Workspace.java revision 00618753e9f0ad941c13efb0b6804e4a06ecb076
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.AnimatorListenerAdapter; 21import android.animation.AnimatorSet; 22import android.animation.ObjectAnimator; 23import android.animation.TimeInterpolator; 24import android.animation.ValueAnimator; 25import android.animation.Animator.AnimatorListener; 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.pm.PackageManager; 37import android.content.res.Resources; 38import android.content.res.TypedArray; 39import android.graphics.Bitmap; 40import android.graphics.Camera; 41import android.graphics.Canvas; 42import android.graphics.Color; 43import android.graphics.Matrix; 44import android.graphics.Paint; 45import android.graphics.Rect; 46import android.graphics.RectF; 47import android.graphics.Region.Op; 48import android.graphics.drawable.Drawable; 49import android.os.IBinder; 50import android.os.Parcelable; 51import android.util.AttributeSet; 52import android.util.DisplayMetrics; 53import android.util.Log; 54import android.util.Pair; 55import android.view.Display; 56import android.view.DragEvent; 57import android.view.MotionEvent; 58import android.view.View; 59import android.view.ViewGroup; 60import android.view.animation.DecelerateInterpolator; 61import android.widget.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 // These animators are used to fade the children's outlines 100 private ObjectAnimator mChildrenOutlineFadeInAnimation; 101 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 102 private float mChildrenOutlineAlpha = 0; 103 104 // These properties refer to the background protection gradient used for AllApps and Customize 105 private ValueAnimator mBackgroundFadeInAnimation; 106 private ValueAnimator mBackgroundFadeOutAnimation; 107 private Drawable mBackground; 108 boolean mDrawBackground = true; 109 private float mBackgroundAlpha = 0; 110 private float mOverScrollMaxBackgroundAlpha = 0.0f; 111 private int mOverScrollPageIndex = -1; 112 113 private final WallpaperManager mWallpaperManager; 114 private IBinder mWindowToken; 115 116 private int mDefaultPage; 117 118 /** 119 * CellInfo for the cell that is currently being dragged 120 */ 121 private CellLayout.CellInfo mDragInfo; 122 123 /** 124 * Target drop area calculated during last acceptDrop call. 125 */ 126 private int[] mTargetCell = new int[2]; 127 128 /** 129 * The CellLayout that is currently being dragged over 130 */ 131 private CellLayout mDragTargetLayout = null; 132 133 private Launcher mLauncher; 134 private IconCache mIconCache; 135 private DragController mDragController; 136 137 // These are temporary variables to prevent having to allocate a new object just to 138 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 139 private int[] mTempCell = new int[2]; 140 private int[] mTempEstimate = new int[2]; 141 private float[] mDragViewVisualCenter = new float[2]; 142 private float[] mTempDragCoordinates = new float[2]; 143 private float[] mTempTouchCoordinates = new float[2]; 144 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 145 private float[] mTempDragBottomRightCoordinates = new float[2]; 146 private Matrix mTempInverseMatrix = new Matrix(); 147 148 private SpringLoadedDragController mSpringLoadedDragController; 149 private float mSpringLoadedShrinkFactor; 150 151 private static final int DEFAULT_CELL_COUNT_X = 4; 152 private static final int DEFAULT_CELL_COUNT_Y = 4; 153 154 // State variable that indicates whether the pages are small (ie when you're 155 // in all apps or customize mode) 156 157 enum State { NORMAL, SPRING_LOADED, SMALL }; 158 private State mState; 159 private boolean mIsSwitchingState = false; 160 161 private boolean mSwitchStateAfterFirstLayout = false; 162 private State mStateAfterFirstLayout; 163 164 private AnimatorSet mAnimator; 165 private AnimatorListener mShrinkAnimationListener; 166 private AnimatorListener mUnshrinkAnimationListener; 167 168 boolean mAnimatingViewIntoPlace = false; 169 boolean mIsDragOccuring = false; 170 boolean mChildrenLayersEnabled = true; 171 172 /** Is the user is dragging an item near the edge of a page? */ 173 private boolean mInScrollArea = false; 174 175 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 176 private Bitmap mDragOutline = null; 177 private final Rect mTempRect = new Rect(); 178 private final int[] mTempXY = new int[2]; 179 180 // Paint used to draw external drop outline 181 private final Paint mExternalDragOutlinePaint = new Paint(); 182 183 // Camera and Matrix used to determine the final position of a neighboring CellLayout 184 private final Matrix mMatrix = new Matrix(); 185 private final Camera mCamera = new Camera(); 186 private final float mTempFloat2[] = new float[2]; 187 188 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 189 int mWallpaperWidth; 190 int mWallpaperHeight; 191 WallpaperOffsetInterpolator mWallpaperOffset; 192 boolean mUpdateWallpaperOffsetImmediately = false; 193 boolean mSyncWallpaperOffsetWithScroll = true; 194 private Runnable mDelayedResizeRunnable; 195 196 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 197 private static final int FOLDER_CREATION_TIMEOUT = 250; 198 private final Alarm mFolderCreationAlarm = new Alarm(); 199 private FolderRingAnimator mDragFolderRingAnimator = null; 200 private View mLastDragOverView = null; 201 private boolean mCreateUserFolderOnDrop = false; 202 203 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 204 private float mXDown; 205 private float mYDown; 206 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 207 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 208 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 209 210 /** 211 * Used to inflate the Workspace from XML. 212 * 213 * @param context The application's context. 214 * @param attrs The attributes set containing the Workspace's customization values. 215 */ 216 public Workspace(Context context, AttributeSet attrs) { 217 this(context, attrs, 0); 218 } 219 220 /** 221 * Used to inflate the Workspace from XML. 222 * 223 * @param context The application's context. 224 * @param attrs The attributes set containing the Workspace's customization values. 225 * @param defStyle Unused. 226 */ 227 public Workspace(Context context, AttributeSet attrs, int defStyle) { 228 super(context, attrs, defStyle); 229 mContentIsRefreshable = false; 230 231 // With workspace, data is available straight from the get-go 232 setDataIsReady(); 233 234 if (!LauncherApplication.isScreenLarge()) { 235 mFadeInAdjacentScreens = false; 236 } 237 238 mWallpaperManager = WallpaperManager.getInstance(context); 239 240 int cellCountX = DEFAULT_CELL_COUNT_X; 241 int cellCountY = DEFAULT_CELL_COUNT_Y; 242 243 TypedArray a = context.obtainStyledAttributes(attrs, 244 R.styleable.Workspace, defStyle, 0); 245 246 final Resources res = context.getResources(); 247 if (LauncherApplication.isScreenLarge()) { 248 // Determine number of rows/columns dynamically 249 // TODO: This code currently fails on tablets with an aspect ratio < 1.3. 