Workspace.java revision 42c29aedf2b518c4317fc534f3c87711b57bc9b5
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.AnimatorSet; 21import android.animation.ObjectAnimator; 22import android.animation.TimeInterpolator; 23import android.animation.ValueAnimator; 24import android.animation.ValueAnimator.AnimatorUpdateListener; 25import android.app.AlertDialog; 26import android.app.WallpaperManager; 27import android.appwidget.AppWidgetHostView; 28import android.appwidget.AppWidgetManager; 29import android.appwidget.AppWidgetProviderInfo; 30import android.content.ClipData; 31import android.content.ClipDescription; 32import android.content.ComponentName; 33import android.content.Context; 34import android.content.Intent; 35import android.content.res.Resources; 36import android.content.res.TypedArray; 37import android.graphics.Bitmap; 38import android.graphics.Camera; 39import android.graphics.Canvas; 40import android.graphics.Matrix; 41import android.graphics.Paint; 42import android.graphics.Point; 43import android.graphics.PorterDuff; 44import android.graphics.Rect; 45import android.graphics.RectF; 46import android.graphics.Region.Op; 47import android.graphics.drawable.Drawable; 48import android.os.IBinder; 49import android.os.Parcelable; 50import android.util.AttributeSet; 51import android.util.DisplayMetrics; 52import android.util.Log; 53import android.util.Pair; 54import android.view.Display; 55import android.view.DragEvent; 56import android.view.MotionEvent; 57import android.view.View; 58import android.view.ViewGroup; 59import android.view.animation.DecelerateInterpolator; 60import android.widget.ImageView; 61import android.widget.TextView; 62import android.widget.Toast; 63 64import com.android.launcher.R; 65import com.android.launcher2.FolderIcon.FolderRingAnimator; 66import com.android.launcher2.InstallWidgetReceiver.WidgetMimeTypeHandlerData; 67 68import java.util.ArrayList; 69import java.util.HashSet; 70import java.util.List; 71 72/** 73 * The workspace is a wide area with a wallpaper and a finite number of pages. 74 * Each page contains a number of icons, folders or widgets the user can 75 * interact with. A workspace is meant to be used with a fixed width only. 76 */ 77public class Workspace extends SmoothPagedView 78 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 79 DragController.DragListener, LauncherTransitionable { 80 @SuppressWarnings({"UnusedDeclaration"}) 81 private static final String TAG = "Launcher.Workspace"; 82 83 // Y rotation to apply to the workspace screens 84 private static final float WORKSPACE_ROTATION = 12.5f; 85 private static final float WORKSPACE_OVERSCROLL_ROTATION = 24f; 86 private static float CAMERA_DISTANCE = 6500; 87 88 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 89 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 90 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 91 92 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 93 private static final int ADJACENT_SCREEN_DROP_DURATION = 300; 94 private static final int FLING_THRESHOLD_VELOCITY = 500; 95 96 // These animators are used to fade the children's outlines 97 private ObjectAnimator mChildrenOutlineFadeInAnimation; 98 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 99 private float mChildrenOutlineAlpha = 0; 100 101 // These properties refer to the background protection gradient used for AllApps and Customize 102 private ValueAnimator mBackgroundFadeInAnimation; 103 private ValueAnimator mBackgroundFadeOutAnimation; 104 private Drawable mBackground; 105 boolean mDrawBackground = true; 106 private float mBackgroundAlpha = 0; 107 private float mOverScrollMaxBackgroundAlpha = 0.0f; 108 private int mOverScrollPageIndex = -1; 109 110 private float mWallpaperScrollRatio = 1.0f; 111 112 private final WallpaperManager mWallpaperManager; 113 private IBinder mWindowToken; 114 private static final float WALLPAPER_SCREENS_SPAN = 2f; 115 116 private int mDefaultPage; 117 118 /** 119 * CellInfo for the cell that is currently being dragged 120 */ 121 private CellLayout.CellInfo mDragInfo; 122 123 /** 124 * Target drop area calculated during last acceptDrop call. 125 */ 126 private int[] mTargetCell = new int[2]; 127 128 /** 129 * The CellLayout that is currently being dragged over 130 */ 131 private CellLayout mDragTargetLayout = null; 132 private boolean mDragHasEnteredWorkspace = false; 133 134 private Launcher mLauncher; 135 private IconCache mIconCache; 136 private DragController mDragController; 137 138 // These are temporary variables to prevent having to allocate a new object just to 139 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 140 private int[] mTempCell = new int[2]; 141 private int[] mTempEstimate = new int[2]; 142 private float[] mDragViewVisualCenter = new float[2]; 143 private float[] mTempDragCoordinates = new float[2]; 144 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 145 private float[] mTempDragBottomRightCoordinates = new float[2]; 146 private Matrix mTempInverseMatrix = new Matrix(); 147 148 private SpringLoadedDragController mSpringLoadedDragController; 149 private float mSpringLoadedShrinkFactor; 150 151 private static final int DEFAULT_CELL_COUNT_X = 4; 152 private static final int DEFAULT_CELL_COUNT_Y = 4; 153 154 // State variable that indicates whether the pages are small (ie when you're 155 // in all apps or customize mode) 156 157 enum State { NORMAL, SPRING_LOADED, SMALL }; 158 private State mState = State.NORMAL; 159 private boolean mIsSwitchingState = false; 160 161 boolean mAnimatingViewIntoPlace = false; 162 boolean mIsDragOccuring = false; 163 boolean mChildrenLayersEnabled = true; 164 165 /** Is the user is dragging an item near the edge of a page? */ 166 private boolean mInScrollArea = false; 167 168 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 169 private Bitmap mDragOutline = null; 170 private final Rect mTempRect = new Rect(); 171 private final int[] mTempXY = new int[2]; 172 private float mOverscrollFade = 0; 173 174 // Paint used to draw external drop outline 175 private final Paint mExternalDragOutlinePaint = new Paint(); 176 177 // Camera and Matrix used to determine the final position of a neighboring CellLayout 178 private final Matrix mMatrix = new Matrix(); 179 private final Camera mCamera = new Camera(); 180 private final float mTempFloat2[] = new float[2]; 181 182 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 183 int mWallpaperWidth; 184 int mWallpaperHeight; 185 WallpaperOffsetInterpolator mWallpaperOffset; 186 boolean mUpdateWallpaperOffsetImmediately = false; 187 private Runnable mDelayedResizeRunnable; 188 private int mDisplayWidth; 189 private int mDisplayHeight; 190 private int mWallpaperTravelWidth; 191 192 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 193 private static final int FOLDER_CREATION_TIMEOUT = 250; 194 private final Alarm mFolderCreationAlarm = new Alarm(); 195 private FolderRingAnimator mDragFolderRingAnimator = null; 196 private View mLastDragOverView = null; 197 private boolean mCreateUserFolderOnDrop = false; 198 199 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 200 private float mXDown; 201 private float mYDown; 202 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 203 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 204 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 205 206 // These variables are used for storing the initial and final values during workspace animations 207 private int mSavedScrollX; 208 private float mSavedRotationY; 209 private float mSavedTranslationX; 210 private float mCurrentScaleX; 211 private float mCurrentScaleY; 212 private float mCurrentRotationY; 213 private float mCurrentTranslationX; 214 private float mCurrentTranslationY; 215 private float[] mOldTranslationXs; 216 private float[] mOldTranslationYs; 217 private float[] mOldScaleXs; 218 private float[] mOldScaleYs; 219 private float[] mOldBackgroundAlphas; 220 private float[] mOldBackgroundAlphaMultipliers; 221 private float[] mOldAlphas; 222 private float[] mOldRotationYs; 223 private float[] mNewTranslationXs; 224 private float[] mNewTranslationYs; 225 private float[] mNewScaleXs; 226 private float[] mNewScaleYs; 227 private float[] mNewBackgroundAlphas; 228 private float[] mNewBackgroundAlphaMultipliers; 229 private float[] mNewAlphas; 230 private float[] mNewRotationYs; 231 private float mTransitionProgress = 1f; 232 233 /** 234 * Used to inflate the Workspace from XML. 235 * 236 * @param context The application's context. 237 * @param attrs The attributes set containing the Workspace's customization values. 238 */ 239 public Workspace(Context context, AttributeSet attrs) { 240 this(context, attrs, 0); 241 } 242 243 /** 244 * Used to inflate the Workspace from XML. 245 * 246 * @param context The application's context. 247 * @param attrs The attributes set containing the Workspace's customization values. 248 * @param defStyle Unused. 249 */ 250 public Workspace(Context context, AttributeSet attrs, int defStyle) { 251 super(context, attrs, defStyle); 252 mContentIsRefreshable = false; 253 254 // With workspace, data is available straight from the get-go 255 setDataIsReady(); 256 257 mFadeInAdjacentScreens = 258 getResources().getBoolean(R.bool.config_workspaceFadeAdjacentScreens); 259 mWallpaperManager = WallpaperManager.getInstance(context); 260 261 int cellCountX = DEFAULT_CELL_COUNT_X; 262 int cellCountY = DEFAULT_CELL_COUNT_Y; 263 264 TypedArray a = context.obtainStyledAttributes(attrs, 265 R.styleable.Workspace, defStyle, 0); 266 267 final Resources res = context.getResources(); 268 if (LauncherApplication.isScreenLarge()) { 269 // Determine number of rows/columns dynamically 270 // TODO: This code currently fails on tablets with an aspect ratio < 1.3. 271 // Around that ratio we should make cells the same size in portrait and 272 // landscape 273 TypedArray actionBarSizeTypedArray = 274 context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize }); 275 final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); 276 final float systemBarHeight = res.getDimension(R.dimen.status_bar_height); 277 final float smallestScreenDim = res.getConfiguration().smallestScreenWidthDp; 278 279 cellCountX = 1; 280 while (CellLayout.widthInPortrait(res, cellCountX + 1) <= smallestScreenDim) { 281 cellCountX++; 282 } 283 284 cellCountY = 1; 285 while (actionBarHeight + CellLayout.heightInLandscape(res, cellCountY + 1) 286 <= smallestScreenDim - systemBarHeight) { 287 cellCountY++; 288 } 289 } 290 291 mSpringLoadedShrinkFactor = 292 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 293 294 // if the value is manually specified, use that instead 295 cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX); 296 cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY); 297 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 298 a.recycle(); 299 300 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 301 setHapticFeedbackEnabled(false); 302 303 mLauncher = (Launcher) context; 304 initWorkspace(); 305 306 // Disable multitouch across the workspace/all apps/customize tray 307 setMotionEventSplittingEnabled(true); 308 } 309 310 // estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each 311 // dimension if unsuccessful 312 public int[] estimateItemSize(int hSpan, int vSpan, 313 PendingAddItemInfo pendingItemInfo, boolean springLoaded) { 314 int[] size = new int[2]; 315 if (getChildCount() > 0) { 316 CellLayout cl = (CellLayout) mLauncher.getWorkspace().getChildAt(0); 317 RectF r = estimateItemPosition(cl, pendingItemInfo, 0, 0, hSpan, vSpan); 318 size[0] = (int) r.width(); 319 size[1] = (int) r.height(); 320 if (springLoaded) { 321 size[0] *= mSpringLoadedShrinkFactor; 322 size[1] *= mSpringLoadedShrinkFactor; 323 } 324 return size; 325 } else { 326 size[0] = Integer.MAX_VALUE; 327 size[1] = Integer.MAX_VALUE; 328 return size; 329 } 330 } 331 public RectF estimateItemPosition(CellLayout cl, ItemInfo pendingInfo, 332 int hCell, int vCell, int hSpan, int vSpan) { 333 RectF r = new RectF(); 334 cl.cellToRect(hCell, vCell, hSpan, vSpan, r); 335 if (pendingInfo instanceof PendingAddWidgetInfo) { 336 PendingAddWidgetInfo widgetInfo = (PendingAddWidgetInfo) pendingInfo; 337 Rect p = AppWidgetHostView.getDefaultPaddingForWidget(mContext, 338 widgetInfo.componentName, null); 339 r.top += p.top; 340 r.left += p.left; 341 r.right -= p.right; 342 r.bottom -= p.bottom; 343 } 344 return r; 345 } 346 347 public void buildPageHardwareLayers() { 348 if (getWindowToken() != null) { 349 final int childCount = getChildCount(); 350 for (int i = 0; i < childCount; i++) { 351 CellLayout cl = (CellLayout) getChildAt(i); 352 cl.buildChildrenLayer(); 353 } 354 } 355 } 356 357 public void onDragStart(DragSource source, Object info, int dragAction) { 358 mIsDragOccuring = true; 359 updateChildrenLayersEnabled(); 360 mLauncher.lockScreenOrientationOnLargeUI(); 361 } 362 363 public void onDragEnd() { 364 mIsDragOccuring = false; 365 updateChildrenLayersEnabled(); 366 mLauncher.unlockScreenOrientationOnLargeUI(); 367 } 368 369 /** 370 * Initializes various states for this workspace. 371 */ 372 protected void initWorkspace() { 373 Context context = getContext(); 374 mCurrentPage = mDefaultPage; 375 Launcher.setScreen(mCurrentPage); 376 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 377 mIconCache = app.getIconCache(); 378 mExternalDragOutlinePaint.setAntiAlias(true); 379 setWillNotDraw(false); 380 setChildrenDrawnWithCacheEnabled(true); 381 382 try { 383 final Resources res = getResources(); 384 mBackground = res.getDrawable(R.drawable.apps_customize_bg); 385 } catch (Resources.NotFoundException e) { 386 // In this case, we will skip drawing background protection 387 } 388 389 mWallpaperOffset = new WallpaperOffsetInterpolator(); 390 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 391 mDisplayWidth = display.getWidth(); 392 mDisplayHeight = display.getHeight(); 393 mWallpaperTravelWidth = (int) (mDisplayWidth * 394 wallpaperTravelToScreenWidthRatio(mDisplayWidth, mDisplayHeight)); 395 396 mFlingThresholdVelocity = (int) (FLING_THRESHOLD_VELOCITY * mDensity); 397 398 } 399 400 @Override 401 protected int getScrollMode() { 402 return SmoothPagedView.X_LARGE_MODE; 403 } 404 405 @Override 406 protected void onViewAdded(View child) { 407 super.onViewAdded(child); 408 if (!