Workspace.java revision 72d598400da7cef9c7fc4f99bb1fcd7ff0710011
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.launcher2; 18 19import android.animation.Animator; 20import android.animation.AnimatorSet; 21import android.animation.ObjectAnimator; 22import android.animation.TimeInterpolator; 23import android.animation.ValueAnimator; 24import android.animation.ValueAnimator.AnimatorUpdateListener; 25import android.app.AlertDialog; 26import android.app.WallpaperManager; 27import android.appwidget.AppWidgetHostView; 28import android.appwidget.AppWidgetManager; 29import android.appwidget.AppWidgetProviderInfo; 30import android.content.ClipData; 31import android.content.ClipDescription; 32import android.content.ComponentName; 33import android.content.Context; 34import android.content.Intent; 35import android.content.res.Resources; 36import android.content.res.TypedArray; 37import android.graphics.Bitmap; 38import android.graphics.Camera; 39import android.graphics.Canvas; 40import android.graphics.Matrix; 41import android.graphics.Paint; 42import android.graphics.Point; 43import android.graphics.PorterDuff; 44import android.graphics.Rect; 45import android.graphics.RectF; 46import android.graphics.Region.Op; 47import android.graphics.drawable.Drawable; 48import android.os.IBinder; 49import android.os.Parcelable; 50import android.util.AttributeSet; 51import android.util.DisplayMetrics; 52import android.util.Log; 53import android.util.Pair; 54import android.view.Display; 55import android.view.DragEvent; 56import android.view.MotionEvent; 57import android.view.View; 58import android.view.ViewConfiguration; 59import android.view.ViewGroup; 60import android.view.View.MeasureSpec; 61import android.view.animation.DecelerateInterpolator; 62import android.widget.ImageView; 63import android.widget.TextView; 64import android.widget.Toast; 65 66import com.android.launcher.R; 67import com.android.launcher2.FolderIcon.FolderRingAnimator; 68import com.android.launcher2.InstallWidgetReceiver.WidgetMimeTypeHandlerData; 69 70import java.util.ArrayList; 71import java.util.HashSet; 72import java.util.List; 73 74/** 75 * The workspace is a wide area with a wallpaper and a finite number of pages. 76 * Each page contains a number of icons, folders or widgets the user can 77 * interact with. A workspace is meant to be used with a fixed width only. 78 */ 79public class Workspace extends SmoothPagedView 80 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 81 DragController.DragListener, LauncherTransitionable { 82 @SuppressWarnings({"UnusedDeclaration"}) 83 private static final String TAG = "Launcher.Workspace"; 84 85 // Y rotation to apply to the workspace screens 86 private static final float WORKSPACE_ROTATION = 12.5f; 87 private static final float WORKSPACE_OVERSCROLL_ROTATION = 24f; 88 private static float CAMERA_DISTANCE = 6500; 89 90 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 91 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 92 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 93 94 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 95 private static final int ADJACENT_SCREEN_DROP_DURATION = 300; 96 private static final int FLING_THRESHOLD_VELOCITY = 500; 97 98 // These animators are used to fade the children's outlines 99 private ObjectAnimator mChildrenOutlineFadeInAnimation; 100 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 101 private float mChildrenOutlineAlpha = 0; 102 103 // These properties refer to the background protection gradient used for AllApps and Customize 104 private ValueAnimator mBackgroundFadeInAnimation; 105 private ValueAnimator mBackgroundFadeOutAnimation; 106 private Drawable mBackground; 107 boolean mDrawBackground = true; 108 private float mBackgroundAlpha = 0; 109 private float mOverScrollMaxBackgroundAlpha = 0.0f; 110 private int mOverScrollPageIndex = -1; 111 112 private float mWallpaperScrollRatio = 1.0f; 113 114 private final WallpaperManager mWallpaperManager; 115 private IBinder mWindowToken; 116 private static final float WALLPAPER_SCREENS_SPAN = 2f; 117 118 private int mDefaultPage; 119 120 /** 121 * CellInfo for the cell that is currently being dragged 122 */ 123 private CellLayout.CellInfo mDragInfo; 124 125 /** 126 * Target drop area calculated during last acceptDrop call. 127 */ 128 private int[] mTargetCell = new int[2]; 129 130 /** 131 * The CellLayout that is currently being dragged over 132 */ 133 private CellLayout mDragTargetLayout = null; 134 private boolean mDragHasEnteredWorkspace = false; 135 136 private Launcher mLauncher; 137 private IconCache mIconCache; 138 private DragController mDragController; 139 140 // These are temporary variables to prevent having to allocate a new object just to 141 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 142 private int[] mTempCell = new int[2]; 143 private int[] mTempEstimate = new int[2]; 144 private float[] mDragViewVisualCenter = new float[2]; 145 private float[] mTempDragCoordinates = new float[2]; 146 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 147 private float[] mTempDragBottomRightCoordinates = new float[2]; 148 private Matrix mTempInverseMatrix = new Matrix(); 149 150 private SpringLoadedDragController mSpringLoadedDragController; 151 private float mSpringLoadedShrinkFactor; 152 153 private static final int DEFAULT_CELL_COUNT_X = 4; 154 private static final int DEFAULT_CELL_COUNT_Y = 4; 155 156 // State variable that indicates whether the pages are small (ie when you're 157 // in all apps or customize mode) 158 159 enum State { NORMAL, SPRING_LOADED, SMALL }; 160 private State mState = State.NORMAL; 161 private boolean mIsSwitchingState = false; 162 163 boolean mAnimatingViewIntoPlace = false; 164 boolean mIsDragOccuring = false; 165 boolean mChildrenLayersEnabled = true; 166 167 /** Is the user is dragging an item near the edge of a page? */ 168 private boolean mInScrollArea = false; 169 170 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 171 private Bitmap mDragOutline = null; 172 private final Rect mTempRect = new Rect(); 173 private final int[] mTempXY = new int[2]; 174 private float mOverscrollFade = 0; 175 176 // Paint used to draw external drop outline 177 private final Paint mExternalDragOutlinePaint = new Paint(); 178 179 // Camera and Matrix used to determine the final position of a neighboring CellLayout 180 private final Matrix mMatrix = new Matrix(); 181 private final Camera mCamera = new Camera(); 182 private final float mTempFloat2[] = new float[2]; 183 184 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 185 int mWallpaperWidth; 186 int mWallpaperHeight; 187 WallpaperOffsetInterpolator mWallpaperOffset; 188 boolean mUpdateWallpaperOffsetImmediately = false; 189 private Runnable mDelayedResizeRunnable; 190 private int mDisplayWidth; 191 private int mDisplayHeight; 192 private int mWallpaperTravelWidth; 193 194 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 195 private static final int FOLDER_CREATION_TIMEOUT = 250; 196 private final Alarm mFolderCreationAlarm = new Alarm(); 197 private FolderRingAnimator mDragFolderRingAnimator = null; 198 private View mLastDragOverView = null; 199 private boolean mCreateUserFolderOnDrop = false; 200 201 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 202 private float mXDown; 203 private float mYDown; 204 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 205 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 206 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 207 208 // Relating to the animation of items being dropped externally 209 public static final int ANIMATE_INTO_POSITION = 0; 210 public static final int COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION = 1; 211 public static final int CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION = 2; 212 213 // Relating to workspace drag fade out 214 private float mDragFadeOutAlpha; 215 private int mDragFadeOutDuration; 216 217 // These variables are used for storing the initial and final values during workspace animations 218 private int mSavedScrollX; 219 private float mSavedRotationY; 220 private float mSavedTranslationX; 221 private float mCurrentScaleX; 222 private float mCurrentScaleY; 223 private float mCurrentRotationY; 224 private float mCurrentTranslationX; 225 private float mCurrentTranslationY; 226 private float[] mOldTranslationXs; 227 private float[] mOldTranslationYs; 228 private float[] mOldScaleXs; 229 private float[] mOldScaleYs; 230 private float[] mOldBackgroundAlphas; 231 private float[] mOldBackgroundAlphaMultipliers; 232 private float[] mOldAlphas; 233 private float[] mOldRotationYs; 234 private float[] mNewTranslationXs; 235 private float[] mNewTranslationYs; 236 private float[] mNewScaleXs; 237 private float[] mNewScaleYs; 238 private float[] mNewBackgroundAlphas; 239 private float[] mNewBackgroundAlphaMultipliers; 240 private float[] mNewAlphas; 241 private float[] mNewRotationYs; 242 private float mTransitionProgress; 243 244 /** 245 * Used to inflate the Workspace from XML. 246 * 247 * @param context The application's context. 248 * @param attrs The attributes set containing the Workspace's customization values. 249 */ 250 public Workspace(Context context, AttributeSet attrs) { 251 this(context, attrs, 0); 252 } 253 254 /** 255 * Used to inflate the Workspace from XML. 256 * 257 * @param context The application's context. 258 * @param attrs The attributes set containing the Workspace's customization values. 259 * @param defStyle Unused. 260 */ 261 public Workspace(Context context, AttributeSet attrs, int defStyle) { 262 super(context, attrs, defStyle); 263 mContentIsRefreshable = false; 264 265 // With workspace, data is available straight from the get-go 266 setDataIsReady(); 267 268 final Resources res = getResources(); 269 mFadeInAdjacentScreens = res.getBoolean(R.bool.config_workspaceFadeAdjacentScreens); 270 mDragFadeOutAlpha = res.getInteger(R.integer.config_dragFadeOutAlpha) / 100f; 271 mDragFadeOutDuration = res.getInteger(R.integer.config_dragFadeOutDuration); 272 mWallpaperManager = WallpaperManager.getInstance(context); 273 274 int cellCountX = DEFAULT_CELL_COUNT_X; 275 int cellCountY = DEFAULT_CELL_COUNT_Y; 276 277 TypedArray a = context.obtainStyledAttributes(attrs, 278 R.styleable.Workspace, defStyle, 0); 279 280 if (LauncherApplication.isScreenLarge()) { 281 // Determine number of rows/columns dynamically 282 // TODO: This code currently fails on tablets with an aspect ratio < 1.3. 283 // Around that ratio we should make cells the same size in portrait and 284 // landscape 285 TypedArray actionBarSizeTypedArray = 286 context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize }); 287 DisplayMetrics displayMetrics = res.getDisplayMetrics(); 288 final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); 289 final float systemBarHeight = res.getDimension(R.dimen.status_bar_height); 290 final float smallestScreenDim = res.getConfiguration().smallestScreenWidthDp * 291 displayMetrics.density; 292 293 cellCountX = 1; 294 while (CellLayout.widthInPortrait(res, cellCountX + 1) <= smallestScreenDim) { 295 cellCountX++; 296 } 297 298 cellCountY = 1; 299 while (actionBarHeight + CellLayout.heightInLandscape(res, cellCountY + 1) 300 <= smallestScreenDim - systemBarHeight) { 301 cellCountY++; 302 } 303 } 304 305 mSpringLoadedShrinkFactor = 306 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 307 308 // if the value is manually specified, use that instead 309 cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX); 310 cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY); 311 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 312 a.recycle(); 313 314 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 315 setHapticFeedbackEnabled(false); 316 317 mLauncher = (Launcher) context; 318 initWorkspace(); 319 320 // Disable multitouch across the workspace/all apps/customize tray 321 setMotionEventSplittingEnabled(true); 322 } 323 324 // estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each 325 // dimension if unsuccessful 326 public int[] estimateItemSize(int hSpan, int vSpan, 327 PendingAddItemInfo pendingItemInfo, boolean springLoaded) { 328 int[] size = new int[2]; 329 if (getChildCount() > 0) { 330 CellLayout cl = (CellLayout) mLauncher.getWorkspace().getChildAt(0); 331 RectF r = estimateItemPosition(cl, pendingItemInfo, 0, 0, hSpan, vSpan); 332 size[0] = (int) r.width(); 333 size[1] = (int) r.height(); 334 if (springLoaded) { 335 size[0] *= mSpringLoadedShrinkFactor; 336 size[1] *= mSpringLoadedShrinkFactor; 337 } 338 return size; 339 } else { 340 size[0] = Integer.MAX_VALUE; 341 size[1] = Integer.MAX_VALUE; 342 return size; 343 } 344 } 345 public RectF estimateItemPosition(CellLayout cl, ItemInfo pendingInfo, 346 int hCell, int vCell, int hSpan, int vSpan) { 347 RectF r = new RectF(); 348 cl.cellToRect(hCell, vCell, hSpan, vSpan, r); 349 return r; 350 } 351 352 public void buildPageHardwareLayers() { 353 if (getWindowToken() != null) { 354 final int childCount = getChildCount(); 355 for (int i = 0; i < childCount; i++) { 356 CellLayout cl = (CellLayout) getChildAt(i); 357 cl.buildChildrenLayer(); 358 } 359 } 360 } 361 362 public void onDragStart(DragSource source, Object info, int dragAction) { 363 mIsDragOccuring = true; 364 updateChildrenLayersEnabled(); 365 mLauncher.lockScreenOrientationOnLargeUI(); 366 367 // Fade out the workspace slightly to highlight the currently dragging item 368 animate().alpha(mDragFadeOutAlpha).setDuration(mDragFadeOutDuration).start(); 369 } 370 371 public void onDragEnd() { 372 mIsDragOccuring = false; 373 updateChildrenLayersEnabled(); 374 mLauncher.unlockScreenOrientationOnLargeUI(); 375 376 // Fade the workspace back in after we have completed dragging 377 animate().alpha(1f).setDuration(mDragFadeOutDuration).start(); 378 } 379 380 /** 381 * Initializes various states for this workspace. 382 */ 383 protected void initWorkspace() { 384 Context context = getContext(); 385 mCurrentPage = mDefaultPage; 386 Launcher.setScreen(mCurrentPage); 387 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 388 mIconCache = app.getIconCache(); 389 mExternalDragOutlinePaint.setAntiAlias(true); 390 setWillNotDraw(false); 391 setChildrenDrawnWithCacheEnabled(true); 392 393 try { 394 final Resources res = getResources(); 395 mBackground = res.getDrawable(R.drawable.apps_customize_bg); 396 } catch (Resources.NotFoundException e) { 397 // In this case, we will skip drawing background protection 398 } 399 400 mWallpaperOffset = new WallpaperOffsetInterpolator(); 401 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 402 mDisplayWidth = display.getWidth(); 403 mDisplayHeight = display.getHeight(); 404 mWallpaperTravelWidth = (int) (mDisplayWidth * 405 wallpaperTravelToScreenWidthRatio(mDisplayWidth, mDisplayHeight)); 406 407 mFlingThresholdVelocity = (int) (FLING_THRESHOLD_VELOCITY * mDensity); 408 409 } 410 411 @Override 412 protected int getScrollMode() { 413 return SmoothPagedView.X_LARGE_MODE; 414 } 415 416 @Override 417 protected void onViewAdded(View child) { 418 super.onViewAdded(child); 419 if (!(child instanceof CellLayout)) { 420 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 421 } 422 CellLayout cl = ((CellLayout) child); 423 cl.setOnInterceptTouchListener(this); 424 cl.setClickable(true); 425 cl.enableHardwareLayers(); 426 } 427 428 /** 429 * @return The open folder on the current screen, or null if there is none 430 */ 431 Folder getOpenFolder() { 432 DragLayer dragLayer = mLauncher.getDragLayer(); 433 int count = dragLayer.getChildCount(); 434 for (int i = 0; i < count; i++) { 435 View child = dragLayer.getChildAt(i); 436 if (child instanceof Folder) { 437 Folder folder = (Folder) child; 438 if (folder.getInfo().opened) 439 return folder; 440 } 441 } 442 return null; 443 } 444 445 boolean isTouchActive() { 446 return mTouchState != TOUCH_STATE_REST; 447 } 448 449 /** 450 * Adds the specified child in the specified screen. The position and dimension of 451 * the child are defined by x, y, spanX and spanY. 