Workspace.java revision e6dcf2651283d9237cabace60f208f9e45e6d7d9
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 if (mChildrenLayersEnabled) { 1245 getVisiblePages(mTempVisiblePagesRange); 1246 final int leftScreen = mTempVisiblePagesRange[0]; 1247 final int rightScreen = mTempVisiblePagesRange[1]; 1248 if (leftScreen != -1 && rightScreen != -1) { 1249 // calling setChildrenLayersEnabled on a view that's not visible/rendered 1250 // causes slowdowns on some graphics cards, so we set it here to be sure 1251 // it's only called when it's safe (ie when the view will be rendered) 1252 for (int i = leftScreen; i <= rightScreen; i++) { 1253 ((ViewGroup)getPageAt(i)).setChildrenLayersEnabled(true); 1254 } 1255 } 1256 } 1257 super.dispatchDraw(canvas); 1258 1259 if (mInScrollArea && !LauncherApplication.isScreenLarge()) { 1260 final int width = getWidth(); 1261 final int height = getHeight(); 1262 final int pageHeight = getChildAt(0).getHeight(); 1263 1264 // Set the height of the outline to be the height of the page 1265 final int offset = (height - pageHeight - mPaddingTop - mPaddingBottom) / 2; 1266 final int paddingTop = mPaddingTop + offset; 1267 final int paddingBottom = mPaddingBottom + offset; 1268 1269 final CellLayout leftPage = (CellLayout) getChildAt(mCurrentPage - 1); 1270 final CellLayout rightPage = (CellLayout) getChildAt(mCurrentPage + 1); 1271 1272 if (leftPage != null && leftPage.getIsDragOverlapping()) { 1273 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left_holo); 1274 d.setBounds(mScrollX, paddingTop, mScrollX + d.getIntrinsicWidth(), 1275 height - paddingBottom); 1276 d.draw(canvas); 1277 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 1278 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right_holo); 1279 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), paddingTop, mScrollX + width, 1280 height - paddingBottom); 1281 d.draw(canvas); 1282 } 1283 } 1284 } 1285 1286 @Override 1287 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1288 if (!mLauncher.isAllAppsVisible()) { 1289 final Folder openFolder = getOpenFolder(); 1290 if (openFolder != null) { 1291 return openFolder.requestFocus(direction, previouslyFocusedRect); 1292 } else { 1293 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1294 } 1295 } 1296 return false; 1297 } 1298 1299 @Override 1300 public int getDescendantFocusability() { 1301 if (isSmall()) { 1302 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1303 } 1304 return super.getDescendantFocusability(); 1305 } 1306 1307 @Override 1308 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1309 if (!mLauncher.isAllAppsVisible()) { 1310 final Folder openFolder = getOpenFolder(); 1311 if (openFolder != null) { 1312 openFolder.addFocusables(views, direction); 1313 } else { 1314 super.addFocusables(views, direction, focusableMode); 1315 } 1316 } 1317 } 1318 1319 public boolean isSmall() { 1320 return mState == State.SMALL || mState == State.SPRING_LOADED; 1321 } 1322 1323 void enableChildrenCache(int fromPage, int toPage) { 1324 if (fromPage > toPage) { 1325 final int temp = fromPage; 1326 fromPage = toPage; 1327 toPage = temp; 1328 } 1329 1330 final int screenCount = getChildCount(); 1331 1332 fromPage = Math.max(fromPage, 0); 1333 toPage = Math.min(toPage, screenCount - 1); 1334 1335 for (int i = fromPage; i <= toPage; i++) { 1336 final CellLayout layout = (CellLayout) getChildAt(i); 1337 layout.setChildrenDrawnWithCacheEnabled(true); 1338 layout.setChildrenDrawingCacheEnabled(true); 1339 } 1340 } 1341 1342 void clearChildrenCache() { 1343 final int screenCount = getChildCount(); 1344 for (int i = 0; i < screenCount; i++) { 1345 final CellLayout layout = (CellLayout) getChildAt(i); 1346 layout.setChildrenDrawnWithCacheEnabled(false); 1347 // In software mode, we don't want the items to continue to be drawn into bitmaps 1348 if (!isHardwareAccelerated()) { 1349 layout.setChildrenDrawingCacheEnabled(false); 1350 } 1351 } 1352 } 1353 1354 private void updateChildrenLayersEnabled() { 1355 boolean small = isSmall() || mIsSwitchingState; 1356 boolean dragging = mAnimatingViewIntoPlace || mIsDragOccuring; 1357 boolean enableChildrenLayers = small || dragging || isPageMoving(); 1358 1359 if (enableChildrenLayers != mChildrenLayersEnabled) { 1360 mChildrenLayersEnabled = enableChildrenLayers; 1361 // calling setChildrenLayersEnabled on a view that's not visible/rendered 1362 // causes slowdowns on some graphics cards, so we only disable it here and leave 1363 // the enabling to dispatchDraw 1364 if (!enableChildrenLayers) { 1365 for (int i = 0; i < getPageCount(); i++) { 1366 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(false); 1367 } 1368 } 1369 } 1370 } 1371 1372 protected void onWallpaperTap(MotionEvent ev) { 1373 final int[] position = mTempCell; 1374 getLocationOnScreen(position); 1375 1376 int pointerIndex = ev.getActionIndex(); 1377 position[0] += (int) ev.getX(pointerIndex); 1378 position[1] += (int) ev.getY(pointerIndex); 1379 1380 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1381 ev.getAction() == MotionEvent.ACTION_UP 1382 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1383 position[0], position[1], 0, null); 1384 } 1385 1386 /* 1387 * This interpolator emulates the rate at which the perceived scale of an object changes 1388 * as its distance from a camera increases. When this interpolator is applied to a scale 1389 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1390 * from the camera. 1391 */ 1392 static class ZInterpolator implements TimeInterpolator { 1393 private float focalLength; 1394 1395 public ZInterpolator(float foc) { 1396 focalLength = foc; 1397 } 1398 1399 public float getInterpolation(float input) { 1400 return (1.0f - focalLength / (focalLength + input)) / 1401 (1.0f - focalLength / (focalLength + 1.0f)); 1402 } 1403 } 1404 1405 /* 1406 * The exact reverse of ZInterpolator. 1407 */ 1408 static class InverseZInterpolator implements TimeInterpolator { 1409 private ZInterpolator zInterpolator; 1410 public InverseZInterpolator(float foc) { 1411 zInterpolator = new ZInterpolator(foc); 1412 } 1413 public float getInterpolation(float input) { 1414 return 1 - zInterpolator.getInterpolation(1 - input); 1415 } 1416 } 1417 1418 /* 1419 * ZInterpolator compounded with an ease-out. 1420 */ 1421 static class ZoomOutInterpolator implements TimeInterpolator { 1422 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(0.75f); 1423 private final ZInterpolator zInterpolator = new ZInterpolator(0.13f); 1424 1425 public float getInterpolation(float input) { 1426 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1427 } 1428 } 1429 1430 /* 1431 * InvereZInterpolator compounded with an ease-out. 1432 */ 1433 static class ZoomInInterpolator implements TimeInterpolator { 1434 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1435 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1436 1437 public float getInterpolation(float input) { 1438 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1439 } 1440 } 1441 1442 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1443 1444 /* 1445 * 1446 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1447 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1448 * 1449 * These methods mark the appropriate pages as accepting drops (which alters their visual 1450 * appearance). 1451 * 1452 */ 1453 public void onDragStartedWithItem(View v) { 1454 final Canvas canvas = new Canvas(); 1455 1456 // We need to add extra padding to the bitmap to make room for the glow effect 1457 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1458 1459 // The outline is used to visualize where the item will land if dropped 1460 mDragOutline = createDragOutline(v, canvas, bitmapPadding); 1461 } 1462 1463 public void onDragStartedWithItemSpans(int spanX, int spanY, Bitmap b) { 1464 onDragStartedWithItemSpans(spanX, spanY, b, null); 1465 } 1466 1467 public void onDragStartedWithItemSpans(int spanX, int spanY, Bitmap b, Paint alphaClipPaint) { 1468 final Canvas canvas = new Canvas(); 1469 1470 // We need to add extra padding to the bitmap to make room for the glow effect 1471 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1472 1473 CellLayout cl = (CellLayout) getChildAt(0); 1474 1475 int[] size = cl.cellSpansToSize(spanX, spanY); 1476 1477 // The outline is used to visualize where the item will land if dropped 1478 mDragOutline = createDragOutline(b, canvas, bitmapPadding, size[0], size[1], alphaClipPaint); 1479 } 1480 1481 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1482 // never dragged over 1483 public void onDragStopped(boolean success) { 1484 // In the success case, DragController has already called onDragExit() 1485 if (!success) { 1486 doDragExit(null); 1487 } 1488 } 1489 1490 public void exitWidgetResizeMode() { 1491 DragLayer dragLayer = mLauncher.getDragLayer(); 1492 dragLayer.clearAllResizeFrames(); 1493 } 1494 1495 private void initAnimationArrays() { 1496 final int childCount = getChildCount(); 1497 if (mOldTranslationXs != null) return; 1498 mOldTranslationXs = new float[childCount]; 1499 mOldTranslationYs = new float[childCount]; 1500 mOldScaleXs = new float[childCount]; 1501 mOldScaleYs = new float[childCount]; 1502 mOldBackgroundAlphas = new float[childCount]; 1503 mOldBackgroundAlphaMultipliers = new float[childCount]; 1504 mOldAlphas = new float[childCount]; 1505 mOldRotationYs = new float[childCount]; 1506 mNewTranslationXs = new float[childCount]; 1507 mNewTranslationYs = new float[childCount]; 1508 mNewScaleXs = new float[childCount]; 1509 mNewScaleYs = new float[childCount]; 1510 mNewBackgroundAlphas = new float[childCount]; 1511 mNewBackgroundAlphaMultipliers = new float[childCount]; 1512 mNewAlphas = new float[childCount]; 1513 mNewRotationYs = new float[childCount]; 1514 } 1515 1516 public void changeState(State shrinkState) { 1517 changeState(shrinkState, true); 1518 } 1519 1520 void changeState(final State state, boolean animated) { 1521 changeState(state, animated, 0); 1522 } 1523 1524 void changeState(final State state, boolean animated, int delay) { 1525 if (mState == state) { 1526 return; 1527 } 1528 if (mFirstLayout) { 1529 // (mFirstLayout == "first layout has not happened yet") 1530 // cancel any pending shrinks that were set earlier 1531 mSwitchStateAfterFirstLayout = false; 1532 mStateAfterFirstLayout = state; 1533 return; 1534 } 1535 1536 // Initialize animation arrays for the first time if necessary 1537 initAnimationArrays(); 1538 1539 // Cancel any running transition animations 1540 if (mAnimator != null) mAnimator.cancel(); 1541 mAnimator = new AnimatorSet(); 1542 1543 // Stop any scrolling, move to the current page right away 1544 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1545 1546 final State oldState = mState; 1547 final boolean oldStateIsNormal = (oldState == State.NORMAL); 1548 final boolean oldStateIsSmall = (oldState == State.SMALL); 1549 mState = state; 1550 final boolean stateIsNormal = (state == State.NORMAL); 1551 final boolean stateIsSpringLoaded = (state == State.SPRING_LOADED); 1552 final boolean stateIsSmall = (state == State.SMALL); 1553 float finalScaleFactor = 1.0f; 1554 float finalBackgroundAlpha = stateIsSpringLoaded ? 