250 // Around that ratio we should make cells the same size in portrait and 251 // landscape 252 TypedArray actionBarSizeTypedArray = 253 context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize }); 254 final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); 255 final float systemBarHeight = res.getDimension(R.dimen.status_bar_height); 256 final float smallestScreenDim = res.getConfiguration().smallestScreenWidthDp; 257 258 cellCountX = 1; 259 while (CellLayout.widthInPortrait(res, cellCountX + 1) <= smallestScreenDim) { 260 cellCountX++; 261 } 262 263 cellCountY = 1; 264 while (actionBarHeight + CellLayout.heightInLandscape(res, cellCountY + 1) 265 <= smallestScreenDim - systemBarHeight) { 266 cellCountY++; 267 } 268 } 269 270 mSpringLoadedShrinkFactor = 271 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 272 273 // if the value is manually specified, use that instead 274 cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX); 275 cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY); 276 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 277 a.recycle(); 278 279 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 280 setHapticFeedbackEnabled(false); 281 282 initWorkspace(); 283 284 // Disable multitouch across the workspace/all apps/customize tray 285 setMotionEventSplittingEnabled(true); 286 } 287 288 public void onDragStart(DragSource source, Object info, int dragAction) { 289 mIsDragOccuring = true; 290 updateChildrenLayersEnabled(); 291 mLauncher.lockScreenOrientation(); 292 } 293 294 public void onDragEnd() { 295 mIsDragOccuring = false; 296 updateChildrenLayersEnabled(); 297 mLauncher.unlockScreenOrientation(); 298 } 299 300 /** 301 * Initializes various states for this workspace. 302 */ 303 protected void initWorkspace() { 304 Context context = getContext(); 305 mCurrentPage = mDefaultPage; 306 Launcher.setScreen(mCurrentPage); 307 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 308 mIconCache = app.getIconCache(); 309 mExternalDragOutlinePaint.setAntiAlias(true); 310 setWillNotDraw(false); 311 312 try { 313 final Resources res = getResources(); 314 mBackground = res.getDrawable(R.drawable.apps_customize_bg); 315 } catch (Resources.NotFoundException e) { 316 // In this case, we will skip drawing background protection 317 } 318 319 mUnshrinkAnimationListener = new AnimatorListenerAdapter() { 320 @Override 321 public void onAnimationStart(Animator animation) { 322 mIsSwitchingState = true; 323 } 324 325 @Override 326 public void onAnimationEnd(Animator animation) { 327 mIsSwitchingState = false; 328 mSyncWallpaperOffsetWithScroll = true; 329 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 330 mAnimator = null; 331 updateChildrenLayersEnabled(); 332 } 333 }; 334 mShrinkAnimationListener = new AnimatorListenerAdapter() { 335 @Override 336 public void onAnimationStart(Animator animation) { 337 mIsSwitchingState = true; 338 } 339 @Override 340 public void onAnimationEnd(Animator animation) { 341 mIsSwitchingState = false; 342 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 343 mAnimator = null; 344 } 345 }; 346 mSnapVelocity = 600; 347 mWallpaperOffset = new WallpaperOffsetInterpolator(); 348 } 349 350 @Override 351 protected int getScrollMode() { 352 return SmoothPagedView.X_LARGE_MODE; 353 } 354 355 private void onAddView(View child) { 356 if (!(child instanceof CellLayout)) { 357 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 358 } 359 CellLayout cl = ((CellLayout) child); 360 cl.setOnInterceptTouchListener(this); 361 cl.setClickable(true); 362 cl.enableHardwareLayers(); 363 } 364 365 @Override 366 public void addView(View child, int index, LayoutParams params) { 367 onAddView(child); 368 super.addView(child, index, params); 369 } 370 371 @Override 372 public void addView(View child) { 373 onAddView(child); 374 super.addView(child); 375 } 376 377 @Override 378 public void addView(View child, int index) { 379 onAddView(child); 380 super.addView(child, index); 381 } 382 383 @Override 384 public void addView(View child, int width, int height) { 385 onAddView(child); 386 super.addView(child, width, height); 387 } 388 389 @Override 390 public void addView(View child, LayoutParams params) { 391 onAddView(child); 392 super.addView(child, params); 393 } 394 395 /** 396 * @return The open folder on the current screen, or null if there is none 397 */ 398 Folder getOpenFolder() { 399 DragLayer dragLayer = mLauncher.getDragLayer(); 400 int count = dragLayer.getChildCount(); 401 for (int i = 0; i < count; i++) { 402 View child = dragLayer.getChildAt(i); 403 if (child instanceof Folder) { 404 Folder folder = (Folder) child; 405 if (folder.getInfo().opened) 406 return folder; 407 } 408 } 409 return null; 410 } 411 412 boolean isTouchActive() { 413 return mTouchState != TOUCH_STATE_REST; 414 } 415 416 /** 417 * Adds the specified child in the specified screen. The position and dimension of 418 * the child are defined by x, y, spanX and spanY. 419 * 420 * @param child The child to add in one of the workspace's screens. 421 * @param screen The screen in which to add the child. 422 * @param x The X position of the child in the screen's grid. 423 * @param y The Y position of the child in the screen's grid. 424 * @param spanX The number of cells spanned horizontally by the child. 425 * @param spanY The number of cells spanned vertically by the child. 426 */ 427 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY) { 428 addInScreen(child, container, screen, x, y, spanX, spanY, false); 429 } 430 431 /** 432 * Adds the specified child in the specified screen. The position and dimension of 433 * the child are defined by x, y, spanX and spanY. 434 * 435 * @param child The child to add in one of the workspace's screens. 436 * @param screen The screen in which to add the child. 437 * @param x The X position of the child in the screen's grid. 438 * @param y The Y position of the child in the screen's grid. 439 * @param spanX The number of cells spanned horizontally by the child. 440 * @param spanY The number of cells spanned vertically by the child. 441 * @param insert When true, the child is inserted at the beginning of the children list. 442 */ 443 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY, 444 boolean insert) { 445 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 446 if (screen < 0 || screen >= getChildCount()) { 447 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 448 + " (was " + screen + "); skipping child"); 449 return; 450 } 451 } 452 453 final CellLayout layout; 454 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 455 layout = mLauncher.getHotseat().getLayout(); 456 457 if (screen < 0) { 458 screen = mLauncher.getHotseat().getOrderInHotseat(x, y); 459 } else { 460 // Note: We do this to ensure that the hotseat is always laid out in the orientation 461 // of the hotseat in order regardless of which orientation they were added 462 x = mLauncher.getHotseat().getCellXFromOrder(screen); 463 y = mLauncher.getHotseat().getCellYFromOrder(screen); 464 } 465 } else { 466 layout = (CellLayout) getChildAt(screen); 467 } 468 469 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 470 if (lp == null) { 471 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 472 } else { 473 lp.cellX = x; 474 lp.cellY = y; 475 lp.cellHSpan = spanX; 476 lp.cellVSpan = spanY; 477 } 478 479 if (spanX < 0 && spanY < 0) { 480 lp.isLockedToGrid = false; 481 } 482 483 // Get the canonical child id to uniquely represent this view in this screen 484 int childId = LauncherModel.getCellLayoutChildId(container, screen, x, y, spanX, spanY); 485 boolean markCellsAsOccupied = !(child instanceof Folder); 486 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 487 // TODO: This branch occurs when the workspace is adding views 488 // outside of the defined grid 489 // maybe we should be deleting these items from the LauncherModel? 490 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 491 } 492 493 if (!(child instanceof Folder)) { 494 child.setHapticFeedbackEnabled(false); 495 child.setOnLongClickListener(mLongClickListener); 496 } 497 if (child instanceof DropTarget) { 498 mDragController.addDropTarget((DropTarget) child); 499 } 500 } 501 502 /** 503 * Check if the point (x, y) hits a given page. 504 */ 505 private boolean hitsPage(int index, float x, float y) { 506 final View page = getChildAt(index); 507 if (page != null) { 508 float[] localXY = { x, y }; 509 mapPointFromSelfToChild(page, localXY); 510 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 511 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 512 } 513 return false; 514 } 515 516 @Override 517 protected boolean hitsPreviousPage(float x, float y) { 518 // mNextPage is set to INVALID_PAGE whenever we are stationary. 