452 * 453 * @param child The child to add in one of the workspace's screens. 454 * @param screen The screen in which to add the child. 455 * @param x The X position of the child in the screen's grid. 456 * @param y The Y position of the child in the screen's grid. 457 * @param spanX The number of cells spanned horizontally by the child. 458 * @param spanY The number of cells spanned vertically by the child. 459 */ 460 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY) { 461 addInScreen(child, container, screen, x, y, spanX, spanY, false); 462 } 463 464 /** 465 * Adds the specified child in the specified screen. The position and dimension of 466 * the child are defined by x, y, spanX and spanY. 467 * 468 * @param child The child to add in one of the workspace's screens. 469 * @param screen The screen in which to add the child. 470 * @param x The X position of the child in the screen's grid. 471 * @param y The Y position of the child in the screen's grid. 472 * @param spanX The number of cells spanned horizontally by the child. 473 * @param spanY The number of cells spanned vertically by the child. 474 * @param insert When true, the child is inserted at the beginning of the children list. 475 */ 476 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY, 477 boolean insert) { 478 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 479 if (screen < 0 || screen >= getChildCount()) { 480 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 481 + " (was " + screen + "); skipping child"); 482 return; 483 } 484 } 485 486 final CellLayout layout; 487 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 488 layout = mLauncher.getHotseat().getLayout(); 489 child.setOnKeyListener(null); 490 491 // Hide folder title in the hotseat 492 if (child instanceof FolderIcon) { 493 ((FolderIcon) child).setTextVisible(false); 494 } 495 496 if (screen < 0) { 497 screen = mLauncher.getHotseat().getOrderInHotseat(x, y); 498 } else { 499 // Note: We do this to ensure that the hotseat is always laid out in the orientation 500 // of the hotseat in order regardless of which orientation they were added 501 x = mLauncher.getHotseat().getCellXFromOrder(screen); 502 y = mLauncher.getHotseat().getCellYFromOrder(screen); 503 } 504 } else { 505 // Show folder title if not in the hotseat 506 if (child instanceof FolderIcon) { 507 ((FolderIcon) child).setTextVisible(true); 508 } 509 510 layout = (CellLayout) getChildAt(screen); 511 child.setOnKeyListener(new IconKeyEventListener()); 512 } 513 514 LayoutParams genericLp = child.getLayoutParams(); 515 CellLayout.LayoutParams lp; 516 if (genericLp == null || !(genericLp instanceof CellLayout.LayoutParams)) { 517 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 518 } else { 519 lp = (CellLayout.LayoutParams) genericLp; 520 lp.cellX = x; 521 lp.cellY = y; 522 lp.cellHSpan = spanX; 523 lp.cellVSpan = spanY; 524 } 525 526 if (spanX < 0 && spanY < 0) { 527 lp.isLockedToGrid = false; 528 } 529 530 // Get the canonical child id to uniquely represent this view in this screen 531 int childId = LauncherModel.getCellLayoutChildId(container, screen, x, y, spanX, spanY); 532 boolean markCellsAsOccupied = !(child instanceof Folder); 533 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 534 // TODO: This branch occurs when the workspace is adding views 535 // outside of the defined grid 536 // maybe we should be deleting these items from the LauncherModel? 537 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 538 } 539 540 if (!(child instanceof Folder)) { 541 child.setHapticFeedbackEnabled(false); 542 child.setOnLongClickListener(mLongClickListener); 543 } 544 if (child instanceof DropTarget) { 545 mDragController.addDropTarget((DropTarget) child); 546 } 547 } 548 549 /** 550 * Check if the point (x, y) hits a given page. 551 */ 552 private boolean hitsPage(int index, float x, float y) { 553 final View page = getChildAt(index); 554 if (page != null) { 555 float[] localXY = { x, y }; 556 mapPointFromSelfToChild(page, localXY); 557 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 558 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 559 } 560 return false; 561 } 562 563 @Override 564 protected boolean hitsPreviousPage(float x, float y) { 565 // mNextPage is set to INVALID_PAGE whenever we are stationary. 566 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 567 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 568 569 // Only allow tap to next page on large devices, where there's significant margin outside 570 // the active workspace 571 return LauncherApplication.isScreenLarge() && hitsPage(current - 1, x, y); 572 } 573 574 @Override 575 protected boolean hitsNextPage(float x, float y) { 576 // mNextPage is set to INVALID_PAGE whenever we are stationary. 577 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 578 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 579 580 // Only allow tap to next page on large devices, where there's significant margin outside 581 // the active workspace 582 return LauncherApplication.isScreenLarge() && hitsPage(current + 1, x, y); 583 } 584 585 /** 586 * Called directly from a CellLayout (not by the framework), after we've been added as a 587 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 588 * that it should intercept touch events, which is not something that is normally supported. 589 */ 590 @Override 591 public boolean onTouch(View v, MotionEvent event) { 592 return (isSmall() || !isFinishedSwitchingState()); 593 } 594 595 public boolean isSwitchingState() { 596 return mIsSwitchingState; 597 } 598 599 /** This differs from isSwitchingState in that we take into account how far the transition 600 * has completed. */ 601 private boolean isFinishedSwitchingState() { 602 return !mIsSwitchingState || (mTransitionProgress > 0.5f); 603 } 604 605 protected void onWindowVisibilityChanged (int visibility) { 606 mLauncher.onWindowVisibilityChanged(visibility); 607 } 608 609 @Override 610 public boolean dispatchUnhandledMove(View focused, int direction) { 611 if (isSmall() || !isFinishedSwitchingState()) { 612 // when the home screens are shrunken, shouldn't allow side-scrolling 613 return false; 614 } 615 return super.dispatchUnhandledMove(focused, direction); 616 } 617 618 @Override 619 public boolean onInterceptTouchEvent(MotionEvent ev) { 620 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 621 case MotionEvent.ACTION_DOWN: 622 mXDown = ev.getX(); 623 mYDown = ev.getY(); 624 break; 625 case MotionEvent.ACTION_POINTER_UP: 626 case MotionEvent.ACTION_UP: 627 if (mTouchState == TOUCH_STATE_REST) { 628 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 629 if (!currentPage.lastDownOnOccupiedCell()) { 630 onWallpaperTap(ev); 631 } 632 } 633 } 634 return super.onInterceptTouchEvent(ev); 635 } 636 637 @Override 638 protected void determineScrollingStart(MotionEvent ev) { 639 if (isSmall()) return; 640 if (!isFinishedSwitchingState()) return; 641 642 float deltaX = Math.abs(ev.getX() - mXDown); 643 float deltaY = Math.abs(ev.getY() - mYDown); 644 645 if (Float.compare(deltaX, 0f) == 0) return; 646 647 float slope = deltaY / deltaX; 648 float theta = (float) Math.atan(slope); 649 650 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 651 cancelCurrentPageLongPress(); 652 } 653 654 if (theta > MAX_SWIPE_ANGLE) { 655 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 656 return; 657 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 658 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 659 // increase the touch slop to make it harder to begin scrolling the workspace. This 660 // results in vertically scrolling widgets to more easily. The higher the angle, the 661 // more we increase touch slop. 662 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 663 float extraRatio = (float) 664 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 665 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 666 } else { 667 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 668 super.determineScrollingStart(ev); 669 } 670 } 671 672 @Override 673 protected boolean isScrollingIndicatorEnabled() { 674 return mState != State.SPRING_LOADED; 675 } 676 677 protected void onPageBeginMoving() { 678 super.onPageBeginMoving(); 679 680 if (isHardwareAccelerated()) { 681 updateChildrenLayersEnabled(); 682 } else { 683 if (mNextPage != INVALID_PAGE) { 684 // we're snapping to a particular screen 685 enableChildrenCache(mCurrentPage, mNextPage); 686 } else { 687 // this is when user is actively dragging a particular screen, they might 688 // swipe it either left or right (but we won't advance by more than one screen) 689 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 690 } 691 } 692 693 // Only show page outlines as we pan if we are on large screen 694 if (LauncherApplication.isScreenLarge()) { 695 showOutlines(); 696 } 697 698 // If we are not fading in adjacent screens, we still need to restore the alpha in case the 699 // user scrolls while we are transitioning (should not affect dispatchDraw optimizations) 700 if (!mFadeInAdjacentScreens) { 701 for (int i = 0; i < getChildCount(); ++i) { 702 getPageAt(i).setAlpha(1f); 703 } 704 } 705 706 // Show the scroll indicator as you pan the page 707 showScrollingIndicator(false); 708 } 709 710 protected void onPageEndMoving() { 711 super.onPageEndMoving(); 712 713 if (isHardwareAccelerated()) { 714 updateChildrenLayersEnabled(); 715 } else { 716 clearChildrenCache(); 717 } 718 719 720 if (mDragController.isDragging()) { 721 if (isSmall()) { 722 // If we are in springloaded mode, then force an event to check if the current touch 723 // is under a new page (to scroll to) 724 mDragController.forceMoveEvent(); 725 } 726 } else { 727 // If we are not mid-dragging, hide the page outlines if we are on a large screen 728 if (LauncherApplication.isScreenLarge()) { 729 hideOutlines(); 730 } 731 732 // Hide the scroll indicator as you pan the page 733 if (!mDragController.isDragging()) { 734 hideScrollingIndicator(false); 735 } 736 } 737 mOverScrollMaxBackgroundAlpha = 0.0f; 738 mOverScrollPageIndex = -1; 739 740 if (mDelayedResizeRunnable != null) { 741 mDelayedResizeRunnable.run(); 742 mDelayedResizeRunnable = null; 743 } 744 } 745 746 @Override 747 protected void notifyPageSwitchListener() { 748 super.notifyPageSwitchListener(); 749 Launcher.setScreen(mCurrentPage); 750 }; 751 752 // As a ratio of screen height, the total distance we want the parallax effect to span 753 // horizontally 754 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 755 float aspectRatio = width / (float) height; 756 757 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 758 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 759 // We will use these two data points to extrapolate how much the wallpaper parallax effect 760 // to span (ie travel) at any aspect ratio: 761 762 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 763 final float ASPECT_RATIO_PORTRAIT = 10/16f; 764 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 765 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 766 767 // To find out the desired width at different aspect ratios, we use the following two 768 // formulas, where the coefficient on x is the aspect ratio (width/height): 769 // (16/10)x + y = 1.5 770 // (10/16)x + y = 1.2 771 // We solve for x and y and end up with a final formula: 772 final float x = 773 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 774 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 775 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 776 return x * aspectRatio + y; 777 } 778 779 // The range of scroll values for Workspace 780 private int getScrollRange() { 781 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 782 } 783 784 protected void setWallpaperDimension() { 785 DisplayMetrics displayMetrics = new DisplayMetrics(); 786 mLauncher.getWindowManager().getDefaultDisplay().getRealMetrics(displayMetrics); 787 final int maxDim = Math.max(displayMetrics.widthPixels, displayMetrics.heightPixels); 788 final int minDim = Math.min(displayMetrics.widthPixels, displayMetrics.heightPixels); 789 790 // We need to ensure that there is enough extra space in the wallpaper for the intended 791 // parallax effects 792 if (LauncherApplication.isScreenLarge()) { 793 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 794 mWallpaperHeight = maxDim; 795 } else { 796 mWallpaperWidth = Math.max((int) (minDim * WALLPAPER_SCREENS_SPAN), maxDim); 797 mWallpaperHeight = maxDim; 798 } 799 new Thread("setWallpaperDimension") { 800 public void run() { 801 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 802 } 803 }.start(); 804 } 805 806 public void setVerticalWallpaperOffset(float offset) { 807 mWallpaperOffset.setFinalY(offset); 808 } 809 public float getVerticalWallpaperOffset() { 810 return mWallpaperOffset.getCurrY(); 811 } 812 public void setHorizontalWallpaperOffset(float offset) { 813 mWallpaperOffset.setFinalX(offset); 814 } 815 public float getHorizontalWallpaperOffset() { 816 return mWallpaperOffset.getCurrX(); 817 } 818 819 private float wallpaperOffsetForCurrentScroll() { 820 // The wallpaper travel width is how far, from left to right, the wallpaper will move 821 // at this orientation. On tablets in portrait mode we don't move all the way to the 822 // edges of the wallpaper, or otherwise the parallax effect would be too strong. 823 int wallpaperTravelWidth = mWallpaperWidth; 824 if (LauncherApplication.isScreenLarge()) { 825 wallpaperTravelWidth = mWallpaperTravelWidth; 826 } 827 828 // Set wallpaper offset steps (1 / (number of screens - 1)) 829 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f); 830 831 // For the purposes of computing the scrollRange and overScrollOffset, we assume 832 // that mLayoutScale is 1. This means that when we're in spring-loaded mode, 833 // there's no discrepancy between the wallpaper offset for a given page. 834 float layoutScale = mLayoutScale; 835 mLayoutScale = 1f; 836 int scrollRange = getScrollRange(); 837 838 // Again, we adjust the wallpaper offset to be consistent between values of mLayoutScale 839 float adjustedScrollX = Math.max(0, Math.min(mScrollX, mMaxScrollX)); 840 adjustedScrollX *= mWallpaperScrollRatio; 841 mLayoutScale = layoutScale; 842 843 float scrollProgress = 844 adjustedScrollX / (float) scrollRange; 845 float offsetInDips = wallpaperTravelWidth * scrollProgress + 846 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 847 float offset = offsetInDips / (float) mWallpaperWidth; 848 return offset; 849 } 850 private void syncWallpaperOffsetWithScroll() { 851 final boolean enableWallpaperEffects = isHardwareAccelerated(); 852 if (enableWallpaperEffects) { 853 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 854 } 855 } 856 857 public void updateWallpaperOffsetImmediately() { 858 mUpdateWallpaperOffsetImmediately = true; 859 } 860 861 private void updateWallpaperOffsets() { 862 boolean updateNow = false; 863 boolean keepUpdating = true; 864 if (mUpdateWallpaperOffsetImmediately) { 865 updateNow = true; 866 keepUpdating = false; 867 mWallpaperOffset.jumpToFinal(); 868 mUpdateWallpaperOffsetImmediately = false; 869 } else { 870 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 871 } 872 if (updateNow) { 873 if (mWindowToken != null) { 874 mWallpaperManager.setWallpaperOffsets(mWindowToken, 875 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 876 } 877 } 878 if (keepUpdating) { 879 invalidate(); 880 } 881 } 882 883 @Override 884 protected void updateCurrentPageScroll() { 885 super.updateCurrentPageScroll(); 886 computeWallpaperScrollRatio(mCurrentPage); 887 } 888 889 @Override 890 protected void snapToPage(int whichPage) { 891 super.snapToPage(whichPage); 892 computeWallpaperScrollRatio(whichPage); 893 } 894 895 private void computeWallpaperScrollRatio(int page) { 896 // Here, we determine what the desired scroll would be with and without a layout scale, 897 // and compute a ratio between the two. This allows us to adjust the wallpaper offset 898 // as though there is no layout scale. 