Workspace.java revision 0c9143d06b64ca40c64e66ddd65848deeead8131
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.launcher3; 18 19import android.animation.Animator; 20import android.animation.AnimatorListenerAdapter; 21import android.animation.LayoutTransition; 22import android.animation.ObjectAnimator; 23import android.animation.PropertyValuesHolder; 24import android.annotation.SuppressLint; 25import android.annotation.TargetApi; 26import android.app.WallpaperManager; 27import android.appwidget.AppWidgetHostView; 28import android.appwidget.AppWidgetProviderInfo; 29import android.content.ComponentName; 30import android.content.Context; 31import android.content.Intent; 32import android.content.SharedPreferences; 33import android.content.res.Resources; 34import android.content.res.TypedArray; 35import android.graphics.Bitmap; 36import android.graphics.Canvas; 37import android.graphics.Matrix; 38import android.graphics.Paint; 39import android.graphics.Point; 40import android.graphics.PointF; 41import android.graphics.Rect; 42import android.graphics.Region.Op; 43import android.graphics.drawable.Drawable; 44import android.os.AsyncTask; 45import android.os.Build; 46import android.os.Bundle; 47import android.os.Handler; 48import android.os.IBinder; 49import android.os.Parcelable; 50import android.util.AttributeSet; 51import android.util.Log; 52import android.util.SparseArray; 53import android.view.Choreographer; 54import android.view.Display; 55import android.view.MotionEvent; 56import android.view.View; 57import android.view.ViewGroup; 58import android.view.accessibility.AccessibilityManager; 59import android.view.animation.DecelerateInterpolator; 60import android.view.animation.Interpolator; 61import android.widget.TextView; 62 63import com.android.launcher3.FolderIcon.FolderRingAnimator; 64import com.android.launcher3.Launcher.CustomContentCallbacks; 65import com.android.launcher3.Launcher.LauncherOverlay; 66import com.android.launcher3.LauncherSettings.Favorites; 67import com.android.launcher3.UninstallDropTarget.UninstallSource; 68import com.android.launcher3.accessibility.LauncherAccessibilityDelegate; 69import com.android.launcher3.accessibility.LauncherAccessibilityDelegate.AccessibilityDragSource; 70import com.android.launcher3.accessibility.OverviewScreenAccessibilityDelegate; 71import com.android.launcher3.compat.UserHandleCompat; 72import com.android.launcher3.util.LongArrayMap; 73import com.android.launcher3.util.Thunk; 74import com.android.launcher3.util.WallpaperUtils; 75import com.android.launcher3.widget.PendingAddShortcutInfo; 76import com.android.launcher3.widget.PendingAddWidgetInfo; 77 78import java.util.ArrayList; 79import java.util.HashMap; 80import java.util.HashSet; 81import java.util.concurrent.atomic.AtomicInteger; 82 83/** 84 * The workspace is a wide area with a wallpaper and a finite number of pages. 85 * Each page contains a number of icons, folders or widgets the user can 86 * interact with. A workspace is meant to be used with a fixed width only. 87 */ 88public class Workspace extends PagedView 89 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 90 DragController.DragListener, LauncherTransitionable, ViewGroup.OnHierarchyChangeListener, 91 Insettable, UninstallSource, AccessibilityDragSource, Stats.LaunchSourceProvider { 92 private static final String TAG = "Launcher.Workspace"; 93 94 private static boolean ENFORCE_DRAG_EVENT_ORDER = false; 95 96 protected static final int SNAP_OFF_EMPTY_SCREEN_DURATION = 400; 97 protected static final int FADE_EMPTY_SCREEN_DURATION = 150; 98 99 private static final int ADJACENT_SCREEN_DROP_DURATION = 300; 100 101 static final boolean MAP_NO_RECURSE = false; 102 static final boolean MAP_RECURSE = true; 103 104 private static final long CUSTOM_CONTENT_GESTURE_DELAY = 200; 105 private long mTouchDownTime = -1; 106 private long mCustomContentShowTime = -1; 107 108 private LayoutTransition mLayoutTransition; 109 @Thunk final WallpaperManager mWallpaperManager; 110 @Thunk IBinder mWindowToken; 111 112 private int mOriginalDefaultPage; 113 private int mDefaultPage; 114 115 private ShortcutAndWidgetContainer mDragSourceInternal; 116 117 // The screen id used for the empty screen always present to the right. 118 final static long EXTRA_EMPTY_SCREEN_ID = -201; 119 private final static long CUSTOM_CONTENT_SCREEN_ID = -301; 120 121 @Thunk LongArrayMap<CellLayout> mWorkspaceScreens = new LongArrayMap<>(); 122 @Thunk ArrayList<Long> mScreenOrder = new ArrayList<Long>(); 123 124 @Thunk Runnable mRemoveEmptyScreenRunnable; 125 @Thunk boolean mDeferRemoveExtraEmptyScreen = false; 126 @Thunk boolean mAddNewPageOnDrag = true; 127 128 /** 129 * CellInfo for the cell that is currently being dragged 130 */ 131 private CellLayout.CellInfo mDragInfo; 132 133 /** 134 * Target drop area calculated during last acceptDrop call. 135 */ 136 @Thunk int[] mTargetCell = new int[2]; 137 private int mDragOverX = -1; 138 private int mDragOverY = -1; 139 140 static Rect mLandscapeCellLayoutMetrics = null; 141 static Rect mPortraitCellLayoutMetrics = null; 142 143 CustomContentCallbacks mCustomContentCallbacks; 144 boolean mCustomContentShowing; 145 private float mLastCustomContentScrollProgress = -1f; 146 private String mCustomContentDescription = ""; 147 148 /** 149 * The CellLayout that is currently being dragged over 150 */ 151 @Thunk CellLayout mDragTargetLayout = null; 152 /** 153 * The CellLayout that we will show as glowing 154 */ 155 private CellLayout mDragOverlappingLayout = null; 156 157 /** 158 * The CellLayout which will be dropped to 159 */ 160 private CellLayout mDropToLayout = null; 161 162 @Thunk Launcher mLauncher; 163 @Thunk IconCache mIconCache; 164 @Thunk DragController mDragController; 165 166 // These are temporary variables to prevent having to allocate a new object just to 167 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 168 private int[] mTempCell = new int[2]; 169 private int[] mTempPt = new int[2]; 170 private int[] mTempEstimate = new int[2]; 171 @Thunk float[] mDragViewVisualCenter = new float[2]; 172 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 173 private Matrix mTempInverseMatrix = new Matrix(); 174 175 private SpringLoadedDragController mSpringLoadedDragController; 176 private float mSpringLoadedShrinkFactor; 177 private float mOverviewModeShrinkFactor; 178 179 // State variable that indicates whether the pages are small (ie when you're 180 // in all apps or customize mode) 181 182 enum State { NORMAL, NORMAL_HIDDEN, SPRING_LOADED, OVERVIEW, OVERVIEW_HIDDEN}; 183 private State mState = State.NORMAL; 184 private boolean mIsSwitchingState = false; 185 186 boolean mAnimatingViewIntoPlace = false; 187 boolean mIsDragOccuring = false; 188 boolean mChildrenLayersEnabled = true; 189 190 private boolean mStripScreensOnPageStopMoving = false; 191 192 /** Is the user is dragging an item near the edge of a page? */ 193 private boolean mInScrollArea = false; 194 195 private HolographicOutlineHelper mOutlineHelper; 196 @Thunk Bitmap mDragOutline = null; 197 private static final Rect sTempRect = new Rect(); 198 private final int[] mTempXY = new int[2]; 199 private int[] mTempVisiblePagesRange = new int[2]; 200 private boolean mOverscrollEffectSet; 201 public static final int DRAG_BITMAP_PADDING = 2; 202 private boolean mWorkspaceFadeInAdjacentScreens; 203 204 WallpaperOffsetInterpolator mWallpaperOffset; 205 @Thunk boolean mWallpaperIsLiveWallpaper; 206 @Thunk int mNumPagesForWallpaperParallax; 207 @Thunk float mLastSetWallpaperOffsetSteps = 0; 208 209 @Thunk Runnable mDelayedResizeRunnable; 210 private Runnable mDelayedSnapToPageRunnable; 211 private Point mDisplaySize = new Point(); 212 213 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 214 private static final int FOLDER_CREATION_TIMEOUT = 0; 215 public static final int REORDER_TIMEOUT = 350; 216 private final Alarm mFolderCreationAlarm = new Alarm(); 217 private final Alarm mReorderAlarm = new Alarm(); 218 @Thunk FolderRingAnimator mDragFolderRingAnimator = null; 219 private FolderIcon mDragOverFolderIcon = null; 220 private boolean mCreateUserFolderOnDrop = false; 221 private boolean mAddToExistingFolderOnDrop = false; 222 private float mMaxDistanceForFolderCreation; 223 224 private final Canvas mCanvas = new Canvas(); 225 226 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 227 private float mXDown; 228 private float mYDown; 229 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 230 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 231 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 232 233 // Relating to the animation of items being dropped externally 234 public static final int ANIMATE_INTO_POSITION_AND_DISAPPEAR = 0; 235 public static final int ANIMATE_INTO_POSITION_AND_REMAIN = 1; 236 public static final int ANIMATE_INTO_POSITION_AND_RESIZE = 2; 237 public static final int COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION = 3; 238 public static final int CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION = 4; 239 240 // Related to dragging, folder creation and reordering 241 private static final int DRAG_MODE_NONE = 0; 242 private static final int DRAG_MODE_CREATE_FOLDER = 1; 243 private static final int DRAG_MODE_ADD_TO_FOLDER = 2; 244 private static final int DRAG_MODE_REORDER = 3; 245 private int mDragMode = DRAG_MODE_NONE; 246 @Thunk int mLastReorderX = -1; 247 @Thunk int mLastReorderY = -1; 248 249 private SparseArray<Parcelable> mSavedStates; 250 private final ArrayList<Integer> mRestoredPages = new ArrayList<Integer>(); 251 252 // These variables are used for storing the initial and final values during workspace animations 253 private int mSavedScrollX; 254 private float mSavedRotationY; 255 private float mSavedTranslationX; 256 257 private float mCurrentScale; 258 private float mTransitionProgress; 259 260 float mOverScrollEffect = 0f; 261 262 @Thunk Runnable mDeferredAction; 263 private boolean mDeferDropAfterUninstall; 264 private boolean mUninstallSuccessful; 265 266 // State related to Launcher Overlay 267 LauncherOverlay mLauncherOverlay; 268 boolean mScrollInteractionBegan; 269 boolean mStartedSendingScrollEvents; 270 boolean mShouldSendPageSettled; 271 int mLastOverlaySroll = 0; 272 273 // Handles workspace state transitions 274 private WorkspaceStateTransitionAnimation mStateTransitionAnimation; 275 276 private AccessibilityDelegate mPagesAccessibilityDelegate; 277 278 private final Runnable mBindPages = new Runnable() { 279 @Override 280 public void run() { 281 mLauncher.getModel().bindRemainingSynchronousPages(); 282 } 283 }; 284 285 /** 286 * Used to inflate the Workspace from XML. 287 * 288 * @param context The application's context. 289 * @param attrs The attributes set containing the Workspace's customization values. 290 */ 291 public Workspace(Context context, AttributeSet attrs) { 292 this(context, attrs, 0); 293 } 294 295 /** 296 * Used to inflate the Workspace from XML. 297 * 298 * @param context The application's context. 299 * @param attrs The attributes set containing the Workspace's customization values. 300 * @param defStyle Unused. 301 */ 302 public Workspace(Context context, AttributeSet attrs, int defStyle) { 303 super(context, attrs, defStyle); 304 305 mOutlineHelper = HolographicOutlineHelper.obtain(context); 306 307 mLauncher = (Launcher) context; 308 mStateTransitionAnimation = new WorkspaceStateTransitionAnimation(mLauncher, this); 309 final Resources res = getResources(); 310 DeviceProfile grid = mLauncher.getDeviceProfile(); 311 mWorkspaceFadeInAdjacentScreens = grid.shouldFadeAdjacentWorkspaceScreens(); 312 mFadeInAdjacentScreens = false; 313 mWallpaperManager = WallpaperManager.getInstance(context); 314 315 TypedArray a = context.obtainStyledAttributes(attrs, 316 R.styleable.Workspace, defStyle, 0); 317 mSpringLoadedShrinkFactor = 318 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 319 mOverviewModeShrinkFactor = grid.getOverviewModeScale(mIsRtl); 320 mOriginalDefaultPage = mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 321 a.recycle(); 322 323 setOnHierarchyChangeListener(this); 324 setHapticFeedbackEnabled(false); 325 326 initWorkspace(); 327 328 // Disable multitouch across the workspace/all apps/customize tray 329 setMotionEventSplittingEnabled(true); 330 } 331 332 @Override 333 public void setInsets(Rect insets) { 334 mInsets.set(insets); 335 336 CellLayout customScreen = getScreenWithId(CUSTOM_CONTENT_SCREEN_ID); 337 if (customScreen != null) { 338 View customContent = customScreen.getShortcutsAndWidgets().getChildAt(0); 339 if (customContent instanceof Insettable) { 340 ((Insettable) customContent).setInsets(mInsets); 341 } 342 } 343 } 344 345 // estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each 346 // dimension if unsuccessful 347 public int[] estimateItemSize(ItemInfo itemInfo, boolean springLoaded) { 348 int[] size = new int[2]; 349 if (getChildCount() > 0) { 350 // Use the first non-custom page to estimate the child position 351 CellLayout cl = (CellLayout) getChildAt(numCustomPages()); 352 Rect r = estimateItemPosition(cl, itemInfo, 0, 0, itemInfo.spanX, itemInfo.spanY); 353 size[0] = r.width(); 354 size[1] = r.height(); 355 if (springLoaded) { 356 size[0] *= mSpringLoadedShrinkFactor; 357 size[1] *= mSpringLoadedShrinkFactor; 358 } 359 return size; 360 } else { 361 size[0] = Integer.MAX_VALUE; 362 size[1] = Integer.MAX_VALUE; 363 return size; 364 } 365 } 366 367 public Rect estimateItemPosition(CellLayout cl, ItemInfo pendingInfo, 368 int hCell, int vCell, int hSpan, int vSpan) { 369 Rect r = new Rect(); 370 cl.cellToRect(hCell, vCell, hSpan, vSpan, r); 371 return r; 372 } 373 374 @Override 375 public void onDragStart(final DragSource source, Object info, int dragAction) { 376 if (ENFORCE_DRAG_EVENT_ORDER) { 377 enfoceDragParity("onDragStart", 0, 0); 378 } 379 380 mIsDragOccuring = true; 381 updateChildrenLayersEnabled(false); 382 mLauncher.lockScreenOrientation(); 383 mLauncher.onInteractionBegin(); 384 // Prevent any Un/InstallShortcutReceivers from updating the db while we are dragging 385 InstallShortcutReceiver.enableInstallQueue(); 386 387 if (mAddNewPageOnDrag) { 388 mDeferRemoveExtraEmptyScreen = false; 389 addExtraEmptyScreenOnDrag(); 390 } 391 } 392 393 public void setAddNewPageOnDrag(boolean addPage) { 394 mAddNewPageOnDrag = addPage; 395 } 396 397 public void deferRemoveExtraEmptyScreen() { 398 mDeferRemoveExtraEmptyScreen = true; 399 } 400 401 @Override 402 public void onDragEnd() { 403 if (ENFORCE_DRAG_EVENT_ORDER) { 404 enfoceDragParity("onDragEnd", 0, 0); 405 } 406 407 if (!mDeferRemoveExtraEmptyScreen) { 408 removeExtraEmptyScreen(true, mDragSourceInternal != null); 409 } 410 411 mIsDragOccuring = false; 412 updateChildrenLayersEnabled(false); 413 mLauncher.unlockScreenOrientation(false); 414 415 // Re-enable any Un/InstallShortcutReceiver and now process any queued items 416 InstallShortcutReceiver.disableAndFlushInstallQueue(getContext()); 417 418 mDragSourceInternal = null; 419 mLauncher.onInteractionEnd(); 420 } 421 422 /** 423 * Initializes various states for this workspace. 424 */ 425 protected void initWorkspace() { 426 mCurrentPage = mDefaultPage; 427 LauncherAppState app = LauncherAppState.getInstance(); 428 DeviceProfile grid = mLauncher.getDeviceProfile(); 429 mIconCache = app.getIconCache(); 430 setWillNotDraw(false); 431 setClipChildren(false); 432 setClipToPadding(false); 433 setChildrenDrawnWithCacheEnabled(true); 434 435 setMinScale(mOverviewModeShrinkFactor); 436 setupLayoutTransition(); 437 438 mWallpaperOffset = new WallpaperOffsetInterpolator(); 439 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 440 display.getSize(mDisplaySize); 441 442 mMaxDistanceForFolderCreation = (0.55f * grid.iconSizePx); 443 444 // Set the wallpaper dimensions when Launcher starts up 445 setWallpaperDimension(); 446 } 447 448 private void setupLayoutTransition() { 449 // We want to show layout transitions when pages are deleted, to close the gap. 450 mLayoutTransition = new LayoutTransition(); 451 mLayoutTransition.enableTransitionType(LayoutTransition.DISAPPEARING); 452 mLayoutTransition.enableTransitionType(LayoutTransition.CHANGE_DISAPPEARING); 453 mLayoutTransition.disableTransitionType(LayoutTransition.APPEARING); 454 mLayoutTransition.disableTransitionType(LayoutTransition.CHANGE_APPEARING); 455 setLayoutTransition(mLayoutTransition); 456 } 457 458 void enableLayoutTransitions() { 459 setLayoutTransition(mLayoutTransition); 460 } 461 void disableLayoutTransitions() { 462 setLayoutTransition(null); 463 } 464 465 @Override 466 public void onChildViewAdded(View parent, View child) { 467 if (!(child instanceof CellLayout)) { 468 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 469 } 470 CellLayout cl = ((CellLayout) child); 471 cl.setOnInterceptTouchListener(this); 472 cl.setClickable(true); 473 cl.setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_NO); 474 super.onChildViewAdded(parent, child); 475 } 476 477 protected boolean shouldDrawChild(View child) { 478 final CellLayout cl = (CellLayout) child; 479 return super.shouldDrawChild(child) && 480 (mIsSwitchingState || 481 cl.getShortcutsAndWidgets().getAlpha() > 0 || 482 cl.getBackgroundAlpha() > 0); 483 } 484 485 /** 486 * @return The open folder on the current screen, or null if there is none 487 */ 488 public Folder getOpenFolder() { 489 DragLayer dragLayer = mLauncher.getDragLayer(); 490 int count = dragLayer.getChildCount(); 491 for (int i = 0; i < count; i++) { 492 View child = dragLayer.getChildAt(i); 493 if (child instanceof Folder) { 494 Folder folder = (Folder) child; 495 if (folder.getInfo().opened) 496 return folder; 497 } 498 } 499 return null; 500 } 501 502 boolean isTouchActive() { 503 return mTouchState != TOUCH_STATE_REST; 504 } 505 506 public void removeAllWorkspaceScreens() { 507 // Disable all layout transitions before removing all pages to ensure that we don't get the 508 // transition animations competing with us changing the scroll when we add pages or the 509 // custom content screen 510 disableLayoutTransitions(); 511 512 // Since we increment the current page when we call addCustomContentPage via bindScreens 513 // (and other places), we need to adjust the current page back when we clear the pages 514 if (hasCustomContent()) { 515 removeCustomContentPage(); 516 } 517 518 // Remove the pages and clear the screen models 519 removeAllViews(); 520 mScreenOrder.clear(); 521 mWorkspaceScreens.clear(); 522 523 // Re-enable the layout transitions 524 enableLayoutTransitions(); 525 } 526 527 public long insertNewWorkspaceScreenBeforeEmptyScreen(long screenId) { 528 // Find the index to insert this view into. If the empty screen exists, then 529 // insert it before that. 530 int insertIndex = mScreenOrder.indexOf(EXTRA_EMPTY_SCREEN_ID); 531 if (insertIndex < 0) { 532 insertIndex = mScreenOrder.size(); 533 } 534 return insertNewWorkspaceScreen(screenId, insertIndex); 535 } 536 537 public long insertNewWorkspaceScreen(long screenId) { 538 return insertNewWorkspaceScreen(screenId, getChildCount()); 539 } 540 541 public long insertNewWorkspaceScreen(long screenId, int insertIndex) { 542 if (mWorkspaceScreens.containsKey(screenId)) { 543 throw new RuntimeException("Screen id " + screenId + " already exists!"); 544 } 545 546 // Inflate the cell layout, but do not add it automatically so that we can get the newly 547 // created CellLayout. 