2957 } 2958 cleanupReorder(true); 2959 cleanupFolderCreation(); 2960 setCurrentDropOverCell(-1, -1); 2961 } 2962 2963 void setCurrentDragOverlappingLayout(CellLayout layout) { 2964 if (mDragOverlappingLayout != null) { 2965 mDragOverlappingLayout.setIsDragOverlapping(false); 2966 } 2967 mDragOverlappingLayout = layout; 2968 if (mDragOverlappingLayout != null) { 2969 mDragOverlappingLayout.setIsDragOverlapping(true); 2970 } 2971 invalidate(); 2972 } 2973 2974 void setCurrentDropOverCell(int x, int y) { 2975 if (x != mDragOverX || y != mDragOverY) { 2976 mDragOverX = x; 2977 mDragOverY = y; 2978 setDragMode(DRAG_MODE_NONE); 2979 } 2980 } 2981 2982 void setDragMode(int dragMode) { 2983 if (dragMode != mDragMode) { 2984 if (dragMode == DRAG_MODE_NONE) { 2985 cleanupAddToFolder(); 2986 // We don't want to cancel the re-order alarm every time the target cell changes 2987 // as this feels to slow / unresponsive. 2988 cleanupReorder(false); 2989 cleanupFolderCreation(); 2990 } else if (dragMode == DRAG_MODE_ADD_TO_FOLDER) { 2991 cleanupReorder(true); 2992 cleanupFolderCreation(); 2993 } else if (dragMode == DRAG_MODE_CREATE_FOLDER) { 2994 cleanupAddToFolder(); 2995 cleanupReorder(true); 2996 } else if (dragMode == DRAG_MODE_REORDER) { 2997 cleanupAddToFolder(); 2998 cleanupFolderCreation(); 2999 } 3000 mDragMode = dragMode; 3001 } 3002 } 3003 3004 private void cleanupFolderCreation() { 3005 if (mDragFolderRingAnimator != null) { 3006 mDragFolderRingAnimator.animateToNaturalState(); 3007 mDragFolderRingAnimator = null; 3008 } 3009 mFolderCreationAlarm.setOnAlarmListener(null); 3010 mFolderCreationAlarm.cancelAlarm(); 3011 } 3012 3013 private void cleanupAddToFolder() { 3014 if (mDragOverFolderIcon != null) { 3015 mDragOverFolderIcon.onDragExit(null); 3016 mDragOverFolderIcon = null; 3017 } 3018 } 3019 3020 private void cleanupReorder(boolean cancelAlarm) { 3021 // Any pending reorders are canceled 3022 if (cancelAlarm) { 3023 mReorderAlarm.cancelAlarm(); 3024 } 3025 mLastReorderX = -1; 3026 mLastReorderY = -1; 3027 } 3028 3029 /* 3030 * 3031 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 3032 * coordinate space. The argument xy is modified with the return result. 3033 * 3034 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 3035 * computing it itself; we use this to avoid redundant matrix inversions in 3036 * findMatchingPageForDragOver 3037 * 3038 */ 3039 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 3040 xy[0] = xy[0] - v.getLeft(); 3041 xy[1] = xy[1] - v.getTop(); 3042 } 3043 3044 boolean isPointInSelfOverHotseat(int x, int y, Rect r) { 3045 if (r == null) { 3046 r = new Rect(); 3047 } 3048 mTempPt[0] = x; 3049 mTempPt[1] = y; 3050 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(this, mTempPt, true); 3051 3052 DeviceProfile grid = mLauncher.getDeviceProfile(); 3053 r = grid.getHotseatRect(); 3054 if (r.contains(mTempPt[0], mTempPt[1])) { 3055 return true; 3056 } 3057 return false; 3058 } 3059 3060 void mapPointFromSelfToHotseatLayout(Hotseat hotseat, float[] xy) { 3061 mTempPt[0] = (int) xy[0]; 3062 mTempPt[1] = (int) xy[1]; 3063 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(this, mTempPt, true); 3064 mLauncher.getDragLayer().mapCoordInSelfToDescendent(hotseat.getLayout(), mTempPt); 3065 3066 xy[0] = mTempPt[0]; 3067 xy[1] = mTempPt[1]; 3068 } 3069 3070 /* 3071 * 3072 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 3073 * the parent View's coordinate space. The argument xy is modified with the return result. 3074 * 3075 */ 3076 void mapPointFromChildToSelf(View v, float[] xy) { 3077 xy[0] += v.getLeft(); 3078 xy[1] += v.getTop(); 3079 } 3080 3081 static private float squaredDistance(float[] point1, float[] point2) { 3082 float distanceX = point1[0] - point2[0]; 3083 float distanceY = point2[1] - point2[1]; 3084 return distanceX * distanceX + distanceY * distanceY; 3085 } 3086 3087 /* 3088 * 3089 * This method returns the CellLayout that is currently being dragged to. In order to drag 3090 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 3091 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 3092 * 3093 * Return null if no CellLayout is currently being dragged over 3094 * 3095 */ 3096 private CellLayout findMatchingPageForDragOver( 3097 DragView dragView, float originX, float originY, boolean exact) { 3098 // We loop through all the screens (ie CellLayouts) and see which ones overlap 3099 // with the item being dragged and then choose the one that's closest to the touch point 3100 final int screenCount = getChildCount(); 3101 CellLayout bestMatchingScreen = null; 3102 float smallestDistSoFar = Float.MAX_VALUE; 3103 3104 for (int i = 0; i < screenCount; i++) { 3105 // The custom content screen is not a valid drag over option 3106 if (mScreenOrder.get(i) == CUSTOM_CONTENT_SCREEN_ID) { 3107 continue; 3108 } 3109 3110 CellLayout cl = (CellLayout) getChildAt(i); 3111 3112 final float[] touchXy = {originX, originY}; 3113 // Transform the touch coordinates to the CellLayout's local coordinates 3114 // If the touch point is within the bounds of the cell layout, we can return immediately 3115 cl.getMatrix().invert(mTempInverseMatrix); 3116 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 3117 3118 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 3119 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 3120 return cl; 3121 } 3122 3123 if (!exact) { 3124 // Get the center of the cell layout in screen coordinates 3125 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 3126 cellLayoutCenter[0] = cl.getWidth()/2; 3127 cellLayoutCenter[1] = cl.getHeight()/2; 3128 mapPointFromChildToSelf(cl, cellLayoutCenter); 3129 3130 touchXy[0] = originX; 3131 touchXy[1] = originY; 3132 3133 // Calculate the distance between the center of the CellLayout 3134 // and the touch point 3135 float dist = squaredDistance(touchXy, cellLayoutCenter); 3136 3137 if (dist < smallestDistSoFar) { 3138 smallestDistSoFar = dist; 3139 bestMatchingScreen = cl; 3140 } 3141 } 3142 } 3143 return bestMatchingScreen; 3144 } 3145 3146 private boolean isDragWidget(DragObject d) { 3147 return (d.dragInfo instanceof LauncherAppWidgetInfo || 3148 d.dragInfo instanceof PendingAddWidgetInfo); 3149 } 3150 private boolean isExternalDragWidget(DragObject d) { 3151 return d.dragSource != this && isDragWidget(d); 3152 } 3153 3154 public void onDragOver(DragObject d) { 3155 // Skip drag over events while we are dragging over side pages 3156 if (mInScrollArea || !transitionStateShouldAllowDrop()) return; 3157 3158 Rect r = new Rect(); 3159 CellLayout layout = null; 3160 ItemInfo item = (ItemInfo) d.dragInfo; 3161 if (item == null) { 3162 if (LauncherAppState.isDogfoodBuild()) { 3163 throw new NullPointerException("DragObject has null info"); 3164 } 3165 return; 3166 } 3167 3168 // Ensure that we have proper spans for the item that we are dropping 3169 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 3170 mDragViewVisualCenter = d.getVisualCenter(mDragViewVisualCenter); 