Workspace.java revision ec1b1c542ca0648747b3b0bc3fd45922caa8ddaa
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.AccessibilityDragSource; 63import com.android.launcher3.accessibility.OverviewScreenAccessibilityDelegate; 64import com.android.launcher3.accessibility.WorkspaceAccessibilityHelper; 65import com.android.launcher3.compat.AppWidgetManagerCompat; 66import com.android.launcher3.compat.UserHandleCompat; 67import com.android.launcher3.config.FeatureFlags; 68import com.android.launcher3.config.ProviderConfig; 69import com.android.launcher3.dragndrop.DragController; 70import com.android.launcher3.dragndrop.DragLayer; 71import com.android.launcher3.dragndrop.DragScroller; 72import com.android.launcher3.dragndrop.DragView; 73import com.android.launcher3.dragndrop.SpringLoadedDragController; 74import com.android.launcher3.folder.Folder; 75import com.android.launcher3.folder.FolderIcon; 76import com.android.launcher3.logging.UserEventDispatcher; 77import com.android.launcher3.pageindicators.PageIndicator; 78import com.android.launcher3.userevent.nano.LauncherLogProto; 79import com.android.launcher3.userevent.nano.LauncherLogProto.Target; 80import com.android.launcher3.util.LongArrayMap; 81import com.android.launcher3.util.Thunk; 82import com.android.launcher3.util.WallpaperOffsetInterpolator; 83import com.android.launcher3.widget.PendingAddShortcutInfo; 84import com.android.launcher3.widget.PendingAddWidgetInfo; 85 86import java.util.ArrayList; 87import java.util.HashMap; 88import java.util.HashSet; 89import java.util.concurrent.atomic.AtomicInteger; 90 91/** 92 * The workspace is a wide area with a wallpaper and a finite number of pages. 93 * Each page contains a number of icons, folders or widgets the user can 94 * interact with. A workspace is meant to be used with a fixed width only. 95 */ 96public class Workspace extends PagedView 97 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 98 DragController.DragListener, LauncherTransitionable, ViewGroup.OnHierarchyChangeListener, 99 Insettable, DropTargetSource, AccessibilityDragSource, UserEventDispatcher.LaunchSourceProvider { 100 private static final String TAG = "Launcher.Workspace"; 101 102 private static boolean ENFORCE_DRAG_EVENT_ORDER = false; 103 104 private static final int SNAP_OFF_EMPTY_SCREEN_DURATION = 400; 105 private static final int FADE_EMPTY_SCREEN_DURATION = 150; 106 107 private static final int ADJACENT_SCREEN_DROP_DURATION = 300; 108 109 private static final boolean MAP_NO_RECURSE = false; 110 private static final boolean MAP_RECURSE = true; 111 112 // The screen id used for the empty screen always present to the right. 113 public static final long EXTRA_EMPTY_SCREEN_ID = -201; 114 // The is the first screen. It is always present, even if its empty. 115 public static final long FIRST_SCREEN_ID = 0; 116 117 private final static long CUSTOM_CONTENT_SCREEN_ID = -301; 118 119 private static final long CUSTOM_CONTENT_GESTURE_DELAY = 200; 120 private long mTouchDownTime = -1; 121 private long mCustomContentShowTime = -1; 122 123 private LayoutTransition mLayoutTransition; 124 @Thunk final WallpaperManager mWallpaperManager; 125 126 private ShortcutAndWidgetContainer mDragSourceInternal; 127 128 @Thunk LongArrayMap<CellLayout> mWorkspaceScreens = new LongArrayMap<>(); 129 @Thunk ArrayList<Long> mScreenOrder = new ArrayList<Long>(); 130 131 @Thunk Runnable mRemoveEmptyScreenRunnable; 132 @Thunk boolean mDeferRemoveExtraEmptyScreen = false; 133 @Thunk boolean mAddNewPageOnDrag = true; 134 135 /** 136 * CellInfo for the cell that is currently being dragged 137 */ 138 private CellLayout.CellInfo mDragInfo; 139 140 /** 141 * Target drop area calculated during last acceptDrop call. 142 */ 143 @Thunk int[] mTargetCell = new int[2]; 144 private int mDragOverX = -1; 145 private int mDragOverY = -1; 146 147 CustomContentCallbacks mCustomContentCallbacks; 148 boolean mCustomContentShowing; 149 private float mLastCustomContentScrollProgress = -1f; 150 private String mCustomContentDescription = ""; 151 152 /** 153 * The CellLayout that is currently being dragged over 154 */ 155 @Thunk CellLayout mDragTargetLayout = null; 156 /** 157 * The CellLayout that we will show as highlighted 158 */ 159 private CellLayout mDragOverlappingLayout = null; 160 161 /** 162 * The CellLayout which will be dropped to 163 */ 164 private CellLayout mDropToLayout = null; 165 166 @Thunk Launcher mLauncher; 167 @Thunk IconCache mIconCache; 168 @Thunk DragController mDragController; 169 170 // These are temporary variables to prevent having to allocate a new object just to 171 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 172 private static final Rect sTempRect = new Rect(); 173 private final int[] mTempXY = new int[2]; 174 @Thunk float[] mDragViewVisualCenter = new float[2]; 175 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 176 private int[] mTempVisiblePagesRange = new int[2]; 177 private Matrix mTempMatrix = new Matrix(); 178 179 private SpringLoadedDragController mSpringLoadedDragController; 180 private float mOverviewModeShrinkFactor; 181 182 // State variable that indicates whether the pages are small (ie when you're 183 // in all apps or customize mode) 184 185 public enum State { 186 NORMAL (false, false), 187 NORMAL_HIDDEN (false, false), 188 SPRING_LOADED (false, true), 189 OVERVIEW (true, true), 190 OVERVIEW_HIDDEN (true, false); 191 192 public final boolean shouldUpdateWidget; 193 public final boolean hasMultipleVisiblePages; 194 195 State(boolean shouldUpdateWidget, boolean hasMultipleVisiblePages) { 196 this.shouldUpdateWidget = shouldUpdateWidget; 197 this.hasMultipleVisiblePages = hasMultipleVisiblePages; 198 } 199 } 200 201 // Direction used for moving the workspace and hotseat UI 202 public enum Direction { 203 X (TRANSLATION_X), 204 Y (TRANSLATION_Y); 205 206 private final Property<View, Float> viewProperty; 207 208 Direction(Property<View, Float> viewProperty) { 209 this.viewProperty = viewProperty; 210 } 211 } 212 213 private float[] mPageAlpha = new float[] {1, 1}; 214 private float[] mHotseatAlpha = new float[] {1, 1}; 215 216 @ViewDebug.ExportedProperty(category = "launcher") 217 private State mState = State.NORMAL; 218 private boolean mIsSwitchingState = false; 219 220 boolean mAnimatingViewIntoPlace = false; 221 boolean mChildrenLayersEnabled = true; 222 223 private boolean mStripScreensOnPageStopMoving = false; 224 225 /** Is the user is dragging an item near the edge of a page? */ 226 private boolean mInScrollArea = false; 227 228 private HolographicOutlineHelper mOutlineHelper; 229 @Thunk Bitmap mDragOutline = null; 230 public static final int DRAG_BITMAP_PADDING = 2; 231 private boolean mWorkspaceFadeInAdjacentScreens; 232 233 final WallpaperOffsetInterpolator mWallpaperOffset; 234 235 @Thunk Runnable mDelayedResizeRunnable; 236 private Runnable mDelayedSnapToPageRunnable; 237 238 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 239 private static final int FOLDER_CREATION_TIMEOUT = 0; 240 public static final int REORDER_TIMEOUT = 350; 241 private final Alarm mFolderCreationAlarm = new Alarm(); 242 private final Alarm mReorderAlarm = new Alarm(); 243 private FolderIcon.PreviewBackground mFolderCreateBg; 244 private FolderIcon mDragOverFolderIcon = null; 245 private boolean mCreateUserFolderOnDrop = false; 246 private boolean mAddToExistingFolderOnDrop = false; 247 private float mMaxDistanceForFolderCreation; 248 249 private final Canvas mCanvas = new Canvas(); 250 251 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 252 private float mXDown; 253 private float mYDown; 254 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 255 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 256 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 257 258 // Relating to the animation of items being dropped externally 259 public static final int ANIMATE_INTO_POSITION_AND_DISAPPEAR = 0; 260 public static final int ANIMATE_INTO_POSITION_AND_REMAIN = 1; 261 public static final int ANIMATE_INTO_POSITION_AND_RESIZE = 2; 262 public static final int COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION = 3; 263 public static final int CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION = 4; 264 265 // Related to dragging, folder creation and reordering 266 private static final int DRAG_MODE_NONE = 0; 267 private static final int DRAG_MODE_CREATE_FOLDER = 1; 268 private static final int DRAG_MODE_ADD_TO_FOLDER = 2; 269 private static final int DRAG_MODE_REORDER = 3; 270 private int mDragMode = DRAG_MODE_NONE; 271 @Thunk int mLastReorderX = -1; 272 @Thunk int mLastReorderY = -1; 273 274 private SparseArray<Parcelable> mSavedStates; 275 private final ArrayList<Integer> mRestoredPages = new ArrayList<Integer>(); 276 277 private float mCurrentScale; 278 private float mTransitionProgress; 279 280 @Thunk Runnable mDeferredAction; 281 private boolean mDeferDropAfterUninstall; 282 private boolean mUninstallSuccessful; 283 284 // State related to Launcher Overlay 285 LauncherOverlay mLauncherOverlay; 286 boolean mScrollInteractionBegan; 287 boolean mStartedSendingScrollEvents; 288 float mLastOverlaySroll = 0; 289 // Total over scrollX in the overlay direction. 290 private int mUnboundedScrollX; 291 private boolean mForceDrawAdjacentPages = false; 292 // Total over scrollX in the overlay direction. 293 private float mOverlayTranslation; 294 295 // Handles workspace state transitions 296 private WorkspaceStateTransitionAnimation mStateTransitionAnimation; 297 298 private AccessibilityDelegate mPagesAccessibilityDelegate; 299 private OnStateChangeListener mOnStateChangeListener; 300 301 /** 302 * Used to inflate the Workspace from XML. 303 * 304 * @param context The application's context. 305 * @param attrs The attributes set containing the Workspace's customization values. 306 */ 307 public Workspace(Context context, AttributeSet attrs) { 308 this(context, attrs, 0); 309 } 310 311 /** 312 * Used to inflate the Workspace from XML. 313 * 314 * @param context The application's context. 315 * @param attrs The attributes set containing the Workspace's customization values. 316 * @param defStyle Unused. 317 */ 318 public Workspace(Context context, AttributeSet attrs, int defStyle) { 319 super(context, attrs, defStyle); 320 321 mOutlineHelper = HolographicOutlineHelper.obtain(context); 322 323 mLauncher = (Launcher) context; 324 mStateTransitionAnimation = new WorkspaceStateTransitionAnimation(mLauncher, this); 325 final Resources res = getResources(); 326 DeviceProfile grid = mLauncher.getDeviceProfile(); 327 mWorkspaceFadeInAdjacentScreens = grid.shouldFadeAdjacentWorkspaceScreens(); 328 mFadeInAdjacentScreens = false; 329 mWallpaperManager = WallpaperManager.getInstance(context); 330 331 mWallpaperOffset = new WallpaperOffsetInterpolator(this); 332 mOverviewModeShrinkFactor = 333 res.getInteger(R.integer.config_workspaceOverviewShrinkPercentage) / 100f; 334 335 setOnHierarchyChangeListener(this); 336 setHapticFeedbackEnabled(false); 337 338 initWorkspace(); 339 340 // Disable multitouch across the workspace/all apps/customize tray 341 setMotionEventSplittingEnabled(true); 342 } 343 344 @Override 345 public void setInsets(Rect insets) { 346 mInsets.set(insets); 347 348 CellLayout customScreen = getScreenWithId(CUSTOM_CONTENT_SCREEN_ID); 349 if (customScreen != null) { 350 View customContent = customScreen.getShortcutsAndWidgets().getChildAt(0); 351 if (customContent instanceof Insettable) { 352 ((Insettable) customContent).setInsets(mInsets); 353 } 354 } 355 } 356 357 public void setOnStateChangeListener(OnStateChangeListener listener) { 358 mOnStateChangeListener = listener; 359 } 360 361 // estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each 362 // dimension if unsuccessful 363 public int[] estimateItemSize(ItemInfo itemInfo, boolean springLoaded) { 364 float shrinkFactor = mLauncher.getDeviceProfile().workspaceSpringLoadShrinkFactor; 365 int[] size = new int[2]; 366 if (getChildCount() > 0) { 367 // Use the first non-custom page to estimate the child position 368 CellLayout cl = (CellLayout) getChildAt(numCustomPages()); 369 Rect r = estimateItemPosition(cl, 0, 0, itemInfo.spanX, itemInfo.spanY); 370 size[0] = r.width(); 371 size[1] = r.height(); 372 if (springLoaded) { 373 size[0] *= shrinkFactor; 374 size[1] *= shrinkFactor; 375 } 376 return size; 377 } else { 378 size[0] = Integer.MAX_VALUE; 379 size[1] = Integer.MAX_VALUE; 380 return size; 381 } 382 } 383 384 public Rect estimateItemPosition(CellLayout cl, int hCell, int vCell, int hSpan, int vSpan) { 385 Rect r = new Rect(); 386 cl.cellToRect(hCell, vCell, hSpan, vSpan, r); 387 return r; 388 } 389 390 @Override 391 public void onDragStart(final DragSource source, ItemInfo info, int dragAction) { 392 if (ENFORCE_DRAG_EVENT_ORDER) { 393 enfoceDragParity("onDragStart", 0, 0); 394 } 395 396 updateChildrenLayersEnabled(false); 397 mLauncher.lockScreenOrientation(); 398 mLauncher.onInteractionBegin(); 399 // Prevent any Un/InstallShortcutReceivers from updating the db while we are dragging 400 InstallShortcutReceiver.enableInstallQueue(); 401 402 if (mAddNewPageOnDrag) { 403 mDeferRemoveExtraEmptyScreen = false; 404 addExtraEmptyScreenOnDrag(); 405 } 406 } 407 408 public void setAddNewPageOnDrag(boolean addPage) { 409 mAddNewPageOnDrag = addPage; 410 } 411 412 public void deferRemoveExtraEmptyScreen() { 413 mDeferRemoveExtraEmptyScreen = true; 414 } 415 416 @Override 417 public void onDragEnd() { 418 if (ENFORCE_DRAG_EVENT_ORDER) { 419 enfoceDragParity("onDragEnd", 0, 0); 420 } 421 422 if (!mDeferRemoveExtraEmptyScreen) { 423 removeExtraEmptyScreen(true, mDragSourceInternal != null); 424 } 425 426 updateChildrenLayersEnabled(false); 427 mLauncher.unlockScreenOrientation(false); 428 429 // Re-enable any Un/InstallShortcutReceiver and now process any queued items 430 InstallShortcutReceiver.disableAndFlushInstallQueue(getContext()); 431 432 mDragSourceInternal = null; 433 mLauncher.onInteractionEnd(); 434 } 435 436 /** 437 * Initializes various states for this workspace. 438 */ 439 protected void initWorkspace() { 440 mCurrentPage = getDefaultPage(); 441 LauncherAppState app = LauncherAppState.getInstance(); 442 DeviceProfile grid = mLauncher.getDeviceProfile(); 443 mIconCache = app.getIconCache(); 444 setWillNotDraw(false); 445 setClipChildren(false); 446 setClipToPadding(false); 447 setChildrenDrawnWithCacheEnabled(true); 448 449 setMinScale(mOverviewModeShrinkFactor); 450 setupLayoutTransition(); 451 452 mMaxDistanceForFolderCreation = (0.55f * grid.iconSizePx); 453 454 // Set the wallpaper dimensions when Launcher starts up 455 setWallpaperDimension(); 456 457 setEdgeGlowColor(getResources().getColor(R.color.workspace_edge_effect_color)); 458 } 459 460 private int getDefaultPage() { 461 return numCustomPages(); 462 } 463 464 private void setupLayoutTransition() { 465 // We want to show layout transitions when pages are deleted, to close the gap. 466 mLayoutTransition = new LayoutTransition(); 467 mLayoutTransition.enableTransitionType(LayoutTransition.DISAPPEARING); 468 mLayoutTransition.enableTransitionType(LayoutTransition.CHANGE_DISAPPEARING); 469 mLayoutTransition.disableTransitionType(LayoutTransition.APPEARING); 470 mLayoutTransition.disableTransitionType(LayoutTransition.CHANGE_APPEARING); 471 setLayoutTransition(mLayoutTransition); 472 } 473 474 void enableLayoutTransitions() { 475 setLayoutTransition(mLayoutTransition); 476 } 477 void disableLayoutTransitions() { 478 setLayoutTransition(null); 479 } 480 481 @Override 482 public void onChildViewAdded(View parent, View child) { 483 if (!