548 CellLayout newScreen = (CellLayout) mLauncher.getLayoutInflater().inflate( 549 R.layout.workspace_screen, this, false /* attachToRoot */); 550 551 newScreen.setOnLongClickListener(mLongClickListener); 552 newScreen.setOnClickListener(mLauncher); 553 newScreen.setSoundEffectsEnabled(false); 554 mWorkspaceScreens.put(screenId, newScreen); 555 mScreenOrder.add(insertIndex, screenId); 556 addView(newScreen, insertIndex); 557 558 LauncherAccessibilityDelegate delegate = 559 LauncherAppState.getInstance().getAccessibilityDelegate(); 560 if (delegate != null && delegate.isInAccessibleDrag()) { 561 newScreen.enableAccessibleDrag(true, CellLayout.WORKSPACE_ACCESSIBILITY_DRAG); 562 } 563 return screenId; 564 } 565 566 public void createCustomContentContainer() { 567 CellLayout customScreen = (CellLayout) 568 mLauncher.getLayoutInflater().inflate(R.layout.workspace_screen, this, false); 569 customScreen.disableDragTarget(); 570 571 mWorkspaceScreens.put(CUSTOM_CONTENT_SCREEN_ID, customScreen); 572 mScreenOrder.add(0, CUSTOM_CONTENT_SCREEN_ID); 573 574 // We want no padding on the custom content 575 customScreen.setPadding(0, 0, 0, 0); 576 577 addFullScreenPage(customScreen); 578 579 // Ensure that the current page and default page are maintained. 580 mDefaultPage = mOriginalDefaultPage + 1; 581 582 // Update the custom content hint 583 if (mRestorePage != INVALID_RESTORE_PAGE) { 584 mRestorePage = mRestorePage + 1; 585 } else { 586 setCurrentPage(getCurrentPage() + 1); 587 } 588 } 589 590 public void removeCustomContentPage() { 591 CellLayout customScreen = getScreenWithId(CUSTOM_CONTENT_SCREEN_ID); 592 if (customScreen == null) { 593 throw new RuntimeException("Expected custom content screen to exist"); 594 } 595 596 mWorkspaceScreens.remove(CUSTOM_CONTENT_SCREEN_ID); 597 mScreenOrder.remove(CUSTOM_CONTENT_SCREEN_ID); 598 removeView(customScreen); 599 600 if (mCustomContentCallbacks != null) { 601 mCustomContentCallbacks.onScrollProgressChanged(0); 602 mCustomContentCallbacks.onHide(); 603 } 604 605 mCustomContentCallbacks = null; 606 607 // Ensure that the current page and default page are maintained. 608 mDefaultPage = mOriginalDefaultPage - 1; 609 610 // Update the custom content hint 611 if (mRestorePage != INVALID_RESTORE_PAGE) { 612 mRestorePage = mRestorePage - 1; 613 } else { 614 setCurrentPage(getCurrentPage() - 1); 615 } 616 } 617 618 public void addToCustomContentPage(View customContent, CustomContentCallbacks callbacks, 619 String description) { 620 if (getPageIndexForScreenId(CUSTOM_CONTENT_SCREEN_ID) < 0) { 621 throw new RuntimeException("Expected custom content screen to exist"); 622 } 623 624 // Add the custom content to the full screen custom page 625 CellLayout customScreen = getScreenWithId(CUSTOM_CONTENT_SCREEN_ID); 626 int spanX = customScreen.getCountX(); 627 int spanY = customScreen.getCountY(); 628 CellLayout.LayoutParams lp = new CellLayout.LayoutParams(0, 0, spanX, spanY); 629 lp.canReorder = false; 630 lp.isFullscreen = true; 631 if (customContent instanceof Insettable) { 632 ((Insettable)customContent).setInsets(mInsets); 633 } 634 635 // Verify that the child is removed from any existing parent. 636 if (customContent.getParent() instanceof ViewGroup) { 637 ViewGroup parent = (ViewGroup) customContent.getParent(); 638 parent.removeView(customContent); 639 } 640 customScreen.removeAllViews(); 641 customScreen.addViewToCellLayout(customContent, 0, 0, lp, true); 642 mCustomContentDescription = description; 643 644 mCustomContentCallbacks = callbacks; 645 } 646 647 public void addExtraEmptyScreenOnDrag() { 648 boolean lastChildOnScreen = false; 649 boolean childOnFinalScreen = false; 650 651 // Cancel any pending removal of empty screen 652 mRemoveEmptyScreenRunnable = null; 653 654 if (mDragSourceInternal != null) { 655 if (mDragSourceInternal.getChildCount() == 1) { 656 lastChildOnScreen = true; 657 } 658 CellLayout cl = (CellLayout) mDragSourceInternal.getParent(); 659 if (indexOfChild(cl) == getChildCount() - 1) { 660 childOnFinalScreen = true; 661 } 662 } 663 664 // If this is the last item on the final screen 665 if (lastChildOnScreen && childOnFinalScreen) { 666 return; 667 } 668 if (!mWorkspaceScreens.containsKey(EXTRA_EMPTY_SCREEN_ID)) { 669 insertNewWorkspaceScreen(EXTRA_EMPTY_SCREEN_ID); 670 } 671 } 672 673 public boolean addExtraEmptyScreen() { 674 if (!mWorkspaceScreens.containsKey(EXTRA_EMPTY_SCREEN_ID)) { 675 insertNewWorkspaceScreen(EXTRA_EMPTY_SCREEN_ID); 676 return true; 677 } 678 return false; 679 } 680 681 private void convertFinalScreenToEmptyScreenIfNecessary() { 682 if (mLauncher.isWorkspaceLoading()) { 683 // Invalid and dangerous operation if workspace is loading 684 Launcher.addDumpLog(TAG, " - workspace loading, skip", true); 685 return; 686 } 687 688 if (hasExtraEmptyScreen() || mScreenOrder.size() == 0) return; 689 long finalScreenId = mScreenOrder.get(mScreenOrder.size() - 1); 690 691 if (finalScreenId == CUSTOM_CONTENT_SCREEN_ID) return; 692 CellLayout finalScreen = mWorkspaceScreens.get(finalScreenId); 693 694 // If the final screen is empty, convert it to the extra empty screen 695 if (finalScreen.getShortcutsAndWidgets().getChildCount() == 0 && 696 !finalScreen.isDropPending()) { 697 mWorkspaceScreens.remove(finalScreenId); 698 mScreenOrder.remove(finalScreenId); 699 700 // if this is the last non-custom content screen, convert it to the empty screen 701 mWorkspaceScreens.put(EXTRA_EMPTY_SCREEN_ID, finalScreen); 702 mScreenOrder.add(EXTRA_EMPTY_SCREEN_ID); 703 704 // Update the model if we have changed any screens 705 mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); 706 } 707 } 708 709 public void removeExtraEmptyScreen(final boolean animate, boolean stripEmptyScreens) { 710 removeExtraEmptyScreenDelayed(animate, null, 0, stripEmptyScreens); 711 } 712 713 public void removeExtraEmptyScreenDelayed(final boolean animate, final Runnable onComplete, 714 final int delay, final boolean stripEmptyScreens) { 715 if (mLauncher.isWorkspaceLoading()) { 716 // Don't strip empty screens if the workspace is still loading 717 Launcher.addDumpLog(TAG, " - workspace loading, skip", true); 718 return; 719 } 720 721 if (delay > 0) { 722 postDelayed(new Runnable() { 723 @Override 724 public void run() { 725 removeExtraEmptyScreenDelayed(animate, onComplete, 0, stripEmptyScreens); 726 } 727 }, delay); 728 return; 729 } 730 731 convertFinalScreenToEmptyScreenIfNecessary(); 732 if (hasExtraEmptyScreen()) { 733 int emptyIndex = mScreenOrder.indexOf(EXTRA_EMPTY_SCREEN_ID); 734 if (getNextPage() == emptyIndex) { 735 snapToPage(getNextPage() - 1, SNAP_OFF_EMPTY_SCREEN_DURATION); 736 fadeAndRemoveEmptyScreen(SNAP_OFF_EMPTY_SCREEN_DURATION, FADE_EMPTY_SCREEN_DURATION, 737 onComplete, stripEmptyScreens); 738 } else { 739 snapToPage(getNextPage(), 0); 740 fadeAndRemoveEmptyScreen(0, FADE_EMPTY_SCREEN_DURATION, 741 onComplete, stripEmptyScreens); 742 } 743 return; 744 } else if (stripEmptyScreens) { 745 // If we're not going to strip the empty screens after removing 746 // the extra empty screen, do it right away. 747 stripEmptyScreens(); 748 } 749 750 if (onComplete != null) { 751 onComplete.run(); 752 } 753 } 754 755 private void fadeAndRemoveEmptyScreen(int delay, int duration, final Runnable onComplete, 756 final boolean stripEmptyScreens) { 757 // XXX: Do we need to update LM workspace screens below? 758 PropertyValuesHolder alpha = PropertyValuesHolder.ofFloat("alpha", 0f); 759 PropertyValuesHolder bgAlpha = PropertyValuesHolder.ofFloat("backgroundAlpha", 0f); 760 761 final CellLayout cl = mWorkspaceScreens.get(EXTRA_EMPTY_SCREEN_ID); 762 763 mRemoveEmptyScreenRunnable = new Runnable() { 764 @Override 765 public void run() { 766 if (hasExtraEmptyScreen()) { 767 mWorkspaceScreens.remove(EXTRA_EMPTY_SCREEN_ID); 768 mScreenOrder.remove(EXTRA_EMPTY_SCREEN_ID); 769 removeView(cl); 770 if (stripEmptyScreens) { 771 stripEmptyScreens(); 772 } 773 } 774 } 775 }; 776 777 ObjectAnimator oa = ObjectAnimator.ofPropertyValuesHolder(cl, alpha, bgAlpha); 778 oa.setDuration(duration); 779 oa.setStartDelay(delay); 780 oa.addListener(new AnimatorListenerAdapter() { 781 @Override 782 public void onAnimationEnd(Animator animation) { 783 if (mRemoveEmptyScreenRunnable != null) { 784 mRemoveEmptyScreenRunnable.run(); 785 } 786 if (onComplete != null) { 787 onComplete.run(); 788 } 789 } 790 }); 791 oa.start(); 792 } 793 794 public boolean hasExtraEmptyScreen() { 795 int nScreens = getChildCount(); 796 nScreens = nScreens - numCustomPages(); 797 return mWorkspaceScreens.containsKey(EXTRA_EMPTY_SCREEN_ID) && nScreens > 1; 798 } 799 800 public long commitExtraEmptyScreen() { 801 if (mLauncher.isWorkspaceLoading()) { 802 // Invalid and dangerous operation if workspace is loading 803 Launcher.addDumpLog(TAG, " - workspace loading, skip", true); 804 return -1; 805 } 806 807 int index = getPageIndexForScreenId(EXTRA_EMPTY_SCREEN_ID); 808 CellLayout cl = mWorkspaceScreens.get(EXTRA_EMPTY_SCREEN_ID); 809 mWorkspaceScreens.remove(EXTRA_EMPTY_SCREEN_ID); 810 mScreenOrder.remove(EXTRA_EMPTY_SCREEN_ID); 811 812 long newId = LauncherAppState.getLauncherProvider().generateNewScreenId(); 813 mWorkspaceScreens.put(newId, cl); 814 mScreenOrder.add(newId); 815 816 // Update the page indicator marker 817 if (getPageIndicator() != null) { 818 getPageIndicator().updateMarker(index, getPageIndicatorMarker(index)); 819 } 820 821 // Update the model for the new screen 822 mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); 823 824 return newId; 825 } 826 827 public CellLayout getScreenWithId(long screenId) { 828 CellLayout layout = mWorkspaceScreens.get(screenId); 829 return layout; 830 } 831 832 public long getIdForScreen(CellLayout layout) { 833 int index = mWorkspaceScreens.indexOfValue(layout); 834 if (index != -1) { 835 return mWorkspaceScreens.keyAt(index); 836 } 837 return -1; 838 } 839 840 public int getPageIndexForScreenId(long screenId) { 841 return indexOfChild(mWorkspaceScreens.get(screenId)); 842 } 843 844 public long getScreenIdForPageIndex(int index) { 845 if (0 <= index && index < mScreenOrder.size()) { 846 return mScreenOrder.get(index); 847 } 848 return -1; 849 } 850 851 public ArrayList<Long> getScreenOrder() { 852 return mScreenOrder; 853 } 854 855 public void stripEmptyScreens() { 856 if (mLauncher.isWorkspaceLoading()) { 857 // Don't strip empty screens if the workspace is still loading. 858 // This is dangerous and can result in data loss. 859 Launcher.addDumpLog(TAG, " - workspace loading, skip", true); 860 return; 861 } 862 863 if (isPageMoving()) { 864 mStripScreensOnPageStopMoving = true; 865 return; 866 } 867 868 int currentPage = getNextPage(); 869 ArrayList<Long> removeScreens = new ArrayList<Long>(); 870 int total = mWorkspaceScreens.size(); 871 for (int i = 0; i < total; i++) { 872 long id = mWorkspaceScreens.keyAt(i); 873 CellLayout cl = mWorkspaceScreens.valueAt(i); 874 if (id >= 0 && cl.getShortcutsAndWidgets().getChildCount() == 0) { 875 removeScreens.add(id); 876 } 877 } 878 879 // We enforce at least one page to add new items to. In the case that we remove the last 880 // such screen, we convert the last screen to the empty screen 881 int minScreens = 1 + numCustomPages(); 882 883 int pageShift = 0; 884 for (Long id: removeScreens) { 885 CellLayout cl = mWorkspaceScreens.get(id); 886 mWorkspaceScreens.remove(id); 887 mScreenOrder.remove(id); 888 889 if (getChildCount() > minScreens) { 890 if (indexOfChild(cl) < currentPage) { 891 pageShift++; 892 } 893 removeView(cl); 894 } else { 895 // if this is the last non-custom content screen, convert it to the empty screen 896 mRemoveEmptyScreenRunnable = null; 897 mWorkspaceScreens.put(EXTRA_EMPTY_SCREEN_ID, cl); 898 mScreenOrder.add(EXTRA_EMPTY_SCREEN_ID); 899 } 900 } 901 902 if (!removeScreens.isEmpty()) { 903 // Update the model if we have changed any screens 904 mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); 905 } 906 907 if (pageShift >= 0) { 908 setCurrentPage(currentPage - pageShift); 909 } 910 } 911 912 // See implementation for parameter definition. 913 void addInScreen(View child, long container, long screenId, 914 int x, int y, int spanX, int spanY) { 915 addInScreen(child, container, screenId, x, y, spanX, spanY, false, false); 916 } 917 918 // At bind time, we use the rank (screenId) to compute x and y for hotseat items. 919 // See implementation for parameter definition. 920 void addInScreenFromBind(View child, long container, long screenId, int x, int y, 921 int spanX, int spanY) { 922 addInScreen(child, container, screenId, x, y, spanX, spanY, false, true); 923 } 924 925 // See implementation for parameter definition. 926 void addInScreen(View child, long container, long screenId, int x, int y, int spanX, int spanY, 927 boolean insert) { 928 addInScreen(child, container, screenId, x, y, spanX, spanY, insert, false); 929 } 930 931 /** 932 * Adds the specified child in the specified screen. The position and dimension of 933 * the child are defined by x, y, spanX and spanY. 934 * 935 * @param child The child to add in one of the workspace's screens. 936 * @param screenId The screen in which to add the child. 937 * @param x The X position of the child in the screen's grid. 938 * @param y The Y position of the child in the screen's grid. 939 * @param spanX The number of cells spanned horizontally by the child. 940 * @param spanY The number of cells spanned vertically by the child. 941 * @param insert When true, the child is inserted at the beginning of the children list. 942 * @param computeXYFromRank When true, we use the rank (stored in screenId) to compute 943 * the x and y position in which to place hotseat items. Otherwise 944 * we use the x and y position to compute the rank. 945 */ 946 void addInScreen(View child, long container, long screenId, int x, int y, int spanX, int spanY, 947 boolean insert, boolean computeXYFromRank) { 948 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 949 if (getScreenWithId(screenId) == null) { 950 Log.e(TAG, "Skipping child, screenId " + screenId + " not found"); 951 // DEBUGGING - Print out the stack trace to see where we are adding from 952 new Throwable().printStackTrace(); 953 return; 954 } 955 } 956 if (screenId == EXTRA_EMPTY_SCREEN_ID) { 957 // This should never happen 958 throw new RuntimeException("Screen id should not be EXTRA_EMPTY_SCREEN_ID"); 959 } 960 961 final CellLayout layout; 962 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 963 layout = mLauncher.getHotseat().getLayout(); 964 child.setOnKeyListener(new HotseatIconKeyEventListener()); 965 966 // Hide folder title in the hotseat 967 if (child instanceof FolderIcon) { 968 ((FolderIcon) child).setTextVisible(false); 969 } 970 971 if (computeXYFromRank) { 972 x = mLauncher.getHotseat().getCellXFromOrder((int) screenId); 973 y = mLauncher.getHotseat().getCellYFromOrder((int) screenId); 974 } else { 975 screenId = mLauncher.getHotseat().getOrderInHotseat(x, y); 976 } 977 } else { 978 // Show folder title if not in the hotseat 979 if (child instanceof FolderIcon) { 980 ((FolderIcon) child).setTextVisible(true); 981 } 982 layout = getScreenWithId(screenId); 983 child.setOnKeyListener(new IconKeyEventListener()); 984 } 985 986 ViewGroup.LayoutParams genericLp = child.getLayoutParams(); 987 CellLayout.LayoutParams lp; 988 if (genericLp == null || !(genericLp instanceof CellLayout.LayoutParams)) { 989 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 990 } else { 991 lp = (CellLayout.LayoutParams) genericLp; 992 lp.cellX = x; 993 lp.cellY = y; 994 lp.cellHSpan = spanX; 995 lp.cellVSpan = spanY; 996 } 997 998 if (spanX < 0 && spanY < 0) { 999 lp.isLockedToGrid = false; 1000 } 1001 1002 // Get the canonical child id to uniquely represent this view in this screen 1003 ItemInfo info = (ItemInfo) child.getTag(); 1004 int childId = mLauncher.getViewIdForItem(info); 1005 1006 boolean markCellsAsOccupied = !(child instanceof Folder); 1007 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 1008 // TODO: This branch occurs when the workspace is adding views 1009 // outside of the defined grid 1010 // maybe we should be deleting these items from the LauncherModel? 1011 Launcher.addDumpLog(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout", true); 1012 } 1013 1014 if (!(child instanceof Folder)) { 1015 child.setHapticFeedbackEnabled(false); 1016 child.setOnLongClickListener(mLongClickListener); 1017 } 1018 if (child instanceof DropTarget) { 1019 mDragController.addDropTarget((DropTarget) child); 1020 } 1021 } 1022 1023 /** 1024 * Called directly from a CellLayout (not by the framework), after we've been added as a 1025 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 1026 * that it should intercept touch events, which is not something that is normally supported. 1027 */ 1028 @SuppressLint("ClickableViewAccessibility") 1029 @Override 1030 public boolean onTouch(View v, MotionEvent event) { 1031 return (workspaceInModalState() || !isFinishedSwitchingState()) 1032 || (!workspaceInModalState() && indexOfChild(v) != mCurrentPage); 1033 } 1034 1035 public boolean isSwitchingState() { 1036 return mIsSwitchingState; 1037 } 1038 1039 /** This differs from isSwitchingState in that we take into account how far the transition 1040 * has completed. */ 1041 public boolean isFinishedSwitchingState() { 1042 return !mIsSwitchingState || (mTransitionProgress > 0.5f); 1043 } 1044 1045 protected void onWindowVisibilityChanged (int visibility) { 1046 mLauncher.onWindowVisibilityChanged(visibility); 1047 } 1048 1049 @Override 1050 public boolean dispatchUnhandledMove(View focused, int direction) { 1051 if (workspaceInModalState() || !isFinishedSwitchingState()) { 1052 // when the home screens are shrunken, shouldn't allow side-scrolling 1053 return false; 1054 } 1055 return super.dispatchUnhandledMove(focused, direction); 1056 } 1057 1058 @Override 1059 public boolean onInterceptTouchEvent(MotionEvent ev) { 1060 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 1061 case MotionEvent.ACTION_DOWN: 1062 mXDown = ev.getX(); 1063 mYDown = ev.getY(); 1064 mTouchDownTime = System.currentTimeMillis(); 1065 break; 1066 case MotionEvent.ACTION_POINTER_UP: 1067 case MotionEvent.ACTION_UP: 1068 if (mTouchState == TOUCH_STATE_REST) { 1069 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 1070 if (currentPage != null) { 1071 onWallpaperTap(ev); 1072 } 1073 } 1074 } 1075 return super.onInterceptTouchEvent(ev); 1076 } 1077 1078 @Override 1079 public boolean onGenericMotionEvent(MotionEvent event) { 1080 // Ignore pointer scroll events if the custom content doesn't allow scrolling. 