Workspace.java revision b740f59c7d572d54402e3a74fb2a23c0f1b1af48
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, 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, int hCell, int vCell, int hSpan, int vSpan) { 378 Rect r = new Rect(); 379 cl.cellToRect(hCell, vCell, hSpan, vSpan, r); 380 return r; 381 } 382 383 @Override 384 public void onDragStart(final DragSource source, Object info, int dragAction) { 385 if (ENFORCE_DRAG_EVENT_ORDER) { 386 enfoceDragParity("onDragStart", 0, 0); 387 } 388 389 mIsDragOccuring = true; 390 updateChildrenLayersEnabled(false); 391 mLauncher.lockScreenOrientation(); 392 mLauncher.onInteractionBegin(); 393 // Prevent any Un/InstallShortcutReceivers from updating the db while we are dragging 394 InstallShortcutReceiver.enableInstallQueue(); 395 396 if (mAddNewPageOnDrag) { 397 mDeferRemoveExtraEmptyScreen = false; 398 addExtraEmptyScreenOnDrag(); 399 } 400 } 401 402 public void setAddNewPageOnDrag(boolean addPage) { 403 mAddNewPageOnDrag = addPage; 404 } 405 406 public void deferRemoveExtraEmptyScreen() { 407 mDeferRemoveExtraEmptyScreen = true; 408 } 409 410 @Override 411 public void onDragEnd() { 412 if (ENFORCE_DRAG_EVENT_ORDER) { 413 enfoceDragParity("onDragEnd", 0, 0); 414 } 415 416 if (!mDeferRemoveExtraEmptyScreen) { 417 removeExtraEmptyScreen(true, mDragSourceInternal != null); 418 } 419 420 mIsDragOccuring = false; 421 updateChildrenLayersEnabled(false); 422 mLauncher.unlockScreenOrientation(false); 423 424 // Re-enable any Un/InstallShortcutReceiver and now process any queued items 425 InstallShortcutReceiver.disableAndFlushInstallQueue(getContext()); 426 427 mDragSourceInternal = null; 428 mLauncher.onInteractionEnd(); 429 } 430 431 /** 432 * Initializes various states for this workspace. 433 */ 434 protected void initWorkspace() { 435 mCurrentPage = mDefaultPage; 436 LauncherAppState app = LauncherAppState.getInstance(); 437 DeviceProfile grid = mLauncher.getDeviceProfile(); 438 mIconCache = app.getIconCache(); 439 setWillNotDraw(false); 440 setClipChildren(false); 441 setClipToPadding(false); 442 setChildrenDrawnWithCacheEnabled(true); 443 444 setMinScale(mOverviewModeShrinkFactor); 445 setupLayoutTransition(); 446 447 mWallpaperOffset = new WallpaperOffsetInterpolator(); 448 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 449 display.getSize(mDisplaySize); 450 451 mMaxDistanceForFolderCreation = (0.55f * grid.iconSizePx); 452 453 // Set the wallpaper dimensions when Launcher starts up 454 setWallpaperDimension(); 455 456 setEdgeGlowColor(getResources().getColor(R.color.workspace_edge_effect_color)); 457 } 458 459 private void setupLayoutTransition() { 460 // We want to show layout transitions when pages are deleted, to close the gap. 461 mLayoutTransition = new LayoutTransition(); 462 mLayoutTransition.enableTransitionType(LayoutTransition.DISAPPEARING); 463 mLayoutTransition.enableTransitionType(LayoutTransition.CHANGE_DISAPPEARING); 464 mLayoutTransition.disableTransitionType(LayoutTransition.APPEARING); 465 mLayoutTransition.disableTransitionType(LayoutTransition.CHANGE_APPEARING); 466 setLayoutTransition(mLayoutTransition); 467 } 468 469 void enableLayoutTransitions() { 470 setLayoutTransition(mLayoutTransition); 471 } 472 void disableLayoutTransitions() { 473 setLayoutTransition(null); 474 } 475 476 @Override 477 public void onChildViewAdded(View parent, View child) { 478 if (!(child instanceof CellLayout)) { 479 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 480 } 481 CellLayout cl = ((CellLayout) child); 482 cl.setOnInterceptTouchListener(this); 483 cl.setClickable(true); 484 cl.setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_NO); 485 super.onChildViewAdded(parent, child); 486 } 487 488 protected boolean shouldDrawChild(View child) { 489 final CellLayout cl = (CellLayout) child; 490 return super.shouldDrawChild(child) && 491 (mIsSwitchingState || 492 cl.getShortcutsAndWidgets().getAlpha() > 0 || 493 cl.getBackgroundAlpha() > 0); 494 } 495 496 /** 497 * @return The open folder on the current screen, or null if there is none 498 */ 499 public Folder getOpenFolder() { 500 DragLayer dragLayer = mLauncher.getDragLayer(); 501 int count = dragLayer.getChildCount(); 502 for (int i = 0; i < count; i++) { 503 View child = dragLayer.getChildAt(i); 504 if (child instanceof Folder) { 505 Folder folder = (Folder) child; 506 if (folder.getInfo().opened) 507 return folder; 508 } 509 } 510 return null; 511 } 512 513 boolean isTouchActive() { 514 return mTouchState != TOUCH_STATE_REST; 515 } 516 517 public void removeAllWorkspaceScreens() { 518 // Disable all layout transitions before removing all pages to ensure that we don't get the 519 // transition animations competing with us changing the scroll when we add pages or the 520 // custom content screen 521 disableLayoutTransitions(); 522 523 // Since we increment the current page when we call addCustomContentPage via bindScreens 524 // (and other places), we need to adjust the current page back when we clear the pages 525 if (hasCustomContent()) { 526 removeCustomContentPage(); 527 } 528 529 // Remove the pages and clear the screen models 530 removeAllViews(); 531 mScreenOrder.clear(); 532 mWorkspaceScreens.clear(); 533 534 // Re-enable the layout transitions 535 enableLayoutTransitions(); 536 } 537 538 public long insertNewWorkspaceScreenBeforeEmptyScreen(long screenId) { 539 // Find the index to insert this view into. If the empty screen exists, then 540 // insert it before that. 541 int insertIndex = mScreenOrder.indexOf(EXTRA_EMPTY_SCREEN_ID); 542 if (insertIndex < 0) { 543 insertIndex = mScreenOrder.size(); 544 } 545 return insertNewWorkspaceScreen(screenId, insertIndex); 546 } 547 548 public long insertNewWorkspaceScreen(long screenId) { 549 return insertNewWorkspaceScreen(screenId, getChildCount()); 550 } 551 552 public long insertNewWorkspaceScreen(long screenId, int insertIndex) { 553 if (mWorkspaceScreens.containsKey(screenId)) { 554 throw new RuntimeException("Screen id " + screenId + " already exists!"); 555 } 556 557 // Inflate the cell layout, but do not add it automatically so that we can get the newly 558 // created CellLayout. 559 CellLayout newScreen = (CellLayout) mLauncher.getLayoutInflater().inflate( 560 R.layout.workspace_screen, this, false /* attachToRoot */); 561 562 newScreen.setOnLongClickListener(mLongClickListener); 563 newScreen.setOnClickListener(mLauncher); 564 newScreen.setSoundEffectsEnabled(false); 565 mWorkspaceScreens.put(screenId, newScreen); 566 mScreenOrder.add(insertIndex, screenId); 567 addView(newScreen, insertIndex); 568 569 LauncherAccessibilityDelegate delegate = 570 LauncherAppState.getInstance().getAccessibilityDelegate(); 571 if (delegate != null && delegate.isInAccessibleDrag()) { 572 newScreen.enableAccessibleDrag(true, CellLayout.WORKSPACE_ACCESSIBILITY_DRAG); 573 } 574 return screenId; 575 } 576 577 public void createCustomContentContainer() { 578 CellLayout customScreen = (CellLayout) 579 mLauncher.getLayoutInflater().inflate(R.layout.workspace_screen, this, false); 580 customScreen.disableDragTarget(); 581 customScreen.disableJailContent(); 582 583 mWorkspaceScreens.put(CUSTOM_CONTENT_SCREEN_ID, customScreen); 584 mScreenOrder.add(0, CUSTOM_CONTENT_SCREEN_ID); 585 586 // We want no padding on the custom content 587 customScreen.setPadding(0, 0, 0, 0); 588 589 addFullScreenPage(customScreen); 590 591 // Ensure that the current page and default page are maintained. 592 mDefaultPage = mOriginalDefaultPage + 1; 593 594 // Update the custom content hint 595 if (mRestorePage != INVALID_RESTORE_PAGE) { 596 mRestorePage = mRestorePage + 1; 597 } else { 598 setCurrentPage(getCurrentPage() + 1); 599 } 600 } 601 602 public void removeCustomContentPage() { 603 CellLayout customScreen = getScreenWithId(CUSTOM_CONTENT_SCREEN_ID); 604 if (customScreen == null) { 605 throw new RuntimeException("Expected custom content screen to exist"); 606 } 607 608 mWorkspaceScreens.remove(CUSTOM_CONTENT_SCREEN_ID); 609 mScreenOrder.remove(CUSTOM_CONTENT_SCREEN_ID); 610 removeView(customScreen); 611 612 if (mCustomContentCallbacks != null) { 613 mCustomContentCallbacks.onScrollProgressChanged(0); 614 mCustomContentCallbacks.onHide(); 615 } 616 617 mCustomContentCallbacks = null; 618 619 // Ensure that the current page and default page are maintained. 620 mDefaultPage = mOriginalDefaultPage - 1; 621 622 // Update the custom content hint 623 if (mRestorePage != INVALID_RESTORE_PAGE) { 624 mRestorePage = mRestorePage - 1; 625 } else { 626 setCurrentPage(getCurrentPage() - 1); 627 } 628 } 629 630 public void addToCustomContentPage(View customContent, CustomContentCallbacks callbacks, 631 String description) { 632 if (getPageIndexForScreenId(CUSTOM_CONTENT_SCREEN_ID) < 0) { 633 throw new RuntimeException("Expected custom content screen to exist"); 634 } 635 636 // Add the custom content to the full screen custom page 637 CellLayout customScreen = getScreenWithId(CUSTOM_CONTENT_SCREEN_ID); 638 int spanX = customScreen.getCountX(); 639 int spanY = customScreen.getCountY(); 640 CellLayout.LayoutParams lp = new CellLayout.LayoutParams(0, 0, spanX, spanY); 641 lp.canReorder = false; 642 lp.isFullscreen = true; 643 if (customContent instanceof Insettable) { 644 ((Insettable)customContent).setInsets(mInsets); 645 } 646 647 // Verify that the child is removed from any existing parent. 648 if (customContent.getParent() instanceof ViewGroup) { 649 ViewGroup parent = (ViewGroup) customContent.getParent(); 650 parent.removeView(customContent); 651 } 652 customScreen.removeAllViews(); 653 customContent.setFocusable(true); 654 customContent.setOnKeyListener(new FullscreenKeyEventListener()); 655 customContent.setOnFocusChangeListener(mLauncher.mFocusHandler 656 .getHideIndicatorOnFocusListener()); 657 customScreen.addViewToCellLayout(customContent, 0, 0, lp, true); 658 mCustomContentDescription = description; 659 660 mCustomContentCallbacks = callbacks; 661 } 662 663 public void addExtraEmptyScreenOnDrag() { 664 boolean lastChildOnScreen = false; 665 boolean childOnFinalScreen = false; 666 667 // Cancel any pending removal of empty screen 668 mRemoveEmptyScreenRunnable = null; 669 670 if (mDragSourceInternal != null) { 671 if (mDragSourceInternal.getChildCount() == 1) { 672 lastChildOnScreen = true; 673 } 674 CellLayout cl = (CellLayout) mDragSourceInternal.getParent(); 675 if (indexOfChild(cl) == getChildCount() - 1) { 676 childOnFinalScreen = true; 677 } 678 } 679 680 // If this is the last item on the final screen 681 if (lastChildOnScreen && childOnFinalScreen) { 682 return; 683 } 684 if (!mWorkspaceScreens.containsKey(EXTRA_EMPTY_SCREEN_ID)) { 685 insertNewWorkspaceScreen(EXTRA_EMPTY_SCREEN_ID); 686 } 687 } 688 689 public boolean addExtraEmptyScreen() { 690 if (!mWorkspaceScreens.containsKey(EXTRA_EMPTY_SCREEN_ID)) { 691 insertNewWorkspaceScreen(EXTRA_EMPTY_SCREEN_ID); 692 return true; 693 } 694 return false; 695 } 696 697 private void convertFinalScreenToEmptyScreenIfNecessary() { 698 if (mLauncher.isWorkspaceLoading()) { 699 // Invalid and dangerous operation if workspace is loading 700 Launcher.addDumpLog(TAG, " - workspace loading, skip", true); 701 return; 702 } 703 704 if (hasExtraEmptyScreen() || mScreenOrder.size() == 0) return; 705 long finalScreenId = mScreenOrder.get(mScreenOrder.size() - 1); 706 707 if (finalScreenId == CUSTOM_CONTENT_SCREEN_ID) return; 708 CellLayout finalScreen = mWorkspaceScreens.get(finalScreenId); 709 710 // If the final screen is empty, convert it to the extra empty screen 711 if (finalScreen.getShortcutsAndWidgets().getChildCount() == 0 && 712 !finalScreen.isDropPending()) { 713 mWorkspaceScreens.remove(finalScreenId); 714 mScreenOrder.remove(finalScreenId); 715 716 // if this is the last non-custom content screen, convert it to the empty screen 717 mWorkspaceScreens.put(EXTRA_EMPTY_SCREEN_ID, finalScreen); 718 mScreenOrder.add(EXTRA_EMPTY_SCREEN_ID); 719 720 // Update the model if we have changed any screens 721 mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); 722 } 723 } 724 725 public void removeExtraEmptyScreen(final boolean animate, boolean stripEmptyScreens) { 726 removeExtraEmptyScreenDelayed(animate, null, 0, stripEmptyScreens); 727 } 728 729 public void removeExtraEmptyScreenDelayed(final boolean animate, final Runnable onComplete, 730 final int delay, final boolean stripEmptyScreens) { 731 if (mLauncher.isWorkspaceLoading()) { 732 // Don't strip empty screens if the workspace is still loading 733 Launcher.addDumpLog(TAG, " - workspace loading, skip", true); 734 return; 735 } 736 737 if (delay > 0) { 738 postDelayed(new Runnable() { 739 @Override 740 public void run() { 741 removeExtraEmptyScreenDelayed(animate, onComplete, 0, stripEmptyScreens); 742 } 743 }, delay); 744 return; 745 } 746 747 convertFinalScreenToEmptyScreenIfNecessary(); 748 if (hasExtraEmptyScreen()) { 749 int emptyIndex = mScreenOrder.indexOf(EXTRA_EMPTY_SCREEN_ID); 750 if (getNextPage() == emptyIndex) { 751 snapToPage(getNextPage() - 1, SNAP_OFF_EMPTY_SCREEN_DURATION); 752 fadeAndRemoveEmptyScreen(SNAP_OFF_EMPTY_SCREEN_DURATION, FADE_EMPTY_SCREEN_DURATION, 753 onComplete, stripEmptyScreens); 754 } else { 755 snapToPage(getNextPage(), 0); 756 fadeAndRemoveEmptyScreen(0, FADE_EMPTY_SCREEN_DURATION, 757 onComplete, stripEmptyScreens); 758 } 759 return; 760 } else if (stripEmptyScreens) { 761 // If we're not going to strip the empty screens after removing 762 // the extra empty screen, do it right away. 763 stripEmptyScreens(); 764 } 765 766 if (onComplete != null) { 767 onComplete.run(); 768 } 769 } 770 771 private void fadeAndRemoveEmptyScreen(int delay, int duration, final Runnable onComplete, 772 final boolean stripEmptyScreens) { 773 // XXX: Do we need to update LM workspace screens below? 774 PropertyValuesHolder alpha = PropertyValuesHolder.ofFloat("alpha", 0f); 775 PropertyValuesHolder bgAlpha = PropertyValuesHolder.ofFloat("backgroundAlpha", 0f); 776 777 final CellLayout cl = mWorkspaceScreens.get(EXTRA_EMPTY_SCREEN_ID); 778 779 mRemoveEmptyScreenRunnable = new Runnable() { 780 @Override 781 public void run() { 782 if (hasExtraEmptyScreen()) { 783 mWorkspaceScreens.remove(EXTRA_EMPTY_SCREEN_ID); 784 mScreenOrder.remove(EXTRA_EMPTY_SCREEN_ID); 785 removeView(cl); 786 if (stripEmptyScreens) { 787 stripEmptyScreens(); 788 } 789 } 790 } 791 }; 792 793 ObjectAnimator oa = ObjectAnimator.ofPropertyValuesHolder(cl, alpha, bgAlpha); 794 oa.setDuration(duration); 795 oa.setStartDelay(delay); 796 oa.addListener(new AnimatorListenerAdapter() { 797 @Override 798 public void onAnimationEnd(Animator animation) { 799 if (mRemoveEmptyScreenRunnable != null) { 800 mRemoveEmptyScreenRunnable.run(); 801 } 802 if (onComplete != null) { 803 onComplete.run(); 804 } 805 } 806 }); 807 oa.start(); 808 } 809 810 public boolean hasExtraEmptyScreen() { 811 int nScreens = getChildCount(); 812 nScreens = nScreens - numCustomPages(); 813 return mWorkspaceScreens.containsKey(EXTRA_EMPTY_SCREEN_ID) && nScreens > 1; 814 } 815 816 public long commitExtraEmptyScreen() { 817 if (mLauncher.isWorkspaceLoading()) { 818 // Invalid and dangerous operation if workspace is loading 819 Launcher.addDumpLog(TAG, " - workspace loading, skip", true); 820 return -1; 821 } 822 823 int index = getPageIndexForScreenId(EXTRA_EMPTY_SCREEN_ID); 824 CellLayout cl = mWorkspaceScreens.get(EXTRA_EMPTY_SCREEN_ID); 825 mWorkspaceScreens.remove(EXTRA_EMPTY_SCREEN_ID); 826 mScreenOrder.remove(EXTRA_EMPTY_SCREEN_ID); 827 828 long newId = LauncherAppState.getLauncherProvider().generateNewScreenId(); 829 mWorkspaceScreens.put(newId, cl); 830 mScreenOrder.add(newId); 831 832 // Update the page indicator marker 833 if (getPageIndicator() != null) { 834 getPageIndicator().updateMarker(index, getPageIndicatorMarker(index)); 835 } 836 837 // Update the model for the new screen 838 mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); 839 840 return newId; 841 } 842 843 public CellLayout getScreenWithId(long screenId) { 844 CellLayout layout = mWorkspaceScreens.get(screenId); 845 return layout; 846 } 847 848 public long getIdForScreen(CellLayout layout) { 849 int index = mWorkspaceScreens.indexOfValue(layout); 850 if (index != -1) { 851 return mWorkspaceScreens.keyAt(index); 852 } 853 return -1; 854 } 855 856 public int getPageIndexForScreenId(long screenId) { 857 return indexOfChild(mWorkspaceScreens.get(screenId)); 858 } 859 860 public long getScreenIdForPageIndex(int index) { 861 if (0 <= index && index < mScreenOrder.size()) { 862 return mScreenOrder.get(index); 863 } 864 return -1; 865 } 866 867 public ArrayList<Long> getScreenOrder() { 868 return mScreenOrder; 869 } 870 871 public void stripEmptyScreens() { 872 if (mLauncher.isWorkspaceLoading()) { 873 // Don't strip empty screens if the workspace is still loading. 874 // This is dangerous and can result in data loss. 875 Launcher.addDumpLog(TAG, " - workspace loading, skip", true); 876 return; 877 } 878 879 if (isPageMoving()) { 880 mStripScreensOnPageStopMoving = true; 881 return; 882 } 883 884 int currentPage = getNextPage(); 885 ArrayList<Long> removeScreens = new ArrayList<Long>(); 886 int total = mWorkspaceScreens.size(); 887 for (int i = 0; i < total; i++) { 888 long id = mWorkspaceScreens.keyAt(i); 889 CellLayout cl = mWorkspaceScreens.valueAt(i); 890 if (id >= 0 && cl.getShortcutsAndWidgets().getChildCount() == 0) { 891 removeScreens.add(id); 892 } 893 } 894 895 LauncherAccessibilityDelegate delegate = 896 LauncherAppState.getInstance().getAccessibilityDelegate(); 897 898 // We enforce at least one page to add new items to. In the case that we remove the last 899 // such screen, we convert the last screen to the empty screen 900 int minScreens = 1 + numCustomPages(); 901 902 int pageShift = 0; 903 for (Long id: removeScreens) { 904 CellLayout cl = mWorkspaceScreens.get(id); 905 mWorkspaceScreens.remove(id); 906 mScreenOrder.remove(id); 907 908 if (getChildCount() > minScreens) { 909 if (indexOfChild(cl) < currentPage) { 910 pageShift++; 911 } 912 913 if (delegate != null && delegate.isInAccessibleDrag()) { 914 cl.enableAccessibleDrag(false, CellLayout.WORKSPACE_ACCESSIBILITY_DRAG); 915 } 916 917 removeView(cl); 918 } else { 919 // if this is the last non-custom content screen, convert it to the empty screen 920 mRemoveEmptyScreenRunnable = null; 921 mWorkspaceScreens.put(EXTRA_EMPTY_SCREEN_ID, cl); 922 mScreenOrder.add(EXTRA_EMPTY_SCREEN_ID); 923 } 924 } 925 926 if (!removeScreens.isEmpty()) { 927 // Update the model if we have changed any screens 928 mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); 929 } 930 931 if (pageShift >= 0) { 932 setCurrentPage(currentPage - pageShift); 933 } 934 } 935 936 // See implementation for parameter definition. 