(child instanceof CellLayout)) { 484 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 485 } 486 CellLayout cl = ((CellLayout) child); 487 cl.setOnInterceptTouchListener(this); 488 cl.setClickable(true); 489 cl.setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_NO); 490 super.onChildViewAdded(parent, child); 491 } 492 493 protected boolean shouldDrawChild(View child) { 494 final CellLayout cl = (CellLayout) child; 495 return super.shouldDrawChild(child) && 496 (mIsSwitchingState || 497 cl.getShortcutsAndWidgets().getAlpha() > 0 || 498 cl.getBackgroundAlpha() > 0); 499 } 500 501 /** 502 * @return The open folder on the current screen, or null if there is none 503 */ 504 public Folder getOpenFolder() { 505 DragLayer dragLayer = mLauncher.getDragLayer(); 506 int count = dragLayer.getChildCount(); 507 for (int i = 0; i < count; i++) { 508 View child = dragLayer.getChildAt(i); 509 if (child instanceof Folder) { 510 Folder folder = (Folder) child; 511 if (folder.getInfo().opened) 512 return folder; 513 } 514 } 515 return null; 516 } 517 518 boolean isTouchActive() { 519 return mTouchState != TOUCH_STATE_REST; 520 } 521 522 /** 523 * Initializes and binds the first page 524 * @param qsb an exisitng qsb to recycle or null. 525 */ 526 public void bindAndInitFirstWorkspaceScreen(View qsb) { 527 if (!FeatureFlags.QSB_ON_FIRST_SCREEN) { 528 return; 529 } 530 // Add the first page 531 CellLayout firstPage = insertNewWorkspaceScreen(Workspace.FIRST_SCREEN_ID, 0); 532 533 if (!mIsRtl || !mLauncher.getDeviceProfile().isVerticalBarLayout()) { 534 // Let the cell layout extend the start padding. 535 ((LayoutParams) firstPage.getLayoutParams()).matchStartEdge = true; 536 firstPage.setPaddingRelative(getPaddingStart(), 0, 0, 0); 537 } 538 539 if (qsb == null) { 540 // Always add a QSB on the first screen. 541 qsb = mLauncher.getLayoutInflater().inflate(R.layout.qsb_container, 542 firstPage, false); 543 } 544 545 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) qsb.getLayoutParams(); 546 lp.cellX = 0; 547 lp.cellY = 0; 548 lp.cellHSpan = firstPage.getCountX(); 549 lp.cellVSpan = 1; 550 lp.canReorder = false; 551 552 if (!firstPage.addViewToCellLayout(qsb, 0, R.id.qsb_container, lp, true)) { 553 Log.e(TAG, "Failed to add to item at (0, 0) to CellLayout"); 554 } 555 } 556 557 public void removeAllWorkspaceScreens() { 558 // Disable all layout transitions before removing all pages to ensure that we don't get the 559 // transition animations competing with us changing the scroll when we add pages or the 560 // custom content screen 561 disableLayoutTransitions(); 562 563 // Since we increment the current page when we call addCustomContentPage via bindScreens 564 // (and other places), we need to adjust the current page back when we clear the pages 565 if (hasCustomContent()) { 566 removeCustomContentPage(); 567 } 568 569 // Recycle the QSB widget 570 View qsb = findViewById(R.id.qsb_container); 571 if (qsb != null) { 572 ((ViewGroup) qsb.getParent()).removeView(qsb); 573 } 574 575 // Remove the pages and clear the screen models 576 removeAllViews(); 577 mScreenOrder.clear(); 578 mWorkspaceScreens.clear(); 579 580 // Ensure that the first page is always present 581 bindAndInitFirstWorkspaceScreen(qsb); 582 583 // Re-enable the layout transitions 584 enableLayoutTransitions(); 585 } 586 587 public void insertNewWorkspaceScreenBeforeEmptyScreen(long screenId) { 588 // Find the index to insert this view into. If the empty screen exists, then 589 // insert it before that. 590 int insertIndex = mScreenOrder.indexOf(EXTRA_EMPTY_SCREEN_ID); 591 if (insertIndex < 0) { 592 insertIndex = mScreenOrder.size(); 593 } 594 insertNewWorkspaceScreen(screenId, insertIndex); 595 } 596 597 public void insertNewWorkspaceScreen(long screenId) { 598 insertNewWorkspaceScreen(screenId, getChildCount()); 599 } 600 601 public CellLayout insertNewWorkspaceScreen(long screenId, int insertIndex) { 602 if (mWorkspaceScreens.containsKey(screenId)) { 603 throw new RuntimeException("Screen id " + screenId + " already exists!"); 604 } 605 606 // Inflate the cell layout, but do not add it automatically so that we can get the newly 607 // created CellLayout. 608 CellLayout newScreen = (CellLayout) mLauncher.getLayoutInflater().inflate( 609 R.layout.workspace_screen, this, false /* attachToRoot */); 610 611 newScreen.setOnLongClickListener(mLongClickListener); 612 newScreen.setOnClickListener(mLauncher); 613 newScreen.setSoundEffectsEnabled(false); 614 mWorkspaceScreens.put(screenId, newScreen); 615 mScreenOrder.add(insertIndex, screenId); 616 addView(newScreen, insertIndex); 617 618 if (mLauncher.getAccessibilityDelegate().isInAccessibleDrag()) { 619 newScreen.enableAccessibleDrag(true, CellLayout.WORKSPACE_ACCESSIBILITY_DRAG); 620 } 621 622 return newScreen; 623 } 624 625 public void createCustomContentContainer() { 626 CellLayout customScreen = (CellLayout) 627 mLauncher.getLayoutInflater().inflate(R.layout.workspace_screen, this, false); 628 customScreen.disableDragTarget(); 629 customScreen.disableJailContent(); 630 631 mWorkspaceScreens.put(CUSTOM_CONTENT_SCREEN_ID, customScreen); 632 mScreenOrder.add(0, CUSTOM_CONTENT_SCREEN_ID); 633 634 // We want no padding on the custom content 635 customScreen.setPadding(0, 0, 0, 0); 636 637 addFullScreenPage(customScreen); 638 639 // Update the custom content hint 640 if (mRestorePage != INVALID_RESTORE_PAGE) { 641 mRestorePage = mRestorePage + 1; 642 } else { 643 setCurrentPage(getCurrentPage() + 1); 644 } 645 } 646 647 public void removeCustomContentPage() { 648 CellLayout customScreen = getScreenWithId(CUSTOM_CONTENT_SCREEN_ID); 649 if (customScreen == null) { 650 throw new RuntimeException("Expected custom content screen to exist"); 651 } 652 653 mWorkspaceScreens.remove(CUSTOM_CONTENT_SCREEN_ID); 654 mScreenOrder.remove(CUSTOM_CONTENT_SCREEN_ID); 655 removeView(customScreen); 656 657 if (mCustomContentCallbacks != null) { 658 mCustomContentCallbacks.onScrollProgressChanged(0); 659 mCustomContentCallbacks.onHide(); 660 } 661 662 mCustomContentCallbacks = null; 663 664 // Update the custom content hint 665 if (mRestorePage != INVALID_RESTORE_PAGE) { 666 mRestorePage = mRestorePage - 1; 667 } else { 668 setCurrentPage(getCurrentPage() - 1); 669 } 670 } 671 672 public void addToCustomContentPage(View customContent, CustomContentCallbacks callbacks, 673 String description) { 674 if (getPageIndexForScreenId(CUSTOM_CONTENT_SCREEN_ID) < 0) { 675 throw new RuntimeException("Expected custom content screen to exist"); 676 } 677 678 // Add the custom content to the full screen custom page 679 CellLayout customScreen = getScreenWithId(CUSTOM_CONTENT_SCREEN_ID); 680 int spanX = customScreen.getCountX(); 681 int spanY = customScreen.getCountY(); 682 CellLayout.LayoutParams lp = new CellLayout.LayoutParams(0, 0, spanX, spanY); 683 lp.canReorder = false; 684 lp.isFullscreen = true; 685 if (customContent instanceof Insettable) { 686 ((Insettable)customContent).setInsets(mInsets); 687 } 688 689 // Verify that the child is removed from any existing parent. 690 if (customContent.getParent() instanceof ViewGroup) { 691 ViewGroup parent = (ViewGroup) customContent.getParent(); 692 parent.removeView(customContent); 693 } 694 customScreen.removeAllViews(); 695 customContent.setFocusable(true); 696 customContent.setOnKeyListener(new FullscreenKeyEventListener()); 697 customContent.setOnFocusChangeListener(mLauncher.mFocusHandler 698 .getHideIndicatorOnFocusListener()); 699 customScreen.addViewToCellLayout(customContent, 0, 0, lp, true); 700 mCustomContentDescription = description; 701 702 mCustomContentCallbacks = callbacks; 703 } 704 705 public void addExtraEmptyScreenOnDrag() { 706 boolean lastChildOnScreen = false; 707 boolean childOnFinalScreen = false; 708 709 // Cancel any pending removal of empty screen 710 mRemoveEmptyScreenRunnable = null; 711 712 if (mDragSourceInternal != null) { 713 if (mDragSourceInternal.getChildCount() == 1) { 714 lastChildOnScreen = true; 715 } 716 CellLayout cl = (CellLayout) mDragSourceInternal.getParent(); 717 if (indexOfChild(cl) == getChildCount() - 1) { 718 childOnFinalScreen = true; 719 } 720 } 721 722 // If this is the last item on the final screen 723 if (lastChildOnScreen && childOnFinalScreen) { 724 return; 725 } 726 if (!mWorkspaceScreens.containsKey(EXTRA_EMPTY_SCREEN_ID)) { 727 insertNewWorkspaceScreen(EXTRA_EMPTY_SCREEN_ID); 728 } 729 } 730 731 public boolean addExtraEmptyScreen() { 732 if (!mWorkspaceScreens.containsKey(EXTRA_EMPTY_SCREEN_ID)) { 733 insertNewWorkspaceScreen(EXTRA_EMPTY_SCREEN_ID); 734 return true; 735 } 736 return false; 737 } 738 739 private void convertFinalScreenToEmptyScreenIfNecessary() { 740 if (mLauncher.isWorkspaceLoading()) { 741 // Invalid and dangerous operation if workspace is loading 742 return; 743 } 744 745 if (hasExtraEmptyScreen() || mScreenOrder.size() == 0) return; 746 long finalScreenId = mScreenOrder.get(mScreenOrder.size() - 1); 747 748 if (finalScreenId == CUSTOM_CONTENT_SCREEN_ID) return; 749 CellLayout finalScreen = mWorkspaceScreens.get(finalScreenId); 750 751 // If the final screen is empty, convert it to the extra empty screen 752 if (finalScreen.getShortcutsAndWidgets().getChildCount() == 0 && 753 !finalScreen.isDropPending()) { 754 mWorkspaceScreens.remove(finalScreenId); 755 mScreenOrder.remove(finalScreenId); 756 757 // if this is the last non-custom content screen, convert it to the empty screen 758 mWorkspaceScreens.put(EXTRA_EMPTY_SCREEN_ID, finalScreen); 759 mScreenOrder.add(EXTRA_EMPTY_SCREEN_ID); 760 761 // Update the model if we have changed any screens 762 mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); 763 } 764 } 765 766 public void removeExtraEmptyScreen(final boolean animate, boolean stripEmptyScreens) { 767 removeExtraEmptyScreenDelayed(animate, null, 0, stripEmptyScreens); 768 } 769 770 public void removeExtraEmptyScreenDelayed(final boolean animate, final Runnable onComplete, 771 final int delay, final boolean stripEmptyScreens) { 772 if (mLauncher.isWorkspaceLoading()) { 773 // Don't strip empty screens if the workspace is still loading 774 return; 775 } 776 777 if (delay > 0) { 778 postDelayed(new Runnable() { 779 @Override 780 public void run() { 781 removeExtraEmptyScreenDelayed(animate, onComplete, 0, stripEmptyScreens); 782 } 783 }, delay); 784 return; 785 } 786 787 convertFinalScreenToEmptyScreenIfNecessary(); 788 if (hasExtraEmptyScreen()) { 789 int emptyIndex = mScreenOrder.indexOf(EXTRA_EMPTY_SCREEN_ID); 790 if (getNextPage() == emptyIndex) { 791 snapToPage(getNextPage() - 1, SNAP_OFF_EMPTY_SCREEN_DURATION); 792 fadeAndRemoveEmptyScreen(SNAP_OFF_EMPTY_SCREEN_DURATION, FADE_EMPTY_SCREEN_DURATION, 793 onComplete, stripEmptyScreens); 794 } else { 795 snapToPage(getNextPage(), 0); 796 fadeAndRemoveEmptyScreen(0, FADE_EMPTY_SCREEN_DURATION, 797 onComplete, stripEmptyScreens); 798 } 799 return; 800 } else if (stripEmptyScreens) { 801 // If we're not going to strip the empty screens after removing 802 // the extra empty screen, do it right away. 803 stripEmptyScreens(); 804 } 805 806 if (onComplete != null) { 807 onComplete.run(); 808 } 809 } 810 811 private void fadeAndRemoveEmptyScreen(int delay, int duration, final Runnable onComplete, 812 final boolean stripEmptyScreens) { 813 // XXX: Do we need to update LM workspace screens below? 814 PropertyValuesHolder alpha = PropertyValuesHolder.ofFloat("alpha", 0f); 815 PropertyValuesHolder bgAlpha = PropertyValuesHolder.ofFloat("backgroundAlpha", 0f); 816 817 final CellLayout cl = mWorkspaceScreens.get(EXTRA_EMPTY_SCREEN_ID); 818 819 mRemoveEmptyScreenRunnable = new Runnable() { 820 @Override 821 public void run() { 822 if (hasExtraEmptyScreen()) { 823 mWorkspaceScreens.remove(EXTRA_EMPTY_SCREEN_ID); 824 mScreenOrder.remove(EXTRA_EMPTY_SCREEN_ID); 825 removeView(cl); 826 if (stripEmptyScreens) { 827 stripEmptyScreens(); 828 } 829 // Update the page indicator to reflect the removed page. 830 showPageIndicatorAtCurrentScroll(); 831 } 832 } 833 }; 834 835 ObjectAnimator oa = ObjectAnimator.ofPropertyValuesHolder(cl, alpha, bgAlpha); 836 oa.setDuration(duration); 837 oa.setStartDelay(delay); 838 oa.addListener(new AnimatorListenerAdapter() { 839 @Override 840 public void onAnimationEnd(Animator animation) { 841 if (mRemoveEmptyScreenRunnable != null) { 842 mRemoveEmptyScreenRunnable.run(); 843 } 844 if (onComplete != null) { 845 onComplete.run(); 846 } 847 } 848 }); 849 oa.start(); 850 } 851 852 public boolean hasExtraEmptyScreen() { 853 int nScreens = getChildCount(); 854 nScreens = nScreens - numCustomPages(); 855 return mWorkspaceScreens.containsKey(EXTRA_EMPTY_SCREEN_ID) && nScreens > 1; 856 } 857 858 public long commitExtraEmptyScreen() { 859 if (mLauncher.isWorkspaceLoading()) { 860 // Invalid and dangerous operation if workspace is loading 861 return -1; 862 } 863 864 int index = getPageIndexForScreenId(EXTRA_EMPTY_SCREEN_ID); 865 CellLayout cl = mWorkspaceScreens.get(EXTRA_EMPTY_SCREEN_ID); 866 mWorkspaceScreens.remove(EXTRA_EMPTY_SCREEN_ID); 867 mScreenOrder.remove(EXTRA_EMPTY_SCREEN_ID); 868 869 long newId = LauncherSettings.Settings.call(getContext().getContentResolver(), 870 LauncherSettings.Settings.METHOD_NEW_SCREEN_ID) 871 .getLong(LauncherSettings.Settings.EXTRA_VALUE); 872 mWorkspaceScreens.put(newId, cl); 873 mScreenOrder.add(newId); 874 875 // Update the model for the new screen 876 mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); 877 878 return newId; 879 } 880 881 public CellLayout getScreenWithId(long screenId) { 882 return mWorkspaceScreens.get(screenId); 883 } 884 885 public long getIdForScreen(CellLayout layout) { 886 int index = mWorkspaceScreens.indexOfValue(layout); 887 if (index != -1) { 888 return mWorkspaceScreens.keyAt(index); 889 } 890 return -1; 891 } 892 893 public int getPageIndexForScreenId(long screenId) { 894 return indexOfChild(mWorkspaceScreens.get(screenId)); 895 } 896 897 public long getScreenIdForPageIndex(int index) { 898 if (0 <= index && index < mScreenOrder.size()) { 899 return mScreenOrder.get(index); 900 } 901 return -1; 902 } 903 904 public ArrayList<Long> getScreenOrder() { 905 return mScreenOrder; 906 } 907 908 public void stripEmptyScreens() { 909 if (mLauncher.isWorkspaceLoading()) { 910 // Don't strip empty screens if the workspace is still loading. 911 // This is dangerous and can result in data loss. 912 return; 913 } 914 915 if (isPageMoving()) { 916 mStripScreensOnPageStopMoving = true; 917 return; 918 } 919 920 int currentPage = getNextPage(); 921 ArrayList<Long> removeScreens = new ArrayList<Long>(); 922 int total = mWorkspaceScreens.size(); 923 for (int i = 0; i < total; i++) { 924 long id = mWorkspaceScreens.keyAt(i); 925 CellLayout cl = mWorkspaceScreens.valueAt(i); 926 // FIRST_SCREEN_ID can never be removed. 