Workspace.java revision 6441de0ec2a71862798dd51180d0811b42edd514
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.ViewConfiguration; 61import android.view.ViewGroup; 62import android.view.animation.DecelerateInterpolator; 63import android.widget.ImageView; 64import android.widget.TextView; 65import android.widget.Toast; 66 67import com.android.launcher.R; 68import com.android.launcher2.FolderIcon.FolderRingAnimator; 69import com.android.launcher2.InstallWidgetReceiver.WidgetMimeTypeHandlerData; 70 71import java.util.ArrayList; 72import java.util.HashSet; 73import java.util.List; 74 75/** 76 * The workspace is a wide area with a wallpaper and a finite number of pages. 77 * Each page contains a number of icons, folders or widgets the user can 78 * interact with. A workspace is meant to be used with a fixed width only. 79 */ 80public class Workspace extends SmoothPagedView 81 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 82 DragController.DragListener { 83 @SuppressWarnings({"UnusedDeclaration"}) 84 private static final String TAG = "Launcher.Workspace"; 85 86 // Y rotation to apply to the workspace screens 87 private static final float WORKSPACE_ROTATION = 12.5f; 88 private static final float WORKSPACE_OVERSCROLL_ROTATION = 24f; 89 private static float CAMERA_DISTANCE = 6500; 90 91 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 92 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 93 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 94 95 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 96 private static final int ADJACENT_SCREEN_DROP_DURATION = 300; 97 private static final int FLING_THRESHOLD_VELOCITY = 500; 98 99 // These animators are used to fade the children's outlines 100 private ObjectAnimator mChildrenOutlineFadeInAnimation; 101 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 102 private float mChildrenOutlineAlpha = 0; 103 104 // These properties refer to the background protection gradient used for AllApps and Customize 105 private ValueAnimator mBackgroundFadeInAnimation; 106 private ValueAnimator mBackgroundFadeOutAnimation; 107 private Drawable mBackground; 108 boolean mDrawBackground = true; 109 private float mBackgroundAlpha = 0; 110 private float mOverScrollMaxBackgroundAlpha = 0.0f; 111 private int mOverScrollPageIndex = -1; 112 113 private float mWallpaperScrollRatio = 1.0f; 114 115 private final WallpaperManager mWallpaperManager; 116 private IBinder mWindowToken; 117 private static final float WALLPAPER_SCREENS_SPAN = 2f; 118 119 private int mDefaultPage; 120 121 /** 122 * CellInfo for the cell that is currently being dragged 123 */ 124 private CellLayout.CellInfo mDragInfo; 125 126 /** 127 * Target drop area calculated during last acceptDrop call. 128 */ 129 private int[] mTargetCell = new int[2]; 130 131 /** 132 * The CellLayout that is currently being dragged over 133 */ 134 private CellLayout mDragTargetLayout = null; 135 private boolean mDragHasEnteredWorkspace = false; 136 137 private Launcher mLauncher; 138 private IconCache mIconCache; 139 private DragController mDragController; 140 141 // These are temporary variables to prevent having to allocate a new object just to 142 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 143 private int[] mTempCell = new int[2]; 144 private int[] mTempEstimate = new int[2]; 145 private float[] mDragViewVisualCenter = new float[2]; 146 private float[] mTempDragCoordinates = new float[2]; 147 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 148 private float[] mTempDragBottomRightCoordinates = new float[2]; 149 private Matrix mTempInverseMatrix = new Matrix(); 150 151 private SpringLoadedDragController mSpringLoadedDragController; 152 private float mSpringLoadedShrinkFactor; 153 154 private static final int DEFAULT_CELL_COUNT_X = 4; 155 private static final int DEFAULT_CELL_COUNT_Y = 4; 156 157 // State variable that indicates whether the pages are small (ie when you're 158 // in all apps or customize mode) 159 160 enum State { NORMAL, SPRING_LOADED, SMALL }; 161 private State mState = State.NORMAL; 162 private boolean mIsSwitchingState = false; 163 164 private AnimatorListener mChangeStateAnimationListener; 165 166 boolean mAnimatingViewIntoPlace = false; 167 boolean mIsDragOccuring = false; 168 boolean mChildrenLayersEnabled = true; 169 170 /** Is the user is dragging an item near the edge of a page? */ 171 private boolean mInScrollArea = false; 172 173 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 174 private Bitmap mDragOutline = null; 175 private final Rect mTempRect = new Rect(); 176 private final int[] mTempXY = new int[2]; 177 private int mDragViewMultiplyColor; 178 private float mOverscrollFade = 0; 179 180 // Paint used to draw external drop outline 181 private final Paint mExternalDragOutlinePaint = new Paint(); 182 183 // Camera and Matrix used to determine the final position of a neighboring CellLayout 184 private final Matrix mMatrix = new Matrix(); 185 private final Camera mCamera = new Camera(); 186 private final float mTempFloat2[] = new float[2]; 187 188 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 189 int mWallpaperWidth; 190 int mWallpaperHeight; 191 WallpaperOffsetInterpolator mWallpaperOffset; 192 boolean mUpdateWallpaperOffsetImmediately = false; 193 private Runnable mDelayedResizeRunnable; 194 private int mDisplayWidth; 195 private int mDisplayHeight; 196 private int mWallpaperTravelWidth; 197 198 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 199 private static final int FOLDER_CREATION_TIMEOUT = 250; 200 private final Alarm mFolderCreationAlarm = new Alarm(); 201 private FolderRingAnimator mDragFolderRingAnimator = null; 202 private View mLastDragOverView = null; 203 private boolean mCreateUserFolderOnDrop = false; 204 205 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 206 private float mXDown; 207 private float mYDown; 208 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 209 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 210 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 211 212 // These variables are used for storing the initial and final values during workspace animations 213 private int mSavedScrollX; 214 private float mSavedRotationY; 215 private float mSavedTranslationX; 216 private float mCurrentScaleX; 217 private float mCurrentScaleY; 218 private float mCurrentRotationY; 219 private float mCurrentTranslationX; 220 private float mCurrentTranslationY; 221 private float[] mOldTranslationXs; 222 private float[] mOldTranslationYs; 223 private float[] mOldScaleXs; 224 private float[] mOldScaleYs; 225 private float[] mOldBackgroundAlphas; 226 private float[] mOldBackgroundAlphaMultipliers; 227 private float[] mOldAlphas; 228 private float[] mOldRotationYs; 229 private float[] mNewTranslationXs; 230 private float[] mNewTranslationYs; 231 private float[] mNewScaleXs; 232 private float[] mNewScaleYs; 233 private float[] mNewBackgroundAlphas; 234 private float[] mNewBackgroundAlphaMultipliers; 235 private float[] mNewAlphas; 236 private float[] mNewRotationYs; 237 private float mTransitionProgress; 238 239 /** 240 * Used to inflate the Workspace from XML. 241 * 242 * @param context The application's context. 243 * @param attrs The attributes set containing the Workspace's customization values. 244 */ 245 public Workspace(Context context, AttributeSet attrs) { 246 this(context, attrs, 0); 247 } 248 249 /** 250 * Used to inflate the Workspace from XML. 251 * 252 * @param context The application's context. 253 * @param attrs The attributes set containing the Workspace's customization values. 254 * @param defStyle Unused. 255 */ 256 public Workspace(Context context, AttributeSet attrs, int defStyle) { 257 super(context, attrs, defStyle); 258 mContentIsRefreshable = false; 259 260 // With workspace, data is available straight from the get-go 261 setDataIsReady(); 262 263 mFadeInAdjacentScreens = 264 getResources().getBoolean(R.bool.config_workspaceFadeAdjacentScreens); 265 mWallpaperManager = WallpaperManager.getInstance(context); 266 267 int cellCountX = DEFAULT_CELL_COUNT_X; 268 int cellCountY = DEFAULT_CELL_COUNT_Y; 269 270 TypedArray a = context.obtainStyledAttributes(attrs, 271 R.styleable.Workspace, defStyle, 0); 272 273 final Resources res = context.getResources(); 274 if (LauncherApplication.isScreenLarge()) { 275 // Determine number of rows/columns dynamically 276 // TODO: This code currently fails on tablets with an aspect ratio < 1.3. 277 // Around that ratio we should make cells the same size in portrait and 278 // landscape 279 TypedArray actionBarSizeTypedArray = 280 context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize }); 281 final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); 282 final float systemBarHeight = res.getDimension(R.dimen.status_bar_height); 283 final float smallestScreenDim = res.getConfiguration().smallestScreenWidthDp; 284 285 cellCountX = 1; 286 while (CellLayout.widthInPortrait(res, cellCountX + 1) <= smallestScreenDim) { 287 cellCountX++; 288 } 289 290 cellCountY = 1; 291 while (actionBarHeight + CellLayout.heightInLandscape(res, cellCountY + 1) 292 <= smallestScreenDim - systemBarHeight) { 293 cellCountY++; 294 } 295 } 296 297 mSpringLoadedShrinkFactor = 298 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 299 mDragViewMultiplyColor = res.getColor(R.color.drag_view_multiply_color); 300 301 // if the value is manually specified, use that instead 302 cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX); 303 cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY); 304 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 305 a.recycle(); 306 307 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 308 setHapticFeedbackEnabled(false); 309 310 mLauncher = (Launcher) context; 311 initWorkspace(); 312 313 // Disable multitouch across the workspace/all apps/customize tray 314 setMotionEventSplittingEnabled(true); 315 } 316 317 // estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each 318 // dimension if unsuccessful 319 public int[] estimateItemSize(int hSpan, int vSpan, 320 PendingAddItemInfo pendingItemInfo, boolean springLoaded) { 321 int[] size = new int[2]; 322 if (getChildCount() > 0) { 323 CellLayout cl = (CellLayout) mLauncher.getWorkspace().getChildAt(0); 324 RectF r = estimateItemPosition(cl, pendingItemInfo, 0, 0, hSpan, vSpan); 325 size[0] = (int) r.width(); 326 size[1] = (int) r.height(); 327 if (springLoaded) { 328 size[0] *= mSpringLoadedShrinkFactor; 329 size[1] *= mSpringLoadedShrinkFactor; 330 } 331 return size; 332 } else { 333 size[0] = Integer.MAX_VALUE; 334 size[1] = Integer.MAX_VALUE; 335 return size; 336 } 337 } 338 public RectF estimateItemPosition(CellLayout cl, ItemInfo pendingInfo, 339 int hCell, int vCell, int hSpan, int vSpan) { 340 RectF r = new RectF(); 341 cl.cellToRect(hCell, vCell, hSpan, vSpan, r); 342 if (pendingInfo instanceof PendingAddWidgetInfo) { 343 PendingAddWidgetInfo widgetInfo = (PendingAddWidgetInfo) pendingInfo; 344 Rect p = AppWidgetHostView.getDefaultPaddingForWidget(mContext, 345 widgetInfo.componentName, null); 346 r.top += p.top; 347 r.left += p.left; 348 r.right -= p.right; 349 r.bottom -= p.bottom; 350 } 351 return r; 352 } 353 354 public void buildPageHardwareLayers() { 355 if (getWindowToken() != null) { 356 final int childCount = getChildCount(); 357 for (int i = 0; i < childCount; i++) { 358 CellLayout cl = (CellLayout) getChildAt(i); 359 cl.buildChildrenLayer(); 360 } 361 } 362 } 363 364 public void onDragStart(DragSource source, Object info, int dragAction) { 365 mIsDragOccuring = true; 366 updateChildrenLayersEnabled(); 367 mLauncher.lockScreenOrientationOnLargeUI(); 368 } 369 370 public void onDragEnd() { 371 mIsDragOccuring = false; 372 updateChildrenLayersEnabled(); 373 mLauncher.unlockScreenOrientationOnLargeUI(); 374 } 375 376 /** 377 * Initializes various states for this workspace. 378 */ 379 protected void initWorkspace() { 380 Context context = getContext(); 381 mCurrentPage = mDefaultPage; 382 Launcher.setScreen(mCurrentPage); 383 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 384 mIconCache = app.getIconCache(); 385 mExternalDragOutlinePaint.setAntiAlias(true); 386 setWillNotDraw(false); 387 setChildrenDrawnWithCacheEnabled(true); 388 389 try { 390 final Resources res = getResources(); 391 mBackground = res.getDrawable(R.drawable.apps_customize_bg); 392 } catch (Resources.NotFoundException e) { 393 // In this case, we will skip drawing background protection 394 } 395 396 mChangeStateAnimationListener = new AnimatorListenerAdapter() { 397 @Override 398 public void onAnimationStart(Animator animation) { 399 mIsSwitchingState = true; 400 } 401 402 @Override 403 public void onAnimationEnd(Animator animation) { 404 mIsSwitchingState = false; 405 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 406 updateChildrenLayersEnabled(); 407 } 408 }; 409 410 mWallpaperOffset = new WallpaperOffsetInterpolator(); 411 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 412 mDisplayWidth = display.getWidth(); 413 mDisplayHeight = display.getHeight(); 414 mWallpaperTravelWidth = (int) (mDisplayWidth * 415 wallpaperTravelToScreenWidthRatio(mDisplayWidth, mDisplayHeight)); 416 417 mFlingThresholdVelocity = (int) (FLING_THRESHOLD_VELOCITY * mDensity); 418 419 } 420 421 @Override 422 protected int getScrollMode() { 423 return SmoothPagedView.X_LARGE_MODE; 424 } 425 426 @Override 427 protected void onViewAdded(View child) { 428 super.onViewAdded(child); 429 if (!(child instanceof CellLayout)) { 430 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 431 } 432 CellLayout cl = ((CellLayout) child); 433 cl.setOnInterceptTouchListener(this); 434 cl.setClickable(true); 435 cl.enableHardwareLayers(); 436 } 437 438 /** 439 * @return The open folder on the current screen, or null if there is none 440 */ 441 Folder getOpenFolder() { 442 DragLayer dragLayer = mLauncher.getDragLayer(); 443 int count = dragLayer.getChildCount(); 444 for (int i = 0; i < count; i++) { 445 View child = dragLayer.getChildAt(i); 446 if (child instanceof Folder) { 447 Folder folder = (Folder) child; 448 if (folder.getInfo().opened) 449 return folder; 450 } 451 } 452 return null; 453 } 454 455 boolean isTouchActive() { 456 return mTouchState != TOUCH_STATE_REST; 457 } 458 459 /** 460 * Adds the specified child in the specified screen. The position and dimension of 461 * the child are defined by x, y, spanX and spanY. 462 * 463 * @param child The child to add in one of the workspace's screens. 464 * @param screen The screen in which to add the child. 465 * @param x The X position of the child in the screen's grid. 466 * @param y The Y position of the child in the screen's grid. 467 * @param spanX The number of cells spanned horizontally by the child. 468 * @param spanY The number of cells spanned vertically by the child. 469 */ 470 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY) { 471 addInScreen(child, container, screen, x, y, spanX, spanY, false); 472 } 473 474 /** 475 * Adds the specified child in the specified screen. The position and dimension of 476 * the child are defined by x, y, spanX and spanY. 477 * 478 * @param child The child to add in one of the workspace's screens. 479 * @param screen The screen in which to add the child. 