937 void addInScreen(View child, long container, long screenId, 938 int x, int y, int spanX, int spanY) { 939 addInScreen(child, container, screenId, x, y, spanX, spanY, false, false); 940 } 941 942 // At bind time, we use the rank (screenId) to compute x and y for hotseat items. 943 // See implementation for parameter definition. 944 void addInScreenFromBind(View child, long container, long screenId, int x, int y, 945 int spanX, int spanY) { 946 addInScreen(child, container, screenId, x, y, spanX, spanY, false, true); 947 } 948 949 // See implementation for parameter definition. 950 void addInScreen(View child, long container, long screenId, int x, int y, int spanX, int spanY, 951 boolean insert) { 952 addInScreen(child, container, screenId, x, y, spanX, spanY, insert, false); 953 } 954 955 /** 956 * Adds the specified child in the specified screen. The position and dimension of 957 * the child are defined by x, y, spanX and spanY. 958 * 959 * @param child The child to add in one of the workspace's screens. 960 * @param screenId The screen in which to add the child. 961 * @param x The X position of the child in the screen's grid. 962 * @param y The Y position of the child in the screen's grid. 963 * @param spanX The number of cells spanned horizontally by the child. 964 * @param spanY The number of cells spanned vertically by the child. 965 * @param insert When true, the child is inserted at the beginning of the children list. 966 * @param computeXYFromRank When true, we use the rank (stored in screenId) to compute 967 * the x and y position in which to place hotseat items. Otherwise 968 * we use the x and y position to compute the rank. 969 */ 970 void addInScreen(View child, long container, long screenId, int x, int y, int spanX, int spanY, 971 boolean insert, boolean computeXYFromRank) { 972 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 973 if (getScreenWithId(screenId) == null) { 974 Log.e(TAG, "Skipping child, screenId " + screenId + " not found"); 975 // DEBUGGING - Print out the stack trace to see where we are adding from 976 new Throwable().printStackTrace(); 977 return; 978 } 979 } 980 if (screenId == EXTRA_EMPTY_SCREEN_ID) { 981 // This should never happen 982 throw new RuntimeException("Screen id should not be EXTRA_EMPTY_SCREEN_ID"); 983 } 984 985 final CellLayout layout; 986 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 987 layout = mLauncher.getHotseat().getLayout(); 988 child.setOnKeyListener(new HotseatIconKeyEventListener()); 989 990 // Hide folder title in the hotseat 991 if (child instanceof FolderIcon) { 992 ((FolderIcon) child).setTextVisible(false); 993 } 994 995 if (computeXYFromRank) { 996 x = mLauncher.getHotseat().getCellXFromOrder((int) screenId); 997 y = mLauncher.getHotseat().getCellYFromOrder((int) screenId); 998 } else { 999 screenId = mLauncher.getHotseat().getOrderInHotseat(x, y); 1000 } 1001 } else { 1002 // Show folder title if not in the hotseat 1003 if (child instanceof FolderIcon) { 1004 ((FolderIcon) child).setTextVisible(true); 1005 } 1006 layout = getScreenWithId(screenId); 1007 child.setOnKeyListener(new IconKeyEventListener()); 1008 } 1009 1010 ViewGroup.LayoutParams genericLp = child.getLayoutParams(); 1011 CellLayout.LayoutParams lp; 1012 if (genericLp == null || !(genericLp instanceof CellLayout.LayoutParams)) { 1013 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 1014 } else { 1015 lp = (CellLayout.LayoutParams) genericLp; 1016 lp.cellX = x; 1017 lp.cellY = y; 1018 lp.cellHSpan = spanX; 1019 lp.cellVSpan = spanY; 1020 } 1021 1022 if (spanX < 0 && spanY < 0) { 1023 lp.isLockedToGrid = false; 1024 } 1025 1026 // Get the canonical child id to uniquely represent this view in this screen 1027 ItemInfo info = (ItemInfo) child.getTag(); 1028 int childId = mLauncher.getViewIdForItem(info); 1029 1030 boolean markCellsAsOccupied = !(child instanceof Folder); 1031 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 1032 // TODO: This branch occurs when the workspace is adding views 1033 // outside of the defined grid 1034 // maybe we should be deleting these items from the LauncherModel? 1035 Launcher.addDumpLog(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout", true); 1036 } 1037 1038 if (!(child instanceof Folder)) { 1039 child.setHapticFeedbackEnabled(false); 1040 child.setOnLongClickListener(mLongClickListener); 1041 } 1042 if (child instanceof DropTarget) { 1043 mDragController.addDropTarget((DropTarget) child); 1044 } 1045 } 1046 1047 /** 1048 * Called directly from a CellLayout (not by the framework), after we've been added as a 1049 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 1050 * that it should intercept touch events, which is not something that is normally supported. 1051 */ 1052 @SuppressLint("ClickableViewAccessibility") 1053 @Override 1054 public boolean onTouch(View v, MotionEvent event) { 1055 return (workspaceInModalState() || !isFinishedSwitchingState()) 1056 || (!workspaceInModalState() && indexOfChild(v) != mCurrentPage); 1057 } 1058 1059 public boolean isSwitchingState() { 1060 return mIsSwitchingState; 1061 } 1062 1063 /** This differs from isSwitchingState in that we take into account how far the transition 1064 * has completed. */ 1065 public boolean isFinishedSwitchingState() { 1066 return !mIsSwitchingState || (mTransitionProgress > 0.5f); 1067 } 1068 1069 protected void onWindowVisibilityChanged (int visibility) { 1070 mLauncher.onWindowVisibilityChanged(visibility); 1071 } 1072 1073 @Override 1074 public boolean dispatchUnhandledMove(View focused, int direction) { 1075 if (workspaceInModalState() || !isFinishedSwitchingState()) { 1076 // when the home screens are shrunken, shouldn't allow side-scrolling 1077 return false; 1078 } 1079 return super.dispatchUnhandledMove(focused, direction); 1080 } 1081 1082 @Override 1083 public boolean onInterceptTouchEvent(MotionEvent ev) { 1084 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 1085 case MotionEvent.ACTION_DOWN: 1086 mXDown = ev.getX(); 1087 mYDown = ev.getY(); 1088 mTouchDownTime = System.currentTimeMillis(); 1089 break; 1090 case MotionEvent.ACTION_POINTER_UP: 1091 case MotionEvent.ACTION_UP: 1092 if (mTouchState == TOUCH_STATE_REST) { 1093 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 1094 if (currentPage != null) { 1095 onWallpaperTap(ev); 1096 } 1097 } 1098 } 1099 return super.onInterceptTouchEvent(ev); 1100 } 1101 1102 @Override 1103 public boolean onGenericMotionEvent(MotionEvent event) { 1104 // Ignore pointer scroll events if the custom content doesn't allow scrolling. 1105 if ((getScreenIdForPageIndex(getCurrentPage()) == CUSTOM_CONTENT_SCREEN_ID) 1106 && (mCustomContentCallbacks != null) 1107 && !mCustomContentCallbacks.isScrollingAllowed()) { 1108 return false; 1109 } 1110 return super.onGenericMotionEvent(event); 1111 } 1112 1113 protected void reinflateWidgetsIfNecessary() { 1114 final int clCount = getChildCount(); 1115 for (int i = 0; i < clCount; i++) { 1116 CellLayout cl = (CellLayout) getChildAt(i); 1117 ShortcutAndWidgetContainer swc = cl.getShortcutsAndWidgets(); 1118 final int itemCount = swc.getChildCount(); 1119 for (int j = 0; j < itemCount; j++) { 1120 View v = swc.getChildAt(j); 1121 1122 if (v != null && v.getTag() instanceof LauncherAppWidgetInfo) { 1123 LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) v.getTag(); 1124 LauncherAppWidgetHostView lahv = (LauncherAppWidgetHostView) info.hostView; 1125 if (lahv != null && lahv.isReinflateRequired()) { 1126 // Remove and rebind the current widget (which was inflated in the wrong 1127 // orientation), but don't delete it from the database 1128 mLauncher.removeItem(lahv, info, false /* deleteFromDb */); 1129 mLauncher.bindAppWidget(info); 1130 } 1131 } 1132 } 1133 } 1134 } 1135 1136 @Override 1137 protected void determineScrollingStart(MotionEvent ev) { 1138 if (!isFinishedSwitchingState()) return; 1139 1140 float deltaX = ev.getX() - mXDown; 1141 float absDeltaX = Math.abs(deltaX); 1142 float absDeltaY = Math.abs(ev.getY() - mYDown); 1143 1144 if (Float.compare(absDeltaX, 0f) == 0) return; 1145 1146 float slope = absDeltaY / absDeltaX; 1147 float theta = (float) Math.atan(slope); 1148 1149 if (absDeltaX > mTouchSlop || absDeltaY > mTouchSlop) { 1150 cancelCurrentPageLongPress(); 1151 } 1152 1153 boolean passRightSwipesToCustomContent = 1154 (mTouchDownTime - mCustomContentShowTime) > CUSTOM_CONTENT_GESTURE_DELAY; 1155 1156 boolean swipeInIgnoreDirection = mIsRtl ? deltaX < 0 : deltaX > 0; 1157 boolean onCustomContentScreen = 1158 getScreenIdForPageIndex(getCurrentPage()) == CUSTOM_CONTENT_SCREEN_ID; 1159 if (swipeInIgnoreDirection && onCustomContentScreen && passRightSwipesToCustomContent) { 1160 // Pass swipes to the right to the custom content page. 1161 return; 1162 } 1163 1164 if (onCustomContentScreen && (mCustomContentCallbacks != null) 1165 && !mCustomContentCallbacks.isScrollingAllowed()) { 1166 // Don't allow workspace scrolling if the current custom content screen doesn't allow 1167 // scrolling. 1168 return; 1169 } 1170 1171 if (theta > MAX_SWIPE_ANGLE) { 1172 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 1173 return; 1174 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 1175 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 1176 // increase the touch slop to make it harder to begin scrolling the workspace. This 1177 // results in vertically scrolling widgets to more easily. The higher the angle, the 1178 // more we increase touch slop. 1179 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 1180 float extraRatio = (float) 1181 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 1182 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 1183 } else { 1184 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 1185 super.determineScrollingStart(ev); 1186 } 1187 } 1188 1189 protected void onPageBeginMoving() { 1190 super.onPageBeginMoving(); 1191 1192 if (isHardwareAccelerated()) { 1193 updateChildrenLayersEnabled(false); 1194 } else { 1195 if (mNextPage != INVALID_PAGE) { 1196 // we're snapping to a particular screen 1197 enableChildrenCache(mCurrentPage, mNextPage); 1198 } else { 1199 // this is when user is actively dragging a particular screen, they might 1200 // swipe it either left or right (but we won't advance by more than one screen) 1201 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 1202 } 1203 } 1204 } 1205 1206 protected void onPageEndMoving() { 1207 super.onPageEndMoving(); 1208 1209 if (isHardwareAccelerated()) { 1210 updateChildrenLayersEnabled(false); 1211 } else { 1212 clearChildrenCache(); 1213 } 1214 1215 if (mDragController.isDragging()) { 1216 if (workspaceInModalState()) { 1217 // If we are in springloaded mode, then force an event to check if the current touch 1218 // is under a new page (to scroll to) 1219 mDragController.forceTouchMove(); 1220 } 1221 } 1222 1223 if (mDelayedResizeRunnable != null) { 1224 mDelayedResizeRunnable.run(); 1225 mDelayedResizeRunnable = null; 1226 } 1227 1228 if (mDelayedSnapToPageRunnable != null) { 1229 mDelayedSnapToPageRunnable.run(); 1230 mDelayedSnapToPageRunnable = null; 1231 } 1232 if (mStripScreensOnPageStopMoving) { 1233 stripEmptyScreens(); 1234 mStripScreensOnPageStopMoving = false; 1235 } 1236 1237 if (mShouldSendPageSettled) { 1238 mLauncherOverlay.onScrollSettled(); 1239 mShouldSendPageSettled = false; 1240 } 1241 } 1242 1243 protected void onScrollInteractionBegin() { 1244 super.onScrollInteractionEnd(); 1245 mScrollInteractionBegan = true; 1246 } 1247 1248 protected void onScrollInteractionEnd() { 1249 super.onScrollInteractionEnd(); 1250 mScrollInteractionBegan = false; 1251 if (mStartedSendingScrollEvents) { 1252 mStartedSendingScrollEvents = false; 1253 mLauncherOverlay.onScrollInteractionEnd(); 1254 } 1255 } 1256 1257 public void setLauncherOverlay(LauncherOverlay overlay) { 1258 mLauncherOverlay = overlay; 1259 } 1260 1261 @Override 1262 protected void overScroll(float amount) { 1263 boolean shouldOverScroll = (amount <= 0 && (!hasCustomContent() || mIsRtl)) || 1264 (amount >= 0 && (!hasCustomContent() || !mIsRtl)); 1265 1266 boolean shouldScrollOverlay = mLauncherOverlay != null && 1267 ((amount <= 0 && !mIsRtl) || (amount >= 0 && mIsRtl)); 1268 1269 boolean shouldZeroOverlay = mLauncherOverlay != null && mLastOverlaySroll != 0 && 1270 ((amount >= 0 && !mIsRtl) || (amount <= 0 && mIsRtl)); 1271 1272 if (shouldScrollOverlay) { 1273 if (!mStartedSendingScrollEvents && mScrollInteractionBegan) { 1274 mStartedSendingScrollEvents = true; 1275 mLauncherOverlay.onScrollInteractionBegin(); 1276 mShouldSendPageSettled = true; 1277 } 1278 int screenSize = getViewportWidth(); 1279 float f = (amount / screenSize); 1280 1281 int progress = (int) Math.abs((f * 100)); 1282 1283 mLastOverlaySroll = progress; 1284 mLauncherOverlay.onScrollChange(progress, mIsRtl); 1285 } else if (shouldOverScroll) { 1286 dampedOverScroll(amount); 1287 } 1288 1289 if (shouldZeroOverlay) { 1290 mLauncherOverlay.onScrollChange(0, mIsRtl); 1291 } 1292 } 1293 1294 @Override 1295 protected void getEdgeVerticalPostion(int[] pos) { 1296 View child = getChildAt(getPageCount() - 1); 1297 pos[0] = child.getTop(); 1298 pos[1] = child.getBottom(); 1299 } 1300 1301 @Override 1302 protected void notifyPageSwitchListener() { 1303 super.notifyPageSwitchListener(); 1304 1305 if (hasCustomContent() && getNextPage() == 0 && !mCustomContentShowing) { 1306 mCustomContentShowing = true; 1307 if (mCustomContentCallbacks != null) { 1308 mCustomContentCallbacks.onShow(false); 1309 mCustomContentShowTime = System.currentTimeMillis(); 1310 } 1311 } else if (hasCustomContent() && getNextPage() != 0 && mCustomContentShowing) { 1312 mCustomContentShowing = false; 1313 if (mCustomContentCallbacks != null) { 1314 mCustomContentCallbacks.onHide(); 1315 } 1316 } 1317 } 1318 1319 protected CustomContentCallbacks getCustomContentCallbacks() { 1320 return mCustomContentCallbacks; 1321 } 1322 1323 protected void setWallpaperDimension() { 1324 new AsyncTask<Void, Void, Void>() { 1325 public Void doInBackground(Void ... args) { 1326 String spKey = LauncherFiles.WALLPAPER_CROP_PREFERENCES_KEY; 1327 SharedPreferences sp = 1328 mLauncher.getSharedPreferences(spKey, Context.MODE_MULTI_PROCESS); 1329 WallpaperUtils.suggestWallpaperDimension(mLauncher.getResources(), 1330 sp, mLauncher.getWindowManager(), mWallpaperManager, 1331 mLauncher.overrideWallpaperDimensions()); 1332 return null; 1333 } 1334 }.executeOnExecutor(Utilities.THREAD_POOL_EXECUTOR); 1335 } 1336 1337 protected void snapToPage(int whichPage, Runnable r) { 1338 snapToPage(whichPage, SLOW_PAGE_SNAP_ANIMATION_DURATION, r); 1339 } 1340 1341 protected void snapToPage(int whichPage, int duration, Runnable r) { 1342 if (mDelayedSnapToPageRunnable != null) { 1343 mDelayedSnapToPageRunnable.run(); 1344 } 1345 mDelayedSnapToPageRunnable = r; 1346 snapToPage(whichPage, duration); 1347 } 1348 1349 public void snapToScreenId(long screenId) { 1350 snapToScreenId(screenId, null); 1351 } 1352 1353 protected void snapToScreenId(long screenId, Runnable r) { 1354 snapToPage(getPageIndexForScreenId(screenId), r); 1355 } 1356 1357 class WallpaperOffsetInterpolator implements Choreographer.FrameCallback { 1358 float mFinalOffset = 0.0f; 1359 float mCurrentOffset = 0.5f; // to force an initial update 1360 boolean mWaitingForUpdate; 1361 Choreographer mChoreographer; 1362 Interpolator mInterpolator; 1363 boolean mAnimating; 1364 long mAnimationStartTime; 1365 float mAnimationStartOffset; 1366 private final int ANIMATION_DURATION = 250; 1367 // Don't use all the wallpaper for parallax until you have at least this many pages 1368 private final int MIN_PARALLAX_PAGE_SPAN = 3; 1369 int mNumScreens; 1370 1371 public WallpaperOffsetInterpolator() { 1372 mChoreographer = Choreographer.getInstance(); 1373 mInterpolator = new DecelerateInterpolator(1.5f); 1374 } 1375 1376 @Override 1377 public void doFrame(long frameTimeNanos) { 1378 updateOffset(false); 1379 } 1380 1381 private void updateOffset(boolean force) { 1382 if (mWaitingForUpdate || force) { 1383 mWaitingForUpdate = false; 1384 if (computeScrollOffset() && mWindowToken != null) { 1385 try { 1386 mWallpaperManager.setWallpaperOffsets(mWindowToken, 1387 mWallpaperOffset.getCurrX(), 0.5f); 1388 setWallpaperOffsetSteps(); 1389 } catch (IllegalArgumentException e) { 1390 Log.e(TAG, "Error updating wallpaper offset: " + e); 1391 } 1392 } 1393 } 1394 } 1395 1396 public boolean computeScrollOffset() { 1397 final float oldOffset = mCurrentOffset; 1398 if (mAnimating) { 1399 long durationSinceAnimation = System.currentTimeMillis() - mAnimationStartTime; 1400 float t0 = durationSinceAnimation / (float) ANIMATION_DURATION; 1401 float t1 = mInterpolator.getInterpolation(t0); 1402 mCurrentOffset = mAnimationStartOffset + 1403 (mFinalOffset - mAnimationStartOffset) * t1; 1404 mAnimating = durationSinceAnimation < ANIMATION_DURATION; 1405 } else { 1406 mCurrentOffset = mFinalOffset; 1407 } 1408 1409 if (Math.abs(mCurrentOffset - mFinalOffset) > 0.0000001f) { 1410 scheduleUpdate(); 1411 } 1412 if (Math.abs(oldOffset - mCurrentOffset) > 0.0000001f) { 1413 return true; 1414 } 1415 return false; 1416 } 1417 1418 public float wallpaperOffsetForScroll(int scroll) { 1419 // TODO: do different behavior if it's a live wallpaper? 