Workspace.java revision a8709ddbbf6338d71625ee1eef96e42bee042b31
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.launcher3; 18 19import android.animation.Animator; 20import android.animation.AnimatorListenerAdapter; 21import android.animation.LayoutTransition; 22import android.animation.ObjectAnimator; 23import android.animation.PropertyValuesHolder; 24import android.annotation.SuppressLint; 25import android.annotation.TargetApi; 26import android.app.WallpaperManager; 27import android.appwidget.AppWidgetHostView; 28import android.appwidget.AppWidgetProviderInfo; 29import android.content.ComponentName; 30import android.content.Context; 31import android.content.SharedPreferences; 32import android.content.res.Resources; 33import android.content.res.TypedArray; 34import android.graphics.Bitmap; 35import android.graphics.Canvas; 36import android.graphics.Matrix; 37import android.graphics.Paint; 38import android.graphics.Point; 39import android.graphics.PointF; 40import android.graphics.Rect; 41import android.graphics.Region.Op; 42import android.graphics.drawable.Drawable; 43import android.os.AsyncTask; 44import android.os.Build; 45import android.os.Bundle; 46import android.os.Handler; 47import android.os.IBinder; 48import android.os.Parcelable; 49import android.util.AttributeSet; 50import android.util.Log; 51import android.util.SparseArray; 52import android.view.Choreographer; 53import android.view.Display; 54import android.view.MotionEvent; 55import android.view.View; 56import android.view.ViewGroup; 57import android.view.accessibility.AccessibilityManager; 58import android.view.animation.DecelerateInterpolator; 59import android.view.animation.Interpolator; 60import android.widget.TextView; 61 62import com.android.launcher3.FolderIcon.FolderRingAnimator; 63import com.android.launcher3.Launcher.CustomContentCallbacks; 64import com.android.launcher3.Launcher.LauncherOverlay; 65import com.android.launcher3.LauncherSettings.Favorites; 66import com.android.launcher3.UninstallDropTarget.UninstallSource; 67import com.android.launcher3.accessibility.LauncherAccessibilityDelegate; 68import com.android.launcher3.accessibility.LauncherAccessibilityDelegate.AccessibilityDragSource; 69import com.android.launcher3.accessibility.OverviewScreenAccessibilityDelegate; 70import com.android.launcher3.accessibility.WorkspaceAccessibilityHelper; 71import com.android.launcher3.compat.UserHandleCompat; 72import com.android.launcher3.util.LongArrayMap; 73import com.android.launcher3.util.Thunk; 74import com.android.launcher3.util.WallpaperUtils; 75import com.android.launcher3.widget.PendingAddShortcutInfo; 76import com.android.launcher3.widget.PendingAddWidgetInfo; 77 78import java.util.ArrayList; 79import java.util.HashMap; 80import java.util.HashSet; 81import java.util.concurrent.atomic.AtomicInteger; 82 83/** 84 * The workspace is a wide area with a wallpaper and a finite number of pages. 85 * Each page contains a number of icons, folders or widgets the user can 86 * interact with. A workspace is meant to be used with a fixed width only. 87 */ 88public class Workspace extends PagedView 89 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 90 DragController.DragListener, LauncherTransitionable, ViewGroup.OnHierarchyChangeListener, 91 Insettable, UninstallSource, AccessibilityDragSource, Stats.LaunchSourceProvider { 92 private static final String TAG = "Launcher.Workspace"; 93 94 private static boolean ENFORCE_DRAG_EVENT_ORDER = false; 95 96 protected static final int SNAP_OFF_EMPTY_SCREEN_DURATION = 400; 97 protected static final int FADE_EMPTY_SCREEN_DURATION = 150; 98 99 private static final int ADJACENT_SCREEN_DROP_DURATION = 300; 100 101 static final boolean MAP_NO_RECURSE = false; 102 static final boolean MAP_RECURSE = true; 103 104 private static final long CUSTOM_CONTENT_GESTURE_DELAY = 200; 105 private long mTouchDownTime = -1; 106 private long mCustomContentShowTime = -1; 107 108 private LayoutTransition mLayoutTransition; 109 @Thunk final WallpaperManager mWallpaperManager; 110 @Thunk IBinder mWindowToken; 111 112 private int mOriginalDefaultPage; 113 private int mDefaultPage; 114 115 private ShortcutAndWidgetContainer mDragSourceInternal; 116 117 // The screen id used for the empty screen always present to the right. 118 final static long EXTRA_EMPTY_SCREEN_ID = -201; 119 private final static long CUSTOM_CONTENT_SCREEN_ID = -301; 120 121 @Thunk LongArrayMap<CellLayout> mWorkspaceScreens = new LongArrayMap<>(); 122 @Thunk ArrayList<Long> mScreenOrder = new ArrayList<Long>(); 123 124 @Thunk Runnable mRemoveEmptyScreenRunnable; 125 @Thunk boolean mDeferRemoveExtraEmptyScreen = false; 126 @Thunk boolean mAddNewPageOnDrag = true; 127 128 /** 129 * CellInfo for the cell that is currently being dragged 130 */ 131 private CellLayout.CellInfo mDragInfo; 132 133 /** 134 * Target drop area calculated during last acceptDrop call. 135 */ 136 @Thunk int[] mTargetCell = new int[2]; 137 private int mDragOverX = -1; 138 private int mDragOverY = -1; 139 140 static Rect mLandscapeCellLayoutMetrics = null; 141 static Rect mPortraitCellLayoutMetrics = null; 142 143 CustomContentCallbacks mCustomContentCallbacks; 144 boolean mCustomContentShowing; 145 private float mLastCustomContentScrollProgress = -1f; 146 private String mCustomContentDescription = ""; 147 148 /** 149 * The CellLayout that is currently being dragged over 150 */ 151 @Thunk CellLayout mDragTargetLayout = null; 152 /** 153 * The CellLayout that we will show as glowing 154 */ 155 private CellLayout mDragOverlappingLayout = null; 156 157 /** 158 * The CellLayout which will be dropped to 159 */ 160 private CellLayout mDropToLayout = null; 161 162 @Thunk Launcher mLauncher; 163 @Thunk IconCache mIconCache; 164 @Thunk DragController mDragController; 165 166 // These are temporary variables to prevent having to allocate a new object just to 167 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 168 private int[] mTempCell = new int[2]; 169 private int[] mTempPt = new int[2]; 170 private int[] mTempEstimate = new int[2]; 171 @Thunk float[] mDragViewVisualCenter = new float[2]; 172 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 173 private Matrix mTempInverseMatrix = new Matrix(); 174 175 private SpringLoadedDragController mSpringLoadedDragController; 176 private float mSpringLoadedShrinkFactor; 177 private float mOverviewModeShrinkFactor; 178 179 // State variable that indicates whether the pages are small (ie when you're 180 // in all apps or customize mode) 181 182 enum State { 183 NORMAL (SearchDropTargetBar.State.SEARCH_BAR), 184 NORMAL_HIDDEN (SearchDropTargetBar.State.INVISIBLE), 185 SPRING_LOADED (SearchDropTargetBar.State.DROP_TARGET), 186 OVERVIEW (SearchDropTargetBar.State.INVISIBLE), 187 OVERVIEW_HIDDEN (SearchDropTargetBar.State.INVISIBLE); 188 189 private final SearchDropTargetBar.State mBarState; 190 191 State(SearchDropTargetBar.State searchBarState) { 192 mBarState = searchBarState; 193 } 194 195 public SearchDropTargetBar.State getSearchDropTargetBarState() { 196 return mBarState; 197 } 198 }; 199 200 private State mState = State.NORMAL; 201 private boolean mIsSwitchingState = false; 202 203 boolean mAnimatingViewIntoPlace = false; 204 boolean mIsDragOccuring = false; 205 boolean mChildrenLayersEnabled = true; 206 207 private boolean mStripScreensOnPageStopMoving = false; 208 209 /** Is the user is dragging an item near the edge of a page? */ 210 private boolean mInScrollArea = false; 211 212 private HolographicOutlineHelper mOutlineHelper; 213 @Thunk Bitmap mDragOutline = null; 214 private static final Rect sTempRect = new Rect(); 215 private final int[] mTempXY = new int[2]; 216 private int[] mTempVisiblePagesRange = new int[2]; 217 public static final int DRAG_BITMAP_PADDING = 2; 218 private boolean mWorkspaceFadeInAdjacentScreens; 219 220 WallpaperOffsetInterpolator mWallpaperOffset; 221 @Thunk boolean mWallpaperIsLiveWallpaper; 222 @Thunk int mNumPagesForWallpaperParallax; 223 @Thunk float mLastSetWallpaperOffsetSteps = 0; 224 225 @Thunk Runnable mDelayedResizeRunnable; 226 private Runnable mDelayedSnapToPageRunnable; 227 private Point mDisplaySize = new Point(); 228 229 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 230 private static final int FOLDER_CREATION_TIMEOUT = 0; 231 public static final int REORDER_TIMEOUT = 350; 232 private final Alarm mFolderCreationAlarm = new Alarm(); 233 private final Alarm mReorderAlarm = new Alarm(); 234 @Thunk FolderRingAnimator mDragFolderRingAnimator = null; 235 private FolderIcon mDragOverFolderIcon = null; 236 private boolean mCreateUserFolderOnDrop = false; 237 private boolean mAddToExistingFolderOnDrop = false; 238 private float mMaxDistanceForFolderCreation; 239 240 private final Canvas mCanvas = new Canvas(); 241 242 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 243 private float mXDown; 244 private float mYDown; 245 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 246 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 247 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 248 249 // Relating to the animation of items being dropped externally 250 public static final int ANIMATE_INTO_POSITION_AND_DISAPPEAR = 0; 251 public static final int ANIMATE_INTO_POSITION_AND_REMAIN = 1; 252 public static final int ANIMATE_INTO_POSITION_AND_RESIZE = 2; 253 public static final int COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION = 3; 254 public static final int CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION = 4; 255 256 // Related to dragging, folder creation and reordering 257 private static final int DRAG_MODE_NONE = 0; 258 private static final int DRAG_MODE_CREATE_FOLDER = 1; 259 private static final int DRAG_MODE_ADD_TO_FOLDER = 2; 260 private static final int DRAG_MODE_REORDER = 3; 261 private int mDragMode = DRAG_MODE_NONE; 262 @Thunk int mLastReorderX = -1; 263 @Thunk int mLastReorderY = -1; 264 265 private SparseArray<Parcelable> mSavedStates; 266 private final ArrayList<Integer> mRestoredPages = new ArrayList<Integer>(); 267 268 private float mCurrentScale; 269 private float mTransitionProgress; 270 271 @Thunk Runnable mDeferredAction; 272 private boolean mDeferDropAfterUninstall; 273 private boolean mUninstallSuccessful; 274 275 // State related to Launcher Overlay 276 LauncherOverlay mLauncherOverlay; 277 boolean mScrollInteractionBegan; 278 boolean mStartedSendingScrollEvents; 279 boolean mShouldSendPageSettled; 280 int mLastOverlaySroll = 0; 281 282 // Handles workspace state transitions 283 private WorkspaceStateTransitionAnimation mStateTransitionAnimation; 284 285 private AccessibilityDelegate mPagesAccessibilityDelegate; 286 287 private final Runnable mBindPages = new Runnable() { 288 @Override 289 public void run() { 290 mLauncher.getModel().bindRemainingSynchronousPages(); 291 } 292 }; 293 294 /** 295 * Used to inflate the Workspace from XML. 296 * 297 * @param context The application's context. 298 * @param attrs The attributes set containing the Workspace's customization values. 299 */ 300 public Workspace(Context context, AttributeSet attrs) { 301 this(context, attrs, 0); 302 } 303 304 /** 305 * Used to inflate the Workspace from XML. 306 * 307 * @param context The application's context. 308 * @param attrs The attributes set containing the Workspace's customization values. 309 * @param defStyle Unused. 310 */ 311 public Workspace(Context context, AttributeSet attrs, int defStyle) { 312 super(context, attrs, defStyle); 313 314 mOutlineHelper = HolographicOutlineHelper.obtain(context); 315 316 mLauncher = (Launcher) context; 317 mStateTransitionAnimation = new WorkspaceStateTransitionAnimation(mLauncher, this); 318 final Resources res = getResources(); 319 DeviceProfile grid = mLauncher.getDeviceProfile(); 320 mWorkspaceFadeInAdjacentScreens = grid.shouldFadeAdjacentWorkspaceScreens(); 321 mFadeInAdjacentScreens = false; 322 mWallpaperManager = WallpaperManager.getInstance(context); 323 324 TypedArray a = context.obtainStyledAttributes(attrs, 325 R.styleable.Workspace, defStyle, 0); 326 mSpringLoadedShrinkFactor = 327 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 328 mOverviewModeShrinkFactor = 329 res.getInteger(R.integer.config_workspaceOverviewShrinkPercentage) / 100f; 330 mOriginalDefaultPage = mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 331 a.recycle(); 332 333 setOnHierarchyChangeListener(this); 334 setHapticFeedbackEnabled(false); 335 336 initWorkspace(); 337 338 // Disable multitouch across the workspace/all apps/customize tray 339 setMotionEventSplittingEnabled(true); 340 } 341 342 @Override 343 public void setInsets(Rect insets) { 344 mInsets.set(insets); 345 346 CellLayout customScreen = getScreenWithId(CUSTOM_CONTENT_SCREEN_ID); 347 if (customScreen != null) { 348 View customContent = customScreen.getShortcutsAndWidgets().getChildAt(0); 349 if (customContent instanceof Insettable) { 350 ((Insettable) customContent).setInsets(mInsets); 351 } 352 } 353 } 354 355 // estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each 356 // dimension if unsuccessful 357 public int[] estimateItemSize(ItemInfo itemInfo, boolean springLoaded) { 358 int[] size = new int[2]; 359 if (getChildCount() > 0) { 360 // Use the first non-custom page to estimate the child position 361 CellLayout cl = (CellLayout) getChildAt(numCustomPages()); 362 Rect r = estimateItemPosition(cl, itemInfo, 0, 0, itemInfo.spanX, itemInfo.spanY); 363 size[0] = r.width(); 364 size[1] = r.height(); 365 if (springLoaded) { 366 size[0] *= mSpringLoadedShrinkFactor; 367 size[1] *= mSpringLoadedShrinkFactor; 368 } 369 return size; 370 } else { 371 size[0] = Integer.MAX_VALUE; 372 size[1] = Integer.MAX_VALUE; 373 return size; 374 } 375 } 376 377 public Rect estimateItemPosition(CellLayout cl, ItemInfo pendingInfo, 378 int hCell, int vCell, int hSpan, int vSpan) { 379 Rect r = new Rect(); 380 cl.cellToRect(hCell, vCell, hSpan, vSpan, r); 381 return r; 382 } 383 384 @Override 385 public void onDragStart(final DragSource source, Object info, int dragAction) { 386 if (ENFORCE_DRAG_EVENT_ORDER) { 387 enfoceDragParity("onDragStart", 0, 0); 388 } 389 390 mIsDragOccuring = true; 391 updateChildrenLayersEnabled(false); 392 mLauncher.lockScreenOrientation(); 393 mLauncher.onInteractionBegin(); 394 // Prevent any Un/InstallShortcutReceivers from updating the db while we are dragging 395 InstallShortcutReceiver.enableInstallQueue(); 396 397 if (mAddNewPageOnDrag) { 398 mDeferRemoveExtraEmptyScreen = false; 399 addExtraEmptyScreenOnDrag(); 400 } 401 } 402 403 public void setAddNewPageOnDrag(boolean addPage) { 404 mAddNewPageOnDrag = addPage; 405 } 406 407 public void deferRemoveExtraEmptyScreen() { 408 mDeferRemoveExtraEmptyScreen = true; 409 } 410 411 @Override 412 public void onDragEnd() { 413 if (ENFORCE_DRAG_EVENT_ORDER) { 414 enfoceDragParity("onDragEnd", 0, 0); 415 } 416 417 if (!mDeferRemoveExtraEmptyScreen) { 418 removeExtraEmptyScreen(true, mDragSourceInternal != null); 419 } 420 421 mIsDragOccuring = false; 422 updateChildrenLayersEnabled(false); 423 mLauncher.unlockScreenOrientation(false); 424 425 // Re-enable any Un/InstallShortcutReceiver and now process any queued items 426 InstallShortcutReceiver.disableAndFlushInstallQueue(getContext()); 427 428 mDragSourceInternal = null; 429 mLauncher.onInteractionEnd(); 430 } 431 432 /** 433 * Initializes various states for this workspace. 434 */ 435 protected void initWorkspace() { 436 mCurrentPage = mDefaultPage; 437 LauncherAppState app = LauncherAppState.getInstance(); 438 DeviceProfile grid = mLauncher.getDeviceProfile(); 439 mIconCache = app.getIconCache(); 440 setWillNotDraw(false); 441 setClipChildren(false); 442 setClipToPadding(false); 443 setChildrenDrawnWithCacheEnabled(true); 444 445 setMinScale(mOverviewModeShrinkFactor); 446 setupLayoutTransition(); 447 448 mWallpaperOffset = new WallpaperOffsetInterpolator(); 449 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 450 display.getSize(mDisplaySize); 451 452 mMaxDistanceForFolderCreation = (0.55f * grid.iconSizePx); 453 454 // Set the wallpaper dimensions when Launcher starts up 455 setWallpaperDimension(); 456 457 setEdgeGlowColor(getResources().getColor(R.color.workspace_edge_effect_color)); 458 mIgnoreRightInset = app.getInvariantDeviceProfile().isRightInsetOpaque; 459 } 460 461 private void setupLayoutTransition() { 462 // We want to show layout transitions when pages are deleted, to close the gap. 463 mLayoutTransition = new LayoutTransition(); 464 mLayoutTransition.enableTransitionType(LayoutTransition.DISAPPEARING); 465 mLayoutTransition.enableTransitionType(LayoutTransition.CHANGE_DISAPPEARING); 466 mLayoutTransition.disableTransitionType(LayoutTransition.APPEARING); 467 mLayoutTransition.disableTransitionType(LayoutTransition.CHANGE_APPEARING); 468 setLayoutTransition(mLayoutTransition); 469 } 470 471 void enableLayoutTransitions() { 472 setLayoutTransition(mLayoutTransition); 473 } 474 void disableLayoutTransitions() { 475 setLayoutTransition(null); 476 } 477 478 @Override 479 public void onChildViewAdded(View parent, View child) { 480 if (!(child instanceof CellLayout)) { 481 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 482 } 483 CellLayout cl = ((CellLayout) child); 484 cl.setOnInterceptTouchListener(this); 485 cl.setClickable(true); 486 cl.setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_NO); 487 super.onChildViewAdded(parent, child); 488 } 489 490 protected boolean shouldDrawChild(View child) { 491 final CellLayout cl = (CellLayout) child; 492 return super.shouldDrawChild(child) && 493 (mIsSwitchingState || 494 cl.getShortcutsAndWidgets().getAlpha() > 0 || 495 cl.getBackgroundAlpha() > 0); 496 } 497 498 /** 499 * @return The open folder on the current screen, or null if there is none 500 */ 501 public Folder getOpenFolder() { 502 DragLayer dragLayer = mLauncher.getDragLayer(); 503 int count = dragLayer.getChildCount(); 504 for (int i = 0; i < count; i++) { 505 View child = dragLayer.getChildAt(i); 506 if (child instanceof Folder) { 507 Folder folder = (Folder) child; 508 if (folder.getInfo().opened) 509 return folder; 510 } 511 } 512 return null; 513 } 514 515 boolean isTouchActive() { 516 return mTouchState != TOUCH_STATE_REST; 517 } 518 519 public void removeAllWorkspaceScreens() { 520 // Disable all layout transitions before removing all pages to ensure that we don't get the 521 // transition animations competing with us changing the scroll when we add pages or the 522 // custom content screen 523 disableLayoutTransitions(); 524 525 // Since we increment the current page when we call addCustomContentPage via bindScreens 526 // (and other places), we need to adjust the current page back when we clear the pages 527 if (hasCustomContent()) { 528 removeCustomContentPage(); 529 } 530 531 // Remove the pages and clear the screen models 532 removeAllViews(); 533 mScreenOrder.clear(); 534 mWorkspaceScreens.clear(); 535 536 // Re-enable the layout transitions 537 enableLayoutTransitions(); 538 } 539 540 public long insertNewWorkspaceScreenBeforeEmptyScreen(long screenId) { 541 // Find the index to insert this view into. If the empty screen exists, then 542 // insert it before that. 543 int insertIndex = mScreenOrder.indexOf(EXTRA_EMPTY_SCREEN_ID); 544 if (insertIndex < 0) { 545 insertIndex = mScreenOrder.size(); 546 } 547 return insertNewWorkspaceScreen(screenId, insertIndex); 548 } 549 550 public long insertNewWorkspaceScreen(long screenId) { 551 return insertNewWorkspaceScreen(screenId, getChildCount()); 552 } 553 554 public long insertNewWorkspaceScreen(long screenId, int insertIndex) { 555 if (mWorkspaceScreens.containsKey(screenId)) { 556 throw new RuntimeException("Screen id " + screenId + " already exists!"); 557 } 558 559 // Inflate the cell layout, but do not add it automatically so that we can get the newly 560 // created CellLayout. 