Workspace.java revision fe09cb7fe3ec1ab3e7aabd2d0415de61df31c4db
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.launcher3; 18 19import android.animation.Animator; 20import android.animation.AnimatorListenerAdapter; 21import android.animation.AnimatorSet; 22import android.animation.LayoutTransition; 23import android.animation.ObjectAnimator; 24import android.animation.TimeInterpolator; 25import android.animation.ValueAnimator; 26import android.animation.ValueAnimator.AnimatorUpdateListener; 27import android.app.WallpaperManager; 28import android.appwidget.AppWidgetHostView; 29import android.appwidget.AppWidgetProviderInfo; 30import android.content.ComponentName; 31import android.content.Context; 32import android.content.Intent; 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.Point; 39import android.graphics.PointF; 40import android.graphics.Rect; 41import android.graphics.Region.Op; 42import android.graphics.drawable.Drawable; 43import android.net.Uri; 44import android.os.IBinder; 45import android.os.Parcelable; 46import android.util.AttributeSet; 47import android.util.Log; 48import android.util.SparseArray; 49import android.view.Choreographer; 50import android.view.Display; 51import android.view.MotionEvent; 52import android.view.View; 53import android.view.ViewGroup; 54import android.view.animation.DecelerateInterpolator; 55import android.view.animation.Interpolator; 56import android.widget.TextView; 57 58import com.android.launcher3.FolderIcon.FolderRingAnimator; 59import com.android.launcher3.Launcher.CustomContentCallbacks; 60import com.android.launcher3.LauncherSettings.Favorites; 61 62import java.util.ArrayList; 63import java.util.HashMap; 64import java.util.HashSet; 65import java.util.Iterator; 66 67/** 68 * The workspace is a wide area with a wallpaper and a finite number of pages. 69 * Each page contains a number of icons, folders or widgets the user can 70 * interact with. A workspace is meant to be used with a fixed width only. 71 */ 72public class Workspace extends SmoothPagedView 73 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 74 DragController.DragListener, LauncherTransitionable, ViewGroup.OnHierarchyChangeListener { 75 private static final String TAG = "Launcher.Workspace"; 76 77 // Y rotation to apply to the workspace screens 78 private static final float WORKSPACE_OVERSCROLL_ROTATION = 24f; 79 80 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 81 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 82 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 83 84 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 85 private static final int ADJACENT_SCREEN_DROP_DURATION = 300; 86 private static final int FLING_THRESHOLD_VELOCITY = 500; 87 88 private static final float ALPHA_CUTOFF_THRESHOLD = 0.01f; 89 90 // These animators are used to fade the children's outlines 91 private ObjectAnimator mChildrenOutlineFadeInAnimation; 92 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 93 private float mChildrenOutlineAlpha = 0; 94 95 // These properties refer to the background protection gradient used for AllApps and Customize 96 private ValueAnimator mBackgroundFadeInAnimation; 97 private ValueAnimator mBackgroundFadeOutAnimation; 98 private Drawable mBackground; 99 boolean mDrawBackground = true; 100 private float mBackgroundAlpha = 0; 101 102 private static final long CUSTOM_CONTENT_GESTURE_DELAY = 200; 103 private long mTouchDownTime = -1; 104 private long mCustomContentShowTime = -1; 105 106 private LayoutTransition mLayoutTransition; 107 private final WallpaperManager mWallpaperManager; 108 private IBinder mWindowToken; 109 110 private int mOriginalDefaultPage; 111 private int mDefaultPage; 112 113 // The screen id used for the empty screen always present to the right. 114 private final static long EXTRA_EMPTY_SCREEN_ID = -201; 115 private final static long CUSTOM_CONTENT_SCREEN_ID = -301; 116 117 private HashMap<Long, CellLayout> mWorkspaceScreens = new HashMap<Long, CellLayout>(); 118 private ArrayList<Long> mScreenOrder = new ArrayList<Long>(); 119 120 /** 121 * CellInfo for the cell that is currently being dragged 122 */ 123 private CellLayout.CellInfo mDragInfo; 124 125 /** 126 * Target drop area calculated during last acceptDrop call. 127 */ 128 private int[] mTargetCell = new int[2]; 129 private int mDragOverX = -1; 130 private int mDragOverY = -1; 131 132 static Rect mLandscapeCellLayoutMetrics = null; 133 static Rect mPortraitCellLayoutMetrics = null; 134 135 CustomContentCallbacks mCustomContentCallbacks; 136 boolean mCustomContentShowing; 137 138 /** 139 * The CellLayout that is currently being dragged over 140 */ 141 private CellLayout mDragTargetLayout = null; 142 /** 143 * The CellLayout that we will show as glowing 144 */ 145 private CellLayout mDragOverlappingLayout = null; 146 147 /** 148 * The CellLayout which will be dropped to 149 */ 150 private CellLayout mDropToLayout = null; 151 152 private Launcher mLauncher; 153 private IconCache mIconCache; 154 private DragController mDragController; 155 156 // These are temporary variables to prevent having to allocate a new object just to 157 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 158 private int[] mTempCell = new int[2]; 159 private int[] mTempPt = new int[2]; 160 private int[] mTempEstimate = new int[2]; 161 private float[] mDragViewVisualCenter = new float[2]; 162 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 163 private Matrix mTempInverseMatrix = new Matrix(); 164 165 private SpringLoadedDragController mSpringLoadedDragController; 166 private float mSpringLoadedShrinkFactor; 167 private float mOverviewModeShrinkFactor; 168 169 // State variable that indicates whether the pages are small (ie when you're 170 // in all apps or customize mode) 171 172 enum State { NORMAL, SPRING_LOADED, SMALL, OVERVIEW}; 173 private State mState = State.NORMAL; 174 private boolean mIsSwitchingState = false; 175 176 boolean mAnimatingViewIntoPlace = false; 177 boolean mIsDragOccuring = false; 178 boolean mChildrenLayersEnabled = true; 179 180 private boolean mStripScreensOnPageStopMoving = false; 181 182 /** Is the user is dragging an item near the edge of a page? */ 183 private boolean mInScrollArea = false; 184 185 private HolographicOutlineHelper mOutlineHelper; 186 private Bitmap mDragOutline = null; 187 private final Rect mTempRect = new Rect(); 188 private final int[] mTempXY = new int[2]; 189 private int[] mTempVisiblePagesRange = new int[2]; 190 private boolean mOverscrollTransformsSet; 191 public static final int DRAG_BITMAP_PADDING = 2; 192 private boolean mWorkspaceFadeInAdjacentScreens; 193 194 WallpaperOffsetInterpolator mWallpaperOffset; 195 private Runnable mDelayedResizeRunnable; 196 private Runnable mDelayedSnapToPageRunnable; 197 private Point mDisplaySize = new Point(); 198 private int mCameraDistance; 199 200 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 201 private static final int FOLDER_CREATION_TIMEOUT = 0; 202 private static final int REORDER_TIMEOUT = 250; 203 private final Alarm mFolderCreationAlarm = new Alarm(); 204 private final Alarm mReorderAlarm = new Alarm(); 205 private FolderRingAnimator mDragFolderRingAnimator = null; 206 private FolderIcon mDragOverFolderIcon = null; 207 private boolean mCreateUserFolderOnDrop = false; 208 private boolean mAddToExistingFolderOnDrop = false; 209 private DropTarget.DragEnforcer mDragEnforcer; 210 private float mMaxDistanceForFolderCreation; 211 212 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 213 private float mXDown; 214 private float mYDown; 215 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 216 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 217 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 218 219 // Relating to the animation of items being dropped externally 220 public static final int ANIMATE_INTO_POSITION_AND_DISAPPEAR = 0; 221 public static final int ANIMATE_INTO_POSITION_AND_REMAIN = 1; 222 public static final int ANIMATE_INTO_POSITION_AND_RESIZE = 2; 223 public static final int COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION = 3; 224 public static final int CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION = 4; 225 226 // Related to dragging, folder creation and reordering 227 private static final int DRAG_MODE_NONE = 0; 228 private static final int DRAG_MODE_CREATE_FOLDER = 1; 229 private static final int DRAG_MODE_ADD_TO_FOLDER = 2; 230 private static final int DRAG_MODE_REORDER = 3; 231 private int mDragMode = DRAG_MODE_NONE; 232 private int mLastReorderX = -1; 233 private int mLastReorderY = -1; 234 235 private SparseArray<Parcelable> mSavedStates; 236 private final ArrayList<Integer> mRestoredPages = new ArrayList<Integer>(); 237 238 // These variables are used for storing the initial and final values during workspace animations 239 private int mSavedScrollX; 240 private float mSavedRotationY; 241 private float mSavedTranslationX; 242 243 private float mCurrentScale; 244 private float mNewScale; 245 private float[] mOldBackgroundAlphas; 246 private float[] mOldAlphas; 247 private float[] mNewBackgroundAlphas; 248 private float[] mNewAlphas; 249 private int mLastChildCount = -1; 250 private float mTransitionProgress; 251 252 private Runnable mDeferredAction; 253 private boolean mDeferDropAfterUninstall; 254 private boolean mUninstallSuccessful; 255 256 private final Runnable mBindPages = new Runnable() { 257 @Override 258 public void run() { 259 mLauncher.getModel().bindRemainingSynchronousPages(); 260 } 261 }; 262 263 /** 264 * Used to inflate the Workspace from XML. 265 * 266 * @param context The application's context. 267 * @param attrs The attributes set containing the Workspace's customization values. 268 */ 269 public Workspace(Context context, AttributeSet attrs) { 270 this(context, attrs, 0); 271 } 272 273 /** 274 * Used to inflate the Workspace from XML. 275 * 276 * @param context The application's context. 277 * @param attrs The attributes set containing the Workspace's customization values. 278 * @param defStyle Unused. 279 */ 280 public Workspace(Context context, AttributeSet attrs, int defStyle) { 281 super(context, attrs, defStyle); 282 mContentIsRefreshable = false; 283 284 mOutlineHelper = HolographicOutlineHelper.obtain(context); 285 286 mDragEnforcer = new DropTarget.DragEnforcer(context); 287 // With workspace, data is available straight from the get-go 288 setDataIsReady(); 289 290 mLauncher = (Launcher) context; 291 final Resources res = getResources(); 292 mWorkspaceFadeInAdjacentScreens = res.getBoolean(R.bool.config_workspaceFadeAdjacentScreens); 293 mFadeInAdjacentScreens = false; 294 mWallpaperManager = WallpaperManager.getInstance(context); 295 296 TypedArray a = context.obtainStyledAttributes(attrs, 297 R.styleable.Workspace, defStyle, 0); 298 mSpringLoadedShrinkFactor = 299 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 300 mOverviewModeShrinkFactor = 301 res.getInteger(R.integer.config_workspaceOverviewShrinkPercentage) / 100.0f; 302 mCameraDistance = res.getInteger(R.integer.config_cameraDistance); 303 mOriginalDefaultPage = mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 304 a.recycle(); 305 306 setOnHierarchyChangeListener(this); 307 setHapticFeedbackEnabled(false); 308 309 initWorkspace(); 310 311 // Disable multitouch across the workspace/all apps/customize tray 312 setMotionEventSplittingEnabled(true); 313 314 // Unless otherwise specified this view is important for accessibility. 315 if (getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 316 setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 317 } 318 } 319 320 // estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each 321 // dimension if unsuccessful 322 public int[] estimateItemSize(int hSpan, int vSpan, 323 ItemInfo itemInfo, boolean springLoaded) { 324 int[] size = new int[2]; 325 if (getChildCount() > 0) { 326 CellLayout cl = (CellLayout) mLauncher.getWorkspace().getChildAt(0); 327 Rect r = estimateItemPosition(cl, itemInfo, 0, 0, hSpan, vSpan); 328 size[0] = r.width(); 329 size[1] = r.height(); 330 if (springLoaded) { 331 size[0] *= mSpringLoadedShrinkFactor; 332 size[1] *= mSpringLoadedShrinkFactor; 333 } 334 return size; 335 } else { 336 size[0] = Integer.MAX_VALUE; 337 size[1] = Integer.MAX_VALUE; 338 return size; 339 } 340 } 341 342 public Rect estimateItemPosition(CellLayout cl, ItemInfo pendingInfo, 343 int hCell, int vCell, int hSpan, int vSpan) { 344 Rect r = new Rect(); 345 cl.cellToRect(hCell, vCell, hSpan, vSpan, r); 346 return r; 347 } 348 349 public void onDragStart(DragSource source, Object info, int dragAction) { 350 mIsDragOccuring = true; 351 updateChildrenLayersEnabled(false); 352 mLauncher.lockScreenOrientation(); 353 setChildrenBackgroundAlphaMultipliers(1f); 354 // Prevent any Un/InstallShortcutReceivers from updating the db while we are dragging 355 InstallShortcutReceiver.enableInstallQueue(); 356 UninstallShortcutReceiver.enableUninstallQueue(); 357 } 358 359 public void onDragEnd() { 360 mIsDragOccuring = false; 361 updateChildrenLayersEnabled(false); 362 mLauncher.unlockScreenOrientation(false); 363 364 // Re-enable any Un/InstallShortcutReceiver and now process any queued items 365 InstallShortcutReceiver.disableAndFlushInstallQueue(getContext()); 366 UninstallShortcutReceiver.disableAndFlushUninstallQueue(getContext()); 367 } 368 369 /** 370 * Initializes various states for this workspace. 371 */ 372 protected void initWorkspace() { 373 Context context = getContext(); 374 mCurrentPage = mDefaultPage; 375 Launcher.setScreen(mCurrentPage); 376 LauncherAppState app = LauncherAppState.getInstance(); 377 DeviceProfile grid = app.getDynamicGrid().getDeviceProfile(); 378 mIconCache = app.getIconCache(); 379 setWillNotDraw(false); 380 setClipChildren(false); 381 setClipToPadding(false); 382 setChildrenDrawnWithCacheEnabled(true); 383 setMinScale(0.5f); 384 setupLayoutTransition(); 385 386 final Resources res = getResources(); 387 try { 388 mBackground = res.getDrawable(R.drawable.apps_customize_bg); 389 } catch (Resources.NotFoundException e) { 390 // In this case, we will skip drawing background protection 391 } 392 393 mWallpaperOffset = new WallpaperOffsetInterpolator(); 394 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 395 display.getSize(mDisplaySize); 396 397 mMaxDistanceForFolderCreation = (0.55f * grid.iconSizePx); 398 mFlingThresholdVelocity = (int) (FLING_THRESHOLD_VELOCITY * mDensity); 399 } 400 401 private void setupLayoutTransition() { 402 // We want to show layout transitions when pages are deleted, to close the gap. 403 mLayoutTransition = new LayoutTransition(); 404 mLayoutTransition.enableTransitionType(LayoutTransition.DISAPPEARING); 405 mLayoutTransition.enableTransitionType(LayoutTransition.CHANGE_DISAPPEARING); 406 mLayoutTransition.disableTransitionType(LayoutTransition.APPEARING); 407 mLayoutTransition.disableTransitionType(LayoutTransition.CHANGE_APPEARING); 408 setLayoutTransition(mLayoutTransition); 409 } 410 411 @Override 412 protected int getScrollMode() { 413 return SmoothPagedView.X_LARGE_MODE; 414 } 415 416 @Override 417 public void onChildViewAdded(View parent, View child) { 418 if (!(child instanceof CellLayout)) { 419 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 420 } 421 CellLayout cl = ((CellLayout) child); 422 cl.setOnInterceptTouchListener(this); 423 cl.setClickable(true); 424 cl.setContentDescription(getContext().getString( 425 R.string.workspace_description_format, getChildCount())); 426 427 super.onChildViewAdded(parent, child); 428 } 429 430 protected boolean shouldDrawChild(View child) { 431 final CellLayout cl = (CellLayout) child; 432 return super.shouldDrawChild(child) && 433 (cl.getShortcutsAndWidgets().getAlpha() > 0 || 434 cl.getBackgroundAlpha() > 0); 435 } 436 437 /** 438 * @return The open folder on the current screen, or null if there is none 439 */ 440 Folder getOpenFolder() { 441 DragLayer dragLayer = mLauncher.getDragLayer(); 442 int count = dragLayer.getChildCount(); 443 for (int i = 0; i < count; i++) { 444 View child = dragLayer.getChildAt(i); 445 if (child instanceof Folder) { 446 Folder folder = (Folder) child; 447 if (folder.getInfo().opened) 448 return folder; 449 } 450 } 451 return null; 452 } 453 454 boolean isTouchActive() { 455 return mTouchState != TOUCH_STATE_REST; 456 } 457 458 public void removeAllWorkspaceScreens() { 459 Launcher.addDumpLog(TAG, "10249126 - removeAllWorkspaceScreens()", true); 460 // Remove the pages and clear the screen models 461 removeAllViews(); 462 mScreenOrder.clear(); 463 mWorkspaceScreens.clear(); 464 } 465 466 public long insertNewWorkspaceScreenBeforeEmptyScreen(long screenId) { 467 // Find the index to insert this view into. If the empty screen exists, then 468 // insert it before that. 469 int insertIndex = mScreenOrder.indexOf(EXTRA_EMPTY_SCREEN_ID); 470 Launcher.addDumpLog(TAG, "10249126 - insertNewWorkspaceScreenBeforeEmptyScreen(" + insertIndex + ")", true); 471 if (insertIndex < 0) { 472 insertIndex = mScreenOrder.size(); 473 } 474 return insertNewWorkspaceScreen(screenId, insertIndex); 475 } 476 477 public long insertNewWorkspaceScreen(long screenId) { 478 return insertNewWorkspaceScreen(screenId, getChildCount()); 479 } 480 481 public long insertNewWorkspaceScreen(long screenId, int insertIndex) { 482 String log = "10249126 - insertNewWorkspaceScreen(" + screenId + ", " + insertIndex + ")"; 483 Launcher.addDumpLog(TAG, log, true); 484 485 CellLayout newScreen = (CellLayout) 486 mLauncher.getLayoutInflater().inflate(R.layout.workspace_screen, null); 487 488 newScreen.setOnLongClickListener(mLongClickListener); 489 newScreen.setOnClickListener(mLauncher); 490 mWorkspaceScreens.put(screenId, newScreen); 491 mScreenOrder.add(insertIndex, screenId); 492 addView(newScreen, insertIndex); 493 return screenId; 494 } 495 496 public void createCustomContentPage() { 497 Launcher.addDumpLog(TAG, "10249126 - createCustomContentPage()", true); 498 CellLayout customScreen = (CellLayout) 499 mLauncher.getLayoutInflater().inflate(R.layout.workspace_screen, null); 500 501 mWorkspaceScreens.put(CUSTOM_CONTENT_SCREEN_ID, customScreen); 502 mScreenOrder.add(0, CUSTOM_CONTENT_SCREEN_ID); 503 504 // We want no padding on the custom content 505 customScreen.setPadding(0, 0, 0, 0); 506 507 addFullScreenPage(customScreen); 508 509 // Ensure that the current page and default page are maintained. 