3171 3172 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 3173 // Identify whether we have dragged over a side page 3174 if (workspaceInModalState()) { 3175 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 3176 if (isPointInSelfOverHotseat(d.x, d.y, r)) { 3177 layout = mLauncher.getHotseat().getLayout(); 3178 } 3179 } 3180 if (layout == null) { 3181 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false); 3182 } 3183 if (layout != mDragTargetLayout) { 3184 setCurrentDropLayout(layout); 3185 setCurrentDragOverlappingLayout(layout); 3186 3187 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 3188 if (isInSpringLoadedMode) { 3189 if (mLauncher.isHotseatLayout(layout)) { 3190 mSpringLoadedDragController.cancel(); 3191 } else { 3192 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 3193 } 3194 } 3195 } 3196 } else { 3197 // Test to see if we are over the hotseat otherwise just use the current page 3198 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 3199 if (isPointInSelfOverHotseat(d.x, d.y, r)) { 3200 layout = mLauncher.getHotseat().getLayout(); 3201 } 3202 } 3203 if (layout == null) { 3204 layout = getCurrentDropLayout(); 3205 } 3206 if (layout != mDragTargetLayout) { 3207 setCurrentDropLayout(layout); 3208 setCurrentDragOverlappingLayout(layout); 3209 } 3210 } 3211 3212 // Handle the drag over 3213 if (mDragTargetLayout != null) { 3214 // We want the point to be mapped to the dragTarget. 3215 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 3216 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 3217 } else { 3218 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 3219 } 3220 3221 int minSpanX = item.spanX; 3222 int minSpanY = item.spanY; 3223 if (item.minSpanX > 0 && item.minSpanY > 0) { 3224 minSpanX = item.minSpanX; 3225 minSpanY = item.minSpanY; 3226 } 3227 3228 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 3229 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, 3230 mDragTargetLayout, mTargetCell); 3231 int reorderX = mTargetCell[0]; 3232 int reorderY = mTargetCell[1]; 3233 3234 setCurrentDropOverCell(mTargetCell[0], mTargetCell[1]); 3235 3236 float targetCellDistance = mDragTargetLayout.getDistanceFromCell( 3237 mDragViewVisualCenter[0], mDragViewVisualCenter[1], mTargetCell); 3238 3239 manageFolderFeedback(mDragTargetLayout, mTargetCell, targetCellDistance, d); 3240 3241 boolean nearestDropOccupied = mDragTargetLayout.isNearestDropLocationOccupied((int) 3242 mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], item.spanX, 3243 item.spanY, child, mTargetCell); 3244 3245 if (!nearestDropOccupied) { 3246 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 3247 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 3248 mTargetCell[0], mTargetCell[1], item.spanX, item.spanY, false, d); 3249 } else if ((mDragMode == DRAG_MODE_NONE || mDragMode == DRAG_MODE_REORDER) 3250 && !mReorderAlarm.alarmPending() && (mLastReorderX != reorderX || 3251 mLastReorderY != reorderY)) { 3252 3253 int[] resultSpan = new int[2]; 3254 mDragTargetLayout.performReorder((int) mDragViewVisualCenter[0], 3255 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, item.spanX, item.spanY, 3256 child, mTargetCell, resultSpan, CellLayout.MODE_SHOW_REORDER_HINT); 3257 3258 // Otherwise, if we aren't adding to or creating a folder and there's no pending 3259 // reorder, then we schedule a reorder 3260 ReorderAlarmListener listener = new ReorderAlarmListener(mDragViewVisualCenter, 3261 minSpanX, minSpanY, item.spanX, item.spanY, d, child); 3262 mReorderAlarm.setOnAlarmListener(listener); 3263 mReorderAlarm.setAlarm(REORDER_TIMEOUT); 3264 } 3265 3266 if (mDragMode == DRAG_MODE_CREATE_FOLDER || mDragMode == DRAG_MODE_ADD_TO_FOLDER || 3267 !nearestDropOccupied) { 3268 if (mDragTargetLayout != null) { 3269 mDragTargetLayout.revertTempState(); 3270 } 3271 } 3272 } 3273 } 3274 3275 private void manageFolderFeedback(CellLayout targetLayout, 3276 int[] targetCell, float distance, DragObject dragObject) { 3277 if (distance > mMaxDistanceForFolderCreation) return; 3278 3279 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], mTargetCell[1]); 3280 ItemInfo info = (ItemInfo) dragObject.dragInfo; 3281 boolean userFolderPending = willCreateUserFolder(info, dragOverView, false); 3282 if (mDragMode == DRAG_MODE_NONE && userFolderPending && 3283 !mFolderCreationAlarm.alarmPending()) { 3284 3285 FolderCreationAlarmListener listener = new 3286 FolderCreationAlarmListener(targetLayout, targetCell[0], targetCell[1]); 3287 3288 if (!dragObject.accessibleDrag) { 3289 mFolderCreationAlarm.setOnAlarmListener(listener); 3290 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 3291 } else { 3292 listener.onAlarm(mFolderCreationAlarm); 3293 } 3294 3295 if (dragObject.stateAnnouncer != null) { 3296 dragObject.stateAnnouncer.announce(WorkspaceAccessibilityHelper 3297 .getDescriptionForDropOver(dragOverView, getContext())); 3298 } 3299 return; 3300 } 3301 3302 boolean willAddToFolder = willAddToExistingUserFolder(info, dragOverView); 3303 if (willAddToFolder && mDragMode == DRAG_MODE_NONE) { 3304 mDragOverFolderIcon = ((FolderIcon) dragOverView); 3305 mDragOverFolderIcon.onDragEnter(info); 3306 if (targetLayout != null) { 3307 targetLayout.clearDragOutlines(); 3308 } 3309 setDragMode(DRAG_MODE_ADD_TO_FOLDER); 3310 3311 if (dragObject.stateAnnouncer != null) { 3312 dragObject.stateAnnouncer.announce(WorkspaceAccessibilityHelper 3313 .getDescriptionForDropOver(dragOverView, getContext())); 3314 } 3315 return; 3316 } 3317 3318 if (mDragMode == DRAG_MODE_ADD_TO_FOLDER && !willAddToFolder) { 3319 setDragMode(DRAG_MODE_NONE); 3320 } 3321 if (mDragMode == DRAG_MODE_CREATE_FOLDER && !userFolderPending) { 3322 setDragMode(DRAG_MODE_NONE); 3323 } 3324 } 3325 3326 class FolderCreationAlarmListener implements OnAlarmListener { 3327 CellLayout layout; 3328 int cellX; 3329 int cellY; 3330 3331 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 3332 this.layout = layout; 3333 this.cellX = cellX; 3334 this.cellY = cellY; 3335 } 3336 3337 public void onAlarm(Alarm alarm) { 3338 if (mDragFolderRingAnimator != null) { 3339 // This shouldn't happen ever, but just in case, make sure we clean up the mess. 3340 mDragFolderRingAnimator.animateToNaturalState(); 3341 } 3342 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 3343 mDragFolderRingAnimator.setCell(cellX, cellY); 3344 mDragFolderRingAnimator.setCellLayout(layout); 3345 mDragFolderRingAnimator.animateToAcceptState(); 3346 layout.showFolderAccept(mDragFolderRingAnimator); 3347 layout.clearDragOutlines(); 3348 setDragMode(DRAG_MODE_CREATE_FOLDER); 3349 } 3350 } 3351 3352 class ReorderAlarmListener implements OnAlarmListener { 3353 float[] dragViewCenter; 3354 int minSpanX, minSpanY, spanX, spanY; 3355 DragObject dragObject; 3356 View child; 3357 3358 public ReorderAlarmListener(float[] dragViewCenter, int minSpanX, int minSpanY, int spanX, 3359 int spanY, DragObject dragObject, View child) { 3360 