561 CellLayout newScreen = (CellLayout) mLauncher.getLayoutInflater().inflate( 562 R.layout.workspace_screen, this, false /* attachToRoot */); 563 564 newScreen.setOnLongClickListener(mLongClickListener); 565 newScreen.setOnClickListener(mLauncher); 566 newScreen.setSoundEffectsEnabled(false); 567 mWorkspaceScreens.put(screenId, newScreen); 568 mScreenOrder.add(insertIndex, screenId); 569 addView(newScreen, insertIndex); 570 571 LauncherAccessibilityDelegate delegate = 572 LauncherAppState.getInstance().getAccessibilityDelegate(); 573 if (delegate != null && delegate.isInAccessibleDrag()) { 574 newScreen.enableAccessibleDrag(true, CellLayout.WORKSPACE_ACCESSIBILITY_DRAG); 575 } 576 return screenId; 577 } 578 579 public void createCustomContentContainer() { 580 CellLayout customScreen = (CellLayout) 581 mLauncher.getLayoutInflater().inflate(R.layout.workspace_screen, this, false); 582 customScreen.disableDragTarget(); 583 customScreen.disableJailContent(); 584 585 mWorkspaceScreens.put(CUSTOM_CONTENT_SCREEN_ID, customScreen); 586 mScreenOrder.add(0, CUSTOM_CONTENT_SCREEN_ID); 587 588 // We want no padding on the custom content 589 customScreen.setPadding(0, 0, 0, 0); 590 591 addFullScreenPage(customScreen); 592 593 // Ensure that the current page and default page are maintained. 594 mDefaultPage = mOriginalDefaultPage + 1; 595 596 // Update the custom content hint 597 if (mRestorePage != INVALID_RESTORE_PAGE) { 598 mRestorePage = mRestorePage + 1; 599 } else { 600 setCurrentPage(getCurrentPage() + 1); 601 } 602 } 603 604 public void removeCustomContentPage() { 605 CellLayout customScreen = getScreenWithId(CUSTOM_CONTENT_SCREEN_ID); 606 if (customScreen == null) { 607 throw new RuntimeException("Expected custom content screen to exist"); 608 } 609 610 mWorkspaceScreens.remove(CUSTOM_CONTENT_SCREEN_ID); 611 mScreenOrder.remove(CUSTOM_CONTENT_SCREEN_ID); 612 removeView(customScreen); 613 614 if (mCustomContentCallbacks != null) { 615 mCustomContentCallbacks.onScrollProgressChanged(0); 616 mCustomContentCallbacks.onHide(); 617 } 618 619 mCustomContentCallbacks = null; 620 621 // Ensure that the current page and default page are maintained. 622 mDefaultPage = mOriginalDefaultPage - 1; 623 624 // Update the custom content hint 625 if (mRestorePage != INVALID_RESTORE_PAGE) { 626 mRestorePage = mRestorePage - 1; 627 } else { 628 setCurrentPage(getCurrentPage() - 1); 629 } 630 } 631 632 public void addToCustomContentPage(View customContent, CustomContentCallbacks callbacks, 633 String description) { 634 if (getPageIndexForScreenId(CUSTOM_CONTENT_SCREEN_ID) < 0) { 635 throw new RuntimeException("Expected custom content screen to exist"); 636 } 637 638 // Add the custom content to the full screen custom page 639 CellLayout customScreen = getScreenWithId(CUSTOM_CONTENT_SCREEN_ID); 640 int spanX = customScreen.getCountX(); 641 int spanY = customScreen.getCountY(); 642 CellLayout.LayoutParams lp = new CellLayout.LayoutParams(0, 0, spanX, spanY); 643 lp.canReorder = false; 644 lp.isFullscreen = true; 645 if (customContent instanceof Insettable) { 646 ((Insettable)customContent).setInsets(mInsets); 647 } 648 649 // Verify that the child is removed from any existing parent. 650 if (customContent.getParent() instanceof ViewGroup) { 651 ViewGroup parent = (ViewGroup) customContent.getParent(); 652 parent.removeView(customContent); 653 } 654 customScreen.removeAllViews(); 655 customScreen.addViewToCellLayout(customContent, 0, 0, lp, true); 656 mCustomContentDescription = description; 657 658 mCustomContentCallbacks = callbacks; 659 } 660 661 public void addExtraEmptyScreenOnDrag() { 662 boolean lastChildOnScreen = false; 663 boolean childOnFinalScreen = false; 664 665 // Cancel any pending removal of empty screen 666 mRemoveEmptyScreenRunnable = null; 667 668 if (mDragSourceInternal != null) { 669 if (mDragSourceInternal.getChildCount() == 1) { 670 lastChildOnScreen = true; 671 } 672 CellLayout cl = (CellLayout) mDragSourceInternal.getParent(); 673 if (indexOfChild(cl) == getChildCount() - 1) { 674 childOnFinalScreen = true; 675 } 676 } 677 678 // If this is the last item on the final screen 679 if (lastChildOnScreen && childOnFinalScreen) { 680 return; 681 } 682 if (!mWorkspaceScreens.containsKey(EXTRA_EMPTY_SCREEN_ID)) { 683 insertNewWorkspaceScreen(EXTRA_EMPTY_SCREEN_ID); 684 } 685 } 686 687 public boolean addExtraEmptyScreen() { 688 if (!mWorkspaceScreens.containsKey(EXTRA_EMPTY_SCREEN_ID)) { 689 insertNewWorkspaceScreen(EXTRA_EMPTY_SCREEN_ID); 690 return true; 691 } 692 return false; 693 } 694 695 private void convertFinalScreenToEmptyScreenIfNecessary() { 696 if (mLauncher.isWorkspaceLoading()) { 697 // Invalid and dangerous operation if workspace is loading 698 Launcher.addDumpLog(TAG, " - workspace loading, skip", true); 699 return; 700 } 701 702 if (hasExtraEmptyScreen() || mScreenOrder.size() == 0) return; 703 long finalScreenId = mScreenOrder.get(mScreenOrder.size() - 1); 704 705 if (finalScreenId == CUSTOM_CONTENT_SCREEN_ID) return; 706 CellLayout finalScreen = mWorkspaceScreens.get(finalScreenId); 707 708 // If the final screen is empty, convert it to the extra empty screen 709 if (finalScreen.getShortcutsAndWidgets().getChildCount() == 0 && 710 !finalScreen.isDropPending()) { 711 mWorkspaceScreens.remove(finalScreenId); 712 mScreenOrder.remove(finalScreenId); 713 714 // if this is the last non-custom content screen, convert it to the empty screen 715 mWorkspaceScreens.put(EXTRA_EMPTY_SCREEN_ID, finalScreen); 716 mScreenOrder.add(EXTRA_EMPTY_SCREEN_ID); 717 718 // Update the model if we have changed any screens 719 mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); 720 } 721 } 722 723 public void removeExtraEmptyScreen(final boolean animate, boolean stripEmptyScreens) { 724 removeExtraEmptyScreenDelayed(animate, null, 0, stripEmptyScreens); 725 } 726 727 public void removeExtraEmptyScreenDelayed(final boolean animate, final Runnable onComplete, 728 final int delay, final boolean stripEmptyScreens) { 729 if (mLauncher.isWorkspaceLoading()) { 730 // Don't strip empty screens if the workspace is still loading 731 Launcher.addDumpLog(TAG, " - workspace loading, skip", true); 732 return; 733 } 734 735 if (delay > 0) { 736 postDelayed(new Runnable() { 737 @Override 738 public void run() { 739 removeExtraEmptyScreenDelayed(animate, onComplete, 0, stripEmptyScreens); 740 } 741 }, delay); 742 return; 743 } 744 745 convertFinalScreenToEmptyScreenIfNecessary(); 746 if (hasExtraEmptyScreen()) { 747 int emptyIndex = mScreenOrder.indexOf(EXTRA_EMPTY_SCREEN_ID); 748 if (getNextPage() == emptyIndex) { 749 snapToPage(getNextPage() - 1, SNAP_OFF_EMPTY_SCREEN_DURATION); 750 fadeAndRemoveEmptyScreen(SNAP_OFF_EMPTY_SCREEN_DURATION, FADE_EMPTY_SCREEN_DURATION, 751 onComplete, stripEmptyScreens); 752 } else { 753 snapToPage(getNextPage(), 0); 754 fadeAndRemoveEmptyScreen(0, FADE_EMPTY_SCREEN_DURATION, 755 onComplete, stripEmptyScreens); 756 } 757 return; 758 } else if (stripEmptyScreens) { 759 // If we're not going to strip the empty screens after removing 760 // the extra empty screen, do it right away. 761 stripEmptyScreens(); 762 } 763 764 if (onComplete != null) { 765 onComplete.run(); 766 } 767 } 768 769 private void fadeAndRemoveEmptyScreen(int delay, int duration, final Runnable onComplete, 770 final boolean stripEmptyScreens) { 771 // XXX: Do we need to update LM workspace screens below? 772 PropertyValuesHolder alpha = PropertyValuesHolder.ofFloat("alpha", 0f); 773 PropertyValuesHolder bgAlpha = PropertyValuesHolder.ofFloat("backgroundAlpha", 0f); 774 775 final CellLayout cl = mWorkspaceScreens.get(EXTRA_EMPTY_SCREEN_ID); 776 777 mRemoveEmptyScreenRunnable = new Runnable() { 778 @Override 779 public void run() { 780 if (hasExtraEmptyScreen()) { 781 mWorkspaceScreens.remove(EXTRA_EMPTY_SCREEN_ID); 782 mScreenOrder.remove(EXTRA_EMPTY_SCREEN_ID); 783 removeView(cl); 784 if (stripEmptyScreens) { 785 stripEmptyScreens(); 786 } 787 } 788 } 789 }; 790 791 ObjectAnimator oa = ObjectAnimator.ofPropertyValuesHolder(cl, alpha, bgAlpha); 792 oa.setDuration(duration); 793 oa.setStartDelay(delay); 794 oa.addListener(new AnimatorListenerAdapter() { 795 @Override 796 public void onAnimationEnd(Animator animation) { 797 if (mRemoveEmptyScreenRunnable != null) { 798 mRemoveEmptyScreenRunnable.run(); 799 } 800 if (onComplete != null) { 801 onComplete.run(); 802 } 803 } 804 }); 805 oa.start(); 806 } 807 808 public boolean hasExtraEmptyScreen() { 809 int nScreens = getChildCount(); 810 nScreens = nScreens - numCustomPages(); 811 return mWorkspaceScreens.containsKey(EXTRA_EMPTY_SCREEN_ID) && nScreens > 1; 812 } 813 814 public long commitExtraEmptyScreen() { 815 if (mLauncher.isWorkspaceLoading()) { 816 // Invalid and dangerous operation if workspace is loading 817 Launcher.addDumpLog(TAG, " - workspace loading, skip", true); 818 return -1; 819 } 820 821 int index = getPageIndexForScreenId(EXTRA_EMPTY_SCREEN_ID); 822 CellLayout cl = mWorkspaceScreens.get(EXTRA_EMPTY_SCREEN_ID); 823 mWorkspaceScreens.remove(EXTRA_EMPTY_SCREEN_ID); 824 mScreenOrder.remove(EXTRA_EMPTY_SCREEN_ID); 825 826 long newId = LauncherAppState.getLauncherProvider().generateNewScreenId(); 827 mWorkspaceScreens.put(newId, cl); 828 mScreenOrder.add(newId); 829 830 // Update the page indicator marker 831 if (getPageIndicator() != null) { 832 getPageIndicator().updateMarker(index, getPageIndicatorMarker(index)); 833 } 834 835 // Update the model for the new screen 836 mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); 837 838 return newId; 839 } 840 841 public CellLayout getScreenWithId(long screenId) { 842 CellLayout layout = mWorkspaceScreens.get(screenId); 843 return layout; 844 } 845 846 public long getIdForScreen(CellLayout layout) { 847 int index = mWorkspaceScreens.indexOfValue(layout); 848 if (index != -1) { 849 return mWorkspaceScreens.keyAt(index); 850 } 851 return -1; 852 } 853 854 public int getPageIndexForScreenId(long screenId) { 855 return indexOfChild(mWorkspaceScreens.get(screenId)); 856 } 857 858 public long getScreenIdForPageIndex(int index) { 859 if (0 <= index && index < mScreenOrder.size()) { 860 return mScreenOrder.get(index); 861 } 862 return -1; 863 } 864 865 public ArrayList<Long> getScreenOrder() { 866 return mScreenOrder; 867 } 868 869 public void stripEmptyScreens() { 870 if (mLauncher.isWorkspaceLoading()) { 871 // Don't strip empty screens if the workspace is still loading. 872 // This is dangerous and can result in data loss. 873 Launcher.addDumpLog(TAG, " - workspace loading, skip", true); 874 return; 875 } 876 877 if (isPageMoving()) { 878 mStripScreensOnPageStopMoving = true; 879 return; 880 } 881 882 int currentPage = getNextPage(); 883 ArrayList<Long> removeScreens = new ArrayList<Long>(); 884 int total = mWorkspaceScreens.size(); 885 for (int i = 0; i < total; i++) { 886 long id = mWorkspaceScreens.keyAt(i); 887 CellLayout cl = mWorkspaceScreens.valueAt(i); 888 if (id >= 0 && cl.getShortcutsAndWidgets().getChildCount() == 0) { 889 removeScreens.add(id); 890 } 891 } 892 893 LauncherAccessibilityDelegate delegate = 894 LauncherAppState.getInstance().getAccessibilityDelegate(); 895 896 // We enforce at least one page to add new items to. In the case that we remove the last 897 // such screen, we convert the last screen to the empty screen 898 int minScreens = 1 + numCustomPages(); 899 900 int pageShift = 0; 901 for (Long id: removeScreens) { 902 CellLayout cl = mWorkspaceScreens.get(id); 903 mWorkspaceScreens.remove(id); 904 mScreenOrder.remove(id); 905 906 if (getChildCount() > minScreens) { 907 if (indexOfChild(cl) < currentPage) { 908 pageShift++; 909 } 910 911 if (delegate != null && delegate.isInAccessibleDrag()) { 912 cl.enableAccessibleDrag(false, CellLayout.WORKSPACE_ACCESSIBILITY_DRAG); 913 } 914 915 removeView(cl); 916 } else { 917 // if this is the last non-custom content screen, convert it to the empty screen 918 mRemoveEmptyScreenRunnable = null; 919 mWorkspaceScreens.put(EXTRA_EMPTY_SCREEN_ID, cl); 920 mScreenOrder.add(EXTRA_EMPTY_SCREEN_ID); 921 } 922 } 923 924 if (!removeScreens.isEmpty()) { 925 // Update the model if we have changed any screens 926 mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); 927 } 928 929 if (pageShift >= 0) { 930 setCurrentPage(currentPage - pageShift); 931 } 932 } 933 934 // See implementation for parameter definition. 935 void addInScreen(View child, long container, long screenId, 936 int x, int y, int spanX, int spanY) { 937 addInScreen(child, container, screenId, x, y, spanX, spanY, false, false); 938 } 939 940 // At bind time, we use the rank (screenId) to compute x and y for hotseat items. 941 // See implementation for parameter definition. 942 void addInScreenFromBind(View child, long container, long screenId, int x, int y, 943 int spanX, int spanY) { 944 addInScreen(child, container, screenId, x, y, spanX, spanY, false, true); 945 } 946 947 // See implementation for parameter definition. 948 void addInScreen(View child, long container, long screenId, int x, int y, int spanX, int spanY, 949 boolean insert) { 950 addInScreen(child, container, screenId, x, y, spanX, spanY, insert, false); 951 } 952 953 /** 954 * Adds the specified child in the specified screen. The position and dimension of 955 * the child are defined by x, y, spanX and spanY. 956 * 957 * @param child The child to add in one of the workspace's screens. 958 * @param screenId The screen in which to add the child. 959 * @param x The X position of the child in the screen's grid. 960 * @param y The Y position of the child in the screen's grid. 961 * @param spanX The number of cells spanned horizontally by the child. 962 * @param spanY The number of cells spanned vertically by the child. 963 * @param insert When true, the child is inserted at the beginning of the children list. 964 * @param computeXYFromRank When true, we use the rank (stored in screenId) to compute 965 * the x and y position in which to place hotseat items. Otherwise 966 * we use the x and y position to compute the rank. 967 */ 968 void addInScreen(View child, long container, long screenId, int x, int y, int spanX, int spanY, 969 boolean insert, boolean computeXYFromRank) { 970 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 971 if (getScreenWithId(screenId) == null) { 972 Log.e(TAG, "Skipping child, screenId " + screenId + " not found"); 973 // DEBUGGING - Print out the stack trace to see where we are adding from 974 new Throwable().printStackTrace(); 975 return; 976 } 977 } 978 if (screenId == EXTRA_EMPTY_SCREEN_ID) { 979 // This should never happen 980 throw new RuntimeException("Screen id should not be EXTRA_EMPTY_SCREEN_ID"); 981 } 982 983 final CellLayout layout; 984 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 985 layout = mLauncher.getHotseat().getLayout(); 986 child.setOnKeyListener(new HotseatIconKeyEventListener()); 987 988 // Hide folder title in the hotseat 989 if (child instanceof FolderIcon) { 990 ((FolderIcon) child).setTextVisible(false); 991 } 992 993 if (computeXYFromRank) { 994 x = mLauncher.getHotseat().getCellXFromOrder((int) screenId); 995 y = mLauncher.getHotseat().getCellYFromOrder((int) screenId); 996 } else { 997 screenId = mLauncher.getHotseat().getOrderInHotseat(x, y); 998 } 999 } else { 1000 // Show folder title if not in the hotseat 1001 if (child instanceof FolderIcon) { 1002 ((FolderIcon) child).setTextVisible(true); 1003 } 1004 layout = getScreenWithId(screenId); 1005 child.setOnKeyListener(new IconKeyEventListener()); 1006 } 1007 1008 ViewGroup.LayoutParams genericLp = child.getLayoutParams(); 1009 CellLayout.LayoutParams lp; 1010 if (genericLp == null || !(genericLp instanceof CellLayout.LayoutParams)) { 1011 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 1012 } else { 1013 lp = (CellLayout.LayoutParams) genericLp; 1014 lp.cellX = x; 1015 lp.cellY = y; 1016 lp.cellHSpan = spanX; 1017 lp.cellVSpan = spanY; 1018 } 1019 1020 if (spanX < 0 && spanY < 0) { 1021 lp.isLockedToGrid = false; 1022 } 1023 1024 // Get the canonical child id to uniquely represent this view in this screen 1025 ItemInfo info = (ItemInfo) child.getTag(); 1026 int childId = mLauncher.getViewIdForItem(info); 1027 1028 boolean markCellsAsOccupied = !(child instanceof Folder); 1029 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 1030 // TODO: This branch occurs when the workspace is adding views 1031 // outside of the defined grid 1032 // maybe we should be deleting these items from the LauncherModel? 1033 Launcher.addDumpLog(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout", true); 1034 } 1035 1036 if (!(child instanceof Folder)) { 1037 child.setHapticFeedbackEnabled(false); 1038 child.setOnLongClickListener(mLongClickListener); 1039 } 1040 if (child instanceof DropTarget) { 1041 mDragController.addDropTarget((DropTarget) child); 1042 } 1043 } 1044 1045 /** 1046 * Called directly from a CellLayout (not by the framework), after we've been added as a 1047 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 1048 * that it should intercept touch events, which is not something that is normally supported. 1049 */ 1050 @SuppressLint("ClickableViewAccessibility") 1051 @Override 1052 public boolean onTouch(View v, MotionEvent event) { 1053 return (workspaceInModalState() || !isFinishedSwitchingState()) 1054 || (!workspaceInModalState() && indexOfChild(v) != mCurrentPage); 1055 } 1056 1057 public boolean isSwitchingState() { 1058 return mIsSwitchingState; 1059 } 1060 1061 /** This differs from isSwitchingState in that we take into account how far the transition 1062 * has completed. */ 1063 public boolean isFinishedSwitchingState() { 1064 return !mIsSwitchingState || (mTransitionProgress > 0.5f); 1065 } 1066 1067 protected void onWindowVisibilityChanged (int visibility) { 1068 mLauncher.onWindowVisibilityChanged(visibility); 1069 } 1070 1071 @Override 1072 public boolean dispatchUnhandledMove(View focused, int direction) { 1073 if (workspaceInModalState() || !isFinishedSwitchingState()) { 1074 // when the home screens are shrunken, shouldn't allow side-scrolling 1075 return false; 1076 } 1077 return super.dispatchUnhandledMove(focused, direction); 1078 } 1079 1080 @Override 1081 public boolean onInterceptTouchEvent(MotionEvent ev) { 1082 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 1083 case MotionEvent.ACTION_DOWN: 1084 mXDown = ev.getX(); 1085 mYDown = ev.getY(); 1086 mTouchDownTime = System.currentTimeMillis(); 1087 break; 1088 case MotionEvent.ACTION_POINTER_UP: 1089 case MotionEvent.ACTION_UP: 1090 if (mTouchState == TOUCH_STATE_REST) { 1091 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 1092 if (currentPage != null) { 1093 onWallpaperTap(ev); 1094 } 1095 } 1096 } 1097 return super.onInterceptTouchEvent(ev); 1098 } 1099 1100 @Override 1101 public boolean onGenericMotionEvent(MotionEvent event) { 1102 // Ignore pointer scroll events if the custom content doesn't allow scrolling. 