1.0f : 0f; 1555 float translationX = 0; 1556 float translationY = 0; 1557 boolean zoomIn = true; 1558 1559 if (state != State.NORMAL) { 1560 finalScaleFactor = mSpringLoadedShrinkFactor - (stateIsSmall ? 0.1f : 0); 1561 if (oldStateIsNormal && stateIsSmall) { 1562 zoomIn = false; 1563 setLayoutScale(finalScaleFactor); 1564 updateChildrenLayersEnabled(); 1565 } else { 1566 finalBackgroundAlpha = 1.0f; 1567 setLayoutScale(finalScaleFactor); 1568 } 1569 } else { 1570 setLayoutScale(1.0f); 1571 } 1572 1573 final int duration = zoomIn ? 1574 getResources().getInteger(R.integer.config_workspaceUnshrinkTime) : 1575 getResources().getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1576 for (int i = 0; i < getChildCount(); i++) { 1577 final CellLayout cl = (CellLayout) getChildAt(i); 1578 float rotation = 0f; 1579 float initialAlpha = cl.getAlpha(); 1580 float finalAlphaMultiplierValue = 1f; 1581 float finalAlpha = (!mFadeInAdjacentScreens || stateIsSpringLoaded || 1582 (i == mCurrentPage)) ? 1f : 0f; 1583 1584 // Determine the pages alpha during the state transition 1585 if ((oldStateIsSmall && stateIsNormal) || 1586 (oldStateIsNormal && stateIsSmall)) { 1587 // To/from workspace - only show the current page unless the transition is not 1588 // animated and the animation end callback below doesn't run 1589 if (i == mCurrentPage || !animated) { 1590 finalAlpha = 1f; 1591 finalAlphaMultiplierValue = 0f; 1592 } else { 1593 initialAlpha = 0f; 1594 finalAlpha = 0f; 1595 } 1596 } 1597 1598 // Update the rotation of the screen (don't apply rotation on Phone UI) 1599 if (LauncherApplication.isScreenLarge()) { 1600 if (i < mCurrentPage) { 1601 rotation = WORKSPACE_ROTATION; 1602 } else if (i > mCurrentPage) { 1603 rotation = -WORKSPACE_ROTATION; 1604 } 1605 } 1606 1607 // If the screen is not xlarge, then don't rotate the CellLayouts 1608 // NOTE: If we don't update the side pages alpha, then we should not hide the side 1609 // pages. see unshrink(). 1610 if (LauncherApplication.isScreenLarge()) { 1611 translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1612 } 1613 1614 mOldAlphas[i] = initialAlpha; 1615 mNewAlphas[i] = finalAlpha; 1616 if (animated) { 1617 mOldTranslationXs[i] = cl.getTranslationX(); 1618 mOldTranslationYs[i] = cl.getTranslationY(); 1619 mOldScaleXs[i] = cl.getScaleX(); 1620 mOldScaleYs[i] = cl.getScaleY(); 1621 mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1622 mOldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1623 mOldRotationYs[i] = cl.getRotationY(); 1624 1625 mNewTranslationXs[i] = translationX; 1626 mNewTranslationYs[i] = translationY; 1627 mNewScaleXs[i] = finalScaleFactor; 1628 mNewScaleYs[i] = finalScaleFactor; 1629 mNewBackgroundAlphas[i] = finalBackgroundAlpha; 1630 mNewBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1631 mNewRotationYs[i] = rotation; 1632 } else { 1633 cl.setTranslationX(translationX); 1634 cl.setTranslationY(translationY); 1635 cl.setScaleX(finalScaleFactor); 1636 cl.setScaleY(finalScaleFactor); 1637 cl.setBackgroundAlpha(finalBackgroundAlpha); 1638 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1639 cl.setAlpha(finalAlpha); 1640 cl.setRotationY(rotation); 1641 mChangeStateAnimationListener.onAnimationEnd(null); 1642 } 1643 } 1644 1645 if (animated) { 1646 ValueAnimator animWithInterpolator = 1647 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1648 1649 if (zoomIn) { 1650 animWithInterpolator.setInterpolator(mZoomInInterpolator); 1651 } 1652 1653 animWithInterpolator.addListener(new AnimatorListenerAdapter() { 1654 @Override 1655 public void onAnimationEnd(android.animation.Animator animation) { 1656 // The above code to determine initialAlpha and finalAlpha will ensure that only 1657 // the current page is visible during (and subsequently, after) the transition 1658 // animation. If fade adjacent pages is disabled, then re-enable the page 1659 // visibility after the transition animation. 1660 if (!mFadeInAdjacentScreens && stateIsNormal && oldStateIsSmall) { 1661 for (int i = 0; i < getChildCount(); i++) { 1662 final CellLayout cl = (CellLayout) getChildAt(i); 1663 cl.setAlpha(1f); 1664 } 1665 } 1666 } 1667 }); 1668 animWithInterpolator.addUpdateListener(new LauncherAnimatorUpdateListener() { 1669 public void onAnimationUpdate(float a, float b) { 1670 mTransitionProgress = b; 1671 if (b == 0f) { 1672 // an optimization, but not required 1673 return; 1674 } 1675 invalidate(); 1676 for (int i = 0; i < getChildCount(); i++) { 1677 final CellLayout cl = (CellLayout) getChildAt(i); 1678 cl.fastInvalidate(); 1679 cl.setFastTranslationX(a * mOldTranslationXs[i] + b * mNewTranslationXs[i]); 1680 cl.setFastTranslationY(a * mOldTranslationYs[i] + b * mNewTranslationYs[i]); 1681 cl.setFastScaleX(a * mOldScaleXs[i] + b * mNewScaleXs[i]); 1682 cl.setFastScaleY(a * mOldScaleYs[i] + b * mNewScaleYs[i]); 1683 cl.setFastBackgroundAlpha( 1684 a * mOldBackgroundAlphas[i] + b * mNewBackgroundAlphas[i]); 1685 cl.setBackgroundAlphaMultiplier(a * mOldBackgroundAlphaMultipliers[i] + 1686 b * mNewBackgroundAlphaMultipliers[i]); 1687 cl.setFastAlpha(a * mOldAlphas[i] + b * mNewAlphas[i]); 1688 } 1689 } 1690 }); 1691 1692 ValueAnimator rotationAnim = 1693 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1694 rotationAnim.setInterpolator(new DecelerateInterpolator(2.0f)); 1695 rotationAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1696 public void onAnimationUpdate(float a, float b) { 1697 if (b == 0f) { 1698 // an optimization, but not required 1699 return; 1700 } 1701 for (int i = 0; i < getChildCount(); i++) { 1702 final CellLayout cl = (CellLayout) getChildAt(i); 1703 cl.setFastRotationY(a * mOldRotationYs[i] + b * mNewRotationYs[i]); 1704 } 1705 } 1706 }); 1707 1708 mAnimator.playTogether(animWithInterpolator, rotationAnim); 1709 mAnimator.setStartDelay(delay); 1710 // If we call this when we're not animated, onAnimationEnd is never called on 1711 // the listener; make sure we only use the listener when we're actually animating 1712 mAnimator.addListener(mChangeStateAnimationListener); 1713 mAnimator.start(); 1714 } 1715 1716 if (stateIsSpringLoaded) { 1717 // Right now we're covered by Apps Customize 1718 // Show the background gradient immediately, so the gradient will 1719 // be showing once AppsCustomize disappears 1720 animateBackgroundGradient(getResources().getInteger( 1721 R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, false); 1722 } else { 1723 // Fade the background gradient away 1724 animateBackgroundGradient(0f, true); 1725 } 1726 } 1727 1728 /** 1729 * Draw the View v into the given Canvas. 1730 * 1731 * @param v the view to draw 1732 * @param destCanvas the canvas to draw on 1733 * @param padding the horizontal and vertical padding to use when drawing 1734 */ 1735 private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { 1736 final Rect clipRect = mTempRect; 1737 v.getDrawingRect(clipRect); 1738 1739 boolean textVisible = false; 1740 1741 destCanvas.save(); 1742 if (v instanceof TextView && pruneToDrawable) { 1743 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1744 clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); 1745 destCanvas.translate(padding / 2, padding / 2); 1746 d.draw(destCanvas); 1747 } else { 1748 if (v instanceof FolderIcon) { 1749 // For FolderIcons the text can bleed into the icon area, and so we need to 1750 // hide the text completely (which can't be achieved by clipping). 1751 if (((FolderIcon) v).getTextVisible()) { 1752 ((FolderIcon) v).setTextVisible(false); 1753 textVisible = true; 1754 } 1755 } else if (v instanceof BubbleTextView) { 1756 final BubbleTextView tv = (BubbleTextView) v; 1757 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1758 tv.getLayout().getLineTop(0); 1759 } else if (v instanceof TextView) { 1760 final TextView tv = (TextView) v; 1761 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1762 tv.getLayout().getLineTop(0); 1763 } 1764 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1765 destCanvas.clipRect(clipRect, Op.REPLACE); 1766 v.draw(destCanvas); 1767 1768 // Restore text visibility of FolderIcon if necessary 1769 if (textVisible) { 1770 ((FolderIcon) v).setTextVisible(true); 1771 } 1772 } 1773 destCanvas.restore(); 1774 } 1775 1776 /** 1777 * Returns a new bitmap to show when the given View is being dragged around. 1778 * Responsibility for the bitmap is transferred to the caller. 1779 */ 1780 public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1781 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1782 Bitmap b; 1783 1784 if (v instanceof TextView) { 1785 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1786 b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, 1787 d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); 1788 } else { 1789 b = Bitmap.createBitmap( 1790 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1791 } 1792 1793 canvas.setBitmap(b); 1794 drawDragView(v, canvas, padding, true); 1795 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 1796 canvas.drawColor(mDragViewMultiplyColor, PorterDuff.Mode.MULTIPLY); 1797 canvas.setBitmap(null); 1798 1799 return b; 1800 } 1801 1802 /** 1803 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1804 * Responsibility for the bitmap is transferred to the caller. 