1420 // Don't use up all the wallpaper parallax until you have at least 1421 // MIN_PARALLAX_PAGE_SPAN pages 1422 int numScrollingPages = getNumScreensExcludingEmptyAndCustom(); 1423 int parallaxPageSpan; 1424 if (mWallpaperIsLiveWallpaper) { 1425 parallaxPageSpan = numScrollingPages - 1; 1426 } else { 1427 parallaxPageSpan = Math.max(MIN_PARALLAX_PAGE_SPAN, numScrollingPages - 1); 1428 } 1429 mNumPagesForWallpaperParallax = parallaxPageSpan; 1430 1431 if (getChildCount() <= 1) { 1432 if (mIsRtl) { 1433 return 1 - 1.0f/mNumPagesForWallpaperParallax; 1434 } 1435 return 0; 1436 } 1437 1438 // Exclude the leftmost page 1439 int emptyExtraPages = numEmptyScreensToIgnore(); 1440 int firstIndex = numCustomPages(); 1441 // Exclude the last extra empty screen (if we have > MIN_PARALLAX_PAGE_SPAN pages) 1442 int lastIndex = getChildCount() - 1 - emptyExtraPages; 1443 if (mIsRtl) { 1444 int temp = firstIndex; 1445 firstIndex = lastIndex; 1446 lastIndex = temp; 1447 } 1448 1449 int firstPageScrollX = getScrollForPage(firstIndex); 1450 int scrollRange = getScrollForPage(lastIndex) - firstPageScrollX; 1451 if (scrollRange == 0) { 1452 return 0; 1453 } else { 1454 // Sometimes the left parameter of the pages is animated during a layout transition; 1455 // this parameter offsets it to keep the wallpaper from animating as well 1456 int adjustedScroll = 1457 scroll - firstPageScrollX - getLayoutTransitionOffsetForPage(0); 1458 float offset = Math.min(1, adjustedScroll / (float) scrollRange); 1459 offset = Math.max(0, offset); 1460 1461 // On RTL devices, push the wallpaper offset to the right if we don't have enough 1462 // pages (ie if numScrollingPages < MIN_PARALLAX_PAGE_SPAN) 1463 if (!mWallpaperIsLiveWallpaper && numScrollingPages < MIN_PARALLAX_PAGE_SPAN 1464 && mIsRtl) { 1465 return offset * (parallaxPageSpan - numScrollingPages + 1) / parallaxPageSpan; 1466 } 1467 return offset * (numScrollingPages - 1) / parallaxPageSpan; 1468 } 1469 } 1470 1471 private float wallpaperOffsetForCurrentScroll() { 1472 return wallpaperOffsetForScroll(getScrollX()); 1473 } 1474 1475 private int numEmptyScreensToIgnore() { 1476 int numScrollingPages = getChildCount() - numCustomPages(); 1477 if (numScrollingPages >= MIN_PARALLAX_PAGE_SPAN && hasExtraEmptyScreen()) { 1478 return 1; 1479 } else { 1480 return 0; 1481 } 1482 } 1483 1484 private int getNumScreensExcludingEmptyAndCustom() { 1485 int numScrollingPages = getChildCount() - numEmptyScreensToIgnore() - numCustomPages(); 1486 return numScrollingPages; 1487 } 1488 1489 public void syncWithScroll() { 1490 float offset = wallpaperOffsetForCurrentScroll(); 1491 mWallpaperOffset.setFinalX(offset); 1492 updateOffset(true); 1493 } 1494 1495 public float getCurrX() { 1496 return mCurrentOffset; 1497 } 1498 1499 public float getFinalX() { 1500 return mFinalOffset; 1501 } 1502 1503 private void animateToFinal() { 1504 mAnimating = true; 1505 mAnimationStartOffset = mCurrentOffset; 1506 mAnimationStartTime = System.currentTimeMillis(); 1507 } 1508 1509 private void setWallpaperOffsetSteps() { 1510 // Set wallpaper offset steps (1 / (number of screens - 1)) 1511 float xOffset = 1.0f / mNumPagesForWallpaperParallax; 1512 if (xOffset != mLastSetWallpaperOffsetSteps) { 1513 mWallpaperManager.setWallpaperOffsetSteps(xOffset, 1.0f); 1514 mLastSetWallpaperOffsetSteps = xOffset; 1515 } 1516 } 1517 1518 public void setFinalX(float x) { 1519 scheduleUpdate(); 1520 mFinalOffset = Math.max(0f, Math.min(x, 1.0f)); 1521 if (getNumScreensExcludingEmptyAndCustom() != mNumScreens) { 1522 if (mNumScreens > 0) { 1523 // Don't animate if we're going from 0 screens 1524 animateToFinal(); 1525 } 1526 mNumScreens = getNumScreensExcludingEmptyAndCustom(); 1527 } 1528 } 1529 1530 private void scheduleUpdate() { 1531 if (!mWaitingForUpdate) { 1532 mChoreographer.postFrameCallback(this); 1533 mWaitingForUpdate = true; 1534 } 1535 } 1536 1537 public void jumpToFinal() { 1538 mCurrentOffset = mFinalOffset; 1539 } 1540 } 1541 1542 @Override 1543 public void computeScroll() { 1544 super.computeScroll(); 1545 mWallpaperOffset.syncWithScroll(); 1546 } 1547 1548 @Override 1549 protected void determineScrollingStart(MotionEvent ev, float touchSlopScale) { 1550 if (!isSwitchingState()) { 1551 super.determineScrollingStart(ev, touchSlopScale); 1552 } 1553 } 1554 1555 @Override 1556 public void announceForAccessibility(CharSequence text) { 1557 // Don't announce if apps is on top of us. 1558 if (!mLauncher.isAppsViewVisible()) { 1559 super.announceForAccessibility(text); 1560 } 1561 } 1562 1563 public void showOutlinesTemporarily() { 1564 if (!mIsPageMoving && !isTouchActive()) { 1565 snapToPage(mCurrentPage); 1566 } 1567 } 1568 1569 float backgroundAlphaInterpolator(float r) { 1570 float pivotA = 0.1f; 1571 float pivotB = 0.4f; 1572 if (r < pivotA) { 1573 return 0; 1574 } else if (r > pivotB) { 1575 return 1.0f; 1576 } else { 1577 return (r - pivotA)/(pivotB - pivotA); 1578 } 1579 } 1580 1581 private void updatePageAlphaValues(int screenCenter) { 1582 if (mWorkspaceFadeInAdjacentScreens && 1583 !workspaceInModalState() && 1584 !mIsSwitchingState) { 1585 for (int i = numCustomPages(); i < getChildCount(); i++) { 1586 CellLayout child = (CellLayout) getChildAt(i); 1587 if (child != null) { 1588 float scrollProgress = getScrollProgress(screenCenter, child, i); 1589 float alpha = 1 - Math.abs(scrollProgress); 1590 child.getShortcutsAndWidgets().setAlpha(alpha); 1591 } 1592 } 1593 } 1594 } 1595 1596 @TargetApi(Build.VERSION_CODES.LOLLIPOP) 1597 @Override 1598 public void enableAccessibleDrag(boolean enable) { 1599 for (int i = 0; i < getChildCount(); i++) { 1600 CellLayout child = (CellLayout) getChildAt(i); 1601 child.enableAccessibleDrag(enable, CellLayout.WORKSPACE_ACCESSIBILITY_DRAG); 1602 } 1603 1604 if (enable) { 1605 // We need to allow our individual children to become click handlers in this case 1606 setOnClickListener(null); 1607 } else { 1608 // Reset our click listener 1609 setOnClickListener(mLauncher); 1610 } 1611 mLauncher.getSearchDropTargetBar().enableAccessibleDrag(enable); 1612 mLauncher.getHotseat().getLayout() 1613 .enableAccessibleDrag(enable, CellLayout.WORKSPACE_ACCESSIBILITY_DRAG); 1614 } 1615 1616 public boolean hasCustomContent() { 1617 return (mScreenOrder.size() > 0 && mScreenOrder.get(0) == CUSTOM_CONTENT_SCREEN_ID); 1618 } 1619 1620 public int numCustomPages() { 1621 return hasCustomContent() ? 1 : 0; 1622 } 1623 1624 public boolean isOnOrMovingToCustomContent() { 1625 return hasCustomContent() && getNextPage() == 0 && mRestorePage == INVALID_RESTORE_PAGE; 1626 } 1627 1628 private void updateStateForCustomContent(int screenCenter) { 1629 float translationX = 0; 1630 float progress = 0; 1631 if (hasCustomContent()) { 1632 int index = mScreenOrder.indexOf(CUSTOM_CONTENT_SCREEN_ID); 1633 1634 int scrollDelta = getScrollX() - getScrollForPage(index) - 1635 getLayoutTransitionOffsetForPage(index); 1636 float scrollRange = getScrollForPage(index + 1) - getScrollForPage(index); 1637 translationX = scrollRange - scrollDelta; 1638 progress = (scrollRange - scrollDelta) / scrollRange; 1639 1640 if (mIsRtl) { 1641 translationX = Math.min(0, translationX); 1642 } else { 1643 translationX = Math.max(0, translationX); 1644 } 1645 progress = Math.max(0, progress); 1646 } 1647 1648 if (Float.compare(progress, mLastCustomContentScrollProgress) == 0) return; 1649 1650 CellLayout cc = mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID); 1651 if (progress > 0 && cc.getVisibility() != VISIBLE && !workspaceInModalState()) { 1652 cc.setVisibility(VISIBLE); 1653 } 1654 1655 mLastCustomContentScrollProgress = progress; 1656 1657 // We should only update the drag layer background alpha if we are not in all apps or the 1658 // widgets tray 1659 if (mState == State.NORMAL) { 1660 mLauncher.getDragLayer().setBackgroundAlpha(progress == 1 ? 0 : progress * 0.8f); 1661 } 1662 1663 if (mLauncher.getHotseat() != null) { 1664 mLauncher.getHotseat().setTranslationX(translationX); 1665 } 1666 1667 if (getPageIndicator() != null) { 1668 getPageIndicator().setTranslationX(translationX); 1669 } 1670 1671 if (mCustomContentCallbacks != null) { 1672 mCustomContentCallbacks.onScrollProgressChanged(progress); 1673 } 1674 } 1675 1676 @Override 1677 protected OnClickListener getPageIndicatorClickListener() { 1678 AccessibilityManager am = (AccessibilityManager) 1679 getContext().getSystemService(Context.ACCESSIBILITY_SERVICE); 1680 if (!am.isTouchExplorationEnabled()) { 1681 return null; 1682 } 1683 OnClickListener listener = new OnClickListener() { 1684 @Override 1685 public void onClick(View arg0) { 1686 mLauncher.showOverviewMode(true); 1687 } 1688 }; 1689 return listener; 1690 } 1691 1692 @Override 1693 protected void screenScrolled(int screenCenter) { 1694 updatePageAlphaValues(screenCenter); 1695 updateStateForCustomContent(screenCenter); 1696 enableHwLayersOnVisiblePages(); 1697 } 1698 1699 protected void onAttachedToWindow() { 1700 super.onAttachedToWindow(); 1701 mWindowToken = getWindowToken(); 1702 computeScroll(); 1703 mDragController.setWindowToken(mWindowToken); 1704 } 1705 1706 protected void onDetachedFromWindow() { 1707 super.onDetachedFromWindow(); 1708 mWindowToken = null; 1709 } 1710 1711 protected void onResume() { 1712 if (getPageIndicator() != null) { 1713 // In case accessibility state has changed, we need to perform this on every 1714 // attach to window 1715 OnClickListener listener = getPageIndicatorClickListener(); 1716 if (listener != null) { 1717 getPageIndicator().setOnClickListener(listener); 1718 } 1719 } 1720 1721 // Update wallpaper dimensions if they were changed since last onResume 1722 // (we also always set the wallpaper dimensions in the constructor) 1723 if (LauncherAppState.getInstance().hasWallpaperChangedSinceLastCheck()) { 1724 setWallpaperDimension(); 1725 } 1726 mWallpaperIsLiveWallpaper = mWallpaperManager.getWallpaperInfo() != null; 1727 // Force the wallpaper offset steps to be set again, because another app might have changed 1728 // them 1729 mLastSetWallpaperOffsetSteps = 0f; 1730 } 1731 1732 @Override 1733 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1734 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1735 mWallpaperOffset.syncWithScroll(); 1736 mWallpaperOffset.jumpToFinal(); 1737 } 1738 super.onLayout(changed, left, top, right, bottom); 1739 } 1740 1741 @Override 1742 protected void onDraw(Canvas canvas) { 1743 super.onDraw(canvas); 1744 1745 // Call back to LauncherModel to finish binding after the first draw 1746 post(mBindPages); 1747 } 1748 1749 @Override 1750 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1751 if (!mLauncher.isAppsViewVisible()) { 1752 final Folder openFolder = getOpenFolder(); 1753 if (openFolder != null) { 1754 return openFolder.requestFocus(direction, previouslyFocusedRect); 1755 } else { 1756 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1757 } 1758 } 1759 return false; 1760 } 1761 1762 @Override 1763 public int getDescendantFocusability() { 1764 if (workspaceInModalState()) { 1765 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1766 } 1767 return super.getDescendantFocusability(); 1768 } 1769 1770 @Override 1771 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1772 if (!mLauncher.isAppsViewVisible()) { 1773 final Folder openFolder = getOpenFolder(); 1774 if (openFolder != null) { 1775 openFolder.addFocusables(views, direction); 1776 } else { 1777 super.addFocusables(views, direction, focusableMode); 1778 } 1779 } 1780 } 1781 1782 public boolean workspaceInModalState() { 1783 return mState != State.NORMAL; 1784 } 1785 1786 void enableChildrenCache(int fromPage, int toPage) { 1787 if (fromPage > toPage) { 1788 final int temp = fromPage; 1789 fromPage = toPage; 1790 toPage = temp; 1791 } 1792 1793 final int screenCount = getChildCount(); 1794 1795 fromPage = Math.max(fromPage, 0); 1796 toPage = Math.min(toPage, screenCount - 1); 1797 1798 for (int i = fromPage; i <= toPage; i++) { 1799 final CellLayout layout = (CellLayout) getChildAt(i); 1800 layout.setChildrenDrawnWithCacheEnabled(true); 1801 layout.setChildrenDrawingCacheEnabled(true); 1802 } 1803 } 1804 1805 void clearChildrenCache() { 1806 final int screenCount = getChildCount(); 1807 for (int i = 0; i < screenCount; i++) { 1808 final CellLayout layout = (CellLayout) getChildAt(i); 1809 layout.setChildrenDrawnWithCacheEnabled(false); 1810 // In software mode, we don't want the items to continue to be drawn into bitmaps 1811 if (!isHardwareAccelerated()) { 1812 layout.setChildrenDrawingCacheEnabled(false); 1813 } 1814 } 1815 } 1816 1817 @Thunk void updateChildrenLayersEnabled(boolean force) { 1818 boolean small = mState == State.OVERVIEW || mIsSwitchingState; 1819 boolean enableChildrenLayers = force || small || mAnimatingViewIntoPlace || isPageMoving(); 1820 1821 if (enableChildrenLayers != mChildrenLayersEnabled) { 1822 mChildrenLayersEnabled = enableChildrenLayers; 1823 if (mChildrenLayersEnabled) { 1824 enableHwLayersOnVisiblePages(); 1825 } else { 1826 for (int i = 0; i < getPageCount(); i++) { 1827 final CellLayout cl = (CellLayout) getChildAt(i); 1828 cl.enableHardwareLayer(false); 1829 } 1830 } 1831 } 1832 } 1833 1834 private void enableHwLayersOnVisiblePages() { 1835 if (mChildrenLayersEnabled) { 1836 final int screenCount = getChildCount(); 1837 getVisiblePages(mTempVisiblePagesRange); 1838 int leftScreen = mTempVisiblePagesRange[0]; 1839 int rightScreen = mTempVisiblePagesRange[1]; 1840 if (leftScreen == rightScreen) { 1841 // make sure we're caching at least two pages always 1842 if (rightScreen < screenCount - 1) { 1843 rightScreen++; 1844 } else if (leftScreen > 0) { 1845 leftScreen--; 1846 } 1847 } 1848 1849 final CellLayout customScreen = mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID); 1850 for (int i = 0; i < screenCount; i++) { 1851 final CellLayout layout = (CellLayout) getPageAt(i); 1852 1853 // enable layers between left and right screen inclusive, except for the 1854 // customScreen, which may animate its content during transitions. 1855 boolean enableLayer = layout != customScreen && 1856 leftScreen <= i && i <= rightScreen && shouldDrawChild(layout); 1857 layout.enableHardwareLayer(enableLayer); 1858 } 1859 } 1860 } 1861 1862 public void buildPageHardwareLayers() { 1863 // force layers to be enabled just for the call to buildLayer 1864 updateChildrenLayersEnabled(true); 1865 if (getWindowToken() != null) { 1866 final int childCount = getChildCount(); 1867 for (int i = 0; i < childCount; i++) { 1868 CellLayout cl = (CellLayout) getChildAt(i); 1869 cl.buildHardwareLayer(); 1870 } 1871 } 1872 updateChildrenLayersEnabled(false); 1873 } 1874 1875 protected void onWallpaperTap(MotionEvent ev) { 1876 final int[] position = mTempCell; 1877 getLocationOnScreen(position); 1878 1879 int pointerIndex = ev.getActionIndex(); 1880 position[0] += (int) ev.getX(pointerIndex); 1881 position[1] += (int) ev.getY(pointerIndex); 1882 1883 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1884 ev.getAction() == MotionEvent.ACTION_UP 1885 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1886 position[0], position[1], 0, null); 1887 } 1888 1889 /* 1890 * 1891 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1892 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1893 * 1894 * These methods mark the appropriate pages as accepting drops (which alters their visual 1895 * appearance). 1896 * 1897 */ 1898 private static Rect getDrawableBounds(Drawable d) { 1899 Rect bounds = new Rect(); 1900 d.copyBounds(bounds); 1901 if (bounds.width() == 0 || bounds.height() == 0) { 1902 bounds.set(0, 0, d.getIntrinsicWidth(), d.getIntrinsicHeight()); 1903 } else { 1904 bounds.offsetTo(0, 0); 1905 } 1906 if (d instanceof PreloadIconDrawable) { 1907 int inset = -((PreloadIconDrawable) d).getOutset(); 1908 bounds.inset(inset, inset); 1909 } 1910 return bounds; 1911 } 1912 1913 public void onExternalDragStartedWithItem(View v) { 1914 // Compose a drag bitmap with the view scaled to the icon size 1915 DeviceProfile grid = mLauncher.getDeviceProfile(); 1916 int iconSize = grid.iconSizePx; 1917 int bmpWidth = v.getMeasuredWidth(); 1918 int bmpHeight = v.getMeasuredHeight(); 1919 1920 // If this is a text view, use its drawable instead 1921 if (v instanceof TextView) { 1922 Drawable d = getTextViewIcon((TextView) v); 1923 Rect bounds = getDrawableBounds(d); 1924 bmpWidth = bounds.width(); 1925 bmpHeight = bounds.height(); 1926 } 1927 1928 // Compose the bitmap to create the icon from 1929 Bitmap b = Bitmap.createBitmap(bmpWidth, bmpHeight, 1930 Bitmap.Config.ARGB_8888); 1931 mCanvas.setBitmap(b); 1932 drawDragView(v, mCanvas, 0); 1933 mCanvas.setBitmap(null); 1934 1935 // The outline is used to visualize where the item will land if dropped 1936 mDragOutline = createDragOutline(b, DRAG_BITMAP_PADDING, iconSize, iconSize, true); 1937 } 1938 1939 public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, boolean clipAlpha) { 1940 int[] size = estimateItemSize(info, false); 1941 1942 // The outline is used to visualize where the item will land if dropped 1943 mDragOutline = createDragOutline(b, DRAG_BITMAP_PADDING, size[0], size[1], clipAlpha); 1944 } 1945 1946 public void exitWidgetResizeMode() { 1947 DragLayer dragLayer = mLauncher.getDragLayer(); 1948 dragLayer.clearAllResizeFrames(); 1949 } 1950 1951 @Override 1952 protected void getFreeScrollPageRange(int[] range) { 1953 getOverviewModePages(range); 1954 } 1955 1956 private void getOverviewModePages(int[] range) { 1957 int start = numCustomPages(); 1958 int end = getChildCount() - 1; 1959 1960 range[0] = Math.max(0, Math.min(start, getChildCount() - 1)); 1961 range[1] = Math.max(0, end); 1962 } 1963 1964 public void onStartReordering() { 1965 super.onStartReordering(); 1966 // Reordering handles its own animations, disable the automatic ones. 1967 disableLayoutTransitions(); 1968 } 1969 1970 public void onEndReordering() { 1971 super.onEndReordering(); 1972 1973 if (mLauncher.isWorkspaceLoading()) { 1974 // Invalid and dangerous operation if workspace is loading 1975 return; 1976 } 1977 1978 mScreenOrder.clear(); 1979 int count = getChildCount(); 1980 for (int i = 0; i < count; i++) { 1981 CellLayout cl = ((CellLayout) getChildAt(i)); 1982 mScreenOrder.add(getIdForScreen(cl)); 1983 } 1984 1985 mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); 1986 1987 // Re-enable auto layout transitions for page deletion. 