Workspace.java revision ef3dd6efe03c988be1fe980fbed75333017e6760
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.launcher2; 18 19import android.animation.Animator; 20import android.animation.Animator.AnimatorListener; 21import android.animation.AnimatorListenerAdapter; 22import android.animation.AnimatorSet; 23import android.animation.ObjectAnimator; 24import android.animation.TimeInterpolator; 25import android.animation.ValueAnimator; 26import android.animation.ValueAnimator.AnimatorUpdateListener; 27import android.app.AlertDialog; 28import android.app.WallpaperManager; 29import android.appwidget.AppWidgetManager; 30import android.appwidget.AppWidgetProviderInfo; 31import android.content.ClipData; 32import android.content.ClipDescription; 33import android.content.ComponentName; 34import android.content.Context; 35import android.content.Intent; 36import android.content.res.Resources; 37import android.content.res.TypedArray; 38import android.graphics.Bitmap; 39import android.graphics.Camera; 40import android.graphics.Canvas; 41import android.graphics.Matrix; 42import android.graphics.Paint; 43import android.graphics.Point; 44import android.graphics.PorterDuff; 45import android.graphics.Rect; 46import android.graphics.RectF; 47import android.graphics.Region.Op; 48import android.graphics.drawable.Drawable; 49import android.os.IBinder; 50import android.os.Parcelable; 51import android.util.AttributeSet; 52import android.util.DisplayMetrics; 53import android.util.Log; 54import android.util.Pair; 55import android.view.Display; 56import android.view.DragEvent; 57import android.view.MotionEvent; 58import android.view.View; 59import android.view.ViewGroup; 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 { 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 private AnimatorListener mChangeStateAnimationListener; 163 164 boolean mAnimatingViewIntoPlace = false; 165 boolean mIsDragOccuring = false; 166 boolean mChildrenLayersEnabled = true; 167 168 /** Is the user is dragging an item near the edge of a page? */ 169 private boolean mInScrollArea = false; 170 171 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 172 private Bitmap mDragOutline = null; 173 private final Rect mTempRect = new Rect(); 174 private final int[] mTempXY = new int[2]; 175 private float mOverscrollFade = 0; 176 177 // Paint used to draw external drop outline 178 private final Paint mExternalDragOutlinePaint = new Paint(); 179 180 // Camera and Matrix used to determine the final position of a neighboring CellLayout 181 private final Matrix mMatrix = new Matrix(); 182 private final Camera mCamera = new Camera(); 183 private final float mTempFloat2[] = new float[2]; 184 185 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 186 int mWallpaperWidth; 187 int mWallpaperHeight; 188 WallpaperOffsetInterpolator mWallpaperOffset; 189 boolean mUpdateWallpaperOffsetImmediately = false; 190 private Runnable mDelayedResizeRunnable; 191 private int mDisplayWidth; 192 private int mDisplayHeight; 193 private int mWallpaperTravelWidth; 194 195 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 196 private static final int FOLDER_CREATION_TIMEOUT = 250; 197 private final Alarm mFolderCreationAlarm = new Alarm(); 198 private FolderRingAnimator mDragFolderRingAnimator = null; 199 private View mLastDragOverView = null; 200 private boolean mCreateUserFolderOnDrop = false; 201 202 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 203 private float mXDown; 204 private float mYDown; 205 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 206 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 207 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 208 209 // Relating to the animation of items being dropped externally 210 public static final int ANIMATE_INTO_POSITION = 0; 211 public static final int COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION = 1; 212 public static final int CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION = 2; 213 214 // These variables are used for storing the initial and final values during workspace animations 215 private int mSavedScrollX; 216 private float mSavedRotationY; 217 private float mSavedTranslationX; 218 private float mCurrentScaleX; 219 private float mCurrentScaleY; 220 private float mCurrentRotationY; 221 private float mCurrentTranslationX; 222 private float mCurrentTranslationY; 223 private float[] mOldTranslationXs; 224 private float[] mOldTranslationYs; 225 private float[] mOldScaleXs; 226 private float[] mOldScaleYs; 227 private float[] mOldBackgroundAlphas; 228 private float[] mOldBackgroundAlphaMultipliers; 229 private float[] mOldAlphas; 230 private float[] mOldRotationYs; 231 private float[] mNewTranslationXs; 232 private float[] mNewTranslationYs; 233 private float[] mNewScaleXs; 234 private float[] mNewScaleYs; 235 private float[] mNewBackgroundAlphas; 236 private float[] mNewBackgroundAlphaMultipliers; 237 private float[] mNewAlphas; 238 private float[] mNewRotationYs; 239 private float mTransitionProgress = 1f; 240 241 /** 242 * Used to inflate the Workspace from XML. 243 * 244 * @param context The application's context. 245 * @param attrs The attributes set containing the Workspace's customization values. 246 */ 247 public Workspace(Context context, AttributeSet attrs) { 248 this(context, attrs, 0); 249 } 250 251 /** 252 * Used to inflate the Workspace from XML. 253 * 254 * @param context The application's context. 255 * @param attrs The attributes set containing the Workspace's customization values. 256 * @param defStyle Unused. 257 */ 258 public Workspace(Context context, AttributeSet attrs, int defStyle) { 259 super(context, attrs, defStyle); 260 mContentIsRefreshable = false; 261 262 // With workspace, data is available straight from the get-go 263 setDataIsReady(); 264 265 mFadeInAdjacentScreens = 266 getResources().getBoolean(R.bool.config_workspaceFadeAdjacentScreens); 267 mWallpaperManager = WallpaperManager.getInstance(context); 268 269 int cellCountX = DEFAULT_CELL_COUNT_X; 270 int cellCountY = DEFAULT_CELL_COUNT_Y; 271 272 TypedArray a = context.obtainStyledAttributes(attrs, 273 R.styleable.Workspace, defStyle, 0); 274 275 final Resources res = context.getResources(); 276 if (LauncherApplication.isScreenLarge()) { 277 // Determine number of rows/columns dynamically 278 // TODO: This code currently fails on tablets with an aspect ratio < 1.3. 279 // Around that ratio we should make cells the same size in portrait and 280 // landscape 281 TypedArray actionBarSizeTypedArray = 282 context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize }); 283 DisplayMetrics displayMetrics = res.getDisplayMetrics(); 284 final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); 285 final float systemBarHeight = res.getDimension(R.dimen.status_bar_height); 286 final float smallestScreenDim = res.getConfiguration().smallestScreenWidthDp * 287 displayMetrics.density; 288 289 cellCountX = 1; 290 while (CellLayout.widthInPortrait(res, cellCountX + 1) <= smallestScreenDim) { 291 cellCountX++; 292 } 293 294 cellCountY = 1; 295 while (actionBarHeight + CellLayout.heightInLandscape(res, cellCountY + 1) 296 <= smallestScreenDim - systemBarHeight) { 297 cellCountY++; 298 } 299 } 300 301 mSpringLoadedShrinkFactor = 302 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 303 304 // if the value is manually specified, use that instead 305 cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX); 306 cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY); 307 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 308 a.recycle(); 309 310 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 311 setHapticFeedbackEnabled(false); 312 313 mLauncher = (Launcher) context; 314 initWorkspace(); 315 316 // Disable multitouch across the workspace/all apps/customize tray 317 setMotionEventSplittingEnabled(true); 318 } 319 320 // estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each 321 // dimension if unsuccessful 322 public int[] estimateItemSize(int hSpan, int vSpan, 323 PendingAddItemInfo pendingItemInfo, boolean springLoaded) { 324 int[] size = new int[2]; 325 if (getChildCount() > 0) { 326 CellLayout cl = (CellLayout) mLauncher.getWorkspace().getChildAt(0); 327 RectF r = estimateItemPosition(cl, pendingItemInfo, 0, 0, hSpan, vSpan); 328 size[0] = (int) r.width(); 329 size[1] = (int) r.height(); 330 if (springLoaded) { 331 size[0] *= mSpringLoadedShrinkFactor; 332 size[1] *= mSpringLoadedShrinkFactor; 333 } 334 return size; 335 } else { 336 size[0] = Integer.MAX_VALUE; 337 size[1] = Integer.MAX_VALUE; 338 return size; 339 } 340 } 341 public RectF estimateItemPosition(CellLayout cl, ItemInfo pendingInfo, 342 int hCell, int vCell, int hSpan, int vSpan) { 343 RectF r = new RectF(); 344 cl.cellToRect(hCell, vCell, hSpan, vSpan, r); 345 return r; 346 } 347 348 public void buildPageHardwareLayers() { 349 if (getWindowToken() != null) { 350 final int childCount = getChildCount(); 351 for (int i = 0; i < childCount; i++) { 352 CellLayout cl = (CellLayout) getChildAt(i); 353 cl.buildChildrenLayer(); 354 } 355 } 356 } 357 358 public void onDragStart(DragSource source, Object info, int dragAction) { 359 mIsDragOccuring = true; 360 updateChildrenLayersEnabled(); 361 mLauncher.lockScreenOrientationOnLargeUI(); 362 } 363 364 public void onDragEnd() { 365 mIsDragOccuring = false; 366 updateChildrenLayersEnabled(); 367 mLauncher.unlockScreenOrientationOnLargeUI(); 368 } 369 370 /** 371 * Initializes various states for this workspace. 372 */ 373 protected void initWorkspace() { 374 Context context = getContext(); 375 mCurrentPage = mDefaultPage; 376 Launcher.setScreen(mCurrentPage); 377 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 378 mIconCache = app.getIconCache(); 379 mExternalDragOutlinePaint.setAntiAlias(true); 380 setWillNotDraw(false); 381 setChildrenDrawnWithCacheEnabled(true); 382 383 try { 384 final Resources res = getResources(); 385 mBackground = res.getDrawable(R.drawable.apps_customize_bg); 386 } catch (Resources.NotFoundException e) { 387 // In this case, we will skip drawing background protection 388 } 389 390 mChangeStateAnimationListener = new AnimatorListenerAdapter() { 391 @Override 392 public void onAnimationStart(Animator animation) { 393 mIsSwitchingState = true; 394 } 395 396 @Override 397 public void onAnimationEnd(Animator animation) { 398 mIsSwitchingState = false; 399 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 400 updateChildrenLayersEnabled(); 401 } 402 }; 403 404 mWallpaperOffset = new WallpaperOffsetInterpolator(); 405 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 406 mDisplayWidth = display.getWidth(); 407 mDisplayHeight = display.getHeight(); 408 mWallpaperTravelWidth = (int) (mDisplayWidth * 409 wallpaperTravelToScreenWidthRatio(mDisplayWidth, mDisplayHeight)); 410 411 mFlingThresholdVelocity = (int) (FLING_THRESHOLD_VELOCITY * mDensity); 412 413 } 414 415 @Override 416 protected int getScrollMode() { 417 return SmoothPagedView.X_LARGE_MODE; 418 } 419 420 @Override 421 protected void onViewAdded(View child) { 422 super.onViewAdded(child); 423 if (!(child instanceof CellLayout)) { 424 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 425 } 426 CellLayout cl = ((CellLayout) child); 427 cl.setOnInterceptTouchListener(this); 428 cl.setClickable(true); 429 cl.enableHardwareLayers(); 430 } 431 432 /** 433 * @return The open folder on the current screen, or null if there is none 434 */ 435 Folder getOpenFolder() { 436 DragLayer dragLayer = mLauncher.getDragLayer(); 437 int count = dragLayer.getChildCount(); 438 for (int i = 0; i < count; i++) { 439 View child = dragLayer.getChildAt(i); 440 if (child instanceof Folder) { 441 Folder folder = (Folder) child; 442 if (folder.getInfo().opened) 443 return folder; 444 } 445 } 446 return null; 447 } 448 449 boolean isTouchActive() { 450 return mTouchState != TOUCH_STATE_REST; 451 } 452 453 /** 454 * Adds the specified child in the specified screen. The position and dimension of 455 * the child are defined by x, y, spanX and spanY. 456 * 457 * @param child The child to add in one of the workspace's screens. 458 * @param screen The screen in which to add the child. 459 * @param x The X position of the child in the screen's grid. 460 * @param y The Y position of the child in the screen's grid. 461 * @param spanX The number of cells spanned horizontally by the child. 462 * @param spanY The number of cells spanned vertically by the child. 463 */ 464 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY) { 465 addInScreen(child, container, screen, x, y, spanX, spanY, false); 466 } 467 468 /** 469 * Adds the specified child in the specified screen. The position and dimension of 470 * the child are defined by x, y, spanX and spanY. 471 * 472 * @param child The child to add in one of the workspace's screens. 473 * @param screen The screen in which to add the child. 474 * @param x The X position of the child in the screen's grid. 475 * @param y The Y position of the child in the screen's grid. 476 * @param spanX The number of cells spanned horizontally by the child. 477 * @param spanY The number of cells spanned vertically by the child. 478 * @param insert When true, the child is inserted at the beginning of the children list. 479 */ 480 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY, 481 boolean insert) { 482 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 483 if (screen < 0 || screen >= getChildCount()) { 484 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 485 + " (was " + screen + "); skipping child"); 486 return; 487 } 488 } 489 490 final CellLayout layout; 491 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 492 layout = mLauncher.getHotseat().getLayout(); 493 child.setOnKeyListener(null); 494 495 // Hide folder title in the hotseat 496 if (child instanceof FolderIcon) { 497 ((FolderIcon) child).setTextVisible(false); 498 } 499 500 if (screen < 0) { 501 screen = mLauncher.getHotseat().getOrderInHotseat(x, y); 502 } else { 503 // Note: We do this to ensure that the hotseat is always laid out in the orientation 504 // of the hotseat in order regardless of which orientation they were added 505 x = mLauncher.getHotseat().getCellXFromOrder(screen); 506 y = mLauncher.getHotseat().getCellYFromOrder(screen); 507 } 508 } else { 509 // Show folder title if not in the hotseat 510 if (child instanceof FolderIcon) { 511 ((FolderIcon) child).setTextVisible(true); 512 } 513 514 layout = (CellLayout) getChildAt(screen); 515 child.setOnKeyListener(new IconKeyEventListener()); 516 } 517 518 LayoutParams genericLp = child.getLayoutParams(); 519 CellLayout.LayoutParams lp; 520 if (genericLp == null || !(genericLp instanceof CellLayout.LayoutParams)) { 521 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 522 } else { 523 lp = (CellLayout.LayoutParams) genericLp; 524 lp.cellX = x; 525 lp.cellY = y; 526 lp.cellHSpan = spanX; 527 lp.cellVSpan = spanY; 528 } 529 530 if (spanX < 0 && spanY < 0) { 531 lp.isLockedToGrid = false; 532 } 533 534 // Get the canonical child id to uniquely represent this view in this screen 535 int childId = LauncherModel.getCellLayoutChildId(container, screen, x, y, spanX, spanY); 536 boolean markCellsAsOccupied = !