Workspace.java revision 55f57c49cf333a6015befe38131ef8a78a091171
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.launcher2; 18 19import android.animation.Animator; 20import android.animation.Animator.AnimatorListener; 21import android.animation.AnimatorListenerAdapter; 22import android.animation.AnimatorSet; 23import android.animation.ObjectAnimator; 24import android.animation.TimeInterpolator; 25import android.animation.ValueAnimator; 26import android.animation.ValueAnimator.AnimatorUpdateListener; 27import android.app.AlertDialog; 28import android.app.WallpaperManager; 29import android.appwidget.AppWidgetManager; 30import android.appwidget.AppWidgetProviderInfo; 31import android.content.ClipData; 32import android.content.ClipDescription; 33import android.content.ComponentName; 34import android.content.Context; 35import android.content.Intent; 36import android.content.res.Resources; 37import android.content.res.TypedArray; 38import android.graphics.Bitmap; 39import android.graphics.Camera; 40import android.graphics.Canvas; 41import android.graphics.Matrix; 42import android.graphics.Paint; 43import android.graphics.Point; 44import android.graphics.PorterDuff; 45import android.graphics.Rect; 46import android.graphics.RectF; 47import android.graphics.Region.Op; 48import android.graphics.drawable.Drawable; 49import android.os.IBinder; 50import android.os.Parcelable; 51import android.util.AttributeSet; 52import android.util.DisplayMetrics; 53import android.util.Log; 54import android.util.Pair; 55import android.view.Display; 56import android.view.DragEvent; 57import android.view.MotionEvent; 58import android.view.View; 59import android.view.ViewGroup; 60import android.view.animation.DecelerateInterpolator; 61import android.widget.ImageView; 62import android.widget.TextView; 63import android.widget.Toast; 64 65import com.android.launcher.R; 66import com.android.launcher2.FolderIcon.FolderRingAnimator; 67import com.android.launcher2.InstallWidgetReceiver.WidgetMimeTypeHandlerData; 68 69import java.util.ArrayList; 70import java.util.HashSet; 71import java.util.List; 72 73/** 74 * The workspace is a wide area with a wallpaper and a finite number of pages. 75 * Each page contains a number of icons, folders or widgets the user can 76 * interact with. A workspace is meant to be used with a fixed width only. 77 */ 78public class Workspace extends SmoothPagedView 79 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 80 DragController.DragListener { 81 @SuppressWarnings({"UnusedDeclaration"}) 82 private static final String TAG = "Launcher.Workspace"; 83 84 // Y rotation to apply to the workspace screens 85 private static final float WORKSPACE_ROTATION = 12.5f; 86 private static final float WORKSPACE_OVERSCROLL_ROTATION = 24f; 87 private static float CAMERA_DISTANCE = 6500; 88 89 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 90 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 91 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 92 93 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 94 private static final int ADJACENT_SCREEN_DROP_DURATION = 300; 95 96 // These animators are used to fade the children's outlines 97 private ObjectAnimator mChildrenOutlineFadeInAnimation; 98 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 99 private float mChildrenOutlineAlpha = 0; 100 101 // These properties refer to the background protection gradient used for AllApps and Customize 102 private ValueAnimator mBackgroundFadeInAnimation; 103 private ValueAnimator mBackgroundFadeOutAnimation; 104 private Drawable mBackground; 105 boolean mDrawBackground = true; 106 private float mBackgroundAlpha = 0; 107 private float mOverScrollMaxBackgroundAlpha = 0.0f; 108 private int mOverScrollPageIndex = -1; 109 private AnimatorSet mDividerAnimator; 110 111 private float mWallpaperScrollRatio = 1.0f; 112 113 private final WallpaperManager mWallpaperManager; 114 private IBinder mWindowToken; 115 private static final float WALLPAPER_SCREENS_SPAN = 2f; 116 117 private int mDefaultPage; 118 119 /** 120 * CellInfo for the cell that is currently being dragged 121 */ 122 private CellLayout.CellInfo mDragInfo; 123 124 /** 125 * Target drop area calculated during last acceptDrop call. 126 */ 127 private int[] mTargetCell = new int[2]; 128 129 /** 130 * The CellLayout that is currently being dragged over 131 */ 132 private CellLayout mDragTargetLayout = null; 133 134 private Launcher mLauncher; 135 private IconCache mIconCache; 136 private DragController mDragController; 137 138 // These are temporary variables to prevent having to allocate a new object just to 139 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 140 private int[] mTempCell = new int[2]; 141 private int[] mTempEstimate = new int[2]; 142 private float[] mDragViewVisualCenter = new float[2]; 143 private float[] mTempDragCoordinates = new float[2]; 144 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 145 private float[] mTempDragBottomRightCoordinates = new float[2]; 146 private Matrix mTempInverseMatrix = new Matrix(); 147 148 private SpringLoadedDragController mSpringLoadedDragController; 149 private float mSpringLoadedShrinkFactor; 150 151 private static final int DEFAULT_CELL_COUNT_X = 4; 152 private static final int DEFAULT_CELL_COUNT_Y = 4; 153 154 // State variable that indicates whether the pages are small (ie when you're 155 // in all apps or customize mode) 156 157 enum State { NORMAL, SPRING_LOADED, SMALL }; 158 private State mState = State.NORMAL; 159 private boolean mIsSwitchingState = false; 160 private boolean mSwitchStateAfterFirstLayout = false; 161 private State mStateAfterFirstLayout; 162 163 private AnimatorSet mAnimator; 164 private AnimatorListener mChangeStateAnimationListener; 165 166 boolean mAnimatingViewIntoPlace = false; 167 boolean mIsDragOccuring = false; 168 boolean mChildrenLayersEnabled = true; 169 170 /** Is the user is dragging an item near the edge of a page? */ 171 private boolean mInScrollArea = false; 172 173 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 174 private Bitmap mDragOutline = null; 175 private final Rect mTempRect = new Rect(); 176 private final int[] mTempXY = new int[2]; 177 private int mDragViewMultiplyColor; 178 179 // Paint used to draw external drop outline 180 private final Paint mExternalDragOutlinePaint = new Paint(); 181 182 // Camera and Matrix used to determine the final position of a neighboring CellLayout 183 private final Matrix mMatrix = new Matrix(); 184 private final Camera mCamera = new Camera(); 185 private final float mTempFloat2[] = new float[2]; 186 187 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 188 int mWallpaperWidth; 189 int mWallpaperHeight; 190 WallpaperOffsetInterpolator mWallpaperOffset; 191 boolean mUpdateWallpaperOffsetImmediately = false; 192 private Runnable mDelayedResizeRunnable; 193 private int mDisplayWidth; 194 private int mDisplayHeight; 195 private int mWallpaperTravelWidth; 196 197 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 198 private static final int FOLDER_CREATION_TIMEOUT = 250; 199 private final Alarm mFolderCreationAlarm = new Alarm(); 200 private FolderRingAnimator mDragFolderRingAnimator = null; 201 private View mLastDragOverView = null; 202 private boolean mCreateUserFolderOnDrop = false; 203 204 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 205 private float mXDown; 206 private float mYDown; 207 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 208 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 209 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 210 211 // These variables are used for storing the initial and final values during workspace animations 212 private int mSavedScrollX; 213 private float mSavedRotationY; 214 private float mSavedTranslationX; 215 private float mCurrentScaleX; 216 private float mCurrentScaleY; 217 private float mCurrentRotationY; 218 private float mCurrentTranslationX; 219 private float mCurrentTranslationY; 220 private float[] mOldTranslationXs; 221 private float[] mOldTranslationYs; 222 private float[] mOldScaleXs; 223 private float[] mOldScaleYs; 224 private float[] mOldBackgroundAlphas; 225 private float[] mOldBackgroundAlphaMultipliers; 226 private float[] mOldAlphas; 227 private float[] mOldRotationYs; 228 private float[] mNewTranslationXs; 229 private float[] mNewTranslationYs; 230 private float[] mNewScaleXs; 231 private float[] mNewScaleYs; 232 private float[] mNewBackgroundAlphas; 233 private float[] mNewBackgroundAlphaMultipliers; 234 private float[] mNewAlphas; 235 private float[] mNewRotationYs; 236 private float mTransitionProgress; 237 238 /** 239 * Used to inflate the Workspace from XML. 240 * 241 * @param context The application's context. 242 * @param attrs The attributes set containing the Workspace's customization values. 243 */ 244 public Workspace(Context context, AttributeSet attrs) { 245 this(context, attrs, 0); 246 } 247 248 /** 249 * Used to inflate the Workspace from XML. 250 * 251 * @param context The application's context. 252 * @param attrs The attributes set containing the Workspace's customization values. 253 * @param defStyle Unused. 254 */ 255 public Workspace(Context context, AttributeSet attrs, int defStyle) { 256 super(context, attrs, defStyle); 257 mContentIsRefreshable = false; 258 259 // With workspace, data is available straight from the get-go 260 setDataIsReady(); 261 262 mFadeInAdjacentScreens = 263 getResources().getBoolean(R.bool.config_workspaceFadeAdjacentScreens); 264 mWallpaperManager = WallpaperManager.getInstance(context); 265 266 int cellCountX = DEFAULT_CELL_COUNT_X; 267 int cellCountY = DEFAULT_CELL_COUNT_Y; 268 269 TypedArray a = context.obtainStyledAttributes(attrs, 270 R.styleable.Workspace, defStyle, 0); 271 272 final Resources res = context.getResources(); 273 if (LauncherApplication.isScreenLarge()) { 274 // Determine number of rows/columns dynamically 275 // TODO: This code currently fails on tablets with an aspect ratio < 1.3. 276 // Around that ratio we should make cells the same size in portrait and 277 // landscape 278 TypedArray actionBarSizeTypedArray = 279 context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize }); 280 final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); 281 final float systemBarHeight = res.getDimension(R.dimen.status_bar_height); 282 final float smallestScreenDim = res.getConfiguration().smallestScreenWidthDp; 283 284 cellCountX = 1; 285 while (CellLayout.widthInPortrait(res, cellCountX + 1) <= smallestScreenDim) { 286 cellCountX++; 287 } 288 289 cellCountY = 1; 290 while (actionBarHeight + CellLayout.heightInLandscape(res, cellCountY + 1) 291 <= smallestScreenDim - systemBarHeight) { 292 cellCountY++; 293 } 294 } 295 296 mSpringLoadedShrinkFactor = 297 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 298 mDragViewMultiplyColor = res.getColor(R.color.drag_view_multiply_color); 299 300 // if the value is manually specified, use that instead 301 cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX); 302 cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY); 303 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 304 a.recycle(); 305 306 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 307 setHapticFeedbackEnabled(false); 308 309 mLauncher = (Launcher) context; 310 initWorkspace(); 311 312 // Disable multitouch across the workspace/all apps/customize tray 313 setMotionEventSplittingEnabled(true); 314 } 315 316 public void buildPageHardwareLayers() { 317 if (getWindowToken() != null) { 318 final int childCount = getChildCount(); 319 for (int i = 0; i < childCount; i++) { 320 CellLayout cl = (CellLayout) getChildAt(i); 321 cl.buildChildrenLayer(); 322 } 323 } 324 } 325 326 public void onDragStart(DragSource source, Object info, int dragAction) { 327 mIsDragOccuring = true; 328 updateChildrenLayersEnabled(); 329 mLauncher.lockScreenOrientationOnLargeUI(); 330 } 331 332 public void onDragEnd() { 333 mIsDragOccuring = false; 334 updateChildrenLayersEnabled(); 335 mLauncher.unlockScreenOrientationOnLargeUI(); 336 } 337 338 /** 339 * Initializes various states for this workspace. 340 */ 341 protected void initWorkspace() { 342 Context context = getContext(); 343 mCurrentPage = mDefaultPage; 344 Launcher.setScreen(mCurrentPage); 345 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 346 mIconCache = app.getIconCache(); 347 mExternalDragOutlinePaint.setAntiAlias(true); 348 setWillNotDraw(false); 349 setChildrenDrawnWithCacheEnabled(true); 350 351 try { 352 final Resources res = getResources(); 353 mBackground = res.getDrawable(R.drawable.apps_customize_bg); 354 } catch (Resources.NotFoundException e) { 355 // In this case, we will skip drawing background protection 356 } 357 358 mChangeStateAnimationListener = new AnimatorListenerAdapter() { 359 @Override 360 public void onAnimationStart(Animator animation) { 361 mIsSwitchingState = true; 362 } 363 364 @Override 365 public void onAnimationEnd(Animator animation) { 366 mIsSwitchingState = false; 367 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 368 mAnimator = null; 369 updateChildrenLayersEnabled(); 370 } 371 }; 372 373 mSnapVelocity = 600; 374 mWallpaperOffset = new WallpaperOffsetInterpolator(); 375 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 376 mDisplayWidth = display.getWidth(); 377 mDisplayHeight = display.getHeight(); 378 mWallpaperTravelWidth = (int) (mDisplayWidth * 379 wallpaperTravelToScreenWidthRatio(mDisplayWidth, mDisplayHeight)); 380 } 381 382 @Override 383 protected int getScrollMode() { 384 return SmoothPagedView.X_LARGE_MODE; 385 } 386 387 @Override 388 protected void onViewAdded(View child) { 389 super.onViewAdded(child); 390 if (!(child instanceof CellLayout)) { 391 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 392 } 393 CellLayout cl = ((CellLayout) child); 394 cl.setOnInterceptTouchListener(this); 395 cl.setClickable(true); 396 cl.enableHardwareLayers(); 397 } 398 399 /** 400 * @return The open folder on the current screen, or null if there is none 401 */ 402 Folder getOpenFolder() { 403 DragLayer dragLayer = mLauncher.getDragLayer(); 404 int count = dragLayer.getChildCount(); 405 for (int i = 0; i < count; i++) { 406 View child = dragLayer.getChildAt(i); 407 if (child instanceof Folder) { 408 Folder folder = (Folder) child; 409 if (folder.getInfo().opened) 410 return folder; 411 } 412 } 413 return null; 414 } 415 416 boolean isTouchActive() { 417 return mTouchState != TOUCH_STATE_REST; 418 } 419 420 /** 421 * Adds the specified child in the specified screen. The position and dimension of 422 * the child are defined by x, y, spanX and spanY. 423 * 424 * @param child The child to add in one of the workspace's screens. 425 * @param screen The screen in which to add the child. 426 * @param x The X position of the child in the screen's grid. 427 * @param y The Y position of the child in the screen's grid. 428 * @param spanX The number of cells spanned horizontally by the child. 429 * @param spanY The number of cells spanned vertically by the child. 430 */ 431 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY) { 432 addInScreen(child, container, screen, x, y, spanX, spanY, false); 433 } 434 435 /** 436 * Adds the specified child in the specified screen. The position and dimension of 437 * the child are defined by x, y, spanX and spanY. 