Workspace.java revision d7654c416c215dd6a9c8b733a16b0a35f1f22c13
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.launcher2; 18 19import android.animation.Animator; 20import android.animation.Animator.AnimatorListener; 21import android.animation.AnimatorListenerAdapter; 22import android.animation.AnimatorSet; 23import android.animation.ObjectAnimator; 24import android.animation.TimeInterpolator; 25import android.animation.ValueAnimator; 26import android.animation.ValueAnimator.AnimatorUpdateListener; 27import android.app.AlertDialog; 28import android.app.WallpaperManager; 29import android.appwidget.AppWidgetHostView; 30import android.appwidget.AppWidgetManager; 31import android.appwidget.AppWidgetProviderInfo; 32import android.content.ClipData; 33import android.content.ClipDescription; 34import android.content.ComponentName; 35import android.content.Context; 36import android.content.Intent; 37import android.content.res.Resources; 38import android.content.res.TypedArray; 39import android.graphics.Bitmap; 40import android.graphics.Camera; 41import android.graphics.Canvas; 42import android.graphics.Matrix; 43import android.graphics.Paint; 44import android.graphics.Point; 45import android.graphics.PorterDuff; 46import android.graphics.Rect; 47import android.graphics.RectF; 48import android.graphics.Region.Op; 49import android.graphics.drawable.Drawable; 50import android.os.IBinder; 51import android.os.Parcelable; 52import android.util.AttributeSet; 53import android.util.DisplayMetrics; 54import android.util.Log; 55import android.util.Pair; 56import android.view.Display; 57import android.view.DragEvent; 58import android.view.MotionEvent; 59import android.view.View; 60import android.view.ViewGroup; 61import android.view.animation.DecelerateInterpolator; 62import android.widget.ImageView; 63import android.widget.TextView; 64import android.widget.Toast; 65 66import com.android.launcher.R; 67import com.android.launcher2.FolderIcon.FolderRingAnimator; 68import com.android.launcher2.InstallWidgetReceiver.WidgetMimeTypeHandlerData; 69 70import java.util.ArrayList; 71import java.util.HashSet; 72import java.util.List; 73 74/** 75 * The workspace is a wide area with a wallpaper and a finite number of pages. 76 * Each page contains a number of icons, folders or widgets the user can 77 * interact with. A workspace is meant to be used with a fixed width only. 78 */ 79public class Workspace extends SmoothPagedView 80 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 81 DragController.DragListener, LauncherTransitionable { 82 @SuppressWarnings({"UnusedDeclaration"}) 83 private static final String TAG = "Launcher.Workspace"; 84 85 // Y rotation to apply to the workspace screens 86 private static final float WORKSPACE_ROTATION = 12.5f; 87 private static final float WORKSPACE_OVERSCROLL_ROTATION = 24f; 88 private static float CAMERA_DISTANCE = 6500; 89 90 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 91 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 92 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 93 94 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 95 private static final int ADJACENT_SCREEN_DROP_DURATION = 300; 96 private static final int FLING_THRESHOLD_VELOCITY = 500; 97 98 // These animators are used to fade the children's outlines 99 private ObjectAnimator mChildrenOutlineFadeInAnimation; 100 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 101 private float mChildrenOutlineAlpha = 0; 102 103 // These properties refer to the background protection gradient used for AllApps and Customize 104 private ValueAnimator mBackgroundFadeInAnimation; 105 private ValueAnimator mBackgroundFadeOutAnimation; 106 private Drawable mBackground; 107 boolean mDrawBackground = true; 108 private float mBackgroundAlpha = 0; 109 private float mOverScrollMaxBackgroundAlpha = 0.0f; 110 private int mOverScrollPageIndex = -1; 111 112 private float mWallpaperScrollRatio = 1.0f; 113 114 private final WallpaperManager mWallpaperManager; 115 private IBinder mWindowToken; 116 private static final float WALLPAPER_SCREENS_SPAN = 2f; 117 118 private int mDefaultPage; 119 120 /** 121 * CellInfo for the cell that is currently being dragged 122 */ 123 private CellLayout.CellInfo mDragInfo; 124 125 /** 126 * Target drop area calculated during last acceptDrop call. 127 */ 128 private int[] mTargetCell = new int[2]; 129 130 /** 131 * The CellLayout that is currently being dragged over 132 */ 133 private CellLayout mDragTargetLayout = null; 134 private boolean mDragHasEnteredWorkspace = false; 135 136 private Launcher mLauncher; 137 private IconCache mIconCache; 138 private DragController mDragController; 139 140 // These are temporary variables to prevent having to allocate a new object just to 141 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 142 private int[] mTempCell = new int[2]; 143 private int[] mTempEstimate = new int[2]; 144 private float[] mDragViewVisualCenter = new float[2]; 145 private float[] mTempDragCoordinates = new float[2]; 146 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 147 private float[] mTempDragBottomRightCoordinates = new float[2]; 148 private Matrix mTempInverseMatrix = new Matrix(); 149 150 private SpringLoadedDragController mSpringLoadedDragController; 151 private float mSpringLoadedShrinkFactor; 152 153 private static final int DEFAULT_CELL_COUNT_X = 4; 154 private static final int DEFAULT_CELL_COUNT_Y = 4; 155 156 // State variable that indicates whether the pages are small (ie when you're 157 // in all apps or customize mode) 158 159 enum State { NORMAL, SPRING_LOADED, SMALL }; 160 private State mState = State.NORMAL; 161 private boolean mIsSwitchingState = false; 162 163 boolean mAnimatingViewIntoPlace = false; 164 boolean mIsDragOccuring = false; 165 boolean mChildrenLayersEnabled = true; 166 167 /** Is the user is dragging an item near the edge of a page? */ 168 private boolean mInScrollArea = false; 169 170 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 171 private Bitmap mDragOutline = null; 172 private final Rect mTempRect = new Rect(); 173 private final int[] mTempXY = new int[2]; 174 private int mDragViewMultiplyColor; 175 private float mOverscrollFade = 0; 176 177 // Paint used to draw external drop outline 178 private final Paint mExternalDragOutlinePaint = new Paint(); 179 180 // Camera and Matrix used to determine the final position of a neighboring CellLayout 181 private final Matrix mMatrix = new Matrix(); 182 private final Camera mCamera = new Camera(); 183 private final float mTempFloat2[] = new float[2]; 184 185 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 186 int mWallpaperWidth; 187 int mWallpaperHeight; 188 WallpaperOffsetInterpolator mWallpaperOffset; 189 boolean mUpdateWallpaperOffsetImmediately = false; 190 private Runnable mDelayedResizeRunnable; 191 private int mDisplayWidth; 192 private int mDisplayHeight; 193 private int mWallpaperTravelWidth; 194 195 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 196 private static final int FOLDER_CREATION_TIMEOUT = 250; 197 private final Alarm mFolderCreationAlarm = new Alarm(); 198 private FolderRingAnimator mDragFolderRingAnimator = null; 199 private View mLastDragOverView = null; 200 private boolean mCreateUserFolderOnDrop = false; 201 202 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 203 private float mXDown; 204 private float mYDown; 205 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 206 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 207 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 208 209 // These variables are used for storing the initial and final values during workspace animations 210 private int mSavedScrollX; 211 private float mSavedRotationY; 212 private float mSavedTranslationX; 213 private float mCurrentScaleX; 214 private float mCurrentScaleY; 215 private float mCurrentRotationY; 216 private float mCurrentTranslationX; 217 private float mCurrentTranslationY; 218 private float[] mOldTranslationXs; 219 private float[] mOldTranslationYs; 220 private float[] mOldScaleXs; 221 private float[] mOldScaleYs; 222 private float[] mOldBackgroundAlphas; 223 private float[] mOldBackgroundAlphaMultipliers; 224 private float[] mOldAlphas; 225 private float[] mOldRotationYs; 226 private float[] mNewTranslationXs; 227 private float[] mNewTranslationYs; 228 private float[] mNewScaleXs; 229 private float[] mNewScaleYs; 230 private float[] mNewBackgroundAlphas; 231 private float[] mNewBackgroundAlphaMultipliers; 232 private float[] mNewAlphas; 233 private float[] mNewRotationYs; 234 private float mTransitionProgress = 1f; 235 236 /** 237 * Used to inflate the Workspace from XML. 238 * 239 * @param context The application's context. 240 * @param attrs The attributes set containing the Workspace's customization values. 241 */ 242 public Workspace(Context context, AttributeSet attrs) { 243 this(context, attrs, 0); 244 } 245 246 /** 247 * Used to inflate the Workspace from XML. 248 * 249 * @param context The application's context. 250 * @param attrs The attributes set containing the Workspace's customization values. 251 * @param defStyle Unused. 252 */ 253 public Workspace(Context context, AttributeSet attrs, int defStyle) { 254 super(context, attrs, defStyle); 255 mContentIsRefreshable = false; 256 257 // With workspace, data is available straight from the get-go 258 setDataIsReady(); 259 260 mFadeInAdjacentScreens = 261 getResources().getBoolean(R.bool.config_workspaceFadeAdjacentScreens); 262 mWallpaperManager = WallpaperManager.getInstance(context); 263 264 int cellCountX = DEFAULT_CELL_COUNT_X; 265 int cellCountY = DEFAULT_CELL_COUNT_Y; 266 267 TypedArray a = context.obtainStyledAttributes(attrs, 268 R.styleable.Workspace, defStyle, 0); 269 270 final Resources res = context.getResources(); 271 if (LauncherApplication.isScreenLarge()) { 272 // Determine number of rows/columns dynamically 273 // TODO: This code currently fails on tablets with an aspect ratio < 1.3. 274 // Around that ratio we should make cells the same size in portrait and 275 // landscape 276 TypedArray actionBarSizeTypedArray = 277 context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize }); 278 final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); 279 final float systemBarHeight = res.getDimension(R.dimen.status_bar_height); 280 final float smallestScreenDim = res.getConfiguration().smallestScreenWidthDp; 281 282 cellCountX = 1; 283 while (CellLayout.widthInPortrait(res, cellCountX + 1) <= smallestScreenDim) { 284 cellCountX++; 285 } 286 287 cellCountY = 1; 288 while (actionBarHeight + CellLayout.heightInLandscape(res, cellCountY + 1) 289 <= smallestScreenDim - systemBarHeight) { 290 cellCountY++; 291 } 292 } 293 294 mSpringLoadedShrinkFactor = 295 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 296 mDragViewMultiplyColor = res.getColor(R.color.drag_view_multiply_color); 297 298 // if the value is manually specified, use that instead 299 cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX); 300 cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY); 301 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 302 a.recycle(); 303 304 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 305 setHapticFeedbackEnabled(false); 306 307 mLauncher = (Launcher) context; 308 initWorkspace(); 309 310 // Disable multitouch across the workspace/all apps/customize tray 311 setMotionEventSplittingEnabled(true); 312 } 313 314 // estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each 315 // dimension if unsuccessful 316 public int[] estimateItemSize(int hSpan, int vSpan, 317 PendingAddItemInfo pendingItemInfo, boolean springLoaded) { 318 int[] size = new int[2]; 319 if (getChildCount() > 0) { 320 CellLayout cl = (CellLayout) mLauncher.getWorkspace().getChildAt(0); 321 RectF r = estimateItemPosition(cl, pendingItemInfo, 0, 0, hSpan, vSpan); 322 size[0] = (int) r.width(); 323 size[1] = (int) r.height(); 324 if (springLoaded) { 325 size[0] *= mSpringLoadedShrinkFactor; 326 size[1] *= mSpringLoadedShrinkFactor; 327 } 328 return size; 329 } else { 330 size[0] = Integer.MAX_VALUE; 331 size[1] = Integer.MAX_VALUE; 332 return size; 333 } 334 } 335 public RectF estimateItemPosition(CellLayout cl, ItemInfo pendingInfo, 336 int hCell, int vCell, int hSpan, int vSpan) { 337 RectF r = new RectF(); 338 cl.cellToRect(hCell, vCell, hSpan, vSpan, r); 339 if (pendingInfo instanceof PendingAddWidgetInfo) { 340 PendingAddWidgetInfo widgetInfo = (PendingAddWidgetInfo) pendingInfo; 341 Rect p = AppWidgetHostView.getDefaultPaddingForWidget(mContext, 342 widgetInfo.componentName, null); 343 r.top += p.top; 344 r.left += p.left; 345 r.right -= p.right; 346 r.bottom -= p.bottom; 347 } 348 return r; 349 } 350 351 public void buildPageHardwareLayers() { 352 if (getWindowToken() != null) { 353 final int childCount = getChildCount(); 354 for (int i = 0; i < childCount; i++) { 355 CellLayout cl = (CellLayout) getChildAt(i); 356 cl.buildChildrenLayer(); 357 } 358 } 359 } 360 361 public void onDragStart(DragSource source, Object info, int dragAction) { 362 mIsDragOccuring = true; 363 updateChildrenLayersEnabled(); 364 mLauncher.lockScreenOrientationOnLargeUI(); 365 } 366 367 public void onDragEnd() { 368 mIsDragOccuring = false; 369 updateChildrenLayersEnabled(); 370 mLauncher.unlockScreenOrientationOnLargeUI(); 371 } 372 373 /** 374 * Initializes various states for this workspace. 375 */ 376 protected void initWorkspace() { 377 Context context = getContext(); 378 mCurrentPage = mDefaultPage; 379 Launcher.setScreen(mCurrentPage); 380 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 381 mIconCache = app.getIconCache(); 382 mExternalDragOutlinePaint.setAntiAlias(true); 383 setWillNotDraw(false); 384 setChildrenDrawnWithCacheEnabled(true); 385 386 try { 387 final Resources res = getResources(); 388 mBackground = res.getDrawable(R.drawable.apps_customize_bg); 389 } catch (Resources.NotFoundException e) { 390 // In this case, we will skip drawing background protection 391 } 392 393 mWallpaperOffset = new WallpaperOffsetInterpolator(); 394 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 395 mDisplayWidth = display.getWidth(); 396 mDisplayHeight = display.getHeight(); 397 mWallpaperTravelWidth = (int) (mDisplayWidth * 398 wallpaperTravelToScreenWidthRatio(mDisplayWidth, mDisplayHeight)); 399 400 mFlingThresholdVelocity = (int) (FLING_THRESHOLD_VELOCITY * mDensity); 401 402 } 403 404 @Override 405 protected int getScrollMode() { 406 return SmoothPagedView.X_LARGE_MODE; 407 } 408 409 @Override 410 protected void onViewAdded(View child) { 411 super.onViewAdded(child); 412 if (!(child instanceof CellLayout)) { 413 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 414 } 415 CellLayout cl = ((CellLayout) child); 416 cl.setOnInterceptTouchListener(this); 417 cl.setClickable(true); 418 cl.enableHardwareLayers(); 419 } 420 421 /** 422 * @return The open folder on the current screen, or null if there is none 423 */ 424 Folder getOpenFolder() { 425 DragLayer dragLayer = mLauncher.getDragLayer(); 426 int count = dragLayer.getChildCount(); 427 for (int i = 0; i < count; i++) { 428 View child = dragLayer.getChildAt(i); 429 if (child instanceof Folder) { 430 Folder folder = (Folder) child; 431 if (folder.getInfo().opened) 432 return folder; 433 } 434 } 435 return null; 436 } 437 438 boolean isTouchActive() { 439 return mTouchState != TOUCH_STATE_REST; 440 } 441 442 /** 443 * Adds the specified child in the specified screen. The position and dimension of 444 * the child are defined by x, y, spanX and spanY. 