510 mDefaultPage = mOriginalDefaultPage + 1; 511 setCurrentPage(getCurrentPage() + 1); 512 } 513 514 public void addToCustomContentPage(View customContent, CustomContentCallbacks callbacks) { 515 if (getPageIndexForScreenId(CUSTOM_CONTENT_SCREEN_ID) < 0) { 516 throw new RuntimeException("Expected custom content screen to exist"); 517 } 518 519 // Add the custom content to the full screen custom page 520 CellLayout customScreen = getScreenWithId(CUSTOM_CONTENT_SCREEN_ID); 521 int spanX = customScreen.getCountX(); 522 int spanY = customScreen.getCountY(); 523 CellLayout.LayoutParams lp = new CellLayout.LayoutParams(0, 0, spanX, spanY); 524 lp.canReorder = false; 525 lp.isFullscreen = true; 526 customScreen.addViewToCellLayout(customContent, 0, 0, lp, true); 527 528 mCustomContentCallbacks = callbacks; 529 } 530 531 public long commitExtraEmptyScreen() { 532 Launcher.addDumpLog(TAG, "10249126 - commitExtraEmptyScreen()", true); 533 534 // Write all the logs to disk 535 Launcher.addDumpLog(TAG, "10249126 - commitExtraEmptyScreen() - dumping logs to disk", true); 536 mLauncher.dumpLogsToLocalData(false); 537 538 CellLayout cl = mWorkspaceScreens.get(EXTRA_EMPTY_SCREEN_ID); 539 mWorkspaceScreens.remove(EXTRA_EMPTY_SCREEN_ID); 540 mScreenOrder.remove(EXTRA_EMPTY_SCREEN_ID); 541 542 long newId = LauncherAppState.getLauncherProvider().generateNewScreenId(); 543 mWorkspaceScreens.put(newId, cl); 544 mScreenOrder.add(newId); 545 546 addExtraEmptyScreen(); 547 548 // Update the model for the new screen 549 mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); 550 551 return newId; 552 } 553 554 public void addExtraEmptyScreen() { 555 insertNewWorkspaceScreen(EXTRA_EMPTY_SCREEN_ID); 556 } 557 558 public CellLayout getScreenWithId(long screenId) { 559 Launcher.addDumpLog(TAG, "10249126 - getScreenWithId(" + screenId + ")", true); 560 CellLayout layout = mWorkspaceScreens.get(screenId); 561 return layout; 562 } 563 564 public long getIdForScreen(CellLayout layout) { 565 Launcher.addDumpLog(TAG, "10249126 - getIdForScreen()", true); 566 Iterator<Long> iter = mWorkspaceScreens.keySet().iterator(); 567 while (iter.hasNext()) { 568 long id = iter.next(); 569 if (mWorkspaceScreens.get(id) == layout) { 570 return id; 571 } 572 } 573 return -1; 574 } 575 576 public int getPageIndexForScreenId(long screenId) { 577 Launcher.addDumpLog(TAG, "10249126 - getPageIndexForScreenId(" + screenId + ")", true); 578 return indexOfChild(mWorkspaceScreens.get(screenId)); 579 } 580 581 public long getScreenIdForPageIndex(int index) { 582 if (0 <= index && index < mScreenOrder.size()) { 583 return mScreenOrder.get(index); 584 } 585 return -1; 586 } 587 588 public boolean hasNonCustomEmptyScreens() { 589 Launcher.addDumpLog(TAG, "10249126 - hasNonCustomEmptyScreens()", true); 590 Iterator<Long> iter = mWorkspaceScreens.keySet().iterator(); 591 while (iter.hasNext()) { 592 long id = iter.next(); 593 if (id >= 0) { 594 return true; 595 } 596 } 597 return false; 598 } 599 600 ArrayList<Long> getScreenOrder() { 601 return mScreenOrder; 602 } 603 604 public void stripEmptyScreens() { 605 if (isPageMoving()) { 606 mStripScreensOnPageStopMoving = true; 607 return; 608 } 609 610 Launcher.addDumpLog(TAG, "10249126 - stripEmptyScreens()", true); 611 612 int currentPage = getNextPage(); 613 ArrayList<Long> removeScreens = new ArrayList<Long>(); 614 for (Long id: mWorkspaceScreens.keySet()) { 615 CellLayout cl = mWorkspaceScreens.get(id); 616 if (id >= 0 && cl.getShortcutsAndWidgets().getChildCount() == 0) { 617 removeScreens.add(id); 618 } 619 } 620 621 int pageShift = 0; 622 for (Long id: removeScreens) { 623 Launcher.addDumpLog(TAG, "10249126 - \tremove(" + id + ")", true); 624 CellLayout cl = mWorkspaceScreens.get(id); 625 mWorkspaceScreens.remove(id); 626 mScreenOrder.remove(id); 627 if (indexOfChild(cl) < currentPage) { 628 pageShift++; 629 } 630 removeView(cl); 631 } 632 633 if (!removeScreens.isEmpty()) { 634 // Update the model if we have changed any screens 635 mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); 636 } 637 638 if (pageShift >= 0) { 639 setCurrentPage(currentPage - pageShift); 640 } 641 } 642 643 // See implementation for parameter definition. 644 void addInScreen(View child, long container, long screenId, 645 int x, int y, int spanX, int spanY) { 646 addInScreen(child, container, screenId, x, y, spanX, spanY, false, false); 647 } 648 649 // At bind time, we use the rank (screenId) to compute x and y for hotseat items. 650 // See implementation for parameter definition. 651 void addInScreenFromBind(View child, long container, long screenId, int x, int y, 652 int spanX, int spanY) { 653 addInScreen(child, container, screenId, x, y, spanX, spanY, false, true); 654 } 655 656 // See implementation for parameter definition. 657 void addInScreen(View child, long container, long screenId, int x, int y, int spanX, int spanY, 658 boolean insert) { 659 addInScreen(child, container, screenId, x, y, spanX, spanY, insert, false); 660 } 661 662 /** 663 * Adds the specified child in the specified screen. The position and dimension of 664 * the child are defined by x, y, spanX and spanY. 665 * 666 * @param child The child to add in one of the workspace's screens. 667 * @param screenId The screen in which to add the child. 668 * @param x The X position of the child in the screen's grid. 669 * @param y The Y position of the child in the screen's grid. 670 * @param spanX The number of cells spanned horizontally by the child. 671 * @param spanY The number of cells spanned vertically by the child. 672 * @param insert When true, the child is inserted at the beginning of the children list. 673 * @param computeXYFromRank When true, we use the rank (stored in screenId) to compute 674 * the x and y position in which to place hotseat items. Otherwise 675 * we use the x and y position to compute the rank. 676 */ 677 void addInScreen(View child, long container, long screenId, int x, int y, int spanX, int spanY, 678 boolean insert, boolean computeXYFromRank) { 679 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 680 if (getScreenWithId(screenId) == null) { 681 Log.e(TAG, "Skipping child, screenId " + screenId + " not found"); 682 // DEBUGGING - Print out the stack trace to see where we are adding from 683 new Throwable().printStackTrace(); 684 return; 685 } 686 } 687 if (screenId == EXTRA_EMPTY_SCREEN_ID) { 688 // This should never happen 689 throw new RuntimeException("Screen id should not be EXTRA_EMPTY_SCREEN_ID"); 690 } 691 692 final CellLayout layout; 693 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 694 layout = mLauncher.getHotseat().getLayout(); 695 child.setOnKeyListener(null); 696 697 // Hide folder title in the hotseat 698 if (child instanceof FolderIcon) { 699 ((FolderIcon) child).setTextVisible(false); 700 } 701 702 if (computeXYFromRank) { 703 x = mLauncher.getHotseat().getCellXFromOrder((int) screenId); 704 y = mLauncher.getHotseat().getCellYFromOrder((int) screenId); 705 } else { 706 screenId = mLauncher.getHotseat().getOrderInHotseat(x, y); 707 } 708 } else { 709 // Show folder title if not in the hotseat 710 if (child instanceof FolderIcon) { 711 ((FolderIcon) child).setTextVisible(true); 712 } 713 layout = getScreenWithId(screenId); 714 child.setOnKeyListener(new IconKeyEventListener()); 715 } 716 717 ViewGroup.LayoutParams genericLp = child.getLayoutParams(); 718 CellLayout.LayoutParams lp; 719 if (genericLp == null || !(genericLp instanceof CellLayout.LayoutParams)) { 720 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 721 } else { 722 lp = (CellLayout.LayoutParams) genericLp; 723 lp.cellX = x; 724 lp.cellY = y; 725 lp.cellHSpan = spanX; 726 lp.cellVSpan = spanY; 727 } 728 729 if (spanX < 0 && spanY < 0) { 730 lp.isLockedToGrid = false; 731 } 732 733 // Get the canonical child id to uniquely represent this view in this screen 734 int childId = LauncherModel.getCellLayoutChildId(container, screenId, x, y, spanX, spanY); 735 boolean markCellsAsOccupied = !(child instanceof Folder); 736 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 737 // TODO: This branch occurs when the workspace is adding views 738 // outside of the defined grid 739 // maybe we should be deleting these items from the LauncherModel? 740 Launcher.addDumpLog(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout", true); 741 } 742 743 if (!(child instanceof Folder)) { 744 child.setHapticFeedbackEnabled(false); 745 child.setOnLongClickListener(mLongClickListener); 746 } 747 if (child instanceof DropTarget) { 748 mDragController.addDropTarget((DropTarget) child); 749 } 750 } 751 752 /** 753 * Called directly from a CellLayout (not by the framework), after we've been added as a 754 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 755 * that it should intercept touch events, which is not something that is normally supported. 756 */ 757 @Override 758 public boolean onTouch(View v, MotionEvent event) { 759 return (isSmall() || !isFinishedSwitchingState()) 760 || (!isSmall() && indexOfChild(v) != mCurrentPage); 761 } 762 763 public boolean isSwitchingState() { 764 return mIsSwitchingState; 765 } 766 767 /** This differs from isSwitchingState in that we take into account how far the transition 768 * has completed. */ 769 public boolean isFinishedSwitchingState() { 770 return !mIsSwitchingState || (mTransitionProgress > 0.5f); 771 } 772 773 protected void onWindowVisibilityChanged (int visibility) { 774 mLauncher.onWindowVisibilityChanged(visibility); 775 if (mCustomContentShowing && mCustomContentCallbacks != null) { 776 if (visibility == View.VISIBLE) { 777 mCustomContentCallbacks.onShow(); 778 } else if (visibility == View.GONE) { 779 mCustomContentCallbacks.onHide(); 780 } 781 } 782 } 783 784 @Override 785 public boolean dispatchUnhandledMove(View focused, int direction) { 786 if (isSmall() || !isFinishedSwitchingState()) { 787 // when the home screens are shrunken, shouldn't allow side-scrolling 788 return false; 789 } 790 return super.dispatchUnhandledMove(focused, direction); 791 } 792 793 @Override 794 public boolean onInterceptTouchEvent(MotionEvent ev) { 795 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 796 case MotionEvent.ACTION_DOWN: 797 mXDown = ev.getX(); 798 mYDown = ev.getY(); 799 mTouchDownTime = System.currentTimeMillis(); 800 break; 801 case MotionEvent.ACTION_POINTER_UP: 802 case MotionEvent.ACTION_UP: 803 if (mTouchState == TOUCH_STATE_REST) { 804 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 805 if (!currentPage.lastDownOnOccupiedCell()) { 806 onWallpaperTap(ev); 807 } 808 } 809 } 810 return super.onInterceptTouchEvent(ev); 811 } 812 813 protected void reinflateWidgetsIfNecessary() { 814 final int clCount = getChildCount(); 815 for (int i = 0; i < clCount; i++) { 816 CellLayout cl = (CellLayout) getChildAt(i); 817 ShortcutAndWidgetContainer swc = cl.getShortcutsAndWidgets(); 818 final int itemCount = swc.getChildCount(); 819 for (int j = 0; j < itemCount; j++) { 820 View v = swc.getChildAt(j); 821 822 if (v.getTag() instanceof LauncherAppWidgetInfo) { 823 LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) v.getTag(); 824 LauncherAppWidgetHostView lahv = (LauncherAppWidgetHostView) info.hostView; 825 if (lahv != null && lahv.orientationChangedSincedInflation()) { 826 mLauncher.removeAppWidget(info); 827 // Remove the current widget which is inflated with the wrong orientation 828 cl.removeView(lahv); 829 mLauncher.bindAppWidget(info); 830 } 831 } 832 } 833 } 834 } 835 836 @Override 837 protected void determineScrollingStart(MotionEvent ev) { 838 if (!isFinishedSwitchingState()) return; 839 840 float deltaX = ev.getX() - mXDown; 841 float absDeltaX = Math.abs(deltaX); 842 float absDeltaY = Math.abs(ev.getY() - mYDown); 843 844 if (Float.compare(absDeltaX, 0f) == 0) return; 845 846 float slope = absDeltaY / absDeltaX; 847 float theta = (float) Math.atan(slope); 848 849 if (absDeltaX > mTouchSlop || absDeltaY > mTouchSlop) { 850 cancelCurrentPageLongPress(); 851 } 852 853 boolean passRightSwipesToCustomContent = 854 (mTouchDownTime - mCustomContentShowTime) > CUSTOM_CONTENT_GESTURE_DELAY; 855 856 if (deltaX > 0 && getScreenIdForPageIndex(getCurrentPage()) == CUSTOM_CONTENT_SCREEN_ID 857 && passRightSwipesToCustomContent) { 858 // Pass swipes to the right to the custom content page. 859 return; 860 } 861 862 if (theta > MAX_SWIPE_ANGLE) { 863 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 864 return; 865 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 866 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 867 // increase the touch slop to make it harder to begin scrolling the workspace. This 868 // results in vertically scrolling widgets to more easily. The higher the angle, the 869 // more we increase touch slop. 870 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 871 float extraRatio = (float) 872 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 873 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 874 } else { 875 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 876 super.determineScrollingStart(ev); 877 } 878 } 879 880 protected void onPageBeginMoving() { 881 super.onPageBeginMoving(); 882 883 if (isHardwareAccelerated()) { 884 updateChildrenLayersEnabled(false); 885 } else { 886 if (mNextPage != INVALID_PAGE) { 887 // we're snapping to a particular screen 888 enableChildrenCache(mCurrentPage, mNextPage); 889 } else { 890 // this is when user is actively dragging a particular screen, they might 891 // swipe it either left or right (but we won't advance by more than one screen) 892 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 893 } 894 } 895 896 // Only show page outlines as we pan if we are on large screen 897 if (LauncherAppState.getInstance().isScreenLarge()) { 898 showOutlines(); 899 } 900 901 // If we are not fading in adjacent screens, we still need to restore the alpha in case the 902 // user scrolls while we are transitioning (should not affect dispatchDraw optimizations) 903 if (!mWorkspaceFadeInAdjacentScreens) { 904 for (int i = 0; i < getChildCount(); ++i) { 905 ((CellLayout) getPageAt(i)).setShortcutAndWidgetAlpha(1f); 906 } 907 } 908 } 909 910 protected void onPageEndMoving() { 911 super.onPageEndMoving(); 912 913 if (isHardwareAccelerated()) { 914 updateChildrenLayersEnabled(false); 915 } else { 916 clearChildrenCache(); 917 } 918 919 920 if (mDragController.isDragging()) { 921 if (isSmall()) { 922 // If we are in springloaded mode, then force an event to check if the current touch 923 // is under a new page (to scroll to) 924 mDragController.forceTouchMove(); 925 } 926 } else { 927 // If we are not mid-dragging, hide the page outlines if we are on a large screen 928 if (LauncherAppState.getInstance().isScreenLarge()) { 929 hideOutlines(); 930 } 931 } 932 933 if (mDelayedResizeRunnable != null) { 934 mDelayedResizeRunnable.run(); 935 mDelayedResizeRunnable = null; 936 } 937 938 if (mDelayedSnapToPageRunnable != null) { 939 mDelayedSnapToPageRunnable.run(); 940 mDelayedSnapToPageRunnable = null; 941 } 942 if (mStripScreensOnPageStopMoving) { 943 stripEmptyScreens(); 944 mStripScreensOnPageStopMoving = false; 945 } 946 947 if (hasCustomContent() && getNextPage() == 0 && !mCustomContentShowing) { 948 mCustomContentShowing = true; 949 if (mCustomContentCallbacks != null) { 950 mCustomContentCallbacks.onShow(); 951 mCustomContentShowTime = System.currentTimeMillis(); 952 } 953 } else if (hasCustomContent() && getNextPage() != 0 && mCustomContentShowing) { 954 mCustomContentShowing = false; 955 if (mCustomContentCallbacks != null) { 956 mCustomContentCallbacks.onHide(); 957 mLauncher.resetQSBScroll(); 958 } 959 } 960 } 961 962 @Override 963 protected void notifyPageSwitchListener() { 964 super.notifyPageSwitchListener(); 965 Launcher.setScreen(mCurrentPage); 966 }; 967 968 protected void setWallpaperDimension() { 969 WallpaperPickerActivity.suggestWallpaperDimension(mLauncher.getResources(), 970 mLauncher.getSharedPrefs(), mLauncher.getWindowManager(), mWallpaperManager); 971 } 972 973 974 975 976 protected void snapToPage(int whichPage, Runnable r) { 977 if (mDelayedSnapToPageRunnable != null) { 978 mDelayedSnapToPageRunnable.run(); 979 } 980 mDelayedSnapToPageRunnable = r; 981 snapToPage(whichPage, SLOW_PAGE_SNAP_ANIMATION_DURATION); 982 } 983 984 protected void snapToScreenId(long screenId, Runnable r) { 985 snapToPage(getPageIndexForScreenId(screenId), r); 986 } 987 988 class WallpaperOffsetInterpolator implements Choreographer.FrameCallback { 989 float mFinalOffset = 0.0f; 990 float mCurrentOffset = 0.0f; 991 //long mLastWallpaperOffsetUpdateTime; 992 boolean mWaitingForUpdate; 993 Choreographer mChoreographer; 994 Interpolator mInterpolator; 995 boolean mAnimating; 996 long mAnimationStartTime; 997 float mAnimationStartOffset; 998 final int ANIMATION_DURATION = 250; 999 int mNumScreens; 1000 1001 public WallpaperOffsetInterpolator() { 1002 mChoreographer = Choreographer.getInstance(); 1003 mInterpolator = new DecelerateInterpolator(1.5f); 1004 } 1005 1006 @Override 1007 public void doFrame(long frameTimeNanos) { 1008 updateOffset(false); 1009 } 1010 1011 1012 private void updateOffset(boolean force) { 1013 if (mWaitingForUpdate || force) { 1014 mWaitingForUpdate = false; 1015 if (computeScrollOffset()) { 1016 mWallpaperManager.setWallpaperOffsets(mWindowToken, 1017 mWallpaperOffset.getCurrX(), 0.5f); 1018 setWallpaperOffsetSteps(); 1019 } 1020 } 1021 } 1022 1023 public boolean computeScrollOffset() { 1024 final float oldOffset = mCurrentOffset; 1025 if (mAnimating) { 1026 long durationSinceAnimation = System.currentTimeMillis() - mAnimationStartTime; 1027 float t0 = durationSinceAnimation / (float) ANIMATION_DURATION; 1028 float t1 = mInterpolator.getInterpolation(t0); 1029 mCurrentOffset = mAnimationStartOffset + 1030 (mFinalOffset - mAnimationStartOffset) * t1; 1031 mAnimating = durationSinceAnimation < ANIMATION_DURATION; 1032 } else { 1033 mCurrentOffset = mFinalOffset; 1034 } 1035 1036 if (Math.abs(mCurrentOffset - mFinalOffset) > 0.0000001f) { 1037 scheduleUpdate(); 1038 } 1039 if (Math.abs(oldOffset - mCurrentOffset) > 0.0000001f) { 1040 return true; 1041 } 1042 return false; 1043 } 1044 1045 private float wallpaperOffsetForCurrentScroll() { 1046 if (getChildCount() <= 1) { 1047 return 0; 1048 } 1049 final int lastIndex = isLayoutRtl() ? 