Workspace.java revision 9433fa7ebad74320e39bfac6161a68bc850fe161
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; 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 // Hide the outlines, as long as we're not dragging 693 if (!mDragController.dragging()) { 694 // Only hide page outlines as we pan if we are on large screen 695 if (LauncherApplication.isScreenLarge()) { 696 hideOutlines(); 697 } 698 } 699 mOverScrollMaxBackgroundAlpha = 0.0f; 700 mOverScrollPageIndex = -1; 701 702 if (mDelayedResizeRunnable != null) { 703 mDelayedResizeRunnable.run(); 704 mDelayedResizeRunnable = null; 705 } 706 } 707 708 @Override 709 protected void notifyPageSwitchListener() { 710 super.notifyPageSwitchListener(); 711 Launcher.setScreen(mCurrentPage); 712 }; 713 714 // As a ratio of screen height, the total distance we want the parallax effect to span 715 // horizontally 716 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 717 float aspectRatio = width / (float) height; 718 719 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 720 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 721 // We will use these two data points to extrapolate how much the wallpaper parallax effect 722 // to span (ie travel) at any aspect ratio: 723 724 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 725 final float ASPECT_RATIO_PORTRAIT = 10/16f; 726 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 727 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 728 729 // To find out the desired width at different aspect ratios, we use the following two 730 // formulas, where the coefficient on x is the aspect ratio (width/height): 731 // (16/10)x + y = 1.5 732 // (10/16)x + y = 1.2 733 // We solve for x and y and end up with a final formula: 734 final float x = 735 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 736 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 737 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 738 return x * aspectRatio + y; 739 } 740 741 // The range of scroll values for Workspace 742 private int getScrollRange() { 743 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 744 } 745 746 protected void setWallpaperDimension() { 747 DisplayMetrics displayMetrics = new DisplayMetrics(); 748 mLauncher.getWindowManager().getDefaultDisplay().getRealMetrics(displayMetrics); 749 final int maxDim = Math.max(displayMetrics.widthPixels, displayMetrics.heightPixels); 750 final int minDim = Math.min(displayMetrics.widthPixels, displayMetrics.heightPixels); 751 752 // We need to ensure that there is enough extra space in the wallpaper for the intended 753 // parallax effects 754 if (LauncherApplication.isScreenLarge()) { 755 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 756 mWallpaperHeight = maxDim; 757 } else { 758 mWallpaperWidth = Math.max((int) (minDim * WALLPAPER_SCREENS_SPAN), maxDim); 759 mWallpaperHeight = maxDim; 760 } 761 new Thread("setWallpaperDimension") { 762 public void run() { 763 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 764 } 765 }.start(); 766 } 767 768 public void setVerticalWallpaperOffset(float offset) { 769 mWallpaperOffset.setFinalY(offset); 770 } 771 public float getVerticalWallpaperOffset() { 772 return mWallpaperOffset.getCurrY(); 773 } 774 public void setHorizontalWallpaperOffset(float offset) { 775 mWallpaperOffset.setFinalX(offset); 776 } 777 public float getHorizontalWallpaperOffset() { 778 return mWallpaperOffset.getCurrX(); 779 } 780 781 private float wallpaperOffsetForCurrentScroll() { 782 // The wallpaper travel width is how far, from left to right, the wallpaper will move 783 // at this orientation. On tablets in portrait mode we don't move all the way to the 784 // edges of the wallpaper, or otherwise the parallax effect would be too strong. 785 int wallpaperTravelWidth = mWallpaperWidth; 786 if (LauncherApplication.isScreenLarge()) { 787 wallpaperTravelWidth = mWallpaperTravelWidth; 788 } 789 790 // Set wallpaper offset steps (1 / (number of screens - 1)) 791 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f); 792 793 // For the purposes of computing the scrollRange and overScrollOffset, we assume 794 // that mLayoutScale is 1. This means that when we're in spring-loaded mode, 795 // there's no discrepancy between the wallpaper offset for a given page. 796 float layoutScale = mLayoutScale; 797 mLayoutScale = 1f; 798 int scrollRange = getScrollRange(); 799 800 // Again, we adjust the wallpaper offset to be consistent between values of mLayoutScale 801 float adjustedScrollX = Math.max(0, Math.min(mScrollX, mMaxScrollX)); 802 adjustedScrollX *= mWallpaperScrollRatio; 803 mLayoutScale = layoutScale; 804 805 float scrollProgress = 806 adjustedScrollX / (float) scrollRange; 807 float offsetInDips = wallpaperTravelWidth * scrollProgress + 808 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 809 float offset = offsetInDips / (float) mWallpaperWidth; 810 return offset; 811 } 812 private void syncWallpaperOffsetWithScroll() { 813 final boolean enableWallpaperEffects = isHardwareAccelerated(); 814 if (enableWallpaperEffects) { 815 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 816 } 817 } 818 819 public void updateWallpaperOffsetImmediately() { 820 mUpdateWallpaperOffsetImmediately = true; 821 } 822 823 private void updateWallpaperOffsets() { 824 boolean updateNow = false; 825 boolean keepUpdating = true; 826 if (mUpdateWallpaperOffsetImmediately) { 827 updateNow = true; 828 keepUpdating = false; 829 mWallpaperOffset.jumpToFinal(); 830 mUpdateWallpaperOffsetImmediately = false; 831 } else { 832 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 833 } 834 if (updateNow) { 835 if (mWindowToken != null) { 836 mWallpaperManager.setWallpaperOffsets(mWindowToken, 837 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 838 } 839 } 840 if (keepUpdating) { 841 invalidate(); 842 } 843 } 844 845 @Override 846 protected void updateCurrentPageScroll() { 847 super.updateCurrentPageScroll(); 848 computeWallpaperScrollRatio(mCurrentPage); 849 } 850 851 @Override 852 protected void snapToPage(int whichPage) { 853 super.snapToPage(whichPage); 854 computeWallpaperScrollRatio(whichPage); 855 } 856 857 private void computeWallpaperScrollRatio(int page) { 858 // Here, we determine what the desired scroll would be with and without a layout scale, 859 // and compute a ratio between the two. This allows us to adjust the wallpaper offset 860 // as though there is no layout scale. 861 float layoutScale = mLayoutScale; 862 int scaled = getChildOffset(page) - getRelativeChildOffset(page); 863 mLayoutScale = 1.0f; 864 float unscaled = getChildOffset(page) - getRelativeChildOffset(page); 865 mLayoutScale = layoutScale; 866 if (scaled > 0) { 867 mWallpaperScrollRatio = (1.0f * unscaled) / scaled; 868 } else { 869 mWallpaperScrollRatio = 1f; 870 } 871 } 872 873 class WallpaperOffsetInterpolator { 874 float mFinalHorizontalWallpaperOffset = 0.0f; 875 float mFinalVerticalWallpaperOffset = 0.5f; 876 float mHorizontalWallpaperOffset = 0.0f; 877 float mVerticalWallpaperOffset = 0.5f; 878 long mLastWallpaperOffsetUpdateTime; 879 boolean mIsMovingFast; 880 boolean mOverrideHorizontalCatchupConstant; 881 float mHorizontalCatchupConstant = 0.35f; 882 float mVerticalCatchupConstant = 0.35f; 883 884 public WallpaperOffsetInterpolator() { 885 } 886 887 public void setOverrideHorizontalCatchupConstant(boolean override) { 888 mOverrideHorizontalCatchupConstant = override; 889 } 890 891 public void setHorizontalCatchupConstant(float f) { 892 mHorizontalCatchupConstant = f; 893 } 894 895 public void setVerticalCatchupConstant(float f) { 896 mVerticalCatchupConstant = f; 897 } 898 899 public boolean computeScrollOffset() { 900 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 901 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 902 mIsMovingFast = false; 903 return false; 904 } 905 boolean isLandscape = mDisplayWidth > mDisplayHeight; 906 907 long currentTime = System.currentTimeMillis(); 908 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 909 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 910 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 911 912 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 913 if (!mIsMovingFast && xdiff > 0.07) { 914 mIsMovingFast = true; 915 } 916 917 float fractionToCatchUpIn1MsHorizontal; 918 if (mOverrideHorizontalCatchupConstant) { 919 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 920 } else if (mIsMovingFast) { 921 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 922 } else { 923 // slow 924 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 925 } 926 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 927 928 fractionToCatchUpIn1MsHorizontal /= 33f; 929 fractionToCatchUpIn1MsVertical /= 33f; 930 931 final float UPDATE_THRESHOLD = 0.00001f; 932 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 933 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 934 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 935 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 936 937 // Don't have any lag between workspace and wallpaper on non-large devices 938 if (!LauncherApplication.isScreenLarge() || jumpToFinalValue) { 939 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 940 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 941 } else { 942 float percentToCatchUpVertical = 943 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 944 float percentToCatchUpHorizontal = 945 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 946 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 947 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 948 } 949 950 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 951 return true; 952 } 953 954 public float getCurrX() { 955 return mHorizontalWallpaperOffset; 956 } 957 958 public float getFinalX() { 959 return mFinalHorizontalWallpaperOffset; 960 } 961 962 public float getCurrY() { 963 return mVerticalWallpaperOffset; 964 } 965 966 public float getFinalY() { 967 return mFinalVerticalWallpaperOffset; 968 } 969 970 public void setFinalX(float x) { 971 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 972 } 973 974 public void setFinalY(float y) { 975 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 976 } 977 978 public void jumpToFinal() { 979 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 980 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 981 } 982 } 983 984 @Override 985 public void computeScroll() { 986 super.computeScroll(); 987 syncWallpaperOffsetWithScroll(); 988 } 989 990 void showOutlines() { 991 if (!isSmall() && !mIsSwitchingState) { 992 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 993 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 994 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 995 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 996 mChildrenOutlineFadeInAnimation.start(); 997 } 998 } 999 1000 void hideOutlines() { 1001 if (!isSmall() && !mIsSwitchingState) { 1002 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1003 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1004 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 1005 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 1006 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 1007 mChildrenOutlineFadeOutAnimation.start(); 1008 } 1009 } 1010 1011 public void showOutlinesTemporarily() { 1012 if (!mIsPageMoving && !isTouchActive()) { 1013 snapToPage(mCurrentPage); 1014 } 1015 } 1016 1017 public void setChildrenOutlineAlpha(float alpha) { 1018 mChildrenOutlineAlpha = alpha; 1019 for (int i = 0; i < getChildCount(); i++) { 1020 CellLayout cl = (CellLayout) getChildAt(i); 1021 cl.setBackgroundAlpha(alpha); 1022 } 1023 } 1024 1025 public float getChildrenOutlineAlpha() { 1026 return mChildrenOutlineAlpha; 1027 } 1028 1029 void disableBackground() { 1030 mDrawBackground = false; 1031 } 1032 void enableBackground() { 1033 mDrawBackground = true; 1034 } 1035 1036 private void animateBackgroundGradient(float finalAlpha, boolean animated) { 1037 if (mBackground == null) return; 1038 if (mBackgroundFadeInAnimation != null) { 1039 mBackgroundFadeInAnimation.cancel(); 