Workspace.java revision 82ac8a24883a3495a96189a6e5eb307f50177e0e
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.launcher2; 18 19import android.animation.Animator; 20import android.animation.AnimatorSet; 21import android.animation.ObjectAnimator; 22import android.animation.TimeInterpolator; 23import android.animation.ValueAnimator; 24import android.animation.ValueAnimator.AnimatorUpdateListener; 25import android.app.AlertDialog; 26import android.app.WallpaperManager; 27import android.appwidget.AppWidgetHostView; 28import android.appwidget.AppWidgetManager; 29import android.appwidget.AppWidgetProviderInfo; 30import android.content.ClipData; 31import android.content.ClipDescription; 32import android.content.ComponentName; 33import android.content.Context; 34import android.content.Intent; 35import android.content.res.Resources; 36import android.content.res.TypedArray; 37import android.graphics.Bitmap; 38import android.graphics.Camera; 39import android.graphics.Canvas; 40import android.graphics.Matrix; 41import android.graphics.Paint; 42import android.graphics.Point; 43import android.graphics.PorterDuff; 44import android.graphics.Rect; 45import android.graphics.RectF; 46import android.graphics.Region.Op; 47import android.graphics.drawable.Drawable; 48import android.os.IBinder; 49import android.os.Parcelable; 50import android.util.AttributeSet; 51import android.util.DisplayMetrics; 52import android.util.Log; 53import android.util.Pair; 54import android.view.Display; 55import android.view.DragEvent; 56import android.view.MotionEvent; 57import android.view.View; 58import android.view.ViewGroup; 59import android.view.View.MeasureSpec; 60import android.view.animation.DecelerateInterpolator; 61import android.widget.ImageView; 62import android.widget.TextView; 63import android.widget.Toast; 64 65import com.android.launcher.R; 66import com.android.launcher2.FolderIcon.FolderRingAnimator; 67import com.android.launcher2.InstallWidgetReceiver.WidgetMimeTypeHandlerData; 68 69import java.util.ArrayList; 70import java.util.HashSet; 71import java.util.List; 72 73/** 74 * The workspace is a wide area with a wallpaper and a finite number of pages. 75 * Each page contains a number of icons, folders or widgets the user can 76 * interact with. A workspace is meant to be used with a fixed width only. 77 */ 78public class Workspace extends SmoothPagedView 79 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 80 DragController.DragListener, LauncherTransitionable { 81 @SuppressWarnings({"UnusedDeclaration"}) 82 private static final String TAG = "Launcher.Workspace"; 83 84 // Y rotation to apply to the workspace screens 85 private static final float WORKSPACE_ROTATION = 12.5f; 86 private static final float WORKSPACE_OVERSCROLL_ROTATION = 24f; 87 private static float CAMERA_DISTANCE = 6500; 88 89 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 90 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 91 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 92 93 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 94 private static final int ADJACENT_SCREEN_DROP_DURATION = 300; 95 private static final int FLING_THRESHOLD_VELOCITY = 500; 96 97 // These animators are used to fade the children's outlines 98 private ObjectAnimator mChildrenOutlineFadeInAnimation; 99 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 100 private float mChildrenOutlineAlpha = 0; 101 102 // These properties refer to the background protection gradient used for AllApps and Customize 103 private ValueAnimator mBackgroundFadeInAnimation; 104 private ValueAnimator mBackgroundFadeOutAnimation; 105 private Drawable mBackground; 106 boolean mDrawBackground = true; 107 private float mBackgroundAlpha = 0; 108 private float mOverScrollMaxBackgroundAlpha = 0.0f; 109 private int mOverScrollPageIndex = -1; 110 111 private float mWallpaperScrollRatio = 1.0f; 112 113 private final WallpaperManager mWallpaperManager; 114 private IBinder mWindowToken; 115 private static final float WALLPAPER_SCREENS_SPAN = 2f; 116 117 private int mDefaultPage; 118 119 /** 120 * CellInfo for the cell that is currently being dragged 121 */ 122 private CellLayout.CellInfo mDragInfo; 123 124 /** 125 * Target drop area calculated during last acceptDrop call. 126 */ 127 private int[] mTargetCell = new int[2]; 128 129 /** 130 * The CellLayout that is currently being dragged over 131 */ 132 private CellLayout mDragTargetLayout = null; 133 private boolean mDragHasEnteredWorkspace = false; 134 135 private Launcher mLauncher; 136 private IconCache mIconCache; 137 private DragController mDragController; 138 139 // These are temporary variables to prevent having to allocate a new object just to 140 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 141 private int[] mTempCell = new int[2]; 142 private int[] mTempEstimate = new int[2]; 143 private float[] mDragViewVisualCenter = new float[2]; 144 private float[] mTempDragCoordinates = new float[2]; 145 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 146 private float[] mTempDragBottomRightCoordinates = new float[2]; 147 private Matrix mTempInverseMatrix = new Matrix(); 148 149 private SpringLoadedDragController mSpringLoadedDragController; 150 private float mSpringLoadedShrinkFactor; 151 152 private static final int DEFAULT_CELL_COUNT_X = 4; 153 private static final int DEFAULT_CELL_COUNT_Y = 4; 154 155 // State variable that indicates whether the pages are small (ie when you're 156 // in all apps or customize mode) 157 158 enum State { NORMAL, SPRING_LOADED, SMALL }; 159 private State mState = State.NORMAL; 160 private boolean mIsSwitchingState = false; 161 162 boolean mAnimatingViewIntoPlace = false; 163 boolean mIsDragOccuring = false; 164 boolean mChildrenLayersEnabled = true; 165 166 /** Is the user is dragging an item near the edge of a page? */ 167 private boolean mInScrollArea = false; 168 169 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 170 private Bitmap mDragOutline = null; 171 private final Rect mTempRect = new Rect(); 172 private final int[] mTempXY = new int[2]; 173 private int mDragViewMultiplyColor; 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 = 1f; 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 final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); 283 final float systemBarHeight = res.getDimension(R.dimen.status_bar_height); 284 final float smallestScreenDim = res.getConfiguration().smallestScreenWidthDp; 285 286 cellCountX = 1; 287 while (CellLayout.widthInPortrait(res, cellCountX + 1) <= smallestScreenDim) { 288 cellCountX++; 289 } 290 291 cellCountY = 1; 292 while (actionBarHeight + CellLayout.heightInLandscape(res, cellCountY + 1) 293 <= smallestScreenDim - systemBarHeight) { 294 cellCountY++; 295 } 296 } 297 298 mSpringLoadedShrinkFactor = 299 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 300 mDragViewMultiplyColor = res.getColor(R.color.drag_view_multiply_color); 301 302 // if the value is manually specified, use that instead 303 cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX); 304 cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY); 305 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 306 a.recycle(); 307 308 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 309 setHapticFeedbackEnabled(false); 310 311 mLauncher = (Launcher) context; 312 initWorkspace(); 313 314 // Disable multitouch across the workspace/all apps/customize tray 315 setMotionEventSplittingEnabled(true); 316 } 317 318 // estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each 319 // dimension if unsuccessful 320 public int[] estimateItemSize(int hSpan, int vSpan, 321 PendingAddItemInfo pendingItemInfo, boolean springLoaded) { 322 int[] size = new int[2]; 323 if (getChildCount() > 0) { 324 CellLayout cl = (CellLayout) mLauncher.getWorkspace().getChildAt(0); 325 RectF r = estimateItemPosition(cl, pendingItemInfo, 0, 0, hSpan, vSpan); 326 size[0] = (int) r.width(); 327 size[1] = (int) r.height(); 328 if (springLoaded) { 329 size[0] *= mSpringLoadedShrinkFactor; 330 size[1] *= mSpringLoadedShrinkFactor; 331 } 332 return size; 333 } else { 334 size[0] = Integer.MAX_VALUE; 335 size[1] = Integer.MAX_VALUE; 336 return size; 337 } 338 } 339 public RectF estimateItemPosition(CellLayout cl, ItemInfo pendingInfo, 340 int hCell, int vCell, int hSpan, int vSpan) { 341 RectF r = new RectF(); 342 cl.cellToRect(hCell, vCell, hSpan, vSpan, r); 343 return r; 344 } 345 346 public void buildPageHardwareLayers() { 347 if (getWindowToken() != null) { 348 final int childCount = getChildCount(); 349 for (int i = 0; i < childCount; i++) { 350 CellLayout cl = (CellLayout) getChildAt(i); 351 cl.buildChildrenLayer(); 352 } 353 } 354 } 355 356 public void onDragStart(DragSource source, Object info, int dragAction) { 357 mIsDragOccuring = true; 358 updateChildrenLayersEnabled(); 359 mLauncher.lockScreenOrientationOnLargeUI(); 360 } 361 362 public void onDragEnd() { 363 mIsDragOccuring = false; 364 updateChildrenLayersEnabled(); 365 mLauncher.unlockScreenOrientationOnLargeUI(); 366 } 367 368 /** 369 * Initializes various states for this workspace. 370 */ 371 protected void initWorkspace() { 372 Context context = getContext(); 373 mCurrentPage = mDefaultPage; 374 Launcher.setScreen(mCurrentPage); 375 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 376 mIconCache = app.getIconCache(); 377 mExternalDragOutlinePaint.setAntiAlias(true); 378 setWillNotDraw(false); 379 setChildrenDrawnWithCacheEnabled(true); 380 381 try { 382 final Resources res = getResources(); 383 mBackground = res.getDrawable(R.drawable.apps_customize_bg); 384 } catch (Resources.NotFoundException e) { 385 // In this case, we will skip drawing background protection 386 } 387 388 mWallpaperOffset = new WallpaperOffsetInterpolator(); 389 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 390 mDisplayWidth = display.getWidth(); 391 mDisplayHeight = display.getHeight(); 392 mWallpaperTravelWidth = (int) (mDisplayWidth * 393 wallpaperTravelToScreenWidthRatio(mDisplayWidth, mDisplayHeight)); 394 395 mFlingThresholdVelocity = (int) (FLING_THRESHOLD_VELOCITY * mDensity); 396 397 } 398 399 @Override 400 protected int getScrollMode() { 401 return SmoothPagedView.X_LARGE_MODE; 402 } 403 404 @Override 405 protected void onViewAdded(View child) { 406 super.onViewAdded(child); 407 if (!(child instanceof CellLayout)) { 408 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 409 } 410 CellLayout cl = ((CellLayout) child); 411 cl.setOnInterceptTouchListener(this); 412 cl.setClickable(true); 413 cl.enableHardwareLayers(); 414 } 415 416 /** 417 * @return The open folder on the current screen, or null if there is none 418 */ 419 Folder getOpenFolder() { 420 DragLayer dragLayer = mLauncher.getDragLayer(); 421 int count = dragLayer.getChildCount(); 422 for (int i = 0; i < count; i++) { 423 View child = dragLayer.getChildAt(i); 424 if (child instanceof Folder) { 425 Folder folder = (Folder) child; 426 if (folder.getInfo().opened) 427 return folder; 428 } 429 } 430 return null; 431 } 432 433 boolean isTouchActive() { 434 return mTouchState != TOUCH_STATE_REST; 435 } 436 437 /** 438 * Adds the specified child in the specified screen. The position and dimension of 439 * the child are defined by x, y, spanX and spanY. 440 * 441 * @param child The child to add in one of the workspace's screens. 442 * @param screen The screen in which to add the child. 443 * @param x The X position of the child in the screen's grid. 444 * @param y The Y position of the child in the screen's grid. 445 * @param spanX The number of cells spanned horizontally by the child. 446 * @param spanY The number of cells spanned vertically by the child. 447 */ 448 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY) { 449 addInScreen(child, container, screen, x, y, spanX, spanY, false); 450 } 451 452 /** 453 * Adds the specified child in the specified screen. The position and dimension of 454 * the child are defined by x, y, spanX and spanY. 455 * 456 * @param child The child to add in one of the workspace's screens. 457 * @param screen The screen in which to add the child. 458 * @param x The X position of the child in the screen's grid. 459 * @param y The Y position of the child in the screen's grid. 460 * @param spanX The number of cells spanned horizontally by the child. 461 * @param spanY The number of cells spanned vertically by the child. 462 * @param insert When true, the child is inserted at the beginning of the children list. 463 */ 464 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY, 465 boolean insert) { 466 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 467 if (screen < 0 || screen >= getChildCount()) { 468 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 469 + " (was " + screen + "); skipping child"); 470 return; 471 } 472 } 473 474 final CellLayout layout; 475 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 476 layout = mLauncher.getHotseat().getLayout(); 477 child.setOnKeyListener(null); 478 479 // Hide folder title in the hotseat 480 if (child instanceof FolderIcon) { 481 ((FolderIcon) child).setTextVisible(false); 482 } 483 484 if (screen < 0) { 485 screen = mLauncher.getHotseat().getOrderInHotseat(x, y); 486 } else { 487 // Note: We do this to ensure that the hotseat is always laid out in the orientation 488 // of the hotseat in order regardless of which orientation they were added 489 x = mLauncher.getHotseat().getCellXFromOrder(screen); 490 y = mLauncher.getHotseat().getCellYFromOrder(screen); 491 } 492 } else { 493 // Show folder title if not in the hotseat 494 if (child instanceof FolderIcon) { 495 ((FolderIcon) child).setTextVisible(true); 496 } 497 498 layout = (CellLayout) getChildAt(screen); 499 child.setOnKeyListener(new IconKeyEventListener()); 500 } 501 502 LayoutParams genericLp = child.getLayoutParams(); 503 CellLayout.LayoutParams lp; 504 if (genericLp == null || !(genericLp instanceof CellLayout.LayoutParams)) { 505 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 506 } else { 507 lp = (CellLayout.LayoutParams) genericLp; 508 lp.cellX = x; 509 lp.cellY = y; 510 lp.cellHSpan = spanX; 511 lp.cellVSpan = spanY; 512 } 513 514 if (spanX < 0 && spanY < 0) { 515 lp.isLockedToGrid = false; 516 } 517 518 // Get the canonical child id to uniquely represent this view in this screen 519 int childId = LauncherModel.getCellLayoutChildId(container, screen, x, y, spanX, spanY); 520 boolean markCellsAsOccupied = !(child instanceof Folder); 521 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 522 // TODO: This branch occurs when the workspace is adding views 523 // outside of the defined grid 524 // maybe we should be deleting these items from the LauncherModel? 525 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 526 } 527 528 if (!