1805 */ 1806 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1807 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1808 final Bitmap b = Bitmap.createBitmap( 1809 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1810 1811 canvas.setBitmap(b); 1812 drawDragView(v, canvas, padding, true); 1813 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1814 canvas.setBitmap(null); 1815 return b; 1816 } 1817 1818 /** 1819 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1820 * Responsibility for the bitmap is transferred to the caller. 1821 */ 1822 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h) { 1823 return createDragOutline(orig, canvas, padding, w, h, null); 1824 } 1825 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h, 1826 Paint alphaClipPaint) { 1827 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1828 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1829 canvas.setBitmap(b); 1830 1831 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 1832 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 1833 (h - padding) / (float) orig.getHeight()); 1834 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 1835 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 1836 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 1837 1838 // center the image 1839 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 1840 1841 Paint p = new Paint(); 1842 p.setFilterBitmap(true); 1843 canvas.drawBitmap(orig, src, dst, p); 1844 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor, 1845 alphaClipPaint); 1846 canvas.setBitmap(null); 1847 1848 return b; 1849 } 1850 1851 /** 1852 * Creates a drag outline to represent a drop (that we don't have the actual information for 1853 * yet). May be changed in the future to alter the drop outline slightly depending on the 1854 * clip description mime data. 1855 */ 1856 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 1857 Resources r = getResources(); 1858 final int outlineColor = r.getColor(android.R.color.holo_blue_light); 1859 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 1860 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 1861 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 1862 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 1863 final Bitmap b = Bitmap.createBitmap( 1864 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 1865 1866 canvas.setBitmap(b); 1867 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 1868 rectRadius, rectRadius, mExternalDragOutlinePaint); 1869 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1870 canvas.setBitmap(null); 1871 return b; 1872 } 1873 1874 void startDrag(CellLayout.CellInfo cellInfo) { 1875 View child = cellInfo.cell; 1876 1877 // Make sure the drag was started by a long press as opposed to a long click. 1878 if (!child.isInTouchMode()) { 1879 return; 1880 } 1881 1882 mDragInfo = cellInfo; 1883 child.setVisibility(GONE); 1884 1885 child.clearFocus(); 1886 child.setPressed(false); 1887 1888 final Canvas canvas = new Canvas(); 1889 1890 // We need to add extra padding to the bitmap to make room for the glow effect 1891 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1892 1893 // The outline is used to visualize where the item will land if dropped 1894 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 1895 beginDragShared(child, this); 1896 } 1897 1898 public void beginDragShared(View child, DragSource source) { 1899 Resources r = getResources(); 1900 1901 // We need to add extra padding to the bitmap to make room for the glow effect 1902 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1903 1904 // The drag bitmap follows the touch point around on the screen 1905 final Bitmap b = createDragBitmap(child, new Canvas(), bitmapPadding); 1906 1907 final int bmpWidth = b.getWidth(); 1908 1909 mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 1910 final int dragLayerX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 1911 int dragLayerY = mTempXY[1] - bitmapPadding / 2; 1912 1913 Point dragVisualizeOffset = null; 1914 Rect dragRect = null; 1915 if (child instanceof BubbleTextView || child instanceof PagedViewIcon) { 1916 int iconSize = r.getDimensionPixelSize(R.dimen.app_icon_size); 1917 int iconPaddingTop = r.getDimensionPixelSize(R.dimen.app_icon_padding_top); 1918 int top = child.getPaddingTop(); 1919 int left = (bmpWidth - iconSize) / 2; 1920 int right = left + iconSize; 1921 int bottom = top + iconSize; 1922 dragLayerY += top; 1923 // Note: The drag region is used to calculate drag layer offsets, but the 1924 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 1925 dragVisualizeOffset = new Point(-bitmapPadding / 2, iconPaddingTop - bitmapPadding / 2); 1926 dragRect = new Rect(left, top, right, bottom); 1927 } else if (child instanceof FolderIcon) { 1928 int previewSize = r.getDimensionPixelSize(R.dimen.folder_preview_size); 1929 dragRect = new Rect(0, 0, child.getWidth(), previewSize); 1930 } 1931 1932 // Clear the pressed state if necessary 1933 if (child instanceof BubbleTextView) { 1934 BubbleTextView icon = (BubbleTextView) child; 1935 icon.clearPressedOrFocusedBackground(); 1936 } 1937 1938 mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 1939 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect); 1940 b.recycle(); 1941 } 1942 1943 void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, int screen, 1944 int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { 1945 View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); 1946 1947 final int[] cellXY = new int[2]; 1948 target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1949 addInScreen(view, container, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1950 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, cellXY[0], 1951 cellXY[1]); 1952 } 1953 1954 public boolean transitionStateShouldAllowDrop() { 1955 return (!isSwitchingState() || mTransitionProgress > 0.5f); 1956 } 1957 1958 /** 1959 * {@inheritDoc} 1960 */ 1961 public boolean acceptDrop(DragObject d) { 1962 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1963 if (d.dragSource != this) { 1964 // Don't accept the drop if we're not over a screen at time of drop 1965 if (mDragTargetLayout == null) { 1966 return false; 1967 } 1968 if (!transitionStateShouldAllowDrop()) return false; 1969 1970 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 1971 d.dragView, mDragViewVisualCenter); 1972 1973 // We want the point to be mapped to the dragTarget. 1974 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 1975 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 1976 } else { 1977 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 1978 } 1979 1980 int spanX = 1; 1981 int spanY = 1; 1982 View ignoreView = null; 1983 if (mDragInfo != null) { 1984 final CellLayout.CellInfo dragCellInfo = mDragInfo; 1985 spanX = dragCellInfo.spanX; 1986 spanY = dragCellInfo.spanY; 1987 ignoreView = dragCellInfo.cell; 1988 } else { 1989 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 1990 spanX = dragInfo.spanX; 1991 spanY = dragInfo.spanY; 1992 } 1993 1994 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 1995 (int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell); 1996 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, true)) { 1997 return true; 1998 } 1999 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, 2000 mTargetCell)) { 2001 return true; 2002 } 2003 2004 2005 // Don't accept the drop if there's no room for the item 2006 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 2007 mLauncher.showOutOfSpaceMessage(); 2008 return false; 2009 } 2010 } 2011 return true; 2012 } 2013 2014 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, 2015 boolean considerTimeout) { 2016 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2017 2018 boolean hasntMoved = false; 2019 if (mDragInfo != null) { 2020 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2021 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2022 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2023 } 2024 2025 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2026 return false; 2027 } 2028 2029 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2030 boolean willBecomeShortcut = 2031 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2032 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2033 2034 return (aboveShortcut && willBecomeShortcut); 2035 } 2036 2037 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell) { 2038 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2039 if (dropOverView instanceof FolderIcon) { 2040 FolderIcon fi = (FolderIcon) dropOverView; 2041 if (fi.acceptDrop(dragInfo)) { 2042 return true; 2043 } 2044 } 2045 return false; 2046 } 2047 2048 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2049 int[] targetCell, boolean external, DragView dragView, Runnable postAnimationRunnable) { 2050 View v = target.getChildAt(targetCell[0], targetCell[1]); 2051 boolean hasntMoved = false; 2052 if (mDragInfo != null) { 2053 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2054 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2055 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2056 } 2057 2058 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2059 mCreateUserFolderOnDrop = false; 2060 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 2061 2062 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2063 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2064 2065 if (aboveShortcut && willBecomeShortcut) { 2066 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2067 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2068 // if the drag started here, we need to remove it from the workspace 2069 if (!external) { 2070 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2071 } 2072 2073 Rect folderLocation = new Rect(); 2074 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2075 target.removeView(v); 2076 2077 FolderIcon fi = 2078 mLauncher.addFolder(target, container, screen, targetCell[0], targetCell[1]); 2079 destInfo.cellX = -1; 2080 destInfo.cellY = -1; 2081 sourceInfo.cellX = -1; 2082 sourceInfo.cellY = -1; 2083 2084 // If the dragView is null, we can't animate 2085 boolean animate = dragView != null; 2086 if (animate) { 2087 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2088 postAnimationRunnable); 2089 } else { 2090 fi.addItem(destInfo); 2091 fi.addItem(sourceInfo); 2092 } 2093 return true; 2094 } 2095 return false; 2096 } 2097 2098 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2099 DragObject d, boolean external) { 2100 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2101 if (dropOverView instanceof FolderIcon) { 2102 FolderIcon fi = (FolderIcon) dropOverView; 2103 if (fi.acceptDrop(d.dragInfo)) { 2104 fi.onDrop(d); 2105 2106 // if the drag started here, we need to remove it from the workspace 2107 if (!external) { 2108 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2109 } 2110 return true; 2111 } 2112 } 2113 return false; 2114 } 2115 2116 public void onDrop(DragObject d) { 2117 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2118 mDragViewVisualCenter); 2119 2120 // We want the point to be mapped to the dragTarget. 