Workspace.java revision 7407d2a16ed6cf22494122cf683bf13de6fa3695
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.AppWidgetHostView; 30import android.appwidget.AppWidgetManager; 31import android.appwidget.AppWidgetProviderInfo; 32import android.content.ClipData; 33import android.content.ClipDescription; 34import android.content.ComponentName; 35import android.content.Context; 36import android.content.Intent; 37import android.content.res.Resources; 38import android.content.res.TypedArray; 39import android.graphics.Bitmap; 40import android.graphics.Camera; 41import android.graphics.Canvas; 42import android.graphics.Matrix; 43import android.graphics.Paint; 44import android.graphics.Point; 45import android.graphics.PorterDuff; 46import android.graphics.Rect; 47import android.graphics.RectF; 48import android.graphics.Region.Op; 49import android.graphics.drawable.Drawable; 50import android.os.IBinder; 51import android.os.Parcelable; 52import android.util.AttributeSet; 53import android.util.DisplayMetrics; 54import android.util.Log; 55import android.util.Pair; 56import android.view.Display; 57import android.view.DragEvent; 58import android.view.MotionEvent; 59import android.view.View; 60import android.view.ViewGroup; 61import android.view.animation.DecelerateInterpolator; 62import android.widget.ImageView; 63import android.widget.TextView; 64import android.widget.Toast; 65 66import com.android.launcher.R; 67import com.android.launcher2.FolderIcon.FolderRingAnimator; 68import com.android.launcher2.InstallWidgetReceiver.WidgetMimeTypeHandlerData; 69 70import java.util.ArrayList; 71import java.util.HashSet; 72import java.util.List; 73 74/** 75 * The workspace is a wide area with a wallpaper and a finite number of pages. 76 * Each page contains a number of icons, folders or widgets the user can 77 * interact with. A workspace is meant to be used with a fixed width only. 78 */ 79public class Workspace extends SmoothPagedView 80 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 81 DragController.DragListener { 82 @SuppressWarnings({"UnusedDeclaration"}) 83 private static final String TAG = "Launcher.Workspace"; 84 85 // Y rotation to apply to the workspace screens 86 private static final float WORKSPACE_ROTATION = 12.5f; 87 private static final float WORKSPACE_OVERSCROLL_ROTATION = 24f; 88 private static float CAMERA_DISTANCE = 6500; 89 90 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 91 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 92 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 93 94 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 95 private static final int ADJACENT_SCREEN_DROP_DURATION = 300; 96 private static final int FLING_THRESHOLD_VELOCITY = 500; 97 98 // These animators are used to fade the children's outlines 99 private ObjectAnimator mChildrenOutlineFadeInAnimation; 100 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 101 private float mChildrenOutlineAlpha = 0; 102 103 // These properties refer to the background protection gradient used for AllApps and Customize 104 private ValueAnimator mBackgroundFadeInAnimation; 105 private ValueAnimator mBackgroundFadeOutAnimation; 106 private Drawable mBackground; 107 boolean mDrawBackground = true; 108 private float mBackgroundAlpha = 0; 109 private float mOverScrollMaxBackgroundAlpha = 0.0f; 110 private int mOverScrollPageIndex = -1; 111 112 private float mWallpaperScrollRatio = 1.0f; 113 114 private final WallpaperManager mWallpaperManager; 115 private IBinder mWindowToken; 116 private static final float WALLPAPER_SCREENS_SPAN = 2f; 117 118 private int mDefaultPage; 119 120 /** 121 * CellInfo for the cell that is currently being dragged 122 */ 123 private CellLayout.CellInfo mDragInfo; 124 125 /** 126 * Target drop area calculated during last acceptDrop call. 127 */ 128 private int[] mTargetCell = new int[2]; 129 130 /** 131 * The CellLayout that is currently being dragged over 132 */ 133 private CellLayout mDragTargetLayout = null; 134 private boolean mDragHasEnteredWorkspace = false; 135 136 private Launcher mLauncher; 137 private IconCache mIconCache; 138 private DragController mDragController; 139 140 // These are temporary variables to prevent having to allocate a new object just to 141 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 142 private int[] mTempCell = new int[2]; 143 private int[] mTempEstimate = new int[2]; 144 private float[] mDragViewVisualCenter = new float[2]; 145 private float[] mTempDragCoordinates = new float[2]; 146 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 147 private float[] mTempDragBottomRightCoordinates = new float[2]; 148 private Matrix mTempInverseMatrix = new Matrix(); 149 150 private SpringLoadedDragController mSpringLoadedDragController; 151 private float mSpringLoadedShrinkFactor; 152 153 private static final int DEFAULT_CELL_COUNT_X = 4; 154 private static final int DEFAULT_CELL_COUNT_Y = 4; 155 156 // State variable that indicates whether the pages are small (ie when you're 157 // in all apps or customize mode) 158 159 enum State { NORMAL, SPRING_LOADED, SMALL }; 160 private State mState = State.NORMAL; 161 private boolean mIsSwitchingState = false; 162 163 private AnimatorListener mChangeStateAnimationListener; 164 165 boolean mAnimatingViewIntoPlace = false; 166 boolean mIsDragOccuring = false; 167 boolean mChildrenLayersEnabled = true; 168 169 /** Is the user is dragging an item near the edge of a page? */ 170 private boolean mInScrollArea = false; 171 172 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 173 private Bitmap mDragOutline = null; 174 private final Rect mTempRect = new Rect(); 175 private final int[] mTempXY = new int[2]; 176 private int mDragViewMultiplyColor; 177 private float mOverscrollFade = 0; 178 179 // Paint used to draw external drop outline 180 private final Paint mExternalDragOutlinePaint = new Paint(); 181 182 // Camera and Matrix used to determine the final position of a neighboring CellLayout 183 private final Matrix mMatrix = new Matrix(); 184 private final Camera mCamera = new Camera(); 185 private final float mTempFloat2[] = new float[2]; 186 187 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 188 int mWallpaperWidth; 189 int mWallpaperHeight; 190 WallpaperOffsetInterpolator mWallpaperOffset; 191 boolean mUpdateWallpaperOffsetImmediately = false; 192 private Runnable mDelayedResizeRunnable; 193 private int mDisplayWidth; 194 private int mDisplayHeight; 195 private int mWallpaperTravelWidth; 196 197 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 198 private static final int FOLDER_CREATION_TIMEOUT = 250; 199 private final Alarm mFolderCreationAlarm = new Alarm(); 200 private FolderRingAnimator mDragFolderRingAnimator = null; 201 private View mLastDragOverView = null; 202 private boolean mCreateUserFolderOnDrop = false; 203 204 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 205 private float mXDown; 206 private float mYDown; 207 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 208 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 209 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 210 211 // These variables are used for storing the initial and final values during workspace animations 212 private int mSavedScrollX; 213 private float mSavedRotationY; 214 private float mSavedTranslationX; 215 private float mCurrentScaleX; 216 private float mCurrentScaleY; 217 private float mCurrentRotationY; 218 private float mCurrentTranslationX; 219 private float mCurrentTranslationY; 220 private float[] mOldTranslationXs; 221 private float[] mOldTranslationYs; 222 private float[] mOldScaleXs; 223 private float[] mOldScaleYs; 224 private float[] mOldBackgroundAlphas; 225 private float[] mOldBackgroundAlphaMultipliers; 226 private float[] mOldAlphas; 227 private float[] mOldRotationYs; 228 private float[] mNewTranslationXs; 229 private float[] mNewTranslationYs; 230 private float[] mNewScaleXs; 231 private float[] mNewScaleYs; 232 private float[] mNewBackgroundAlphas; 233 private float[] mNewBackgroundAlphaMultipliers; 234 private float[] mNewAlphas; 235 private float[] mNewRotationYs; 236 private float mTransitionProgress; 237 238 /** 239 * Used to inflate the Workspace from XML. 240 * 241 * @param context The application's context. 242 * @param attrs The attributes set containing the Workspace's customization values. 243 */ 244 public Workspace(Context context, AttributeSet attrs) { 245 this(context, attrs, 0); 246 } 247 248 /** 249 * Used to inflate the Workspace from XML. 250 * 251 * @param context The application's context. 252 * @param attrs The attributes set containing the Workspace's customization values. 253 * @param defStyle Unused. 254 */ 255 public Workspace(Context context, AttributeSet attrs, int defStyle) { 256 super(context, attrs, defStyle); 257 mContentIsRefreshable = false; 258 259 // With workspace, data is available straight from the get-go 260 setDataIsReady(); 261 262 mFadeInAdjacentScreens = 263 getResources().getBoolean(R.bool.config_workspaceFadeAdjacentScreens); 264 mWallpaperManager = WallpaperManager.getInstance(context); 265 266 int cellCountX = DEFAULT_CELL_COUNT_X; 267 int cellCountY = DEFAULT_CELL_COUNT_Y; 268 269 TypedArray a = context.obtainStyledAttributes(attrs, 270 R.styleable.Workspace, defStyle, 0); 271 272 final Resources res = context.getResources(); 273 if (LauncherApplication.isScreenLarge()) { 274 // Determine number of rows/columns dynamically 275 // TODO: This code currently fails on tablets with an aspect ratio < 1.3. 276 // Around that ratio we should make cells the same size in portrait and 277 // landscape 278 TypedArray actionBarSizeTypedArray = 279 context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize }); 280 final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); 281 final float systemBarHeight = res.getDimension(R.dimen.status_bar_height); 282 final float smallestScreenDim = res.getConfiguration().smallestScreenWidthDp; 283 284 cellCountX = 1; 285 while (CellLayout.widthInPortrait(res, cellCountX + 1) <= smallestScreenDim) { 286 cellCountX++; 287 } 288 289 cellCountY = 1; 290 while (actionBarHeight + CellLayout.heightInLandscape(res, cellCountY + 1) 291 <= smallestScreenDim - systemBarHeight) { 292 cellCountY++; 293 } 294 } 295 296 mSpringLoadedShrinkFactor = 297 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 298 mDragViewMultiplyColor = res.getColor(R.color.drag_view_multiply_color); 299 300 // if the value is manually specified, use that instead 301 cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX); 302 cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY); 303 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 304 a.recycle(); 305 306 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 307 setHapticFeedbackEnabled(false); 308 309 mLauncher = (Launcher) context; 310 initWorkspace(); 311 312 // Disable multitouch across the workspace/all apps/customize tray 313 setMotionEventSplittingEnabled(true); 314 } 315 316 // estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each 317 // dimension if unsuccessful 318 public int[] estimateItemSize(int hSpan, int vSpan, 319 PendingAddItemInfo pendingItemInfo, boolean springLoaded) { 320 int[] size = new int[2]; 321 if (getChildCount() > 0) { 322 CellLayout cl = (CellLayout) mLauncher.getWorkspace().getChildAt(0); 323 RectF r = estimateItemPosition(cl, pendingItemInfo, 0, 0, hSpan, vSpan); 324 size[0] = (int) r.width(); 325 size[1] = (int) r.height(); 326 if (springLoaded) { 327 size[0] *= mSpringLoadedShrinkFactor; 328 size[1] *= mSpringLoadedShrinkFactor; 329 } 330 return size; 331 } else { 332 size[0] = Integer.MAX_VALUE; 333 size[1] = Integer.MAX_VALUE; 334 return size; 335 } 336 } 337 public RectF estimateItemPosition(CellLayout cl, ItemInfo pendingInfo, 338 int hCell, int vCell, int hSpan, int vSpan) { 339 RectF r = new RectF(); 340 cl.cellToRect(hCell, vCell, hSpan, vSpan, r); 341 if (pendingInfo instanceof PendingAddWidgetInfo) { 342 PendingAddWidgetInfo widgetInfo = (PendingAddWidgetInfo) pendingInfo; 343 Rect p = AppWidgetHostView.getDefaultPaddingForWidget(mContext, 344 widgetInfo.componentName, null); 345 r.top += p.top; 346 r.left += p.left; 347 r.right -= p.right; 348 r.bottom -= p.bottom; 349 } 350 return r; 351 } 352 353 public void buildPageHardwareLayers() { 354 if (getWindowToken() != null) { 355 final int childCount = getChildCount(); 356 for (int i = 0; i < childCount; i++) { 357 CellLayout cl = (CellLayout) getChildAt(i); 358 cl.buildChildrenLayer(); 359 } 360 } 361 } 362 363 public void onDragStart(DragSource source, Object info, int dragAction) { 364 mIsDragOccuring = true; 365 updateChildrenLayersEnabled(); 366 mLauncher.lockScreenOrientationOnLargeUI(); 367 } 368 369 public void onDragEnd() { 370 mIsDragOccuring = false; 371 updateChildrenLayersEnabled(); 372 mLauncher.unlockScreenOrientationOnLargeUI(); 373 } 374 375 /** 376 * Initializes various states for this workspace. 377 */ 378 protected void initWorkspace() { 379 Context context = getContext(); 380 mCurrentPage = mDefaultPage; 381 Launcher.setScreen(mCurrentPage); 382 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 383 mIconCache = app.getIconCache(); 384 mExternalDragOutlinePaint.setAntiAlias(true); 385 setWillNotDraw(false); 386 setChildrenDrawnWithCacheEnabled(true); 387 388 try { 389 final Resources res = getResources(); 390 mBackground = res.getDrawable(R.drawable.apps_customize_bg); 391 } catch (Resources.NotFoundException e) { 392 // In this case, we will skip drawing background protection 393 } 394 395 mChangeStateAnimationListener = new AnimatorListenerAdapter() { 396 @Override 397 public void onAnimationStart(Animator animation) { 398 mIsSwitchingState = true; 399 } 400 401 @Override 402 public void onAnimationEnd(Animator animation) { 403 mIsSwitchingState = false; 404 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 405 updateChildrenLayersEnabled(); 406 } 407 }; 408 409 mWallpaperOffset = new WallpaperOffsetInterpolator(); 410 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 411 mDisplayWidth = display.getWidth(); 412 mDisplayHeight = display.getHeight(); 413 mWallpaperTravelWidth = (int) (mDisplayWidth * 414 wallpaperTravelToScreenWidthRatio(mDisplayWidth, mDisplayHeight)); 415 416 mFlingThresholdVelocity = (int) (FLING_THRESHOLD_VELOCITY * mDensity); 417 418 } 419 420 @Override 421 protected int getScrollMode() { 422 return SmoothPagedView.X_LARGE_MODE; 423 } 424 425 @Override 426 protected void onViewAdded(View child) { 427 super.onViewAdded(child); 428 if (!