927 if ((!FeatureFlags.QSB_ON_FIRST_SCREEN || id > FIRST_SCREEN_ID) 928 && cl.getShortcutsAndWidgets().getChildCount() == 0) { 929 removeScreens.add(id); 930 } 931 } 932 933 boolean isInAccessibleDrag = mLauncher.getAccessibilityDelegate().isInAccessibleDrag(); 934 935 // We enforce at least one page to add new items to. In the case that we remove the last 936 // such screen, we convert the last screen to the empty screen 937 int minScreens = 1 + numCustomPages(); 938 939 int pageShift = 0; 940 for (Long id: removeScreens) { 941 CellLayout cl = mWorkspaceScreens.get(id); 942 mWorkspaceScreens.remove(id); 943 mScreenOrder.remove(id); 944 945 if (getChildCount() > minScreens) { 946 if (indexOfChild(cl) < currentPage) { 947 pageShift++; 948 } 949 950 if (isInAccessibleDrag) { 951 cl.enableAccessibleDrag(false, CellLayout.WORKSPACE_ACCESSIBILITY_DRAG); 952 } 953 954 removeView(cl); 955 } else { 956 // if this is the last non-custom content screen, convert it to the empty screen 957 mRemoveEmptyScreenRunnable = null; 958 mWorkspaceScreens.put(EXTRA_EMPTY_SCREEN_ID, cl); 959 mScreenOrder.add(EXTRA_EMPTY_SCREEN_ID); 960 } 961 } 962 963 if (!removeScreens.isEmpty()) { 964 // Update the model if we have changed any screens 965 mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); 966 } 967 968 if (pageShift >= 0) { 969 setCurrentPage(currentPage - pageShift); 970 } 971 } 972 973 // See implementation for parameter definition. 974 void addInScreen(View child, long container, long screenId, 975 int x, int y, int spanX, int spanY) { 976 addInScreen(child, container, screenId, x, y, spanX, spanY, false, false); 977 } 978 979 // At bind time, we use the rank (screenId) to compute x and y for hotseat items. 980 // See implementation for parameter definition. 981 public void addInScreenFromBind(View child, long container, long screenId, int x, int y, 982 int spanX, int spanY) { 983 addInScreen(child, container, screenId, x, y, spanX, spanY, false, true); 984 } 985 986 // See implementation for parameter definition. 987 void addInScreen(View child, long container, long screenId, int x, int y, int spanX, int spanY, 988 boolean insert) { 989 addInScreen(child, container, screenId, x, y, spanX, spanY, insert, false); 990 } 991 992 /** 993 * Adds the specified child in the specified screen. The position and dimension of 994 * the child are defined by x, y, spanX and spanY. 995 * 996 * @param child The child to add in one of the workspace's screens. 997 * @param screenId The screen in which to add the child. 998 * @param x The X position of the child in the screen's grid. 999 * @param y The Y position of the child in the screen's grid. 1000 * @param spanX The number of cells spanned horizontally by the child. 1001 * @param spanY The number of cells spanned vertically by the child. 1002 * @param insert When true, the child is inserted at the beginning of the children list. 1003 * @param computeXYFromRank When true, we use the rank (stored in screenId) to compute 1004 * the x and y position in which to place hotseat items. Otherwise 1005 * we use the x and y position to compute the rank. 1006 */ 1007 void addInScreen(View child, long container, long screenId, int x, int y, int spanX, int spanY, 1008 boolean insert, boolean computeXYFromRank) { 1009 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 1010 if (getScreenWithId(screenId) == null) { 1011 Log.e(TAG, "Skipping child, screenId " + screenId + " not found"); 1012 // DEBUGGING - Print out the stack trace to see where we are adding from 1013 new Throwable().printStackTrace(); 1014 return; 1015 } 1016 } 1017 if (screenId == EXTRA_EMPTY_SCREEN_ID) { 1018 // This should never happen 1019 throw new RuntimeException("Screen id should not be EXTRA_EMPTY_SCREEN_ID"); 1020 } 1021 1022 final CellLayout layout; 1023 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 1024 layout = mLauncher.getHotseat().getLayout(); 1025 child.setOnKeyListener(new HotseatIconKeyEventListener()); 1026 1027 // Hide folder title in the hotseat 1028 if (child instanceof FolderIcon) { 1029 ((FolderIcon) child).setTextVisible(false); 1030 } 1031 1032 if (computeXYFromRank) { 1033 x = mLauncher.getHotseat().getCellXFromOrder((int) screenId); 1034 y = mLauncher.getHotseat().getCellYFromOrder((int) screenId); 1035 } else { 1036 screenId = mLauncher.getHotseat().getOrderInHotseat(x, y); 1037 } 1038 } else { 1039 // Show folder title if not in the hotseat 1040 if (child instanceof FolderIcon) { 1041 ((FolderIcon) child).setTextVisible(true); 1042 } 1043 layout = getScreenWithId(screenId); 1044 child.setOnKeyListener(new IconKeyEventListener()); 1045 } 1046 1047 ViewGroup.LayoutParams genericLp = child.getLayoutParams(); 1048 CellLayout.LayoutParams lp; 1049 if (genericLp == null || !(genericLp instanceof CellLayout.LayoutParams)) { 1050 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 1051 } else { 1052 lp = (CellLayout.LayoutParams) genericLp; 1053 lp.cellX = x; 1054 lp.cellY = y; 1055 lp.cellHSpan = spanX; 1056 lp.cellVSpan = spanY; 1057 } 1058 1059 if (spanX < 0 && spanY < 0) { 1060 lp.isLockedToGrid = false; 1061 } 1062 1063 // Get the canonical child id to uniquely represent this view in this screen 1064 ItemInfo info = (ItemInfo) child.getTag(); 1065 int childId = mLauncher.getViewIdForItem(info); 1066 1067 boolean markCellsAsOccupied = !(child instanceof Folder); 1068 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 1069 // TODO: This branch occurs when the workspace is adding views 1070 // outside of the defined grid 1071 // maybe we should be deleting these items from the LauncherModel? 1072 Log.e(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 1073 } 1074 1075 if (!(child instanceof Folder)) { 1076 child.setHapticFeedbackEnabled(false); 1077 child.setOnLongClickListener(mLongClickListener); 1078 } 1079 if (child instanceof DropTarget) { 1080 mDragController.addDropTarget((DropTarget) child); 1081 } 1082 } 1083 1084 /** 1085 * Called directly from a CellLayout (not by the framework), after we've been added as a 1086 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 1087 * that it should intercept touch events, which is not something that is normally supported. 1088 */ 1089 @SuppressLint("ClickableViewAccessibility") 1090 @Override 1091 public boolean onTouch(View v, MotionEvent event) { 1092 return (workspaceInModalState() || !isFinishedSwitchingState()) 1093 || (!workspaceInModalState() && indexOfChild(v) != mCurrentPage); 1094 } 1095 1096 public boolean isSwitchingState() { 1097 return mIsSwitchingState; 1098 } 1099 1100 /** This differs from isSwitchingState in that we take into account how far the transition 1101 * has completed. */ 1102 public boolean isFinishedSwitchingState() { 1103 return !mIsSwitchingState || (mTransitionProgress > 0.5f); 1104 } 1105 1106 protected void onWindowVisibilityChanged (int visibility) { 1107 mLauncher.onWindowVisibilityChanged(visibility); 1108 } 1109 1110 @Override 1111 public boolean dispatchUnhandledMove(View focused, int direction) { 1112 if (workspaceInModalState() || !isFinishedSwitchingState()) { 1113 // when the home screens are shrunken, shouldn't allow side-scrolling 1114 return false; 1115 } 1116 return super.dispatchUnhandledMove(focused, direction); 1117 } 1118 1119 @Override 1120 public boolean onInterceptTouchEvent(MotionEvent ev) { 1121 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 1122 case MotionEvent.ACTION_DOWN: 1123 mXDown = ev.getX(); 1124 mYDown = ev.getY(); 1125 mTouchDownTime = System.currentTimeMillis(); 1126 break; 1127 case MotionEvent.ACTION_POINTER_UP: 1128 case MotionEvent.ACTION_UP: 1129 if (mTouchState == TOUCH_STATE_REST) { 1130 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 1131 if (currentPage != null) { 1132 onWallpaperTap(ev); 1133 } 1134 } 1135 } 1136 return super.onInterceptTouchEvent(ev); 1137 } 1138 1139 @Override 1140 public boolean onGenericMotionEvent(MotionEvent event) { 1141 // Ignore pointer scroll events if the custom content doesn't allow scrolling. 1142 if ((getScreenIdForPageIndex(getCurrentPage()) == CUSTOM_CONTENT_SCREEN_ID) 1143 && (mCustomContentCallbacks != null) 1144 && !mCustomContentCallbacks.isScrollingAllowed()) { 1145 return false; 1146 } 1147 return super.onGenericMotionEvent(event); 1148 } 1149 1150 protected void reinflateWidgetsIfNecessary() { 1151 final int clCount = getChildCount(); 1152 for (int i = 0; i < clCount; i++) { 1153 CellLayout cl = (CellLayout) getChildAt(i); 1154 ShortcutAndWidgetContainer swc = cl.getShortcutsAndWidgets(); 1155 final int itemCount = swc.getChildCount(); 1156 for (int j = 0; j < itemCount; j++) { 1157 View v = swc.getChildAt(j); 1158 1159 if (v instanceof LauncherAppWidgetHostView 1160 && v.getTag() instanceof LauncherAppWidgetInfo) { 1161 LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) v.getTag(); 1162 LauncherAppWidgetHostView lahv = (LauncherAppWidgetHostView) v; 1163 if (lahv.isReinflateRequired()) { 1164 // Remove and rebind the current widget (which was inflated in the wrong 1165 // orientation), but don't delete it from the database 1166 mLauncher.removeItem(lahv, info, false /* deleteFromDb */); 1167 mLauncher.bindAppWidget(info); 1168 } 1169 } 1170 } 1171 } 1172 } 1173 1174 @Override 1175 protected void determineScrollingStart(MotionEvent ev) { 1176 if (!isFinishedSwitchingState()) return; 1177 1178 float deltaX = ev.getX() - mXDown; 1179 float absDeltaX = Math.abs(deltaX); 1180 float absDeltaY = Math.abs(ev.getY() - mYDown); 1181 1182 if (Float.compare(absDeltaX, 0f) == 0) return; 1183 1184 float slope = absDeltaY / absDeltaX; 1185 float theta = (float) Math.atan(slope); 1186 1187 if (absDeltaX > mTouchSlop || absDeltaY > mTouchSlop) { 1188 cancelCurrentPageLongPress(); 1189 } 1190 1191 boolean passRightSwipesToCustomContent = 1192 (mTouchDownTime - mCustomContentShowTime) > CUSTOM_CONTENT_GESTURE_DELAY; 1193 1194 boolean swipeInIgnoreDirection = mIsRtl ? deltaX < 0 : deltaX > 0; 1195 boolean onCustomContentScreen = 1196 getScreenIdForPageIndex(getCurrentPage()) == CUSTOM_CONTENT_SCREEN_ID; 1197 if (swipeInIgnoreDirection && onCustomContentScreen && passRightSwipesToCustomContent) { 1198 // Pass swipes to the right to the custom content page. 1199 return; 1200 } 1201 1202 if (onCustomContentScreen && (mCustomContentCallbacks != null) 1203 && !mCustomContentCallbacks.isScrollingAllowed()) { 1204 // Don't allow workspace scrolling if the current custom content screen doesn't allow 1205 // scrolling. 1206 return; 1207 } 1208 1209 if (theta > MAX_SWIPE_ANGLE) { 1210 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 1211 return; 1212 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 1213 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 1214 // increase the touch slop to make it harder to begin scrolling the workspace. This 1215 // results in vertically scrolling widgets to more easily. The higher the angle, the 1216 // more we increase touch slop. 1217 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 1218 float extraRatio = (float) 1219 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 1220 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 1221 } else { 1222 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 1223 super.determineScrollingStart(ev); 1224 } 1225 } 1226 1227 protected void onPageBeginMoving() { 1228 super.onPageBeginMoving(); 1229 1230 if (isHardwareAccelerated()) { 1231 updateChildrenLayersEnabled(false); 1232 } else { 1233 if (mNextPage != INVALID_PAGE) { 1234 // we're snapping to a particular screen 1235 enableChildrenCache(mCurrentPage, mNextPage); 1236 } else { 1237 // this is when user is actively dragging a particular screen, they might 1238 // swipe it either left or right (but we won't advance by more than one screen) 1239 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 1240 } 1241 } 1242 } 1243 1244 protected void onPageEndMoving() { 1245 super.onPageEndMoving(); 1246 1247 if (isHardwareAccelerated()) { 1248 updateChildrenLayersEnabled(false); 1249 } else { 1250 clearChildrenCache(); 1251 } 1252 1253 if (mDragController.isDragging()) { 1254 if (workspaceInModalState()) { 1255 // If we are in springloaded mode, then force an event to check if the current touch 1256 // is under a new page (to scroll to) 1257 mDragController.forceTouchMove(); 1258 } 1259 } 1260 1261 if (mDelayedResizeRunnable != null && !mIsSwitchingState) { 1262 mDelayedResizeRunnable.run(); 1263 mDelayedResizeRunnable = null; 1264 } 1265 1266 if (mDelayedSnapToPageRunnable != null) { 1267 mDelayedSnapToPageRunnable.run(); 1268 mDelayedSnapToPageRunnable = null; 1269 } 1270 if (mStripScreensOnPageStopMoving) { 1271 stripEmptyScreens(); 1272 mStripScreensOnPageStopMoving = false; 1273 } 1274 } 1275 1276 protected void onScrollInteractionBegin() { 1277 super.onScrollInteractionEnd(); 1278 mScrollInteractionBegan = true; 1279 } 1280 1281 protected void onScrollInteractionEnd() { 1282 super.onScrollInteractionEnd(); 1283 mScrollInteractionBegan = false; 1284 if (mStartedSendingScrollEvents) { 1285 mStartedSendingScrollEvents = false; 1286 mLauncherOverlay.onScrollInteractionEnd(); 1287 } 1288 } 1289 1290 public void setLauncherOverlay(LauncherOverlay overlay) { 1291 mLauncherOverlay = overlay; 1292 // A new overlay has been set. Reset event tracking 1293 mStartedSendingScrollEvents = false; 1294 onOverlayScrollChanged(0); 1295 } 1296 1297 @Override 1298 protected int getUnboundedScrollX() { 1299 if (isScrollingOverlay()) { 1300 return mUnboundedScrollX; 1301 } 1302 1303 return super.getUnboundedScrollX(); 1304 } 1305 1306 private boolean isScrollingOverlay() { 1307 return mLauncherOverlay != null && 1308 ((mIsRtl && mUnboundedScrollX > mMaxScrollX) || (!mIsRtl && mUnboundedScrollX < 0)); 1309 } 1310 1311 @Override 1312 protected void snapToDestination() { 1313 // If we're overscrolling the overlay, we make sure to immediately reset the PagedView 1314 // to it's baseline position instead of letting the overscroll settle. The overlay handles 1315 // it's own settling, and every gesture to the overlay should be self-contained and start 1316 // from 0, so we zero it out here. 1317 if (isScrollingOverlay()) { 1318 int finalScroll = mIsRtl ? mMaxScrollX : 0; 1319 1320 // We reset mWasInOverscroll so that PagedView doesn't zero out the overscroll 1321 // interaction when we call scrollTo. 1322 mWasInOverscroll = false; 1323 scrollTo(finalScroll, getScrollY()); 1324 } else { 1325 super.snapToDestination(); 1326 } 1327 } 1328 1329 @Override 1330 public void scrollTo(int x, int y) { 1331 mUnboundedScrollX = x; 1332 super.scrollTo(x, y); 1333 } 1334 1335 @Override 1336 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 1337 super.onScrollChanged(l, t, oldl, oldt); 1338 1339 // Update the page indicator progress. 