(child instanceof Folder); 537 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 538 // TODO: This branch occurs when the workspace is adding views 539 // outside of the defined grid 540 // maybe we should be deleting these items from the LauncherModel? 541 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 542 } 543 544 if (!(child instanceof Folder)) { 545 child.setHapticFeedbackEnabled(false); 546 child.setOnLongClickListener(mLongClickListener); 547 } 548 if (child instanceof DropTarget) { 549 mDragController.addDropTarget((DropTarget) child); 550 } 551 } 552 553 /** 554 * Check if the point (x, y) hits a given page. 555 */ 556 private boolean hitsPage(int index, float x, float y) { 557 final View page = getChildAt(index); 558 if (page != null) { 559 float[] localXY = { x, y }; 560 mapPointFromSelfToChild(page, localXY); 561 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 562 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 563 } 564 return false; 565 } 566 567 @Override 568 protected boolean hitsPreviousPage(float x, float y) { 569 // mNextPage is set to INVALID_PAGE whenever we are stationary. 570 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 571 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 572 573 // Only allow tap to next page on large devices, where there's significant margin outside 574 // the active workspace 575 return LauncherApplication.isScreenLarge() && hitsPage(current - 1, x, y); 576 } 577 578 @Override 579 protected boolean hitsNextPage(float x, float y) { 580 // mNextPage is set to INVALID_PAGE whenever we are stationary. 581 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 582 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 583 584 // Only allow tap to next page on large devices, where there's significant margin outside 585 // the active workspace 586 return LauncherApplication.isScreenLarge() && hitsPage(current + 1, x, y); 587 } 588 589 /** 590 * Called directly from a CellLayout (not by the framework), after we've been added as a 591 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 592 * that it should intercept touch events, which is not something that is normally supported. 593 */ 594 @Override 595 public boolean onTouch(View v, MotionEvent event) { 596 return (isSmall() || mIsSwitchingState); 597 } 598 599 public boolean isSwitchingState() { 600 return mIsSwitchingState; 601 } 602 603 protected void onWindowVisibilityChanged (int visibility) { 604 mLauncher.onWindowVisibilityChanged(visibility); 605 } 606 607 @Override 608 public boolean dispatchUnhandledMove(View focused, int direction) { 609 if (isSmall() || mIsSwitchingState) { 610 // when the home screens are shrunken, shouldn't allow side-scrolling 611 return false; 612 } 613 return super.dispatchUnhandledMove(focused, direction); 614 } 615 616 @Override 617 public boolean onInterceptTouchEvent(MotionEvent ev) { 618 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 619 case MotionEvent.ACTION_DOWN: 620 mXDown = ev.getX(); 621 mYDown = ev.getY(); 622 break; 623 case MotionEvent.ACTION_POINTER_UP: 624 case MotionEvent.ACTION_UP: 625 if (mTouchState == TOUCH_STATE_REST) { 626 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 627 if (!currentPage.lastDownOnOccupiedCell()) { 628 onWallpaperTap(ev); 629 } 630 } 631 } 632 return super.onInterceptTouchEvent(ev); 633 } 634 635 @Override 636 protected void determineScrollingStart(MotionEvent ev) { 637 if (!isSmall() && !mIsSwitchingState) { 638 float deltaX = Math.abs(ev.getX() - mXDown); 639 float deltaY = Math.abs(ev.getY() - mYDown); 640 641 if (Float.compare(deltaX, 0f) == 0) return; 642 643 float slope = deltaY / deltaX; 644 float theta = (float) Math.atan(slope); 645 646 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 647 cancelCurrentPageLongPress(); 648 } 649 650 if (theta > MAX_SWIPE_ANGLE) { 651 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 652 return; 653 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 654 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 655 // increase the touch slop to make it harder to begin scrolling the workspace. This 656 // results in vertically scrolling widgets to more easily. The higher the angle, the 657 // more we increase touch slop. 658 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 659 float extraRatio = (float) 660 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 661 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 662 } else { 663 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 664 super.determineScrollingStart(ev); 665 } 666 } 667 } 668 669 @Override 670 protected boolean isScrollingIndicatorEnabled() { 671 return mState != State.SPRING_LOADED; 672 } 673 674 protected void onPageBeginMoving() { 675 super.onPageBeginMoving(); 676 677 if (isHardwareAccelerated()) { 678 updateChildrenLayersEnabled(); 679 } else { 680 if (mNextPage != INVALID_PAGE) { 681 // we're snapping to a particular screen 682 enableChildrenCache(mCurrentPage, mNextPage); 683 } else { 684 // this is when user is actively dragging a particular screen, they might 685 // swipe it either left or right (but we won't advance by more than one screen) 686 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 687 } 688 } 689 690 // Only show page outlines as we pan if we are on large screen 691 if (LauncherApplication.isScreenLarge()) { 692 showOutlines(); 693 } 694 695 // Show the scroll indicator as you pan the page 696 showScrollingIndicator(false); 697 } 698 699 protected void onPageEndMoving() { 700 super.onPageEndMoving(); 701 702 if (isHardwareAccelerated()) { 703 updateChildrenLayersEnabled(); 704 } else { 705 clearChildrenCache(); 706 } 707 708 709 if (mDragController.isDragging()) { 710 if (isSmall()) { 711 // If we are in springloaded mode, then force an event to check if the current touch 712 // is under a new page (to scroll to) 713 mDragController.forceMoveEvent(); 714 } 715 } else { 716 // If we are not mid-dragging, hide the page outlines if we are on a large screen 717 if (LauncherApplication.isScreenLarge()) { 718 hideOutlines(); 719 } 720 721 // Hide the scroll indicator as you pan the page 722 if (!mDragController.isDragging()) { 723 hideScrollingIndicator(false); 724 } 725 } 726 mOverScrollMaxBackgroundAlpha = 0.0f; 727 mOverScrollPageIndex = -1; 728 729 if (mDelayedResizeRunnable != null) { 730 mDelayedResizeRunnable.run(); 731 mDelayedResizeRunnable = null; 732 } 733 } 734 735 @Override 736 protected void notifyPageSwitchListener() { 737 super.notifyPageSwitchListener(); 738 Launcher.setScreen(mCurrentPage); 739 }; 740 741 // As a ratio of screen height, the total distance we want the parallax effect to span 742 // horizontally 743 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 744 float aspectRatio = width / (float) height; 745 746 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 747 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 748 // We will use these two data points to extrapolate how much the wallpaper parallax effect 749 // to span (ie travel) at any aspect ratio: 750 751 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 752 final float ASPECT_RATIO_PORTRAIT = 10/16f; 753 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 754 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 755 756 // To find out the desired width at different aspect ratios, we use the following two 757 // formulas, where the coefficient on x is the aspect ratio (width/height): 758 // (16/10)x + y = 1.5 759 // (10/16)x + y = 1.2 760 // We solve for x and y and end up with a final formula: 761 final float x = 762 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 763 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 764 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 765 return x * aspectRatio + y; 766 } 767 768 // The range of scroll values for Workspace 769 private int getScrollRange() { 770 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 771 } 772 773 protected void setWallpaperDimension() { 774 DisplayMetrics displayMetrics = new DisplayMetrics(); 775 mLauncher.getWindowManager().getDefaultDisplay().getRealMetrics(displayMetrics); 776 final int maxDim = Math.max(displayMetrics.widthPixels, displayMetrics.heightPixels); 777 final int minDim = Math.min(displayMetrics.widthPixels, displayMetrics.heightPixels); 778 779 // We need to ensure that there is enough extra space in the wallpaper for the intended 780 // parallax effects 781 if (LauncherApplication.isScreenLarge()) { 782 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 783 mWallpaperHeight = maxDim; 784 } else { 785 mWallpaperWidth = Math.max((int) (minDim * WALLPAPER_SCREENS_SPAN), maxDim); 786 mWallpaperHeight = maxDim; 787 } 788 new Thread("setWallpaperDimension") { 789 public void run() { 790 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 791 } 792 }.start(); 793 } 794 795 public void setVerticalWallpaperOffset(float offset) { 796 mWallpaperOffset.setFinalY(offset); 797 } 798 public float getVerticalWallpaperOffset() { 799 return mWallpaperOffset.getCurrY(); 800 } 801 public void setHorizontalWallpaperOffset(float offset) { 802 mWallpaperOffset.setFinalX(offset); 803 } 804 public float getHorizontalWallpaperOffset() { 805 return mWallpaperOffset.getCurrX(); 806 } 807 808 private float wallpaperOffsetForCurrentScroll() { 809 // The wallpaper travel width is how far, from left to right, the wallpaper will move 810 // at this orientation. On tablets in portrait mode we don't move all the way to the 811 // edges of the wallpaper, or otherwise the parallax effect would be too strong. 812 int wallpaperTravelWidth = mWallpaperWidth; 813 if (LauncherApplication.isScreenLarge()) { 814 wallpaperTravelWidth = mWallpaperTravelWidth; 815 } 816 817 // Set wallpaper offset steps (1 / (number of screens - 1)) 818 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f); 819 820 // For the purposes of computing the scrollRange and overScrollOffset, we assume 821 // that mLayoutScale is 1. This means that when we're in spring-loaded mode, 822 // there's no discrepancy between the wallpaper offset for a given page. 823 float layoutScale = mLayoutScale; 824 mLayoutScale = 1f; 825 int scrollRange = getScrollRange(); 826 827 // Again, we adjust the wallpaper offset to be consistent between values of mLayoutScale 828 float adjustedScrollX = Math.max(0, Math.min(mScrollX, mMaxScrollX)); 829 adjustedScrollX *= mWallpaperScrollRatio; 830 mLayoutScale = layoutScale; 831 832 float scrollProgress = 833 adjustedScrollX / (float) scrollRange; 834 float offsetInDips = wallpaperTravelWidth * scrollProgress + 835 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 836 float offset = offsetInDips / (float) mWallpaperWidth; 837 return offset; 838 } 839 private void syncWallpaperOffsetWithScroll() { 840 final boolean enableWallpaperEffects = isHardwareAccelerated(); 841 if (enableWallpaperEffects) { 842 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 843 } 844 } 845 846 public void updateWallpaperOffsetImmediately() { 847 mUpdateWallpaperOffsetImmediately = true; 848 } 849 850 private void updateWallpaperOffsets() { 851 boolean updateNow = false; 852 boolean keepUpdating = true; 853 if (mUpdateWallpaperOffsetImmediately) { 854 updateNow = true; 855 keepUpdating = false; 856 mWallpaperOffset.jumpToFinal(); 857 mUpdateWallpaperOffsetImmediately = false; 858 } else { 859 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 860 } 861 if (updateNow) { 862 if (mWindowToken != null) { 863 mWallpaperManager.setWallpaperOffsets(mWindowToken, 864 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 865 } 866 } 867 if (keepUpdating) { 868 invalidate(); 869 } 870 } 871 872 @Override 873 protected void updateCurrentPageScroll() { 874 super.updateCurrentPageScroll(); 875 computeWallpaperScrollRatio(mCurrentPage); 876 } 877 878 @Override 879 protected void snapToPage(int whichPage) { 880 super.snapToPage(whichPage); 881 computeWallpaperScrollRatio(whichPage); 882 } 883 884 private void computeWallpaperScrollRatio(int page) { 885 // Here, we determine what the desired scroll would be with and without a layout scale, 886 // and compute a ratio between the two. This allows us to adjust the wallpaper offset 887 // as though there is no layout scale. 888 float layoutScale = mLayoutScale; 889 int scaled = getChildOffset(page) - getRelativeChildOffset(page); 890 mLayoutScale = 1.0f; 891 float unscaled = getChildOffset(page) - getRelativeChildOffset(page); 892 mLayoutScale = layoutScale; 893 if (scaled > 0) { 894 mWallpaperScrollRatio = (1.0f * unscaled) / scaled; 895 } else { 896 mWallpaperScrollRatio = 1f; 897 } 898 } 899 900 class WallpaperOffsetInterpolator { 901 float mFinalHorizontalWallpaperOffset = 0.0f; 902 float mFinalVerticalWallpaperOffset = 0.5f; 903 float mHorizontalWallpaperOffset = 0.0f; 904 float mVerticalWallpaperOffset = 0.5f; 905 long mLastWallpaperOffsetUpdateTime; 906 boolean mIsMovingFast; 907 boolean mOverrideHorizontalCatchupConstant; 908 float mHorizontalCatchupConstant = 0.35f; 909 float mVerticalCatchupConstant = 0.35f; 910 911 public WallpaperOffsetInterpolator() { 912 } 913 914 public void setOverrideHorizontalCatchupConstant(boolean override) { 915 mOverrideHorizontalCatchupConstant = override; 916 } 917 918 public void setHorizontalCatchupConstant(float f) { 919 mHorizontalCatchupConstant = f; 920 } 921 922 public void setVerticalCatchupConstant(float f) { 923 mVerticalCatchupConstant = f; 924 } 925 926 public boolean computeScrollOffset() { 927 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 928 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 929 mIsMovingFast = false; 930 return false; 931 } 932 boolean isLandscape = mDisplayWidth > mDisplayHeight; 933 934 long currentTime = System.currentTimeMillis(); 935 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 936 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 937 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 938 939 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 940 if (!mIsMovingFast && xdiff > 0.07) { 941 mIsMovingFast = true; 942 } 943 944 float fractionToCatchUpIn1MsHorizontal; 945 if (mOverrideHorizontalCatchupConstant) { 946 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 947 } else if (mIsMovingFast) { 948 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 949 } else { 950 // slow 951 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 952 } 953 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 954 955 fractionToCatchUpIn1MsHorizontal /= 33f; 956 fractionToCatchUpIn1MsVertical /= 33f; 957 958 final float UPDATE_THRESHOLD = 0.00001f; 959 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 960 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 961 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 962 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 963 964 // Don't have any lag between workspace and wallpaper on non-large devices 965 if (!LauncherApplication.isScreenLarge() || jumpToFinalValue) { 966 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 967 