1081 if ((getScreenIdForPageIndex(getCurrentPage()) == CUSTOM_CONTENT_SCREEN_ID) 1082 && (mCustomContentCallbacks != null) 1083 && !mCustomContentCallbacks.isScrollingAllowed()) { 1084 return false; 1085 } 1086 return super.onGenericMotionEvent(event); 1087 } 1088 1089 protected void reinflateWidgetsIfNecessary() { 1090 final int clCount = getChildCount(); 1091 for (int i = 0; i < clCount; i++) { 1092 CellLayout cl = (CellLayout) getChildAt(i); 1093 ShortcutAndWidgetContainer swc = cl.getShortcutsAndWidgets(); 1094 final int itemCount = swc.getChildCount(); 1095 for (int j = 0; j < itemCount; j++) { 1096 View v = swc.getChildAt(j); 1097 1098 if (v != null && v.getTag() instanceof LauncherAppWidgetInfo) { 1099 LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) v.getTag(); 1100 LauncherAppWidgetHostView lahv = (LauncherAppWidgetHostView) info.hostView; 1101 if (lahv != null && lahv.isReinflateRequired()) { 1102 mLauncher.removeAppWidget(info); 1103 // Remove the current widget which is inflated with the wrong orientation 1104 cl.removeView(lahv); 1105 mLauncher.bindAppWidget(info); 1106 } 1107 } 1108 } 1109 } 1110 } 1111 1112 @Override 1113 protected void determineScrollingStart(MotionEvent ev) { 1114 if (!isFinishedSwitchingState()) return; 1115 1116 float deltaX = ev.getX() - mXDown; 1117 float absDeltaX = Math.abs(deltaX); 1118 float absDeltaY = Math.abs(ev.getY() - mYDown); 1119 1120 if (Float.compare(absDeltaX, 0f) == 0) return; 1121 1122 float slope = absDeltaY / absDeltaX; 1123 float theta = (float) Math.atan(slope); 1124 1125 if (absDeltaX > mTouchSlop || absDeltaY > mTouchSlop) { 1126 cancelCurrentPageLongPress(); 1127 } 1128 1129 boolean passRightSwipesToCustomContent = 1130 (mTouchDownTime - mCustomContentShowTime) > CUSTOM_CONTENT_GESTURE_DELAY; 1131 1132 boolean swipeInIgnoreDirection = mIsRtl ? deltaX < 0 : deltaX > 0; 1133 boolean onCustomContentScreen = 1134 getScreenIdForPageIndex(getCurrentPage()) == CUSTOM_CONTENT_SCREEN_ID; 1135 if (swipeInIgnoreDirection && onCustomContentScreen && passRightSwipesToCustomContent) { 1136 // Pass swipes to the right to the custom content page. 1137 return; 1138 } 1139 1140 if (onCustomContentScreen && (mCustomContentCallbacks != null) 1141 && !mCustomContentCallbacks.isScrollingAllowed()) { 1142 // Don't allow workspace scrolling if the current custom content screen doesn't allow 1143 // scrolling. 1144 return; 1145 } 1146 1147 if (theta > MAX_SWIPE_ANGLE) { 1148 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 1149 return; 1150 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 1151 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 1152 // increase the touch slop to make it harder to begin scrolling the workspace. This 1153 // results in vertically scrolling widgets to more easily. The higher the angle, the 1154 // more we increase touch slop. 1155 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 1156 float extraRatio = (float) 1157 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 1158 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 1159 } else { 1160 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 1161 super.determineScrollingStart(ev); 1162 } 1163 } 1164 1165 protected void onPageBeginMoving() { 1166 super.onPageBeginMoving(); 1167 1168 if (isHardwareAccelerated()) { 1169 updateChildrenLayersEnabled(false); 1170 } else { 1171 if (mNextPage != INVALID_PAGE) { 1172 // we're snapping to a particular screen 1173 enableChildrenCache(mCurrentPage, mNextPage); 1174 } else { 1175 // this is when user is actively dragging a particular screen, they might 1176 // swipe it either left or right (but we won't advance by more than one screen) 1177 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 1178 } 1179 } 1180 } 1181 1182 protected void onPageEndMoving() { 1183 super.onPageEndMoving(); 1184 1185 if (isHardwareAccelerated()) { 1186 updateChildrenLayersEnabled(false); 1187 } else { 1188 clearChildrenCache(); 1189 } 1190 1191 if (mDragController.isDragging()) { 1192 if (workspaceInModalState()) { 1193 // If we are in springloaded mode, then force an event to check if the current touch 1194 // is under a new page (to scroll to) 1195 mDragController.forceTouchMove(); 1196 } 1197 } 1198 1199 if (mDelayedResizeRunnable != null) { 1200 mDelayedResizeRunnable.run(); 1201 mDelayedResizeRunnable = null; 1202 } 1203 1204 if (mDelayedSnapToPageRunnable != null) { 1205 mDelayedSnapToPageRunnable.run(); 1206 mDelayedSnapToPageRunnable = null; 1207 } 1208 if (mStripScreensOnPageStopMoving) { 1209 stripEmptyScreens(); 1210 mStripScreensOnPageStopMoving = false; 1211 } 1212 1213 if (mShouldSendPageSettled) { 1214 mLauncherOverlay.onScrollSettled(); 1215 mShouldSendPageSettled = false; 1216 } 1217 } 1218 1219 protected void onScrollInteractionBegin() { 1220 super.onScrollInteractionEnd(); 1221 mScrollInteractionBegan = true; 1222 } 1223 1224 protected void onScrollInteractionEnd() { 1225 super.onScrollInteractionEnd(); 1226 mScrollInteractionBegan = false; 1227 if (mStartedSendingScrollEvents) { 1228 mStartedSendingScrollEvents = false; 1229 mLauncherOverlay.onScrollInteractionEnd(); 1230 } 1231 } 1232 1233 public void setLauncherOverlay(LauncherOverlay overlay) { 1234 mLauncherOverlay = overlay; 1235 } 1236 1237 @Override 1238 protected void overScroll(float amount) { 1239 boolean shouldOverScroll = (amount <= 0 && (!hasCustomContent() || mIsRtl)) || 1240 (amount >= 0 && (!hasCustomContent() || !mIsRtl)); 1241 1242 boolean shouldScrollOverlay = mLauncherOverlay != null && 1243 ((amount <= 0 && !mIsRtl) || (amount >= 0 && mIsRtl)); 1244 1245 boolean shouldZeroOverlay = mLauncherOverlay != null && mLastOverlaySroll != 0 && 1246 ((amount >= 0 && !mIsRtl) || (amount <= 0 && mIsRtl)); 1247 1248 if (shouldScrollOverlay) { 1249 if (!mStartedSendingScrollEvents && mScrollInteractionBegan) { 1250 mStartedSendingScrollEvents = true; 1251 mLauncherOverlay.onScrollInteractionBegin(); 1252 mShouldSendPageSettled = true; 1253 } 1254 int screenSize = getViewportWidth(); 1255 float f = (amount / screenSize); 1256 1257 int progress = (int) Math.abs((f * 100)); 1258 1259 mLastOverlaySroll = progress; 1260 mLauncherOverlay.onScrollChange(progress, mIsRtl); 1261 } else if (shouldOverScroll) { 1262 dampedOverScroll(amount); 1263 mOverScrollEffect = acceleratedOverFactor(amount); 1264 } else { 1265 mOverScrollEffect = 0; 1266 } 1267 1268 if (shouldZeroOverlay) { 1269 mLauncherOverlay.onScrollChange(0, mIsRtl); 1270 } 1271 } 1272 1273 @Override 1274 protected void notifyPageSwitchListener() { 1275 super.notifyPageSwitchListener(); 1276 1277 if (hasCustomContent() && getNextPage() == 0 && !mCustomContentShowing) { 1278 mCustomContentShowing = true; 1279 if (mCustomContentCallbacks != null) { 1280 mCustomContentCallbacks.onShow(false); 1281 mCustomContentShowTime = System.currentTimeMillis(); 1282 } 1283 } else if (hasCustomContent() && getNextPage() != 0 && mCustomContentShowing) { 1284 mCustomContentShowing = false; 1285 if (mCustomContentCallbacks != null) { 1286 mCustomContentCallbacks.onHide(); 1287 } 1288 } 1289 } 1290 1291 protected CustomContentCallbacks getCustomContentCallbacks() { 1292 return mCustomContentCallbacks; 1293 } 1294 1295 protected void setWallpaperDimension() { 1296 new AsyncTask<Void, Void, Void>() { 1297 public Void doInBackground(Void ... args) { 1298 String spKey = LauncherFiles.WALLPAPER_CROP_PREFERENCES_KEY; 1299 SharedPreferences sp = 1300 mLauncher.getSharedPreferences(spKey, Context.MODE_MULTI_PROCESS); 1301 WallpaperUtils.suggestWallpaperDimension(mLauncher.getResources(), 1302 sp, mLauncher.getWindowManager(), mWallpaperManager, 1303 mLauncher.overrideWallpaperDimensions()); 1304 return null; 1305 } 1306 }.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, (Void) null); 1307 } 1308 1309 protected void snapToPage(int whichPage, Runnable r) { 1310 snapToPage(whichPage, SLOW_PAGE_SNAP_ANIMATION_DURATION, r); 1311 } 1312 1313 protected void snapToPage(int whichPage, int duration, Runnable r) { 1314 if (mDelayedSnapToPageRunnable != null) { 1315 mDelayedSnapToPageRunnable.run(); 1316 } 1317 mDelayedSnapToPageRunnable = r; 1318 snapToPage(whichPage, duration); 1319 } 1320 1321 public void snapToScreenId(long screenId) { 1322 snapToScreenId(screenId, null); 1323 } 1324 1325 protected void snapToScreenId(long screenId, Runnable r) { 1326 snapToPage(getPageIndexForScreenId(screenId), r); 1327 } 1328 1329 class WallpaperOffsetInterpolator implements Choreographer.FrameCallback { 1330 float mFinalOffset = 0.0f; 1331 float mCurrentOffset = 0.5f; // to force an initial update 1332 boolean mWaitingForUpdate; 1333 Choreographer mChoreographer; 1334 Interpolator mInterpolator; 1335 boolean mAnimating; 1336 long mAnimationStartTime; 1337 float mAnimationStartOffset; 1338 private final int ANIMATION_DURATION = 250; 1339 // Don't use all the wallpaper for parallax until you have at least this many pages 1340 private final int MIN_PARALLAX_PAGE_SPAN = 3; 1341 int mNumScreens; 1342 1343 public WallpaperOffsetInterpolator() { 1344 mChoreographer = Choreographer.getInstance(); 1345 mInterpolator = new DecelerateInterpolator(1.5f); 1346 } 1347 1348 @Override 1349 public void doFrame(long frameTimeNanos) { 1350 updateOffset(false); 1351 } 1352 1353 private void updateOffset(boolean force) { 1354 if (mWaitingForUpdate || force) { 1355 mWaitingForUpdate = false; 1356 if (computeScrollOffset() && mWindowToken != null) { 1357 try { 1358 mWallpaperManager.setWallpaperOffsets(mWindowToken, 1359 mWallpaperOffset.getCurrX(), 0.5f); 1360 setWallpaperOffsetSteps(); 1361 } catch (IllegalArgumentException e) { 1362 Log.e(TAG, "Error updating wallpaper offset: " + e); 1363 } 1364 } 1365 } 1366 } 1367 1368 public boolean computeScrollOffset() { 1369 final float oldOffset = mCurrentOffset; 1370 if (mAnimating) { 1371 long durationSinceAnimation = System.currentTimeMillis() - mAnimationStartTime; 1372 float t0 = durationSinceAnimation / (float) ANIMATION_DURATION; 1373 float t1 = mInterpolator.getInterpolation(t0); 1374 mCurrentOffset = mAnimationStartOffset + 1375 (mFinalOffset - mAnimationStartOffset) * t1; 1376 mAnimating = durationSinceAnimation < ANIMATION_DURATION; 1377 } else { 1378 mCurrentOffset = mFinalOffset; 1379 } 1380 1381 if (Math.abs(mCurrentOffset - mFinalOffset) > 0.0000001f) { 1382 scheduleUpdate(); 1383 } 1384 if (Math.abs(oldOffset - mCurrentOffset) > 0.0000001f) { 1385 return true; 1386 } 1387 return false; 1388 } 1389 1390 private float wallpaperOffsetForCurrentScroll() { 1391 // TODO: do different behavior if it's a live wallpaper? 1392 // Don't use up all the wallpaper parallax until you have at least 1393 // MIN_PARALLAX_PAGE_SPAN pages 1394 int numScrollingPages = getNumScreensExcludingEmptyAndCustom(); 1395 int parallaxPageSpan; 1396 if (mWallpaperIsLiveWallpaper) { 1397 parallaxPageSpan = numScrollingPages - 1; 1398 } else { 1399 parallaxPageSpan = Math.max(MIN_PARALLAX_PAGE_SPAN, numScrollingPages - 1); 1400 } 1401 mNumPagesForWallpaperParallax = parallaxPageSpan; 1402 1403 if (getChildCount() <= 1) { 1404 if (mIsRtl) { 1405 return 1 - 1.0f/mNumPagesForWallpaperParallax; 1406 } 1407 return 0; 1408 } 1409 1410 // Exclude the leftmost page 1411 int emptyExtraPages = numEmptyScreensToIgnore(); 1412 int firstIndex = numCustomPages(); 1413 // Exclude the last extra empty screen (if we have > MIN_PARALLAX_PAGE_SPAN pages) 1414 int lastIndex = getChildCount() - 1 - emptyExtraPages; 1415 if (mIsRtl) { 1416 int temp = firstIndex; 1417 firstIndex = lastIndex; 1418 lastIndex = temp; 1419 } 1420 1421 int firstPageScrollX = getScrollForPage(firstIndex); 1422 int scrollRange = getScrollForPage(lastIndex) - firstPageScrollX; 1423 if (scrollRange == 0) { 1424 return 0; 1425 } else { 1426 // Sometimes the left parameter of the pages is animated during a layout transition; 1427 // this parameter offsets it to keep the wallpaper from animating as well 1428 int adjustedScroll = 1429 getScrollX() - firstPageScrollX - getLayoutTransitionOffsetForPage(0); 1430 float offset = Math.min(1, adjustedScroll / (float) scrollRange); 1431 offset = Math.max(0, offset); 1432 1433 // On RTL devices, push the wallpaper offset to the right if we don't have enough 1434 // pages (ie if numScrollingPages < MIN_PARALLAX_PAGE_SPAN) 1435 if (!mWallpaperIsLiveWallpaper && numScrollingPages < MIN_PARALLAX_PAGE_SPAN 1436 && mIsRtl) { 1437 return offset * (parallaxPageSpan - numScrollingPages + 1) / parallaxPageSpan; 1438 } 1439 return offset * (numScrollingPages - 1) / parallaxPageSpan; 1440 } 1441 } 1442 1443 private int numEmptyScreensToIgnore() { 1444 int numScrollingPages = getChildCount() - numCustomPages(); 1445 if (numScrollingPages >= MIN_PARALLAX_PAGE_SPAN && hasExtraEmptyScreen()) { 1446 return 1; 1447 } else { 1448 return 0; 1449 } 1450 } 1451 1452 private int getNumScreensExcludingEmptyAndCustom() { 1453 int numScrollingPages = getChildCount() - numEmptyScreensToIgnore() - numCustomPages(); 1454 return numScrollingPages; 1455 } 1456 1457 public void syncWithScroll() { 1458 float offset = wallpaperOffsetForCurrentScroll(); 1459 mWallpaperOffset.setFinalX(offset); 1460 updateOffset(true); 1461 } 1462 1463 public float getCurrX() { 1464 return mCurrentOffset; 1465 } 1466 1467 public float getFinalX() { 1468 return mFinalOffset; 1469 } 1470 1471 private void animateToFinal() { 1472 mAnimating = true; 1473 mAnimationStartOffset = mCurrentOffset; 1474 mAnimationStartTime = System.currentTimeMillis(); 1475 } 1476 1477 private void setWallpaperOffsetSteps() { 1478 // Set wallpaper offset steps (1 / (number of screens - 1)) 1479 float xOffset = 1.0f / mNumPagesForWallpaperParallax; 1480 if (xOffset != mLastSetWallpaperOffsetSteps) { 1481 mWallpaperManager.setWallpaperOffsetSteps(xOffset, 1.0f); 1482 mLastSetWallpaperOffsetSteps = xOffset; 1483 } 1484 } 1485 1486 public void setFinalX(float x) { 1487 scheduleUpdate(); 1488 mFinalOffset = Math.max(0f, Math.min(x, 1.0f)); 1489 if (getNumScreensExcludingEmptyAndCustom() != mNumScreens) { 1490 if (mNumScreens > 0) { 1491 // Don't animate if we're going from 0 screens 1492 animateToFinal(); 1493 } 1494 mNumScreens = getNumScreensExcludingEmptyAndCustom(); 1495 } 1496 } 1497 1498 private void scheduleUpdate() { 1499 if (!mWaitingForUpdate) { 1500 mChoreographer.postFrameCallback(this); 1501 mWaitingForUpdate = true; 1502 } 1503 } 1504 1505 public void jumpToFinal() { 1506 mCurrentOffset = mFinalOffset; 1507 } 1508 } 1509 1510 @Override 1511 public void computeScroll() { 1512 super.computeScroll(); 1513 mWallpaperOffset.syncWithScroll(); 1514 } 1515 1516 @Override 1517 public void announceForAccessibility(CharSequence text) { 1518 // Don't announce if apps is on top of us. 1519 if (!mLauncher.isAppsViewVisible()) { 1520 super.announceForAccessibility(text); 1521 } 1522 } 1523 1524 public void showOutlinesTemporarily() { 1525 if (!mIsPageMoving && !isTouchActive()) { 1526 snapToPage(mCurrentPage); 1527 } 1528 } 1529 1530 float backgroundAlphaInterpolator(float r) { 1531 float pivotA = 0.1f; 1532 float pivotB = 0.4f; 1533 if (r < pivotA) { 1534 return 0; 1535 } else if (r > pivotB) { 1536 return 1.0f; 1537 } else { 1538 return (r - pivotA)/(pivotB - pivotA); 1539 } 1540 } 1541 1542 private void updatePageAlphaValues(int screenCenter) { 1543 boolean isInOverscroll = mOverScrollX < 0 || mOverScrollX > mMaxScrollX; 1544 if (mWorkspaceFadeInAdjacentScreens && 1545 !workspaceInModalState() && 1546 !mIsSwitchingState && 1547 !isInOverscroll) { 1548 for (int i = numCustomPages(); i < getChildCount(); i++) { 1549 CellLayout child = (CellLayout) getChildAt(i); 1550 if (child != null) { 1551 float scrollProgress = getScrollProgress(screenCenter, child, i); 1552 float alpha = 1 - Math.abs(scrollProgress); 1553 child.getShortcutsAndWidgets().setAlpha(alpha); 1554 } 1555 } 1556 } 1557 } 1558 1559 @TargetApi(Build.VERSION_CODES.LOLLIPOP) 1560 @Override 1561 public void enableAccessibleDrag(boolean enable) { 1562 for (int i = 0; i < getChildCount(); i++) { 1563 CellLayout child = (CellLayout) getChildAt(i); 1564 child.enableAccessibleDrag(enable, CellLayout.WORKSPACE_ACCESSIBILITY_DRAG); 1565 } 1566 1567 if (enable) { 1568 // We need to allow our individual children to become click handlers in this case 1569 setOnClickListener(null); 1570 } else { 1571 // Reset our click listener 1572 setOnClickListener(mLauncher); 1573 } 1574 mLauncher.getSearchBar().enableAccessibleDrag(enable); 1575 mLauncher.getHotseat().getLayout() 1576 .enableAccessibleDrag(enable, CellLayout.WORKSPACE_ACCESSIBILITY_DRAG); 1577 } 1578 1579 public boolean hasCustomContent() { 1580 return (mScreenOrder.size() > 0 && mScreenOrder.get(0) == CUSTOM_CONTENT_SCREEN_ID); 1581 } 1582 1583 public int numCustomPages() { 1584 return hasCustomContent() ? 1 : 0; 1585 } 1586 1587 public boolean isOnOrMovingToCustomContent() { 1588 return hasCustomContent() && getNextPage() == 0; 1589 } 1590 1591 private void updateStateForCustomContent(int screenCenter) { 1592 float translationX = 0; 1593 float progress = 0; 1594 if (hasCustomContent()) { 1595 int index = mScreenOrder.indexOf(CUSTOM_CONTENT_SCREEN_ID); 1596 1597 int scrollDelta = getScrollX() - getScrollForPage(index) - 1598 getLayoutTransitionOffsetForPage(index); 1599 float scrollRange = getScrollForPage(index + 1) - getScrollForPage(index); 1600 translationX = scrollRange - scrollDelta; 1601 progress = (scrollRange - scrollDelta) / scrollRange; 1602 1603 if (mIsRtl) { 1604 translationX = Math.min(0, translationX); 1605 } else { 1606 translationX = Math.max(0, translationX); 1607 } 1608 progress = Math.max(0, progress); 1609 } 1610 1611 if (Float.compare(progress, mLastCustomContentScrollProgress) == 0) return; 1612 1613 CellLayout cc = mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID); 1614 if (progress > 0 && cc.getVisibility() != VISIBLE && !workspaceInModalState()) { 1615 cc.setVisibility(VISIBLE); 1616 } 1617 1618 mLastCustomContentScrollProgress = progress; 1619 1620 // We should only update the drag layer background alpha if we are not in all apps or the 1621 // widgets tray 1622 if (mState == State.NORMAL) { 1623 mLauncher.getDragLayer().setBackgroundAlpha(progress == 1 ? 