Workspace.java revision bfa8fbd782370c9d1f5b24f94dc29b74a31b28f0
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.AnimatorSet; 22import android.animation.LayoutTransition; 23import android.animation.ObjectAnimator; 24import android.animation.PropertyValuesHolder; 25import android.annotation.SuppressLint; 26import android.annotation.TargetApi; 27import android.app.WallpaperManager; 28import android.appwidget.AppWidgetHostView; 29import android.appwidget.AppWidgetProviderInfo; 30import android.content.ComponentName; 31import android.content.Context; 32import android.content.res.Resources; 33import android.graphics.Bitmap; 34import android.graphics.Canvas; 35import android.graphics.Matrix; 36import android.graphics.Paint; 37import android.graphics.Point; 38import android.graphics.PointF; 39import android.graphics.Rect; 40import android.graphics.Region.Op; 41import android.graphics.drawable.Drawable; 42import android.os.Build; 43import android.os.Handler; 44import android.os.IBinder; 45import android.os.Parcelable; 46import android.util.AttributeSet; 47import android.util.Log; 48import android.util.Property; 49import android.util.SparseArray; 50import android.view.MotionEvent; 51import android.view.View; 52import android.view.ViewDebug; 53import android.view.ViewGroup; 54import android.view.accessibility.AccessibilityManager; 55import android.view.animation.DecelerateInterpolator; 56import android.view.animation.Interpolator; 57import android.widget.TextView; 58 59import com.android.launcher3.Launcher.CustomContentCallbacks; 60import com.android.launcher3.Launcher.LauncherOverlay; 61import com.android.launcher3.UninstallDropTarget.DropTargetSource; 62import com.android.launcher3.accessibility.LauncherAccessibilityDelegate; 63import com.android.launcher3.accessibility.LauncherAccessibilityDelegate.AccessibilityDragSource; 64import com.android.launcher3.accessibility.OverviewScreenAccessibilityDelegate; 65import com.android.launcher3.accessibility.WorkspaceAccessibilityHelper; 66import com.android.launcher3.compat.AppWidgetManagerCompat; 67import com.android.launcher3.compat.UserHandleCompat; 68import com.android.launcher3.config.FeatureFlags; 69import com.android.launcher3.config.ProviderConfig; 70import com.android.launcher3.dragndrop.DragController; 71import com.android.launcher3.dragndrop.DragLayer; 72import com.android.launcher3.dragndrop.DragScroller; 73import com.android.launcher3.dragndrop.DragView; 74import com.android.launcher3.dragndrop.SpringLoadedDragController; 75import com.android.launcher3.folder.Folder; 76import com.android.launcher3.folder.FolderIcon; 77import com.android.launcher3.logging.UserEventDispatcher; 78import com.android.launcher3.pageindicators.PageIndicator; 79import com.android.launcher3.userevent.nano.LauncherLogProto; 80import com.android.launcher3.userevent.nano.LauncherLogProto.Target; 81import com.android.launcher3.util.LongArrayMap; 82import com.android.launcher3.util.Thunk; 83import com.android.launcher3.util.WallpaperOffsetInterpolator; 84import com.android.launcher3.widget.PendingAddShortcutInfo; 85import com.android.launcher3.widget.PendingAddWidgetInfo; 86 87import java.util.ArrayList; 88import java.util.HashMap; 89import java.util.HashSet; 90import java.util.concurrent.atomic.AtomicInteger; 91 92/** 93 * The workspace is a wide area with a wallpaper and a finite number of pages. 94 * Each page contains a number of icons, folders or widgets the user can 95 * interact with. A workspace is meant to be used with a fixed width only. 96 */ 97public class Workspace extends PagedView 98 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 99 DragController.DragListener, LauncherTransitionable, ViewGroup.OnHierarchyChangeListener, 100 Insettable, DropTargetSource, AccessibilityDragSource, UserEventDispatcher.LaunchSourceProvider { 101 private static final String TAG = "Launcher.Workspace"; 102 103 private static boolean ENFORCE_DRAG_EVENT_ORDER = false; 104 105 private static final int SNAP_OFF_EMPTY_SCREEN_DURATION = 400; 106 private static final int FADE_EMPTY_SCREEN_DURATION = 150; 107 108 private static final int ADJACENT_SCREEN_DROP_DURATION = 300; 109 110 private static final boolean MAP_NO_RECURSE = false; 111 private static final boolean MAP_RECURSE = true; 112 113 // The screen id used for the empty screen always present to the right. 114 public static final long EXTRA_EMPTY_SCREEN_ID = -201; 115 // The is the first screen. It is always present, even if its empty. 116 public static final long FIRST_SCREEN_ID = 0; 117 118 private final static long CUSTOM_CONTENT_SCREEN_ID = -301; 119 120 private static final long CUSTOM_CONTENT_GESTURE_DELAY = 200; 121 private long mTouchDownTime = -1; 122 private long mCustomContentShowTime = -1; 123 124 private LayoutTransition mLayoutTransition; 125 @Thunk final WallpaperManager mWallpaperManager; 126 127 private ShortcutAndWidgetContainer mDragSourceInternal; 128 129 @Thunk LongArrayMap<CellLayout> mWorkspaceScreens = new LongArrayMap<>(); 130 @Thunk ArrayList<Long> mScreenOrder = new ArrayList<Long>(); 131 132 @Thunk Runnable mRemoveEmptyScreenRunnable; 133 @Thunk boolean mDeferRemoveExtraEmptyScreen = false; 134 @Thunk boolean mAddNewPageOnDrag = true; 135 136 /** 137 * CellInfo for the cell that is currently being dragged 138 */ 139 private CellLayout.CellInfo mDragInfo; 140 141 /** 142 * Target drop area calculated during last acceptDrop call. 143 */ 144 @Thunk int[] mTargetCell = new int[2]; 145 private int mDragOverX = -1; 146 private int mDragOverY = -1; 147 148 CustomContentCallbacks mCustomContentCallbacks; 149 boolean mCustomContentShowing; 150 private float mLastCustomContentScrollProgress = -1f; 151 private String mCustomContentDescription = ""; 152 153 /** 154 * The CellLayout that is currently being dragged over 155 */ 156 @Thunk CellLayout mDragTargetLayout = null; 157 /** 158 * The CellLayout that we will show as highlighted 159 */ 160 private CellLayout mDragOverlappingLayout = null; 161 162 /** 163 * The CellLayout which will be dropped to 164 */ 165 private CellLayout mDropToLayout = null; 166 167 @Thunk Launcher mLauncher; 168 @Thunk IconCache mIconCache; 169 @Thunk DragController mDragController; 170 171 // These are temporary variables to prevent having to allocate a new object just to 172 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 173 private static final Rect sTempRect = new Rect(); 174 private final int[] mTempXY = new int[2]; 175 @Thunk float[] mDragViewVisualCenter = new float[2]; 176 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 177 private int[] mTempVisiblePagesRange = new int[2]; 178 private Matrix mTempMatrix = new Matrix(); 179 180 private SpringLoadedDragController mSpringLoadedDragController; 181 private float mOverviewModeShrinkFactor; 182 183 // State variable that indicates whether the pages are small (ie when you're 184 // in all apps or customize mode) 185 186 public enum State { 187 NORMAL (false, false), 188 NORMAL_HIDDEN (false, false), 189 SPRING_LOADED (false, true), 190 OVERVIEW (true, true), 191 OVERVIEW_HIDDEN (true, false); 192 193 public final boolean shouldUpdateWidget; 194 public final boolean hasMultipleVisiblePages; 195 196 State(boolean shouldUpdateWidget, boolean hasMultipleVisiblePages) { 197 this.shouldUpdateWidget = shouldUpdateWidget; 198 this.hasMultipleVisiblePages = hasMultipleVisiblePages; 199 } 200 } 201 202 // Direction used for moving the workspace and hotseat UI 203 public enum Direction { 204 X (TRANSLATION_X), 205 Y (TRANSLATION_Y); 206 207 private final Property<View, Float> viewProperty; 208 209 Direction(Property<View, Float> viewProperty) { 210 this.viewProperty = viewProperty; 211 } 212 } 213 214 private float[] mPageAlpha = new float[] {1, 1}; 215 private float[] mHotseatAlpha = new float[] {1, 1}; 216 217 @ViewDebug.ExportedProperty(category = "launcher") 218 private State mState = State.NORMAL; 219 private boolean mIsSwitchingState = false; 220 221 boolean mAnimatingViewIntoPlace = false; 222 boolean mChildrenLayersEnabled = true; 223 224 private boolean mStripScreensOnPageStopMoving = false; 225 226 /** Is the user is dragging an item near the edge of a page? */ 227 private boolean mInScrollArea = false; 228 229 private HolographicOutlineHelper mOutlineHelper; 230 @Thunk Bitmap mDragOutline = null; 231 public static final int DRAG_BITMAP_PADDING = 2; 232 private boolean mWorkspaceFadeInAdjacentScreens; 233 234 final WallpaperOffsetInterpolator mWallpaperOffset; 235 236 @Thunk Runnable mDelayedResizeRunnable; 237 private Runnable mDelayedSnapToPageRunnable; 238 239 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 240 private static final int FOLDER_CREATION_TIMEOUT = 0; 241 public static final int REORDER_TIMEOUT = 350; 242 private final Alarm mFolderCreationAlarm = new Alarm(); 243 private final Alarm mReorderAlarm = new Alarm(); 244 private FolderIcon.PreviewBackground mFolderCreateBg; 245 private FolderIcon mDragOverFolderIcon = null; 246 private boolean mCreateUserFolderOnDrop = false; 247 private boolean mAddToExistingFolderOnDrop = false; 248 private float mMaxDistanceForFolderCreation; 249 250 private final Canvas mCanvas = new Canvas(); 251 252 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 253 private float mXDown; 254 private float mYDown; 255 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 256 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 257 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 258 259 // Relating to the animation of items being dropped externally 260 public static final int ANIMATE_INTO_POSITION_AND_DISAPPEAR = 0; 261 public static final int ANIMATE_INTO_POSITION_AND_REMAIN = 1; 262 public static final int ANIMATE_INTO_POSITION_AND_RESIZE = 2; 263 public static final int COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION = 3; 264 public static final int CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION = 4; 265 266 // Related to dragging, folder creation and reordering 267 private static final int DRAG_MODE_NONE = 0; 268 private static final int DRAG_MODE_CREATE_FOLDER = 1; 269 private static final int DRAG_MODE_ADD_TO_FOLDER = 2; 270 private static final int DRAG_MODE_REORDER = 3; 271 private int mDragMode = DRAG_MODE_NONE; 272 @Thunk int mLastReorderX = -1; 273 @Thunk int mLastReorderY = -1; 274 275 private SparseArray<Parcelable> mSavedStates; 276 private final ArrayList<Integer> mRestoredPages = new ArrayList<Integer>(); 277 278 private float mCurrentScale; 279 private float mTransitionProgress; 280 281 @Thunk Runnable mDeferredAction; 282 private boolean mDeferDropAfterUninstall; 283 private boolean mUninstallSuccessful; 284 285 // State related to Launcher Overlay 286 LauncherOverlay mLauncherOverlay; 287 boolean mScrollInteractionBegan; 288 boolean mStartedSendingScrollEvents; 289 float mLastOverlaySroll = 0; 290 // Total over scrollX in the overlay direction. 291 private int mUnboundedScrollX; 292 private boolean mForceDrawAdjacentPages = false; 293 // Total over scrollX in the overlay direction. 294 private float mOverlayTranslation; 295 296 // Handles workspace state transitions 297 private WorkspaceStateTransitionAnimation mStateTransitionAnimation; 298 299 private AccessibilityDelegate mPagesAccessibilityDelegate; 300 private OnStateChangeListener mOnStateChangeListener; 301 302 /** 303 * Used to inflate the Workspace from XML. 304 * 305 * @param context The application's context. 306 * @param attrs The attributes set containing the Workspace's customization values. 307 */ 308 public Workspace(Context context, AttributeSet attrs) { 309 this(context, attrs, 0); 310 } 311 312 /** 313 * Used to inflate the Workspace from XML. 314 * 315 * @param context The application's context. 316 * @param attrs The attributes set containing the Workspace's customization values. 317 * @param defStyle Unused. 318 */ 319 public Workspace(Context context, AttributeSet attrs, int defStyle) { 320 super(context, attrs, defStyle); 321 322 mOutlineHelper = HolographicOutlineHelper.obtain(context); 323 324 mLauncher = (Launcher) context; 325 mStateTransitionAnimation = new WorkspaceStateTransitionAnimation(mLauncher, this); 326 final Resources res = getResources(); 327 DeviceProfile grid = mLauncher.getDeviceProfile(); 328 mWorkspaceFadeInAdjacentScreens = grid.shouldFadeAdjacentWorkspaceScreens(); 329 mFadeInAdjacentScreens = false; 330 mWallpaperManager = WallpaperManager.getInstance(context); 331 332 mWallpaperOffset = new WallpaperOffsetInterpolator(this); 333 mOverviewModeShrinkFactor = 334 res.getInteger(R.integer.config_workspaceOverviewShrinkPercentage) / 100f; 335 336 setOnHierarchyChangeListener(this); 337 setHapticFeedbackEnabled(false); 338 339 initWorkspace(); 340 341 // Disable multitouch across the workspace/all apps/customize tray 342 setMotionEventSplittingEnabled(true); 343 } 344 345 @Override 346 public void setInsets(Rect insets) { 347 mInsets.set(insets); 348 349 CellLayout customScreen = getScreenWithId(CUSTOM_CONTENT_SCREEN_ID); 350 if (customScreen != null) { 351 View customContent = customScreen.getShortcutsAndWidgets().getChildAt(0); 352 if (customContent instanceof Insettable) { 353 ((Insettable) customContent).setInsets(mInsets); 354 } 355 } 356 } 357 358 public void setOnStateChangeListener(OnStateChangeListener listener) { 359 mOnStateChangeListener = listener; 360 } 361 362 // estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each 363 // dimension if unsuccessful 364 public int[] estimateItemSize(ItemInfo itemInfo, boolean springLoaded) { 365 float shrinkFactor = mLauncher.getDeviceProfile().workspaceSpringLoadShrinkFactor; 366 int[] size = new int[2]; 367 if (getChildCount() > 0) { 368 // Use the first non-custom page to estimate the child position 369 CellLayout cl = (CellLayout) getChildAt(numCustomPages()); 370 Rect r = estimateItemPosition(cl, 0, 0, itemInfo.spanX, itemInfo.spanY); 371 size[0] = r.width(); 372 size[1] = r.height(); 373 if (springLoaded) { 374 size[0] *= shrinkFactor; 375 size[1] *= shrinkFactor; 376 } 377 return size; 378 } else { 379 size[0] = Integer.MAX_VALUE; 380 size[1] = Integer.MAX_VALUE; 381 return size; 382 } 383 } 384 385 public Rect estimateItemPosition(CellLayout cl, int hCell, int vCell, int hSpan, int vSpan) { 386 Rect r = new Rect(); 387 cl.cellToRect(hCell, vCell, hSpan, vSpan, r); 388 return r; 389 } 390 391 @Override 392 public void onDragStart(final DragSource source, ItemInfo info, int dragAction) { 393 if (ENFORCE_DRAG_EVENT_ORDER) { 394 enfoceDragParity("onDragStart", 0, 0); 395 } 396 397 updateChildrenLayersEnabled(false); 398 mLauncher.lockScreenOrientation(); 399 mLauncher.onInteractionBegin(); 400 // Prevent any Un/InstallShortcutReceivers from updating the db while we are dragging 401 InstallShortcutReceiver.enableInstallQueue(); 402 403 if (mAddNewPageOnDrag) { 404 mDeferRemoveExtraEmptyScreen = false; 405 addExtraEmptyScreenOnDrag(); 406 } 407 } 408 409 public void setAddNewPageOnDrag(boolean addPage) { 410 mAddNewPageOnDrag = addPage; 411 } 412 413 public void deferRemoveExtraEmptyScreen() { 414 mDeferRemoveExtraEmptyScreen = true; 415 } 416 417 @Override 418 public void onDragEnd() { 419 if (ENFORCE_DRAG_EVENT_ORDER) { 420 enfoceDragParity("onDragEnd", 0, 0); 421 } 422 423 if (!mDeferRemoveExtraEmptyScreen) { 424 removeExtraEmptyScreen(true, mDragSourceInternal != null); 425 } 426 427 updateChildrenLayersEnabled(false); 428 mLauncher.unlockScreenOrientation(false); 429 430 // Re-enable any Un/InstallShortcutReceiver and now process any queued items 431 InstallShortcutReceiver.disableAndFlushInstallQueue(getContext()); 432 433 mDragSourceInternal = null; 434 mLauncher.onInteractionEnd(); 435 } 436 437 /** 438 * Initializes various states for this workspace. 439 */ 440 protected void initWorkspace() { 441 mCurrentPage = getDefaultPage(); 442 LauncherAppState app = LauncherAppState.getInstance(); 443 DeviceProfile grid = mLauncher.getDeviceProfile(); 444 mIconCache = app.getIconCache(); 445 setWillNotDraw(false); 446 setClipChildren(false); 447 setClipToPadding(false); 448 setChildrenDrawnWithCacheEnabled(true); 449 450 setMinScale(mOverviewModeShrinkFactor); 451 setupLayoutTransition(); 452 453 mMaxDistanceForFolderCreation = (0.55f * grid.iconSizePx); 454 455 // Set the wallpaper dimensions when Launcher starts up 456 setWallpaperDimension(); 457 458 setEdgeGlowColor(getResources().getColor(R.color.workspace_edge_effect_color)); 459 } 460 461 private int getDefaultPage() { 462 return numCustomPages(); 463 } 464 465 private void setupLayoutTransition() { 466 // We want to show layout transitions when pages are deleted, to close the gap. 467 mLayoutTransition = new LayoutTransition(); 468 mLayoutTransition.enableTransitionType(LayoutTransition.DISAPPEARING); 469 mLayoutTransition.enableTransitionType(LayoutTransition.CHANGE_DISAPPEARING); 470 mLayoutTransition.disableTransitionType(LayoutTransition.APPEARING); 471 mLayoutTransition.disableTransitionType(LayoutTransition.CHANGE_APPEARING); 472 setLayoutTransition(mLayoutTransition); 473 } 474 475 void enableLayoutTransitions() { 476 setLayoutTransition(mLayoutTransition); 477 } 478 void disableLayoutTransitions() { 479 setLayoutTransition(null); 480 } 481 482 @Override 483 public void onChildViewAdded(View parent, View child) { 484 if (!(child instanceof CellLayout)) { 485 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 486 } 487 CellLayout cl = ((CellLayout) child); 488 cl.setOnInterceptTouchListener(this); 489 cl.setClickable(true); 490 cl.setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_NO); 491 super.onChildViewAdded(parent, child); 492 } 493 494 protected boolean shouldDrawChild(View child) { 495 final CellLayout cl = (CellLayout) child; 496 return super.shouldDrawChild(child) && 497 (mIsSwitchingState || 498 cl.getShortcutsAndWidgets().getAlpha() > 0 || 499 cl.getBackgroundAlpha() > 0); 500 } 501 502 /** 503 * @return The open folder on the current screen, or null if there is none 504 */ 505 public Folder getOpenFolder() { 506 DragLayer dragLayer = mLauncher.getDragLayer(); 507 int count = dragLayer.getChildCount(); 508 for (int i = 0; i < count; i++) { 509 View child = dragLayer.getChildAt(i); 510 if (child instanceof Folder) { 511 Folder folder = (Folder) child; 512 if (folder.getInfo().opened) 513 return folder; 514 } 515 } 516 return null; 517 } 518 519 boolean isTouchActive() { 520 return mTouchState != TOUCH_STATE_REST; 521 } 522 523 /** 524 * Initializes and binds the first page 525 * @param qsb an exisitng qsb to recycle or null. 526 */ 527 public void bindAndInitFirstWorkspaceScreen(View qsb) { 528 if (!FeatureFlags.QSB_ON_FIRST_SCREEN) { 529 return; 530 } 531 // Add the first page 532 CellLayout firstPage = insertNewWorkspaceScreen(Workspace.FIRST_SCREEN_ID, 0); 533 534 if (!mIsRtl || !mLauncher.getDeviceProfile().isVerticalBarLayout()) { 535 // Let the cell layout extend the start padding. 536 ((LayoutParams) firstPage.getLayoutParams()).matchStartEdge = true; 537 firstPage.setPaddingRelative(getPaddingStart(), 0, 0, 0); 538 } 539 540 if (qsb == null) { 541 // Always add a QSB on the first screen. 