0 : getChildCount() - 1; 1050 final int firstIndex = isLayoutRtl() ? getChildCount() - 2 : 1; 1051 int firstPageScrollX = getScrollForPage(firstIndex); 1052 int scrollRange = getScrollForPage(lastIndex) - firstPageScrollX; 1053 if (scrollRange == 0) { 1054 return 0; 1055 } else { 1056 // do different behavior if it's a live wallpaper? 1057 float offset = (getScrollX() - firstPageScrollX) / (float) scrollRange; 1058 return offset; 1059 } 1060 } 1061 1062 public void syncWithScroll() { 1063 float offset = wallpaperOffsetForCurrentScroll(); 1064 mWallpaperOffset.setFinalX(offset); 1065 updateOffset(true); 1066 } 1067 1068 public float getCurrX() { 1069 return mCurrentOffset; 1070 } 1071 1072 public float getFinalX() { 1073 return mFinalOffset; 1074 } 1075 1076 private void animateToFinal() { 1077 mAnimating = true; 1078 mAnimationStartOffset = mCurrentOffset; 1079 mAnimationStartTime = System.currentTimeMillis(); 1080 } 1081 1082 private void setWallpaperOffsetSteps() { 1083 // Set wallpaper offset steps (1 / (number of screens - 1)) 1084 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f); 1085 } 1086 1087 public void setFinalX(float x) { 1088 scheduleUpdate(); 1089 mFinalOffset = Math.max(0f, Math.min(x, 1.0f)); 1090 if (getChildCount() != mNumScreens) { 1091 if (mNumScreens > 0) { 1092 // Don't animate if we're going from 0 screens 1093 animateToFinal(); 1094 } 1095 mNumScreens = getChildCount(); 1096 } 1097 } 1098 1099 private void scheduleUpdate() { 1100 if (!mWaitingForUpdate) { 1101 mChoreographer.postFrameCallback(this); 1102 mWaitingForUpdate = true; 1103 } 1104 } 1105 1106 public void jumpToFinal() { 1107 mCurrentOffset = mFinalOffset; 1108 } 1109 } 1110 1111 @Override 1112 public void computeScroll() { 1113 super.computeScroll(); 1114 mWallpaperOffset.syncWithScroll(); 1115 } 1116 1117 void showOutlines() { 1118 if (!isSmall() && !mIsSwitchingState) { 1119 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1120 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1121 mChildrenOutlineFadeInAnimation = LauncherAnimUtils.ofFloat(this, "childrenOutlineAlpha", 1.0f); 1122 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 1123 mChildrenOutlineFadeInAnimation.start(); 1124 } 1125 } 1126 1127 void hideOutlines() { 1128 if (!isSmall() && !mIsSwitchingState) { 1129 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1130 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1131 mChildrenOutlineFadeOutAnimation = LauncherAnimUtils.ofFloat(this, "childrenOutlineAlpha", 0.0f); 1132 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 1133 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 1134 mChildrenOutlineFadeOutAnimation.start(); 1135 } 1136 } 1137 1138 public void showOutlinesTemporarily() { 1139 if (!mIsPageMoving && !isTouchActive()) { 1140 snapToPage(mCurrentPage); 1141 } 1142 } 1143 1144 public void setChildrenOutlineAlpha(float alpha) { 1145 mChildrenOutlineAlpha = alpha; 1146 for (int i = 0; i < getChildCount(); i++) { 1147 CellLayout cl = (CellLayout) getChildAt(i); 1148 cl.setBackgroundAlpha(alpha); 1149 } 1150 } 1151 1152 public float getChildrenOutlineAlpha() { 1153 return mChildrenOutlineAlpha; 1154 } 1155 1156 void disableBackground() { 1157 mDrawBackground = false; 1158 } 1159 void enableBackground() { 1160 mDrawBackground = true; 1161 } 1162 1163 private void animateBackgroundGradient(float finalAlpha, boolean animated) { 1164 if (mBackground == null) return; 1165 if (mBackgroundFadeInAnimation != null) { 1166 mBackgroundFadeInAnimation.cancel(); 1167 mBackgroundFadeInAnimation = null; 1168 } 1169 if (mBackgroundFadeOutAnimation != null) { 1170 mBackgroundFadeOutAnimation.cancel(); 1171 mBackgroundFadeOutAnimation = null; 1172 } 1173 float startAlpha = getBackgroundAlpha(); 1174 if (finalAlpha != startAlpha) { 1175 if (animated) { 1176 mBackgroundFadeOutAnimation = 1177 LauncherAnimUtils.ofFloat(this, startAlpha, finalAlpha); 1178 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1179 public void onAnimationUpdate(ValueAnimator animation) { 1180 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1181 } 1182 }); 1183 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1184 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1185 mBackgroundFadeOutAnimation.start(); 1186 } else { 1187 setBackgroundAlpha(finalAlpha); 1188 } 1189 } 1190 } 1191 1192 public void setBackgroundAlpha(float alpha) { 1193 if (alpha != mBackgroundAlpha) { 1194 mBackgroundAlpha = alpha; 1195 invalidate(); 1196 } 1197 } 1198 1199 public float getBackgroundAlpha() { 1200 return mBackgroundAlpha; 1201 } 1202 1203 float backgroundAlphaInterpolator(float r) { 1204 float pivotA = 0.1f; 1205 float pivotB = 0.4f; 1206 if (r < pivotA) { 1207 return 0; 1208 } else if (r > pivotB) { 1209 return 1.0f; 1210 } else { 1211 return (r - pivotA)/(pivotB - pivotA); 1212 } 1213 } 1214 1215 private void updatePageAlphaValues(int screenCenter) { 1216 boolean isInOverscroll = mOverScrollX < 0 || mOverScrollX > mMaxScrollX; 1217 if (mWorkspaceFadeInAdjacentScreens && 1218 mState == State.NORMAL && 1219 !mIsSwitchingState && 1220 !isInOverscroll) { 1221 for (int i = 0; i < getChildCount(); i++) { 1222 CellLayout child = (CellLayout) getChildAt(i); 1223 if (child != null) { 1224 float scrollProgress = getScrollProgress(screenCenter, child, i); 1225 float alpha = 1 - Math.abs(scrollProgress); 1226 child.getShortcutsAndWidgets().setAlpha(alpha); 1227 if (!mIsDragOccuring) { 1228 child.setBackgroundAlphaMultiplier( 1229 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1230 } else { 1231 child.setBackgroundAlphaMultiplier(1f); 1232 } 1233 } 1234 } 1235 } 1236 } 1237 1238 private void setChildrenBackgroundAlphaMultipliers(float a) { 1239 for (int i = 0; i < getChildCount(); i++) { 1240 CellLayout child = (CellLayout) getChildAt(i); 1241 child.setBackgroundAlphaMultiplier(a); 1242 } 1243 } 1244 1245 public boolean hasCustomContent() { 1246 return (mScreenOrder.size() > 0 && mScreenOrder.get(0) == CUSTOM_CONTENT_SCREEN_ID); 1247 } 1248 1249 public boolean isOnOrMovingToCustomContent() { 1250 return hasCustomContent() && getNextPage() == 0; 1251 } 1252 1253 private void updateStateForCustomContent(int screenCenter) { 1254 if (hasCustomContent() && !isSmall() && !isSwitchingState()) { 1255 int index = mScreenOrder.indexOf(CUSTOM_CONTENT_SCREEN_ID); 1256 int scrollDelta = getScrollForPage(index + 1) - getScrollX(); 1257 float progress = (1.0f * scrollDelta) / 1258 (getScrollForPage(index + 1) - getScrollForPage(index)); 1259 progress = Math.max(0, progress); 1260 1261 setBackgroundAlpha(progress * 0.8f); 1262 float height = getViewportHeight(); 1263 if (getPageIndicator() != null) { 1264 height -= getPageIndicator().getTop(); 1265 } else if (mLauncher.getHotseat() != null) { 1266 height -= mLauncher.getHotseat().getTop(); 1267 } 1268 float transY = progress * height; 1269 1270 if (mLauncher.getHotseat() != null) { 1271 mLauncher.getHotseat().setTranslationY(transY); 1272 mLauncher.getHotseat().setAlpha(1 - progress); 1273 } 1274 if (getPageIndicator() != null) { 1275 final float alpha = 1 - progress; 1276 final View pi = getPageIndicator(); 1277 getPageIndicator().setAlpha(alpha); 1278 if (alpha < ALPHA_CUTOFF_THRESHOLD && pi.getVisibility() != INVISIBLE) { 1279 pi.setVisibility(INVISIBLE); 1280 } else if (alpha > ALPHA_CUTOFF_THRESHOLD && pi.getVisibility() != VISIBLE) { 1281 pi.setVisibility(VISIBLE); 1282 } 1283 } 1284 } 1285 } 1286 1287 @Override 1288 protected void screenScrolled(int screenCenter) { 1289 final boolean isRtl = isLayoutRtl(); 1290 super.screenScrolled(screenCenter); 1291 1292 updatePageAlphaValues(screenCenter); 1293 updateStateForCustomContent(screenCenter); 1294 enableHwLayersOnVisiblePages(); 1295 1296 if ((mOverScrollX < 0 && !hasCustomContent()) || mOverScrollX > mMaxScrollX) { 1297 int index = 0; 1298 float pivotX = 0f; 1299 final float leftBiasedPivot = 0.25f; 1300 final float rightBiasedPivot = 0.75f; 1301 final int lowerIndex = 0; 1302 final int upperIndex = getChildCount() - 1; 1303 if (isRtl) { 1304 index = mOverScrollX < 0 ? upperIndex : lowerIndex; 1305 pivotX = (index == 0 ? leftBiasedPivot : rightBiasedPivot); 1306 } else { 1307 index = mOverScrollX < 0 ? lowerIndex : upperIndex; 1308 pivotX = (index == 0 ? rightBiasedPivot : leftBiasedPivot); 1309 } 1310 1311 CellLayout cl = (CellLayout) getChildAt(index); 1312 float scrollProgress = getScrollProgress(screenCenter, cl, index); 1313 final boolean isLeftPage = (isRtl ? index > 0 : index == 0); 1314 cl.setOverScrollAmount(Math.abs(scrollProgress), isLeftPage); 1315 float rotation = -WORKSPACE_OVERSCROLL_ROTATION * scrollProgress; 1316 cl.setRotationY(rotation); 1317 if (!mOverscrollTransformsSet) { 1318 mOverscrollTransformsSet = true; 1319 cl.setCameraDistance(mDensity * mCameraDistance); 1320 cl.setPivotX(cl.getMeasuredWidth() * pivotX); 1321 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1322 cl.setOverscrollTransformsDirty(true); 1323 } 1324 } else { 1325 if (mOverscrollTransformsSet) { 1326 mOverscrollTransformsSet = false; 1327 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1328 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1329 } 1330 } 1331 } 1332 1333 @Override 1334 protected void overScroll(float amount) { 1335 acceleratedOverScroll(amount); 1336 } 1337 1338 protected void onAttachedToWindow() { 1339 super.onAttachedToWindow(); 1340 mWindowToken = getWindowToken(); 1341 computeScroll(); 1342 mDragController.setWindowToken(mWindowToken); 1343 } 1344 1345 protected void onDetachedFromWindow() { 1346 super.onDetachedFromWindow(); 1347 mWindowToken = null; 1348 } 1349 1350 @Override 1351 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1352 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1353 mWallpaperOffset.syncWithScroll(); 1354 mWallpaperOffset.jumpToFinal(); 1355 } 1356 super.onLayout(changed, left, top, right, bottom); 1357 } 1358 1359 @Override 1360 protected void onDraw(Canvas canvas) { 1361 // Draw the background gradient if necessary 1362 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1363 int alpha = (int) (mBackgroundAlpha * 255); 1364 mBackground.setAlpha(alpha); 1365 mBackground.setBounds(getScrollX(), 0, getScrollX() + getMeasuredWidth(), 1366 getMeasuredHeight()); 1367 mBackground.draw(canvas); 1368 } 1369 1370 super.onDraw(canvas); 1371 1372 // Call back to LauncherModel to finish binding after the first draw 1373 post(mBindPages); 1374 } 1375 1376 boolean isDrawingBackgroundGradient() { 1377 return (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground); 1378 } 1379 1380 @Override 1381 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1382 if (!mLauncher.isAllAppsVisible()) { 1383 final Folder openFolder = getOpenFolder(); 1384 if (openFolder != null) { 1385 return openFolder.requestFocus(direction, previouslyFocusedRect); 1386 } else { 1387 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1388 } 1389 } 1390 return false; 1391 } 1392 1393 @Override 1394 public int getDescendantFocusability() { 1395 if (isSmall()) { 1396 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1397 } 1398 return super.getDescendantFocusability(); 1399 } 1400 1401 @Override 1402 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1403 if (!mLauncher.isAllAppsVisible()) { 1404 final Folder openFolder = getOpenFolder(); 1405 if (openFolder != null) { 1406 openFolder.addFocusables(views, direction); 1407 } else { 1408 super.addFocusables(views, direction, focusableMode); 1409 } 1410 } 1411 } 1412 1413 public boolean isSmall() { 1414 return mState == State.SMALL || mState == State.SPRING_LOADED || mState == State.OVERVIEW; 1415 } 1416 1417 void enableChildrenCache(int fromPage, int toPage) { 1418 if (fromPage > toPage) { 1419 final int temp = fromPage; 1420 fromPage = toPage; 1421 toPage = temp; 1422 } 1423 1424 final int screenCount = getChildCount(); 1425 1426 fromPage = Math.max(fromPage, 0); 1427 toPage = Math.min(toPage, screenCount - 1); 1428 1429 for (int i = fromPage; i <= toPage; i++) { 1430 final CellLayout layout = (CellLayout) getChildAt(i); 1431 layout.setChildrenDrawnWithCacheEnabled(true); 1432 layout.setChildrenDrawingCacheEnabled(true); 1433 } 1434 } 1435 1436 void clearChildrenCache() { 1437 final int screenCount = getChildCount(); 1438 for (int i = 0; i < screenCount; i++) { 1439 final CellLayout layout = (CellLayout) getChildAt(i); 1440 layout.setChildrenDrawnWithCacheEnabled(false); 1441 // In software mode, we don't want the items to continue to be drawn into bitmaps 1442 if (!isHardwareAccelerated()) { 1443 layout.setChildrenDrawingCacheEnabled(false); 1444 } 1445 } 1446 } 1447 1448 private void updateChildrenLayersEnabled(boolean force) { 1449 boolean small = mState == State.SMALL || mState == State.OVERVIEW || mIsSwitchingState; 1450 boolean enableChildrenLayers = force || small || mAnimatingViewIntoPlace || isPageMoving(); 1451 1452 if (enableChildrenLayers != mChildrenLayersEnabled) { 1453 mChildrenLayersEnabled = enableChildrenLayers; 1454 if (mChildrenLayersEnabled) { 1455 enableHwLayersOnVisiblePages(); 1456 } else { 1457 for (int i = 0; i < getPageCount(); i++) { 1458 final CellLayout cl = (CellLayout) getChildAt(i); 1459 cl.disableHardwareLayers(); 1460 } 1461 } 1462 } 1463 } 1464 1465 private void enableHwLayersOnVisiblePages() { 1466 if (mChildrenLayersEnabled) { 1467 final int screenCount = getChildCount(); 1468 getVisiblePages(mTempVisiblePagesRange); 1469 int leftScreen = mTempVisiblePagesRange[0]; 1470 int rightScreen = mTempVisiblePagesRange[1]; 1471 if (leftScreen == rightScreen) { 1472 // make sure we're caching at least two pages always 1473 if (rightScreen < screenCount - 1) { 1474 rightScreen++; 1475 } else if (leftScreen > 0) { 1476 leftScreen--; 1477 } 1478 } 1479 for (int i = 0; i < screenCount; i++) { 1480 final CellLayout layout = (CellLayout) getPageAt(i); 1481 if (!(leftScreen <= i && i <= rightScreen && shouldDrawChild(layout))) { 1482 layout.disableHardwareLayers(); 1483 } 1484 } 1485 for (int i = 0; i < screenCount; i++) { 1486 final CellLayout layout = (CellLayout) getPageAt(i); 1487 if (leftScreen <= i && i <= rightScreen && shouldDrawChild(layout)) { 1488 layout.enableHardwareLayers(); 1489 } 1490 } 1491 } 1492 } 1493 1494 public void buildPageHardwareLayers() { 1495 // force layers to be enabled just for the call to buildLayer 1496 updateChildrenLayersEnabled(true); 1497 if (getWindowToken() != null) { 1498 final int childCount = getChildCount(); 1499 for (int i = 0; i < childCount; i++) { 1500 CellLayout cl = (CellLayout) getChildAt(i); 1501 cl.buildHardwareLayer(); 1502 } 1503 } 1504 updateChildrenLayersEnabled(false); 1505 } 1506 1507 protected void onWallpaperTap(MotionEvent ev) { 1508 final int[] position = mTempCell; 1509 getLocationOnScreen(position); 1510 1511 int pointerIndex = ev.getActionIndex(); 1512 position[0] += (int) ev.getX(pointerIndex); 1513 position[1] += (int) ev.getY(pointerIndex); 1514 1515 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1516 ev.getAction() == MotionEvent.ACTION_UP 1517 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1518 position[0], position[1], 0, null); 1519 } 1520 1521 /* 1522 * This interpolator emulates the rate at which the perceived scale of an object changes 1523 * as its distance from a camera increases. When this interpolator is applied to a scale 1524 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1525 * from the camera. 1526 */ 1527 static class ZInterpolator implements TimeInterpolator { 1528 private float focalLength; 1529 1530 public ZInterpolator(float foc) { 1531 focalLength = foc; 1532 } 1533 1534 public float getInterpolation(float input) { 1535 return (1.0f - focalLength / (focalLength + input)) / 1536 (1.0f - focalLength / (focalLength + 1.0f)); 1537 } 1538 } 1539 1540 /* 1541 * The exact reverse of ZInterpolator. 