1103 if ((getScreenIdForPageIndex(getCurrentPage()) == CUSTOM_CONTENT_SCREEN_ID) 1104 && (mCustomContentCallbacks != null) 1105 && !mCustomContentCallbacks.isScrollingAllowed()) { 1106 return false; 1107 } 1108 return super.onGenericMotionEvent(event); 1109 } 1110 1111 protected void reinflateWidgetsIfNecessary() { 1112 final int clCount = getChildCount(); 1113 for (int i = 0; i < clCount; i++) { 1114 CellLayout cl = (CellLayout) getChildAt(i); 1115 ShortcutAndWidgetContainer swc = cl.getShortcutsAndWidgets(); 1116 final int itemCount = swc.getChildCount(); 1117 for (int j = 0; j < itemCount; j++) { 1118 View v = swc.getChildAt(j); 1119 1120 if (v != null && v.getTag() instanceof LauncherAppWidgetInfo) { 1121 LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) v.getTag(); 1122 LauncherAppWidgetHostView lahv = (LauncherAppWidgetHostView) info.hostView; 1123 if (lahv != null && lahv.isReinflateRequired()) { 1124 // Remove and rebind the current widget (which was inflated in the wrong 1125 // orientation), but don't delete it from the database 1126 mLauncher.removeItem(lahv, info, false /* deleteFromDb */); 1127 mLauncher.bindAppWidget(info); 1128 } 1129 } 1130 } 1131 } 1132 } 1133 1134 @Override 1135 protected void determineScrollingStart(MotionEvent ev) { 1136 if (!isFinishedSwitchingState()) return; 1137 1138 float deltaX = ev.getX() - mXDown; 1139 float absDeltaX = Math.abs(deltaX); 1140 float absDeltaY = Math.abs(ev.getY() - mYDown); 1141 1142 if (Float.compare(absDeltaX, 0f) == 0) return; 1143 1144 float slope = absDeltaY / absDeltaX; 1145 float theta = (float) Math.atan(slope); 1146 1147 if (absDeltaX > mTouchSlop || absDeltaY > mTouchSlop) { 1148 cancelCurrentPageLongPress(); 1149 } 1150 1151 boolean passRightSwipesToCustomContent = 1152 (mTouchDownTime - mCustomContentShowTime) > CUSTOM_CONTENT_GESTURE_DELAY; 1153 1154 boolean swipeInIgnoreDirection = mIsRtl ? deltaX < 0 : deltaX > 0; 1155 boolean onCustomContentScreen = 1156 getScreenIdForPageIndex(getCurrentPage()) == CUSTOM_CONTENT_SCREEN_ID; 1157 if (swipeInIgnoreDirection && onCustomContentScreen && passRightSwipesToCustomContent) { 1158 // Pass swipes to the right to the custom content page. 1159 return; 1160 } 1161 1162 if (onCustomContentScreen && (mCustomContentCallbacks != null) 1163 && !mCustomContentCallbacks.isScrollingAllowed()) { 1164 // Don't allow workspace scrolling if the current custom content screen doesn't allow 1165 // scrolling. 1166 return; 1167 } 1168 1169 if (theta > MAX_SWIPE_ANGLE) { 1170 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 1171 return; 1172 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 1173 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 1174 // increase the touch slop to make it harder to begin scrolling the workspace. This 1175 // results in vertically scrolling widgets to more easily. The higher the angle, the 1176 // more we increase touch slop. 1177 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 1178 float extraRatio = (float) 1179 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 1180 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 1181 } else { 1182 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 1183 super.determineScrollingStart(ev); 1184 } 1185 } 1186 1187 protected void onPageBeginMoving() { 1188 super.onPageBeginMoving(); 1189 1190 if (isHardwareAccelerated()) { 1191 updateChildrenLayersEnabled(false); 1192 } else { 1193 if (mNextPage != INVALID_PAGE) { 1194 // we're snapping to a particular screen 1195 enableChildrenCache(mCurrentPage, mNextPage); 1196 } else { 1197 // this is when user is actively dragging a particular screen, they might 1198 // swipe it either left or right (but we won't advance by more than one screen) 1199 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 1200 } 1201 } 1202 } 1203 1204 protected void onPageEndMoving() { 1205 super.onPageEndMoving(); 1206 1207 if (isHardwareAccelerated()) { 1208 updateChildrenLayersEnabled(false); 1209 } else { 1210 clearChildrenCache(); 1211 } 1212 1213 if (mDragController.isDragging()) { 1214 if (workspaceInModalState()) { 1215 // If we are in springloaded mode, then force an event to check if the current touch 1216 // is under a new page (to scroll to) 1217 mDragController.forceTouchMove(); 1218 } 1219 } 1220 1221 if (mDelayedResizeRunnable != null) { 1222 mDelayedResizeRunnable.run(); 1223 mDelayedResizeRunnable = null; 1224 } 1225 1226 if (mDelayedSnapToPageRunnable != null) { 1227 mDelayedSnapToPageRunnable.run(); 1228 mDelayedSnapToPageRunnable = null; 1229 } 1230 if (mStripScreensOnPageStopMoving) { 1231 stripEmptyScreens(); 1232 mStripScreensOnPageStopMoving = false; 1233 } 1234 1235 if (mShouldSendPageSettled) { 1236 mLauncherOverlay.onScrollSettled(); 1237 mShouldSendPageSettled = false; 1238 } 1239 } 1240 1241 protected void onScrollInteractionBegin() { 1242 super.onScrollInteractionEnd(); 1243 mScrollInteractionBegan = true; 1244 } 1245 1246 protected void onScrollInteractionEnd() { 1247 super.onScrollInteractionEnd(); 1248 mScrollInteractionBegan = false; 1249 if (mStartedSendingScrollEvents) { 1250 mStartedSendingScrollEvents = false; 1251 mLauncherOverlay.onScrollInteractionEnd(); 1252 } 1253 } 1254 1255 public void setLauncherOverlay(LauncherOverlay overlay) { 1256 mLauncherOverlay = overlay; 1257 } 1258 1259 @Override 1260 protected void overScroll(float amount) { 1261 boolean shouldOverScroll = (amount <= 0 && (!hasCustomContent() || mIsRtl)) || 1262 (amount >= 0 && (!hasCustomContent() || !mIsRtl)); 1263 1264 boolean shouldScrollOverlay = mLauncherOverlay != null && 1265 ((amount <= 0 && !mIsRtl) || (amount >= 0 && mIsRtl)); 1266 1267 boolean shouldZeroOverlay = mLauncherOverlay != null && mLastOverlaySroll != 0 && 1268 ((amount >= 0 && !mIsRtl) || (amount <= 0 && mIsRtl)); 1269 1270 if (shouldScrollOverlay) { 1271 if (!mStartedSendingScrollEvents && mScrollInteractionBegan) { 1272 mStartedSendingScrollEvents = true; 1273 mLauncherOverlay.onScrollInteractionBegin(); 1274 mShouldSendPageSettled = true; 1275 } 1276 int screenSize = getViewportWidth(); 1277 float f = (amount / screenSize); 1278 1279 int progress = (int) Math.abs((f * 100)); 1280 1281 mLastOverlaySroll = progress; 1282 mLauncherOverlay.onScrollChange(progress, mIsRtl); 1283 } else if (shouldOverScroll) { 1284 dampedOverScroll(amount); 1285 } 1286 1287 if (shouldZeroOverlay) { 1288 mLauncherOverlay.onScrollChange(0, mIsRtl); 1289 } 1290 } 1291 1292 @Override 1293 protected void getEdgeVerticalPostion(int[] pos) { 1294 View child = getChildAt(getPageCount() - 1); 1295 pos[0] = child.getTop(); 1296 pos[1] = child.getBottom(); 1297 } 1298 1299 @Override 1300 protected void notifyPageSwitchListener() { 1301 super.notifyPageSwitchListener(); 1302 1303 if (hasCustomContent() && getNextPage() == 0 && !mCustomContentShowing) { 1304 mCustomContentShowing = true; 1305 if (mCustomContentCallbacks != null) { 1306 mCustomContentCallbacks.onShow(false); 1307 mCustomContentShowTime = System.currentTimeMillis(); 1308 } 1309 } else if (hasCustomContent() && getNextPage() != 0 && mCustomContentShowing) { 1310 mCustomContentShowing = false; 1311 if (mCustomContentCallbacks != null) { 1312 mCustomContentCallbacks.onHide(); 1313 } 1314 } 1315 } 1316 1317 protected CustomContentCallbacks getCustomContentCallbacks() { 1318 return mCustomContentCallbacks; 1319 } 1320 1321 protected void setWallpaperDimension() { 1322 new AsyncTask<Void, Void, Void>() { 1323 public Void doInBackground(Void ... args) { 1324 String spKey = LauncherFiles.WALLPAPER_CROP_PREFERENCES_KEY; 1325 SharedPreferences sp = 1326 mLauncher.getSharedPreferences(spKey, Context.MODE_MULTI_PROCESS); 1327 WallpaperUtils.suggestWallpaperDimension(mLauncher.getResources(), 1328 sp, mLauncher.getWindowManager(), mWallpaperManager, 1329 mLauncher.overrideWallpaperDimensions()); 1330 return null; 1331 } 1332 }.executeOnExecutor(Utilities.THREAD_POOL_EXECUTOR); 1333 } 1334 1335 protected void snapToPage(int whichPage, Runnable r) { 1336 snapToPage(whichPage, SLOW_PAGE_SNAP_ANIMATION_DURATION, r); 1337 } 1338 1339 protected void snapToPage(int whichPage, int duration, Runnable r) { 1340 if (mDelayedSnapToPageRunnable != null) { 1341 mDelayedSnapToPageRunnable.run(); 1342 } 1343 mDelayedSnapToPageRunnable = r; 1344 snapToPage(whichPage, duration); 1345 } 1346 1347 public void snapToScreenId(long screenId) { 1348 snapToScreenId(screenId, null); 1349 } 1350 1351 protected void snapToScreenId(long screenId, Runnable r) { 1352 snapToPage(getPageIndexForScreenId(screenId), r); 1353 } 1354 1355 class WallpaperOffsetInterpolator implements Choreographer.FrameCallback { 1356 float mFinalOffset = 0.0f; 1357 float mCurrentOffset = 0.5f; // to force an initial update 1358 boolean mWaitingForUpdate; 1359 Choreographer mChoreographer; 1360 Interpolator mInterpolator; 1361 boolean mAnimating; 1362 long mAnimationStartTime; 1363 float mAnimationStartOffset; 1364 private final int ANIMATION_DURATION = 250; 1365 // Don't use all the wallpaper for parallax until you have at least this many pages 1366 private final int MIN_PARALLAX_PAGE_SPAN = 3; 1367 int mNumScreens; 1368 1369 public WallpaperOffsetInterpolator() { 1370 mChoreographer = Choreographer.getInstance(); 1371 mInterpolator = new DecelerateInterpolator(1.5f); 1372 } 1373 1374 @Override 1375 public void doFrame(long frameTimeNanos) { 1376 updateOffset(false); 1377 } 1378 1379 private void updateOffset(boolean force) { 1380 if (mWaitingForUpdate || force) { 1381 mWaitingForUpdate = false; 1382 if (computeScrollOffset() && mWindowToken != null) { 1383 try { 1384 mWallpaperManager.setWallpaperOffsets(mWindowToken, 1385 mWallpaperOffset.getCurrX(), 0.5f); 1386 setWallpaperOffsetSteps(); 1387 } catch (IllegalArgumentException e) { 1388 Log.e(TAG, "Error updating wallpaper offset: " + e); 1389 } 1390 } 1391 } 1392 } 1393 1394 public boolean computeScrollOffset() { 1395 final float oldOffset = mCurrentOffset; 1396 if (mAnimating) { 1397 long durationSinceAnimation = System.currentTimeMillis() - mAnimationStartTime; 1398 float t0 = durationSinceAnimation / (float) ANIMATION_DURATION; 1399 float t1 = mInterpolator.getInterpolation(t0); 1400 mCurrentOffset = mAnimationStartOffset + 1401 (mFinalOffset - mAnimationStartOffset) * t1; 1402 mAnimating = durationSinceAnimation < ANIMATION_DURATION; 1403 } else { 1404 mCurrentOffset = mFinalOffset; 1405 } 1406 1407 if (Math.abs(mCurrentOffset - mFinalOffset) > 0.0000001f) { 1408 scheduleUpdate(); 1409 } 1410 if (Math.abs(oldOffset - mCurrentOffset) > 0.0000001f) { 1411 return true; 1412 } 1413 return false; 1414 } 1415 1416 public float wallpaperOffsetForScroll(int scroll) { 1417 // TODO: do different behavior if it's a live wallpaper? 1418 // Don't use up all the wallpaper parallax until you have at least 1419 // MIN_PARALLAX_PAGE_SPAN pages 1420 int numScrollingPages = getNumScreensExcludingEmptyAndCustom(); 1421 int parallaxPageSpan; 1422 if (mWallpaperIsLiveWallpaper) { 1423 parallaxPageSpan = numScrollingPages - 1; 1424 } else { 1425 parallaxPageSpan = Math.max(MIN_PARALLAX_PAGE_SPAN, numScrollingPages - 1); 1426 } 1427 mNumPagesForWallpaperParallax = parallaxPageSpan; 1428 1429 if (getChildCount() <= 1) { 1430 if (mIsRtl) { 1431 return 1 - 1.0f/mNumPagesForWallpaperParallax; 1432 } 1433 return 0; 1434 } 1435 1436 // Exclude the leftmost page 1437 int emptyExtraPages = numEmptyScreensToIgnore(); 1438 int firstIndex = numCustomPages(); 1439 // Exclude the last extra empty screen (if we have > MIN_PARALLAX_PAGE_SPAN pages) 1440 int lastIndex = getChildCount() - 1 - emptyExtraPages; 1441 if (mIsRtl) { 1442 int temp = firstIndex; 1443 firstIndex = lastIndex; 1444 lastIndex = temp; 1445 } 1446 1447 int firstPageScrollX = getScrollForPage(firstIndex); 1448 int scrollRange = getScrollForPage(lastIndex) - firstPageScrollX; 1449 if (scrollRange == 0) { 1450 return 0; 1451 } else { 1452 // Sometimes the left parameter of the pages is animated during a layout transition; 1453 // this parameter offsets it to keep the wallpaper from animating as well 1454 int adjustedScroll = 1455 scroll - firstPageScrollX - getLayoutTransitionOffsetForPage(0); 1456 float offset = Math.min(1, adjustedScroll / (float) scrollRange); 1457 offset = Math.max(0, offset); 1458 1459 // On RTL devices, push the wallpaper offset to the right if we don't have enough 1460 // pages (ie if numScrollingPages < MIN_PARALLAX_PAGE_SPAN) 1461 if (!mWallpaperIsLiveWallpaper && numScrollingPages < MIN_PARALLAX_PAGE_SPAN 1462 && mIsRtl) { 1463 return offset * (parallaxPageSpan - numScrollingPages + 1) / parallaxPageSpan; 1464 } 1465 return offset * (numScrollingPages - 1) / parallaxPageSpan; 1466 } 1467 } 1468 1469 private float wallpaperOffsetForCurrentScroll() { 1470 return wallpaperOffsetForScroll(getScrollX()); 1471 } 1472 1473 private int numEmptyScreensToIgnore() { 1474 int numScrollingPages = getChildCount() - numCustomPages(); 1475 if (numScrollingPages >= MIN_PARALLAX_PAGE_SPAN && hasExtraEmptyScreen()) { 1476 return 1; 1477 } else { 1478 return 0; 1479 } 1480 } 1481 1482 private int getNumScreensExcludingEmptyAndCustom() { 1483 int numScrollingPages = getChildCount() - numEmptyScreensToIgnore() - numCustomPages(); 1484 return numScrollingPages; 1485 } 1486 1487 public void syncWithScroll() { 1488 float offset = wallpaperOffsetForCurrentScroll(); 1489 mWallpaperOffset.setFinalX(offset); 1490 updateOffset(true); 1491 } 1492 1493 public float getCurrX() { 1494 return mCurrentOffset; 1495 } 1496 1497 public float getFinalX() { 1498 return mFinalOffset; 1499 } 1500 1501 private void animateToFinal() { 1502 mAnimating = true; 1503 mAnimationStartOffset = mCurrentOffset; 1504 mAnimationStartTime = System.currentTimeMillis(); 1505 } 1506 1507 private void setWallpaperOffsetSteps() { 1508 // Set wallpaper offset steps (1 / (number of screens - 1)) 1509 float xOffset = 1.0f / mNumPagesForWallpaperParallax; 1510 if (xOffset != mLastSetWallpaperOffsetSteps) { 1511 mWallpaperManager.setWallpaperOffsetSteps(xOffset, 1.0f); 1512 mLastSetWallpaperOffsetSteps = xOffset; 1513 } 1514 } 1515 1516 public void setFinalX(float x) { 1517 scheduleUpdate(); 1518 mFinalOffset = Math.max(0f, Math.min(x, 1.0f)); 1519 if (getNumScreensExcludingEmptyAndCustom() != mNumScreens) { 1520 if (mNumScreens > 0) { 1521 // Don't animate if we're going from 0 screens 1522 animateToFinal(); 1523 } 1524 mNumScreens = getNumScreensExcludingEmptyAndCustom(); 1525 } 1526 } 1527 1528 private void scheduleUpdate() { 1529 if (!mWaitingForUpdate) { 1530 mChoreographer.postFrameCallback(this); 1531 mWaitingForUpdate = true; 1532 } 1533 } 1534 1535 public void jumpToFinal() { 1536 mCurrentOffset = mFinalOffset; 1537 } 1538 } 1539 1540 @Override 1541 public void computeScroll() { 1542 super.computeScroll(); 1543 mWallpaperOffset.syncWithScroll(); 1544 } 1545 1546 @Override 1547 public void announceForAccessibility(CharSequence text) { 1548 // Don't announce if apps is on top of us. 1549 if (!mLauncher.isAppsViewVisible()) { 1550 super.announceForAccessibility(text); 1551 } 1552 } 1553 1554 public void showOutlinesTemporarily() { 1555 if (!mIsPageMoving && !isTouchActive()) { 1556 snapToPage(mCurrentPage); 1557 } 1558 } 1559 1560 float backgroundAlphaInterpolator(float r) { 1561 float pivotA = 0.1f; 1562 float pivotB = 0.4f; 1563 if (r < pivotA) { 1564 return 0; 1565 } else if (r > pivotB) { 1566 return 1.0f; 1567 } else { 1568 return (r - pivotA)/(pivotB - pivotA); 1569 } 1570 } 1571 1572 private void updatePageAlphaValues(int screenCenter) { 1573 if (mWorkspaceFadeInAdjacentScreens && 1574 !workspaceInModalState() && 1575 !mIsSwitchingState) { 1576 for (int i = numCustomPages(); i < getChildCount(); i++) { 1577 CellLayout child = (CellLayout) getChildAt(i); 1578 if (child != null) { 1579 float scrollProgress = getScrollProgress(screenCenter, child, i); 1580 float alpha = 1 - Math.abs(scrollProgress); 1581 child.getShortcutsAndWidgets().setAlpha(alpha); 1582 } 1583 } 1584 } 1585 } 1586 1587 @TargetApi(Build.VERSION_CODES.LOLLIPOP) 1588 @Override 1589 public void enableAccessibleDrag(boolean enable) { 1590 for (int i = 0; i < getChildCount(); i++) { 1591 CellLayout child = (CellLayout) getChildAt(i); 1592 child.enableAccessibleDrag(enable, CellLayout.WORKSPACE_ACCESSIBILITY_DRAG); 1593 } 1594 1595 if (enable) { 1596 // We need to allow our individual children to become click handlers in this case 1597 setOnClickListener(null); 1598 } else { 1599 // Reset our click listener 1600 setOnClickListener(mLauncher); 1601 } 1602 mLauncher.getSearchDropTargetBar().enableAccessibleDrag(enable); 1603 mLauncher.getHotseat().getLayout() 1604 .enableAccessibleDrag(enable, CellLayout.WORKSPACE_ACCESSIBILITY_DRAG); 1605 } 1606 1607 public boolean hasCustomContent() { 1608 return (mScreenOrder.size() > 0 && mScreenOrder.get(0) == CUSTOM_CONTENT_SCREEN_ID); 1609 } 1610 1611 public int numCustomPages() { 1612 return hasCustomContent() ? 1 : 0; 1613 } 1614 1615 public boolean isOnOrMovingToCustomContent() { 1616 return hasCustomContent() && getNextPage() == 0 && mRestorePage == INVALID_RESTORE_PAGE; 1617 } 1618 1619 private void updateStateForCustomContent(int screenCenter) { 1620 float translationX = 0; 1621 float progress = 0; 1622 if (hasCustomContent()) { 1623 int index = mScreenOrder.indexOf(CUSTOM_CONTENT_SCREEN_ID); 1624 1625 int scrollDelta = getScrollX() - getScrollForPage(index) - 1626 getLayoutTransitionOffsetForPage(index); 1627 float scrollRange = getScrollForPage(index + 1) - getScrollForPage(index); 1628 translationX = scrollRange - scrollDelta; 1629 progress = (scrollRange - scrollDelta) / scrollRange; 1630 1631 if (mIsRtl) { 1632 translationX = Math.min(0, translationX); 1633 } else { 1634 translationX = Math.max(0, translationX); 1635 } 1636 progress = Math.max(0, progress); 1637 } 1638 1639 if (Float.compare(progress, mLastCustomContentScrollProgress) == 0) return; 1640 1641 CellLayout cc = mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID); 1642 if (progress > 0 && cc.getVisibility() != VISIBLE && !workspaceInModalState()) { 1643 cc.setVisibility(VISIBLE); 1644 } 1645 1646 mLastCustomContentScrollProgress = progress; 1647 1648 // We should only update the drag layer background alpha if we are not in all apps or the 1649 // widgets tray 1650 if (mState == State.NORMAL) { 1651 mLauncher.getDragLayer().setBackgroundAlpha(progress == 1 ? 