this.dragViewCenter = dragViewCenter; 3361 this.minSpanX = minSpanX; 3362 this.minSpanY = minSpanY; 3363 this.spanX = spanX; 3364 this.spanY = spanY; 3365 this.child = child; 3366 this.dragObject = dragObject; 3367 } 3368 3369 public void onAlarm(Alarm alarm) { 3370 int[] resultSpan = new int[2]; 3371 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 3372 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, mDragTargetLayout, 3373 mTargetCell); 3374 mLastReorderX = mTargetCell[0]; 3375 mLastReorderY = mTargetCell[1]; 3376 3377 mTargetCell = mDragTargetLayout.performReorder((int) mDragViewVisualCenter[0], 3378 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 3379 child, mTargetCell, resultSpan, CellLayout.MODE_DRAG_OVER); 3380 3381 if (mTargetCell[0] < 0 || mTargetCell[1] < 0) { 3382 mDragTargetLayout.revertTempState(); 3383 } else { 3384 setDragMode(DRAG_MODE_REORDER); 3385 } 3386 3387 boolean resize = resultSpan[0] != spanX || resultSpan[1] != spanY; 3388 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 3389 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 3390 mTargetCell[0], mTargetCell[1], resultSpan[0], resultSpan[1], resize, dragObject); 3391 } 3392 } 3393 3394 @Override 3395 public void getHitRectRelativeToDragLayer(Rect outRect) { 3396 // We want the workspace to have the whole area of the display (it will find the correct 3397 // cell layout to drop to in the existing drag/drop logic. 3398 mLauncher.getDragLayer().getDescendantRectRelativeToSelf(this, outRect); 3399 } 3400 3401 /** 3402 * Add the item specified by dragInfo to the given layout. 3403 * @return true if successful 3404 */ 3405 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 3406 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 3407 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 3408 return true; 3409 } 3410 mLauncher.showOutOfSpaceMessage(mLauncher.isHotseatLayout(layout)); 3411 return false; 3412 } 3413 3414 private void onDropExternal(int[] touchXY, Object dragInfo, 3415 CellLayout cellLayout, boolean insertAtFirst) { 3416 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 3417 } 3418 3419 /** 3420 * Drop an item that didn't originate on one of the workspace screens. 3421 * It may have come from Launcher (e.g. from all apps or customize), or it may have 3422 * come from another app altogether. 3423 * 3424 * NOTE: This can also be called when we are outside of a drag event, when we want 3425 * to add an item to one of the workspace screens. 3426 */ 3427 private void onDropExternal(final int[] touchXY, final Object dragInfo, 3428 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 3429 final Runnable exitSpringLoadedRunnable = new Runnable() { 3430 @Override 3431 public void run() { 3432 mLauncher.exitSpringLoadedDragModeDelayed(true, 3433 Launcher.EXIT_SPRINGLOADED_MODE_SHORT_TIMEOUT, null); 3434 } 3435 }; 3436 3437 ItemInfo info = (ItemInfo) dragInfo; 3438 int spanX = info.spanX; 3439 int spanY = info.spanY; 3440 if (mDragInfo != null) { 3441 spanX = mDragInfo.spanX; 3442 spanY = mDragInfo.spanY; 3443 } 3444 3445 final long container = mLauncher.isHotseatLayout(cellLayout) ? 3446 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 3447 LauncherSettings.Favorites.CONTAINER_DESKTOP; 3448 final long screenId = getIdForScreen(cellLayout); 3449 if (!mLauncher.isHotseatLayout(cellLayout) 3450 && screenId != getScreenIdForPageIndex(mCurrentPage) 3451 && mState != State.SPRING_LOADED) { 3452 snapToScreenId(screenId, null); 3453 } 3454 3455 if (info instanceof PendingAddItemInfo) { 3456 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 3457 3458 boolean findNearestVacantCell = true; 3459 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 3460 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3461 cellLayout, mTargetCell); 3462 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3463 mDragViewVisualCenter[1], mTargetCell); 3464 if (willCreateUserFolder((ItemInfo) d.dragInfo, cellLayout, mTargetCell, 3465 distance, true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 3466 cellLayout, mTargetCell, distance)) { 3467 findNearestVacantCell = false; 3468 } 3469 } 3470 3471 final ItemInfo item = (ItemInfo) d.dragInfo; 3472 boolean updateWidgetSize = false; 3473 if (findNearestVacantCell) { 3474 int minSpanX = item.spanX; 3475 int minSpanY = item.spanY; 3476 if (item.minSpanX > 0 && item.minSpanY > 0) { 3477 minSpanX = item.minSpanX; 3478 minSpanY = item.minSpanY; 3479 } 3480 int[] resultSpan = new int[2]; 3481 mTargetCell = cellLayout.performReorder((int) mDragViewVisualCenter[0], 3482 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, info.spanX, info.spanY, 3483 null, mTargetCell, resultSpan, CellLayout.MODE_ON_DROP_EXTERNAL); 3484 3485 if (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY) { 3486 updateWidgetSize = true; 3487 } 3488 item.spanX = resultSpan[0]; 3489 item.spanY = resultSpan[1]; 3490 } 3491 3492 Runnable onAnimationCompleteRunnable = new Runnable() { 3493 @Override 3494 public void run() { 3495 // Normally removeExtraEmptyScreen is called in Workspace#onDragEnd, but when 3496 // adding an item that may not be dropped right away (due to a config activity) 3497 // we defer the removal until the activity returns. 3498 deferRemoveExtraEmptyScreen(); 3499 3500 // When dragging and dropping from customization tray, we deal with creating 3501 // widgets/shortcuts/folders in a slightly different way 3502 mLauncher.addPendingItem(pendingInfo, container, screenId, mTargetCell, 3503 item.spanX, item.spanY); 3504 } 3505 }; 3506 boolean isWidget = pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET 3507 || pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_CUSTOM_APPWIDGET; 3508 3509 View finalView = isWidget ? ((PendingAddWidgetInfo) pendingInfo).boundWidget : null; 3510 3511 if (finalView instanceof AppWidgetHostView && updateWidgetSize) { 3512 AppWidgetHostView awhv = (AppWidgetHostView) finalView; 3513 AppWidgetResizeFrame.updateWidgetSizeRanges(awhv, mLauncher, item.spanX, 3514 item.spanY); 3515 } 3516 3517 int animationStyle = ANIMATE_INTO_POSITION_AND_DISAPPEAR; 3518 if (isWidget && ((PendingAddWidgetInfo) pendingInfo).info != null && 3519 ((PendingAddWidgetInfo) pendingInfo).info.configure != null) { 3520 animationStyle = ANIMATE_INTO_POSITION_AND_REMAIN; 3521 } 3522 animateWidgetDrop(info, cellLayout, d.dragView, onAnimationCompleteRunnable, 3523 animationStyle, finalView, true); 3524 } else { 3525 // This is for other drag/drop cases, like dragging from All Apps 3526 View view = null; 3527 3528 switch (info.itemType) { 3529 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 3530 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3531 if (info.container == NO_ID && info instanceof AppInfo) { 3532 // Came from all apps -- make a copy 3533 info = ((AppInfo) info).makeShortcut(); 3534 } 3535 view = mLauncher.createShortcut(cellLayout, (ShortcutInfo) info); 3536 break; 3537 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 3538 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 3539 (FolderInfo) info, mIconCache); 3540 break; 3541 default: 3542 throw new IllegalStateException("Unknown item type: " + info.itemType); 3543 } 3544 3545 // First we find the cell nearest to point at which the item is 3546 // dropped, without any consideration to whether there is an item there. 