1542 */ 1543 static class InverseZInterpolator implements TimeInterpolator { 1544 private ZInterpolator zInterpolator; 1545 public InverseZInterpolator(float foc) { 1546 zInterpolator = new ZInterpolator(foc); 1547 } 1548 public float getInterpolation(float input) { 1549 return 1 - zInterpolator.getInterpolation(1 - input); 1550 } 1551 } 1552 1553 /* 1554 * ZInterpolator compounded with an ease-out. 1555 */ 1556 static class ZoomOutInterpolator implements TimeInterpolator { 1557 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(0.75f); 1558 private final ZInterpolator zInterpolator = new ZInterpolator(0.13f); 1559 1560 public float getInterpolation(float input) { 1561 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1562 } 1563 } 1564 1565 /* 1566 * InvereZInterpolator compounded with an ease-out. 1567 */ 1568 static class ZoomInInterpolator implements TimeInterpolator { 1569 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1570 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1571 1572 public float getInterpolation(float input) { 1573 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1574 } 1575 } 1576 1577 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1578 1579 /* 1580 * 1581 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1582 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1583 * 1584 * These methods mark the appropriate pages as accepting drops (which alters their visual 1585 * appearance). 1586 * 1587 */ 1588 public void onDragStartedWithItem(View v) { 1589 final Canvas canvas = new Canvas(); 1590 1591 // The outline is used to visualize where the item will land if dropped 1592 mDragOutline = createDragOutline(v, canvas, DRAG_BITMAP_PADDING); 1593 } 1594 1595 public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, boolean clipAlpha) { 1596 final Canvas canvas = new Canvas(); 1597 1598 int[] size = estimateItemSize(info.spanX, info.spanY, info, false); 1599 1600 // The outline is used to visualize where the item will land if dropped 1601 mDragOutline = createDragOutline(b, canvas, DRAG_BITMAP_PADDING, size[0], 1602 size[1], clipAlpha); 1603 } 1604 1605 public void exitWidgetResizeMode() { 1606 DragLayer dragLayer = mLauncher.getDragLayer(); 1607 dragLayer.clearAllResizeFrames(); 1608 } 1609 1610 private void initAnimationArrays() { 1611 final int childCount = getChildCount(); 1612 if (mLastChildCount == childCount) return; 1613 1614 mOldBackgroundAlphas = new float[childCount]; 1615 mOldAlphas = new float[childCount]; 1616 mNewBackgroundAlphas = new float[childCount]; 1617 mNewAlphas = new float[childCount]; 1618 } 1619 1620 Animator getChangeStateAnimation(final State state, boolean animated) { 1621 return getChangeStateAnimation(state, animated, 0, -1); 1622 } 1623 1624 @Override 1625 protected void getOverviewModePages(int[] range) { 1626 int count = mScreenOrder.size(); 1627 1628 int start = -1; 1629 int end = -1; 1630 // 1631 for (int i = 0; i < count; i++) { 1632 if (start < 0 && mScreenOrder.get(i) >= 0) { 1633 start = i; 1634 } 1635 if (start >=0 && mScreenOrder.get(i) >= 0) { 1636 end = i; 1637 } 1638 } 1639 range[0] = start; 1640 range[1] = end; 1641 } 1642 1643 protected void onStartReordering() { 1644 super.onStartReordering(); 1645 int count = getChildCount(); 1646 for (int i = 0; i < count; i++) { 1647 ((CellLayout) getChildAt(i)).setUseActiveGlowBackground(true); 1648 } 1649 showOutlines(); 1650 1651 // Reordering handles its own animations, disable the automatic ones. 1652 setLayoutTransition(null); 1653 } 1654 1655 protected void onEndReordering() { 1656 super.onEndReordering(); 1657 int count = getChildCount(); 1658 for (int i = 0; i < count; i++) { 1659 ((CellLayout) getChildAt(i)).setUseActiveGlowBackground(false); 1660 } 1661 hideOutlines(); 1662 1663 mScreenOrder.clear(); 1664 for (int i = 0; i < count; i++) { 1665 CellLayout cl = ((CellLayout) getChildAt(i)); 1666 mScreenOrder.add(getIdForScreen(cl)); 1667 } 1668 1669 Launcher.addDumpLog(TAG, "10249126 - onEndReordering()", true); 1670 mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); 1671 1672 // Re-enable auto layout transitions for page deletion. 1673 setLayoutTransition(mLayoutTransition); 1674 } 1675 1676 public boolean isInOverviewMode() { 1677 return mState == State.OVERVIEW; 1678 } 1679 1680 public void enterOverviewMode() { 1681 enableOverviewMode(true, -1); 1682 } 1683 1684 public void exitOverviewMode() { 1685 exitOverviewMode(-1); 1686 } 1687 1688 public void exitOverviewMode(int snapPage) { 1689 enableOverviewMode(false, snapPage); 1690 } 1691 1692 private void enableOverviewMode(boolean enable, int snapPage) { 1693 State finalState = Workspace.State.OVERVIEW; 1694 if (!enable) { 1695 finalState = Workspace.State.NORMAL; 1696 } 1697 1698 Animator workspaceAnim = getChangeStateAnimation(finalState, true, 0, snapPage); 1699 workspaceAnim.addListener(new AnimatorListenerAdapter() { 1700 @Override 1701 public void onAnimationEnd(Animator arg0) { 1702 mIsSwitchingState = false; 1703 } 1704 @Override 1705 public void onAnimationStart(Animator arg0) { 1706 mIsSwitchingState = true; 1707 } 1708 }); 1709 workspaceAnim.start(); 1710 } 1711 1712 Animator getChangeStateAnimation(final State state, boolean animated, int delay, int snapPage) { 1713 if (mState == state) { 1714 return null; 1715 } 1716 1717 // Initialize animation arrays for the first time if necessary 1718 initAnimationArrays(); 1719 1720 AnimatorSet anim = animated ? LauncherAnimUtils.createAnimatorSet() : null; 1721 1722 final State oldState = mState; 1723 final boolean oldStateIsNormal = (oldState == State.NORMAL); 1724 final boolean oldStateIsSpringLoaded = (oldState == State.SPRING_LOADED); 1725 final boolean oldStateIsSmall = (oldState == State.SMALL); 1726 final boolean oldStateIsOverview = (oldState == State.OVERVIEW); 1727 mState = state; 1728 final boolean stateIsNormal = (state == State.NORMAL); 1729 final boolean stateIsSpringLoaded = (state == State.SPRING_LOADED); 1730 final boolean stateIsSmall = (state == State.SMALL); 1731 final boolean stateIsOverview = (state == State.OVERVIEW); 1732 float finalBackgroundAlpha = stateIsSpringLoaded ? 1.0f : 0f; 1733 float finalHotseatAndPageIndicatorAlpha = (stateIsOverview || stateIsSmall) ? 0f : 1f; 1734 float finalOverviewPanelAlpha = stateIsOverview ? 1f : 0f; 1735 1736 boolean zoomIn = true; 1737 mNewScale = 1.0f; 1738 1739 if (oldStateIsOverview) { 1740 disableFreeScroll(snapPage); 1741 } else if (stateIsOverview) { 1742 enableFreeScroll(); 1743 } 1744 1745 if (state != State.NORMAL) { 1746 if (stateIsSpringLoaded) { 1747 mNewScale = mSpringLoadedShrinkFactor; 1748 } else if (stateIsOverview) { 1749 mNewScale = mOverviewModeShrinkFactor; 1750 } else if (stateIsSmall){ 1751 mNewScale = mOverviewModeShrinkFactor - 0.1f; 1752 } 1753 if (oldStateIsNormal && stateIsSmall) { 1754 zoomIn = false; 1755 updateChildrenLayersEnabled(false); 1756 } else { 1757 finalBackgroundAlpha = 1.0f; 1758 } 1759 } 1760 final int duration = zoomIn ? 1761 getResources().getInteger(R.integer.config_workspaceUnshrinkTime) : 1762 getResources().getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1763 for (int i = 0; i < getChildCount(); i++) { 1764 final CellLayout cl = (CellLayout) getChildAt(i); 1765 float finalAlpha = (!mWorkspaceFadeInAdjacentScreens || stateIsSpringLoaded || 1766 (i == mCurrentPage)) ? 1f : 0f; 1767 float currentAlpha = cl.getShortcutsAndWidgets().getAlpha(); 1768 float initialAlpha = currentAlpha; 1769 1770 // Determine the pages alpha during the state transition 1771 if ((oldStateIsSmall && stateIsNormal) || 1772 (oldStateIsNormal && stateIsSmall)) { 1773 // To/from workspace - only show the current page unless the transition is not 1774 // animated and the animation end callback below doesn't run; 1775 // or, if we're in spring-loaded mode 1776 if (i == mCurrentPage || !animated || oldStateIsSpringLoaded) { 1777 finalAlpha = 1f; 1778 } else { 1779 initialAlpha = 0f; 1780 finalAlpha = 0f; 1781 } 1782 } 1783 1784 mOldAlphas[i] = initialAlpha; 1785 mNewAlphas[i] = finalAlpha; 1786 if (animated) { 1787 mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1788 mNewBackgroundAlphas[i] = finalBackgroundAlpha; 1789 } else { 1790 setScaleX(mNewScale); 1791 setScaleY(mNewScale); 1792 cl.setBackgroundAlpha(finalBackgroundAlpha); 1793 cl.setShortcutAndWidgetAlpha(finalAlpha); 1794 } 1795 } 1796 1797 if (animated) { 1798 LauncherViewPropertyAnimator scale = new LauncherViewPropertyAnimator(this); 1799 scale.scaleX(mNewScale) 1800 .scaleY(mNewScale) 1801 .setInterpolator(mZoomInInterpolator); 1802 anim.play(scale); 1803 for (int index = 0; index < getChildCount(); index++) { 1804 final int i = index; 1805 final CellLayout cl = (CellLayout) getChildAt(i); 1806 float currentAlpha = cl.getShortcutsAndWidgets().getAlpha(); 1807 if (mOldAlphas[i] == 0 && mNewAlphas[i] == 0) { 1808 cl.setBackgroundAlpha(mNewBackgroundAlphas[i]); 1809 cl.setShortcutAndWidgetAlpha(mNewAlphas[i]); 1810 } else { 1811 1812 if (mOldAlphas[i] != mNewAlphas[i] || currentAlpha != mNewAlphas[i]) { 1813 LauncherViewPropertyAnimator alphaAnim = 1814 new LauncherViewPropertyAnimator(cl.getShortcutsAndWidgets()); 1815 alphaAnim.alpha(mNewAlphas[i]) 1816 .setDuration(duration) 1817 .setInterpolator(mZoomInInterpolator); 1818 anim.play(alphaAnim); 1819 } 1820 if (mOldBackgroundAlphas[i] != 0 || 1821 mNewBackgroundAlphas[i] != 0) { 1822 ValueAnimator bgAnim = 1823 LauncherAnimUtils.ofFloat(cl, 0f, 1f).setDuration(duration); 1824 bgAnim.setInterpolator(mZoomInInterpolator); 1825 bgAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1826 public void onAnimationUpdate(float a, float b) { 1827 cl.setBackgroundAlpha( 1828 a * mOldBackgroundAlphas[i] + 1829 b * mNewBackgroundAlphas[i]); 1830 } 1831 }); 1832 anim.play(bgAnim); 1833 } 1834 } 1835 } 1836 ObjectAnimator pageIndicatorAlpha = null; 1837 if (getPageIndicator() != null) { 1838 pageIndicatorAlpha = ObjectAnimator.ofFloat(getPageIndicator(), "alpha", 1839 finalHotseatAndPageIndicatorAlpha); 1840 } 1841 ObjectAnimator hotseatAlpha = ObjectAnimator.ofFloat(mLauncher.getHotseat(), "alpha", 1842 finalHotseatAndPageIndicatorAlpha); 1843 ObjectAnimator overviewPanelAlpha = ObjectAnimator.ofFloat(mLauncher.getOverviewPanel(), 1844 "alpha", finalOverviewPanelAlpha); 1845 overviewPanelAlpha.addUpdateListener(new AlphaUpdateListener( 1846 mLauncher.getOverviewPanel())); 1847 hotseatAlpha.addUpdateListener(new AlphaUpdateListener(mLauncher.getHotseat())); 1848 if (getPageIndicator() != null) { 1849 pageIndicatorAlpha.addUpdateListener(new AlphaUpdateListener(getPageIndicator())); 1850 } 1851 anim.play(overviewPanelAlpha); 1852 anim.play(hotseatAlpha); 1853 anim.play(pageIndicatorAlpha); 1854 anim.setStartDelay(delay); 1855 } else { 1856 mLauncher.getOverviewPanel().setAlpha(finalOverviewPanelAlpha); 1857 mLauncher.getHotseat().setAlpha(finalHotseatAndPageIndicatorAlpha); 1858 if (getPageIndicator() != null) { 1859 getPageIndicator().setAlpha(finalHotseatAndPageIndicatorAlpha); 1860 } 1861 } 1862 1863 if (stateIsSpringLoaded) { 1864 // Right now we're covered by Apps Customize 1865 // Show the background gradient immediately, so the gradient will 1866 // be showing once AppsCustomize disappears 1867 animateBackgroundGradient(getResources().getInteger( 1868 R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, false); 1869 } else { 1870 // Fade the background gradient away 1871 animateBackgroundGradient(0f, true); 1872 } 1873 return anim; 1874 } 1875 1876 class AlphaUpdateListener implements AnimatorUpdateListener { 1877 View view; 1878 public AlphaUpdateListener(View v) { 1879 view = v; 1880 } 1881 1882 @Override 1883 public void onAnimationUpdate(ValueAnimator arg0) { 1884 if (view.getAlpha() < ALPHA_CUTOFF_THRESHOLD && view.getVisibility() != INVISIBLE) { 1885 view.setVisibility(INVISIBLE); 1886 } else if (view.getAlpha() > ALPHA_CUTOFF_THRESHOLD 1887 && view.getVisibility() != VISIBLE) { 1888 view.setVisibility(VISIBLE); 1889 } 1890 } 1891 1892 } 1893 1894 @Override 1895 public void onLauncherTransitionPrepare(Launcher l, boolean animated, boolean toWorkspace) { 1896 mIsSwitchingState = true; 1897 updateChildrenLayersEnabled(false); 1898 } 1899 1900 @Override 1901 public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) { 1902 } 1903 1904 @Override 1905 public void onLauncherTransitionStep(Launcher l, float t) { 1906 mTransitionProgress = t; 1907 } 1908 1909 @Override 1910 public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) { 1911 mIsSwitchingState = false; 1912 updateChildrenLayersEnabled(false); 1913 // The code in getChangeStateAnimation to determine initialAlpha and finalAlpha will ensure 1914 // ensure that only the current page is visible during (and subsequently, after) the 1915 // transition animation. If fade adjacent pages is disabled, then re-enable the page 1916 // visibility after the transition animation. 1917 if (!mWorkspaceFadeInAdjacentScreens) { 1918 for (int i = 0; i < getChildCount(); i++) { 1919 final CellLayout cl = (CellLayout) getChildAt(i); 1920 cl.setShortcutAndWidgetAlpha(1f); 1921 } 1922 } 1923 } 1924 1925 @Override 1926 public View getContent() { 1927 return this; 1928 } 1929 1930 /** 1931 * Draw the View v into the given Canvas. 1932 * 1933 * @param v the view to draw 1934 * @param destCanvas the canvas to draw on 1935 * @param padding the horizontal and vertical padding to use when drawing 1936 */ 1937 private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { 1938 final Rect clipRect = mTempRect; 1939 v.getDrawingRect(clipRect); 1940 1941 boolean textVisible = false; 1942 1943 destCanvas.save(); 1944 if (v instanceof TextView && pruneToDrawable) { 1945 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1946 clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); 1947 destCanvas.translate(padding / 2, padding / 2); 1948 d.draw(destCanvas); 1949 } else { 1950 if (v instanceof FolderIcon) { 1951 // For FolderIcons the text can bleed into the icon area, and so we need to 1952 // hide the text completely (which can't be achieved by clipping). 1953 if (((FolderIcon) v).getTextVisible()) { 1954 ((FolderIcon) v).setTextVisible(false); 1955 textVisible = true; 1956 } 1957 } else if (v instanceof BubbleTextView) { 1958 final BubbleTextView tv = (BubbleTextView) v; 1959 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1960 tv.getLayout().getLineTop(0); 1961 } else if (v instanceof TextView) { 1962 final TextView tv = (TextView) v; 1963 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1964 tv.getLayout().getLineTop(0); 1965 } 1966 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1967 destCanvas.clipRect(clipRect, Op.REPLACE); 1968 v.draw(destCanvas); 1969 1970 // Restore text visibility of FolderIcon if necessary 1971 if (textVisible) { 1972 ((FolderIcon) v).setTextVisible(true); 1973 } 1974 } 1975 destCanvas.restore(); 1976 } 1977 1978 /** 1979 * Returns a new bitmap to show when the given View is being dragged around. 1980 * Responsibility for the bitmap is transferred to the caller. 1981 */ 1982 public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1983 Bitmap b; 1984 1985 if (v instanceof TextView) { 1986 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1987 b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, 1988 d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); 1989 } else { 1990 b = Bitmap.createBitmap( 1991 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1992 } 1993 1994 canvas.setBitmap(b); 1995 drawDragView(v, canvas, padding, true); 1996 canvas.setBitmap(null); 1997 1998 return b; 1999 } 2000 2001 /** 2002 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2003 * Responsibility for the bitmap is transferred to the caller. 2004 */ 2005 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 2006 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 2007 final Bitmap b = Bitmap.createBitmap( 2008 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 2009 2010 canvas.setBitmap(b); 2011 drawDragView(v, canvas, padding, true); 2012 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2013 canvas.setBitmap(null); 2014 return b; 2015 } 2016 2017 /** 2018 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2019 * Responsibility for the bitmap is transferred to the caller. 2020 */ 2021 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h, 2022 boolean clipAlpha) { 2023 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 2024 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 2025 canvas.setBitmap(b); 2026 2027 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 2028 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 2029 (h - padding) / (float) orig.getHeight()); 2030 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 2031 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 2032 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 2033 2034 // center the image 2035 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 2036 2037 canvas.drawBitmap(orig, src, dst, null); 2038 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor, 2039 clipAlpha); 2040 canvas.setBitmap(null); 2041 2042 return b; 2043 } 2044 2045 void startDrag(CellLayout.CellInfo cellInfo) { 2046 View child = cellInfo.cell; 2047 2048 // Make sure the drag was started by a long press as opposed to a long click. 