1340 boolean isTransitioning = mIsSwitchingState 1341 || (getLayoutTransition() != null && getLayoutTransition().isRunning()); 1342 if (!isTransitioning) { 1343 showPageIndicatorAtCurrentScroll(); 1344 } 1345 } 1346 1347 private void showPageIndicatorAtCurrentScroll() { 1348 if (mPageIndicator != null) { 1349 mPageIndicator.setScroll(getScrollX(), computeMaxScrollX()); 1350 } 1351 } 1352 1353 @Override 1354 protected void overScroll(float amount) { 1355 boolean shouldOverScroll = (amount <= 0 && (!hasCustomContent() || mIsRtl)) || 1356 (amount >= 0 && (!hasCustomContent() || !mIsRtl)); 1357 1358 boolean shouldScrollOverlay = mLauncherOverlay != null && 1359 ((amount <= 0 && !mIsRtl) || (amount >= 0 && mIsRtl)); 1360 1361 boolean shouldZeroOverlay = mLauncherOverlay != null && mLastOverlaySroll != 0 && 1362 ((amount >= 0 && !mIsRtl) || (amount <= 0 && mIsRtl)); 1363 1364 if (shouldScrollOverlay) { 1365 if (!mStartedSendingScrollEvents && mScrollInteractionBegan) { 1366 mStartedSendingScrollEvents = true; 1367 mLauncherOverlay.onScrollInteractionBegin(); 1368 } 1369 1370 mLastOverlaySroll = Math.abs(amount / getViewportWidth()); 1371 mLauncherOverlay.onScrollChange(mLastOverlaySroll, mIsRtl); 1372 } else if (shouldOverScroll) { 1373 dampedOverScroll(amount); 1374 } 1375 1376 if (shouldZeroOverlay) { 1377 mLauncherOverlay.onScrollChange(0, mIsRtl); 1378 } 1379 } 1380 1381 private final Interpolator mAlphaInterpolator = new DecelerateInterpolator(3f); 1382 1383 /** 1384 * The overlay scroll is being controlled locally, just update our overlay effect 1385 */ 1386 public void onOverlayScrollChanged(float scroll) { 1387 float offset = 0f; 1388 float slip = 0f; 1389 1390 scroll = Math.max(scroll - offset, 0); 1391 scroll = Math.min(1, scroll / (1 - offset)); 1392 1393 float alpha = 1 - mAlphaInterpolator.getInterpolation(scroll); 1394 float transX = mLauncher.getDragLayer().getMeasuredWidth() * scroll; 1395 transX *= 1 - slip; 1396 1397 if (mIsRtl) { 1398 transX = -transX; 1399 } 1400 mOverlayTranslation = transX; 1401 1402 // TODO(adamcohen): figure out a final effect here. We may need to recommend 1403 // different effects based on device performance. On at least one relatively high-end 1404 // device I've tried, translating the launcher causes things to get quite laggy. 1405 setWorkspaceTranslation(Direction.X, transX, alpha); 1406 setHotseatTranslation(Direction.X, transX, alpha); 1407 } 1408 1409 /** 1410 * Moves the workspace UI in the provided direction. 1411 * @param direction the direction to move the workspace 1412 * @param translation the amount of shift. 1413 * @param alpha the alpha for the workspace page 1414 */ 1415 public void setWorkspaceTranslation(Direction direction, float translation, float alpha) { 1416 Property<View, Float> property = direction.viewProperty; 1417 mPageAlpha[direction.ordinal()] = alpha; 1418 float finalAlpha = mPageAlpha[0] * mPageAlpha[1]; 1419 1420 View currentChild = getChildAt(getCurrentPage()); 1421 if (currentChild != null) { 1422 property.set(currentChild, translation); 1423 currentChild.setAlpha(finalAlpha); 1424 } 1425 1426 // When the animation finishes, reset all pages, just in case we missed a page. 1427 if (Float.compare(translation, 0) == 0) { 1428 for (int i = getChildCount() - 1; i >= 0; i--) { 1429 View child = getChildAt(i); 1430 property.set(child, translation); 1431 child.setAlpha(finalAlpha); 1432 } 1433 } 1434 } 1435 1436 /** 1437 * Moves the Hotseat UI in the provided direction. 1438 * @param direction the direction to move the workspace 1439 * @param translation the amound of shift. 1440 * @param alpha the alpha for the hotseat page 1441 */ 1442 public void setHotseatTranslation(Direction direction, float translation, float alpha) { 1443 Property<View, Float> property = direction.viewProperty; 1444 mHotseatAlpha[direction.ordinal()] = alpha; 1445 float finalAlpha = mHotseatAlpha[0] * mHotseatAlpha[1]; 1446 1447 View pageIndicator = getPageIndicator(); 1448 if (pageIndicator != null) { 1449 property.set(pageIndicator, translation); 1450 pageIndicator.setAlpha(finalAlpha); 1451 } 1452 1453 property.set(mLauncher.getHotseat(), translation); 1454 mLauncher.getHotseat().setAlpha(finalAlpha); 1455 } 1456 1457 @Override 1458 protected Matrix getPageShiftMatrix() { 1459 if (Float.compare(mOverlayTranslation, 0) != 0) { 1460 // The pages are translated by mOverlayTranslation. incorporate that in the 1461 // visible page calculation by shifting everything back by that same amount. 1462 mTempMatrix.set(getMatrix()); 1463 mTempMatrix.postTranslate(-mOverlayTranslation, 0); 1464 return mTempMatrix; 1465 } 1466 return super.getPageShiftMatrix(); 1467 } 1468 1469 @Override 1470 protected void getEdgeVerticalPostion(int[] pos) { 1471 View child = getChildAt(getPageCount() - 1); 1472 pos[0] = child.getTop(); 1473 pos[1] = child.getBottom(); 1474 } 1475 1476 @Override 1477 protected void notifyPageSwitchListener() { 1478 super.notifyPageSwitchListener(); 1479 1480 if (hasCustomContent() && getNextPage() == 0 && !mCustomContentShowing) { 1481 mCustomContentShowing = true; 1482 if (mCustomContentCallbacks != null) { 1483 mCustomContentCallbacks.onShow(false); 1484 mCustomContentShowTime = System.currentTimeMillis(); 1485 } 1486 } else if (hasCustomContent() && getNextPage() != 0 && mCustomContentShowing) { 1487 mCustomContentShowing = false; 1488 if (mCustomContentCallbacks != null) { 1489 mCustomContentCallbacks.onHide(); 1490 } 1491 } 1492 } 1493 1494 protected CustomContentCallbacks getCustomContentCallbacks() { 1495 return mCustomContentCallbacks; 1496 } 1497 1498 protected void setWallpaperDimension() { 1499 Utilities.THREAD_POOL_EXECUTOR.execute(new Runnable() { 1500 @Override 1501 public void run() { 1502 final Point size = LauncherAppState.getInstance() 1503 .getInvariantDeviceProfile().defaultWallpaperSize; 1504 if (size.x != mWallpaperManager.getDesiredMinimumWidth() 1505 || size.y != mWallpaperManager.getDesiredMinimumHeight()) { 1506 mWallpaperManager.suggestDesiredDimensions(size.x, size.y); 1507 } 1508 } 1509 }); 1510 } 1511 1512 protected void snapToPage(int whichPage, Runnable r) { 1513 snapToPage(whichPage, SLOW_PAGE_SNAP_ANIMATION_DURATION, r); 1514 } 1515 1516 protected void snapToPage(int whichPage, int duration, Runnable r) { 1517 if (mDelayedSnapToPageRunnable != null) { 1518 mDelayedSnapToPageRunnable.run(); 1519 } 1520 mDelayedSnapToPageRunnable = r; 1521 snapToPage(whichPage, duration); 1522 } 1523 1524 public void snapToScreenId(long screenId) { 1525 snapToScreenId(screenId, null); 1526 } 1527 1528 protected void snapToScreenId(long screenId, Runnable r) { 1529 snapToPage(getPageIndexForScreenId(screenId), r); 1530 } 1531 1532 @Override 1533 public void computeScroll() { 1534 super.computeScroll(); 1535 mWallpaperOffset.syncWithScroll(); 1536 } 1537 1538 public void computeScrollWithoutInvalidation() { 1539 computeScrollHelper(false); 1540 } 1541 1542 @Override 1543 protected void determineScrollingStart(MotionEvent ev, float touchSlopScale) { 1544 if (!isSwitchingState()) { 1545 super.determineScrollingStart(ev, touchSlopScale); 1546 } 1547 } 1548 1549 @Override 1550 public void announceForAccessibility(CharSequence text) { 1551 // Don't announce if apps is on top of us. 1552 if (!mLauncher.isAppsViewVisible()) { 1553 super.announceForAccessibility(text); 1554 } 1555 } 1556 1557 public void showOutlinesTemporarily() { 1558 if (!mIsPageMoving && !isTouchActive()) { 1559 snapToPage(mCurrentPage); 1560 } 1561 } 1562 1563 private void updatePageAlphaValues(int screenCenter) { 1564 if (mWorkspaceFadeInAdjacentScreens && 1565 !workspaceInModalState() && 1566 !mIsSwitchingState) { 1567 for (int i = numCustomPages(); i < getChildCount(); i++) { 1568 CellLayout child = (CellLayout) getChildAt(i); 1569 if (child != null) { 1570 float scrollProgress = getScrollProgress(screenCenter, child, i); 1571 float alpha = 1 - Math.abs(scrollProgress); 1572 child.getShortcutsAndWidgets().setAlpha(alpha); 1573 } 1574 } 1575 } 1576 } 1577 1578 @TargetApi(Build.VERSION_CODES.LOLLIPOP) 1579 @Override 1580 public void enableAccessibleDrag(boolean enable) { 1581 for (int i = 0; i < getChildCount(); i++) { 1582 CellLayout child = (CellLayout) getChildAt(i); 1583 child.enableAccessibleDrag(enable, CellLayout.WORKSPACE_ACCESSIBILITY_DRAG); 1584 } 1585 1586 if (enable) { 1587 // We need to allow our individual children to become click handlers in this case 1588 setOnClickListener(null); 1589 } else { 1590 // Reset our click listener 1591 setOnClickListener(mLauncher); 1592 } 1593 mLauncher.getDropTargetBar().enableAccessibleDrag(enable); 1594 mLauncher.getHotseat().getLayout() 1595 .enableAccessibleDrag(enable, CellLayout.WORKSPACE_ACCESSIBILITY_DRAG); 1596 } 1597 1598 public boolean hasCustomContent() { 1599 return (mScreenOrder.size() > 0 && mScreenOrder.get(0) == CUSTOM_CONTENT_SCREEN_ID); 1600 } 1601 1602 public int numCustomPages() { 1603 return hasCustomContent() ? 1 : 0; 1604 } 1605 1606 public boolean isOnOrMovingToCustomContent() { 1607 return hasCustomContent() && getNextPage() == 0 && mRestorePage == INVALID_RESTORE_PAGE; 1608 } 1609 1610 private void updateStateForCustomContent(int screenCenter) { 1611 float translationX = 0; 1612 float progress = 0; 1613 if (hasCustomContent()) { 1614 int index = mScreenOrder.indexOf(CUSTOM_CONTENT_SCREEN_ID); 1615 1616 int scrollDelta = getScrollX() - getScrollForPage(index) - 1617 getLayoutTransitionOffsetForPage(index); 1618 float scrollRange = getScrollForPage(index + 1) - getScrollForPage(index); 1619 translationX = scrollRange - scrollDelta; 1620 progress = (scrollRange - scrollDelta) / scrollRange; 1621 1622 if (mIsRtl) { 1623 translationX = Math.min(0, translationX); 1624 } else { 1625 translationX = Math.max(0, translationX); 1626 } 1627 progress = Math.max(0, progress); 1628 } 1629 1630 if (Float.compare(progress, mLastCustomContentScrollProgress) == 0) return; 1631 1632 CellLayout cc = mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID); 1633 if (progress > 0 && cc.getVisibility() != VISIBLE && !workspaceInModalState()) { 1634 cc.setVisibility(VISIBLE); 1635 } 1636 1637 mLastCustomContentScrollProgress = progress; 1638 1639 // We should only update the drag layer background alpha if we are not in all apps or the 1640 // widgets tray 1641 if (mState == State.NORMAL) { 1642 mLauncher.getDragLayer().setBackgroundAlpha(progress == 1 ? 0 : progress * 0.8f); 1643 } 1644 1645 if (mLauncher.getHotseat() != null) { 1646 mLauncher.getHotseat().setTranslationX(translationX); 1647 } 1648 1649 if (getPageIndicator() != null) { 1650 getPageIndicator().setTranslationX(translationX); 1651 } 1652 1653 if (mCustomContentCallbacks != null) { 1654 mCustomContentCallbacks.onScrollProgressChanged(progress); 1655 } 1656 } 1657 1658 @Override 1659 protected OnClickListener getPageIndicatorClickListener() { 1660 AccessibilityManager am = (AccessibilityManager) 1661 getContext().getSystemService(Context.ACCESSIBILITY_SERVICE); 1662 if (!am.isTouchExplorationEnabled()) { 1663 return null; 1664 } 1665 return new OnClickListener() { 1666 @Override 1667 public void onClick(View arg0) { 1668 mLauncher.showOverviewMode(true); 1669 } 1670 }; 1671 } 1672 1673 @Override 1674 protected void screenScrolled(int screenCenter) { 1675 updatePageAlphaValues(screenCenter); 1676 updateStateForCustomContent(screenCenter); 1677 enableHwLayersOnVisiblePages(); 1678 } 1679 1680 protected void onAttachedToWindow() { 1681 super.onAttachedToWindow(); 1682 IBinder windowToken = getWindowToken(); 1683 mWallpaperOffset.setWindowToken(windowToken); 1684 computeScroll(); 1685 mDragController.setWindowToken(windowToken); 1686 } 1687 1688 protected void onDetachedFromWindow() { 1689 super.onDetachedFromWindow(); 1690 mWallpaperOffset.setWindowToken(null); 1691 } 1692 1693 protected void onResume() { 1694 if (getPageIndicator() != null) { 1695 // In case accessibility state has changed, we need to perform this on every 1696 // attach to window 1697 OnClickListener listener = getPageIndicatorClickListener(); 1698 if (listener != null) { 1699 getPageIndicator().setOnClickListener(listener); 1700 } 1701 } 1702 1703 // Update wallpaper dimensions if they were changed since last onResume 1704 // (we also always set the wallpaper dimensions in the constructor) 1705 if (LauncherAppState.getInstance().hasWallpaperChangedSinceLastCheck()) { 1706 setWallpaperDimension(); 1707 } 1708 mWallpaperOffset.onResume(); 1709 } 1710 1711 @Override 1712 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1713 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1714 mWallpaperOffset.syncWithScroll(); 1715 mWallpaperOffset.jumpToFinal(); 1716 } 1717 super.onLayout(changed, left, top, right, bottom); 1718 } 1719 1720 @Override 1721 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1722 if (!mLauncher.isAppsViewVisible()) { 1723 final Folder openFolder = getOpenFolder(); 1724 if (openFolder != null) { 1725 return openFolder.requestFocus(direction, previouslyFocusedRect); 1726 } else { 1727 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1728 } 1729 } 1730 return false; 1731 } 1732 1733 @Override 1734 public int getDescendantFocusability() { 1735 if (workspaceInModalState()) { 1736 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1737 } 1738 return super.getDescendantFocusability(); 1739 } 1740 1741 @Override 1742 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1743 if (!mLauncher.isAppsViewVisible()) { 1744 final Folder openFolder = getOpenFolder(); 1745 if (openFolder != null) { 1746 openFolder.addFocusables(views, direction); 1747 } else { 1748 super.addFocusables(views, direction, focusableMode); 1749 } 1750 } 1751 } 1752 1753 public boolean workspaceInModalState() { 1754 return mState != State.NORMAL; 1755 } 1756 1757 void enableChildrenCache(int fromPage, int toPage) { 1758 if (fromPage > toPage) { 1759 final int temp = fromPage; 1760 fromPage = toPage; 1761 toPage = temp; 1762 } 1763 1764 final int screenCount = getChildCount(); 1765 1766 fromPage = Math.max(fromPage, 0); 1767 toPage = Math.min(toPage, screenCount - 1); 1768 1769 for (int i = fromPage; i <= toPage; i++) { 1770 final CellLayout layout = (CellLayout) getChildAt(i); 1771 layout.setChildrenDrawnWithCacheEnabled(true); 1772 layout.setChildrenDrawingCacheEnabled(true); 1773 } 1774 } 1775 1776 void clearChildrenCache() { 1777 final int screenCount = getChildCount(); 1778 for (int i = 0; i < screenCount; i++) { 1779 final CellLayout layout = (CellLayout) getChildAt(i); 1780 layout.setChildrenDrawnWithCacheEnabled(false); 1781 // In software mode, we don't want the items to continue to be drawn into bitmaps 1782 if (!isHardwareAccelerated()) { 1783 layout.setChildrenDrawingCacheEnabled(false); 1784 } 1785 } 1786 } 1787 1788 @Thunk void updateChildrenLayersEnabled(boolean force) { 1789 boolean small = mState == State.OVERVIEW || mIsSwitchingState; 1790 boolean enableChildrenLayers = force || small || mAnimatingViewIntoPlace || isPageMoving(); 1791 1792 if (enableChildrenLayers != mChildrenLayersEnabled) { 1793 mChildrenLayersEnabled = enableChildrenLayers; 1794 if (mChildrenLayersEnabled) { 1795 enableHwLayersOnVisiblePages(); 1796 } else { 1797 for (int i = 0; i < getPageCount(); i++) { 1798 final CellLayout cl = (CellLayout) getChildAt(i); 1799 cl.enableHardwareLayer(false); 1800 } 1801 } 1802 } 1803 } 1804 1805 private void enableHwLayersOnVisiblePages() { 1806 if (mChildrenLayersEnabled) { 1807 final int screenCount = getChildCount(); 1808 getVisiblePages(mTempVisiblePagesRange); 1809 int leftScreen = mTempVisiblePagesRange[0]; 1810 int rightScreen = mTempVisiblePagesRange[1]; 1811 if (leftScreen == rightScreen) { 1812 // make sure we're caching at least two pages always 1813 if (rightScreen < screenCount - 1) { 1814 rightScreen++; 1815 } else if (leftScreen > 0) { 1816 leftScreen--; 1817 } 1818 } 1819 1820 final CellLayout customScreen = mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID); 1821 for (int i = 0; i < screenCount; i++) { 1822 final CellLayout layout = (CellLayout) getPageAt(i); 1823 1824 // enable layers between left and right screen inclusive, except for the 1825 // customScreen, which may animate its content during transitions. 