899 float layoutScale = mLayoutScale; 900 int scaled = getChildOffset(page) - getRelativeChildOffset(page); 901 mLayoutScale = 1.0f; 902 float unscaled = getChildOffset(page) - getRelativeChildOffset(page); 903 mLayoutScale = layoutScale; 904 if (scaled > 0) { 905 mWallpaperScrollRatio = (1.0f * unscaled) / scaled; 906 } else { 907 mWallpaperScrollRatio = 1f; 908 } 909 } 910 911 class WallpaperOffsetInterpolator { 912 float mFinalHorizontalWallpaperOffset = 0.0f; 913 float mFinalVerticalWallpaperOffset = 0.5f; 914 float mHorizontalWallpaperOffset = 0.0f; 915 float mVerticalWallpaperOffset = 0.5f; 916 long mLastWallpaperOffsetUpdateTime; 917 boolean mIsMovingFast; 918 boolean mOverrideHorizontalCatchupConstant; 919 float mHorizontalCatchupConstant = 0.35f; 920 float mVerticalCatchupConstant = 0.35f; 921 922 public WallpaperOffsetInterpolator() { 923 } 924 925 public void setOverrideHorizontalCatchupConstant(boolean override) { 926 mOverrideHorizontalCatchupConstant = override; 927 } 928 929 public void setHorizontalCatchupConstant(float f) { 930 mHorizontalCatchupConstant = f; 931 } 932 933 public void setVerticalCatchupConstant(float f) { 934 mVerticalCatchupConstant = f; 935 } 936 937 public boolean computeScrollOffset() { 938 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 939 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 940 mIsMovingFast = false; 941 return false; 942 } 943 boolean isLandscape = mDisplayWidth > mDisplayHeight; 944 945 long currentTime = System.currentTimeMillis(); 946 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 947 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 948 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 949 950 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 951 if (!mIsMovingFast && xdiff > 0.07) { 952 mIsMovingFast = true; 953 } 954 955 float fractionToCatchUpIn1MsHorizontal; 956 if (mOverrideHorizontalCatchupConstant) { 957 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 958 } else if (mIsMovingFast) { 959 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 960 } else { 961 // slow 962 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 963 } 964 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 965 966 fractionToCatchUpIn1MsHorizontal /= 33f; 967 fractionToCatchUpIn1MsVertical /= 33f; 968 969 final float UPDATE_THRESHOLD = 0.00001f; 970 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 971 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 972 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 973 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 974 975 // Don't have any lag between workspace and wallpaper on non-large devices 976 if (!LauncherApplication.isScreenLarge() || jumpToFinalValue) { 977 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 978 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 979 } else { 980 float percentToCatchUpVertical = 981 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 982 float percentToCatchUpHorizontal = 983 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 984 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 985 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 986 } 987 988 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 989 return true; 990 } 991 992 public float getCurrX() { 993 return mHorizontalWallpaperOffset; 994 } 995 996 public float getFinalX() { 997 return mFinalHorizontalWallpaperOffset; 998 } 999 1000 public float getCurrY() { 1001 return mVerticalWallpaperOffset; 1002 } 1003 1004 public float getFinalY() { 1005 return mFinalVerticalWallpaperOffset; 1006 } 1007 1008 public void setFinalX(float x) { 1009 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 1010 } 1011 1012 public void setFinalY(float y) { 1013 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 1014 } 1015 1016 public void jumpToFinal() { 1017 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 1018 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 1019 } 1020 } 1021 1022 @Override 1023 public void computeScroll() { 1024 super.computeScroll(); 1025 syncWallpaperOffsetWithScroll(); 1026 } 1027 1028 void showOutlines() { 1029 if (!isSmall() && !mIsSwitchingState) { 1030 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1031 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1032 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 1033 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 1034 mChildrenOutlineFadeInAnimation.start(); 1035 } 1036 } 1037 1038 void hideOutlines() { 1039 if (!isSmall() && !mIsSwitchingState) { 1040 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1041 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1042 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 1043 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 1044 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 1045 mChildrenOutlineFadeOutAnimation.start(); 1046 } 1047 } 1048 1049 public void showOutlinesTemporarily() { 1050 if (!mIsPageMoving && !isTouchActive()) { 1051 snapToPage(mCurrentPage); 1052 } 1053 } 1054 1055 public void setChildrenOutlineAlpha(float alpha) { 1056 mChildrenOutlineAlpha = alpha; 1057 for (int i = 0; i < getChildCount(); i++) { 1058 CellLayout cl = (CellLayout) getChildAt(i); 1059 cl.setBackgroundAlpha(alpha); 1060 } 1061 } 1062 1063 public float getChildrenOutlineAlpha() { 1064 return mChildrenOutlineAlpha; 1065 } 1066 1067 void disableBackground() { 1068 mDrawBackground = false; 1069 } 1070 void enableBackground() { 1071 mDrawBackground = true; 1072 } 1073 1074 private void animateBackgroundGradient(float finalAlpha, boolean animated) { 1075 if (mBackground == null) return; 1076 if (mBackgroundFadeInAnimation != null) { 1077 mBackgroundFadeInAnimation.cancel(); 1078 mBackgroundFadeInAnimation = null; 1079 } 1080 if (mBackgroundFadeOutAnimation != null) { 1081 mBackgroundFadeOutAnimation.cancel(); 1082 mBackgroundFadeOutAnimation = null; 1083 } 1084 float startAlpha = getBackgroundAlpha(); 1085 if (finalAlpha != startAlpha) { 1086 if (animated) { 1087 mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(startAlpha, finalAlpha); 1088 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1089 public void onAnimationUpdate(ValueAnimator animation) { 1090 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1091 } 1092 }); 1093 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1094 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1095 mBackgroundFadeOutAnimation.start(); 1096 } else { 1097 setBackgroundAlpha(finalAlpha); 1098 } 1099 } 1100 } 1101 1102 public void setBackgroundAlpha(float alpha) { 1103 if (alpha != mBackgroundAlpha) { 1104 mBackgroundAlpha = alpha; 1105 invalidate(); 1106 } 1107 } 1108 1109 public float getBackgroundAlpha() { 1110 return mBackgroundAlpha; 1111 } 1112 1113 /** 1114 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 1115 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 1116 * as being larger. This method computes what offset the rotated view should be translated 1117 * in order to minimize this perceived gap. 1118 * @param degrees Angle of the view 1119 * @param width Width of the view 1120 * @param height Height of the view 1121 * @return Offset to be used in a View.setTranslationX() call 1122 */ 1123 private float getOffsetXForRotation(float degrees, int width, int height) { 1124 mMatrix.reset(); 1125 mCamera.save(); 1126 mCamera.rotateY(Math.abs(degrees)); 1127 mCamera.getMatrix(mMatrix); 1128 mCamera.restore(); 1129 1130 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 1131 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 1132 mTempFloat2[0] = width; 1133 mTempFloat2[1] = height; 1134 mMatrix.mapPoints(mTempFloat2); 1135 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 1136 } 1137 1138 float backgroundAlphaInterpolator(float r) { 1139 float pivotA = 0.1f; 1140 float pivotB = 0.4f; 1141 if (r < pivotA) { 1142 return 0; 1143 } else if (r > pivotB) { 1144 return 1.0f; 1145 } else { 1146 return (r - pivotA)/(pivotB - pivotA); 1147 } 1148 } 1149 1150 float overScrollBackgroundAlphaInterpolator(float r) { 1151 float threshold = 0.08f; 1152 1153 if (r > mOverScrollMaxBackgroundAlpha) { 1154 mOverScrollMaxBackgroundAlpha = r; 1155 } else if (r < mOverScrollMaxBackgroundAlpha) { 1156 r = mOverScrollMaxBackgroundAlpha; 1157 } 1158 1159 return Math.min(r / threshold, 1.0f); 1160 } 1161 1162 private void screenScrolledLargeUI(int screenCenter) { 1163 if (isSwitchingState()) return; 1164 boolean isInOverscroll = false; 1165 for (int i = 0; i < getChildCount(); i++) { 1166 CellLayout cl = (CellLayout) getChildAt(i); 1167 if (cl != null) { 1168 float scrollProgress = getScrollProgress(screenCenter, cl, i); 1169 float rotation = WORKSPACE_ROTATION * scrollProgress; 1170 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1171 1172 // If the current page (i) is being over scrolled, we use a different 1173 // set of rules for setting the background alpha multiplier. 1174 if (!isSmall()) { 1175 if ((mOverScrollX < 0 && i == 0) || (mOverScrollX > mMaxScrollX && 1176 i == getChildCount() -1)) { 1177 isInOverscroll = true; 1178 rotation *= -1; 1179 cl.setBackgroundAlphaMultiplier( 1180 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 1181 mOverScrollPageIndex = i; 1182 cl.setOverScrollAmount(Math.abs(scrollProgress), i == 0); 1183 cl.setPivotX(cl.getMeasuredWidth() * (i == 0 ? 0.75f : 0.25f)); 1184 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1185 cl.setOverscrollTransformsDirty(true); 1186 } else if (mOverScrollPageIndex != i) { 1187 cl.setBackgroundAlphaMultiplier( 1188 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1189 } 1190 } 1191 cl.setTranslationX(translationX); 1192 cl.setRotationY(rotation); 1193 if (mFadeInAdjacentScreens && !isSmall()) { 1194 float alpha = 1 - Math.abs(scrollProgress); 1195 cl.setAlpha(alpha); 1196 } 1197 } 1198 } 1199 if (!isSwitchingState() && !isInOverscroll) { 1200 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1201 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1202 } 1203 invalidate(); 1204 } 1205 1206 private void screenScrolledStandardUI(int screenCenter) { 1207 if (mOverScrollX < 0 || mOverScrollX > mMaxScrollX) { 1208 int index = mOverScrollX < 0 ? 0 : getChildCount() - 1; 1209 CellLayout cl = (CellLayout) getChildAt(index); 1210 float scrollProgress = getScrollProgress(screenCenter, cl, index); 1211 cl.setOverScrollAmount(Math.abs(scrollProgress), index == 0); 1212 float rotation = - WORKSPACE_OVERSCROLL_ROTATION * scrollProgress; 1213 cl.setCameraDistance(mDensity * CAMERA_DISTANCE); 1214 cl.setPivotX(cl.getMeasuredWidth() * (index == 0 ? 0.75f : 0.25f)); 1215 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1216 cl.setRotationY(rotation); 1217 cl.setOverscrollTransformsDirty(true); 1218 setFadeForOverScroll(Math.abs(scrollProgress)); 1219 } else { 1220 if (mOverscrollFade != 0) { 1221 setFadeForOverScroll(0); 1222 } 1223 // We don't want to mess with the translations during transitions 1224 if (!isSwitchingState()) { 1225 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1226 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1227 } 1228 } 1229 } 1230 1231 @Override 1232 protected void screenScrolled(int screenCenter) { 1233 if (LauncherApplication.isScreenLarge()) { 1234 // We don't call super.screenScrolled() here because we handle the adjacent pages alpha 1235 // ourselves (for efficiency), and there are no scrolling indicators to update. 1236 screenScrolledLargeUI(screenCenter); 1237 } else { 1238 super.screenScrolled(screenCenter); 1239 screenScrolledStandardUI(screenCenter); 1240 } 1241 } 1242 1243 @Override 1244 protected void overScroll(float amount) { 1245 if (LauncherApplication.isScreenLarge()) { 1246 dampedOverScroll(amount); 1247 } else { 1248 acceleratedOverScroll(amount); 1249 } 1250 } 1251 1252 protected void onAttachedToWindow() { 1253 super.onAttachedToWindow(); 1254 mWindowToken = getWindowToken(); 1255 computeScroll(); 1256 mDragController.setWindowToken(mWindowToken); 1257 } 1258 1259 protected void onDetachedFromWindow() { 1260 mWindowToken = null; 1261 } 1262 1263 @Override 1264 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1265 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1266 mUpdateWallpaperOffsetImmediately = true; 1267 } 1268 super.onLayout(changed, left, top, right, bottom); 1269 } 1270 1271 @Override 1272 protected void onDraw(Canvas canvas) { 1273 updateWallpaperOffsets(); 1274 1275 // Draw the background gradient if necessary 1276 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1277 int alpha = (int) (mBackgroundAlpha * 255); 1278 mBackground.setAlpha(alpha); 1279 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1280 getMeasuredHeight()); 1281 mBackground.draw(canvas); 1282 } 1283 1284 super.onDraw(canvas); 1285 } 1286 1287 boolean isDrawingBackgroundGradient() { 1288 return (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground); 1289 } 1290 1291 @Override 1292 protected void dispatchDraw(Canvas canvas) { 1293 super.dispatchDraw(canvas); 1294 1295 if (mInScrollArea && !LauncherApplication.isScreenLarge()) { 1296 final int width = getWidth(); 1297 final int height = getHeight(); 1298 final int pageHeight = getChildAt(0).getHeight(); 1299 1300 // Set the height of the outline to be the height of the page 1301 final int offset = (height - pageHeight - mPaddingTop - mPaddingBottom) / 2; 1302 final int paddingTop = mPaddingTop + offset; 1303 final int paddingBottom = mPaddingBottom + offset; 1304 1305 final int page = (mNextPage != INVALID_PAGE ? mNextPage : mCurrentPage); 1306 final CellLayout leftPage = (CellLayout) getChildAt(page - 1); 1307 final CellLayout rightPage = (CellLayout) getChildAt(page + 1); 1308 1309 if (leftPage != null && leftPage.getIsDragOverlapping()) { 1310 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left_holo); 1311 d.setBounds(mScrollX, paddingTop, mScrollX + d.getIntrinsicWidth(), 1312 height - paddingBottom); 1313 d.draw(canvas); 1314 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 1315 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right_holo); 1316 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), paddingTop, mScrollX + width, 1317 height - paddingBottom); 1318 d.draw(canvas); 1319 } 1320 } 1321 } 1322 1323 @Override 1324 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1325 if (!mLauncher.isAllAppsVisible()) { 1326 final Folder openFolder = getOpenFolder(); 1327 if (openFolder != null) { 1328 return openFolder.requestFocus(direction, previouslyFocusedRect); 1329 } else { 1330 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1331 } 1332 } 1333 return false; 1334 } 1335 1336 @Override 1337 public int getDescendantFocusability() { 1338 if (isSmall()) { 1339 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1340 } 1341 return super.getDescendantFocusability(); 1342 } 1343 1344 @Override 1345 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1346 if (!mLauncher.isAllAppsVisible()) { 1347 final Folder openFolder = getOpenFolder(); 1348 if (openFolder != null) { 1349 openFolder.addFocusables(views, direction); 1350 } else { 1351 