445 * 446 * @param child The child to add in one of the workspace's screens. 447 * @param screen The screen in which to add the child. 448 * @param x The X position of the child in the screen's grid. 449 * @param y The Y position of the child in the screen's grid. 450 * @param spanX The number of cells spanned horizontally by the child. 451 * @param spanY The number of cells spanned vertically by the child. 452 */ 453 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY) { 454 addInScreen(child, container, screen, x, y, spanX, spanY, false); 455 } 456 457 /** 458 * Adds the specified child in the specified screen. The position and dimension of 459 * the child are defined by x, y, spanX and spanY. 460 * 461 * @param child The child to add in one of the workspace's screens. 462 * @param screen The screen in which to add the child. 463 * @param x The X position of the child in the screen's grid. 464 * @param y The Y position of the child in the screen's grid. 465 * @param spanX The number of cells spanned horizontally by the child. 466 * @param spanY The number of cells spanned vertically by the child. 467 * @param insert When true, the child is inserted at the beginning of the children list. 468 */ 469 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY, 470 boolean insert) { 471 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 472 if (screen < 0 || screen >= getChildCount()) { 473 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 474 + " (was " + screen + "); skipping child"); 475 return; 476 } 477 } 478 479 final CellLayout layout; 480 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 481 layout = mLauncher.getHotseat().getLayout(); 482 child.setOnKeyListener(null); 483 484 // Hide folder title in the hotseat 485 if (child instanceof FolderIcon) { 486 ((FolderIcon) child).setTextVisible(false); 487 } 488 489 if (screen < 0) { 490 screen = mLauncher.getHotseat().getOrderInHotseat(x, y); 491 } else { 492 // Note: We do this to ensure that the hotseat is always laid out in the orientation 493 // of the hotseat in order regardless of which orientation they were added 494 x = mLauncher.getHotseat().getCellXFromOrder(screen); 495 y = mLauncher.getHotseat().getCellYFromOrder(screen); 496 } 497 } else { 498 // Show folder title if not in the hotseat 499 if (child instanceof FolderIcon) { 500 ((FolderIcon) child).setTextVisible(true); 501 } 502 503 layout = (CellLayout) getChildAt(screen); 504 child.setOnKeyListener(new IconKeyEventListener()); 505 } 506 507 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 508 if (lp == null) { 509 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 510 } else { 511 lp.cellX = x; 512 lp.cellY = y; 513 lp.cellHSpan = spanX; 514 lp.cellVSpan = spanY; 515 } 516 517 if (spanX < 0 && spanY < 0) { 518 lp.isLockedToGrid = false; 519 } 520 521 // Get the canonical child id to uniquely represent this view in this screen 522 int childId = LauncherModel.getCellLayoutChildId(container, screen, x, y, spanX, spanY); 523 boolean markCellsAsOccupied = !(child instanceof Folder); 524 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 525 // TODO: This branch occurs when the workspace is adding views 526 // outside of the defined grid 527 // maybe we should be deleting these items from the LauncherModel? 528 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 529 } 530 531 if (!(child instanceof Folder)) { 532 child.setHapticFeedbackEnabled(false); 533 child.setOnLongClickListener(mLongClickListener); 534 } 535 if (child instanceof DropTarget) { 536 mDragController.addDropTarget((DropTarget) child); 537 } 538 } 539 540 /** 541 * Check if the point (x, y) hits a given page. 542 */ 543 private boolean hitsPage(int index, float x, float y) { 544 final View page = getChildAt(index); 545 if (page != null) { 546 float[] localXY = { x, y }; 547 mapPointFromSelfToChild(page, localXY); 548 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 549 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 550 } 551 return false; 552 } 553 554 @Override 555 protected boolean hitsPreviousPage(float x, float y) { 556 // mNextPage is set to INVALID_PAGE whenever we are stationary. 557 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 558 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 559 560 // Only allow tap to next page on large devices, where there's significant margin outside 561 // the active workspace 562 return LauncherApplication.isScreenLarge() && hitsPage(current - 1, x, y); 563 } 564 565 @Override 566 protected boolean hitsNextPage(float x, float y) { 567 // mNextPage is set to INVALID_PAGE whenever we are stationary. 568 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 569 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 570 571 // Only allow tap to next page on large devices, where there's significant margin outside 572 // the active workspace 573 return LauncherApplication.isScreenLarge() && hitsPage(current + 1, x, y); 574 } 575 576 /** 577 * Called directly from a CellLayout (not by the framework), after we've been added as a 578 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 579 * that it should intercept touch events, which is not something that is normally supported. 580 */ 581 @Override 582 public boolean onTouch(View v, MotionEvent event) { 583 return (isSmall() || mIsSwitchingState); 584 } 585 586 public boolean isSwitchingState() { 587 return mIsSwitchingState; 588 } 589 590 protected void onWindowVisibilityChanged (int visibility) { 591 mLauncher.onWindowVisibilityChanged(visibility); 592 } 593 594 @Override 595 public boolean dispatchUnhandledMove(View focused, int direction) { 596 if (isSmall() || mIsSwitchingState) { 597 // when the home screens are shrunken, shouldn't allow side-scrolling 598 return false; 599 } 600 return super.dispatchUnhandledMove(focused, direction); 601 } 602 603 @Override 604 public boolean onInterceptTouchEvent(MotionEvent ev) { 605 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 606 case MotionEvent.ACTION_DOWN: 607 mXDown = ev.getX(); 608 mYDown = ev.getY(); 609 break; 610 case MotionEvent.ACTION_POINTER_UP: 611 case MotionEvent.ACTION_UP: 612 if (mTouchState == TOUCH_STATE_REST) { 613 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 614 if (!currentPage.lastDownOnOccupiedCell()) { 615 onWallpaperTap(ev); 616 } 617 } 618 } 619 return super.onInterceptTouchEvent(ev); 620 } 621 622 @Override 623 protected void determineScrollingStart(MotionEvent ev) { 624 if (!isSmall() && !mIsSwitchingState) { 625 float deltaX = Math.abs(ev.getX() - mXDown); 626 float deltaY = Math.abs(ev.getY() - mYDown); 627 628 if (Float.compare(deltaX, 0f) == 0) return; 629 630 float slope = deltaY / deltaX; 631 float theta = (float) Math.atan(slope); 632 633 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 634 cancelCurrentPageLongPress(); 635 } 636 637 if (theta > MAX_SWIPE_ANGLE) { 638 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 639 return; 640 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 641 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 642 // increase the touch slop to make it harder to begin scrolling the workspace. This 643 // results in vertically scrolling widgets to more easily. The higher the angle, the 644 // more we increase touch slop. 645 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 646 float extraRatio = (float) 647 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 648 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 649 } else { 650 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 651 super.determineScrollingStart(ev); 652 } 653 } 654 } 655 656 @Override 657 protected boolean isScrollingIndicatorEnabled() { 658 return mState != State.SPRING_LOADED; 659 } 660 661 protected void onPageBeginMoving() { 662 super.onPageBeginMoving(); 663 664 if (isHardwareAccelerated()) { 665 updateChildrenLayersEnabled(); 666 } else { 667 if (mNextPage != INVALID_PAGE) { 668 // we're snapping to a particular screen 669 enableChildrenCache(mCurrentPage, mNextPage); 670 } else { 671 // this is when user is actively dragging a particular screen, they might 672 // swipe it either left or right (but we won't advance by more than one screen) 673 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 674 } 675 } 676 677 // Only show page outlines as we pan if we are on large screen 678 if (LauncherApplication.isScreenLarge()) { 679 showOutlines(); 680 } 681 682 // Show the scroll indicator as you pan the page 683 showScrollingIndicator(false); 684 } 685 686 protected void onPageEndMoving() { 687 super.onPageEndMoving(); 688 689 if (isHardwareAccelerated()) { 690 updateChildrenLayersEnabled(); 691 } else { 692 clearChildrenCache(); 693 } 694 695 696 if (mDragController.isDragging()) { 697 if (isSmall()) { 698 // If we are in springloaded mode, then force an event to check if the current touch 699 // is under a new page (to scroll to) 700 mDragController.forceMoveEvent(); 701 } 702 } else { 703 // If we are not mid-dragging, hide the page outlines if we are on a large screen 704 if (LauncherApplication.isScreenLarge()) { 705 hideOutlines(); 706 } 707 708 // Hide the scroll indicator as you pan the page 709 if (!mDragController.isDragging()) { 710 hideScrollingIndicator(false); 711 } 712 } 713 mOverScrollMaxBackgroundAlpha = 0.0f; 714 mOverScrollPageIndex = -1; 715 716 if (mDelayedResizeRunnable != null) { 717 mDelayedResizeRunnable.run(); 718 mDelayedResizeRunnable = null; 719 } 720 } 721 722 @Override 723 protected void notifyPageSwitchListener() { 724 super.notifyPageSwitchListener(); 725 Launcher.setScreen(mCurrentPage); 726 }; 727 728 // As a ratio of screen height, the total distance we want the parallax effect to span 729 // horizontally 730 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 731 float aspectRatio = width / (float) height; 732 733 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 734 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 735 // We will use these two data points to extrapolate how much the wallpaper parallax effect 736 // to span (ie travel) at any aspect ratio: 737 738 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 739 final float ASPECT_RATIO_PORTRAIT = 10/16f; 740 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 741 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 742 743 // To find out the desired width at different aspect ratios, we use the following two 744 // formulas, where the coefficient on x is the aspect ratio (width/height): 745 // (16/10)x + y = 1.5 746 // (10/16)x + y = 1.2 747 // We solve for x and y and end up with a final formula: 748 final float x = 749 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 750 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 751 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 752 return x * aspectRatio + y; 753 } 754 755 // The range of scroll values for Workspace 756 private int getScrollRange() { 757 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 758 } 759 760 protected void setWallpaperDimension() { 761 DisplayMetrics displayMetrics = new DisplayMetrics(); 762 mLauncher.getWindowManager().getDefaultDisplay().getRealMetrics(displayMetrics); 763 final int maxDim = Math.max(displayMetrics.widthPixels, displayMetrics.heightPixels); 764 final int minDim = Math.min(displayMetrics.widthPixels, displayMetrics.heightPixels); 765 766 // We need to ensure that there is enough extra space in the wallpaper for the intended 767 // parallax effects 768 if (LauncherApplication.isScreenLarge()) { 769 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 770 mWallpaperHeight = maxDim; 771 } else { 772 mWallpaperWidth = Math.max((int) (minDim * WALLPAPER_SCREENS_SPAN), maxDim); 773 mWallpaperHeight = maxDim; 774 } 775 new Thread("setWallpaperDimension") { 776 public void run() { 777 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 778 } 779 }.start(); 780 } 781 782 public void setVerticalWallpaperOffset(float offset) { 783 mWallpaperOffset.setFinalY(offset); 784 } 785 public float getVerticalWallpaperOffset() { 786 return mWallpaperOffset.getCurrY(); 787 } 788 public void setHorizontalWallpaperOffset(float offset) { 789 mWallpaperOffset.setFinalX(offset); 790 } 791 public float getHorizontalWallpaperOffset() { 792 return mWallpaperOffset.getCurrX(); 793 } 794 795 private float wallpaperOffsetForCurrentScroll() { 796 // The wallpaper travel width is how far, from left to right, the wallpaper will move 797 // at this orientation. On tablets in portrait mode we don't move all the way to the 798 // edges of the wallpaper, or otherwise the parallax effect would be too strong. 799 int wallpaperTravelWidth = mWallpaperWidth; 800 if (LauncherApplication.isScreenLarge()) { 801 wallpaperTravelWidth = mWallpaperTravelWidth; 802 } 803 804 // Set wallpaper offset steps (1 / (number of screens - 1)) 805 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f); 806 807 // For the purposes of computing the scrollRange and overScrollOffset, we assume 808 // that mLayoutScale is 1. This means that when we're in spring-loaded mode, 809 // there's no discrepancy between the wallpaper offset for a given page. 810 float layoutScale = mLayoutScale; 811 mLayoutScale = 1f; 812 int scrollRange = getScrollRange(); 813 814 // Again, we adjust the wallpaper offset to be consistent between values of mLayoutScale 815 float adjustedScrollX = Math.max(0, Math.min(mScrollX, mMaxScrollX)); 816 adjustedScrollX *= mWallpaperScrollRatio; 817 mLayoutScale = layoutScale; 818 819 float scrollProgress = 820 adjustedScrollX / (float) scrollRange; 821 float offsetInDips = wallpaperTravelWidth * scrollProgress + 822 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 823 float offset = offsetInDips / (float) mWallpaperWidth; 824 return offset; 825 } 826 private void syncWallpaperOffsetWithScroll() { 827 final boolean enableWallpaperEffects = isHardwareAccelerated(); 828 if (enableWallpaperEffects) { 829 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 830 } 831 } 832 833 public void updateWallpaperOffsetImmediately() { 834 mUpdateWallpaperOffsetImmediately = true; 835 } 836 837 private void updateWallpaperOffsets() { 838 boolean updateNow = false; 839 boolean keepUpdating = true; 840 if (mUpdateWallpaperOffsetImmediately) { 841 updateNow = true; 842 keepUpdating = false; 843 mWallpaperOffset.jumpToFinal(); 844 mUpdateWallpaperOffsetImmediately = false; 845 } else { 846 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 847 } 848 if (updateNow) { 849 if (mWindowToken != null) { 850 mWallpaperManager.setWallpaperOffsets(mWindowToken, 851 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 852 } 853 } 854 if (keepUpdating) { 855 invalidate(); 856 } 857 } 858 859 @Override 860 protected void updateCurrentPageScroll() { 861 super.updateCurrentPageScroll(); 862 computeWallpaperScrollRatio(mCurrentPage); 863 } 864 865 @Override 866 protected void snapToPage(int whichPage) { 867 super.snapToPage(whichPage); 868 computeWallpaperScrollRatio(whichPage); 869 } 870 871 private void computeWallpaperScrollRatio(int page) { 872 // Here, we determine what the desired scroll would be with and without a layout scale, 873 // and compute a ratio between the two. This allows us to adjust the wallpaper offset 874 // as though there is no layout scale. 