Workspace.java revision e4e506660ba93ae2c4f1cb0b41378cf148c85e2b
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.launcher2; 18 19import android.animation.Animator; 20import android.animation.Animator.AnimatorListener; 21import android.animation.AnimatorListenerAdapter; 22import android.animation.AnimatorSet; 23import android.animation.ObjectAnimator; 24import android.animation.TimeInterpolator; 25import android.animation.ValueAnimator; 26import android.animation.ValueAnimator.AnimatorUpdateListener; 27import android.app.AlertDialog; 28import android.app.WallpaperManager; 29import android.appwidget.AppWidgetHostView; 30import android.appwidget.AppWidgetManager; 31import android.appwidget.AppWidgetProviderInfo; 32import android.content.ClipData; 33import android.content.ClipDescription; 34import android.content.ComponentName; 35import android.content.Context; 36import android.content.Intent; 37import android.content.res.Resources; 38import android.content.res.TypedArray; 39import android.graphics.Bitmap; 40import android.graphics.Camera; 41import android.graphics.Canvas; 42import android.graphics.Matrix; 43import android.graphics.Paint; 44import android.graphics.Point; 45import android.graphics.PorterDuff; 46import android.graphics.Rect; 47import android.graphics.RectF; 48import android.graphics.Region.Op; 49import android.graphics.drawable.Drawable; 50import android.os.IBinder; 51import android.os.Parcelable; 52import android.util.AttributeSet; 53import android.util.DisplayMetrics; 54import android.util.Log; 55import android.util.Pair; 56import android.view.Display; 57import android.view.DragEvent; 58import android.view.MotionEvent; 59import android.view.View; 60import android.view.ViewGroup; 61import android.view.animation.DecelerateInterpolator; 62import android.widget.ImageView; 63import android.widget.TextView; 64import android.widget.Toast; 65 66import com.android.launcher.R; 67import com.android.launcher2.FolderIcon.FolderRingAnimator; 68import com.android.launcher2.InstallWidgetReceiver.WidgetMimeTypeHandlerData; 69 70import java.util.ArrayList; 71import java.util.HashSet; 72import java.util.List; 73 74/** 75 * The workspace is a wide area with a wallpaper and a finite number of pages. 76 * Each page contains a number of icons, folders or widgets the user can 77 * interact with. A workspace is meant to be used with a fixed width only. 78 */ 79public class Workspace extends SmoothPagedView 80 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 81 DragController.DragListener, LauncherTransitionable { 82 @SuppressWarnings({"UnusedDeclaration"}) 83 private static final String TAG = "Launcher.Workspace"; 84 85 // Y rotation to apply to the workspace screens 86 private static final float WORKSPACE_ROTATION = 12.5f; 87 private static final float WORKSPACE_OVERSCROLL_ROTATION = 24f; 88 private static float CAMERA_DISTANCE = 6500; 89 90 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 91 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 92 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 93 94 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 95 private static final int ADJACENT_SCREEN_DROP_DURATION = 300; 96 private static final int FLING_THRESHOLD_VELOCITY = 500; 97 98 // These animators are used to fade the children's outlines 99 private ObjectAnimator mChildrenOutlineFadeInAnimation; 100 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 101 private float mChildrenOutlineAlpha = 0; 102 103 // These properties refer to the background protection gradient used for AllApps and Customize 104 private ValueAnimator mBackgroundFadeInAnimation; 105 private ValueAnimator mBackgroundFadeOutAnimation; 106 private Drawable mBackground; 107 boolean mDrawBackground = true; 108 private float mBackgroundAlpha = 0; 109 private float mOverScrollMaxBackgroundAlpha = 0.0f; 110 private int mOverScrollPageIndex = -1; 111 112 private float mWallpaperScrollRatio = 1.0f; 113 114 private final WallpaperManager mWallpaperManager; 115 private IBinder mWindowToken; 116 private static final float WALLPAPER_SCREENS_SPAN = 2f; 117 118 private int mDefaultPage; 119 120 /** 121 * CellInfo for the cell that is currently being dragged 122 */ 123 private CellLayout.CellInfo mDragInfo; 124 125 /** 126 * Target drop area calculated during last acceptDrop call. 127 */ 128 private int[] mTargetCell = new int[2]; 129 130 /** 131 * The CellLayout that is currently being dragged over 132 */ 133 private CellLayout mDragTargetLayout = null; 134 private boolean mDragHasEnteredWorkspace = false; 135 136 private Launcher mLauncher; 137 private IconCache mIconCache; 138 private DragController mDragController; 139 140 // These are temporary variables to prevent having to allocate a new object just to 141 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 142 private int[] mTempCell = new int[2]; 143 private int[] mTempEstimate = new int[2]; 144 private float[] mDragViewVisualCenter = new float[2]; 145 private float[] mTempDragCoordinates = new float[2]; 146 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 147 private float[] mTempDragBottomRightCoordinates = new float[2]; 148 private Matrix mTempInverseMatrix = new Matrix(); 149 150 private SpringLoadedDragController mSpringLoadedDragController; 151 private float mSpringLoadedShrinkFactor; 152 153 private static final int DEFAULT_CELL_COUNT_X = 4; 154 private static final int DEFAULT_CELL_COUNT_Y = 4; 155 156 // State variable that indicates whether the pages are small (ie when you're 157 // in all apps or customize mode) 158 159 enum State { NORMAL, SPRING_LOADED, SMALL }; 160 private State mState = State.NORMAL; 161 private boolean mIsSwitchingState = false; 162 163 boolean mAnimatingViewIntoPlace = false; 164 boolean mIsDragOccuring = false; 165 boolean mChildrenLayersEnabled = true; 166 167 /** Is the user is dragging an item near the edge of a page? */ 168 private boolean mInScrollArea = false; 169 170 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 171 private Bitmap mDragOutline = null; 172 private final Rect mTempRect = new Rect(); 173 private final int[] mTempXY = new int[2]; 174 private int mDragViewMultiplyColor; 175 private float mOverscrollFade = 0; 176 177 // Paint used to draw external drop outline 178 private final Paint mExternalDragOutlinePaint = new Paint(); 179 180 // Camera and Matrix used to determine the final position of a neighboring CellLayout 181 private final Matrix mMatrix = new Matrix(); 182 private final Camera mCamera = new Camera(); 183 private final float mTempFloat2[] = new float[2]; 184 185 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 186 int mWallpaperWidth; 187 int mWallpaperHeight; 188 WallpaperOffsetInterpolator mWallpaperOffset; 189 boolean mUpdateWallpaperOffsetImmediately = false; 190 private Runnable mDelayedResizeRunnable; 191 private int mDisplayWidth; 192 private int mDisplayHeight; 193 private int mWallpaperTravelWidth; 194 195 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 196 private static final int FOLDER_CREATION_TIMEOUT = 250; 197 private final Alarm mFolderCreationAlarm = new Alarm(); 198 private FolderRingAnimator mDragFolderRingAnimator = null; 199 private View mLastDragOverView = null; 200 private boolean mCreateUserFolderOnDrop = false; 201 202 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 203 private float mXDown; 204 private float mYDown; 205 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 206 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 207 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 208 209 // These variables are used for storing the initial and final values during workspace animations 210 private int mSavedScrollX; 211 private float mSavedRotationY; 212 private float mSavedTranslationX; 213 private float mCurrentScaleX; 214 private float mCurrentScaleY; 215 private float mCurrentRotationY; 216 private float mCurrentTranslationX; 217 private float mCurrentTranslationY; 218 private float[] mOldTranslationXs; 219 private float[] mOldTranslationYs; 220 private float[] mOldScaleXs; 221 private float[] mOldScaleYs; 222 private float[] mOldBackgroundAlphas; 223 private float[] mOldBackgroundAlphaMultipliers; 224 private float[] mOldAlphas; 225 private float[] mOldRotationYs; 226 private float[] mNewTranslationXs; 227 private float[] mNewTranslationYs; 228 private float[] mNewScaleXs; 229 private float[] mNewScaleYs; 230 private float[] mNewBackgroundAlphas; 231 private float[] mNewBackgroundAlphaMultipliers; 232 private float[] mNewAlphas; 233 private float[] mNewRotationYs; 234 private float mTransitionProgress = 1f; 235 236 /** 237 * Used to inflate the Workspace from XML. 238 * 239 * @param context The application's context. 240 * @param attrs The attributes set containing the Workspace's customization values. 241 */ 242 public Workspace(Context context, AttributeSet attrs) { 243 this(context, attrs, 0); 244 } 245 246 /** 247 * Used to inflate the Workspace from XML. 248 * 249 * @param context The application's context. 250 * @param attrs The attributes set containing the Workspace's customization values. 251 * @param defStyle Unused. 252 */ 253 public Workspace(Context context, AttributeSet attrs, int defStyle) { 254 super(context, attrs, defStyle); 255 mContentIsRefreshable = false; 256 257 // With workspace, data is available straight from the get-go 258 setDataIsReady(); 259 260 mFadeInAdjacentScreens = 261 getResources().getBoolean(R.bool.config_workspaceFadeAdjacentScreens); 262 mWallpaperManager = WallpaperManager.getInstance(context); 263 264 int cellCountX = DEFAULT_CELL_COUNT_X; 265 int cellCountY = DEFAULT_CELL_COUNT_Y; 266 267 TypedArray a = context.obtainStyledAttributes(attrs, 268 R.styleable.Workspace, defStyle, 0); 269 270 final Resources res = context.getResources(); 271 if (LauncherApplication.isScreenLarge()) { 272 // Determine number of rows/columns dynamically 273 // TODO: This code currently fails on tablets with an aspect ratio < 1.3. 274 // Around that ratio we should make cells the same size in portrait and 275 // landscape 276 TypedArray actionBarSizeTypedArray = 277 context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize }); 278 final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); 279 final float systemBarHeight = res.getDimension(R.dimen.status_bar_height); 280 final float smallestScreenDim = res.getConfiguration().smallestScreenWidthDp; 281 282 cellCountX = 1; 283 while (CellLayout.widthInPortrait(res, cellCountX + 1) <= smallestScreenDim) { 284 cellCountX++; 285 } 286 287 cellCountY = 1; 288 while (actionBarHeight + CellLayout.heightInLandscape(res, cellCountY + 1) 289 <= smallestScreenDim - systemBarHeight) { 290 cellCountY++; 291 } 292 } 293 294 mSpringLoadedShrinkFactor = 295 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 296 mDragViewMultiplyColor = res.getColor(R.color.drag_view_multiply_color); 297 298 // if the value is manually specified, use that instead 299 cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX); 300 cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY); 301 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 302 a.recycle(); 303 304 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 305 setHapticFeedbackEnabled(false); 306 307 mLauncher = (Launcher) context; 308 initWorkspace(); 309 310 // Disable multitouch across the workspace/all apps/customize tray 311 setMotionEventSplittingEnabled(true); 312 } 313 314 // estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each 315 // dimension if unsuccessful 316 public int[] estimateItemSize(int hSpan, int vSpan, 317 PendingAddItemInfo pendingItemInfo, boolean springLoaded) { 318 int[] size = new int[2]; 319 if (getChildCount() > 0) { 320 CellLayout cl = (CellLayout) mLauncher.getWorkspace().getChildAt(0); 321 RectF r = estimateItemPosition(cl, pendingItemInfo, 0, 0, hSpan, vSpan); 322 size[0] = (int) r.width(); 323 size[1] = (int) r.height(); 324 if (springLoaded) { 325 size[0] *= mSpringLoadedShrinkFactor; 326 size[1] *= mSpringLoadedShrinkFactor; 327 } 328 return size; 329 } else { 330 size[0] = Integer.MAX_VALUE; 331 size[1] = Integer.MAX_VALUE; 332 return size; 333 } 334 } 335 public RectF estimateItemPosition(CellLayout cl, ItemInfo pendingInfo, 336 int hCell, int vCell, int hSpan, int vSpan) { 337 RectF r = new RectF(); 338 cl.cellToRect(hCell, vCell, hSpan, vSpan, r); 339 if (pendingInfo instanceof PendingAddWidgetInfo) { 340 PendingAddWidgetInfo widgetInfo = (PendingAddWidgetInfo) pendingInfo; 341 Rect p = AppWidgetHostView.getDefaultPaddingForWidget(mContext, 342 widgetInfo.componentName, null); 343 r.top += p.top; 344 r.left += p.left; 345 r.right -= p.right; 346 r.bottom -= p.bottom; 347 } 348 return r; 349 } 350 351 public void buildPageHardwareLayers() { 352 if (getWindowToken() != null) { 353 final int childCount = getChildCount(); 354 for (int i = 0; i < childCount; i++) { 355 CellLayout cl = (CellLayout) getChildAt(i); 356 cl.buildChildrenLayer(); 357 } 358 } 359 } 360 361 public void onDragStart(DragSource source, Object info, int dragAction) { 362 mIsDragOccuring = true; 363 updateChildrenLayersEnabled(); 364 mLauncher.lockScreenOrientationOnLargeUI(); 365 } 366 367 public void onDragEnd() { 368 mIsDragOccuring = false; 369 updateChildrenLayersEnabled(); 370 mLauncher.unlockScreenOrientationOnLargeUI(); 371 } 372 373 /** 374 * Initializes various states for this workspace. 375 */ 376 protected void initWorkspace() { 377 Context context = getContext(); 378 mCurrentPage = mDefaultPage; 379 Launcher.setScreen(mCurrentPage); 380 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 381 mIconCache = app.getIconCache(); 382 mExternalDragOutlinePaint.setAntiAlias(true); 383 setWillNotDraw(false); 384 setChildrenDrawnWithCacheEnabled(true); 385 386 try { 387 final Resources res = getResources(); 388 mBackground = res.getDrawable(R.drawable.apps_customize_bg); 389 } catch (Resources.NotFoundException e) { 390 // In this case, we will skip drawing background protection 391 } 392 393 mWallpaperOffset = new WallpaperOffsetInterpolator(); 394 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 395 mDisplayWidth = display.getWidth(); 396 mDisplayHeight = display.getHeight(); 397 mWallpaperTravelWidth = (int) (mDisplayWidth * 398 wallpaperTravelToScreenWidthRatio(mDisplayWidth, mDisplayHeight)); 399 400 mFlingThresholdVelocity = (int) (FLING_THRESHOLD_VELOCITY * mDensity); 401 402 } 403 404 @Override 405 protected int getScrollMode() { 406 return SmoothPagedView.X_LARGE_MODE; 407 } 408 409 @Override 410 protected void onViewAdded(View child) { 411 super.onViewAdded(child); 412 if (!(child instanceof CellLayout)) { 413 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 414 } 415 CellLayout cl = ((CellLayout) child); 416 cl.setOnInterceptTouchListener(this); 417 cl.setClickable(true); 418 cl.enableHardwareLayers(); 419 } 420 421 /** 422 * @return The open folder on the current screen, or null if there is none 423 */ 424 Folder getOpenFolder() { 425 DragLayer dragLayer = mLauncher.getDragLayer(); 426 int count = dragLayer.getChildCount(); 427 for (int i = 0; i < count; i++) { 428 View child = dragLayer.getChildAt(i); 429 if (child instanceof Folder) { 430 Folder folder = (Folder) child; 431 if (folder.getInfo().opened) 432 return folder; 433 } 434 } 435 return null; 436 } 437 438 boolean isTouchActive() { 439 return mTouchState != TOUCH_STATE_REST; 440 } 441 442 /** 443 * Adds the specified child in the specified screen. The position and dimension of 444 * the child are defined by x, y, spanX and spanY. 