super.addFocusables(views, direction, focusableMode); 1352 } 1353 } 1354 } 1355 1356 public boolean isSmall() { 1357 return mState == State.SMALL || mState == State.SPRING_LOADED; 1358 } 1359 1360 void enableChildrenCache(int fromPage, int toPage) { 1361 if (fromPage > toPage) { 1362 final int temp = fromPage; 1363 fromPage = toPage; 1364 toPage = temp; 1365 } 1366 1367 final int screenCount = getChildCount(); 1368 1369 fromPage = Math.max(fromPage, 0); 1370 toPage = Math.min(toPage, screenCount - 1); 1371 1372 for (int i = fromPage; i <= toPage; i++) { 1373 final CellLayout layout = (CellLayout) getChildAt(i); 1374 layout.setChildrenDrawnWithCacheEnabled(true); 1375 layout.setChildrenDrawingCacheEnabled(true); 1376 } 1377 } 1378 1379 void clearChildrenCache() { 1380 final int screenCount = getChildCount(); 1381 for (int i = 0; i < screenCount; i++) { 1382 final CellLayout layout = (CellLayout) getChildAt(i); 1383 layout.setChildrenDrawnWithCacheEnabled(false); 1384 // In software mode, we don't want the items to continue to be drawn into bitmaps 1385 if (!isHardwareAccelerated()) { 1386 layout.setChildrenDrawingCacheEnabled(false); 1387 } 1388 } 1389 } 1390 1391 private void updateChildrenLayersEnabled() { 1392 boolean small = isSmall() || mIsSwitchingState; 1393 boolean dragging = mAnimatingViewIntoPlace || mIsDragOccuring; 1394 boolean enableChildrenLayers = small || dragging || isPageMoving(); 1395 1396 if (enableChildrenLayers != mChildrenLayersEnabled) { 1397 mChildrenLayersEnabled = enableChildrenLayers; 1398 for (int i = 0; i < getPageCount(); i++) { 1399 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(mChildrenLayersEnabled); 1400 } 1401 } 1402 } 1403 1404 protected void onWallpaperTap(MotionEvent ev) { 1405 final int[] position = mTempCell; 1406 getLocationOnScreen(position); 1407 1408 int pointerIndex = ev.getActionIndex(); 1409 position[0] += (int) ev.getX(pointerIndex); 1410 position[1] += (int) ev.getY(pointerIndex); 1411 1412 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1413 ev.getAction() == MotionEvent.ACTION_UP 1414 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1415 position[0], position[1], 0, null); 1416 } 1417 1418 /* 1419 * This interpolator emulates the rate at which the perceived scale of an object changes 1420 * as its distance from a camera increases. When this interpolator is applied to a scale 1421 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1422 * from the camera. 1423 */ 1424 static class ZInterpolator implements TimeInterpolator { 1425 private float focalLength; 1426 1427 public ZInterpolator(float foc) { 1428 focalLength = foc; 1429 } 1430 1431 public float getInterpolation(float input) { 1432 return (1.0f - focalLength / (focalLength + input)) / 1433 (1.0f - focalLength / (focalLength + 1.0f)); 1434 } 1435 } 1436 1437 /* 1438 * The exact reverse of ZInterpolator. 1439 */ 1440 static class InverseZInterpolator implements TimeInterpolator { 1441 private ZInterpolator zInterpolator; 1442 public InverseZInterpolator(float foc) { 1443 zInterpolator = new ZInterpolator(foc); 1444 } 1445 public float getInterpolation(float input) { 1446 return 1 - zInterpolator.getInterpolation(1 - input); 1447 } 1448 } 1449 1450 /* 1451 * ZInterpolator compounded with an ease-out. 1452 */ 1453 static class ZoomOutInterpolator implements TimeInterpolator { 1454 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(0.75f); 1455 private final ZInterpolator zInterpolator = new ZInterpolator(0.13f); 1456 1457 public float getInterpolation(float input) { 1458 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1459 } 1460 } 1461 1462 /* 1463 * InvereZInterpolator compounded with an ease-out. 1464 */ 1465 static class ZoomInInterpolator implements TimeInterpolator { 1466 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1467 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1468 1469 public float getInterpolation(float input) { 1470 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1471 } 1472 } 1473 1474 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1475 1476 /* 1477 * 1478 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1479 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1480 * 1481 * These methods mark the appropriate pages as accepting drops (which alters their visual 1482 * appearance). 1483 * 1484 */ 1485 public void onDragStartedWithItem(View v) { 1486 final Canvas canvas = new Canvas(); 1487 1488 // We need to add extra padding to the bitmap to make room for the glow effect 1489 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1490 1491 // The outline is used to visualize where the item will land if dropped 1492 mDragOutline = createDragOutline(v, canvas, bitmapPadding); 1493 } 1494 1495 public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, Paint alphaClipPaint) { 1496 final Canvas canvas = new Canvas(); 1497 1498 // We need to add extra padding to the bitmap to make room for the glow effect 1499 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1500 1501 int[] size = estimateItemSize(info.spanX, info.spanY, info, false); 1502 1503 // The outline is used to visualize where the item will land if dropped 1504 mDragOutline = createDragOutline(b, canvas, bitmapPadding, size[0], size[1], alphaClipPaint); 1505 } 1506 1507 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1508 // never dragged over 1509 public void onDragStopped(boolean success) { 1510 // In the success case, DragController has already called onDragExit() 1511 if (!success) { 1512 doDragExit(null); 1513 } 1514 } 1515 1516 public void exitWidgetResizeMode() { 1517 DragLayer dragLayer = mLauncher.getDragLayer(); 1518 dragLayer.clearAllResizeFrames(); 1519 } 1520 1521 private void initAnimationArrays() { 1522 final int childCount = getChildCount(); 1523 if (mOldTranslationXs != null) return; 1524 mOldTranslationXs = new float[childCount]; 1525 mOldTranslationYs = new float[childCount]; 1526 mOldScaleXs = new float[childCount]; 1527 mOldScaleYs = new float[childCount]; 1528 mOldBackgroundAlphas = new float[childCount]; 1529 mOldBackgroundAlphaMultipliers = new float[childCount]; 1530 mOldAlphas = new float[childCount]; 1531 mOldRotationYs = new float[childCount]; 1532 mNewTranslationXs = new float[childCount]; 1533 mNewTranslationYs = new float[childCount]; 1534 mNewScaleXs = new float[childCount]; 1535 mNewScaleYs = new float[childCount]; 1536 mNewBackgroundAlphas = new float[childCount]; 1537 mNewBackgroundAlphaMultipliers = new float[childCount]; 1538 mNewAlphas = new float[childCount]; 1539 mNewRotationYs = new float[childCount]; 1540 } 1541 1542 Animator getChangeStateAnimation(final State state, boolean animated) { 1543 return getChangeStateAnimation(state, animated, 0); 1544 } 1545 1546 Animator getChangeStateAnimation(final State state, boolean animated, int delay) { 1547 if (mState == state) { 1548 return null; 1549 } 1550 1551 // Initialize animation arrays for the first time if necessary 1552 initAnimationArrays(); 1553 1554 AnimatorSet anim = animated ? new AnimatorSet() : null; 1555 1556 // Stop any scrolling, move to the current page right away 1557 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1558 1559 final State oldState = mState; 1560 final boolean oldStateIsNormal = (oldState == State.NORMAL); 1561 final boolean oldStateIsSmall = (oldState == State.SMALL); 1562 mState = state; 1563 final boolean stateIsNormal = (state == State.NORMAL); 1564 final boolean stateIsSpringLoaded = (state == State.SPRING_LOADED); 1565 final boolean stateIsSmall = (state == State.SMALL); 1566 float finalScaleFactor = 1.0f; 1567 float finalBackgroundAlpha = stateIsSpringLoaded ? 1.0f : 0f; 1568 float translationX = 0; 1569 float translationY = 0; 1570 boolean zoomIn = true; 1571 1572 if (state != State.NORMAL) { 1573 finalScaleFactor = mSpringLoadedShrinkFactor - (stateIsSmall ? 0.1f : 0); 1574 if (oldStateIsNormal && stateIsSmall) { 1575 zoomIn = false; 1576 setLayoutScale(finalScaleFactor); 1577 updateChildrenLayersEnabled(); 1578 } else { 1579 finalBackgroundAlpha = 1.0f; 1580 setLayoutScale(finalScaleFactor); 1581 } 1582 } else { 1583 setLayoutScale(1.0f); 1584 } 1585 1586 final int duration = zoomIn ? 1587 getResources().getInteger(R.integer.config_workspaceUnshrinkTime) : 1588 getResources().getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1589 for (int i = 0; i < getChildCount(); i++) { 1590 final CellLayout cl = (CellLayout) getChildAt(i); 1591 float rotation = 0f; 1592 float initialAlpha = cl.getAlpha(); 1593 float finalAlphaMultiplierValue = 1f; 1594 float finalAlpha = (!mFadeInAdjacentScreens || stateIsSpringLoaded || 1595 (i == mCurrentPage)) ? 1f : 0f; 1596 1597 // Determine the pages alpha during the state transition 1598 if ((oldStateIsSmall && stateIsNormal) || 1599 (oldStateIsNormal && stateIsSmall)) { 1600 // To/from workspace - only show the current page unless the transition is not 1601 // animated and the animation end callback below doesn't run 1602 if (i == mCurrentPage || !animated) { 1603 finalAlpha = 1f; 1604 finalAlphaMultiplierValue = 0f; 1605 } else { 1606 initialAlpha = 0f; 1607 finalAlpha = 0f; 1608 } 1609 } 1610 1611 // Update the rotation of the screen (don't apply rotation on Phone UI) 1612 if (LauncherApplication.isScreenLarge()) { 1613 if (i < mCurrentPage) { 1614 rotation = WORKSPACE_ROTATION; 1615 } else if (i > mCurrentPage) { 1616 rotation = -WORKSPACE_ROTATION; 1617 } 1618 } 1619 1620 // If the screen is not xlarge, then don't rotate the CellLayouts 1621 // NOTE: If we don't update the side pages alpha, then we should not hide the side 1622 // pages. see unshrink(). 1623 if (LauncherApplication.isScreenLarge()) { 1624 translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1625 } 1626 1627 mOldAlphas[i] = initialAlpha; 1628 mNewAlphas[i] = finalAlpha; 1629 if (animated) { 1630 mOldTranslationXs[i] = cl.getTranslationX(); 1631 mOldTranslationYs[i] = cl.getTranslationY(); 1632 mOldScaleXs[i] = cl.getScaleX(); 1633 mOldScaleYs[i] = cl.getScaleY(); 1634 mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1635 mOldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1636 mOldRotationYs[i] = cl.getRotationY(); 1637 1638 mNewTranslationXs[i] = translationX; 1639 mNewTranslationYs[i] = translationY; 1640 mNewScaleXs[i] = finalScaleFactor; 1641 mNewScaleYs[i] = finalScaleFactor; 1642 mNewBackgroundAlphas[i] = finalBackgroundAlpha; 1643 mNewBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1644 mNewRotationYs[i] = rotation; 1645 } else { 1646 cl.setTranslationX(translationX); 1647 cl.setTranslationY(translationY); 1648 cl.setScaleX(finalScaleFactor); 1649 cl.setScaleY(finalScaleFactor); 1650 cl.setBackgroundAlpha(finalBackgroundAlpha); 1651 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1652 cl.setAlpha(finalAlpha); 1653 cl.setRotationY(rotation); 1654 } 1655 } 1656 1657 if (animated) { 1658 for (int index = 0; index < getChildCount(); index++) { 1659 final int i = index; 1660 final CellLayout cl = (CellLayout) getChildAt(i); 1661 if (mOldAlphas[i] == 0 && mNewAlphas[i] == 0) { 1662 cl.setTranslationX(mNewTranslationXs[i]); 1663 cl.setTranslationY(mNewTranslationYs[i]); 1664 cl.setScaleX(mNewScaleXs[i]); 1665 cl.setScaleY(mNewScaleYs[i]); 1666 cl.setBackgroundAlpha(mNewBackgroundAlphas[i]); 1667 cl.setBackgroundAlphaMultiplier(mNewBackgroundAlphaMultipliers[i]); 1668 cl.setAlpha(mNewAlphas[i]); 1669 cl.setRotationY(mNewRotationYs[i]); 1670 } else { 1671 LauncherViewPropertyAnimator a = new LauncherViewPropertyAnimator(cl); 1672 a.translationX(mNewTranslationXs[i]) 1673 .translationY(mNewTranslationYs[i]) 1674 .scaleX(mNewScaleXs[i]) 1675 .scaleY(mNewScaleYs[i]) 1676 .setDuration(duration) 1677 .setInterpolator(mZoomInInterpolator); 1678 if (mOldAlphas[i] != mNewAlphas[i]) { 1679 a.alpha(mNewAlphas[i]); 1680 } 1681 anim.play(a); 1682 if (mOldRotationYs[i] != 0 || mNewRotationYs[i] != 0) { 1683 ValueAnimator rotate = ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1684 rotate.setInterpolator(new DecelerateInterpolator(2.0f)); 1685 rotate.addUpdateListener(new LauncherAnimatorUpdateListener() { 1686 public void onAnimationUpdate(float a, float b) { 1687 cl.setRotationY(a * mOldRotationYs[i] + b * mNewRotationYs[i]); 1688 } 1689 }); 1690 anim.play(rotate); 1691 } 1692 if (mOldBackgroundAlphas[i] != 0 || 1693 mNewBackgroundAlphas[i] != 0 || 1694 mOldBackgroundAlphaMultipliers[i] != 0 || 1695 mNewBackgroundAlphaMultipliers[i] != 0) { 1696 ValueAnimator bgAnim = ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1697 bgAnim.setInterpolator(mZoomInInterpolator); 1698 bgAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1699 public void onAnimationUpdate(float a, float b) { 1700 cl.setBackgroundAlpha( 1701 a * mOldBackgroundAlphas[i] + 1702 b * mNewBackgroundAlphas[i]); 1703 cl.setBackgroundAlphaMultiplier( 1704 a * mOldBackgroundAlphaMultipliers[i] + 1705 b * mNewBackgroundAlphaMultipliers[i]); 1706 } 1707 }); 1708 anim.play(bgAnim); 1709 } 1710 } 1711 } 1712 anim.setStartDelay(delay); 1713 } 1714 1715 if (stateIsSpringLoaded) { 1716 // Right now we're covered by Apps Customize 1717 // Show the background gradient immediately, so the gradient will 1718 // be showing once AppsCustomize disappears 1719 animateBackgroundGradient(getResources().getInteger( 1720 R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, false); 1721 } else { 1722 // Fade the background gradient away 1723 animateBackgroundGradient(0f, true); 1724 } 1725 return anim; 1726 } 1727 1728 @Override 1729 public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) { 1730 mIsSwitchingState = true; 1731 } 1732 1733 @Override 1734 public void onLauncherTransitionStep(Launcher l, float t) { 1735 mTransitionProgress = t; 1736 } 1737 1738 @Override 1739 public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) { 1740 mIsSwitchingState = false; 1741 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 1742 updateChildrenLayersEnabled(); 1743 // The code in getChangeStateAnimation to determine initialAlpha and finalAlpha will ensure 1744 // ensure that only the current page is visible during (and subsequently, after) the 1745 // transition animation. If fade adjacent pages is disabled, then re-enable the page 1746 // visibility after the transition animation. 1747 if (!mFadeInAdjacentScreens) { 1748 for (int i = 0; i < getChildCount(); i++) { 1749 final CellLayout cl = (CellLayout) getChildAt(i); 1750 cl.setAlpha(1f); 1751 } 1752 } 1753 } 1754 1755 @Override 1756 public View getContent() { 1757 return this; 1758 } 1759 1760 /** 1761 * Draw the View v into the given Canvas. 1762 * 1763 * @param v the view to draw 1764 * @param destCanvas the canvas to draw on 1765 * @param padding the horizontal and vertical padding to use when drawing 1766 */ 1767 private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { 1768 final Rect clipRect = mTempRect; 1769 v.getDrawingRect(clipRect); 1770 1771 boolean textVisible = false; 1772 1773 destCanvas.save(); 1774 if (v instanceof TextView && pruneToDrawable) { 1775 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1776 clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); 1777 destCanvas.translate(padding / 2, padding / 2); 1778 d.draw(destCanvas); 1779 } else { 1780 if (v instanceof FolderIcon) { 1781 // For FolderIcons the text can bleed into the icon area, and so we need to 1782 // hide the text completely (which can't be achieved by clipping). 