2121 if (mDragTargetLayout != null) { 2122 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2123 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2124 } else { 2125 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2126 } 2127 } 2128 2129 CellLayout dropTargetLayout = mDragTargetLayout; 2130 2131 int snapScreen = -1; 2132 if (d.dragSource != this) { 2133 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2134 (int) mDragViewVisualCenter[1] }; 2135 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2136 } else if (mDragInfo != null) { 2137 final View cell = mDragInfo.cell; 2138 2139 if (dropTargetLayout != null) { 2140 // Move internally 2141 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2142 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2143 long container = hasMovedIntoHotseat ? 2144 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2145 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2146 int screen = (mTargetCell[0] < 0) ? 2147 mDragInfo.screen : indexOfChild(dropTargetLayout); 2148 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2149 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2150 // First we find the cell nearest to point at which the item is 2151 // dropped, without any consideration to whether there is an item there. 2152 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2153 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2154 // If the item being dropped is a shortcut and the nearest drop 2155 // cell also contains a shortcut, then create a folder with the two shortcuts. 2156 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2157 dropTargetLayout, mTargetCell, false, d.dragView, null)) { 2158 return; 2159 } 2160 2161 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, d, false)) { 2162 return; 2163 } 2164 2165 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2166 // we need to find the nearest cell location that is vacant 2167 mTargetCell = findNearestVacantArea((int) mDragViewVisualCenter[0], 2168 (int) mDragViewVisualCenter[1], mDragInfo.spanX, mDragInfo.spanY, cell, 2169 dropTargetLayout, mTargetCell); 2170 2171 if (mCurrentPage != screen && !hasMovedIntoHotseat) { 2172 snapScreen = screen; 2173 snapToPage(screen); 2174 } 2175 2176 if (mTargetCell[0] >= 0 && mTargetCell[1] >= 0) { 2177 if (hasMovedLayouts) { 2178 // Reparent the view 2179 getParentCellLayoutForView(cell).removeView(cell); 2180 addInScreen(cell, container, screen, mTargetCell[0], mTargetCell[1], 2181 mDragInfo.spanX, mDragInfo.spanY); 2182 } 2183 2184 // update the item's position after drop 2185 final ItemInfo info = (ItemInfo) cell.getTag(); 2186 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2187 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 2188 lp.cellX = mTargetCell[0]; 2189 lp.cellY = mTargetCell[1]; 2190 cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screen, 2191 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2192 2193 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2194 cell instanceof LauncherAppWidgetHostView) { 2195 final CellLayout cellLayout = dropTargetLayout; 2196 // We post this call so that the widget has a chance to be placed 2197 // in its final location 2198 2199 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2200 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2201 if (pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2202 final Runnable resizeRunnable = new Runnable() { 2203 public void run() { 2204 DragLayer dragLayer = mLauncher.getDragLayer(); 2205 dragLayer.addResizeFrame(info, hostView, cellLayout); 2206 } 2207 }; 2208 post(new Runnable() { 2209 public void run() { 2210 if (!isPageMoving()) { 2211 resizeRunnable.run(); 2212 } else { 2213 mDelayedResizeRunnable = resizeRunnable; 2214 } 2215 } 2216 }); 2217 } 2218 } 2219 2220 LauncherModel.moveItemInDatabase(mLauncher, info, container, screen, lp.cellX, 2221 lp.cellY); 2222 } 2223 } 2224 2225 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2226 2227 // Prepare it to be animated into its new position 2228 // This must be called after the view has been re-parented 2229 final Runnable disableHardwareLayersRunnable = new Runnable() { 2230 @Override 2231 public void run() { 2232 mAnimatingViewIntoPlace = false; 2233 updateChildrenLayersEnabled(); 2234 } 2235 }; 2236 mAnimatingViewIntoPlace = true; 2237 if (d.dragView.hasDrawn()) { 2238 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2239 setFinalScrollForPageChange(snapScreen); 2240 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2241 disableHardwareLayersRunnable); 2242 resetFinalScrollForPageChange(snapScreen); 2243 } else { 2244 cell.setVisibility(VISIBLE); 2245 } 2246 parent.onDropChild(cell); 2247 } 2248 } 2249 2250 public void setFinalScrollForPageChange(int screen) { 2251 if (screen >= 0) { 2252 mSavedScrollX = getScrollX(); 2253 CellLayout cl = (CellLayout) getChildAt(screen); 2254 mSavedTranslationX = cl.getTranslationX(); 2255 mSavedRotationY = cl.getRotationY(); 2256 final int newX = getChildOffset(screen) - getRelativeChildOffset(screen); 2257 setScrollX(newX); 2258 cl.setTranslationX(0f); 2259 cl.setRotationY(0f); 2260 } 2261 } 2262 2263 public void resetFinalScrollForPageChange(int screen) { 2264 if (screen >= 0) { 2265 CellLayout cl = (CellLayout) getChildAt(screen); 2266 setScrollX(mSavedScrollX); 2267 cl.setTranslationX(mSavedTranslationX); 2268 cl.setRotationY(mSavedRotationY); 2269 } 2270 } 2271 2272 public void getViewLocationRelativeToSelf(View v, int[] location) { 2273 getLocationInWindow(location); 2274 int x = location[0]; 2275 int y = location[1]; 2276 2277 v.getLocationInWindow(location); 2278 int vX = location[0]; 2279 int vY = location[1]; 2280 2281 location[0] = vX - x; 2282 location[1] = vY - y; 2283 } 2284 2285 public void onDragEnter(DragObject d) { 2286 if (mDragTargetLayout != null) { 2287 mDragTargetLayout.setIsDragOverlapping(false); 2288 mDragTargetLayout.onDragExit(); 2289 } 2290 mDragTargetLayout = getCurrentDropLayout(); 2291 mDragTargetLayout.setIsDragOverlapping(true); 2292 mDragTargetLayout.onDragEnter(); 2293 2294 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2295 // don't need to show the outlines 2296 if (LauncherApplication.isScreenLarge()) { 2297 showOutlines(); 2298 } 2299 } 2300 2301 private void doDragExit(DragObject d) { 2302 // Clean up folders 2303 cleanupFolderCreation(d); 2304 2305 // Reset the scroll area and previous drag target 2306 onResetScrollArea(); 2307 2308 if (mDragTargetLayout != null) { 2309 mDragTargetLayout.setIsDragOverlapping(false); 2310 mDragTargetLayout.onDragExit(); 2311 } 2312 mLastDragOverView = null; 2313 2314 if (!mIsPageMoving) { 2315 hideOutlines(); 2316 } 2317 } 2318 2319 public void onDragExit(DragObject d) { 2320 doDragExit(d); 2321 } 2322 2323 public DropTarget getDropTargetDelegate(DragObject d) { 2324 return null; 2325 } 2326 2327 /** 2328 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 2329 * in the returned structure related to the widgets that match the drop (or a null list if it is 2330 * a shortcut drop). If the drop is not accepted then a null structure is returned. 2331 */ 2332 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 2333 final LauncherModel model = mLauncher.getModel(); 2334 final ClipDescription desc = event.getClipDescription(); 2335 final int mimeTypeCount = desc.getMimeTypeCount(); 2336 for (int i = 0; i < mimeTypeCount; ++i) { 2337 final String mimeType = desc.getMimeType(i); 2338 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 2339 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 2340 } else { 2341 final List<WidgetMimeTypeHandlerData> widgets = 2342 model.resolveWidgetsForMimeType(mContext, mimeType); 2343 if (widgets.size() > 0) { 2344 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 2345 } 2346 } 2347 } 2348 return null; 2349 } 2350 2351 /** 2352 * Global drag and drop handler 2353 */ 2354 @Override 2355 public boolean onDragEvent(DragEvent event) { 2356 final ClipDescription desc = event.getClipDescription(); 2357 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 2358 final int[] pos = new int[2]; 2359 layout.getLocationOnScreen(pos); 2360 // We need to offset the drag coordinates to layout coordinate space 2361 final int x = (int) event.getX() - pos[0]; 2362 final int y = (int) event.getY() - pos[1]; 2363 2364 switch (event.getAction()) { 2365 case DragEvent.ACTION_DRAG_STARTED: { 2366 // Validate this drag 2367 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2368 if (test != null) { 2369 boolean isShortcut = (test.second == null); 2370 if (isShortcut) { 2371 // Check if we have enough space on this screen to add a new shortcut 2372 if (!layout.findCellForSpan(pos, 1, 1)) { 2373 mLauncher.showOutOfSpaceMessage(); 2374 return false; 2375 } 2376 } 2377 } else { 2378 // Show error message if we couldn't accept any of the items 2379 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 2380 Toast.LENGTH_SHORT).show(); 2381 return false; 2382 } 2383 2384 // Create the drag outline 2385 // We need to add extra padding to the bitmap to make room for the glow effect 2386 final Canvas canvas = new Canvas(); 2387 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2388 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 2389 2390 // Show the current page outlines to indicate that we can accept this drop 2391 showOutlines(); 2392 layout.onDragEnter(); 2393 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1, null, null); 2394 2395 return true; 2396 } 2397 case DragEvent.ACTION_DRAG_LOCATION: 2398 // Visualize the drop location 2399 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1, null, null); 2400 return true; 2401 case DragEvent.ACTION_DROP: { 2402 // Try and add any shortcuts 2403 final LauncherModel model = mLauncher.getModel(); 2404 final ClipData data = event.getClipData(); 2405 2406 // We assume that the mime types are ordered in descending importance of 2407 // representation. So we enumerate the list of mime types and alert the 2408 // user if any widgets can handle the drop. Only the most preferred 2409 // representation will be handled. 