0 : progress * 0.8f); 1624 } 1625 1626 if (mLauncher.getHotseat() != null) { 1627 mLauncher.getHotseat().setTranslationX(translationX); 1628 } 1629 1630 if (getPageIndicator() != null) { 1631 getPageIndicator().setTranslationX(translationX); 1632 } 1633 1634 if (mCustomContentCallbacks != null) { 1635 mCustomContentCallbacks.onScrollProgressChanged(progress); 1636 } 1637 } 1638 1639 @Override 1640 protected OnClickListener getPageIndicatorClickListener() { 1641 AccessibilityManager am = (AccessibilityManager) 1642 getContext().getSystemService(Context.ACCESSIBILITY_SERVICE); 1643 if (!am.isTouchExplorationEnabled()) { 1644 return null; 1645 } 1646 OnClickListener listener = new OnClickListener() { 1647 @Override 1648 public void onClick(View arg0) { 1649 mLauncher.showOverviewMode(true); 1650 } 1651 }; 1652 return listener; 1653 } 1654 1655 @Override 1656 protected void screenScrolled(int screenCenter) { 1657 super.screenScrolled(screenCenter); 1658 1659 updatePageAlphaValues(screenCenter); 1660 updateStateForCustomContent(screenCenter); 1661 enableHwLayersOnVisiblePages(); 1662 1663 boolean shouldOverScroll = mOverScrollX < 0 || mOverScrollX > mMaxScrollX; 1664 1665 if (shouldOverScroll) { 1666 int index = 0; 1667 final int lowerIndex = 0; 1668 final int upperIndex = getChildCount() - 1; 1669 1670 final boolean isLeftPage = mOverScrollX < 0; 1671 index = (!mIsRtl && isLeftPage) || (mIsRtl && !isLeftPage) ? lowerIndex : upperIndex; 1672 1673 CellLayout cl = (CellLayout) getChildAt(index); 1674 float effect = Math.abs(mOverScrollEffect); 1675 cl.setOverScrollAmount(Math.abs(effect), isLeftPage); 1676 1677 mOverscrollEffectSet = true; 1678 } else { 1679 if (mOverscrollEffectSet && getChildCount() > 0) { 1680 mOverscrollEffectSet = false; 1681 ((CellLayout) getChildAt(0)).setOverScrollAmount(0, false); 1682 ((CellLayout) getChildAt(getChildCount() - 1)).setOverScrollAmount(0, false); 1683 } 1684 } 1685 } 1686 1687 protected void onAttachedToWindow() { 1688 super.onAttachedToWindow(); 1689 mWindowToken = getWindowToken(); 1690 computeScroll(); 1691 mDragController.setWindowToken(mWindowToken); 1692 } 1693 1694 protected void onDetachedFromWindow() { 1695 super.onDetachedFromWindow(); 1696 mWindowToken = null; 1697 } 1698 1699 protected void onResume() { 1700 if (getPageIndicator() != null) { 1701 // In case accessibility state has changed, we need to perform this on every 1702 // attach to window 1703 OnClickListener listener = getPageIndicatorClickListener(); 1704 if (listener != null) { 1705 getPageIndicator().setOnClickListener(listener); 1706 } 1707 } 1708 1709 // Update wallpaper dimensions if they were changed since last onResume 1710 // (we also always set the wallpaper dimensions in the constructor) 1711 if (LauncherAppState.getInstance().hasWallpaperChangedSinceLastCheck()) { 1712 setWallpaperDimension(); 1713 } 1714 mWallpaperIsLiveWallpaper = mWallpaperManager.getWallpaperInfo() != null; 1715 // Force the wallpaper offset steps to be set again, because another app might have changed 1716 // them 1717 mLastSetWallpaperOffsetSteps = 0f; 1718 } 1719 1720 @Override 1721 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1722 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1723 mWallpaperOffset.syncWithScroll(); 1724 mWallpaperOffset.jumpToFinal(); 1725 } 1726 super.onLayout(changed, left, top, right, bottom); 1727 } 1728 1729 @Override 1730 protected void onDraw(Canvas canvas) { 1731 super.onDraw(canvas); 1732 1733 // Call back to LauncherModel to finish binding after the first draw 1734 post(mBindPages); 1735 } 1736 1737 @Override 1738 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1739 if (!mLauncher.isAppsViewVisible()) { 1740 final Folder openFolder = getOpenFolder(); 1741 if (openFolder != null) { 1742 return openFolder.requestFocus(direction, previouslyFocusedRect); 1743 } else { 1744 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1745 } 1746 } 1747 return false; 1748 } 1749 1750 @Override 1751 public int getDescendantFocusability() { 1752 if (workspaceInModalState()) { 1753 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1754 } 1755 return super.getDescendantFocusability(); 1756 } 1757 1758 @Override 1759 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1760 if (!mLauncher.isAppsViewVisible()) { 1761 final Folder openFolder = getOpenFolder(); 1762 if (openFolder != null) { 1763 openFolder.addFocusables(views, direction); 1764 } else { 1765 super.addFocusables(views, direction, focusableMode); 1766 } 1767 } 1768 } 1769 1770 public boolean workspaceInModalState() { 1771 return mState != State.NORMAL; 1772 } 1773 1774 void enableChildrenCache(int fromPage, int toPage) { 1775 if (fromPage > toPage) { 1776 final int temp = fromPage; 1777 fromPage = toPage; 1778 toPage = temp; 1779 } 1780 1781 final int screenCount = getChildCount(); 1782 1783 fromPage = Math.max(fromPage, 0); 1784 toPage = Math.min(toPage, screenCount - 1); 1785 1786 for (int i = fromPage; i <= toPage; i++) { 1787 final CellLayout layout = (CellLayout) getChildAt(i); 1788 layout.setChildrenDrawnWithCacheEnabled(true); 1789 layout.setChildrenDrawingCacheEnabled(true); 1790 } 1791 } 1792 1793 void clearChildrenCache() { 1794 final int screenCount = getChildCount(); 1795 for (int i = 0; i < screenCount; i++) { 1796 final CellLayout layout = (CellLayout) getChildAt(i); 1797 layout.setChildrenDrawnWithCacheEnabled(false); 1798 // In software mode, we don't want the items to continue to be drawn into bitmaps 1799 if (!isHardwareAccelerated()) { 1800 layout.setChildrenDrawingCacheEnabled(false); 1801 } 1802 } 1803 } 1804 1805 @Thunk void updateChildrenLayersEnabled(boolean force) { 1806 boolean small = mState == State.OVERVIEW || mIsSwitchingState; 1807 boolean enableChildrenLayers = force || small || mAnimatingViewIntoPlace || isPageMoving(); 1808 1809 if (enableChildrenLayers != mChildrenLayersEnabled) { 1810 mChildrenLayersEnabled = enableChildrenLayers; 1811 if (mChildrenLayersEnabled) { 1812 enableHwLayersOnVisiblePages(); 1813 } else { 1814 for (int i = 0; i < getPageCount(); i++) { 1815 final CellLayout cl = (CellLayout) getChildAt(i); 1816 cl.enableHardwareLayer(false); 1817 } 1818 } 1819 } 1820 } 1821 1822 private void enableHwLayersOnVisiblePages() { 1823 if (mChildrenLayersEnabled) { 1824 final int screenCount = getChildCount(); 1825 getVisiblePages(mTempVisiblePagesRange); 1826 int leftScreen = mTempVisiblePagesRange[0]; 1827 int rightScreen = mTempVisiblePagesRange[1]; 1828 if (leftScreen == rightScreen) { 1829 // make sure we're caching at least two pages always 1830 if (rightScreen < screenCount - 1) { 1831 rightScreen++; 1832 } else if (leftScreen > 0) { 1833 leftScreen--; 1834 } 1835 } 1836 1837 final CellLayout customScreen = mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID); 1838 for (int i = 0; i < screenCount; i++) { 1839 final CellLayout layout = (CellLayout) getPageAt(i); 1840 1841 // enable layers between left and right screen inclusive, except for the 1842 // customScreen, which may animate its content during transitions. 1843 boolean enableLayer = layout != customScreen && 1844 leftScreen <= i && i <= rightScreen && shouldDrawChild(layout); 1845 layout.enableHardwareLayer(enableLayer); 1846 } 1847 } 1848 } 1849 1850 public void buildPageHardwareLayers() { 1851 // force layers to be enabled just for the call to buildLayer 1852 updateChildrenLayersEnabled(true); 1853 if (getWindowToken() != null) { 1854 final int childCount = getChildCount(); 1855 for (int i = 0; i < childCount; i++) { 1856 CellLayout cl = (CellLayout) getChildAt(i); 1857 cl.buildHardwareLayer(); 1858 } 1859 } 1860 updateChildrenLayersEnabled(false); 1861 } 1862 1863 protected void onWallpaperTap(MotionEvent ev) { 1864 final int[] position = mTempCell; 1865 getLocationOnScreen(position); 1866 1867 int pointerIndex = ev.getActionIndex(); 1868 position[0] += (int) ev.getX(pointerIndex); 1869 position[1] += (int) ev.getY(pointerIndex); 1870 1871 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1872 ev.getAction() == MotionEvent.ACTION_UP 1873 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1874 position[0], position[1], 0, null); 1875 } 1876 1877 /* 1878 * 1879 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1880 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1881 * 1882 * These methods mark the appropriate pages as accepting drops (which alters their visual 1883 * appearance). 1884 * 1885 */ 1886 private static Rect getDrawableBounds(Drawable d) { 1887 Rect bounds = new Rect(); 1888 d.copyBounds(bounds); 1889 if (bounds.width() == 0 || bounds.height() == 0) { 1890 bounds.set(0, 0, d.getIntrinsicWidth(), d.getIntrinsicHeight()); 1891 } else { 1892 bounds.offsetTo(0, 0); 1893 } 1894 if (d instanceof PreloadIconDrawable) { 1895 int inset = -((PreloadIconDrawable) d).getOutset(); 1896 bounds.inset(inset, inset); 1897 } 1898 return bounds; 1899 } 1900 1901 public void onExternalDragStartedWithItem(View v) { 1902 // Compose a drag bitmap with the view scaled to the icon size 1903 DeviceProfile grid = mLauncher.getDeviceProfile(); 1904 int iconSize = grid.iconSizePx; 1905 int bmpWidth = v.getMeasuredWidth(); 1906 int bmpHeight = v.getMeasuredHeight(); 1907 1908 // If this is a text view, use its drawable instead 1909 if (v instanceof TextView) { 1910 Drawable d = getTextViewIcon((TextView) v); 1911 Rect bounds = getDrawableBounds(d); 1912 bmpWidth = bounds.width(); 1913 bmpHeight = bounds.height(); 1914 } 1915 1916 // Compose the bitmap to create the icon from 1917 Bitmap b = Bitmap.createBitmap(bmpWidth, bmpHeight, 1918 Bitmap.Config.ARGB_8888); 1919 mCanvas.setBitmap(b); 1920 drawDragView(v, mCanvas, 0); 1921 mCanvas.setBitmap(null); 1922 1923 // The outline is used to visualize where the item will land if dropped 1924 mDragOutline = createDragOutline(b, DRAG_BITMAP_PADDING, iconSize, iconSize, true); 1925 } 1926 1927 public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, boolean clipAlpha) { 1928 int[] size = estimateItemSize(info, false); 1929 1930 // The outline is used to visualize where the item will land if dropped 1931 mDragOutline = createDragOutline(b, DRAG_BITMAP_PADDING, size[0], size[1], clipAlpha); 1932 } 1933 1934 public void exitWidgetResizeMode() { 1935 DragLayer dragLayer = mLauncher.getDragLayer(); 1936 dragLayer.clearAllResizeFrames(); 1937 } 1938 1939 @Override 1940 protected void getFreeScrollPageRange(int[] range) { 1941 getOverviewModePages(range); 1942 } 1943 1944 private void getOverviewModePages(int[] range) { 1945 int start = numCustomPages(); 1946 int end = getChildCount() - 1; 1947 1948 range[0] = Math.max(0, Math.min(start, getChildCount() - 1)); 1949 range[1] = Math.max(0, end); 1950 } 1951 1952 public void onStartReordering() { 1953 super.onStartReordering(); 1954 // Reordering handles its own animations, disable the automatic ones. 1955 disableLayoutTransitions(); 1956 } 1957 1958 public void onEndReordering() { 1959 super.onEndReordering(); 1960 1961 if (mLauncher.isWorkspaceLoading()) { 1962 // Invalid and dangerous operation if workspace is loading 1963 return; 1964 } 1965 1966 mScreenOrder.clear(); 1967 int count = getChildCount(); 1968 for (int i = 0; i < count; i++) { 1969 CellLayout cl = ((CellLayout) getChildAt(i)); 1970 mScreenOrder.add(getIdForScreen(cl)); 1971 } 1972 1973 mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); 1974 1975 // Re-enable auto layout transitions for page deletion. 1976 enableLayoutTransitions(); 1977 } 1978 1979 public boolean isInOverviewMode() { 1980 return mState == State.OVERVIEW; 1981 } 1982 1983 int getOverviewModeTranslationY() { 1984 DeviceProfile grid = mLauncher.getDeviceProfile(); 1985 Rect overviewBar = grid.getOverviewModeButtonBarRect(); 1986 1987 int availableHeight = getViewportHeight(); 1988 int scaledHeight = (int) (mOverviewModeShrinkFactor * getNormalChildHeight()); 1989 int offsetFromTopEdge = (availableHeight - scaledHeight) / 2; 1990 int offsetToCenterInOverview = (availableHeight - mInsets.top - overviewBar.height() 1991 - scaledHeight) / 2; 1992 1993 return -offsetFromTopEdge + mInsets.top + offsetToCenterInOverview; 1994 } 1995 1996 /** 1997 * Sets the current workspace {@link State}, returning an animation transitioning the workspace 1998 * to that new state. 1999 */ 2000 public Animator setStateWithAnimation(State toState, int toPage, boolean animated, 2001 HashMap<View, Integer> layerViews) { 2002 // Create the animation to the new state 2003 Animator workspaceAnim = mStateTransitionAnimation.getAnimationToState(getState(), 2004 toState, toPage, animated, layerViews); 2005 2006 // Update the current state 2007 mState = toState; 2008 updateAccessibilityFlags(); 2009 2010 return workspaceAnim; 2011 } 2012 2013 State getState() { 2014 return mState; 2015 } 2016 2017 public void updateAccessibilityFlags() { 2018 if (Utilities.isLmpOrAbove()) { 2019 int total = getPageCount(); 2020 for (int i = numCustomPages(); i < total; i++) { 2021 updateAccessibilityFlags((CellLayout) getPageAt(i), i); 2022 } 2023 } else { 2024 int accessible = mState == State.NORMAL ? 2025 IMPORTANT_FOR_ACCESSIBILITY_AUTO : 2026 IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS; 2027 setImportantForAccessibility(accessible); 2028 } 2029 } 2030 2031 private void updateAccessibilityFlags(CellLayout page, int pageNo) { 2032 if (mState == State.OVERVIEW) { 2033 page.setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_YES); 2034 page.getShortcutsAndWidgets().setImportantForAccessibility( 2035 IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS); 2036 page.setContentDescription(getPageDescription(pageNo)); 2037 2038 if (mPagesAccessibilityDelegate == null) { 2039 mPagesAccessibilityDelegate = new OverviewScreenAccessibilityDelegate(this); 2040 } 2041 page.setAccessibilityDelegate(mPagesAccessibilityDelegate); 2042 } else { 2043 int accessible = mState == State.NORMAL ? 2044 IMPORTANT_FOR_ACCESSIBILITY_AUTO : 2045 IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS; 2046 page.setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_NO); 2047 page.getShortcutsAndWidgets().setImportantForAccessibility(accessible); 2048 page.setContentDescription(null); 2049 page.setAccessibilityDelegate(null); 2050 } 2051 } 2052 2053 @Override 2054 public void onLauncherTransitionPrepare(Launcher l, boolean animated, boolean toWorkspace) { 2055 mIsSwitchingState = true; 2056 2057 // Invalidate here to ensure that the pages are rendered during the state change transition. 2058 invalidate(); 2059 2060 updateChildrenLayersEnabled(false); 2061 hideCustomContentIfNecessary(); 2062 } 2063 2064 @Override 2065 public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) { 2066 } 2067 2068 @Override 2069 public void onLauncherTransitionStep(Launcher l, float t) { 2070 mTransitionProgress = t; 2071 } 2072 2073 @Override 2074 public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) { 2075 mIsSwitchingState = false; 2076 updateChildrenLayersEnabled(false); 2077 showCustomContentIfNecessary(); 2078 } 2079 2080 void updateCustomContentVisibility() { 2081 int visibility = mState == Workspace.State.NORMAL ? VISIBLE : INVISIBLE; 2082 if (hasCustomContent()) { 2083 mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID).setVisibility(visibility); 2084 } 2085 } 2086 2087 void showCustomContentIfNecessary() { 2088 boolean show = mState == Workspace.State.NORMAL; 2089 if (show && hasCustomContent()) { 2090 mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID).setVisibility(VISIBLE); 2091 } 2092 } 2093 2094 void hideCustomContentIfNecessary() { 2095 boolean hide = mState != Workspace.State.NORMAL; 2096 if (hide && hasCustomContent()) { 2097 disableLayoutTransitions(); 2098 mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID).setVisibility(INVISIBLE); 2099 enableLayoutTransitions(); 2100 } 2101 } 2102 2103 @Override 2104 public View getContent() { 2105 return this; 2106 } 2107 2108 /** 2109 * Returns the drawable for the given text view. 2110 */ 2111 public static Drawable getTextViewIcon(TextView tv) { 2112 final Drawable[] drawables = tv.getCompoundDrawables(); 2113 for (int i = 0; i < drawables.length; i++) { 2114 if (drawables[i] != null) { 2115 return drawables[i]; 2116 } 2117 } 2118 return null; 2119 } 2120 2121 /** 2122 * Draw the View v into the given Canvas. 2123 * 2124 * @param v the view to draw 2125 * @param destCanvas the canvas to draw on 2126 * @param padding the horizontal and vertical padding to use when drawing 2127 */ 2128 private static void drawDragView(View v, Canvas destCanvas, int padding) { 2129 final Rect clipRect = sTempRect; 2130 v.getDrawingRect(clipRect); 2131 2132 boolean textVisible = false; 2133 2134 destCanvas.save(); 2135 if (v instanceof TextView) { 2136 Drawable d = getTextViewIcon((TextView) v); 2137 Rect bounds = getDrawableBounds(d); 2138 clipRect.set(0, 0, bounds.width() + padding, bounds.height() + padding); 2139 destCanvas.translate(padding / 2 - bounds.left, padding / 2 - bounds.top); 2140 d.draw(destCanvas); 2141 } else { 2142 if (v instanceof FolderIcon) { 2143 // For FolderIcons the text can bleed into the icon area, and so we need to 2144 // hide the text completely (which can't be achieved by clipping). 2145 if (((FolderIcon) v).getTextVisible()) { 2146 ((FolderIcon) v).setTextVisible(false); 2147 textVisible = true; 2148 } 2149 } 2150 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 2151 destCanvas.clipRect(clipRect, Op.REPLACE); 2152 v.draw(destCanvas); 2153 2154 // Restore text visibility of FolderIcon if necessary 2155 if (textVisible) { 2156 ((FolderIcon) v).setTextVisible(true); 2157 } 2158 } 2159 destCanvas.restore(); 2160 } 2161 2162 /** 2163 * Returns a new bitmap to show when the given View is being dragged around. 2164 * Responsibility for the bitmap is transferred to the caller. 2165 * @param expectedPadding padding to add to the drag view. If a different padding was used 2166 * its value will be changed 2167 */ 2168 public Bitmap createDragBitmap(View v, AtomicInteger expectedPadding) { 2169 Bitmap b; 2170 2171 int padding = expectedPadding.get(); 2172 if (v instanceof TextView) { 2173 Drawable d = getTextViewIcon((TextView) v); 2174 Rect bounds = getDrawableBounds(d); 2175 b = Bitmap.createBitmap(bounds.width() + padding, 2176 bounds.height() + padding, Bitmap.Config.ARGB_8888); 2177 expectedPadding.set(padding - bounds.left - bounds.top); 2178 } else { 2179 b = Bitmap.createBitmap( 2180 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 2181 } 2182 2183 mCanvas.setBitmap(b); 2184 drawDragView(v, mCanvas, padding); 2185 mCanvas.setBitmap(null); 2186 2187 return b; 2188 } 2189 2190 /** 2191 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2192 * Responsibility for the bitmap is transferred to the caller. 2193 */ 2194 private Bitmap createDragOutline(View v, int padding) { 2195 final int outlineColor = getResources().getColor(R.color.outline_color); 2196 final Bitmap b = Bitmap.createBitmap( 2197 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 2198 2199 mCanvas.setBitmap(b); 2200 drawDragView(v, mCanvas, padding); 2201 mOutlineHelper.applyExpensiveOutlineWithBlur(b, mCanvas, outlineColor, outlineColor); 2202 mCanvas.setBitmap(null); 2203 return b; 2204 } 2205 2206 /** 2207 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2208 * Responsibility for the bitmap is transferred to the caller. 2209 */ 2210 private Bitmap createDragOutline(Bitmap orig, int padding, int w, int h, 2211 boolean clipAlpha) { 2212 final int outlineColor = getResources().getColor(R.color.outline_color); 2213 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 2214 mCanvas.setBitmap(b); 2215 2216 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 2217 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 2218 (h - padding) / (float) orig.getHeight()); 2219 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 2220 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 2221 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 2222 2223 // center the image 2224 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 2225 2226 mCanvas.drawBitmap(orig, src, dst, null); 2227 mOutlineHelper.applyExpensiveOutlineWithBlur(b, mCanvas, outlineColor, outlineColor, 2228 clipAlpha); 2229 mCanvas.setBitmap(null); 2230 2231 return b; 2232 } 2233 2234 public void startDrag(CellLayout.CellInfo cellInfo) { 2235 startDrag(cellInfo, false); 2236 } 2237 2238 @Override 2239 public void startDrag(CellLayout.CellInfo cellInfo, boolean accessible) { 2240 View child = cellInfo.cell; 2241 2242 // Make sure the drag was started by a long press as opposed to a long click. 