Workspace.java revision 7044272f180d34ab29866f6c59ee75376e8a1df5
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.launcher2; 18 19import android.animation.Animator; 20import android.animation.AnimatorSet; 21import android.animation.ObjectAnimator; 22import android.animation.TimeInterpolator; 23import android.animation.ValueAnimator; 24import android.animation.ValueAnimator.AnimatorUpdateListener; 25import android.app.AlertDialog; 26import android.app.WallpaperManager; 27import android.appwidget.AppWidgetHostView; 28import android.appwidget.AppWidgetManager; 29import android.appwidget.AppWidgetProviderInfo; 30import android.content.ClipData; 31import android.content.ClipDescription; 32import android.content.ComponentName; 33import android.content.Context; 34import android.content.Intent; 35import android.content.res.Resources; 36import android.content.res.TypedArray; 37import android.graphics.Bitmap; 38import android.graphics.Camera; 39import android.graphics.Canvas; 40import android.graphics.Matrix; 41import android.graphics.Paint; 42import android.graphics.Point; 43import android.graphics.PorterDuff; 44import android.graphics.Rect; 45import android.graphics.RectF; 46import android.graphics.Region.Op; 47import android.graphics.drawable.Drawable; 48import android.os.IBinder; 49import android.os.Parcelable; 50import android.util.AttributeSet; 51import android.util.DisplayMetrics; 52import android.util.Log; 53import android.util.Pair; 54import android.view.Display; 55import android.view.DragEvent; 56import android.view.MotionEvent; 57import android.view.View; 58import android.view.ViewConfiguration; 59import android.view.ViewGroup; 60import android.view.View.MeasureSpec; 61import android.view.animation.DecelerateInterpolator; 62import android.widget.ImageView; 63import android.widget.TextView; 64import android.widget.Toast; 65 66import com.android.launcher.R; 67import com.android.launcher2.FolderIcon.FolderRingAnimator; 68import com.android.launcher2.InstallWidgetReceiver.WidgetMimeTypeHandlerData; 69 70import java.util.ArrayList; 71import java.util.HashSet; 72import java.util.List; 73 74/** 75 * The workspace is a wide area with a wallpaper and a finite number of pages. 76 * Each page contains a number of icons, folders or widgets the user can 77 * interact with. A workspace is meant to be used with a fixed width only. 78 */ 79public class Workspace extends SmoothPagedView 80 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 81 DragController.DragListener, LauncherTransitionable { 82 @SuppressWarnings({"UnusedDeclaration"}) 83 private static final String TAG = "Launcher.Workspace"; 84 85 // Y rotation to apply to the workspace screens 86 private static final float WORKSPACE_ROTATION = 12.5f; 87 private static final float WORKSPACE_OVERSCROLL_ROTATION = 24f; 88 private static float CAMERA_DISTANCE = 6500; 89 90 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 91 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 92 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 93 94 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 95 private static final int ADJACENT_SCREEN_DROP_DURATION = 300; 96 private static final int FLING_THRESHOLD_VELOCITY = 500; 97 98 // These animators are used to fade the children's outlines 99 private ObjectAnimator mChildrenOutlineFadeInAnimation; 100 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 101 private float mChildrenOutlineAlpha = 0; 102 103 // These properties refer to the background protection gradient used for AllApps and Customize 104 private ValueAnimator mBackgroundFadeInAnimation; 105 private ValueAnimator mBackgroundFadeOutAnimation; 106 private Drawable mBackground; 107 boolean mDrawBackground = true; 108 private float mBackgroundAlpha = 0; 109 private float mOverScrollMaxBackgroundAlpha = 0.0f; 110 private int mOverScrollPageIndex = -1; 111 112 private float mWallpaperScrollRatio = 1.0f; 113 114 private final WallpaperManager mWallpaperManager; 115 private IBinder mWindowToken; 116 private static final float WALLPAPER_SCREENS_SPAN = 2f; 117 118 private int mDefaultPage; 119 120 /** 121 * CellInfo for the cell that is currently being dragged 122 */ 123 private CellLayout.CellInfo mDragInfo; 124 125 /** 126 * Target drop area calculated during last acceptDrop call. 127 */ 128 private int[] mTargetCell = new int[2]; 129 130 /** 131 * The CellLayout that is currently being dragged over 132 */ 133 private CellLayout mDragTargetLayout = null; 134 private boolean mDragHasEnteredWorkspace = false; 135 136 private Launcher mLauncher; 137 private IconCache mIconCache; 138 private DragController mDragController; 139 140 // These are temporary variables to prevent having to allocate a new object just to 141 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 142 private int[] mTempCell = new int[2]; 143 private int[] mTempEstimate = new int[2]; 144 private float[] mDragViewVisualCenter = new float[2]; 145 private float[] mTempDragCoordinates = new float[2]; 146 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 147 private float[] mTempDragBottomRightCoordinates = new float[2]; 148 private Matrix mTempInverseMatrix = new Matrix(); 149 150 private SpringLoadedDragController mSpringLoadedDragController; 151 private float mSpringLoadedShrinkFactor; 152 153 private static final int DEFAULT_CELL_COUNT_X = 4; 154 private static final int DEFAULT_CELL_COUNT_Y = 4; 155 156 // State variable that indicates whether the pages are small (ie when you're 157 // in all apps or customize mode) 158 159 enum State { NORMAL, SPRING_LOADED, SMALL }; 160 private State mState = State.NORMAL; 161 private boolean mIsSwitchingState = false; 162 163 boolean mAnimatingViewIntoPlace = false; 164 boolean mIsDragOccuring = false; 165 boolean mChildrenLayersEnabled = true; 166 167 /** Is the user is dragging an item near the edge of a page? */ 168 private boolean mInScrollArea = false; 169 170 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 171 private Bitmap mDragOutline = null; 172 private final Rect mTempRect = new Rect(); 173 private final int[] mTempXY = new int[2]; 174 private float mOverscrollFade = 0; 175 176 // Paint used to draw external drop outline 177 private final Paint mExternalDragOutlinePaint = new Paint(); 178 179 // Camera and Matrix used to determine the final position of a neighboring CellLayout 180 private final Matrix mMatrix = new Matrix(); 181 private final Camera mCamera = new Camera(); 182 private final float mTempFloat2[] = new float[2]; 183 184 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 185 int mWallpaperWidth; 186 int mWallpaperHeight; 187 WallpaperOffsetInterpolator mWallpaperOffset; 188 boolean mUpdateWallpaperOffsetImmediately = false; 189 private Runnable mDelayedResizeRunnable; 190 private int mDisplayWidth; 191 private int mDisplayHeight; 192 private int mWallpaperTravelWidth; 193 194 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 195 private static final int FOLDER_CREATION_TIMEOUT = 250; 196 private final Alarm mFolderCreationAlarm = new Alarm(); 197 private FolderRingAnimator mDragFolderRingAnimator = null; 198 private View mLastDragOverView = null; 199 private boolean mCreateUserFolderOnDrop = false; 200 201 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 202 private float mXDown; 203 private float mYDown; 204 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 205 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 206 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 207 208 // Relating to the animation of items being dropped externally 209 public static final int ANIMATE_INTO_POSITION = 0; 210 public static final int COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION = 1; 211 public static final int CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION = 2; 212 213 // These variables are used for storing the initial and final values during workspace animations 214 private int mSavedScrollX; 215 private float mSavedRotationY; 216 private float mSavedTranslationX; 217 private float mCurrentScaleX; 218 private float mCurrentScaleY; 219 private float mCurrentRotationY; 220 private float mCurrentTranslationX; 221 private float mCurrentTranslationY; 222 private float[] mOldTranslationXs; 223 private float[] mOldTranslationYs; 224 private float[] mOldScaleXs; 225 private float[] mOldScaleYs; 226 private float[] mOldBackgroundAlphas; 227 private float[] mOldBackgroundAlphaMultipliers; 228 private float[] mOldAlphas; 229 private float[] mOldRotationYs; 230 private float[] mNewTranslationXs; 231 private float[] mNewTranslationYs; 232 private float[] mNewScaleXs; 233 private float[] mNewScaleYs; 234 private float[] mNewBackgroundAlphas; 235 private float[] mNewBackgroundAlphaMultipliers; 236 private float[] mNewAlphas; 237 private float[] mNewRotationYs; 238 private float mTransitionProgress; 239 240 /** 241 * Used to inflate the Workspace from XML. 242 * 243 * @param context The application's context. 244 * @param attrs The attributes set containing the Workspace's customization values. 245 */ 246 public Workspace(Context context, AttributeSet attrs) { 247 this(context, attrs, 0); 248 } 249 250 /** 251 * Used to inflate the Workspace from XML. 252 * 253 * @param context The application's context. 254 * @param attrs The attributes set containing the Workspace's customization values. 255 * @param defStyle Unused. 256 */ 257 public Workspace(Context context, AttributeSet attrs, int defStyle) { 258 super(context, attrs, defStyle); 259 mContentIsRefreshable = false; 260 261 // With workspace, data is available straight from the get-go 262 setDataIsReady(); 263 264 mFadeInAdjacentScreens = 265 getResources().getBoolean(R.bool.config_workspaceFadeAdjacentScreens); 266 mWallpaperManager = WallpaperManager.getInstance(context); 267 268 int cellCountX = DEFAULT_CELL_COUNT_X; 269 int cellCountY = DEFAULT_CELL_COUNT_Y; 270 271 TypedArray a = context.obtainStyledAttributes(attrs, 272 R.styleable.Workspace, defStyle, 0); 273 274 final Resources res = context.getResources(); 275 if (LauncherApplication.isScreenLarge()) { 276 // Determine number of rows/columns dynamically 277 // TODO: This code currently fails on tablets with an aspect ratio < 1.3. 278 // Around that ratio we should make cells the same size in portrait and 279 // landscape 280 TypedArray actionBarSizeTypedArray = 281 context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize }); 282 DisplayMetrics displayMetrics = res.getDisplayMetrics(); 283 final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); 284 final float systemBarHeight = res.getDimension(R.dimen.status_bar_height); 285 final float smallestScreenDim = res.getConfiguration().smallestScreenWidthDp * 286 displayMetrics.density; 287 288 cellCountX = 1; 289 while (CellLayout.widthInPortrait(res, cellCountX + 1) <= smallestScreenDim) { 290 cellCountX++; 291 } 292 293 cellCountY = 1; 294 while (actionBarHeight + CellLayout.heightInLandscape(res, cellCountY + 1) 295 <= smallestScreenDim - systemBarHeight) { 296 cellCountY++; 297 } 298 } 299 300 mSpringLoadedShrinkFactor = 301 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 302 303 // if the value is manually specified, use that instead 304 cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX); 305 cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY); 306 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 307 a.recycle(); 308 309 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 310 setHapticFeedbackEnabled(false); 311 312 mLauncher = (Launcher) context; 313 initWorkspace(); 314 315 // Disable multitouch across the workspace/all apps/customize tray 316 setMotionEventSplittingEnabled(true); 317 } 318 319 // estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each 320 // dimension if unsuccessful 321 public int[] estimateItemSize(int hSpan, int vSpan, 322 PendingAddItemInfo pendingItemInfo, boolean springLoaded) { 323 int[] size = new int[2]; 324 if (getChildCount() > 0) { 325 CellLayout cl = (CellLayout) mLauncher.getWorkspace().getChildAt(0); 326 RectF r = estimateItemPosition(cl, pendingItemInfo, 0, 0, hSpan, vSpan); 327 size[0] = (int) r.width(); 328 size[1] = (int) r.height(); 329 if (springLoaded) { 330 size[0] *= mSpringLoadedShrinkFactor; 331 size[1] *= mSpringLoadedShrinkFactor; 332 } 333 return size; 334 } else { 335 size[0] = Integer.MAX_VALUE; 336 size[1] = Integer.MAX_VALUE; 337 return size; 338 } 339 } 340 public RectF estimateItemPosition(CellLayout cl, ItemInfo pendingInfo, 341 int hCell, int vCell, int hSpan, int vSpan) { 342 RectF r = new RectF(); 343 cl.cellToRect(hCell, vCell, hSpan, vSpan, r); 344 return r; 345 } 346 347 public void buildPageHardwareLayers() { 348 if (getWindowToken() != null) { 349 final int childCount = getChildCount(); 350 for (int i = 0; i < childCount; i++) { 351 CellLayout cl = (CellLayout) getChildAt(i); 352 cl.buildChildrenLayer(); 353 } 354 } 355 } 356 357 public void onDragStart(DragSource source, Object info, int dragAction) { 358 mIsDragOccuring = true; 359 updateChildrenLayersEnabled(); 360 mLauncher.lockScreenOrientationOnLargeUI(); 361 } 362 363 public void onDragEnd() { 364 mIsDragOccuring = false; 365 updateChildrenLayersEnabled(); 366 mLauncher.unlockScreenOrientationOnLargeUI(); 367 } 368 369 /** 370 * Initializes various states for this workspace. 371 */ 372 protected void initWorkspace() { 373 Context context = getContext(); 374 mCurrentPage = mDefaultPage; 375 Launcher.setScreen(mCurrentPage); 376 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 377 mIconCache = app.getIconCache(); 378 mExternalDragOutlinePaint.setAntiAlias(true); 379 setWillNotDraw(false); 380 setChildrenDrawnWithCacheEnabled(true); 381 382 try { 383 final Resources res = getResources(); 384 mBackground = res.getDrawable(R.drawable.apps_customize_bg); 385 } catch (Resources.NotFoundException e) { 386 // In this case, we will skip drawing background protection 387 } 388 389 mWallpaperOffset = new WallpaperOffsetInterpolator(); 390 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 391 mDisplayWidth = display.getWidth(); 392 mDisplayHeight = display.getHeight(); 393 mWallpaperTravelWidth = (int) (mDisplayWidth * 394 wallpaperTravelToScreenWidthRatio(mDisplayWidth, mDisplayHeight)); 395 396 mFlingThresholdVelocity = (int) (FLING_THRESHOLD_VELOCITY * mDensity); 397 398 } 399 400 @Override 401 protected int getScrollMode() { 402 return SmoothPagedView.X_LARGE_MODE; 403 } 404 405 @Override 406 protected void onViewAdded(View child) { 407 super.onViewAdded(child); 408 if (!(child instanceof CellLayout)) { 409 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 410 } 411 CellLayout cl = ((CellLayout) child); 412 cl.setOnInterceptTouchListener(this); 413 cl.setClickable(true); 414 cl.enableHardwareLayers(); 415 } 416 417 /** 418 * @return The open folder on the current screen, or null if there is none 419 */ 420 Folder getOpenFolder() { 421 DragLayer dragLayer = mLauncher.getDragLayer(); 422 int count = dragLayer.getChildCount(); 423 for (int i = 0; i < count; i++) { 424 View child = dragLayer.getChildAt(i); 425 if (child instanceof Folder) { 426 Folder folder = (Folder) child; 427 if (folder.getInfo().opened) 428 return folder; 429 } 430 } 431 return null; 432 } 433 434 boolean isTouchActive() { 435 return mTouchState != TOUCH_STATE_REST; 436 } 437 438 /** 439 * Adds the specified child in the specified screen. The position and dimension of 440 * the child are defined by x, y, spanX and spanY. 441 * 442 * @param child The child to add in one of the workspace's screens. 443 * @param screen The screen in which to add the child. 