2410 pos[0] = x; 2411 pos[1] = y; 2412 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2413 if (test != null) { 2414 final int index = test.first; 2415 final List<WidgetMimeTypeHandlerData> widgets = test.second; 2416 final boolean isShortcut = (widgets == null); 2417 final String mimeType = desc.getMimeType(index); 2418 if (isShortcut) { 2419 final Intent intent = data.getItemAt(index).getIntent(); 2420 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 2421 onDropExternal(new int[] { x, y }, info, layout, false); 2422 } else { 2423 if (widgets.size() == 1) { 2424 // If there is only one item, then go ahead and add and configure 2425 // that widget 2426 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 2427 final PendingAddWidgetInfo createInfo = 2428 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 2429 mLauncher.addAppWidgetFromDrop(createInfo, 2430 LauncherSettings.Favorites.CONTAINER_DESKTOP, mCurrentPage, null, pos); 2431 } else { 2432 // Show the widget picker dialog if there is more than one widget 2433 // that can handle this data type 2434 final InstallWidgetReceiver.WidgetListAdapter adapter = 2435 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 2436 data, widgets, layout, mCurrentPage, pos); 2437 final AlertDialog.Builder builder = 2438 new AlertDialog.Builder(mContext); 2439 builder.setAdapter(adapter, adapter); 2440 builder.setCancelable(true); 2441 builder.setTitle(mContext.getString( 2442 R.string.external_drop_widget_pick_title)); 2443 builder.setIcon(R.drawable.ic_no_applications); 2444 builder.show(); 2445 } 2446 } 2447 } 2448 return true; 2449 } 2450 case DragEvent.ACTION_DRAG_ENDED: 2451 // Hide the page outlines after the drop 2452 layout.onDragExit(); 2453 hideOutlines(); 2454 return true; 2455 } 2456 return super.onDragEvent(event); 2457 } 2458 2459 /* 2460 * 2461 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2462 * coordinate space. The argument xy is modified with the return result. 2463 * 2464 */ 2465 void mapPointFromSelfToChild(View v, float[] xy) { 2466 mapPointFromSelfToChild(v, xy, null); 2467 } 2468 2469 /* 2470 * 2471 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2472 * coordinate space. The argument xy is modified with the return result. 2473 * 2474 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2475 * computing it itself; we use this to avoid redundant matrix inversions in 2476 * findMatchingPageForDragOver 2477 * 2478 */ 2479 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2480 if (cachedInverseMatrix == null) { 2481 v.getMatrix().invert(mTempInverseMatrix); 2482 cachedInverseMatrix = mTempInverseMatrix; 2483 } 2484 xy[0] = xy[0] + mScrollX - v.getLeft(); 2485 xy[1] = xy[1] + mScrollY - v.getTop(); 2486 cachedInverseMatrix.mapPoints(xy); 2487 } 2488 2489 /* 2490 * Maps a point from the Workspace's coordinate system to another sibling view's. (Workspace 2491 * covers the full screen) 2492 */ 2493 void mapPointFromSelfToSibling(View v, float[] xy) { 2494 xy[0] = xy[0] - v.getLeft(); 2495 xy[1] = xy[1] - v.getTop(); 2496 } 2497 2498 /* 2499 * 2500 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2501 * the parent View's coordinate space. The argument xy is modified with the return result. 2502 * 2503 */ 2504 void mapPointFromChildToSelf(View v, float[] xy) { 2505 v.getMatrix().mapPoints(xy); 2506 xy[0] -= (mScrollX - v.getLeft()); 2507 xy[1] -= (mScrollY - v.getTop()); 2508 } 2509 2510 static private float squaredDistance(float[] point1, float[] point2) { 2511 float distanceX = point1[0] - point2[0]; 2512 float distanceY = point2[1] - point2[1]; 2513 return distanceX * distanceX + distanceY * distanceY; 2514 } 2515 2516 /* 2517 * 2518 * Returns true if the passed CellLayout cl overlaps with dragView 2519 * 2520 */ 2521 boolean overlaps(CellLayout cl, DragView dragView, 2522 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2523 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2524 final float[] draggedItemTopLeft = mTempDragCoordinates; 2525 draggedItemTopLeft[0] = dragViewX; 2526 draggedItemTopLeft[1] = dragViewY; 2527 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2528 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2529 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2530 2531 // Transform the dragged item's top left coordinates 2532 // to the CellLayout's local coordinates 2533 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2534 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2535 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2536 2537 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2538 // Transform the dragged item's bottom right coordinates 2539 // to the CellLayout's local coordinates 2540 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2541 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2542 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2543 2544 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2545 float overlap = (overlapRegionRight - overlapRegionLeft) * 2546 (overlapRegionBottom - overlapRegionTop); 2547 if (overlap > 0) { 2548 return true; 2549 } 2550 } 2551 } 2552 return false; 2553 } 2554 2555 /* 2556 * 2557 * This method returns the CellLayout that is currently being dragged to. In order to drag 2558 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2559 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2560 * 2561 * Return null if no CellLayout is currently being dragged over 2562 * 2563 */ 2564 private CellLayout findMatchingPageForDragOver( 2565 DragView dragView, float originX, float originY, boolean exact) { 2566 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2567 // with the item being dragged and then choose the one that's closest to the touch point 2568 final int screenCount = getChildCount(); 2569 CellLayout bestMatchingScreen = null; 2570 float smallestDistSoFar = Float.MAX_VALUE; 2571 2572 for (int i = 0; i < screenCount; i++) { 2573 CellLayout cl = (CellLayout) getChildAt(i); 2574 2575 final float[] touchXy = {originX, originY}; 2576 // Transform the touch coordinates to the CellLayout's local coordinates 2577 // If the touch point is within the bounds of the cell layout, we can return immediately 2578 cl.getMatrix().invert(mTempInverseMatrix); 2579 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2580 2581 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2582 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2583 return cl; 2584 } 2585 2586 if (!exact && overlaps(cl, dragView, (int) originX, (int) originY, mTempInverseMatrix)) { 2587 // Get the center of the cell layout in screen coordinates 2588 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2589 cellLayoutCenter[0] = cl.getWidth()/2; 2590 cellLayoutCenter[1] = cl.getHeight()/2; 2591 mapPointFromChildToSelf(cl, cellLayoutCenter); 2592 2593 touchXy[0] = originX; 2594 touchXy[1] = originY; 2595 2596 // Calculate the distance between the center of the CellLayout 2597 // and the touch point 2598 float dist = squaredDistance(touchXy, cellLayoutCenter); 2599 2600 if (dist < smallestDistSoFar) { 2601 smallestDistSoFar = dist; 2602 bestMatchingScreen = cl; 2603 } 2604 } 2605 } 2606 return bestMatchingScreen; 2607 } 2608 2609 // This is used to compute the visual center of the dragView. This point is then 2610 // used to visualize drop locations and determine where to drop an item. The idea is that 2611 // the visual center represents the user's interpretation of where the item is, and hence 2612 // is the appropriate point to use when determining drop location. 2613 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2614 DragView dragView, float[] recycle) { 2615 float res[]; 2616 if (recycle == null) { 2617 res = new float[2]; 2618 } else { 2619 res = recycle; 2620 } 2621 2622 // First off, the drag view has been shifted in a way that is not represented in the 2623 // x and y values or the x/yOffsets. Here we account for that shift. 2624 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2625 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2626 2627 // These represent the visual top and left of drag view if a dragRect was provided. 2628 // If a dragRect was not provided, then they correspond to the actual view left and 2629 // top, as the dragRect is in that case taken to be the entire dragView. 2630 // R.dimen.dragViewOffsetY. 