1988 enableLayoutTransitions(); 1989 } 1990 1991 public boolean isInOverviewMode() { 1992 return mState == State.OVERVIEW; 1993 } 1994 1995 int getOverviewModeTranslationY() { 1996 DeviceProfile grid = mLauncher.getDeviceProfile(); 1997 Rect workspacePadding = grid.getWorkspacePadding(Utilities.isRtl(getResources())); 1998 int overviewButtonBarHeight = grid.getOverviewModeButtonBarHeight(); 1999 2000 int scaledHeight = (int) (mOverviewModeShrinkFactor * getNormalChildHeight()); 2001 int workspaceTop = mInsets.top + workspacePadding.top; 2002 int workspaceBottom = getViewportHeight() - mInsets.bottom - workspacePadding.bottom; 2003 int overviewTop = mInsets.top; 2004 int overviewBottom = getViewportHeight() - mInsets.bottom - overviewButtonBarHeight; 2005 int workspaceOffsetTopEdge = workspaceTop + ((workspaceBottom - workspaceTop) - scaledHeight) / 2; 2006 int overviewOffsetTopEdge = overviewTop + (overviewBottom - overviewTop - scaledHeight) / 2; 2007 return -workspaceOffsetTopEdge + overviewOffsetTopEdge; 2008 } 2009 2010 /** 2011 * Sets the current workspace {@link State}, returning an animation transitioning the workspace 2012 * to that new state. 2013 */ 2014 public Animator setStateWithAnimation(State toState, int toPage, boolean animated, 2015 HashMap<View, Integer> layerViews) { 2016 // Create the animation to the new state 2017 Animator workspaceAnim = mStateTransitionAnimation.getAnimationToState(mState, 2018 toState, toPage, animated, layerViews); 2019 2020 // Update the current state 2021 mState = toState; 2022 updateAccessibilityFlags(); 2023 2024 return workspaceAnim; 2025 } 2026 2027 State getState() { 2028 return mState; 2029 } 2030 2031 public void updateAccessibilityFlags() { 2032 if (Utilities.ATLEAST_LOLLIPOP) { 2033 int total = getPageCount(); 2034 for (int i = numCustomPages(); i < total; i++) { 2035 updateAccessibilityFlags((CellLayout) getPageAt(i), i); 2036 } 2037 setImportantForAccessibility((mState == State.NORMAL || mState == State.OVERVIEW) 2038 ? IMPORTANT_FOR_ACCESSIBILITY_AUTO 2039 : IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS); 2040 } else { 2041 int accessible = mState == State.NORMAL ? 2042 IMPORTANT_FOR_ACCESSIBILITY_AUTO : 2043 IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS; 2044 setImportantForAccessibility(accessible); 2045 } 2046 } 2047 2048 private void updateAccessibilityFlags(CellLayout page, int pageNo) { 2049 if (mState == State.OVERVIEW) { 2050 page.setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_YES); 2051 page.getShortcutsAndWidgets().setImportantForAccessibility( 2052 IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS); 2053 page.setContentDescription(getPageDescription(pageNo)); 2054 2055 if (mPagesAccessibilityDelegate == null) { 2056 mPagesAccessibilityDelegate = new OverviewScreenAccessibilityDelegate(this); 2057 } 2058 page.setAccessibilityDelegate(mPagesAccessibilityDelegate); 2059 } else { 2060 int accessible = mState == State.NORMAL ? 2061 IMPORTANT_FOR_ACCESSIBILITY_AUTO : 2062 IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS; 2063 page.setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_NO); 2064 page.getShortcutsAndWidgets().setImportantForAccessibility(accessible); 2065 page.setContentDescription(null); 2066 page.setAccessibilityDelegate(null); 2067 } 2068 } 2069 2070 @Override 2071 public void onLauncherTransitionPrepare(Launcher l, boolean animated, boolean toWorkspace) { 2072 mIsSwitchingState = true; 2073 mTransitionProgress = 0; 2074 2075 // Invalidate here to ensure that the pages are rendered during the state change transition. 2076 invalidate(); 2077 2078 updateChildrenLayersEnabled(false); 2079 hideCustomContentIfNecessary(); 2080 } 2081 2082 @Override 2083 public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) { 2084 } 2085 2086 @Override 2087 public void onLauncherTransitionStep(Launcher l, float t) { 2088 mTransitionProgress = t; 2089 } 2090 2091 @Override 2092 public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) { 2093 mIsSwitchingState = false; 2094 updateChildrenLayersEnabled(false); 2095 showCustomContentIfNecessary(); 2096 } 2097 2098 void updateCustomContentVisibility() { 2099 int visibility = mState == Workspace.State.NORMAL ? VISIBLE : INVISIBLE; 2100 if (hasCustomContent()) { 2101 mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID).setVisibility(visibility); 2102 } 2103 } 2104 2105 void showCustomContentIfNecessary() { 2106 boolean show = mState == Workspace.State.NORMAL; 2107 if (show && hasCustomContent()) { 2108 mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID).setVisibility(VISIBLE); 2109 } 2110 } 2111 2112 void hideCustomContentIfNecessary() { 2113 boolean hide = mState != Workspace.State.NORMAL; 2114 if (hide && hasCustomContent()) { 2115 disableLayoutTransitions(); 2116 mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID).setVisibility(INVISIBLE); 2117 enableLayoutTransitions(); 2118 } 2119 } 2120 2121 /** 2122 * Returns the drawable for the given text view. 2123 */ 2124 public static Drawable getTextViewIcon(TextView tv) { 2125 final Drawable[] drawables = tv.getCompoundDrawables(); 2126 for (int i = 0; i < drawables.length; i++) { 2127 if (drawables[i] != null) { 2128 return drawables[i]; 2129 } 2130 } 2131 return null; 2132 } 2133 2134 /** 2135 * Draw the View v into the given Canvas. 2136 * 2137 * @param v the view to draw 2138 * @param destCanvas the canvas to draw on 2139 * @param padding the horizontal and vertical padding to use when drawing 2140 */ 2141 private static void drawDragView(View v, Canvas destCanvas, int padding) { 2142 final Rect clipRect = sTempRect; 2143 v.getDrawingRect(clipRect); 2144 2145 boolean textVisible = false; 2146 2147 destCanvas.save(); 2148 if (v instanceof TextView) { 2149 Drawable d = getTextViewIcon((TextView) v); 2150 Rect bounds = getDrawableBounds(d); 2151 clipRect.set(0, 0, bounds.width() + padding, bounds.height() + padding); 2152 destCanvas.translate(padding / 2 - bounds.left, padding / 2 - bounds.top); 2153 d.draw(destCanvas); 2154 } else { 2155 if (v instanceof FolderIcon) { 2156 // For FolderIcons the text can bleed into the icon area, and so we need to 2157 // hide the text completely (which can't be achieved by clipping). 2158 if (((FolderIcon) v).getTextVisible()) { 2159 ((FolderIcon) v).setTextVisible(false); 2160 textVisible = true; 2161 } 2162 } 2163 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 2164 destCanvas.clipRect(clipRect, Op.REPLACE); 2165 v.draw(destCanvas); 2166 2167 // Restore text visibility of FolderIcon if necessary 2168 if (textVisible) { 2169 ((FolderIcon) v).setTextVisible(true); 2170 } 2171 } 2172 destCanvas.restore(); 2173 } 2174 2175 /** 2176 * Returns a new bitmap to show when the given View is being dragged around. 2177 * Responsibility for the bitmap is transferred to the caller. 2178 * @param expectedPadding padding to add to the drag view. If a different padding was used 2179 * its value will be changed 2180 */ 2181 public Bitmap createDragBitmap(View v, AtomicInteger expectedPadding) { 2182 Bitmap b; 2183 2184 int padding = expectedPadding.get(); 2185 if (v instanceof TextView) { 2186 Drawable d = getTextViewIcon((TextView) v); 2187 Rect bounds = getDrawableBounds(d); 2188 b = Bitmap.createBitmap(bounds.width() + padding, 2189 bounds.height() + padding, Bitmap.Config.ARGB_8888); 2190 expectedPadding.set(padding - bounds.left - bounds.top); 2191 } else { 2192 b = Bitmap.createBitmap( 2193 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 2194 } 2195 2196 mCanvas.setBitmap(b); 2197 drawDragView(v, mCanvas, padding); 2198 mCanvas.setBitmap(null); 2199 2200 return b; 2201 } 2202 2203 /** 2204 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2205 * Responsibility for the bitmap is transferred to the caller. 2206 */ 2207 private Bitmap createDragOutline(View v, int padding) { 2208 final int outlineColor = getResources().getColor(R.color.outline_color); 2209 final Bitmap b = Bitmap.createBitmap( 2210 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 2211 2212 mCanvas.setBitmap(b); 2213 drawDragView(v, mCanvas, padding); 2214 mOutlineHelper.applyExpensiveOutlineWithBlur(b, mCanvas, outlineColor, outlineColor); 2215 mCanvas.setBitmap(null); 2216 return b; 2217 } 2218 2219 /** 2220 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2221 * Responsibility for the bitmap is transferred to the caller. 2222 */ 2223 private Bitmap createDragOutline(Bitmap orig, int padding, int w, int h, 2224 boolean clipAlpha) { 2225 final int outlineColor = getResources().getColor(R.color.outline_color); 2226 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 2227 mCanvas.setBitmap(b); 2228 2229 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 2230 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 2231 (h - padding) / (float) orig.getHeight()); 2232 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 2233 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 2234 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 2235 2236 // center the image 2237 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 2238 2239 mCanvas.drawBitmap(orig, src, dst, null); 2240 mOutlineHelper.applyExpensiveOutlineWithBlur(b, mCanvas, outlineColor, outlineColor, 2241 clipAlpha); 2242 mCanvas.setBitmap(null); 2243 2244 return b; 2245 } 2246 2247 public void startDrag(CellLayout.CellInfo cellInfo) { 2248 startDrag(cellInfo, false); 2249 } 2250 2251 @Override 2252 public void startDrag(CellLayout.CellInfo cellInfo, boolean accessible) { 2253 View child = cellInfo.cell; 2254 2255 // Make sure the drag was started by a long press as opposed to a long click. 2256 if (!child.isInTouchMode()) { 2257 return; 2258 } 2259 2260 mDragInfo = cellInfo; 2261 child.setVisibility(INVISIBLE); 2262 CellLayout layout = (CellLayout) child.getParent().getParent(); 2263 layout.prepareChildForDrag(child); 2264 2265 beginDragShared(child, this, accessible); 2266 } 2267 2268 public void beginDragShared(View child, DragSource source, boolean accessible) { 2269 beginDragShared(child, new Point(), source, accessible); 2270 } 2271 2272 public void beginDragShared(View child, Point relativeTouchPos, DragSource source, 2273 boolean accessible) { 2274 child.clearFocus(); 2275 child.setPressed(false); 2276 2277 // The outline is used to visualize where the item will land if dropped 2278 mDragOutline = createDragOutline(child, DRAG_BITMAP_PADDING); 2279 2280 mLauncher.onDragStarted(child); 2281 // The drag bitmap follows the touch point around on the screen 2282 AtomicInteger padding = new AtomicInteger(DRAG_BITMAP_PADDING); 2283 final Bitmap b = createDragBitmap(child, padding); 2284 2285 final int bmpWidth = b.getWidth(); 2286 final int bmpHeight = b.getHeight(); 2287 2288 float scale = mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 2289 int dragLayerX = Math.round(mTempXY[0] - (bmpWidth - scale * child.getWidth()) / 2); 2290 int dragLayerY = Math.round(mTempXY[1] - (bmpHeight - scale * bmpHeight) / 2 2291 - padding.get() / 2); 2292 2293 DeviceProfile grid = mLauncher.getDeviceProfile(); 2294 Point dragVisualizeOffset = null; 2295 Rect dragRect = null; 2296 if (child instanceof BubbleTextView) { 2297 BubbleTextView icon = (BubbleTextView) child; 2298 int iconSize = grid.iconSizePx; 2299 int top = child.getPaddingTop(); 2300 int left = (bmpWidth - iconSize) / 2; 2301 int right = left + iconSize; 2302 int bottom = top + iconSize; 2303 if (icon.isLayoutHorizontal()) { 2304 // If the layout is horizontal, then if we are just picking up the icon, then just 2305 // use the child position since the icon is top-left aligned. Otherwise, offset 2306 // the drag layer position horizontally so that the icon is under the current 2307 // touch position. 2308 if (icon.getIcon().getBounds().contains(relativeTouchPos.x, relativeTouchPos.y)) { 2309 dragLayerX = Math.round(mTempXY[0]); 2310 } else { 2311 dragLayerX = Math.round(mTempXY[0] + relativeTouchPos.x - (bmpWidth / 2)); 2312 } 2313 } 2314 dragLayerY += top; 2315 // Note: The drag region is used to calculate drag layer offsets, but the 2316 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 2317 dragVisualizeOffset = new Point(-padding.get() / 2, padding.get() / 2); 2318 dragRect = new Rect(left, top, right, bottom); 2319 } else if (child instanceof FolderIcon) { 2320 int previewSize = grid.folderIconSizePx; 2321 dragVisualizeOffset = new Point(-padding.get() / 2, 2322 padding.get() / 2 - child.getPaddingTop()); 2323 dragRect = new Rect(0, child.getPaddingTop(), child.getWidth(), previewSize); 2324 } 2325 2326 // Clear the pressed state if necessary 2327 if (child instanceof BubbleTextView) { 2328 BubbleTextView icon = (BubbleTextView) child; 2329 icon.clearPressedBackground(); 2330 } 2331 2332 if (child.getTag() == null || !(child.getTag() instanceof ItemInfo)) { 2333 String msg = "Drag started with a view that has no tag set. This " 2334 + "will cause a crash (issue 11627249) down the line. " 2335 + "View: " + child + " tag: " + child.getTag(); 2336 throw new IllegalStateException(msg); 2337 } 2338 2339 if (child.getParent() instanceof ShortcutAndWidgetContainer) { 2340 mDragSourceInternal = (ShortcutAndWidgetContainer) child.getParent(); 2341 } 2342 2343 DragView dv = mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 2344 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect, scale, accessible); 2345 dv.setIntrinsicIconScaleFactor(source.getIntrinsicIconScaleFactor()); 2346 2347 b.recycle(); 2348 } 2349 2350 public void beginExternalDragShared(View child, DragSource source) { 2351 DeviceProfile grid = mLauncher.getDeviceProfile(); 2352 int iconSize = grid.iconSizePx; 2353 2354 // Notify launcher of drag start 2355 mLauncher.onDragStarted(child); 2356 2357 // Compose a new drag bitmap that is of the icon size 2358 AtomicInteger padding = new AtomicInteger(DRAG_BITMAP_PADDING); 2359 final Bitmap tmpB = createDragBitmap(child, padding); 2360 Bitmap b = Bitmap.createBitmap(iconSize, iconSize, Bitmap.Config.ARGB_8888); 2361 Paint p = new Paint(); 2362 p.setFilterBitmap(true); 2363 mCanvas.setBitmap(b); 2364 mCanvas.drawBitmap(tmpB, new Rect(0, 0, tmpB.getWidth(), tmpB.getHeight()), 2365 new Rect(0, 0, iconSize, iconSize), p); 2366 mCanvas.setBitmap(null); 2367 2368 // Find the child's location on the screen 2369 int bmpWidth = tmpB.getWidth(); 2370 float iconScale = (float) bmpWidth / iconSize; 2371 float scale = mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY) * iconScale; 2372 int dragLayerX = Math.round(mTempXY[0] - (bmpWidth - scale * child.getWidth()) / 2); 2373 int dragLayerY = Math.round(mTempXY[1]); 2374 2375 // Note: The drag region is used to calculate drag layer offsets, but the 2376 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 2377 Point dragVisualizeOffset = new Point(-padding.get() / 2, padding.get() / 2); 2378 Rect dragRect = new Rect(0, 0, iconSize, iconSize); 2379 2380 if (child.getTag() == null || !(child.getTag() instanceof ItemInfo)) { 2381 String msg = "Drag started with a view that has no tag set. This " 2382 + "will cause a crash (issue 11627249) down the line. " 2383 + "View: " + child + " tag: " + child.getTag(); 2384 throw new IllegalStateException(msg); 2385 } 2386 2387 // Start the drag 2388 DragView dv = mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 2389 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect, scale, false); 2390 dv.setIntrinsicIconScaleFactor(source.getIntrinsicIconScaleFactor()); 2391 2392 // Recycle temporary bitmaps 2393 tmpB.recycle(); 2394 } 2395 2396 public boolean transitionStateShouldAllowDrop() { 2397 return ((!isSwitchingState() || mTransitionProgress > 0.5f) && 2398 (mState == State.NORMAL || mState == State.SPRING_LOADED)); 2399 } 2400 2401 /** 2402 * {@inheritDoc} 2403 */ 2404 public boolean acceptDrop(DragObject d) { 2405 // If it's an external drop (e.g. from All Apps), check if it should be accepted 2406 CellLayout dropTargetLayout = mDropToLayout; 2407 if (d.dragSource != this) { 2408 // Don't accept the drop if we're not over a screen at time of drop 2409 if (dropTargetLayout == null) { 2410 return false; 2411 } 2412 if (!transitionStateShouldAllowDrop()) return false; 2413 2414 mDragViewVisualCenter = d.getVisualCenter(mDragViewVisualCenter); 2415 2416 // We want the point to be mapped to the dragTarget. 