(child instanceof CellLayout)) { 409 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 410 } 411 CellLayout cl = ((CellLayout) child); 412 cl.setOnInterceptTouchListener(this); 413 cl.setClickable(true); 414 cl.enableHardwareLayers(); 415 } 416 417 /** 418 * @return The open folder on the current screen, or null if there is none 419 */ 420 Folder getOpenFolder() { 421 DragLayer dragLayer = mLauncher.getDragLayer(); 422 int count = dragLayer.getChildCount(); 423 for (int i = 0; i < count; i++) { 424 View child = dragLayer.getChildAt(i); 425 if (child instanceof Folder) { 426 Folder folder = (Folder) child; 427 if (folder.getInfo().opened) 428 return folder; 429 } 430 } 431 return null; 432 } 433 434 boolean isTouchActive() { 435 return mTouchState != TOUCH_STATE_REST; 436 } 437 438 /** 439 * Adds the specified child in the specified screen. The position and dimension of 440 * the child are defined by x, y, spanX and spanY. 441 * 442 * @param child The child to add in one of the workspace's screens. 443 * @param screen The screen in which to add the child. 444 * @param x The X position of the child in the screen's grid. 445 * @param y The Y position of the child in the screen's grid. 446 * @param spanX The number of cells spanned horizontally by the child. 447 * @param spanY The number of cells spanned vertically by the child. 448 */ 449 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY) { 450 addInScreen(child, container, screen, x, y, spanX, spanY, false); 451 } 452 453 /** 454 * Adds the specified child in the specified screen. The position and dimension of 455 * the child are defined by x, y, spanX and spanY. 456 * 457 * @param child The child to add in one of the workspace's screens. 458 * @param screen The screen in which to add the child. 459 * @param x The X position of the child in the screen's grid. 460 * @param y The Y position of the child in the screen's grid. 461 * @param spanX The number of cells spanned horizontally by the child. 462 * @param spanY The number of cells spanned vertically by the child. 463 * @param insert When true, the child is inserted at the beginning of the children list. 464 */ 465 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY, 466 boolean insert) { 467 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 468 if (screen < 0 || screen >= getChildCount()) { 469 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 470 + " (was " + screen + "); skipping child"); 471 return; 472 } 473 } 474 475 final CellLayout layout; 476 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 477 layout = mLauncher.getHotseat().getLayout(); 478 child.setOnKeyListener(null); 479 480 // Hide folder title in the hotseat 481 if (child instanceof FolderIcon) { 482 ((FolderIcon) child).setTextVisible(false); 483 } 484 485 if (screen < 0) { 486 screen = mLauncher.getHotseat().getOrderInHotseat(x, y); 487 } else { 488 // Note: We do this to ensure that the hotseat is always laid out in the orientation 489 // of the hotseat in order regardless of which orientation they were added 490 x = mLauncher.getHotseat().getCellXFromOrder(screen); 491 y = mLauncher.getHotseat().getCellYFromOrder(screen); 492 } 493 } else { 494 // Show folder title if not in the hotseat 495 if (child instanceof FolderIcon) { 496 ((FolderIcon) child).setTextVisible(true); 497 } 498 499 layout = (CellLayout) getChildAt(screen); 500 child.setOnKeyListener(new IconKeyEventListener()); 501 } 502 503 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 504 if (lp == null) { 505 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 506 } else { 507 lp.cellX = x; 508 lp.cellY = y; 509 lp.cellHSpan = spanX; 510 lp.cellVSpan = spanY; 511 } 512 513 if (spanX < 0 && spanY < 0) { 514 lp.isLockedToGrid = false; 515 } 516 517 // Get the canonical child id to uniquely represent this view in this screen 518 int childId = LauncherModel.getCellLayoutChildId(container, screen, x, y, spanX, spanY); 519 boolean markCellsAsOccupied = !(child instanceof Folder); 520 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 521 // TODO: This branch occurs when the workspace is adding views 522 // outside of the defined grid 523 // maybe we should be deleting these items from the LauncherModel? 524 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 525 } 526 527 if (!(child instanceof Folder)) { 528 child.setHapticFeedbackEnabled(false); 529 child.setOnLongClickListener(mLongClickListener); 530 } 531 if (child instanceof DropTarget) { 532 mDragController.addDropTarget((DropTarget) child); 533 } 534 } 535 536 /** 537 * Check if the point (x, y) hits a given page. 538 */ 539 private boolean hitsPage(int index, float x, float y) { 540 final View page = getChildAt(index); 541 if (page != null) { 542 float[] localXY = { x, y }; 543 mapPointFromSelfToChild(page, localXY); 544 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 545 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 546 } 547 return false; 548 } 549 550 @Override 551 protected boolean hitsPreviousPage(float x, float y) { 552 // mNextPage is set to INVALID_PAGE whenever we are stationary. 553 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 554 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 555 556 // Only allow tap to next page on large devices, where there's significant margin outside 557 // the active workspace 558 return LauncherApplication.isScreenLarge() && hitsPage(current - 1, x, y); 559 } 560 561 @Override 562 protected boolean hitsNextPage(float x, float y) { 563 // mNextPage is set to INVALID_PAGE whenever we are stationary. 564 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 565 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 566 567 // Only allow tap to next page on large devices, where there's significant margin outside 568 // the active workspace 569 return LauncherApplication.isScreenLarge() && hitsPage(current + 1, x, y); 570 } 571 572 /** 573 * Called directly from a CellLayout (not by the framework), after we've been added as a 574 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 575 * that it should intercept touch events, which is not something that is normally supported. 576 */ 577 @Override 578 public boolean onTouch(View v, MotionEvent event) { 579 return (isSmall() || mIsSwitchingState); 580 } 581 582 public boolean isSwitchingState() { 583 return mIsSwitchingState; 584 } 585 586 protected void onWindowVisibilityChanged (int visibility) { 587 mLauncher.onWindowVisibilityChanged(visibility); 588 } 589 590 @Override 591 public boolean dispatchUnhandledMove(View focused, int direction) { 592 if (isSmall() || mIsSwitchingState) { 593 // when the home screens are shrunken, shouldn't allow side-scrolling 594 return false; 595 } 596 return super.dispatchUnhandledMove(focused, direction); 597 } 598 599 @Override 600 public boolean onInterceptTouchEvent(MotionEvent ev) { 601 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 602 case MotionEvent.ACTION_DOWN: 603 mXDown = ev.getX(); 604 mYDown = ev.getY(); 605 break; 606 case MotionEvent.ACTION_POINTER_UP: 607 case MotionEvent.ACTION_UP: 608 if (mTouchState == TOUCH_STATE_REST) { 609 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 610 if (!currentPage.lastDownOnOccupiedCell()) { 611 onWallpaperTap(ev); 612 } 613 } 614 } 615 return super.onInterceptTouchEvent(ev); 616 } 617 618 @Override 619 protected void determineScrollingStart(MotionEvent ev) { 620 if (!isSmall() && !mIsSwitchingState) { 621 float deltaX = Math.abs(ev.getX() - mXDown); 622 float deltaY = Math.abs(ev.getY() - mYDown); 623 624 if (Float.compare(deltaX, 0f) == 0) return; 625 626 float slope = deltaY / deltaX; 627 float theta = (float) Math.atan(slope); 628 629 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 630 cancelCurrentPageLongPress(); 631 } 632 633 if (theta > MAX_SWIPE_ANGLE) { 634 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 635 return; 636 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 637 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 638 // increase the touch slop to make it harder to begin scrolling the workspace. This 639 // results in vertically scrolling widgets to more easily. The higher the angle, the 640 // more we increase touch slop. 641 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 642 float extraRatio = (float) 643 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 644 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 645 } else { 646 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 647 super.determineScrollingStart(ev); 648 } 649 } 650 } 651 652 @Override 653 protected boolean isScrollingIndicatorEnabled() { 654 return mState != State.SPRING_LOADED; 655 } 656 657 protected void onPageBeginMoving() { 658 super.onPageBeginMoving(); 659 660 if (isHardwareAccelerated()) { 661 updateChildrenLayersEnabled(); 662 } else { 663 if (mNextPage != INVALID_PAGE) { 664 // we're snapping to a particular screen 665 enableChildrenCache(mCurrentPage, mNextPage); 666 } else { 667 // this is when user is actively dragging a particular screen, they might 668 // swipe it either left or right (but we won't advance by more than one screen) 669 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 670 } 671 } 672 673 // Only show page outlines as we pan if we are on large screen 674 if (LauncherApplication.isScreenLarge()) { 675 showOutlines(); 676 } 677 678 // Show the scroll indicator as you pan the page 679 showScrollingIndicator(false); 680 } 681 682 protected void onPageEndMoving() { 683 super.onPageEndMoving(); 684 685 if (isHardwareAccelerated()) { 686 updateChildrenLayersEnabled(); 687 } else { 688 clearChildrenCache(); 689 } 690 691 692 if (mDragController.isDragging()) { 693 if (isSmall()) { 694 // If we are in springloaded mode, then force an event to check if the current touch 695 // is under a new page (to scroll to) 696 mDragController.forceMoveEvent(); 697 } 698 } else { 699 // If we are not mid-dragging, hide the page outlines if we are on a large screen 700 if (LauncherApplication.isScreenLarge()) { 701 hideOutlines(); 702 } 703 704 // Hide the scroll indicator as you pan the page 705 if (!mDragController.isDragging()) { 706 hideScrollingIndicator(false); 707 } 708 } 709 mOverScrollMaxBackgroundAlpha = 0.0f; 710 mOverScrollPageIndex = -1; 711 712 if (mDelayedResizeRunnable != null) { 713 mDelayedResizeRunnable.run(); 714 mDelayedResizeRunnable = null; 715 } 716 } 717 718 @Override 719 protected void notifyPageSwitchListener() { 720 super.notifyPageSwitchListener(); 721 Launcher.setScreen(mCurrentPage); 722 }; 723 724 // As a ratio of screen height, the total distance we want the parallax effect to span 725 // horizontally 726 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 727 float aspectRatio = width / (float) height; 728 729 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 730 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 731 // We will use these two data points to extrapolate how much the wallpaper parallax effect 732 // to span (ie travel) at any aspect ratio: 733 734 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 735 final float ASPECT_RATIO_PORTRAIT = 10/16f; 736 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 737 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 738 739 // To find out the desired width at different aspect ratios, we use the following two 740 // formulas, where the coefficient on x is the aspect ratio (width/height): 741 // (16/10)x + y = 1.5 742 // (10/16)x + y = 1.2 743 // We solve for x and y and end up with a final formula: 744 final float x = 745 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 746 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 747 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 748 return x * aspectRatio + y; 749 } 750 751 // The range of scroll values for Workspace 752 private int getScrollRange() { 753 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 754 } 755 756 protected void setWallpaperDimension() { 757 DisplayMetrics displayMetrics = new DisplayMetrics(); 758 mLauncher.getWindowManager().getDefaultDisplay().getRealMetrics(displayMetrics); 759 final int maxDim = Math.max(displayMetrics.widthPixels, displayMetrics.heightPixels); 760 final int minDim = Math.min(displayMetrics.widthPixels, displayMetrics.heightPixels); 761 762 // We need to ensure that there is enough extra space in the wallpaper for the intended 763 // parallax effects 764 if (LauncherApplication.isScreenLarge()) { 765 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 766 mWallpaperHeight = maxDim; 767 } else { 768 mWallpaperWidth = Math.max((int) (minDim * WALLPAPER_SCREENS_SPAN), maxDim); 769 mWallpaperHeight = maxDim; 770 } 771 new Thread("setWallpaperDimension") { 772 public void run() { 773 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 774 } 775 }.start(); 776 } 777 778 public void setVerticalWallpaperOffset(float offset) { 779 mWallpaperOffset.setFinalY(offset); 780 } 781 public float getVerticalWallpaperOffset() { 782 return mWallpaperOffset.getCurrY(); 783 } 784 public void setHorizontalWallpaperOffset(float offset) { 785 mWallpaperOffset.setFinalX(offset); 786 } 787 public float getHorizontalWallpaperOffset() { 788 return mWallpaperOffset.getCurrX(); 789 } 790 791 private float wallpaperOffsetForCurrentScroll() { 792 // The wallpaper travel width is how far, from left to right, the wallpaper will move 793 // at this orientation. On tablets in portrait mode we don't move all the way to the 794 // edges of the wallpaper, or otherwise the parallax effect would be too strong. 