519 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 520 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 521 return hitsPage(current - 1, x, y); 522 } 523 524 @Override 525 protected boolean hitsNextPage(float x, float y) { 526 // mNextPage is set to INVALID_PAGE whenever we are stationary. 527 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 528 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 529 return hitsPage(current + 1, x, y); 530 } 531 532 /** 533 * Called directly from a CellLayout (not by the framework), after we've been added as a 534 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 535 * that it should intercept touch events, which is not something that is normally supported. 536 */ 537 @Override 538 public boolean onTouch(View v, MotionEvent event) { 539 return (isSmall() || mIsSwitchingState); 540 } 541 542 protected void onWindowVisibilityChanged (int visibility) { 543 mLauncher.onWindowVisibilityChanged(visibility); 544 } 545 546 @Override 547 public boolean dispatchUnhandledMove(View focused, int direction) { 548 if (isSmall() || mIsSwitchingState) { 549 // when the home screens are shrunken, shouldn't allow side-scrolling 550 return false; 551 } 552 return super.dispatchUnhandledMove(focused, direction); 553 } 554 555 @Override 556 public boolean onInterceptTouchEvent(MotionEvent ev) { 557 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 558 mXDown = ev.getX(); 559 mYDown = ev.getY(); 560 } 561 562 return super.onInterceptTouchEvent(ev); 563 } 564 565 @Override 566 protected void determineScrollingStart(MotionEvent ev) { 567 if (!isSmall() && !mIsSwitchingState) { 568 float deltaX = Math.abs(ev.getX() - mXDown); 569 float deltaY = Math.abs(ev.getY() - mYDown); 570 571 if (Float.compare(deltaX, 0f) == 0) return; 572 573 float slope = deltaY / deltaX; 574 float theta = (float) Math.atan(slope); 575 576 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 577 cancelCurrentPageLongPress(); 578 } 579 580 if (theta > MAX_SWIPE_ANGLE) { 581 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 582 return; 583 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 584 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 585 // increase the touch slop to make it harder to begin scrolling the workspace. This 586 // results in vertically scrolling widgets to more easily. The higher the angle, the 587 // more we increase touch slop. 588 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 589 float extraRatio = (float) 590 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 591 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 592 } else { 593 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 594 super.determineScrollingStart(ev); 595 } 596 } 597 } 598 599 @Override 600 protected boolean isScrollingIndicatorEnabled() { 601 return mState != State.SPRING_LOADED; 602 } 603 604 protected void onPageBeginMoving() { 605 super.onPageBeginMoving(); 606 607 if (isHardwareAccelerated()) { 608 updateChildrenLayersEnabled(); 609 } else { 610 if (mNextPage != INVALID_PAGE) { 611 // we're snapping to a particular screen 612 enableChildrenCache(mCurrentPage, mNextPage); 613 } else { 614 // this is when user is actively dragging a particular screen, they might 615 // swipe it either left or right (but we won't advance by more than one screen) 616 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 617 } 618 } 619 620 // Only show page outlines as we pan if we are on large screen 621 if (LauncherApplication.isScreenLarge()) { 622 showOutlines(); 623 } 624 } 625 626 protected void onPageEndMoving() { 627 super.onPageEndMoving(); 628 629 if (isHardwareAccelerated()) { 630 updateChildrenLayersEnabled(); 631 } else { 632 clearChildrenCache(); 633 } 634 635 // Hide the outlines, as long as we're not dragging 636 if (!mDragController.dragging()) { 637 // Only hide page outlines as we pan if we are on large screen 638 if (LauncherApplication.isScreenLarge()) { 639 hideOutlines(); 640 } 641 } 642 mOverScrollMaxBackgroundAlpha = 0.0f; 643 mOverScrollPageIndex = -1; 644 645 if (mDelayedResizeRunnable != null) { 646 mDelayedResizeRunnable.run(); 647 mDelayedResizeRunnable = null; 648 } 649 } 650 651 @Override 652 protected void notifyPageSwitchListener() { 653 super.notifyPageSwitchListener(); 654 Launcher.setScreen(mCurrentPage); 655 }; 656 657 // As a ratio of screen height, the total distance we want the parallax effect to span 658 // vertically 659 private float wallpaperTravelToScreenHeightRatio(int width, int height) { 660 return 1.1f; 661 } 662 663 // As a ratio of screen height, the total distance we want the parallax effect to span 664 // horizontally 665 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 666 float aspectRatio = width / (float) height; 667 668 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 669 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 670 // We will use these two data points to extrapolate how much the wallpaper parallax effect 671 // to span (ie travel) at any aspect ratio: 672 673 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 674 final float ASPECT_RATIO_PORTRAIT = 10/16f; 675 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 676 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 677 678 // To find out the desired width at different aspect ratios, we use the following two 679 // formulas, where the coefficient on x is the aspect ratio (width/height): 680 // (16/10)x + y = 1.5 681 // (10/16)x + y = 1.2 682 // We solve for x and y and end up with a final formula: 683 final float x = 684 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 685 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 686 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 687 return x * aspectRatio + y; 688 } 689 690 // The range of scroll values for Workspace 691 private int getScrollRange() { 692 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 693 } 694 695 protected void setWallpaperDimension() { 696 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 697 DisplayMetrics displayMetrics = new DisplayMetrics(); 698 display.getRealMetrics(displayMetrics); 699 final int maxDim = Math.max(displayMetrics.widthPixels, displayMetrics.heightPixels); 700 final int minDim = Math.min(displayMetrics.widthPixels, displayMetrics.heightPixels); 701 702 // We need to ensure that there is enough extra space in the wallpaper for the intended 703 // parallax effects 704 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 705 mWallpaperHeight = (int)(maxDim * wallpaperTravelToScreenHeightRatio(maxDim, minDim)); 706 new Thread("setWallpaperDimension") { 707 public void run() { 708 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 709 } 710 }.start(); 711 } 712 713 public void setVerticalWallpaperOffset(float offset) { 714 mWallpaperOffset.setFinalY(offset); 715 } 716 public float getVerticalWallpaperOffset() { 717 return mWallpaperOffset.getCurrY(); 718 } 719 public void setHorizontalWallpaperOffset(float offset) { 720 mWallpaperOffset.setFinalX(offset); 721 } 722 public float getHorizontalWallpaperOffset() { 723 return mWallpaperOffset.getCurrX(); 724 } 725 726 private float wallpaperOffsetForCurrentScroll() { 727 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 728 final boolean isStaticWallpaper = (mWallpaperManager.getWallpaperInfo() == null); 729 // The wallpaper