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 968 } else { 969 float percentToCatchUpVertical = 970 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 971 float percentToCatchUpHorizontal = 972 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 973 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 974 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 975 } 976 977 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 978 return true; 979 } 980 981 public float getCurrX() { 982 return mHorizontalWallpaperOffset; 983 } 984 985 public float getFinalX() { 986 return mFinalHorizontalWallpaperOffset; 987 } 988 989 public float getCurrY() { 990 return mVerticalWallpaperOffset; 991 } 992 993 public float getFinalY() { 994 return mFinalVerticalWallpaperOffset; 995 } 996 997 public void setFinalX(float x) { 998 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 999 } 1000 1001 public void setFinalY(float y) { 1002 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 1003 } 1004 1005 public void jumpToFinal() { 1006 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 1007 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 1008 } 1009 } 1010 1011 @Override 1012 public void computeScroll() { 1013 super.computeScroll(); 1014 syncWallpaperOffsetWithScroll(); 1015 } 1016 1017 void showOutlines() { 1018 if (!isSmall() && !mIsSwitchingState) { 1019 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1020 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1021 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 1022 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 1023 mChildrenOutlineFadeInAnimation.start(); 1024 } 1025 } 1026 1027 void hideOutlines() { 1028 if (!isSmall() && !mIsSwitchingState) { 1029 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1030 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1031 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 1032 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 1033 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 1034 mChildrenOutlineFadeOutAnimation.start(); 1035 } 1036 } 1037 1038 public void showOutlinesTemporarily() { 1039 if (!mIsPageMoving && !isTouchActive()) { 1040 snapToPage(mCurrentPage); 1041 } 1042 } 1043 1044 public void setChildrenOutlineAlpha(float alpha) { 1045 mChildrenOutlineAlpha = alpha; 1046 for (int i = 0; i < getChildCount(); i++) { 1047 CellLayout cl = (CellLayout) getChildAt(i); 1048 cl.setBackgroundAlpha(alpha); 1049 } 1050 } 1051 1052 public float getChildrenOutlineAlpha() { 1053 return mChildrenOutlineAlpha; 1054 } 1055 1056 void disableBackground() { 1057 mDrawBackground = false; 1058 } 1059 void enableBackground() { 1060 mDrawBackground = true; 1061 } 1062 1063 private void animateBackgroundGradient(float finalAlpha, boolean animated) { 1064 if (mBackground == null) return; 1065 if (mBackgroundFadeInAnimation != null) { 1066 mBackgroundFadeInAnimation.cancel(); 1067 mBackgroundFadeInAnimation = null; 1068 } 1069 if (mBackgroundFadeOutAnimation != null) { 1070 mBackgroundFadeOutAnimation.cancel(); 1071 mBackgroundFadeOutAnimation = null; 1072 } 1073 float startAlpha = getBackgroundAlpha(); 1074 if (finalAlpha != startAlpha) { 1075 if (animated) { 1076 mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(startAlpha, finalAlpha); 1077 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1078 public void onAnimationUpdate(ValueAnimator animation) { 1079 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1080 } 1081 }); 1082 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1083 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1084 mBackgroundFadeOutAnimation.start(); 1085 } else { 1086 setBackgroundAlpha(finalAlpha); 1087 } 1088 } 1089 } 1090 1091 public void setBackgroundAlpha(float alpha) { 1092 if (alpha != mBackgroundAlpha) { 1093 mBackgroundAlpha = alpha; 1094 invalidate(); 1095 } 1096 } 1097 1098 public float getBackgroundAlpha() { 1099 return mBackgroundAlpha; 1100 } 1101 1102 /** 1103 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 1104 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 1105 * as being larger. This method computes what offset the rotated view should be translated 1106 * in order to minimize this perceived gap. 1107 * @param degrees Angle of the view 1108 * @param width Width of the view 1109 * @param height Height of the view 1110 * @return Offset to be used in a View.setTranslationX() call 1111 */ 1112 private float getOffsetXForRotation(float degrees, int width, int height) { 1113 mMatrix.reset(); 1114 mCamera.save(); 1115 mCamera.rotateY(Math.abs(degrees)); 1116 mCamera.getMatrix(mMatrix); 1117 mCamera.restore(); 1118 1119 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 1120 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 1121 mTempFloat2[0] = width; 1122 mTempFloat2[1] = height; 1123 mMatrix.mapPoints(mTempFloat2); 1124 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 1125 } 1126 1127 float backgroundAlphaInterpolator(float r) { 1128 float pivotA = 0.1f; 1129 float pivotB = 0.4f; 1130 if (r < pivotA) { 1131 return 0; 1132 } else if (r > pivotB) { 1133 return 1.0f; 1134 } else { 1135 return (r - pivotA)/(pivotB - pivotA); 1136 } 1137 } 1138 1139 float overScrollBackgroundAlphaInterpolator(float r) { 1140 float threshold = 0.08f; 1141 1142 if (r > mOverScrollMaxBackgroundAlpha) { 1143 mOverScrollMaxBackgroundAlpha = r; 1144 } else if (r < mOverScrollMaxBackgroundAlpha) { 1145 r = mOverScrollMaxBackgroundAlpha; 1146 } 1147 1148 return Math.min(r / threshold, 1.0f); 1149 } 1150 1151 private void screenScrolledLargeUI(int screenCenter) { 1152 if (isSwitchingState()) return; 1153 boolean isInOverscroll = false; 1154 for (int i = 0; i < getChildCount(); i++) { 1155 CellLayout cl = (CellLayout) getChildAt(i); 1156 if (cl != null) { 1157 float scrollProgress = getScrollProgress(screenCenter, cl, i); 1158 float rotation = WORKSPACE_ROTATION * scrollProgress; 1159 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1160 1161 // If the current page (i) is being over scrolled, we use a different 1162 // set of rules for setting the background alpha multiplier. 1163 if (!isSmall()) { 1164 if ((mOverScrollX < 0 && i == 0) || (mOverScrollX > mMaxScrollX && 1165 i == getChildCount() -1)) { 1166 isInOverscroll = true; 1167 rotation *= -1; 1168 cl.setBackgroundAlphaMultiplier( 1169 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 1170 mOverScrollPageIndex = i; 1171 cl.setOverScrollAmount(Math.abs(scrollProgress), i == 0); 1172 cl.setPivotX(cl.getMeasuredWidth() * (i == 0 ? 0.75f : 0.25f)); 1173 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1174 cl.setOverscrollTransformsDirty(true); 1175 } else if (mOverScrollPageIndex != i) { 1176 cl.setBackgroundAlphaMultiplier( 1177 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1178 } 1179 } 1180 cl.setTranslationX(translationX); 1181 cl.setRotationY(rotation); 1182 if (mFadeInAdjacentScreens && !isSmall()) { 1183 float alpha = 1 - Math.abs(scrollProgress); 1184 cl.setAlpha(alpha); 1185 } 1186 } 1187 } 1188 if (!isSwitchingState() && !isInOverscroll) { 1189 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1190 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1191 } 1192 invalidate(); 1193 } 1194 1195 private void screenScrolledStandardUI(int screenCenter) { 1196 if (mOverScrollX < 0 || mOverScrollX > mMaxScrollX) { 1197 int index = mOverScrollX < 0 ? 0 : getChildCount() - 1; 1198 CellLayout cl = (CellLayout) getChildAt(index); 1199 float scrollProgress = getScrollProgress(screenCenter, cl, index); 1200 cl.setOverScrollAmount(Math.abs(scrollProgress), index == 0); 1201 float rotation = - WORKSPACE_OVERSCROLL_ROTATION * scrollProgress; 1202 cl.setCameraDistance(mDensity * CAMERA_DISTANCE); 1203 cl.setPivotX(cl.getMeasuredWidth() * (index == 0 ? 0.75f : 0.25f)); 1204 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1205 cl.setRotationY(rotation); 1206 cl.setOverscrollTransformsDirty(true); 1207 setFadeForOverScroll(Math.abs(scrollProgress)); 1208 } else { 1209 if (mOverscrollFade != 0) { 1210 setFadeForOverScroll(0); 1211 } 1212 // We don't want to mess with the translations during transitions 1213 if (!isSwitchingState()) { 1214 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1215 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1216 } 1217 } 1218 } 1219 1220 @Override 1221 protected void screenScrolled(int screenCenter) { 1222 if (LauncherApplication.isScreenLarge()) { 1223 // We don't call super.screenScrolled() here because we handle the adjacent pages alpha 1224 // ourselves (for efficiency), and there are no scrolling indicators to update. 1225 screenScrolledLargeUI(screenCenter); 1226 } else { 1227 super.screenScrolled(screenCenter); 1228 screenScrolledStandardUI(screenCenter); 1229 } 1230 } 1231 1232 @Override 1233 protected void overScroll(float amount) { 1234 if (LauncherApplication.isScreenLarge()) { 1235 dampedOverScroll(amount); 1236 } else { 1237 acceleratedOverScroll(amount); 1238 } 1239 } 1240 1241 protected void onAttachedToWindow() { 1242 super.onAttachedToWindow(); 1243 mWindowToken = getWindowToken(); 1244 computeScroll(); 1245 mDragController.setWindowToken(mWindowToken); 1246 } 1247 1248 protected void onDetachedFromWindow() { 1249 mWindowToken = null; 1250 } 1251 1252 @Override 1253 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1254 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1255 mUpdateWallpaperOffsetImmediately = true; 1256 } 1257 super.onLayout(changed, left, top, right, bottom); 1258 } 1259 1260 @Override 1261 protected void onDraw(Canvas canvas) { 1262 updateWallpaperOffsets(); 1263 1264 // Draw the background gradient if necessary 1265 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1266 int alpha = (int) (mBackgroundAlpha * 255); 1267 mBackground.setAlpha(alpha); 1268 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1269 getMeasuredHeight()); 1270 mBackground.draw(canvas); 1271 } 1272 1273 super.onDraw(canvas); 1274 } 1275 1276 boolean isDrawingBackgroundGradient() { 1277 return (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground); 1278 } 1279 1280 @Override 1281 protected void dispatchDraw(Canvas canvas) { 1282 super.dispatchDraw(canvas); 1283 1284 if (mInScrollArea && !LauncherApplication.isScreenLarge()) { 1285 final int width = getWidth(); 1286 final int height = getHeight(); 1287 final int pageHeight = getChildAt(0).getHeight(); 1288 1289 // Set the height of the outline to be the height of the page 1290 final int offset = (height - pageHeight - mPaddingTop - mPaddingBottom) / 2; 1291 final int paddingTop = mPaddingTop + offset; 1292 final int paddingBottom = mPaddingBottom + offset; 1293 1294 final int page = (mNextPage != INVALID_PAGE ? mNextPage : mCurrentPage); 1295 final CellLayout leftPage = (CellLayout) getChildAt(page - 1); 1296 final CellLayout rightPage = (CellLayout) getChildAt(page + 1); 1297 1298 if (leftPage != null && leftPage.getIsDragOverlapping()) { 1299 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left_holo); 1300 d.setBounds(mScrollX, paddingTop, mScrollX + d.getIntrinsicWidth(), 1301 height - paddingBottom); 1302 d.draw(canvas); 1303 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 1304 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right_holo); 1305 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), paddingTop, mScrollX + width, 1306 height - paddingBottom); 1307 d.draw(canvas); 1308 } 1309 } 1310 } 1311 1312 @Override 1313 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1314 if (!mLauncher.isAllAppsVisible()) { 1315 final Folder openFolder = getOpenFolder(); 1316 if (openFolder != null) { 1317 return openFolder.requestFocus(direction, previouslyFocusedRect); 1318 } else { 1319 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1320 } 1321 } 1322 return false; 1323 } 1324 1325 @Override 1326 public int getDescendantFocusability() { 1327 if (isSmall()) { 1328 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1329 } 1330 return super.getDescendantFocusability(); 1331 } 1332 1333 @Override 1334 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1335 if (!mLauncher.isAllAppsVisible()) { 1336 final Folder openFolder = getOpenFolder(); 1337 if (openFolder != null) { 1338 openFolder.addFocusables(views, direction); 1339 } else { 1340 super.addFocusables(views, direction, focusableMode); 1341 } 1342 } 1343 } 1344 1345 public boolean isSmall() { 1346 return mState == State.SMALL || mState == State.SPRING_LOADED; 1347 } 1348 1349 void enableChildrenCache(int fromPage, int toPage) { 1350 if (fromPage > toPage) { 1351 final int temp = fromPage; 1352 fromPage = toPage; 1353 toPage = temp; 1354 } 1355 1356 final int screenCount = getChildCount(); 1357 1358 fromPage = Math.max(fromPage, 0); 1359 toPage = Math.min(toPage, screenCount - 1); 1360 1361 for (int i = fromPage; i <= toPage; i++) { 1362 final CellLayout layout = (CellLayout) getChildAt(i); 1363 layout.setChildrenDrawnWithCacheEnabled(true); 1364 layout.setChildrenDrawingCacheEnabled(true); 1365 } 1366 } 1367 1368 void clearChildrenCache() { 1369 final int screenCount = getChildCount(); 1370 for (int i = 0; i < screenCount; i++) { 1371 final CellLayout layout = (CellLayout) getChildAt(i); 1372 layout.setChildrenDrawnWithCacheEnabled(false); 1373 // In software mode, we don't want the items to continue to be drawn into bitmaps 1374 if (!isHardwareAccelerated()) { 1375 layout.setChildrenDrawingCacheEnabled(false); 1376 } 1377 } 1378 } 1379 1380 private void updateChildrenLayersEnabled() { 1381 boolean small = isSmall() || mIsSwitchingState; 1382 boolean dragging = mAnimatingViewIntoPlace || mIsDragOccuring; 1383 boolean enableChildrenLayers = small || dragging || isPageMoving(); 1384 1385 if (enableChildrenLayers != mChildrenLayersEnabled) { 1386 mChildrenLayersEnabled = enableChildrenLayers; 1387 for (int i = 0; i < getPageCount(); i++) { 1388 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(mChildrenLayersEnabled); 1389 } 1390 } 1391 } 1392 1393 protected void onWallpaperTap(MotionEvent ev) { 1394 final int[] position = mTempCell; 1395 getLocationOnScreen(position); 1396 1397 int pointerIndex = ev.getActionIndex(); 1398 position[0] += (int) ev.getX(pointerIndex); 1399 position[1] += (int) ev.getY(pointerIndex); 1400 1401 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1402 ev.getAction() == MotionEvent.ACTION_UP 1403 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1404 position[0], position[1], 0, null); 1405 } 1406 1407 /* 1408 * This interpolator emulates the rate at which the perceived scale of an object changes 1409 * as its distance from a camera increases. When this interpolator is applied to a scale 1410 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1411 * from the camera. 1412 */ 1413 static class ZInterpolator implements TimeInterpolator { 1414 private float focalLength; 1415 1416 public ZInterpolator(float foc) { 1417 focalLength = foc; 1418 } 1419 1420 public float getInterpolation(float input) { 1421 return (1.0f - focalLength / (focalLength + input)) / 1422 (1.0f - focalLength / (focalLength + 1.0f)); 1423 } 1424 } 1425 1426 /* 1427 * The exact reverse of ZInterpolator. 