2049 if (!child.isInTouchMode()) { 2050 return; 2051 } 2052 2053 mDragInfo = cellInfo; 2054 child.setVisibility(INVISIBLE); 2055 CellLayout layout = (CellLayout) child.getParent().getParent(); 2056 layout.prepareChildForDrag(child); 2057 2058 child.clearFocus(); 2059 child.setPressed(false); 2060 2061 final Canvas canvas = new Canvas(); 2062 2063 // The outline is used to visualize where the item will land if dropped 2064 mDragOutline = createDragOutline(child, canvas, DRAG_BITMAP_PADDING); 2065 beginDragShared(child, this); 2066 } 2067 2068 public void beginDragShared(View child, DragSource source) { 2069 // The drag bitmap follows the touch point around on the screen 2070 final Bitmap b = createDragBitmap(child, new Canvas(), DRAG_BITMAP_PADDING); 2071 2072 final int bmpWidth = b.getWidth(); 2073 final int bmpHeight = b.getHeight(); 2074 2075 float scale = mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 2076 int dragLayerX = 2077 Math.round(mTempXY[0] - (bmpWidth - scale * child.getWidth()) / 2); 2078 int dragLayerY = 2079 Math.round(mTempXY[1] - (bmpHeight - scale * bmpHeight) / 2 2080 - DRAG_BITMAP_PADDING / 2); 2081 2082 LauncherAppState app = LauncherAppState.getInstance(); 2083 DeviceProfile grid = app.getDynamicGrid().getDeviceProfile(); 2084 Point dragVisualizeOffset = null; 2085 Rect dragRect = null; 2086 if (child instanceof BubbleTextView || child instanceof PagedViewIcon) { 2087 int iconSize = grid.iconSizePx; 2088 int top = child.getPaddingTop(); 2089 int left = (bmpWidth - iconSize) / 2; 2090 int right = left + iconSize; 2091 int bottom = top + iconSize; 2092 dragLayerY += top; 2093 // Note: The drag region is used to calculate drag layer offsets, but the 2094 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 2095 dragVisualizeOffset = new Point(-DRAG_BITMAP_PADDING / 2, DRAG_BITMAP_PADDING / 2); 2096 dragRect = new Rect(left, top, right, bottom); 2097 } else if (child instanceof FolderIcon) { 2098 int previewSize = grid.folderIconSizePx; 2099 dragRect = new Rect(0, child.getPaddingTop(), child.getWidth(), previewSize); 2100 } 2101 2102 // Clear the pressed state if necessary 2103 if (child instanceof BubbleTextView) { 2104 BubbleTextView icon = (BubbleTextView) child; 2105 icon.clearPressedOrFocusedBackground(); 2106 } 2107 2108 mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 2109 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect, scale); 2110 b.recycle(); 2111 } 2112 2113 void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, long screenId, 2114 int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { 2115 View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); 2116 2117 final int[] cellXY = new int[2]; 2118 target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 2119 addInScreen(view, container, screenId, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 2120 2121 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screenId, cellXY[0], 2122 cellXY[1]); 2123 } 2124 2125 public boolean transitionStateShouldAllowDrop() { 2126 return ((!isSwitchingState() || mTransitionProgress > 0.5f) && mState != State.SMALL); 2127 } 2128 2129 /** 2130 * {@inheritDoc} 2131 */ 2132 public boolean acceptDrop(DragObject d) { 2133 // If it's an external drop (e.g. from All Apps), check if it should be accepted 2134 CellLayout dropTargetLayout = mDropToLayout; 2135 if (d.dragSource != this) { 2136 // Don't accept the drop if we're not over a screen at time of drop 2137 if (dropTargetLayout == null) { 2138 return false; 2139 } 2140 if (!transitionStateShouldAllowDrop()) return false; 2141 2142 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2143 d.dragView, mDragViewVisualCenter); 2144 2145 // We want the point to be mapped to the dragTarget. 2146 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 2147 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2148 } else { 2149 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 2150 } 2151 2152 int spanX = 1; 2153 int spanY = 1; 2154 if (mDragInfo != null) { 2155 final CellLayout.CellInfo dragCellInfo = mDragInfo; 2156 spanX = dragCellInfo.spanX; 2157 spanY = dragCellInfo.spanY; 2158 } else { 2159 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 2160 spanX = dragInfo.spanX; 2161 spanY = dragInfo.spanY; 2162 } 2163 2164 int minSpanX = spanX; 2165 int minSpanY = spanY; 2166 if (d.dragInfo instanceof PendingAddWidgetInfo) { 2167 minSpanX = ((PendingAddWidgetInfo) d.dragInfo).minSpanX; 2168 minSpanY = ((PendingAddWidgetInfo) d.dragInfo).minSpanY; 2169 } 2170 2171 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2172 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, dropTargetLayout, 2173 mTargetCell); 2174 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2175 mDragViewVisualCenter[1], mTargetCell); 2176 if (willCreateUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, 2177 mTargetCell, distance, true)) { 2178 return true; 2179 } 2180 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, 2181 mTargetCell, distance)) { 2182 return true; 2183 } 2184 2185 int[] resultSpan = new int[2]; 2186 mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], 2187 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2188 null, mTargetCell, resultSpan, CellLayout.MODE_ACCEPT_DROP); 2189 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2190 2191 // Don't accept the drop if there's no room for the item 2192 if (!foundCell) { 2193 // Don't show the message if we are dropping on the AllApps button and the hotseat 2194 // is full 2195 boolean isHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2196 if (mTargetCell != null && isHotseat) { 2197 Hotseat hotseat = mLauncher.getHotseat(); 2198 if (hotseat.isAllAppsButtonRank( 2199 hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { 2200 return false; 2201 } 2202 } 2203 2204 mLauncher.showOutOfSpaceMessage(isHotseat); 2205 return false; 2206 } 2207 } 2208 2209 long screenId = getIdForScreen(dropTargetLayout); 2210 if (screenId == EXTRA_EMPTY_SCREEN_ID) { 2211 commitExtraEmptyScreen(); 2212 } 2213 2214 return true; 2215 } 2216 2217 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, float 2218 distance, boolean considerTimeout) { 2219 if (distance > mMaxDistanceForFolderCreation) return false; 2220 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2221 2222 if (dropOverView != null) { 2223 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2224 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2225 return false; 2226 } 2227 } 2228 2229 boolean hasntMoved = false; 2230 if (mDragInfo != null) { 2231 hasntMoved = dropOverView == mDragInfo.cell; 2232 } 2233 2234 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2235 return false; 2236 } 2237 2238 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2239 boolean willBecomeShortcut = 2240 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2241 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2242 2243 return (aboveShortcut && willBecomeShortcut); 2244 } 2245 2246 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell, 2247 float distance) { 2248 if (distance > mMaxDistanceForFolderCreation) return false; 2249 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2250 2251 if (dropOverView != null) { 2252 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2253 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2254 return false; 2255 } 2256 } 2257 2258 if (dropOverView instanceof FolderIcon) { 2259 FolderIcon fi = (FolderIcon) dropOverView; 2260 if (fi.acceptDrop(dragInfo)) { 2261 return true; 2262 } 2263 } 2264 return false; 2265 } 2266 2267 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2268 int[] targetCell, float distance, boolean external, DragView dragView, 2269 Runnable postAnimationRunnable) { 2270 if (distance > mMaxDistanceForFolderCreation) return false; 2271 View v = target.getChildAt(targetCell[0], targetCell[1]); 2272 2273 boolean hasntMoved = false; 2274 if (mDragInfo != null) { 2275 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2276 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2277 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2278 } 2279 2280 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2281 mCreateUserFolderOnDrop = false; 2282 final long screenId = (targetCell == null) ? mDragInfo.screenId : getIdForScreen(target); 2283 2284 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2285 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2286 2287 if (aboveShortcut && willBecomeShortcut) { 2288 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2289 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2290 // if the drag started here, we need to remove it from the workspace 2291 if (!external) { 2292 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2293 } 2294 2295 Rect folderLocation = new Rect(); 2296 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2297 target.removeView(v); 2298 2299 FolderIcon fi = 2300 mLauncher.addFolder(target, container, screenId, targetCell[0], targetCell[1]); 2301 destInfo.cellX = -1; 2302 destInfo.cellY = -1; 2303 sourceInfo.cellX = -1; 2304 sourceInfo.cellY = -1; 2305 2306 // If the dragView is null, we can't animate 2307 boolean animate = dragView != null; 2308 if (animate) { 2309 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2310 postAnimationRunnable); 2311 } else { 2312 fi.addItem(destInfo); 2313 fi.addItem(sourceInfo); 2314 } 2315 return true; 2316 } 2317 return false; 2318 } 2319 2320 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2321 float distance, DragObject d, boolean external) { 2322 if (distance > mMaxDistanceForFolderCreation) return false; 2323 2324 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2325 if (!mAddToExistingFolderOnDrop) return false; 2326 mAddToExistingFolderOnDrop = false; 2327 2328 if (dropOverView instanceof FolderIcon) { 2329 FolderIcon fi = (FolderIcon) dropOverView; 2330 if (fi.acceptDrop(d.dragInfo)) { 2331 fi.onDrop(d); 2332 2333 // if the drag started here, we need to remove it from the workspace 2334 if (!external) { 2335 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2336 } 2337 return true; 2338 } 2339 } 2340 return false; 2341 } 2342 2343 public void onDrop(final DragObject d) { 2344 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2345 mDragViewVisualCenter); 2346 2347 CellLayout dropTargetLayout = mDropToLayout; 2348 2349 // We want the point to be mapped to the dragTarget. 2350 if (dropTargetLayout != null) { 2351 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 2352 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2353 } else { 2354 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 2355 } 2356 } 2357 2358 int snapScreen = -1; 2359 boolean resizeOnDrop = false; 2360 if (d.dragSource != this) { 2361 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2362 (int) mDragViewVisualCenter[1] }; 2363 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2364 } else if (mDragInfo != null) { 2365 final View cell = mDragInfo.cell; 2366 2367 Runnable resizeRunnable = null; 2368 if (dropTargetLayout != null && !d.cancelled) { 2369 // Move internally 2370 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2371 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2372 long container = hasMovedIntoHotseat ? 2373 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2374 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2375 long screenId = (mTargetCell[0] < 0) ? 2376 mDragInfo.screenId : getIdForScreen(dropTargetLayout); 2377 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2378 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2379 // First we find the cell nearest to point at which the item is 2380 // dropped, without any consideration to whether there is an item there. 2381 2382 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2383 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2384 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2385 mDragViewVisualCenter[1], mTargetCell); 2386 2387 // If the item being dropped is a shortcut and the nearest drop 2388 // cell also contains a shortcut, then create a folder with the two shortcuts. 2389 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2390 dropTargetLayout, mTargetCell, distance, false, d.dragView, null)) { 2391 stripEmptyScreens(); 2392 return; 2393 } 2394 2395 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, 2396 distance, d, false)) { 2397 stripEmptyScreens(); 2398 return; 2399 } 2400 2401 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2402 // we need to find the nearest cell location that is vacant 2403 ItemInfo item = (ItemInfo) d.dragInfo; 2404 int minSpanX = item.spanX; 2405 int minSpanY = item.spanY; 2406 if (item.minSpanX > 0 && item.minSpanY > 0) { 2407 minSpanX = item.minSpanX; 2408 minSpanY = item.minSpanY; 2409 } 2410 2411 int[] resultSpan = new int[2]; 2412 mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], 2413 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, cell, 2414 mTargetCell, resultSpan, CellLayout.MODE_ON_DROP); 2415 2416 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2417 2418 // if the widget resizes on drop 2419 if (foundCell && (cell instanceof AppWidgetHostView) && 2420 (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY)) { 2421 resizeOnDrop = true; 2422 item.spanX = resultSpan[0]; 2423 item.spanY = resultSpan[1]; 2424 AppWidgetHostView awhv = (AppWidgetHostView) cell; 2425 AppWidgetResizeFrame.updateWidgetSizeRanges(awhv, mLauncher, resultSpan[0], 2426 resultSpan[1]); 2427 } 2428 2429 if (getScreenIdForPageIndex(mCurrentPage) != screenId && !hasMovedIntoHotseat) { 2430 snapScreen = getPageIndexForScreenId(screenId); 2431 snapToPage(snapScreen); 2432 } 2433 2434 if (foundCell) { 2435 final ItemInfo info = (ItemInfo) cell.getTag(); 2436 if (hasMovedLayouts) { 2437 // Reparent the view 2438 getParentCellLayoutForView(cell).removeView(cell); 2439 addInScreen(cell, container, screenId, mTargetCell[0], mTargetCell[1], 2440 info.spanX, info.spanY); 2441 } 2442 2443 // update the item's position after drop 2444 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2445 lp.cellX = lp.tmpCellX = mTargetCell[0]; 2446 lp.cellY = lp.tmpCellY = mTargetCell[1]; 2447 lp.cellHSpan = item.spanX; 2448 lp.cellVSpan = item.spanY; 2449 lp.isLockedToGrid = true; 2450 cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screenId, 2451 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2452 2453 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2454 cell instanceof LauncherAppWidgetHostView) { 2455 final CellLayout cellLayout = dropTargetLayout; 2456 // We post this call so that the widget has a chance to be placed 2457 // in its final location 2458 2459 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2460 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2461 if (pinfo != null && 2462 pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2463 final Runnable addResizeFrame = new Runnable() { 2464 public void run() { 2465 DragLayer dragLayer = mLauncher.getDragLayer(); 2466 dragLayer.addResizeFrame(info, hostView, cellLayout); 2467 } 2468 }; 2469 resizeRunnable = (new Runnable() { 2470 public void run() { 2471 if (!isPageMoving()) { 2472 addResizeFrame.run(); 2473 } else { 2474 mDelayedResizeRunnable = addResizeFrame; 2475 } 2476 } 2477 }); 2478 } 2479 } 2480 2481 LauncherModel.moveItemInDatabase(mLauncher, info, container, screenId, lp.cellX, 2482 lp.cellY); 2483 } else { 2484 // If we can't find a drop location, we return the item to its original position 2485 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2486 mTargetCell[0] = lp.cellX; 2487 mTargetCell[1] = lp.cellY; 2488 CellLayout layout = (CellLayout) cell.getParent().getParent(); 2489 layout.markCellsAsOccupiedForView(cell); 2490 } 2491 } 2492 2493 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2494 final Runnable finalResizeRunnable = resizeRunnable; 2495 // Prepare it to be animated into its new position 2496 // This must be called after the view has been re-parented 2497 final Runnable onCompleteRunnable = new Runnable() { 2498 @Override 2499 public void run() { 2500 mAnimatingViewIntoPlace = false; 2501 updateChildrenLayersEnabled(false); 2502 if (finalResizeRunnable != null) { 2503 finalResizeRunnable.run(); 2504 } 2505 stripEmptyScreens(); 2506 } 2507 }; 2508 mAnimatingViewIntoPlace = true; 2509 if (d.dragView.hasDrawn()) { 2510 final ItemInfo info = (ItemInfo) cell.getTag(); 2511 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET) { 2512 int animationType = resizeOnDrop ? ANIMATE_INTO_POSITION_AND_RESIZE : 2513 ANIMATE_INTO_POSITION_AND_DISAPPEAR; 2514 animateWidgetDrop(info, parent, d.dragView, 2515 onCompleteRunnable, animationType, cell, false); 2516 } else { 2517 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2518 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2519 onCompleteRunnable, this); 2520 } 2521 } else { 2522 d.deferDragViewCleanupPostAnimation = false; 2523 cell.setVisibility(VISIBLE); 2524 } 2525 parent.onDropChild(cell); 2526 } 2527 } 2528 2529 public void setFinalScrollForPageChange(int pageIndex) { 2530 CellLayout cl = (CellLayout) getChildAt(pageIndex); 2531 if (cl != null) { 2532 mSavedScrollX = getScrollX(); 2533 mSavedTranslationX = cl.getTranslationX(); 2534 mSavedRotationY = cl.getRotationY(); 2535 final int newX = getScrollForPage(pageIndex); 2536 setScrollX(newX); 2537 cl.setTranslationX(0f); 2538 cl.setRotationY(0f); 2539 } 2540 } 2541 2542 public void resetFinalScrollForPageChange(int pageIndex) { 2543 if (pageIndex >= 0) { 2544 CellLayout cl = (CellLayout) getChildAt(pageIndex); 2545 setScrollX(mSavedScrollX); 2546 cl.setTranslationX(mSavedTranslationX); 2547 cl.setRotationY(mSavedRotationY); 2548 } 2549 } 2550 2551 public void getViewLocationRelativeToSelf(View v, int[] location) { 2552 getLocationInWindow(location); 2553 int x = location[0]; 2554 int y = location[1]; 2555 2556 v.getLocationInWindow(location); 2557 int vX = location[0]; 2558 int vY = location[1]; 2559 2560 location[0] = vX - x; 2561 location[1] = vY - y; 2562 } 2563 2564 public void onDragEnter(DragObject d) { 2565 mDragEnforcer.onDragEnter(); 2566 mCreateUserFolderOnDrop = false; 2567 mAddToExistingFolderOnDrop = false; 2568 2569 mDropToLayout = null; 2570 CellLayout