travel width is how far, from left to right, the wallpaper will move 730 // at this orientation (for example, in portrait mode we don't move all the way to the 731 // edges of the wallpaper, or otherwise the parallax effect would be too strong) 732 int wallpaperTravelWidth = (int) (display.getWidth() * 733 wallpaperTravelToScreenWidthRatio(display.getWidth(), display.getHeight())); 734 if (!isStaticWallpaper) { 735 wallpaperTravelWidth = mWallpaperWidth; 736 } 737 738 // Set wallpaper offset steps (1 / (number of screens - 1)) 739 // We have 3 vertical offset states (centered, and then top/bottom aligned 740 // for all apps/customize) 741 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f / (3 - 1)); 742 743 int scrollRange = getScrollRange(); 744 float scrollProgressOffset = 0; 745 746 // Account for overscroll: you only see the absolute edge of the wallpaper if 747 // you overscroll as far as you can in landscape mode. Only do this for static wallpapers 748 // because live wallpapers (and probably 3rd party wallpaper providers) rely on the offset 749 // being even intervals from 0 to 1 (eg [0, 0.25, 0.5, 0.75, 1]) 750 if (isStaticWallpaper) { 751 int overscrollOffset = (int) (maxOverScroll() * display.getWidth()); 752 scrollProgressOffset += overscrollOffset / (float) getScrollRange(); 753 scrollRange += 2 * overscrollOffset; 754 } 755 756 float scrollProgress = 757 mScrollX / (float) scrollRange + scrollProgressOffset; 758 float offsetInDips = wallpaperTravelWidth * scrollProgress + 759 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 760 float offset = offsetInDips / (float) mWallpaperWidth; 761 return offset; 762 } 763 private void syncWallpaperOffsetWithScroll() { 764 final boolean enableWallpaperEffects = isHardwareAccelerated(); 765 if (enableWallpaperEffects) { 766 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 767 } 768 } 769 770 public void updateWallpaperOffsetImmediately() { 771 mUpdateWallpaperOffsetImmediately = true; 772 } 773 774 private void updateWallpaperOffsets() { 775 boolean updateNow = false; 776 boolean keepUpdating = true; 777 if (mUpdateWallpaperOffsetImmediately) { 778 updateNow = true; 779 keepUpdating = false; 780 mWallpaperOffset.jumpToFinal(); 781 mUpdateWallpaperOffsetImmediately = false; 782 } else { 783 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 784 } 785 if (updateNow) { 786 if (mWindowToken != null) { 787 mWallpaperManager.setWallpaperOffsets(mWindowToken, 788 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 789 } 790 } 791 if (keepUpdating) { 792 fastInvalidate(); 793 } 794 } 795 796 class WallpaperOffsetInterpolator { 797 float mFinalHorizontalWallpaperOffset = 0.0f; 798 float mFinalVerticalWallpaperOffset = 0.5f; 799 float mHorizontalWallpaperOffset = 0.0f; 800 float mVerticalWallpaperOffset = 0.5f; 801 long mLastWallpaperOffsetUpdateTime; 802 boolean mIsMovingFast; 803 boolean mOverrideHorizontalCatchupConstant; 804 float mHorizontalCatchupConstant = 0.35f; 805 float mVerticalCatchupConstant = 0.35f; 806 807 public WallpaperOffsetInterpolator() { 808 } 809 810 public void setOverrideHorizontalCatchupConstant(boolean override) { 811 mOverrideHorizontalCatchupConstant = override; 812 } 813 814 public void setHorizontalCatchupConstant(float f) { 815 mHorizontalCatchupConstant = f; 816 } 817 818 public void setVerticalCatchupConstant(float f) { 819 mVerticalCatchupConstant = f; 820 } 821 822 public boolean computeScrollOffset() { 823 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 824 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 825 mIsMovingFast = false; 826 return false; 827 } 828 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 829 boolean isLandscape = display.getWidth() > display.getHeight(); 830 831 long currentTime = System.currentTimeMillis(); 832 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 833 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 834 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 835 836 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 837 if (!mIsMovingFast && xdiff > 0.07) { 838 mIsMovingFast = true; 839 } 840 841 float fractionToCatchUpIn1MsHorizontal; 842 if (mOverrideHorizontalCatchupConstant) { 843 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 844 } else if (mIsMovingFast) { 845 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 846 } else { 847 // slow 848 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 849 } 850 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 851 852 fractionToCatchUpIn1MsHorizontal /= 33f; 853 fractionToCatchUpIn1MsVertical /= 33f; 854 855 final float UPDATE_THRESHOLD = 0.00001f; 856 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 857 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 858 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 859 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 860 if (jumpToFinalValue) { 861 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 862 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 863 } else { 864 float percentToCatchUpVertical = 865 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 866 float percentToCatchUpHorizontal = 867 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 868 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 869 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 870 } 871 872 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 873 return true; 874 } 875 876 public float getCurrX() { 877 return mHorizontalWallpaperOffset; 878 } 879 880 public float getFinalX() { 881 return mFinalHorizontalWallpaperOffset; 882 } 883 884 public float getCurrY() { 885 return mVerticalWallpaperOffset; 886 } 887 888 public float getFinalY() { 889 return mFinalVerticalWallpaperOffset; 890 } 891 892 public void setFinalX(float x) { 893 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 894 } 895 896 public void setFinalY(float y) { 897 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 898 } 899 900 public void jumpToFinal() { 901 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 902 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 903 } 904 } 905 906 @Override 907 public void computeScroll() { 908 super.computeScroll(); 909 if (mSyncWallpaperOffsetWithScroll) { 910 syncWallpaperOffsetWithScroll(); 911 } 912 } 913 914 void showOutlines() { 915 if (!isSmall() && !mIsSwitchingState) { 916 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 917 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 918 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 919 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 920 mChildrenOutlineFadeInAnimation.start(); 921 } 922 } 923 924 void hideOutlines() { 925 if (!isSmall() && !mIsSwitchingState) { 926 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 927 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 928 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 929 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 930 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 931 mChildrenOutlineFadeOutAnimation.start(); 932 } 933 } 934 935 public void showOutlinesTemporarily() { 936 if (!mIsPageMoving && !isTouchActive()) { 937 snapToPage(mCurrentPage); 938 } 939 } 940 941 public void setChildrenOutlineAlpha(float alpha) { 942 mChildrenOutlineAlpha = alpha; 943 for (int i = 0; i < getChildCount(); i++) { 944 CellLayout cl = (CellLayout) getChildAt(i); 945 cl.setBackgroundAlpha(alpha); 946 } 947 } 948 949 public float getChildrenOutlineAlpha() { 950 return mChildrenOutlineAlpha; 951 } 952 953 void disableBackground() { 954 mDrawBackground = false; 955 } 956 void enableBackground() { 957 mDrawBackground = true; 958 } 959 960 private void showBackgroundGradientForAllApps() { 