(child instanceof CellLayout)) { 429 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 430 } 431 CellLayout cl = ((CellLayout) child); 432 cl.setOnInterceptTouchListener(this); 433 cl.setClickable(true); 434 cl.enableHardwareLayers(); 435 } 436 437 /** 438 * @return The open folder on the current screen, or null if there is none 439 */ 440 Folder getOpenFolder() { 441 DragLayer dragLayer = mLauncher.getDragLayer(); 442 int count = dragLayer.getChildCount(); 443 for (int i = 0; i < count; i++) { 444 View child = dragLayer.getChildAt(i); 445 if (child instanceof Folder) { 446 Folder folder = (Folder) child; 447 if (folder.getInfo().opened) 448 return folder; 449 } 450 } 451 return null; 452 } 453 454 boolean isTouchActive() { 455 return mTouchState != TOUCH_STATE_REST; 456 } 457 458 /** 459 * Adds the specified child in the specified screen. The position and dimension of 460 * the child are defined by x, y, spanX and spanY. 461 * 462 * @param child The child to add in one of the workspace's screens. 463 * @param screen The screen in which to add the child. 464 * @param x The X position of the child in the screen's grid. 465 * @param y The Y position of the child in the screen's grid. 466 * @param spanX The number of cells spanned horizontally by the child. 467 * @param spanY The number of cells spanned vertically by the child. 468 */ 469 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY) { 470 addInScreen(child, container, screen, x, y, spanX, spanY, false); 471 } 472 473 /** 474 * Adds the specified child in the specified screen. The position and dimension of 475 * the child are defined by x, y, spanX and spanY. 476 * 477 * @param child The child to add in one of the workspace's screens. 478 * @param screen The screen in which to add the child. 479 * @param x The X position of the child in the screen's grid. 480 * @param y The Y position of the child in the screen's grid. 481 * @param spanX The number of cells spanned horizontally by the child. 482 * @param spanY The number of cells spanned vertically by the child. 483 * @param insert When true, the child is inserted at the beginning of the children list. 484 */ 485 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY, 486 boolean insert) { 487 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 488 if (screen < 0 || screen >= getChildCount()) { 489 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 490 + " (was " + screen + "); skipping child"); 491 return; 492 } 493 } 494 495 final CellLayout layout; 496 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 497 layout = mLauncher.getHotseat().getLayout(); 498 child.setOnKeyListener(null); 499 500 // Hide folder title in the hotseat 501 if (child instanceof FolderIcon) { 502 ((FolderIcon) child).setTextVisible(false); 503 } 504 505 if (screen < 0) { 506 screen = mLauncher.getHotseat().getOrderInHotseat(x, y); 507 } else { 508 // Note: We do this to ensure that the hotseat is always laid out in the orientation 509 // of the hotseat in order regardless of which orientation they were added 510 x = mLauncher.getHotseat().getCellXFromOrder(screen); 511 y = mLauncher.getHotseat().getCellYFromOrder(screen); 512 } 513 } else { 514 // Show folder title if not in the hotseat 515 if (child instanceof FolderIcon) { 516 ((FolderIcon) child).setTextVisible(true); 517 } 518 519 layout = (CellLayout) getChildAt(screen); 520 child.setOnKeyListener(new IconKeyEventListener()); 521 } 522 523 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 524 if (lp == null) { 525 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 526 } else { 527 lp.cellX = x; 528 lp.cellY = y; 529 lp.cellHSpan = spanX; 530 lp.cellVSpan = spanY; 531 } 532 533 if (spanX < 0 && spanY < 0) { 534 lp.isLockedToGrid = false; 535 } 536 537 // Get the canonical child id to uniquely represent this view in this screen 538 int childId = LauncherModel.getCellLayoutChildId(container, screen, x, y, spanX, spanY); 539 boolean markCellsAsOccupied = !(child instanceof Folder); 540 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 541 // TODO: This branch occurs when the workspace is adding views 542 // outside of the defined grid 543 // maybe we should be deleting these items from the LauncherModel? 544 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 545 } 546 547 if (!(child instanceof Folder)) { 548 child.setHapticFeedbackEnabled(false); 549 child.setOnLongClickListener(mLongClickListener); 550 } 551 if (child instanceof DropTarget) { 552 mDragController.addDropTarget((DropTarget) child); 553 } 554 } 555 556 /** 557 * Check if the point (x, y) hits a given page. 558 */ 559 private boolean hitsPage(int index, float x, float y) { 560 final View page = getChildAt(index); 561 if (page != null) { 562 float[] localXY = { x, y }; 563 mapPointFromSelfToChild(page, localXY); 564 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 565 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 566 } 567 return false; 568 } 569 570 @Override 571 protected boolean hitsPreviousPage(float x, float y) { 572 // mNextPage is set to INVALID_PAGE whenever we are stationary. 573 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 574 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 575 576 // Only allow tap to next page on large devices, where there's significant margin outside 577 // the active workspace 578 return LauncherApplication.isScreenLarge() && hitsPage(current - 1, x, y); 579 } 580 581 @Override 582 protected boolean hitsNextPage(float x, float y) { 583 // mNextPage is set to INVALID_PAGE whenever we are stationary. 584 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 585 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 586 587 // Only allow tap to next page on large devices, where there's significant margin outside 588 // the active workspace 589 return LauncherApplication.isScreenLarge() && hitsPage(current + 1, x, y); 590 } 591 592 /** 593 * Called directly from a CellLayout (not by the framework), after we've been added as a 594 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 595 * that it should intercept touch events, which is not something that is normally supported. 596 */ 597 @Override 598 public boolean onTouch(View v, MotionEvent event) { 599 return (isSmall() || mIsSwitchingState); 600 } 601 602 public boolean isSwitchingState() { 603 return mIsSwitchingState; 604 } 605 606 protected void onWindowVisibilityChanged (int visibility) { 607 mLauncher.onWindowVisibilityChanged(visibility); 608 } 609 610 @Override 611 public boolean dispatchUnhandledMove(View focused, int direction) { 612 if (isSmall() || mIsSwitchingState) { 613 // when the home screens are shrunken, shouldn't allow side-scrolling 614 return false; 615 } 616 return super.dispatchUnhandledMove(focused, direction); 617 } 618 619 @Override 620 public boolean onInterceptTouchEvent(MotionEvent ev) { 621 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 622 case MotionEvent.ACTION_DOWN: 623 mXDown = ev.getX(); 624 mYDown = ev.getY(); 625 break; 626 case MotionEvent.ACTION_POINTER_UP: 627 case MotionEvent.ACTION_UP: 628 if (mTouchState == TOUCH_STATE_REST) { 629 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 630 if (!currentPage.lastDownOnOccupiedCell()) { 631 onWallpaperTap(ev); 632 } 633 } 634 } 635 return super.onInterceptTouchEvent(ev); 636 } 637 638 @Override 639 protected void determineScrollingStart(MotionEvent ev) { 640 if (!isSmall() && !mIsSwitchingState) { 641 float deltaX = Math.abs(ev.getX() - mXDown); 642 float deltaY = Math.abs(ev.getY() - mYDown); 643 644 if (Float.compare(deltaX, 0f) == 0) return; 645 646 float slope = deltaY / deltaX; 647 float theta = (float) Math.atan(slope); 648 649 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 650 cancelCurrentPageLongPress(); 651 } 652 653 if (theta > MAX_SWIPE_ANGLE) { 654 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 655 return; 656 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 657 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 658 // increase the touch slop to make it harder to begin scrolling the workspace. This 659 // results in vertically scrolling widgets to more easily. The higher the angle, the 660 // more we increase touch slop. 661 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 662 float extraRatio = (float) 663 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 664 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 665 } else { 666 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 667 super.determineScrollingStart(ev); 668 } 669 } 670 } 671 672 @Override 673 protected boolean isScrollingIndicatorEnabled() { 674 return mState != State.SPRING_LOADED; 675 } 676 677 protected void onPageBeginMoving() { 678 super.onPageBeginMoving(); 679 680 if (isHardwareAccelerated()) { 681 updateChildrenLayersEnabled(); 682 } else { 683 if (mNextPage != INVALID_PAGE) { 684 // we're snapping to a particular screen 685 enableChildrenCache(mCurrentPage, mNextPage); 686 } else { 687 // this is when user is actively dragging a particular screen, they might 688 // swipe it either left or right (but we won't advance by more than one screen) 689 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 690 } 691 } 692 693 // Only show page outlines as we pan if we are on large screen 694 if (LauncherApplication.isScreenLarge()) { 695 showOutlines(); 696 } 697 } 698 699 protected void onPageEndMoving() { 700 super.onPageEndMoving(); 701 702 if (isHardwareAccelerated()) { 703 updateChildrenLayersEnabled(); 704 } else { 705 clearChildrenCache(); 706 } 707 708 // Hide the outlines, as long as we're not dragging 709 if (!mDragController.dragging()) { 710 // Only hide page outlines as we pan if we are on large screen 711 if (LauncherApplication.isScreenLarge()) { 712 hideOutlines(); 713 } 714 } 715 mOverScrollMaxBackgroundAlpha = 0.0f; 716 mOverScrollPageIndex = -1; 717 718 if (mDelayedResizeRunnable != null) { 719 mDelayedResizeRunnable.run(); 720 mDelayedResizeRunnable = null; 721 } 722 } 723 724 @Override 725 protected void notifyPageSwitchListener() { 726 super.notifyPageSwitchListener(); 727 Launcher.setScreen(mCurrentPage); 728 }; 729 730 // As a ratio of screen height, the total distance we want the parallax effect to span 731 // horizontally 732 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 733 float aspectRatio = width / (float) height; 734 735 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 736 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 737 // We will use these two data points to extrapolate how much the wallpaper parallax effect 738 // to span (ie travel) at any aspect ratio: 739 740 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 741 final float ASPECT_RATIO_PORTRAIT = 10/16f; 742 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 743 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 744 745 // To find out the desired width at different aspect ratios, we use the following two 746 // formulas, where the coefficient on x is the aspect ratio (width/height): 747 // (16/10)x + y = 1.5 748 // (10/16)x + y = 1.2 749 // We solve for x and y and end up with a final formula: 750 final float x = 751 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 752 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 753 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 754 return x * aspectRatio + y; 755 } 756 757 // The range of scroll values for Workspace 758 private int getScrollRange() { 759 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 760 } 761 762 protected void setWallpaperDimension() { 763 DisplayMetrics displayMetrics = new DisplayMetrics(); 764 mLauncher.getWindowManager().getDefaultDisplay().getRealMetrics(displayMetrics); 765 final int maxDim = Math.max(displayMetrics.widthPixels, displayMetrics.heightPixels); 766 final int minDim = Math.min(displayMetrics.widthPixels, displayMetrics.heightPixels); 767 768 // We need to ensure that there is enough extra space in the wallpaper for the intended 769 // parallax effects 770 if (LauncherApplication.isScreenLarge()) { 771 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 772 mWallpaperHeight = maxDim; 773 } else { 774 mWallpaperWidth = Math.max((int) (minDim * WALLPAPER_SCREENS_SPAN), maxDim); 775 mWallpaperHeight = maxDim; 776 } 777 new Thread("setWallpaperDimension") { 778 public void run() { 779 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 780 } 781 }.start(); 782 } 783 784 public void setVerticalWallpaperOffset(float offset) { 785 mWallpaperOffset.setFinalY(offset); 786 } 787 public float getVerticalWallpaperOffset() { 788 return mWallpaperOffset.getCurrY(); 789 } 790 public void setHorizontalWallpaperOffset(float offset) { 791 mWallpaperOffset.setFinalX(offset); 792 } 793 public float getHorizontalWallpaperOffset() { 794 return mWallpaperOffset.getCurrX(); 795 } 796 797 private float wallpaperOffsetForCurrentScroll() { 798 // The wallpaper travel width is how far, from left to right, the wallpaper will move 799 // at this orientation. On tablets in portrait mode we don't move all the way to the 800 // edges of the wallpaper, or otherwise the parallax effect would be too strong. 801 int wallpaperTravelWidth = mWallpaperWidth; 802 if (LauncherApplication.isScreenLarge()) { 803 wallpaperTravelWidth = mWallpaperTravelWidth; 804 } 805 806 // Set wallpaper offset steps (1 / (number of screens - 1)) 807 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f); 808 809 // For the purposes of computing the scrollRange and overScrollOffset, we assume 810 // that mLayoutScale is 1. This means that when we're in spring-loaded mode, 811 // there's no discrepancy between the wallpaper offset for a given page. 812 float layoutScale = mLayoutScale; 813 mLayoutScale = 1f; 814 int scrollRange = getScrollRange(); 815 816 // Again, we adjust the wallpaper offset to be consistent between values of mLayoutScale 817 float adjustedScrollX = Math.max(0, Math.min(mScrollX, mMaxScrollX)); 818 adjustedScrollX *= mWallpaperScrollRatio; 819 mLayoutScale = layoutScale; 820 821 float scrollProgress = 822 adjustedScrollX / (float) scrollRange; 823 float offsetInDips = wallpaperTravelWidth * scrollProgress + 824 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 825 float offset = offsetInDips / (float) mWallpaperWidth; 826 return offset; 827 } 828 private void syncWallpaperOffsetWithScroll() { 829 final boolean enableWallpaperEffects = isHardwareAccelerated(); 830 if (enableWallpaperEffects) { 831 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 832 } 833 } 834 835 public void updateWallpaperOffsetImmediately() { 836 mUpdateWallpaperOffsetImmediately = true; 837 } 838 839 private void updateWallpaperOffsets() { 840 boolean updateNow = false; 841 boolean keepUpdating = true; 842 if (mUpdateWallpaperOffsetImmediately) { 843 updateNow = true; 844 keepUpdating = false; 845 mWallpaperOffset.jumpToFinal(); 846 mUpdateWallpaperOffsetImmediately = false; 847 } else { 848 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 849 } 850 if (updateNow) { 851 if (mWindowToken != null) { 852 mWallpaperManager.setWallpaperOffsets(mWindowToken, 853 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 854 } 855 } 856 if (keepUpdating) { 857 fastInvalidate(); 858 } 859 } 860 861 @Override 862 protected void updateCurrentPageScroll() { 863 super.updateCurrentPageScroll(); 864 computeWallpaperScrollRatio(mCurrentPage); 865 } 866 867 @Override 868 protected void snapToPage(int whichPage) { 869 super.snapToPage(whichPage); 870 computeWallpaperScrollRatio(whichPage); 871 } 872 873 private void computeWallpaperScrollRatio(int page) { 874 // Here, we determine what the desired scroll would be with and without a layout scale, 875 // and compute a ratio between the two. This allows us to adjust the wallpaper offset 876 // as though there is no layout scale. 