1040 mBackgroundFadeInAnimation = null; 1041 } 1042 if (mBackgroundFadeOutAnimation != null) { 1043 mBackgroundFadeOutAnimation.cancel(); 1044 mBackgroundFadeOutAnimation = null; 1045 } 1046 float startAlpha = getBackgroundAlpha(); 1047 if (finalAlpha != startAlpha) { 1048 if (animated) { 1049 mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(startAlpha, finalAlpha); 1050 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1051 public void onAnimationUpdate(ValueAnimator animation) { 1052 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1053 } 1054 }); 1055 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1056 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1057 mBackgroundFadeOutAnimation.start(); 1058 } else { 1059 setBackgroundAlpha(finalAlpha); 1060 } 1061 } 1062 } 1063 1064 public void setBackgroundAlpha(float alpha) { 1065 if (alpha != mBackgroundAlpha) { 1066 mBackgroundAlpha = alpha; 1067 invalidate(); 1068 } 1069 } 1070 1071 public float getBackgroundAlpha() { 1072 return mBackgroundAlpha; 1073 } 1074 1075 /** 1076 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 1077 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 1078 * as being larger. This method computes what offset the rotated view should be translated 1079 * in order to minimize this perceived gap. 1080 * @param degrees Angle of the view 1081 * @param width Width of the view 1082 * @param height Height of the view 1083 * @return Offset to be used in a View.setTranslationX() call 1084 */ 1085 private float getOffsetXForRotation(float degrees, int width, int height) { 1086 mMatrix.reset(); 1087 mCamera.save(); 1088 mCamera.rotateY(Math.abs(degrees)); 1089 mCamera.getMatrix(mMatrix); 1090 mCamera.restore(); 1091 1092 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 1093 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 1094 mTempFloat2[0] = width; 1095 mTempFloat2[1] = height; 1096 mMatrix.mapPoints(mTempFloat2); 1097 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 1098 } 1099 1100 float backgroundAlphaInterpolator(float r) { 1101 float pivotA = 0.1f; 1102 float pivotB = 0.4f; 1103 if (r < pivotA) { 1104 return 0; 1105 } else if (r > pivotB) { 1106 return 1.0f; 1107 } else { 1108 return (r - pivotA)/(pivotB - pivotA); 1109 } 1110 } 1111 1112 float overScrollBackgroundAlphaInterpolator(float r) { 1113 float threshold = 0.08f; 1114 1115 if (r > mOverScrollMaxBackgroundAlpha) { 1116 mOverScrollMaxBackgroundAlpha = r; 1117 } else if (r < mOverScrollMaxBackgroundAlpha) { 1118 r = mOverScrollMaxBackgroundAlpha; 1119 } 1120 1121 return Math.min(r / threshold, 1.0f); 1122 } 1123 1124 private void screenScrolledLargeUI(int screenCenter) { 1125 if (isSwitchingState()) return; 1126 boolean isInOverscroll = false; 1127 for (int i = 0; i < getChildCount(); i++) { 1128 CellLayout cl = (CellLayout) getChildAt(i); 1129 if (cl != null) { 1130 float scrollProgress = getScrollProgress(screenCenter, cl, i); 1131 float rotation = WORKSPACE_ROTATION * scrollProgress; 1132 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1133 1134 // If the current page (i) is being over scrolled, we use a different 1135 // set of rules for setting the background alpha multiplier. 1136 if (!isSmall()) { 1137 if ((mOverScrollX < 0 && i == 0) || (mOverScrollX > mMaxScrollX && 1138 i == getChildCount() -1)) { 1139 isInOverscroll = true; 1140 rotation *= -1; 1141 cl.setBackgroundAlphaMultiplier( 1142 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 1143 mOverScrollPageIndex = i; 1144 cl.setOverScrollAmount(Math.abs(scrollProgress), i == 0); 1145 cl.setPivotX(cl.getMeasuredWidth() * (i == 0 ? 0.75f : 0.25f)); 1146 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1147 cl.setOverscrollTransformsDirty(true); 1148 } else if (mOverScrollPageIndex != i) { 1149 cl.setBackgroundAlphaMultiplier( 1150 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1151 } 1152 } 1153 cl.setTranslationX(translationX); 1154 cl.setRotationY(rotation); 1155 if (mFadeInAdjacentScreens && !isSmall()) { 1156 float alpha = 1 - Math.abs(scrollProgress); 1157 cl.setAlpha(alpha); 1158 } 1159 } 1160 } 1161 if (!isSwitchingState() && !isInOverscroll) { 1162 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1163 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1164 } 1165 invalidate(); 1166 } 1167 1168 private void screenScrolledStandardUI(int screenCenter) { 1169 if (mOverScrollX < 0 || mOverScrollX > mMaxScrollX) { 1170 int index = mOverScrollX < 0 ? 0 : getChildCount() - 1; 1171 CellLayout cl = (CellLayout) getChildAt(index); 1172 float scrollProgress = getScrollProgress(screenCenter, cl, index); 1173 cl.setOverScrollAmount(Math.abs(scrollProgress), index == 0); 1174 float rotation = - WORKSPACE_OVERSCROLL_ROTATION * scrollProgress; 1175 cl.setCameraDistance(mDensity * CAMERA_DISTANCE); 1176 cl.setPivotX(cl.getMeasuredWidth() * (index == 0 ? 0.75f : 0.25f)); 1177 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1178 cl.setRotationY(rotation); 1179 cl.setOverscrollTransformsDirty(true); 1180 setFadeForOverScroll(Math.abs(scrollProgress)); 1181 } else { 1182 if (mOverscrollFade != 0) { 1183 setFadeForOverScroll(0); 1184 } 1185 // We don't want to mess with the translations during transitions 1186 if (!isSwitchingState()) { 1187 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1188 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1189 } 1190 } 1191 } 1192 1193 @Override 1194 protected void screenScrolled(int screenCenter) { 1195 if (LauncherApplication.isScreenLarge()) { 1196 // We don't call super.screenScrolled() here because we handle the adjacent pages alpha 1197 // ourselves (for efficiency), and there are no scrolling indicators to update. 1198 screenScrolledLargeUI(screenCenter); 1199 } else { 1200 super.screenScrolled(screenCenter); 1201 screenScrolledStandardUI(screenCenter); 1202 } 1203 } 1204 1205 @Override 1206 protected void overScroll(float amount) { 1207 if (LauncherApplication.isScreenLarge()) { 1208 dampedOverScroll(amount); 1209 } else { 1210 acceleratedOverScroll(amount); 1211 } 1212 } 1213 1214 protected void onAttachedToWindow() { 1215 super.onAttachedToWindow(); 1216 mWindowToken = getWindowToken(); 1217 computeScroll(); 1218 mDragController.setWindowToken(mWindowToken); 1219 } 1220 1221 protected void onDetachedFromWindow() { 1222 mWindowToken = null; 1223 } 1224 1225 @Override 1226 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1227 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1228 mUpdateWallpaperOffsetImmediately = true; 1229 } 1230 super.onLayout(changed, left, top, right, bottom); 1231 } 1232 1233 @Override 1234 protected void onDraw(Canvas canvas) { 1235 updateWallpaperOffsets(); 1236 1237 // Draw the background gradient if necessary 1238 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1239 int alpha = (int) (mBackgroundAlpha * 255); 1240 mBackground.setAlpha(alpha); 1241 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1242 getMeasuredHeight()); 1243 mBackground.draw(canvas); 1244 } 1245 1246 super.onDraw(canvas); 1247 } 1248 1249 boolean isDrawingBackgroundGradient() { 1250 return (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground); 1251 } 1252 1253 @Override 1254 protected void dispatchDraw(Canvas canvas) { 1255 super.dispatchDraw(canvas); 1256 1257 if (mInScrollArea && !LauncherApplication.isScreenLarge()) { 1258 final int width = getWidth(); 1259 final int height = getHeight(); 1260 final int pageHeight = getChildAt(0).getHeight(); 1261 1262 // Set the height of the outline to be the height of the page 1263 final int offset = (height - pageHeight - mPaddingTop - mPaddingBottom) / 2; 1264 final int paddingTop = mPaddingTop + offset; 1265 final int paddingBottom = mPaddingBottom + offset; 1266 1267 final CellLayout leftPage = (CellLayout) getChildAt(mCurrentPage - 1); 1268 final CellLayout rightPage = (CellLayout) getChildAt(mCurrentPage + 1); 1269 1270 if (leftPage != null && leftPage.getIsDragOverlapping()) { 1271 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left_holo); 1272 d.setBounds(mScrollX, paddingTop, mScrollX + d.getIntrinsicWidth(), 1273 height - paddingBottom); 1274 d.draw(canvas); 1275 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 1276 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right_holo); 1277 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), paddingTop, mScrollX + width, 1278 height - paddingBottom); 1279 d.draw(canvas); 1280 } 1281 } 1282 } 1283 1284 @Override 1285 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1286 if (!mLauncher.isAllAppsVisible()) { 1287 final Folder openFolder = getOpenFolder(); 1288 if (openFolder != null) { 1289 return openFolder.requestFocus(direction, previouslyFocusedRect); 1290 } else { 1291 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1292 } 1293 } 1294 return false; 1295 } 1296 1297 @Override 1298 public int getDescendantFocusability() { 1299 if (isSmall()) { 1300 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1301 } 1302 return super.getDescendantFocusability(); 1303 } 1304 1305 @Override 1306 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1307 if (!mLauncher.isAllAppsVisible()) { 1308 final Folder openFolder = getOpenFolder(); 1309 if (openFolder != null) { 1310 openFolder.addFocusables(views, direction); 1311 } else { 1312 super.addFocusables(views, direction, focusableMode); 1313 } 1314 } 1315 } 1316 1317 public boolean isSmall() { 1318 return mState == State.SMALL || mState == State.SPRING_LOADED; 1319 } 1320 1321 void enableChildrenCache(int fromPage, int toPage) { 1322 if (fromPage > toPage) { 1323 final int temp = fromPage; 1324 fromPage = toPage; 1325 toPage = temp; 1326 } 1327 1328 final int screenCount = getChildCount(); 1329 1330 fromPage = Math.max(fromPage, 0); 1331 toPage = Math.min(toPage, screenCount - 1); 1332 1333 for (int i = fromPage; i <= toPage; i++) { 1334 final CellLayout layout = (CellLayout) getChildAt(i); 1335 layout.setChildrenDrawnWithCacheEnabled(true); 1336 layout.setChildrenDrawingCacheEnabled(true); 1337 } 1338 } 1339 1340 void clearChildrenCache() { 1341 final int screenCount = getChildCount(); 1342 for (int i = 0; i < screenCount; i++) { 1343 final CellLayout layout = (CellLayout) getChildAt(i); 1344 layout.setChildrenDrawnWithCacheEnabled(false); 1345 // In software mode, we don't want the items to continue to be drawn into bitmaps 1346 if (!isHardwareAccelerated()) { 1347 layout.setChildrenDrawingCacheEnabled(false); 1348 } 1349 } 1350 } 1351 1352 private void updateChildrenLayersEnabled() { 1353 boolean small = isSmall() || mIsSwitchingState; 1354 boolean dragging = mAnimatingViewIntoPlace || mIsDragOccuring; 1355 boolean enableChildrenLayers = small || dragging || isPageMoving(); 1356 1357 if (enableChildrenLayers != mChildrenLayersEnabled) { 1358 mChildrenLayersEnabled = enableChildrenLayers; 1359 for (int i = 0; i < getPageCount(); i++) { 1360 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(mChildrenLayersEnabled); 1361 } 1362 } 1363 } 1364 1365 protected void onWallpaperTap(MotionEvent ev) { 1366 final int[] position = mTempCell; 1367 getLocationOnScreen(position); 1368 1369 int pointerIndex = ev.getActionIndex(); 1370 position[0] += (int) ev.getX(pointerIndex); 1371 position[1] += (int) ev.getY(pointerIndex); 1372 1373 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1374 ev.getAction() == MotionEvent.ACTION_UP 1375 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1376 position[0], position[1], 0, null); 1377 } 1378 1379 /* 1380 * This interpolator emulates the rate at which the perceived scale of an object changes 1381 * as its distance from a camera increases. When this interpolator is applied to a scale 1382 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1383 * from the camera. 1384 */ 1385 static class ZInterpolator implements TimeInterpolator { 1386 private float focalLength; 1387 1388 public ZInterpolator(float foc) { 1389 focalLength = foc; 1390 } 1391 1392 public float getInterpolation(float input) { 1393 return (1.0f - focalLength / (focalLength + input)) / 1394 (1.0f - focalLength / (focalLength + 1.0f)); 1395 } 1396 } 1397 1398 /* 1399 * The exact reverse of ZInterpolator. 