2243 if (!child.isInTouchMode()) { 2244 return; 2245 } 2246 2247 mDragInfo = cellInfo; 2248 child.setVisibility(INVISIBLE); 2249 CellLayout layout = (CellLayout) child.getParent().getParent(); 2250 layout.prepareChildForDrag(child); 2251 2252 beginDragShared(child, this, accessible); 2253 } 2254 2255 public void beginDragShared(View child, DragSource source, boolean accessible) { 2256 beginDragShared(child, new Point(), source, accessible); 2257 } 2258 2259 public void beginDragShared(View child, Point relativeTouchPos, DragSource source, 2260 boolean accessible) { 2261 child.clearFocus(); 2262 child.setPressed(false); 2263 2264 // The outline is used to visualize where the item will land if dropped 2265 mDragOutline = createDragOutline(child, DRAG_BITMAP_PADDING); 2266 2267 mLauncher.onDragStarted(child); 2268 // The drag bitmap follows the touch point around on the screen 2269 AtomicInteger padding = new AtomicInteger(DRAG_BITMAP_PADDING); 2270 final Bitmap b = createDragBitmap(child, padding); 2271 2272 final int bmpWidth = b.getWidth(); 2273 final int bmpHeight = b.getHeight(); 2274 2275 float scale = mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 2276 int dragLayerX = Math.round(mTempXY[0] - (bmpWidth - scale * child.getWidth()) / 2); 2277 int dragLayerY = Math.round(mTempXY[1] - (bmpHeight - scale * bmpHeight) / 2 2278 - padding.get() / 2); 2279 2280 DeviceProfile grid = mLauncher.getDeviceProfile(); 2281 Point dragVisualizeOffset = null; 2282 Rect dragRect = null; 2283 if (child instanceof BubbleTextView) { 2284 BubbleTextView icon = (BubbleTextView) child; 2285 int iconSize = grid.iconSizePx; 2286 int top = child.getPaddingTop(); 2287 int left = (bmpWidth - iconSize) / 2; 2288 int right = left + iconSize; 2289 int bottom = top + iconSize; 2290 if (icon.isLayoutHorizontal()) { 2291 // If the layout is horizontal, then if we are just picking up the icon, then just 2292 // use the child position since the icon is top-left aligned. Otherwise, offset 2293 // the drag layer position horizontally so that the icon is under the current 2294 // touch position. 2295 if (icon.getIcon().getBounds().contains(relativeTouchPos.x, relativeTouchPos.y)) { 2296 dragLayerX = Math.round(mTempXY[0]); 2297 } else { 2298 dragLayerX = Math.round(mTempXY[0] + relativeTouchPos.x - (bmpWidth / 2)); 2299 } 2300 } 2301 dragLayerY += top; 2302 // Note: The drag region is used to calculate drag layer offsets, but the 2303 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 2304 dragVisualizeOffset = new Point(-padding.get() / 2, padding.get() / 2); 2305 dragRect = new Rect(left, top, right, bottom); 2306 } else if (child instanceof FolderIcon) { 2307 int previewSize = grid.folderIconSizePx; 2308 dragRect = new Rect(0, child.getPaddingTop(), child.getWidth(), previewSize); 2309 } 2310 2311 // Clear the pressed state if necessary 2312 if (child instanceof BubbleTextView) { 2313 BubbleTextView icon = (BubbleTextView) child; 2314 icon.clearPressedBackground(); 2315 } 2316 2317 if (child.getTag() == null || !(child.getTag() instanceof ItemInfo)) { 2318 String msg = "Drag started with a view that has no tag set. This " 2319 + "will cause a crash (issue 11627249) down the line. " 2320 + "View: " + child + " tag: " + child.getTag(); 2321 throw new IllegalStateException(msg); 2322 } 2323 2324 DragView dv = mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 2325 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect, scale, accessible); 2326 dv.setIntrinsicIconScaleFactor(source.getIntrinsicIconScaleFactor()); 2327 2328 if (child.getParent() instanceof ShortcutAndWidgetContainer) { 2329 mDragSourceInternal = (ShortcutAndWidgetContainer) child.getParent(); 2330 } 2331 2332 b.recycle(); 2333 } 2334 2335 public void beginExternalDragShared(View child, DragSource source) { 2336 DeviceProfile grid = mLauncher.getDeviceProfile(); 2337 int iconSize = grid.iconSizePx; 2338 2339 // Notify launcher of drag start 2340 mLauncher.onDragStarted(child); 2341 2342 // Compose a new drag bitmap that is of the icon size 2343 AtomicInteger padding = new AtomicInteger(DRAG_BITMAP_PADDING); 2344 final Bitmap tmpB = createDragBitmap(child, padding); 2345 Bitmap b = Bitmap.createBitmap(iconSize, iconSize, Bitmap.Config.ARGB_8888); 2346 Paint p = new Paint(); 2347 p.setFilterBitmap(true); 2348 mCanvas.setBitmap(b); 2349 mCanvas.drawBitmap(tmpB, new Rect(0, 0, tmpB.getWidth(), tmpB.getHeight()), 2350 new Rect(0, 0, iconSize, iconSize), p); 2351 mCanvas.setBitmap(null); 2352 2353 // Find the child's location on the screen 2354 int bmpWidth = tmpB.getWidth(); 2355 float iconScale = (float) bmpWidth / iconSize; 2356 float scale = mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY) * iconScale; 2357 int dragLayerX = Math.round(mTempXY[0] - (bmpWidth - scale * child.getWidth()) / 2); 2358 int dragLayerY = Math.round(mTempXY[1]); 2359 2360 // Note: The drag region is used to calculate drag layer offsets, but the 2361 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 2362 Point dragVisualizeOffset = new Point(-padding.get() / 2, padding.get() / 2); 2363 Rect dragRect = new Rect(0, 0, iconSize, iconSize); 2364 2365 if (child.getTag() == null || !(child.getTag() instanceof ItemInfo)) { 2366 String msg = "Drag started with a view that has no tag set. This " 2367 + "will cause a crash (issue 11627249) down the line. " 2368 + "View: " + child + " tag: " + child.getTag(); 2369 throw new IllegalStateException(msg); 2370 } 2371 2372 // Start the drag 2373 DragView dv = mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 2374 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect, scale, false); 2375 dv.setIntrinsicIconScaleFactor(source.getIntrinsicIconScaleFactor()); 2376 2377 // Recycle temporary bitmaps 2378 tmpB.recycle(); 2379 } 2380 2381 public boolean transitionStateShouldAllowDrop() { 2382 return ((!isSwitchingState() || mTransitionProgress > 0.5f) && 2383 (mState == State.NORMAL || mState == State.SPRING_LOADED)); 2384 } 2385 2386 /** 2387 * {@inheritDoc} 2388 */ 2389 public boolean acceptDrop(DragObject d) { 2390 // If it's an external drop (e.g. from All Apps), check if it should be accepted 2391 CellLayout dropTargetLayout = mDropToLayout; 2392 if (d.dragSource != this) { 2393 // Don't accept the drop if we're not over a screen at time of drop 2394 if (dropTargetLayout == null) { 2395 return false; 2396 } 2397 if (!transitionStateShouldAllowDrop()) return false; 2398 2399 mDragViewVisualCenter = d.getVisualCenter(mDragViewVisualCenter); 2400 2401 // We want the point to be mapped to the dragTarget. 2402 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 2403 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2404 } else { 2405 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 2406 } 2407 2408 int spanX = 1; 2409 int spanY = 1; 2410 if (mDragInfo != null) { 2411 final CellLayout.CellInfo dragCellInfo = mDragInfo; 2412 spanX = dragCellInfo.spanX; 2413 spanY = dragCellInfo.spanY; 2414 } else { 2415 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 2416 spanX = dragInfo.spanX; 2417 spanY = dragInfo.spanY; 2418 } 2419 2420 int minSpanX = spanX; 2421 int minSpanY = spanY; 2422 if (d.dragInfo instanceof PendingAddWidgetInfo) { 2423 minSpanX = ((PendingAddWidgetInfo) d.dragInfo).minSpanX; 2424 minSpanY = ((PendingAddWidgetInfo) d.dragInfo).minSpanY; 2425 } 2426 2427 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2428 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, dropTargetLayout, 2429 mTargetCell); 2430 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2431 mDragViewVisualCenter[1], mTargetCell); 2432 if (mCreateUserFolderOnDrop && willCreateUserFolder((ItemInfo) d.dragInfo, 2433 dropTargetLayout, mTargetCell, distance, true)) { 2434 return true; 2435 } 2436 2437 if (mAddToExistingFolderOnDrop && willAddToExistingUserFolder((ItemInfo) d.dragInfo, 2438 dropTargetLayout, mTargetCell, distance)) { 2439 return true; 2440 } 2441 2442 int[] resultSpan = new int[2]; 2443 mTargetCell = dropTargetLayout.performReorder((int) mDragViewVisualCenter[0], 2444 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2445 null, mTargetCell, resultSpan, CellLayout.MODE_ACCEPT_DROP); 2446 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2447 2448 // Don't accept the drop if there's no room for the item 2449 if (!foundCell) { 2450 // Don't show the message if we are dropping on the AllApps button and the hotseat 2451 // is full 2452 boolean isHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2453 if (mTargetCell != null && isHotseat) { 2454 Hotseat hotseat = mLauncher.getHotseat(); 2455 if (hotseat.isAllAppsButtonRank( 2456 hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { 2457 return false; 2458 } 2459 } 2460 2461 mLauncher.showOutOfSpaceMessage(isHotseat); 2462 return false; 2463 } 2464 } 2465 2466 long screenId = getIdForScreen(dropTargetLayout); 2467 if (screenId == EXTRA_EMPTY_SCREEN_ID) { 2468 commitExtraEmptyScreen(); 2469 } 2470 2471 return true; 2472 } 2473 2474 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, float 2475 distance, boolean considerTimeout) { 2476 if (distance > mMaxDistanceForFolderCreation) return false; 2477 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2478 2479 if (dropOverView != null) { 2480 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2481 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2482 return false; 2483 } 2484 } 2485 2486 boolean hasntMoved = false; 2487 if (mDragInfo != null) { 2488 hasntMoved = dropOverView == mDragInfo.cell; 2489 } 2490 2491 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2492 return false; 2493 } 2494 2495 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2496 boolean willBecomeShortcut = 2497 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2498 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2499 2500 return (aboveShortcut && willBecomeShortcut); 2501 } 2502 2503 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell, 2504 float distance) { 2505 if (distance > mMaxDistanceForFolderCreation) return false; 2506 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2507 2508 if (dropOverView != null) { 2509 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2510 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2511 return false; 2512 } 2513 } 2514 2515 if (dropOverView instanceof FolderIcon) { 2516 FolderIcon fi = (FolderIcon) dropOverView; 2517 if (fi.acceptDrop(dragInfo)) { 2518 return true; 2519 } 2520 } 2521 return false; 2522 } 2523 2524 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2525 int[] targetCell, float distance, boolean external, DragView dragView, 2526 Runnable postAnimationRunnable) { 2527 if (distance > mMaxDistanceForFolderCreation) return false; 2528 View v = target.getChildAt(targetCell[0], targetCell[1]); 2529 2530 boolean hasntMoved = false; 2531 if (mDragInfo != null) { 2532 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2533 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2534 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2535 } 2536 2537 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2538 mCreateUserFolderOnDrop = false; 2539 final long screenId = (targetCell == null) ? mDragInfo.screenId : getIdForScreen(target); 2540 2541 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2542 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2543 2544 if (aboveShortcut && willBecomeShortcut) { 2545 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2546 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2547 // if the drag started here, we need to remove it from the workspace 2548 if (!external) { 2549 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2550 } 2551 2552 Rect folderLocation = new Rect(); 2553 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2554 target.removeView(v); 2555 2556 FolderIcon fi = 2557 mLauncher.addFolder(target, container, screenId, targetCell[0], targetCell[1]); 2558 destInfo.cellX = -1; 2559 destInfo.cellY = -1; 2560 sourceInfo.cellX = -1; 2561 sourceInfo.cellY = -1; 2562 2563 // If the dragView is null, we can't animate 2564 boolean animate = dragView != null; 2565 if (animate) { 2566 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2567 postAnimationRunnable); 2568 } else { 2569 fi.addItem(destInfo); 2570 fi.addItem(sourceInfo); 2571 } 2572 return true; 2573 } 2574 return false; 2575 } 2576 2577 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2578 float distance, DragObject d, boolean external) { 2579 if (distance > mMaxDistanceForFolderCreation) return false; 2580 2581 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2582 if (!mAddToExistingFolderOnDrop) return false; 2583 mAddToExistingFolderOnDrop = false; 2584 2585 if (dropOverView instanceof FolderIcon) { 2586 FolderIcon fi = (FolderIcon) dropOverView; 2587 if (fi.acceptDrop(d.dragInfo)) { 2588 fi.onDrop(d); 2589 2590 // if the drag started here, we need to remove it from the workspace 2591 if (!external) { 2592 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2593 } 2594 return true; 2595 } 2596 } 2597 return false; 2598 } 2599 2600 @Override 2601 public void prepareAccessibilityDrop() { } 2602 2603 public void onDrop(final DragObject d) { 2604 mDragViewVisualCenter = d.getVisualCenter(mDragViewVisualCenter); 2605 CellLayout dropTargetLayout = mDropToLayout; 2606 2607 // We want the point to be mapped to the dragTarget. 2608 if (dropTargetLayout != null) { 2609 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 2610 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2611 } else { 2612 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 2613 } 2614 } 2615 2616 int snapScreen = WorkspaceStateTransitionAnimation.SCROLL_TO_CURRENT_PAGE; 2617 boolean resizeOnDrop = false; 2618 if (d.dragSource != this) { 2619 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2620 (int) mDragViewVisualCenter[1] }; 2621 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2622 } else if (mDragInfo != null) { 2623 final View cell = mDragInfo.cell; 2624 2625 Runnable resizeRunnable = null; 2626 if (dropTargetLayout != null && !d.cancelled) { 2627 // Move internally 2628 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2629 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2630 long container = hasMovedIntoHotseat ? 2631 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2632 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2633 long screenId = (mTargetCell[0] < 0) ? 2634 mDragInfo.screenId : getIdForScreen(dropTargetLayout); 2635 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2636 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2637 // First we find the cell nearest to point at which the item is 2638 // dropped, without any consideration to whether there is an item there. 2639 2640 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2641 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2642 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2643 mDragViewVisualCenter[1], mTargetCell); 2644 2645 // If the item being dropped is a shortcut and the nearest drop 2646 // cell also contains a shortcut, then create a folder with the two shortcuts. 2647 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2648 dropTargetLayout, mTargetCell, distance, false, d.dragView, null)) { 2649 return; 2650 } 2651 2652 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, 2653 distance, d, false)) { 2654 return; 2655 } 2656 2657 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2658 // we need to find the nearest cell location that is vacant 2659 ItemInfo item = (ItemInfo) d.dragInfo; 2660 int minSpanX = item.spanX; 2661 int minSpanY = item.spanY; 2662 if (item.minSpanX > 0 && item.minSpanY > 0) { 2663 minSpanX = item.minSpanX; 2664 minSpanY = item.minSpanY; 2665 } 2666 2667 int[] resultSpan = new int[2]; 2668 mTargetCell = dropTargetLayout.performReorder((int) mDragViewVisualCenter[0], 2669 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, cell, 2670 mTargetCell, resultSpan, CellLayout.MODE_ON_DROP); 2671 2672 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2673 2674 // if the widget resizes on drop 2675 if (foundCell && (cell instanceof AppWidgetHostView) && 2676 (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY)) { 2677 resizeOnDrop = true; 2678 item.spanX = resultSpan[0]; 2679 item.spanY = resultSpan[1]; 2680 AppWidgetHostView awhv = (AppWidgetHostView) cell; 2681 AppWidgetResizeFrame.updateWidgetSizeRanges(awhv, mLauncher, resultSpan[0], 2682 resultSpan[1]); 2683 } 2684 2685 if (getScreenIdForPageIndex(mCurrentPage) != screenId && !hasMovedIntoHotseat) { 2686 snapScreen = getPageIndexForScreenId(screenId); 2687 snapToPage(snapScreen); 2688 } 2689 2690 if (foundCell) { 2691 final ItemInfo info = (ItemInfo) cell.getTag(); 2692 if (hasMovedLayouts) { 2693 // Reparent the view 2694 CellLayout parentCell = getParentCellLayoutForView(cell); 2695 if (parentCell != null) { 2696 parentCell.removeView(cell); 2697 } else if (LauncherAppState.isDogfoodBuild()) { 2698 throw new NullPointerException("mDragInfo.cell has null parent"); 2699 } 2700 addInScreen(cell, container, screenId, mTargetCell[0], mTargetCell[1], 2701 info.spanX, info.spanY); 2702 } 2703 2704 // update the item's position after drop 2705 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2706 lp.cellX = lp.tmpCellX = mTargetCell[0]; 2707 lp.cellY = lp.tmpCellY = mTargetCell[1]; 2708 lp.cellHSpan = item.spanX; 2709 lp.cellVSpan = item.spanY; 2710 lp.isLockedToGrid = true; 2711 2712 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2713 cell instanceof LauncherAppWidgetHostView) { 2714 final CellLayout cellLayout = dropTargetLayout; 2715 // We post this call so that the widget has a chance to be placed 2716 // in its final location 2717 2718 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2719 AppWidgetProviderInfo pInfo = hostView.getAppWidgetInfo(); 2720 if (pInfo != null && pInfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE 2721 && !d.accessibleDrag) { 2722 final Runnable addResizeFrame = new Runnable() { 2723 public void run() { 2724 DragLayer dragLayer = mLauncher.getDragLayer(); 2725 dragLayer.addResizeFrame(info, hostView, cellLayout); 2726 } 2727 }; 2728 resizeRunnable = (new Runnable() { 2729 public void run() { 2730 if (!isPageMoving()) { 2731 addResizeFrame.run(); 2732 } else { 2733 mDelayedResizeRunnable = addResizeFrame; 2734 } 2735 } 2736 }); 2737 } 2738 } 2739 2740 LauncherModel.modifyItemInDatabase(mLauncher, info, container, screenId, lp.cellX, 2741 lp.cellY, item.spanX, item.spanY); 2742 } else { 2743 // If we can't find a drop location, we return the item to its original position 2744 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2745 mTargetCell[0] = lp.cellX; 2746 mTargetCell[1] = lp.cellY; 2747 CellLayout layout = (CellLayout) cell.getParent().getParent(); 2748 layout.markCellsAsOccupiedForView(cell); 2749 } 2750 } 2751 2752 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2753 final Runnable finalResizeRunnable = resizeRunnable; 2754 // Prepare it to be animated into its new position 2755 // This must be called after the view has been re-parented 2756 final Runnable onCompleteRunnable = new Runnable() { 2757 @Override 2758 public void run() { 2759 mAnimatingViewIntoPlace = false; 2760 updateChildrenLayersEnabled(false); 2761 if (finalResizeRunnable != null) { 2762 finalResizeRunnable.run(); 2763 } 2764 } 2765 }; 2766 mAnimatingViewIntoPlace = true; 2767 if (d.dragView.hasDrawn()) { 2768 final ItemInfo info = (ItemInfo) cell.getTag(); 2769 boolean isWidget = info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET 2770 || info.itemType == LauncherSettings.Favorites.ITEM_TYPE_CUSTOM_APPWIDGET; 2771 if (isWidget) { 2772 int animationType = resizeOnDrop ? ANIMATE_INTO_POSITION_AND_RESIZE : 2773 ANIMATE_INTO_POSITION_AND_DISAPPEAR; 2774 animateWidgetDrop(info, parent, d.dragView, 2775 onCompleteRunnable, animationType, cell, false); 2776 } else { 2777 int duration = snapScreen < 0 ? 