3547 if (touchXY != null) { 3548 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3549 cellLayout, mTargetCell); 3550 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3551 mDragViewVisualCenter[1], mTargetCell); 3552 d.postAnimationRunnable = exitSpringLoadedRunnable; 3553 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, distance, 3554 true, d.dragView, d.postAnimationRunnable)) { 3555 return; 3556 } 3557 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, distance, d, 3558 true)) { 3559 return; 3560 } 3561 } 3562 3563 if (touchXY != null) { 3564 // when dragging and dropping, just find the closest free spot 3565 mTargetCell = cellLayout.performReorder((int) mDragViewVisualCenter[0], 3566 (int) mDragViewVisualCenter[1], 1, 1, 1, 1, 3567 null, mTargetCell, null, CellLayout.MODE_ON_DROP_EXTERNAL); 3568 } else { 3569 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3570 } 3571 // Add the item to DB before adding to screen ensures that the container and other 3572 // values of the info is properly updated. 3573 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screenId, 3574 mTargetCell[0], mTargetCell[1]); 3575 3576 addInScreen(view, container, screenId, mTargetCell[0], mTargetCell[1], info.spanX, 3577 info.spanY, insertAtFirst); 3578 cellLayout.onDropChild(view); 3579 cellLayout.getShortcutsAndWidgets().measureChild(view); 3580 3581 if (d.dragView != null) { 3582 // We wrap the animation call in the temporary set and reset of the current 3583 // cellLayout to its final transform -- this means we animate the drag view to 3584 // the correct final location. 3585 setFinalTransitionTransform(cellLayout); 3586 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 3587 exitSpringLoadedRunnable, this); 3588 resetTransitionTransform(cellLayout); 3589 } 3590 } 3591 } 3592 3593 public Bitmap createWidgetBitmap(ItemInfo widgetInfo, View layout) { 3594 int[] unScaledSize = mLauncher.getWorkspace().estimateItemSize(widgetInfo, false); 3595 int visibility = layout.getVisibility(); 3596 layout.setVisibility(VISIBLE); 3597 3598 int width = MeasureSpec.makeMeasureSpec(unScaledSize[0], MeasureSpec.EXACTLY); 3599 int height = MeasureSpec.makeMeasureSpec(unScaledSize[1], MeasureSpec.EXACTLY); 3600 Bitmap b = Bitmap.createBitmap(unScaledSize[0], unScaledSize[1], 3601 Bitmap.Config.ARGB_8888); 3602 mCanvas.setBitmap(b); 3603 3604 layout.measure(width, height); 3605 layout.layout(0, 0, unScaledSize[0], unScaledSize[1]); 3606 layout.draw(mCanvas); 3607 mCanvas.setBitmap(null); 3608 layout.setVisibility(visibility); 3609 return b; 3610 } 3611 3612 private void getFinalPositionForDropAnimation(int[] loc, float[] scaleXY, 3613 DragView dragView, CellLayout layout, ItemInfo info, int[] targetCell, 3614 boolean external, boolean scale) { 3615 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 3616 // location and size on the home screen. 3617 int spanX = info.spanX; 3618 int spanY = info.spanY; 3619 3620 Rect r = estimateItemPosition(layout, info, targetCell[0], targetCell[1], spanX, spanY); 3621 loc[0] = r.left; 3622 loc[1] = r.top; 3623 3624 setFinalTransitionTransform(layout); 3625 float cellLayoutScale = 3626 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(layout, loc, true); 3627 resetTransitionTransform(layout); 3628 3629 float dragViewScaleX; 3630 float dragViewScaleY; 3631 if (scale) { 3632 dragViewScaleX = (1.0f * r.width()) / dragView.getMeasuredWidth(); 3633 dragViewScaleY = (1.0f * r.height()) / dragView.getMeasuredHeight(); 3634 } else { 3635 dragViewScaleX = 1f; 3636 dragViewScaleY = 1f; 3637 } 3638 3639 // The animation will scale the dragView about its center, so we need to center about 3640 // the final location. 3641 loc[0] -= (dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 3642 loc[1] -= (dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 3643 3644 scaleXY[0] = dragViewScaleX * cellLayoutScale; 3645 scaleXY[1] = dragViewScaleY * cellLayoutScale; 3646 } 3647 3648 public void animateWidgetDrop(ItemInfo info, CellLayout cellLayout, DragView dragView, 3649 final Runnable onCompleteRunnable, int animationType, final View finalView, 3650 boolean external) { 3651 Rect from = new Rect(); 3652 mLauncher.getDragLayer().getViewRectRelativeToSelf(dragView, from); 3653 3654 int[] finalPos = new int[2]; 3655 float scaleXY[] = new float[2]; 3656 boolean scalePreview = !(info instanceof PendingAddShortcutInfo); 3657 getFinalPositionForDropAnimation(finalPos, scaleXY, dragView, cellLayout, info, mTargetCell, 3658 external, scalePreview); 3659 3660 Resources res = mLauncher.getResources(); 3661 final int duration = res.getInteger(R.integer.config_dropAnimMaxDuration) - 200; 3662 3663 // In the case where we've prebound the widget, we remove it from the DragLayer 3664 if (finalView instanceof AppWidgetHostView && external) { 3665 mLauncher.getDragLayer().removeView(finalView); 3666 } 3667 3668 boolean isWidget = info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET || 3669 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_CUSTOM_APPWIDGET; 3670 if ((animationType == ANIMATE_INTO_POSITION_AND_RESIZE || external) && finalView != null) { 3671 Bitmap crossFadeBitmap = createWidgetBitmap(info, finalView); 3672 dragView.setCrossFadeBitmap(crossFadeBitmap); 3673 dragView.crossFade((int) (duration * 0.8f)); 3674 } else if (isWidget && external) { 3675 scaleXY[0] = scaleXY[1] = Math.min(scaleXY[0], scaleXY[1]); 3676 } 3677 3678 DragLayer dragLayer = mLauncher.getDragLayer(); 3679 if (animationType == CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION) { 3680 mLauncher.getDragLayer().animateViewIntoPosition(dragView, finalPos, 0f, 0.1f, 0.1f, 3681 DragLayer.ANIMATION_END_DISAPPEAR, onCompleteRunnable, duration); 3682 } else { 3683 int endStyle; 3684 if (animationType == ANIMATE_INTO_POSITION_AND_REMAIN) { 3685 endStyle = DragLayer.ANIMATION_END_REMAIN_VISIBLE; 3686 } else { 3687 endStyle = DragLayer.ANIMATION_END_DISAPPEAR;; 3688 } 3689 3690 Runnable onComplete = new Runnable() { 3691 @Override 3692 public void run() { 3693 if (finalView != null) { 3694 finalView.setVisibility(VISIBLE); 3695 } 3696 if (onCompleteRunnable != null) { 3697 onCompleteRunnable.run(); 3698 } 3699 } 3700 }; 3701 dragLayer.animateViewIntoPosition(dragView, from.left, from.top, finalPos[0], 3702 finalPos[1], 1, 1, 1, scaleXY[0], scaleXY[1], onComplete, endStyle, 3703 duration, this); 3704 } 3705 } 3706 3707 public void setFinalTransitionTransform(CellLayout layout) { 3708 if (isSwitchingState()) { 3709 mCurrentScale = getScaleX(); 3710 setScaleX(mStateTransitionAnimation.getFinalScale()); 3711 setScaleY(mStateTransitionAnimation.getFinalScale()); 3712 } 3713 } 3714 public void resetTransitionTransform(CellLayout layout) { 3715 if (isSwitchingState()) { 3716 setScaleX(mCurrentScale); 3717 setScaleY(mCurrentScale); 3718 } 3719 } 3720 3721 /** 3722 * Return the current {@link CellLayout}, correctly picking the destination 3723 * screen while a scroll is in progress. 