Workspace.java revision b60fd0eafbb4e6e61b429c403f024dc903bc483a
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.launcher2; 18 19import android.animation.Animator; 20import android.animation.Animator.AnimatorListener; 21import android.animation.AnimatorListenerAdapter; 22import android.animation.AnimatorSet; 23import android.animation.ObjectAnimator; 24import android.animation.TimeInterpolator; 25import android.animation.ValueAnimator; 26import android.animation.ValueAnimator.AnimatorUpdateListener; 27import android.app.AlertDialog; 28import android.app.WallpaperManager; 29import android.appwidget.AppWidgetManager; 30import android.appwidget.AppWidgetProviderInfo; 31import android.content.ClipData; 32import android.content.ClipDescription; 33import android.content.ComponentName; 34import android.content.Context; 35import android.content.Intent; 36import android.content.res.Resources; 37import android.content.res.TypedArray; 38import android.graphics.Bitmap; 39import android.graphics.Camera; 40import android.graphics.Canvas; 41import android.graphics.Matrix; 42import android.graphics.Paint; 43import android.graphics.PorterDuff; 44import android.graphics.Rect; 45import android.graphics.RectF; 46import android.graphics.Region.Op; 47import android.graphics.drawable.Drawable; 48import android.os.IBinder; 49import android.os.Parcelable; 50import android.util.AttributeSet; 51import android.util.DisplayMetrics; 52import android.util.Log; 53import android.util.Pair; 54import android.view.Display; 55import android.view.DragEvent; 56import android.view.MotionEvent; 57import android.view.View; 58import android.view.ViewGroup; 59import android.view.animation.DecelerateInterpolator; 60import android.widget.ImageView; 61import android.widget.TextView; 62import android.widget.Toast; 63 64import com.android.launcher.R; 65import com.android.launcher2.FolderIcon.FolderRingAnimator; 66import com.android.launcher2.InstallWidgetReceiver.WidgetMimeTypeHandlerData; 67 68import java.util.ArrayList; 69import java.util.HashSet; 70import java.util.List; 71 72/** 73 * The workspace is a wide area with a wallpaper and a finite number of pages. 74 * Each page contains a number of icons, folders or widgets the user can 75 * interact with. A workspace is meant to be used with a fixed width only. 76 */ 77public class Workspace extends SmoothPagedView 78 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 79 DragController.DragListener { 80 @SuppressWarnings({"UnusedDeclaration"}) 81 private static final String TAG = "Launcher.Workspace"; 82 83 // Y rotation to apply to the workspace screens 84 private static final float WORKSPACE_ROTATION = 12.5f; 85 86 // These are extra scale factors to apply to the mini home screens 87 // so as to achieve the desired transform 88 private static final float EXTRA_SCALE_FACTOR_0 = 0.972f; 89 private static final float EXTRA_SCALE_FACTOR_1 = 1.0f; 90 private static final float EXTRA_SCALE_FACTOR_2 = 1.10f; 91 92 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 93 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 94 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 95 96 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 97 private static final int BACKGROUND_FADE_IN_DURATION = 350; 98 99 private static final int ADJACENT_SCREEN_DROP_DURATION = 300; 100 101 // These animators are used to fade the children's outlines 102 private ObjectAnimator mChildrenOutlineFadeInAnimation; 103 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 104 private float mChildrenOutlineAlpha = 0; 105 106 // These properties refer to the background protection gradient used for AllApps and Customize 107 private ValueAnimator mBackgroundFadeInAnimation; 108 private ValueAnimator mBackgroundFadeOutAnimation; 109 private Drawable mBackground; 110 boolean mDrawBackground = true; 111 private float mBackgroundAlpha = 0; 112 private float mOverScrollMaxBackgroundAlpha = 0.0f; 113 private int mOverScrollPageIndex = -1; 114 private AnimatorSet mDividerAnimator; 115 116 private final WallpaperManager mWallpaperManager; 117 private IBinder mWindowToken; 118 119 private int mDefaultPage; 120 121 /** 122 * CellInfo for the cell that is currently being dragged 123 */ 124 private CellLayout.CellInfo mDragInfo; 125 126 /** 127 * Target drop area calculated during last acceptDrop call. 128 */ 129 private int[] mTargetCell = new int[2]; 130 131 /** 132 * The CellLayout that is currently being dragged over 133 */ 134 private CellLayout mDragTargetLayout = null; 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; 161 private boolean mIsSwitchingState = false; 162 163 private boolean mSwitchStateAfterFirstLayout = false; 164 private State mStateAfterFirstLayout; 165 166 private AnimatorSet mAnimator; 167 private AnimatorListener mShrinkAnimationListener; 168 private AnimatorListener mUnshrinkAnimationListener; 169 // Working around the face that cancelled animations may not actually be cancelled if they 170 // are cancelled before starting 171 private boolean mShrinkAnimationEnabled; 172 private boolean mUnshrinkAnimationEnabled; 173 174 boolean mAnimatingViewIntoPlace = false; 175 boolean mIsDragOccuring = false; 176 boolean mChildrenLayersEnabled = true; 177 178 /** Is the user is dragging an item near the edge of a page? */ 179 private boolean mInScrollArea = false; 180 181 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 182 private Bitmap mDragOutline = null; 183 private final Rect mTempRect = new Rect(); 184 private final int[] mTempXY = new int[2]; 185 private int mDragViewMultiplyColor; 186 187 // Paint used to draw external drop outline 188 private final Paint mExternalDragOutlinePaint = new Paint(); 189 190 // Camera and Matrix used to determine the final position of a neighboring CellLayout 191 private final Matrix mMatrix = new Matrix(); 192 private final Camera mCamera = new Camera(); 193 private final float mTempFloat2[] = new float[2]; 194 195 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 196 int mWallpaperWidth; 197 int mWallpaperHeight; 198 WallpaperOffsetInterpolator mWallpaperOffset; 199 boolean mUpdateWallpaperOffsetImmediately = false; 200 boolean mSyncWallpaperOffsetWithScroll = true; 201 private Runnable mDelayedResizeRunnable; 202 203 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 204 private static final int FOLDER_CREATION_TIMEOUT = 250; 205 private final Alarm mFolderCreationAlarm = new Alarm(); 206 private FolderRingAnimator mDragFolderRingAnimator = null; 207 private View mLastDragOverView = null; 208 private boolean mCreateUserFolderOnDrop = false; 209 210 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 211 private float mXDown; 212 private float mYDown; 213 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 214 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 215 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 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 if (!LauncherApplication.isScreenLarge()) { 269 mCenterPagesVertically = false; 270 if (!LauncherApplication.isScreenLandscape(context)) { 271 mFadeInAdjacentScreens = false; 272 } 273 } 274 275 mWallpaperManager = WallpaperManager.getInstance(context); 276 277 int cellCountX = DEFAULT_CELL_COUNT_X; 278 int cellCountY = DEFAULT_CELL_COUNT_Y; 279 280 TypedArray a = context.obtainStyledAttributes(attrs, 281 R.styleable.Workspace, defStyle, 0); 282 283 final Resources res = context.getResources(); 284 if (LauncherApplication.isScreenLarge()) { 285 // Determine number of rows/columns dynamically 286 // TODO: This code currently fails on tablets with an aspect ratio < 1.3. 287 // Around that ratio we should make cells the same size in portrait and 288 // landscape 289 TypedArray actionBarSizeTypedArray = 290 context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize }); 291 final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); 292 final float systemBarHeight = res.getDimension(R.dimen.status_bar_height); 293 final float smallestScreenDim = res.getConfiguration().smallestScreenWidthDp; 294 295 cellCountX = 1; 296 while (CellLayout.widthInPortrait(res, cellCountX + 1) <= smallestScreenDim) { 297 cellCountX++; 298 } 299 300 cellCountY = 1; 301 while (actionBarHeight + CellLayout.heightInLandscape(res, cellCountY + 1) 302 <= smallestScreenDim - systemBarHeight) { 303 cellCountY++; 304 } 305 } 306 307 mSpringLoadedShrinkFactor = 308 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 309 mDragViewMultiplyColor = res.getColor(R.color.drag_view_multiply_color); 310 311 // if the value is manually specified, use that instead 312 cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX); 313 cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY); 314 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 315 a.recycle(); 316 317 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 318 setHapticFeedbackEnabled(false); 319 320 initWorkspace(); 321 322 // Disable multitouch across the workspace/all apps/customize tray 323 setMotionEventSplittingEnabled(true); 324 } 325 326 public void onDragStart(DragSource source, Object info, int dragAction) { 327 mIsDragOccuring = true; 328 updateChildrenLayersEnabled(); 329 mLauncher.lockScreenOrientation(); 330 } 331 332 public void onDragEnd() { 333 mIsDragOccuring = false; 334 updateChildrenLayersEnabled(); 335 mLauncher.unlockScreenOrientation(); 336 } 337 338 /** 339 * Initializes various states for this workspace. 340 */ 341 protected void initWorkspace() { 342 Context context = getContext(); 343 mCurrentPage = mDefaultPage; 344 Launcher.setScreen(mCurrentPage); 345 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 346 mIconCache = app.getIconCache(); 347 mExternalDragOutlinePaint.setAntiAlias(true); 348 setWillNotDraw(false); 349 350 try { 351 final Resources res = getResources(); 352 mBackground = res.getDrawable(R.drawable.apps_customize_bg); 353 } catch (Resources.NotFoundException e) { 354 // In this case, we will skip drawing background protection 355 } 356 357 mUnshrinkAnimationListener = new AnimatorListenerAdapter() { 358 @Override 359 public void onAnimationStart(Animator animation) { 360 mIsSwitchingState = true; 361 } 362 363 @Override 364 public void onAnimationEnd(Animator animation) { 365 mIsSwitchingState = false; 366 mSyncWallpaperOffsetWithScroll = true; 367 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 368 mAnimator = null; 369 updateChildrenLayersEnabled(); 370 } 371 }; 372 mShrinkAnimationListener = new AnimatorListenerAdapter() { 373 @Override 374 public void onAnimationStart(Animator animation) { 375 mIsSwitchingState = true; 376 } 377 @Override 378 public void onAnimationEnd(Animator animation) { 379 mIsSwitchingState = false; 380 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 381 mAnimator = null; 382 } 383 }; 384 mSnapVelocity = 600; 385 mWallpaperOffset = new WallpaperOffsetInterpolator(); 386 } 387 388 @Override 389 protected int getScrollMode() { 390 return SmoothPagedView.X_LARGE_MODE; 391 } 392 393 @Override 394 protected void onViewAdded(View child) { 395 super.onViewAdded(child); 396 if (!(child instanceof CellLayout)) { 397 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 398 } 399 CellLayout cl = ((CellLayout) child); 400 cl.setOnInterceptTouchListener(this); 401 cl.setClickable(true); 402 cl.enableHardwareLayers(); 403 } 404 405 /** 406 * @return The open folder on the current screen, or null if there is none 407 */ 408 Folder getOpenFolder() { 409 DragLayer dragLayer = mLauncher.getDragLayer(); 410 int count = dragLayer.getChildCount(); 411 for (int i = 0; i < count; i++) { 412 View child = dragLayer.getChildAt(i); 413 if (child instanceof Folder) { 414 Folder folder = (Folder) child; 415 if (folder.getInfo().opened) 416 return folder; 417 } 418 } 419 return null; 420 } 421 422 boolean isTouchActive() { 423 return mTouchState != TOUCH_STATE_REST; 424 } 425 426 /** 427 * Adds the specified child in the specified screen. The position and dimension of 428 * the child are defined by x, y, spanX and spanY. 429 * 430 * @param child The child to add in one of the workspace's screens. 431 * @param screen The screen in which to add the child. 432 * @param x The X position of the child in the screen's grid. 433 * @param y The Y position of the child in the screen's grid. 434 * @param spanX The number of cells spanned horizontally by the child. 435 * @param spanY The number of cells spanned vertically by the child. 436 */ 437 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY) { 438 addInScreen(child, container, screen, x, y, spanX, spanY, false); 439 } 440 441 /** 442 * Adds the specified child in the specified screen. The position and dimension of 443 * the child are defined by x, y, spanX and spanY. 444 * 445 * @param child The child to add in one of the workspace's screens. 446 * @param screen The screen in which to add the child. 447 * @param x The X position of the child in the screen's grid. 448 * @param y The Y position of the child in the screen's grid. 449 * @param spanX The number of cells spanned horizontally by the child. 450 * @param spanY The number of cells spanned vertically by the child. 451 * @param insert When true, the child is inserted at the beginning of the children list. 452 */ 453 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY, 454 boolean insert) { 455 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 456 if (screen < 0 || screen >= getChildCount()) { 457 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 458 + " (was " + screen + "); skipping child"); 459 return; 460 } 461 } 462 463 final CellLayout layout; 464 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 465 layout = mLauncher.getHotseat().getLayout(); 466 child.setOnKeyListener(null); 467 468 // Hide folder title in the hotseat 469 if (child instanceof FolderIcon) { 470 ((FolderIcon) child).setTextVisible(false); 471 } 472 473 if (screen < 0) { 474 screen = mLauncher.getHotseat().getOrderInHotseat(x, y); 475 } else { 476 // Note: We do this to ensure that the hotseat is always laid out in the orientation 477 // of the hotseat in order regardless of which orientation they were added 478 x = mLauncher.getHotseat().getCellXFromOrder(screen); 479 y = mLauncher.getHotseat().getCellYFromOrder(screen); 480 } 481 } else { 482 // Show folder title if not in the hotseat 483 if (child instanceof FolderIcon) { 484 ((FolderIcon) child).setTextVisible(true); 485 } 486 487 layout = (CellLayout) getChildAt(screen); 488 child.setOnKeyListener(new BubbleTextViewKeyEventListener()); 489 } 490 491 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 492 if (lp == null) { 493 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 494 } else { 495 lp.cellX = x; 496 lp.cellY = y; 497 lp.cellHSpan = spanX; 498 lp.cellVSpan = spanY; 499 } 500 501 if (spanX < 0 && spanY < 0) { 502 lp.isLockedToGrid = false; 503 } 504 505 // Get the canonical child id to uniquely represent this view in this screen 506 int childId = LauncherModel.getCellLayoutChildId(container, screen, x, y, spanX, spanY); 507 boolean markCellsAsOccupied = !(child instanceof Folder); 508 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 509 // TODO: This branch occurs when the workspace is adding views 510 // outside of the defined grid 511 // maybe we should be deleting these items from the LauncherModel? 512 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 513 } 514 515 if (!