(child instanceof Folder)) { 529 child.setHapticFeedbackEnabled(false); 530 child.setOnLongClickListener(mLongClickListener); 531 } 532 if (child instanceof DropTarget) { 533 mDragController.addDropTarget((DropTarget) child); 534 } 535 } 536 537 /** 538 * Check if the point (x, y) hits a given page. 539 */ 540 private boolean hitsPage(int index, float x, float y) { 541 final View page = getChildAt(index); 542 if (page != null) { 543 float[] localXY = { x, y }; 544 mapPointFromSelfToChild(page, localXY); 545 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 546 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 547 } 548 return false; 549 } 550 551 @Override 552 protected boolean hitsPreviousPage(float x, float y) { 553 // mNextPage is set to INVALID_PAGE whenever we are stationary. 554 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 555 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 556 557 // Only allow tap to next page on large devices, where there's significant margin outside 558 // the active workspace 559 return LauncherApplication.isScreenLarge() && hitsPage(current - 1, x, y); 560 } 561 562 @Override 563 protected boolean hitsNextPage(float x, float y) { 564 // mNextPage is set to INVALID_PAGE whenever we are stationary. 565 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 566 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 567 568 // Only allow tap to next page on large devices, where there's significant margin outside 569 // the active workspace 570 return LauncherApplication.isScreenLarge() && hitsPage(current + 1, x, y); 571 } 572 573 /** 574 * Called directly from a CellLayout (not by the framework), after we've been added as a 575 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 576 * that it should intercept touch events, which is not something that is normally supported. 577 */ 578 @Override 579 public boolean onTouch(View v, MotionEvent event) { 580 return (isSmall() || mIsSwitchingState); 581 } 582 583 public boolean isSwitchingState() { 584 return mIsSwitchingState; 585 } 586 587 protected void onWindowVisibilityChanged (int visibility) { 588 mLauncher.onWindowVisibilityChanged(visibility); 589 } 590 591 @Override 592 public boolean dispatchUnhandledMove(View focused, int direction) { 593 if (isSmall() || mIsSwitchingState) { 594 // when the home screens are shrunken, shouldn't allow side-scrolling 595 return false; 596 } 597 return super.dispatchUnhandledMove(focused, direction); 598 } 599 600 @Override 601 public boolean onInterceptTouchEvent(MotionEvent ev) { 602 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 603 case MotionEvent.ACTION_DOWN: 604 mXDown = ev.getX(); 605 mYDown = ev.getY(); 606 break; 607 case MotionEvent.ACTION_POINTER_UP: 608 case MotionEvent.ACTION_UP: 609 if (mTouchState == TOUCH_STATE_REST) { 610 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 611 if (!currentPage.lastDownOnOccupiedCell()) { 612 onWallpaperTap(ev); 613 } 614 } 615 } 616 return super.onInterceptTouchEvent(ev); 617 } 618 619 @Override 620 protected void determineScrollingStart(MotionEvent ev) { 621 if (!isSmall() && !mIsSwitchingState) { 622 float deltaX = Math.abs(ev.getX() - mXDown); 623 float deltaY = Math.abs(ev.getY() - mYDown); 624 625 if (Float.compare(deltaX, 0f) == 0) return; 626 627 float slope = deltaY / deltaX; 628 float theta = (float) Math.atan(slope); 629 630 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 631 cancelCurrentPageLongPress(); 632 } 633 634 if (theta > MAX_SWIPE_ANGLE) { 635 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 636 return; 637 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 638 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 639 // increase the touch slop to make it harder to begin scrolling the workspace. This 640 // results in vertically scrolling widgets to more easily. The higher the angle, the 641 // more we increase touch slop. 642 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 643 float extraRatio = (float) 644 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 645 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 646 } else { 647 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 648 super.determineScrollingStart(ev); 649 } 650 } 651 } 652 653 @Override 654 protected boolean isScrollingIndicatorEnabled() { 655 return mState != State.SPRING_LOADED; 656 } 657 658 protected void onPageBeginMoving() { 659 super.onPageBeginMoving(); 660 661 if (isHardwareAccelerated()) { 662 updateChildrenLayersEnabled(); 663 } else { 664 if (mNextPage != INVALID_PAGE) { 665 // we're snapping to a particular screen 666 enableChildrenCache(mCurrentPage, mNextPage); 667 } else { 668 // this is when user is actively dragging a particular screen, they might 669 // swipe it either left or right (but we won't advance by more than one screen) 670 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 671 } 672 } 673 674 // Only show page outlines as we pan if we are on large screen 675 if (LauncherApplication.isScreenLarge()) { 676 showOutlines(); 677 } 678 679 // Show the scroll indicator as you pan the page 680 showScrollingIndicator(false); 681 } 682 683 protected void onPageEndMoving() { 684 super.onPageEndMoving(); 685 686 if (isHardwareAccelerated()) { 687 updateChildrenLayersEnabled(); 688 } else { 689 clearChildrenCache(); 690 } 691 692 693 if (mDragController.isDragging()) { 694 if (isSmall()) { 695 // If we are in springloaded mode, then force an event to check if the current touch 696 // is under a new page (to scroll to) 697 mDragController.forceMoveEvent(); 698 } 699 } else { 700 // If we are not mid-dragging, hide the page outlines if we are on a large screen 701 if (LauncherApplication.isScreenLarge()) { 702 hideOutlines(); 703 } 704 705 // Hide the scroll indicator as you pan the page 706 if (!mDragController.isDragging()) { 707 hideScrollingIndicator(false); 708 } 709 } 710 mOverScrollMaxBackgroundAlpha = 0.0f; 711 mOverScrollPageIndex = -1; 712 713 if (mDelayedResizeRunnable != null) { 714 mDelayedResizeRunnable.run(); 715 mDelayedResizeRunnable = null; 716 } 717 } 718 719 @Override 720 protected void notifyPageSwitchListener() { 721 super.notifyPageSwitchListener(); 722 Launcher.setScreen(mCurrentPage); 723 }; 724 725 // As a ratio of screen height, the total distance we want the parallax effect to span 726 // horizontally 727 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 728 float aspectRatio = width / (float) height; 729 730 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 731 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 732 // We will use these two data points to extrapolate how much the wallpaper parallax effect 733 // to span (ie travel) at any aspect ratio: 734 735 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 736 final float ASPECT_RATIO_PORTRAIT = 10/16f; 737 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 738 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 739 740 // To find out the desired width at different aspect ratios, we use the following two 741 // formulas, where the coefficient on x is the aspect ratio (width/height): 742 // (16/10)x + y = 1.5 743 // (10/16)x + y = 1.2 744 // We solve for x and y and end up with a final formula: 745 final float x = 746 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 747 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 748 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 749 return x * aspectRatio + y; 750 } 751 752 // The range of scroll values for Workspace 753 private int getScrollRange() { 754 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 755 } 756 757 protected void setWallpaperDimension() { 758 DisplayMetrics displayMetrics = new DisplayMetrics(); 759 mLauncher.getWindowManager().getDefaultDisplay().getRealMetrics(displayMetrics); 760 final int maxDim = Math.max(displayMetrics.widthPixels, displayMetrics.heightPixels); 761 final int minDim = Math.min(displayMetrics.widthPixels, displayMetrics.heightPixels); 762 763 // We need to ensure that there is enough extra space in the wallpaper for the intended 764 // parallax effects 765 if (LauncherApplication.isScreenLarge()) { 766 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 767 mWallpaperHeight = maxDim; 768 } else { 769 mWallpaperWidth = Math.max((int) (minDim * WALLPAPER_SCREENS_SPAN), maxDim); 770 mWallpaperHeight = maxDim; 771 } 772 new Thread("setWallpaperDimension") { 773 public void run() { 774 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 775 } 776 }.start(); 777 } 778 779 public void setVerticalWallpaperOffset(float offset) { 780 mWallpaperOffset.setFinalY(offset); 781 } 782 public float getVerticalWallpaperOffset() { 783 return mWallpaperOffset.getCurrY(); 784 } 785 public void setHorizontalWallpaperOffset(float offset) { 786 mWallpaperOffset.setFinalX(offset); 787 } 788 public float getHorizontalWallpaperOffset() { 789 return mWallpaperOffset.getCurrX(); 790 } 791 792 private float wallpaperOffsetForCurrentScroll() { 793 // The wallpaper travel width is how far, from left to right, the wallpaper will move 794 // at this orientation. On tablets in portrait mode we don't move all the way to the 795 // edges of the wallpaper, or otherwise the parallax effect would be too strong. 796 int wallpaperTravelWidth = mWallpaperWidth; 797 if (LauncherApplication.isScreenLarge()) { 798 wallpaperTravelWidth = mWallpaperTravelWidth; 799 } 800 801 // Set wallpaper offset steps (1 / (number of screens - 1)) 802 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f); 803 804 // For the purposes of computing the scrollRange and overScrollOffset, we assume 805 // that mLayoutScale is 1. This means that when we're in spring-loaded mode, 806 // there's no discrepancy between the wallpaper offset for a given page. 807 float layoutScale = mLayoutScale; 808 mLayoutScale = 1f; 809 int scrollRange = getScrollRange(); 810 811 // Again, we adjust the wallpaper offset to be consistent between values of mLayoutScale 812 float adjustedScrollX = Math.max(0, Math.min(mScrollX, mMaxScrollX)); 813 adjustedScrollX *= mWallpaperScrollRatio; 814 mLayoutScale = layoutScale; 815 816 float scrollProgress = 817 adjustedScrollX / (float) scrollRange; 818 float offsetInDips = wallpaperTravelWidth * scrollProgress + 819 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 820 float offset = offsetInDips / (float) mWallpaperWidth; 821 return offset; 822 } 823 private void syncWallpaperOffsetWithScroll() { 824 final boolean enableWallpaperEffects = isHardwareAccelerated(); 825 if (enableWallpaperEffects) { 826 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 827 } 828 } 829 830 public void updateWallpaperOffsetImmediately() { 831 mUpdateWallpaperOffsetImmediately = true; 832 } 833 834 private void updateWallpaperOffsets() { 835 boolean updateNow = false; 836 boolean keepUpdating = true; 837 if (mUpdateWallpaperOffsetImmediately) { 838 updateNow = true; 839 keepUpdating = false; 840 mWallpaperOffset.jumpToFinal(); 841 mUpdateWallpaperOffsetImmediately = false; 842 } else { 843 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 844 } 845 if (updateNow) { 846 if (mWindowToken != null) { 847 mWallpaperManager.setWallpaperOffsets(mWindowToken, 848 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 849 } 850 } 851 if (keepUpdating) { 852 invalidate(); 853 } 854 } 855 856 @Override 857 protected void updateCurrentPageScroll() { 858 super.updateCurrentPageScroll(); 859 computeWallpaperScrollRatio(mCurrentPage); 860 } 861 862 @Override 863 protected void snapToPage(int whichPage) { 864 super.snapToPage(whichPage); 865 computeWallpaperScrollRatio(whichPage); 866 } 867 868 private void computeWallpaperScrollRatio(int page) { 869 // Here, we determine what the desired scroll would be with and without a layout scale, 870 // and compute a ratio between the two. This allows us to adjust the wallpaper offset 871 // as though there is no layout scale. 872 float layoutScale = mLayoutScale; 873 int scaled = getChildOffset(page) - getRelativeChildOffset(page); 874 mLayoutScale = 1.0f; 875 float unscaled = getChildOffset(page) - getRelativeChildOffset(page); 876 mLayoutScale = layoutScale; 877 if (scaled > 0) { 878 mWallpaperScrollRatio = (1.0f * unscaled) / scaled; 879 } else { 880 mWallpaperScrollRatio = 1f; 881 } 882 } 883 884 class WallpaperOffsetInterpolator { 885 float mFinalHorizontalWallpaperOffset = 0.0f; 886 float mFinalVerticalWallpaperOffset = 0.5f; 887 float mHorizontalWallpaperOffset = 0.0f; 888 float mVerticalWallpaperOffset = 0.5f; 889 long mLastWallpaperOffsetUpdateTime; 890 boolean mIsMovingFast; 891 boolean mOverrideHorizontalCatchupConstant; 892 float mHorizontalCatchupConstant = 0.35f; 893 float mVerticalCatchupConstant = 0.35f; 894 895 public WallpaperOffsetInterpolator() { 896 } 897 898 public void setOverrideHorizontalCatchupConstant(boolean override) { 899 mOverrideHorizontalCatchupConstant = override; 900 } 901 902 public void setHorizontalCatchupConstant(float f) { 903 mHorizontalCatchupConstant = f; 904 } 905 906 public void setVerticalCatchupConstant(float f) { 907 mVerticalCatchupConstant = f; 908 } 909 910 public boolean computeScrollOffset() { 911 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 912 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 913 mIsMovingFast = false; 914 return false; 915 } 916 boolean isLandscape = mDisplayWidth > mDisplayHeight; 917 918 long currentTime = System.currentTimeMillis(); 919 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 920 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 921 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 922 923 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 924 if (!mIsMovingFast && xdiff > 0.07) { 925 mIsMovingFast = true; 926 } 927 928 float fractionToCatchUpIn1MsHorizontal; 929 if (mOverrideHorizontalCatchupConstant) { 930 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 931 } else if (mIsMovingFast) { 932 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 933 } else { 934 // slow 935 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 936 } 937 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 938 939 fractionToCatchUpIn1MsHorizontal /= 33f; 940 fractionToCatchUpIn1MsVertical /= 33f; 941 942 final float UPDATE_THRESHOLD = 0.00001f; 943 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 944 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 945 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 946 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 947 948 // Don't have any lag between workspace and wallpaper on non-large devices 949 if (!LauncherApplication.isScreenLarge() || jumpToFinalValue) { 950 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 951 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 952 } else { 953 float percentToCatchUpVertical = 954 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 955 float percentToCatchUpHorizontal = 956 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 957 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 958 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 959 } 960 961 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 962 return true; 963 } 964 965 public float getCurrX() { 966 return mHorizontalWallpaperOffset; 967 } 968 969 public float getFinalX() { 970 return mFinalHorizontalWallpaperOffset; 971 } 972 973 public float getCurrY() { 974 return mVerticalWallpaperOffset; 975 } 976 977 public float getFinalY() { 978 return