1400 */ 1401 static class InverseZInterpolator implements TimeInterpolator { 1402 private ZInterpolator zInterpolator; 1403 public InverseZInterpolator(float foc) { 1404 zInterpolator = new ZInterpolator(foc); 1405 } 1406 public float getInterpolation(float input) { 1407 return 1 - zInterpolator.getInterpolation(1 - input); 1408 } 1409 } 1410 1411 /* 1412 * ZInterpolator compounded with an ease-out. 1413 */ 1414 static class ZoomOutInterpolator implements TimeInterpolator { 1415 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(0.75f); 1416 private final ZInterpolator zInterpolator = new ZInterpolator(0.13f); 1417 1418 public float getInterpolation(float input) { 1419 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1420 } 1421 } 1422 1423 /* 1424 * InvereZInterpolator compounded with an ease-out. 1425 */ 1426 static class ZoomInInterpolator implements TimeInterpolator { 1427 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1428 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1429 1430 public float getInterpolation(float input) { 1431 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1432 } 1433 } 1434 1435 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1436 1437 /* 1438 * 1439 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1440 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1441 * 1442 * These methods mark the appropriate pages as accepting drops (which alters their visual 1443 * appearance). 1444 * 1445 */ 1446 public void onDragStartedWithItem(View v) { 1447 final Canvas canvas = new Canvas(); 1448 1449 // We need to add extra padding to the bitmap to make room for the glow effect 1450 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1451 1452 // The outline is used to visualize where the item will land if dropped 1453 mDragOutline = createDragOutline(v, canvas, bitmapPadding); 1454 } 1455 1456 public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, Paint alphaClipPaint) { 1457 final Canvas canvas = new Canvas(); 1458 1459 // We need to add extra padding to the bitmap to make room for the glow effect 1460 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1461 1462 int[] size = estimateItemSize(info.spanX, info.spanY, info, false); 1463 1464 // The outline is used to visualize where the item will land if dropped 1465 mDragOutline = createDragOutline(b, canvas, bitmapPadding, size[0], size[1], alphaClipPaint); 1466 } 1467 1468 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1469 // never dragged over 1470 public void onDragStopped(boolean success) { 1471 // In the success case, DragController has already called onDragExit() 1472 if (!success) { 1473 doDragExit(null); 1474 } 1475 } 1476 1477 public void exitWidgetResizeMode() { 1478 DragLayer dragLayer = mLauncher.getDragLayer(); 1479 dragLayer.clearAllResizeFrames(); 1480 } 1481 1482 private void initAnimationArrays() { 1483 final int childCount = getChildCount(); 1484 if (mOldTranslationXs != null) return; 1485 mOldTranslationXs = new float[childCount]; 1486 mOldTranslationYs = new float[childCount]; 1487 mOldScaleXs = new float[childCount]; 1488 mOldScaleYs = new float[childCount]; 1489 mOldBackgroundAlphas = new float[childCount]; 1490 mOldBackgroundAlphaMultipliers = new float[childCount]; 1491 mOldAlphas = new float[childCount]; 1492 mOldRotationYs = new float[childCount]; 1493 mNewTranslationXs = new float[childCount]; 1494 mNewTranslationYs = new float[childCount]; 1495 mNewScaleXs = new float[childCount]; 1496 mNewScaleYs = new float[childCount]; 1497 mNewBackgroundAlphas = new float[childCount]; 1498 mNewBackgroundAlphaMultipliers = new float[childCount]; 1499 mNewAlphas = new float[childCount]; 1500 mNewRotationYs = new float[childCount]; 1501 } 1502 1503 Animator getChangeStateAnimation(final State state, boolean animated) { 1504 return getChangeStateAnimation(state, animated, 0); 1505 } 1506 1507 Animator getChangeStateAnimation(final State state, boolean animated, int delay) { 1508 if (mState == state) { 1509 return null; 1510 } 1511 1512 // Initialize animation arrays for the first time if necessary 1513 initAnimationArrays(); 1514 1515 AnimatorSet anim = animated ? new AnimatorSet() : null; 1516 1517 // Stop any scrolling, move to the current page right away 1518 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1519 1520 final State oldState = mState; 1521 final boolean oldStateIsNormal = (oldState == State.NORMAL); 1522 final boolean oldStateIsSmall = (oldState == State.SMALL); 1523 mState = state; 1524 final boolean stateIsNormal = (state == State.NORMAL); 1525 final boolean stateIsSpringLoaded = (state == State.SPRING_LOADED); 1526 final boolean stateIsSmall = (state == State.SMALL); 1527 float finalScaleFactor = 1.0f; 1528 float finalBackgroundAlpha = stateIsSpringLoaded ? 1.0f : 0f; 1529 float translationX = 0; 1530 float translationY = 0; 1531 boolean zoomIn = true; 1532 1533 if (state != State.NORMAL) { 1534 finalScaleFactor = mSpringLoadedShrinkFactor - (stateIsSmall ? 0.1f : 0); 1535 if (oldStateIsNormal && stateIsSmall) { 1536 zoomIn = false; 1537 setLayoutScale(finalScaleFactor); 1538 updateChildrenLayersEnabled(); 1539 } else { 1540 finalBackgroundAlpha = 1.0f; 1541 setLayoutScale(finalScaleFactor); 1542 } 1543 } else { 1544 setLayoutScale(1.0f); 1545 } 1546 1547 final int duration = zoomIn ? 1548 getResources().getInteger(R.integer.config_workspaceUnshrinkTime) : 1549 getResources().getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1550 for (int i = 0; i < getChildCount(); i++) { 1551 final CellLayout cl = (CellLayout) getChildAt(i); 1552 float rotation = 0f; 1553 float initialAlpha = cl.getAlpha(); 1554 float finalAlphaMultiplierValue = 1f; 1555 float finalAlpha = (!mFadeInAdjacentScreens || stateIsSpringLoaded || 1556 (i == mCurrentPage)) ? 1f : 0f; 1557 1558 // Determine the pages alpha during the state transition 1559 if ((oldStateIsSmall && stateIsNormal) || 1560 (oldStateIsNormal && stateIsSmall)) { 1561 // To/from workspace - only show the current page unless the transition is not 1562 // animated and the animation end callback below doesn't run 1563 if (i == mCurrentPage || !animated) { 1564 finalAlpha = 1f; 1565 finalAlphaMultiplierValue = 0f; 1566 } else { 1567 initialAlpha = 0f; 1568 finalAlpha = 0f; 1569 } 1570 } 1571 1572 // Update the rotation of the screen (don't apply rotation on Phone UI) 1573 if (LauncherApplication.isScreenLarge()) { 1574 if (i < mCurrentPage) { 1575 rotation = WORKSPACE_ROTATION; 1576 } else if (i > mCurrentPage) { 1577 rotation = -WORKSPACE_ROTATION; 1578 } 1579 } 1580 1581 // If the screen is not xlarge, then don't rotate the CellLayouts 1582 // NOTE: If we don't update the side pages alpha, then we should not hide the side 1583 // pages. see unshrink(). 1584 if (LauncherApplication.isScreenLarge()) { 1585 translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1586 } 1587 1588 mOldAlphas[i] = initialAlpha; 1589 mNewAlphas[i] = finalAlpha; 1590 if (animated) { 1591 mOldTranslationXs[i] = cl.getTranslationX(); 1592 mOldTranslationYs[i] = cl.getTranslationY(); 1593 mOldScaleXs[i] = cl.getScaleX(); 1594 mOldScaleYs[i] = cl.getScaleY(); 1595 mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1596 mOldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1597 mOldRotationYs[i] = cl.getRotationY(); 1598 1599 mNewTranslationXs[i] = translationX; 1600 mNewTranslationYs[i] = translationY; 1601 mNewScaleXs[i] = finalScaleFactor; 1602 mNewScaleYs[i] = finalScaleFactor; 1603 mNewBackgroundAlphas[i] = finalBackgroundAlpha; 1604 mNewBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1605 mNewRotationYs[i] = rotation; 1606 } else { 1607 cl.setTranslationX(translationX); 1608 cl.setTranslationY(translationY); 1609 cl.setScaleX(finalScaleFactor); 1610 cl.setScaleY(finalScaleFactor); 1611 cl.setBackgroundAlpha(finalBackgroundAlpha); 1612 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1613 cl.setAlpha(finalAlpha); 1614 cl.setRotationY(rotation); 1615 } 1616 } 1617 1618 if (animated) { 1619 for (int index = 0; index < getChildCount(); index++) { 1620 final int i = index; 1621 final CellLayout cl = (CellLayout) getChildAt(i); 1622 if (mOldAlphas[i] == 0 && mNewAlphas[i] == 0) { 1623 cl.setTranslationX(mNewTranslationXs[i]); 1624 cl.setTranslationY(mNewTranslationYs[i]); 1625 cl.setScaleX(mNewScaleXs[i]); 1626 cl.setScaleY(mNewScaleYs[i]); 1627 cl.setBackgroundAlpha(mNewBackgroundAlphas[i]); 1628 cl.setBackgroundAlphaMultiplier(mNewBackgroundAlphaMultipliers[i]); 1629 cl.setAlpha(mNewAlphas[i]); 1630 cl.setRotationY(mNewRotationYs[i]); 1631 } else { 1632 LauncherViewPropertyAnimator a = new LauncherViewPropertyAnimator(cl); 1633 a.translationX(mNewTranslationXs[i]) 1634 .translationY(mNewTranslationYs[i]) 1635 .scaleX(mNewScaleXs[i]) 1636 .scaleY(mNewScaleYs[i]) 1637 .setDuration(duration) 1638 .setInterpolator(mZoomInInterpolator); 1639 if (mOldAlphas[i] != mNewAlphas[i]) { 1640 a.alpha(mNewAlphas[i]); 1641 } 1642 anim.play(a); 1643 if (mOldRotationYs[i] != 0 || mNewRotationYs[i] != 0) { 1644 ValueAnimator rotate = ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1645 rotate.setInterpolator(new DecelerateInterpolator(2.0f)); 1646 rotate.addUpdateListener(new LauncherAnimatorUpdateListener() { 1647 public void onAnimationUpdate(float a, float b) { 1648 cl.setRotationY(a * 0f + b * 1f); 1649 } 1650 }); 1651 anim.play(rotate); 1652 } 1653 if (mOldBackgroundAlphas[i] != 0 || 1654 mNewBackgroundAlphas[i] != 0 || 1655 mOldBackgroundAlphaMultipliers[i] != 0 || 1656 mNewBackgroundAlphaMultipliers[i] != 0) { 1657 ValueAnimator bgAnim = ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1658 bgAnim.setInterpolator(mZoomInInterpolator); 1659 bgAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1660 public void onAnimationUpdate(float a, float b) { 1661 cl.setBackgroundAlpha( 1662 a * mOldBackgroundAlphas[i] + 1663 b * mNewBackgroundAlphas[i]); 1664 cl.setBackgroundAlphaMultiplier( 1665 a * mOldBackgroundAlphaMultipliers[i] + 1666 b * mNewBackgroundAlphaMultipliers[i]); 1667 } 1668 }); 1669 anim.play(bgAnim); 1670 } 1671 } 1672 } 1673 anim.setStartDelay(delay); 1674 } 1675 1676 if (stateIsSpringLoaded) { 1677 // Right now we're covered by Apps Customize 1678 // Show the background gradient immediately, so the gradient will 1679 // be showing once AppsCustomize disappears 1680 animateBackgroundGradient(getResources().getInteger( 1681 R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, false); 1682 } else { 1683 // Fade the background gradient away 1684 animateBackgroundGradient(0f, true); 1685 } 1686 return anim; 1687 } 1688 1689 @Override 1690 public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) { 1691 mIsSwitchingState = true; 1692 } 1693 1694 @Override 1695 public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) { 1696 mIsSwitchingState = false; 1697 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 1698 updateChildrenLayersEnabled(); 1699 // The code in getChangeStateAnimation to determine initialAlpha and finalAlpha will ensure 1700 // ensure that only the current page is visible during (and subsequently, after) the 1701 // transition animation. If fade adjacent pages is disabled, then re-enable the page 1702 // visibility after the transition animation. 1703 if (!mFadeInAdjacentScreens) { 1704 for (int i = 0; i < getChildCount(); i++) { 1705 final CellLayout cl = (CellLayout) getChildAt(i); 1706 cl.setAlpha(1f); 1707 } 1708 } 1709 } 1710 1711 @Override 1712 public View getContent() { 1713 return this; 1714 } 1715 1716 /** 1717 * Draw the View v into the given Canvas. 1718 * 1719 * @param v the view to draw 1720 * @param destCanvas the canvas to draw on 1721 * @param padding the horizontal and vertical padding to use when drawing 1722 */ 1723 private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { 1724 final Rect clipRect = mTempRect; 1725 v.getDrawingRect(clipRect); 1726 1727 boolean textVisible = false; 1728 1729 destCanvas.save(); 1730 if (v instanceof TextView && pruneToDrawable) { 1731 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1732 clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); 1733 destCanvas.translate(padding / 2, padding / 2); 1734 d.draw(destCanvas); 1735 } else { 1736 if (v instanceof FolderIcon) { 1737 // For FolderIcons the text can bleed into the icon area, and so we need to 1738 // hide the text completely (which can't be achieved by clipping). 