2631 int left = x - xOffset; 2632 int top = y - yOffset; 2633 2634 // In order to find the visual center, we shift by half the dragRect 2635 res[0] = left + dragView.getDragRegion().width() / 2; 2636 res[1] = top + dragView.getDragRegion().height() / 2; 2637 2638 return res; 2639 } 2640 2641 private boolean isDragWidget(DragObject d) { 2642 return (d.dragInfo instanceof LauncherAppWidgetInfo || 2643 d.dragInfo instanceof PendingAddWidgetInfo); 2644 } 2645 private boolean isExternalDragWidget(DragObject d) { 2646 return d.dragSource != this && isDragWidget(d); 2647 } 2648 2649 public void onDragOver(DragObject d) { 2650 // Skip drag over events while we are dragging over side pages 2651 if (mInScrollArea) return; 2652 if (mIsSwitchingState) return; 2653 2654 Rect r = new Rect(); 2655 CellLayout layout = null; 2656 ItemInfo item = (ItemInfo) d.dragInfo; 2657 2658 // Ensure that we have proper spans for the item that we are dropping 2659 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2660 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2661 d.dragView, mDragViewVisualCenter); 2662 2663 // Identify whether we have dragged over a side page 2664 if (isSmall()) { 2665 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 2666 mLauncher.getHotseat().getHitRect(r); 2667 if (r.contains(d.x, d.y)) { 2668 layout = mLauncher.getHotseat().getLayout(); 2669 } 2670 } 2671 if (layout == null) { 2672 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, true); 2673 } 2674 if (layout != mDragTargetLayout) { 2675 // Cancel all intermediate folder states 2676 cleanupFolderCreation(d); 2677 2678 if (mDragTargetLayout != null) { 2679 mDragTargetLayout.setIsDragOverlapping(false); 2680 mDragTargetLayout.onDragExit(); 2681 } 2682 mDragTargetLayout = layout; 2683 if (mDragTargetLayout != null) { 2684 mDragTargetLayout.setIsDragOverlapping(true); 2685 mDragTargetLayout.onDragEnter(); 2686 } else { 2687 mLastDragOverView = null; 2688 } 2689 2690 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 2691 if (isInSpringLoadedMode) { 2692 if (mLauncher.isHotseatLayout(layout)) { 2693 mSpringLoadedDragController.cancel(); 2694 } else { 2695 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2696 } 2697 } 2698 } 2699 } else { 2700 // Test to see if we are over the hotseat otherwise just use the current page 2701 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 2702 mLauncher.getHotseat().getHitRect(r); 2703 if (r.contains(d.x, d.y)) { 2704 layout = mLauncher.getHotseat().getLayout(); 2705 } 2706 } 2707 if (layout == null) { 2708 layout = getCurrentDropLayout(); 2709 } 2710 if (layout != mDragTargetLayout) { 2711 if (mDragTargetLayout != null) { 2712 mDragTargetLayout.setIsDragOverlapping(false); 2713 mDragTargetLayout.onDragExit(); 2714 } 2715 mDragTargetLayout = layout; 2716 mDragTargetLayout.setIsDragOverlapping(true); 2717 mDragTargetLayout.onDragEnter(); 2718 } 2719 } 2720 2721 // Handle the drag over 2722 if (mDragTargetLayout != null) { 2723 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2724 2725 // We want the point to be mapped to the dragTarget. 2726 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2727 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2728 } else { 2729 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2730 } 2731 ItemInfo info = (ItemInfo) d.dragInfo; 2732 2733 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2734 (int) mDragViewVisualCenter[1], 1, 1, mDragTargetLayout, mTargetCell); 2735 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2736 mTargetCell[1]); 2737 2738 boolean userFolderPending = willCreateUserFolder(info, mDragTargetLayout, 2739 mTargetCell, false); 2740 boolean isOverFolder = dragOverView instanceof FolderIcon; 2741 if (dragOverView != mLastDragOverView) { 2742 cancelFolderCreation(); 2743 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2744 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2745 } 2746 } 2747 2748 if (userFolderPending && dragOverView != mLastDragOverView) { 2749 mFolderCreationAlarm.setOnAlarmListener(new 2750 FolderCreationAlarmListener(mDragTargetLayout, mTargetCell[0], mTargetCell[1])); 2751 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2752 } 2753 2754 if (dragOverView != mLastDragOverView && isOverFolder) { 2755 ((FolderIcon) dragOverView).onDragEnter(d.dragInfo); 2756 if (mDragTargetLayout != null) { 2757 mDragTargetLayout.clearDragOutlines(); 2758 } 2759 } 2760 mLastDragOverView = dragOverView; 2761 2762 if (!mCreateUserFolderOnDrop && !isOverFolder) { 2763 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2764 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2765 item.spanX, item.spanY, d.dragView.getDragVisualizeOffset(), 2766 d.dragView.getDragRegion()); 2767 } 2768 } 2769 } 2770 2771 private void cleanupFolderCreation(DragObject d) { 2772 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2773 mDragFolderRingAnimator.animateToNaturalState(); 2774 } 2775 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2776 if (d != null) { 2777 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2778 } 2779 } 2780 mFolderCreationAlarm.cancelAlarm(); 2781 } 2782 2783 private void cancelFolderCreation() { 2784 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2785 mDragFolderRingAnimator.animateToNaturalState(); 2786 } 2787 mCreateUserFolderOnDrop = false; 2788 mFolderCreationAlarm.cancelAlarm(); 2789 } 2790 2791 class FolderCreationAlarmListener implements OnAlarmListener { 2792 CellLayout layout; 2793 int cellX; 2794 int cellY; 2795 2796 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 2797 this.layout = layout; 2798 this.cellX = cellX; 2799 this.cellY = cellY; 2800 } 2801 2802 public void onAlarm(Alarm alarm) { 2803 if (mDragFolderRingAnimator == null) { 2804 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 2805 } 2806 mDragFolderRingAnimator.setCell(cellX, cellY); 2807 mDragFolderRingAnimator.setCellLayout(layout); 2808 mDragFolderRingAnimator.animateToAcceptState(); 2809 layout.showFolderAccept(mDragFolderRingAnimator); 2810 layout.clearDragOutlines(); 2811 mCreateUserFolderOnDrop = true; 2812 } 2813 } 2814 2815 @Override 2816 public void getHitRect(Rect outRect) { 2817 // We want the workspace to have the whole area of the display (it will find the correct 2818 // cell layout to drop to in the existing drag/drop logic. 2819 outRect.set(0, 0, mDisplayWidth, mDisplayHeight); 2820 } 2821 2822 /** 2823 * Add the item specified by dragInfo to the given layout. 2824 * @return true if successful 2825 */ 2826 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2827 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2828 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2829 return true; 2830 } 2831 mLauncher.showOutOfSpaceMessage(); 2832 return false; 2833 } 2834 2835 private void onDropExternal(int[] touchXY, Object dragInfo, 2836 CellLayout cellLayout, boolean insertAtFirst) { 2837 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 2838 } 2839 2840 /** 2841 * Drop an item that didn't originate on one of the workspace screens. 2842 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2843 * come from another app altogether. 2844 * 2845 * NOTE: This can also be called when we are outside of a drag event, when we want 2846 * to add an item to one of the workspace screens. 2847 */ 2848 private void onDropExternal(final int[] touchXY, final Object dragInfo, 2849 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 2850 final Runnable exitSpringLoadedRunnable = new Runnable() { 2851 @Override 2852 public void run() { 2853 mLauncher.exitSpringLoadedDragModeDelayed(true, false); 2854 } 2855 }; 2856 2857 ItemInfo info = (ItemInfo) dragInfo; 2858 int spanX = info.spanX; 2859 int spanY = info.spanY; 2860 if (mDragInfo != null) { 2861 spanX = mDragInfo.spanX; 2862 spanY = mDragInfo.spanY; 2863 } 2864 2865 final long container = mLauncher.isHotseatLayout(cellLayout) ? 2866 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2867 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2868 final int screen = indexOfChild(cellLayout); 2869 if (!mLauncher.isHotseatLayout(cellLayout) && screen != mCurrentPage 2870 && mState != State.SPRING_LOADED) { 2871 snapToPage(screen); 2872 } 2873 2874 if (info instanceof PendingAddItemInfo) { 2875 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 2876 2877 boolean findNearestVacantCell = true; 2878 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 2879 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 2880 cellLayout, mTargetCell); 2881 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, 2882 true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 2883 mDragTargetLayout, mTargetCell)) { 2884 findNearestVacantCell = false; 2885 } 2886 } 2887 if (findNearestVacantCell) { 2888 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], spanX, spanY, null, 2889 cellLayout, mTargetCell); 2890 } 2891 2892 Runnable onAnimationCompleteRunnable = new Runnable() { 2893 @Override 2894 public void run() { 2895 // When dragging and dropping from customization tray, we deal with creating 2896 // widgets/shortcuts/folders in a slightly different way 2897 switch (pendingInfo.itemType) { 2898 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 2899 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, 2900 container, screen, mTargetCell, null); 2901 break; 2902 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2903 mLauncher.processShortcutFromDrop(pendingInfo.componentName, 2904 container, screen, mTargetCell, null); 2905 break; 2906 default: 2907 throw new IllegalStateException("Unknown item type: " + 2908 pendingInfo.itemType); 2909 } 2910 cellLayout.onDragExit(); 2911 } 2912 }; 2913 2914 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 2915 // location and size on the home screen. 2916 int loc[] = new int[2]; 2917 cellLayout.cellToPoint(mTargetCell[0], mTargetCell[1], loc); 2918 2919 RectF r = new RectF(); 2920 cellLayout.cellToRect(mTargetCell[0], mTargetCell[1], spanX, spanY, r); 2921 setFinalTransitionTransform(cellLayout); 2922 float cellLayoutScale = 2923 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(cellLayout, loc); 2924 resetTransitionTransform(cellLayout); 2925 2926 float dragViewScale = r.width() / d.dragView.getMeasuredWidth(); 2927 // The animation will scale the dragView about its center, so we need to center about 2928 // the final location. 