layout = getCurrentDropLayout(); 2571 setCurrentDropLayout(layout); 2572 setCurrentDragOverlappingLayout(layout); 2573 2574 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2575 // don't need to show the outlines 2576 if (LauncherAppState.getInstance().isScreenLarge()) { 2577 showOutlines(); 2578 } 2579 } 2580 2581 static Rect getCellLayoutMetrics(Launcher launcher, int orientation) { 2582 LauncherAppState app = LauncherAppState.getInstance(); 2583 DeviceProfile grid = app.getDynamicGrid().getDeviceProfile(); 2584 2585 Resources res = launcher.getResources(); 2586 Display display = launcher.getWindowManager().getDefaultDisplay(); 2587 Point smallestSize = new Point(); 2588 Point largestSize = new Point(); 2589 display.getCurrentSizeRange(smallestSize, largestSize); 2590 int countX = (int) grid.numColumns; 2591 int countY = (int) grid.numRows; 2592 if (orientation == CellLayout.LANDSCAPE) { 2593 if (mLandscapeCellLayoutMetrics == null) { 2594 Rect padding = grid.getWorkspacePadding(CellLayout.LANDSCAPE); 2595 int width = largestSize.x - padding.left - padding.right; 2596 int height = smallestSize.y - padding.top - padding.bottom; 2597 mLandscapeCellLayoutMetrics = new Rect(); 2598 CellLayout.getMetrics(mLandscapeCellLayoutMetrics, width, height, 2599 countX, countY); 2600 } 2601 return mLandscapeCellLayoutMetrics; 2602 } else if (orientation == CellLayout.PORTRAIT) { 2603 if (mPortraitCellLayoutMetrics == null) { 2604 Rect padding = grid.getWorkspacePadding(CellLayout.PORTRAIT); 2605 int width = smallestSize.x - padding.left - padding.right; 2606 int height = largestSize.y - padding.top - padding.bottom; 2607 mPortraitCellLayoutMetrics = new Rect(); 2608 CellLayout.getMetrics(mPortraitCellLayoutMetrics, width, height, 2609 countX, countY); 2610 } 2611 return mPortraitCellLayoutMetrics; 2612 } 2613 return null; 2614 } 2615 2616 public void onDragExit(DragObject d) { 2617 mDragEnforcer.onDragExit(); 2618 2619 // Here we store the final page that will be dropped to, if the workspace in fact 2620 // receives the drop 2621 if (mInScrollArea) { 2622 if (isPageMoving()) { 2623 // If the user drops while the page is scrolling, we should use that page as the 2624 // destination instead of the page that is being hovered over. 2625 mDropToLayout = (CellLayout) getPageAt(getNextPage()); 2626 } else { 2627 mDropToLayout = mDragOverlappingLayout; 2628 } 2629 } else { 2630 mDropToLayout = mDragTargetLayout; 2631 } 2632 2633 if (mDragMode == DRAG_MODE_CREATE_FOLDER) { 2634 mCreateUserFolderOnDrop = true; 2635 } else if (mDragMode == DRAG_MODE_ADD_TO_FOLDER) { 2636 mAddToExistingFolderOnDrop = true; 2637 } 2638 2639 // Reset the scroll area and previous drag target 2640 onResetScrollArea(); 2641 setCurrentDropLayout(null); 2642 setCurrentDragOverlappingLayout(null); 2643 2644 mSpringLoadedDragController.cancel(); 2645 2646 if (!mIsPageMoving) { 2647 hideOutlines(); 2648 } 2649 } 2650 2651 void setCurrentDropLayout(CellLayout layout) { 2652 if (mDragTargetLayout != null) { 2653 mDragTargetLayout.revertTempState(); 2654 mDragTargetLayout.onDragExit(); 2655 } 2656 mDragTargetLayout = layout; 2657 if (mDragTargetLayout != null) { 2658 mDragTargetLayout.onDragEnter(); 2659 } 2660 cleanupReorder(true); 2661 cleanupFolderCreation(); 2662 setCurrentDropOverCell(-1, -1); 2663 } 2664 2665 void setCurrentDragOverlappingLayout(CellLayout layout) { 2666 if (mDragOverlappingLayout != null) { 2667 mDragOverlappingLayout.setIsDragOverlapping(false); 2668 } 2669 mDragOverlappingLayout = layout; 2670 if (mDragOverlappingLayout != null) { 2671 mDragOverlappingLayout.setIsDragOverlapping(true); 2672 } 2673 invalidate(); 2674 } 2675 2676 void setCurrentDropOverCell(int x, int y) { 2677 if (x != mDragOverX || y != mDragOverY) { 2678 mDragOverX = x; 2679 mDragOverY = y; 2680 setDragMode(DRAG_MODE_NONE); 2681 } 2682 } 2683 2684 void setDragMode(int dragMode) { 2685 if (dragMode != mDragMode) { 2686 if (dragMode == DRAG_MODE_NONE) { 2687 cleanupAddToFolder(); 2688 // We don't want to cancel the re-order alarm every time the target cell changes 2689 // as this feels to slow / unresponsive. 2690 cleanupReorder(false); 2691 cleanupFolderCreation(); 2692 } else if (dragMode == DRAG_MODE_ADD_TO_FOLDER) { 2693 cleanupReorder(true); 2694 cleanupFolderCreation(); 2695 } else if (dragMode == DRAG_MODE_CREATE_FOLDER) { 2696 cleanupAddToFolder(); 2697 cleanupReorder(true); 2698 } else if (dragMode == DRAG_MODE_REORDER) { 2699 cleanupAddToFolder(); 2700 cleanupFolderCreation(); 2701 } 2702 mDragMode = dragMode; 2703 } 2704 } 2705 2706 private void cleanupFolderCreation() { 2707 if (mDragFolderRingAnimator != null) { 2708 mDragFolderRingAnimator.animateToNaturalState(); 2709 } 2710 mFolderCreationAlarm.cancelAlarm(); 2711 } 2712 2713 private void cleanupAddToFolder() { 2714 if (mDragOverFolderIcon != null) { 2715 mDragOverFolderIcon.onDragExit(null); 2716 mDragOverFolderIcon = null; 2717 } 2718 } 2719 2720 private void cleanupReorder(boolean cancelAlarm) { 2721 // Any pending reorders are canceled 2722 if (cancelAlarm) { 2723 mReorderAlarm.cancelAlarm(); 2724 } 2725 mLastReorderX = -1; 2726 mLastReorderY = -1; 2727 } 2728 2729 /* 2730 * 2731 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2732 * coordinate space. The argument xy is modified with the return result. 2733 * 2734 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2735 * computing it itself; we use this to avoid redundant matrix inversions in 2736 * findMatchingPageForDragOver 2737 * 2738 */ 2739 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2740 xy[0] = xy[0] - v.getLeft(); 2741 xy[1] = xy[1] - v.getTop(); 2742 } 2743 2744 boolean isPointInSelfOverHotseat(int x, int y, Rect r) { 2745 if (r == null) { 2746 r = new Rect(); 2747 } 2748 mTempPt[0] = x; 2749 mTempPt[1] = y; 2750 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(this, mTempPt, true); 2751 mLauncher.getHotseat().getHitRect(r); 2752 if (r.contains(mTempPt[0], mTempPt[1])) { 2753 return true; 2754 } 2755 return false; 2756 } 2757 2758 void mapPointFromSelfToHotseatLayout(Hotseat hotseat, float[] xy) { 2759 mTempPt[0] = (int) xy[0]; 2760 mTempPt[1] = (int) xy[1]; 2761 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(this, mTempPt, true); 2762 mLauncher.getDragLayer().mapCoordInSelfToDescendent(hotseat.getLayout(), mTempPt); 2763 2764 xy[0] = mTempPt[0]; 2765 xy[1] = mTempPt[1]; 2766 } 2767 2768 /* 2769 * 2770 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2771 * the parent View's coordinate space. The argument xy is modified with the return result. 2772 * 2773 */ 2774 void mapPointFromChildToSelf(View v, float[] xy) { 2775 xy[0] += v.getLeft(); 2776 xy[1] += v.getTop(); 2777 } 2778 2779 static private float squaredDistance(float[] point1, float[] point2) { 2780 float distanceX = point1[0] - point2[0]; 2781 float distanceY = point2[1] - point2[1]; 2782 return distanceX * distanceX + distanceY * distanceY; 2783 } 2784 2785 /* 2786 * 2787 * This method returns the CellLayout that is currently being dragged to. In order to drag 2788 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2789 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2790 * 2791 * Return null if no CellLayout is currently being dragged over 2792 * 2793 */ 2794 private CellLayout findMatchingPageForDragOver( 2795 DragView dragView, float originX, float originY, boolean exact) { 2796 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2797 // with the item being dragged and then choose the one that's closest to the touch point 2798 final int screenCount = getChildCount(); 2799 CellLayout bestMatchingScreen = null; 2800 float smallestDistSoFar = Float.MAX_VALUE; 2801 2802 for (int i = 0; i < screenCount; i++) { 2803 CellLayout cl = (CellLayout) getChildAt(i); 2804 2805 final float[] touchXy = {originX, originY}; 2806 // Transform the touch coordinates to the CellLayout's local coordinates 2807 // If the touch point is within the bounds of the cell layout, we can return immediately 2808 cl.getMatrix().invert(mTempInverseMatrix); 2809 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2810 2811 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2812 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2813 return cl; 2814 } 2815 2816 if (!exact) { 2817 // Get the center of the cell layout in screen coordinates 2818 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2819 cellLayoutCenter[0] = cl.getWidth()/2; 2820 cellLayoutCenter[1] = cl.getHeight()/2; 2821 mapPointFromChildToSelf(cl, cellLayoutCenter); 2822 2823 touchXy[0] = originX; 2824 touchXy[1] = originY; 2825 2826 // Calculate the distance between the center of the CellLayout 2827 // and the touch point 2828 float dist = squaredDistance(touchXy, cellLayoutCenter); 2829 2830 if (dist < smallestDistSoFar) { 2831 smallestDistSoFar = dist; 2832 bestMatchingScreen = cl; 2833 } 2834 } 2835 } 2836 return bestMatchingScreen; 2837 } 2838 2839 // This is used to compute the visual center of the dragView. This point is then 2840 // used to visualize drop locations and determine where to drop an item. The idea is that 2841 // the visual center represents the user's interpretation of where the item is, and hence 2842 // is the appropriate point to use when determining drop location. 2843 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2844 DragView dragView, float[] recycle) { 2845 float res[]; 2846 if (recycle == null) { 2847 res = new float[2]; 2848 } else { 2849 res = recycle; 2850 } 2851 2852 // First off, the drag view has been shifted in a way that is not represented in the 2853 // x and y values or the x/yOffsets. Here we account for that shift. 2854 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2855 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2856 2857 // These represent the visual top and left of drag view if a dragRect was provided. 2858 // If a dragRect was not provided, then they correspond to the actual view left and 2859 // top, as the dragRect is in that case taken to be the entire dragView. 2860 // R.dimen.dragViewOffsetY. 2861 int left = x - xOffset; 2862 int top = y - yOffset; 2863 2864 // In order to find the visual center, we shift by half the dragRect 2865 res[0] = left + dragView.getDragRegion().width() / 2; 2866 res[1] = top + dragView.getDragRegion().height() / 2; 2867 2868 return res; 2869 } 2870 2871 private boolean isDragWidget(DragObject d) { 2872 return (d.dragInfo instanceof LauncherAppWidgetInfo || 2873 d.dragInfo instanceof PendingAddWidgetInfo); 2874 } 2875 private boolean isExternalDragWidget(DragObject d) { 2876 return d.dragSource != this && isDragWidget(d); 2877 } 2878 2879 public void onDragOver(DragObject d) { 2880 // Skip drag over events while we are dragging over side pages 2881 if (mInScrollArea || mIsSwitchingState || mState == State.SMALL) return; 2882 2883 Rect r = new Rect(); 2884 CellLayout layout = null; 2885 ItemInfo item = (ItemInfo) d.dragInfo; 2886 2887 // Ensure that we have proper spans for the item that we are dropping 2888 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2889 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2890 d.dragView, mDragViewVisualCenter); 2891 2892 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2893 // Identify whether we have dragged over a side page 2894 if (isSmall()) { 2895 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 2896 if (isPointInSelfOverHotseat(d.x, d.y, r)) { 2897 layout = mLauncher.getHotseat().getLayout(); 2898 } 2899 } 2900 if (layout == null) { 2901 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false); 2902 } 2903 if (layout != mDragTargetLayout) { 2904 setCurrentDropLayout(layout); 2905 setCurrentDragOverlappingLayout(layout); 2906 2907 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 2908 if (isInSpringLoadedMode) { 2909 if (mLauncher.isHotseatLayout(layout)) { 2910 mSpringLoadedDragController.cancel(); 2911 } else { 2912 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2913 } 2914 } 2915 } 2916 } else { 2917 // Test to see if we are over the hotseat otherwise just use the current page 2918 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 2919 if (isPointInSelfOverHotseat(d.x, d.y, r)) { 2920 layout = mLauncher.getHotseat().getLayout(); 2921 } 2922 } 2923 if (layout == null) { 2924 layout = getCurrentDropLayout(); 2925 } 2926 if (layout != mDragTargetLayout) { 2927 setCurrentDropLayout(layout); 2928 setCurrentDragOverlappingLayout(layout); 2929 } 2930 } 2931 2932 // Handle the drag over 2933 if (mDragTargetLayout != null) { 2934 // We want the point to be mapped to the dragTarget. 2935 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2936 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2937 } else { 2938 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2939 } 2940 2941 ItemInfo info = (ItemInfo) d.dragInfo; 2942 2943 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2944 (int) mDragViewVisualCenter[1], item.spanX, item.spanY, 2945 mDragTargetLayout, mTargetCell); 2946 2947 setCurrentDropOverCell(mTargetCell[0], mTargetCell[1]); 2948 2949 float targetCellDistance = mDragTargetLayout.getDistanceFromCell( 2950 mDragViewVisualCenter[0], mDragViewVisualCenter[1], mTargetCell); 2951 2952 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2953 mTargetCell[1]); 2954 2955 manageFolderFeedback(info, mDragTargetLayout, mTargetCell, 2956 targetCellDistance, dragOverView); 2957 2958 int minSpanX = item.spanX; 2959 int minSpanY = item.spanY; 2960 if (item.minSpanX > 0 && item.minSpanY > 0) { 2961 minSpanX = item.minSpanX; 2962 minSpanY = item.minSpanY; 2963 } 2964 2965 boolean nearestDropOccupied = mDragTargetLayout.isNearestDropLocationOccupied((int) 2966 mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], item.spanX, 2967 item.spanY, child, mTargetCell); 2968 2969 if (!nearestDropOccupied) { 2970 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2971 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2972 mTargetCell[0], mTargetCell[1], item.spanX, item.spanY, false, 2973 d.dragView.getDragVisualizeOffset(), d.dragView.getDragRegion()); 2974 } else if ((mDragMode == DRAG_MODE_NONE || mDragMode == DRAG_MODE_REORDER) 2975 && !mReorderAlarm.alarmPending() && (mLastReorderX != mTargetCell[0] || 2976 mLastReorderY != mTargetCell[1])) { 2977 2978 // Otherwise, if we aren't adding to or creating a folder and there's no pending 2979 // reorder, then we schedule a reorder 2980 ReorderAlarmListener listener = new ReorderAlarmListener(mDragViewVisualCenter, 2981 minSpanX, minSpanY, item.spanX, item.spanY, d.dragView, child); 2982 mReorderAlarm.setOnAlarmListener(listener); 2983 mReorderAlarm.setAlarm(REORDER_TIMEOUT); 2984 } 2985 2986 if (mDragMode == DRAG_MODE_CREATE_FOLDER || mDragMode == DRAG_MODE_ADD_TO_FOLDER || 2987 !nearestDropOccupied) { 2988 if (mDragTargetLayout != null) { 2989 mDragTargetLayout.revertTempState(); 2990 } 2991 } 2992 } 2993 } 2994 2995 private void manageFolderFeedback(ItemInfo info, CellLayout targetLayout, 2996 int[] targetCell, float distance, View dragOverView) { 2997 boolean userFolderPending = willCreateUserFolder(info, targetLayout, targetCell, distance, 2998 false); 2999 3000 if (mDragMode == DRAG_MODE_NONE && userFolderPending && 3001 !mFolderCreationAlarm.alarmPending()) { 3002 mFolderCreationAlarm.setOnAlarmListener(new 3003 FolderCreationAlarmListener(targetLayout, targetCell[0], targetCell[1])); 3004 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 3005 return; 3006 } 3007 3008 boolean willAddToFolder = 3009 willAddToExistingUserFolder(info, targetLayout, targetCell, distance); 3010 3011 if (willAddToFolder && mDragMode == DRAG_MODE_NONE) { 3012 mDragOverFolderIcon = ((FolderIcon) dragOverView); 3013 mDragOverFolderIcon.onDragEnter(info); 3014 if (targetLayout != null) { 3015 targetLayout.clearDragOutlines(); 3016 } 3017 setDragMode(DRAG_MODE_ADD_TO_FOLDER); 3018 return; 3019 } 3020 3021 if (mDragMode == DRAG_MODE_ADD_TO_FOLDER && !willAddToFolder) { 3022 setDragMode(DRAG_MODE_NONE); 3023 } 3024 if (mDragMode == DRAG_MODE_CREATE_FOLDER && !userFolderPending) { 3025 setDragMode(DRAG_MODE_NONE); 3026 } 3027 3028 return; 3029 } 3030 3031 class FolderCreationAlarmListener implements OnAlarmListener { 3032 CellLayout layout; 3033 int cellX; 3034 int cellY; 3035 3036 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 3037 this.layout = layout; 3038 this.cellX = cellX; 3039 this.cellY = cellY; 3040 } 3041 3042 public void onAlarm(Alarm alarm) { 3043 if (mDragFolderRingAnimator == null) { 3044 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 3045 } 3046 mDragFolderRingAnimator.setCell(cellX, cellY); 3047 mDragFolderRingAnimator.setCellLayout(layout); 3048 mDragFolderRingAnimator.animateToAcceptState(); 3049 layout.showFolderAccept(mDragFolderRingAnimator); 3050 layout.clearDragOutlines(); 3051 setDragMode(DRAG_MODE_CREATE_FOLDER); 3052 } 3053 } 3054 3055 class ReorderAlarmListener implements OnAlarmListener { 3056 float[] dragViewCenter; 3057 int minSpanX, minSpanY, spanX, spanY; 3058 DragView dragView; 3059 View child; 3060 3061 public ReorderAlarmListener(float[] dragViewCenter, int minSpanX, int minSpanY, int spanX, 3062 int spanY, DragView dragView, View child) { 3063 this.dragViewCenter = dragViewCenter; 3064 this.minSpanX = minSpanX; 3065 this.minSpanY = minSpanY; 3066 this.spanX = spanX; 3067 this.spanY = spanY; 3068 this.child = child; 3069 this.dragView = dragView; 3070 } 3071 3072 public void onAlarm(Alarm alarm) { 3073 int[] resultSpan = new int[2]; 3074 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 3075 (int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell); 3076 mLastReorderX = mTargetCell[0]; 3077 mLastReorderY = mTargetCell[1]; 3078 3079 mTargetCell = mDragTargetLayout.createArea((int) mDragViewVisualCenter[0], 3080 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 3081 child, mTargetCell, resultSpan, CellLayout.MODE_DRAG_OVER); 3082 3083 if (mTargetCell[0] < 0 || mTargetCell[1] < 0) { 3084 mDragTargetLayout.revertTempState(); 3085 } else { 3086 setDragMode(DRAG_MODE_REORDER); 3087 } 3088 3089 boolean resize = resultSpan[0] != spanX || resultSpan[1] != spanY; 3090 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 3091 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 3092 mTargetCell[0], mTargetCell[1], resultSpan[0], resultSpan[1], resize, 3093 dragView.getDragVisualizeOffset(), dragView.getDragRegion()); 3094 } 3095 } 3096 3097 @Override 3098 public void getHitRectRelativeToDragLayer(Rect outRect) { 3099 // We want the workspace to have the whole area of the display (it will find the correct 3100 // cell layout to drop to in the existing drag/drop logic. 