(child instanceof Folder)) { 516 child.setHapticFeedbackEnabled(false); 517 child.setOnLongClickListener(mLongClickListener); 518 } 519 if (child instanceof DropTarget) { 520 mDragController.addDropTarget((DropTarget) child); 521 } 522 } 523 524 /** 525 * Check if the point (x, y) hits a given page. 526 */ 527 private boolean hitsPage(int index, float x, float y) { 528 final View page = getChildAt(index); 529 if (page != null) { 530 float[] localXY = { x, y }; 531 mapPointFromSelfToChild(page, localXY); 532 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 533 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 534 } 535 return false; 536 } 537 538 @Override 539 protected boolean hitsPreviousPage(float x, float y) { 540 // mNextPage is set to INVALID_PAGE whenever we are stationary. 541 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 542 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 543 return hitsPage(current - 1, x, y); 544 } 545 546 @Override 547 protected boolean hitsNextPage(float x, float y) { 548 // mNextPage is set to INVALID_PAGE whenever we are stationary. 549 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 550 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 551 return hitsPage(current + 1, x, y); 552 } 553 554 /** 555 * Called directly from a CellLayout (not by the framework), after we've been added as a 556 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 557 * that it should intercept touch events, which is not something that is normally supported. 558 */ 559 @Override 560 public boolean onTouch(View v, MotionEvent event) { 561 return (isSmall() || mIsSwitchingState); 562 } 563 564 public boolean isSwitchingState() { 565 return mIsSwitchingState; 566 } 567 568 protected void onWindowVisibilityChanged (int visibility) { 569 mLauncher.onWindowVisibilityChanged(visibility); 570 } 571 572 @Override 573 public boolean dispatchUnhandledMove(View focused, int direction) { 574 if (isSmall() || mIsSwitchingState) { 575 // when the home screens are shrunken, shouldn't allow side-scrolling 576 return false; 577 } 578 return super.dispatchUnhandledMove(focused, direction); 579 } 580 581 @Override 582 public boolean onInterceptTouchEvent(MotionEvent ev) { 583 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 584 case MotionEvent.ACTION_DOWN: 585 mXDown = ev.getX(); 586 mYDown = ev.getY(); 587 break; 588 case MotionEvent.ACTION_POINTER_UP: 589 case MotionEvent.ACTION_UP: 590 if (mTouchState == TOUCH_STATE_REST) { 591 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 592 if (!currentPage.lastDownOnOccupiedCell()) { 593 onWallpaperTap(ev); 594 } 595 } 596 } 597 return super.onInterceptTouchEvent(ev); 598 } 599 600 @Override 601 protected void determineScrollingStart(MotionEvent ev) { 602 if (!isSmall() && !mIsSwitchingState) { 603 float deltaX = Math.abs(ev.getX() - mXDown); 604 float deltaY = Math.abs(ev.getY() - mYDown); 605 606 if (Float.compare(deltaX, 0f) == 0) return; 607 608 float slope = deltaY / deltaX; 609 float theta = (float) Math.atan(slope); 610 611 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 612 cancelCurrentPageLongPress(); 613 } 614 615 if (theta > MAX_SWIPE_ANGLE) { 616 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 617 return; 618 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 619 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 620 // increase the touch slop to make it harder to begin scrolling the workspace. This 621 // results in vertically scrolling widgets to more easily. The higher the angle, the 622 // more we increase touch slop. 623 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 624 float extraRatio = (float) 625 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 626 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 627 } else { 628 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 629 super.determineScrollingStart(ev); 630 } 631 } 632 } 633 634 @Override 635 protected boolean isScrollingIndicatorEnabled() { 636 return mState != State.SPRING_LOADED; 637 } 638 639 protected void onPageBeginMoving() { 640 super.onPageBeginMoving(); 641 642 if (isHardwareAccelerated()) { 643 updateChildrenLayersEnabled(); 644 } else { 645 if (mNextPage != INVALID_PAGE) { 646 // we're snapping to a particular screen 647 enableChildrenCache(mCurrentPage, mNextPage); 648 } else { 649 // this is when user is actively dragging a particular screen, they might 650 // swipe it either left or right (but we won't advance by more than one screen) 651 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 652 } 653 } 654 655 // Only show page outlines as we pan if we are on large screen 656 if (LauncherApplication.isScreenLarge()) { 657 showOutlines(); 658 } 659 } 660 661 protected void onPageEndMoving() { 662 super.onPageEndMoving(); 663 664 if (isHardwareAccelerated()) { 665 updateChildrenLayersEnabled(); 666 } else { 667 clearChildrenCache(); 668 } 669 670 // Hide the outlines, as long as we're not dragging 671 if (!mDragController.dragging()) { 672 // Only hide page outlines as we pan if we are on large screen 673 if (LauncherApplication.isScreenLarge()) { 674 hideOutlines(); 675 } 676 } 677 mOverScrollMaxBackgroundAlpha = 0.0f; 678 mOverScrollPageIndex = -1; 679 680 if (mDelayedResizeRunnable != null) { 681 mDelayedResizeRunnable.run(); 682 mDelayedResizeRunnable = null; 683 } 684 } 685 686 @Override 687 protected void notifyPageSwitchListener() { 688 super.notifyPageSwitchListener(); 689 Launcher.setScreen(mCurrentPage); 690 }; 691 692 // As a ratio of screen height, the total distance we want the parallax effect to span 693 // vertically 694 private float wallpaperTravelToScreenHeightRatio(int width, int height) { 695 return 1.1f; 696 } 697 698 // As a ratio of screen height, the total distance we want the parallax effect to span 699 // horizontally 700 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 701 float aspectRatio = width / (float) height; 702 703 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 704 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 705 // We will use these two data points to extrapolate how much the wallpaper parallax effect 706 // to span (ie travel) at any aspect ratio: 707 708 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 709 final float ASPECT_RATIO_PORTRAIT = 10/16f; 710 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 711 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 712 713 // To find out the desired width at different aspect ratios, we use the following two 714 // formulas, where the coefficient on x is the aspect ratio (width/height): 715 // (16/10)x + y = 1.5 716 // (10/16)x + y = 1.2 717 // We solve for x and y and end up with a final formula: 718 final float x = 719 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 720 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 721 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 722 return x * aspectRatio + y; 723 } 724 725 // The range of scroll values for Workspace 726 private int getScrollRange() { 727 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 728 } 729 730 protected void setWallpaperDimension() { 731 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 732 DisplayMetrics displayMetrics = new DisplayMetrics(); 733 display.getRealMetrics(displayMetrics); 734 final int maxDim = Math.max(displayMetrics.widthPixels, displayMetrics.heightPixels); 735 final int minDim = Math.min(displayMetrics.widthPixels, displayMetrics.heightPixels); 736 737 // We need to ensure that there is enough extra space in the wallpaper for the intended 738 // parallax effects 739 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 740 mWallpaperHeight = (int)(maxDim * wallpaperTravelToScreenHeightRatio(maxDim, minDim)); 741 new Thread("setWallpaperDimension") { 742 public void run() { 743 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 744 } 745 }.start(); 746 } 747 748 public void setVerticalWallpaperOffset(float offset) { 749 mWallpaperOffset.setFinalY(offset); 750 } 751 public float getVerticalWallpaperOffset() { 752 return mWallpaperOffset.getCurrY(); 753 } 754 public void setHorizontalWallpaperOffset(float offset) { 755 mWallpaperOffset.setFinalX(offset); 756 } 757 public float getHorizontalWallpaperOffset() { 758 return mWallpaperOffset.getCurrX(); 759 } 760 761 private float wallpaperOffsetForCurrentScroll() { 762 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 763 final boolean isStaticWallpaper = (mWallpaperManager.getWallpaperInfo() == null); 764 // The wallpaper travel width is how far, from left to right, the wallpaper will move 765 // at this orientation (for example, in portrait mode we don't move all the way to the 766 // edges of the wallpaper, or otherwise the parallax effect would be too strong) 767 int wallpaperTravelWidth = (int) (display.getWidth() * 768 wallpaperTravelToScreenWidthRatio(display.getWidth(), display.getHeight())); 769 if (!isStaticWallpaper) { 770 wallpaperTravelWidth = mWallpaperWidth; 771 } 772 773 // Set wallpaper offset steps (1 / (number of screens - 1)) 774 // We have 3 vertical offset states (centered, and then top/bottom aligned 775 // for all apps/customize) 776 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f / (3 - 1)); 777 778 int scrollRange = getScrollRange(); 779 float scrollProgressOffset = 0; 780 781 // Account for overscroll: you only see the absolute edge of the wallpaper if 782 // you overscroll as far as you can in landscape mode. Only do this for static wallpapers 783 // because live wallpapers (and probably 3rd party wallpaper providers) rely on the offset 784 // being even intervals from 0 to 1 (eg [0, 0.25, 0.5, 0.75, 1]) 785 if (isStaticWallpaper) { 786 int overscrollOffset = (int) (maxOverScroll() * display.getWidth()); 787 scrollProgressOffset += overscrollOffset / (float) getScrollRange(); 788 scrollRange += 2 * overscrollOffset; 789 } 790 791 float scrollProgress = 792 mScrollX / (float) scrollRange + scrollProgressOffset; 793 float offsetInDips = wallpaperTravelWidth * scrollProgress + 794 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 795 float offset = offsetInDips / (float) mWallpaperWidth; 796 return offset; 797 } 798 private void syncWallpaperOffsetWithScroll() { 799 final boolean enableWallpaperEffects = isHardwareAccelerated(); 800 if (enableWallpaperEffects) { 801 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 802 } 803 } 804 805 public void updateWallpaperOffsetImmediately() { 806 mUpdateWallpaperOffsetImmediately = true; 807 } 808 809 private void updateWallpaperOffsets() { 810 boolean updateNow = false; 811 boolean keepUpdating = true; 812 if (mUpdateWallpaperOffsetImmediately) { 813 updateNow = true; 814 keepUpdating = false; 815 mWallpaperOffset.jumpToFinal(); 816 mUpdateWallpaperOffsetImmediately = false; 817 } else { 818 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 819 } 820 if (updateNow) { 821 if (mWindowToken != null) { 822 mWallpaperManager.setWallpaperOffsets(mWindowToken, 823 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 824 } 825 } 826 if (keepUpdating) { 827 fastInvalidate(); 828 } 829 } 830 831 class WallpaperOffsetInterpolator { 832 float mFinalHorizontalWallpaperOffset = 0.0f; 833 float mFinalVerticalWallpaperOffset = 0.5f; 834 float mHorizontalWallpaperOffset = 0.0f; 835 float mVerticalWallpaperOffset = 0.5f; 836 long mLastWallpaperOffsetUpdateTime; 837 boolean mIsMovingFast; 838 boolean mOverrideHorizontalCatchupConstant; 839 float mHorizontalCatchupConstant = 0.35f; 840 float mVerticalCatchupConstant = 0.35f; 841 842 public WallpaperOffsetInterpolator() { 843 } 844 845 public void setOverrideHorizontalCatchupConstant(boolean override) { 846 mOverrideHorizontalCatchupConstant = override; 847 } 848 849 public void setHorizontalCatchupConstant(float f) { 850 mHorizontalCatchupConstant = f; 851 } 852 853 public void setVerticalCatchupConstant(float f) { 854 mVerticalCatchupConstant = f; 855 } 856 857 public boolean computeScrollOffset() { 858 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 859 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 860 mIsMovingFast = false; 861 return false; 862 } 863 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 864 boolean isLandscape = display.getWidth() > display.getHeight(); 865 866 long currentTime = System.currentTimeMillis(); 867 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 868 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 869 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 870 871 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 872 if (!mIsMovingFast && xdiff > 0.07) { 873 mIsMovingFast = true; 874 } 875 876 float fractionToCatchUpIn1MsHorizontal; 877 if (mOverrideHorizontalCatchupConstant) { 878 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 879 } else if (mIsMovingFast) { 880 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 881 } else { 882 // slow 883 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 884 } 885 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 886 887 fractionToCatchUpIn1MsHorizontal /= 33f; 888 fractionToCatchUpIn1MsVertical /= 33f; 889 890 final float UPDATE_THRESHOLD = 0.00001f; 891 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 892 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 893 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 894 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 895 if (jumpToFinalValue) { 896 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 897 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 898 } else { 899 float percentToCatchUpVertical = 900 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 901 float percentToCatchUpHorizontal = 902 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 903 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 904 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 905 } 906 907 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 908 return true; 909 } 910 911 public float getCurrX() { 912 return mHorizontalWallpaperOffset; 913 } 914 915 public float getFinalX() { 916 return mFinalHorizontalWallpaperOffset; 917 } 918 919 public float getCurrY() { 920 return mVerticalWallpaperOffset; 921 } 922 923 public float getFinalY() { 924 return mFinalVerticalWallpaperOffset; 925 } 926 927 public void setFinalX(float x) { 928 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 929 } 930 931 public void setFinalY(float y) { 932 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 933 } 934 935 public void jumpToFinal() { 936 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 937 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 938 } 939 } 940 941 @Override 942 public void computeScroll() { 943 super.computeScroll(); 944 if (mSyncWallpaperOffsetWithScroll) { 945 syncWallpaperOffsetWithScroll(); 946 } 947 } 948 949 void showOutlines() { 950 if (!isSmall() && !mIsSwitchingState) { 951 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 952 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 953 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 954 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 955 mChildrenOutlineFadeInAnimation.start(); 956 } 957 } 958 959 void hideOutlines() { 960 if (!isSmall() && !mIsSwitchingState) { 961 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 962 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 963 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 964 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 965 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 966 mChildrenOutlineFadeOutAnimation.start(); 967 } 968 } 969 970 public void showOutlinesTemporarily() { 971 if (!mIsPageMoving && !isTouchActive()) { 972 snapToPage(mCurrentPage); 973 } 974 } 975 976 public void setChildrenOutlineAlpha(float alpha) { 977 mChildrenOutlineAlpha = alpha; 978 for (int i = 0; i < getChildCount(); i++) { 979 CellLayout cl = (CellLayout) getChildAt(i); 980 cl.setBackgroundAlpha(alpha); 981 } 982 } 983 984 public float getChildrenOutlineAlpha() { 985 return mChildrenOutlineAlpha; 986 } 987 988 void