1739 if (((FolderIcon) v).getTextVisible()) { 1740 ((FolderIcon) v).setTextVisible(false); 1741 textVisible = true; 1742 } 1743 } else if (v instanceof BubbleTextView) { 1744 final BubbleTextView tv = (BubbleTextView) v; 1745 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1746 tv.getLayout().getLineTop(0); 1747 } else if (v instanceof TextView) { 1748 final TextView tv = (TextView) v; 1749 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1750 tv.getLayout().getLineTop(0); 1751 } 1752 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1753 destCanvas.clipRect(clipRect, Op.REPLACE); 1754 v.draw(destCanvas); 1755 1756 // Restore text visibility of FolderIcon if necessary 1757 if (textVisible) { 1758 ((FolderIcon) v).setTextVisible(true); 1759 } 1760 } 1761 destCanvas.restore(); 1762 } 1763 1764 /** 1765 * Returns a new bitmap to show when the given View is being dragged around. 1766 * Responsibility for the bitmap is transferred to the caller. 1767 */ 1768 public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1769 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1770 Bitmap b; 1771 1772 if (v instanceof TextView) { 1773 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1774 b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, 1775 d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); 1776 } else { 1777 b = Bitmap.createBitmap( 1778 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1779 } 1780 1781 canvas.setBitmap(b); 1782 drawDragView(v, canvas, padding, true); 1783 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 1784 canvas.drawColor(mDragViewMultiplyColor, PorterDuff.Mode.MULTIPLY); 1785 canvas.setBitmap(null); 1786 1787 return b; 1788 } 1789 1790 /** 1791 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1792 * Responsibility for the bitmap is transferred to the caller. 1793 */ 1794 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1795 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1796 final Bitmap b = Bitmap.createBitmap( 1797 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1798 1799 canvas.setBitmap(b); 1800 drawDragView(v, canvas, padding, true); 1801 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1802 canvas.setBitmap(null); 1803 return b; 1804 } 1805 1806 /** 1807 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1808 * Responsibility for the bitmap is transferred to the caller. 1809 */ 1810 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h, 1811 Paint alphaClipPaint) { 1812 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1813 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1814 canvas.setBitmap(b); 1815 1816 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 1817 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 1818 (h - padding) / (float) orig.getHeight()); 1819 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 1820 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 1821 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 1822 1823 // center the image 1824 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 1825 1826 canvas.drawBitmap(orig, src, dst, null); 1827 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor, 1828 alphaClipPaint); 1829 canvas.setBitmap(null); 1830 1831 return b; 1832 } 1833 1834 /** 1835 * Creates a drag outline to represent a drop (that we don't have the actual information for 1836 * yet). May be changed in the future to alter the drop outline slightly depending on the 1837 * clip description mime data. 1838 */ 1839 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 1840 Resources r = getResources(); 1841 final int outlineColor = r.getColor(android.R.color.holo_blue_light); 1842 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 1843 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 1844 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 1845 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 1846 final Bitmap b = Bitmap.createBitmap( 1847 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 1848 1849 canvas.setBitmap(b); 1850 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 1851 rectRadius, rectRadius, mExternalDragOutlinePaint); 1852 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1853 canvas.setBitmap(null); 1854 return b; 1855 } 1856 1857 void startDrag(CellLayout.CellInfo cellInfo) { 1858 View child = cellInfo.cell; 1859 1860 // Make sure the drag was started by a long press as opposed to a long click. 1861 if (!child.isInTouchMode()) { 1862 return; 1863 } 1864 1865 mDragInfo = cellInfo; 1866 child.setVisibility(GONE); 1867 1868 child.clearFocus(); 1869 child.setPressed(false); 1870 1871 final Canvas canvas = new Canvas(); 1872 1873 // We need to add extra padding to the bitmap to make room for the glow effect 1874 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1875 1876 // The outline is used to visualize where the item will land if dropped 1877 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 1878 beginDragShared(child, this); 1879 } 1880 1881 public void beginDragShared(View child, DragSource source) { 1882 Resources r = getResources(); 1883 1884 // We need to add extra padding to the bitmap to make room for the glow effect 1885 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1886 1887 // The drag bitmap follows the touch point around on the screen 1888 final Bitmap b = createDragBitmap(child, new Canvas(), bitmapPadding); 1889 1890 final int bmpWidth = b.getWidth(); 1891 1892 mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 1893 final int dragLayerX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 1894 int dragLayerY = mTempXY[1] - bitmapPadding / 2; 1895 1896 Point dragVisualizeOffset = null; 1897 Rect dragRect = null; 1898 if (child instanceof BubbleTextView || child instanceof PagedViewIcon) { 1899 int iconSize = r.getDimensionPixelSize(R.dimen.app_icon_size); 1900 int iconPaddingTop = r.getDimensionPixelSize(R.dimen.app_icon_padding_top); 1901 int top = child.getPaddingTop(); 1902 int left = (bmpWidth - iconSize) / 2; 1903 int right = left + iconSize; 1904 int bottom = top + iconSize; 1905 dragLayerY += top; 1906 // Note: The drag region is used to calculate drag layer offsets, but the 1907 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 1908 dragVisualizeOffset = new Point(-bitmapPadding / 2, iconPaddingTop - bitmapPadding / 2); 1909 dragRect = new Rect(left, top, right, bottom); 1910 } else if (child instanceof FolderIcon) { 1911 int previewSize = r.getDimensionPixelSize(R.dimen.folder_preview_size); 1912 dragRect = new Rect(0, 0, child.getWidth(), previewSize); 1913 } 1914 1915 // Clear the pressed state if necessary 1916 if (child instanceof BubbleTextView) { 1917 BubbleTextView icon = (BubbleTextView) child; 1918 icon.clearPressedOrFocusedBackground(); 1919 } 1920 1921 mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 1922 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect); 1923 b.recycle(); 1924 } 1925 1926 void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, int screen, 1927 int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { 1928 View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); 1929 1930 final int[] cellXY = new int[2]; 1931 target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1932 addInScreen(view, container, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1933 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, cellXY[0], 1934 cellXY[1]); 1935 } 1936 1937 public boolean transitionStateShouldAllowDrop() { 1938 return (!isSwitchingState() || mTransitionProgress > 0.5f); 1939 } 1940 1941 /** 1942 * {@inheritDoc} 1943 */ 1944 public boolean acceptDrop(DragObject d) { 1945 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1946 if (d.dragSource != this) { 1947 // Don't accept the drop if we're not over a screen at time of drop 1948 if (mDragTargetLayout == null) { 1949 return false; 1950 } 1951 if (!transitionStateShouldAllowDrop()) return false; 1952 1953 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 1954 d.dragView, mDragViewVisualCenter); 1955 1956 // We want the point to be mapped to the dragTarget. 1957 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 1958 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 1959 } else { 1960 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 1961 } 1962 1963 int spanX = 1; 1964 int spanY = 1; 1965 View ignoreView = null; 1966 if (mDragInfo != null) { 1967 final CellLayout.CellInfo dragCellInfo = mDragInfo; 1968 spanX = dragCellInfo.spanX; 1969 spanY = dragCellInfo.spanY; 1970 ignoreView = dragCellInfo.cell; 1971 } else { 1972 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 1973 spanX = dragInfo.spanX; 1974 spanY = dragInfo.spanY; 1975 } 1976 1977 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 1978 (int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell); 1979 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, true)) { 1980 return true; 1981 } 1982 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, 1983 mTargetCell)) { 1984 return true; 1985 } 1986 1987 // Don't accept the drop if there's no room for the item 1988 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 1989 // Don't show the message if we are dropping on the AllApps button and the hotseat 1990 // is full 1991 if (mTargetCell != null && mLauncher.isHotseatLayout(mDragTargetLayout)) { 1992 Hotseat hotseat = mLauncher.getHotseat(); 1993 if (Hotseat.isAllAppsButtonRank( 1994 hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { 1995 return false; 1996 } 1997 } 1998 1999 mLauncher.showOutOfSpaceMessage(); 2000 return false; 2001 } 2002 } 2003 return true; 2004 } 2005 2006 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, 2007 boolean considerTimeout) { 2008 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2009 2010 boolean hasntMoved = false; 2011 if (mDragInfo != null) { 2012 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2013 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2014 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2015 } 2016 2017 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2018 return false; 2019 } 2020 2021 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2022 boolean willBecomeShortcut = 2023 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2024 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2025 2026 return (aboveShortcut && willBecomeShortcut); 2027 } 2028 2029 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell) { 2030 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2031 if (dropOverView instanceof FolderIcon) { 2032 FolderIcon fi = (FolderIcon) dropOverView; 2033 if (fi.acceptDrop(dragInfo)) { 2034 return true; 2035 } 2036 } 2037 return false; 2038 } 2039 2040 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2041 int[] targetCell, boolean external, DragView dragView, Runnable postAnimationRunnable) { 2042 View v = target.getChildAt(targetCell[0], targetCell[1]); 2043 boolean hasntMoved = false; 2044 if (mDragInfo != null) { 2045 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2046 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2047 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2048 } 2049 2050 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2051 mCreateUserFolderOnDrop = false; 2052 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 2053 2054 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2055 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2056 2057 if (aboveShortcut && willBecomeShortcut) { 2058 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2059 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2060 // if the drag started here, we need to remove it from the workspace 2061 if (!external) { 2062 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2063 } 2064 2065 Rect folderLocation = new Rect(); 2066 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2067 target.removeView(v); 2068 2069 FolderIcon fi = 2070 mLauncher.addFolder(target, container, screen, targetCell[0], targetCell[1]); 2071 destInfo.cellX = -1; 2072 destInfo.cellY = -1; 2073 sourceInfo.cellX = -1; 2074 sourceInfo.cellY = -1; 2075 2076 // If the dragView is null, we can't animate 2077 boolean animate = dragView != null; 2078 if (animate) { 2079 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2080 postAnimationRunnable); 2081 } else { 2082 fi.addItem(destInfo); 2083 fi.addItem(sourceInfo); 2084 } 2085 return true; 2086 } 2087 return false; 2088 } 2089 2090 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2091 DragObject d, boolean external) { 2092 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2093 if (dropOverView instanceof FolderIcon) { 2094 FolderIcon fi = (FolderIcon) dropOverView; 2095 if (fi.acceptDrop(d.dragInfo)) { 2096 fi.onDrop(d); 2097 2098 // if the drag started here, we need to remove it from the workspace 2099 if (!external) { 2100 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2101 } 2102 return true; 2103 } 2104 } 2105 return false; 2106 } 2107 2108 public void onDrop(DragObject d) { 2109 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2110 mDragViewVisualCenter); 2111 2112 // We want the point to be mapped to the dragTarget. 