444 * @param x The X position of the child in the screen's grid. 445 * @param y The Y position of the child in the screen's grid. 446 * @param spanX The number of cells spanned horizontally by the child. 447 * @param spanY The number of cells spanned vertically by the child. 448 */ 449 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY) { 450 addInScreen(child, container, screen, x, y, spanX, spanY, false); 451 } 452 453 /** 454 * Adds the specified child in the specified screen. The position and dimension of 455 * the child are defined by x, y, spanX and spanY. 456 * 457 * @param child The child to add in one of the workspace's screens. 458 * @param screen The screen in which to add the child. 459 * @param x The X position of the child in the screen's grid. 460 * @param y The Y position of the child in the screen's grid. 461 * @param spanX The number of cells spanned horizontally by the child. 462 * @param spanY The number of cells spanned vertically by the child. 463 * @param insert When true, the child is inserted at the beginning of the children list. 464 */ 465 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY, 466 boolean insert) { 467 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 468 if (screen < 0 || screen >= getChildCount()) { 469 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 470 + " (was " + screen + "); skipping child"); 471 return; 472 } 473 } 474 475 final CellLayout layout; 476 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 477 layout = mLauncher.getHotseat().getLayout(); 478 child.setOnKeyListener(null); 479 480 // Hide folder title in the hotseat 481 if (child instanceof FolderIcon) { 482 ((FolderIcon) child).setTextVisible(false); 483 } 484 485 if (screen < 0) { 486 screen = mLauncher.getHotseat().getOrderInHotseat(x, y); 487 } else { 488 // Note: We do this to ensure that the hotseat is always laid out in the orientation 489 // of the hotseat in order regardless of which orientation they were added 490 x = mLauncher.getHotseat().getCellXFromOrder(screen); 491 y = mLauncher.getHotseat().getCellYFromOrder(screen); 492 } 493 } else { 494 // Show folder title if not in the hotseat 495 if (child instanceof FolderIcon) { 496 ((FolderIcon) child).setTextVisible(true); 497 } 498 499 layout = (CellLayout) getChildAt(screen); 500 child.setOnKeyListener(new IconKeyEventListener()); 501 } 502 503 LayoutParams genericLp = child.getLayoutParams(); 504 CellLayout.LayoutParams lp; 505 if (genericLp == null || !(genericLp instanceof CellLayout.LayoutParams)) { 506 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 507 } else { 508 lp = (CellLayout.LayoutParams) genericLp; 509 lp.cellX = x; 510 lp.cellY = y; 511 lp.cellHSpan = spanX; 512 lp.cellVSpan = spanY; 513 } 514 515 if (spanX < 0 && spanY < 0) { 516 lp.isLockedToGrid = false; 517 } 518 519 // Get the canonical child id to uniquely represent this view in this screen 520 int childId = LauncherModel.getCellLayoutChildId(container, screen, x, y, spanX, spanY); 521 boolean markCellsAsOccupied = !(child instanceof Folder); 522 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 523 // TODO: This branch occurs when the workspace is adding views 524 // outside of the defined grid 525 // maybe we should be deleting these items from the LauncherModel? 526 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 527 } 528 529 if (!(child instanceof Folder)) { 530 child.setHapticFeedbackEnabled(false); 531 child.setOnLongClickListener(mLongClickListener); 532 } 533 if (child instanceof DropTarget) { 534 mDragController.addDropTarget((DropTarget) child); 535 } 536 } 537 538 /** 539 * Check if the point (x, y) hits a given page. 540 */ 541 private boolean hitsPage(int index, float x, float y) { 542 final View page = getChildAt(index); 543 if (page != null) { 544 float[] localXY = { x, y }; 545 mapPointFromSelfToChild(page, localXY); 546 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 547 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 548 } 549 return false; 550 } 551 552 @Override 553 protected boolean hitsPreviousPage(float x, float y) { 554 // mNextPage is set to INVALID_PAGE whenever we are stationary. 555 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 556 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 557 558 // Only allow tap to next page on large devices, where there's significant margin outside 559 // the active workspace 560 return LauncherApplication.isScreenLarge() && hitsPage(current - 1, x, y); 561 } 562 563 @Override 564 protected boolean hitsNextPage(float x, float y) { 565 // mNextPage is set to INVALID_PAGE whenever we are stationary. 566 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 567 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 568 569 // Only allow tap to next page on large devices, where there's significant margin outside 570 // the active workspace 571 return LauncherApplication.isScreenLarge() && hitsPage(current + 1, x, y); 572 } 573 574 /** 575 * Called directly from a CellLayout (not by the framework), after we've been added as a 576 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 577 * that it should intercept touch events, which is not something that is normally supported. 578 */ 579 @Override 580 public boolean onTouch(View v, MotionEvent event) { 581 return (isSmall() || !isFinishedSwitchingState()); 582 } 583 584 public boolean isSwitchingState() { 585 return mIsSwitchingState; 586 } 587 588 /** This differs from isSwitchingState in that we take into account how far the transition 589 * has completed. */ 590 private boolean isFinishedSwitchingState() { 591 return !mIsSwitchingState || (mTransitionProgress > 0.5f); 592 } 593 594 protected void onWindowVisibilityChanged (int visibility) { 595 mLauncher.onWindowVisibilityChanged(visibility); 596 } 597 598 @Override 599 public boolean dispatchUnhandledMove(View focused, int direction) { 600 if (isSmall() || !isFinishedSwitchingState()) { 601 // when the home screens are shrunken, shouldn't allow side-scrolling 602 return false; 603 } 604 return super.dispatchUnhandledMove(focused, direction); 605 } 606 607 @Override 608 public boolean onInterceptTouchEvent(MotionEvent ev) { 609 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 610 case MotionEvent.ACTION_DOWN: 611 mXDown = ev.getX(); 612 mYDown = ev.getY(); 613 break; 614 case MotionEvent.ACTION_POINTER_UP: 615 case MotionEvent.ACTION_UP: 616 if (mTouchState == TOUCH_STATE_REST) { 617 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 618 if (!currentPage.lastDownOnOccupiedCell()) { 619 onWallpaperTap(ev); 620 } 621 } 622 } 623 return super.onInterceptTouchEvent(ev); 624 } 625 626 @Override 627 protected void determineScrollingStart(MotionEvent ev) { 628 if (isSmall()) return; 629 if (!isFinishedSwitchingState()) return; 630 631 float deltaX = Math.abs(ev.getX() - mXDown); 632 float deltaY = Math.abs(ev.getY() - mYDown); 633 634 if (Float.compare(deltaX, 0f) == 0) return; 635 636 float slope = deltaY / deltaX; 637 float theta = (float) Math.atan(slope); 638 639 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 640 cancelCurrentPageLongPress(); 641 } 642 643 if (theta > MAX_SWIPE_ANGLE) { 644 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 645 return; 646 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 647 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 648 // increase the touch slop to make it harder to begin scrolling the workspace. This 649 // results in vertically scrolling widgets to more easily. The higher the angle, the 650 // more we increase touch slop. 651 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 652 float extraRatio = (float) 653 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 654 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 655 } else { 656 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 657 super.determineScrollingStart(ev); 658 } 659 } 660 661 @Override 662 protected boolean isScrollingIndicatorEnabled() { 663 return mState != State.SPRING_LOADED; 664 } 665 666 protected void onPageBeginMoving() { 667 super.onPageBeginMoving(); 668 669 if (isHardwareAccelerated()) { 670 updateChildrenLayersEnabled(); 671 } else { 672 if (mNextPage != INVALID_PAGE) { 673 // we're snapping to a particular screen 674 enableChildrenCache(mCurrentPage, mNextPage); 675 } else { 676 // this is when user is actively dragging a particular screen, they might 677 // swipe it either left or right (but we won't advance by more than one screen) 678 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 679 } 680 } 681 682 // Only show page outlines as we pan if we are on large screen 683 if (LauncherApplication.isScreenLarge()) { 684 showOutlines(); 685 } 686 687 // If we are not fading in adjacent screens, we still need to restore the alpha in case the 688 // user scrolls while we are transitioning (should not affect dispatchDraw optimizations) 689 if (!mFadeInAdjacentScreens) { 690 for (int i = 0; i < getChildCount(); ++i) { 691 getPageAt(i).setAlpha(1f); 692 } 693 } 694 695 // Show the scroll indicator as you pan the page 696 showScrollingIndicator(false); 697 } 698 699 protected void onPageEndMoving() { 700 super.onPageEndMoving(); 701 702 if (isHardwareAccelerated()) { 703 updateChildrenLayersEnabled(); 704 } else { 705 clearChildrenCache(); 706 } 707 708 709 if (mDragController.isDragging()) { 710 if (isSmall()) { 711 // If we are in springloaded mode, then force an event to check if the current touch 712 // is under a new page (to scroll to) 713 mDragController.forceMoveEvent(); 714 } 715 } else { 716 // If we are not mid-dragging, hide the page outlines if we are on a large screen 717 if (LauncherApplication.isScreenLarge()) { 718 hideOutlines(); 719 } 720 721 // Hide the scroll indicator as you pan the page 722 if (!mDragController.isDragging()) { 723 hideScrollingIndicator(false); 724 } 725 } 726 mOverScrollMaxBackgroundAlpha = 0.0f; 727 mOverScrollPageIndex = -1; 728 729 if (mDelayedResizeRunnable != null) { 730 mDelayedResizeRunnable.run(); 731 mDelayedResizeRunnable = null; 732 } 733 } 734 735 @Override 736 protected void notifyPageSwitchListener() { 737 super.notifyPageSwitchListener(); 738 Launcher.setScreen(mCurrentPage); 739 }; 740 741 // As a ratio of screen height, the total distance we want the parallax effect to span 742 // horizontally 743 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 744 float aspectRatio = width / (float) height; 745 746 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 747 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 748 // We will use these two data points to extrapolate how much the wallpaper parallax effect 749 // to span (ie travel) at any aspect ratio: 750 751 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 752 final float ASPECT_RATIO_PORTRAIT = 10/16f; 753 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 754 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 755 756 // To find out the desired width at different aspect ratios, we use the following two 757 // formulas, where the coefficient on x is the aspect ratio (width/height): 758 // (16/10)x + y = 1.5 759 // (10/16)x + y = 1.2 760 // We solve for x and y and end up with a final formula: 761 final float x = 762 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 763 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 764 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 765 return x * aspectRatio + y; 766 } 767 768 // The range of scroll values for Workspace 769 private int getScrollRange() { 770 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 771 } 772 773 protected void setWallpaperDimension() { 774 DisplayMetrics displayMetrics = new DisplayMetrics(); 775 mLauncher.getWindowManager().getDefaultDisplay().getRealMetrics(displayMetrics); 776 final int maxDim = Math.max(displayMetrics.widthPixels, displayMetrics.heightPixels); 777 final int minDim = Math.min(displayMetrics.widthPixels, displayMetrics.heightPixels); 778 779 // We need to ensure that there is enough extra space in the wallpaper for the intended 780 // parallax effects 781 if (LauncherApplication.isScreenLarge()) { 782 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 783 mWallpaperHeight = maxDim; 784 } else { 785 mWallpaperWidth = Math.max((int) (minDim * WALLPAPER_SCREENS_SPAN), maxDim); 786 mWallpaperHeight = maxDim; 787 } 788 new Thread("setWallpaperDimension") { 789 public void run() { 790 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 791 } 792 }.start(); 793 } 794 795 public void setVerticalWallpaperOffset(float offset) { 796 mWallpaperOffset.setFinalY(offset); 797 } 798 public float getVerticalWallpaperOffset() { 799 return mWallpaperOffset.getCurrY(); 800 } 801 public void setHorizontalWallpaperOffset(float offset) { 802 mWallpaperOffset.setFinalX(offset); 803 } 804 public float getHorizontalWallpaperOffset() { 805 return mWallpaperOffset.getCurrX(); 806 } 807 808 private float wallpaperOffsetForCurrentScroll() { 809 // The wallpaper travel width is how far, from left to right, the wallpaper will move 810 // at this orientation. On tablets in portrait mode we don't move all the way to the 811 // edges of the wallpaper, or otherwise the parallax effect would be too strong. 812 int wallpaperTravelWidth = mWallpaperWidth; 813 if (LauncherApplication.isScreenLarge()) { 814 wallpaperTravelWidth = mWallpaperTravelWidth; 815 } 816 817 // Set wallpaper offset steps (1 / (number of screens - 1)) 818 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f); 819 820 // For the purposes of computing the scrollRange and overScrollOffset, we assume 821 // that mLayoutScale is 1. This means that when we're in spring-loaded mode, 822 // there's no discrepancy between the wallpaper offset for a given page. 823 float layoutScale = mLayoutScale; 824 mLayoutScale = 1f; 825 int scrollRange = getScrollRange(); 826 827 // Again, we adjust the wallpaper offset to be consistent between values of mLayoutScale 828 float adjustedScrollX = Math.max(0, Math.min(mScrollX, mMaxScrollX)); 829 adjustedScrollX *= mWallpaperScrollRatio; 830 mLayoutScale = layoutScale; 831 832 float scrollProgress = 833 adjustedScrollX / (float) scrollRange; 834 float offsetInDips = wallpaperTravelWidth * scrollProgress + 835 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 836 float offset = offsetInDips / (float) mWallpaperWidth; 837 return offset; 838 } 839 private void syncWallpaperOffsetWithScroll() { 840 final boolean enableWallpaperEffects = isHardwareAccelerated(); 841 if (enableWallpaperEffects) { 842 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 843 } 844 } 845 846 public void updateWallpaperOffsetImmediately() { 847 mUpdateWallpaperOffsetImmediately = true; 848 } 849 850 private void updateWallpaperOffsets() { 851 boolean updateNow = false; 852 boolean keepUpdating = true; 853 if (mUpdateWallpaperOffsetImmediately) { 854 updateNow = true; 855 keepUpdating = false; 856 mWallpaperOffset.jumpToFinal(); 857 mUpdateWallpaperOffsetImmediately = false; 858 } else { 859 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 860 } 861 if (updateNow) { 862 if (mWindowToken != null) { 863 mWallpaperManager.setWallpaperOffsets(mWindowToken, 864 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 865 } 866 } 867 if (keepUpdating) { 868 invalidate(); 869 } 870 } 871 872 @Override 873 protected void updateCurrentPageScroll() { 874 super.updateCurrentPageScroll(); 875 computeWallpaperScrollRatio(mCurrentPage); 876 } 877 878 @Override 879 protected void snapToPage(int whichPage) { 880 super.snapToPage(whichPage); 881 computeWallpaperScrollRatio(whichPage); 882 } 883 884 private void computeWallpaperScrollRatio(int page) { 885 // Here, we determine what the desired scroll would be with and without a layout scale, 886 // and compute a ratio between the two. This allows us to adjust the wallpaper offset 887 // as though there is no layout scale. 