542 qsb = mLauncher.getLayoutInflater().inflate(R.layout.qsb_container, 543 firstPage, false); 544 } 545 546 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) qsb.getLayoutParams(); 547 lp.cellX = 0; 548 lp.cellY = 0; 549 lp.cellHSpan = firstPage.getCountX(); 550 lp.cellVSpan = 1; 551 lp.canReorder = false; 552 553 if (!firstPage.addViewToCellLayout(qsb, 0, R.id.qsb_container, lp, true)) { 554 Log.e(TAG, "Failed to add to item at (0, 0) to CellLayout"); 555 } 556 } 557 558 public void removeAllWorkspaceScreens() { 559 // Disable all layout transitions before removing all pages to ensure that we don't get the 560 // transition animations competing with us changing the scroll when we add pages or the 561 // custom content screen 562 disableLayoutTransitions(); 563 564 // Since we increment the current page when we call addCustomContentPage via bindScreens 565 // (and other places), we need to adjust the current page back when we clear the pages 566 if (hasCustomContent()) { 567 removeCustomContentPage(); 568 } 569 570 // Recycle the QSB widget 571 View qsb = findViewById(R.id.qsb_container); 572 if (qsb != null) { 573 ((ViewGroup) qsb.getParent()).removeView(qsb); 574 } 575 576 // Remove the pages and clear the screen models 577 removeAllViews(); 578 mScreenOrder.clear(); 579 mWorkspaceScreens.clear(); 580 581 // Ensure that the first page is always present 582 bindAndInitFirstWorkspaceScreen(qsb); 583 584 // Re-enable the layout transitions 585 enableLayoutTransitions(); 586 } 587 588 public void insertNewWorkspaceScreenBeforeEmptyScreen(long screenId) { 589 // Find the index to insert this view into. If the empty screen exists, then 590 // insert it before that. 591 int insertIndex = mScreenOrder.indexOf(EXTRA_EMPTY_SCREEN_ID); 592 if (insertIndex < 0) { 593 insertIndex = mScreenOrder.size(); 594 } 595 insertNewWorkspaceScreen(screenId, insertIndex); 596 } 597 598 public void insertNewWorkspaceScreen(long screenId) { 599 insertNewWorkspaceScreen(screenId, getChildCount()); 600 } 601 602 public CellLayout insertNewWorkspaceScreen(long screenId, int insertIndex) { 603 if (mWorkspaceScreens.containsKey(screenId)) { 604 throw new RuntimeException("Screen id " + screenId + " already exists!"); 605 } 606 607 // Inflate the cell layout, but do not add it automatically so that we can get the newly 608 // created CellLayout. 609 CellLayout newScreen = (CellLayout) mLauncher.getLayoutInflater().inflate( 610 R.layout.workspace_screen, this, false /* attachToRoot */); 611 612 newScreen.setOnLongClickListener(mLongClickListener); 613 newScreen.setOnClickListener(mLauncher); 614 newScreen.setSoundEffectsEnabled(false); 615 mWorkspaceScreens.put(screenId, newScreen); 616 mScreenOrder.add(insertIndex, screenId); 617 addView(newScreen, insertIndex); 618 619 if (mLauncher.getAccessibilityDelegate().isInAccessibleDrag()) { 620 newScreen.enableAccessibleDrag(true, CellLayout.WORKSPACE_ACCESSIBILITY_DRAG); 621 } 622 623 return newScreen; 624 } 625 626 public void createCustomContentContainer() { 627 CellLayout customScreen = (CellLayout) 628 mLauncher.getLayoutInflater().inflate(R.layout.workspace_screen, this, false); 629 customScreen.disableDragTarget(); 630 customScreen.disableJailContent(); 631 632 mWorkspaceScreens.put(CUSTOM_CONTENT_SCREEN_ID, customScreen); 633 mScreenOrder.add(0, CUSTOM_CONTENT_SCREEN_ID); 634 635 // We want no padding on the custom content 636 customScreen.setPadding(0, 0, 0, 0); 637 638 addFullScreenPage(customScreen); 639 640 // Update the custom content hint 641 if (mRestorePage != INVALID_RESTORE_PAGE) { 642 mRestorePage = mRestorePage + 1; 643 } else { 644 setCurrentPage(getCurrentPage() + 1); 645 } 646 } 647 648 public void removeCustomContentPage() { 649 CellLayout customScreen = getScreenWithId(CUSTOM_CONTENT_SCREEN_ID); 650 if (customScreen == null) { 651 throw new RuntimeException("Expected custom content screen to exist"); 652 } 653 654 mWorkspaceScreens.remove(CUSTOM_CONTENT_SCREEN_ID); 655 mScreenOrder.remove(CUSTOM_CONTENT_SCREEN_ID); 656 removeView(customScreen); 657 658 if (mCustomContentCallbacks != null) { 659 mCustomContentCallbacks.onScrollProgressChanged(0); 660 mCustomContentCallbacks.onHide(); 661 } 662 663 mCustomContentCallbacks = null; 664 665 // Update the custom content hint 666 if (mRestorePage != INVALID_RESTORE_PAGE) { 667 mRestorePage = mRestorePage - 1; 668 } else { 669 setCurrentPage(getCurrentPage() - 1); 670 } 671 } 672 673 public void addToCustomContentPage(View customContent, CustomContentCallbacks callbacks, 674 String description) { 675 if (getPageIndexForScreenId(CUSTOM_CONTENT_SCREEN_ID) < 0) { 676 throw new RuntimeException("Expected custom content screen to exist"); 677 } 678 679 // Add the custom content to the full screen custom page 680 CellLayout customScreen = getScreenWithId(CUSTOM_CONTENT_SCREEN_ID); 681 int spanX = customScreen.getCountX(); 682 int spanY = customScreen.getCountY(); 683 CellLayout.LayoutParams lp = new CellLayout.LayoutParams(0, 0, spanX, spanY); 684 lp.canReorder = false; 685 lp.isFullscreen = true; 686 if (customContent instanceof Insettable) { 687 ((Insettable)customContent).setInsets(mInsets); 688 } 689 690 // Verify that the child is removed from any existing parent. 691 if (customContent.getParent() instanceof ViewGroup) { 692 ViewGroup parent = (ViewGroup) customContent.getParent(); 693 parent.removeView(customContent); 694 } 695 customScreen.removeAllViews(); 696 customContent.setFocusable(true); 697 customContent.setOnKeyListener(new FullscreenKeyEventListener()); 698 customContent.setOnFocusChangeListener(mLauncher.mFocusHandler 699 .getHideIndicatorOnFocusListener()); 700 customScreen.addViewToCellLayout(customContent, 0, 0, lp, true); 701 mCustomContentDescription = description; 702 703 mCustomContentCallbacks = callbacks; 704 } 705 706 public void addExtraEmptyScreenOnDrag() { 707 boolean lastChildOnScreen = false; 708 boolean childOnFinalScreen = false; 709 710 // Cancel any pending removal of empty screen 711 mRemoveEmptyScreenRunnable = null; 712 713 if (mDragSourceInternal != null) { 714 if (mDragSourceInternal.getChildCount() == 1) { 715 lastChildOnScreen = true; 716 } 717 CellLayout cl = (CellLayout) mDragSourceInternal.getParent(); 718 if (indexOfChild(cl) == getChildCount() - 1) { 719 childOnFinalScreen = true; 720 } 721 } 722 723 // If this is the last item on the final screen 724 if (lastChildOnScreen && childOnFinalScreen) { 725 return; 726 } 727 if (!mWorkspaceScreens.containsKey(EXTRA_EMPTY_SCREEN_ID)) { 728 insertNewWorkspaceScreen(EXTRA_EMPTY_SCREEN_ID); 729 } 730 } 731 732 public boolean addExtraEmptyScreen() { 733 if (!mWorkspaceScreens.containsKey(EXTRA_EMPTY_SCREEN_ID)) { 734 insertNewWorkspaceScreen(EXTRA_EMPTY_SCREEN_ID); 735 return true; 736 } 737 return false; 738 } 739 740 private void convertFinalScreenToEmptyScreenIfNecessary() { 741 if (mLauncher.isWorkspaceLoading()) { 742 // Invalid and dangerous operation if workspace is loading 743 return; 744 } 745 746 if (hasExtraEmptyScreen() || mScreenOrder.size() == 0) return; 747 long finalScreenId = mScreenOrder.get(mScreenOrder.size() - 1); 748 749 if (finalScreenId == CUSTOM_CONTENT_SCREEN_ID) return; 750 CellLayout finalScreen = mWorkspaceScreens.get(finalScreenId); 751 752 // If the final screen is empty, convert it to the extra empty screen 753 if (finalScreen.getShortcutsAndWidgets().getChildCount() == 0 && 754 !finalScreen.isDropPending()) { 755 mWorkspaceScreens.remove(finalScreenId); 756 mScreenOrder.remove(finalScreenId); 757 758 // if this is the last non-custom content screen, convert it to the empty screen 759 mWorkspaceScreens.put(EXTRA_EMPTY_SCREEN_ID, finalScreen); 760 mScreenOrder.add(EXTRA_EMPTY_SCREEN_ID); 761 762 // Update the model if we have changed any screens 763 mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); 764 } 765 } 766 767 public void removeExtraEmptyScreen(final boolean animate, boolean stripEmptyScreens) { 768 removeExtraEmptyScreenDelayed(animate, null, 0, stripEmptyScreens); 769 } 770 771 public void removeExtraEmptyScreenDelayed(final boolean animate, final Runnable onComplete, 772 final int delay, final boolean stripEmptyScreens) { 773 if (mLauncher.isWorkspaceLoading()) { 774 // Don't strip empty screens if the workspace is still loading 775 return; 776 } 777 778 if (delay > 0) { 779 postDelayed(new Runnable() { 780 @Override 781 public void run() { 782 removeExtraEmptyScreenDelayed(animate, onComplete, 0, stripEmptyScreens); 783 } 784 }, delay); 785 return; 786 } 787 788 convertFinalScreenToEmptyScreenIfNecessary(); 789 if (hasExtraEmptyScreen()) { 790 int emptyIndex = mScreenOrder.indexOf(EXTRA_EMPTY_SCREEN_ID); 791 if (getNextPage() == emptyIndex) { 792 snapToPage(getNextPage() - 1, SNAP_OFF_EMPTY_SCREEN_DURATION); 793 fadeAndRemoveEmptyScreen(SNAP_OFF_EMPTY_SCREEN_DURATION, FADE_EMPTY_SCREEN_DURATION, 794 onComplete, stripEmptyScreens); 795 } else { 796 snapToPage(getNextPage(), 0); 797 fadeAndRemoveEmptyScreen(0, FADE_EMPTY_SCREEN_DURATION, 798 onComplete, stripEmptyScreens); 799 } 800 return; 801 } else if (stripEmptyScreens) { 802 // If we're not going to strip the empty screens after removing 803 // the extra empty screen, do it right away. 804 stripEmptyScreens(); 805 } 806 807 if (onComplete != null) { 808 onComplete.run(); 809 } 810 } 811 812 private void fadeAndRemoveEmptyScreen(int delay, int duration, final Runnable onComplete, 813 final boolean stripEmptyScreens) { 814 // XXX: Do we need to update LM workspace screens below? 815 PropertyValuesHolder alpha = PropertyValuesHolder.ofFloat("alpha", 0f); 816 PropertyValuesHolder bgAlpha = PropertyValuesHolder.ofFloat("backgroundAlpha", 0f); 817 818 final CellLayout cl = mWorkspaceScreens.get(EXTRA_EMPTY_SCREEN_ID); 819 820 mRemoveEmptyScreenRunnable = new Runnable() { 821 @Override 822 public void run() { 823 if (hasExtraEmptyScreen()) { 824 mWorkspaceScreens.remove(EXTRA_EMPTY_SCREEN_ID); 825 mScreenOrder.remove(EXTRA_EMPTY_SCREEN_ID); 826 removeView(cl); 827 if (stripEmptyScreens) { 828 stripEmptyScreens(); 829 } 830 // Update the page indicator to reflect the removed page. 831 showPageIndicatorAtCurrentScroll(); 832 } 833 } 834 }; 835 836 ObjectAnimator oa = ObjectAnimator.ofPropertyValuesHolder(cl, alpha, bgAlpha); 837 oa.setDuration(duration); 838 oa.setStartDelay(delay); 839 oa.addListener(new AnimatorListenerAdapter() { 840 @Override 841 public void onAnimationEnd(Animator animation) { 842 if (mRemoveEmptyScreenRunnable != null) { 843 mRemoveEmptyScreenRunnable.run(); 844 } 845 if (onComplete != null) { 846 onComplete.run(); 847 } 848 } 849 }); 850 oa.start(); 851 } 852 853 public boolean hasExtraEmptyScreen() { 854 int nScreens = getChildCount(); 855 nScreens = nScreens - numCustomPages(); 856 return mWorkspaceScreens.containsKey(EXTRA_EMPTY_SCREEN_ID) && nScreens > 1; 857 } 858 859 public long commitExtraEmptyScreen() { 860 if (mLauncher.isWorkspaceLoading()) { 861 // Invalid and dangerous operation if workspace is loading 862 return -1; 863 } 864 865 int index = getPageIndexForScreenId(EXTRA_EMPTY_SCREEN_ID); 866 CellLayout cl = mWorkspaceScreens.get(EXTRA_EMPTY_SCREEN_ID); 867 mWorkspaceScreens.remove(EXTRA_EMPTY_SCREEN_ID); 868 mScreenOrder.remove(EXTRA_EMPTY_SCREEN_ID); 869 870 long newId = LauncherSettings.Settings.call(getContext().getContentResolver(), 871 LauncherSettings.Settings.METHOD_NEW_SCREEN_ID) 872 .getLong(LauncherSettings.Settings.EXTRA_VALUE); 873 mWorkspaceScreens.put(newId, cl); 874 mScreenOrder.add(newId); 875 876 // Update the model for the new screen 877 mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); 878 879 return newId; 880 } 881 882 public CellLayout getScreenWithId(long screenId) { 883 return mWorkspaceScreens.get(screenId); 884 } 885 886 public long getIdForScreen(CellLayout layout) { 887 int index = mWorkspaceScreens.indexOfValue(layout); 888 if (index != -1) { 889 return mWorkspaceScreens.keyAt(index); 890 } 891 return -1; 892 } 893 894 public int getPageIndexForScreenId(long screenId) { 895 return indexOfChild(mWorkspaceScreens.get(screenId)); 896 } 897 898 public long getScreenIdForPageIndex(int index) { 899 if (0 <= index && index < mScreenOrder.size()) { 900 return mScreenOrder.get(index); 901 } 902 return -1; 903 } 904 905 public ArrayList<Long> getScreenOrder() { 906 return mScreenOrder; 907 } 908 909 public void stripEmptyScreens() { 910 if (mLauncher.isWorkspaceLoading()) { 911 // Don't strip empty screens if the workspace is still loading. 912 // This is dangerous and can result in data loss. 913 return; 914 } 915 916 if (isPageMoving()) { 917 mStripScreensOnPageStopMoving = true; 918 return; 919 } 920 921 int currentPage = getNextPage(); 922 ArrayList<Long> removeScreens = new ArrayList<Long>(); 923 int total = mWorkspaceScreens.size(); 924 for (int i = 0; i < total; i++) { 925 long id = mWorkspaceScreens.keyAt(i); 926 CellLayout cl = mWorkspaceScreens.valueAt(i); 927 // FIRST_SCREEN_ID can never be removed. 928 if ((!FeatureFlags.QSB_ON_FIRST_SCREEN || id > FIRST_SCREEN_ID) 929 && cl.getShortcutsAndWidgets().getChildCount() == 0) { 930 removeScreens.add(id); 931 } 932 } 933 934 boolean isInAccessibleDrag = mLauncher.getAccessibilityDelegate().isInAccessibleDrag(); 935 936 // We enforce at least one page to add new items to. In the case that we remove the last 937 // such screen, we convert the last screen to the empty screen 938 int minScreens = 1 + numCustomPages(); 939 940 int pageShift = 0; 941 for (Long id: removeScreens) { 942 CellLayout cl = mWorkspaceScreens.get(id); 943 mWorkspaceScreens.remove(id); 944 mScreenOrder.remove(id); 945 946 if (getChildCount() > minScreens) { 947 if (indexOfChild(cl) < currentPage) { 948 pageShift++; 949 } 950 951 if (isInAccessibleDrag) { 952 cl.enableAccessibleDrag(false, CellLayout.WORKSPACE_ACCESSIBILITY_DRAG); 953 } 954 955 removeView(cl); 956 } else { 957 // if this is the last non-custom content screen, convert it to the empty screen 958 mRemoveEmptyScreenRunnable = null; 959 mWorkspaceScreens.put(EXTRA_EMPTY_SCREEN_ID, cl); 960 mScreenOrder.add(EXTRA_EMPTY_SCREEN_ID); 961 } 962 } 963 964 if (!removeScreens.isEmpty()) { 965 // Update the model if we have changed any screens 966 mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); 967 } 968 969 if (pageShift >= 0) { 970 setCurrentPage(currentPage - pageShift); 971 } 972 } 973 974 // See implementation for parameter definition. 975 void addInScreen(View child, long container, long screenId, 976 int x, int y, int spanX, int spanY) { 977 addInScreen(child, container, screenId, x, y, spanX, spanY, false, false); 978 } 979 980 // At bind time, we use the rank (screenId) to compute x and y for hotseat items. 981 // See implementation for parameter definition. 982 public void addInScreenFromBind(View child, long container, long screenId, int x, int y, 983 int spanX, int spanY) { 984 addInScreen(child, container, screenId, x, y, spanX, spanY, false, true); 985 } 986 987 // See implementation for parameter definition. 988 void addInScreen(View child, long container, long screenId, int x, int y, int spanX, int spanY, 989 boolean insert) { 990 addInScreen(child, container, screenId, x, y, spanX, spanY, insert, false); 991 } 992 993 /** 994 * Adds the specified child in the specified screen. The position and dimension of 995 * the child are defined by x, y, spanX and spanY. 996 * 997 * @param child The child to add in one of the workspace's screens. 998 * @param screenId The screen in which to add the child. 999 * @param x The X position of the child in the screen's grid. 1000 * @param y The Y position of the child in the screen's grid. 1001 * @param spanX The number of cells spanned horizontally by the child. 1002 * @param spanY The number of cells spanned vertically by the child. 1003 * @param insert When true, the child is inserted at the beginning of the children list. 1004 * @param computeXYFromRank When true, we use the rank (stored in screenId) to compute 1005 * the x and y position in which to place hotseat items. Otherwise 1006 * we use the x and y position to compute the rank. 1007 */ 1008 void addInScreen(View child, long container, long screenId, int x, int y, int spanX, int spanY, 1009 boolean insert, boolean computeXYFromRank) { 1010 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 1011 if (getScreenWithId(screenId) == null) { 1012 Log.e(TAG, "Skipping child, screenId " + screenId + " not found"); 1013 // DEBUGGING - Print out the stack trace to see where we are adding from 1014 new Throwable().printStackTrace(); 1015 return; 1016 } 1017 } 1018 if (screenId == EXTRA_EMPTY_SCREEN_ID) { 1019 // This should never happen 1020 throw new RuntimeException("Screen id should not be EXTRA_EMPTY_SCREEN_ID"); 1021 } 1022 1023 final CellLayout layout; 1024 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 1025 layout = mLauncher.getHotseat().getLayout(); 1026 child.setOnKeyListener(new HotseatIconKeyEventListener()); 1027 1028 // Hide folder title in the hotseat 1029 if (child instanceof FolderIcon) { 1030 ((FolderIcon) child).setTextVisible(false); 1031 } 1032 1033 if (computeXYFromRank) { 1034 x = mLauncher.getHotseat().getCellXFromOrder((int) screenId); 1035 y = mLauncher.getHotseat().getCellYFromOrder((int) screenId); 1036 } else { 1037 screenId = mLauncher.getHotseat().getOrderInHotseat(x, y); 1038 } 1039 } else { 1040 // Show folder title if not in the hotseat 1041 if (child instanceof FolderIcon) { 1042 ((FolderIcon) child).setTextVisible(true); 1043 } 1044 layout = getScreenWithId(screenId); 1045 child.setOnKeyListener(new IconKeyEventListener()); 1046 } 1047 1048 ViewGroup.LayoutParams genericLp = child.getLayoutParams(); 1049 CellLayout.LayoutParams lp; 1050 if (genericLp == null || !(genericLp instanceof CellLayout.LayoutParams)) { 1051 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 1052 } else { 1053 lp = (CellLayout.LayoutParams) genericLp; 1054 lp.cellX = x; 1055 lp.cellY = y; 1056 lp.cellHSpan = spanX; 1057 lp.cellVSpan = spanY; 1058 } 1059 1060 if (spanX < 0 && spanY < 0) { 1061 lp.isLockedToGrid = false; 1062 } 1063 1064 // Get the canonical child id to uniquely represent this view in this screen 1065 ItemInfo info = (ItemInfo) child.getTag(); 1066 int childId = mLauncher.getViewIdForItem(info); 1067 1068 boolean markCellsAsOccupied = !(child instanceof Folder); 1069 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 1070 // TODO: This branch occurs when the workspace is adding views 1071 // outside of the defined grid 1072 // maybe we should be deleting these items from the LauncherModel? 1073 Log.e(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 1074 } 1075 1076 if (!(child instanceof Folder)) { 1077 child.setHapticFeedbackEnabled(false); 1078 child.setOnLongClickListener(mLongClickListener); 1079 } 1080 if (child instanceof DropTarget) { 1081 mDragController.addDropTarget((DropTarget) child); 1082 } 1083 } 1084 1085 /** 1086 * Called directly from a CellLayout (not by the framework), after we've been added as a 1087 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 1088 * that it should intercept touch events, which is not something that is normally supported. 