2113 if (mDragTargetLayout != null) { 2114 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2115 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2116 } else { 2117 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2118 } 2119 } 2120 2121 CellLayout dropTargetLayout = mDragTargetLayout; 2122 2123 int snapScreen = -1; 2124 if (d.dragSource != this) { 2125 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2126 (int) mDragViewVisualCenter[1] }; 2127 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2128 } else if (mDragInfo != null) { 2129 final View cell = mDragInfo.cell; 2130 2131 if (dropTargetLayout != null) { 2132 // Move internally 2133 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2134 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2135 long container = hasMovedIntoHotseat ? 2136 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2137 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2138 int screen = (mTargetCell[0] < 0) ? 2139 mDragInfo.screen : indexOfChild(dropTargetLayout); 2140 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2141 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2142 // First we find the cell nearest to point at which the item is 2143 // dropped, without any consideration to whether there is an item there. 2144 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2145 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2146 // If the item being dropped is a shortcut and the nearest drop 2147 // cell also contains a shortcut, then create a folder with the two shortcuts. 2148 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2149 dropTargetLayout, mTargetCell, false, d.dragView, null)) { 2150 return; 2151 } 2152 2153 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, d, false)) { 2154 return; 2155 } 2156 2157 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2158 // we need to find the nearest cell location that is vacant 2159 mTargetCell = findNearestVacantArea((int) mDragViewVisualCenter[0], 2160 (int) mDragViewVisualCenter[1], mDragInfo.spanX, mDragInfo.spanY, cell, 2161 dropTargetLayout, mTargetCell); 2162 2163 if (mCurrentPage != screen && !hasMovedIntoHotseat) { 2164 snapScreen = screen; 2165 snapToPage(screen); 2166 } 2167 2168 if (mTargetCell[0] >= 0 && mTargetCell[1] >= 0) { 2169 if (hasMovedLayouts) { 2170 // Reparent the view 2171 getParentCellLayoutForView(cell).removeView(cell); 2172 addInScreen(cell, container, screen, mTargetCell[0], mTargetCell[1], 2173 mDragInfo.spanX, mDragInfo.spanY); 2174 } 2175 2176 // update the item's position after drop 2177 final ItemInfo info = (ItemInfo) cell.getTag(); 2178 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2179 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 2180 lp.cellX = mTargetCell[0]; 2181 lp.cellY = mTargetCell[1]; 2182 cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screen, 2183 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2184 2185 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2186 cell instanceof LauncherAppWidgetHostView) { 2187 final CellLayout cellLayout = dropTargetLayout; 2188 // We post this call so that the widget has a chance to be placed 2189 // in its final location 2190 2191 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2192 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2193 if (pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2194 final Runnable resizeRunnable = new Runnable() { 2195 public void run() { 2196 DragLayer dragLayer = mLauncher.getDragLayer(); 2197 dragLayer.addResizeFrame(info, hostView, cellLayout); 2198 } 2199 }; 2200 post(new Runnable() { 2201 public void run() { 2202 if (!isPageMoving()) { 2203 resizeRunnable.run(); 2204 } else { 2205 mDelayedResizeRunnable = resizeRunnable; 2206 } 2207 } 2208 }); 2209 } 2210 } 2211 2212 LauncherModel.moveItemInDatabase(mLauncher, info, container, screen, lp.cellX, 2213 lp.cellY); 2214 } 2215 } 2216 2217 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2218 2219 // Prepare it to be animated into its new position 2220 // This must be called after the view has been re-parented 2221 final Runnable disableHardwareLayersRunnable = new Runnable() { 2222 @Override 2223 public void run() { 2224 mAnimatingViewIntoPlace = false; 2225 updateChildrenLayersEnabled(); 2226 } 2227 }; 2228 mAnimatingViewIntoPlace = true; 2229 if (d.dragView.hasDrawn()) { 2230 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2231 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2232 disableHardwareLayersRunnable, this); 2233 } else { 2234 cell.setVisibility(VISIBLE); 2235 } 2236 parent.onDropChild(cell); 2237 } 2238 } 2239 2240 public void setFinalScrollForPageChange(int screen) { 2241 if (screen >= 0) { 2242 mSavedScrollX = getScrollX(); 2243 CellLayout cl = (CellLayout) getChildAt(screen); 2244 mSavedTranslationX = cl.getTranslationX(); 2245 mSavedRotationY = cl.getRotationY(); 2246 final int newX = getChildOffset(screen) - getRelativeChildOffset(screen); 2247 setScrollX(newX); 2248 cl.setTranslationX(0f); 2249 cl.setRotationY(0f); 2250 } 2251 } 2252 2253 public void resetFinalScrollForPageChange(int screen) { 2254 if (screen >= 0) { 2255 CellLayout cl = (CellLayout) getChildAt(screen); 2256 setScrollX(mSavedScrollX); 2257 cl.setTranslationX(mSavedTranslationX); 2258 cl.setRotationY(mSavedRotationY); 2259 } 2260 } 2261 2262 public void getViewLocationRelativeToSelf(View v, int[] location) { 2263 getLocationInWindow(location); 2264 int x = location[0]; 2265 int y = location[1]; 2266 2267 v.getLocationInWindow(location); 2268 int vX = location[0]; 2269 int vY = location[1]; 2270 2271 location[0] = vX - x; 2272 location[1] = vY - y; 2273 } 2274 2275 public void onDragEnter(DragObject d) { 2276 mDragHasEnteredWorkspace = true; 2277 if (mDragTargetLayout != null) { 2278 mDragTargetLayout.setIsDragOverlapping(false); 2279 mDragTargetLayout.onDragExit(); 2280 } 2281 mDragTargetLayout = getCurrentDropLayout(); 2282 mDragTargetLayout.setIsDragOverlapping(true); 2283 mDragTargetLayout.onDragEnter(); 2284 2285 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2286 // don't need to show the outlines 2287 if (LauncherApplication.isScreenLarge()) { 2288 showOutlines(); 2289 } 2290 } 2291 2292 private void doDragExit(DragObject d) { 2293 // Clean up folders 2294 cleanupFolderCreation(d); 2295 2296 // Reset the scroll area and previous drag target 2297 onResetScrollArea(); 2298 2299 if (mDragTargetLayout != null) { 2300 mDragTargetLayout.setIsDragOverlapping(false); 2301 mDragTargetLayout.onDragExit(); 2302 } 2303 mLastDragOverView = null; 2304 mSpringLoadedDragController.cancel(); 2305 2306 if (!mIsPageMoving) { 2307 hideOutlines(); 2308 } 2309 } 2310 2311 public void onDragExit(DragObject d) { 2312 mDragHasEnteredWorkspace = false; 2313 doDragExit(d); 2314 } 2315 2316 public DropTarget getDropTargetDelegate(DragObject d) { 2317 return null; 2318 } 2319 2320 /** 2321 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 2322 * in the returned structure related to the widgets that match the drop (or a null list if it is 2323 * a shortcut drop). If the drop is not accepted then a null structure is returned. 2324 */ 2325 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 2326 final LauncherModel model = mLauncher.getModel(); 2327 final ClipDescription desc = event.getClipDescription(); 2328 final int mimeTypeCount = desc.getMimeTypeCount(); 2329 for (int i = 0; i < mimeTypeCount; ++i) { 2330 final String mimeType = desc.getMimeType(i); 2331 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 2332 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 2333 } else { 2334 final List<WidgetMimeTypeHandlerData> widgets = 2335 model.resolveWidgetsForMimeType(mContext, mimeType); 2336 if (widgets.size() > 0) { 2337 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 2338 } 2339 } 2340 } 2341 return null; 2342 } 2343 2344 /** 2345 * Global drag and drop handler 2346 */ 2347 @Override 2348 public boolean onDragEvent(DragEvent event) { 2349 final ClipDescription desc = event.getClipDescription(); 2350 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 2351 final int[] pos = new int[2]; 2352 layout.getLocationOnScreen(pos); 2353 // We need to offset the drag coordinates to layout coordinate space 2354 final int x = (int) event.getX() - pos[0]; 2355 final int y = (int) event.getY() - pos[1]; 2356 2357 switch (event.getAction()) { 2358 case DragEvent.ACTION_DRAG_STARTED: { 2359 // Validate this drag 2360 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2361 if (test != null) { 2362 boolean isShortcut = (test.second == null); 2363 if (isShortcut) { 2364 // Check if we have enough space on this screen to add a new shortcut 2365 if (!layout.findCellForSpan(pos, 1, 1)) { 2366 mLauncher.showOutOfSpaceMessage(); 2367 return false; 2368 } 2369 } 2370 } else { 2371 // Show error message if we couldn't accept any of the items 2372 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 2373 Toast.LENGTH_SHORT).show(); 2374 return false; 2375 } 2376 2377 // Create the drag outline 2378 // We need to add extra padding to the bitmap to make room for the glow effect 2379 final Canvas canvas = new Canvas(); 2380 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2381 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 2382 2383 // Show the current page outlines to indicate that we can accept this drop 2384 showOutlines(); 2385 layout.onDragEnter(); 2386 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1, null, null); 2387 2388 return true; 2389 } 2390 case DragEvent.ACTION_DRAG_LOCATION: 2391 // Visualize the drop location 2392 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1, null, null); 2393 return true; 2394 case DragEvent.ACTION_DROP: { 2395 // Try and add any shortcuts 2396 final LauncherModel model = mLauncher.getModel(); 2397 final ClipData data = event.getClipData(); 2398 2399 // We assume that the mime types are ordered in descending importance of 2400 // representation. So we enumerate the list of mime types and alert the 2401 // user if any widgets can handle the drop. Only the most preferred 2402 // representation will be handled. 