888 float layoutScale = mLayoutScale; 889 int scaled = getChildOffset(page) - getRelativeChildOffset(page); 890 mLayoutScale = 1.0f; 891 float unscaled = getChildOffset(page) - getRelativeChildOffset(page); 892 mLayoutScale = layoutScale; 893 if (scaled > 0) { 894 mWallpaperScrollRatio = (1.0f * unscaled) / scaled; 895 } else { 896 mWallpaperScrollRatio = 1f; 897 } 898 } 899 900 class WallpaperOffsetInterpolator { 901 float mFinalHorizontalWallpaperOffset = 0.0f; 902 float mFinalVerticalWallpaperOffset = 0.5f; 903 float mHorizontalWallpaperOffset = 0.0f; 904 float mVerticalWallpaperOffset = 0.5f; 905 long mLastWallpaperOffsetUpdateTime; 906 boolean mIsMovingFast; 907 boolean mOverrideHorizontalCatchupConstant; 908 float mHorizontalCatchupConstant = 0.35f; 909 float mVerticalCatchupConstant = 0.35f; 910 911 public WallpaperOffsetInterpolator() { 912 } 913 914 public void setOverrideHorizontalCatchupConstant(boolean override) { 915 mOverrideHorizontalCatchupConstant = override; 916 } 917 918 public void setHorizontalCatchupConstant(float f) { 919 mHorizontalCatchupConstant = f; 920 } 921 922 public void setVerticalCatchupConstant(float f) { 923 mVerticalCatchupConstant = f; 924 } 925 926 public boolean computeScrollOffset() { 927 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 928 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 929 mIsMovingFast = false; 930 return false; 931 } 932 boolean isLandscape = mDisplayWidth > mDisplayHeight; 933 934 long currentTime = System.currentTimeMillis(); 935 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 936 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 937 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 938 939 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 940 if (!mIsMovingFast && xdiff > 0.07) { 941 mIsMovingFast = true; 942 } 943 944 float fractionToCatchUpIn1MsHorizontal; 945 if (mOverrideHorizontalCatchupConstant) { 946 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 947 } else if (mIsMovingFast) { 948 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 949 } else { 950 // slow 951 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 952 } 953 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 954 955 fractionToCatchUpIn1MsHorizontal /= 33f; 956 fractionToCatchUpIn1MsVertical /= 33f; 957 958 final float UPDATE_THRESHOLD = 0.00001f; 959 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 960 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 961 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 962 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 963 964 // Don't have any lag between workspace and wallpaper on non-large devices 965 if (!LauncherApplication.isScreenLarge() || jumpToFinalValue) { 966 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 967 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 968 } else { 969 float percentToCatchUpVertical = 970 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 971 float percentToCatchUpHorizontal = 972 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 973 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 974 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 975 } 976 977 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 978 return true; 979 } 980 981 public float getCurrX() { 982 return mHorizontalWallpaperOffset; 983 } 984 985 public float getFinalX() { 986 return mFinalHorizontalWallpaperOffset; 987 } 988 989 public float getCurrY() { 990 return mVerticalWallpaperOffset; 991 } 992 993 public float getFinalY() { 994 return mFinalVerticalWallpaperOffset; 995 } 996 997 public void setFinalX(float x) { 998 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 999 } 1000 1001 public void setFinalY(float y) { 1002 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 1003 } 1004 1005 public void jumpToFinal() { 1006 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 1007 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 1008 } 1009 } 1010 1011 @Override 1012 public void computeScroll() { 1013 super.computeScroll(); 1014 syncWallpaperOffsetWithScroll(); 1015 } 1016 1017 void showOutlines() { 1018 if (!isSmall() && !mIsSwitchingState) { 1019 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1020 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1021 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 1022 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 1023 mChildrenOutlineFadeInAnimation.start(); 1024 } 1025 } 1026 1027 void hideOutlines() { 1028 if (!isSmall() && !mIsSwitchingState) { 1029 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1030 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1031 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 1032 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 1033 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 1034 mChildrenOutlineFadeOutAnimation.start(); 1035 } 1036 } 1037 1038 public void showOutlinesTemporarily() { 1039 if (!mIsPageMoving && !isTouchActive()) { 1040 snapToPage(mCurrentPage); 1041 } 1042 } 1043 1044 public void setChildrenOutlineAlpha(float alpha) { 1045 mChildrenOutlineAlpha = alpha; 1046 for (int i = 0; i < getChildCount(); i++) { 1047 CellLayout cl = (CellLayout) getChildAt(i); 1048 cl.setBackgroundAlpha(alpha); 1049 } 1050 } 1051 1052 public float getChildrenOutlineAlpha() { 1053 return mChildrenOutlineAlpha; 1054 } 1055 1056 void disableBackground() { 1057 mDrawBackground = false; 1058 } 1059 void enableBackground() { 1060 mDrawBackground = true; 1061 } 1062 1063 private void animateBackgroundGradient(float finalAlpha, boolean animated) { 1064 if (mBackground == null) return; 1065 if (mBackgroundFadeInAnimation != null) { 1066 mBackgroundFadeInAnimation.cancel(); 1067 mBackgroundFadeInAnimation = null; 1068 } 1069 if (mBackgroundFadeOutAnimation != null) { 1070 mBackgroundFadeOutAnimation.cancel(); 1071 mBackgroundFadeOutAnimation = null; 1072 } 1073 float startAlpha = getBackgroundAlpha(); 1074 if (finalAlpha != startAlpha) { 1075 if (animated) { 1076 mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(startAlpha, finalAlpha); 1077 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1078 public void onAnimationUpdate(ValueAnimator animation) { 1079 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1080 } 1081 }); 1082 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1083 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1084 mBackgroundFadeOutAnimation.start(); 1085 } else { 1086 setBackgroundAlpha(finalAlpha); 1087 } 1088 } 1089 } 1090 1091 public void setBackgroundAlpha(float alpha) { 1092 if (alpha != mBackgroundAlpha) { 1093 mBackgroundAlpha = alpha; 1094 invalidate(); 1095 } 1096 } 1097 1098 public float getBackgroundAlpha() { 1099 return mBackgroundAlpha; 1100 } 1101 1102 /** 1103 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 1104 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 1105 * as being larger. This method computes what offset the rotated view should be translated 1106 * in order to minimize this perceived gap. 1107 * @param degrees Angle of the view 1108 * @param width Width of the view 1109 * @param height Height of the view 1110 * @return Offset to be used in a View.setTranslationX() call 1111 */ 1112 private float getOffsetXForRotation(float degrees, int width, int height) { 1113 mMatrix.reset(); 1114 mCamera.save(); 1115 mCamera.rotateY(Math.abs(degrees)); 1116 mCamera.getMatrix(mMatrix); 1117 mCamera.restore(); 1118 1119 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 1120 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 1121 mTempFloat2[0] = width; 1122 mTempFloat2[1] = height; 1123 mMatrix.mapPoints(mTempFloat2); 1124 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 1125 } 1126 1127 float backgroundAlphaInterpolator(float r) { 1128 float pivotA = 0.1f; 1129 float pivotB = 0.4f; 1130 if (r < pivotA) { 1131 return 0; 1132 } else if (r > pivotB) { 1133 return 1.0f; 1134 } else { 1135 return (r - pivotA)/(pivotB - pivotA); 1136 } 1137 } 1138 1139 float overScrollBackgroundAlphaInterpolator(float r) { 1140 float threshold = 0.08f; 1141 1142 if (r > mOverScrollMaxBackgroundAlpha) { 1143 mOverScrollMaxBackgroundAlpha = r; 1144 } else if (r < mOverScrollMaxBackgroundAlpha) { 1145 r = mOverScrollMaxBackgroundAlpha; 1146 } 1147 1148 return Math.min(r / threshold, 1.0f); 1149 } 1150 1151 private void screenScrolledLargeUI(int screenCenter) { 1152 if (isSwitchingState()) return; 1153 boolean isInOverscroll = false; 1154 for (int i = 0; i < getChildCount(); i++) { 1155 CellLayout cl = (CellLayout) getChildAt(i); 1156 if (cl != null) { 1157 float scrollProgress = getScrollProgress(screenCenter, cl, i); 1158 float rotation = WORKSPACE_ROTATION * scrollProgress; 1159 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1160 1161 // If the current page (i) is being over scrolled, we use a different 1162 // set of rules for setting the background alpha multiplier. 1163 if (!isSmall()) { 1164 if ((mOverScrollX < 0 && i == 0) || (mOverScrollX > mMaxScrollX && 1165 i == getChildCount() -1)) { 1166 isInOverscroll = true; 1167 rotation *= -1; 1168 cl.setBackgroundAlphaMultiplier( 1169 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 1170 mOverScrollPageIndex = i; 1171 cl.setOverScrollAmount(Math.abs(scrollProgress), i == 0); 1172 cl.setPivotX(cl.getMeasuredWidth() * (i == 0 ? 0.75f : 0.25f)); 1173 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1174 cl.setOverscrollTransformsDirty(true); 1175 } else if (mOverScrollPageIndex != i) { 1176 cl.setBackgroundAlphaMultiplier( 1177 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1178 } 1179 } 1180 cl.setTranslationX(translationX); 1181 cl.setRotationY(rotation); 1182 if (mFadeInAdjacentScreens && !isSmall()) { 1183 float alpha = 1 - Math.abs(scrollProgress); 1184 cl.setAlpha(alpha); 1185 } 1186 } 1187 } 1188 if (!isSwitchingState() && !isInOverscroll) { 1189 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1190 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1191 } 1192 invalidate(); 1193 } 1194 1195 private void screenScrolledStandardUI(int screenCenter) { 1196 if (mOverScrollX < 0 || mOverScrollX > mMaxScrollX) { 1197 int index = mOverScrollX < 0 ? 0 : getChildCount() - 1; 1198 CellLayout cl = (CellLayout) getChildAt(index); 1199 float scrollProgress = getScrollProgress(screenCenter, cl, index); 1200 cl.setOverScrollAmount(Math.abs(scrollProgress), index == 0); 1201 float rotation = - WORKSPACE_OVERSCROLL_ROTATION * scrollProgress; 1202 cl.setCameraDistance(mDensity * CAMERA_DISTANCE); 1203 cl.setPivotX(cl.getMeasuredWidth() * (index == 0 ? 0.75f : 0.25f)); 1204 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1205 cl.setRotationY(rotation); 1206 cl.setOverscrollTransformsDirty(true); 1207 setFadeForOverScroll(Math.abs(scrollProgress)); 1208 } else { 1209 if (mOverscrollFade != 0) { 1210 setFadeForOverScroll(0); 1211 } 1212 // We don't want to mess with the translations during transitions 1213 if (!isSwitchingState()) { 1214 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1215 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1216 } 1217 } 1218 } 1219 1220 @Override 1221 protected void screenScrolled(int screenCenter) { 1222 if (LauncherApplication.isScreenLarge()) { 1223 // We don't call super.screenScrolled() here because we handle the adjacent pages alpha 1224 // ourselves (for efficiency), and there are no scrolling indicators to update. 1225 screenScrolledLargeUI(screenCenter); 1226 } else { 1227 super.screenScrolled(screenCenter); 1228 screenScrolledStandardUI(screenCenter); 1229 } 1230 } 1231 1232 @Override 1233 protected void overScroll(float amount) { 1234 if (LauncherApplication.isScreenLarge()) { 1235 dampedOverScroll(amount); 1236 } else { 1237 acceleratedOverScroll(amount); 1238 } 1239 } 1240 1241 protected void onAttachedToWindow() { 1242 super.onAttachedToWindow(); 1243 mWindowToken = getWindowToken(); 1244 computeScroll(); 1245 mDragController.setWindowToken(mWindowToken); 1246 } 1247 1248 protected void onDetachedFromWindow() { 1249 mWindowToken = null; 1250 } 1251 1252 @Override 1253 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1254 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1255 mUpdateWallpaperOffsetImmediately = true; 1256 } 1257 super.onLayout(changed, left, top, right, bottom); 1258 } 1259 1260 @Override 1261 protected void onDraw(Canvas canvas) { 1262 updateWallpaperOffsets(); 1263 1264 // Draw the background gradient if necessary 1265 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1266 int alpha = (int) (mBackgroundAlpha * 255); 1267 mBackground.setAlpha(alpha); 1268 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1269 getMeasuredHeight()); 1270 mBackground.draw(canvas); 1271 } 1272 1273 super.onDraw(canvas); 1274 } 1275 1276 boolean isDrawingBackgroundGradient() { 1277 return (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground); 1278 } 1279 1280 @Override 1281 protected void dispatchDraw(Canvas canvas) { 1282 super.dispatchDraw(canvas); 1283 1284 if (mInScrollArea && !LauncherApplication.isScreenLarge()) { 1285 final int width = getWidth(); 1286 final int height = getHeight(); 1287 final int pageHeight = getChildAt(0).getHeight(); 1288 1289 // Set the height of the outline to be the height of the page 1290 final int offset = (height - pageHeight - mPaddingTop - mPaddingBottom) / 2; 1291 final int paddingTop = mPaddingTop + offset; 1292 final int paddingBottom = mPaddingBottom + offset; 1293 1294 final int page = (mNextPage != INVALID_PAGE ? mNextPage : mCurrentPage); 1295 final CellLayout leftPage = (CellLayout) getChildAt(page - 1); 1296 final CellLayout rightPage = (CellLayout) getChildAt(page + 1); 1297 1298 if (leftPage != null && leftPage.getIsDragOverlapping()) { 1299 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left_holo); 1300 d.setBounds(mScrollX, paddingTop, mScrollX + d.getIntrinsicWidth(), 1301 height - paddingBottom); 1302 d.draw(canvas); 1303 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 1304 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right_holo); 1305 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), paddingTop, mScrollX + width, 1306 height - paddingBottom); 1307 d.draw(canvas); 1308 } 1309 } 1310 } 1311 1312 @Override 1313 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1314 if (!mLauncher.isAllAppsVisible()) { 1315 final Folder openFolder = getOpenFolder(); 1316 if (openFolder != null) { 1317 return openFolder.requestFocus(direction, previouslyFocusedRect); 1318 } else { 1319 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1320 } 1321 } 1322 return false; 1323 } 1324 1325 @Override 1326 public int getDescendantFocusability() { 1327 if (isSmall()) { 1328 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1329 } 1330 return super.getDescendantFocusability(); 1331 } 1332 1333 @Override 1334 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1335 if (!mLauncher.isAllAppsVisible()) { 1336 final Folder openFolder = getOpenFolder(); 1337 if (openFolder != null) { 1338 openFolder.addFocusables(views, direction); 1339 } else { 1340 super.addFocusables(views, direction, focusableMode); 1341 } 1342 } 1343 } 1344 1345 public boolean isSmall() { 1346 return mState == State.SMALL || mState == State.SPRING_LOADED; 1347 } 1348 1349 void enableChildrenCache(int fromPage, int toPage) { 1350 if (fromPage > toPage) { 1351 final int temp = fromPage; 1352 fromPage = toPage; 1353 toPage = temp; 1354 } 1355 1356 final int screenCount = getChildCount(); 1357 1358 fromPage = Math.max(fromPage, 0); 1359 toPage = Math.min(toPage, screenCount - 1); 1360 1361 for (int i = fromPage; i <= toPage; i++) { 1362 final CellLayout layout = (CellLayout) getChildAt(i); 1363 layout.setChildrenDrawnWithCacheEnabled(true); 1364 layout.setChildrenDrawingCacheEnabled(true); 1365 } 1366 } 1367 1368 void clearChildrenCache() { 1369 final int screenCount = getChildCount(); 1370 for (int i = 0; i < screenCount; i++) { 1371 final CellLayout layout = (CellLayout) getChildAt(i); 1372 layout.setChildrenDrawnWithCacheEnabled(false); 1373 // In software mode, we don't want the items to continue to be drawn into bitmaps 1374 if (!isHardwareAccelerated()) { 1375 layout.setChildrenDrawingCacheEnabled(false); 1376 } 1377 } 1378 } 1379 1380 private void updateChildrenLayersEnabled() { 1381 boolean small = isSmall() || mIsSwitchingState; 1382 boolean dragging = mAnimatingViewIntoPlace || mIsDragOccuring; 1383 boolean enableChildrenLayers = small || dragging || isPageMoving(); 1384 1385 if (enableChildrenLayers != mChildrenLayersEnabled) { 1386 mChildrenLayersEnabled = enableChildrenLayers; 1387 for (int i = 0; i < getPageCount(); i++) { 1388 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(mChildrenLayersEnabled); 1389 } 1390 } 1391 } 1392 1393 protected void onWallpaperTap(MotionEvent ev) { 1394 final int[] position = mTempCell; 1395 getLocationOnScreen(position); 1396 1397 int pointerIndex = ev.getActionIndex(); 1398 position[0] += (int) ev.getX(pointerIndex); 1399 position[1] += (int) ev.getY(pointerIndex); 1400 1401 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1402 ev.getAction() == MotionEvent.ACTION_UP 1403 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1404 position[0], position[1], 0, null); 1405 } 1406 1407 /* 1408 * This interpolator emulates the rate at which the perceived scale of an object changes 1409 * as its distance from a camera increases. When this interpolator is applied to a scale 1410 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1411 * from the camera. 