875 float layoutScale = mLayoutScale; 876 int scaled = getChildOffset(page) - getRelativeChildOffset(page); 877 mLayoutScale = 1.0f; 878 float unscaled = getChildOffset(page) - getRelativeChildOffset(page); 879 mLayoutScale = layoutScale; 880 if (scaled > 0) { 881 mWallpaperScrollRatio = (1.0f * unscaled) / scaled; 882 } else { 883 mWallpaperScrollRatio = 1f; 884 } 885 } 886 887 class WallpaperOffsetInterpolator { 888 float mFinalHorizontalWallpaperOffset = 0.0f; 889 float mFinalVerticalWallpaperOffset = 0.5f; 890 float mHorizontalWallpaperOffset = 0.0f; 891 float mVerticalWallpaperOffset = 0.5f; 892 long mLastWallpaperOffsetUpdateTime; 893 boolean mIsMovingFast; 894 boolean mOverrideHorizontalCatchupConstant; 895 float mHorizontalCatchupConstant = 0.35f; 896 float mVerticalCatchupConstant = 0.35f; 897 898 public WallpaperOffsetInterpolator() { 899 } 900 901 public void setOverrideHorizontalCatchupConstant(boolean override) { 902 mOverrideHorizontalCatchupConstant = override; 903 } 904 905 public void setHorizontalCatchupConstant(float f) { 906 mHorizontalCatchupConstant = f; 907 } 908 909 public void setVerticalCatchupConstant(float f) { 910 mVerticalCatchupConstant = f; 911 } 912 913 public boolean computeScrollOffset() { 914 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 915 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 916 mIsMovingFast = false; 917 return false; 918 } 919 boolean isLandscape = mDisplayWidth > mDisplayHeight; 920 921 long currentTime = System.currentTimeMillis(); 922 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 923 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 924 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 925 926 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 927 if (!mIsMovingFast && xdiff > 0.07) { 928 mIsMovingFast = true; 929 } 930 931 float fractionToCatchUpIn1MsHorizontal; 932 if (mOverrideHorizontalCatchupConstant) { 933 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 934 } else if (mIsMovingFast) { 935 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 936 } else { 937 // slow 938 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 939 } 940 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 941 942 fractionToCatchUpIn1MsHorizontal /= 33f; 943 fractionToCatchUpIn1MsVertical /= 33f; 944 945 final float UPDATE_THRESHOLD = 0.00001f; 946 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 947 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 948 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 949 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 950 951 // Don't have any lag between workspace and wallpaper on non-large devices 952 if (!LauncherApplication.isScreenLarge() || jumpToFinalValue) { 953 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 954 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 955 } else { 956 float percentToCatchUpVertical = 957 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 958 float percentToCatchUpHorizontal = 959 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 960 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 961 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 962 } 963 964 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 965 return true; 966 } 967 968 public float getCurrX() { 969 return mHorizontalWallpaperOffset; 970 } 971 972 public float getFinalX() { 973 return mFinalHorizontalWallpaperOffset; 974 } 975 976 public float getCurrY() { 977 return mVerticalWallpaperOffset; 978 } 979 980 public float getFinalY() { 981 return mFinalVerticalWallpaperOffset; 982 } 983 984 public void setFinalX(float x) { 985 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 986 } 987 988 public void setFinalY(float y) { 989 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 990 } 991 992 public void jumpToFinal() { 993 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 994 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 995 } 996 } 997 998 @Override 999 public void computeScroll() { 1000 super.computeScroll(); 1001 syncWallpaperOffsetWithScroll(); 1002 } 1003 1004 void showOutlines() { 1005 if (!isSmall() && !mIsSwitchingState) { 1006 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1007 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1008 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 1009 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 1010 mChildrenOutlineFadeInAnimation.start(); 1011 } 1012 } 1013 1014 void hideOutlines() { 1015 if (!isSmall() && !mIsSwitchingState) { 1016 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1017 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1018 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 1019 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 1020 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 1021 mChildrenOutlineFadeOutAnimation.start(); 1022 } 1023 } 1024 1025 public void showOutlinesTemporarily() { 1026 if (!mIsPageMoving && !isTouchActive()) { 1027 snapToPage(mCurrentPage); 1028 } 1029 } 1030 1031 public void setChildrenOutlineAlpha(float alpha) { 1032 mChildrenOutlineAlpha = alpha; 1033 for (int i = 0; i < getChildCount(); i++) { 1034 CellLayout cl = (CellLayout) getChildAt(i); 1035 cl.setBackgroundAlpha(alpha); 1036 } 1037 } 1038 1039 public float getChildrenOutlineAlpha() { 1040 return mChildrenOutlineAlpha; 1041 } 1042 1043 void disableBackground() { 1044 mDrawBackground = false; 1045 } 1046 void enableBackground() { 1047 mDrawBackground = true; 1048 } 1049 1050 private void animateBackgroundGradient(float finalAlpha, boolean animated) { 1051 if (mBackground == null) return; 1052 if (mBackgroundFadeInAnimation != null) { 1053 mBackgroundFadeInAnimation.cancel(); 1054 mBackgroundFadeInAnimation = null; 1055 } 1056 if (mBackgroundFadeOutAnimation != null) { 1057 mBackgroundFadeOutAnimation.cancel(); 1058 mBackgroundFadeOutAnimation = null; 1059 } 1060 float startAlpha = getBackgroundAlpha(); 1061 if (finalAlpha != startAlpha) { 1062 if (animated) { 1063 mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(startAlpha, finalAlpha); 1064 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1065 public void onAnimationUpdate(ValueAnimator animation) { 1066 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1067 } 1068 }); 1069 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1070 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1071 mBackgroundFadeOutAnimation.start(); 1072 } else { 1073 setBackgroundAlpha(finalAlpha); 1074 } 1075 } 1076 } 1077 1078 public void setBackgroundAlpha(float alpha) { 1079 if (alpha != mBackgroundAlpha) { 1080 mBackgroundAlpha = alpha; 1081 invalidate(); 1082 } 1083 } 1084 1085 public float getBackgroundAlpha() { 1086 return mBackgroundAlpha; 1087 } 1088 1089 /** 1090 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 1091 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 1092 * as being larger. This method computes what offset the rotated view should be translated 1093 * in order to minimize this perceived gap. 1094 * @param degrees Angle of the view 1095 * @param width Width of the view 1096 * @param height Height of the view 1097 * @return Offset to be used in a View.setTranslationX() call 1098 */ 1099 private float getOffsetXForRotation(float degrees, int width, int height) { 1100 mMatrix.reset(); 1101 mCamera.save(); 1102 mCamera.rotateY(Math.abs(degrees)); 1103 mCamera.getMatrix(mMatrix); 1104 mCamera.restore(); 1105 1106 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 1107 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 1108 mTempFloat2[0] = width; 1109 mTempFloat2[1] = height; 1110 mMatrix.mapPoints(mTempFloat2); 1111 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 1112 } 1113 1114 float backgroundAlphaInterpolator(float r) { 1115 float pivotA = 0.1f; 1116 float pivotB = 0.4f; 1117 if (r < pivotA) { 1118 return 0; 1119 } else if (r > pivotB) { 1120 return 1.0f; 1121 } else { 1122 return (r - pivotA)/(pivotB - pivotA); 1123 } 1124 } 1125 1126 float overScrollBackgroundAlphaInterpolator(float r) { 1127 float threshold = 0.08f; 1128 1129 if (r > mOverScrollMaxBackgroundAlpha) { 1130 mOverScrollMaxBackgroundAlpha = r; 1131 } else if (r < mOverScrollMaxBackgroundAlpha) { 1132 r = mOverScrollMaxBackgroundAlpha; 1133 } 1134 1135 return Math.min(r / threshold, 1.0f); 1136 } 1137 1138 private void screenScrolledLargeUI(int screenCenter) { 1139 if (isSwitchingState()) return; 1140 boolean isInOverscroll = false; 1141 for (int i = 0; i < getChildCount(); i++) { 1142 CellLayout cl = (CellLayout) getChildAt(i); 1143 if (cl != null) { 1144 float scrollProgress = getScrollProgress(screenCenter, cl, i); 1145 float rotation = WORKSPACE_ROTATION * scrollProgress; 1146 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1147 1148 // If the current page (i) is being over scrolled, we use a different 1149 // set of rules for setting the background alpha multiplier. 1150 if (!isSmall()) { 1151 if ((mOverScrollX < 0 && i == 0) || (mOverScrollX > mMaxScrollX && 1152 i == getChildCount() -1)) { 1153 isInOverscroll = true; 1154 rotation *= -1; 1155 cl.setBackgroundAlphaMultiplier( 1156 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 1157 mOverScrollPageIndex = i; 1158 cl.setOverScrollAmount(Math.abs(scrollProgress), i == 0); 1159 cl.setPivotX(cl.getMeasuredWidth() * (i == 0 ? 0.75f : 0.25f)); 1160 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1161 cl.setOverscrollTransformsDirty(true); 1162 } else if (mOverScrollPageIndex != i) { 1163 cl.setBackgroundAlphaMultiplier( 1164 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1165 } 1166 } 1167 cl.setTranslationX(translationX); 1168 cl.setRotationY(rotation); 1169 if (mFadeInAdjacentScreens && !isSmall()) { 1170 float alpha = 1 - Math.abs(scrollProgress); 1171 cl.setAlpha(alpha); 1172 } 1173 } 1174 } 1175 if (!isSwitchingState() && !isInOverscroll) { 1176 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1177 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1178 } 1179 invalidate(); 1180 } 1181 1182 private void screenScrolledStandardUI(int screenCenter) { 1183 if (mOverScrollX < 0 || mOverScrollX > mMaxScrollX) { 1184 int index = mOverScrollX < 0 ? 0 : getChildCount() - 1; 1185 CellLayout cl = (CellLayout) getChildAt(index); 1186 float scrollProgress = getScrollProgress(screenCenter, cl, index); 1187 cl.setOverScrollAmount(Math.abs(scrollProgress), index == 0); 1188 float rotation = - WORKSPACE_OVERSCROLL_ROTATION * scrollProgress; 1189 cl.setCameraDistance(mDensity * CAMERA_DISTANCE); 1190 cl.setPivotX(cl.getMeasuredWidth() * (index == 0 ? 0.75f : 0.25f)); 1191 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1192 cl.setRotationY(rotation); 1193 cl.setOverscrollTransformsDirty(true); 1194 setFadeForOverScroll(Math.abs(scrollProgress)); 1195 } else { 1196 if (mOverscrollFade != 0) { 1197 setFadeForOverScroll(0); 1198 } 1199 // We don't want to mess with the translations during transitions 1200 if (!isSwitchingState()) { 1201 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1202 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1203 } 1204 } 1205 } 1206 1207 @Override 1208 protected void screenScrolled(int screenCenter) { 1209 if (LauncherApplication.isScreenLarge()) { 1210 // We don't call super.screenScrolled() here because we handle the adjacent pages alpha 1211 // ourselves (for efficiency), and there are no scrolling indicators to update. 1212 screenScrolledLargeUI(screenCenter); 1213 } else { 1214 super.screenScrolled(screenCenter); 1215 screenScrolledStandardUI(screenCenter); 1216 } 1217 } 1218 1219 @Override 1220 protected void overScroll(float amount) { 1221 if (LauncherApplication.isScreenLarge()) { 1222 dampedOverScroll(amount); 1223 } else { 1224 acceleratedOverScroll(amount); 1225 } 1226 } 1227 1228 protected void onAttachedToWindow() { 1229 super.onAttachedToWindow(); 1230 mWindowToken = getWindowToken(); 1231 computeScroll(); 1232 mDragController.setWindowToken(mWindowToken); 1233 } 1234 1235 protected void onDetachedFromWindow() { 1236 mWindowToken = null; 1237 } 1238 1239 @Override 1240 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1241 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1242 mUpdateWallpaperOffsetImmediately = true; 1243 } 1244 super.onLayout(changed, left, top, right, bottom); 1245 } 1246 1247 @Override 1248 protected void onDraw(Canvas canvas) { 1249 updateWallpaperOffsets(); 1250 1251 // Draw the background gradient if necessary 1252 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1253 int alpha = (int) (mBackgroundAlpha * 255); 1254 mBackground.setAlpha(alpha); 1255 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1256 getMeasuredHeight()); 1257 mBackground.draw(canvas); 1258 } 1259 1260 super.onDraw(canvas); 1261 } 1262 1263 boolean isDrawingBackgroundGradient() { 1264 return (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground); 1265 } 1266 1267 @Override 1268 protected void dispatchDraw(Canvas canvas) { 1269 super.dispatchDraw(canvas); 1270 1271 if (mInScrollArea && !LauncherApplication.isScreenLarge()) { 1272 final int width = getWidth(); 1273 final int height = getHeight(); 1274 final int pageHeight = getChildAt(0).getHeight(); 1275 1276 // Set the height of the outline to be the height of the page 1277 final int offset = (height - pageHeight - mPaddingTop - mPaddingBottom) / 2; 1278 final int paddingTop = mPaddingTop + offset; 1279 final int paddingBottom = mPaddingBottom + offset; 1280 1281 final int page = (mNextPage != INVALID_PAGE ? mNextPage : mCurrentPage); 1282 final CellLayout leftPage = (CellLayout) getChildAt(page - 1); 1283 final CellLayout rightPage = (CellLayout) getChildAt(page + 1); 1284 1285 if (leftPage != null && leftPage.getIsDragOverlapping()) { 1286 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left_holo); 1287 d.setBounds(mScrollX, paddingTop, mScrollX + d.getIntrinsicWidth(), 1288 height - paddingBottom); 1289 d.draw(canvas); 1290 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 1291 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right_holo); 1292 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), paddingTop, mScrollX + width, 1293 height - paddingBottom); 1294 d.draw(canvas); 1295 } 1296 } 1297 } 1298 1299 @Override 1300 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1301 if (!mLauncher.isAllAppsVisible()) { 1302 final Folder openFolder = getOpenFolder(); 1303 if (openFolder != null) { 1304 return openFolder.requestFocus(direction, previouslyFocusedRect); 1305 } else { 1306 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1307 } 1308 } 1309 return false; 1310 } 1311 1312 @Override 1313 public int getDescendantFocusability() { 1314 if (isSmall()) { 1315 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1316 } 1317 return super.getDescendantFocusability(); 1318 } 1319 1320 @Override 1321 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1322 if (!mLauncher.isAllAppsVisible()) { 1323 final Folder