Workspace.java revision 8e2133b2c2bde86f913d817942bafdcf6818470b
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.TargetApi; 25import android.app.WallpaperManager; 26import android.appwidget.AppWidgetHostView; 27import android.appwidget.AppWidgetProviderInfo; 28import android.content.ComponentName; 29import android.content.Context; 30import android.content.SharedPreferences; 31import android.content.res.Resources; 32import android.content.res.TypedArray; 33import android.graphics.Bitmap; 34import android.graphics.Canvas; 35import android.graphics.Matrix; 36import android.graphics.Paint; 37import android.graphics.Point; 38import android.graphics.PointF; 39import android.graphics.Rect; 40import android.graphics.Region.Op; 41import android.graphics.drawable.Drawable; 42import android.os.AsyncTask; 43import android.os.Build; 44import android.os.Handler; 45import android.os.IBinder; 46import android.os.Parcelable; 47import android.util.AttributeSet; 48import android.util.Log; 49import android.util.SparseArray; 50import android.view.Choreographer; 51import android.view.Display; 52import android.view.MotionEvent; 53import android.view.View; 54import android.view.ViewGroup; 55import android.view.accessibility.AccessibilityManager; 56import android.view.animation.DecelerateInterpolator; 57import android.view.animation.Interpolator; 58import android.widget.TextView; 59 60import com.android.launcher3.FolderIcon.FolderRingAnimator; 61import com.android.launcher3.Launcher.CustomContentCallbacks; 62import com.android.launcher3.Launcher.LauncherOverlay; 63import com.android.launcher3.LauncherAccessibilityDelegate.AccessibilityDragSource; 64import com.android.launcher3.LauncherSettings.Favorites; 65import com.android.launcher3.UninstallDropTarget.UninstallSource; 66import com.android.launcher3.compat.UserHandleCompat; 67import com.android.launcher3.util.LongArrayMap; 68import com.android.launcher3.util.Thunk; 69import com.android.launcher3.util.WallpaperUtils; 70import com.android.launcher3.widget.PendingAddShortcutInfo; 71import com.android.launcher3.widget.PendingAddWidgetInfo; 72 73import java.util.ArrayList; 74import java.util.HashMap; 75import java.util.HashSet; 76import java.util.concurrent.atomic.AtomicInteger; 77 78/** 79 * The workspace is a wide area with a wallpaper and a finite number of pages. 80 * Each page contains a number of icons, folders or widgets the user can 81 * interact with. A workspace is meant to be used with a fixed width only. 82 */ 83public class Workspace extends SmoothPagedView 84 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 85 DragController.DragListener, LauncherTransitionable, ViewGroup.OnHierarchyChangeListener, 86 Insettable, UninstallSource, AccessibilityDragSource { 87 private static final String TAG = "Launcher.Workspace"; 88 89 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 90 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 91 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 92 93 protected static final int SNAP_OFF_EMPTY_SCREEN_DURATION = 400; 94 protected static final int FADE_EMPTY_SCREEN_DURATION = 150; 95 96 private static final int ADJACENT_SCREEN_DROP_DURATION = 300; 97 98 static final boolean MAP_NO_RECURSE = false; 99 static final boolean MAP_RECURSE = true; 100 101 // These animators are used to fade the children's outlines 102 private ObjectAnimator mChildrenOutlineFadeInAnimation; 103 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 104 private float mChildrenOutlineAlpha = 0; 105 106 private static final long CUSTOM_CONTENT_GESTURE_DELAY = 200; 107 private long mTouchDownTime = -1; 108 private long mCustomContentShowTime = -1; 109 110 private LayoutTransition mLayoutTransition; 111 @Thunk final WallpaperManager mWallpaperManager; 112 @Thunk IBinder mWindowToken; 113 114 private int mOriginalDefaultPage; 115 private int mDefaultPage; 116 117 private ShortcutAndWidgetContainer mDragSourceInternal; 118 119 // The screen id used for the empty screen always present to the right. 120 final static long EXTRA_EMPTY_SCREEN_ID = -201; 121 private final static long CUSTOM_CONTENT_SCREEN_ID = -301; 122 123 @Thunk LongArrayMap<CellLayout> mWorkspaceScreens = new LongArrayMap<>(); 124 @Thunk ArrayList<Long> mScreenOrder = new ArrayList<Long>(); 125 126 @Thunk Runnable mRemoveEmptyScreenRunnable; 127 @Thunk boolean mDeferRemoveExtraEmptyScreen = false; 128 @Thunk boolean mAddNewPageOnDrag = true; 129 130 /** 131 * CellInfo for the cell that is currently being dragged 132 */ 133 private CellLayout.CellInfo mDragInfo; 134 135 /** 136 * Target drop area calculated during last acceptDrop call. 137 */ 138 @Thunk int[] mTargetCell = new int[2]; 139 private int mDragOverX = -1; 140 private int mDragOverY = -1; 141 142 static Rect mLandscapeCellLayoutMetrics = null; 143 static Rect mPortraitCellLayoutMetrics = null; 144 145 CustomContentCallbacks mCustomContentCallbacks; 146 boolean mCustomContentShowing; 147 private float mLastCustomContentScrollProgress = -1f; 148 private String mCustomContentDescription = ""; 149 150 /** 151 * The CellLayout that is currently being dragged over 152 */ 153 @Thunk CellLayout mDragTargetLayout = null; 154 /** 155 * The CellLayout that we will show as glowing 156 */ 157 private CellLayout mDragOverlappingLayout = null; 158 159 /** 160 * The CellLayout which will be dropped to 161 */ 162 private CellLayout mDropToLayout = null; 163 164 @Thunk Launcher mLauncher; 165 @Thunk IconCache mIconCache; 166 @Thunk DragController mDragController; 167 168 // These are temporary variables to prevent having to allocate a new object just to 169 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 170 private int[] mTempCell = new int[2]; 171 private int[] mTempPt = new int[2]; 172 private int[] mTempEstimate = new int[2]; 173 @Thunk float[] mDragViewVisualCenter = new float[2]; 174 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 175 private Matrix mTempInverseMatrix = new Matrix(); 176 177 private SpringLoadedDragController mSpringLoadedDragController; 178 private float mSpringLoadedShrinkFactor; 179 private float mOverviewModeShrinkFactor; 180 181 // State variable that indicates whether the pages are small (ie when you're 182 // in all apps or customize mode) 183 184 enum State { NORMAL, NORMAL_HIDDEN, SPRING_LOADED, OVERVIEW, OVERVIEW_HIDDEN}; 185 private State mState = State.NORMAL; 186 private boolean mIsSwitchingState = false; 187 188 boolean mAnimatingViewIntoPlace = false; 189 boolean mIsDragOccuring = false; 190 boolean mChildrenLayersEnabled = true; 191 192 private boolean mStripScreensOnPageStopMoving = false; 193 194 /** Is the user is dragging an item near the edge of a page? */ 195 private boolean mInScrollArea = false; 196 197 private HolographicOutlineHelper mOutlineHelper; 198 @Thunk Bitmap mDragOutline = null; 199 private static final Rect sTempRect = new Rect(); 200 private final int[] mTempXY = new int[2]; 201 private int[] mTempVisiblePagesRange = new int[2]; 202 private boolean mOverscrollEffectSet; 203 public static final int DRAG_BITMAP_PADDING = 2; 204 private boolean mWorkspaceFadeInAdjacentScreens; 205 206 WallpaperOffsetInterpolator mWallpaperOffset; 207 @Thunk boolean mWallpaperIsLiveWallpaper; 208 @Thunk int mNumPagesForWallpaperParallax; 209 @Thunk float mLastSetWallpaperOffsetSteps = 0; 210 211 @Thunk Runnable mDelayedResizeRunnable; 212 private Runnable mDelayedSnapToPageRunnable; 213 private Point mDisplaySize = new Point(); 214 215 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 216 private static final int FOLDER_CREATION_TIMEOUT = 0; 217 public static final int REORDER_TIMEOUT = 350; 218 private final Alarm mFolderCreationAlarm = new Alarm(); 219 private final Alarm mReorderAlarm = new Alarm(); 220 @Thunk FolderRingAnimator mDragFolderRingAnimator = null; 221 private FolderIcon mDragOverFolderIcon = null; 222 private boolean mCreateUserFolderOnDrop = false; 223 private boolean mAddToExistingFolderOnDrop = false; 224 private DropTarget.DragEnforcer mDragEnforcer; 225 private float mMaxDistanceForFolderCreation; 226 227 private final Canvas mCanvas = new Canvas(); 228 229 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 230 private float mXDown; 231 private float mYDown; 232 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 233 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 234 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 235 236 // Relating to the animation of items being dropped externally 237 public static final int ANIMATE_INTO_POSITION_AND_DISAPPEAR = 0; 238 public static final int ANIMATE_INTO_POSITION_AND_REMAIN = 1; 239 public static final int ANIMATE_INTO_POSITION_AND_RESIZE = 2; 240 public static final int COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION = 3; 241 public static final int CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION = 4; 242 243 // Related to dragging, folder creation and reordering 244 private static final int DRAG_MODE_NONE = 0; 245 private static final int DRAG_MODE_CREATE_FOLDER = 1; 246 private static final int DRAG_MODE_ADD_TO_FOLDER = 2; 247 private static final int DRAG_MODE_REORDER = 3; 248 private int mDragMode = DRAG_MODE_NONE; 249 @Thunk int mLastReorderX = -1; 250 @Thunk int mLastReorderY = -1; 251 252 private SparseArray<Parcelable> mSavedStates; 253 private final ArrayList<Integer> mRestoredPages = new ArrayList<Integer>(); 254 255 // These variables are used for storing the initial and final values during workspace animations 256 private int mSavedScrollX; 257 private float mSavedRotationY; 258 private float mSavedTranslationX; 259 260 private float mCurrentScale; 261 private float mTransitionProgress; 262 263 float mOverScrollEffect = 0f; 264 265 @Thunk Runnable mDeferredAction; 266 private boolean mDeferDropAfterUninstall; 267 private boolean mUninstallSuccessful; 268 269 // State related to Launcher Overlay 270 LauncherOverlay mLauncherOverlay; 271 boolean mScrollInteractionBegan; 272 boolean mStartedSendingScrollEvents; 273 boolean mShouldSendPageSettled; 274 int mLastOverlaySroll = 0; 275 276 // Handles workspace state transitions 277 private WorkspaceStateTransitionAnimation mStateTransitionAnimation; 278 279 private final Runnable mBindPages = new Runnable() { 280 @Override 281 public void run() { 282 mLauncher.getModel().bindRemainingSynchronousPages(); 283 } 284 }; 285 286 /** 287 * Used to inflate the Workspace from XML. 288 * 289 * @param context The application's context. 290 * @param attrs The attributes set containing the Workspace's customization values. 291 */ 292 public Workspace(Context context, AttributeSet attrs) { 293 this(context, attrs, 0); 294 } 295 296 /** 297 * Used to inflate the Workspace from XML. 298 * 299 * @param context The application's context. 300 * @param attrs The attributes set containing the Workspace's customization values. 301 * @param defStyle Unused. 302 */ 303 public Workspace(Context context, AttributeSet attrs, int defStyle) { 304 super(context, attrs, defStyle); 305 306 mOutlineHelper = HolographicOutlineHelper.obtain(context); 307 308 mDragEnforcer = new DropTarget.DragEnforcer(context); 309 // With workspace, data is available straight from the get-go 310 311 mLauncher = (Launcher) context; 312 mStateTransitionAnimation = new WorkspaceStateTransitionAnimation(mLauncher, this); 313 final Resources res = getResources(); 314 mWorkspaceFadeInAdjacentScreens = LauncherAppState.getInstance().getDynamicGrid(). 315 getDeviceProfile().shouldFadeAdjacentWorkspaceScreens(); 316 mFadeInAdjacentScreens = false; 317 mWallpaperManager = WallpaperManager.getInstance(context); 318 319 LauncherAppState app = LauncherAppState.getInstance(); 320 DeviceProfile grid = app.getDynamicGrid().getDeviceProfile(); 321 TypedArray a = context.obtainStyledAttributes(attrs, 322 R.styleable.Workspace, defStyle, 0); 323 mSpringLoadedShrinkFactor = 324 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 325 mOverviewModeShrinkFactor = grid.getOverviewModeScale(); 326 mOriginalDefaultPage = mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 327 a.recycle(); 328 329 setOnHierarchyChangeListener(this); 330 setHapticFeedbackEnabled(false); 331 332 initWorkspace(); 333 334 // Disable multitouch across the workspace/all apps/customize tray 335 setMotionEventSplittingEnabled(true); 336 setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 337 } 338 339 @Override 340 public void setInsets(Rect insets) { 341 mInsets.set(insets); 342 343 CellLayout customScreen = getScreenWithId(CUSTOM_CONTENT_SCREEN_ID); 344 if (customScreen != null) { 345 View customContent = customScreen.getShortcutsAndWidgets().getChildAt(0); 346 if (customContent instanceof Insettable) { 347 ((Insettable) customContent).setInsets(mInsets); 348 } 349 } 350 } 351 352 // estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each 353 // dimension if unsuccessful 354 public int[] estimateItemSize(ItemInfo itemInfo, boolean springLoaded) { 355 int[] size = new int[2]; 356 if (getChildCount() > 0) { 357 // Use the first non-custom page to estimate the child position 358 CellLayout cl = (CellLayout) getChildAt(numCustomPages()); 359 Rect r = estimateItemPosition(cl, itemInfo, 0, 0, itemInfo.spanX, itemInfo.spanY); 360 size[0] = r.width(); 361 size[1] = r.height(); 362 if (springLoaded) { 363 size[0] *= mSpringLoadedShrinkFactor; 364 size[1] *= mSpringLoadedShrinkFactor; 365 } 366 return size; 367 } else { 368 size[0] = Integer.MAX_VALUE; 369 size[1] = Integer.MAX_VALUE; 370 return size; 371 } 372 } 373 374 public Rect estimateItemPosition(CellLayout cl, ItemInfo pendingInfo, 375 int hCell, int vCell, int hSpan, int vSpan) { 376 Rect r = new Rect(); 377 cl.cellToRect(hCell, vCell, hSpan, vSpan, r); 378 return r; 379 } 380 381 public void onDragStart(final DragSource source, Object info, int dragAction) { 382 mIsDragOccuring = true; 383 updateChildrenLayersEnabled(false); 384 mLauncher.lockScreenOrientation(); 385 mLauncher.onInteractionBegin(); 386 setChildrenBackgroundAlphaMultipliers(1f); 387 // Prevent any Un/InstallShortcutReceivers from updating the db while we are dragging 388 InstallShortcutReceiver.enableInstallQueue(); 389 post(new Runnable() { 390 @Override 391 public void run() { 392 if (mIsDragOccuring && mAddNewPageOnDrag) { 393 mDeferRemoveExtraEmptyScreen = false; 394 addExtraEmptyScreenOnDrag(); 395 } 396 } 397 }); 398 } 399 400 public void setAddNewPageOnDrag(boolean addPage) { 401 mAddNewPageOnDrag = addPage; 402 } 403 404 public void deferRemoveExtraEmptyScreen() { 405 mDeferRemoveExtraEmptyScreen = true; 406 } 407 408 public void onDragEnd() { 409 if (!mDeferRemoveExtraEmptyScreen) { 410 removeExtraEmptyScreen(true, mDragSourceInternal != null); 411 } 412 413 mIsDragOccuring = false; 414 updateChildrenLayersEnabled(false); 415 mLauncher.unlockScreenOrientation(false); 416 417 // Re-enable any Un/InstallShortcutReceiver and now process any queued items 418 InstallShortcutReceiver.disableAndFlushInstallQueue(getContext()); 419 420 mDragSourceInternal = null; 421 mLauncher.onInteractionEnd(); 422 } 423 424 /** 425 * Initializes various states for this workspace. 426 */ 427 protected void initWorkspace() { 428 mCurrentPage = mDefaultPage; 429 LauncherAppState app = LauncherAppState.getInstance(); 430 DeviceProfile grid = app.getDynamicGrid().getDeviceProfile(); 431 mIconCache = app.getIconCache(); 432 setWillNotDraw(false); 433 setClipChildren(false); 434 setClipToPadding(false); 435 setChildrenDrawnWithCacheEnabled(true); 436 437 setMinScale(mOverviewModeShrinkFactor); 438 setupLayoutTransition(); 439 440 mWallpaperOffset = new WallpaperOffsetInterpolator(); 441 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 442 display.getSize(mDisplaySize); 443 444 mMaxDistanceForFolderCreation = (0.55f * grid.iconSizePx); 445 446 // Set the wallpaper dimensions when Launcher starts up 447 setWallpaperDimension(); 448 } 449 450 private void setupLayoutTransition() { 451 // We want to show layout transitions when pages are deleted, to close the gap. 452 mLayoutTransition = new LayoutTransition(); 453 mLayoutTransition.enableTransitionType(LayoutTransition.DISAPPEARING); 454 mLayoutTransition.enableTransitionType(LayoutTransition.CHANGE_DISAPPEARING); 455 mLayoutTransition.disableTransitionType(LayoutTransition.APPEARING); 456 mLayoutTransition.disableTransitionType(LayoutTransition.CHANGE_APPEARING); 457 setLayoutTransition(mLayoutTransition); 458 } 459 460 void enableLayoutTransitions() { 461 setLayoutTransition(mLayoutTransition); 462 } 463 void disableLayoutTransitions() { 464 setLayoutTransition(null); 465 } 466 467 @Override 468 protected int getScrollMode() { 469 return SmoothPagedView.X_LARGE_MODE; 470 } 471 472 @Override 473 public void onChildViewAdded(View parent, View child) { 474 if (!(child instanceof CellLayout)) { 475 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 476 } 477 CellLayout cl = ((CellLayout) child); 478 cl.setOnInterceptTouchListener(this); 479 cl.setClickable(true); 480 cl.setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_NO); 481 super.onChildViewAdded(parent, child); 482 } 483 484 protected boolean shouldDrawChild(View child) { 485 final CellLayout cl = (CellLayout) child; 486 return super.shouldDrawChild(child) && 487 (mIsSwitchingState || 488 cl.getShortcutsAndWidgets().getAlpha() > 0 || 489 cl.getBackgroundAlpha() > 0); 490 } 491 492 /** 493 * @return The open folder on the current screen, or null if there is none 494 */ 495 Folder getOpenFolder() { 496 DragLayer dragLayer = mLauncher.getDragLayer(); 497 int count = dragLayer.getChildCount(); 498 for (int i = 0; i < count; i++) { 499 View child = dragLayer.getChildAt(i); 500 if (child instanceof Folder) { 501 Folder folder = (Folder) child; 502 if (folder.getInfo().opened) 503 return folder; 504 } 505 } 506 return null; 507 } 508 509 boolean isTouchActive() { 510 return mTouchState != TOUCH_STATE_REST; 511 } 512 513 public void removeAllWorkspaceScreens() { 514 // Disable all layout transitions before removing all pages to ensure that we don't get the 515 // transition animations competing with us changing the scroll when we add pages or the 516 // custom content screen 517 disableLayoutTransitions(); 518 519 // Since we increment the current page when we call addCustomContentPage via bindScreens 520 // (and other places), we need to adjust the current page back when we clear the pages 521 if (hasCustomContent()) { 522 removeCustomContentPage(); 523 } 524 525 // Remove the pages and clear the screen models 526 removeAllViews(); 527 mScreenOrder.clear(); 528 mWorkspaceScreens.clear(); 529 530 // Re-enable the layout transitions 531 enableLayoutTransitions(); 532 } 533 534 public long insertNewWorkspaceScreenBeforeEmptyScreen(long screenId) { 535 // Find the index to insert this view into. If the empty screen exists, then 536 // insert it before that. 537 int insertIndex = mScreenOrder.indexOf(EXTRA_EMPTY_SCREEN_ID); 538 if (insertIndex < 0) { 539 insertIndex = mScreenOrder.size(); 540 } 541 return insertNewWorkspaceScreen(screenId, insertIndex); 542 } 543 544 public long insertNewWorkspaceScreen(long screenId) { 545 return insertNewWorkspaceScreen(screenId, getChildCount()); 546 } 547 548 public long insertNewWorkspaceScreen(long screenId, int insertIndex) { 549 if (mWorkspaceScreens.containsKey(screenId)) { 550 throw new RuntimeException("Screen id " + screenId + " already exists!"); 551 } 552 553 CellLayout newScreen = (CellLayout) 554 mLauncher.getLayoutInflater().inflate(R.layout.workspace_screen, null); 555 556 newScreen.setOnLongClickListener(mLongClickListener); 557 newScreen.setOnClickListener(mLauncher); 558 newScreen.setSoundEffectsEnabled(false); 559 mWorkspaceScreens.put(screenId, newScreen); 560 mScreenOrder.add(insertIndex, screenId); 561 addView(newScreen, insertIndex); 562 563 LauncherAccessibilityDelegate delegate = 564 LauncherAppState.getInstance().getAccessibilityDelegate(); 565 if (delegate != null && delegate.isInAccessibleDrag()) { 566 newScreen.enableAccessibleDrag(true, CellLayout.WORKSPACE_ACCESSIBILITY_DRAG); 567 } 568 return screenId; 569 } 570 571 public void createCustomContentContainer() { 572 CellLayout customScreen = (CellLayout) 573 mLauncher.getLayoutInflater().inflate(R.layout.workspace_screen, null); 574 customScreen.disableBackground(); 575 customScreen.disableDragTarget(); 576 577 mWorkspaceScreens.put(CUSTOM_CONTENT_SCREEN_ID, customScreen); 578 mScreenOrder.add(0, CUSTOM_CONTENT_SCREEN_ID); 579 580 // We want no padding on the custom content 581 customScreen.setPadding(0, 0, 0, 0); 582 583 addFullScreenPage(customScreen); 584 585 // Ensure that the current page and default page are maintained. 