disableBackground() { 989 mDrawBackground = false; 990 } 991 void enableBackground() { 992 mDrawBackground = true; 993 } 994 995 private void animateBackgroundGradient(float finalAlpha, boolean animated) { 996 if (mBackground == null) return; 997 if (mBackgroundFadeInAnimation != null) { 998 mBackgroundFadeInAnimation.cancel(); 999 mBackgroundFadeInAnimation = null; 1000 } 1001 if (mBackgroundFadeOutAnimation != null) { 1002 mBackgroundFadeOutAnimation.cancel(); 1003 mBackgroundFadeOutAnimation = null; 1004 } 1005 float startAlpha = getBackgroundAlpha(); 1006 if (finalAlpha != startAlpha) { 1007 if (animated) { 1008 mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(startAlpha, finalAlpha); 1009 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1010 public void onAnimationUpdate(ValueAnimator animation) { 1011 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1012 } 1013 }); 1014 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1015 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1016 mBackgroundFadeOutAnimation.start(); 1017 } else { 1018 setBackgroundAlpha(finalAlpha); 1019 } 1020 } 1021 } 1022 1023 public void setBackgroundAlpha(float alpha) { 1024 if (alpha != mBackgroundAlpha) { 1025 mBackgroundAlpha = alpha; 1026 invalidate(); 1027 } 1028 } 1029 1030 public float getBackgroundAlpha() { 1031 return mBackgroundAlpha; 1032 } 1033 1034 /** 1035 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 1036 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 1037 * as being larger. This method computes what offset the rotated view should be translated 1038 * in order to minimize this perceived gap. 1039 * @param degrees Angle of the view 1040 * @param width Width of the view 1041 * @param height Height of the view 1042 * @return Offset to be used in a View.setTranslationX() call 1043 */ 1044 private float getOffsetXForRotation(float degrees, int width, int height) { 1045 mMatrix.reset(); 1046 mCamera.save(); 1047 mCamera.rotateY(Math.abs(degrees)); 1048 mCamera.getMatrix(mMatrix); 1049 mCamera.restore(); 1050 1051 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 1052 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 1053 mTempFloat2[0] = width; 1054 mTempFloat2[1] = height; 1055 mMatrix.mapPoints(mTempFloat2); 1056 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 1057 } 1058 1059 float backgroundAlphaInterpolator(float r) { 1060 float pivotA = 0.1f; 1061 float pivotB = 0.4f; 1062 if (r < pivotA) { 1063 return 0; 1064 } else if (r > pivotB) { 1065 return 1.0f; 1066 } else { 1067 return (r - pivotA)/(pivotB - pivotA); 1068 } 1069 } 1070 1071 float overScrollBackgroundAlphaInterpolator(float r) { 1072 float threshold = 0.08f; 1073 1074 if (r > mOverScrollMaxBackgroundAlpha) { 1075 mOverScrollMaxBackgroundAlpha = r; 1076 } else if (r < mOverScrollMaxBackgroundAlpha) { 1077 r = mOverScrollMaxBackgroundAlpha; 1078 } 1079 1080 return Math.min(r / threshold, 1.0f); 1081 } 1082 1083 @Override 1084 protected void screenScrolled(int screenCenter) { 1085 super.screenScrolled(screenCenter); 1086 1087 // If the screen is not xlarge, then don't rotate the CellLayouts 1088 // NOTE: If we don't update the side pages alpha, then we should not hide the side pages. 1089 // see unshrink(). 1090 if (!LauncherApplication.isScreenLarge()) return; 1091 1092 final int halfScreenSize = getMeasuredWidth() / 2; 1093 1094 for (int i = 0; i < getChildCount(); i++) { 1095 CellLayout cl = (CellLayout) getChildAt(i); 1096 if (cl != null) { 1097 int totalDistance = getScaledMeasuredWidth(cl) + mPageSpacing; 1098 int delta = screenCenter - (getChildOffset(i) - 1099 getRelativeChildOffset(i) + halfScreenSize); 1100 1101 float scrollProgress = delta / (totalDistance * 1.0f); 1102 scrollProgress = Math.min(scrollProgress, 1.0f); 1103 scrollProgress = Math.max(scrollProgress, -1.0f); 1104 1105 if (mState != State.SPRING_LOADED) { 1106 // If the current page (i) is being overscrolled, we use a different 1107 // set of rules for setting the background alpha multiplier. 1108 if ((mScrollX < 0 && i == 0) || (mScrollX > mMaxScrollX && 1109 i == getChildCount() -1 )) { 1110 cl.setBackgroundAlphaMultiplier( 1111 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 1112 mOverScrollPageIndex = i; 1113 } else if (mOverScrollPageIndex != i) { 1114 cl.setBackgroundAlphaMultiplier( 1115 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1116 } 1117 } 1118 1119 float rotation = WORKSPACE_ROTATION * scrollProgress; 1120 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1121 cl.setTranslationX(translationX); 1122 1123 cl.setRotationY(rotation); 1124 } 1125 } 1126 } 1127 1128 protected void onAttachedToWindow() { 1129 super.onAttachedToWindow(); 1130 mWindowToken = getWindowToken(); 1131 computeScroll(); 1132 mDragController.setWindowToken(mWindowToken); 1133 } 1134 1135 protected void onDetachedFromWindow() { 1136 mWindowToken = null; 1137 } 1138 1139 @Override 1140 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1141 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1142 mUpdateWallpaperOffsetImmediately = true; 1143 } 1144 super.onLayout(changed, left, top, right, bottom); 1145 1146 // if shrinkToBottom() is called on initialization, it has to be deferred 1147 // until after the first call to onLayout so that it has the correct width 1148 if (mSwitchStateAfterFirstLayout) { 1149 mSwitchStateAfterFirstLayout = false; 1150 // shrink can trigger a synchronous onLayout call, so we 1151 // post this to avoid a stack overflow / tangled onLayout calls 1152 post(new Runnable() { 1153 public void run() { 1154 shrink(mStateAfterFirstLayout, false); 1155 } 1156 }); 1157 } 1158 } 1159 1160 @Override 1161 protected void onDraw(Canvas canvas) { 1162 updateWallpaperOffsets(); 1163 1164 // Draw the background gradient if necessary 1165 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1166 int alpha = (int) (mBackgroundAlpha * 255); 1167 mBackground.setAlpha(alpha); 1168 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1169 getMeasuredHeight()); 1170 mBackground.draw(canvas); 1171 } 1172 1173 super.onDraw(canvas); 1174 } 1175 1176 @Override 1177 protected void dispatchDraw(Canvas canvas) { 1178 super.dispatchDraw(canvas); 1179 1180 if (mInScrollArea && !LauncherApplication.isScreenLarge()) { 1181 final int width = getWidth(); 1182 final int height = getHeight(); 1183 final int pageHeight = getChildAt(0).getHeight(); 1184 1185 // This determines the height of the glowing edge: 90% of the page height 1186 final int padding = (int) ((height - pageHeight) * 0.5f + pageHeight * 0.1f); 1187 1188 final CellLayout leftPage = (CellLayout) getChildAt(mCurrentPage - 1); 1189 final CellLayout rightPage = (CellLayout) getChildAt(mCurrentPage + 1); 1190 1191 if (leftPage != null && leftPage.getIsDragOverlapping()) { 1192 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left_holo); 1193 d.setBounds(mScrollX, padding, mScrollX + d.getIntrinsicWidth(), height - padding); 1194 d.draw(canvas); 1195 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 1196 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right_holo); 1197 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), padding, mScrollX + width, height - padding); 1198 d.draw(canvas); 1199 } 1200 } 1201 } 1202 1203 @Override 1204 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1205 if (!mLauncher.isAllAppsVisible()) { 1206 final Folder openFolder = getOpenFolder(); 1207 if (openFolder != null) { 1208 return openFolder.requestFocus(direction, previouslyFocusedRect); 1209 } else { 1210 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1211 } 1212 } 1213 return false; 1214 } 1215 1216 @Override 1217 public int getDescendantFocusability() { 1218 if (isSmall()) { 1219 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1220 } 1221 return super.getDescendantFocusability(); 1222 } 1223 1224 @Override 1225 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1226 if (!mLauncher.isAllAppsVisible()) { 1227 final Folder openFolder = getOpenFolder(); 1228 if (openFolder != null) { 1229 openFolder.addFocusables(views, direction); 1230 } else { 1231 super.addFocusables(views, direction, focusableMode); 1232 } 1233 } 1234 } 1235 1236 public boolean isSmall() { 1237 return mState == State.SMALL || mState == State.SPRING_LOADED; 1238 } 1239 1240 void enableChildrenCache(int fromPage, int toPage) { 1241 if (fromPage > toPage) { 1242 final int temp = fromPage; 1243 fromPage = toPage; 1244 toPage = temp; 1245 } 1246 1247 final int screenCount = getChildCount(); 1248 1249 fromPage = Math.max(fromPage, 0); 1250 toPage = Math.min(toPage, screenCount - 1); 1251 1252 for (int i = fromPage; i <= toPage; i++) { 1253 final CellLayout layout = (CellLayout) getChildAt(i); 1254 layout.setChildrenDrawnWithCacheEnabled(true); 1255 layout.setChildrenDrawingCacheEnabled(true); 1256 } 1257 } 1258 1259 void clearChildrenCache() { 1260 final int screenCount = getChildCount(); 1261 for (int i = 0; i < screenCount; i++) { 1262 final CellLayout layout = (CellLayout) getChildAt(i); 1263 layout.setChildrenDrawnWithCacheEnabled(false); 1264 // In software mode, we don't want the items to continue to be drawn into bitmaps 1265 if (!isHardwareAccelerated()) { 1266 layout.setChildrenDrawingCacheEnabled(false); 1267 } 1268 } 1269 } 1270 1271 private void updateChildrenLayersEnabled() { 1272 boolean small = 1273 isSmall() || mIsSwitchingState || mState == State.SPRING_LOADED; 1274 boolean dragging = mAnimatingViewIntoPlace || mIsDragOccuring; 1275 boolean enableChildrenLayers = small || dragging || isPageMoving(); 1276 1277 if (enableChildrenLayers != mChildrenLayersEnabled) { 1278 mChildrenLayersEnabled = enableChildrenLayers; 1279 for (int i = 0; i < getPageCount(); i++) { 1280 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(enableChildrenLayers); 1281 } 1282 } 1283 } 1284 1285 protected void onWallpaperTap(MotionEvent ev) { 1286 final int[] position = mTempCell; 1287 getLocationOnScreen(position); 1288 1289 int pointerIndex = ev.getActionIndex(); 1290 position[0] += (int) ev.getX(pointerIndex); 1291 position[1] += (int) ev.getY(pointerIndex); 1292 1293 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1294 ev.getAction() == MotionEvent.ACTION_UP 1295 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1296 position[0], position[1], 0, null); 1297 } 1298 1299 private float getYScaleForScreen(int screen) { 1300 int x = Math.abs(screen - 2); 1301 1302 // TODO: This should be generalized for use with arbitrary rotation angles. 1303 switch(x) { 1304 case 0: return EXTRA_SCALE_FACTOR_0; 1305 case 1: return EXTRA_SCALE_FACTOR_1; 1306 case 2: return EXTRA_SCALE_FACTOR_2; 1307 } 1308 return 1.0f; 1309 } 1310 1311 public void shrink(State shrinkState) { 1312 shrink(shrinkState, true); 1313 } 1314 1315 // we use this to shrink the workspace for the all apps view and the customize view 1316 public void shrink(final State shrinkState, boolean animated) { 1317 if (mFirstLayout) { 1318 // (mFirstLayout == "first layout has not happened yet") 1319 // if we get a call to shrink() as part of our initialization (for example, if 1320 // Launcher is started in All Apps mode) then we need to wait for a layout call 1321 // to get our width so we can layout the mini-screen views correctly 1322 mSwitchStateAfterFirstLayout = true; 1323 mStateAfterFirstLayout = shrinkState; 1324 return; 1325 } 1326 1327 // Stop any scrolling, move to the current page right away 1328 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1329 1330 CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 1331 if (currentPage == null) { 1332 Log.w(TAG, "currentPage is NULL! mCurrentPage " + mCurrentPage 1333 + " mNextPage " + mNextPage); 1334 return; 1335 } 1336 if (currentPage.getBackgroundAlphaMultiplier() < 1.0f) { 1337 currentPage.setBackgroundAlpha(0.0f); 1338 } 1339 currentPage.setBackgroundAlphaMultiplier(1.0f); 1340 1341 mState = shrinkState; 1342 updateChildrenLayersEnabled(); 1343 1344 // we intercept and reject all touch events when we're small, so be sure to reset the state 1345 mTouchState = TOUCH_STATE_REST; 1346 mActivePointerId = INVALID_POINTER; 1347 1348 final Resources res = getResources(); 1349 final int screenWidth = getWidth(); 1350 final int screenHeight = getHeight(); 1351 1352 // How much the workspace shrinks when we enter all apps or customization mode 1353 final float shrinkFactor = res.getInteger(R.integer.config_workspaceShrinkPercent) / 100.0f; 1354 1355 // Making the assumption that all pages have the same width as the 0th 1356 final int pageWidth = getChildAt(0).getMeasuredWidth(); 1357 final int pageHeight = getChildAt(0).getMeasuredHeight(); 1358 1359 final int scaledPageWidth = (int) (shrinkFactor * pageWidth); 1360 final int scaledPageHeight = (int) (shrinkFactor * pageHeight); 1361 final float extraScaledSpacing = res.getDimension(R.dimen.smallScreenExtraSpacing); 1362 1363 final int screenCount = getChildCount(); 1364 float totalWidth = screenCount * scaledPageWidth + (screenCount - 1) * extraScaledSpacing; 1365 1366 // We shrink and disappear to nothing 1367 boolean isPortrait = getMeasuredHeight() > getMeasuredWidth(); 1368 float y = screenHeight - scaledPageHeight - (isPortrait ? 1369 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginPortrait) : 1370 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginLandscape)); 1371 float finalAlpha = 0.0f; 1372 1373 int duration = res.getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1374 1375 // We animate all the screens to the centered position in workspace 1376 // At the same time, the screens become greyed/dimmed 1377 1378 // newX is initialized to the left-most position of the centered screens 1379 float x = mScroller.getFinalX() + screenWidth / 2 - totalWidth / 2; 1380 1381 // We are going to scale about the center of the view, so we need to adjust the positions 1382 // of the views accordingly 1383 x -= (pageWidth - scaledPageWidth) / 2.0f; 1384 y -= (pageHeight - scaledPageHeight) / 2.0f; 1385 1386 if (mAnimator != null) { 1387 mAnimator.cancel(); 1388 } 1389 1390 mAnimator = new AnimatorSet(); 1391 // Workaround the AnimatorSet cancel bug... 1392 mUnshrinkAnimationEnabled = false; 1393 mShrinkAnimationEnabled = true; 1394 1395 initAnimationArrays(); 1396 1397 for (int i = 0; i < screenCount; i++) { 1398 final CellLayout cl = (CellLayout) getChildAt(i); 1399 1400 float rotation = (-i + 2) * WORKSPACE_ROTATION; 1401 float rotationScaleX = (float) (1.0f / Math.cos(Math.PI * rotation / 180.0f)); 1402 float rotationScaleY = getYScaleForScreen(i); 1403 1404 mOldAlphas[i] = cl.getAlpha(); 1405 mNewAlphas[i] = finalAlpha; 1406 if (animated && (mOldAlphas[i] != 0f || mNewAlphas[i] != 0f)) { 1407 // if the CellLayout will be visible during the animation, force building its 1408 // hardware layer immediately so we don't see a blip later in the animation 1409 cl.buildChildrenLayer(); 1410 } 1411 if (animated) { 1412 mOldTranslationXs[i] = cl.getX(); 1413 mOldTranslationYs[i] = cl.getY(); 1414 mOldScaleXs[i] = cl.getScaleX(); 1415 mOldScaleYs[i] = cl.getScaleY(); 1416 mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1417 mOldRotationYs[i] = cl.getRotationY(); 1418 mNewTranslationXs[i] = x; 1419 mNewTranslationYs[i] = y; 1420 mNewScaleXs[i] = shrinkFactor * rotationScaleX; 1421 mNewScaleYs[i] = shrinkFactor * rotationScaleY; 1422 mNewBackgroundAlphas[i] = finalAlpha; 1423 mNewRotationYs[i] = rotation; 1424 } else { 1425 cl.setX((int)x); 1426 cl.setY((int)y); 1427 cl.setScaleX(shrinkFactor * rotationScaleX); 1428 cl.setScaleY(shrinkFactor * rotationScaleY); 1429 cl.setBackgroundAlpha(finalAlpha); 1430 cl.setFastAlpha(finalAlpha); 1431 cl.setRotationY(rotation); 1432 mShrinkAnimationListener.onAnimationEnd(null); 1433 } 1434 // increment newX for the next screen 1435 x += scaledPageWidth + extraScaledSpacing; 1436 } 1437 1438 float wallpaperOffset = 0.5f; 1439 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 1440 int wallpaperTravelHeight = (int) (display.getHeight() * 1441 wallpaperTravelToScreenHeightRatio(display.getWidth(), display.getHeight())); 1442 float offsetFromCenter = (wallpaperTravelHeight / (float) mWallpaperHeight) / 2f; 1443 boolean isLandscape = display.getWidth() > display.getHeight(); 1444 1445 // on phones, don't scroll the wallpaper horizontally or vertically when switching 1446 // to/from all apps 1447 final boolean enableWallpaperEffects = 1448 isHardwareAccelerated() && LauncherApplication.isScreenLarge(); 1449 if (enableWallpaperEffects) { 1450 switch (shrinkState) { 1451 // animating in 1452 case SPRING_LOADED: 1453 wallpaperOffset = 0.5f; 1454 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.34f : 0.32f); 1455 break; 1456 case SMALL: 1457 // allapps 1458 wallpaperOffset = 0.5f - offsetFromCenter; 1459 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.34f : 0.32f); 1460 break; 1461 } 1462 } 1463 1464 setLayoutScale(1.0f); 1465 if (animated) { 1466 if (enableWallpaperEffects) { 1467 mWallpaperOffset.setHorizontalCatchupConstant(0.46f); 1468 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1469 } 1470 1471 mSyncWallpaperOffsetWithScroll = false; 1472 1473 ValueAnimator animWithInterpolator = 1474 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1475 animWithInterpolator.setInterpolator(mZoomOutInterpolator); 1476 1477 final float oldHorizontalWallpaperOffset = getHorizontalWallpaperOffset(); 1478 final float oldVerticalWallpaperOffset = getVerticalWallpaperOffset(); 1479 final float newHorizontalWallpaperOffset = 0.5f; 1480 final float newVerticalWallpaperOffset = wallpaperOffset; 1481 animWithInterpolator.addUpdateListener(new LauncherAnimatorUpdateListener() { 1482 public void onAnimationUpdate(float a, float b) { 1483 if (!mShrinkAnimationEnabled) return; 1484 mTransitionProgress = b; 1485 if (b == 0f) { 1486 // an optimization, and required for correct behavior. 