0 : progress * 0.8f); 1652 } 1653 1654 if (mLauncher.getHotseat() != null) { 1655 mLauncher.getHotseat().setTranslationX(translationX); 1656 } 1657 1658 if (getPageIndicator() != null) { 1659 getPageIndicator().setTranslationX(translationX); 1660 } 1661 1662 if (mCustomContentCallbacks != null) { 1663 mCustomContentCallbacks.onScrollProgressChanged(progress); 1664 } 1665 } 1666 1667 @Override 1668 protected OnClickListener getPageIndicatorClickListener() { 1669 AccessibilityManager am = (AccessibilityManager) 1670 getContext().getSystemService(Context.ACCESSIBILITY_SERVICE); 1671 if (!am.isTouchExplorationEnabled()) { 1672 return null; 1673 } 1674 OnClickListener listener = new OnClickListener() { 1675 @Override 1676 public void onClick(View arg0) { 1677 mLauncher.showOverviewMode(true); 1678 } 1679 }; 1680 return listener; 1681 } 1682 1683 @Override 1684 protected void screenScrolled(int screenCenter) { 1685 updatePageAlphaValues(screenCenter); 1686 updateStateForCustomContent(screenCenter); 1687 enableHwLayersOnVisiblePages(); 1688 } 1689 1690 protected void onAttachedToWindow() { 1691 super.onAttachedToWindow(); 1692 mWindowToken = getWindowToken(); 1693 computeScroll(); 1694 mDragController.setWindowToken(mWindowToken); 1695 } 1696 1697 protected void onDetachedFromWindow() { 1698 super.onDetachedFromWindow(); 1699 mWindowToken = null; 1700 } 1701 1702 protected void onResume() { 1703 if (getPageIndicator() != null) { 1704 // In case accessibility state has changed, we need to perform this on every 1705 // attach to window 1706 OnClickListener listener = getPageIndicatorClickListener(); 1707 if (listener != null) { 1708 getPageIndicator().setOnClickListener(listener); 1709 } 1710 } 1711 1712 // Update wallpaper dimensions if they were changed since last onResume 1713 // (we also always set the wallpaper dimensions in the constructor) 1714 if (LauncherAppState.getInstance().hasWallpaperChangedSinceLastCheck()) { 1715 setWallpaperDimension(); 1716 } 1717 mWallpaperIsLiveWallpaper = mWallpaperManager.getWallpaperInfo() != null; 1718 // Force the wallpaper offset steps to be set again, because another app might have changed 1719 // them 1720 mLastSetWallpaperOffsetSteps = 0f; 1721 } 1722 1723 @Override 1724 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1725 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1726 mWallpaperOffset.syncWithScroll(); 1727 mWallpaperOffset.jumpToFinal(); 1728 } 1729 super.onLayout(changed, left, top, right, bottom); 1730 } 1731 1732 @Override 1733 protected void onDraw(Canvas canvas) { 1734 super.onDraw(canvas); 1735 1736 // Call back to LauncherModel to finish binding after the first draw 1737 post(mBindPages); 1738 } 1739 1740 @Override 1741 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1742 if (!mLauncher.isAppsViewVisible()) { 1743 final Folder openFolder = getOpenFolder(); 1744 if (openFolder != null) { 1745 return openFolder.requestFocus(direction, previouslyFocusedRect); 1746 } else { 1747 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1748 } 1749 } 1750 return false; 1751 } 1752 1753 @Override 1754 public int getDescendantFocusability() { 1755 if (workspaceInModalState()) { 1756 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1757 } 1758 return super.getDescendantFocusability(); 1759 } 1760 1761 @Override 1762 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1763 if (!mLauncher.isAppsViewVisible()) { 1764 final Folder openFolder = getOpenFolder(); 1765 if (openFolder != null) { 1766 openFolder.addFocusables(views, direction); 1767 } else { 1768 super.addFocusables(views, direction, focusableMode); 1769 } 1770 } 1771 } 1772 1773 public boolean workspaceInModalState() { 1774 return mState != State.NORMAL; 1775 } 1776 1777 void enableChildrenCache(int fromPage, int toPage) { 1778 if (fromPage > toPage) { 1779 final int temp = fromPage; 1780 fromPage = toPage; 1781 toPage = temp; 1782 } 1783 1784 final int screenCount = getChildCount(); 1785 1786 fromPage = Math.max(fromPage, 0); 1787 toPage = Math.min(toPage, screenCount - 1); 1788 1789 for (int i = fromPage; i <= toPage; i++) { 1790 final CellLayout layout = (CellLayout) getChildAt(i); 1791 layout.setChildrenDrawnWithCacheEnabled(true); 1792 layout.setChildrenDrawingCacheEnabled(true); 1793 } 1794 } 1795 1796 void clearChildrenCache() { 1797 final int screenCount = getChildCount(); 1798 for (int i = 0; i < screenCount; i++) { 1799 final CellLayout layout = (CellLayout) getChildAt(i); 1800 layout.setChildrenDrawnWithCacheEnabled(false); 1801 // In software mode, we don't want the items to continue to be drawn into bitmaps 1802 if (!isHardwareAccelerated()) { 1803 layout.setChildrenDrawingCacheEnabled(false); 1804 } 1805 } 1806 } 1807 1808 @Thunk void updateChildrenLayersEnabled(boolean force) { 1809 boolean small = mState == State.OVERVIEW || mIsSwitchingState; 1810 boolean enableChildrenLayers = force || small || mAnimatingViewIntoPlace || isPageMoving(); 1811 1812 if (enableChildrenLayers != mChildrenLayersEnabled) { 1813 mChildrenLayersEnabled = enableChildrenLayers; 1814 if (mChildrenLayersEnabled) { 1815 enableHwLayersOnVisiblePages(); 1816 } else { 1817 for (int i = 0; i < getPageCount(); i++) { 1818 final CellLayout cl = (CellLayout) getChildAt(i); 1819 cl.enableHardwareLayer(false); 1820 } 1821 } 1822 } 1823 } 1824 1825 private void enableHwLayersOnVisiblePages() { 1826 if (mChildrenLayersEnabled) { 1827 final int screenCount = getChildCount(); 1828 getVisiblePages(mTempVisiblePagesRange); 1829 int leftScreen = mTempVisiblePagesRange[0]; 1830 int rightScreen = mTempVisiblePagesRange[1]; 1831 if (leftScreen == rightScreen) { 1832 // make sure we're caching at least two pages always 1833 if (rightScreen < screenCount - 1) { 1834 rightScreen++; 1835 } else if (leftScreen > 0) { 1836 leftScreen--; 1837 } 1838 } 1839 1840 final CellLayout customScreen = mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID); 1841 for (int i = 0; i < screenCount; i++) { 1842 final CellLayout layout = (CellLayout) getPageAt(i); 1843 1844 // enable layers between left and right screen inclusive, except for the 1845 // customScreen, which may animate its content during transitions. 1846 boolean enableLayer = layout != customScreen && 1847 leftScreen <= i && i <= rightScreen && shouldDrawChild(layout); 1848 layout.enableHardwareLayer(enableLayer); 1849 } 1850 } 1851 } 1852 1853 public void buildPageHardwareLayers() { 1854 // force layers to be enabled just for the call to buildLayer 1855 updateChildrenLayersEnabled(true); 1856 if (getWindowToken() != null) { 1857 final int childCount = getChildCount(); 1858 for (int i = 0; i < childCount; i++) { 1859 CellLayout cl = (CellLayout) getChildAt(i); 1860 cl.buildHardwareLayer(); 1861 } 1862 } 1863 updateChildrenLayersEnabled(false); 1864 } 1865 1866 protected void onWallpaperTap(MotionEvent ev) { 1867 final int[] position = mTempCell; 1868 getLocationOnScreen(position); 1869 1870 int pointerIndex = ev.getActionIndex(); 1871 position[0] += (int) ev.getX(pointerIndex); 1872 position[1] += (int) ev.getY(pointerIndex); 1873 1874 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1875 ev.getAction() == MotionEvent.ACTION_UP 1876 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1877 position[0], position[1], 0, null); 1878 } 1879 1880 /* 1881 * 1882 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1883 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1884 * 1885 * These methods mark the appropriate pages as accepting drops (which alters their visual 1886 * appearance). 1887 * 1888 */ 1889 private static Rect getDrawableBounds(Drawable d) { 1890 Rect bounds = new Rect(); 1891 d.copyBounds(bounds); 1892 if (bounds.width() == 0 || bounds.height() == 0) { 1893 bounds.set(0, 0, d.getIntrinsicWidth(), d.getIntrinsicHeight()); 1894 } else { 1895 bounds.offsetTo(0, 0); 1896 } 1897 if (d instanceof PreloadIconDrawable) { 1898 int inset = -((PreloadIconDrawable) d).getOutset(); 1899 bounds.inset(inset, inset); 1900 } 1901 return bounds; 1902 } 1903 1904 public void onExternalDragStartedWithItem(View v) { 1905 // Compose a drag bitmap with the view scaled to the icon size 1906 DeviceProfile grid = mLauncher.getDeviceProfile(); 1907 int iconSize = grid.iconSizePx; 1908 int bmpWidth = v.getMeasuredWidth(); 1909 int bmpHeight = v.getMeasuredHeight(); 1910 1911 // If this is a text view, use its drawable instead 1912 if (v instanceof TextView) { 1913 Drawable d = getTextViewIcon((TextView) v); 1914 Rect bounds = getDrawableBounds(d); 1915 bmpWidth = bounds.width(); 1916 bmpHeight = bounds.height(); 1917 } 1918 1919 // Compose the bitmap to create the icon from 1920 Bitmap b = Bitmap.createBitmap(bmpWidth, bmpHeight, 1921 Bitmap.Config.ARGB_8888); 1922 mCanvas.setBitmap(b); 1923 drawDragView(v, mCanvas, 0); 1924 mCanvas.setBitmap(null); 1925 1926 // The outline is used to visualize where the item will land if dropped 1927 mDragOutline = createDragOutline(b, DRAG_BITMAP_PADDING, iconSize, iconSize, true); 1928 } 1929 1930 public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, boolean clipAlpha) { 1931 int[] size = estimateItemSize(info, false); 1932 1933 // The outline is used to visualize where the item will land if dropped 1934 mDragOutline = createDragOutline(b, DRAG_BITMAP_PADDING, size[0], size[1], clipAlpha); 1935 } 1936 1937 public void exitWidgetResizeMode() { 1938 DragLayer dragLayer = mLauncher.getDragLayer(); 1939 dragLayer.clearAllResizeFrames(); 1940 } 1941 1942 @Override 1943 protected void getFreeScrollPageRange(int[] range) { 1944 getOverviewModePages(range); 1945 } 1946 1947 private void getOverviewModePages(int[] range) { 1948 int start = numCustomPages(); 1949 int end = getChildCount() - 1; 1950 1951 range[0] = Math.max(0, Math.min(start, getChildCount() - 1)); 1952 range[1] = Math.max(0, end); 1953 } 1954 1955 public void onStartReordering() { 1956 super.onStartReordering(); 1957 // Reordering handles its own animations, disable the automatic ones. 1958 disableLayoutTransitions(); 1959 } 1960 1961 public void onEndReordering() { 1962 super.onEndReordering(); 1963 1964 if (mLauncher.isWorkspaceLoading()) { 1965 // Invalid and dangerous operation if workspace is loading 1966 return; 1967 } 1968 1969 mScreenOrder.clear(); 1970 int count = getChildCount(); 1971 for (int i = 0; i < count; i++) { 1972 CellLayout cl = ((CellLayout) getChildAt(i)); 1973 mScreenOrder.add(getIdForScreen(cl)); 1974 } 1975 1976 mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); 1977 1978 // Re-enable auto layout transitions for page deletion. 1979 enableLayoutTransitions(); 1980 } 1981 1982 public boolean isInOverviewMode() { 1983 return mState == State.OVERVIEW; 1984 } 1985 1986 int getOverviewModeTranslationY() { 1987 DeviceProfile grid = mLauncher.getDeviceProfile(); 1988 Rect workspacePadding = grid.getWorkspacePadding(Utilities.isRtl(getResources())); 1989 int overviewButtonBarHeight = grid.getOverviewModeButtonBarHeight(); 1990 1991 int scaledHeight = (int) (mOverviewModeShrinkFactor * getNormalChildHeight()); 1992 int workspaceTop = mInsets.top + workspacePadding.top; 1993 int workspaceBottom = getViewportHeight() - mInsets.bottom - workspacePadding.bottom; 1994 int overviewTop = mInsets.top; 1995 int overviewBottom = getViewportHeight() - mInsets.bottom - overviewButtonBarHeight; 1996 int workspaceOffsetTopEdge = workspaceTop + ((workspaceBottom - workspaceTop) - scaledHeight) / 2; 1997 int overviewOffsetTopEdge = overviewTop + (overviewBottom - overviewTop - scaledHeight) / 2; 1998 return -workspaceOffsetTopEdge + overviewOffsetTopEdge; 1999 } 2000 2001 /** 2002 * Sets the current workspace {@link State}, returning an animation transitioning the workspace 2003 * to that new state. 2004 */ 2005 public Animator setStateWithAnimation(State toState, int toPage, boolean animated, 2006 HashMap<View, Integer> layerViews) { 2007 // Create the animation to the new state 2008 Animator workspaceAnim = mStateTransitionAnimation.getAnimationToState(mState, 2009 toState, toPage, animated, layerViews); 2010 2011 // Update the current state 2012 mState = toState; 2013 updateAccessibilityFlags(); 2014 2015 return workspaceAnim; 2016 } 2017 2018 State getState() { 2019 return mState; 2020 } 2021 2022 public void updateAccessibilityFlags() { 2023 if (Utilities.ATLEAST_LOLLIPOP) { 2024 int total = getPageCount(); 2025 for (int i = numCustomPages(); i < total; i++) { 2026 updateAccessibilityFlags((CellLayout) getPageAt(i), i); 2027 } 2028 setImportantForAccessibility((mState == State.NORMAL || mState == State.OVERVIEW) 2029 ? IMPORTANT_FOR_ACCESSIBILITY_AUTO 2030 : IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS); 2031 } else { 2032 int accessible = mState == State.NORMAL ? 2033 IMPORTANT_FOR_ACCESSIBILITY_AUTO : 2034 IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS; 2035 setImportantForAccessibility(accessible); 2036 } 2037 } 2038 2039 private void updateAccessibilityFlags(CellLayout page, int pageNo) { 2040 if (mState == State.OVERVIEW) { 2041 page.setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_YES); 2042 page.getShortcutsAndWidgets().setImportantForAccessibility( 2043 IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS); 2044 page.setContentDescription(getPageDescription(pageNo)); 2045 2046 if (mPagesAccessibilityDelegate == null) { 2047 mPagesAccessibilityDelegate = new OverviewScreenAccessibilityDelegate(this); 2048 } 2049 page.setAccessibilityDelegate(mPagesAccessibilityDelegate); 2050 } else { 2051 int accessible = mState == State.NORMAL ? 2052 IMPORTANT_FOR_ACCESSIBILITY_AUTO : 2053 IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS; 2054 page.setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_NO); 2055 page.getShortcutsAndWidgets().setImportantForAccessibility(accessible); 2056 page.setContentDescription(null); 2057 page.setAccessibilityDelegate(null); 2058 } 2059 } 2060 2061 @Override 2062 public void onLauncherTransitionPrepare(Launcher l, boolean animated, boolean toWorkspace) { 2063 mIsSwitchingState = true; 2064 mTransitionProgress = 0; 2065 2066 // Invalidate here to ensure that the pages are rendered during the state change transition. 2067 invalidate(); 2068 2069 updateChildrenLayersEnabled(false); 2070 hideCustomContentIfNecessary(); 2071 } 2072 2073 @Override 2074 public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) { 2075 } 2076 2077 @Override 2078 public void onLauncherTransitionStep(Launcher l, float t) { 2079 mTransitionProgress = t; 2080 } 2081 2082 @Override 2083 public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) { 2084 mIsSwitchingState = false; 2085 updateChildrenLayersEnabled(false); 2086 showCustomContentIfNecessary(); 2087 } 2088 2089 void updateCustomContentVisibility() { 2090 int visibility = mState == Workspace.State.NORMAL ? VISIBLE : INVISIBLE; 2091 if (hasCustomContent()) { 2092 mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID).setVisibility(visibility); 2093 } 2094 } 2095 2096 void showCustomContentIfNecessary() { 2097 boolean show = mState == Workspace.State.NORMAL; 2098 if (show && hasCustomContent()) { 2099 mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID).setVisibility(VISIBLE); 2100 } 2101 } 2102 2103 void hideCustomContentIfNecessary() { 2104 boolean hide = mState != Workspace.State.NORMAL; 2105 if (hide && hasCustomContent()) { 2106 disableLayoutTransitions(); 2107 mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID).setVisibility(INVISIBLE); 2108 enableLayoutTransitions(); 2109 } 2110 } 2111 2112 /** 2113 * Returns the drawable for the given text view. 2114 */ 2115 public static Drawable getTextViewIcon(TextView tv) { 2116 final Drawable[] drawables = tv.getCompoundDrawables(); 2117 for (int i = 0; i < drawables.length; i++) { 2118 if (drawables[i] != null) { 2119 return drawables[i]; 2120 } 2121 } 2122 return null; 2123 } 2124 2125 /** 2126 * Draw the View v into the given Canvas. 2127 * 2128 * @param v the view to draw 2129 * @param destCanvas the canvas to draw on 2130 * @param padding the horizontal and vertical padding to use when drawing 2131 */ 2132 private static void drawDragView(View v, Canvas destCanvas, int padding) { 2133 final Rect clipRect = sTempRect; 2134 v.getDrawingRect(clipRect); 2135 2136 boolean textVisible = false; 2137 2138 destCanvas.save(); 2139 if (v instanceof TextView) { 2140 Drawable d = getTextViewIcon((TextView) v); 2141 Rect bounds = getDrawableBounds(d); 2142 clipRect.set(0, 0, bounds.width() + padding, bounds.height() + padding); 2143 destCanvas.translate(padding / 2 - bounds.left, padding / 2 - bounds.top); 2144 d.draw(destCanvas); 2145 } else { 2146 if (v instanceof FolderIcon) { 2147 // For FolderIcons the text can bleed into the icon area, and so we need to 2148 // hide the text completely (which can't be achieved by clipping). 2149 if (((FolderIcon) v).getTextVisible()) { 2150 ((FolderIcon) v).setTextVisible(false); 2151 textVisible = true; 2152 } 2153 } 2154 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 2155 destCanvas.clipRect(clipRect, Op.REPLACE); 2156 v.draw(destCanvas); 2157 2158 // Restore text visibility of FolderIcon if necessary 2159 if (textVisible) { 2160 ((FolderIcon) v).setTextVisible(true); 2161 } 2162 } 2163 destCanvas.restore(); 2164 } 2165 2166 /** 2167 * Returns a new bitmap to show when the given View is being dragged around. 2168 * Responsibility for the bitmap is transferred to the caller. 2169 * @param expectedPadding padding to add to the drag view. If a different padding was used 2170 * its value will be changed 2171 */ 2172 public Bitmap createDragBitmap(View v, AtomicInteger expectedPadding) { 2173 Bitmap b; 2174 2175 int padding = expectedPadding.get(); 2176 if (v instanceof TextView) { 2177 Drawable d = getTextViewIcon((TextView) v); 2178 Rect bounds = getDrawableBounds(d); 2179 b = Bitmap.createBitmap(bounds.width() + padding, 2180 bounds.height() + padding, Bitmap.Config.ARGB_8888); 2181 expectedPadding.set(padding - bounds.left - bounds.top); 2182 } else { 2183 b = Bitmap.createBitmap( 2184 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 2185 } 2186 2187 mCanvas.setBitmap(b); 2188 drawDragView(v, mCanvas, padding); 2189 mCanvas.setBitmap(null); 2190 2191 return b; 2192 } 2193 2194 /** 2195 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2196 * Responsibility for the bitmap is transferred to the caller. 2197 */ 2198 private Bitmap createDragOutline(View v, int padding) { 2199 final int outlineColor = getResources().getColor(R.color.outline_color); 2200 final Bitmap b = Bitmap.createBitmap( 2201 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 2202 2203 mCanvas.setBitmap(b); 2204 drawDragView(v, mCanvas, padding); 2205 mOutlineHelper.applyExpensiveOutlineWithBlur(b, mCanvas, outlineColor, outlineColor); 2206 mCanvas.setBitmap(null); 2207 return b; 2208 } 2209 2210 /** 2211 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2212 * Responsibility for the bitmap is transferred to the caller. 2213 */ 2214 private Bitmap createDragOutline(Bitmap orig, int padding, int w, int h, 2215 boolean clipAlpha) { 2216 final int outlineColor = getResources().getColor(R.color.outline_color); 2217 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 2218 mCanvas.setBitmap(b); 2219 2220 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 2221 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 2222 (h - padding) / (float) orig.getHeight()); 2223 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 2224 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 2225 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 2226 2227 // center the image 2228 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 2229 2230 mCanvas.drawBitmap(orig, src, dst, null); 2231 mOutlineHelper.applyExpensiveOutlineWithBlur(b, mCanvas, outlineColor, outlineColor, 2232 clipAlpha); 2233 mCanvas.setBitmap(null); 2234 2235 return b; 2236 } 2237 2238 public void startDrag(CellLayout.CellInfo cellInfo) { 2239 startDrag(cellInfo, false); 2240 } 2241 2242 @Override 2243 public void startDrag(CellLayout.CellInfo cellInfo, boolean accessible) { 2244 View child = cellInfo.cell; 2245 2246 // Make sure the drag was started by a long press as opposed to a long click. 2247 if (!child.isInTouchMode()) { 2248 return; 2249 } 2250 2251 mDragInfo = cellInfo; 2252 child.setVisibility(INVISIBLE); 2253 CellLayout layout = (CellLayout) child.getParent().getParent(); 2254 layout.prepareChildForDrag(child); 2255 2256 beginDragShared(child, this, accessible); 2257 } 2258 2259 public void beginDragShared(View child, DragSource source, boolean accessible) { 2260 beginDragShared(child, new Point(), source, accessible); 2261 } 2262 2263 public void beginDragShared(View child, Point relativeTouchPos, DragSource source, 2264 boolean accessible) { 2265 child.clearFocus(); 2266 child.setPressed(false); 2267 2268 // The outline is used to visualize where the item will land if dropped 2269 mDragOutline = createDragOutline(child, DRAG_BITMAP_PADDING); 2270 2271 mLauncher.onDragStarted(child); 2272 // The drag bitmap follows the touch point around on the screen 2273 AtomicInteger padding = new AtomicInteger(DRAG_BITMAP_PADDING); 2274 final Bitmap b = createDragBitmap(child, padding); 2275 2276 final int bmpWidth = b.getWidth(); 2277 final int bmpHeight = b.getHeight(); 2278 2279 float scale = mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 2280 int dragLayerX = Math.round(mTempXY[0] - (bmpWidth - scale * child.getWidth()) / 2); 2281 int dragLayerY = Math.round(mTempXY[1] - (bmpHeight - scale * bmpHeight) / 2 2282 - padding.get() / 2); 2283 2284 DeviceProfile grid = mLauncher.getDeviceProfile(); 2285 Point dragVisualizeOffset = null; 2286 Rect dragRect = null; 2287 if (child instanceof BubbleTextView) { 2288 BubbleTextView icon = (BubbleTextView) child; 2289 int iconSize = grid.iconSizePx; 2290 int top = child.getPaddingTop(); 2291 int left = (bmpWidth - iconSize) / 2; 2292 int right = left + iconSize; 2293 int bottom = top + iconSize; 2294 if (icon.isLayoutHorizontal()) { 2295 // If the layout is horizontal, then if we are just picking up the icon, then just 2296 // use the child position since the icon is top-left aligned. Otherwise, offset 2297 // the drag layer position horizontally so that the icon is under the current 2298 // touch position. 