3101 mLauncher.getDragLayer().getDescendantRectRelativeToSelf(this, outRect); 3102 } 3103 3104 /** 3105 * Add the item specified by dragInfo to the given layout. 3106 * @return true if successful 3107 */ 3108 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 3109 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 3110 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 3111 return true; 3112 } 3113 mLauncher.showOutOfSpaceMessage(mLauncher.isHotseatLayout(layout)); 3114 return false; 3115 } 3116 3117 private void onDropExternal(int[] touchXY, Object dragInfo, 3118 CellLayout cellLayout, boolean insertAtFirst) { 3119 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 3120 } 3121 3122 /** 3123 * Drop an item that didn't originate on one of the workspace screens. 3124 * It may have come from Launcher (e.g. from all apps or customize), or it may have 3125 * come from another app altogether. 3126 * 3127 * NOTE: This can also be called when we are outside of a drag event, when we want 3128 * to add an item to one of the workspace screens. 3129 */ 3130 private void onDropExternal(final int[] touchXY, final Object dragInfo, 3131 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 3132 final Runnable exitSpringLoadedRunnable = new Runnable() { 3133 @Override 3134 public void run() { 3135 mLauncher.exitSpringLoadedDragModeDelayed(true, false, null); 3136 } 3137 }; 3138 3139 ItemInfo info = (ItemInfo) dragInfo; 3140 int spanX = info.spanX; 3141 int spanY = info.spanY; 3142 if (mDragInfo != null) { 3143 spanX = mDragInfo.spanX; 3144 spanY = mDragInfo.spanY; 3145 } 3146 3147 final long container = mLauncher.isHotseatLayout(cellLayout) ? 3148 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 3149 LauncherSettings.Favorites.CONTAINER_DESKTOP; 3150 final long screenId = getIdForScreen(cellLayout); 3151 if (!mLauncher.isHotseatLayout(cellLayout) 3152 && screenId != getScreenIdForPageIndex(mCurrentPage) 3153 && mState != State.SPRING_LOADED) { 3154 snapToScreenId(screenId, null); 3155 } 3156 3157 if (info instanceof PendingAddItemInfo) { 3158 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 3159 3160 boolean findNearestVacantCell = true; 3161 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 3162 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3163 cellLayout, mTargetCell); 3164 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3165 mDragViewVisualCenter[1], mTargetCell); 3166 if (willCreateUserFolder((ItemInfo) d.dragInfo, cellLayout, mTargetCell, 3167 distance, true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 3168 cellLayout, mTargetCell, distance)) { 3169 findNearestVacantCell = false; 3170 } 3171 } 3172 3173 final ItemInfo item = (ItemInfo) d.dragInfo; 3174 boolean updateWidgetSize = false; 3175 if (findNearestVacantCell) { 3176 int minSpanX = item.spanX; 3177 int minSpanY = item.spanY; 3178 if (item.minSpanX > 0 && item.minSpanY > 0) { 3179 minSpanX = item.minSpanX; 3180 minSpanY = item.minSpanY; 3181 } 3182 int[] resultSpan = new int[2]; 3183 mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], 3184 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, info.spanX, info.spanY, 3185 null, mTargetCell, resultSpan, CellLayout.MODE_ON_DROP_EXTERNAL); 3186 3187 if (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY) { 3188 updateWidgetSize = true; 3189 } 3190 item.spanX = resultSpan[0]; 3191 item.spanY = resultSpan[1]; 3192 } 3193 3194 Runnable onAnimationCompleteRunnable = new Runnable() { 3195 @Override 3196 public void run() { 3197 // When dragging and dropping from customization tray, we deal with creating 3198 // widgets/shortcuts/folders in a slightly different way 3199 switch (pendingInfo.itemType) { 3200 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 3201 int span[] = new int[2]; 3202 span[0] = item.spanX; 3203 span[1] = item.spanY; 3204 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, 3205 container, screenId, mTargetCell, span, null); 3206 break; 3207 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3208 mLauncher.processShortcutFromDrop(pendingInfo.componentName, 3209 container, screenId, mTargetCell, null); 3210 break; 3211 default: 3212 throw new IllegalStateException("Unknown item type: " + 3213 pendingInfo.itemType); 3214 } 3215 } 3216 }; 3217 View finalView = pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET 3218 ? ((PendingAddWidgetInfo) pendingInfo).boundWidget : null; 3219 3220 if (finalView instanceof AppWidgetHostView && updateWidgetSize) { 3221 AppWidgetHostView awhv = (AppWidgetHostView) finalView; 3222 AppWidgetResizeFrame.updateWidgetSizeRanges(awhv, mLauncher, item.spanX, 3223 item.spanY); 3224 } 3225 3226 int animationStyle = ANIMATE_INTO_POSITION_AND_DISAPPEAR; 3227 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && 3228 ((PendingAddWidgetInfo) pendingInfo).info.configure != null) { 3229 animationStyle = ANIMATE_INTO_POSITION_AND_REMAIN; 3230 } 3231 animateWidgetDrop(info, cellLayout, d.dragView, onAnimationCompleteRunnable, 3232 animationStyle, finalView, true); 3233 } else { 3234 // This is for other drag/drop cases, like dragging from All Apps 3235 View view = null; 3236 3237 switch (info.itemType) { 3238 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 3239 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3240 if (info.container == NO_ID && info instanceof ApplicationInfo) { 3241 // Came from all apps -- make a copy 3242 info = new ShortcutInfo((ApplicationInfo) info); 3243 } 3244 view = mLauncher.createShortcut(R.layout.application, cellLayout, 3245 (ShortcutInfo) info); 3246 break; 3247 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 3248 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 3249 (FolderInfo) info, mIconCache); 3250 break; 3251 default: 3252 throw new IllegalStateException("Unknown item type: " + info.itemType); 3253 } 3254 3255 // First we find the cell nearest to point at which the item is 3256 // dropped, without any consideration to whether there is an item there. 3257 if (touchXY != null) { 3258 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3259 cellLayout, mTargetCell); 3260 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3261 mDragViewVisualCenter[1], mTargetCell); 3262 d.postAnimationRunnable = exitSpringLoadedRunnable; 3263 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, distance, 3264 true, d.dragView, d.postAnimationRunnable)) { 3265 return; 3266 } 3267 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, distance, d, 3268 true)) { 3269 return; 3270 } 3271 } 3272 3273 if (touchXY != null) { 3274 // when dragging and dropping, just find the closest free spot 3275 mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], 3276 (int) mDragViewVisualCenter[1], 1, 1, 1, 1, 3277 null, mTargetCell, null, CellLayout.MODE_ON_DROP_EXTERNAL); 3278 } else { 3279 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3280 } 3281 addInScreen(view, container, screenId, mTargetCell[0], mTargetCell[1], info.spanX, 3282 info.spanY, insertAtFirst); 3283 cellLayout.onDropChild(view); 3284 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 3285 cellLayout.getShortcutsAndWidgets().measureChild(view); 3286 3287 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screenId, 3288 lp.cellX, lp.cellY); 3289 3290 if (d.dragView != null) { 3291 // We wrap the animation call in the temporary set and reset of the current 3292 // cellLayout to its final transform -- this means we animate the drag view to 3293 // the correct final location. 3294 setFinalTransitionTransform(cellLayout); 3295 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 3296 exitSpringLoadedRunnable); 3297 resetTransitionTransform(cellLayout); 3298 } 3299 } 3300 } 3301 3302 public Bitmap createWidgetBitmap(ItemInfo widgetInfo, View layout) { 3303 int[] unScaledSize = mLauncher.getWorkspace().estimateItemSize(widgetInfo.spanX, 3304 widgetInfo.spanY, widgetInfo, false); 3305 int visibility = layout.getVisibility(); 3306 layout.setVisibility(VISIBLE); 3307 3308 int width = MeasureSpec.makeMeasureSpec(unScaledSize[0], MeasureSpec.EXACTLY); 3309 int height = MeasureSpec.makeMeasureSpec(unScaledSize[1], MeasureSpec.EXACTLY); 3310 Bitmap b = Bitmap.createBitmap(unScaledSize[0], unScaledSize[1], 3311 Bitmap.Config.ARGB_8888); 3312 Canvas c = new Canvas(b); 3313 3314 layout.measure(width, height); 3315 layout.layout(0, 0, unScaledSize[0], unScaledSize[1]); 3316 layout.draw(c); 3317 c.setBitmap(null); 3318 layout.setVisibility(visibility); 3319 return b; 3320 } 3321 3322 private void getFinalPositionForDropAnimation(int[] loc, float[] scaleXY, 3323 DragView dragView, CellLayout layout, ItemInfo info, int[] targetCell, 3324 boolean external, boolean scale) { 3325 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 3326 // location and size on the home screen. 3327 int spanX = info.spanX; 3328 int spanY = info.spanY; 3329 3330 Rect r = estimateItemPosition(layout, info, targetCell[0], targetCell[1], spanX, spanY); 3331 loc[0] = r.left; 3332 loc[1] = r.top; 3333 3334 setFinalTransitionTransform(layout); 3335 float cellLayoutScale = 3336 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(layout, loc, true); 3337 resetTransitionTransform(layout); 3338 3339 float dragViewScaleX; 3340 float dragViewScaleY; 3341 if (scale) { 3342 dragViewScaleX = (1.0f * r.width()) / dragView.getMeasuredWidth(); 3343 dragViewScaleY = (1.0f * r.height()) / dragView.getMeasuredHeight(); 3344 } else { 3345 dragViewScaleX = 1f; 3346 dragViewScaleY = 1f; 3347 } 3348 3349 // The animation will scale the dragView about its center, so we need to center about 3350 // the final location. 3351 loc[0] -= (dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 3352 loc[1] -= (dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 3353 3354 scaleXY[0] = dragViewScaleX * cellLayoutScale; 3355 scaleXY[1] = dragViewScaleY * cellLayoutScale; 3356 } 3357 3358 public void animateWidgetDrop(ItemInfo info, CellLayout cellLayout, DragView dragView, 3359 final Runnable onCompleteRunnable, int animationType, final View finalView, 3360 boolean external) { 3361 Rect from = new Rect(); 3362 mLauncher.getDragLayer().getViewRectRelativeToSelf(dragView, from); 3363 3364 int[] finalPos = new int[2]; 3365 float scaleXY[] = new float[2]; 3366 boolean scalePreview = !(info instanceof PendingAddShortcutInfo); 3367 getFinalPositionForDropAnimation(finalPos, scaleXY, dragView, cellLayout, info, mTargetCell, 3368 external, scalePreview); 3369 3370 Resources res = mLauncher.getResources(); 3371 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration) - 200; 3372 3373 // In the case where we've prebound the widget, we remove it from the DragLayer 3374 if (finalView instanceof AppWidgetHostView && external) { 3375 Log.d(TAG, "6557954 Animate widget drop, final view is appWidgetHostView"); 3376 mLauncher.getDragLayer().removeView(finalView); 3377 } 3378 if ((animationType == ANIMATE_INTO_POSITION_AND_RESIZE || external) && finalView != null) { 3379 Bitmap crossFadeBitmap = createWidgetBitmap(info, finalView); 3380 dragView.setCrossFadeBitmap(crossFadeBitmap); 3381 dragView.crossFade((int) (duration * 0.8f)); 3382 } else if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && external) { 3383 scaleXY[0] = scaleXY[1] = Math.min(scaleXY[0], scaleXY[1]); 3384 } 3385 3386 DragLayer dragLayer = mLauncher.getDragLayer(); 3387 if (animationType == CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION) { 3388 mLauncher.getDragLayer().animateViewIntoPosition(dragView, finalPos, 0f, 0.1f, 0.1f, 3389 DragLayer.ANIMATION_END_DISAPPEAR, onCompleteRunnable, duration); 3390 } else { 3391 int endStyle; 3392 if (animationType == ANIMATE_INTO_POSITION_AND_REMAIN) { 3393 endStyle = DragLayer.ANIMATION_END_REMAIN_VISIBLE; 3394 } else { 3395 endStyle = DragLayer.ANIMATION_END_DISAPPEAR;; 3396 } 3397 3398 Runnable onComplete = new Runnable() { 3399 @Override 3400 public void run() { 3401 if (finalView != null) { 3402 finalView.setVisibility(VISIBLE); 3403 } 3404 if (onCompleteRunnable != null) { 3405 onCompleteRunnable.run(); 3406 } 3407 } 3408 }; 3409 dragLayer.animateViewIntoPosition(dragView, from.left, from.top, finalPos[0], 3410 finalPos[1], 1, 1, 1, scaleXY[0], scaleXY[1], onComplete, endStyle, 3411 duration, this); 3412 } 3413 } 3414 3415 public void setFinalTransitionTransform(CellLayout layout) { 3416 if (isSwitchingState()) { 3417 mCurrentScale = getScaleX(); 3418 setScaleX(mNewScale); 3419 setScaleY(mNewScale); 3420 } 3421 } 3422 public void resetTransitionTransform(CellLayout layout) { 3423 if (isSwitchingState()) { 3424 setScaleX(mCurrentScale); 3425 setScaleY(mCurrentScale); 3426 } 3427 } 3428 3429 /** 3430 * Return the current {@link CellLayout}, correctly picking the destination 3431 * screen while a scroll is in progress. 3432 */ 3433 public CellLayout getCurrentDropLayout() { 3434 return (CellLayout) getChildAt(getNextPage()); 3435 } 3436 3437 /** 3438 * Return the current CellInfo describing our current drag; this method exists 3439 * so that Launcher can sync this object with the correct info when the activity is created/ 3440 * destroyed 3441 * 3442 */ 3443 public CellLayout.CellInfo getDragInfo() { 3444 return mDragInfo; 3445 } 3446 3447 /** 3448 * Calculate the nearest cell where the given object would be dropped. 3449 * 3450 * pixelX and pixelY should be in the coordinate system of layout 3451 */ 3452 private int[] findNearestArea(int pixelX, int pixelY, 3453 int spanX, int spanY, CellLayout layout, int[] recycle) { 3454 return layout.findNearestArea( 3455 pixelX, pixelY, spanX, spanY, recycle); 3456 } 3457 3458 void setup(DragController dragController) { 3459 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3460 mDragController = dragController; 3461 3462 // hardware layers on children are enabled on startup, but should be disabled until 3463 // needed 3464 updateChildrenLayersEnabled(false); 3465 setWallpaperDimension(); 3466 } 3467 3468 /** 3469 * Called at the end of a drag which originated on the workspace. 3470 */ 3471 public void onDropCompleted(final View target, final DragObject d, 3472 final boolean isFlingToDelete, final boolean success) { 3473 if (mDeferDropAfterUninstall) { 3474 mDeferredAction = new Runnable() { 3475 public void run() { 3476 onDropCompleted(target, d, isFlingToDelete, success); 3477 mDeferredAction = null; 3478 } 3479 }; 3480 return; 3481 } 3482 3483 boolean beingCalledAfterUninstall = mDeferredAction != null; 3484 3485 if (success && !(beingCalledAfterUninstall && !mUninstallSuccessful)) { 3486 if (target != this && mDragInfo != null) { 3487 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 3488 if (mDragInfo.cell instanceof DropTarget) { 3489 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 3490 } 3491 // If we move the item to anything not on the Workspace, check if any empty 3492 // screens need to be removed. If we dropped back on the workspace, this will 3493 // be done post drop animation. 