877 float layoutScale = mLayoutScale; 878 int scaled = getChildOffset(page) - getRelativeChildOffset(page); 879 mLayoutScale = 1.0f; 880 float unscaled = getChildOffset(page) - getRelativeChildOffset(page); 881 mLayoutScale = layoutScale; 882 if (scaled > 0) { 883 mWallpaperScrollRatio = (1.0f * unscaled) / scaled; 884 } else { 885 mWallpaperScrollRatio = 1f; 886 } 887 } 888 889 class WallpaperOffsetInterpolator { 890 float mFinalHorizontalWallpaperOffset = 0.0f; 891 float mFinalVerticalWallpaperOffset = 0.5f; 892 float mHorizontalWallpaperOffset = 0.0f; 893 float mVerticalWallpaperOffset = 0.5f; 894 long mLastWallpaperOffsetUpdateTime; 895 boolean mIsMovingFast; 896 boolean mOverrideHorizontalCatchupConstant; 897 float mHorizontalCatchupConstant = 0.35f; 898 float mVerticalCatchupConstant = 0.35f; 899 900 public WallpaperOffsetInterpolator() { 901 } 902 903 public void setOverrideHorizontalCatchupConstant(boolean override) { 904 mOverrideHorizontalCatchupConstant = override; 905 } 906 907 public void setHorizontalCatchupConstant(float f) { 908 mHorizontalCatchupConstant = f; 909 } 910 911 public void setVerticalCatchupConstant(float f) { 912 mVerticalCatchupConstant = f; 913 } 914 915 public boolean computeScrollOffset() { 916 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 917 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 918 mIsMovingFast = false; 919 return false; 920 } 921 boolean isLandscape = mDisplayWidth > mDisplayHeight; 922 923 long currentTime = System.currentTimeMillis(); 924 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 925 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 926 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 927 928 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 929 if (!mIsMovingFast && xdiff > 0.07) { 930 mIsMovingFast = true; 931 } 932 933 float fractionToCatchUpIn1MsHorizontal; 934 if (mOverrideHorizontalCatchupConstant) { 935 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 936 } else if (mIsMovingFast) { 937 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 938 } else { 939 // slow 940 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 941 } 942 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 943 944 fractionToCatchUpIn1MsHorizontal /= 33f; 945 fractionToCatchUpIn1MsVertical /= 33f; 946 947 final float UPDATE_THRESHOLD = 0.00001f; 948 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 949 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 950 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 951 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 952 953 // Don't have any lag between workspace and wallpaper on non-large devices 954 if (!LauncherApplication.isScreenLarge() || jumpToFinalValue) { 955 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 956 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 957 } else { 958 float percentToCatchUpVertical = 959 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 960 float percentToCatchUpHorizontal = 961 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 962 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 963 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 964 } 965 966 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 967 return true; 968 } 969 970 public float getCurrX() { 971 return mHorizontalWallpaperOffset; 972 } 973 974 public float getFinalX() { 975 return mFinalHorizontalWallpaperOffset; 976 } 977 978 public float getCurrY() { 979 return mVerticalWallpaperOffset; 980 } 981 982 public float getFinalY() { 983 return mFinalVerticalWallpaperOffset; 984 } 985 986 public void setFinalX(float x) { 987 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 988 } 989 990 public void setFinalY(float y) { 991 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 992 } 993 994 public void jumpToFinal() { 995 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 996 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 997 } 998 } 999 1000 @Override 1001 public void computeScroll() { 1002 super.computeScroll(); 1003 syncWallpaperOffsetWithScroll(); 1004 } 1005 1006 void showOutlines() { 1007 if (!isSmall() && !mIsSwitchingState) { 1008 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1009 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1010 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 1011 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 1012 mChildrenOutlineFadeInAnimation.start(); 1013 } 1014 } 1015 1016 void hideOutlines() { 1017 if (!isSmall() && !mIsSwitchingState) { 1018 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1019 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1020 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 1021 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 1022 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 1023 mChildrenOutlineFadeOutAnimation.start(); 1024 } 1025 } 1026 1027 public void showOutlinesTemporarily() { 1028 if (!mIsPageMoving && !isTouchActive()) { 1029 snapToPage(mCurrentPage); 1030 } 1031 } 1032 1033 public void setChildrenOutlineAlpha(float alpha) { 1034 mChildrenOutlineAlpha = alpha; 1035 for (int i = 0; i < getChildCount(); i++) { 1036 CellLayout cl = (CellLayout) getChildAt(i); 1037 cl.setBackgroundAlpha(alpha); 1038 } 1039 } 1040 1041 public float getChildrenOutlineAlpha() { 1042 return mChildrenOutlineAlpha; 1043 } 1044 1045 void disableBackground() { 1046 mDrawBackground = false; 1047 } 1048 void enableBackground() { 1049 mDrawBackground = true; 1050 } 1051 1052 private void animateBackgroundGradient(float finalAlpha, boolean animated) { 1053 if (mBackground == null) return; 1054 if (mBackgroundFadeInAnimation != null) { 1055 mBackgroundFadeInAnimation.cancel(); 1056 mBackgroundFadeInAnimation = null; 1057 } 1058 if (mBackgroundFadeOutAnimation != null) { 1059 mBackgroundFadeOutAnimation.cancel(); 1060 mBackgroundFadeOutAnimation = null; 1061 } 1062 float startAlpha = getBackgroundAlpha(); 1063 if (finalAlpha != startAlpha) { 1064 if (animated) { 1065 mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(startAlpha, finalAlpha); 1066 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1067 public void onAnimationUpdate(ValueAnimator animation) { 1068 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1069 } 1070 }); 1071 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1072 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1073 mBackgroundFadeOutAnimation.start(); 1074 } else { 1075 setBackgroundAlpha(finalAlpha); 1076 } 1077 } 1078 } 1079 1080 public void setBackgroundAlpha(float alpha) { 1081 if (alpha != mBackgroundAlpha) { 1082 mBackgroundAlpha = alpha; 1083 invalidate(); 1084 } 1085 } 1086 1087 public float getBackgroundAlpha() { 1088 return mBackgroundAlpha; 1089 } 1090 1091 /** 1092 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 1093 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 1094 * as being larger. This method computes what offset the rotated view should be translated 1095 * in order to minimize this perceived gap. 1096 * @param degrees Angle of the view 1097 * @param width Width of the view 1098 * @param height Height of the view 1099 * @return Offset to be used in a View.setTranslationX() call 1100 */ 1101 private float getOffsetXForRotation(float degrees, int width, int height) { 1102 mMatrix.reset(); 1103 mCamera.save(); 1104 mCamera.rotateY(Math.abs(degrees)); 1105 mCamera.getMatrix(mMatrix); 1106 mCamera.restore(); 1107 1108 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 1109 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 1110 mTempFloat2[0] = width; 1111 mTempFloat2[1] = height; 1112 mMatrix.mapPoints(mTempFloat2); 1113 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 1114 } 1115 1116 float backgroundAlphaInterpolator(float r) { 1117 float pivotA = 0.1f; 1118 float pivotB = 0.4f; 1119 if (r < pivotA) { 1120 return 0; 1121 } else if (r > pivotB) { 1122 return 1.0f; 1123 } else { 1124 return (r - pivotA)/(pivotB - pivotA); 1125 } 1126 } 1127 1128 float overScrollBackgroundAlphaInterpolator(float r) { 1129 float threshold = 0.08f; 1130 1131 if (r > mOverScrollMaxBackgroundAlpha) { 1132 mOverScrollMaxBackgroundAlpha = r; 1133 } else if (r < mOverScrollMaxBackgroundAlpha) { 1134 r = mOverScrollMaxBackgroundAlpha; 1135 } 1136 1137 return Math.min(r / threshold, 1.0f); 1138 } 1139 1140 private void screenScrolledLargeUI(int screenCenter) { 1141 if (isSwitchingState()) return; 1142 boolean isInOverscroll = false; 1143 for (int i = 0; i < getChildCount(); i++) { 1144 CellLayout cl = (CellLayout) getChildAt(i); 1145 if (cl != null) { 1146 float scrollProgress = getScrollProgress(screenCenter, cl, i); 1147 float rotation = WORKSPACE_ROTATION * scrollProgress; 1148 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1149 1150 // If the current page (i) is being over scrolled, we use a different 1151 // set of rules for setting the background alpha multiplier. 1152 if (!isSmall()) { 1153 if ((mOverScrollX < 0 && i == 0) || (mOverScrollX > mMaxScrollX && 1154 i == getChildCount() -1)) { 1155 isInOverscroll = true; 1156 rotation *= -1; 1157 cl.setBackgroundAlphaMultiplier( 1158 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 1159 mOverScrollPageIndex = i; 1160 cl.setOverScrollAmount(Math.abs(scrollProgress), i == 0); 1161 cl.setPivotX(cl.getMeasuredWidth() * (i == 0 ? 0.75f : 0.25f)); 1162 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1163 cl.setOverscrollTransformsDirty(true); 1164 } else if (mOverScrollPageIndex != i) { 1165 cl.setBackgroundAlphaMultiplier( 1166 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1167 } 1168 } 1169 cl.setFastTranslationX(translationX); 1170 cl.setFastRotationY(rotation); 1171 if (mFadeInAdjacentScreens && !isSmall()) { 1172 float alpha = 1 - Math.abs(scrollProgress); 1173 cl.setFastAlpha(alpha); 1174 } 1175 cl.fastInvalidate(); 1176 } 1177 } 1178 if (!isSwitchingState() && !isInOverscroll) { 1179 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1180 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1181 } 1182 invalidate(); 1183 } 1184 1185 private void screenScrolledStandardUI(int screenCenter) { 1186 if (mOverScrollX < 0 || mOverScrollX > mMaxScrollX) { 1187 int index = mOverScrollX < 0 ? 0 : getChildCount() - 1; 1188 CellLayout cl = (CellLayout) getChildAt(index); 1189 float scrollProgress = getScrollProgress(screenCenter, cl, index); 1190 cl.setOverScrollAmount(Math.abs(scrollProgress), index == 0); 1191 float rotation = - WORKSPACE_OVERSCROLL_ROTATION * scrollProgress; 1192 cl.setCameraDistance(mDensity * CAMERA_DISTANCE); 1193 cl.setPivotX(cl.getMeasuredWidth() * (index == 0 ? 0.75f : 0.25f)); 1194 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1195 cl.setRotationY(rotation); 1196 cl.setOverscrollTransformsDirty(true); 1197 setFadeForOverScroll(Math.abs(scrollProgress)); 1198 } else { 1199 if (mOverscrollFade != 0) { 1200 setFadeForOverScroll(0); 1201 } 1202 // We don't want to mess with the translations during transitions 1203 if (!isSwitchingState()) { 1204 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1205 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1206 } 1207 } 1208 } 1209 1210 @Override 1211 protected void screenScrolled(int screenCenter) { 1212 if (LauncherApplication.isScreenLarge()) { 1213 // We don't call super.screenScrolled() here because we handle the adjacent pages alpha 1214 // ourselves (for efficiency), and there are no scrolling indicators to update. 1215 screenScrolledLargeUI(screenCenter); 1216 } else { 1217 super.screenScrolled(screenCenter); 1218 screenScrolledStandardUI(screenCenter); 1219 } 1220 } 1221 1222 @Override 1223 protected void overScroll(float amount) { 1224 if (LauncherApplication.isScreenLarge()) { 1225 dampedOverScroll(amount); 1226 } else { 1227 acceleratedOverScroll(amount); 1228 } 1229 } 1230 1231 protected void onAttachedToWindow() { 1232 super.onAttachedToWindow(); 1233 mWindowToken = getWindowToken(); 1234 computeScroll(); 1235 mDragController.setWindowToken(mWindowToken); 1236 } 1237 1238 protected void onDetachedFromWindow() { 1239 mWindowToken = null; 1240 } 1241 1242 @Override 1243 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1244 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1245 mUpdateWallpaperOffsetImmediately = true; 1246 } 1247 super.onLayout(changed, left, top, right, bottom); 1248 } 1249 1250 @Override 1251 protected void onDraw(Canvas canvas) { 1252 updateWallpaperOffsets(); 1253 1254 // Draw the background gradient if necessary 1255 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1256 int alpha = (int) (mBackgroundAlpha * 255); 1257 mBackground.setAlpha(alpha); 1258 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1259 getMeasuredHeight()); 1260 mBackground.draw(canvas); 1261 } 1262 1263 super.onDraw(canvas); 1264 } 1265 1266 boolean isDrawingBackgroundGradient() { 1267 return (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground); 1268 } 1269 1270 @Override 1271 protected void dispatchDraw(Canvas canvas) { 1272 super.dispatchDraw(canvas); 1273 1274 if (mInScrollArea && !LauncherApplication.isScreenLarge()) { 1275 final int width = getWidth(); 1276 final int height = getHeight(); 1277 final int pageHeight = getChildAt(0).getHeight(); 1278 1279 // Set the height of the outline to be the height of the page 1280 final int offset = (height - pageHeight - mPaddingTop - mPaddingBottom) / 2; 1281 final int paddingTop = mPaddingTop + offset; 1282 final int paddingBottom = mPaddingBottom + offset; 1283 1284 final CellLayout leftPage = (CellLayout) getChildAt(mCurrentPage - 1); 1285 final CellLayout rightPage = (CellLayout) getChildAt(mCurrentPage + 1); 1286 1287 if (leftPage != null && leftPage.getIsDragOverlapping()) { 1288 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left_holo); 1289 d.setBounds(mScrollX, paddingTop, mScrollX + d.getIntrinsicWidth(), 1290 height - paddingBottom); 1291 d.draw(canvas); 1292 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 1293 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right_holo); 1294 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), paddingTop, mScrollX + width, 1295 height - paddingBottom); 1296 d.draw(canvas); 1297 } 1298 } 1299 } 1300 1301 @Override 1302 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1303 if (!mLauncher.isAllAppsVisible()) { 1304 final Folder openFolder = getOpenFolder(); 1305 if (openFolder != null) { 1306 return openFolder.requestFocus(direction, previouslyFocusedRect); 1307 } else { 1308 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1309 } 1310 } 1311 return false; 1312 } 1313 1314 @Override 1315 public int getDescendantFocusability() { 