1783 if (((FolderIcon) v).getTextVisible()) { 1784 ((FolderIcon) v).setTextVisible(false); 1785 textVisible = true; 1786 } 1787 } else if (v instanceof BubbleTextView) { 1788 final BubbleTextView tv = (BubbleTextView) v; 1789 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1790 tv.getLayout().getLineTop(0); 1791 } else if (v instanceof TextView) { 1792 final TextView tv = (TextView) v; 1793 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1794 tv.getLayout().getLineTop(0); 1795 } 1796 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1797 destCanvas.clipRect(clipRect, Op.REPLACE); 1798 v.draw(destCanvas); 1799 1800 // Restore text visibility of FolderIcon if necessary 1801 if (textVisible) { 1802 ((FolderIcon) v).setTextVisible(true); 1803 } 1804 } 1805 destCanvas.restore(); 1806 } 1807 1808 /** 1809 * Returns a new bitmap to show when the given View is being dragged around. 1810 * Responsibility for the bitmap is transferred to the caller. 1811 */ 1812 public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1813 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1814 Bitmap b; 1815 1816 if (v instanceof TextView) { 1817 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1818 b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, 1819 d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); 1820 } else { 1821 b = Bitmap.createBitmap( 1822 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1823 } 1824 1825 canvas.setBitmap(b); 1826 drawDragView(v, canvas, padding, true); 1827 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 1828 canvas.setBitmap(null); 1829 1830 return b; 1831 } 1832 1833 /** 1834 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1835 * Responsibility for the bitmap is transferred to the caller. 1836 */ 1837 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1838 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1839 final Bitmap b = Bitmap.createBitmap( 1840 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1841 1842 canvas.setBitmap(b); 1843 drawDragView(v, canvas, padding, true); 1844 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1845 canvas.setBitmap(null); 1846 return b; 1847 } 1848 1849 /** 1850 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1851 * Responsibility for the bitmap is transferred to the caller. 1852 */ 1853 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h, 1854 Paint alphaClipPaint) { 1855 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1856 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1857 canvas.setBitmap(b); 1858 1859 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 1860 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 1861 (h - padding) / (float) orig.getHeight()); 1862 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 1863 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 1864 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 1865 1866 // center the image 1867 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 1868 1869 canvas.drawBitmap(orig, src, dst, null); 1870 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor, 1871 alphaClipPaint); 1872 canvas.setBitmap(null); 1873 1874 return b; 1875 } 1876 1877 /** 1878 * Creates a drag outline to represent a drop (that we don't have the actual information for 1879 * yet). May be changed in the future to alter the drop outline slightly depending on the 1880 * clip description mime data. 1881 */ 1882 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 1883 Resources r = getResources(); 1884 final int outlineColor = r.getColor(android.R.color.holo_blue_light); 1885 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 1886 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 1887 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 1888 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 1889 final Bitmap b = Bitmap.createBitmap( 1890 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 1891 1892 canvas.setBitmap(b); 1893 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 1894 rectRadius, rectRadius, mExternalDragOutlinePaint); 1895 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1896 canvas.setBitmap(null); 1897 return b; 1898 } 1899 1900 void startDrag(CellLayout.CellInfo cellInfo) { 1901 View child = cellInfo.cell; 1902 1903 // Make sure the drag was started by a long press as opposed to a long click. 1904 if (!child.isInTouchMode()) { 1905 return; 1906 } 1907 1908 mDragInfo = cellInfo; 1909 child.setVisibility(GONE); 1910 1911 child.clearFocus(); 1912 child.setPressed(false); 1913 1914 final Canvas canvas = new Canvas(); 1915 1916 // We need to add extra padding to the bitmap to make room for the glow effect 1917 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1918 1919 // The outline is used to visualize where the item will land if dropped 1920 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 1921 beginDragShared(child, this); 1922 } 1923 1924 public void beginDragShared(View child, DragSource source) { 1925 Resources r = getResources(); 1926 1927 // We need to add extra padding to the bitmap to make room for the glow effect 1928 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1929 1930 // The drag bitmap follows the touch point around on the screen 1931 final Bitmap b = createDragBitmap(child, new Canvas(), bitmapPadding); 1932 1933 final int bmpWidth = b.getWidth(); 1934 1935 mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 1936 final int dragLayerX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 1937 int dragLayerY = mTempXY[1] - bitmapPadding / 2; 1938 1939 Point dragVisualizeOffset = null; 1940 Rect dragRect = null; 1941 if (child instanceof BubbleTextView || child instanceof PagedViewIcon) { 1942 int iconSize = r.getDimensionPixelSize(R.dimen.app_icon_size); 1943 int iconPaddingTop = r.getDimensionPixelSize(R.dimen.app_icon_padding_top); 1944 int top = child.getPaddingTop(); 1945 int left = (bmpWidth - iconSize) / 2; 1946 int right = left + iconSize; 1947 int bottom = top + iconSize; 1948 dragLayerY += top; 1949 // Note: The drag region is used to calculate drag layer offsets, but the 1950 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 1951 dragVisualizeOffset = new Point(-bitmapPadding / 2, iconPaddingTop - bitmapPadding / 2); 1952 dragRect = new Rect(left, top, right, bottom); 1953 } else if (child instanceof FolderIcon) { 1954 int previewSize = r.getDimensionPixelSize(R.dimen.folder_preview_size); 1955 dragRect = new Rect(0, 0, child.getWidth(), previewSize); 1956 } 1957 1958 // Clear the pressed state if necessary 1959 if (child instanceof BubbleTextView) { 1960 BubbleTextView icon = (BubbleTextView) child; 1961 icon.clearPressedOrFocusedBackground(); 1962 } 1963 1964 mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 1965 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect, 1f); 1966 b.recycle(); 1967 1968 // Show the scrolling indicator when you pick up an item 1969 showScrollingIndicator(false); 1970 } 1971 1972 void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, int screen, 1973 int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { 1974 View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); 1975 1976 final int[] cellXY = new int[2]; 1977 target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1978 addInScreen(view, container, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1979 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, cellXY[0], 1980 cellXY[1]); 1981 } 1982 1983 public boolean transitionStateShouldAllowDrop() { 1984 return ((!isSwitchingState() || mTransitionProgress > 0.5f) && mState != State.SMALL); 1985 } 1986 1987 /** 1988 * {@inheritDoc} 1989 */ 1990 public boolean acceptDrop(DragObject d) { 1991 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1992 if (d.dragSource != this) { 1993 // Don't accept the drop if we're not over a screen at time of drop 1994 if (mDragTargetLayout == null) { 1995 return false; 1996 } 1997 if (!transitionStateShouldAllowDrop()) return false; 1998 1999 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2000 d.dragView, mDragViewVisualCenter); 2001 2002 // We want the point to be mapped to the dragTarget. 2003 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2004 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2005 } else { 2006 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2007 } 2008 2009 int spanX = 1; 2010 int spanY = 1; 2011 View ignoreView = null; 2012 if (mDragInfo != null) { 2013 final CellLayout.CellInfo dragCellInfo = mDragInfo; 2014 spanX = dragCellInfo.spanX; 2015 spanY = dragCellInfo.spanY; 2016 ignoreView = dragCellInfo.cell; 2017 } else { 2018 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 2019 spanX = dragInfo.spanX; 2020 spanY = dragInfo.spanY; 2021 } 2022 2023 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2024 (int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell); 2025 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, true)) { 2026 return true; 2027 } 2028 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, 2029 mTargetCell)) { 2030 return true; 2031 } 2032 2033 // Don't accept the drop if there's no room for the item 2034 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 2035 // Don't show the message if we are dropping on the AllApps button and the hotseat 2036 // is full 2037 if (mTargetCell != null && mLauncher.isHotseatLayout(mDragTargetLayout)) { 2038 Hotseat hotseat = mLauncher.getHotseat(); 2039 if (Hotseat.isAllAppsButtonRank( 2040 hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { 2041 return false; 2042 } 2043 } 2044 2045 mLauncher.showOutOfSpaceMessage(); 2046 return false; 2047 } 2048 } 2049 return true; 2050 } 2051 2052 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, 2053 boolean considerTimeout) { 2054 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2055 2056 boolean hasntMoved = false; 2057 if (mDragInfo != null) { 2058 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2059 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2060 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2061 } 2062 2063 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2064 return false; 2065 } 2066 2067 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2068 boolean willBecomeShortcut = 2069 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2070 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2071 2072 return (aboveShortcut && willBecomeShortcut); 2073 } 2074 2075 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell) { 2076 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2077 if (dropOverView instanceof FolderIcon) { 2078 FolderIcon fi = (FolderIcon) dropOverView; 2079 if (fi.acceptDrop(dragInfo)) { 2080 return true; 2081 } 2082 } 2083 return false; 2084 } 2085 2086 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2087 int[] targetCell, boolean external, DragView dragView, Runnable postAnimationRunnable) { 2088 View v = target.getChildAt(targetCell[0], targetCell[1]); 2089 boolean hasntMoved = false; 2090 if (mDragInfo != null) { 2091 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2092 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2093 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2094 } 2095 2096 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2097 mCreateUserFolderOnDrop = false; 2098 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 2099 2100 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2101 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2102 2103 if (aboveShortcut && willBecomeShortcut) { 2104 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2105 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2106 // if the drag started here, we need to remove it from the workspace 2107 if (!external) { 2108 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2109 } 2110 2111 Rect folderLocation = new Rect(); 2112 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2113 target.removeView(v); 2114 2115 FolderIcon fi = 2116 mLauncher.addFolder(target, container, screen, targetCell[0], targetCell[1]); 2117 destInfo.cellX = -1; 2118 destInfo.cellY = -1; 2119 sourceInfo.cellX = -1; 2120 sourceInfo.cellY = -1; 2121 2122 // If the dragView is null, we can't animate 2123 boolean animate = dragView != null; 2124 if (animate) { 2125 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2126 postAnimationRunnable); 2127 } else { 2128 fi.addItem(destInfo); 2129 fi.addItem(sourceInfo); 2130 } 2131 return true; 2132 } 2133 return false; 2134 } 2135 2136 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2137 DragObject d, boolean external) { 2138 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2139 if (dropOverView instanceof FolderIcon) { 2140 FolderIcon fi = (FolderIcon) dropOverView; 2141 if (fi.acceptDrop(d.dragInfo)) { 2142 fi.onDrop(d); 2143 2144 // if the drag started here, we need to remove it from the workspace 2145 if (!external) { 2146 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2147 } 2148 return true; 2149 } 2150 } 2151 return false; 2152 } 2153 2154 public void onDrop(DragObject d) { 2155 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2156 mDragViewVisualCenter); 2157 2158 // We want the point to be mapped to the dragTarget. 2159 if (mDragTargetLayout != null) { 2160 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2161 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2162 } else { 2163 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2164 } 2165 } 2166 2167 CellLayout dropTargetLayout = mDragTargetLayout; 2168 2169 int snapScreen = -1; 2170 if (d.dragSource != this) { 2171 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2172 (int) mDragViewVisualCenter[1] }; 2173 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2174 } else if (mDragInfo != null) { 2175 final View cell = mDragInfo.cell; 2176 2177 if (dropTargetLayout != null) { 2178 // Move internally 2179 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2180 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2181 long container = hasMovedIntoHotseat ? 2182 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2183 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2184 int screen = (mTargetCell[0] < 0) ? 2185 mDragInfo.screen : indexOfChild(dropTargetLayout); 2186 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2187 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2188 // First we find the cell nearest to point at which the item is 2189 // dropped, without any consideration to whether there is an item there. 2190 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2191 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2192 // If the item being dropped is a shortcut and the nearest drop 2193 // cell also contains a shortcut, then create a folder with the two shortcuts. 