3724 */ 3725 public CellLayout getCurrentDropLayout() { 3726 return (CellLayout) getChildAt(getNextPage()); 3727 } 3728 3729 /** 3730 * Return the current CellInfo describing our current drag; this method exists 3731 * so that Launcher can sync this object with the correct info when the activity is created/ 3732 * destroyed 3733 * 3734 */ 3735 public CellLayout.CellInfo getDragInfo() { 3736 return mDragInfo; 3737 } 3738 3739 public int getCurrentPageOffsetFromCustomContent() { 3740 return getNextPage() - numCustomPages(); 3741 } 3742 3743 /** 3744 * Calculate the nearest cell where the given object would be dropped. 3745 * 3746 * pixelX and pixelY should be in the coordinate system of layout 3747 */ 3748 @Thunk int[] findNearestArea(int pixelX, int pixelY, 3749 int spanX, int spanY, CellLayout layout, int[] recycle) { 3750 return layout.findNearestArea( 3751 pixelX, pixelY, spanX, spanY, recycle); 3752 } 3753 3754 void setup(DragController dragController) { 3755 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3756 mDragController = dragController; 3757 3758 // hardware layers on children are enabled on startup, but should be disabled until 3759 // needed 3760 updateChildrenLayersEnabled(false); 3761 } 3762 3763 /** 3764 * Called at the end of a drag which originated on the workspace. 3765 */ 3766 public void onDropCompleted(final View target, final DragObject d, 3767 final boolean isFlingToDelete, final boolean success) { 3768 if (mDeferDropAfterUninstall) { 3769 mDeferredAction = new Runnable() { 3770 public void run() { 3771 onDropCompleted(target, d, isFlingToDelete, success); 3772 mDeferredAction = null; 3773 } 3774 }; 3775 return; 3776 } 3777 3778 boolean beingCalledAfterUninstall = mDeferredAction != null; 3779 3780 if (success && !(beingCalledAfterUninstall && !mUninstallSuccessful)) { 3781 if (target != this && mDragInfo != null) { 3782 removeWorkspaceItem(mDragInfo.cell); 3783 } 3784 } else if (mDragInfo != null) { 3785 final CellLayout cellLayout = mLauncher.getCellLayout( 3786 mDragInfo.container, mDragInfo.screenId); 3787 if (cellLayout != null) { 3788 cellLayout.onDropChild(mDragInfo.cell); 3789 } else if (LauncherAppState.isDogfoodBuild()) { 3790 throw new RuntimeException("Invalid state: cellLayout == null in " 3791 + "Workspace#onDropCompleted. Please file a bug. "); 3792 }; 3793 } 3794 if ((d.cancelled || (beingCalledAfterUninstall && !mUninstallSuccessful)) 3795 && mDragInfo.cell != null) { 3796 mDragInfo.cell.setVisibility(VISIBLE); 3797 } 3798 mDragOutline = null; 3799 mDragInfo = null; 3800 } 3801 3802 /** 3803 * For opposite operation. See {@link #addInScreen}. 3804 */ 3805 public void removeWorkspaceItem(View v) { 3806 CellLayout parentCell = getParentCellLayoutForView(v); 3807 if (parentCell != null) { 3808 parentCell.removeView(v); 3809 } else if (LauncherAppState.isDogfoodBuild()) { 3810 // When an app is uninstalled using the drop target, we wait until resume to remove 3811 // the icon. We also remove all the corresponding items from the workspace at 3812 // {@link Launcher#bindComponentsRemoved}. That call can come before or after 3813 // {@link Launcher#mOnResumeCallbacks} depending on how busy the worker thread is. 3814 Log.e(TAG, "mDragInfo.cell has null parent"); 3815 } 3816 if (v instanceof DropTarget) { 3817 mDragController.removeDropTarget((DropTarget) v); 3818 } 3819 } 3820 3821 @Override 3822 public void deferCompleteDropAfterUninstallActivity() { 3823 mDeferDropAfterUninstall = true; 3824 } 3825 3826 /// maybe move this into a smaller part 3827 @Override 3828 public void onUninstallActivityReturned(boolean success) { 3829 mDeferDropAfterUninstall = false; 3830 mUninstallSuccessful = success; 3831 if (mDeferredAction != null) { 3832 mDeferredAction.run(); 3833 } 3834 } 3835 3836 void updateItemLocationsInDatabase(CellLayout cl) { 3837 int count = cl.getShortcutsAndWidgets().getChildCount(); 3838 3839 long screenId = getIdForScreen(cl); 3840 int container = Favorites.CONTAINER_DESKTOP; 3841 3842 if (mLauncher.isHotseatLayout(cl)) { 3843 screenId = -1; 3844 container = Favorites.CONTAINER_HOTSEAT; 3845 } 3846 3847 for (int i = 0; i < count; i++) { 3848 View v = cl.getShortcutsAndWidgets().getChildAt(i); 3849 ItemInfo info = (ItemInfo) v.getTag(); 3850 // Null check required as the AllApps button doesn't have an item info 3851 if (info != null && info.requiresDbUpdate) { 3852 info.requiresDbUpdate = false; 3853 LauncherModel.modifyItemInDatabase(mLauncher, info, container, screenId, info.cellX, 3854 info.cellY, info.spanX, info.spanY); 3855 } 3856 } 3857 } 3858 3859 void saveWorkspaceToDb() { 3860 saveWorkspaceScreenToDb((CellLayout) mLauncher.getHotseat().getLayout()); 3861 int count = getChildCount(); 3862 for (int i = 0; i < count; i++) { 3863 CellLayout cl = (CellLayout) getChildAt(i); 3864 saveWorkspaceScreenToDb(cl); 3865 } 3866 } 3867 3868 void saveWorkspaceScreenToDb(CellLayout cl) { 3869 int count = cl.getShortcutsAndWidgets().getChildCount(); 3870 3871 long screenId = getIdForScreen(cl); 3872 int container = Favorites.CONTAINER_DESKTOP; 3873 3874 Hotseat hotseat = mLauncher.getHotseat(); 3875 if (mLauncher.isHotseatLayout(cl)) { 3876 screenId = -1; 3877 container = Favorites.CONTAINER_HOTSEAT; 3878 } 3879 3880 for (int i = 0; i < count; i++) { 3881 View v = cl.getShortcutsAndWidgets().getChildAt(i); 3882 ItemInfo info = (ItemInfo) v.getTag(); 3883 // Null check required as the AllApps button doesn't have an item info 3884 if (info != null) { 3885 int cellX = info.cellX; 3886 int cellY = info.cellY; 3887 if (container == Favorites.CONTAINER_HOTSEAT) { 3888 cellX = hotseat.getCellXFromOrder((int) info.screenId); 3889 cellY = hotseat.getCellYFromOrder((int) info.screenId); 3890 } 3891 LauncherModel.addItemToDatabase(mLauncher, info, container, screenId, cellX, cellY); 3892 } 3893 if (v instanceof FolderIcon) { 3894 FolderIcon fi = (FolderIcon) v; 3895 fi.getFolder().addItemLocationsInDatabase(); 3896 } 3897 } 3898 } 3899 3900 @Override 3901 public float getIntrinsicIconScaleFactor() { 3902 return 1f; 3903 } 3904 3905 @Override 3906 public boolean supportsFlingToDelete() { 3907 return true; 3908 } 3909 3910 @Override 3911 public boolean supportsAppInfoDropTarget() { 3912 return false; 3913 } 3914 3915 @Override 3916 public boolean supportsDeleteDropTarget() { 3917 return true; 3918 } 3919 3920 @Override 3921 public void onFlingToDelete(DragObject d, PointF vec) { 3922 // Do nothing 3923 } 3924 3925 @Override 3926 public void onFlingToDeleteCompleted() { 3927 // Do nothing 3928 } 3929 3930 public boolean isDropEnabled() { 3931 return true; 3932 } 3933 3934 @Override 3935 protected void dispatchRestoreInstanceState(SparseArray<Parcelable> container) { 3936 // We don't dispatch restoreInstanceState to our children using this code path. 3937 // Some pages will be restored immediately as their items are bound immediately, and 3938 // others we will need to wait until after their items are bound. 