1316 if (isSmall()) { 1317 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1318 } 1319 return super.getDescendantFocusability(); 1320 } 1321 1322 @Override 1323 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1324 if (!mLauncher.isAllAppsVisible()) { 1325 final Folder openFolder = getOpenFolder(); 1326 if (openFolder != null) { 1327 openFolder.addFocusables(views, direction); 1328 } else { 1329 super.addFocusables(views, direction, focusableMode); 1330 } 1331 } 1332 } 1333 1334 public boolean isSmall() { 1335 return mState == State.SMALL || mState == State.SPRING_LOADED; 1336 } 1337 1338 void enableChildrenCache(int fromPage, int toPage) { 1339 if (fromPage > toPage) { 1340 final int temp = fromPage; 1341 fromPage = toPage; 1342 toPage = temp; 1343 } 1344 1345 final int screenCount = getChildCount(); 1346 1347 fromPage = Math.max(fromPage, 0); 1348 toPage = Math.min(toPage, screenCount - 1); 1349 1350 for (int i = fromPage; i <= toPage; i++) { 1351 final CellLayout layout = (CellLayout) getChildAt(i); 1352 layout.setChildrenDrawnWithCacheEnabled(true); 1353 layout.setChildrenDrawingCacheEnabled(true); 1354 } 1355 } 1356 1357 void clearChildrenCache() { 1358 final int screenCount = getChildCount(); 1359 for (int i = 0; i < screenCount; i++) { 1360 final CellLayout layout = (CellLayout) getChildAt(i); 1361 layout.setChildrenDrawnWithCacheEnabled(false); 1362 // In software mode, we don't want the items to continue to be drawn into bitmaps 1363 if (!isHardwareAccelerated()) { 1364 layout.setChildrenDrawingCacheEnabled(false); 1365 } 1366 } 1367 } 1368 1369 private void updateChildrenLayersEnabled() { 1370 boolean small = isSmall() || mIsSwitchingState; 1371 boolean dragging = mAnimatingViewIntoPlace || mIsDragOccuring; 1372 boolean enableChildrenLayers = small || dragging || isPageMoving(); 1373 1374 if (enableChildrenLayers != mChildrenLayersEnabled) { 1375 mChildrenLayersEnabled = enableChildrenLayers; 1376 for (int i = 0; i < getPageCount(); i++) { 1377 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(mChildrenLayersEnabled); 1378 } 1379 } 1380 } 1381 1382 protected void onWallpaperTap(MotionEvent ev) { 1383 final int[] position = mTempCell; 1384 getLocationOnScreen(position); 1385 1386 int pointerIndex = ev.getActionIndex(); 1387 position[0] += (int) ev.getX(pointerIndex); 1388 position[1] += (int) ev.getY(pointerIndex); 1389 1390 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1391 ev.getAction() == MotionEvent.ACTION_UP 1392 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1393 position[0], position[1], 0, null); 1394 } 1395 1396 /* 1397 * This interpolator emulates the rate at which the perceived scale of an object changes 1398 * as its distance from a camera increases. When this interpolator is applied to a scale 1399 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1400 * from the camera. 1401 */ 1402 static class ZInterpolator implements TimeInterpolator { 1403 private float focalLength; 1404 1405 public ZInterpolator(float foc) { 1406 focalLength = foc; 1407 } 1408 1409 public float getInterpolation(float input) { 1410 return (1.0f - focalLength / (focalLength + input)) / 1411 (1.0f - focalLength / (focalLength + 1.0f)); 1412 } 1413 } 1414 1415 /* 1416 * The exact reverse of ZInterpolator. 1417 */ 1418 static class InverseZInterpolator implements TimeInterpolator { 1419 private ZInterpolator zInterpolator; 1420 public InverseZInterpolator(float foc) { 1421 zInterpolator = new ZInterpolator(foc); 1422 } 1423 public float getInterpolation(float input) { 1424 return 1 - zInterpolator.getInterpolation(1 - input); 1425 } 1426 } 1427 1428 /* 1429 * ZInterpolator compounded with an ease-out. 1430 */ 1431 static class ZoomOutInterpolator implements TimeInterpolator { 1432 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(0.75f); 1433 private final ZInterpolator zInterpolator = new ZInterpolator(0.13f); 1434 1435 public float getInterpolation(float input) { 1436 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1437 } 1438 } 1439 1440 /* 1441 * InvereZInterpolator compounded with an ease-out. 1442 */ 1443 static class ZoomInInterpolator implements TimeInterpolator { 1444 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1445 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1446 1447 public float getInterpolation(float input) { 1448 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1449 } 1450 } 1451 1452 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1453 1454 /* 1455 * 1456 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1457 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1458 * 1459 * These methods mark the appropriate pages as accepting drops (which alters their visual 1460 * appearance). 1461 * 1462 */ 1463 public void onDragStartedWithItem(View v) { 1464 final Canvas canvas = new Canvas(); 1465 1466 // We need to add extra padding to the bitmap to make room for the glow effect 1467 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1468 1469 // The outline is used to visualize where the item will land if dropped 1470 mDragOutline = createDragOutline(v, canvas, bitmapPadding); 1471 } 1472 1473 public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, Paint alphaClipPaint) { 1474 final Canvas canvas = new Canvas(); 1475 1476 // We need to add extra padding to the bitmap to make room for the glow effect 1477 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1478 1479 int[] size = estimateItemSize(info.spanX, info.spanY, info, false); 1480 1481 // The outline is used to visualize where the item will land if dropped 1482 mDragOutline = createDragOutline(b, canvas, bitmapPadding, size[0], size[1], alphaClipPaint); 1483 } 1484 1485 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1486 // never dragged over 1487 public void onDragStopped(boolean success) { 1488 // In the success case, DragController has already called onDragExit() 1489 if (!success) { 1490 doDragExit(null); 1491 } 1492 } 1493 1494 public void exitWidgetResizeMode() { 1495 DragLayer dragLayer = mLauncher.getDragLayer(); 1496 dragLayer.clearAllResizeFrames(); 1497 } 1498 1499 private void initAnimationArrays() { 1500 final int childCount = getChildCount(); 1501 if (mOldTranslationXs != null) return; 1502 mOldTranslationXs = new float[childCount]; 1503 mOldTranslationYs = new float[childCount]; 1504 mOldScaleXs = new float[childCount]; 1505 mOldScaleYs = new float[childCount]; 1506 mOldBackgroundAlphas = new float[childCount]; 1507 mOldBackgroundAlphaMultipliers = new float[childCount]; 1508 mOldAlphas = new float[childCount]; 1509 mOldRotationYs = new float[childCount]; 1510 mNewTranslationXs = new float[childCount]; 1511 mNewTranslationYs = new float[childCount]; 1512 mNewScaleXs = new float[childCount]; 1513 mNewScaleYs = new float[childCount]; 1514 mNewBackgroundAlphas = new float[childCount]; 1515 mNewBackgroundAlphaMultipliers = new float[childCount]; 1516 mNewAlphas = new float[childCount]; 1517 mNewRotationYs = new float[childCount]; 1518 } 1519 1520 Animator getChangeStateAnimation(final State state, boolean animated) { 1521 return getChangeStateAnimation(state, animated, 0); 1522 } 1523 1524 Animator getChangeStateAnimation(final State state, boolean animated, int delay) { 1525 if (mState == state) { 1526 return null; 1527 } 1528 1529 // Initialize animation arrays for the first time if necessary 1530 initAnimationArrays(); 1531 1532 AnimatorSet anim = animated ? new AnimatorSet() : null; 1533 1534 // Stop any scrolling, move to the current page right away 1535 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1536 1537 final State oldState = mState; 1538 final boolean oldStateIsNormal = (oldState == State.NORMAL); 1539 final boolean oldStateIsSmall = (oldState == State.SMALL); 1540 mState = state; 1541 final boolean stateIsNormal = (state == State.NORMAL); 1542 final boolean stateIsSpringLoaded = (state == State.SPRING_LOADED); 1543 final boolean stateIsSmall = (state == State.SMALL); 1544 float finalScaleFactor = 1.0f; 1545 float finalBackgroundAlpha = stateIsSpringLoaded ? 1.0f : 0f; 1546 float translationX = 0; 1547 float translationY = 0; 1548 boolean zoomIn = true; 1549 1550 if (state != State.NORMAL) { 1551 finalScaleFactor = mSpringLoadedShrinkFactor - (stateIsSmall ? 0.1f : 0); 1552 if (oldStateIsNormal && stateIsSmall) { 1553 zoomIn = false; 1554 setLayoutScale(finalScaleFactor); 1555 updateChildrenLayersEnabled(); 1556 } else { 1557 finalBackgroundAlpha = 1.0f; 1558 setLayoutScale(finalScaleFactor); 1559 } 1560 } else { 1561 setLayoutScale(1.0f); 1562 } 1563 1564 final int duration = zoomIn ? 1565 getResources().getInteger(R.integer.config_workspaceUnshrinkTime) : 1566 getResources().getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1567 for (int i = 0; i < getChildCount(); i++) { 1568 final CellLayout cl = (CellLayout) getChildAt(i); 1569 float rotation = 0f; 1570 float initialAlpha = cl.getAlpha(); 1571 float finalAlphaMultiplierValue = 1f; 1572 float finalAlpha = (!mFadeInAdjacentScreens || stateIsSpringLoaded || 1573 (i == mCurrentPage)) ? 1f : 0f; 1574 1575 // Determine the pages alpha during the state transition 1576 if ((oldStateIsSmall && stateIsNormal) || 1577 (oldStateIsNormal && stateIsSmall)) { 1578 // To/from workspace - only show the current page unless the transition is not 1579 // animated and the animation end callback below doesn't run 1580 if (i == mCurrentPage || !animated) { 1581 finalAlpha = 1f; 1582 finalAlphaMultiplierValue = 0f; 1583 } else { 1584 initialAlpha = 0f; 1585 finalAlpha = 0f; 1586 } 1587 } 1588 1589 // Update the rotation of the screen (don't apply rotation on Phone UI) 1590 if (LauncherApplication.isScreenLarge()) { 1591 if (i < mCurrentPage) { 1592 rotation = WORKSPACE_ROTATION; 1593 } else if (i > mCurrentPage) { 1594 rotation = -WORKSPACE_ROTATION; 1595 } 1596 } 1597 1598 // If the screen is not xlarge, then don't rotate the CellLayouts 1599 // NOTE: If we don't update the side pages alpha, then we should not hide the side 1600 // pages. see unshrink(). 1601 if (LauncherApplication.isScreenLarge()) { 1602 translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1603 } 1604 1605 mOldAlphas[i] = initialAlpha; 1606 mNewAlphas[i] = finalAlpha; 1607 if (animated) { 1608 mOldTranslationXs[i] = cl.getTranslationX(); 1609 mOldTranslationYs[i] = cl.getTranslationY(); 1610 mOldScaleXs[i] = cl.getScaleX(); 1611 mOldScaleYs[i] = cl.getScaleY(); 1612 mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1613 mOldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1614 mOldRotationYs[i] = cl.getRotationY(); 1615 1616 mNewTranslationXs[i] = translationX; 1617 mNewTranslationYs[i] = translationY; 1618 mNewScaleXs[i] = finalScaleFactor; 1619 mNewScaleYs[i] = finalScaleFactor; 1620 mNewBackgroundAlphas[i] = finalBackgroundAlpha; 1621 mNewBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1622 mNewRotationYs[i] = rotation; 1623 } else { 1624 cl.setTranslationX(translationX); 1625 cl.setTranslationY(translationY); 1626 cl.setScaleX(finalScaleFactor); 1627 cl.setScaleY(finalScaleFactor); 1628 cl.setBackgroundAlpha(finalBackgroundAlpha); 1629 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1630 cl.setAlpha(finalAlpha); 1631 cl.setRotationY(rotation); 1632 mChangeStateAnimationListener.onAnimationEnd(null); 1633 } 1634 } 1635 1636 if (animated) { 1637 anim.addListener(new AnimatorListenerAdapter() { 1638 @Override 1639 public void onAnimationEnd(android.animation.Animator animation) { 1640 // The above code to determine initialAlpha and finalAlpha will ensure that only 1641 // the current page is visible during (and subsequently, after) the transition 1642 // animation. If fade adjacent pages is disabled, then re-enable the page 1643 // visibility after the transition animation. 1644 if (!mFadeInAdjacentScreens && stateIsNormal && oldStateIsSmall) { 1645 for (int i = 0; i < getChildCount(); i++) { 1646 final CellLayout cl = (CellLayout) getChildAt(i); 1647 cl.setAlpha(1f); 1648 } 1649 } 1650 } 1651 }); 1652 for (int index = 0; index < getChildCount(); index++) { 1653 final int i = index; 1654 final CellLayout cl = (CellLayout) getChildAt(i); 1655 invalidate(); 1656 if (mOldAlphas[i] == 0 && mNewAlphas[i] == 0) { 1657 cl.fastInvalidate(); 1658 cl.setFastTranslationX(mNewTranslationXs[i]); 1659 cl.setFastTranslationY(mNewTranslationYs[i]); 1660 cl.setFastScaleX(mNewScaleXs[i]); 1661 cl.setFastScaleY(mNewScaleYs[i]); 1662 cl.setFastBackgroundAlpha(mNewBackgroundAlphas[i]); 1663 cl.setBackgroundAlphaMultiplier(mNewBackgroundAlphaMultipliers[i]); 1664 cl.setFastAlpha(mNewAlphas[i]); 1665 } else { 1666 LauncherViewPropertyAnimator a = new LauncherViewPropertyAnimator(cl); 1667 a.translationX(mNewTranslationXs[i]) 1668 .translationY(mNewTranslationYs[i]) 1669 .scaleX(mNewScaleXs[i]) 1670 .scaleY(mNewScaleYs[i]) 1671 .setDuration(duration) 1672 .setInterpolator(mZoomInInterpolator); 1673 if (mOldAlphas[i] != mNewAlphas[i]) { 1674 a.alpha(mNewAlphas[i]); 1675 } 1676 anim.play(a); 1677 if (mOldRotationYs[i] != 0 || mNewRotationYs[i] != 0) { 1678 ValueAnimator rotate = ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1679 rotate.setInterpolator(new DecelerateInterpolator(2.0f)); 1680 rotate.addUpdateListener(new LauncherAnimatorUpdateListener() { 1681 public void onAnimationUpdate(float a, float b) { 1682 cl.setRotationY(a * 0f + b * 1f); 1683 } 1684 }); 1685 anim.play(rotate); 1686 } 1687 if (mOldBackgroundAlphas[i] != 0 || 1688 mNewBackgroundAlphas[i] != 0 || 1689 mOldBackgroundAlphaMultipliers[i] != 0 || 1690 mNewBackgroundAlphaMultipliers[i] != 0) { 1691 ValueAnimator bgAnim = ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1692 bgAnim.setInterpolator(mZoomInInterpolator); 1693 bgAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1694 public void onAnimationUpdate(float a, float b) { 1695 cl.setFastBackgroundAlpha( 1696 a * mOldBackgroundAlphas[i] + 1697 b * mNewBackgroundAlphas[i]); 1698 cl.setBackgroundAlphaMultiplier( 1699 a * mOldBackgroundAlphaMultipliers[i] + 1700 b * mNewBackgroundAlphaMultipliers[i]); 1701 } 1702 }); 1703 anim.play(bgAnim); 1704 } 1705 } 1706 } 1707 anim.setStartDelay(delay); 1708 // If we call this when we're not animated, onAnimationEnd is never called on 1709 // the listener; make sure we only use the listener when we're actually animating 1710 anim.addListener(mChangeStateAnimationListener); 1711 } 1712 1713 if (stateIsSpringLoaded) { 1714 // Right now we're covered by Apps Customize 1715 // Show the background gradient immediately, so the gradient will 1716 // be showing once AppsCustomize disappears 1717 animateBackgroundGradient(getResources().getInteger( 1718 R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, false); 1719 } else { 1720 // Fade the background gradient away 1721 animateBackgroundGradient(0f, true); 1722 } 1723 return anim; 1724 } 1725 1726 /** 1727 * Draw the View v into the given Canvas. 