2194 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2195 dropTargetLayout, mTargetCell, false, d.dragView, null)) { 2196 return; 2197 } 2198 2199 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, d, false)) { 2200 return; 2201 } 2202 2203 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2204 // we need to find the nearest cell location that is vacant 2205 mTargetCell = findNearestVacantArea((int) mDragViewVisualCenter[0], 2206 (int) mDragViewVisualCenter[1], mDragInfo.spanX, mDragInfo.spanY, cell, 2207 dropTargetLayout, mTargetCell); 2208 2209 if (mCurrentPage != screen && !hasMovedIntoHotseat) { 2210 snapScreen = screen; 2211 snapToPage(screen); 2212 } 2213 2214 if (mTargetCell[0] >= 0 && mTargetCell[1] >= 0) { 2215 if (hasMovedLayouts) { 2216 // Reparent the view 2217 getParentCellLayoutForView(cell).removeView(cell); 2218 addInScreen(cell, container, screen, mTargetCell[0], mTargetCell[1], 2219 mDragInfo.spanX, mDragInfo.spanY); 2220 } 2221 2222 // update the item's position after drop 2223 final ItemInfo info = (ItemInfo) cell.getTag(); 2224 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2225 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 2226 lp.cellX = mTargetCell[0]; 2227 lp.cellY = mTargetCell[1]; 2228 cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screen, 2229 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2230 2231 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2232 cell instanceof LauncherAppWidgetHostView) { 2233 final CellLayout cellLayout = dropTargetLayout; 2234 // We post this call so that the widget has a chance to be placed 2235 // in its final location 2236 2237 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2238 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2239 if (pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2240 final Runnable resizeRunnable = new Runnable() { 2241 public void run() { 2242 DragLayer dragLayer = mLauncher.getDragLayer(); 2243 dragLayer.addResizeFrame(info, hostView, cellLayout); 2244 } 2245 }; 2246 post(new Runnable() { 2247 public void run() { 2248 if (!isPageMoving()) { 2249 resizeRunnable.run(); 2250 } else { 2251 mDelayedResizeRunnable = resizeRunnable; 2252 } 2253 } 2254 }); 2255 } 2256 } 2257 2258 LauncherModel.moveItemInDatabase(mLauncher, info, container, screen, lp.cellX, 2259 lp.cellY); 2260 } 2261 } 2262 2263 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2264 2265 // Prepare it to be animated into its new position 2266 // This must be called after the view has been re-parented 2267 final Runnable disableHardwareLayersRunnable = new Runnable() { 2268 @Override 2269 public void run() { 2270 mAnimatingViewIntoPlace = false; 2271 updateChildrenLayersEnabled(); 2272 } 2273 }; 2274 mAnimatingViewIntoPlace = true; 2275 if (d.dragView.hasDrawn()) { 2276 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2277 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2278 disableHardwareLayersRunnable, this); 2279 } else { 2280 d.deferDragViewCleanupPostAnimation = false; 2281 cell.setVisibility(VISIBLE); 2282 } 2283 parent.onDropChild(cell); 2284 } 2285 } 2286 2287 public void setFinalScrollForPageChange(int screen) { 2288 if (screen >= 0) { 2289 mSavedScrollX = getScrollX(); 2290 CellLayout cl = (CellLayout) getChildAt(screen); 2291 mSavedTranslationX = cl.getTranslationX(); 2292 mSavedRotationY = cl.getRotationY(); 2293 final int newX = getChildOffset(screen) - getRelativeChildOffset(screen); 2294 setScrollX(newX); 2295 cl.setTranslationX(0f); 2296 cl.setRotationY(0f); 2297 } 2298 } 2299 2300 public void resetFinalScrollForPageChange(int screen) { 2301 if (screen >= 0) { 2302 CellLayout cl = (CellLayout) getChildAt(screen); 2303 setScrollX(mSavedScrollX); 2304 cl.setTranslationX(mSavedTranslationX); 2305 cl.setRotationY(mSavedRotationY); 2306 } 2307 } 2308 2309 public void getViewLocationRelativeToSelf(View v, int[] location) { 2310 getLocationInWindow(location); 2311 int x = location[0]; 2312 int y = location[1]; 2313 2314 v.getLocationInWindow(location); 2315 int vX = location[0]; 2316 int vY = location[1]; 2317 2318 location[0] = vX - x; 2319 location[1] = vY - y; 2320 } 2321 2322 public void onDragEnter(DragObject d) { 2323 mDragHasEnteredWorkspace = true; 2324 if (mDragTargetLayout != null) { 2325 mDragTargetLayout.setIsDragOverlapping(false); 2326 mDragTargetLayout.onDragExit(); 2327 } 2328 mDragTargetLayout = getCurrentDropLayout(); 2329 mDragTargetLayout.setIsDragOverlapping(true); 2330 mDragTargetLayout.onDragEnter(); 2331 2332 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2333 // don't need to show the outlines 2334 if (LauncherApplication.isScreenLarge()) { 2335 showOutlines(); 2336 } 2337 } 2338 2339 private void doDragExit(DragObject d) { 2340 // Clean up folders 2341 cleanupFolderCreation(d); 2342 2343 // Reset the scroll area and previous drag target 2344 onResetScrollArea(); 2345 2346 if (mDragTargetLayout != null) { 2347 mDragTargetLayout.setIsDragOverlapping(false); 2348 mDragTargetLayout.onDragExit(); 2349 } 2350 mLastDragOverView = null; 2351 mSpringLoadedDragController.cancel(); 2352 2353 if (!mIsPageMoving) { 2354 hideOutlines(); 2355 } 2356 } 2357 2358 public void onDragExit(DragObject d) { 2359 mDragHasEnteredWorkspace = false; 2360 doDragExit(d); 2361 } 2362 2363 public DropTarget getDropTargetDelegate(DragObject d) { 2364 return null; 2365 } 2366 2367 /** 2368 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 2369 * in the returned structure related to the widgets that match the drop (or a null list if it is 2370 * a shortcut drop). If the drop is not accepted then a null structure is returned. 2371 */ 2372 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 2373 final LauncherModel model = mLauncher.getModel(); 2374 final ClipDescription desc = event.getClipDescription(); 2375 final int mimeTypeCount = desc.getMimeTypeCount(); 2376 for (int i = 0; i < mimeTypeCount; ++i) { 2377 final String mimeType = desc.getMimeType(i); 2378 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 2379 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 2380 } else { 2381 final List<WidgetMimeTypeHandlerData> widgets = 2382 model.resolveWidgetsForMimeType(mContext, mimeType); 2383 if (widgets.size() > 0) { 2384 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 2385 } 2386 } 2387 } 2388 return null; 2389 } 2390 2391 /** 2392 * Global drag and drop handler 2393 */ 2394 @Override 2395 public boolean onDragEvent(DragEvent event) { 2396 final ClipDescription desc = event.getClipDescription(); 2397 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 2398 final int[] pos = new int[2]; 2399 layout.getLocationOnScreen(pos); 2400 // We need to offset the drag coordinates to layout coordinate space 2401 final int x = (int) event.getX() - pos[0]; 2402 final int y = (int) event.getY() - pos[1]; 2403 2404 switch (event.getAction()) { 2405 case DragEvent.ACTION_DRAG_STARTED: { 2406 // Validate this drag 2407 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2408 if (test != null) { 2409 boolean isShortcut = (test.second == null); 2410 if (isShortcut) { 2411 // Check if we have enough space on this screen to add a new shortcut 2412 if (!layout.findCellForSpan(pos, 1, 1)) { 2413 mLauncher.showOutOfSpaceMessage(); 2414 return false; 2415 } 2416 } 2417 } else { 2418 // Show error message if we couldn't accept any of the items 2419 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 2420 Toast.LENGTH_SHORT).show(); 2421 return false; 2422 } 2423 2424 // Create the drag outline 2425 // We need to add extra padding to the bitmap to make room for the glow effect 2426 final Canvas canvas = new Canvas(); 2427 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2428 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 2429 2430 // Show the current page outlines to indicate that we can accept this drop 2431 showOutlines(); 2432 layout.onDragEnter(); 2433 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1, null, null); 2434 2435 return true; 2436 } 2437 case DragEvent.ACTION_DRAG_LOCATION: 2438 // Visualize the drop location 2439 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1, null, null); 2440 return true; 2441 case DragEvent.ACTION_DROP: { 2442 // Try and add any shortcuts 2443 final LauncherModel model = mLauncher.getModel(); 2444 final ClipData data = event.getClipData(); 2445 2446 // We assume that the mime types are ordered in descending importance of 2447 // representation. So we enumerate the list of mime types and alert the 2448 // user if any widgets can handle the drop. Only the most preferred 2449 // representation will be handled. 2450 pos[0] = x; 2451 pos[1] = y; 2452 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2453 if (test != null) { 2454 final int index = test.first; 2455 final List<WidgetMimeTypeHandlerData> widgets = test.second; 2456 final boolean isShortcut = (widgets == null); 2457 final String mimeType = desc.getMimeType(index); 2458 if (isShortcut) { 2459 final Intent intent = data.getItemAt(index).getIntent(); 2460 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 2461 if (info != null) { 2462 onDropExternal(new int[] { x, y }, info, layout, false); 2463 } 2464 } else { 2465 if (widgets.size() == 1) { 2466 // If there is only one item, then go ahead and add and configure 2467 // that widget 2468 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 2469 final PendingAddWidgetInfo createInfo = 2470 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 2471 mLauncher.addAppWidgetFromDrop(createInfo, 2472 LauncherSettings.Favorites.CONTAINER_DESKTOP, mCurrentPage, null, pos); 2473 } else { 2474 // Show the widget picker dialog if there is more than one widget 2475 // that can handle this data type 2476 final InstallWidgetReceiver.WidgetListAdapter adapter = 2477 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 2478 data, widgets, layout, mCurrentPage, pos); 2479 final AlertDialog.Builder builder = 2480 new AlertDialog.Builder(mContext); 2481 builder.setAdapter(adapter, adapter); 2482 builder.setCancelable(true); 2483 builder.setTitle(mContext.getString( 2484 R.string.external_drop_widget_pick_title)); 2485 builder.setIcon(R.drawable.ic_no_applications); 2486 builder.show(); 2487 } 2488 } 2489 } 2490 return true; 2491 } 2492 case DragEvent.ACTION_DRAG_ENDED: 2493 // Hide the page outlines after the drop 2494 layout.onDragExit(); 2495 hideOutlines(); 2496 return true; 2497 } 2498 return super.onDragEvent(event); 2499 } 2500 2501 /* 2502 * 2503 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2504 * coordinate space. The argument xy is modified with the return result. 2505 * 2506 */ 2507 void mapPointFromSelfToChild(View v, float[] xy) { 2508 mapPointFromSelfToChild(v, xy, null); 2509 } 2510 2511 /* 2512 * 2513 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2514 * coordinate space. The argument xy is modified with the return result. 2515 * 2516 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2517 * computing it itself; we use this to avoid redundant matrix inversions in 2518 * findMatchingPageForDragOver 2519 * 2520 */ 2521 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2522 if (cachedInverseMatrix == null) { 2523 v.getMatrix().invert(mTempInverseMatrix); 2524 cachedInverseMatrix = mTempInverseMatrix; 2525 } 2526 int scrollX = mScrollX; 2527 if (mNextPage != INVALID_PAGE) { 2528 scrollX = mScroller.getFinalX(); 2529 } 2530 xy[0] = xy[0] + scrollX - v.getLeft(); 2531 xy[1] = xy[1] + mScrollY - v.getTop(); 2532 cachedInverseMatrix.mapPoints(xy); 2533 } 2534 2535 /* 2536 * Maps a point from the Workspace's coordinate system to another sibling view's. (Workspace 2537 * covers the full screen) 2538 */ 2539 void mapPointFromSelfToSibling(View v, float[] xy) { 2540 xy[0] = xy[0] - v.getLeft(); 2541 xy[1] = xy[1] - v.getTop(); 2542 } 2543 2544 /* 2545 * 2546 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2547 * the parent View's coordinate space. The argument xy is modified with the return result. 2548 * 2549 */ 2550 void mapPointFromChildToSelf(View v, float[] xy) { 2551 v.getMatrix().mapPoints(xy); 2552 int scrollX = mScrollX; 2553 if (mNextPage != INVALID_PAGE) { 2554 scrollX = mScroller.getFinalX(); 2555 } 2556 xy[0] -= (scrollX - v.getLeft()); 2557 xy[1] -= (mScrollY - v.getTop()); 2558 } 2559 2560 static private float squaredDistance(float[] point1, float[] point2) { 2561 float distanceX = point1[0] - point2[0]; 2562 float distanceY = point2[1] - point2[1]; 2563 return distanceX * distanceX + distanceY * distanceY; 2564 } 2565 2566 /* 2567 * 2568 * Returns true if the passed CellLayout cl overlaps with dragView 2569 * 2570 */ 2571 boolean overlaps(CellLayout cl, DragView dragView, 2572 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2573 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2574 final float[] draggedItemTopLeft = mTempDragCoordinates; 2575 draggedItemTopLeft[0] = dragViewX; 2576 draggedItemTopLeft[1] = dragViewY; 2577 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2578 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2579 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2580 2581 // Transform the dragged item's top left coordinates 2582 // to the CellLayout's local coordinates 2583 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2584 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2585 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2586 2587 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2588 // Transform the dragged item's bottom right coordinates 2589 // to the CellLayout's local coordinates 2590 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2591 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2592 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2593 2594 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2595 float overlap = (overlapRegionRight - overlapRegionLeft) * 2596 (overlapRegionBottom - overlapRegionTop); 2597 if (overlap > 0) { 2598 return true; 2599 } 2600 } 2601 } 2602 return false; 2603 } 2604 2605 /* 2606 * 2607 * This method returns the CellLayout that is currently being dragged to. In order to drag 2608 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2609 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2610 * 2611 * Return null if no CellLayout is currently being dragged over 2612 * 2613 */ 2614 private CellLayout findMatchingPageForDragOver( 2615 DragView dragView, float originX, float originY, boolean exact) { 2616 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2617 // with the item being dragged and then choose the one that's closest to the touch point 2618 final int screenCount = getChildCount(); 2619 CellLayout bestMatchingScreen = null; 2620 float smallestDistSoFar = Float.MAX_VALUE; 2621 2622 for (int i = 0; i < screenCount; i++) { 2623 CellLayout cl = (CellLayout) getChildAt(i); 2624 2625 final float[] touchXy = {originX, originY}; 2626 // Transform the touch coordinates to the CellLayout's local coordinates 2627 // If the touch point is within the bounds of the cell layout, we can return immediately 2628 cl.getMatrix().invert(mTempInverseMatrix); 2629 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2630 2631 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2632 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2633 return cl; 2634 } 2635 2636 if (!exact) { 2637 // Get the center of the cell layout in screen coordinates 2638 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2639 cellLayoutCenter[0] = cl.getWidth()/2; 2640 cellLayoutCenter[1] = cl.getHeight()/2; 2641 mapPointFromChildToSelf(cl, cellLayoutCenter); 2642 2643 touchXy[0] = originX; 2644 touchXy[1] = originY; 2645 2646 // Calculate the distance between the center of the CellLayout 2647 // and the touch point 2648 float dist = squaredDistance(touchXy, cellLayoutCenter); 2649 2650 if (dist < smallestDistSoFar) { 2651 smallestDistSoFar = dist; 2652 bestMatchingScreen = cl; 2653 } 2654 } 2655 } 2656 return bestMatchingScreen; 2657 } 2658 2659 // This is used to compute the visual center of the dragView. This point is then 2660 // used to visualize drop locations and determine where to drop an item. The idea is that 2661 // the visual center represents the user's interpretation of where the item is, and hence 2662 // is the appropriate point to use when determining drop location. 2663 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2664 DragView dragView, float[] recycle) { 2665 float res[]; 2666 if (recycle == null) { 2667 res = new float[2]; 2668 } else { 2669 res = recycle; 2670 } 2671 2672 // First off, the drag view has been shifted in a way that is not represented in the 2673 // x and y values or the x/yOffsets. Here we account for that shift. 2674 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2675 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2676 2677 // These represent the visual top and left of drag view if a dragRect was provided. 