mFinalVerticalWallpaperOffset; 979 } 980 981 public void setFinalX(float x) { 982 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 983 } 984 985 public void setFinalY(float y) { 986 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 987 } 988 989 public void jumpToFinal() { 990 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 991 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 992 } 993 } 994 995 @Override 996 public void computeScroll() { 997 super.computeScroll(); 998 syncWallpaperOffsetWithScroll(); 999 } 1000 1001 void showOutlines() { 1002 if (!isSmall() && !mIsSwitchingState) { 1003 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1004 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1005 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 1006 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 1007 mChildrenOutlineFadeInAnimation.start(); 1008 } 1009 } 1010 1011 void hideOutlines() { 1012 if (!isSmall() && !mIsSwitchingState) { 1013 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1014 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1015 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 1016 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 1017 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 1018 mChildrenOutlineFadeOutAnimation.start(); 1019 } 1020 } 1021 1022 public void showOutlinesTemporarily() { 1023 if (!mIsPageMoving && !isTouchActive()) { 1024 snapToPage(mCurrentPage); 1025 } 1026 } 1027 1028 public void setChildrenOutlineAlpha(float alpha) { 1029 mChildrenOutlineAlpha = alpha; 1030 for (int i = 0; i < getChildCount(); i++) { 1031 CellLayout cl = (CellLayout) getChildAt(i); 1032 cl.setBackgroundAlpha(alpha); 1033 } 1034 } 1035 1036 public float getChildrenOutlineAlpha() { 1037 return mChildrenOutlineAlpha; 1038 } 1039 1040 void disableBackground() { 1041 mDrawBackground = false; 1042 } 1043 void enableBackground() { 1044 mDrawBackground = true; 1045 } 1046 1047 private void animateBackgroundGradient(float finalAlpha, boolean animated) { 1048 if (mBackground == null) return; 1049 if (mBackgroundFadeInAnimation != null) { 1050 mBackgroundFadeInAnimation.cancel(); 1051 mBackgroundFadeInAnimation = null; 1052 } 1053 if (mBackgroundFadeOutAnimation != null) { 1054 mBackgroundFadeOutAnimation.cancel(); 1055 mBackgroundFadeOutAnimation = null; 1056 } 1057 float startAlpha = getBackgroundAlpha(); 1058 if (finalAlpha != startAlpha) { 1059 if (animated) { 1060 mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(startAlpha, finalAlpha); 1061 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1062 public void onAnimationUpdate(ValueAnimator animation) { 1063 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1064 } 1065 }); 1066 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1067 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1068 mBackgroundFadeOutAnimation.start(); 1069 } else { 1070 setBackgroundAlpha(finalAlpha); 1071 } 1072 } 1073 } 1074 1075 public void setBackgroundAlpha(float alpha) { 1076 if (alpha != mBackgroundAlpha) { 1077 mBackgroundAlpha = alpha; 1078 invalidate(); 1079 } 1080 } 1081 1082 public float getBackgroundAlpha() { 1083 return mBackgroundAlpha; 1084 } 1085 1086 /** 1087 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 1088 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 1089 * as being larger. This method computes what offset the rotated view should be translated 1090 * in order to minimize this perceived gap. 1091 * @param degrees Angle of the view 1092 * @param width Width of the view 1093 * @param height Height of the view 1094 * @return Offset to be used in a View.setTranslationX() call 1095 */ 1096 private float getOffsetXForRotation(float degrees, int width, int height) { 1097 mMatrix.reset(); 1098 mCamera.save(); 1099 mCamera.rotateY(Math.abs(degrees)); 1100 mCamera.getMatrix(mMatrix); 1101 mCamera.restore(); 1102 1103 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 1104 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 1105 mTempFloat2[0] = width; 1106 mTempFloat2[1] = height; 1107 mMatrix.mapPoints(mTempFloat2); 1108 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 1109 } 1110 1111 float backgroundAlphaInterpolator(float r) { 1112 float pivotA = 0.1f; 1113 float pivotB = 0.4f; 1114 if (r < pivotA) { 1115 return 0; 1116 } else if (r > pivotB) { 1117 return 1.0f; 1118 } else { 1119 return (r - pivotA)/(pivotB - pivotA); 1120 } 1121 } 1122 1123 float overScrollBackgroundAlphaInterpolator(float r) { 1124 float threshold = 0.08f; 1125 1126 if (r > mOverScrollMaxBackgroundAlpha) { 1127 mOverScrollMaxBackgroundAlpha = r; 1128 } else if (r < mOverScrollMaxBackgroundAlpha) { 1129 r = mOverScrollMaxBackgroundAlpha; 1130 } 1131 1132 return Math.min(r / threshold, 1.0f); 1133 } 1134 1135 private void screenScrolledLargeUI(int screenCenter) { 1136 if (isSwitchingState()) return; 1137 boolean isInOverscroll = false; 1138 for (int i = 0; i < getChildCount(); i++) { 1139 CellLayout cl = (CellLayout) getChildAt(i); 1140 if (cl != null) { 1141 float scrollProgress = getScrollProgress(screenCenter, cl, i); 1142 float rotation = WORKSPACE_ROTATION * scrollProgress; 1143 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1144 1145 // If the current page (i) is being over scrolled, we use a different 1146 // set of rules for setting the background alpha multiplier. 1147 if (!isSmall()) { 1148 if ((mOverScrollX < 0 && i == 0) || (mOverScrollX > mMaxScrollX && 1149 i == getChildCount() -1)) { 1150 isInOverscroll = true; 1151 rotation *= -1; 1152 cl.setBackgroundAlphaMultiplier( 1153 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 1154 mOverScrollPageIndex = i; 1155 cl.setOverScrollAmount(Math.abs(scrollProgress), i == 0); 1156 cl.setPivotX(cl.getMeasuredWidth() * (i == 0 ? 0.75f : 0.25f)); 1157 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1158 cl.setOverscrollTransformsDirty(true); 1159 } else if (mOverScrollPageIndex != i) { 1160 cl.setBackgroundAlphaMultiplier( 1161 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1162 } 1163 } 1164 cl.setTranslationX(translationX); 1165 cl.setRotationY(rotation); 1166 if (mFadeInAdjacentScreens && !isSmall()) { 1167 float alpha = 1 - Math.abs(scrollProgress); 1168 cl.setAlpha(alpha); 1169 } 1170 } 1171 } 1172 if (!isSwitchingState() && !isInOverscroll) { 1173 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1174 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1175 } 1176 invalidate(); 1177 } 1178 1179 private void screenScrolledStandardUI(int screenCenter) { 1180 if (mOverScrollX < 0 || mOverScrollX > mMaxScrollX) { 1181 int index = mOverScrollX < 0 ? 0 : getChildCount() - 1; 1182 CellLayout cl = (CellLayout) getChildAt(index); 1183 float scrollProgress = getScrollProgress(screenCenter, cl, index); 1184 cl.setOverScrollAmount(Math.abs(scrollProgress), index == 0); 1185 float rotation = - WORKSPACE_OVERSCROLL_ROTATION * scrollProgress; 1186 cl.setCameraDistance(mDensity * CAMERA_DISTANCE); 1187 cl.setPivotX(cl.getMeasuredWidth() * (index == 0 ? 0.75f : 0.25f)); 1188 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1189 cl.setRotationY(rotation); 1190 cl.setOverscrollTransformsDirty(true); 1191 setFadeForOverScroll(Math.abs(scrollProgress)); 1192 } else { 1193 if (mOverscrollFade != 0) { 1194 setFadeForOverScroll(0); 1195 } 1196 // We don't want to mess with the translations during transitions 1197 if (!isSwitchingState()) { 1198 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1199 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1200 } 1201 } 1202 } 1203 1204 @Override 1205 protected void screenScrolled(int screenCenter) { 1206 if (LauncherApplication.isScreenLarge()) { 1207 // We don't call super.screenScrolled() here because we handle the adjacent pages alpha 1208 // ourselves (for efficiency), and there are no scrolling indicators to update. 1209 screenScrolledLargeUI(screenCenter); 1210 } else { 1211 super.screenScrolled(screenCenter); 1212 screenScrolledStandardUI(screenCenter); 1213 } 1214 } 1215 1216 @Override 1217 protected void overScroll(float amount) { 1218 if (LauncherApplication.isScreenLarge()) { 1219 dampedOverScroll(amount); 1220 } else { 1221 acceleratedOverScroll(amount); 1222 } 1223 } 1224 1225 protected void onAttachedToWindow() { 1226 super.onAttachedToWindow(); 1227 mWindowToken = getWindowToken(); 1228 computeScroll(); 1229 mDragController.setWindowToken(mWindowToken); 1230 } 1231 1232 protected void onDetachedFromWindow() { 1233 mWindowToken = null; 1234 } 1235 1236 @Override 1237 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1238 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1239 mUpdateWallpaperOffsetImmediately = true; 1240 } 1241 super.onLayout(changed, left, top, right, bottom); 1242 } 1243 1244 @Override 1245 protected void onDraw(Canvas canvas) { 1246 updateWallpaperOffsets(); 1247 1248 // Draw the background gradient if necessary 1249 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1250 int alpha = (int) (mBackgroundAlpha * 255); 1251 mBackground.setAlpha(alpha); 1252 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1253 getMeasuredHeight()); 1254 mBackground.draw(canvas); 1255 } 1256 1257 super.onDraw(canvas); 1258 } 1259 1260 boolean isDrawingBackgroundGradient() { 1261 return (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground); 1262 } 1263 1264 @Override 1265 protected void dispatchDraw(Canvas canvas) { 1266 super.dispatchDraw(canvas); 1267 1268 if (mInScrollArea && !LauncherApplication.isScreenLarge()) { 1269 final int width = getWidth(); 1270 final int height = getHeight(); 1271 final int pageHeight = getChildAt(0).getHeight(); 1272 1273 // Set the height of the outline to be the height of the page 1274 final int offset = (height - pageHeight - mPaddingTop - mPaddingBottom) / 2; 1275 final int paddingTop = mPaddingTop + offset; 1276 final int paddingBottom = mPaddingBottom + offset; 1277 1278 final int page = (mNextPage != INVALID_PAGE ? mNextPage : mCurrentPage); 1279 final CellLayout leftPage = (CellLayout) getChildAt(page - 1); 1280 final CellLayout rightPage = (CellLayout) getChildAt(page + 1); 1281 1282 if (leftPage != null && leftPage.getIsDragOverlapping()) { 1283 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left_holo); 1284 d.setBounds(mScrollX, paddingTop, mScrollX + d.getIntrinsicWidth(), 1285 height - paddingBottom); 1286 d.draw(canvas); 1287 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 1288 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right_holo); 1289 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), paddingTop, mScrollX + width, 1290 height - paddingBottom); 1291 d.draw(canvas); 1292 } 1293 } 1294 } 1295 1296 @Override 1297 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1298 if (!mLauncher.isAllAppsVisible()) { 1299 final Folder openFolder = getOpenFolder(); 1300 if (openFolder != null) { 1301 return openFolder.requestFocus(direction, previouslyFocusedRect); 1302 } else { 1303 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1304 } 1305 } 1306 return false; 1307 } 1308 1309 @Override 1310 public int getDescendantFocusability() { 1311 if (isSmall()) { 1312 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1313 } 1314 return super.getDescendantFocusability(); 1315 } 1316 1317 @Override 1318 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1319 if (!mLauncher.isAllAppsVisible()) { 1320 final Folder openFolder = getOpenFolder(); 1321 if (openFolder != null) { 1322 openFolder.addFocusables(views, direction); 1323 } else { 1324 super.addFocusables(views, direction, focusableMode); 1325 } 1326 } 1327 } 1328 1329 public boolean isSmall() { 1330 return mState == State.SMALL || mState == State.SPRING_LOADED; 1331 } 1332 1333 void enableChildrenCache(int fromPage, int toPage) { 1334 if (fromPage > toPage) { 1335 final int temp = fromPage; 1336 fromPage = toPage; 1337 toPage = temp; 1338 } 1339 1340 final int screenCount = getChildCount(); 1341 1342 fromPage = Math.max(fromPage, 0); 1343 toPage = Math.min(toPage, screenCount - 1); 1344 1345 for (int i = fromPage; i <= toPage; i++) { 1346 final CellLayout layout = (CellLayout) getChildAt(i); 1347 layout.setChildrenDrawnWithCacheEnabled(true); 1348 layout.setChildrenDrawingCacheEnabled(true); 1349 } 1350 } 1351 1352 void clearChildrenCache() { 1353 final int screenCount = getChildCount(); 1354 for (int i = 0; i < screenCount; i++) { 1355 final CellLayout layout = (CellLayout) getChildAt(i); 1356 layout.setChildrenDrawnWithCacheEnabled(false); 1357 // In software mode, we don't want the items to continue to be drawn into bitmaps 1358 if (!isHardwareAccelerated()) { 1359 layout.setChildrenDrawingCacheEnabled(false); 1360 } 1361 } 1362 } 1363 1364 private void updateChildrenLayersEnabled() { 1365 boolean small = isSmall() || mIsSwitchingState; 1366 boolean dragging = mAnimatingViewIntoPlace || mIsDragOccuring; 1367 boolean enableChildrenLayers = small || dragging || isPageMoving(); 1368 1369 if (enableChildrenLayers != mChildrenLayersEnabled) { 1370 mChildrenLayersEnabled = enableChildrenLayers; 1371 for (int i = 0; i < getPageCount(); i++) { 1372 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(mChildrenLayersEnabled); 1373 } 1374 } 1375 } 1376 1377 protected void onWallpaperTap(MotionEvent ev) { 1378 final int[] position = mTempCell; 1379 getLocationOnScreen(position); 1380 1381 int pointerIndex = ev.getActionIndex(); 1382 position[0] += (int) ev.getX(pointerIndex); 1383 position[1] += (int) ev.getY(pointerIndex); 1384 1385 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1386 ev.getAction() == MotionEvent.ACTION_UP 1387 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1388 position[0], position[1], 0, null); 1389 } 1390 1391 /* 1392 * This interpolator emulates the rate at which the perceived scale of an object changes 1393 * as its distance from a camera increases. When this interpolator is applied to a scale 1394 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1395 * from the camera. 1396 */ 1397 static class ZInterpolator implements TimeInterpolator { 1398 private float focalLength; 1399 1400 public ZInterpolator(float foc) { 1401 focalLength = foc; 1402 } 1403 1404 public float getInterpolation(float input) { 1405 return (1.0f - focalLength / (focalLength + input)) / 1406 (1.0f - focalLength / (focalLength + 1.0f)); 1407 } 1408 } 1409 1410 /* 1411 * The exact reverse of ZInterpolator. 