445 * 446 * @param child The child to add in one of the workspace's screens. 447 * @param screen The screen in which to add the child. 448 * @param x The X position of the child in the screen's grid. 449 * @param y The Y position of the child in the screen's grid. 450 * @param spanX The number of cells spanned horizontally by the child. 451 * @param spanY The number of cells spanned vertically by the child. 452 */ 453 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY) { 454 addInScreen(child, container, screen, x, y, spanX, spanY, false); 455 } 456 457 /** 458 * Adds the specified child in the specified screen. The position and dimension of 459 * the child are defined by x, y, spanX and spanY. 460 * 461 * @param child The child to add in one of the workspace's screens. 462 * @param screen The screen in which to add the child. 463 * @param x The X position of the child in the screen's grid. 464 * @param y The Y position of the child in the screen's grid. 465 * @param spanX The number of cells spanned horizontally by the child. 466 * @param spanY The number of cells spanned vertically by the child. 467 * @param insert When true, the child is inserted at the beginning of the children list. 468 */ 469 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY, 470 boolean insert) { 471 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 472 if (screen < 0 || screen >= getChildCount()) { 473 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 474 + " (was " + screen + "); skipping child"); 475 return; 476 } 477 } 478 479 final CellLayout layout; 480 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 481 layout = mLauncher.getHotseat().getLayout(); 482 child.setOnKeyListener(null); 483 484 // Hide folder title in the hotseat 485 if (child instanceof FolderIcon) { 486 ((FolderIcon) child).setTextVisible(false); 487 } 488 489 if (screen < 0) { 490 screen = mLauncher.getHotseat().getOrderInHotseat(x, y); 491 } else { 492 // Note: We do this to ensure that the hotseat is always laid out in the orientation 493 // of the hotseat in order regardless of which orientation they were added 494 x = mLauncher.getHotseat().getCellXFromOrder(screen); 495 y = mLauncher.getHotseat().getCellYFromOrder(screen); 496 } 497 } else { 498 // Show folder title if not in the hotseat 499 if (child instanceof FolderIcon) { 500 ((FolderIcon) child).setTextVisible(true); 501 } 502 503 layout = (CellLayout) getChildAt(screen); 504 child.setOnKeyListener(new IconKeyEventListener()); 505 } 506 507 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 508 if (lp == null) { 509 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 510 } else { 511 lp.cellX = x; 512 lp.cellY = y; 513 lp.cellHSpan = spanX; 514 lp.cellVSpan = spanY; 515 } 516 517 if (spanX < 0 && spanY < 0) { 518 lp.isLockedToGrid = false; 519 } 520 521 // Get the canonical child id to uniquely represent this view in this screen 522 int childId = LauncherModel.getCellLayoutChildId(container, screen, x, y, spanX, spanY); 523 boolean markCellsAsOccupied = !(child instanceof Folder); 524 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 525 // TODO: This branch occurs when the workspace is adding views 526 // outside of the defined grid 527 // maybe we should be deleting these items from the LauncherModel? 528 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 529 } 530 531 if (!(child instanceof Folder)) { 532 child.setHapticFeedbackEnabled(false); 533 child.setOnLongClickListener(mLongClickListener); 534 } 535 if (child instanceof DropTarget) { 536 mDragController.addDropTarget((DropTarget) child); 537 } 538 } 539 540 /** 541 * Check if the point (x, y) hits a given page. 542 */ 543 private boolean hitsPage(int index, float x, float y) { 544 final View page = getChildAt(index); 545 if (page != null) { 546 float[] localXY = { x, y }; 547 mapPointFromSelfToChild(page, localXY); 548 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 549 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 550 } 551 return false; 552 } 553 554 @Override 555 protected boolean hitsPreviousPage(float x, float y) { 556 // mNextPage is set to INVALID_PAGE whenever we are stationary. 557 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 558 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 559 560 // Only allow tap to next page on large devices, where there's significant margin outside 561 // the active workspace 562 return LauncherApplication.isScreenLarge() && hitsPage(current - 1, x, y); 563 } 564 565 @Override 566 protected boolean hitsNextPage(float x, float y) { 567 // mNextPage is set to INVALID_PAGE whenever we are stationary. 568 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 569 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 570 571 // Only allow tap to next page on large devices, where there's significant margin outside 572 // the active workspace 573 return LauncherApplication.isScreenLarge() && hitsPage(current + 1, x, y); 574 } 575 576 /** 577 * Called directly from a CellLayout (not by the framework), after we've been added as a 578 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 579 * that it should intercept touch events, which is not something that is normally supported. 580 */ 581 @Override 582 public boolean onTouch(View v, MotionEvent event) { 583 return (isSmall() || mIsSwitchingState); 584 } 585 586 public boolean isSwitchingState() { 587 return mIsSwitchingState; 588 } 589 590 protected void onWindowVisibilityChanged (int visibility) { 591 mLauncher.onWindowVisibilityChanged(visibility); 592 } 593 594 @Override 595 public boolean dispatchUnhandledMove(View focused, int direction) { 596 if (isSmall() || mIsSwitchingState) { 597 // when the home screens are shrunken, shouldn't allow side-scrolling 598 return false; 599 } 600 return super.dispatchUnhandledMove(focused, direction); 601 } 602 603 @Override 604 public boolean onInterceptTouchEvent(MotionEvent ev) { 605 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 606 case MotionEvent.ACTION_DOWN: 607 mXDown = ev.getX(); 608 mYDown = ev.getY(); 609 break; 610 case MotionEvent.ACTION_POINTER_UP: 611 case MotionEvent.ACTION_UP: 612 if (mTouchState == TOUCH_STATE_REST) { 613 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 614 if (!currentPage.lastDownOnOccupiedCell()) { 615 onWallpaperTap(ev); 616 } 617 } 618 } 619 return super.onInterceptTouchEvent(ev); 620 } 621 622 @Override 623 protected void determineScrollingStart(MotionEvent ev) { 624 if (!isSmall() && !mIsSwitchingState) { 625 float deltaX = Math.abs(ev.getX() - mXDown); 626 float deltaY = Math.abs(ev.getY() - mYDown); 627 628 if (Float.compare(deltaX, 0f) == 0) return; 629 630 float slope = deltaY / deltaX; 631 float theta = (float) Math.atan(slope); 632 633 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 634 cancelCurrentPageLongPress(); 635 } 636 637 if (theta > MAX_SWIPE_ANGLE) { 638 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 639 return; 640 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 641 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 642 // increase the touch slop to make it harder to begin scrolling the workspace. This 643 // results in vertically scrolling widgets to more easily. The higher the angle, the 644 // more we increase touch slop. 645 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 646 float extraRatio = (float) 647 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 648 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 649 } else { 650 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 651 super.determineScrollingStart(ev); 652 } 653 } 654 } 655 656 @Override 657 protected boolean isScrollingIndicatorEnabled() { 658 return mState != State.SPRING_LOADED; 659 } 660 661 protected void onPageBeginMoving() { 662 super.onPageBeginMoving(); 663 664 if (isHardwareAccelerated()) { 665 updateChildrenLayersEnabled(); 666 } else { 667 if (mNextPage != INVALID_PAGE) { 668 // we're snapping to a particular screen 669 enableChildrenCache(mCurrentPage, mNextPage); 670 } else { 671 // this is when user is actively dragging a particular screen, they might 672 // swipe it either left or right (but we won't advance by more than one screen) 673 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 674 } 675 } 676 677 // Only show page outlines as we pan if we are on large screen 678 if (LauncherApplication.isScreenLarge()) { 679 showOutlines(); 680 } 681 } 682 683 protected void onPageEndMoving() { 684 super.onPageEndMoving(); 685 686 if (isHardwareAccelerated()) { 687 updateChildrenLayersEnabled(); 688 } else { 689 clearChildrenCache(); 690 } 691 692 693 if (mDragController.isDragging()) { 694 if (isSmall()) { 695 // If we are in springloaded mode, then force an event to check if the current touch 696 // is under a new page (to scroll to) 697 mDragController.forceMoveEvent(); 698 } 699 } else { 700 // If we are not mid-dragging, hide the page outlines if we are on a large screen 701 if (LauncherApplication.isScreenLarge()) { 702 hideOutlines(); 703 } 704 } 705 mOverScrollMaxBackgroundAlpha = 0.0f; 706 mOverScrollPageIndex = -1; 707 708 if (mDelayedResizeRunnable != null) { 709 mDelayedResizeRunnable.run(); 710 mDelayedResizeRunnable = null; 711 } 712 } 713 714 @Override 715 protected void notifyPageSwitchListener() { 716 super.notifyPageSwitchListener(); 717 Launcher.setScreen(mCurrentPage); 718 }; 719 720 // As a ratio of screen height, the total distance we want the parallax effect to span 721 // horizontally 722 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 723 float aspectRatio = width / (float) height; 724 725 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 726 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 727 // We will use these two data points to extrapolate how much the wallpaper parallax effect 728 // to span (ie travel) at any aspect ratio: 729 730 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 731 final float ASPECT_RATIO_PORTRAIT = 10/16f; 732 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 733 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 734 735 // To find out the desired width at different aspect ratios, we use the following two 736 // formulas, where the coefficient on x is the aspect ratio (width/height): 737 // (16/10)x + y = 1.5 738 // (10/16)x + y = 1.2 739 // We solve for x and y and end up with a final formula: 740 final float x = 741 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 742 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 743 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 744 return x * aspectRatio + y; 745 } 746 747 // The range of scroll values for Workspace 748 private int getScrollRange() { 749 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 750 } 751 752 protected void setWallpaperDimension() { 753 DisplayMetrics displayMetrics = new DisplayMetrics(); 754 mLauncher.getWindowManager().getDefaultDisplay().getRealMetrics(displayMetrics); 755 final int maxDim = Math.max(displayMetrics.widthPixels, displayMetrics.heightPixels); 756 final int minDim = Math.min(displayMetrics.widthPixels, displayMetrics.heightPixels); 757 758 // We need to ensure that there is enough extra space in the wallpaper for the intended 759 // parallax effects 760 if (LauncherApplication.isScreenLarge()) { 761 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 762 mWallpaperHeight = maxDim; 763 } else { 764 mWallpaperWidth = Math.max((int) (minDim * WALLPAPER_SCREENS_SPAN), maxDim); 765 mWallpaperHeight = maxDim; 766 } 767 new Thread("setWallpaperDimension") { 768 public void run() { 769 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 770 } 771 }.start(); 772 } 773 774 public void setVerticalWallpaperOffset(float offset) { 775 mWallpaperOffset.setFinalY(offset); 776 } 777 public float getVerticalWallpaperOffset() { 778 return mWallpaperOffset.getCurrY(); 779 } 780 public void setHorizontalWallpaperOffset(float offset) { 781 mWallpaperOffset.setFinalX(offset); 782 } 783 public float getHorizontalWallpaperOffset() { 784 return mWallpaperOffset.getCurrX(); 785 } 786 787 private float wallpaperOffsetForCurrentScroll() { 788 // The wallpaper travel width is how far, from left to right, the wallpaper will move 789 // at this orientation. On tablets in portrait mode we don't move all the way to the 790 // edges of the wallpaper, or otherwise the parallax effect would be too strong. 791 int wallpaperTravelWidth = mWallpaperWidth; 792 if (LauncherApplication.isScreenLarge()) { 793 wallpaperTravelWidth = mWallpaperTravelWidth; 794 } 795 796 // Set wallpaper offset steps (1 / (number of screens - 1)) 797 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f); 798 799 // For the purposes of computing the scrollRange and overScrollOffset, we assume 800 // that mLayoutScale is 1. This means that when we're in spring-loaded mode, 801 // there's no discrepancy between the wallpaper offset for a given page. 802 float layoutScale = mLayoutScale; 803 mLayoutScale = 1f; 804 int scrollRange = getScrollRange(); 805 806 // Again, we adjust the wallpaper offset to be consistent between values of mLayoutScale 807 float adjustedScrollX = Math.max(0, Math.min(mScrollX, mMaxScrollX)); 808 adjustedScrollX *= mWallpaperScrollRatio; 809 mLayoutScale = layoutScale; 810 811 float scrollProgress = 812 adjustedScrollX / (float) scrollRange; 813 float offsetInDips = wallpaperTravelWidth * scrollProgress + 814 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 815 float offset = offsetInDips / (float) mWallpaperWidth; 816 return offset; 817 } 818 private void syncWallpaperOffsetWithScroll() { 819 final boolean enableWallpaperEffects = isHardwareAccelerated(); 820 if (enableWallpaperEffects) { 821 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 822 } 823 } 824 825 public void updateWallpaperOffsetImmediately() { 826 mUpdateWallpaperOffsetImmediately = true; 827 } 828 829 private void updateWallpaperOffsets() { 830 boolean updateNow = false; 831 boolean keepUpdating = true; 832 if (mUpdateWallpaperOffsetImmediately) { 833 updateNow = true; 834 keepUpdating = false; 835 mWallpaperOffset.jumpToFinal(); 836 mUpdateWallpaperOffsetImmediately = false; 837 } else { 838 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 839 } 840 if (updateNow) { 841 if (mWindowToken != null) { 842 mWallpaperManager.setWallpaperOffsets(mWindowToken, 843 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 844 } 845 } 846 if (keepUpdating) { 847 invalidate(); 848 } 849 } 850 851 @Override 852 protected void updateCurrentPageScroll() { 853 super.updateCurrentPageScroll(); 854 computeWallpaperScrollRatio(mCurrentPage); 855 } 856 857 @Override 858 protected void snapToPage(int whichPage) { 859 super.snapToPage(whichPage); 860 computeWallpaperScrollRatio(whichPage); 861 } 862 863 private void computeWallpaperScrollRatio(int page) { 864 // Here, we determine what the desired scroll would be with and without a layout scale, 865 // and compute a ratio between the two. This allows us to adjust the wallpaper offset 866 // as though there is no layout scale. 