openFolder = getOpenFolder(); 1324 if (openFolder != null) { 1325 openFolder.addFocusables(views, direction); 1326 } else { 1327 super.addFocusables(views, direction, focusableMode); 1328 } 1329 } 1330 } 1331 1332 public boolean isSmall() { 1333 return mState == State.SMALL || mState == State.SPRING_LOADED; 1334 } 1335 1336 void enableChildrenCache(int fromPage, int toPage) { 1337 if (fromPage > toPage) { 1338 final int temp = fromPage; 1339 fromPage = toPage; 1340 toPage = temp; 1341 } 1342 1343 final int screenCount = getChildCount(); 1344 1345 fromPage = Math.max(fromPage, 0); 1346 toPage = Math.min(toPage, screenCount - 1); 1347 1348 for (int i = fromPage; i <= toPage; i++) { 1349 final CellLayout layout = (CellLayout) getChildAt(i); 1350 layout.setChildrenDrawnWithCacheEnabled(true); 1351 layout.setChildrenDrawingCacheEnabled(true); 1352 } 1353 } 1354 1355 void clearChildrenCache() { 1356 final int screenCount = getChildCount(); 1357 for (int i = 0; i < screenCount; i++) { 1358 final CellLayout layout = (CellLayout) getChildAt(i); 1359 layout.setChildrenDrawnWithCacheEnabled(false); 1360 // In software mode, we don't want the items to continue to be drawn into bitmaps 1361 if (!isHardwareAccelerated()) { 1362 layout.setChildrenDrawingCacheEnabled(false); 1363 } 1364 } 1365 } 1366 1367 private void updateChildrenLayersEnabled() { 1368 boolean small = isSmall() || mIsSwitchingState; 1369 boolean dragging = mAnimatingViewIntoPlace || mIsDragOccuring; 1370 boolean enableChildrenLayers = small || dragging || isPageMoving(); 1371 1372 if (enableChildrenLayers != mChildrenLayersEnabled) { 1373 mChildrenLayersEnabled = enableChildrenLayers; 1374 for (int i = 0; i < getPageCount(); i++) { 1375 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(mChildrenLayersEnabled); 1376 } 1377 } 1378 } 1379 1380 protected void onWallpaperTap(MotionEvent ev) { 1381 final int[] position = mTempCell; 1382 getLocationOnScreen(position); 1383 1384 int pointerIndex = ev.getActionIndex(); 1385 position[0] += (int) ev.getX(pointerIndex); 1386 position[1] += (int) ev.getY(pointerIndex); 1387 1388 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1389 ev.getAction() == MotionEvent.ACTION_UP 1390 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1391 position[0], position[1], 0, null); 1392 } 1393 1394 /* 1395 * This interpolator emulates the rate at which the perceived scale of an object changes 1396 * as its distance from a camera increases. When this interpolator is applied to a scale 1397 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1398 * from the camera. 1399 */ 1400 static class ZInterpolator implements TimeInterpolator { 1401 private float focalLength; 1402 1403 public ZInterpolator(float foc) { 1404 focalLength = foc; 1405 } 1406 1407 public float getInterpolation(float input) { 1408 return (1.0f - focalLength / (focalLength + input)) / 1409 (1.0f - focalLength / (focalLength + 1.0f)); 1410 } 1411 } 1412 1413 /* 1414 * The exact reverse of ZInterpolator. 1415 */ 1416 static class InverseZInterpolator implements TimeInterpolator { 1417 private ZInterpolator zInterpolator; 1418 public InverseZInterpolator(float foc) { 1419 zInterpolator = new ZInterpolator(foc); 1420 } 1421 public float getInterpolation(float input) { 1422 return 1 - zInterpolator.getInterpolation(1 - input); 1423 } 1424 } 1425 1426 /* 1427 * ZInterpolator compounded with an ease-out. 1428 */ 1429 static class ZoomOutInterpolator implements TimeInterpolator { 1430 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(0.75f); 1431 private final ZInterpolator zInterpolator = new ZInterpolator(0.13f); 1432 1433 public float getInterpolation(float input) { 1434 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1435 } 1436 } 1437 1438 /* 1439 * InvereZInterpolator compounded with an ease-out. 1440 */ 1441 static class ZoomInInterpolator implements TimeInterpolator { 1442 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1443 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1444 1445 public float getInterpolation(float input) { 1446 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1447 } 1448 } 1449 1450 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1451 1452 /* 1453 * 1454 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1455 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1456 * 1457 * These methods mark the appropriate pages as accepting drops (which alters their visual 1458 * appearance). 1459 * 1460 */ 1461 public void onDragStartedWithItem(View v) { 1462 final Canvas canvas = new Canvas(); 1463 1464 // We need to add extra padding to the bitmap to make room for the glow effect 1465 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1466 1467 // The outline is used to visualize where the item will land if dropped 1468 mDragOutline = createDragOutline(v, canvas, bitmapPadding); 1469 } 1470 1471 public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, Paint alphaClipPaint) { 1472 final Canvas canvas = new Canvas(); 1473 1474 // We need to add extra padding to the bitmap to make room for the glow effect 1475 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1476 1477 int[] size = estimateItemSize(info.spanX, info.spanY, info, false); 1478 1479 // The outline is used to visualize where the item will land if dropped 1480 mDragOutline = createDragOutline(b, canvas, bitmapPadding, size[0], size[1], alphaClipPaint); 1481 } 1482 1483 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1484 // never dragged over 1485 public void onDragStopped(boolean success) { 1486 // In the success case, DragController has already called onDragExit() 1487 if (!success) { 1488 doDragExit(null); 1489 } 1490 } 1491 1492 public void exitWidgetResizeMode() { 1493 DragLayer dragLayer = mLauncher.getDragLayer(); 1494 dragLayer.clearAllResizeFrames(); 1495 } 1496 1497 private void initAnimationArrays() { 1498 final int childCount = getChildCount(); 1499 if (mOldTranslationXs != null) return; 1500 mOldTranslationXs = new float[childCount]; 1501 mOldTranslationYs = new float[childCount]; 1502 mOldScaleXs = new float[childCount]; 1503 mOldScaleYs = new float[childCount]; 1504 mOldBackgroundAlphas = new float[childCount]; 1505 mOldBackgroundAlphaMultipliers = new float[childCount]; 1506 mOldAlphas = new float[childCount]; 1507 mOldRotationYs = new float[childCount]; 1508 mNewTranslationXs = new float[childCount]; 1509 mNewTranslationYs = new float[childCount]; 1510 mNewScaleXs = new float[childCount]; 1511 mNewScaleYs = new float[childCount]; 1512 mNewBackgroundAlphas = new float[childCount]; 1513 mNewBackgroundAlphaMultipliers = new float[childCount]; 1514 mNewAlphas = new float[childCount]; 1515 mNewRotationYs = new float[childCount]; 1516 } 1517 1518 Animator getChangeStateAnimation(final State state, boolean animated) { 1519 return getChangeStateAnimation(state, animated, 0); 1520 } 1521 1522 Animator getChangeStateAnimation(final State state, boolean animated, int delay) { 1523 if (mState == state) { 1524 return null; 1525 } 1526 1527 // Initialize animation arrays for the first time if necessary 1528 initAnimationArrays(); 1529 1530 AnimatorSet anim = animated ? new AnimatorSet() : null; 1531 1532 // Stop any scrolling, move to the current page right away 1533 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1534 1535 final State oldState = mState; 1536 final boolean oldStateIsNormal = (oldState == State.NORMAL); 1537 final boolean oldStateIsSmall = (oldState == State.SMALL); 1538 mState = state; 1539 final boolean stateIsNormal = (state == State.NORMAL); 1540 final boolean stateIsSpringLoaded = (state == State.SPRING_LOADED); 1541 final boolean stateIsSmall = (state == State.SMALL); 1542 float finalScaleFactor = 1.0f; 1543 float finalBackgroundAlpha = stateIsSpringLoaded ? 1.0f : 0f; 1544 float translationX = 0; 1545 float translationY = 0; 1546 boolean zoomIn = true; 1547 1548 if (state != State.NORMAL) { 1549 finalScaleFactor = mSpringLoadedShrinkFactor - (stateIsSmall ? 0.1f : 0); 1550 if (oldStateIsNormal && stateIsSmall) { 1551 zoomIn = false; 1552 setLayoutScale(finalScaleFactor); 1553 updateChildrenLayersEnabled(); 1554 } else { 1555 finalBackgroundAlpha = 1.0f; 1556 setLayoutScale(finalScaleFactor); 1557 } 1558 } else { 1559 setLayoutScale(1.0f); 1560 } 1561 1562 final int duration = zoomIn ? 1563 getResources().getInteger(R.integer.config_workspaceUnshrinkTime) : 1564 getResources().getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1565 for (int i = 0; i < getChildCount(); i++) { 1566 final CellLayout cl = (CellLayout) getChildAt(i); 1567 float rotation = 0f; 1568 float initialAlpha = cl.getAlpha(); 1569 float finalAlphaMultiplierValue = 1f; 1570 float finalAlpha = (!mFadeInAdjacentScreens || stateIsSpringLoaded || 1571 (i == mCurrentPage)) ? 1f : 0f; 1572 1573 // Determine the pages alpha during the state transition 1574 if ((oldStateIsSmall && stateIsNormal) || 1575 (oldStateIsNormal && stateIsSmall)) { 1576 // To/from workspace - only show the current page unless the transition is not 1577 // animated and the animation end callback below doesn't run 1578 if (i == mCurrentPage || !animated) { 1579 finalAlpha = 1f; 1580 finalAlphaMultiplierValue = 0f; 1581 } else { 1582 initialAlpha = 0f; 1583 finalAlpha = 0f; 1584 } 1585 } 1586 1587 // Update the rotation of the screen (don't apply rotation on Phone UI) 1588 if (LauncherApplication.isScreenLarge()) { 1589 if (i < mCurrentPage) { 1590 rotation = WORKSPACE_ROTATION; 1591 } else if (i > mCurrentPage) { 1592 rotation = -WORKSPACE_ROTATION; 1593 } 1594 } 1595 1596 // If the screen is not xlarge, then don't rotate the CellLayouts 1597 // NOTE: If we don't update the side pages alpha, then we should not hide the side 1598 // pages. see unshrink(). 1599 if (LauncherApplication.isScreenLarge()) { 1600 translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1601 } 1602 1603 mOldAlphas[i] = initialAlpha; 1604 mNewAlphas[i] = finalAlpha; 1605 if (animated) { 1606 mOldTranslationXs[i] = cl.getTranslationX(); 1607 mOldTranslationYs[i] = cl.getTranslationY(); 1608 mOldScaleXs[i] = cl.getScaleX(); 1609 mOldScaleYs[i] = cl.getScaleY(); 1610 mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1611 mOldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1612 mOldRotationYs[i] = cl.getRotationY(); 1613 1614 mNewTranslationXs[i] = translationX; 1615 mNewTranslationYs[i] = translationY; 1616 mNewScaleXs[i] = finalScaleFactor; 1617 mNewScaleYs[i] = finalScaleFactor; 1618 mNewBackgroundAlphas[i] = finalBackgroundAlpha; 1619 mNewBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1620 mNewRotationYs[i] = rotation; 1621 } else { 1622 cl.setTranslationX(translationX); 1623 cl.setTranslationY(translationY); 1624 cl.setScaleX(finalScaleFactor); 1625 cl.setScaleY(finalScaleFactor); 1626 cl.setBackgroundAlpha(finalBackgroundAlpha); 1627 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1628 cl.setAlpha(finalAlpha); 1629 cl.setRotationY(rotation); 1630 } 1631 } 1632 1633 if (animated) { 1634 for (int index = 0; index < getChildCount(); index++) { 1635 final int i = index; 1636 final CellLayout cl = (CellLayout) getChildAt(i); 1637 if (mOldAlphas[i] == 0 && mNewAlphas[i] == 0) { 1638 cl.setTranslationX(mNewTranslationXs[i]); 1639 cl.setTranslationY(mNewTranslationYs[i]); 1640 cl.setScaleX(mNewScaleXs[i]); 1641 cl.setScaleY(mNewScaleYs[i]); 1642 cl.setBackgroundAlpha(mNewBackgroundAlphas[i]); 1643 cl.setBackgroundAlphaMultiplier(mNewBackgroundAlphaMultipliers[i]); 1644 cl.setAlpha(mNewAlphas[i]); 1645 cl.setRotationY(mNewRotationYs[i]); 1646 } else { 1647 LauncherViewPropertyAnimator a = new LauncherViewPropertyAnimator(cl); 1648 a.translationX(mNewTranslationXs[i]) 1649 .translationY(mNewTranslationYs[i]) 1650 .scaleX(mNewScaleXs[i]) 1651 .scaleY(mNewScaleYs[i]) 1652 .setDuration(duration) 1653 .setInterpolator(mZoomInInterpolator); 1654 if (mOldAlphas[i] != mNewAlphas[i]) { 1655 a.alpha(mNewAlphas[i]); 1656 } 1657 anim.play(a); 1658 if (mOldRotationYs[i] != 0 || mNewRotationYs[i] != 0) { 1659 ValueAnimator rotate = ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1660 rotate.setInterpolator(new DecelerateInterpolator(2.0f)); 1661 rotate.addUpdateListener(new LauncherAnimatorUpdateListener() { 1662 public void onAnimationUpdate(float a, float b) { 1663 cl.setRotationY(a * 0f + b * 1f); 1664 } 1665 }); 1666 anim.play(rotate); 1667 } 1668 if (mOldBackgroundAlphas[i] != 0 || 1669 mNewBackgroundAlphas[i] != 0 || 1670 mOldBackgroundAlphaMultipliers[i] != 0 || 1671 mNewBackgroundAlphaMultipliers[i] != 0) { 1672 ValueAnimator bgAnim = ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1673 bgAnim.setInterpolator(mZoomInInterpolator); 1674 bgAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1675 public void onAnimationUpdate(float a, float b) { 1676 cl.setBackgroundAlpha( 1677 a * mOldBackgroundAlphas[i] + 1678 b * mNewBackgroundAlphas[i]); 1679 cl.setBackgroundAlphaMultiplier( 1680 a * mOldBackgroundAlphaMultipliers[i] + 1681 b * mNewBackgroundAlphaMultipliers[i]); 1682 } 1683 }); 1684 anim.play(bgAnim); 1685 } 1686 } 1687 } 1688 anim.setStartDelay(delay); 1689 } 1690 1691 if (stateIsSpringLoaded) { 1692 // Right now we're covered by Apps Customize 1693 // Show the background gradient immediately, so the gradient will 1694 // be showing once AppsCustomize disappears 1695 animateBackgroundGradient(getResources().getInteger( 1696 R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, false); 1697 } else { 1698 // Fade the background gradient away 1699 animateBackgroundGradient(0f, true); 1700 } 1701 return anim; 1702 } 1703 1704 @Override 1705 public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) { 1706 mIsSwitchingState = true; 1707 } 1708 1709 @Override 1710 public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) { 1711 mIsSwitchingState = false; 1712 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 1713 updateChildrenLayersEnabled(); 1714 // The code in getChangeStateAnimation to determine initialAlpha and finalAlpha will ensure 1715 // ensure that only the current page is visible during (and subsequently, after) the 1716 // transition animation. If fade adjacent pages is disabled, then re-enable the page 1717 // visibility after the transition animation. 1718 if (!mFadeInAdjacentScreens) { 1719 for (int i = 0; i < getChildCount(); i++) { 1720 final CellLayout cl = (CellLayout) getChildAt(i); 1721 cl.setAlpha(1f); 1722 } 1723 } 1724 } 1725 1726 @Override 1727 public View getContent() { 1728 return this; 1729 } 1730 1731 /** 1732 * Draw the View v into the given Canvas. 1733 * 1734 * @param v the view to draw 1735 * @param destCanvas the canvas to draw on 1736 * @param padding the horizontal and vertical padding to use when drawing 1737 */ 1738 private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { 1739 final Rect clipRect = mTempRect; 1740 v.getDrawingRect(clipRect); 1741 1742 boolean textVisible = false; 1743 1744 destCanvas.save(); 1745 if (v instanceof TextView && pruneToDrawable) { 1746 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1747 clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); 1748 destCanvas.translate(padding / 2, padding / 2); 1749 d.draw(destCanvas); 1750 } else { 1751 if (v instanceof FolderIcon) { 1752 // For FolderIcons the text can bleed into the icon area, and so we need to 1753 // hide the text completely (which can't be achieved by clipping). 