Workspace.java revision 81efbad05e0ce69b06d7323749ef2e200b84b98e
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 private float mOverscrollFade = 0; 179 180 // Paint used to draw external drop outline 181 private final Paint mExternalDragOutlinePaint = new Paint(); 182 183 // Camera and Matrix used to determine the final position of a neighboring CellLayout 184 private final Matrix mMatrix = new Matrix(); 185 private final Camera mCamera = new Camera(); 186 private final float mTempFloat2[] = new float[2]; 187 188 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 189 int mWallpaperWidth; 190 int mWallpaperHeight; 191 WallpaperOffsetInterpolator mWallpaperOffset; 192 boolean mUpdateWallpaperOffsetImmediately = false; 193 private Runnable mDelayedResizeRunnable; 194 private int mDisplayWidth; 195 private int mDisplayHeight; 196 private int mWallpaperTravelWidth; 197 198 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 199 private static final int FOLDER_CREATION_TIMEOUT = 250; 200 private final Alarm mFolderCreationAlarm = new Alarm(); 201 private FolderRingAnimator mDragFolderRingAnimator = null; 202 private View mLastDragOverView = null; 203 private boolean mCreateUserFolderOnDrop = false; 204 205 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 206 private float mXDown; 207 private float mYDown; 208 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 209 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 210 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 211 212 // These variables are used for storing the initial and final values during workspace animations 213 private int mSavedScrollX; 214 private float mSavedRotationY; 215 private float mSavedTranslationX; 216 private float mCurrentScaleX; 217 private float mCurrentScaleY; 218 private float mCurrentRotationY; 219 private float mCurrentTranslationX; 220 private float mCurrentTranslationY; 221 private float[] mOldTranslationXs; 222 private float[] mOldTranslationYs; 223 private float[] mOldScaleXs; 224 private float[] mOldScaleYs; 225 private float[] mOldBackgroundAlphas; 226 private float[] mOldBackgroundAlphaMultipliers; 227 private float[] mOldAlphas; 228 private float[] mOldRotationYs; 229 private float[] mNewTranslationXs; 230 private float[] mNewTranslationYs; 231 private float[] mNewScaleXs; 232 private float[] mNewScaleYs; 233 private float[] mNewBackgroundAlphas; 234 private float[] mNewBackgroundAlphaMultipliers; 235 private float[] mNewAlphas; 236 private float[] mNewRotationYs; 237 private float mTransitionProgress; 238 239 /** 240 * Used to inflate the Workspace from XML. 241 * 242 * @param context The application's context. 243 * @param attrs The attributes set containing the Workspace's customization values. 244 */ 245 public Workspace(Context context, AttributeSet attrs) { 246 this(context, attrs, 0); 247 } 248 249 /** 250 * Used to inflate the Workspace from XML. 251 * 252 * @param context The application's context. 253 * @param attrs The attributes set containing the Workspace's customization values. 254 * @param defStyle Unused. 255 */ 256 public Workspace(Context context, AttributeSet attrs, int defStyle) { 257 super(context, attrs, defStyle); 258 mContentIsRefreshable = false; 259 260 // With workspace, data is available straight from the get-go 261 setDataIsReady(); 262 263 mFadeInAdjacentScreens = 264 getResources().getBoolean(R.bool.config_workspaceFadeAdjacentScreens); 265 mWallpaperManager = WallpaperManager.getInstance(context); 266 267 int cellCountX = DEFAULT_CELL_COUNT_X; 268 int cellCountY = DEFAULT_CELL_COUNT_Y; 269 270 TypedArray a = context.obtainStyledAttributes(attrs, 271 R.styleable.Workspace, defStyle, 0); 272 273 final Resources res = context.getResources(); 274 if (LauncherApplication.isScreenLarge()) { 275 // Determine number of rows/columns dynamically 276 // TODO: This code currently fails on tablets with an aspect ratio < 1.3. 277 // Around that ratio we should make cells the same size in portrait and 278 // landscape 279 TypedArray actionBarSizeTypedArray = 280 context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize }); 281 final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); 282 final float systemBarHeight = res.getDimension(R.dimen.status_bar_height); 283 final float smallestScreenDim = res.getConfiguration().smallestScreenWidthDp; 284 285 cellCountX = 1; 286 while (CellLayout.widthInPortrait(res, cellCountX + 1) <= smallestScreenDim) { 287 cellCountX++; 288 } 289 290 cellCountY = 1; 291 while (actionBarHeight + CellLayout.heightInLandscape(res, cellCountY + 1) 292 <= smallestScreenDim - systemBarHeight) { 293 cellCountY++; 294 } 295 } 296 297 mSpringLoadedShrinkFactor = 298 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 299 mDragViewMultiplyColor = res.getColor(R.color.drag_view_multiply_color); 300 301 // if the value is manually specified, use that instead 302 cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX); 303 cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY); 304 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 305 a.recycle(); 306 307 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 308 setHapticFeedbackEnabled(false); 309 310 mLauncher = (Launcher) context; 311 initWorkspace(); 312 313 // Disable multitouch across the workspace/all apps/customize tray 314 setMotionEventSplittingEnabled(true); 315 } 316 317 public void buildPageHardwareLayers() { 318 if (getWindowToken() != null) { 319 final int childCount = getChildCount(); 320 for (int i = 0; i < childCount; i++) { 321 CellLayout cl = (CellLayout) getChildAt(i); 322 cl.buildChildrenLayer(); 323 } 324 } 325 } 326 327 public void onDragStart(DragSource source, Object info, int dragAction) { 328 mIsDragOccuring = true; 329 updateChildrenLayersEnabled(); 330 mLauncher.lockScreenOrientationOnLargeUI(); 331 } 332 333 public void onDragEnd() { 334 mIsDragOccuring = false; 335 updateChildrenLayersEnabled(); 336 mLauncher.unlockScreenOrientationOnLargeUI(); 337 } 338 339 /** 340 * Initializes various states for this workspace. 341 */ 342 protected void initWorkspace() { 343 Context context = getContext(); 344 mCurrentPage = mDefaultPage; 345 Launcher.setScreen(mCurrentPage); 346 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 347 mIconCache = app.getIconCache(); 348 mExternalDragOutlinePaint.setAntiAlias(true); 349 setWillNotDraw(false); 350 setChildrenDrawnWithCacheEnabled(true); 351 352 try { 353 final Resources res = getResources(); 354 mBackground = res.getDrawable(R.drawable.apps_customize_bg); 355 } catch (Resources.NotFoundException e) { 356 // In this case, we will skip drawing background protection 357 } 358 359 mChangeStateAnimationListener = new AnimatorListenerAdapter() { 360 @Override 361 public void onAnimationStart(Animator animation) { 362 mIsSwitchingState = true; 363 } 364 365 @Override 366 public void onAnimationEnd(Animator animation) { 367 mIsSwitchingState = false; 368 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 369 mAnimator = null; 370 updateChildrenLayersEnabled(); 371 } 372 }; 373 374 mSnapVelocity = 600; 375 mWallpaperOffset = new WallpaperOffsetInterpolator(); 376 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 377 mDisplayWidth = display.getWidth(); 378 mDisplayHeight = display.getHeight(); 379 mWallpaperTravelWidth = (int) (mDisplayWidth * 380 wallpaperTravelToScreenWidthRatio(mDisplayWidth, mDisplayHeight)); 381 } 382 383 @Override 384 protected int getScrollMode() { 385 return SmoothPagedView.X_LARGE_MODE; 386 } 387 388 @Override 389 protected void onViewAdded(View child) { 390 super.onViewAdded(child); 391 if (!(child instanceof CellLayout)) { 392 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 393 } 394 CellLayout cl = ((CellLayout) child); 395 cl.setOnInterceptTouchListener(this); 396 cl.setClickable(true); 397 cl.enableHardwareLayers(); 398 } 399 400 /** 401 * @return The open folder on the current screen, or null if there is none 402 */ 403 Folder getOpenFolder() { 404 DragLayer dragLayer = mLauncher.getDragLayer(); 405 int count = dragLayer.getChildCount(); 406 for (int i = 0; i < count; i++) { 407 View child = dragLayer.getChildAt(i); 408 if (child instanceof Folder) { 409 Folder folder = (Folder) child; 410 if (folder.getInfo().opened) 411 return folder; 412 } 413 } 414 return null; 415 } 416 417 boolean isTouchActive() { 418 return mTouchState != TOUCH_STATE_REST; 419 } 420 421 /** 422 * Adds the specified child in the specified screen. The position and dimension of 423 * the child are defined by x, y, spanX and spanY. 424 * 425 * @param child The child to add in one of the workspace's screens. 426 * @param screen The screen in which to add the child. 427 * @param x The X position of the child in the screen's grid. 428 * @param y The Y position of the child in the screen's grid. 429 * @param spanX The number of cells spanned horizontally by the child. 430 * @param spanY The number of cells spanned vertically by the child. 431 */ 432 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY) { 433 addInScreen(child, container, screen, x, y, spanX, spanY, false); 434 } 435 436 /** 437 * Adds the specified child in the specified screen. The position and dimension of 438 * the child are defined by x, y, spanX and spanY. 439 * 440 * @param child The child to add in one of the workspace's screens. 441 * @param screen The screen in which to add the child. 442 * @param x The X position of the child in the screen's grid. 443 * @param y The Y position of the child in the screen's grid. 444 * @param spanX The number of cells spanned horizontally by the child. 445 * @param spanY The number of cells spanned vertically by the child. 446 * @param insert When true, the child is inserted at the beginning of the children list. 447 */ 448 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY, 449 boolean insert) { 450 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 451 if (screen < 0 || screen >= getChildCount()) { 452 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 453 + " (was " + screen + "); skipping child"); 454 return; 455 } 456 } 457 458 final CellLayout layout; 459 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 460 layout = mLauncher.getHotseat().getLayout(); 461 child.setOnKeyListener(null); 462 463 // Hide folder title in the hotseat 464 if (child instanceof FolderIcon) { 465 ((FolderIcon) child).setTextVisible(false); 466 } 467 468 if (screen < 0) { 469 screen = mLauncher.getHotseat().getOrderInHotseat(x, y); 470 } else { 471 // Note: We do this to ensure that the hotseat is always laid out in the orientation 472 // of the hotseat in order regardless of which orientation they were added 473 x = mLauncher.getHotseat().getCellXFromOrder(screen); 474 y = mLauncher.getHotseat().getCellYFromOrder(screen); 475 } 476 } else { 477 // Show folder title if not in the hotseat 478 if (child instanceof FolderIcon) { 479 ((FolderIcon) child).setTextVisible(true); 480 } 481 482 layout = (CellLayout) getChildAt(screen); 483 child.setOnKeyListener(new IconKeyEventListener()); 484 } 485 486 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 487 if (lp == null) { 488 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 489 } else { 490 lp.cellX = x; 491 lp.cellY = y; 492 lp.cellHSpan = spanX; 493 lp.cellVSpan = spanY; 494 } 495 496 if (spanX < 0 && spanY < 0) { 497 lp.isLockedToGrid = false; 498 } 499 500 // Get the canonical child id to uniquely represent this view in this screen 501 int childId = LauncherModel.getCellLayoutChildId(container, screen, x, y, spanX, spanY); 502 boolean markCellsAsOccupied = !(child instanceof Folder); 503 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 504 // TODO: This branch occurs when the workspace is adding views 505 // outside of the defined grid 506 // maybe we should be deleting these items from the LauncherModel? 507 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 508 } 509 510 if (!(child instanceof Folder)) { 511 child.setHapticFeedbackEnabled(false); 512 child.setOnLongClickListener(mLongClickListener); 513 } 514 if (child instanceof DropTarget) { 515 mDragController.addDropTarget((DropTarget) child); 516 } 517 } 518 519 /** 520 * Check if the point (x, y) hits a given page. 521 */ 522 private boolean hitsPage(int index, float x, float y) { 523 final View page = getChildAt(index); 524 if (page != null) { 525 float[] localXY = { x, y }; 526 mapPointFromSelfToChild(page, localXY); 527 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 528 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 529 } 530 return false; 531 } 532 533 @Override 534 protected boolean hitsPreviousPage(float x, float y) { 535 // mNextPage is set to INVALID_PAGE whenever we are stationary. 536 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 537 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 538 539 // Only allow tap to next page on large devices, where there's significant margin outside 540 // the active workspace 541 return LauncherApplication.isScreenLarge() && hitsPage(current - 1, x, y); 542 } 543 544 @Override 545 protected boolean hitsNextPage(float x, float y) { 546 // mNextPage is set to INVALID_PAGE whenever we are stationary. 547 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 548 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 549 550 // Only allow tap to next page on large devices, where there's significant margin outside 551 // the active workspace 552 return LauncherApplication.isScreenLarge() && hitsPage(current + 1, x, y); 553 } 554 555 /** 556 * Called directly from a CellLayout (not by the framework), after we've been added as a 557 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 558 * that it should intercept touch events, which is not something that is normally supported. 