586 mDefaultPage = mOriginalDefaultPage + 1; 587 588 // Update the custom content hint 589 if (mRestorePage != INVALID_RESTORE_PAGE) { 590 mRestorePage = mRestorePage + 1; 591 } else { 592 setCurrentPage(getCurrentPage() + 1); 593 } 594 } 595 596 public void removeCustomContentPage() { 597 CellLayout customScreen = getScreenWithId(CUSTOM_CONTENT_SCREEN_ID); 598 if (customScreen == null) { 599 throw new RuntimeException("Expected custom content screen to exist"); 600 } 601 602 mWorkspaceScreens.remove(CUSTOM_CONTENT_SCREEN_ID); 603 mScreenOrder.remove(CUSTOM_CONTENT_SCREEN_ID); 604 removeView(customScreen); 605 606 if (mCustomContentCallbacks != null) { 607 mCustomContentCallbacks.onScrollProgressChanged(0); 608 mCustomContentCallbacks.onHide(); 609 } 610 611 mCustomContentCallbacks = null; 612 613 // Ensure that the current page and default page are maintained. 614 mDefaultPage = mOriginalDefaultPage - 1; 615 616 // Update the custom content hint 617 if (mRestorePage != INVALID_RESTORE_PAGE) { 618 mRestorePage = mRestorePage - 1; 619 } else { 620 setCurrentPage(getCurrentPage() - 1); 621 } 622 } 623 624 public void addToCustomContentPage(View customContent, CustomContentCallbacks callbacks, 625 String description) { 626 if (getPageIndexForScreenId(CUSTOM_CONTENT_SCREEN_ID) < 0) { 627 throw new RuntimeException("Expected custom content screen to exist"); 628 } 629 630 // Add the custom content to the full screen custom page 631 CellLayout customScreen = getScreenWithId(CUSTOM_CONTENT_SCREEN_ID); 632 int spanX = customScreen.getCountX(); 633 int spanY = customScreen.getCountY(); 634 CellLayout.LayoutParams lp = new CellLayout.LayoutParams(0, 0, spanX, spanY); 635 lp.canReorder = false; 636 lp.isFullscreen = true; 637 if (customContent instanceof Insettable) { 638 ((Insettable)customContent).setInsets(mInsets); 639 } 640 641 // Verify that the child is removed from any existing parent. 642 if (customContent.getParent() instanceof ViewGroup) { 643 ViewGroup parent = (ViewGroup) customContent.getParent(); 644 parent.removeView(customContent); 645 } 646 customScreen.removeAllViews(); 647 customScreen.addViewToCellLayout(customContent, 0, 0, lp, true); 648 mCustomContentDescription = description; 649 650 mCustomContentCallbacks = callbacks; 651 } 652 653 public void addExtraEmptyScreenOnDrag() { 654 boolean lastChildOnScreen = false; 655 boolean childOnFinalScreen = false; 656 657 // Cancel any pending removal of empty screen 658 mRemoveEmptyScreenRunnable = null; 659 660 if (mDragSourceInternal != null) { 661 if (mDragSourceInternal.getChildCount() == 1) { 662 lastChildOnScreen = true; 663 } 664 CellLayout cl = (CellLayout) mDragSourceInternal.getParent(); 665 if (indexOfChild(cl) == getChildCount() - 1) { 666 childOnFinalScreen = true; 667 } 668 } 669 670 // If this is the last item on the final screen 671 if (lastChildOnScreen && childOnFinalScreen) { 672 return; 673 } 674 if (!mWorkspaceScreens.containsKey(EXTRA_EMPTY_SCREEN_ID)) { 675 insertNewWorkspaceScreen(EXTRA_EMPTY_SCREEN_ID); 676 } 677 } 678 679 public boolean addExtraEmptyScreen() { 680 if (!mWorkspaceScreens.containsKey(EXTRA_EMPTY_SCREEN_ID)) { 681 insertNewWorkspaceScreen(EXTRA_EMPTY_SCREEN_ID); 682 return true; 683 } 684 return false; 685 } 686 687 private void convertFinalScreenToEmptyScreenIfNecessary() { 688 if (mLauncher.isWorkspaceLoading()) { 689 // Invalid and dangerous operation if workspace is loading 690 Launcher.addDumpLog(TAG, " - workspace loading, skip", true); 691 return; 692 } 693 694 if (hasExtraEmptyScreen() || mScreenOrder.size() == 0) return; 695 long finalScreenId = mScreenOrder.get(mScreenOrder.size() - 1); 696 697 if (finalScreenId == CUSTOM_CONTENT_SCREEN_ID) return; 698 CellLayout finalScreen = mWorkspaceScreens.get(finalScreenId); 699 700 // If the final screen is empty, convert it to the extra empty screen 701 if (finalScreen.getShortcutsAndWidgets().getChildCount() == 0 && 702 !finalScreen.isDropPending()) { 703 mWorkspaceScreens.remove(finalScreenId); 704 mScreenOrder.remove(finalScreenId); 705 706 // if this is the last non-custom content screen, convert it to the empty screen 707 mWorkspaceScreens.put(EXTRA_EMPTY_SCREEN_ID, finalScreen); 708 mScreenOrder.add(EXTRA_EMPTY_SCREEN_ID); 709 710 // Update the model if we have changed any screens 711 mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); 712 } 713 } 714 715 public void removeExtraEmptyScreen(final boolean animate, boolean stripEmptyScreens) { 716 removeExtraEmptyScreenDelayed(animate, null, 0, stripEmptyScreens); 717 } 718 719 public void removeExtraEmptyScreenDelayed(final boolean animate, final Runnable onComplete, 720 final int delay, final boolean stripEmptyScreens) { 721 if (mLauncher.isWorkspaceLoading()) { 722 // Don't strip empty screens if the workspace is still loading 723 Launcher.addDumpLog(TAG, " - workspace loading, skip", true); 724 return; 725 } 726 727 if (delay > 0) { 728 postDelayed(new Runnable() { 729 @Override 730 public void run() { 731 removeExtraEmptyScreenDelayed(animate, onComplete, 0, stripEmptyScreens); 732 } 733 }, delay); 734 return; 735 } 736 737 convertFinalScreenToEmptyScreenIfNecessary(); 738 if (hasExtraEmptyScreen()) { 739 int emptyIndex = mScreenOrder.indexOf(EXTRA_EMPTY_SCREEN_ID); 740 if (getNextPage() == emptyIndex) { 741 snapToPage(getNextPage() - 1, SNAP_OFF_EMPTY_SCREEN_DURATION); 742 fadeAndRemoveEmptyScreen(SNAP_OFF_EMPTY_SCREEN_DURATION, FADE_EMPTY_SCREEN_DURATION, 743 onComplete, stripEmptyScreens); 744 } else { 745 fadeAndRemoveEmptyScreen(0, FADE_EMPTY_SCREEN_DURATION, 746 onComplete, stripEmptyScreens); 747 } 748 return; 749 } else if (stripEmptyScreens) { 750 // If we're not going to strip the empty screens after removing 751 // the extra empty screen, do it right away. 752 stripEmptyScreens(); 753 } 754 755 if (onComplete != null) { 756 onComplete.run(); 757 } 758 } 759 760 private void fadeAndRemoveEmptyScreen(int delay, int duration, final Runnable onComplete, 761 final boolean stripEmptyScreens) { 762 // XXX: Do we need to update LM workspace screens below? 763 PropertyValuesHolder alpha = PropertyValuesHolder.ofFloat("alpha", 0f); 764 PropertyValuesHolder bgAlpha = PropertyValuesHolder.ofFloat("backgroundAlpha", 0f); 765 766 final CellLayout cl = mWorkspaceScreens.get(EXTRA_EMPTY_SCREEN_ID); 767 768 mRemoveEmptyScreenRunnable = new Runnable() { 769 @Override 770 public void run() { 771 if (hasExtraEmptyScreen()) { 772 mWorkspaceScreens.remove(EXTRA_EMPTY_SCREEN_ID); 773 mScreenOrder.remove(EXTRA_EMPTY_SCREEN_ID); 774 removeView(cl); 775 if (stripEmptyScreens) { 776 stripEmptyScreens(); 777 } 778 } 779 } 780 }; 781 782 ObjectAnimator oa = ObjectAnimator.ofPropertyValuesHolder(cl, alpha, bgAlpha); 783 oa.setDuration(duration); 784 oa.setStartDelay(delay); 785 oa.addListener(new AnimatorListenerAdapter() { 786 @Override 787 public void onAnimationEnd(Animator animation) { 788 if (mRemoveEmptyScreenRunnable != null) { 789 mRemoveEmptyScreenRunnable.run(); 790 } 791 if (onComplete != null) { 792 onComplete.run(); 793 } 794 } 795 }); 796 oa.start(); 797 } 798 799 public boolean hasExtraEmptyScreen() { 800 int nScreens = getChildCount(); 801 nScreens = nScreens - numCustomPages(); 802 return mWorkspaceScreens.containsKey(EXTRA_EMPTY_SCREEN_ID) && nScreens > 1; 803 } 804 805 public long commitExtraEmptyScreen() { 806 if (mLauncher.isWorkspaceLoading()) { 807 // Invalid and dangerous operation if workspace is loading 808 Launcher.addDumpLog(TAG, " - workspace loading, skip", true); 809 return -1; 810 } 811 812 int index = getPageIndexForScreenId(EXTRA_EMPTY_SCREEN_ID); 813 CellLayout cl = mWorkspaceScreens.get(EXTRA_EMPTY_SCREEN_ID); 814 mWorkspaceScreens.remove(EXTRA_EMPTY_SCREEN_ID); 815 mScreenOrder.remove(EXTRA_EMPTY_SCREEN_ID); 816 817 long newId = LauncherAppState.getLauncherProvider().generateNewScreenId(); 818 mWorkspaceScreens.put(newId, cl); 819 mScreenOrder.add(newId); 820 821 // Update the page indicator marker 822 if (getPageIndicator() != null) { 823 getPageIndicator().updateMarker(index, getPageIndicatorMarker(index)); 824 } 825 826 // Update the model for the new screen 827 mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); 828 829 return newId; 830 } 831 832 public CellLayout getScreenWithId(long screenId) { 833 CellLayout layout = mWorkspaceScreens.get(screenId); 834 return layout; 835 } 836 837 public long getIdForScreen(CellLayout layout) { 838 int index = mWorkspaceScreens.indexOfValue(layout); 839 if (index != -1) { 840 return mWorkspaceScreens.keyAt(index); 841 } 842 return -1; 843 } 844 845 public int getPageIndexForScreenId(long screenId) { 846 return indexOfChild(mWorkspaceScreens.get(screenId)); 847 } 848 849 public long getScreenIdForPageIndex(int index) { 850 if (0 <= index && index < mScreenOrder.size()) { 851 return mScreenOrder.get(index); 852 } 853 return -1; 854 } 855 856 ArrayList<Long> getScreenOrder() { 857 return mScreenOrder; 858 } 859 860 public void stripEmptyScreens() { 861 if (mLauncher.isWorkspaceLoading()) { 862 // Don't strip empty screens if the workspace is still loading. 863 // This is dangerous and can result in data loss. 864 Launcher.addDumpLog(TAG, " - workspace loading, skip", true); 865 return; 866 } 867 868 if (isPageMoving()) { 869 mStripScreensOnPageStopMoving = true; 870 return; 871 } 872 873 int currentPage = getNextPage(); 874 ArrayList<Long> removeScreens = new ArrayList<Long>(); 875 int total = mWorkspaceScreens.size(); 876 for (int i = 0; i < total; i++) { 877 long id = mWorkspaceScreens.keyAt(i); 878 CellLayout cl = mWorkspaceScreens.valueAt(i); 879 if (id >= 0 && cl.getShortcutsAndWidgets().getChildCount() == 0) { 880 removeScreens.add(id); 881 } 882 } 883 884 // We enforce at least one page to add new items to. In the case that we remove the last 885 // such screen, we convert the last screen to the empty screen 886 int minScreens = 1 + numCustomPages(); 887 888 int pageShift = 0; 889 for (Long id: removeScreens) { 890 CellLayout cl = mWorkspaceScreens.get(id); 891 mWorkspaceScreens.remove(id); 892 mScreenOrder.remove(id); 893 894 if (getChildCount() > minScreens) { 895 if (indexOfChild(cl) < currentPage) { 896 pageShift++; 897 } 898 removeView(cl); 899 } else { 900 // if this is the last non-custom content screen, convert it to the empty screen 901 mRemoveEmptyScreenRunnable = null; 902 mWorkspaceScreens.put(EXTRA_EMPTY_SCREEN_ID, cl); 903 mScreenOrder.add(EXTRA_EMPTY_SCREEN_ID); 904 } 905 } 906 907 if (!removeScreens.isEmpty()) { 908 // Update the model if we have changed any screens 909 mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); 910 } 911 912 if (pageShift >= 0) { 913 setCurrentPage(currentPage - pageShift); 914 } 915 } 916 917 // See implementation for parameter definition. 918 void addInScreen(View child, long container, long screenId, 919 int x, int y, int spanX, int spanY) { 920 addInScreen(child, container, screenId, x, y, spanX, spanY, false, false); 921 } 922 923 // At bind time, we use the rank (screenId) to compute x and y for hotseat items. 924 // See implementation for parameter definition. 925 void addInScreenFromBind(View child, long container, long screenId, int x, int y, 926 int spanX, int spanY) { 927 addInScreen(child, container, screenId, x, y, spanX, spanY, false, true); 928 } 929 930 // See implementation for parameter definition. 931 void addInScreen(View child, long container, long screenId, int x, int y, int spanX, int spanY, 932 boolean insert) { 933 addInScreen(child, container, screenId, x, y, spanX, spanY, insert, false); 934 } 935 936 /** 937 * Adds the specified child in the specified screen. The position and dimension of 938 * the child are defined by x, y, spanX and spanY. 939 * 940 * @param child The child to add in one of the workspace's screens. 941 * @param screenId The screen in which to add the child. 942 * @param x The X position of the child in the screen's grid. 943 * @param y The Y position of the child in the screen's grid. 944 * @param spanX The number of cells spanned horizontally by the child. 945 * @param spanY The number of cells spanned vertically by the child. 946 * @param insert When true, the child is inserted at the beginning of the children list. 947 * @param computeXYFromRank When true, we use the rank (stored in screenId) to compute 948 * the x and y position in which to place hotseat items. Otherwise 949 * we use the x and y position to compute the rank. 950 */ 951 void addInScreen(View child, long container, long screenId, int x, int y, int spanX, int spanY, 952 boolean insert, boolean computeXYFromRank) { 953 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 954 if (getScreenWithId(screenId) == null) { 955 Log.e(TAG, "Skipping child, screenId " + screenId + " not found"); 956 // DEBUGGING - Print out the stack trace to see where we are adding from 957 new Throwable().printStackTrace(); 958 return; 959 } 960 } 961 if (screenId == EXTRA_EMPTY_SCREEN_ID) { 962 // This should never happen 963 throw new RuntimeException("Screen id should not be EXTRA_EMPTY_SCREEN_ID"); 964 } 965 966 final CellLayout layout; 967 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 968 layout = mLauncher.getHotseat().getLayout(); 969 child.setOnKeyListener(new HotseatIconKeyEventListener()); 970 971 // Hide folder title in the hotseat 972 if (child instanceof FolderIcon) { 973 ((FolderIcon) child).setTextVisible(false); 974 } 975 976 if (computeXYFromRank) { 977 x = mLauncher.getHotseat().getCellXFromOrder((int) screenId); 978 y = mLauncher.getHotseat().getCellYFromOrder((int) screenId); 979 } else { 980 screenId = mLauncher.getHotseat().getOrderInHotseat(x, y); 981 } 982 } else { 983 // Show folder title if not in the hotseat 984 if (child instanceof FolderIcon) { 985 ((FolderIcon) child).setTextVisible(true); 986 } 987 layout = getScreenWithId(screenId); 988 child.setOnKeyListener(new IconKeyEventListener()); 989 } 990 991 ViewGroup.LayoutParams genericLp = child.getLayoutParams(); 992 CellLayout.LayoutParams lp; 993 if (genericLp == null || !(genericLp instanceof CellLayout.LayoutParams)) { 994 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 995 } else { 996 lp = (CellLayout.LayoutParams) genericLp; 997 lp.cellX = x; 998 lp.cellY = y; 999 lp.cellHSpan = spanX; 1000 lp.cellVSpan = spanY; 1001 } 1002 1003 if (spanX < 0 && spanY < 0) { 1004 lp.isLockedToGrid = false; 1005 } 1006 1007 // Get the canonical child id to uniquely represent this view in this screen 1008 ItemInfo info = (ItemInfo) child.getTag(); 1009 int childId = mLauncher.getViewIdForItem(info); 1010 1011 boolean markCellsAsOccupied = !(child instanceof Folder); 1012 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 1013 // TODO: This branch occurs when the workspace is adding views 1014 // outside of the defined grid 1015 // maybe we should be deleting these items from the LauncherModel? 1016 Launcher.addDumpLog(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout", true); 1017 } 1018 1019 if (!(child instanceof Folder)) { 1020 child.setHapticFeedbackEnabled(false); 1021 child.setOnLongClickListener(mLongClickListener); 1022 } 1023 if (child instanceof DropTarget) { 1024 mDragController.addDropTarget((DropTarget) child); 1025 } 1026 } 1027 1028 /** 1029 * Called directly from a CellLayout (not by the framework), after we've been added as a 1030 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 1031 * that it should intercept touch events, which is not something that is normally supported. 1032 */ 1033 @Override 1034 public boolean onTouch(View v, MotionEvent event) { 1035 return (workspaceInModalState() || !isFinishedSwitchingState()) 1036 || (!workspaceInModalState() && indexOfChild(v) != mCurrentPage); 1037 } 1038 1039 public boolean isSwitchingState() { 1040 return mIsSwitchingState; 1041 } 1042 1043 /** This differs from isSwitchingState in that we take into account how far the transition 1044 * has completed. */ 1045 public boolean isFinishedSwitchingState() { 1046 return !mIsSwitchingState || (mTransitionProgress > 0.5f); 1047 } 1048 1049 protected void onWindowVisibilityChanged (int visibility) { 1050 mLauncher.onWindowVisibilityChanged(visibility); 1051 } 1052 1053 @Override 1054 public boolean dispatchUnhandledMove(View focused, int direction) { 1055 if (workspaceInModalState() || !isFinishedSwitchingState()) { 1056 // when the home screens are shrunken, shouldn't allow side-scrolling 1057 return false; 1058 } 1059 return super.dispatchUnhandledMove(focused, direction); 1060 } 1061 1062 @Override 1063 public boolean onInterceptTouchEvent(MotionEvent ev) { 1064 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 1065 case MotionEvent.ACTION_DOWN: 1066 mXDown = ev.getX(); 1067 mYDown = ev.getY(); 1068 mTouchDownTime = System.currentTimeMillis(); 1069 break; 1070 case MotionEvent.ACTION_POINTER_UP: 1071 case MotionEvent.ACTION_UP: 1072 if (mTouchState == TOUCH_STATE_REST) { 1073 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 1074 if (currentPage != null && !currentPage.lastDownOnOccupiedCell()) { 1075 onWallpaperTap(ev); 1076 } 1077 } 1078 } 1079 return super.onInterceptTouchEvent(ev); 1080 } 1081 1082 @Override 1083 public boolean onGenericMotionEvent(MotionEvent event) { 1084 // Ignore pointer scroll events if the custom content doesn't allow scrolling. 1085 if ((getScreenIdForPageIndex(getCurrentPage()) == CUSTOM_CONTENT_SCREEN_ID) 1086 && (mCustomContentCallbacks != null) 1087 && !mCustomContentCallbacks.isScrollingAllowed()) { 1088 return false; 1089 } 1090 return super.onGenericMotionEvent(event); 1091 } 1092 1093 protected void reinflateWidgetsIfNecessary() { 1094 final int clCount = getChildCount(); 1095 for (int i = 0; i < clCount; i++) { 1096 CellLayout cl = (CellLayout) getChildAt(i); 1097 ShortcutAndWidgetContainer swc = cl.getShortcutsAndWidgets(); 1098 final int itemCount = swc.getChildCount(); 1099 for (int j = 0; j < itemCount; j++) { 1100 View v = swc.getChildAt(j); 1101 1102 if (v != null && v.getTag() instanceof LauncherAppWidgetInfo) { 1103 LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) v.getTag(); 1104 LauncherAppWidgetHostView lahv = (LauncherAppWidgetHostView) info.hostView; 1105 if (lahv != null && lahv.isReinflateRequired()) { 1106 mLauncher.removeAppWidget(info); 1107 // Remove the current widget which is inflated with the wrong orientation 1108 cl.removeView(lahv); 1109 mLauncher.bindAppWidget(info); 1110 } 1111 } 1112 } 1113 } 1114 } 1115 1116 @Override 1117 protected void determineScrollingStart(MotionEvent ev) { 1118 if (!isFinishedSwitchingState()) return; 1119 1120 float deltaX = ev.getX() - mXDown; 1121 float absDeltaX = Math.abs(deltaX); 1122 float absDeltaY = Math.abs(ev.getY() - mYDown); 1123 1124 if (Float.compare(absDeltaX, 0f) == 0) return; 1125 1126 float slope = absDeltaY / absDeltaX; 1127 float theta = (float) Math.atan(slope); 1128 1129 if (absDeltaX > mTouchSlop || absDeltaY > mTouchSlop) { 1130 cancelCurrentPageLongPress(); 1131 } 1132 1133 boolean passRightSwipesToCustomContent = 1134 (mTouchDownTime - mCustomContentShowTime) > CUSTOM_CONTENT_GESTURE_DELAY; 1135 1136 boolean swipeInIgnoreDirection = isLayoutRtl() ? deltaX < 0 : deltaX > 0; 1137 boolean onCustomContentScreen = 1138 getScreenIdForPageIndex(getCurrentPage()) == CUSTOM_CONTENT_SCREEN_ID; 1139 if (swipeInIgnoreDirection && onCustomContentScreen && passRightSwipesToCustomContent) { 1140 // Pass swipes to the right to the custom content page. 1141 return; 1142 } 1143 1144 if (onCustomContentScreen && (mCustomContentCallbacks != null) 1145 && !mCustomContentCallbacks.isScrollingAllowed()) { 1146 // Don't allow workspace scrolling if the current custom content screen doesn't allow 1147 // scrolling. 