438 * 439 * @param child The child to add in one of the workspace's screens. 440 * @param screen The screen in which to add the child. 441 * @param x The X position of the child in the screen's grid. 442 * @param y The Y position of the child in the screen's grid. 443 * @param spanX The number of cells spanned horizontally by the child. 444 * @param spanY The number of cells spanned vertically by the child. 445 * @param insert When true, the child is inserted at the beginning of the children list. 446 */ 447 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY, 448 boolean insert) { 449 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 450 if (screen < 0 || screen >= getChildCount()) { 451 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 452 + " (was " + screen + "); skipping child"); 453 return; 454 } 455 } 456 457 final CellLayout layout; 458 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 459 layout = mLauncher.getHotseat().getLayout(); 460 child.setOnKeyListener(null); 461 462 // Hide folder title in the hotseat 463 if (child instanceof FolderIcon) { 464 ((FolderIcon) child).setTextVisible(false); 465 } 466 467 if (screen < 0) { 468 screen = mLauncher.getHotseat().getOrderInHotseat(x, y); 469 } else { 470 // Note: We do this to ensure that the hotseat is always laid out in the orientation 471 // of the hotseat in order regardless of which orientation they were added 472 x = mLauncher.getHotseat().getCellXFromOrder(screen); 473 y = mLauncher.getHotseat().getCellYFromOrder(screen); 474 } 475 } else { 476 // Show folder title if not in the hotseat 477 if (child instanceof FolderIcon) { 478 ((FolderIcon) child).setTextVisible(true); 479 } 480 481 layout = (CellLayout) getChildAt(screen); 482 child.setOnKeyListener(new IconKeyEventListener()); 483 } 484 485 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 486 if (lp == null) { 487 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 488 } else { 489 lp.cellX = x; 490 lp.cellY = y; 491 lp.cellHSpan = spanX; 492 lp.cellVSpan = spanY; 493 } 494 495 if (spanX < 0 && spanY < 0) { 496 lp.isLockedToGrid = false; 497 } 498 499 // Get the canonical child id to uniquely represent this view in this screen 500 int childId = LauncherModel.getCellLayoutChildId(container, screen, x, y, spanX, spanY); 501 boolean markCellsAsOccupied = !(child instanceof Folder); 502 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 503 // TODO: This branch occurs when the workspace is adding views 504 // outside of the defined grid 505 // maybe we should be deleting these items from the LauncherModel? 506 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 507 } 508 509 if (!(child instanceof Folder)) { 510 child.setHapticFeedbackEnabled(false); 511 child.setOnLongClickListener(mLongClickListener); 512 } 513 if (child instanceof DropTarget) { 514 mDragController.addDropTarget((DropTarget) child); 515 } 516 } 517 518 /** 519 * Check if the point (x, y) hits a given page. 520 */ 521 private boolean hitsPage(int index, float x, float y) { 522 final View page = getChildAt(index); 523 if (page != null) { 524 float[] localXY = { x, y }; 525 mapPointFromSelfToChild(page, localXY); 526 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 527 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 528 } 529 return false; 530 } 531 532 @Override 533 protected boolean hitsPreviousPage(float x, float y) { 534 // mNextPage is set to INVALID_PAGE whenever we are stationary. 535 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 536 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 537 538 // Only allow tap to next page on large devices, where there's significant margin outside 539 // the active workspace 540 return LauncherApplication.isScreenLarge() && hitsPage(current - 1, x, y); 541 } 542 543 @Override 544 protected boolean hitsNextPage(float x, float y) { 545 // mNextPage is set to INVALID_PAGE whenever we are stationary. 546 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 547 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 548 549 // Only allow tap to next page on large devices, where there's significant margin outside 550 // the active workspace 551 return LauncherApplication.isScreenLarge() && hitsPage(current + 1, x, y); 552 } 553 554 /** 555 * Called directly from a CellLayout (not by the framework), after we've been added as a 556 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 557 * that it should intercept touch events, which is not something that is normally supported. 558 */ 559 @Override 560 public boolean onTouch(View v, MotionEvent event) { 561 return (isSmall() || mIsSwitchingState); 562 } 563 564 public boolean isSwitchingState() { 565 return mIsSwitchingState; 566 } 567 568 protected void onWindowVisibilityChanged (int visibility) { 569 mLauncher.onWindowVisibilityChanged(visibility); 570 } 571 572 @Override 573 public boolean dispatchUnhandledMove(View focused, int direction) { 574 if (isSmall() || mIsSwitchingState) { 575 // when the home screens are shrunken, shouldn't allow side-scrolling 576 return false; 577 } 578 return super.dispatchUnhandledMove(focused, direction); 579 } 580 581 @Override 582 public boolean onInterceptTouchEvent(MotionEvent ev) { 583 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 584 case MotionEvent.ACTION_DOWN: 585 mXDown = ev.getX(); 586 mYDown = ev.getY(); 587 break; 588 case MotionEvent.ACTION_POINTER_UP: 589 case MotionEvent.ACTION_UP: 590 if (mTouchState == TOUCH_STATE_REST) { 591 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 592 if (!currentPage.lastDownOnOccupiedCell()) { 593 onWallpaperTap(ev); 594 } 595 } 596 } 597 return super.onInterceptTouchEvent(ev); 598 } 599 600 @Override 601 protected void determineScrollingStart(MotionEvent ev) { 602 if (!isSmall() && !mIsSwitchingState) { 603 float deltaX = Math.abs(ev.getX() - mXDown); 604 float deltaY = Math.abs(ev.getY() - mYDown); 605 606 if (Float.compare(deltaX, 0f) == 0) return; 607 608 float slope = deltaY / deltaX; 609 float theta = (float) Math.atan(slope); 610 611 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 612 cancelCurrentPageLongPress(); 613 } 614 615 if (theta > MAX_SWIPE_ANGLE) { 616 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 617 return; 618 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 619 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 620 // increase the touch slop to make it harder to begin scrolling the workspace. This 621 // results in vertically scrolling widgets to more easily. The higher the angle, the 622 // more we increase touch slop. 623 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 624 float extraRatio = (float) 625 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 626 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 627 } else { 628 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 629 super.determineScrollingStart(ev); 630 } 631 } 632 } 633 634 @Override 635 protected boolean isScrollingIndicatorEnabled() { 636 return mState != State.SPRING_LOADED; 637 } 638 639 protected void onPageBeginMoving() { 640 super.onPageBeginMoving(); 641 642 if (isHardwareAccelerated()) { 643 updateChildrenLayersEnabled(); 644 } else { 645 if (mNextPage != INVALID_PAGE) { 646 // we're snapping to a particular screen 647 enableChildrenCache(mCurrentPage, mNextPage); 648 } else { 649 // this is when user is actively dragging a particular screen, they might 650 // swipe it either left or right (but we won't advance by more than one screen) 651 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 652 } 653 } 654 655 // Only show page outlines as we pan if we are on large screen 656 if (LauncherApplication.isScreenLarge()) { 657 showOutlines(); 658 } 659 } 660 661 protected void onPageEndMoving() { 662 super.onPageEndMoving(); 663 664 if (isHardwareAccelerated()) { 665 updateChildrenLayersEnabled(); 666 } else { 667 clearChildrenCache(); 668 } 669 670 // Hide the outlines, as long as we're not dragging 671 if (!mDragController.dragging()) { 672 // Only hide page outlines as we pan if we are on large screen 673 if (LauncherApplication.isScreenLarge()) { 674 hideOutlines(); 675 } 676 } 677 mOverScrollMaxBackgroundAlpha = 0.0f; 678 mOverScrollPageIndex = -1; 679 680 if (mDelayedResizeRunnable != null) { 681 mDelayedResizeRunnable.run(); 682 mDelayedResizeRunnable = null; 683 } 684 } 685 686 @Override 687 protected void notifyPageSwitchListener() { 688 super.notifyPageSwitchListener(); 689 Launcher.setScreen(mCurrentPage); 690 }; 691 692 // As a ratio of screen height, the total distance we want the parallax effect to span 693 // horizontally 694 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 695 float aspectRatio = width / (float) height; 696 697 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 698 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 699 // We will use these two data points to extrapolate how much the wallpaper parallax effect 700 // to span (ie travel) at any aspect ratio: 701 702 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 703 final float ASPECT_RATIO_PORTRAIT = 10/16f; 704 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 705 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 706 707 // To find out the desired width at different aspect ratios, we use the following two 708 // formulas, where the coefficient on x is the aspect ratio (width/height): 709 // (16/10)x + y = 1.5 710 // (10/16)x + y = 1.2 711 // We solve for x and y and end up with a final formula: 712 final float x = 713 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 714 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 715 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 716 return x * aspectRatio + y; 717 } 718 719 // The range of scroll values for Workspace 720 private int getScrollRange() { 721 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 722 } 723 724 protected void setWallpaperDimension() { 725 DisplayMetrics displayMetrics = new DisplayMetrics(); 726 mLauncher.getWindowManager().getDefaultDisplay().getRealMetrics(displayMetrics); 727 final int maxDim = Math.max(displayMetrics.widthPixels, displayMetrics.heightPixels); 728 final int minDim = Math.min(displayMetrics.widthPixels, displayMetrics.heightPixels); 729 730 // We need to ensure that there is enough extra space in the wallpaper for the intended 731 // parallax effects 732 if (LauncherApplication.isScreenLarge()) { 733 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 734 mWallpaperHeight = maxDim; 735 } else { 736 mWallpaperWidth = Math.max((int) (minDim * WALLPAPER_SCREENS_SPAN), maxDim); 737 mWallpaperHeight = maxDim; 738 } 739 new Thread("setWallpaperDimension") { 740 public void run() { 741 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 742 } 743 }.start(); 744 } 745 746 public void setVerticalWallpaperOffset(float offset) { 747 mWallpaperOffset.setFinalY(offset); 748 } 749 public float getVerticalWallpaperOffset() { 750 return mWallpaperOffset.getCurrY(); 751 } 752 public void setHorizontalWallpaperOffset(float offset) { 753 mWallpaperOffset.setFinalX(offset); 754 } 755 public float getHorizontalWallpaperOffset() { 756 return mWallpaperOffset.getCurrX(); 757 } 758 759 private float wallpaperOffsetForCurrentScroll() { 760 // The wallpaper travel width is how far, from left to right, the wallpaper will move 761 // at this orientation. On tablets in portrait mode we don't move all the way to the 762 // edges of the wallpaper, or otherwise the parallax effect would be too strong. 763 int wallpaperTravelWidth = mWallpaperWidth; 764 if (LauncherApplication.isScreenLarge()) { 765 wallpaperTravelWidth = mWallpaperTravelWidth; 766 } 767 768 // Set wallpaper offset steps (1 / (number of screens - 1)) 769 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f); 770 771 // For the purposes of computing the scrollRange and overScrollOffset, we assume 772 // that mLayoutScale is 1. This means that when we're in spring-loaded mode, 773 // there's no discrepancy between the wallpaper offset for a given page. 774 float layoutScale = mLayoutScale; 775 mLayoutScale = 1f; 776 int scrollRange = getScrollRange(); 777 778 // Again, we adjust the wallpaper offset to be consistent between values of mLayoutScale 779 float adjustedScrollX = Math.max(0, Math.min(mScrollX, mMaxScrollX)); 780 adjustedScrollX *= mWallpaperScrollRatio; 781 mLayoutScale = layoutScale; 782 783 float scrollProgress = 784 adjustedScrollX / (float) scrollRange; 785 float offsetInDips = wallpaperTravelWidth * scrollProgress + 786 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 787 float offset = offsetInDips / (float) mWallpaperWidth; 788 return offset; 789 } 790 private void syncWallpaperOffsetWithScroll() { 791 final boolean enableWallpaperEffects = isHardwareAccelerated(); 792 if (enableWallpaperEffects) { 793 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 794 } 795 } 796 797 public void updateWallpaperOffsetImmediately() { 798 mUpdateWallpaperOffsetImmediately = true; 799 } 800 801 private void updateWallpaperOffsets() { 802 boolean updateNow = false; 803 boolean keepUpdating = true; 804 if (mUpdateWallpaperOffsetImmediately) { 805 updateNow = true; 806 keepUpdating = false; 807 mWallpaperOffset.jumpToFinal(); 808 mUpdateWallpaperOffsetImmediately = false; 809 } else { 810 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 811 } 812 if (updateNow) { 813 if (mWindowToken != null) { 814 mWallpaperManager.setWallpaperOffsets(mWindowToken, 815 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 816 } 817 } 818 if (keepUpdating) { 819 fastInvalidate(); 820 } 821 } 822 823 @Override 824 protected void updateCurrentPageScroll() { 825 super.updateCurrentPageScroll(); 826 computeWallpaperScrollRatio(mCurrentPage); 827 } 828 829 @Override 830 protected void snapToPage(int whichPage) { 831 super.snapToPage(whichPage); 832 computeWallpaperScrollRatio(whichPage); 833 } 834 835 private void computeWallpaperScrollRatio(int page) { 836 // Here, we determine what the desired scroll would be with and without a layout scale, 837 // and compute a ratio between the two. This allows us to adjust the wallpaper offset 838 // as though there is no layout scale. 