1826 boolean enableLayer = layout != customScreen && 1827 leftScreen <= i && i <= rightScreen && shouldDrawChild(layout); 1828 layout.enableHardwareLayer(enableLayer); 1829 } 1830 } 1831 } 1832 1833 public void buildPageHardwareLayers() { 1834 // force layers to be enabled just for the call to buildLayer 1835 updateChildrenLayersEnabled(true); 1836 if (getWindowToken() != null) { 1837 final int childCount = getChildCount(); 1838 for (int i = 0; i < childCount; i++) { 1839 CellLayout cl = (CellLayout) getChildAt(i); 1840 cl.buildHardwareLayer(); 1841 } 1842 } 1843 updateChildrenLayersEnabled(false); 1844 } 1845 1846 @Override 1847 protected void getVisiblePages(int[] range) { 1848 super.getVisiblePages(range); 1849 if (mForceDrawAdjacentPages) { 1850 // In overview mode, make sure that the two side pages are visible. 1851 range[0] = Utilities.boundToRange(getCurrentPage() - 1, numCustomPages(), range[1]); 1852 range[1] = Utilities.boundToRange(getCurrentPage() + 1, range[0], getPageCount() - 1); 1853 } 1854 } 1855 1856 protected void onWallpaperTap(MotionEvent ev) { 1857 final int[] position = mTempXY; 1858 getLocationOnScreen(position); 1859 1860 int pointerIndex = ev.getActionIndex(); 1861 position[0] += (int) ev.getX(pointerIndex); 1862 position[1] += (int) ev.getY(pointerIndex); 1863 1864 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1865 ev.getAction() == MotionEvent.ACTION_UP 1866 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1867 position[0], position[1], 0, null); 1868 } 1869 1870 /* 1871 * 1872 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1873 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1874 * 1875 * These methods mark the appropriate pages as accepting drops (which alters their visual 1876 * appearance). 1877 * 1878 */ 1879 private static Rect getDrawableBounds(Drawable d) { 1880 Rect bounds = new Rect(); 1881 d.copyBounds(bounds); 1882 if (bounds.width() == 0 || bounds.height() == 0) { 1883 bounds.set(0, 0, d.getIntrinsicWidth(), d.getIntrinsicHeight()); 1884 } else { 1885 bounds.offsetTo(0, 0); 1886 } 1887 if (d instanceof PreloadIconDrawable) { 1888 int inset = -((PreloadIconDrawable) d).getOutset(); 1889 bounds.inset(inset, inset); 1890 } 1891 return bounds; 1892 } 1893 1894 public void onExternalDragStartedWithItem(View v) { 1895 // Compose a drag bitmap with the view scaled to the icon size 1896 DeviceProfile grid = mLauncher.getDeviceProfile(); 1897 int iconSize = grid.iconSizePx; 1898 int bmpWidth = v.getMeasuredWidth(); 1899 int bmpHeight = v.getMeasuredHeight(); 1900 1901 // If this is a text view, use its drawable instead 1902 if (v instanceof TextView) { 1903 Drawable d = getTextViewIcon((TextView) v); 1904 Rect bounds = getDrawableBounds(d); 1905 bmpWidth = bounds.width(); 1906 bmpHeight = bounds.height(); 1907 } 1908 1909 // Compose the bitmap to create the icon from 1910 Bitmap b = Bitmap.createBitmap(bmpWidth, bmpHeight, 1911 Bitmap.Config.ARGB_8888); 1912 mCanvas.setBitmap(b); 1913 drawDragView(v, mCanvas, 0); 1914 mCanvas.setBitmap(null); 1915 1916 // The outline is used to visualize where the item will land if dropped 1917 mDragOutline = createDragOutline(b, DRAG_BITMAP_PADDING, iconSize, iconSize, true); 1918 } 1919 1920 public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, boolean clipAlpha) { 1921 // Find a page that has enough space to place this widget (after rearranging/resizing). 1922 // Start at the current page and search right (on LTR) until finding a page with enough 1923 // space. Since an empty screen is the furthest right, a page must be found. 1924 int currentPageInOverview = getPageNearestToCenterOfScreen(); 1925 for (int pageIndex = currentPageInOverview; pageIndex < getPageCount(); pageIndex++) { 1926 CellLayout page = (CellLayout) getPageAt(pageIndex); 1927 if (page.hasReorderSolution(info)) { 1928 setCurrentPage(pageIndex); 1929 break; 1930 } 1931 } 1932 1933 int[] size = estimateItemSize(info, false); 1934 1935 // The outline is used to visualize where the item will land if dropped 1936 mDragOutline = createDragOutline(b, DRAG_BITMAP_PADDING, size[0], size[1], clipAlpha); 1937 } 1938 1939 public void exitWidgetResizeMode() { 1940 DragLayer dragLayer = mLauncher.getDragLayer(); 1941 dragLayer.clearAllResizeFrames(); 1942 } 1943 1944 @Override 1945 protected void getFreeScrollPageRange(int[] range) { 1946 getOverviewModePages(range); 1947 } 1948 1949 private void getOverviewModePages(int[] range) { 1950 int start = numCustomPages(); 1951 int end = getChildCount() - 1; 1952 1953 range[0] = Math.max(0, Math.min(start, getChildCount() - 1)); 1954 range[1] = Math.max(0, end); 1955 } 1956 1957 public void onStartReordering() { 1958 super.onStartReordering(); 1959 // Reordering handles its own animations, disable the automatic ones. 1960 disableLayoutTransitions(); 1961 } 1962 1963 public void onEndReordering() { 1964 super.onEndReordering(); 1965 1966 if (mLauncher.isWorkspaceLoading()) { 1967 // Invalid and dangerous operation if workspace is loading 1968 return; 1969 } 1970 1971 mScreenOrder.clear(); 1972 int count = getChildCount(); 1973 for (int i = 0; i < count; i++) { 1974 CellLayout cl = ((CellLayout) getChildAt(i)); 1975 mScreenOrder.add(getIdForScreen(cl)); 1976 } 1977 1978 mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); 1979 1980 // Re-enable auto layout transitions for page deletion. 1981 enableLayoutTransitions(); 1982 } 1983 1984 public boolean isInOverviewMode() { 1985 return mState == State.OVERVIEW; 1986 } 1987 1988 public void snapToPageFromOverView(int whichPage) { 1989 mStateTransitionAnimation.snapToPageFromOverView(whichPage); 1990 } 1991 1992 int getOverviewModeTranslationY() { 1993 DeviceProfile grid = mLauncher.getDeviceProfile(); 1994 Rect workspacePadding = grid.getWorkspacePadding(); 1995 int overviewButtonBarHeight = grid.getOverviewModeButtonBarHeight(); 1996 1997 int scaledHeight = (int) (mOverviewModeShrinkFactor * getNormalChildHeight()); 1998 int workspaceTop = mInsets.top + workspacePadding.top; 1999 int workspaceBottom = getViewportHeight() - mInsets.bottom - workspacePadding.bottom; 2000 int overviewTop = mInsets.top; 2001 int overviewBottom = getViewportHeight() - mInsets.bottom - overviewButtonBarHeight; 2002 int workspaceOffsetTopEdge = workspaceTop + ((workspaceBottom - workspaceTop) - scaledHeight) / 2; 2003 int overviewOffsetTopEdge = overviewTop + (overviewBottom - overviewTop - scaledHeight) / 2; 2004 return -workspaceOffsetTopEdge + overviewOffsetTopEdge; 2005 } 2006 2007 float getSpringLoadedTranslationY() { 2008 DeviceProfile grid = mLauncher.getDeviceProfile(); 2009 if (grid.isVerticalBarLayout() || getChildCount() == 0) { 2010 return 0; 2011 } 2012 Rect workspacePadding = grid.getWorkspacePadding(); 2013 2014 float scaledHeight = grid.workspaceSpringLoadShrinkFactor * getNormalChildHeight(); 2015 float shrunkTop = mInsets.top + grid.dropTargetBarSizePx; 2016 float shrunkBottom = getViewportHeight() - mInsets.bottom 2017 - workspacePadding.bottom - grid.workspaceSpringLoadedBottomSpace; 2018 float totalShrunkSpace = shrunkBottom - shrunkTop; 2019 2020 float desiredCellTop = shrunkTop + (totalShrunkSpace - scaledHeight) / 2; 2021 2022 float halfHeight = getHeight() / 2; 2023 float myCenter = getTop() + halfHeight; 2024 float cellTopFromCenter = halfHeight - getChildAt(0).getTop(); 2025 float actualCellTop = myCenter - cellTopFromCenter * grid.workspaceSpringLoadShrinkFactor; 2026 return (desiredCellTop - actualCellTop) / grid.workspaceSpringLoadShrinkFactor; 2027 } 2028 2029 float getOverviewModeShrinkFactor() { 2030 return mOverviewModeShrinkFactor; 2031 } 2032 2033 /** 2034 * Sets the current workspace {@link State}, returning an animation transitioning the workspace 2035 * to that new state. 2036 */ 2037 public Animator setStateWithAnimation(State toState, boolean animated, 2038 HashMap<View, Integer> layerViews) { 2039 // Create the animation to the new state 2040 AnimatorSet workspaceAnim = mStateTransitionAnimation.getAnimationToState(mState, 2041 toState, animated, layerViews); 2042 2043 boolean shouldNotifyWidgetChange = !mState.shouldUpdateWidget 2044 && toState.shouldUpdateWidget; 2045 // Update the current state 2046 mState = toState; 2047 updateAccessibilityFlags(); 2048 2049 if (shouldNotifyWidgetChange) { 2050 mLauncher.notifyWidgetProvidersChanged(); 2051 } 2052 2053 if (mOnStateChangeListener != null) { 2054 mOnStateChangeListener.prepareStateChange(toState, animated ? workspaceAnim : null); 2055 } 2056 2057 return workspaceAnim; 2058 } 2059 2060 State getState() { 2061 return mState; 2062 } 2063 2064 public void updateAccessibilityFlags() { 2065 if (Utilities.ATLEAST_LOLLIPOP) { 2066 int total = getPageCount(); 2067 for (int i = numCustomPages(); i < total; i++) { 2068 updateAccessibilityFlags((CellLayout) getPageAt(i), i); 2069 } 2070 setImportantForAccessibility((mState == State.NORMAL || mState == State.OVERVIEW) 2071 ? IMPORTANT_FOR_ACCESSIBILITY_AUTO 2072 : IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS); 2073 } else { 2074 int accessible = mState == State.NORMAL ? 2075 IMPORTANT_FOR_ACCESSIBILITY_AUTO : 2076 IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS; 2077 setImportantForAccessibility(accessible); 2078 } 2079 } 2080 2081 private void updateAccessibilityFlags(CellLayout page, int pageNo) { 2082 if (mState == State.OVERVIEW) { 2083 page.setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_YES); 2084 page.getShortcutsAndWidgets().setImportantForAccessibility( 2085 IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS); 2086 page.setContentDescription(getPageDescription(pageNo)); 2087 2088 if (mPagesAccessibilityDelegate == null) { 2089 mPagesAccessibilityDelegate = new OverviewScreenAccessibilityDelegate(this); 2090 } 2091 page.setAccessibilityDelegate(mPagesAccessibilityDelegate); 2092 } else { 2093 int accessible = mState == State.NORMAL ? 2094 IMPORTANT_FOR_ACCESSIBILITY_AUTO : 2095 IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS; 2096 page.setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_NO); 2097 page.getShortcutsAndWidgets().setImportantForAccessibility(accessible); 2098 page.setContentDescription(null); 2099 page.setAccessibilityDelegate(null); 2100 } 2101 } 2102 2103 @Override 2104 public void onLauncherTransitionPrepare(Launcher l, boolean animated, 2105 boolean multiplePagesVisible) { 2106 mIsSwitchingState = true; 2107 mTransitionProgress = 0; 2108 2109 if (multiplePagesVisible) { 2110 mForceDrawAdjacentPages = true; 2111 } 2112 invalidate(); // This will call dispatchDraw(), which calls getVisiblePages(). 2113 2114 updateChildrenLayersEnabled(false); 2115 hideCustomContentIfNecessary(); 2116 } 2117 2118 @Override 2119 public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) { 2120 if (mPageIndicator instanceof PageIndicator) { 2121 boolean isNewStateSpringLoaded = mState == State.SPRING_LOADED; 2122 mPageIndicator.setShouldAutoHide(!isNewStateSpringLoaded); 2123 if (isNewStateSpringLoaded) { 2124 // Show the page indicator at the same time as the rest of the transition. 2125 showPageIndicatorAtCurrentScroll(); 2126 } 2127 } 2128 } 2129 2130 @Override 2131 public void onLauncherTransitionStep(Launcher l, float t) { 2132 mTransitionProgress = t; 2133 } 2134 2135 @Override 2136 public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) { 2137 mIsSwitchingState = false; 2138 updateChildrenLayersEnabled(false); 2139 showCustomContentIfNecessary(); 2140 mForceDrawAdjacentPages = false; 2141 if (mState == State.SPRING_LOADED) { 2142 showPageIndicatorAtCurrentScroll(); 2143 } 2144 } 2145 2146 void updateCustomContentVisibility() { 2147 int visibility = mState == Workspace.State.NORMAL ? VISIBLE : INVISIBLE; 2148 setCustomContentVisibility(visibility); 2149 } 2150 2151 void setCustomContentVisibility(int visibility) { 2152 if (hasCustomContent()) { 2153 mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID).setVisibility(visibility); 2154 } 2155 } 2156 2157 void showCustomContentIfNecessary() { 2158 boolean show = mState == Workspace.State.NORMAL; 2159 if (show && hasCustomContent()) { 2160 mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID).setVisibility(VISIBLE); 2161 } 2162 } 2163 2164 void hideCustomContentIfNecessary() { 2165 boolean hide = mState != Workspace.State.NORMAL; 2166 if (hide && hasCustomContent()) { 2167 disableLayoutTransitions(); 2168 mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID).setVisibility(INVISIBLE); 2169 enableLayoutTransitions(); 2170 } 2171 } 2172 2173 /** 2174 * Returns the drawable for the given text view. 2175 */ 2176 public static Drawable getTextViewIcon(TextView tv) { 2177 final Drawable[] drawables = tv.getCompoundDrawables(); 2178 for (int i = 0; i < drawables.length; i++) { 2179 if (drawables[i] != null) { 2180 return drawables[i]; 2181 } 2182 } 2183 return null; 2184 } 2185 2186 /** 2187 * Draw the View v into the given Canvas. 2188 * 2189 * @param v the view to draw 2190 * @param destCanvas the canvas to draw on 2191 * @param padding the horizontal and vertical padding to use when drawing 2192 */ 2193 private static void drawDragView(View v, Canvas destCanvas, int padding) { 2194 destCanvas.save(); 2195 if (v instanceof TextView) { 2196 Drawable d = getTextViewIcon((TextView) v); 2197 Rect bounds = getDrawableBounds(d); 2198 destCanvas.translate(padding / 2 - bounds.left, padding / 2 - bounds.top); 2199 d.draw(destCanvas); 2200 } else { 2201 final Rect clipRect = sTempRect; 2202 v.getDrawingRect(clipRect); 2203 2204 boolean textVisible = false; 2205 if (v instanceof FolderIcon) { 2206 // For FolderIcons the text can bleed into the icon area, and so we need to 2207 // hide the text completely (which can't be achieved by clipping). 2208 if (((FolderIcon) v).getTextVisible()) { 2209 ((FolderIcon) v).setTextVisible(false); 2210 textVisible = true; 2211 } 2212 } 2213 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 2214 destCanvas.clipRect(clipRect, Op.REPLACE); 2215 v.draw(destCanvas); 2216 2217 // Restore text visibility of FolderIcon if necessary 2218 if (textVisible) { 2219 ((FolderIcon) v).setTextVisible(true); 2220 } 2221 } 2222 destCanvas.restore(); 2223 } 2224 2225 /** 2226 * Returns a new bitmap to show when the given View is being dragged around. 2227 * Responsibility for the bitmap is transferred to the caller. 2228 * @param expectedPadding padding to add to the drag view. If a different padding was used 2229 * its value will be changed 2230 */ 2231 public Bitmap createDragBitmap(View v, AtomicInteger expectedPadding) { 2232 Bitmap b; 2233 2234 int padding = expectedPadding.get(); 2235 if (v instanceof TextView) { 2236 Drawable d = getTextViewIcon((TextView) v); 2237 Rect bounds = getDrawableBounds(d); 2238 b = Bitmap.createBitmap(bounds.width() + padding, 2239 bounds.height() + padding, Bitmap.Config.ARGB_8888); 2240 expectedPadding.set(padding - bounds.left - bounds.top); 2241 } else { 2242 b = Bitmap.createBitmap( 2243 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 2244 } 2245 2246 mCanvas.setBitmap(b); 2247 drawDragView(v, mCanvas, padding); 2248 mCanvas.setBitmap(null); 2249 2250 return b; 2251 } 2252 2253 /** 2254 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2255 * Responsibility for the bitmap is transferred to the caller. 