1148 return; 1149 } 1150 1151 if (theta > MAX_SWIPE_ANGLE) { 1152 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 1153 return; 1154 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 1155 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 1156 // increase the touch slop to make it harder to begin scrolling the workspace. This 1157 // results in vertically scrolling widgets to more easily. The higher the angle, the 1158 // more we increase touch slop. 1159 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 1160 float extraRatio = (float) 1161 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 1162 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 1163 } else { 1164 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 1165 super.determineScrollingStart(ev); 1166 } 1167 } 1168 1169 protected void onPageBeginMoving() { 1170 super.onPageBeginMoving(); 1171 1172 if (isHardwareAccelerated()) { 1173 updateChildrenLayersEnabled(false); 1174 } else { 1175 if (mNextPage != INVALID_PAGE) { 1176 // we're snapping to a particular screen 1177 enableChildrenCache(mCurrentPage, mNextPage); 1178 } else { 1179 // this is when user is actively dragging a particular screen, they might 1180 // swipe it either left or right (but we won't advance by more than one screen) 1181 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 1182 } 1183 } 1184 } 1185 1186 protected void onPageEndMoving() { 1187 super.onPageEndMoving(); 1188 1189 if (isHardwareAccelerated()) { 1190 updateChildrenLayersEnabled(false); 1191 } else { 1192 clearChildrenCache(); 1193 } 1194 1195 if (mDragController.isDragging()) { 1196 if (workspaceInModalState()) { 1197 // If we are in springloaded mode, then force an event to check if the current touch 1198 // is under a new page (to scroll to) 1199 mDragController.forceTouchMove(); 1200 } 1201 } 1202 1203 if (mDelayedResizeRunnable != null) { 1204 mDelayedResizeRunnable.run(); 1205 mDelayedResizeRunnable = null; 1206 } 1207 1208 if (mDelayedSnapToPageRunnable != null) { 1209 mDelayedSnapToPageRunnable.run(); 1210 mDelayedSnapToPageRunnable = null; 1211 } 1212 if (mStripScreensOnPageStopMoving) { 1213 stripEmptyScreens(); 1214 mStripScreensOnPageStopMoving = false; 1215 } 1216 1217 if (mShouldSendPageSettled) { 1218 mLauncherOverlay.onScrollSettled(); 1219 mShouldSendPageSettled = false; 1220 } 1221 } 1222 1223 protected void onScrollInteractionBegin() { 1224 super.onScrollInteractionEnd(); 1225 mScrollInteractionBegan = true; 1226 } 1227 1228 protected void onScrollInteractionEnd() { 1229 super.onScrollInteractionEnd(); 1230 mScrollInteractionBegan = false; 1231 if (mStartedSendingScrollEvents) { 1232 mStartedSendingScrollEvents = false; 1233 mLauncherOverlay.onScrollInteractionEnd(); 1234 } 1235 } 1236 1237 public void setLauncherOverlay(LauncherOverlay overlay) { 1238 mLauncherOverlay = overlay; 1239 } 1240 1241 @Override 1242 protected void overScroll(float amount) { 1243 boolean isRtl = isLayoutRtl(); 1244 boolean shouldOverScroll = (amount <= 0 && (!hasCustomContent() || isRtl)) || 1245 (amount >= 0 && (!hasCustomContent() || !isRtl)); 1246 1247 boolean shouldScrollOverlay = mLauncherOverlay != null && 1248 ((amount <= 0 && !isRtl) || (amount >= 0 && isRtl)); 1249 1250 boolean shouldZeroOverlay = mLauncherOverlay != null && mLastOverlaySroll != 0 && 1251 ((amount >= 0 && !isRtl) || (amount <= 0 && isRtl)); 1252 1253 if (shouldScrollOverlay) { 1254 if (!mStartedSendingScrollEvents && mScrollInteractionBegan) { 1255 mStartedSendingScrollEvents = true; 1256 mLauncherOverlay.onScrollInteractionBegin(); 1257 mShouldSendPageSettled = true; 1258 } 1259 int screenSize = getViewportWidth(); 1260 float f = (amount / screenSize); 1261 1262 int progress = (int) Math.abs((f * 100)); 1263 1264 mLastOverlaySroll = progress; 1265 mLauncherOverlay.onScrollChange(progress, isRtl); 1266 } else if (shouldOverScroll) { 1267 dampedOverScroll(amount); 1268 mOverScrollEffect = acceleratedOverFactor(amount); 1269 } else { 1270 mOverScrollEffect = 0; 1271 } 1272 1273 if (shouldZeroOverlay) { 1274 mLauncherOverlay.onScrollChange(0, isRtl); 1275 } 1276 } 1277 1278 @Override 1279 protected void notifyPageSwitchListener() { 1280 super.notifyPageSwitchListener(); 1281 1282 if (hasCustomContent() && getNextPage() == 0 && !mCustomContentShowing) { 1283 mCustomContentShowing = true; 1284 if (mCustomContentCallbacks != null) { 1285 mCustomContentCallbacks.onShow(false); 1286 mCustomContentShowTime = System.currentTimeMillis(); 1287 } 1288 } else if (hasCustomContent() && getNextPage() != 0 && mCustomContentShowing) { 1289 mCustomContentShowing = false; 1290 if (mCustomContentCallbacks != null) { 1291 mCustomContentCallbacks.onHide(); 1292 } 1293 } 1294 } 1295 1296 protected CustomContentCallbacks getCustomContentCallbacks() { 1297 return mCustomContentCallbacks; 1298 } 1299 1300 protected void setWallpaperDimension() { 1301 new AsyncTask<Void, Void, Void>() { 1302 public Void doInBackground(Void ... args) { 1303 String spKey = LauncherFiles.WALLPAPER_CROP_PREFERENCES_KEY; 1304 SharedPreferences sp = 1305 mLauncher.getSharedPreferences(spKey, Context.MODE_MULTI_PROCESS); 1306 WallpaperUtils.suggestWallpaperDimension(mLauncher.getResources(), 1307 sp, mLauncher.getWindowManager(), mWallpaperManager, 1308 mLauncher.overrideWallpaperDimensions()); 1309 return null; 1310 } 1311 }.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, (Void) null); 1312 } 1313 1314 protected void snapToPage(int whichPage, Runnable r) { 1315 snapToPage(whichPage, SLOW_PAGE_SNAP_ANIMATION_DURATION, r); 1316 } 1317 1318 protected void snapToPage(int whichPage, int duration, Runnable r) { 1319 if (mDelayedSnapToPageRunnable != null) { 1320 mDelayedSnapToPageRunnable.run(); 1321 } 1322 mDelayedSnapToPageRunnable = r; 1323 snapToPage(whichPage, duration); 1324 } 1325 1326 public void snapToScreenId(long screenId) { 1327 snapToScreenId(screenId, null); 1328 } 1329 1330 protected void snapToScreenId(long screenId, Runnable r) { 1331 snapToPage(getPageIndexForScreenId(screenId), r); 1332 } 1333 1334 class WallpaperOffsetInterpolator implements Choreographer.FrameCallback { 1335 float mFinalOffset = 0.0f; 1336 float mCurrentOffset = 0.5f; // to force an initial update 1337 boolean mWaitingForUpdate; 1338 Choreographer mChoreographer; 1339 Interpolator mInterpolator; 1340 boolean mAnimating; 1341 long mAnimationStartTime; 1342 float mAnimationStartOffset; 1343 private final int ANIMATION_DURATION = 250; 1344 // Don't use all the wallpaper for parallax until you have at least this many pages 1345 private final int MIN_PARALLAX_PAGE_SPAN = 3; 1346 int mNumScreens; 1347 1348 public WallpaperOffsetInterpolator() { 1349 mChoreographer = Choreographer.getInstance(); 1350 mInterpolator = new DecelerateInterpolator(1.5f); 1351 } 1352 1353 @Override 1354 public void doFrame(long frameTimeNanos) { 1355 updateOffset(false); 1356 } 1357 1358 private void updateOffset(boolean force) { 1359 if (mWaitingForUpdate || force) { 1360 mWaitingForUpdate = false; 1361 if (computeScrollOffset() && mWindowToken != null) { 1362 try { 1363 mWallpaperManager.setWallpaperOffsets(mWindowToken, 1364 mWallpaperOffset.getCurrX(), 0.5f); 1365 setWallpaperOffsetSteps(); 1366 } catch (IllegalArgumentException e) { 1367 Log.e(TAG, "Error updating wallpaper offset: " + e); 1368 } 1369 } 1370 } 1371 } 1372 1373 public boolean computeScrollOffset() { 1374 final float oldOffset = mCurrentOffset; 1375 if (mAnimating) { 1376 long durationSinceAnimation = System.currentTimeMillis() - mAnimationStartTime; 1377 float t0 = durationSinceAnimation / (float) ANIMATION_DURATION; 1378 float t1 = mInterpolator.getInterpolation(t0); 1379 mCurrentOffset = mAnimationStartOffset + 1380 (mFinalOffset - mAnimationStartOffset) * t1; 1381 mAnimating = durationSinceAnimation < ANIMATION_DURATION; 1382 } else { 1383 mCurrentOffset = mFinalOffset; 1384 } 1385 1386 if (Math.abs(mCurrentOffset - mFinalOffset) > 0.0000001f) { 1387 scheduleUpdate(); 1388 } 1389 if (Math.abs(oldOffset - mCurrentOffset) > 0.0000001f) { 1390 return true; 1391 } 1392 return false; 1393 } 1394 1395 private float wallpaperOffsetForCurrentScroll() { 1396 // TODO: do different behavior if it's a live wallpaper? 1397 // Don't use up all the wallpaper parallax until you have at least 1398 // MIN_PARALLAX_PAGE_SPAN pages 1399 int numScrollingPages = getNumScreensExcludingEmptyAndCustom(); 1400 int parallaxPageSpan; 1401 if (mWallpaperIsLiveWallpaper) { 1402 parallaxPageSpan = numScrollingPages - 1; 1403 } else { 1404 parallaxPageSpan = Math.max(MIN_PARALLAX_PAGE_SPAN, numScrollingPages - 1); 1405 } 1406 mNumPagesForWallpaperParallax = parallaxPageSpan; 1407 1408 if (getChildCount() <= 1) { 1409 if (isLayoutRtl()) { 1410 return 1 - 1.0f/mNumPagesForWallpaperParallax; 1411 } 1412 return 0; 1413 } 1414 1415 // Exclude the leftmost page 1416 int emptyExtraPages = numEmptyScreensToIgnore(); 1417 int firstIndex = numCustomPages(); 1418 // Exclude the last extra empty screen (if we have > MIN_PARALLAX_PAGE_SPAN pages) 1419 int lastIndex = getChildCount() - 1 - emptyExtraPages; 1420 if (isLayoutRtl()) { 1421 int temp = firstIndex; 1422 firstIndex = lastIndex; 1423 lastIndex = temp; 1424 } 1425 1426 int firstPageScrollX = getScrollForPage(firstIndex); 1427 int scrollRange = getScrollForPage(lastIndex) - firstPageScrollX; 1428 if (scrollRange == 0) { 1429 return 0; 1430 } else { 1431 // Sometimes the left parameter of the pages is animated during a layout transition; 1432 // this parameter offsets it to keep the wallpaper from animating as well 1433 int adjustedScroll = 1434 getScrollX() - firstPageScrollX - getLayoutTransitionOffsetForPage(0); 1435 float offset = Math.min(1, adjustedScroll / (float) scrollRange); 1436 offset = Math.max(0, offset); 1437 1438 // On RTL devices, push the wallpaper offset to the right if we don't have enough 1439 // pages (ie if numScrollingPages < MIN_PARALLAX_PAGE_SPAN) 1440 if (!mWallpaperIsLiveWallpaper && numScrollingPages < MIN_PARALLAX_PAGE_SPAN 1441 && isLayoutRtl()) { 1442 return offset * (parallaxPageSpan - numScrollingPages + 1) / parallaxPageSpan; 1443 } 1444 return offset * (numScrollingPages - 1) / parallaxPageSpan; 1445 } 1446 } 1447 1448 private int numEmptyScreensToIgnore() { 1449 int numScrollingPages = getChildCount() - numCustomPages(); 1450 if (numScrollingPages >= MIN_PARALLAX_PAGE_SPAN && hasExtraEmptyScreen()) { 1451 return 1; 1452 } else { 1453 return 0; 1454 } 1455 } 1456 1457 private int getNumScreensExcludingEmptyAndCustom() { 1458 int numScrollingPages = getChildCount() - numEmptyScreensToIgnore() - numCustomPages(); 1459 return numScrollingPages; 1460 } 1461 1462 public void syncWithScroll() { 1463 float offset = wallpaperOffsetForCurrentScroll(); 1464 mWallpaperOffset.setFinalX(offset); 1465 updateOffset(true); 1466 } 1467 1468 public float getCurrX() { 1469 return mCurrentOffset; 1470 } 1471 1472 public float getFinalX() { 1473 return mFinalOffset; 1474 } 1475 1476 private void animateToFinal() { 1477 mAnimating = true; 1478 mAnimationStartOffset = mCurrentOffset; 1479 mAnimationStartTime = System.currentTimeMillis(); 1480 } 1481 1482 private void setWallpaperOffsetSteps() { 1483 // Set wallpaper offset steps (1 / (number of screens - 1)) 1484 float xOffset = 1.0f / mNumPagesForWallpaperParallax; 1485 if (xOffset != mLastSetWallpaperOffsetSteps) { 1486 mWallpaperManager.setWallpaperOffsetSteps(xOffset, 1.0f); 1487 mLastSetWallpaperOffsetSteps = xOffset; 1488 } 1489 } 1490 1491 public void setFinalX(float x) { 1492 scheduleUpdate(); 1493 mFinalOffset = Math.max(0f, Math.min(x, 1.0f)); 1494 if (getNumScreensExcludingEmptyAndCustom() != mNumScreens) { 1495 if (mNumScreens > 0) { 1496 // Don't animate if we're going from 0 screens 1497 animateToFinal(); 1498 } 1499 mNumScreens = getNumScreensExcludingEmptyAndCustom(); 1500 } 1501 } 1502 1503 private void scheduleUpdate() { 1504 if (!mWaitingForUpdate) { 1505 mChoreographer.postFrameCallback(this); 1506 mWaitingForUpdate = true; 1507 } 1508 } 1509 1510 public void jumpToFinal() { 1511 mCurrentOffset = mFinalOffset; 1512 } 1513 } 1514 1515 @Override 1516 public void computeScroll() { 1517 super.computeScroll(); 1518 mWallpaperOffset.syncWithScroll(); 1519 } 1520 1521 @Override 1522 public void announceForAccessibility(CharSequence text) { 1523 // Don't announce if apps is on top of us. 1524 if (!mLauncher.isAppsViewVisible()) { 1525 super.announceForAccessibility(text); 1526 } 1527 } 1528 1529 void showOutlines() { 1530 if (!workspaceInModalState() && !mIsSwitchingState) { 1531 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1532 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1533 mChildrenOutlineFadeInAnimation = LauncherAnimUtils.ofFloat(this, "childrenOutlineAlpha", 1.0f); 1534 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 1535 mChildrenOutlineFadeInAnimation.start(); 1536 } 1537 } 1538 1539 void hideOutlines() { 1540 if (!workspaceInModalState() && !mIsSwitchingState) { 1541 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1542 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1543 mChildrenOutlineFadeOutAnimation = LauncherAnimUtils.ofFloat(this, "childrenOutlineAlpha", 0.0f); 1544 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 1545 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 1546 mChildrenOutlineFadeOutAnimation.start(); 1547 } 1548 } 1549 1550 public void showOutlinesTemporarily() { 1551 if (!mIsPageMoving && !isTouchActive()) { 1552 snapToPage(mCurrentPage); 1553 } 1554 } 1555 1556 public void setChildrenOutlineAlpha(float alpha) { 1557 mChildrenOutlineAlpha = alpha; 1558 for (int i = 0; i < getChildCount(); i++) { 1559 CellLayout cl = (CellLayout) getChildAt(i); 1560 cl.setBackgroundAlpha(alpha); 1561 } 1562 } 1563 1564 public float getChildrenOutlineAlpha() { 1565 return mChildrenOutlineAlpha; 1566 } 1567 1568 float backgroundAlphaInterpolator(float r) { 1569 float pivotA = 0.1f; 1570 float pivotB = 0.4f; 1571 if (r < pivotA) { 1572 return 0; 1573 } else if (r > pivotB) { 1574 return 1.0f; 1575 } else { 1576 return (r - pivotA)/(pivotB - pivotA); 1577 } 1578 } 1579 1580 private void updatePageAlphaValues(int screenCenter) { 1581 boolean isInOverscroll = mOverScrollX < 0 || mOverScrollX > mMaxScrollX; 1582 if (mWorkspaceFadeInAdjacentScreens && 1583 !workspaceInModalState() && 1584 !mIsSwitchingState && 1585 !isInOverscroll) { 1586 for (int i = numCustomPages(); i < getChildCount(); i++) { 1587 CellLayout child = (CellLayout) getChildAt(i); 1588 if (child != null) { 1589 float scrollProgress = getScrollProgress(screenCenter, child, i); 1590 float alpha = 1 - Math.abs(scrollProgress); 1591 child.getShortcutsAndWidgets().setAlpha(alpha); 1592 } 1593 } 1594 } 1595 } 1596 1597 private void setChildrenBackgroundAlphaMultipliers(float a) { 1598 for (int i = 0; i < getChildCount(); i++) { 1599 CellLayout child = (CellLayout) getChildAt(i); 1600 child.setBackgroundAlphaMultiplier(a); 1601 } 1602 } 1603 1604 @TargetApi(Build.VERSION_CODES.LOLLIPOP) 1605 @Override 1606 public void enableAccessibleDrag(boolean enable) { 1607 for (int i = 0; i < getChildCount(); i++) { 1608 CellLayout child = (CellLayout) getChildAt(i); 1609 child.enableAccessibleDrag(enable, CellLayout.WORKSPACE_ACCESSIBILITY_DRAG); 1610 } 1611 1612 if (enable) { 1613 // We need to allow our individual children to become click handlers in this case 1614 setOnClickListener(null); 1615 } else { 1616 // Reset our click listener 1617 setOnClickListener(mLauncher); 1618 } 1619 mLauncher.getSearchBar().enableAccessibleDrag(enable); 1620 mLauncher.getHotseat().getLayout() 1621 .enableAccessibleDrag(enable, CellLayout.WORKSPACE_ACCESSIBILITY_DRAG); 1622 } 1623 1624 public boolean hasCustomContent() { 1625 return (mScreenOrder.size() > 0 && mScreenOrder.get(0) == CUSTOM_CONTENT_SCREEN_ID); 1626 } 1627 1628 public int numCustomPages() { 1629 return hasCustomContent() ? 