1754 if (((FolderIcon) v).getTextVisible()) { 1755 ((FolderIcon) v).setTextVisible(false); 1756 textVisible = true; 1757 } 1758 } else if (v instanceof BubbleTextView) { 1759 final BubbleTextView tv = (BubbleTextView) v; 1760 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1761 tv.getLayout().getLineTop(0); 1762 } else if (v instanceof TextView) { 1763 final TextView tv = (TextView) v; 1764 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1765 tv.getLayout().getLineTop(0); 1766 } 1767 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1768 destCanvas.clipRect(clipRect, Op.REPLACE); 1769 v.draw(destCanvas); 1770 1771 // Restore text visibility of FolderIcon if necessary 1772 if (textVisible) { 1773 ((FolderIcon) v).setTextVisible(true); 1774 } 1775 } 1776 destCanvas.restore(); 1777 } 1778 1779 /** 1780 * Returns a new bitmap to show when the given View is being dragged around. 1781 * Responsibility for the bitmap is transferred to the caller. 1782 */ 1783 public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1784 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1785 Bitmap b; 1786 1787 if (v instanceof TextView) { 1788 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1789 b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, 1790 d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); 1791 } else { 1792 b = Bitmap.createBitmap( 1793 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1794 } 1795 1796 canvas.setBitmap(b); 1797 drawDragView(v, canvas, padding, true); 1798 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 1799 canvas.drawColor(mDragViewMultiplyColor, PorterDuff.Mode.MULTIPLY); 1800 canvas.setBitmap(null); 1801 1802 return b; 1803 } 1804 1805 /** 1806 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1807 * Responsibility for the bitmap is transferred to the caller. 1808 */ 1809 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1810 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1811 final Bitmap b = Bitmap.createBitmap( 1812 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1813 1814 canvas.setBitmap(b); 1815 drawDragView(v, canvas, padding, true); 1816 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1817 canvas.setBitmap(null); 1818 return b; 1819 } 1820 1821 /** 1822 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1823 * Responsibility for the bitmap is transferred to the caller. 1824 */ 1825 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h, 1826 Paint alphaClipPaint) { 1827 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1828 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1829 canvas.setBitmap(b); 1830 1831 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 1832 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 1833 (h - padding) / (float) orig.getHeight()); 1834 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 1835 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 1836 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 1837 1838 // center the image 1839 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 1840 1841 canvas.drawBitmap(orig, src, dst, null); 1842 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor, 1843 alphaClipPaint); 1844 canvas.setBitmap(null); 1845 1846 return b; 1847 } 1848 1849 /** 1850 * Creates a drag outline to represent a drop (that we don't have the actual information for 1851 * yet). May be changed in the future to alter the drop outline slightly depending on the 1852 * clip description mime data. 1853 */ 1854 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 1855 Resources r = getResources(); 1856 final int outlineColor = r.getColor(android.R.color.holo_blue_light); 1857 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 1858 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 1859 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 1860 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 1861 final Bitmap b = Bitmap.createBitmap( 1862 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 1863 1864 canvas.setBitmap(b); 1865 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 1866 rectRadius, rectRadius, mExternalDragOutlinePaint); 1867 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1868 canvas.setBitmap(null); 1869 return b; 1870 } 1871 1872 void startDrag(CellLayout.CellInfo cellInfo) { 1873 View child = cellInfo.cell; 1874 1875 // Make sure the drag was started by a long press as opposed to a long click. 1876 if (!child.isInTouchMode()) { 1877 return; 1878 } 1879 1880 mDragInfo = cellInfo; 1881 child.setVisibility(GONE); 1882 1883 child.clearFocus(); 1884 child.setPressed(false); 1885 1886 final Canvas canvas = new Canvas(); 1887 1888 // We need to add extra padding to the bitmap to make room for the glow effect 1889 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1890 1891 // The outline is used to visualize where the item will land if dropped 1892 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 1893 beginDragShared(child, this); 1894 } 1895 1896 public void beginDragShared(View child, DragSource source) { 1897 Resources r = getResources(); 1898 1899 // We need to add extra padding to the bitmap to make room for the glow effect 1900 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1901 1902 // The drag bitmap follows the touch point around on the screen 1903 final Bitmap b = createDragBitmap(child, new Canvas(), bitmapPadding); 1904 1905 final int bmpWidth = b.getWidth(); 1906 1907 mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 1908 final int dragLayerX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 1909 int dragLayerY = mTempXY[1] - bitmapPadding / 2; 1910 1911 Point dragVisualizeOffset = null; 1912 Rect dragRect = null; 1913 if (child instanceof BubbleTextView || child instanceof PagedViewIcon) { 1914 int iconSize = r.getDimensionPixelSize(R.dimen.app_icon_size); 1915 int iconPaddingTop = r.getDimensionPixelSize(R.dimen.app_icon_padding_top); 1916 int top = child.getPaddingTop(); 1917 int left = (bmpWidth - iconSize) / 2; 1918 int right = left + iconSize; 1919 int bottom = top + iconSize; 1920 dragLayerY += top; 1921 // Note: The drag region is used to calculate drag layer offsets, but the 1922 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 1923 dragVisualizeOffset = new Point(-bitmapPadding / 2, iconPaddingTop - bitmapPadding / 2); 1924 dragRect = new Rect(left, top, right, bottom); 1925 } else if (child instanceof FolderIcon) { 1926 int previewSize = r.getDimensionPixelSize(R.dimen.folder_preview_size); 1927 dragRect = new Rect(0, 0, child.getWidth(), previewSize); 1928 } 1929 1930 // Clear the pressed state if necessary 1931 if (child instanceof BubbleTextView) { 1932 BubbleTextView icon = (BubbleTextView) child; 1933 icon.clearPressedOrFocusedBackground(); 1934 } 1935 1936 mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 1937 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect); 1938 b.recycle(); 1939 1940 // Show the scrolling indicator when you pick up an item 1941 showScrollingIndicator(false); 1942 } 1943 1944 void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, int screen, 1945 int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { 1946 View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); 1947 1948 final int[] cellXY = new int[2]; 1949 target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1950 addInScreen(view, container, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1951 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, cellXY[0], 1952 cellXY[1]); 1953 } 1954 1955 public boolean transitionStateShouldAllowDrop() { 1956 return (!isSwitchingState() || mTransitionProgress > 0.5f); 1957 } 1958 1959 /** 1960 * {@inheritDoc} 1961 */ 1962 public boolean acceptDrop(DragObject d) { 1963 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1964 if (d.dragSource != this) { 1965 // Don't accept the drop if we're not over a screen at time of drop 1966 if (mDragTargetLayout == null) { 1967 return false; 1968 } 1969 if (!transitionStateShouldAllowDrop()) return false; 1970 1971 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 1972 d.dragView, mDragViewVisualCenter); 1973 1974 // We want the point to be mapped to the dragTarget. 1975 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 1976 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 1977 } else { 1978 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 1979 } 1980 1981 int spanX = 1; 1982 int spanY = 1; 1983 View ignoreView = null; 1984 if (mDragInfo != null) { 1985 final CellLayout.CellInfo dragCellInfo = mDragInfo; 1986 spanX = dragCellInfo.spanX; 1987 spanY = dragCellInfo.spanY; 1988 ignoreView = dragCellInfo.cell; 1989 } else { 1990 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 1991 spanX = dragInfo.spanX; 1992 spanY = dragInfo.spanY; 1993 } 1994 1995 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 1996 (int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell); 1997 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, true)) { 1998 return true; 1999 } 2000 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, 2001 mTargetCell)) { 2002 return true; 2003 } 2004 2005 // Don't accept the drop if there's no room for the item 2006 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 2007 // Don't show the message if we are dropping on the AllApps button and the hotseat 2008 // is full 2009 if (mTargetCell != null && mLauncher.isHotseatLayout(mDragTargetLayout)) { 2010 Hotseat hotseat = mLauncher.getHotseat(); 2011 if (Hotseat.isAllAppsButtonRank( 2012 hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { 2013 return false; 2014 } 2015 } 2016 2017 mLauncher.showOutOfSpaceMessage(); 2018 return false; 2019 } 2020 } 2021 return true; 2022 } 2023 2024 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, 2025 boolean considerTimeout) { 2026 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2027 2028 boolean hasntMoved = false; 2029 if (mDragInfo != null) { 2030 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2031 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2032 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2033 } 2034 2035 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2036 return false; 2037 } 2038 2039 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2040 boolean willBecomeShortcut = 2041 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2042 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2043 2044 return (aboveShortcut && willBecomeShortcut); 2045 } 2046 2047 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell) { 2048 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2049 if (dropOverView instanceof FolderIcon) { 2050 FolderIcon fi = (FolderIcon) dropOverView; 2051 if (fi.acceptDrop(dragInfo)) { 2052 return true; 2053 } 2054 } 2055 return false; 2056 } 2057 2058 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2059 int[] targetCell, boolean external, DragView dragView, Runnable postAnimationRunnable) { 2060 View v = target.getChildAt(targetCell[0], targetCell[1]); 2061 boolean hasntMoved = false; 2062 if (mDragInfo != null) { 2063 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2064 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2065 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2066 } 2067 2068 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2069 mCreateUserFolderOnDrop = false; 2070 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 2071 2072 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2073 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2074 2075 if (aboveShortcut && willBecomeShortcut) { 2076 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2077 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2078 // if the drag started here, we need to remove it from the workspace 2079 if (!external) { 2080 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2081 } 2082 2083 Rect folderLocation = new Rect(); 2084 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2085 target.removeView(v); 2086 2087 FolderIcon fi = 2088 mLauncher.addFolder(target, container, screen, targetCell[0], targetCell[1]); 2089 destInfo.cellX = -1; 2090 destInfo.cellY = -1; 2091 sourceInfo.cellX = -1; 2092 sourceInfo.cellY = -1; 2093 2094 // If the dragView is null, we can't animate 2095 boolean animate = dragView != null; 2096 if (animate) { 2097 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2098 postAnimationRunnable); 2099 } else { 2100 fi.addItem(destInfo); 2101 fi.addItem(sourceInfo); 2102 } 2103 return true; 2104 } 2105 return false; 2106 } 2107 2108 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2109 DragObject d, boolean external) { 2110 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2111 if (dropOverView instanceof FolderIcon) { 2112 FolderIcon fi = (FolderIcon) dropOverView; 2113 if (fi.acceptDrop(d.dragInfo)) { 2114 fi.onDrop(d); 2115 2116 // if the drag started here, we need to remove it from the workspace 2117 if (!external) { 2118 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2119 } 2120 return true; 2121 } 2122 } 2123 return false; 2124 } 2125 2126 public void onDrop(DragObject d) { 2127 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2128 mDragViewVisualCenter); 2129 2130 // We want the point to be mapped to the dragTarget. 2131 if (mDragTargetLayout != null) { 2132 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2133 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2134 } else { 2135 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2136 } 2137 } 2138 2139 CellLayout dropTargetLayout = mDragTargetLayout; 2140 2141 int snapScreen = -1; 2142 if (d.dragSource != this) { 2143 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2144 (int) mDragViewVisualCenter[1] }; 2145 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2146 } else if (mDragInfo != null) { 2147 final View cell = mDragInfo.cell; 2148 2149 if (dropTargetLayout != null) { 2150 // Move internally 2151 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2152 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2153 long container = hasMovedIntoHotseat ? 2154 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2155 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2156 int screen = (mTargetCell[0] < 0) ? 2157 mDragInfo.screen : indexOfChild(dropTargetLayout); 2158 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2159 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2160 // First we find the cell nearest to point at which the item is 2161 // dropped, without any consideration to whether there is an item there. 2162 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2163 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2164 // If the item being dropped is a shortcut and the nearest drop 2165 // cell also contains a shortcut, then create a folder with the two shortcuts. 