2256 */ 2257 private Bitmap createDragOutline(View v, int padding) { 2258 final int outlineColor = getResources().getColor(R.color.outline_color); 2259 final Bitmap b = Bitmap.createBitmap( 2260 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 2261 2262 mCanvas.setBitmap(b); 2263 drawDragView(v, mCanvas, padding); 2264 mOutlineHelper.applyExpensiveOutlineWithBlur(b, mCanvas, outlineColor, outlineColor); 2265 mCanvas.setBitmap(null); 2266 return b; 2267 } 2268 2269 /** 2270 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2271 * Responsibility for the bitmap is transferred to the caller. 2272 */ 2273 private Bitmap createDragOutline(Bitmap orig, int padding, int w, int h, 2274 boolean clipAlpha) { 2275 final int outlineColor = getResources().getColor(R.color.outline_color); 2276 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 2277 mCanvas.setBitmap(b); 2278 2279 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 2280 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 2281 (h - padding) / (float) orig.getHeight()); 2282 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 2283 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 2284 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 2285 2286 // center the image 2287 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 2288 2289 mCanvas.drawBitmap(orig, src, dst, null); 2290 mOutlineHelper.applyExpensiveOutlineWithBlur(b, mCanvas, outlineColor, outlineColor, 2291 clipAlpha); 2292 mCanvas.setBitmap(null); 2293 2294 return b; 2295 } 2296 2297 public void startDrag(CellLayout.CellInfo cellInfo) { 2298 startDrag(cellInfo, false); 2299 } 2300 2301 @Override 2302 public void startDrag(CellLayout.CellInfo cellInfo, boolean accessible) { 2303 View child = cellInfo.cell; 2304 2305 // Make sure the drag was started by a long press as opposed to a long click. 2306 if (!child.isInTouchMode()) { 2307 return; 2308 } 2309 2310 mDragInfo = cellInfo; 2311 child.setVisibility(INVISIBLE); 2312 CellLayout layout = (CellLayout) child.getParent().getParent(); 2313 layout.prepareChildForDrag(child); 2314 2315 beginDragShared(child, this, accessible); 2316 } 2317 2318 public void beginDragShared(View child, DragSource source, boolean accessible) { 2319 beginDragShared(child, new Point(), source, accessible); 2320 } 2321 2322 public void beginDragShared(View child, Point relativeTouchPos, DragSource source, 2323 boolean accessible) { 2324 child.clearFocus(); 2325 child.setPressed(false); 2326 2327 // The outline is used to visualize where the item will land if dropped 2328 mDragOutline = createDragOutline(child, DRAG_BITMAP_PADDING); 2329 2330 mLauncher.onDragStarted(child); 2331 // The drag bitmap follows the touch point around on the screen 2332 AtomicInteger padding = new AtomicInteger(DRAG_BITMAP_PADDING); 2333 final Bitmap b = createDragBitmap(child, padding); 2334 2335 final int bmpWidth = b.getWidth(); 2336 final int bmpHeight = b.getHeight(); 2337 2338 float scale = mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 2339 int dragLayerX = Math.round(mTempXY[0] - (bmpWidth - scale * child.getWidth()) / 2); 2340 int dragLayerY = Math.round(mTempXY[1] - (bmpHeight - scale * bmpHeight) / 2 2341 - padding.get() / 2); 2342 2343 DeviceProfile grid = mLauncher.getDeviceProfile(); 2344 Point dragVisualizeOffset = null; 2345 Rect dragRect = null; 2346 if (child instanceof BubbleTextView) { 2347 BubbleTextView icon = (BubbleTextView) child; 2348 int iconSize = grid.iconSizePx; 2349 int top = child.getPaddingTop(); 2350 int left = (bmpWidth - iconSize) / 2; 2351 int right = left + iconSize; 2352 int bottom = top + iconSize; 2353 if (icon.isLayoutHorizontal()) { 2354 // If the layout is horizontal, then if we are just picking up the icon, then just 2355 // use the child position since the icon is top-left aligned. Otherwise, offset 2356 // the drag layer position horizontally so that the icon is under the current 2357 // touch position. 2358 if (icon.getIcon().getBounds().contains(relativeTouchPos.x, relativeTouchPos.y)) { 2359 dragLayerX = Math.round(mTempXY[0]); 2360 } else { 2361 dragLayerX = Math.round(mTempXY[0] + relativeTouchPos.x - (bmpWidth / 2)); 2362 } 2363 } 2364 dragLayerY += top; 2365 // Note: The drag region is used to calculate drag layer offsets, but the 2366 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 2367 dragVisualizeOffset = new Point(-padding.get() / 2, padding.get() / 2); 2368 dragRect = new Rect(left, top, right, bottom); 2369 } else if (child instanceof FolderIcon) { 2370 int previewSize = grid.folderIconSizePx; 2371 dragVisualizeOffset = new Point(-padding.get() / 2, 2372 padding.get() / 2 - child.getPaddingTop()); 2373 dragRect = new Rect(0, child.getPaddingTop(), child.getWidth(), previewSize); 2374 } 2375 2376 // Clear the pressed state if necessary 2377 if (child instanceof BubbleTextView) { 2378 BubbleTextView icon = (BubbleTextView) child; 2379 icon.clearPressedBackground(); 2380 } 2381 2382 Object dragObject = child.getTag(); 2383 if (!(dragObject instanceof ItemInfo)) { 2384 String msg = "Drag started with a view that has no tag set. This " 2385 + "will cause a crash (issue 11627249) down the line. " 2386 + "View: " + child + " tag: " + child.getTag(); 2387 throw new IllegalStateException(msg); 2388 } 2389 2390 if (child.getParent() instanceof ShortcutAndWidgetContainer) { 2391 mDragSourceInternal = (ShortcutAndWidgetContainer) child.getParent(); 2392 } 2393 2394 DragView dv = mDragController.startDrag(b, dragLayerX, dragLayerY, source, 2395 (ItemInfo) dragObject, DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, 2396 dragRect, scale, accessible); 2397 dv.setIntrinsicIconScaleFactor(source.getIntrinsicIconScaleFactor()); 2398 2399 b.recycle(); 2400 2401 if (!FeatureFlags.LAUNCHER3_LEGACY_WORKSPACE_DND) { 2402 mLauncher.enterSpringLoadedDragMode(); 2403 } 2404 } 2405 2406 public void beginExternalDragShared(View child, DragSource source) { 2407 DeviceProfile grid = mLauncher.getDeviceProfile(); 2408 int iconSize = grid.iconSizePx; 2409 2410 // Notify launcher of drag start 2411 mLauncher.onDragStarted(child); 2412 2413 // Compose a new drag bitmap that is of the icon size 2414 AtomicInteger padding = new AtomicInteger(DRAG_BITMAP_PADDING); 2415 final Bitmap tmpB = createDragBitmap(child, padding); 2416 Bitmap b = Bitmap.createBitmap(iconSize, iconSize, Bitmap.Config.ARGB_8888); 2417 Paint p = new Paint(); 2418 p.setFilterBitmap(true); 2419 mCanvas.setBitmap(b); 2420 mCanvas.drawBitmap(tmpB, new Rect(0, 0, tmpB.getWidth(), tmpB.getHeight()), 2421 new Rect(0, 0, iconSize, iconSize), p); 2422 mCanvas.setBitmap(null); 2423 2424 // Find the child's location on the screen 2425 int bmpWidth = tmpB.getWidth(); 2426 float iconScale = (float) bmpWidth / iconSize; 2427 float scale = mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY) * iconScale; 2428 int dragLayerX = Math.round(mTempXY[0] - (bmpWidth - scale * child.getWidth()) / 2); 2429 int dragLayerY = Math.round(mTempXY[1]); 2430 2431 // Note: The drag region is used to calculate drag layer offsets, but the 2432 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 2433 Point dragVisualizeOffset = new Point(-padding.get() / 2, padding.get() / 2); 2434 Rect dragRect = new Rect(0, 0, iconSize, iconSize); 2435 2436 Object dragObject = child.getTag(); 2437 if (!(dragObject instanceof ItemInfo)) { 2438 String msg = "Drag started with a view that has no tag set. This " 2439 + "will cause a crash (issue 11627249) down the line. " 2440 + "View: " + child + " tag: " + child.getTag(); 2441 throw new IllegalStateException(msg); 2442 } 2443 2444 // Start the drag 2445 DragView dv = mDragController.startDrag(b, dragLayerX, dragLayerY, source, 2446 (ItemInfo) dragObject, DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, 2447 dragRect, scale, false); 2448 dv.setIntrinsicIconScaleFactor(source.getIntrinsicIconScaleFactor()); 2449 2450 // Recycle temporary bitmaps 2451 tmpB.recycle(); 2452 2453 if (!FeatureFlags.LAUNCHER3_LEGACY_WORKSPACE_DND) { 2454 mLauncher.enterSpringLoadedDragMode(); 2455 } 2456 } 2457 2458 public boolean transitionStateShouldAllowDrop() { 2459 return ((!isSwitchingState() || mTransitionProgress > 0.5f) && 2460 (mState == State.NORMAL || mState == State.SPRING_LOADED)); 2461 } 2462 2463 /** 2464 * {@inheritDoc} 2465 */ 2466 public boolean acceptDrop(DragObject d) { 2467 // If it's an external drop (e.g. from All Apps), check if it should be accepted 2468 CellLayout dropTargetLayout = mDropToLayout; 2469 if (d.dragSource != this) { 2470 // Don't accept the drop if we're not over a screen at time of drop 2471 if (dropTargetLayout == null) { 2472 return false; 2473 } 2474 if (!transitionStateShouldAllowDrop()) return false; 2475 2476 mDragViewVisualCenter = d.getVisualCenter(mDragViewVisualCenter); 2477 2478 // We want the point to be mapped to the dragTarget. 2479 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 2480 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2481 } else { 2482 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter); 2483 } 2484 2485 int spanX = 1; 2486 int spanY = 1; 2487 if (mDragInfo != null) { 2488 final CellLayout.CellInfo dragCellInfo = mDragInfo; 2489 spanX = dragCellInfo.spanX; 2490 spanY = dragCellInfo.spanY; 2491 } else { 2492 spanX = d.dragInfo.spanX; 2493 spanY = d.dragInfo.spanY; 2494 } 2495 2496 int minSpanX = spanX; 2497 int minSpanY = spanY; 2498 if (d.dragInfo instanceof PendingAddWidgetInfo) { 2499 minSpanX = ((PendingAddWidgetInfo) d.dragInfo).minSpanX; 2500 minSpanY = ((PendingAddWidgetInfo) d.dragInfo).minSpanY; 2501 } 2502 2503 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2504 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, dropTargetLayout, 2505 mTargetCell); 2506 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2507 mDragViewVisualCenter[1], mTargetCell); 2508 if (mCreateUserFolderOnDrop && willCreateUserFolder(d.dragInfo, 2509 dropTargetLayout, mTargetCell, distance, true)) { 2510 return true; 2511 } 2512 2513 if (mAddToExistingFolderOnDrop && willAddToExistingUserFolder(d.dragInfo, 2514 dropTargetLayout, mTargetCell, distance)) { 2515 return true; 2516 } 2517 2518 int[] resultSpan = new int[2]; 2519 mTargetCell = dropTargetLayout.performReorder((int) mDragViewVisualCenter[0], 2520 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2521 null, mTargetCell, resultSpan, CellLayout.MODE_ACCEPT_DROP); 2522 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2523 2524 // Don't accept the drop if there's no room for the item 2525 if (!foundCell) { 2526 // Don't show the message if we are dropping on the AllApps button and the hotseat 2527 // is full 2528 boolean isHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2529 if (mTargetCell != null && isHotseat && !FeatureFlags.NO_ALL_APPS_ICON) { 2530 Hotseat hotseat = mLauncher.getHotseat(); 2531 if (mLauncher.getDeviceProfile().inv.isAllAppsButtonRank( 2532 hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { 2533 return false; 2534 } 2535 } 2536 2537 mLauncher.showOutOfSpaceMessage(isHotseat); 2538 return false; 2539 } 2540 } 2541 2542 long screenId = getIdForScreen(dropTargetLayout); 2543 if (screenId == EXTRA_EMPTY_SCREEN_ID) { 2544 commitExtraEmptyScreen(); 2545 } 2546 2547 return true; 2548 } 2549 2550 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, 2551 float distance, boolean considerTimeout) { 2552 if (distance > mMaxDistanceForFolderCreation) return false; 2553 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2554 return willCreateUserFolder(info, dropOverView, considerTimeout); 2555 } 2556 2557 boolean willCreateUserFolder(ItemInfo info, View dropOverView, boolean considerTimeout) { 2558 if (dropOverView != null) { 2559 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2560 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.cellY)) { 2561 return false; 2562 } 2563 } 2564 2565 boolean hasntMoved = false; 2566 if (mDragInfo != null) { 2567 hasntMoved = dropOverView == mDragInfo.cell; 2568 } 2569 2570 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2571 return false; 2572 } 2573 2574 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2575 boolean willBecomeShortcut = 2576 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2577 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT || 2578 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_DEEP_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 case LauncherSettings.Favorites.ITEM_TYPE_DEEP_SHORTCUT: 3513 if (info.container == NO_ID && info instanceof AppInfo) { 3514 // Came from all apps -- make a copy 3515 info = ((AppInfo) info).makeShortcut(); 3516 } 3517 view = mLauncher.createShortcut(cellLayout, (ShortcutInfo) info); 3518 break; 3519 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 3520 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 3521 (FolderInfo) info, mIconCache); 3522 break; 3523 default: 3524 throw new IllegalStateException("Unknown item type: " + info.itemType); 3525 } 3526 3527 // First we find the cell nearest to point at which the item is 3528 // dropped, without any consideration to whether there is an item there. 3529 if (touchXY != null) { 3530 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3531 cellLayout, mTargetCell); 3532 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3533 mDragViewVisualCenter[1], mTargetCell); 3534 d.postAnimationRunnable = exitSpringLoadedRunnable; 3535 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, distance, 3536 true, d.dragView, d.postAnimationRunnable)) { 3537 return; 3538 } 3539 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, distance, d, 3540 true)) { 3541 return; 3542 } 3543 } 3544 3545 if (touchXY != null) { 3546 // when dragging and dropping, just find the closest free spot 3547 mTargetCell = cellLayout.performReorder((int) mDragViewVisualCenter[0], 3548 (int) mDragViewVisualCenter[1], 1, 1, 1, 1, 3549 null, mTargetCell, null, CellLayout.MODE_ON_DROP_EXTERNAL); 3550 } else { 3551 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3552 } 3553 // Add the item to DB before adding to screen ensures that the container and other 3554 // values of the info is properly updated. 3555 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screenId, 3556 mTargetCell[0], mTargetCell[1]); 3557 3558 addInScreen(view, container, screenId, mTargetCell[0], mTargetCell[1], info.spanX, 3559 info.spanY, insertAtFirst); 3560 cellLayout.onDropChild(view); 3561 cellLayout.getShortcutsAndWidgets().measureChild(view); 3562 3563 if (d.dragView != null) { 3564 // We wrap the animation call in the temporary set and reset of the current 3565 // cellLayout to its final transform -- this means we animate the drag view to 3566 // the correct final location. 