1428 */ 1429 static class InverseZInterpolator implements TimeInterpolator { 1430 private ZInterpolator zInterpolator; 1431 public InverseZInterpolator(float foc) { 1432 zInterpolator = new ZInterpolator(foc); 1433 } 1434 public float getInterpolation(float input) { 1435 return 1 - zInterpolator.getInterpolation(1 - input); 1436 } 1437 } 1438 1439 /* 1440 * ZInterpolator compounded with an ease-out. 1441 */ 1442 static class ZoomOutInterpolator implements TimeInterpolator { 1443 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(0.75f); 1444 private final ZInterpolator zInterpolator = new ZInterpolator(0.13f); 1445 1446 public float getInterpolation(float input) { 1447 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1448 } 1449 } 1450 1451 /* 1452 * InvereZInterpolator compounded with an ease-out. 1453 */ 1454 static class ZoomInInterpolator implements TimeInterpolator { 1455 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1456 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1457 1458 public float getInterpolation(float input) { 1459 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1460 } 1461 } 1462 1463 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1464 1465 /* 1466 * 1467 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1468 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1469 * 1470 * These methods mark the appropriate pages as accepting drops (which alters their visual 1471 * appearance). 1472 * 1473 */ 1474 public void onDragStartedWithItem(View v) { 1475 final Canvas canvas = new Canvas(); 1476 1477 // We need to add extra padding to the bitmap to make room for the glow effect 1478 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1479 1480 // The outline is used to visualize where the item will land if dropped 1481 mDragOutline = createDragOutline(v, canvas, bitmapPadding); 1482 } 1483 1484 public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, Paint alphaClipPaint) { 1485 final Canvas canvas = new Canvas(); 1486 1487 // We need to add extra padding to the bitmap to make room for the glow effect 1488 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1489 1490 int[] size = estimateItemSize(info.spanX, info.spanY, info, false); 1491 1492 // The outline is used to visualize where the item will land if dropped 1493 mDragOutline = createDragOutline(b, canvas, bitmapPadding, size[0], size[1], alphaClipPaint); 1494 } 1495 1496 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1497 // never dragged over 1498 public void onDragStopped(boolean success) { 1499 // In the success case, DragController has already called onDragExit() 1500 if (!success) { 1501 doDragExit(null); 1502 } 1503 } 1504 1505 public void exitWidgetResizeMode() { 1506 DragLayer dragLayer = mLauncher.getDragLayer(); 1507 dragLayer.clearAllResizeFrames(); 1508 } 1509 1510 private void initAnimationArrays() { 1511 final int childCount = getChildCount(); 1512 if (mOldTranslationXs != null) return; 1513 mOldTranslationXs = new float[childCount]; 1514 mOldTranslationYs = new float[childCount]; 1515 mOldScaleXs = new float[childCount]; 1516 mOldScaleYs = new float[childCount]; 1517 mOldBackgroundAlphas = new float[childCount]; 1518 mOldBackgroundAlphaMultipliers = new float[childCount]; 1519 mOldAlphas = new float[childCount]; 1520 mOldRotationYs = new float[childCount]; 1521 mNewTranslationXs = new float[childCount]; 1522 mNewTranslationYs = new float[childCount]; 1523 mNewScaleXs = new float[childCount]; 1524 mNewScaleYs = new float[childCount]; 1525 mNewBackgroundAlphas = new float[childCount]; 1526 mNewBackgroundAlphaMultipliers = new float[childCount]; 1527 mNewAlphas = new float[childCount]; 1528 mNewRotationYs = new float[childCount]; 1529 } 1530 1531 Animator getChangeStateAnimation(final State state, boolean animated) { 1532 return getChangeStateAnimation(state, animated, 0); 1533 } 1534 1535 Animator getChangeStateAnimation(final State state, boolean animated, int delay) { 1536 if (mState == state) { 1537 return null; 1538 } 1539 1540 // Initialize animation arrays for the first time if necessary 1541 initAnimationArrays(); 1542 1543 AnimatorSet anim = animated ? new AnimatorSet() : null; 1544 1545 // Stop any scrolling, move to the current page right away 1546 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1547 1548 final State oldState = mState; 1549 final boolean oldStateIsNormal = (oldState == State.NORMAL); 1550 final boolean oldStateIsSmall = (oldState == State.SMALL); 1551 mState = state; 1552 final boolean stateIsNormal = (state == State.NORMAL); 1553 final boolean stateIsSpringLoaded = (state == State.SPRING_LOADED); 1554 final boolean stateIsSmall = (state == State.SMALL); 1555 float finalScaleFactor = 1.0f; 1556 float finalBackgroundAlpha = stateIsSpringLoaded ? 1.0f : 0f; 1557 float translationX = 0; 1558 float translationY = 0; 1559 boolean zoomIn = true; 1560 1561 if (state != State.NORMAL) { 1562 finalScaleFactor = mSpringLoadedShrinkFactor - (stateIsSmall ? 0.1f : 0); 1563 if (oldStateIsNormal && stateIsSmall) { 1564 zoomIn = false; 1565 setLayoutScale(finalScaleFactor); 1566 updateChildrenLayersEnabled(); 1567 } else { 1568 finalBackgroundAlpha = 1.0f; 1569 setLayoutScale(finalScaleFactor); 1570 } 1571 } else { 1572 setLayoutScale(1.0f); 1573 } 1574 1575 final int duration = zoomIn ? 1576 getResources().getInteger(R.integer.config_workspaceUnshrinkTime) : 1577 getResources().getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1578 for (int i = 0; i < getChildCount(); i++) { 1579 final CellLayout cl = (CellLayout) getChildAt(i); 1580 float rotation = 0f; 1581 float initialAlpha = cl.getAlpha(); 1582 float finalAlphaMultiplierValue = 1f; 1583 float finalAlpha = (!mFadeInAdjacentScreens || stateIsSpringLoaded || 1584 (i == mCurrentPage)) ? 1f : 0f; 1585 1586 // Determine the pages alpha during the state transition 1587 if ((oldStateIsSmall && stateIsNormal) || 1588 (oldStateIsNormal && stateIsSmall)) { 1589 // To/from workspace - only show the current page unless the transition is not 1590 // animated and the animation end callback below doesn't run 1591 if (i == mCurrentPage || !animated) { 1592 finalAlpha = 1f; 1593 finalAlphaMultiplierValue = 0f; 1594 } else { 1595 initialAlpha = 0f; 1596 finalAlpha = 0f; 1597 } 1598 } 1599 1600 // Update the rotation of the screen (don't apply rotation on Phone UI) 1601 if (LauncherApplication.isScreenLarge()) { 1602 if (i < mCurrentPage) { 1603 rotation = WORKSPACE_ROTATION; 1604 } else if (i > mCurrentPage) { 1605 rotation = -WORKSPACE_ROTATION; 1606 } 1607 } 1608 1609 // If the screen is not xlarge, then don't rotate the CellLayouts 1610 // NOTE: If we don't update the side pages alpha, then we should not hide the side 1611 // pages. see unshrink(). 1612 if (LauncherApplication.isScreenLarge()) { 1613 translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1614 } 1615 1616 mOldAlphas[i] = initialAlpha; 1617 mNewAlphas[i] = finalAlpha; 1618 if (animated) { 1619 mOldTranslationXs[i] = cl.getTranslationX(); 1620 mOldTranslationYs[i] = cl.getTranslationY(); 1621 mOldScaleXs[i] = cl.getScaleX(); 1622 mOldScaleYs[i] = cl.getScaleY(); 1623 mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1624 mOldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1625 mOldRotationYs[i] = cl.getRotationY(); 1626 1627 mNewTranslationXs[i] = translationX; 1628 mNewTranslationYs[i] = translationY; 1629 mNewScaleXs[i] = finalScaleFactor; 1630 mNewScaleYs[i] = finalScaleFactor; 1631 mNewBackgroundAlphas[i] = finalBackgroundAlpha; 1632 mNewBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1633 mNewRotationYs[i] = rotation; 1634 } else { 1635 cl.setTranslationX(translationX); 1636 cl.setTranslationY(translationY); 1637 cl.setScaleX(finalScaleFactor); 1638 cl.setScaleY(finalScaleFactor); 1639 cl.setBackgroundAlpha(finalBackgroundAlpha); 1640 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1641 cl.setAlpha(finalAlpha); 1642 cl.setRotationY(rotation); 1643 mChangeStateAnimationListener.onAnimationEnd(null); 1644 } 1645 } 1646 1647 if (animated) { 1648 anim.addListener(new AnimatorListenerAdapter() { 1649 @Override 1650 public void onAnimationEnd(android.animation.Animator animation) { 1651 // The above code to determine initialAlpha and finalAlpha will ensure that only 1652 // the current page is visible during (and subsequently, after) the transition 1653 // animation. If fade adjacent pages is disabled, then re-enable the page 1654 // visibility after the transition animation. 1655 if (!mFadeInAdjacentScreens) { 1656 for (int i = 0; i < getChildCount(); i++) { 1657 final CellLayout cl = (CellLayout) getChildAt(i); 1658 cl.setAlpha(1f); 1659 } 1660 } 1661 } 1662 }); 1663 for (int index = 0; index < getChildCount(); index++) { 1664 final int i = index; 1665 final CellLayout cl = (CellLayout) getChildAt(i); 1666 if (mOldAlphas[i] == 0 && mNewAlphas[i] == 0) { 1667 cl.setTranslationX(mNewTranslationXs[i]); 1668 cl.setTranslationY(mNewTranslationYs[i]); 1669 cl.setScaleX(mNewScaleXs[i]); 1670 cl.setScaleY(mNewScaleYs[i]); 1671 cl.setBackgroundAlpha(mNewBackgroundAlphas[i]); 1672 cl.setBackgroundAlphaMultiplier(mNewBackgroundAlphaMultipliers[i]); 1673 cl.setAlpha(mNewAlphas[i]); 1674 cl.setRotationY(mNewRotationYs[i]); 1675 } else { 1676 LauncherViewPropertyAnimator a = new LauncherViewPropertyAnimator(cl); 1677 a.translationX(mNewTranslationXs[i]) 1678 .translationY(mNewTranslationYs[i]) 1679 .scaleX(mNewScaleXs[i]) 1680 .scaleY(mNewScaleYs[i]) 1681 .setDuration(duration) 1682 .setInterpolator(mZoomInInterpolator); 1683 if (mOldAlphas[i] != mNewAlphas[i]) { 1684 a.alpha(mNewAlphas[i]); 1685 } 1686 anim.play(a); 1687 if (mOldRotationYs[i] != 0 || mNewRotationYs[i] != 0) { 1688 ValueAnimator rotate = ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1689 rotate.setInterpolator(new DecelerateInterpolator(2.0f)); 1690 rotate.addUpdateListener(new LauncherAnimatorUpdateListener() { 1691 public void onAnimationUpdate(float a, float b) { 1692 cl.setRotationY(a * mOldRotationYs[i] + b * mNewRotationYs[i]); 1693 } 1694 }); 1695 anim.play(rotate); 1696 } 1697 if (mOldBackgroundAlphas[i] != 0 || 1698 mNewBackgroundAlphas[i] != 0 || 1699 mOldBackgroundAlphaMultipliers[i] != 0 || 1700 mNewBackgroundAlphaMultipliers[i] != 0) { 1701 ValueAnimator bgAnim = ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1702 bgAnim.setInterpolator(mZoomInInterpolator); 1703 bgAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1704 public void onAnimationUpdate(float a, float b) { 1705 cl.setBackgroundAlpha( 1706 a * mOldBackgroundAlphas[i] + 1707 b * mNewBackgroundAlphas[i]); 1708 cl.setBackgroundAlphaMultiplier( 1709 a * mOldBackgroundAlphaMultipliers[i] + 1710 b * mNewBackgroundAlphaMultipliers[i]); 1711 } 1712 }); 1713 anim.play(bgAnim); 1714 } 1715 } 1716 } 1717 anim.setStartDelay(delay); 1718 // If we call this when we're not animated, onAnimationEnd is never called on 1719 // the listener; make sure we only use the listener when we're actually animating 1720 anim.addListener(mChangeStateAnimationListener); 1721 } 1722 1723 if (stateIsSpringLoaded) { 1724 // Right now we're covered by Apps Customize 1725 // Show the background gradient immediately, so the gradient will 1726 // be showing once AppsCustomize disappears 1727 animateBackgroundGradient(getResources().getInteger( 1728 R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, false); 1729 } else { 1730 // Fade the background gradient away 1731 animateBackgroundGradient(0f, true); 1732 } 1733 return anim; 1734 } 1735 1736 /** 1737 * Draw the View v into the given Canvas. 1738 * 1739 * @param v the view to draw 1740 * @param destCanvas the canvas to draw on 1741 * @param padding the horizontal and vertical padding to use when drawing 1742 */ 1743 private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { 1744 final Rect clipRect = mTempRect; 1745 v.getDrawingRect(clipRect); 1746 1747 boolean textVisible = false; 1748 1749 destCanvas.save(); 1750 if (v instanceof TextView && pruneToDrawable) { 1751 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1752 clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); 1753 destCanvas.translate(padding / 2, padding / 2); 1754 d.draw(destCanvas); 1755 } else { 1756 if (v instanceof FolderIcon) { 1757 // For FolderIcons the text can bleed into the icon area, and so we need to 1758 // hide the text completely (which can't be achieved by clipping). 1759 if (((FolderIcon) v).getTextVisible()) { 1760 ((FolderIcon) v).setTextVisible(false); 1761 textVisible = true; 1762 } 1763 } else if (v instanceof BubbleTextView) { 1764 final BubbleTextView tv = (BubbleTextView) v; 1765 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1766 tv.getLayout().getLineTop(0); 1767 } else if (v instanceof TextView) { 1768 final TextView tv = (TextView) v; 1769 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1770 tv.getLayout().getLineTop(0); 1771 } 1772 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1773 destCanvas.clipRect(clipRect, Op.REPLACE); 1774 v.draw(destCanvas); 1775 1776 // Restore text visibility of FolderIcon if necessary 1777 if (textVisible) { 1778 ((FolderIcon) v).setTextVisible(true); 1779 } 1780 } 1781 destCanvas.restore(); 1782 } 1783 1784 /** 1785 * Returns a new bitmap to show when the given View is being dragged around. 1786 * Responsibility for the bitmap is transferred to the caller. 1787 */ 1788 public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1789 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1790 Bitmap b; 1791 1792 if (v instanceof TextView) { 1793 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1794 b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, 1795 d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); 1796 } else { 1797 b = Bitmap.createBitmap( 1798 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1799 } 1800 1801 canvas.setBitmap(b); 1802 drawDragView(v, canvas, padding, true); 1803 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 1804 canvas.setBitmap(null); 1805 1806 return b; 1807 } 1808 1809 /** 1810 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1811 * Responsibility for the bitmap is transferred to the caller. 1812 */ 1813 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1814 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1815 final Bitmap b = Bitmap.createBitmap( 1816 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1817 1818 canvas.setBitmap(b); 1819 drawDragView(v, canvas, padding, true); 1820 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1821 canvas.setBitmap(null); 1822 return b; 1823 } 1824 1825 /** 1826 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1827 * Responsibility for the bitmap is transferred to the caller. 