1 : 0; 1630 } 1631 1632 public boolean isOnOrMovingToCustomContent() { 1633 return hasCustomContent() && getNextPage() == 0; 1634 } 1635 1636 private void updateStateForCustomContent(int screenCenter) { 1637 float translationX = 0; 1638 float progress = 0; 1639 if (hasCustomContent()) { 1640 int index = mScreenOrder.indexOf(CUSTOM_CONTENT_SCREEN_ID); 1641 1642 int scrollDelta = getScrollX() - getScrollForPage(index) - 1643 getLayoutTransitionOffsetForPage(index); 1644 float scrollRange = getScrollForPage(index + 1) - getScrollForPage(index); 1645 translationX = scrollRange - scrollDelta; 1646 progress = (scrollRange - scrollDelta) / scrollRange; 1647 1648 if (isLayoutRtl()) { 1649 translationX = Math.min(0, translationX); 1650 } else { 1651 translationX = Math.max(0, translationX); 1652 } 1653 progress = Math.max(0, progress); 1654 } 1655 1656 if (Float.compare(progress, mLastCustomContentScrollProgress) == 0) return; 1657 1658 CellLayout cc = mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID); 1659 if (progress > 0 && cc.getVisibility() != VISIBLE && !workspaceInModalState()) { 1660 cc.setVisibility(VISIBLE); 1661 } 1662 1663 mLastCustomContentScrollProgress = progress; 1664 1665 // We should only update the drag layer background alpha if we are not in all apps or the 1666 // widgets tray 1667 if (mState == State.NORMAL) { 1668 mLauncher.getDragLayer().setBackgroundAlpha(progress * 0.8f); 1669 } 1670 1671 if (mLauncher.getHotseat() != null) { 1672 mLauncher.getHotseat().setTranslationX(translationX); 1673 } 1674 1675 if (getPageIndicator() != null) { 1676 getPageIndicator().setTranslationX(translationX); 1677 } 1678 1679 if (mCustomContentCallbacks != null) { 1680 mCustomContentCallbacks.onScrollProgressChanged(progress); 1681 } 1682 } 1683 1684 @Override 1685 protected OnClickListener getPageIndicatorClickListener() { 1686 AccessibilityManager am = (AccessibilityManager) 1687 getContext().getSystemService(Context.ACCESSIBILITY_SERVICE); 1688 if (!am.isTouchExplorationEnabled()) { 1689 return null; 1690 } 1691 OnClickListener listener = new OnClickListener() { 1692 @Override 1693 public void onClick(View arg0) { 1694 mLauncher.showOverviewMode(true); 1695 } 1696 }; 1697 return listener; 1698 } 1699 1700 @Override 1701 protected void screenScrolled(int screenCenter) { 1702 final boolean isRtl = isLayoutRtl(); 1703 super.screenScrolled(screenCenter); 1704 1705 updatePageAlphaValues(screenCenter); 1706 updateStateForCustomContent(screenCenter); 1707 enableHwLayersOnVisiblePages(); 1708 1709 boolean shouldOverScroll = mOverScrollX < 0 || mOverScrollX > mMaxScrollX; 1710 1711 if (shouldOverScroll) { 1712 int index = 0; 1713 final int lowerIndex = 0; 1714 final int upperIndex = getChildCount() - 1; 1715 1716 final boolean isLeftPage = mOverScrollX < 0; 1717 index = (!isRtl && isLeftPage) || (isRtl && !isLeftPage) ? lowerIndex : upperIndex; 1718 1719 CellLayout cl = (CellLayout) getChildAt(index); 1720 float effect = Math.abs(mOverScrollEffect); 1721 cl.setOverScrollAmount(Math.abs(effect), isLeftPage); 1722 1723 mOverscrollEffectSet = true; 1724 } else { 1725 if (mOverscrollEffectSet && getChildCount() > 0) { 1726 mOverscrollEffectSet = false; 1727 ((CellLayout) getChildAt(0)).setOverScrollAmount(0, false); 1728 ((CellLayout) getChildAt(getChildCount() - 1)).setOverScrollAmount(0, false); 1729 } 1730 } 1731 } 1732 1733 protected void onAttachedToWindow() { 1734 super.onAttachedToWindow(); 1735 mWindowToken = getWindowToken(); 1736 computeScroll(); 1737 mDragController.setWindowToken(mWindowToken); 1738 } 1739 1740 protected void onDetachedFromWindow() { 1741 super.onDetachedFromWindow(); 1742 mWindowToken = null; 1743 } 1744 1745 protected void onResume() { 1746 if (getPageIndicator() != null) { 1747 // In case accessibility state has changed, we need to perform this on every 1748 // attach to window 1749 OnClickListener listener = getPageIndicatorClickListener(); 1750 if (listener != null) { 1751 getPageIndicator().setOnClickListener(listener); 1752 } 1753 } 1754 1755 // Update wallpaper dimensions if they were changed since last onResume 1756 // (we also always set the wallpaper dimensions in the constructor) 1757 if (LauncherAppState.getInstance().hasWallpaperChangedSinceLastCheck()) { 1758 setWallpaperDimension(); 1759 } 1760 mWallpaperIsLiveWallpaper = mWallpaperManager.getWallpaperInfo() != null; 1761 // Force the wallpaper offset steps to be set again, because another app might have changed 1762 // them 1763 mLastSetWallpaperOffsetSteps = 0f; 1764 } 1765 1766 @Override 1767 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1768 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1769 mWallpaperOffset.syncWithScroll(); 1770 mWallpaperOffset.jumpToFinal(); 1771 } 1772 super.onLayout(changed, left, top, right, bottom); 1773 } 1774 1775 @Override 1776 protected void onDraw(Canvas canvas) { 1777 super.onDraw(canvas); 1778 1779 // Call back to LauncherModel to finish binding after the first draw 1780 post(mBindPages); 1781 } 1782 1783 @Override 1784 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1785 if (!mLauncher.isAppsViewVisible()) { 1786 final Folder openFolder = getOpenFolder(); 1787 if (openFolder != null) { 1788 return openFolder.requestFocus(direction, previouslyFocusedRect); 1789 } else { 1790 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1791 } 1792 } 1793 return false; 1794 } 1795 1796 @Override 1797 public int getDescendantFocusability() { 1798 if (workspaceInModalState()) { 1799 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1800 } 1801 return super.getDescendantFocusability(); 1802 } 1803 1804 @Override 1805 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1806 if (!mLauncher.isAppsViewVisible()) { 1807 final Folder openFolder = getOpenFolder(); 1808 if (openFolder != null) { 1809 openFolder.addFocusables(views, direction); 1810 } else { 1811 super.addFocusables(views, direction, focusableMode); 1812 } 1813 } 1814 } 1815 1816 public boolean workspaceInModalState() { 1817 return mState != State.NORMAL; 1818 } 1819 1820 void enableChildrenCache(int fromPage, int toPage) { 1821 if (fromPage > toPage) { 1822 final int temp = fromPage; 1823 fromPage = toPage; 1824 toPage = temp; 1825 } 1826 1827 final int screenCount = getChildCount(); 1828 1829 fromPage = Math.max(fromPage, 0); 1830 toPage = Math.min(toPage, screenCount - 1); 1831 1832 for (int i = fromPage; i <= toPage; i++) { 1833 final CellLayout layout = (CellLayout) getChildAt(i); 1834 layout.setChildrenDrawnWithCacheEnabled(true); 1835 layout.setChildrenDrawingCacheEnabled(true); 1836 } 1837 } 1838 1839 void clearChildrenCache() { 1840 final int screenCount = getChildCount(); 1841 for (int i = 0; i < screenCount; i++) { 1842 final CellLayout layout = (CellLayout) getChildAt(i); 1843 layout.setChildrenDrawnWithCacheEnabled(false); 1844 // In software mode, we don't want the items to continue to be drawn into bitmaps 1845 if (!isHardwareAccelerated()) { 1846 layout.setChildrenDrawingCacheEnabled(false); 1847 } 1848 } 1849 } 1850 1851 @Thunk void updateChildrenLayersEnabled(boolean force) { 1852 boolean small = mState == State.OVERVIEW || mIsSwitchingState; 1853 boolean enableChildrenLayers = force || small || mAnimatingViewIntoPlace || isPageMoving(); 1854 1855 if (enableChildrenLayers != mChildrenLayersEnabled) { 1856 mChildrenLayersEnabled = enableChildrenLayers; 1857 if (mChildrenLayersEnabled) { 1858 enableHwLayersOnVisiblePages(); 1859 } else { 1860 for (int i = 0; i < getPageCount(); i++) { 1861 final CellLayout cl = (CellLayout) getChildAt(i); 1862 cl.enableHardwareLayer(false); 1863 } 1864 } 1865 } 1866 } 1867 1868 private void enableHwLayersOnVisiblePages() { 1869 if (mChildrenLayersEnabled) { 1870 final int screenCount = getChildCount(); 1871 getVisiblePages(mTempVisiblePagesRange); 1872 int leftScreen = mTempVisiblePagesRange[0]; 1873 int rightScreen = mTempVisiblePagesRange[1]; 1874 if (leftScreen == rightScreen) { 1875 // make sure we're caching at least two pages always 1876 if (rightScreen < screenCount - 1) { 1877 rightScreen++; 1878 } else if (leftScreen > 0) { 1879 leftScreen--; 1880 } 1881 } 1882 1883 final CellLayout customScreen = mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID); 1884 for (int i = 0; i < screenCount; i++) { 1885 final CellLayout layout = (CellLayout) getPageAt(i); 1886 1887 // enable layers between left and right screen inclusive, except for the 1888 // customScreen, which may animate its content during transitions. 1889 boolean enableLayer = layout != customScreen && 1890 leftScreen <= i && i <= rightScreen && shouldDrawChild(layout); 1891 layout.enableHardwareLayer(enableLayer); 1892 } 1893 } 1894 } 1895 1896 public void buildPageHardwareLayers() { 1897 // force layers to be enabled just for the call to buildLayer 1898 updateChildrenLayersEnabled(true); 1899 if (getWindowToken() != null) { 1900 final int childCount = getChildCount(); 1901 for (int i = 0; i < childCount; i++) { 1902 CellLayout cl = (CellLayout) getChildAt(i); 1903 cl.buildHardwareLayer(); 1904 } 1905 } 1906 updateChildrenLayersEnabled(false); 1907 } 1908 1909 protected void onWallpaperTap(MotionEvent ev) { 1910 final int[] position = mTempCell; 1911 getLocationOnScreen(position); 1912 1913 int pointerIndex = ev.getActionIndex(); 1914 position[0] += (int) ev.getX(pointerIndex); 1915 position[1] += (int) ev.getY(pointerIndex); 1916 1917 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1918 ev.getAction() == MotionEvent.ACTION_UP 1919 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1920 position[0], position[1], 0, null); 1921 } 1922 1923 /* 1924 * 1925 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1926 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1927 * 1928 * These methods mark the appropriate pages as accepting drops (which alters their visual 1929 * appearance). 1930 * 1931 */ 1932 private static Rect getDrawableBounds(Drawable d) { 1933 Rect bounds = new Rect(); 1934 d.copyBounds(bounds); 1935 if (bounds.width() == 0 || bounds.height() == 0) { 1936 bounds.set(0, 0, d.getIntrinsicWidth(), d.getIntrinsicHeight()); 1937 } else { 1938 bounds.offsetTo(0, 0); 1939 } 1940 if (d instanceof PreloadIconDrawable) { 1941 int inset = -((PreloadIconDrawable) d).getOutset(); 1942 bounds.inset(inset, inset); 1943 } 1944 return bounds; 1945 } 1946 1947 public void onExternalDragStartedWithItem(View v) { 1948 // Compose a drag bitmap with the view scaled to the icon size 1949 LauncherAppState app = LauncherAppState.getInstance(); 1950 DeviceProfile grid = app.getDynamicGrid().getDeviceProfile(); 1951 int iconSize = grid.iconSizePx; 1952 int bmpWidth = v.getMeasuredWidth(); 1953 int bmpHeight = v.getMeasuredHeight(); 1954 1955 // If this is a text view, use its drawable instead 1956 if (v instanceof TextView) { 1957 Drawable d = getTextViewIcon((TextView) v); 1958 Rect bounds = getDrawableBounds(d); 1959 bmpWidth = bounds.width(); 1960 bmpHeight = bounds.height(); 1961 } 1962 1963 // Compose the bitmap to create the icon from 1964 Bitmap b = Bitmap.createBitmap(bmpWidth, bmpHeight, 1965 Bitmap.Config.ARGB_8888); 1966 mCanvas.setBitmap(b); 1967 drawDragView(v, mCanvas, 0); 1968 mCanvas.setBitmap(null); 1969 1970 // The outline is used to visualize where the item will land if dropped 1971 mDragOutline = createDragOutline(b, DRAG_BITMAP_PADDING, iconSize, iconSize, true); 1972 } 1973 1974 public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, boolean clipAlpha) { 1975 int[] size = estimateItemSize(info, false); 1976 1977 // The outline is used to visualize where the item will land if dropped 1978 mDragOutline = createDragOutline(b, DRAG_BITMAP_PADDING, size[0], size[1], clipAlpha); 1979 } 1980 1981 public void exitWidgetResizeMode() { 1982 DragLayer dragLayer = mLauncher.getDragLayer(); 1983 dragLayer.clearAllResizeFrames(); 1984 } 1985 1986 @Override 1987 protected void getFreeScrollPageRange(int[] range) { 1988 getOverviewModePages(range); 1989 } 1990 1991 private void getOverviewModePages(int[] range) { 1992 int start = numCustomPages(); 1993 int end = getChildCount() - 1; 1994 1995 range[0] = Math.max(0, Math.min(start, getChildCount() - 1)); 1996 range[1] = Math.max(0, end); 1997 } 1998 1999 protected void onStartReordering() { 2000 super.onStartReordering(); 2001 showOutlines(); 2002 // Reordering handles its own animations, disable the automatic ones. 2003 disableLayoutTransitions(); 2004 } 2005 2006 protected void onEndReordering() { 2007 super.onEndReordering(); 2008 2009 if (mLauncher.isWorkspaceLoading()) { 2010 // Invalid and dangerous operation if workspace is loading 2011 return; 2012 } 2013 2014 hideOutlines(); 2015 mScreenOrder.clear(); 2016 int count = getChildCount(); 2017 for (int i = 0; i < count; i++) { 2018 CellLayout cl = ((CellLayout) getChildAt(i)); 2019 mScreenOrder.add(getIdForScreen(cl)); 2020 } 2021 2022 mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); 2023 2024 // Re-enable auto layout transitions for page deletion. 2025 enableLayoutTransitions(); 2026 } 2027 2028 public boolean isInOverviewMode() { 2029 return mState == State.OVERVIEW; 2030 } 2031 2032 int getOverviewModeTranslationY() { 2033 LauncherAppState app = LauncherAppState.getInstance(); 2034 DeviceProfile grid = app.getDynamicGrid().getDeviceProfile(); 2035 Rect overviewBar = grid.getOverviewModeButtonBarRect(); 2036 2037 int availableHeight = getViewportHeight(); 2038 int scaledHeight = (int) (mOverviewModeShrinkFactor * getNormalChildHeight()); 2039 int offsetFromTopEdge = (availableHeight - scaledHeight) / 2; 2040 int offsetToCenterInOverview = (availableHeight - mInsets.top - overviewBar.height() 2041 - scaledHeight) / 2; 2042 2043 return -offsetFromTopEdge + mInsets.top + offsetToCenterInOverview; 2044 } 2045 2046 /** 2047 * Sets the current workspace {@link State}, returning an animation transitioning the workspace 2048 * to that new state. 2049 */ 2050 public Animator setStateWithAnimation(State toState, int toPage, boolean animated, 2051 HashMap<View, Integer> layerViews) { 2052 // Create the animation to the new state 2053 Animator workspaceAnim = mStateTransitionAnimation.getAnimationToState(getState(), 2054 toState, toPage, animated, layerViews); 2055 2056 // Update the current state 2057 mState = toState; 2058 updateAccessibilityFlags(); 2059 2060 return workspaceAnim; 2061 } 2062 2063 State getState() { 2064 return mState; 2065 } 2066 2067 private void updateAccessibilityFlags() { 2068 int accessible = mState == State.NORMAL ? 2069 IMPORTANT_FOR_ACCESSIBILITY_NO : 2070 IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS; 2071 setImportantForAccessibility(accessible); 2072 } 2073 2074 @Override 2075 public void onLauncherTransitionPrepare(Launcher l, boolean animated, boolean toWorkspace) { 2076 mIsSwitchingState = true; 2077 2078 // Invalidate here to ensure that the pages are rendered during the state change transition. 2079 invalidate(); 2080 2081 updateChildrenLayersEnabled(false); 2082 hideCustomContentIfNecessary(); 2083 } 2084 2085 @Override 2086 public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) { 2087 } 2088 2089 @Override 2090 public void onLauncherTransitionStep(Launcher l, float t) { 2091 mTransitionProgress = t; 2092 } 2093 2094 @Override 2095 public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) { 2096 mIsSwitchingState = false; 2097 updateChildrenLayersEnabled(false); 2098 showCustomContentIfNecessary(); 2099 } 2100 2101 void updateCustomContentVisibility() { 2102 int visibility = mState == Workspace.State.NORMAL ? VISIBLE : INVISIBLE; 2103 if (hasCustomContent()) { 2104 mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID).setVisibility(visibility); 2105 } 2106 } 2107 2108 void showCustomContentIfNecessary() { 2109 boolean show = mState == Workspace.State.NORMAL; 2110 if (show && hasCustomContent()) { 2111 mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID).setVisibility(VISIBLE); 2112 } 2113 } 2114 2115 void hideCustomContentIfNecessary() { 2116 boolean hide = mState != Workspace.State.NORMAL; 2117 if (hide && hasCustomContent()) { 2118 disableLayoutTransitions(); 2119 mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID).setVisibility(INVISIBLE); 2120 enableLayoutTransitions(); 2121 } 2122 } 2123 2124 @Override 2125 public View getContent() { 2126 return this; 2127 } 2128 2129 /** 2130 * Returns the drawable for the given text view. 2131 */ 2132 public static Drawable getTextViewIcon(TextView tv) { 2133 final Drawable[] drawables = tv.getCompoundDrawables(); 2134 for (int i = 0; i < drawables.length; i++) { 2135 if (drawables[i] != null) { 2136 return drawables[i]; 2137 } 2138 } 2139 return null; 2140 } 2141 2142 /** 2143 * Draw the View v into the given Canvas. 2144 * 2145 * @param v the view to draw 2146 * @param destCanvas the canvas to draw on 2147 * @param padding the horizontal and vertical padding to use when drawing 2148 */ 2149 private static void drawDragView(View v, Canvas destCanvas, int padding) { 2150 final Rect clipRect = sTempRect; 2151 v.getDrawingRect(clipRect); 2152 2153 boolean textVisible = false; 2154 2155 destCanvas.save(); 2156 if (v instanceof TextView) { 2157 Drawable d = getTextViewIcon((TextView) v); 2158 Rect bounds = getDrawableBounds(d); 2159 clipRect.set(0, 0, bounds.width() + padding, bounds.height() + padding); 2160 destCanvas.translate(padding / 2 - bounds.left, padding / 2 - bounds.top); 2161 d.draw(destCanvas); 2162 } else { 2163 if (v instanceof FolderIcon) { 2164 // For FolderIcons the text can bleed into the icon area, and so we need to 2165 // hide the text completely (which can't be achieved by clipping). 2166 if (((FolderIcon) v).getTextVisible()) { 2167 ((FolderIcon) v).setTextVisible(false); 2168 textVisible = true; 2169 } 2170 } 2171 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 2172 destCanvas.clipRect(clipRect, Op.REPLACE); 2173 v.draw(destCanvas); 2174 2175 // Restore text visibility of FolderIcon if necessary 2176 if (textVisible) { 2177 ((FolderIcon) v).setTextVisible(true); 2178 } 2179 } 2180 destCanvas.restore(); 2181 } 2182 2183 /** 2184 * Returns a new bitmap to show when the given View is being dragged around. 2185 * Responsibility for the bitmap is transferred to the caller. 2186 * @param expectedPadding padding to add to the drag view. If a different padding was used 2187 * its value will be changed 2188 */ 2189 public Bitmap createDragBitmap(View v, AtomicInteger expectedPadding) { 2190 Bitmap b; 2191 2192 int padding = expectedPadding.get(); 2193 if (v instanceof TextView) { 2194 Drawable d = getTextViewIcon((TextView) v); 2195 Rect bounds = getDrawableBounds(d); 2196 b = Bitmap.createBitmap(bounds.width() + padding, 2197 bounds.height() + padding, Bitmap.Config.ARGB_8888); 2198 expectedPadding.set(padding - bounds.left - bounds.top); 2199 } else { 2200 b = Bitmap.createBitmap( 2201 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 2202 } 2203 2204 mCanvas.setBitmap(b); 2205 drawDragView(v, mCanvas, padding); 2206 mCanvas.setBitmap(null); 2207 2208 return b; 2209 } 2210 2211 /** 2212 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2213 * Responsibility for the bitmap is transferred to the caller. 2214 */ 2215 private Bitmap createDragOutline(View v, int padding) { 2216 final int outlineColor = getResources().getColor(R.color.outline_color); 2217 final Bitmap b = Bitmap.createBitmap( 2218 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 2219 2220 mCanvas.setBitmap(b); 2221 drawDragView(v, mCanvas, padding); 2222 mOutlineHelper.applyExpensiveOutlineWithBlur(b, mCanvas, outlineColor, outlineColor); 2223 mCanvas.setBitmap(null); 2224 return b; 2225 } 2226 2227 /** 2228 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2229 * Responsibility for the bitmap is transferred to the caller. 2230 */ 2231 private Bitmap createDragOutline(Bitmap orig, int padding, int w, int h, 2232 boolean clipAlpha) { 2233 final int outlineColor = getResources().getColor(R.color.outline_color); 2234 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 2235 mCanvas.setBitmap(b); 2236 2237 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 2238 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 2239 (h - padding) / (float) orig.getHeight()); 2240 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 2241 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 2242 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 2243 2244 // center the image 2245 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 2246 2247 mCanvas.drawBitmap(orig, src, dst, null); 2248 mOutlineHelper.applyExpensiveOutlineWithBlur(b, mCanvas, outlineColor, outlineColor, 2249 clipAlpha); 2250 mCanvas.setBitmap(null); 2251 2252 return b; 2253 } 2254 2255 public void startDrag(CellLayout.CellInfo cellInfo) { 2256 startDrag(cellInfo, false); 2257 } 2258 2259 @Override 2260 public void startDrag(CellLayout.CellInfo cellInfo, boolean accessible) { 2261 View child = cellInfo.cell; 2262 2263 // Make sure the drag was started by a long press as opposed to a long click. 