795 int wallpaperTravelWidth = mWallpaperWidth; 796 if (LauncherApplication.isScreenLarge()) { 797 wallpaperTravelWidth = mWallpaperTravelWidth; 798 } 799 800 // Set wallpaper offset steps (1 / (number of screens - 1)) 801 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f); 802 803 // For the purposes of computing the scrollRange and overScrollOffset, we assume 804 // that mLayoutScale is 1. This means that when we're in spring-loaded mode, 805 // there's no discrepancy between the wallpaper offset for a given page. 806 float layoutScale = mLayoutScale; 807 mLayoutScale = 1f; 808 int scrollRange = getScrollRange(); 809 810 // Again, we adjust the wallpaper offset to be consistent between values of mLayoutScale 811 float adjustedScrollX = Math.max(0, Math.min(mScrollX, mMaxScrollX)); 812 adjustedScrollX *= mWallpaperScrollRatio; 813 mLayoutScale = layoutScale; 814 815 float scrollProgress = 816 adjustedScrollX / (float) scrollRange; 817 float offsetInDips = wallpaperTravelWidth * scrollProgress + 818 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 819 float offset = offsetInDips / (float) mWallpaperWidth; 820 return offset; 821 } 822 private void syncWallpaperOffsetWithScroll() { 823 final boolean enableWallpaperEffects = isHardwareAccelerated(); 824 if (enableWallpaperEffects) { 825 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 826 } 827 } 828 829 public void updateWallpaperOffsetImmediately() { 830 mUpdateWallpaperOffsetImmediately = true; 831 } 832 833 private void updateWallpaperOffsets() { 834 boolean updateNow = false; 835 boolean keepUpdating = true; 836 if (mUpdateWallpaperOffsetImmediately) { 837 updateNow = true; 838 keepUpdating = false; 839 mWallpaperOffset.jumpToFinal(); 840 mUpdateWallpaperOffsetImmediately = false; 841 } else { 842 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 843 } 844 if (updateNow) { 845 if (mWindowToken != null) { 846 mWallpaperManager.setWallpaperOffsets(mWindowToken, 847 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 848 } 849 } 850 if (keepUpdating) { 851 invalidate(); 852 } 853 } 854 855 @Override 856 protected void updateCurrentPageScroll() { 857 super.updateCurrentPageScroll(); 858 computeWallpaperScrollRatio(mCurrentPage); 859 } 860 861 @Override 862 protected void snapToPage(int whichPage) { 863 super.snapToPage(whichPage); 864 computeWallpaperScrollRatio(whichPage); 865 } 866 867 private void computeWallpaperScrollRatio(int page) { 868 // Here, we determine what the desired scroll would be with and without a layout scale, 869 // and compute a ratio between the two. This allows us to adjust the wallpaper offset 870 // as though there is no layout scale. 871 float layoutScale = mLayoutScale; 872 int scaled = getChildOffset(page) - getRelativeChildOffset(page); 873 mLayoutScale = 1.0f; 874 float unscaled = getChildOffset(page) - getRelativeChildOffset(page); 875 mLayoutScale = layoutScale; 876 if (scaled > 0) { 877 mWallpaperScrollRatio = (1.0f * unscaled) / scaled; 878 } else { 879 mWallpaperScrollRatio = 1f; 880 } 881 } 882 883 class WallpaperOffsetInterpolator { 884 float mFinalHorizontalWallpaperOffset = 0.0f; 885 float mFinalVerticalWallpaperOffset = 0.5f; 886 float mHorizontalWallpaperOffset = 0.0f; 887 float mVerticalWallpaperOffset = 0.5f; 888 long mLastWallpaperOffsetUpdateTime; 889 boolean mIsMovingFast; 890 boolean mOverrideHorizontalCatchupConstant; 891 float mHorizontalCatchupConstant = 0.35f; 892 float mVerticalCatchupConstant = 0.35f; 893 894 public WallpaperOffsetInterpolator() { 895 } 896 897 public void setOverrideHorizontalCatchupConstant(boolean override) { 898 mOverrideHorizontalCatchupConstant = override; 899 } 900 901 public void setHorizontalCatchupConstant(float f) { 902 mHorizontalCatchupConstant = f; 903 } 904 905 public void setVerticalCatchupConstant(float f) { 906 mVerticalCatchupConstant = f; 907 } 908 909 public boolean computeScrollOffset() { 910 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 911 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 912 mIsMovingFast = false; 913 return false; 914 } 915 boolean isLandscape = mDisplayWidth > mDisplayHeight; 916 917 long currentTime = System.currentTimeMillis(); 918 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 919 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 920 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 921 922 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 923 if (!mIsMovingFast && xdiff > 0.07) { 924 mIsMovingFast = true; 925 } 926 927 float fractionToCatchUpIn1MsHorizontal; 928 if (mOverrideHorizontalCatchupConstant) { 929 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 930 } else if (mIsMovingFast) { 931 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 932 } else { 933 // slow 934 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 935 } 936 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 937 938 fractionToCatchUpIn1MsHorizontal /= 33f; 939 fractionToCatchUpIn1MsVertical /= 33f; 940 941 final float UPDATE_THRESHOLD = 0.00001f; 942 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 943 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 944 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 945 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 946 947 // Don't have any lag between workspace and wallpaper on non-large devices 948 if (!LauncherApplication.isScreenLarge() || jumpToFinalValue) { 949 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 950 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 951 } else { 952 float percentToCatchUpVertical = 953 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 954 float percentToCatchUpHorizontal = 955 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 956 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 957 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 958 } 959 960 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 961 return true; 962 } 963 964 public float getCurrX() { 965 return mHorizontalWallpaperOffset; 966 } 967 968 public float getFinalX() { 969 return mFinalHorizontalWallpaperOffset; 970 } 971 972 public float getCurrY() { 973 return mVerticalWallpaperOffset; 974 } 975 976 public float getFinalY() { 977 return mFinalVerticalWallpaperOffset; 978 } 979 980 public void setFinalX(float x) { 981 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 982 } 983 984 public void setFinalY(float y) { 985 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 986 } 987 988 public void jumpToFinal() { 989 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 990 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 991 } 992 } 993 994 @Override 995 public void computeScroll() { 996 super.computeScroll(); 997 syncWallpaperOffsetWithScroll(); 998 } 999 1000 void showOutlines() { 1001 if (!isSmall() && !mIsSwitchingState) { 1002 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1003 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1004 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 1005 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 1006 mChildrenOutlineFadeInAnimation.start(); 1007 } 1008 } 1009 1010 void hideOutlines() { 1011 if (!isSmall() && !mIsSwitchingState) { 1012 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1013 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1014 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 1015 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 1016 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 1017 mChildrenOutlineFadeOutAnimation.start(); 1018 } 1019 } 1020 1021 public void showOutlinesTemporarily() { 1022 if (!mIsPageMoving && !isTouchActive()) { 1023 snapToPage(mCurrentPage); 1024 } 1025 } 1026 1027 public void setChildrenOutlineAlpha(float alpha) { 1028 mChildrenOutlineAlpha = alpha; 1029 for (int i = 0; i < getChildCount(); i++) { 1030 CellLayout cl = (CellLayout) getChildAt(i); 1031 cl.setBackgroundAlpha(alpha); 1032 } 1033 } 1034 1035 public float getChildrenOutlineAlpha() { 1036 return mChildrenOutlineAlpha; 1037 } 1038 1039 void disableBackground() { 1040 mDrawBackground = false; 1041 } 1042 void enableBackground() { 1043 mDrawBackground = true; 1044 } 1045 1046 private void animateBackgroundGradient(float finalAlpha, boolean animated) { 1047 if (mBackground == null) return; 1048 if (mBackgroundFadeInAnimation != null) { 1049 mBackgroundFadeInAnimation.cancel(); 1050 mBackgroundFadeInAnimation = null; 1051 } 1052 if (mBackgroundFadeOutAnimation != null) { 1053 mBackgroundFadeOutAnimation.cancel(); 1054 mBackgroundFadeOutAnimation = null; 1055 } 1056 float startAlpha = getBackgroundAlpha(); 1057 if (finalAlpha != startAlpha) { 1058 if (animated) { 1059 mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(startAlpha, finalAlpha); 1060 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1061 public void onAnimationUpdate(ValueAnimator animation) { 1062 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1063 } 1064 }); 1065 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1066 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1067 mBackgroundFadeOutAnimation.start(); 1068 } else { 1069 setBackgroundAlpha(finalAlpha); 1070 } 1071 } 1072 } 1073 1074 public void setBackgroundAlpha(float alpha) { 1075 if (alpha != mBackgroundAlpha) { 1076 mBackgroundAlpha = alpha; 1077 invalidate(); 1078 } 1079 } 1080 1081 public float getBackgroundAlpha() { 1082 return mBackgroundAlpha; 1083 } 1084 1085 /** 1086 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 1087 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 1088 * as being larger. This method computes what offset the rotated view should be translated 1089 * in order to minimize this perceived gap. 1090 * @param degrees Angle of the view 1091 * @param width Width of the view 1092 * @param height Height of the view 1093 * @return Offset to be used in a View.setTranslationX() call 1094 */ 1095 private float getOffsetXForRotation(float degrees, int width, int height) { 1096 mMatrix.reset(); 1097 mCamera.save(); 1098 mCamera.rotateY(Math.abs(degrees)); 1099 mCamera.getMatrix(mMatrix); 1100 mCamera.restore(); 1101 1102 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 1103 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 1104 mTempFloat2[0] = width; 1105 mTempFloat2[1] = height; 1106 mMatrix.mapPoints(mTempFloat2); 1107 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 1108 } 1109 1110 float backgroundAlphaInterpolator(float r) { 1111 float pivotA = 0.1f; 1112 float pivotB = 0.4f; 1113 if (r < pivotA) { 1114 return 0; 1115 } else if (r > pivotB) { 1116 return 1.0f; 1117 } else { 1118 return (r - pivotA)/(pivotB - pivotA); 1119 } 1120 } 1121 1122 float overScrollBackgroundAlphaInterpolator(float r) { 1123 float threshold = 0.08f; 1124 1125 if (r > mOverScrollMaxBackgroundAlpha) { 1126 mOverScrollMaxBackgroundAlpha = r; 1127 } else if (r < mOverScrollMaxBackgroundAlpha) { 1128 r = mOverScrollMaxBackgroundAlpha; 1129 } 1130 1131 return Math.min(r / threshold, 1.0f); 1132 } 1133 1134 private void screenScrolledLargeUI(int screenCenter) { 1135 if (isSwitchingState()) return; 1136 boolean isInOverscroll = false; 1137 for (int i = 0; i < getChildCount(); i++) { 1138 CellLayout cl = (CellLayout) getChildAt(i); 1139 if (cl != null) { 1140 float scrollProgress = getScrollProgress(screenCenter, cl, i); 1141 float rotation = WORKSPACE_ROTATION * scrollProgress; 1142 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1143 1144 // If the current page (i) is being over scrolled, we use a different 1145 // set of rules for setting the background alpha multiplier. 1146 if (!isSmall()) { 1147 if ((mOverScrollX < 0 && i == 0) || (mOverScrollX > mMaxScrollX && 1148 i == getChildCount() -1)) { 1149 isInOverscroll = true; 1150 rotation *= -1; 1151 cl.setBackgroundAlphaMultiplier( 1152 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 1153 mOverScrollPageIndex = i; 1154 cl.setOverScrollAmount(Math.abs(scrollProgress), i == 0); 1155 cl.setPivotX(cl.getMeasuredWidth() * (i == 0 ? 0.75f : 0.25f)); 1156 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1157 cl.setOverscrollTransformsDirty(true); 1158 } else if (mOverScrollPageIndex != i) { 1159 cl.setBackgroundAlphaMultiplier( 1160 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1161 } 1162 } 1163 cl.setTranslationX(translationX); 1164 cl.setRotationY(rotation); 1165 if (mFadeInAdjacentScreens && !isSmall()) { 1166 float alpha = 1 - Math.abs(scrollProgress); 1167 cl.setAlpha(alpha); 1168 } 1169 } 1170 } 1171 if (!isSwitchingState() && !isInOverscroll) { 1172 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1173 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1174 } 1175 invalidate(); 1176 } 1177 1178 private void screenScrolledStandardUI(int screenCenter) { 1179 if (mOverScrollX < 0 || mOverScrollX > mMaxScrollX) { 1180 int index = mOverScrollX < 0 ? 0 : getChildCount() - 1; 1181 CellLayout cl = (CellLayout) getChildAt(index); 1182 float scrollProgress = getScrollProgress(screenCenter, cl, index); 1183 cl.setOverScrollAmount(Math.abs(scrollProgress), index == 0); 1184 float rotation = - WORKSPACE_OVERSCROLL_ROTATION * scrollProgress; 1185 cl.setCameraDistance(mDensity * CAMERA_DISTANCE); 1186 cl.setPivotX(cl.getMeasuredWidth() * (index == 0 ? 0.75f : 0.25f)); 1187 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1188 cl.setRotationY(rotation); 1189 cl.setOverscrollTransformsDirty(true); 1190 setFadeForOverScroll(Math.abs(scrollProgress)); 1191 } else { 1192 if (mOverscrollFade != 0) { 1193 setFadeForOverScroll(0); 1194 } 1195 // We don't want to mess with the translations during transitions 1196 if (!isSwitchingState()) { 1197 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1198 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1199 } 1200 } 1201 } 1202 1203 @Override 1204 protected void screenScrolled(int screenCenter) { 1205 if (LauncherApplication.isScreenLarge()) { 1206 // We don't call super.screenScrolled() here because we handle the adjacent pages alpha 1207 // ourselves (for efficiency), and there are no scrolling indicators to update. 