2403 pos[0] = x; 2404 pos[1] = y; 2405 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2406 if (test != null) { 2407 final int index = test.first; 2408 final List<WidgetMimeTypeHandlerData> widgets = test.second; 2409 final boolean isShortcut = (widgets == null); 2410 final String mimeType = desc.getMimeType(index); 2411 if (isShortcut) { 2412 final Intent intent = data.getItemAt(index).getIntent(); 2413 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 2414 if (info != null) { 2415 onDropExternal(new int[] { x, y }, info, layout, false); 2416 } 2417 } else { 2418 if (widgets.size() == 1) { 2419 // If there is only one item, then go ahead and add and configure 2420 // that widget 2421 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 2422 final PendingAddWidgetInfo createInfo = 2423 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 2424 mLauncher.addAppWidgetFromDrop(createInfo, 2425 LauncherSettings.Favorites.CONTAINER_DESKTOP, mCurrentPage, null, pos); 2426 } else { 2427 // Show the widget picker dialog if there is more than one widget 2428 // that can handle this data type 2429 final InstallWidgetReceiver.WidgetListAdapter adapter = 2430 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 2431 data, widgets, layout, mCurrentPage, pos); 2432 final AlertDialog.Builder builder = 2433 new AlertDialog.Builder(mContext); 2434 builder.setAdapter(adapter, adapter); 2435 builder.setCancelable(true); 2436 builder.setTitle(mContext.getString( 2437 R.string.external_drop_widget_pick_title)); 2438 builder.setIcon(R.drawable.ic_no_applications); 2439 builder.show(); 2440 } 2441 } 2442 } 2443 return true; 2444 } 2445 case DragEvent.ACTION_DRAG_ENDED: 2446 // Hide the page outlines after the drop 2447 layout.onDragExit(); 2448 hideOutlines(); 2449 return true; 2450 } 2451 return super.onDragEvent(event); 2452 } 2453 2454 /* 2455 * 2456 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2457 * coordinate space. The argument xy is modified with the return result. 2458 * 2459 */ 2460 void mapPointFromSelfToChild(View v, float[] xy) { 2461 mapPointFromSelfToChild(v, xy, null); 2462 } 2463 2464 /* 2465 * 2466 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2467 * coordinate space. The argument xy is modified with the return result. 2468 * 2469 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2470 * computing it itself; we use this to avoid redundant matrix inversions in 2471 * findMatchingPageForDragOver 2472 * 2473 */ 2474 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2475 if (cachedInverseMatrix == null) { 2476 v.getMatrix().invert(mTempInverseMatrix); 2477 cachedInverseMatrix = mTempInverseMatrix; 2478 } 2479 xy[0] = xy[0] + mScrollX - v.getLeft(); 2480 xy[1] = xy[1] + mScrollY - v.getTop(); 2481 cachedInverseMatrix.mapPoints(xy); 2482 } 2483 2484 /* 2485 * Maps a point from the Workspace's coordinate system to another sibling view's. (Workspace 2486 * covers the full screen) 2487 */ 2488 void mapPointFromSelfToSibling(View v, float[] xy) { 2489 xy[0] = xy[0] - v.getLeft(); 2490 xy[1] = xy[1] - v.getTop(); 2491 } 2492 2493 /* 2494 * 2495 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2496 * the parent View's coordinate space. The argument xy is modified with the return result. 2497 * 2498 */ 2499 void mapPointFromChildToSelf(View v, float[] xy) { 2500 v.getMatrix().mapPoints(xy); 2501 xy[0] -= (mScrollX - v.getLeft()); 2502 xy[1] -= (mScrollY - v.getTop()); 2503 } 2504 2505 static private float squaredDistance(float[] point1, float[] point2) { 2506 float distanceX = point1[0] - point2[0]; 2507 float distanceY = point2[1] - point2[1]; 2508 return distanceX * distanceX + distanceY * distanceY; 2509 } 2510 2511 /* 2512 * 2513 * Returns true if the passed CellLayout cl overlaps with dragView 2514 * 2515 */ 2516 boolean overlaps(CellLayout cl, DragView dragView, 2517 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2518 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2519 final float[] draggedItemTopLeft = mTempDragCoordinates; 2520 draggedItemTopLeft[0] = dragViewX; 2521 draggedItemTopLeft[1] = dragViewY; 2522 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2523 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2524 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2525 2526 // Transform the dragged item's top left coordinates 2527 // to the CellLayout's local coordinates 2528 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2529 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2530 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2531 2532 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2533 // Transform the dragged item's bottom right coordinates 2534 // to the CellLayout's local coordinates 2535 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2536 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2537 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2538 2539 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2540 float overlap = (overlapRegionRight - overlapRegionLeft) * 2541 (overlapRegionBottom - overlapRegionTop); 2542 if (overlap > 0) { 2543 return true; 2544 } 2545 } 2546 } 2547 return false; 2548 } 2549 2550 /* 2551 * 2552 * This method returns the CellLayout that is currently being dragged to. In order to drag 2553 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2554 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2555 * 2556 * Return null if no CellLayout is currently being dragged over 2557 * 2558 */ 2559 private CellLayout findMatchingPageForDragOver( 2560 DragView dragView, float originX, float originY, boolean exact) { 2561 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2562 // with the item being dragged and then choose the one that's closest to the touch point 2563 final int screenCount = getChildCount(); 2564 CellLayout bestMatchingScreen = null; 2565 float smallestDistSoFar = Float.MAX_VALUE; 2566 2567 for (int i = 0; i < screenCount; i++) { 2568 CellLayout cl = (CellLayout) getChildAt(i); 2569 2570 final float[] touchXy = {originX, originY}; 2571 // Transform the touch coordinates to the CellLayout's local coordinates 2572 // If the touch point is within the bounds of the cell layout, we can return immediately 2573 cl.getMatrix().invert(mTempInverseMatrix); 2574 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2575 2576 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2577 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2578 return cl; 2579 } 2580 2581 if (!exact) { 2582 // Get the center of the cell layout in screen coordinates 2583 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2584 cellLayoutCenter[0] = cl.getWidth()/2; 2585 cellLayoutCenter[1] = cl.getHeight()/2; 2586 mapPointFromChildToSelf(cl, cellLayoutCenter); 2587 2588 touchXy[0] = originX; 2589 touchXy[1] = originY; 2590 2591 // Calculate the distance between the center of the CellLayout 2592 // and the touch point 2593 float dist = squaredDistance(touchXy, cellLayoutCenter); 2594 2595 if (dist < smallestDistSoFar) { 2596 smallestDistSoFar = dist; 2597 bestMatchingScreen = cl; 2598 } 2599 } 2600 } 2601 return bestMatchingScreen; 2602 } 2603 2604 // This is used to compute the visual center of the dragView. This point is then 2605 // used to visualize drop locations and determine where to drop an item. The idea is that 2606 // the visual center represents the user's interpretation of where the item is, and hence 2607 // is the appropriate point to use when determining drop location. 2608 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2609 DragView dragView, float[] recycle) { 2610 float res[]; 2611 if (recycle == null) { 2612 res = new float[2]; 2613 } else { 2614 res = recycle; 2615 } 2616 2617 // First off, the drag view has been shifted in a way that is not represented in the 2618 // x and y values or the x/yOffsets. Here we account for that shift. 2619 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2620 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2621 2622 // These represent the visual top and left of drag view if a dragRect was provided. 2623 // If a dragRect was not provided, then they correspond to the actual view left and 2624 // top, as the dragRect is in that case taken to be the entire dragView. 2625 // R.dimen.dragViewOffsetY. 2626 int left = x - xOffset; 2627 int top = y - yOffset; 2628 2629 // In order to find the visual center, we shift by half the dragRect 2630 res[0] = left + dragView.getDragRegion().width() / 2; 2631 res[1] = top + dragView.getDragRegion().height() / 2; 2632 2633 return res; 2634 } 2635 2636 private boolean isDragWidget(DragObject d) { 2637 return (d.dragInfo instanceof LauncherAppWidgetInfo || 2638 d.dragInfo instanceof PendingAddWidgetInfo); 2639 } 2640 private boolean isExternalDragWidget(DragObject d) { 2641 return d.dragSource != this && isDragWidget(d); 2642 } 2643 2644 public void onDragOver(DragObject d) { 2645 // Skip drag over events while we are dragging over side pages 2646 if (mInScrollArea) return; 2647 if (mIsSwitchingState) return; 2648 2649 Rect r = new Rect(); 2650 CellLayout layout = null; 2651 ItemInfo item = (ItemInfo) d.dragInfo; 2652 2653 // Ensure that we have proper spans for the item that we are dropping 2654 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2655 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2656 d.dragView, mDragViewVisualCenter); 2657 2658 // Identify whether we have dragged over a side page 2659 if (isSmall()) { 2660 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 2661 mLauncher.getHotseat().getHitRect(r); 2662 if (r.contains(d.x, d.y)) { 2663 layout = mLauncher.getHotseat().getLayout(); 2664 } 2665 } 2666 if (layout == null) { 2667 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false); 2668 } 2669 if (layout != mDragTargetLayout) { 2670 // Cancel all intermediate folder states 2671 cleanupFolderCreation(d); 2672 2673 if (mDragTargetLayout != null) { 2674 mDragTargetLayout.setIsDragOverlapping(false); 2675 mDragTargetLayout.onDragExit(); 2676 } 2677 mDragTargetLayout = layout; 2678 if (mDragTargetLayout != null) { 2679 mDragTargetLayout.setIsDragOverlapping(true); 2680 mDragTargetLayout.onDragEnter(); 2681 } else { 2682 mLastDragOverView = null; 2683 } 2684 2685 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 2686 if (isInSpringLoadedMode) { 2687 if (mLauncher.isHotseatLayout(layout)) { 2688 mSpringLoadedDragController.cancel(); 2689 } else { 2690 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2691 } 2692 } 2693 } 2694 } else { 2695 // Test to see if we are over the hotseat otherwise just use the current page 2696 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 2697 mLauncher.getHotseat().getHitRect(r); 2698 if (r.contains(d.x, d.y)) { 2699 layout = mLauncher.getHotseat().getLayout(); 2700 } 2701 } 2702 if (layout == null) { 2703 layout = getCurrentDropLayout(); 2704 } 2705 if (layout != mDragTargetLayout) { 2706 if (mDragTargetLayout != null) { 2707 mDragTargetLayout.setIsDragOverlapping(false); 2708 mDragTargetLayout.onDragExit(); 2709 } 2710 mDragTargetLayout = layout; 2711 mDragTargetLayout.setIsDragOverlapping(true); 2712 mDragTargetLayout.onDragEnter(); 2713 } 2714 } 2715 2716 // Handle the drag over 2717 if (mDragTargetLayout != null) { 2718 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2719 2720 // We want the point to be mapped to the dragTarget. 