1487 return; 1488 } 1489 invalidate(); 1490 if (enableWallpaperEffects) { 1491 setHorizontalWallpaperOffset( 1492 a * oldHorizontalWallpaperOffset + b * newHorizontalWallpaperOffset); 1493 setVerticalWallpaperOffset( 1494 a * oldVerticalWallpaperOffset + b * newVerticalWallpaperOffset); 1495 } 1496 for (int i = 0; i < screenCount; i++) { 1497 final CellLayout cl = (CellLayout) getChildAt(i); 1498 cl.fastInvalidate(); 1499 cl.setFastX(a * mOldTranslationXs[i] + b * mNewTranslationXs[i]); 1500 cl.setFastY(a * mOldTranslationYs[i] + b * mNewTranslationYs[i]); 1501 cl.setFastScaleX(a * mOldScaleXs[i] + b * mNewScaleXs[i]); 1502 cl.setFastScaleY(a * mOldScaleYs[i] + b * mNewScaleYs[i]); 1503 cl.setFastBackgroundAlpha( 1504 a * mOldBackgroundAlphas[i] + b * mNewBackgroundAlphas[i]); 1505 cl.setFastAlpha(a * mOldAlphas[i] + b * mNewAlphas[i]); 1506 cl.setFastRotationY(a * mOldRotationYs[i] + b * mNewRotationYs[i]); 1507 } 1508 } 1509 }); 1510 mAnimator.playTogether(animWithInterpolator); 1511 mAnimator.addListener(mShrinkAnimationListener); 1512 mAnimator.start(); 1513 } else if (enableWallpaperEffects) { 1514 setVerticalWallpaperOffset(wallpaperOffset); 1515 setHorizontalWallpaperOffset(0.5f); 1516 updateWallpaperOffsetImmediately(); 1517 } 1518 setChildrenDrawnWithCacheEnabled(true); 1519 } 1520 1521 @Override 1522 protected void updateAdjacentPagesAlpha() { 1523 if (!isSmall()) { 1524 super.updateAdjacentPagesAlpha(); 1525 } 1526 } 1527 1528 /* 1529 * This interpolator emulates the rate at which the perceived scale of an object changes 1530 * as its distance from a camera increases. When this interpolator is applied to a scale 1531 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1532 * from the camera. 1533 */ 1534 static class ZInterpolator implements TimeInterpolator { 1535 private float focalLength; 1536 1537 public ZInterpolator(float foc) { 1538 focalLength = foc; 1539 } 1540 1541 public float getInterpolation(float input) { 1542 return (1.0f - focalLength / (focalLength + input)) / 1543 (1.0f - focalLength / (focalLength + 1.0f)); 1544 } 1545 } 1546 1547 /* 1548 * The exact reverse of ZInterpolator. 1549 */ 1550 static class InverseZInterpolator implements TimeInterpolator { 1551 private ZInterpolator zInterpolator; 1552 public InverseZInterpolator(float foc) { 1553 zInterpolator = new ZInterpolator(foc); 1554 } 1555 public float getInterpolation(float input) { 1556 return 1 - zInterpolator.getInterpolation(1 - input); 1557 } 1558 } 1559 1560 /* 1561 * ZInterpolator compounded with an ease-out. 1562 */ 1563 static class ZoomOutInterpolator implements TimeInterpolator { 1564 private final ZInterpolator zInterpolator = new ZInterpolator(0.2f); 1565 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(1.8f); 1566 1567 public float getInterpolation(float input) { 1568 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1569 } 1570 } 1571 1572 /* 1573 * InvereZInterpolator compounded with an ease-out. 1574 */ 1575 static class ZoomInInterpolator implements TimeInterpolator { 1576 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1577 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1578 1579 public float getInterpolation(float input) { 1580 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1581 } 1582 } 1583 1584 private final ZoomOutInterpolator mZoomOutInterpolator = new ZoomOutInterpolator(); 1585 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1586 1587 /* 1588 * 1589 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1590 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1591 * 1592 * These methods mark the appropriate pages as accepting drops (which alters their visual 1593 * appearance). 1594 * 1595 */ 1596 public void onDragStartedWithItem(View v) { 1597 final Canvas canvas = new Canvas(); 1598 1599 // We need to add extra padding to the bitmap to make room for the glow effect 1600 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1601 1602 // The outline is used to visualize where the item will land if dropped 1603 mDragOutline = createDragOutline(v, canvas, bitmapPadding); 1604 } 1605 1606 public void onDragStartedWithItemSpans(int spanX, int spanY, Bitmap b) { 1607 final Canvas canvas = new Canvas(); 1608 1609 // We need to add extra padding to the bitmap to make room for the glow effect 1610 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1611 1612 CellLayout cl = (CellLayout) getChildAt(0); 1613 1614 int[] size = cl.cellSpansToSize(spanX, spanY); 1615 1616 // The outline is used to visualize where the item will land if dropped 1617 mDragOutline = createDragOutline(b, canvas, bitmapPadding, size[0], size[1]); 1618 } 1619 1620 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1621 // never dragged over 1622 public void onDragStopped(boolean success) { 1623 // In the success case, DragController has already called onDragExit() 1624 if (!success) { 1625 doDragExit(null); 1626 } 1627 } 1628 1629 // We call this when we trigger an unshrink by clicking on the CellLayout cl 1630 public void unshrink(CellLayout clThatWasClicked) { 1631 unshrink(clThatWasClicked, false); 1632 } 1633 1634 public void unshrink(CellLayout clThatWasClicked, boolean springLoaded) { 1635 int newCurrentPage = indexOfChild(clThatWasClicked); 1636 if (isSmall()) { 1637 if (springLoaded) { 1638 setLayoutScale(mSpringLoadedShrinkFactor); 1639 } 1640 scrollToNewPageWithoutMovingPages(newCurrentPage); 1641 unshrink(true, springLoaded); 1642 } 1643 } 1644 1645 1646 public void enterSpringLoadedDragMode(CellLayout clThatWasClicked) { 1647 unshrink(clThatWasClicked, true); 1648 } 1649 1650 public void exitSpringLoadedDragMode(State shrinkState) { 1651 shrink(shrinkState); 1652 } 1653 1654 public void exitWidgetResizeMode() { 1655 DragLayer dragLayer = mLauncher.getDragLayer(); 1656 dragLayer.clearAllResizeFrames(); 1657 } 1658 1659 void unshrink(boolean animated) { 1660 unshrink(animated, false); 1661 } 1662 1663 private void initAnimationArrays() { 1664 final int childCount = getChildCount(); 1665 if (mOldTranslationXs != null) return; 1666 mOldTranslationXs = new float[childCount]; 1667 mOldTranslationYs = new float[childCount]; 1668 mOldScaleXs = new float[childCount]; 1669 mOldScaleYs = new float[childCount]; 1670 mOldBackgroundAlphas = new float[childCount]; 1671 mOldBackgroundAlphaMultipliers = new float[childCount]; 1672 mOldAlphas = new float[childCount]; 1673 mOldRotationYs = new float[childCount]; 1674 mNewTranslationXs = new float[childCount]; 1675 mNewTranslationYs = new float[childCount]; 1676 mNewScaleXs = new float[childCount]; 1677 mNewScaleYs = new float[childCount]; 1678 mNewBackgroundAlphas = new float[childCount]; 1679 mNewBackgroundAlphaMultipliers = new float[childCount]; 1680 mNewAlphas = new float[childCount]; 1681 mNewRotationYs = new float[childCount]; 1682 } 1683 1684 void unshrink(boolean animated, final boolean springLoaded) { 1685 if (mFirstLayout) { 1686 // (mFirstLayout == "first layout has not happened yet") 1687 // cancel any pending shrinks that were set earlier 1688 mSwitchStateAfterFirstLayout = false; 1689 mStateAfterFirstLayout = State.NORMAL; 1690 return; 1691 } 1692 1693 if (isSmall()) { 1694 float finalScaleFactor = 1.0f; 1695 float finalBackgroundAlpha = 0.0f; 1696 if (springLoaded) { 1697 finalScaleFactor = mSpringLoadedShrinkFactor; 1698 finalBackgroundAlpha = 1.0f; 1699 mState = State.SPRING_LOADED; 1700 } else { 1701 mState = State.NORMAL; 1702 } 1703 if (mAnimator != null) { 1704 mAnimator.cancel(); 1705 } 1706 1707 mAnimator = new AnimatorSet(); 1708 1709 // Workaround the AnimatorSet cancel bug... 1710 mShrinkAnimationEnabled = false; 1711 mUnshrinkAnimationEnabled = true; 1712 1713 final int screenCount = getChildCount(); 1714 initAnimationArrays(); 1715 1716 final int duration = getResources().getInteger(R.integer.config_workspaceUnshrinkTime); 1717 for (int i = 0; i < screenCount; i++) { 1718 final CellLayout cl = (CellLayout)getChildAt(i); 1719 float finalAlphaValue = 0f; 1720 float rotation = 0f; 1721 1722 // Set the final alpha depending on whether we are fading side pages. On phone ui, 1723 // we don't do any of the rotation, or the fading alpha in portrait. See the 1724 // ctor and screenScrolled(). 1725 if (mFadeInAdjacentScreens && !springLoaded) { 1726 finalAlphaValue = (i == mCurrentPage) ? 1f : 0f; 1727 } else { 1728 finalAlphaValue = 1f; 1729 } 1730 1731 if (LauncherApplication.isScreenLarge()) { 1732 if (i < mCurrentPage) { 1733 rotation = WORKSPACE_ROTATION; 1734 } else if (i > mCurrentPage) { 1735 rotation = -WORKSPACE_ROTATION; 1736 } 1737 } 1738 float finalAlphaMultiplierValue = 1f; 1739 1740 float translation = 0f; 1741 1742 // If the screen is not xlarge, then don't rotate the CellLayouts 1743 // NOTE: If we don't update the side pages alpha, then we should not hide the side 1744 // pages. see unshrink(). 1745 if (LauncherApplication.isScreenLarge()) { 1746 translation = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1747 } 1748 1749 mOldAlphas[i] = cl.getAlpha(); 1750 mNewAlphas[i] = finalAlphaValue; 1751 if (animated) { 1752 mOldTranslationXs[i] = cl.getTranslationX(); 1753 mOldTranslationYs[i] = cl.getTranslationY(); 1754 mOldScaleXs[i] = cl.getScaleX(); 1755 mOldScaleYs[i] = cl.getScaleY(); 1756 mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1757 mOldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1758 mOldRotationYs[i] = cl.getRotationY(); 1759 1760 mNewTranslationXs[i] = translation; 1761 mNewTranslationYs[i] = 0f; 1762 mNewScaleXs[i] = finalScaleFactor; 1763 mNewScaleYs[i] = finalScaleFactor; 1764 mNewBackgroundAlphas[i] = finalBackgroundAlpha; 1765 mNewBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1766 mNewRotationYs[i] = rotation; 1767 } else { 1768 cl.setTranslationX(translation); 1769 cl.setTranslationY(0.0f); 1770 cl.setScaleX(finalScaleFactor); 1771 cl.setScaleY(finalScaleFactor); 1772 cl.setBackgroundAlpha(0.0f); 1773 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1774 cl.setAlpha(finalAlphaValue); 1775 cl.setRotationY(rotation); 1776 mUnshrinkAnimationListener.onAnimationEnd(null); 1777 } 1778 } 1779 1780 // Unshrink the hotset the same amount we are unshrinking the screens 1781 if (mLauncher.getHotseat() != null) { 1782 View hotseat = mLauncher.getHotseat().getLayout(); 1783 hotseat.setScaleX(finalScaleFactor); 1784 hotseat.setScaleY(finalScaleFactor); 1785 } 1786 1787 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 1788 boolean isLandscape = display.getWidth() > display.getHeight(); 1789 // on phones, don't scroll the wallpaper horizontally or vertically when switching 1790 // to/from all apps 1791 final boolean enableWallpaperEffects = 1792 isHardwareAccelerated() && LauncherApplication.isScreenLarge(); 1793 if (enableWallpaperEffects) { 1794 switch (mState) { 1795 // animating out 1796 case SPRING_LOADED: 1797 if (animated) { 1798 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.49f : 0.46f); 1799 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.49f : 0.46f); 1800 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1801 } 1802 break; 1803 case SMALL: 1804 // all apps 1805 if (animated) { 1806 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.65f : 0.65f); 1807 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.65f : 0.65f); 1808 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1809 } 1810 break; 1811 } 1812 } 1813 if (animated) { 1814 ValueAnimator animWithInterpolator = 1815 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1816 animWithInterpolator.setInterpolator(mZoomInInterpolator); 1817 1818 final float oldHorizontalWallpaperOffset = enableWallpaperEffects ? 1819 getHorizontalWallpaperOffset() : 0; 1820 final float oldVerticalWallpaperOffset = enableWallpaperEffects ? 1821 getVerticalWallpaperOffset() : 0; 1822 final float newHorizontalWallpaperOffset = enableWallpaperEffects ? 1823 wallpaperOffsetForCurrentScroll() : 0; 1824 final float newVerticalWallpaperOffset = enableWallpaperEffects ? 0.5f : 0; 1825 animWithInterpolator.addUpdateListener(new LauncherAnimatorUpdateListener() { 1826 public void onAnimationUpdate(float a, float b) { 1827 if (!mUnshrinkAnimationEnabled) return; 1828 mTransitionProgress = b; 1829 if (b == 0f) { 1830 // an optimization, but not required 1831 return; 1832 } 1833 invalidate(); 1834 if (enableWallpaperEffects) { 1835 setHorizontalWallpaperOffset(a * oldHorizontalWallpaperOffset 1836 + b * newHorizontalWallpaperOffset); 1837 setVerticalWallpaperOffset(a * oldVerticalWallpaperOffset 1838 + b * newVerticalWallpaperOffset); 1839 } 1840 for (int i = 0; i < screenCount; i++) { 1841 final CellLayout cl = (CellLayout) getChildAt(i); 1842 cl.fastInvalidate(); 1843 cl.setFastTranslationX( 1844 a * mOldTranslationXs[i] + b * mNewTranslationXs[i]); 1845 cl.setFastTranslationY( 1846 a * mOldTranslationYs[i] + b * mNewTranslationYs[i]); 1847 cl.setFastScaleX(a * mOldScaleXs[i] + b * mNewScaleXs[i]); 1848 cl.setFastScaleY(a * mOldScaleYs[i] + b * mNewScaleYs[i]); 1849 cl.setFastBackgroundAlpha( 1850 a * mOldBackgroundAlphas[i] + b * mNewBackgroundAlphas[i]); 1851 cl.setBackgroundAlphaMultiplier(a * mOldBackgroundAlphaMultipliers[i] + 1852 b * mNewBackgroundAlphaMultipliers[i]); 1853 cl.setFastAlpha(a * mOldAlphas[i] + b * mNewAlphas[i]); 1854 } 1855 } 1856 }); 1857 1858 ValueAnimator rotationAnim = 1859 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1860 rotationAnim.setInterpolator(new DecelerateInterpolator(2.0f)); 1861 rotationAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1862 public void onAnimationUpdate(float a, float b) { 1863 if (!mUnshrinkAnimationEnabled) return; 1864 // don't invalidate workspace because we did it above 1865 if (b == 0f) { 1866 // an optimization, but not required 1867 return; 1868 } 1869 for (int i = 0; i < screenCount; i++) { 1870 final CellLayout cl = (CellLayout) getChildAt(i); 1871 cl.setFastRotationY(a * mOldRotationYs[i] + b * mNewRotationYs[i]); 1872 } 1873 } 1874 }); 1875 1876 mAnimator.playTogether(animWithInterpolator, rotationAnim); 1877 // If we call this when we're not animated, onAnimationEnd is never called on 1878 // the listener; make sure we only use the listener when we're actually animating 1879 mAnimator.addListener(mUnshrinkAnimationListener); 1880 mAnimator.start(); 1881 } else { 1882 if (enableWallpaperEffects) { 1883 setHorizontalWallpaperOffset(wallpaperOffsetForCurrentScroll()); 1884 setVerticalWallpaperOffset(0.5f); 1885 updateWallpaperOffsetImmediately(); 1886 } 1887 } 1888 } 1889 1890 if (springLoaded) { 1891 // Right now we're covered by Apps Customize 1892 // Show the background gradient immediately, so the gradient will 1893 // be showing once AppsCustomize disappears 1894 animateBackgroundGradient(getResources().getInteger( 1895 R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, false); 1896 } else { 1897 // Fade the background gradient away 1898 animateBackgroundGradient(0f, true); 1899 } 1900 } 1901 1902 /** 1903 * Draw the View v into the given Canvas. 