1208 screenScrolledLargeUI(screenCenter); 1209 } else { 1210 super.screenScrolled(screenCenter); 1211 screenScrolledStandardUI(screenCenter); 1212 } 1213 } 1214 1215 @Override 1216 protected void overScroll(float amount) { 1217 if (LauncherApplication.isScreenLarge()) { 1218 dampedOverScroll(amount); 1219 } else { 1220 acceleratedOverScroll(amount); 1221 } 1222 } 1223 1224 protected void onAttachedToWindow() { 1225 super.onAttachedToWindow(); 1226 mWindowToken = getWindowToken(); 1227 computeScroll(); 1228 mDragController.setWindowToken(mWindowToken); 1229 } 1230 1231 protected void onDetachedFromWindow() { 1232 mWindowToken = null; 1233 } 1234 1235 @Override 1236 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1237 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1238 mUpdateWallpaperOffsetImmediately = true; 1239 } 1240 super.onLayout(changed, left, top, right, bottom); 1241 } 1242 1243 @Override 1244 protected void onDraw(Canvas canvas) { 1245 updateWallpaperOffsets(); 1246 1247 // Draw the background gradient if necessary 1248 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1249 int alpha = (int) (mBackgroundAlpha * 255); 1250 mBackground.setAlpha(alpha); 1251 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1252 getMeasuredHeight()); 1253 mBackground.draw(canvas); 1254 } 1255 1256 super.onDraw(canvas); 1257 } 1258 1259 boolean isDrawingBackgroundGradient() { 1260 return (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground); 1261 } 1262 1263 @Override 1264 protected void dispatchDraw(Canvas canvas) { 1265 super.dispatchDraw(canvas); 1266 1267 if (mInScrollArea && !LauncherApplication.isScreenLarge()) { 1268 final int width = getWidth(); 1269 final int height = getHeight(); 1270 final int pageHeight = getChildAt(0).getHeight(); 1271 1272 // Set the height of the outline to be the height of the page 1273 final int offset = (height - pageHeight - mPaddingTop - mPaddingBottom) / 2; 1274 final int paddingTop = mPaddingTop + offset; 1275 final int paddingBottom = mPaddingBottom + offset; 1276 1277 final int page = (mNextPage != INVALID_PAGE ? mNextPage : mCurrentPage); 1278 final CellLayout leftPage = (CellLayout) getChildAt(page - 1); 1279 final CellLayout rightPage = (CellLayout) getChildAt(page + 1); 1280 1281 if (leftPage != null && leftPage.getIsDragOverlapping()) { 1282 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left_holo); 1283 d.setBounds(mScrollX, paddingTop, mScrollX + d.getIntrinsicWidth(), 1284 height - paddingBottom); 1285 d.draw(canvas); 1286 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 1287 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right_holo); 1288 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), paddingTop, mScrollX + width, 1289 height - paddingBottom); 1290 d.draw(canvas); 1291 } 1292 } 1293 } 1294 1295 @Override 1296 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1297 if (!mLauncher.isAllAppsVisible()) { 1298 final Folder openFolder = getOpenFolder(); 1299 if (openFolder != null) { 1300 return openFolder.requestFocus(direction, previouslyFocusedRect); 1301 } else { 1302 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1303 } 1304 } 1305 return false; 1306 } 1307 1308 @Override 1309 public int getDescendantFocusability() { 1310 if (isSmall()) { 1311 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1312 } 1313 return super.getDescendantFocusability(); 1314 } 1315 1316 @Override 1317 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1318 if (!mLauncher.isAllAppsVisible()) { 1319 final Folder openFolder = getOpenFolder(); 1320 if (openFolder != null) { 1321 openFolder.addFocusables(views, direction); 1322 } else { 1323 super.addFocusables(views, direction, focusableMode); 1324 } 1325 } 1326 } 1327 1328 public boolean isSmall() { 1329 return mState == State.SMALL || mState == State.SPRING_LOADED; 1330 } 1331 1332 void enableChildrenCache(int fromPage, int toPage) { 1333 if (fromPage > toPage) { 1334 final int temp = fromPage; 1335 fromPage = toPage; 1336 toPage = temp; 1337 } 1338 1339 final int screenCount = getChildCount(); 1340 1341 fromPage = Math.max(fromPage, 0); 1342 toPage = Math.min(toPage, screenCount - 1); 1343 1344 for (int i = fromPage; i <= toPage; i++) { 1345 final CellLayout layout = (CellLayout) getChildAt(i); 1346 layout.setChildrenDrawnWithCacheEnabled(true); 1347 layout.setChildrenDrawingCacheEnabled(true); 1348 } 1349 } 1350 1351 void clearChildrenCache() { 1352 final int screenCount = getChildCount(); 1353 for (int i = 0; i < screenCount; i++) { 1354 final CellLayout layout = (CellLayout) getChildAt(i); 1355 layout.setChildrenDrawnWithCacheEnabled(false); 1356 // In software mode, we don't want the items to continue to be drawn into bitmaps 1357 if (!isHardwareAccelerated()) { 1358 layout.setChildrenDrawingCacheEnabled(false); 1359 } 1360 } 1361 } 1362 1363 private void updateChildrenLayersEnabled() { 1364 boolean small = isSmall() || mIsSwitchingState; 1365 boolean dragging = mAnimatingViewIntoPlace || mIsDragOccuring; 1366 boolean enableChildrenLayers = small || dragging || isPageMoving(); 1367 1368 if (enableChildrenLayers != mChildrenLayersEnabled) { 1369 mChildrenLayersEnabled = enableChildrenLayers; 1370 for (int i = 0; i < getPageCount(); i++) { 1371 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(mChildrenLayersEnabled); 1372 } 1373 } 1374 } 1375 1376 protected void onWallpaperTap(MotionEvent ev) { 1377 final int[] position = mTempCell; 1378 getLocationOnScreen(position); 1379 1380 int pointerIndex = ev.getActionIndex(); 1381 position[0] += (int) ev.getX(pointerIndex); 1382 position[1] += (int) ev.getY(pointerIndex); 1383 1384 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1385 ev.getAction() == MotionEvent.ACTION_UP 1386 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1387 position[0], position[1], 0, null); 1388 } 1389 1390 /* 1391 * This interpolator emulates the rate at which the perceived scale of an object changes 1392 * as its distance from a camera increases. When this interpolator is applied to a scale 1393 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1394 * from the camera. 1395 */ 1396 static class ZInterpolator implements TimeInterpolator { 1397 private float focalLength; 1398 1399 public ZInterpolator(float foc) { 1400 focalLength = foc; 1401 } 1402 1403 public float getInterpolation(float input) { 1404 return (1.0f - focalLength / (focalLength + input)) / 1405 (1.0f - focalLength / (focalLength + 1.0f)); 1406 } 1407 } 1408 1409 /* 1410 * The exact reverse of ZInterpolator. 1411 */ 1412 static class InverseZInterpolator implements TimeInterpolator { 1413 private ZInterpolator zInterpolator; 1414 public InverseZInterpolator(float foc) { 1415 zInterpolator = new ZInterpolator(foc); 1416 } 1417 public float getInterpolation(float input) { 1418 return 1 - zInterpolator.getInterpolation(1 - input); 1419 } 1420 } 1421 1422 /* 1423 * ZInterpolator compounded with an ease-out. 1424 */ 1425 static class ZoomOutInterpolator implements TimeInterpolator { 1426 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(0.75f); 1427 private final ZInterpolator zInterpolator = new ZInterpolator(0.13f); 1428 1429 public float getInterpolation(float input) { 1430 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1431 } 1432 } 1433 1434 /* 1435 * InvereZInterpolator compounded with an ease-out. 1436 */ 1437 static class ZoomInInterpolator implements TimeInterpolator { 1438 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1439 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1440 1441 public float getInterpolation(float input) { 1442 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1443 } 1444 } 1445 1446 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1447 1448 /* 1449 * 1450 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1451 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1452 * 1453 * These methods mark the appropriate pages as accepting drops (which alters their visual 1454 * appearance). 1455 * 1456 */ 1457 public void onDragStartedWithItem(View v) { 1458 final Canvas canvas = new Canvas(); 1459 1460 // We need to add extra padding to the bitmap to make room for the glow effect 1461 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1462 1463 // The outline is used to visualize where the item will land if dropped 1464 mDragOutline = createDragOutline(v, canvas, bitmapPadding); 1465 } 1466 1467 public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, Paint alphaClipPaint) { 1468 final Canvas canvas = new Canvas(); 1469 1470 // We need to add extra padding to the bitmap to make room for the glow effect 1471 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1472 1473 int[] size = estimateItemSize(info.spanX, info.spanY, info, false); 1474 1475 // The outline is used to visualize where the item will land if dropped 1476 mDragOutline = createDragOutline(b, canvas, bitmapPadding, size[0], size[1], alphaClipPaint); 1477 } 1478 1479 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1480 // never dragged over 1481 public void onDragStopped(boolean success) { 1482 // In the success case, DragController has already called onDragExit() 1483 if (!success) { 1484 doDragExit(null); 1485 } 1486 } 1487 1488 public void exitWidgetResizeMode() { 1489 DragLayer dragLayer = mLauncher.getDragLayer(); 1490 dragLayer.clearAllResizeFrames(); 1491 } 1492 1493 private void initAnimationArrays() { 1494 final int childCount = getChildCount(); 1495 if (mOldTranslationXs != null) return; 1496 mOldTranslationXs = new float[childCount]; 1497 mOldTranslationYs = new float[childCount]; 1498 mOldScaleXs = new float[childCount]; 1499 mOldScaleYs = new float[childCount]; 1500 mOldBackgroundAlphas = new float[childCount]; 1501 mOldBackgroundAlphaMultipliers = new float[childCount]; 1502 mOldAlphas = new float[childCount]; 1503 mOldRotationYs = new float[childCount]; 1504 mNewTranslationXs = new float[childCount]; 1505 mNewTranslationYs = new float[childCount]; 1506 mNewScaleXs = new float[childCount]; 1507 mNewScaleYs = new float[childCount]; 1508 mNewBackgroundAlphas = new float[childCount]; 1509 mNewBackgroundAlphaMultipliers = new float[childCount]; 1510 mNewAlphas = new float[childCount]; 1511 mNewRotationYs = new float[childCount]; 1512 } 1513 1514 Animator getChangeStateAnimation(final State state, boolean animated) { 1515 return getChangeStateAnimation(state, animated, 0); 1516 } 1517 1518 Animator getChangeStateAnimation(final State state, boolean animated, int delay) { 1519 if (mState == state) { 1520 return null; 1521 } 1522 1523 // Initialize animation arrays for the first time if necessary 1524 initAnimationArrays(); 1525 1526 AnimatorSet anim = animated ? new AnimatorSet() : null; 1527 1528 // Stop any scrolling, move to the current page right away 1529 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1530 1531 final State oldState = mState; 1532 final boolean oldStateIsNormal = (oldState == State.NORMAL); 1533 final boolean oldStateIsSmall = (oldState == State.SMALL); 1534 mState = state; 1535 final boolean stateIsNormal = (state == State.NORMAL); 1536 final boolean stateIsSpringLoaded = (state == State.SPRING_LOADED); 1537 final boolean stateIsSmall = (state == State.SMALL); 1538 float finalScaleFactor = 1.0f; 1539 float finalBackgroundAlpha = stateIsSpringLoaded ? 1.0f : 0f; 1540 float translationX = 0; 1541 float translationY = 0; 1542 boolean zoomIn = true; 1543 1544 if (state != State.NORMAL) { 1545 finalScaleFactor = mSpringLoadedShrinkFactor - (stateIsSmall ? 0.1f : 0); 1546 if (oldStateIsNormal && stateIsSmall) { 1547 zoomIn = false; 1548 setLayoutScale(finalScaleFactor); 1549 updateChildrenLayersEnabled(); 1550 } else { 1551 finalBackgroundAlpha = 1.0f; 1552 setLayoutScale(finalScaleFactor); 1553 } 1554 } else { 1555 setLayoutScale(1.0f); 1556 } 1557 1558 final int duration = zoomIn ? 1559 getResources().getInteger(R.integer.config_workspaceUnshrinkTime) : 1560 getResources().getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1561 for (int i = 0; i < getChildCount(); i++) { 1562 final CellLayout cl = (CellLayout) getChildAt(i); 1563 float rotation = 0f; 1564 float initialAlpha = cl.getAlpha(); 1565 float finalAlphaMultiplierValue = 1f; 1566 float finalAlpha = (!mFadeInAdjacentScreens || stateIsSpringLoaded || 1567 (i == mCurrentPage)) ? 1f : 0f; 1568 1569 // Determine the pages alpha during the state transition 1570 if ((oldStateIsSmall && stateIsNormal) || 1571 (oldStateIsNormal && stateIsSmall)) { 1572 // To/from workspace - only show the current page unless the transition is not 1573 // animated and the animation end callback below doesn't run 1574 if (i == mCurrentPage || !animated) { 1575 finalAlpha = 1f; 1576 finalAlphaMultiplierValue = 0f; 1577 } else { 1578 initialAlpha = 0f; 1579 finalAlpha = 0f; 1580 } 1581 } 1582 1583 // Update the rotation of the screen (don't apply rotation on Phone UI) 1584 if (LauncherApplication.isScreenLarge()) { 1585 if (i < mCurrentPage) { 1586 rotation = WORKSPACE_ROTATION; 1587 } else if (i > mCurrentPage) { 1588 rotation = -WORKSPACE_ROTATION; 1589 } 1590 } 1591 1592 // If the screen is not xlarge, then don't rotate the CellLayouts 1593 // NOTE: If we don't update the side pages alpha, then we should not hide the side 1594 // pages. see unshrink(). 1595 if (LauncherApplication.isScreenLarge()) { 1596 translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1597 } 1598 1599 mOldAlphas[i] = initialAlpha; 1600 mNewAlphas[i] = finalAlpha; 1601 if (animated) { 1602 mOldTranslationXs[i] = cl.getTranslationX(); 1603 mOldTranslationYs[i] = cl.getTranslationY(); 1604 mOldScaleXs[i] = cl.getScaleX(); 1605 mOldScaleYs[i] = cl.getScaleY(); 1606 mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1607 mOldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1608 mOldRotationYs[i] = cl.getRotationY(); 1609 1610 mNewTranslationXs[i] = translationX; 1611 mNewTranslationYs[i] = translationY; 1612 mNewScaleXs[i] = finalScaleFactor; 1613 mNewScaleYs[i] = finalScaleFactor; 1614 mNewBackgroundAlphas[i] = finalBackgroundAlpha; 1615 mNewBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1616 mNewRotationYs[i] = rotation; 1617 } else { 1618 cl.setTranslationX(translationX); 1619 cl.setTranslationY(translationY); 1620 cl.setScaleX(finalScaleFactor); 1621 cl.setScaleY(finalScaleFactor); 1622 cl.setBackgroundAlpha(finalBackgroundAlpha); 1623 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1624 cl.setAlpha(finalAlpha); 1625 cl.setRotationY(rotation); 1626 } 1627 } 1628 1629 if (animated) { 1630 for (int index = 0; index < getChildCount(); index++) { 1631 final int i = index; 1632 final CellLayout cl = (CellLayout) getChildAt(i); 1633 if (mOldAlphas[i] == 0 && mNewAlphas[i] == 0) { 1634 cl.setTranslationX(mNewTranslationXs[i]); 1635 cl.setTranslationY(mNewTranslationYs[i]); 1636 cl.setScaleX(mNewScaleXs[i]); 1637 cl.setScaleY(mNewScaleYs[i]); 1638 cl.setBackgroundAlpha(mNewBackgroundAlphas[i]); 1639 cl.setBackgroundAlphaMultiplier(mNewBackgroundAlphaMultipliers[i]); 1640 cl.setAlpha(mNewAlphas[i]); 1641 cl.setRotationY(mNewRotationYs[i]); 1642 } else { 1643 LauncherViewPropertyAnimator a = new LauncherViewPropertyAnimator(cl); 1644 a.translationX(mNewTranslationXs[i]) 1645 .translationY(mNewTranslationYs[i]) 1646 .scaleX(mNewScaleXs[i]) 1647 .scaleY(mNewScaleYs[i]) 1648 .setDuration(duration) 1649 .setInterpolator(mZoomInInterpolator); 1650 if (mOldAlphas[i] != mNewAlphas[i]) { 1651 a.alpha(mNewAlphas[i]); 1652 } 1653 anim.play(a); 1654 if (mOldRotationYs[i] != 0 || mNewRotationYs[i] != 0) { 1655 ValueAnimator rotate = ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1656 rotate.setInterpolator(new DecelerateInterpolator(2.0f)); 1657 rotate.addUpdateListener(new LauncherAnimatorUpdateListener() { 1658 public void onAnimationUpdate(float a, float b) { 1659 cl.setRotationY(a * mOldRotationYs[i] + b * mNewRotationYs[i]); 1660 } 1661 }); 1662 anim.play(rotate); 1663 } 1664 if (mOldBackgroundAlphas[i] != 0 || 1665 mNewBackgroundAlphas[i] != 0 || 1666 mOldBackgroundAlphaMultipliers[i] != 0 || 1667 mNewBackgroundAlphaMultipliers[i] != 0) { 1668 ValueAnimator bgAnim = ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1669 bgAnim.setInterpolator(mZoomInInterpolator); 1670 bgAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1671 public void onAnimationUpdate(float a, float b) { 1672 cl.setBackgroundAlpha( 1673 a * mOldBackgroundAlphas[i] + 1674 b * mNewBackgroundAlphas[i]); 1675 cl.setBackgroundAlphaMultiplier( 1676 a * mOldBackgroundAlphaMultipliers[i] + 1677 b * mNewBackgroundAlphaMultipliers[i]); 1678 } 1679 }); 1680 anim.play(bgAnim); 1681 } 1682 } 1683 } 1684 anim.setStartDelay(delay); 1685 } 1686 1687 if (stateIsSpringLoaded) { 1688 // Right now we're covered by Apps Customize 1689 // Show the background gradient immediately, so the gradient will 1690 // be showing once AppsCustomize disappears 1691 animateBackgroundGradient(getResources().getInteger( 1692 R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, false); 1693 } else { 1694 // Fade the background gradient away 1695 animateBackgroundGradient(0f, true); 1696 } 1697 return anim; 1698 } 1699 1700 @Override 1701 public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) { 1702 mIsSwitchingState = true; 1703 } 1704 1705 @Override 1706 public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) { 1707 mIsSwitchingState = false; 1708 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 1709 updateChildrenLayersEnabled(); 1710 // The code in getChangeStateAnimation to determine initialAlpha and finalAlpha will ensure 1711 // ensure that only the current page is visible during (and subsequently, after) the 1712 // transition animation. If fade adjacent pages is disabled, then re-enable the page 1713 // visibility after the transition animation. 