559 */ 560 @Override 561 public boolean onTouch(View v, MotionEvent event) { 562 return (isSmall() || mIsSwitchingState); 563 } 564 565 public boolean isSwitchingState() { 566 return mIsSwitchingState; 567 } 568 569 protected void onWindowVisibilityChanged (int visibility) { 570 mLauncher.onWindowVisibilityChanged(visibility); 571 } 572 573 @Override 574 public boolean dispatchUnhandledMove(View focused, int direction) { 575 if (isSmall() || mIsSwitchingState) { 576 // when the home screens are shrunken, shouldn't allow side-scrolling 577 return false; 578 } 579 return super.dispatchUnhandledMove(focused, direction); 580 } 581 582 @Override 583 public boolean onInterceptTouchEvent(MotionEvent ev) { 584 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 585 case MotionEvent.ACTION_DOWN: 586 mXDown = ev.getX(); 587 mYDown = ev.getY(); 588 break; 589 case MotionEvent.ACTION_POINTER_UP: 590 case MotionEvent.ACTION_UP: 591 if (mTouchState == TOUCH_STATE_REST) { 592 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 593 if (!currentPage.lastDownOnOccupiedCell()) { 594 onWallpaperTap(ev); 595 } 596 } 597 } 598 return super.onInterceptTouchEvent(ev); 599 } 600 601 @Override 602 protected void determineScrollingStart(MotionEvent ev) { 603 if (!isSmall() && !mIsSwitchingState) { 604 float deltaX = Math.abs(ev.getX() - mXDown); 605 float deltaY = Math.abs(ev.getY() - mYDown); 606 607 if (Float.compare(deltaX, 0f) == 0) return; 608 609 float slope = deltaY / deltaX; 610 float theta = (float) Math.atan(slope); 611 612 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 613 cancelCurrentPageLongPress(); 614 } 615 616 if (theta > MAX_SWIPE_ANGLE) { 617 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 618 return; 619 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 620 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 621 // increase the touch slop to make it harder to begin scrolling the workspace. This 622 // results in vertically scrolling widgets to more easily. The higher the angle, the 623 // more we increase touch slop. 624 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 625 float extraRatio = (float) 626 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 627 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 628 } else { 629 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 630 super.determineScrollingStart(ev); 631 } 632 } 633 } 634 635 @Override 636 protected boolean isScrollingIndicatorEnabled() { 637 return mState != State.SPRING_LOADED; 638 } 639 640 protected void onPageBeginMoving() { 641 super.onPageBeginMoving(); 642 643 if (isHardwareAccelerated()) { 644 updateChildrenLayersEnabled(); 645 } else { 646 if (mNextPage != INVALID_PAGE) { 647 // we're snapping to a particular screen 648 enableChildrenCache(mCurrentPage, mNextPage); 649 } else { 650 // this is when user is actively dragging a particular screen, they might 651 // swipe it either left or right (but we won't advance by more than one screen) 652 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 653 } 654 } 655 656 // Only show page outlines as we pan if we are on large screen 657 if (LauncherApplication.isScreenLarge()) { 658 showOutlines(); 659 } 660 } 661 662 protected void onPageEndMoving() { 663 super.onPageEndMoving(); 664 665 if (isHardwareAccelerated()) { 666 updateChildrenLayersEnabled(); 667 } else { 668 clearChildrenCache(); 669 } 670 671 // Hide the outlines, as long as we're not dragging 672 if (!mDragController.dragging()) { 673 // Only hide page outlines as we pan if we are on large screen 674 if (LauncherApplication.isScreenLarge()) { 675 hideOutlines(); 676 } 677 } 678 mOverScrollMaxBackgroundAlpha = 0.0f; 679 mOverScrollPageIndex = -1; 680 681 if (mDelayedResizeRunnable != null) { 682 mDelayedResizeRunnable.run(); 683 mDelayedResizeRunnable = null; 684 } 685 } 686 687 @Override 688 protected void notifyPageSwitchListener() { 689 super.notifyPageSwitchListener(); 690 Launcher.setScreen(mCurrentPage); 691 }; 692 693 // As a ratio of screen height, the total distance we want the parallax effect to span 694 // horizontally 695 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 696 float aspectRatio = width / (float) height; 697 698 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 699 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 700 // We will use these two data points to extrapolate how much the wallpaper parallax effect 701 // to span (ie travel) at any aspect ratio: 702 703 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 704 final float ASPECT_RATIO_PORTRAIT = 10/16f; 705 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 706 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 707 708 // To find out the desired width at different aspect ratios, we use the following two 709 // formulas, where the coefficient on x is the aspect ratio (width/height): 710 // (16/10)x + y = 1.5 711 // (10/16)x + y = 1.2 712 // We solve for x and y and end up with a final formula: 713 final float x = 714 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 715 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 716 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 717 return x * aspectRatio + y; 718 } 719 720 // The range of scroll values for Workspace 721 private int getScrollRange() { 722 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 723 } 724 725 protected void setWallpaperDimension() { 726 DisplayMetrics displayMetrics = new DisplayMetrics(); 727 mLauncher.getWindowManager().getDefaultDisplay().getRealMetrics(displayMetrics); 728 final int maxDim = Math.max(displayMetrics.widthPixels, displayMetrics.heightPixels); 729 final int minDim = Math.min(displayMetrics.widthPixels, displayMetrics.heightPixels); 730 731 // We need to ensure that there is enough extra space in the wallpaper for the intended 732 // parallax effects 733 if (LauncherApplication.isScreenLarge()) { 734 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 735 mWallpaperHeight = maxDim; 736 } else { 737 mWallpaperWidth = Math.max((int) (minDim * WALLPAPER_SCREENS_SPAN), maxDim); 738 mWallpaperHeight = maxDim; 739 } 740 new Thread("setWallpaperDimension") { 741 public void run() { 742 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 743 } 744 }.start(); 745 } 746 747 public void setVerticalWallpaperOffset(float offset) { 748 mWallpaperOffset.setFinalY(offset); 749 } 750 public float getVerticalWallpaperOffset() { 751 return mWallpaperOffset.getCurrY(); 752 } 753 public void setHorizontalWallpaperOffset(float offset) { 754 mWallpaperOffset.setFinalX(offset); 755 } 756 public float getHorizontalWallpaperOffset() { 757 return mWallpaperOffset.getCurrX(); 758 } 759 760 private float wallpaperOffsetForCurrentScroll() { 761 // The wallpaper travel width is how far, from left to right, the wallpaper will move 762 // at this orientation. On tablets in portrait mode we don't move all the way to the 763 // edges of the wallpaper, or otherwise the parallax effect would be too strong. 764 int wallpaperTravelWidth = mWallpaperWidth; 765 if (LauncherApplication.isScreenLarge()) { 766 wallpaperTravelWidth = mWallpaperTravelWidth; 767 } 768 769 // Set wallpaper offset steps (1 / (number of screens - 1)) 770 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f); 771 772 // For the purposes of computing the scrollRange and overScrollOffset, we assume 773 // that mLayoutScale is 1. This means that when we're in spring-loaded mode, 774 // there's no discrepancy between the wallpaper offset for a given page. 775 float layoutScale = mLayoutScale; 776 mLayoutScale = 1f; 777 int scrollRange = getScrollRange(); 778 779 // Again, we adjust the wallpaper offset to be consistent between values of mLayoutScale 780 float adjustedScrollX = Math.max(0, Math.min(mScrollX, mMaxScrollX)); 781 adjustedScrollX *= mWallpaperScrollRatio; 782 mLayoutScale = layoutScale; 783 784 float scrollProgress = 785 adjustedScrollX / (float) scrollRange; 786 float offsetInDips = wallpaperTravelWidth * scrollProgress + 787 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 788 float offset = offsetInDips / (float) mWallpaperWidth; 789 return offset; 790 } 791 private void syncWallpaperOffsetWithScroll() { 792 final boolean enableWallpaperEffects = isHardwareAccelerated(); 793 if (enableWallpaperEffects) { 794 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 795 } 796 } 797 798 public void updateWallpaperOffsetImmediately() { 799 mUpdateWallpaperOffsetImmediately = true; 800 } 801 802 private void updateWallpaperOffsets() { 803 boolean updateNow = false; 804 boolean keepUpdating = true; 805 if (mUpdateWallpaperOffsetImmediately) { 806 updateNow = true; 807 keepUpdating = false; 808 mWallpaperOffset.jumpToFinal(); 809 mUpdateWallpaperOffsetImmediately = false; 810 } else { 811 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 812 } 813 if (updateNow) { 814 if (mWindowToken != null) { 815 mWallpaperManager.setWallpaperOffsets(mWindowToken, 816 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 817 } 818 } 819 if (keepUpdating) { 820 fastInvalidate(); 821 } 822 } 823 824 @Override 825 protected void updateCurrentPageScroll() { 826 super.updateCurrentPageScroll(); 827 computeWallpaperScrollRatio(mCurrentPage); 828 } 829 830 @Override 831 protected void snapToPage(int whichPage) { 832 super.snapToPage(whichPage); 833 computeWallpaperScrollRatio(whichPage); 834 } 835 836 private void computeWallpaperScrollRatio(int page) { 837 // Here, we determine what the desired scroll would be with and without a layout scale, 838 // and compute a ratio between the two. This allows us to adjust the wallpaper offset 839 // as though there is no layout scale. 840 float layoutScale = mLayoutScale; 841 int scaled = getChildOffset(page) - getRelativeChildOffset(page); 842 mLayoutScale = 1.0f; 843 float unscaled = getChildOffset(page) - getRelativeChildOffset(page); 844 mLayoutScale = layoutScale; 845 if (scaled > 0) { 846 mWallpaperScrollRatio = (1.0f * unscaled) / scaled; 847 } else { 848 mWallpaperScrollRatio = 1f; 849 } 850 } 851 852 class WallpaperOffsetInterpolator { 853 float mFinalHorizontalWallpaperOffset = 0.0f; 854 float mFinalVerticalWallpaperOffset = 0.5f; 855 float mHorizontalWallpaperOffset = 0.0f; 856 float mVerticalWallpaperOffset = 0.5f; 857 long mLastWallpaperOffsetUpdateTime; 858 boolean mIsMovingFast; 859 boolean mOverrideHorizontalCatchupConstant; 860 float mHorizontalCatchupConstant = 0.35f; 861 float mVerticalCatchupConstant = 0.35f; 862 863 public WallpaperOffsetInterpolator() { 864 } 865 866 public void setOverrideHorizontalCatchupConstant(boolean override) { 867 mOverrideHorizontalCatchupConstant = override; 868 } 869 870 public void setHorizontalCatchupConstant(float f) { 871 mHorizontalCatchupConstant = f; 872 } 873 874 public void setVerticalCatchupConstant(float f) { 875 mVerticalCatchupConstant = f; 876 } 877 878 public boolean computeScrollOffset() { 879 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 880 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 881 mIsMovingFast = false; 882 return false; 883 } 884 boolean isLandscape = mDisplayWidth > mDisplayHeight; 885 886 long currentTime = System.currentTimeMillis(); 887 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 888 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 889 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 890 891 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 892 if (!mIsMovingFast && xdiff > 0.07) { 893 mIsMovingFast = true; 894 } 895 896 float fractionToCatchUpIn1MsHorizontal; 897 if (mOverrideHorizontalCatchupConstant) { 898 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 899 } else if (mIsMovingFast) { 900 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 901 } else { 902 // slow 903 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 904 } 905 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 906 907 fractionToCatchUpIn1MsHorizontal /= 33f; 908 fractionToCatchUpIn1MsVertical /= 33f; 909 910 final float UPDATE_THRESHOLD = 0.00001f; 911 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 912 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 913 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 914 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 915 916 // Don't have any lag between workspace and wallpaper on non-large devices 917 if (!LauncherApplication.isScreenLarge() || jumpToFinalValue) { 918 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 919 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 920 } else { 921 float percentToCatchUpVertical = 922 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 923 float percentToCatchUpHorizontal = 924 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 925 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 926 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 927 } 928 929 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 930 return true; 931 } 932 933 public float getCurrX() { 934 return mHorizontalWallpaperOffset; 935 } 936 937 public float getFinalX() { 938 return mFinalHorizontalWallpaperOffset; 939 } 940 941 public float getCurrY() { 942 return mVerticalWallpaperOffset; 943 } 944 945 public float getFinalY() { 946 return mFinalVerticalWallpaperOffset; 947 } 948 949 public void setFinalX(float x) { 950 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 951 } 952 953 public void setFinalY(float y) { 954 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 955 } 956 957 public void jumpToFinal() { 958 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 959 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 960 } 961 } 962 963 @Override 964 public void computeScroll() { 965 super.computeScroll(); 966 syncWallpaperOffsetWithScroll(); 967 } 968 969 void showOutlines() { 970 if (!isSmall() && !mIsSwitchingState) { 971 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 972 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 973 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 974 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 975 mChildrenOutlineFadeInAnimation.start(); 976 } 977 } 978 979 void hideOutlines() { 980 if (!isSmall() && !mIsSwitchingState) { 981 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 982 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 983 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 984 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 985 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 986 mChildrenOutlineFadeOutAnimation.start(); 987 } 988 } 989 990 public void showOutlinesTemporarily() { 991 if (!mIsPageMoving && !isTouchActive()) { 992 snapToPage(mCurrentPage); 993 } 994 } 995 996 public void setChildrenOutlineAlpha(float alpha) { 997 mChildrenOutlineAlpha = alpha; 998 for (int i = 0; i < getChildCount(); i++) { 999 CellLayout cl = (CellLayout) getChildAt(i); 1000 cl.setBackgroundAlpha(alpha); 1001 } 1002 } 1003 1004 public float getChildrenOutlineAlpha() { 1005 return mChildrenOutlineAlpha; 1006 } 1007 1008 void disableBackground() { 1009 mDrawBackground = false; 1010 } 1011 void enableBackground() { 1012 mDrawBackground = true; 1013 } 1014 1015 private void animateBackgroundGradient(float finalAlpha, boolean animated) { 1016 if (mBackground == null) return; 1017 if (mBackgroundFadeInAnimation != null) { 1018 mBackgroundFadeInAnimation.cancel(); 1019 mBackgroundFadeInAnimation = null; 1020 } 1021 if (mBackgroundFadeOutAnimation != null) { 1022 mBackgroundFadeOutAnimation.cancel(); 1023 mBackgroundFadeOutAnimation = null; 1024 } 1025 float startAlpha = getBackgroundAlpha(); 1026 if (finalAlpha != startAlpha) { 1027 if (animated) { 1028 mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(startAlpha, finalAlpha); 1029 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1030 public void onAnimationUpdate(ValueAnimator animation) { 1031 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1032 } 1033 }); 1034 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1035 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1036 mBackgroundFadeOutAnimation.start(); 1037 } else { 1038 setBackgroundAlpha(finalAlpha); 1039 } 1040 } 1041 } 1042 1043 public void setBackgroundAlpha(float alpha) { 1044 if (alpha != mBackgroundAlpha) { 1045 mBackgroundAlpha = alpha; 1046 invalidate(); 1047 } 1048 } 1049 1050 public float getBackgroundAlpha() { 1051 return mBackgroundAlpha; 1052 } 1053 1054 /** 1055 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 1056 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 1057 * as being larger. This method computes what offset the rotated view should be translated 1058 * in order to minimize this perceived gap. 1059 * @param degrees Angle of the view 1060 * @param width Width of the view 1061 * @param height Height of the view 1062 * @return Offset to be used in a View.setTranslationX() call 1063 */ 1064 private float getOffsetXForRotation(float degrees, int width, int height) { 1065 mMatrix.reset(); 1066 mCamera.save(); 1067 mCamera.rotateY(Math.abs(degrees)); 1068 mCamera.getMatrix(mMatrix); 1069 mCamera.restore(); 1070 1071 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 1072 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 1073 mTempFloat2[0] = width; 1074 mTempFloat2[1] = height; 1075 mMatrix.mapPoints(mTempFloat2); 1076 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 1077 } 1078 1079 float backgroundAlphaInterpolator(float r) { 1080 float pivotA = 0.1f; 1081 float pivotB = 0.4f; 1082 if (r < pivotA) { 1083 return 0; 1084 } else if (r > pivotB) { 1085 return 1.0f; 1086 } else { 1087 return (r - pivotA)/(pivotB - pivotA); 1088 } 1089 } 1090 1091 float overScrollBackgroundAlphaInterpolator(float r) { 1092 float threshold = 0.08f; 1093 1094 if (r > mOverScrollMaxBackgroundAlpha) { 1095 mOverScrollMaxBackgroundAlpha = r; 1096 } else if (r < mOverScrollMaxBackgroundAlpha) { 1097 r = mOverScrollMaxBackgroundAlpha; 1098 } 1099 1100 return Math.min(r / threshold, 1.0f); 1101 } 1102 1103 private void screenScrolledLargeUI(int screenCenter) { 1104 for (int i = 0; i < getChildCount(); i++) { 1105 CellLayout cl = (CellLayout) getChildAt(i); 1106 if (cl != null) { 1107 float scrollProgress = getScrollProgress(screenCenter, cl, i); 1108 float rotation = WORKSPACE_ROTATION * scrollProgress; 1109 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1110 1111 // If the current page (i) is being over scrolled, we use a different 1112 // set of rules for setting the background alpha multiplier. 1113 if (!isSmall()) { 1114 if ((mScrollX < 0 && i == 0) || (mScrollX > mMaxScrollX && 1115 i == getChildCount() -1 )) { 1116 cl.setBackgroundAlphaMultiplier( 1117 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 1118 mOverScrollPageIndex = i; 1119 } else if (mOverScrollPageIndex != i) { 1120 cl.setBackgroundAlphaMultiplier( 1121 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1122 } 1123 } 1124 cl.setFastTranslationX(translationX); 1125 cl.setFastRotationY(rotation); 1126 if (mFadeInAdjacentScreens && !isSmall()) { 1127 float alpha = 1 - Math.abs(scrollProgress); 1128 cl.setFastAlpha(alpha); 1129 } 1130 cl.fastInvalidate(); 1131 } 1132 } 1133 invalidate(); 1134 } 1135 1136 private void resetCellLayoutTransforms(CellLayout cl, boolean left) { 1137 cl.setTranslationX(0); 1138 cl.setRotationY(0); 1139 cl.setOverScrollAmount(0, left); 1140 cl.setPivotX(cl.getMeasuredWidth() / 2); 1141 cl.setPivotY(cl.getMeasuredHeight() / 2); 1142 } 1143 1144 private void screenScrolledStandardUI(int screenCenter) { 1145 if (mScrollX < 0 || mScrollX > mMaxScrollX) { 1146 int index = mScrollX < 0 ? 0 : getChildCount() - 1; 1147 CellLayout cl = (CellLayout) getChildAt(index); 1148 float scrollProgress = getScrollProgress(screenCenter, cl, index); 1149 cl.setOverScrollAmount(Math.abs(scrollProgress), index == 0); 1150 float translationX = index == 0 ? mScrollX : - (mMaxScrollX - mScrollX); 1151 float rotation = - WORKSPACE_OVERSCROLL_ROTATION * scrollProgress; 1152 cl.setCameraDistance(mDensity * CAMERA_DISTANCE); 1153 cl.setPivotX(cl.getMeasuredWidth() * (index == 0 ? 0.75f : 0.25f)); 1154 cl.setTranslationX(translationX); 1155 cl.setRotationY(rotation); 1156 setFadeForOverScroll(Math.abs(scrollProgress)); 1157 } else { 1158 if (mOverscrollFade != 0) { 1159 setFadeForOverScroll(0); 1160 } 1161 // We don't want to mess with the translations during transitions 1162 if (!isSwitchingState()) { 1163 resetCellLayoutTransforms((CellLayout) getChildAt(0), true); 1164 resetCellLayoutTransforms((CellLayout) getChildAt(getChildCount() - 1), false); 1165 } 1166 } 1167 } 1168 1169 @Override 1170 protected void screenScrolled(int screenCenter) { 1171 if (LauncherApplication.isScreenLarge()) { 1172 // We don't call super.screenScrolled() here because we handle the adjacent pages alpha 1173 // ourselves (for efficiency), and there are no scrolling indicators to update. 1174 screenScrolledLargeUI(screenCenter); 1175 } else { 1176 super.screenScrolled(screenCenter); 1177 screenScrolledStandardUI(screenCenter); 1178 } 1179 } 1180 1181 @Override 1182 protected void overScroll(float amount) { 1183 if (LauncherApplication.isScreenLarge()) { 1184 dampedOverScroll(amount); 1185 } else { 1186 acceleratedOverScroll(amount); 1187 } 1188 } 1189 1190 protected void onAttachedToWindow() { 1191 super.onAttachedToWindow(); 1192 mWindowToken = getWindowToken(); 1193 computeScroll(); 1194 mDragController.setWindowToken(mWindowToken); 1195 } 1196 1197 protected void onDetachedFromWindow() { 1198 mWindowToken = null; 1199 } 1200 1201 @Override 1202 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1203 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1204 mUpdateWallpaperOffsetImmediately = true; 1205 } 1206 super.onLayout(changed, left, top, right, bottom); 1207 1208 // if shrinkToBottom() is called on initialization, it has to be deferred 1209 // until after the first call to onLayout so that it has the correct width 1210 if (mSwitchStateAfterFirstLayout) { 1211 mSwitchStateAfterFirstLayout = false; 1212 // shrink can trigger a synchronous onLayout call, so we 1213 // post this to avoid a stack overflow / tangled onLayout calls 1214 post(new Runnable() { 1215 public void run() { 1216 changeState(mStateAfterFirstLayout, false); 1217 } 1218 }); 1219 } 1220 } 1221 1222 @Override 1223 protected void onDraw(Canvas canvas) { 1224 updateWallpaperOffsets(); 1225 1226 // Draw the background gradient if necessary 1227 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1228 int alpha = (int) (mBackgroundAlpha * 255); 1229 mBackground.setAlpha(alpha); 1230 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1231 getMeasuredHeight()); 1232 mBackground.draw(canvas); 1233 } 1234 1235 super.onDraw(canvas); 1236 } 1237 1238 boolean isDrawingBackgroundGradient() { 1239 return (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground); 1240 } 1241 1242 @Override 1243 protected void dispatchDraw(Canvas canvas) { 1244 super.dispatchDraw(canvas); 1245 1246 if (mInScrollArea && !LauncherApplication.isScreenLarge()) { 1247 final int width = getWidth(); 1248 final int height = getHeight(); 1249 final int pageHeight = getChildAt(0).getHeight(); 1250 1251 // Set the height of the outline to be the height of the page 1252 final int offset = (height - pageHeight - mPaddingTop - mPaddingBottom) / 2; 1253 final int paddingTop = mPaddingTop + offset; 1254 final int paddingBottom = mPaddingBottom + offset; 1255 1256 final CellLayout leftPage = (CellLayout) getChildAt(mCurrentPage - 1); 1257 final CellLayout rightPage = (CellLayout) getChildAt(mCurrentPage + 1); 1258 1259 if (leftPage != null && leftPage.getIsDragOverlapping()) { 1260 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left_holo); 1261 d.setBounds(mScrollX, paddingTop, mScrollX + d.getIntrinsicWidth(), 1262 height - paddingBottom); 1263 d.draw(canvas); 1264 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 1265 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right_holo); 1266 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), paddingTop, mScrollX + width, 1267 height - paddingBottom); 1268 d.draw(canvas); 1269 } 1270 } 1271 } 1272 1273 @Override 1274 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1275 if (!mLauncher.isAllAppsVisible()) { 1276 final Folder openFolder = getOpenFolder(); 1277 if (openFolder != null) { 1278 return openFolder.requestFocus(direction, previouslyFocusedRect); 1279 } else { 1280 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1281 } 1282 } 1283 return false; 1284 } 1285 1286 @Override 1287 public int getDescendantFocusability() { 1288 if (isSmall()) { 1289 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1290 } 1291 return super.getDescendantFocusability(); 1292 } 1293 1294 @Override 1295 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1296 if (!mLauncher.isAllAppsVisible()) { 1297 final Folder openFolder = getOpenFolder(); 1298 if (openFolder != null) { 1299 openFolder.addFocusables(views, direction); 1300 } else { 1301 super.addFocusables(views, direction, focusableMode); 1302 } 1303 } 1304 } 1305 1306 public boolean isSmall() { 1307 return mState == State.SMALL || mState == State.SPRING_LOADED; 1308 } 1309 1310 void enableChildrenCache(int fromPage, int toPage) { 1311 if (fromPage > toPage) { 1312 final int temp = fromPage; 1313 fromPage = toPage; 1314 toPage = temp; 1315 } 1316 1317 final int screenCount = getChildCount(); 1318 1319 fromPage = Math.max(fromPage, 0); 1320 toPage = Math.min(toPage, screenCount - 1); 1321 1322 for (int i = fromPage; i <= toPage; i++) { 1323 final CellLayout layout = (CellLayout) getChildAt(i); 1324 layout.setChildrenDrawnWithCacheEnabled(true); 1325 layout.setChildrenDrawingCacheEnabled(true); 1326 } 1327 } 1328 1329 void clearChildrenCache() { 1330 final int screenCount = getChildCount(); 1331 for (int i = 0; i < screenCount; i++) { 1332 final CellLayout layout = (CellLayout) getChildAt(i); 1333 layout.setChildrenDrawnWithCacheEnabled(false); 1334 // In software mode, we don't want the items to continue to be drawn into bitmaps 1335 if (!isHardwareAccelerated()) { 1336 layout.setChildrenDrawingCacheEnabled(false); 1337 } 1338 } 1339 } 1340 1341 private void updateChildrenLayersEnabled() { 1342 boolean small = isSmall() || mIsSwitchingState; 1343 boolean dragging = mAnimatingViewIntoPlace || mIsDragOccuring; 1344 boolean enableChildrenLayers = small || dragging || isPageMoving(); 1345 1346 if (enableChildrenLayers != mChildrenLayersEnabled) { 1347 mChildrenLayersEnabled = enableChildrenLayers; 1348 for (int i = 0; i < getPageCount(); i++) { 1349 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(enableChildrenLayers); 1350 } 1351 } 1352 } 1353 1354 protected void onWallpaperTap(MotionEvent ev) { 1355 final int[] position = mTempCell; 1356 getLocationOnScreen(position); 1357 1358 int pointerIndex = ev.getActionIndex(); 1359 position[0] += (int) ev.getX(pointerIndex); 1360 position[1] += (int) ev.getY(pointerIndex); 1361 1362 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1363 ev.getAction() == MotionEvent.ACTION_UP 1364 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1365 position[0], position[1], 0, null); 1366 } 1367 1368 /* 1369 * This interpolator emulates the rate at which the perceived scale of an object changes 1370 * as its distance from a camera increases. When this interpolator is applied to a scale 1371 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1372 * from the camera. 1373 */ 1374 static class ZInterpolator implements TimeInterpolator { 1375 private float focalLength; 1376 1377 public ZInterpolator(float foc) { 1378 focalLength = foc; 1379 } 1380 1381 public float getInterpolation(float input) { 1382 return (1.0f - focalLength / (focalLength + input)) / 1383 (1.0f - focalLength / (focalLength + 1.0f)); 1384 } 1385 } 1386 1387 /* 1388 * The exact reverse of ZInterpolator. 1389 */ 1390 static class InverseZInterpolator implements TimeInterpolator { 1391 private ZInterpolator zInterpolator; 1392 public InverseZInterpolator(float foc) { 1393 zInterpolator = new ZInterpolator(foc); 1394 } 1395 public float getInterpolation(float input) { 1396 return 1 - zInterpolator.getInterpolation(1 - input); 1397 } 1398 } 1399 1400 /* 1401 * ZInterpolator compounded with an ease-out. 1402 */ 1403 static class ZoomOutInterpolator implements TimeInterpolator { 1404 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(0.75f); 1405 private final ZInterpolator zInterpolator = new ZInterpolator(0.13f); 1406 1407 public float getInterpolation(float input) { 1408 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1409 } 1410 } 1411 1412 /* 1413 * InvereZInterpolator compounded with an ease-out. 1414 */ 1415 static class ZoomInInterpolator implements TimeInterpolator { 1416 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1417 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1418 1419 public float getInterpolation(float input) { 1420 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1421 } 1422 } 1423 1424 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1425 1426 /* 1427 * 1428 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1429 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1430 * 1431 * These methods mark the appropriate pages as accepting drops (which alters their visual 1432 * appearance). 