1412 */ 1413 static class InverseZInterpolator implements TimeInterpolator { 1414 private ZInterpolator zInterpolator; 1415 public InverseZInterpolator(float foc) { 1416 zInterpolator = new ZInterpolator(foc); 1417 } 1418 public float getInterpolation(float input) { 1419 return 1 - zInterpolator.getInterpolation(1 - input); 1420 } 1421 } 1422 1423 /* 1424 * ZInterpolator compounded with an ease-out. 1425 */ 1426 static class ZoomOutInterpolator implements TimeInterpolator { 1427 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(0.75f); 1428 private final ZInterpolator zInterpolator = new ZInterpolator(0.13f); 1429 1430 public float getInterpolation(float input) { 1431 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1432 } 1433 } 1434 1435 /* 1436 * InvereZInterpolator compounded with an ease-out. 1437 */ 1438 static class ZoomInInterpolator implements TimeInterpolator { 1439 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1440 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1441 1442 public float getInterpolation(float input) { 1443 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1444 } 1445 } 1446 1447 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1448 1449 /* 1450 * 1451 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1452 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1453 * 1454 * These methods mark the appropriate pages as accepting drops (which alters their visual 1455 * appearance). 1456 * 1457 */ 1458 public void onDragStartedWithItem(View v) { 1459 final Canvas canvas = new Canvas(); 1460 1461 // We need to add extra padding to the bitmap to make room for the glow effect 1462 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1463 1464 // The outline is used to visualize where the item will land if dropped 1465 mDragOutline = createDragOutline(v, canvas, bitmapPadding); 1466 } 1467 1468 public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, Paint alphaClipPaint) { 1469 final Canvas canvas = new Canvas(); 1470 1471 // We need to add extra padding to the bitmap to make room for the glow effect 1472 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1473 1474 int[] size = estimateItemSize(info.spanX, info.spanY, info, false); 1475 1476 // The outline is used to visualize where the item will land if dropped 1477 mDragOutline = createDragOutline(b, canvas, bitmapPadding, size[0], size[1], alphaClipPaint); 1478 } 1479 1480 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1481 // never dragged over 1482 public void onDragStopped(boolean success) { 1483 // In the success case, DragController has already called onDragExit() 1484 if (!success) { 1485 doDragExit(null); 1486 } 1487 } 1488 1489 public void exitWidgetResizeMode() { 1490 DragLayer dragLayer = mLauncher.getDragLayer(); 1491 dragLayer.clearAllResizeFrames(); 1492 } 1493 1494 private void initAnimationArrays() { 1495 final int childCount = getChildCount(); 1496 if (mOldTranslationXs != null) return; 1497 mOldTranslationXs = new float[childCount]; 1498 mOldTranslationYs = new float[childCount]; 1499 mOldScaleXs = new float[childCount]; 1500 mOldScaleYs = new float[childCount]; 1501 mOldBackgroundAlphas = new float[childCount]; 1502 mOldBackgroundAlphaMultipliers = new float[childCount]; 1503 mOldAlphas = new float[childCount]; 1504 mOldRotationYs = new float[childCount]; 1505 mNewTranslationXs = new float[childCount]; 1506 mNewTranslationYs = new float[childCount]; 1507 mNewScaleXs = new float[childCount]; 1508 mNewScaleYs = new float[childCount]; 1509 mNewBackgroundAlphas = new float[childCount]; 1510 mNewBackgroundAlphaMultipliers = new float[childCount]; 1511 mNewAlphas = new float[childCount]; 1512 mNewRotationYs = new float[childCount]; 1513 } 1514 1515 Animator getChangeStateAnimation(final State state, boolean animated) { 1516 return getChangeStateAnimation(state, animated, 0); 1517 } 1518 1519 Animator getChangeStateAnimation(final State state, boolean animated, int delay) { 1520 if (mState == state) { 1521 return null; 1522 } 1523 1524 // Initialize animation arrays for the first time if necessary 1525 initAnimationArrays(); 1526 1527 AnimatorSet anim = animated ? new AnimatorSet() : null; 1528 1529 // Stop any scrolling, move to the current page right away 1530 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1531 1532 final State oldState = mState; 1533 final boolean oldStateIsNormal = (oldState == State.NORMAL); 1534 final boolean oldStateIsSmall = (oldState == State.SMALL); 1535 mState = state; 1536 final boolean stateIsNormal = (state == State.NORMAL); 1537 final boolean stateIsSpringLoaded = (state == State.SPRING_LOADED); 1538 final boolean stateIsSmall = (state == State.SMALL); 1539 float finalScaleFactor = 1.0f; 1540 float finalBackgroundAlpha = stateIsSpringLoaded ? 1.0f : 0f; 1541 float translationX = 0; 1542 float translationY = 0; 1543 boolean zoomIn = true; 1544 1545 if (state != State.NORMAL) { 1546 finalScaleFactor = mSpringLoadedShrinkFactor - (stateIsSmall ? 0.1f : 0); 1547 if (oldStateIsNormal && stateIsSmall) { 1548 zoomIn = false; 1549 setLayoutScale(finalScaleFactor); 1550 updateChildrenLayersEnabled(); 1551 } else { 1552 finalBackgroundAlpha = 1.0f; 1553 setLayoutScale(finalScaleFactor); 1554 } 1555 } else { 1556 setLayoutScale(1.0f); 1557 } 1558 1559 final int duration = zoomIn ? 1560 getResources().getInteger(R.integer.config_workspaceUnshrinkTime) : 1561 getResources().getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1562 for (int i = 0; i < getChildCount(); i++) { 1563 final CellLayout cl = (CellLayout) getChildAt(i); 1564 float rotation = 0f; 1565 float initialAlpha = cl.getAlpha(); 1566 float finalAlphaMultiplierValue = 1f; 1567 float finalAlpha = (!mFadeInAdjacentScreens || stateIsSpringLoaded || 1568 (i == mCurrentPage)) ? 1f : 0f; 1569 1570 // Determine the pages alpha during the state transition 1571 if ((oldStateIsSmall && stateIsNormal) || 1572 (oldStateIsNormal && stateIsSmall)) { 1573 // To/from workspace - only show the current page unless the transition is not 1574 // animated and the animation end callback below doesn't run 1575 if (i == mCurrentPage || !animated) { 1576 finalAlpha = 1f; 1577 finalAlphaMultiplierValue = 0f; 1578 } else { 1579 initialAlpha = 0f; 1580 finalAlpha = 0f; 1581 } 1582 } 1583 1584 // Update the rotation of the screen (don't apply rotation on Phone UI) 1585 if (LauncherApplication.isScreenLarge()) { 1586 if (i < mCurrentPage) { 1587 rotation = WORKSPACE_ROTATION; 1588 } else if (i > mCurrentPage) { 1589 rotation = -WORKSPACE_ROTATION; 1590 } 1591 } 1592 1593 // If the screen is not xlarge, then don't rotate the CellLayouts 1594 // NOTE: If we don't update the side pages alpha, then we should not hide the side 1595 // pages. see unshrink(). 1596 if (LauncherApplication.isScreenLarge()) { 1597 translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1598 } 1599 1600 mOldAlphas[i] = initialAlpha; 1601 mNewAlphas[i] = finalAlpha; 1602 if (animated) { 1603 mOldTranslationXs[i] = cl.getTranslationX(); 1604 mOldTranslationYs[i] = cl.getTranslationY(); 1605 mOldScaleXs[i] = cl.getScaleX(); 1606 mOldScaleYs[i] = cl.getScaleY(); 1607 mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1608 mOldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1609 mOldRotationYs[i] = cl.getRotationY(); 1610 1611 mNewTranslationXs[i] = translationX; 1612 mNewTranslationYs[i] = translationY; 1613 mNewScaleXs[i] = finalScaleFactor; 1614 mNewScaleYs[i] = finalScaleFactor; 1615 mNewBackgroundAlphas[i] = finalBackgroundAlpha; 1616 mNewBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1617 mNewRotationYs[i] = rotation; 1618 } else { 1619 cl.setTranslationX(translationX); 1620 cl.setTranslationY(translationY); 1621 cl.setScaleX(finalScaleFactor); 1622 cl.setScaleY(finalScaleFactor); 1623 cl.setBackgroundAlpha(finalBackgroundAlpha); 1624 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1625 cl.setAlpha(finalAlpha); 1626 cl.setRotationY(rotation); 1627 } 1628 } 1629 1630 if (animated) { 1631 for (int index = 0; index < getChildCount(); index++) { 1632 final int i = index; 1633 final CellLayout cl = (CellLayout) getChildAt(i); 1634 if (mOldAlphas[i] == 0 && mNewAlphas[i] == 0) { 1635 cl.setTranslationX(mNewTranslationXs[i]); 1636 cl.setTranslationY(mNewTranslationYs[i]); 1637 cl.setScaleX(mNewScaleXs[i]); 1638 cl.setScaleY(mNewScaleYs[i]); 1639 cl.setBackgroundAlpha(mNewBackgroundAlphas[i]); 1640 cl.setBackgroundAlphaMultiplier(mNewBackgroundAlphaMultipliers[i]); 1641 cl.setAlpha(mNewAlphas[i]); 1642 cl.setRotationY(mNewRotationYs[i]); 1643 } else { 1644 LauncherViewPropertyAnimator a = new LauncherViewPropertyAnimator(cl); 1645 a.translationX(mNewTranslationXs[i]) 1646 .translationY(mNewTranslationYs[i]) 1647 .scaleX(mNewScaleXs[i]) 1648 .scaleY(mNewScaleYs[i]) 1649 .setDuration(duration) 1650 .setInterpolator(mZoomInInterpolator); 1651 if (mOldAlphas[i] != mNewAlphas[i]) { 1652 a.alpha(mNewAlphas[i]); 1653 } 1654 anim.play(a); 1655 if (mOldRotationYs[i] != 0 || mNewRotationYs[i] != 0) { 1656 ValueAnimator rotate = ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1657 rotate.setInterpolator(new DecelerateInterpolator(2.0f)); 1658 rotate.addUpdateListener(new LauncherAnimatorUpdateListener() { 1659 public void onAnimationUpdate(float a, float b) { 1660 cl.setRotationY(a * mOldRotationYs[i] + b * mNewRotationYs[i]); 1661 } 1662 }); 1663 anim.play(rotate); 1664 } 1665 if (mOldBackgroundAlphas[i] != 0 || 1666 mNewBackgroundAlphas[i] != 0 || 1667 mOldBackgroundAlphaMultipliers[i] != 0 || 1668 mNewBackgroundAlphaMultipliers[i] != 0) { 1669 ValueAnimator bgAnim = ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1670 bgAnim.setInterpolator(mZoomInInterpolator); 1671 bgAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1672 public void onAnimationUpdate(float a, float b) { 1673 cl.setBackgroundAlpha( 1674 a * mOldBackgroundAlphas[i] + 1675 b * mNewBackgroundAlphas[i]); 1676 cl.setBackgroundAlphaMultiplier( 1677 a * mOldBackgroundAlphaMultipliers[i] + 1678 b * mNewBackgroundAlphaMultipliers[i]); 1679 } 1680 }); 1681 anim.play(bgAnim); 1682 } 1683 } 1684 } 1685 anim.setStartDelay(delay); 1686 } 1687 1688 if (stateIsSpringLoaded) { 1689 // Right now we're covered by Apps Customize 1690 // Show the background gradient immediately, so the gradient will 1691 // be showing once AppsCustomize disappears 1692 animateBackgroundGradient(getResources().getInteger( 1693 R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, false); 1694 } else { 1695 // Fade the background gradient away 1696 animateBackgroundGradient(0f, true); 1697 } 1698 return anim; 1699 } 1700 1701 @Override 1702 public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) { 1703 mIsSwitchingState = true; 1704 } 1705 1706 @Override 1707 public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) { 1708 mIsSwitchingState = false; 1709 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 1710 updateChildrenLayersEnabled(); 1711 // The code in getChangeStateAnimation to determine initialAlpha and finalAlpha will ensure 1712 // ensure that only the current page is visible during (and subsequently, after) the 1713 // transition animation. If fade adjacent pages is disabled, then re-enable the page 1714 // visibility after the transition animation. 1715 if (!mFadeInAdjacentScreens) { 1716 for (int i = 0; i < getChildCount(); i++) { 1717 final CellLayout cl = (CellLayout) getChildAt(i); 1718 cl.setAlpha(1f); 1719 } 1720 } 1721 } 1722 1723 @Override 1724 public View getContent() { 1725 return this; 1726 } 1727 1728 /** 1729 * Draw the View v into the given Canvas. 1730 * 1731 * @param v the view to draw 1732 * @param destCanvas the canvas to draw on 1733 * @param padding the horizontal and vertical padding to use when drawing 1734 */ 1735 private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { 1736 final Rect clipRect = mTempRect; 1737 v.getDrawingRect(clipRect); 1738 1739 boolean textVisible = false; 1740 1741 destCanvas.save(); 1742 if (v instanceof TextView && pruneToDrawable) { 1743 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1744 clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); 1745 destCanvas.translate(padding / 2, padding / 2); 1746 d.draw(destCanvas); 1747 } else { 1748 if (v instanceof FolderIcon) { 1749 // For FolderIcons the text can bleed into the icon area, and so we need to 1750 // hide the text completely (which can't be achieved by clipping). 1751 if (((FolderIcon) v).getTextVisible()) { 1752 ((FolderIcon) v).setTextVisible(false); 1753 textVisible = true; 1754 } 1755 } else if (v instanceof BubbleTextView) { 1756 final BubbleTextView tv = (BubbleTextView) v; 1757 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1758 tv.getLayout().getLineTop(0); 1759 } else if (v instanceof TextView) { 1760 final TextView tv = (TextView) v; 1761 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1762 tv.getLayout().getLineTop(0); 1763 } 1764 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1765 destCanvas.clipRect(clipRect, Op.REPLACE); 1766 v.draw(destCanvas); 1767 1768 // Restore text visibility of FolderIcon if necessary 1769 if (textVisible) { 1770 ((FolderIcon) v).setTextVisible(true); 1771 } 1772 } 1773 destCanvas.restore(); 1774 } 1775 1776 /** 1777 * Returns a new bitmap to show when the given View is being dragged around. 1778 * Responsibility for the bitmap is transferred to the caller. 1779 */ 1780 public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1781 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1782 Bitmap b; 1783 1784 if (v instanceof TextView) { 1785 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1786 b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, 1787 d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); 1788 } else { 1789 b = Bitmap.createBitmap( 1790 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1791 } 1792 1793 canvas.setBitmap(b); 1794 drawDragView(v, canvas, padding, true); 1795 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 1796 canvas.drawColor(mDragViewMultiplyColor, PorterDuff.Mode.MULTIPLY); 1797 canvas.setBitmap(null); 1798 1799 return b; 1800 } 1801 1802 /** 1803 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1804 * Responsibility for the bitmap is transferred to the caller. 1805 */ 1806 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1807 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1808 final Bitmap b = Bitmap.createBitmap( 1809 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1810 1811 canvas.setBitmap(b); 1812 drawDragView(v, canvas, padding, true); 1813 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1814 canvas.setBitmap(null); 1815 return b; 1816 } 1817 1818 /** 1819 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1820 * Responsibility for the bitmap is transferred to the caller. 