1714 if (!mFadeInAdjacentScreens) { 1715 for (int i = 0; i < getChildCount(); i++) { 1716 final CellLayout cl = (CellLayout) getChildAt(i); 1717 cl.setAlpha(1f); 1718 } 1719 } 1720 } 1721 1722 @Override 1723 public View getContent() { 1724 return this; 1725 } 1726 1727 /** 1728 * Draw the View v into the given Canvas. 1729 * 1730 * @param v the view to draw 1731 * @param destCanvas the canvas to draw on 1732 * @param padding the horizontal and vertical padding to use when drawing 1733 */ 1734 private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { 1735 final Rect clipRect = mTempRect; 1736 v.getDrawingRect(clipRect); 1737 1738 boolean textVisible = false; 1739 1740 destCanvas.save(); 1741 if (v instanceof TextView && pruneToDrawable) { 1742 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1743 clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); 1744 destCanvas.translate(padding / 2, padding / 2); 1745 d.draw(destCanvas); 1746 } else { 1747 if (v instanceof FolderIcon) { 1748 // For FolderIcons the text can bleed into the icon area, and so we need to 1749 // hide the text completely (which can't be achieved by clipping). 1750 if (((FolderIcon) v).getTextVisible()) { 1751 ((FolderIcon) v).setTextVisible(false); 1752 textVisible = true; 1753 } 1754 } else if (v instanceof BubbleTextView) { 1755 final BubbleTextView tv = (BubbleTextView) v; 1756 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1757 tv.getLayout().getLineTop(0); 1758 } else if (v instanceof TextView) { 1759 final TextView tv = (TextView) v; 1760 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1761 tv.getLayout().getLineTop(0); 1762 } 1763 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1764 destCanvas.clipRect(clipRect, Op.REPLACE); 1765 v.draw(destCanvas); 1766 1767 // Restore text visibility of FolderIcon if necessary 1768 if (textVisible) { 1769 ((FolderIcon) v).setTextVisible(true); 1770 } 1771 } 1772 destCanvas.restore(); 1773 } 1774 1775 /** 1776 * Returns a new bitmap to show when the given View is being dragged around. 1777 * Responsibility for the bitmap is transferred to the caller. 1778 */ 1779 public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1780 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1781 Bitmap b; 1782 1783 if (v instanceof TextView) { 1784 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1785 b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, 1786 d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); 1787 } else { 1788 b = Bitmap.createBitmap( 1789 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1790 } 1791 1792 canvas.setBitmap(b); 1793 drawDragView(v, canvas, padding, true); 1794 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 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 // Show the scrolling indicator when you pick up an item 1936 showScrollingIndicator(false); 1937 } 1938 1939 void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, int screen, 1940 int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { 1941 View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); 1942 1943 final int[] cellXY = new int[2]; 1944 target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1945 addInScreen(view, container, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1946 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, cellXY[0], 1947 cellXY[1]); 1948 } 1949 1950 public boolean transitionStateShouldAllowDrop() { 1951 return (!isSwitchingState() || mTransitionProgress > 0.5f); 1952 } 1953 1954 /** 1955 * {@inheritDoc} 1956 */ 1957 public boolean acceptDrop(DragObject d) { 1958 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1959 if (d.dragSource != this) { 1960 // Don't accept the drop if we're not over a screen at time of drop 1961 if (mDragTargetLayout == null) { 1962 return false; 1963 } 1964 if (!transitionStateShouldAllowDrop()) return false; 1965 1966 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 1967 d.dragView, mDragViewVisualCenter); 1968 1969 // We want the point to be mapped to the dragTarget. 1970 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 1971 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 1972 } else { 1973 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 1974 } 1975 1976 int spanX = 1; 1977 int spanY = 1; 1978 View ignoreView = null; 1979 if (mDragInfo != null) { 1980 final CellLayout.CellInfo dragCellInfo = mDragInfo; 1981 spanX = dragCellInfo.spanX; 1982 spanY = dragCellInfo.spanY; 1983 ignoreView = dragCellInfo.cell; 1984 } else { 1985 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 1986 spanX = dragInfo.spanX; 1987 spanY = dragInfo.spanY; 1988 } 1989 1990 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 1991 (int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell); 1992 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, true)) { 1993 return true; 1994 } 1995 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, 1996 mTargetCell)) { 1997 return true; 1998 } 1999 2000 // Don't accept the drop if there's no room for the item 2001 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 2002 // Don't show the message if we are dropping on the AllApps button and the hotseat 2003 // is full 2004 if (mTargetCell != null && mLauncher.isHotseatLayout(mDragTargetLayout)) { 2005 Hotseat hotseat = mLauncher.getHotseat(); 2006 if (Hotseat.isAllAppsButtonRank( 2007 hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { 2008 return false; 2009 } 2010 } 2011 2012 mLauncher.showOutOfSpaceMessage(); 2013 return false; 2014 } 2015 } 2016 return true; 2017 } 2018 2019 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, 2020 boolean considerTimeout) { 2021 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2022 2023 boolean hasntMoved = false; 2024 if (mDragInfo != null) { 2025 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2026 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2027 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2028 } 2029 2030 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2031 return false; 2032 } 2033 2034 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2035 boolean willBecomeShortcut = 2036 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2037 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2038 2039 return (aboveShortcut && willBecomeShortcut); 2040 } 2041 2042 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell) { 2043 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2044 if (dropOverView instanceof FolderIcon) { 2045 FolderIcon fi = (FolderIcon) dropOverView; 2046 if (fi.acceptDrop(dragInfo)) { 2047 return true; 2048 } 2049 } 2050 return false; 2051 } 2052 2053 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2054 int[] targetCell, boolean external, DragView dragView, Runnable postAnimationRunnable) { 2055 View v = target.getChildAt(targetCell[0], targetCell[1]); 2056 boolean hasntMoved = false; 2057 if (mDragInfo != null) { 2058 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2059 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2060 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2061 } 2062 2063 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2064 mCreateUserFolderOnDrop = false; 2065 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 2066 2067 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2068 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2069 2070 if (aboveShortcut && willBecomeShortcut) { 2071 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2072 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2073 // if the drag started here, we need to remove it from the workspace 2074 if (!external) { 2075 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2076 } 2077 2078 Rect folderLocation = new Rect(); 2079 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2080 target.removeView(v); 2081 2082 FolderIcon fi = 2083 mLauncher.addFolder(target, container, screen, targetCell[0], targetCell[1]); 2084 destInfo.cellX = -1; 2085 destInfo.cellY = -1; 2086 sourceInfo.cellX = -1; 2087 sourceInfo.cellY = -1; 2088 2089 // If the dragView is null, we can't animate 2090 boolean animate = dragView != null; 2091 if (animate) { 2092 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2093 postAnimationRunnable); 2094 } else { 2095 fi.addItem(destInfo); 2096 fi.addItem(sourceInfo); 2097 } 2098 return true; 2099 } 2100 return false; 2101 } 2102 2103 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2104 DragObject d, boolean external) { 2105 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2106 if (dropOverView instanceof FolderIcon) { 2107 FolderIcon fi = (FolderIcon) dropOverView; 2108 if (fi.acceptDrop(d.dragInfo)) { 2109 fi.onDrop(d); 2110 2111 // if the drag started here, we need to remove it from the workspace 2112 if (!external) { 2113 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2114 } 2115 return true; 2116 } 2117 } 2118 return false; 2119 } 2120 2121 public void onDrop(DragObject d) { 2122 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2123 mDragViewVisualCenter); 2124 2125 // We want the point to be mapped to the dragTarget. 2126 if (mDragTargetLayout != null) { 2127 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2128 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2129 } else { 2130 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2131 } 2132 } 2133 2134 CellLayout dropTargetLayout = mDragTargetLayout; 2135 2136 int snapScreen = -1; 2137 if (d.dragSource != this) { 2138 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2139 (int) mDragViewVisualCenter[1] }; 2140 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2141 } else if (mDragInfo != null) { 2142 final View cell = mDragInfo.cell; 2143 2144 if (dropTargetLayout != null) { 2145 // Move internally 2146 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2147 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2148 long container = hasMovedIntoHotseat ? 2149 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2150 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2151 int screen = (mTargetCell[0] < 0) ? 2152 mDragInfo.screen : indexOfChild(dropTargetLayout); 2153 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2154 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2155 // First we find the cell nearest to point at which the item is 2156 // dropped, without any consideration to whether there is an item there. 2157 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2158 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2159 // If the item being dropped is a shortcut and the nearest drop 2160 // cell also contains a shortcut, then create a folder with the two shortcuts. 2161 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2162 dropTargetLayout, mTargetCell, false, d.dragView, null)) { 2163 return; 2164 } 2165 2166 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, d, false)) { 2167 return; 2168 } 2169 2170 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2171 // we need to find the nearest cell location that is vacant 2172 mTargetCell = findNearestVacantArea((int) mDragViewVisualCenter[0], 2173 (int) mDragViewVisualCenter[1], mDragInfo.spanX, mDragInfo.spanY, cell, 2174 dropTargetLayout, mTargetCell); 2175 2176 if (mCurrentPage != screen && !hasMovedIntoHotseat) { 2177 snapScreen = screen; 2178 snapToPage(screen); 2179 } 2180 2181 if (mTargetCell[0] >= 0 && mTargetCell[1] >= 0) { 2182 if (hasMovedLayouts) { 2183 // Reparent the view 2184 getParentCellLayoutForView(cell).removeView(cell); 2185 addInScreen(cell, container, screen, mTargetCell[0], mTargetCell[1], 2186 mDragInfo.spanX, mDragInfo.spanY); 2187 } 2188 2189 // update the item's position after drop 2190 final ItemInfo info = (ItemInfo) cell.getTag(); 2191 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2192 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 2193 lp.cellX = mTargetCell[0]; 2194 lp.cellY = mTargetCell[1]; 2195 cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screen, 2196 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2197 2198 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2199 cell instanceof LauncherAppWidgetHostView) { 2200 final CellLayout cellLayout = dropTargetLayout; 2201 // We post this call so that the widget has a chance to be placed 2202 // in its final location 2203 2204 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2205 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2206 if (pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2207 final Runnable resizeRunnable = new Runnable() { 2208 public void run() { 2209 DragLayer dragLayer = mLauncher.getDragLayer(); 2210 dragLayer.addResizeFrame(info, hostView, cellLayout); 2211 } 2212 }; 2213 post(new Runnable() { 2214 public void run() { 2215 if (!isPageMoving()) { 2216 resizeRunnable.run(); 2217 } else { 2218 mDelayedResizeRunnable = resizeRunnable; 2219 } 2220 } 2221 }); 2222 } 2223 } 2224 2225 LauncherModel.moveItemInDatabase(mLauncher, info, container, screen, lp.cellX, 2226 lp.cellY); 2227 } 2228 } 2229 2230 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2231 2232 // Prepare it to be animated into its new position 2233 // This must be called after the view has been re-parented 2234 final Runnable disableHardwareLayersRunnable = new Runnable() { 2235 @Override 2236 public void run() { 2237 mAnimatingViewIntoPlace = false; 2238 updateChildrenLayersEnabled(); 2239 } 2240 }; 2241 mAnimatingViewIntoPlace = true; 2242 if (d.dragView.hasDrawn()) { 2243 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2244 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2245 disableHardwareLayersRunnable, this); 2246 } else { 2247 d.deferDragViewCleanupPostAnimation = false; 2248 cell.setVisibility(VISIBLE); 2249 } 2250 parent.onDropChild(cell); 2251 } 2252 } 2253 2254 public void setFinalScrollForPageChange(int screen) { 2255 if (screen >= 0) { 2256 mSavedScrollX = getScrollX(); 2257 CellLayout cl = (CellLayout) getChildAt(screen); 2258 mSavedTranslationX = cl.getTranslationX(); 2259 mSavedRotationY = cl.getRotationY(); 2260 final int newX = getChildOffset(screen) - getRelativeChildOffset(screen); 2261 setScrollX(newX); 2262 cl.setTranslationX(0f); 2263 cl.setRotationY(0f); 2264 } 2265 } 2266 2267 public void resetFinalScrollForPageChange(int screen) { 2268 if (screen >= 0) { 2269 CellLayout cl = (CellLayout) getChildAt(screen); 2270 setScrollX(mSavedScrollX); 2271 cl.setTranslationX(mSavedTranslationX); 2272 cl.setRotationY(mSavedRotationY); 2273 } 2274 } 2275 2276 public void getViewLocationRelativeToSelf(View v, int[] location) { 2277 getLocationInWindow(location); 2278 int x = location[0]; 2279 int y = location[1]; 2280 2281 v.getLocationInWindow(location); 2282 int vX = location[0]; 2283 int vY = location[1]; 2284 2285 location[0] = vX - x; 2286 location[1] = vY - y; 2287 } 2288 2289 public void onDragEnter(DragObject d) { 2290 mDragHasEnteredWorkspace = true; 2291 if (mDragTargetLayout != null) { 2292 mDragTargetLayout.setIsDragOverlapping(false); 2293 mDragTargetLayout.onDragExit(); 2294 } 2295 mDragTargetLayout = getCurrentDropLayout(); 2296 mDragTargetLayout.setIsDragOverlapping(true); 2297 mDragTargetLayout.onDragEnter(); 2298 2299 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2300 // don't need to show the outlines 2301 if (LauncherApplication.isScreenLarge()) { 2302 showOutlines(); 2303 } 2304 } 2305 2306 private void doDragExit(DragObject d) { 2307 // Clean up folders 2308 cleanupFolderCreation(d); 2309 2310 // Reset the scroll area and previous drag target 2311 onResetScrollArea(); 2312 2313 if (mDragTargetLayout != null) { 2314 mDragTargetLayout.setIsDragOverlapping(false); 2315 mDragTargetLayout.onDragExit(); 2316 } 2317 mLastDragOverView = null; 2318 mSpringLoadedDragController.cancel(); 2319 2320 if (!mIsPageMoving) { 2321 hideOutlines(); 2322 } 2323 } 2324 2325 public void onDragExit(DragObject d) { 2326 mDragHasEnteredWorkspace = false; 2327 doDragExit(d); 2328 } 2329 2330 public DropTarget getDropTargetDelegate(DragObject d) { 2331 return null; 2332 } 2333 2334 /** 2335 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 2336 * in the returned structure related to the widgets that match the drop (or a null list if it is 2337 * a shortcut drop). If the drop is not accepted then a null structure is returned. 2338 */ 2339 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 2340 final LauncherModel model = mLauncher.getModel(); 2341 final ClipDescription desc = event.getClipDescription(); 2342 final int mimeTypeCount = desc.getMimeTypeCount(); 2343 for (int i = 0; i < mimeTypeCount; ++i) { 2344 final String mimeType = desc.getMimeType(i); 2345 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 2346 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 2347 } else { 2348 final List<WidgetMimeTypeHandlerData> widgets = 2349 model.resolveWidgetsForMimeType(mContext, mimeType); 2350 if (widgets.size() > 0) { 2351 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 2352 } 2353 } 2354 } 2355 return null; 2356 } 2357 2358 /** 2359 * Global drag and drop handler 2360 */ 2361 @Override 2362 public boolean onDragEvent(DragEvent event) { 2363 final ClipDescription desc = event.getClipDescription(); 2364 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 2365 final int[] pos = new int[2]; 2366 layout.getLocationOnScreen(pos); 2367 // We need to offset the drag coordinates to layout coordinate space 2368 final int x = (int) event.getX() - pos[0]; 2369 final int y = (int) event.getY() - pos[1]; 2370 2371 switch (event.getAction()) { 2372 case DragEvent.ACTION_DRAG_STARTED: { 2373 // Validate this drag 2374 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2375 if (test != null) { 2376 boolean isShortcut = (test.second == null); 2377 if (isShortcut) { 2378 // Check if we have enough space on this screen to add a new shortcut 2379 if (!layout.findCellForSpan(pos, 1, 1)) { 2380 mLauncher.showOutOfSpaceMessage(); 2381 return false; 2382 } 2383 } 2384 } else { 2385 // Show error message if we couldn't accept any of the items 2386 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 2387 Toast.LENGTH_SHORT).show(); 2388 return false; 2389 } 2390 2391 // Create the drag outline 2392 // We need to add extra padding to the bitmap to make room for the glow effect 2393 final Canvas canvas = new Canvas(); 2394 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2395 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 2396 2397 // Show the current page outlines to indicate that we can accept this drop 2398 showOutlines(); 2399 layout.onDragEnter(); 2400 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1, null, null); 2401 2402 return true; 2403 } 2404 case DragEvent.ACTION_DRAG_LOCATION: 2405 // Visualize the drop location 2406 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1, null, null); 2407 return true; 2408 case DragEvent.ACTION_DROP: { 2409 // Try and add any shortcuts 2410 final LauncherModel model = mLauncher.getModel(); 2411 final ClipData data = event.getClipData(); 2412 2413 // We assume that the mime types are ordered in descending importance of 2414 // representation. So we enumerate the list of mime types and alert the 2415 // user if any widgets can handle the drop. Only the most preferred 2416 // representation will be handled. 2417 pos[0] = x; 2418 pos[1] = y; 2419 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2420 if (test != null) { 2421 final int index = test.first; 2422 final List<WidgetMimeTypeHandlerData> widgets = test.second; 2423 final boolean isShortcut = (widgets == null); 2424 final String mimeType = desc.getMimeType(index); 2425 if (isShortcut) { 2426 final Intent intent = data.getItemAt(index).getIntent(); 2427 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 2428 if (info != null) { 2429 onDropExternal(new int[] { x, y }, info, layout, false); 2430 } 2431 } else { 2432 if (widgets.size() == 1) { 2433 // If there is only one item, then go ahead and add and configure 2434 // that widget 2435 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 2436 final PendingAddWidgetInfo createInfo = 2437 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 2438 mLauncher.addAppWidgetFromDrop(createInfo, 2439 LauncherSettings.Favorites.CONTAINER_DESKTOP, mCurrentPage, null, pos); 2440 } else { 2441 // Show the widget picker dialog if there is more than one widget 2442 // that can handle this data type 2443 final InstallWidgetReceiver.WidgetListAdapter adapter = 2444 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 2445 data, widgets, layout, mCurrentPage, pos); 2446 final AlertDialog.Builder builder = 2447 new AlertDialog.Builder(mContext); 2448 builder.setAdapter(adapter, adapter); 2449 builder.setCancelable(true); 2450 builder.setTitle(mContext.getString( 2451 R.string.external_drop_widget_pick_title)); 2452 builder.setIcon(R.drawable.ic_no_applications); 2453 builder.show(); 2454 } 2455 } 2456 } 2457 return true; 2458 } 2459 case DragEvent.ACTION_DRAG_ENDED: 2460 // Hide the page outlines after the drop 2461 layout.onDragExit(); 2462 hideOutlines(); 2463 return true; 2464 } 2465 return super.onDragEvent(event); 2466 } 2467 2468 /* 2469 * 2470 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2471 * coordinate space. The argument xy is modified with the return result. 2472 * 2473 */ 2474 void mapPointFromSelfToChild(View v, float[] xy) { 2475 mapPointFromSelfToChild(v, xy, null); 2476 } 2477 2478 /* 2479 * 2480 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2481 * coordinate space. The argument xy is modified with the return result. 2482 * 2483 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2484 * computing it itself; we use this to avoid redundant matrix inversions in 2485 * findMatchingPageForDragOver 2486 * 2487 */ 2488 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2489 if (cachedInverseMatrix == null) { 2490 v.getMatrix().invert(mTempInverseMatrix); 2491 cachedInverseMatrix = mTempInverseMatrix; 2492 } 2493 int scrollX = mScrollX; 2494 if (mNextPage != INVALID_PAGE) { 2495 scrollX = mScroller.getFinalX(); 2496 } 2497 xy[0] = xy[0] + scrollX - v.getLeft(); 2498 xy[1] = xy[1] + mScrollY - v.getTop(); 2499 cachedInverseMatrix.mapPoints(xy); 2500 } 2501 2502 /* 2503 * Maps a point from the Workspace's coordinate system to another sibling view's. (Workspace 2504 * covers the full screen) 2505 */ 2506 void mapPointFromSelfToSibling(View v, float[] xy) { 2507 xy[0] = xy[0] - v.getLeft(); 2508 xy[1] = xy[1] - v.getTop(); 2509 } 2510 2511 /* 2512 * 2513 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2514 * the parent View's coordinate space. The argument xy is modified with the return result. 2515 * 2516 */ 2517 void mapPointFromChildToSelf(View v, float[] xy) { 2518 v.getMatrix().mapPoints(xy); 2519 int scrollX = mScrollX; 2520 if (mNextPage != INVALID_PAGE) { 2521 scrollX = mScroller.getFinalX(); 2522 } 2523 xy[0] -= (scrollX - v.getLeft()); 2524 xy[1] -= (mScrollY - v.getTop()); 2525 } 2526 2527 static private float squaredDistance(float[] point1, float[] point2) { 2528 float distanceX = point1[0] - point2[0]; 2529 float distanceY = point2[1] - point2[1]; 2530 return distanceX * distanceX + distanceY * distanceY; 2531 } 2532 2533 /* 2534 * 2535 * Returns true if the passed CellLayout cl overlaps with dragView 2536 * 2537 */ 2538 boolean overlaps(CellLayout cl, DragView dragView, 2539 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2540 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2541 final float[] draggedItemTopLeft = mTempDragCoordinates; 2542 draggedItemTopLeft[0] = dragViewX; 2543 draggedItemTopLeft[1] = dragViewY; 2544 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2545 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2546 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2547 2548 // Transform the dragged item's top left coordinates 2549 // to the CellLayout's local coordinates 2550 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2551 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2552 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2553 2554 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2555 // Transform the dragged item's bottom right coordinates 2556 // to the CellLayout's local coordinates 2557 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2558 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2559 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2560 2561 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2562 float overlap = (overlapRegionRight - overlapRegionLeft) * 2563 (overlapRegionBottom - overlapRegionTop); 2564 if (overlap > 0) { 2565 return true; 2566 } 2567 } 2568 } 2569 return false; 2570 } 2571 2572 /* 2573 * 2574 * This method returns the CellLayout that is currently being dragged to. In order to drag 2575 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2576 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2577 * 2578 * Return null if no CellLayout is currently being dragged over 2579 * 2580 */ 2581 private CellLayout findMatchingPageForDragOver( 2582 DragView dragView, float originX, float originY, boolean exact) { 2583 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2584 // with the item being dragged and then choose the one that's closest to the touch point 2585 final int screenCount = getChildCount(); 2586 CellLayout bestMatchingScreen = null; 2587 float smallestDistSoFar = Float.MAX_VALUE; 2588 2589 for (int i = 0; i < screenCount; i++) { 2590 CellLayout cl = (CellLayout) getChildAt(i); 2591 2592 final float[] touchXy = {originX, originY}; 2593 // Transform the touch coordinates to the CellLayout's local coordinates 2594 // If the touch point is within the bounds of the cell layout, we can return immediately 2595 cl.getMatrix().invert(mTempInverseMatrix); 2596 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2597 2598 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2599 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2600 return cl; 2601 } 2602 2603 if (!exact) { 2604 // Get the center of the cell layout in screen coordinates 2605 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2606 cellLayoutCenter[0] = cl.getWidth()/2; 2607 cellLayoutCenter[1] = cl.getHeight()/2; 2608 mapPointFromChildToSelf(cl, cellLayoutCenter); 2609 2610 touchXy[0] = originX; 2611 touchXy[1] = originY; 2612 2613 // Calculate the distance between the center of the CellLayout 2614 // and the touch point 2615 float dist = squaredDistance(touchXy, cellLayoutCenter); 2616 2617 if (dist < smallestDistSoFar) { 2618 smallestDistSoFar = dist; 2619 bestMatchingScreen = cl; 2620 } 2621 } 2622 } 2623 return bestMatchingScreen; 2624 } 2625 2626 // This is used to compute the visual center of the dragView. This point is then 2627 // used to visualize drop locations and determine where to drop an item. The idea is that 2628 // the visual center represents the user's interpretation of where the item is, and hence 2629 // is the appropriate point to use when determining drop location. 2630 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2631 DragView dragView, float[] recycle) { 2632 float res[]; 2633 if (recycle == null) { 2634 res = new float[2]; 2635 } else { 2636 res = recycle; 2637 } 2638 2639 // First off, the drag view has been shifted in a way that is not represented in the 2640 // x and y values or the x/yOffsets. Here we account for that shift. 2641 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2642 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2643 2644 // These represent the visual top and left of drag view if a dragRect was provided. 