2417 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 2418 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2419 } else { 2420 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 2421 } 2422 2423 int spanX = 1; 2424 int spanY = 1; 2425 if (mDragInfo != null) { 2426 final CellLayout.CellInfo dragCellInfo = mDragInfo; 2427 spanX = dragCellInfo.spanX; 2428 spanY = dragCellInfo.spanY; 2429 } else { 2430 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 2431 spanX = dragInfo.spanX; 2432 spanY = dragInfo.spanY; 2433 } 2434 2435 int minSpanX = spanX; 2436 int minSpanY = spanY; 2437 if (d.dragInfo instanceof PendingAddWidgetInfo) { 2438 minSpanX = ((PendingAddWidgetInfo) d.dragInfo).minSpanX; 2439 minSpanY = ((PendingAddWidgetInfo) d.dragInfo).minSpanY; 2440 } 2441 2442 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2443 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, dropTargetLayout, 2444 mTargetCell); 2445 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2446 mDragViewVisualCenter[1], mTargetCell); 2447 if (mCreateUserFolderOnDrop && willCreateUserFolder((ItemInfo) d.dragInfo, 2448 dropTargetLayout, mTargetCell, distance, true)) { 2449 return true; 2450 } 2451 2452 if (mAddToExistingFolderOnDrop && willAddToExistingUserFolder((ItemInfo) d.dragInfo, 2453 dropTargetLayout, mTargetCell, distance)) { 2454 return true; 2455 } 2456 2457 int[] resultSpan = new int[2]; 2458 mTargetCell = dropTargetLayout.performReorder((int) mDragViewVisualCenter[0], 2459 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2460 null, mTargetCell, resultSpan, CellLayout.MODE_ACCEPT_DROP); 2461 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2462 2463 // Don't accept the drop if there's no room for the item 2464 if (!foundCell) { 2465 // Don't show the message if we are dropping on the AllApps button and the hotseat 2466 // is full 2467 boolean isHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2468 if (mTargetCell != null && isHotseat) { 2469 Hotseat hotseat = mLauncher.getHotseat(); 2470 if (hotseat.isAllAppsButtonRank( 2471 hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { 2472 return false; 2473 } 2474 } 2475 2476 mLauncher.showOutOfSpaceMessage(isHotseat); 2477 return false; 2478 } 2479 } 2480 2481 long screenId = getIdForScreen(dropTargetLayout); 2482 if (screenId == EXTRA_EMPTY_SCREEN_ID) { 2483 commitExtraEmptyScreen(); 2484 } 2485 2486 return true; 2487 } 2488 2489 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, 2490 float distance, boolean considerTimeout) { 2491 if (distance > mMaxDistanceForFolderCreation) return false; 2492 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2493 return willCreateUserFolder(info, dropOverView, considerTimeout); 2494 } 2495 2496 boolean willCreateUserFolder(ItemInfo info, View dropOverView, boolean considerTimeout) { 2497 if (dropOverView != null) { 2498 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2499 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.cellY)) { 2500 return false; 2501 } 2502 } 2503 2504 boolean hasntMoved = false; 2505 if (mDragInfo != null) { 2506 hasntMoved = dropOverView == mDragInfo.cell; 2507 } 2508 2509 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2510 return false; 2511 } 2512 2513 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2514 boolean willBecomeShortcut = 2515 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2516 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2517 2518 return (aboveShortcut && willBecomeShortcut); 2519 } 2520 2521 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell, 2522 float distance) { 2523 if (distance > mMaxDistanceForFolderCreation) return false; 2524 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2525 return willAddToExistingUserFolder(dragInfo, dropOverView); 2526 2527 } 2528 boolean willAddToExistingUserFolder(Object dragInfo, View dropOverView) { 2529 if (dropOverView != null) { 2530 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2531 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.cellY)) { 2532 return false; 2533 } 2534 } 2535 2536 if (dropOverView instanceof FolderIcon) { 2537 FolderIcon fi = (FolderIcon) dropOverView; 2538 if (fi.acceptDrop(dragInfo)) { 2539 return true; 2540 } 2541 } 2542 return false; 2543 } 2544 2545 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2546 int[] targetCell, float distance, boolean external, DragView dragView, 2547 Runnable postAnimationRunnable) { 2548 if (distance > mMaxDistanceForFolderCreation) return false; 2549 View v = target.getChildAt(targetCell[0], targetCell[1]); 2550 2551 boolean hasntMoved = false; 2552 if (mDragInfo != null) { 2553 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2554 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2555 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2556 } 2557 2558 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2559 mCreateUserFolderOnDrop = false; 2560 final long screenId = getIdForScreen(target); 2561 2562 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2563 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2564 2565 if (aboveShortcut && willBecomeShortcut) { 2566 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2567 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2568 // if the drag started here, we need to remove it from the workspace 2569 if (!external) { 2570 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2571 } 2572 2573 Rect folderLocation = new Rect(); 2574 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2575 target.removeView(v); 2576 2577 FolderIcon fi = 2578 mLauncher.addFolder(target, container, screenId, targetCell[0], targetCell[1]); 2579 destInfo.cellX = -1; 2580 destInfo.cellY = -1; 2581 sourceInfo.cellX = -1; 2582 sourceInfo.cellY = -1; 2583 2584 // If the dragView is null, we can't animate 2585 boolean animate = dragView != null; 2586 if (animate) { 2587 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2588 postAnimationRunnable); 2589 } else { 2590 fi.addItem(destInfo); 2591 fi.addItem(sourceInfo); 2592 } 2593 return true; 2594 } 2595 return false; 2596 } 2597 2598 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2599 float distance, DragObject d, boolean external) { 2600 if (distance > mMaxDistanceForFolderCreation) return false; 2601 2602 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2603 if (!mAddToExistingFolderOnDrop) return false; 2604 mAddToExistingFolderOnDrop = false; 2605 2606 if (dropOverView instanceof FolderIcon) { 2607 FolderIcon fi = (FolderIcon) dropOverView; 2608 if (fi.acceptDrop(d.dragInfo)) { 2609 fi.onDrop(d); 2610 2611 // if the drag started here, we need to remove it from the workspace 2612 if (!external) { 2613 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2614 } 2615 return true; 2616 } 2617 } 2618 return false; 2619 } 2620 2621 @Override 2622 public void prepareAccessibilityDrop() { } 2623 2624 public void onDrop(final DragObject d) { 2625 mDragViewVisualCenter = d.getVisualCenter(mDragViewVisualCenter); 2626 CellLayout dropTargetLayout = mDropToLayout; 2627 2628 // We want the point to be mapped to the dragTarget. 2629 if (dropTargetLayout != null) { 2630 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 2631 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2632 } else { 2633 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 2634 } 2635 } 2636 2637 int snapScreen = WorkspaceStateTransitionAnimation.SCROLL_TO_CURRENT_PAGE; 2638 boolean resizeOnDrop = false; 2639 if (d.dragSource != this) { 2640 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2641 (int) mDragViewVisualCenter[1] }; 2642 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2643 } else if (mDragInfo != null) { 2644 final View cell = mDragInfo.cell; 2645 2646 Runnable resizeRunnable = null; 2647 if (dropTargetLayout != null && !d.cancelled) { 2648 // Move internally 2649 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2650 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2651 long container = hasMovedIntoHotseat ? 2652 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2653 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2654 long screenId = (mTargetCell[0] < 0) ? 2655 mDragInfo.screenId : getIdForScreen(dropTargetLayout); 2656 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2657 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2658 // First we find the cell nearest to point at which the item is 2659 // dropped, without any consideration to whether there is an item there. 2660 2661 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2662 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2663 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2664 mDragViewVisualCenter[1], mTargetCell); 2665 2666 // If the item being dropped is a shortcut and the nearest drop 2667 // cell also contains a shortcut, then create a folder with the two shortcuts. 2668 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2669 dropTargetLayout, mTargetCell, distance, false, d.dragView, null)) { 2670 return; 2671 } 2672 2673 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, 2674 distance, d, false)) { 2675 return; 2676 } 2677 2678 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2679 // we need to find the nearest cell location that is vacant 2680 ItemInfo item = (ItemInfo) d.dragInfo; 2681 int minSpanX = item.spanX; 2682 int minSpanY = item.spanY; 2683 if (item.minSpanX > 0 && item.minSpanY > 0) { 2684 minSpanX = item.minSpanX; 2685 minSpanY = item.minSpanY; 2686 } 2687 2688 int[] resultSpan = new int[2]; 2689 mTargetCell = dropTargetLayout.performReorder((int) mDragViewVisualCenter[0], 2690 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, cell, 2691 mTargetCell, resultSpan, CellLayout.MODE_ON_DROP); 2692 2693 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2694 2695 // if the widget resizes on drop 2696 if (foundCell && (cell instanceof AppWidgetHostView) && 2697 (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY)) { 2698 resizeOnDrop = true; 2699 item.spanX = resultSpan[0]; 2700 item.spanY = resultSpan[1]; 2701 AppWidgetHostView awhv = (AppWidgetHostView) cell; 2702 AppWidgetResizeFrame.updateWidgetSizeRanges(awhv, mLauncher, resultSpan[0], 2703 resultSpan[1]); 2704 } 2705 2706 if (getScreenIdForPageIndex(mCurrentPage) != screenId && !hasMovedIntoHotseat) { 2707 snapScreen = getPageIndexForScreenId(screenId); 2708 snapToPage(snapScreen); 2709 } 2710 2711 if (foundCell) { 2712 final ItemInfo info = (ItemInfo) cell.getTag(); 2713 if (hasMovedLayouts) { 2714 // Reparent the view 2715 CellLayout parentCell = getParentCellLayoutForView(cell); 2716 if (parentCell != null) { 2717 parentCell.removeView(cell); 2718 } else if (LauncherAppState.isDogfoodBuild()) { 2719 throw new NullPointerException("mDragInfo.cell has null parent"); 2720 } 2721 addInScreen(cell, container, screenId, mTargetCell[0], mTargetCell[1], 2722 info.spanX, info.spanY); 2723 } 2724 2725 // update the item's position after drop 2726 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2727 lp.cellX = lp.tmpCellX = mTargetCell[0]; 2728 lp.cellY = lp.tmpCellY = mTargetCell[1]; 2729 lp.cellHSpan = item.spanX; 2730 lp.cellVSpan = item.spanY; 2731 lp.isLockedToGrid = true; 2732 2733 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2734 cell instanceof LauncherAppWidgetHostView) { 2735 final CellLayout cellLayout = dropTargetLayout; 2736 // We post this call so that the widget has a chance to be placed 2737 // in its final location 2738 2739 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2740 AppWidgetProviderInfo pInfo = hostView.getAppWidgetInfo(); 2741 if (pInfo != null && pInfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE 2742 && !d.accessibleDrag) { 2743 final Runnable addResizeFrame = new Runnable() { 2744 public void run() { 2745 DragLayer dragLayer = mLauncher.getDragLayer(); 2746 dragLayer.addResizeFrame(info, hostView, cellLayout); 2747 } 2748 }; 2749 resizeRunnable = (new Runnable() { 2750 public void run() { 2751 if (!isPageMoving()) { 2752 addResizeFrame.run(); 2753 } else { 2754 mDelayedResizeRunnable = addResizeFrame; 2755 } 2756 } 2757 }); 2758 } 2759 } 2760 2761 LauncherModel.modifyItemInDatabase(mLauncher, info, container, screenId, lp.cellX, 2762 lp.cellY, item.spanX, item.spanY); 2763 } else { 2764 // If we can't find a drop location, we return the item to its original position 2765 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2766 mTargetCell[0] = lp.cellX; 2767 mTargetCell[1] = lp.cellY; 2768 CellLayout layout = (CellLayout) cell.getParent().getParent(); 2769 layout.markCellsAsOccupiedForView(cell); 2770 } 2771 } 2772 2773 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2774 final Runnable finalResizeRunnable = resizeRunnable; 2775 // Prepare it to be animated into its new position 2776 // This must be called after the view has been re-parented 2777 final Runnable onCompleteRunnable = new Runnable() { 2778 @Override 2779 public void run() { 2780 mAnimatingViewIntoPlace = false; 2781 updateChildrenLayersEnabled(false); 2782 if (finalResizeRunnable != null) { 2783 finalResizeRunnable.run(); 2784 } 2785 } 2786 }; 2787 mAnimatingViewIntoPlace = true; 2788 if (d.dragView.hasDrawn()) { 2789 final ItemInfo info = (ItemInfo) cell.getTag(); 2790 boolean isWidget = info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET 2791 || info.itemType == LauncherSettings.Favorites.ITEM_TYPE_CUSTOM_APPWIDGET; 2792 if (isWidget) { 2793 int animationType = resizeOnDrop ? ANIMATE_INTO_POSITION_AND_RESIZE : 2794 ANIMATE_INTO_POSITION_AND_DISAPPEAR; 2795 animateWidgetDrop(info, parent, d.dragView, 2796 onCompleteRunnable, animationType, cell, false); 2797 } else { 2798 int duration = snapScreen < 0 ? 2799 WorkspaceStateTransitionAnimation.SCROLL_TO_CURRENT_PAGE : 2800 ADJACENT_SCREEN_DROP_DURATION; 2801 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2802 onCompleteRunnable, this); 2803 } 2804 } else { 2805 d.deferDragViewCleanupPostAnimation = false; 2806 cell.setVisibility(VISIBLE); 2807 } 2808 parent.onDropChild(cell); 2809 } 2810 } 2811 2812 /** 2813 * Computes the area relative to dragLayer which is used to display a page. 2814 */ 2815 public void getPageAreaRelativeToDragLayer(Rect outArea) { 2816 CellLayout child = (CellLayout) getChildAt(getNextPage()); 2817 if (child == null) { 2818 return; 2819 } 2820 ShortcutAndWidgetContainer boundingLayout = child.getShortcutsAndWidgets(); 2821 2822 // Use the absolute left instead of the child left, as we want the visible area 2823 // irrespective of the visible child. Since the view can only scroll horizontally, the 2824 // top position is not affected. 2825 mTempXY[0] = getViewportOffsetX() + getPaddingLeft() + boundingLayout.getLeft(); 2826 mTempXY[1] = child.getTop() + boundingLayout.getTop(); 2827 2828 float scale = mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(this, mTempXY); 2829 outArea.set(mTempXY[0], mTempXY[1], 2830 (int) (mTempXY[0] + scale * boundingLayout.getMeasuredWidth()), 2831 (int) (mTempXY[1] + scale * boundingLayout.getMeasuredHeight())); 2832 } 2833 2834 public void getViewLocationRelativeToSelf(View v, int[] location) { 2835 getLocationInWindow(location); 2836 int x = location[0]; 2837 int y = location[1]; 2838 2839 v.getLocationInWindow(location); 2840 int vX = location[0]; 2841 int vY = location[1]; 2842 2843 location[0] = vX - x; 2844 location[1] = vY - y; 2845 } 2846 2847 @Override 2848 public void onDragEnter(DragObject d) { 2849 if (ENFORCE_DRAG_EVENT_ORDER) { 2850 enfoceDragParity("onDragEnter", 1, 1); 2851 } 2852 2853 mCreateUserFolderOnDrop = false; 2854 mAddToExistingFolderOnDrop = false; 2855 2856 mDropToLayout = null; 2857 CellLayout layout = getCurrentDropLayout(); 2858 setCurrentDropLayout(layout); 2859 setCurrentDragOverlappingLayout(layout); 2860 2861 if (!workspaceInModalState()) { 2862 mLauncher.getDragLayer().showPageHints(); 2863 } 2864 } 2865 2866 /** Return a rect that has the cellWidth/cellHeight (left, top), and 2867 * widthGap/heightGap (right, bottom) */ 2868 static Rect getCellLayoutMetrics(Launcher launcher, int orientation) { 2869 LauncherAppState app = LauncherAppState.getInstance(); 2870 InvariantDeviceProfile inv = app.getInvariantDeviceProfile(); 2871 2872 Display display = launcher.getWindowManager().getDefaultDisplay(); 2873 Point smallestSize = new Point(); 2874 Point largestSize = new Point(); 2875 display.getCurrentSizeRange(smallestSize, largestSize); 2876 int countX = (int) inv.numColumns; 2877 int countY = (int) inv.numRows; 2878 boolean isLayoutRtl = Utilities.isRtl(launcher.getResources()); 2879 if (orientation == CellLayout.LANDSCAPE) { 2880 if (mLandscapeCellLayoutMetrics == null) { 2881 Rect padding = inv.landscapeProfile.getWorkspacePadding(isLayoutRtl); 2882 int width = largestSize.x - padding.left - padding.right; 2883 int height = smallestSize.y - padding.top - padding.bottom; 2884 mLandscapeCellLayoutMetrics = new Rect(); 2885 mLandscapeCellLayoutMetrics.set( 2886 DeviceProfile.calculateCellWidth(width, countX), 2887 DeviceProfile.calculateCellHeight(height, countY), 0, 0); 2888 } 2889 return mLandscapeCellLayoutMetrics; 2890 } else if (orientation == CellLayout.PORTRAIT) { 2891 if (mPortraitCellLayoutMetrics == null) { 2892 Rect padding = inv.portraitProfile.getWorkspacePadding(isLayoutRtl); 2893 int width = smallestSize.x - padding.left - padding.right; 2894 int height = largestSize.y - padding.top - padding.bottom; 2895 mPortraitCellLayoutMetrics = new Rect(); 2896 mPortraitCellLayoutMetrics.set( 2897 DeviceProfile.calculateCellWidth(width, countX), 2898 DeviceProfile.calculateCellHeight(height, countY), 0, 0); 2899 } 2900 return mPortraitCellLayoutMetrics; 2901 } 2902 return null; 2903 } 2904 2905 @Override 2906 public void onDragExit(DragObject d) { 2907 if (ENFORCE_DRAG_EVENT_ORDER) { 2908 enfoceDragParity("onDragExit", -1, 0); 2909 } 2910 2911 // Here we store the final page that will be dropped to, if the workspace in fact 2912 // receives the drop 2913 if (mInScrollArea) { 2914 if (isPageMoving()) { 2915 // If the user drops while the page is scrolling, we should use that page as the 2916 // destination instead of the page that is being hovered over. 2917 mDropToLayout = (CellLayout) getPageAt(getNextPage()); 2918 } else { 2919 mDropToLayout = mDragOverlappingLayout; 2920 } 2921 } else { 2922 mDropToLayout = mDragTargetLayout; 2923 } 2924 2925 if (mDragMode == DRAG_MODE_CREATE_FOLDER) { 2926 mCreateUserFolderOnDrop = true; 2927 } else if (mDragMode == DRAG_MODE_ADD_TO_FOLDER) { 2928 mAddToExistingFolderOnDrop = true; 2929 } 2930 2931 // Reset the scroll area and previous drag target 2932 onResetScrollArea(); 2933 setCurrentDropLayout(null); 2934 setCurrentDragOverlappingLayout(null); 2935 2936 mSpringLoadedDragController.cancel(); 2937 2938 mLauncher.getDragLayer().hidePageHints(); 2939 } 2940 2941 private void enfoceDragParity(String event, int update, int expectedValue) { 2942 enfoceDragParity(this, event, update, expectedValue); 2943 for (int i = 0; i < getChildCount(); i++) { 2944 enfoceDragParity(getChildAt(i), event, update, expectedValue); 2945 } 2946 } 2947 2948 private void enfoceDragParity(View v, String event, int update, int expectedValue) { 2949 Object tag = v.getTag(R.id.drag_event_parity); 2950 int value = tag == null ? 0 : (Integer) tag; 2951 value += update; 2952 v.setTag(R.id.drag_event_parity, value); 2953 2954 if (value != expectedValue) { 2955 Log.e(TAG, event + ": Drag contract violated: " + value); 2956 } 2957 } 2958 2959 void setCurrentDropLayout(CellLayout layout) { 2960 if (mDragTargetLayout != null) { 2961 mDragTargetLayout.revertTempState(); 2962 mDragTargetLayout.onDragExit(); 2963 } 2964 mDragTargetLayout = layout; 2965 if (mDragTargetLayout != null) { 2966 mDragTargetLayout.onDragEnter(); 2967 } 2968 cleanupReorder(true); 2969 cleanupFolderCreation(); 2970 setCurrentDropOverCell(-1, -1); 2971 } 2972 2973 void setCurrentDragOverlappingLayout(CellLayout layout) { 2974 if (mDragOverlappingLayout != null) { 2975 mDragOverlappingLayout.setIsDragOverlapping(false); 2976 } 2977 mDragOverlappingLayout = layout; 2978 if (mDragOverlappingLayout != null) { 2979 mDragOverlappingLayout.setIsDragOverlapping(true); 2980 } 2981 invalidate(); 2982 } 2983 2984 void setCurrentDropOverCell(int x, int y) { 2985 if (x != mDragOverX || y != mDragOverY) { 2986 mDragOverX = x; 2987 mDragOverY = y; 2988 setDragMode(DRAG_MODE_NONE); 2989 } 2990 } 2991 2992 void setDragMode(int dragMode) { 2993 if (dragMode != mDragMode) { 2994 if (dragMode == DRAG_MODE_NONE) { 2995 cleanupAddToFolder(); 2996 // We don't want to cancel the re-order alarm every time the target cell changes 2997 // as this feels to slow / unresponsive. 