961 showBackgroundGradient(); 962 } 963 964 private void showBackgroundGradient() { 965 if (mBackground == null) return; 966 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 967 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 968 mBackgroundFadeInAnimation = ValueAnimator.ofFloat(getBackgroundAlpha(), 1f); 969 mBackgroundFadeInAnimation.addUpdateListener(new AnimatorUpdateListener() { 970 public void onAnimationUpdate(ValueAnimator animation) { 971 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 972 } 973 }); 974 mBackgroundFadeInAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 975 mBackgroundFadeInAnimation.setDuration(BACKGROUND_FADE_IN_DURATION); 976 mBackgroundFadeInAnimation.start(); 977 } 978 979 private void hideBackgroundGradient(float finalAlpha) { 980 if (mBackground == null) return; 981 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 982 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 983 mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(getBackgroundAlpha(), finalAlpha); 984 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 985 public void onAnimationUpdate(ValueAnimator animation) { 986 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 987 } 988 }); 989 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 990 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 991 mBackgroundFadeOutAnimation.start(); 992 } 993 994 public void setBackgroundAlpha(float alpha) { 995 if (alpha != mBackgroundAlpha) { 996 mBackgroundAlpha = alpha; 997 invalidate(); 998 } 999 } 1000 1001 public float getBackgroundAlpha() { 1002 return mBackgroundAlpha; 1003 } 1004 1005 /** 1006 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 1007 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 1008 * as being larger. This method computes what offset the rotated view should be translated 1009 * in order to minimize this perceived gap. 1010 * @param degrees Angle of the view 1011 * @param width Width of the view 1012 * @param height Height of the view 1013 * @return Offset to be used in a View.setTranslationX() call 1014 */ 1015 private float getOffsetXForRotation(float degrees, int width, int height) { 1016 mMatrix.reset(); 1017 mCamera.save(); 1018 mCamera.rotateY(Math.abs(degrees)); 1019 mCamera.getMatrix(mMatrix); 1020 mCamera.restore(); 1021 1022 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 1023 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 1024 mTempFloat2[0] = width; 1025 mTempFloat2[1] = height; 1026 mMatrix.mapPoints(mTempFloat2); 1027 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 1028 } 1029 1030 float backgroundAlphaInterpolator(float r) { 1031 float pivotA = 0.1f; 1032 float pivotB = 0.4f; 1033 if (r < pivotA) { 1034 return 0; 1035 } else if (r > pivotB) { 1036 return 1.0f; 1037 } else { 1038 return (r - pivotA)/(pivotB - pivotA); 1039 } 1040 } 1041 1042 float overScrollBackgroundAlphaInterpolator(float r) { 1043 float threshold = 0.08f; 1044 1045 if (r > mOverScrollMaxBackgroundAlpha) { 1046 mOverScrollMaxBackgroundAlpha = r; 1047 } else if (r < mOverScrollMaxBackgroundAlpha) { 1048 r = mOverScrollMaxBackgroundAlpha; 1049 } 1050 1051 return Math.min(r / threshold, 1.0f); 1052 } 1053 1054 @Override 1055 protected void screenScrolled(int screenCenter) { 1056 super.screenScrolled(screenCenter); 1057 1058 // If the screen is not xlarge, then don't rotate the CellLayouts 1059 // NOTE: If we don't update the side pages alpha, then we should not hide the side pages. 1060 // see unshrink(). 1061 if (!LauncherApplication.isScreenLarge()) return; 1062 1063 final int halfScreenSize = getMeasuredWidth() / 2; 1064 1065 for (int i = 0; i < getChildCount(); i++) { 1066 CellLayout cl = (CellLayout) getChildAt(i); 1067 if (cl != null) { 1068 int totalDistance = getScaledMeasuredWidth(cl) + mPageSpacing; 1069 int delta = screenCenter - (getChildOffset(i) - 1070 getRelativeChildOffset(i) + halfScreenSize); 1071 1072 float scrollProgress = delta / (totalDistance * 1.0f); 1073 scrollProgress = Math.min(scrollProgress, 1.0f); 1074 scrollProgress = Math.max(scrollProgress, -1.0f); 1075 1076 // If the current page (i) is being overscrolled, we use a different 1077 // set of rules for setting the background alpha multiplier. 1078 if ((mScrollX < 0 && i == 0) || (mScrollX > mMaxScrollX && 1079 i == getChildCount() -1 )) { 1080 cl.setBackgroundAlphaMultiplier( 1081 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 1082 mOverScrollPageIndex = i; 1083 } else if (mOverScrollPageIndex != i) { 1084 cl.setBackgroundAlphaMultiplier( 1085 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1086 } 1087 1088 float rotation = WORKSPACE_ROTATION * scrollProgress; 1089 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1090 cl.setTranslationX(translationX); 1091 1092 cl.setRotationY(rotation); 1093 } 1094 } 1095 } 1096 1097 protected void onAttachedToWindow() { 1098 super.onAttachedToWindow(); 1099 mWindowToken = getWindowToken(); 1100 computeScroll(); 1101 mDragController.setWindowToken(mWindowToken); 1102 } 1103 1104 protected void onDetachedFromWindow() { 1105 mWindowToken = null; 1106 } 1107 1108 @Override 1109 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1110 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1111 mUpdateWallpaperOffsetImmediately = true; 1112 } 1113 super.onLayout(changed, left, top, right, bottom); 1114 1115 // if shrinkToBottom() is called on initialization, it has to be deferred 1116 // until after the first call to onLayout so that it has the correct width 1117 if (mSwitchStateAfterFirstLayout) { 1118 mSwitchStateAfterFirstLayout = false; 1119 // shrink can trigger a synchronous onLayout call, so we 1120 // post this to avoid a stack overflow / tangled onLayout calls 1121 post(new Runnable() { 1122 public void run() { 1123 shrink(mStateAfterFirstLayout, false); 1124 } 1125 }); 1126 } 1127 } 1128 1129 @Override 1130 protected void onDraw(Canvas canvas) { 1131 updateWallpaperOffsets(); 1132 1133 // Draw the background gradient if necessary 1134 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1135 int alpha = (int) (mBackgroundAlpha * 255); 1136 mBackground.setAlpha(alpha); 1137 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1138 getMeasuredHeight()); 1139 mBackground.draw(canvas); 1140 } 1141 1142 super.onDraw(canvas); 1143 } 1144 1145 @Override 1146 protected void dispatchDraw(Canvas canvas) { 1147 super.dispatchDraw(canvas); 1148 1149 if (mInScrollArea && !LauncherApplication.isScreenLarge()) { 1150 final int width = getWidth(); 1151 final int height = getHeight(); 1152 final int pageHeight = getChildAt(0).getHeight(); 1153 1154 // This determines the height of the glowing edge: 90% of the page height 1155 final int padding = (int) ((height - pageHeight) * 0.5f + pageHeight * 0.1f); 1156 1157 final CellLayout leftPage = (CellLayout) getChildAt(mCurrentPage - 1); 1158 final CellLayout rightPage = (CellLayout) getChildAt(mCurrentPage + 1); 1159 1160 if (leftPage != null && leftPage.getIsDragOverlapping()) { 1161 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left_holo); 1162 d.setBounds(mScrollX, padding, mScrollX + d.getIntrinsicWidth(), height - padding); 1163 d.draw(canvas); 1164 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 1165 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right_holo); 1166 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), padding, mScrollX + width, height - padding); 1167 d.draw(canvas); 1168 } 1169 } 1170 } 1171 1172 @Override 1173 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1174 if (!mLauncher.isAllAppsVisible()) { 1175 final Folder openFolder = getOpenFolder(); 1176 if (openFolder != null) { 1177 return openFolder.requestFocus(direction, previouslyFocusedRect); 