1821 */ 1822 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h, 1823 Paint alphaClipPaint) { 1824 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1825 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1826 canvas.setBitmap(b); 1827 1828 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 1829 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 1830 (h - padding) / (float) orig.getHeight()); 1831 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 1832 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 1833 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 1834 1835 // center the image 1836 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 1837 1838 canvas.drawBitmap(orig, src, dst, null); 1839 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor, 1840 alphaClipPaint); 1841 canvas.setBitmap(null); 1842 1843 return b; 1844 } 1845 1846 /** 1847 * Creates a drag outline to represent a drop (that we don't have the actual information for 1848 * yet). May be changed in the future to alter the drop outline slightly depending on the 1849 * clip description mime data. 1850 */ 1851 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 1852 Resources r = getResources(); 1853 final int outlineColor = r.getColor(android.R.color.holo_blue_light); 1854 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 1855 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 1856 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 1857 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 1858 final Bitmap b = Bitmap.createBitmap( 1859 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 1860 1861 canvas.setBitmap(b); 1862 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 1863 rectRadius, rectRadius, mExternalDragOutlinePaint); 1864 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1865 canvas.setBitmap(null); 1866 return b; 1867 } 1868 1869 void startDrag(CellLayout.CellInfo cellInfo) { 1870 View child = cellInfo.cell; 1871 1872 // Make sure the drag was started by a long press as opposed to a long click. 1873 if (!child.isInTouchMode()) { 1874 return; 1875 } 1876 1877 mDragInfo = cellInfo; 1878 child.setVisibility(GONE); 1879 1880 child.clearFocus(); 1881 child.setPressed(false); 1882 1883 final Canvas canvas = new Canvas(); 1884 1885 // We need to add extra padding to the bitmap to make room for the glow effect 1886 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1887 1888 // The outline is used to visualize where the item will land if dropped 1889 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 1890 beginDragShared(child, this); 1891 } 1892 1893 public void beginDragShared(View child, DragSource source) { 1894 Resources r = getResources(); 1895 1896 // We need to add extra padding to the bitmap to make room for the glow effect 1897 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1898 1899 // The drag bitmap follows the touch point around on the screen 1900 final Bitmap b = createDragBitmap(child, new Canvas(), bitmapPadding); 1901 1902 final int bmpWidth = b.getWidth(); 1903 1904 mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 1905 final int dragLayerX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 1906 int dragLayerY = mTempXY[1] - bitmapPadding / 2; 1907 1908 Point dragVisualizeOffset = null; 1909 Rect dragRect = null; 1910 if (child instanceof BubbleTextView || child instanceof PagedViewIcon) { 1911 int iconSize = r.getDimensionPixelSize(R.dimen.app_icon_size); 1912 int iconPaddingTop = r.getDimensionPixelSize(R.dimen.app_icon_padding_top); 1913 int top = child.getPaddingTop(); 1914 int left = (bmpWidth - iconSize) / 2; 1915 int right = left + iconSize; 1916 int bottom = top + iconSize; 1917 dragLayerY += top; 1918 // Note: The drag region is used to calculate drag layer offsets, but the 1919 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 1920 dragVisualizeOffset = new Point(-bitmapPadding / 2, iconPaddingTop - bitmapPadding / 2); 1921 dragRect = new Rect(left, top, right, bottom); 1922 } else if (child instanceof FolderIcon) { 1923 int previewSize = r.getDimensionPixelSize(R.dimen.folder_preview_size); 1924 dragRect = new Rect(0, 0, child.getWidth(), previewSize); 1925 } 1926 1927 // Clear the pressed state if necessary 1928 if (child instanceof BubbleTextView) { 1929 BubbleTextView icon = (BubbleTextView) child; 1930 icon.clearPressedOrFocusedBackground(); 1931 } 1932 1933 mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 1934 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect); 1935 b.recycle(); 1936 1937 // Show the scrolling indicator when you pick up an item 1938 showScrollingIndicator(false); 1939 } 1940 1941 void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, int screen, 1942 int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { 1943 View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); 1944 1945 final int[] cellXY = new int[2]; 1946 target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1947 addInScreen(view, container, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1948 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, cellXY[0], 1949 cellXY[1]); 1950 } 1951 1952 public boolean transitionStateShouldAllowDrop() { 1953 return ((!isSwitchingState() || mTransitionProgress > 0.5f) && mState != State.SMALL); 1954 } 1955 1956 /** 1957 * {@inheritDoc} 1958 */ 1959 public boolean acceptDrop(DragObject d) { 1960 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1961 if (d.dragSource != this) { 1962 // Don't accept the drop if we're not over a screen at time of drop 1963 if (mDragTargetLayout == null) { 1964 return false; 1965 } 1966 if (!transitionStateShouldAllowDrop()) return false; 1967 1968 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 1969 d.dragView, mDragViewVisualCenter); 1970 1971 // We want the point to be mapped to the dragTarget. 1972 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 1973 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 1974 } else { 1975 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 1976 } 1977 1978 int spanX = 1; 1979 int spanY = 1; 1980 View ignoreView = null; 1981 if (mDragInfo != null) { 1982 final CellLayout.CellInfo dragCellInfo = mDragInfo; 1983 spanX = dragCellInfo.spanX; 1984 spanY = dragCellInfo.spanY; 1985 ignoreView = dragCellInfo.cell; 1986 } else { 1987 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 1988 spanX = dragInfo.spanX; 1989 spanY = dragInfo.spanY; 1990 } 1991 1992 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 1993 (int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell); 1994 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, true)) { 1995 return true; 1996 } 1997 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, 1998 mTargetCell)) { 1999 return true; 2000 } 2001 2002 // Don't accept the drop if there's no room for the item 2003 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 2004 // Don't show the message if we are dropping on the AllApps button and the hotseat 2005 // is full 2006 if (mTargetCell != null && mLauncher.isHotseatLayout(mDragTargetLayout)) { 2007 Hotseat hotseat = mLauncher.getHotseat(); 2008 if (Hotseat.isAllAppsButtonRank( 2009 hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { 2010 return false; 2011 } 2012 } 2013 2014 mLauncher.showOutOfSpaceMessage(); 2015 return false; 2016 } 2017 } 2018 return true; 2019 } 2020 2021 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, 2022 boolean considerTimeout) { 2023 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2024 2025 boolean hasntMoved = false; 2026 if (mDragInfo != null) { 2027 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2028 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2029 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2030 } 2031 2032 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2033 return false; 2034 } 2035 2036 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2037 boolean willBecomeShortcut = 2038 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2039 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2040 2041 return (aboveShortcut && willBecomeShortcut); 2042 } 2043 2044 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell) { 2045 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2046 if (dropOverView instanceof FolderIcon) { 2047 FolderIcon fi = (FolderIcon) dropOverView; 2048 if (fi.acceptDrop(dragInfo)) { 2049 return true; 2050 } 2051 } 2052 return false; 2053 } 2054 2055 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2056 int[] targetCell, boolean external, DragView dragView, Runnable postAnimationRunnable) { 2057 View v = target.getChildAt(targetCell[0], targetCell[1]); 2058 boolean hasntMoved = false; 2059 if (mDragInfo != null) { 2060 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2061 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2062 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2063 } 2064 2065 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2066 mCreateUserFolderOnDrop = false; 2067 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 2068 2069 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2070 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2071 2072 if (aboveShortcut && willBecomeShortcut) { 2073 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2074 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2075 // if the drag started here, we need to remove it from the workspace 2076 if (!external) { 2077 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2078 } 2079 2080 Rect folderLocation = new Rect(); 2081 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2082 target.removeView(v); 2083 2084 FolderIcon fi = 2085 mLauncher.addFolder(target, container, screen, targetCell[0], targetCell[1]); 2086 destInfo.cellX = -1; 2087 destInfo.cellY = -1; 2088 sourceInfo.cellX = -1; 2089 sourceInfo.cellY = -1; 2090 2091 // If the dragView is null, we can't animate 2092 boolean animate = dragView != null; 2093 if (animate) { 2094 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2095 postAnimationRunnable); 2096 } else { 2097 fi.addItem(destInfo); 2098 fi.addItem(sourceInfo); 2099 } 2100 return true; 2101 } 2102 return false; 2103 } 2104 2105 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2106 DragObject d, boolean external) { 2107 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2108 if (dropOverView instanceof FolderIcon) { 2109 FolderIcon fi = (FolderIcon) dropOverView; 2110 if (fi.acceptDrop(d.dragInfo)) { 2111 fi.onDrop(d); 2112 2113 // if the drag started here, we need to remove it from the workspace 2114 if (!external) { 2115 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2116 } 2117 return true; 2118 } 2119 } 2120 return false; 2121 } 2122 2123 public void onDrop(DragObject d) { 2124 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2125 mDragViewVisualCenter); 2126 2127 // We want the point to be mapped to the dragTarget. 2128 if (mDragTargetLayout != null) { 2129 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2130 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2131 } else { 2132 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2133 } 2134 } 2135 2136 CellLayout dropTargetLayout = mDragTargetLayout; 2137 2138 int snapScreen = -1; 2139 if (d.dragSource != this) { 2140 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2141 (int) mDragViewVisualCenter[1] }; 2142 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2143 } else if (mDragInfo != null) { 2144 final View cell = mDragInfo.cell; 2145 2146 if (dropTargetLayout != null) { 2147 // Move internally 2148 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2149 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2150 long container = hasMovedIntoHotseat ? 2151 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2152 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2153 int screen = (mTargetCell[0] < 0) ? 2154 mDragInfo.screen : indexOfChild(dropTargetLayout); 2155 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2156 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2157 // First we find the cell nearest to point at which the item is 2158 // dropped, without any consideration to whether there is an item there. 2159 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2160 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2161 // If the item being dropped is a shortcut and the nearest drop 2162 // cell also contains a shortcut, then create a folder with the two shortcuts. 2163 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2164 dropTargetLayout, mTargetCell, false, d.dragView, null)) { 2165 return; 2166 } 2167 2168 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, d, false)) { 2169 return; 2170 } 2171 2172 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2173 // we need to find the nearest cell location that is vacant 2174 mTargetCell = findNearestVacantArea((int) mDragViewVisualCenter[0], 2175 (int) mDragViewVisualCenter[1], mDragInfo.spanX, mDragInfo.spanY, cell, 2176 dropTargetLayout, mTargetCell); 2177 2178 if (mCurrentPage != screen && !hasMovedIntoHotseat) { 2179 snapScreen = screen; 2180 snapToPage(screen); 2181 } 2182 2183 if (mTargetCell[0] >= 0 && mTargetCell[1] >= 0) { 2184 if (hasMovedLayouts) { 2185 // Reparent the view 2186 getParentCellLayoutForView(cell).removeView(cell); 2187 addInScreen(cell, container, screen, mTargetCell[0], mTargetCell[1], 2188 mDragInfo.spanX, mDragInfo.spanY); 2189 } 2190 2191 // update the item's position after drop 2192 final ItemInfo info = (ItemInfo) cell.getTag(); 2193 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2194 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 2195 lp.cellX = mTargetCell[0]; 2196 lp.cellY = mTargetCell[1]; 2197 cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screen, 2198 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2199 2200 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2201 cell instanceof LauncherAppWidgetHostView) { 2202 final CellLayout cellLayout = dropTargetLayout; 2203 // We post this call so that the widget has a chance to be placed 2204 // in its final location 2205 2206 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2207 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2208 if (pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2209 final Runnable resizeRunnable = new Runnable() { 2210 public void run() { 2211 DragLayer dragLayer = mLauncher.getDragLayer(); 2212 dragLayer.addResizeFrame(info, hostView, cellLayout); 2213 } 2214 }; 2215 post(new Runnable() { 2216 public void run() { 2217 if (!isPageMoving()) { 2218 resizeRunnable.run(); 2219 } else { 2220 mDelayedResizeRunnable = resizeRunnable; 2221 } 2222 } 2223 }); 2224 } 2225 } 2226 2227 LauncherModel.moveItemInDatabase(mLauncher, info, container, screen, lp.cellX, 2228 lp.cellY); 2229 } 2230 } 2231 2232 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2233 2234 // Prepare it to be animated into its new position 2235 // This must be called after the view has been re-parented 2236 final Runnable disableHardwareLayersRunnable = new Runnable() { 2237 @Override 2238 public void run() { 2239 mAnimatingViewIntoPlace = false; 2240 updateChildrenLayersEnabled(); 2241 } 2242 }; 2243 mAnimatingViewIntoPlace = true; 2244 if (d.dragView.hasDrawn()) { 2245 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2246 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2247 disableHardwareLayersRunnable, this); 2248 } else { 2249 cell.setVisibility(VISIBLE); 2250 } 2251 parent.onDropChild(cell); 2252 } 2253 } 2254 2255 public void setFinalScrollForPageChange(int screen) { 2256 if (screen >= 0) { 2257 mSavedScrollX = getScrollX(); 2258 CellLayout cl = (CellLayout) getChildAt(screen); 2259 mSavedTranslationX = cl.getTranslationX(); 2260 mSavedRotationY = cl.getRotationY(); 2261 final int newX = getChildOffset(screen) - getRelativeChildOffset(screen); 2262 setScrollX(newX); 2263 cl.setTranslationX(0f); 2264 cl.setRotationY(0f); 2265 } 2266 } 2267 2268 public void resetFinalScrollForPageChange(int screen) { 2269 if (screen >= 0) { 2270 CellLayout cl = (CellLayout) getChildAt(screen); 2271 setScrollX(mSavedScrollX); 2272 cl.setTranslationX(mSavedTranslationX); 2273 cl.setRotationY(mSavedRotationY); 2274 } 2275 } 2276 2277 public void getViewLocationRelativeToSelf(View v, int[] location) { 2278 getLocationInWindow(location); 2279 int x = location[0]; 2280 int y = location[1]; 2281 2282 v.getLocationInWindow(location); 2283 int vX = location[0]; 2284 int vY = location[1]; 2285 2286 location[0] = vX - x; 2287 location[1] = vY - y; 2288 } 2289 2290 public void onDragEnter(DragObject d) { 2291 mDragHasEnteredWorkspace = true; 2292 if (mDragTargetLayout != null) { 2293 mDragTargetLayout.setIsDragOverlapping(false); 2294 mDragTargetLayout.onDragExit(); 2295 } 2296 mDragTargetLayout = getCurrentDropLayout(); 2297 mDragTargetLayout.setIsDragOverlapping(true); 2298 mDragTargetLayout.onDragEnter(); 2299 2300 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2301 // don't need to show the outlines 2302 if (LauncherApplication.isScreenLarge()) { 2303 showOutlines(); 2304 } 2305 } 2306 2307 private void doDragExit(DragObject d) { 2308 // Clean up folders 2309 cleanupFolderCreation(d); 2310 2311 // Reset the scroll area and previous drag target 2312 onResetScrollArea(); 2313 2314 if (mDragTargetLayout != null) { 2315 mDragTargetLayout.setIsDragOverlapping(false); 2316 mDragTargetLayout.onDragExit(); 2317 } 2318 mLastDragOverView = null; 2319 mSpringLoadedDragController.cancel(); 2320 2321 if (!mIsPageMoving) { 2322 hideOutlines(); 2323 } 2324 } 2325 2326 public void onDragExit(DragObject d) { 2327 mDragHasEnteredWorkspace = false; 2328 doDragExit(d); 2329 } 2330 2331 public DropTarget getDropTargetDelegate(DragObject d) { 2332 return null; 2333 } 2334 2335 /** 2336 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 2337 * in the returned structure related to the widgets that match the drop (or a null list if it is 2338 * a shortcut drop). If the drop is not accepted then a null structure is returned. 