1089 */ 1090 @SuppressLint("ClickableViewAccessibility") 1091 @Override 1092 public boolean onTouch(View v, MotionEvent event) { 1093 return (workspaceInModalState() || !isFinishedSwitchingState()) 1094 || (!workspaceInModalState() && indexOfChild(v) != mCurrentPage); 1095 } 1096 1097 public boolean isSwitchingState() { 1098 return mIsSwitchingState; 1099 } 1100 1101 /** This differs from isSwitchingState in that we take into account how far the transition 1102 * has completed. */ 1103 public boolean isFinishedSwitchingState() { 1104 return !mIsSwitchingState || (mTransitionProgress > 0.5f); 1105 } 1106 1107 protected void onWindowVisibilityChanged (int visibility) { 1108 mLauncher.onWindowVisibilityChanged(visibility); 1109 } 1110 1111 @Override 1112 public boolean dispatchUnhandledMove(View focused, int direction) { 1113 if (workspaceInModalState() || !isFinishedSwitchingState()) { 1114 // when the home screens are shrunken, shouldn't allow side-scrolling 1115 return false; 1116 } 1117 return super.dispatchUnhandledMove(focused, direction); 1118 } 1119 1120 @Override 1121 public boolean onInterceptTouchEvent(MotionEvent ev) { 1122 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 1123 case MotionEvent.ACTION_DOWN: 1124 mXDown = ev.getX(); 1125 mYDown = ev.getY(); 1126 mTouchDownTime = System.currentTimeMillis(); 1127 break; 1128 case MotionEvent.ACTION_POINTER_UP: 1129 case MotionEvent.ACTION_UP: 1130 if (mTouchState == TOUCH_STATE_REST) { 1131 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 1132 if (currentPage != null) { 1133 onWallpaperTap(ev); 1134 } 1135 } 1136 } 1137 return super.onInterceptTouchEvent(ev); 1138 } 1139 1140 @Override 1141 public boolean onGenericMotionEvent(MotionEvent event) { 1142 // Ignore pointer scroll events if the custom content doesn't allow scrolling. 1143 if ((getScreenIdForPageIndex(getCurrentPage()) == CUSTOM_CONTENT_SCREEN_ID) 1144 && (mCustomContentCallbacks != null) 1145 && !mCustomContentCallbacks.isScrollingAllowed()) { 1146 return false; 1147 } 1148 return super.onGenericMotionEvent(event); 1149 } 1150 1151 protected void reinflateWidgetsIfNecessary() { 1152 final int clCount = getChildCount(); 1153 for (int i = 0; i < clCount; i++) { 1154 CellLayout cl = (CellLayout) getChildAt(i); 1155 ShortcutAndWidgetContainer swc = cl.getShortcutsAndWidgets(); 1156 final int itemCount = swc.getChildCount(); 1157 for (int j = 0; j < itemCount; j++) { 1158 View v = swc.getChildAt(j); 1159 1160 if (v instanceof LauncherAppWidgetHostView 1161 && v.getTag() instanceof LauncherAppWidgetInfo) { 1162 LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) v.getTag(); 1163 LauncherAppWidgetHostView lahv = (LauncherAppWidgetHostView) v; 1164 if (lahv.isReinflateRequired()) { 1165 // Remove and rebind the current widget (which was inflated in the wrong 1166 // orientation), but don't delete it from the database 1167 mLauncher.removeItem(lahv, info, false /* deleteFromDb */); 1168 mLauncher.bindAppWidget(info); 1169 } 1170 } 1171 } 1172 } 1173 } 1174 1175 @Override 1176 protected void determineScrollingStart(MotionEvent ev) { 1177 if (!isFinishedSwitchingState()) return; 1178 1179 float deltaX = ev.getX() - mXDown; 1180 float absDeltaX = Math.abs(deltaX); 1181 float absDeltaY = Math.abs(ev.getY() - mYDown); 1182 1183 if (Float.compare(absDeltaX, 0f) == 0) return; 1184 1185 float slope = absDeltaY / absDeltaX; 1186 float theta = (float) Math.atan(slope); 1187 1188 if (absDeltaX > mTouchSlop || absDeltaY > mTouchSlop) { 1189 cancelCurrentPageLongPress(); 1190 } 1191 1192 boolean passRightSwipesToCustomContent = 1193 (mTouchDownTime - mCustomContentShowTime) > CUSTOM_CONTENT_GESTURE_DELAY; 1194 1195 boolean swipeInIgnoreDirection = mIsRtl ? deltaX < 0 : deltaX > 0; 1196 boolean onCustomContentScreen = 1197 getScreenIdForPageIndex(getCurrentPage()) == CUSTOM_CONTENT_SCREEN_ID; 1198 if (swipeInIgnoreDirection && onCustomContentScreen && passRightSwipesToCustomContent) { 1199 // Pass swipes to the right to the custom content page. 1200 return; 1201 } 1202 1203 if (onCustomContentScreen && (mCustomContentCallbacks != null) 1204 && !mCustomContentCallbacks.isScrollingAllowed()) { 1205 // Don't allow workspace scrolling if the current custom content screen doesn't allow 1206 // scrolling. 1207 return; 1208 } 1209 1210 if (theta > MAX_SWIPE_ANGLE) { 1211 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 1212 return; 1213 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 1214 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 1215 // increase the touch slop to make it harder to begin scrolling the workspace. This 1216 // results in vertically scrolling widgets to more easily. The higher the angle, the 1217 // more we increase touch slop. 1218 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 1219 float extraRatio = (float) 1220 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 1221 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 1222 } else { 1223 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 1224 super.determineScrollingStart(ev); 1225 } 1226 } 1227 1228 protected void onPageBeginMoving() { 1229 super.onPageBeginMoving(); 1230 1231 if (isHardwareAccelerated()) { 1232 updateChildrenLayersEnabled(false); 1233 } else { 1234 if (mNextPage != INVALID_PAGE) { 1235 // we're snapping to a particular screen 1236 enableChildrenCache(mCurrentPage, mNextPage); 1237 } else { 1238 // this is when user is actively dragging a particular screen, they might 1239 // swipe it either left or right (but we won't advance by more than one screen) 1240 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 1241 } 1242 } 1243 } 1244 1245 protected void onPageEndMoving() { 1246 super.onPageEndMoving(); 1247 1248 if (isHardwareAccelerated()) { 1249 updateChildrenLayersEnabled(false); 1250 } else { 1251 clearChildrenCache(); 1252 } 1253 1254 if (mDragController.isDragging()) { 1255 if (workspaceInModalState()) { 1256 // If we are in springloaded mode, then force an event to check if the current touch 1257 // is under a new page (to scroll to) 1258 mDragController.forceTouchMove(); 1259 } 1260 } 1261 1262 if (mDelayedResizeRunnable != null && !mIsSwitchingState) { 1263 mDelayedResizeRunnable.run(); 1264 mDelayedResizeRunnable = null; 1265 } 1266 1267 if (mDelayedSnapToPageRunnable != null) { 1268 mDelayedSnapToPageRunnable.run(); 1269 mDelayedSnapToPageRunnable = null; 1270 } 1271 if (mStripScreensOnPageStopMoving) { 1272 stripEmptyScreens(); 1273 mStripScreensOnPageStopMoving = false; 1274 } 1275 } 1276 1277 protected void onScrollInteractionBegin() { 1278 super.onScrollInteractionEnd(); 1279 mScrollInteractionBegan = true; 1280 } 1281 1282 protected void onScrollInteractionEnd() { 1283 super.onScrollInteractionEnd(); 1284 mScrollInteractionBegan = false; 1285 if (mStartedSendingScrollEvents) { 1286 mStartedSendingScrollEvents = false; 1287 mLauncherOverlay.onScrollInteractionEnd(); 1288 } 1289 } 1290 1291 public void setLauncherOverlay(LauncherOverlay overlay) { 1292 mLauncherOverlay = overlay; 1293 // A new overlay has been set. Reset event tracking 1294 mStartedSendingScrollEvents = false; 1295 onOverlayScrollChanged(0); 1296 } 1297 1298 @Override 1299 protected int getUnboundedScrollX() { 1300 if (isScrollingOverlay()) { 1301 return mUnboundedScrollX; 1302 } 1303 1304 return super.getUnboundedScrollX(); 1305 } 1306 1307 private boolean isScrollingOverlay() { 1308 return mLauncherOverlay != null && 1309 ((mIsRtl && mUnboundedScrollX > mMaxScrollX) || (!mIsRtl && mUnboundedScrollX < 0)); 1310 } 1311 1312 @Override 1313 protected void snapToDestination() { 1314 // If we're overscrolling the overlay, we make sure to immediately reset the PagedView 1315 // to it's baseline position instead of letting the overscroll settle. The overlay handles 1316 // it's own settling, and every gesture to the overlay should be self-contained and start 1317 // from 0, so we zero it out here. 1318 if (isScrollingOverlay()) { 1319 int finalScroll = mIsRtl ? mMaxScrollX : 0; 1320 1321 // We reset mWasInOverscroll so that PagedView doesn't zero out the overscroll 1322 // interaction when we call scrollTo. 1323 mWasInOverscroll = false; 1324 scrollTo(finalScroll, getScrollY()); 1325 } else { 1326 super.snapToDestination(); 1327 } 1328 } 1329 1330 @Override 1331 public void scrollTo(int x, int y) { 1332 mUnboundedScrollX = x; 1333 super.scrollTo(x, y); 1334 } 1335 1336 @Override 1337 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 1338 super.onScrollChanged(l, t, oldl, oldt); 1339 1340 // Update the page indicator progress. 1341 boolean isTransitioning = mIsSwitchingState 1342 || (getLayoutTransition() != null && getLayoutTransition().isRunning()); 1343 if (!isTransitioning) { 1344 showPageIndicatorAtCurrentScroll(); 1345 } 1346 } 1347 1348 private void showPageIndicatorAtCurrentScroll() { 1349 if (mPageIndicator != null) { 1350 mPageIndicator.setScroll(getScrollX(), computeMaxScrollX()); 1351 } 1352 } 1353 1354 @Override 1355 protected void overScroll(float amount) { 1356 boolean shouldOverScroll = (amount <= 0 && (!hasCustomContent() || mIsRtl)) || 1357 (amount >= 0 && (!hasCustomContent() || !mIsRtl)); 1358 1359 boolean shouldScrollOverlay = mLauncherOverlay != null && 1360 ((amount <= 0 && !mIsRtl) || (amount >= 0 && mIsRtl)); 1361 1362 boolean shouldZeroOverlay = mLauncherOverlay != null && mLastOverlaySroll != 0 && 1363 ((amount >= 0 && !mIsRtl) || (amount <= 0 && mIsRtl)); 1364 1365 if (shouldScrollOverlay) { 1366 if (!mStartedSendingScrollEvents && mScrollInteractionBegan) { 1367 mStartedSendingScrollEvents = true; 1368 mLauncherOverlay.onScrollInteractionBegin(); 1369 } 1370 1371 mLastOverlaySroll = Math.abs(amount / getViewportWidth()); 1372 mLauncherOverlay.onScrollChange(mLastOverlaySroll, mIsRtl); 1373 } else if (shouldOverScroll) { 1374 dampedOverScroll(amount); 1375 } 1376 1377 if (shouldZeroOverlay) { 1378 mLauncherOverlay.onScrollChange(0, mIsRtl); 1379 } 1380 } 1381 1382 private final Interpolator mAlphaInterpolator = new DecelerateInterpolator(3f); 1383 1384 /** 1385 * The overlay scroll is being controlled locally, just update our overlay effect 1386 */ 1387 public void onOverlayScrollChanged(float scroll) { 1388 float offset = 0f; 1389 float slip = 0f; 1390 1391 scroll = Math.max(scroll - offset, 0); 1392 scroll = Math.min(1, scroll / (1 - offset)); 1393 1394 float alpha = 1 - mAlphaInterpolator.getInterpolation(scroll); 1395 float transX = mLauncher.getDragLayer().getMeasuredWidth() * scroll; 1396 transX *= 1 - slip; 1397 1398 if (mIsRtl) { 1399 transX = -transX; 1400 } 1401 mOverlayTranslation = transX; 1402 1403 // TODO(adamcohen): figure out a final effect here. We may need to recommend 1404 // different effects based on device performance. On at least one relatively high-end 1405 // device I've tried, translating the launcher causes things to get quite laggy. 1406 setWorkspaceTranslation(Direction.X, transX, alpha); 1407 setHotseatTranslation(Direction.X, transX, alpha); 1408 } 1409 1410 /** 1411 * Moves the workspace UI in the provided direction. 1412 * @param direction the direction to move the workspace 1413 * @param translation the amount of shift. 1414 * @param alpha the alpha for the workspace page 1415 */ 1416 public void setWorkspaceTranslation(Direction direction, float translation, float alpha) { 1417 Property<View, Float> property = direction.viewProperty; 1418 mPageAlpha[direction.ordinal()] = alpha; 1419 float finalAlpha = mPageAlpha[0] * mPageAlpha[1]; 1420 1421 View currentChild = getChildAt(getCurrentPage()); 1422 if (currentChild != null) { 1423 property.set(currentChild, translation); 1424 currentChild.setAlpha(finalAlpha); 1425 } 1426 1427 // When the animation finishes, reset all pages, just in case we missed a page. 1428 if (Float.compare(translation, 0) == 0) { 1429 for (int i = getChildCount() - 1; i >= 0; i--) { 1430 View child = getChildAt(i); 1431 property.set(child, translation); 1432 child.setAlpha(finalAlpha); 1433 } 1434 } 1435 } 1436 1437 /** 1438 * Moves the Hotseat UI in the provided direction. 1439 * @param direction the direction to move the workspace 1440 * @param translation the amound of shift. 1441 * @param alpha the alpha for the hotseat page 1442 */ 1443 public void setHotseatTranslation(Direction direction, float translation, float alpha) { 1444 Property<View, Float> property = direction.viewProperty; 1445 mHotseatAlpha[direction.ordinal()] = alpha; 1446 float finalAlpha = mHotseatAlpha[0] * mHotseatAlpha[1]; 1447 1448 View pageIndicator = getPageIndicator(); 1449 if (pageIndicator != null) { 1450 property.set(pageIndicator, translation); 1451 pageIndicator.setAlpha(finalAlpha); 1452 } 1453 1454 property.set(mLauncher.getHotseat(), translation); 1455 mLauncher.getHotseat().setAlpha(finalAlpha); 1456 } 1457 1458 @Override 1459 protected Matrix getPageShiftMatrix() { 1460 if (Float.compare(mOverlayTranslation, 0) != 0) { 1461 // The pages are translated by mOverlayTranslation. incorporate that in the 1462 // visible page calculation by shifting everything back by that same amount. 1463 mTempMatrix.set(getMatrix()); 1464 mTempMatrix.postTranslate(-mOverlayTranslation, 0); 1465 return mTempMatrix; 1466 } 1467 return super.getPageShiftMatrix(); 1468 } 1469 1470 @Override 1471 protected void getEdgeVerticalPostion(int[] pos) { 1472 View child = getChildAt(getPageCount() - 1); 1473 pos[0] = child.getTop(); 1474 pos[1] = child.getBottom(); 1475 } 1476 1477 @Override 1478 protected void notifyPageSwitchListener() { 1479 super.notifyPageSwitchListener(); 1480 1481 if (hasCustomContent() && getNextPage() == 0 && !mCustomContentShowing) { 1482 mCustomContentShowing = true; 1483 if (mCustomContentCallbacks != null) { 1484 mCustomContentCallbacks.onShow(false); 1485 mCustomContentShowTime = System.currentTimeMillis(); 1486 } 1487 } else if (hasCustomContent() && getNextPage() != 0 && mCustomContentShowing) { 1488 mCustomContentShowing = false; 1489 if (mCustomContentCallbacks != null) { 1490 mCustomContentCallbacks.onHide(); 1491 } 1492 } 1493 } 1494 1495 protected CustomContentCallbacks getCustomContentCallbacks() { 1496 return mCustomContentCallbacks; 1497 } 1498 1499 protected void setWallpaperDimension() { 1500 Utilities.THREAD_POOL_EXECUTOR.execute(new Runnable() { 1501 @Override 1502 public void run() { 1503 final Point size = LauncherAppState.getInstance() 1504 .getInvariantDeviceProfile().defaultWallpaperSize; 1505 if (size.x != mWallpaperManager.getDesiredMinimumWidth() 1506 || size.y != mWallpaperManager.getDesiredMinimumHeight()) { 1507 mWallpaperManager.suggestDesiredDimensions(size.x, size.y); 1508 } 1509 } 1510 }); 1511 } 1512 1513 protected void snapToPage(int whichPage, Runnable r) { 1514 snapToPage(whichPage, SLOW_PAGE_SNAP_ANIMATION_DURATION, r); 1515 } 1516 1517 protected void snapToPage(int whichPage, int duration, Runnable r) { 1518 if (mDelayedSnapToPageRunnable != null) { 1519 mDelayedSnapToPageRunnable.run(); 1520 } 1521 mDelayedSnapToPageRunnable = r; 1522 snapToPage(whichPage, duration); 1523 } 1524 1525 public void snapToScreenId(long screenId) { 1526 snapToScreenId(screenId, null); 1527 } 1528 1529 protected void snapToScreenId(long screenId, Runnable r) { 1530 snapToPage(getPageIndexForScreenId(screenId), r); 1531 } 1532 1533 @Override 1534 public void computeScroll() { 1535 super.computeScroll(); 1536 mWallpaperOffset.syncWithScroll(); 1537 } 1538 1539 public void computeScrollWithoutInvalidation() { 1540 computeScrollHelper(false); 1541 } 1542 1543 @Override 1544 protected void determineScrollingStart(MotionEvent ev, float touchSlopScale) { 1545 if (!isSwitchingState()) { 1546 super.determineScrollingStart(ev, touchSlopScale); 1547 } 1548 } 1549 1550 @Override 1551 public void announceForAccessibility(CharSequence text) { 1552 // Don't announce if apps is on top of us. 1553 if (!mLauncher.isAppsViewVisible()) { 1554 super.announceForAccessibility(text); 1555 } 1556 } 1557 1558 public void showOutlinesTemporarily() { 1559 if (!mIsPageMoving && !isTouchActive()) { 1560 snapToPage(mCurrentPage); 1561 } 1562 } 1563 1564 private void updatePageAlphaValues(int screenCenter) { 1565 if (mWorkspaceFadeInAdjacentScreens && 1566 !workspaceInModalState() && 1567 !mIsSwitchingState) { 1568 for (int i = numCustomPages(); i < getChildCount(); i++) { 1569 CellLayout child = (CellLayout) getChildAt(i); 1570 if (child != null) { 1571 float scrollProgress = getScrollProgress(screenCenter, child, i); 1572 float alpha = 1 - Math.abs(scrollProgress); 1573 child.getShortcutsAndWidgets().setAlpha(alpha); 1574 } 1575 } 1576 } 1577 } 1578 1579 @TargetApi(Build.VERSION_CODES.LOLLIPOP) 1580 @Override 1581 public void enableAccessibleDrag(boolean enable) { 1582 for (int i = 0; i < getChildCount(); i++) { 1583 CellLayout child = (CellLayout) getChildAt(i); 1584 child.enableAccessibleDrag(enable, CellLayout.WORKSPACE_ACCESSIBILITY_DRAG); 1585 } 1586 1587 if (enable) { 1588 // We need to allow our individual children to become click handlers in this case 1589 setOnClickListener(null); 1590 } else { 1591 // Reset our click listener 1592 setOnClickListener(mLauncher); 1593 } 1594 mLauncher.getDropTargetBar().enableAccessibleDrag(enable); 1595 mLauncher.getHotseat().getLayout() 1596 .enableAccessibleDrag(enable, CellLayout.WORKSPACE_ACCESSIBILITY_DRAG); 1597 } 1598 1599 public boolean hasCustomContent() { 1600 return (mScreenOrder.size() > 0 && mScreenOrder.get(0) == CUSTOM_CONTENT_SCREEN_ID); 1601 } 1602 1603 public int numCustomPages() { 1604 return hasCustomContent() ? 1 : 0; 1605 } 1606 1607 public boolean isOnOrMovingToCustomContent() { 1608 return hasCustomContent() && getNextPage() == 0 && mRestorePage == INVALID_RESTORE_PAGE; 1609 } 1610 1611 private void updateStateForCustomContent(int screenCenter) { 1612 float translationX = 0; 1613 float progress = 0; 1614 if (hasCustomContent()) { 1615 int index = mScreenOrder.indexOf(CUSTOM_CONTENT_SCREEN_ID); 1616 1617 int scrollDelta = getScrollX() - getScrollForPage(index) - 1618 getLayoutTransitionOffsetForPage(index); 1619 float scrollRange = getScrollForPage(index + 1) - getScrollForPage(index); 1620 translationX = scrollRange - scrollDelta; 1621 progress = (scrollRange - scrollDelta) / scrollRange; 1622 1623 if (mIsRtl) { 1624 translationX = Math.min(0, translationX); 1625 } else { 1626 translationX = Math.max(0, translationX); 1627 } 1628 progress = Math.max(0, progress); 1629 } 1630 1631 if (Float.compare(progress, mLastCustomContentScrollProgress) == 0) return; 1632 1633 CellLayout cc = mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID); 1634 if (progress > 0 && cc.getVisibility() != VISIBLE && !workspaceInModalState()) { 1635 cc.setVisibility(VISIBLE); 1636 } 1637 1638 mLastCustomContentScrollProgress = progress; 1639 1640 // We should only update the drag layer background alpha if we are not in all apps or the 1641 // widgets tray 1642 if (mState == State.NORMAL) { 1643 mLauncher.getDragLayer().setBackgroundAlpha(progress == 1 ? 