1178 } else { 1179 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1180 } 1181 } 1182 return false; 1183 } 1184 1185 @Override 1186 public int getDescendantFocusability() { 1187 if (isSmall()) { 1188 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1189 } 1190 return super.getDescendantFocusability(); 1191 } 1192 1193 @Override 1194 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1195 if (!mLauncher.isAllAppsVisible()) { 1196 final Folder openFolder = getOpenFolder(); 1197 if (openFolder != null) { 1198 openFolder.addFocusables(views, direction); 1199 } else { 1200 super.addFocusables(views, direction, focusableMode); 1201 } 1202 } 1203 } 1204 1205 public boolean isSmall() { 1206 return mState == State.SMALL || mState == State.SPRING_LOADED; 1207 } 1208 1209 void enableChildrenCache(int fromPage, int toPage) { 1210 if (fromPage > toPage) { 1211 final int temp = fromPage; 1212 fromPage = toPage; 1213 toPage = temp; 1214 } 1215 1216 final int screenCount = getChildCount(); 1217 1218 fromPage = Math.max(fromPage, 0); 1219 toPage = Math.min(toPage, screenCount - 1); 1220 1221 for (int i = fromPage; i <= toPage; i++) { 1222 final CellLayout layout = (CellLayout) getChildAt(i); 1223 layout.setChildrenDrawnWithCacheEnabled(true); 1224 layout.setChildrenDrawingCacheEnabled(true); 1225 } 1226 } 1227 1228 void clearChildrenCache() { 1229 final int screenCount = getChildCount(); 1230 for (int i = 0; i < screenCount; i++) { 1231 final CellLayout layout = (CellLayout) getChildAt(i); 1232 layout.setChildrenDrawnWithCacheEnabled(false); 1233 } 1234 } 1235 1236 private boolean childLayersEnabled() { 1237 boolean isSmallOrSpringloaded = 1238 isSmall() || mIsSwitchingState || mState == State.SPRING_LOADED; 1239 return isSmallOrSpringloaded || isPageMoving() || mIsDragOccuring; 1240 } 1241 1242 private void updateChildrenLayersEnabled() { 1243 boolean small = 1244 isSmall() || mIsSwitchingState || mState == State.SPRING_LOADED; 1245 boolean dragging = mAnimatingViewIntoPlace || mIsDragOccuring; 1246 boolean enableChildrenLayers = small || dragging || isPageMoving(); 1247 1248 if (enableChildrenLayers != mChildrenLayersEnabled) { 1249 mChildrenLayersEnabled = enableChildrenLayers; 1250 for (int i = 0; i < getPageCount(); i++) { 1251 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(enableChildrenLayers); 1252 } 1253 } 1254 } 1255 1256 @Override 1257 protected void onWallpaperTap(MotionEvent ev) { 1258 final int[] position = mTempCell; 1259 getLocationOnScreen(position); 1260 1261 int pointerIndex = ev.getActionIndex(); 1262 position[0] += (int) ev.getX(pointerIndex); 1263 position[1] += (int) ev.getY(pointerIndex); 1264 1265 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1266 ev.getAction() == MotionEvent.ACTION_UP 1267 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1268 position[0], position[1], 0, null); 1269 } 1270 1271 private float getYScaleForScreen(int screen) { 1272 int x = Math.abs(screen - 2); 1273 1274 // TODO: This should be generalized for use with arbitrary rotation angles. 1275 switch(x) { 1276 case 0: return EXTRA_SCALE_FACTOR_0; 1277 case 1: return EXTRA_SCALE_FACTOR_1; 1278 case 2: return EXTRA_SCALE_FACTOR_2; 1279 } 1280 return 1.0f; 1281 } 1282 1283 public void shrink(State shrinkState) { 1284 shrink(shrinkState, true); 1285 } 1286 1287 // we use this to shrink the workspace for the all apps view and the customize view 1288 public void shrink(State shrinkState, boolean animated) { 1289 if (mFirstLayout) { 1290 // (mFirstLayout == "first layout has not happened yet") 1291 // if we get a call to shrink() as part of our initialization (for example, if 1292 // Launcher is started in All Apps mode) then we need to wait for a layout call 1293 // to get our width so we can layout the mini-screen views correctly 1294 mSwitchStateAfterFirstLayout = true; 1295 mStateAfterFirstLayout = shrinkState; 1296 return; 1297 } 1298 1299 // Stop any scrolling, move to the current page right away 1300 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1301 1302 CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 1303 if (currentPage == null) { 1304 Log.w(TAG, "currentPage is NULL! mCurrentPage " + mCurrentPage 1305 + " mNextPage " + mNextPage); 1306 return; 1307 } 1308 if (currentPage.getBackgroundAlphaMultiplier() < 1.0f) { 1309 currentPage.setBackgroundAlpha(0.0f); 1310 } 1311 currentPage.setBackgroundAlphaMultiplier(1.0f); 1312 1313 mState = shrinkState; 1314 updateChildrenLayersEnabled(); 1315 1316 // we intercept and reject all touch events when we're small, so be sure to reset the state 1317 mTouchState = TOUCH_STATE_REST; 1318 mActivePointerId = INVALID_POINTER; 1319 1320 final Resources res = getResources(); 1321 final int screenWidth = getWidth(); 1322 final int screenHeight = getHeight(); 1323 1324 // How much the workspace shrinks when we enter all apps or customization mode 1325 final float shrinkFactor = res.getInteger(R.integer.config_workspaceShrinkPercent) / 100.0f; 1326 1327 // Making the assumption that all pages have the same width as the 0th 1328 final int pageWidth = getChildAt(0).getMeasuredWidth(); 1329 final int pageHeight = getChildAt(0).getMeasuredHeight(); 1330 1331 final int scaledPageWidth = (int) (shrinkFactor * pageWidth); 1332 final int scaledPageHeight = (int) (shrinkFactor * pageHeight); 1333 final float extraScaledSpacing = res.getDimension(R.dimen.smallScreenExtraSpacing); 1334 1335 final int screenCount = getChildCount(); 1336 float totalWidth = screenCount * scaledPageWidth + (screenCount - 1) * extraScaledSpacing; 1337 1338 boolean isPortrait = getMeasuredHeight() > getMeasuredWidth(); 1339 float y = (isPortrait ? 1340 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginPortrait) : 1341 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginLandscape)); 1342 float finalAlpha = 1.0f; 1343 float extraShrinkFactor = 1.0f; 1344 1345 // We shrink and disappear to nothing 1346 y = screenHeight - y - scaledPageHeight; 1347 finalAlpha = 0.0f; 1348 1349 int duration = res.getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1350 1351 // We animate all the screens to the centered position in workspace 1352 // At the same time, the screens become greyed/dimmed 1353 1354 // newX is initialized to the left-most position of the centered screens 1355 float x = mScroller.getFinalX() + screenWidth / 2 - totalWidth / 2; 1356 1357 // We are going to scale about the center of the view, so we need to adjust the positions 1358 // of the views accordingly 1359 x -= (pageWidth - scaledPageWidth) / 2.0f; 1360 y -= (pageHeight - scaledPageHeight) / 2.0f; 1361 1362 if (mAnimator != null) { 1363 mAnimator.cancel(); 1364 } 1365 1366 mAnimator = new AnimatorSet(); 1367 1368 final int childCount = getChildCount(); 1369 final float[] oldXs = new float[childCount]; 1370 final float[] oldYs = new float[childCount]; 1371 final float[] oldScaleXs = new float[childCount]; 1372 final float[] oldScaleYs = new float[childCount]; 1373 final float[] oldBackgroundAlphas = new float[childCount]; 1374 final float[] oldAlphas = new float[childCount]; 1375 final float[] oldRotationYs = new float[childCount]; 1376 final float[] newXs = new float[childCount]; 1377 final float[] newYs = new float[childCount]; 1378 final float[] newScaleXs = new float[childCount]; 1379 final float[] newScaleYs = new float[childCount]; 1380 final float[] newBackgroundAlphas = new float[childCount]; 1381 final float[] newAlphas = new float[childCount]; 1382 final float[] newRotationYs = new float[childCount]; 1383 1384 for (int i = 0; i < screenCount; i++) { 1385 final CellLayout cl = (CellLayout) getChildAt(i); 1386 1387 float rotation = (-i + 2) * WORKSPACE_ROTATION; 