2778 WorkspaceStateTransitionAnimation.SCROLL_TO_CURRENT_PAGE : 2779 ADJACENT_SCREEN_DROP_DURATION; 2780 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2781 onCompleteRunnable, this); 2782 } 2783 } else { 2784 d.deferDragViewCleanupPostAnimation = false; 2785 cell.setVisibility(VISIBLE); 2786 } 2787 parent.onDropChild(cell); 2788 } 2789 } 2790 2791 public void setFinalScrollForPageChange(int pageIndex) { 2792 CellLayout cl = (CellLayout) getChildAt(pageIndex); 2793 if (cl != null) { 2794 mSavedScrollX = getScrollX(); 2795 mSavedTranslationX = cl.getTranslationX(); 2796 mSavedRotationY = cl.getRotationY(); 2797 final int newX = getScrollForPage(pageIndex); 2798 setScrollX(newX); 2799 cl.setTranslationX(0f); 2800 cl.setRotationY(0f); 2801 } 2802 } 2803 2804 public void resetFinalScrollForPageChange(int pageIndex) { 2805 if (pageIndex >= 0) { 2806 CellLayout cl = (CellLayout) getChildAt(pageIndex); 2807 setScrollX(mSavedScrollX); 2808 cl.setTranslationX(mSavedTranslationX); 2809 cl.setRotationY(mSavedRotationY); 2810 } 2811 } 2812 2813 public void getViewLocationRelativeToSelf(View v, int[] location) { 2814 getLocationInWindow(location); 2815 int x = location[0]; 2816 int y = location[1]; 2817 2818 v.getLocationInWindow(location); 2819 int vX = location[0]; 2820 int vY = location[1]; 2821 2822 location[0] = vX - x; 2823 location[1] = vY - y; 2824 } 2825 2826 @Override 2827 public void onDragEnter(DragObject d) { 2828 if (ENFORCE_DRAG_EVENT_ORDER) { 2829 enfoceDragParity("onDragEnter", 1, 1); 2830 } 2831 2832 mCreateUserFolderOnDrop = false; 2833 mAddToExistingFolderOnDrop = false; 2834 2835 mDropToLayout = null; 2836 CellLayout layout = getCurrentDropLayout(); 2837 setCurrentDropLayout(layout); 2838 setCurrentDragOverlappingLayout(layout); 2839 2840 if (!workspaceInModalState()) { 2841 mLauncher.getDragLayer().showPageHints(); 2842 } 2843 } 2844 2845 /** Return a rect that has the cellWidth/cellHeight (left, top), and 2846 * widthGap/heightGap (right, bottom) */ 2847 static Rect getCellLayoutMetrics(Launcher launcher, int orientation) { 2848 LauncherAppState app = LauncherAppState.getInstance(); 2849 InvariantDeviceProfile inv = app.getInvariantDeviceProfile(); 2850 2851 Display display = launcher.getWindowManager().getDefaultDisplay(); 2852 Point smallestSize = new Point(); 2853 Point largestSize = new Point(); 2854 display.getCurrentSizeRange(smallestSize, largestSize); 2855 int countX = (int) inv.numColumns; 2856 int countY = (int) inv.numRows; 2857 boolean isLayoutRtl = Utilities.isRtl(launcher.getResources()); 2858 if (orientation == CellLayout.LANDSCAPE) { 2859 if (mLandscapeCellLayoutMetrics == null) { 2860 Rect padding = inv.landscapeProfile.getWorkspacePadding(isLayoutRtl); 2861 int width = largestSize.x - padding.left - padding.right; 2862 int height = smallestSize.y - padding.top - padding.bottom; 2863 mLandscapeCellLayoutMetrics = new Rect(); 2864 mLandscapeCellLayoutMetrics.set( 2865 DeviceProfile.calculateCellWidth(width, countX), 2866 DeviceProfile.calculateCellHeight(height, countY), 0, 0); 2867 } 2868 return mLandscapeCellLayoutMetrics; 2869 } else if (orientation == CellLayout.PORTRAIT) { 2870 if (mPortraitCellLayoutMetrics == null) { 2871 Rect padding = inv.portraitProfile.getWorkspacePadding(isLayoutRtl); 2872 int width = smallestSize.x - padding.left - padding.right; 2873 int height = largestSize.y - padding.top - padding.bottom; 2874 mPortraitCellLayoutMetrics = new Rect(); 2875 mPortraitCellLayoutMetrics.set( 2876 DeviceProfile.calculateCellWidth(width, countX), 2877 DeviceProfile.calculateCellHeight(height, countY), 0, 0); 2878 } 2879 return mPortraitCellLayoutMetrics; 2880 } 2881 return null; 2882 } 2883 2884 @Override 2885 public void onDragExit(DragObject d) { 2886 if (ENFORCE_DRAG_EVENT_ORDER) { 2887 enfoceDragParity("onDragExit", -1, 0); 2888 } 2889 2890 // Here we store the final page that will be dropped to, if the workspace in fact 2891 // receives the drop 2892 if (mInScrollArea) { 2893 if (isPageMoving()) { 2894 // If the user drops while the page is scrolling, we should use that page as the 2895 // destination instead of the page that is being hovered over. 2896 mDropToLayout = (CellLayout) getPageAt(getNextPage()); 2897 } else { 2898 mDropToLayout = mDragOverlappingLayout; 2899 } 2900 } else { 2901 mDropToLayout = mDragTargetLayout; 2902 } 2903 2904 if (mDragMode == DRAG_MODE_CREATE_FOLDER) { 2905 mCreateUserFolderOnDrop = true; 2906 } else if (mDragMode == DRAG_MODE_ADD_TO_FOLDER) { 2907 mAddToExistingFolderOnDrop = true; 2908 } 2909 2910 // Reset the scroll area and previous drag target 2911 onResetScrollArea(); 2912 setCurrentDropLayout(null); 2913 setCurrentDragOverlappingLayout(null); 2914 2915 mSpringLoadedDragController.cancel(); 2916 2917 mLauncher.getDragLayer().hidePageHints(); 2918 } 2919 2920 private void enfoceDragParity(String event, int update, int expectedValue) { 2921 enfoceDragParity(this, event, update, expectedValue); 2922 for (int i = 0; i < getChildCount(); i++) { 2923 enfoceDragParity(getChildAt(i), event, update, expectedValue); 2924 } 2925 } 2926 2927 private void enfoceDragParity(View v, String event, int update, int expectedValue) { 2928 Object tag = v.getTag(R.id.drag_event_parity); 2929 int value = tag == null ? 0 : (Integer) tag; 2930 value += update; 2931 v.setTag(R.id.drag_event_parity, value); 2932 2933 if (value != expectedValue) { 2934 Log.e(TAG, event + ": Drag contract violated: " + value); 2935 } 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 DeviceProfile grid = mLauncher.getDeviceProfile(); 3042 r = grid.getHotseatRect(); 3043 if (r.contains(mTempPt[0], mTempPt[1])) { 3044 return true; 3045 } 3046 return false; 3047 } 3048 3049 void mapPointFromSelfToHotseatLayout(Hotseat hotseat, float[] xy) { 3050 mTempPt[0] = (int) xy[0]; 3051 mTempPt[1] = (int) xy[1]; 3052 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(this, mTempPt, true); 3053 mLauncher.getDragLayer().mapCoordInSelfToDescendent(hotseat.getLayout(), mTempPt); 3054 3055 xy[0] = mTempPt[0]; 3056 xy[1] = mTempPt[1]; 3057 } 3058 3059 /* 3060 * 3061 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 3062 * the parent View's coordinate space. The argument xy is modified with the return result. 3063 * 3064 */ 3065 void mapPointFromChildToSelf(View v, float[] xy) { 3066 xy[0] += v.getLeft(); 3067 xy[1] += v.getTop(); 3068 } 3069 3070 static private float squaredDistance(float[] point1, float[] point2) { 3071 float distanceX = point1[0] - point2[0]; 3072 float distanceY = point2[1] - point2[1]; 3073 return distanceX * distanceX + distanceY * distanceY; 3074 } 3075 3076 /* 3077 * 3078 * This method returns the CellLayout that is currently being dragged to. In order to drag 3079 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 3080 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 3081 * 3082 * Return null if no CellLayout is currently being dragged over 3083 * 3084 */ 3085 private CellLayout findMatchingPageForDragOver( 3086 DragView dragView, float originX, float originY, boolean exact) { 3087 // We loop through all the screens (ie CellLayouts) and see which ones overlap 3088 // with the item being dragged and then choose the one that's closest to the touch point 3089 final int screenCount = getChildCount(); 3090 CellLayout bestMatchingScreen = null; 3091 float smallestDistSoFar = Float.MAX_VALUE; 3092 3093 for (int i = 0; i < screenCount; i++) { 3094 // The custom content screen is not a valid drag over option 3095 if (mScreenOrder.get(i) == CUSTOM_CONTENT_SCREEN_ID) { 3096 continue; 3097 } 3098 3099 CellLayout cl = (CellLayout) getChildAt(i); 3100 3101 final float[] touchXy = {originX, originY}; 3102 // Transform the touch coordinates to the CellLayout's local coordinates 3103 // If the touch point is within the bounds of the cell layout, we can return immediately 3104 cl.getMatrix().invert(mTempInverseMatrix); 3105 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 3106 3107 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 3108 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 3109 return cl; 3110 } 3111 3112 if (!exact) { 3113 // Get the center of the cell layout in screen coordinates 3114 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 3115 cellLayoutCenter[0] = cl.getWidth()/2; 3116 cellLayoutCenter[1] = cl.getHeight()/2; 3117 mapPointFromChildToSelf(cl, cellLayoutCenter); 3118 3119 touchXy[0] = originX; 3120 touchXy[1] = originY; 3121 3122 // Calculate the distance between the center of the CellLayout 3123 // and the touch point 3124 float dist = squaredDistance(touchXy, cellLayoutCenter); 3125 3126 if (dist < smallestDistSoFar) { 3127 smallestDistSoFar = dist; 3128 bestMatchingScreen = cl; 3129 } 3130 } 3131 } 3132 return bestMatchingScreen; 3133 } 3134 3135 private boolean isDragWidget(DragObject d) { 3136 return (d.dragInfo instanceof LauncherAppWidgetInfo || 3137 d.dragInfo instanceof PendingAddWidgetInfo); 3138 } 3139 private boolean isExternalDragWidget(DragObject d) { 3140 return d.dragSource != this && isDragWidget(d); 3141 } 3142 3143 public void onDragOver(DragObject d) { 3144 // Skip drag over events while we are dragging over side pages 3145 if (mInScrollArea || !transitionStateShouldAllowDrop()) return; 3146 3147 Rect r = new Rect(); 3148 CellLayout layout = null; 3149 ItemInfo item = (ItemInfo) d.dragInfo; 3150 if (item == null) { 3151 if (LauncherAppState.isDogfoodBuild()) { 3152 throw new NullPointerException("DragObject has null info"); 3153 } 3154 return; 3155 } 3156 3157 // Ensure that we have proper spans for the item that we are dropping 3158 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 3159 mDragViewVisualCenter = d.getVisualCenter(mDragViewVisualCenter); 3160 3161 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 3162 // Identify whether we have dragged over a side page 3163 if (workspaceInModalState()) { 3164 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 3165 if (isPointInSelfOverHotseat(d.x, d.y, r)) { 3166 layout = mLauncher.getHotseat().getLayout(); 3167 } 3168 } 3169 if (layout == null) { 3170 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false); 3171 } 3172 if (layout != mDragTargetLayout) { 3173 setCurrentDropLayout(layout); 3174 setCurrentDragOverlappingLayout(layout); 3175 3176 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 3177 if (isInSpringLoadedMode) { 3178 if (mLauncher.isHotseatLayout(layout)) { 3179 mSpringLoadedDragController.cancel(); 3180 } else { 3181 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 3182 } 3183 } 3184 } 3185 } else { 3186 // Test to see if we are over the hotseat otherwise just use the current page 3187 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 3188 if (isPointInSelfOverHotseat(d.x, d.y, r)) { 3189 layout = mLauncher.getHotseat().getLayout(); 3190 } 3191 } 3192 if (layout == null) { 3193 layout = getCurrentDropLayout(); 3194 } 3195 if (layout != mDragTargetLayout) { 3196 setCurrentDropLayout(layout); 3197 setCurrentDragOverlappingLayout(layout); 3198 } 3199 } 3200 3201 // Handle the drag over 3202 if (mDragTargetLayout != null) { 3203 // We want the point to be mapped to the dragTarget. 3204 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 3205 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 3206 } else { 3207 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 3208 } 3209 3210 ItemInfo info = (ItemInfo) d.dragInfo; 3211 3212 int minSpanX = item.spanX; 3213 int minSpanY = item.spanY; 3214 if (item.minSpanX > 0 && item.minSpanY > 0) { 3215 minSpanX = item.minSpanX; 3216 minSpanY = item.minSpanY; 3217 } 3218 3219 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 3220 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, 3221 mDragTargetLayout, mTargetCell); 3222 int reorderX = mTargetCell[0]; 3223 int reorderY = mTargetCell[1]; 3224 3225 setCurrentDropOverCell(mTargetCell[0], mTargetCell[1]); 3226 3227 float targetCellDistance = mDragTargetLayout.getDistanceFromCell( 3228 mDragViewVisualCenter[0], mDragViewVisualCenter[1], mTargetCell); 3229 3230 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 3231 mTargetCell[1]); 3232 3233 manageFolderFeedback(info, mDragTargetLayout, mTargetCell, 3234 targetCellDistance, dragOverView, d.accessibleDrag); 3235 3236 boolean nearestDropOccupied = mDragTargetLayout.isNearestDropLocationOccupied((int) 3237 mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], item.spanX, 3238 item.spanY, child, mTargetCell); 3239 3240 if (!nearestDropOccupied) { 3241 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 3242 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 3243 mTargetCell[0], mTargetCell[1], item.spanX, item.spanY, false, 3244 d.dragView.getDragVisualizeOffset(), d.dragView.getDragRegion()); 3245 } else if ((mDragMode == DRAG_MODE_NONE || mDragMode == DRAG_MODE_REORDER) 3246 && !mReorderAlarm.alarmPending() && (mLastReorderX != reorderX || 3247 mLastReorderY != reorderY)) { 3248 3249 int[] resultSpan = new int[2]; 3250 mDragTargetLayout.performReorder((int) mDragViewVisualCenter[0], 3251 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, item.spanX, item.spanY, 3252 child, mTargetCell, resultSpan, CellLayout.MODE_SHOW_REORDER_HINT); 3253 3254 // Otherwise, if we aren't adding to or creating a folder and there's no pending 3255 // reorder, then we schedule a reorder 3256 ReorderAlarmListener listener = new ReorderAlarmListener(mDragViewVisualCenter, 3257 minSpanX, minSpanY, item.spanX, item.spanY, d.dragView, child); 3258 mReorderAlarm.setOnAlarmListener(listener); 3259 mReorderAlarm.setAlarm(REORDER_TIMEOUT); 3260 } 3261 3262 if (mDragMode == DRAG_MODE_CREATE_FOLDER || mDragMode == DRAG_MODE_ADD_TO_FOLDER || 3263 !nearestDropOccupied) { 3264 if (mDragTargetLayout != null) { 3265 mDragTargetLayout.revertTempState(); 3266 } 3267 } 3268 } 3269 } 3270 3271 private void manageFolderFeedback(ItemInfo info, CellLayout targetLayout, 3272 int[] targetCell, float distance, View dragOverView, boolean accessibleDrag) { 3273 boolean userFolderPending = willCreateUserFolder(info, targetLayout, targetCell, distance, 3274 false); 3275 if (mDragMode == DRAG_MODE_NONE && userFolderPending && 3276 !mFolderCreationAlarm.alarmPending()) { 3277 3278 FolderCreationAlarmListener listener = new 3279 FolderCreationAlarmListener(targetLayout, targetCell[0], targetCell[1]); 3280 3281 if (!accessibleDrag) { 3282 mFolderCreationAlarm.setOnAlarmListener(listener); 3283 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 3284 } else { 3285 listener.onAlarm(mFolderCreationAlarm); 3286 } 3287 return; 3288 } 3289 3290 boolean willAddToFolder = 3291 willAddToExistingUserFolder(info, targetLayout, targetCell, distance); 3292 3293 if (willAddToFolder && mDragMode == DRAG_MODE_NONE) { 3294 mDragOverFolderIcon = ((FolderIcon) dragOverView); 3295 mDragOverFolderIcon.onDragEnter(info); 3296 if (targetLayout != null) { 3297 targetLayout.clearDragOutlines(); 3298 } 3299 setDragMode(DRAG_MODE_ADD_TO_FOLDER); 3300 return; 3301 } 3302 3303 if (mDragMode == DRAG_MODE_ADD_TO_FOLDER && !willAddToFolder) { 3304 setDragMode(DRAG_MODE_NONE); 3305 } 3306 if (mDragMode == DRAG_MODE_CREATE_FOLDER && !userFolderPending) { 3307 setDragMode(DRAG_MODE_NONE); 3308 } 3309 3310 return; 3311 } 3312 3313 class FolderCreationAlarmListener implements OnAlarmListener { 3314 CellLayout layout; 3315 int cellX; 3316 int cellY; 3317 3318 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 3319 this.layout = layout; 3320 this.cellX = cellX; 3321 this.cellY = cellY; 3322 } 3323 3324 public void onAlarm(Alarm alarm) { 3325 if (mDragFolderRingAnimator != null) { 3326 // This shouldn't happen ever, but just in case, make sure we clean up the mess. 3327 mDragFolderRingAnimator.animateToNaturalState(); 3328 } 3329 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 3330 mDragFolderRingAnimator.setCell(cellX, cellY); 3331 mDragFolderRingAnimator.setCellLayout(layout); 3332 mDragFolderRingAnimator.animateToAcceptState(); 3333 layout.showFolderAccept(mDragFolderRingAnimator); 3334 layout.clearDragOutlines(); 3335 setDragMode(DRAG_MODE_CREATE_FOLDER); 3336 } 3337 } 3338 3339 class ReorderAlarmListener implements OnAlarmListener { 3340 float[] dragViewCenter; 3341 int minSpanX, minSpanY, spanX, spanY; 3342 DragView dragView; 3343 View child; 3344 3345 public ReorderAlarmListener(float[] dragViewCenter, int minSpanX, int minSpanY, int spanX, 3346 int spanY, DragView dragView, View child) { 3347 this.dragViewCenter = dragViewCenter; 3348 this.minSpanX = minSpanX; 3349 this.minSpanY = minSpanY; 3350 this.spanX = spanX; 3351 this.spanY = spanY; 3352 this.child = child; 3353 this.dragView = dragView; 3354 } 3355 3356 public void onAlarm(Alarm alarm) { 3357 int[] resultSpan = new int[2]; 3358 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 3359 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, mDragTargetLayout, 3360 mTargetCell); 3361 mLastReorderX = mTargetCell[0]; 3362 mLastReorderY = mTargetCell[1]; 3363 3364 mTargetCell = mDragTargetLayout.performReorder((int) mDragViewVisualCenter[0], 3365 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 3366 child, mTargetCell, resultSpan, CellLayout.MODE_DRAG_OVER); 3367 3368 if (mTargetCell[0] < 0 || mTargetCell[1] < 0) { 3369 mDragTargetLayout.revertTempState(); 3370 } else { 3371 setDragMode(DRAG_MODE_REORDER); 3372 } 3373 3374 boolean resize = resultSpan[0] != spanX || resultSpan[1] != spanY; 3375 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 3376 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 3377 mTargetCell[0], mTargetCell[1], resultSpan[0], resultSpan[1], resize, 3378 dragView.getDragVisualizeOffset(), dragView.getDragRegion()); 3379 } 3380 } 3381 3382 @Override 3383 public void getHitRectRelativeToDragLayer(Rect outRect) { 3384 // We want the workspace to have the whole area of the display (it will find the correct 3385 // cell layout to drop to in the existing drag/drop logic. 3386 mLauncher.getDragLayer().getDescendantRectRelativeToSelf(this, outRect); 3387 } 3388 3389 /** 3390 * Add the item specified by dragInfo to the given layout. 3391 * @return true if successful 3392 */ 3393 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 3394 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 3395 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 3396 return true; 3397 } 3398 mLauncher.showOutOfSpaceMessage(mLauncher.isHotseatLayout(layout)); 3399 return false; 3400 } 3401 3402 private void onDropExternal(int[] touchXY, Object dragInfo, 3403 CellLayout cellLayout, boolean insertAtFirst) { 3404 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 3405 } 3406 3407 /** 3408 * Drop an item that didn't originate on one of the workspace screens. 3409 * It may have come from Launcher (e.g. from all apps or customize), or it may have 3410 * come from another app altogether. 