867 float layoutScale = mLayoutScale; 868 int scaled = getChildOffset(page) - getRelativeChildOffset(page); 869 mLayoutScale = 1.0f; 870 float unscaled = getChildOffset(page) - getRelativeChildOffset(page); 871 mLayoutScale = layoutScale; 872 if (scaled > 0) { 873 mWallpaperScrollRatio = (1.0f * unscaled) / scaled; 874 } else { 875 mWallpaperScrollRatio = 1f; 876 } 877 } 878 879 class WallpaperOffsetInterpolator { 880 float mFinalHorizontalWallpaperOffset = 0.0f; 881 float mFinalVerticalWallpaperOffset = 0.5f; 882 float mHorizontalWallpaperOffset = 0.0f; 883 float mVerticalWallpaperOffset = 0.5f; 884 long mLastWallpaperOffsetUpdateTime; 885 boolean mIsMovingFast; 886 boolean mOverrideHorizontalCatchupConstant; 887 float mHorizontalCatchupConstant = 0.35f; 888 float mVerticalCatchupConstant = 0.35f; 889 890 public WallpaperOffsetInterpolator() { 891 } 892 893 public void setOverrideHorizontalCatchupConstant(boolean override) { 894 mOverrideHorizontalCatchupConstant = override; 895 } 896 897 public void setHorizontalCatchupConstant(float f) { 898 mHorizontalCatchupConstant = f; 899 } 900 901 public void setVerticalCatchupConstant(float f) { 902 mVerticalCatchupConstant = f; 903 } 904 905 public boolean computeScrollOffset() { 906 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 907 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 908 mIsMovingFast = false; 909 return false; 910 } 911 boolean isLandscape = mDisplayWidth > mDisplayHeight; 912 913 long currentTime = System.currentTimeMillis(); 914 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 915 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 916 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 917 918 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 919 if (!mIsMovingFast && xdiff > 0.07) { 920 mIsMovingFast = true; 921 } 922 923 float fractionToCatchUpIn1MsHorizontal; 924 if (mOverrideHorizontalCatchupConstant) { 925 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 926 } else if (mIsMovingFast) { 927 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 928 } else { 929 // slow 930 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 931 } 932 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 933 934 fractionToCatchUpIn1MsHorizontal /= 33f; 935 fractionToCatchUpIn1MsVertical /= 33f; 936 937 final float UPDATE_THRESHOLD = 0.00001f; 938 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 939 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 940 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 941 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 942 943 // Don't have any lag between workspace and wallpaper on non-large devices 944 if (!LauncherApplication.isScreenLarge() || jumpToFinalValue) { 945 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 946 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 947 } else { 948 float percentToCatchUpVertical = 949 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 950 float percentToCatchUpHorizontal = 951 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 952 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 953 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 954 } 955 956 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 957 return true; 958 } 959 960 public float getCurrX() { 961 return mHorizontalWallpaperOffset; 962 } 963 964 public float getFinalX() { 965 return mFinalHorizontalWallpaperOffset; 966 } 967 968 public float getCurrY() { 969 return mVerticalWallpaperOffset; 970 } 971 972 public float getFinalY() { 973 return mFinalVerticalWallpaperOffset; 974 } 975 976 public void setFinalX(float x) { 977 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 978 } 979 980 public void setFinalY(float y) { 981 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 982 } 983 984 public void jumpToFinal() { 985 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 986 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 987 } 988 } 989 990 @Override 991 public void computeScroll() { 992 super.computeScroll(); 993 syncWallpaperOffsetWithScroll(); 994 } 995 996 void showOutlines() { 997 if (!isSmall() && !mIsSwitchingState) { 998 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 999 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1000 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 1001 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 1002 mChildrenOutlineFadeInAnimation.start(); 1003 } 1004 } 1005 1006 void hideOutlines() { 1007 if (!isSmall() && !mIsSwitchingState) { 1008 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1009 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1010 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 1011 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 1012 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 1013 mChildrenOutlineFadeOutAnimation.start(); 1014 } 1015 } 1016 1017 public void showOutlinesTemporarily() { 1018 if (!mIsPageMoving && !isTouchActive()) { 1019 snapToPage(mCurrentPage); 1020 } 1021 } 1022 1023 public void setChildrenOutlineAlpha(float alpha) { 1024 mChildrenOutlineAlpha = alpha; 1025 for (int i = 0; i < getChildCount(); i++) { 1026 CellLayout cl = (CellLayout) getChildAt(i); 1027 cl.setBackgroundAlpha(alpha); 1028 } 1029 } 1030 1031 public float getChildrenOutlineAlpha() { 1032 return mChildrenOutlineAlpha; 1033 } 1034 1035 void disableBackground() { 1036 mDrawBackground = false; 1037 } 1038 void enableBackground() { 1039 mDrawBackground = true; 1040 } 1041 1042 private void animateBackgroundGradient(float finalAlpha, boolean animated) { 1043 if (mBackground == null) return; 1044 if (mBackgroundFadeInAnimation != null) { 1045 mBackgroundFadeInAnimation.cancel(); 1046 mBackgroundFadeInAnimation = null; 1047 } 1048 if (mBackgroundFadeOutAnimation != null) { 1049 mBackgroundFadeOutAnimation.cancel(); 1050 mBackgroundFadeOutAnimation = null; 1051 } 1052 float startAlpha = getBackgroundAlpha(); 1053 if (finalAlpha != startAlpha) { 1054 if (animated) { 1055 mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(startAlpha, finalAlpha); 1056 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1057 public void onAnimationUpdate(ValueAnimator animation) { 1058 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1059 } 1060 }); 1061 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1062 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1063 mBackgroundFadeOutAnimation.start(); 1064 } else { 1065 setBackgroundAlpha(finalAlpha); 1066 } 1067 } 1068 } 1069 1070 public void setBackgroundAlpha(float alpha) { 1071 if (alpha != mBackgroundAlpha) { 1072 mBackgroundAlpha = alpha; 1073 invalidate(); 1074 } 1075 } 1076 1077 public float getBackgroundAlpha() { 1078 return mBackgroundAlpha; 1079 } 1080 1081 /** 1082 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 1083 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 1084 * as being larger. This method computes what offset the rotated view should be translated 1085 * in order to minimize this perceived gap. 1086 * @param degrees Angle of the view 1087 * @param width Width of the view 1088 * @param height Height of the view 1089 * @return Offset to be used in a View.setTranslationX() call 1090 */ 1091 private float getOffsetXForRotation(float degrees, int width, int height) { 1092 mMatrix.reset(); 1093 mCamera.save(); 1094 mCamera.rotateY(Math.abs(degrees)); 1095 mCamera.getMatrix(mMatrix); 1096 mCamera.restore(); 1097 1098 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 1099 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 1100 mTempFloat2[0] = width; 1101 mTempFloat2[1] = height; 1102 mMatrix.mapPoints(mTempFloat2); 1103 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 1104 } 1105 1106 float backgroundAlphaInterpolator(float r) { 1107 float pivotA = 0.1f; 1108 float pivotB = 0.4f; 1109 if (r < pivotA) { 1110 return 0; 1111 } else if (r > pivotB) { 1112 return 1.0f; 1113 } else { 1114 return (r - pivotA)/(pivotB - pivotA); 1115 } 1116 } 1117 1118 float overScrollBackgroundAlphaInterpolator(float r) { 1119 float threshold = 0.08f; 1120 1121 if (r > mOverScrollMaxBackgroundAlpha) { 1122 mOverScrollMaxBackgroundAlpha = r; 1123 } else if (r < mOverScrollMaxBackgroundAlpha) { 1124 r = mOverScrollMaxBackgroundAlpha; 1125 } 1126 1127 return Math.min(r / threshold, 1.0f); 1128 } 1129 1130 private void screenScrolledLargeUI(int screenCenter) { 1131 if (isSwitchingState()) return; 1132 boolean isInOverscroll = false; 1133 for (int i = 0; i < getChildCount(); i++) { 1134 CellLayout cl = (CellLayout) getChildAt(i); 1135 if (cl != null) { 1136 float scrollProgress = getScrollProgress(screenCenter, cl, i); 1137 float rotation = WORKSPACE_ROTATION * scrollProgress; 1138 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1139 1140 // If the current page (i) is being over scrolled, we use a different 1141 // set of rules for setting the background alpha multiplier. 1142 if (!isSmall()) { 1143 if ((mOverScrollX < 0 && i == 0) || (mOverScrollX > mMaxScrollX && 1144 i == getChildCount() -1)) { 1145 isInOverscroll = true; 1146 rotation *= -1; 1147 cl.setBackgroundAlphaMultiplier( 1148 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 1149 mOverScrollPageIndex = i; 1150 cl.setOverScrollAmount(Math.abs(scrollProgress), i == 0); 1151 cl.setPivotX(cl.getMeasuredWidth() * (i == 0 ? 0.75f : 0.25f)); 1152 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1153 cl.setOverscrollTransformsDirty(true); 1154 } else if (mOverScrollPageIndex != i) { 1155 cl.setBackgroundAlphaMultiplier( 1156 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1157 } 1158 } 1159 cl.setTranslationX(translationX); 1160 cl.setRotationY(rotation); 1161 if (mFadeInAdjacentScreens && !isSmall()) { 1162 float alpha = 1 - Math.abs(scrollProgress); 1163 cl.setAlpha(alpha); 1164 } 1165 } 1166 } 1167 if (!isSwitchingState() && !isInOverscroll) { 1168 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1169 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1170 } 1171 invalidate(); 1172 } 1173 1174 private void screenScrolledStandardUI(int screenCenter) { 1175 if (mOverScrollX < 0 || mOverScrollX > mMaxScrollX) { 1176 int index = mOverScrollX < 0 ? 0 : getChildCount() - 1; 1177 CellLayout cl = (CellLayout) getChildAt(index); 1178 float scrollProgress = getScrollProgress(screenCenter, cl, index); 1179 cl.setOverScrollAmount(Math.abs(scrollProgress), index == 0); 1180 float rotation = - WORKSPACE_OVERSCROLL_ROTATION * scrollProgress; 1181 cl.setCameraDistance(mDensity * CAMERA_DISTANCE); 1182 cl.setPivotX(cl.getMeasuredWidth() * (index == 0 ? 0.75f : 0.25f)); 1183 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1184 cl.setRotationY(rotation); 1185 cl.setOverscrollTransformsDirty(true); 1186 setFadeForOverScroll(Math.abs(scrollProgress)); 1187 } else { 1188 if (mOverscrollFade != 0) { 1189 setFadeForOverScroll(0); 1190 } 1191 // We don't want to mess with the translations during transitions 1192 if (!isSwitchingState()) { 1193 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1194 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1195 } 1196 } 1197 } 1198 1199 @Override 1200 protected void screenScrolled(int screenCenter) { 1201 if (LauncherApplication.isScreenLarge()) { 1202 // We don't call super.screenScrolled() here because we handle the adjacent pages alpha 1203 // ourselves (for efficiency), and there are no scrolling indicators to update. 1204 screenScrolledLargeUI(screenCenter); 1205 } else { 1206 super.screenScrolled(screenCenter); 1207 screenScrolledStandardUI(screenCenter); 1208 } 1209 } 1210 1211 @Override 1212 protected void overScroll(float amount) { 1213 if (LauncherApplication.isScreenLarge()) { 1214 dampedOverScroll(amount); 1215 } else { 1216 acceleratedOverScroll(amount); 1217 } 1218 } 1219 1220 protected void onAttachedToWindow() { 1221 super.onAttachedToWindow(); 1222 mWindowToken = getWindowToken(); 1223 computeScroll(); 1224 mDragController.setWindowToken(mWindowToken); 1225 } 1226 1227 protected void onDetachedFromWindow() { 1228 mWindowToken = null; 1229 } 1230 1231 @Override 1232 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1233 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1234 mUpdateWallpaperOffsetImmediately = true; 1235 } 1236 super.onLayout(changed, left, top, right, bottom); 1237 } 1238 1239 @Override 1240 protected void onDraw(Canvas canvas) { 1241 updateWallpaperOffsets(); 1242 1243 // Draw the background gradient if necessary 1244 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1245 int alpha = (int) (mBackgroundAlpha * 255); 1246 mBackground.setAlpha(alpha); 1247 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1248 getMeasuredHeight()); 1249 mBackground.draw(canvas); 1250 } 1251 1252 super.onDraw(canvas); 1253 } 1254 1255 boolean isDrawingBackgroundGradient() { 1256 return (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground); 1257 } 1258 1259 @Override 1260 protected void dispatchDraw(Canvas canvas) { 1261 super.dispatchDraw(canvas); 1262 1263 if (mInScrollArea && !LauncherApplication.isScreenLarge()) { 1264 final int width = getWidth(); 1265 final int height = getHeight(); 1266 final int pageHeight = getChildAt(0).getHeight(); 1267 1268 // Set the height of the outline to be the height of the page 1269 final int offset = (height - pageHeight - mPaddingTop - mPaddingBottom) / 2; 1270 final int paddingTop = mPaddingTop + offset; 1271 final int paddingBottom = mPaddingBottom + offset; 1272 1273 final int page = (mNextPage != INVALID_PAGE ? mNextPage : mCurrentPage); 1274 final CellLayout leftPage = (CellLayout) getChildAt(page - 1); 1275 final CellLayout rightPage = (CellLayout) getChildAt(page + 1); 1276 1277 if (leftPage != null && leftPage.getIsDragOverlapping()) { 1278 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left_holo); 1279 d.setBounds(mScrollX, paddingTop, mScrollX + d.getIntrinsicWidth(), 1280 height - paddingBottom); 1281 d.draw(canvas); 1282 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 1283 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right_holo); 1284 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), paddingTop, mScrollX + width, 1285 height - paddingBottom); 1286 d.draw(canvas); 1287 } 1288 } 1289 } 1290 1291 @Override 1292 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1293 if (!mLauncher.isAllAppsVisible()) { 1294 final Folder openFolder = getOpenFolder(); 1295 if (openFolder != null) { 1296 return openFolder.requestFocus(direction, previouslyFocusedRect); 1297 } else { 1298 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1299 } 1300 } 1301 return false; 1302 } 1303 1304 @Override 1305 public int getDescendantFocusability() { 1306 if (isSmall()) { 1307 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1308 } 1309 return super.getDescendantFocusability(); 1310 } 1311 1312 @Override 1313 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1314 if (!mLauncher.isAllAppsVisible()) { 1315 final Folder openFolder = getOpenFolder(); 1316 if (openFolder != null) { 1317 