3939 mSavedStates = container; 3940 } 3941 3942 public void restoreInstanceStateForChild(int child) { 3943 if (mSavedStates != null) { 3944 mRestoredPages.add(child); 3945 CellLayout cl = (CellLayout) getChildAt(child); 3946 if (cl != null) { 3947 cl.restoreInstanceState(mSavedStates); 3948 } 3949 } 3950 } 3951 3952 public void restoreInstanceStateForRemainingPages() { 3953 int count = getChildCount(); 3954 for (int i = 0; i < count; i++) { 3955 if (!mRestoredPages.contains(i)) { 3956 restoreInstanceStateForChild(i); 3957 } 3958 } 3959 mRestoredPages.clear(); 3960 mSavedStates = null; 3961 } 3962 3963 @Override 3964 public void scrollLeft() { 3965 if (!workspaceInModalState() && !mIsSwitchingState) { 3966 super.scrollLeft(); 3967 } 3968 Folder openFolder = getOpenFolder(); 3969 if (openFolder != null) { 3970 openFolder.completeDragExit(); 3971 } 3972 } 3973 3974 @Override 3975 public void scrollRight() { 3976 if (!workspaceInModalState() && !mIsSwitchingState) { 3977 super.scrollRight(); 3978 } 3979 Folder openFolder = getOpenFolder(); 3980 if (openFolder != null) { 3981 openFolder.completeDragExit(); 3982 } 3983 } 3984 3985 @Override 3986 public boolean onEnterScrollArea(int x, int y, int direction) { 3987 // Ignore the scroll area if we are dragging over the hot seat 3988 boolean isPortrait = !mLauncher.getDeviceProfile().isLandscape; 3989 if (mLauncher.getHotseat() != null && isPortrait) { 3990 Rect r = new Rect(); 3991 mLauncher.getHotseat().getHitRect(r); 3992 if (r.contains(x, y)) { 3993 return false; 3994 } 3995 } 3996 3997 boolean result = false; 3998 if (!workspaceInModalState() && !mIsSwitchingState && getOpenFolder() == null) { 3999 mInScrollArea = true; 4000 4001 final int page = getNextPage() + 4002 (direction == DragController.SCROLL_LEFT ? -1 : 1); 4003 // We always want to exit the current layout to ensure parity of enter / exit 4004 setCurrentDropLayout(null); 4005 4006 if (0 <= page && page < getChildCount()) { 4007 // Ensure that we are not dragging over to the custom content screen 4008 if (getScreenIdForPageIndex(page) == CUSTOM_CONTENT_SCREEN_ID) { 4009 return false; 4010 } 4011 4012 CellLayout layout = (CellLayout) getChildAt(page); 4013 setCurrentDragOverlappingLayout(layout); 4014 4015 // Workspace is responsible for drawing the edge glow on adjacent pages, 4016 // so we need to redraw the workspace when this may have changed. 4017 invalidate(); 4018 result = true; 4019 } 4020 } 4021 return result; 4022 } 4023 4024 @Override 4025 public boolean onExitScrollArea() { 4026 boolean result = false; 4027 if (mInScrollArea) { 4028 invalidate(); 4029 CellLayout layout = getCurrentDropLayout(); 4030 setCurrentDropLayout(layout); 4031 setCurrentDragOverlappingLayout(layout); 4032 4033 result = true; 4034 mInScrollArea = false; 4035 } 4036 return result; 4037 } 4038 4039 private void onResetScrollArea() { 4040 setCurrentDragOverlappingLayout(null); 4041 mInScrollArea = false; 4042 } 4043 4044 /** 4045 * Returns a specific CellLayout 4046 */ 4047 CellLayout getParentCellLayoutForView(View v) { 4048 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 4049 for (CellLayout layout : layouts) { 4050 if (layout.getShortcutsAndWidgets().indexOfChild(v) > -1) { 4051 return layout; 4052 } 4053 } 4054 return null; 4055 } 4056 4057 /** 4058 * Returns a list of all the CellLayouts in the workspace. 4059 */ 4060 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 4061 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 4062 int screenCount = getChildCount(); 4063 for (int screen = 0; screen < screenCount; screen++) { 4064 layouts.add(((CellLayout) getChildAt(screen))); 4065 } 4066 if (mLauncher.getHotseat() != null) { 4067 layouts.add(mLauncher.getHotseat().getLayout()); 4068 } 4069 return layouts; 4070 } 4071 4072 /** 4073 * We should only use this to search for specific children. Do not use this method to modify 4074 * ShortcutsAndWidgetsContainer directly. Includes ShortcutAndWidgetContainers from 4075 * the hotseat and workspace pages 4076 */ 4077 ArrayList<ShortcutAndWidgetContainer> getAllShortcutAndWidgetContainers() { 4078 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 4079 new ArrayList<ShortcutAndWidgetContainer>(); 4080 int screenCount = getChildCount(); 4081 for (int screen = 0; screen < screenCount; screen++) { 4082 childrenLayouts.add(((CellLayout) getChildAt(screen)).getShortcutsAndWidgets()); 4083 } 4084 if (mLauncher.getHotseat() != null) { 4085 childrenLayouts.add(mLauncher.getHotseat().getLayout().getShortcutsAndWidgets()); 4086 } 4087 return childrenLayouts; 4088 } 4089 4090 public Folder getFolderForTag(final Object tag) { 4091 return (Folder) getFirstMatch(new ItemOperator() { 4092 4093 @Override 4094 public boolean evaluate(ItemInfo info, View v, View parent) { 4095 return (v instanceof Folder) && (((Folder) v).getInfo() == tag) 4096 && ((Folder) v).getInfo().opened; 4097 } 4098 }); 4099 } 4100 4101 public View getHomescreenIconByItemId(final long id) { 4102 return getFirstMatch(new ItemOperator() { 4103 4104 @Override 4105 public boolean evaluate(ItemInfo info, View v, View parent) { 4106 return info != null && info.id == id; 4107 } 4108 }); 4109 } 4110 4111 public View getViewForTag(final Object tag) { 4112 return getFirstMatch(new ItemOperator() { 4113 4114 @Override 4115 public boolean evaluate(ItemInfo info, View v, View parent) { 4116 return info == tag; 4117 } 4118 }); 4119 } 4120 4121 public LauncherAppWidgetHostView getWidgetForAppWidgetId(final int appWidgetId) { 4122 return (LauncherAppWidgetHostView) getFirstMatch(new ItemOperator() { 4123 4124 @Override 4125 public boolean evaluate(ItemInfo info, View v, View parent) { 4126 return (info instanceof LauncherAppWidgetInfo) && 4127 ((LauncherAppWidgetInfo) info).appWidgetId == appWidgetId; 4128 } 4129 }); 4130 } 4131 4132 private View getFirstMatch(final ItemOperator operator) { 4133 final View[] value = new View[1]; 4134 mapOverItems(MAP_NO_RECURSE, new ItemOperator() { 4135 @Override 4136 public boolean evaluate(ItemInfo info, View v, View parent) { 4137 if (operator.evaluate(info, v, parent)) { 4138 value[0] = v; 4139 return true; 4140 } 4141 return false; 4142 } 4143 }); 4144 return value[0]; 4145 } 4146 4147 void clearDropTargets() { 4148 mapOverItems(MAP_NO_RECURSE, new ItemOperator() { 4149 @Override 4150 public boolean evaluate(ItemInfo info, View v, View parent) { 4151 if (v instanceof DropTarget) { 4152 mDragController.removeDropTarget((DropTarget) v); 4153 } 4154 // not done, process all the shortcuts 4155 return false; 4156 } 4157 }); 4158 } 4159 4160 public void