2166 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2167 dropTargetLayout, mTargetCell, false, d.dragView, null)) { 2168 return; 2169 } 2170 2171 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, d, false)) { 2172 return; 2173 } 2174 2175 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2176 // we need to find the nearest cell location that is vacant 2177 mTargetCell = findNearestVacantArea((int) mDragViewVisualCenter[0], 2178 (int) mDragViewVisualCenter[1], mDragInfo.spanX, mDragInfo.spanY, cell, 2179 dropTargetLayout, mTargetCell); 2180 2181 if (mCurrentPage != screen && !hasMovedIntoHotseat) { 2182 snapScreen = screen; 2183 snapToPage(screen); 2184 } 2185 2186 if (mTargetCell[0] >= 0 && mTargetCell[1] >= 0) { 2187 if (hasMovedLayouts) { 2188 // Reparent the view 2189 getParentCellLayoutForView(cell).removeView(cell); 2190 addInScreen(cell, container, screen, mTargetCell[0], mTargetCell[1], 2191 mDragInfo.spanX, mDragInfo.spanY); 2192 } 2193 2194 // update the item's position after drop 2195 final ItemInfo info = (ItemInfo) cell.getTag(); 2196 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2197 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 2198 lp.cellX = mTargetCell[0]; 2199 lp.cellY = mTargetCell[1]; 2200 cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screen, 2201 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2202 2203 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2204 cell instanceof LauncherAppWidgetHostView) { 2205 final CellLayout cellLayout = dropTargetLayout; 2206 // We post this call so that the widget has a chance to be placed 2207 // in its final location 2208 2209 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2210 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2211 if (pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2212 final Runnable resizeRunnable = new Runnable() { 2213 public void run() { 2214 DragLayer dragLayer = mLauncher.getDragLayer(); 2215 dragLayer.addResizeFrame(info, hostView, cellLayout); 2216 } 2217 }; 2218 post(new Runnable() { 2219 public void run() { 2220 if (!isPageMoving()) { 2221 resizeRunnable.run(); 2222 } else { 2223 mDelayedResizeRunnable = resizeRunnable; 2224 } 2225 } 2226 }); 2227 } 2228 } 2229 2230 LauncherModel.moveItemInDatabase(mLauncher, info, container, screen, lp.cellX, 2231 lp.cellY); 2232 } 2233 } 2234 2235 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2236 2237 // Prepare it to be animated into its new position 2238 // This must be called after the view has been re-parented 2239 final Runnable disableHardwareLayersRunnable = new Runnable() { 2240 @Override 2241 public void run() { 2242 mAnimatingViewIntoPlace = false; 2243 updateChildrenLayersEnabled(); 2244 } 2245 }; 2246 mAnimatingViewIntoPlace = true; 2247 if (d.dragView.hasDrawn()) { 2248 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2249 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2250 disableHardwareLayersRunnable, this); 2251 } else { 2252 cell.setVisibility(VISIBLE); 2253 } 2254 parent.onDropChild(cell); 2255 } 2256 } 2257 2258 public void setFinalScrollForPageChange(int screen) { 2259 if (screen >= 0) { 2260 mSavedScrollX = getScrollX(); 2261 CellLayout cl = (CellLayout) getChildAt(screen); 2262 mSavedTranslationX = cl.getTranslationX(); 2263 mSavedRotationY = cl.getRotationY(); 2264 final int newX = getChildOffset(screen) - getRelativeChildOffset(screen); 2265 setScrollX(newX); 2266 cl.setTranslationX(0f); 2267 cl.setRotationY(0f); 2268 } 2269 } 2270 2271 public void resetFinalScrollForPageChange(int screen) { 2272 if (screen >= 0) { 2273 CellLayout cl = (CellLayout) getChildAt(screen); 2274 setScrollX(mSavedScrollX); 2275 cl.setTranslationX(mSavedTranslationX); 2276 cl.setRotationY(mSavedRotationY); 2277 } 2278 } 2279 2280 public void getViewLocationRelativeToSelf(View v, int[] location) { 2281 getLocationInWindow(location); 2282 int x = location[0]; 2283 int y = location[1]; 2284 2285 v.getLocationInWindow(location); 2286 int vX = location[0]; 2287 int vY = location[1]; 2288 2289 location[0] = vX - x; 2290 location[1] = vY - y; 2291 } 2292 2293 public void onDragEnter(DragObject d) { 2294 mDragHasEnteredWorkspace = true; 2295 if (mDragTargetLayout != null) { 2296 mDragTargetLayout.setIsDragOverlapping(false); 2297 mDragTargetLayout.onDragExit(); 2298 } 2299 mDragTargetLayout = getCurrentDropLayout(); 2300 mDragTargetLayout.setIsDragOverlapping(true); 2301 mDragTargetLayout.onDragEnter(); 2302 2303 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2304 // don't need to show the outlines 2305 if (LauncherApplication.isScreenLarge()) { 2306 showOutlines(); 2307 } 2308 } 2309 2310 private void doDragExit(DragObject d) { 2311 // Clean up folders 2312 cleanupFolderCreation(d); 2313 2314 // Reset the scroll area and previous drag target 2315 onResetScrollArea(); 2316 2317 if (mDragTargetLayout != null) { 2318 mDragTargetLayout.setIsDragOverlapping(false); 2319 mDragTargetLayout.onDragExit(); 2320 } 2321 mLastDragOverView = null; 2322 mSpringLoadedDragController.cancel(); 2323 2324 if (!mIsPageMoving) { 2325 hideOutlines(); 2326 } 2327 } 2328 2329 public void onDragExit(DragObject d) { 2330 mDragHasEnteredWorkspace = false; 2331 doDragExit(d); 2332 } 2333 2334 public DropTarget getDropTargetDelegate(DragObject d) { 2335 return null; 2336 } 2337 2338 /** 2339 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 2340 * in the returned structure related to the widgets that match the drop (or a null list if it is 2341 * a shortcut drop). If the drop is not accepted then a null structure is returned. 2342 */ 2343 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 2344 final LauncherModel model = mLauncher.getModel(); 2345 final ClipDescription desc = event.getClipDescription(); 2346 final int mimeTypeCount = desc.getMimeTypeCount(); 2347 for (int i = 0; i < mimeTypeCount; ++i) { 2348 final String mimeType = desc.getMimeType(i); 2349 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 2350 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 2351 } else { 2352 final List<WidgetMimeTypeHandlerData> widgets = 2353 model.resolveWidgetsForMimeType(mContext, mimeType); 2354 if (widgets.size() > 0) { 2355 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 2356 } 2357 } 2358 } 2359 return null; 2360 } 2361 2362 /** 2363 * Global drag and drop handler 2364 */ 2365 @Override 2366 public boolean onDragEvent(DragEvent event) { 2367 final ClipDescription desc = event.getClipDescription(); 2368 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 2369 final int[] pos = new int[2]; 2370 layout.getLocationOnScreen(pos); 2371 // We need to offset the drag coordinates to layout coordinate space 2372 final int x = (int) event.getX() - pos[0]; 2373 final int y = (int) event.getY() - pos[1]; 2374 2375 switch (event.getAction()) { 2376 case DragEvent.ACTION_DRAG_STARTED: { 2377 // Validate this drag 2378 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2379 if (test != null) { 2380 boolean isShortcut = (test.second == null); 2381 if (isShortcut) { 2382 // Check if we have enough space on this screen to add a new shortcut 2383 if (!layout.findCellForSpan(pos, 1, 1)) { 2384 mLauncher.showOutOfSpaceMessage(); 2385 return false; 2386 } 2387 } 2388 } else { 2389 // Show error message if we couldn't accept any of the items 2390 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 2391 Toast.LENGTH_SHORT).show(); 2392 return false; 2393 } 2394 2395 // Create the drag outline 2396 // We need to add extra padding to the bitmap to make room for the glow effect 2397 final Canvas canvas = new Canvas(); 2398 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2399 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 2400 2401 // Show the current page outlines to indicate that we can accept this drop 2402 showOutlines(); 2403 layout.onDragEnter(); 2404 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1, null, null); 2405 2406 return true; 2407 } 2408 case DragEvent.ACTION_DRAG_LOCATION: 2409 // Visualize the drop location 2410 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1, null, null); 2411 return true; 2412 case DragEvent.ACTION_DROP: { 2413 // Try and add any shortcuts 2414 final LauncherModel model = mLauncher.getModel(); 2415 final ClipData data = event.getClipData(); 2416 2417 // We assume that the mime types are ordered in descending importance of 2418 // representation. So we enumerate the list of mime types and alert the 2419 // user if any widgets can handle the drop. Only the most preferred 2420 // representation will be handled. 2421 pos[0] = x; 2422 pos[1] = y; 2423 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2424 if (test != null) { 2425 final int index = test.first; 2426 final List<WidgetMimeTypeHandlerData> widgets = test.second; 2427 final boolean isShortcut = (widgets == null); 2428 final String mimeType = desc.getMimeType(index); 2429 if (isShortcut) { 2430 final Intent intent = data.getItemAt(index).getIntent(); 2431 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 2432 if (info != null) { 2433 onDropExternal(new int[] { x, y }, info, layout, false); 2434 } 2435 } else { 2436 if (widgets.size() == 1) { 2437 // If there is only one item, then go ahead and add and configure 2438 // that widget 2439 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 2440 final PendingAddWidgetInfo createInfo = 2441 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 2442 mLauncher.addAppWidgetFromDrop(createInfo, 2443 LauncherSettings.Favorites.CONTAINER_DESKTOP, mCurrentPage, null, pos); 2444 } else { 2445 // Show the widget picker dialog if there is more than one widget 2446 // that can handle this data type 2447 final InstallWidgetReceiver.WidgetListAdapter adapter = 2448 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 2449 data, widgets, layout, mCurrentPage, pos); 2450 final AlertDialog.Builder builder = 2451 new AlertDialog.Builder(mContext); 2452 builder.setAdapter(adapter, adapter); 2453 builder.setCancelable(true); 2454 builder.setTitle(mContext.getString( 2455 R.string.external_drop_widget_pick_title)); 2456 builder.setIcon(R.drawable.ic_no_applications); 2457 builder.show(); 2458 } 2459 } 2460 } 2461 return true; 2462 } 2463 case DragEvent.ACTION_DRAG_ENDED: 2464 // Hide the page outlines after the drop 2465 layout.onDragExit(); 2466 hideOutlines(); 2467 return true; 2468 } 2469 return super.onDragEvent(event); 2470 } 2471 2472 /* 2473 * 2474 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2475 * coordinate space. The argument xy is modified with the return result. 2476 * 2477 */ 2478 void mapPointFromSelfToChild(View v, float[] xy) { 2479 mapPointFromSelfToChild(v, xy, null); 2480 } 2481 2482 /* 2483 * 2484 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2485 * coordinate space. The argument xy is modified with the return result. 2486 * 2487 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2488 * computing it itself; we use this to avoid redundant matrix inversions in 2489 * findMatchingPageForDragOver 2490 * 2491 */ 2492 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2493 if (cachedInverseMatrix == null) { 2494 v.getMatrix().invert(mTempInverseMatrix); 2495 cachedInverseMatrix = mTempInverseMatrix; 2496 } 2497 int scrollX = mScrollX; 2498 if (mNextPage != INVALID_PAGE) { 2499 scrollX = mScroller.getFinalX(); 2500 } 2501 xy[0] = xy[0] + scrollX - v.getLeft(); 2502 xy[1] = xy[1] + mScrollY - v.getTop(); 2503 cachedInverseMatrix.mapPoints(xy); 2504 } 2505 2506 /* 2507 * Maps a point from the Workspace's coordinate system to another sibling view's. (Workspace 2508 * covers the full screen) 2509 */ 2510 void mapPointFromSelfToSibling(View v, float[] xy) { 2511 xy[0] = xy[0] - v.getLeft(); 2512 xy[1] = xy[1] - v.getTop(); 2513 } 2514 2515 /* 2516 * 2517 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2518 * the parent View's coordinate space. The argument xy is modified with the return result. 2519 * 2520 */ 2521 void mapPointFromChildToSelf(View v, float[] xy) { 2522 v.getMatrix().mapPoints(xy); 2523 int scrollX = mScrollX; 2524 if (mNextPage != INVALID_PAGE) { 2525 scrollX = mScroller.getFinalX(); 2526 } 2527 xy[0] -= (scrollX - v.getLeft()); 2528 xy[1] -= (mScrollY - v.getTop()); 2529 } 2530 2531 static private float squaredDistance(float[] point1, float[] point2) { 2532 float distanceX = point1[0] - point2[0]; 2533 float distanceY = point2[1] - point2[1]; 2534 return distanceX * distanceX + distanceY * distanceY; 2535 } 2536 2537 /* 2538 * 2539 * Returns true if the passed CellLayout cl overlaps with dragView 2540 * 2541 */ 2542 boolean overlaps(CellLayout cl, DragView dragView, 2543 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2544 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2545 final float[] draggedItemTopLeft = mTempDragCoordinates; 2546 draggedItemTopLeft[0] = dragViewX; 2547 draggedItemTopLeft[1] = dragViewY; 2548 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2549 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2550 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2551 2552 // Transform the dragged item's top left coordinates 2553 // to the CellLayout's local coordinates 2554 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2555 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2556 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2557 2558 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2559 // Transform the dragged item's bottom right coordinates 2560 // to the CellLayout's local coordinates 2561 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2562 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2563 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2564 2565 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2566 float overlap = (overlapRegionRight - overlapRegionLeft) * 2567 (overlapRegionBottom - overlapRegionTop); 2568 if (overlap > 0) { 2569 return true; 2570 } 2571 } 2572 } 2573 return false; 2574 } 2575 2576 /* 2577 * 2578 * This method returns the CellLayout that is currently being dragged to. In order to drag 2579 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2580 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2581 * 2582 * Return null if no CellLayout is currently being dragged over 2583 * 2584 */ 2585 private CellLayout findMatchingPageForDragOver( 2586 DragView dragView, float originX, float originY, boolean exact) { 2587 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2588 // with the item being dragged and then choose the one that's closest to the touch point 2589 final int screenCount = getChildCount(); 2590 CellLayout bestMatchingScreen = null; 2591 float smallestDistSoFar = Float.MAX_VALUE; 2592 2593 for (int i = 0; i < screenCount; i++) { 2594 CellLayout cl = (CellLayout) getChildAt(i); 2595 2596 final float[] touchXy = {originX, originY}; 2597 // Transform the touch coordinates to the CellLayout's local coordinates 2598 // If the touch point is within the bounds of the cell layout, we can return immediately 2599 cl.getMatrix().invert(mTempInverseMatrix); 2600 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2601 2602 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2603 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2604 return cl; 2605 } 2606 2607 if (!exact) { 2608 // Get the center of the cell layout in screen coordinates 2609 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2610 cellLayoutCenter[0] = cl.getWidth()/2; 2611 cellLayoutCenter[1] = cl.getHeight()/2; 2612 mapPointFromChildToSelf(cl, cellLayoutCenter); 2613 2614 touchXy[0] = originX; 2615 touchXy[1] = originY; 2616 2617 // Calculate the distance between the center of the CellLayout 2618 // and the touch point 2619 float dist = squaredDistance(touchXy, cellLayoutCenter); 2620 2621 if (dist < smallestDistSoFar) { 2622 smallestDistSoFar = dist; 2623 bestMatchingScreen = cl; 2624 } 2625 } 2626 } 2627 return bestMatchingScreen; 2628 } 2629 2630 // This is used to compute the visual center of the dragView. This point is then 2631 // used to visualize drop locations and determine where to drop an item. The idea is that 2632 // the visual center represents the user's interpretation of where the item is, and hence 2633 // is the appropriate point to use when determining drop location. 