1828 */ 1829 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h, 1830 Paint alphaClipPaint) { 1831 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1832 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1833 canvas.setBitmap(b); 1834 1835 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 1836 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 1837 (h - padding) / (float) orig.getHeight()); 1838 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 1839 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 1840 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 1841 1842 // center the image 1843 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 1844 1845 canvas.drawBitmap(orig, src, dst, null); 1846 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor, 1847 alphaClipPaint); 1848 canvas.setBitmap(null); 1849 1850 return b; 1851 } 1852 1853 /** 1854 * Creates a drag outline to represent a drop (that we don't have the actual information for 1855 * yet). May be changed in the future to alter the drop outline slightly depending on the 1856 * clip description mime data. 1857 */ 1858 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 1859 Resources r = getResources(); 1860 final int outlineColor = r.getColor(android.R.color.holo_blue_light); 1861 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 1862 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 1863 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 1864 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 1865 final Bitmap b = Bitmap.createBitmap( 1866 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 1867 1868 canvas.setBitmap(b); 1869 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 1870 rectRadius, rectRadius, mExternalDragOutlinePaint); 1871 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1872 canvas.setBitmap(null); 1873 return b; 1874 } 1875 1876 void startDrag(CellLayout.CellInfo cellInfo) { 1877 View child = cellInfo.cell; 1878 1879 // Make sure the drag was started by a long press as opposed to a long click. 1880 if (!child.isInTouchMode()) { 1881 return; 1882 } 1883 1884 mDragInfo = cellInfo; 1885 child.setVisibility(GONE); 1886 1887 child.clearFocus(); 1888 child.setPressed(false); 1889 1890 final Canvas canvas = new Canvas(); 1891 1892 // We need to add extra padding to the bitmap to make room for the glow effect 1893 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1894 1895 // The outline is used to visualize where the item will land if dropped 1896 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 1897 beginDragShared(child, this); 1898 } 1899 1900 public void beginDragShared(View child, DragSource source) { 1901 Resources r = getResources(); 1902 1903 // We need to add extra padding to the bitmap to make room for the glow effect 1904 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1905 1906 // The drag bitmap follows the touch point around on the screen 1907 final Bitmap b = createDragBitmap(child, new Canvas(), bitmapPadding); 1908 1909 final int bmpWidth = b.getWidth(); 1910 1911 mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 1912 final int dragLayerX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 1913 int dragLayerY = mTempXY[1] - bitmapPadding / 2; 1914 1915 Point dragVisualizeOffset = null; 1916 Rect dragRect = null; 1917 if (child instanceof BubbleTextView || child instanceof PagedViewIcon) { 1918 int iconSize = r.getDimensionPixelSize(R.dimen.app_icon_size); 1919 int iconPaddingTop = r.getDimensionPixelSize(R.dimen.app_icon_padding_top); 1920 int top = child.getPaddingTop(); 1921 int left = (bmpWidth - iconSize) / 2; 1922 int right = left + iconSize; 1923 int bottom = top + iconSize; 1924 dragLayerY += top; 1925 // Note: The drag region is used to calculate drag layer offsets, but the 1926 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 1927 dragVisualizeOffset = new Point(-bitmapPadding / 2, iconPaddingTop - bitmapPadding / 2); 1928 dragRect = new Rect(left, top, right, bottom); 1929 } else if (child instanceof FolderIcon) { 1930 int previewSize = r.getDimensionPixelSize(R.dimen.folder_preview_size); 1931 dragRect = new Rect(0, 0, child.getWidth(), previewSize); 1932 } 1933 1934 // Clear the pressed state if necessary 1935 if (child instanceof BubbleTextView) { 1936 BubbleTextView icon = (BubbleTextView) child; 1937 icon.clearPressedOrFocusedBackground(); 1938 } 1939 1940 mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 1941 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect); 1942 b.recycle(); 1943 1944 // Show the scrolling indicator when you pick up an item 1945 showScrollingIndicator(false); 1946 } 1947 1948 void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, int screen, 1949 int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { 1950 View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); 1951 1952 final int[] cellXY = new int[2]; 1953 target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1954 addInScreen(view, container, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1955 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, cellXY[0], 1956 cellXY[1]); 1957 } 1958 1959 public boolean transitionStateShouldAllowDrop() { 1960 return ((!isSwitchingState() || mTransitionProgress > 0.5f) && mState != State.SMALL); 1961 } 1962 1963 /** 1964 * {@inheritDoc} 1965 */ 1966 public boolean acceptDrop(DragObject d) { 1967 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1968 if (d.dragSource != this) { 1969 // Don't accept the drop if we're not over a screen at time of drop 1970 if (mDragTargetLayout == null) { 1971 return false; 1972 } 1973 if (!transitionStateShouldAllowDrop()) return false; 1974 1975 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 1976 d.dragView, mDragViewVisualCenter); 1977 1978 // We want the point to be mapped to the dragTarget. 1979 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 1980 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 1981 } else { 1982 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 1983 } 1984 1985 int spanX = 1; 1986 int spanY = 1; 1987 View ignoreView = null; 1988 if (mDragInfo != null) { 1989 final CellLayout.CellInfo dragCellInfo = mDragInfo; 1990 spanX = dragCellInfo.spanX; 1991 spanY = dragCellInfo.spanY; 1992 ignoreView = dragCellInfo.cell; 1993 } else { 1994 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 1995 spanX = dragInfo.spanX; 1996 spanY = dragInfo.spanY; 1997 } 1998 1999 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2000 (int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell); 2001 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, true)) { 2002 return true; 2003 } 2004 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, 2005 mTargetCell)) { 2006 return true; 2007 } 2008 2009 // Don't accept the drop if there's no room for the item 2010 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 2011 // Don't show the message if we are dropping on the AllApps button and the hotseat 2012 // is full 2013 if (mTargetCell != null && mLauncher.isHotseatLayout(mDragTargetLayout)) { 2014 Hotseat hotseat = mLauncher.getHotseat(); 2015 if (Hotseat.isAllAppsButtonRank( 2016 hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { 2017 return false; 2018 } 2019 } 2020 2021 mLauncher.showOutOfSpaceMessage(); 2022 return false; 2023 } 2024 } 2025 return true; 2026 } 2027 2028 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, 2029 boolean considerTimeout) { 2030 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2031 2032 boolean hasntMoved = false; 2033 if (mDragInfo != null) { 2034 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2035 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2036 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2037 } 2038 2039 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2040 return false; 2041 } 2042 2043 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2044 boolean willBecomeShortcut = 2045 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2046 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2047 2048 return (aboveShortcut && willBecomeShortcut); 2049 } 2050 2051 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell) { 2052 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2053 if (dropOverView instanceof FolderIcon) { 2054 FolderIcon fi = (FolderIcon) dropOverView; 2055 if (fi.acceptDrop(dragInfo)) { 2056 return true; 2057 } 2058 } 2059 return false; 2060 } 2061 2062 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2063 int[] targetCell, boolean external, DragView dragView, Runnable postAnimationRunnable) { 2064 View v = target.getChildAt(targetCell[0], targetCell[1]); 2065 boolean hasntMoved = false; 2066 if (mDragInfo != null) { 2067 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2068 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2069 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2070 } 2071 2072 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2073 mCreateUserFolderOnDrop = false; 2074 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 2075 2076 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2077 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2078 2079 if (aboveShortcut && willBecomeShortcut) { 2080 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2081 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2082 // if the drag started here, we need to remove it from the workspace 2083 if (!external) { 2084 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2085 } 2086 2087 Rect folderLocation = new Rect(); 2088 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2089 target.removeView(v); 2090 2091 FolderIcon fi = 2092 mLauncher.addFolder(target, container, screen, targetCell[0], targetCell[1]); 2093 destInfo.cellX = -1; 2094 destInfo.cellY = -1; 2095 sourceInfo.cellX = -1; 2096 sourceInfo.cellY = -1; 2097 2098 // If the dragView is null, we can't animate 2099 boolean animate = dragView != null; 2100 if (animate) { 2101 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2102 postAnimationRunnable); 2103 } else { 2104 fi.addItem(destInfo); 2105 fi.addItem(sourceInfo); 2106 } 2107 return true; 2108 } 2109 return false; 2110 } 2111 2112 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2113 DragObject d, boolean external) { 2114 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2115 if (dropOverView instanceof FolderIcon) { 2116 FolderIcon fi = (FolderIcon) dropOverView; 2117 if (fi.acceptDrop(d.dragInfo)) { 2118 fi.onDrop(d); 2119 2120 // if the drag started here, we need to remove it from the workspace 2121 if (!external) { 2122 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2123 } 2124 return true; 2125 } 2126 } 2127 return false; 2128 } 2129 2130 public void onDrop(DragObject d) { 2131 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2132 mDragViewVisualCenter); 2133 2134 // We want the point to be mapped to the dragTarget. 2135 if (mDragTargetLayout != null) { 2136 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2137 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2138 } else { 2139 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2140 } 2141 } 2142 2143 CellLayout dropTargetLayout = mDragTargetLayout; 2144 2145 int snapScreen = -1; 2146 if (d.dragSource != this) { 2147 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2148 (int) mDragViewVisualCenter[1] }; 2149 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2150 } else if (mDragInfo != null) { 2151 final View cell = mDragInfo.cell; 2152 2153 if (dropTargetLayout != null) { 2154 // Move internally 2155 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2156 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2157 long container = hasMovedIntoHotseat ? 2158 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2159 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2160 int screen = (mTargetCell[0] < 0) ? 2161 mDragInfo.screen : indexOfChild(dropTargetLayout); 2162 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2163 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2164 // First we find the cell nearest to point at which the item is 2165 // dropped, without any consideration to whether there is an item there. 2166 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2167 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2168 // If the item being dropped is a shortcut and the nearest drop 2169 // cell also contains a shortcut, then create a folder with the two shortcuts. 2170 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2171 dropTargetLayout, mTargetCell, false, d.dragView, null)) { 2172 return; 2173 } 2174 2175 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, d, false)) { 2176 return; 2177 } 2178 2179 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2180 // we need to find the nearest cell location that is vacant 2181 mTargetCell = findNearestVacantArea((int) mDragViewVisualCenter[0], 2182 (int) mDragViewVisualCenter[1], mDragInfo.spanX, mDragInfo.spanY, cell, 2183 dropTargetLayout, mTargetCell); 2184 2185 if (mCurrentPage != screen && !hasMovedIntoHotseat) { 2186 snapScreen = screen; 2187 snapToPage(screen); 2188 } 2189 2190 if (mTargetCell[0] >= 0 && mTargetCell[1] >= 0) { 2191 if (hasMovedLayouts) { 2192 // Reparent the view 2193 getParentCellLayoutForView(cell).removeView(cell); 2194 addInScreen(cell, container, screen, mTargetCell[0], mTargetCell[1], 2195 mDragInfo.spanX, mDragInfo.spanY); 2196 } 2197 2198 // update the item's position after drop 2199 final ItemInfo info = (ItemInfo) cell.getTag(); 2200 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2201 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 2202 lp.cellX = mTargetCell[0]; 2203 lp.cellY = mTargetCell[1]; 2204 cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screen, 2205 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2206 2207 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2208 cell instanceof LauncherAppWidgetHostView) { 2209 final CellLayout cellLayout = dropTargetLayout; 2210 // We post this call so that the widget has a chance to be placed 2211 // in its final location 2212 2213 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2214 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2215 if (pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2216 final Runnable resizeRunnable = new Runnable() { 2217 public void run() { 2218 DragLayer dragLayer = mLauncher.getDragLayer(); 2219 dragLayer.addResizeFrame(info, hostView, cellLayout); 2220 } 2221 }; 2222 post(new Runnable() { 2223 public void run() { 2224 if (!isPageMoving()) { 2225 resizeRunnable.run(); 2226 } else { 2227 mDelayedResizeRunnable = resizeRunnable; 2228 } 2229 } 2230 }); 2231 } 2232 } 2233 2234 LauncherModel.moveItemInDatabase(mLauncher, info, container, screen, lp.cellX, 2235 lp.cellY); 2236 } 2237 } 2238 2239 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2240 2241 // Prepare it to be animated into its new position 2242 // This must be called after the view has been re-parented 2243 final Runnable disableHardwareLayersRunnable = new Runnable() { 2244 @Override 2245 public void run() { 2246 mAnimatingViewIntoPlace = false; 2247 updateChildrenLayersEnabled(); 2248 } 2249 }; 2250 mAnimatingViewIntoPlace = true; 2251 if (d.dragView.hasDrawn()) { 2252 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2253 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2254 disableHardwareLayersRunnable, this); 2255 } else { 2256 d.deferDragViewCleanupPostAnimation = false; 2257 cell.setVisibility(VISIBLE); 