0 : progress * 0.8f); 1644 } 1645 1646 if (mLauncher.getHotseat() != null) { 1647 mLauncher.getHotseat().setTranslationX(translationX); 1648 } 1649 1650 if (getPageIndicator() != null) { 1651 getPageIndicator().setTranslationX(translationX); 1652 } 1653 1654 if (mCustomContentCallbacks != null) { 1655 mCustomContentCallbacks.onScrollProgressChanged(progress); 1656 } 1657 } 1658 1659 @Override 1660 protected OnClickListener getPageIndicatorClickListener() { 1661 AccessibilityManager am = (AccessibilityManager) 1662 getContext().getSystemService(Context.ACCESSIBILITY_SERVICE); 1663 if (!am.isTouchExplorationEnabled()) { 1664 return null; 1665 } 1666 return new OnClickListener() { 1667 @Override 1668 public void onClick(View arg0) { 1669 mLauncher.showOverviewMode(true); 1670 } 1671 }; 1672 } 1673 1674 @Override 1675 protected void screenScrolled(int screenCenter) { 1676 updatePageAlphaValues(screenCenter); 1677 updateStateForCustomContent(screenCenter); 1678 enableHwLayersOnVisiblePages(); 1679 } 1680 1681 protected void onAttachedToWindow() { 1682 super.onAttachedToWindow(); 1683 IBinder windowToken = getWindowToken(); 1684 mWallpaperOffset.setWindowToken(windowToken); 1685 computeScroll(); 1686 mDragController.setWindowToken(windowToken); 1687 } 1688 1689 protected void onDetachedFromWindow() { 1690 super.onDetachedFromWindow(); 1691 mWallpaperOffset.setWindowToken(null); 1692 } 1693 1694 protected void onResume() { 1695 if (getPageIndicator() != null) { 1696 // In case accessibility state has changed, we need to perform this on every 1697 // attach to window 1698 OnClickListener listener = getPageIndicatorClickListener(); 1699 if (listener != null) { 1700 getPageIndicator().setOnClickListener(listener); 1701 } 1702 } 1703 1704 // Update wallpaper dimensions if they were changed since last onResume 1705 // (we also always set the wallpaper dimensions in the constructor) 1706 if (LauncherAppState.getInstance().hasWallpaperChangedSinceLastCheck()) { 1707 setWallpaperDimension(); 1708 } 1709 mWallpaperOffset.onResume(); 1710 } 1711 1712 @Override 1713 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1714 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1715 mWallpaperOffset.syncWithScroll(); 1716 mWallpaperOffset.jumpToFinal(); 1717 } 1718 super.onLayout(changed, left, top, right, bottom); 1719 } 1720 1721 @Override 1722 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1723 if (!mLauncher.isAppsViewVisible()) { 1724 final Folder openFolder = getOpenFolder(); 1725 if (openFolder != null) { 1726 return openFolder.requestFocus(direction, previouslyFocusedRect); 1727 } else { 1728 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1729 } 1730 } 1731 return false; 1732 } 1733 1734 @Override 1735 public int getDescendantFocusability() { 1736 if (workspaceInModalState()) { 1737 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1738 } 1739 return super.getDescendantFocusability(); 1740 } 1741 1742 @Override 1743 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1744 if (!mLauncher.isAppsViewVisible()) { 1745 final Folder openFolder = getOpenFolder(); 1746 if (openFolder != null) { 1747 openFolder.addFocusables(views, direction); 1748 } else { 1749 super.addFocusables(views, direction, focusableMode); 1750 } 1751 } 1752 } 1753 1754 public boolean workspaceInModalState() { 1755 return mState != State.NORMAL; 1756 } 1757 1758 void enableChildrenCache(int fromPage, int toPage) { 1759 if (fromPage > toPage) { 1760 final int temp = fromPage; 1761 fromPage = toPage; 1762 toPage = temp; 1763 } 1764 1765 final int screenCount = getChildCount(); 1766 1767 fromPage = Math.max(fromPage, 0); 1768 toPage = Math.min(toPage, screenCount - 1); 1769 1770 for (int i = fromPage; i <= toPage; i++) { 1771 final CellLayout layout = (CellLayout) getChildAt(i); 1772 layout.setChildrenDrawnWithCacheEnabled(true); 1773 layout.setChildrenDrawingCacheEnabled(true); 1774 } 1775 } 1776 1777 void clearChildrenCache() { 1778 final int screenCount = getChildCount(); 1779 for (int i = 0; i < screenCount; i++) { 1780 final CellLayout layout = (CellLayout) getChildAt(i); 1781 layout.setChildrenDrawnWithCacheEnabled(false); 1782 // In software mode, we don't want the items to continue to be drawn into bitmaps 1783 if (!isHardwareAccelerated()) { 1784 layout.setChildrenDrawingCacheEnabled(false); 1785 } 1786 } 1787 } 1788 1789 @Thunk void updateChildrenLayersEnabled(boolean force) { 1790 boolean small = mState == State.OVERVIEW || mIsSwitchingState; 1791 boolean enableChildrenLayers = force || small || mAnimatingViewIntoPlace || isPageMoving(); 1792 1793 if (enableChildrenLayers != mChildrenLayersEnabled) { 1794 mChildrenLayersEnabled = enableChildrenLayers; 1795 if (mChildrenLayersEnabled) { 1796 enableHwLayersOnVisiblePages(); 1797 } else { 1798 for (int i = 0; i < getPageCount(); i++) { 1799 final CellLayout cl = (CellLayout) getChildAt(i); 1800 cl.enableHardwareLayer(false); 1801 } 1802 } 1803 } 1804 } 1805 1806 private void enableHwLayersOnVisiblePages() { 1807 if (mChildrenLayersEnabled) { 1808 final int screenCount = getChildCount(); 1809 getVisiblePages(mTempVisiblePagesRange); 1810 int leftScreen = mTempVisiblePagesRange[0]; 1811 int rightScreen = mTempVisiblePagesRange[1]; 1812 if (leftScreen == rightScreen) { 1813 // make sure we're caching at least two pages always 1814 if (rightScreen < screenCount - 1) { 1815 rightScreen++; 1816 } else if (leftScreen > 0) { 1817 leftScreen--; 1818 } 1819 } 1820 1821 final CellLayout customScreen = mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID); 1822 for (int i = 0; i < screenCount; i++) { 1823 final CellLayout layout = (CellLayout) getPageAt(i); 1824 1825 // enable layers between left and right screen inclusive, except for the 1826 // customScreen, which may animate its content during transitions. 1827 boolean enableLayer = layout != customScreen && 1828 leftScreen <= i && i <= rightScreen && shouldDrawChild(layout); 1829 layout.enableHardwareLayer(enableLayer); 1830 } 1831 } 1832 } 1833 1834 public void buildPageHardwareLayers() { 1835 // force layers to be enabled just for the call to buildLayer 1836 updateChildrenLayersEnabled(true); 1837 if (getWindowToken() != null) { 1838 final int childCount = getChildCount(); 1839 for (int i = 0; i < childCount; i++) { 1840 CellLayout cl = (CellLayout) getChildAt(i); 1841 cl.buildHardwareLayer(); 1842 } 1843 } 1844 updateChildrenLayersEnabled(false); 1845 } 1846 1847 @Override 1848 protected void getVisiblePages(int[] range) { 1849 super.getVisiblePages(range); 1850 if (mForceDrawAdjacentPages) { 1851 // In overview mode, make sure that the two side pages are visible. 1852 range[0] = Utilities.boundToRange(getCurrentPage() - 1, numCustomPages(), range[1]); 1853 range[1] = Utilities.boundToRange(getCurrentPage() + 1, range[0], getPageCount() - 1); 1854 } 1855 } 1856 1857 protected void onWallpaperTap(MotionEvent ev) { 1858 final int[] position = mTempXY; 1859 getLocationOnScreen(position); 1860 1861 int pointerIndex = ev.getActionIndex(); 1862 position[0] += (int) ev.getX(pointerIndex); 1863 position[1] += (int) ev.getY(pointerIndex); 1864 1865 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1866 ev.getAction() == MotionEvent.ACTION_UP 1867 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1868 position[0], position[1], 0, null); 1869 } 1870 1871 /* 1872 * 1873 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1874 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1875 * 1876 * These methods mark the appropriate pages as accepting drops (which alters their visual 1877 * appearance). 1878 * 1879 */ 1880 private static Rect getDrawableBounds(Drawable d) { 1881 Rect bounds = new Rect(); 1882 d.copyBounds(bounds); 1883 if (bounds.width() == 0 || bounds.height() == 0) { 1884 bounds.set(0, 0, d.getIntrinsicWidth(), d.getIntrinsicHeight()); 1885 } else { 1886 bounds.offsetTo(0, 0); 1887 } 1888 if (d instanceof PreloadIconDrawable) { 1889 int inset = -((PreloadIconDrawable) d).getOutset(); 1890 bounds.inset(inset, inset); 1891 } 1892 return bounds; 1893 } 1894 1895 public void onExternalDragStartedWithItem(View v) { 1896 // Compose a drag bitmap with the view scaled to the icon size 1897 DeviceProfile grid = mLauncher.getDeviceProfile(); 1898 int iconSize = grid.iconSizePx; 1899 int bmpWidth = v.getMeasuredWidth(); 1900 int bmpHeight = v.getMeasuredHeight(); 1901 1902 // If this is a text view, use its drawable instead 1903 if (v instanceof TextView) { 1904 Drawable d = getTextViewIcon((TextView) v); 1905 Rect bounds = getDrawableBounds(d); 1906 bmpWidth = bounds.width(); 1907 bmpHeight = bounds.height(); 1908 } 1909 1910 // Compose the bitmap to create the icon from 1911 Bitmap b = Bitmap.createBitmap(bmpWidth, bmpHeight, 1912 Bitmap.Config.ARGB_8888); 1913 mCanvas.setBitmap(b); 1914 drawDragView(v, mCanvas, 0); 1915 mCanvas.setBitmap(null); 1916 1917 // The outline is used to visualize where the item will land if dropped 1918 mDragOutline = createDragOutline(b, DRAG_BITMAP_PADDING, iconSize, iconSize, true); 1919 } 1920 1921 public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, boolean clipAlpha) { 1922 // Find a page that has enough space to place this widget (after rearranging/resizing). 1923 // Start at the current page and search right (on LTR) until finding a page with enough 1924 // space. Since an empty screen is the furthest right, a page must be found. 1925 int currentPageInOverview = getPageNearestToCenterOfScreen(); 1926 for (int pageIndex = currentPageInOverview; pageIndex < getPageCount(); pageIndex++) { 1927 CellLayout page = (CellLayout) getPageAt(pageIndex); 1928 if (page.hasReorderSolution(info)) { 1929 setCurrentPage(pageIndex); 1930 break; 1931 } 1932 } 1933 1934 int[] size = estimateItemSize(info, false); 1935 1936 // The outline is used to visualize where the item will land if dropped 1937 mDragOutline = createDragOutline(b, DRAG_BITMAP_PADDING, size[0], size[1], clipAlpha); 1938 } 1939 1940 public void exitWidgetResizeMode() { 1941 DragLayer dragLayer = mLauncher.getDragLayer(); 1942 dragLayer.clearAllResizeFrames(); 1943 } 1944 1945 @Override 1946 protected void getFreeScrollPageRange(int[] range) { 1947 getOverviewModePages(range); 1948 } 1949 1950 private void getOverviewModePages(int[] range) { 1951 int start = numCustomPages(); 1952 int end = getChildCount() - 1; 1953 1954 range[0] = Math.max(0, Math.min(start, getChildCount() - 1)); 1955 range[1] = Math.max(0, end); 1956 } 1957 1958 public void onStartReordering() { 1959 super.onStartReordering(); 1960 // Reordering handles its own animations, disable the automatic ones. 1961 disableLayoutTransitions(); 1962 } 1963 1964 public void onEndReordering() { 1965 super.onEndReordering(); 1966 1967 if (mLauncher.isWorkspaceLoading()) { 1968 // Invalid and dangerous operation if workspace is loading 1969 return; 1970 } 1971 1972 mScreenOrder.clear(); 1973 int count = getChildCount(); 1974 for (int i = 0; i < count; i++) { 1975 CellLayout cl = ((CellLayout) getChildAt(i)); 1976 mScreenOrder.add(getIdForScreen(cl)); 1977 } 1978 1979 mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); 1980 1981 // Re-enable auto layout transitions for page deletion. 1982 enableLayoutTransitions(); 1983 } 1984 1985 public boolean isInOverviewMode() { 1986 return mState == State.OVERVIEW; 1987 } 1988 1989 public void snapToPageFromOverView(int whichPage) { 1990 mStateTransitionAnimation.snapToPageFromOverView(whichPage); 1991 } 1992 1993 int getOverviewModeTranslationY() { 1994 DeviceProfile grid = mLauncher.getDeviceProfile(); 1995 Rect workspacePadding = grid.getWorkspacePadding(); 1996 int overviewButtonBarHeight = grid.getOverviewModeButtonBarHeight(); 1997 1998 int scaledHeight = (int) (mOverviewModeShrinkFactor * getNormalChildHeight()); 1999 int workspaceTop = mInsets.top + workspacePadding.top; 2000 int workspaceBottom = getViewportHeight() - mInsets.bottom - workspacePadding.bottom; 2001 int overviewTop = mInsets.top; 2002 int overviewBottom = getViewportHeight() - mInsets.bottom - overviewButtonBarHeight; 2003 int workspaceOffsetTopEdge = workspaceTop + ((workspaceBottom - workspaceTop) - scaledHeight) / 2; 2004 int overviewOffsetTopEdge = overviewTop + (overviewBottom - overviewTop - scaledHeight) / 2; 2005 return -workspaceOffsetTopEdge + overviewOffsetTopEdge; 2006 } 2007 2008 float getSpringLoadedTranslationY() { 2009 DeviceProfile grid = mLauncher.getDeviceProfile(); 2010 if (grid.isVerticalBarLayout() || getChildCount() == 0) { 2011 return 0; 2012 } 2013 Rect workspacePadding = grid.getWorkspacePadding(); 2014 2015 float scaledHeight = grid.workspaceSpringLoadShrinkFactor * getNormalChildHeight(); 2016 float shrunkTop = mInsets.top + grid.dropTargetBarSizePx; 2017 float shrunkBottom = getViewportHeight() - mInsets.bottom 2018 - workspacePadding.bottom - grid.workspaceSpringLoadedBottomSpace; 2019 float totalShrunkSpace = shrunkBottom - shrunkTop; 2020 2021 float desiredCellTop = shrunkTop + (totalShrunkSpace - scaledHeight) / 2; 2022 2023 float halfHeight = getHeight() / 2; 2024 float myCenter = getTop() + halfHeight; 2025 float cellTopFromCenter = halfHeight - getChildAt(0).getTop(); 2026 float actualCellTop = myCenter - cellTopFromCenter * grid.workspaceSpringLoadShrinkFactor; 2027 return (desiredCellTop - actualCellTop) / grid.workspaceSpringLoadShrinkFactor; 2028 } 2029 2030 float getOverviewModeShrinkFactor() { 2031 return mOverviewModeShrinkFactor; 2032 } 2033 2034 /** 2035 * Sets the current workspace {@link State}, returning an animation transitioning the workspace 2036 * to that new state. 2037 */ 2038 public Animator setStateWithAnimation(State toState, boolean animated, 2039 HashMap<View, Integer> layerViews) { 2040 // Create the animation to the new state 2041 AnimatorSet workspaceAnim = mStateTransitionAnimation.getAnimationToState(mState, 2042 toState, animated, layerViews); 2043 2044 boolean shouldNotifyWidgetChange = !mState.shouldUpdateWidget 2045 && toState.shouldUpdateWidget; 2046 // Update the current state 2047 mState = toState; 2048 updateAccessibilityFlags(); 2049 2050 if (shouldNotifyWidgetChange) { 2051 mLauncher.notifyWidgetProvidersChanged(); 2052 } 2053 2054 if (mOnStateChangeListener != null) { 2055 mOnStateChangeListener.prepareStateChange(toState, animated ? workspaceAnim : null); 2056 } 2057 2058 return workspaceAnim; 2059 } 2060 2061 State getState() { 2062 return mState; 2063 } 2064 2065 public void updateAccessibilityFlags() { 2066 if (Utilities.ATLEAST_LOLLIPOP) { 2067 int total = getPageCount(); 2068 for (int i = numCustomPages(); i < total; i++) { 2069 updateAccessibilityFlags((CellLayout) getPageAt(i), i); 2070 } 2071 setImportantForAccessibility((mState == State.NORMAL || mState == State.OVERVIEW) 2072 ? IMPORTANT_FOR_ACCESSIBILITY_AUTO 2073 : IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS); 2074 } else { 2075 int accessible = mState == State.NORMAL ? 2076 IMPORTANT_FOR_ACCESSIBILITY_AUTO : 2077 IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS; 2078 setImportantForAccessibility(accessible); 2079 } 2080 } 2081 2082 private void updateAccessibilityFlags(CellLayout page, int pageNo) { 2083 if (mState == State.OVERVIEW) { 2084 page.setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_YES); 2085 page.getShortcutsAndWidgets().setImportantForAccessibility( 2086 IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS); 2087 page.setContentDescription(getPageDescription(pageNo)); 2088 2089 if (mPagesAccessibilityDelegate == null) { 2090 mPagesAccessibilityDelegate = new OverviewScreenAccessibilityDelegate(this); 2091 } 2092 page.setAccessibilityDelegate(mPagesAccessibilityDelegate); 2093 } else { 2094 int accessible = mState == State.NORMAL ? 2095 IMPORTANT_FOR_ACCESSIBILITY_AUTO : 2096 IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS; 2097 page.setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_NO); 2098 page.getShortcutsAndWidgets().setImportantForAccessibility(accessible); 2099 page.setContentDescription(null); 2100 page.setAccessibilityDelegate(null); 2101 } 2102 } 2103 2104 @Override 2105 public void onLauncherTransitionPrepare(Launcher l, boolean animated, 2106 boolean multiplePagesVisible) { 2107 mIsSwitchingState = true; 2108 mTransitionProgress = 0; 2109 2110 if (multiplePagesVisible) { 2111 mForceDrawAdjacentPages = true; 2112 } 2113 invalidate(); // This will call dispatchDraw(), which calls getVisiblePages(). 2114 2115 updateChildrenLayersEnabled(false); 2116 hideCustomContentIfNecessary(); 2117 } 2118 2119 @Override 2120 public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) { 2121 if (mPageIndicator instanceof PageIndicator) { 2122 boolean isNewStateSpringLoaded = mState == State.SPRING_LOADED; 2123 mPageIndicator.setShouldAutoHide(!isNewStateSpringLoaded); 2124 if (isNewStateSpringLoaded) { 2125 // Show the page indicator at the same time as the rest of the transition. 2126 showPageIndicatorAtCurrentScroll(); 2127 } 2128 } 2129 } 2130 2131 @Override 2132 public void onLauncherTransitionStep(Launcher l, float t) { 2133 mTransitionProgress = t; 2134 } 2135 2136 @Override 2137 public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) { 2138 mIsSwitchingState = false; 2139 updateChildrenLayersEnabled(false); 2140 showCustomContentIfNecessary(); 2141 mForceDrawAdjacentPages = false; 2142 if (mState == State.SPRING_LOADED) { 2143 showPageIndicatorAtCurrentScroll(); 2144 } 2145 } 2146 2147 void updateCustomContentVisibility() { 2148 int visibility = mState == Workspace.State.NORMAL ? VISIBLE : INVISIBLE; 2149 setCustomContentVisibility(visibility); 2150 } 2151 2152 void setCustomContentVisibility(int visibility) { 2153 if (hasCustomContent()) { 2154 mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID).setVisibility(visibility); 2155 } 2156 } 2157 2158 void showCustomContentIfNecessary() { 2159 boolean show = mState == Workspace.State.NORMAL; 2160 if (show && hasCustomContent()) { 2161 mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID).setVisibility(VISIBLE); 2162 } 2163 } 2164 2165 void hideCustomContentIfNecessary() { 2166 boolean hide = mState != Workspace.State.NORMAL; 2167 if (hide && hasCustomContent()) { 2168 disableLayoutTransitions(); 2169 mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID).setVisibility(INVISIBLE); 2170 enableLayoutTransitions(); 2171 } 2172 } 2173 2174 /** 2175 * Returns the drawable for the given text view. 2176 */ 2177 public static Drawable getTextViewIcon(TextView tv) { 2178 final Drawable[] drawables = tv.getCompoundDrawables(); 2179 for (int i = 0; i < drawables.length; i++) { 2180 if (drawables[i] != null) { 2181 return drawables[i]; 2182 } 2183 } 2184 return null; 2185 } 2186 2187 /** 2188 * Draw the View v into the given Canvas. 2189 * 2190 * @param v the view to draw 2191 * @param destCanvas the canvas to draw on 2192 * @param padding the horizontal and vertical padding to use when drawing 2193 */ 2194 private static void drawDragView(View v, Canvas destCanvas, int padding) { 2195 destCanvas.save(); 2196 if (v instanceof TextView) { 2197 Drawable d = getTextViewIcon((TextView) v); 2198 Rect bounds = getDrawableBounds(d); 2199 destCanvas.translate(padding / 2 - bounds.left, padding / 2 - bounds.top); 2200 d.draw(destCanvas); 2201 } else { 2202 final Rect clipRect = sTempRect; 2203 v.getDrawingRect(clipRect); 2204 2205 boolean textVisible = false; 2206 if (v instanceof FolderIcon) { 2207 // For FolderIcons the text can bleed into the icon area, and so we need to 2208 // hide the text completely (which can't be achieved by clipping). 2209 if (((FolderIcon) v).getTextVisible()) { 2210 ((FolderIcon) v).setTextVisible(false); 2211 textVisible = true; 2212 } 2213 } 2214 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 2215 destCanvas.clipRect(clipRect, Op.REPLACE); 2216 v.draw(destCanvas); 2217 2218 // Restore text visibility of FolderIcon if necessary 2219 if (textVisible) { 2220 ((FolderIcon) v).setTextVisible(true); 2221 } 2222 } 2223 destCanvas.restore(); 2224 } 2225 2226 /** 2227 * Returns a new bitmap to show when the given View is being dragged around. 