2299 if (icon.getIcon().getBounds().contains(relativeTouchPos.x, relativeTouchPos.y)) { 2300 dragLayerX = Math.round(mTempXY[0]); 2301 } else { 2302 dragLayerX = Math.round(mTempXY[0] + relativeTouchPos.x - (bmpWidth / 2)); 2303 } 2304 } 2305 dragLayerY += top; 2306 // Note: The drag region is used to calculate drag layer offsets, but the 2307 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 2308 dragVisualizeOffset = new Point(-padding.get() / 2, padding.get() / 2); 2309 dragRect = new Rect(left, top, right, bottom); 2310 } else if (child instanceof FolderIcon) { 2311 int previewSize = grid.folderIconSizePx; 2312 dragVisualizeOffset = new Point(-padding.get() / 2, 2313 padding.get() / 2 - child.getPaddingTop()); 2314 dragRect = new Rect(0, child.getPaddingTop(), child.getWidth(), previewSize); 2315 } 2316 2317 // Clear the pressed state if necessary 2318 if (child instanceof BubbleTextView) { 2319 BubbleTextView icon = (BubbleTextView) child; 2320 icon.clearPressedBackground(); 2321 } 2322 2323 if (child.getTag() == null || !(child.getTag() instanceof ItemInfo)) { 2324 String msg = "Drag started with a view that has no tag set. This " 2325 + "will cause a crash (issue 11627249) down the line. " 2326 + "View: " + child + " tag: " + child.getTag(); 2327 throw new IllegalStateException(msg); 2328 } 2329 2330 if (child.getParent() instanceof ShortcutAndWidgetContainer) { 2331 mDragSourceInternal = (ShortcutAndWidgetContainer) child.getParent(); 2332 } 2333 2334 DragView dv = mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 2335 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect, scale, accessible); 2336 dv.setIntrinsicIconScaleFactor(source.getIntrinsicIconScaleFactor()); 2337 2338 b.recycle(); 2339 } 2340 2341 public void beginExternalDragShared(View child, DragSource source) { 2342 DeviceProfile grid = mLauncher.getDeviceProfile(); 2343 int iconSize = grid.iconSizePx; 2344 2345 // Notify launcher of drag start 2346 mLauncher.onDragStarted(child); 2347 2348 // Compose a new drag bitmap that is of the icon size 2349 AtomicInteger padding = new AtomicInteger(DRAG_BITMAP_PADDING); 2350 final Bitmap tmpB = createDragBitmap(child, padding); 2351 Bitmap b = Bitmap.createBitmap(iconSize, iconSize, Bitmap.Config.ARGB_8888); 2352 Paint p = new Paint(); 2353 p.setFilterBitmap(true); 2354 mCanvas.setBitmap(b); 2355 mCanvas.drawBitmap(tmpB, new Rect(0, 0, tmpB.getWidth(), tmpB.getHeight()), 2356 new Rect(0, 0, iconSize, iconSize), p); 2357 mCanvas.setBitmap(null); 2358 2359 // Find the child's location on the screen 2360 int bmpWidth = tmpB.getWidth(); 2361 float iconScale = (float) bmpWidth / iconSize; 2362 float scale = mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY) * iconScale; 2363 int dragLayerX = Math.round(mTempXY[0] - (bmpWidth - scale * child.getWidth()) / 2); 2364 int dragLayerY = Math.round(mTempXY[1]); 2365 2366 // Note: The drag region is used to calculate drag layer offsets, but the 2367 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 2368 Point dragVisualizeOffset = new Point(-padding.get() / 2, padding.get() / 2); 2369 Rect dragRect = new Rect(0, 0, iconSize, iconSize); 2370 2371 if (child.getTag() == null || !(child.getTag() instanceof ItemInfo)) { 2372 String msg = "Drag started with a view that has no tag set. This " 2373 + "will cause a crash (issue 11627249) down the line. " 2374 + "View: " + child + " tag: " + child.getTag(); 2375 throw new IllegalStateException(msg); 2376 } 2377 2378 // Start the drag 2379 DragView dv = mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 2380 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect, scale, false); 2381 dv.setIntrinsicIconScaleFactor(source.getIntrinsicIconScaleFactor()); 2382 2383 // Recycle temporary bitmaps 2384 tmpB.recycle(); 2385 } 2386 2387 public boolean transitionStateShouldAllowDrop() { 2388 return ((!isSwitchingState() || mTransitionProgress > 0.5f) && 2389 (mState == State.NORMAL || mState == State.SPRING_LOADED)); 2390 } 2391 2392 /** 2393 * {@inheritDoc} 2394 */ 2395 public boolean acceptDrop(DragObject d) { 2396 // If it's an external drop (e.g. from All Apps), check if it should be accepted 2397 CellLayout dropTargetLayout = mDropToLayout; 2398 if (d.dragSource != this) { 2399 // Don't accept the drop if we're not over a screen at time of drop 2400 if (dropTargetLayout == null) { 2401 return false; 2402 } 2403 if (!transitionStateShouldAllowDrop()) return false; 2404 2405 mDragViewVisualCenter = d.getVisualCenter(mDragViewVisualCenter); 2406 2407 // We want the point to be mapped to the dragTarget. 2408 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 2409 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2410 } else { 2411 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 2412 } 2413 2414 int spanX = 1; 2415 int spanY = 1; 2416 if (mDragInfo != null) { 2417 final CellLayout.CellInfo dragCellInfo = mDragInfo; 2418 spanX = dragCellInfo.spanX; 2419 spanY = dragCellInfo.spanY; 2420 } else { 2421 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 2422 spanX = dragInfo.spanX; 2423 spanY = dragInfo.spanY; 2424 } 2425 2426 int minSpanX = spanX; 2427 int minSpanY = spanY; 2428 if (d.dragInfo instanceof PendingAddWidgetInfo) { 2429 minSpanX = ((PendingAddWidgetInfo) d.dragInfo).minSpanX; 2430 minSpanY = ((PendingAddWidgetInfo) d.dragInfo).minSpanY; 2431 } 2432 2433 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2434 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, dropTargetLayout, 2435 mTargetCell); 2436 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2437 mDragViewVisualCenter[1], mTargetCell); 2438 if (mCreateUserFolderOnDrop && willCreateUserFolder((ItemInfo) d.dragInfo, 2439 dropTargetLayout, mTargetCell, distance, true)) { 2440 return true; 2441 } 2442 2443 if (mAddToExistingFolderOnDrop && willAddToExistingUserFolder((ItemInfo) d.dragInfo, 2444 dropTargetLayout, mTargetCell, distance)) { 2445 return true; 2446 } 2447 2448 int[] resultSpan = new int[2]; 2449 mTargetCell = dropTargetLayout.performReorder((int) mDragViewVisualCenter[0], 2450 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2451 null, mTargetCell, resultSpan, CellLayout.MODE_ACCEPT_DROP); 2452 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2453 2454 // Don't accept the drop if there's no room for the item 2455 if (!foundCell) { 2456 // Don't show the message if we are dropping on the AllApps button and the hotseat 2457 // is full 2458 boolean isHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2459 if (mTargetCell != null && isHotseat) { 2460 Hotseat hotseat = mLauncher.getHotseat(); 2461 if (hotseat.isAllAppsButtonRank( 2462 hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { 2463 return false; 2464 } 2465 } 2466 2467 mLauncher.showOutOfSpaceMessage(isHotseat); 2468 return false; 2469 } 2470 } 2471 2472 long screenId = getIdForScreen(dropTargetLayout); 2473 if (screenId == EXTRA_EMPTY_SCREEN_ID) { 2474 commitExtraEmptyScreen(); 2475 } 2476 2477 return true; 2478 } 2479 2480 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, 2481 float distance, boolean considerTimeout) { 2482 if (distance > mMaxDistanceForFolderCreation) return false; 2483 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2484 return willCreateUserFolder(info, dropOverView, considerTimeout); 2485 } 2486 2487 boolean willCreateUserFolder(ItemInfo info, View dropOverView, boolean considerTimeout) { 2488 if (dropOverView != null) { 2489 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2490 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2491 return false; 2492 } 2493 } 2494 2495 boolean hasntMoved = false; 2496 if (mDragInfo != null) { 2497 hasntMoved = dropOverView == mDragInfo.cell; 2498 } 2499 2500 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2501 return false; 2502 } 2503 2504 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2505 boolean willBecomeShortcut = 2506 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2507 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2508 2509 return (aboveShortcut && willBecomeShortcut); 2510 } 2511 2512 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell, 2513 float distance) { 2514 if (distance > mMaxDistanceForFolderCreation) return false; 2515 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2516 return willAddToExistingUserFolder(dragInfo, dropOverView); 2517 2518 } 2519 boolean willAddToExistingUserFolder(Object dragInfo, View dropOverView) { 2520 if (dropOverView != null) { 2521 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2522 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2523 return false; 2524 } 2525 } 2526 2527 if (dropOverView instanceof FolderIcon) { 2528 FolderIcon fi = (FolderIcon) dropOverView; 2529 if (fi.acceptDrop(dragInfo)) { 2530 return true; 2531 } 2532 } 2533 return false; 2534 } 2535 2536 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2537 int[] targetCell, float distance, boolean external, DragView dragView, 2538 Runnable postAnimationRunnable) { 2539 if (distance > mMaxDistanceForFolderCreation) return false; 2540 View v = target.getChildAt(targetCell[0], targetCell[1]); 2541 2542 boolean hasntMoved = false; 2543 if (mDragInfo != null) { 2544 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2545 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2546 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2547 } 2548 2549 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2550 mCreateUserFolderOnDrop = false; 2551 final long screenId = (targetCell == null) ? mDragInfo.screenId : getIdForScreen(target); 2552 2553 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2554 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2555 2556 if (aboveShortcut && willBecomeShortcut) { 2557 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2558 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2559 // if the drag started here, we need to remove it from the workspace 2560 if (!external) { 2561 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2562 } 2563 2564 Rect folderLocation = new Rect(); 2565 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2566 target.removeView(v); 2567 2568 FolderIcon fi = 2569 mLauncher.addFolder(target, container, screenId, targetCell[0], targetCell[1]); 2570 destInfo.cellX = -1; 2571 destInfo.cellY = -1; 2572 sourceInfo.cellX = -1; 2573 sourceInfo.cellY = -1; 2574 2575 // If the dragView is null, we can't animate 2576 boolean animate = dragView != null; 2577 if (animate) { 2578 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2579 postAnimationRunnable); 2580 } else { 2581 fi.addItem(destInfo); 2582 fi.addItem(sourceInfo); 2583 } 2584 return true; 2585 } 2586 return false; 2587 } 2588 2589 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2590 float distance, DragObject d, boolean external) { 2591 if (distance > mMaxDistanceForFolderCreation) return false; 2592 2593 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2594 if (!mAddToExistingFolderOnDrop) return false; 2595 mAddToExistingFolderOnDrop = false; 2596 2597 if (dropOverView instanceof FolderIcon) { 2598 FolderIcon fi = (FolderIcon) dropOverView; 2599 if (fi.acceptDrop(d.dragInfo)) { 2600 fi.onDrop(d); 2601 2602 // if the drag started here, we need to remove it from the workspace 2603 if (!external) { 2604 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2605 } 2606 return true; 2607 } 2608 } 2609 return false; 2610 } 2611 2612 @Override 2613 public void prepareAccessibilityDrop() { } 2614 2615 public void onDrop(final DragObject d) { 2616 mDragViewVisualCenter = d.getVisualCenter(mDragViewVisualCenter); 2617 CellLayout dropTargetLayout = mDropToLayout; 2618 2619 // We want the point to be mapped to the dragTarget. 2620 if (dropTargetLayout != null) { 2621 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 2622 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2623 } else { 2624 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 2625 } 2626 } 2627 2628 int snapScreen = WorkspaceStateTransitionAnimation.SCROLL_TO_CURRENT_PAGE; 2629 boolean resizeOnDrop = false; 2630 if (d.dragSource != this) { 2631 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2632 (int) mDragViewVisualCenter[1] }; 2633 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2634 } else if (mDragInfo != null) { 2635 final View cell = mDragInfo.cell; 2636 2637 Runnable resizeRunnable = null; 2638 if (dropTargetLayout != null && !d.cancelled) { 2639 // Move internally 2640 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2641 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2642 long container = hasMovedIntoHotseat ? 2643 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2644 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2645 long screenId = (mTargetCell[0] < 0) ? 2646 mDragInfo.screenId : getIdForScreen(dropTargetLayout); 2647 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2648 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2649 // First we find the cell nearest to point at which the item is 2650 // dropped, without any consideration to whether there is an item there. 2651 2652 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2653 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2654 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2655 mDragViewVisualCenter[1], mTargetCell); 2656 2657 // If the item being dropped is a shortcut and the nearest drop 2658 // cell also contains a shortcut, then create a folder with the two shortcuts. 2659 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2660 dropTargetLayout, mTargetCell, distance, false, d.dragView, null)) { 2661 return; 2662 } 2663 2664 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, 2665 distance, d, false)) { 2666 return; 2667 } 2668 2669 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2670 // we need to find the nearest cell location that is vacant 2671 ItemInfo item = (ItemInfo) d.dragInfo; 2672 int minSpanX = item.spanX; 2673 int minSpanY = item.spanY; 2674 if (item.minSpanX > 0 && item.minSpanY > 0) { 2675 minSpanX = item.minSpanX; 2676 minSpanY = item.minSpanY; 2677 } 2678 2679 int[] resultSpan = new int[2]; 2680 mTargetCell = dropTargetLayout.performReorder((int) mDragViewVisualCenter[0], 2681 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, cell, 2682 mTargetCell, resultSpan, CellLayout.MODE_ON_DROP); 2683 2684 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2685 2686 // if the widget resizes on drop 2687 if (foundCell && (cell instanceof AppWidgetHostView) && 2688 (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY)) { 2689 resizeOnDrop = true; 2690 item.spanX = resultSpan[0]; 2691 item.spanY = resultSpan[1]; 2692 AppWidgetHostView awhv = (AppWidgetHostView) cell; 2693 AppWidgetResizeFrame.updateWidgetSizeRanges(awhv, mLauncher, resultSpan[0], 2694 resultSpan[1]); 2695 } 2696 2697 if (getScreenIdForPageIndex(mCurrentPage) != screenId && !hasMovedIntoHotseat) { 2698 snapScreen = getPageIndexForScreenId(screenId); 2699 snapToPage(snapScreen); 2700 } 2701 2702 if (foundCell) { 2703 final ItemInfo info = (ItemInfo) cell.getTag(); 2704 if (hasMovedLayouts) { 2705 // Reparent the view 2706 CellLayout parentCell = getParentCellLayoutForView(cell); 2707 if (parentCell != null) { 2708 parentCell.removeView(cell); 2709 } else if (LauncherAppState.isDogfoodBuild()) { 2710 throw new NullPointerException("mDragInfo.cell has null parent"); 2711 } 2712 addInScreen(cell, container, screenId, mTargetCell[0], mTargetCell[1], 2713 info.spanX, info.spanY); 2714 } 2715 2716 // update the item's position after drop 2717 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2718 lp.cellX = lp.tmpCellX = mTargetCell[0]; 2719 lp.cellY = lp.tmpCellY = mTargetCell[1]; 2720 lp.cellHSpan = item.spanX; 2721 lp.cellVSpan = item.spanY; 2722 lp.isLockedToGrid = true; 2723 2724 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2725 cell instanceof LauncherAppWidgetHostView) { 2726 final CellLayout cellLayout = dropTargetLayout; 2727 // We post this call so that the widget has a chance to be placed 2728 // in its final location 2729 2730 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2731 AppWidgetProviderInfo pInfo = hostView.getAppWidgetInfo(); 2732 if (pInfo != null && pInfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE 2733 && !d.accessibleDrag) { 2734 final Runnable addResizeFrame = new Runnable() { 2735 public void run() { 2736 DragLayer dragLayer = mLauncher.getDragLayer(); 2737 dragLayer.addResizeFrame(info, hostView, cellLayout); 2738 } 2739 }; 2740 resizeRunnable = (new Runnable() { 2741 public void run() { 2742 if (!isPageMoving()) { 2743 addResizeFrame.run(); 2744 } else { 2745 mDelayedResizeRunnable = addResizeFrame; 2746 } 2747 } 2748 }); 2749 } 2750 } 2751 2752 LauncherModel.modifyItemInDatabase(mLauncher, info, container, screenId, lp.cellX, 2753 lp.cellY, item.spanX, item.spanY); 2754 } else { 2755 // If we can't find a drop location, we return the item to its original position 2756 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2757 mTargetCell[0] = lp.cellX; 2758 mTargetCell[1] = lp.cellY; 2759 CellLayout layout = (CellLayout) cell.getParent().getParent(); 2760 layout.markCellsAsOccupiedForView(cell); 2761 } 2762 } 2763 2764 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2765 final Runnable finalResizeRunnable = resizeRunnable; 2766 // Prepare it to be animated into its new position 2767 // This must be called after the view has been re-parented 2768 final Runnable onCompleteRunnable = new Runnable() { 2769 @Override 2770 public void run() { 2771 mAnimatingViewIntoPlace = false; 2772 updateChildrenLayersEnabled(false); 2773 if (finalResizeRunnable != null) { 2774 finalResizeRunnable.run(); 2775 } 2776 } 2777 }; 2778 mAnimatingViewIntoPlace = true; 2779 if (d.dragView.hasDrawn()) { 2780 final ItemInfo info = (ItemInfo) cell.getTag(); 2781 boolean isWidget = info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET 2782 || info.itemType == LauncherSettings.Favorites.ITEM_TYPE_CUSTOM_APPWIDGET; 2783 if (isWidget) { 2784 int animationType = resizeOnDrop ? ANIMATE_INTO_POSITION_AND_RESIZE : 2785 ANIMATE_INTO_POSITION_AND_DISAPPEAR; 2786 animateWidgetDrop(info, parent, d.dragView, 2787 onCompleteRunnable, animationType, cell, false); 2788 } else { 2789 int duration = snapScreen < 0 ? 2790 WorkspaceStateTransitionAnimation.SCROLL_TO_CURRENT_PAGE : 2791 ADJACENT_SCREEN_DROP_DURATION; 2792 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2793 onCompleteRunnable, this); 2794 } 2795 } else { 2796 d.deferDragViewCleanupPostAnimation = false; 2797 cell.setVisibility(VISIBLE); 2798 } 2799 parent.onDropChild(cell); 2800 } 2801 } 2802 2803 /** 2804 * Computes the area relative to dragLayer which is used to display a page. 2805 */ 2806 public void getPageAreaRelativeToDragLayer(Rect outArea) { 2807 CellLayout child = (CellLayout) getChildAt(getNextPage()); 2808 if (child == null) { 2809 return; 2810 } 2811 ShortcutAndWidgetContainer boundingLayout = child.getShortcutsAndWidgets(); 2812 2813 // Use the absolute left instead of the child left, as we want the visible area 2814 // irrespective of the visible child. Since the view can only scroll horizontally, the 2815 // top position is not affected. 