2678 // If a dragRect was not provided, then they correspond to the actual view left and 2679 // top, as the dragRect is in that case taken to be the entire dragView. 2680 // R.dimen.dragViewOffsetY. 2681 int left = x - xOffset; 2682 int top = y - yOffset; 2683 2684 // In order to find the visual center, we shift by half the dragRect 2685 res[0] = left + dragView.getDragRegion().width() / 2; 2686 res[1] = top + dragView.getDragRegion().height() / 2; 2687 2688 return res; 2689 } 2690 2691 private boolean isDragWidget(DragObject d) { 2692 return (d.dragInfo instanceof LauncherAppWidgetInfo || 2693 d.dragInfo instanceof PendingAddWidgetInfo); 2694 } 2695 private boolean isExternalDragWidget(DragObject d) { 2696 return d.dragSource != this && isDragWidget(d); 2697 } 2698 2699 public void onDragOver(DragObject d) { 2700 // Skip drag over events while we are dragging over side pages 2701 if (mInScrollArea || mIsSwitchingState || mState == State.SMALL) return; 2702 2703 Rect r = new Rect(); 2704 CellLayout layout = null; 2705 ItemInfo item = (ItemInfo) d.dragInfo; 2706 2707 // Ensure that we have proper spans for the item that we are dropping 2708 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2709 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2710 d.dragView, mDragViewVisualCenter); 2711 2712 // Identify whether we have dragged over a side page 2713 if (isSmall()) { 2714 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 2715 mLauncher.getHotseat().getHitRect(r); 2716 if (r.contains(d.x, d.y)) { 2717 layout = mLauncher.getHotseat().getLayout(); 2718 } 2719 } 2720 if (layout == null) { 2721 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false); 2722 } 2723 if (layout != mDragTargetLayout) { 2724 // Cancel all intermediate folder states 2725 cleanupFolderCreation(d); 2726 2727 if (mDragTargetLayout != null) { 2728 mDragTargetLayout.setIsDragOverlapping(false); 2729 mDragTargetLayout.onDragExit(); 2730 } 2731 mDragTargetLayout = layout; 2732 if (mDragTargetLayout != null) { 2733 mDragTargetLayout.setIsDragOverlapping(true); 2734 mDragTargetLayout.onDragEnter(); 2735 } else { 2736 mLastDragOverView = null; 2737 } 2738 2739 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 2740 if (isInSpringLoadedMode) { 2741 if (mLauncher.isHotseatLayout(layout)) { 2742 mSpringLoadedDragController.cancel(); 2743 } else { 2744 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2745 } 2746 } 2747 } 2748 } else { 2749 // Test to see if we are over the hotseat otherwise just use the current page 2750 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 2751 mLauncher.getHotseat().getHitRect(r); 2752 if (r.contains(d.x, d.y)) { 2753 layout = mLauncher.getHotseat().getLayout(); 2754 } 2755 } 2756 if (layout == null) { 2757 layout = getCurrentDropLayout(); 2758 } 2759 if (layout != mDragTargetLayout) { 2760 if (mDragTargetLayout != null) { 2761 mDragTargetLayout.setIsDragOverlapping(false); 2762 mDragTargetLayout.onDragExit(); 2763 } 2764 mDragTargetLayout = layout; 2765 mDragTargetLayout.setIsDragOverlapping(true); 2766 mDragTargetLayout.onDragEnter(); 2767 } 2768 } 2769 2770 // Handle the drag over 2771 if (mDragTargetLayout != null) { 2772 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2773 2774 // We want the point to be mapped to the dragTarget. 2775 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2776 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2777 } else { 2778 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2779 } 2780 ItemInfo info = (ItemInfo) d.dragInfo; 2781 2782 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2783 (int) mDragViewVisualCenter[1], 1, 1, mDragTargetLayout, mTargetCell); 2784 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2785 mTargetCell[1]); 2786 2787 boolean userFolderPending = willCreateUserFolder(info, mDragTargetLayout, 2788 mTargetCell, false); 2789 boolean isOverFolder = dragOverView instanceof FolderIcon; 2790 if (dragOverView != mLastDragOverView) { 2791 cancelFolderCreation(); 2792 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2793 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2794 } 2795 } 2796 2797 if (userFolderPending && dragOverView != mLastDragOverView) { 2798 mFolderCreationAlarm.setOnAlarmListener(new 2799 FolderCreationAlarmListener(mDragTargetLayout, mTargetCell[0], mTargetCell[1])); 2800 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2801 } 2802 2803 if (dragOverView != mLastDragOverView && isOverFolder) { 2804 ((FolderIcon) dragOverView).onDragEnter(d.dragInfo); 2805 if (mDragTargetLayout != null) { 2806 mDragTargetLayout.clearDragOutlines(); 2807 } 2808 } 2809 mLastDragOverView = dragOverView; 2810 2811 if (!mCreateUserFolderOnDrop && !isOverFolder) { 2812 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2813 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2814 item.spanX, item.spanY, d.dragView.getDragVisualizeOffset(), 2815 d.dragView.getDragRegion()); 2816 } 2817 } 2818 } 2819 2820 private void cleanupFolderCreation(DragObject d) { 2821 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2822 mDragFolderRingAnimator.animateToNaturalState(); 2823 } 2824 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2825 if (d != null) { 2826 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2827 } 2828 } 2829 mFolderCreationAlarm.cancelAlarm(); 2830 } 2831 2832 private void cancelFolderCreation() { 2833 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2834 mDragFolderRingAnimator.animateToNaturalState(); 2835 } 2836 mCreateUserFolderOnDrop = false; 2837 mFolderCreationAlarm.cancelAlarm(); 2838 } 2839 2840 class FolderCreationAlarmListener implements OnAlarmListener { 2841 CellLayout layout; 2842 int cellX; 2843 int cellY; 2844 2845 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 2846 this.layout = layout; 2847 this.cellX = cellX; 2848 this.cellY = cellY; 2849 } 2850 2851 public void onAlarm(Alarm alarm) { 2852 if (mDragFolderRingAnimator == null) { 2853 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 2854 } 2855 mDragFolderRingAnimator.setCell(cellX, cellY); 2856 mDragFolderRingAnimator.setCellLayout(layout); 2857 mDragFolderRingAnimator.animateToAcceptState(); 2858 layout.showFolderAccept(mDragFolderRingAnimator); 2859 layout.clearDragOutlines(); 2860 mCreateUserFolderOnDrop = true; 2861 } 2862 } 2863 2864 @Override 2865 public void getHitRect(Rect outRect) { 2866 // We want the workspace to have the whole area of the display (it will find the correct 2867 // cell layout to drop to in the existing drag/drop logic. 2868 outRect.set(0, 0, mDisplayWidth, mDisplayHeight); 2869 } 2870 2871 /** 2872 * Add the item specified by dragInfo to the given layout. 2873 * @return true if successful 2874 */ 2875 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2876 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2877 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2878 return true; 2879 } 2880 mLauncher.showOutOfSpaceMessage(); 2881 return false; 2882 } 2883 2884 private void onDropExternal(int[] touchXY, Object dragInfo, 2885 CellLayout cellLayout, boolean insertAtFirst) { 2886 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 2887 } 2888 2889 /** 2890 * Drop an item that didn't originate on one of the workspace screens. 2891 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2892 * come from another app altogether. 2893 * 2894 * NOTE: This can also be called when we are outside of a drag event, when we want 2895 * to add an item to one of the workspace screens. 2896 */ 2897 private void onDropExternal(final int[] touchXY, final Object dragInfo, 2898 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 2899 final Runnable exitSpringLoadedRunnable = new Runnable() { 2900 @Override 2901 public void run() { 2902 mLauncher.exitSpringLoadedDragModeDelayed(true, false, null); 2903 } 2904 }; 2905 2906 ItemInfo info = (ItemInfo) dragInfo; 2907 int spanX = info.spanX; 2908 int spanY = info.spanY; 2909 if (mDragInfo != null) { 2910 spanX = mDragInfo.spanX; 2911 spanY = mDragInfo.spanY; 2912 } 2913 2914 final long container = mLauncher.isHotseatLayout(cellLayout) ? 2915 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2916 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2917 final int screen = indexOfChild(cellLayout); 2918 if (!mLauncher.isHotseatLayout(cellLayout) && screen != mCurrentPage 2919 && mState != State.SPRING_LOADED) { 2920 snapToPage(screen); 2921 } 2922 2923 if (info instanceof PendingAddItemInfo) { 2924 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 2925 2926 boolean findNearestVacantCell = true; 2927 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 2928 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 2929 cellLayout, mTargetCell); 2930 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, 2931 true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 2932 mDragTargetLayout, mTargetCell)) { 2933 findNearestVacantCell = false; 2934 } 2935 } 2936 if (findNearestVacantCell) { 2937 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], spanX, spanY, null, 2938 cellLayout, mTargetCell); 2939 } 2940 2941 Runnable onAnimationCompleteRunnable = new Runnable() { 2942 @Override 2943 public void run() { 2944 // When dragging and dropping from customization tray, we deal with creating 2945 // widgets/shortcuts/folders in a slightly different way 2946 switch (pendingInfo.itemType) { 2947 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 2948 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, 2949 container, screen, mTargetCell, null); 2950 break; 2951 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2952 mLauncher.processShortcutFromDrop(pendingInfo.componentName, 2953 container, screen, mTargetCell, null); 2954 break; 2955 default: 2956 throw new IllegalStateException("Unknown item type: " + 2957 pendingInfo.itemType); 2958 } 2959 cellLayout.onDragExit(); 2960 } 2961 }; 2962 2963 animateExternalDrop((PendingAddItemInfo) info, cellLayout, d.dragView, 2964 onAnimationCompleteRunnable, ANIMATE_INTO_POSITION); 2965 } else { 2966 // This is for other drag/drop cases, like dragging from All Apps 2967 View view = null; 2968 2969 switch (info.itemType) { 2970 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 2971 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2972 if (info.container == NO_ID && info instanceof ApplicationInfo) { 2973 // Came from all apps -- make a copy 2974 info = new ShortcutInfo((ApplicationInfo) info); 2975 } 2976 view = mLauncher.createShortcut(R.layout.application, cellLayout, 2977 (ShortcutInfo) info); 2978 break; 2979 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 2980 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 2981 (FolderInfo) info, mIconCache); 2982 break; 2983 default: 2984 throw new IllegalStateException("Unknown item type: " + info.itemType); 2985 } 2986 2987 // First we find the cell nearest to point at which the item is 2988 // dropped, without any consideration to whether there is an item there. 2989 if (touchXY != null) { 2990 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 2991 cellLayout, mTargetCell); 2992 d.postAnimationRunnable = exitSpringLoadedRunnable; 2993 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, true, 2994 d.dragView, d.postAnimationRunnable)) { 2995 return; 2996 } 2997 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, d, true)) { 2998 return; 2999 } 3000 } 3001 3002 if (touchXY != null) { 3003 // when dragging and dropping, just find the closest free spot 3004 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], 1, 1, null, 3005 cellLayout, mTargetCell); 3006 } else { 3007 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3008 } 3009 addInScreen(view, container, screen, mTargetCell[0], mTargetCell[1], info.spanX, 3010 info.spanY, insertAtFirst); 3011 cellLayout.onDropChild(view); 3012 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 3013 cellLayout.getChildrenLayout().measureChild(view); 3014 3015 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, 3016 lp.cellX, lp.cellY); 3017 3018 if (d.dragView != null) { 3019 // We wrap the animation call in the temporary set and reset of the current 3020 // cellLayout to its final transform -- this means we animate the drag view to 3021 // the correct final location. 3022 setFinalTransitionTransform(cellLayout); 3023 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 3024 exitSpringLoadedRunnable); 3025 resetTransitionTransform(cellLayout); 3026 } 3027 } 3028 } 3029 3030 public Bitmap createWidgetBitmap(PendingAddWidgetInfo widgetInfo) { 3031 int[] unScaledSize = mLauncher.getWorkspace().estimateItemSize(widgetInfo.spanX, 3032 widgetInfo.spanY, widgetInfo, false); 3033 View layout = widgetInfo.boundWidget; 3034 mLauncher.getDragLayer().removeView(layout); 3035 layout.setVisibility(VISIBLE); 3036 3037 int width = MeasureSpec.makeMeasureSpec(unScaledSize[0], MeasureSpec.EXACTLY); 3038 int height = MeasureSpec.makeMeasureSpec(unScaledSize[1], MeasureSpec.EXACTLY); 3039 Bitmap b = Bitmap.createBitmap(unScaledSize[0], unScaledSize[1], 3040 Bitmap.Config.ARGB_8888); 3041 Canvas c = new Canvas(b); 3042 3043 layout.measure(width, height); 3044 layout.layout(0, 0, unScaledSize[0], unScaledSize[1]); 3045 layout.draw(c); 3046 c.setBitmap(null); 3047 return b; 3048 } 3049 3050 public void animateExternalDrop(PendingAddItemInfo pendingInfo, CellLayout cellLayout, 3051 DragView dragView, Runnable onCompleteRunnable, int animationType) { 3052 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 3053 // location and size on the home screen. 3054 int spanX = pendingInfo.spanX; 3055 int spanY = pendingInfo.spanY; 3056 RectF r = estimateItemPosition(cellLayout, pendingInfo, 3057 mTargetCell[0], mTargetCell[1], spanX, spanY); 3058 int loc[] = new int[2]; 3059 loc[0] = (int) r.left; 3060 loc[1] = (int) r.top; 3061 setFinalTransitionTransform(cellLayout); 3062 float cellLayoutScale = 3063 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(cellLayout, loc); 3064 resetTransitionTransform(cellLayout); 3065 3066 float dragViewScaleX = r.width() / dragView.getMeasuredWidth(); 3067 float dragViewScaleY = r.height() / dragView.getMeasuredHeight(); 3068 // The animation will scale the dragView about its center, so we need to center about 3069 // the final location. 3070 loc[0] -= (dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 3071 loc[1] -= (dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 3072 3073 float scaleX = dragViewScaleX * cellLayoutScale; 3074 float scaleY = dragViewScaleY * cellLayoutScale; 3075 3076 Resources res = mLauncher.getResources(); 3077 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration) - 200; 3078 3079 int animationEnd = DragLayer.ANIMATION_END_REMAIN_VISIBLE; 3080 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && 3081 (((PendingAddWidgetInfo) pendingInfo).info.configure == null || 3082 animationType == COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION)) { 3083 Bitmap crossFadeBitmap = createWidgetBitmap((PendingAddWidgetInfo) pendingInfo); 3084 dragView.setCrossFadeBitmap(crossFadeBitmap); 3085 dragView.crossFade((int) (duration * 0.8f)); 3086 animationEnd = DragLayer.ANIMATION_END_DISAPPEAR; 3087 } else { 3088 scaleX = scaleY = Math.min(scaleX, scaleY); 3089 } 3090 3091 if (animationType == CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION) { 3092 mLauncher.getDragLayer().animateViewIntoPosition(dragView, loc, 0f, 0.1f, 0.1f, 3093 DragLayer.ANIMATION_END_DISAPPEAR, onCompleteRunnable, duration); 3094 } else { 3095 mLauncher.getDragLayer().animateViewIntoPosition(dragView, loc, 1f, scaleX, scaleY, 3096 animationEnd, onCompleteRunnable, duration); 3097 } 3098 } 3099 3100 public void setFinalTransitionTransform(CellLayout layout) { 3101 if (isSwitchingState()) { 3102 int index = indexOfChild(layout); 3103 mCurrentScaleX = layout.getScaleX(); 3104 mCurrentScaleY = layout.getScaleY(); 3105 mCurrentTranslationX = layout.getTranslationX(); 3106 mCurrentTranslationY = layout.getTranslationY(); 3107 mCurrentRotationY = layout.getRotationY(); 3108 layout.setScaleX(mNewScaleXs[index]); 3109 layout.setScaleY(mNewScaleYs[index]); 3110 layout.setTranslationX(mNewTranslationXs[index]); 3111 layout.setTranslationY(mNewTranslationYs[index]); 3112 layout.setRotationY(mNewRotationYs[index]); 3113 } 3114 } 3115 public void resetTransitionTransform(CellLayout layout) { 3116 if (isSwitchingState()) { 3117 mCurrentScaleX = layout.getScaleX(); 3118 mCurrentScaleY = layout.getScaleY(); 3119 mCurrentTranslationX = layout.getTranslationX(); 3120 mCurrentTranslationY = layout.getTranslationY(); 3121 mCurrentRotationY = layout.getRotationY(); 3122 layout.setScaleX(mCurrentScaleX); 3123 layout.setScaleY(mCurrentScaleY); 3124 layout.setTranslationX(mCurrentTranslationX); 3125 layout.setTranslationY(mCurrentTranslationY); 3126 layout.setRotationY(mCurrentRotationY); 3127 } 3128 } 3129 3130 /** 3131 * Return the current {@link CellLayout}, correctly picking the destination 3132 * screen while a scroll is in progress. 