disableShortcutsByPackageName(final ArrayList<String> packages, 4161 final UserHandleCompat user, final int reason) { 4162 final HashSet<String> packageNames = new HashSet<String>(); 4163 packageNames.addAll(packages); 4164 4165 mapOverItems(MAP_RECURSE, new ItemOperator() { 4166 @Override 4167 public boolean evaluate(ItemInfo info, View v, View parent) { 4168 if (info instanceof ShortcutInfo && v instanceof BubbleTextView) { 4169 ShortcutInfo shortcutInfo = (ShortcutInfo) info; 4170 ComponentName cn = shortcutInfo.getTargetComponent(); 4171 if (user.equals(shortcutInfo.user) && cn != null 4172 && packageNames.contains(cn.getPackageName())) { 4173 shortcutInfo.isDisabled |= reason; 4174 BubbleTextView shortcut = (BubbleTextView) v; 4175 shortcut.applyFromShortcutInfo(shortcutInfo, mIconCache); 4176 4177 if (parent != null) { 4178 parent.invalidate(); 4179 } 4180 } 4181 } 4182 // process all the shortcuts 4183 return false; 4184 } 4185 }); 4186 } 4187 4188 // Removes ALL items that match a given package name, this is usually called when a package 4189 // has been removed and we want to remove all components (widgets, shortcuts, apps) that 4190 // belong to that package. 4191 void removeItemsByPackageName(final ArrayList<String> packages, final UserHandleCompat user) { 4192 final HashSet<String> packageNames = new HashSet<String>(); 4193 packageNames.addAll(packages); 4194 4195 // Filter out all the ItemInfos that this is going to affect 4196 final HashSet<ItemInfo> infos = new HashSet<ItemInfo>(); 4197 final HashSet<ComponentName> cns = new HashSet<ComponentName>(); 4198 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 4199 for (CellLayout layoutParent : cellLayouts) { 4200 ViewGroup layout = layoutParent.getShortcutsAndWidgets(); 4201 int childCount = layout.getChildCount(); 4202 for (int i = 0; i < childCount; ++i) { 4203 View view = layout.getChildAt(i); 4204 infos.add((ItemInfo) view.getTag()); 4205 } 4206 } 4207 LauncherModel.ItemInfoFilter filter = new LauncherModel.ItemInfoFilter() { 4208 @Override 4209 public boolean filterItem(ItemInfo parent, ItemInfo info, 4210 ComponentName cn) { 4211 if (packageNames.contains(cn.getPackageName()) 4212 && info.user.equals(user)) { 4213 cns.add(cn); 4214 return true; 4215 } 4216 return false; 4217 } 4218 }; 4219 LauncherModel.filterItemInfos(infos, filter); 4220 4221 // Remove the affected components 4222 removeItemsByComponentName(cns, user); 4223 } 4224 4225 /** 4226 * Removes items that match the item info specified. When applications are removed 4227 * as a part of an update, this is called to ensure that other widgets and application 4228 * shortcuts are not removed. 4229 */ 4230 void removeItemsByComponentName(final HashSet<ComponentName> componentNames, 4231 final UserHandleCompat user) { 4232 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 4233 for (final CellLayout layoutParent: cellLayouts) { 4234 final ViewGroup layout = layoutParent.getShortcutsAndWidgets(); 4235 4236 final HashMap<ItemInfo, View> children = new HashMap<ItemInfo, View>(); 4237 for (int j = 0; j < layout.getChildCount(); j++) { 4238 final View view = layout.getChildAt(j); 4239 children.put((ItemInfo) view.getTag(), view); 4240 } 4241 4242 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 4243 final HashMap<FolderInfo, ArrayList<ShortcutInfo>> folderAppsToRemove = 4244 new HashMap<FolderInfo, ArrayList<ShortcutInfo>>(); 4245 LauncherModel.ItemInfoFilter filter = new LauncherModel.ItemInfoFilter() { 4246 @Override 4247 public boolean filterItem(ItemInfo parent, ItemInfo info, 4248 ComponentName cn) { 4249 if (parent instanceof FolderInfo) { 4250 if (componentNames.contains(cn) && info.user.equals(user)) { 4251 FolderInfo folder = (FolderInfo) parent; 4252 ArrayList<ShortcutInfo> appsToRemove; 4253 if (folderAppsToRemove.containsKey(folder)) { 4254 appsToRemove = folderAppsToRemove.get(folder); 4255 } else { 4256 appsToRemove = new ArrayList<ShortcutInfo>(); 4257 folderAppsToRemove.put(folder, appsToRemove); 4258 } 4259 appsToRemove.add((ShortcutInfo) info); 4260 return true; 4261 } 4262 } else { 4263 if (componentNames.contains(cn) && info.user.equals(user)) { 4264 childrenToRemove.add(children.get(info)); 4265 return true; 4266 } 4267 } 4268 return false; 4269 } 4270 }; 4271 LauncherModel.filterItemInfos(children.keySet(), filter); 4272 4273 // Remove all the apps from their folders 4274 for (FolderInfo folder : folderAppsToRemove.keySet()) { 4275 ArrayList<ShortcutInfo> appsToRemove = folderAppsToRemove.get(folder); 4276 for (ShortcutInfo info : appsToRemove) { 4277 folder.remove(info); 4278 } 4279 } 4280 4281 // Remove all the other children 4282 for (View child : childrenToRemove) { 4283 // Note: We can not remove the view directly from CellLayoutChildren as this 4284 // does not re-mark the spaces as unoccupied. 4285 layoutParent.removeViewInLayout(child); 4286 if (child instanceof DropTarget) { 4287 mDragController.removeDropTarget((DropTarget) child); 4288 } 4289 } 4290 4291 if (childrenToRemove.size() > 0) { 4292 layout.requestLayout(); 4293 layout.invalidate(); 4294 } 4295 } 4296 4297 // Strip all the empty screens 4298 stripEmptyScreens(); 4299 } 4300 4301 interface ItemOperator { 4302 /** 4303 * Process the next itemInfo, possibly with side-effect on {@link ItemOperator#value}. 4304 * 4305 * @param info info for the shortcut 4306 * @param view view for the shortcut 4307 * @param parent containing folder, or null 4308 * @return true if done, false to continue the map 4309 */ 4310 public boolean evaluate(ItemInfo info, View view, View parent); 4311 } 4312 4313 /** 4314 * Map the operator over the shortcuts and widgets, return the first-non-null value. 4315 * 4316 * @param recurse true: iterate over folder children. false: op get the folders themselves. 4317 * @param op the operator to map over the shortcuts 4318 */ 4319 void mapOverItems(boolean recurse, ItemOperator op) { 4320 ArrayList<ShortcutAndWidgetContainer> containers = getAllShortcutAndWidgetContainers(); 4321 final int containerCount = containers.size(); 4322 for (int containerIdx = 0; containerIdx < containerCount; containerIdx++) { 4323 ShortcutAndWidgetContainer container = containers.get(containerIdx); 4324 // map over all the shortcuts on the workspace 4325 final int itemCount = container.getChildCount(); 4326 for (int itemIdx = 0; itemIdx < itemCount; itemIdx++) { 4327 View item = container.getChildAt(itemIdx); 4328 ItemInfo info = (ItemInfo) item.getTag(); 4329 if (recurse && info instanceof FolderInfo && item instanceof FolderIcon) { 4330 FolderIcon folder = (FolderIcon) item; 4331 ArrayList<View> folderChildren = folder.getFolder().getItemsInReadingOrder(); 4332 // map over all the children in the folder 4333 final int childCount = folderChildren.size(); 4334 for (int childIdx = 0; childIdx < childCount; childIdx++) { 4335 View child = folderChildren.get(childIdx); 4336 info = (ItemInfo) child.getTag(); 4337 if (op.evaluate(info, child, folder)) { 