1433 * 1434 */ 1435 public void onDragStartedWithItem(View v) { 1436 final Canvas canvas = new Canvas(); 1437 1438 // We need to add extra padding to the bitmap to make room for the glow effect 1439 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1440 1441 // The outline is used to visualize where the item will land if dropped 1442 mDragOutline = createDragOutline(v, canvas, bitmapPadding); 1443 } 1444 1445 public void onDragStartedWithItemSpans(int spanX, int spanY, Bitmap b) { 1446 onDragStartedWithItemSpans(spanX, spanY, b, null); 1447 } 1448 1449 public void onDragStartedWithItemSpans(int spanX, int spanY, Bitmap b, Paint alphaClipPaint) { 1450 final Canvas canvas = new Canvas(); 1451 1452 // We need to add extra padding to the bitmap to make room for the glow effect 1453 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1454 1455 CellLayout cl = (CellLayout) getChildAt(0); 1456 1457 int[] size = cl.cellSpansToSize(spanX, spanY); 1458 1459 // The outline is used to visualize where the item will land if dropped 1460 mDragOutline = createDragOutline(b, canvas, bitmapPadding, size[0], size[1], alphaClipPaint); 1461 } 1462 1463 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1464 // never dragged over 1465 public void onDragStopped(boolean success) { 1466 // In the success case, DragController has already called onDragExit() 1467 if (!success) { 1468 doDragExit(null); 1469 } 1470 } 1471 1472 public void exitWidgetResizeMode() { 1473 DragLayer dragLayer = mLauncher.getDragLayer(); 1474 dragLayer.clearAllResizeFrames(); 1475 } 1476 1477 private void initAnimationArrays() { 1478 final int childCount = getChildCount(); 1479 if (mOldTranslationXs != null) return; 1480 mOldTranslationXs = new float[childCount]; 1481 mOldTranslationYs = new float[childCount]; 1482 mOldScaleXs = new float[childCount]; 1483 mOldScaleYs = new float[childCount]; 1484 mOldBackgroundAlphas = new float[childCount]; 1485 mOldBackgroundAlphaMultipliers = new float[childCount]; 1486 mOldAlphas = new float[childCount]; 1487 mOldRotationYs = new float[childCount]; 1488 mNewTranslationXs = new float[childCount]; 1489 mNewTranslationYs = new float[childCount]; 1490 mNewScaleXs = new float[childCount]; 1491 mNewScaleYs = new float[childCount]; 1492 mNewBackgroundAlphas = new float[childCount]; 1493 mNewBackgroundAlphaMultipliers = new float[childCount]; 1494 mNewAlphas = new float[childCount]; 1495 mNewRotationYs = new float[childCount]; 1496 } 1497 1498 public void changeState(State shrinkState) { 1499 changeState(shrinkState, true); 1500 } 1501 1502 void changeState(final State state, boolean animated) { 1503 changeState(state, animated, 0); 1504 } 1505 1506 void changeState(final State state, boolean animated, int delay) { 1507 if (mState == state) { 1508 return; 1509 } 1510 if (mFirstLayout) { 1511 // (mFirstLayout == "first layout has not happened yet") 1512 // cancel any pending shrinks that were set earlier 1513 mSwitchStateAfterFirstLayout = false; 1514 mStateAfterFirstLayout = state; 1515 return; 1516 } 1517 1518 // Initialize animation arrays for the first time if necessary 1519 initAnimationArrays(); 1520 1521 // Cancel any running transition animations 1522 if (mAnimator != null) mAnimator.cancel(); 1523 mAnimator = new AnimatorSet(); 1524 1525 // Stop any scrolling, move to the current page right away 1526 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1527 1528 final State oldState = mState; 1529 final boolean oldStateIsNormal = (oldState == State.NORMAL); 1530 final boolean oldStateIsSmall = (oldState == State.SMALL); 1531 mState = state; 1532 final boolean stateIsNormal = (state == State.NORMAL); 1533 final boolean stateIsSpringLoaded = (state == State.SPRING_LOADED); 1534 final boolean stateIsSmall = (state == State.SMALL); 1535 float finalScaleFactor = 1.0f; 1536 float finalBackgroundAlpha = stateIsSpringLoaded ? 1.0f : 0f; 1537 float translationX = 0; 1538 float translationY = 0; 1539 boolean zoomIn = true; 1540 1541 if (state != State.NORMAL) { 1542 finalScaleFactor = mSpringLoadedShrinkFactor - (stateIsSmall ? 0.1f : 0); 1543 if (oldStateIsNormal && stateIsSmall) { 1544 zoomIn = false; 1545 setLayoutScale(finalScaleFactor); 1546 updateChildrenLayersEnabled(); 1547 } else { 1548 finalBackgroundAlpha = 1.0f; 1549 setLayoutScale(finalScaleFactor); 1550 } 1551 } else { 1552 setLayoutScale(1.0f); 1553 } 1554 1555 final int duration = zoomIn ? 1556 getResources().getInteger(R.integer.config_workspaceUnshrinkTime) : 1557 getResources().getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1558 for (int i = 0; i < getChildCount(); i++) { 1559 final CellLayout cl = (CellLayout) getChildAt(i); 1560 float rotation = 0f; 1561 float initialAlpha = cl.getAlpha(); 1562 float finalAlphaMultiplierValue = 1f; 1563 float finalAlpha = (!mFadeInAdjacentScreens || stateIsSpringLoaded || 1564 (i == mCurrentPage)) ? 1f : 0f; 1565 1566 // Determine the pages alpha during the state transition 1567 if ((oldStateIsSmall && stateIsNormal) || 1568 (oldStateIsNormal && stateIsSmall)) { 1569 // To/from workspace - only show the current page unless the transition is not 1570 // animated and the animation end callback below doesn't run 1571 if (i == mCurrentPage || !animated) { 1572 finalAlpha = 1f; 1573 finalAlphaMultiplierValue = 0f; 1574 } else { 1575 initialAlpha = 0f; 1576 finalAlpha = 0f; 1577 } 1578 } 1579 1580 // Update the rotation of the screen (don't apply rotation on Phone UI) 1581 if (LauncherApplication.isScreenLarge()) { 1582 if (i < mCurrentPage) { 1583 rotation = WORKSPACE_ROTATION; 1584 } else if (i > mCurrentPage) { 1585 rotation = -WORKSPACE_ROTATION; 1586 } 1587 } 1588 1589 // If the screen is not xlarge, then don't rotate the CellLayouts 1590 // NOTE: If we don't update the side pages alpha, then we should not hide the side 1591 // pages. see unshrink(). 1592 if (LauncherApplication.isScreenLarge()) { 1593 translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1594 } 1595 1596 mOldAlphas[i] = initialAlpha; 1597 mNewAlphas[i] = finalAlpha; 1598 if (animated) { 1599 mOldTranslationXs[i] = cl.getTranslationX(); 1600 mOldTranslationYs[i] = cl.getTranslationY(); 1601 mOldScaleXs[i] = cl.getScaleX(); 1602 mOldScaleYs[i] = cl.getScaleY(); 1603 mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1604 mOldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1605 mOldRotationYs[i] = cl.getRotationY(); 1606 1607 mNewTranslationXs[i] = translationX; 1608 mNewTranslationYs[i] = translationY; 1609 mNewScaleXs[i] = finalScaleFactor; 1610 mNewScaleYs[i] = finalScaleFactor; 1611 mNewBackgroundAlphas[i] = finalBackgroundAlpha; 1612 mNewBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1613 mNewRotationYs[i] = rotation; 1614 } else { 1615 cl.setTranslationX(translationX); 1616 cl.setTranslationY(translationY); 1617 cl.setScaleX(finalScaleFactor); 1618 cl.setScaleY(finalScaleFactor); 1619 cl.setBackgroundAlpha(finalBackgroundAlpha); 1620 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1621 cl.setAlpha(finalAlpha); 1622 cl.setRotationY(rotation); 1623 mChangeStateAnimationListener.onAnimationEnd(null); 1624 } 1625 } 1626 1627 if (animated) { 1628 ValueAnimator animWithInterpolator = 1629 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1630 1631 if (zoomIn) { 1632 animWithInterpolator.setInterpolator(mZoomInInterpolator); 1633 } 1634 1635 animWithInterpolator.addListener(new AnimatorListenerAdapter() { 1636 @Override 1637 public void onAnimationEnd(android.animation.Animator animation) { 1638 // The above code to determine initialAlpha and finalAlpha will ensure that only 1639 // the current page is visible during (and subsequently, after) the transition 1640 // animation. If fade adjacent pages is disabled, then re-enable the page 1641 // visibility after the transition animation. 1642 if (!mFadeInAdjacentScreens && stateIsNormal && oldStateIsSmall) { 1643 for (int i = 0; i < getChildCount(); i++) { 1644 final CellLayout cl = (CellLayout) getChildAt(i); 1645 cl.setAlpha(1f); 1646 } 1647 } 1648 } 1649 }); 1650 animWithInterpolator.addUpdateListener(new LauncherAnimatorUpdateListener() { 1651 public void onAnimationUpdate(float a, float b) { 1652 mTransitionProgress = b; 1653 if (b == 0f) { 1654 // an optimization, but not required 1655 return; 1656 } 1657 invalidate(); 1658 for (int i = 0; i < getChildCount(); i++) { 1659 final CellLayout cl = (CellLayout) getChildAt(i); 1660 cl.fastInvalidate(); 1661 cl.setFastTranslationX(a * mOldTranslationXs[i] + b * mNewTranslationXs[i]); 1662 cl.setFastTranslationY(a * mOldTranslationYs[i] + b * mNewTranslationYs[i]); 1663 cl.setFastScaleX(a * mOldScaleXs[i] + b * mNewScaleXs[i]); 1664 cl.setFastScaleY(a * mOldScaleYs[i] + b * mNewScaleYs[i]); 1665 cl.setFastBackgroundAlpha( 1666 a * mOldBackgroundAlphas[i] + b * mNewBackgroundAlphas[i]); 1667 cl.setBackgroundAlphaMultiplier(a * mOldBackgroundAlphaMultipliers[i] + 1668 b * mNewBackgroundAlphaMultipliers[i]); 1669 cl.setFastAlpha(a * mOldAlphas[i] + b * mNewAlphas[i]); 1670 } 1671 } 1672 }); 1673 1674 ValueAnimator rotationAnim = 1675 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1676 rotationAnim.setInterpolator(new DecelerateInterpolator(2.0f)); 1677 rotationAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1678 public void onAnimationUpdate(float a, float b) { 1679 if (b == 0f) { 1680 // an optimization, but not required 1681 return; 1682 } 1683 for (int i = 0; i < getChildCount(); i++) { 1684 final CellLayout cl = (CellLayout) getChildAt(i); 1685 cl.setFastRotationY(a * mOldRotationYs[i] + b * mNewRotationYs[i]); 1686 } 1687 } 1688 }); 1689 1690 mAnimator.playTogether(animWithInterpolator, rotationAnim); 1691 mAnimator.setStartDelay(delay); 1692 // If we call this when we're not animated, onAnimationEnd is never called on 1693 // the listener; make sure we only use the listener when we're actually animating 1694 mAnimator.addListener(mChangeStateAnimationListener); 1695 mAnimator.start(); 1696 } 1697 1698 if (stateIsSpringLoaded) { 1699 // Right now we're covered by Apps Customize 1700 // Show the background gradient immediately, so the gradient will 1701 // be showing once AppsCustomize disappears 1702 animateBackgroundGradient(getResources().getInteger( 1703 R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, false); 1704 } else { 1705 // Fade the background gradient away 1706 animateBackgroundGradient(0f, true); 1707 } 1708 } 1709 1710 /** 1711 * Draw the View v into the given Canvas. 1712 * 1713 * @param v the view to draw 1714 * @param destCanvas the canvas to draw on 1715 * @param padding the horizontal and vertical padding to use when drawing 1716 */ 1717 private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { 1718 final Rect clipRect = mTempRect; 1719 v.getDrawingRect(clipRect); 1720 1721 boolean textVisible = false; 1722 1723 destCanvas.save(); 1724 if (v instanceof TextView && pruneToDrawable) { 1725 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1726 clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); 1727 destCanvas.translate(padding / 2, padding / 2); 1728 d.draw(destCanvas); 1729 } else { 1730 if (v instanceof FolderIcon) { 1731 // For FolderIcons the text can bleed into the icon area, and so we need to 1732 // hide the text completely (which can't be achieved by clipping). 1733 if (((FolderIcon) v).getTextVisible()) { 1734 ((FolderIcon) v).setTextVisible(false); 1735 textVisible = true; 1736 } 1737 } else if (v instanceof BubbleTextView) { 1738 final BubbleTextView tv = (BubbleTextView) v; 1739 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1740 tv.getLayout().getLineTop(0); 1741 } else if (v instanceof TextView) { 1742 final TextView tv = (TextView) v; 1743 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1744 tv.getLayout().getLineTop(0); 1745 } 1746 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1747 destCanvas.clipRect(clipRect, Op.REPLACE); 1748 v.draw(destCanvas); 1749 1750 // Restore text visibility of FolderIcon if necessary 1751 if (textVisible) { 1752 ((FolderIcon) v).setTextVisible(true); 1753 } 1754 } 1755 destCanvas.restore(); 1756 } 1757 1758 /** 1759 * Returns a new bitmap to show when the given View is being dragged around. 1760 * Responsibility for the bitmap is transferred to the caller. 1761 */ 1762 public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1763 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1764 Bitmap b; 1765 1766 if (v instanceof TextView) { 1767 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1768 b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, 1769 d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); 1770 } else { 1771 b = Bitmap.createBitmap( 1772 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1773 } 1774 1775 canvas.setBitmap(b); 1776 drawDragView(v, canvas, padding, true); 1777 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 1778 canvas.drawColor(mDragViewMultiplyColor, PorterDuff.Mode.MULTIPLY); 1779 canvas.setBitmap(null); 1780 1781 return b; 1782 } 1783 1784 /** 1785 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1786 * Responsibility for the bitmap is transferred to the caller. 1787 */ 1788 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1789 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1790 final Bitmap b = Bitmap.createBitmap( 1791 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1792 1793 canvas.setBitmap(b); 1794 drawDragView(v, canvas, padding, true); 1795 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1796 canvas.setBitmap(null); 1797 return b; 1798 } 1799 1800 /** 1801 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1802 * Responsibility for the bitmap is transferred to the caller. 1803 */ 1804 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h) { 1805 return createDragOutline(orig, canvas, padding, w, h, null); 1806 } 1807 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h, 1808 Paint alphaClipPaint) { 1809 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1810 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1811 canvas.setBitmap(b); 1812 1813 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 1814 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 1815 (h - padding) / (float) orig.getHeight()); 1816 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 1817 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 1818 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 1819 1820 // center the image 1821 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 1822 1823 Paint p = new Paint(); 1824 p.setFilterBitmap(true); 1825 canvas.drawBitmap(orig, src, dst, p); 1826 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor, 1827 alphaClipPaint); 1828 canvas.setBitmap(null); 1829 1830 return b; 1831 } 1832 1833 /** 1834 * Creates a drag outline to represent a drop (that we don't have the actual information for 1835 * yet). May be changed in the future to alter the drop outline slightly depending on the 1836 * clip description mime data. 1837 */ 1838 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 1839 Resources r = getResources(); 1840 final int outlineColor = r.getColor(android.R.color.holo_blue_light); 1841 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 1842 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 1843 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 1844 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 1845 final Bitmap b = Bitmap.createBitmap( 1846 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 1847 1848 canvas.setBitmap(b); 1849 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 1850 rectRadius, rectRadius, mExternalDragOutlinePaint); 1851 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1852 canvas.setBitmap(null); 1853 return b; 1854 } 1855 1856 void startDrag(CellLayout.CellInfo cellInfo) { 1857 View child = cellInfo.cell; 1858 1859 // Make sure the drag was started by a long press as opposed to a long click. 