openFolder.addFocusables(views, direction); 1318 } else { 1319 super.addFocusables(views, direction, focusableMode); 1320 } 1321 } 1322 } 1323 1324 public boolean isSmall() { 1325 return mState == State.SMALL || mState == State.SPRING_LOADED; 1326 } 1327 1328 void enableChildrenCache(int fromPage, int toPage) { 1329 if (fromPage > toPage) { 1330 final int temp = fromPage; 1331 fromPage = toPage; 1332 toPage = temp; 1333 } 1334 1335 final int screenCount = getChildCount(); 1336 1337 fromPage = Math.max(fromPage, 0); 1338 toPage = Math.min(toPage, screenCount - 1); 1339 1340 for (int i = fromPage; i <= toPage; i++) { 1341 final CellLayout layout = (CellLayout) getChildAt(i); 1342 layout.setChildrenDrawnWithCacheEnabled(true); 1343 layout.setChildrenDrawingCacheEnabled(true); 1344 } 1345 } 1346 1347 void clearChildrenCache() { 1348 final int screenCount = getChildCount(); 1349 for (int i = 0; i < screenCount; i++) { 1350 final CellLayout layout = (CellLayout) getChildAt(i); 1351 layout.setChildrenDrawnWithCacheEnabled(false); 1352 // In software mode, we don't want the items to continue to be drawn into bitmaps 1353 if (!isHardwareAccelerated()) { 1354 layout.setChildrenDrawingCacheEnabled(false); 1355 } 1356 } 1357 } 1358 1359 private void updateChildrenLayersEnabled() { 1360 boolean small = isSmall() || mIsSwitchingState; 1361 boolean dragging = mAnimatingViewIntoPlace || mIsDragOccuring; 1362 boolean enableChildrenLayers = small || dragging || isPageMoving(); 1363 1364 if (enableChildrenLayers != mChildrenLayersEnabled) { 1365 mChildrenLayersEnabled = enableChildrenLayers; 1366 for (int i = 0; i < getPageCount(); i++) { 1367 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(mChildrenLayersEnabled); 1368 } 1369 } 1370 } 1371 1372 protected void onWallpaperTap(MotionEvent ev) { 1373 final int[] position = mTempCell; 1374 getLocationOnScreen(position); 1375 1376 int pointerIndex = ev.getActionIndex(); 1377 position[0] += (int) ev.getX(pointerIndex); 1378 position[1] += (int) ev.getY(pointerIndex); 1379 1380 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1381 ev.getAction() == MotionEvent.ACTION_UP 1382 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1383 position[0], position[1], 0, null); 1384 } 1385 1386 /* 1387 * This interpolator emulates the rate at which the perceived scale of an object changes 1388 * as its distance from a camera increases. When this interpolator is applied to a scale 1389 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1390 * from the camera. 1391 */ 1392 static class ZInterpolator implements TimeInterpolator { 1393 private float focalLength; 1394 1395 public ZInterpolator(float foc) { 1396 focalLength = foc; 1397 } 1398 1399 public float getInterpolation(float input) { 1400 return (1.0f - focalLength / (focalLength + input)) / 1401 (1.0f - focalLength / (focalLength + 1.0f)); 1402 } 1403 } 1404 1405 /* 1406 * The exact reverse of ZInterpolator. 1407 */ 1408 static class InverseZInterpolator implements TimeInterpolator { 1409 private ZInterpolator zInterpolator; 1410 public InverseZInterpolator(float foc) { 1411 zInterpolator = new ZInterpolator(foc); 1412 } 1413 public float getInterpolation(float input) { 1414 return 1 - zInterpolator.getInterpolation(1 - input); 1415 } 1416 } 1417 1418 /* 1419 * ZInterpolator compounded with an ease-out. 1420 */ 1421 static class ZoomOutInterpolator implements TimeInterpolator { 1422 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(0.75f); 1423 private final ZInterpolator zInterpolator = new ZInterpolator(0.13f); 1424 1425 public float getInterpolation(float input) { 1426 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1427 } 1428 } 1429 1430 /* 1431 * InvereZInterpolator compounded with an ease-out. 1432 */ 1433 static class ZoomInInterpolator implements TimeInterpolator { 1434 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1435 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1436 1437 public float getInterpolation(float input) { 1438 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1439 } 1440 } 1441 1442 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1443 1444 /* 1445 * 1446 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1447 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1448 * 1449 * These methods mark the appropriate pages as accepting drops (which alters their visual 1450 * appearance). 1451 * 1452 */ 1453 public void onDragStartedWithItem(View v) { 1454 final Canvas canvas = new Canvas(); 1455 1456 // We need to add extra padding to the bitmap to make room for the glow effect 1457 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1458 1459 // The outline is used to visualize where the item will land if dropped 1460 mDragOutline = createDragOutline(v, canvas, bitmapPadding); 1461 } 1462 1463 public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, Paint alphaClipPaint) { 1464 final Canvas canvas = new Canvas(); 1465 1466 // We need to add extra padding to the bitmap to make room for the glow effect 1467 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1468 1469 int[] size = estimateItemSize(info.spanX, info.spanY, info, false); 1470 1471 // The outline is used to visualize where the item will land if dropped 1472 mDragOutline = createDragOutline(b, canvas, bitmapPadding, size[0], size[1], alphaClipPaint); 1473 } 1474 1475 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1476 // never dragged over 1477 public void onDragStopped(boolean success) { 1478 // In the success case, DragController has already called onDragExit() 1479 if (!success) { 1480 doDragExit(null); 1481 } 1482 } 1483 1484 public void exitWidgetResizeMode() { 1485 DragLayer dragLayer = mLauncher.getDragLayer(); 1486 dragLayer.clearAllResizeFrames(); 1487 } 1488 1489 private void initAnimationArrays() { 1490 final int childCount = getChildCount(); 1491 if (mOldTranslationXs != null) return; 1492 mOldTranslationXs = new float[childCount]; 1493 mOldTranslationYs = new float[childCount]; 1494 mOldScaleXs = new float[childCount]; 1495 mOldScaleYs = new float[childCount]; 1496 mOldBackgroundAlphas = new float[childCount]; 1497 mOldBackgroundAlphaMultipliers = new float[childCount]; 1498 mOldAlphas = new float[childCount]; 1499 mOldRotationYs = new float[childCount]; 1500 mNewTranslationXs = new float[childCount]; 1501 mNewTranslationYs = new float[childCount]; 1502 mNewScaleXs = new float[childCount]; 1503 mNewScaleYs = new float[childCount]; 1504 mNewBackgroundAlphas = new float[childCount]; 1505 mNewBackgroundAlphaMultipliers = new float[childCount]; 1506 mNewAlphas = new float[childCount]; 1507 mNewRotationYs = new float[childCount]; 1508 } 1509 1510 Animator getChangeStateAnimation(final State state, boolean animated) { 1511 return getChangeStateAnimation(state, animated, 0); 1512 } 1513 1514 Animator getChangeStateAnimation(final State state, boolean animated, int delay) { 1515 if (mState == state) { 1516 return null; 1517 } 1518 1519 // Initialize animation arrays for the first time if necessary 1520 initAnimationArrays(); 1521 1522 AnimatorSet anim = animated ? new AnimatorSet() : null; 1523 1524 // Stop any scrolling, move to the current page right away 1525 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1526 1527 final State oldState = mState; 1528 final boolean oldStateIsNormal = (oldState == State.NORMAL); 1529 final boolean oldStateIsSmall = (oldState == State.SMALL); 1530 mState = state; 1531 final boolean stateIsNormal = (state == State.NORMAL); 1532 final boolean stateIsSpringLoaded = (state == State.SPRING_LOADED); 1533 final boolean stateIsSmall = (state == State.SMALL); 1534 float finalScaleFactor = 1.0f; 1535 float finalBackgroundAlpha = stateIsSpringLoaded ? 1.0f : 0f; 1536 float translationX = 0; 1537 float translationY = 0; 1538 boolean zoomIn = true; 1539 1540 if (state != State.NORMAL) { 1541 finalScaleFactor = mSpringLoadedShrinkFactor - (stateIsSmall ? 0.1f : 0); 1542 if (oldStateIsNormal && stateIsSmall) { 1543 zoomIn = false; 1544 setLayoutScale(finalScaleFactor); 1545 updateChildrenLayersEnabled(); 1546 } else { 1547 finalBackgroundAlpha = 1.0f; 1548 setLayoutScale(finalScaleFactor); 1549 } 1550 } else { 1551 setLayoutScale(1.0f); 1552 } 1553 1554 final int duration = zoomIn ? 1555 getResources().getInteger(R.integer.config_workspaceUnshrinkTime) : 1556 getResources().getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1557 for (int i = 0; i < getChildCount(); i++) { 1558 final CellLayout cl = (CellLayout) getChildAt(i); 1559 float rotation = 0f; 1560 float initialAlpha = cl.getAlpha(); 1561 float finalAlphaMultiplierValue = 1f; 1562 float finalAlpha = (!mFadeInAdjacentScreens || stateIsSpringLoaded || 1563 (i == mCurrentPage)) ? 1f : 0f; 1564 1565 // Determine the pages alpha during the state transition 1566 if ((oldStateIsSmall && stateIsNormal) || 1567 (oldStateIsNormal && stateIsSmall)) { 1568 // To/from workspace - only show the current page unless the transition is not 1569 // animated and the animation end callback below doesn't run 1570 if (i == mCurrentPage || !animated) { 1571 finalAlpha = 1f; 1572 finalAlphaMultiplierValue = 0f; 1573 } else { 1574 initialAlpha = 0f; 1575 finalAlpha = 0f; 1576 } 1577 } 1578 1579 // Update the rotation of the screen (don't apply rotation on Phone UI) 1580 if (LauncherApplication.isScreenLarge()) { 1581 if (i < mCurrentPage) { 1582 rotation = WORKSPACE_ROTATION; 1583 } else if (i > mCurrentPage) { 1584 rotation = -WORKSPACE_ROTATION; 1585 } 1586 } 1587 1588 // If the screen is not xlarge, then don't rotate the CellLayouts 1589 // NOTE: If we don't update the side pages alpha, then we should not hide the side 1590 // pages. see unshrink(). 1591 if (LauncherApplication.isScreenLarge()) { 1592 translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1593 } 1594 1595 mOldAlphas[i] = initialAlpha; 1596 mNewAlphas[i] = finalAlpha; 1597 if (animated) { 1598 mOldTranslationXs[i] = cl.getTranslationX(); 1599 mOldTranslationYs[i] = cl.getTranslationY(); 1600 mOldScaleXs[i] = cl.getScaleX(); 1601 mOldScaleYs[i] = cl.getScaleY(); 1602 mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1603 mOldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1604 mOldRotationYs[i] = cl.getRotationY(); 1605 1606 mNewTranslationXs[i] = translationX; 1607 mNewTranslationYs[i] = translationY; 1608 mNewScaleXs[i] = finalScaleFactor; 1609 mNewScaleYs[i] = finalScaleFactor; 1610 mNewBackgroundAlphas[i] = finalBackgroundAlpha; 1611 mNewBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1612 mNewRotationYs[i] = rotation; 1613 } else { 1614 cl.setTranslationX(translationX); 1615 cl.setTranslationY(translationY); 1616 cl.setScaleX(finalScaleFactor); 1617 cl.setScaleY(finalScaleFactor); 1618 cl.setBackgroundAlpha(finalBackgroundAlpha); 1619 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1620 cl.setAlpha(finalAlpha); 1621 cl.setRotationY(rotation); 1622 } 1623 } 1624 1625 if (animated) { 1626 for (int index = 0; index < getChildCount(); index++) { 1627 final int i = index; 1628 final CellLayout cl = (CellLayout) getChildAt(i); 1629 if (mOldAlphas[i] == 0 && mNewAlphas[i] == 0) { 1630 cl.setTranslationX(mNewTranslationXs[i]); 1631 cl.setTranslationY(mNewTranslationYs[i]); 1632 cl.setScaleX(mNewScaleXs[i]); 1633 cl.setScaleY(mNewScaleYs[i]); 1634 cl.setBackgroundAlpha(mNewBackgroundAlphas[i]); 1635 cl.setBackgroundAlphaMultiplier(mNewBackgroundAlphaMultipliers[i]); 1636 cl.setAlpha(mNewAlphas[i]); 1637 cl.setRotationY(mNewRotationYs[i]); 1638 } else { 1639 LauncherViewPropertyAnimator a = new LauncherViewPropertyAnimator(cl); 1640 a.translationX(mNewTranslationXs[i]) 1641 .translationY(mNewTranslationYs[i]) 1642 .scaleX(mNewScaleXs[i]) 1643 .scaleY(mNewScaleYs[i]) 1644 .setDuration(duration) 1645 .setInterpolator(mZoomInInterpolator); 1646 if (mOldAlphas[i] != mNewAlphas[i]) { 1647 a.alpha(mNewAlphas[i]); 1648 } 1649 anim.play(a); 1650 if (mOldRotationYs[i] != 0 || mNewRotationYs[i] != 0) { 1651 ValueAnimator rotate = ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1652 rotate.setInterpolator(new DecelerateInterpolator(2.0f)); 1653 rotate.addUpdateListener(new LauncherAnimatorUpdateListener() { 1654 public void onAnimationUpdate(float a, float b) { 1655 cl.setRotationY(a * 0f + b * 1f); 1656 } 1657 }); 1658 anim.play(rotate); 1659 } 1660 if (mOldBackgroundAlphas[i] != 0 || 1661 mNewBackgroundAlphas[i] != 0 || 1662 mOldBackgroundAlphaMultipliers[i] != 0 || 1663 mNewBackgroundAlphaMultipliers[i] != 0) { 1664 ValueAnimator bgAnim = ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1665 bgAnim.setInterpolator(mZoomInInterpolator); 1666 bgAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1667 public void onAnimationUpdate(float a, float b) { 1668 cl.setBackgroundAlpha( 1669 a * mOldBackgroundAlphas[i] + 1670 b * mNewBackgroundAlphas[i]); 1671 cl.setBackgroundAlphaMultiplier( 1672 a * mOldBackgroundAlphaMultipliers[i] + 1673 b * mNewBackgroundAlphaMultipliers[i]); 1674 } 1675 }); 1676 anim.play(bgAnim); 1677 } 1678 } 1679 } 1680 anim.setStartDelay(delay); 1681 } 1682 1683 if (stateIsSpringLoaded) { 1684 // Right now we're covered by Apps Customize 1685 // Show the background gradient immediately, so the gradient will 1686 // be showing once AppsCustomize disappears 1687 animateBackgroundGradient(getResources().getInteger( 1688 R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, false); 1689 } else { 1690 // Fade the background gradient away 1691 animateBackgroundGradient(0f, true); 1692 } 1693 return anim; 1694 } 1695 1696 @Override 1697 public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) { 1698 mIsSwitchingState = true; 1699 } 1700 1701 @Override 1702 public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) { 1703 mIsSwitchingState = false; 1704 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 1705 updateChildrenLayersEnabled(); 1706 // The code in getChangeStateAnimation to determine initialAlpha and finalAlpha will ensure 1707 // ensure that only the current page is visible during (and subsequently, after) the 1708 // transition animation. If fade adjacent pages is disabled, then re-enable the page 1709 // visibility after the transition animation. 1710 if (!mFadeInAdjacentScreens) { 1711 for (int i = 0; i < getChildCount(); i++) { 1712 final CellLayout cl = (CellLayout) getChildAt(i); 1713 cl.setAlpha(1f); 1714 } 1715 } 1716 } 1717 1718 @Override 1719 public View getContent() { 1720 return this; 1721 } 1722 1723 /** 1724 * Draw the View v into the given Canvas. 1725 * 1726 * @param v the view to draw 1727 * @param destCanvas the canvas to draw on 1728 * @param padding the horizontal and vertical padding to use when drawing 1729 */ 1730 private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { 1731 final Rect clipRect = mTempRect; 1732 v.getDrawingRect(clipRect); 1733 1734 boolean textVisible = false; 1735 1736 destCanvas.save(); 1737 if (v instanceof TextView && pruneToDrawable) { 1738 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1739 clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); 1740 destCanvas.translate(padding / 2, padding / 2); 1741 d.draw(destCanvas); 1742 } else { 1743 if (v instanceof FolderIcon) { 1744 // For FolderIcons the text can bleed into the icon area, and so we need to 1745 // hide the text completely (which can't be achieved by clipping). 