1728 * 1729 * @param v the view to draw 1730 * @param destCanvas the canvas to draw on 1731 * @param padding the horizontal and vertical padding to use when drawing 1732 */ 1733 private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { 1734 final Rect clipRect = mTempRect; 1735 v.getDrawingRect(clipRect); 1736 1737 boolean textVisible = false; 1738 1739 destCanvas.save(); 1740 if (v instanceof TextView && pruneToDrawable) { 1741 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1742 clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); 1743 destCanvas.translate(padding / 2, padding / 2); 1744 d.draw(destCanvas); 1745 } else { 1746 if (v instanceof FolderIcon) { 1747 // For FolderIcons the text can bleed into the icon area, and so we need to 1748 // hide the text completely (which can't be achieved by clipping). 1749 if (((FolderIcon) v).getTextVisible()) { 1750 ((FolderIcon) v).setTextVisible(false); 1751 textVisible = true; 1752 } 1753 } else if (v instanceof BubbleTextView) { 1754 final BubbleTextView tv = (BubbleTextView) v; 1755 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1756 tv.getLayout().getLineTop(0); 1757 } else if (v instanceof TextView) { 1758 final TextView tv = (TextView) v; 1759 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1760 tv.getLayout().getLineTop(0); 1761 } 1762 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1763 destCanvas.clipRect(clipRect, Op.REPLACE); 1764 v.draw(destCanvas); 1765 1766 // Restore text visibility of FolderIcon if necessary 1767 if (textVisible) { 1768 ((FolderIcon) v).setTextVisible(true); 1769 } 1770 } 1771 destCanvas.restore(); 1772 } 1773 1774 /** 1775 * Returns a new bitmap to show when the given View is being dragged around. 1776 * Responsibility for the bitmap is transferred to the caller. 1777 */ 1778 public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1779 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1780 Bitmap b; 1781 1782 if (v instanceof TextView) { 1783 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1784 b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, 1785 d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); 1786 } else { 1787 b = Bitmap.createBitmap( 1788 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1789 } 1790 1791 canvas.setBitmap(b); 1792 drawDragView(v, canvas, padding, true); 1793 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 1794 canvas.drawColor(mDragViewMultiplyColor, PorterDuff.Mode.MULTIPLY); 1795 canvas.setBitmap(null); 1796 1797 return b; 1798 } 1799 1800 /** 1801 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1802 * Responsibility for the bitmap is transferred to the caller. 1803 */ 1804 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1805 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1806 final Bitmap b = Bitmap.createBitmap( 1807 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1808 1809 canvas.setBitmap(b); 1810 drawDragView(v, canvas, padding, true); 1811 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1812 canvas.setBitmap(null); 1813 return b; 1814 } 1815 1816 /** 1817 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1818 * Responsibility for the bitmap is transferred to the caller. 1819 */ 1820 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h, 1821 Paint alphaClipPaint) { 1822 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1823 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1824 canvas.setBitmap(b); 1825 1826 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 1827 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 1828 (h - padding) / (float) orig.getHeight()); 1829 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 1830 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 1831 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 1832 1833 // center the image 1834 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 1835 1836 canvas.drawBitmap(orig, src, dst, null); 1837 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor, 1838 alphaClipPaint); 1839 canvas.setBitmap(null); 1840 1841 return b; 1842 } 1843 1844 /** 1845 * Creates a drag outline to represent a drop (that we don't have the actual information for 1846 * yet). May be changed in the future to alter the drop outline slightly depending on the 1847 * clip description mime data. 1848 */ 1849 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 1850 Resources r = getResources(); 1851 final int outlineColor = r.getColor(android.R.color.holo_blue_light); 1852 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 1853 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 1854 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 1855 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 1856 final Bitmap b = Bitmap.createBitmap( 1857 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 1858 1859 canvas.setBitmap(b); 1860 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 1861 rectRadius, rectRadius, mExternalDragOutlinePaint); 1862 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1863 canvas.setBitmap(null); 1864 return b; 1865 } 1866 1867 void startDrag(CellLayout.CellInfo cellInfo) { 1868 View child = cellInfo.cell; 1869 1870 // Make sure the drag was started by a long press as opposed to a long click. 1871 if (!child.isInTouchMode()) { 1872 return; 1873 } 1874 1875 mDragInfo = cellInfo; 1876 child.setVisibility(GONE); 1877 1878 child.clearFocus(); 1879 child.setPressed(false); 1880 1881 final Canvas canvas = new Canvas(); 1882 1883 // We need to add extra padding to the bitmap to make room for the glow effect 1884 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1885 1886 // The outline is used to visualize where the item will land if dropped 1887 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 1888 beginDragShared(child, this); 1889 } 1890 1891 public void beginDragShared(View child, DragSource source) { 1892 Resources r = getResources(); 1893 1894 // We need to add extra padding to the bitmap to make room for the glow effect 1895 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1896 1897 // The drag bitmap follows the touch point around on the screen 1898 final Bitmap b = createDragBitmap(child, new Canvas(), bitmapPadding); 1899 1900 final int bmpWidth = b.getWidth(); 1901 1902 mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 1903 final int dragLayerX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 1904 int dragLayerY = mTempXY[1] - bitmapPadding / 2; 1905 1906 Point dragVisualizeOffset = null; 1907 Rect dragRect = null; 1908 if (child instanceof BubbleTextView || child instanceof PagedViewIcon) { 1909 int iconSize = r.getDimensionPixelSize(R.dimen.app_icon_size); 1910 int iconPaddingTop = r.getDimensionPixelSize(R.dimen.app_icon_padding_top); 1911 int top = child.getPaddingTop(); 1912 int left = (bmpWidth - iconSize) / 2; 1913 int right = left + iconSize; 1914 int bottom = top + iconSize; 1915 dragLayerY += top; 1916 // Note: The drag region is used to calculate drag layer offsets, but the 1917 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 1918 dragVisualizeOffset = new Point(-bitmapPadding / 2, iconPaddingTop - bitmapPadding / 2); 1919 dragRect = new Rect(left, top, right, bottom); 1920 } else if (child instanceof FolderIcon) { 1921 int previewSize = r.getDimensionPixelSize(R.dimen.folder_preview_size); 1922 dragRect = new Rect(0, 0, child.getWidth(), previewSize); 1923 } 1924 1925 // Clear the pressed state if necessary 1926 if (child instanceof BubbleTextView) { 1927 BubbleTextView icon = (BubbleTextView) child; 1928 icon.clearPressedOrFocusedBackground(); 1929 } 1930 1931 mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 1932 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect); 1933 b.recycle(); 1934 } 1935 1936 void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, int screen, 1937 int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { 1938 View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); 1939 1940 final int[] cellXY = new int[2]; 1941 target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1942 addInScreen(view, container, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1943 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, cellXY[0], 1944 cellXY[1]); 1945 } 1946 1947 public boolean transitionStateShouldAllowDrop() { 1948 return (!isSwitchingState() || mTransitionProgress > 0.5f); 1949 } 1950 1951 /** 1952 * {@inheritDoc} 1953 */ 1954 public boolean acceptDrop(DragObject d) { 1955 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1956 if (d.dragSource != this) { 1957 // Don't accept the drop if we're not over a screen at time of drop 1958 if (mDragTargetLayout == null) { 1959 return false; 1960 } 1961 if (!transitionStateShouldAllowDrop()) return false; 1962 1963 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 1964 d.dragView, mDragViewVisualCenter); 1965 1966 // We want the point to be mapped to the dragTarget. 1967 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 1968 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 1969 } else { 1970 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 1971 } 1972 1973 int spanX = 1; 1974 int spanY = 1; 1975 View ignoreView = null; 1976 if (mDragInfo != null) { 1977 final CellLayout.CellInfo dragCellInfo = mDragInfo; 1978 spanX = dragCellInfo.spanX; 1979 spanY = dragCellInfo.spanY; 1980 ignoreView = dragCellInfo.cell; 1981 } else { 1982 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 1983 spanX = dragInfo.spanX; 1984 spanY = dragInfo.spanY; 1985 } 1986 1987 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 1988 (int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell); 1989 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, true)) { 1990 return true; 1991 } 1992 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, 1993 mTargetCell)) { 1994 return true; 1995 } 1996 1997 // Don't accept the drop if there's no room for the item 1998 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 1999 // Don't show the message if we are dropping on the AllApps button and the hotseat 2000 // is full 2001 if (mTargetCell != null && mLauncher.isHotseatLayout(mDragTargetLayout)) { 2002 Hotseat hotseat = mLauncher.getHotseat(); 2003 if (Hotseat.isAllAppsButtonRank( 2004 hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { 2005 return false; 2006 } 2007 } 2008 2009 mLauncher.showOutOfSpaceMessage(); 2010 return false; 2011 } 2012 } 2013 return true; 2014 } 2015 2016 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, 2017 boolean considerTimeout) { 2018 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2019 2020 boolean hasntMoved = false; 2021 if (mDragInfo != null) { 2022 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2023 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2024 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2025 } 2026 2027 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2028 return false; 2029 } 2030 2031 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2032 boolean willBecomeShortcut = 2033 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2034 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2035 2036 return (aboveShortcut && willBecomeShortcut); 2037 } 2038 2039 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell) { 2040 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2041 if (dropOverView instanceof FolderIcon) { 2042 FolderIcon fi = (FolderIcon) dropOverView; 2043 if (fi.acceptDrop(dragInfo)) { 2044 return true; 2045 } 2046 } 2047 return false; 2048 } 2049 2050 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2051 int[] targetCell, boolean external, DragView dragView, Runnable postAnimationRunnable) { 2052 View v = target.getChildAt(targetCell[0], targetCell[1]); 2053 boolean hasntMoved = false; 2054 if (mDragInfo != null) { 2055 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2056 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2057 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2058 } 2059 2060 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2061 mCreateUserFolderOnDrop = false; 2062 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 2063 2064 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2065 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2066 2067 if (aboveShortcut && willBecomeShortcut) { 2068 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2069 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2070 // if the drag started here, we need to remove it from the workspace 2071 if (!external) { 2072 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2073 } 2074 2075 Rect folderLocation = new Rect(); 2076 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2077 target.removeView(v); 2078 2079 FolderIcon fi = 2080 mLauncher.addFolder(target, container, screen, targetCell[0], targetCell[1]); 2081 destInfo.cellX = -1; 2082 destInfo.cellY = -1; 2083 sourceInfo.cellX = -1; 2084 sourceInfo.cellY = -1; 2085 2086 // If the dragView is null, we can't animate 2087 boolean animate = dragView != null; 2088 if (animate) { 2089 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2090 postAnimationRunnable); 2091 } else { 2092 fi.addItem(destInfo); 2093 fi.addItem(sourceInfo); 2094 } 2095 return true; 2096 } 2097 return false; 2098 } 2099 2100 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2101 DragObject d, boolean external) { 2102 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2103 if (dropOverView instanceof FolderIcon) { 2104 FolderIcon fi = (FolderIcon) dropOverView; 2105 if (fi.acceptDrop(d.dragInfo)) { 2106 fi.onDrop(d); 2107 2108 // if the drag started here, we need to remove it from the workspace 2109 if (!external) { 2110 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2111 } 2112 return true; 2113 } 2114 } 2115 return false; 2116 } 2117 2118 public void onDrop(DragObject d) { 2119 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2120 mDragViewVisualCenter); 2121 2122 // We want the point to be mapped to the dragTarget. 2123 if (mDragTargetLayout != null) { 2124 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2125 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2126 } else { 2127 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2128 } 2129 } 2130 2131 CellLayout dropTargetLayout = mDragTargetLayout; 2132 2133 int snapScreen = -1; 2134 if (d.dragSource != this) { 2135 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2136 (int) mDragViewVisualCenter[1] }; 2137 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2138 } else if (mDragInfo != null) { 2139 final View cell = mDragInfo.cell; 2140 2141 if (dropTargetLayout != null) { 2142 // Move internally 2143 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2144 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2145 long container = hasMovedIntoHotseat ? 2146 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2147 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2148 int screen = (mTargetCell[0] < 0) ? 