3494 stripEmptyScreens(); 3495 } 3496 } else if (mDragInfo != null) { 3497 CellLayout cellLayout; 3498 if (mLauncher.isHotseatLayout(target)) { 3499 cellLayout = mLauncher.getHotseat().getLayout(); 3500 } else { 3501 cellLayout = getScreenWithId(mDragInfo.screenId); 3502 } 3503 cellLayout.onDropChild(mDragInfo.cell); 3504 } 3505 if ((d.cancelled || (beingCalledAfterUninstall && !mUninstallSuccessful)) 3506 && mDragInfo.cell != null) { 3507 mDragInfo.cell.setVisibility(VISIBLE); 3508 } 3509 mDragOutline = null; 3510 mDragInfo = null; 3511 } 3512 3513 public void deferCompleteDropAfterUninstallActivity() { 3514 mDeferDropAfterUninstall = true; 3515 } 3516 3517 /// maybe move this into a smaller part 3518 public void onUninstallActivityReturned(boolean success) { 3519 mDeferDropAfterUninstall = false; 3520 mUninstallSuccessful = success; 3521 if (mDeferredAction != null) { 3522 mDeferredAction.run(); 3523 } 3524 } 3525 3526 void updateItemLocationsInDatabase(CellLayout cl) { 3527 int count = cl.getShortcutsAndWidgets().getChildCount(); 3528 3529 long screenId = getIdForScreen(cl); 3530 int container = Favorites.CONTAINER_DESKTOP; 3531 3532 if (mLauncher.isHotseatLayout(cl)) { 3533 screenId = -1; 3534 container = Favorites.CONTAINER_HOTSEAT; 3535 } 3536 3537 for (int i = 0; i < count; i++) { 3538 View v = cl.getShortcutsAndWidgets().getChildAt(i); 3539 ItemInfo info = (ItemInfo) v.getTag(); 3540 // Null check required as the AllApps button doesn't have an item info 3541 if (info != null && info.requiresDbUpdate) { 3542 info.requiresDbUpdate = false; 3543 LauncherModel.modifyItemInDatabase(mLauncher, info, container, screenId, info.cellX, 3544 info.cellY, info.spanX, info.spanY); 3545 } 3546 } 3547 } 3548 3549 ArrayList<ComponentName> getUniqueComponents(boolean stripDuplicates, ArrayList<ComponentName> duplicates) { 3550 ArrayList<ComponentName> uniqueIntents = new ArrayList<ComponentName>(); 3551 getUniqueIntents((CellLayout) mLauncher.getHotseat().getLayout(), uniqueIntents, duplicates, false); 3552 int count = getChildCount(); 3553 for (int i = 0; i < count; i++) { 3554 CellLayout cl = (CellLayout) getChildAt(i); 3555 getUniqueIntents(cl, uniqueIntents, duplicates, false); 3556 } 3557 return uniqueIntents; 3558 } 3559 3560 void getUniqueIntents(CellLayout cl, ArrayList<ComponentName> uniqueIntents, 3561 ArrayList<ComponentName> duplicates, boolean stripDuplicates) { 3562 int count = cl.getShortcutsAndWidgets().getChildCount(); 3563 3564 ArrayList<View> children = new ArrayList<View>(); 3565 for (int i = 0; i < count; i++) { 3566 View v = cl.getShortcutsAndWidgets().getChildAt(i); 3567 children.add(v); 3568 } 3569 3570 for (int i = 0; i < count; i++) { 3571 View v = children.get(i); 3572 ItemInfo info = (ItemInfo) v.getTag(); 3573 // Null check required as the AllApps button doesn't have an item info 3574 if (info instanceof ShortcutInfo) { 3575 ShortcutInfo si = (ShortcutInfo) info; 3576 ComponentName cn = si.intent.getComponent(); 3577 3578 Uri dataUri = si.intent.getData(); 3579 // If dataUri is not null / empty or if this component isn't one that would 3580 // have previously showed up in the AllApps list, then this is a widget-type 3581 // shortcut, so ignore it. 3582 if (dataUri != null && !dataUri.equals(Uri.EMPTY)) { 3583 continue; 3584 } 3585 3586 if (!uniqueIntents.contains(cn)) { 3587 uniqueIntents.add(cn); 3588 } else { 3589 if (stripDuplicates) { 3590 cl.removeViewInLayout(v); 3591 LauncherModel.deleteItemFromDatabase(mLauncher, si); 3592 } 3593 if (duplicates != null) { 3594 duplicates.add(cn); 3595 } 3596 } 3597 } 3598 if (v instanceof FolderIcon) { 3599 FolderIcon fi = (FolderIcon) v; 3600 ArrayList<View> items = fi.getFolder().getItemsInReadingOrder(); 3601 for (int j = 0; j < items.size(); j++) { 3602 if (items.get(j).getTag() instanceof ShortcutInfo) { 3603 ShortcutInfo si = (ShortcutInfo) items.get(j).getTag(); 3604 ComponentName cn = si.intent.getComponent(); 3605 3606 Uri dataUri = si.intent.getData(); 3607 // If dataUri is not null / empty or if this component isn't one that would 3608 // have previously showed up in the AllApps list, then this is a widget-type 3609 // shortcut, so ignore it. 3610 if (dataUri != null && !dataUri.equals(Uri.EMPTY)) { 3611 continue; 3612 } 3613 3614 if (!uniqueIntents.contains(cn)) { 3615 uniqueIntents.add(cn); 3616 } else { 3617 if (stripDuplicates) { 3618 fi.getFolderInfo().remove(si); 3619 LauncherModel.deleteItemFromDatabase(mLauncher, si); 3620 } 3621 if (duplicates != null) { 3622 duplicates.add(cn); 3623 } 3624 } 3625 } 3626 } 3627 } 3628 } 3629 } 3630 3631 void saveWorkspaceToDb() { 3632 saveWorkspaceScreenToDb((CellLayout) mLauncher.getHotseat().getLayout()); 3633 int count = getChildCount(); 3634 for (int i = 0; i < count; i++) { 3635 CellLayout cl = (CellLayout) getChildAt(i); 3636 saveWorkspaceScreenToDb(cl); 3637 } 3638 } 3639 3640 void saveWorkspaceScreenToDb(CellLayout cl) { 3641 int count = cl.getShortcutsAndWidgets().getChildCount(); 3642 3643 long screenId = getIdForScreen(cl); 3644 int container = Favorites.CONTAINER_DESKTOP; 3645 3646 Hotseat hotseat = mLauncher.getHotseat(); 3647 if (mLauncher.isHotseatLayout(cl)) { 3648 screenId = -1; 3649 container = Favorites.CONTAINER_HOTSEAT; 3650 } 3651 3652 for (int i = 0; i < count; i++) { 3653 View v = cl.getShortcutsAndWidgets().getChildAt(i); 3654 ItemInfo info = (ItemInfo) v.getTag(); 3655 // Null check required as the AllApps button doesn't have an item info 3656 if (info != null) { 3657 int cellX = info.cellX; 3658 int cellY = info.cellY; 3659 if (container == Favorites.CONTAINER_HOTSEAT) { 3660 cellX = hotseat.getCellXFromOrder((int) info.screenId); 3661 cellY = hotseat.getCellYFromOrder((int) info.screenId); 3662 } 3663 LauncherModel.addItemToDatabase(mLauncher, info, container, screenId, cellX, 3664 cellY, false); 3665 } 3666 if (v instanceof FolderIcon) { 3667 FolderIcon fi = (FolderIcon) v; 3668 fi.getFolder().addItemLocationsInDatabase(); 3669 } 3670 } 3671 } 3672 3673 @Override 3674 public boolean supportsFlingToDelete() { 3675 return true; 3676 } 3677 3678 @Override 3679 public void onFlingToDelete(DragObject d, int x, int y, PointF vec) { 3680 // Do nothing 3681 } 3682 3683 @Override 3684 public void onFlingToDeleteCompleted() { 3685 // Do nothing 3686 } 3687 3688 public boolean isDropEnabled() { 3689 return true; 3690 } 3691 3692 @Override 3693 protected void onRestoreInstanceState(Parcelable state) { 3694 super.onRestoreInstanceState(state); 3695 Launcher.setScreen(mCurrentPage); 3696 } 3697 3698 @Override 3699 protected void dispatchRestoreInstanceState(SparseArray<Parcelable> container) { 3700 // We don't dispatch restoreInstanceState to our children using this code path. 3701 // Some pages will be restored immediately as their items are bound immediately, and 3702 // others we will need to wait until after their items are bound. 3703 mSavedStates = container; 3704 } 3705 3706 public void restoreInstanceStateForChild(int child) { 3707 if (mSavedStates != null) { 3708 mRestoredPages.add(child); 3709 CellLayout cl = (CellLayout) getChildAt(child); 3710 cl.restoreInstanceState(mSavedStates); 3711 } 3712 } 3713 3714 public void restoreInstanceStateForRemainingPages() { 3715 int count = getChildCount(); 3716 for (int i = 0; i < count; i++) { 3717 if (!mRestoredPages.contains(i)) { 3718 restoreInstanceStateForChild(i); 3719 } 3720 } 3721 mRestoredPages.clear(); 3722 } 3723 3724 @Override 3725 public void scrollLeft() { 3726 if (!isSmall() && !mIsSwitchingState) { 3727 super.scrollLeft(); 3728 } 3729 Folder openFolder = getOpenFolder(); 3730 if (openFolder != null) { 3731 openFolder.completeDragExit(); 3732 } 3733 } 3734 3735 @Override 3736 public void scrollRight() { 3737 if (!isSmall() && !mIsSwitchingState) { 3738 super.scrollRight(); 3739 } 3740 Folder openFolder = getOpenFolder(); 3741 if (openFolder != null) { 3742 openFolder.completeDragExit(); 3743 } 3744 } 3745 3746 @Override 3747 public boolean onEnterScrollArea(int x, int y, int direction) { 3748 // Ignore the scroll area if we are dragging over the hot seat 3749 boolean isPortrait = !LauncherAppState.isScreenLandscape(getContext()); 3750 if (mLauncher.getHotseat() != null && isPortrait) { 3751 Rect r = new Rect(); 3752 mLauncher.getHotseat().getHitRect(r); 3753 if (r.contains(x, y)) { 3754 return false; 3755 } 3756 } 3757 3758 boolean result = false; 3759 if (!isSmall() && !mIsSwitchingState && getOpenFolder() == null) { 3760 mInScrollArea = true; 3761 3762 final int page = getNextPage() + 3763 (direction == DragController.SCROLL_LEFT ? -1 : 1); 3764 // We always want to exit the current layout to ensure parity of enter / exit 3765 setCurrentDropLayout(null); 3766 3767 if (0 <= page && page < getChildCount()) { 3768 // Ensure that we are not dragging over to the custom content screen 3769 if (getScreenIdForPageIndex(page) == CUSTOM_CONTENT_SCREEN_ID) { 3770 return false; 3771 } 3772 3773 CellLayout layout = (CellLayout) getChildAt(page); 3774 setCurrentDragOverlappingLayout(layout); 3775 3776 // Workspace is responsible for drawing the edge glow on adjacent pages, 3777 // so we need to redraw the workspace when this may have changed. 3778 invalidate(); 3779 result = true; 3780 } 3781 } 3782 return result; 3783 } 3784 3785 @Override 3786 public boolean onExitScrollArea() { 3787 boolean result = false; 3788 if (mInScrollArea) { 3789 invalidate(); 3790 CellLayout layout = getCurrentDropLayout(); 3791 setCurrentDropLayout(layout); 3792 setCurrentDragOverlappingLayout(layout); 3793 3794 result = true; 3795 mInScrollArea = false; 3796 } 3797 return result; 3798 } 3799 3800 private void onResetScrollArea() { 3801 setCurrentDragOverlappingLayout(null); 3802 mInScrollArea = false; 3803 } 3804 3805 /** 3806 * Returns a specific CellLayout 3807 */ 3808 CellLayout getParentCellLayoutForView(View v) { 3809 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3810 for (CellLayout layout : layouts) { 3811 if (layout.getShortcutsAndWidgets().indexOfChild(v) > -1) { 3812 return layout; 3813 } 3814 } 3815 return null; 3816 } 3817 3818 /** 3819 * Returns a list of all the CellLayouts in the workspace. 3820 */ 3821 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3822 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3823 int screenCount = getChildCount(); 3824 for (int screen = 0; screen < screenCount; screen++) { 3825 layouts.add(((CellLayout) getChildAt(screen))); 3826 } 3827 if (mLauncher.getHotseat() != null) { 3828 layouts.add(mLauncher.getHotseat().getLayout()); 3829 } 3830 return layouts; 3831 } 3832 3833 /** 3834 * We should only use this to search for specific children. Do not use this method to modify 3835 * ShortcutsAndWidgetsContainer directly. Includes ShortcutAndWidgetContainers from 3836 * the hotseat and workspace pages 3837 */ 3838 ArrayList<ShortcutAndWidgetContainer> getAllShortcutAndWidgetContainers() { 3839 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3840 new ArrayList<ShortcutAndWidgetContainer>(); 3841 int screenCount = getChildCount(); 3842 for (int screen = 0; screen < screenCount; screen++) { 3843 childrenLayouts.add(((CellLayout) getChildAt(screen)).getShortcutsAndWidgets()); 3844 } 3845 if (mLauncher.getHotseat() != null) { 3846 childrenLayouts.add(mLauncher.getHotseat().getLayout().getShortcutsAndWidgets()); 3847 } 3848 return childrenLayouts; 3849 } 3850 3851 public Folder getFolderForTag(Object tag) { 3852 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3853 getAllShortcutAndWidgetContainers(); 3854 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3855 int count = layout.getChildCount(); 3856 for (int i = 0; i < count; i++) { 3857 View child = layout.getChildAt(i); 3858 if (child instanceof Folder) { 3859 Folder f = (Folder) child; 3860 if (f.getInfo() == tag && f.getInfo().opened) { 3861 return f; 3862 } 3863 } 3864 } 3865 } 3866 return null; 3867 } 3868 3869 public View getViewForTag(Object tag) { 3870 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3871 getAllShortcutAndWidgetContainers(); 3872 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3873 int count = layout.getChildCount(); 3874 for (int i = 0; i < count; i++) { 3875 View child = layout.getChildAt(i); 3876 if (child.getTag() == tag) { 3877 return child; 3878 } 3879 } 3880 } 3881 return null; 3882 } 3883 3884 void clearDropTargets() { 3885 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3886 getAllShortcutAndWidgetContainers(); 3887 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3888 int childCount = layout.getChildCount(); 3889 for (int j = 0; j < childCount; j++) { 3890 View v = layout.getChildAt(j); 3891 if (v instanceof DropTarget) { 3892 mDragController.removeDropTarget((DropTarget) v); 3893 } 3894 } 3895 } 3896 } 3897 3898 // Removes ALL items that match a given package name, this is usually called when a package 3899 // has been removed and we want to remove all components (widgets, shortcuts, apps) that 3900 // belong to that package. 3901 void removeItemsByPackageName(final ArrayList<String> packages) { 3902 final HashSet<String> packageNames = new HashSet<String>(); 3903 packageNames.addAll(packages); 3904 3905 // Filter out all the ItemInfos that this is going to affect 3906 final HashSet<ItemInfo> infos = new HashSet<ItemInfo>(); 3907 final HashSet<ComponentName> cns = new HashSet<ComponentName>(); 3908 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3909 for (CellLayout layoutParent : cellLayouts) { 3910 ViewGroup layout = layoutParent.getShortcutsAndWidgets(); 3911 int childCount = layout.getChildCount(); 3912 for (int i = 0; i < childCount; ++i) { 3913 View view = layout.getChildAt(i); 3914 infos.add((ItemInfo) view.getTag()); 3915 } 3916 } 3917 LauncherModel.ItemInfoFilter filter = new LauncherModel.ItemInfoFilter() { 3918 @Override 3919 public boolean filterItem(ItemInfo parent, ItemInfo info, 3920 ComponentName cn) { 3921 if (packageNames.contains(cn.getPackageName())) { 3922 cns.add(cn); 3923 return true; 3924 } 3925 return false; 3926 } 3927 }; 3928 LauncherModel.filterItemInfos(infos, filter); 3929 3930 // Remove the affected components 3931 removeItemsByComponentName(cns); 3932 } 3933 3934 // Removes items that match the application info specified, when applications are removed 3935 // as a part of an update, this is called to ensure that other widgets and application 3936 // shortcuts are not removed. 3937 void removeItemsByApplicationInfo(final ArrayList<ApplicationInfo> appInfos) { 3938 // Just create a hash table of all the specific components that this will affect 3939 HashSet<ComponentName> cns = new HashSet<ComponentName>(); 3940 for (ApplicationInfo info : appInfos) { 3941 cns.add(info.componentName); 3942 } 3943 3944 // Remove all the things 3945 removeItemsByComponentName(cns); 3946 } 3947 3948 void removeItemsByComponentName(final HashSet<ComponentName> componentNames) { 3949 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3950 for (final CellLayout layoutParent: cellLayouts) { 3951 final ViewGroup layout = layoutParent.getShortcutsAndWidgets(); 3952 3953 final HashMap<ItemInfo, View> children = new HashMap<ItemInfo, View>(); 3954 for (int j = 0; j < layout.getChildCount(); j++) { 3955 final View view = layout.getChildAt(j); 3956 children.put((ItemInfo) view.getTag(), view); 3957 } 3958 3959 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3960 final HashMap<FolderInfo, ArrayList<ShortcutInfo>> folderAppsToRemove = 3961 new HashMap<FolderInfo, ArrayList<ShortcutInfo>>(); 3962 LauncherModel.ItemInfoFilter filter = new LauncherModel.ItemInfoFilter() { 3963 @Override 3964 public boolean filterItem(ItemInfo parent, ItemInfo info, 3965 ComponentName cn) { 3966 if (parent instanceof FolderInfo) { 3967 if (componentNames.contains(cn)) { 3968 FolderInfo folder = (FolderInfo) parent; 3969 ArrayList<ShortcutInfo> appsToRemove; 3970 if (folderAppsToRemove.containsKey(folder)) { 3971 appsToRemove = folderAppsToRemove.get(folder); 3972 } else { 3973 appsToRemove = new ArrayList<ShortcutInfo>(); 3974 folderAppsToRemove.put(folder, appsToRemove); 3975 } 3976 appsToRemove.add((ShortcutInfo) info); 3977 return true; 3978 } 3979 } else { 3980 if (componentNames.contains(cn)) { 3981 childrenToRemove.add(children.get(info)); 3982 return true; 3983 } 3984 } 3985 return false; 3986 } 3987 }; 3988 LauncherModel.filterItemInfos(children.keySet(), filter); 3989 3990 // Remove all the apps from their folders 3991 for (FolderInfo folder : folderAppsToRemove.keySet()) { 3992 ArrayList<ShortcutInfo> appsToRemove = folderAppsToRemove.get(folder); 3993 for (ShortcutInfo info : appsToRemove) { 3994 folder.remove(info); 3995 } 3996 } 3997 3998 // Remove all the other children 3999 for (View child : childrenToRemove) { 4000 // Note: We can not remove the view directly from CellLayoutChildren as this 4001 // does not re-mark the spaces as unoccupied. 4002 layoutParent.removeViewInLayout(child); 4003 if (child instanceof DropTarget) { 4004 mDragController.removeDropTarget((DropTarget) child); 4005 } 4006 } 4007 4008 if (childrenToRemove.size() > 0) { 4009 layout.requestLayout(); 4010 layout.invalidate(); 4011 } 4012 } 4013 4014 // Strip all the empty screens 4015 stripEmptyScreens(); 4016 } 4017 4018 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 4019 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = getAllShortcutAndWidgetContainers(); 4020 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 4021 int childCount = layout.getChildCount(); 4022 for (int j = 0; j < childCount; j++) { 4023 final View view = layout.getChildAt(j); 4024 Object tag = view.getTag(); 4025 4026 if (LauncherModel.isShortcutInfoUpdateable((ItemInfo) tag)) { 4027 ShortcutInfo info = (ShortcutInfo) tag; 4028 4029 final Intent intent = info.intent; 4030 final ComponentName name = intent.getComponent(); 4031 final int appCount = apps.size(); 4032 for (int k = 0; k < appCount; k++) { 4033 ApplicationInfo app = apps.get(k); 4034 if (app.componentName.equals(name)) { 4035 BubbleTextView shortcut = (BubbleTextView) view; 4036 info.updateIcon(mIconCache); 4037 info.title = app.title.toString(); 4038 shortcut.applyFromShortcutInfo(info, mIconCache); 4039 } 4040 } 4041 } 4042 } 4043 } 4044 } 4045 4046 void moveToDefaultScreen(boolean animate) { 4047 if (!isSmall()) { 4048 if (animate) { 4049 snapToPage(mDefaultPage); 4050 } else { 4051 setCurrentPage(mDefaultPage); 4052 } 4053 } 4054 View child = getChildAt(mDefaultPage); 4055 if (child != null) { 4056 child.requestFocus(); 4057 } 4058 } 4059 4060 @Override 4061 protected int getPageIndicatorMarker(int pageIndex) { 4062 if (getScreenIdForPageIndex(pageIndex) == CUSTOM_CONTENT_SCREEN_ID) { 4063 return R.layout.custom_content_page_indicator_marker; 4064 } 4065 return super.getPageIndicatorMarker(pageIndex); 4066 } 4067 4068 @Override 4069 public void syncPages() { 4070 } 4071 4072 @Override 4073 public void syncPageItems(int page, boolean immediate) { 4074 } 4075 4076 protected String getCurrentPageDescription() { 4077 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 4078 return String.format(getContext().getString(R.string.workspace_scroll_format), 4079 page + 1, getChildCount()); 4080 } 4081 4082 public void getLocationInDragLayer(int[] loc) { 4083 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 4084 } 4085} 4086