2228 * Responsibility for the bitmap is transferred to the caller. 2229 * @param expectedPadding padding to add to the drag view. If a different padding was used 2230 * its value will be changed 2231 */ 2232 public Bitmap createDragBitmap(View v, AtomicInteger expectedPadding) { 2233 Bitmap b; 2234 2235 int padding = expectedPadding.get(); 2236 if (v instanceof TextView) { 2237 Drawable d = getTextViewIcon((TextView) v); 2238 Rect bounds = getDrawableBounds(d); 2239 b = Bitmap.createBitmap(bounds.width() + padding, 2240 bounds.height() + padding, Bitmap.Config.ARGB_8888); 2241 expectedPadding.set(padding - bounds.left - bounds.top); 2242 } else { 2243 b = Bitmap.createBitmap( 2244 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 2245 } 2246 2247 mCanvas.setBitmap(b); 2248 drawDragView(v, mCanvas, padding); 2249 mCanvas.setBitmap(null); 2250 2251 return b; 2252 } 2253 2254 /** 2255 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2256 * Responsibility for the bitmap is transferred to the caller. 2257 */ 2258 private Bitmap createDragOutline(View v, int padding) { 2259 final int outlineColor = getResources().getColor(R.color.outline_color); 2260 final Bitmap b = Bitmap.createBitmap( 2261 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 2262 2263 mCanvas.setBitmap(b); 2264 drawDragView(v, mCanvas, padding); 2265 mOutlineHelper.applyExpensiveOutlineWithBlur(b, mCanvas, outlineColor, outlineColor); 2266 mCanvas.setBitmap(null); 2267 return b; 2268 } 2269 2270 /** 2271 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2272 * Responsibility for the bitmap is transferred to the caller. 2273 */ 2274 private Bitmap createDragOutline(Bitmap orig, int padding, int w, int h, 2275 boolean clipAlpha) { 2276 final int outlineColor = getResources().getColor(R.color.outline_color); 2277 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 2278 mCanvas.setBitmap(b); 2279 2280 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 2281 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 2282 (h - padding) / (float) orig.getHeight()); 2283 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 2284 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 2285 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 2286 2287 // center the image 2288 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 2289 2290 mCanvas.drawBitmap(orig, src, dst, null); 2291 mOutlineHelper.applyExpensiveOutlineWithBlur(b, mCanvas, outlineColor, outlineColor, 2292 clipAlpha); 2293 mCanvas.setBitmap(null); 2294 2295 return b; 2296 } 2297 2298 public void startDrag(CellLayout.CellInfo cellInfo) { 2299 startDrag(cellInfo, false); 2300 } 2301 2302 @Override 2303 public void startDrag(CellLayout.CellInfo cellInfo, boolean accessible) { 2304 View child = cellInfo.cell; 2305 2306 // Make sure the drag was started by a long press as opposed to a long click. 2307 if (!child.isInTouchMode()) { 2308 return; 2309 } 2310 2311 mDragInfo = cellInfo; 2312 child.setVisibility(INVISIBLE); 2313 CellLayout layout = (CellLayout) child.getParent().getParent(); 2314 layout.prepareChildForDrag(child); 2315 2316 beginDragShared(child, this, accessible); 2317 } 2318 2319 public void beginDragShared(View child, DragSource source, boolean accessible) { 2320 beginDragShared(child, new Point(), source, accessible); 2321 } 2322 2323 public void beginDragShared(View child, Point relativeTouchPos, DragSource source, 2324 boolean accessible) { 2325 child.clearFocus(); 2326 child.setPressed(false); 2327 2328 // The outline is used to visualize where the item will land if dropped 2329 mDragOutline = createDragOutline(child, DRAG_BITMAP_PADDING); 2330 2331 mLauncher.onDragStarted(child); 2332 // The drag bitmap follows the touch point around on the screen 2333 AtomicInteger padding = new AtomicInteger(DRAG_BITMAP_PADDING); 2334 final Bitmap b = createDragBitmap(child, padding); 2335 2336 final int bmpWidth = b.getWidth(); 2337 final int bmpHeight = b.getHeight(); 2338 2339 float scale = mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 2340 int dragLayerX = Math.round(mTempXY[0] - (bmpWidth - scale * child.getWidth()) / 2); 2341 int dragLayerY = Math.round(mTempXY[1] - (bmpHeight - scale * bmpHeight) / 2 2342 - padding.get() / 2); 2343 2344 DeviceProfile grid = mLauncher.getDeviceProfile(); 2345 Point dragVisualizeOffset = null; 2346 Rect dragRect = null; 2347 if (child instanceof BubbleTextView) { 2348 BubbleTextView icon = (BubbleTextView) child; 2349 int iconSize = grid.iconSizePx; 2350 int top = child.getPaddingTop(); 2351 int left = (bmpWidth - iconSize) / 2; 2352 int right = left + iconSize; 2353 int bottom = top + iconSize; 2354 if (icon.isLayoutHorizontal()) { 2355 // If the layout is horizontal, then if we are just picking up the icon, then just 2356 // use the child position since the icon is top-left aligned. Otherwise, offset 2357 // the drag layer position horizontally so that the icon is under the current 2358 // touch position. 2359 if (icon.getIcon().getBounds().contains(relativeTouchPos.x, relativeTouchPos.y)) { 2360 dragLayerX = Math.round(mTempXY[0]); 2361 } else { 2362 dragLayerX = Math.round(mTempXY[0] + relativeTouchPos.x - (bmpWidth / 2)); 2363 } 2364 } 2365 dragLayerY += top; 2366 // Note: The drag region is used to calculate drag layer offsets, but the 2367 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 2368 dragVisualizeOffset = new Point(-padding.get() / 2, padding.get() / 2); 2369 dragRect = new Rect(left, top, right, bottom); 2370 } else if (child instanceof FolderIcon) { 2371 int previewSize = grid.folderIconSizePx; 2372 dragVisualizeOffset = new Point(-padding.get() / 2, 2373 padding.get() / 2 - child.getPaddingTop()); 2374 dragRect = new Rect(0, child.getPaddingTop(), child.getWidth(), previewSize); 2375 } 2376 2377 // Clear the pressed state if necessary 2378 if (child instanceof BubbleTextView) { 2379 BubbleTextView icon = (BubbleTextView) child; 2380 icon.clearPressedBackground(); 2381 } 2382 2383 Object dragObject = child.getTag(); 2384 if (!(dragObject instanceof ItemInfo)) { 2385 String msg = "Drag started with a view that has no tag set. This " 2386 + "will cause a crash (issue 11627249) down the line. " 2387 + "View: " + child + " tag: " + child.getTag(); 2388 throw new IllegalStateException(msg); 2389 } 2390 2391 if (child.getParent() instanceof ShortcutAndWidgetContainer) { 2392 mDragSourceInternal = (ShortcutAndWidgetContainer) child.getParent(); 2393 } 2394 2395 DragView dv = mDragController.startDrag(b, dragLayerX, dragLayerY, source, 2396 (ItemInfo) dragObject, DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, 2397 dragRect, scale, accessible); 2398 dv.setIntrinsicIconScaleFactor(source.getIntrinsicIconScaleFactor()); 2399 2400 b.recycle(); 2401 2402 if (!FeatureFlags.LAUNCHER3_LEGACY_WORKSPACE_DND) { 2403 mLauncher.enterSpringLoadedDragMode(); 2404 } 2405 } 2406 2407 public void beginExternalDragShared(View child, DragSource source) { 2408 DeviceProfile grid = mLauncher.getDeviceProfile(); 2409 int iconSize = grid.iconSizePx; 2410 2411 // Notify launcher of drag start 2412 mLauncher.onDragStarted(child); 2413 2414 // Compose a new drag bitmap that is of the icon size 2415 AtomicInteger padding = new AtomicInteger(DRAG_BITMAP_PADDING); 2416 final Bitmap tmpB = createDragBitmap(child, padding); 2417 Bitmap b = Bitmap.createBitmap(iconSize, iconSize, Bitmap.Config.ARGB_8888); 2418 Paint p = new Paint(); 2419 p.setFilterBitmap(true); 2420 mCanvas.setBitmap(b); 2421 mCanvas.drawBitmap(tmpB, new Rect(0, 0, tmpB.getWidth(), tmpB.getHeight()), 2422 new Rect(0, 0, iconSize, iconSize), p); 2423 mCanvas.setBitmap(null); 2424 2425 // Find the child's location on the screen 2426 int bmpWidth = tmpB.getWidth(); 2427 float iconScale = (float) bmpWidth / iconSize; 2428 float scale = mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY) * iconScale; 2429 int dragLayerX = Math.round(mTempXY[0] - (bmpWidth - scale * child.getWidth()) / 2); 2430 int dragLayerY = Math.round(mTempXY[1]); 2431 2432 // Note: The drag region is used to calculate drag layer offsets, but the 2433 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 2434 Point dragVisualizeOffset = new Point(-padding.get() / 2, padding.get() / 2); 2435 Rect dragRect = new Rect(0, 0, iconSize, iconSize); 2436 2437 Object dragObject = child.getTag(); 2438 if (!(dragObject instanceof ItemInfo)) { 2439 String msg = "Drag started with a view that has no tag set. This " 2440 + "will cause a crash (issue 11627249) down the line. " 2441 + "View: " + child + " tag: " + child.getTag(); 2442 throw new IllegalStateException(msg); 2443 } 2444 2445 // Start the drag 2446 DragView dv = mDragController.startDrag(b, dragLayerX, dragLayerY, source, 2447 (ItemInfo) dragObject, DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, 2448 dragRect, scale, false); 2449 dv.setIntrinsicIconScaleFactor(source.getIntrinsicIconScaleFactor()); 2450 2451 // Recycle temporary bitmaps 2452 tmpB.recycle(); 2453 2454 if (!FeatureFlags.LAUNCHER3_LEGACY_WORKSPACE_DND) { 2455 mLauncher.enterSpringLoadedDragMode(); 2456 } 2457 } 2458 2459 public boolean transitionStateShouldAllowDrop() { 2460 return ((!isSwitchingState() || mTransitionProgress > 0.5f) && 2461 (mState == State.NORMAL || mState == State.SPRING_LOADED)); 2462 } 2463 2464 /** 2465 * {@inheritDoc} 2466 */ 2467 public boolean acceptDrop(DragObject d) { 2468 // If it's an external drop (e.g. from All Apps), check if it should be accepted 2469 CellLayout dropTargetLayout = mDropToLayout; 2470 if (d.dragSource != this) { 2471 // Don't accept the drop if we're not over a screen at time of drop 2472 if (dropTargetLayout == null) { 2473 return false; 2474 } 2475 if (!transitionStateShouldAllowDrop()) return false; 2476 2477 mDragViewVisualCenter = d.getVisualCenter(mDragViewVisualCenter); 2478 2479 // We want the point to be mapped to the dragTarget. 2480 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 2481 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2482 } else { 2483 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter); 2484 } 2485 2486 int spanX = 1; 2487 int spanY = 1; 2488 if (mDragInfo != null) { 2489 final CellLayout.CellInfo dragCellInfo = mDragInfo; 2490 spanX = dragCellInfo.spanX; 2491 spanY = dragCellInfo.spanY; 2492 } else { 2493 spanX = d.dragInfo.spanX; 2494 spanY = d.dragInfo.spanY; 2495 } 2496 2497 int minSpanX = spanX; 2498 int minSpanY = spanY; 2499 if (d.dragInfo instanceof PendingAddWidgetInfo) { 2500 minSpanX = ((PendingAddWidgetInfo) d.dragInfo).minSpanX; 2501 minSpanY = ((PendingAddWidgetInfo) d.dragInfo).minSpanY; 2502 } 2503 2504 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2505 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, dropTargetLayout, 2506 mTargetCell); 2507 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2508 mDragViewVisualCenter[1], mTargetCell); 2509 if (mCreateUserFolderOnDrop && willCreateUserFolder(d.dragInfo, 2510 dropTargetLayout, mTargetCell, distance, true)) { 2511 return true; 2512 } 2513 2514 if (mAddToExistingFolderOnDrop && willAddToExistingUserFolder(d.dragInfo, 2515 dropTargetLayout, mTargetCell, distance)) { 2516 return true; 2517 } 2518 2519 int[] resultSpan = new int[2]; 2520 mTargetCell = dropTargetLayout.performReorder((int) mDragViewVisualCenter[0], 2521 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2522 null, mTargetCell, resultSpan, CellLayout.MODE_ACCEPT_DROP); 2523 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2524 2525 // Don't accept the drop if there's no room for the item 2526 if (!foundCell) { 2527 // Don't show the message if we are dropping on the AllApps button and the hotseat 2528 // is full 2529 boolean isHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2530 if (mTargetCell != null && isHotseat && !FeatureFlags.NO_ALL_APPS_ICON) { 2531 Hotseat hotseat = mLauncher.getHotseat(); 2532 if (mLauncher.getDeviceProfile().inv.isAllAppsButtonRank( 2533 hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { 2534 return false; 2535 } 2536 } 2537 2538 mLauncher.showOutOfSpaceMessage(isHotseat); 2539 return false; 2540 } 2541 } 2542 2543 long screenId = getIdForScreen(dropTargetLayout); 2544 if (screenId == EXTRA_EMPTY_SCREEN_ID) { 2545 commitExtraEmptyScreen(); 2546 } 2547 2548 return true; 2549 } 2550 2551 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, 2552 float distance, boolean considerTimeout) { 2553 if (distance > mMaxDistanceForFolderCreation) return false; 2554 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2555 return willCreateUserFolder(info, dropOverView, considerTimeout); 2556 } 2557 2558 boolean willCreateUserFolder(ItemInfo info, View dropOverView, boolean considerTimeout) { 2559 if (dropOverView != null) { 2560 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2561 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.cellY)) { 2562 return false; 2563 } 2564 } 2565 2566 boolean hasntMoved = false; 2567 if (mDragInfo != null) { 2568 hasntMoved = dropOverView == mDragInfo.cell; 2569 } 2570 2571 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2572 return false; 2573 } 2574 2575 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2576 boolean willBecomeShortcut = 2577 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2578 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2579 2580 return (aboveShortcut && willBecomeShortcut); 2581 } 2582 2583 boolean willAddToExistingUserFolder(ItemInfo dragInfo, CellLayout target, int[] targetCell, 2584 float distance) { 2585 if (distance > mMaxDistanceForFolderCreation) return false; 2586 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2587 return willAddToExistingUserFolder(dragInfo, dropOverView); 2588 2589 } 2590 boolean willAddToExistingUserFolder(ItemInfo dragInfo, View dropOverView) { 2591 if (dropOverView != null) { 2592 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2593 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.cellY)) { 2594 return false; 2595 } 2596 } 2597 2598 if (dropOverView instanceof FolderIcon) { 2599 FolderIcon fi = (FolderIcon) dropOverView; 2600 if (fi.acceptDrop(dragInfo)) { 2601 return true; 2602 } 2603 } 2604 return false; 2605 } 2606 2607 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2608 int[] targetCell, float distance, boolean external, DragView dragView, 2609 Runnable postAnimationRunnable) { 2610 if (distance > mMaxDistanceForFolderCreation) return false; 2611 View v = target.getChildAt(targetCell[0], targetCell[1]); 2612 2613 boolean hasntMoved = false; 2614 if (mDragInfo != null) { 2615 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2616 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2617 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2618 } 2619 2620 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2621 mCreateUserFolderOnDrop = false; 2622 final long screenId = getIdForScreen(target); 2623 2624 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2625 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2626 2627 if (aboveShortcut && willBecomeShortcut) { 2628 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2629 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2630 // if the drag started here, we need to remove it from the workspace 2631 if (!external) { 2632 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2633 } 2634 2635 Rect folderLocation = new Rect(); 2636 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2637 target.removeView(v); 2638 2639 FolderIcon fi = 2640 mLauncher.addFolder(target, container, screenId, targetCell[0], targetCell[1]); 2641 destInfo.cellX = -1; 2642 destInfo.cellY = -1; 2643 sourceInfo.cellX = -1; 2644 sourceInfo.cellY = -1; 2645 2646 // If the dragView is null, we can't animate 2647 boolean animate = dragView != null; 2648 if (animate) { 2649 // In order to keep everything continuous, we hand off the currently rendered 2650 // folder background to the newly created icon. This preserves animation state. 2651 fi.setFolderBackground(mFolderCreateBg); 2652 mFolderCreateBg = new FolderIcon.PreviewBackground(); 2653 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2654 postAnimationRunnable); 2655 } else { 2656 fi.addItem(destInfo); 2657 fi.addItem(sourceInfo); 2658 } 2659 return true; 2660 } 2661 return false; 2662 } 2663 2664 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2665 float distance, DragObject d, boolean external) { 2666 if (distance > mMaxDistanceForFolderCreation) return false; 2667 2668 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2669 if (!mAddToExistingFolderOnDrop) return false; 2670 mAddToExistingFolderOnDrop = false; 2671 2672 if (dropOverView instanceof FolderIcon) { 2673 FolderIcon fi = (FolderIcon) dropOverView; 2674 if (fi.acceptDrop(d.dragInfo)) { 2675 fi.onDrop(d); 2676 2677 // if the drag started here, we need to remove it from the workspace 2678 if (!external) { 2679 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2680 } 2681 return true; 2682 } 2683 } 2684 return false; 2685 } 2686 2687 @Override 2688 public void prepareAccessibilityDrop() { } 2689 2690 public void onDrop(final DragObject d) { 2691 mDragViewVisualCenter = d.getVisualCenter(mDragViewVisualCenter); 2692 CellLayout dropTargetLayout = mDropToLayout; 2693 2694 // We want the point to be mapped to the dragTarget. 2695 if (dropTargetLayout != null) { 2696 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 2697 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2698 } else { 2699 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter); 2700 } 2701 } 2702 2703 int snapScreen = -1; 2704 boolean resizeOnDrop = false; 2705 if (d.dragSource != this) { 2706 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2707 (int) mDragViewVisualCenter[1] }; 2708 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2709 } else if (mDragInfo != null) { 2710 final View cell = mDragInfo.cell; 2711 2712 if (dropTargetLayout != null && !d.cancelled) { 2713 // Move internally 2714 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2715 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2716 long container = hasMovedIntoHotseat ? 2717 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2718 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2719 long screenId = (mTargetCell[0] < 0) ? 2720 mDragInfo.screenId : getIdForScreen(dropTargetLayout); 2721 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2722 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2723 // First we find the cell nearest to point at which the item is 2724 // dropped, without any consideration to whether there is an item there. 2725 2726 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2727 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2728 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2729 mDragViewVisualCenter[1], mTargetCell); 2730 2731 // If the item being dropped is a shortcut and the nearest drop 2732 // cell also contains a shortcut, then create a folder with the two shortcuts. 