1746 if (((FolderIcon) v).getTextVisible()) { 1747 ((FolderIcon) v).setTextVisible(false); 1748 textVisible = true; 1749 } 1750 } else if (v instanceof BubbleTextView) { 1751 final BubbleTextView tv = (BubbleTextView) v; 1752 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1753 tv.getLayout().getLineTop(0); 1754 } else if (v instanceof TextView) { 1755 final TextView tv = (TextView) v; 1756 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1757 tv.getLayout().getLineTop(0); 1758 } 1759 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1760 destCanvas.clipRect(clipRect, Op.REPLACE); 1761 v.draw(destCanvas); 1762 1763 // Restore text visibility of FolderIcon if necessary 1764 if (textVisible) { 1765 ((FolderIcon) v).setTextVisible(true); 1766 } 1767 } 1768 destCanvas.restore(); 1769 } 1770 1771 /** 1772 * Returns a new bitmap to show when the given View is being dragged around. 1773 * Responsibility for the bitmap is transferred to the caller. 1774 */ 1775 public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1776 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1777 Bitmap b; 1778 1779 if (v instanceof TextView) { 1780 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1781 b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, 1782 d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); 1783 } else { 1784 b = Bitmap.createBitmap( 1785 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1786 } 1787 1788 canvas.setBitmap(b); 1789 drawDragView(v, canvas, padding, true); 1790 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 1791 canvas.drawColor(mDragViewMultiplyColor, PorterDuff.Mode.MULTIPLY); 1792 canvas.setBitmap(null); 1793 1794 return b; 1795 } 1796 1797 /** 1798 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1799 * Responsibility for the bitmap is transferred to the caller. 1800 */ 1801 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1802 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1803 final Bitmap b = Bitmap.createBitmap( 1804 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1805 1806 canvas.setBitmap(b); 1807 drawDragView(v, canvas, padding, true); 1808 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1809 canvas.setBitmap(null); 1810 return b; 1811 } 1812 1813 /** 1814 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1815 * Responsibility for the bitmap is transferred to the caller. 1816 */ 1817 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h, 1818 Paint alphaClipPaint) { 1819 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1820 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1821 canvas.setBitmap(b); 1822 1823 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 1824 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 1825 (h - padding) / (float) orig.getHeight()); 1826 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 1827 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 1828 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 1829 1830 // center the image 1831 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 1832 1833 canvas.drawBitmap(orig, src, dst, null); 1834 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor, 1835 alphaClipPaint); 1836 canvas.setBitmap(null); 1837 1838 return b; 1839 } 1840 1841 /** 1842 * Creates a drag outline to represent a drop (that we don't have the actual information for 1843 * yet). May be changed in the future to alter the drop outline slightly depending on the 1844 * clip description mime data. 1845 */ 1846 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 1847 Resources r = getResources(); 1848 final int outlineColor = r.getColor(android.R.color.holo_blue_light); 1849 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 1850 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 1851 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 1852 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 1853 final Bitmap b = Bitmap.createBitmap( 1854 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 1855 1856 canvas.setBitmap(b); 1857 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 1858 rectRadius, rectRadius, mExternalDragOutlinePaint); 1859 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1860 canvas.setBitmap(null); 1861 return b; 1862 } 1863 1864 void startDrag(CellLayout.CellInfo cellInfo) { 1865 View child = cellInfo.cell; 1866 1867 // Make sure the drag was started by a long press as opposed to a long click. 1868 if (!child.isInTouchMode()) { 1869 return; 1870 } 1871 1872 mDragInfo = cellInfo; 1873 child.setVisibility(GONE); 1874 1875 child.clearFocus(); 1876 child.setPressed(false); 1877 1878 final Canvas canvas = new Canvas(); 1879 1880 // We need to add extra padding to the bitmap to make room for the glow effect 1881 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1882 1883 // The outline is used to visualize where the item will land if dropped 1884 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 1885 beginDragShared(child, this); 1886 } 1887 1888 public void beginDragShared(View child, DragSource source) { 1889 Resources r = getResources(); 1890 1891 // We need to add extra padding to the bitmap to make room for the glow effect 1892 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1893 1894 // The drag bitmap follows the touch point around on the screen 1895 final Bitmap b = createDragBitmap(child, new Canvas(), bitmapPadding); 1896 1897 final int bmpWidth = b.getWidth(); 1898 1899 mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 1900 final int dragLayerX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 1901 int dragLayerY = mTempXY[1] - bitmapPadding / 2; 1902 1903 Point dragVisualizeOffset = null; 1904 Rect dragRect = null; 1905 if (child instanceof BubbleTextView || child instanceof PagedViewIcon) { 1906 int iconSize = r.getDimensionPixelSize(R.dimen.app_icon_size); 1907 int iconPaddingTop = r.getDimensionPixelSize(R.dimen.app_icon_padding_top); 1908 int top = child.getPaddingTop(); 1909 int left = (bmpWidth - iconSize) / 2; 1910 int right = left + iconSize; 1911 int bottom = top + iconSize; 1912 dragLayerY += top; 1913 // Note: The drag region is used to calculate drag layer offsets, but the 1914 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 1915 dragVisualizeOffset = new Point(-bitmapPadding / 2, iconPaddingTop - bitmapPadding / 2); 1916 dragRect = new Rect(left, top, right, bottom); 1917 } else if (child instanceof FolderIcon) { 1918 int previewSize = r.getDimensionPixelSize(R.dimen.folder_preview_size); 1919 dragRect = new Rect(0, 0, child.getWidth(), previewSize); 1920 } 1921 1922 // Clear the pressed state if necessary 1923 if (child instanceof BubbleTextView) { 1924 BubbleTextView icon = (BubbleTextView) child; 1925 icon.clearPressedOrFocusedBackground(); 1926 } 1927 1928 mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 1929 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect); 1930 b.recycle(); 1931 } 1932 1933 void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, int screen, 1934 int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { 1935 View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); 1936 1937 final int[] cellXY = new int[2]; 1938 target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1939 addInScreen(view, container, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1940 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, cellXY[0], 1941 cellXY[1]); 1942 } 1943 1944 public boolean transitionStateShouldAllowDrop() { 1945 return (!isSwitchingState() || mTransitionProgress > 0.5f); 1946 } 1947 1948 /** 1949 * {@inheritDoc} 1950 */ 1951 public boolean acceptDrop(DragObject d) { 1952 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1953 if (d.dragSource != this) { 1954 // Don't accept the drop if we're not over a screen at time of drop 1955 if (mDragTargetLayout == null) { 1956 return false; 1957 } 1958 if (!transitionStateShouldAllowDrop()) return false; 1959 1960 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 1961 d.dragView, mDragViewVisualCenter); 1962 1963 // We want the point to be mapped to the dragTarget. 1964 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 1965 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 1966 } else { 1967 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 1968 } 1969 1970 int spanX = 1; 1971 int spanY = 1; 1972 View ignoreView = null; 1973 if (mDragInfo != null) { 1974 final CellLayout.CellInfo dragCellInfo = mDragInfo; 1975 spanX = dragCellInfo.spanX; 1976 spanY = dragCellInfo.spanY; 1977 ignoreView = dragCellInfo.cell; 1978 } else { 1979 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 1980 spanX = dragInfo.spanX; 1981 spanY = dragInfo.spanY; 1982 } 1983 1984 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 1985 (int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell); 1986 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, true)) { 1987 return true; 1988 } 1989 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, 1990 mTargetCell)) { 1991 return true; 1992 } 1993 1994 // Don't accept the drop if there's no room for the item 1995 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 1996 // Don't show the message if we are dropping on the AllApps button and the hotseat 1997 // is full 1998 if (mTargetCell != null && mLauncher.isHotseatLayout(mDragTargetLayout)) { 1999 Hotseat hotseat = mLauncher.getHotseat(); 2000 if (Hotseat.isAllAppsButtonRank( 2001 hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { 2002 return false; 2003 } 2004 } 2005 2006 mLauncher.showOutOfSpaceMessage(); 2007 return false; 2008 } 2009 } 2010 return true; 2011 } 2012 2013 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, 2014 boolean considerTimeout) { 2015 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2016 2017 boolean hasntMoved = false; 2018 if (mDragInfo != null) { 2019 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2020 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2021 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2022 } 2023 2024 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2025 return false; 2026 } 2027 2028 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2029 boolean willBecomeShortcut = 2030 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2031 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2032 2033 return (aboveShortcut && willBecomeShortcut); 2034 } 2035 2036 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell) { 2037 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2038 if (dropOverView instanceof FolderIcon) { 2039 FolderIcon fi = (FolderIcon) dropOverView; 2040 if (fi.acceptDrop(dragInfo)) { 2041 return true; 2042 } 2043 } 2044 return false; 2045 } 2046 2047 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2048 int[] targetCell, boolean external, DragView dragView, Runnable postAnimationRunnable) { 2049 View v = target.getChildAt(targetCell[0], targetCell[1]); 2050 boolean hasntMoved = false; 2051 if (mDragInfo != null) { 2052 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2053 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2054 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2055 } 2056 2057 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2058 mCreateUserFolderOnDrop = false; 2059 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 2060 2061 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2062 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2063 2064 if (aboveShortcut && willBecomeShortcut) { 2065 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2066 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2067 // if the drag started here, we need to remove it from the workspace 2068 if (!external) { 2069 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2070 } 2071 2072 Rect folderLocation = new Rect(); 2073 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2074 target.removeView(v); 2075 2076 FolderIcon fi = 2077 mLauncher.addFolder(target, container, screen, targetCell[0], targetCell[1]); 2078 destInfo.cellX = -1; 2079 destInfo.cellY = -1; 2080 sourceInfo.cellX = -1; 2081 sourceInfo.cellY = -1; 2082 2083 // If the dragView is null, we can't animate 2084 boolean animate = dragView != null; 2085 if (animate) { 2086 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2087 postAnimationRunnable); 2088 } else { 2089 fi.addItem(destInfo); 2090 fi.addItem(sourceInfo); 2091 } 2092 return true; 2093 } 2094 return false; 2095 } 2096 2097 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2098 DragObject d, boolean external) { 2099 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2100 if (dropOverView instanceof FolderIcon) { 2101 FolderIcon fi = (FolderIcon) dropOverView; 2102 if (fi.acceptDrop(d.dragInfo)) { 2103 fi.onDrop(d); 2104 2105 // if the drag started here, we need to remove it from the workspace 2106 if (!external) { 2107 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2108 } 2109 return true; 2110 } 2111 } 2112 return false; 2113 } 2114 2115 public void onDrop(DragObject d) { 2116 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2117 mDragViewVisualCenter); 2118 2119 // We want the point to be mapped to the dragTarget. 2120 if (mDragTargetLayout != null) { 2121 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2122 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2123 } else { 2124 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2125 } 2126 } 2127 2128 CellLayout dropTargetLayout = mDragTargetLayout; 2129 2130 int snapScreen = -1; 2131 if (d.dragSource != this) { 2132 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2133 (int) mDragViewVisualCenter[1] }; 2134 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2135 } else if (mDragInfo != null) { 2136 final View cell = mDragInfo.cell; 2137 2138 if (dropTargetLayout != null) { 2139 // Move internally 2140 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2141 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2142 long container = hasMovedIntoHotseat ? 2143 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2144 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2145 int screen = (mTargetCell[0] < 0) ? 2146 mDragInfo.screen : indexOfChild(dropTargetLayout); 2147 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2148 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2149 // First we find the cell nearest to point at which the item is 2150 // dropped, without any consideration to whether there is an item there. 2151 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2152 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2153 // If the item being dropped is a shortcut and the nearest drop 2154 // cell also contains a shortcut, then create a folder with the two shortcuts. 