839 float layoutScale = mLayoutScale; 840 int scaled = getChildOffset(page) - getRelativeChildOffset(page); 841 mLayoutScale = 1.0f; 842 float unscaled = getChildOffset(page) - getRelativeChildOffset(page); 843 mLayoutScale = layoutScale; 844 if (scaled > 0) { 845 mWallpaperScrollRatio = (1.0f * unscaled) / scaled; 846 } else { 847 mWallpaperScrollRatio = 1f; 848 } 849 } 850 851 class WallpaperOffsetInterpolator { 852 float mFinalHorizontalWallpaperOffset = 0.0f; 853 float mFinalVerticalWallpaperOffset = 0.5f; 854 float mHorizontalWallpaperOffset = 0.0f; 855 float mVerticalWallpaperOffset = 0.5f; 856 long mLastWallpaperOffsetUpdateTime; 857 boolean mIsMovingFast; 858 boolean mOverrideHorizontalCatchupConstant; 859 float mHorizontalCatchupConstant = 0.35f; 860 float mVerticalCatchupConstant = 0.35f; 861 862 public WallpaperOffsetInterpolator() { 863 } 864 865 public void setOverrideHorizontalCatchupConstant(boolean override) { 866 mOverrideHorizontalCatchupConstant = override; 867 } 868 869 public void setHorizontalCatchupConstant(float f) { 870 mHorizontalCatchupConstant = f; 871 } 872 873 public void setVerticalCatchupConstant(float f) { 874 mVerticalCatchupConstant = f; 875 } 876 877 public boolean computeScrollOffset() { 878 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 879 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 880 mIsMovingFast = false; 881 return false; 882 } 883 boolean isLandscape = mDisplayWidth > mDisplayHeight; 884 885 long currentTime = System.currentTimeMillis(); 886 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 887 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 888 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 889 890 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 891 if (!mIsMovingFast && xdiff > 0.07) { 892 mIsMovingFast = true; 893 } 894 895 float fractionToCatchUpIn1MsHorizontal; 896 if (mOverrideHorizontalCatchupConstant) { 897 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 898 } else if (mIsMovingFast) { 899 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 900 } else { 901 // slow 902 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 903 } 904 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 905 906 fractionToCatchUpIn1MsHorizontal /= 33f; 907 fractionToCatchUpIn1MsVertical /= 33f; 908 909 final float UPDATE_THRESHOLD = 0.00001f; 910 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 911 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 912 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 913 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 914 915 // Don't have any lag between workspace and wallpaper on non-large devices 916 if (!LauncherApplication.isScreenLarge() || jumpToFinalValue) { 917 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 918 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 919 } else { 920 float percentToCatchUpVertical = 921 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 922 float percentToCatchUpHorizontal = 923 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 924 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 925 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 926 } 927 928 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 929 return true; 930 } 931 932 public float getCurrX() { 933 return mHorizontalWallpaperOffset; 934 } 935 936 public float getFinalX() { 937 return mFinalHorizontalWallpaperOffset; 938 } 939 940 public float getCurrY() { 941 return mVerticalWallpaperOffset; 942 } 943 944 public float getFinalY() { 945 return mFinalVerticalWallpaperOffset; 946 } 947 948 public void setFinalX(float x) { 949 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 950 } 951 952 public void setFinalY(float y) { 953 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 954 } 955 956 public void jumpToFinal() { 957 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 958 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 959 } 960 } 961 962 @Override 963 public void computeScroll() { 964 super.computeScroll(); 965 syncWallpaperOffsetWithScroll(); 966 } 967 968 void showOutlines() { 969 if (!isSmall() && !mIsSwitchingState) { 970 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 971 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 972 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 973 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 974 mChildrenOutlineFadeInAnimation.start(); 975 } 976 } 977 978 void hideOutlines() { 979 if (!isSmall() && !mIsSwitchingState) { 980 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 981 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 982 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 983 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 984 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 985 mChildrenOutlineFadeOutAnimation.start(); 986 } 987 } 988 989 public void showOutlinesTemporarily() { 990 if (!mIsPageMoving && !isTouchActive()) { 991 snapToPage(mCurrentPage); 992 } 993 } 994 995 public void setChildrenOutlineAlpha(float alpha) { 996 mChildrenOutlineAlpha = alpha; 997 for (int i = 0; i < getChildCount(); i++) { 998 CellLayout cl = (CellLayout) getChildAt(i); 999 cl.setBackgroundAlpha(alpha); 1000 } 1001 } 1002 1003 public float getChildrenOutlineAlpha() { 1004 return mChildrenOutlineAlpha; 1005 } 1006 1007 void disableBackground() { 1008 mDrawBackground = false; 1009 } 1010 void enableBackground() { 1011 mDrawBackground = true; 1012 } 1013 1014 private void animateBackgroundGradient(float finalAlpha, boolean animated) { 1015 if (mBackground == null) return; 1016 if (mBackgroundFadeInAnimation != null) { 1017 mBackgroundFadeInAnimation.cancel(); 1018 mBackgroundFadeInAnimation = null; 1019 } 1020 if (mBackgroundFadeOutAnimation != null) { 1021 mBackgroundFadeOutAnimation.cancel(); 1022 mBackgroundFadeOutAnimation = null; 1023 } 1024 float startAlpha = getBackgroundAlpha(); 1025 if (finalAlpha != startAlpha) { 1026 if (animated) { 1027 mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(startAlpha, finalAlpha); 1028 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1029 public void onAnimationUpdate(ValueAnimator animation) { 1030 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1031 } 1032 }); 1033 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1034 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1035 mBackgroundFadeOutAnimation.start(); 1036 } else { 1037 setBackgroundAlpha(finalAlpha); 1038 } 1039 } 1040 } 1041 1042 public void setBackgroundAlpha(float alpha) { 1043 if (alpha != mBackgroundAlpha) { 1044 mBackgroundAlpha = alpha; 1045 invalidate(); 1046 } 1047 } 1048 1049 public float getBackgroundAlpha() { 1050 return mBackgroundAlpha; 1051 } 1052 1053 /** 1054 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 1055 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 1056 * as being larger. This method computes what offset the rotated view should be translated 1057 * in order to minimize this perceived gap. 1058 * @param degrees Angle of the view 1059 * @param width Width of the view 1060 * @param height Height of the view 1061 * @return Offset to be used in a View.setTranslationX() call 1062 */ 1063 private float getOffsetXForRotation(float degrees, int width, int height) { 1064 mMatrix.reset(); 1065 mCamera.save(); 1066 mCamera.rotateY(Math.abs(degrees)); 1067 mCamera.getMatrix(mMatrix); 1068 mCamera.restore(); 1069 1070 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 1071 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 1072 mTempFloat2[0] = width; 1073 mTempFloat2[1] = height; 1074 mMatrix.mapPoints(mTempFloat2); 1075 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 1076 } 1077 1078 float backgroundAlphaInterpolator(float r) { 1079 float pivotA = 0.1f; 1080 float pivotB = 0.4f; 1081 if (r < pivotA) { 1082 return 0; 1083 } else if (r > pivotB) { 1084 return 1.0f; 1085 } else { 1086 return (r - pivotA)/(pivotB - pivotA); 1087 } 1088 } 1089 1090 float overScrollBackgroundAlphaInterpolator(float r) { 1091 float threshold = 0.08f; 1092 1093 if (r > mOverScrollMaxBackgroundAlpha) { 1094 mOverScrollMaxBackgroundAlpha = r; 1095 } else if (r < mOverScrollMaxBackgroundAlpha) { 1096 r = mOverScrollMaxBackgroundAlpha; 1097 } 1098 1099 return Math.min(r / threshold, 1.0f); 1100 } 1101 1102 private void screenScrolledLargeUI(int screenCenter) { 1103 for (int i = 0; i < getChildCount(); i++) { 1104 CellLayout cl = (CellLayout) getChildAt(i); 1105 if (cl != null) { 1106 float scrollProgress = getScrollProgress(screenCenter, cl, i); 1107 float rotation = WORKSPACE_ROTATION * scrollProgress; 1108 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1109 1110 // If the current page (i) is being over scrolled, we use a different 1111 // set of rules for setting the background alpha multiplier. 1112 if (!isSmall()) { 1113 if ((mScrollX < 0 && i == 0) || (mScrollX > mMaxScrollX && 1114 i == getChildCount() -1 )) { 1115 cl.setBackgroundAlphaMultiplier( 1116 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 1117 mOverScrollPageIndex = i; 1118 } else if (mOverScrollPageIndex != i) { 1119 cl.setBackgroundAlphaMultiplier( 1120 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1121 } 1122 } 1123 cl.setFastTranslationX(translationX); 1124 cl.setFastRotationY(rotation); 1125 if (mFadeInAdjacentScreens && !isSmall()) { 1126 float alpha = 1 - Math.abs(scrollProgress); 1127 cl.setFastAlpha(alpha); 1128 } 1129 cl.fastInvalidate(); 1130 } 1131 } 1132 invalidate(); 1133 } 1134 1135 private void resetCellLayoutTransforms(CellLayout cl, boolean left) { 1136 cl.setTranslationX(0); 1137 cl.setRotationY(0); 1138 cl.setOverScrollAmount(0, left); 1139 cl.setPivotX(cl.getMeasuredWidth() / 2); 1140 cl.setPivotY(cl.getMeasuredHeight() / 2); 1141 } 1142 1143 private void screenScrolledStandardUI(int screenCenter) { 1144 if (mScrollX < 0 || mScrollX > mMaxScrollX) { 1145 int index = mScrollX < 0 ? 0 : getChildCount() - 1; 1146 CellLayout cl = (CellLayout) getChildAt(index); 1147 float scrollProgress = getScrollProgress(screenCenter, cl, index); 1148 cl.setOverScrollAmount(Math.abs(scrollProgress), index == 0); 1149 float translationX = index == 0 ? mScrollX : - (mMaxScrollX - mScrollX); 1150 float rotation = - WORKSPACE_OVERSCROLL_ROTATION * scrollProgress; 1151 cl.setCameraDistance(mDensity * CAMERA_DISTANCE); 1152 cl.setPivotX(cl.getMeasuredWidth() * (index == 0 ? 0.75f : 0.25f)); 1153 cl.setTranslationX(translationX); 1154 cl.setRotationY(rotation); 1155 } else { 1156 // We don't want to mess with the translations during transitions 1157 if (!isSwitchingState()) { 1158 resetCellLayoutTransforms((CellLayout) getChildAt(0), true); 1159 resetCellLayoutTransforms((CellLayout) getChildAt(getChildCount() - 1), false); 1160 } 1161 } 1162 } 1163 1164 @Override 1165 protected void screenScrolled(int screenCenter) { 1166 if (LauncherApplication.isScreenLarge()) { 1167 // We don't call super.screenScrolled() here because we handle the adjacent pages alpha 1168 // ourselves (for efficiency), and there are no scrolling indicators to update. 1169 screenScrolledLargeUI(screenCenter); 1170 } else { 1171 super.screenScrolled(screenCenter); 1172 screenScrolledStandardUI(screenCenter); 1173 } 1174 } 1175 1176 @Override 1177 protected void overScroll(float amount) { 1178 if (LauncherApplication.isScreenLarge()) { 1179 dampedOverScroll(amount); 1180 } else { 1181 acceleratedOverScroll(amount); 1182 } 1183 } 1184 1185 protected void onAttachedToWindow() { 1186 super.onAttachedToWindow(); 1187 mWindowToken = getWindowToken(); 1188 computeScroll(); 1189 mDragController.setWindowToken(mWindowToken); 1190 } 1191 1192 protected void onDetachedFromWindow() { 1193 mWindowToken = null; 1194 } 1195 1196 @Override 1197 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1198 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1199 mUpdateWallpaperOffsetImmediately = true; 1200 } 1201 super.onLayout(changed, left, top, right, bottom); 1202 1203 // if shrinkToBottom() is called on initialization, it has to be deferred 1204 // until after the first call to onLayout so that it has the correct width 1205 if (mSwitchStateAfterFirstLayout) { 1206 mSwitchStateAfterFirstLayout = false; 1207 // shrink can trigger a synchronous onLayout call, so we 1208 // post this to avoid a stack overflow / tangled onLayout calls 1209 post(new Runnable() { 1210 public void run() { 1211 changeState(mStateAfterFirstLayout, false); 1212 } 1213 }); 1214 } 1215 } 1216 1217 @Override 1218 protected void onDraw(Canvas canvas) { 1219 updateWallpaperOffsets(); 1220 1221 // Draw the background gradient if necessary 1222 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1223 int alpha = (int) (mBackgroundAlpha * 255); 1224 mBackground.setAlpha(alpha); 1225 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1226 getMeasuredHeight()); 1227 mBackground.draw(canvas); 1228 } 1229 1230 super.onDraw(canvas); 1231 } 1232 1233 @Override 1234 protected void dispatchDraw(Canvas canvas) { 1235 super.dispatchDraw(canvas); 1236 1237 if (mInScrollArea && !LauncherApplication.isScreenLarge()) { 1238 final int width = getWidth(); 1239 final int height = getHeight(); 1240 final int pageHeight = getChildAt(0).getHeight(); 1241 1242 // Set the height of the outline to be the height of the page 1243 final int offset = (height - pageHeight - mPaddingTop - mPaddingBottom) / 2; 1244 final int paddingTop = mPaddingTop + offset; 1245 final int paddingBottom = mPaddingBottom + offset; 1246 1247 final CellLayout leftPage = (CellLayout) getChildAt(mCurrentPage - 1); 1248 final CellLayout rightPage = (CellLayout) getChildAt(mCurrentPage + 1); 1249 1250 if (leftPage != null && leftPage.getIsDragOverlapping()) { 1251 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left_holo); 1252 d.setBounds(mScrollX, paddingTop, mScrollX + d.getIntrinsicWidth(), 1253 height - paddingBottom); 1254 d.draw(canvas); 1255 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 1256 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right_holo); 1257 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), paddingTop, mScrollX + width, 1258 height - paddingBottom); 1259 d.draw(canvas); 1260 } 1261 } 1262 } 1263 1264 @Override 1265 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1266 if (!mLauncher.isAllAppsVisible()) { 1267 final Folder openFolder = getOpenFolder(); 1268 if (openFolder != null) { 1269 return openFolder.requestFocus(direction, previouslyFocusedRect); 1270 } else { 1271 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1272 } 1273 } 1274 return false; 1275 } 1276 1277 @Override 1278 public int getDescendantFocusability() { 1279 if (isSmall()) { 1280 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1281 } 1282 return super.getDescendantFocusability(); 1283 } 1284 1285 @Override 1286 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1287 if (!mLauncher.isAllAppsVisible()) { 1288 final Folder openFolder = getOpenFolder(); 1289 if (openFolder != null) { 1290 openFolder.addFocusables(views, direction); 1291 } else { 1292 super.addFocusables(views, direction, focusableMode); 1293 } 1294 } 1295 } 1296 1297 public boolean isSmall() { 1298 return mState == State.SMALL || mState == State.SPRING_LOADED; 1299 } 1300 1301 void enableChildrenCache(int fromPage, int toPage) { 1302 if (fromPage > toPage) { 1303 final int temp = fromPage; 1304 fromPage = toPage; 1305 toPage = temp; 1306 } 1307 1308 final int screenCount = getChildCount(); 1309 1310 fromPage = Math.max(fromPage, 0); 1311 toPage = Math.min(toPage, screenCount - 1); 1312 1313 for (int i = fromPage; i <= toPage; i++) { 1314 final CellLayout layout = (CellLayout) getChildAt(i); 1315 layout.setChildrenDrawnWithCacheEnabled(true); 1316 layout.setChildrenDrawingCacheEnabled(true); 1317 } 1318 } 1319 1320 void clearChildrenCache() { 1321 final int screenCount = getChildCount(); 1322 for (int i = 0; i < screenCount; i++) { 1323 final CellLayout layout = (CellLayout) getChildAt(i); 1324 layout.setChildrenDrawnWithCacheEnabled(false); 1325 // In software mode, we don't want the items to continue to be drawn into bitmaps 1326 if (!isHardwareAccelerated()) { 1327 layout.setChildrenDrawingCacheEnabled(false); 1328 } 1329 } 1330 } 1331 1332 private void updateChildrenLayersEnabled() { 1333 boolean small = isSmall() || mIsSwitchingState; 1334 boolean dragging = mAnimatingViewIntoPlace || mIsDragOccuring; 1335 boolean enableChildrenLayers = small || dragging || isPageMoving(); 1336 1337 if (enableChildrenLayers != mChildrenLayersEnabled) { 1338 mChildrenLayersEnabled = enableChildrenLayers; 1339 for (int i = 0; i < getPageCount(); i++) { 1340 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(enableChildrenLayers); 1341 } 1342 } 1343 } 1344 1345 protected void onWallpaperTap(MotionEvent ev) { 1346 final int[] position = mTempCell; 1347 getLocationOnScreen(position); 1348 1349 int pointerIndex = ev.getActionIndex(); 1350 position[0] += (int) ev.getX(pointerIndex); 1351 position[1] += (int) ev.getY(pointerIndex); 1352 1353 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1354 ev.getAction() == MotionEvent.ACTION_UP 1355 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1356 position[0], position[1], 0, null); 1357 } 1358 1359 /* 1360 * This interpolator emulates the rate at which the perceived scale of an object changes 1361 * as its distance from a camera increases. When this interpolator is applied to a scale 1362 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1363 * from the camera. 