3567 setFinalTransitionTransform(cellLayout); 3568 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 3569 exitSpringLoadedRunnable, this); 3570 resetTransitionTransform(cellLayout); 3571 } 3572 } 3573 } 3574 3575 public Bitmap createWidgetBitmap(ItemInfo widgetInfo, View layout) { 3576 int[] unScaledSize = mLauncher.getWorkspace().estimateItemSize(widgetInfo, false); 3577 int visibility = layout.getVisibility(); 3578 layout.setVisibility(VISIBLE); 3579 3580 int width = MeasureSpec.makeMeasureSpec(unScaledSize[0], MeasureSpec.EXACTLY); 3581 int height = MeasureSpec.makeMeasureSpec(unScaledSize[1], MeasureSpec.EXACTLY); 3582 Bitmap b = Bitmap.createBitmap(unScaledSize[0], unScaledSize[1], 3583 Bitmap.Config.ARGB_8888); 3584 mCanvas.setBitmap(b); 3585 3586 layout.measure(width, height); 3587 layout.layout(0, 0, unScaledSize[0], unScaledSize[1]); 3588 layout.draw(mCanvas); 3589 mCanvas.setBitmap(null); 3590 layout.setVisibility(visibility); 3591 return b; 3592 } 3593 3594 private void getFinalPositionForDropAnimation(int[] loc, float[] scaleXY, 3595 DragView dragView, CellLayout layout, ItemInfo info, int[] targetCell, boolean scale) { 3596 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 3597 // location and size on the home screen. 3598 int spanX = info.spanX; 3599 int spanY = info.spanY; 3600 3601 Rect r = estimateItemPosition(layout, targetCell[0], targetCell[1], spanX, spanY); 3602 loc[0] = r.left; 3603 loc[1] = r.top; 3604 3605 setFinalTransitionTransform(layout); 3606 float cellLayoutScale = 3607 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(layout, loc, true); 3608 resetTransitionTransform(layout); 3609 3610 float dragViewScaleX; 3611 float dragViewScaleY; 3612 if (scale) { 3613 dragViewScaleX = (1.0f * r.width()) / dragView.getMeasuredWidth(); 3614 dragViewScaleY = (1.0f * r.height()) / dragView.getMeasuredHeight(); 3615 } else { 3616 dragViewScaleX = 1f; 3617 dragViewScaleY = 1f; 3618 } 3619 3620 // The animation will scale the dragView about its center, so we need to center about 3621 // the final location. 3622 loc[0] -= (dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2 3623 - Math.ceil(layout.getUnusedHorizontalSpace() / 2f); 3624 loc[1] -= (dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 3625 3626 scaleXY[0] = dragViewScaleX * cellLayoutScale; 3627 scaleXY[1] = dragViewScaleY * cellLayoutScale; 3628 } 3629 3630 public void animateWidgetDrop(ItemInfo info, CellLayout cellLayout, final DragView dragView, 3631 final Runnable onCompleteRunnable, int animationType, final View finalView, 3632 boolean external) { 3633 Rect from = new Rect(); 3634 mLauncher.getDragLayer().getViewRectRelativeToSelf(dragView, from); 3635 3636 int[] finalPos = new int[2]; 3637 float scaleXY[] = new float[2]; 3638 boolean scalePreview = !(info instanceof PendingAddShortcutInfo); 3639 getFinalPositionForDropAnimation(finalPos, scaleXY, dragView, cellLayout, info, mTargetCell, 3640 scalePreview); 3641 3642 Resources res = mLauncher.getResources(); 3643 final int duration = res.getInteger(R.integer.config_dropAnimMaxDuration) - 200; 3644 3645 boolean isWidget = info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET || 3646 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_CUSTOM_APPWIDGET; 3647 if ((animationType == ANIMATE_INTO_POSITION_AND_RESIZE || external) && finalView != null) { 3648 Bitmap crossFadeBitmap = createWidgetBitmap(info, finalView); 3649 dragView.setCrossFadeBitmap(crossFadeBitmap); 3650 dragView.crossFade((int) (duration * 0.8f)); 3651 } else if (isWidget && external) { 3652 scaleXY[0] = scaleXY[1] = Math.min(scaleXY[0], scaleXY[1]); 3653 } 3654 3655 DragLayer dragLayer = mLauncher.getDragLayer(); 3656 if (animationType == CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION) { 3657 mLauncher.getDragLayer().animateViewIntoPosition(dragView, finalPos, 0f, 0.1f, 0.1f, 3658 DragLayer.ANIMATION_END_DISAPPEAR, onCompleteRunnable, duration); 3659 } else { 3660 int endStyle; 3661 if (animationType == ANIMATE_INTO_POSITION_AND_REMAIN) { 3662 endStyle = DragLayer.ANIMATION_END_REMAIN_VISIBLE; 3663 } else { 3664 endStyle = DragLayer.ANIMATION_END_DISAPPEAR; 3665 } 3666 3667 Runnable onComplete = new Runnable() { 3668 @Override 3669 public void run() { 3670 if (finalView != null) { 3671 finalView.setVisibility(VISIBLE); 3672 } 3673 if (onCompleteRunnable != null) { 3674 onCompleteRunnable.run(); 3675 } 3676 } 3677 }; 3678 dragLayer.animateViewIntoPosition(dragView, from.left, from.top, finalPos[0], 3679 finalPos[1], 1, 1, 1, scaleXY[0], scaleXY[1], onComplete, endStyle, 3680 duration, this); 3681 } 3682 } 3683 3684 public void setFinalTransitionTransform(CellLayout layout) { 3685 if (isSwitchingState()) { 3686 mCurrentScale = getScaleX(); 3687 setScaleX(mStateTransitionAnimation.getFinalScale()); 3688 setScaleY(mStateTransitionAnimation.getFinalScale()); 3689 } 3690 } 3691 public void resetTransitionTransform(CellLayout layout) { 3692 if (isSwitchingState()) { 3693 setScaleX(mCurrentScale); 3694 setScaleY(mCurrentScale); 3695 } 3696 } 3697 3698 public WorkspaceStateTransitionAnimation getStateTransitionAnimation() { 3699 return mStateTransitionAnimation; 3700 } 3701 3702 /** 3703 * Return the current {@link CellLayout}, correctly picking the destination 3704 * screen while a scroll is in progress. 3705 */ 3706 public CellLayout getCurrentDropLayout() { 3707 return (CellLayout) getChildAt(getNextPage()); 3708 } 3709 3710 /** 3711 * Return the current CellInfo describing our current drag; this method exists 3712 * so that Launcher can sync this object with the correct info when the activity is created/ 3713 * destroyed 3714 * 3715 */ 3716 public CellLayout.CellInfo getDragInfo() { 3717 return mDragInfo; 3718 } 3719 3720 public int getCurrentPageOffsetFromCustomContent() { 3721 return getNextPage() - numCustomPages(); 3722 } 3723 3724 /** 3725 * Calculate the nearest cell where the given object would be dropped. 3726 * 3727 * pixelX and pixelY should be in the coordinate system of layout 3728 */ 3729 @Thunk int[] findNearestArea(int pixelX, int pixelY, 3730 int spanX, int spanY, CellLayout layout, int[] recycle) { 3731 return layout.findNearestArea( 3732 pixelX, pixelY, spanX, spanY, recycle); 3733 } 3734 3735 void setup(DragController dragController) { 3736 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3737 mDragController = dragController; 3738 3739 // hardware layers on children are enabled on startup, but should be disabled until 3740 // needed 3741 updateChildrenLayersEnabled(false); 3742 } 3743 3744 /** 3745 * Called at the end of a drag which originated on the workspace. 3746 */ 3747 public void onDropCompleted(final View target, final DragObject d, 3748 final boolean isFlingToDelete, final boolean success) { 3749 if (mDeferDropAfterUninstall) { 3750 mDeferredAction = new Runnable() { 3751 public void run() { 3752 onDropCompleted(target, d, isFlingToDelete, success); 3753 mDeferredAction = null; 3754 } 3755 }; 3756 return; 3757 } 3758 3759 boolean beingCalledAfterUninstall = mDeferredAction != null; 3760 3761 if (success && !(beingCalledAfterUninstall && !mUninstallSuccessful)) { 3762 if (target != this && mDragInfo != null) { 3763 removeWorkspaceItem(mDragInfo.cell); 3764 } 3765 } else if (mDragInfo != null) { 3766 final CellLayout cellLayout = mLauncher.getCellLayout( 3767 mDragInfo.container, mDragInfo.screenId); 3768 if (cellLayout != null) { 3769 cellLayout.onDropChild(mDragInfo.cell); 3770 } else if (ProviderConfig.IS_DOGFOOD_BUILD) { 3771 throw new RuntimeException("Invalid state: cellLayout == null in " 3772 + "Workspace#onDropCompleted. Please file a bug. "); 3773 }; 3774 } 3775 if ((d.cancelled || (beingCalledAfterUninstall && !mUninstallSuccessful)) 3776 && mDragInfo.cell != null) { 3777 mDragInfo.cell.setVisibility(VISIBLE); 3778 } 3779 mDragOutline = null; 3780 mDragInfo = null; 3781 3782 if (!isFlingToDelete) { 3783 // Fling to delete already exits spring loaded mode after the animation finishes. 3784 mLauncher.exitSpringLoadedDragModeDelayed(success, 3785 Launcher.EXIT_SPRINGLOADED_MODE_SHORT_TIMEOUT, mDelayedResizeRunnable); 3786 mDelayedResizeRunnable = null; 3787 } 3788 } 3789 3790 /** 3791 * For opposite operation. See {@link #addInScreen}. 3792 */ 3793 public void removeWorkspaceItem(View v) { 3794 CellLayout parentCell = getParentCellLayoutForView(v); 3795 if (parentCell != null) { 3796 parentCell.removeView(v); 3797 } else if (ProviderConfig.IS_DOGFOOD_BUILD) { 3798 // When an app is uninstalled using the drop target, we wait until resume to remove 3799 // the icon. We also remove all the corresponding items from the workspace at 3800 // {@link Launcher#bindComponentsRemoved}. That call can come before or after 3801 // {@link Launcher#mOnResumeCallbacks} depending on how busy the worker thread is. 3802 Log.e(TAG, "mDragInfo.cell has null parent"); 3803 } 3804 if (v instanceof DropTarget) { 3805 mDragController.removeDropTarget((DropTarget) v); 3806 } 3807 } 3808 3809 /** 3810 * Removes all folder listeners 3811 */ 3812 public void removeFolderListeners() { 3813 mapOverItems(false, new ItemOperator() { 3814 @Override 3815 public boolean evaluate(ItemInfo info, View view) { 3816 if (view instanceof FolderIcon) { 3817 ((FolderIcon) view).removeListeners(); 3818 } 3819 return false; 3820 } 3821 }); 3822 } 3823 3824 @Override 3825 public void deferCompleteDropAfterUninstallActivity() { 3826 mDeferDropAfterUninstall = true; 3827 } 3828 3829 /// maybe move this into a smaller part 3830 @Override 3831 public void onDragObjectRemoved(boolean success) { 3832 mDeferDropAfterUninstall = false; 3833 mUninstallSuccessful = success; 3834 if (mDeferredAction != null) { 3835 mDeferredAction.run(); 3836 } 3837 } 3838 3839 @Override 3840 public float getIntrinsicIconScaleFactor() { 3841 return 1f; 3842 } 3843 3844 @Override 3845 public boolean supportsFlingToDelete() { 3846 return true; 3847 } 3848 3849 @Override 3850 public boolean supportsAppInfoDropTarget() { 3851 return !FeatureFlags.LAUNCHER3_LEGACY_WORKSPACE_DND; 3852 } 3853 3854 @Override 3855 public boolean supportsDeleteDropTarget() { 3856 return true; 3857 } 3858 3859 @Override 3860 public void onFlingToDelete(DragObject d, PointF vec) { 3861 // Do nothing 3862 } 3863 3864 @Override 3865 public void onFlingToDeleteCompleted() { 3866 // Do nothing 3867 } 3868 3869 public boolean isDropEnabled() { 3870 return true; 3871 } 3872 3873 @Override 3874 protected void dispatchRestoreInstanceState(SparseArray<Parcelable> container) { 3875 // We don't dispatch restoreInstanceState to our children using this code path. 3876 // Some pages will be restored immediately as their items are bound immediately, and 3877 // others we will need to wait until after their items are bound. 3878 mSavedStates = container; 3879 } 3880 3881 public void restoreInstanceStateForChild(int child) { 3882 if (mSavedStates != null) { 3883 mRestoredPages.add(child); 3884 CellLayout cl = (CellLayout) getChildAt(child); 3885 if (cl != null) { 3886 cl.restoreInstanceState(mSavedStates); 3887 } 3888 } 3889 } 3890 3891 public void restoreInstanceStateForRemainingPages() { 3892 int count = getChildCount(); 3893 for (int i = 0; i < count; i++) { 3894 if (!mRestoredPages.contains(i)) { 3895 restoreInstanceStateForChild(i); 3896 } 3897 } 3898 mRestoredPages.clear(); 3899 mSavedStates = null; 3900 } 3901 3902 @Override 3903 public void scrollLeft() { 3904 if (!workspaceInModalState() && !mIsSwitchingState) { 3905 super.scrollLeft(); 3906 } 3907 Folder openFolder = getOpenFolder(); 3908 if (openFolder != null) { 3909 openFolder.completeDragExit(); 3910 } 3911 } 3912 3913 @Override 3914 public void scrollRight() { 3915 if (!workspaceInModalState() && !mIsSwitchingState) { 3916 super.scrollRight(); 3917 } 3918 Folder openFolder = getOpenFolder(); 3919 if (openFolder != null) { 3920 openFolder.completeDragExit(); 3921 } 3922 } 3923 3924 @Override 3925 public boolean onEnterScrollArea(int x, int y, int direction) { 3926 // Ignore the scroll area if we are dragging over the hot seat 3927 boolean isPortrait = !mLauncher.getDeviceProfile().isLandscape; 3928 if (mLauncher.getHotseat() != null && isPortrait) { 3929 Rect r = new Rect(); 3930 mLauncher.getHotseat().getHitRect(r); 3931 if (r.contains(x, y)) { 3932 return false; 3933 } 3934 } 3935 3936 boolean result = false; 3937 if (!workspaceInModalState() && !mIsSwitchingState && getOpenFolder() == null) { 3938 mInScrollArea = true; 3939 3940 final int page = getNextPage() + 3941 (direction == DragController.SCROLL_LEFT ? -1 : 1); 3942 // We always want to exit the current layout to ensure parity of enter / exit 3943 setCurrentDropLayout(null); 3944 3945 if (0 <= page && page < getChildCount()) { 3946 // Ensure that we are not dragging over to the custom content screen 3947 if (getScreenIdForPageIndex(page) == CUSTOM_CONTENT_SCREEN_ID) { 3948 return false; 3949 } 3950 3951 CellLayout layout = (CellLayout) getChildAt(page); 3952 setCurrentDragOverlappingLayout(layout); 3953 3954 // Workspace is responsible for drawing the edge glow on adjacent pages, 3955 // so we need to redraw the workspace when this may have changed. 3956 invalidate(); 3957 result = true; 3958 } 3959 } 3960 return result; 3961 } 3962 3963 @Override 3964 public boolean onExitScrollArea() { 3965 boolean result = false; 3966 if (mInScrollArea) { 3967 invalidate(); 3968 CellLayout layout = getCurrentDropLayout(); 3969 setCurrentDropLayout(layout); 3970 setCurrentDragOverlappingLayout(layout); 3971 3972 result = true; 3973 mInScrollArea = false; 3974 } 3975 return result; 3976 } 3977 3978 private void onResetScrollArea() { 3979 setCurrentDragOverlappingLayout(null); 3980 mInScrollArea = false; 3981 } 3982 3983 /** 3984 * Returns a specific CellLayout 3985 */ 3986 CellLayout getParentCellLayoutForView(View v) { 3987 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3988 for (CellLayout layout : layouts) { 3989 if (layout.getShortcutsAndWidgets().indexOfChild(v) > -1) { 3990 return layout; 3991 } 3992 } 3993 return null; 3994 } 3995 3996 /** 3997 * Returns a list of all the CellLayouts in the workspace. 