2721 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2722 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2723 } else { 2724 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2725 } 2726 ItemInfo info = (ItemInfo) d.dragInfo; 2727 2728 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2729 (int) mDragViewVisualCenter[1], 1, 1, mDragTargetLayout, mTargetCell); 2730 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2731 mTargetCell[1]); 2732 2733 boolean userFolderPending = willCreateUserFolder(info, mDragTargetLayout, 2734 mTargetCell, false); 2735 boolean isOverFolder = dragOverView instanceof FolderIcon; 2736 if (dragOverView != mLastDragOverView) { 2737 cancelFolderCreation(); 2738 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2739 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2740 } 2741 } 2742 2743 if (userFolderPending && dragOverView != mLastDragOverView) { 2744 mFolderCreationAlarm.setOnAlarmListener(new 2745 FolderCreationAlarmListener(mDragTargetLayout, mTargetCell[0], mTargetCell[1])); 2746 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2747 } 2748 2749 if (dragOverView != mLastDragOverView && isOverFolder) { 2750 ((FolderIcon) dragOverView).onDragEnter(d.dragInfo); 2751 if (mDragTargetLayout != null) { 2752 mDragTargetLayout.clearDragOutlines(); 2753 } 2754 } 2755 mLastDragOverView = dragOverView; 2756 2757 if (!mCreateUserFolderOnDrop && !isOverFolder) { 2758 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2759 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2760 item.spanX, item.spanY, d.dragView.getDragVisualizeOffset(), 2761 d.dragView.getDragRegion()); 2762 } 2763 } 2764 } 2765 2766 private void cleanupFolderCreation(DragObject d) { 2767 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2768 mDragFolderRingAnimator.animateToNaturalState(); 2769 } 2770 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2771 if (d != null) { 2772 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2773 } 2774 } 2775 mFolderCreationAlarm.cancelAlarm(); 2776 } 2777 2778 private void cancelFolderCreation() { 2779 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2780 mDragFolderRingAnimator.animateToNaturalState(); 2781 } 2782 mCreateUserFolderOnDrop = false; 2783 mFolderCreationAlarm.cancelAlarm(); 2784 } 2785 2786 class FolderCreationAlarmListener implements OnAlarmListener { 2787 CellLayout layout; 2788 int cellX; 2789 int cellY; 2790 2791 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 2792 this.layout = layout; 2793 this.cellX = cellX; 2794 this.cellY = cellY; 2795 } 2796 2797 public void onAlarm(Alarm alarm) { 2798 if (mDragFolderRingAnimator == null) { 2799 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 2800 } 2801 mDragFolderRingAnimator.setCell(cellX, cellY); 2802 mDragFolderRingAnimator.setCellLayout(layout); 2803 mDragFolderRingAnimator.animateToAcceptState(); 2804 layout.showFolderAccept(mDragFolderRingAnimator); 2805 layout.clearDragOutlines(); 2806 mCreateUserFolderOnDrop = true; 2807 } 2808 } 2809 2810 @Override 2811 public void getHitRect(Rect outRect) { 2812 // We want the workspace to have the whole area of the display (it will find the correct 2813 // cell layout to drop to in the existing drag/drop logic. 2814 outRect.set(0, 0, mDisplayWidth, mDisplayHeight); 2815 } 2816 2817 /** 2818 * Add the item specified by dragInfo to the given layout. 2819 * @return true if successful 2820 */ 2821 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2822 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2823 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2824 return true; 2825 } 2826 mLauncher.showOutOfSpaceMessage(); 2827 return false; 2828 } 2829 2830 private void onDropExternal(int[] touchXY, Object dragInfo, 2831 CellLayout cellLayout, boolean insertAtFirst) { 2832 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 2833 } 2834 2835 /** 2836 * Drop an item that didn't originate on one of the workspace screens. 2837 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2838 * come from another app altogether. 2839 * 2840 * NOTE: This can also be called when we are outside of a drag event, when we want 2841 * to add an item to one of the workspace screens. 2842 */ 2843 private void onDropExternal(final int[] touchXY, final Object dragInfo, 2844 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 2845 final Runnable exitSpringLoadedRunnable = new Runnable() { 2846 @Override 2847 public void run() { 2848 mLauncher.exitSpringLoadedDragModeDelayed(true, false); 2849 } 2850 }; 2851 2852 ItemInfo info = (ItemInfo) dragInfo; 2853 int spanX = info.spanX; 2854 int spanY = info.spanY; 2855 if (mDragInfo != null) { 2856 spanX = mDragInfo.spanX; 2857 spanY = mDragInfo.spanY; 2858 } 2859 2860 final long container = mLauncher.isHotseatLayout(cellLayout) ? 2861 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2862 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2863 final int screen = indexOfChild(cellLayout); 2864 if (!mLauncher.isHotseatLayout(cellLayout) && screen != mCurrentPage 2865 && mState != State.SPRING_LOADED) { 2866 snapToPage(screen); 2867 } 2868 2869 if (info instanceof PendingAddItemInfo) { 2870 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 2871 2872 boolean findNearestVacantCell = true; 2873 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 2874 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 2875 cellLayout, mTargetCell); 2876 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, 2877 true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 2878 mDragTargetLayout, mTargetCell)) { 2879 findNearestVacantCell = false; 2880 } 2881 } 2882 if (findNearestVacantCell) { 2883 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], spanX, spanY, null, 2884 cellLayout, mTargetCell); 2885 } 2886 2887 Runnable onAnimationCompleteRunnable = new Runnable() { 2888 @Override 2889 public void run() { 2890 // When dragging and dropping from customization tray, we deal with creating 2891 // widgets/shortcuts/folders in a slightly different way 2892 switch (pendingInfo.itemType) { 2893 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 2894 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, 2895 container, screen, mTargetCell, null); 2896 break; 2897 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2898 mLauncher.processShortcutFromDrop(pendingInfo.componentName, 2899 container, screen, mTargetCell, null); 2900 break; 2901 default: 2902 throw new IllegalStateException("Unknown item type: " + 2903 pendingInfo.itemType); 2904 } 2905 cellLayout.onDragExit(); 2906 } 2907 }; 2908 2909 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 2910 // location and size on the home screen. 2911 RectF r = estimateItemPosition(cellLayout, pendingInfo, 2912 mTargetCell[0], mTargetCell[1], spanX, spanY); 2913 int loc[] = new int[2]; 2914 loc[0] = (int) r.left; 2915 loc[1] = (int) r.top; 2916 setFinalTransitionTransform(cellLayout); 2917 float cellLayoutScale = 2918 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(cellLayout, loc); 2919 resetTransitionTransform(cellLayout); 2920 2921 float dragViewScale = Math.min(r.width() / d.dragView.getMeasuredWidth(), 2922 r.height() / d.dragView.getMeasuredHeight()); 2923 // The animation will scale the dragView about its center, so we need to center about 2924 // the final location. 2925 loc[0] -= (d.dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 2926 loc[1] -= (d.dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 2927 2928 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, loc, 2929 dragViewScale * cellLayoutScale, onAnimationCompleteRunnable); 2930 } else { 2931 // This is for other drag/drop cases, like dragging from All Apps 2932 View view = null; 2933 2934 switch (info.itemType) { 2935 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 2936 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2937 if (info.container == NO_ID && info instanceof ApplicationInfo) { 2938 // Came from all apps -- make a copy 2939 info = new ShortcutInfo((ApplicationInfo) info); 2940 } 2941 view = mLauncher.createShortcut(R.layout.application, cellLayout, 2942 (ShortcutInfo) info); 2943 break; 2944 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 2945 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 2946 (FolderInfo) info, mIconCache); 2947 break; 2948 default: 2949 throw new IllegalStateException("Unknown item type: " + info.itemType); 2950 } 2951 2952 // First we find the cell nearest to point at which the item is 2953 // dropped, without any consideration to whether there is an item there. 2954 if (touchXY != null) { 2955 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 2956 cellLayout, mTargetCell); 2957 d.postAnimationRunnable = exitSpringLoadedRunnable; 2958 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, true, 2959 d.dragView, d.postAnimationRunnable)) { 2960 return; 2961 } 2962 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, d, true)) { 2963 return; 2964 } 2965 } 2966 2967 if (touchXY != null) { 2968 // when dragging and dropping, just find the closest free spot 2969 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], 1, 1, null, 2970 cellLayout, mTargetCell); 2971 } else { 2972 cellLayout.findCellForSpan(mTargetCell, 1, 1); 2973 } 2974 addInScreen(view, container, screen, mTargetCell[0], mTargetCell[1], info.spanX, 2975 info.spanY, insertAtFirst); 2976 cellLayout.onDropChild(view); 2977 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2978 cellLayout.getChildrenLayout().measureChild(view); 2979 2980 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, 2981 lp.cellX, lp.cellY); 2982 2983 if (d.dragView != null) { 2984 // We wrap the animation call in the temporary set and reset of the current 2985 // cellLayout to its final transform -- this means we animate the drag view to 2986 // the correct final location. 2987 setFinalTransitionTransform(cellLayout); 2988 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 2989 exitSpringLoadedRunnable); 2990 resetTransitionTransform(cellLayout); 2991 } 2992 } 2993 } 2994 2995 public void setFinalTransitionTransform(CellLayout layout) { 2996 if (isSwitchingState()) { 2997 int index = indexOfChild(layout); 2998 mCurrentScaleX = layout.getScaleX(); 2999 mCurrentScaleY = layout.getScaleY(); 3000 mCurrentTranslationX = layout.getTranslationX(); 3001 mCurrentTranslationY = layout.getTranslationY(); 3002 mCurrentRotationY = layout.getRotationY(); 3003 layout.setScaleX(mNewScaleXs[index]); 3004 layout.setScaleY(mNewScaleYs[index]); 3005 layout.setTranslationX(mNewTranslationXs[index]); 3006 layout.setTranslationY(mNewTranslationYs[index]); 3007 layout.setRotationY(mNewRotationYs[index]); 3008 } 3009 } 3010 public void resetTransitionTransform(CellLayout layout) { 3011 if (isSwitchingState()) { 3012 mCurrentScaleX = layout.getScaleX(); 3013 mCurrentScaleY = layout.getScaleY(); 3014 mCurrentTranslationX = layout.getTranslationX(); 3015 mCurrentTranslationY = layout.getTranslationY(); 3016 mCurrentRotationY = layout.getRotationY(); 3017 layout.setScaleX(mCurrentScaleX); 3018 layout.setScaleY(mCurrentScaleY); 3019 layout.setTranslationX(mCurrentTranslationX); 3020 layout.setTranslationY(mCurrentTranslationY); 3021 layout.setRotationY(mCurrentRotationY); 3022 } 3023 } 3024 3025 /** 3026 * Return the current {@link CellLayout}, correctly picking the destination 3027 * screen while a scroll is in progress. 3028 */ 3029 public CellLayout getCurrentDropLayout() { 3030 return (CellLayout) getChildAt(mNextPage == INVALID_PAGE ? mCurrentPage : mNextPage); 3031 } 3032 3033 /** 3034 * Return the current CellInfo describing our current drag; this method exists 3035 * so that Launcher can sync this object with the correct info when the activity is created/ 3036 * destroyed 3037 * 3038 */ 3039 public CellLayout.CellInfo getDragInfo() { 3040 return mDragInfo; 3041 } 3042 3043 /** 3044 * Calculate the nearest cell where the given object would be dropped. 3045 * 3046 * pixelX and pixelY should be in the coordinate system of layout 3047 */ 3048 private int[] findNearestVacantArea(int pixelX, int pixelY, 3049 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 3050 return layout.findNearestVacantArea( 3051 pixelX, pixelY, spanX, spanY, ignoreView, recycle); 3052 } 3053 3054 /** 3055 * Calculate the nearest cell where the given object would be dropped. 3056 * 3057 * pixelX and pixelY should be in the coordinate system of layout 3058 */ 3059 private int[] findNearestArea(int pixelX, int pixelY, 3060 int spanX, int spanY, CellLayout layout, int[] recycle) { 3061 return layout.findNearestArea( 3062 pixelX, pixelY, spanX, spanY, recycle); 3063 } 3064 3065 void setup(DragController dragController) { 3066 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3067 mDragController = dragController; 3068 3069 // hardware layers on children are enabled on startup, but should be disabled until 3070 // needed 3071 updateChildrenLayersEnabled(); 3072 setWallpaperDimension(); 3073 } 3074 3075 /** 3076 * Called at the end of a drag which originated on the workspace. 3077 */ 3078 public void onDropCompleted(View target, DragObject d, boolean success) { 3079 if (success) { 3080 if (target != this) { 3081 if (mDragInfo != null) { 3082 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 3083 if (mDragInfo.cell instanceof DropTarget) { 3084 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 3085 } 3086 } 3087 } 3088 } else if (mDragInfo != null) { 3089 // NOTE: When 'success' is true, onDragExit is called by the DragController before 3090 // calling onDropCompleted(). We call it ourselves here, but maybe this should be 3091 // moved into DragController.cancelDrag(). 