2149 mDragInfo.screen : indexOfChild(dropTargetLayout); 2150 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2151 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2152 // First we find the cell nearest to point at which the item is 2153 // dropped, without any consideration to whether there is an item there. 2154 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2155 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2156 // If the item being dropped is a shortcut and the nearest drop 2157 // cell also contains a shortcut, then create a folder with the two shortcuts. 2158 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2159 dropTargetLayout, mTargetCell, false, d.dragView, null)) { 2160 return; 2161 } 2162 2163 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, d, false)) { 2164 return; 2165 } 2166 2167 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2168 // we need to find the nearest cell location that is vacant 2169 mTargetCell = findNearestVacantArea((int) mDragViewVisualCenter[0], 2170 (int) mDragViewVisualCenter[1], mDragInfo.spanX, mDragInfo.spanY, cell, 2171 dropTargetLayout, mTargetCell); 2172 2173 if (mCurrentPage != screen && !hasMovedIntoHotseat) { 2174 snapScreen = screen; 2175 snapToPage(screen); 2176 } 2177 2178 if (mTargetCell[0] >= 0 && mTargetCell[1] >= 0) { 2179 if (hasMovedLayouts) { 2180 // Reparent the view 2181 getParentCellLayoutForView(cell).removeView(cell); 2182 addInScreen(cell, container, screen, mTargetCell[0], mTargetCell[1], 2183 mDragInfo.spanX, mDragInfo.spanY); 2184 } 2185 2186 // update the item's position after drop 2187 final ItemInfo info = (ItemInfo) cell.getTag(); 2188 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2189 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 2190 lp.cellX = mTargetCell[0]; 2191 lp.cellY = mTargetCell[1]; 2192 cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screen, 2193 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2194 2195 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2196 cell instanceof LauncherAppWidgetHostView) { 2197 final CellLayout cellLayout = dropTargetLayout; 2198 // We post this call so that the widget has a chance to be placed 2199 // in its final location 2200 2201 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2202 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2203 if (pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2204 final Runnable resizeRunnable = new Runnable() { 2205 public void run() { 2206 DragLayer dragLayer = mLauncher.getDragLayer(); 2207 dragLayer.addResizeFrame(info, hostView, cellLayout); 2208 } 2209 }; 2210 post(new Runnable() { 2211 public void run() { 2212 if (!isPageMoving()) { 2213 resizeRunnable.run(); 2214 } else { 2215 mDelayedResizeRunnable = resizeRunnable; 2216 } 2217 } 2218 }); 2219 } 2220 } 2221 2222 LauncherModel.moveItemInDatabase(mLauncher, info, container, screen, lp.cellX, 2223 lp.cellY); 2224 } 2225 } 2226 2227 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2228 2229 // Prepare it to be animated into its new position 2230 // This must be called after the view has been re-parented 2231 final Runnable disableHardwareLayersRunnable = new Runnable() { 2232 @Override 2233 public void run() { 2234 mAnimatingViewIntoPlace = false; 2235 updateChildrenLayersEnabled(); 2236 } 2237 }; 2238 mAnimatingViewIntoPlace = true; 2239 if (d.dragView.hasDrawn()) { 2240 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2241 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2242 disableHardwareLayersRunnable, this); 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 mDragHasEnteredWorkspace = true; 2287 if (mDragTargetLayout != null) { 2288 mDragTargetLayout.setIsDragOverlapping(false); 2289 mDragTargetLayout.onDragExit(); 2290 } 2291 mDragTargetLayout = getCurrentDropLayout(); 2292 mDragTargetLayout.setIsDragOverlapping(true); 2293 mDragTargetLayout.onDragEnter(); 2294 2295 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2296 // don't need to show the outlines 2297 if (LauncherApplication.isScreenLarge()) { 2298 showOutlines(); 2299 } 2300 } 2301 2302 private void doDragExit(DragObject d) { 2303 // Clean up folders 2304 cleanupFolderCreation(d); 2305 2306 // Reset the scroll area and previous drag target 2307 onResetScrollArea(); 2308 2309 if (mDragTargetLayout != null) { 2310 mDragTargetLayout.setIsDragOverlapping(false); 2311 mDragTargetLayout.onDragExit(); 2312 } 2313 mLastDragOverView = null; 2314 mSpringLoadedDragController.cancel(); 2315 2316 if (!mIsPageMoving) { 2317 hideOutlines(); 2318 } 2319 } 2320 2321 public void onDragExit(DragObject d) { 2322 mDragHasEnteredWorkspace = false; 2323 doDragExit(d); 2324 } 2325 2326 public DropTarget getDropTargetDelegate(DragObject d) { 2327 return null; 2328 } 2329 2330 /** 2331 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 2332 * in the returned structure related to the widgets that match the drop (or a null list if it is 2333 * a shortcut drop). If the drop is not accepted then a null structure is returned. 2334 */ 2335 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 2336 final LauncherModel model = mLauncher.getModel(); 2337 final ClipDescription desc = event.getClipDescription(); 2338 final int mimeTypeCount = desc.getMimeTypeCount(); 2339 for (int i = 0; i < mimeTypeCount; ++i) { 2340 final String mimeType = desc.getMimeType(i); 2341 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 2342 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 2343 } else { 2344 final List<WidgetMimeTypeHandlerData> widgets = 2345 model.resolveWidgetsForMimeType(mContext, mimeType); 2346 if (widgets.size() > 0) { 2347 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 2348 } 2349 } 2350 } 2351 return null; 2352 } 2353 2354 /** 2355 * Global drag and drop handler 2356 */ 2357 @Override 2358 public boolean onDragEvent(DragEvent event) { 2359 final ClipDescription desc = event.getClipDescription(); 2360 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 2361 final int[] pos = new int[2]; 2362 layout.getLocationOnScreen(pos); 2363 // We need to offset the drag coordinates to layout coordinate space 2364 final int x = (int) event.getX() - pos[0]; 2365 final int y = (int) event.getY() - pos[1]; 2366 2367 switch (event.getAction()) { 2368 case DragEvent.ACTION_DRAG_STARTED: { 2369 // Validate this drag 2370 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2371 if (test != null) { 2372 boolean isShortcut = (test.second == null); 2373 if (isShortcut) { 2374 // Check if we have enough space on this screen to add a new shortcut 2375 if (!layout.findCellForSpan(pos, 1, 1)) { 2376 mLauncher.showOutOfSpaceMessage(); 2377 return false; 2378 } 2379 } 2380 } else { 2381 // Show error message if we couldn't accept any of the items 2382 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 2383 Toast.LENGTH_SHORT).show(); 2384 return false; 2385 } 2386 2387 // Create the drag outline 2388 // We need to add extra padding to the bitmap to make room for the glow effect 2389 final Canvas canvas = new Canvas(); 2390 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2391 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 2392 2393 // Show the current page outlines to indicate that we can accept this drop 2394 showOutlines(); 2395 layout.onDragEnter(); 2396 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1, null, null); 2397 2398 return true; 2399 } 2400 case DragEvent.ACTION_DRAG_LOCATION: 2401 // Visualize the drop location 2402 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1, null, null); 2403 return true; 2404 case DragEvent.ACTION_DROP: { 2405 // Try and add any shortcuts 2406 final LauncherModel model = mLauncher.getModel(); 2407 final ClipData data = event.getClipData(); 2408 2409 // We assume that the mime types are ordered in descending importance of 2410 // representation. So we enumerate the list of mime types and alert the 2411 // user if any widgets can handle the drop. Only the most preferred 2412 // representation will be handled. 2413 pos[0] = x; 2414 pos[1] = y; 2415 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2416 if (test != null) { 2417 final int index = test.first; 2418 final List<WidgetMimeTypeHandlerData> widgets = test.second; 2419 final boolean isShortcut = (widgets == null); 2420 final String mimeType = desc.getMimeType(index); 2421 if (isShortcut) { 2422 final Intent intent = data.getItemAt(index).getIntent(); 2423 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 2424 if (info != null) { 2425 onDropExternal(new int[] { x, y }, info, layout, false); 2426 } 2427 } else { 2428 if (widgets.size() == 1) { 2429 // If there is only one item, then go ahead and add and configure 2430 // that widget 2431 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 2432 final PendingAddWidgetInfo createInfo = 2433 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 2434 mLauncher.addAppWidgetFromDrop(createInfo, 2435 LauncherSettings.Favorites.CONTAINER_DESKTOP, mCurrentPage, null, pos); 2436 } else { 2437 // Show the widget picker dialog if there is more than one widget 2438 // that can handle this data type 2439 final InstallWidgetReceiver.WidgetListAdapter adapter = 2440 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 2441 data, widgets, layout, mCurrentPage, pos); 2442 final AlertDialog.Builder builder = 2443 new AlertDialog.Builder(mContext); 2444 builder.setAdapter(adapter, adapter); 2445 builder.setCancelable(true); 2446 builder.setTitle(mContext.getString( 2447 R.string.external_drop_widget_pick_title)); 2448 builder.setIcon(R.drawable.ic_no_applications); 2449 builder.show(); 2450 } 2451 } 2452 } 2453 return true; 2454 } 2455 case DragEvent.ACTION_DRAG_ENDED: 2456 // Hide the page outlines after the drop 2457 layout.onDragExit(); 2458 hideOutlines(); 2459 return true; 2460 } 2461 return super.onDragEvent(event); 2462 } 2463 2464 /* 2465 * 2466 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2467 * coordinate space. The argument xy is modified with the return result. 2468 * 2469 */ 2470 void mapPointFromSelfToChild(View v, float[] xy) { 2471 mapPointFromSelfToChild(v, xy, null); 2472 } 2473 2474 /* 2475 * 2476 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2477 * coordinate space. The argument xy is modified with the return result. 2478 * 2479 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2480 * computing it itself; we use this to avoid redundant matrix inversions in 2481 * findMatchingPageForDragOver 2482 * 2483 */ 2484 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2485 if (cachedInverseMatrix == null) { 2486 v.getMatrix().invert(mTempInverseMatrix); 2487 cachedInverseMatrix = mTempInverseMatrix; 2488 } 2489 xy[0] = xy[0] + mScrollX - v.getLeft(); 2490 xy[1] = xy[1] + mScrollY - v.getTop(); 2491 cachedInverseMatrix.mapPoints(xy); 2492 } 2493 2494 /* 2495 * Maps a point from the Workspace's coordinate system to another sibling view's. (Workspace 2496 * covers the full screen) 2497 */ 2498 void mapPointFromSelfToSibling(View v, float[] xy) { 2499 xy[0] = xy[0] - v.getLeft(); 2500 xy[1] = xy[1] - v.getTop(); 2501 } 2502 2503 /* 2504 * 2505 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2506 * the parent View's coordinate space. The argument xy is modified with the return result. 2507 * 2508 */ 2509 void mapPointFromChildToSelf(View v, float[] xy) { 2510 v.getMatrix().mapPoints(xy); 2511 xy[0] -= (mScrollX - v.getLeft()); 2512 xy[1] -= (mScrollY - v.getTop()); 2513 } 2514 2515 static private float squaredDistance(float[] point1, float[] point2) { 2516 float distanceX = point1[0] - point2[0]; 2517 float distanceY = point2[1] - point2[1]; 2518 return distanceX * distanceX + distanceY * distanceY; 2519 } 2520 2521 /* 2522 * 2523 * Returns true if the passed CellLayout cl overlaps with dragView 2524 * 2525 */ 2526 boolean overlaps(CellLayout cl, DragView dragView, 2527 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2528 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2529 final float[] draggedItemTopLeft = mTempDragCoordinates; 2530 draggedItemTopLeft[0] = dragViewX; 2531 draggedItemTopLeft[1] = dragViewY; 2532 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2533 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2534 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2535 2536 // Transform the dragged item's top left coordinates 2537 // to the CellLayout's local coordinates 2538 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2539 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2540 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2541 2542 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2543 // Transform the dragged item's bottom right coordinates 2544 // to the CellLayout's local coordinates 2545 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2546 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2547 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2548 2549 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2550 float overlap = (overlapRegionRight - overlapRegionLeft) * 2551 (overlapRegionBottom - overlapRegionTop); 2552 if (overlap > 0) { 2553 return true; 2554 } 2555 } 2556 } 2557 return false; 2558 } 2559 2560 /* 2561 * 2562 * This method returns the CellLayout that is currently being dragged to. In order to drag 2563 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2564 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2565 * 2566 * Return null if no CellLayout is currently being dragged over 2567 * 2568 */ 2569 private CellLayout findMatchingPageForDragOver( 2570 DragView dragView, float originX, float originY, boolean exact) { 2571 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2572 // with the item being dragged and then choose the one that's closest to the touch point 2573 final int screenCount = getChildCount(); 2574 CellLayout bestMatchingScreen = null; 2575 float smallestDistSoFar = Float.MAX_VALUE; 2576 2577 for (int i = 0; i < screenCount; i++) { 2578 CellLayout cl = (CellLayout) getChildAt(i); 2579 2580 final float[] touchXy = {originX, originY}; 2581 // Transform the touch coordinates to the CellLayout's local coordinates 2582 // If the touch point is within the bounds of the cell layout, we can return immediately 2583 cl.getMatrix().invert(mTempInverseMatrix); 2584 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2585 2586 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2587 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2588 return cl; 2589 } 2590 2591 if (!exact) { 2592 // Get the center of the cell layout in screen coordinates 2593 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2594 cellLayoutCenter[0] = cl.getWidth()/2; 2595 cellLayoutCenter[1] = cl.getHeight()/2; 2596 mapPointFromChildToSelf(cl, cellLayoutCenter); 2597 2598 touchXy[0] = originX; 2599 touchXy[1] = originY; 2600 2601 // Calculate the distance between the center of the CellLayout 2602 // and the touch point 2603 float dist = squaredDistance(touchXy, cellLayoutCenter); 2604 2605 if (dist < smallestDistSoFar) { 2606 smallestDistSoFar = dist; 2607 bestMatchingScreen = cl; 2608 } 2609 } 2610 } 2611 return bestMatchingScreen; 2612 } 2613 2614 // This is used to compute the visual center of the dragView. This point is then 2615 // used to visualize drop locations and determine where to drop an item. The idea is that 2616 // the visual center represents the user's interpretation of where the item is, and hence 2617 // is the appropriate point to use when determining drop location. 