1904 * 1905 * @param v the view to draw 1906 * @param destCanvas the canvas to draw on 1907 * @param padding the horizontal and vertical padding to use when drawing 1908 */ 1909 private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { 1910 final Rect clipRect = mTempRect; 1911 v.getDrawingRect(clipRect); 1912 1913 boolean textVisible = false; 1914 1915 destCanvas.save(); 1916 if (v instanceof TextView && pruneToDrawable) { 1917 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1918 clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); 1919 destCanvas.translate(padding / 2, padding / 2); 1920 d.draw(destCanvas); 1921 } else { 1922 if (v instanceof FolderIcon) { 1923 // For FolderIcons the text can bleed into the icon area, and so we need to 1924 // hide the text completely (which can't be achieved by clipping). 1925 if (((FolderIcon) v).getTextVisible()) { 1926 ((FolderIcon) v).setTextVisible(false); 1927 textVisible = true; 1928 } 1929 } else if (v instanceof BubbleTextView) { 1930 final BubbleTextView tv = (BubbleTextView) v; 1931 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1932 tv.getLayout().getLineTop(0); 1933 } else if (v instanceof TextView) { 1934 final TextView tv = (TextView) v; 1935 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1936 tv.getLayout().getLineTop(0); 1937 } 1938 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1939 destCanvas.clipRect(clipRect, Op.REPLACE); 1940 v.draw(destCanvas); 1941 1942 // Restore text visibility of FolderIcon if necessary 1943 if (textVisible) { 1944 ((FolderIcon) v).setTextVisible(true); 1945 } 1946 } 1947 destCanvas.restore(); 1948 } 1949 1950 /** 1951 * Returns a new bitmap to show when the given View is being dragged around. 1952 * Responsibility for the bitmap is transferred to the caller. 1953 */ 1954 public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1955 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1956 Bitmap b; 1957 1958 if (v instanceof TextView) { 1959 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1960 b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, 1961 d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); 1962 } else { 1963 b = Bitmap.createBitmap( 1964 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1965 } 1966 1967 canvas.setBitmap(b); 1968 drawDragView(v, canvas, padding, true); 1969 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 1970 canvas.drawColor(mDragViewMultiplyColor, PorterDuff.Mode.MULTIPLY); 1971 canvas.setBitmap(null); 1972 1973 return b; 1974 } 1975 1976 /** 1977 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1978 * Responsibility for the bitmap is transferred to the caller. 1979 */ 1980 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1981 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1982 final Bitmap b = Bitmap.createBitmap( 1983 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1984 1985 canvas.setBitmap(b); 1986 drawDragView(v, canvas, padding, false); 1987 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1988 canvas.setBitmap(null); 1989 return b; 1990 } 1991 1992 /** 1993 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1994 * Responsibility for the bitmap is transferred to the caller. 1995 */ 1996 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h) { 1997 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1998 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1999 canvas.setBitmap(b); 2000 2001 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 2002 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 2003 (h - padding) / (float) orig.getHeight()); 2004 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 2005 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 2006 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 2007 2008 // center the image 2009 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 2010 2011 Paint p = new Paint(); 2012 p.setFilterBitmap(true); 2013 canvas.drawBitmap(orig, src, dst, p); 2014 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2015 canvas.setBitmap(null); 2016 2017 return b; 2018 } 2019 2020 /** 2021 * Creates a drag outline to represent a drop (that we don't have the actual information for 2022 * yet). May be changed in the future to alter the drop outline slightly depending on the 2023 * clip description mime data. 2024 */ 2025 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 2026 Resources r = getResources(); 2027 final int outlineColor = r.getColor(android.R.color.holo_blue_light); 2028 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 2029 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 2030 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 2031 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 2032 final Bitmap b = Bitmap.createBitmap( 2033 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 2034 2035 canvas.setBitmap(b); 2036 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 2037 rectRadius, rectRadius, mExternalDragOutlinePaint); 2038 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2039 canvas.setBitmap(null); 2040 return b; 2041 } 2042 2043 void startDrag(CellLayout.CellInfo cellInfo) { 2044 View child = cellInfo.cell; 2045 2046 // Make sure the drag was started by a long press as opposed to a long click. 2047 if (!child.isInTouchMode()) { 2048 return; 2049 } 2050 2051 mDragInfo = cellInfo; 2052 child.setVisibility(GONE); 2053 2054 child.clearFocus(); 2055 child.setPressed(false); 2056 2057 final Canvas canvas = new Canvas(); 2058 2059 // We need to add extra padding to the bitmap to make room for the glow effect 2060 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2061 2062 // The outline is used to visualize where the item will land if dropped 2063 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 2064 beginDragShared(child, this); 2065 } 2066 2067 public void beginDragShared(View child, DragSource source) { 2068 // We need to add extra padding to the bitmap to make room for the glow effect 2069 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2070 2071 // The drag bitmap follows the touch point around on the screen 2072 final Bitmap b = createDragBitmap(child, new Canvas(), bitmapPadding); 2073 2074 final int bmpWidth = b.getWidth(); 2075 2076 mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 2077 final int dragLayerX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 2078 int dragLayerY = mTempXY[1] - bitmapPadding / 2; 2079 2080 Rect dragRect = null; 2081 if (child instanceof BubbleTextView) { 2082 int iconSize = getResources().getDimensionPixelSize(R.dimen.app_icon_size); 2083 int top = child.getPaddingTop(); 2084 int left = (bmpWidth - iconSize) / 2; 2085 int right = left + iconSize; 2086 int bottom = top + iconSize; 2087 dragLayerY += top; 2088 dragRect = new Rect(left, top, right, bottom); 2089 } else if (child instanceof FolderIcon) { 2090 int previewSize = getResources().getDimensionPixelSize(R.dimen.folder_preview_size); 2091 dragRect = new Rect(0, 0, child.getWidth(), previewSize); 2092 } 2093 2094 mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 2095 DragController.DRAG_ACTION_MOVE, dragRect); 2096 b.recycle(); 2097 } 2098 2099 void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, int screen, 2100 int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { 2101 View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); 2102 2103 final int[] cellXY = new int[2]; 2104 target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 2105 addInScreen(view, container, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 2106 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, cellXY[0], 2107 cellXY[1]); 2108 } 2109 2110 public boolean transitionStateShouldAllowDrop() { 2111 return (!isSwitchingState() || mTransitionProgress > 0.5f); 2112 } 2113 2114 /** 2115 * {@inheritDoc} 2116 */ 2117 public boolean acceptDrop(DragObject d) { 2118 // If it's an external drop (e.g. from All Apps), check if it should be accepted 2119 if (d.dragSource != this) { 2120 // Don't accept the drop if we're not over a screen at time of drop 2121 if (mDragTargetLayout == null) { 2122 return false; 2123 } 2124 if (!transitionStateShouldAllowDrop()) return false; 2125 2126 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2127 d.dragView, mDragViewVisualCenter); 2128 2129 int spanX = 1; 2130 int spanY = 1; 2131 View ignoreView = null; 2132 if (mDragInfo != null) { 2133 final CellLayout.CellInfo dragCellInfo = mDragInfo; 2134 spanX = dragCellInfo.spanX; 2135 spanY = dragCellInfo.spanY; 2136 ignoreView = dragCellInfo.cell; 2137 } else { 2138 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 2139 spanX = dragInfo.spanX; 2140 spanY = dragInfo.spanY; 2141 } 2142 2143 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2144 (int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell); 2145 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, true)) { 2146 return true; 2147 } 2148 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, 2149 mTargetCell)) { 2150 return true; 2151 } 2152 2153 2154 // Don't accept the drop if there's no room for the item 2155 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 2156 mLauncher.showOutOfSpaceMessage(); 2157 return false; 2158 } 2159 } 2160 return true; 2161 } 2162 2163 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, 2164 boolean considerTimeout) { 2165 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2166 2167 boolean hasntMoved = false; 2168 if (mDragInfo != null) { 2169 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2170 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2171 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2172 } 2173 2174 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2175 return false; 2176 } 2177 2178 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2179 boolean willBecomeShortcut = 2180 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2181 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2182 2183 return (aboveShortcut && willBecomeShortcut); 2184 } 2185 2186 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell) { 2187 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2188 if (dropOverView instanceof FolderIcon) { 2189 FolderIcon fi = (FolderIcon) dropOverView; 2190 if (fi.acceptDrop(dragInfo)) { 2191 return true; 2192 } 2193 } 2194 return false; 2195 } 2196 2197 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2198 int[] targetCell, boolean external, DragView dragView, Runnable postAnimationRunnable) { 2199 View v = target.getChildAt(targetCell[0], targetCell[1]); 2200 boolean hasntMoved = false; 2201 if (mDragInfo != null) { 2202 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2203 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2204 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2205 } 2206 2207 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2208 mCreateUserFolderOnDrop = false; 2209 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 2210 2211 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2212 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2213 2214 if (aboveShortcut && willBecomeShortcut) { 2215 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2216 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2217 // if the drag started here, we need to remove it from the workspace 2218 if (!external) { 2219 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2220 } 2221 2222 Rect folderLocation = new Rect(); 2223 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2224 target.removeView(v); 2225 2226 FolderIcon fi = 2227 mLauncher.addFolder(target, container, screen, targetCell[0], targetCell[1]); 2228 destInfo.cellX = -1; 2229 destInfo.cellY = -1; 2230 sourceInfo.cellX = -1; 2231 sourceInfo.cellY = -1; 2232 2233 // If the dragView is null, we can't animate 2234 boolean animate = dragView != null; 2235 if (animate) { 2236 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2237 postAnimationRunnable); 2238 } else { 2239 fi.addItem(destInfo); 2240 fi.addItem(sourceInfo); 2241 } 2242 return true; 2243 } 2244 return false; 2245 } 2246 2247 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2248 DragObject d, boolean external) { 2249 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2250 if (dropOverView instanceof FolderIcon) { 2251 FolderIcon fi = (FolderIcon) dropOverView; 2252 if (fi.acceptDrop(d.dragInfo)) { 2253 fi.onDrop(d); 2254 2255 // if the drag started here, we need to remove it from the workspace 2256 if (!external) { 2257 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2258 } 2259 return true; 2260 } 2261 } 2262 return false; 2263 } 2264 2265 public void onDrop(DragObject d) { 2266 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2267 mDragViewVisualCenter); 2268 2269 // We want the point to be mapped to the dragTarget. 2270 if (mDragTargetLayout != null) { 2271 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2272 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2273 } else { 2274 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2275 } 2276 } 2277 2278 CellLayout dropTargetLayout = mDragTargetLayout; 2279 2280 int snapScreen = -1; 2281 if (d.dragSource != this) { 2282 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2283 (int) mDragViewVisualCenter[1] }; 2284 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2285 } else if (mDragInfo != null) { 2286 final View cell = mDragInfo.cell; 2287 2288 if (dropTargetLayout != null) { 2289 // Move internally 2290 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2291 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2292 long container = hasMovedIntoHotseat ? 2293 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2294 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2295 int screen = (mTargetCell[0] < 0) ? 2296 mDragInfo.screen : indexOfChild(dropTargetLayout); 2297 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2298 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2299 // First we find the cell nearest to point at which the item is 2300 // dropped, without any consideration to whether there is an item there. 2301 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2302 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2303 // If the item being dropped is a shortcut and the nearest drop 2304 // cell also contains a shortcut, then create a folder with the two shortcuts. 