2264 if (!child.isInTouchMode()) { 2265 return; 2266 } 2267 2268 mDragInfo = cellInfo; 2269 child.setVisibility(INVISIBLE); 2270 CellLayout layout = (CellLayout) child.getParent().getParent(); 2271 layout.prepareChildForDrag(child); 2272 2273 beginDragShared(child, this, accessible); 2274 } 2275 2276 public void beginDragShared(View child, DragSource source, boolean accessible) { 2277 beginDragShared(child, new Point(), source, accessible); 2278 } 2279 2280 public void beginDragShared(View child, Point relativeTouchPos, DragSource source, 2281 boolean accessible) { 2282 child.clearFocus(); 2283 child.setPressed(false); 2284 2285 // The outline is used to visualize where the item will land if dropped 2286 mDragOutline = createDragOutline(child, DRAG_BITMAP_PADDING); 2287 2288 mLauncher.onDragStarted(child); 2289 // The drag bitmap follows the touch point around on the screen 2290 AtomicInteger padding = new AtomicInteger(DRAG_BITMAP_PADDING); 2291 final Bitmap b = createDragBitmap(child, padding); 2292 2293 final int bmpWidth = b.getWidth(); 2294 final int bmpHeight = b.getHeight(); 2295 2296 float scale = mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 2297 int dragLayerX = Math.round(mTempXY[0] - (bmpWidth - scale * child.getWidth()) / 2); 2298 int dragLayerY = Math.round(mTempXY[1] - (bmpHeight - scale * bmpHeight) / 2 2299 - padding.get() / 2); 2300 2301 LauncherAppState app = LauncherAppState.getInstance(); 2302 DeviceProfile grid = app.getDynamicGrid().getDeviceProfile(); 2303 Point dragVisualizeOffset = null; 2304 Rect dragRect = null; 2305 if (child instanceof BubbleTextView) { 2306 BubbleTextView icon = (BubbleTextView) child; 2307 int iconSize = grid.iconSizePx; 2308 int top = child.getPaddingTop(); 2309 int left = (bmpWidth - iconSize) / 2; 2310 int right = left + iconSize; 2311 int bottom = top + iconSize; 2312 if (icon.isLayoutHorizontal()) { 2313 // If the layout is horizontal, then if we are just picking up the icon, then just 2314 // use the child position since the icon is top-left aligned. Otherwise, offset 2315 // the drag layer position horizontally so that the icon is under the current 2316 // touch position. 2317 if (icon.getIcon().getBounds().contains(relativeTouchPos.x, relativeTouchPos.y)) { 2318 dragLayerX = Math.round(mTempXY[0]); 2319 } else { 2320 dragLayerX = Math.round(mTempXY[0] + relativeTouchPos.x - (bmpWidth / 2)); 2321 } 2322 } 2323 dragLayerY += top; 2324 // Note: The drag region is used to calculate drag layer offsets, but the 2325 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 2326 dragVisualizeOffset = new Point(-padding.get() / 2, padding.get() / 2); 2327 dragRect = new Rect(left, top, right, bottom); 2328 } else if (child instanceof FolderIcon) { 2329 int previewSize = grid.folderIconSizePx; 2330 dragRect = new Rect(0, child.getPaddingTop(), child.getWidth(), previewSize); 2331 } 2332 2333 // Clear the pressed state if necessary 2334 if (child instanceof BubbleTextView) { 2335 BubbleTextView icon = (BubbleTextView) child; 2336 icon.clearPressedBackground(); 2337 } 2338 2339 if (child.getTag() == null || !(child.getTag() instanceof ItemInfo)) { 2340 String msg = "Drag started with a view that has no tag set. This " 2341 + "will cause a crash (issue 11627249) down the line. " 2342 + "View: " + child + " tag: " + child.getTag(); 2343 throw new IllegalStateException(msg); 2344 } 2345 2346 DragView dv = mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 2347 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect, scale, accessible); 2348 dv.setIntrinsicIconScaleFactor(source.getIntrinsicIconScaleFactor()); 2349 2350 if (child.getParent() instanceof ShortcutAndWidgetContainer) { 2351 mDragSourceInternal = (ShortcutAndWidgetContainer) child.getParent(); 2352 } 2353 2354 b.recycle(); 2355 } 2356 2357 public void beginExternalDragShared(View child, DragSource source) { 2358 LauncherAppState app = LauncherAppState.getInstance(); 2359 DeviceProfile grid = app.getDynamicGrid().getDeviceProfile(); 2360 int iconSize = grid.iconSizePx; 2361 2362 // Notify launcher of drag start 2363 mLauncher.onDragStarted(child); 2364 2365 // Compose a new drag bitmap that is of the icon size 2366 AtomicInteger padding = new AtomicInteger(DRAG_BITMAP_PADDING); 2367 final Bitmap tmpB = createDragBitmap(child, padding); 2368 Bitmap b = Bitmap.createBitmap(iconSize, iconSize, Bitmap.Config.ARGB_8888); 2369 Paint p = new Paint(); 2370 p.setFilterBitmap(true); 2371 mCanvas.setBitmap(b); 2372 mCanvas.drawBitmap(tmpB, new Rect(0, 0, tmpB.getWidth(), tmpB.getHeight()), 2373 new Rect(0, 0, iconSize, iconSize), p); 2374 mCanvas.setBitmap(null); 2375 2376 // Find the child's location on the screen 2377 int bmpWidth = tmpB.getWidth(); 2378 float iconScale = (float) bmpWidth / iconSize; 2379 float scale = mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY) * iconScale; 2380 int dragLayerX = Math.round(mTempXY[0] - (bmpWidth - scale * child.getWidth()) / 2); 2381 int dragLayerY = Math.round(mTempXY[1]); 2382 2383 // Note: The drag region is used to calculate drag layer offsets, but the 2384 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 2385 Point dragVisualizeOffset = new Point(-padding.get() / 2, padding.get() / 2); 2386 Rect dragRect = new Rect(0, 0, iconSize, iconSize); 2387 2388 if (child.getTag() == null || !(child.getTag() instanceof ItemInfo)) { 2389 String msg = "Drag started with a view that has no tag set. This " 2390 + "will cause a crash (issue 11627249) down the line. " 2391 + "View: " + child + " tag: " + child.getTag(); 2392 throw new IllegalStateException(msg); 2393 } 2394 2395 // Start the drag 2396 DragView dv = mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 2397 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect, scale, false); 2398 dv.setIntrinsicIconScaleFactor(source.getIntrinsicIconScaleFactor()); 2399 2400 // Recycle temporary bitmaps 2401 tmpB.recycle(); 2402 } 2403 2404 public boolean transitionStateShouldAllowDrop() { 2405 return ((!isSwitchingState() || mTransitionProgress > 0.5f) && 2406 (mState == State.NORMAL || mState == State.SPRING_LOADED)); 2407 } 2408 2409 /** 2410 * {@inheritDoc} 2411 */ 2412 public boolean acceptDrop(DragObject d) { 2413 // If it's an external drop (e.g. from All Apps), check if it should be accepted 2414 CellLayout dropTargetLayout = mDropToLayout; 2415 if (d.dragSource != this) { 2416 // Don't accept the drop if we're not over a screen at time of drop 2417 if (dropTargetLayout == null) { 2418 return false; 2419 } 2420 if (!transitionStateShouldAllowDrop()) return false; 2421 2422 mDragViewVisualCenter = d.getVisualCenter(mDragViewVisualCenter); 2423 2424 // We want the point to be mapped to the dragTarget. 2425 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 2426 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2427 } else { 2428 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 2429 } 2430 2431 int spanX = 1; 2432 int spanY = 1; 2433 if (mDragInfo != null) { 2434 final CellLayout.CellInfo dragCellInfo = mDragInfo; 2435 spanX = dragCellInfo.spanX; 2436 spanY = dragCellInfo.spanY; 2437 } else { 2438 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 2439 spanX = dragInfo.spanX; 2440 spanY = dragInfo.spanY; 2441 } 2442 2443 int minSpanX = spanX; 2444 int minSpanY = spanY; 2445 if (d.dragInfo instanceof PendingAddWidgetInfo) { 2446 minSpanX = ((PendingAddWidgetInfo) d.dragInfo).minSpanX; 2447 minSpanY = ((PendingAddWidgetInfo) d.dragInfo).minSpanY; 2448 } 2449 2450 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2451 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, dropTargetLayout, 2452 mTargetCell); 2453 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2454 mDragViewVisualCenter[1], mTargetCell); 2455 if (mCreateUserFolderOnDrop && willCreateUserFolder((ItemInfo) d.dragInfo, 2456 dropTargetLayout, mTargetCell, distance, true)) { 2457 return true; 2458 } 2459 2460 if (mAddToExistingFolderOnDrop && willAddToExistingUserFolder((ItemInfo) d.dragInfo, 2461 dropTargetLayout, mTargetCell, distance)) { 2462 return true; 2463 } 2464 2465 int[] resultSpan = new int[2]; 2466 mTargetCell = dropTargetLayout.performReorder((int) mDragViewVisualCenter[0], 2467 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2468 null, mTargetCell, resultSpan, CellLayout.MODE_ACCEPT_DROP); 2469 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2470 2471 // Don't accept the drop if there's no room for the item 2472 if (!foundCell) { 2473 // Don't show the message if we are dropping on the AllApps button and the hotseat 2474 // is full 2475 boolean isHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2476 if (mTargetCell != null && isHotseat) { 2477 Hotseat hotseat = mLauncher.getHotseat(); 2478 if (hotseat.isAllAppsButtonRank( 2479 hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { 2480 return false; 2481 } 2482 } 2483 2484 mLauncher.showOutOfSpaceMessage(isHotseat); 2485 return false; 2486 } 2487 } 2488 2489 long screenId = getIdForScreen(dropTargetLayout); 2490 if (screenId == EXTRA_EMPTY_SCREEN_ID) { 2491 commitExtraEmptyScreen(); 2492 } 2493 2494 return true; 2495 } 2496 2497 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, float 2498 distance, boolean considerTimeout) { 2499 if (distance > mMaxDistanceForFolderCreation) return false; 2500 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2501 2502 if (dropOverView != null) { 2503 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2504 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2505 return false; 2506 } 2507 } 2508 2509 boolean hasntMoved = false; 2510 if (mDragInfo != null) { 2511 hasntMoved = dropOverView == mDragInfo.cell; 2512 } 2513 2514 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2515 return false; 2516 } 2517 2518 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2519 boolean willBecomeShortcut = 2520 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2521 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2522 2523 return (aboveShortcut && willBecomeShortcut); 2524 } 2525 2526 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell, 2527 float distance) { 2528 if (distance > mMaxDistanceForFolderCreation) return false; 2529 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2530 2531 if (dropOverView != null) { 2532 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2533 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2534 return false; 2535 } 2536 } 2537 2538 if (dropOverView instanceof FolderIcon) { 2539 FolderIcon fi = (FolderIcon) dropOverView; 2540 if (fi.acceptDrop(dragInfo)) { 2541 return true; 2542 } 2543 } 2544 return false; 2545 } 2546 2547 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2548 int[] targetCell, float distance, boolean external, DragView dragView, 2549 Runnable postAnimationRunnable) { 2550 if (distance > mMaxDistanceForFolderCreation) return false; 2551 View v = target.getChildAt(targetCell[0], targetCell[1]); 2552 2553 boolean hasntMoved = false; 2554 if (mDragInfo != null) { 2555 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2556 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2557 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2558 } 2559 2560 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2561 mCreateUserFolderOnDrop = false; 2562 final long screenId = (targetCell == null) ? mDragInfo.screenId : getIdForScreen(target); 2563 2564 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2565 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2566 2567 if (aboveShortcut && willBecomeShortcut) { 2568 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2569 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2570 // if the drag started here, we need to remove it from the workspace 2571 if (!external) { 2572 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2573 } 2574 2575 Rect folderLocation = new Rect(); 2576 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2577 target.removeView(v); 2578 2579 FolderIcon fi = 2580 mLauncher.addFolder(target, container, screenId, targetCell[0], targetCell[1]); 2581 destInfo.cellX = -1; 2582 destInfo.cellY = -1; 2583 sourceInfo.cellX = -1; 2584 sourceInfo.cellY = -1; 2585 2586 // If the dragView is null, we can't animate 2587 boolean animate = dragView != null; 2588 if (animate) { 2589 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2590 postAnimationRunnable); 2591 } else { 2592 fi.addItem(destInfo); 2593 fi.addItem(sourceInfo); 2594 } 2595 return true; 2596 } 2597 return false; 2598 } 2599 2600 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2601 float distance, DragObject d, boolean external) { 2602 if (distance > mMaxDistanceForFolderCreation) return false; 2603 2604 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2605 if (!mAddToExistingFolderOnDrop) return false; 2606 mAddToExistingFolderOnDrop = false; 2607 2608 if (dropOverView instanceof FolderIcon) { 2609 FolderIcon fi = (FolderIcon) dropOverView; 2610 if (fi.acceptDrop(d.dragInfo)) { 2611 fi.onDrop(d); 2612 2613 // if the drag started here, we need to remove it from the workspace 2614 if (!external) { 2615 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2616 } 2617 return true; 2618 } 2619 } 2620 return false; 2621 } 2622 2623 @Override 2624 public void prepareAccessibilityDrop() { } 2625 2626 public void onDrop(final DragObject d) { 2627 mDragViewVisualCenter = d.getVisualCenter(mDragViewVisualCenter); 2628 CellLayout dropTargetLayout = mDropToLayout; 2629 2630 // We want the point to be mapped to the dragTarget. 2631 if (dropTargetLayout != null) { 2632 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 2633 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2634 } else { 2635 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 2636 } 2637 } 2638 2639 int snapScreen = WorkspaceStateTransitionAnimation.SCROLL_TO_CURRENT_PAGE; 2640 boolean resizeOnDrop = false; 2641 if (d.dragSource != this) { 2642 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2643 (int) mDragViewVisualCenter[1] }; 2644 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2645 } else if (mDragInfo != null) { 2646 final View cell = mDragInfo.cell; 2647 2648 Runnable resizeRunnable = null; 2649 if (dropTargetLayout != null && !d.cancelled) { 2650 // Move internally 2651 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2652 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2653 long container = hasMovedIntoHotseat ? 2654 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2655 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2656 long screenId = (mTargetCell[0] < 0) ? 2657 mDragInfo.screenId : getIdForScreen(dropTargetLayout); 2658 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2659 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2660 // First we find the cell nearest to point at which the item is 2661 // dropped, without any consideration to whether there is an item there. 2662 2663 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2664 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2665 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2666 mDragViewVisualCenter[1], mTargetCell); 2667 2668 // If the item being dropped is a shortcut and the nearest drop 2669 // cell also contains a shortcut, then create a folder with the two shortcuts. 2670 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2671 dropTargetLayout, mTargetCell, distance, false, d.dragView, null)) { 2672 return; 2673 } 2674 2675 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, 2676 distance, d, false)) { 2677 return; 2678 } 2679 2680 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2681 // we need to find the nearest cell location that is vacant 2682 ItemInfo item = (ItemInfo) d.dragInfo; 2683 int minSpanX = item.spanX; 2684 int minSpanY = item.spanY; 2685 if (item.minSpanX > 0 && item.minSpanY > 0) { 2686 minSpanX = item.minSpanX; 2687 minSpanY = item.minSpanY; 2688 } 2689 2690 int[] resultSpan = new int[2]; 2691 mTargetCell = dropTargetLayout.performReorder((int) mDragViewVisualCenter[0], 2692 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, cell, 2693 mTargetCell, resultSpan, CellLayout.MODE_ON_DROP); 2694 2695 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2696 2697 // if the widget resizes on drop 2698 if (foundCell && (cell instanceof AppWidgetHostView) && 2699 (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY)) { 2700 resizeOnDrop = true; 2701 item.spanX = resultSpan[0]; 2702 item.spanY = resultSpan[1]; 2703 AppWidgetHostView awhv = (AppWidgetHostView) cell; 2704 AppWidgetResizeFrame.updateWidgetSizeRanges(awhv, mLauncher, resultSpan[0], 2705 resultSpan[1]); 2706 } 2707 2708 if (getScreenIdForPageIndex(mCurrentPage) != screenId && !hasMovedIntoHotseat) { 2709 snapScreen = getPageIndexForScreenId(screenId); 2710 snapToPage(snapScreen); 2711 } 2712 2713 if (foundCell) { 2714 final ItemInfo info = (ItemInfo) cell.getTag(); 2715 if (hasMovedLayouts) { 2716 // Reparent the view 2717 CellLayout parentCell = getParentCellLayoutForView(cell); 2718 if (parentCell != null) { 2719 parentCell.removeView(cell); 2720 } else if (LauncherAppState.isDogfoodBuild()) { 2721 throw new NullPointerException("mDragInfo.cell has null parent"); 2722 } 2723 addInScreen(cell, container, screenId, mTargetCell[0], mTargetCell[1], 2724 info.spanX, info.spanY); 2725 } 2726 2727 // update the item's position after drop 2728 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2729 lp.cellX = lp.tmpCellX = mTargetCell[0]; 2730 lp.cellY = lp.tmpCellY = mTargetCell[1]; 2731 lp.cellHSpan = item.spanX; 2732 lp.cellVSpan = item.spanY; 2733 lp.isLockedToGrid = true; 2734 2735 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2736 cell instanceof LauncherAppWidgetHostView) { 2737 final CellLayout cellLayout = dropTargetLayout; 2738 // We post this call so that the widget has a chance to be placed 2739 // in its final location 2740 2741 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2742 AppWidgetProviderInfo pInfo = hostView.getAppWidgetInfo(); 2743 if (pInfo != null && pInfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE 2744 && !d.accessibleDrag) { 2745 final Runnable addResizeFrame = new Runnable() { 2746 public void run() { 2747 DragLayer dragLayer = mLauncher.getDragLayer(); 2748 dragLayer.addResizeFrame(info, hostView, cellLayout); 2749 } 2750 }; 2751 resizeRunnable = (new Runnable() { 2752 public void run() { 2753 if (!isPageMoving()) { 2754 addResizeFrame.run(); 2755 } else { 2756 mDelayedResizeRunnable = addResizeFrame; 2757 } 2758 } 2759 }); 2760 } 2761 } 2762 2763 LauncherModel.modifyItemInDatabase(mLauncher, info, container, screenId, lp.cellX, 2764 lp.cellY, item.spanX, item.spanY); 2765 } else { 2766 // If we can't find a drop location, we return the item to its original position 2767 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2768 mTargetCell[0] = lp.cellX; 2769 mTargetCell[1] = lp.cellY; 2770 CellLayout layout = (CellLayout) cell.getParent().getParent(); 2771 layout.markCellsAsOccupiedForView(cell); 2772 } 2773 } 2774 2775 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2776 final Runnable finalResizeRunnable = resizeRunnable; 2777 // Prepare it to be animated into its new position 2778 // This must be called after the view has been re-parented 2779 final Runnable onCompleteRunnable = new Runnable() { 2780 @Override 2781 public void run() { 2782 mAnimatingViewIntoPlace = false; 2783 updateChildrenLayersEnabled(false); 2784 if (finalResizeRunnable != null) { 2785 finalResizeRunnable.run(); 2786 } 2787 } 2788 }; 2789 mAnimatingViewIntoPlace = true; 2790 if (d.dragView.hasDrawn()) { 2791 final ItemInfo info = (ItemInfo) cell.getTag(); 2792 boolean isWidget = info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET 2793 || info.itemType == LauncherSettings.Favorites.ITEM_TYPE_CUSTOM_APPWIDGET; 2794 if (isWidget) { 2795 int animationType = resizeOnDrop ? ANIMATE_INTO_POSITION_AND_RESIZE : 2796 ANIMATE_INTO_POSITION_AND_DISAPPEAR; 2797 animateWidgetDrop(info, parent, d.dragView, 2798 onCompleteRunnable, animationType, cell, false); 2799 } else { 2800 int duration = snapScreen < 0 ? 