1388 float rotationScaleX = (float) (1.0f / Math.cos(Math.PI * rotation / 180.0f)); 1389 float rotationScaleY = getYScaleForScreen(i); 1390 1391 oldAlphas[i] = cl.getAlpha(); 1392 newAlphas[i] = finalAlpha; 1393 if (animated && (oldAlphas[i] != 0f || newAlphas[i] != 0f)) { 1394 // if the CellLayout will be visible during the animation, force building its 1395 // hardware layer immediately so we don't see a blip later in the animation 1396 cl.buildChildrenLayer(); 1397 } 1398 if (animated) { 1399 oldXs[i] = cl.getX(); 1400 oldYs[i] = cl.getY(); 1401 oldScaleXs[i] = cl.getScaleX(); 1402 oldScaleYs[i] = cl.getScaleY(); 1403 oldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1404 oldRotationYs[i] = cl.getRotationY(); 1405 newXs[i] = x; 1406 newYs[i] = y; 1407 newScaleXs[i] = shrinkFactor * rotationScaleX * extraShrinkFactor; 1408 newScaleYs[i] = shrinkFactor * rotationScaleY * extraShrinkFactor; 1409 newBackgroundAlphas[i] = finalAlpha; 1410 newRotationYs[i] = rotation; 1411 } else { 1412 cl.setX((int)x); 1413 cl.setY((int)y); 1414 cl.setScaleX(shrinkFactor * rotationScaleX * extraShrinkFactor); 1415 cl.setScaleY(shrinkFactor * rotationScaleY * extraShrinkFactor); 1416 cl.setBackgroundAlpha(finalAlpha); 1417 cl.setAlpha(finalAlpha); 1418 cl.setRotationY(rotation); 1419 mShrinkAnimationListener.onAnimationEnd(null); 1420 } 1421 // increment newX for the next screen 1422 x += scaledPageWidth + extraScaledSpacing; 1423 } 1424 1425 float wallpaperOffset = 0.5f; 1426 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 1427 int wallpaperTravelHeight = (int) (display.getHeight() * 1428 wallpaperTravelToScreenHeightRatio(display.getWidth(), display.getHeight())); 1429 float offsetFromCenter = (wallpaperTravelHeight / (float) mWallpaperHeight) / 2f; 1430 boolean isLandscape = display.getWidth() > display.getHeight(); 1431 1432 // on phones, don't scroll the wallpaper horizontally or vertically when switching 1433 // to/from all apps 1434 final boolean enableWallpaperEffects = 1435 isHardwareAccelerated() && LauncherApplication.isScreenLarge(); 1436 if (enableWallpaperEffects) { 1437 switch (shrinkState) { 1438 // animating in 1439 case SPRING_LOADED: 1440 wallpaperOffset = 0.5f; 1441 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.34f : 0.32f); 1442 break; 1443 case SMALL: 1444 // allapps 1445 wallpaperOffset = 0.5f - offsetFromCenter; 1446 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.34f : 0.32f); 1447 break; 1448 } 1449 } 1450 1451 setLayoutScale(1.0f); 1452 if (animated) { 1453 if (enableWallpaperEffects) { 1454 mWallpaperOffset.setHorizontalCatchupConstant(0.46f); 1455 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1456 } 1457 1458 mSyncWallpaperOffsetWithScroll = false; 1459 1460 ValueAnimator animWithInterpolator = 1461 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1462 animWithInterpolator.setInterpolator(mZoomOutInterpolator); 1463 1464 final float oldHorizontalWallpaperOffset = getHorizontalWallpaperOffset(); 1465 final float oldVerticalWallpaperOffset = getVerticalWallpaperOffset(); 1466 final float newHorizontalWallpaperOffset = 0.5f; 1467 final float newVerticalWallpaperOffset = wallpaperOffset; 1468 animWithInterpolator.addUpdateListener(new LauncherAnimatorUpdateListener() { 1469 public void onAnimationUpdate(float a, float b) { 1470 if (b == 0f) { 1471 // an optimization, and required for correct behavior. 1472 return; 1473 } 1474 invalidate(); 1475 if (enableWallpaperEffects) { 1476 setHorizontalWallpaperOffset( 1477 a * oldHorizontalWallpaperOffset + b * newHorizontalWallpaperOffset); 1478 setVerticalWallpaperOffset( 1479 a * oldVerticalWallpaperOffset + b * newVerticalWallpaperOffset); 1480 } 1481 for (int i = 0; i < screenCount; i++) { 1482 final CellLayout cl = (CellLayout) getChildAt(i); 1483 cl.fastInvalidate(); 1484 cl.setFastX(a * oldXs[i] + b * newXs[i]); 1485 cl.setFastY(a * oldYs[i] + b * newYs[i]); 1486 cl.setFastScaleX(a * oldScaleXs[i] + b * newScaleXs[i]); 1487 cl.setFastScaleY(a * oldScaleYs[i] + b * newScaleYs[i]); 1488 cl.setFastBackgroundAlpha( 1489 a * oldBackgroundAlphas[i] + b * newBackgroundAlphas[i]); 1490 cl.setFastAlpha(a * oldAlphas[i] + b * newAlphas[i]); 1491 cl.setFastRotationY(a * oldRotationYs[i] + b * newRotationYs[i]); 1492 } 1493 } 1494 }); 1495 mAnimator.playTogether(animWithInterpolator); 1496 mAnimator.addListener(mShrinkAnimationListener); 1497 mAnimator.start(); 1498 } else if (enableWallpaperEffects) { 1499 setVerticalWallpaperOffset(wallpaperOffset); 1500 setHorizontalWallpaperOffset(0.5f); 1501 updateWallpaperOffsetImmediately(); 1502 } 1503 setChildrenDrawnWithCacheEnabled(true); 1504 1505 showBackgroundGradientForAllApps(); 1506 } 1507 1508 /* 1509 * This interpolator emulates the rate at which the perceived scale of an object changes 1510 * as its distance from a camera increases. When this interpolator is applied to a scale 1511 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1512 * from the camera. 1513 */ 1514 static class ZInterpolator implements TimeInterpolator { 1515 private float focalLength; 1516 1517 public ZInterpolator(float foc) { 1518 focalLength = foc; 1519 } 1520 1521 public float getInterpolation(float input) { 1522 return (1.0f - focalLength / (focalLength + input)) / 1523 (1.0f - focalLength / (focalLength + 1.0f)); 1524 } 1525 } 1526 1527 /* 1528 * The exact reverse of ZInterpolator. 1529 */ 1530 static class InverseZInterpolator implements TimeInterpolator { 1531 private ZInterpolator zInterpolator; 1532 public InverseZInterpolator(float foc) { 1533 zInterpolator = new ZInterpolator(foc); 1534 } 1535 public float getInterpolation(float input) { 1536 return 1 - zInterpolator.getInterpolation(1 - input); 1537 } 1538 } 1539 1540 /* 1541 * ZInterpolator compounded with an ease-out. 1542 */ 1543 static class ZoomOutInterpolator implements TimeInterpolator { 1544 private final ZInterpolator zInterpolator = new ZInterpolator(0.2f); 1545 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(1.8f); 1546 1547 public float getInterpolation(float input) { 1548 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1549 } 1550 } 1551 1552 /* 1553 * InvereZInterpolator compounded with an ease-out. 1554 */ 1555 static class ZoomInInterpolator implements TimeInterpolator { 1556 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1557 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1558 1559 public float getInterpolation(float input) { 1560 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1561 } 1562 } 1563 1564 private final ZoomOutInterpolator mZoomOutInterpolator = new ZoomOutInterpolator(); 1565 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1566 1567 /* 1568 * 1569 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1570 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1571 * 1572 * These methods mark the appropriate pages as accepting drops (which alters their visual 1573 * appearance). 