2339 */ 2340 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 2341 final LauncherModel model = mLauncher.getModel(); 2342 final ClipDescription desc = event.getClipDescription(); 2343 final int mimeTypeCount = desc.getMimeTypeCount(); 2344 for (int i = 0; i < mimeTypeCount; ++i) { 2345 final String mimeType = desc.getMimeType(i); 2346 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 2347 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 2348 } else { 2349 final List<WidgetMimeTypeHandlerData> widgets = 2350 model.resolveWidgetsForMimeType(mContext, mimeType); 2351 if (widgets.size() > 0) { 2352 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 2353 } 2354 } 2355 } 2356 return null; 2357 } 2358 2359 /** 2360 * Global drag and drop handler 2361 */ 2362 @Override 2363 public boolean onDragEvent(DragEvent event) { 2364 final ClipDescription desc = event.getClipDescription(); 2365 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 2366 final int[] pos = new int[2]; 2367 layout.getLocationOnScreen(pos); 2368 // We need to offset the drag coordinates to layout coordinate space 2369 final int x = (int) event.getX() - pos[0]; 2370 final int y = (int) event.getY() - pos[1]; 2371 2372 switch (event.getAction()) { 2373 case DragEvent.ACTION_DRAG_STARTED: { 2374 // Validate this drag 2375 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2376 if (test != null) { 2377 boolean isShortcut = (test.second == null); 2378 if (isShortcut) { 2379 // Check if we have enough space on this screen to add a new shortcut 2380 if (!layout.findCellForSpan(pos, 1, 1)) { 2381 mLauncher.showOutOfSpaceMessage(); 2382 return false; 2383 } 2384 } 2385 } else { 2386 // Show error message if we couldn't accept any of the items 2387 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 2388 Toast.LENGTH_SHORT).show(); 2389 return false; 2390 } 2391 2392 // Create the drag outline 2393 // We need to add extra padding to the bitmap to make room for the glow effect 2394 final Canvas canvas = new Canvas(); 2395 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2396 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 2397 2398 // Show the current page outlines to indicate that we can accept this drop 2399 showOutlines(); 2400 layout.onDragEnter(); 2401 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1, null, null); 2402 2403 return true; 2404 } 2405 case DragEvent.ACTION_DRAG_LOCATION: 2406 // Visualize the drop location 2407 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1, null, null); 2408 return true; 2409 case DragEvent.ACTION_DROP: { 2410 // Try and add any shortcuts 2411 final LauncherModel model = mLauncher.getModel(); 2412 final ClipData data = event.getClipData(); 2413 2414 // We assume that the mime types are ordered in descending importance of 2415 // representation. So we enumerate the list of mime types and alert the 2416 // user if any widgets can handle the drop. Only the most preferred 2417 // representation will be handled. 2418 pos[0] = x; 2419 pos[1] = y; 2420 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2421 if (test != null) { 2422 final int index = test.first; 2423 final List<WidgetMimeTypeHandlerData> widgets = test.second; 2424 final boolean isShortcut = (widgets == null); 2425 final String mimeType = desc.getMimeType(index); 2426 if (isShortcut) { 2427 final Intent intent = data.getItemAt(index).getIntent(); 2428 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 2429 if (info != null) { 2430 onDropExternal(new int[] { x, y }, info, layout, false); 2431 } 2432 } else { 2433 if (widgets.size() == 1) { 2434 // If there is only one item, then go ahead and add and configure 2435 // that widget 2436 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 2437 final PendingAddWidgetInfo createInfo = 2438 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 2439 mLauncher.addAppWidgetFromDrop(createInfo, 2440 LauncherSettings.Favorites.CONTAINER_DESKTOP, mCurrentPage, null, pos); 2441 } else { 2442 // Show the widget picker dialog if there is more than one widget 2443 // that can handle this data type 2444 final InstallWidgetReceiver.WidgetListAdapter adapter = 2445 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 2446 data, widgets, layout, mCurrentPage, pos); 2447 final AlertDialog.Builder builder = 2448 new AlertDialog.Builder(mContext); 2449 builder.setAdapter(adapter, adapter); 2450 builder.setCancelable(true); 2451 builder.setTitle(mContext.getString( 2452 R.string.external_drop_widget_pick_title)); 2453 builder.setIcon(R.drawable.ic_no_applications); 2454 builder.show(); 2455 } 2456 } 2457 } 2458 return true; 2459 } 2460 case DragEvent.ACTION_DRAG_ENDED: 2461 // Hide the page outlines after the drop 2462 layout.onDragExit(); 2463 hideOutlines(); 2464 return true; 2465 } 2466 return super.onDragEvent(event); 2467 } 2468 2469 /* 2470 * 2471 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2472 * coordinate space. The argument xy is modified with the return result. 2473 * 2474 */ 2475 void mapPointFromSelfToChild(View v, float[] xy) { 2476 mapPointFromSelfToChild(v, xy, null); 2477 } 2478 2479 /* 2480 * 2481 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2482 * coordinate space. The argument xy is modified with the return result. 2483 * 2484 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2485 * computing it itself; we use this to avoid redundant matrix inversions in 2486 * findMatchingPageForDragOver 2487 * 2488 */ 2489 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2490 if (cachedInverseMatrix == null) { 2491 v.getMatrix().invert(mTempInverseMatrix); 2492 cachedInverseMatrix = mTempInverseMatrix; 2493 } 2494 int scrollX = mScrollX; 2495 if (mNextPage != INVALID_PAGE) { 2496 scrollX = mScroller.getFinalX(); 2497 } 2498 xy[0] = xy[0] + scrollX - v.getLeft(); 2499 xy[1] = xy[1] + mScrollY - v.getTop(); 2500 cachedInverseMatrix.mapPoints(xy); 2501 } 2502 2503 /* 2504 * Maps a point from the Workspace's coordinate system to another sibling view's. (Workspace 2505 * covers the full screen) 2506 */ 2507 void mapPointFromSelfToSibling(View v, float[] xy) { 2508 xy[0] = xy[0] - v.getLeft(); 2509 xy[1] = xy[1] - v.getTop(); 2510 } 2511 2512 /* 2513 * 2514 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2515 * the parent View's coordinate space. The argument xy is modified with the return result. 2516 * 2517 */ 2518 void mapPointFromChildToSelf(View v, float[] xy) { 2519 v.getMatrix().mapPoints(xy); 2520 int scrollX = mScrollX; 2521 if (mNextPage != INVALID_PAGE) { 2522 scrollX = mScroller.getFinalX(); 2523 } 2524 xy[0] -= (scrollX - v.getLeft()); 2525 xy[1] -= (mScrollY - v.getTop()); 2526 } 2527 2528 static private float squaredDistance(float[] point1, float[] point2) { 2529 float distanceX = point1[0] - point2[0]; 2530 float distanceY = point2[1] - point2[1]; 2531 return distanceX * distanceX + distanceY * distanceY; 2532 } 2533 2534 /* 2535 * 2536 * Returns true if the passed CellLayout cl overlaps with dragView 2537 * 2538 */ 2539 boolean overlaps(CellLayout cl, DragView dragView, 2540 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2541 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2542 final float[] draggedItemTopLeft = mTempDragCoordinates; 2543 draggedItemTopLeft[0] = dragViewX; 2544 draggedItemTopLeft[1] = dragViewY; 2545 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2546 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2547 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2548 2549 // Transform the dragged item's top left coordinates 2550 // to the CellLayout's local coordinates 2551 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2552 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2553 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2554 2555 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2556 // Transform the dragged item's bottom right coordinates 2557 // to the CellLayout's local coordinates 2558 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2559 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2560 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2561 2562 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2563 float overlap = (overlapRegionRight - overlapRegionLeft) * 2564 (overlapRegionBottom - overlapRegionTop); 2565 if (overlap > 0) { 2566 return true; 2567 } 2568 } 2569 } 2570 return false; 2571 } 2572 2573 /* 2574 * 2575 * This method returns the CellLayout that is currently being dragged to. In order to drag 2576 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2577 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2578 * 2579 * Return null if no CellLayout is currently being dragged over 2580 * 2581 */ 2582 private CellLayout findMatchingPageForDragOver( 2583 DragView dragView, float originX, float originY, boolean exact) { 2584 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2585 // with the item being dragged and then choose the one that's closest to the touch point 2586 final int screenCount = getChildCount(); 2587 CellLayout bestMatchingScreen = null; 2588 float smallestDistSoFar = Float.MAX_VALUE; 2589 2590 for (int i = 0; i < screenCount; i++) { 2591 CellLayout cl = (CellLayout) getChildAt(i); 2592 2593 final float[] touchXy = {originX, originY}; 2594 // Transform the touch coordinates to the CellLayout's local coordinates 2595 // If the touch point is within the bounds of the cell layout, we can return immediately 2596 cl.getMatrix().invert(mTempInverseMatrix); 2597 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2598 2599 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2600 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2601 return cl; 2602 } 2603 2604 if (!exact) { 2605 // Get the center of the cell layout in screen coordinates 2606 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2607 cellLayoutCenter[0] = cl.getWidth()/2; 2608 cellLayoutCenter[1] = cl.getHeight()/2; 2609 mapPointFromChildToSelf(cl, cellLayoutCenter); 2610 2611 touchXy[0] = originX; 2612 touchXy[1] = originY; 2613 2614 // Calculate the distance between the center of the CellLayout 2615 // and the touch point 2616 float dist = squaredDistance(touchXy, cellLayoutCenter); 2617 2618 if (dist < smallestDistSoFar) { 2619 smallestDistSoFar = dist; 2620 bestMatchingScreen = cl; 2621 } 2622 } 2623 } 2624 return bestMatchingScreen; 2625 } 2626 2627 // This is used to compute the visual center of the dragView. This point is then 2628 // used to visualize drop locations and determine where to drop an item. The idea is that 2629 // the visual center represents the user's interpretation of where the item is, and hence 2630 // is the appropriate point to use when determining drop location. 2631 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2632 DragView dragView, float[] recycle) { 2633 float res[]; 2634 if (recycle == null) { 2635 res = new float[2]; 2636 } else { 2637 res = recycle; 2638 } 2639 2640 // First off, the drag view has been shifted in a way that is not represented in the 2641 // x and y values or the x/yOffsets. Here we account for that shift. 2642 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2643 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2644 2645 // These represent the visual top and left of drag view if a dragRect was provided. 2646 // If a dragRect was not provided, then they correspond to the actual view left and 2647 // top, as the dragRect is in that case taken to be the entire dragView. 2648 // R.dimen.dragViewOffsetY. 2649 int left = x - xOffset; 2650 int top = y - yOffset; 2651 2652 // In order to find the visual center, we shift by half the dragRect 2653 res[0] = left + dragView.getDragRegion().width() / 2; 2654 res[1] = top + dragView.getDragRegion().height() / 2; 2655 2656 return res; 2657 } 2658 2659 private boolean isDragWidget(DragObject d) { 2660 return (d.dragInfo instanceof LauncherAppWidgetInfo || 2661 d.dragInfo instanceof PendingAddWidgetInfo); 2662 } 2663 private boolean isExternalDragWidget(DragObject d) { 2664 return d.dragSource != this && isDragWidget(d); 2665 } 2666 2667 public void onDragOver(DragObject d) { 2668 // Skip drag over events while we are dragging over side pages 2669 if (mInScrollArea || mIsSwitchingState || mState == State.SMALL) return; 2670 2671 Rect r = new Rect(); 2672 CellLayout layout = null; 2673 ItemInfo item = (ItemInfo) d.dragInfo; 2674 2675 // Ensure that we have proper spans for the item that we are dropping 2676 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2677 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2678 d.dragView, mDragViewVisualCenter); 2679 2680 // Identify whether we have dragged over a side page 2681 if (isSmall()) { 2682 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 2683 mLauncher.getHotseat().getHitRect(r); 2684 if (r.contains(d.x, d.y)) { 2685 layout = mLauncher.getHotseat().getLayout(); 2686 } 2687 } 2688 if (layout == null) { 2689 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false); 2690 } 2691 if (layout != mDragTargetLayout) { 2692 // Cancel all intermediate folder states 2693 cleanupFolderCreation(d); 2694 2695 if (mDragTargetLayout != null) { 2696 mDragTargetLayout.setIsDragOverlapping(false); 2697 mDragTargetLayout.onDragExit(); 2698 } 2699 mDragTargetLayout = layout; 2700 if (mDragTargetLayout != null) { 2701 mDragTargetLayout.setIsDragOverlapping(true); 2702 mDragTargetLayout.onDragEnter(); 2703 } else { 2704 mLastDragOverView = null; 2705 } 2706 2707 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 2708 if (isInSpringLoadedMode) { 2709 if (mLauncher.isHotseatLayout(layout)) { 2710 mSpringLoadedDragController.cancel(); 2711 } else { 2712 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2713 } 2714 } 2715 } 2716 } else { 2717 // Test to see if we are over the hotseat otherwise just use the current page 2718 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 2719 mLauncher.getHotseat().getHitRect(r); 2720 if (r.contains(d.x, d.y)) { 2721 layout = mLauncher.getHotseat().getLayout(); 2722 } 2723 } 2724 if (layout == null) { 2725 layout = getCurrentDropLayout(); 2726 } 2727 if (layout != mDragTargetLayout) { 2728 if (mDragTargetLayout != null) { 2729 mDragTargetLayout.setIsDragOverlapping(false); 2730 mDragTargetLayout.onDragExit(); 2731 } 2732 mDragTargetLayout = layout; 2733 mDragTargetLayout.setIsDragOverlapping(true); 2734 mDragTargetLayout.onDragEnter(); 2735 } 2736 } 2737 2738 // Handle the drag over 2739 if (mDragTargetLayout != null) { 2740 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2741 2742 // We want the point to be mapped to the dragTarget. 