480 * @param x The X position of the child in the screen's grid. 481 * @param y The Y position of the child in the screen's grid. 482 * @param spanX The number of cells spanned horizontally by the child. 483 * @param spanY The number of cells spanned vertically by the child. 484 * @param insert When true, the child is inserted at the beginning of the children list. 485 */ 486 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY, 487 boolean insert) { 488 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 489 if (screen < 0 || screen >= getChildCount()) { 490 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 491 + " (was " + screen + "); skipping child"); 492 return; 493 } 494 } 495 496 final CellLayout layout; 497 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 498 layout = mLauncher.getHotseat().getLayout(); 499 child.setOnKeyListener(null); 500 501 // Hide folder title in the hotseat 502 if (child instanceof FolderIcon) { 503 ((FolderIcon) child).setTextVisible(false); 504 } 505 506 if (screen < 0) { 507 screen = mLauncher.getHotseat().getOrderInHotseat(x, y); 508 } else { 509 // Note: We do this to ensure that the hotseat is always laid out in the orientation 510 // of the hotseat in order regardless of which orientation they were added 511 x = mLauncher.getHotseat().getCellXFromOrder(screen); 512 y = mLauncher.getHotseat().getCellYFromOrder(screen); 513 } 514 } else { 515 // Show folder title if not in the hotseat 516 if (child instanceof FolderIcon) { 517 ((FolderIcon) child).setTextVisible(true); 518 } 519 520 layout = (CellLayout) getChildAt(screen); 521 child.setOnKeyListener(new IconKeyEventListener()); 522 } 523 524 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 525 if (lp == null) { 526 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 527 } else { 528 lp.cellX = x; 529 lp.cellY = y; 530 lp.cellHSpan = spanX; 531 lp.cellVSpan = spanY; 532 } 533 534 if (spanX < 0 && spanY < 0) { 535 lp.isLockedToGrid = false; 536 } 537 538 // Get the canonical child id to uniquely represent this view in this screen 539 int childId = LauncherModel.getCellLayoutChildId(container, screen, x, y, spanX, spanY); 540 boolean markCellsAsOccupied = !(child instanceof Folder); 541 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 542 // TODO: This branch occurs when the workspace is adding views 543 // outside of the defined grid 544 // maybe we should be deleting these items from the LauncherModel? 545 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 546 } 547 548 if (!(child instanceof Folder)) { 549 child.setHapticFeedbackEnabled(false); 550 child.setOnLongClickListener(mLongClickListener); 551 } 552 if (child instanceof DropTarget) { 553 mDragController.addDropTarget((DropTarget) child); 554 } 555 } 556 557 /** 558 * Check if the point (x, y) hits a given page. 559 */ 560 private boolean hitsPage(int index, float x, float y) { 561 final View page = getChildAt(index); 562 if (page != null) { 563 float[] localXY = { x, y }; 564 mapPointFromSelfToChild(page, localXY); 565 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 566 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 567 } 568 return false; 569 } 570 571 @Override 572 protected boolean hitsPreviousPage(float x, float y) { 573 // mNextPage is set to INVALID_PAGE whenever we are stationary. 574 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 575 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 576 577 // Only allow tap to next page on large devices, where there's significant margin outside 578 // the active workspace 579 return LauncherApplication.isScreenLarge() && hitsPage(current - 1, x, y); 580 } 581 582 @Override 583 protected boolean hitsNextPage(float x, float y) { 584 // mNextPage is set to INVALID_PAGE whenever we are stationary. 585 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 586 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 587 588 // Only allow tap to next page on large devices, where there's significant margin outside 589 // the active workspace 590 return LauncherApplication.isScreenLarge() && hitsPage(current + 1, x, y); 591 } 592 593 /** 594 * Called directly from a CellLayout (not by the framework), after we've been added as a 595 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 596 * that it should intercept touch events, which is not something that is normally supported. 597 */ 598 @Override 599 public boolean onTouch(View v, MotionEvent event) { 600 return (isSmall() || mIsSwitchingState); 601 } 602 603 public boolean isSwitchingState() { 604 return mIsSwitchingState; 605 } 606 607 protected void onWindowVisibilityChanged (int visibility) { 608 mLauncher.onWindowVisibilityChanged(visibility); 609 } 610 611 @Override 612 public boolean dispatchUnhandledMove(View focused, int direction) { 613 if (isSmall() || mIsSwitchingState) { 614 // when the home screens are shrunken, shouldn't allow side-scrolling 615 return false; 616 } 617 return super.dispatchUnhandledMove(focused, direction); 618 } 619 620 @Override 621 public boolean onInterceptTouchEvent(MotionEvent ev) { 622 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 623 case MotionEvent.ACTION_DOWN: 624 mXDown = ev.getX(); 625 mYDown = ev.getY(); 626 break; 627 case MotionEvent.ACTION_POINTER_UP: 628 case MotionEvent.ACTION_UP: 629 if (mTouchState == TOUCH_STATE_REST) { 630 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 631 if (!currentPage.lastDownOnOccupiedCell()) { 632 onWallpaperTap(ev); 633 } 634 } 635 } 636 return super.onInterceptTouchEvent(ev); 637 } 638 639 @Override 640 protected void determineScrollingStart(MotionEvent ev) { 641 if (!isSmall() && !mIsSwitchingState) { 642 float deltaX = Math.abs(ev.getX() - mXDown); 643 float deltaY = Math.abs(ev.getY() - mYDown); 644 645 if (Float.compare(deltaX, 0f) == 0) return; 646 647 float slope = deltaY / deltaX; 648 float theta = (float) Math.atan(slope); 649 650 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 651 cancelCurrentPageLongPress(); 652 } 653 654 if (theta > MAX_SWIPE_ANGLE) { 655 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 656 return; 657 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 658 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 659 // increase the touch slop to make it harder to begin scrolling the workspace. This 660 // results in vertically scrolling widgets to more easily. The higher the angle, the 661 // more we increase touch slop. 662 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 663 float extraRatio = (float) 664 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 665 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 666 } else { 667 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 668 super.determineScrollingStart(ev); 669 } 670 } 671 } 672 673 @Override 674 protected boolean isScrollingIndicatorEnabled() { 675 return mState != State.SPRING_LOADED; 676 } 677 678 protected void onPageBeginMoving() { 679 super.onPageBeginMoving(); 680 681 if (isHardwareAccelerated()) { 682 updateChildrenLayersEnabled(); 683 } else { 684 if (mNextPage != INVALID_PAGE) { 685 // we're snapping to a particular screen 686 enableChildrenCache(mCurrentPage, mNextPage); 687 } else { 688 // this is when user is actively dragging a particular screen, they might 689 // swipe it either left or right (but we won't advance by more than one screen) 690 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 691 } 692 } 693 694 // Only show page outlines as we pan if we are on large screen 695 if (LauncherApplication.isScreenLarge()) { 696 showOutlines(); 697 } 698 } 699 700 protected void onPageEndMoving() { 701 super.onPageEndMoving(); 702 703 if (isHardwareAccelerated()) { 704 updateChildrenLayersEnabled(); 705 } else { 706 clearChildrenCache(); 707 } 708 709 // Hide the outlines, as long as we're not dragging 710 if (!mDragController.dragging()) { 711 // Only hide page outlines as we pan if we are on large screen 712 if (LauncherApplication.isScreenLarge()) { 713 hideOutlines(); 714 } 715 } 716 mOverScrollMaxBackgroundAlpha = 0.0f; 717 mOverScrollPageIndex = -1; 718 719 if (mDelayedResizeRunnable != null) { 720 mDelayedResizeRunnable.run(); 721 mDelayedResizeRunnable = null; 722 } 723 } 724 725 @Override 726 protected void notifyPageSwitchListener() { 727 super.notifyPageSwitchListener(); 728 Launcher.setScreen(mCurrentPage); 729 }; 730 731 // As a ratio of screen height, the total distance we want the parallax effect to span 732 // horizontally 733 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 734 float aspectRatio = width / (float) height; 735 736 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 737 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 738 // We will use these two data points to extrapolate how much the wallpaper parallax effect 739 // to span (ie travel) at any aspect ratio: 740 741 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 742 final float ASPECT_RATIO_PORTRAIT = 10/16f; 743 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 744 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 745 746 // To find out the desired width at different aspect ratios, we use the following two 747 // formulas, where the coefficient on x is the aspect ratio (width/height): 748 // (16/10)x + y = 1.5 749 // (10/16)x + y = 1.2 750 // We solve for x and y and end up with a final formula: 751 final float x = 752 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 753 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 754 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 755 return x * aspectRatio + y; 756 } 757 758 // The range of scroll values for Workspace 759 private int getScrollRange() { 760 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 761 } 762 763 protected void setWallpaperDimension() { 764 DisplayMetrics displayMetrics = new DisplayMetrics(); 765 mLauncher.getWindowManager().getDefaultDisplay().getRealMetrics(displayMetrics); 766 final int maxDim = Math.max(displayMetrics.widthPixels, displayMetrics.heightPixels); 767 final int minDim = Math.min(displayMetrics.widthPixels, displayMetrics.heightPixels); 768 769 // We need to ensure that there is enough extra space in the wallpaper for the intended 770 // parallax effects 771 if (LauncherApplication.isScreenLarge()) { 772 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 773 mWallpaperHeight = maxDim; 774 } else { 775 mWallpaperWidth = Math.max((int) (minDim * WALLPAPER_SCREENS_SPAN), maxDim); 776 mWallpaperHeight = maxDim; 777 } 778 new Thread("setWallpaperDimension") { 779 public void run() { 780 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 781 } 782 }.start(); 783 } 784 785 public void setVerticalWallpaperOffset(float offset) { 786 mWallpaperOffset.setFinalY(offset); 787 } 788 public float getVerticalWallpaperOffset() { 789 return mWallpaperOffset.getCurrY(); 790 } 791 public void setHorizontalWallpaperOffset(float offset) { 792 mWallpaperOffset.setFinalX(offset); 793 } 794 public float getHorizontalWallpaperOffset() { 795 return mWallpaperOffset.getCurrX(); 796 } 797 798 private float wallpaperOffsetForCurrentScroll() { 799 // The wallpaper travel width is how far, from left to right, the wallpaper will move 800 // at this orientation. On tablets in portrait mode we don't move all the way to the 801 // edges of the wallpaper, or otherwise the parallax effect would be too strong. 802 int wallpaperTravelWidth = mWallpaperWidth; 803 if (LauncherApplication.isScreenLarge()) { 804 wallpaperTravelWidth = mWallpaperTravelWidth; 805 } 806 807 // Set wallpaper offset steps (1 / (number of screens - 1)) 808 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f); 809 810 // For the purposes of computing the scrollRange and overScrollOffset, we assume 811 // that mLayoutScale is 1. This means that when we're in spring-loaded mode, 812 // there's no discrepancy between the wallpaper offset for a given page. 813 float layoutScale = mLayoutScale; 814 mLayoutScale = 1f; 815 int scrollRange = getScrollRange(); 816 817 // Again, we adjust the wallpaper offset to be consistent between values of mLayoutScale 818 float adjustedScrollX = Math.max(0, Math.min(mScrollX, mMaxScrollX)); 819 adjustedScrollX *= mWallpaperScrollRatio; 820 mLayoutScale = layoutScale; 821 822 float scrollProgress = 823 adjustedScrollX / (float) scrollRange; 824 float offsetInDips = wallpaperTravelWidth * scrollProgress + 825 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 826 float offset = offsetInDips / (float) mWallpaperWidth; 827 return offset; 828 } 829 private void syncWallpaperOffsetWithScroll() { 830 final boolean enableWallpaperEffects = isHardwareAccelerated(); 831 if (enableWallpaperEffects) { 832 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 833 } 834 } 835 836 public void updateWallpaperOffsetImmediately() { 837 mUpdateWallpaperOffsetImmediately = true; 838 } 839 840 private void updateWallpaperOffsets() { 841 boolean updateNow = false; 842 boolean keepUpdating = true; 843 if (mUpdateWallpaperOffsetImmediately) { 844 updateNow = true; 845 keepUpdating = false; 846 mWallpaperOffset.jumpToFinal(); 847 mUpdateWallpaperOffsetImmediately = false; 848 } else { 849 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 850 } 851 if (updateNow) { 852 if (mWindowToken != null) { 853 mWallpaperManager.setWallpaperOffsets(mWindowToken, 854 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 855 } 856 } 857 if (keepUpdating) { 858 fastInvalidate(); 859 } 860 } 861 862 @Override 863 protected void updateCurrentPageScroll() { 864 super.updateCurrentPageScroll(); 865 computeWallpaperScrollRatio(mCurrentPage); 866 } 867 868 @Override 869 protected void snapToPage(int whichPage) { 870 super.snapToPage(whichPage); 871 computeWallpaperScrollRatio(whichPage); 872 } 873 874 private void computeWallpaperScrollRatio(int page) { 875 // Here, we determine what the desired scroll would be with and without a layout scale, 876 // and compute a ratio between the two. This allows us to adjust the wallpaper offset 877 // as though there is no layout scale. 