3998 */ 3999 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 4000 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 4001 int screenCount = getChildCount(); 4002 for (int screen = 0; screen < screenCount; screen++) { 4003 layouts.add(((CellLayout) getChildAt(screen))); 4004 } 4005 if (mLauncher.getHotseat() != null) { 4006 layouts.add(mLauncher.getHotseat().getLayout()); 4007 } 4008 return layouts; 4009 } 4010 4011 /** 4012 * We should only use this to search for specific children. Do not use this method to modify 4013 * ShortcutsAndWidgetsContainer directly. Includes ShortcutAndWidgetContainers from 4014 * the hotseat and workspace pages 4015 */ 4016 ArrayList<ShortcutAndWidgetContainer> getAllShortcutAndWidgetContainers() { 4017 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = new ArrayList<>(); 4018 int screenCount = getChildCount(); 4019 for (int screen = 0; screen < screenCount; screen++) { 4020 childrenLayouts.add(((CellLayout) getChildAt(screen)).getShortcutsAndWidgets()); 4021 } 4022 if (mLauncher.getHotseat() != null) { 4023 childrenLayouts.add(mLauncher.getHotseat().getLayout().getShortcutsAndWidgets()); 4024 } 4025 return childrenLayouts; 4026 } 4027 4028 public View getHomescreenIconByItemId(final long id) { 4029 return getFirstMatch(new ItemOperator() { 4030 4031 @Override 4032 public boolean evaluate(ItemInfo info, View v) { 4033 return info != null && info.id == id; 4034 } 4035 }); 4036 } 4037 4038 public View getViewForTag(final Object tag) { 4039 return getFirstMatch(new ItemOperator() { 4040 4041 @Override 4042 public boolean evaluate(ItemInfo info, View v) { 4043 return info == tag; 4044 } 4045 }); 4046 } 4047 4048 public LauncherAppWidgetHostView getWidgetForAppWidgetId(final int appWidgetId) { 4049 return (LauncherAppWidgetHostView) getFirstMatch(new ItemOperator() { 4050 4051 @Override 4052 public boolean evaluate(ItemInfo info, View v) { 4053 return (info instanceof LauncherAppWidgetInfo) && 4054 ((LauncherAppWidgetInfo) info).appWidgetId == appWidgetId; 4055 } 4056 }); 4057 } 4058 4059 public View getFirstMatch(final ItemOperator operator) { 4060 final View[] value = new View[1]; 4061 mapOverItems(MAP_NO_RECURSE, new ItemOperator() { 4062 @Override 4063 public boolean evaluate(ItemInfo info, View v) { 4064 if (operator.evaluate(info, v)) { 4065 value[0] = v; 4066 return true; 4067 } 4068 return false; 4069 } 4070 }); 4071 return value[0]; 4072 } 4073 4074 void clearDropTargets() { 4075 mapOverItems(MAP_NO_RECURSE, new ItemOperator() { 4076 @Override 4077 public boolean evaluate(ItemInfo info, View v) { 4078 if (v instanceof DropTarget) { 4079 mDragController.removeDropTarget((DropTarget) v); 4080 } 4081 // not done, process all the shortcuts 4082 return false; 4083 } 4084 }); 4085 } 4086 4087 // Removes ALL items that match a given package name, this is usually called when a package 4088 // has been removed and we want to remove all components (widgets, shortcuts, apps) that 4089 // belong to that package. 4090 void removeItemsByPackageName(final HashSet<String> packageNames, final UserHandleCompat user) { 4091 // Filter out all the ItemInfos that this is going to affect 4092 final HashSet<ItemInfo> infos = new HashSet<ItemInfo>(); 4093 final HashSet<ComponentName> cns = new HashSet<ComponentName>(); 4094 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 4095 for (CellLayout layoutParent : cellLayouts) { 4096 ViewGroup layout = layoutParent.getShortcutsAndWidgets(); 4097 int childCount = layout.getChildCount(); 4098 for (int i = 0; i < childCount; ++i) { 4099 View view = layout.getChildAt(i); 4100 infos.add((ItemInfo) view.getTag()); 4101 } 4102 } 4103 LauncherModel.ItemInfoFilter filter = new LauncherModel.ItemInfoFilter() { 4104 @Override 4105 public boolean filterItem(ItemInfo parent, ItemInfo info, 4106 ComponentName cn) { 4107 if (packageNames.contains(cn.getPackageName()) 4108 && info.user.equals(user)) { 4109 cns.add(cn); 4110 return true; 4111 } 4112 return false; 4113 } 4114 }; 4115 LauncherModel.filterItemInfos(infos, filter); 4116 4117 // Remove the affected components 4118 removeItemsByComponentName(cns, user); 4119 } 4120 4121 /** 4122 * Removes items that match the item info specified. When applications are removed 4123 * as a part of an update, this is called to ensure that other widgets and application 4124 * shortcuts are not removed. 4125 */ 4126 void removeItemsByComponentName(final HashSet<ComponentName> componentNames, 4127 final UserHandleCompat user) { 4128 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 4129 for (final CellLayout layoutParent: cellLayouts) { 4130 final ViewGroup layout = layoutParent.getShortcutsAndWidgets(); 4131 4132 final HashMap<ItemInfo, View> children = new HashMap<ItemInfo, View>(); 4133 for (int j = 0; j < layout.getChildCount(); j++) { 4134 final View view = layout.getChildAt(j); 4135 children.put((ItemInfo) view.getTag(), view); 4136 } 4137 4138 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 4139 final HashMap<FolderInfo, ArrayList<ShortcutInfo>> folderAppsToRemove = 4140 new HashMap<FolderInfo, ArrayList<ShortcutInfo>>(); 4141 LauncherModel.ItemInfoFilter filter = new LauncherModel.ItemInfoFilter() { 4142 @Override 4143 public boolean filterItem(ItemInfo parent, ItemInfo info, 4144 ComponentName cn) { 4145 if (parent instanceof FolderInfo) { 4146 if (componentNames.contains(cn) && info.user.equals(user)) { 4147 FolderInfo folder = (FolderInfo) parent; 4148 ArrayList<ShortcutInfo> appsToRemove; 4149 if (folderAppsToRemove.containsKey(folder)) { 4150 appsToRemove = folderAppsToRemove.get(folder); 4151 } else { 4152 appsToRemove = new ArrayList<ShortcutInfo>(); 4153 folderAppsToRemove.put(folder, appsToRemove); 4154 } 4155 appsToRemove.add((ShortcutInfo) info); 4156 return true; 4157 } 4158 } else { 4159 if (componentNames.contains(cn) && info.user.equals(user)) { 4160 childrenToRemove.add(children.get(info)); 4161 return true; 4162 } 4163 } 4164 return false; 4165 } 4166 }; 4167 LauncherModel.filterItemInfos(children.keySet(), filter); 4168 4169 // Remove all the apps from their folders 4170 for (FolderInfo folder : folderAppsToRemove.keySet()) { 4171 ArrayList<ShortcutInfo> appsToRemove = folderAppsToRemove.get(folder); 4172 for (ShortcutInfo info : appsToRemove) { 4173 folder.remove(info, false); 4174 } 4175 } 4176 4177 // Remove all the other children 4178 for (View child : childrenToRemove) { 4179 // Note: We can not remove the view directly from CellLayoutChildren as this 4180 // does not re-mark the spaces as unoccupied. 4181 layoutParent.removeViewInLayout(child); 4182 if (child instanceof DropTarget) { 4183 mDragController.removeDropTarget((DropTarget) child); 4184 } 4185 } 4186 4187 if (childrenToRemove.size() > 0) { 4188 layout.requestLayout(); 4189 layout.invalidate(); 4190 } 4191 } 4192 4193 // Strip all the empty screens 4194 stripEmptyScreens(); 4195 } 4196 4197 public interface ItemOperator { 4198 /** 4199 * Process the next itemInfo, possibly with side-effect on {@link ItemOperator#value}. 4200 * 4201 * @param info info for the shortcut 4202 * @param view view for the shortcut 4203 * @return true if done, false to continue the map 4204 */ 4205 public boolean evaluate(ItemInfo info, View view); 4206 } 4207 4208 /** 4209 * Map the operator over the shortcuts and widgets, return the first-non-null value. 4210 * 4211 * @param recurse true: iterate over folder children. false: op get the folders themselves. 4212 * @param op the operator to map over the shortcuts 4213 */ 4214 void mapOverItems(boolean recurse, ItemOperator op) { 4215 ArrayList<ShortcutAndWidgetContainer> containers = getAllShortcutAndWidgetContainers(); 4216 final int containerCount = containers.size(); 4217 for (int containerIdx = 0; containerIdx < containerCount; containerIdx++) { 4218 ShortcutAndWidgetContainer container = containers.get(containerIdx); 4219 // map over all the shortcuts on the workspace 4220 final int itemCount = container.getChildCount(); 4221 for (int itemIdx = 0; itemIdx < itemCount; itemIdx++) { 4222 View item = container.getChildAt(itemIdx); 4223 ItemInfo info = (ItemInfo) item.getTag(); 4224 if (recurse && info instanceof FolderInfo && item instanceof FolderIcon) { 4225 FolderIcon folder = (FolderIcon) item; 4226 ArrayList<View> folderChildren = folder.getFolder().getItemsInReadingOrder(); 4227 // map over all the children in the folder 4228 final int childCount = folderChildren.size(); 4229 for (int childIdx = 0; childIdx < childCount; childIdx++) { 4230 View child = folderChildren.get(childIdx); 4231 info = (ItemInfo) child.getTag(); 4232 if (op.evaluate(info, child)) { 4233 return; 4234 } 4235 } 4236 } else { 4237 if (op.evaluate(info, item)) { 4238 return; 4239 } 4240 } 4241 } 4242 } 4243 } 4244 4245 void updateShortcuts(ArrayList<ShortcutInfo> shortcuts) { 4246 int total = shortcuts.size(); 4247 final HashSet<ShortcutInfo> updates = new HashSet<ShortcutInfo>(total); 4248 final HashSet<Long> folderIds = new HashSet<>(); 4249 4250 for (int i = 0; i < total; i++) { 4251 ShortcutInfo s = shortcuts.get(i); 4252 updates.add(s); 4253 folderIds.add(s.container); 4254 } 4255 4256 mapOverItems(MAP_RECURSE, new ItemOperator() { 4257 @Override 4258 public boolean evaluate(ItemInfo info, View v) { 4259 if (info instanceof ShortcutInfo && v instanceof BubbleTextView && 4260 updates.contains(info)) { 4261 ShortcutInfo si = (ShortcutInfo) info; 4262 BubbleTextView shortcut = (BubbleTextView) v; 4263 Drawable oldIcon = getTextViewIcon(shortcut); 4264 boolean oldPromiseState = (oldIcon instanceof PreloadIconDrawable) 4265 && ((PreloadIconDrawable) oldIcon).hasNotCompleted(); 4266 shortcut.applyFromShortcutInfo(si, mIconCache, 4267 si.isPromise() != oldPromiseState); 4268 } 4269 // process all the shortcuts 4270 return false; 4271 } 4272 }); 4273 4274 // Update folder icons 4275 mapOverItems(MAP_NO_RECURSE, new ItemOperator() { 4276 @Override 4277 public boolean evaluate(ItemInfo info, View v) { 4278 if (info instanceof FolderInfo && folderIds.contains(info.id)) { 4279 ((FolderInfo) info).itemsChanged(false); 4280 } 4281 // process all the shortcuts 4282 return false; 4283 } 4284 }); 4285 } 4286 4287 public void removeAbandonedPromise(String packageName, UserHandleCompat user) { 4288 HashSet<String> packages = new HashSet<>(1); 4289 packages.add(packageName); 4290 LauncherModel.deletePackageFromDatabase(mLauncher, packageName, user); 4291 removeItemsByPackageName(packages, user); 4292 } 4293 4294 public void updateRestoreItems(final HashSet<ItemInfo> updates) { 4295 mapOverItems(MAP_RECURSE, new ItemOperator() { 4296 @Override 4297 public boolean evaluate(ItemInfo info, View v) { 4298 if (info instanceof ShortcutInfo && v instanceof BubbleTextView 4299 && updates.contains(info)) { 4300 ((BubbleTextView) v).applyState(false); 4301 } else if (v instanceof PendingAppWidgetHostView 4302 && info instanceof LauncherAppWidgetInfo 4303 && updates.contains(info)) { 4304 ((PendingAppWidgetHostView) v).applyState(); 4305 } 4306 // process all the shortcuts 4307 return false; 4308 } 4309 }); 4310 } 4311 4312 public void widgetsRestored(final ArrayList<LauncherAppWidgetInfo> changedInfo) { 4313 if (!changedInfo.isEmpty()) { 4314 DeferredWidgetRefresh widgetRefresh = new DeferredWidgetRefresh(changedInfo, 4315 mLauncher.getAppWidgetHost()); 4316 4317 LauncherAppWidgetInfo item = changedInfo.get(0); 4318 final AppWidgetProviderInfo widgetInfo; 4319 if (item.hasRestoreFlag(LauncherAppWidgetInfo.FLAG_ID_NOT_VALID)) { 4320 widgetInfo = AppWidgetManagerCompat 4321 .getInstance(mLauncher).findProvider(item.providerName, item.user); 4322 } else { 4323 widgetInfo = AppWidgetManagerCompat.getInstance(mLauncher) 4324 .getAppWidgetInfo(item.appWidgetId); 4325 } 4326 4327 if (widgetInfo != null) { 4328 // Re-inflate the widgets which have changed status 4329 widgetRefresh.run(); 4330 } else { 4331 // widgetRefresh will automatically run when the packages are updated. 4332 // For now just update the progress bars 4333 mapOverItems(MAP_NO_RECURSE, new ItemOperator() { 4334 @Override 4335 public boolean evaluate(ItemInfo info, View view) { 4336 if (view instanceof PendingAppWidgetHostView 4337 && changedInfo.contains(info)) { 4338 ((LauncherAppWidgetInfo) info).installProgress = 100; 4339 ((PendingAppWidgetHostView) view).applyState(); 4340 } 4341 // process all the shortcuts 4342 return false; 4343 } 4344 }); 4345 } 4346 } 4347 } 4348 4349 private void moveToScreen(int page, boolean animate) { 4350 if (!workspaceInModalState()) { 4351 if (animate) { 4352 snapToPage(page); 4353 } else { 4354 setCurrentPage(page); 4355 } 4356 } 4357 View child = getChildAt(page); 4358 if (child != null) { 4359 child.requestFocus(); 4360 } 4361 } 4362 4363 void moveToDefaultScreen(boolean animate) { 4364 moveToScreen(getDefaultPage(), animate); 4365 } 4366 4367 void moveToCustomContentScreen(boolean animate) { 4368 if (hasCustomContent()) { 4369 int ccIndex = getPageIndexForScreenId(CUSTOM_CONTENT_SCREEN_ID); 4370 if (animate) { 4371 snapToPage(ccIndex); 4372 } else { 4373 setCurrentPage(ccIndex); 4374 } 4375 View child = getChildAt(ccIndex); 4376 if (child != null) { 4377 child.requestFocus(); 4378 } 4379 } 4380 exitWidgetResizeMode(); 4381 } 4382 4383 protected String getPageIndicatorDescription() { 4384 String settings = getResources().getString(R.string.settings_button_text); 4385 return getCurrentPageDescription() + ", " + settings; 4386 } 4387 4388 protected String getCurrentPageDescription() { 4389 if (hasCustomContent() && getNextPage() == 0) { 4390 return mCustomContentDescription; 4391 } 4392 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 4393 return getPageDescription(page); 4394 } 4395 4396 private String getPageDescription(int page) { 4397 int delta = numCustomPages(); 4398 int nScreens = getChildCount() - delta; 4399 int extraScreenId = mScreenOrder.indexOf(EXTRA_EMPTY_SCREEN_ID); 4400 if (extraScreenId >= 0 && nScreens > 1) { 4401 if (page == extraScreenId) { 4402 return getContext().getString(R.string.workspace_new_page); 4403 } 4404 nScreens--; 4405 } 4406 if (nScreens == 0) { 4407 // When the workspace is not loaded, we do not know how many screen will be bound. 4408 return getContext().getString(R.string.all_apps_home_button_label); 4409 } 4410 return getContext().getString(R.string.workspace_scroll_format, 4411 page + 1 - delta, nScreens); 4412 } 4413 4414 @Override 4415 public void fillInLaunchSourceData(View v, ItemInfo info, Target target, Target targetParent) { 4416 target.itemType = LauncherLogProto.APP_ICON; 4417 target.gridX = info.cellX; 4418 target.gridY = info.cellY; 4419 target.pageIndex = getCurrentPage(); 4420 targetParent.containerType = LauncherLogProto.WORKSPACE; 4421 } 4422 4423 /** 4424 * Used as a workaround to ensure that the AppWidgetService receives the 4425 * PACKAGE_ADDED broadcast before updating widgets. 4426 */ 4427 private class DeferredWidgetRefresh implements Runnable { 4428 private final ArrayList<LauncherAppWidgetInfo> mInfos; 4429 private final LauncherAppWidgetHost mHost; 4430 private final Handler mHandler; 4431 4432 private boolean mRefreshPending; 4433 4434 public DeferredWidgetRefresh(ArrayList<LauncherAppWidgetInfo> infos, 4435 LauncherAppWidgetHost host) { 4436 mInfos = infos; 4437 mHost = host; 4438 mHandler = new Handler(); 4439 mRefreshPending = true; 4440 4441 mHost.addProviderChangeListener(this); 4442 // Force refresh after 10 seconds, if we don't get the provider changed event. 4443 // This could happen when the provider is no longer available in the app. 4444 mHandler.postDelayed(this, 10000); 4445 } 4446 4447 @Override 4448 public void run() { 4449 mHost.removeProviderChangeListener(this); 4450 mHandler.removeCallbacks(this); 4451 4452 if (!mRefreshPending) { 4453 return; 4454 } 4455 4456 mRefreshPending = false; 4457 4458 mapOverItems(MAP_NO_RECURSE, new ItemOperator() { 4459 @Override 4460 public boolean evaluate(ItemInfo info, View view) { 4461 if (view instanceof PendingAppWidgetHostView && mInfos.contains(info)) { 4462 PendingAppWidgetHostView hostView = (PendingAppWidgetHostView) view; 4463 mLauncher.removeItem(view, info, false /* deleteFromDb */); 4464 mLauncher.bindAppWidget((LauncherAppWidgetInfo) info); 4465 } 4466 // process all the shortcuts 4467 return false; 4468 } 4469 }); 4470 } 4471 } 4472 4473 public interface OnStateChangeListener { 4474 4475 /** 4476 * Called when the workspace state is changing. 4477 * @param toState final state 4478 * @param targetAnim animation which will be played during the transition or null. 4479 */ 4480 void prepareStateChange(State toState, AnimatorSet targetAnim); 4481 } 4482} 4483