1412 */ 1413 static class ZInterpolator implements TimeInterpolator { 1414 private float focalLength; 1415 1416 public ZInterpolator(float foc) { 1417 focalLength = foc; 1418 } 1419 1420 public float getInterpolation(float input) { 1421 return (1.0f - focalLength / (focalLength + input)) / 1422 (1.0f - focalLength / (focalLength + 1.0f)); 1423 } 1424 } 1425 1426 /* 1427 * The exact reverse of ZInterpolator. 1428 */ 1429 static class InverseZInterpolator implements TimeInterpolator { 1430 private ZInterpolator zInterpolator; 1431 public InverseZInterpolator(float foc) { 1432 zInterpolator = new ZInterpolator(foc); 1433 } 1434 public float getInterpolation(float input) { 1435 return 1 - zInterpolator.getInterpolation(1 - input); 1436 } 1437 } 1438 1439 /* 1440 * ZInterpolator compounded with an ease-out. 1441 */ 1442 static class ZoomOutInterpolator implements TimeInterpolator { 1443 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(0.75f); 1444 private final ZInterpolator zInterpolator = new ZInterpolator(0.13f); 1445 1446 public float getInterpolation(float input) { 1447 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1448 } 1449 } 1450 1451 /* 1452 * InvereZInterpolator compounded with an ease-out. 1453 */ 1454 static class ZoomInInterpolator implements TimeInterpolator { 1455 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1456 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1457 1458 public float getInterpolation(float input) { 1459 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1460 } 1461 } 1462 1463 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1464 1465 /* 1466 * 1467 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1468 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1469 * 1470 * These methods mark the appropriate pages as accepting drops (which alters their visual 1471 * appearance). 1472 * 1473 */ 1474 public void onDragStartedWithItem(View v) { 1475 final Canvas canvas = new Canvas(); 1476 1477 // We need to add extra padding to the bitmap to make room for the glow effect 1478 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1479 1480 // The outline is used to visualize where the item will land if dropped 1481 mDragOutline = createDragOutline(v, canvas, bitmapPadding); 1482 } 1483 1484 public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, Paint alphaClipPaint) { 1485 final Canvas canvas = new Canvas(); 1486 1487 // We need to add extra padding to the bitmap to make room for the glow effect 1488 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1489 1490 int[] size = estimateItemSize(info.spanX, info.spanY, info, false); 1491 1492 // The outline is used to visualize where the item will land if dropped 1493 mDragOutline = createDragOutline(b, canvas, bitmapPadding, size[0], size[1], alphaClipPaint); 1494 } 1495 1496 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1497 // never dragged over 1498 public void onDragStopped(boolean success) { 1499 // In the success case, DragController has already called onDragExit() 1500 if (!success) { 1501 doDragExit(null); 1502 } 1503 } 1504 1505 public void exitWidgetResizeMode() { 1506 DragLayer dragLayer = mLauncher.getDragLayer(); 1507 dragLayer.clearAllResizeFrames(); 1508 } 1509 1510 private void initAnimationArrays() { 1511 final int childCount = getChildCount(); 1512 if (mOldTranslationXs != null) return; 1513 mOldTranslationXs = new float[childCount]; 1514 mOldTranslationYs = new float[childCount]; 1515 mOldScaleXs = new float[childCount]; 1516 mOldScaleYs = new float[childCount]; 1517 mOldBackgroundAlphas = new float[childCount]; 1518 mOldBackgroundAlphaMultipliers = new float[childCount]; 1519 mOldAlphas = new float[childCount]; 1520 mOldRotationYs = new float[childCount]; 1521 mNewTranslationXs = new float[childCount]; 1522 mNewTranslationYs = new float[childCount]; 1523 mNewScaleXs = new float[childCount]; 1524 mNewScaleYs = new float[childCount]; 1525 mNewBackgroundAlphas = new float[childCount]; 1526 mNewBackgroundAlphaMultipliers = new float[childCount]; 1527 mNewAlphas = new float[childCount]; 1528 mNewRotationYs = new float[childCount]; 1529 } 1530 1531 Animator getChangeStateAnimation(final State state, boolean animated) { 1532 return getChangeStateAnimation(state, animated, 0); 1533 } 1534 1535 Animator getChangeStateAnimation(final State state, boolean animated, int delay) { 1536 if (mState == state) { 1537 return null; 1538 } 1539 1540 // Initialize animation arrays for the first time if necessary 1541 initAnimationArrays(); 1542 1543 AnimatorSet anim = animated ? new AnimatorSet() : null; 1544 1545 // Stop any scrolling, move to the current page right away 1546 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1547 1548 final State oldState = mState; 1549 final boolean oldStateIsNormal = (oldState == State.NORMAL); 1550 final boolean oldStateIsSmall = (oldState == State.SMALL); 1551 mState = state; 1552 final boolean stateIsNormal = (state == State.NORMAL); 1553 final boolean stateIsSpringLoaded = (state == State.SPRING_LOADED); 1554 final boolean stateIsSmall = (state == State.SMALL); 1555 float finalScaleFactor = 1.0f; 1556 float finalBackgroundAlpha = stateIsSpringLoaded ? 1.0f : 0f; 1557 float translationX = 0; 1558 float translationY = 0; 1559 boolean zoomIn = true; 1560 1561 if (state != State.NORMAL) { 1562 finalScaleFactor = mSpringLoadedShrinkFactor - (stateIsSmall ? 0.1f : 0); 1563 if (oldStateIsNormal && stateIsSmall) { 1564 zoomIn = false; 1565 setLayoutScale(finalScaleFactor); 1566 updateChildrenLayersEnabled(); 1567 } else { 1568 finalBackgroundAlpha = 1.0f; 1569 setLayoutScale(finalScaleFactor); 1570 } 1571 } else { 1572 setLayoutScale(1.0f); 1573 } 1574 1575 final int duration = zoomIn ? 1576 getResources().getInteger(R.integer.config_workspaceUnshrinkTime) : 1577 getResources().getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1578 for (int i = 0; i < getChildCount(); i++) { 1579 final CellLayout cl = (CellLayout) getChildAt(i); 1580 float rotation = 0f; 1581 float initialAlpha = cl.getAlpha(); 1582 float finalAlphaMultiplierValue = 1f; 1583 float finalAlpha = (!mFadeInAdjacentScreens || stateIsSpringLoaded || 1584 (i == mCurrentPage)) ? 1f : 0f; 1585 1586 // Determine the pages alpha during the state transition 1587 if ((oldStateIsSmall && stateIsNormal) || 1588 (oldStateIsNormal && stateIsSmall)) { 1589 // To/from workspace - only show the current page unless the transition is not 1590 // animated and the animation end callback below doesn't run 1591 if (i == mCurrentPage || !animated) { 1592 finalAlpha = 1f; 1593 finalAlphaMultiplierValue = 0f; 1594 } else { 1595 initialAlpha = 0f; 1596 finalAlpha = 0f; 1597 } 1598 } 1599 1600 // Update the rotation of the screen (don't apply rotation on Phone UI) 1601 if (LauncherApplication.isScreenLarge()) { 1602 if (i < mCurrentPage) { 1603 rotation = WORKSPACE_ROTATION; 1604 } else if (i > mCurrentPage) { 1605 rotation = -WORKSPACE_ROTATION; 1606 } 1607 } 1608 1609 // If the screen is not xlarge, then don't rotate the CellLayouts 1610 // NOTE: If we don't update the side pages alpha, then we should not hide the side 1611 // pages. see unshrink(). 1612 if (LauncherApplication.isScreenLarge()) { 1613 translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1614 } 1615 1616 mOldAlphas[i] = initialAlpha; 1617 mNewAlphas[i] = finalAlpha; 1618 if (animated) { 1619 mOldTranslationXs[i] = cl.getTranslationX(); 1620 mOldTranslationYs[i] = cl.getTranslationY(); 1621 mOldScaleXs[i] = cl.getScaleX(); 1622 mOldScaleYs[i] = cl.getScaleY(); 1623 mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1624 mOldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1625 mOldRotationYs[i] = cl.getRotationY(); 1626 1627 mNewTranslationXs[i] = translationX; 1628 mNewTranslationYs[i] = translationY; 1629 mNewScaleXs[i] = finalScaleFactor; 1630 mNewScaleYs[i] = finalScaleFactor; 1631 mNewBackgroundAlphas[i] = finalBackgroundAlpha; 1632 mNewBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1633 mNewRotationYs[i] = rotation; 1634 } else { 1635 cl.setTranslationX(translationX); 1636 cl.setTranslationY(translationY); 1637 cl.setScaleX(finalScaleFactor); 1638 cl.setScaleY(finalScaleFactor); 1639 cl.setBackgroundAlpha(finalBackgroundAlpha); 1640 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1641 cl.setAlpha(finalAlpha); 1642 cl.setRotationY(rotation); 1643 } 1644 } 1645 1646 if (animated) { 1647 for (int index = 0; index < getChildCount(); index++) { 1648 final int i = index; 1649 final CellLayout cl = (CellLayout) getChildAt(i); 1650 if (mOldAlphas[i] == 0 && mNewAlphas[i] == 0) { 1651 cl.setTranslationX(mNewTranslationXs[i]); 1652 cl.setTranslationY(mNewTranslationYs[i]); 1653 cl.setScaleX(mNewScaleXs[i]); 1654 cl.setScaleY(mNewScaleYs[i]); 1655 cl.setBackgroundAlpha(mNewBackgroundAlphas[i]); 1656 cl.setBackgroundAlphaMultiplier(mNewBackgroundAlphaMultipliers[i]); 1657 cl.setAlpha(mNewAlphas[i]); 1658 cl.setRotationY(mNewRotationYs[i]); 1659 } else { 1660 LauncherViewPropertyAnimator a = new LauncherViewPropertyAnimator(cl); 1661 a.translationX(mNewTranslationXs[i]) 1662 .translationY(mNewTranslationYs[i]) 1663 .scaleX(mNewScaleXs[i]) 1664 .scaleY(mNewScaleYs[i]) 1665 .setDuration(duration) 1666 .setInterpolator(mZoomInInterpolator); 1667 if (mOldAlphas[i] != mNewAlphas[i]) { 1668 a.alpha(mNewAlphas[i]); 1669 } 1670 anim.play(a); 1671 if (mOldRotationYs[i] != 0 || mNewRotationYs[i] != 0) { 1672 ValueAnimator rotate = ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1673 rotate.setInterpolator(new DecelerateInterpolator(2.0f)); 1674 rotate.addUpdateListener(new LauncherAnimatorUpdateListener() { 1675 public void onAnimationUpdate(float a, float b) { 1676 cl.setRotationY(a * mOldRotationYs[i] + b * mNewRotationYs[i]); 1677 } 1678 }); 1679 anim.play(rotate); 1680 } 1681 if (mOldBackgroundAlphas[i] != 0 || 1682 mNewBackgroundAlphas[i] != 0 || 1683 mOldBackgroundAlphaMultipliers[i] != 0 || 1684 mNewBackgroundAlphaMultipliers[i] != 0) { 1685 ValueAnimator bgAnim = ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1686 bgAnim.setInterpolator(mZoomInInterpolator); 1687 bgAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1688 public void onAnimationUpdate(float a, float b) { 1689 cl.setBackgroundAlpha( 1690 a * mOldBackgroundAlphas[i] + 1691 b * mNewBackgroundAlphas[i]); 1692 cl.setBackgroundAlphaMultiplier( 1693 a * mOldBackgroundAlphaMultipliers[i] + 1694 b * mNewBackgroundAlphaMultipliers[i]); 1695 } 1696 }); 1697 anim.play(bgAnim); 1698 } 1699 } 1700 } 1701 anim.setStartDelay(delay); 1702 } 1703 1704 if (stateIsSpringLoaded) { 1705 // Right now we're covered by Apps Customize 1706 // Show the background gradient immediately, so the gradient will 1707 // be showing once AppsCustomize disappears 1708 animateBackgroundGradient(getResources().getInteger( 1709 R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, false); 1710 } else { 1711 // Fade the background gradient away 1712 animateBackgroundGradient(0f, true); 1713 } 1714 return anim; 1715 } 1716 1717 @Override 1718 public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) { 1719 mIsSwitchingState = true; 1720 } 1721 1722 @Override 1723 public void onLauncherTransitionStep(Launcher l, float t) { 1724 mTransitionProgress = t; 1725 } 1726 1727 @Override 1728 public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) { 1729 mIsSwitchingState = false; 1730 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 1731 updateChildrenLayersEnabled(); 1732 // The code in getChangeStateAnimation to determine initialAlpha and finalAlpha will ensure 1733 // ensure that only the current page is visible during (and subsequently, after) the 1734 // transition animation. If fade adjacent pages is disabled, then re-enable the page 1735 // visibility after the transition animation. 1736 if (!mFadeInAdjacentScreens) { 1737 for (int i = 0; i < getChildCount(); i++) { 1738 final CellLayout cl = (CellLayout) getChildAt(i); 1739 cl.setAlpha(1f); 1740 } 1741 } 1742 } 1743 1744 @Override 1745 public View getContent() { 1746 return this; 1747 } 1748 1749 /** 1750 * Draw the View v into the given Canvas. 1751 * 1752 * @param v the view to draw 1753 * @param destCanvas the canvas to draw on 1754 * @param padding the horizontal and vertical padding to use when drawing 1755 */ 1756 private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { 1757 final Rect clipRect = mTempRect; 1758 v.getDrawingRect(clipRect); 1759 1760 boolean textVisible = false; 1761 1762 destCanvas.save(); 1763 if (v instanceof TextView && pruneToDrawable) { 1764 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1765 clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); 1766 destCanvas.translate(padding / 2, padding / 2); 1767 d.draw(destCanvas); 1768 } else { 1769 if (v instanceof FolderIcon) { 1770 // For FolderIcons the text can bleed into the icon area, and so we need to 1771 // hide the text completely (which can't be achieved by clipping). 1772 if (((FolderIcon) v).getTextVisible()) { 1773 ((FolderIcon) v).setTextVisible(false); 1774 textVisible = true; 1775 } 1776 } else if (v instanceof BubbleTextView) { 1777 final BubbleTextView tv = (BubbleTextView) v; 1778 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1779 tv.getLayout().getLineTop(0); 1780 } else if (v instanceof TextView) { 1781 final TextView tv = (TextView) v; 1782 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1783 tv.getLayout().getLineTop(0); 1784 } 1785 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1786 destCanvas.clipRect(clipRect, Op.REPLACE); 1787 v.draw(destCanvas); 1788 1789 // Restore text visibility of FolderIcon if necessary 1790 if (textVisible) { 1791 ((FolderIcon) v).setTextVisible(true); 1792 } 1793 } 1794 destCanvas.restore(); 1795 } 1796 1797 /** 1798 * Returns a new bitmap to show when the given View is being dragged around. 