2618 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2619 DragView dragView, float[] recycle) { 2620 float res[]; 2621 if (recycle == null) { 2622 res = new float[2]; 2623 } else { 2624 res = recycle; 2625 } 2626 2627 // First off, the drag view has been shifted in a way that is not represented in the 2628 // x and y values or the x/yOffsets. Here we account for that shift. 2629 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2630 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2631 2632 // These represent the visual top and left of drag view if a dragRect was provided. 2633 // If a dragRect was not provided, then they correspond to the actual view left and 2634 // top, as the dragRect is in that case taken to be the entire dragView. 2635 // R.dimen.dragViewOffsetY. 2636 int left = x - xOffset; 2637 int top = y - yOffset; 2638 2639 // In order to find the visual center, we shift by half the dragRect 2640 res[0] = left + dragView.getDragRegion().width() / 2; 2641 res[1] = top + dragView.getDragRegion().height() / 2; 2642 2643 return res; 2644 } 2645 2646 private boolean isDragWidget(DragObject d) { 2647 return (d.dragInfo instanceof LauncherAppWidgetInfo || 2648 d.dragInfo instanceof PendingAddWidgetInfo); 2649 } 2650 private boolean isExternalDragWidget(DragObject d) { 2651 return d.dragSource != this && isDragWidget(d); 2652 } 2653 2654 public void onDragOver(DragObject d) { 2655 // Skip drag over events while we are dragging over side pages 2656 if (mInScrollArea) return; 2657 if (mIsSwitchingState) return; 2658 2659 Rect r = new Rect(); 2660 CellLayout layout = null; 2661 ItemInfo item = (ItemInfo) d.dragInfo; 2662 2663 // Ensure that we have proper spans for the item that we are dropping 2664 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2665 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2666 d.dragView, mDragViewVisualCenter); 2667 2668 // Identify whether we have dragged over a side page 2669 if (isSmall()) { 2670 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 2671 mLauncher.getHotseat().getHitRect(r); 2672 if (r.contains(d.x, d.y)) { 2673 layout = mLauncher.getHotseat().getLayout(); 2674 } 2675 } 2676 if (layout == null) { 2677 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false); 2678 } 2679 if (layout != mDragTargetLayout) { 2680 // Cancel all intermediate folder states 2681 cleanupFolderCreation(d); 2682 2683 if (mDragTargetLayout != null) { 2684 mDragTargetLayout.setIsDragOverlapping(false); 2685 mDragTargetLayout.onDragExit(); 2686 } 2687 mDragTargetLayout = layout; 2688 if (mDragTargetLayout != null) { 2689 mDragTargetLayout.setIsDragOverlapping(true); 2690 mDragTargetLayout.onDragEnter(); 2691 } else { 2692 mLastDragOverView = null; 2693 } 2694 2695 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 2696 if (isInSpringLoadedMode) { 2697 if (mLauncher.isHotseatLayout(layout)) { 2698 mSpringLoadedDragController.cancel(); 2699 } else { 2700 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2701 } 2702 } 2703 } 2704 } else { 2705 // Test to see if we are over the hotseat otherwise just use the current page 2706 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 2707 mLauncher.getHotseat().getHitRect(r); 2708 if (r.contains(d.x, d.y)) { 2709 layout = mLauncher.getHotseat().getLayout(); 2710 } 2711 } 2712 if (layout == null) { 2713 layout = getCurrentDropLayout(); 2714 } 2715 if (layout != mDragTargetLayout) { 2716 if (mDragTargetLayout != null) { 2717 mDragTargetLayout.setIsDragOverlapping(false); 2718 mDragTargetLayout.onDragExit(); 2719 } 2720 mDragTargetLayout = layout; 2721 mDragTargetLayout.setIsDragOverlapping(true); 2722 mDragTargetLayout.onDragEnter(); 2723 } 2724 } 2725 2726 // Handle the drag over 2727 if (mDragTargetLayout != null) { 2728 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2729 2730 // We want the point to be mapped to the dragTarget. 2731 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2732 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2733 } else { 2734 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2735 } 2736 ItemInfo info = (ItemInfo) d.dragInfo; 2737 2738 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2739 (int) mDragViewVisualCenter[1], 1, 1, mDragTargetLayout, mTargetCell); 2740 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2741 mTargetCell[1]); 2742 2743 boolean userFolderPending = willCreateUserFolder(info, mDragTargetLayout, 2744 mTargetCell, false); 2745 boolean isOverFolder = dragOverView instanceof FolderIcon; 2746 if (dragOverView != mLastDragOverView) { 2747 cancelFolderCreation(); 2748 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2749 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2750 } 2751 } 2752 2753 if (userFolderPending && dragOverView != mLastDragOverView) { 2754 mFolderCreationAlarm.setOnAlarmListener(new 2755 FolderCreationAlarmListener(mDragTargetLayout, mTargetCell[0], mTargetCell[1])); 2756 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2757 } 2758 2759 if (dragOverView != mLastDragOverView && isOverFolder) { 2760 ((FolderIcon) dragOverView).onDragEnter(d.dragInfo); 2761 if (mDragTargetLayout != null) { 2762 mDragTargetLayout.clearDragOutlines(); 2763 } 2764 } 2765 mLastDragOverView = dragOverView; 2766 2767 if (!mCreateUserFolderOnDrop && !isOverFolder) { 2768 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2769 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2770 item.spanX, item.spanY, d.dragView.getDragVisualizeOffset(), 2771 d.dragView.getDragRegion()); 2772 } 2773 } 2774 } 2775 2776 private void cleanupFolderCreation(DragObject d) { 2777 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2778 mDragFolderRingAnimator.animateToNaturalState(); 2779 } 2780 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2781 if (d != null) { 2782 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2783 } 2784 } 2785 mFolderCreationAlarm.cancelAlarm(); 2786 } 2787 2788 private void cancelFolderCreation() { 2789 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2790 mDragFolderRingAnimator.animateToNaturalState(); 2791 } 2792 mCreateUserFolderOnDrop = false; 2793 mFolderCreationAlarm.cancelAlarm(); 2794 } 2795 2796 class FolderCreationAlarmListener implements OnAlarmListener { 2797 CellLayout layout; 2798 int cellX; 2799 int cellY; 2800 2801 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 2802 this.layout = layout; 2803 this.cellX = cellX; 2804 this.cellY = cellY; 2805 } 2806 2807 public void onAlarm(Alarm alarm) { 2808 if (mDragFolderRingAnimator == null) { 2809 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 2810 } 2811 mDragFolderRingAnimator.setCell(cellX, cellY); 2812 mDragFolderRingAnimator.setCellLayout(layout); 2813 mDragFolderRingAnimator.animateToAcceptState(); 2814 layout.showFolderAccept(mDragFolderRingAnimator); 2815 layout.clearDragOutlines(); 2816 mCreateUserFolderOnDrop = true; 2817 } 2818 } 2819 2820 @Override 2821 public void getHitRect(Rect outRect) { 2822 // We want the workspace to have the whole area of the display (it will find the correct 2823 // cell layout to drop to in the existing drag/drop logic. 2824 outRect.set(0, 0, mDisplayWidth, mDisplayHeight); 2825 } 2826 2827 /** 2828 * Add the item specified by dragInfo to the given layout. 2829 * @return true if successful 2830 */ 2831 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2832 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2833 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2834 return true; 2835 } 2836 mLauncher.showOutOfSpaceMessage(); 2837 return false; 2838 } 2839 2840 private void onDropExternal(int[] touchXY, Object dragInfo, 2841 CellLayout cellLayout, boolean insertAtFirst) { 2842 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 2843 } 2844 2845 /** 2846 * Drop an item that didn't originate on one of the workspace screens. 2847 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2848 * come from another app altogether. 2849 * 2850 * NOTE: This can also be called when we are outside of a drag event, when we want 2851 * to add an item to one of the workspace screens. 2852 */ 2853 private void onDropExternal(final int[] touchXY, final Object dragInfo, 2854 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 2855 final Runnable exitSpringLoadedRunnable = new Runnable() { 2856 @Override 2857 public void run() { 2858 mLauncher.exitSpringLoadedDragModeDelayed(true, false); 2859 } 2860 }; 2861 2862 ItemInfo info = (ItemInfo) dragInfo; 2863 int spanX = info.spanX; 2864 int spanY = info.spanY; 2865 if (mDragInfo != null) { 2866 spanX = mDragInfo.spanX; 2867 spanY = mDragInfo.spanY; 2868 } 2869 2870 final long container = mLauncher.isHotseatLayout(cellLayout) ? 2871 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2872 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2873 final int screen = indexOfChild(cellLayout); 2874 if (!mLauncher.isHotseatLayout(cellLayout) && screen != mCurrentPage 2875 && mState != State.SPRING_LOADED) { 2876 snapToPage(screen); 2877 } 2878 2879 if (info instanceof PendingAddItemInfo) { 2880 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 2881 2882 boolean findNearestVacantCell = true; 2883 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 2884 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 2885 cellLayout, mTargetCell); 2886 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, 2887 true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 2888 mDragTargetLayout, mTargetCell)) { 2889 findNearestVacantCell = false; 2890 } 2891 } 2892 if (findNearestVacantCell) { 2893 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], spanX, spanY, null, 2894 cellLayout, mTargetCell); 2895 } 2896 2897 Runnable onAnimationCompleteRunnable = new Runnable() { 2898 @Override 2899 public void run() { 2900 // When dragging and dropping from customization tray, we deal with creating 2901 // widgets/shortcuts/folders in a slightly different way 2902 switch (pendingInfo.itemType) { 2903 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 2904 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, 2905 container, screen, mTargetCell, null); 2906 break; 2907 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2908 mLauncher.processShortcutFromDrop(pendingInfo.componentName, 2909 container, screen, mTargetCell, null); 2910 break; 2911 default: 2912 throw new IllegalStateException("Unknown item type: " + 2913 pendingInfo.itemType); 2914 } 2915 cellLayout.onDragExit(); 2916 } 2917 }; 2918 2919 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 2920 // location and size on the home screen. 2921 RectF r = estimateItemPosition(cellLayout, pendingInfo, 2922 mTargetCell[0], mTargetCell[1], spanX, spanY); 2923 int loc[] = new int[2]; 2924 loc[0] = (int) r.left; 2925 loc[1] = (int) r.top; 2926 setFinalTransitionTransform(cellLayout); 2927 float cellLayoutScale = 2928 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(cellLayout, loc); 2929 resetTransitionTransform(cellLayout); 2930 2931 float dragViewScale = Math.min(r.width() / d.dragView.getMeasuredWidth(), 2932 r.height() / d.dragView.getMeasuredHeight()); 2933 // The animation will scale the dragView about its center, so we need to center about 2934 // the final location. 2935 loc[0] -= (d.dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 2936 loc[1] -= (d.dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 2937 2938 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, loc, 2939 dragViewScale * cellLayoutScale, onAnimationCompleteRunnable); 2940 } else { 2941 // This is for other drag/drop cases, like dragging from All Apps 2942 View view = null; 2943 2944 switch (info.itemType) { 2945 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 2946 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2947 if (info.container == NO_ID && info instanceof ApplicationInfo) { 2948 // Came from all apps -- make a copy 2949 info = new ShortcutInfo((ApplicationInfo) info); 2950 } 2951 view = mLauncher.createShortcut(R.layout.application, cellLayout, 2952 (ShortcutInfo) info); 2953 break; 2954 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 2955 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 2956 (FolderInfo) info, mIconCache); 2957 break; 2958 default: 2959 throw new IllegalStateException("Unknown item type: " + info.itemType); 2960 } 2961 2962 // First we find the cell nearest to point at which the item is 2963 // dropped, without any consideration to whether there is an item there. 2964 if (touchXY != null) { 2965 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 2966 cellLayout, mTargetCell); 2967 d.postAnimationRunnable = exitSpringLoadedRunnable; 2968 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, true, 2969 d.dragView, d.postAnimationRunnable)) { 2970 return; 2971 } 2972 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, d, true)) { 2973 return; 2974 } 2975 } 2976 2977 if (touchXY != null) { 2978 // when dragging and dropping, just find the closest free spot 2979 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], 1, 1, null, 2980 cellLayout, mTargetCell); 2981 } else { 2982 cellLayout.findCellForSpan(mTargetCell, 1, 1); 2983 } 2984 addInScreen(view, container, screen, mTargetCell[0], mTargetCell[1], info.spanX, 2985 info.spanY, insertAtFirst); 2986 cellLayout.onDropChild(view); 2987 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2988 cellLayout.getChildrenLayout().measureChild(view); 2989 2990 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, 2991 lp.cellX, lp.cellY); 2992 2993 if (d.dragView != null) { 2994 // We wrap the animation call in the temporary set and reset of the current 2995 // cellLayout to its final transform -- this means we animate the drag view to 2996 // the correct final location. 2997 setFinalTransitionTransform(cellLayout); 2998 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 2999 exitSpringLoadedRunnable); 3000 resetTransitionTransform(cellLayout); 3001 } 3002 } 3003 } 3004 3005 public void setFinalTransitionTransform(CellLayout layout) { 3006 if (isSwitchingState()) { 3007 int index = indexOfChild(layout); 3008 mCurrentScaleX = layout.getScaleX(); 3009 mCurrentScaleY = layout.getScaleY(); 3010 mCurrentTranslationX = layout.getTranslationX(); 3011 mCurrentTranslationY = layout.getTranslationY(); 3012 mCurrentRotationY = layout.getRotationY(); 3013 layout.setScaleX(mNewScaleXs[index]); 3014 layout.setScaleY(mNewScaleYs[index]); 3015 layout.setTranslationX(mNewTranslationXs[index]); 3016 layout.setTranslationY(mNewTranslationYs[index]); 3017 layout.setRotationY(mNewRotationYs[index]); 3018 } 3019 } 3020 public void resetTransitionTransform(CellLayout layout) { 3021 if (isSwitchingState()) { 3022 mCurrentScaleX = layout.getScaleX(); 3023 mCurrentScaleY = layout.getScaleY(); 3024 mCurrentTranslationX = layout.getTranslationX(); 3025 mCurrentTranslationY = layout.getTranslationY(); 3026 mCurrentRotationY = layout.getRotationY(); 3027 layout.setScaleX(mCurrentScaleX); 3028 layout.setScaleY(mCurrentScaleY); 3029 layout.setTranslationX(mCurrentTranslationX); 3030 layout.setTranslationY(mCurrentTranslationY); 3031 layout.setRotationY(mCurrentRotationY); 3032 } 3033 } 3034 3035 /** 3036 * Return the current {@link CellLayout}, correctly picking the destination 3037 * screen while a scroll is in progress. 