3411 * 3412 * NOTE: This can also be called when we are outside of a drag event, when we want 3413 * to add an item to one of the workspace screens. 3414 */ 3415 private void onDropExternal(final int[] touchXY, final Object dragInfo, 3416 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 3417 final Runnable exitSpringLoadedRunnable = new Runnable() { 3418 @Override 3419 public void run() { 3420 mLauncher.exitSpringLoadedDragModeDelayed(true, 3421 Launcher.EXIT_SPRINGLOADED_MODE_SHORT_TIMEOUT, null); 3422 } 3423 }; 3424 3425 ItemInfo info = (ItemInfo) dragInfo; 3426 int spanX = info.spanX; 3427 int spanY = info.spanY; 3428 if (mDragInfo != null) { 3429 spanX = mDragInfo.spanX; 3430 spanY = mDragInfo.spanY; 3431 } 3432 3433 final long container = mLauncher.isHotseatLayout(cellLayout) ? 3434 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 3435 LauncherSettings.Favorites.CONTAINER_DESKTOP; 3436 final long screenId = getIdForScreen(cellLayout); 3437 if (!mLauncher.isHotseatLayout(cellLayout) 3438 && screenId != getScreenIdForPageIndex(mCurrentPage) 3439 && mState != State.SPRING_LOADED) { 3440 snapToScreenId(screenId, null); 3441 } 3442 3443 if (info instanceof PendingAddItemInfo) { 3444 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 3445 3446 boolean findNearestVacantCell = true; 3447 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 3448 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3449 cellLayout, mTargetCell); 3450 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3451 mDragViewVisualCenter[1], mTargetCell); 3452 if (willCreateUserFolder((ItemInfo) d.dragInfo, cellLayout, mTargetCell, 3453 distance, true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 3454 cellLayout, mTargetCell, distance)) { 3455 findNearestVacantCell = false; 3456 } 3457 } 3458 3459 final ItemInfo item = (ItemInfo) d.dragInfo; 3460 boolean updateWidgetSize = false; 3461 if (findNearestVacantCell) { 3462 int minSpanX = item.spanX; 3463 int minSpanY = item.spanY; 3464 if (item.minSpanX > 0 && item.minSpanY > 0) { 3465 minSpanX = item.minSpanX; 3466 minSpanY = item.minSpanY; 3467 } 3468 int[] resultSpan = new int[2]; 3469 mTargetCell = cellLayout.performReorder((int) mDragViewVisualCenter[0], 3470 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, info.spanX, info.spanY, 3471 null, mTargetCell, resultSpan, CellLayout.MODE_ON_DROP_EXTERNAL); 3472 3473 if (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY) { 3474 updateWidgetSize = true; 3475 } 3476 item.spanX = resultSpan[0]; 3477 item.spanY = resultSpan[1]; 3478 } 3479 3480 Runnable onAnimationCompleteRunnable = new Runnable() { 3481 @Override 3482 public void run() { 3483 // Normally removeExtraEmptyScreen is called in Workspace#onDragEnd, but when 3484 // adding an item that may not be dropped right away (due to a config activity) 3485 // we defer the removal until the activity returns. 3486 deferRemoveExtraEmptyScreen(); 3487 3488 // When dragging and dropping from customization tray, we deal with creating 3489 // widgets/shortcuts/folders in a slightly different way 3490 mLauncher.addPendingItem(pendingInfo, container, screenId, mTargetCell, 3491 item.spanX, item.spanY); 3492 } 3493 }; 3494 boolean isWidget = pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET 3495 || pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_CUSTOM_APPWIDGET; 3496 3497 View finalView = isWidget ? ((PendingAddWidgetInfo) pendingInfo).boundWidget : null; 3498 3499 if (finalView instanceof AppWidgetHostView && updateWidgetSize) { 3500 AppWidgetHostView awhv = (AppWidgetHostView) finalView; 3501 AppWidgetResizeFrame.updateWidgetSizeRanges(awhv, mLauncher, item.spanX, 3502 item.spanY); 3503 } 3504 3505 int animationStyle = ANIMATE_INTO_POSITION_AND_DISAPPEAR; 3506 if (isWidget && ((PendingAddWidgetInfo) pendingInfo).info != null && 3507 ((PendingAddWidgetInfo) pendingInfo).info.configure != null) { 3508 animationStyle = ANIMATE_INTO_POSITION_AND_REMAIN; 3509 } 3510 animateWidgetDrop(info, cellLayout, d.dragView, onAnimationCompleteRunnable, 3511 animationStyle, finalView, true); 3512 } else { 3513 // This is for other drag/drop cases, like dragging from All Apps 3514 View view = null; 3515 3516 switch (info.itemType) { 3517 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 3518 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3519 if (info.container == NO_ID && info instanceof AppInfo) { 3520 // Came from all apps -- make a copy 3521 info = ((AppInfo) info).makeShortcut(); 3522 } 3523 view = mLauncher.createShortcut(cellLayout, (ShortcutInfo) info); 3524 break; 3525 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 3526 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 3527 (FolderInfo) info, mIconCache); 3528 break; 3529 default: 3530 throw new IllegalStateException("Unknown item type: " + info.itemType); 3531 } 3532 3533 // First we find the cell nearest to point at which the item is 3534 // dropped, without any consideration to whether there is an item there. 3535 if (touchXY != null) { 3536 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3537 cellLayout, mTargetCell); 3538 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3539 mDragViewVisualCenter[1], mTargetCell); 3540 d.postAnimationRunnable = exitSpringLoadedRunnable; 3541 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, distance, 3542 true, d.dragView, d.postAnimationRunnable)) { 3543 return; 3544 } 3545 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, distance, d, 3546 true)) { 3547 return; 3548 } 3549 } 3550 3551 if (touchXY != null) { 3552 // when dragging and dropping, just find the closest free spot 3553 mTargetCell = cellLayout.performReorder((int) mDragViewVisualCenter[0], 3554 (int) mDragViewVisualCenter[1], 1, 1, 1, 1, 3555 null, mTargetCell, null, CellLayout.MODE_ON_DROP_EXTERNAL); 3556 } else { 3557 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3558 } 3559 // Add the item to DB before adding to screen ensures that the container and other 3560 // values of the info is properly updated. 3561 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screenId, 3562 mTargetCell[0], mTargetCell[1]); 3563 3564 addInScreen(view, container, screenId, mTargetCell[0], mTargetCell[1], info.spanX, 3565 info.spanY, insertAtFirst); 3566 cellLayout.onDropChild(view); 3567 cellLayout.getShortcutsAndWidgets().measureChild(view); 3568 3569 if (d.dragView != null) { 3570 // We wrap the animation call in the temporary set and reset of the current 3571 // cellLayout to its final transform -- this means we animate the drag view to 3572 // the correct final location. 3573 setFinalTransitionTransform(cellLayout); 3574 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 3575 exitSpringLoadedRunnable, this); 3576 resetTransitionTransform(cellLayout); 3577 } 3578 } 3579 } 3580 3581 public Bitmap createWidgetBitmap(ItemInfo widgetInfo, View layout) { 3582 int[] unScaledSize = mLauncher.getWorkspace().estimateItemSize(widgetInfo, false); 3583 int visibility = layout.getVisibility(); 3584 layout.setVisibility(VISIBLE); 3585 3586 int width = MeasureSpec.makeMeasureSpec(unScaledSize[0], MeasureSpec.EXACTLY); 3587 int height = MeasureSpec.makeMeasureSpec(unScaledSize[1], MeasureSpec.EXACTLY); 3588 Bitmap b = Bitmap.createBitmap(unScaledSize[0], unScaledSize[1], 3589 Bitmap.Config.ARGB_8888); 3590 mCanvas.setBitmap(b); 3591 3592 layout.measure(width, height); 3593 layout.layout(0, 0, unScaledSize[0], unScaledSize[1]); 3594 layout.draw(mCanvas); 3595 mCanvas.setBitmap(null); 3596 layout.setVisibility(visibility); 3597 return b; 3598 } 3599 3600 private void getFinalPositionForDropAnimation(int[] loc, float[] scaleXY, 3601 DragView dragView, CellLayout layout, ItemInfo info, int[] targetCell, 3602 boolean external, boolean scale) { 3603 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 3604 // location and size on the home screen. 3605 int spanX = info.spanX; 3606 int spanY = info.spanY; 3607 3608 Rect r = estimateItemPosition(layout, info, targetCell[0], targetCell[1], spanX, spanY); 3609 loc[0] = r.left; 3610 loc[1] = r.top; 3611 3612 setFinalTransitionTransform(layout); 3613 float cellLayoutScale = 3614 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(layout, loc, true); 3615 resetTransitionTransform(layout); 3616 3617 float dragViewScaleX; 3618 float dragViewScaleY; 3619 if (scale) { 3620 dragViewScaleX = (1.0f * r.width()) / dragView.getMeasuredWidth(); 3621 dragViewScaleY = (1.0f * r.height()) / dragView.getMeasuredHeight(); 3622 } else { 3623 dragViewScaleX = 1f; 3624 dragViewScaleY = 1f; 3625 } 3626 3627 // The animation will scale the dragView about its center, so we need to center about 3628 // the final location. 3629 loc[0] -= (dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 3630 loc[1] -= (dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 3631 3632 scaleXY[0] = dragViewScaleX * cellLayoutScale; 3633 scaleXY[1] = dragViewScaleY * cellLayoutScale; 3634 } 3635 3636 public void animateWidgetDrop(ItemInfo info, CellLayout cellLayout, DragView dragView, 3637 final Runnable onCompleteRunnable, int animationType, final View finalView, 3638 boolean external) { 3639 Rect from = new Rect(); 3640 mLauncher.getDragLayer().getViewRectRelativeToSelf(dragView, from); 3641 3642 int[] finalPos = new int[2]; 3643 float scaleXY[] = new float[2]; 3644 boolean scalePreview = !(info instanceof PendingAddShortcutInfo); 3645 getFinalPositionForDropAnimation(finalPos, scaleXY, dragView, cellLayout, info, mTargetCell, 3646 external, scalePreview); 3647 3648 Resources res = mLauncher.getResources(); 3649 final int duration = res.getInteger(R.integer.config_dropAnimMaxDuration) - 200; 3650 3651 // In the case where we've prebound the widget, we remove it from the DragLayer 3652 if (finalView instanceof AppWidgetHostView && external) { 3653 mLauncher.getDragLayer().removeView(finalView); 3654 } 3655 3656 boolean isWidget = info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET || 3657 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_CUSTOM_APPWIDGET; 3658 if ((animationType == ANIMATE_INTO_POSITION_AND_RESIZE || external) && finalView != null) { 3659 Bitmap crossFadeBitmap = createWidgetBitmap(info, finalView); 3660 dragView.setCrossFadeBitmap(crossFadeBitmap); 3661 dragView.crossFade((int) (duration * 0.8f)); 3662 } else if (isWidget && external) { 3663 scaleXY[0] = scaleXY[1] = Math.min(scaleXY[0], scaleXY[1]); 3664 } 3665 3666 DragLayer dragLayer = mLauncher.getDragLayer(); 3667 if (animationType == CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION) { 3668 mLauncher.getDragLayer().animateViewIntoPosition(dragView, finalPos, 0f, 0.1f, 0.1f, 3669 DragLayer.ANIMATION_END_DISAPPEAR, onCompleteRunnable, duration); 3670 } else { 3671 int endStyle; 3672 if (animationType == ANIMATE_INTO_POSITION_AND_REMAIN) { 3673 endStyle = DragLayer.ANIMATION_END_REMAIN_VISIBLE; 3674 } else { 3675 endStyle = DragLayer.ANIMATION_END_DISAPPEAR;; 3676 } 3677 3678 Runnable onComplete = new Runnable() { 3679 @Override 3680 public void run() { 3681 if (finalView != null) { 3682 finalView.setVisibility(VISIBLE); 3683 } 3684 if (onCompleteRunnable != null) { 3685 onCompleteRunnable.run(); 3686 } 3687 } 3688 }; 3689 dragLayer.animateViewIntoPosition(dragView, from.left, from.top, finalPos[0], 3690 finalPos[1], 1, 1, 1, scaleXY[0], scaleXY[1], onComplete, endStyle, 3691 duration, this); 3692 } 3693 } 3694 3695 public void setFinalTransitionTransform(CellLayout layout) { 3696 if (isSwitchingState()) { 3697 mCurrentScale = getScaleX(); 3698 setScaleX(mStateTransitionAnimation.getFinalScale()); 3699 setScaleY(mStateTransitionAnimation.getFinalScale()); 3700 } 3701 } 3702 public void resetTransitionTransform(CellLayout layout) { 3703 if (isSwitchingState()) { 3704 setScaleX(mCurrentScale); 3705 setScaleY(mCurrentScale); 3706 } 3707 } 3708 3709 /** 3710 * Return the current {@link CellLayout}, correctly picking the destination 3711 * screen while a scroll is in progress. 3712 */ 3713 public CellLayout getCurrentDropLayout() { 3714 return (CellLayout) getChildAt(getNextPage()); 3715 } 3716 3717 /** 3718 * Return the current CellInfo describing our current drag; this method exists 3719 * so that Launcher can sync this object with the correct info when the activity is created/ 3720 * destroyed 3721 * 3722 */ 3723 public CellLayout.CellInfo getDragInfo() { 3724 return mDragInfo; 3725 } 3726 3727 public int getCurrentPageOffsetFromCustomContent() { 3728 return getNextPage() - numCustomPages(); 3729 } 3730 3731 /** 3732 * Calculate the nearest cell where the given object would be dropped. 3733 * 3734 * pixelX and pixelY should be in the coordinate system of layout 3735 */ 3736 @Thunk int[] findNearestArea(int pixelX, int pixelY, 3737 int spanX, int spanY, CellLayout layout, int[] recycle) { 3738 return layout.findNearestArea( 3739 pixelX, pixelY, spanX, spanY, recycle); 3740 } 3741 3742 void setup(DragController dragController) { 3743 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3744 mDragController = dragController; 3745 3746 // hardware layers on children are enabled on startup, but should be disabled until 3747 // needed 3748 updateChildrenLayersEnabled(false); 3749 } 3750 3751 /** 3752 * Called at the end of a drag which originated on the workspace. 3753 */ 3754 public void onDropCompleted(final View target, final DragObject d, 3755 final boolean isFlingToDelete, final boolean success) { 3756 if (mDeferDropAfterUninstall) { 3757 mDeferredAction = new Runnable() { 3758 public void run() { 3759 onDropCompleted(target, d, isFlingToDelete, success); 3760 mDeferredAction = null; 3761 } 3762 }; 3763 return; 3764 } 3765 3766 boolean beingCalledAfterUninstall = mDeferredAction != null; 3767 3768 if (success && !(beingCalledAfterUninstall && !mUninstallSuccessful)) { 3769 if (target != this && mDragInfo != null) { 3770 removeWorkspaceItem(mDragInfo.cell); 3771 } 3772 } else if (mDragInfo != null) { 3773 final CellLayout cellLayout = mLauncher.getCellLayout( 3774 mDragInfo.container, mDragInfo.screenId); 3775 if (cellLayout != null) { 3776 cellLayout.onDropChild(mDragInfo.cell); 3777 } else if (LauncherAppState.isDogfoodBuild()) { 3778 throw new RuntimeException("Invalid state: cellLayout == null in " 3779 + "Workspace#onDropCompleted. Please file a bug. "); 3780 }; 3781 } 3782 if ((d.cancelled || (beingCalledAfterUninstall && !mUninstallSuccessful)) 3783 && mDragInfo.cell != null) { 3784 mDragInfo.cell.setVisibility(VISIBLE); 3785 } 3786 mDragOutline = null; 3787 mDragInfo = null; 3788 } 3789 3790 /** 3791 * For opposite operation. See {@link #addInScreen}. 3792 */ 3793 public void removeWorkspaceItem(View v) { 3794 CellLayout parentCell = getParentCellLayoutForView(v); 3795 if (parentCell != null) { 3796 parentCell.removeView(v); 3797 } else if (LauncherAppState.isDogfoodBuild()) { 3798 throw new NullPointerException("mDragInfo.cell has null parent"); 3799 } 3800 if (v instanceof DropTarget) { 3801 mDragController.removeDropTarget((DropTarget) v); 3802 } 3803 } 3804 3805 @Override 3806 public void deferCompleteDropAfterUninstallActivity() { 3807 mDeferDropAfterUninstall = true; 3808 } 3809 3810 /// maybe move this into a smaller part 3811 @Override 3812 public void onUninstallActivityReturned(boolean success) { 3813 mDeferDropAfterUninstall = false; 3814 mUninstallSuccessful = success; 3815 if (mDeferredAction != null) { 3816 mDeferredAction.run(); 3817 } 3818 } 3819 3820 void updateItemLocationsInDatabase(CellLayout cl) { 3821 int count = cl.getShortcutsAndWidgets().getChildCount(); 3822 3823 long screenId = getIdForScreen(cl); 3824 int container = Favorites.CONTAINER_DESKTOP; 3825 3826 if (mLauncher.isHotseatLayout(cl)) { 3827 screenId = -1; 3828 container = Favorites.CONTAINER_HOTSEAT; 3829 } 3830 3831 for (int i = 0; i < count; i++) { 3832 View v = cl.getShortcutsAndWidgets().getChildAt(i); 3833 ItemInfo info = (ItemInfo) v.getTag(); 3834 // Null check required as the AllApps button doesn't have an item info 3835 if (info != null && info.requiresDbUpdate) { 3836 info.requiresDbUpdate = false; 3837 LauncherModel.modifyItemInDatabase(mLauncher, info, container, screenId, info.cellX, 3838 info.cellY, info.spanX, info.spanY); 3839 } 3840 } 3841 } 3842 3843 void saveWorkspaceToDb() { 3844 saveWorkspaceScreenToDb((CellLayout) mLauncher.getHotseat().getLayout()); 3845 int count = getChildCount(); 3846 for (int i = 0; i < count; i++) { 3847 CellLayout cl = (CellLayout) getChildAt(i); 3848 saveWorkspaceScreenToDb(cl); 3849 } 3850 } 3851 3852 void saveWorkspaceScreenToDb(CellLayout cl) { 3853 int count = cl.getShortcutsAndWidgets().getChildCount(); 3854 3855 long screenId = getIdForScreen(cl); 3856 int container = Favorites.CONTAINER_DESKTOP; 3857 3858 Hotseat hotseat = mLauncher.getHotseat(); 3859 if (mLauncher.isHotseatLayout(cl)) { 3860 screenId = -1; 3861 container = Favorites.CONTAINER_HOTSEAT; 3862 } 3863 3864 for (int i = 0; i < count; i++) { 3865 View v = cl.getShortcutsAndWidgets().getChildAt(i); 3866 ItemInfo info = (ItemInfo) v.getTag(); 3867 // Null check required as the AllApps button doesn't have an item info 3868 if (info != null) { 3869 int cellX = info.cellX; 3870 int cellY = info.cellY; 3871 if (container == Favorites.CONTAINER_HOTSEAT) { 3872 cellX = hotseat.getCellXFromOrder((int) info.screenId); 3873 cellY = hotseat.getCellYFromOrder((int) info.screenId); 3874 } 3875 LauncherModel.addItemToDatabase(mLauncher, info, container, screenId, cellX, cellY); 3876 } 3877 if (v instanceof FolderIcon) { 3878 FolderIcon fi = (FolderIcon) v; 3879 fi.getFolder().addItemLocationsInDatabase(); 3880 } 3881 } 3882 } 3883 3884 @Override 3885 public float getIntrinsicIconScaleFactor() { 3886 return 1f; 3887 } 3888 3889 @Override 3890 public boolean supportsFlingToDelete() { 3891 return true; 3892 } 3893 3894 @Override 3895 public boolean supportsAppInfoDropTarget() { 3896 return false; 3897 } 3898 3899 @Override 3900 public boolean supportsDeleteDropTarget() { 3901 return true; 3902 } 3903 3904 @Override 3905 public void onFlingToDelete(DragObject d, PointF vec) { 3906 // Do nothing 3907 } 3908 3909 @Override 3910 public void onFlingToDeleteCompleted() { 3911 // Do nothing 3912 } 3913 3914 public boolean isDropEnabled() { 3915 return true; 3916 } 3917 3918 @Override 3919 protected void dispatchRestoreInstanceState(SparseArray<Parcelable> container) { 3920 // We don't dispatch restoreInstanceState to our children using this code path. 3921 // Some pages will be restored immediately as their items are bound immediately, and 3922 // others we will need to wait until after their items are bound. 