1799 * Responsibility for the bitmap is transferred to the caller. 1800 */ 1801 public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1802 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1803 Bitmap b; 1804 1805 if (v instanceof TextView) { 1806 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1807 b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, 1808 d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); 1809 } else { 1810 b = Bitmap.createBitmap( 1811 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1812 } 1813 1814 canvas.setBitmap(b); 1815 drawDragView(v, canvas, padding, true); 1816 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 1817 canvas.setBitmap(null); 1818 1819 return b; 1820 } 1821 1822 /** 1823 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1824 * Responsibility for the bitmap is transferred to the caller. 1825 */ 1826 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1827 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1828 final Bitmap b = Bitmap.createBitmap( 1829 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1830 1831 canvas.setBitmap(b); 1832 drawDragView(v, canvas, padding, true); 1833 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1834 canvas.setBitmap(null); 1835 return b; 1836 } 1837 1838 /** 1839 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1840 * Responsibility for the bitmap is transferred to the caller. 1841 */ 1842 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h, 1843 Paint alphaClipPaint) { 1844 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1845 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1846 canvas.setBitmap(b); 1847 1848 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 1849 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 1850 (h - padding) / (float) orig.getHeight()); 1851 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 1852 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 1853 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 1854 1855 // center the image 1856 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 1857 1858 canvas.drawBitmap(orig, src, dst, null); 1859 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor, 1860 alphaClipPaint); 1861 canvas.setBitmap(null); 1862 1863 return b; 1864 } 1865 1866 /** 1867 * Creates a drag outline to represent a drop (that we don't have the actual information for 1868 * yet). May be changed in the future to alter the drop outline slightly depending on the 1869 * clip description mime data. 1870 */ 1871 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 1872 Resources r = getResources(); 1873 final int outlineColor = r.getColor(android.R.color.holo_blue_light); 1874 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 1875 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 1876 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 1877 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 1878 final Bitmap b = Bitmap.createBitmap( 1879 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 1880 1881 canvas.setBitmap(b); 1882 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 1883 rectRadius, rectRadius, mExternalDragOutlinePaint); 1884 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1885 canvas.setBitmap(null); 1886 return b; 1887 } 1888 1889 void startDrag(CellLayout.CellInfo cellInfo) { 1890 View child = cellInfo.cell; 1891 1892 // Make sure the drag was started by a long press as opposed to a long click. 1893 if (!child.isInTouchMode()) { 1894 return; 1895 } 1896 1897 mDragInfo = cellInfo; 1898 child.setVisibility(GONE); 1899 1900 child.clearFocus(); 1901 child.setPressed(false); 1902 1903 final Canvas canvas = new Canvas(); 1904 1905 // We need to add extra padding to the bitmap to make room for the glow effect 1906 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1907 1908 // The outline is used to visualize where the item will land if dropped 1909 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 1910 beginDragShared(child, this); 1911 } 1912 1913 public void beginDragShared(View child, DragSource source) { 1914 Resources r = getResources(); 1915 1916 // We need to add extra padding to the bitmap to make room for the glow effect 1917 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1918 1919 // The drag bitmap follows the touch point around on the screen 1920 final Bitmap b = createDragBitmap(child, new Canvas(), bitmapPadding); 1921 1922 final int bmpWidth = b.getWidth(); 1923 1924 mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 1925 final int dragLayerX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 1926 int dragLayerY = mTempXY[1] - bitmapPadding / 2; 1927 1928 Point dragVisualizeOffset = null; 1929 Rect dragRect = null; 1930 if (child instanceof BubbleTextView || child instanceof PagedViewIcon) { 1931 int iconSize = r.getDimensionPixelSize(R.dimen.app_icon_size); 1932 int iconPaddingTop = r.getDimensionPixelSize(R.dimen.app_icon_padding_top); 1933 int top = child.getPaddingTop(); 1934 int left = (bmpWidth - iconSize) / 2; 1935 int right = left + iconSize; 1936 int bottom = top + iconSize; 1937 dragLayerY += top; 1938 // Note: The drag region is used to calculate drag layer offsets, but the 1939 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 1940 dragVisualizeOffset = new Point(-bitmapPadding / 2, iconPaddingTop - bitmapPadding / 2); 1941 dragRect = new Rect(left, top, right, bottom); 1942 } else if (child instanceof FolderIcon) { 1943 int previewSize = r.getDimensionPixelSize(R.dimen.folder_preview_size); 1944 dragRect = new Rect(0, 0, child.getWidth(), previewSize); 1945 } 1946 1947 // Clear the pressed state if necessary 1948 if (child instanceof BubbleTextView) { 1949 BubbleTextView icon = (BubbleTextView) child; 1950 icon.clearPressedOrFocusedBackground(); 1951 } 1952 1953 mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 1954 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect); 1955 b.recycle(); 1956 1957 // Show the scrolling indicator when you pick up an item 1958 showScrollingIndicator(false); 1959 } 1960 1961 void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, int screen, 1962 int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { 1963 View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); 1964 1965 final int[] cellXY = new int[2]; 1966 target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1967 addInScreen(view, container, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1968 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, cellXY[0], 1969 cellXY[1]); 1970 } 1971 1972 public boolean transitionStateShouldAllowDrop() { 1973 return ((!isSwitchingState() || mTransitionProgress > 0.5f) && mState != State.SMALL); 1974 } 1975 1976 /** 1977 * {@inheritDoc} 1978 */ 1979 public boolean acceptDrop(DragObject d) { 1980 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1981 if (d.dragSource != this) { 1982 // Don't accept the drop if we're not over a screen at time of drop 1983 if (mDragTargetLayout == null) { 1984 return false; 1985 } 1986 if (!transitionStateShouldAllowDrop()) return false; 1987 1988 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 1989 d.dragView, mDragViewVisualCenter); 1990 1991 // We want the point to be mapped to the dragTarget. 1992 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 1993 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 1994 } else { 1995 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 1996 } 1997 1998 int spanX = 1; 1999 int spanY = 1; 2000 View ignoreView = null; 2001 if (mDragInfo != null) { 2002 final CellLayout.CellInfo dragCellInfo = mDragInfo; 2003 spanX = dragCellInfo.spanX; 2004 spanY = dragCellInfo.spanY; 2005 ignoreView = dragCellInfo.cell; 2006 } else { 2007 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 2008 spanX = dragInfo.spanX; 2009 spanY = dragInfo.spanY; 2010 } 2011 2012 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2013 (int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell); 2014 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, true)) { 2015 return true; 2016 } 2017 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, 2018 mTargetCell)) { 2019 return true; 2020 } 2021 2022 // Don't accept the drop if there's no room for the item 2023 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 2024 // Don't show the message if we are dropping on the AllApps button and the hotseat 2025 // is full 2026 if (mTargetCell != null && mLauncher.isHotseatLayout(mDragTargetLayout)) { 2027 Hotseat hotseat = mLauncher.getHotseat(); 2028 if (Hotseat.isAllAppsButtonRank( 2029 hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { 2030 return false; 2031 } 2032 } 2033 2034 mLauncher.showOutOfSpaceMessage(); 2035 return false; 2036 } 2037 } 2038 return true; 2039 } 2040 2041 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, 2042 boolean considerTimeout) { 2043 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2044 2045 boolean hasntMoved = false; 2046 if (mDragInfo != null) { 2047 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2048 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2049 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2050 } 2051 2052 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2053 return false; 2054 } 2055 2056 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2057 boolean willBecomeShortcut = 2058 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2059 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2060 2061 return (aboveShortcut && willBecomeShortcut); 2062 } 2063 2064 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell) { 2065 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2066 if (dropOverView instanceof FolderIcon) { 2067 FolderIcon fi = (FolderIcon) dropOverView; 2068 if (fi.acceptDrop(dragInfo)) { 2069 return true; 2070 } 2071 } 2072 return false; 2073 } 2074 2075 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2076 int[] targetCell, boolean external, DragView dragView, Runnable postAnimationRunnable) { 2077 View v = target.getChildAt(targetCell[0], targetCell[1]); 2078 boolean hasntMoved = false; 2079 if (mDragInfo != null) { 2080 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2081 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2082 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2083 } 2084 2085 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2086 mCreateUserFolderOnDrop = false; 2087 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 2088 2089 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2090 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2091 2092 if (aboveShortcut && willBecomeShortcut) { 2093 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2094 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2095 // if the drag started here, we need to remove it from the workspace 2096 if (!external) { 2097 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2098 } 2099 2100 Rect folderLocation = new Rect(); 2101 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2102 target.removeView(v); 2103 2104 FolderIcon fi = 2105 mLauncher.addFolder(target, container, screen, targetCell[0], targetCell[1]); 2106 destInfo.cellX = -1; 2107 destInfo.cellY = -1; 2108 sourceInfo.cellX = -1; 2109 sourceInfo.cellY = -1; 2110 2111 // If the dragView is null, we can't animate 2112 boolean animate = dragView != null; 2113 if (animate) { 2114 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2115 postAnimationRunnable); 2116 } else { 2117 fi.addItem(destInfo); 2118 fi.addItem(sourceInfo); 2119 } 2120 return true; 2121 } 2122 return false; 2123 } 2124 2125 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2126 DragObject d, boolean external) { 2127 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2128 if (dropOverView instanceof FolderIcon) { 2129 FolderIcon fi = (FolderIcon) dropOverView; 2130 if (fi.acceptDrop(d.dragInfo)) { 2131 fi.onDrop(d); 2132 2133 // if the drag started here, we need to remove it from the workspace 2134 if (!external) { 2135 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2136 } 2137 return true; 2138 } 2139 } 2140 return false; 2141 } 2142 2143 public void onDrop(DragObject d) { 2144 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2145 mDragViewVisualCenter); 2146 2147 // We want the point to be mapped to the dragTarget. 2148 if (mDragTargetLayout != null) { 2149 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2150 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2151 } else { 2152 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2153 } 2154 } 2155 2156 CellLayout dropTargetLayout = mDragTargetLayout; 2157 2158 int snapScreen = -1; 2159 if (d.dragSource != this) { 2160 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2161 (int) mDragViewVisualCenter[1] }; 2162 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2163 } else if (mDragInfo != null) { 2164 final View cell = mDragInfo.cell; 2165 2166 if (dropTargetLayout != null) { 2167 // Move internally 2168 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2169 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2170 long container = hasMovedIntoHotseat ? 2171 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2172 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2173 int screen = (mTargetCell[0] < 0) ? 2174 mDragInfo.screen : indexOfChild(dropTargetLayout); 2175 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2176 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2177 // First we find the cell nearest to point at which the item is 2178 // dropped, without any consideration to whether there is an item there. 2179 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2180 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2181 // If the item being dropped is a shortcut and the nearest drop 2182 // cell also contains a shortcut, then create a folder with the two shortcuts. 