878 float layoutScale = mLayoutScale; 879 int scaled = getChildOffset(page) - getRelativeChildOffset(page); 880 mLayoutScale = 1.0f; 881 float unscaled = getChildOffset(page) - getRelativeChildOffset(page); 882 mLayoutScale = layoutScale; 883 if (scaled > 0) { 884 mWallpaperScrollRatio = (1.0f * unscaled) / scaled; 885 } else { 886 mWallpaperScrollRatio = 1f; 887 } 888 } 889 890 class WallpaperOffsetInterpolator { 891 float mFinalHorizontalWallpaperOffset = 0.0f; 892 float mFinalVerticalWallpaperOffset = 0.5f; 893 float mHorizontalWallpaperOffset = 0.0f; 894 float mVerticalWallpaperOffset = 0.5f; 895 long mLastWallpaperOffsetUpdateTime; 896 boolean mIsMovingFast; 897 boolean mOverrideHorizontalCatchupConstant; 898 float mHorizontalCatchupConstant = 0.35f; 899 float mVerticalCatchupConstant = 0.35f; 900 901 public WallpaperOffsetInterpolator() { 902 } 903 904 public void setOverrideHorizontalCatchupConstant(boolean override) { 905 mOverrideHorizontalCatchupConstant = override; 906 } 907 908 public void setHorizontalCatchupConstant(float f) { 909 mHorizontalCatchupConstant = f; 910 } 911 912 public void setVerticalCatchupConstant(float f) { 913 mVerticalCatchupConstant = f; 914 } 915 916 public boolean computeScrollOffset() { 917 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 918 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 919 mIsMovingFast = false; 920 return false; 921 } 922 boolean isLandscape = mDisplayWidth > mDisplayHeight; 923 924 long currentTime = System.currentTimeMillis(); 925 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 926 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 927 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 928 929 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 930 if (!mIsMovingFast && xdiff > 0.07) { 931 mIsMovingFast = true; 932 } 933 934 float fractionToCatchUpIn1MsHorizontal; 935 if (mOverrideHorizontalCatchupConstant) { 936 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 937 } else if (mIsMovingFast) { 938 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 939 } else { 940 // slow 941 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 942 } 943 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 944 945 fractionToCatchUpIn1MsHorizontal /= 33f; 946 fractionToCatchUpIn1MsVertical /= 33f; 947 948 final float UPDATE_THRESHOLD = 0.00001f; 949 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 950 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 951 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 952 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 953 954 // Don't have any lag between workspace and wallpaper on non-large devices 955 if (!LauncherApplication.isScreenLarge() || jumpToFinalValue) { 956 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 957 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 958 } else { 959 float percentToCatchUpVertical = 960 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 961 float percentToCatchUpHorizontal = 962 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 963 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 964 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 965 } 966 967 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 968 return true; 969 } 970 971 public float getCurrX() { 972 return mHorizontalWallpaperOffset; 973 } 974 975 public float getFinalX() { 976 return mFinalHorizontalWallpaperOffset; 977 } 978 979 public float getCurrY() { 980 return mVerticalWallpaperOffset; 981 } 982 983 public float getFinalY() { 984 return mFinalVerticalWallpaperOffset; 985 } 986 987 public void setFinalX(float x) { 988 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 989 } 990 991 public void setFinalY(float y) { 992 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 993 } 994 995 public void jumpToFinal() { 996 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 997 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 998 } 999 } 1000 1001 @Override 1002 public void computeScroll() { 1003 super.computeScroll(); 1004 syncWallpaperOffsetWithScroll(); 1005 } 1006 1007 void showOutlines() { 1008 if (!isSmall() && !mIsSwitchingState) { 1009 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1010 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1011 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 1012 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 1013 mChildrenOutlineFadeInAnimation.start(); 1014 } 1015 } 1016 1017 void hideOutlines() { 1018 if (!isSmall() && !mIsSwitchingState) { 1019 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1020 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1021 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 1022 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 1023 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 1024 mChildrenOutlineFadeOutAnimation.start(); 1025 } 1026 } 1027 1028 public void showOutlinesTemporarily() { 1029 if (!mIsPageMoving && !isTouchActive()) { 1030 snapToPage(mCurrentPage); 1031 } 1032 } 1033 1034 public void setChildrenOutlineAlpha(float alpha) { 1035 mChildrenOutlineAlpha = alpha; 1036 for (int i = 0; i < getChildCount(); i++) { 1037 CellLayout cl = (CellLayout) getChildAt(i); 1038 cl.setBackgroundAlpha(alpha); 1039 } 1040 } 1041 1042 public float getChildrenOutlineAlpha() { 1043 return mChildrenOutlineAlpha; 1044 } 1045 1046 void disableBackground() { 1047 mDrawBackground = false; 1048 } 1049 void enableBackground() { 1050 mDrawBackground = true; 1051 } 1052 1053 private void animateBackgroundGradient(float finalAlpha, boolean animated) { 1054 if (mBackground == null) return; 1055 if (mBackgroundFadeInAnimation != null) { 1056 mBackgroundFadeInAnimation.cancel(); 1057 mBackgroundFadeInAnimation = null; 1058 } 1059 if (mBackgroundFadeOutAnimation != null) { 1060 mBackgroundFadeOutAnimation.cancel(); 1061 mBackgroundFadeOutAnimation = null; 1062 } 1063 float startAlpha = getBackgroundAlpha(); 1064 if (finalAlpha != startAlpha) { 1065 if (animated) { 1066 mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(startAlpha, finalAlpha); 1067 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1068 public void onAnimationUpdate(ValueAnimator animation) { 1069 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1070 } 1071 }); 1072 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1073 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1074 mBackgroundFadeOutAnimation.start(); 1075 } else { 1076 setBackgroundAlpha(finalAlpha); 1077 } 1078 } 1079 } 1080 1081 public void setBackgroundAlpha(float alpha) { 1082 if (alpha != mBackgroundAlpha) { 1083 mBackgroundAlpha = alpha; 1084 invalidate(); 1085 } 1086 } 1087 1088 public float getBackgroundAlpha() { 1089 return mBackgroundAlpha; 1090 } 1091 1092 /** 1093 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 1094 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 1095 * as being larger. This method computes what offset the rotated view should be translated 1096 * in order to minimize this perceived gap. 1097 * @param degrees Angle of the view 1098 * @param width Width of the view 1099 * @param height Height of the view 1100 * @return Offset to be used in a View.setTranslationX() call 1101 */ 1102 private float getOffsetXForRotation(float degrees, int width, int height) { 1103 mMatrix.reset(); 1104 mCamera.save(); 1105 mCamera.rotateY(Math.abs(degrees)); 1106 mCamera.getMatrix(mMatrix); 1107 mCamera.restore(); 1108 1109 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 1110 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 1111 mTempFloat2[0] = width; 1112 mTempFloat2[1] = height; 1113 mMatrix.mapPoints(mTempFloat2); 1114 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 1115 } 1116 1117 float backgroundAlphaInterpolator(float r) { 1118 float pivotA = 0.1f; 1119 float pivotB = 0.4f; 1120 if (r < pivotA) { 1121 return 0; 1122 } else if (r > pivotB) { 1123 return 1.0f; 1124 } else { 1125 return (r - pivotA)/(pivotB - pivotA); 1126 } 1127 } 1128 1129 float overScrollBackgroundAlphaInterpolator(float r) { 1130 float threshold = 0.08f; 1131 1132 if (r > mOverScrollMaxBackgroundAlpha) { 1133 mOverScrollMaxBackgroundAlpha = r; 1134 } else if (r < mOverScrollMaxBackgroundAlpha) { 1135 r = mOverScrollMaxBackgroundAlpha; 1136 } 1137 1138 return Math.min(r / threshold, 1.0f); 1139 } 1140 1141 private void screenScrolledLargeUI(int screenCenter) { 1142 if (isSwitchingState()) return; 1143 boolean isInOverscroll = false; 1144 for (int i = 0; i < getChildCount(); i++) { 1145 CellLayout cl = (CellLayout) getChildAt(i); 1146 if (cl != null) { 1147 float scrollProgress = getScrollProgress(screenCenter, cl, i); 1148 float rotation = WORKSPACE_ROTATION * scrollProgress; 1149 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1150 1151 // If the current page (i) is being over scrolled, we use a different 1152 // set of rules for setting the background alpha multiplier. 1153 if (!isSmall()) { 1154 if ((mOverScrollX < 0 && i == 0) || (mOverScrollX > mMaxScrollX && 1155 i == getChildCount() -1)) { 1156 isInOverscroll = true; 1157 rotation *= -1; 1158 cl.setBackgroundAlphaMultiplier( 1159 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 1160 mOverScrollPageIndex = i; 1161 cl.setOverScrollAmount(Math.abs(scrollProgress), i == 0); 1162 cl.setPivotX(cl.getMeasuredWidth() * (i == 0 ? 0.75f : 0.25f)); 1163 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1164 cl.setOverscrollTransformsDirty(true); 1165 } else if (mOverScrollPageIndex != i) { 1166 cl.setBackgroundAlphaMultiplier( 1167 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1168 } 1169 } 1170 cl.setFastTranslationX(translationX); 1171 cl.setFastRotationY(rotation); 1172 if (mFadeInAdjacentScreens && !isSmall()) { 1173 float alpha = 1 - Math.abs(scrollProgress); 1174 cl.setFastAlpha(alpha); 1175 } 1176 cl.fastInvalidate(); 1177 } 1178 } 1179 if (!isSwitchingState() && !isInOverscroll) { 1180 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1181 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1182 } 1183 invalidate(); 1184 } 1185 1186 private void screenScrolledStandardUI(int screenCenter) { 1187 if (mOverScrollX < 0 || mOverScrollX > mMaxScrollX) { 1188 int index = mOverScrollX < 0 ? 0 : getChildCount() - 1; 1189 CellLayout cl = (CellLayout) getChildAt(index); 1190 float scrollProgress = getScrollProgress(screenCenter, cl, index); 1191 cl.setOverScrollAmount(Math.abs(scrollProgress), index == 0); 1192 float rotation = - WORKSPACE_OVERSCROLL_ROTATION * scrollProgress; 1193 cl.setCameraDistance(mDensity * CAMERA_DISTANCE); 1194 cl.setPivotX(cl.getMeasuredWidth() * (index == 0 ? 0.75f : 0.25f)); 1195 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1196 cl.setRotationY(rotation); 1197 cl.setOverscrollTransformsDirty(true); 1198 setFadeForOverScroll(Math.abs(scrollProgress)); 1199 } else { 1200 if (mOverscrollFade != 0) { 1201 setFadeForOverScroll(0); 1202 } 1203 // We don't want to mess with the translations during transitions 1204 if (!isSwitchingState()) { 1205 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1206 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1207 } 1208 } 1209 } 1210 1211 @Override 1212 protected void screenScrolled(int screenCenter) { 1213 if (LauncherApplication.isScreenLarge()) { 1214 // We don't call super.screenScrolled() here because we handle the adjacent pages alpha 1215 // ourselves (for efficiency), and there are no scrolling indicators to update. 1216 screenScrolledLargeUI(screenCenter); 1217 } else { 1218 super.screenScrolled(screenCenter); 1219 screenScrolledStandardUI(screenCenter); 1220 } 1221 } 1222 1223 @Override 1224 protected void overScroll(float amount) { 1225 if (LauncherApplication.isScreenLarge()) { 1226 dampedOverScroll(amount); 1227 } else { 1228 acceleratedOverScroll(amount); 1229 } 1230 } 1231 1232 protected void onAttachedToWindow() { 1233 super.onAttachedToWindow(); 1234 mWindowToken = getWindowToken(); 1235 computeScroll(); 1236 mDragController.setWindowToken(mWindowToken); 1237 } 1238 1239 protected void onDetachedFromWindow() { 1240 mWindowToken = null; 1241 } 1242 1243 @Override 1244 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1245 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1246 mUpdateWallpaperOffsetImmediately = true; 1247 } 1248 super.onLayout(changed, left, top, right, bottom); 1249 } 1250 1251 @Override 1252 protected void onDraw(Canvas canvas) { 1253 updateWallpaperOffsets(); 1254 1255 // Draw the background gradient if necessary 1256 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1257 int alpha = (int) (mBackgroundAlpha * 255); 1258 mBackground.setAlpha(alpha); 1259 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1260 getMeasuredHeight()); 1261 mBackground.draw(canvas); 1262 } 1263 1264 super.onDraw(canvas); 1265 } 1266 1267 boolean isDrawingBackgroundGradient() { 1268 return (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground); 1269 } 1270 1271 public void scrollTo (int x, int y) { 1272 super.scrollTo(x, y); 1273 syncChildrenLayersEnabledOnVisiblePages(); 1274 } 1275 1276 // This method just applies the value mChildrenLayersEnabled to all the pages that 1277 // will be rendered on the next frame. 1278 // We do this because calling setChildrenLayersEnabled on a view that's not 1279 // visible/rendered causes slowdowns on some graphics cards 1280 private void syncChildrenLayersEnabledOnVisiblePages() { 1281 if (mChildrenLayersEnabled) { 1282 getVisiblePages(mTempVisiblePagesRange); 1283 final int leftScreen = mTempVisiblePagesRange[0]; 1284 final int rightScreen = mTempVisiblePagesRange[1]; 1285 if (leftScreen != -1 && rightScreen != -1) { 1286 for (int i = leftScreen; i <= rightScreen; i++) { 1287 ViewGroup page = (ViewGroup) getPageAt(i); 1288 if (page.getVisibility() == VISIBLE && 1289 page.getAlpha() > ViewConfiguration.ALPHA_THRESHOLD) { 1290 ((ViewGroup)getPageAt(i)).setChildrenLayersEnabled(true); 1291 } 1292 } 1293 } 1294 } 1295 } 1296 1297 @Override 1298 protected void dispatchDraw(Canvas canvas) { 1299 super.dispatchDraw(canvas); 1300 1301 if (mInScrollArea && !LauncherApplication.isScreenLarge()) { 1302 final int width = getWidth(); 1303 final int height = getHeight(); 1304 final int pageHeight = getChildAt(0).getHeight(); 1305 1306 // Set the height of the outline to be the height of the page 1307 final int offset = (height - pageHeight - mPaddingTop - mPaddingBottom) / 2; 1308 final int paddingTop = mPaddingTop + offset; 1309 final int paddingBottom = mPaddingBottom + offset; 1310 1311 final CellLayout leftPage = (CellLayout) getChildAt(mCurrentPage - 1); 1312 final CellLayout rightPage = (CellLayout) getChildAt(mCurrentPage + 1); 1313 1314 if (leftPage != null && leftPage.getIsDragOverlapping()) { 1315 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left_holo); 1316 d.setBounds(mScrollX, paddingTop, mScrollX + d.getIntrinsicWidth(), 1317 height - paddingBottom); 1318 d.draw(canvas); 1319 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 1320 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right_holo); 1321 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), paddingTop, mScrollX + width, 1322 height - paddingBottom); 1323 d.draw(canvas); 1324 } 1325 } 1326 } 1327 1328 @Override 1329 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1330 if (!mLauncher.isAllAppsVisible()) { 1331 final Folder openFolder = getOpenFolder(); 1332 if (openFolder != null) { 1333 return openFolder.requestFocus(direction, previouslyFocusedRect); 1334 } else { 1335 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1336 } 1337 } 1338 return false; 1339 } 1340 1341 @Override 1342 public int getDescendantFocusability() { 1343 if (isSmall()) { 1344 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1345 } 1346 return super.getDescendantFocusability(); 1347 } 1348 1349 @Override 1350 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1351 if (!mLauncher.isAllAppsVisible()) { 1352 final Folder openFolder = getOpenFolder(); 1353 if (openFolder != null) { 1354 openFolder.addFocusables(views, direction); 1355 } else { 1356 super.addFocusables(views, direction, focusableMode); 1357 } 1358 } 1359 } 1360 1361 public boolean isSmall() { 1362 return mState == State.SMALL || mState == State.SPRING_LOADED; 1363 } 1364 1365 void enableChildrenCache(int fromPage, int toPage) { 1366 if (fromPage > toPage) { 1367 final int temp = fromPage; 1368 fromPage = toPage; 1369 toPage = temp; 1370 } 1371 1372 final int screenCount = getChildCount(); 1373 1374 fromPage = Math.max(fromPage, 0); 1375 toPage = Math.min(toPage, screenCount - 1); 1376 1377 for (int i = fromPage; i <= toPage; i++) { 1378 final CellLayout layout = (CellLayout) getChildAt(i); 1379 layout.setChildrenDrawnWithCacheEnabled(true); 1380 layout.setChildrenDrawingCacheEnabled(true); 1381 } 1382 } 1383 1384 void clearChildrenCache() { 1385 final int screenCount = getChildCount(); 1386 for (int i = 0; i < screenCount; i++) { 1387 final CellLayout layout = (CellLayout) getChildAt(i); 1388 layout.setChildrenDrawnWithCacheEnabled(false); 1389 // In software mode, we don't want the items to continue to be drawn into bitmaps 1390 if (!isHardwareAccelerated()) { 1391 layout.setChildrenDrawingCacheEnabled(false); 1392 } 1393 } 1394 } 1395 1396 private void updateChildrenLayersEnabled() { 1397 boolean small = isSmall() || mIsSwitchingState; 1398 boolean dragging = mAnimatingViewIntoPlace || mIsDragOccuring; 1399 boolean enableChildrenLayers = small || dragging || isPageMoving(); 1400 1401 if (enableChildrenLayers != mChildrenLayersEnabled) { 1402 mChildrenLayersEnabled = enableChildrenLayers; 1403 // calling setChildrenLayersEnabled on a view that's not visible/rendered 1404 // causes slowdowns on some graphics cards, so we only disable it here and leave 1405 // the enabling to dispatchDraw 1406 if (!enableChildrenLayers) { 1407 for (int i = 0; i < getPageCount(); i++) { 1408 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(false); 1409 } 1410 } 1411 } 1412 } 1413 1414 protected void onWallpaperTap(MotionEvent ev) { 1415 final int[] position = mTempCell; 1416 getLocationOnScreen(position); 1417 1418 int pointerIndex = ev.getActionIndex(); 1419 position[0] += (int) ev.getX(pointerIndex); 1420 position[1] += (int) ev.getY(pointerIndex); 1421 1422 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1423 ev.getAction() == MotionEvent.ACTION_UP 1424 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1425 position[0], position[1], 0, null); 1426 } 1427 1428 /* 1429 * This interpolator emulates the rate at which the perceived scale of an object changes 1430 * as its distance from a camera increases. When this interpolator is applied to a scale 1431 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1432 * from the camera. 1433 */ 1434 static class ZInterpolator implements TimeInterpolator { 1435 private float focalLength; 1436 1437 public ZInterpolator(float foc) { 1438 focalLength = foc; 1439 } 1440 1441 public float getInterpolation(float input) { 1442 return (1.0f - focalLength / (focalLength + input)) / 1443 (1.0f - focalLength / (focalLength + 1.0f)); 1444 } 1445 } 1446 1447 /* 1448 * The exact reverse of ZInterpolator. 1449 */ 1450 static class InverseZInterpolator implements TimeInterpolator { 1451 private ZInterpolator zInterpolator; 1452 public InverseZInterpolator(float foc) { 1453 zInterpolator = new ZInterpolator(foc); 1454 } 1455 public float getInterpolation(float input) { 1456 return 1 - zInterpolator.getInterpolation(1 - input); 1457 } 1458 } 1459 1460 /* 1461 * ZInterpolator compounded with an ease-out. 1462 */ 1463 static class ZoomOutInterpolator implements TimeInterpolator { 1464 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(0.75f); 1465 private final ZInterpolator zInterpolator = new ZInterpolator(0.13f); 1466 1467 public float getInterpolation(float input) { 1468 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1469 } 1470 } 1471 1472 /* 1473 * InvereZInterpolator compounded with an ease-out. 1474 */ 1475 static class ZoomInInterpolator implements TimeInterpolator { 1476 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1477 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1478 1479 public float getInterpolation(float input) { 1480 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1481 } 1482 } 1483 1484 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1485 1486 /* 1487 * 1488 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1489 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1490 * 1491 * These methods mark the appropriate pages as accepting drops (which alters their visual 1492 * appearance). 1493 * 1494 */ 1495 public void onDragStartedWithItem(View v) { 1496 final Canvas canvas = new Canvas(); 1497 1498 // We need to add extra padding to the bitmap to make room for the glow effect 1499 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1500 1501 // The outline is used to visualize where the item will land if dropped 1502 mDragOutline = createDragOutline(v, canvas, bitmapPadding); 1503 } 1504 1505 public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, Paint alphaClipPaint) { 1506 final Canvas canvas = new Canvas(); 1507 1508 // We need to add extra padding to the bitmap to make room for the glow effect 1509 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1510 1511 int[] size = estimateItemSize(info.spanX, info.spanY, info, false); 1512 1513 // The outline is used to visualize where the item will land if dropped 1514 mDragOutline = createDragOutline(b, canvas, bitmapPadding, size[0], size[1], alphaClipPaint); 1515 } 1516 1517 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1518 // never dragged over 1519 public void onDragStopped(boolean success) { 1520 // In the success case, DragController has already called onDragExit() 1521 if (!success) { 1522 doDragExit(null); 1523 } 1524 } 1525 1526 public void exitWidgetResizeMode() { 1527 DragLayer dragLayer = mLauncher.getDragLayer(); 1528 dragLayer.clearAllResizeFrames(); 1529 } 1530 1531 private void initAnimationArrays() { 1532 final int childCount = getChildCount(); 1533 if (mOldTranslationXs != null) return; 1534 mOldTranslationXs = new float[childCount]; 1535 mOldTranslationYs = new float[childCount]; 1536 mOldScaleXs = new float[childCount]; 1537 mOldScaleYs = new float[childCount]; 1538 mOldBackgroundAlphas = new float[childCount]; 1539 mOldBackgroundAlphaMultipliers = new float[childCount]; 1540 mOldAlphas = new float[childCount]; 1541 mOldRotationYs = new float[childCount]; 1542 mNewTranslationXs = new float[childCount]; 1543 mNewTranslationYs = new float[childCount]; 1544 mNewScaleXs = new float[childCount]; 1545 mNewScaleYs = new float[childCount]; 1546 mNewBackgroundAlphas = new float[childCount]; 1547 mNewBackgroundAlphaMultipliers = new float[childCount]; 1548 mNewAlphas = new float[childCount]; 1549 mNewRotationYs = new float[childCount]; 1550 } 1551 1552 Animator getChangeStateAnimation(final State state, boolean animated) { 1553 return getChangeStateAnimation(state, animated, 0); 1554 } 1555 1556 Animator getChangeStateAnimation(final State state, boolean animated, int delay) { 1557 if (mState == state) { 1558 return null; 1559 } 1560 1561 // Initialize animation arrays for the first time if necessary 1562 initAnimationArrays(); 1563 1564 AnimatorSet anim = animated ? new AnimatorSet() : null; 1565 1566 // Stop any scrolling, move to the current page right away 1567 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1568 1569 final State oldState = mState; 1570 final boolean oldStateIsNormal = (oldState == State.NORMAL); 1571 final boolean oldStateIsSmall = (oldState == State.SMALL); 1572 mState = state; 1573 final boolean stateIsNormal = (state == State.NORMAL); 1574 final boolean stateIsSpringLoaded = (state == State.SPRING_LOADED); 1575 final boolean stateIsSmall = (state == State.SMALL); 1576 float finalScaleFactor = 1.0f; 1577 float finalBackgroundAlpha = stateIsSpringLoaded ? 1.0f : 0f; 1578 float translationX = 0; 1579 float translationY = 0; 1580 boolean zoomIn = true; 1581 1582 if (state != State.NORMAL) { 1583 finalScaleFactor = mSpringLoadedShrinkFactor - (stateIsSmall ? 0.1f : 0); 1584 if (oldStateIsNormal && stateIsSmall) { 1585 zoomIn = false; 1586 setLayoutScale(finalScaleFactor); 1587 updateChildrenLayersEnabled(); 1588 } else { 1589 finalBackgroundAlpha = 1.0f; 1590 setLayoutScale(finalScaleFactor); 1591 } 1592 } else { 1593 setLayoutScale(1.0f); 1594 } 1595 1596 final int duration = zoomIn ? 1597 getResources().getInteger(R.integer.config_workspaceUnshrinkTime) : 1598 getResources().getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1599 for (int i = 0; i < getChildCount(); i++) { 1600 final CellLayout cl = (CellLayout) getChildAt(i); 1601 float rotation = 0f; 1602 float initialAlpha = cl.getAlpha(); 1603 float finalAlphaMultiplierValue = 1f; 1604 float finalAlpha = (!mFadeInAdjacentScreens || stateIsSpringLoaded || 1605 (i == mCurrentPage)) ? 1f : 0f; 1606 1607 // Determine the pages alpha during the state transition 1608 if ((oldStateIsSmall && stateIsNormal) || 1609 (oldStateIsNormal && stateIsSmall)) { 1610 // To/from workspace - only show the current page unless the transition is not 1611 // animated and the animation end callback below doesn't run 1612 if (i == mCurrentPage || !animated) { 1613 finalAlpha = 1f; 1614 finalAlphaMultiplierValue = 0f; 1615 } else { 1616 initialAlpha = 0f; 1617 finalAlpha = 0f; 1618 } 1619 } 1620 1621 // Update the rotation of the screen (don't apply rotation on Phone UI) 1622 if (LauncherApplication.isScreenLarge()) { 1623 if (i < mCurrentPage) { 1624 rotation = WORKSPACE_ROTATION; 1625 } else if (i > mCurrentPage) { 1626 rotation = -WORKSPACE_ROTATION; 1627 } 1628 } 1629 1630 // If the screen is not xlarge, then don't rotate the CellLayouts 1631 // NOTE: If we don't update the side pages alpha, then we should not hide the side 1632 // pages. see unshrink(). 1633 if (LauncherApplication.isScreenLarge()) { 1634 translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1635 } 1636 1637 mOldAlphas[i] = initialAlpha; 1638 mNewAlphas[i] = finalAlpha; 1639 if (animated) { 1640 mOldTranslationXs[i] = cl.getTranslationX(); 1641 mOldTranslationYs[i] = cl.getTranslationY(); 1642 mOldScaleXs[i] = cl.getScaleX(); 1643 mOldScaleYs[i] = cl.getScaleY(); 1644 mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1645 mOldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1646 mOldRotationYs[i] = cl.getRotationY(); 1647 1648 mNewTranslationXs[i] = translationX; 1649 mNewTranslationYs[i] = translationY; 1650 mNewScaleXs[i] = finalScaleFactor; 1651 mNewScaleYs[i] = finalScaleFactor; 1652 mNewBackgroundAlphas[i] = finalBackgroundAlpha; 1653 mNewBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1654 mNewRotationYs[i] = rotation; 1655 } else { 1656 cl.setTranslationX(translationX); 1657 cl.setTranslationY(translationY); 1658 cl.setScaleX(finalScaleFactor); 1659 cl.setScaleY(finalScaleFactor); 1660 cl.setBackgroundAlpha(finalBackgroundAlpha); 1661 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1662 cl.setAlpha(finalAlpha); 1663 cl.setRotationY(rotation); 1664 mChangeStateAnimationListener.onAnimationEnd(null); 1665 } 1666 } 1667 1668 if (animated) { 1669 ValueAnimator animWithInterpolator = 1670 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1671 1672 if (zoomIn) { 1673 animWithInterpolator.setInterpolator(mZoomInInterpolator); 1674 } 1675 1676 animWithInterpolator.addListener(new AnimatorListenerAdapter() { 1677 @Override 1678 public void onAnimationEnd(android.animation.Animator animation) { 1679 // The above code to determine initialAlpha and finalAlpha will ensure that only 1680 // the current page is visible during (and subsequently, after) the transition 1681 // animation. If fade adjacent pages is disabled, then re-enable the page 1682 // visibility after the transition animation. 1683 if (!mFadeInAdjacentScreens && stateIsNormal && oldStateIsSmall) { 1684 for (int i = 0; i < getChildCount(); i++) { 1685 final CellLayout cl = (CellLayout) getChildAt(i); 1686 cl.setAlpha(1f); 1687 } 1688 } 1689 } 1690 }); 1691 for (int i = 0; i < getChildCount(); i++) { 1692 invalidate(); 1693 if (mOldAlphas[i] == 0 && mNewAlphas[i] == 0) { 1694 final CellLayout cl = (CellLayout) getChildAt(i); 1695 cl.fastInvalidate(); 1696 cl.setFastTranslationX(mNewTranslationXs[i]); 1697 cl.setFastTranslationY(mNewTranslationYs[i]); 1698 cl.setFastScaleX(mNewScaleXs[i]); 1699 cl.setFastScaleY(mNewScaleYs[i]); 1700 cl.setFastBackgroundAlpha(mNewBackgroundAlphas[i]); 1701 cl.setBackgroundAlphaMultiplier(mNewBackgroundAlphaMultipliers[i]); 1702 cl.setFastAlpha(mNewAlphas[i]); 1703 } 1704 } 1705 1706 animWithInterpolator.addUpdateListener(new LauncherAnimatorUpdateListener() { 1707 public void onAnimationUpdate(float a, float b) { 1708 mTransitionProgress = b; 1709 if (b == 0f) { 1710 // an optimization, but not required 1711 return; 1712 } 1713 invalidate(); 1714 for (int i = 0; i < getChildCount(); i++) { 1715 if (mOldAlphas[i] != 0 || mNewAlphas[i] != 0) { 1716 final CellLayout cl = (CellLayout) getChildAt(i); 1717 cl.fastInvalidate(); 1718 cl.setFastTranslationX( 1719 a * mOldTranslationXs[i] + b * mNewTranslationXs[i]); 1720 cl.setFastTranslationY( 1721 a * mOldTranslationYs[i] + b * mNewTranslationYs[i]); 1722 cl.setFastScaleX(a * mOldScaleXs[i] + b * mNewScaleXs[i]); 1723 cl.setFastScaleY(a * mOldScaleYs[i] + b * mNewScaleYs[i]); 1724 cl.setFastBackgroundAlpha( 1725 a * mOldBackgroundAlphas[i] + b * mNewBackgroundAlphas[i]); 1726 cl.setBackgroundAlphaMultiplier(a * mOldBackgroundAlphaMultipliers[i] + 1727 b * mNewBackgroundAlphaMultipliers[i]); 1728 cl.setFastAlpha(a * mOldAlphas[i] + b * mNewAlphas[i]); 1729 } 1730 } 1731 syncChildrenLayersEnabledOnVisiblePages(); 1732 } 1733 }); 1734 1735 ValueAnimator rotationAnim = 1736 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1737 rotationAnim.setInterpolator(new DecelerateInterpolator(2.0f)); 1738 rotationAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1739 public void onAnimationUpdate(float a, float b) { 1740 if (b == 0f) { 1741 // an optimization, but not required 1742 return; 1743 } 1744 for (int i = 0; i < getChildCount(); i++) { 1745 if (mOldAlphas[i] != 0 || mNewAlphas[i] != 0 || 1746 mOldRotationYs[i] != 0 || mNewRotationYs[i] != 0) { 1747 final CellLayout cl = (CellLayout) getChildAt(i); 1748 cl.setFastRotationY(a * mOldRotationYs[i] + b * mNewRotationYs[i]); 1749 } 1750 } 1751 } 1752 }); 1753 1754 anim.playTogether(animWithInterpolator, rotationAnim); 1755 anim.setStartDelay(delay); 1756 // If we call this when we're not animated, onAnimationEnd is never called on 1757 // the listener; make sure we only use the listener when we're actually animating 1758 anim.addListener(mChangeStateAnimationListener); 1759 } 1760 1761 if (stateIsSpringLoaded) { 1762 // Right now we're covered by Apps Customize 1763 // Show the background gradient immediately, so the gradient will 1764 // be showing once AppsCustomize disappears 1765 animateBackgroundGradient(getResources().getInteger( 1766 R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, false); 1767 } else { 1768 // Fade the background gradient away 1769 animateBackgroundGradient(0f, true); 1770 } 1771 syncChildrenLayersEnabledOnVisiblePages(); 1772 return anim; 1773 } 1774 1775 /** 1776 * Draw the View v into the given Canvas. 