1860 if (!child.isInTouchMode()) { 1861 return; 1862 } 1863 1864 mDragInfo = cellInfo; 1865 child.setVisibility(GONE); 1866 1867 child.clearFocus(); 1868 child.setPressed(false); 1869 1870 final Canvas canvas = new Canvas(); 1871 1872 // We need to add extra padding to the bitmap to make room for the glow effect 1873 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1874 1875 // The outline is used to visualize where the item will land if dropped 1876 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 1877 beginDragShared(child, this); 1878 } 1879 1880 public void beginDragShared(View child, DragSource source) { 1881 Resources r = getResources(); 1882 1883 // We need to add extra padding to the bitmap to make room for the glow effect 1884 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1885 1886 // The drag bitmap follows the touch point around on the screen 1887 final Bitmap b = createDragBitmap(child, new Canvas(), bitmapPadding); 1888 1889 final int bmpWidth = b.getWidth(); 1890 1891 mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 1892 final int dragLayerX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 1893 int dragLayerY = mTempXY[1] - bitmapPadding / 2; 1894 1895 Point dragVisualizeOffset = null; 1896 Rect dragRect = null; 1897 if (child instanceof BubbleTextView || child instanceof PagedViewIcon) { 1898 int iconSize = r.getDimensionPixelSize(R.dimen.app_icon_size); 1899 int iconPaddingTop = r.getDimensionPixelSize(R.dimen.app_icon_padding_top); 1900 int top = child.getPaddingTop(); 1901 int left = (bmpWidth - iconSize) / 2; 1902 int right = left + iconSize; 1903 int bottom = top + iconSize; 1904 dragLayerY += top; 1905 // Note: The drag region is used to calculate drag layer offsets, but the 1906 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 1907 dragVisualizeOffset = new Point(-bitmapPadding / 2, iconPaddingTop - bitmapPadding / 2); 1908 dragRect = new Rect(left, top, right, bottom); 1909 } else if (child instanceof FolderIcon) { 1910 int previewSize = r.getDimensionPixelSize(R.dimen.folder_preview_size); 1911 dragRect = new Rect(0, 0, child.getWidth(), previewSize); 1912 } 1913 1914 // Clear the pressed state if necessary 1915 if (child instanceof BubbleTextView) { 1916 BubbleTextView icon = (BubbleTextView) child; 1917 icon.clearPressedOrFocusedBackground(); 1918 } 1919 1920 mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 1921 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect); 1922 b.recycle(); 1923 } 1924 1925 void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, int screen, 1926 int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { 1927 View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); 1928 1929 final int[] cellXY = new int[2]; 1930 target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1931 addInScreen(view, container, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1932 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, cellXY[0], 1933 cellXY[1]); 1934 } 1935 1936 public boolean transitionStateShouldAllowDrop() { 1937 return (!isSwitchingState() || mTransitionProgress > 0.5f); 1938 } 1939 1940 /** 1941 * {@inheritDoc} 1942 */ 1943 public boolean acceptDrop(DragObject d) { 1944 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1945 if (d.dragSource != this) { 1946 // Don't accept the drop if we're not over a screen at time of drop 1947 if (mDragTargetLayout == null) { 1948 return false; 1949 } 1950 if (!transitionStateShouldAllowDrop()) return false; 1951 1952 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 1953 d.dragView, mDragViewVisualCenter); 1954 1955 // We want the point to be mapped to the dragTarget. 1956 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 1957 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 1958 } else { 1959 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 1960 } 1961 1962 int spanX = 1; 1963 int spanY = 1; 1964 View ignoreView = null; 1965 if (mDragInfo != null) { 1966 final CellLayout.CellInfo dragCellInfo = mDragInfo; 1967 spanX = dragCellInfo.spanX; 1968 spanY = dragCellInfo.spanY; 1969 ignoreView = dragCellInfo.cell; 1970 } else { 1971 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 1972 spanX = dragInfo.spanX; 1973 spanY = dragInfo.spanY; 1974 } 1975 1976 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 1977 (int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell); 1978 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, true)) { 1979 return true; 1980 } 1981 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, 1982 mTargetCell)) { 1983 return true; 1984 } 1985 1986 1987 // Don't accept the drop if there's no room for the item 1988 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 1989 mLauncher.showOutOfSpaceMessage(); 1990 return false; 1991 } 1992 } 1993 return true; 1994 } 1995 1996 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, 1997 boolean considerTimeout) { 1998 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 1999 2000 boolean hasntMoved = false; 2001 if (mDragInfo != null) { 2002 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2003 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2004 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2005 } 2006 2007 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2008 return false; 2009 } 2010 2011 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2012 boolean willBecomeShortcut = 2013 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2014 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2015 2016 return (aboveShortcut && willBecomeShortcut); 2017 } 2018 2019 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell) { 2020 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2021 if (dropOverView instanceof FolderIcon) { 2022 FolderIcon fi = (FolderIcon) dropOverView; 2023 if (fi.acceptDrop(dragInfo)) { 2024 return true; 2025 } 2026 } 2027 return false; 2028 } 2029 2030 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2031 int[] targetCell, boolean external, DragView dragView, Runnable postAnimationRunnable) { 2032 View v = target.getChildAt(targetCell[0], targetCell[1]); 2033 boolean hasntMoved = false; 2034 if (mDragInfo != null) { 2035 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2036 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2037 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2038 } 2039 2040 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2041 mCreateUserFolderOnDrop = false; 2042 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 2043 2044 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2045 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2046 2047 if (aboveShortcut && willBecomeShortcut) { 2048 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2049 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2050 // if the drag started here, we need to remove it from the workspace 2051 if (!external) { 2052 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2053 } 2054 2055 Rect folderLocation = new Rect(); 2056 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2057 target.removeView(v); 2058 2059 FolderIcon fi = 2060 mLauncher.addFolder(target, container, screen, targetCell[0], targetCell[1]); 2061 destInfo.cellX = -1; 2062 destInfo.cellY = -1; 2063 sourceInfo.cellX = -1; 2064 sourceInfo.cellY = -1; 2065 2066 // If the dragView is null, we can't animate 2067 boolean animate = dragView != null; 2068 if (animate) { 2069 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2070 postAnimationRunnable); 2071 } else { 2072 fi.addItem(destInfo); 2073 fi.addItem(sourceInfo); 2074 } 2075 return true; 2076 } 2077 return false; 2078 } 2079 2080 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2081 DragObject d, boolean external) { 2082 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2083 if (dropOverView instanceof FolderIcon) { 2084 FolderIcon fi = (FolderIcon) dropOverView; 2085 if (fi.acceptDrop(d.dragInfo)) { 2086 fi.onDrop(d); 2087 2088 // if the drag started here, we need to remove it from the workspace 2089 if (!external) { 2090 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2091 } 2092 return true; 2093 } 2094 } 2095 return false; 2096 } 2097 2098 public void onDrop(DragObject d) { 2099 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2100 mDragViewVisualCenter); 2101 2102 // We want the point to be mapped to the dragTarget. 2103 if (mDragTargetLayout != null) { 2104 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2105 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2106 } else { 2107 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2108 } 2109 } 2110 2111 CellLayout dropTargetLayout = mDragTargetLayout; 2112 2113 int snapScreen = -1; 2114 if (d.dragSource != this) { 2115 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2116 (int) mDragViewVisualCenter[1] }; 2117 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2118 } else if (mDragInfo != null) { 2119 final View cell = mDragInfo.cell; 2120 2121 if (dropTargetLayout != null) { 2122 // Move internally 2123 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2124 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2125 long container = hasMovedIntoHotseat ? 2126 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2127 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2128 int screen = (mTargetCell[0] < 0) ? 2129 mDragInfo.screen : indexOfChild(dropTargetLayout); 2130 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2131 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2132 // First we find the cell nearest to point at which the item is 2133 // dropped, without any consideration to whether there is an item there. 2134 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2135 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2136 // If the item being dropped is a shortcut and the nearest drop 2137 // cell also contains a shortcut, then create a folder with the two shortcuts. 2138 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2139 dropTargetLayout, mTargetCell, false, d.dragView, null)) { 2140 return; 2141 } 2142 2143 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, d, false)) { 2144 return; 2145 } 2146 2147 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2148 // we need to find the nearest cell location that is vacant 2149 mTargetCell = findNearestVacantArea((int) mDragViewVisualCenter[0], 2150 (int) mDragViewVisualCenter[1], mDragInfo.spanX, mDragInfo.spanY, cell, 2151 dropTargetLayout, mTargetCell); 2152 2153 if (mCurrentPage != screen && !hasMovedIntoHotseat) { 2154 snapScreen = screen; 2155 snapToPage(screen); 2156 } 2157 2158 if (mTargetCell[0] >= 0 && mTargetCell[1] >= 0) { 2159 if (hasMovedLayouts) { 2160 // Reparent the view 2161 getParentCellLayoutForView(cell).removeView(cell); 2162 addInScreen(cell, container, screen, mTargetCell[0], mTargetCell[1], 2163 mDragInfo.spanX, mDragInfo.spanY); 2164 } 2165 2166 // update the item's position after drop 2167 final ItemInfo info = (ItemInfo) cell.getTag(); 2168 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2169 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 2170 lp.cellX = mTargetCell[0]; 2171 lp.cellY = mTargetCell[1]; 2172 cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screen, 2173 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2174 2175 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2176 cell instanceof LauncherAppWidgetHostView) { 2177 final CellLayout cellLayout = dropTargetLayout; 2178 // We post this call so that the widget has a chance to be placed 2179 // in its final location 2180 2181 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2182 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2183 if (pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2184 final Runnable resizeRunnable = new Runnable() { 2185 public void run() { 2186 DragLayer dragLayer = mLauncher.getDragLayer(); 2187 dragLayer.addResizeFrame(info, hostView, cellLayout); 2188 } 2189 }; 2190 post(new Runnable() { 2191 public void run() { 2192 if (!isPageMoving()) { 2193 resizeRunnable.run(); 2194 } else { 2195 mDelayedResizeRunnable = resizeRunnable; 2196 } 2197 } 2198 }); 2199 } 2200 } 2201 2202 LauncherModel.moveItemInDatabase(mLauncher, info, container, screen, lp.cellX, 2203 lp.cellY); 2204 } 2205 } 2206 2207 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2208 2209 // Prepare it to be animated into its new position 2210 // This must be called after the view has been re-parented 2211 final Runnable disableHardwareLayersRunnable = new Runnable() { 2212 @Override 2213 public void run() { 2214 mAnimatingViewIntoPlace = false; 2215 updateChildrenLayersEnabled(); 2216 } 2217 }; 2218 mAnimatingViewIntoPlace = true; 2219 if (d.dragView.hasDrawn()) { 2220 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2221 setFinalScrollForPageChange(snapScreen); 2222 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2223 disableHardwareLayersRunnable); 2224 resetFinalScrollForPageChange(snapScreen); 2225 } else { 2226 cell.setVisibility(VISIBLE); 2227 } 2228 parent.onDropChild(cell); 2229 } 2230 } 2231 2232 public void setFinalScrollForPageChange(int screen) { 2233 if (screen >= 0) { 2234 mSavedScrollX = getScrollX(); 2235 CellLayout cl = (CellLayout) getChildAt(screen); 2236 mSavedTranslationX = cl.getTranslationX(); 2237 mSavedRotationY = cl.getRotationY(); 2238 final int newX = getChildOffset(screen) - getRelativeChildOffset(screen); 2239 setScrollX(newX); 2240 cl.setTranslationX(0f); 2241 cl.setRotationY(0f); 2242 } 2243 } 2244 2245 public void resetFinalScrollForPageChange(int screen) { 2246 if (screen >= 0) { 2247 CellLayout cl = (CellLayout) getChildAt(screen); 2248 setScrollX(mSavedScrollX); 2249 cl.setTranslationX(mSavedTranslationX); 2250 cl.setRotationY(mSavedRotationY); 2251 } 2252 } 2253 2254 public void getViewLocationRelativeToSelf(View v, int[] location) { 2255 getLocationInWindow(location); 2256 int x = location[0]; 2257 int y = location[1]; 2258 2259 v.getLocationInWindow(location); 2260 int vX = location[0]; 2261 int vY = location[1]; 2262 2263 location[0] = vX - x; 2264 location[1] = vY - y; 2265 } 2266 2267 public void onDragEnter(DragObject d) { 2268 if (mDragTargetLayout != null) { 2269 mDragTargetLayout.setIsDragOverlapping(false); 2270 mDragTargetLayout.onDragExit(); 2271 } 2272 mDragTargetLayout = getCurrentDropLayout(); 2273 mDragTargetLayout.setIsDragOverlapping(true); 2274 mDragTargetLayout.onDragEnter(); 2275 2276 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2277 // don't need to show the outlines 2278 if (LauncherApplication.isScreenLarge()) { 2279 showOutlines(); 2280 } 2281 } 2282 2283 private void doDragExit(DragObject d) { 2284 // Clean up folders 2285 cleanupFolderCreation(d); 2286 2287 // Reset the scroll area and previous drag target 2288 onResetScrollArea(); 2289 2290 if (mDragTargetLayout != null) { 2291 mDragTargetLayout.setIsDragOverlapping(false); 2292 mDragTargetLayout.onDragExit(); 2293 } 2294 mLastDragOverView = null; 2295 2296 if (!mIsPageMoving) { 2297 hideOutlines(); 2298 } 2299 } 2300 2301 public void onDragExit(DragObject d) { 2302 doDragExit(d); 2303 } 2304 2305 public DropTarget getDropTargetDelegate(DragObject d) { 2306 return null; 2307 } 2308 2309 /** 2310 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 2311 * in the returned structure related to the widgets that match the drop (or a null list if it is 2312 * a shortcut drop). If the drop is not accepted then a null structure is returned. 