2155 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2156 dropTargetLayout, mTargetCell, false, d.dragView, null)) { 2157 return; 2158 } 2159 2160 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, d, false)) { 2161 return; 2162 } 2163 2164 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2165 // we need to find the nearest cell location that is vacant 2166 mTargetCell = findNearestVacantArea((int) mDragViewVisualCenter[0], 2167 (int) mDragViewVisualCenter[1], mDragInfo.spanX, mDragInfo.spanY, cell, 2168 dropTargetLayout, mTargetCell); 2169 2170 if (mCurrentPage != screen && !hasMovedIntoHotseat) { 2171 snapScreen = screen; 2172 snapToPage(screen); 2173 } 2174 2175 if (mTargetCell[0] >= 0 && mTargetCell[1] >= 0) { 2176 if (hasMovedLayouts) { 2177 // Reparent the view 2178 getParentCellLayoutForView(cell).removeView(cell); 2179 addInScreen(cell, container, screen, mTargetCell[0], mTargetCell[1], 2180 mDragInfo.spanX, mDragInfo.spanY); 2181 } 2182 2183 // update the item's position after drop 2184 final ItemInfo info = (ItemInfo) cell.getTag(); 2185 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2186 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 2187 lp.cellX = mTargetCell[0]; 2188 lp.cellY = mTargetCell[1]; 2189 cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screen, 2190 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2191 2192 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2193 cell instanceof LauncherAppWidgetHostView) { 2194 final CellLayout cellLayout = dropTargetLayout; 2195 // We post this call so that the widget has a chance to be placed 2196 // in its final location 2197 2198 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2199 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2200 if (pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2201 final Runnable resizeRunnable = new Runnable() { 2202 public void run() { 2203 DragLayer dragLayer = mLauncher.getDragLayer(); 2204 dragLayer.addResizeFrame(info, hostView, cellLayout); 2205 } 2206 }; 2207 post(new Runnable() { 2208 public void run() { 2209 if (!isPageMoving()) { 2210 resizeRunnable.run(); 2211 } else { 2212 mDelayedResizeRunnable = resizeRunnable; 2213 } 2214 } 2215 }); 2216 } 2217 } 2218 2219 LauncherModel.moveItemInDatabase(mLauncher, info, container, screen, lp.cellX, 2220 lp.cellY); 2221 } 2222 } 2223 2224 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2225 2226 // Prepare it to be animated into its new position 2227 // This must be called after the view has been re-parented 2228 final Runnable disableHardwareLayersRunnable = new Runnable() { 2229 @Override 2230 public void run() { 2231 mAnimatingViewIntoPlace = false; 2232 updateChildrenLayersEnabled(); 2233 } 2234 }; 2235 mAnimatingViewIntoPlace = true; 2236 if (d.dragView.hasDrawn()) { 2237 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2238 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2239 disableHardwareLayersRunnable, this); 2240 } else { 2241 cell.setVisibility(VISIBLE); 2242 } 2243 parent.onDropChild(cell); 2244 } 2245 } 2246 2247 public void setFinalScrollForPageChange(int screen) { 2248 if (screen >= 0) { 2249 mSavedScrollX = getScrollX(); 2250 CellLayout cl = (CellLayout) getChildAt(screen); 2251 mSavedTranslationX = cl.getTranslationX(); 2252 mSavedRotationY = cl.getRotationY(); 2253 final int newX = getChildOffset(screen) - getRelativeChildOffset(screen); 2254 setScrollX(newX); 2255 cl.setTranslationX(0f); 2256 cl.setRotationY(0f); 2257 } 2258 } 2259 2260 public void resetFinalScrollForPageChange(int screen) { 2261 if (screen >= 0) { 2262 CellLayout cl = (CellLayout) getChildAt(screen); 2263 setScrollX(mSavedScrollX); 2264 cl.setTranslationX(mSavedTranslationX); 2265 cl.setRotationY(mSavedRotationY); 2266 } 2267 } 2268 2269 public void getViewLocationRelativeToSelf(View v, int[] location) { 2270 getLocationInWindow(location); 2271 int x = location[0]; 2272 int y = location[1]; 2273 2274 v.getLocationInWindow(location); 2275 int vX = location[0]; 2276 int vY = location[1]; 2277 2278 location[0] = vX - x; 2279 location[1] = vY - y; 2280 } 2281 2282 public void onDragEnter(DragObject d) { 2283 mDragHasEnteredWorkspace = true; 2284 if (mDragTargetLayout != null) { 2285 mDragTargetLayout.setIsDragOverlapping(false); 2286 mDragTargetLayout.onDragExit(); 2287 } 2288 mDragTargetLayout = getCurrentDropLayout(); 2289 mDragTargetLayout.setIsDragOverlapping(true); 2290 mDragTargetLayout.onDragEnter(); 2291 2292 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2293 // don't need to show the outlines 2294 if (LauncherApplication.isScreenLarge()) { 2295 showOutlines(); 2296 } 2297 } 2298 2299 private void doDragExit(DragObject d) { 2300 // Clean up folders 2301 cleanupFolderCreation(d); 2302 2303 // Reset the scroll area and previous drag target 2304 onResetScrollArea(); 2305 2306 if (mDragTargetLayout != null) { 2307 mDragTargetLayout.setIsDragOverlapping(false); 2308 mDragTargetLayout.onDragExit(); 2309 } 2310 mLastDragOverView = null; 2311 mSpringLoadedDragController.cancel(); 2312 2313 if (!mIsPageMoving) { 2314 hideOutlines(); 2315 } 2316 } 2317 2318 public void onDragExit(DragObject d) { 2319 mDragHasEnteredWorkspace = false; 2320 doDragExit(d); 2321 } 2322 2323 public DropTarget getDropTargetDelegate(DragObject d) { 2324 return null; 2325 } 2326 2327 /** 2328 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 2329 * in the returned structure related to the widgets that match the drop (or a null list if it is 2330 * a shortcut drop). If the drop is not accepted then a null structure is returned. 2331 */ 2332 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 2333 final LauncherModel model = mLauncher.getModel(); 2334 final ClipDescription desc = event.getClipDescription(); 2335 final int mimeTypeCount = desc.getMimeTypeCount(); 2336 for (int i = 0; i < mimeTypeCount; ++i) { 2337 final String mimeType = desc.getMimeType(i); 2338 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 2339 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 2340 } else { 2341 final List<WidgetMimeTypeHandlerData> widgets = 2342 model.resolveWidgetsForMimeType(mContext, mimeType); 2343 if (widgets.size() > 0) { 2344 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 2345 } 2346 } 2347 } 2348 return null; 2349 } 2350 2351 /** 2352 * Global drag and drop handler 2353 */ 2354 @Override 2355 public boolean onDragEvent(DragEvent event) { 2356 final ClipDescription desc = event.getClipDescription(); 2357 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 2358 final int[] pos = new int[2]; 2359 layout.getLocationOnScreen(pos); 2360 // We need to offset the drag coordinates to layout coordinate space 2361 final int x = (int) event.getX() - pos[0]; 2362 final int y = (int) event.getY() - pos[1]; 2363 2364 switch (event.getAction()) { 2365 case DragEvent.ACTION_DRAG_STARTED: { 2366 // Validate this drag 2367 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2368 if (test != null) { 2369 boolean isShortcut = (test.second == null); 2370 if (isShortcut) { 2371 // Check if we have enough space on this screen to add a new shortcut 2372 if (!layout.findCellForSpan(pos, 1, 1)) { 2373 mLauncher.showOutOfSpaceMessage(); 2374 return false; 2375 } 2376 } 2377 } else { 2378 // Show error message if we couldn't accept any of the items 2379 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 2380 Toast.LENGTH_SHORT).show(); 2381 return false; 2382 } 2383 2384 // Create the drag outline 2385 // We need to add extra padding to the bitmap to make room for the glow effect 2386 final Canvas canvas = new Canvas(); 2387 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2388 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 2389 2390 // Show the current page outlines to indicate that we can accept this drop 2391 showOutlines(); 2392 layout.onDragEnter(); 2393 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1, null, null); 2394 2395 return true; 2396 } 2397 case DragEvent.ACTION_DRAG_LOCATION: 2398 // Visualize the drop location 2399 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1, null, null); 2400 return true; 2401 case DragEvent.ACTION_DROP: { 2402 // Try and add any shortcuts 2403 final LauncherModel model = mLauncher.getModel(); 2404 final ClipData data = event.getClipData(); 2405 2406 // We assume that the mime types are ordered in descending importance of 2407 // representation. So we enumerate the list of mime types and alert the 2408 // user if any widgets can handle the drop. Only the most preferred 2409 // representation will be handled. 2410 pos[0] = x; 2411 pos[1] = y; 2412 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2413 if (test != null) { 2414 final int index = test.first; 2415 final List<WidgetMimeTypeHandlerData> widgets = test.second; 2416 final boolean isShortcut = (widgets == null); 2417 final String mimeType = desc.getMimeType(index); 2418 if (isShortcut) { 2419 final Intent intent = data.getItemAt(index).getIntent(); 2420 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 2421 if (info != null) { 2422 onDropExternal(new int[] { x, y }, info, layout, false); 2423 } 2424 } else { 2425 if (widgets.size() == 1) { 2426 // If there is only one item, then go ahead and add and configure 2427 // that widget 2428 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 2429 final PendingAddWidgetInfo createInfo = 2430 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 2431 mLauncher.addAppWidgetFromDrop(createInfo, 2432 LauncherSettings.Favorites.CONTAINER_DESKTOP, mCurrentPage, null, pos); 2433 } else { 2434 // Show the widget picker dialog if there is more than one widget 2435 // that can handle this data type 2436 final InstallWidgetReceiver.WidgetListAdapter adapter = 2437 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 2438 data, widgets, layout, mCurrentPage, pos); 2439 final AlertDialog.Builder builder = 2440 new AlertDialog.Builder(mContext); 2441 builder.setAdapter(adapter, adapter); 2442 builder.setCancelable(true); 2443 builder.setTitle(mContext.getString( 2444 R.string.external_drop_widget_pick_title)); 2445 builder.setIcon(R.drawable.ic_no_applications); 2446 builder.show(); 2447 } 2448 } 2449 } 2450 return true; 2451 } 2452 case DragEvent.ACTION_DRAG_ENDED: 2453 // Hide the page outlines after the drop 2454 layout.onDragExit(); 2455 hideOutlines(); 2456 return true; 2457 } 2458 return super.onDragEvent(event); 2459 } 2460 2461 /* 2462 * 2463 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2464 * coordinate space. The argument xy is modified with the return result. 2465 * 2466 */ 2467 void mapPointFromSelfToChild(View v, float[] xy) { 2468 mapPointFromSelfToChild(v, xy, null); 2469 } 2470 2471 /* 2472 * 2473 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2474 * coordinate space. The argument xy is modified with the return result. 2475 * 2476 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2477 * computing it itself; we use this to avoid redundant matrix inversions in 2478 * findMatchingPageForDragOver 2479 * 2480 */ 2481 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2482 if (cachedInverseMatrix == null) { 2483 v.getMatrix().invert(mTempInverseMatrix); 2484 cachedInverseMatrix = mTempInverseMatrix; 2485 } 2486 int scrollX = mScrollX; 2487 if (mNextPage != INVALID_PAGE) { 2488 scrollX = mScroller.getFinalX(); 2489 } 2490 xy[0] = xy[0] + scrollX - v.getLeft(); 2491 xy[1] = xy[1] + mScrollY - v.getTop(); 2492 cachedInverseMatrix.mapPoints(xy); 2493 } 2494 2495 /* 2496 * Maps a point from the Workspace's coordinate system to another sibling view's. (Workspace 2497 * covers the full screen) 2498 */ 2499 void mapPointFromSelfToSibling(View v, float[] xy) { 2500 xy[0] = xy[0] - v.getLeft(); 2501 xy[1] = xy[1] - v.getTop(); 2502 } 2503 2504 /* 2505 * 2506 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2507 * the parent View's coordinate space. The argument xy is modified with the return result. 2508 * 2509 */ 2510 void mapPointFromChildToSelf(View v, float[] xy) { 2511 v.getMatrix().mapPoints(xy); 2512 int scrollX = mScrollX; 2513 if (mNextPage != INVALID_PAGE) { 2514 scrollX = mScroller.getFinalX(); 2515 } 2516 xy[0] -= (scrollX - v.getLeft()); 2517 xy[1] -= (mScrollY - v.getTop()); 2518 } 2519 2520 static private float squaredDistance(float[] point1, float[] point2) { 2521 float distanceX = point1[0] - point2[0]; 2522 float distanceY = point2[1] - point2[1]; 2523 return distanceX * distanceX + distanceY * distanceY; 2524 } 2525 2526 /* 2527 * 2528 * Returns true if the passed CellLayout cl overlaps with dragView 2529 * 2530 */ 2531 boolean overlaps(CellLayout cl, DragView dragView, 2532 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2533 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2534 final float[] draggedItemTopLeft = mTempDragCoordinates; 2535 draggedItemTopLeft[0] = dragViewX; 2536 draggedItemTopLeft[1] = dragViewY; 2537 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2538 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2539 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2540 2541 // Transform the dragged item's top left coordinates 2542 // to the CellLayout's local coordinates 2543 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2544 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2545 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2546 2547 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2548 // Transform the dragged item's bottom right coordinates 2549 // to the CellLayout's local coordinates 2550 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2551 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2552 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2553 2554 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2555 float overlap = (overlapRegionRight - overlapRegionLeft) * 2556 (overlapRegionBottom - overlapRegionTop); 2557 if (overlap > 0) { 2558 return true; 2559 } 2560 } 2561 } 2562 return false; 2563 } 2564 2565 /* 2566 * 2567 * This method returns the CellLayout that is currently being dragged to. In order to drag 2568 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2569 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2570 * 2571 * Return null if no CellLayout is currently being dragged over 2572 * 2573 */ 2574 private CellLayout findMatchingPageForDragOver( 2575 DragView dragView, float originX, float originY, boolean exact) { 2576 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2577 // with the item being dragged and then choose the one that's closest to the touch point 2578 final int screenCount = getChildCount(); 2579 CellLayout bestMatchingScreen = null; 2580 float smallestDistSoFar = Float.MAX_VALUE; 2581 2582 for (int i = 0; i < screenCount; i++) { 2583 CellLayout cl = (CellLayout) getChildAt(i); 2584 2585 final float[] touchXy = {originX, originY}; 2586 // Transform the touch coordinates to the CellLayout's local coordinates 2587 // If the touch point is within the bounds of the cell layout, we can return immediately 2588 cl.getMatrix().invert(mTempInverseMatrix); 2589 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2590 2591 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2592 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2593 return cl; 2594 } 2595 2596 if (!exact) { 2597 // Get the center of the cell layout in screen coordinates 2598 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2599 cellLayoutCenter[0] = cl.getWidth()/2; 2600 cellLayoutCenter[1] = cl.getHeight()/2; 2601 mapPointFromChildToSelf(cl, cellLayoutCenter); 2602 2603 touchXy[0] = originX; 2604 touchXy[1] = originY; 2605 2606 // Calculate the distance between the center of the CellLayout 2607 // and the touch point 2608 float dist = squaredDistance(touchXy, cellLayoutCenter); 2609 2610 if (dist < smallestDistSoFar) { 2611 smallestDistSoFar = dist; 2612 bestMatchingScreen = cl; 2613 } 2614 } 2615 } 2616 return bestMatchingScreen; 2617 } 2618 2619 // This is used to compute the visual center of the dragView. This point is then 2620 // used to visualize drop locations and determine where to drop an item. The idea is that 2621 // the visual center represents the user's interpretation of where the item is, and hence 2622 // is the appropriate point to use when determining drop location. 