1777 * 1778 * @param v the view to draw 1779 * @param destCanvas the canvas to draw on 1780 * @param padding the horizontal and vertical padding to use when drawing 1781 */ 1782 private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { 1783 final Rect clipRect = mTempRect; 1784 v.getDrawingRect(clipRect); 1785 1786 boolean textVisible = false; 1787 1788 destCanvas.save(); 1789 if (v instanceof TextView && pruneToDrawable) { 1790 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1791 clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); 1792 destCanvas.translate(padding / 2, padding / 2); 1793 d.draw(destCanvas); 1794 } else { 1795 if (v instanceof FolderIcon) { 1796 // For FolderIcons the text can bleed into the icon area, and so we need to 1797 // hide the text completely (which can't be achieved by clipping). 1798 if (((FolderIcon) v).getTextVisible()) { 1799 ((FolderIcon) v).setTextVisible(false); 1800 textVisible = true; 1801 } 1802 } else if (v instanceof BubbleTextView) { 1803 final BubbleTextView tv = (BubbleTextView) v; 1804 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1805 tv.getLayout().getLineTop(0); 1806 } else if (v instanceof TextView) { 1807 final TextView tv = (TextView) v; 1808 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1809 tv.getLayout().getLineTop(0); 1810 } 1811 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1812 destCanvas.clipRect(clipRect, Op.REPLACE); 1813 v.draw(destCanvas); 1814 1815 // Restore text visibility of FolderIcon if necessary 1816 if (textVisible) { 1817 ((FolderIcon) v).setTextVisible(true); 1818 } 1819 } 1820 destCanvas.restore(); 1821 } 1822 1823 /** 1824 * Returns a new bitmap to show when the given View is being dragged around. 1825 * Responsibility for the bitmap is transferred to the caller. 1826 */ 1827 public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1828 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1829 Bitmap b; 1830 1831 if (v instanceof TextView) { 1832 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1833 b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, 1834 d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); 1835 } else { 1836 b = Bitmap.createBitmap( 1837 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1838 } 1839 1840 canvas.setBitmap(b); 1841 drawDragView(v, canvas, padding, true); 1842 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 1843 canvas.drawColor(mDragViewMultiplyColor, PorterDuff.Mode.MULTIPLY); 1844 canvas.setBitmap(null); 1845 1846 return b; 1847 } 1848 1849 /** 1850 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1851 * Responsibility for the bitmap is transferred to the caller. 1852 */ 1853 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1854 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1855 final Bitmap b = Bitmap.createBitmap( 1856 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1857 1858 canvas.setBitmap(b); 1859 drawDragView(v, canvas, padding, true); 1860 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1861 canvas.setBitmap(null); 1862 return b; 1863 } 1864 1865 /** 1866 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1867 * Responsibility for the bitmap is transferred to the caller. 1868 */ 1869 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h, 1870 Paint alphaClipPaint) { 1871 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1872 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1873 canvas.setBitmap(b); 1874 1875 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 1876 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 1877 (h - padding) / (float) orig.getHeight()); 1878 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 1879 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 1880 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 1881 1882 // center the image 1883 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 1884 1885 canvas.drawBitmap(orig, src, dst, null); 1886 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor, 1887 alphaClipPaint); 1888 canvas.setBitmap(null); 1889 1890 return b; 1891 } 1892 1893 /** 1894 * Creates a drag outline to represent a drop (that we don't have the actual information for 1895 * yet). May be changed in the future to alter the drop outline slightly depending on the 1896 * clip description mime data. 1897 */ 1898 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 1899 Resources r = getResources(); 1900 final int outlineColor = r.getColor(android.R.color.holo_blue_light); 1901 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 1902 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 1903 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 1904 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 1905 final Bitmap b = Bitmap.createBitmap( 1906 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 1907 1908 canvas.setBitmap(b); 1909 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 1910 rectRadius, rectRadius, mExternalDragOutlinePaint); 1911 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1912 canvas.setBitmap(null); 1913 return b; 1914 } 1915 1916 void startDrag(CellLayout.CellInfo cellInfo) { 1917 View child = cellInfo.cell; 1918 1919 // Make sure the drag was started by a long press as opposed to a long click. 1920 if (!child.isInTouchMode()) { 1921 return; 1922 } 1923 1924 mDragInfo = cellInfo; 1925 child.setVisibility(GONE); 1926 1927 child.clearFocus(); 1928 child.setPressed(false); 1929 1930 final Canvas canvas = new Canvas(); 1931 1932 // We need to add extra padding to the bitmap to make room for the glow effect 1933 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1934 1935 // The outline is used to visualize where the item will land if dropped 1936 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 1937 beginDragShared(child, this); 1938 } 1939 1940 public void beginDragShared(View child, DragSource source) { 1941 Resources r = getResources(); 1942 1943 // We need to add extra padding to the bitmap to make room for the glow effect 1944 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1945 1946 // The drag bitmap follows the touch point around on the screen 1947 final Bitmap b = createDragBitmap(child, new Canvas(), bitmapPadding); 1948 1949 final int bmpWidth = b.getWidth(); 1950 1951 mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 1952 final int dragLayerX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 1953 int dragLayerY = mTempXY[1] - bitmapPadding / 2; 1954 1955 Point dragVisualizeOffset = null; 1956 Rect dragRect = null; 1957 if (child instanceof BubbleTextView || child instanceof PagedViewIcon) { 1958 int iconSize = r.getDimensionPixelSize(R.dimen.app_icon_size); 1959 int iconPaddingTop = r.getDimensionPixelSize(R.dimen.app_icon_padding_top); 1960 int top = child.getPaddingTop(); 1961 int left = (bmpWidth - iconSize) / 2; 1962 int right = left + iconSize; 1963 int bottom = top + iconSize; 1964 dragLayerY += top; 1965 // Note: The drag region is used to calculate drag layer offsets, but the 1966 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 1967 dragVisualizeOffset = new Point(-bitmapPadding / 2, iconPaddingTop - bitmapPadding / 2); 1968 dragRect = new Rect(left, top, right, bottom); 1969 } else if (child instanceof FolderIcon) { 1970 int previewSize = r.getDimensionPixelSize(R.dimen.folder_preview_size); 1971 dragRect = new Rect(0, 0, child.getWidth(), previewSize); 1972 } 1973 1974 // Clear the pressed state if necessary 1975 if (child instanceof BubbleTextView) { 1976 BubbleTextView icon = (BubbleTextView) child; 1977 icon.clearPressedOrFocusedBackground(); 1978 } 1979 1980 mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 1981 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect); 1982 b.recycle(); 1983 } 1984 1985 void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, int screen, 1986 int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { 1987 View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); 1988 1989 final int[] cellXY = new int[2]; 1990 target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1991 addInScreen(view, container, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1992 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, cellXY[0], 1993 cellXY[1]); 1994 } 1995 1996 public boolean transitionStateShouldAllowDrop() { 1997 return (!isSwitchingState() || mTransitionProgress > 0.5f); 1998 } 1999 2000 /** 2001 * {@inheritDoc} 2002 */ 2003 public boolean acceptDrop(DragObject d) { 2004 // If it's an external drop (e.g. from All Apps), check if it should be accepted 2005 if (d.dragSource != this) { 2006 // Don't accept the drop if we're not over a screen at time of drop 2007 if (mDragTargetLayout == null) { 2008 return false; 2009 } 2010 if (!transitionStateShouldAllowDrop()) return false; 2011 2012 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2013 d.dragView, mDragViewVisualCenter); 2014 2015 // We want the point to be mapped to the dragTarget. 2016 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2017 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2018 } else { 2019 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2020 } 2021 2022 int spanX = 1; 2023 int spanY = 1; 2024 View ignoreView = null; 2025 if (mDragInfo != null) { 2026 final CellLayout.CellInfo dragCellInfo = mDragInfo; 2027 spanX = dragCellInfo.spanX; 2028 spanY = dragCellInfo.spanY; 2029 ignoreView = dragCellInfo.cell; 2030 } else { 2031 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 2032 spanX = dragInfo.spanX; 2033 spanY = dragInfo.spanY; 2034 } 2035 2036 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2037 (int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell); 2038 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, true)) { 2039 return true; 2040 } 2041 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, 2042 mTargetCell)) { 2043 return true; 2044 } 2045 2046 // Don't accept the drop if there's no room for the item 2047 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 2048 // Don't show the message if we are dropping on the AllApps button and the hotseat 2049 // is full 2050 if (mTargetCell != null && mLauncher.isHotseatLayout(mDragTargetLayout)) { 2051 Hotseat hotseat = mLauncher.getHotseat(); 2052 if (Hotseat.isAllAppsButtonRank( 2053 hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { 2054 return false; 2055 } 2056 } 2057 2058 mLauncher.showOutOfSpaceMessage(); 2059 return false; 2060 } 2061 } 2062 return true; 2063 } 2064 2065 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, 2066 boolean considerTimeout) { 2067 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2068 2069 boolean hasntMoved = false; 2070 if (mDragInfo != null) { 2071 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2072 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2073 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2074 } 2075 2076 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2077 return false; 2078 } 2079 2080 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2081 boolean willBecomeShortcut = 2082 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2083 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2084 2085 return (aboveShortcut && willBecomeShortcut); 2086 } 2087 2088 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell) { 2089 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2090 if (dropOverView instanceof FolderIcon) { 2091 FolderIcon fi = (FolderIcon) dropOverView; 2092 if (fi.acceptDrop(dragInfo)) { 2093 return true; 2094 } 2095 } 2096 return false; 2097 } 2098 2099 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2100 int[] targetCell, boolean external, DragView dragView, Runnable postAnimationRunnable) { 2101 View v = target.getChildAt(targetCell[0], targetCell[1]); 2102 boolean hasntMoved = false; 2103 if (mDragInfo != null) { 2104 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2105 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2106 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2107 } 2108 2109 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2110 mCreateUserFolderOnDrop = false; 2111 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 2112 2113 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2114 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2115 2116 if (aboveShortcut && willBecomeShortcut) { 2117 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2118 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2119 // if the drag started here, we need to remove it from the workspace 2120 if (!external) { 2121 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2122 } 2123 2124 Rect folderLocation = new Rect(); 2125 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2126 target.removeView(v); 2127 2128 FolderIcon fi = 2129 mLauncher.addFolder(target, container, screen, targetCell[0], targetCell[1]); 2130 destInfo.cellX = -1; 2131 destInfo.cellY = -1; 2132 sourceInfo.cellX = -1; 2133 sourceInfo.cellY = -1; 2134 2135 // If the dragView is null, we can't animate 2136 boolean animate = dragView != null; 2137 if (animate) { 2138 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2139 postAnimationRunnable); 2140 } else { 2141 fi.addItem(destInfo); 2142 fi.addItem(sourceInfo); 2143 } 2144 return true; 2145 } 2146 return false; 2147 } 2148 2149 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2150 DragObject d, boolean external) { 2151 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2152 if (dropOverView instanceof FolderIcon) { 2153 FolderIcon fi = (FolderIcon) dropOverView; 2154 if (fi.acceptDrop(d.dragInfo)) { 2155 fi.onDrop(d); 2156 2157 // if the drag started here, we need to remove it from the workspace 2158 if (!external) { 2159 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2160 } 2161 return true; 2162 } 2163 } 2164 return false; 2165 } 2166 2167 public void onDrop(DragObject d) { 2168 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2169 mDragViewVisualCenter); 2170 2171 // We want the point to be mapped to the dragTarget. 2172 if (mDragTargetLayout != null) { 2173 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2174 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2175 } else { 2176 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2177 } 2178 } 2179 2180 CellLayout dropTargetLayout = mDragTargetLayout; 2181 2182 int snapScreen = -1; 2183 if (d.dragSource != this) { 2184 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2185 (int) mDragViewVisualCenter[1] }; 2186 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2187 } else if (mDragInfo != null) { 2188 final View cell = mDragInfo.cell; 2189 2190 if (dropTargetLayout != null) { 2191 // Move internally 2192 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2193 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2194 long container = hasMovedIntoHotseat ? 2195 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2196 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2197 int screen = (mTargetCell[0] < 0) ? 2198 mDragInfo.screen : indexOfChild(dropTargetLayout); 2199 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2200 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2201 // First we find the cell nearest to point at which the item is 2202 // dropped, without any consideration to whether there is an item there. 2203 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2204 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2205 // If the item being dropped is a shortcut and the nearest drop 2206 // cell also contains a shortcut, then create a folder with the two shortcuts. 