2645 // If a dragRect was not provided, then they correspond to the actual view left and 2646 // top, as the dragRect is in that case taken to be the entire dragView. 2647 // R.dimen.dragViewOffsetY. 2648 int left = x - xOffset; 2649 int top = y - yOffset; 2650 2651 // In order to find the visual center, we shift by half the dragRect 2652 res[0] = left + dragView.getDragRegion().width() / 2; 2653 res[1] = top + dragView.getDragRegion().height() / 2; 2654 2655 return res; 2656 } 2657 2658 private boolean isDragWidget(DragObject d) { 2659 return (d.dragInfo instanceof LauncherAppWidgetInfo || 2660 d.dragInfo instanceof PendingAddWidgetInfo); 2661 } 2662 private boolean isExternalDragWidget(DragObject d) { 2663 return d.dragSource != this && isDragWidget(d); 2664 } 2665 2666 public void onDragOver(DragObject d) { 2667 // Skip drag over events while we are dragging over side pages 2668 if (mInScrollArea) return; 2669 if (mIsSwitchingState) return; 2670 2671 Rect r = new Rect(); 2672 CellLayout layout = null; 2673 ItemInfo item = (ItemInfo) d.dragInfo; 2674 2675 // Ensure that we have proper spans for the item that we are dropping 2676 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2677 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2678 d.dragView, mDragViewVisualCenter); 2679 2680 // Identify whether we have dragged over a side page 2681 if (isSmall()) { 2682 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 2683 mLauncher.getHotseat().getHitRect(r); 2684 if (r.contains(d.x, d.y)) { 2685 layout = mLauncher.getHotseat().getLayout(); 2686 } 2687 } 2688 if (layout == null) { 2689 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false); 2690 } 2691 if (layout != mDragTargetLayout) { 2692 // Cancel all intermediate folder states 2693 cleanupFolderCreation(d); 2694 2695 if (mDragTargetLayout != null) { 2696 mDragTargetLayout.setIsDragOverlapping(false); 2697 mDragTargetLayout.onDragExit(); 2698 } 2699 mDragTargetLayout = layout; 2700 if (mDragTargetLayout != null) { 2701 mDragTargetLayout.setIsDragOverlapping(true); 2702 mDragTargetLayout.onDragEnter(); 2703 } else { 2704 mLastDragOverView = null; 2705 } 2706 2707 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 2708 if (isInSpringLoadedMode) { 2709 if (mLauncher.isHotseatLayout(layout)) { 2710 mSpringLoadedDragController.cancel(); 2711 } else { 2712 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2713 } 2714 } 2715 } 2716 } else { 2717 // Test to see if we are over the hotseat otherwise just use the current page 2718 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 2719 mLauncher.getHotseat().getHitRect(r); 2720 if (r.contains(d.x, d.y)) { 2721 layout = mLauncher.getHotseat().getLayout(); 2722 } 2723 } 2724 if (layout == null) { 2725 layout = getCurrentDropLayout(); 2726 } 2727 if (layout != mDragTargetLayout) { 2728 if (mDragTargetLayout != null) { 2729 mDragTargetLayout.setIsDragOverlapping(false); 2730 mDragTargetLayout.onDragExit(); 2731 } 2732 mDragTargetLayout = layout; 2733 mDragTargetLayout.setIsDragOverlapping(true); 2734 mDragTargetLayout.onDragEnter(); 2735 } 2736 } 2737 2738 // Handle the drag over 2739 if (mDragTargetLayout != null) { 2740 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2741 2742 // We want the point to be mapped to the dragTarget. 2743 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2744 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2745 } else { 2746 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2747 } 2748 ItemInfo info = (ItemInfo) d.dragInfo; 2749 2750 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2751 (int) mDragViewVisualCenter[1], 1, 1, mDragTargetLayout, mTargetCell); 2752 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2753 mTargetCell[1]); 2754 2755 boolean userFolderPending = willCreateUserFolder(info, mDragTargetLayout, 2756 mTargetCell, false); 2757 boolean isOverFolder = dragOverView instanceof FolderIcon; 2758 if (dragOverView != mLastDragOverView) { 2759 cancelFolderCreation(); 2760 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2761 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2762 } 2763 } 2764 2765 if (userFolderPending && dragOverView != mLastDragOverView) { 2766 mFolderCreationAlarm.setOnAlarmListener(new 2767 FolderCreationAlarmListener(mDragTargetLayout, mTargetCell[0], mTargetCell[1])); 2768 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2769 } 2770 2771 if (dragOverView != mLastDragOverView && isOverFolder) { 2772 ((FolderIcon) dragOverView).onDragEnter(d.dragInfo); 2773 if (mDragTargetLayout != null) { 2774 mDragTargetLayout.clearDragOutlines(); 2775 } 2776 } 2777 mLastDragOverView = dragOverView; 2778 2779 if (!mCreateUserFolderOnDrop && !isOverFolder) { 2780 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2781 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2782 item.spanX, item.spanY, d.dragView.getDragVisualizeOffset(), 2783 d.dragView.getDragRegion()); 2784 } 2785 } 2786 } 2787 2788 private void cleanupFolderCreation(DragObject d) { 2789 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2790 mDragFolderRingAnimator.animateToNaturalState(); 2791 } 2792 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2793 if (d != null) { 2794 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2795 } 2796 } 2797 mFolderCreationAlarm.cancelAlarm(); 2798 } 2799 2800 private void cancelFolderCreation() { 2801 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2802 mDragFolderRingAnimator.animateToNaturalState(); 2803 } 2804 mCreateUserFolderOnDrop = false; 2805 mFolderCreationAlarm.cancelAlarm(); 2806 } 2807 2808 class FolderCreationAlarmListener implements OnAlarmListener { 2809 CellLayout layout; 2810 int cellX; 2811 int cellY; 2812 2813 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 2814 this.layout = layout; 2815 this.cellX = cellX; 2816 this.cellY = cellY; 2817 } 2818 2819 public void onAlarm(Alarm alarm) { 2820 if (mDragFolderRingAnimator == null) { 2821 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 2822 } 2823 mDragFolderRingAnimator.setCell(cellX, cellY); 2824 mDragFolderRingAnimator.setCellLayout(layout); 2825 mDragFolderRingAnimator.animateToAcceptState(); 2826 layout.showFolderAccept(mDragFolderRingAnimator); 2827 layout.clearDragOutlines(); 2828 mCreateUserFolderOnDrop = true; 2829 } 2830 } 2831 2832 @Override 2833 public void getHitRect(Rect outRect) { 2834 // We want the workspace to have the whole area of the display (it will find the correct 2835 // cell layout to drop to in the existing drag/drop logic. 2836 outRect.set(0, 0, mDisplayWidth, mDisplayHeight); 2837 } 2838 2839 /** 2840 * Add the item specified by dragInfo to the given layout. 2841 * @return true if successful 2842 */ 2843 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2844 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2845 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2846 return true; 2847 } 2848 mLauncher.showOutOfSpaceMessage(); 2849 return false; 2850 } 2851 2852 private void onDropExternal(int[] touchXY, Object dragInfo, 2853 CellLayout cellLayout, boolean insertAtFirst) { 2854 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 2855 } 2856 2857 /** 2858 * Drop an item that didn't originate on one of the workspace screens. 2859 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2860 * come from another app altogether. 2861 * 2862 * NOTE: This can also be called when we are outside of a drag event, when we want 2863 * to add an item to one of the workspace screens. 2864 */ 2865 private void onDropExternal(final int[] touchXY, final Object dragInfo, 2866 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 2867 final Runnable exitSpringLoadedRunnable = new Runnable() { 2868 @Override 2869 public void run() { 2870 mLauncher.exitSpringLoadedDragModeDelayed(true, false); 2871 } 2872 }; 2873 2874 ItemInfo info = (ItemInfo) dragInfo; 2875 int spanX = info.spanX; 2876 int spanY = info.spanY; 2877 if (mDragInfo != null) { 2878 spanX = mDragInfo.spanX; 2879 spanY = mDragInfo.spanY; 2880 } 2881 2882 final long container = mLauncher.isHotseatLayout(cellLayout) ? 2883 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2884 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2885 final int screen = indexOfChild(cellLayout); 2886 if (!mLauncher.isHotseatLayout(cellLayout) && screen != mCurrentPage 2887 && mState != State.SPRING_LOADED) { 2888 snapToPage(screen); 2889 } 2890 2891 if (info instanceof PendingAddItemInfo) { 2892 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 2893 2894 boolean findNearestVacantCell = true; 2895 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 2896 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 2897 cellLayout, mTargetCell); 2898 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, 2899 true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 2900 mDragTargetLayout, mTargetCell)) { 2901 findNearestVacantCell = false; 2902 } 2903 } 2904 if (findNearestVacantCell) { 2905 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], spanX, spanY, null, 2906 cellLayout, mTargetCell); 2907 } 2908 2909 Runnable onAnimationCompleteRunnable = new Runnable() { 2910 @Override 2911 public void run() { 2912 // When dragging and dropping from customization tray, we deal with creating 2913 // widgets/shortcuts/folders in a slightly different way 2914 switch (pendingInfo.itemType) { 2915 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 2916 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, 2917 container, screen, mTargetCell, null); 2918 break; 2919 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2920 mLauncher.processShortcutFromDrop(pendingInfo.componentName, 2921 container, screen, mTargetCell, null); 2922 break; 2923 default: 2924 throw new IllegalStateException("Unknown item type: " + 2925 pendingInfo.itemType); 2926 } 2927 cellLayout.onDragExit(); 2928 } 2929 }; 2930 2931 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 2932 // location and size on the home screen. 2933 RectF r = estimateItemPosition(cellLayout, pendingInfo, 2934 mTargetCell[0], mTargetCell[1], spanX, spanY); 2935 int loc[] = new int[2]; 2936 loc[0] = (int) r.left; 2937 loc[1] = (int) r.top; 2938 setFinalTransitionTransform(cellLayout); 2939 float cellLayoutScale = 2940 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(cellLayout, loc); 2941 resetTransitionTransform(cellLayout); 2942 2943 float dragViewScale = Math.min(r.width() / d.dragView.getMeasuredWidth(), 2944 r.height() / d.dragView.getMeasuredHeight()); 2945 // The animation will scale the dragView about its center, so we need to center about 2946 // the final location. 2947 loc[0] -= (d.dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 2948 loc[1] -= (d.dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 2949 2950 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, loc, 2951 dragViewScale * cellLayoutScale, onAnimationCompleteRunnable); 2952 } else { 2953 // This is for other drag/drop cases, like dragging from All Apps 2954 View view = null; 2955 2956 switch (info.itemType) { 2957 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 2958 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2959 if (info.container == NO_ID && info instanceof ApplicationInfo) { 2960 // Came from all apps -- make a copy 2961 info = new ShortcutInfo((ApplicationInfo) info); 2962 } 2963 view = mLauncher.createShortcut(R.layout.application, cellLayout, 2964 (ShortcutInfo) info); 2965 break; 2966 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 2967 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 2968 (FolderInfo) info, mIconCache); 2969 break; 2970 default: 2971 throw new IllegalStateException("Unknown item type: " + info.itemType); 2972 } 2973 2974 // First we find the cell nearest to point at which the item is 2975 // dropped, without any consideration to whether there is an item there. 2976 if (touchXY != null) { 2977 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 2978 cellLayout, mTargetCell); 2979 d.postAnimationRunnable = exitSpringLoadedRunnable; 2980 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, true, 2981 d.dragView, d.postAnimationRunnable)) { 2982 return; 2983 } 2984 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, d, true)) { 2985 return; 2986 } 2987 } 2988 2989 if (touchXY != null) { 2990 // when dragging and dropping, just find the closest free spot 2991 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], 1, 1, null, 2992 cellLayout, mTargetCell); 2993 } else { 2994 cellLayout.findCellForSpan(mTargetCell, 1, 1); 2995 } 2996 addInScreen(view, container, screen, mTargetCell[0], mTargetCell[1], info.spanX, 2997 info.spanY, insertAtFirst); 2998 cellLayout.onDropChild(view); 2999 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 3000 cellLayout.getChildrenLayout().measureChild(view); 3001 3002 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, 3003 lp.cellX, lp.cellY); 3004 3005 if (d.dragView != null) { 3006 // We wrap the animation call in the temporary set and reset of the current 3007 // cellLayout to its final transform -- this means we animate the drag view to 3008 // the correct final location. 3009 setFinalTransitionTransform(cellLayout); 3010 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 3011 exitSpringLoadedRunnable); 3012 resetTransitionTransform(cellLayout); 3013 } 3014 } 3015 } 3016 3017 public void setFinalTransitionTransform(CellLayout layout) { 3018 if (isSwitchingState()) { 3019 int index = indexOfChild(layout); 3020 mCurrentScaleX = layout.getScaleX(); 3021 mCurrentScaleY = layout.getScaleY(); 3022 mCurrentTranslationX = layout.getTranslationX(); 3023 mCurrentTranslationY = layout.getTranslationY(); 3024 mCurrentRotationY = layout.getRotationY(); 3025 layout.setScaleX(mNewScaleXs[index]); 3026 layout.setScaleY(mNewScaleYs[index]); 3027 layout.setTranslationX(mNewTranslationXs[index]); 3028 layout.setTranslationY(mNewTranslationYs[index]); 3029 layout.setRotationY(mNewRotationYs[index]); 3030 } 3031 } 3032 public void resetTransitionTransform(CellLayout layout) { 3033 if (isSwitchingState()) { 3034 mCurrentScaleX = layout.getScaleX(); 3035 mCurrentScaleY = layout.getScaleY(); 3036 mCurrentTranslationX = layout.getTranslationX(); 3037 mCurrentTranslationY = layout.getTranslationY(); 3038 mCurrentRotationY = layout.getRotationY(); 3039 layout.setScaleX(mCurrentScaleX); 3040 layout.setScaleY(mCurrentScaleY); 3041 layout.setTranslationX(mCurrentTranslationX); 3042 layout.setTranslationY(mCurrentTranslationY); 3043 layout.setRotationY(mCurrentRotationY); 3044 } 3045 } 3046 3047 /** 3048 * Return the current {@link CellLayout}, correctly picking the destination 3049 * screen while a scroll is in progress. 