1364 */ 1365 static class ZInterpolator implements TimeInterpolator { 1366 private float focalLength; 1367 1368 public ZInterpolator(float foc) { 1369 focalLength = foc; 1370 } 1371 1372 public float getInterpolation(float input) { 1373 return (1.0f - focalLength / (focalLength + input)) / 1374 (1.0f - focalLength / (focalLength + 1.0f)); 1375 } 1376 } 1377 1378 /* 1379 * The exact reverse of ZInterpolator. 1380 */ 1381 static class InverseZInterpolator implements TimeInterpolator { 1382 private ZInterpolator zInterpolator; 1383 public InverseZInterpolator(float foc) { 1384 zInterpolator = new ZInterpolator(foc); 1385 } 1386 public float getInterpolation(float input) { 1387 return 1 - zInterpolator.getInterpolation(1 - input); 1388 } 1389 } 1390 1391 /* 1392 * ZInterpolator compounded with an ease-out. 1393 */ 1394 static class ZoomOutInterpolator implements TimeInterpolator { 1395 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(0.75f); 1396 private final ZInterpolator zInterpolator = new ZInterpolator(0.13f); 1397 1398 public float getInterpolation(float input) { 1399 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1400 } 1401 } 1402 1403 /* 1404 * InvereZInterpolator compounded with an ease-out. 1405 */ 1406 static class ZoomInInterpolator implements TimeInterpolator { 1407 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1408 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1409 1410 public float getInterpolation(float input) { 1411 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1412 } 1413 } 1414 1415 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1416 1417 /* 1418 * 1419 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1420 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1421 * 1422 * These methods mark the appropriate pages as accepting drops (which alters their visual 1423 * appearance). 1424 * 1425 */ 1426 public void onDragStartedWithItem(View v) { 1427 final Canvas canvas = new Canvas(); 1428 1429 // We need to add extra padding to the bitmap to make room for the glow effect 1430 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1431 1432 // The outline is used to visualize where the item will land if dropped 1433 mDragOutline = createDragOutline(v, canvas, bitmapPadding); 1434 } 1435 1436 public void onDragStartedWithItemSpans(int spanX, int spanY, Bitmap b) { 1437 onDragStartedWithItemSpans(spanX, spanY, b, null); 1438 } 1439 1440 public void onDragStartedWithItemSpans(int spanX, int spanY, Bitmap b, Paint alphaClipPaint) { 1441 final Canvas canvas = new Canvas(); 1442 1443 // We need to add extra padding to the bitmap to make room for the glow effect 1444 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1445 1446 CellLayout cl = (CellLayout) getChildAt(0); 1447 1448 int[] size = cl.cellSpansToSize(spanX, spanY); 1449 1450 // The outline is used to visualize where the item will land if dropped 1451 mDragOutline = createDragOutline(b, canvas, bitmapPadding, size[0], size[1], alphaClipPaint); 1452 } 1453 1454 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1455 // never dragged over 1456 public void onDragStopped(boolean success) { 1457 // In the success case, DragController has already called onDragExit() 1458 if (!success) { 1459 doDragExit(null); 1460 } 1461 } 1462 1463 public void exitWidgetResizeMode() { 1464 DragLayer dragLayer = mLauncher.getDragLayer(); 1465 dragLayer.clearAllResizeFrames(); 1466 } 1467 1468 private void initAnimationArrays() { 1469 final int childCount = getChildCount(); 1470 if (mOldTranslationXs != null) return; 1471 mOldTranslationXs = new float[childCount]; 1472 mOldTranslationYs = new float[childCount]; 1473 mOldScaleXs = new float[childCount]; 1474 mOldScaleYs = new float[childCount]; 1475 mOldBackgroundAlphas = new float[childCount]; 1476 mOldBackgroundAlphaMultipliers = new float[childCount]; 1477 mOldAlphas = new float[childCount]; 1478 mOldRotationYs = new float[childCount]; 1479 mNewTranslationXs = new float[childCount]; 1480 mNewTranslationYs = new float[childCount]; 1481 mNewScaleXs = new float[childCount]; 1482 mNewScaleYs = new float[childCount]; 1483 mNewBackgroundAlphas = new float[childCount]; 1484 mNewBackgroundAlphaMultipliers = new float[childCount]; 1485 mNewAlphas = new float[childCount]; 1486 mNewRotationYs = new float[childCount]; 1487 } 1488 1489 public void changeState(State shrinkState) { 1490 changeState(shrinkState, true); 1491 } 1492 1493 void changeState(final State state, boolean animated) { 1494 changeState(state, animated, 0); 1495 } 1496 1497 void changeState(final State state, boolean animated, int delay) { 1498 if (mState == state) { 1499 return; 1500 } 1501 if (mFirstLayout) { 1502 // (mFirstLayout == "first layout has not happened yet") 1503 // cancel any pending shrinks that were set earlier 1504 mSwitchStateAfterFirstLayout = false; 1505 mStateAfterFirstLayout = state; 1506 return; 1507 } 1508 1509 // Initialize animation arrays for the first time if necessary 1510 initAnimationArrays(); 1511 1512 // Cancel any running transition animations 1513 if (mAnimator != null) mAnimator.cancel(); 1514 mAnimator = new AnimatorSet(); 1515 1516 // Stop any scrolling, move to the current page right away 1517 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1518 1519 final State oldState = mState; 1520 final boolean oldStateIsNormal = (oldState == State.NORMAL); 1521 final boolean oldStateIsSmall = (oldState == State.SMALL); 1522 mState = state; 1523 final boolean stateIsNormal = (state == State.NORMAL); 1524 final boolean stateIsSpringLoaded = (state == State.SPRING_LOADED); 1525 final boolean stateIsSmall = (state == State.SMALL); 1526 float finalScaleFactor = 1.0f; 1527 float finalBackgroundAlpha = stateIsSpringLoaded ? 1.0f : 0f; 1528 float translationX = 0; 1529 float translationY = 0; 1530 boolean zoomIn = true; 1531 1532 if (state != State.NORMAL) { 1533 finalScaleFactor = mSpringLoadedShrinkFactor - (stateIsSmall ? 0.1f : 0); 1534 if (oldStateIsNormal && stateIsSmall) { 1535 zoomIn = false; 1536 setLayoutScale(finalScaleFactor); 1537 updateChildrenLayersEnabled(); 1538 } else { 1539 finalBackgroundAlpha = 1.0f; 1540 setLayoutScale(finalScaleFactor); 1541 } 1542 } else { 1543 setLayoutScale(1.0f); 1544 } 1545 1546 final int duration = zoomIn ? 1547 getResources().getInteger(R.integer.config_workspaceUnshrinkTime) : 1548 getResources().getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1549 for (int i = 0; i < getChildCount(); i++) { 1550 final CellLayout cl = (CellLayout) getChildAt(i); 1551 float rotation = 0f; 1552 float initialAlpha = cl.getAlpha(); 1553 float finalAlphaMultiplierValue = 1f; 1554 float finalAlpha = (!mFadeInAdjacentScreens || stateIsSpringLoaded || 1555 (i == mCurrentPage)) ? 1f : 0f; 1556 1557 // Determine the pages alpha during the state transition 1558 if ((oldStateIsSmall && stateIsNormal) || 1559 (oldStateIsNormal && stateIsSmall)) { 1560 // To/from workspace - only show the current page unless the transition is not 1561 // animated and the animation end callback below doesn't run 1562 if (i == mCurrentPage || !animated) { 1563 finalAlpha = 1f; 1564 finalAlphaMultiplierValue = 0f; 1565 } else { 1566 initialAlpha = 0f; 1567 finalAlpha = 0f; 1568 } 1569 } 1570 1571 // Update the rotation of the screen (don't apply rotation on Phone UI) 1572 if (LauncherApplication.isScreenLarge()) { 1573 if (i < mCurrentPage) { 1574 rotation = WORKSPACE_ROTATION; 1575 } else if (i > mCurrentPage) { 1576 rotation = -WORKSPACE_ROTATION; 1577 } 1578 } 1579 1580 // If the screen is not xlarge, then don't rotate the CellLayouts 1581 // NOTE: If we don't update the side pages alpha, then we should not hide the side 1582 // pages. see unshrink(). 1583 if (LauncherApplication.isScreenLarge()) { 1584 translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1585 } 1586 1587 mOldAlphas[i] = initialAlpha; 1588 mNewAlphas[i] = finalAlpha; 1589 if (animated) { 1590 mOldTranslationXs[i] = cl.getTranslationX(); 1591 mOldTranslationYs[i] = cl.getTranslationY(); 1592 mOldScaleXs[i] = cl.getScaleX(); 1593 mOldScaleYs[i] = cl.getScaleY(); 1594 mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1595 mOldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1596 mOldRotationYs[i] = cl.getRotationY(); 1597 1598 mNewTranslationXs[i] = translationX; 1599 mNewTranslationYs[i] = translationY; 1600 mNewScaleXs[i] = finalScaleFactor; 1601 mNewScaleYs[i] = finalScaleFactor; 1602 mNewBackgroundAlphas[i] = finalBackgroundAlpha; 1603 mNewBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1604 mNewRotationYs[i] = rotation; 1605 } else { 1606 cl.setTranslationX(translationX); 1607 cl.setTranslationY(translationY); 1608 cl.setScaleX(finalScaleFactor); 1609 cl.setScaleY(finalScaleFactor); 1610 cl.setBackgroundAlpha(finalBackgroundAlpha); 1611 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1612 cl.setAlpha(finalAlpha); 1613 cl.setRotationY(rotation); 1614 mChangeStateAnimationListener.onAnimationEnd(null); 1615 } 1616 } 1617 1618 if (animated) { 1619 ValueAnimator animWithInterpolator = 1620 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1621 1622 if (zoomIn) { 1623 animWithInterpolator.setInterpolator(mZoomInInterpolator); 1624 } 1625 1626 animWithInterpolator.addListener(new AnimatorListenerAdapter() { 1627 @Override 1628 public void onAnimationEnd(android.animation.Animator animation) { 1629 // The above code to determine initialAlpha and finalAlpha will ensure that only 1630 // the current page is visible during (and subsequently, after) the transition 1631 // animation. If fade adjacent pages is disabled, then re-enable the page 1632 // visibility after the transition animation. 1633 if (!mFadeInAdjacentScreens && stateIsNormal && oldStateIsSmall) { 1634 for (int i = 0; i < getChildCount(); i++) { 1635 final CellLayout cl = (CellLayout) getChildAt(i); 1636 cl.setAlpha(1f); 1637 } 1638 } 1639 } 1640 }); 1641 animWithInterpolator.addUpdateListener(new LauncherAnimatorUpdateListener() { 1642 public void onAnimationUpdate(float a, float b) { 1643 mTransitionProgress = b; 1644 if (b == 0f) { 1645 // an optimization, but not required 1646 return; 1647 } 1648 invalidate(); 1649 for (int i = 0; i < getChildCount(); i++) { 1650 final CellLayout cl = (CellLayout) getChildAt(i); 1651 cl.fastInvalidate(); 1652 cl.setFastTranslationX(a * mOldTranslationXs[i] + b * mNewTranslationXs[i]); 1653 cl.setFastTranslationY(a * mOldTranslationYs[i] + b * mNewTranslationYs[i]); 1654 cl.setFastScaleX(a * mOldScaleXs[i] + b * mNewScaleXs[i]); 1655 cl.setFastScaleY(a * mOldScaleYs[i] + b * mNewScaleYs[i]); 1656 cl.setFastBackgroundAlpha( 1657 a * mOldBackgroundAlphas[i] + b * mNewBackgroundAlphas[i]); 1658 cl.setBackgroundAlphaMultiplier(a * mOldBackgroundAlphaMultipliers[i] + 1659 b * mNewBackgroundAlphaMultipliers[i]); 1660 cl.setFastAlpha(a * mOldAlphas[i] + b * mNewAlphas[i]); 1661 } 1662 } 1663 }); 1664 1665 ValueAnimator rotationAnim = 1666 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1667 rotationAnim.setInterpolator(new DecelerateInterpolator(2.0f)); 1668 rotationAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1669 public void onAnimationUpdate(float a, float b) { 1670 if (b == 0f) { 1671 // an optimization, but not required 1672 return; 1673 } 1674 for (int i = 0; i < getChildCount(); i++) { 1675 final CellLayout cl = (CellLayout) getChildAt(i); 1676 cl.setFastRotationY(a * mOldRotationYs[i] + b * mNewRotationYs[i]); 1677 } 1678 } 1679 }); 1680 1681 mAnimator.playTogether(animWithInterpolator, rotationAnim); 1682 mAnimator.setStartDelay(delay); 1683 // If we call this when we're not animated, onAnimationEnd is never called on 1684 // the listener; make sure we only use the listener when we're actually animating 1685 mAnimator.addListener(mChangeStateAnimationListener); 1686 mAnimator.start(); 1687 } 1688 1689 if (stateIsSpringLoaded) { 1690 // Right now we're covered by Apps Customize 1691 // Show the background gradient immediately, so the gradient will 1692 // be showing once AppsCustomize disappears 1693 animateBackgroundGradient(getResources().getInteger( 1694 R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, false); 1695 } else { 1696 // Fade the background gradient away 1697 animateBackgroundGradient(0f, true); 1698 } 1699 } 1700 1701 /** 1702 * Draw the View v into the given Canvas. 1703 * 1704 * @param v the view to draw 1705 * @param destCanvas the canvas to draw on 1706 * @param padding the horizontal and vertical padding to use when drawing 1707 */ 1708 private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { 1709 final Rect clipRect = mTempRect; 1710 v.getDrawingRect(clipRect); 1711 1712 boolean textVisible = false; 1713 1714 destCanvas.save(); 1715 if (v instanceof TextView && pruneToDrawable) { 1716 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1717 clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); 1718 destCanvas.translate(padding / 2, padding / 2); 1719 d.draw(destCanvas); 1720 } else { 1721 if (v instanceof FolderIcon) { 1722 // For FolderIcons the text can bleed into the icon area, and so we need to 1723 // hide the text completely (which can't be achieved by clipping). 1724 if (((FolderIcon) v).getTextVisible()) { 1725 ((FolderIcon) v).setTextVisible(false); 1726 textVisible = true; 1727 } 1728 } else if (v instanceof BubbleTextView) { 1729 final BubbleTextView tv = (BubbleTextView) v; 1730 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1731 tv.getLayout().getLineTop(0); 1732 } else if (v instanceof TextView) { 1733 final TextView tv = (TextView) v; 1734 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1735 tv.getLayout().getLineTop(0); 1736 } 1737 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1738 destCanvas.clipRect(clipRect, Op.REPLACE); 1739 v.draw(destCanvas); 1740 1741 // Restore text visibility of FolderIcon if necessary 1742 if (textVisible) { 1743 ((FolderIcon) v).setTextVisible(true); 1744 } 1745 } 1746 destCanvas.restore(); 1747 } 1748 1749 /** 1750 * Returns a new bitmap to show when the given View is being dragged around. 