2929 loc[0] -= (d.dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 2930 loc[1] -= (d.dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 2931 2932 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, loc, 2933 dragViewScale * cellLayoutScale, onAnimationCompleteRunnable); 2934 } else { 2935 // This is for other drag/drop cases, like dragging from All Apps 2936 View view = null; 2937 2938 switch (info.itemType) { 2939 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 2940 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2941 if (info.container == NO_ID && info instanceof ApplicationInfo) { 2942 // Came from all apps -- make a copy 2943 info = new ShortcutInfo((ApplicationInfo) info); 2944 } 2945 view = mLauncher.createShortcut(R.layout.application, cellLayout, 2946 (ShortcutInfo) info); 2947 break; 2948 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 2949 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 2950 (FolderInfo) info, mIconCache); 2951 break; 2952 default: 2953 throw new IllegalStateException("Unknown item type: " + info.itemType); 2954 } 2955 2956 // First we find the cell nearest to point at which the item is 2957 // dropped, without any consideration to whether there is an item there. 2958 if (touchXY != null) { 2959 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 2960 cellLayout, mTargetCell); 2961 d.postAnimationRunnable = exitSpringLoadedRunnable; 2962 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, true, 2963 d.dragView, d.postAnimationRunnable)) { 2964 return; 2965 } 2966 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, d, true)) { 2967 return; 2968 } 2969 } 2970 2971 if (touchXY != null) { 2972 // when dragging and dropping, just find the closest free spot 2973 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], 1, 1, null, 2974 cellLayout, mTargetCell); 2975 } else { 2976 cellLayout.findCellForSpan(mTargetCell, 1, 1); 2977 } 2978 addInScreen(view, container, screen, mTargetCell[0], mTargetCell[1], info.spanX, 2979 info.spanY, insertAtFirst); 2980 cellLayout.onDropChild(view); 2981 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2982 cellLayout.getChildrenLayout().measureChild(view); 2983 2984 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, 2985 lp.cellX, lp.cellY); 2986 2987 if (d.dragView != null) { 2988 // We wrap the animation call in the temporary set and reset of the current 2989 // cellLayout to its final transform -- this means we animate the drag view to 2990 // the correct final location. 2991 setFinalTransitionTransform(cellLayout); 2992 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 2993 exitSpringLoadedRunnable); 2994 resetTransitionTransform(cellLayout); 2995 } 2996 } 2997 } 2998 2999 public void setFinalTransitionTransform(CellLayout layout) { 3000 if (isSwitchingState()) { 3001 int index = indexOfChild(layout); 3002 mCurrentScaleX = layout.getScaleX(); 3003 mCurrentScaleY = layout.getScaleY(); 3004 mCurrentTranslationX = layout.getTranslationX(); 3005 mCurrentTranslationY = layout.getTranslationY(); 3006 mCurrentRotationY = layout.getRotationY(); 3007 layout.setScaleX(mNewScaleXs[index]); 3008 layout.setScaleY(mNewScaleYs[index]); 3009 layout.setTranslationX(mNewTranslationXs[index]); 3010 layout.setTranslationY(mNewTranslationYs[index]); 3011 layout.setRotationY(mNewRotationYs[index]); 3012 } 3013 } 3014 public void resetTransitionTransform(CellLayout layout) { 3015 if (isSwitchingState()) { 3016 mCurrentScaleX = layout.getScaleX(); 3017 mCurrentScaleY = layout.getScaleY(); 3018 mCurrentTranslationX = layout.getTranslationX(); 3019 mCurrentTranslationY = layout.getTranslationY(); 3020 mCurrentRotationY = layout.getRotationY(); 3021 layout.setScaleX(mCurrentScaleX); 3022 layout.setScaleY(mCurrentScaleY); 3023 layout.setTranslationX(mCurrentTranslationX); 3024 layout.setTranslationY(mCurrentTranslationY); 3025 layout.setRotationY(mCurrentRotationY); 3026 } 3027 } 3028 3029 /** 3030 * Return the current {@link CellLayout}, correctly picking the destination 3031 * screen while a scroll is in progress. 3032 */ 3033 public CellLayout getCurrentDropLayout() { 3034 return (CellLayout) getChildAt(mNextPage == INVALID_PAGE ? mCurrentPage : mNextPage); 3035 } 3036 3037 /** 3038 * Return the current CellInfo describing our current drag; this method exists 3039 * so that Launcher can sync this object with the correct info when the activity is created/ 3040 * destroyed 3041 * 3042 */ 3043 public CellLayout.CellInfo getDragInfo() { 3044 return mDragInfo; 3045 } 3046 3047 /** 3048 * Calculate the nearest cell where the given object would be dropped. 3049 * 3050 * pixelX and pixelY should be in the coordinate system of layout 3051 */ 3052 private int[] findNearestVacantArea(int pixelX, int pixelY, 3053 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 3054 return layout.findNearestVacantArea( 3055 pixelX, pixelY, spanX, spanY, ignoreView, recycle); 3056 } 3057 3058 /** 3059 * Calculate the nearest cell where the given object would be dropped. 3060 * 3061 * pixelX and pixelY should be in the coordinate system of layout 3062 */ 3063 private int[] findNearestArea(int pixelX, int pixelY, 3064 int spanX, int spanY, CellLayout layout, int[] recycle) { 3065 return layout.findNearestArea( 3066 pixelX, pixelY, spanX, spanY, recycle); 3067 } 3068 3069 void setup(DragController dragController) { 3070 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3071 mDragController = dragController; 3072 3073 // hardware layers on children are enabled on startup, but should be disabled until 3074 // needed 3075 updateChildrenLayersEnabled(); 3076 setWallpaperDimension(); 3077 } 3078 3079 /** 3080 * Called at the end of a drag which originated on the workspace. 3081 */ 3082 public void onDropCompleted(View target, DragObject d, boolean success) { 3083 if (success) { 3084 if (target != this) { 3085 if (mDragInfo != null) { 3086 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 3087 if (mDragInfo.cell instanceof DropTarget) { 3088 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 3089 } 3090 } 3091 } 3092 } else if (mDragInfo != null) { 3093 // NOTE: When 'success' is true, onDragExit is called by the DragController before 3094 // calling onDropCompleted(). We call it ourselves here, but maybe this should be 3095 // moved into DragController.cancelDrag(). 3096 doDragExit(null); 3097 CellLayout cellLayout; 3098 if (mLauncher.isHotseatLayout(target)) { 3099 cellLayout = mLauncher.getHotseat().getLayout(); 3100 } else { 3101 cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3102 } 3103 cellLayout.onDropChild(mDragInfo.cell); 3104 } 3105 if (d.cancelled && mDragInfo.cell != null) { 3106 mDragInfo.cell.setVisibility(VISIBLE); 3107 } 3108 mDragOutline = null; 3109 mDragInfo = null; 3110 } 3111 3112 public boolean isDropEnabled() { 3113 return true; 3114 } 3115 3116 @Override 3117 protected void onRestoreInstanceState(Parcelable state) { 3118 super.onRestoreInstanceState(state); 3119 Launcher.setScreen(mCurrentPage); 3120 } 3121 3122 @Override 3123 public void scrollLeft() { 3124 if (!isSmall() && !mIsSwitchingState) { 3125 super.scrollLeft(); 3126 } 3127 Folder openFolder = getOpenFolder(); 3128 if (openFolder != null) { 3129 openFolder.completeDragExit(); 3130 } 3131 } 3132 3133 @Override 3134 public void scrollRight() { 3135 if (!isSmall() && !mIsSwitchingState) { 3136 super.scrollRight(); 3137 } 3138 Folder openFolder = getOpenFolder(); 3139 if (openFolder != null) { 3140 openFolder.completeDragExit(); 3141 } 3142 } 3143 3144 @Override 3145 public boolean onEnterScrollArea(int x, int y, int direction) { 3146 // Ignore the scroll area if we are dragging over the hot seat 3147 if (mLauncher.getHotseat() != null) { 3148 Rect r = new Rect(); 3149 mLauncher.getHotseat().getHitRect(r); 3150 if (r.contains(x, y)) { 3151 return false; 3152 } 3153 } 3154 3155 boolean result = false; 3156 if (!isSmall() && !mIsSwitchingState) { 3157 mInScrollArea = true; 3158 3159 final int page = mCurrentPage + (direction == DragController.SCROLL_LEFT ? -1 : 1); 3160 final CellLayout layout = (CellLayout) getChildAt(page); 3161 cancelFolderCreation(); 3162 3163 if (layout != null) { 3164 // Exit the current layout and mark the overlapping layout 3165 if (mDragTargetLayout != null) { 3166 mDragTargetLayout.setIsDragOverlapping(false); 3167 mDragTargetLayout.onDragExit(); 3168 } 3169 mDragTargetLayout = layout; 3170 mDragTargetLayout.setIsDragOverlapping(true); 3171 3172 // Workspace is responsible for drawing the edge glow on adjacent pages, 3173 // so we need to redraw the workspace when this may have changed. 3174 invalidate(); 3175 result = true; 3176 } 3177 } 3178 return result; 3179 } 3180 3181 @Override 3182 public boolean onExitScrollArea() { 3183 boolean result = false; 3184 if (mInScrollArea) { 3185 if (mDragTargetLayout != null) { 3186 // Unmark the overlapping layout and re-enter the current layout 3187 mDragTargetLayout.setIsDragOverlapping(false); 3188 mDragTargetLayout = getCurrentDropLayout(); 3189 mDragTargetLayout.onDragEnter(); 3190 3191 // Workspace is responsible for drawing the edge glow on adjacent pages, 3192 // so we need to redraw the workspace when this may have changed. 3193 invalidate(); 3194 result = true; 3195 } 3196 mInScrollArea = false; 3197 } 3198 return result; 3199 } 3200 3201 private void onResetScrollArea() { 3202 if (mDragTargetLayout != null) { 3203 // Unmark the overlapping layout 3204 mDragTargetLayout.setIsDragOverlapping(false); 3205 3206 // Workspace is responsible for drawing the edge glow on adjacent pages, 3207 // so we need to redraw the workspace when this may have changed. 3208 invalidate(); 3209 } 3210 mInScrollArea = false; 3211 } 3212 3213 /** 3214 * Returns a specific CellLayout 3215 */ 3216 CellLayout getParentCellLayoutForView(View v) { 3217 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3218 for (CellLayout layout : layouts) { 3219 if (layout.getChildrenLayout().indexOfChild(v) > -1) { 3220 return layout; 3221 } 3222 } 3223 return null; 3224 } 3225 3226 /** 3227 * Returns a list of all the CellLayouts in the workspace. 