2305 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2306 dropTargetLayout, mTargetCell, false, d.dragView, null)) { 2307 return; 2308 } 2309 2310 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, d, false)) { 2311 return; 2312 } 2313 2314 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2315 // we need to find the nearest cell location that is vacant 2316 mTargetCell = findNearestVacantArea((int) mDragViewVisualCenter[0], 2317 (int) mDragViewVisualCenter[1], mDragInfo.spanX, mDragInfo.spanY, cell, 2318 dropTargetLayout, mTargetCell); 2319 2320 if (mCurrentPage != screen && !hasMovedIntoHotseat) { 2321 snapScreen = screen; 2322 snapToPage(screen); 2323 } 2324 2325 if (mTargetCell[0] >= 0 && mTargetCell[1] >= 0) { 2326 if (hasMovedLayouts) { 2327 // Reparent the view 2328 getParentCellLayoutForView(cell).removeView(cell); 2329 addInScreen(cell, container, screen, mTargetCell[0], mTargetCell[1], 2330 mDragInfo.spanX, mDragInfo.spanY); 2331 } 2332 2333 // update the item's position after drop 2334 final ItemInfo info = (ItemInfo) cell.getTag(); 2335 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2336 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 2337 lp.cellX = mTargetCell[0]; 2338 lp.cellY = mTargetCell[1]; 2339 cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screen, 2340 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2341 2342 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2343 cell instanceof LauncherAppWidgetHostView) { 2344 final CellLayout cellLayout = dropTargetLayout; 2345 // We post this call so that the widget has a chance to be placed 2346 // in its final location 2347 2348 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2349 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2350 if (pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2351 final Runnable resizeRunnable = new Runnable() { 2352 public void run() { 2353 DragLayer dragLayer = mLauncher.getDragLayer(); 2354 dragLayer.addResizeFrame(info, hostView, cellLayout); 2355 } 2356 }; 2357 post(new Runnable() { 2358 public void run() { 2359 if (!isPageMoving()) { 2360 resizeRunnable.run(); 2361 } else { 2362 mDelayedResizeRunnable = resizeRunnable; 2363 } 2364 } 2365 }); 2366 } 2367 } 2368 2369 LauncherModel.moveItemInDatabase(mLauncher, info, container, screen, lp.cellX, 2370 lp.cellY); 2371 } 2372 } 2373 2374 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2375 2376 // Prepare it to be animated into its new position 2377 // This must be called after the view has been re-parented 2378 final Runnable disableHardwareLayersRunnable = new Runnable() { 2379 @Override 2380 public void run() { 2381 mAnimatingViewIntoPlace = false; 2382 updateChildrenLayersEnabled(); 2383 } 2384 }; 2385 mAnimatingViewIntoPlace = true; 2386 if (d.dragView.hasDrawn()) { 2387 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2388 setFinalScrollForPageChange(snapScreen); 2389 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2390 disableHardwareLayersRunnable); 2391 resetFinalScrollForPageChange(snapScreen); 2392 } else { 2393 cell.setVisibility(VISIBLE); 2394 } 2395 parent.onDropChild(cell); 2396 } 2397 } 2398 2399 public void setFinalScrollForPageChange(int screen) { 2400 if (screen >= 0) { 2401 mSavedScrollX = getScrollX(); 2402 CellLayout cl = (CellLayout) getChildAt(screen); 2403 mSavedTranslationX = cl.getTranslationX(); 2404 mSavedRotationY = cl.getRotationY(); 2405 final int newX = getChildOffset(screen) - getRelativeChildOffset(screen); 2406 setScrollX(newX); 2407 cl.setTranslationX(0f); 2408 cl.setRotationY(0f); 2409 } 2410 } 2411 2412 public void resetFinalScrollForPageChange(int screen) { 2413 if (screen >= 0) { 2414 CellLayout cl = (CellLayout) getChildAt(screen); 2415 setScrollX(mSavedScrollX); 2416 cl.setTranslationX(mSavedTranslationX); 2417 cl.setRotationY(mSavedRotationY); 2418 } 2419 } 2420 2421 public void getViewLocationRelativeToSelf(View v, int[] location) { 2422 getLocationInWindow(location); 2423 int x = location[0]; 2424 int y = location[1]; 2425 2426 v.getLocationInWindow(location); 2427 int vX = location[0]; 2428 int vY = location[1]; 2429 2430 location[0] = vX - x; 2431 location[1] = vY - y; 2432 } 2433 2434 public void onDragEnter(DragObject d) { 2435 if (mDragTargetLayout != null) { 2436 mDragTargetLayout.setIsDragOverlapping(false); 2437 mDragTargetLayout.onDragExit(); 2438 } 2439 mDragTargetLayout = getCurrentDropLayout(); 2440 mDragTargetLayout.setIsDragOverlapping(true); 2441 mDragTargetLayout.onDragEnter(); 2442 2443 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2444 // don't need to show the outlines 2445 if (LauncherApplication.isScreenLarge()) { 2446 showOutlines(); 2447 } 2448 } 2449 2450 private void doDragExit(DragObject d) { 2451 // Clean up folders 2452 cleanupFolderCreation(d); 2453 2454 // Reset the scroll area and previous drag target 2455 onResetScrollArea(); 2456 2457 if (mDragTargetLayout != null) { 2458 mDragTargetLayout.setIsDragOverlapping(false); 2459 mDragTargetLayout.onDragExit(); 2460 } 2461 mLastDragOverView = null; 2462 2463 if (!mIsPageMoving) { 2464 hideOutlines(); 2465 } 2466 } 2467 2468 public void onDragExit(DragObject d) { 2469 doDragExit(d); 2470 } 2471 2472 public DropTarget getDropTargetDelegate(DragObject d) { 2473 return null; 2474 } 2475 2476 /** 2477 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 2478 * in the returned structure related to the widgets that match the drop (or a null list if it is 2479 * a shortcut drop). If the drop is not accepted then a null structure is returned. 2480 */ 2481 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 2482 final LauncherModel model = mLauncher.getModel(); 2483 final ClipDescription desc = event.getClipDescription(); 2484 final int mimeTypeCount = desc.getMimeTypeCount(); 2485 for (int i = 0; i < mimeTypeCount; ++i) { 2486 final String mimeType = desc.getMimeType(i); 2487 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 2488 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 2489 } else { 2490 final List<WidgetMimeTypeHandlerData> widgets = 2491 model.resolveWidgetsForMimeType(mContext, mimeType); 2492 if (widgets.size() > 0) { 2493 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 2494 } 2495 } 2496 } 2497 return null; 2498 } 2499 2500 /** 2501 * Global drag and drop handler 2502 */ 2503 @Override 2504 public boolean onDragEvent(DragEvent event) { 2505 final ClipDescription desc = event.getClipDescription(); 2506 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 2507 final int[] pos = new int[2]; 2508 layout.getLocationOnScreen(pos); 2509 // We need to offset the drag coordinates to layout coordinate space 2510 final int x = (int) event.getX() - pos[0]; 2511 final int y = (int) event.getY() - pos[1]; 2512 2513 switch (event.getAction()) { 2514 case DragEvent.ACTION_DRAG_STARTED: { 2515 // Validate this drag 2516 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2517 if (test != null) { 2518 boolean isShortcut = (test.second == null); 2519 if (isShortcut) { 2520 // Check if we have enough space on this screen to add a new shortcut 2521 if (!layout.findCellForSpan(pos, 1, 1)) { 2522 mLauncher.showOutOfSpaceMessage(); 2523 return false; 2524 } 2525 } 2526 } else { 2527 // Show error message if we couldn't accept any of the items 2528 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 2529 Toast.LENGTH_SHORT).show(); 2530 return false; 2531 } 2532 2533 // Create the drag outline 2534 // We need to add extra padding to the bitmap to make room for the glow effect 2535 final Canvas canvas = new Canvas(); 2536 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2537 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 2538 2539 // Show the current page outlines to indicate that we can accept this drop 2540 showOutlines(); 2541 layout.setIsDragOccuring(true); 2542 layout.onDragEnter(); 2543 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2544 2545 return true; 2546 } 2547 case DragEvent.ACTION_DRAG_LOCATION: 2548 // Visualize the drop location 2549 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2550 return true; 2551 case DragEvent.ACTION_DROP: { 2552 // Try and add any shortcuts 2553 final LauncherModel model = mLauncher.getModel(); 2554 final ClipData data = event.getClipData(); 2555 2556 // We assume that the mime types are ordered in descending importance of 2557 // representation. So we enumerate the list of mime types and alert the 2558 // user if any widgets can handle the drop. Only the most preferred 2559 // representation will be handled. 2560 pos[0] = x; 2561 pos[1] = y; 2562 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2563 if (test != null) { 2564 final int index = test.first; 2565 final List<WidgetMimeTypeHandlerData> widgets = test.second; 2566 final boolean isShortcut = (widgets == null); 2567 final String mimeType = desc.getMimeType(index); 2568 if (isShortcut) { 2569 final Intent intent = data.getItemAt(index).getIntent(); 2570 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 2571 onDropExternal(new int[] { x, y }, info, layout, false); 2572 } else { 2573 if (widgets.size() == 1) { 2574 // If there is only one item, then go ahead and add and configure 2575 // that widget 2576 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 2577 final PendingAddWidgetInfo createInfo = 2578 new PendingAddWidgetInfo(widgetInfo, mimeType, data, "11"); 2579 mLauncher.addAppWidgetFromDrop(createInfo, 2580 LauncherSettings.Favorites.CONTAINER_DESKTOP, mCurrentPage, null, pos); 2581 } else { 2582 // Show the widget picker dialog if there is more than one widget 2583 // that can handle this data type 2584 final InstallWidgetReceiver.WidgetListAdapter adapter = 2585 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 2586 data, widgets, layout, mCurrentPage, pos); 2587 final AlertDialog.Builder builder = 2588 new AlertDialog.Builder(mContext); 2589 builder.setAdapter(adapter, adapter); 2590 builder.setCancelable(true); 2591 builder.setTitle(mContext.getString( 2592 R.string.external_drop_widget_pick_title)); 2593 builder.setIcon(R.drawable.ic_no_applications); 2594 builder.show(); 2595 } 2596 } 2597 } 2598 return true; 2599 } 2600 case DragEvent.ACTION_DRAG_ENDED: 2601 // Hide the page outlines after the drop 2602 layout.setIsDragOccuring(false); 2603 layout.onDragExit(); 2604 hideOutlines(); 2605 return true; 2606 } 2607 return super.onDragEvent(event); 2608 } 2609 2610 /* 2611 * 2612 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2613 * coordinate space. The argument xy is modified with the return result. 2614 * 2615 */ 2616 void mapPointFromSelfToChild(View v, float[] xy) { 2617 mapPointFromSelfToChild(v, xy, null); 2618 } 2619 2620 /* 2621 * 2622 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2623 * coordinate space. The argument xy is modified with the return result. 2624 * 2625 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2626 * computing it itself; we use this to avoid redundant matrix inversions in 2627 * findMatchingPageForDragOver 2628 * 2629 */ 2630 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2631 if (cachedInverseMatrix == null) { 2632 v.getMatrix().invert(mTempInverseMatrix); 2633 cachedInverseMatrix = mTempInverseMatrix; 2634 } 2635 xy[0] = xy[0] + mScrollX - v.getLeft(); 2636 xy[1] = xy[1] + mScrollY - v.getTop(); 2637 cachedInverseMatrix.mapPoints(xy); 2638 } 2639 2640 /* 2641 * Maps a point from the Workspace's coordinate system to another sibling view's. (Workspace 2642 * covers the full screen) 2643 */ 2644 void mapPointFromSelfToSibling(View v, float[] xy) { 2645 xy[0] = xy[0] - v.getLeft(); 2646 xy[1] = xy[1] - v.getTop(); 2647 } 2648 2649 /* 2650 * 2651 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2652 * the parent View's coordinate space. The argument xy is modified with the return result. 2653 * 2654 */ 2655 void mapPointFromChildToSelf(View v, float[] xy) { 2656 v.getMatrix().mapPoints(xy); 2657 xy[0] -= (mScrollX - v.getLeft()); 2658 xy[1] -= (mScrollY - v.getTop()); 2659 } 2660 2661 static private float squaredDistance(float[] point1, float[] point2) { 2662 float distanceX = point1[0] - point2[0]; 2663 float distanceY = point2[1] - point2[1]; 2664 return distanceX * distanceX + distanceY * distanceY; 2665 } 2666 2667 /* 2668 * 2669 * Returns true if the passed CellLayout cl overlaps with dragView 2670 * 2671 */ 2672 boolean overlaps(CellLayout cl, DragView dragView, 2673 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2674 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2675 final float[] draggedItemTopLeft = mTempDragCoordinates; 2676 draggedItemTopLeft[0] = dragViewX; 2677 draggedItemTopLeft[1] = dragViewY; 2678 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2679 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2680 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2681 2682 // Transform the dragged item's top left coordinates 2683 // to the CellLayout's local coordinates 2684 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2685 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2686 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2687 2688 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2689 // Transform the dragged item's bottom right coordinates 2690 // to the CellLayout's local coordinates 2691 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2692 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2693 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2694 2695 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2696 float overlap = (overlapRegionRight - overlapRegionLeft) * 2697 (overlapRegionBottom - overlapRegionTop); 2698 if (overlap > 0) { 2699 return true; 2700 } 2701 } 2702 } 2703 return false; 2704 } 2705 2706 /* 2707 * 2708 * This method returns the CellLayout that is currently being dragged to. In order to drag 2709 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2710 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2711 * 2712 * Return null if no CellLayout is currently being dragged over 2713 * 2714 */ 2715 private CellLayout findMatchingPageForDragOver( 2716 DragView dragView, float originX, float originY, boolean exact) { 2717 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2718 // with the item being dragged and then choose the one that's closest to the touch point 2719 final int screenCount = getChildCount(); 2720 CellLayout bestMatchingScreen = null; 2721 float smallestDistSoFar = Float.MAX_VALUE; 2722 2723 for (int i = 0; i < screenCount; i++) { 2724 CellLayout cl = (CellLayout) getChildAt(i); 2725 2726 final float[] touchXy = {originX, originY}; 2727 // Transform the touch coordinates to the CellLayout's local coordinates 2728 // If the touch point is within the bounds of the cell layout, we can return immediately 2729 cl.getMatrix().invert(mTempInverseMatrix); 2730 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2731 2732 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2733 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2734 return cl; 2735 } 2736 2737 if (!exact && overlaps(cl, dragView, (int) originX, (int) originY, mTempInverseMatrix)) { 2738 // Get the center of the cell layout in screen coordinates 2739 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2740 cellLayoutCenter[0] = cl.getWidth()/2; 2741 cellLayoutCenter[1] = cl.getHeight()/2; 2742 mapPointFromChildToSelf(cl, cellLayoutCenter); 2743 2744 touchXy[0] = originX; 2745 touchXy[1] = originY; 2746 2747 // Calculate the distance between the center of the CellLayout 2748 // and the touch point 2749 float dist = squaredDistance(touchXy, cellLayoutCenter); 2750 2751 if (dist < smallestDistSoFar) { 2752 smallestDistSoFar = dist; 2753 bestMatchingScreen = cl; 2754 } 2755 } 2756 } 2757 return bestMatchingScreen; 2758 } 2759 2760 // This is used to compute the visual center of the dragView. This point is then 2761 // used to visualize drop locations and determine where to drop an item. The idea is that 2762 // the visual center represents the user's interpretation of where the item is, and hence 2763 // is the appropriate point to use when determining drop location. 