2623 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2624 DragView dragView, float[] recycle) { 2625 float res[]; 2626 if (recycle == null) { 2627 res = new float[2]; 2628 } else { 2629 res = recycle; 2630 } 2631 2632 // First off, the drag view has been shifted in a way that is not represented in the 2633 // x and y values or the x/yOffsets. Here we account for that shift. 2634 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2635 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2636 2637 // These represent the visual top and left of drag view if a dragRect was provided. 2638 // If a dragRect was not provided, then they correspond to the actual view left and 2639 // top, as the dragRect is in that case taken to be the entire dragView. 2640 // R.dimen.dragViewOffsetY. 2641 int left = x - xOffset; 2642 int top = y - yOffset; 2643 2644 // In order to find the visual center, we shift by half the dragRect 2645 res[0] = left + dragView.getDragRegion().width() / 2; 2646 res[1] = top + dragView.getDragRegion().height() / 2; 2647 2648 return res; 2649 } 2650 2651 private boolean isDragWidget(DragObject d) { 2652 return (d.dragInfo instanceof LauncherAppWidgetInfo || 2653 d.dragInfo instanceof PendingAddWidgetInfo); 2654 } 2655 private boolean isExternalDragWidget(DragObject d) { 2656 return d.dragSource != this && isDragWidget(d); 2657 } 2658 2659 public void onDragOver(DragObject d) { 2660 // Skip drag over events while we are dragging over side pages 2661 if (mInScrollArea) return; 2662 if (mIsSwitchingState) return; 2663 2664 Rect r = new Rect(); 2665 CellLayout layout = null; 2666 ItemInfo item = (ItemInfo) d.dragInfo; 2667 2668 // Ensure that we have proper spans for the item that we are dropping 2669 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2670 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2671 d.dragView, mDragViewVisualCenter); 2672 2673 // Identify whether we have dragged over a side page 2674 if (isSmall()) { 2675 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 2676 mLauncher.getHotseat().getHitRect(r); 2677 if (r.contains(d.x, d.y)) { 2678 layout = mLauncher.getHotseat().getLayout(); 2679 } 2680 } 2681 if (layout == null) { 2682 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false); 2683 } 2684 if (layout != mDragTargetLayout) { 2685 // Cancel all intermediate folder states 2686 cleanupFolderCreation(d); 2687 2688 if (mDragTargetLayout != null) { 2689 mDragTargetLayout.setIsDragOverlapping(false); 2690 mDragTargetLayout.onDragExit(); 2691 } 2692 mDragTargetLayout = layout; 2693 if (mDragTargetLayout != null) { 2694 mDragTargetLayout.setIsDragOverlapping(true); 2695 mDragTargetLayout.onDragEnter(); 2696 } else { 2697 mLastDragOverView = null; 2698 } 2699 2700 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 2701 if (isInSpringLoadedMode) { 2702 if (mLauncher.isHotseatLayout(layout)) { 2703 mSpringLoadedDragController.cancel(); 2704 } else { 2705 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2706 } 2707 } 2708 } 2709 } else { 2710 // Test to see if we are over the hotseat otherwise just use the current page 2711 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 2712 mLauncher.getHotseat().getHitRect(r); 2713 if (r.contains(d.x, d.y)) { 2714 layout = mLauncher.getHotseat().getLayout(); 2715 } 2716 } 2717 if (layout == null) { 2718 layout = getCurrentDropLayout(); 2719 } 2720 if (layout != mDragTargetLayout) { 2721 if (mDragTargetLayout != null) { 2722 mDragTargetLayout.setIsDragOverlapping(false); 2723 mDragTargetLayout.onDragExit(); 2724 } 2725 mDragTargetLayout = layout; 2726 mDragTargetLayout.setIsDragOverlapping(true); 2727 mDragTargetLayout.onDragEnter(); 2728 } 2729 } 2730 2731 // Handle the drag over 2732 if (mDragTargetLayout != null) { 2733 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2734 2735 // We want the point to be mapped to the dragTarget. 2736 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2737 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2738 } else { 2739 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2740 } 2741 ItemInfo info = (ItemInfo) d.dragInfo; 2742 2743 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2744 (int) mDragViewVisualCenter[1], 1, 1, mDragTargetLayout, mTargetCell); 2745 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2746 mTargetCell[1]); 2747 2748 boolean userFolderPending = willCreateUserFolder(info, mDragTargetLayout, 2749 mTargetCell, false); 2750 boolean isOverFolder = dragOverView instanceof FolderIcon; 2751 if (dragOverView != mLastDragOverView) { 2752 cancelFolderCreation(); 2753 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2754 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2755 } 2756 } 2757 2758 if (userFolderPending && dragOverView != mLastDragOverView) { 2759 mFolderCreationAlarm.setOnAlarmListener(new 2760 FolderCreationAlarmListener(mDragTargetLayout, mTargetCell[0], mTargetCell[1])); 2761 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2762 } 2763 2764 if (dragOverView != mLastDragOverView && isOverFolder) { 2765 ((FolderIcon) dragOverView).onDragEnter(d.dragInfo); 2766 if (mDragTargetLayout != null) { 2767 mDragTargetLayout.clearDragOutlines(); 2768 } 2769 } 2770 mLastDragOverView = dragOverView; 2771 2772 if (!mCreateUserFolderOnDrop && !isOverFolder) { 2773 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2774 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2775 item.spanX, item.spanY, d.dragView.getDragVisualizeOffset(), 2776 d.dragView.getDragRegion()); 2777 } 2778 } 2779 } 2780 2781 private void cleanupFolderCreation(DragObject d) { 2782 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2783 mDragFolderRingAnimator.animateToNaturalState(); 2784 } 2785 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2786 if (d != null) { 2787 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2788 } 2789 } 2790 mFolderCreationAlarm.cancelAlarm(); 2791 } 2792 2793 private void cancelFolderCreation() { 2794 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2795 mDragFolderRingAnimator.animateToNaturalState(); 2796 } 2797 mCreateUserFolderOnDrop = false; 2798 mFolderCreationAlarm.cancelAlarm(); 2799 } 2800 2801 class FolderCreationAlarmListener implements OnAlarmListener { 2802 CellLayout layout; 2803 int cellX; 2804 int cellY; 2805 2806 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 2807 this.layout = layout; 2808 this.cellX = cellX; 2809 this.cellY = cellY; 2810 } 2811 2812 public void onAlarm(Alarm alarm) { 2813 if (mDragFolderRingAnimator == null) { 2814 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 2815 } 2816 mDragFolderRingAnimator.setCell(cellX, cellY); 2817 mDragFolderRingAnimator.setCellLayout(layout); 2818 mDragFolderRingAnimator.animateToAcceptState(); 2819 layout.showFolderAccept(mDragFolderRingAnimator); 2820 layout.clearDragOutlines(); 2821 mCreateUserFolderOnDrop = true; 2822 } 2823 } 2824 2825 @Override 2826 public void getHitRect(Rect outRect) { 2827 // We want the workspace to have the whole area of the display (it will find the correct 2828 // cell layout to drop to in the existing drag/drop logic. 2829 outRect.set(0, 0, mDisplayWidth, mDisplayHeight); 2830 } 2831 2832 /** 2833 * Add the item specified by dragInfo to the given layout. 2834 * @return true if successful 2835 */ 2836 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2837 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2838 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2839 return true; 2840 } 2841 mLauncher.showOutOfSpaceMessage(); 2842 return false; 2843 } 2844 2845 private void onDropExternal(int[] touchXY, Object dragInfo, 2846 CellLayout cellLayout, boolean insertAtFirst) { 2847 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 2848 } 2849 2850 /** 2851 * Drop an item that didn't originate on one of the workspace screens. 2852 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2853 * come from another app altogether. 2854 * 2855 * NOTE: This can also be called when we are outside of a drag event, when we want 2856 * to add an item to one of the workspace screens. 2857 */ 2858 private void onDropExternal(final int[] touchXY, final Object dragInfo, 2859 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 2860 final Runnable exitSpringLoadedRunnable = new Runnable() { 2861 @Override 2862 public void run() { 2863 mLauncher.exitSpringLoadedDragModeDelayed(true, false); 2864 } 2865 }; 2866 2867 ItemInfo info = (ItemInfo) dragInfo; 2868 int spanX = info.spanX; 2869 int spanY = info.spanY; 2870 if (mDragInfo != null) { 2871 spanX = mDragInfo.spanX; 2872 spanY = mDragInfo.spanY; 2873 } 2874 2875 final long container = mLauncher.isHotseatLayout(cellLayout) ? 2876 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2877 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2878 final int screen = indexOfChild(cellLayout); 2879 if (!mLauncher.isHotseatLayout(cellLayout) && screen != mCurrentPage 2880 && mState != State.SPRING_LOADED) { 2881 snapToPage(screen); 2882 } 2883 2884 if (info instanceof PendingAddItemInfo) { 2885 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 2886 2887 boolean findNearestVacantCell = true; 2888 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 2889 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 2890 cellLayout, mTargetCell); 2891 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, 2892 true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 2893 mDragTargetLayout, mTargetCell)) { 2894 findNearestVacantCell = false; 2895 } 2896 } 2897 if (findNearestVacantCell) { 2898 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], spanX, spanY, null, 2899 cellLayout, mTargetCell); 2900 } 2901 2902 Runnable onAnimationCompleteRunnable = new Runnable() { 2903 @Override 2904 public void run() { 2905 // When dragging and dropping from customization tray, we deal with creating 2906 // widgets/shortcuts/folders in a slightly different way 2907 switch (pendingInfo.itemType) { 2908 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 2909 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, 2910 container, screen, mTargetCell, null); 2911 break; 2912 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2913 mLauncher.processShortcutFromDrop(pendingInfo.componentName, 2914 container, screen, mTargetCell, null); 2915 break; 2916 default: 2917 throw new IllegalStateException("Unknown item type: " + 2918 pendingInfo.itemType); 2919 } 2920 cellLayout.onDragExit(); 2921 } 2922 }; 2923 2924 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 2925 // location and size on the home screen. 2926 RectF r = estimateItemPosition(cellLayout, pendingInfo, 2927 mTargetCell[0], mTargetCell[1], spanX, spanY); 2928 int loc[] = new int[2]; 2929 loc[0] = (int) r.left; 2930 loc[1] = (int) r.top; 2931 setFinalTransitionTransform(cellLayout); 2932 float cellLayoutScale = 2933 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(cellLayout, loc); 2934 resetTransitionTransform(cellLayout); 2935 2936 float dragViewScale = Math.min(r.width() / d.dragView.getMeasuredWidth(), 2937 r.height() / d.dragView.getMeasuredHeight()); 2938 // The animation will scale the dragView about its center, so we need to center about 2939 // the final location. 2940 loc[0] -= (d.dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 2941 loc[1] -= (d.dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 2942 2943 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, loc, 2944 dragViewScale * cellLayoutScale, onAnimationCompleteRunnable); 2945 } else { 2946 // This is for other drag/drop cases, like dragging from All Apps 2947 View view = null; 2948 2949 switch (info.itemType) { 2950 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 2951 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2952 if (info.container == NO_ID && info instanceof ApplicationInfo) { 2953 // Came from all apps -- make a copy 2954 info = new ShortcutInfo((ApplicationInfo) info); 2955 } 2956 view = mLauncher.createShortcut(R.layout.application, cellLayout, 2957 (ShortcutInfo) info); 2958 break; 2959 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 2960 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 2961 (FolderInfo) info, mIconCache); 2962 break; 2963 default: 2964 throw new IllegalStateException("Unknown item type: " + info.itemType); 2965 } 2966 2967 // First we find the cell nearest to point at which the item is 2968 // dropped, without any consideration to whether there is an item there. 2969 if (touchXY != null) { 2970 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 2971 cellLayout, mTargetCell); 2972 d.postAnimationRunnable = exitSpringLoadedRunnable; 2973 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, true, 2974 d.dragView, d.postAnimationRunnable)) { 2975 return; 2976 } 2977 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, d, true)) { 2978 return; 2979 } 2980 } 2981 2982 if (touchXY != null) { 2983 // when dragging and dropping, just find the closest free spot 2984 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], 1, 1, null, 2985 cellLayout, mTargetCell); 2986 } else { 2987 cellLayout.findCellForSpan(mTargetCell, 1, 1); 2988 } 2989 addInScreen(view, container, screen, mTargetCell[0], mTargetCell[1], info.spanX, 2990 info.spanY, insertAtFirst); 2991 cellLayout.onDropChild(view); 2992 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2993 cellLayout.getChildrenLayout().measureChild(view); 2994 2995 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, 2996 lp.cellX, lp.cellY); 2997 2998 if (d.dragView != null) { 2999 // We wrap the animation call in the temporary set and reset of the current 3000 // cellLayout to its final transform -- this means we animate the drag view to 3001 // the correct final location. 