2801 WorkspaceStateTransitionAnimation.SCROLL_TO_CURRENT_PAGE : 2802 ADJACENT_SCREEN_DROP_DURATION; 2803 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2804 onCompleteRunnable, this); 2805 } 2806 } else { 2807 d.deferDragViewCleanupPostAnimation = false; 2808 cell.setVisibility(VISIBLE); 2809 } 2810 parent.onDropChild(cell); 2811 } 2812 } 2813 2814 public void setFinalScrollForPageChange(int pageIndex) { 2815 CellLayout cl = (CellLayout) getChildAt(pageIndex); 2816 if (cl != null) { 2817 mSavedScrollX = getScrollX(); 2818 mSavedTranslationX = cl.getTranslationX(); 2819 mSavedRotationY = cl.getRotationY(); 2820 final int newX = getScrollForPage(pageIndex); 2821 setScrollX(newX); 2822 cl.setTranslationX(0f); 2823 cl.setRotationY(0f); 2824 } 2825 } 2826 2827 public void resetFinalScrollForPageChange(int pageIndex) { 2828 if (pageIndex >= 0) { 2829 CellLayout cl = (CellLayout) getChildAt(pageIndex); 2830 setScrollX(mSavedScrollX); 2831 cl.setTranslationX(mSavedTranslationX); 2832 cl.setRotationY(mSavedRotationY); 2833 } 2834 } 2835 2836 public void getViewLocationRelativeToSelf(View v, int[] location) { 2837 getLocationInWindow(location); 2838 int x = location[0]; 2839 int y = location[1]; 2840 2841 v.getLocationInWindow(location); 2842 int vX = location[0]; 2843 int vY = location[1]; 2844 2845 location[0] = vX - x; 2846 location[1] = vY - y; 2847 } 2848 2849 public void onDragEnter(DragObject d) { 2850 mDragEnforcer.onDragEnter(); 2851 mCreateUserFolderOnDrop = false; 2852 mAddToExistingFolderOnDrop = false; 2853 2854 mDropToLayout = null; 2855 CellLayout layout = getCurrentDropLayout(); 2856 setCurrentDropLayout(layout); 2857 setCurrentDragOverlappingLayout(layout); 2858 2859 if (!workspaceInModalState()) { 2860 mLauncher.getDragLayer().showPageHints(); 2861 } 2862 } 2863 2864 /** Return a rect that has the cellWidth/cellHeight (left, top), and 2865 * widthGap/heightGap (right, bottom) */ 2866 static Rect getCellLayoutMetrics(Launcher launcher, int orientation) { 2867 LauncherAppState app = LauncherAppState.getInstance(); 2868 DeviceProfile grid = app.getDynamicGrid().getDeviceProfile(); 2869 2870 Display display = launcher.getWindowManager().getDefaultDisplay(); 2871 Point smallestSize = new Point(); 2872 Point largestSize = new Point(); 2873 display.getCurrentSizeRange(smallestSize, largestSize); 2874 int countX = (int) grid.numColumns; 2875 int countY = (int) grid.numRows; 2876 if (orientation == CellLayout.LANDSCAPE) { 2877 if (mLandscapeCellLayoutMetrics == null) { 2878 Rect padding = grid.getWorkspacePadding(CellLayout.LANDSCAPE); 2879 int width = largestSize.x - padding.left - padding.right; 2880 int height = smallestSize.y - padding.top - padding.bottom; 2881 mLandscapeCellLayoutMetrics = new Rect(); 2882 mLandscapeCellLayoutMetrics.set( 2883 grid.calculateCellWidth(width, countX), 2884 grid.calculateCellHeight(height, countY), 0, 0); 2885 } 2886 return mLandscapeCellLayoutMetrics; 2887 } else if (orientation == CellLayout.PORTRAIT) { 2888 if (mPortraitCellLayoutMetrics == null) { 2889 Rect padding = grid.getWorkspacePadding(CellLayout.PORTRAIT); 2890 int width = smallestSize.x - padding.left - padding.right; 2891 int height = largestSize.y - padding.top - padding.bottom; 2892 mPortraitCellLayoutMetrics = new Rect(); 2893 mPortraitCellLayoutMetrics.set( 2894 grid.calculateCellWidth(width, countX), 2895 grid.calculateCellHeight(height, countY), 0, 0); 2896 } 2897 return mPortraitCellLayoutMetrics; 2898 } 2899 return null; 2900 } 2901 2902 public void onDragExit(DragObject d) { 2903 mDragEnforcer.onDragExit(); 2904 2905 // Here we store the final page that will be dropped to, if the workspace in fact 2906 // receives the drop 2907 if (mInScrollArea) { 2908 if (isPageMoving()) { 2909 // If the user drops while the page is scrolling, we should use that page as the 2910 // destination instead of the page that is being hovered over. 2911 mDropToLayout = (CellLayout) getPageAt(getNextPage()); 2912 } else { 2913 mDropToLayout = mDragOverlappingLayout; 2914 } 2915 } else { 2916 mDropToLayout = mDragTargetLayout; 2917 } 2918 2919 if (mDragMode == DRAG_MODE_CREATE_FOLDER) { 2920 mCreateUserFolderOnDrop = true; 2921 } else if (mDragMode == DRAG_MODE_ADD_TO_FOLDER) { 2922 mAddToExistingFolderOnDrop = true; 2923 } 2924 2925 // Reset the scroll area and previous drag target 2926 onResetScrollArea(); 2927 setCurrentDropLayout(null); 2928 setCurrentDragOverlappingLayout(null); 2929 2930 mSpringLoadedDragController.cancel(); 2931 2932 if (!mIsPageMoving) { 2933 hideOutlines(); 2934 } 2935 mLauncher.getDragLayer().hidePageHints(); 2936 } 2937 2938 void setCurrentDropLayout(CellLayout layout) { 2939 if (mDragTargetLayout != null) { 2940 mDragTargetLayout.revertTempState(); 2941 mDragTargetLayout.onDragExit(); 2942 } 2943 mDragTargetLayout = layout; 2944 if (mDragTargetLayout != null) { 2945 mDragTargetLayout.onDragEnter(); 2946 } 2947 cleanupReorder(true); 2948 cleanupFolderCreation(); 2949 setCurrentDropOverCell(-1, -1); 2950 } 2951 2952 void setCurrentDragOverlappingLayout(CellLayout layout) { 2953 if (mDragOverlappingLayout != null) { 2954 mDragOverlappingLayout.setIsDragOverlapping(false); 2955 } 2956 mDragOverlappingLayout = layout; 2957 if (mDragOverlappingLayout != null) { 2958 mDragOverlappingLayout.setIsDragOverlapping(true); 2959 } 2960 invalidate(); 2961 } 2962 2963 void setCurrentDropOverCell(int x, int y) { 2964 if (x != mDragOverX || y != mDragOverY) { 2965 mDragOverX = x; 2966 mDragOverY = y; 2967 setDragMode(DRAG_MODE_NONE); 2968 } 2969 } 2970 2971 void setDragMode(int dragMode) { 2972 if (dragMode != mDragMode) { 2973 if (dragMode == DRAG_MODE_NONE) { 2974 cleanupAddToFolder(); 2975 // We don't want to cancel the re-order alarm every time the target cell changes 2976 // as this feels to slow / unresponsive. 2977 cleanupReorder(false); 2978 cleanupFolderCreation(); 2979 } else if (dragMode == DRAG_MODE_ADD_TO_FOLDER) { 2980 cleanupReorder(true); 2981 cleanupFolderCreation(); 2982 } else if (dragMode == DRAG_MODE_CREATE_FOLDER) { 2983 cleanupAddToFolder(); 2984 cleanupReorder(true); 2985 } else if (dragMode == DRAG_MODE_REORDER) { 2986 cleanupAddToFolder(); 2987 cleanupFolderCreation(); 2988 } 2989 mDragMode = dragMode; 2990 } 2991 } 2992 2993 private void cleanupFolderCreation() { 2994 if (mDragFolderRingAnimator != null) { 2995 mDragFolderRingAnimator.animateToNaturalState(); 2996 mDragFolderRingAnimator = null; 2997 } 2998 mFolderCreationAlarm.setOnAlarmListener(null); 2999 mFolderCreationAlarm.cancelAlarm(); 3000 } 3001 3002 private void cleanupAddToFolder() { 3003 if (mDragOverFolderIcon != null) { 3004 mDragOverFolderIcon.onDragExit(null); 3005 mDragOverFolderIcon = null; 3006 } 3007 } 3008 3009 private void cleanupReorder(boolean cancelAlarm) { 3010 // Any pending reorders are canceled 3011 if (cancelAlarm) { 3012 mReorderAlarm.cancelAlarm(); 3013 } 3014 mLastReorderX = -1; 3015 mLastReorderY = -1; 3016 } 3017 3018 /* 3019 * 3020 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 3021 * coordinate space. The argument xy is modified with the return result. 3022 * 3023 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 3024 * computing it itself; we use this to avoid redundant matrix inversions in 3025 * findMatchingPageForDragOver 3026 * 3027 */ 3028 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 3029 xy[0] = xy[0] - v.getLeft(); 3030 xy[1] = xy[1] - v.getTop(); 3031 } 3032 3033 boolean isPointInSelfOverHotseat(int x, int y, Rect r) { 3034 if (r == null) { 3035 r = new Rect(); 3036 } 3037 mTempPt[0] = x; 3038 mTempPt[1] = y; 3039 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(this, mTempPt, true); 3040 3041 LauncherAppState app = LauncherAppState.getInstance(); 3042 DeviceProfile grid = app.getDynamicGrid().getDeviceProfile(); 3043 r = grid.getHotseatRect(); 3044 if (r.contains(mTempPt[0], mTempPt[1])) { 3045 return true; 3046 } 3047 return false; 3048 } 3049 3050 void mapPointFromSelfToHotseatLayout(Hotseat hotseat, float[] xy) { 3051 mTempPt[0] = (int) xy[0]; 3052 mTempPt[1] = (int) xy[1]; 3053 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(this, mTempPt, true); 3054 mLauncher.getDragLayer().mapCoordInSelfToDescendent(hotseat.getLayout(), mTempPt); 3055 3056 xy[0] = mTempPt[0]; 3057 xy[1] = mTempPt[1]; 3058 } 3059 3060 /* 3061 * 3062 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 3063 * the parent View's coordinate space. The argument xy is modified with the return result. 3064 * 3065 */ 3066 void mapPointFromChildToSelf(View v, float[] xy) { 3067 xy[0] += v.getLeft(); 3068 xy[1] += v.getTop(); 3069 } 3070 3071 static private float squaredDistance(float[] point1, float[] point2) { 3072 float distanceX = point1[0] - point2[0]; 3073 float distanceY = point2[1] - point2[1]; 3074 return distanceX * distanceX + distanceY * distanceY; 3075 } 3076 3077 /* 3078 * 3079 * This method returns the CellLayout that is currently being dragged to. In order to drag 3080 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 3081 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 3082 * 3083 * Return null if no CellLayout is currently being dragged over 3084 * 3085 */ 3086 private CellLayout findMatchingPageForDragOver( 3087 DragView dragView, float originX, float originY, boolean exact) { 3088 // We loop through all the screens (ie CellLayouts) and see which ones overlap 3089 // with the item being dragged and then choose the one that's closest to the touch point 3090 final int screenCount = getChildCount(); 3091 CellLayout bestMatchingScreen = null; 3092 float smallestDistSoFar = Float.MAX_VALUE; 3093 3094 for (int i = 0; i < screenCount; i++) { 3095 // The custom content screen is not a valid drag over option 3096 if (mScreenOrder.get(i) == CUSTOM_CONTENT_SCREEN_ID) { 3097 continue; 3098 } 3099 3100 CellLayout cl = (CellLayout) getChildAt(i); 3101 3102 final float[] touchXy = {originX, originY}; 3103 // Transform the touch coordinates to the CellLayout's local coordinates 3104 // If the touch point is within the bounds of the cell layout, we can return immediately 3105 cl.getMatrix().invert(mTempInverseMatrix); 3106 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 3107 3108 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 3109 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 3110 return cl; 3111 } 3112 3113 if (!exact) { 3114 // Get the center of the cell layout in screen coordinates 3115 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 3116 cellLayoutCenter[0] = cl.getWidth()/2; 3117 cellLayoutCenter[1] = cl.getHeight()/2; 3118 mapPointFromChildToSelf(cl, cellLayoutCenter); 3119 3120 touchXy[0] = originX; 3121 touchXy[1] = originY; 3122 3123 // Calculate the distance between the center of the CellLayout 3124 // and the touch point 3125 float dist = squaredDistance(touchXy, cellLayoutCenter); 3126 3127 if (dist < smallestDistSoFar) { 3128 smallestDistSoFar = dist; 3129 bestMatchingScreen = cl; 3130 } 3131 } 3132 } 3133 return bestMatchingScreen; 3134 } 3135 3136 private boolean isDragWidget(DragObject d) { 3137 return (d.dragInfo instanceof LauncherAppWidgetInfo || 3138 d.dragInfo instanceof PendingAddWidgetInfo); 3139 } 3140 private boolean isExternalDragWidget(DragObject d) { 3141 return d.dragSource != this && isDragWidget(d); 3142 } 3143 3144 public void onDragOver(DragObject d) { 3145 // Skip drag over events while we are dragging over side pages 3146 if (mInScrollArea || !transitionStateShouldAllowDrop()) return; 3147 3148 Rect r = new Rect(); 3149 CellLayout layout = null; 3150 ItemInfo item = (ItemInfo) d.dragInfo; 3151 if (item == null) { 3152 if (LauncherAppState.isDogfoodBuild()) { 3153 throw new NullPointerException("DragObject has null info"); 3154 } 3155 return; 3156 } 3157 3158 // Ensure that we have proper spans for the item that we are dropping 3159 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 3160 mDragViewVisualCenter = d.getVisualCenter(mDragViewVisualCenter); 3161 3162 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 3163 // Identify whether we have dragged over a side page 3164 if (workspaceInModalState()) { 3165 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 3166 if (isPointInSelfOverHotseat(d.x, d.y, r)) { 3167 layout = mLauncher.getHotseat().getLayout(); 3168 } 3169 } 3170 if (layout == null) { 3171 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false); 3172 } 3173 if (layout != mDragTargetLayout) { 3174 setCurrentDropLayout(layout); 3175 setCurrentDragOverlappingLayout(layout); 3176 3177 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 3178 if (isInSpringLoadedMode) { 3179 if (mLauncher.isHotseatLayout(layout)) { 3180 mSpringLoadedDragController.cancel(); 3181 } else { 3182 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 3183 } 3184 } 3185 } 3186 } else { 3187 // Test to see if we are over the hotseat otherwise just use the current page 3188 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 3189 if (isPointInSelfOverHotseat(d.x, d.y, r)) { 3190 layout = mLauncher.getHotseat().getLayout(); 3191 } 3192 } 3193 if (layout == null) { 3194 layout = getCurrentDropLayout(); 3195 } 3196 if (layout != mDragTargetLayout) { 3197 setCurrentDropLayout(layout); 3198 setCurrentDragOverlappingLayout(layout); 3199 } 3200 } 3201 3202 // Handle the drag over 3203 if (mDragTargetLayout != null) { 3204 // We want the point to be mapped to the dragTarget. 3205 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 3206 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 3207 } else { 3208 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 3209 } 3210 3211 ItemInfo info = (ItemInfo) d.dragInfo; 3212 3213 int minSpanX = item.spanX; 3214 int minSpanY = item.spanY; 3215 if (item.minSpanX > 0 && item.minSpanY > 0) { 3216 minSpanX = item.minSpanX; 3217 minSpanY = item.minSpanY; 3218 } 3219 3220 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 3221 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, 3222 mDragTargetLayout, mTargetCell); 3223 int reorderX = mTargetCell[0]; 3224 int reorderY = mTargetCell[1]; 3225 3226 setCurrentDropOverCell(mTargetCell[0], mTargetCell[1]); 3227 3228 float targetCellDistance = mDragTargetLayout.getDistanceFromCell( 3229 mDragViewVisualCenter[0], mDragViewVisualCenter[1], mTargetCell); 3230 3231 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 3232 mTargetCell[1]); 3233 3234 manageFolderFeedback(info, mDragTargetLayout, mTargetCell, 3235 targetCellDistance, dragOverView, d.accessibleDrag); 3236 3237 boolean nearestDropOccupied = mDragTargetLayout.isNearestDropLocationOccupied((int) 3238 mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], item.spanX, 3239 item.spanY, child, mTargetCell); 3240 3241 if (!nearestDropOccupied) { 3242 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 3243 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 3244 mTargetCell[0], mTargetCell[1], item.spanX, item.spanY, false, 3245 d.dragView.getDragVisualizeOffset(), d.dragView.getDragRegion()); 3246 } else if ((mDragMode == DRAG_MODE_NONE || mDragMode == DRAG_MODE_REORDER) 3247 && !mReorderAlarm.alarmPending() && (mLastReorderX != reorderX || 3248 mLastReorderY != reorderY)) { 3249 3250 int[] resultSpan = new int[2]; 3251 mDragTargetLayout.performReorder((int) mDragViewVisualCenter[0], 3252 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, item.spanX, item.spanY, 3253 child, mTargetCell, resultSpan, CellLayout.MODE_SHOW_REORDER_HINT); 3254 3255 // Otherwise, if we aren't adding to or creating a folder and there's no pending 3256 // reorder, then we schedule a reorder 3257 ReorderAlarmListener listener = new ReorderAlarmListener(mDragViewVisualCenter, 3258 minSpanX, minSpanY, item.spanX, item.spanY, d.dragView, child); 3259 mReorderAlarm.setOnAlarmListener(listener); 3260 mReorderAlarm.setAlarm(REORDER_TIMEOUT); 3261 } 3262 3263 if (mDragMode == DRAG_MODE_CREATE_FOLDER || mDragMode == DRAG_MODE_ADD_TO_FOLDER || 3264 !nearestDropOccupied) { 3265 if (mDragTargetLayout != null) { 3266 mDragTargetLayout.revertTempState(); 3267 } 3268 } 3269 } 3270 } 3271 3272 private void manageFolderFeedback(ItemInfo info, CellLayout targetLayout, 3273 int[] targetCell, float distance, View dragOverView, boolean accessibleDrag) { 3274 boolean userFolderPending = willCreateUserFolder(info, targetLayout, targetCell, distance, 3275 false); 3276 if (mDragMode == DRAG_MODE_NONE && userFolderPending && 3277 !mFolderCreationAlarm.alarmPending()) { 3278 3279 FolderCreationAlarmListener listener = new 3280 FolderCreationAlarmListener(targetLayout, targetCell[0], targetCell[1]); 3281 3282 if (!accessibleDrag) { 3283 mFolderCreationAlarm.setOnAlarmListener(listener); 3284 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 3285 } else { 3286 listener.onAlarm(mFolderCreationAlarm); 3287 } 3288 return; 3289 } 3290 3291 boolean willAddToFolder = 3292 willAddToExistingUserFolder(info, targetLayout, targetCell, distance); 3293 3294 if (willAddToFolder && mDragMode == DRAG_MODE_NONE) { 3295 mDragOverFolderIcon = ((FolderIcon) dragOverView); 3296 mDragOverFolderIcon.onDragEnter(info); 3297 if (targetLayout != null) { 3298 targetLayout.clearDragOutlines(); 3299 } 3300 setDragMode(DRAG_MODE_ADD_TO_FOLDER); 3301 return; 3302 } 3303 3304 if (mDragMode == DRAG_MODE_ADD_TO_FOLDER && !willAddToFolder) { 3305 setDragMode(DRAG_MODE_NONE); 3306 } 3307 if (mDragMode == DRAG_MODE_CREATE_FOLDER && !userFolderPending) { 3308 setDragMode(DRAG_MODE_NONE); 3309 } 3310 3311 return; 3312 } 3313 3314 class FolderCreationAlarmListener implements OnAlarmListener { 3315 CellLayout layout; 3316 int cellX; 3317 int cellY; 3318 3319 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 3320 this.layout = layout; 3321 this.cellX = cellX; 3322 this.cellY = cellY; 3323 } 3324 3325 public void onAlarm(Alarm alarm) { 3326 if (mDragFolderRingAnimator != null) { 3327 // This shouldn't happen ever, but just in case, make sure we clean up the mess. 3328 mDragFolderRingAnimator.animateToNaturalState(); 3329 } 3330 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 3331 mDragFolderRingAnimator.setCell(cellX, cellY); 3332 mDragFolderRingAnimator.setCellLayout(layout); 3333 mDragFolderRingAnimator.animateToAcceptState(); 3334 layout.showFolderAccept(mDragFolderRingAnimator); 3335 layout.clearDragOutlines(); 3336 setDragMode(DRAG_MODE_CREATE_FOLDER); 3337 } 3338 } 3339 3340 class ReorderAlarmListener implements OnAlarmListener { 3341 float[] dragViewCenter; 3342 int minSpanX, minSpanY, spanX, spanY; 3343 DragView dragView; 3344 View child; 3345 3346 public ReorderAlarmListener(float[] dragViewCenter, int minSpanX, int minSpanY, int spanX, 3347 int spanY, DragView dragView, View child) { 3348 this.dragViewCenter = dragViewCenter; 3349 this.minSpanX = minSpanX; 3350 this.minSpanY = minSpanY; 3351 this.spanX = spanX; 3352 this.spanY = spanY; 3353 this.child = child; 3354 this.dragView = dragView; 3355 } 3356 3357 public void onAlarm(Alarm alarm) { 3358 int[] resultSpan = new int[2]; 3359 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 3360 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, mDragTargetLayout, 3361 mTargetCell); 3362 mLastReorderX = mTargetCell[0]; 3363 mLastReorderY = mTargetCell[1]; 3364 3365 mTargetCell = mDragTargetLayout.performReorder((int) mDragViewVisualCenter[0], 3366 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 3367 child, mTargetCell, resultSpan, CellLayout.MODE_DRAG_OVER); 3368 3369 if (mTargetCell[0] < 0 || mTargetCell[1] < 0) { 3370 mDragTargetLayout.revertTempState(); 3371 } else { 3372 setDragMode(DRAG_MODE_REORDER); 3373 } 3374 3375 boolean resize = resultSpan[0] != spanX || resultSpan[1] != spanY; 3376 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 3377 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 3378 mTargetCell[0], mTargetCell[1], resultSpan[0], resultSpan[1], resize, 3379 dragView.getDragVisualizeOffset(), dragView.getDragRegion()); 3380 } 3381 } 3382 3383 @Override 3384 public void getHitRectRelativeToDragLayer(Rect outRect) { 3385 // We want the workspace to have the whole area of the display (it will find the correct 3386 // cell layout to drop to in the existing drag/drop logic. 