2313 */ 2314 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 2315 final LauncherModel model = mLauncher.getModel(); 2316 final ClipDescription desc = event.getClipDescription(); 2317 final int mimeTypeCount = desc.getMimeTypeCount(); 2318 for (int i = 0; i < mimeTypeCount; ++i) { 2319 final String mimeType = desc.getMimeType(i); 2320 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 2321 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 2322 } else { 2323 final List<WidgetMimeTypeHandlerData> widgets = 2324 model.resolveWidgetsForMimeType(mContext, mimeType); 2325 if (widgets.size() > 0) { 2326 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 2327 } 2328 } 2329 } 2330 return null; 2331 } 2332 2333 /** 2334 * Global drag and drop handler 2335 */ 2336 @Override 2337 public boolean onDragEvent(DragEvent event) { 2338 final ClipDescription desc = event.getClipDescription(); 2339 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 2340 final int[] pos = new int[2]; 2341 layout.getLocationOnScreen(pos); 2342 // We need to offset the drag coordinates to layout coordinate space 2343 final int x = (int) event.getX() - pos[0]; 2344 final int y = (int) event.getY() - pos[1]; 2345 2346 switch (event.getAction()) { 2347 case DragEvent.ACTION_DRAG_STARTED: { 2348 // Validate this drag 2349 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2350 if (test != null) { 2351 boolean isShortcut = (test.second == null); 2352 if (isShortcut) { 2353 // Check if we have enough space on this screen to add a new shortcut 2354 if (!layout.findCellForSpan(pos, 1, 1)) { 2355 mLauncher.showOutOfSpaceMessage(); 2356 return false; 2357 } 2358 } 2359 } else { 2360 // Show error message if we couldn't accept any of the items 2361 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 2362 Toast.LENGTH_SHORT).show(); 2363 return false; 2364 } 2365 2366 // Create the drag outline 2367 // We need to add extra padding to the bitmap to make room for the glow effect 2368 final Canvas canvas = new Canvas(); 2369 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2370 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 2371 2372 // Show the current page outlines to indicate that we can accept this drop 2373 showOutlines(); 2374 layout.onDragEnter(); 2375 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1, null, null); 2376 2377 return true; 2378 } 2379 case DragEvent.ACTION_DRAG_LOCATION: 2380 // Visualize the drop location 2381 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1, null, null); 2382 return true; 2383 case DragEvent.ACTION_DROP: { 2384 // Try and add any shortcuts 2385 final LauncherModel model = mLauncher.getModel(); 2386 final ClipData data = event.getClipData(); 2387 2388 // We assume that the mime types are ordered in descending importance of 2389 // representation. So we enumerate the list of mime types and alert the 2390 // user if any widgets can handle the drop. Only the most preferred 2391 // representation will be handled. 2392 pos[0] = x; 2393 pos[1] = y; 2394 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2395 if (test != null) { 2396 final int index = test.first; 2397 final List<WidgetMimeTypeHandlerData> widgets = test.second; 2398 final boolean isShortcut = (widgets == null); 2399 final String mimeType = desc.getMimeType(index); 2400 if (isShortcut) { 2401 final Intent intent = data.getItemAt(index).getIntent(); 2402 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 2403 onDropExternal(new int[] { x, y }, info, layout, false); 2404 } else { 2405 if (widgets.size() == 1) { 2406 // If there is only one item, then go ahead and add and configure 2407 // that widget 2408 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 2409 final PendingAddWidgetInfo createInfo = 2410 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 2411 mLauncher.addAppWidgetFromDrop(createInfo, 2412 LauncherSettings.Favorites.CONTAINER_DESKTOP, mCurrentPage, null, pos); 2413 } else { 2414 // Show the widget picker dialog if there is more than one widget 2415 // that can handle this data type 2416 final InstallWidgetReceiver.WidgetListAdapter adapter = 2417 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 2418 data, widgets, layout, mCurrentPage, pos); 2419 final AlertDialog.Builder builder = 2420 new AlertDialog.Builder(mContext); 2421 builder.setAdapter(adapter, adapter); 2422 builder.setCancelable(true); 2423 builder.setTitle(mContext.getString( 2424 R.string.external_drop_widget_pick_title)); 2425 builder.setIcon(R.drawable.ic_no_applications); 2426 builder.show(); 2427 } 2428 } 2429 } 2430 return true; 2431 } 2432 case DragEvent.ACTION_DRAG_ENDED: 2433 // Hide the page outlines after the drop 2434 layout.onDragExit(); 2435 hideOutlines(); 2436 return true; 2437 } 2438 return super.onDragEvent(event); 2439 } 2440 2441 /* 2442 * 2443 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2444 * coordinate space. The argument xy is modified with the return result. 2445 * 2446 */ 2447 void mapPointFromSelfToChild(View v, float[] xy) { 2448 mapPointFromSelfToChild(v, xy, null); 2449 } 2450 2451 /* 2452 * 2453 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2454 * coordinate space. The argument xy is modified with the return result. 2455 * 2456 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2457 * computing it itself; we use this to avoid redundant matrix inversions in 2458 * findMatchingPageForDragOver 2459 * 2460 */ 2461 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2462 if (cachedInverseMatrix == null) { 2463 v.getMatrix().invert(mTempInverseMatrix); 2464 cachedInverseMatrix = mTempInverseMatrix; 2465 } 2466 xy[0] = xy[0] + mScrollX - v.getLeft(); 2467 xy[1] = xy[1] + mScrollY - v.getTop(); 2468 cachedInverseMatrix.mapPoints(xy); 2469 } 2470 2471 /* 2472 * Maps a point from the Workspace's coordinate system to another sibling view's. (Workspace 2473 * covers the full screen) 2474 */ 2475 void mapPointFromSelfToSibling(View v, float[] xy) { 2476 xy[0] = xy[0] - v.getLeft(); 2477 xy[1] = xy[1] - v.getTop(); 2478 } 2479 2480 /* 2481 * 2482 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2483 * the parent View's coordinate space. The argument xy is modified with the return result. 2484 * 2485 */ 2486 void mapPointFromChildToSelf(View v, float[] xy) { 2487 v.getMatrix().mapPoints(xy); 2488 xy[0] -= (mScrollX - v.getLeft()); 2489 xy[1] -= (mScrollY - v.getTop()); 2490 } 2491 2492 static private float squaredDistance(float[] point1, float[] point2) { 2493 float distanceX = point1[0] - point2[0]; 2494 float distanceY = point2[1] - point2[1]; 2495 return distanceX * distanceX + distanceY * distanceY; 2496 } 2497 2498 /* 2499 * 2500 * Returns true if the passed CellLayout cl overlaps with dragView 2501 * 2502 */ 2503 boolean overlaps(CellLayout cl, DragView dragView, 2504 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2505 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2506 final float[] draggedItemTopLeft = mTempDragCoordinates; 2507 draggedItemTopLeft[0] = dragViewX; 2508 draggedItemTopLeft[1] = dragViewY; 2509 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2510 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2511 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2512 2513 // Transform the dragged item's top left coordinates 2514 // to the CellLayout's local coordinates 2515 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2516 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2517 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2518 2519 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2520 // Transform the dragged item's bottom right coordinates 2521 // to the CellLayout's local coordinates 2522 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2523 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2524 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2525 2526 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2527 float overlap = (overlapRegionRight - overlapRegionLeft) * 2528 (overlapRegionBottom - overlapRegionTop); 2529 if (overlap > 0) { 2530 return true; 2531 } 2532 } 2533 } 2534 return false; 2535 } 2536 2537 /* 2538 * 2539 * This method returns the CellLayout that is currently being dragged to. In order to drag 2540 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2541 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2542 * 2543 * Return null if no CellLayout is currently being dragged over 2544 * 2545 */ 2546 private CellLayout findMatchingPageForDragOver( 2547 DragView dragView, float originX, float originY, boolean exact) { 2548 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2549 // with the item being dragged and then choose the one that's closest to the touch point 2550 final int screenCount = getChildCount(); 2551 CellLayout bestMatchingScreen = null; 2552 float smallestDistSoFar = Float.MAX_VALUE; 2553 2554 for (int i = 0; i < screenCount; i++) { 2555 CellLayout cl = (CellLayout) getChildAt(i); 2556 2557 final float[] touchXy = {originX, originY}; 2558 // Transform the touch coordinates to the CellLayout's local coordinates 2559 // If the touch point is within the bounds of the cell layout, we can return immediately 2560 cl.getMatrix().invert(mTempInverseMatrix); 2561 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2562 2563 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2564 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2565 return cl; 2566 } 2567 2568 if (!exact && overlaps(cl, dragView, (int) originX, (int) originY, mTempInverseMatrix)) { 2569 // Get the center of the cell layout in screen coordinates 2570 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2571 cellLayoutCenter[0] = cl.getWidth()/2; 2572 cellLayoutCenter[1] = cl.getHeight()/2; 2573 mapPointFromChildToSelf(cl, cellLayoutCenter); 2574 2575 touchXy[0] = originX; 2576 touchXy[1] = originY; 2577 2578 // Calculate the distance between the center of the CellLayout 2579 // and the touch point 2580 float dist = squaredDistance(touchXy, cellLayoutCenter); 2581 2582 if (dist < smallestDistSoFar) { 2583 smallestDistSoFar = dist; 2584 bestMatchingScreen = cl; 2585 } 2586 } 2587 } 2588 return bestMatchingScreen; 2589 } 2590 2591 // This is used to compute the visual center of the dragView. This point is then 2592 // used to visualize drop locations and determine where to drop an item. The idea is that 2593 // the visual center represents the user's interpretation of where the item is, and hence 2594 // is the appropriate point to use when determining drop location. 2595 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2596 DragView dragView, float[] recycle) { 2597 float res[]; 2598 if (recycle == null) { 2599 res = new float[2]; 2600 } else { 2601 res = recycle; 2602 } 2603 2604 // First off, the drag view has been shifted in a way that is not represented in the 2605 // x and y values or the x/yOffsets. Here we account for that shift. 2606 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2607 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2608 2609 // These represent the visual top and left of drag view if a dragRect was provided. 2610 // If a dragRect was not provided, then they correspond to the actual view left and 2611 // top, as the dragRect is in that case taken to be the entire dragView. 2612 // R.dimen.dragViewOffsetY. 2613 int left = x - xOffset; 2614 int top = y - yOffset; 2615 2616 // In order to find the visual center, we shift by half the dragRect 2617 res[0] = left + dragView.getDragRegion().width() / 2; 2618 res[1] = top + dragView.getDragRegion().height() / 2; 2619 2620 return res; 2621 } 2622 2623 private boolean isDragWidget(DragObject d) { 2624 return (d.dragInfo instanceof LauncherAppWidgetInfo || 2625 d.dragInfo instanceof PendingAddWidgetInfo); 2626 } 2627 private boolean isExternalDragWidget(DragObject d) { 2628 return d.dragSource != this && isDragWidget(d); 2629 } 2630 2631 public void onDragOver(DragObject d) { 2632 // Skip drag over events while we are dragging over side pages 2633 if (mInScrollArea) return; 2634 if (mIsSwitchingState) return; 2635 2636 Rect r = new Rect(); 2637 CellLayout layout = null; 2638 ItemInfo item = (ItemInfo) d.dragInfo; 2639 2640 // Ensure that we have proper spans for the item that we are dropping 2641 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2642 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2643 d.dragView, mDragViewVisualCenter); 2644 2645 // Identify whether we have dragged over a side page 2646 if (isSmall()) { 2647 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 2648 mLauncher.getHotseat().getHitRect(r); 2649 if (r.contains(d.x, d.y)) { 2650 layout = mLauncher.getHotseat().getLayout(); 2651 } 2652 } 2653 if (layout == null) { 2654 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, true); 2655 } 2656 if (layout != mDragTargetLayout) { 2657 // Cancel all intermediate folder states 2658 cleanupFolderCreation(d); 2659 2660 if (mDragTargetLayout != null) { 2661 mDragTargetLayout.setIsDragOverlapping(false); 2662 mDragTargetLayout.onDragExit(); 2663 } 2664 mDragTargetLayout = layout; 2665 if (mDragTargetLayout != null) { 2666 mDragTargetLayout.setIsDragOverlapping(true); 2667 mDragTargetLayout.onDragEnter(); 2668 } else { 2669 mLastDragOverView = null; 2670 } 2671 2672 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 2673 if (isInSpringLoadedMode) { 2674 if (mLauncher.isHotseatLayout(layout)) { 2675 mSpringLoadedDragController.cancel(); 2676 } else { 2677 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2678 } 2679 } 2680 } 2681 } else { 2682 // Test to see if we are over the hotseat otherwise just use the current page 2683 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 2684 mLauncher.getHotseat().getHitRect(r); 2685 if (r.contains(d.x, d.y)) { 2686 layout = mLauncher.getHotseat().getLayout(); 2687 } 2688 } 2689 if (layout == null) { 2690 layout = getCurrentDropLayout(); 2691 } 2692 if (layout != mDragTargetLayout) { 2693 if (mDragTargetLayout != null) { 2694 mDragTargetLayout.setIsDragOverlapping(false); 2695 mDragTargetLayout.onDragExit(); 2696 } 2697 mDragTargetLayout = layout; 2698 mDragTargetLayout.setIsDragOverlapping(true); 2699 mDragTargetLayout.onDragEnter(); 2700 } 2701 } 2702 2703 // Handle the drag over 2704 if (mDragTargetLayout != null) { 2705 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2706 2707 // We want the point to be mapped to the dragTarget. 