3002 setFinalTransitionTransform(cellLayout); 3003 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 3004 exitSpringLoadedRunnable); 3005 resetTransitionTransform(cellLayout); 3006 } 3007 } 3008 } 3009 3010 public void setFinalTransitionTransform(CellLayout layout) { 3011 if (isSwitchingState()) { 3012 int index = indexOfChild(layout); 3013 mCurrentScaleX = layout.getScaleX(); 3014 mCurrentScaleY = layout.getScaleY(); 3015 mCurrentTranslationX = layout.getTranslationX(); 3016 mCurrentTranslationY = layout.getTranslationY(); 3017 mCurrentRotationY = layout.getRotationY(); 3018 layout.setScaleX(mNewScaleXs[index]); 3019 layout.setScaleY(mNewScaleYs[index]); 3020 layout.setTranslationX(mNewTranslationXs[index]); 3021 layout.setTranslationY(mNewTranslationYs[index]); 3022 layout.setRotationY(mNewRotationYs[index]); 3023 } 3024 } 3025 public void resetTransitionTransform(CellLayout layout) { 3026 if (isSwitchingState()) { 3027 mCurrentScaleX = layout.getScaleX(); 3028 mCurrentScaleY = layout.getScaleY(); 3029 mCurrentTranslationX = layout.getTranslationX(); 3030 mCurrentTranslationY = layout.getTranslationY(); 3031 mCurrentRotationY = layout.getRotationY(); 3032 layout.setScaleX(mCurrentScaleX); 3033 layout.setScaleY(mCurrentScaleY); 3034 layout.setTranslationX(mCurrentTranslationX); 3035 layout.setTranslationY(mCurrentTranslationY); 3036 layout.setRotationY(mCurrentRotationY); 3037 } 3038 } 3039 3040 /** 3041 * Return the current {@link CellLayout}, correctly picking the destination 3042 * screen while a scroll is in progress. 3043 */ 3044 public CellLayout getCurrentDropLayout() { 3045 return (CellLayout) getChildAt(mNextPage == INVALID_PAGE ? mCurrentPage : mNextPage); 3046 } 3047 3048 /** 3049 * Return the current CellInfo describing our current drag; this method exists 3050 * so that Launcher can sync this object with the correct info when the activity is created/ 3051 * destroyed 3052 * 3053 */ 3054 public CellLayout.CellInfo getDragInfo() { 3055 return mDragInfo; 3056 } 3057 3058 /** 3059 * Calculate the nearest cell where the given object would be dropped. 3060 * 3061 * pixelX and pixelY should be in the coordinate system of layout 3062 */ 3063 private int[] findNearestVacantArea(int pixelX, int pixelY, 3064 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 3065 return layout.findNearestVacantArea( 3066 pixelX, pixelY, spanX, spanY, ignoreView, recycle); 3067 } 3068 3069 /** 3070 * Calculate the nearest cell where the given object would be dropped. 3071 * 3072 * pixelX and pixelY should be in the coordinate system of layout 3073 */ 3074 private int[] findNearestArea(int pixelX, int pixelY, 3075 int spanX, int spanY, CellLayout layout, int[] recycle) { 3076 return layout.findNearestArea( 3077 pixelX, pixelY, spanX, spanY, recycle); 3078 } 3079 3080 void setup(DragController dragController) { 3081 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3082 mDragController = dragController; 3083 3084 // hardware layers on children are enabled on startup, but should be disabled until 3085 // needed 3086 updateChildrenLayersEnabled(); 3087 setWallpaperDimension(); 3088 } 3089 3090 /** 3091 * Called at the end of a drag which originated on the workspace. 3092 */ 3093 public void onDropCompleted(View target, DragObject d, boolean success) { 3094 if (success) { 3095 if (target != this) { 3096 if (mDragInfo != null) { 3097 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 3098 if (mDragInfo.cell instanceof DropTarget) { 3099 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 3100 } 3101 } 3102 } 3103 } else if (mDragInfo != null) { 3104 // NOTE: When 'success' is true, onDragExit is called by the DragController before 3105 // calling onDropCompleted(). We call it ourselves here, but maybe this should be 3106 // moved into DragController.cancelDrag(). 3107 doDragExit(null); 3108 CellLayout cellLayout; 3109 if (mLauncher.isHotseatLayout(target)) { 3110 cellLayout = mLauncher.getHotseat().getLayout(); 3111 } else { 3112 cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3113 } 3114 cellLayout.onDropChild(mDragInfo.cell); 3115 } 3116 if (d.cancelled && mDragInfo.cell != null) { 3117 mDragInfo.cell.setVisibility(VISIBLE); 3118 } 3119 mDragOutline = null; 3120 mDragInfo = null; 3121 } 3122 3123 public boolean isDropEnabled() { 3124 return true; 3125 } 3126 3127 @Override 3128 protected void onRestoreInstanceState(Parcelable state) { 3129 super.onRestoreInstanceState(state); 3130 Launcher.setScreen(mCurrentPage); 3131 } 3132 3133 @Override 3134 public void scrollLeft() { 3135 if (!isSmall() && !mIsSwitchingState) { 3136 super.scrollLeft(); 3137 } 3138 Folder openFolder = getOpenFolder(); 3139 if (openFolder != null) { 3140 openFolder.completeDragExit(); 3141 } 3142 } 3143 3144 @Override 3145 public void scrollRight() { 3146 if (!isSmall() && !mIsSwitchingState) { 3147 super.scrollRight(); 3148 } 3149 Folder openFolder = getOpenFolder(); 3150 if (openFolder != null) { 3151 openFolder.completeDragExit(); 3152 } 3153 } 3154 3155 @Override 3156 public boolean onEnterScrollArea(int x, int y, int direction) { 3157 // Ignore the scroll area if we are dragging over the hot seat 3158 if (mLauncher.getHotseat() != null) { 3159 Rect r = new Rect(); 3160 mLauncher.getHotseat().getHitRect(r); 3161 if (r.contains(x, y)) { 3162 return false; 3163 } 3164 } 3165 3166 boolean result = false; 3167 if (!isSmall() && !mIsSwitchingState) { 3168 mInScrollArea = true; 3169 3170 final int page = (mNextPage != INVALID_PAGE ? mNextPage : mCurrentPage) + 3171 (direction == DragController.SCROLL_LEFT ? -1 : 1); 3172 cancelFolderCreation(); 3173 3174 if (0 <= page && page < getChildCount()) { 3175 CellLayout layout = (CellLayout) getChildAt(page); 3176 // Exit the current layout and mark the overlapping layout 3177 if (mDragTargetLayout != null) { 3178 mDragTargetLayout.setIsDragOverlapping(false); 3179 mDragTargetLayout.onDragExit(); 3180 } 3181 mDragTargetLayout = layout; 3182 mDragTargetLayout.setIsDragOverlapping(true); 3183 3184 // Workspace is responsible for drawing the edge glow on adjacent pages, 3185 // so we need to redraw the workspace when this may have changed. 3186 invalidate(); 3187 result = true; 3188 } 3189 } 3190 return result; 3191 } 3192 3193 @Override 3194 public boolean onExitScrollArea() { 3195 boolean result = false; 3196 if (mInScrollArea) { 3197 if (mDragTargetLayout != null) { 3198 mDragTargetLayout.setIsDragOverlapping(false); 3199 // Workspace is responsible for drawing the edge glow on adjacent pages, 3200 // so we need to redraw the workspace when this may have changed. 3201 invalidate(); 3202 } 3203 if (mDragTargetLayout != null && mDragHasEnteredWorkspace) { 3204 // Unmark the overlapping layout and re-enter the current layout 3205 mDragTargetLayout = getCurrentDropLayout(); 3206 mDragTargetLayout.onDragEnter(); 3207 } 3208 result = true; 3209 mInScrollArea = false; 3210 } 3211 return result; 3212 } 3213 3214 private void onResetScrollArea() { 3215 if (mDragTargetLayout != null) { 3216 // Unmark the overlapping layout 3217 mDragTargetLayout.setIsDragOverlapping(false); 3218 3219 // Workspace is responsible for drawing the edge glow on adjacent pages, 3220 // so we need to redraw the workspace when this may have changed. 3221 invalidate(); 3222 } 3223 mInScrollArea = false; 3224 } 3225 3226 /** 3227 * Returns a specific CellLayout 3228 */ 3229 CellLayout getParentCellLayoutForView(View v) { 3230 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3231 for (CellLayout layout : layouts) { 3232 if (layout.getChildrenLayout().indexOfChild(v) > -1) { 3233 return layout; 3234 } 3235 } 3236 return null; 3237 } 3238 3239 /** 3240 * Returns a list of all the CellLayouts in the workspace. 3241 */ 3242 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3243 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3244 int screenCount = getChildCount(); 3245 for (int screen = 0; screen < screenCount; screen++) { 3246 layouts.add(((CellLayout) getChildAt(screen))); 3247 } 3248 if (mLauncher.getHotseat() != null) { 3249 layouts.add(mLauncher.getHotseat().getLayout()); 3250 } 3251 return layouts; 3252 } 3253 3254 /** 3255 * We should only use this to search for specific children. Do not use this method to modify 3256 * CellLayoutChildren directly. 3257 */ 3258 ArrayList<CellLayoutChildren> getWorkspaceAndHotseatCellLayoutChildren() { 3259 ArrayList<CellLayoutChildren> childrenLayouts = new ArrayList<CellLayoutChildren>(); 3260 int screenCount = getChildCount(); 3261 for (int screen = 0; screen < screenCount; screen++) { 3262 childrenLayouts.add(((CellLayout) getChildAt(screen)).getChildrenLayout()); 3263 } 3264 if (mLauncher.getHotseat() != null) { 3265 childrenLayouts.add(mLauncher.getHotseat().getLayout().getChildrenLayout()); 3266 } 3267 return childrenLayouts; 3268 } 3269 3270 public Folder getFolderForTag(Object tag) { 3271 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3272 for (CellLayoutChildren layout: childrenLayouts) { 3273 int count = layout.getChildCount(); 3274 for (int i = 0; i < count; i++) { 3275 View child = layout.getChildAt(i); 3276 if (child instanceof Folder) { 3277 Folder f = (Folder) child; 3278 if (f.getInfo() == tag && f.getInfo().opened) { 3279 return f; 3280 } 3281 } 3282 } 3283 } 3284 return null; 3285 } 3286 3287 public View getViewForTag(Object tag) { 3288 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3289 for (CellLayoutChildren layout: childrenLayouts) { 3290 int count = layout.getChildCount(); 3291 for (int i = 0; i < count; i++) { 3292 View child = layout.getChildAt(i); 3293 if (child.getTag() == tag) { 3294 return child; 3295 } 3296 } 3297 } 3298 return null; 3299 } 3300 3301 void clearDropTargets() { 3302 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3303 for (CellLayoutChildren layout: childrenLayouts) { 3304 int childCount = layout.getChildCount(); 3305 for (int j = 0; j < childCount; j++) { 3306 View v = layout.getChildAt(j); 3307 if (v instanceof DropTarget) { 3308 mDragController.removeDropTarget((DropTarget) v); 3309 } 3310 } 3311 } 3312 } 3313 3314 void removeItems(final ArrayList<ApplicationInfo> apps) { 3315 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3316 3317 final HashSet<String> packageNames = new HashSet<String>(); 3318 final int appCount = apps.size(); 3319 for (int i = 0; i < appCount; i++) { 3320 packageNames.add(apps.get(i).componentName.getPackageName()); 3321 } 3322 3323 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3324 for (final CellLayout layoutParent: cellLayouts) { 3325 final ViewGroup layout = layoutParent.getChildrenLayout(); 3326 3327 // Avoid ANRs by treating each screen separately 3328 post(new Runnable() { 3329 public void run() { 3330 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3331 childrenToRemove.clear(); 3332 3333 int childCount = layout.getChildCount(); 3334 for (int j = 0; j < childCount; j++) { 3335 final View view = layout.getChildAt(j); 3336 Object tag = view.getTag(); 3337 3338 if (tag instanceof ShortcutInfo) { 3339 final ShortcutInfo info = (ShortcutInfo) tag; 3340 final Intent intent = info.intent; 3341 final ComponentName name = intent.getComponent(); 3342 3343 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3344 for (String packageName: packageNames) { 3345 if (packageName.equals(name.getPackageName())) { 3346 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3347 childrenToRemove.add(view); 3348 } 3349 } 3350 } 3351 } else if (tag instanceof FolderInfo) { 3352 final FolderInfo info = (FolderInfo) tag; 3353 final ArrayList<ShortcutInfo> contents = info.contents; 3354 final int contentsCount = contents.size(); 3355 final ArrayList<ShortcutInfo> appsToRemoveFromFolder = 3356 new ArrayList<ShortcutInfo>(); 3357 3358 for (int k = 0; k < contentsCount; k++) { 3359 final ShortcutInfo appInfo = contents.get(k); 3360 final Intent intent = appInfo.intent; 3361 final ComponentName name = intent.getComponent(); 3362 3363 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3364 for (String packageName: packageNames) { 3365 if (packageName.equals(name.getPackageName())) { 3366 appsToRemoveFromFolder.add(appInfo); 3367 } 3368 } 3369 } 3370 } 3371 for (ShortcutInfo item: appsToRemoveFromFolder) { 3372 info.remove(item); 3373 LauncherModel.deleteItemFromDatabase(mLauncher, item); 3374 } 3375 } else if (tag instanceof LauncherAppWidgetInfo) { 3376 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3377 final AppWidgetProviderInfo provider = 3378 widgets.getAppWidgetInfo(info.appWidgetId); 3379 if (provider != null) { 3380 for (String packageName: packageNames) { 3381 if (packageName.equals(provider.provider.getPackageName())) { 3382 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3383 childrenToRemove.add(view); 3384 } 3385 } 3386 } 3387 } 3388 } 3389 3390 childCount = childrenToRemove.size(); 3391 for (int j = 0; j < childCount; j++) { 3392 View child = childrenToRemove.get(j); 3393 // Note: We can not remove the view directly from CellLayoutChildren as this 3394 // does not re-mark the spaces as unoccupied. 3395 layoutParent.removeViewInLayout(child); 3396 if (child instanceof DropTarget) { 3397 mDragController.removeDropTarget((DropTarget)child); 3398 } 3399 } 3400 3401 if (childCount > 0) { 3402 layout.requestLayout(); 3403 layout.invalidate(); 3404 } 3405 } 3406 }); 3407 } 3408 } 3409 3410 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3411 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3412 for (CellLayoutChildren layout: childrenLayouts) { 3413 int childCount = layout.getChildCount(); 3414 for (int j = 0; j < childCount; j++) { 3415 final View view = layout.getChildAt(j); 3416 Object tag = view.getTag(); 3417 if (tag instanceof ShortcutInfo) { 3418 ShortcutInfo info = (ShortcutInfo)tag; 3419 // We need to check for ACTION_MAIN otherwise getComponent() might 3420 // return null for some shortcuts (for instance, for shortcuts to 3421 // web pages.) 3422 final Intent intent = info.intent; 3423 final ComponentName name = intent.getComponent(); 3424 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3425 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3426 final int appCount = apps.size(); 3427 for (int k = 0; k < appCount; k++) { 3428 ApplicationInfo app = apps.get(k); 3429 if (app.componentName.equals(name)) { 3430 info.setIcon(mIconCache.getIcon(info.intent)); 3431 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 3432 new FastBitmapDrawable(info.getIcon(mIconCache)), 3433 null, null); 3434 } 3435 } 3436 } 3437 } 3438 } 3439 } 3440 } 3441 3442 void moveToDefaultScreen(boolean animate) { 3443 if (!isSmall()) { 3444 if (animate) { 3445 snapToPage(mDefaultPage); 3446 } else { 3447 setCurrentPage(mDefaultPage); 3448 } 3449 } 3450 getChildAt(mDefaultPage).requestFocus(); 3451 } 3452 3453 @Override 3454 public void syncPages() { 3455 } 3456 3457 @Override 3458 public void syncPageItems(int page, boolean immediate) { 3459 } 3460 3461 @Override 3462 protected String getCurrentPageDescription() { 3463 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 3464 return String.format(mContext.getString(R.string.workspace_scroll_format), 3465 page + 1, getChildCount()); 3466 } 3467 3468 public void getLocationInDragLayer(int[] loc) { 3469 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 3470 } 3471 3472 void setFadeForOverScroll(float fade) { 3473 if (!isScrollingIndicatorEnabled()) return; 3474 3475 mOverscrollFade = fade; 3476 float reducedFade = 0.5f + 0.5f * (1 - fade); 3477 final ViewGroup parent = (ViewGroup) getParent(); 3478 final ImageView qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3479 final ImageView dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3480 final View scrollIndicator = getScrollingIndicator(); 3481 3482 cancelScrollingIndicatorAnimations(); 3483 if (qsbDivider != null) qsbDivider.setAlpha(reducedFade); 3484 if (dockDivider != null) dockDivider.setAlpha(reducedFade); 3485 scrollIndicator.setAlpha(1 - fade); 3486 } 3487} 3488