2733 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2734 dropTargetLayout, mTargetCell, distance, false, d.dragView, null)) { 2735 return; 2736 } 2737 2738 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, 2739 distance, d, false)) { 2740 return; 2741 } 2742 2743 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2744 // we need to find the nearest cell location that is vacant 2745 ItemInfo item = d.dragInfo; 2746 int minSpanX = item.spanX; 2747 int minSpanY = item.spanY; 2748 if (item.minSpanX > 0 && item.minSpanY > 0) { 2749 minSpanX = item.minSpanX; 2750 minSpanY = item.minSpanY; 2751 } 2752 2753 int[] resultSpan = new int[2]; 2754 mTargetCell = dropTargetLayout.performReorder((int) mDragViewVisualCenter[0], 2755 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, cell, 2756 mTargetCell, resultSpan, CellLayout.MODE_ON_DROP); 2757 2758 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2759 2760 // if the widget resizes on drop 2761 if (foundCell && (cell instanceof AppWidgetHostView) && 2762 (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY)) { 2763 resizeOnDrop = true; 2764 item.spanX = resultSpan[0]; 2765 item.spanY = resultSpan[1]; 2766 AppWidgetHostView awhv = (AppWidgetHostView) cell; 2767 AppWidgetResizeFrame.updateWidgetSizeRanges(awhv, mLauncher, resultSpan[0], 2768 resultSpan[1]); 2769 } 2770 2771 if (getScreenIdForPageIndex(mCurrentPage) != screenId && !hasMovedIntoHotseat) { 2772 snapScreen = getPageIndexForScreenId(screenId); 2773 snapToPage(snapScreen); 2774 } 2775 2776 if (foundCell) { 2777 final ItemInfo info = (ItemInfo) cell.getTag(); 2778 if (hasMovedLayouts) { 2779 // Reparent the view 2780 CellLayout parentCell = getParentCellLayoutForView(cell); 2781 if (parentCell != null) { 2782 parentCell.removeView(cell); 2783 } else if (ProviderConfig.IS_DOGFOOD_BUILD) { 2784 throw new NullPointerException("mDragInfo.cell has null parent"); 2785 } 2786 addInScreen(cell, container, screenId, mTargetCell[0], mTargetCell[1], 2787 info.spanX, info.spanY); 2788 } 2789 2790 // update the item's position after drop 2791 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2792 lp.cellX = lp.tmpCellX = mTargetCell[0]; 2793 lp.cellY = lp.tmpCellY = mTargetCell[1]; 2794 lp.cellHSpan = item.spanX; 2795 lp.cellVSpan = item.spanY; 2796 lp.isLockedToGrid = true; 2797 2798 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2799 cell instanceof LauncherAppWidgetHostView) { 2800 final CellLayout cellLayout = dropTargetLayout; 2801 // We post this call so that the widget has a chance to be placed 2802 // in its final location 2803 2804 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2805 AppWidgetProviderInfo pInfo = hostView.getAppWidgetInfo(); 2806 if (pInfo != null && pInfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE 2807 && !d.accessibleDrag) { 2808 mDelayedResizeRunnable = new Runnable() { 2809 public void run() { 2810 if (!isPageMoving() && !mIsSwitchingState) { 2811 DragLayer dragLayer = mLauncher.getDragLayer(); 2812 dragLayer.addResizeFrame(info, hostView, cellLayout); 2813 } 2814 } 2815 }; 2816 } 2817 } 2818 2819 LauncherModel.modifyItemInDatabase(mLauncher, info, container, screenId, lp.cellX, 2820 lp.cellY, item.spanX, item.spanY); 2821 } else { 2822 // If we can't find a drop location, we return the item to its original position 2823 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2824 mTargetCell[0] = lp.cellX; 2825 mTargetCell[1] = lp.cellY; 2826 CellLayout layout = (CellLayout) cell.getParent().getParent(); 2827 layout.markCellsAsOccupiedForView(cell); 2828 } 2829 } 2830 2831 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2832 // Prepare it to be animated into its new position 2833 // This must be called after the view has been re-parented 2834 final Runnable onCompleteRunnable = new Runnable() { 2835 @Override 2836 public void run() { 2837 mAnimatingViewIntoPlace = false; 2838 updateChildrenLayersEnabled(false); 2839 } 2840 }; 2841 mAnimatingViewIntoPlace = true; 2842 if (d.dragView.hasDrawn()) { 2843 final ItemInfo info = (ItemInfo) cell.getTag(); 2844 boolean isWidget = info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET 2845 || info.itemType == LauncherSettings.Favorites.ITEM_TYPE_CUSTOM_APPWIDGET; 2846 if (isWidget) { 2847 int animationType = resizeOnDrop ? ANIMATE_INTO_POSITION_AND_RESIZE : 2848 ANIMATE_INTO_POSITION_AND_DISAPPEAR; 2849 animateWidgetDrop(info, parent, d.dragView, 2850 onCompleteRunnable, animationType, cell, false); 2851 } else { 2852 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2853 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2854 onCompleteRunnable, this); 2855 } 2856 } else { 2857 d.deferDragViewCleanupPostAnimation = false; 2858 cell.setVisibility(VISIBLE); 2859 } 2860 parent.onDropChild(cell); 2861 } 2862 } 2863 2864 /** 2865 * Computes the area relative to dragLayer which is used to display a page. 2866 */ 2867 public void getPageAreaRelativeToDragLayer(Rect outArea) { 2868 CellLayout child = (CellLayout) getChildAt(getNextPage()); 2869 if (child == null) { 2870 return; 2871 } 2872 ShortcutAndWidgetContainer boundingLayout = child.getShortcutsAndWidgets(); 2873 2874 // Use the absolute left instead of the child left, as we want the visible area 2875 // irrespective of the visible child. Since the view can only scroll horizontally, the 2876 // top position is not affected. 2877 mTempXY[0] = getViewportOffsetX() + getPaddingLeft() + boundingLayout.getLeft(); 2878 mTempXY[1] = child.getTop() + boundingLayout.getTop(); 2879 2880 float scale = mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(this, mTempXY); 2881 outArea.set(mTempXY[0], mTempXY[1], 2882 (int) (mTempXY[0] + scale * boundingLayout.getMeasuredWidth()), 2883 (int) (mTempXY[1] + scale * boundingLayout.getMeasuredHeight())); 2884 } 2885 2886 @Override 2887 public void onDragEnter(DragObject d) { 2888 if (ENFORCE_DRAG_EVENT_ORDER) { 2889 enfoceDragParity("onDragEnter", 1, 1); 2890 } 2891 2892 mCreateUserFolderOnDrop = false; 2893 mAddToExistingFolderOnDrop = false; 2894 2895 mDropToLayout = null; 2896 CellLayout layout = getCurrentDropLayout(); 2897 setCurrentDropLayout(layout); 2898 setCurrentDragOverlappingLayout(layout); 2899 2900 if (!workspaceInModalState() && FeatureFlags.LAUNCHER3_LEGACY_WORKSPACE_DND) { 2901 mLauncher.getDragLayer().showPageHints(); 2902 } 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 // Invalidating the scrim will also force this CellLayout 2982 // to be invalidated so that it is highlighted if necessary. 2983 mLauncher.getDragLayer().invalidateScrim(); 2984 } 2985 2986 public CellLayout getCurrentDragOverlappingLayout() { 2987 return mDragOverlappingLayout; 2988 } 2989 2990 void setCurrentDropOverCell(int x, int y) { 2991 if (x != mDragOverX || y != mDragOverY) { 2992 mDragOverX = x; 2993 mDragOverY = y; 2994 setDragMode(DRAG_MODE_NONE); 2995 } 2996 } 2997 2998 void setDragMode(int dragMode) { 2999 if (dragMode != mDragMode) { 3000 if (dragMode == DRAG_MODE_NONE) { 3001 cleanupAddToFolder(); 3002 // We don't want to cancel the re-order alarm every time the target cell changes 3003 // as this feels to slow / unresponsive. 3004 cleanupReorder(false); 3005 cleanupFolderCreation(); 3006 } else if (dragMode == DRAG_MODE_ADD_TO_FOLDER) { 3007 cleanupReorder(true); 3008 cleanupFolderCreation(); 3009 } else if (dragMode == DRAG_MODE_CREATE_FOLDER) { 3010 cleanupAddToFolder(); 3011 cleanupReorder(true); 3012 } else if (dragMode == DRAG_MODE_REORDER) { 3013 cleanupAddToFolder(); 3014 cleanupFolderCreation(); 3015 } 3016 mDragMode = dragMode; 3017 } 3018 } 3019 3020 private void cleanupFolderCreation() { 3021 if (mFolderCreateBg != null) { 3022 mFolderCreateBg.animateToRest(); 3023 } 3024 mFolderCreationAlarm.setOnAlarmListener(null); 3025 mFolderCreationAlarm.cancelAlarm(); 3026 } 3027 3028 private void cleanupAddToFolder() { 3029 if (mDragOverFolderIcon != null) { 3030 mDragOverFolderIcon.onDragExit(null); 3031 mDragOverFolderIcon = null; 3032 } 3033 } 3034 3035 private void cleanupReorder(boolean cancelAlarm) { 3036 // Any pending reorders are canceled 3037 if (cancelAlarm) { 3038 mReorderAlarm.cancelAlarm(); 3039 } 3040 mLastReorderX = -1; 3041 mLastReorderY = -1; 3042 } 3043 3044 /* 3045 * 3046 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 3047 * coordinate space. The argument xy is modified with the return result. 3048 */ 3049 void mapPointFromSelfToChild(View v, float[] xy) { 3050 xy[0] = xy[0] - v.getLeft(); 3051 xy[1] = xy[1] - v.getTop(); 3052 } 3053 3054 boolean isPointInSelfOverHotseat(int x, int y) { 3055 mTempXY[0] = x; 3056 mTempXY[1] = y; 3057 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(this, mTempXY, true); 3058 return mLauncher.getDeviceProfile().isInHotseatRect(mTempXY[0], mTempXY[1]); 3059 } 3060 3061 void mapPointFromSelfToHotseatLayout(Hotseat hotseat, float[] xy) { 3062 mTempXY[0] = (int) xy[0]; 3063 mTempXY[1] = (int) xy[1]; 3064 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(this, mTempXY, true); 3065 mLauncher.getDragLayer().mapCoordInSelfToDescendent(hotseat.getLayout(), mTempXY); 3066 3067 xy[0] = mTempXY[0]; 3068 xy[1] = mTempXY[1]; 3069 } 3070 3071 /* 3072 * 3073 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 3074 * the parent View's coordinate space. The argument xy is modified with the return result. 3075 * 3076 */ 3077 void mapPointFromChildToSelf(View v, float[] xy) { 3078 xy[0] += v.getLeft(); 3079 xy[1] += v.getTop(); 3080 } 3081 3082 static private float squaredDistance(float[] point1, float[] point2) { 3083 float distanceX = point1[0] - point2[0]; 3084 float distanceY = point2[1] - point2[1]; 3085 return distanceX * distanceX + distanceY * distanceY; 3086 } 3087 3088 /* 3089 * 3090 * This method returns the CellLayout that is currently being dragged to. In order to drag 3091 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 3092 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 3093 * 3094 * Return null if no CellLayout is currently being dragged over 3095 * 3096 */ 3097 private CellLayout findMatchingPageForDragOver( 3098 DragView dragView, float originX, float originY, boolean exact) { 3099 // We loop through all the screens (ie CellLayouts) and see which ones overlap 3100 // with the item being dragged and then choose the one that's closest to the touch point 3101 final int screenCount = getChildCount(); 3102 CellLayout bestMatchingScreen = null; 3103 float smallestDistSoFar = Float.MAX_VALUE; 3104 3105 for (int i = 0; i < screenCount; i++) { 3106 // The custom content screen is not a valid drag over option 3107 if (mScreenOrder.get(i) == CUSTOM_CONTENT_SCREEN_ID) { 3108 continue; 3109 } 3110 3111 CellLayout cl = (CellLayout) getChildAt(i); 3112 3113 final float[] touchXy = {originX, originY}; 3114 mapPointFromSelfToChild(cl, touchXy); 3115 3116 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 3117 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 3118 return cl; 3119 } 3120 3121 if (!exact) { 3122 // Get the center of the cell layout in screen coordinates 3123 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 3124 cellLayoutCenter[0] = cl.getWidth()/2; 3125 cellLayoutCenter[1] = cl.getHeight()/2; 3126 mapPointFromChildToSelf(cl, cellLayoutCenter); 3127 3128 touchXy[0] = originX; 3129 touchXy[1] = originY; 3130 3131 // Calculate the distance between the center of the CellLayout 3132 // and the touch point 3133 float dist = squaredDistance(touchXy, cellLayoutCenter); 3134 3135 if (dist < smallestDistSoFar) { 3136 smallestDistSoFar = dist; 3137 bestMatchingScreen = cl; 3138 } 3139 } 3140 } 3141 return bestMatchingScreen; 3142 } 3143 3144 private boolean isDragWidget(DragObject d) { 3145 return (d.dragInfo instanceof LauncherAppWidgetInfo || 3146 d.dragInfo instanceof PendingAddWidgetInfo); 3147 } 3148 private boolean isExternalDragWidget(DragObject d) { 3149 return d.dragSource != this && isDragWidget(d); 3150 } 3151 3152 public void onDragOver(DragObject d) { 3153 // Skip drag over events while we are dragging over side pages 3154 if (mInScrollArea || !transitionStateShouldAllowDrop()) return; 3155 3156 CellLayout layout = null; 3157 ItemInfo item = d.dragInfo; 3158 if (item == null) { 3159 if (ProviderConfig.IS_DOGFOOD_BUILD) { 3160 throw new NullPointerException("DragObject has null info"); 3161 } 3162 return; 3163 } 3164 3165 // Ensure that we have proper spans for the item that we are dropping 3166 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 3167 mDragViewVisualCenter = d.getVisualCenter(mDragViewVisualCenter); 3168 3169 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 3170 // Identify whether we have dragged over a side page 3171 if (workspaceInModalState()) { 3172 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 3173 if (isPointInSelfOverHotseat(d.x, d.y)) { 3174 layout = mLauncher.getHotseat().getLayout(); 3175 } 3176 } 3177 if (layout == null) { 3178 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false); 3179 } 3180 if (layout != mDragTargetLayout) { 3181 setCurrentDropLayout(layout); 3182 setCurrentDragOverlappingLayout(layout); 3183 3184 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 3185 if (isInSpringLoadedMode) { 3186 if (mLauncher.isHotseatLayout(layout)) { 3187 mSpringLoadedDragController.cancel(); 3188 } else { 3189 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 3190 } 3191 } 3192 } 3193 } else { 3194 // Test to see if we are over the hotseat otherwise just use the current page 3195 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 3196 if (isPointInSelfOverHotseat(d.x, d.y)) { 3197 layout = mLauncher.getHotseat().getLayout(); 3198 } 3199 } 3200 if (layout == null) { 3201 layout = getCurrentDropLayout(); 3202 } 3203 if (layout != mDragTargetLayout) { 3204 setCurrentDropLayout(layout); 3205 setCurrentDragOverlappingLayout(layout); 3206 } 3207 } 3208 3209 // Handle the drag over 3210 if (mDragTargetLayout != null) { 3211 // We want the point to be mapped to the dragTarget. 3212 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 3213 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 3214 } else { 3215 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter); 3216 } 3217 3218 int minSpanX = item.spanX; 3219 int minSpanY = item.spanY; 3220 if (item.minSpanX > 0 && item.minSpanY > 0) { 3221 minSpanX = item.minSpanX; 3222 minSpanY = item.minSpanY; 3223 } 3224 3225 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 3226 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, 3227 mDragTargetLayout, mTargetCell); 3228 int reorderX = mTargetCell[0]; 3229 int reorderY = mTargetCell[1]; 3230 3231 setCurrentDropOverCell(mTargetCell[0], mTargetCell[1]); 3232 3233 float targetCellDistance = mDragTargetLayout.getDistanceFromCell( 3234 mDragViewVisualCenter[0], mDragViewVisualCenter[1], mTargetCell); 3235 3236 manageFolderFeedback(mDragTargetLayout, mTargetCell, targetCellDistance, d); 3237 3238 boolean nearestDropOccupied = mDragTargetLayout.isNearestDropLocationOccupied((int) 3239 mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], item.spanX, 3240 item.spanY, child, mTargetCell); 3241 3242 if (!nearestDropOccupied) { 3243 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 3244 mTargetCell[0], mTargetCell[1], item.spanX, item.spanY, false, d); 3245 } else if ((mDragMode == DRAG_MODE_NONE || mDragMode == DRAG_MODE_REORDER) 3246 && !mReorderAlarm.alarmPending() && (mLastReorderX != reorderX || 3247 mLastReorderY != reorderY)) { 3248 3249 int[] resultSpan = new int[2]; 3250 mDragTargetLayout.performReorder((int) mDragViewVisualCenter[0], 3251 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, item.spanX, item.spanY, 3252 child, mTargetCell, resultSpan, CellLayout.MODE_SHOW_REORDER_HINT); 3253 3254 // Otherwise, if we aren't adding to or creating a folder and there's no pending 3255 // reorder, then we schedule a reorder 3256 ReorderAlarmListener listener = new ReorderAlarmListener(mDragViewVisualCenter, 3257 minSpanX, minSpanY, item.spanX, item.spanY, d, child); 3258 mReorderAlarm.setOnAlarmListener(listener); 3259 mReorderAlarm.setAlarm(REORDER_TIMEOUT); 3260 } 3261 3262 if (mDragMode == DRAG_MODE_CREATE_FOLDER || mDragMode == DRAG_MODE_ADD_TO_FOLDER || 3263 !nearestDropOccupied) { 3264 if (mDragTargetLayout != null) { 3265 mDragTargetLayout.revertTempState(); 3266 } 3267 } 3268 } 3269 } 3270 3271 private void manageFolderFeedback(CellLayout targetLayout, 3272 int[] targetCell, float distance, DragObject dragObject) { 3273 if (distance > mMaxDistanceForFolderCreation) return; 3274 3275 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], mTargetCell[1]); 3276 ItemInfo info = dragObject.dragInfo; 3277 boolean userFolderPending = willCreateUserFolder(info, dragOverView, false); 3278 if (mDragMode == DRAG_MODE_NONE && userFolderPending && 3279 !mFolderCreationAlarm.alarmPending()) { 3280 3281 FolderCreationAlarmListener listener = new 3282 FolderCreationAlarmListener(targetLayout, targetCell[0], targetCell[1]); 3283 3284 if (!dragObject.accessibleDrag) { 3285 mFolderCreationAlarm.setOnAlarmListener(listener); 3286 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 3287 } else { 3288 listener.onAlarm(mFolderCreationAlarm); 3289 } 3290 3291 if (dragObject.stateAnnouncer != null) { 3292 dragObject.stateAnnouncer.announce(WorkspaceAccessibilityHelper 3293 .getDescriptionForDropOver(dragOverView, getContext())); 3294 } 3295 return; 3296 } 3297 3298 boolean willAddToFolder = willAddToExistingUserFolder(info, dragOverView); 3299 if (willAddToFolder && mDragMode == DRAG_MODE_NONE) { 3300 mDragOverFolderIcon = ((FolderIcon) dragOverView); 3301 mDragOverFolderIcon.onDragEnter(info); 3302 if (targetLayout != null) { 3303 targetLayout.clearDragOutlines(); 3304 } 3305 setDragMode(DRAG_MODE_ADD_TO_FOLDER); 3306 3307 if (dragObject.stateAnnouncer != null) { 3308 dragObject.stateAnnouncer.announce(WorkspaceAccessibilityHelper 3309 .getDescriptionForDropOver(dragOverView, getContext())); 3310 } 3311 return; 3312 } 3313 3314 if (mDragMode == DRAG_MODE_ADD_TO_FOLDER && !willAddToFolder) { 3315 setDragMode(DRAG_MODE_NONE); 3316 } 3317 if (mDragMode == DRAG_MODE_CREATE_FOLDER && !userFolderPending) { 3318 setDragMode(DRAG_MODE_NONE); 3319 } 3320 } 3321 3322 class FolderCreationAlarmListener implements OnAlarmListener { 3323 CellLayout layout; 3324 int cellX; 3325 int cellY; 3326 3327 FolderIcon.PreviewBackground bg = new FolderIcon.PreviewBackground(); 3328 3329 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 3330 this.layout = layout; 3331 this.cellX = cellX; 3332 this.cellY = cellY; 3333 3334 DeviceProfile grid = mLauncher.getDeviceProfile(); 3335 BubbleTextView cell = (BubbleTextView) layout.getChildAt(cellX, cellY); 3336 3337 bg.setup(getResources().getDisplayMetrics(), grid, null, 3338 cell.getMeasuredWidth(), cell.getPaddingTop()); 3339 3340 // The full preview background should appear behind the icon 3341 bg.isClipping = false; 3342 } 3343 3344 public void onAlarm(Alarm alarm) { 3345 mFolderCreateBg = bg; 3346 mFolderCreateBg.animateToAccept(layout, cellX, cellY); 3347 layout.clearDragOutlines(); 3348 setDragMode(DRAG_MODE_CREATE_FOLDER); 3349 } 3350 } 3351 3352 class ReorderAlarmListener implements OnAlarmListener { 3353 float[] dragViewCenter; 3354 int minSpanX, minSpanY, spanX, spanY; 3355 DragObject dragObject; 3356 View child; 3357 3358 public ReorderAlarmListener(float[] dragViewCenter, int minSpanX, int minSpanY, int spanX, 3359 int spanY, DragObject dragObject, View child) { 3360 this.dragViewCenter = dragViewCenter; 3361 this.minSpanX = minSpanX; 3362 this.minSpanY = minSpanY; 3363 this.spanX = spanX; 3364 this.spanY = spanY; 3365 this.child = child; 3366 this.dragObject = dragObject; 3367 } 3368 3369 public void onAlarm(Alarm alarm) { 3370 int[] resultSpan = new int[2]; 3371 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 3372 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, mDragTargetLayout, 3373 mTargetCell); 3374 mLastReorderX = mTargetCell[0]; 3375 mLastReorderY = mTargetCell[1]; 3376 3377 mTargetCell = mDragTargetLayout.performReorder((int) mDragViewVisualCenter[0], 3378 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 3379 child, mTargetCell, resultSpan, CellLayout.MODE_DRAG_OVER); 3380 3381 if (mTargetCell[0] < 0 || mTargetCell[1] < 0) { 3382 mDragTargetLayout.revertTempState(); 3383 } else { 3384 setDragMode(DRAG_MODE_REORDER); 3385 } 3386 3387 boolean resize = resultSpan[0] != spanX || resultSpan[1] != spanY; 3388 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 3389 mTargetCell[0], mTargetCell[1], resultSpan[0], resultSpan[1], resize, dragObject); 3390 } 3391 } 3392 3393 @Override 3394 public void getHitRectRelativeToDragLayer(Rect outRect) { 3395 // We want the workspace to have the whole area of the display (it will find the correct 3396 // cell layout to drop to in the existing drag/drop logic. 