2207 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2208 dropTargetLayout, mTargetCell, false, d.dragView, null)) { 2209 return; 2210 } 2211 2212 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, d, false)) { 2213 return; 2214 } 2215 2216 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2217 // we need to find the nearest cell location that is vacant 2218 mTargetCell = findNearestVacantArea((int) mDragViewVisualCenter[0], 2219 (int) mDragViewVisualCenter[1], mDragInfo.spanX, mDragInfo.spanY, cell, 2220 dropTargetLayout, mTargetCell); 2221 2222 if (mCurrentPage != screen && !hasMovedIntoHotseat) { 2223 snapScreen = screen; 2224 snapToPage(screen); 2225 } 2226 2227 if (mTargetCell[0] >= 0 && mTargetCell[1] >= 0) { 2228 if (hasMovedLayouts) { 2229 // Reparent the view 2230 getParentCellLayoutForView(cell).removeView(cell); 2231 addInScreen(cell, container, screen, mTargetCell[0], mTargetCell[1], 2232 mDragInfo.spanX, mDragInfo.spanY); 2233 } 2234 2235 // update the item's position after drop 2236 final ItemInfo info = (ItemInfo) cell.getTag(); 2237 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2238 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 2239 lp.cellX = mTargetCell[0]; 2240 lp.cellY = mTargetCell[1]; 2241 cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screen, 2242 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2243 2244 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2245 cell instanceof LauncherAppWidgetHostView) { 2246 final CellLayout cellLayout = dropTargetLayout; 2247 // We post this call so that the widget has a chance to be placed 2248 // in its final location 2249 2250 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2251 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2252 if (pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2253 final Runnable resizeRunnable = new Runnable() { 2254 public void run() { 2255 DragLayer dragLayer = mLauncher.getDragLayer(); 2256 dragLayer.addResizeFrame(info, hostView, cellLayout); 2257 } 2258 }; 2259 post(new Runnable() { 2260 public void run() { 2261 if (!isPageMoving()) { 2262 resizeRunnable.run(); 2263 } else { 2264 mDelayedResizeRunnable = resizeRunnable; 2265 } 2266 } 2267 }); 2268 } 2269 } 2270 2271 LauncherModel.moveItemInDatabase(mLauncher, info, container, screen, lp.cellX, 2272 lp.cellY); 2273 } 2274 } 2275 2276 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2277 2278 // Prepare it to be animated into its new position 2279 // This must be called after the view has been re-parented 2280 final Runnable disableHardwareLayersRunnable = new Runnable() { 2281 @Override 2282 public void run() { 2283 mAnimatingViewIntoPlace = false; 2284 updateChildrenLayersEnabled(); 2285 } 2286 }; 2287 mAnimatingViewIntoPlace = true; 2288 if (d.dragView.hasDrawn()) { 2289 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2290 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2291 disableHardwareLayersRunnable, this); 2292 } else { 2293 cell.setVisibility(VISIBLE); 2294 } 2295 parent.onDropChild(cell); 2296 } 2297 } 2298 2299 public void setFinalScrollForPageChange(int screen) { 2300 if (screen >= 0) { 2301 mSavedScrollX = getScrollX(); 2302 CellLayout cl = (CellLayout) getChildAt(screen); 2303 mSavedTranslationX = cl.getTranslationX(); 2304 mSavedRotationY = cl.getRotationY(); 2305 final int newX = getChildOffset(screen) - getRelativeChildOffset(screen); 2306 setScrollX(newX); 2307 cl.setTranslationX(0f); 2308 cl.setRotationY(0f); 2309 } 2310 } 2311 2312 public void resetFinalScrollForPageChange(int screen) { 2313 if (screen >= 0) { 2314 CellLayout cl = (CellLayout) getChildAt(screen); 2315 setScrollX(mSavedScrollX); 2316 cl.setTranslationX(mSavedTranslationX); 2317 cl.setRotationY(mSavedRotationY); 2318 } 2319 } 2320 2321 public void getViewLocationRelativeToSelf(View v, int[] location) { 2322 getLocationInWindow(location); 2323 int x = location[0]; 2324 int y = location[1]; 2325 2326 v.getLocationInWindow(location); 2327 int vX = location[0]; 2328 int vY = location[1]; 2329 2330 location[0] = vX - x; 2331 location[1] = vY - y; 2332 } 2333 2334 public void onDragEnter(DragObject d) { 2335 mDragHasEnteredWorkspace = true; 2336 if (mDragTargetLayout != null) { 2337 mDragTargetLayout.setIsDragOverlapping(false); 2338 mDragTargetLayout.onDragExit(); 2339 } 2340 mDragTargetLayout = getCurrentDropLayout(); 2341 mDragTargetLayout.setIsDragOverlapping(true); 2342 mDragTargetLayout.onDragEnter(); 2343 2344 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2345 // don't need to show the outlines 2346 if (LauncherApplication.isScreenLarge()) { 2347 showOutlines(); 2348 } 2349 } 2350 2351 private void doDragExit(DragObject d) { 2352 // Clean up folders 2353 cleanupFolderCreation(d); 2354 2355 // Reset the scroll area and previous drag target 2356 onResetScrollArea(); 2357 2358 if (mDragTargetLayout != null) { 2359 mDragTargetLayout.setIsDragOverlapping(false); 2360 mDragTargetLayout.onDragExit(); 2361 } 2362 mLastDragOverView = null; 2363 mSpringLoadedDragController.cancel(); 2364 2365 if (!mIsPageMoving) { 2366 hideOutlines(); 2367 } 2368 } 2369 2370 public void onDragExit(DragObject d) { 2371 mDragHasEnteredWorkspace = false; 2372 doDragExit(d); 2373 } 2374 2375 public DropTarget getDropTargetDelegate(DragObject d) { 2376 return null; 2377 } 2378 2379 /** 2380 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 2381 * in the returned structure related to the widgets that match the drop (or a null list if it is 2382 * a shortcut drop). If the drop is not accepted then a null structure is returned. 2383 */ 2384 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 2385 final LauncherModel model = mLauncher.getModel(); 2386 final ClipDescription desc = event.getClipDescription(); 2387 final int mimeTypeCount = desc.getMimeTypeCount(); 2388 for (int i = 0; i < mimeTypeCount; ++i) { 2389 final String mimeType = desc.getMimeType(i); 2390 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 2391 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 2392 } else { 2393 final List<WidgetMimeTypeHandlerData> widgets = 2394 model.resolveWidgetsForMimeType(mContext, mimeType); 2395 if (widgets.size() > 0) { 2396 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 2397 } 2398 } 2399 } 2400 return null; 2401 } 2402 2403 /** 2404 * Global drag and drop handler 2405 */ 2406 @Override 2407 public boolean onDragEvent(DragEvent event) { 2408 final ClipDescription desc = event.getClipDescription(); 2409 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 2410 final int[] pos = new int[2]; 2411 layout.getLocationOnScreen(pos); 2412 // We need to offset the drag coordinates to layout coordinate space 2413 final int x = (int) event.getX() - pos[0]; 2414 final int y = (int) event.getY() - pos[1]; 2415 2416 switch (event.getAction()) { 2417 case DragEvent.ACTION_DRAG_STARTED: { 2418 // Validate this drag 2419 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2420 if (test != null) { 2421 boolean isShortcut = (test.second == null); 2422 if (isShortcut) { 2423 // Check if we have enough space on this screen to add a new shortcut 2424 if (!layout.findCellForSpan(pos, 1, 1)) { 2425 mLauncher.showOutOfSpaceMessage(); 2426 return false; 2427 } 2428 } 2429 } else { 2430 // Show error message if we couldn't accept any of the items 2431 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 2432 Toast.LENGTH_SHORT).show(); 2433 return false; 2434 } 2435 2436 // Create the drag outline 2437 // We need to add extra padding to the bitmap to make room for the glow effect 2438 final Canvas canvas = new Canvas(); 2439 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2440 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 2441 2442 // Show the current page outlines to indicate that we can accept this drop 2443 showOutlines(); 2444 layout.onDragEnter(); 2445 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1, null, null); 2446 2447 return true; 2448 } 2449 case DragEvent.ACTION_DRAG_LOCATION: 2450 // Visualize the drop location 2451 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1, null, null); 2452 return true; 2453 case DragEvent.ACTION_DROP: { 2454 // Try and add any shortcuts 2455 final LauncherModel model = mLauncher.getModel(); 2456 final ClipData data = event.getClipData(); 2457 2458 // We assume that the mime types are ordered in descending importance of 2459 // representation. So we enumerate the list of mime types and alert the 2460 // user if any widgets can handle the drop. Only the most preferred 2461 // representation will be handled. 2462 pos[0] = x; 2463 pos[1] = y; 2464 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2465 if (test != null) { 2466 final int index = test.first; 2467 final List<WidgetMimeTypeHandlerData> widgets = test.second; 2468 final boolean isShortcut = (widgets == null); 2469 final String mimeType = desc.getMimeType(index); 2470 if (isShortcut) { 2471 final Intent intent = data.getItemAt(index).getIntent(); 2472 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 2473 if (info != null) { 2474 onDropExternal(new int[] { x, y }, info, layout, false); 2475 } 2476 } else { 2477 if (widgets.size() == 1) { 2478 // If there is only one item, then go ahead and add and configure 2479 // that widget 2480 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 2481 final PendingAddWidgetInfo createInfo = 2482 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 2483 mLauncher.addAppWidgetFromDrop(createInfo, 2484 LauncherSettings.Favorites.CONTAINER_DESKTOP, mCurrentPage, null, pos); 2485 } else { 2486 // Show the widget picker dialog if there is more than one widget 2487 // that can handle this data type 2488 final InstallWidgetReceiver.WidgetListAdapter adapter = 2489 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 2490 data, widgets, layout, mCurrentPage, pos); 2491 final AlertDialog.Builder builder = 2492 new AlertDialog.Builder(mContext); 2493 builder.setAdapter(adapter, adapter); 2494 builder.setCancelable(true); 2495 builder.setTitle(mContext.getString( 2496 R.string.external_drop_widget_pick_title)); 2497 builder.setIcon(R.drawable.ic_no_applications); 2498 builder.show(); 2499 } 2500 } 2501 } 2502 return true; 2503 } 2504 case DragEvent.ACTION_DRAG_ENDED: 2505 // Hide the page outlines after the drop 2506 layout.onDragExit(); 2507 hideOutlines(); 2508 return true; 2509 } 2510 return super.onDragEvent(event); 2511 } 2512 2513 /* 2514 * 2515 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2516 * coordinate space. The argument xy is modified with the return result. 2517 * 2518 */ 2519 void mapPointFromSelfToChild(View v, float[] xy) { 2520 mapPointFromSelfToChild(v, xy, null); 2521 } 2522 2523 /* 2524 * 2525 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2526 * coordinate space. The argument xy is modified with the return result. 2527 * 2528 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2529 * computing it itself; we use this to avoid redundant matrix inversions in 2530 * findMatchingPageForDragOver 2531 * 2532 */ 2533 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2534 if (cachedInverseMatrix == null) { 2535 v.getMatrix().invert(mTempInverseMatrix); 2536 cachedInverseMatrix = mTempInverseMatrix; 2537 } 2538 xy[0] = xy[0] + mScrollX - v.getLeft(); 2539 xy[1] = xy[1] + mScrollY - v.getTop(); 2540 cachedInverseMatrix.mapPoints(xy); 2541 } 2542 2543 /* 2544 * Maps a point from the Workspace's coordinate system to another sibling view's. (Workspace 2545 * covers the full screen) 2546 */ 2547 void mapPointFromSelfToSibling(View v, float[] xy) { 2548 xy[0] = xy[0] - v.getLeft(); 2549 xy[1] = xy[1] - v.getTop(); 2550 } 2551 2552 /* 2553 * 2554 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2555 * the parent View's coordinate space. The argument xy is modified with the return result. 2556 * 2557 */ 2558 void mapPointFromChildToSelf(View v, float[] xy) { 2559 v.getMatrix().mapPoints(xy); 2560 xy[0] -= (mScrollX - v.getLeft()); 2561 xy[1] -= (mScrollY - v.getTop()); 2562 } 2563 2564 static private float squaredDistance(float[] point1, float[] point2) { 2565 float distanceX = point1[0] - point2[0]; 2566 float distanceY = point2[1] - point2[1]; 2567 return distanceX * distanceX + distanceY * distanceY; 2568 } 2569 2570 /* 2571 * 2572 * Returns true if the passed CellLayout cl overlaps with dragView 2573 * 2574 */ 2575 boolean overlaps(CellLayout cl, DragView dragView, 2576 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2577 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2578 final float[] draggedItemTopLeft = mTempDragCoordinates; 2579 draggedItemTopLeft[0] = dragViewX; 2580 draggedItemTopLeft[1] = dragViewY; 2581 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2582 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2583 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2584 2585 // Transform the dragged item's top left coordinates 2586 // to the CellLayout's local coordinates 2587 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2588 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2589 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2590 2591 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2592 // Transform the dragged item's bottom right coordinates 2593 // to the CellLayout's local coordinates 2594 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2595 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2596 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2597 2598 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2599 float overlap = (overlapRegionRight - overlapRegionLeft) * 2600 (overlapRegionBottom - overlapRegionTop); 2601 if (overlap > 0) { 2602 return true; 2603 } 2604 } 2605 } 2606 return false; 2607 } 2608 2609 /* 2610 * 2611 * This method returns the CellLayout that is currently being dragged to. In order to drag 2612 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2613 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2614 * 2615 * Return null if no CellLayout is currently being dragged over 2616 * 2617 */ 2618 private CellLayout findMatchingPageForDragOver( 2619 DragView dragView, float originX, float originY, boolean exact) { 2620 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2621 // with the item being dragged and then choose the one that's closest to the touch point 2622 final int screenCount = getChildCount(); 2623 CellLayout bestMatchingScreen = null; 2624 float smallestDistSoFar = Float.MAX_VALUE; 2625 2626 for (int i = 0; i < screenCount; i++) { 2627 CellLayout cl = (CellLayout) getChildAt(i); 2628 2629 final float[] touchXy = {originX, originY}; 2630 // Transform the touch coordinates to the CellLayout's local coordinates 2631 // If the touch point is within the bounds of the cell layout, we can return immediately 2632 cl.getMatrix().invert(mTempInverseMatrix); 2633 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2634 2635 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2636 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2637 return cl; 2638 } 2639 2640 if (!exact) { 2641 // Get the center of the cell layout in screen coordinates 2642 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2643 cellLayoutCenter[0] = cl.getWidth()/2; 2644 cellLayoutCenter[1] = cl.getHeight()/2; 2645 mapPointFromChildToSelf(cl, cellLayoutCenter); 2646 2647 touchXy[0] = originX; 2648 touchXy[1] = originY; 2649 2650 // Calculate the distance between the center of the CellLayout 2651 // and the touch point 2652 float dist = squaredDistance(touchXy, cellLayoutCenter); 2653 2654 if (dist < smallestDistSoFar) { 2655 smallestDistSoFar = dist; 2656 bestMatchingScreen = cl; 2657 } 2658 } 2659 } 2660 return bestMatchingScreen; 2661 } 2662 2663 // This is used to compute the visual center of the dragView. This point is then 2664 // used to visualize drop locations and determine where to drop an item. The idea is that 2665 // the visual center represents the user's interpretation of where the item is, and hence 2666 // is the appropriate point to use when determining drop location. 