1751 * Responsibility for the bitmap is transferred to the caller. 1752 */ 1753 public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1754 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1755 Bitmap b; 1756 1757 if (v instanceof TextView) { 1758 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1759 b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, 1760 d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); 1761 } else { 1762 b = Bitmap.createBitmap( 1763 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1764 } 1765 1766 canvas.setBitmap(b); 1767 drawDragView(v, canvas, padding, true); 1768 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 1769 canvas.drawColor(mDragViewMultiplyColor, PorterDuff.Mode.MULTIPLY); 1770 canvas.setBitmap(null); 1771 1772 return b; 1773 } 1774 1775 /** 1776 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1777 * Responsibility for the bitmap is transferred to the caller. 1778 */ 1779 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1780 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1781 final Bitmap b = Bitmap.createBitmap( 1782 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1783 1784 canvas.setBitmap(b); 1785 drawDragView(v, canvas, padding, true); 1786 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1787 canvas.setBitmap(null); 1788 return b; 1789 } 1790 1791 /** 1792 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1793 * Responsibility for the bitmap is transferred to the caller. 1794 */ 1795 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h) { 1796 return createDragOutline(orig, canvas, padding, w, h, null); 1797 } 1798 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h, 1799 Paint alphaClipPaint) { 1800 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1801 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1802 canvas.setBitmap(b); 1803 1804 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 1805 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 1806 (h - padding) / (float) orig.getHeight()); 1807 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 1808 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 1809 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 1810 1811 // center the image 1812 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 1813 1814 Paint p = new Paint(); 1815 p.setFilterBitmap(true); 1816 canvas.drawBitmap(orig, src, dst, p); 1817 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor, 1818 alphaClipPaint); 1819 canvas.setBitmap(null); 1820 1821 return b; 1822 } 1823 1824 /** 1825 * Creates a drag outline to represent a drop (that we don't have the actual information for 1826 * yet). May be changed in the future to alter the drop outline slightly depending on the 1827 * clip description mime data. 1828 */ 1829 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 1830 Resources r = getResources(); 1831 final int outlineColor = r.getColor(android.R.color.holo_blue_light); 1832 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 1833 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 1834 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 1835 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 1836 final Bitmap b = Bitmap.createBitmap( 1837 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 1838 1839 canvas.setBitmap(b); 1840 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 1841 rectRadius, rectRadius, mExternalDragOutlinePaint); 1842 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1843 canvas.setBitmap(null); 1844 return b; 1845 } 1846 1847 void startDrag(CellLayout.CellInfo cellInfo) { 1848 View child = cellInfo.cell; 1849 1850 // Make sure the drag was started by a long press as opposed to a long click. 1851 if (!child.isInTouchMode()) { 1852 return; 1853 } 1854 1855 mDragInfo = cellInfo; 1856 child.setVisibility(GONE); 1857 1858 child.clearFocus(); 1859 child.setPressed(false); 1860 1861 final Canvas canvas = new Canvas(); 1862 1863 // We need to add extra padding to the bitmap to make room for the glow effect 1864 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1865 1866 // The outline is used to visualize where the item will land if dropped 1867 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 1868 beginDragShared(child, this); 1869 } 1870 1871 public void beginDragShared(View child, DragSource source) { 1872 Resources r = getResources(); 1873 1874 // We need to add extra padding to the bitmap to make room for the glow effect 1875 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1876 1877 // The drag bitmap follows the touch point around on the screen 1878 final Bitmap b = createDragBitmap(child, new Canvas(), bitmapPadding); 1879 1880 final int bmpWidth = b.getWidth(); 1881 1882 mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 1883 final int dragLayerX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 1884 int dragLayerY = mTempXY[1] - bitmapPadding / 2; 1885 1886 Point dragVisualizeOffset = null; 1887 Rect dragRect = null; 1888 if (child instanceof BubbleTextView || child instanceof PagedViewIcon) { 1889 int iconSize = r.getDimensionPixelSize(R.dimen.app_icon_size); 1890 int iconPaddingTop = r.getDimensionPixelSize(R.dimen.app_icon_padding_top); 1891 int top = child.getPaddingTop(); 1892 int left = (bmpWidth - iconSize) / 2; 1893 int right = left + iconSize; 1894 int bottom = top + iconSize; 1895 dragLayerY += top; 1896 // Note: The drag region is used to calculate drag layer offsets, but the 1897 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 1898 dragVisualizeOffset = new Point(-bitmapPadding / 2, iconPaddingTop - bitmapPadding / 2); 1899 dragRect = new Rect(left, top, right, bottom); 1900 } else if (child instanceof FolderIcon) { 1901 int previewSize = r.getDimensionPixelSize(R.dimen.folder_preview_size); 1902 dragRect = new Rect(0, 0, child.getWidth(), previewSize); 1903 } 1904 1905 // Clear the pressed state if necessary 1906 if (child instanceof BubbleTextView) { 1907 BubbleTextView icon = (BubbleTextView) child; 1908 icon.clearPressedOrFocusedBackground(); 1909 } 1910 1911 mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 1912 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect); 1913 b.recycle(); 1914 } 1915 1916 void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, int screen, 1917 int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { 1918 View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); 1919 1920 final int[] cellXY = new int[2]; 1921 target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1922 addInScreen(view, container, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1923 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, cellXY[0], 1924 cellXY[1]); 1925 } 1926 1927 public boolean transitionStateShouldAllowDrop() { 1928 return (!isSwitchingState() || mTransitionProgress > 0.5f); 1929 } 1930 1931 /** 1932 * {@inheritDoc} 1933 */ 1934 public boolean acceptDrop(DragObject d) { 1935 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1936 if (d.dragSource != this) { 1937 // Don't accept the drop if we're not over a screen at time of drop 1938 if (mDragTargetLayout == null) { 1939 return false; 1940 } 1941 if (!transitionStateShouldAllowDrop()) return false; 1942 1943 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 1944 d.dragView, mDragViewVisualCenter); 1945 1946 // We want the point to be mapped to the dragTarget. 1947 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 1948 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 1949 } else { 1950 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 1951 } 1952 1953 int spanX = 1; 1954 int spanY = 1; 1955 View ignoreView = null; 1956 if (mDragInfo != null) { 1957 final CellLayout.CellInfo dragCellInfo = mDragInfo; 1958 spanX = dragCellInfo.spanX; 1959 spanY = dragCellInfo.spanY; 1960 ignoreView = dragCellInfo.cell; 1961 } else { 1962 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 1963 spanX = dragInfo.spanX; 1964 spanY = dragInfo.spanY; 1965 } 1966 1967 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 1968 (int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell); 1969 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, true)) { 1970 return true; 1971 } 1972 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, 1973 mTargetCell)) { 1974 return true; 1975 } 1976 1977 1978 // Don't accept the drop if there's no room for the item 1979 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 1980 mLauncher.showOutOfSpaceMessage(); 1981 return false; 1982 } 1983 } 1984 return true; 1985 } 1986 1987 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, 1988 boolean considerTimeout) { 1989 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 1990 1991 boolean hasntMoved = false; 1992 if (mDragInfo != null) { 1993 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 1994 hasntMoved = (mDragInfo.cellX == targetCell[0] && 1995 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 1996 } 1997 1998 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 1999 return false; 2000 } 2001 2002 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2003 boolean willBecomeShortcut = 2004 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2005 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2006 2007 return (aboveShortcut && willBecomeShortcut); 2008 } 2009 2010 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell) { 2011 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2012 if (dropOverView instanceof FolderIcon) { 2013 FolderIcon fi = (FolderIcon) dropOverView; 2014 if (fi.acceptDrop(dragInfo)) { 2015 return true; 2016 } 2017 } 2018 return false; 2019 } 2020 2021 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2022 int[] targetCell, boolean external, DragView dragView, Runnable postAnimationRunnable) { 2023 View v = target.getChildAt(targetCell[0], targetCell[1]); 2024 boolean hasntMoved = false; 2025 if (mDragInfo != null) { 2026 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2027 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2028 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2029 } 2030 2031 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2032 mCreateUserFolderOnDrop = false; 2033 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 2034 2035 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2036 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2037 2038 if (aboveShortcut && willBecomeShortcut) { 2039 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2040 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2041 // if the drag started here, we need to remove it from the workspace 2042 if (!external) { 2043 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2044 } 2045 2046 Rect folderLocation = new Rect(); 2047 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2048 target.removeView(v); 2049 2050 FolderIcon fi = 2051 mLauncher.addFolder(target, container, screen, targetCell[0], targetCell[1]); 2052 destInfo.cellX = -1; 2053 destInfo.cellY = -1; 2054 sourceInfo.cellX = -1; 2055 sourceInfo.cellY = -1; 2056 2057 // If the dragView is null, we can't animate 2058 boolean animate = dragView != null; 2059 if (animate) { 2060 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2061 postAnimationRunnable); 2062 } else { 2063 fi.addItem(destInfo); 2064 fi.addItem(sourceInfo); 2065 } 2066 return true; 2067 } 2068 return false; 2069 } 2070 2071 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2072 DragObject d, boolean external) { 2073 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2074 if (dropOverView instanceof FolderIcon) { 2075 FolderIcon fi = (FolderIcon) dropOverView; 2076 if (fi.acceptDrop(d.dragInfo)) { 2077 fi.onDrop(d); 2078 2079 // if the drag started here, we need to remove it from the workspace 2080 if (!external) { 2081 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2082 } 2083 return true; 2084 } 2085 } 2086 return false; 2087 } 2088 2089 public void onDrop(DragObject d) { 2090 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2091 mDragViewVisualCenter); 2092 2093 // We want the point to be mapped to the dragTarget. 2094 if (mDragTargetLayout != null) { 2095 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2096 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2097 } else { 2098 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2099 } 2100 } 2101 2102 CellLayout dropTargetLayout = mDragTargetLayout; 2103 2104 int snapScreen = -1; 2105 if (d.dragSource != this) { 2106 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2107 (int) mDragViewVisualCenter[1] }; 2108 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2109 } else if (mDragInfo != null) { 2110 final View cell = mDragInfo.cell; 2111 2112 if (dropTargetLayout != null) { 2113 // Move internally 2114 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2115 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2116 long container = hasMovedIntoHotseat ? 2117 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2118 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2119 int screen = (mTargetCell[0] < 0) ? 2120 mDragInfo.screen : indexOfChild(dropTargetLayout); 2121 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2122 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2123 // First we find the cell nearest to point at which the item is 2124 // dropped, without any consideration to whether there is an item there. 2125 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2126 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2127 // If the item being dropped is a shortcut and the nearest drop 2128 // cell also contains a shortcut, then create a folder with the two shortcuts. 