3397 mLauncher.getDragLayer().getDescendantRectRelativeToSelf(this, outRect); 3398 } 3399 3400 /** 3401 * Drop an item that didn't originate on one of the workspace screens. 3402 * It may have come from Launcher (e.g. from all apps or customize), or it may have 3403 * come from another app altogether. 3404 * 3405 * NOTE: This can also be called when we are outside of a drag event, when we want 3406 * to add an item to one of the workspace screens. 3407 */ 3408 private void onDropExternal(final int[] touchXY, final ItemInfo dragInfo, 3409 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 3410 final Runnable exitSpringLoadedRunnable = new Runnable() { 3411 @Override 3412 public void run() { 3413 mLauncher.exitSpringLoadedDragModeDelayed(true, 3414 Launcher.EXIT_SPRINGLOADED_MODE_SHORT_TIMEOUT, null); 3415 } 3416 }; 3417 3418 ItemInfo info = dragInfo; 3419 int spanX = info.spanX; 3420 int spanY = info.spanY; 3421 if (mDragInfo != null) { 3422 spanX = mDragInfo.spanX; 3423 spanY = mDragInfo.spanY; 3424 } 3425 3426 final long container = mLauncher.isHotseatLayout(cellLayout) ? 3427 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 3428 LauncherSettings.Favorites.CONTAINER_DESKTOP; 3429 final long screenId = getIdForScreen(cellLayout); 3430 if (!mLauncher.isHotseatLayout(cellLayout) 3431 && screenId != getScreenIdForPageIndex(mCurrentPage) 3432 && mState != State.SPRING_LOADED) { 3433 snapToScreenId(screenId, null); 3434 } 3435 3436 if (info instanceof PendingAddItemInfo) { 3437 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 3438 3439 boolean findNearestVacantCell = true; 3440 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 3441 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3442 cellLayout, mTargetCell); 3443 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3444 mDragViewVisualCenter[1], mTargetCell); 3445 if (willCreateUserFolder(d.dragInfo, cellLayout, mTargetCell, distance, true) 3446 || willAddToExistingUserFolder( 3447 d.dragInfo, cellLayout, mTargetCell, distance)) { 3448 findNearestVacantCell = false; 3449 } 3450 } 3451 3452 final ItemInfo item = d.dragInfo; 3453 boolean updateWidgetSize = false; 3454 if (findNearestVacantCell) { 3455 int minSpanX = item.spanX; 3456 int minSpanY = item.spanY; 3457 if (item.minSpanX > 0 && item.minSpanY > 0) { 3458 minSpanX = item.minSpanX; 3459 minSpanY = item.minSpanY; 3460 } 3461 int[] resultSpan = new int[2]; 3462 mTargetCell = cellLayout.performReorder((int) mDragViewVisualCenter[0], 3463 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, info.spanX, info.spanY, 3464 null, mTargetCell, resultSpan, CellLayout.MODE_ON_DROP_EXTERNAL); 3465 3466 if (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY) { 3467 updateWidgetSize = true; 3468 } 3469 item.spanX = resultSpan[0]; 3470 item.spanY = resultSpan[1]; 3471 } 3472 3473 Runnable onAnimationCompleteRunnable = new Runnable() { 3474 @Override 3475 public void run() { 3476 // Normally removeExtraEmptyScreen is called in Workspace#onDragEnd, but when 3477 // adding an item that may not be dropped right away (due to a config activity) 3478 // we defer the removal until the activity returns. 3479 deferRemoveExtraEmptyScreen(); 3480 3481 // When dragging and dropping from customization tray, we deal with creating 3482 // widgets/shortcuts/folders in a slightly different way 3483 mLauncher.addPendingItem(pendingInfo, container, screenId, mTargetCell, 3484 item.spanX, item.spanY); 3485 } 3486 }; 3487 boolean isWidget = pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET 3488 || pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_CUSTOM_APPWIDGET; 3489 3490 AppWidgetHostView finalView = isWidget ? 3491 ((PendingAddWidgetInfo) pendingInfo).boundWidget : null; 3492 3493 if (finalView != null && updateWidgetSize) { 3494 AppWidgetResizeFrame.updateWidgetSizeRanges(finalView, mLauncher, item.spanX, 3495 item.spanY); 3496 } 3497 3498 int animationStyle = ANIMATE_INTO_POSITION_AND_DISAPPEAR; 3499 if (isWidget && ((PendingAddWidgetInfo) pendingInfo).info != null && 3500 ((PendingAddWidgetInfo) pendingInfo).info.configure != null) { 3501 animationStyle = ANIMATE_INTO_POSITION_AND_REMAIN; 3502 } 3503 animateWidgetDrop(info, cellLayout, d.dragView, onAnimationCompleteRunnable, 3504 animationStyle, finalView, true); 3505 } else { 3506 // This is for other drag/drop cases, like dragging from All Apps 3507 View view = null; 3508 3509 switch (info.itemType) { 3510 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 3511 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3512 if (info.container == NO_ID && info instanceof AppInfo) { 3513 // Came from all apps -- make a copy 3514 info = ((AppInfo) info).makeShortcut(); 3515 } 3516 view = mLauncher.createShortcut(cellLayout, (ShortcutInfo) info); 3517 break; 3518 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 3519 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 3520 (FolderInfo) info, mIconCache); 3521 break; 3522 default: 3523 throw new IllegalStateException("Unknown item type: " + info.itemType); 3524 } 3525 3526 // First we find the cell nearest to point at which the item is 3527 // dropped, without any consideration to whether there is an item there. 3528 if (touchXY != null) { 3529 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3530 cellLayout, mTargetCell); 3531 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3532 mDragViewVisualCenter[1], mTargetCell); 3533 d.postAnimationRunnable = exitSpringLoadedRunnable; 3534 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, distance, 3535 true, d.dragView, d.postAnimationRunnable)) { 3536 return; 3537 } 3538 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, distance, d, 3539 true)) { 3540 return; 3541 } 3542 } 3543 3544 if (touchXY != null) { 3545 // when dragging and dropping, just find the closest free spot 3546 mTargetCell = cellLayout.performReorder((int) mDragViewVisualCenter[0], 3547 (int) mDragViewVisualCenter[1], 1, 1, 1, 1, 3548 null, mTargetCell, null, CellLayout.MODE_ON_DROP_EXTERNAL); 3549 } else { 3550 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3551 } 3552 // Add the item to DB before adding to screen ensures that the container and other 3553 // values of the info is properly updated. 3554 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screenId, 3555 mTargetCell[0], mTargetCell[1]); 3556 3557 addInScreen(view, container, screenId, mTargetCell[0], mTargetCell[1], info.spanX, 3558 info.spanY, insertAtFirst); 3559 cellLayout.onDropChild(view); 3560 cellLayout.getShortcutsAndWidgets().measureChild(view); 3561 3562 if (d.dragView != null) { 3563 // We wrap the animation call in the temporary set and reset of the current 3564 // cellLayout to its final transform -- this means we animate the drag view to 3565 // the correct final location. 3566 setFinalTransitionTransform(cellLayout); 3567 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 3568 exitSpringLoadedRunnable, this); 3569 resetTransitionTransform(cellLayout); 3570 } 3571 } 3572 } 3573 3574 public Bitmap createWidgetBitmap(ItemInfo widgetInfo, View layout) { 3575 int[] unScaledSize = mLauncher.getWorkspace().estimateItemSize(widgetInfo, false); 3576 int visibility = layout.getVisibility(); 3577 layout.setVisibility(VISIBLE); 3578 3579 int width = MeasureSpec.makeMeasureSpec(unScaledSize[0], MeasureSpec.EXACTLY); 3580 int height = MeasureSpec.makeMeasureSpec(unScaledSize[1], MeasureSpec.EXACTLY); 3581 Bitmap b = Bitmap.createBitmap(unScaledSize[0], unScaledSize[1], 3582 Bitmap.Config.ARGB_8888); 3583 mCanvas.setBitmap(b); 3584 3585 layout.measure(width, height); 3586 layout.layout(0, 0, unScaledSize[0], unScaledSize[1]); 3587 layout.draw(mCanvas); 3588 mCanvas.setBitmap(null); 3589 layout.setVisibility(visibility); 3590 return b; 3591 } 3592 3593 private void getFinalPositionForDropAnimation(int[] loc, float[] scaleXY, 3594 DragView dragView, CellLayout layout, ItemInfo info, int[] targetCell, boolean scale) { 3595 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 3596 // location and size on the home screen. 3597 int spanX = info.spanX; 3598 int spanY = info.spanY; 3599 3600 Rect r = estimateItemPosition(layout, targetCell[0], targetCell[1], spanX, spanY); 3601 loc[0] = r.left; 3602 loc[1] = r.top; 3603 3604 setFinalTransitionTransform(layout); 3605 float cellLayoutScale = 3606 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(layout, loc, true); 3607 resetTransitionTransform(layout); 3608 3609 float dragViewScaleX; 3610 float dragViewScaleY; 3611 if (scale) { 3612 dragViewScaleX = (1.0f * r.width()) / dragView.getMeasuredWidth(); 3613 dragViewScaleY = (1.0f * r.height()) / dragView.getMeasuredHeight(); 3614 } else { 3615 dragViewScaleX = 1f; 3616 dragViewScaleY = 1f; 3617 } 3618 3619 // The animation will scale the dragView about its center, so we need to center about 3620 // the final location. 3621 loc[0] -= (dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2 3622 - Math.ceil(layout.getUnusedHorizontalSpace() / 2f); 3623 loc[1] -= (dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 3624 3625 scaleXY[0] = dragViewScaleX * cellLayoutScale; 3626 scaleXY[1] = dragViewScaleY * cellLayoutScale; 3627 } 3628 3629 public void animateWidgetDrop(ItemInfo info, CellLayout cellLayout, final DragView dragView, 3630 final Runnable onCompleteRunnable, int animationType, final View finalView, 3631 boolean external) { 3632 Rect from = new Rect(); 3633 mLauncher.getDragLayer().getViewRectRelativeToSelf(dragView, from); 3634 3635 int[] finalPos = new int[2]; 3636 float scaleXY[] = new float[2]; 3637 boolean scalePreview = !(info instanceof PendingAddShortcutInfo); 3638 getFinalPositionForDropAnimation(finalPos, scaleXY, dragView, cellLayout, info, mTargetCell, 3639 scalePreview); 3640 3641 Resources res = mLauncher.getResources(); 3642 final int duration = res.getInteger(R.integer.config_dropAnimMaxDuration) - 200; 3643 3644 boolean isWidget = info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET || 3645 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_CUSTOM_APPWIDGET; 3646 if ((animationType == ANIMATE_INTO_POSITION_AND_RESIZE || external) && finalView != null) { 3647 Bitmap crossFadeBitmap = createWidgetBitmap(info, finalView); 3648 dragView.setCrossFadeBitmap(crossFadeBitmap); 3649 dragView.crossFade((int) (duration * 0.8f)); 3650 } else if (isWidget && external) { 3651 scaleXY[0] = scaleXY[1] = Math.min(scaleXY[0], scaleXY[1]); 3652 } 3653 3654 DragLayer dragLayer = mLauncher.getDragLayer(); 3655 if (animationType == CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION) { 3656 mLauncher.getDragLayer().animateViewIntoPosition(dragView, finalPos, 0f, 0.1f, 0.1f, 3657 DragLayer.ANIMATION_END_DISAPPEAR, onCompleteRunnable, duration); 3658 } else { 3659 int endStyle; 3660 if (animationType == ANIMATE_INTO_POSITION_AND_REMAIN) { 3661 endStyle = DragLayer.ANIMATION_END_REMAIN_VISIBLE; 3662 } else { 3663 endStyle = DragLayer.ANIMATION_END_DISAPPEAR; 3664 } 3665 3666 Runnable onComplete = new Runnable() { 3667 @Override 3668 public void run() { 3669 if (finalView != null) { 3670 finalView.setVisibility(VISIBLE); 3671 } 3672 if (onCompleteRunnable != null) { 3673 onCompleteRunnable.run(); 3674 } 3675 } 3676 }; 3677 dragLayer.animateViewIntoPosition(dragView, from.left, from.top, finalPos[0], 3678 finalPos[1], 1, 1, 1, scaleXY[0], scaleXY[1], onComplete, endStyle, 3679 duration, this); 3680 } 3681 } 3682 3683 public void setFinalTransitionTransform(CellLayout layout) { 3684 if (isSwitchingState()) { 3685 mCurrentScale = getScaleX(); 3686 setScaleX(mStateTransitionAnimation.getFinalScale()); 3687 setScaleY(mStateTransitionAnimation.getFinalScale()); 3688 } 3689 } 3690 public void resetTransitionTransform(CellLayout layout) { 3691 if (isSwitchingState()) { 3692 setScaleX(mCurrentScale); 3693 setScaleY(mCurrentScale); 3694 } 3695 } 3696 3697 public WorkspaceStateTransitionAnimation getStateTransitionAnimation() { 3698 return mStateTransitionAnimation; 3699 } 3700 3701 /** 3702 * Return the current {@link CellLayout}, correctly picking the destination 3703 * screen while a scroll is in progress. 3704 */ 3705 public CellLayout getCurrentDropLayout() { 3706 return (CellLayout) getChildAt(getNextPage()); 3707 } 3708 3709 /** 3710 * Return the current CellInfo describing our current drag; this method exists 3711 * so that Launcher can sync this object with the correct info when the activity is created/ 3712 * destroyed 3713 * 3714 */ 3715 public CellLayout.CellInfo getDragInfo() { 3716 return mDragInfo; 3717 } 3718 3719 public int getCurrentPageOffsetFromCustomContent() { 3720 return getNextPage() - numCustomPages(); 3721 } 3722 3723 /** 3724 * Calculate the nearest cell where the given object would be dropped. 3725 * 3726 * pixelX and pixelY should be in the coordinate system of layout 3727 */ 3728 @Thunk int[] findNearestArea(int pixelX, int pixelY, 3729 int spanX, int spanY, CellLayout layout, int[] recycle) { 3730 return layout.findNearestArea( 3731 pixelX, pixelY, spanX, spanY, recycle); 3732 } 3733 3734 void setup(DragController dragController) { 3735 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3736 mDragController = dragController; 3737 3738 // hardware layers on children are enabled on startup, but should be disabled until 3739 // needed 3740 updateChildrenLayersEnabled(false); 3741 } 3742 3743 /** 3744 * Called at the end of a drag which originated on the workspace. 3745 */ 3746 public void onDropCompleted(final View target, final DragObject d, 3747 final boolean isFlingToDelete, final boolean success) { 3748 if (mDeferDropAfterUninstall) { 3749 mDeferredAction = new Runnable() { 3750 public void run() { 3751 onDropCompleted(target, d, isFlingToDelete, success); 3752 mDeferredAction = null; 3753 } 3754 }; 3755 return; 3756 } 3757 3758 boolean beingCalledAfterUninstall = mDeferredAction != null; 3759 3760 if (success && !(beingCalledAfterUninstall && !mUninstallSuccessful)) { 3761 if (target != this && mDragInfo != null) { 3762 removeWorkspaceItem(mDragInfo.cell); 3763 } 3764 } else if (mDragInfo != null) { 3765 final CellLayout cellLayout = mLauncher.getCellLayout( 3766 mDragInfo.container, mDragInfo.screenId); 3767 if (cellLayout != null) { 3768 cellLayout.onDropChild(mDragInfo.cell); 3769 } else if (ProviderConfig.IS_DOGFOOD_BUILD) { 3770 throw new RuntimeException("Invalid state: cellLayout == null in " 3771 + "Workspace#onDropCompleted. Please file a bug. "); 3772 }; 3773 } 3774 if ((d.cancelled || (beingCalledAfterUninstall && !mUninstallSuccessful)) 3775 && mDragInfo.cell != null) { 3776 mDragInfo.cell.setVisibility(VISIBLE); 3777 } 3778 mDragOutline = null; 3779 mDragInfo = null; 3780 3781 if (!isFlingToDelete) { 3782 // Fling to delete already exits spring loaded mode after the animation finishes. 3783 mLauncher.exitSpringLoadedDragModeDelayed(success, 3784 Launcher.EXIT_SPRINGLOADED_MODE_SHORT_TIMEOUT, mDelayedResizeRunnable); 3785 mDelayedResizeRunnable = null; 3786 } 3787 } 3788 3789 /** 3790 * For opposite operation. See {@link #addInScreen}. 3791 */ 3792 public void removeWorkspaceItem(View v) { 3793 CellLayout parentCell = getParentCellLayoutForView(v); 3794 if (parentCell != null) { 3795 parentCell.removeView(v); 3796 } else if (ProviderConfig.IS_DOGFOOD_BUILD) { 3797 // When an app is uninstalled using the drop target, we wait until resume to remove 3798 // the icon. We also remove all the corresponding items from the workspace at 3799 // {@link Launcher#bindComponentsRemoved}. That call can come before or after 3800 // {@link Launcher#mOnResumeCallbacks} depending on how busy the worker thread is. 3801 Log.e(TAG, "mDragInfo.cell has null parent"); 3802 } 3803 if (v instanceof DropTarget) { 3804 mDragController.removeDropTarget((DropTarget) v); 3805 } 3806 } 3807 3808 /** 3809 * Removes all folder listeners 3810 */ 3811 public void removeFolderListeners() { 3812 mapOverItems(false, new ItemOperator() { 3813 @Override 3814 public boolean evaluate(ItemInfo info, View view) { 3815 if (view instanceof FolderIcon) { 3816 ((FolderIcon) view).removeListeners(); 3817 } 3818 return false; 3819 } 3820 }); 3821 } 3822 3823 @Override 3824 public void deferCompleteDropAfterUninstallActivity() { 3825 mDeferDropAfterUninstall = true; 3826 } 3827 3828 /// maybe move this into a smaller part 3829 @Override 3830 public void onDragObjectRemoved(boolean success) { 3831 mDeferDropAfterUninstall = false; 3832 mUninstallSuccessful = success; 3833 if (mDeferredAction != null) { 3834 mDeferredAction.run(); 3835 } 3836 } 3837 3838 @Override 3839 public float getIntrinsicIconScaleFactor() { 3840 return 1f; 3841 } 3842 3843 @Override 3844 public boolean supportsFlingToDelete() { 3845 return true; 3846 } 3847 3848 @Override 3849 public boolean supportsAppInfoDropTarget() { 3850 return !FeatureFlags.LAUNCHER3_LEGACY_WORKSPACE_DND; 3851 } 3852 3853 @Override 3854 public boolean supportsDeleteDropTarget() { 3855 return true; 3856 } 3857 3858 @Override 3859 public void onFlingToDelete(DragObject d, PointF vec) { 3860 // Do nothing 3861 } 3862 3863 @Override 3864 public void onFlingToDeleteCompleted() { 3865 // Do nothing 3866 } 3867 3868 public boolean isDropEnabled() { 3869 return true; 3870 } 3871 3872 @Override 3873 protected void dispatchRestoreInstanceState(SparseArray<Parcelable> container) { 3874 // We don't dispatch restoreInstanceState to our children using this code path. 3875 // Some pages will be restored immediately as their items are bound immediately, and 3876 // others we will need to wait until after their items are bound. 