2634 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2635 DragView dragView, float[] recycle) { 2636 float res[]; 2637 if (recycle == null) { 2638 res = new float[2]; 2639 } else { 2640 res = recycle; 2641 } 2642 2643 // First off, the drag view has been shifted in a way that is not represented in the 2644 // x and y values or the x/yOffsets. Here we account for that shift. 2645 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2646 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2647 2648 // These represent the visual top and left of drag view if a dragRect was provided. 2649 // If a dragRect was not provided, then they correspond to the actual view left and 2650 // top, as the dragRect is in that case taken to be the entire dragView. 2651 // R.dimen.dragViewOffsetY. 2652 int left = x - xOffset; 2653 int top = y - yOffset; 2654 2655 // In order to find the visual center, we shift by half the dragRect 2656 res[0] = left + dragView.getDragRegion().width() / 2; 2657 res[1] = top + dragView.getDragRegion().height() / 2; 2658 2659 return res; 2660 } 2661 2662 private boolean isDragWidget(DragObject d) { 2663 return (d.dragInfo instanceof LauncherAppWidgetInfo || 2664 d.dragInfo instanceof PendingAddWidgetInfo); 2665 } 2666 private boolean isExternalDragWidget(DragObject d) { 2667 return d.dragSource != this && isDragWidget(d); 2668 } 2669 2670 public void onDragOver(DragObject d) { 2671 // Skip drag over events while we are dragging over side pages 2672 if (mInScrollArea) return; 2673 if (mIsSwitchingState) return; 2674 2675 Rect r = new Rect(); 2676 CellLayout layout = null; 2677 ItemInfo item = (ItemInfo) d.dragInfo; 2678 2679 // Ensure that we have proper spans for the item that we are dropping 2680 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2681 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2682 d.dragView, mDragViewVisualCenter); 2683 2684 // Identify whether we have dragged over a side page 2685 if (isSmall()) { 2686 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 2687 mLauncher.getHotseat().getHitRect(r); 2688 if (r.contains(d.x, d.y)) { 2689 layout = mLauncher.getHotseat().getLayout(); 2690 } 2691 } 2692 if (layout == null) { 2693 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false); 2694 } 2695 if (layout != mDragTargetLayout) { 2696 // Cancel all intermediate folder states 2697 cleanupFolderCreation(d); 2698 2699 if (mDragTargetLayout != null) { 2700 mDragTargetLayout.setIsDragOverlapping(false); 2701 mDragTargetLayout.onDragExit(); 2702 } 2703 mDragTargetLayout = layout; 2704 if (mDragTargetLayout != null) { 2705 mDragTargetLayout.setIsDragOverlapping(true); 2706 mDragTargetLayout.onDragEnter(); 2707 } else { 2708 mLastDragOverView = null; 2709 } 2710 2711 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 2712 if (isInSpringLoadedMode) { 2713 if (mLauncher.isHotseatLayout(layout)) { 2714 mSpringLoadedDragController.cancel(); 2715 } else { 2716 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2717 } 2718 } 2719 } 2720 } else { 2721 // Test to see if we are over the hotseat otherwise just use the current page 2722 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 2723 mLauncher.getHotseat().getHitRect(r); 2724 if (r.contains(d.x, d.y)) { 2725 layout = mLauncher.getHotseat().getLayout(); 2726 } 2727 } 2728 if (layout == null) { 2729 layout = getCurrentDropLayout(); 2730 } 2731 if (layout != mDragTargetLayout) { 2732 if (mDragTargetLayout != null) { 2733 mDragTargetLayout.setIsDragOverlapping(false); 2734 mDragTargetLayout.onDragExit(); 2735 } 2736 mDragTargetLayout = layout; 2737 mDragTargetLayout.setIsDragOverlapping(true); 2738 mDragTargetLayout.onDragEnter(); 2739 } 2740 } 2741 2742 // Handle the drag over 2743 if (mDragTargetLayout != null) { 2744 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2745 2746 // We want the point to be mapped to the dragTarget. 2747 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2748 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2749 } else { 2750 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2751 } 2752 ItemInfo info = (ItemInfo) d.dragInfo; 2753 2754 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2755 (int) mDragViewVisualCenter[1], 1, 1, mDragTargetLayout, mTargetCell); 2756 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2757 mTargetCell[1]); 2758 2759 boolean userFolderPending = willCreateUserFolder(info, mDragTargetLayout, 2760 mTargetCell, false); 2761 boolean isOverFolder = dragOverView instanceof FolderIcon; 2762 if (dragOverView != mLastDragOverView) { 2763 cancelFolderCreation(); 2764 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2765 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2766 } 2767 } 2768 2769 if (userFolderPending && dragOverView != mLastDragOverView) { 2770 mFolderCreationAlarm.setOnAlarmListener(new 2771 FolderCreationAlarmListener(mDragTargetLayout, mTargetCell[0], mTargetCell[1])); 2772 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2773 } 2774 2775 if (dragOverView != mLastDragOverView && isOverFolder) { 2776 ((FolderIcon) dragOverView).onDragEnter(d.dragInfo); 2777 if (mDragTargetLayout != null) { 2778 mDragTargetLayout.clearDragOutlines(); 2779 } 2780 } 2781 mLastDragOverView = dragOverView; 2782 2783 if (!mCreateUserFolderOnDrop && !isOverFolder) { 2784 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2785 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2786 item.spanX, item.spanY, d.dragView.getDragVisualizeOffset(), 2787 d.dragView.getDragRegion()); 2788 } 2789 } 2790 } 2791 2792 private void cleanupFolderCreation(DragObject d) { 2793 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2794 mDragFolderRingAnimator.animateToNaturalState(); 2795 } 2796 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2797 if (d != null) { 2798 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2799 } 2800 } 2801 mFolderCreationAlarm.cancelAlarm(); 2802 } 2803 2804 private void cancelFolderCreation() { 2805 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2806 mDragFolderRingAnimator.animateToNaturalState(); 2807 } 2808 mCreateUserFolderOnDrop = false; 2809 mFolderCreationAlarm.cancelAlarm(); 2810 } 2811 2812 class FolderCreationAlarmListener implements OnAlarmListener { 2813 CellLayout layout; 2814 int cellX; 2815 int cellY; 2816 2817 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 2818 this.layout = layout; 2819 this.cellX = cellX; 2820 this.cellY = cellY; 2821 } 2822 2823 public void onAlarm(Alarm alarm) { 2824 if (mDragFolderRingAnimator == null) { 2825 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 2826 } 2827 mDragFolderRingAnimator.setCell(cellX, cellY); 2828 mDragFolderRingAnimator.setCellLayout(layout); 2829 mDragFolderRingAnimator.animateToAcceptState(); 2830 layout.showFolderAccept(mDragFolderRingAnimator); 2831 layout.clearDragOutlines(); 2832 mCreateUserFolderOnDrop = true; 2833 } 2834 } 2835 2836 @Override 2837 public void getHitRect(Rect outRect) { 2838 // We want the workspace to have the whole area of the display (it will find the correct 2839 // cell layout to drop to in the existing drag/drop logic. 2840 outRect.set(0, 0, mDisplayWidth, mDisplayHeight); 2841 } 2842 2843 /** 2844 * Add the item specified by dragInfo to the given layout. 2845 * @return true if successful 2846 */ 2847 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2848 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2849 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2850 return true; 2851 } 2852 mLauncher.showOutOfSpaceMessage(); 2853 return false; 2854 } 2855 2856 private void onDropExternal(int[] touchXY, Object dragInfo, 2857 CellLayout cellLayout, boolean insertAtFirst) { 2858 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 2859 } 2860 2861 /** 2862 * Drop an item that didn't originate on one of the workspace screens. 2863 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2864 * come from another app altogether. 2865 * 2866 * NOTE: This can also be called when we are outside of a drag event, when we want 2867 * to add an item to one of the workspace screens. 2868 */ 2869 private void onDropExternal(final int[] touchXY, final Object dragInfo, 2870 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 2871 final Runnable exitSpringLoadedRunnable = new Runnable() { 2872 @Override 2873 public void run() { 2874 mLauncher.exitSpringLoadedDragModeDelayed(true, false); 2875 } 2876 }; 2877 2878 ItemInfo info = (ItemInfo) dragInfo; 2879 int spanX = info.spanX; 2880 int spanY = info.spanY; 2881 if (mDragInfo != null) { 2882 spanX = mDragInfo.spanX; 2883 spanY = mDragInfo.spanY; 2884 } 2885 2886 final long container = mLauncher.isHotseatLayout(cellLayout) ? 2887 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2888 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2889 final int screen = indexOfChild(cellLayout); 2890 if (!mLauncher.isHotseatLayout(cellLayout) && screen != mCurrentPage 2891 && mState != State.SPRING_LOADED) { 2892 snapToPage(screen); 2893 } 2894 2895 if (info instanceof PendingAddItemInfo) { 2896 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 2897 2898 boolean findNearestVacantCell = true; 2899 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 2900 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 2901 cellLayout, mTargetCell); 2902 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, 2903 true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 2904 mDragTargetLayout, mTargetCell)) { 2905 findNearestVacantCell = false; 2906 } 2907 } 2908 if (findNearestVacantCell) { 2909 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], spanX, spanY, null, 2910 cellLayout, mTargetCell); 2911 } 2912 2913 Runnable onAnimationCompleteRunnable = new Runnable() { 2914 @Override 2915 public void run() { 2916 // When dragging and dropping from customization tray, we deal with creating 2917 // widgets/shortcuts/folders in a slightly different way 2918 switch (pendingInfo.itemType) { 2919 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 2920 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, 2921 container, screen, mTargetCell, null); 2922 break; 2923 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2924 mLauncher.processShortcutFromDrop(pendingInfo.componentName, 2925 container, screen, mTargetCell, null); 2926 break; 2927 default: 2928 throw new IllegalStateException("Unknown item type: " + 2929 pendingInfo.itemType); 2930 } 2931 cellLayout.onDragExit(); 2932 } 2933 }; 2934 2935 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 2936 // location and size on the home screen. 2937 RectF r = estimateItemPosition(cellLayout, pendingInfo, 2938 mTargetCell[0], mTargetCell[1], spanX, spanY); 2939 int loc[] = new int[2]; 2940 loc[0] = (int) r.left; 2941 loc[1] = (int) r.top; 2942 setFinalTransitionTransform(cellLayout); 2943 float cellLayoutScale = 2944 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(cellLayout, loc); 2945 resetTransitionTransform(cellLayout); 2946 2947 float dragViewScale = Math.min(r.width() / d.dragView.getMeasuredWidth(), 2948 r.height() / d.dragView.getMeasuredHeight()); 2949 // The animation will scale the dragView about its center, so we need to center about 2950 // the final location. 2951 loc[0] -= (d.dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 2952 loc[1] -= (d.dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 2953 2954 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, loc, 2955 dragViewScale * cellLayoutScale, onAnimationCompleteRunnable); 2956 } else { 2957 // This is for other drag/drop cases, like dragging from All Apps 2958 View view = null; 2959 2960 switch (info.itemType) { 2961 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 2962 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2963 if (info.container == NO_ID && info instanceof ApplicationInfo) { 2964 // Came from all apps -- make a copy 2965 info = new ShortcutInfo((ApplicationInfo) info); 2966 } 2967 view = mLauncher.createShortcut(R.layout.application, cellLayout, 2968 (ShortcutInfo) info); 2969 break; 2970 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 2971 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 2972 (FolderInfo) info, mIconCache); 2973 break; 2974 default: 2975 throw new IllegalStateException("Unknown item type: " + info.itemType); 2976 } 2977 2978 // First we find the cell nearest to point at which the item is 2979 // dropped, without any consideration to whether there is an item there. 2980 if (touchXY != null) { 2981 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 2982 cellLayout, mTargetCell); 2983 d.postAnimationRunnable = exitSpringLoadedRunnable; 2984 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, true, 2985 d.dragView, d.postAnimationRunnable)) { 2986 return; 2987 } 2988 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, d, true)) { 2989 return; 2990 } 2991 } 2992 2993 if (touchXY != null) { 2994 // when dragging and dropping, just find the closest free spot 2995 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], 1, 1, null, 2996 cellLayout, mTargetCell); 2997 } else { 2998 cellLayout.findCellForSpan(mTargetCell, 1, 1); 2999 } 3000 addInScreen(view, container, screen, mTargetCell[0], mTargetCell[1], info.spanX, 3001 info.spanY, insertAtFirst); 3002 cellLayout.onDropChild(view); 3003 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 3004 cellLayout.getChildrenLayout().measureChild(view); 3005 3006 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, 3007 lp.cellX, lp.cellY); 3008 3009 if (d.dragView != null) { 3010 // We wrap the animation call in the temporary set and reset of the current 3011 // cellLayout to its final transform -- this means we animate the drag view to 3012 // the correct final location. 3013 setFinalTransitionTransform(cellLayout); 3014 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 3015 exitSpringLoadedRunnable); 3016 resetTransitionTransform(cellLayout); 3017 } 3018 } 3019 } 3020 3021 public void setFinalTransitionTransform(CellLayout layout) { 3022 if (isSwitchingState()) { 3023 int index = indexOfChild(layout); 3024 mCurrentScaleX = layout.getScaleX(); 3025 mCurrentScaleY = layout.getScaleY(); 3026 mCurrentTranslationX = layout.getTranslationX(); 3027 mCurrentTranslationY = layout.getTranslationY(); 3028 mCurrentRotationY = layout.getRotationY(); 3029 layout.setScaleX(mNewScaleXs[index]); 3030 layout.setScaleY(mNewScaleYs[index]); 3031 layout.setTranslationX(mNewTranslationXs[index]); 3032 layout.setTranslationY(mNewTranslationYs[index]); 3033 layout.setRotationY(mNewRotationYs[index]); 3034 } 3035 } 3036 public void resetTransitionTransform(CellLayout layout) { 3037 if (isSwitchingState()) { 3038 mCurrentScaleX = layout.getScaleX(); 3039 mCurrentScaleY = layout.getScaleY(); 3040 mCurrentTranslationX = layout.getTranslationX(); 3041 mCurrentTranslationY = layout.getTranslationY(); 3042 mCurrentRotationY = layout.getRotationY(); 3043 layout.setScaleX(mCurrentScaleX); 3044 layout.setScaleY(mCurrentScaleY); 3045 layout.setTranslationX(mCurrentTranslationX); 3046 layout.setTranslationY(mCurrentTranslationY); 3047 layout.setRotationY(mCurrentRotationY); 3048 } 3049 } 3050 3051 /** 3052 * Return the current {@link CellLayout}, correctly picking the destination 3053 * screen while a scroll is in progress. 