3228 */ 3229 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3230 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3231 int screenCount = getChildCount(); 3232 for (int screen = 0; screen < screenCount; screen++) { 3233 layouts.add(((CellLayout) getChildAt(screen))); 3234 } 3235 if (mLauncher.getHotseat() != null) { 3236 layouts.add(mLauncher.getHotseat().getLayout()); 3237 } 3238 return layouts; 3239 } 3240 3241 /** 3242 * We should only use this to search for specific children. Do not use this method to modify 3243 * CellLayoutChildren directly. 3244 */ 3245 ArrayList<CellLayoutChildren> getWorkspaceAndHotseatCellLayoutChildren() { 3246 ArrayList<CellLayoutChildren> childrenLayouts = new ArrayList<CellLayoutChildren>(); 3247 int screenCount = getChildCount(); 3248 for (int screen = 0; screen < screenCount; screen++) { 3249 childrenLayouts.add(((CellLayout) getChildAt(screen)).getChildrenLayout()); 3250 } 3251 if (mLauncher.getHotseat() != null) { 3252 childrenLayouts.add(mLauncher.getHotseat().getLayout().getChildrenLayout()); 3253 } 3254 return childrenLayouts; 3255 } 3256 3257 public Folder getFolderForTag(Object tag) { 3258 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3259 for (CellLayoutChildren layout: childrenLayouts) { 3260 int count = layout.getChildCount(); 3261 for (int i = 0; i < count; i++) { 3262 View child = layout.getChildAt(i); 3263 if (child instanceof Folder) { 3264 Folder f = (Folder) child; 3265 if (f.getInfo() == tag && f.getInfo().opened) { 3266 return f; 3267 } 3268 } 3269 } 3270 } 3271 return null; 3272 } 3273 3274 public View getViewForTag(Object tag) { 3275 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3276 for (CellLayoutChildren layout: childrenLayouts) { 3277 int count = layout.getChildCount(); 3278 for (int i = 0; i < count; i++) { 3279 View child = layout.getChildAt(i); 3280 if (child.getTag() == tag) { 3281 return child; 3282 } 3283 } 3284 } 3285 return null; 3286 } 3287 3288 void clearDropTargets() { 3289 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3290 for (CellLayoutChildren layout: childrenLayouts) { 3291 int childCount = layout.getChildCount(); 3292 for (int j = 0; j < childCount; j++) { 3293 View v = layout.getChildAt(j); 3294 if (v instanceof DropTarget) { 3295 mDragController.removeDropTarget((DropTarget) v); 3296 } 3297 } 3298 } 3299 } 3300 3301 void removeItems(final ArrayList<ApplicationInfo> apps) { 3302 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3303 3304 final HashSet<String> packageNames = new HashSet<String>(); 3305 final int appCount = apps.size(); 3306 for (int i = 0; i < appCount; i++) { 3307 packageNames.add(apps.get(i).componentName.getPackageName()); 3308 } 3309 3310 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3311 for (final CellLayout layoutParent: cellLayouts) { 3312 final ViewGroup layout = layoutParent.getChildrenLayout(); 3313 3314 // Avoid ANRs by treating each screen separately 3315 post(new Runnable() { 3316 public void run() { 3317 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3318 childrenToRemove.clear(); 3319 3320 int childCount = layout.getChildCount(); 3321 for (int j = 0; j < childCount; j++) { 3322 final View view = layout.getChildAt(j); 3323 Object tag = view.getTag(); 3324 3325 if (tag instanceof ShortcutInfo) { 3326 final ShortcutInfo info = (ShortcutInfo) tag; 3327 final Intent intent = info.intent; 3328 final ComponentName name = intent.getComponent(); 3329 3330 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3331 for (String packageName: packageNames) { 3332 if (packageName.equals(name.getPackageName())) { 3333 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3334 childrenToRemove.add(view); 3335 } 3336 } 3337 } 3338 } else if (tag instanceof FolderInfo) { 3339 final FolderInfo info = (FolderInfo) tag; 3340 final ArrayList<ShortcutInfo> contents = info.contents; 3341 final int contentsCount = contents.size(); 3342 final ArrayList<ShortcutInfo> appsToRemoveFromFolder = 3343 new ArrayList<ShortcutInfo>(); 3344 3345 for (int k = 0; k < contentsCount; k++) { 3346 final ShortcutInfo appInfo = contents.get(k); 3347 final Intent intent = appInfo.intent; 3348 final ComponentName name = intent.getComponent(); 3349 3350 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3351 for (String packageName: packageNames) { 3352 if (packageName.equals(name.getPackageName())) { 3353 appsToRemoveFromFolder.add(appInfo); 3354 } 3355 } 3356 } 3357 } 3358 for (ShortcutInfo item: appsToRemoveFromFolder) { 3359 info.remove(item); 3360 LauncherModel.deleteItemFromDatabase(mLauncher, item); 3361 } 3362 } else if (tag instanceof LauncherAppWidgetInfo) { 3363 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3364 final AppWidgetProviderInfo provider = 3365 widgets.getAppWidgetInfo(info.appWidgetId); 3366 if (provider != null) { 3367 for (String packageName: packageNames) { 3368 if (packageName.equals(provider.provider.getPackageName())) { 3369 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3370 childrenToRemove.add(view); 3371 } 3372 } 3373 } 3374 } 3375 } 3376 3377 childCount = childrenToRemove.size(); 3378 for (int j = 0; j < childCount; j++) { 3379 View child = childrenToRemove.get(j); 3380 // Note: We can not remove the view directly from CellLayoutChildren as this 3381 // does not re-mark the spaces as unoccupied. 3382 layoutParent.removeViewInLayout(child); 3383 if (child instanceof DropTarget) { 3384 mDragController.removeDropTarget((DropTarget)child); 3385 } 3386 } 3387 3388 if (childCount > 0) { 3389 layout.requestLayout(); 3390 layout.invalidate(); 3391 } 3392 } 3393 }); 3394 } 3395 } 3396 3397 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3398 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3399 for (CellLayoutChildren layout: childrenLayouts) { 3400 int childCount = layout.getChildCount(); 3401 for (int j = 0; j < childCount; j++) { 3402 final View view = layout.getChildAt(j); 3403 Object tag = view.getTag(); 3404 if (tag instanceof ShortcutInfo) { 3405 ShortcutInfo info = (ShortcutInfo)tag; 3406 // We need to check for ACTION_MAIN otherwise getComponent() might 3407 // return null for some shortcuts (for instance, for shortcuts to 3408 // web pages.) 3409 final Intent intent = info.intent; 3410 final ComponentName name = intent.getComponent(); 3411 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3412 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3413 final int appCount = apps.size(); 3414 for (int k = 0; k < appCount; k++) { 3415 ApplicationInfo app = apps.get(k); 3416 if (app.componentName.equals(name)) { 3417 info.setIcon(mIconCache.getIcon(info.intent)); 3418 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 3419 new FastBitmapDrawable(info.getIcon(mIconCache)), 3420 null, null); 3421 } 3422 } 3423 } 3424 } 3425 } 3426 } 3427 } 3428 3429 void moveToDefaultScreen(boolean animate) { 3430 if (!isSmall()) { 3431 if (animate) { 3432 snapToPage(mDefaultPage); 3433 } else { 3434 setCurrentPage(mDefaultPage); 3435 } 3436 } 3437 getChildAt(mDefaultPage).requestFocus(); 3438 } 3439 3440 @Override 3441 public void syncPages() { 3442 } 3443 3444 @Override 3445 public void syncPageItems(int page, boolean immediate) { 3446 } 3447 3448 @Override 3449 protected String getCurrentPageDescription() { 3450 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 3451 return String.format(mContext.getString(R.string.workspace_scroll_format), 3452 page + 1, getChildCount()); 3453 } 3454 3455 public void getLocationInDragLayer(int[] loc) { 3456 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 3457 } 3458 3459 void showDockDivider(boolean immediately) { 3460 final ViewGroup parent = (ViewGroup) getParent(); 3461 final View qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3462 final View dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3463 if (qsbDivider != null && dockDivider != null) { 3464 qsbDivider.setVisibility(View.VISIBLE); 3465 dockDivider.setVisibility(View.VISIBLE); 3466 if (mDividerAnimator != null) { 3467 mDividerAnimator.cancel(); 3468 mDividerAnimator = null; 3469 } 3470 if (immediately) { 3471 qsbDivider.setAlpha(1f); 3472 dockDivider.setAlpha(1f); 3473 } else { 3474 mDividerAnimator = new AnimatorSet(); 3475 mDividerAnimator.playTogether(ObjectAnimator.ofFloat(qsbDivider, "alpha", 1f), 3476 ObjectAnimator.ofFloat(dockDivider, "alpha", 1f)); 3477 mDividerAnimator.setDuration(sScrollIndicatorFadeInDuration); 3478 mDividerAnimator.start(); 3479 } 3480 } 3481 } 3482 3483 void setFadeForOverScroll(float fade) { 3484 if (!isScrollingIndicatorEnabled()) return; 3485 3486 mOverscrollFade = fade; 3487 float reducedFade = 0.5f + 0.5f * (1 - fade); 3488 final ViewGroup parent = (ViewGroup) getParent(); 3489 final ImageView dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3490 final ImageView scrollIndicator = getScrollingIndicator(); 3491 3492 cancelScrollingIndicatorAnimations(); 3493 dockDivider.setAlpha(reducedFade); 3494 scrollIndicator.setAlpha(1 - fade); 3495 } 3496 3497 void hideDockDivider(boolean immediately) { 3498 final ViewGroup parent = (ViewGroup) getParent(); 3499 final View qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3500 final View dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3501 if (qsbDivider != null && dockDivider != null) { 3502 if (mDividerAnimator != null) { 3503 mDividerAnimator.cancel(); 3504 mDividerAnimator = null; 3505 } 3506 if (immediately) { 3507 qsbDivider.setVisibility(View.GONE); 3508 dockDivider.setVisibility(View.GONE); 3509 qsbDivider.setAlpha(0f); 3510 dockDivider.setAlpha(0f); 3511 } else { 3512 mDividerAnimator = new AnimatorSet(); 3513 mDividerAnimator.playTogether(ObjectAnimator.ofFloat(qsbDivider, "alpha", 0f), 3514 ObjectAnimator.ofFloat(dockDivider, "alpha", 0f)); 3515 mDividerAnimator.addListener(new AnimatorListenerAdapter() { 3516 private boolean cancelled = false; 3517 @Override 3518 public void onAnimationCancel(android.animation.Animator animation) { 3519 cancelled = true; 3520 } 3521 @Override 3522 public void onAnimationEnd(android.animation.Animator animation) { 3523 if (!cancelled) { 3524 qsbDivider.setVisibility(View.GONE); 3525 dockDivider.setVisibility(View.GONE); 3526 } 3527 } 3528 }); 3529 mDividerAnimator.setDuration(sScrollIndicatorFadeOutDuration); 3530 mDividerAnimator.start(); 3531 } 3532 } 3533 } 3534} 3535