2816 mTempXY[0] = getViewportOffsetX() + getPaddingLeft() + boundingLayout.getLeft(); 2817 mTempXY[1] = child.getTop() + boundingLayout.getTop(); 2818 2819 float scale = mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(this, mTempXY); 2820 outArea.set(mTempXY[0], mTempXY[1], 2821 (int) (mTempXY[0] + scale * boundingLayout.getMeasuredWidth()), 2822 (int) (mTempXY[1] + scale * boundingLayout.getMeasuredHeight())); 2823 } 2824 2825 public void getViewLocationRelativeToSelf(View v, int[] location) { 2826 getLocationInWindow(location); 2827 int x = location[0]; 2828 int y = location[1]; 2829 2830 v.getLocationInWindow(location); 2831 int vX = location[0]; 2832 int vY = location[1]; 2833 2834 location[0] = vX - x; 2835 location[1] = vY - y; 2836 } 2837 2838 @Override 2839 public void onDragEnter(DragObject d) { 2840 if (ENFORCE_DRAG_EVENT_ORDER) { 2841 enfoceDragParity("onDragEnter", 1, 1); 2842 } 2843 2844 mCreateUserFolderOnDrop = false; 2845 mAddToExistingFolderOnDrop = false; 2846 2847 mDropToLayout = null; 2848 CellLayout layout = getCurrentDropLayout(); 2849 setCurrentDropLayout(layout); 2850 setCurrentDragOverlappingLayout(layout); 2851 2852 if (!workspaceInModalState()) { 2853 mLauncher.getDragLayer().showPageHints(); 2854 } 2855 } 2856 2857 /** Return a rect that has the cellWidth/cellHeight (left, top), and 2858 * widthGap/heightGap (right, bottom) */ 2859 static Rect getCellLayoutMetrics(Launcher launcher, int orientation) { 2860 LauncherAppState app = LauncherAppState.getInstance(); 2861 InvariantDeviceProfile inv = app.getInvariantDeviceProfile(); 2862 2863 Display display = launcher.getWindowManager().getDefaultDisplay(); 2864 Point smallestSize = new Point(); 2865 Point largestSize = new Point(); 2866 display.getCurrentSizeRange(smallestSize, largestSize); 2867 int countX = (int) inv.numColumns; 2868 int countY = (int) inv.numRows; 2869 boolean isLayoutRtl = Utilities.isRtl(launcher.getResources()); 2870 if (orientation == CellLayout.LANDSCAPE) { 2871 if (mLandscapeCellLayoutMetrics == null) { 2872 Rect padding = inv.landscapeProfile.getWorkspacePadding(isLayoutRtl); 2873 int width = largestSize.x - padding.left - padding.right; 2874 int height = smallestSize.y - padding.top - padding.bottom; 2875 mLandscapeCellLayoutMetrics = new Rect(); 2876 mLandscapeCellLayoutMetrics.set( 2877 DeviceProfile.calculateCellWidth(width, countX), 2878 DeviceProfile.calculateCellHeight(height, countY), 0, 0); 2879 } 2880 return mLandscapeCellLayoutMetrics; 2881 } else if (orientation == CellLayout.PORTRAIT) { 2882 if (mPortraitCellLayoutMetrics == null) { 2883 Rect padding = inv.portraitProfile.getWorkspacePadding(isLayoutRtl); 2884 int width = smallestSize.x - padding.left - padding.right; 2885 int height = largestSize.y - padding.top - padding.bottom; 2886 mPortraitCellLayoutMetrics = new Rect(); 2887 mPortraitCellLayoutMetrics.set( 2888 DeviceProfile.calculateCellWidth(width, countX), 2889 DeviceProfile.calculateCellHeight(height, countY), 0, 0); 2890 } 2891 return mPortraitCellLayoutMetrics; 2892 } 2893 return null; 2894 } 2895 2896 @Override 2897 public void onDragExit(DragObject d) { 2898 if (ENFORCE_DRAG_EVENT_ORDER) { 2899 enfoceDragParity("onDragExit", -1, 0); 2900 } 2901 2902 // Here we store the final page that will be dropped to, if the workspace in fact 2903 // receives the drop 2904 if (mInScrollArea) { 2905 if (isPageMoving()) { 2906 // If the user drops while the page is scrolling, we should use that page as the 2907 // destination instead of the page that is being hovered over. 2908 mDropToLayout = (CellLayout) getPageAt(getNextPage()); 2909 } else { 2910 mDropToLayout = mDragOverlappingLayout; 2911 } 2912 } else { 2913 mDropToLayout = mDragTargetLayout; 2914 } 2915 2916 if (mDragMode == DRAG_MODE_CREATE_FOLDER) { 2917 mCreateUserFolderOnDrop = true; 2918 } else if (mDragMode == DRAG_MODE_ADD_TO_FOLDER) { 2919 mAddToExistingFolderOnDrop = true; 2920 } 2921 2922 // Reset the scroll area and previous drag target 2923 onResetScrollArea(); 2924 setCurrentDropLayout(null); 2925 setCurrentDragOverlappingLayout(null); 2926 2927 mSpringLoadedDragController.cancel(); 2928 2929 mLauncher.getDragLayer().hidePageHints(); 2930 } 2931 2932 private void enfoceDragParity(String event, int update, int expectedValue) { 2933 enfoceDragParity(this, event, update, expectedValue); 2934 for (int i = 0; i < getChildCount(); i++) { 2935 enfoceDragParity(getChildAt(i), event, update, expectedValue); 2936 } 2937 } 2938 2939 private void enfoceDragParity(View v, String event, int update, int expectedValue) { 2940 Object tag = v.getTag(R.id.drag_event_parity); 2941 int value = tag == null ? 0 : (Integer) tag; 2942 value += update; 2943 v.setTag(R.id.drag_event_parity, value); 2944 2945 if (value != expectedValue) { 2946 Log.e(TAG, event + ": Drag contract violated: " + value); 2947 } 2948 } 2949 2950 void setCurrentDropLayout(CellLayout layout) { 2951 if (mDragTargetLayout != null) { 2952 mDragTargetLayout.revertTempState(); 2953 mDragTargetLayout.onDragExit(); 2954 } 2955 mDragTargetLayout = layout; 2956 if (mDragTargetLayout != null) { 2957 mDragTargetLayout.onDragEnter(); 2958 } 2959 cleanupReorder(true); 2960 cleanupFolderCreation(); 2961 setCurrentDropOverCell(-1, -1); 2962 } 2963 2964 void setCurrentDragOverlappingLayout(CellLayout layout) { 2965 if (mDragOverlappingLayout != null) { 2966 mDragOverlappingLayout.setIsDragOverlapping(false); 2967 } 2968 mDragOverlappingLayout = layout; 2969 if (mDragOverlappingLayout != null) { 2970 mDragOverlappingLayout.setIsDragOverlapping(true); 2971 } 2972 invalidate(); 2973 } 2974 2975 void setCurrentDropOverCell(int x, int y) { 2976 if (x != mDragOverX || y != mDragOverY) { 2977 mDragOverX = x; 2978 mDragOverY = y; 2979 setDragMode(DRAG_MODE_NONE); 2980 } 2981 } 2982 2983 void setDragMode(int dragMode) { 2984 if (dragMode != mDragMode) { 2985 if (dragMode == DRAG_MODE_NONE) { 2986 cleanupAddToFolder(); 2987 // We don't want to cancel the re-order alarm every time the target cell changes 2988 // as this feels to slow / unresponsive. 2989 cleanupReorder(false); 2990 cleanupFolderCreation(); 2991 } else if (dragMode == DRAG_MODE_ADD_TO_FOLDER) { 2992 cleanupReorder(true); 2993 cleanupFolderCreation(); 2994 } else if (dragMode == DRAG_MODE_CREATE_FOLDER) { 2995 cleanupAddToFolder(); 2996 cleanupReorder(true); 2997 } else if (dragMode == DRAG_MODE_REORDER) { 2998 cleanupAddToFolder(); 2999 cleanupFolderCreation(); 3000 } 3001 mDragMode = dragMode; 3002 } 3003 } 3004 3005 private void cleanupFolderCreation() { 3006 if (mDragFolderRingAnimator != null) { 3007 mDragFolderRingAnimator.animateToNaturalState(); 3008 mDragFolderRingAnimator = null; 3009 } 3010 mFolderCreationAlarm.setOnAlarmListener(null); 3011 mFolderCreationAlarm.cancelAlarm(); 3012 } 3013 3014 private void cleanupAddToFolder() { 3015 if (mDragOverFolderIcon != null) { 3016 mDragOverFolderIcon.onDragExit(null); 3017 mDragOverFolderIcon = null; 3018 } 3019 } 3020 3021 private void cleanupReorder(boolean cancelAlarm) { 3022 // Any pending reorders are canceled 3023 if (cancelAlarm) { 3024 mReorderAlarm.cancelAlarm(); 3025 } 3026 mLastReorderX = -1; 3027 mLastReorderY = -1; 3028 } 3029 3030 /* 3031 * 3032 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 3033 * coordinate space. The argument xy is modified with the return result. 3034 * 3035 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 3036 * computing it itself; we use this to avoid redundant matrix inversions in 3037 * findMatchingPageForDragOver 3038 * 3039 */ 3040 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 3041 xy[0] = xy[0] - v.getLeft(); 3042 xy[1] = xy[1] - v.getTop(); 3043 } 3044 3045 boolean isPointInSelfOverHotseat(int x, int y, Rect r) { 3046 if (r == null) { 3047 r = new Rect(); 3048 } 3049 mTempPt[0] = x; 3050 mTempPt[1] = y; 3051 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(this, mTempPt, true); 3052 3053 DeviceProfile grid = mLauncher.getDeviceProfile(); 3054 r = grid.getHotseatRect(); 3055 if (r.contains(mTempPt[0], mTempPt[1])) { 3056 return true; 3057 } 3058 return false; 3059 } 3060 3061 void mapPointFromSelfToHotseatLayout(Hotseat hotseat, float[] xy) { 3062 mTempPt[0] = (int) xy[0]; 3063 mTempPt[1] = (int) xy[1]; 3064 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(this, mTempPt, true); 3065 mLauncher.getDragLayer().mapCoordInSelfToDescendent(hotseat.getLayout(), mTempPt); 3066 3067 xy[0] = mTempPt[0]; 3068 xy[1] = mTempPt[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 // Transform the touch coordinates to the CellLayout's local coordinates 3115 // If the touch point is within the bounds of the cell layout, we can return immediately 3116 cl.getMatrix().invert(mTempInverseMatrix); 3117 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 3118 3119 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 3120 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 3121 return cl; 3122 } 3123 3124 if (!exact) { 3125 // Get the center of the cell layout in screen coordinates 3126 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 3127 cellLayoutCenter[0] = cl.getWidth()/2; 3128 cellLayoutCenter[1] = cl.getHeight()/2; 3129 mapPointFromChildToSelf(cl, cellLayoutCenter); 3130 3131 touchXy[0] = originX; 3132 touchXy[1] = originY; 3133 3134 // Calculate the distance between the center of the CellLayout 3135 // and the touch point 3136 float dist = squaredDistance(touchXy, cellLayoutCenter); 3137 3138 if (dist < smallestDistSoFar) { 3139 smallestDistSoFar = dist; 3140 bestMatchingScreen = cl; 3141 } 3142 } 3143 } 3144 return bestMatchingScreen; 3145 } 3146 3147 private boolean isDragWidget(DragObject d) { 3148 return (d.dragInfo instanceof LauncherAppWidgetInfo || 3149 d.dragInfo instanceof PendingAddWidgetInfo); 3150 } 3151 private boolean isExternalDragWidget(DragObject d) { 3152 return d.dragSource != this && isDragWidget(d); 3153 } 3154 3155 public void onDragOver(DragObject d) { 3156 // Skip drag over events while we are dragging over side pages 3157 if (mInScrollArea || !transitionStateShouldAllowDrop()) return; 3158 3159 Rect r = new Rect(); 3160 CellLayout layout = null; 3161 ItemInfo item = (ItemInfo) d.dragInfo; 3162 if (item == null) { 3163 if (LauncherAppState.isDogfoodBuild()) { 3164 throw new NullPointerException("DragObject has null info"); 3165 } 3166 return; 3167 } 3168 3169 // Ensure that we have proper spans for the item that we are dropping 3170 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 3171 mDragViewVisualCenter = d.getVisualCenter(mDragViewVisualCenter); 3172 3173 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 3174 // Identify whether we have dragged over a side page 3175 if (workspaceInModalState()) { 3176 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 3177 if (isPointInSelfOverHotseat(d.x, d.y, r)) { 3178 layout = mLauncher.getHotseat().getLayout(); 3179 } 3180 } 3181 if (layout == null) { 3182 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false); 3183 } 3184 if (layout != mDragTargetLayout) { 3185 setCurrentDropLayout(layout); 3186 setCurrentDragOverlappingLayout(layout); 3187 3188 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 3189 if (isInSpringLoadedMode) { 3190 if (mLauncher.isHotseatLayout(layout)) { 3191 mSpringLoadedDragController.cancel(); 3192 } else { 3193 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 3194 } 3195 } 3196 } 3197 } else { 3198 // Test to see if we are over the hotseat otherwise just use the current page 3199 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 3200 if (isPointInSelfOverHotseat(d.x, d.y, r)) { 3201 layout = mLauncher.getHotseat().getLayout(); 3202 } 3203 } 3204 if (layout == null) { 3205 layout = getCurrentDropLayout(); 3206 } 3207 if (layout != mDragTargetLayout) { 3208 setCurrentDropLayout(layout); 3209 setCurrentDragOverlappingLayout(layout); 3210 } 3211 } 3212 3213 // Handle the drag over 3214 if (mDragTargetLayout != null) { 3215 // We want the point to be mapped to the dragTarget. 3216 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 3217 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 3218 } else { 3219 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 3220 } 3221 3222 int minSpanX = item.spanX; 3223 int minSpanY = item.spanY; 3224 if (item.minSpanX > 0 && item.minSpanY > 0) { 3225 minSpanX = item.minSpanX; 3226 minSpanY = item.minSpanY; 3227 } 3228 3229 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 3230 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, 3231 mDragTargetLayout, mTargetCell); 3232 int reorderX = mTargetCell[0]; 3233 int reorderY = mTargetCell[1]; 3234 3235 setCurrentDropOverCell(mTargetCell[0], mTargetCell[1]); 3236 3237 float targetCellDistance = mDragTargetLayout.getDistanceFromCell( 3238 mDragViewVisualCenter[0], mDragViewVisualCenter[1], mTargetCell); 3239 3240 manageFolderFeedback(mDragTargetLayout, mTargetCell, targetCellDistance, d); 3241 3242 boolean nearestDropOccupied = mDragTargetLayout.isNearestDropLocationOccupied((int) 3243 mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], item.spanX, 3244 item.spanY, child, mTargetCell); 3245 3246 if (!nearestDropOccupied) { 3247 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 3248 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 3249 mTargetCell[0], mTargetCell[1], item.spanX, item.spanY, false, d); 3250 } else if ((mDragMode == DRAG_MODE_NONE || mDragMode == DRAG_MODE_REORDER) 3251 && !mReorderAlarm.alarmPending() && (mLastReorderX != reorderX || 3252 mLastReorderY != reorderY)) { 3253 3254 int[] resultSpan = new int[2]; 3255 mDragTargetLayout.performReorder((int) mDragViewVisualCenter[0], 3256 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, item.spanX, item.spanY, 3257 child, mTargetCell, resultSpan, CellLayout.MODE_SHOW_REORDER_HINT); 3258 3259 // Otherwise, if we aren't adding to or creating a folder and there's no pending 3260 // reorder, then we schedule a reorder 3261 ReorderAlarmListener listener = new ReorderAlarmListener(mDragViewVisualCenter, 3262 minSpanX, minSpanY, item.spanX, item.spanY, d, child); 3263 mReorderAlarm.setOnAlarmListener(listener); 3264 mReorderAlarm.setAlarm(REORDER_TIMEOUT); 3265 } 3266 3267 if (mDragMode == DRAG_MODE_CREATE_FOLDER || mDragMode == DRAG_MODE_ADD_TO_FOLDER || 3268 !nearestDropOccupied) { 3269 if (mDragTargetLayout != null) { 3270 mDragTargetLayout.revertTempState(); 3271 } 3272 } 3273 } 3274 } 3275 3276 private void manageFolderFeedback(CellLayout targetLayout, 3277 int[] targetCell, float distance, DragObject dragObject) { 3278 if (distance > mMaxDistanceForFolderCreation) return; 3279 3280 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], mTargetCell[1]); 3281 ItemInfo info = (ItemInfo) dragObject.dragInfo; 3282 boolean userFolderPending = willCreateUserFolder(info, dragOverView, false); 3283 if (mDragMode == DRAG_MODE_NONE && userFolderPending && 3284 !mFolderCreationAlarm.alarmPending()) { 3285 3286 FolderCreationAlarmListener listener = new 3287 FolderCreationAlarmListener(targetLayout, targetCell[0], targetCell[1]); 3288 3289 if (!dragObject.accessibleDrag) { 3290 mFolderCreationAlarm.setOnAlarmListener(listener); 3291 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 3292 } else { 3293 listener.onAlarm(mFolderCreationAlarm); 3294 } 3295 3296 if (dragObject.stateAnnouncer != null) { 3297 dragObject.stateAnnouncer.announce(WorkspaceAccessibilityHelper 3298 .getDescriptionForDropOver(dragOverView, getContext())); 3299 } 3300 return; 3301 } 3302 3303 boolean willAddToFolder = willAddToExistingUserFolder(info, dragOverView); 3304 if (willAddToFolder && mDragMode == DRAG_MODE_NONE) { 3305 mDragOverFolderIcon = ((FolderIcon) dragOverView); 3306 mDragOverFolderIcon.onDragEnter(info); 3307 if (targetLayout != null) { 3308 targetLayout.clearDragOutlines(); 3309 } 3310 setDragMode(DRAG_MODE_ADD_TO_FOLDER); 3311 3312 if (dragObject.stateAnnouncer != null) { 3313 dragObject.stateAnnouncer.announce(WorkspaceAccessibilityHelper 3314 .getDescriptionForDropOver(dragOverView, getContext())); 3315 } 3316 return; 3317 } 3318 3319 if (mDragMode == DRAG_MODE_ADD_TO_FOLDER && !willAddToFolder) { 3320 setDragMode(DRAG_MODE_NONE); 3321 } 3322 if (mDragMode == DRAG_MODE_CREATE_FOLDER && !userFolderPending) { 3323 setDragMode(DRAG_MODE_NONE); 3324 } 3325 } 3326 3327 class FolderCreationAlarmListener implements OnAlarmListener { 3328 CellLayout layout; 3329 int cellX; 3330 int cellY; 3331 3332 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 3333 this.layout = layout; 3334 this.cellX = cellX; 3335 this.cellY = cellY; 3336 } 3337 3338 public void onAlarm(Alarm alarm) { 3339 if (mDragFolderRingAnimator != null) { 3340 // This shouldn't happen ever, but just in case, make sure we clean up the mess. 3341 mDragFolderRingAnimator.animateToNaturalState(); 3342 } 3343 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 3344 mDragFolderRingAnimator.setCell(cellX, cellY); 3345 mDragFolderRingAnimator.setCellLayout(layout); 3346 mDragFolderRingAnimator.animateToAcceptState(); 3347 layout.showFolderAccept(mDragFolderRingAnimator); 3348 layout.clearDragOutlines(); 3349 setDragMode(DRAG_MODE_CREATE_FOLDER); 3350 } 3351 } 3352 3353 class ReorderAlarmListener implements OnAlarmListener { 3354 float[] dragViewCenter; 3355 int minSpanX, minSpanY, spanX, spanY; 3356 DragObject dragObject; 3357 View child; 3358 3359 public ReorderAlarmListener(float[] dragViewCenter, int minSpanX, int minSpanY, int spanX, 3360 int spanY, DragObject dragObject, View child) { 3361 this.dragViewCenter = dragViewCenter; 3362 this.minSpanX = minSpanX; 3363 this.minSpanY = minSpanY; 3364 this.spanX = spanX; 3365 this.spanY = spanY; 3366 this.child = child; 3367 this.dragObject = dragObject; 3368 } 3369 3370 public void onAlarm(Alarm alarm) { 3371 int[] resultSpan = new int[2]; 3372 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 3373 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, mDragTargetLayout, 3374 mTargetCell); 3375 mLastReorderX = mTargetCell[0]; 3376 mLastReorderY = mTargetCell[1]; 3377 3378 mTargetCell = mDragTargetLayout.performReorder((int) mDragViewVisualCenter[0], 3379 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 3380 child, mTargetCell, resultSpan, CellLayout.MODE_DRAG_OVER); 3381 3382 if (mTargetCell[0] < 0 || mTargetCell[1] < 0) { 3383 mDragTargetLayout.revertTempState(); 3384 } else { 3385 setDragMode(DRAG_MODE_REORDER); 3386 } 3387 3388 boolean resize = resultSpan[0] != spanX || resultSpan[1] != spanY; 3389 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 3390 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 3391 mTargetCell[0], mTargetCell[1], resultSpan[0], resultSpan[1], resize, dragObject); 3392 } 3393 } 3394 3395 @Override 3396 public void getHitRectRelativeToDragLayer(Rect outRect) { 3397 // We want the workspace to have the whole area of the display (it will find the correct 3398 // cell layout to drop to in the existing drag/drop logic. 3399 mLauncher.getDragLayer().getDescendantRectRelativeToSelf(this, outRect); 3400 } 3401 3402 /** 3403 * Add the item specified by dragInfo to the given layout. 3404 * @return true if successful 3405 */ 3406 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 3407 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 3408 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 3409 return true; 3410 } 3411 mLauncher.showOutOfSpaceMessage(mLauncher.isHotseatLayout(layout)); 3412 return false; 3413 } 3414 3415 private void onDropExternal(int[] touchXY, Object dragInfo, 3416 CellLayout cellLayout, boolean insertAtFirst) { 3417 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 3418 } 3419 3420 /** 3421 * Drop an item that didn't originate on one of the workspace screens. 