2667 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2668 DragView dragView, float[] recycle) { 2669 float res[]; 2670 if (recycle == null) { 2671 res = new float[2]; 2672 } else { 2673 res = recycle; 2674 } 2675 2676 // First off, the drag view has been shifted in a way that is not represented in the 2677 // x and y values or the x/yOffsets. Here we account for that shift. 2678 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2679 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2680 2681 // These represent the visual top and left of drag view if a dragRect was provided. 2682 // If a dragRect was not provided, then they correspond to the actual view left and 2683 // top, as the dragRect is in that case taken to be the entire dragView. 2684 // R.dimen.dragViewOffsetY. 2685 int left = x - xOffset; 2686 int top = y - yOffset; 2687 2688 // In order to find the visual center, we shift by half the dragRect 2689 res[0] = left + dragView.getDragRegion().width() / 2; 2690 res[1] = top + dragView.getDragRegion().height() / 2; 2691 2692 return res; 2693 } 2694 2695 private boolean isDragWidget(DragObject d) { 2696 return (d.dragInfo instanceof LauncherAppWidgetInfo || 2697 d.dragInfo instanceof PendingAddWidgetInfo); 2698 } 2699 private boolean isExternalDragWidget(DragObject d) { 2700 return d.dragSource != this && isDragWidget(d); 2701 } 2702 2703 public void onDragOver(DragObject d) { 2704 // Skip drag over events while we are dragging over side pages 2705 if (mInScrollArea) return; 2706 if (mIsSwitchingState) return; 2707 2708 Rect r = new Rect(); 2709 CellLayout layout = null; 2710 ItemInfo item = (ItemInfo) d.dragInfo; 2711 2712 // Ensure that we have proper spans for the item that we are dropping 2713 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2714 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2715 d.dragView, mDragViewVisualCenter); 2716 2717 // Identify whether we have dragged over a side page 2718 if (isSmall()) { 2719 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 2720 mLauncher.getHotseat().getHitRect(r); 2721 if (r.contains(d.x, d.y)) { 2722 layout = mLauncher.getHotseat().getLayout(); 2723 } 2724 } 2725 if (layout == null) { 2726 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false); 2727 } 2728 if (layout != mDragTargetLayout) { 2729 // Cancel all intermediate folder states 2730 cleanupFolderCreation(d); 2731 2732 if (mDragTargetLayout != null) { 2733 mDragTargetLayout.setIsDragOverlapping(false); 2734 mDragTargetLayout.onDragExit(); 2735 } 2736 mDragTargetLayout = layout; 2737 if (mDragTargetLayout != null) { 2738 mDragTargetLayout.setIsDragOverlapping(true); 2739 mDragTargetLayout.onDragEnter(); 2740 } else { 2741 mLastDragOverView = null; 2742 } 2743 2744 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 2745 if (isInSpringLoadedMode) { 2746 if (mLauncher.isHotseatLayout(layout)) { 2747 mSpringLoadedDragController.cancel(); 2748 } else { 2749 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2750 } 2751 } 2752 } 2753 } else { 2754 // Test to see if we are over the hotseat otherwise just use the current page 2755 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 2756 mLauncher.getHotseat().getHitRect(r); 2757 if (r.contains(d.x, d.y)) { 2758 layout = mLauncher.getHotseat().getLayout(); 2759 } 2760 } 2761 if (layout == null) { 2762 layout = getCurrentDropLayout(); 2763 } 2764 if (layout != mDragTargetLayout) { 2765 if (mDragTargetLayout != null) { 2766 mDragTargetLayout.setIsDragOverlapping(false); 2767 mDragTargetLayout.onDragExit(); 2768 } 2769 mDragTargetLayout = layout; 2770 mDragTargetLayout.setIsDragOverlapping(true); 2771 mDragTargetLayout.onDragEnter(); 2772 } 2773 } 2774 2775 // Handle the drag over 2776 if (mDragTargetLayout != null) { 2777 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2778 2779 // We want the point to be mapped to the dragTarget. 2780 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2781 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2782 } else { 2783 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2784 } 2785 ItemInfo info = (ItemInfo) d.dragInfo; 2786 2787 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2788 (int) mDragViewVisualCenter[1], 1, 1, mDragTargetLayout, mTargetCell); 2789 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2790 mTargetCell[1]); 2791 2792 boolean userFolderPending = willCreateUserFolder(info, mDragTargetLayout, 2793 mTargetCell, false); 2794 boolean isOverFolder = dragOverView instanceof FolderIcon; 2795 if (dragOverView != mLastDragOverView) { 2796 cancelFolderCreation(); 2797 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2798 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2799 } 2800 } 2801 2802 if (userFolderPending && dragOverView != mLastDragOverView) { 2803 mFolderCreationAlarm.setOnAlarmListener(new 2804 FolderCreationAlarmListener(mDragTargetLayout, mTargetCell[0], mTargetCell[1])); 2805 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2806 } 2807 2808 if (dragOverView != mLastDragOverView && isOverFolder) { 2809 ((FolderIcon) dragOverView).onDragEnter(d.dragInfo); 2810 if (mDragTargetLayout != null) { 2811 mDragTargetLayout.clearDragOutlines(); 2812 } 2813 } 2814 mLastDragOverView = dragOverView; 2815 2816 if (!mCreateUserFolderOnDrop && !isOverFolder) { 2817 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2818 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2819 item.spanX, item.spanY, d.dragView.getDragVisualizeOffset(), 2820 d.dragView.getDragRegion()); 2821 } 2822 } 2823 } 2824 2825 private void cleanupFolderCreation(DragObject d) { 2826 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2827 mDragFolderRingAnimator.animateToNaturalState(); 2828 } 2829 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2830 if (d != null) { 2831 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2832 } 2833 } 2834 mFolderCreationAlarm.cancelAlarm(); 2835 } 2836 2837 private void cancelFolderCreation() { 2838 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2839 mDragFolderRingAnimator.animateToNaturalState(); 2840 } 2841 mCreateUserFolderOnDrop = false; 2842 mFolderCreationAlarm.cancelAlarm(); 2843 } 2844 2845 class FolderCreationAlarmListener implements OnAlarmListener { 2846 CellLayout layout; 2847 int cellX; 2848 int cellY; 2849 2850 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 2851 this.layout = layout; 2852 this.cellX = cellX; 2853 this.cellY = cellY; 2854 } 2855 2856 public void onAlarm(Alarm alarm) { 2857 if (mDragFolderRingAnimator == null) { 2858 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 2859 } 2860 mDragFolderRingAnimator.setCell(cellX, cellY); 2861 mDragFolderRingAnimator.setCellLayout(layout); 2862 mDragFolderRingAnimator.animateToAcceptState(); 2863 layout.showFolderAccept(mDragFolderRingAnimator); 2864 layout.clearDragOutlines(); 2865 mCreateUserFolderOnDrop = true; 2866 } 2867 } 2868 2869 @Override 2870 public void getHitRect(Rect outRect) { 2871 // We want the workspace to have the whole area of the display (it will find the correct 2872 // cell layout to drop to in the existing drag/drop logic. 2873 outRect.set(0, 0, mDisplayWidth, mDisplayHeight); 2874 } 2875 2876 /** 2877 * Add the item specified by dragInfo to the given layout. 2878 * @return true if successful 2879 */ 2880 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2881 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2882 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2883 return true; 2884 } 2885 mLauncher.showOutOfSpaceMessage(); 2886 return false; 2887 } 2888 2889 private void onDropExternal(int[] touchXY, Object dragInfo, 2890 CellLayout cellLayout, boolean insertAtFirst) { 2891 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 2892 } 2893 2894 /** 2895 * Drop an item that didn't originate on one of the workspace screens. 2896 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2897 * come from another app altogether. 2898 * 2899 * NOTE: This can also be called when we are outside of a drag event, when we want 2900 * to add an item to one of the workspace screens. 2901 */ 2902 private void onDropExternal(final int[] touchXY, final Object dragInfo, 2903 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 2904 final Runnable exitSpringLoadedRunnable = new Runnable() { 2905 @Override 2906 public void run() { 2907 mLauncher.exitSpringLoadedDragModeDelayed(true, false); 2908 } 2909 }; 2910 2911 ItemInfo info = (ItemInfo) dragInfo; 2912 int spanX = info.spanX; 2913 int spanY = info.spanY; 2914 if (mDragInfo != null) { 2915 spanX = mDragInfo.spanX; 2916 spanY = mDragInfo.spanY; 2917 } 2918 2919 final long container = mLauncher.isHotseatLayout(cellLayout) ? 2920 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2921 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2922 final int screen = indexOfChild(cellLayout); 2923 if (!mLauncher.isHotseatLayout(cellLayout) && screen != mCurrentPage 2924 && mState != State.SPRING_LOADED) { 2925 snapToPage(screen); 2926 } 2927 2928 if (info instanceof PendingAddItemInfo) { 2929 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 2930 2931 boolean findNearestVacantCell = true; 2932 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 2933 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 2934 cellLayout, mTargetCell); 2935 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, 2936 true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 2937 mDragTargetLayout, mTargetCell)) { 2938 findNearestVacantCell = false; 2939 } 2940 } 2941 if (findNearestVacantCell) { 2942 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], spanX, spanY, null, 2943 cellLayout, mTargetCell); 2944 } 2945 2946 Runnable onAnimationCompleteRunnable = new Runnable() { 2947 @Override 2948 public void run() { 2949 // When dragging and dropping from customization tray, we deal with creating 2950 // widgets/shortcuts/folders in a slightly different way 2951 switch (pendingInfo.itemType) { 2952 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 2953 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, 2954 container, screen, mTargetCell, null); 2955 break; 2956 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2957 mLauncher.processShortcutFromDrop(pendingInfo.componentName, 2958 container, screen, mTargetCell, null); 2959 break; 2960 default: 2961 throw new IllegalStateException("Unknown item type: " + 2962 pendingInfo.itemType); 2963 } 2964 cellLayout.onDragExit(); 2965 } 2966 }; 2967 2968 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 2969 // location and size on the home screen. 2970 RectF r = estimateItemPosition(cellLayout, pendingInfo, 2971 mTargetCell[0], mTargetCell[1], spanX, spanY); 2972 int loc[] = new int[2]; 2973 loc[0] = (int) r.left; 2974 loc[1] = (int) r.top; 2975 setFinalTransitionTransform(cellLayout); 2976 float cellLayoutScale = 2977 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(cellLayout, loc); 2978 resetTransitionTransform(cellLayout); 2979 2980 float dragViewScale = Math.min(r.width() / d.dragView.getMeasuredWidth(), 2981 r.height() / d.dragView.getMeasuredHeight()); 2982 // The animation will scale the dragView about its center, so we need to center about 2983 // the final location. 2984 loc[0] -= (d.dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 2985 loc[1] -= (d.dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 2986 2987 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, loc, 2988 dragViewScale * cellLayoutScale, onAnimationCompleteRunnable); 2989 } else { 2990 // This is for other drag/drop cases, like dragging from All Apps 2991 View view = null; 2992 2993 switch (info.itemType) { 2994 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 2995 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2996 if (info.container == NO_ID && info instanceof ApplicationInfo) { 2997 // Came from all apps -- make a copy 2998 info = new ShortcutInfo((ApplicationInfo) info); 2999 } 3000 view = mLauncher.createShortcut(R.layout.application, cellLayout, 3001 (ShortcutInfo) info); 3002 break; 3003 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 3004 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 3005 (FolderInfo) info, mIconCache); 3006 break; 3007 default: 3008 throw new IllegalStateException("Unknown item type: " + info.itemType); 3009 } 3010 3011 // First we find the cell nearest to point at which the item is 3012 // dropped, without any consideration to whether there is an item there. 3013 if (touchXY != null) { 3014 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3015 cellLayout, mTargetCell); 3016 d.postAnimationRunnable = exitSpringLoadedRunnable; 3017 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, true, 3018 d.dragView, d.postAnimationRunnable)) { 3019 return; 3020 } 3021 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, d, true)) { 3022 return; 3023 } 3024 } 3025 3026 if (touchXY != null) { 3027 // when dragging and dropping, just find the closest free spot 3028 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], 1, 1, null, 3029 cellLayout, mTargetCell); 3030 } else { 3031 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3032 } 3033 addInScreen(view, container, screen, mTargetCell[0], mTargetCell[1], info.spanX, 3034 info.spanY, insertAtFirst); 3035 cellLayout.onDropChild(view); 3036 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 3037 cellLayout.getChildrenLayout().measureChild(view); 3038 3039 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, 3040 lp.cellX, lp.cellY); 3041 3042 if (d.dragView != null) { 3043 // We wrap the animation call in the temporary set and reset of the current 3044 // cellLayout to its final transform -- this means we animate the drag view to 3045 // the correct final location. 