2129 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2130 dropTargetLayout, mTargetCell, false, d.dragView, null)) { 2131 return; 2132 } 2133 2134 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, d, false)) { 2135 return; 2136 } 2137 2138 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2139 // we need to find the nearest cell location that is vacant 2140 mTargetCell = findNearestVacantArea((int) mDragViewVisualCenter[0], 2141 (int) mDragViewVisualCenter[1], mDragInfo.spanX, mDragInfo.spanY, cell, 2142 dropTargetLayout, mTargetCell); 2143 2144 if (mCurrentPage != screen && !hasMovedIntoHotseat) { 2145 snapScreen = screen; 2146 snapToPage(screen); 2147 } 2148 2149 if (mTargetCell[0] >= 0 && mTargetCell[1] >= 0) { 2150 if (hasMovedLayouts) { 2151 // Reparent the view 2152 getParentCellLayoutForView(cell).removeView(cell); 2153 addInScreen(cell, container, screen, mTargetCell[0], mTargetCell[1], 2154 mDragInfo.spanX, mDragInfo.spanY); 2155 } 2156 2157 // update the item's position after drop 2158 final ItemInfo info = (ItemInfo) cell.getTag(); 2159 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2160 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 2161 lp.cellX = mTargetCell[0]; 2162 lp.cellY = mTargetCell[1]; 2163 cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screen, 2164 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2165 2166 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2167 cell instanceof LauncherAppWidgetHostView) { 2168 final CellLayout cellLayout = dropTargetLayout; 2169 // We post this call so that the widget has a chance to be placed 2170 // in its final location 2171 2172 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2173 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2174 if (pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2175 final Runnable resizeRunnable = new Runnable() { 2176 public void run() { 2177 DragLayer dragLayer = mLauncher.getDragLayer(); 2178 dragLayer.addResizeFrame(info, hostView, cellLayout); 2179 } 2180 }; 2181 post(new Runnable() { 2182 public void run() { 2183 if (!isPageMoving()) { 2184 resizeRunnable.run(); 2185 } else { 2186 mDelayedResizeRunnable = resizeRunnable; 2187 } 2188 } 2189 }); 2190 } 2191 } 2192 2193 LauncherModel.moveItemInDatabase(mLauncher, info, container, screen, lp.cellX, 2194 lp.cellY); 2195 } 2196 } 2197 2198 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2199 2200 // Prepare it to be animated into its new position 2201 // This must be called after the view has been re-parented 2202 final Runnable disableHardwareLayersRunnable = new Runnable() { 2203 @Override 2204 public void run() { 2205 mAnimatingViewIntoPlace = false; 2206 updateChildrenLayersEnabled(); 2207 } 2208 }; 2209 mAnimatingViewIntoPlace = true; 2210 if (d.dragView.hasDrawn()) { 2211 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2212 setFinalScrollForPageChange(snapScreen); 2213 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2214 disableHardwareLayersRunnable); 2215 resetFinalScrollForPageChange(snapScreen); 2216 } else { 2217 cell.setVisibility(VISIBLE); 2218 } 2219 parent.onDropChild(cell); 2220 } 2221 } 2222 2223 public void setFinalScrollForPageChange(int screen) { 2224 if (screen >= 0) { 2225 mSavedScrollX = getScrollX(); 2226 CellLayout cl = (CellLayout) getChildAt(screen); 2227 mSavedTranslationX = cl.getTranslationX(); 2228 mSavedRotationY = cl.getRotationY(); 2229 final int newX = getChildOffset(screen) - getRelativeChildOffset(screen); 2230 setScrollX(newX); 2231 cl.setTranslationX(0f); 2232 cl.setRotationY(0f); 2233 } 2234 } 2235 2236 public void resetFinalScrollForPageChange(int screen) { 2237 if (screen >= 0) { 2238 CellLayout cl = (CellLayout) getChildAt(screen); 2239 setScrollX(mSavedScrollX); 2240 cl.setTranslationX(mSavedTranslationX); 2241 cl.setRotationY(mSavedRotationY); 2242 } 2243 } 2244 2245 public void getViewLocationRelativeToSelf(View v, int[] location) { 2246 getLocationInWindow(location); 2247 int x = location[0]; 2248 int y = location[1]; 2249 2250 v.getLocationInWindow(location); 2251 int vX = location[0]; 2252 int vY = location[1]; 2253 2254 location[0] = vX - x; 2255 location[1] = vY - y; 2256 } 2257 2258 public void onDragEnter(DragObject d) { 2259 if (mDragTargetLayout != null) { 2260 mDragTargetLayout.setIsDragOverlapping(false); 2261 mDragTargetLayout.onDragExit(); 2262 } 2263 mDragTargetLayout = getCurrentDropLayout(); 2264 mDragTargetLayout.setIsDragOverlapping(true); 2265 mDragTargetLayout.onDragEnter(); 2266 2267 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2268 // don't need to show the outlines 2269 if (LauncherApplication.isScreenLarge()) { 2270 showOutlines(); 2271 } 2272 } 2273 2274 private void doDragExit(DragObject d) { 2275 // Clean up folders 2276 cleanupFolderCreation(d); 2277 2278 // Reset the scroll area and previous drag target 2279 onResetScrollArea(); 2280 2281 if (mDragTargetLayout != null) { 2282 mDragTargetLayout.setIsDragOverlapping(false); 2283 mDragTargetLayout.onDragExit(); 2284 } 2285 mLastDragOverView = null; 2286 2287 if (!mIsPageMoving) { 2288 hideOutlines(); 2289 } 2290 } 2291 2292 public void onDragExit(DragObject d) { 2293 doDragExit(d); 2294 } 2295 2296 public DropTarget getDropTargetDelegate(DragObject d) { 2297 return null; 2298 } 2299 2300 /** 2301 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 2302 * in the returned structure related to the widgets that match the drop (or a null list if it is 2303 * a shortcut drop). If the drop is not accepted then a null structure is returned. 2304 */ 2305 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 2306 final LauncherModel model = mLauncher.getModel(); 2307 final ClipDescription desc = event.getClipDescription(); 2308 final int mimeTypeCount = desc.getMimeTypeCount(); 2309 for (int i = 0; i < mimeTypeCount; ++i) { 2310 final String mimeType = desc.getMimeType(i); 2311 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 2312 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 2313 } else { 2314 final List<WidgetMimeTypeHandlerData> widgets = 2315 model.resolveWidgetsForMimeType(mContext, mimeType); 2316 if (widgets.size() > 0) { 2317 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 2318 } 2319 } 2320 } 2321 return null; 2322 } 2323 2324 /** 2325 * Global drag and drop handler 2326 */ 2327 @Override 2328 public boolean onDragEvent(DragEvent event) { 2329 final ClipDescription desc = event.getClipDescription(); 2330 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 2331 final int[] pos = new int[2]; 2332 layout.getLocationOnScreen(pos); 2333 // We need to offset the drag coordinates to layout coordinate space 2334 final int x = (int) event.getX() - pos[0]; 2335 final int y = (int) event.getY() - pos[1]; 2336 2337 switch (event.getAction()) { 2338 case DragEvent.ACTION_DRAG_STARTED: { 2339 // Validate this drag 2340 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2341 if (test != null) { 2342 boolean isShortcut = (test.second == null); 2343 if (isShortcut) { 2344 // Check if we have enough space on this screen to add a new shortcut 2345 if (!layout.findCellForSpan(pos, 1, 1)) { 2346 mLauncher.showOutOfSpaceMessage(); 2347 return false; 2348 } 2349 } 2350 } else { 2351 // Show error message if we couldn't accept any of the items 2352 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 2353 Toast.LENGTH_SHORT).show(); 2354 return false; 2355 } 2356 2357 // Create the drag outline 2358 // We need to add extra padding to the bitmap to make room for the glow effect 2359 final Canvas canvas = new Canvas(); 2360 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2361 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 2362 2363 // Show the current page outlines to indicate that we can accept this drop 2364 showOutlines(); 2365 layout.onDragEnter(); 2366 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1, null, null); 2367 2368 return true; 2369 } 2370 case DragEvent.ACTION_DRAG_LOCATION: 2371 // Visualize the drop location 2372 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1, null, null); 2373 return true; 2374 case DragEvent.ACTION_DROP: { 2375 // Try and add any shortcuts 2376 final LauncherModel model = mLauncher.getModel(); 2377 final ClipData data = event.getClipData(); 2378 2379 // We assume that the mime types are ordered in descending importance of 2380 // representation. So we enumerate the list of mime types and alert the 2381 // user if any widgets can handle the drop. Only the most preferred 2382 // representation will be handled. 2383 pos[0] = x; 2384 pos[1] = y; 2385 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2386 if (test != null) { 2387 final int index = test.first; 2388 final List<WidgetMimeTypeHandlerData> widgets = test.second; 2389 final boolean isShortcut = (widgets == null); 2390 final String mimeType = desc.getMimeType(index); 2391 if (isShortcut) { 2392 final Intent intent = data.getItemAt(index).getIntent(); 2393 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 2394 onDropExternal(new int[] { x, y }, info, layout, false); 2395 } else { 2396 if (widgets.size() == 1) { 2397 // If there is only one item, then go ahead and add and configure 2398 // that widget 2399 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 2400 final PendingAddWidgetInfo createInfo = 2401 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 2402 mLauncher.addAppWidgetFromDrop(createInfo, 2403 LauncherSettings.Favorites.CONTAINER_DESKTOP, mCurrentPage, null, pos); 2404 } else { 2405 // Show the widget picker dialog if there is more than one widget 2406 // that can handle this data type 2407 final InstallWidgetReceiver.WidgetListAdapter adapter = 2408 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 2409 data, widgets, layout, mCurrentPage, pos); 2410 final AlertDialog.Builder builder = 2411 new AlertDialog.Builder(mContext); 2412 builder.setAdapter(adapter, adapter); 2413 builder.setCancelable(true); 2414 builder.setTitle(mContext.getString( 2415 R.string.external_drop_widget_pick_title)); 2416 builder.setIcon(R.drawable.ic_no_applications); 2417 builder.show(); 2418 } 2419 } 2420 } 2421 return true; 2422 } 2423 case DragEvent.ACTION_DRAG_ENDED: 2424 // Hide the page outlines after the drop 2425 layout.onDragExit(); 2426 hideOutlines(); 2427 return true; 2428 } 2429 return super.onDragEvent(event); 2430 } 2431 2432 /* 2433 * 2434 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2435 * coordinate space. The argument xy is modified with the return result. 2436 * 2437 */ 2438 void mapPointFromSelfToChild(View v, float[] xy) { 2439 mapPointFromSelfToChild(v, xy, null); 2440 } 2441 2442 /* 2443 * 2444 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2445 * coordinate space. The argument xy is modified with the return result. 2446 * 2447 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2448 * computing it itself; we use this to avoid redundant matrix inversions in 2449 * findMatchingPageForDragOver 2450 * 2451 */ 2452 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2453 if (cachedInverseMatrix == null) { 2454 v.getMatrix().invert(mTempInverseMatrix); 2455 cachedInverseMatrix = mTempInverseMatrix; 2456 } 2457 xy[0] = xy[0] + mScrollX - v.getLeft(); 2458 xy[1] = xy[1] + mScrollY - v.getTop(); 2459 cachedInverseMatrix.mapPoints(xy); 2460 } 2461 2462 /* 2463 * Maps a point from the Workspace's coordinate system to another sibling view's. (Workspace 2464 * covers the full screen) 2465 */ 2466 void mapPointFromSelfToSibling(View v, float[] xy) { 2467 xy[0] = xy[0] - v.getLeft(); 2468 xy[1] = xy[1] - v.getTop(); 2469 } 2470 2471 /* 2472 * 2473 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2474 * the parent View's coordinate space. The argument xy is modified with the return result. 2475 * 2476 */ 2477 void mapPointFromChildToSelf(View v, float[] xy) { 2478 v.getMatrix().mapPoints(xy); 2479 xy[0] -= (mScrollX - v.getLeft()); 2480 xy[1] -= (mScrollY - v.getTop()); 2481 } 2482 2483 static private float squaredDistance(float[] point1, float[] point2) { 2484 float distanceX = point1[0] - point2[0]; 2485 float distanceY = point2[1] - point2[1]; 2486 return distanceX * distanceX + distanceY * distanceY; 2487 } 2488 2489 /* 2490 * 2491 * Returns true if the passed CellLayout cl overlaps with dragView 2492 * 2493 */ 2494 boolean overlaps(CellLayout cl, DragView dragView, 2495 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2496 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2497 final float[] draggedItemTopLeft = mTempDragCoordinates; 2498 draggedItemTopLeft[0] = dragViewX; 2499 draggedItemTopLeft[1] = dragViewY; 2500 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2501 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2502 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2503 2504 // Transform the dragged item's top left coordinates 2505 // to the CellLayout's local coordinates 2506 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2507 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2508 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2509 2510 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2511 // Transform the dragged item's bottom right coordinates 2512 // to the CellLayout's local coordinates 2513 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2514 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2515 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2516 2517 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2518 float overlap = (overlapRegionRight - overlapRegionLeft) * 2519 (overlapRegionBottom - overlapRegionTop); 2520 if (overlap > 0) { 2521 return true; 2522 } 2523 } 2524 } 2525 return false; 2526 } 2527 2528 /* 2529 * 2530 * This method returns the CellLayout that is currently being dragged to. In order to drag 2531 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2532 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2533 * 2534 * Return null if no CellLayout is currently being dragged over 2535 * 2536 */ 2537 private CellLayout findMatchingPageForDragOver( 2538 DragView dragView, float originX, float originY, boolean exact) { 2539 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2540 // with the item being dragged and then choose the one that's closest to the touch point 2541 final int screenCount = getChildCount(); 2542 CellLayout bestMatchingScreen = null; 2543 float smallestDistSoFar = Float.MAX_VALUE; 2544 2545 for (int i = 0; i < screenCount; i++) { 2546 CellLayout cl = (CellLayout) getChildAt(i); 2547 2548 final float[] touchXy = {originX, originY}; 2549 // Transform the touch coordinates to the CellLayout's local coordinates 2550 // If the touch point is within the bounds of the cell layout, we can return immediately 2551 cl.getMatrix().invert(mTempInverseMatrix); 2552 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2553 2554 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2555 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2556 return cl; 2557 } 2558 2559 if (!exact && overlaps(cl, dragView, (int) originX, (int) originY, mTempInverseMatrix)) { 2560 // Get the center of the cell layout in screen coordinates 2561 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2562 cellLayoutCenter[0] = cl.getWidth()/2; 2563 cellLayoutCenter[1] = cl.getHeight()/2; 2564 mapPointFromChildToSelf(cl, cellLayoutCenter); 2565 2566 touchXy[0] = originX; 2567 touchXy[1] = originY; 2568 2569 // Calculate the distance between the center of the CellLayout 2570 // and the touch point 2571 float dist = squaredDistance(touchXy, cellLayoutCenter); 2572 2573 if (dist < smallestDistSoFar) { 2574 smallestDistSoFar = dist; 2575 bestMatchingScreen = cl; 2576 } 2577 } 2578 } 2579 return bestMatchingScreen; 2580 } 2581 2582 // This is used to compute the visual center of the dragView. This point is then 2583 // used to visualize drop locations and determine where to drop an item. The idea is that 2584 // the visual center represents the user's interpretation of where the item is, and hence 2585 // is the appropriate point to use when determining drop location. 2586 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2587 DragView dragView, float[] recycle) { 2588 float res[]; 2589 if (recycle == null) { 2590 res = new float[2]; 2591 } else { 2592 res = recycle; 2593 } 2594 2595 // First off, the drag view has been shifted in a way that is not represented in the 2596 // x and y values or the x/yOffsets. Here we account for that shift. 2597 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2598 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2599 2600 // These represent the visual top and left of drag view if a dragRect was provided. 