3422 * It may have come from Launcher (e.g. from all apps or customize), or it may have 3423 * come from another app altogether. 3424 * 3425 * NOTE: This can also be called when we are outside of a drag event, when we want 3426 * to add an item to one of the workspace screens. 3427 */ 3428 private void onDropExternal(final int[] touchXY, final Object dragInfo, 3429 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 3430 final Runnable exitSpringLoadedRunnable = new Runnable() { 3431 @Override 3432 public void run() { 3433 mLauncher.exitSpringLoadedDragModeDelayed(true, 3434 Launcher.EXIT_SPRINGLOADED_MODE_SHORT_TIMEOUT, null); 3435 } 3436 }; 3437 3438 ItemInfo info = (ItemInfo) dragInfo; 3439 int spanX = info.spanX; 3440 int spanY = info.spanY; 3441 if (mDragInfo != null) { 3442 spanX = mDragInfo.spanX; 3443 spanY = mDragInfo.spanY; 3444 } 3445 3446 final long container = mLauncher.isHotseatLayout(cellLayout) ? 3447 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 3448 LauncherSettings.Favorites.CONTAINER_DESKTOP; 3449 final long screenId = getIdForScreen(cellLayout); 3450 if (!mLauncher.isHotseatLayout(cellLayout) 3451 && screenId != getScreenIdForPageIndex(mCurrentPage) 3452 && mState != State.SPRING_LOADED) { 3453 snapToScreenId(screenId, null); 3454 } 3455 3456 if (info instanceof PendingAddItemInfo) { 3457 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 3458 3459 boolean findNearestVacantCell = true; 3460 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 3461 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3462 cellLayout, mTargetCell); 3463 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3464 mDragViewVisualCenter[1], mTargetCell); 3465 if (willCreateUserFolder((ItemInfo) d.dragInfo, cellLayout, mTargetCell, 3466 distance, true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 3467 cellLayout, mTargetCell, distance)) { 3468 findNearestVacantCell = false; 3469 } 3470 } 3471 3472 final ItemInfo item = (ItemInfo) d.dragInfo; 3473 boolean updateWidgetSize = false; 3474 if (findNearestVacantCell) { 3475 int minSpanX = item.spanX; 3476 int minSpanY = item.spanY; 3477 if (item.minSpanX > 0 && item.minSpanY > 0) { 3478 minSpanX = item.minSpanX; 3479 minSpanY = item.minSpanY; 3480 } 3481 int[] resultSpan = new int[2]; 3482 mTargetCell = cellLayout.performReorder((int) mDragViewVisualCenter[0], 3483 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, info.spanX, info.spanY, 3484 null, mTargetCell, resultSpan, CellLayout.MODE_ON_DROP_EXTERNAL); 3485 3486 if (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY) { 3487 updateWidgetSize = true; 3488 } 3489 item.spanX = resultSpan[0]; 3490 item.spanY = resultSpan[1]; 3491 } 3492 3493 Runnable onAnimationCompleteRunnable = new Runnable() { 3494 @Override 3495 public void run() { 3496 // Normally removeExtraEmptyScreen is called in Workspace#onDragEnd, but when 3497 // adding an item that may not be dropped right away (due to a config activity) 3498 // we defer the removal until the activity returns. 3499 deferRemoveExtraEmptyScreen(); 3500 3501 // When dragging and dropping from customization tray, we deal with creating 3502 // widgets/shortcuts/folders in a slightly different way 3503 mLauncher.addPendingItem(pendingInfo, container, screenId, mTargetCell, 3504 item.spanX, item.spanY); 3505 } 3506 }; 3507 boolean isWidget = pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET 3508 || pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_CUSTOM_APPWIDGET; 3509 3510 View finalView = isWidget ? ((PendingAddWidgetInfo) pendingInfo).boundWidget : null; 3511 3512 if (finalView instanceof AppWidgetHostView && updateWidgetSize) { 3513 AppWidgetHostView awhv = (AppWidgetHostView) finalView; 3514 AppWidgetResizeFrame.updateWidgetSizeRanges(awhv, mLauncher, item.spanX, 3515 item.spanY); 3516 } 3517 3518 int animationStyle = ANIMATE_INTO_POSITION_AND_DISAPPEAR; 3519 if (isWidget && ((PendingAddWidgetInfo) pendingInfo).info != null && 3520 ((PendingAddWidgetInfo) pendingInfo).info.configure != null) { 3521 animationStyle = ANIMATE_INTO_POSITION_AND_REMAIN; 3522 } 3523 animateWidgetDrop(info, cellLayout, d.dragView, onAnimationCompleteRunnable, 3524 animationStyle, finalView, true); 3525 } else { 3526 // This is for other drag/drop cases, like dragging from All Apps 3527 View view = null; 3528 3529 switch (info.itemType) { 3530 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 3531 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3532 if (info.container == NO_ID && info instanceof AppInfo) { 3533 // Came from all apps -- make a copy 3534 info = ((AppInfo) info).makeShortcut(); 3535 } 3536 view = mLauncher.createShortcut(cellLayout, (ShortcutInfo) info); 3537 break; 3538 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 3539 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 3540 (FolderInfo) info, mIconCache); 3541 break; 3542 default: 3543 throw new IllegalStateException("Unknown item type: " + info.itemType); 3544 } 3545 3546 // First we find the cell nearest to point at which the item is 3547 // dropped, without any consideration to whether there is an item there. 3548 if (touchXY != null) { 3549 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3550 cellLayout, mTargetCell); 3551 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3552 mDragViewVisualCenter[1], mTargetCell); 3553 d.postAnimationRunnable = exitSpringLoadedRunnable; 3554 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, distance, 3555 true, d.dragView, d.postAnimationRunnable)) { 3556 return; 3557 } 3558 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, distance, d, 3559 true)) { 3560 return; 3561 } 3562 } 3563 3564 if (touchXY != null) { 3565 // when dragging and dropping, just find the closest free spot 3566 mTargetCell = cellLayout.performReorder((int) mDragViewVisualCenter[0], 3567 (int) mDragViewVisualCenter[1], 1, 1, 1, 1, 3568 null, mTargetCell, null, CellLayout.MODE_ON_DROP_EXTERNAL); 3569 } else { 3570 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3571 } 3572 // Add the item to DB before adding to screen ensures that the container and other 3573 // values of the info is properly updated. 3574 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screenId, 3575 mTargetCell[0], mTargetCell[1]); 3576 3577 addInScreen(view, container, screenId, mTargetCell[0], mTargetCell[1], info.spanX, 3578 info.spanY, insertAtFirst); 3579 cellLayout.onDropChild(view); 3580 cellLayout.getShortcutsAndWidgets().measureChild(view); 3581 3582 if (d.dragView != null) { 3583 // We wrap the animation call in the temporary set and reset of the current 3584 // cellLayout to its final transform -- this means we animate the drag view to 3585 // the correct final location. 3586 setFinalTransitionTransform(cellLayout); 3587 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 3588 exitSpringLoadedRunnable, this); 3589 resetTransitionTransform(cellLayout); 3590 } 3591 } 3592 } 3593 3594 public Bitmap createWidgetBitmap(ItemInfo widgetInfo, View layout) { 3595 int[] unScaledSize = mLauncher.getWorkspace().estimateItemSize(widgetInfo, false); 3596 int visibility = layout.getVisibility(); 3597 layout.setVisibility(VISIBLE); 3598 3599 int width = MeasureSpec.makeMeasureSpec(unScaledSize[0], MeasureSpec.EXACTLY); 3600 int height = MeasureSpec.makeMeasureSpec(unScaledSize[1], MeasureSpec.EXACTLY); 3601 Bitmap b = Bitmap.createBitmap(unScaledSize[0], unScaledSize[1], 3602 Bitmap.Config.ARGB_8888); 3603 mCanvas.setBitmap(b); 3604 3605 layout.measure(width, height); 3606 layout.layout(0, 0, unScaledSize[0], unScaledSize[1]); 3607 layout.draw(mCanvas); 3608 mCanvas.setBitmap(null); 3609 layout.setVisibility(visibility); 3610 return b; 3611 } 3612 3613 private void getFinalPositionForDropAnimation(int[] loc, float[] scaleXY, 3614 DragView dragView, CellLayout layout, ItemInfo info, int[] targetCell, 3615 boolean external, boolean scale) { 3616 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 3617 // location and size on the home screen. 3618 int spanX = info.spanX; 3619 int spanY = info.spanY; 3620 3621 Rect r = estimateItemPosition(layout, info, targetCell[0], targetCell[1], spanX, spanY); 3622 loc[0] = r.left; 3623 loc[1] = r.top; 3624 3625 setFinalTransitionTransform(layout); 3626 float cellLayoutScale = 3627 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(layout, loc, true); 3628 resetTransitionTransform(layout); 3629 3630 float dragViewScaleX; 3631 float dragViewScaleY; 3632 if (scale) { 3633 dragViewScaleX = (1.0f * r.width()) / dragView.getMeasuredWidth(); 3634 dragViewScaleY = (1.0f * r.height()) / dragView.getMeasuredHeight(); 3635 } else { 3636 dragViewScaleX = 1f; 3637 dragViewScaleY = 1f; 3638 } 3639 3640 // The animation will scale the dragView about its center, so we need to center about 3641 // the final location. 3642 loc[0] -= (dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 3643 loc[1] -= (dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 3644 3645 scaleXY[0] = dragViewScaleX * cellLayoutScale; 3646 scaleXY[1] = dragViewScaleY * cellLayoutScale; 3647 } 3648 3649 public void animateWidgetDrop(ItemInfo info, CellLayout cellLayout, DragView dragView, 3650 final Runnable onCompleteRunnable, int animationType, final View finalView, 3651 boolean external) { 3652 Rect from = new Rect(); 3653 mLauncher.getDragLayer().getViewRectRelativeToSelf(dragView, from); 3654 3655 int[] finalPos = new int[2]; 3656 float scaleXY[] = new float[2]; 3657 boolean scalePreview = !(info instanceof PendingAddShortcutInfo); 3658 getFinalPositionForDropAnimation(finalPos, scaleXY, dragView, cellLayout, info, mTargetCell, 3659 external, scalePreview); 3660 3661 Resources res = mLauncher.getResources(); 3662 final int duration = res.getInteger(R.integer.config_dropAnimMaxDuration) - 200; 3663 3664 boolean isWidget = info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET || 3665 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_CUSTOM_APPWIDGET; 3666 if ((animationType == ANIMATE_INTO_POSITION_AND_RESIZE || external) && finalView != null) { 3667 Bitmap crossFadeBitmap = createWidgetBitmap(info, finalView); 3668 dragView.setCrossFadeBitmap(crossFadeBitmap); 3669 dragView.crossFade((int) (duration * 0.8f)); 3670 } else if (isWidget && external) { 3671 scaleXY[0] = scaleXY[1] = Math.min(scaleXY[0], scaleXY[1]); 3672 } 3673 3674 DragLayer dragLayer = mLauncher.getDragLayer(); 3675 if (animationType == CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION) { 3676 mLauncher.getDragLayer().animateViewIntoPosition(dragView, finalPos, 0f, 0.1f, 0.1f, 3677 DragLayer.ANIMATION_END_DISAPPEAR, onCompleteRunnable, duration); 3678 } else { 3679 int endStyle; 3680 if (animationType == ANIMATE_INTO_POSITION_AND_REMAIN) { 3681 endStyle = DragLayer.ANIMATION_END_REMAIN_VISIBLE; 3682 } else { 3683 endStyle = DragLayer.ANIMATION_END_DISAPPEAR;; 3684 } 3685 3686 Runnable onComplete = new Runnable() { 3687 @Override 3688 public void run() { 3689 if (finalView != null) { 3690 finalView.setVisibility(VISIBLE); 3691 } 3692 if (onCompleteRunnable != null) { 3693 onCompleteRunnable.run(); 3694 } 3695 } 3696 }; 3697 dragLayer.animateViewIntoPosition(dragView, from.left, from.top, finalPos[0], 3698 finalPos[1], 1, 1, 1, scaleXY[0], scaleXY[1], onComplete, endStyle, 3699 duration, this); 3700 } 3701 } 3702 3703 public void setFinalTransitionTransform(CellLayout layout) { 3704 if (isSwitchingState()) { 3705 mCurrentScale = getScaleX(); 3706 setScaleX(mStateTransitionAnimation.getFinalScale()); 3707 setScaleY(mStateTransitionAnimation.getFinalScale()); 3708 } 3709 } 3710 public void resetTransitionTransform(CellLayout layout) { 3711 if (isSwitchingState()) { 3712 setScaleX(mCurrentScale); 3713 setScaleY(mCurrentScale); 3714 } 3715 } 3716 3717 /** 3718 * Return the current {@link CellLayout}, correctly picking the destination 3719 * screen while a scroll is in progress. 3720 */ 3721 public CellLayout getCurrentDropLayout() { 3722 return (CellLayout) getChildAt(getNextPage()); 3723 } 3724 3725 /** 3726 * Return the current CellInfo describing our current drag; this method exists 3727 * so that Launcher can sync this object with the correct info when the activity is created/ 3728 * destroyed 3729 * 3730 */ 3731 public CellLayout.CellInfo getDragInfo() { 3732 return mDragInfo; 3733 } 3734 3735 public int getCurrentPageOffsetFromCustomContent() { 3736 return getNextPage() - numCustomPages(); 3737 } 3738 3739 /** 3740 * Calculate the nearest cell where the given object would be dropped. 3741 * 3742 * pixelX and pixelY should be in the coordinate system of layout 3743 */ 3744 @Thunk int[] findNearestArea(int pixelX, int pixelY, 3745 int spanX, int spanY, CellLayout layout, int[] recycle) { 3746 return layout.findNearestArea( 3747 pixelX, pixelY, spanX, spanY, recycle); 3748 } 3749 3750 void setup(DragController dragController) { 3751 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3752 mDragController = dragController; 3753 3754 // hardware layers on children are enabled on startup, but should be disabled until 3755 // needed 3756 updateChildrenLayersEnabled(false); 3757 } 3758 3759 /** 3760 * Called at the end of a drag which originated on the workspace. 3761 */ 3762 public void onDropCompleted(final View target, final DragObject d, 3763 final boolean isFlingToDelete, final boolean success) { 3764 if (mDeferDropAfterUninstall) { 3765 mDeferredAction = new Runnable() { 3766 public void run() { 3767 onDropCompleted(target, d, isFlingToDelete, success); 3768 mDeferredAction = null; 3769 } 3770 }; 3771 return; 3772 } 3773 3774 boolean beingCalledAfterUninstall = mDeferredAction != null; 3775 3776 if (success && !(beingCalledAfterUninstall && !mUninstallSuccessful)) { 3777 if (target != this && mDragInfo != null) { 3778 removeWorkspaceItem(mDragInfo.cell); 3779 } 3780 } else if (mDragInfo != null) { 3781 final CellLayout cellLayout = mLauncher.getCellLayout( 3782 mDragInfo.container, mDragInfo.screenId); 3783 if (cellLayout != null) { 3784 cellLayout.onDropChild(mDragInfo.cell); 3785 } else if (LauncherAppState.isDogfoodBuild()) { 3786 throw new RuntimeException("Invalid state: cellLayout == null in " 3787 + "Workspace#onDropCompleted. Please file a bug. "); 3788 }; 3789 } 3790 if ((d.cancelled || (beingCalledAfterUninstall && !mUninstallSuccessful)) 3791 && mDragInfo.cell != null) { 3792 mDragInfo.cell.setVisibility(VISIBLE); 3793 } 3794 mDragOutline = null; 3795 mDragInfo = null; 3796 } 3797 3798 /** 3799 * For opposite operation. See {@link #addInScreen}. 3800 */ 3801 public void removeWorkspaceItem(View v) { 3802 CellLayout parentCell = getParentCellLayoutForView(v); 3803 if (parentCell != null) { 3804 parentCell.removeView(v); 3805 } else if (LauncherAppState.isDogfoodBuild()) { 3806 // When an app is uninstalled using the drop target, we wait until resume to remove 3807 // the icon. We also remove all the corresponding items from the workspace at 3808 // {@link Launcher#bindComponentsRemoved}. That call can come before or after 3809 // {@link Launcher#mOnResumeCallbacks} depending on how busy the worker thread is. 3810 Log.e(TAG, "mDragInfo.cell has null parent"); 3811 } 3812 if (v instanceof DropTarget) { 3813 mDragController.removeDropTarget((DropTarget) v); 3814 } 3815 } 3816 3817 @Override 3818 public void deferCompleteDropAfterUninstallActivity() { 3819 mDeferDropAfterUninstall = true; 3820 } 3821 3822 /// maybe move this into a smaller part 3823 @Override 3824 public void onUninstallActivityReturned(boolean success) { 3825 mDeferDropAfterUninstall = false; 3826 mUninstallSuccessful = success; 3827 if (mDeferredAction != null) { 3828 mDeferredAction.run(); 3829 } 3830 } 3831 3832 void updateItemLocationsInDatabase(CellLayout cl) { 3833 int count = cl.getShortcutsAndWidgets().getChildCount(); 3834 3835 long screenId = getIdForScreen(cl); 3836 int container = Favorites.CONTAINER_DESKTOP; 3837 3838 if (mLauncher.isHotseatLayout(cl)) { 3839 screenId = -1; 3840 container = Favorites.CONTAINER_HOTSEAT; 3841 } 3842 3843 for (int i = 0; i < count; i++) { 3844 View v = cl.getShortcutsAndWidgets().getChildAt(i); 3845 ItemInfo info = (ItemInfo) v.getTag(); 3846 // Null check required as the AllApps button doesn't have an item info 3847 if (info != null && info.requiresDbUpdate) { 3848 info.requiresDbUpdate = false; 3849 LauncherModel.modifyItemInDatabase(mLauncher, info, container, screenId, info.cellX, 3850 info.cellY, info.spanX, info.spanY); 3851 } 3852 } 3853 } 3854 3855 void saveWorkspaceToDb() { 3856 saveWorkspaceScreenToDb((CellLayout) mLauncher.getHotseat().getLayout()); 3857 int count = getChildCount(); 3858 for (int i = 0; i < count; i++) { 3859 CellLayout cl = (CellLayout) getChildAt(i); 3860 saveWorkspaceScreenToDb(cl); 3861 } 3862 } 3863 3864 void saveWorkspaceScreenToDb(CellLayout cl) { 3865 int count = cl.getShortcutsAndWidgets().getChildCount(); 3866 3867 long screenId = getIdForScreen(cl); 3868 int container = Favorites.CONTAINER_DESKTOP; 3869 3870 Hotseat hotseat = mLauncher.getHotseat(); 3871 if (mLauncher.isHotseatLayout(cl)) { 3872 screenId = -1; 3873 container = Favorites.CONTAINER_HOTSEAT; 3874 } 3875 3876 for (int i = 0; i < count; i++) { 3877 View v = cl.getShortcutsAndWidgets().getChildAt(i); 3878 ItemInfo info = (ItemInfo) v.getTag(); 3879 // Null check required as the AllApps button doesn't have an item info 3880 if (info != null) { 3881 int cellX = info.cellX; 3882 int cellY = info.cellY; 3883 if (container == Favorites.CONTAINER_HOTSEAT) { 3884 cellX = hotseat.getCellXFromOrder((int) info.screenId); 3885 cellY = hotseat.getCellYFromOrder((int) info.screenId); 3886 } 3887 LauncherModel.addItemToDatabase(mLauncher, info, container, screenId, cellX, cellY); 3888 } 3889 if (v instanceof FolderIcon) { 3890 FolderIcon fi = (FolderIcon) v; 3891 fi.getFolder().addItemLocationsInDatabase(); 3892 } 3893 } 3894 } 3895 3896 @Override 3897 public float getIntrinsicIconScaleFactor() { 3898 return 1f; 3899 } 3900 3901 @Override 3902 public boolean supportsFlingToDelete() { 3903 return true; 3904 } 3905 3906 @Override 3907 public boolean supportsAppInfoDropTarget() { 3908 return false; 3909 } 3910 3911 @Override 3912 public boolean supportsDeleteDropTarget() { 3913 return true; 3914 } 3915 3916 @Override 3917 public void onFlingToDelete(DragObject d, PointF vec) { 3918 // Do nothing 3919 } 3920 3921 @Override 3922 public void onFlingToDeleteCompleted() { 3923 // Do nothing 3924 } 3925 3926 public boolean isDropEnabled() { 3927 return true; 3928 } 3929 3930 @Override 3931 protected void dispatchRestoreInstanceState(SparseArray<Parcelable> container) { 3932 // We don't dispatch restoreInstanceState to our children using this code path. 3933 // Some pages will be restored immediately as their items are bound immediately, and 3934 // others we will need to wait until after their items are bound. 