2258 } 2259 parent.onDropChild(cell); 2260 } 2261 } 2262 2263 public void setFinalScrollForPageChange(int screen) { 2264 if (screen >= 0) { 2265 mSavedScrollX = getScrollX(); 2266 CellLayout cl = (CellLayout) getChildAt(screen); 2267 mSavedTranslationX = cl.getTranslationX(); 2268 mSavedRotationY = cl.getRotationY(); 2269 final int newX = getChildOffset(screen) - getRelativeChildOffset(screen); 2270 setScrollX(newX); 2271 cl.setTranslationX(0f); 2272 cl.setRotationY(0f); 2273 } 2274 } 2275 2276 public void resetFinalScrollForPageChange(int screen) { 2277 if (screen >= 0) { 2278 CellLayout cl = (CellLayout) getChildAt(screen); 2279 setScrollX(mSavedScrollX); 2280 cl.setTranslationX(mSavedTranslationX); 2281 cl.setRotationY(mSavedRotationY); 2282 } 2283 } 2284 2285 public void getViewLocationRelativeToSelf(View v, int[] location) { 2286 getLocationInWindow(location); 2287 int x = location[0]; 2288 int y = location[1]; 2289 2290 v.getLocationInWindow(location); 2291 int vX = location[0]; 2292 int vY = location[1]; 2293 2294 location[0] = vX - x; 2295 location[1] = vY - y; 2296 } 2297 2298 public void onDragEnter(DragObject d) { 2299 mDragHasEnteredWorkspace = true; 2300 if (mDragTargetLayout != null) { 2301 mDragTargetLayout.setIsDragOverlapping(false); 2302 mDragTargetLayout.onDragExit(); 2303 } 2304 mDragTargetLayout = getCurrentDropLayout(); 2305 mDragTargetLayout.setIsDragOverlapping(true); 2306 mDragTargetLayout.onDragEnter(); 2307 2308 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2309 // don't need to show the outlines 2310 if (LauncherApplication.isScreenLarge()) { 2311 showOutlines(); 2312 } 2313 } 2314 2315 private void doDragExit(DragObject d) { 2316 // Clean up folders 2317 cleanupFolderCreation(d); 2318 2319 // Reset the scroll area and previous drag target 2320 onResetScrollArea(); 2321 2322 if (mDragTargetLayout != null) { 2323 mDragTargetLayout.setIsDragOverlapping(false); 2324 mDragTargetLayout.onDragExit(); 2325 } 2326 mLastDragOverView = null; 2327 mSpringLoadedDragController.cancel(); 2328 2329 if (!mIsPageMoving) { 2330 hideOutlines(); 2331 } 2332 } 2333 2334 public void onDragExit(DragObject d) { 2335 mDragHasEnteredWorkspace = false; 2336 doDragExit(d); 2337 } 2338 2339 public DropTarget getDropTargetDelegate(DragObject d) { 2340 return null; 2341 } 2342 2343 /** 2344 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 2345 * in the returned structure related to the widgets that match the drop (or a null list if it is 2346 * a shortcut drop). If the drop is not accepted then a null structure is returned. 2347 */ 2348 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 2349 final LauncherModel model = mLauncher.getModel(); 2350 final ClipDescription desc = event.getClipDescription(); 2351 final int mimeTypeCount = desc.getMimeTypeCount(); 2352 for (int i = 0; i < mimeTypeCount; ++i) { 2353 final String mimeType = desc.getMimeType(i); 2354 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 2355 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 2356 } else { 2357 final List<WidgetMimeTypeHandlerData> widgets = 2358 model.resolveWidgetsForMimeType(mContext, mimeType); 2359 if (widgets.size() > 0) { 2360 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 2361 } 2362 } 2363 } 2364 return null; 2365 } 2366 2367 /** 2368 * Global drag and drop handler 2369 */ 2370 @Override 2371 public boolean onDragEvent(DragEvent event) { 2372 final ClipDescription desc = event.getClipDescription(); 2373 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 2374 final int[] pos = new int[2]; 2375 layout.getLocationOnScreen(pos); 2376 // We need to offset the drag coordinates to layout coordinate space 2377 final int x = (int) event.getX() - pos[0]; 2378 final int y = (int) event.getY() - pos[1]; 2379 2380 switch (event.getAction()) { 2381 case DragEvent.ACTION_DRAG_STARTED: { 2382 // Validate this drag 2383 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2384 if (test != null) { 2385 boolean isShortcut = (test.second == null); 2386 if (isShortcut) { 2387 // Check if we have enough space on this screen to add a new shortcut 2388 if (!layout.findCellForSpan(pos, 1, 1)) { 2389 mLauncher.showOutOfSpaceMessage(); 2390 return false; 2391 } 2392 } 2393 } else { 2394 // Show error message if we couldn't accept any of the items 2395 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 2396 Toast.LENGTH_SHORT).show(); 2397 return false; 2398 } 2399 2400 // Create the drag outline 2401 // We need to add extra padding to the bitmap to make room for the glow effect 2402 final Canvas canvas = new Canvas(); 2403 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2404 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 2405 2406 // Show the current page outlines to indicate that we can accept this drop 2407 showOutlines(); 2408 layout.onDragEnter(); 2409 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1, null, null); 2410 2411 return true; 2412 } 2413 case DragEvent.ACTION_DRAG_LOCATION: 2414 // Visualize the drop location 2415 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1, null, null); 2416 return true; 2417 case DragEvent.ACTION_DROP: { 2418 // Try and add any shortcuts 2419 final LauncherModel model = mLauncher.getModel(); 2420 final ClipData data = event.getClipData(); 2421 2422 // We assume that the mime types are ordered in descending importance of 2423 // representation. So we enumerate the list of mime types and alert the 2424 // user if any widgets can handle the drop. Only the most preferred 2425 // representation will be handled. 2426 pos[0] = x; 2427 pos[1] = y; 2428 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2429 if (test != null) { 2430 final int index = test.first; 2431 final List<WidgetMimeTypeHandlerData> widgets = test.second; 2432 final boolean isShortcut = (widgets == null); 2433 final String mimeType = desc.getMimeType(index); 2434 if (isShortcut) { 2435 final Intent intent = data.getItemAt(index).getIntent(); 2436 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 2437 if (info != null) { 2438 onDropExternal(new int[] { x, y }, info, layout, false); 2439 } 2440 } else { 2441 if (widgets.size() == 1) { 2442 // If there is only one item, then go ahead and add and configure 2443 // that widget 2444 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 2445 final PendingAddWidgetInfo createInfo = 2446 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 2447 mLauncher.addAppWidgetFromDrop(createInfo, 2448 LauncherSettings.Favorites.CONTAINER_DESKTOP, mCurrentPage, null, pos); 2449 } else { 2450 // Show the widget picker dialog if there is more than one widget 2451 // that can handle this data type 2452 final InstallWidgetReceiver.WidgetListAdapter adapter = 2453 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 2454 data, widgets, layout, mCurrentPage, pos); 2455 final AlertDialog.Builder builder = 2456 new AlertDialog.Builder(mContext); 2457 builder.setAdapter(adapter, adapter); 2458 builder.setCancelable(true); 2459 builder.setTitle(mContext.getString( 2460 R.string.external_drop_widget_pick_title)); 2461 builder.setIcon(R.drawable.ic_no_applications); 2462 builder.show(); 2463 } 2464 } 2465 } 2466 return true; 2467 } 2468 case DragEvent.ACTION_DRAG_ENDED: 2469 // Hide the page outlines after the drop 2470 layout.onDragExit(); 2471 hideOutlines(); 2472 return true; 2473 } 2474 return super.onDragEvent(event); 2475 } 2476 2477 /* 2478 * 2479 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2480 * coordinate space. The argument xy is modified with the return result. 2481 * 2482 */ 2483 void mapPointFromSelfToChild(View v, float[] xy) { 2484 mapPointFromSelfToChild(v, xy, null); 2485 } 2486 2487 /* 2488 * 2489 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2490 * coordinate space. The argument xy is modified with the return result. 2491 * 2492 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2493 * computing it itself; we use this to avoid redundant matrix inversions in 2494 * findMatchingPageForDragOver 2495 * 2496 */ 2497 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2498 if (cachedInverseMatrix == null) { 2499 v.getMatrix().invert(mTempInverseMatrix); 2500 cachedInverseMatrix = mTempInverseMatrix; 2501 } 2502 int scrollX = mScrollX; 2503 if (mNextPage != INVALID_PAGE) { 2504 scrollX = mScroller.getFinalX(); 2505 } 2506 xy[0] = xy[0] + scrollX - v.getLeft(); 2507 xy[1] = xy[1] + mScrollY - v.getTop(); 2508 cachedInverseMatrix.mapPoints(xy); 2509 } 2510 2511 /* 2512 * Maps a point from the Workspace's coordinate system to another sibling view's. (Workspace 2513 * covers the full screen) 2514 */ 2515 void mapPointFromSelfToSibling(View v, float[] xy) { 2516 xy[0] = xy[0] - v.getLeft(); 2517 xy[1] = xy[1] - v.getTop(); 2518 } 2519 2520 /* 2521 * 2522 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2523 * the parent View's coordinate space. The argument xy is modified with the return result. 2524 * 2525 */ 2526 void mapPointFromChildToSelf(View v, float[] xy) { 2527 v.getMatrix().mapPoints(xy); 2528 int scrollX = mScrollX; 2529 if (mNextPage != INVALID_PAGE) { 2530 scrollX = mScroller.getFinalX(); 2531 } 2532 xy[0] -= (scrollX - v.getLeft()); 2533 xy[1] -= (mScrollY - v.getTop()); 2534 } 2535 2536 static private float squaredDistance(float[] point1, float[] point2) { 2537 float distanceX = point1[0] - point2[0]; 2538 float distanceY = point2[1] - point2[1]; 2539 return distanceX * distanceX + distanceY * distanceY; 2540 } 2541 2542 /* 2543 * 2544 * Returns true if the passed CellLayout cl overlaps with dragView 2545 * 2546 */ 2547 boolean overlaps(CellLayout cl, DragView dragView, 2548 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2549 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2550 final float[] draggedItemTopLeft = mTempDragCoordinates; 2551 draggedItemTopLeft[0] = dragViewX; 2552 draggedItemTopLeft[1] = dragViewY; 2553 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2554 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2555 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2556 2557 // Transform the dragged item's top left coordinates 2558 // to the CellLayout's local coordinates 2559 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2560 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2561 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2562 2563 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2564 // Transform the dragged item's bottom right coordinates 2565 // to the CellLayout's local coordinates 2566 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2567 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2568 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2569 2570 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2571 float overlap = (overlapRegionRight - overlapRegionLeft) * 2572 (overlapRegionBottom - overlapRegionTop); 2573 if (overlap > 0) { 2574 return true; 2575 } 2576 } 2577 } 2578 return false; 2579 } 2580 2581 /* 2582 * 2583 * This method returns the CellLayout that is currently being dragged to. In order to drag 2584 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2585 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2586 * 2587 * Return null if no CellLayout is currently being dragged over 2588 * 2589 */ 2590 private CellLayout findMatchingPageForDragOver( 2591 DragView dragView, float originX, float originY, boolean exact) { 2592 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2593 // with the item being dragged and then choose the one that's closest to the touch point 2594 final int screenCount = getChildCount(); 2595 CellLayout bestMatchingScreen = null; 2596 float smallestDistSoFar = Float.MAX_VALUE; 2597 2598 for (int i = 0; i < screenCount; i++) { 2599 CellLayout cl = (CellLayout) getChildAt(i); 2600 2601 final float[] touchXy = {originX, originY}; 2602 // Transform the touch coordinates to the CellLayout's local coordinates 2603 // If the touch point is within the bounds of the cell layout, we can return immediately 2604 cl.getMatrix().invert(mTempInverseMatrix); 2605 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2606 2607 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2608 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2609 return cl; 2610 } 2611 2612 if (!exact) { 2613 // Get the center of the cell layout in screen coordinates 2614 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2615 cellLayoutCenter[0] = cl.getWidth()/2; 2616 cellLayoutCenter[1] = cl.getHeight()/2; 2617 mapPointFromChildToSelf(cl, cellLayoutCenter); 2618 2619 touchXy[0] = originX; 2620 touchXy[1] = originY; 2621 2622 // Calculate the distance between the center of the CellLayout 2623 // and the touch point 2624 float dist = squaredDistance(touchXy, cellLayoutCenter); 2625 2626 if (dist < smallestDistSoFar) { 2627 smallestDistSoFar = dist; 2628 bestMatchingScreen = cl; 2629 } 2630 } 2631 } 2632 return bestMatchingScreen; 2633 } 2634 2635 // This is used to compute the visual center of the dragView. This point is then 2636 // used to visualize drop locations and determine where to drop an item. The idea is that 2637 // the visual center represents the user's interpretation of where the item is, and hence 2638 // is the appropriate point to use when determining drop location. 2639 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2640 DragView dragView, float[] recycle) { 2641 float res[]; 2642 if (recycle == null) { 2643 res = new float[2]; 2644 } else { 2645 res = recycle; 2646 } 2647 2648 // First off, the drag view has been shifted in a way that is not represented in the 2649 // x and y values or the x/yOffsets. Here we account for that shift. 2650 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2651 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2652 2653 // These represent the visual top and left of drag view if a dragRect was provided. 2654 // If a dragRect was not provided, then they correspond to the actual view left and 2655 // top, as the dragRect is in that case taken to be the entire dragView. 2656 // R.dimen.dragViewOffsetY. 