2708 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2709 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2710 } else { 2711 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2712 } 2713 ItemInfo info = (ItemInfo) d.dragInfo; 2714 2715 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2716 (int) mDragViewVisualCenter[1], 1, 1, mDragTargetLayout, mTargetCell); 2717 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2718 mTargetCell[1]); 2719 2720 boolean userFolderPending = willCreateUserFolder(info, mDragTargetLayout, 2721 mTargetCell, false); 2722 boolean isOverFolder = dragOverView instanceof FolderIcon; 2723 if (dragOverView != mLastDragOverView) { 2724 cancelFolderCreation(); 2725 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2726 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2727 } 2728 } 2729 2730 if (userFolderPending && dragOverView != mLastDragOverView) { 2731 mFolderCreationAlarm.setOnAlarmListener(new 2732 FolderCreationAlarmListener(mDragTargetLayout, mTargetCell[0], mTargetCell[1])); 2733 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2734 } 2735 2736 if (dragOverView != mLastDragOverView && isOverFolder) { 2737 ((FolderIcon) dragOverView).onDragEnter(d.dragInfo); 2738 if (mDragTargetLayout != null) { 2739 mDragTargetLayout.clearDragOutlines(); 2740 } 2741 } 2742 mLastDragOverView = dragOverView; 2743 2744 if (!mCreateUserFolderOnDrop && !isOverFolder) { 2745 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2746 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2747 item.spanX, item.spanY, d.dragView.getDragVisualizeOffset(), 2748 d.dragView.getDragRegion()); 2749 } 2750 } 2751 } 2752 2753 private void cleanupFolderCreation(DragObject d) { 2754 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2755 mDragFolderRingAnimator.animateToNaturalState(); 2756 } 2757 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2758 if (d != null) { 2759 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2760 } 2761 } 2762 mFolderCreationAlarm.cancelAlarm(); 2763 } 2764 2765 private void cancelFolderCreation() { 2766 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2767 mDragFolderRingAnimator.animateToNaturalState(); 2768 } 2769 mCreateUserFolderOnDrop = false; 2770 mFolderCreationAlarm.cancelAlarm(); 2771 } 2772 2773 class FolderCreationAlarmListener implements OnAlarmListener { 2774 CellLayout layout; 2775 int cellX; 2776 int cellY; 2777 2778 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 2779 this.layout = layout; 2780 this.cellX = cellX; 2781 this.cellY = cellY; 2782 } 2783 2784 public void onAlarm(Alarm alarm) { 2785 if (mDragFolderRingAnimator == null) { 2786 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 2787 } 2788 mDragFolderRingAnimator.setCell(cellX, cellY); 2789 mDragFolderRingAnimator.setCellLayout(layout); 2790 mDragFolderRingAnimator.animateToAcceptState(); 2791 layout.showFolderAccept(mDragFolderRingAnimator); 2792 layout.clearDragOutlines(); 2793 mCreateUserFolderOnDrop = true; 2794 } 2795 } 2796 2797 @Override 2798 public void getHitRect(Rect outRect) { 2799 // We want the workspace to have the whole area of the display (it will find the correct 2800 // cell layout to drop to in the existing drag/drop logic. 2801 outRect.set(0, 0, mDisplayWidth, mDisplayHeight); 2802 } 2803 2804 /** 2805 * Add the item specified by dragInfo to the given layout. 2806 * @return true if successful 2807 */ 2808 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2809 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2810 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2811 return true; 2812 } 2813 mLauncher.showOutOfSpaceMessage(); 2814 return false; 2815 } 2816 2817 private void onDropExternal(int[] touchXY, Object dragInfo, 2818 CellLayout cellLayout, boolean insertAtFirst) { 2819 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 2820 } 2821 2822 /** 2823 * Drop an item that didn't originate on one of the workspace screens. 2824 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2825 * come from another app altogether. 2826 * 2827 * NOTE: This can also be called when we are outside of a drag event, when we want 2828 * to add an item to one of the workspace screens. 2829 */ 2830 private void onDropExternal(final int[] touchXY, final Object dragInfo, 2831 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 2832 final Runnable exitSpringLoadedRunnable = new Runnable() { 2833 @Override 2834 public void run() { 2835 mLauncher.exitSpringLoadedDragModeDelayed(true, false); 2836 } 2837 }; 2838 2839 ItemInfo info = (ItemInfo) dragInfo; 2840 int spanX = info.spanX; 2841 int spanY = info.spanY; 2842 if (mDragInfo != null) { 2843 spanX = mDragInfo.spanX; 2844 spanY = mDragInfo.spanY; 2845 } 2846 2847 final long container = mLauncher.isHotseatLayout(cellLayout) ? 2848 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2849 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2850 final int screen = indexOfChild(cellLayout); 2851 if (!mLauncher.isHotseatLayout(cellLayout) && screen != mCurrentPage 2852 && mState != State.SPRING_LOADED) { 2853 snapToPage(screen); 2854 } 2855 2856 if (info instanceof PendingAddItemInfo) { 2857 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 2858 2859 boolean findNearestVacantCell = true; 2860 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 2861 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 2862 cellLayout, mTargetCell); 2863 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, 2864 true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 2865 mDragTargetLayout, mTargetCell)) { 2866 findNearestVacantCell = false; 2867 } 2868 } 2869 if (findNearestVacantCell) { 2870 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], spanX, spanY, null, 2871 cellLayout, mTargetCell); 2872 } 2873 2874 Runnable onAnimationCompleteRunnable = new Runnable() { 2875 @Override 2876 public void run() { 2877 // When dragging and dropping from customization tray, we deal with creating 2878 // widgets/shortcuts/folders in a slightly different way 2879 switch (pendingInfo.itemType) { 2880 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 2881 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, 2882 container, screen, mTargetCell, null); 2883 break; 2884 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2885 mLauncher.processShortcutFromDrop(pendingInfo.componentName, 2886 container, screen, mTargetCell, null); 2887 break; 2888 default: 2889 throw new IllegalStateException("Unknown item type: " + 2890 pendingInfo.itemType); 2891 } 2892 cellLayout.onDragExit(); 2893 } 2894 }; 2895 2896 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 2897 // location and size on the home screen. 2898 int loc[] = new int[2]; 2899 cellLayout.cellToPoint(mTargetCell[0], mTargetCell[1], loc); 2900 2901 RectF r = new RectF(); 2902 cellLayout.cellToRect(mTargetCell[0], mTargetCell[1], spanX, spanY, r); 2903 setFinalTransitionTransform(cellLayout); 2904 float cellLayoutScale = 2905 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(cellLayout, loc); 2906 resetTransitionTransform(cellLayout); 2907 2908 float dragViewScale = r.width() / d.dragView.getMeasuredWidth(); 2909 // The animation will scale the dragView about its center, so we need to center about 2910 // the final location. 2911 loc[0] -= (d.dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 2912 loc[1] -= (d.dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 2913 2914 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, loc, 2915 dragViewScale * cellLayoutScale, onAnimationCompleteRunnable); 2916 } else { 2917 // This is for other drag/drop cases, like dragging from All Apps 2918 View view = null; 2919 2920 switch (info.itemType) { 2921 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 2922 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2923 if (info.container == NO_ID && info instanceof ApplicationInfo) { 2924 // Came from all apps -- make a copy 2925 info = new ShortcutInfo((ApplicationInfo) info); 2926 } 2927 view = mLauncher.createShortcut(R.layout.application, cellLayout, 2928 (ShortcutInfo) info); 2929 break; 2930 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 2931 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 2932 (FolderInfo) info, mIconCache); 2933 break; 2934 default: 2935 throw new IllegalStateException("Unknown item type: " + info.itemType); 2936 } 2937 2938 // First we find the cell nearest to point at which the item is 2939 // dropped, without any consideration to whether there is an item there. 2940 if (touchXY != null) { 2941 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 2942 cellLayout, mTargetCell); 2943 d.postAnimationRunnable = exitSpringLoadedRunnable; 2944 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, true, 2945 d.dragView, d.postAnimationRunnable)) { 2946 return; 2947 } 2948 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, d, true)) { 2949 return; 2950 } 2951 } 2952 2953 if (touchXY != null) { 2954 // when dragging and dropping, just find the closest free spot 2955 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], 1, 1, null, 2956 cellLayout, mTargetCell); 2957 } else { 2958 cellLayout.findCellForSpan(mTargetCell, 1, 1); 2959 } 2960 addInScreen(view, container, screen, mTargetCell[0], mTargetCell[1], info.spanX, 2961 info.spanY, insertAtFirst); 2962 cellLayout.onDropChild(view); 2963 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2964 cellLayout.getChildrenLayout().measureChild(view); 2965 2966 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, 2967 lp.cellX, lp.cellY); 2968 2969 if (d.dragView != null) { 2970 // We wrap the animation call in the temporary set and reset of the current 2971 // cellLayout to its final transform -- this means we animate the drag view to 2972 // the correct final location. 2973 setFinalTransitionTransform(cellLayout); 2974 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 2975 exitSpringLoadedRunnable); 2976 resetTransitionTransform(cellLayout); 2977 } 2978 } 2979 } 2980 2981 public void setFinalTransitionTransform(CellLayout layout) { 2982 if (isSwitchingState()) { 2983 int index = indexOfChild(layout); 2984 mCurrentScaleX = layout.getScaleX(); 2985 mCurrentScaleY = layout.getScaleY(); 2986 mCurrentTranslationX = layout.getTranslationX(); 2987 mCurrentTranslationY = layout.getTranslationY(); 2988 mCurrentRotationY = layout.getRotationY(); 2989 layout.setScaleX(mNewScaleXs[index]); 2990 layout.setScaleY(mNewScaleYs[index]); 2991 layout.setTranslationX(mNewTranslationXs[index]); 2992 layout.setTranslationY(mNewTranslationYs[index]); 2993 layout.setRotationY(mNewRotationYs[index]); 2994 } 2995 } 2996 public void resetTransitionTransform(CellLayout layout) { 2997 if (isSwitchingState()) { 2998 mCurrentScaleX = layout.getScaleX(); 2999 mCurrentScaleY = layout.getScaleY(); 3000 mCurrentTranslationX = layout.getTranslationX(); 3001 mCurrentTranslationY = layout.getTranslationY(); 3002 mCurrentRotationY = layout.getRotationY(); 3003 layout.setScaleX(mCurrentScaleX); 3004 layout.setScaleY(mCurrentScaleY); 3005 layout.setTranslationX(mCurrentTranslationX); 3006 layout.setTranslationY(mCurrentTranslationY); 3007 layout.setRotationY(mCurrentRotationY); 3008 } 3009 } 3010 3011 /** 3012 * Return the current {@link CellLayout}, correctly picking the destination 3013 * screen while a scroll is in progress. 3014 */ 3015 public CellLayout getCurrentDropLayout() { 3016 return (CellLayout) getChildAt(mNextPage == INVALID_PAGE ? mCurrentPage : mNextPage); 3017 } 3018 3019 /** 3020 * Return the current CellInfo describing our current drag; this method exists 3021 * so that Launcher can sync this object with the correct info when the activity is created/ 3022 * destroyed 3023 * 3024 */ 3025 public CellLayout.CellInfo getDragInfo() { 3026 return mDragInfo; 3027 } 3028 3029 /** 3030 * Calculate the nearest cell where the given object would be dropped. 3031 * 3032 * pixelX and pixelY should be in the coordinate system of layout 3033 */ 3034 private int[] findNearestVacantArea(int pixelX, int pixelY, 3035 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 3036 return layout.findNearestVacantArea( 3037 pixelX, pixelY, spanX, spanY, ignoreView, recycle); 3038 } 3039 3040 /** 3041 * Calculate the nearest cell where the given object would be dropped. 3042 * 3043 * pixelX and pixelY should be in the coordinate system of layout 3044 */ 3045 private int[] findNearestArea(int pixelX, int pixelY, 3046 int spanX, int spanY, CellLayout layout, int[] recycle) { 3047 return layout.findNearestArea( 3048 pixelX, pixelY, spanX, spanY, recycle); 3049 } 3050 3051 void setup(DragController dragController) { 3052 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3053 mDragController = dragController; 3054 3055 // hardware layers on children are enabled on startup, but should be disabled until 3056 // needed 3057 updateChildrenLayersEnabled(); 3058 setWallpaperDimension(); 3059 } 3060 3061 /** 3062 * Called at the end of a drag which originated on the workspace. 