2743 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2744 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2745 } else { 2746 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2747 } 2748 ItemInfo info = (ItemInfo) d.dragInfo; 2749 2750 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2751 (int) mDragViewVisualCenter[1], 1, 1, mDragTargetLayout, mTargetCell); 2752 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2753 mTargetCell[1]); 2754 2755 boolean userFolderPending = willCreateUserFolder(info, mDragTargetLayout, 2756 mTargetCell, false); 2757 boolean isOverFolder = dragOverView instanceof FolderIcon; 2758 if (dragOverView != mLastDragOverView) { 2759 cancelFolderCreation(); 2760 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2761 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2762 } 2763 } 2764 2765 if (userFolderPending && dragOverView != mLastDragOverView) { 2766 mFolderCreationAlarm.setOnAlarmListener(new 2767 FolderCreationAlarmListener(mDragTargetLayout, mTargetCell[0], mTargetCell[1])); 2768 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2769 } 2770 2771 if (dragOverView != mLastDragOverView && isOverFolder) { 2772 ((FolderIcon) dragOverView).onDragEnter(d.dragInfo); 2773 if (mDragTargetLayout != null) { 2774 mDragTargetLayout.clearDragOutlines(); 2775 } 2776 } 2777 mLastDragOverView = dragOverView; 2778 2779 if (!mCreateUserFolderOnDrop && !isOverFolder) { 2780 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2781 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2782 item.spanX, item.spanY, d.dragView.getDragVisualizeOffset(), 2783 d.dragView.getDragRegion()); 2784 } 2785 } 2786 } 2787 2788 private void cleanupFolderCreation(DragObject d) { 2789 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2790 mDragFolderRingAnimator.animateToNaturalState(); 2791 } 2792 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2793 if (d != null) { 2794 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2795 } 2796 } 2797 mFolderCreationAlarm.cancelAlarm(); 2798 } 2799 2800 private void cancelFolderCreation() { 2801 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2802 mDragFolderRingAnimator.animateToNaturalState(); 2803 } 2804 mCreateUserFolderOnDrop = false; 2805 mFolderCreationAlarm.cancelAlarm(); 2806 } 2807 2808 class FolderCreationAlarmListener implements OnAlarmListener { 2809 CellLayout layout; 2810 int cellX; 2811 int cellY; 2812 2813 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 2814 this.layout = layout; 2815 this.cellX = cellX; 2816 this.cellY = cellY; 2817 } 2818 2819 public void onAlarm(Alarm alarm) { 2820 if (mDragFolderRingAnimator == null) { 2821 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 2822 } 2823 mDragFolderRingAnimator.setCell(cellX, cellY); 2824 mDragFolderRingAnimator.setCellLayout(layout); 2825 mDragFolderRingAnimator.animateToAcceptState(); 2826 layout.showFolderAccept(mDragFolderRingAnimator); 2827 layout.clearDragOutlines(); 2828 mCreateUserFolderOnDrop = true; 2829 } 2830 } 2831 2832 @Override 2833 public void getHitRect(Rect outRect) { 2834 // We want the workspace to have the whole area of the display (it will find the correct 2835 // cell layout to drop to in the existing drag/drop logic. 2836 outRect.set(0, 0, mDisplayWidth, mDisplayHeight); 2837 } 2838 2839 /** 2840 * Add the item specified by dragInfo to the given layout. 2841 * @return true if successful 2842 */ 2843 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2844 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2845 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2846 return true; 2847 } 2848 mLauncher.showOutOfSpaceMessage(); 2849 return false; 2850 } 2851 2852 private void onDropExternal(int[] touchXY, Object dragInfo, 2853 CellLayout cellLayout, boolean insertAtFirst) { 2854 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 2855 } 2856 2857 /** 2858 * Drop an item that didn't originate on one of the workspace screens. 2859 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2860 * come from another app altogether. 2861 * 2862 * NOTE: This can also be called when we are outside of a drag event, when we want 2863 * to add an item to one of the workspace screens. 2864 */ 2865 private void onDropExternal(final int[] touchXY, final Object dragInfo, 2866 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 2867 final Runnable exitSpringLoadedRunnable = new Runnable() { 2868 @Override 2869 public void run() { 2870 mLauncher.exitSpringLoadedDragModeDelayed(true, false, null); 2871 } 2872 }; 2873 2874 ItemInfo info = (ItemInfo) dragInfo; 2875 int spanX = info.spanX; 2876 int spanY = info.spanY; 2877 if (mDragInfo != null) { 2878 spanX = mDragInfo.spanX; 2879 spanY = mDragInfo.spanY; 2880 } 2881 2882 final long container = mLauncher.isHotseatLayout(cellLayout) ? 2883 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2884 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2885 final int screen = indexOfChild(cellLayout); 2886 if (!mLauncher.isHotseatLayout(cellLayout) && screen != mCurrentPage 2887 && mState != State.SPRING_LOADED) { 2888 snapToPage(screen); 2889 } 2890 2891 if (info instanceof PendingAddItemInfo) { 2892 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 2893 2894 boolean findNearestVacantCell = true; 2895 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 2896 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 2897 cellLayout, mTargetCell); 2898 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, 2899 true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 2900 mDragTargetLayout, mTargetCell)) { 2901 findNearestVacantCell = false; 2902 } 2903 } 2904 if (findNearestVacantCell) { 2905 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], spanX, spanY, null, 2906 cellLayout, mTargetCell); 2907 } 2908 2909 Runnable onAnimationCompleteRunnable = new Runnable() { 2910 @Override 2911 public void run() { 2912 // When dragging and dropping from customization tray, we deal with creating 2913 // widgets/shortcuts/folders in a slightly different way 2914 switch (pendingInfo.itemType) { 2915 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 2916 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, 2917 container, screen, mTargetCell, null); 2918 break; 2919 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2920 mLauncher.processShortcutFromDrop(pendingInfo.componentName, 2921 container, screen, mTargetCell, null); 2922 break; 2923 default: 2924 throw new IllegalStateException("Unknown item type: " + 2925 pendingInfo.itemType); 2926 } 2927 cellLayout.onDragExit(); 2928 } 2929 }; 2930 2931 animateExternalDrop((PendingAddItemInfo) info, cellLayout, d.dragView, 2932 onAnimationCompleteRunnable, ANIMATE_INTO_POSITION); 2933 } else { 2934 // This is for other drag/drop cases, like dragging from All Apps 2935 View view = null; 2936 2937 switch (info.itemType) { 2938 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 2939 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2940 if (info.container == NO_ID && info instanceof ApplicationInfo) { 2941 // Came from all apps -- make a copy 2942 info = new ShortcutInfo((ApplicationInfo) info); 2943 } 2944 view = mLauncher.createShortcut(R.layout.application, cellLayout, 2945 (ShortcutInfo) info); 2946 break; 2947 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 2948 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 2949 (FolderInfo) info, mIconCache); 2950 break; 2951 default: 2952 throw new IllegalStateException("Unknown item type: " + info.itemType); 2953 } 2954 2955 // First we find the cell nearest to point at which the item is 2956 // dropped, without any consideration to whether there is an item there. 2957 if (touchXY != null) { 2958 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 2959 cellLayout, mTargetCell); 2960 d.postAnimationRunnable = exitSpringLoadedRunnable; 2961 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, true, 2962 d.dragView, d.postAnimationRunnable)) { 2963 return; 2964 } 2965 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, d, true)) { 2966 return; 2967 } 2968 } 2969 2970 if (touchXY != null) { 2971 // when dragging and dropping, just find the closest free spot 2972 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], 1, 1, null, 2973 cellLayout, mTargetCell); 2974 } else { 2975 cellLayout.findCellForSpan(mTargetCell, 1, 1); 2976 } 2977 addInScreen(view, container, screen, mTargetCell[0], mTargetCell[1], info.spanX, 2978 info.spanY, insertAtFirst); 2979 cellLayout.onDropChild(view); 2980 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2981 cellLayout.getChildrenLayout().measureChild(view); 2982 2983 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, 2984 lp.cellX, lp.cellY); 2985 2986 if (d.dragView != null) { 2987 // We wrap the animation call in the temporary set and reset of the current 2988 // cellLayout to its final transform -- this means we animate the drag view to 2989 // the correct final location. 2990 setFinalTransitionTransform(cellLayout); 2991 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 2992 exitSpringLoadedRunnable); 2993 resetTransitionTransform(cellLayout); 2994 } 2995 } 2996 } 2997 2998 // The following methods deal with animating an item from external drop 2999 void onPreDraw(View v) { 3000 if (v instanceof ViewGroup) { 3001 ViewGroup vg = (ViewGroup) v; 3002 for (int i = 0; i < vg.getChildCount(); i++) { 3003 View child = vg.getChildAt(i); 3004 onPreDraw(child); 3005 } 3006 } else if (v instanceof TextView) { 3007 ((TextView) v).onPreDraw(); 3008 } 3009 } 3010 3011 public Bitmap createWidgetBitmap(PendingAddWidgetInfo widgetInfo) { 3012 int[] unScaledSize = mLauncher.getWorkspace().estimateItemSize(widgetInfo.spanX, 3013 widgetInfo.spanY, widgetInfo, false); 3014 View layout = widgetInfo.boundWidget; 3015 layout.setVisibility(VISIBLE); 3016 3017 int width = MeasureSpec.makeMeasureSpec(unScaledSize[0], MeasureSpec.EXACTLY); 3018 int height = MeasureSpec.makeMeasureSpec(unScaledSize[1], MeasureSpec.EXACTLY); 3019 Bitmap b = Bitmap.createBitmap(unScaledSize[0], unScaledSize[1], 3020 Bitmap.Config.ARGB_8888); 3021 Canvas c = new Canvas(b); 3022 3023 layout.measure(width, height); 3024 layout.layout(0, 0, unScaledSize[0], unScaledSize[1]); 3025 onPreDraw(layout); 3026 layout.draw(c); 3027 c.setBitmap(null); 3028 return b; 3029 } 3030 3031 public void animateExternalDrop(PendingAddItemInfo pendingInfo, CellLayout cellLayout, 3032 DragView dragView, Runnable onCompleteRunnable, int animationType) { 3033 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 3034 // location and size on the home screen. 3035 int spanX = pendingInfo.spanX; 3036 int spanY = pendingInfo.spanY; 3037 RectF r = estimateItemPosition(cellLayout, pendingInfo, 3038 mTargetCell[0], mTargetCell[1], spanX, spanY); 3039 int loc[] = new int[2]; 3040 loc[0] = (int) r.left; 3041 loc[1] = (int) r.top; 3042 setFinalTransitionTransform(cellLayout); 3043 float cellLayoutScale = 3044 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(cellLayout, loc); 3045 resetTransitionTransform(cellLayout); 3046 3047 float dragViewScaleX = r.width() / dragView.getMeasuredWidth(); 3048 float dragViewScaleY = r.height() / dragView.getMeasuredHeight(); 3049 // The animation will scale the dragView about its center, so we need to center about 3050 // the final location. 3051 loc[0] -= (dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 3052 loc[1] -= (dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 3053 3054 float scaleX = dragViewScaleX * cellLayoutScale; 3055 float scaleY = dragViewScaleY * cellLayoutScale; 3056 3057 Resources res = mLauncher.getResources(); 3058 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration) - 200; 3059 3060 int animationEnd = DragLayer.ANIMATION_END_REMAIN_VISIBLE; 3061 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && 3062 (((PendingAddWidgetInfo) pendingInfo).info.configure == null || 3063 animationType == COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION)) { 3064 Bitmap crossFadeBitmap = createWidgetBitmap((PendingAddWidgetInfo) pendingInfo); 3065 dragView.setCrossFadeBitmap(crossFadeBitmap); 3066 dragView.crossFade((int) (duration * 0.8f)); 3067 animationEnd = DragLayer.ANIMATION_END_DISAPPEAR; 3068 } else { 3069 scaleX = scaleY = Math.min(scaleX, scaleY); 3070 } 3071 3072 if (animationType == COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION) { 3073 mLauncher.getDragLayer().scaleViewIntoPosition(dragView, loc, 1, scaleX, scaleY, 3074 animationEnd, onCompleteRunnable, duration); 3075 } else if (animationType == CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION) { 3076 mLauncher.getDragLayer().scaleViewIntoPosition(dragView, loc, 0, 0.1f, 0.1f, 3077 DragLayer.ANIMATION_END_DISAPPEAR, onCompleteRunnable, duration); 3078 } else { 3079 mLauncher.getDragLayer().animateViewIntoPosition(dragView, loc, scaleX, scaleY, 3080 animationEnd, onCompleteRunnable, duration); 3081 } 3082 } 3083 3084 public void setFinalTransitionTransform(CellLayout layout) { 3085 if (isSwitchingState()) { 3086 int index = indexOfChild(layout); 3087 mCurrentScaleX = layout.getScaleX(); 3088 mCurrentScaleY = layout.getScaleY(); 3089 mCurrentTranslationX = layout.getTranslationX(); 3090 mCurrentTranslationY = layout.getTranslationY(); 3091 mCurrentRotationY = layout.getRotationY(); 3092 layout.setScaleX(mNewScaleXs[index]); 3093 layout.setScaleY(mNewScaleYs[index]); 3094 layout.setTranslationX(mNewTranslationXs[index]); 3095 layout.setTranslationY(mNewTranslationYs[index]); 3096 layout.setRotationY(mNewRotationYs[index]); 3097 } 3098 } 3099 public void resetTransitionTransform(CellLayout layout) { 3100 if (isSwitchingState()) { 3101 mCurrentScaleX = layout.getScaleX(); 3102 mCurrentScaleY = layout.getScaleY(); 3103 mCurrentTranslationX = layout.getTranslationX(); 3104 mCurrentTranslationY = layout.getTranslationY(); 3105 mCurrentRotationY = layout.getRotationY(); 3106 layout.setScaleX(mCurrentScaleX); 3107 layout.setScaleY(mCurrentScaleY); 3108 layout.setTranslationX(mCurrentTranslationX); 3109 layout.setTranslationY(mCurrentTranslationY); 3110 layout.setRotationY(mCurrentRotationY); 3111 } 3112 } 3113 3114 /** 3115 * Return the current {@link CellLayout}, correctly picking the destination 3116 * screen while a scroll is in progress. 