2657 int left = x - xOffset; 2658 int top = y - yOffset; 2659 2660 // In order to find the visual center, we shift by half the dragRect 2661 res[0] = left + dragView.getDragRegion().width() / 2; 2662 res[1] = top + dragView.getDragRegion().height() / 2; 2663 2664 return res; 2665 } 2666 2667 private boolean isDragWidget(DragObject d) { 2668 return (d.dragInfo instanceof LauncherAppWidgetInfo || 2669 d.dragInfo instanceof PendingAddWidgetInfo); 2670 } 2671 private boolean isExternalDragWidget(DragObject d) { 2672 return d.dragSource != this && isDragWidget(d); 2673 } 2674 2675 public void onDragOver(DragObject d) { 2676 // Skip drag over events while we are dragging over side pages 2677 if (mInScrollArea || mIsSwitchingState || mState == State.SMALL) return; 2678 2679 Rect r = new Rect(); 2680 CellLayout layout = null; 2681 ItemInfo item = (ItemInfo) d.dragInfo; 2682 2683 // Ensure that we have proper spans for the item that we are dropping 2684 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2685 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2686 d.dragView, mDragViewVisualCenter); 2687 2688 // Identify whether we have dragged over a side page 2689 if (isSmall()) { 2690 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 2691 mLauncher.getHotseat().getHitRect(r); 2692 if (r.contains(d.x, d.y)) { 2693 layout = mLauncher.getHotseat().getLayout(); 2694 } 2695 } 2696 if (layout == null) { 2697 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false); 2698 } 2699 if (layout != mDragTargetLayout) { 2700 // Cancel all intermediate folder states 2701 cleanupFolderCreation(d); 2702 2703 if (mDragTargetLayout != null) { 2704 mDragTargetLayout.setIsDragOverlapping(false); 2705 mDragTargetLayout.onDragExit(); 2706 } 2707 mDragTargetLayout = layout; 2708 if (mDragTargetLayout != null) { 2709 mDragTargetLayout.setIsDragOverlapping(true); 2710 mDragTargetLayout.onDragEnter(); 2711 } else { 2712 mLastDragOverView = null; 2713 } 2714 2715 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 2716 if (isInSpringLoadedMode) { 2717 if (mLauncher.isHotseatLayout(layout)) { 2718 mSpringLoadedDragController.cancel(); 2719 } else { 2720 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2721 } 2722 } 2723 } 2724 } else { 2725 // Test to see if we are over the hotseat otherwise just use the current page 2726 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 2727 mLauncher.getHotseat().getHitRect(r); 2728 if (r.contains(d.x, d.y)) { 2729 layout = mLauncher.getHotseat().getLayout(); 2730 } 2731 } 2732 if (layout == null) { 2733 layout = getCurrentDropLayout(); 2734 } 2735 if (layout != mDragTargetLayout) { 2736 if (mDragTargetLayout != null) { 2737 mDragTargetLayout.setIsDragOverlapping(false); 2738 mDragTargetLayout.onDragExit(); 2739 } 2740 mDragTargetLayout = layout; 2741 mDragTargetLayout.setIsDragOverlapping(true); 2742 mDragTargetLayout.onDragEnter(); 2743 } 2744 } 2745 2746 // Handle the drag over 2747 if (mDragTargetLayout != null) { 2748 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2749 2750 // We want the point to be mapped to the dragTarget. 2751 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2752 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2753 } else { 2754 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2755 } 2756 ItemInfo info = (ItemInfo) d.dragInfo; 2757 2758 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2759 (int) mDragViewVisualCenter[1], 1, 1, mDragTargetLayout, mTargetCell); 2760 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2761 mTargetCell[1]); 2762 2763 boolean userFolderPending = willCreateUserFolder(info, mDragTargetLayout, 2764 mTargetCell, false); 2765 boolean isOverFolder = dragOverView instanceof FolderIcon; 2766 if (dragOverView != mLastDragOverView) { 2767 cancelFolderCreation(); 2768 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2769 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2770 } 2771 } 2772 2773 if (userFolderPending && dragOverView != mLastDragOverView) { 2774 mFolderCreationAlarm.setOnAlarmListener(new 2775 FolderCreationAlarmListener(mDragTargetLayout, mTargetCell[0], mTargetCell[1])); 2776 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2777 } 2778 2779 if (dragOverView != mLastDragOverView && isOverFolder) { 2780 ((FolderIcon) dragOverView).onDragEnter(d.dragInfo); 2781 if (mDragTargetLayout != null) { 2782 mDragTargetLayout.clearDragOutlines(); 2783 } 2784 } 2785 mLastDragOverView = dragOverView; 2786 2787 if (!mCreateUserFolderOnDrop && !isOverFolder) { 2788 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2789 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2790 item.spanX, item.spanY, d.dragView.getDragVisualizeOffset(), 2791 d.dragView.getDragRegion()); 2792 } 2793 } 2794 } 2795 2796 private void cleanupFolderCreation(DragObject d) { 2797 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2798 mDragFolderRingAnimator.animateToNaturalState(); 2799 } 2800 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2801 if (d != null) { 2802 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2803 } 2804 } 2805 mFolderCreationAlarm.cancelAlarm(); 2806 } 2807 2808 private void cancelFolderCreation() { 2809 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2810 mDragFolderRingAnimator.animateToNaturalState(); 2811 } 2812 mCreateUserFolderOnDrop = false; 2813 mFolderCreationAlarm.cancelAlarm(); 2814 } 2815 2816 class FolderCreationAlarmListener implements OnAlarmListener { 2817 CellLayout layout; 2818 int cellX; 2819 int cellY; 2820 2821 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 2822 this.layout = layout; 2823 this.cellX = cellX; 2824 this.cellY = cellY; 2825 } 2826 2827 public void onAlarm(Alarm alarm) { 2828 if (mDragFolderRingAnimator == null) { 2829 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 2830 } 2831 mDragFolderRingAnimator.setCell(cellX, cellY); 2832 mDragFolderRingAnimator.setCellLayout(layout); 2833 mDragFolderRingAnimator.animateToAcceptState(); 2834 layout.showFolderAccept(mDragFolderRingAnimator); 2835 layout.clearDragOutlines(); 2836 mCreateUserFolderOnDrop = true; 2837 } 2838 } 2839 2840 @Override 2841 public void getHitRect(Rect outRect) { 2842 // We want the workspace to have the whole area of the display (it will find the correct 2843 // cell layout to drop to in the existing drag/drop logic. 2844 outRect.set(0, 0, mDisplayWidth, mDisplayHeight); 2845 } 2846 2847 /** 2848 * Add the item specified by dragInfo to the given layout. 2849 * @return true if successful 2850 */ 2851 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2852 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2853 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2854 return true; 2855 } 2856 mLauncher.showOutOfSpaceMessage(); 2857 return false; 2858 } 2859 2860 private void onDropExternal(int[] touchXY, Object dragInfo, 2861 CellLayout cellLayout, boolean insertAtFirst) { 2862 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 2863 } 2864 2865 /** 2866 * Drop an item that didn't originate on one of the workspace screens. 2867 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2868 * come from another app altogether. 2869 * 2870 * NOTE: This can also be called when we are outside of a drag event, when we want 2871 * to add an item to one of the workspace screens. 2872 */ 2873 private void onDropExternal(final int[] touchXY, final Object dragInfo, 2874 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 2875 final Runnable exitSpringLoadedRunnable = new Runnable() { 2876 @Override 2877 public void run() { 2878 mLauncher.exitSpringLoadedDragModeDelayed(true, false, null); 2879 } 2880 }; 2881 2882 ItemInfo info = (ItemInfo) dragInfo; 2883 int spanX = info.spanX; 2884 int spanY = info.spanY; 2885 if (mDragInfo != null) { 2886 spanX = mDragInfo.spanX; 2887 spanY = mDragInfo.spanY; 2888 } 2889 2890 final long container = mLauncher.isHotseatLayout(cellLayout) ? 2891 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2892 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2893 final int screen = indexOfChild(cellLayout); 2894 if (!mLauncher.isHotseatLayout(cellLayout) && screen != mCurrentPage 2895 && mState != State.SPRING_LOADED) { 2896 snapToPage(screen); 2897 } 2898 2899 if (info instanceof PendingAddItemInfo) { 2900 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 2901 2902 boolean findNearestVacantCell = true; 2903 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 2904 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 2905 cellLayout, mTargetCell); 2906 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, 2907 true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 2908 mDragTargetLayout, mTargetCell)) { 2909 findNearestVacantCell = false; 2910 } 2911 } 2912 if (findNearestVacantCell) { 2913 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], spanX, spanY, null, 2914 cellLayout, mTargetCell); 2915 } 2916 2917 Runnable onAnimationCompleteRunnable = new Runnable() { 2918 @Override 2919 public void run() { 2920 // When dragging and dropping from customization tray, we deal with creating 2921 // widgets/shortcuts/folders in a slightly different way 2922 switch (pendingInfo.itemType) { 2923 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 2924 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, 2925 container, screen, mTargetCell, null); 2926 break; 2927 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2928 mLauncher.processShortcutFromDrop(pendingInfo.componentName, 2929 container, screen, mTargetCell, null); 2930 break; 2931 default: 2932 throw new IllegalStateException("Unknown item type: " + 2933 pendingInfo.itemType); 2934 } 2935 cellLayout.onDragExit(); 2936 } 2937 }; 2938 2939 animateExternalDrop((PendingAddItemInfo) info, cellLayout, d.dragView, 2940 onAnimationCompleteRunnable, ANIMATE_INTO_POSITION); 2941 } else { 2942 // This is for other drag/drop cases, like dragging from All Apps 2943 View view = null; 2944 2945 switch (info.itemType) { 2946 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 2947 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2948 if (info.container == NO_ID && info instanceof ApplicationInfo) { 2949 // Came from all apps -- make a copy 2950 info = new ShortcutInfo((ApplicationInfo) info); 2951 } 2952 view = mLauncher.createShortcut(R.layout.application, cellLayout, 2953 (ShortcutInfo) info); 2954 break; 2955 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 2956 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 2957 (FolderInfo) info, mIconCache); 2958 break; 2959 default: 2960 throw new IllegalStateException("Unknown item type: " + info.itemType); 2961 } 2962 2963 // First we find the cell nearest to point at which the item is 2964 // dropped, without any consideration to whether there is an item there. 2965 if (touchXY != null) { 2966 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 2967 cellLayout, mTargetCell); 2968 d.postAnimationRunnable = exitSpringLoadedRunnable; 2969 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, true, 2970 d.dragView, d.postAnimationRunnable)) { 2971 return; 2972 } 2973 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, d, true)) { 2974 return; 2975 } 2976 } 2977 2978 if (touchXY != null) { 2979 // when dragging and dropping, just find the closest free spot 2980 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], 1, 1, null, 2981 cellLayout, mTargetCell); 2982 } else { 2983 cellLayout.findCellForSpan(mTargetCell, 1, 1); 2984 } 2985 addInScreen(view, container, screen, mTargetCell[0], mTargetCell[1], info.spanX, 2986 info.spanY, insertAtFirst); 2987 cellLayout.onDropChild(view); 2988 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2989 cellLayout.getChildrenLayout().measureChild(view); 2990 2991 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, 2992 lp.cellX, lp.cellY); 2993 2994 if (d.dragView != null) { 2995 // We wrap the animation call in the temporary set and reset of the current 2996 // cellLayout to its final transform -- this means we animate the drag view to 2997 // the correct final location. 2998 setFinalTransitionTransform(cellLayout); 2999 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 3000 exitSpringLoadedRunnable); 3001 resetTransitionTransform(cellLayout); 3002 } 3003 } 3004 } 3005 3006 public Bitmap createWidgetBitmap(PendingAddWidgetInfo widgetInfo) { 3007 int[] unScaledSize = mLauncher.getWorkspace().estimateItemSize(widgetInfo.spanX, 3008 widgetInfo.spanY, widgetInfo, false); 3009 View layout = widgetInfo.boundWidget; 3010 mLauncher.getDragLayer().removeView(layout); 3011 layout.setVisibility(VISIBLE); 3012 3013 int width = MeasureSpec.makeMeasureSpec(unScaledSize[0], MeasureSpec.EXACTLY); 3014 int height = MeasureSpec.makeMeasureSpec(unScaledSize[1], MeasureSpec.EXACTLY); 3015 Bitmap b = Bitmap.createBitmap(unScaledSize[0], unScaledSize[1], 3016 Bitmap.Config.ARGB_8888); 3017 Canvas c = new Canvas(b); 3018 3019 layout.measure(width, height); 3020 layout.layout(0, 0, unScaledSize[0], unScaledSize[1]); 3021 layout.draw(c); 3022 c.setBitmap(null); 3023 return b; 3024 } 3025 3026 public void animateExternalDrop(PendingAddItemInfo pendingInfo, CellLayout cellLayout, 3027 DragView dragView, Runnable onCompleteRunnable, int animationType) { 3028 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 3029 // location and size on the home screen. 3030 int spanX = pendingInfo.spanX; 3031 int spanY = pendingInfo.spanY; 3032 RectF r = estimateItemPosition(cellLayout, pendingInfo, 3033 mTargetCell[0], mTargetCell[1], spanX, spanY); 3034 int loc[] = new int[2]; 3035 loc[0] = (int) r.left; 3036 loc[1] = (int) r.top; 3037 setFinalTransitionTransform(cellLayout); 3038 float cellLayoutScale = 3039 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(cellLayout, loc); 3040 resetTransitionTransform(cellLayout); 3041 3042 float dragViewScaleX = r.width() / dragView.getMeasuredWidth(); 3043 float dragViewScaleY = r.height() / dragView.getMeasuredHeight(); 3044 // The animation will scale the dragView about its center, so we need to center about 3045 // the final location. 3046 loc[0] -= (dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 3047 loc[1] -= (dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 3048 3049 float scaleX = dragViewScaleX * cellLayoutScale; 3050 float scaleY = dragViewScaleY * cellLayoutScale; 3051 3052 Resources res = mLauncher.getResources(); 3053 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration) - 200; 3054 3055 int animationEnd = DragLayer.ANIMATION_END_REMAIN_VISIBLE; 3056 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && 3057 (((PendingAddWidgetInfo) pendingInfo).info.configure == null || 3058 animationType == COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION)) { 3059 Bitmap crossFadeBitmap = createWidgetBitmap((PendingAddWidgetInfo) pendingInfo); 3060 dragView.setCrossFadeBitmap(crossFadeBitmap); 3061 dragView.crossFade((int) (duration * 0.8f)); 3062 animationEnd = DragLayer.ANIMATION_END_DISAPPEAR; 3063 } else { 3064 scaleX = scaleY = Math.min(scaleX, scaleY); 3065 } 3066 3067 if (animationType == CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION) { 3068 mLauncher.getDragLayer().animateViewIntoPosition(dragView, loc, 0f, 0.1f, 0.1f, 3069 DragLayer.ANIMATION_END_DISAPPEAR, onCompleteRunnable, duration); 3070 } else { 3071 mLauncher.getDragLayer().animateViewIntoPosition(dragView, loc, 1f, scaleX, scaleY, 3072 animationEnd, onCompleteRunnable, duration); 3073 } 3074 } 3075 3076 public void setFinalTransitionTransform(CellLayout layout) { 3077 if (isSwitchingState()) { 3078 int index = indexOfChild(layout); 3079 mCurrentScaleX = layout.getScaleX(); 3080 mCurrentScaleY = layout.getScaleY(); 3081 mCurrentTranslationX = layout.getTranslationX(); 3082 mCurrentTranslationY = layout.getTranslationY(); 3083 mCurrentRotationY = layout.getRotationY(); 3084 layout.setScaleX(mNewScaleXs[index]); 3085 layout.setScaleY(mNewScaleYs[index]); 3086 layout.setTranslationX(mNewTranslationXs[index]); 3087 layout.setTranslationY(mNewTranslationYs[index]); 3088 layout.setRotationY(mNewRotationYs[index]); 3089 } 3090 } 3091 public void resetTransitionTransform(CellLayout layout) { 3092 if (isSwitchingState()) { 3093 mCurrentScaleX = layout.getScaleX(); 3094 mCurrentScaleY = layout.getScaleY(); 3095 mCurrentTranslationX = layout.getTranslationX(); 3096 mCurrentTranslationY = layout.getTranslationY(); 3097 mCurrentRotationY = layout.getRotationY(); 3098 layout.setScaleX(mCurrentScaleX); 3099 layout.setScaleY(mCurrentScaleY); 3100 layout.setTranslationX(mCurrentTranslationX); 3101 layout.setTranslationY(mCurrentTranslationY); 3102 layout.setRotationY(mCurrentRotationY); 3103 } 3104 } 3105 3106 /** 3107 * Return the current {@link CellLayout}, correctly picking the destination 3108 * screen while a scroll is in progress. 