3063 */ 3064 public void onDropCompleted(View target, DragObject d, boolean success) { 3065 if (success) { 3066 if (target != this) { 3067 if (mDragInfo != null) { 3068 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 3069 if (mDragInfo.cell instanceof DropTarget) { 3070 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 3071 } 3072 } 3073 } 3074 } else if (mDragInfo != null) { 3075 // NOTE: When 'success' is true, onDragExit is called by the DragController before 3076 // calling onDropCompleted(). We call it ourselves here, but maybe this should be 3077 // moved into DragController.cancelDrag(). 3078 doDragExit(null); 3079 CellLayout cellLayout; 3080 if (mLauncher.isHotseatLayout(target)) { 3081 cellLayout = mLauncher.getHotseat().getLayout(); 3082 } else { 3083 cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3084 } 3085 cellLayout.onDropChild(mDragInfo.cell); 3086 } 3087 if (d.cancelled && mDragInfo.cell != null) { 3088 mDragInfo.cell.setVisibility(VISIBLE); 3089 } 3090 mDragOutline = null; 3091 mDragInfo = null; 3092 } 3093 3094 public boolean isDropEnabled() { 3095 return true; 3096 } 3097 3098 @Override 3099 protected void onRestoreInstanceState(Parcelable state) { 3100 super.onRestoreInstanceState(state); 3101 Launcher.setScreen(mCurrentPage); 3102 } 3103 3104 @Override 3105 public void scrollLeft() { 3106 if (!isSmall() && !mIsSwitchingState) { 3107 super.scrollLeft(); 3108 } 3109 Folder openFolder = getOpenFolder(); 3110 if (openFolder != null) { 3111 openFolder.completeDragExit(); 3112 } 3113 } 3114 3115 @Override 3116 public void scrollRight() { 3117 if (!isSmall() && !mIsSwitchingState) { 3118 super.scrollRight(); 3119 } 3120 Folder openFolder = getOpenFolder(); 3121 if (openFolder != null) { 3122 openFolder.completeDragExit(); 3123 } 3124 } 3125 3126 @Override 3127 public boolean onEnterScrollArea(int x, int y, int direction) { 3128 // Ignore the scroll area if we are dragging over the hot seat 3129 if (mLauncher.getHotseat() != null) { 3130 Rect r = new Rect(); 3131 mLauncher.getHotseat().getHitRect(r); 3132 if (r.contains(x, y)) { 3133 return false; 3134 } 3135 } 3136 3137 boolean result = false; 3138 if (!isSmall() && !mIsSwitchingState) { 3139 mInScrollArea = true; 3140 3141 final int page = mCurrentPage + (direction == DragController.SCROLL_LEFT ? -1 : 1); 3142 final CellLayout layout = (CellLayout) getChildAt(page); 3143 cancelFolderCreation(); 3144 3145 if (layout != null) { 3146 // Exit the current layout and mark the overlapping layout 3147 if (mDragTargetLayout != null) { 3148 mDragTargetLayout.setIsDragOverlapping(false); 3149 mDragTargetLayout.onDragExit(); 3150 } 3151 mDragTargetLayout = layout; 3152 mDragTargetLayout.setIsDragOverlapping(true); 3153 3154 // Workspace is responsible for drawing the edge glow on adjacent pages, 3155 // so we need to redraw the workspace when this may have changed. 3156 invalidate(); 3157 result = true; 3158 } 3159 } 3160 return result; 3161 } 3162 3163 @Override 3164 public boolean onExitScrollArea() { 3165 boolean result = false; 3166 if (mInScrollArea) { 3167 if (mDragTargetLayout != null) { 3168 // Unmark the overlapping layout and re-enter the current layout 3169 mDragTargetLayout.setIsDragOverlapping(false); 3170 mDragTargetLayout = getCurrentDropLayout(); 3171 mDragTargetLayout.onDragEnter(); 3172 3173 // Workspace is responsible for drawing the edge glow on adjacent pages, 3174 // so we need to redraw the workspace when this may have changed. 3175 invalidate(); 3176 result = true; 3177 } 3178 mInScrollArea = false; 3179 } 3180 return result; 3181 } 3182 3183 private void onResetScrollArea() { 3184 if (mDragTargetLayout != null) { 3185 // Unmark the overlapping layout 3186 mDragTargetLayout.setIsDragOverlapping(false); 3187 3188 // Workspace is responsible for drawing the edge glow on adjacent pages, 3189 // so we need to redraw the workspace when this may have changed. 3190 invalidate(); 3191 } 3192 mInScrollArea = false; 3193 } 3194 3195 /** 3196 * Returns a specific CellLayout 3197 */ 3198 CellLayout getParentCellLayoutForView(View v) { 3199 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3200 for (CellLayout layout : layouts) { 3201 if (layout.getChildrenLayout().indexOfChild(v) > -1) { 3202 return layout; 3203 } 3204 } 3205 return null; 3206 } 3207 3208 /** 3209 * Returns a list of all the CellLayouts in the workspace. 3210 */ 3211 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3212 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3213 int screenCount = getChildCount(); 3214 for (int screen = 0; screen < screenCount; screen++) { 3215 layouts.add(((CellLayout) getChildAt(screen))); 3216 } 3217 if (mLauncher.getHotseat() != null) { 3218 layouts.add(mLauncher.getHotseat().getLayout()); 3219 } 3220 return layouts; 3221 } 3222 3223 /** 3224 * We should only use this to search for specific children. Do not use this method to modify 3225 * CellLayoutChildren directly. 3226 */ 3227 ArrayList<CellLayoutChildren> getWorkspaceAndHotseatCellLayoutChildren() { 3228 ArrayList<CellLayoutChildren> childrenLayouts = new ArrayList<CellLayoutChildren>(); 3229 int screenCount = getChildCount(); 3230 for (int screen = 0; screen < screenCount; screen++) { 3231 childrenLayouts.add(((CellLayout) getChildAt(screen)).getChildrenLayout()); 3232 } 3233 if (mLauncher.getHotseat() != null) { 3234 childrenLayouts.add(mLauncher.getHotseat().getLayout().getChildrenLayout()); 3235 } 3236 return childrenLayouts; 3237 } 3238 3239 public Folder getFolderForTag(Object tag) { 3240 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3241 for (CellLayoutChildren layout: childrenLayouts) { 3242 int count = layout.getChildCount(); 3243 for (int i = 0; i < count; i++) { 3244 View child = layout.getChildAt(i); 3245 if (child instanceof Folder) { 3246 Folder f = (Folder) child; 3247 if (f.getInfo() == tag && f.getInfo().opened) { 3248 return f; 3249 } 3250 } 3251 } 3252 } 3253 return null; 3254 } 3255 3256 public View getViewForTag(Object tag) { 3257 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3258 for (CellLayoutChildren layout: childrenLayouts) { 3259 int count = layout.getChildCount(); 3260 for (int i = 0; i < count; i++) { 3261 View child = layout.getChildAt(i); 3262 if (child.getTag() == tag) { 3263 return child; 3264 } 3265 } 3266 } 3267 return null; 3268 } 3269 3270 void clearDropTargets() { 3271 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3272 for (CellLayoutChildren layout: childrenLayouts) { 3273 int childCount = layout.getChildCount(); 3274 for (int j = 0; j < childCount; j++) { 3275 View v = layout.getChildAt(j); 3276 if (v instanceof DropTarget) { 3277 mDragController.removeDropTarget((DropTarget) v); 3278 } 3279 } 3280 } 3281 } 3282 3283 void removeItems(final ArrayList<ApplicationInfo> apps) { 3284 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3285 3286 final HashSet<String> packageNames = new HashSet<String>(); 3287 final int appCount = apps.size(); 3288 for (int i = 0; i < appCount; i++) { 3289 packageNames.add(apps.get(i).componentName.getPackageName()); 3290 } 3291 3292 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3293 for (final CellLayout layoutParent: cellLayouts) { 3294 final ViewGroup layout = layoutParent.getChildrenLayout(); 3295 3296 // Avoid ANRs by treating each screen separately 3297 post(new Runnable() { 3298 public void run() { 3299 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3300 childrenToRemove.clear(); 3301 3302 int childCount = layout.getChildCount(); 3303 for (int j = 0; j < childCount; j++) { 3304 final View view = layout.getChildAt(j); 3305 Object tag = view.getTag(); 3306 3307 if (tag instanceof ShortcutInfo) { 3308 final ShortcutInfo info = (ShortcutInfo) tag; 3309 final Intent intent = info.intent; 3310 final ComponentName name = intent.getComponent(); 3311 3312 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3313 for (String packageName: packageNames) { 3314 if (packageName.equals(name.getPackageName())) { 3315 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3316 childrenToRemove.add(view); 3317 } 3318 } 3319 } 3320 } else if (tag instanceof FolderInfo) { 3321 final FolderInfo info = (FolderInfo) tag; 3322 final ArrayList<ShortcutInfo> contents = info.contents; 3323 final int contentsCount = contents.size(); 3324 final ArrayList<ShortcutInfo> appsToRemoveFromFolder = 3325 new ArrayList<ShortcutInfo>(); 3326 3327 for (int k = 0; k < contentsCount; k++) { 3328 final ShortcutInfo appInfo = contents.get(k); 3329 final Intent intent = appInfo.intent; 3330 final ComponentName name = intent.getComponent(); 3331 3332 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3333 for (String packageName: packageNames) { 3334 if (packageName.equals(name.getPackageName())) { 3335 appsToRemoveFromFolder.add(appInfo); 3336 } 3337 } 3338 } 3339 } 3340 for (ShortcutInfo item: appsToRemoveFromFolder) { 3341 info.remove(item); 3342 LauncherModel.deleteItemFromDatabase(mLauncher, item); 3343 } 3344 } else if (tag instanceof LauncherAppWidgetInfo) { 3345 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3346 final AppWidgetProviderInfo provider = 3347 widgets.getAppWidgetInfo(info.appWidgetId); 3348 if (provider != null) { 3349 for (String packageName: packageNames) { 3350 if (packageName.equals(provider.provider.getPackageName())) { 3351 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3352 childrenToRemove.add(view); 3353 } 3354 } 3355 } 3356 } 3357 } 3358 3359 childCount = childrenToRemove.size(); 3360 for (int j = 0; j < childCount; j++) { 3361 View child = childrenToRemove.get(j); 3362 // Note: We can not remove the view directly from CellLayoutChildren as this 3363 // does not re-mark the spaces as unoccupied. 3364 layoutParent.removeViewInLayout(child); 3365 if (child instanceof DropTarget) { 3366 mDragController.removeDropTarget((DropTarget)child); 3367 } 3368 } 3369 3370 if (childCount > 0) { 3371 layout.requestLayout(); 3372 layout.invalidate(); 3373 } 3374 } 3375 }); 3376 } 3377 } 3378 3379 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3380 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3381 for (CellLayoutChildren layout: childrenLayouts) { 3382 int childCount = layout.getChildCount(); 3383 for (int j = 0; j < childCount; j++) { 3384 final View view = layout.getChildAt(j); 3385 Object tag = view.getTag(); 3386 if (tag instanceof ShortcutInfo) { 3387 ShortcutInfo info = (ShortcutInfo)tag; 3388 // We need to check for ACTION_MAIN otherwise getComponent() might 3389 // return null for some shortcuts (for instance, for shortcuts to 3390 // web pages.) 3391 final Intent intent = info.intent; 3392 final ComponentName name = intent.getComponent(); 3393 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3394 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3395 final int appCount = apps.size(); 3396 for (int k = 0; k < appCount; k++) { 3397 ApplicationInfo app = apps.get(k); 3398 if (app.componentName.equals(name)) { 3399 info.setIcon(mIconCache.getIcon(info.intent)); 3400 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 3401 new FastBitmapDrawable(info.getIcon(mIconCache)), 3402 null, null); 3403 } 3404 } 3405 } 3406 } 3407 } 3408 } 3409 } 3410 3411 void moveToDefaultScreen(boolean animate) { 3412 if (!isSmall()) { 3413 if (animate) { 3414 snapToPage(mDefaultPage); 3415 } else { 3416 setCurrentPage(mDefaultPage); 3417 } 3418 } 3419 getChildAt(mDefaultPage).requestFocus(); 3420 } 3421 3422 @Override 3423 public void syncPages() { 3424 } 3425 3426 @Override 3427 public void syncPageItems(int page, boolean immediate) { 3428 } 3429 3430 @Override 3431 protected String getCurrentPageDescription() { 3432 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 3433 return String.format(mContext.getString(R.string.workspace_scroll_format), 3434 page + 1, getChildCount()); 3435 } 3436 3437 public void getLocationInDragLayer(int[] loc) { 3438 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 3439 } 3440 3441 void showDockDivider(boolean immediately) { 3442 final ViewGroup parent = (ViewGroup) getParent(); 3443 final View qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3444 final View dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3445 if (qsbDivider != null && dockDivider != null) { 3446 qsbDivider.setVisibility(View.VISIBLE); 3447 dockDivider.setVisibility(View.VISIBLE); 3448 if (mDividerAnimator != null) { 3449 mDividerAnimator.cancel(); 3450 mDividerAnimator = null; 3451 } 3452 if (immediately) { 3453 qsbDivider.setAlpha(1f); 3454 dockDivider.setAlpha(1f); 3455 } else { 3456 mDividerAnimator = new AnimatorSet(); 3457 mDividerAnimator.playTogether(ObjectAnimator.ofFloat(qsbDivider, "alpha", 1f), 3458 ObjectAnimator.ofFloat(dockDivider, "alpha", 1f)); 3459 mDividerAnimator.setDuration(sScrollIndicatorFadeInDuration); 3460 mDividerAnimator.start(); 3461 } 3462 } 3463 } 3464 3465 void setFadeForOverScroll(float fade) { 3466 if (!isScrollingIndicatorEnabled()) return; 3467 3468 mOverscrollFade = fade; 3469 float reducedFade = 0.5f + 0.5f * (1 - fade); 3470 final ViewGroup parent = (ViewGroup) getParent(); 3471 final ImageView dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3472 final ImageView scrollIndicator = getScrollingIndicator(); 3473 3474 cancelScrollingIndicatorAnimations(); 3475 dockDivider.setAlpha(reducedFade); 3476 scrollIndicator.setAlpha(1 - fade); 3477 } 3478 3479 void hideDockDivider(boolean immediately) { 3480 final ViewGroup parent = (ViewGroup) getParent(); 3481 final View qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3482 final View dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3483 if (qsbDivider != null && dockDivider != null) { 3484 if (mDividerAnimator != null) { 3485 mDividerAnimator.cancel(); 3486 mDividerAnimator = null; 3487 } 3488 if (immediately) { 3489 qsbDivider.setVisibility(View.GONE); 3490 dockDivider.setVisibility(View.GONE); 3491 qsbDivider.setAlpha(0f); 3492 dockDivider.setAlpha(0f); 3493 } else { 3494 mDividerAnimator = new AnimatorSet(); 3495 mDividerAnimator.playTogether(ObjectAnimator.ofFloat(qsbDivider, "alpha", 0f), 3496 ObjectAnimator.ofFloat(dockDivider, "alpha", 0f)); 3497 mDividerAnimator.addListener(new AnimatorListenerAdapter() { 3498 private boolean cancelled = false; 3499 @Override 3500 public void onAnimationCancel(android.animation.Animator animation) { 3501 cancelled = true; 3502 } 3503 @Override 3504 public void onAnimationEnd(android.animation.Animator animation) { 3505 if (!cancelled) { 3506 qsbDivider.setVisibility(View.GONE); 3507 dockDivider.setVisibility(View.GONE); 3508 } 3509 } 3510 }); 3511 mDividerAnimator.setDuration(sScrollIndicatorFadeOutDuration); 3512 mDividerAnimator.start(); 3513 } 3514 } 3515 } 3516} 3517