3387 mLauncher.getDragLayer().getDescendantRectRelativeToSelf(this, outRect); 3388 } 3389 3390 /** 3391 * Add the item specified by dragInfo to the given layout. 3392 * @return true if successful 3393 */ 3394 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 3395 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 3396 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 3397 return true; 3398 } 3399 mLauncher.showOutOfSpaceMessage(mLauncher.isHotseatLayout(layout)); 3400 return false; 3401 } 3402 3403 private void onDropExternal(int[] touchXY, Object dragInfo, 3404 CellLayout cellLayout, boolean insertAtFirst) { 3405 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 3406 } 3407 3408 /** 3409 * Drop an item that didn't originate on one of the workspace screens. 3410 * It may have come from Launcher (e.g. from all apps or customize), or it may have 3411 * come from another app altogether. 3412 * 3413 * NOTE: This can also be called when we are outside of a drag event, when we want 3414 * to add an item to one of the workspace screens. 3415 */ 3416 private void onDropExternal(final int[] touchXY, final Object dragInfo, 3417 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 3418 final Runnable exitSpringLoadedRunnable = new Runnable() { 3419 @Override 3420 public void run() { 3421 mLauncher.exitSpringLoadedDragModeDelayed(true, 3422 Launcher.EXIT_SPRINGLOADED_MODE_SHORT_TIMEOUT, null); 3423 } 3424 }; 3425 3426 ItemInfo info = (ItemInfo) dragInfo; 3427 int spanX = info.spanX; 3428 int spanY = info.spanY; 3429 if (mDragInfo != null) { 3430 spanX = mDragInfo.spanX; 3431 spanY = mDragInfo.spanY; 3432 } 3433 3434 final long container = mLauncher.isHotseatLayout(cellLayout) ? 3435 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 3436 LauncherSettings.Favorites.CONTAINER_DESKTOP; 3437 final long screenId = getIdForScreen(cellLayout); 3438 if (!mLauncher.isHotseatLayout(cellLayout) 3439 && screenId != getScreenIdForPageIndex(mCurrentPage) 3440 && mState != State.SPRING_LOADED) { 3441 snapToScreenId(screenId, null); 3442 } 3443 3444 if (info instanceof PendingAddItemInfo) { 3445 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 3446 3447 boolean findNearestVacantCell = true; 3448 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 3449 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3450 cellLayout, mTargetCell); 3451 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3452 mDragViewVisualCenter[1], mTargetCell); 3453 if (willCreateUserFolder((ItemInfo) d.dragInfo, cellLayout, mTargetCell, 3454 distance, true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 3455 cellLayout, mTargetCell, distance)) { 3456 findNearestVacantCell = false; 3457 } 3458 } 3459 3460 final ItemInfo item = (ItemInfo) d.dragInfo; 3461 boolean updateWidgetSize = false; 3462 if (findNearestVacantCell) { 3463 int minSpanX = item.spanX; 3464 int minSpanY = item.spanY; 3465 if (item.minSpanX > 0 && item.minSpanY > 0) { 3466 minSpanX = item.minSpanX; 3467 minSpanY = item.minSpanY; 3468 } 3469 int[] resultSpan = new int[2]; 3470 mTargetCell = cellLayout.performReorder((int) mDragViewVisualCenter[0], 3471 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, info.spanX, info.spanY, 3472 null, mTargetCell, resultSpan, CellLayout.MODE_ON_DROP_EXTERNAL); 3473 3474 if (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY) { 3475 updateWidgetSize = true; 3476 } 3477 item.spanX = resultSpan[0]; 3478 item.spanY = resultSpan[1]; 3479 } 3480 3481 Runnable onAnimationCompleteRunnable = new Runnable() { 3482 @Override 3483 public void run() { 3484 // Normally removeExtraEmptyScreen is called in Workspace#onDragEnd, but when 3485 // adding an item that may not be dropped right away (due to a config activity) 3486 // we defer the removal until the activity returns. 3487 deferRemoveExtraEmptyScreen(); 3488 3489 // When dragging and dropping from customization tray, we deal with creating 3490 // widgets/shortcuts/folders in a slightly different way 3491 mLauncher.addPendingItem(pendingInfo, container, screenId, mTargetCell, 3492 item.spanX, item.spanY); 3493 } 3494 }; 3495 boolean isWidget = pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET 3496 || pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_CUSTOM_APPWIDGET; 3497 3498 View finalView = isWidget ? ((PendingAddWidgetInfo) pendingInfo).boundWidget : null; 3499 3500 if (finalView instanceof AppWidgetHostView && updateWidgetSize) { 3501 AppWidgetHostView awhv = (AppWidgetHostView) finalView; 3502 AppWidgetResizeFrame.updateWidgetSizeRanges(awhv, mLauncher, item.spanX, 3503 item.spanY); 3504 } 3505 3506 int animationStyle = ANIMATE_INTO_POSITION_AND_DISAPPEAR; 3507 if (isWidget && ((PendingAddWidgetInfo) pendingInfo).info != null && 3508 ((PendingAddWidgetInfo) pendingInfo).info.configure != null) { 3509 animationStyle = ANIMATE_INTO_POSITION_AND_REMAIN; 3510 } 3511 animateWidgetDrop(info, cellLayout, d.dragView, onAnimationCompleteRunnable, 3512 animationStyle, finalView, true); 3513 } else { 3514 // This is for other drag/drop cases, like dragging from All Apps 3515 View view = null; 3516 3517 switch (info.itemType) { 3518 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 3519 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3520 if (info.container == NO_ID && info instanceof AppInfo) { 3521 // Came from all apps -- make a copy 3522 info = ((AppInfo) info).makeShortcut(); 3523 } 3524 view = mLauncher.createShortcut(R.layout.application, cellLayout, 3525 (ShortcutInfo) info); 3526 break; 3527 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 3528 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 3529 (FolderInfo) info, mIconCache); 3530 break; 3531 default: 3532 throw new IllegalStateException("Unknown item type: " + info.itemType); 3533 } 3534 3535 // First we find the cell nearest to point at which the item is 3536 // dropped, without any consideration to whether there is an item there. 3537 if (touchXY != null) { 3538 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3539 cellLayout, mTargetCell); 3540 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3541 mDragViewVisualCenter[1], mTargetCell); 3542 d.postAnimationRunnable = exitSpringLoadedRunnable; 3543 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, distance, 3544 true, d.dragView, d.postAnimationRunnable)) { 3545 return; 3546 } 3547 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, distance, d, 3548 true)) { 3549 return; 3550 } 3551 } 3552 3553 if (touchXY != null) { 3554 // when dragging and dropping, just find the closest free spot 3555 mTargetCell = cellLayout.performReorder((int) mDragViewVisualCenter[0], 3556 (int) mDragViewVisualCenter[1], 1, 1, 1, 1, 3557 null, mTargetCell, null, CellLayout.MODE_ON_DROP_EXTERNAL); 3558 } else { 3559 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3560 } 3561 // Add the item to DB before adding to screen ensures that the container and other 3562 // values of the info is properly updated. 3563 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screenId, 3564 mTargetCell[0], mTargetCell[1]); 3565 3566 addInScreen(view, container, screenId, mTargetCell[0], mTargetCell[1], info.spanX, 3567 info.spanY, insertAtFirst); 3568 cellLayout.onDropChild(view); 3569 cellLayout.getShortcutsAndWidgets().measureChild(view); 3570 3571 if (d.dragView != null) { 3572 // We wrap the animation call in the temporary set and reset of the current 3573 // cellLayout to its final transform -- this means we animate the drag view to 3574 // the correct final location. 3575 setFinalTransitionTransform(cellLayout); 3576 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 3577 exitSpringLoadedRunnable, this); 3578 resetTransitionTransform(cellLayout); 3579 } 3580 } 3581 } 3582 3583 public Bitmap createWidgetBitmap(ItemInfo widgetInfo, View layout) { 3584 int[] unScaledSize = mLauncher.getWorkspace().estimateItemSize(widgetInfo, false); 3585 int visibility = layout.getVisibility(); 3586 layout.setVisibility(VISIBLE); 3587 3588 int width = MeasureSpec.makeMeasureSpec(unScaledSize[0], MeasureSpec.EXACTLY); 3589 int height = MeasureSpec.makeMeasureSpec(unScaledSize[1], MeasureSpec.EXACTLY); 3590 Bitmap b = Bitmap.createBitmap(unScaledSize[0], unScaledSize[1], 3591 Bitmap.Config.ARGB_8888); 3592 mCanvas.setBitmap(b); 3593 3594 layout.measure(width, height); 3595 layout.layout(0, 0, unScaledSize[0], unScaledSize[1]); 3596 layout.draw(mCanvas); 3597 mCanvas.setBitmap(null); 3598 layout.setVisibility(visibility); 3599 return b; 3600 } 3601 3602 private void getFinalPositionForDropAnimation(int[] loc, float[] scaleXY, 3603 DragView dragView, CellLayout layout, ItemInfo info, int[] targetCell, 3604 boolean external, boolean scale) { 3605 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 3606 // location and size on the home screen. 3607 int spanX = info.spanX; 3608 int spanY = info.spanY; 3609 3610 Rect r = estimateItemPosition(layout, info, targetCell[0], targetCell[1], spanX, spanY); 3611 loc[0] = r.left; 3612 loc[1] = r.top; 3613 3614 setFinalTransitionTransform(layout); 3615 float cellLayoutScale = 3616 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(layout, loc, true); 3617 resetTransitionTransform(layout); 3618 3619 float dragViewScaleX; 3620 float dragViewScaleY; 3621 if (scale) { 3622 dragViewScaleX = (1.0f * r.width()) / dragView.getMeasuredWidth(); 3623 dragViewScaleY = (1.0f * r.height()) / dragView.getMeasuredHeight(); 3624 } else { 3625 dragViewScaleX = 1f; 3626 dragViewScaleY = 1f; 3627 } 3628 3629 // The animation will scale the dragView about its center, so we need to center about 3630 // the final location. 3631 loc[0] -= (dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 3632 loc[1] -= (dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 3633 3634 scaleXY[0] = dragViewScaleX * cellLayoutScale; 3635 scaleXY[1] = dragViewScaleY * cellLayoutScale; 3636 } 3637 3638 public void animateWidgetDrop(ItemInfo info, CellLayout cellLayout, DragView dragView, 3639 final Runnable onCompleteRunnable, int animationType, final View finalView, 3640 boolean external) { 3641 Rect from = new Rect(); 3642 mLauncher.getDragLayer().getViewRectRelativeToSelf(dragView, from); 3643 3644 int[] finalPos = new int[2]; 3645 float scaleXY[] = new float[2]; 3646 boolean scalePreview = !(info instanceof PendingAddShortcutInfo); 3647 getFinalPositionForDropAnimation(finalPos, scaleXY, dragView, cellLayout, info, mTargetCell, 3648 external, scalePreview); 3649 3650 Resources res = mLauncher.getResources(); 3651 final int duration = res.getInteger(R.integer.config_dropAnimMaxDuration) - 200; 3652 3653 // In the case where we've prebound the widget, we remove it from the DragLayer 3654 if (finalView instanceof AppWidgetHostView && external) { 3655 mLauncher.getDragLayer().removeView(finalView); 3656 } 3657 3658 boolean isWidget = info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET || 3659 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_CUSTOM_APPWIDGET; 3660 if ((animationType == ANIMATE_INTO_POSITION_AND_RESIZE || external) && finalView != null) { 3661 Bitmap crossFadeBitmap = createWidgetBitmap(info, finalView); 3662 dragView.setCrossFadeBitmap(crossFadeBitmap); 3663 dragView.crossFade((int) (duration * 0.8f)); 3664 } else if (isWidget && external) { 3665 scaleXY[0] = scaleXY[1] = Math.min(scaleXY[0], scaleXY[1]); 3666 } 3667 3668 DragLayer dragLayer = mLauncher.getDragLayer(); 3669 if (animationType == CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION) { 3670 mLauncher.getDragLayer().animateViewIntoPosition(dragView, finalPos, 0f, 0.1f, 0.1f, 3671 DragLayer.ANIMATION_END_DISAPPEAR, onCompleteRunnable, duration); 3672 } else { 3673 int endStyle; 3674 if (animationType == ANIMATE_INTO_POSITION_AND_REMAIN) { 3675 endStyle = DragLayer.ANIMATION_END_REMAIN_VISIBLE; 3676 } else { 3677 endStyle = DragLayer.ANIMATION_END_DISAPPEAR;; 3678 } 3679 3680 Runnable onComplete = new Runnable() { 3681 @Override 3682 public void run() { 3683 if (finalView != null) { 3684 finalView.setVisibility(VISIBLE); 3685 } 3686 if (onCompleteRunnable != null) { 3687 onCompleteRunnable.run(); 3688 } 3689 } 3690 }; 3691 dragLayer.animateViewIntoPosition(dragView, from.left, from.top, finalPos[0], 3692 finalPos[1], 1, 1, 1, scaleXY[0], scaleXY[1], onComplete, endStyle, 3693 duration, this); 3694 } 3695 } 3696 3697 public void setFinalTransitionTransform(CellLayout layout) { 3698 if (isSwitchingState()) { 3699 mCurrentScale = getScaleX(); 3700 setScaleX(mStateTransitionAnimation.getFinalScale()); 3701 setScaleY(mStateTransitionAnimation.getFinalScale()); 3702 } 3703 } 3704 public void resetTransitionTransform(CellLayout layout) { 3705 if (isSwitchingState()) { 3706 setScaleX(mCurrentScale); 3707 setScaleY(mCurrentScale); 3708 } 3709 } 3710 3711 /** 3712 * Return the current {@link CellLayout}, correctly picking the destination 3713 * screen while a scroll is in progress. 3714 */ 3715 public CellLayout getCurrentDropLayout() { 3716 return (CellLayout) getChildAt(getNextPage()); 3717 } 3718 3719 /** 3720 * Return the current CellInfo describing our current drag; this method exists 3721 * so that Launcher can sync this object with the correct info when the activity is created/ 3722 * destroyed 3723 * 3724 */ 3725 public CellLayout.CellInfo getDragInfo() { 3726 return mDragInfo; 3727 } 3728 3729 public int getCurrentPageOffsetFromCustomContent() { 3730 return getNextPage() - numCustomPages(); 3731 } 3732 3733 /** 3734 * Calculate the nearest cell where the given object would be dropped. 3735 * 3736 * pixelX and pixelY should be in the coordinate system of layout 3737 */ 3738 @Thunk int[] findNearestArea(int pixelX, int pixelY, 3739 int spanX, int spanY, CellLayout layout, int[] recycle) { 3740 return layout.findNearestArea( 3741 pixelX, pixelY, spanX, spanY, recycle); 3742 } 3743 3744 void setup(DragController dragController) { 3745 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3746 mDragController = dragController; 3747 3748 // hardware layers on children are enabled on startup, but should be disabled until 3749 // needed 3750 updateChildrenLayersEnabled(false); 3751 } 3752 3753 /** 3754 * Called at the end of a drag which originated on the workspace. 3755 */ 3756 public void onDropCompleted(final View target, final DragObject d, 3757 final boolean isFlingToDelete, final boolean success) { 3758 if (mDeferDropAfterUninstall) { 3759 mDeferredAction = new Runnable() { 3760 public void run() { 3761 onDropCompleted(target, d, isFlingToDelete, success); 3762 mDeferredAction = null; 3763 } 3764 }; 3765 return; 3766 } 3767 3768 boolean beingCalledAfterUninstall = mDeferredAction != null; 3769 3770 if (success && !(beingCalledAfterUninstall && !mUninstallSuccessful)) { 3771 if (target != this && mDragInfo != null) { 3772 removeWorkspaceItem(mDragInfo.cell); 3773 } 3774 } else if (mDragInfo != null) { 3775 final CellLayout cellLayout = mLauncher.getCellLayout( 3776 mDragInfo.container, mDragInfo.screenId); 3777 if (cellLayout != null) { 3778 cellLayout.onDropChild(mDragInfo.cell); 3779 } else if (LauncherAppState.isDogfoodBuild()) { 3780 throw new RuntimeException("Invalid state: cellLayout == null in " 3781 + "Workspace#onDropCompleted. Please file a bug. "); 3782 }; 3783 } 3784 if ((d.cancelled || (beingCalledAfterUninstall && !mUninstallSuccessful)) 3785 && mDragInfo.cell != null) { 3786 mDragInfo.cell.setVisibility(VISIBLE); 3787 } 3788 mDragOutline = null; 3789 mDragInfo = null; 3790 } 3791 3792 /** 3793 * For opposite operation. See {@link #addInScreen}. 3794 */ 3795 public void removeWorkspaceItem(View v) { 3796 CellLayout parentCell = getParentCellLayoutForView(v); 3797 if (parentCell != null) { 3798 parentCell.removeView(v); 3799 } else if (LauncherAppState.isDogfoodBuild()) { 3800 throw new NullPointerException("mDragInfo.cell has null parent"); 3801 } 3802 if (v instanceof DropTarget) { 3803 mDragController.removeDropTarget((DropTarget) v); 3804 } 3805 } 3806 3807 @Override 3808 public void deferCompleteDropAfterUninstallActivity() { 3809 mDeferDropAfterUninstall = true; 3810 } 3811 3812 /// maybe move this into a smaller part 3813 @Override 3814 public void onUninstallActivityReturned(boolean success) { 3815 mDeferDropAfterUninstall = false; 3816 mUninstallSuccessful = success; 3817 if (mDeferredAction != null) { 3818 mDeferredAction.run(); 3819 } 3820 } 3821 3822 void updateItemLocationsInDatabase(CellLayout cl) { 3823 int count = cl.getShortcutsAndWidgets().getChildCount(); 3824 3825 long screenId = getIdForScreen(cl); 3826 int container = Favorites.CONTAINER_DESKTOP; 3827 3828 if (mLauncher.isHotseatLayout(cl)) { 3829 screenId = -1; 3830 container = Favorites.CONTAINER_HOTSEAT; 3831 } 3832 3833 for (int i = 0; i < count; i++) { 3834 View v = cl.getShortcutsAndWidgets().getChildAt(i); 3835 ItemInfo info = (ItemInfo) v.getTag(); 3836 // Null check required as the AllApps button doesn't have an item info 3837 if (info != null && info.requiresDbUpdate) { 3838 info.requiresDbUpdate = false; 3839 LauncherModel.modifyItemInDatabase(mLauncher, info, container, screenId, info.cellX, 3840 info.cellY, info.spanX, info.spanY); 3841 } 3842 } 3843 } 3844 3845 void saveWorkspaceToDb() { 3846 saveWorkspaceScreenToDb((CellLayout) mLauncher.getHotseat().getLayout()); 3847 int count = getChildCount(); 3848 for (int i = 0; i < count; i++) { 3849 CellLayout cl = (CellLayout) getChildAt(i); 3850 saveWorkspaceScreenToDb(cl); 3851 } 3852 } 3853 3854 void saveWorkspaceScreenToDb(CellLayout cl) { 3855 int count = cl.getShortcutsAndWidgets().getChildCount(); 3856 3857 long screenId = getIdForScreen(cl); 3858 int container = Favorites.CONTAINER_DESKTOP; 3859 3860 Hotseat hotseat = mLauncher.getHotseat(); 3861 if (mLauncher.isHotseatLayout(cl)) { 3862 screenId = -1; 3863 container = Favorites.CONTAINER_HOTSEAT; 3864 } 3865 3866 for (int i = 0; i < count; i++) { 3867 View v = cl.getShortcutsAndWidgets().getChildAt(i); 3868 ItemInfo info = (ItemInfo) v.getTag(); 3869 // Null check required as the AllApps button doesn't have an item info 3870 if (info != null) { 3871 int cellX = info.cellX; 3872 int cellY = info.cellY; 3873 if (container == Favorites.CONTAINER_HOTSEAT) { 3874 cellX = hotseat.getCellXFromOrder((int) info.screenId); 3875 cellY = hotseat.getCellYFromOrder((int) info.screenId); 3876 } 3877 LauncherModel.addItemToDatabase(mLauncher, info, container, screenId, cellX, cellY); 3878 } 3879 if (v instanceof FolderIcon) { 3880 FolderIcon fi = (FolderIcon) v; 3881 fi.getFolder().addItemLocationsInDatabase(); 3882 } 3883 } 3884 } 3885 3886 @Override 3887 public float getIntrinsicIconScaleFactor() { 3888 return 1f; 3889 } 3890 3891 @Override 3892 public boolean supportsFlingToDelete() { 3893 return true; 3894 } 3895 3896 @Override 3897 public boolean supportsAppInfoDropTarget() { 3898 return false; 3899 } 3900 3901 @Override 3902 public boolean supportsDeleteDropTarget() { 3903 return true; 3904 } 3905 3906 @Override 3907 public void onFlingToDelete(DragObject d, PointF vec) { 3908 // Do nothing 3909 } 3910 3911 @Override 3912 public void onFlingToDeleteCompleted() { 3913 // Do nothing 3914 } 3915 3916 public boolean isDropEnabled() { 3917 return true; 3918 } 3919 3920 @Override 3921 protected void dispatchRestoreInstanceState(SparseArray<Parcelable> container) { 3922 // We don't dispatch restoreInstanceState to our children using this code path. 3923 // Some pages will be restored immediately as their items are bound immediately, and 3924 // others we will need to wait until after their items are bound. 