2183 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2184 dropTargetLayout, mTargetCell, false, d.dragView, null)) { 2185 return; 2186 } 2187 2188 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, d, false)) { 2189 return; 2190 } 2191 2192 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2193 // we need to find the nearest cell location that is vacant 2194 mTargetCell = findNearestVacantArea((int) mDragViewVisualCenter[0], 2195 (int) mDragViewVisualCenter[1], mDragInfo.spanX, mDragInfo.spanY, cell, 2196 dropTargetLayout, mTargetCell); 2197 2198 if (mCurrentPage != screen && !hasMovedIntoHotseat) { 2199 snapScreen = screen; 2200 snapToPage(screen); 2201 } 2202 2203 if (mTargetCell[0] >= 0 && mTargetCell[1] >= 0) { 2204 if (hasMovedLayouts) { 2205 // Reparent the view 2206 getParentCellLayoutForView(cell).removeView(cell); 2207 addInScreen(cell, container, screen, mTargetCell[0], mTargetCell[1], 2208 mDragInfo.spanX, mDragInfo.spanY); 2209 } 2210 2211 // update the item's position after drop 2212 final ItemInfo info = (ItemInfo) cell.getTag(); 2213 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2214 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 2215 lp.cellX = mTargetCell[0]; 2216 lp.cellY = mTargetCell[1]; 2217 cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screen, 2218 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2219 2220 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2221 cell instanceof LauncherAppWidgetHostView) { 2222 final CellLayout cellLayout = dropTargetLayout; 2223 // We post this call so that the widget has a chance to be placed 2224 // in its final location 2225 2226 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2227 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2228 if (pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2229 final Runnable resizeRunnable = new Runnable() { 2230 public void run() { 2231 DragLayer dragLayer = mLauncher.getDragLayer(); 2232 dragLayer.addResizeFrame(info, hostView, cellLayout); 2233 } 2234 }; 2235 post(new Runnable() { 2236 public void run() { 2237 if (!isPageMoving()) { 2238 resizeRunnable.run(); 2239 } else { 2240 mDelayedResizeRunnable = resizeRunnable; 2241 } 2242 } 2243 }); 2244 } 2245 } 2246 2247 LauncherModel.moveItemInDatabase(mLauncher, info, container, screen, lp.cellX, 2248 lp.cellY); 2249 } 2250 } 2251 2252 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2253 2254 // Prepare it to be animated into its new position 2255 // This must be called after the view has been re-parented 2256 final Runnable disableHardwareLayersRunnable = new Runnable() { 2257 @Override 2258 public void run() { 2259 mAnimatingViewIntoPlace = false; 2260 updateChildrenLayersEnabled(); 2261 } 2262 }; 2263 mAnimatingViewIntoPlace = true; 2264 if (d.dragView.hasDrawn()) { 2265 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2266 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2267 disableHardwareLayersRunnable, this); 2268 } else { 2269 d.deferDragViewCleanupPostAnimation = false; 2270 cell.setVisibility(VISIBLE); 2271 } 2272 parent.onDropChild(cell); 2273 } 2274 } 2275 2276 public void setFinalScrollForPageChange(int screen) { 2277 if (screen >= 0) { 2278 mSavedScrollX = getScrollX(); 2279 CellLayout cl = (CellLayout) getChildAt(screen); 2280 mSavedTranslationX = cl.getTranslationX(); 2281 mSavedRotationY = cl.getRotationY(); 2282 final int newX = getChildOffset(screen) - getRelativeChildOffset(screen); 2283 setScrollX(newX); 2284 cl.setTranslationX(0f); 2285 cl.setRotationY(0f); 2286 } 2287 } 2288 2289 public void resetFinalScrollForPageChange(int screen) { 2290 if (screen >= 0) { 2291 CellLayout cl = (CellLayout) getChildAt(screen); 2292 setScrollX(mSavedScrollX); 2293 cl.setTranslationX(mSavedTranslationX); 2294 cl.setRotationY(mSavedRotationY); 2295 } 2296 } 2297 2298 public void getViewLocationRelativeToSelf(View v, int[] location) { 2299 getLocationInWindow(location); 2300 int x = location[0]; 2301 int y = location[1]; 2302 2303 v.getLocationInWindow(location); 2304 int vX = location[0]; 2305 int vY = location[1]; 2306 2307 location[0] = vX - x; 2308 location[1] = vY - y; 2309 } 2310 2311 public void onDragEnter(DragObject d) { 2312 mDragHasEnteredWorkspace = true; 2313 if (mDragTargetLayout != null) { 2314 mDragTargetLayout.setIsDragOverlapping(false); 2315 mDragTargetLayout.onDragExit(); 2316 } 2317 mDragTargetLayout = getCurrentDropLayout(); 2318 mDragTargetLayout.setIsDragOverlapping(true); 2319 mDragTargetLayout.onDragEnter(); 2320 2321 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2322 // don't need to show the outlines 2323 if (LauncherApplication.isScreenLarge()) { 2324 showOutlines(); 2325 } 2326 } 2327 2328 private void doDragExit(DragObject d) { 2329 // Clean up folders 2330 cleanupFolderCreation(d); 2331 2332 // Reset the scroll area and previous drag target 2333 onResetScrollArea(); 2334 2335 if (mDragTargetLayout != null) { 2336 mDragTargetLayout.setIsDragOverlapping(false); 2337 mDragTargetLayout.onDragExit(); 2338 } 2339 mLastDragOverView = null; 2340 mSpringLoadedDragController.cancel(); 2341 2342 if (!mIsPageMoving) { 2343 hideOutlines(); 2344 } 2345 } 2346 2347 public void onDragExit(DragObject d) { 2348 mDragHasEnteredWorkspace = false; 2349 doDragExit(d); 2350 } 2351 2352 public DropTarget getDropTargetDelegate(DragObject d) { 2353 return null; 2354 } 2355 2356 /** 2357 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 2358 * in the returned structure related to the widgets that match the drop (or a null list if it is 2359 * a shortcut drop). If the drop is not accepted then a null structure is returned. 2360 */ 2361 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 2362 final LauncherModel model = mLauncher.getModel(); 2363 final ClipDescription desc = event.getClipDescription(); 2364 final int mimeTypeCount = desc.getMimeTypeCount(); 2365 for (int i = 0; i < mimeTypeCount; ++i) { 2366 final String mimeType = desc.getMimeType(i); 2367 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 2368 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 2369 } else { 2370 final List<WidgetMimeTypeHandlerData> widgets = 2371 model.resolveWidgetsForMimeType(mContext, mimeType); 2372 if (widgets.size() > 0) { 2373 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 2374 } 2375 } 2376 } 2377 return null; 2378 } 2379 2380 /** 2381 * Global drag and drop handler 2382 */ 2383 @Override 2384 public boolean onDragEvent(DragEvent event) { 2385 final ClipDescription desc = event.getClipDescription(); 2386 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 2387 final int[] pos = new int[2]; 2388 layout.getLocationOnScreen(pos); 2389 // We need to offset the drag coordinates to layout coordinate space 2390 final int x = (int) event.getX() - pos[0]; 2391 final int y = (int) event.getY() - pos[1]; 2392 2393 switch (event.getAction()) { 2394 case DragEvent.ACTION_DRAG_STARTED: { 2395 // Validate this drag 2396 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2397 if (test != null) { 2398 boolean isShortcut = (test.second == null); 2399 if (isShortcut) { 2400 // Check if we have enough space on this screen to add a new shortcut 2401 if (!layout.findCellForSpan(pos, 1, 1)) { 2402 mLauncher.showOutOfSpaceMessage(); 2403 return false; 2404 } 2405 } 2406 } else { 2407 // Show error message if we couldn't accept any of the items 2408 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 2409 Toast.LENGTH_SHORT).show(); 2410 return false; 2411 } 2412 2413 // Create the drag outline 2414 // We need to add extra padding to the bitmap to make room for the glow effect 2415 final Canvas canvas = new Canvas(); 2416 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2417 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 2418 2419 // Show the current page outlines to indicate that we can accept this drop 2420 showOutlines(); 2421 layout.onDragEnter(); 2422 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1, null, null); 2423 2424 return true; 2425 } 2426 case DragEvent.ACTION_DRAG_LOCATION: 2427 // Visualize the drop location 2428 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1, null, null); 2429 return true; 2430 case DragEvent.ACTION_DROP: { 2431 // Try and add any shortcuts 2432 final LauncherModel model = mLauncher.getModel(); 2433 final ClipData data = event.getClipData(); 2434 2435 // We assume that the mime types are ordered in descending importance of 2436 // representation. So we enumerate the list of mime types and alert the 2437 // user if any widgets can handle the drop. Only the most preferred 2438 // representation will be handled. 2439 pos[0] = x; 2440 pos[1] = y; 2441 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2442 if (test != null) { 2443 final int index = test.first; 2444 final List<WidgetMimeTypeHandlerData> widgets = test.second; 2445 final boolean isShortcut = (widgets == null); 2446 final String mimeType = desc.getMimeType(index); 2447 if (isShortcut) { 2448 final Intent intent = data.getItemAt(index).getIntent(); 2449 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 2450 if (info != null) { 2451 onDropExternal(new int[] { x, y }, info, layout, false); 2452 } 2453 } else { 2454 if (widgets.size() == 1) { 2455 // If there is only one item, then go ahead and add and configure 2456 // that widget 2457 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 2458 final PendingAddWidgetInfo createInfo = 2459 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 2460 mLauncher.addAppWidgetFromDrop(createInfo, 2461 LauncherSettings.Favorites.CONTAINER_DESKTOP, mCurrentPage, null, pos); 2462 } else { 2463 // Show the widget picker dialog if there is more than one widget 2464 // that can handle this data type 2465 final InstallWidgetReceiver.WidgetListAdapter adapter = 2466 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 2467 data, widgets, layout, mCurrentPage, pos); 2468 final AlertDialog.Builder builder = 2469 new AlertDialog.Builder(mContext); 2470 builder.setAdapter(adapter, adapter); 2471 builder.setCancelable(true); 2472 builder.setTitle(mContext.getString( 2473 R.string.external_drop_widget_pick_title)); 2474 builder.setIcon(R.drawable.ic_no_applications); 2475 builder.show(); 2476 } 2477 } 2478 } 2479 return true; 2480 } 2481 case DragEvent.ACTION_DRAG_ENDED: 2482 // Hide the page outlines after the drop 2483 layout.onDragExit(); 2484 hideOutlines(); 2485 return true; 2486 } 2487 return super.onDragEvent(event); 2488 } 2489 2490 /* 2491 * 2492 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2493 * coordinate space. The argument xy is modified with the return result. 2494 * 2495 */ 2496 void mapPointFromSelfToChild(View v, float[] xy) { 2497 mapPointFromSelfToChild(v, xy, null); 2498 } 2499 2500 /* 2501 * 2502 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2503 * coordinate space. The argument xy is modified with the return result. 2504 * 2505 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2506 * computing it itself; we use this to avoid redundant matrix inversions in 2507 * findMatchingPageForDragOver 2508 * 2509 */ 2510 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2511 if (cachedInverseMatrix == null) { 2512 v.getMatrix().invert(mTempInverseMatrix); 2513 cachedInverseMatrix = mTempInverseMatrix; 2514 } 2515 int scrollX = mScrollX; 2516 if (mNextPage != INVALID_PAGE) { 2517 scrollX = mScroller.getFinalX(); 2518 } 2519 xy[0] = xy[0] + scrollX - v.getLeft(); 2520 xy[1] = xy[1] + mScrollY - v.getTop(); 2521 cachedInverseMatrix.mapPoints(xy); 2522 } 2523 2524 /* 2525 * Maps a point from the Workspace's coordinate system to another sibling view's. (Workspace 2526 * covers the full screen) 2527 */ 2528 void mapPointFromSelfToSibling(View v, float[] xy) { 2529 xy[0] = xy[0] - v.getLeft(); 2530 xy[1] = xy[1] - v.getTop(); 2531 } 2532 2533 /* 2534 * 2535 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2536 * the parent View's coordinate space. The argument xy is modified with the return result. 2537 * 2538 */ 2539 void mapPointFromChildToSelf(View v, float[] xy) { 2540 v.getMatrix().mapPoints(xy); 2541 int scrollX = mScrollX; 2542 if (mNextPage != INVALID_PAGE) { 2543 scrollX = mScroller.getFinalX(); 2544 } 2545 xy[0] -= (scrollX - v.getLeft()); 2546 xy[1] -= (mScrollY - v.getTop()); 2547 } 2548 2549 static private float squaredDistance(float[] point1, float[] point2) { 2550 float distanceX = point1[0] - point2[0]; 2551 float distanceY = point2[1] - point2[1]; 2552 return distanceX * distanceX + distanceY * distanceY; 2553 } 2554 2555 /* 2556 * 2557 * Returns true if the passed CellLayout cl overlaps with dragView 2558 * 2559 */ 2560 boolean overlaps(CellLayout cl, DragView dragView, 2561 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2562 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2563 final float[] draggedItemTopLeft = mTempDragCoordinates; 2564 draggedItemTopLeft[0] = dragViewX; 2565 draggedItemTopLeft[1] = dragViewY; 2566 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2567 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2568 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2569 2570 // Transform the dragged item's top left coordinates 2571 // to the CellLayout's local coordinates 2572 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2573 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2574 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2575 2576 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2577 // Transform the dragged item's bottom right coordinates 2578 // to the CellLayout's local coordinates 2579 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2580 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2581 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2582 2583 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2584 float overlap = (overlapRegionRight - overlapRegionLeft) * 2585 (overlapRegionBottom - overlapRegionTop); 2586 if (overlap > 0) { 2587 return true; 2588 } 2589 } 2590 } 2591 return false; 2592 } 2593 2594 /* 2595 * 2596 * This method returns the CellLayout that is currently being dragged to. In order to drag 2597 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2598 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2599 * 2600 * Return null if no CellLayout is currently being dragged over 2601 * 2602 */ 2603 private CellLayout findMatchingPageForDragOver( 2604 DragView dragView, float originX, float originY, boolean exact) { 2605 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2606 // with the item being dragged and then choose the one that's closest to the touch point 2607 final int screenCount = getChildCount(); 2608 CellLayout bestMatchingScreen = null; 2609 float smallestDistSoFar = Float.MAX_VALUE; 2610 2611 for (int i = 0; i < screenCount; i++) { 2612 CellLayout cl = (CellLayout) getChildAt(i); 2613 2614 final float[] touchXy = {originX, originY}; 2615 // Transform the touch coordinates to the CellLayout's local coordinates 2616 // If the touch point is within the bounds of the cell layout, we can return immediately 2617 cl.getMatrix().invert(mTempInverseMatrix); 2618 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2619 2620 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2621 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2622 return cl; 2623 } 2624 2625 if (!exact) { 2626 // Get the center of the cell layout in screen coordinates 2627 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2628 cellLayoutCenter[0] = cl.getWidth()/2; 2629 cellLayoutCenter[1] = cl.getHeight()/2; 2630 mapPointFromChildToSelf(cl, cellLayoutCenter); 2631 2632 touchXy[0] = originX; 2633 touchXy[1] = originY; 2634 2635 // Calculate the distance between the center of the CellLayout 2636 // and the touch point 2637 float dist = squaredDistance(touchXy, cellLayoutCenter); 2638 2639 if (dist < smallestDistSoFar) { 2640 smallestDistSoFar = dist; 2641 bestMatchingScreen = cl; 2642 } 2643 } 2644 } 2645 return bestMatchingScreen; 2646 } 2647 2648 // This is used to compute the visual center of the dragView. This point is then 2649 // used to visualize drop locations and determine where to drop an item. The idea is that 2650 // the visual center represents the user's interpretation of where the item is, and hence 2651 // is the appropriate point to use when determining drop location. 2652 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2653 DragView dragView, float[] recycle) { 2654 float res[]; 2655 if (recycle == null) { 2656 res = new float[2]; 2657 } else { 2658 res = recycle; 2659 } 2660 2661 // First off, the drag view has been shifted in a way that is not represented in the 2662 // x and y values or the x/yOffsets. Here we account for that shift. 2663 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2664 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2665 2666 // These represent the visual top and left of drag view if a dragRect was provided. 2667 // If a dragRect was not provided, then they correspond to the actual view left and 2668 // top, as the dragRect is in that case taken to be the entire dragView. 2669 // R.dimen.dragViewOffsetY. 