2601 // If a dragRect was not provided, then they correspond to the actual view left and 2602 // top, as the dragRect is in that case taken to be the entire dragView. 2603 // R.dimen.dragViewOffsetY. 2604 int left = x - xOffset; 2605 int top = y - yOffset; 2606 2607 // In order to find the visual center, we shift by half the dragRect 2608 res[0] = left + dragView.getDragRegion().width() / 2; 2609 res[1] = top + dragView.getDragRegion().height() / 2; 2610 2611 return res; 2612 } 2613 2614 private boolean isDragWidget(DragObject d) { 2615 return (d.dragInfo instanceof LauncherAppWidgetInfo || 2616 d.dragInfo instanceof PendingAddWidgetInfo); 2617 } 2618 private boolean isExternalDragWidget(DragObject d) { 2619 return d.dragSource != this && isDragWidget(d); 2620 } 2621 2622 public void onDragOver(DragObject d) { 2623 // Skip drag over events while we are dragging over side pages 2624 if (mInScrollArea) return; 2625 if (mIsSwitchingState) return; 2626 2627 Rect r = new Rect(); 2628 CellLayout layout = null; 2629 ItemInfo item = (ItemInfo) d.dragInfo; 2630 2631 // Ensure that we have proper spans for the item that we are dropping 2632 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2633 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2634 d.dragView, mDragViewVisualCenter); 2635 2636 // Identify whether we have dragged over a side page 2637 if (isSmall()) { 2638 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 2639 mLauncher.getHotseat().getHitRect(r); 2640 if (r.contains(d.x, d.y)) { 2641 layout = mLauncher.getHotseat().getLayout(); 2642 } 2643 } 2644 if (layout == null) { 2645 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, true); 2646 } 2647 if (layout != mDragTargetLayout) { 2648 // Cancel all intermediate folder states 2649 cleanupFolderCreation(d); 2650 2651 if (mDragTargetLayout != null) { 2652 mDragTargetLayout.setIsDragOverlapping(false); 2653 mDragTargetLayout.onDragExit(); 2654 } 2655 mDragTargetLayout = layout; 2656 if (mDragTargetLayout != null) { 2657 mDragTargetLayout.setIsDragOverlapping(true); 2658 mDragTargetLayout.onDragEnter(); 2659 } else { 2660 mLastDragOverView = null; 2661 } 2662 2663 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 2664 if (isInSpringLoadedMode) { 2665 if (mLauncher.isHotseatLayout(layout)) { 2666 mSpringLoadedDragController.cancel(); 2667 } else { 2668 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2669 } 2670 } 2671 } 2672 } else { 2673 // Test to see if we are over the hotseat otherwise just use the current page 2674 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 2675 mLauncher.getHotseat().getHitRect(r); 2676 if (r.contains(d.x, d.y)) { 2677 layout = mLauncher.getHotseat().getLayout(); 2678 } 2679 } 2680 if (layout == null) { 2681 layout = getCurrentDropLayout(); 2682 } 2683 if (layout != mDragTargetLayout) { 2684 if (mDragTargetLayout != null) { 2685 mDragTargetLayout.setIsDragOverlapping(false); 2686 mDragTargetLayout.onDragExit(); 2687 } 2688 mDragTargetLayout = layout; 2689 mDragTargetLayout.setIsDragOverlapping(true); 2690 mDragTargetLayout.onDragEnter(); 2691 } 2692 } 2693 2694 // Handle the drag over 2695 if (mDragTargetLayout != null) { 2696 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2697 2698 // We want the point to be mapped to the dragTarget. 2699 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2700 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2701 } else { 2702 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2703 } 2704 ItemInfo info = (ItemInfo) d.dragInfo; 2705 2706 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2707 (int) mDragViewVisualCenter[1], 1, 1, mDragTargetLayout, mTargetCell); 2708 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2709 mTargetCell[1]); 2710 2711 boolean userFolderPending = willCreateUserFolder(info, mDragTargetLayout, 2712 mTargetCell, false); 2713 boolean isOverFolder = dragOverView instanceof FolderIcon; 2714 if (dragOverView != mLastDragOverView) { 2715 cancelFolderCreation(); 2716 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2717 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2718 } 2719 } 2720 2721 if (userFolderPending && dragOverView != mLastDragOverView) { 2722 mFolderCreationAlarm.setOnAlarmListener(new 2723 FolderCreationAlarmListener(mDragTargetLayout, mTargetCell[0], mTargetCell[1])); 2724 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2725 } 2726 2727 if (dragOverView != mLastDragOverView && isOverFolder) { 2728 ((FolderIcon) dragOverView).onDragEnter(d.dragInfo); 2729 if (mDragTargetLayout != null) { 2730 mDragTargetLayout.clearDragOutlines(); 2731 } 2732 } 2733 mLastDragOverView = dragOverView; 2734 2735 if (!mCreateUserFolderOnDrop && !isOverFolder) { 2736 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2737 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2738 item.spanX, item.spanY, d.dragView.getDragVisualizeOffset(), 2739 d.dragView.getDragRegion()); 2740 } 2741 } 2742 } 2743 2744 private void cleanupFolderCreation(DragObject d) { 2745 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2746 mDragFolderRingAnimator.animateToNaturalState(); 2747 } 2748 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2749 if (d != null) { 2750 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2751 } 2752 } 2753 mFolderCreationAlarm.cancelAlarm(); 2754 } 2755 2756 private void cancelFolderCreation() { 2757 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2758 mDragFolderRingAnimator.animateToNaturalState(); 2759 } 2760 mCreateUserFolderOnDrop = false; 2761 mFolderCreationAlarm.cancelAlarm(); 2762 } 2763 2764 class FolderCreationAlarmListener implements OnAlarmListener { 2765 CellLayout layout; 2766 int cellX; 2767 int cellY; 2768 2769 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 2770 this.layout = layout; 2771 this.cellX = cellX; 2772 this.cellY = cellY; 2773 } 2774 2775 public void onAlarm(Alarm alarm) { 2776 if (mDragFolderRingAnimator == null) { 2777 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 2778 } 2779 mDragFolderRingAnimator.setCell(cellX, cellY); 2780 mDragFolderRingAnimator.setCellLayout(layout); 2781 mDragFolderRingAnimator.animateToAcceptState(); 2782 layout.showFolderAccept(mDragFolderRingAnimator); 2783 layout.clearDragOutlines(); 2784 mCreateUserFolderOnDrop = true; 2785 } 2786 } 2787 2788 @Override 2789 public void getHitRect(Rect outRect) { 2790 // We want the workspace to have the whole area of the display (it will find the correct 2791 // cell layout to drop to in the existing drag/drop logic. 2792 outRect.set(0, 0, mDisplayWidth, mDisplayHeight); 2793 } 2794 2795 /** 2796 * Add the item specified by dragInfo to the given layout. 2797 * @return true if successful 2798 */ 2799 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2800 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2801 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2802 return true; 2803 } 2804 mLauncher.showOutOfSpaceMessage(); 2805 return false; 2806 } 2807 2808 private void onDropExternal(int[] touchXY, Object dragInfo, 2809 CellLayout cellLayout, boolean insertAtFirst) { 2810 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 2811 } 2812 2813 /** 2814 * Drop an item that didn't originate on one of the workspace screens. 2815 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2816 * come from another app altogether. 2817 * 2818 * NOTE: This can also be called when we are outside of a drag event, when we want 2819 * to add an item to one of the workspace screens. 2820 */ 2821 private void onDropExternal(final int[] touchXY, final Object dragInfo, 2822 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 2823 final Runnable exitSpringLoadedRunnable = new Runnable() { 2824 @Override 2825 public void run() { 2826 mLauncher.exitSpringLoadedDragModeDelayed(true, false); 2827 } 2828 }; 2829 2830 ItemInfo info = (ItemInfo) dragInfo; 2831 int spanX = info.spanX; 2832 int spanY = info.spanY; 2833 if (mDragInfo != null) { 2834 spanX = mDragInfo.spanX; 2835 spanY = mDragInfo.spanY; 2836 } 2837 2838 final long container = mLauncher.isHotseatLayout(cellLayout) ? 2839 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2840 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2841 final int screen = indexOfChild(cellLayout); 2842 if (!mLauncher.isHotseatLayout(cellLayout) && screen != mCurrentPage 2843 && mState != State.SPRING_LOADED) { 2844 snapToPage(screen); 2845 } 2846 2847 if (info instanceof PendingAddItemInfo) { 2848 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 2849 2850 boolean findNearestVacantCell = true; 2851 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 2852 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 2853 cellLayout, mTargetCell); 2854 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, 2855 true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 2856 mDragTargetLayout, mTargetCell)) { 2857 findNearestVacantCell = false; 2858 } 2859 } 2860 if (findNearestVacantCell) { 2861 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], spanX, spanY, null, 2862 cellLayout, mTargetCell); 2863 } 2864 2865 Runnable onAnimationCompleteRunnable = new Runnable() { 2866 @Override 2867 public void run() { 2868 // When dragging and dropping from customization tray, we deal with creating 2869 // widgets/shortcuts/folders in a slightly different way 2870 switch (pendingInfo.itemType) { 2871 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 2872 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, 2873 container, screen, mTargetCell, null); 2874 break; 2875 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2876 mLauncher.processShortcutFromDrop(pendingInfo.componentName, 2877 container, screen, mTargetCell, null); 2878 break; 2879 default: 2880 throw new IllegalStateException("Unknown item type: " + 2881 pendingInfo.itemType); 2882 } 2883 cellLayout.onDragExit(); 2884 } 2885 }; 2886 2887 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 2888 // location and size on the home screen. 2889 int loc[] = new int[2]; 2890 cellLayout.cellToPoint(mTargetCell[0], mTargetCell[1], loc); 2891 2892 RectF r = new RectF(); 2893 cellLayout.cellToRect(mTargetCell[0], mTargetCell[1], spanX, spanY, r); 2894 setFinalTransitionTransform(cellLayout); 2895 float cellLayoutScale = 2896 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(cellLayout, loc); 2897 resetTransitionTransform(cellLayout); 2898 2899 float dragViewScale = r.width() / d.dragView.getMeasuredWidth(); 2900 // The animation will scale the dragView about its center, so we need to center about 2901 // the final location. 2902 loc[0] -= (d.dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 2903 loc[1] -= (d.dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 2904 2905 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, loc, 2906 dragViewScale * cellLayoutScale, onAnimationCompleteRunnable); 2907 } else { 2908 // This is for other drag/drop cases, like dragging from All Apps 2909 View view = null; 2910 2911 switch (info.itemType) { 2912 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 2913 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2914 if (info.container == NO_ID && info instanceof ApplicationInfo) { 2915 // Came from all apps -- make a copy 2916 info = new ShortcutInfo((ApplicationInfo) info); 2917 } 2918 view = mLauncher.createShortcut(R.layout.application, cellLayout, 2919 (ShortcutInfo) info); 2920 break; 2921 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 2922 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 2923 (FolderInfo) info, mIconCache); 2924 break; 2925 default: 2926 throw new IllegalStateException("Unknown item type: " + info.itemType); 2927 } 2928 2929 // First we find the cell nearest to point at which the item is 2930 // dropped, without any consideration to whether there is an item there. 2931 if (touchXY != null) { 2932 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 2933 cellLayout, mTargetCell); 2934 d.postAnimationRunnable = exitSpringLoadedRunnable; 2935 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, true, 2936 d.dragView, d.postAnimationRunnable)) { 2937 return; 2938 } 2939 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, d, true)) { 2940 return; 2941 } 2942 } 2943 2944 if (touchXY != null) { 2945 // when dragging and dropping, just find the closest free spot 2946 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], 1, 1, null, 2947 cellLayout, mTargetCell); 2948 } else { 2949 cellLayout.findCellForSpan(mTargetCell, 1, 1); 2950 } 2951 addInScreen(view, container, screen, mTargetCell[0], mTargetCell[1], info.spanX, 2952 info.spanY, insertAtFirst); 2953 cellLayout.onDropChild(view); 2954 cellLayout.animateDrop(); 2955 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2956 cellLayout.getChildrenLayout().measureChild(view); 2957 2958 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, 2959 lp.cellX, lp.cellY); 2960 2961 if (d.dragView != null) { 2962 // We wrap the animation call in the temporary set and reset of the current 2963 // cellLayout to its final transform -- this means we animate the drag view to 2964 // the correct final location. 2965 setFinalTransitionTransform(cellLayout); 2966 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 2967 exitSpringLoadedRunnable); 2968 resetTransitionTransform(cellLayout); 2969 } 2970 } 2971 } 2972 2973 public void setFinalTransitionTransform(CellLayout layout) { 2974 if (isSwitchingState()) { 2975 int index = indexOfChild(layout); 2976 mCurrentScaleX = layout.getScaleX(); 2977 mCurrentScaleY = layout.getScaleY(); 2978 mCurrentTranslationX = layout.getTranslationX(); 2979 mCurrentTranslationY = layout.getTranslationY(); 2980 mCurrentRotationY = layout.getRotationY(); 2981 layout.setScaleX(mNewScaleXs[index]); 2982 layout.setScaleY(mNewScaleYs[index]); 2983 layout.setTranslationX(mNewTranslationXs[index]); 2984 layout.setTranslationY(mNewTranslationYs[index]); 2985 layout.setRotationY(mNewRotationYs[index]); 2986 } 2987 } 2988 public void resetTransitionTransform(CellLayout layout) { 2989 if (isSwitchingState()) { 2990 mCurrentScaleX = layout.getScaleX(); 2991 mCurrentScaleY = layout.getScaleY(); 2992 mCurrentTranslationX = layout.getTranslationX(); 2993 mCurrentTranslationY = layout.getTranslationY(); 2994 mCurrentRotationY = layout.getRotationY(); 2995 layout.setScaleX(mCurrentScaleX); 2996 layout.setScaleY(mCurrentScaleY); 2997 layout.setTranslationX(mCurrentTranslationX); 2998 layout.setTranslationY(mCurrentTranslationY); 2999 layout.setRotationY(mCurrentRotationY); 3000 } 3001 } 3002 3003 /** 3004 * Return the current {@link CellLayout}, correctly picking the destination 3005 * screen while a scroll is in progress. 3006 */ 3007 public CellLayout getCurrentDropLayout() { 3008 return (CellLayout) getChildAt(mNextPage == INVALID_PAGE ? mCurrentPage : mNextPage); 3009 } 3010 3011 /** 3012 * Return the current CellInfo describing our current drag; this method exists 3013 * so that Launcher can sync this object with the correct info when the activity is created/ 3014 * destroyed 3015 * 3016 */ 3017 public CellLayout.CellInfo getDragInfo() { 3018 return mDragInfo; 3019 } 3020 3021 /** 3022 * Calculate the nearest cell where the given object would be dropped. 