3133 */ 3134 public CellLayout getCurrentDropLayout() { 3135 return (CellLayout) getChildAt(mNextPage == INVALID_PAGE ? mCurrentPage : mNextPage); 3136 } 3137 3138 /** 3139 * Return the current CellInfo describing our current drag; this method exists 3140 * so that Launcher can sync this object with the correct info when the activity is created/ 3141 * destroyed 3142 * 3143 */ 3144 public CellLayout.CellInfo getDragInfo() { 3145 return mDragInfo; 3146 } 3147 3148 /** 3149 * Calculate the nearest cell where the given object would be dropped. 3150 * 3151 * pixelX and pixelY should be in the coordinate system of layout 3152 */ 3153 private int[] findNearestVacantArea(int pixelX, int pixelY, 3154 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 3155 return layout.findNearestVacantArea( 3156 pixelX, pixelY, spanX, spanY, ignoreView, recycle); 3157 } 3158 3159 /** 3160 * Calculate the nearest cell where the given object would be dropped. 3161 * 3162 * pixelX and pixelY should be in the coordinate system of layout 3163 */ 3164 private int[] findNearestArea(int pixelX, int pixelY, 3165 int spanX, int spanY, CellLayout layout, int[] recycle) { 3166 return layout.findNearestArea( 3167 pixelX, pixelY, spanX, spanY, recycle); 3168 } 3169 3170 void setup(DragController dragController) { 3171 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3172 mDragController = dragController; 3173 3174 // hardware layers on children are enabled on startup, but should be disabled until 3175 // needed 3176 updateChildrenLayersEnabled(); 3177 setWallpaperDimension(); 3178 } 3179 3180 /** 3181 * Called at the end of a drag which originated on the workspace. 3182 */ 3183 public void onDropCompleted(View target, DragObject d, boolean success) { 3184 if (success) { 3185 if (target != this) { 3186 if (mDragInfo != null) { 3187 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 3188 if (mDragInfo.cell instanceof DropTarget) { 3189 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 3190 } 3191 } 3192 } 3193 } else if (mDragInfo != null) { 3194 // NOTE: When 'success' is true, onDragExit is called by the DragController before 3195 // calling onDropCompleted(). We call it ourselves here, but maybe this should be 3196 // moved into DragController.cancelDrag(). 3197 doDragExit(null); 3198 CellLayout cellLayout; 3199 if (mLauncher.isHotseatLayout(target)) { 3200 cellLayout = mLauncher.getHotseat().getLayout(); 3201 } else { 3202 cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3203 } 3204 cellLayout.onDropChild(mDragInfo.cell); 3205 } 3206 if (d.cancelled && mDragInfo.cell != null) { 3207 mDragInfo.cell.setVisibility(VISIBLE); 3208 } 3209 mDragOutline = null; 3210 mDragInfo = null; 3211 3212 // Hide the scrolling indicator after you pick up an item 3213 hideScrollingIndicator(false); 3214 } 3215 3216 public boolean isDropEnabled() { 3217 return true; 3218 } 3219 3220 @Override 3221 protected void onRestoreInstanceState(Parcelable state) { 3222 super.onRestoreInstanceState(state); 3223 Launcher.setScreen(mCurrentPage); 3224 } 3225 3226 @Override 3227 public void scrollLeft() { 3228 if (!isSmall() && !mIsSwitchingState) { 3229 super.scrollLeft(); 3230 } 3231 Folder openFolder = getOpenFolder(); 3232 if (openFolder != null) { 3233 openFolder.completeDragExit(); 3234 } 3235 } 3236 3237 @Override 3238 public void scrollRight() { 3239 if (!isSmall() && !mIsSwitchingState) { 3240 super.scrollRight(); 3241 } 3242 Folder openFolder = getOpenFolder(); 3243 if (openFolder != null) { 3244 openFolder.completeDragExit(); 3245 } 3246 } 3247 3248 @Override 3249 public boolean onEnterScrollArea(int x, int y, int direction) { 3250 // Ignore the scroll area if we are dragging over the hot seat 3251 if (mLauncher.getHotseat() != null) { 3252 Rect r = new Rect(); 3253 mLauncher.getHotseat().getHitRect(r); 3254 if (r.contains(x, y)) { 3255 return false; 3256 } 3257 } 3258 3259 boolean result = false; 3260 if (!isSmall() && !mIsSwitchingState) { 3261 mInScrollArea = true; 3262 3263 final int page = (mNextPage != INVALID_PAGE ? mNextPage : mCurrentPage) + 3264 (direction == DragController.SCROLL_LEFT ? -1 : 1); 3265 cancelFolderCreation(); 3266 3267 if (0 <= page && page < getChildCount()) { 3268 CellLayout layout = (CellLayout) getChildAt(page); 3269 // Exit the current layout and mark the overlapping layout 3270 if (mDragTargetLayout != null) { 3271 mDragTargetLayout.setIsDragOverlapping(false); 3272 mDragTargetLayout.onDragExit(); 3273 } 3274 mDragTargetLayout = layout; 3275 mDragTargetLayout.setIsDragOverlapping(true); 3276 3277 // Workspace is responsible for drawing the edge glow on adjacent pages, 3278 // so we need to redraw the workspace when this may have changed. 3279 invalidate(); 3280 result = true; 3281 } 3282 } 3283 return result; 3284 } 3285 3286 @Override 3287 public boolean onExitScrollArea() { 3288 boolean result = false; 3289 if (mInScrollArea) { 3290 if (mDragTargetLayout != null) { 3291 mDragTargetLayout.setIsDragOverlapping(false); 3292 // Workspace is responsible for drawing the edge glow on adjacent pages, 3293 // so we need to redraw the workspace when this may have changed. 3294 invalidate(); 3295 } 3296 if (mDragTargetLayout != null && mDragHasEnteredWorkspace) { 3297 // Unmark the overlapping layout and re-enter the current layout 3298 mDragTargetLayout = getCurrentDropLayout(); 3299 mDragTargetLayout.onDragEnter(); 3300 } 3301 result = true; 3302 mInScrollArea = false; 3303 } 3304 return result; 3305 } 3306 3307 private void onResetScrollArea() { 3308 if (mDragTargetLayout != null) { 3309 // Unmark the overlapping layout 3310 mDragTargetLayout.setIsDragOverlapping(false); 3311 3312 // Workspace is responsible for drawing the edge glow on adjacent pages, 3313 // so we need to redraw the workspace when this may have changed. 3314 invalidate(); 3315 } 3316 mInScrollArea = false; 3317 } 3318 3319 /** 3320 * Returns a specific CellLayout 3321 */ 3322 CellLayout getParentCellLayoutForView(View v) { 3323 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3324 for (CellLayout layout : layouts) { 3325 if (layout.getChildrenLayout().indexOfChild(v) > -1) { 3326 return layout; 3327 } 3328 } 3329 return null; 3330 } 3331 3332 /** 3333 * Returns a list of all the CellLayouts in the workspace. 3334 */ 3335 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3336 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3337 int screenCount = getChildCount(); 3338 for (int screen = 0; screen < screenCount; screen++) { 3339 layouts.add(((CellLayout) getChildAt(screen))); 3340 } 3341 if (mLauncher.getHotseat() != null) { 3342 layouts.add(mLauncher.getHotseat().getLayout()); 3343 } 3344 return layouts; 3345 } 3346 3347 /** 3348 * We should only use this to search for specific children. Do not use this method to modify 3349 * CellLayoutChildren directly. 3350 */ 3351 ArrayList<CellLayoutChildren> getWorkspaceAndHotseatCellLayoutChildren() { 3352 ArrayList<CellLayoutChildren> childrenLayouts = new ArrayList<CellLayoutChildren>(); 3353 int screenCount = getChildCount(); 3354 for (int screen = 0; screen < screenCount; screen++) { 3355 childrenLayouts.add(((CellLayout) getChildAt(screen)).getChildrenLayout()); 3356 } 3357 if (mLauncher.getHotseat() != null) { 3358 childrenLayouts.add(mLauncher.getHotseat().getLayout().getChildrenLayout()); 3359 } 3360 return childrenLayouts; 3361 } 3362 3363 public Folder getFolderForTag(Object tag) { 3364 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3365 for (CellLayoutChildren layout: childrenLayouts) { 3366 int count = layout.getChildCount(); 3367 for (int i = 0; i < count; i++) { 3368 View child = layout.getChildAt(i); 3369 if (child instanceof Folder) { 3370 Folder f = (Folder) child; 3371 if (f.getInfo() == tag && f.getInfo().opened) { 3372 return f; 3373 } 3374 } 3375 } 3376 } 3377 return null; 3378 } 3379 3380 public View getViewForTag(Object tag) { 3381 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3382 for (CellLayoutChildren layout: childrenLayouts) { 3383 int count = layout.getChildCount(); 3384 for (int i = 0; i < count; i++) { 3385 View child = layout.getChildAt(i); 3386 if (child.getTag() == tag) { 3387 return child; 3388 } 3389 } 3390 } 3391 return null; 3392 } 3393 3394 void clearDropTargets() { 3395 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3396 for (CellLayoutChildren layout: childrenLayouts) { 3397 int childCount = layout.getChildCount(); 3398 for (int j = 0; j < childCount; j++) { 3399 View v = layout.getChildAt(j); 3400 if (v instanceof DropTarget) { 3401 mDragController.removeDropTarget((DropTarget) v); 3402 } 3403 } 3404 } 3405 } 3406 3407 void removeItems(final ArrayList<ApplicationInfo> apps) { 3408 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3409 3410 final HashSet<String> packageNames = new HashSet<String>(); 3411 final int appCount = apps.size(); 3412 for (int i = 0; i < appCount; i++) { 3413 packageNames.add(apps.get(i).componentName.getPackageName()); 3414 } 3415 3416 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3417 for (final CellLayout layoutParent: cellLayouts) { 3418 final ViewGroup layout = layoutParent.getChildrenLayout(); 3419 3420 // Avoid ANRs by treating each screen separately 3421 post(new Runnable() { 3422 public void run() { 3423 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3424 childrenToRemove.clear(); 3425 3426 int childCount = layout.getChildCount(); 3427 for (int j = 0; j < childCount; j++) { 3428 final View view = layout.getChildAt(j); 3429 Object tag = view.getTag(); 3430 3431 if (tag instanceof ShortcutInfo) { 3432 final ShortcutInfo info = (ShortcutInfo) tag; 3433 final Intent intent = info.intent; 3434 final ComponentName name = intent.getComponent(); 3435 3436 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3437 for (String packageName: packageNames) { 3438 if (packageName.equals(name.getPackageName())) { 3439 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3440 childrenToRemove.add(view); 3441 } 3442 } 3443 } 3444 } else if (tag instanceof FolderInfo) { 3445 final FolderInfo info = (FolderInfo) tag; 3446 final ArrayList<ShortcutInfo> contents = info.contents; 3447 final int contentsCount = contents.size(); 3448 final ArrayList<ShortcutInfo> appsToRemoveFromFolder = 3449 new ArrayList<ShortcutInfo>(); 3450 3451 for (int k = 0; k < contentsCount; k++) { 3452 final ShortcutInfo appInfo = contents.get(k); 3453 final Intent intent = appInfo.intent; 3454 final ComponentName name = intent.getComponent(); 3455 3456 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3457 for (String packageName: packageNames) { 3458 if (packageName.equals(name.getPackageName())) { 3459 appsToRemoveFromFolder.add(appInfo); 3460 } 3461 } 3462 } 3463 } 3464 for (ShortcutInfo item: appsToRemoveFromFolder) { 3465 info.remove(item); 3466 LauncherModel.deleteItemFromDatabase(mLauncher, item); 3467 } 3468 } else if (tag instanceof LauncherAppWidgetInfo) { 3469 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3470 final AppWidgetProviderInfo provider = 3471 widgets.getAppWidgetInfo(info.appWidgetId); 3472 if (provider != null) { 3473 for (String packageName: packageNames) { 3474 if (packageName.equals(provider.provider.getPackageName())) { 3475 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3476 childrenToRemove.add(view); 3477 } 3478 } 3479 } 3480 } 3481 } 3482 3483 childCount = childrenToRemove.size(); 3484 for (int j = 0; j < childCount; j++) { 3485 View child = childrenToRemove.get(j); 3486 // Note: We can not remove the view directly from CellLayoutChildren as this 3487 // does not re-mark the spaces as unoccupied. 3488 layoutParent.removeViewInLayout(child); 3489 if (child instanceof DropTarget) { 3490 mDragController.removeDropTarget((DropTarget)child); 3491 } 3492 } 3493 3494 if (childCount > 0) { 3495 layout.requestLayout(); 3496 layout.invalidate(); 3497 } 3498 } 3499 }); 3500 } 3501 } 3502 3503 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3504 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3505 for (CellLayoutChildren layout: childrenLayouts) { 3506 int childCount = layout.getChildCount(); 3507 for (int j = 0; j < childCount; j++) { 3508 final View view = layout.getChildAt(j); 3509 Object tag = view.getTag(); 3510 if (tag instanceof ShortcutInfo) { 3511 ShortcutInfo info = (ShortcutInfo)tag; 3512 // We need to check for ACTION_MAIN otherwise getComponent() might 3513 // return null for some shortcuts (for instance, for shortcuts to 3514 // web pages.) 3515 final Intent intent = info.intent; 3516 final ComponentName name = intent.getComponent(); 3517 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3518 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3519 final int appCount = apps.size(); 3520 for (int k = 0; k < appCount; k++) { 3521 ApplicationInfo app = apps.get(k); 3522 if (app.componentName.equals(name)) { 3523 info.setIcon(mIconCache.getIcon(info.intent)); 3524 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 3525 new FastBitmapDrawable(info.getIcon(mIconCache)), 3526 null, null); 3527 } 3528 } 3529 } 3530 } 3531 } 3532 } 3533 } 3534 3535 void moveToDefaultScreen(boolean animate) { 3536 if (!isSmall()) { 3537 if (animate) { 3538 snapToPage(mDefaultPage); 3539 } else { 3540 setCurrentPage(mDefaultPage); 3541 } 3542 } 3543 getChildAt(mDefaultPage).requestFocus(); 3544 } 3545 3546 @Override 3547 public void syncPages() { 3548 } 3549 3550 @Override 3551 public void syncPageItems(int page, boolean immediate) { 3552 } 3553 3554 @Override 3555 protected String getCurrentPageDescription() { 3556 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 3557 return String.format(mContext.getString(R.string.workspace_scroll_format), 3558 page + 1, getChildCount()); 3559 } 3560 3561 public void getLocationInDragLayer(int[] loc) { 3562 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 3563 } 3564 3565 void setFadeForOverScroll(float fade) { 3566 if (!isScrollingIndicatorEnabled()) return; 3567 3568 mOverscrollFade = fade; 3569 float reducedFade = 0.5f + 0.5f * (1 - fade); 3570 final ViewGroup parent = (ViewGroup) getParent(); 3571 final ImageView qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3572 final ImageView dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3573 final View scrollIndicator = getScrollingIndicator(); 3574 3575 cancelScrollingIndicatorAnimations(); 3576 if (qsbDivider != null) qsbDivider.setAlpha(reducedFade); 3577 if (dockDivider != null) dockDivider.setAlpha(reducedFade); 3578 scrollIndicator.setAlpha(1 - fade); 3579 } 3580} 3581