3109 */ 3110 public CellLayout getCurrentDropLayout() { 3111 return (CellLayout) getChildAt(mNextPage == INVALID_PAGE ? mCurrentPage : mNextPage); 3112 } 3113 3114 /** 3115 * Return the current CellInfo describing our current drag; this method exists 3116 * so that Launcher can sync this object with the correct info when the activity is created/ 3117 * destroyed 3118 * 3119 */ 3120 public CellLayout.CellInfo getDragInfo() { 3121 return mDragInfo; 3122 } 3123 3124 /** 3125 * Calculate the nearest cell where the given object would be dropped. 3126 * 3127 * pixelX and pixelY should be in the coordinate system of layout 3128 */ 3129 private int[] findNearestVacantArea(int pixelX, int pixelY, 3130 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 3131 return layout.findNearestVacantArea( 3132 pixelX, pixelY, spanX, spanY, ignoreView, recycle); 3133 } 3134 3135 /** 3136 * Calculate the nearest cell where the given object would be dropped. 3137 * 3138 * pixelX and pixelY should be in the coordinate system of layout 3139 */ 3140 private int[] findNearestArea(int pixelX, int pixelY, 3141 int spanX, int spanY, CellLayout layout, int[] recycle) { 3142 return layout.findNearestArea( 3143 pixelX, pixelY, spanX, spanY, recycle); 3144 } 3145 3146 void setup(DragController dragController) { 3147 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3148 mDragController = dragController; 3149 3150 // hardware layers on children are enabled on startup, but should be disabled until 3151 // needed 3152 updateChildrenLayersEnabled(); 3153 setWallpaperDimension(); 3154 } 3155 3156 /** 3157 * Called at the end of a drag which originated on the workspace. 3158 */ 3159 public void onDropCompleted(View target, DragObject d, boolean success) { 3160 if (success) { 3161 if (target != this) { 3162 if (mDragInfo != null) { 3163 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 3164 if (mDragInfo.cell instanceof DropTarget) { 3165 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 3166 } 3167 } 3168 } 3169 } else if (mDragInfo != null) { 3170 // NOTE: When 'success' is true, onDragExit is called by the DragController before 3171 // calling onDropCompleted(). We call it ourselves here, but maybe this should be 3172 // moved into DragController.cancelDrag(). 3173 doDragExit(null); 3174 CellLayout cellLayout; 3175 if (mLauncher.isHotseatLayout(target)) { 3176 cellLayout = mLauncher.getHotseat().getLayout(); 3177 } else { 3178 cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3179 } 3180 cellLayout.onDropChild(mDragInfo.cell); 3181 } 3182 if (d.cancelled && mDragInfo.cell != null) { 3183 mDragInfo.cell.setVisibility(VISIBLE); 3184 } 3185 mDragOutline = null; 3186 mDragInfo = null; 3187 3188 // Hide the scrolling indicator after you pick up an item 3189 hideScrollingIndicator(false); 3190 } 3191 3192 public boolean isDropEnabled() { 3193 return true; 3194 } 3195 3196 @Override 3197 protected void onRestoreInstanceState(Parcelable state) { 3198 super.onRestoreInstanceState(state); 3199 Launcher.setScreen(mCurrentPage); 3200 } 3201 3202 @Override 3203 public void scrollLeft() { 3204 if (!isSmall() && !mIsSwitchingState) { 3205 super.scrollLeft(); 3206 } 3207 Folder openFolder = getOpenFolder(); 3208 if (openFolder != null) { 3209 openFolder.completeDragExit(); 3210 } 3211 } 3212 3213 @Override 3214 public void scrollRight() { 3215 if (!isSmall() && !mIsSwitchingState) { 3216 super.scrollRight(); 3217 } 3218 Folder openFolder = getOpenFolder(); 3219 if (openFolder != null) { 3220 openFolder.completeDragExit(); 3221 } 3222 } 3223 3224 @Override 3225 public boolean onEnterScrollArea(int x, int y, int direction) { 3226 // Ignore the scroll area if we are dragging over the hot seat 3227 if (mLauncher.getHotseat() != null) { 3228 Rect r = new Rect(); 3229 mLauncher.getHotseat().getHitRect(r); 3230 if (r.contains(x, y)) { 3231 return false; 3232 } 3233 } 3234 3235 boolean result = false; 3236 if (!isSmall() && !mIsSwitchingState) { 3237 mInScrollArea = true; 3238 3239 final int page = (mNextPage != INVALID_PAGE ? mNextPage : mCurrentPage) + 3240 (direction == DragController.SCROLL_LEFT ? -1 : 1); 3241 cancelFolderCreation(); 3242 3243 if (0 <= page && page < getChildCount()) { 3244 CellLayout layout = (CellLayout) getChildAt(page); 3245 // Exit the current layout and mark the overlapping layout 3246 if (mDragTargetLayout != null) { 3247 mDragTargetLayout.setIsDragOverlapping(false); 3248 mDragTargetLayout.onDragExit(); 3249 } 3250 mDragTargetLayout = layout; 3251 mDragTargetLayout.setIsDragOverlapping(true); 3252 3253 // Workspace is responsible for drawing the edge glow on adjacent pages, 3254 // so we need to redraw the workspace when this may have changed. 3255 invalidate(); 3256 result = true; 3257 } 3258 } 3259 return result; 3260 } 3261 3262 @Override 3263 public boolean onExitScrollArea() { 3264 boolean result = false; 3265 if (mInScrollArea) { 3266 if (mDragTargetLayout != null) { 3267 mDragTargetLayout.setIsDragOverlapping(false); 3268 // Workspace is responsible for drawing the edge glow on adjacent pages, 3269 // so we need to redraw the workspace when this may have changed. 3270 invalidate(); 3271 } 3272 if (mDragTargetLayout != null && mDragHasEnteredWorkspace) { 3273 // Unmark the overlapping layout and re-enter the current layout 3274 mDragTargetLayout = getCurrentDropLayout(); 3275 mDragTargetLayout.onDragEnter(); 3276 } 3277 result = true; 3278 mInScrollArea = false; 3279 } 3280 return result; 3281 } 3282 3283 private void onResetScrollArea() { 3284 if (mDragTargetLayout != null) { 3285 // Unmark the overlapping layout 3286 mDragTargetLayout.setIsDragOverlapping(false); 3287 3288 // Workspace is responsible for drawing the edge glow on adjacent pages, 3289 // so we need to redraw the workspace when this may have changed. 3290 invalidate(); 3291 } 3292 mInScrollArea = false; 3293 } 3294 3295 /** 3296 * Returns a specific CellLayout 3297 */ 3298 CellLayout getParentCellLayoutForView(View v) { 3299 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3300 for (CellLayout layout : layouts) { 3301 if (layout.getChildrenLayout().indexOfChild(v) > -1) { 3302 return layout; 3303 } 3304 } 3305 return null; 3306 } 3307 3308 /** 3309 * Returns a list of all the CellLayouts in the workspace. 3310 */ 3311 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3312 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3313 int screenCount = getChildCount(); 3314 for (int screen = 0; screen < screenCount; screen++) { 3315 layouts.add(((CellLayout) getChildAt(screen))); 3316 } 3317 if (mLauncher.getHotseat() != null) { 3318 layouts.add(mLauncher.getHotseat().getLayout()); 3319 } 3320 return layouts; 3321 } 3322 3323 /** 3324 * We should only use this to search for specific children. Do not use this method to modify 3325 * CellLayoutChildren directly. 3326 */ 3327 ArrayList<CellLayoutChildren> getWorkspaceAndHotseatCellLayoutChildren() { 3328 ArrayList<CellLayoutChildren> childrenLayouts = new ArrayList<CellLayoutChildren>(); 3329 int screenCount = getChildCount(); 3330 for (int screen = 0; screen < screenCount; screen++) { 3331 childrenLayouts.add(((CellLayout) getChildAt(screen)).getChildrenLayout()); 3332 } 3333 if (mLauncher.getHotseat() != null) { 3334 childrenLayouts.add(mLauncher.getHotseat().getLayout().getChildrenLayout()); 3335 } 3336 return childrenLayouts; 3337 } 3338 3339 public Folder getFolderForTag(Object tag) { 3340 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3341 for (CellLayoutChildren layout: childrenLayouts) { 3342 int count = layout.getChildCount(); 3343 for (int i = 0; i < count; i++) { 3344 View child = layout.getChildAt(i); 3345 if (child instanceof Folder) { 3346 Folder f = (Folder) child; 3347 if (f.getInfo() == tag && f.getInfo().opened) { 3348 return f; 3349 } 3350 } 3351 } 3352 } 3353 return null; 3354 } 3355 3356 public View getViewForTag(Object tag) { 3357 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3358 for (CellLayoutChildren layout: childrenLayouts) { 3359 int count = layout.getChildCount(); 3360 for (int i = 0; i < count; i++) { 3361 View child = layout.getChildAt(i); 3362 if (child.getTag() == tag) { 3363 return child; 3364 } 3365 } 3366 } 3367 return null; 3368 } 3369 3370 void clearDropTargets() { 3371 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3372 for (CellLayoutChildren layout: childrenLayouts) { 3373 int childCount = layout.getChildCount(); 3374 for (int j = 0; j < childCount; j++) { 3375 View v = layout.getChildAt(j); 3376 if (v instanceof DropTarget) { 3377 mDragController.removeDropTarget((DropTarget) v); 3378 } 3379 } 3380 } 3381 } 3382 3383 void removeItems(final ArrayList<ApplicationInfo> apps) { 3384 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3385 3386 final HashSet<String> packageNames = new HashSet<String>(); 3387 final int appCount = apps.size(); 3388 for (int i = 0; i < appCount; i++) { 3389 packageNames.add(apps.get(i).componentName.getPackageName()); 3390 } 3391 3392 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3393 for (final CellLayout layoutParent: cellLayouts) { 3394 final ViewGroup layout = layoutParent.getChildrenLayout(); 3395 3396 // Avoid ANRs by treating each screen separately 3397 post(new Runnable() { 3398 public void run() { 3399 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3400 childrenToRemove.clear(); 3401 3402 int childCount = layout.getChildCount(); 3403 for (int j = 0; j < childCount; j++) { 3404 final View view = layout.getChildAt(j); 3405 Object tag = view.getTag(); 3406 3407 if (tag instanceof ShortcutInfo) { 3408 final ShortcutInfo info = (ShortcutInfo) tag; 3409 final Intent intent = info.intent; 3410 final ComponentName name = intent.getComponent(); 3411 3412 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3413 for (String packageName: packageNames) { 3414 if (packageName.equals(name.getPackageName())) { 3415 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3416 childrenToRemove.add(view); 3417 } 3418 } 3419 } 3420 } else if (tag instanceof FolderInfo) { 3421 final FolderInfo info = (FolderInfo) tag; 3422 final ArrayList<ShortcutInfo> contents = info.contents; 3423 final int contentsCount = contents.size(); 3424 final ArrayList<ShortcutInfo> appsToRemoveFromFolder = 3425 new ArrayList<ShortcutInfo>(); 3426 3427 for (int k = 0; k < contentsCount; k++) { 3428 final ShortcutInfo appInfo = contents.get(k); 3429 final Intent intent = appInfo.intent; 3430 final ComponentName name = intent.getComponent(); 3431 3432 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3433 for (String packageName: packageNames) { 3434 if (packageName.equals(name.getPackageName())) { 3435 appsToRemoveFromFolder.add(appInfo); 3436 } 3437 } 3438 } 3439 } 3440 for (ShortcutInfo item: appsToRemoveFromFolder) { 3441 info.remove(item); 3442 LauncherModel.deleteItemFromDatabase(mLauncher, item); 3443 } 3444 } else if (tag instanceof LauncherAppWidgetInfo) { 3445 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3446 final AppWidgetProviderInfo provider = 3447 widgets.getAppWidgetInfo(info.appWidgetId); 3448 if (provider != null) { 3449 for (String packageName: packageNames) { 3450 if (packageName.equals(provider.provider.getPackageName())) { 3451 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3452 childrenToRemove.add(view); 3453 } 3454 } 3455 } 3456 } 3457 } 3458 3459 childCount = childrenToRemove.size(); 3460 for (int j = 0; j < childCount; j++) { 3461 View child = childrenToRemove.get(j); 3462 // Note: We can not remove the view directly from CellLayoutChildren as this 3463 // does not re-mark the spaces as unoccupied. 3464 layoutParent.removeViewInLayout(child); 3465 if (child instanceof DropTarget) { 3466 mDragController.removeDropTarget((DropTarget)child); 3467 } 3468 } 3469 3470 if (childCount > 0) { 3471 layout.requestLayout(); 3472 layout.invalidate(); 3473 } 3474 } 3475 }); 3476 } 3477 } 3478 3479 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3480 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3481 for (CellLayoutChildren layout: childrenLayouts) { 3482 int childCount = layout.getChildCount(); 3483 for (int j = 0; j < childCount; j++) { 3484 final View view = layout.getChildAt(j); 3485 Object tag = view.getTag(); 3486 if (tag instanceof ShortcutInfo) { 3487 ShortcutInfo info = (ShortcutInfo)tag; 3488 // We need to check for ACTION_MAIN otherwise getComponent() might 3489 // return null for some shortcuts (for instance, for shortcuts to 3490 // web pages.) 3491 final Intent intent = info.intent; 3492 final ComponentName name = intent.getComponent(); 3493 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3494 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3495 final int appCount = apps.size(); 3496 for (int k = 0; k < appCount; k++) { 3497 ApplicationInfo app = apps.get(k); 3498 if (app.componentName.equals(name)) { 3499 info.setIcon(mIconCache.getIcon(info.intent)); 3500 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 3501 new FastBitmapDrawable(info.getIcon(mIconCache)), 3502 null, null); 3503 } 3504 } 3505 } 3506 } 3507 } 3508 } 3509 } 3510 3511 void moveToDefaultScreen(boolean animate) { 3512 if (!isSmall()) { 3513 if (animate) { 3514 snapToPage(mDefaultPage); 3515 } else { 3516 setCurrentPage(mDefaultPage); 3517 } 3518 } 3519 getChildAt(mDefaultPage).requestFocus(); 3520 } 3521 3522 @Override 3523 public void syncPages() { 3524 } 3525 3526 @Override 3527 public void syncPageItems(int page, boolean immediate) { 3528 } 3529 3530 @Override 3531 protected String getCurrentPageDescription() { 3532 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 3533 return String.format(mContext.getString(R.string.workspace_scroll_format), 3534 page + 1, getChildCount()); 3535 } 3536 3537 public void getLocationInDragLayer(int[] loc) { 3538 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 3539 } 3540 3541 void setFadeForOverScroll(float fade) { 3542 if (!isScrollingIndicatorEnabled()) return; 3543 3544 mOverscrollFade = fade; 3545 float reducedFade = 0.5f + 0.5f * (1 - fade); 3546 final ViewGroup parent = (ViewGroup) getParent(); 3547 final ImageView qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3548 final ImageView dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3549 final View scrollIndicator = getScrollingIndicator(); 3550 3551 cancelScrollingIndicatorAnimations(); 3552 if (qsbDivider != null) qsbDivider.setAlpha(reducedFade); 3553 if (dockDivider != null) dockDivider.setAlpha(reducedFade); 3554 scrollIndicator.setAlpha(1 - fade); 3555 } 3556} 3557