3923 mSavedStates = container; 3924 } 3925 3926 public void restoreInstanceStateForChild(int child) { 3927 if (mSavedStates != null) { 3928 mRestoredPages.add(child); 3929 CellLayout cl = (CellLayout) getChildAt(child); 3930 if (cl != null) { 3931 cl.restoreInstanceState(mSavedStates); 3932 } 3933 } 3934 } 3935 3936 public void restoreInstanceStateForRemainingPages() { 3937 int count = getChildCount(); 3938 for (int i = 0; i < count; i++) { 3939 if (!mRestoredPages.contains(i)) { 3940 restoreInstanceStateForChild(i); 3941 } 3942 } 3943 mRestoredPages.clear(); 3944 mSavedStates = null; 3945 } 3946 3947 @Override 3948 public void scrollLeft() { 3949 if (!workspaceInModalState() && !mIsSwitchingState) { 3950 super.scrollLeft(); 3951 } 3952 Folder openFolder = getOpenFolder(); 3953 if (openFolder != null) { 3954 openFolder.completeDragExit(); 3955 } 3956 } 3957 3958 @Override 3959 public void scrollRight() { 3960 if (!workspaceInModalState() && !mIsSwitchingState) { 3961 super.scrollRight(); 3962 } 3963 Folder openFolder = getOpenFolder(); 3964 if (openFolder != null) { 3965 openFolder.completeDragExit(); 3966 } 3967 } 3968 3969 @Override 3970 public boolean onEnterScrollArea(int x, int y, int direction) { 3971 // Ignore the scroll area if we are dragging over the hot seat 3972 boolean isPortrait = !LauncherAppState.isScreenLandscape(getContext()); 3973 if (mLauncher.getHotseat() != null && isPortrait) { 3974 Rect r = new Rect(); 3975 mLauncher.getHotseat().getHitRect(r); 3976 if (r.contains(x, y)) { 3977 return false; 3978 } 3979 } 3980 3981 boolean result = false; 3982 if (!workspaceInModalState() && !mIsSwitchingState && getOpenFolder() == null) { 3983 mInScrollArea = true; 3984 3985 final int page = getNextPage() + 3986 (direction == DragController.SCROLL_LEFT ? -1 : 1); 3987 // We always want to exit the current layout to ensure parity of enter / exit 3988 setCurrentDropLayout(null); 3989 3990 if (0 <= page && page < getChildCount()) { 3991 // Ensure that we are not dragging over to the custom content screen 3992 if (getScreenIdForPageIndex(page) == CUSTOM_CONTENT_SCREEN_ID) { 3993 return false; 3994 } 3995 3996 CellLayout layout = (CellLayout) getChildAt(page); 3997 setCurrentDragOverlappingLayout(layout); 3998 3999 // Workspace is responsible for drawing the edge glow on adjacent pages, 4000 // so we need to redraw the workspace when this may have changed. 4001 invalidate(); 4002 result = true; 4003 } 4004 } 4005 return result; 4006 } 4007 4008 @Override 4009 public boolean onExitScrollArea() { 4010 boolean result = false; 4011 if (mInScrollArea) { 4012 invalidate(); 4013 CellLayout layout = getCurrentDropLayout(); 4014 setCurrentDropLayout(layout); 4015 setCurrentDragOverlappingLayout(layout); 4016 4017 result = true; 4018 mInScrollArea = false; 4019 } 4020 return result; 4021 } 4022 4023 private void onResetScrollArea() { 4024 setCurrentDragOverlappingLayout(null); 4025 mInScrollArea = false; 4026 } 4027 4028 /** 4029 * Returns a specific CellLayout 4030 */ 4031 CellLayout getParentCellLayoutForView(View v) { 4032 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 4033 for (CellLayout layout : layouts) { 4034 if (layout.getShortcutsAndWidgets().indexOfChild(v) > -1) { 4035 return layout; 4036 } 4037 } 4038 return null; 4039 } 4040 4041 /** 4042 * Returns a list of all the CellLayouts in the workspace. 4043 */ 4044 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 4045 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 4046 int screenCount = getChildCount(); 4047 for (int screen = 0; screen < screenCount; screen++) { 4048 layouts.add(((CellLayout) getChildAt(screen))); 4049 } 4050 if (mLauncher.getHotseat() != null) { 4051 layouts.add(mLauncher.getHotseat().getLayout()); 4052 } 4053 return layouts; 4054 } 4055 4056 /** 4057 * We should only use this to search for specific children. Do not use this method to modify 4058 * ShortcutsAndWidgetsContainer directly. Includes ShortcutAndWidgetContainers from 4059 * the hotseat and workspace pages 4060 */ 4061 ArrayList<ShortcutAndWidgetContainer> getAllShortcutAndWidgetContainers() { 4062 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 4063 new ArrayList<ShortcutAndWidgetContainer>(); 4064 int screenCount = getChildCount(); 4065 for (int screen = 0; screen < screenCount; screen++) { 4066 childrenLayouts.add(((CellLayout) getChildAt(screen)).getShortcutsAndWidgets()); 4067 } 4068 if (mLauncher.getHotseat() != null) { 4069 childrenLayouts.add(mLauncher.getHotseat().getLayout().getShortcutsAndWidgets()); 4070 } 4071 return childrenLayouts; 4072 } 4073 4074 public Folder getFolderForTag(final Object tag) { 4075 return (Folder) getFirstMatch(new ItemOperator() { 4076 4077 @Override 4078 public boolean evaluate(ItemInfo info, View v, View parent) { 4079 return (v instanceof Folder) && (((Folder) v).getInfo() == tag) 4080 && ((Folder) v).getInfo().opened; 4081 } 4082 }); 4083 } 4084 4085 public View getViewForTag(final Object tag) { 4086 return getFirstMatch(new ItemOperator() { 4087 4088 @Override 4089 public boolean evaluate(ItemInfo info, View v, View parent) { 4090 return info == tag; 4091 } 4092 }); 4093 } 4094 4095 public LauncherAppWidgetHostView getWidgetForAppWidgetId(final int appWidgetId) { 4096 return (LauncherAppWidgetHostView) getFirstMatch(new ItemOperator() { 4097 4098 @Override 4099 public boolean evaluate(ItemInfo info, View v, View parent) { 4100 return (info instanceof LauncherAppWidgetInfo) && 4101 ((LauncherAppWidgetInfo) info).appWidgetId == appWidgetId; 4102 } 4103 }); 4104 } 4105 4106 private View getFirstMatch(final ItemOperator operator) { 4107 final View[] value = new View[1]; 4108 mapOverItems(MAP_NO_RECURSE, new ItemOperator() { 4109 @Override 4110 public boolean evaluate(ItemInfo info, View v, View parent) { 4111 if (operator.evaluate(info, v, parent)) { 4112 value[0] = v; 4113 return true; 4114 } 4115 return false; 4116 } 4117 }); 4118 return value[0]; 4119 } 4120 4121 void clearDropTargets() { 4122 mapOverItems(MAP_NO_RECURSE, new ItemOperator() { 4123 @Override 4124 public boolean evaluate(ItemInfo info, View v, View parent) { 4125 if (v instanceof DropTarget) { 4126 mDragController.removeDropTarget((DropTarget) v); 4127 } 4128 // not done, process all the shortcuts 4129 return false; 4130 } 4131 }); 4132 } 4133 4134 public void disableShortcutsByPackageName(final ArrayList<String> packages, 4135 final UserHandleCompat user, final int reason) { 4136 final HashSet<String> packageNames = new HashSet<String>(); 4137 packageNames.addAll(packages); 4138 4139 mapOverItems(MAP_RECURSE, new ItemOperator() { 4140 @Override 4141 public boolean evaluate(ItemInfo info, View v, View parent) { 4142 if (info instanceof ShortcutInfo && v instanceof BubbleTextView) { 4143 ShortcutInfo shortcutInfo = (ShortcutInfo) info; 4144 ComponentName cn = shortcutInfo.getTargetComponent(); 4145 if (user.equals(shortcutInfo.user) && cn != null 4146 && packageNames.contains(cn.getPackageName())) { 4147 shortcutInfo.isDisabled |= reason; 4148 BubbleTextView shortcut = (BubbleTextView) v; 4149 shortcut.applyFromShortcutInfo(shortcutInfo, mIconCache); 4150 4151 if (parent != null) { 4152 parent.invalidate(); 4153 } 4154 } 4155 } 4156 // process all the shortcuts 4157 return false; 4158 } 4159 }); 4160 } 4161 4162 // Removes ALL items that match a given package name, this is usually called when a package 4163 // has been removed and we want to remove all components (widgets, shortcuts, apps) that 4164 // belong to that package. 4165 void removeItemsByPackageName(final ArrayList<String> packages, final UserHandleCompat user) { 4166 final HashSet<String> packageNames = new HashSet<String>(); 4167 packageNames.addAll(packages); 4168 4169 // Filter out all the ItemInfos that this is going to affect 4170 final HashSet<ItemInfo> infos = new HashSet<ItemInfo>(); 4171 final HashSet<ComponentName> cns = new HashSet<ComponentName>(); 4172 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 4173 for (CellLayout layoutParent : cellLayouts) { 4174 ViewGroup layout = layoutParent.getShortcutsAndWidgets(); 4175 int childCount = layout.getChildCount(); 4176 for (int i = 0; i < childCount; ++i) { 4177 View view = layout.getChildAt(i); 4178 infos.add((ItemInfo) view.getTag()); 4179 } 4180 } 4181 LauncherModel.ItemInfoFilter filter = new LauncherModel.ItemInfoFilter() { 4182 @Override 4183 public boolean filterItem(ItemInfo parent, ItemInfo info, 4184 ComponentName cn) { 4185 if (packageNames.contains(cn.getPackageName()) 4186 && info.user.equals(user)) { 4187 cns.add(cn); 4188 return true; 4189 } 4190 return false; 4191 } 4192 }; 4193 LauncherModel.filterItemInfos(infos, filter); 4194 4195 // Remove the affected components 4196 removeItemsByComponentName(cns, user); 4197 } 4198 4199 /** 4200 * Removes items that match the item info specified. When applications are removed 4201 * as a part of an update, this is called to ensure that other widgets and application 4202 * shortcuts are not removed. 4203 */ 4204 void removeItemsByComponentName(final HashSet<ComponentName> componentNames, 4205 final UserHandleCompat user) { 4206 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 4207 for (final CellLayout layoutParent: cellLayouts) { 4208 final ViewGroup layout = layoutParent.getShortcutsAndWidgets(); 4209 4210 final HashMap<ItemInfo, View> children = new HashMap<ItemInfo, View>(); 4211 for (int j = 0; j < layout.getChildCount(); j++) { 4212 final View view = layout.getChildAt(j); 4213 children.put((ItemInfo) view.getTag(), view); 4214 } 4215 4216 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 4217 final HashMap<FolderInfo, ArrayList<ShortcutInfo>> folderAppsToRemove = 4218 new HashMap<FolderInfo, ArrayList<ShortcutInfo>>(); 4219 LauncherModel.ItemInfoFilter filter = new LauncherModel.ItemInfoFilter() { 4220 @Override 4221 public boolean filterItem(ItemInfo parent, ItemInfo info, 4222 ComponentName cn) { 4223 if (parent instanceof FolderInfo) { 4224 if (componentNames.contains(cn) && info.user.equals(user)) { 4225 FolderInfo folder = (FolderInfo) parent; 4226 ArrayList<ShortcutInfo> appsToRemove; 4227 if (folderAppsToRemove.containsKey(folder)) { 4228 appsToRemove = folderAppsToRemove.get(folder); 4229 } else { 4230 appsToRemove = new ArrayList<ShortcutInfo>(); 4231 folderAppsToRemove.put(folder, appsToRemove); 4232 } 4233 appsToRemove.add((ShortcutInfo) info); 4234 return true; 4235 } 4236 } else { 4237 if (componentNames.contains(cn) && info.user.equals(user)) { 4238 childrenToRemove.add(children.get(info)); 4239 return true; 4240 } 4241 } 4242 return false; 4243 } 4244 }; 4245 LauncherModel.filterItemInfos(children.keySet(), filter); 4246 4247 // Remove all the apps from their folders 4248 for (FolderInfo folder : folderAppsToRemove.keySet()) { 4249 ArrayList<ShortcutInfo> appsToRemove = folderAppsToRemove.get(folder); 4250 for (ShortcutInfo info : appsToRemove) { 4251 folder.remove(info); 4252 } 4253 } 4254 4255 // Remove all the other children 4256 for (View child : childrenToRemove) { 4257 // Note: We can not remove the view directly from CellLayoutChildren as this 4258 // does not re-mark the spaces as unoccupied. 4259 layoutParent.removeViewInLayout(child); 4260 if (child instanceof DropTarget) { 4261 mDragController.removeDropTarget((DropTarget) child); 4262 } 4263 } 4264 4265 if (childrenToRemove.size() > 0) { 4266 layout.requestLayout(); 4267 layout.invalidate(); 4268 } 4269 } 4270 4271 // Strip all the empty screens 4272 stripEmptyScreens(); 4273 } 4274 4275 interface ItemOperator { 4276 /** 4277 * Process the next itemInfo, possibly with side-effect on {@link ItemOperator#value}. 4278 * 4279 * @param info info for the shortcut 4280 * @param view view for the shortcut 4281 * @param parent containing folder, or null 4282 * @return true if done, false to continue the map 4283 */ 4284 public boolean evaluate(ItemInfo info, View view, View parent); 4285 } 4286 4287 /** 4288 * Map the operator over the shortcuts and widgets, return the first-non-null value. 4289 * 4290 * @param recurse true: iterate over folder children. false: op get the folders themselves. 4291 * @param op the operator to map over the shortcuts 4292 */ 4293 void mapOverItems(boolean recurse, ItemOperator op) { 4294 ArrayList<ShortcutAndWidgetContainer> containers = getAllShortcutAndWidgetContainers(); 4295 final int containerCount = containers.size(); 4296 for (int containerIdx = 0; containerIdx < containerCount; containerIdx++) { 4297 ShortcutAndWidgetContainer container = containers.get(containerIdx); 4298 // map over all the shortcuts on the workspace 4299 final int itemCount = container.getChildCount(); 4300 for (int itemIdx = 0; itemIdx < itemCount; itemIdx++) { 4301 View item = container.getChildAt(itemIdx); 4302 ItemInfo info = (ItemInfo) item.getTag(); 4303 if (recurse && info instanceof FolderInfo && item instanceof FolderIcon) { 4304 FolderIcon folder = (FolderIcon) item; 4305 ArrayList<View> folderChildren = folder.getFolder().getItemsInReadingOrder(); 4306 // map over all the children in the folder 4307 final int childCount = folderChildren.size(); 4308 for (int childIdx = 0; childIdx < childCount; childIdx++) { 4309 View child = folderChildren.get(childIdx); 4310 info = (ItemInfo) child.getTag(); 4311 if (op.evaluate(info, child, folder)) { 4312 return; 4313 } 4314 } 4315 } else { 4316 if (op.evaluate(info, item, null)) { 4317 return; 4318 } 4319 } 4320 } 4321 } 4322 } 4323 4324 void updateShortcuts(ArrayList<ShortcutInfo> shortcuts) { 4325 final HashSet<ShortcutInfo> updates = new HashSet<ShortcutInfo>(shortcuts); 4326 mapOverItems(MAP_RECURSE, new ItemOperator() { 4327 @Override 4328 public boolean evaluate(ItemInfo info, View v, View parent) { 4329 if (info instanceof ShortcutInfo && v instanceof BubbleTextView && 4330 updates.contains(info)) { 4331 ShortcutInfo si = (ShortcutInfo) info; 4332 BubbleTextView shortcut = (BubbleTextView) v; 4333 boolean oldPromiseState = getTextViewIcon(shortcut) 4334 instanceof PreloadIconDrawable; 4335 shortcut.applyFromShortcutInfo(si, mIconCache, 4336 si.isPromise() != oldPromiseState); 4337 4338 if (parent != null) { 4339 parent.invalidate(); 4340 } 4341 } 4342 // process all the shortcuts 4343 return false; 4344 } 4345 }); 4346 } 4347 4348 public void removeAbandonedPromise(String packageName, UserHandleCompat user) { 4349 ArrayList<String> packages = new ArrayList<String>(1); 4350 packages.add(packageName); 4351 LauncherModel.deletePackageFromDatabase(mLauncher, packageName, user); 4352 removeItemsByPackageName(packages, user); 4353 } 4354 4355 public void updateRestoreItems(final HashSet<ItemInfo> updates) { 4356 mapOverItems(MAP_RECURSE, new ItemOperator() { 4357 @Override 4358 public boolean evaluate(ItemInfo info, View v, View parent) { 4359 if (info instanceof ShortcutInfo && v instanceof BubbleTextView 4360 && updates.contains(info)) { 4361 ((BubbleTextView) v).applyState(false); 4362 } else if (v instanceof PendingAppWidgetHostView 4363 && info instanceof LauncherAppWidgetInfo 4364 && updates.contains(info)) { 4365 ((PendingAppWidgetHostView) v).applyState(); 4366 } 4367 // process all the shortcuts 4368 return false; 4369 } 4370 }); 4371 } 4372 4373 void widgetsRestored(ArrayList<LauncherAppWidgetInfo> changedInfo) { 4374 if (!changedInfo.isEmpty()) { 4375 DeferredWidgetRefresh widgetRefresh = new DeferredWidgetRefresh(changedInfo, 4376 mLauncher.getAppWidgetHost()); 4377 if (LauncherModel.getProviderInfo(getContext(), 4378 changedInfo.get(0).providerName, 4379 changedInfo.get(0).user) != null) { 4380 // Re-inflate the widgets which have changed status 4381 widgetRefresh.run(); 4382 } else { 4383 // widgetRefresh will automatically run when the packages are updated. 4384 // For now just update the progress bars 4385 for (LauncherAppWidgetInfo info : changedInfo) { 4386 if (info.hostView instanceof PendingAppWidgetHostView) { 4387 info.installProgress = 100; 4388 ((PendingAppWidgetHostView) info.hostView).applyState(); 4389 } 4390 } 4391 } 4392 } 4393 } 4394 4395 private void moveToScreen(int page, boolean animate) { 4396 if (!workspaceInModalState()) { 4397 if (animate) { 4398 snapToPage(page); 4399 } else { 4400 setCurrentPage(page); 4401 } 4402 } 4403 View child = getChildAt(page); 4404 if (child != null) { 4405 child.requestFocus(); 4406 } 4407 } 4408 4409 void moveToDefaultScreen(boolean animate) { 4410 moveToScreen(mDefaultPage, animate); 4411 } 4412 4413 void moveToCustomContentScreen(boolean animate) { 4414 if (hasCustomContent()) { 4415 int ccIndex = getPageIndexForScreenId(CUSTOM_CONTENT_SCREEN_ID); 4416 if (animate) { 4417 snapToPage(ccIndex); 4418 } else { 4419 setCurrentPage(ccIndex); 4420 } 4421 View child = getChildAt(ccIndex); 4422 if (child != null) { 4423 child.requestFocus(); 4424 } 4425 } 4426 exitWidgetResizeMode(); 4427 } 4428 4429 @Override 4430 protected PageIndicator.PageMarkerResources getPageIndicatorMarker(int pageIndex) { 4431 long screenId = getScreenIdForPageIndex(pageIndex); 4432 if (screenId == EXTRA_EMPTY_SCREEN_ID) { 4433 int count = mScreenOrder.size() - numCustomPages(); 4434 if (count > 1) { 4435 return new PageIndicator.PageMarkerResources(R.drawable.ic_pageindicator_current, 4436 R.drawable.ic_pageindicator_add); 4437 } 4438 } 4439 4440 return super.getPageIndicatorMarker(pageIndex); 4441 } 4442 4443 protected String getPageIndicatorDescription() { 4444 String settings = getResources().getString(R.string.settings_button_text); 4445 return getCurrentPageDescription() + ", " + settings; 4446 } 4447 4448 protected String getCurrentPageDescription() { 4449 if (hasCustomContent() && getNextPage() == 0) { 4450 return mCustomContentDescription; 4451 } 4452 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 4453 return getPageDescription(page); 4454 } 4455 4456 private String getPageDescription(int page) { 4457 int delta = numCustomPages(); 4458 return String.format(getContext().getString(R.string.workspace_scroll_format), 4459 page + 1 - delta, getChildCount() - delta); 4460 } 4461 4462 public void getLocationInDragLayer(int[] loc) { 4463 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 4464 } 4465 4466 @Override 4467 public void fillInLaunchSourceData(Bundle sourceData) { 4468 sourceData.putString(Stats.SOURCE_EXTRA_CONTAINER, Stats.CONTAINER_HOMESCREEN); 4469 sourceData.putInt(Stats.SOURCE_EXTRA_CONTAINER_PAGE, getCurrentPage()); 4470 } 4471 4472 /** 4473 * Used as a workaround to ensure that the AppWidgetService receives the 4474 * PACKAGE_ADDED broadcast before updating widgets. 4475 */ 4476 private class DeferredWidgetRefresh implements Runnable { 4477 private final ArrayList<LauncherAppWidgetInfo> mInfos; 4478 private final LauncherAppWidgetHost mHost; 4479 private final Handler mHandler; 4480 4481 private boolean mRefreshPending; 4482 4483 public DeferredWidgetRefresh(ArrayList<LauncherAppWidgetInfo> infos, 4484 LauncherAppWidgetHost host) { 4485 mInfos = infos; 4486 mHost = host; 4487 mHandler = new Handler(); 4488 mRefreshPending = true; 4489 4490 mHost.addProviderChangeListener(this); 4491 // Force refresh after 10 seconds, if we don't get the provider changed event. 4492 // This could happen when the provider is no longer available in the app. 4493 mHandler.postDelayed(this, 10000); 4494 } 4495 4496 @Override 4497 public void run() { 4498 mHost.removeProviderChangeListener(this); 4499 mHandler.removeCallbacks(this); 4500 4501 if (!mRefreshPending) { 4502 return; 4503 } 4504 4505 mRefreshPending = false; 4506 4507 for (LauncherAppWidgetInfo info : mInfos) { 4508 if (info.hostView instanceof PendingAppWidgetHostView) { 4509 PendingAppWidgetHostView view = (PendingAppWidgetHostView) info.hostView; 4510 mLauncher.removeAppWidget(info); 4511 4512 CellLayout cl = (CellLayout) view.getParent().getParent(); 4513 // Remove the current widget 4514 cl.removeView(view); 4515 mLauncher.bindAppWidget(info); 4516 } 4517 } 4518 } 4519 } 4520} 4521