2764 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2765 DragView dragView, float[] recycle) { 2766 float res[]; 2767 if (recycle == null) { 2768 res = new float[2]; 2769 } else { 2770 res = recycle; 2771 } 2772 2773 // First off, the drag view has been shifted in a way that is not represented in the 2774 // x and y values or the x/yOffsets. Here we account for that shift. 2775 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2776 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2777 2778 // These represent the visual top and left of drag view if a dragRect was provided. 2779 // If a dragRect was not provided, then they correspond to the actual view left and 2780 // top, as the dragRect is in that case taken to be the entire dragView. 2781 // R.dimen.dragViewOffsetY. 2782 int left = x - xOffset; 2783 int top = y - yOffset; 2784 2785 // In order to find the visual center, we shift by half the dragRect 2786 res[0] = left + dragView.getDragRegion().width() / 2; 2787 res[1] = top + dragView.getDragRegion().height() / 2; 2788 2789 return res; 2790 } 2791 2792 private boolean isDragWidget(DragObject d) { 2793 return (d.dragInfo instanceof LauncherAppWidgetInfo || 2794 d.dragInfo instanceof PendingAddWidgetInfo); 2795 } 2796 private boolean isExternalDragWidget(DragObject d) { 2797 return d.dragSource != this && isDragWidget(d); 2798 } 2799 2800 public void onDragOver(DragObject d) { 2801 // Skip drag over events while we are dragging over side pages 2802 if (mInScrollArea) return; 2803 if (mIsSwitchingState) return; 2804 2805 Rect r = new Rect(); 2806 CellLayout layout = null; 2807 ItemInfo item = (ItemInfo) d.dragInfo; 2808 2809 // Ensure that we have proper spans for the item that we are dropping 2810 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2811 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2812 d.dragView, mDragViewVisualCenter); 2813 2814 // Identify whether we have dragged over a side page 2815 if (isSmall()) { 2816 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 2817 mLauncher.getHotseat().getHitRect(r); 2818 if (r.contains(d.x, d.y)) { 2819 layout = mLauncher.getHotseat().getLayout(); 2820 } 2821 } 2822 if (layout == null) { 2823 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, true); 2824 } 2825 if (layout != mDragTargetLayout) { 2826 // Cancel all intermediate folder states 2827 cleanupFolderCreation(d); 2828 2829 if (mDragTargetLayout != null) { 2830 mDragTargetLayout.setIsDragOverlapping(false); 2831 mDragTargetLayout.onDragExit(); 2832 } 2833 mDragTargetLayout = layout; 2834 if (mDragTargetLayout != null) { 2835 mDragTargetLayout.setIsDragOverlapping(true); 2836 mDragTargetLayout.onDragEnter(); 2837 } else { 2838 mLastDragOverView = null; 2839 } 2840 2841 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 2842 if (isInSpringLoadedMode) { 2843 if (mLauncher.isHotseatLayout(layout)) { 2844 mSpringLoadedDragController.cancel(); 2845 } else { 2846 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2847 } 2848 } 2849 } 2850 } else { 2851 // Test to see if we are over the hotseat otherwise just use the current page 2852 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 2853 mLauncher.getHotseat().getHitRect(r); 2854 if (r.contains(d.x, d.y)) { 2855 layout = mLauncher.getHotseat().getLayout(); 2856 } 2857 } 2858 if (layout == null) { 2859 layout = getCurrentDropLayout(); 2860 } 2861 if (layout != mDragTargetLayout) { 2862 if (mDragTargetLayout != null) { 2863 mDragTargetLayout.setIsDragOverlapping(false); 2864 mDragTargetLayout.onDragExit(); 2865 } 2866 mDragTargetLayout = layout; 2867 mDragTargetLayout.setIsDragOverlapping(true); 2868 mDragTargetLayout.onDragEnter(); 2869 } 2870 } 2871 2872 // Handle the drag over 2873 if (mDragTargetLayout != null) { 2874 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2875 2876 // We want the point to be mapped to the dragTarget. 2877 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2878 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2879 } else { 2880 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2881 } 2882 ItemInfo info = (ItemInfo) d.dragInfo; 2883 2884 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2885 (int) mDragViewVisualCenter[1], 1, 1, mDragTargetLayout, mTargetCell); 2886 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2887 mTargetCell[1]); 2888 2889 boolean userFolderPending = willCreateUserFolder(info, mDragTargetLayout, 2890 mTargetCell, false); 2891 boolean isOverFolder = dragOverView instanceof FolderIcon; 2892 if (dragOverView != mLastDragOverView) { 2893 cancelFolderCreation(); 2894 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2895 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2896 } 2897 } 2898 2899 if (userFolderPending && dragOverView != mLastDragOverView) { 2900 mFolderCreationAlarm.setOnAlarmListener(new 2901 FolderCreationAlarmListener(mDragTargetLayout, mTargetCell[0], mTargetCell[1])); 2902 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2903 } 2904 2905 if (dragOverView != mLastDragOverView && isOverFolder) { 2906 ((FolderIcon) dragOverView).onDragEnter(d.dragInfo); 2907 if (mDragTargetLayout != null) { 2908 mDragTargetLayout.clearDragOutlines(); 2909 } 2910 } 2911 mLastDragOverView = dragOverView; 2912 2913 if (!mCreateUserFolderOnDrop && !isOverFolder) { 2914 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2915 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2916 item.spanX, item.spanY); 2917 } 2918 } 2919 } 2920 2921 private void cleanupFolderCreation(DragObject d) { 2922 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2923 mDragFolderRingAnimator.animateToNaturalState(); 2924 } 2925 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2926 if (d != null) { 2927 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2928 } 2929 } 2930 mFolderCreationAlarm.cancelAlarm(); 2931 } 2932 2933 private void cancelFolderCreation() { 2934 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2935 mDragFolderRingAnimator.animateToNaturalState(); 2936 } 2937 mCreateUserFolderOnDrop = false; 2938 mFolderCreationAlarm.cancelAlarm(); 2939 } 2940 2941 class FolderCreationAlarmListener implements OnAlarmListener { 2942 CellLayout layout; 2943 int cellX; 2944 int cellY; 2945 2946 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 2947 this.layout = layout; 2948 this.cellX = cellX; 2949 this.cellY = cellY; 2950 } 2951 2952 public void onAlarm(Alarm alarm) { 2953 if (mDragFolderRingAnimator == null) { 2954 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 2955 } 2956 mDragFolderRingAnimator.setCell(cellX, cellY); 2957 mDragFolderRingAnimator.setCellLayout(layout); 2958 mDragFolderRingAnimator.animateToAcceptState(); 2959 layout.showFolderAccept(mDragFolderRingAnimator); 2960 layout.clearDragOutlines(); 2961 mCreateUserFolderOnDrop = true; 2962 } 2963 } 2964 2965 @Override 2966 public void getHitRect(Rect outRect) { 2967 // We want the workspace to have the whole area of the display (it will find the correct 2968 // cell layout to drop to in the existing drag/drop logic. 2969 final Display d = mLauncher.getWindowManager().getDefaultDisplay(); 2970 outRect.set(0, 0, d.getWidth(), d.getHeight()); 2971 } 2972 2973 /** 2974 * Add the item specified by dragInfo to the given layout. 2975 * @return true if successful 2976 */ 2977 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2978 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2979 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2980 return true; 2981 } 2982 mLauncher.showOutOfSpaceMessage(); 2983 return false; 2984 } 2985 2986 private void onDropExternal(int[] touchXY, Object dragInfo, 2987 CellLayout cellLayout, boolean insertAtFirst) { 2988 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 2989 } 2990 2991 /** 2992 * Drop an item that didn't originate on one of the workspace screens. 2993 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2994 * come from another app altogether. 2995 * 2996 * NOTE: This can also be called when we are outside of a drag event, when we want 2997 * to add an item to one of the workspace screens. 2998 */ 2999 private void onDropExternal(final int[] touchXY, final Object dragInfo, 3000 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 3001 final Runnable exitSpringLoadedRunnable = new Runnable() { 3002 @Override 3003 public void run() { 3004 mLauncher.exitSpringLoadedDragModeDelayed(true, false); 3005 } 3006 }; 3007 3008 ItemInfo info = (ItemInfo) dragInfo; 3009 int spanX = info.spanX; 3010 int spanY = info.spanY; 3011 if (mDragInfo != null) { 3012 spanX = mDragInfo.spanX; 3013 spanY = mDragInfo.spanY; 3014 } 3015 3016 final long container = mLauncher.isHotseatLayout(cellLayout) ? 3017 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 3018 LauncherSettings.Favorites.CONTAINER_DESKTOP; 3019 final int screen = indexOfChild(cellLayout); 3020 if (!mLauncher.isHotseatLayout(cellLayout) && screen != mCurrentPage 3021 && mState != State.SPRING_LOADED) { 3022 snapToPage(screen); 3023 } 3024 3025 if (info instanceof PendingAddItemInfo) { 3026 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 3027 3028 boolean findNearestVacantCell = true; 3029 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 3030 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3031 cellLayout, mTargetCell); 3032 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, 3033 true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 3034 mDragTargetLayout, mTargetCell)) { 3035 findNearestVacantCell = false; 3036 } 3037 } 3038 if (findNearestVacantCell) { 3039 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], spanX, spanY, null, 3040 cellLayout, mTargetCell); 3041 } 3042 3043 Runnable onAnimationCompleteRunnable = new Runnable() { 3044 @Override 3045 public void run() { 3046 // When dragging and dropping from customization tray, we deal with creating 3047 // widgets/shortcuts/folders in a slightly different way 3048 switch (pendingInfo.itemType) { 3049 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 3050 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, 3051 container, screen, mTargetCell, null); 3052 break; 3053 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3054 mLauncher.processShortcutFromDrop(pendingInfo.componentName, 3055 container, screen, mTargetCell, null); 3056 break; 3057 default: 3058 throw new IllegalStateException("Unknown item type: " + 3059 pendingInfo.itemType); 3060 } 3061 cellLayout.onDragExit(); 3062 } 3063 }; 3064 3065 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 3066 // location and size on the home screen. 3067 int loc[] = new int[2]; 3068 cellLayout.cellToPoint(mTargetCell[0], mTargetCell[1], loc); 3069 3070 RectF r = new RectF(); 3071 cellLayout.cellToRect(mTargetCell[0], mTargetCell[1], spanX, spanY, r); 3072 setFinalTransitionTransform(cellLayout); 3073 float cellLayoutScale = 3074 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(cellLayout, loc); 3075 resetTransitionTransform(cellLayout); 3076 3077 float dragViewScale = r.width() / d.dragView.getMeasuredWidth(); 3078 // The animation will scale the dragView about its center, so we need to center about 3079 // the final location. 3080 loc[0] -= (d.dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 3081 loc[1] -= (d.dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 3082 3083 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, loc, 3084 dragViewScale * cellLayoutScale, onAnimationCompleteRunnable); 3085 } else { 3086 // This is for other drag/drop cases, like dragging from All Apps 3087 View view = null; 3088 3089 switch (info.itemType) { 3090 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 3091 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3092 if (info.container == NO_ID && info instanceof ApplicationInfo) { 3093 // Came from all apps -- make a copy 3094 info = new ShortcutInfo((ApplicationInfo) info, "12"); 3095 } 3096 view = mLauncher.createShortcut(R.layout.application, cellLayout, 3097 (ShortcutInfo) info); 3098 break; 3099 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 3100 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 3101 (FolderInfo) info, mIconCache); 3102 break; 3103 default: 3104 throw new IllegalStateException("Unknown item type: " + info.itemType); 3105 } 3106 3107 // First we find the cell nearest to point at which the item is 3108 // dropped, without any consideration to whether there is an item there. 3109 if (touchXY != null) { 3110 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3111 cellLayout, mTargetCell); 3112 d.postAnimationRunnable = exitSpringLoadedRunnable; 3113 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, true, 3114 d.dragView, d.postAnimationRunnable)) { 3115 return; 3116 } 3117 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, d, true)) { 3118 return; 3119 } 3120 } 3121 3122 if (touchXY != null) { 3123 // when dragging and dropping, just find the closest free spot 3124 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], 1, 1, null, 3125 cellLayout, mTargetCell); 3126 } else { 3127 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3128 } 3129 addInScreen(view, container, screen, mTargetCell[0], mTargetCell[1], info.spanX, 3130 info.spanY, insertAtFirst); 3131 cellLayout.onDropChild(view); 3132 cellLayout.animateDrop(); 3133 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 3134 cellLayout.getChildrenLayout().measureChild(view); 3135 3136 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, 3137 lp.cellX, lp.cellY); 3138 3139 if (d.dragView != null) { 3140 // We wrap the animation call in the temporary set and reset of the current 3141 // cellLayout to its final transform -- this means we animate the drag view to 3142 // the correct final location. 3143 setFinalTransitionTransform(cellLayout); 3144 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 3145 exitSpringLoadedRunnable); 3146 resetTransitionTransform(cellLayout); 3147 } 3148 } 3149 } 3150 3151 public void setFinalTransitionTransform(CellLayout layout) { 3152 if (isSwitchingState()) { 3153 int index = indexOfChild(layout); 3154 mCurrentScaleX = layout.getScaleX(); 3155 mCurrentScaleY = layout.getScaleY(); 3156 mCurrentTranslationX = layout.getTranslationX(); 3157 mCurrentTranslationY = layout.getTranslationY(); 3158 mCurrentRotationY = layout.getRotationY(); 3159 layout.setScaleX(mNewScaleXs[index]); 3160 layout.setScaleY(mNewScaleYs[index]); 3161 layout.setTranslationX(mNewTranslationXs[index]); 3162 layout.setTranslationY(mNewTranslationYs[index]); 3163 layout.setRotationY(mNewRotationYs[index]); 3164 } 3165 } 3166 public void resetTransitionTransform(CellLayout layout) { 3167 if (isSwitchingState()) { 3168 mCurrentScaleX = layout.getScaleX(); 3169 mCurrentScaleY = layout.getScaleY(); 3170 mCurrentTranslationX = layout.getTranslationX(); 3171 mCurrentTranslationY = layout.getTranslationY(); 3172 mCurrentRotationY = layout.getRotationY(); 3173 layout.setScaleX(mCurrentScaleX); 3174 layout.setScaleY(mCurrentScaleY); 3175 layout.setTranslationX(mCurrentTranslationX); 3176 layout.setTranslationY(mCurrentTranslationY); 3177 layout.setRotationY(mCurrentRotationY); 3178 } 3179 } 3180 3181 /** 3182 * Return the current {@link CellLayout}, correctly picking the destination 3183 * screen while a scroll is in progress. 