3092 doDragExit(null); 3093 CellLayout cellLayout; 3094 if (mLauncher.isHotseatLayout(target)) { 3095 cellLayout = mLauncher.getHotseat().getLayout(); 3096 } else { 3097 cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3098 } 3099 cellLayout.onDropChild(mDragInfo.cell); 3100 } 3101 if (d.cancelled && mDragInfo.cell != null) { 3102 mDragInfo.cell.setVisibility(VISIBLE); 3103 } 3104 mDragOutline = null; 3105 mDragInfo = null; 3106 } 3107 3108 public boolean isDropEnabled() { 3109 return true; 3110 } 3111 3112 @Override 3113 protected void onRestoreInstanceState(Parcelable state) { 3114 super.onRestoreInstanceState(state); 3115 Launcher.setScreen(mCurrentPage); 3116 } 3117 3118 @Override 3119 public void scrollLeft() { 3120 if (!isSmall() && !mIsSwitchingState) { 3121 super.scrollLeft(); 3122 } 3123 Folder openFolder = getOpenFolder(); 3124 if (openFolder != null) { 3125 openFolder.completeDragExit(); 3126 } 3127 } 3128 3129 @Override 3130 public void scrollRight() { 3131 if (!isSmall() && !mIsSwitchingState) { 3132 super.scrollRight(); 3133 } 3134 Folder openFolder = getOpenFolder(); 3135 if (openFolder != null) { 3136 openFolder.completeDragExit(); 3137 } 3138 } 3139 3140 @Override 3141 public boolean onEnterScrollArea(int x, int y, int direction) { 3142 // Ignore the scroll area if we are dragging over the hot seat 3143 if (mLauncher.getHotseat() != null) { 3144 Rect r = new Rect(); 3145 mLauncher.getHotseat().getHitRect(r); 3146 if (r.contains(x, y)) { 3147 return false; 3148 } 3149 } 3150 3151 boolean result = false; 3152 if (!isSmall() && !mIsSwitchingState) { 3153 mInScrollArea = true; 3154 3155 final int page = mCurrentPage + (direction == DragController.SCROLL_LEFT ? -1 : 1); 3156 final CellLayout layout = (CellLayout) getChildAt(page); 3157 cancelFolderCreation(); 3158 3159 if (layout != null) { 3160 // Exit the current layout and mark the overlapping layout 3161 if (mDragTargetLayout != null) { 3162 mDragTargetLayout.setIsDragOverlapping(false); 3163 mDragTargetLayout.onDragExit(); 3164 } 3165 mDragTargetLayout = layout; 3166 mDragTargetLayout.setIsDragOverlapping(true); 3167 3168 // Workspace is responsible for drawing the edge glow on adjacent pages, 3169 // so we need to redraw the workspace when this may have changed. 3170 invalidate(); 3171 result = true; 3172 } 3173 } 3174 return result; 3175 } 3176 3177 @Override 3178 public boolean onExitScrollArea() { 3179 boolean result = false; 3180 if (mInScrollArea) { 3181 if (mDragTargetLayout != null) { 3182 mDragTargetLayout.setIsDragOverlapping(false); 3183 // Workspace is responsible for drawing the edge glow on adjacent pages, 3184 // so we need to redraw the workspace when this may have changed. 3185 invalidate(); 3186 } 3187 if (mDragTargetLayout != null && mDragHasEnteredWorkspace) { 3188 // Unmark the overlapping layout and re-enter the current layout 3189 mDragTargetLayout = getCurrentDropLayout(); 3190 mDragTargetLayout.onDragEnter(); 3191 } 3192 result = true; 3193 mInScrollArea = false; 3194 } 3195 return result; 3196 } 3197 3198 private void onResetScrollArea() { 3199 if (mDragTargetLayout != null) { 3200 // Unmark the overlapping layout 3201 mDragTargetLayout.setIsDragOverlapping(false); 3202 3203 // Workspace is responsible for drawing the edge glow on adjacent pages, 3204 // so we need to redraw the workspace when this may have changed. 3205 invalidate(); 3206 } 3207 mInScrollArea = false; 3208 } 3209 3210 /** 3211 * Returns a specific CellLayout 3212 */ 3213 CellLayout getParentCellLayoutForView(View v) { 3214 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3215 for (CellLayout layout : layouts) { 3216 if (layout.getChildrenLayout().indexOfChild(v) > -1) { 3217 return layout; 3218 } 3219 } 3220 return null; 3221 } 3222 3223 /** 3224 * Returns a list of all the CellLayouts in the workspace. 3225 */ 3226 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3227 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3228 int screenCount = getChildCount(); 3229 for (int screen = 0; screen < screenCount; screen++) { 3230 layouts.add(((CellLayout) getChildAt(screen))); 3231 } 3232 if (mLauncher.getHotseat() != null) { 3233 layouts.add(mLauncher.getHotseat().getLayout()); 3234 } 3235 return layouts; 3236 } 3237 3238 /** 3239 * We should only use this to search for specific children. Do not use this method to modify 3240 * CellLayoutChildren directly. 3241 */ 3242 ArrayList<CellLayoutChildren> getWorkspaceAndHotseatCellLayoutChildren() { 3243 ArrayList<CellLayoutChildren> childrenLayouts = new ArrayList<CellLayoutChildren>(); 3244 int screenCount = getChildCount(); 3245 for (int screen = 0; screen < screenCount; screen++) { 3246 childrenLayouts.add(((CellLayout) getChildAt(screen)).getChildrenLayout()); 3247 } 3248 if (mLauncher.getHotseat() != null) { 3249 childrenLayouts.add(mLauncher.getHotseat().getLayout().getChildrenLayout()); 3250 } 3251 return childrenLayouts; 3252 } 3253 3254 public Folder getFolderForTag(Object tag) { 3255 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3256 for (CellLayoutChildren layout: childrenLayouts) { 3257 int count = layout.getChildCount(); 3258 for (int i = 0; i < count; i++) { 3259 View child = layout.getChildAt(i); 3260 if (child instanceof Folder) { 3261 Folder f = (Folder) child; 3262 if (f.getInfo() == tag && f.getInfo().opened) { 3263 return f; 3264 } 3265 } 3266 } 3267 } 3268 return null; 3269 } 3270 3271 public View getViewForTag(Object tag) { 3272 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3273 for (CellLayoutChildren layout: childrenLayouts) { 3274 int count = layout.getChildCount(); 3275 for (int i = 0; i < count; i++) { 3276 View child = layout.getChildAt(i); 3277 if (child.getTag() == tag) { 3278 return child; 3279 } 3280 } 3281 } 3282 return null; 3283 } 3284 3285 void clearDropTargets() { 3286 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3287 for (CellLayoutChildren layout: childrenLayouts) { 3288 int childCount = layout.getChildCount(); 3289 for (int j = 0; j < childCount; j++) { 3290 View v = layout.getChildAt(j); 3291 if (v instanceof DropTarget) { 3292 mDragController.removeDropTarget((DropTarget) v); 3293 } 3294 } 3295 } 3296 } 3297 3298 void removeItems(final ArrayList<ApplicationInfo> apps) { 3299 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3300 3301 final HashSet<String> packageNames = new HashSet<String>(); 3302 final int appCount = apps.size(); 3303 for (int i = 0; i < appCount; i++) { 3304 packageNames.add(apps.get(i).componentName.getPackageName()); 3305 } 3306 3307 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3308 for (final CellLayout layoutParent: cellLayouts) { 3309 final ViewGroup layout = layoutParent.getChildrenLayout(); 3310 3311 // Avoid ANRs by treating each screen separately 3312 post(new Runnable() { 3313 public void run() { 3314 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3315 childrenToRemove.clear(); 3316 3317 int childCount = layout.getChildCount(); 3318 for (int j = 0; j < childCount; j++) { 3319 final View view = layout.getChildAt(j); 3320 Object tag = view.getTag(); 3321 3322 if (tag instanceof ShortcutInfo) { 3323 final ShortcutInfo info = (ShortcutInfo) tag; 3324 final Intent intent = info.intent; 3325 final ComponentName name = intent.getComponent(); 3326 3327 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3328 for (String packageName: packageNames) { 3329 if (packageName.equals(name.getPackageName())) { 3330 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3331 childrenToRemove.add(view); 3332 } 3333 } 3334 } 3335 } else if (tag instanceof FolderInfo) { 3336 final FolderInfo info = (FolderInfo) tag; 3337 final ArrayList<ShortcutInfo> contents = info.contents; 3338 final int contentsCount = contents.size(); 3339 final ArrayList<ShortcutInfo> appsToRemoveFromFolder = 3340 new ArrayList<ShortcutInfo>(); 3341 3342 for (int k = 0; k < contentsCount; k++) { 3343 final ShortcutInfo appInfo = contents.get(k); 3344 final Intent intent = appInfo.intent; 3345 final ComponentName name = intent.getComponent(); 3346 3347 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3348 for (String packageName: packageNames) { 3349 if (packageName.equals(name.getPackageName())) { 3350 appsToRemoveFromFolder.add(appInfo); 3351 } 3352 } 3353 } 3354 } 3355 for (ShortcutInfo item: appsToRemoveFromFolder) { 3356 info.remove(item); 3357 LauncherModel.deleteItemFromDatabase(mLauncher, item); 3358 } 3359 } else if (tag instanceof LauncherAppWidgetInfo) { 3360 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3361 final AppWidgetProviderInfo provider = 3362 widgets.getAppWidgetInfo(info.appWidgetId); 3363 if (provider != null) { 3364 for (String packageName: packageNames) { 3365 if (packageName.equals(provider.provider.getPackageName())) { 3366 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3367 childrenToRemove.add(view); 3368 } 3369 } 3370 } 3371 } 3372 } 3373 3374 childCount = childrenToRemove.size(); 3375 for (int j = 0; j < childCount; j++) { 3376 View child = childrenToRemove.get(j); 3377 // Note: We can not remove the view directly from CellLayoutChildren as this 3378 // does not re-mark the spaces as unoccupied. 3379 layoutParent.removeViewInLayout(child); 3380 if (child instanceof DropTarget) { 3381 mDragController.removeDropTarget((DropTarget)child); 3382 } 3383 } 3384 3385 if (childCount > 0) { 3386 layout.requestLayout(); 3387 layout.invalidate(); 3388 } 3389 } 3390 }); 3391 } 3392 } 3393 3394 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3395 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3396 for (CellLayoutChildren layout: childrenLayouts) { 3397 int childCount = layout.getChildCount(); 3398 for (int j = 0; j < childCount; j++) { 3399 final View view = layout.getChildAt(j); 3400 Object tag = view.getTag(); 3401 if (tag instanceof ShortcutInfo) { 3402 ShortcutInfo info = (ShortcutInfo)tag; 3403 // We need to check for ACTION_MAIN otherwise getComponent() might 3404 // return null for some shortcuts (for instance, for shortcuts to 3405 // web pages.) 3406 final Intent intent = info.intent; 3407 final ComponentName name = intent.getComponent(); 3408 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3409 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3410 final int appCount = apps.size(); 3411 for (int k = 0; k < appCount; k++) { 3412 ApplicationInfo app = apps.get(k); 3413 if (app.componentName.equals(name)) { 3414 info.setIcon(mIconCache.getIcon(info.intent)); 3415 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 3416 new FastBitmapDrawable(info.getIcon(mIconCache)), 3417 null, null); 3418 } 3419 } 3420 } 3421 } 3422 } 3423 } 3424 } 3425 3426 void moveToDefaultScreen(boolean animate) { 3427 if (!isSmall()) { 3428 if (animate) { 3429 snapToPage(mDefaultPage); 3430 } else { 3431 setCurrentPage(mDefaultPage); 3432 } 3433 } 3434 getChildAt(mDefaultPage).requestFocus(); 3435 } 3436 3437 @Override 3438 public void syncPages() { 3439 } 3440 3441 @Override 3442 public void syncPageItems(int page, boolean immediate) { 3443 } 3444 3445 @Override 3446 protected String getCurrentPageDescription() { 3447 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 3448 return String.format(mContext.getString(R.string.workspace_scroll_format), 3449 page + 1, getChildCount()); 3450 } 3451 3452 public void getLocationInDragLayer(int[] loc) { 3453 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 3454 } 3455 3456 void setFadeForOverScroll(float fade) { 3457 if (!isScrollingIndicatorEnabled()) return; 3458 3459 mOverscrollFade = fade; 3460 float reducedFade = 0.5f + 0.5f * (1 - fade); 3461 final ViewGroup parent = (ViewGroup) getParent(); 3462 final ImageView qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3463 final ImageView dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3464 final View scrollIndicator = getScrollingIndicator(); 3465 3466 cancelScrollingIndicatorAnimations(); 3467 if (qsbDivider != null) qsbDivider.setAlpha(reducedFade); 3468 if (dockDivider != null) dockDivider.setAlpha(reducedFade); 3469 scrollIndicator.setAlpha(1 - fade); 3470 } 3471} 3472