3925 mSavedStates = container; 3926 } 3927 3928 public void restoreInstanceStateForChild(int child) { 3929 if (mSavedStates != null) { 3930 mRestoredPages.add(child); 3931 CellLayout cl = (CellLayout) getChildAt(child); 3932 if (cl != null) { 3933 cl.restoreInstanceState(mSavedStates); 3934 } 3935 } 3936 } 3937 3938 public void restoreInstanceStateForRemainingPages() { 3939 int count = getChildCount(); 3940 for (int i = 0; i < count; i++) { 3941 if (!mRestoredPages.contains(i)) { 3942 restoreInstanceStateForChild(i); 3943 } 3944 } 3945 mRestoredPages.clear(); 3946 mSavedStates = null; 3947 } 3948 3949 @Override 3950 public void scrollLeft() { 3951 if (!workspaceInModalState() && !mIsSwitchingState) { 3952 super.scrollLeft(); 3953 } 3954 Folder openFolder = getOpenFolder(); 3955 if (openFolder != null) { 3956 openFolder.completeDragExit(); 3957 } 3958 } 3959 3960 @Override 3961 public void scrollRight() { 3962 if (!workspaceInModalState() && !mIsSwitchingState) { 3963 super.scrollRight(); 3964 } 3965 Folder openFolder = getOpenFolder(); 3966 if (openFolder != null) { 3967 openFolder.completeDragExit(); 3968 } 3969 } 3970 3971 @Override 3972 public boolean onEnterScrollArea(int x, int y, int direction) { 3973 // Ignore the scroll area if we are dragging over the hot seat 3974 boolean isPortrait = !LauncherAppState.isScreenLandscape(getContext()); 3975 if (mLauncher.getHotseat() != null && isPortrait) { 3976 Rect r = new Rect(); 3977 mLauncher.getHotseat().getHitRect(r); 3978 if (r.contains(x, y)) { 3979 return false; 3980 } 3981 } 3982 3983 boolean result = false; 3984 if (!workspaceInModalState() && !mIsSwitchingState && getOpenFolder() == null) { 3985 mInScrollArea = true; 3986 3987 final int page = getNextPage() + 3988 (direction == DragController.SCROLL_LEFT ? -1 : 1); 3989 // We always want to exit the current layout to ensure parity of enter / exit 3990 setCurrentDropLayout(null); 3991 3992 if (0 <= page && page < getChildCount()) { 3993 // Ensure that we are not dragging over to the custom content screen 3994 if (getScreenIdForPageIndex(page) == CUSTOM_CONTENT_SCREEN_ID) { 3995 return false; 3996 } 3997 3998 CellLayout layout = (CellLayout) getChildAt(page); 3999 setCurrentDragOverlappingLayout(layout); 4000 4001 // Workspace is responsible for drawing the edge glow on adjacent pages, 4002 // so we need to redraw the workspace when this may have changed. 4003 invalidate(); 4004 result = true; 4005 } 4006 } 4007 return result; 4008 } 4009 4010 @Override 4011 public boolean onExitScrollArea() { 4012 boolean result = false; 4013 if (mInScrollArea) { 4014 invalidate(); 4015 CellLayout layout = getCurrentDropLayout(); 4016 setCurrentDropLayout(layout); 4017 setCurrentDragOverlappingLayout(layout); 4018 4019 result = true; 4020 mInScrollArea = false; 4021 } 4022 return result; 4023 } 4024 4025 private void onResetScrollArea() { 4026 setCurrentDragOverlappingLayout(null); 4027 mInScrollArea = false; 4028 } 4029 4030 /** 4031 * Returns a specific CellLayout 4032 */ 4033 CellLayout getParentCellLayoutForView(View v) { 4034 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 4035 for (CellLayout layout : layouts) { 4036 if (layout.getShortcutsAndWidgets().indexOfChild(v) > -1) { 4037 return layout; 4038 } 4039 } 4040 return null; 4041 } 4042 4043 /** 4044 * Returns a list of all the CellLayouts in the workspace. 4045 */ 4046 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 4047 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 4048 int screenCount = getChildCount(); 4049 for (int screen = 0; screen < screenCount; screen++) { 4050 layouts.add(((CellLayout) getChildAt(screen))); 4051 } 4052 if (mLauncher.getHotseat() != null) { 4053 layouts.add(mLauncher.getHotseat().getLayout()); 4054 } 4055 return layouts; 4056 } 4057 4058 /** 4059 * We should only use this to search for specific children. Do not use this method to modify 4060 * ShortcutsAndWidgetsContainer directly. Includes ShortcutAndWidgetContainers from 4061 * the hotseat and workspace pages 4062 */ 4063 ArrayList<ShortcutAndWidgetContainer> getAllShortcutAndWidgetContainers() { 4064 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 4065 new ArrayList<ShortcutAndWidgetContainer>(); 4066 int screenCount = getChildCount(); 4067 for (int screen = 0; screen < screenCount; screen++) { 4068 childrenLayouts.add(((CellLayout) getChildAt(screen)).getShortcutsAndWidgets()); 4069 } 4070 if (mLauncher.getHotseat() != null) { 4071 childrenLayouts.add(mLauncher.getHotseat().getLayout().getShortcutsAndWidgets()); 4072 } 4073 return childrenLayouts; 4074 } 4075 4076 public Folder getFolderForTag(final Object tag) { 4077 return (Folder) getFirstMatch(new ItemOperator() { 4078 4079 @Override 4080 public boolean evaluate(ItemInfo info, View v, View parent) { 4081 return (v instanceof Folder) && (((Folder) v).getInfo() == tag) 4082 && ((Folder) v).getInfo().opened; 4083 } 4084 }); 4085 } 4086 4087 public View getViewForTag(final Object tag) { 4088 return getFirstMatch(new ItemOperator() { 4089 4090 @Override 4091 public boolean evaluate(ItemInfo info, View v, View parent) { 4092 return info == tag; 4093 } 4094 }); 4095 } 4096 4097 public LauncherAppWidgetHostView getWidgetForAppWidgetId(final int appWidgetId) { 4098 return (LauncherAppWidgetHostView) getFirstMatch(new ItemOperator() { 4099 4100 @Override 4101 public boolean evaluate(ItemInfo info, View v, View parent) { 4102 return (info instanceof LauncherAppWidgetInfo) && 4103 ((LauncherAppWidgetInfo) info).appWidgetId == appWidgetId; 4104 } 4105 }); 4106 } 4107 4108 private View getFirstMatch(final ItemOperator operator) { 4109 final View[] value = new View[1]; 4110 mapOverItems(MAP_NO_RECURSE, new ItemOperator() { 4111 @Override 4112 public boolean evaluate(ItemInfo info, View v, View parent) { 4113 if (operator.evaluate(info, v, parent)) { 4114 value[0] = v; 4115 return true; 4116 } 4117 return false; 4118 } 4119 }); 4120 return value[0]; 4121 } 4122 4123 void clearDropTargets() { 4124 mapOverItems(MAP_NO_RECURSE, new ItemOperator() { 4125 @Override 4126 public boolean evaluate(ItemInfo info, View v, View parent) { 4127 if (v instanceof DropTarget) { 4128 mDragController.removeDropTarget((DropTarget) v); 4129 } 4130 // not done, process all the shortcuts 4131 return false; 4132 } 4133 }); 4134 } 4135 4136 public void disableShortcutsByPackageName(final ArrayList<String> packages, 4137 final UserHandleCompat user, final int reason) { 4138 final HashSet<String> packageNames = new HashSet<String>(); 4139 packageNames.addAll(packages); 4140 4141 mapOverItems(MAP_RECURSE, new ItemOperator() { 4142 @Override 4143 public boolean evaluate(ItemInfo info, View v, View parent) { 4144 if (info instanceof ShortcutInfo && v instanceof BubbleTextView) { 4145 ShortcutInfo shortcutInfo = (ShortcutInfo) info; 4146 ComponentName cn = shortcutInfo.getTargetComponent(); 4147 if (user.equals(shortcutInfo.user) && cn != null 4148 && packageNames.contains(cn.getPackageName())) { 4149 shortcutInfo.isDisabled |= reason; 4150 BubbleTextView shortcut = (BubbleTextView) v; 4151 shortcut.applyFromShortcutInfo(shortcutInfo, mIconCache, true, false); 4152 4153 if (parent != null) { 4154 parent.invalidate(); 4155 } 4156 } 4157 } 4158 // process all the shortcuts 4159 return false; 4160 } 4161 }); 4162 } 4163 4164 // Removes ALL items that match a given package name, this is usually called when a package 4165 // has been removed and we want to remove all components (widgets, shortcuts, apps) that 4166 // belong to that package. 4167 void removeItemsByPackageName(final ArrayList<String> packages, final UserHandleCompat user) { 4168 final HashSet<String> packageNames = new HashSet<String>(); 4169 packageNames.addAll(packages); 4170 4171 // Filter out all the ItemInfos that this is going to affect 4172 final HashSet<ItemInfo> infos = new HashSet<ItemInfo>(); 4173 final HashSet<ComponentName> cns = new HashSet<ComponentName>(); 4174 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 4175 for (CellLayout layoutParent : cellLayouts) { 4176 ViewGroup layout = layoutParent.getShortcutsAndWidgets(); 4177 int childCount = layout.getChildCount(); 4178 for (int i = 0; i < childCount; ++i) { 4179 View view = layout.getChildAt(i); 4180 infos.add((ItemInfo) view.getTag()); 4181 } 4182 } 4183 LauncherModel.ItemInfoFilter filter = new LauncherModel.ItemInfoFilter() { 4184 @Override 4185 public boolean filterItem(ItemInfo parent, ItemInfo info, 4186 ComponentName cn) { 4187 if (packageNames.contains(cn.getPackageName()) 4188 && info.user.equals(user)) { 4189 cns.add(cn); 4190 return true; 4191 } 4192 return false; 4193 } 4194 }; 4195 LauncherModel.filterItemInfos(infos, filter); 4196 4197 // Remove the affected components 4198 removeItemsByComponentName(cns, user); 4199 } 4200 4201 /** 4202 * Removes items that match the item info specified. When applications are removed 4203 * as a part of an update, this is called to ensure that other widgets and application 4204 * shortcuts are not removed. 4205 */ 4206 void removeItemsByComponentName(final HashSet<ComponentName> componentNames, 4207 final UserHandleCompat user) { 4208 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 4209 for (final CellLayout layoutParent: cellLayouts) { 4210 final ViewGroup layout = layoutParent.getShortcutsAndWidgets(); 4211 4212 final HashMap<ItemInfo, View> children = new HashMap<ItemInfo, View>(); 4213 for (int j = 0; j < layout.getChildCount(); j++) { 4214 final View view = layout.getChildAt(j); 4215 children.put((ItemInfo) view.getTag(), view); 4216 } 4217 4218 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 4219 final HashMap<FolderInfo, ArrayList<ShortcutInfo>> folderAppsToRemove = 4220 new HashMap<FolderInfo, ArrayList<ShortcutInfo>>(); 4221 LauncherModel.ItemInfoFilter filter = new LauncherModel.ItemInfoFilter() { 4222 @Override 4223 public boolean filterItem(ItemInfo parent, ItemInfo info, 4224 ComponentName cn) { 4225 if (parent instanceof FolderInfo) { 4226 if (componentNames.contains(cn) && info.user.equals(user)) { 4227 FolderInfo folder = (FolderInfo) parent; 4228 ArrayList<ShortcutInfo> appsToRemove; 4229 if (folderAppsToRemove.containsKey(folder)) { 4230 appsToRemove = folderAppsToRemove.get(folder); 4231 } else { 4232 appsToRemove = new ArrayList<ShortcutInfo>(); 4233 folderAppsToRemove.put(folder, appsToRemove); 4234 } 4235 appsToRemove.add((ShortcutInfo) info); 4236 return true; 4237 } 4238 } else { 4239 if (componentNames.contains(cn) && info.user.equals(user)) { 4240 childrenToRemove.add(children.get(info)); 4241 return true; 4242 } 4243 } 4244 return false; 4245 } 4246 }; 4247 LauncherModel.filterItemInfos(children.keySet(), filter); 4248 4249 // Remove all the apps from their folders 4250 for (FolderInfo folder : folderAppsToRemove.keySet()) { 4251 ArrayList<ShortcutInfo> appsToRemove = folderAppsToRemove.get(folder); 4252 for (ShortcutInfo info : appsToRemove) { 4253 folder.remove(info); 4254 } 4255 } 4256 4257 // Remove all the other children 4258 for (View child : childrenToRemove) { 4259 // Note: We can not remove the view directly from CellLayoutChildren as this 4260 // does not re-mark the spaces as unoccupied. 4261 layoutParent.removeViewInLayout(child); 4262 if (child instanceof DropTarget) { 4263 mDragController.removeDropTarget((DropTarget) child); 4264 } 4265 } 4266 4267 if (childrenToRemove.size() > 0) { 4268 layout.requestLayout(); 4269 layout.invalidate(); 4270 } 4271 } 4272 4273 // Strip all the empty screens 4274 stripEmptyScreens(); 4275 } 4276 4277 interface ItemOperator { 4278 /** 4279 * Process the next itemInfo, possibly with side-effect on {@link ItemOperator#value}. 4280 * 4281 * @param info info for the shortcut 4282 * @param view view for the shortcut 4283 * @param parent containing folder, or null 4284 * @return true if done, false to continue the map 4285 */ 4286 public boolean evaluate(ItemInfo info, View view, View parent); 4287 } 4288 4289 /** 4290 * Map the operator over the shortcuts and widgets, return the first-non-null value. 4291 * 4292 * @param recurse true: iterate over folder children. false: op get the folders themselves. 4293 * @param op the operator to map over the shortcuts 4294 */ 4295 void mapOverItems(boolean recurse, ItemOperator op) { 4296 ArrayList<ShortcutAndWidgetContainer> containers = getAllShortcutAndWidgetContainers(); 4297 final int containerCount = containers.size(); 4298 for (int containerIdx = 0; containerIdx < containerCount; containerIdx++) { 4299 ShortcutAndWidgetContainer container = containers.get(containerIdx); 4300 // map over all the shortcuts on the workspace 4301 final int itemCount = container.getChildCount(); 4302 for (int itemIdx = 0; itemIdx < itemCount; itemIdx++) { 4303 View item = container.getChildAt(itemIdx); 4304 ItemInfo info = (ItemInfo) item.getTag(); 4305 if (recurse && info instanceof FolderInfo && item instanceof FolderIcon) { 4306 FolderIcon folder = (FolderIcon) item; 4307 ArrayList<View> folderChildren = folder.getFolder().getItemsInReadingOrder(); 4308 // map over all the children in the folder 4309 final int childCount = folderChildren.size(); 4310 for (int childIdx = 0; childIdx < childCount; childIdx++) { 4311 View child = folderChildren.get(childIdx); 4312 info = (ItemInfo) child.getTag(); 4313 if (op.evaluate(info, child, folder)) { 4314 return; 4315 } 4316 } 4317 } else { 4318 if (op.evaluate(info, item, null)) { 4319 return; 4320 } 4321 } 4322 } 4323 } 4324 } 4325 4326 void updateShortcuts(ArrayList<ShortcutInfo> shortcuts) { 4327 final HashSet<ShortcutInfo> updates = new HashSet<ShortcutInfo>(shortcuts); 4328 mapOverItems(MAP_RECURSE, new ItemOperator() { 4329 @Override 4330 public boolean evaluate(ItemInfo info, View v, View parent) { 4331 if (info instanceof ShortcutInfo && v instanceof BubbleTextView && 4332 updates.contains(info)) { 4333 ShortcutInfo si = (ShortcutInfo) info; 4334 BubbleTextView shortcut = (BubbleTextView) v; 4335 boolean oldPromiseState = getTextViewIcon(shortcut) 4336 instanceof PreloadIconDrawable; 4337 shortcut.applyFromShortcutInfo(si, mIconCache, true, 4338 si.isPromise() != oldPromiseState); 4339 4340 if (parent != null) { 4341 parent.invalidate(); 4342 } 4343 } 4344 // process all the shortcuts 4345 return false; 4346 } 4347 }); 4348 } 4349 4350 public void removeAbandonedPromise(String packageName, UserHandleCompat user) { 4351 ArrayList<String> packages = new ArrayList<String>(1); 4352 packages.add(packageName); 4353 LauncherModel.deletePackageFromDatabase(mLauncher, packageName, user); 4354 removeItemsByPackageName(packages, user); 4355 } 4356 4357 public void updateRestoreItems(final HashSet<ItemInfo> updates) { 4358 mapOverItems(MAP_RECURSE, new ItemOperator() { 4359 @Override 4360 public boolean evaluate(ItemInfo info, View v, View parent) { 4361 if (info instanceof ShortcutInfo && v instanceof BubbleTextView 4362 && updates.contains(info)) { 4363 ((BubbleTextView) v).applyState(false); 4364 } else if (v instanceof PendingAppWidgetHostView 4365 && info instanceof LauncherAppWidgetInfo 4366 && updates.contains(info)) { 4367 ((PendingAppWidgetHostView) v).applyState(); 4368 } 4369 // process all the shortcuts 4370 return false; 4371 } 4372 }); 4373 } 4374 4375 void widgetsRestored(ArrayList<LauncherAppWidgetInfo> changedInfo) { 4376 if (!changedInfo.isEmpty()) { 4377 DeferredWidgetRefresh widgetRefresh = new DeferredWidgetRefresh(changedInfo, 4378 mLauncher.getAppWidgetHost()); 4379 if (LauncherModel.getProviderInfo(getContext(), 4380 changedInfo.get(0).providerName, 4381 changedInfo.get(0).user) != null) { 4382 // Re-inflate the widgets which have changed status 4383 widgetRefresh.run(); 4384 } else { 4385 // widgetRefresh will automatically run when the packages are updated. 4386 // For now just update the progress bars 4387 for (LauncherAppWidgetInfo info : changedInfo) { 4388 if (info.hostView instanceof PendingAppWidgetHostView) { 4389 info.installProgress = 100; 4390 ((PendingAppWidgetHostView) info.hostView).applyState(); 4391 } 4392 } 4393 } 4394 } 4395 } 4396 4397 private void moveToScreen(int page, boolean animate) { 4398 if (!workspaceInModalState()) { 4399 if (animate) { 4400 snapToPage(page); 4401 } else { 4402 setCurrentPage(page); 4403 } 4404 } 4405 View child = getChildAt(page); 4406 if (child != null) { 4407 child.requestFocus(); 4408 } 4409 } 4410 4411 void moveToDefaultScreen(boolean animate) { 4412 moveToScreen(mDefaultPage, animate); 4413 } 4414 4415 void moveToCustomContentScreen(boolean animate) { 4416 if (hasCustomContent()) { 4417 int ccIndex = getPageIndexForScreenId(CUSTOM_CONTENT_SCREEN_ID); 4418 if (animate) { 4419 snapToPage(ccIndex); 4420 } else { 4421 setCurrentPage(ccIndex); 4422 } 4423 View child = getChildAt(ccIndex); 4424 if (child != null) { 4425 child.requestFocus(); 4426 } 4427 } 4428 exitWidgetResizeMode(); 4429 } 4430 4431 @Override 4432 protected PageIndicator.PageMarkerResources getPageIndicatorMarker(int pageIndex) { 4433 long screenId = getScreenIdForPageIndex(pageIndex); 4434 if (screenId == EXTRA_EMPTY_SCREEN_ID) { 4435 int count = mScreenOrder.size() - numCustomPages(); 4436 if (count > 1) { 4437 return new PageIndicator.PageMarkerResources(R.drawable.ic_pageindicator_current, 4438 R.drawable.ic_pageindicator_add); 4439 } 4440 } 4441 4442 return super.getPageIndicatorMarker(pageIndex); 4443 } 4444 4445 protected String getPageIndicatorDescription() { 4446 String settings = getResources().getString(R.string.settings_button_text); 4447 return getCurrentPageDescription() + ", " + settings; 4448 } 4449 4450 protected String getCurrentPageDescription() { 4451 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 4452 int delta = numCustomPages(); 4453 if (hasCustomContent() && getNextPage() == 0) { 4454 return mCustomContentDescription; 4455 } 4456 return String.format(getContext().getString(R.string.workspace_scroll_format), 4457 page + 1 - delta, getChildCount() - delta); 4458 } 4459 4460 public void getLocationInDragLayer(int[] loc) { 4461 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 4462 } 4463 4464 /** 4465 * Used as a workaround to ensure that the AppWidgetService receives the 4466 * PACKAGE_ADDED broadcast before updating widgets. 4467 */ 4468 private class DeferredWidgetRefresh implements Runnable { 4469 private final ArrayList<LauncherAppWidgetInfo> mInfos; 4470 private final LauncherAppWidgetHost mHost; 4471 private final Handler mHandler; 4472 4473 private boolean mRefreshPending; 4474 4475 public DeferredWidgetRefresh(ArrayList<LauncherAppWidgetInfo> infos, 4476 LauncherAppWidgetHost host) { 4477 mInfos = infos; 4478 mHost = host; 4479 mHandler = new Handler(); 4480 mRefreshPending = true; 4481 4482 mHost.addProviderChangeListener(this); 4483 // Force refresh after 10 seconds, if we don't get the provider changed event. 4484 // This could happen when the provider is no longer available in the app. 4485 mHandler.postDelayed(this, 10000); 4486 } 4487 4488 @Override 4489 public void run() { 4490 mHost.removeProviderChangeListener(this); 4491 mHandler.removeCallbacks(this); 4492 4493 if (!mRefreshPending) { 4494 return; 4495 } 4496 4497 mRefreshPending = false; 4498 4499 for (LauncherAppWidgetInfo info : mInfos) { 4500 if (info.hostView instanceof PendingAppWidgetHostView) { 4501 PendingAppWidgetHostView view = (PendingAppWidgetHostView) info.hostView; 4502 mLauncher.removeAppWidget(info); 4503 4504 CellLayout cl = (CellLayout) view.getParent().getParent(); 4505 // Remove the current widget 4506 cl.removeView(view); 4507 mLauncher.bindAppWidget(info); 4508 } 4509 } 4510 } 4511 } 4512} 4513