3184 */ 3185 public CellLayout getCurrentDropLayout() { 3186 return (CellLayout) getChildAt(mNextPage == INVALID_PAGE ? mCurrentPage : mNextPage); 3187 } 3188 3189 /** 3190 * Return the current CellInfo describing our current drag; this method exists 3191 * so that Launcher can sync this object with the correct info when the activity is created/ 3192 * destroyed 3193 * 3194 */ 3195 public CellLayout.CellInfo getDragInfo() { 3196 return mDragInfo; 3197 } 3198 3199 /** 3200 * Calculate the nearest cell where the given object would be dropped. 3201 * 3202 * pixelX and pixelY should be in the coordinate system of layout 3203 */ 3204 private int[] findNearestVacantArea(int pixelX, int pixelY, 3205 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 3206 return layout.findNearestVacantArea( 3207 pixelX, pixelY, spanX, spanY, ignoreView, recycle); 3208 } 3209 3210 /** 3211 * Calculate the nearest cell where the given object would be dropped. 3212 * 3213 * pixelX and pixelY should be in the coordinate system of layout 3214 */ 3215 private int[] findNearestArea(int pixelX, int pixelY, 3216 int spanX, int spanY, CellLayout layout, int[] recycle) { 3217 return layout.findNearestArea( 3218 pixelX, pixelY, spanX, spanY, recycle); 3219 } 3220 3221 void setup(Launcher launcher, DragController dragController) { 3222 mLauncher = launcher; 3223 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3224 mDragController = dragController; 3225 3226 // hardware layers on children are enabled on startup, but should be disabled until 3227 // needed 3228 updateChildrenLayersEnabled(); 3229 setWallpaperDimension(); 3230 } 3231 3232 /** 3233 * Called at the end of a drag which originated on the workspace. 3234 */ 3235 public void onDropCompleted(View target, DragObject d, boolean success) { 3236 if (success) { 3237 if (target != this) { 3238 if (mDragInfo != null) { 3239 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 3240 if (mDragInfo.cell instanceof DropTarget) { 3241 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 3242 } 3243 } 3244 } 3245 } else if (mDragInfo != null) { 3246 // NOTE: When 'success' is true, onDragExit is called by the DragController before 3247 // calling onDropCompleted(). We call it ourselves here, but maybe this should be 3248 // moved into DragController.cancelDrag(). 3249 doDragExit(null); 3250 CellLayout cellLayout; 3251 if (mLauncher.isHotseatLayout(target)) { 3252 cellLayout = mLauncher.getHotseat().getLayout(); 3253 } else { 3254 cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3255 } 3256 cellLayout.onDropChild(mDragInfo.cell); 3257 } 3258 mDragOutline = null; 3259 mDragInfo = null; 3260 } 3261 3262 public boolean isDropEnabled() { 3263 return true; 3264 } 3265 3266 @Override 3267 protected void onRestoreInstanceState(Parcelable state) { 3268 super.onRestoreInstanceState(state); 3269 Launcher.setScreen(mCurrentPage); 3270 } 3271 3272 @Override 3273 public void scrollLeft() { 3274 if (!isSmall() && !mIsSwitchingState) { 3275 super.scrollLeft(); 3276 } 3277 Folder openFolder = getOpenFolder(); 3278 if (openFolder != null) { 3279 openFolder.completeDragExit(); 3280 } 3281 } 3282 3283 @Override 3284 public void scrollRight() { 3285 if (!isSmall() && !mIsSwitchingState) { 3286 super.scrollRight(); 3287 } 3288 Folder openFolder = getOpenFolder(); 3289 if (openFolder != null) { 3290 openFolder.completeDragExit(); 3291 } 3292 } 3293 3294 @Override 3295 public void onEnterScrollArea(int x, int y, int direction) { 3296 // Ignore the scroll area if we are dragging over the hot seat 3297 if (mLauncher.getHotseat() != null) { 3298 Rect r = new Rect(); 3299 mLauncher.getHotseat().getHitRect(r); 3300 if (r.contains(x, y)) { 3301 return; 3302 } 3303 } 3304 3305 if (!isSmall() && !mIsSwitchingState) { 3306 mInScrollArea = true; 3307 3308 final int page = mCurrentPage + (direction == DragController.SCROLL_LEFT ? -1 : 1); 3309 final CellLayout layout = (CellLayout) getChildAt(page); 3310 cancelFolderCreation(); 3311 3312 if (layout != null) { 3313 // Exit the current layout and mark the overlapping layout 3314 if (mDragTargetLayout != null) { 3315 mDragTargetLayout.setIsDragOverlapping(false); 3316 mDragTargetLayout.onDragExit(); 3317 } 3318 mDragTargetLayout = layout; 3319 mDragTargetLayout.setIsDragOverlapping(true); 3320 3321 // Workspace is responsible for drawing the edge glow on adjacent pages, 3322 // so we need to redraw the workspace when this may have changed. 3323 invalidate(); 3324 } 3325 } 3326 } 3327 3328 @Override 3329 public void onExitScrollArea() { 3330 if (mInScrollArea) { 3331 if (mDragTargetLayout != null) { 3332 // Unmark the overlapping layout and re-enter the current layout 3333 mDragTargetLayout.setIsDragOverlapping(false); 3334 mDragTargetLayout = getCurrentDropLayout(); 3335 mDragTargetLayout.onDragEnter(); 3336 3337 // Workspace is responsible for drawing the edge glow on adjacent pages, 3338 // so we need to redraw the workspace when this may have changed. 3339 invalidate(); 3340 } 3341 mInScrollArea = false; 3342 } 3343 } 3344 3345 private void onResetScrollArea() { 3346 if (mDragTargetLayout != null) { 3347 // Unmark the overlapping layout 3348 mDragTargetLayout.setIsDragOverlapping(false); 3349 3350 // Workspace is responsible for drawing the edge glow on adjacent pages, 3351 // so we need to redraw the workspace when this may have changed. 3352 invalidate(); 3353 } 3354 mInScrollArea = false; 3355 } 3356 3357 /** 3358 * Returns a specific CellLayout 3359 */ 3360 CellLayout getParentCellLayoutForView(View v) { 3361 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3362 for (CellLayout layout : layouts) { 3363 if (layout.getChildrenLayout().indexOfChild(v) > -1) { 3364 return layout; 3365 } 3366 } 3367 return null; 3368 } 3369 3370 /** 3371 * Returns a list of all the CellLayouts in the workspace. 3372 */ 3373 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3374 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3375 int screenCount = getChildCount(); 3376 for (int screen = 0; screen < screenCount; screen++) { 3377 layouts.add(((CellLayout) getChildAt(screen))); 3378 } 3379 if (mLauncher.getHotseat() != null) { 3380 layouts.add(mLauncher.getHotseat().getLayout()); 3381 } 3382 return layouts; 3383 } 3384 3385 /** 3386 * We should only use this to search for specific children. Do not use this method to modify 3387 * CellLayoutChildren directly. 3388 */ 3389 ArrayList<CellLayoutChildren> getWorkspaceAndHotseatCellLayoutChildren() { 3390 ArrayList<CellLayoutChildren> childrenLayouts = new ArrayList<CellLayoutChildren>(); 3391 int screenCount = getChildCount(); 3392 for (int screen = 0; screen < screenCount; screen++) { 3393 childrenLayouts.add(((CellLayout) getChildAt(screen)).getChildrenLayout()); 3394 } 3395 if (mLauncher.getHotseat() != null) { 3396 childrenLayouts.add(mLauncher.getHotseat().getLayout().getChildrenLayout()); 3397 } 3398 return childrenLayouts; 3399 } 3400 3401 public Folder getFolderForTag(Object tag) { 3402 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3403 for (CellLayoutChildren layout: childrenLayouts) { 3404 int count = layout.getChildCount(); 3405 for (int i = 0; i < count; i++) { 3406 View child = layout.getChildAt(i); 3407 if (child instanceof Folder) { 3408 Folder f = (Folder) child; 3409 if (f.getInfo() == tag && f.getInfo().opened) { 3410 return f; 3411 } 3412 } 3413 } 3414 } 3415 return null; 3416 } 3417 3418 public View getViewForTag(Object tag) { 3419 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3420 for (CellLayoutChildren layout: childrenLayouts) { 3421 int count = layout.getChildCount(); 3422 for (int i = 0; i < count; i++) { 3423 View child = layout.getChildAt(i); 3424 if (child.getTag() == tag) { 3425 return child; 3426 } 3427 } 3428 } 3429 return null; 3430 } 3431 3432 void clearDropTargets() { 3433 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3434 for (CellLayoutChildren layout: childrenLayouts) { 3435 int childCount = layout.getChildCount(); 3436 for (int j = 0; j < childCount; j++) { 3437 View v = layout.getChildAt(j); 3438 if (v instanceof DropTarget) { 3439 mDragController.removeDropTarget((DropTarget) v); 3440 } 3441 } 3442 } 3443 } 3444 3445 void removeItems(final ArrayList<ApplicationInfo> apps) { 3446 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3447 3448 final HashSet<String> packageNames = new HashSet<String>(); 3449 final int appCount = apps.size(); 3450 for (int i = 0; i < appCount; i++) { 3451 packageNames.add(apps.get(i).componentName.getPackageName()); 3452 } 3453 3454 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3455 for (final CellLayout layoutParent: cellLayouts) { 3456 final ViewGroup layout = layoutParent.getChildrenLayout(); 3457 3458 // Avoid ANRs by treating each screen separately 3459 post(new Runnable() { 3460 public void run() { 3461 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3462 childrenToRemove.clear(); 3463 3464 int childCount = layout.getChildCount(); 3465 for (int j = 0; j < childCount; j++) { 3466 final View view = layout.getChildAt(j); 3467 Object tag = view.getTag(); 3468 3469 if (tag instanceof ShortcutInfo) { 3470 final ShortcutInfo info = (ShortcutInfo) tag; 3471 final Intent intent = info.intent; 3472 final ComponentName name = intent.getComponent(); 3473 3474 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3475 for (String packageName: packageNames) { 3476 if (packageName.equals(name.getPackageName())) { 3477 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3478 childrenToRemove.add(view); 3479 } 3480 } 3481 } 3482 } else if (tag instanceof FolderInfo) { 3483 final FolderInfo info = (FolderInfo) tag; 3484 final ArrayList<ShortcutInfo> contents = info.contents; 3485 final int contentsCount = contents.size(); 3486 final ArrayList<ShortcutInfo> appsToRemoveFromFolder = 3487 new ArrayList<ShortcutInfo>(); 3488 3489 for (int k = 0; k < contentsCount; k++) { 3490 final ShortcutInfo appInfo = contents.get(k); 3491 final Intent intent = appInfo.intent; 3492 final ComponentName name = intent.getComponent(); 3493 3494 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3495 for (String packageName: packageNames) { 3496 if (packageName.equals(name.getPackageName())) { 3497 appsToRemoveFromFolder.add(appInfo); 3498 } 3499 } 3500 } 3501 } 3502 for (ShortcutInfo item: appsToRemoveFromFolder) { 3503 info.remove(item); 3504 LauncherModel.deleteItemFromDatabase(mLauncher, item); 3505 } 3506 } else if (tag instanceof LauncherAppWidgetInfo) { 3507 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3508 final AppWidgetProviderInfo provider = 3509 widgets.getAppWidgetInfo(info.appWidgetId); 3510 if (provider != null) { 3511 for (String packageName: packageNames) { 3512 if (packageName.equals(provider.provider.getPackageName())) { 3513 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3514 childrenToRemove.add(view); 3515 } 3516 } 3517 } 3518 } 3519 } 3520 3521 childCount = childrenToRemove.size(); 3522 for (int j = 0; j < childCount; j++) { 3523 View child = childrenToRemove.get(j); 3524 // Note: We can not remove the view directly from CellLayoutChildren as this 3525 // does not re-mark the spaces as unoccupied. 3526 layoutParent.removeViewInLayout(child); 3527 if (child instanceof DropTarget) { 3528 mDragController.removeDropTarget((DropTarget)child); 3529 } 3530 } 3531 3532 if (childCount > 0) { 3533 layout.requestLayout(); 3534 layout.invalidate(); 3535 } 3536 } 3537 }); 3538 } 3539 } 3540 3541 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3542 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3543 for (CellLayoutChildren layout: childrenLayouts) { 3544 int childCount = layout.getChildCount(); 3545 for (int j = 0; j < childCount; j++) { 3546 final View view = layout.getChildAt(j); 3547 Object tag = view.getTag(); 3548 if (tag instanceof ShortcutInfo) { 3549 ShortcutInfo info = (ShortcutInfo)tag; 3550 // We need to check for ACTION_MAIN otherwise getComponent() might 3551 // return null for some shortcuts (for instance, for shortcuts to 3552 // web pages.) 3553 final Intent intent = info.intent; 3554 final ComponentName name = intent.getComponent(); 3555 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3556 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3557 final int appCount = apps.size(); 3558 for (int k = 0; k < appCount; k++) { 3559 ApplicationInfo app = apps.get(k); 3560 if (app.componentName.equals(name)) { 3561 info.setIcon(mIconCache.getIcon(info.intent)); 3562 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 3563 new FastBitmapDrawable(info.getIcon(mIconCache)), 3564 null, null); 3565 } 3566 } 3567 } 3568 } 3569 } 3570 } 3571 } 3572 3573 void moveToDefaultScreen(boolean animate) { 3574 if (!isSmall()) { 3575 if (animate) { 3576 snapToPage(mDefaultPage); 3577 } else { 3578 setCurrentPage(mDefaultPage); 3579 } 3580 } 3581 getChildAt(mDefaultPage).requestFocus(); 3582 } 3583 3584 @Override 3585 public void syncPages() { 3586 } 3587 3588 @Override 3589 public void syncPageItems(int page, boolean immediate) { 3590 } 3591 3592 @Override 3593 protected String getCurrentPageDescription() { 3594 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 3595 return String.format(mContext.getString(R.string.workspace_scroll_format), 3596 page + 1, getChildCount()); 3597 } 3598 3599 public void getLocationInDragLayer(int[] loc) { 3600 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 3601 } 3602 3603 /** 3604 * Return true because we want the scrolling indicator to stretch to fit the space. 3605 */ 3606 protected boolean hasElasticScrollIndicator() { 3607 return true; 3608 } 3609 3610 void showDockDivider(boolean immediately) { 3611 final ViewGroup parent = (ViewGroup) getParent(); 3612 final View qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3613 final View dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3614 if (qsbDivider != null && dockDivider != null) { 3615 qsbDivider.setVisibility(View.VISIBLE); 3616 dockDivider.setVisibility(View.VISIBLE); 3617 if (mDividerAnimator != null) { 3618 mDividerAnimator.cancel(); 3619 mDividerAnimator = null; 3620 } 3621 if (immediately) { 3622 qsbDivider.setAlpha(1f); 3623 dockDivider.setAlpha(1f); 3624 } else { 3625 mDividerAnimator = new AnimatorSet(); 3626 mDividerAnimator.playTogether(ObjectAnimator.ofFloat(qsbDivider, "alpha", 1f), 3627 ObjectAnimator.ofFloat(dockDivider, "alpha", 1f)); 3628 mDividerAnimator.setDuration(sScrollIndicatorFadeInDuration); 3629 mDividerAnimator.start(); 3630 } 3631 } 3632 } 3633 3634 void hideDockDivider(boolean immediately) { 3635 final ViewGroup parent = (ViewGroup) getParent(); 3636 final View qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3637 final View dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3638 if (qsbDivider != null && dockDivider != null) { 3639 if (mDividerAnimator != null) { 3640 mDividerAnimator.cancel(); 3641 mDividerAnimator = null; 3642 } 3643 if (immediately) { 3644 qsbDivider.setVisibility(View.GONE); 3645 dockDivider.setVisibility(View.GONE); 3646 qsbDivider.setAlpha(0f); 3647 dockDivider.setAlpha(0f); 3648 } else { 3649 mDividerAnimator = new AnimatorSet(); 3650 mDividerAnimator.playTogether(ObjectAnimator.ofFloat(qsbDivider, "alpha", 0f), 3651 ObjectAnimator.ofFloat(dockDivider, "alpha", 0f)); 3652 mDividerAnimator.addListener(new AnimatorListenerAdapter() { 3653 private boolean cancelled = false; 3654 @Override 3655 public void onAnimationCancel(android.animation.Animator animation) { 3656 cancelled = true; 3657 } 3658 @Override 3659 public void onAnimationEnd(android.animation.Animator animation) { 3660 if (!cancelled) { 3661 qsbDivider.setVisibility(View.GONE); 3662 dockDivider.setVisibility(View.GONE); 3663 } 3664 } 3665 }); 3666 mDividerAnimator.setDuration(sScrollIndicatorFadeOutDuration); 3667 mDividerAnimator.start(); 3668 } 3669 } 3670 } 3671} 3672