3054 */ 3055 public CellLayout getCurrentDropLayout() { 3056 return (CellLayout) getChildAt(mNextPage == INVALID_PAGE ? mCurrentPage : mNextPage); 3057 } 3058 3059 /** 3060 * Return the current CellInfo describing our current drag; this method exists 3061 * so that Launcher can sync this object with the correct info when the activity is created/ 3062 * destroyed 3063 * 3064 */ 3065 public CellLayout.CellInfo getDragInfo() { 3066 return mDragInfo; 3067 } 3068 3069 /** 3070 * Calculate the nearest cell where the given object would be dropped. 3071 * 3072 * pixelX and pixelY should be in the coordinate system of layout 3073 */ 3074 private int[] findNearestVacantArea(int pixelX, int pixelY, 3075 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 3076 return layout.findNearestVacantArea( 3077 pixelX, pixelY, spanX, spanY, ignoreView, recycle); 3078 } 3079 3080 /** 3081 * Calculate the nearest cell where the given object would be dropped. 3082 * 3083 * pixelX and pixelY should be in the coordinate system of layout 3084 */ 3085 private int[] findNearestArea(int pixelX, int pixelY, 3086 int spanX, int spanY, CellLayout layout, int[] recycle) { 3087 return layout.findNearestArea( 3088 pixelX, pixelY, spanX, spanY, recycle); 3089 } 3090 3091 void setup(DragController dragController) { 3092 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3093 mDragController = dragController; 3094 3095 // hardware layers on children are enabled on startup, but should be disabled until 3096 // needed 3097 updateChildrenLayersEnabled(); 3098 setWallpaperDimension(); 3099 } 3100 3101 /** 3102 * Called at the end of a drag which originated on the workspace. 3103 */ 3104 public void onDropCompleted(View target, DragObject d, boolean success) { 3105 if (success) { 3106 if (target != this) { 3107 if (mDragInfo != null) { 3108 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 3109 if (mDragInfo.cell instanceof DropTarget) { 3110 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 3111 } 3112 } 3113 } 3114 } else if (mDragInfo != null) { 3115 // NOTE: When 'success' is true, onDragExit is called by the DragController before 3116 // calling onDropCompleted(). We call it ourselves here, but maybe this should be 3117 // moved into DragController.cancelDrag(). 3118 doDragExit(null); 3119 CellLayout cellLayout; 3120 if (mLauncher.isHotseatLayout(target)) { 3121 cellLayout = mLauncher.getHotseat().getLayout(); 3122 } else { 3123 cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3124 } 3125 cellLayout.onDropChild(mDragInfo.cell); 3126 } 3127 if (d.cancelled && mDragInfo.cell != null) { 3128 mDragInfo.cell.setVisibility(VISIBLE); 3129 } 3130 mDragOutline = null; 3131 mDragInfo = null; 3132 3133 // Hide the scrolling indicator after you pick up an item 3134 hideScrollingIndicator(false); 3135 } 3136 3137 public boolean isDropEnabled() { 3138 return true; 3139 } 3140 3141 @Override 3142 protected void onRestoreInstanceState(Parcelable state) { 3143 super.onRestoreInstanceState(state); 3144 Launcher.setScreen(mCurrentPage); 3145 } 3146 3147 @Override 3148 public void scrollLeft() { 3149 if (!isSmall() && !mIsSwitchingState) { 3150 super.scrollLeft(); 3151 } 3152 Folder openFolder = getOpenFolder(); 3153 if (openFolder != null) { 3154 openFolder.completeDragExit(); 3155 } 3156 } 3157 3158 @Override 3159 public void scrollRight() { 3160 if (!isSmall() && !mIsSwitchingState) { 3161 super.scrollRight(); 3162 } 3163 Folder openFolder = getOpenFolder(); 3164 if (openFolder != null) { 3165 openFolder.completeDragExit(); 3166 } 3167 } 3168 3169 @Override 3170 public boolean onEnterScrollArea(int x, int y, int direction) { 3171 // Ignore the scroll area if we are dragging over the hot seat 3172 if (mLauncher.getHotseat() != null) { 3173 Rect r = new Rect(); 3174 mLauncher.getHotseat().getHitRect(r); 3175 if (r.contains(x, y)) { 3176 return false; 3177 } 3178 } 3179 3180 boolean result = false; 3181 if (!isSmall() && !mIsSwitchingState) { 3182 mInScrollArea = true; 3183 3184 final int page = (mNextPage != INVALID_PAGE ? mNextPage : mCurrentPage) + 3185 (direction == DragController.SCROLL_LEFT ? -1 : 1); 3186 cancelFolderCreation(); 3187 3188 if (0 <= page && page < getChildCount()) { 3189 CellLayout layout = (CellLayout) getChildAt(page); 3190 // Exit the current layout and mark the overlapping layout 3191 if (mDragTargetLayout != null) { 3192 mDragTargetLayout.setIsDragOverlapping(false); 3193 mDragTargetLayout.onDragExit(); 3194 } 3195 mDragTargetLayout = layout; 3196 mDragTargetLayout.setIsDragOverlapping(true); 3197 3198 // Workspace is responsible for drawing the edge glow on adjacent pages, 3199 // so we need to redraw the workspace when this may have changed. 3200 invalidate(); 3201 result = true; 3202 } 3203 } 3204 return result; 3205 } 3206 3207 @Override 3208 public boolean onExitScrollArea() { 3209 boolean result = false; 3210 if (mInScrollArea) { 3211 if (mDragTargetLayout != null) { 3212 mDragTargetLayout.setIsDragOverlapping(false); 3213 // Workspace is responsible for drawing the edge glow on adjacent pages, 3214 // so we need to redraw the workspace when this may have changed. 3215 invalidate(); 3216 } 3217 if (mDragTargetLayout != null && mDragHasEnteredWorkspace) { 3218 // Unmark the overlapping layout and re-enter the current layout 3219 mDragTargetLayout = getCurrentDropLayout(); 3220 mDragTargetLayout.onDragEnter(); 3221 } 3222 result = true; 3223 mInScrollArea = false; 3224 } 3225 return result; 3226 } 3227 3228 private void onResetScrollArea() { 3229 if (mDragTargetLayout != null) { 3230 // Unmark the overlapping layout 3231 mDragTargetLayout.setIsDragOverlapping(false); 3232 3233 // Workspace is responsible for drawing the edge glow on adjacent pages, 3234 // so we need to redraw the workspace when this may have changed. 3235 invalidate(); 3236 } 3237 mInScrollArea = false; 3238 } 3239 3240 /** 3241 * Returns a specific CellLayout 3242 */ 3243 CellLayout getParentCellLayoutForView(View v) { 3244 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3245 for (CellLayout layout : layouts) { 3246 if (layout.getChildrenLayout().indexOfChild(v) > -1) { 3247 return layout; 3248 } 3249 } 3250 return null; 3251 } 3252 3253 /** 3254 * Returns a list of all the CellLayouts in the workspace. 3255 */ 3256 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3257 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3258 int screenCount = getChildCount(); 3259 for (int screen = 0; screen < screenCount; screen++) { 3260 layouts.add(((CellLayout) getChildAt(screen))); 3261 } 3262 if (mLauncher.getHotseat() != null) { 3263 layouts.add(mLauncher.getHotseat().getLayout()); 3264 } 3265 return layouts; 3266 } 3267 3268 /** 3269 * We should only use this to search for specific children. Do not use this method to modify 3270 * CellLayoutChildren directly. 3271 */ 3272 ArrayList<CellLayoutChildren> getWorkspaceAndHotseatCellLayoutChildren() { 3273 ArrayList<CellLayoutChildren> childrenLayouts = new ArrayList<CellLayoutChildren>(); 3274 int screenCount = getChildCount(); 3275 for (int screen = 0; screen < screenCount; screen++) { 3276 childrenLayouts.add(((CellLayout) getChildAt(screen)).getChildrenLayout()); 3277 } 3278 if (mLauncher.getHotseat() != null) { 3279 childrenLayouts.add(mLauncher.getHotseat().getLayout().getChildrenLayout()); 3280 } 3281 return childrenLayouts; 3282 } 3283 3284 public Folder getFolderForTag(Object tag) { 3285 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3286 for (CellLayoutChildren layout: childrenLayouts) { 3287 int count = layout.getChildCount(); 3288 for (int i = 0; i < count; i++) { 3289 View child = layout.getChildAt(i); 3290 if (child instanceof Folder) { 3291 Folder f = (Folder) child; 3292 if (f.getInfo() == tag && f.getInfo().opened) { 3293 return f; 3294 } 3295 } 3296 } 3297 } 3298 return null; 3299 } 3300 3301 public View getViewForTag(Object tag) { 3302 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3303 for (CellLayoutChildren layout: childrenLayouts) { 3304 int count = layout.getChildCount(); 3305 for (int i = 0; i < count; i++) { 3306 View child = layout.getChildAt(i); 3307 if (child.getTag() == tag) { 3308 return child; 3309 } 3310 } 3311 } 3312 return null; 3313 } 3314 3315 void clearDropTargets() { 3316 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3317 for (CellLayoutChildren layout: childrenLayouts) { 3318 int childCount = layout.getChildCount(); 3319 for (int j = 0; j < childCount; j++) { 3320 View v = layout.getChildAt(j); 3321 if (v instanceof DropTarget) { 3322 mDragController.removeDropTarget((DropTarget) v); 3323 } 3324 } 3325 } 3326 } 3327 3328 void removeItems(final ArrayList<ApplicationInfo> apps) { 3329 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3330 3331 final HashSet<String> packageNames = new HashSet<String>(); 3332 final int appCount = apps.size(); 3333 for (int i = 0; i < appCount; i++) { 3334 packageNames.add(apps.get(i).componentName.getPackageName()); 3335 } 3336 3337 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3338 for (final CellLayout layoutParent: cellLayouts) { 3339 final ViewGroup layout = layoutParent.getChildrenLayout(); 3340 3341 // Avoid ANRs by treating each screen separately 3342 post(new Runnable() { 3343 public void run() { 3344 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3345 childrenToRemove.clear(); 3346 3347 int childCount = layout.getChildCount(); 3348 for (int j = 0; j < childCount; j++) { 3349 final View view = layout.getChildAt(j); 3350 Object tag = view.getTag(); 3351 3352 if (tag instanceof ShortcutInfo) { 3353 final ShortcutInfo info = (ShortcutInfo) tag; 3354 final Intent intent = info.intent; 3355 final ComponentName name = intent.getComponent(); 3356 3357 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3358 for (String packageName: packageNames) { 3359 if (packageName.equals(name.getPackageName())) { 3360 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3361 childrenToRemove.add(view); 3362 } 3363 } 3364 } 3365 } else if (tag instanceof FolderInfo) { 3366 final FolderInfo info = (FolderInfo) tag; 3367 final ArrayList<ShortcutInfo> contents = info.contents; 3368 final int contentsCount = contents.size(); 3369 final ArrayList<ShortcutInfo> appsToRemoveFromFolder = 3370 new ArrayList<ShortcutInfo>(); 3371 3372 for (int k = 0; k < contentsCount; k++) { 3373 final ShortcutInfo appInfo = contents.get(k); 3374 final Intent intent = appInfo.intent; 3375 final ComponentName name = intent.getComponent(); 3376 3377 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3378 for (String packageName: packageNames) { 3379 if (packageName.equals(name.getPackageName())) { 3380 appsToRemoveFromFolder.add(appInfo); 3381 } 3382 } 3383 } 3384 } 3385 for (ShortcutInfo item: appsToRemoveFromFolder) { 3386 info.remove(item); 3387 LauncherModel.deleteItemFromDatabase(mLauncher, item); 3388 } 3389 } else if (tag instanceof LauncherAppWidgetInfo) { 3390 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3391 final AppWidgetProviderInfo provider = 3392 widgets.getAppWidgetInfo(info.appWidgetId); 3393 if (provider != null) { 3394 for (String packageName: packageNames) { 3395 if (packageName.equals(provider.provider.getPackageName())) { 3396 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3397 childrenToRemove.add(view); 3398 } 3399 } 3400 } 3401 } 3402 } 3403 3404 childCount = childrenToRemove.size(); 3405 for (int j = 0; j < childCount; j++) { 3406 View child = childrenToRemove.get(j); 3407 // Note: We can not remove the view directly from CellLayoutChildren as this 3408 // does not re-mark the spaces as unoccupied. 3409 layoutParent.removeViewInLayout(child); 3410 if (child instanceof DropTarget) { 3411 mDragController.removeDropTarget((DropTarget)child); 3412 } 3413 } 3414 3415 if (childCount > 0) { 3416 layout.requestLayout(); 3417 layout.invalidate(); 3418 } 3419 } 3420 }); 3421 } 3422 } 3423 3424 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3425 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3426 for (CellLayoutChildren layout: childrenLayouts) { 3427 int childCount = layout.getChildCount(); 3428 for (int j = 0; j < childCount; j++) { 3429 final View view = layout.getChildAt(j); 3430 Object tag = view.getTag(); 3431 if (tag instanceof ShortcutInfo) { 3432 ShortcutInfo info = (ShortcutInfo)tag; 3433 // We need to check for ACTION_MAIN otherwise getComponent() might 3434 // return null for some shortcuts (for instance, for shortcuts to 3435 // web pages.) 3436 final Intent intent = info.intent; 3437 final ComponentName name = intent.getComponent(); 3438 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3439 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3440 final int appCount = apps.size(); 3441 for (int k = 0; k < appCount; k++) { 3442 ApplicationInfo app = apps.get(k); 3443 if (app.componentName.equals(name)) { 3444 info.setIcon(mIconCache.getIcon(info.intent)); 3445 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 3446 new FastBitmapDrawable(info.getIcon(mIconCache)), 3447 null, null); 3448 } 3449 } 3450 } 3451 } 3452 } 3453 } 3454 } 3455 3456 void moveToDefaultScreen(boolean animate) { 3457 if (!isSmall()) { 3458 if (animate) { 3459 snapToPage(mDefaultPage); 3460 } else { 3461 setCurrentPage(mDefaultPage); 3462 } 3463 } 3464 getChildAt(mDefaultPage).requestFocus(); 3465 } 3466 3467 @Override 3468 public void syncPages() { 3469 } 3470 3471 @Override 3472 public void syncPageItems(int page, boolean immediate) { 3473 } 3474 3475 @Override 3476 protected String getCurrentPageDescription() { 3477 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 3478 return String.format(mContext.getString(R.string.workspace_scroll_format), 3479 page + 1, getChildCount()); 3480 } 3481 3482 public void getLocationInDragLayer(int[] loc) { 3483 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 3484 } 3485 3486 void setFadeForOverScroll(float fade) { 3487 if (!isScrollingIndicatorEnabled()) return; 3488 3489 mOverscrollFade = fade; 3490 float reducedFade = 0.5f + 0.5f * (1 - fade); 3491 final ViewGroup parent = (ViewGroup) getParent(); 3492 final ImageView qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3493 final ImageView dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3494 final View scrollIndicator = getScrollingIndicator(); 3495 3496 cancelScrollingIndicatorAnimations(); 3497 if (qsbDivider != null) qsbDivider.setAlpha(reducedFade); 3498 if (dockDivider != null) dockDivider.setAlpha(reducedFade); 3499 scrollIndicator.setAlpha(1 - fade); 3500 } 3501} 3502