4338 return; 4339 } 4340 } 4341 } else { 4342 if (op.evaluate(info, item, null)) { 4343 return; 4344 } 4345 } 4346 } 4347 } 4348 } 4349 4350 void updateShortcuts(ArrayList<ShortcutInfo> shortcuts) { 4351 final HashSet<ShortcutInfo> updates = new HashSet<ShortcutInfo>(shortcuts); 4352 mapOverItems(MAP_RECURSE, new ItemOperator() { 4353 @Override 4354 public boolean evaluate(ItemInfo info, View v, View parent) { 4355 if (info instanceof ShortcutInfo && v instanceof BubbleTextView && 4356 updates.contains(info)) { 4357 ShortcutInfo si = (ShortcutInfo) info; 4358 BubbleTextView shortcut = (BubbleTextView) v; 4359 Drawable oldIcon = getTextViewIcon(shortcut); 4360 boolean oldPromiseState = (oldIcon instanceof PreloadIconDrawable) 4361 && ((PreloadIconDrawable) oldIcon).hasNotCompleted(); 4362 shortcut.applyFromShortcutInfo(si, mIconCache, 4363 si.isPromise() != oldPromiseState); 4364 4365 if (parent != null) { 4366 parent.invalidate(); 4367 } 4368 } 4369 // process all the shortcuts 4370 return false; 4371 } 4372 }); 4373 } 4374 4375 public void removeAbandonedPromise(String packageName, UserHandleCompat user) { 4376 ArrayList<String> packages = new ArrayList<String>(1); 4377 packages.add(packageName); 4378 LauncherModel.deletePackageFromDatabase(mLauncher, packageName, user); 4379 removeItemsByPackageName(packages, user); 4380 } 4381 4382 public void updateRestoreItems(final HashSet<ItemInfo> updates) { 4383 mapOverItems(MAP_RECURSE, new ItemOperator() { 4384 @Override 4385 public boolean evaluate(ItemInfo info, View v, View parent) { 4386 if (info instanceof ShortcutInfo && v instanceof BubbleTextView 4387 && updates.contains(info)) { 4388 ((BubbleTextView) v).applyState(false); 4389 } else if (v instanceof PendingAppWidgetHostView 4390 && info instanceof LauncherAppWidgetInfo 4391 && updates.contains(info)) { 4392 ((PendingAppWidgetHostView) v).applyState(); 4393 } 4394 // process all the shortcuts 4395 return false; 4396 } 4397 }); 4398 } 4399 4400 void widgetsRestored(ArrayList<LauncherAppWidgetInfo> changedInfo) { 4401 if (!changedInfo.isEmpty()) { 4402 DeferredWidgetRefresh widgetRefresh = new DeferredWidgetRefresh(changedInfo, 4403 mLauncher.getAppWidgetHost()); 4404 if (LauncherModel.getProviderInfo(getContext(), 4405 changedInfo.get(0).providerName, 4406 changedInfo.get(0).user) != null) { 4407 // Re-inflate the widgets which have changed status 4408 widgetRefresh.run(); 4409 } else { 4410 // widgetRefresh will automatically run when the packages are updated. 4411 // For now just update the progress bars 4412 for (LauncherAppWidgetInfo info : changedInfo) { 4413 if (info.hostView instanceof PendingAppWidgetHostView) { 4414 info.installProgress = 100; 4415 ((PendingAppWidgetHostView) info.hostView).applyState(); 4416 } 4417 } 4418 } 4419 } 4420 } 4421 4422 private void moveToScreen(int page, boolean animate) { 4423 if (!workspaceInModalState()) { 4424 if (animate) { 4425 snapToPage(page); 4426 } else { 4427 setCurrentPage(page); 4428 } 4429 } 4430 View child = getChildAt(page); 4431 if (child != null) { 4432 child.requestFocus(); 4433 } 4434 } 4435 4436 void moveToDefaultScreen(boolean animate) { 4437 moveToScreen(mDefaultPage, animate); 4438 } 4439 4440 void moveToCustomContentScreen(boolean animate) { 4441 if (hasCustomContent()) { 4442 int ccIndex = getPageIndexForScreenId(CUSTOM_CONTENT_SCREEN_ID); 4443 if (animate) { 4444 snapToPage(ccIndex); 4445 } else { 4446 setCurrentPage(ccIndex); 4447 } 4448 View child = getChildAt(ccIndex); 4449 if (child != null) { 4450 child.requestFocus(); 4451 } 4452 } 4453 exitWidgetResizeMode(); 4454 } 4455 4456 @Override 4457 protected PageIndicator.PageMarkerResources getPageIndicatorMarker(int pageIndex) { 4458 long screenId = getScreenIdForPageIndex(pageIndex); 4459 if (screenId == EXTRA_EMPTY_SCREEN_ID) { 4460 int count = mScreenOrder.size() - numCustomPages(); 4461 if (count > 1) { 4462 return new PageIndicator.PageMarkerResources(R.drawable.ic_pageindicator_current, 4463 R.drawable.ic_pageindicator_add); 4464 } 4465 } 4466 4467 return super.getPageIndicatorMarker(pageIndex); 4468 } 4469 4470 protected String getPageIndicatorDescription() { 4471 String settings = getResources().getString(R.string.settings_button_text); 4472 return getCurrentPageDescription() + ", " + settings; 4473 } 4474 4475 protected String getCurrentPageDescription() { 4476 if (hasCustomContent() && getNextPage() == 0) { 4477 return mCustomContentDescription; 4478 } 4479 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 4480 return getPageDescription(page); 4481 } 4482 4483 private String getPageDescription(int page) { 4484 int delta = numCustomPages(); 4485 int nScreens = getChildCount() - delta; 4486 int extraScreenId = mScreenOrder.indexOf(EXTRA_EMPTY_SCREEN_ID); 4487 if (extraScreenId >= 0 && nScreens > 1) { 4488 if (page == extraScreenId) { 4489 return getContext().getString(R.string.workspace_new_page); 4490 } 4491 nScreens--; 4492 } 4493 return String.format(getContext().getString(R.string.workspace_scroll_format), 4494 page + 1 - delta, nScreens); 4495 4496 } 4497 4498 public void getLocationInDragLayer(int[] loc) { 4499 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 4500 } 4501 4502 @Override 4503 public void fillInLaunchSourceData(View v, Bundle sourceData) { 4504 sourceData.putString(Stats.SOURCE_EXTRA_CONTAINER, Stats.CONTAINER_HOMESCREEN); 4505 sourceData.putInt(Stats.SOURCE_EXTRA_CONTAINER_PAGE, getCurrentPage()); 4506 } 4507 4508 /** 4509 * Used as a workaround to ensure that the AppWidgetService receives the 4510 * PACKAGE_ADDED broadcast before updating widgets. 4511 */ 4512 private class DeferredWidgetRefresh implements Runnable { 4513 private final ArrayList<LauncherAppWidgetInfo> mInfos; 4514 private final LauncherAppWidgetHost mHost; 4515 private final Handler mHandler; 4516 4517 private boolean mRefreshPending; 4518 4519 public DeferredWidgetRefresh(ArrayList<LauncherAppWidgetInfo> infos, 4520 LauncherAppWidgetHost host) { 4521 mInfos = infos; 4522 mHost = host; 4523 mHandler = new Handler(); 4524 mRefreshPending = true; 4525 4526 mHost.addProviderChangeListener(this); 4527 // Force refresh after 10 seconds, if we don't get the provider changed event. 4528 // This could happen when the provider is no longer available in the app. 4529 mHandler.postDelayed(this, 10000); 4530 } 4531 4532 @Override 4533 public void run() { 4534 mHost.removeProviderChangeListener(this); 4535 mHandler.removeCallbacks(this); 4536 4537 if (!mRefreshPending) { 4538 return; 4539 } 4540 4541 mRefreshPending = false; 4542 4543 for (LauncherAppWidgetInfo info : mInfos) { 4544 if (info.hostView instanceof PendingAppWidgetHostView) { 4545 // Remove and rebind the current widget, but don't delete it from the database 4546 PendingAppWidgetHostView view = (PendingAppWidgetHostView) info.hostView; 4547 mLauncher.removeItem(view, info, false /* deleteFromDb */); 4548 mLauncher.bindAppWidget(info); 4549 } 4550 } 4551 } 4552 } 4553} 4554