3935 mSavedStates = container; 3936 } 3937 3938 public void restoreInstanceStateForChild(int child) { 3939 if (mSavedStates != null) { 3940 mRestoredPages.add(child); 3941 CellLayout cl = (CellLayout) getChildAt(child); 3942 if (cl != null) { 3943 cl.restoreInstanceState(mSavedStates); 3944 } 3945 } 3946 } 3947 3948 public void restoreInstanceStateForRemainingPages() { 3949 int count = getChildCount(); 3950 for (int i = 0; i < count; i++) { 3951 if (!mRestoredPages.contains(i)) { 3952 restoreInstanceStateForChild(i); 3953 } 3954 } 3955 mRestoredPages.clear(); 3956 mSavedStates = null; 3957 } 3958 3959 @Override 3960 public void scrollLeft() { 3961 if (!workspaceInModalState() && !mIsSwitchingState) { 3962 super.scrollLeft(); 3963 } 3964 Folder openFolder = getOpenFolder(); 3965 if (openFolder != null) { 3966 openFolder.completeDragExit(); 3967 } 3968 } 3969 3970 @Override 3971 public void scrollRight() { 3972 if (!workspaceInModalState() && !mIsSwitchingState) { 3973 super.scrollRight(); 3974 } 3975 Folder openFolder = getOpenFolder(); 3976 if (openFolder != null) { 3977 openFolder.completeDragExit(); 3978 } 3979 } 3980 3981 @Override 3982 public boolean onEnterScrollArea(int x, int y, int direction) { 3983 // Ignore the scroll area if we are dragging over the hot seat 3984 boolean isPortrait = !mLauncher.getDeviceProfile().isLandscape; 3985 if (mLauncher.getHotseat() != null && isPortrait) { 3986 Rect r = new Rect(); 3987 mLauncher.getHotseat().getHitRect(r); 3988 if (r.contains(x, y)) { 3989 return false; 3990 } 3991 } 3992 3993 boolean result = false; 3994 if (!workspaceInModalState() && !mIsSwitchingState && getOpenFolder() == null) { 3995 mInScrollArea = true; 3996 3997 final int page = getNextPage() + 3998 (direction == DragController.SCROLL_LEFT ? -1 : 1); 3999 // We always want to exit the current layout to ensure parity of enter / exit 4000 setCurrentDropLayout(null); 4001 4002 if (0 <= page && page < getChildCount()) { 4003 // Ensure that we are not dragging over to the custom content screen 4004 if (getScreenIdForPageIndex(page) == CUSTOM_CONTENT_SCREEN_ID) { 4005 return false; 4006 } 4007 4008 CellLayout layout = (CellLayout) getChildAt(page); 4009 setCurrentDragOverlappingLayout(layout); 4010 4011 // Workspace is responsible for drawing the edge glow on adjacent pages, 4012 // so we need to redraw the workspace when this may have changed. 4013 invalidate(); 4014 result = true; 4015 } 4016 } 4017 return result; 4018 } 4019 4020 @Override 4021 public boolean onExitScrollArea() { 4022 boolean result = false; 4023 if (mInScrollArea) { 4024 invalidate(); 4025 CellLayout layout = getCurrentDropLayout(); 4026 setCurrentDropLayout(layout); 4027 setCurrentDragOverlappingLayout(layout); 4028 4029 result = true; 4030 mInScrollArea = false; 4031 } 4032 return result; 4033 } 4034 4035 private void onResetScrollArea() { 4036 setCurrentDragOverlappingLayout(null); 4037 mInScrollArea = false; 4038 } 4039 4040 /** 4041 * Returns a specific CellLayout 4042 */ 4043 CellLayout getParentCellLayoutForView(View v) { 4044 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 4045 for (CellLayout layout : layouts) { 4046 if (layout.getShortcutsAndWidgets().indexOfChild(v) > -1) { 4047 return layout; 4048 } 4049 } 4050 return null; 4051 } 4052 4053 /** 4054 * Returns a list of all the CellLayouts in the workspace. 4055 */ 4056 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 4057 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 4058 int screenCount = getChildCount(); 4059 for (int screen = 0; screen < screenCount; screen++) { 4060 layouts.add(((CellLayout) getChildAt(screen))); 4061 } 4062 if (mLauncher.getHotseat() != null) { 4063 layouts.add(mLauncher.getHotseat().getLayout()); 4064 } 4065 return layouts; 4066 } 4067 4068 /** 4069 * We should only use this to search for specific children. Do not use this method to modify 4070 * ShortcutsAndWidgetsContainer directly. Includes ShortcutAndWidgetContainers from 4071 * the hotseat and workspace pages 4072 */ 4073 ArrayList<ShortcutAndWidgetContainer> getAllShortcutAndWidgetContainers() { 4074 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 4075 new ArrayList<ShortcutAndWidgetContainer>(); 4076 int screenCount = getChildCount(); 4077 for (int screen = 0; screen < screenCount; screen++) { 4078 childrenLayouts.add(((CellLayout) getChildAt(screen)).getShortcutsAndWidgets()); 4079 } 4080 if (mLauncher.getHotseat() != null) { 4081 childrenLayouts.add(mLauncher.getHotseat().getLayout().getShortcutsAndWidgets()); 4082 } 4083 return childrenLayouts; 4084 } 4085 4086 public Folder getFolderForTag(final Object tag) { 4087 return (Folder) getFirstMatch(new ItemOperator() { 4088 4089 @Override 4090 public boolean evaluate(ItemInfo info, View v, View parent) { 4091 return (v instanceof Folder) && (((Folder) v).getInfo() == tag) 4092 && ((Folder) v).getInfo().opened; 4093 } 4094 }); 4095 } 4096 4097 public View getHomescreenIconByItemId(final long id) { 4098 return getFirstMatch(new ItemOperator() { 4099 4100 @Override 4101 public boolean evaluate(ItemInfo info, View v, View parent) { 4102 return info != null && info.id == id; 4103 } 4104 }); 4105 } 4106 4107 public View getViewForTag(final Object tag) { 4108 return getFirstMatch(new ItemOperator() { 4109 4110 @Override 4111 public boolean evaluate(ItemInfo info, View v, View parent) { 4112 return info == tag; 4113 } 4114 }); 4115 } 4116 4117 public LauncherAppWidgetHostView getWidgetForAppWidgetId(final int appWidgetId) { 4118 return (LauncherAppWidgetHostView) getFirstMatch(new ItemOperator() { 4119 4120 @Override 4121 public boolean evaluate(ItemInfo info, View v, View parent) { 4122 return (info instanceof LauncherAppWidgetInfo) && 4123 ((LauncherAppWidgetInfo) info).appWidgetId == appWidgetId; 4124 } 4125 }); 4126 } 4127 4128 private View getFirstMatch(final ItemOperator operator) { 4129 final View[] value = new View[1]; 4130 mapOverItems(MAP_NO_RECURSE, new ItemOperator() { 4131 @Override 4132 public boolean evaluate(ItemInfo info, View v, View parent) { 4133 if (operator.evaluate(info, v, parent)) { 4134 value[0] = v; 4135 return true; 4136 } 4137 return false; 4138 } 4139 }); 4140 return value[0]; 4141 } 4142 4143 void clearDropTargets() { 4144 mapOverItems(MAP_NO_RECURSE, new ItemOperator() { 4145 @Override 4146 public boolean evaluate(ItemInfo info, View v, View parent) { 4147 if (v instanceof DropTarget) { 4148 mDragController.removeDropTarget((DropTarget) v); 4149 } 4150 // not done, process all the shortcuts 4151 return false; 4152 } 4153 }); 4154 } 4155 4156 public void disableShortcutsByPackageName(final ArrayList<String> packages, 4157 final UserHandleCompat user, final int reason) { 4158 final HashSet<String> packageNames = new HashSet<String>(); 4159 packageNames.addAll(packages); 4160 4161 mapOverItems(MAP_RECURSE, new ItemOperator() { 4162 @Override 4163 public boolean evaluate(ItemInfo info, View v, View parent) { 4164 if (info instanceof ShortcutInfo && v instanceof BubbleTextView) { 4165 ShortcutInfo shortcutInfo = (ShortcutInfo) info; 4166 ComponentName cn = shortcutInfo.getTargetComponent(); 4167 if (user.equals(shortcutInfo.user) && cn != null 4168 && packageNames.contains(cn.getPackageName())) { 4169 shortcutInfo.isDisabled |= reason; 4170 BubbleTextView shortcut = (BubbleTextView) v; 4171 shortcut.applyFromShortcutInfo(shortcutInfo, mIconCache); 4172 4173 if (parent != null) { 4174 parent.invalidate(); 4175 } 4176 } 4177 } 4178 // process all the shortcuts 4179 return false; 4180 } 4181 }); 4182 } 4183 4184 // Removes ALL items that match a given package name, this is usually called when a package 4185 // has been removed and we want to remove all components (widgets, shortcuts, apps) that 4186 // belong to that package. 4187 void removeItemsByPackageName(final ArrayList<String> packages, final UserHandleCompat user) { 4188 final HashSet<String> packageNames = new HashSet<String>(); 4189 packageNames.addAll(packages); 4190 4191 // Filter out all the ItemInfos that this is going to affect 4192 final HashSet<ItemInfo> infos = new HashSet<ItemInfo>(); 4193 final HashSet<ComponentName> cns = new HashSet<ComponentName>(); 4194 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 4195 for (CellLayout layoutParent : cellLayouts) { 4196 ViewGroup layout = layoutParent.getShortcutsAndWidgets(); 4197 int childCount = layout.getChildCount(); 4198 for (int i = 0; i < childCount; ++i) { 4199 View view = layout.getChildAt(i); 4200 infos.add((ItemInfo) view.getTag()); 4201 } 4202 } 4203 LauncherModel.ItemInfoFilter filter = new LauncherModel.ItemInfoFilter() { 4204 @Override 4205 public boolean filterItem(ItemInfo parent, ItemInfo info, 4206 ComponentName cn) { 4207 if (packageNames.contains(cn.getPackageName()) 4208 && info.user.equals(user)) { 4209 cns.add(cn); 4210 return true; 4211 } 4212 return false; 4213 } 4214 }; 4215 LauncherModel.filterItemInfos(infos, filter); 4216 4217 // Remove the affected components 4218 removeItemsByComponentName(cns, user); 4219 } 4220 4221 /** 4222 * Removes items that match the item info specified. When applications are removed 4223 * as a part of an update, this is called to ensure that other widgets and application 4224 * shortcuts are not removed. 4225 */ 4226 void removeItemsByComponentName(final HashSet<ComponentName> componentNames, 4227 final UserHandleCompat user) { 4228 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 4229 for (final CellLayout layoutParent: cellLayouts) { 4230 final ViewGroup layout = layoutParent.getShortcutsAndWidgets(); 4231 4232 final HashMap<ItemInfo, View> children = new HashMap<ItemInfo, View>(); 4233 for (int j = 0; j < layout.getChildCount(); j++) { 4234 final View view = layout.getChildAt(j); 4235 children.put((ItemInfo) view.getTag(), view); 4236 } 4237 4238 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 4239 final HashMap<FolderInfo, ArrayList<ShortcutInfo>> folderAppsToRemove = 4240 new HashMap<FolderInfo, ArrayList<ShortcutInfo>>(); 4241 LauncherModel.ItemInfoFilter filter = new LauncherModel.ItemInfoFilter() { 4242 @Override 4243 public boolean filterItem(ItemInfo parent, ItemInfo info, 4244 ComponentName cn) { 4245 if (parent instanceof FolderInfo) { 4246 if (componentNames.contains(cn) && info.user.equals(user)) { 4247 FolderInfo folder = (FolderInfo) parent; 4248 ArrayList<ShortcutInfo> appsToRemove; 4249 if (folderAppsToRemove.containsKey(folder)) { 4250 appsToRemove = folderAppsToRemove.get(folder); 4251 } else { 4252 appsToRemove = new ArrayList<ShortcutInfo>(); 4253 folderAppsToRemove.put(folder, appsToRemove); 4254 } 4255 appsToRemove.add((ShortcutInfo) info); 4256 return true; 4257 } 4258 } else { 4259 if (componentNames.contains(cn) && info.user.equals(user)) { 4260 childrenToRemove.add(children.get(info)); 4261 return true; 4262 } 4263 } 4264 return false; 4265 } 4266 }; 4267 LauncherModel.filterItemInfos(children.keySet(), filter); 4268 4269 // Remove all the apps from their folders 4270 for (FolderInfo folder : folderAppsToRemove.keySet()) { 4271 ArrayList<ShortcutInfo> appsToRemove = folderAppsToRemove.get(folder); 4272 for (ShortcutInfo info : appsToRemove) { 4273 folder.remove(info); 4274 } 4275 } 4276 4277 // Remove all the other children 4278 for (View child : childrenToRemove) { 4279 // Note: We can not remove the view directly from CellLayoutChildren as this 4280 // does not re-mark the spaces as unoccupied. 4281 layoutParent.removeViewInLayout(child); 4282 if (child instanceof DropTarget) { 4283 mDragController.removeDropTarget((DropTarget) child); 4284 } 4285 } 4286 4287 if (childrenToRemove.size() > 0) { 4288 layout.requestLayout(); 4289 layout.invalidate(); 4290 } 4291 } 4292 4293 // Strip all the empty screens 4294 stripEmptyScreens(); 4295 } 4296 4297 interface ItemOperator { 4298 /** 4299 * Process the next itemInfo, possibly with side-effect on {@link ItemOperator#value}. 4300 * 4301 * @param info info for the shortcut 4302 * @param view view for the shortcut 4303 * @param parent containing folder, or null 4304 * @return true if done, false to continue the map 4305 */ 4306 public boolean evaluate(ItemInfo info, View view, View parent); 4307 } 4308 4309 /** 4310 * Map the operator over the shortcuts and widgets, return the first-non-null value. 4311 * 4312 * @param recurse true: iterate over folder children. false: op get the folders themselves. 4313 * @param op the operator to map over the shortcuts 4314 */ 4315 void mapOverItems(boolean recurse, ItemOperator op) { 4316 ArrayList<ShortcutAndWidgetContainer> containers = getAllShortcutAndWidgetContainers(); 4317 final int containerCount = containers.size(); 4318 for (int containerIdx = 0; containerIdx < containerCount; containerIdx++) { 4319 ShortcutAndWidgetContainer container = containers.get(containerIdx); 4320 // map over all the shortcuts on the workspace 4321 final int itemCount = container.getChildCount(); 4322 for (int itemIdx = 0; itemIdx < itemCount; itemIdx++) { 4323 View item = container.getChildAt(itemIdx); 4324 ItemInfo info = (ItemInfo) item.getTag(); 4325 if (recurse && info instanceof FolderInfo && item instanceof FolderIcon) { 4326 FolderIcon folder = (FolderIcon) item; 4327 ArrayList<View> folderChildren = folder.getFolder().getItemsInReadingOrder(); 4328 // map over all the children in the folder 4329 final int childCount = folderChildren.size(); 4330 for (int childIdx = 0; childIdx < childCount; childIdx++) { 4331 View child = folderChildren.get(childIdx); 4332 info = (ItemInfo) child.getTag(); 4333 if (op.evaluate(info, child, folder)) { 4334 return; 4335 } 4336 } 4337 } else { 4338 if (op.evaluate(info, item, null)) { 4339 return; 4340 } 4341 } 4342 } 4343 } 4344 } 4345 4346 void updateShortcuts(ArrayList<ShortcutInfo> shortcuts) { 4347 final HashSet<ShortcutInfo> updates = new HashSet<ShortcutInfo>(shortcuts); 4348 mapOverItems(MAP_RECURSE, new ItemOperator() { 4349 @Override 4350 public boolean evaluate(ItemInfo info, View v, View parent) { 4351 if (info instanceof ShortcutInfo && v instanceof BubbleTextView && 4352 updates.contains(info)) { 4353 ShortcutInfo si = (ShortcutInfo) info; 4354 BubbleTextView shortcut = (BubbleTextView) v; 4355 Drawable oldIcon = getTextViewIcon(shortcut); 4356 boolean oldPromiseState = (oldIcon instanceof PreloadIconDrawable) 4357 && ((PreloadIconDrawable) oldIcon).hasNotCompleted(); 4358 shortcut.applyFromShortcutInfo(si, mIconCache, 4359 si.isPromise() != oldPromiseState); 4360 4361 if (parent != null) { 4362 parent.invalidate(); 4363 } 4364 } 4365 // process all the shortcuts 4366 return false; 4367 } 4368 }); 4369 } 4370 4371 public void removeAbandonedPromise(String packageName, UserHandleCompat user) { 4372 ArrayList<String> packages = new ArrayList<String>(1); 4373 packages.add(packageName); 4374 LauncherModel.deletePackageFromDatabase(mLauncher, packageName, user); 4375 removeItemsByPackageName(packages, user); 4376 } 4377 4378 public void updateRestoreItems(final HashSet<ItemInfo> updates) { 4379 mapOverItems(MAP_RECURSE, new ItemOperator() { 4380 @Override 4381 public boolean evaluate(ItemInfo info, View v, View parent) { 4382 if (info instanceof ShortcutInfo && v instanceof BubbleTextView 4383 && updates.contains(info)) { 4384 ((BubbleTextView) v).applyState(false); 4385 } else if (v instanceof PendingAppWidgetHostView 4386 && info instanceof LauncherAppWidgetInfo 4387 && updates.contains(info)) { 4388 ((PendingAppWidgetHostView) v).applyState(); 4389 } 4390 // process all the shortcuts 4391 return false; 4392 } 4393 }); 4394 } 4395 4396 void widgetsRestored(ArrayList<LauncherAppWidgetInfo> changedInfo) { 4397 if (!changedInfo.isEmpty()) { 4398 DeferredWidgetRefresh widgetRefresh = new DeferredWidgetRefresh(changedInfo, 4399 mLauncher.getAppWidgetHost()); 4400 if (LauncherModel.getProviderInfo(getContext(), 4401 changedInfo.get(0).providerName, 4402 changedInfo.get(0).user) != null) { 4403 // Re-inflate the widgets which have changed status 4404 widgetRefresh.run(); 4405 } else { 4406 // widgetRefresh will automatically run when the packages are updated. 4407 // For now just update the progress bars 4408 for (LauncherAppWidgetInfo info : changedInfo) { 4409 if (info.hostView instanceof PendingAppWidgetHostView) { 4410 info.installProgress = 100; 4411 ((PendingAppWidgetHostView) info.hostView).applyState(); 4412 } 4413 } 4414 } 4415 } 4416 } 4417 4418 private void moveToScreen(int page, boolean animate) { 4419 if (!workspaceInModalState()) { 4420 if (animate) { 4421 snapToPage(page); 4422 } else { 4423 setCurrentPage(page); 4424 } 4425 } 4426 View child = getChildAt(page); 4427 if (child != null) { 4428 child.requestFocus(); 4429 } 4430 } 4431 4432 void moveToDefaultScreen(boolean animate) { 4433 moveToScreen(mDefaultPage, animate); 4434 } 4435 4436 void moveToCustomContentScreen(boolean animate) { 4437 if (hasCustomContent()) { 4438 int ccIndex = getPageIndexForScreenId(CUSTOM_CONTENT_SCREEN_ID); 4439 if (animate) { 4440 snapToPage(ccIndex); 4441 } else { 4442 setCurrentPage(ccIndex); 4443 } 4444 View child = getChildAt(ccIndex); 4445 if (child != null) { 4446 child.requestFocus(); 4447 } 4448 } 4449 exitWidgetResizeMode(); 4450 } 4451 4452 @Override 4453 protected PageIndicator.PageMarkerResources getPageIndicatorMarker(int pageIndex) { 4454 long screenId = getScreenIdForPageIndex(pageIndex); 4455 if (screenId == EXTRA_EMPTY_SCREEN_ID) { 4456 int count = mScreenOrder.size() - numCustomPages(); 4457 if (count > 1) { 4458 return new PageIndicator.PageMarkerResources(R.drawable.ic_pageindicator_current, 4459 R.drawable.ic_pageindicator_add); 4460 } 4461 } 4462 4463 return super.getPageIndicatorMarker(pageIndex); 4464 } 4465 4466 protected String getPageIndicatorDescription() { 4467 String settings = getResources().getString(R.string.settings_button_text); 4468 return getCurrentPageDescription() + ", " + settings; 4469 } 4470 4471 protected String getCurrentPageDescription() { 4472 if (hasCustomContent() && getNextPage() == 0) { 4473 return mCustomContentDescription; 4474 } 4475 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 4476 return getPageDescription(page); 4477 } 4478 4479 private String getPageDescription(int page) { 4480 int delta = numCustomPages(); 4481 int nScreens = getChildCount() - delta; 4482 int extraScreenId = mScreenOrder.indexOf(EXTRA_EMPTY_SCREEN_ID); 4483 if (extraScreenId >= 0 && nScreens > 1) { 4484 if (page == extraScreenId) { 4485 return getContext().getString(R.string.workspace_new_page); 4486 } 4487 nScreens--; 4488 } 4489 return String.format(getContext().getString(R.string.workspace_scroll_format), 4490 page + 1 - delta, nScreens); 4491 4492 } 4493 4494 public void getLocationInDragLayer(int[] loc) { 4495 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 4496 } 4497 4498 @Override 4499 public void fillInLaunchSourceData(Bundle sourceData) { 4500 sourceData.putString(Stats.SOURCE_EXTRA_CONTAINER, Stats.CONTAINER_HOMESCREEN); 4501 sourceData.putInt(Stats.SOURCE_EXTRA_CONTAINER_PAGE, getCurrentPage()); 4502 } 4503 4504 /** 4505 * Used as a workaround to ensure that the AppWidgetService receives the 4506 * PACKAGE_ADDED broadcast before updating widgets. 4507 */ 4508 private class DeferredWidgetRefresh implements Runnable { 4509 private final ArrayList<LauncherAppWidgetInfo> mInfos; 4510 private final LauncherAppWidgetHost mHost; 4511 private final Handler mHandler; 4512 4513 private boolean mRefreshPending; 4514 4515 public DeferredWidgetRefresh(ArrayList<LauncherAppWidgetInfo> infos, 4516 LauncherAppWidgetHost host) { 4517 mInfos = infos; 4518 mHost = host; 4519 mHandler = new Handler(); 4520 mRefreshPending = true; 4521 4522 mHost.addProviderChangeListener(this); 4523 // Force refresh after 10 seconds, if we don't get the provider changed event. 4524 // This could happen when the provider is no longer available in the app. 4525 mHandler.postDelayed(this, 10000); 4526 } 4527 4528 @Override 4529 public void run() { 4530 mHost.removeProviderChangeListener(this); 4531 mHandler.removeCallbacks(this); 4532 4533 if (!mRefreshPending) { 4534 return; 4535 } 4536 4537 mRefreshPending = false; 4538 4539 for (LauncherAppWidgetInfo info : mInfos) { 4540 if (info.hostView instanceof PendingAppWidgetHostView) { 4541 // Remove and rebind the current widget, but don't delete it from the database 4542 PendingAppWidgetHostView view = (PendingAppWidgetHostView) info.hostView; 4543 mLauncher.removeItem(view, info, false /* deleteFromDb */); 4544 mLauncher.bindAppWidget(info); 4545 } 4546 } 4547 } 4548 } 4549} 4550