3877 mSavedStates = container; 3878 } 3879 3880 public void restoreInstanceStateForChild(int child) { 3881 if (mSavedStates != null) { 3882 mRestoredPages.add(child); 3883 CellLayout cl = (CellLayout) getChildAt(child); 3884 if (cl != null) { 3885 cl.restoreInstanceState(mSavedStates); 3886 } 3887 } 3888 } 3889 3890 public void restoreInstanceStateForRemainingPages() { 3891 int count = getChildCount(); 3892 for (int i = 0; i < count; i++) { 3893 if (!mRestoredPages.contains(i)) { 3894 restoreInstanceStateForChild(i); 3895 } 3896 } 3897 mRestoredPages.clear(); 3898 mSavedStates = null; 3899 } 3900 3901 @Override 3902 public void scrollLeft() { 3903 if (!workspaceInModalState() && !mIsSwitchingState) { 3904 super.scrollLeft(); 3905 } 3906 Folder openFolder = getOpenFolder(); 3907 if (openFolder != null) { 3908 openFolder.completeDragExit(); 3909 } 3910 } 3911 3912 @Override 3913 public void scrollRight() { 3914 if (!workspaceInModalState() && !mIsSwitchingState) { 3915 super.scrollRight(); 3916 } 3917 Folder openFolder = getOpenFolder(); 3918 if (openFolder != null) { 3919 openFolder.completeDragExit(); 3920 } 3921 } 3922 3923 @Override 3924 public boolean onEnterScrollArea(int x, int y, int direction) { 3925 // Ignore the scroll area if we are dragging over the hot seat 3926 boolean isPortrait = !mLauncher.getDeviceProfile().isLandscape; 3927 if (mLauncher.getHotseat() != null && isPortrait) { 3928 Rect r = new Rect(); 3929 mLauncher.getHotseat().getHitRect(r); 3930 if (r.contains(x, y)) { 3931 return false; 3932 } 3933 } 3934 3935 boolean result = false; 3936 if (!workspaceInModalState() && !mIsSwitchingState && getOpenFolder() == null) { 3937 mInScrollArea = true; 3938 3939 final int page = getNextPage() + 3940 (direction == DragController.SCROLL_LEFT ? -1 : 1); 3941 // We always want to exit the current layout to ensure parity of enter / exit 3942 setCurrentDropLayout(null); 3943 3944 if (0 <= page && page < getChildCount()) { 3945 // Ensure that we are not dragging over to the custom content screen 3946 if (getScreenIdForPageIndex(page) == CUSTOM_CONTENT_SCREEN_ID) { 3947 return false; 3948 } 3949 3950 CellLayout layout = (CellLayout) getChildAt(page); 3951 setCurrentDragOverlappingLayout(layout); 3952 3953 // Workspace is responsible for drawing the edge glow on adjacent pages, 3954 // so we need to redraw the workspace when this may have changed. 3955 invalidate(); 3956 result = true; 3957 } 3958 } 3959 return result; 3960 } 3961 3962 @Override 3963 public boolean onExitScrollArea() { 3964 boolean result = false; 3965 if (mInScrollArea) { 3966 invalidate(); 3967 CellLayout layout = getCurrentDropLayout(); 3968 setCurrentDropLayout(layout); 3969 setCurrentDragOverlappingLayout(layout); 3970 3971 result = true; 3972 mInScrollArea = false; 3973 } 3974 return result; 3975 } 3976 3977 private void onResetScrollArea() { 3978 setCurrentDragOverlappingLayout(null); 3979 mInScrollArea = false; 3980 } 3981 3982 /** 3983 * Returns a specific CellLayout 3984 */ 3985 CellLayout getParentCellLayoutForView(View v) { 3986 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3987 for (CellLayout layout : layouts) { 3988 if (layout.getShortcutsAndWidgets().indexOfChild(v) > -1) { 3989 return layout; 3990 } 3991 } 3992 return null; 3993 } 3994 3995 /** 3996 * Returns a list of all the CellLayouts in the workspace. 3997 */ 3998 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3999 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 4000 int screenCount = getChildCount(); 4001 for (int screen = 0; screen < screenCount; screen++) { 4002 layouts.add(((CellLayout) getChildAt(screen))); 4003 } 4004 if (mLauncher.getHotseat() != null) { 4005 layouts.add(mLauncher.getHotseat().getLayout()); 4006 } 4007 return layouts; 4008 } 4009 4010 /** 4011 * We should only use this to search for specific children. Do not use this method to modify 4012 * ShortcutsAndWidgetsContainer directly. Includes ShortcutAndWidgetContainers from 4013 * the hotseat and workspace pages 4014 */ 4015 ArrayList<ShortcutAndWidgetContainer> getAllShortcutAndWidgetContainers() { 4016 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = new ArrayList<>(); 4017 int screenCount = getChildCount(); 4018 for (int screen = 0; screen < screenCount; screen++) { 4019 childrenLayouts.add(((CellLayout) getChildAt(screen)).getShortcutsAndWidgets()); 4020 } 4021 if (mLauncher.getHotseat() != null) { 4022 childrenLayouts.add(mLauncher.getHotseat().getLayout().getShortcutsAndWidgets()); 4023 } 4024 return childrenLayouts; 4025 } 4026 4027 public View getHomescreenIconByItemId(final long id) { 4028 return getFirstMatch(new ItemOperator() { 4029 4030 @Override 4031 public boolean evaluate(ItemInfo info, View v) { 4032 return info != null && info.id == id; 4033 } 4034 }); 4035 } 4036 4037 public View getViewForTag(final Object tag) { 4038 return getFirstMatch(new ItemOperator() { 4039 4040 @Override 4041 public boolean evaluate(ItemInfo info, View v) { 4042 return info == tag; 4043 } 4044 }); 4045 } 4046 4047 public LauncherAppWidgetHostView getWidgetForAppWidgetId(final int appWidgetId) { 4048 return (LauncherAppWidgetHostView) getFirstMatch(new ItemOperator() { 4049 4050 @Override 4051 public boolean evaluate(ItemInfo info, View v) { 4052 return (info instanceof LauncherAppWidgetInfo) && 4053 ((LauncherAppWidgetInfo) info).appWidgetId == appWidgetId; 4054 } 4055 }); 4056 } 4057 4058 public View getFirstMatch(final ItemOperator operator) { 4059 final View[] value = new View[1]; 4060 mapOverItems(MAP_NO_RECURSE, new ItemOperator() { 4061 @Override 4062 public boolean evaluate(ItemInfo info, View v) { 4063 if (operator.evaluate(info, v)) { 4064 value[0] = v; 4065 return true; 4066 } 4067 return false; 4068 } 4069 }); 4070 return value[0]; 4071 } 4072 4073 void clearDropTargets() { 4074 mapOverItems(MAP_NO_RECURSE, new ItemOperator() { 4075 @Override 4076 public boolean evaluate(ItemInfo info, View v) { 4077 if (v instanceof DropTarget) { 4078 mDragController.removeDropTarget((DropTarget) v); 4079 } 4080 // not done, process all the shortcuts 4081 return false; 4082 } 4083 }); 4084 } 4085 4086 // Removes ALL items that match a given package name, this is usually called when a package 4087 // has been removed and we want to remove all components (widgets, shortcuts, apps) that 4088 // belong to that package. 4089 void removeItemsByPackageName(final HashSet<String> packageNames, final UserHandleCompat user) { 4090 // Filter out all the ItemInfos that this is going to affect 4091 final HashSet<ItemInfo> infos = new HashSet<ItemInfo>(); 4092 final HashSet<ComponentName> cns = new HashSet<ComponentName>(); 4093 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 4094 for (CellLayout layoutParent : cellLayouts) { 4095 ViewGroup layout = layoutParent.getShortcutsAndWidgets(); 4096 int childCount = layout.getChildCount(); 4097 for (int i = 0; i < childCount; ++i) { 4098 View view = layout.getChildAt(i); 4099 infos.add((ItemInfo) view.getTag()); 4100 } 4101 } 4102 LauncherModel.ItemInfoFilter filter = new LauncherModel.ItemInfoFilter() { 4103 @Override 4104 public boolean filterItem(ItemInfo parent, ItemInfo info, 4105 ComponentName cn) { 4106 if (packageNames.contains(cn.getPackageName()) 4107 && info.user.equals(user)) { 4108 cns.add(cn); 4109 return true; 4110 } 4111 return false; 4112 } 4113 }; 4114 LauncherModel.filterItemInfos(infos, filter); 4115 4116 // Remove the affected components 4117 removeItemsByComponentName(cns, user); 4118 } 4119 4120 /** 4121 * Removes items that match the item info specified. When applications are removed 4122 * as a part of an update, this is called to ensure that other widgets and application 4123 * shortcuts are not removed. 4124 */ 4125 void removeItemsByComponentName(final HashSet<ComponentName> componentNames, 4126 final UserHandleCompat user) { 4127 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 4128 for (final CellLayout layoutParent: cellLayouts) { 4129 final ViewGroup layout = layoutParent.getShortcutsAndWidgets(); 4130 4131 final HashMap<ItemInfo, View> children = new HashMap<ItemInfo, View>(); 4132 for (int j = 0; j < layout.getChildCount(); j++) { 4133 final View view = layout.getChildAt(j); 4134 children.put((ItemInfo) view.getTag(), view); 4135 } 4136 4137 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 4138 final HashMap<FolderInfo, ArrayList<ShortcutInfo>> folderAppsToRemove = 4139 new HashMap<FolderInfo, ArrayList<ShortcutInfo>>(); 4140 LauncherModel.ItemInfoFilter filter = new LauncherModel.ItemInfoFilter() { 4141 @Override 4142 public boolean filterItem(ItemInfo parent, ItemInfo info, 4143 ComponentName cn) { 4144 if (parent instanceof FolderInfo) { 4145 if (componentNames.contains(cn) && info.user.equals(user)) { 4146 FolderInfo folder = (FolderInfo) parent; 4147 ArrayList<ShortcutInfo> appsToRemove; 4148 if (folderAppsToRemove.containsKey(folder)) { 4149 appsToRemove = folderAppsToRemove.get(folder); 4150 } else { 4151 appsToRemove = new ArrayList<ShortcutInfo>(); 4152 folderAppsToRemove.put(folder, appsToRemove); 4153 } 4154 appsToRemove.add((ShortcutInfo) info); 4155 return true; 4156 } 4157 } else { 4158 if (componentNames.contains(cn) && info.user.equals(user)) { 4159 childrenToRemove.add(children.get(info)); 4160 return true; 4161 } 4162 } 4163 return false; 4164 } 4165 }; 4166 LauncherModel.filterItemInfos(children.keySet(), filter); 4167 4168 // Remove all the apps from their folders 4169 for (FolderInfo folder : folderAppsToRemove.keySet()) { 4170 ArrayList<ShortcutInfo> appsToRemove = folderAppsToRemove.get(folder); 4171 for (ShortcutInfo info : appsToRemove) { 4172 folder.remove(info, false); 4173 } 4174 } 4175 4176 // Remove all the other children 4177 for (View child : childrenToRemove) { 4178 // Note: We can not remove the view directly from CellLayoutChildren as this 4179 // does not re-mark the spaces as unoccupied. 4180 layoutParent.removeViewInLayout(child); 4181 if (child instanceof DropTarget) { 4182 mDragController.removeDropTarget((DropTarget) child); 4183 } 4184 } 4185 4186 if (childrenToRemove.size() > 0) { 4187 layout.requestLayout(); 4188 layout.invalidate(); 4189 } 4190 } 4191 4192 // Strip all the empty screens 4193 stripEmptyScreens(); 4194 } 4195 4196 public interface ItemOperator { 4197 /** 4198 * Process the next itemInfo, possibly with side-effect on {@link ItemOperator#value}. 4199 * 4200 * @param info info for the shortcut 4201 * @param view view for the shortcut 4202 * @return true if done, false to continue the map 4203 */ 4204 public boolean evaluate(ItemInfo info, View view); 4205 } 4206 4207 /** 4208 * Map the operator over the shortcuts and widgets, return the first-non-null value. 4209 * 4210 * @param recurse true: iterate over folder children. false: op get the folders themselves. 4211 * @param op the operator to map over the shortcuts 4212 */ 4213 void mapOverItems(boolean recurse, ItemOperator op) { 4214 ArrayList<ShortcutAndWidgetContainer> containers = getAllShortcutAndWidgetContainers(); 4215 final int containerCount = containers.size(); 4216 for (int containerIdx = 0; containerIdx < containerCount; containerIdx++) { 4217 ShortcutAndWidgetContainer container = containers.get(containerIdx); 4218 // map over all the shortcuts on the workspace 4219 final int itemCount = container.getChildCount(); 4220 for (int itemIdx = 0; itemIdx < itemCount; itemIdx++) { 4221 View item = container.getChildAt(itemIdx); 4222 ItemInfo info = (ItemInfo) item.getTag(); 4223 if (recurse && info instanceof FolderInfo && item instanceof FolderIcon) { 4224 FolderIcon folder = (FolderIcon) item; 4225 ArrayList<View> folderChildren = folder.getFolder().getItemsInReadingOrder(); 4226 // map over all the children in the folder 4227 final int childCount = folderChildren.size(); 4228 for (int childIdx = 0; childIdx < childCount; childIdx++) { 4229 View child = folderChildren.get(childIdx); 4230 info = (ItemInfo) child.getTag(); 4231 if (op.evaluate(info, child)) { 4232 return; 4233 } 4234 } 4235 } else { 4236 if (op.evaluate(info, item)) { 4237 return; 4238 } 4239 } 4240 } 4241 } 4242 } 4243 4244 void updateShortcuts(ArrayList<ShortcutInfo> shortcuts) { 4245 int total = shortcuts.size(); 4246 final HashSet<ShortcutInfo> updates = new HashSet<ShortcutInfo>(total); 4247 final HashSet<Long> folderIds = new HashSet<>(); 4248 4249 for (int i = 0; i < total; i++) { 4250 ShortcutInfo s = shortcuts.get(i); 4251 updates.add(s); 4252 folderIds.add(s.container); 4253 } 4254 4255 mapOverItems(MAP_RECURSE, new ItemOperator() { 4256 @Override 4257 public boolean evaluate(ItemInfo info, View v) { 4258 if (info instanceof ShortcutInfo && v instanceof BubbleTextView && 4259 updates.contains(info)) { 4260 ShortcutInfo si = (ShortcutInfo) info; 4261 BubbleTextView shortcut = (BubbleTextView) v; 4262 Drawable oldIcon = getTextViewIcon(shortcut); 4263 boolean oldPromiseState = (oldIcon instanceof PreloadIconDrawable) 4264 && ((PreloadIconDrawable) oldIcon).hasNotCompleted(); 4265 shortcut.applyFromShortcutInfo(si, mIconCache, 4266 si.isPromise() != oldPromiseState); 4267 } 4268 // process all the shortcuts 4269 return false; 4270 } 4271 }); 4272 4273 // Update folder icons 4274 mapOverItems(MAP_NO_RECURSE, new ItemOperator() { 4275 @Override 4276 public boolean evaluate(ItemInfo info, View v) { 4277 if (info instanceof FolderInfo && folderIds.contains(info.id)) { 4278 ((FolderInfo) info).itemsChanged(false); 4279 } 4280 // process all the shortcuts 4281 return false; 4282 } 4283 }); 4284 } 4285 4286 public void removeAbandonedPromise(String packageName, UserHandleCompat user) { 4287 HashSet<String> packages = new HashSet<>(1); 4288 packages.add(packageName); 4289 LauncherModel.deletePackageFromDatabase(mLauncher, packageName, user); 4290 removeItemsByPackageName(packages, user); 4291 } 4292 4293 public void updateRestoreItems(final HashSet<ItemInfo> updates) { 4294 mapOverItems(MAP_RECURSE, new ItemOperator() { 4295 @Override 4296 public boolean evaluate(ItemInfo info, View v) { 4297 if (info instanceof ShortcutInfo && v instanceof BubbleTextView 4298 && updates.contains(info)) { 4299 ((BubbleTextView) v).applyState(false); 4300 } else if (v instanceof PendingAppWidgetHostView 4301 && info instanceof LauncherAppWidgetInfo 4302 && updates.contains(info)) { 4303 ((PendingAppWidgetHostView) v).applyState(); 4304 } 4305 // process all the shortcuts 4306 return false; 4307 } 4308 }); 4309 } 4310 4311 public void widgetsRestored(final ArrayList<LauncherAppWidgetInfo> changedInfo) { 4312 if (!changedInfo.isEmpty()) { 4313 DeferredWidgetRefresh widgetRefresh = new DeferredWidgetRefresh(changedInfo, 4314 mLauncher.getAppWidgetHost()); 4315 4316 LauncherAppWidgetInfo item = changedInfo.get(0); 4317 final AppWidgetProviderInfo widgetInfo; 4318 if (item.hasRestoreFlag(LauncherAppWidgetInfo.FLAG_ID_NOT_VALID)) { 4319 widgetInfo = AppWidgetManagerCompat 4320 .getInstance(mLauncher).findProvider(item.providerName, item.user); 4321 } else { 4322 widgetInfo = AppWidgetManagerCompat.getInstance(mLauncher) 4323 .getAppWidgetInfo(item.appWidgetId); 4324 } 4325 4326 if (widgetInfo != null) { 4327 // Re-inflate the widgets which have changed status 4328 widgetRefresh.run(); 4329 } else { 4330 // widgetRefresh will automatically run when the packages are updated. 4331 // For now just update the progress bars 4332 mapOverItems(MAP_NO_RECURSE, new ItemOperator() { 4333 @Override 4334 public boolean evaluate(ItemInfo info, View view) { 4335 if (view instanceof PendingAppWidgetHostView 4336 && changedInfo.contains(info)) { 4337 ((LauncherAppWidgetInfo) info).installProgress = 100; 4338 ((PendingAppWidgetHostView) view).applyState(); 4339 } 4340 // process all the shortcuts 4341 return false; 4342 } 4343 }); 4344 } 4345 } 4346 } 4347 4348 private void moveToScreen(int page, boolean animate) { 4349 if (!workspaceInModalState()) { 4350 if (animate) { 4351 snapToPage(page); 4352 } else { 4353 setCurrentPage(page); 4354 } 4355 } 4356 View child = getChildAt(page); 4357 if (child != null) { 4358 child.requestFocus(); 4359 } 4360 } 4361 4362 void moveToDefaultScreen(boolean animate) { 4363 moveToScreen(getDefaultPage(), animate); 4364 } 4365 4366 void moveToCustomContentScreen(boolean animate) { 4367 if (hasCustomContent()) { 4368 int ccIndex = getPageIndexForScreenId(CUSTOM_CONTENT_SCREEN_ID); 4369 if (animate) { 4370 snapToPage(ccIndex); 4371 } else { 4372 setCurrentPage(ccIndex); 4373 } 4374 View child = getChildAt(ccIndex); 4375 if (child != null) { 4376 child.requestFocus(); 4377 } 4378 } 4379 exitWidgetResizeMode(); 4380 } 4381 4382 protected String getPageIndicatorDescription() { 4383 String settings = getResources().getString(R.string.settings_button_text); 4384 return getCurrentPageDescription() + ", " + settings; 4385 } 4386 4387 protected String getCurrentPageDescription() { 4388 if (hasCustomContent() && getNextPage() == 0) { 4389 return mCustomContentDescription; 4390 } 4391 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 4392 return getPageDescription(page); 4393 } 4394 4395 private String getPageDescription(int page) { 4396 int delta = numCustomPages(); 4397 int nScreens = getChildCount() - delta; 4398 int extraScreenId = mScreenOrder.indexOf(EXTRA_EMPTY_SCREEN_ID); 4399 if (extraScreenId >= 0 && nScreens > 1) { 4400 if (page == extraScreenId) { 4401 return getContext().getString(R.string.workspace_new_page); 4402 } 4403 nScreens--; 4404 } 4405 if (nScreens == 0) { 4406 // When the workspace is not loaded, we do not know how many screen will be bound. 4407 return getContext().getString(R.string.all_apps_home_button_label); 4408 } 4409 return getContext().getString(R.string.workspace_scroll_format, 4410 page + 1 - delta, nScreens); 4411 } 4412 4413 @Override 4414 public void fillInLaunchSourceData(View v, ItemInfo info, Target target, Target targetParent) { 4415 target.itemType = LauncherLogProto.APP_ICON; 4416 target.gridX = info.cellX; 4417 target.gridY = info.cellY; 4418 target.pageIndex = getCurrentPage(); 4419 targetParent.containerType = LauncherLogProto.WORKSPACE; 4420 } 4421 4422 /** 4423 * Used as a workaround to ensure that the AppWidgetService receives the 4424 * PACKAGE_ADDED broadcast before updating widgets. 4425 */ 4426 private class DeferredWidgetRefresh implements Runnable { 4427 private final ArrayList<LauncherAppWidgetInfo> mInfos; 4428 private final LauncherAppWidgetHost mHost; 4429 private final Handler mHandler; 4430 4431 private boolean mRefreshPending; 4432 4433 public DeferredWidgetRefresh(ArrayList<LauncherAppWidgetInfo> infos, 4434 LauncherAppWidgetHost host) { 4435 mInfos = infos; 4436 mHost = host; 4437 mHandler = new Handler(); 4438 mRefreshPending = true; 4439 4440 mHost.addProviderChangeListener(this); 4441 // Force refresh after 10 seconds, if we don't get the provider changed event. 4442 // This could happen when the provider is no longer available in the app. 4443 mHandler.postDelayed(this, 10000); 4444 } 4445 4446 @Override 4447 public void run() { 4448 mHost.removeProviderChangeListener(this); 4449 mHandler.removeCallbacks(this); 4450 4451 if (!mRefreshPending) { 4452 return; 4453 } 4454 4455 mRefreshPending = false; 4456 4457 mapOverItems(MAP_NO_RECURSE, new ItemOperator() { 4458 @Override 4459 public boolean evaluate(ItemInfo info, View view) { 4460 if (view instanceof PendingAppWidgetHostView && mInfos.contains(info)) { 4461 PendingAppWidgetHostView hostView = (PendingAppWidgetHostView) view; 4462 mLauncher.removeItem(view, info, false /* deleteFromDb */); 4463 mLauncher.bindAppWidget((LauncherAppWidgetInfo) info); 4464 } 4465 // process all the shortcuts 4466 return false; 4467 } 4468 }); 4469 } 4470 } 4471 4472 public interface OnStateChangeListener { 4473 4474 /** 4475 * Called when the workspace state is changing. 4476 * @param toState final state 4477 * @param targetAnim animation which will be played during the transition or null. 4478 */ 4479 void prepareStateChange(State toState, AnimatorSet targetAnim); 4480 } 4481} 4482