3046 setFinalTransitionTransform(cellLayout); 3047 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 3048 exitSpringLoadedRunnable); 3049 resetTransitionTransform(cellLayout); 3050 } 3051 } 3052 } 3053 3054 public void setFinalTransitionTransform(CellLayout layout) { 3055 if (isSwitchingState()) { 3056 int index = indexOfChild(layout); 3057 mCurrentScaleX = layout.getScaleX(); 3058 mCurrentScaleY = layout.getScaleY(); 3059 mCurrentTranslationX = layout.getTranslationX(); 3060 mCurrentTranslationY = layout.getTranslationY(); 3061 mCurrentRotationY = layout.getRotationY(); 3062 layout.setScaleX(mNewScaleXs[index]); 3063 layout.setScaleY(mNewScaleYs[index]); 3064 layout.setTranslationX(mNewTranslationXs[index]); 3065 layout.setTranslationY(mNewTranslationYs[index]); 3066 layout.setRotationY(mNewRotationYs[index]); 3067 } 3068 } 3069 public void resetTransitionTransform(CellLayout layout) { 3070 if (isSwitchingState()) { 3071 mCurrentScaleX = layout.getScaleX(); 3072 mCurrentScaleY = layout.getScaleY(); 3073 mCurrentTranslationX = layout.getTranslationX(); 3074 mCurrentTranslationY = layout.getTranslationY(); 3075 mCurrentRotationY = layout.getRotationY(); 3076 layout.setScaleX(mCurrentScaleX); 3077 layout.setScaleY(mCurrentScaleY); 3078 layout.setTranslationX(mCurrentTranslationX); 3079 layout.setTranslationY(mCurrentTranslationY); 3080 layout.setRotationY(mCurrentRotationY); 3081 } 3082 } 3083 3084 /** 3085 * Return the current {@link CellLayout}, correctly picking the destination 3086 * screen while a scroll is in progress. 3087 */ 3088 public CellLayout getCurrentDropLayout() { 3089 return (CellLayout) getChildAt(mNextPage == INVALID_PAGE ? mCurrentPage : mNextPage); 3090 } 3091 3092 /** 3093 * Return the current CellInfo describing our current drag; this method exists 3094 * so that Launcher can sync this object with the correct info when the activity is created/ 3095 * destroyed 3096 * 3097 */ 3098 public CellLayout.CellInfo getDragInfo() { 3099 return mDragInfo; 3100 } 3101 3102 /** 3103 * Calculate the nearest cell where the given object would be dropped. 3104 * 3105 * pixelX and pixelY should be in the coordinate system of layout 3106 */ 3107 private int[] findNearestVacantArea(int pixelX, int pixelY, 3108 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 3109 return layout.findNearestVacantArea( 3110 pixelX, pixelY, spanX, spanY, ignoreView, recycle); 3111 } 3112 3113 /** 3114 * Calculate the nearest cell where the given object would be dropped. 3115 * 3116 * pixelX and pixelY should be in the coordinate system of layout 3117 */ 3118 private int[] findNearestArea(int pixelX, int pixelY, 3119 int spanX, int spanY, CellLayout layout, int[] recycle) { 3120 return layout.findNearestArea( 3121 pixelX, pixelY, spanX, spanY, recycle); 3122 } 3123 3124 void setup(DragController dragController) { 3125 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3126 mDragController = dragController; 3127 3128 // hardware layers on children are enabled on startup, but should be disabled until 3129 // needed 3130 updateChildrenLayersEnabled(); 3131 setWallpaperDimension(); 3132 } 3133 3134 /** 3135 * Called at the end of a drag which originated on the workspace. 3136 */ 3137 public void onDropCompleted(View target, DragObject d, boolean success) { 3138 if (success) { 3139 if (target != this) { 3140 if (mDragInfo != null) { 3141 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 3142 if (mDragInfo.cell instanceof DropTarget) { 3143 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 3144 } 3145 } 3146 } 3147 } else if (mDragInfo != null) { 3148 // NOTE: When 'success' is true, onDragExit is called by the DragController before 3149 // calling onDropCompleted(). We call it ourselves here, but maybe this should be 3150 // moved into DragController.cancelDrag(). 3151 doDragExit(null); 3152 CellLayout cellLayout; 3153 if (mLauncher.isHotseatLayout(target)) { 3154 cellLayout = mLauncher.getHotseat().getLayout(); 3155 } else { 3156 cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3157 } 3158 cellLayout.onDropChild(mDragInfo.cell); 3159 } 3160 if (d.cancelled && mDragInfo.cell != null) { 3161 mDragInfo.cell.setVisibility(VISIBLE); 3162 } 3163 mDragOutline = null; 3164 mDragInfo = null; 3165 } 3166 3167 public boolean isDropEnabled() { 3168 return true; 3169 } 3170 3171 @Override 3172 protected void onRestoreInstanceState(Parcelable state) { 3173 super.onRestoreInstanceState(state); 3174 Launcher.setScreen(mCurrentPage); 3175 } 3176 3177 @Override 3178 public void scrollLeft() { 3179 if (!isSmall() && !mIsSwitchingState) { 3180 super.scrollLeft(); 3181 } 3182 Folder openFolder = getOpenFolder(); 3183 if (openFolder != null) { 3184 openFolder.completeDragExit(); 3185 } 3186 } 3187 3188 @Override 3189 public void scrollRight() { 3190 if (!isSmall() && !mIsSwitchingState) { 3191 super.scrollRight(); 3192 } 3193 Folder openFolder = getOpenFolder(); 3194 if (openFolder != null) { 3195 openFolder.completeDragExit(); 3196 } 3197 } 3198 3199 @Override 3200 public boolean onEnterScrollArea(int x, int y, int direction) { 3201 // Ignore the scroll area if we are dragging over the hot seat 3202 if (mLauncher.getHotseat() != null) { 3203 Rect r = new Rect(); 3204 mLauncher.getHotseat().getHitRect(r); 3205 if (r.contains(x, y)) { 3206 return false; 3207 } 3208 } 3209 3210 boolean result = false; 3211 if (!isSmall() && !mIsSwitchingState) { 3212 mInScrollArea = true; 3213 3214 final int page = mCurrentPage + (direction == DragController.SCROLL_LEFT ? -1 : 1); 3215 final CellLayout layout = (CellLayout) getChildAt(page); 3216 cancelFolderCreation(); 3217 3218 if (layout != null) { 3219 // Exit the current layout and mark the overlapping layout 3220 if (mDragTargetLayout != null) { 3221 mDragTargetLayout.setIsDragOverlapping(false); 3222 mDragTargetLayout.onDragExit(); 3223 } 3224 mDragTargetLayout = layout; 3225 mDragTargetLayout.setIsDragOverlapping(true); 3226 3227 // Workspace is responsible for drawing the edge glow on adjacent pages, 3228 // so we need to redraw the workspace when this may have changed. 3229 invalidate(); 3230 result = true; 3231 } 3232 } 3233 return result; 3234 } 3235 3236 @Override 3237 public boolean onExitScrollArea() { 3238 boolean result = false; 3239 if (mInScrollArea) { 3240 if (mDragTargetLayout != null) { 3241 mDragTargetLayout.setIsDragOverlapping(false); 3242 // Workspace is responsible for drawing the edge glow on adjacent pages, 3243 // so we need to redraw the workspace when this may have changed. 3244 invalidate(); 3245 } 3246 if (mDragTargetLayout != null && mDragHasEnteredWorkspace) { 3247 // Unmark the overlapping layout and re-enter the current layout 3248 mDragTargetLayout = getCurrentDropLayout(); 3249 mDragTargetLayout.onDragEnter(); 3250 } 3251 result = true; 3252 mInScrollArea = false; 3253 } 3254 return result; 3255 } 3256 3257 private void onResetScrollArea() { 3258 if (mDragTargetLayout != null) { 3259 // Unmark the overlapping layout 3260 mDragTargetLayout.setIsDragOverlapping(false); 3261 3262 // Workspace is responsible for drawing the edge glow on adjacent pages, 3263 // so we need to redraw the workspace when this may have changed. 3264 invalidate(); 3265 } 3266 mInScrollArea = false; 3267 } 3268 3269 /** 3270 * Returns a specific CellLayout 3271 */ 3272 CellLayout getParentCellLayoutForView(View v) { 3273 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3274 for (CellLayout layout : layouts) { 3275 if (layout.getChildrenLayout().indexOfChild(v) > -1) { 3276 return layout; 3277 } 3278 } 3279 return null; 3280 } 3281 3282 /** 3283 * Returns a list of all the CellLayouts in the workspace. 3284 */ 3285 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3286 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3287 int screenCount = getChildCount(); 3288 for (int screen = 0; screen < screenCount; screen++) { 3289 layouts.add(((CellLayout) getChildAt(screen))); 3290 } 3291 if (mLauncher.getHotseat() != null) { 3292 layouts.add(mLauncher.getHotseat().getLayout()); 3293 } 3294 return layouts; 3295 } 3296 3297 /** 3298 * We should only use this to search for specific children. Do not use this method to modify 3299 * CellLayoutChildren directly. 3300 */ 3301 ArrayList<CellLayoutChildren> getWorkspaceAndHotseatCellLayoutChildren() { 3302 ArrayList<CellLayoutChildren> childrenLayouts = new ArrayList<CellLayoutChildren>(); 3303 int screenCount = getChildCount(); 3304 for (int screen = 0; screen < screenCount; screen++) { 3305 childrenLayouts.add(((CellLayout) getChildAt(screen)).getChildrenLayout()); 3306 } 3307 if (mLauncher.getHotseat() != null) { 3308 childrenLayouts.add(mLauncher.getHotseat().getLayout().getChildrenLayout()); 3309 } 3310 return childrenLayouts; 3311 } 3312 3313 public Folder getFolderForTag(Object tag) { 3314 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3315 for (CellLayoutChildren layout: childrenLayouts) { 3316 int count = layout.getChildCount(); 3317 for (int i = 0; i < count; i++) { 3318 View child = layout.getChildAt(i); 3319 if (child instanceof Folder) { 3320 Folder f = (Folder) child; 3321 if (f.getInfo() == tag && f.getInfo().opened) { 3322 return f; 3323 } 3324 } 3325 } 3326 } 3327 return null; 3328 } 3329 3330 public View getViewForTag(Object tag) { 3331 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3332 for (CellLayoutChildren layout: childrenLayouts) { 3333 int count = layout.getChildCount(); 3334 for (int i = 0; i < count; i++) { 3335 View child = layout.getChildAt(i); 3336 if (child.getTag() == tag) { 3337 return child; 3338 } 3339 } 3340 } 3341 return null; 3342 } 3343 3344 void clearDropTargets() { 3345 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3346 for (CellLayoutChildren layout: childrenLayouts) { 3347 int childCount = layout.getChildCount(); 3348 for (int j = 0; j < childCount; j++) { 3349 View v = layout.getChildAt(j); 3350 if (v instanceof DropTarget) { 3351 mDragController.removeDropTarget((DropTarget) v); 3352 } 3353 } 3354 } 3355 } 3356 3357 void removeItems(final ArrayList<ApplicationInfo> apps) { 3358 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3359 3360 final HashSet<String> packageNames = new HashSet<String>(); 3361 final int appCount = apps.size(); 3362 for (int i = 0; i < appCount; i++) { 3363 packageNames.add(apps.get(i).componentName.getPackageName()); 3364 } 3365 3366 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3367 for (final CellLayout layoutParent: cellLayouts) { 3368 final ViewGroup layout = layoutParent.getChildrenLayout(); 3369 3370 // Avoid ANRs by treating each screen separately 3371 post(new Runnable() { 3372 public void run() { 3373 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3374 childrenToRemove.clear(); 3375 3376 int childCount = layout.getChildCount(); 3377 for (int j = 0; j < childCount; j++) { 3378 final View view = layout.getChildAt(j); 3379 Object tag = view.getTag(); 3380 3381 if (tag instanceof ShortcutInfo) { 3382 final ShortcutInfo info = (ShortcutInfo) tag; 3383 final Intent intent = info.intent; 3384 final ComponentName name = intent.getComponent(); 3385 3386 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3387 for (String packageName: packageNames) { 3388 if (packageName.equals(name.getPackageName())) { 3389 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3390 childrenToRemove.add(view); 3391 } 3392 } 3393 } 3394 } else if (tag instanceof FolderInfo) { 3395 final FolderInfo info = (FolderInfo) tag; 3396 final ArrayList<ShortcutInfo> contents = info.contents; 3397 final int contentsCount = contents.size(); 3398 final ArrayList<ShortcutInfo> appsToRemoveFromFolder = 3399 new ArrayList<ShortcutInfo>(); 3400 3401 for (int k = 0; k < contentsCount; k++) { 3402 final ShortcutInfo appInfo = contents.get(k); 3403 final Intent intent = appInfo.intent; 3404 final ComponentName name = intent.getComponent(); 3405 3406 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3407 for (String packageName: packageNames) { 3408 if (packageName.equals(name.getPackageName())) { 3409 appsToRemoveFromFolder.add(appInfo); 3410 } 3411 } 3412 } 3413 } 3414 for (ShortcutInfo item: appsToRemoveFromFolder) { 3415 info.remove(item); 3416 LauncherModel.deleteItemFromDatabase(mLauncher, item); 3417 } 3418 } else if (tag instanceof LauncherAppWidgetInfo) { 3419 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3420 final AppWidgetProviderInfo provider = 3421 widgets.getAppWidgetInfo(info.appWidgetId); 3422 if (provider != null) { 3423 for (String packageName: packageNames) { 3424 if (packageName.equals(provider.provider.getPackageName())) { 3425 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3426 childrenToRemove.add(view); 3427 } 3428 } 3429 } 3430 } 3431 } 3432 3433 childCount = childrenToRemove.size(); 3434 for (int j = 0; j < childCount; j++) { 3435 View child = childrenToRemove.get(j); 3436 // Note: We can not remove the view directly from CellLayoutChildren as this 3437 // does not re-mark the spaces as unoccupied. 3438 layoutParent.removeViewInLayout(child); 3439 if (child instanceof DropTarget) { 3440 mDragController.removeDropTarget((DropTarget)child); 3441 } 3442 } 3443 3444 if (childCount > 0) { 3445 layout.requestLayout(); 3446 layout.invalidate(); 3447 } 3448 } 3449 }); 3450 } 3451 } 3452 3453 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3454 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3455 for (CellLayoutChildren layout: childrenLayouts) { 3456 int childCount = layout.getChildCount(); 3457 for (int j = 0; j < childCount; j++) { 3458 final View view = layout.getChildAt(j); 3459 Object tag = view.getTag(); 3460 if (tag instanceof ShortcutInfo) { 3461 ShortcutInfo info = (ShortcutInfo)tag; 3462 // We need to check for ACTION_MAIN otherwise getComponent() might 3463 // return null for some shortcuts (for instance, for shortcuts to 3464 // web pages.) 3465 final Intent intent = info.intent; 3466 final ComponentName name = intent.getComponent(); 3467 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3468 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3469 final int appCount = apps.size(); 3470 for (int k = 0; k < appCount; k++) { 3471 ApplicationInfo app = apps.get(k); 3472 if (app.componentName.equals(name)) { 3473 info.setIcon(mIconCache.getIcon(info.intent)); 3474 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 3475 new FastBitmapDrawable(info.getIcon(mIconCache)), 3476 null, null); 3477 } 3478 } 3479 } 3480 } 3481 } 3482 } 3483 } 3484 3485 void moveToDefaultScreen(boolean animate) { 3486 if (!isSmall()) { 3487 if (animate) { 3488 snapToPage(mDefaultPage); 3489 } else { 3490 setCurrentPage(mDefaultPage); 3491 } 3492 } 3493 getChildAt(mDefaultPage).requestFocus(); 3494 } 3495 3496 @Override 3497 public void syncPages() { 3498 } 3499 3500 @Override 3501 public void syncPageItems(int page, boolean immediate) { 3502 } 3503 3504 @Override 3505 protected String getCurrentPageDescription() { 3506 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 3507 return String.format(mContext.getString(R.string.workspace_scroll_format), 3508 page + 1, getChildCount()); 3509 } 3510 3511 public void getLocationInDragLayer(int[] loc) { 3512 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 3513 } 3514 3515 void setFadeForOverScroll(float fade) { 3516 if (!isScrollingIndicatorEnabled()) return; 3517 3518 mOverscrollFade = fade; 3519 float reducedFade = 0.5f + 0.5f * (1 - fade); 3520 final ViewGroup parent = (ViewGroup) getParent(); 3521 final ImageView qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3522 final ImageView dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3523 final ImageView scrollIndicator = getScrollingIndicator(); 3524 3525 cancelScrollingIndicatorAnimations(); 3526 if (qsbDivider != null) qsbDivider.setAlpha(reducedFade); 3527 if (dockDivider != null) dockDivider.setAlpha(reducedFade); 3528 scrollIndicator.setAlpha(1 - fade); 3529 } 3530} 3531