2998 cleanupReorder(false); 2999 cleanupFolderCreation(); 3000 } else if (dragMode == DRAG_MODE_ADD_TO_FOLDER) { 3001 cleanupReorder(true); 3002 cleanupFolderCreation(); 3003 } else if (dragMode == DRAG_MODE_CREATE_FOLDER) { 3004 cleanupAddToFolder(); 3005 cleanupReorder(true); 3006 } else if (dragMode == DRAG_MODE_REORDER) { 3007 cleanupAddToFolder(); 3008 cleanupFolderCreation(); 3009 } 3010 mDragMode = dragMode; 3011 } 3012 } 3013 3014 private void cleanupFolderCreation() { 3015 if (mDragFolderRingAnimator != null) { 3016 mDragFolderRingAnimator.animateToNaturalState(); 3017 mDragFolderRingAnimator = null; 3018 } 3019 mFolderCreationAlarm.setOnAlarmListener(null); 3020 mFolderCreationAlarm.cancelAlarm(); 3021 } 3022 3023 private void cleanupAddToFolder() { 3024 if (mDragOverFolderIcon != null) { 3025 mDragOverFolderIcon.onDragExit(null); 3026 mDragOverFolderIcon = null; 3027 } 3028 } 3029 3030 private void cleanupReorder(boolean cancelAlarm) { 3031 // Any pending reorders are canceled 3032 if (cancelAlarm) { 3033 mReorderAlarm.cancelAlarm(); 3034 } 3035 mLastReorderX = -1; 3036 mLastReorderY = -1; 3037 } 3038 3039 /* 3040 * 3041 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 3042 * coordinate space. The argument xy is modified with the return result. 3043 * 3044 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 3045 * computing it itself; we use this to avoid redundant matrix inversions in 3046 * findMatchingPageForDragOver 3047 * 3048 */ 3049 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 3050 xy[0] = xy[0] - v.getLeft(); 3051 xy[1] = xy[1] - v.getTop(); 3052 } 3053 3054 boolean isPointInSelfOverHotseat(int x, int y, Rect r) { 3055 if (r == null) { 3056 r = new Rect(); 3057 } 3058 mTempPt[0] = x; 3059 mTempPt[1] = y; 3060 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(this, mTempPt, true); 3061 3062 DeviceProfile grid = mLauncher.getDeviceProfile(); 3063 r = grid.getHotseatRect(); 3064 if (r.contains(mTempPt[0], mTempPt[1])) { 3065 return true; 3066 } 3067 return false; 3068 } 3069 3070 void mapPointFromSelfToHotseatLayout(Hotseat hotseat, float[] xy) { 3071 mTempPt[0] = (int) xy[0]; 3072 mTempPt[1] = (int) xy[1]; 3073 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(this, mTempPt, true); 3074 mLauncher.getDragLayer().mapCoordInSelfToDescendent(hotseat.getLayout(), mTempPt); 3075 3076 xy[0] = mTempPt[0]; 3077 xy[1] = mTempPt[1]; 3078 } 3079 3080 /* 3081 * 3082 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 3083 * the parent View's coordinate space. The argument xy is modified with the return result. 3084 * 3085 */ 3086 void mapPointFromChildToSelf(View v, float[] xy) { 3087 xy[0] += v.getLeft(); 3088 xy[1] += v.getTop(); 3089 } 3090 3091 static private float squaredDistance(float[] point1, float[] point2) { 3092 float distanceX = point1[0] - point2[0]; 3093 float distanceY = point2[1] - point2[1]; 3094 return distanceX * distanceX + distanceY * distanceY; 3095 } 3096 3097 /* 3098 * 3099 * This method returns the CellLayout that is currently being dragged to. In order to drag 3100 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 3101 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 3102 * 3103 * Return null if no CellLayout is currently being dragged over 3104 * 3105 */ 3106 private CellLayout findMatchingPageForDragOver( 3107 DragView dragView, float originX, float originY, boolean exact) { 3108 // We loop through all the screens (ie CellLayouts) and see which ones overlap 3109 // with the item being dragged and then choose the one that's closest to the touch point 3110 final int screenCount = getChildCount(); 3111 CellLayout bestMatchingScreen = null; 3112 float smallestDistSoFar = Float.MAX_VALUE; 3113 3114 for (int i = 0; i < screenCount; i++) { 3115 // The custom content screen is not a valid drag over option 3116 if (mScreenOrder.get(i) == CUSTOM_CONTENT_SCREEN_ID) { 3117 continue; 3118 } 3119 3120 CellLayout cl = (CellLayout) getChildAt(i); 3121 3122 final float[] touchXy = {originX, originY}; 3123 // Transform the touch coordinates to the CellLayout's local coordinates 3124 // If the touch point is within the bounds of the cell layout, we can return immediately 3125 cl.getMatrix().invert(mTempInverseMatrix); 3126 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 3127 3128 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 3129 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 3130 return cl; 3131 } 3132 3133 if (!exact) { 3134 // Get the center of the cell layout in screen coordinates 3135 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 3136 cellLayoutCenter[0] = cl.getWidth()/2; 3137 cellLayoutCenter[1] = cl.getHeight()/2; 3138 mapPointFromChildToSelf(cl, cellLayoutCenter); 3139 3140 touchXy[0] = originX; 3141 touchXy[1] = originY; 3142 3143 // Calculate the distance between the center of the CellLayout 3144 // and the touch point 3145 float dist = squaredDistance(touchXy, cellLayoutCenter); 3146 3147 if (dist < smallestDistSoFar) { 3148 smallestDistSoFar = dist; 3149 bestMatchingScreen = cl; 3150 } 3151 } 3152 } 3153 return bestMatchingScreen; 3154 } 3155 3156 private boolean isDragWidget(DragObject d) { 3157 return (d.dragInfo instanceof LauncherAppWidgetInfo || 3158 d.dragInfo instanceof PendingAddWidgetInfo); 3159 } 3160 private boolean isExternalDragWidget(DragObject d) { 3161 return d.dragSource != this && isDragWidget(d); 3162 } 3163 3164 public void onDragOver(DragObject d) { 3165 // Skip drag over events while we are dragging over side pages 3166 if (mInScrollArea || !transitionStateShouldAllowDrop()) return; 3167 3168 Rect r = new Rect(); 3169 CellLayout layout = null; 3170 ItemInfo item = (ItemInfo) d.dragInfo; 3171 if (item == null) { 3172 if (LauncherAppState.isDogfoodBuild()) { 3173 throw new NullPointerException("DragObject has null info"); 3174 } 3175 return; 3176 } 3177 3178 // Ensure that we have proper spans for the item that we are dropping 3179 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 3180 mDragViewVisualCenter = d.getVisualCenter(mDragViewVisualCenter); 3181 3182 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 3183 // Identify whether we have dragged over a side page 3184 if (workspaceInModalState()) { 3185 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 3186 if (isPointInSelfOverHotseat(d.x, d.y, r)) { 3187 layout = mLauncher.getHotseat().getLayout(); 3188 } 3189 } 3190 if (layout == null) { 3191 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false); 3192 } 3193 if (layout != mDragTargetLayout) { 3194 setCurrentDropLayout(layout); 3195 setCurrentDragOverlappingLayout(layout); 3196 3197 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 3198 if (isInSpringLoadedMode) { 3199 if (mLauncher.isHotseatLayout(layout)) { 3200 mSpringLoadedDragController.cancel(); 3201 } else { 3202 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 3203 } 3204 } 3205 } 3206 } else { 3207 // Test to see if we are over the hotseat otherwise just use the current page 3208 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 3209 if (isPointInSelfOverHotseat(d.x, d.y, r)) { 3210 layout = mLauncher.getHotseat().getLayout(); 3211 } 3212 } 3213 if (layout == null) { 3214 layout = getCurrentDropLayout(); 3215 } 3216 if (layout != mDragTargetLayout) { 3217 setCurrentDropLayout(layout); 3218 setCurrentDragOverlappingLayout(layout); 3219 } 3220 } 3221 3222 // Handle the drag over 3223 if (mDragTargetLayout != null) { 3224 // We want the point to be mapped to the dragTarget. 3225 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 3226 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 3227 } else { 3228 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 3229 } 3230 3231 int minSpanX = item.spanX; 3232 int minSpanY = item.spanY; 3233 if (item.minSpanX > 0 && item.minSpanY > 0) { 3234 minSpanX = item.minSpanX; 3235 minSpanY = item.minSpanY; 3236 } 3237 3238 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 3239 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, 3240 mDragTargetLayout, mTargetCell); 3241 int reorderX = mTargetCell[0]; 3242 int reorderY = mTargetCell[1]; 3243 3244 setCurrentDropOverCell(mTargetCell[0], mTargetCell[1]); 3245 3246 float targetCellDistance = mDragTargetLayout.getDistanceFromCell( 3247 mDragViewVisualCenter[0], mDragViewVisualCenter[1], mTargetCell); 3248 3249 manageFolderFeedback(mDragTargetLayout, mTargetCell, targetCellDistance, d); 3250 3251 boolean nearestDropOccupied = mDragTargetLayout.isNearestDropLocationOccupied((int) 3252 mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], item.spanX, 3253 item.spanY, child, mTargetCell); 3254 3255 if (!nearestDropOccupied) { 3256 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 3257 mTargetCell[0], mTargetCell[1], item.spanX, item.spanY, false, d); 3258 } else if ((mDragMode == DRAG_MODE_NONE || mDragMode == DRAG_MODE_REORDER) 3259 && !mReorderAlarm.alarmPending() && (mLastReorderX != reorderX || 3260 mLastReorderY != reorderY)) { 3261 3262 int[] resultSpan = new int[2]; 3263 mDragTargetLayout.performReorder((int) mDragViewVisualCenter[0], 3264 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, item.spanX, item.spanY, 3265 child, mTargetCell, resultSpan, CellLayout.MODE_SHOW_REORDER_HINT); 3266 3267 // Otherwise, if we aren't adding to or creating a folder and there's no pending 3268 // reorder, then we schedule a reorder 3269 ReorderAlarmListener listener = new ReorderAlarmListener(mDragViewVisualCenter, 3270 minSpanX, minSpanY, item.spanX, item.spanY, d, child); 3271 mReorderAlarm.setOnAlarmListener(listener); 3272 mReorderAlarm.setAlarm(REORDER_TIMEOUT); 3273 } 3274 3275 if (mDragMode == DRAG_MODE_CREATE_FOLDER || mDragMode == DRAG_MODE_ADD_TO_FOLDER || 3276 !nearestDropOccupied) { 3277 if (mDragTargetLayout != null) { 3278 mDragTargetLayout.revertTempState(); 3279 } 3280 } 3281 } 3282 } 3283 3284 private void manageFolderFeedback(CellLayout targetLayout, 3285 int[] targetCell, float distance, DragObject dragObject) { 3286 if (distance > mMaxDistanceForFolderCreation) return; 3287 3288 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], mTargetCell[1]); 3289 ItemInfo info = (ItemInfo) dragObject.dragInfo; 3290 boolean userFolderPending = willCreateUserFolder(info, dragOverView, false); 3291 if (mDragMode == DRAG_MODE_NONE && userFolderPending && 3292 !mFolderCreationAlarm.alarmPending()) { 3293 3294 FolderCreationAlarmListener listener = new 3295 FolderCreationAlarmListener(targetLayout, targetCell[0], targetCell[1]); 3296 3297 if (!dragObject.accessibleDrag) { 3298 mFolderCreationAlarm.setOnAlarmListener(listener); 3299 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 3300 } else { 3301 listener.onAlarm(mFolderCreationAlarm); 3302 } 3303 3304 if (dragObject.stateAnnouncer != null) { 3305 dragObject.stateAnnouncer.announce(WorkspaceAccessibilityHelper 3306 .getDescriptionForDropOver(dragOverView, getContext())); 3307 } 3308 return; 3309 } 3310 3311 boolean willAddToFolder = willAddToExistingUserFolder(info, dragOverView); 3312 if (willAddToFolder && mDragMode == DRAG_MODE_NONE) { 3313 mDragOverFolderIcon = ((FolderIcon) dragOverView); 3314 mDragOverFolderIcon.onDragEnter(info); 3315 if (targetLayout != null) { 3316 targetLayout.clearDragOutlines(); 3317 } 3318 setDragMode(DRAG_MODE_ADD_TO_FOLDER); 3319 3320 if (dragObject.stateAnnouncer != null) { 3321 dragObject.stateAnnouncer.announce(WorkspaceAccessibilityHelper 3322 .getDescriptionForDropOver(dragOverView, getContext())); 3323 } 3324 return; 3325 } 3326 3327 if (mDragMode == DRAG_MODE_ADD_TO_FOLDER && !willAddToFolder) { 3328 setDragMode(DRAG_MODE_NONE); 3329 } 3330 if (mDragMode == DRAG_MODE_CREATE_FOLDER && !userFolderPending) { 3331 setDragMode(DRAG_MODE_NONE); 3332 } 3333 } 3334 3335 class FolderCreationAlarmListener implements OnAlarmListener { 3336 CellLayout layout; 3337 int cellX; 3338 int cellY; 3339 3340 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 3341 this.layout = layout; 3342 this.cellX = cellX; 3343 this.cellY = cellY; 3344 } 3345 3346 public void onAlarm(Alarm alarm) { 3347 if (mDragFolderRingAnimator != null) { 3348 // This shouldn't happen ever, but just in case, make sure we clean up the mess. 3349 mDragFolderRingAnimator.animateToNaturalState(); 3350 } 3351 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 3352 mDragFolderRingAnimator.setCell(cellX, cellY); 3353 mDragFolderRingAnimator.setCellLayout(layout); 3354 mDragFolderRingAnimator.animateToAcceptState(); 3355 layout.showFolderAccept(mDragFolderRingAnimator); 3356 layout.clearDragOutlines(); 3357 setDragMode(DRAG_MODE_CREATE_FOLDER); 3358 } 3359 } 3360 3361 class ReorderAlarmListener implements OnAlarmListener { 3362 float[] dragViewCenter; 3363 int minSpanX, minSpanY, spanX, spanY; 3364 DragObject dragObject; 3365 View child; 3366 3367 public ReorderAlarmListener(float[] dragViewCenter, int minSpanX, int minSpanY, int spanX, 3368 int spanY, DragObject dragObject, View child) { 3369 this.dragViewCenter = dragViewCenter; 3370 this.minSpanX = minSpanX; 3371 this.minSpanY = minSpanY; 3372 this.spanX = spanX; 3373 this.spanY = spanY; 3374 this.child = child; 3375 this.dragObject = dragObject; 3376 } 3377 3378 public void onAlarm(Alarm alarm) { 3379 int[] resultSpan = new int[2]; 3380 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 3381 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, mDragTargetLayout, 3382 mTargetCell); 3383 mLastReorderX = mTargetCell[0]; 3384 mLastReorderY = mTargetCell[1]; 3385 3386 mTargetCell = mDragTargetLayout.performReorder((int) mDragViewVisualCenter[0], 3387 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 3388 child, mTargetCell, resultSpan, CellLayout.MODE_DRAG_OVER); 3389 3390 if (mTargetCell[0] < 0 || mTargetCell[1] < 0) { 3391 mDragTargetLayout.revertTempState(); 3392 } else { 3393 setDragMode(DRAG_MODE_REORDER); 3394 } 3395 3396 boolean resize = resultSpan[0] != spanX || resultSpan[1] != spanY; 3397 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 3398 mTargetCell[0], mTargetCell[1], resultSpan[0], resultSpan[1], resize, dragObject); 3399 } 3400 } 3401 3402 @Override 3403 public void getHitRectRelativeToDragLayer(Rect outRect) { 3404 // We want the workspace to have the whole area of the display (it will find the correct 3405 // cell layout to drop to in the existing drag/drop logic. 3406 mLauncher.getDragLayer().getDescendantRectRelativeToSelf(this, outRect); 3407 } 3408 3409 /** 3410 * Add the item specified by dragInfo to the given layout. 3411 * @return true if successful 3412 */ 3413 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 3414 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 3415 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 3416 return true; 3417 } 3418 mLauncher.showOutOfSpaceMessage(mLauncher.isHotseatLayout(layout)); 3419 return false; 3420 } 3421 3422 private void onDropExternal(int[] touchXY, Object dragInfo, 3423 CellLayout cellLayout, boolean insertAtFirst) { 3424 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 3425 } 3426 3427 /** 3428 * Drop an item that didn't originate on one of the workspace screens. 3429 * It may have come from Launcher (e.g. from all apps or customize), or it may have 3430 * come from another app altogether. 3431 * 3432 * NOTE: This can also be called when we are outside of a drag event, when we want 3433 * to add an item to one of the workspace screens. 3434 */ 3435 private void onDropExternal(final int[] touchXY, final Object dragInfo, 3436 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 3437 final Runnable exitSpringLoadedRunnable = new Runnable() { 3438 @Override 3439 public void run() { 3440 mLauncher.exitSpringLoadedDragModeDelayed(true, 3441 Launcher.EXIT_SPRINGLOADED_MODE_SHORT_TIMEOUT, null); 3442 } 3443 }; 3444 3445 ItemInfo info = (ItemInfo) dragInfo; 3446 int spanX = info.spanX; 3447 int spanY = info.spanY; 3448 if (mDragInfo != null) { 3449 spanX = mDragInfo.spanX; 3450 spanY = mDragInfo.spanY; 3451 } 3452 3453 final long container = mLauncher.isHotseatLayout(cellLayout) ? 3454 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 3455 LauncherSettings.Favorites.CONTAINER_DESKTOP; 3456 final long screenId = getIdForScreen(cellLayout); 3457 if (!mLauncher.isHotseatLayout(cellLayout) 3458 && screenId != getScreenIdForPageIndex(mCurrentPage) 3459 && mState != State.SPRING_LOADED) { 3460 snapToScreenId(screenId, null); 3461 } 3462 3463 if (info instanceof PendingAddItemInfo) { 3464 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 3465 3466 boolean findNearestVacantCell = true; 3467 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 3468 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3469 cellLayout, mTargetCell); 3470 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3471 mDragViewVisualCenter[1], mTargetCell); 3472 if (willCreateUserFolder((ItemInfo) d.dragInfo, cellLayout, mTargetCell, 3473 distance, true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 3474 cellLayout, mTargetCell, distance)) { 3475 findNearestVacantCell = false; 3476 } 3477 } 3478 3479 final ItemInfo item = (ItemInfo) d.dragInfo; 3480 boolean updateWidgetSize = false; 3481 if (findNearestVacantCell) { 3482 int minSpanX = item.spanX; 3483 int minSpanY = item.spanY; 3484 if (item.minSpanX > 0 && item.minSpanY > 0) { 3485 minSpanX = item.minSpanX; 3486 minSpanY = item.minSpanY; 3487 } 3488 int[] resultSpan = new int[2]; 3489 mTargetCell = cellLayout.performReorder((int) mDragViewVisualCenter[0], 3490 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, info.spanX, info.spanY, 3491 null, mTargetCell, resultSpan, CellLayout.MODE_ON_DROP_EXTERNAL); 3492 3493 if (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY) { 3494 updateWidgetSize = true; 3495 } 3496 item.spanX = resultSpan[0]; 3497 item.spanY = resultSpan[1]; 3498 } 3499 3500 Runnable onAnimationCompleteRunnable = new Runnable() { 3501 @Override 3502 public void run() { 3503 // Normally removeExtraEmptyScreen is called in Workspace#onDragEnd, but when 3504 // adding an item that may not be dropped right away (due to a config activity) 3505 // we defer the removal until the activity returns. 