3038 */ 3039 public CellLayout getCurrentDropLayout() { 3040 return (CellLayout) getChildAt(mNextPage == INVALID_PAGE ? mCurrentPage : mNextPage); 3041 } 3042 3043 /** 3044 * Return the current CellInfo describing our current drag; this method exists 3045 * so that Launcher can sync this object with the correct info when the activity is created/ 3046 * destroyed 3047 * 3048 */ 3049 public CellLayout.CellInfo getDragInfo() { 3050 return mDragInfo; 3051 } 3052 3053 /** 3054 * Calculate the nearest cell where the given object would be dropped. 3055 * 3056 * pixelX and pixelY should be in the coordinate system of layout 3057 */ 3058 private int[] findNearestVacantArea(int pixelX, int pixelY, 3059 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 3060 return layout.findNearestVacantArea( 3061 pixelX, pixelY, spanX, spanY, ignoreView, recycle); 3062 } 3063 3064 /** 3065 * Calculate the nearest cell where the given object would be dropped. 3066 * 3067 * pixelX and pixelY should be in the coordinate system of layout 3068 */ 3069 private int[] findNearestArea(int pixelX, int pixelY, 3070 int spanX, int spanY, CellLayout layout, int[] recycle) { 3071 return layout.findNearestArea( 3072 pixelX, pixelY, spanX, spanY, recycle); 3073 } 3074 3075 void setup(DragController dragController) { 3076 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3077 mDragController = dragController; 3078 3079 // hardware layers on children are enabled on startup, but should be disabled until 3080 // needed 3081 updateChildrenLayersEnabled(); 3082 setWallpaperDimension(); 3083 } 3084 3085 /** 3086 * Called at the end of a drag which originated on the workspace. 3087 */ 3088 public void onDropCompleted(View target, DragObject d, boolean success) { 3089 if (success) { 3090 if (target != this) { 3091 if (mDragInfo != null) { 3092 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 3093 if (mDragInfo.cell instanceof DropTarget) { 3094 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 3095 } 3096 } 3097 } 3098 } else if (mDragInfo != null) { 3099 // NOTE: When 'success' is true, onDragExit is called by the DragController before 3100 // calling onDropCompleted(). We call it ourselves here, but maybe this should be 3101 // moved into DragController.cancelDrag(). 3102 doDragExit(null); 3103 CellLayout cellLayout; 3104 if (mLauncher.isHotseatLayout(target)) { 3105 cellLayout = mLauncher.getHotseat().getLayout(); 3106 } else { 3107 cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3108 } 3109 cellLayout.onDropChild(mDragInfo.cell); 3110 } 3111 if (d.cancelled && mDragInfo.cell != null) { 3112 mDragInfo.cell.setVisibility(VISIBLE); 3113 } 3114 mDragOutline = null; 3115 mDragInfo = null; 3116 } 3117 3118 public boolean isDropEnabled() { 3119 return true; 3120 } 3121 3122 @Override 3123 protected void onRestoreInstanceState(Parcelable state) { 3124 super.onRestoreInstanceState(state); 3125 Launcher.setScreen(mCurrentPage); 3126 } 3127 3128 @Override 3129 public void scrollLeft() { 3130 if (!isSmall() && !mIsSwitchingState) { 3131 super.scrollLeft(); 3132 } 3133 Folder openFolder = getOpenFolder(); 3134 if (openFolder != null) { 3135 openFolder.completeDragExit(); 3136 } 3137 } 3138 3139 @Override 3140 public void scrollRight() { 3141 if (!isSmall() && !mIsSwitchingState) { 3142 super.scrollRight(); 3143 } 3144 Folder openFolder = getOpenFolder(); 3145 if (openFolder != null) { 3146 openFolder.completeDragExit(); 3147 } 3148 } 3149 3150 @Override 3151 public boolean onEnterScrollArea(int x, int y, int direction) { 3152 // Ignore the scroll area if we are dragging over the hot seat 3153 if (mLauncher.getHotseat() != null) { 3154 Rect r = new Rect(); 3155 mLauncher.getHotseat().getHitRect(r); 3156 if (r.contains(x, y)) { 3157 return false; 3158 } 3159 } 3160 3161 boolean result = false; 3162 if (!isSmall() && !mIsSwitchingState) { 3163 mInScrollArea = true; 3164 3165 final int page = mCurrentPage + (direction == DragController.SCROLL_LEFT ? -1 : 1); 3166 final CellLayout layout = (CellLayout) getChildAt(page); 3167 cancelFolderCreation(); 3168 3169 if (layout != null) { 3170 // Exit the current layout and mark the overlapping layout 3171 if (mDragTargetLayout != null) { 3172 mDragTargetLayout.setIsDragOverlapping(false); 3173 mDragTargetLayout.onDragExit(); 3174 } 3175 mDragTargetLayout = layout; 3176 mDragTargetLayout.setIsDragOverlapping(true); 3177 3178 // Workspace is responsible for drawing the edge glow on adjacent pages, 3179 // so we need to redraw the workspace when this may have changed. 3180 invalidate(); 3181 result = true; 3182 } 3183 } 3184 return result; 3185 } 3186 3187 @Override 3188 public boolean onExitScrollArea() { 3189 boolean result = false; 3190 if (mInScrollArea) { 3191 if (mDragTargetLayout != null) { 3192 mDragTargetLayout.setIsDragOverlapping(false); 3193 // Workspace is responsible for drawing the edge glow on adjacent pages, 3194 // so we need to redraw the workspace when this may have changed. 3195 invalidate(); 3196 } 3197 if (mDragTargetLayout != null && mDragHasEnteredWorkspace) { 3198 // Unmark the overlapping layout and re-enter the current layout 3199 mDragTargetLayout = getCurrentDropLayout(); 3200 mDragTargetLayout.onDragEnter(); 3201 } 3202 result = true; 3203 mInScrollArea = false; 3204 } 3205 return result; 3206 } 3207 3208 private void onResetScrollArea() { 3209 if (mDragTargetLayout != null) { 3210 // Unmark the overlapping layout 3211 mDragTargetLayout.setIsDragOverlapping(false); 3212 3213 // Workspace is responsible for drawing the edge glow on adjacent pages, 3214 // so we need to redraw the workspace when this may have changed. 3215 invalidate(); 3216 } 3217 mInScrollArea = false; 3218 } 3219 3220 /** 3221 * Returns a specific CellLayout 3222 */ 3223 CellLayout getParentCellLayoutForView(View v) { 3224 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3225 for (CellLayout layout : layouts) { 3226 if (layout.getChildrenLayout().indexOfChild(v) > -1) { 3227 return layout; 3228 } 3229 } 3230 return null; 3231 } 3232 3233 /** 3234 * Returns a list of all the CellLayouts in the workspace. 3235 */ 3236 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3237 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3238 int screenCount = getChildCount(); 3239 for (int screen = 0; screen < screenCount; screen++) { 3240 layouts.add(((CellLayout) getChildAt(screen))); 3241 } 3242 if (mLauncher.getHotseat() != null) { 3243 layouts.add(mLauncher.getHotseat().getLayout()); 3244 } 3245 return layouts; 3246 } 3247 3248 /** 3249 * We should only use this to search for specific children. Do not use this method to modify 3250 * CellLayoutChildren directly. 3251 */ 3252 ArrayList<CellLayoutChildren> getWorkspaceAndHotseatCellLayoutChildren() { 3253 ArrayList<CellLayoutChildren> childrenLayouts = new ArrayList<CellLayoutChildren>(); 3254 int screenCount = getChildCount(); 3255 for (int screen = 0; screen < screenCount; screen++) { 3256 childrenLayouts.add(((CellLayout) getChildAt(screen)).getChildrenLayout()); 3257 } 3258 if (mLauncher.getHotseat() != null) { 3259 childrenLayouts.add(mLauncher.getHotseat().getLayout().getChildrenLayout()); 3260 } 3261 return childrenLayouts; 3262 } 3263 3264 public Folder getFolderForTag(Object tag) { 3265 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3266 for (CellLayoutChildren layout: childrenLayouts) { 3267 int count = layout.getChildCount(); 3268 for (int i = 0; i < count; i++) { 3269 View child = layout.getChildAt(i); 3270 if (child instanceof Folder) { 3271 Folder f = (Folder) child; 3272 if (f.getInfo() == tag && f.getInfo().opened) { 3273 return f; 3274 } 3275 } 3276 } 3277 } 3278 return null; 3279 } 3280 3281 public View getViewForTag(Object tag) { 3282 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3283 for (CellLayoutChildren layout: childrenLayouts) { 3284 int count = layout.getChildCount(); 3285 for (int i = 0; i < count; i++) { 3286 View child = layout.getChildAt(i); 3287 if (child.getTag() == tag) { 3288 return child; 3289 } 3290 } 3291 } 3292 return null; 3293 } 3294 3295 void clearDropTargets() { 3296 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3297 for (CellLayoutChildren layout: childrenLayouts) { 3298 int childCount = layout.getChildCount(); 3299 for (int j = 0; j < childCount; j++) { 3300 View v = layout.getChildAt(j); 3301 if (v instanceof DropTarget) { 3302 mDragController.removeDropTarget((DropTarget) v); 3303 } 3304 } 3305 } 3306 } 3307 3308 void removeItems(final ArrayList<ApplicationInfo> apps) { 3309 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3310 3311 final HashSet<String> packageNames = new HashSet<String>(); 3312 final int appCount = apps.size(); 3313 for (int i = 0; i < appCount; i++) { 3314 packageNames.add(apps.get(i).componentName.getPackageName()); 3315 } 3316 3317 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3318 for (final CellLayout layoutParent: cellLayouts) { 3319 final ViewGroup layout = layoutParent.getChildrenLayout(); 3320 3321 // Avoid ANRs by treating each screen separately 3322 post(new Runnable() { 3323 public void run() { 3324 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3325 childrenToRemove.clear(); 3326 3327 int childCount = layout.getChildCount(); 3328 for (int j = 0; j < childCount; j++) { 3329 final View view = layout.getChildAt(j); 3330 Object tag = view.getTag(); 3331 3332 if (tag instanceof ShortcutInfo) { 3333 final ShortcutInfo info = (ShortcutInfo) tag; 3334 final Intent intent = info.intent; 3335 final ComponentName name = intent.getComponent(); 3336 3337 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3338 for (String packageName: packageNames) { 3339 if (packageName.equals(name.getPackageName())) { 3340 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3341 childrenToRemove.add(view); 3342 } 3343 } 3344 } 3345 } else if (tag instanceof FolderInfo) { 3346 final FolderInfo info = (FolderInfo) tag; 3347 final ArrayList<ShortcutInfo> contents = info.contents; 3348 final int contentsCount = contents.size(); 3349 final ArrayList<ShortcutInfo> appsToRemoveFromFolder = 3350 new ArrayList<ShortcutInfo>(); 3351 3352 for (int k = 0; k < contentsCount; k++) { 3353 final ShortcutInfo appInfo = contents.get(k); 3354 final Intent intent = appInfo.intent; 3355 final ComponentName name = intent.getComponent(); 3356 3357 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3358 for (String packageName: packageNames) { 3359 if (packageName.equals(name.getPackageName())) { 3360 appsToRemoveFromFolder.add(appInfo); 3361 } 3362 } 3363 } 3364 } 3365 for (ShortcutInfo item: appsToRemoveFromFolder) { 3366 info.remove(item); 3367 LauncherModel.deleteItemFromDatabase(mLauncher, item); 3368 } 3369 } else if (tag instanceof LauncherAppWidgetInfo) { 3370 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3371 final AppWidgetProviderInfo provider = 3372 widgets.getAppWidgetInfo(info.appWidgetId); 3373 if (provider != null) { 3374 for (String packageName: packageNames) { 3375 if (packageName.equals(provider.provider.getPackageName())) { 3376 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3377 childrenToRemove.add(view); 3378 } 3379 } 3380 } 3381 } 3382 } 3383 3384 childCount = childrenToRemove.size(); 3385 for (int j = 0; j < childCount; j++) { 3386 View child = childrenToRemove.get(j); 3387 // Note: We can not remove the view directly from CellLayoutChildren as this 3388 // does not re-mark the spaces as unoccupied. 3389 layoutParent.removeViewInLayout(child); 3390 if (child instanceof DropTarget) { 3391 mDragController.removeDropTarget((DropTarget)child); 3392 } 3393 } 3394 3395 if (childCount > 0) { 3396 layout.requestLayout(); 3397 layout.invalidate(); 3398 } 3399 } 3400 }); 3401 } 3402 } 3403 3404 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3405 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3406 for (CellLayoutChildren layout: childrenLayouts) { 3407 int childCount = layout.getChildCount(); 3408 for (int j = 0; j < childCount; j++) { 3409 final View view = layout.getChildAt(j); 3410 Object tag = view.getTag(); 3411 if (tag instanceof ShortcutInfo) { 3412 ShortcutInfo info = (ShortcutInfo)tag; 3413 // We need to check for ACTION_MAIN otherwise getComponent() might 3414 // return null for some shortcuts (for instance, for shortcuts to 3415 // web pages.) 3416 final Intent intent = info.intent; 3417 final ComponentName name = intent.getComponent(); 3418 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3419 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3420 final int appCount = apps.size(); 3421 for (int k = 0; k < appCount; k++) { 3422 ApplicationInfo app = apps.get(k); 3423 if (app.componentName.equals(name)) { 3424 info.setIcon(mIconCache.getIcon(info.intent)); 3425 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 3426 new FastBitmapDrawable(info.getIcon(mIconCache)), 3427 null, null); 3428 } 3429 } 3430 } 3431 } 3432 } 3433 } 3434 } 3435 3436 void moveToDefaultScreen(boolean animate) { 3437 if (!isSmall()) { 3438 if (animate) { 3439 snapToPage(mDefaultPage); 3440 } else { 3441 setCurrentPage(mDefaultPage); 3442 } 3443 } 3444 getChildAt(mDefaultPage).requestFocus(); 3445 } 3446 3447 @Override 3448 public void syncPages() { 3449 } 3450 3451 @Override 3452 public void syncPageItems(int page, boolean immediate) { 3453 } 3454 3455 @Override 3456 protected String getCurrentPageDescription() { 3457 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 3458 return String.format(mContext.getString(R.string.workspace_scroll_format), 3459 page + 1, getChildCount()); 3460 } 3461 3462 public void getLocationInDragLayer(int[] loc) { 3463 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 3464 } 3465 3466 void setFadeForOverScroll(float fade) { 3467 if (!isScrollingIndicatorEnabled()) return; 3468 3469 mOverscrollFade = fade; 3470 float reducedFade = 0.5f + 0.5f * (1 - fade); 3471 final ViewGroup parent = (ViewGroup) getParent(); 3472 final ImageView qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3473 final ImageView dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3474 final View scrollIndicator = getScrollingIndicator(); 3475 3476 cancelScrollingIndicatorAnimations(); 3477 if (qsbDivider != null) qsbDivider.setAlpha(reducedFade); 3478 if (dockDivider != null) dockDivider.setAlpha(reducedFade); 3479 scrollIndicator.setAlpha(1 - fade); 3480 } 3481} 3482