3023 * 3024 * pixelX and pixelY should be in the coordinate system of layout 3025 */ 3026 private int[] findNearestVacantArea(int pixelX, int pixelY, 3027 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 3028 return layout.findNearestVacantArea( 3029 pixelX, pixelY, spanX, spanY, ignoreView, recycle); 3030 } 3031 3032 /** 3033 * Calculate the nearest cell where the given object would be dropped. 3034 * 3035 * pixelX and pixelY should be in the coordinate system of layout 3036 */ 3037 private int[] findNearestArea(int pixelX, int pixelY, 3038 int spanX, int spanY, CellLayout layout, int[] recycle) { 3039 return layout.findNearestArea( 3040 pixelX, pixelY, spanX, spanY, recycle); 3041 } 3042 3043 void setup(DragController dragController) { 3044 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3045 mDragController = dragController; 3046 3047 // hardware layers on children are enabled on startup, but should be disabled until 3048 // needed 3049 updateChildrenLayersEnabled(); 3050 setWallpaperDimension(); 3051 } 3052 3053 /** 3054 * Called at the end of a drag which originated on the workspace. 3055 */ 3056 public void onDropCompleted(View target, DragObject d, boolean success) { 3057 if (success) { 3058 if (target != this) { 3059 if (mDragInfo != null) { 3060 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 3061 if (mDragInfo.cell instanceof DropTarget) { 3062 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 3063 } 3064 } 3065 } 3066 } else if (mDragInfo != null) { 3067 // NOTE: When 'success' is true, onDragExit is called by the DragController before 3068 // calling onDropCompleted(). We call it ourselves here, but maybe this should be 3069 // moved into DragController.cancelDrag(). 3070 doDragExit(null); 3071 CellLayout cellLayout; 3072 if (mLauncher.isHotseatLayout(target)) { 3073 cellLayout = mLauncher.getHotseat().getLayout(); 3074 } else { 3075 cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3076 } 3077 cellLayout.onDropChild(mDragInfo.cell); 3078 } 3079 if (d.cancelled && mDragInfo.cell != null) { 3080 mDragInfo.cell.setVisibility(VISIBLE); 3081 } 3082 mDragOutline = null; 3083 mDragInfo = null; 3084 } 3085 3086 public boolean isDropEnabled() { 3087 return true; 3088 } 3089 3090 @Override 3091 protected void onRestoreInstanceState(Parcelable state) { 3092 super.onRestoreInstanceState(state); 3093 Launcher.setScreen(mCurrentPage); 3094 } 3095 3096 @Override 3097 public void scrollLeft() { 3098 if (!isSmall() && !mIsSwitchingState) { 3099 super.scrollLeft(); 3100 } 3101 Folder openFolder = getOpenFolder(); 3102 if (openFolder != null) { 3103 openFolder.completeDragExit(); 3104 } 3105 } 3106 3107 @Override 3108 public void scrollRight() { 3109 if (!isSmall() && !mIsSwitchingState) { 3110 super.scrollRight(); 3111 } 3112 Folder openFolder = getOpenFolder(); 3113 if (openFolder != null) { 3114 openFolder.completeDragExit(); 3115 } 3116 } 3117 3118 @Override 3119 public boolean onEnterScrollArea(int x, int y, int direction) { 3120 // Ignore the scroll area if we are dragging over the hot seat 3121 if (mLauncher.getHotseat() != null) { 3122 Rect r = new Rect(); 3123 mLauncher.getHotseat().getHitRect(r); 3124 if (r.contains(x, y)) { 3125 return false; 3126 } 3127 } 3128 3129 boolean result = false; 3130 if (!isSmall() && !mIsSwitchingState) { 3131 mInScrollArea = true; 3132 3133 final int page = mCurrentPage + (direction == DragController.SCROLL_LEFT ? -1 : 1); 3134 final CellLayout layout = (CellLayout) getChildAt(page); 3135 cancelFolderCreation(); 3136 3137 if (layout != null) { 3138 // Exit the current layout and mark the overlapping layout 3139 if (mDragTargetLayout != null) { 3140 mDragTargetLayout.setIsDragOverlapping(false); 3141 mDragTargetLayout.onDragExit(); 3142 } 3143 mDragTargetLayout = layout; 3144 mDragTargetLayout.setIsDragOverlapping(true); 3145 3146 // Workspace is responsible for drawing the edge glow on adjacent pages, 3147 // so we need to redraw the workspace when this may have changed. 3148 invalidate(); 3149 result = true; 3150 } 3151 } 3152 return result; 3153 } 3154 3155 @Override 3156 public boolean onExitScrollArea() { 3157 boolean result = false; 3158 if (mInScrollArea) { 3159 if (mDragTargetLayout != null) { 3160 // Unmark the overlapping layout and re-enter the current layout 3161 mDragTargetLayout.setIsDragOverlapping(false); 3162 mDragTargetLayout = getCurrentDropLayout(); 3163 mDragTargetLayout.onDragEnter(); 3164 3165 // Workspace is responsible for drawing the edge glow on adjacent pages, 3166 // so we need to redraw the workspace when this may have changed. 3167 invalidate(); 3168 result = true; 3169 } 3170 mInScrollArea = false; 3171 } 3172 return result; 3173 } 3174 3175 private void onResetScrollArea() { 3176 if (mDragTargetLayout != null) { 3177 // Unmark the overlapping layout 3178 mDragTargetLayout.setIsDragOverlapping(false); 3179 3180 // Workspace is responsible for drawing the edge glow on adjacent pages, 3181 // so we need to redraw the workspace when this may have changed. 3182 invalidate(); 3183 } 3184 mInScrollArea = false; 3185 } 3186 3187 /** 3188 * Returns a specific CellLayout 3189 */ 3190 CellLayout getParentCellLayoutForView(View v) { 3191 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3192 for (CellLayout layout : layouts) { 3193 if (layout.getChildrenLayout().indexOfChild(v) > -1) { 3194 return layout; 3195 } 3196 } 3197 return null; 3198 } 3199 3200 /** 3201 * Returns a list of all the CellLayouts in the workspace. 3202 */ 3203 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3204 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3205 int screenCount = getChildCount(); 3206 for (int screen = 0; screen < screenCount; screen++) { 3207 layouts.add(((CellLayout) getChildAt(screen))); 3208 } 3209 if (mLauncher.getHotseat() != null) { 3210 layouts.add(mLauncher.getHotseat().getLayout()); 3211 } 3212 return layouts; 3213 } 3214 3215 /** 3216 * We should only use this to search for specific children. Do not use this method to modify 3217 * CellLayoutChildren directly. 3218 */ 3219 ArrayList<CellLayoutChildren> getWorkspaceAndHotseatCellLayoutChildren() { 3220 ArrayList<CellLayoutChildren> childrenLayouts = new ArrayList<CellLayoutChildren>(); 3221 int screenCount = getChildCount(); 3222 for (int screen = 0; screen < screenCount; screen++) { 3223 childrenLayouts.add(((CellLayout) getChildAt(screen)).getChildrenLayout()); 3224 } 3225 if (mLauncher.getHotseat() != null) { 3226 childrenLayouts.add(mLauncher.getHotseat().getLayout().getChildrenLayout()); 3227 } 3228 return childrenLayouts; 3229 } 3230 3231 public Folder getFolderForTag(Object tag) { 3232 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3233 for (CellLayoutChildren layout: childrenLayouts) { 3234 int count = layout.getChildCount(); 3235 for (int i = 0; i < count; i++) { 3236 View child = layout.getChildAt(i); 3237 if (child instanceof Folder) { 3238 Folder f = (Folder) child; 3239 if (f.getInfo() == tag && f.getInfo().opened) { 3240 return f; 3241 } 3242 } 3243 } 3244 } 3245 return null; 3246 } 3247 3248 public View getViewForTag(Object tag) { 3249 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3250 for (CellLayoutChildren layout: childrenLayouts) { 3251 int count = layout.getChildCount(); 3252 for (int i = 0; i < count; i++) { 3253 View child = layout.getChildAt(i); 3254 if (child.getTag() == tag) { 3255 return child; 3256 } 3257 } 3258 } 3259 return null; 3260 } 3261 3262 void clearDropTargets() { 3263 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3264 for (CellLayoutChildren layout: childrenLayouts) { 3265 int childCount = layout.getChildCount(); 3266 for (int j = 0; j < childCount; j++) { 3267 View v = layout.getChildAt(j); 3268 if (v instanceof DropTarget) { 3269 mDragController.removeDropTarget((DropTarget) v); 3270 } 3271 } 3272 } 3273 } 3274 3275 void removeItems(final ArrayList<ApplicationInfo> apps) { 3276 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3277 3278 final HashSet<String> packageNames = new HashSet<String>(); 3279 final int appCount = apps.size(); 3280 for (int i = 0; i < appCount; i++) { 3281 packageNames.add(apps.get(i).componentName.getPackageName()); 3282 } 3283 3284 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3285 for (final CellLayout layoutParent: cellLayouts) { 3286 final ViewGroup layout = layoutParent.getChildrenLayout(); 3287 3288 // Avoid ANRs by treating each screen separately 3289 post(new Runnable() { 3290 public void run() { 3291 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3292 childrenToRemove.clear(); 3293 3294 int childCount = layout.getChildCount(); 3295 for (int j = 0; j < childCount; j++) { 3296 final View view = layout.getChildAt(j); 3297 Object tag = view.getTag(); 3298 3299 if (tag instanceof ShortcutInfo) { 3300 final ShortcutInfo info = (ShortcutInfo) tag; 3301 final Intent intent = info.intent; 3302 final ComponentName name = intent.getComponent(); 3303 3304 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3305 for (String packageName: packageNames) { 3306 if (packageName.equals(name.getPackageName())) { 3307 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3308 childrenToRemove.add(view); 3309 } 3310 } 3311 } 3312 } else if (tag instanceof FolderInfo) { 3313 final FolderInfo info = (FolderInfo) tag; 3314 final ArrayList<ShortcutInfo> contents = info.contents; 3315 final int contentsCount = contents.size(); 3316 final ArrayList<ShortcutInfo> appsToRemoveFromFolder = 3317 new ArrayList<ShortcutInfo>(); 3318 3319 for (int k = 0; k < contentsCount; k++) { 3320 final ShortcutInfo appInfo = contents.get(k); 3321 final Intent intent = appInfo.intent; 3322 final ComponentName name = intent.getComponent(); 3323 3324 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3325 for (String packageName: packageNames) { 3326 if (packageName.equals(name.getPackageName())) { 3327 appsToRemoveFromFolder.add(appInfo); 3328 } 3329 } 3330 } 3331 } 3332 for (ShortcutInfo item: appsToRemoveFromFolder) { 3333 info.remove(item); 3334 LauncherModel.deleteItemFromDatabase(mLauncher, item); 3335 } 3336 } else if (tag instanceof LauncherAppWidgetInfo) { 3337 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3338 final AppWidgetProviderInfo provider = 3339 widgets.getAppWidgetInfo(info.appWidgetId); 3340 if (provider != null) { 3341 for (String packageName: packageNames) { 3342 if (packageName.equals(provider.provider.getPackageName())) { 3343 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3344 childrenToRemove.add(view); 3345 } 3346 } 3347 } 3348 } 3349 } 3350 3351 childCount = childrenToRemove.size(); 3352 for (int j = 0; j < childCount; j++) { 3353 View child = childrenToRemove.get(j); 3354 // Note: We can not remove the view directly from CellLayoutChildren as this 3355 // does not re-mark the spaces as unoccupied. 3356 layoutParent.removeViewInLayout(child); 3357 if (child instanceof DropTarget) { 3358 mDragController.removeDropTarget((DropTarget)child); 3359 } 3360 } 3361 3362 if (childCount > 0) { 3363 layout.requestLayout(); 3364 layout.invalidate(); 3365 } 3366 } 3367 }); 3368 } 3369 } 3370 3371 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3372 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3373 for (CellLayoutChildren layout: childrenLayouts) { 3374 int childCount = layout.getChildCount(); 3375 for (int j = 0; j < childCount; j++) { 3376 final View view = layout.getChildAt(j); 3377 Object tag = view.getTag(); 3378 if (tag instanceof ShortcutInfo) { 3379 ShortcutInfo info = (ShortcutInfo)tag; 3380 // We need to check for ACTION_MAIN otherwise getComponent() might 3381 // return null for some shortcuts (for instance, for shortcuts to 3382 // web pages.) 3383 final Intent intent = info.intent; 3384 final ComponentName name = intent.getComponent(); 3385 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3386 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3387 final int appCount = apps.size(); 3388 for (int k = 0; k < appCount; k++) { 3389 ApplicationInfo app = apps.get(k); 3390 if (app.componentName.equals(name)) { 3391 info.setIcon(mIconCache.getIcon(info.intent)); 3392 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 3393 new FastBitmapDrawable(info.getIcon(mIconCache)), 3394 null, null); 3395 } 3396 } 3397 } 3398 } 3399 } 3400 } 3401 } 3402 3403 void moveToDefaultScreen(boolean animate) { 3404 if (!isSmall()) { 3405 if (animate) { 3406 snapToPage(mDefaultPage); 3407 } else { 3408 setCurrentPage(mDefaultPage); 3409 } 3410 } 3411 getChildAt(mDefaultPage).requestFocus(); 3412 } 3413 3414 @Override 3415 public void syncPages() { 3416 } 3417 3418 @Override 3419 public void syncPageItems(int page, boolean immediate) { 3420 } 3421 3422 @Override 3423 protected String getCurrentPageDescription() { 3424 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 3425 return String.format(mContext.getString(R.string.workspace_scroll_format), 3426 page + 1, getChildCount()); 3427 } 3428 3429 public void getLocationInDragLayer(int[] loc) { 3430 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 3431 } 3432 3433 void showDockDivider(boolean immediately) { 3434 final ViewGroup parent = (ViewGroup) getParent(); 3435 final View qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3436 final View dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3437 if (qsbDivider != null && dockDivider != null) { 3438 qsbDivider.setVisibility(View.VISIBLE); 3439 dockDivider.setVisibility(View.VISIBLE); 3440 if (mDividerAnimator != null) { 3441 mDividerAnimator.cancel(); 3442 mDividerAnimator = null; 3443 } 3444 if (immediately) { 3445 qsbDivider.setAlpha(1f); 3446 dockDivider.setAlpha(1f); 3447 } else { 3448 mDividerAnimator = new AnimatorSet(); 3449 mDividerAnimator.playTogether(ObjectAnimator.ofFloat(qsbDivider, "alpha", 1f), 3450 ObjectAnimator.ofFloat(dockDivider, "alpha", 1f)); 3451 mDividerAnimator.setDuration(sScrollIndicatorFadeInDuration); 3452 mDividerAnimator.start(); 3453 } 3454 } 3455 } 3456 3457 void hideDockDivider(boolean immediately) { 3458 final ViewGroup parent = (ViewGroup) getParent(); 3459 final View qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3460 final View dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3461 if (qsbDivider != null && dockDivider != null) { 3462 if (mDividerAnimator != null) { 3463 mDividerAnimator.cancel(); 3464 mDividerAnimator = null; 3465 } 3466 if (immediately) { 3467 qsbDivider.setVisibility(View.GONE); 3468 dockDivider.setVisibility(View.GONE); 3469 qsbDivider.setAlpha(0f); 3470 dockDivider.setAlpha(0f); 3471 } else { 3472 mDividerAnimator = new AnimatorSet(); 3473 mDividerAnimator.playTogether(ObjectAnimator.ofFloat(qsbDivider, "alpha", 0f), 3474 ObjectAnimator.ofFloat(dockDivider, "alpha", 0f)); 3475 mDividerAnimator.addListener(new AnimatorListenerAdapter() { 3476 private boolean cancelled = false; 3477 @Override 3478 public void onAnimationCancel(android.animation.Animator animation) { 3479 cancelled = true; 3480 } 3481 @Override 3482 public void onAnimationEnd(android.animation.Animator animation) { 3483 if (!cancelled) { 3484 qsbDivider.setVisibility(View.GONE); 3485 dockDivider.setVisibility(View.GONE); 3486 } 3487 } 3488 }); 3489 mDividerAnimator.setDuration(sScrollIndicatorFadeOutDuration); 3490 mDividerAnimator.start(); 3491 } 3492 } 3493 } 3494} 3495