3506 deferRemoveExtraEmptyScreen(); 3507 3508 // When dragging and dropping from customization tray, we deal with creating 3509 // widgets/shortcuts/folders in a slightly different way 3510 mLauncher.addPendingItem(pendingInfo, container, screenId, mTargetCell, 3511 item.spanX, item.spanY); 3512 } 3513 }; 3514 boolean isWidget = pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET 3515 || pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_CUSTOM_APPWIDGET; 3516 3517 AppWidgetHostView finalView = isWidget ? 3518 ((PendingAddWidgetInfo) pendingInfo).boundWidget : null; 3519 3520 if (finalView != null && updateWidgetSize) { 3521 AppWidgetResizeFrame.updateWidgetSizeRanges(finalView, mLauncher, item.spanX, 3522 item.spanY); 3523 } 3524 3525 int animationStyle = ANIMATE_INTO_POSITION_AND_DISAPPEAR; 3526 if (isWidget && ((PendingAddWidgetInfo) pendingInfo).info != null && 3527 ((PendingAddWidgetInfo) pendingInfo).info.configure != null) { 3528 animationStyle = ANIMATE_INTO_POSITION_AND_REMAIN; 3529 } 3530 animateWidgetDrop(info, cellLayout, d.dragView, onAnimationCompleteRunnable, 3531 animationStyle, finalView, true); 3532 } else { 3533 // This is for other drag/drop cases, like dragging from All Apps 3534 View view = null; 3535 3536 switch (info.itemType) { 3537 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 3538 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3539 if (info.container == NO_ID && info instanceof AppInfo) { 3540 // Came from all apps -- make a copy 3541 info = ((AppInfo) info).makeShortcut(); 3542 } 3543 view = mLauncher.createShortcut(cellLayout, (ShortcutInfo) info); 3544 break; 3545 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 3546 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 3547 (FolderInfo) info, mIconCache); 3548 break; 3549 default: 3550 throw new IllegalStateException("Unknown item type: " + info.itemType); 3551 } 3552 3553 // First we find the cell nearest to point at which the item is 3554 // dropped, without any consideration to whether there is an item there. 3555 if (touchXY != null) { 3556 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3557 cellLayout, mTargetCell); 3558 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3559 mDragViewVisualCenter[1], mTargetCell); 3560 d.postAnimationRunnable = exitSpringLoadedRunnable; 3561 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, distance, 3562 true, d.dragView, d.postAnimationRunnable)) { 3563 return; 3564 } 3565 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, distance, d, 3566 true)) { 3567 return; 3568 } 3569 } 3570 3571 if (touchXY != null) { 3572 // when dragging and dropping, just find the closest free spot 3573 mTargetCell = cellLayout.performReorder((int) mDragViewVisualCenter[0], 3574 (int) mDragViewVisualCenter[1], 1, 1, 1, 1, 3575 null, mTargetCell, null, CellLayout.MODE_ON_DROP_EXTERNAL); 3576 } else { 3577 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3578 } 3579 // Add the item to DB before adding to screen ensures that the container and other 3580 // values of the info is properly updated. 3581 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screenId, 3582 mTargetCell[0], mTargetCell[1]); 3583 3584 addInScreen(view, container, screenId, mTargetCell[0], mTargetCell[1], info.spanX, 3585 info.spanY, insertAtFirst); 3586 cellLayout.onDropChild(view); 3587 cellLayout.getShortcutsAndWidgets().measureChild(view); 3588 3589 if (d.dragView != null) { 3590 // We wrap the animation call in the temporary set and reset of the current 3591 // cellLayout to its final transform -- this means we animate the drag view to 3592 // the correct final location. 3593 setFinalTransitionTransform(cellLayout); 3594 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 3595 exitSpringLoadedRunnable, this); 3596 resetTransitionTransform(cellLayout); 3597 } 3598 } 3599 } 3600 3601 public Bitmap createWidgetBitmap(ItemInfo widgetInfo, View layout) { 3602 int[] unScaledSize = mLauncher.getWorkspace().estimateItemSize(widgetInfo, false); 3603 int visibility = layout.getVisibility(); 3604 layout.setVisibility(VISIBLE); 3605 3606 int width = MeasureSpec.makeMeasureSpec(unScaledSize[0], MeasureSpec.EXACTLY); 3607 int height = MeasureSpec.makeMeasureSpec(unScaledSize[1], MeasureSpec.EXACTLY); 3608 Bitmap b = Bitmap.createBitmap(unScaledSize[0], unScaledSize[1], 3609 Bitmap.Config.ARGB_8888); 3610 mCanvas.setBitmap(b); 3611 3612 layout.measure(width, height); 3613 layout.layout(0, 0, unScaledSize[0], unScaledSize[1]); 3614 layout.draw(mCanvas); 3615 mCanvas.setBitmap(null); 3616 layout.setVisibility(visibility); 3617 return b; 3618 } 3619 3620 private void getFinalPositionForDropAnimation(int[] loc, float[] scaleXY, 3621 DragView dragView, CellLayout layout, ItemInfo info, int[] targetCell, boolean scale) { 3622 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 3623 // location and size on the home screen. 3624 int spanX = info.spanX; 3625 int spanY = info.spanY; 3626 3627 Rect r = estimateItemPosition(layout, targetCell[0], targetCell[1], spanX, spanY); 3628 loc[0] = r.left; 3629 loc[1] = r.top; 3630 3631 setFinalTransitionTransform(layout); 3632 float cellLayoutScale = 3633 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(layout, loc, true); 3634 resetTransitionTransform(layout); 3635 3636 float dragViewScaleX; 3637 float dragViewScaleY; 3638 if (scale) { 3639 dragViewScaleX = (1.0f * r.width()) / dragView.getMeasuredWidth(); 3640 dragViewScaleY = (1.0f * r.height()) / dragView.getMeasuredHeight(); 3641 } else { 3642 dragViewScaleX = 1f; 3643 dragViewScaleY = 1f; 3644 } 3645 3646 // The animation will scale the dragView about its center, so we need to center about 3647 // the final location. 3648 loc[0] -= (dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2 3649 - Math.ceil(layout.getUnusedHorizontalSpace() / 2f); 3650 loc[1] -= (dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 3651 3652 scaleXY[0] = dragViewScaleX * cellLayoutScale; 3653 scaleXY[1] = dragViewScaleY * cellLayoutScale; 3654 } 3655 3656 public void animateWidgetDrop(ItemInfo info, CellLayout cellLayout, final DragView dragView, 3657 final Runnable onCompleteRunnable, int animationType, final View finalView, 3658 boolean external) { 3659 Rect from = new Rect(); 3660 mLauncher.getDragLayer().getViewRectRelativeToSelf(dragView, from); 3661 3662 int[] finalPos = new int[2]; 3663 float scaleXY[] = new float[2]; 3664 boolean scalePreview = !(info instanceof PendingAddShortcutInfo); 3665 getFinalPositionForDropAnimation(finalPos, scaleXY, dragView, cellLayout, info, mTargetCell, 3666 scalePreview); 3667 3668 Resources res = mLauncher.getResources(); 3669 final int duration = res.getInteger(R.integer.config_dropAnimMaxDuration) - 200; 3670 3671 boolean isWidget = info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET || 3672 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_CUSTOM_APPWIDGET; 3673 if ((animationType == ANIMATE_INTO_POSITION_AND_RESIZE || external) && finalView != null) { 3674 Bitmap crossFadeBitmap = createWidgetBitmap(info, finalView); 3675 dragView.setCrossFadeBitmap(crossFadeBitmap); 3676 dragView.crossFade((int) (duration * 0.8f)); 3677 } else if (isWidget && external) { 3678 scaleXY[0] = scaleXY[1] = Math.min(scaleXY[0], scaleXY[1]); 3679 } 3680 3681 DragLayer dragLayer = mLauncher.getDragLayer(); 3682 if (animationType == CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION) { 3683 mLauncher.getDragLayer().animateViewIntoPosition(dragView, finalPos, 0f, 0.1f, 0.1f, 3684 DragLayer.ANIMATION_END_DISAPPEAR, onCompleteRunnable, duration); 3685 } else { 3686 int endStyle; 3687 if (animationType == ANIMATE_INTO_POSITION_AND_REMAIN) { 3688 endStyle = DragLayer.ANIMATION_END_REMAIN_VISIBLE; 3689 } else { 3690 endStyle = DragLayer.ANIMATION_END_DISAPPEAR; 3691 } 3692 3693 Runnable onComplete = new Runnable() { 3694 @Override 3695 public void run() { 3696 if (finalView != null) { 3697 finalView.setVisibility(VISIBLE); 3698 } 3699 if (onCompleteRunnable != null) { 3700 onCompleteRunnable.run(); 3701 } 3702 } 3703 }; 3704 dragLayer.animateViewIntoPosition(dragView, from.left, from.top, finalPos[0], 3705 finalPos[1], 1, 1, 1, scaleXY[0], scaleXY[1], onComplete, endStyle, 3706 duration, this); 3707 } 3708 } 3709 3710 public void setFinalTransitionTransform(CellLayout layout) { 3711 if (isSwitchingState()) { 3712 mCurrentScale = getScaleX(); 3713 setScaleX(mStateTransitionAnimation.getFinalScale()); 3714 setScaleY(mStateTransitionAnimation.getFinalScale()); 3715 } 3716 } 3717 public void resetTransitionTransform(CellLayout layout) { 3718 if (isSwitchingState()) { 3719 setScaleX(mCurrentScale); 3720 setScaleY(mCurrentScale); 3721 } 3722 } 3723 3724 /** 3725 * Return the current {@link CellLayout}, correctly picking the destination 3726 * screen while a scroll is in progress. 3727 */ 3728 public CellLayout getCurrentDropLayout() { 3729 return (CellLayout) getChildAt(getNextPage()); 3730 } 3731 3732 /** 3733 * Return the current CellInfo describing our current drag; this method exists 3734 * so that Launcher can sync this object with the correct info when the activity is created/ 3735 * destroyed 3736 * 3737 */ 3738 public CellLayout.CellInfo getDragInfo() { 3739 return mDragInfo; 3740 } 3741 3742 public int getCurrentPageOffsetFromCustomContent() { 3743 return getNextPage() - numCustomPages(); 3744 } 3745 3746 /** 3747 * Calculate the nearest cell where the given object would be dropped. 3748 * 3749 * pixelX and pixelY should be in the coordinate system of layout 3750 */ 3751 @Thunk int[] findNearestArea(int pixelX, int pixelY, 3752 int spanX, int spanY, CellLayout layout, int[] recycle) { 3753 return layout.findNearestArea( 3754 pixelX, pixelY, spanX, spanY, recycle); 3755 } 3756 3757 void setup(DragController dragController) { 3758 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3759 mDragController = dragController; 3760 3761 // hardware layers on children are enabled on startup, but should be disabled until 3762 // needed 3763 updateChildrenLayersEnabled(false); 3764 } 3765 3766 /** 3767 * Called at the end of a drag which originated on the workspace. 3768 */ 3769 public void onDropCompleted(final View target, final DragObject d, 3770 final boolean isFlingToDelete, final boolean success) { 3771 if (mDeferDropAfterUninstall) { 3772 mDeferredAction = new Runnable() { 3773 public void run() { 3774 onDropCompleted(target, d, isFlingToDelete, success); 3775 mDeferredAction = null; 3776 } 3777 }; 3778 return; 3779 } 3780 3781 boolean beingCalledAfterUninstall = mDeferredAction != null; 3782 3783 if (success && !(beingCalledAfterUninstall && !mUninstallSuccessful)) { 3784 if (target != this && mDragInfo != null) { 3785 removeWorkspaceItem(mDragInfo.cell); 3786 } 3787 } else if (mDragInfo != null) { 3788 final CellLayout cellLayout = mLauncher.getCellLayout( 3789 mDragInfo.container, mDragInfo.screenId); 3790 if (cellLayout != null) { 3791 cellLayout.onDropChild(mDragInfo.cell); 3792 } else if (LauncherAppState.isDogfoodBuild()) { 3793 throw new RuntimeException("Invalid state: cellLayout == null in " 3794 + "Workspace#onDropCompleted. Please file a bug. "); 3795 }; 3796 } 3797 if ((d.cancelled || (beingCalledAfterUninstall && !mUninstallSuccessful)) 3798 && mDragInfo.cell != null) { 3799 mDragInfo.cell.setVisibility(VISIBLE); 3800 } 3801 mDragOutline = null; 3802 mDragInfo = null; 3803 } 3804 3805 /** 3806 * For opposite operation. See {@link #addInScreen}. 3807 */ 3808 public void removeWorkspaceItem(View v) { 3809 CellLayout parentCell = getParentCellLayoutForView(v); 3810 if (parentCell != null) { 3811 parentCell.removeView(v); 3812 } else if (LauncherAppState.isDogfoodBuild()) { 3813 // When an app is uninstalled using the drop target, we wait until resume to remove 3814 // the icon. We also remove all the corresponding items from the workspace at 3815 // {@link Launcher#bindComponentsRemoved}. That call can come before or after 3816 // {@link Launcher#mOnResumeCallbacks} depending on how busy the worker thread is. 3817 Log.e(TAG, "mDragInfo.cell has null parent"); 3818 } 3819 if (v instanceof DropTarget) { 3820 mDragController.removeDropTarget((DropTarget) v); 3821 } 3822 } 3823 3824 @Override 3825 public void deferCompleteDropAfterUninstallActivity() { 3826 mDeferDropAfterUninstall = true; 3827 } 3828 3829 /// maybe move this into a smaller part 3830 @Override 3831 public void onUninstallActivityReturned(boolean success) { 3832 mDeferDropAfterUninstall = false; 3833 mUninstallSuccessful = success; 3834 if (mDeferredAction != null) { 3835 mDeferredAction.run(); 3836 } 3837 } 3838 3839 void updateItemLocationsInDatabase(CellLayout cl) { 3840 int count = cl.getShortcutsAndWidgets().getChildCount(); 3841 3842 long screenId = getIdForScreen(cl); 3843 int container = Favorites.CONTAINER_DESKTOP; 3844 3845 if (mLauncher.isHotseatLayout(cl)) { 3846 screenId = -1; 3847 container = Favorites.CONTAINER_HOTSEAT; 3848 } 3849 3850 for (int i = 0; i < count; i++) { 3851 View v = cl.getShortcutsAndWidgets().getChildAt(i); 3852 ItemInfo info = (ItemInfo) v.getTag(); 3853 // Null check required as the AllApps button doesn't have an item info 3854 if (info != null && info.requiresDbUpdate) { 3855 info.requiresDbUpdate = false; 3856 LauncherModel.modifyItemInDatabase(mLauncher, info, container, screenId, info.cellX, 3857 info.cellY, info.spanX, info.spanY); 3858 } 3859 } 3860 } 3861 3862 void saveWorkspaceToDb() { 3863 saveWorkspaceScreenToDb((CellLayout) mLauncher.getHotseat().getLayout()); 3864 int count = getChildCount(); 3865 for (int i = 0; i < count; i++) { 3866 CellLayout cl = (CellLayout) getChildAt(i); 3867 saveWorkspaceScreenToDb(cl); 3868 } 3869 } 3870 3871 void saveWorkspaceScreenToDb(CellLayout cl) { 3872 int count = cl.getShortcutsAndWidgets().getChildCount(); 3873 3874 long screenId = getIdForScreen(cl); 3875 int container = Favorites.CONTAINER_DESKTOP; 3876 3877 Hotseat hotseat = mLauncher.getHotseat(); 3878 if (mLauncher.isHotseatLayout(cl)) { 3879 screenId = -1; 3880 container = Favorites.CONTAINER_HOTSEAT; 3881 } 3882 3883 for (int i = 0; i < count; i++) { 3884 View v = cl.getShortcutsAndWidgets().getChildAt(i); 3885 ItemInfo info = (ItemInfo) v.getTag(); 3886 // Null check required as the AllApps button doesn't have an item info 3887 if (info != null) { 3888 int cellX = info.cellX; 3889 int cellY = info.cellY; 3890 if (container == Favorites.CONTAINER_HOTSEAT) { 3891 cellX = hotseat.getCellXFromOrder((int) info.screenId); 3892 cellY = hotseat.getCellYFromOrder((int) info.screenId); 3893 } 3894 LauncherModel.addItemToDatabase(mLauncher, info, container, screenId, cellX, cellY); 3895 } 3896 if (v instanceof FolderIcon) { 3897 FolderIcon fi = (FolderIcon) v; 3898 fi.getFolder().addItemLocationsInDatabase(); 3899 } 3900 } 3901 } 3902 3903 @Override 3904 public float getIntrinsicIconScaleFactor() { 3905 return 1f; 3906 } 3907 3908 @Override 3909 public boolean supportsFlingToDelete() { 3910 return true; 3911 } 3912 3913 @Override 3914 public boolean supportsAppInfoDropTarget() { 3915 return false; 3916 } 3917 3918 @Override 3919 public boolean supportsDeleteDropTarget() { 3920 return true; 3921 } 3922 3923 @Override 3924 public void onFlingToDelete(DragObject d, PointF vec) { 3925 // Do nothing 3926 } 3927 3928 @Override 3929 public void onFlingToDeleteCompleted() { 3930 // Do nothing 3931 } 3932 3933 public boolean isDropEnabled() { 3934 return true; 3935 } 3936 3937 @Override 3938 protected void dispatchRestoreInstanceState(SparseArray<Parcelable> container) { 3939 // We don't dispatch restoreInstanceState to our children using this code path. 3940 // Some pages will be restored immediately as their items are bound immediately, and 3941 // others we will need to wait until after their items are bound. 3942 mSavedStates = container; 3943 } 3944 3945 public void restoreInstanceStateForChild(int child) { 3946 if (mSavedStates != null) { 3947 mRestoredPages.add(child); 3948 CellLayout cl = (CellLayout) getChildAt(child); 3949 if (cl != null) { 3950 cl.restoreInstanceState(mSavedStates); 3951 } 3952 } 3953 } 3954 3955 public void restoreInstanceStateForRemainingPages() { 3956 int count = getChildCount(); 3957 for (int i = 0; i < count; i++) { 3958 if (!mRestoredPages.contains(i)) { 3959 restoreInstanceStateForChild(i); 3960 } 3961 } 3962 mRestoredPages.clear(); 3963 mSavedStates = null; 3964 } 3965 3966 @Override 3967 public void scrollLeft() { 3968 if (!workspaceInModalState() && !mIsSwitchingState) { 3969 super.scrollLeft(); 3970 } 3971 Folder openFolder = getOpenFolder(); 3972 if (openFolder != null) { 3973 openFolder.completeDragExit(); 3974 } 3975 } 3976 3977 @Override 3978 public void scrollRight() { 3979 if (!workspaceInModalState() && !mIsSwitchingState) { 3980 super.scrollRight(); 3981 } 3982 Folder openFolder = getOpenFolder(); 3983 if (openFolder != null) { 3984 openFolder.completeDragExit(); 3985 } 3986 } 3987 3988 @Override 3989 public boolean onEnterScrollArea(int x, int y, int direction) { 3990 // Ignore the scroll area if we are dragging over the hot seat 3991 boolean isPortrait = !mLauncher.getDeviceProfile().isLandscape; 3992 if (mLauncher.getHotseat() != null && isPortrait) { 3993 Rect r = new Rect(); 3994 mLauncher.getHotseat().getHitRect(r); 3995 if (r.contains(x, y)) { 3996 return false; 3997 } 3998 } 3999 4000 boolean result = false; 4001 if (!workspaceInModalState() && !mIsSwitchingState && getOpenFolder() == null) { 4002 mInScrollArea = true; 4003 4004 final int page = getNextPage() + 4005 (direction == DragController.SCROLL_LEFT ? -1 : 1); 4006 // We always want to exit the current layout to ensure parity of enter / exit 4007 setCurrentDropLayout(null); 4008 4009 if (0 <= page && page < getChildCount()) { 4010 // Ensure that we are not dragging over to the custom content screen 4011 if (getScreenIdForPageIndex(page) == CUSTOM_CONTENT_SCREEN_ID) { 4012 return false; 4013 } 4014 4015 CellLayout layout = (CellLayout) getChildAt(page); 4016 setCurrentDragOverlappingLayout(layout); 4017 4018 // Workspace is responsible for drawing the edge glow on adjacent pages, 4019 // so we need to redraw the workspace when this may have changed. 