2670 int left = x - xOffset; 2671 int top = y - yOffset; 2672 2673 // In order to find the visual center, we shift by half the dragRect 2674 res[0] = left + dragView.getDragRegion().width() / 2; 2675 res[1] = top + dragView.getDragRegion().height() / 2; 2676 2677 return res; 2678 } 2679 2680 private boolean isDragWidget(DragObject d) { 2681 return (d.dragInfo instanceof LauncherAppWidgetInfo || 2682 d.dragInfo instanceof PendingAddWidgetInfo); 2683 } 2684 private boolean isExternalDragWidget(DragObject d) { 2685 return d.dragSource != this && isDragWidget(d); 2686 } 2687 2688 public void onDragOver(DragObject d) { 2689 // Skip drag over events while we are dragging over side pages 2690 if (mInScrollArea || mIsSwitchingState || mState == State.SMALL) return; 2691 2692 Rect r = new Rect(); 2693 CellLayout layout = null; 2694 ItemInfo item = (ItemInfo) d.dragInfo; 2695 2696 // Ensure that we have proper spans for the item that we are dropping 2697 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2698 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2699 d.dragView, mDragViewVisualCenter); 2700 2701 // Identify whether we have dragged over a side page 2702 if (isSmall()) { 2703 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 2704 mLauncher.getHotseat().getHitRect(r); 2705 if (r.contains(d.x, d.y)) { 2706 layout = mLauncher.getHotseat().getLayout(); 2707 } 2708 } 2709 if (layout == null) { 2710 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false); 2711 } 2712 if (layout != mDragTargetLayout) { 2713 // Cancel all intermediate folder states 2714 cleanupFolderCreation(d); 2715 2716 if (mDragTargetLayout != null) { 2717 mDragTargetLayout.setIsDragOverlapping(false); 2718 mDragTargetLayout.onDragExit(); 2719 } 2720 mDragTargetLayout = layout; 2721 if (mDragTargetLayout != null) { 2722 mDragTargetLayout.setIsDragOverlapping(true); 2723 mDragTargetLayout.onDragEnter(); 2724 } else { 2725 mLastDragOverView = null; 2726 } 2727 2728 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 2729 if (isInSpringLoadedMode) { 2730 if (mLauncher.isHotseatLayout(layout)) { 2731 mSpringLoadedDragController.cancel(); 2732 } else { 2733 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2734 } 2735 } 2736 } 2737 } else { 2738 // Test to see if we are over the hotseat otherwise just use the current page 2739 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 2740 mLauncher.getHotseat().getHitRect(r); 2741 if (r.contains(d.x, d.y)) { 2742 layout = mLauncher.getHotseat().getLayout(); 2743 } 2744 } 2745 if (layout == null) { 2746 layout = getCurrentDropLayout(); 2747 } 2748 if (layout != mDragTargetLayout) { 2749 if (mDragTargetLayout != null) { 2750 mDragTargetLayout.setIsDragOverlapping(false); 2751 mDragTargetLayout.onDragExit(); 2752 } 2753 mDragTargetLayout = layout; 2754 mDragTargetLayout.setIsDragOverlapping(true); 2755 mDragTargetLayout.onDragEnter(); 2756 } 2757 } 2758 2759 // Handle the drag over 2760 if (mDragTargetLayout != null) { 2761 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2762 2763 // We want the point to be mapped to the dragTarget. 2764 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2765 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2766 } else { 2767 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2768 } 2769 ItemInfo info = (ItemInfo) d.dragInfo; 2770 2771 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2772 (int) mDragViewVisualCenter[1], 1, 1, mDragTargetLayout, mTargetCell); 2773 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2774 mTargetCell[1]); 2775 2776 boolean userFolderPending = willCreateUserFolder(info, mDragTargetLayout, 2777 mTargetCell, false); 2778 boolean isOverFolder = dragOverView instanceof FolderIcon; 2779 if (dragOverView != mLastDragOverView) { 2780 cancelFolderCreation(); 2781 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2782 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2783 } 2784 } 2785 2786 if (userFolderPending && dragOverView != mLastDragOverView) { 2787 mFolderCreationAlarm.setOnAlarmListener(new 2788 FolderCreationAlarmListener(mDragTargetLayout, mTargetCell[0], mTargetCell[1])); 2789 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2790 } 2791 2792 if (dragOverView != mLastDragOverView && isOverFolder) { 2793 ((FolderIcon) dragOverView).onDragEnter(d.dragInfo); 2794 if (mDragTargetLayout != null) { 2795 mDragTargetLayout.clearDragOutlines(); 2796 } 2797 } 2798 mLastDragOverView = dragOverView; 2799 2800 if (!mCreateUserFolderOnDrop && !isOverFolder) { 2801 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2802 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2803 item.spanX, item.spanY, d.dragView.getDragVisualizeOffset(), 2804 d.dragView.getDragRegion()); 2805 } 2806 } 2807 } 2808 2809 private void cleanupFolderCreation(DragObject d) { 2810 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2811 mDragFolderRingAnimator.animateToNaturalState(); 2812 } 2813 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2814 if (d != null) { 2815 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2816 } 2817 } 2818 mFolderCreationAlarm.cancelAlarm(); 2819 } 2820 2821 private void cancelFolderCreation() { 2822 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2823 mDragFolderRingAnimator.animateToNaturalState(); 2824 } 2825 mCreateUserFolderOnDrop = false; 2826 mFolderCreationAlarm.cancelAlarm(); 2827 } 2828 2829 class FolderCreationAlarmListener implements OnAlarmListener { 2830 CellLayout layout; 2831 int cellX; 2832 int cellY; 2833 2834 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 2835 this.layout = layout; 2836 this.cellX = cellX; 2837 this.cellY = cellY; 2838 } 2839 2840 public void onAlarm(Alarm alarm) { 2841 if (mDragFolderRingAnimator == null) { 2842 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 2843 } 2844 mDragFolderRingAnimator.setCell(cellX, cellY); 2845 mDragFolderRingAnimator.setCellLayout(layout); 2846 mDragFolderRingAnimator.animateToAcceptState(); 2847 layout.showFolderAccept(mDragFolderRingAnimator); 2848 layout.clearDragOutlines(); 2849 mCreateUserFolderOnDrop = true; 2850 } 2851 } 2852 2853 @Override 2854 public void getHitRect(Rect outRect) { 2855 // We want the workspace to have the whole area of the display (it will find the correct 2856 // cell layout to drop to in the existing drag/drop logic. 2857 outRect.set(0, 0, mDisplayWidth, mDisplayHeight); 2858 } 2859 2860 /** 2861 * Add the item specified by dragInfo to the given layout. 2862 * @return true if successful 2863 */ 2864 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2865 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2866 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2867 return true; 2868 } 2869 mLauncher.showOutOfSpaceMessage(); 2870 return false; 2871 } 2872 2873 private void onDropExternal(int[] touchXY, Object dragInfo, 2874 CellLayout cellLayout, boolean insertAtFirst) { 2875 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 2876 } 2877 2878 /** 2879 * Drop an item that didn't originate on one of the workspace screens. 2880 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2881 * come from another app altogether. 2882 * 2883 * NOTE: This can also be called when we are outside of a drag event, when we want 2884 * to add an item to one of the workspace screens. 2885 */ 2886 private void onDropExternal(final int[] touchXY, final Object dragInfo, 2887 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 2888 final Runnable exitSpringLoadedRunnable = new Runnable() { 2889 @Override 2890 public void run() { 2891 mLauncher.exitSpringLoadedDragModeDelayed(true, false, null); 2892 } 2893 }; 2894 2895 ItemInfo info = (ItemInfo) dragInfo; 2896 int spanX = info.spanX; 2897 int spanY = info.spanY; 2898 if (mDragInfo != null) { 2899 spanX = mDragInfo.spanX; 2900 spanY = mDragInfo.spanY; 2901 } 2902 2903 final long container = mLauncher.isHotseatLayout(cellLayout) ? 2904 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2905 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2906 final int screen = indexOfChild(cellLayout); 2907 if (!mLauncher.isHotseatLayout(cellLayout) && screen != mCurrentPage 2908 && mState != State.SPRING_LOADED) { 2909 snapToPage(screen); 2910 } 2911 2912 if (info instanceof PendingAddItemInfo) { 2913 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 2914 2915 boolean findNearestVacantCell = true; 2916 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 2917 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 2918 cellLayout, mTargetCell); 2919 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, 2920 true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 2921 mDragTargetLayout, mTargetCell)) { 2922 findNearestVacantCell = false; 2923 } 2924 } 2925 if (findNearestVacantCell) { 2926 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], spanX, spanY, null, 2927 cellLayout, mTargetCell); 2928 } 2929 2930 Runnable onAnimationCompleteRunnable = new Runnable() { 2931 @Override 2932 public void run() { 2933 // When dragging and dropping from customization tray, we deal with creating 2934 // widgets/shortcuts/folders in a slightly different way 2935 switch (pendingInfo.itemType) { 2936 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 2937 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, 2938 container, screen, mTargetCell, null); 2939 break; 2940 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2941 mLauncher.processShortcutFromDrop(pendingInfo.componentName, 2942 container, screen, mTargetCell, null); 2943 break; 2944 default: 2945 throw new IllegalStateException("Unknown item type: " + 2946 pendingInfo.itemType); 2947 } 2948 cellLayout.onDragExit(); 2949 } 2950 }; 2951 2952 animateExternalDrop((PendingAddItemInfo) info, cellLayout, d.dragView, 2953 onAnimationCompleteRunnable, ANIMATE_INTO_POSITION); 2954 } else { 2955 // This is for other drag/drop cases, like dragging from All Apps 2956 View view = null; 2957 2958 switch (info.itemType) { 2959 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 2960 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2961 if (info.container == NO_ID && info instanceof ApplicationInfo) { 2962 // Came from all apps -- make a copy 2963 info = new ShortcutInfo((ApplicationInfo) info); 2964 } 2965 view = mLauncher.createShortcut(R.layout.application, cellLayout, 2966 (ShortcutInfo) info); 2967 break; 2968 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 2969 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 2970 (FolderInfo) info, mIconCache); 2971 break; 2972 default: 2973 throw new IllegalStateException("Unknown item type: " + info.itemType); 2974 } 2975 2976 // First we find the cell nearest to point at which the item is 2977 // dropped, without any consideration to whether there is an item there. 2978 if (touchXY != null) { 2979 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 2980 cellLayout, mTargetCell); 2981 d.postAnimationRunnable = exitSpringLoadedRunnable; 2982 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, true, 2983 d.dragView, d.postAnimationRunnable)) { 2984 return; 2985 } 2986 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, d, true)) { 2987 return; 2988 } 2989 } 2990 2991 if (touchXY != null) { 2992 // when dragging and dropping, just find the closest free spot 2993 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], 1, 1, null, 2994 cellLayout, mTargetCell); 2995 } else { 2996 cellLayout.findCellForSpan(mTargetCell, 1, 1); 2997 } 2998 addInScreen(view, container, screen, mTargetCell[0], mTargetCell[1], info.spanX, 2999 info.spanY, insertAtFirst); 3000 cellLayout.onDropChild(view); 3001 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 3002 cellLayout.getChildrenLayout().measureChild(view); 3003 3004 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, 3005 lp.cellX, lp.cellY); 3006 3007 if (d.dragView != null) { 3008 // We wrap the animation call in the temporary set and reset of the current 3009 // cellLayout to its final transform -- this means we animate the drag view to 3010 // the correct final location. 3011 setFinalTransitionTransform(cellLayout); 3012 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 3013 exitSpringLoadedRunnable); 3014 resetTransitionTransform(cellLayout); 3015 } 3016 } 3017 } 3018 3019 public Bitmap createWidgetBitmap(PendingAddWidgetInfo widgetInfo) { 3020 int[] unScaledSize = mLauncher.getWorkspace().estimateItemSize(widgetInfo.spanX, 3021 widgetInfo.spanY, widgetInfo, false); 3022 View layout = widgetInfo.boundWidget; 3023 mLauncher.getDragLayer().removeView(layout); 3024 layout.setVisibility(VISIBLE); 3025 3026 int width = MeasureSpec.makeMeasureSpec(unScaledSize[0], MeasureSpec.EXACTLY); 3027 int height = MeasureSpec.makeMeasureSpec(unScaledSize[1], MeasureSpec.EXACTLY); 3028 Bitmap b = Bitmap.createBitmap(unScaledSize[0], unScaledSize[1], 3029 Bitmap.Config.ARGB_8888); 3030 Canvas c = new Canvas(b); 3031 3032 layout.measure(width, height); 3033 layout.layout(0, 0, unScaledSize[0], unScaledSize[1]); 3034 layout.draw(c); 3035 c.setBitmap(null); 3036 return b; 3037 } 3038 3039 public void animateExternalDrop(PendingAddItemInfo pendingInfo, CellLayout cellLayout, 3040 DragView dragView, Runnable onCompleteRunnable, int animationType) { 3041 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 3042 // location and size on the home screen. 3043 int spanX = pendingInfo.spanX; 3044 int spanY = pendingInfo.spanY; 3045 RectF r = estimateItemPosition(cellLayout, pendingInfo, 3046 mTargetCell[0], mTargetCell[1], spanX, spanY); 3047 int loc[] = new int[2]; 3048 loc[0] = (int) r.left; 3049 loc[1] = (int) r.top; 3050 setFinalTransitionTransform(cellLayout); 3051 float cellLayoutScale = 3052 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(cellLayout, loc); 3053 resetTransitionTransform(cellLayout); 3054 3055 float dragViewScaleX = r.width() / dragView.getMeasuredWidth(); 3056 float dragViewScaleY = r.height() / dragView.getMeasuredHeight(); 3057 // The animation will scale the dragView about its center, so we need to center about 3058 // the final location. 3059 loc[0] -= (dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 3060 loc[1] -= (dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 3061 3062 float scaleX = dragViewScaleX * cellLayoutScale; 3063 float scaleY = dragViewScaleY * cellLayoutScale; 3064 3065 Resources res = mLauncher.getResources(); 3066 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration) - 200; 3067 3068 int animationEnd = DragLayer.ANIMATION_END_REMAIN_VISIBLE; 3069 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && 3070 (((PendingAddWidgetInfo) pendingInfo).info.configure == null || 3071 animationType == COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION)) { 3072 Bitmap crossFadeBitmap = createWidgetBitmap((PendingAddWidgetInfo) pendingInfo); 3073 dragView.setCrossFadeBitmap(crossFadeBitmap); 3074 dragView.crossFade((int) (duration * 0.8f)); 3075 animationEnd = DragLayer.ANIMATION_END_DISAPPEAR; 3076 } else { 3077 scaleX = scaleY = Math.min(scaleX, scaleY); 3078 } 3079 3080 if (animationType == CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION) { 3081 mLauncher.getDragLayer().animateViewIntoPosition(dragView, loc, 0f, 0.1f, 0.1f, 3082 DragLayer.ANIMATION_END_DISAPPEAR, onCompleteRunnable, duration); 3083 } else { 3084 mLauncher.getDragLayer().animateViewIntoPosition(dragView, loc, 1f, scaleX, scaleY, 3085 animationEnd, onCompleteRunnable, duration); 3086 } 3087 } 3088 3089 public void setFinalTransitionTransform(CellLayout layout) { 3090 if (isSwitchingState()) { 3091 int index = indexOfChild(layout); 3092 mCurrentScaleX = layout.getScaleX(); 3093 mCurrentScaleY = layout.getScaleY(); 3094 mCurrentTranslationX = layout.getTranslationX(); 3095 mCurrentTranslationY = layout.getTranslationY(); 3096 mCurrentRotationY = layout.getRotationY(); 3097 layout.setScaleX(mNewScaleXs[index]); 3098 layout.setScaleY(mNewScaleYs[index]); 3099 layout.setTranslationX(mNewTranslationXs[index]); 3100 layout.setTranslationY(mNewTranslationYs[index]); 3101 layout.setRotationY(mNewRotationYs[index]); 3102 } 3103 } 3104 public void resetTransitionTransform(CellLayout layout) { 3105 if (isSwitchingState()) { 3106 mCurrentScaleX = layout.getScaleX(); 3107 mCurrentScaleY = layout.getScaleY(); 3108 mCurrentTranslationX = layout.getTranslationX(); 3109 mCurrentTranslationY = layout.getTranslationY(); 3110 mCurrentRotationY = layout.getRotationY(); 3111 layout.setScaleX(mCurrentScaleX); 3112 layout.setScaleY(mCurrentScaleY); 3113 layout.setTranslationX(mCurrentTranslationX); 3114 layout.setTranslationY(mCurrentTranslationY); 3115 layout.setRotationY(mCurrentRotationY); 3116 } 3117 } 3118 3119 /** 3120 * Return the current {@link CellLayout}, correctly picking the destination 3121 * screen while a scroll is in progress. 