3117 */ 3118 public CellLayout getCurrentDropLayout() { 3119 return (CellLayout) getChildAt(mNextPage == INVALID_PAGE ? mCurrentPage : mNextPage); 3120 } 3121 3122 /** 3123 * Return the current CellInfo describing our current drag; this method exists 3124 * so that Launcher can sync this object with the correct info when the activity is created/ 3125 * destroyed 3126 * 3127 */ 3128 public CellLayout.CellInfo getDragInfo() { 3129 return mDragInfo; 3130 } 3131 3132 /** 3133 * Calculate the nearest cell where the given object would be dropped. 3134 * 3135 * pixelX and pixelY should be in the coordinate system of layout 3136 */ 3137 private int[] findNearestVacantArea(int pixelX, int pixelY, 3138 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 3139 return layout.findNearestVacantArea( 3140 pixelX, pixelY, spanX, spanY, ignoreView, recycle); 3141 } 3142 3143 /** 3144 * Calculate the nearest cell where the given object would be dropped. 3145 * 3146 * pixelX and pixelY should be in the coordinate system of layout 3147 */ 3148 private int[] findNearestArea(int pixelX, int pixelY, 3149 int spanX, int spanY, CellLayout layout, int[] recycle) { 3150 return layout.findNearestArea( 3151 pixelX, pixelY, spanX, spanY, recycle); 3152 } 3153 3154 void setup(DragController dragController) { 3155 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3156 mDragController = dragController; 3157 3158 // hardware layers on children are enabled on startup, but should be disabled until 3159 // needed 3160 updateChildrenLayersEnabled(); 3161 setWallpaperDimension(); 3162 } 3163 3164 /** 3165 * Called at the end of a drag which originated on the workspace. 3166 */ 3167 public void onDropCompleted(View target, DragObject d, boolean success) { 3168 if (success) { 3169 if (target != this) { 3170 if (mDragInfo != null) { 3171 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 3172 if (mDragInfo.cell instanceof DropTarget) { 3173 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 3174 } 3175 } 3176 } 3177 } else if (mDragInfo != null) { 3178 // NOTE: When 'success' is true, onDragExit is called by the DragController before 3179 // calling onDropCompleted(). We call it ourselves here, but maybe this should be 3180 // moved into DragController.cancelDrag(). 3181 doDragExit(null); 3182 CellLayout cellLayout; 3183 if (mLauncher.isHotseatLayout(target)) { 3184 cellLayout = mLauncher.getHotseat().getLayout(); 3185 } else { 3186 cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3187 } 3188 cellLayout.onDropChild(mDragInfo.cell); 3189 } 3190 if (d.cancelled && mDragInfo.cell != null) { 3191 mDragInfo.cell.setVisibility(VISIBLE); 3192 } 3193 mDragOutline = null; 3194 mDragInfo = null; 3195 3196 // Hide the scrolling indicator after you pick up an item 3197 hideScrollingIndicator(false); 3198 } 3199 3200 public boolean isDropEnabled() { 3201 return true; 3202 } 3203 3204 @Override 3205 protected void onRestoreInstanceState(Parcelable state) { 3206 super.onRestoreInstanceState(state); 3207 Launcher.setScreen(mCurrentPage); 3208 } 3209 3210 @Override 3211 public void scrollLeft() { 3212 if (!isSmall() && !mIsSwitchingState) { 3213 super.scrollLeft(); 3214 } 3215 Folder openFolder = getOpenFolder(); 3216 if (openFolder != null) { 3217 openFolder.completeDragExit(); 3218 } 3219 } 3220 3221 @Override 3222 public void scrollRight() { 3223 if (!isSmall() && !mIsSwitchingState) { 3224 super.scrollRight(); 3225 } 3226 Folder openFolder = getOpenFolder(); 3227 if (openFolder != null) { 3228 openFolder.completeDragExit(); 3229 } 3230 } 3231 3232 @Override 3233 public boolean onEnterScrollArea(int x, int y, int direction) { 3234 // Ignore the scroll area if we are dragging over the hot seat 3235 if (mLauncher.getHotseat() != null) { 3236 Rect r = new Rect(); 3237 mLauncher.getHotseat().getHitRect(r); 3238 if (r.contains(x, y)) { 3239 return false; 3240 } 3241 } 3242 3243 boolean result = false; 3244 if (!isSmall() && !mIsSwitchingState) { 3245 mInScrollArea = true; 3246 3247 final int page = (mNextPage != INVALID_PAGE ? mNextPage : mCurrentPage) + 3248 (direction == DragController.SCROLL_LEFT ? -1 : 1); 3249 cancelFolderCreation(); 3250 3251 if (0 <= page && page < getChildCount()) { 3252 CellLayout layout = (CellLayout) getChildAt(page); 3253 // Exit the current layout and mark the overlapping layout 3254 if (mDragTargetLayout != null) { 3255 mDragTargetLayout.setIsDragOverlapping(false); 3256 mDragTargetLayout.onDragExit(); 3257 } 3258 mDragTargetLayout = layout; 3259 mDragTargetLayout.setIsDragOverlapping(true); 3260 3261 // Workspace is responsible for drawing the edge glow on adjacent pages, 3262 // so we need to redraw the workspace when this may have changed. 3263 invalidate(); 3264 result = true; 3265 } 3266 } 3267 return result; 3268 } 3269 3270 @Override 3271 public boolean onExitScrollArea() { 3272 boolean result = false; 3273 if (mInScrollArea) { 3274 if (mDragTargetLayout != null) { 3275 mDragTargetLayout.setIsDragOverlapping(false); 3276 // Workspace is responsible for drawing the edge glow on adjacent pages, 3277 // so we need to redraw the workspace when this may have changed. 3278 invalidate(); 3279 } 3280 if (mDragTargetLayout != null && mDragHasEnteredWorkspace) { 3281 // Unmark the overlapping layout and re-enter the current layout 3282 mDragTargetLayout = getCurrentDropLayout(); 3283 mDragTargetLayout.onDragEnter(); 3284 } 3285 result = true; 3286 mInScrollArea = false; 3287 } 3288 return result; 3289 } 3290 3291 private void onResetScrollArea() { 3292 if (mDragTargetLayout != null) { 3293 // Unmark the overlapping layout 3294 mDragTargetLayout.setIsDragOverlapping(false); 3295 3296 // Workspace is responsible for drawing the edge glow on adjacent pages, 3297 // so we need to redraw the workspace when this may have changed. 3298 invalidate(); 3299 } 3300 mInScrollArea = false; 3301 } 3302 3303 /** 3304 * Returns a specific CellLayout 3305 */ 3306 CellLayout getParentCellLayoutForView(View v) { 3307 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3308 for (CellLayout layout : layouts) { 3309 if (layout.getChildrenLayout().indexOfChild(v) > -1) { 3310 return layout; 3311 } 3312 } 3313 return null; 3314 } 3315 3316 /** 3317 * Returns a list of all the CellLayouts in the workspace. 3318 */ 3319 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3320 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3321 int screenCount = getChildCount(); 3322 for (int screen = 0; screen < screenCount; screen++) { 3323 layouts.add(((CellLayout) getChildAt(screen))); 3324 } 3325 if (mLauncher.getHotseat() != null) { 3326 layouts.add(mLauncher.getHotseat().getLayout()); 3327 } 3328 return layouts; 3329 } 3330 3331 /** 3332 * We should only use this to search for specific children. Do not use this method to modify 3333 * CellLayoutChildren directly. 3334 */ 3335 ArrayList<CellLayoutChildren> getWorkspaceAndHotseatCellLayoutChildren() { 3336 ArrayList<CellLayoutChildren> childrenLayouts = new ArrayList<CellLayoutChildren>(); 3337 int screenCount = getChildCount(); 3338 for (int screen = 0; screen < screenCount; screen++) { 3339 childrenLayouts.add(((CellLayout) getChildAt(screen)).getChildrenLayout()); 3340 } 3341 if (mLauncher.getHotseat() != null) { 3342 childrenLayouts.add(mLauncher.getHotseat().getLayout().getChildrenLayout()); 3343 } 3344 return childrenLayouts; 3345 } 3346 3347 public Folder getFolderForTag(Object tag) { 3348 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3349 for (CellLayoutChildren layout: childrenLayouts) { 3350 int count = layout.getChildCount(); 3351 for (int i = 0; i < count; i++) { 3352 View child = layout.getChildAt(i); 3353 if (child instanceof Folder) { 3354 Folder f = (Folder) child; 3355 if (f.getInfo() == tag && f.getInfo().opened) { 3356 return f; 3357 } 3358 } 3359 } 3360 } 3361 return null; 3362 } 3363 3364 public View getViewForTag(Object tag) { 3365 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3366 for (CellLayoutChildren layout: childrenLayouts) { 3367 int count = layout.getChildCount(); 3368 for (int i = 0; i < count; i++) { 3369 View child = layout.getChildAt(i); 3370 if (child.getTag() == tag) { 3371 return child; 3372 } 3373 } 3374 } 3375 return null; 3376 } 3377 3378 void clearDropTargets() { 3379 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3380 for (CellLayoutChildren layout: childrenLayouts) { 3381 int childCount = layout.getChildCount(); 3382 for (int j = 0; j < childCount; j++) { 3383 View v = layout.getChildAt(j); 3384 if (v instanceof DropTarget) { 3385 mDragController.removeDropTarget((DropTarget) v); 3386 } 3387 } 3388 } 3389 } 3390 3391 void removeItems(final ArrayList<ApplicationInfo> apps) { 3392 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3393 3394 final HashSet<String> packageNames = new HashSet<String>(); 3395 final int appCount = apps.size(); 3396 for (int i = 0; i < appCount; i++) { 3397 packageNames.add(apps.get(i).componentName.getPackageName()); 3398 } 3399 3400 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3401 for (final CellLayout layoutParent: cellLayouts) { 3402 final ViewGroup layout = layoutParent.getChildrenLayout(); 3403 3404 // Avoid ANRs by treating each screen separately 3405 post(new Runnable() { 3406 public void run() { 3407 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3408 childrenToRemove.clear(); 3409 3410 int childCount = layout.getChildCount(); 3411 for (int j = 0; j < childCount; j++) { 3412 final View view = layout.getChildAt(j); 3413 Object tag = view.getTag(); 3414 3415 if (tag instanceof ShortcutInfo) { 3416 final ShortcutInfo info = (ShortcutInfo) tag; 3417 final Intent intent = info.intent; 3418 final ComponentName name = intent.getComponent(); 3419 3420 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3421 for (String packageName: packageNames) { 3422 if (packageName.equals(name.getPackageName())) { 3423 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3424 childrenToRemove.add(view); 3425 } 3426 } 3427 } 3428 } else if (tag instanceof FolderInfo) { 3429 final FolderInfo info = (FolderInfo) tag; 3430 final ArrayList<ShortcutInfo> contents = info.contents; 3431 final int contentsCount = contents.size(); 3432 final ArrayList<ShortcutInfo> appsToRemoveFromFolder = 3433 new ArrayList<ShortcutInfo>(); 3434 3435 for (int k = 0; k < contentsCount; k++) { 3436 final ShortcutInfo appInfo = contents.get(k); 3437 final Intent intent = appInfo.intent; 3438 final ComponentName name = intent.getComponent(); 3439 3440 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3441 for (String packageName: packageNames) { 3442 if (packageName.equals(name.getPackageName())) { 3443 appsToRemoveFromFolder.add(appInfo); 3444 } 3445 } 3446 } 3447 } 3448 for (ShortcutInfo item: appsToRemoveFromFolder) { 3449 info.remove(item); 3450 LauncherModel.deleteItemFromDatabase(mLauncher, item); 3451 } 3452 } else if (tag instanceof LauncherAppWidgetInfo) { 3453 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3454 final AppWidgetProviderInfo provider = 3455 widgets.getAppWidgetInfo(info.appWidgetId); 3456 if (provider != null) { 3457 for (String packageName: packageNames) { 3458 if (packageName.equals(provider.provider.getPackageName())) { 3459 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3460 childrenToRemove.add(view); 3461 } 3462 } 3463 } 3464 } 3465 } 3466 3467 childCount = childrenToRemove.size(); 3468 for (int j = 0; j < childCount; j++) { 3469 View child = childrenToRemove.get(j); 3470 // Note: We can not remove the view directly from CellLayoutChildren as this 3471 // does not re-mark the spaces as unoccupied. 3472 layoutParent.removeViewInLayout(child); 3473 if (child instanceof DropTarget) { 3474 mDragController.removeDropTarget((DropTarget)child); 3475 } 3476 } 3477 3478 if (childCount > 0) { 3479 layout.requestLayout(); 3480 layout.invalidate(); 3481 } 3482 } 3483 }); 3484 } 3485 } 3486 3487 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3488 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3489 for (CellLayoutChildren layout: childrenLayouts) { 3490 int childCount = layout.getChildCount(); 3491 for (int j = 0; j < childCount; j++) { 3492 final View view = layout.getChildAt(j); 3493 Object tag = view.getTag(); 3494 if (tag instanceof ShortcutInfo) { 3495 ShortcutInfo info = (ShortcutInfo)tag; 3496 // We need to check for ACTION_MAIN otherwise getComponent() might 3497 // return null for some shortcuts (for instance, for shortcuts to 3498 // web pages.) 3499 final Intent intent = info.intent; 3500 final ComponentName name = intent.getComponent(); 3501 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3502 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3503 final int appCount = apps.size(); 3504 for (int k = 0; k < appCount; k++) { 3505 ApplicationInfo app = apps.get(k); 3506 if (app.componentName.equals(name)) { 3507 info.setIcon(mIconCache.getIcon(info.intent)); 3508 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 3509 new FastBitmapDrawable(info.getIcon(mIconCache)), 3510 null, null); 3511 } 3512 } 3513 } 3514 } 3515 } 3516 } 3517 } 3518 3519 void moveToDefaultScreen(boolean animate) { 3520 if (!isSmall()) { 3521 if (animate) { 3522 snapToPage(mDefaultPage); 3523 } else { 3524 setCurrentPage(mDefaultPage); 3525 } 3526 } 3527 getChildAt(mDefaultPage).requestFocus(); 3528 } 3529 3530 @Override 3531 public void syncPages() { 3532 } 3533 3534 @Override 3535 public void syncPageItems(int page, boolean immediate) { 3536 } 3537 3538 @Override 3539 protected String getCurrentPageDescription() { 3540 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 3541 return String.format(mContext.getString(R.string.workspace_scroll_format), 3542 page + 1, getChildCount()); 3543 } 3544 3545 public void getLocationInDragLayer(int[] loc) { 3546 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 3547 } 3548 3549 void setFadeForOverScroll(float fade) { 3550 if (!isScrollingIndicatorEnabled()) return; 3551 3552 mOverscrollFade = fade; 3553 float reducedFade = 0.5f + 0.5f * (1 - fade); 3554 final ViewGroup parent = (ViewGroup) getParent(); 3555 final ImageView qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3556 final ImageView dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3557 final View scrollIndicator = getScrollingIndicator(); 3558 3559 cancelScrollingIndicatorAnimations(); 3560 if (qsbDivider != null) qsbDivider.setAlpha(reducedFade); 3561 if (dockDivider != null) dockDivider.setAlpha(reducedFade); 3562 scrollIndicator.setAlpha(1 - fade); 3563 } 3564} 3565