4020 invalidate(); 4021 result = true; 4022 } 4023 } 4024 return result; 4025 } 4026 4027 @Override 4028 public boolean onExitScrollArea() { 4029 boolean result = false; 4030 if (mInScrollArea) { 4031 invalidate(); 4032 CellLayout layout = getCurrentDropLayout(); 4033 setCurrentDropLayout(layout); 4034 setCurrentDragOverlappingLayout(layout); 4035 4036 result = true; 4037 mInScrollArea = false; 4038 } 4039 return result; 4040 } 4041 4042 private void onResetScrollArea() { 4043 setCurrentDragOverlappingLayout(null); 4044 mInScrollArea = false; 4045 } 4046 4047 /** 4048 * Returns a specific CellLayout 4049 */ 4050 CellLayout getParentCellLayoutForView(View v) { 4051 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 4052 for (CellLayout layout : layouts) { 4053 if (layout.getShortcutsAndWidgets().indexOfChild(v) > -1) { 4054 return layout; 4055 } 4056 } 4057 return null; 4058 } 4059 4060 /** 4061 * Returns a list of all the CellLayouts in the workspace. 4062 */ 4063 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 4064 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 4065 int screenCount = getChildCount(); 4066 for (int screen = 0; screen < screenCount; screen++) { 4067 layouts.add(((CellLayout) getChildAt(screen))); 4068 } 4069 if (mLauncher.getHotseat() != null) { 4070 layouts.add(mLauncher.getHotseat().getLayout()); 4071 } 4072 return layouts; 4073 } 4074 4075 /** 4076 * We should only use this to search for specific children. Do not use this method to modify 4077 * ShortcutsAndWidgetsContainer directly. Includes ShortcutAndWidgetContainers from 4078 * the hotseat and workspace pages 4079 */ 4080 ArrayList<ShortcutAndWidgetContainer> getAllShortcutAndWidgetContainers() { 4081 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 4082 new ArrayList<ShortcutAndWidgetContainer>(); 4083 int screenCount = getChildCount(); 4084 for (int screen = 0; screen < screenCount; screen++) { 4085 childrenLayouts.add(((CellLayout) getChildAt(screen)).getShortcutsAndWidgets()); 4086 } 4087 if (mLauncher.getHotseat() != null) { 4088 childrenLayouts.add(mLauncher.getHotseat().getLayout().getShortcutsAndWidgets()); 4089 } 4090 return childrenLayouts; 4091 } 4092 4093 public Folder getFolderForTag(final Object tag) { 4094 return (Folder) getFirstMatch(new ItemOperator() { 4095 4096 @Override 4097 public boolean evaluate(ItemInfo info, View v, View parent) { 4098 return (v instanceof Folder) && (((Folder) v).getInfo() == tag) 4099 && ((Folder) v).getInfo().opened; 4100 } 4101 }); 4102 } 4103 4104 public View getHomescreenIconByItemId(final long id) { 4105 return getFirstMatch(new ItemOperator() { 4106 4107 @Override 4108 public boolean evaluate(ItemInfo info, View v, View parent) { 4109 return info != null && info.id == id; 4110 } 4111 }); 4112 } 4113 4114 public View getViewForTag(final Object tag) { 4115 return getFirstMatch(new ItemOperator() { 4116 4117 @Override 4118 public boolean evaluate(ItemInfo info, View v, View parent) { 4119 return info == tag; 4120 } 4121 }); 4122 } 4123 4124 public LauncherAppWidgetHostView getWidgetForAppWidgetId(final int appWidgetId) { 4125 return (LauncherAppWidgetHostView) getFirstMatch(new ItemOperator() { 4126 4127 @Override 4128 public boolean evaluate(ItemInfo info, View v, View parent) { 4129 return (info instanceof LauncherAppWidgetInfo) && 4130 ((LauncherAppWidgetInfo) info).appWidgetId == appWidgetId; 4131 } 4132 }); 4133 } 4134 4135 private View getFirstMatch(final ItemOperator operator) { 4136 final View[] value = new View[1]; 4137 mapOverItems(MAP_NO_RECURSE, new ItemOperator() { 4138 @Override 4139 public boolean evaluate(ItemInfo info, View v, View parent) { 4140 if (operator.evaluate(info, v, parent)) { 4141 value[0] = v; 4142 return true; 4143 } 4144 return false; 4145 } 4146 }); 4147 return value[0]; 4148 } 4149 4150 void clearDropTargets() { 4151 mapOverItems(MAP_NO_RECURSE, new ItemOperator() { 4152 @Override 4153 public boolean evaluate(ItemInfo info, View v, View parent) { 4154 if (v instanceof DropTarget) { 4155 mDragController.removeDropTarget((DropTarget) v); 4156 } 4157 // not done, process all the shortcuts 4158 return false; 4159 } 4160 }); 4161 } 4162 4163 public void disableShortcutsByPackageName(final ArrayList<String> packages, 4164 final UserHandleCompat user, final int reason) { 4165 final HashSet<String> packageNames = new HashSet<String>(); 4166 packageNames.addAll(packages); 4167 4168 mapOverItems(MAP_RECURSE, new ItemOperator() { 4169 @Override 4170 public boolean evaluate(ItemInfo info, View v, View parent) { 4171 if (info instanceof ShortcutInfo && v instanceof BubbleTextView) { 4172 ShortcutInfo shortcutInfo = (ShortcutInfo) info; 4173 ComponentName cn = shortcutInfo.getTargetComponent(); 4174 if (user.equals(shortcutInfo.user) && cn != null 4175 && packageNames.contains(cn.getPackageName())) { 4176 shortcutInfo.isDisabled |= reason; 4177 BubbleTextView shortcut = (BubbleTextView) v; 4178 shortcut.applyFromShortcutInfo(shortcutInfo, mIconCache); 4179 4180 if (parent != null) { 4181 parent.invalidate(); 4182 } 4183 } 4184 } 4185 // process all the shortcuts 4186 return false; 4187 } 4188 }); 4189 } 4190 4191 // Removes ALL items that match a given package name, this is usually called when a package 4192 // has been removed and we want to remove all components (widgets, shortcuts, apps) that 4193 // belong to that package. 4194 void removeItemsByPackageName(final ArrayList<String> packages, final UserHandleCompat user) { 4195 final HashSet<String> packageNames = new HashSet<String>(); 4196 packageNames.addAll(packages); 4197 4198 // Filter out all the ItemInfos that this is going to affect 4199 final HashSet<ItemInfo> infos = new HashSet<ItemInfo>(); 4200 final HashSet<ComponentName> cns = new HashSet<ComponentName>(); 4201 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 4202 for (CellLayout layoutParent : cellLayouts) { 4203 ViewGroup layout = layoutParent.getShortcutsAndWidgets(); 4204 int childCount = layout.getChildCount(); 4205 for (int i = 0; i < childCount; ++i) { 4206 View view = layout.getChildAt(i); 4207 infos.add((ItemInfo) view.getTag()); 4208 } 4209 } 4210 LauncherModel.ItemInfoFilter filter = new LauncherModel.ItemInfoFilter() { 4211 @Override 4212 public boolean filterItem(ItemInfo parent, ItemInfo info, 4213 ComponentName cn) { 4214 if (packageNames.contains(cn.getPackageName()) 4215 && info.user.equals(user)) { 4216 cns.add(cn); 4217 return true; 4218 } 4219 return false; 4220 } 4221 }; 4222 LauncherModel.filterItemInfos(infos, filter); 4223 4224 // Remove the affected components 4225 removeItemsByComponentName(cns, user); 4226 } 4227 4228 /** 4229 * Removes items that match the item info specified. When applications are removed 4230 * as a part of an update, this is called to ensure that other widgets and application 4231 * shortcuts are not removed. 4232 */ 4233 void removeItemsByComponentName(final HashSet<ComponentName> componentNames, 4234 final UserHandleCompat user) { 4235 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 4236 for (final CellLayout layoutParent: cellLayouts) { 4237 final ViewGroup layout = layoutParent.getShortcutsAndWidgets(); 4238 4239 final HashMap<ItemInfo, View> children = new HashMap<ItemInfo, View>(); 4240 for (int j = 0; j < layout.getChildCount(); j++) { 4241 final View view = layout.getChildAt(j); 4242 children.put((ItemInfo) view.getTag(), view); 4243 } 4244 4245 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 4246 final HashMap<FolderInfo, ArrayList<ShortcutInfo>> folderAppsToRemove = 4247 new HashMap<FolderInfo, ArrayList<ShortcutInfo>>(); 4248 LauncherModel.ItemInfoFilter filter = new LauncherModel.ItemInfoFilter() { 4249 @Override 4250 public boolean filterItem(ItemInfo parent, ItemInfo info, 4251 ComponentName cn) { 4252 if (parent instanceof FolderInfo) { 4253 if (componentNames.contains(cn) && info.user.equals(user)) { 4254 FolderInfo folder = (FolderInfo) parent; 4255 ArrayList<ShortcutInfo> appsToRemove; 4256 if (folderAppsToRemove.containsKey(folder)) { 4257 appsToRemove = folderAppsToRemove.get(folder); 4258 } else { 4259 appsToRemove = new ArrayList<ShortcutInfo>(); 4260 folderAppsToRemove.put(folder, appsToRemove); 4261 } 4262 appsToRemove.add((ShortcutInfo) info); 4263 return true; 4264 } 4265 } else { 4266 if (componentNames.contains(cn) && info.user.equals(user)) { 4267 childrenToRemove.add(children.get(info)); 4268 return true; 4269 } 4270 } 4271 return false; 4272 } 4273 }; 4274 LauncherModel.filterItemInfos(children.keySet(), filter); 4275 4276 // Remove all the apps from their folders 4277 for (FolderInfo folder : folderAppsToRemove.keySet()) { 4278 ArrayList<ShortcutInfo> appsToRemove = folderAppsToRemove.get(folder); 4279 for (ShortcutInfo info : appsToRemove) { 4280 folder.remove(info); 4281 } 4282 } 4283 4284 // Remove all the other children 4285 for (View child : childrenToRemove) { 4286 // Note: We can not remove the view directly from CellLayoutChildren as this 4287 // does not re-mark the spaces as unoccupied. 4288 layoutParent.removeViewInLayout(child); 4289 if (child instanceof DropTarget) { 4290 mDragController.removeDropTarget((DropTarget) child); 4291 } 4292 } 4293 4294 if (childrenToRemove.size() > 0) { 4295 layout.requestLayout(); 4296 layout.invalidate(); 4297 } 4298 } 4299 4300 // Strip all the empty screens 4301 stripEmptyScreens(); 4302 } 4303 4304 interface ItemOperator { 4305 /** 4306 * Process the next itemInfo, possibly with side-effect on {@link ItemOperator#value}. 4307 * 4308 * @param info info for the shortcut 4309 * @param view view for the shortcut 4310 * @param parent containing folder, or null 4311 * @return true if done, false to continue the map 4312 */ 4313 public boolean evaluate(ItemInfo info, View view, View parent); 4314 } 4315 4316 /** 4317 * Map the operator over the shortcuts and widgets, return the first-non-null value. 4318 * 4319 * @param recurse true: iterate over folder children. false: op get the folders themselves. 4320 * @param op the operator to map over the shortcuts 4321 */ 4322 void mapOverItems(boolean recurse, ItemOperator op) { 4323 ArrayList<ShortcutAndWidgetContainer> containers = getAllShortcutAndWidgetContainers(); 4324 final int containerCount = containers.size(); 4325 for (int containerIdx = 0; containerIdx < containerCount; containerIdx++) { 4326 ShortcutAndWidgetContainer container = containers.get(containerIdx); 4327 // map over all the shortcuts on the workspace 4328 final int itemCount = container.getChildCount(); 4329 for (int itemIdx = 0; itemIdx < itemCount; itemIdx++) { 4330 View item = container.getChildAt(itemIdx); 4331 ItemInfo info = (ItemInfo) item.getTag(); 4332 if (recurse && info instanceof FolderInfo && item instanceof FolderIcon) { 4333 FolderIcon folder = (FolderIcon) item; 4334 ArrayList<View> folderChildren = folder.getFolder().getItemsInReadingOrder(); 4335 // map over all the children in the folder 4336 final int childCount = folderChildren.size(); 4337 for (int childIdx = 0; childIdx < childCount; childIdx++) { 4338 View child = folderChildren.get(childIdx); 4339 info = (ItemInfo) child.getTag(); 4340 if (op.evaluate(info, child, folder)) { 4341 return; 4342 } 4343 } 4344 } else { 4345 if (op.evaluate(info, item, null)) { 4346 return; 4347 } 4348 } 4349 } 4350 } 4351 } 4352 4353 void updateShortcuts(ArrayList<ShortcutInfo> shortcuts) { 4354 final HashSet<ShortcutInfo> updates = new HashSet<ShortcutInfo>(shortcuts); 4355 mapOverItems(MAP_RECURSE, new ItemOperator() { 4356 @Override 4357 public boolean evaluate(ItemInfo info, View v, View parent) { 4358 if (info instanceof ShortcutInfo && v instanceof BubbleTextView && 4359 updates.contains(info)) { 4360 ShortcutInfo si = (ShortcutInfo) info; 4361 BubbleTextView shortcut = (BubbleTextView) v; 4362 Drawable oldIcon = getTextViewIcon(shortcut); 4363 boolean oldPromiseState = (oldIcon instanceof PreloadIconDrawable) 4364 && ((PreloadIconDrawable) oldIcon).hasNotCompleted(); 4365 shortcut.applyFromShortcutInfo(si, mIconCache, 4366 si.isPromise() != oldPromiseState); 4367 4368 if (parent != null) { 4369 parent.invalidate(); 4370 } 4371 } 4372 // process all the shortcuts 4373 return false; 4374 } 4375 }); 4376 } 4377 4378 public void removeAbandonedPromise(String packageName, UserHandleCompat user) { 4379 ArrayList<String> packages = new ArrayList<String>(1); 4380 packages.add(packageName); 4381 LauncherModel.deletePackageFromDatabase(mLauncher, packageName, user); 4382 removeItemsByPackageName(packages, user); 4383 } 4384 4385 public void updateRestoreItems(final HashSet<ItemInfo> updates) { 4386 mapOverItems(MAP_RECURSE, new ItemOperator() { 4387 @Override 4388 public boolean evaluate(ItemInfo info, View v, View parent) { 4389 if (info instanceof ShortcutInfo && v instanceof BubbleTextView 4390 && updates.contains(info)) { 4391 ((BubbleTextView) v).applyState(false); 4392 } else if (v instanceof PendingAppWidgetHostView 4393 && info instanceof LauncherAppWidgetInfo 4394 && updates.contains(info)) { 4395 ((PendingAppWidgetHostView) v).applyState(); 4396 } 4397 // process all the shortcuts 4398 return false; 4399 } 4400 }); 4401 } 4402 4403 void widgetsRestored(ArrayList<LauncherAppWidgetInfo> changedInfo) { 4404 if (!changedInfo.isEmpty()) { 4405 DeferredWidgetRefresh widgetRefresh = new DeferredWidgetRefresh(changedInfo, 4406 mLauncher.getAppWidgetHost()); 4407 if (LauncherModel.getProviderInfo(getContext(), 4408 changedInfo.get(0).providerName, 4409 changedInfo.get(0).user) != null) { 4410 // Re-inflate the widgets which have changed status 4411 widgetRefresh.run(); 4412 } else { 4413 // widgetRefresh will automatically run when the packages are updated. 4414 // For now just update the progress bars 4415 for (LauncherAppWidgetInfo info : changedInfo) { 4416 if (info.hostView instanceof PendingAppWidgetHostView) { 4417 info.installProgress = 100; 4418 ((PendingAppWidgetHostView) info.hostView).applyState(); 4419 } 4420 } 4421 } 4422 } 4423 } 4424 4425 private void moveToScreen(int page, boolean animate) { 4426 if (!workspaceInModalState()) { 4427 if (animate) { 4428 snapToPage(page); 4429 } else { 4430 setCurrentPage(page); 4431 } 4432 } 4433 View child = getChildAt(page); 4434 if (child != null) { 4435 child.requestFocus(); 4436 } 4437 } 4438 4439 void moveToDefaultScreen(boolean animate) { 4440 moveToScreen(mDefaultPage, animate); 4441 } 4442 4443 void moveToCustomContentScreen(boolean animate) { 4444 if (hasCustomContent()) { 4445 int ccIndex = getPageIndexForScreenId(CUSTOM_CONTENT_SCREEN_ID); 4446 if (animate) { 4447 snapToPage(ccIndex); 4448 } else { 4449 setCurrentPage(ccIndex); 4450 } 4451 View child = getChildAt(ccIndex); 4452 if (child != null) { 4453 child.requestFocus(); 4454 } 4455 } 4456 exitWidgetResizeMode(); 4457 } 4458 4459 @Override 4460 protected PageIndicator.PageMarkerResources getPageIndicatorMarker(int pageIndex) { 4461 long screenId = getScreenIdForPageIndex(pageIndex); 4462 if (screenId == EXTRA_EMPTY_SCREEN_ID) { 4463 int count = mScreenOrder.size() - numCustomPages(); 4464 if (count > 1) { 4465 return new PageIndicator.PageMarkerResources(R.drawable.ic_pageindicator_current, 4466 R.drawable.ic_pageindicator_add); 4467 } 4468 } 4469 4470 return super.getPageIndicatorMarker(pageIndex); 4471 } 4472 4473 protected String getPageIndicatorDescription() { 4474 String settings = getResources().getString(R.string.settings_button_text); 4475 return getCurrentPageDescription() + ", " + settings; 4476 } 4477 4478 protected String getCurrentPageDescription() { 4479 if (hasCustomContent() && getNextPage() == 0) { 4480 return mCustomContentDescription; 4481 } 4482 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 4483 return getPageDescription(page); 4484 } 4485 4486 private String getPageDescription(int page) { 4487 int delta = numCustomPages(); 4488 int nScreens = getChildCount() - delta; 4489 int extraScreenId = mScreenOrder.indexOf(EXTRA_EMPTY_SCREEN_ID); 4490 if (extraScreenId >= 0 && nScreens > 1) { 4491 if (page == extraScreenId) { 4492 return getContext().getString(R.string.workspace_new_page); 4493 } 4494 nScreens--; 4495 } 4496 return String.format(getContext().getString(R.string.workspace_scroll_format), 4497 page + 1 - delta, nScreens); 4498 4499 } 4500 4501 public void getLocationInDragLayer(int[] loc) { 4502 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 4503 } 4504 4505 @Override 4506 public void fillInLaunchSourceData(View v, Bundle sourceData) { 4507 sourceData.putString(Stats.SOURCE_EXTRA_CONTAINER, Stats.CONTAINER_HOMESCREEN); 4508 sourceData.putInt(Stats.SOURCE_EXTRA_CONTAINER_PAGE, getCurrentPage()); 4509 } 4510 4511 /** 4512 * Used as a workaround to ensure that the AppWidgetService receives the 4513 * PACKAGE_ADDED broadcast before updating widgets. 4514 */ 4515 private class DeferredWidgetRefresh implements Runnable { 4516 private final ArrayList<LauncherAppWidgetInfo> mInfos; 4517 private final LauncherAppWidgetHost mHost; 4518 private final Handler mHandler; 4519 4520 private boolean mRefreshPending; 4521 4522 public DeferredWidgetRefresh(ArrayList<LauncherAppWidgetInfo> infos, 4523 LauncherAppWidgetHost host) { 4524 mInfos = infos; 4525 mHost = host; 4526 mHandler = new Handler(); 4527 mRefreshPending = true; 4528 4529 mHost.addProviderChangeListener(this); 4530 // Force refresh after 10 seconds, if we don't get the provider changed event. 4531 // This could happen when the provider is no longer available in the app. 4532 mHandler.postDelayed(this, 10000); 4533 } 4534 4535 @Override 4536 public void run() { 4537 mHost.removeProviderChangeListener(this); 4538 mHandler.removeCallbacks(this); 4539 4540 if (!mRefreshPending) { 4541 return; 4542 } 4543 4544 mRefreshPending = false; 4545 4546 for (LauncherAppWidgetInfo info : mInfos) { 4547 if (info.hostView instanceof PendingAppWidgetHostView) { 4548 // Remove and rebind the current widget, but don't delete it from the database 4549 PendingAppWidgetHostView view = (PendingAppWidgetHostView) info.hostView; 4550 mLauncher.removeItem(view, info, false /* deleteFromDb */); 4551 mLauncher.bindAppWidget(info); 4552 } 4553 } 4554 } 4555 } 4556} 4557