3122 */ 3123 public CellLayout getCurrentDropLayout() { 3124 return (CellLayout) getChildAt(mNextPage == INVALID_PAGE ? mCurrentPage : mNextPage); 3125 } 3126 3127 /** 3128 * Return the current CellInfo describing our current drag; this method exists 3129 * so that Launcher can sync this object with the correct info when the activity is created/ 3130 * destroyed 3131 * 3132 */ 3133 public CellLayout.CellInfo getDragInfo() { 3134 return mDragInfo; 3135 } 3136 3137 /** 3138 * Calculate the nearest cell where the given object would be dropped. 3139 * 3140 * pixelX and pixelY should be in the coordinate system of layout 3141 */ 3142 private int[] findNearestVacantArea(int pixelX, int pixelY, 3143 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 3144 return layout.findNearestVacantArea( 3145 pixelX, pixelY, spanX, spanY, ignoreView, recycle); 3146 } 3147 3148 /** 3149 * Calculate the nearest cell where the given object would be dropped. 3150 * 3151 * pixelX and pixelY should be in the coordinate system of layout 3152 */ 3153 private int[] findNearestArea(int pixelX, int pixelY, 3154 int spanX, int spanY, CellLayout layout, int[] recycle) { 3155 return layout.findNearestArea( 3156 pixelX, pixelY, spanX, spanY, recycle); 3157 } 3158 3159 void setup(DragController dragController) { 3160 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3161 mDragController = dragController; 3162 3163 // hardware layers on children are enabled on startup, but should be disabled until 3164 // needed 3165 updateChildrenLayersEnabled(); 3166 setWallpaperDimension(); 3167 } 3168 3169 /** 3170 * Called at the end of a drag which originated on the workspace. 3171 */ 3172 public void onDropCompleted(View target, DragObject d, boolean success) { 3173 if (success) { 3174 if (target != this) { 3175 if (mDragInfo != null) { 3176 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 3177 if (mDragInfo.cell instanceof DropTarget) { 3178 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 3179 } 3180 } 3181 } 3182 } else if (mDragInfo != null) { 3183 // NOTE: When 'success' is true, onDragExit is called by the DragController before 3184 // calling onDropCompleted(). We call it ourselves here, but maybe this should be 3185 // moved into DragController.cancelDrag(). 3186 doDragExit(null); 3187 CellLayout cellLayout; 3188 if (mLauncher.isHotseatLayout(target)) { 3189 cellLayout = mLauncher.getHotseat().getLayout(); 3190 } else { 3191 cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3192 } 3193 cellLayout.onDropChild(mDragInfo.cell); 3194 } 3195 if (d.cancelled && mDragInfo.cell != null) { 3196 mDragInfo.cell.setVisibility(VISIBLE); 3197 } 3198 mDragOutline = null; 3199 mDragInfo = null; 3200 3201 // Hide the scrolling indicator after you pick up an item 3202 hideScrollingIndicator(false); 3203 } 3204 3205 public boolean isDropEnabled() { 3206 return true; 3207 } 3208 3209 @Override 3210 protected void onRestoreInstanceState(Parcelable state) { 3211 super.onRestoreInstanceState(state); 3212 Launcher.setScreen(mCurrentPage); 3213 } 3214 3215 @Override 3216 public void scrollLeft() { 3217 if (!isSmall() && !mIsSwitchingState) { 3218 super.scrollLeft(); 3219 } 3220 Folder openFolder = getOpenFolder(); 3221 if (openFolder != null) { 3222 openFolder.completeDragExit(); 3223 } 3224 } 3225 3226 @Override 3227 public void scrollRight() { 3228 if (!isSmall() && !mIsSwitchingState) { 3229 super.scrollRight(); 3230 } 3231 Folder openFolder = getOpenFolder(); 3232 if (openFolder != null) { 3233 openFolder.completeDragExit(); 3234 } 3235 } 3236 3237 @Override 3238 public boolean onEnterScrollArea(int x, int y, int direction) { 3239 // Ignore the scroll area if we are dragging over the hot seat 3240 if (mLauncher.getHotseat() != null) { 3241 Rect r = new Rect(); 3242 mLauncher.getHotseat().getHitRect(r); 3243 if (r.contains(x, y)) { 3244 return false; 3245 } 3246 } 3247 3248 boolean result = false; 3249 if (!isSmall() && !mIsSwitchingState) { 3250 mInScrollArea = true; 3251 3252 final int page = (mNextPage != INVALID_PAGE ? mNextPage : mCurrentPage) + 3253 (direction == DragController.SCROLL_LEFT ? -1 : 1); 3254 cancelFolderCreation(); 3255 3256 if (0 <= page && page < getChildCount()) { 3257 CellLayout layout = (CellLayout) getChildAt(page); 3258 // Exit the current layout and mark the overlapping layout 3259 if (mDragTargetLayout != null) { 3260 mDragTargetLayout.setIsDragOverlapping(false); 3261 mDragTargetLayout.onDragExit(); 3262 } 3263 mDragTargetLayout = layout; 3264 mDragTargetLayout.setIsDragOverlapping(true); 3265 3266 // Workspace is responsible for drawing the edge glow on adjacent pages, 3267 // so we need to redraw the workspace when this may have changed. 3268 invalidate(); 3269 result = true; 3270 } 3271 } 3272 return result; 3273 } 3274 3275 @Override 3276 public boolean onExitScrollArea() { 3277 boolean result = false; 3278 if (mInScrollArea) { 3279 if (mDragTargetLayout != null) { 3280 mDragTargetLayout.setIsDragOverlapping(false); 3281 // Workspace is responsible for drawing the edge glow on adjacent pages, 3282 // so we need to redraw the workspace when this may have changed. 3283 invalidate(); 3284 } 3285 if (mDragTargetLayout != null && mDragHasEnteredWorkspace) { 3286 // Unmark the overlapping layout and re-enter the current layout 3287 mDragTargetLayout = getCurrentDropLayout(); 3288 mDragTargetLayout.onDragEnter(); 3289 } 3290 result = true; 3291 mInScrollArea = false; 3292 } 3293 return result; 3294 } 3295 3296 private void onResetScrollArea() { 3297 if (mDragTargetLayout != null) { 3298 // Unmark the overlapping layout 3299 mDragTargetLayout.setIsDragOverlapping(false); 3300 3301 // Workspace is responsible for drawing the edge glow on adjacent pages, 3302 // so we need to redraw the workspace when this may have changed. 3303 invalidate(); 3304 } 3305 mInScrollArea = false; 3306 } 3307 3308 /** 3309 * Returns a specific CellLayout 3310 */ 3311 CellLayout getParentCellLayoutForView(View v) { 3312 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3313 for (CellLayout layout : layouts) { 3314 if (layout.getChildrenLayout().indexOfChild(v) > -1) { 3315 return layout; 3316 } 3317 } 3318 return null; 3319 } 3320 3321 /** 3322 * Returns a list of all the CellLayouts in the workspace. 3323 */ 3324 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3325 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3326 int screenCount = getChildCount(); 3327 for (int screen = 0; screen < screenCount; screen++) { 3328 layouts.add(((CellLayout) getChildAt(screen))); 3329 } 3330 if (mLauncher.getHotseat() != null) { 3331 layouts.add(mLauncher.getHotseat().getLayout()); 3332 } 3333 return layouts; 3334 } 3335 3336 /** 3337 * We should only use this to search for specific children. Do not use this method to modify 3338 * CellLayoutChildren directly. 3339 */ 3340 ArrayList<CellLayoutChildren> getWorkspaceAndHotseatCellLayoutChildren() { 3341 ArrayList<CellLayoutChildren> childrenLayouts = new ArrayList<CellLayoutChildren>(); 3342 int screenCount = getChildCount(); 3343 for (int screen = 0; screen < screenCount; screen++) { 3344 childrenLayouts.add(((CellLayout) getChildAt(screen)).getChildrenLayout()); 3345 } 3346 if (mLauncher.getHotseat() != null) { 3347 childrenLayouts.add(mLauncher.getHotseat().getLayout().getChildrenLayout()); 3348 } 3349 return childrenLayouts; 3350 } 3351 3352 public Folder getFolderForTag(Object tag) { 3353 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3354 for (CellLayoutChildren layout: childrenLayouts) { 3355 int count = layout.getChildCount(); 3356 for (int i = 0; i < count; i++) { 3357 View child = layout.getChildAt(i); 3358 if (child instanceof Folder) { 3359 Folder f = (Folder) child; 3360 if (f.getInfo() == tag && f.getInfo().opened) { 3361 return f; 3362 } 3363 } 3364 } 3365 } 3366 return null; 3367 } 3368 3369 public View getViewForTag(Object tag) { 3370 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3371 for (CellLayoutChildren layout: childrenLayouts) { 3372 int count = layout.getChildCount(); 3373 for (int i = 0; i < count; i++) { 3374 View child = layout.getChildAt(i); 3375 if (child.getTag() == tag) { 3376 return child; 3377 } 3378 } 3379 } 3380 return null; 3381 } 3382 3383 void clearDropTargets() { 3384 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3385 for (CellLayoutChildren layout: childrenLayouts) { 3386 int childCount = layout.getChildCount(); 3387 for (int j = 0; j < childCount; j++) { 3388 View v = layout.getChildAt(j); 3389 if (v instanceof DropTarget) { 3390 mDragController.removeDropTarget((DropTarget) v); 3391 } 3392 } 3393 } 3394 } 3395 3396 void removeItems(final ArrayList<ApplicationInfo> apps) { 3397 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3398 3399 final HashSet<String> packageNames = new HashSet<String>(); 3400 final int appCount = apps.size(); 3401 for (int i = 0; i < appCount; i++) { 3402 packageNames.add(apps.get(i).componentName.getPackageName()); 3403 } 3404 3405 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3406 for (final CellLayout layoutParent: cellLayouts) { 3407 final ViewGroup layout = layoutParent.getChildrenLayout(); 3408 3409 // Avoid ANRs by treating each screen separately 3410 post(new Runnable() { 3411 public void run() { 3412 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3413 childrenToRemove.clear(); 3414 3415 int childCount = layout.getChildCount(); 3416 for (int j = 0; j < childCount; j++) { 3417 final View view = layout.getChildAt(j); 3418 Object tag = view.getTag(); 3419 3420 if (tag instanceof ShortcutInfo) { 3421 final ShortcutInfo info = (ShortcutInfo) tag; 3422 final Intent intent = info.intent; 3423 final ComponentName name = intent.getComponent(); 3424 3425 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3426 for (String packageName: packageNames) { 3427 if (packageName.equals(name.getPackageName())) { 3428 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3429 childrenToRemove.add(view); 3430 } 3431 } 3432 } 3433 } else if (tag instanceof FolderInfo) { 3434 final FolderInfo info = (FolderInfo) tag; 3435 final ArrayList<ShortcutInfo> contents = info.contents; 3436 final int contentsCount = contents.size(); 3437 final ArrayList<ShortcutInfo> appsToRemoveFromFolder = 3438 new ArrayList<ShortcutInfo>(); 3439 3440 for (int k = 0; k < contentsCount; k++) { 3441 final ShortcutInfo appInfo = contents.get(k); 3442 final Intent intent = appInfo.intent; 3443 final ComponentName name = intent.getComponent(); 3444 3445 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3446 for (String packageName: packageNames) { 3447 if (packageName.equals(name.getPackageName())) { 3448 appsToRemoveFromFolder.add(appInfo); 3449 } 3450 } 3451 } 3452 } 3453 for (ShortcutInfo item: appsToRemoveFromFolder) { 3454 info.remove(item); 3455 LauncherModel.deleteItemFromDatabase(mLauncher, item); 3456 } 3457 } else if (tag instanceof LauncherAppWidgetInfo) { 3458 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3459 final AppWidgetProviderInfo provider = 3460 widgets.getAppWidgetInfo(info.appWidgetId); 3461 if (provider != null) { 3462 for (String packageName: packageNames) { 3463 if (packageName.equals(provider.provider.getPackageName())) { 3464 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3465 childrenToRemove.add(view); 3466 } 3467 } 3468 } 3469 } 3470 } 3471 3472 childCount = childrenToRemove.size(); 3473 for (int j = 0; j < childCount; j++) { 3474 View child = childrenToRemove.get(j); 3475 // Note: We can not remove the view directly from CellLayoutChildren as this 3476 // does not re-mark the spaces as unoccupied. 3477 layoutParent.removeViewInLayout(child); 3478 if (child instanceof DropTarget) { 3479 mDragController.removeDropTarget((DropTarget)child); 3480 } 3481 } 3482 3483 if (childCount > 0) { 3484 layout.requestLayout(); 3485 layout.invalidate(); 3486 } 3487 } 3488 }); 3489 } 3490 } 3491 3492 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3493 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3494 for (CellLayoutChildren layout: childrenLayouts) { 3495 int childCount = layout.getChildCount(); 3496 for (int j = 0; j < childCount; j++) { 3497 final View view = layout.getChildAt(j); 3498 Object tag = view.getTag(); 3499 if (tag instanceof ShortcutInfo) { 3500 ShortcutInfo info = (ShortcutInfo)tag; 3501 // We need to check for ACTION_MAIN otherwise getComponent() might 3502 // return null for some shortcuts (for instance, for shortcuts to 3503 // web pages.) 3504 final Intent intent = info.intent; 3505 final ComponentName name = intent.getComponent(); 3506 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3507 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3508 final int appCount = apps.size(); 3509 for (int k = 0; k < appCount; k++) { 3510 ApplicationInfo app = apps.get(k); 3511 if (app.componentName.equals(name)) { 3512 info.setIcon(mIconCache.getIcon(info.intent)); 3513 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 3514 new FastBitmapDrawable(info.getIcon(mIconCache)), 3515 null, null); 3516 } 3517 } 3518 } 3519 } 3520 } 3521 } 3522 } 3523 3524 void moveToDefaultScreen(boolean animate) { 3525 if (!isSmall()) { 3526 if (animate) { 3527 snapToPage(mDefaultPage); 3528 } else { 3529 setCurrentPage(mDefaultPage); 3530 } 3531 } 3532 getChildAt(mDefaultPage).requestFocus(); 3533 } 3534 3535 @Override 3536 public void syncPages() { 3537 } 3538 3539 @Override 3540 public void syncPageItems(int page, boolean immediate) { 3541 } 3542 3543 @Override 3544 protected String getCurrentPageDescription() { 3545 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 3546 return String.format(mContext.getString(R.string.workspace_scroll_format), 3547 page + 1, getChildCount()); 3548 } 3549 3550 public void getLocationInDragLayer(int[] loc) { 3551 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 3552 } 3553 3554 void setFadeForOverScroll(float fade) { 3555 if (!isScrollingIndicatorEnabled()) return; 3556 3557 mOverscrollFade = fade; 3558 float reducedFade = 0.5f + 0.5f * (1 - fade); 3559 final ViewGroup parent = (ViewGroup) getParent(); 3560 final ImageView qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3561 final ImageView dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3562 final View scrollIndicator = getScrollingIndicator(); 3563 3564 cancelScrollingIndicatorAnimations(); 3565 if (qsbDivider != null) qsbDivider.setAlpha(reducedFade); 3566 if (dockDivider != null) dockDivider.setAlpha(reducedFade); 3567 scrollIndicator.setAlpha(1 - fade); 3568 } 3569} 3570