3050 */ 3051 public CellLayout getCurrentDropLayout() { 3052 return (CellLayout) getChildAt(mNextPage == INVALID_PAGE ? mCurrentPage : mNextPage); 3053 } 3054 3055 /** 3056 * Return the current CellInfo describing our current drag; this method exists 3057 * so that Launcher can sync this object with the correct info when the activity is created/ 3058 * destroyed 3059 * 3060 */ 3061 public CellLayout.CellInfo getDragInfo() { 3062 return mDragInfo; 3063 } 3064 3065 /** 3066 * Calculate the nearest cell where the given object would be dropped. 3067 * 3068 * pixelX and pixelY should be in the coordinate system of layout 3069 */ 3070 private int[] findNearestVacantArea(int pixelX, int pixelY, 3071 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 3072 return layout.findNearestVacantArea( 3073 pixelX, pixelY, spanX, spanY, ignoreView, recycle); 3074 } 3075 3076 /** 3077 * Calculate the nearest cell where the given object would be dropped. 3078 * 3079 * pixelX and pixelY should be in the coordinate system of layout 3080 */ 3081 private int[] findNearestArea(int pixelX, int pixelY, 3082 int spanX, int spanY, CellLayout layout, int[] recycle) { 3083 return layout.findNearestArea( 3084 pixelX, pixelY, spanX, spanY, recycle); 3085 } 3086 3087 void setup(DragController dragController) { 3088 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3089 mDragController = dragController; 3090 3091 // hardware layers on children are enabled on startup, but should be disabled until 3092 // needed 3093 updateChildrenLayersEnabled(); 3094 setWallpaperDimension(); 3095 } 3096 3097 /** 3098 * Called at the end of a drag which originated on the workspace. 3099 */ 3100 public void onDropCompleted(View target, DragObject d, boolean success) { 3101 if (success) { 3102 if (target != this) { 3103 if (mDragInfo != null) { 3104 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 3105 if (mDragInfo.cell instanceof DropTarget) { 3106 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 3107 } 3108 } 3109 } 3110 } else if (mDragInfo != null) { 3111 // NOTE: When 'success' is true, onDragExit is called by the DragController before 3112 // calling onDropCompleted(). We call it ourselves here, but maybe this should be 3113 // moved into DragController.cancelDrag(). 3114 doDragExit(null); 3115 CellLayout cellLayout; 3116 if (mLauncher.isHotseatLayout(target)) { 3117 cellLayout = mLauncher.getHotseat().getLayout(); 3118 } else { 3119 cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3120 } 3121 cellLayout.onDropChild(mDragInfo.cell); 3122 } 3123 if (d.cancelled && mDragInfo.cell != null) { 3124 mDragInfo.cell.setVisibility(VISIBLE); 3125 } 3126 mDragOutline = null; 3127 mDragInfo = null; 3128 3129 // Hide the scrolling indicator after you pick up an item 3130 hideScrollingIndicator(false); 3131 } 3132 3133 public boolean isDropEnabled() { 3134 return true; 3135 } 3136 3137 @Override 3138 protected void onRestoreInstanceState(Parcelable state) { 3139 super.onRestoreInstanceState(state); 3140 Launcher.setScreen(mCurrentPage); 3141 } 3142 3143 @Override 3144 public void scrollLeft() { 3145 if (!isSmall() && !mIsSwitchingState) { 3146 super.scrollLeft(); 3147 } 3148 Folder openFolder = getOpenFolder(); 3149 if (openFolder != null) { 3150 openFolder.completeDragExit(); 3151 } 3152 } 3153 3154 @Override 3155 public void scrollRight() { 3156 if (!isSmall() && !mIsSwitchingState) { 3157 super.scrollRight(); 3158 } 3159 Folder openFolder = getOpenFolder(); 3160 if (openFolder != null) { 3161 openFolder.completeDragExit(); 3162 } 3163 } 3164 3165 @Override 3166 public boolean onEnterScrollArea(int x, int y, int direction) { 3167 // Ignore the scroll area if we are dragging over the hot seat 3168 if (mLauncher.getHotseat() != null) { 3169 Rect r = new Rect(); 3170 mLauncher.getHotseat().getHitRect(r); 3171 if (r.contains(x, y)) { 3172 return false; 3173 } 3174 } 3175 3176 boolean result = false; 3177 if (!isSmall() && !mIsSwitchingState) { 3178 mInScrollArea = true; 3179 3180 final int page = (mNextPage != INVALID_PAGE ? mNextPage : mCurrentPage) + 3181 (direction == DragController.SCROLL_LEFT ? -1 : 1); 3182 cancelFolderCreation(); 3183 3184 if (0 <= page && page < getChildCount()) { 3185 CellLayout layout = (CellLayout) getChildAt(page); 3186 // Exit the current layout and mark the overlapping layout 3187 if (mDragTargetLayout != null) { 3188 mDragTargetLayout.setIsDragOverlapping(false); 3189 mDragTargetLayout.onDragExit(); 3190 } 3191 mDragTargetLayout = layout; 3192 mDragTargetLayout.setIsDragOverlapping(true); 3193 3194 // Workspace is responsible for drawing the edge glow on adjacent pages, 3195 // so we need to redraw the workspace when this may have changed. 3196 invalidate(); 3197 result = true; 3198 } 3199 } 3200 return result; 3201 } 3202 3203 @Override 3204 public boolean onExitScrollArea() { 3205 boolean result = false; 3206 if (mInScrollArea) { 3207 if (mDragTargetLayout != null) { 3208 mDragTargetLayout.setIsDragOverlapping(false); 3209 // Workspace is responsible for drawing the edge glow on adjacent pages, 3210 // so we need to redraw the workspace when this may have changed. 3211 invalidate(); 3212 } 3213 if (mDragTargetLayout != null && mDragHasEnteredWorkspace) { 3214 // Unmark the overlapping layout and re-enter the current layout 3215 mDragTargetLayout = getCurrentDropLayout(); 3216 mDragTargetLayout.onDragEnter(); 3217 } 3218 result = true; 3219 mInScrollArea = false; 3220 } 3221 return result; 3222 } 3223 3224 private void onResetScrollArea() { 3225 if (mDragTargetLayout != null) { 3226 // Unmark the overlapping layout 3227 mDragTargetLayout.setIsDragOverlapping(false); 3228 3229 // Workspace is responsible for drawing the edge glow on adjacent pages, 3230 // so we need to redraw the workspace when this may have changed. 3231 invalidate(); 3232 } 3233 mInScrollArea = false; 3234 } 3235 3236 /** 3237 * Returns a specific CellLayout 3238 */ 3239 CellLayout getParentCellLayoutForView(View v) { 3240 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3241 for (CellLayout layout : layouts) { 3242 if (layout.getChildrenLayout().indexOfChild(v) > -1) { 3243 return layout; 3244 } 3245 } 3246 return null; 3247 } 3248 3249 /** 3250 * Returns a list of all the CellLayouts in the workspace. 3251 */ 3252 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3253 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3254 int screenCount = getChildCount(); 3255 for (int screen = 0; screen < screenCount; screen++) { 3256 layouts.add(((CellLayout) getChildAt(screen))); 3257 } 3258 if (mLauncher.getHotseat() != null) { 3259 layouts.add(mLauncher.getHotseat().getLayout()); 3260 } 3261 return layouts; 3262 } 3263 3264 /** 3265 * We should only use this to search for specific children. Do not use this method to modify 3266 * CellLayoutChildren directly. 3267 */ 3268 ArrayList<CellLayoutChildren> getWorkspaceAndHotseatCellLayoutChildren() { 3269 ArrayList<CellLayoutChildren> childrenLayouts = new ArrayList<CellLayoutChildren>(); 3270 int screenCount = getChildCount(); 3271 for (int screen = 0; screen < screenCount; screen++) { 3272 childrenLayouts.add(((CellLayout) getChildAt(screen)).getChildrenLayout()); 3273 } 3274 if (mLauncher.getHotseat() != null) { 3275 childrenLayouts.add(mLauncher.getHotseat().getLayout().getChildrenLayout()); 3276 } 3277 return childrenLayouts; 3278 } 3279 3280 public Folder getFolderForTag(Object tag) { 3281 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3282 for (CellLayoutChildren layout: childrenLayouts) { 3283 int count = layout.getChildCount(); 3284 for (int i = 0; i < count; i++) { 3285 View child = layout.getChildAt(i); 3286 if (child instanceof Folder) { 3287 Folder f = (Folder) child; 3288 if (f.getInfo() == tag && f.getInfo().opened) { 3289 return f; 3290 } 3291 } 3292 } 3293 } 3294 return null; 3295 } 3296 3297 public View getViewForTag(Object tag) { 3298 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3299 for (CellLayoutChildren layout: childrenLayouts) { 3300 int count = layout.getChildCount(); 3301 for (int i = 0; i < count; i++) { 3302 View child = layout.getChildAt(i); 3303 if (child.getTag() == tag) { 3304 return child; 3305 } 3306 } 3307 } 3308 return null; 3309 } 3310 3311 void clearDropTargets() { 3312 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3313 for (CellLayoutChildren layout: childrenLayouts) { 3314 int childCount = layout.getChildCount(); 3315 for (int j = 0; j < childCount; j++) { 3316 View v = layout.getChildAt(j); 3317 if (v instanceof DropTarget) { 3318 mDragController.removeDropTarget((DropTarget) v); 3319 } 3320 } 3321 } 3322 } 3323 3324 void removeItems(final ArrayList<ApplicationInfo> apps) { 3325 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3326 3327 final HashSet<String> packageNames = new HashSet<String>(); 3328 final int appCount = apps.size(); 3329 for (int i = 0; i < appCount; i++) { 3330 packageNames.add(apps.get(i).componentName.getPackageName()); 3331 } 3332 3333 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3334 for (final CellLayout layoutParent: cellLayouts) { 3335 final ViewGroup layout = layoutParent.getChildrenLayout(); 3336 3337 // Avoid ANRs by treating each screen separately 3338 post(new Runnable() { 3339 public void run() { 3340 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3341 childrenToRemove.clear(); 3342 3343 int childCount = layout.getChildCount(); 3344 for (int j = 0; j < childCount; j++) { 3345 final View view = layout.getChildAt(j); 3346 Object tag = view.getTag(); 3347 3348 if (tag instanceof ShortcutInfo) { 3349 final ShortcutInfo info = (ShortcutInfo) tag; 3350 final Intent intent = info.intent; 3351 final ComponentName name = intent.getComponent(); 3352 3353 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3354 for (String packageName: packageNames) { 3355 if (packageName.equals(name.getPackageName())) { 3356 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3357 childrenToRemove.add(view); 3358 } 3359 } 3360 } 3361 } else if (tag instanceof FolderInfo) { 3362 final FolderInfo info = (FolderInfo) tag; 3363 final ArrayList<ShortcutInfo> contents = info.contents; 3364 final int contentsCount = contents.size(); 3365 final ArrayList<ShortcutInfo> appsToRemoveFromFolder = 3366 new ArrayList<ShortcutInfo>(); 3367 3368 for (int k = 0; k < contentsCount; k++) { 3369 final ShortcutInfo appInfo = contents.get(k); 3370 final Intent intent = appInfo.intent; 3371 final ComponentName name = intent.getComponent(); 3372 3373 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3374 for (String packageName: packageNames) { 3375 if (packageName.equals(name.getPackageName())) { 3376 appsToRemoveFromFolder.add(appInfo); 3377 } 3378 } 3379 } 3380 } 3381 for (ShortcutInfo item: appsToRemoveFromFolder) { 3382 info.remove(item); 3383 LauncherModel.deleteItemFromDatabase(mLauncher, item); 3384 } 3385 } else if (tag instanceof LauncherAppWidgetInfo) { 3386 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3387 final AppWidgetProviderInfo provider = 3388 widgets.getAppWidgetInfo(info.appWidgetId); 3389 if (provider != null) { 3390 for (String packageName: packageNames) { 3391 if (packageName.equals(provider.provider.getPackageName())) { 3392 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3393 childrenToRemove.add(view); 3394 } 3395 } 3396 } 3397 } 3398 } 3399 3400 childCount = childrenToRemove.size(); 3401 for (int j = 0; j < childCount; j++) { 3402 View child = childrenToRemove.get(j); 3403 // Note: We can not remove the view directly from CellLayoutChildren as this 3404 // does not re-mark the spaces as unoccupied. 3405 layoutParent.removeViewInLayout(child); 3406 if (child instanceof DropTarget) { 3407 mDragController.removeDropTarget((DropTarget)child); 3408 } 3409 } 3410 3411 if (childCount > 0) { 3412 layout.requestLayout(); 3413 layout.invalidate(); 3414 } 3415 } 3416 }); 3417 } 3418 } 3419 3420 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3421 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3422 for (CellLayoutChildren layout: childrenLayouts) { 3423 int childCount = layout.getChildCount(); 3424 for (int j = 0; j < childCount; j++) { 3425 final View view = layout.getChildAt(j); 3426 Object tag = view.getTag(); 3427 if (tag instanceof ShortcutInfo) { 3428 ShortcutInfo info = (ShortcutInfo)tag; 3429 // We need to check for ACTION_MAIN otherwise getComponent() might 3430 // return null for some shortcuts (for instance, for shortcuts to 3431 // web pages.) 3432 final Intent intent = info.intent; 3433 final ComponentName name = intent.getComponent(); 3434 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3435 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3436 final int appCount = apps.size(); 3437 for (int k = 0; k < appCount; k++) { 3438 ApplicationInfo app = apps.get(k); 3439 if (app.componentName.equals(name)) { 3440 info.setIcon(mIconCache.getIcon(info.intent)); 3441 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 3442 new FastBitmapDrawable(info.getIcon(mIconCache)), 3443 null, null); 3444 } 3445 } 3446 } 3447 } 3448 } 3449 } 3450 } 3451 3452 void moveToDefaultScreen(boolean animate) { 3453 if (!isSmall()) { 3454 if (animate) { 3455 snapToPage(mDefaultPage); 3456 } else { 3457 setCurrentPage(mDefaultPage); 3458 } 3459 } 3460 getChildAt(mDefaultPage).requestFocus(); 3461 } 3462 3463 @Override 3464 public void syncPages() { 3465 } 3466 3467 @Override 3468 public void syncPageItems(int page, boolean immediate) { 3469 } 3470 3471 @Override 3472 protected String getCurrentPageDescription() { 3473 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 3474 return String.format(mContext.getString(R.string.workspace_scroll_format), 3475 page + 1, getChildCount()); 3476 } 3477 3478 public void getLocationInDragLayer(int[] loc) { 3479 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 3480 } 3481 3482 void setFadeForOverScroll(float fade) { 3483 if (!isScrollingIndicatorEnabled()) return; 3484 3485 mOverscrollFade = fade; 3486 float reducedFade = 0.5f + 0.5f * (1 - fade); 3487 final ViewGroup parent = (ViewGroup) getParent(); 3488 final ImageView qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3489 final ImageView dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3490 final View scrollIndicator = getScrollingIndicator(); 3491 3492 cancelScrollingIndicatorAnimations(); 3493 if (qsbDivider != null) qsbDivider.setAlpha(reducedFade); 3494 if (dockDivider != null) dockDivider.setAlpha(reducedFade); 3495 scrollIndicator.setAlpha(1 - fade); 3496 } 3497} 3498