1574 * 1575 */ 1576 public void onDragStartedWithItem(View v) { 1577 final Canvas canvas = new Canvas(); 1578 1579 // We need to add extra padding to the bitmap to make room for the glow effect 1580 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1581 1582 // The outline is used to visualize where the item will land if dropped 1583 mDragOutline = createDragOutline(v, canvas, bitmapPadding); 1584 } 1585 1586 public void onDragStartedWithItemSpans(int spanX, int spanY, Bitmap b) { 1587 final Canvas canvas = new Canvas(); 1588 1589 // We need to add extra padding to the bitmap to make room for the glow effect 1590 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1591 1592 CellLayout cl = (CellLayout) getChildAt(0); 1593 1594 int[] size = cl.cellSpansToSize(spanX, spanY); 1595 1596 // The outline is used to visualize where the item will land if dropped 1597 mDragOutline = createDragOutline(b, canvas, bitmapPadding, size[0], size[1]); 1598 } 1599 1600 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1601 // never dragged over 1602 public void onDragStopped(boolean success) { 1603 // In the success case, DragController has already called onDragExit() 1604 if (!success) { 1605 doDragExit(null); 1606 } 1607 } 1608 1609 // We call this when we trigger an unshrink by clicking on the CellLayout cl 1610 public void unshrink(CellLayout clThatWasClicked) { 1611 unshrink(clThatWasClicked, false); 1612 } 1613 1614 public void unshrink(CellLayout clThatWasClicked, boolean springLoaded) { 1615 int newCurrentPage = indexOfChild(clThatWasClicked); 1616 if (isSmall()) { 1617 if (springLoaded) { 1618 setLayoutScale(mSpringLoadedShrinkFactor); 1619 } 1620 scrollToNewPageWithoutMovingPages(newCurrentPage); 1621 unshrink(true, springLoaded); 1622 } 1623 } 1624 1625 1626 public void enterSpringLoadedDragMode(CellLayout clThatWasClicked) { 1627 unshrink(clThatWasClicked, true); 1628 } 1629 1630 public void exitSpringLoadedDragMode(State shrinkState) { 1631 shrink(shrinkState); 1632 } 1633 1634 public void exitWidgetResizeMode() { 1635 DragLayer dragLayer = mLauncher.getDragLayer(); 1636 dragLayer.clearAllResizeFrames(); 1637 } 1638 1639 void unshrink(boolean animated) { 1640 unshrink(animated, false); 1641 } 1642 1643 void unshrink(boolean animated, boolean springLoaded) { 1644 if (isSmall()) { 1645 float finalScaleFactor = 1.0f; 1646 float finalBackgroundAlpha = 0.0f; 1647 if (springLoaded) { 1648 finalScaleFactor = mSpringLoadedShrinkFactor; 1649 finalBackgroundAlpha = 1.0f; 1650 mState = State.SPRING_LOADED; 1651 } else { 1652 mState = State.NORMAL; 1653 } 1654 if (mAnimator != null) { 1655 mAnimator.cancel(); 1656 } 1657 1658 mAnimator = new AnimatorSet(); 1659 final int screenCount = getChildCount(); 1660 1661 final int duration = getResources().getInteger(R.integer.config_workspaceUnshrinkTime); 1662 1663 final float[] oldTranslationXs = new float[getChildCount()]; 1664 final float[] oldTranslationYs = new float[getChildCount()]; 1665 final float[] oldScaleXs = new float[getChildCount()]; 1666 final float[] oldScaleYs = new float[getChildCount()]; 1667 final float[] oldBackgroundAlphas = new float[getChildCount()]; 1668 final float[] oldBackgroundAlphaMultipliers = new float[getChildCount()]; 1669 final float[] oldAlphas = new float[getChildCount()]; 1670 final float[] oldRotationYs = new float[getChildCount()]; 1671 final float[] newTranslationXs = new float[getChildCount()]; 1672 final float[] newTranslationYs = new float[getChildCount()]; 1673 final float[] newScaleXs = new float[getChildCount()]; 1674 final float[] newScaleYs = new float[getChildCount()]; 1675 final float[] newBackgroundAlphas = new float[getChildCount()]; 1676 final float[] newBackgroundAlphaMultipliers = new float[getChildCount()]; 1677 final float[] newAlphas = new float[getChildCount()]; 1678 final float[] newRotationYs = new float[getChildCount()]; 1679 1680 for (int i = 0; i < screenCount; i++) { 1681 final CellLayout cl = (CellLayout)getChildAt(i); 1682 float finalAlphaValue = 0f; 1683 float rotation = 0f; 1684 if (LauncherApplication.isScreenLarge()) { 1685 finalAlphaValue = (i == mCurrentPage) ? 1.0f : 0.0f; 1686 1687 if (i < mCurrentPage) { 1688 rotation = WORKSPACE_ROTATION; 1689 } else if (i > mCurrentPage) { 1690 rotation = -WORKSPACE_ROTATION; 1691 } 1692 } else { 1693 // Don't hide the side panes on the phone if we don't also update the side pages 1694 // alpha. See screenScrolled(). 1695 finalAlphaValue = 1f; 1696 } 1697 float finalAlphaMultiplierValue = 1f; 1698 1699 float translation = 0f; 1700 1701 // If the screen is not xlarge, then don't rotate the CellLayouts 1702 // NOTE: If we don't update the side pages alpha, then we should not hide the side 1703 // pages. see unshrink(). 1704 if (LauncherApplication.isScreenLarge()) { 1705 translation = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1706 } 1707 1708 oldAlphas[i] = cl.getAlpha(); 1709 newAlphas[i] = finalAlphaValue; 1710 if (animated) { 1711 oldTranslationXs[i] = cl.getTranslationX(); 1712 oldTranslationYs[i] = cl.getTranslationY(); 1713 oldScaleXs[i] = cl.getScaleX(); 1714 oldScaleYs[i] = cl.getScaleY(); 1715 oldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1716 oldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1717 oldRotationYs[i] = cl.getRotationY(); 1718 1719 newTranslationXs[i] = translation; 1720 newTranslationYs[i] = 0f; 1721 newScaleXs[i] = finalScaleFactor; 1722 newScaleYs[i] = finalScaleFactor; 1723 newBackgroundAlphas[i] = finalBackgroundAlpha; 1724 newBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1725 newRotationYs[i] = rotation; 1726 } else { 1727 cl.setTranslationX(translation); 1728 cl.setTranslationY(0.0f); 1729 cl.setScaleX(finalScaleFactor); 1730 cl.setScaleY(finalScaleFactor); 1731 cl.setBackgroundAlpha(0.0f); 1732 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1733 cl.setAlpha(finalAlphaValue); 1734 cl.setRotationY(rotation); 1735 mUnshrinkAnimationListener.onAnimationEnd(null); 1736 } 1737 } 1738 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 1739 boolean isLandscape = display.getWidth() > display.getHeight(); 1740 // on phones, don't scroll the wallpaper horizontally or vertically when switching 1741 // to/from all apps 1742 final boolean enableWallpaperEffects = 1743 isHardwareAccelerated() && LauncherApplication.isScreenLarge(); 1744 if (enableWallpaperEffects) { 1745 switch (mState) { 1746 // animating out 1747 case SPRING_LOADED: 1748 if (animated) { 1749 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.49f : 0.46f); 1750 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.49f : 0.46f); 1751 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1752 } 1753 break; 1754 case SMALL: 1755 // all apps 1756 if (animated) { 1757 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.65f : 0.65f); 1758 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.65f : 0.65f); 1759 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1760 } 1761 break; 1762 } 1763 } 1764 if (animated) { 1765 ValueAnimator animWithInterpolator = 1766 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1767 animWithInterpolator.setInterpolator(mZoomInInterpolator); 1768 1769 final float oldHorizontalWallpaperOffset = enableWallpaperEffects ? 1770 getHorizontalWallpaperOffset() : 0; 1771 final float oldVerticalWallpaperOffset = enableWallpaperEffects ? 1772 getVerticalWallpaperOffset() : 0; 1773 final float newHorizontalWallpaperOffset = enableWallpaperEffects ? 1774 wallpaperOffsetForCurrentScroll() : 0; 1775 final float newVerticalWallpaperOffset = enableWallpaperEffects ? 0.5f : 0; 1776 animWithInterpolator.addUpdateListener(new LauncherAnimatorUpdateListener() { 1777 public void onAnimationUpdate(float a, float b) { 1778 if (b == 0f) { 1779 // an optimization, but not required 1780 return; 1781 } 1782 invalidate(); 1783 if (enableWallpaperEffects) { 1784 setHorizontalWallpaperOffset(a * oldHorizontalWallpaperOffset 1785 + b * newHorizontalWallpaperOffset); 1786 setVerticalWallpaperOffset(a * oldVerticalWallpaperOffset 1787 + b * newVerticalWallpaperOffset); 1788 } 1789 for (int i = 0; i < screenCount; i++) { 1790 final CellLayout cl = (CellLayout) getChildAt(i); 1791 cl.fastInvalidate(); 1792 cl.setFastTranslationX( 1793 a * oldTranslationXs[i] + b * newTranslationXs[i]); 1794 cl.setFastTranslationY( 1795 a * oldTranslationYs[i] + b * newTranslationYs[i]); 1796 cl.setFastScaleX(a * oldScaleXs[i] + b * newScaleXs[i]); 1797 cl.setFastScaleY(a * oldScaleYs[i] + b * newScaleYs[i]); 1798 cl.setFastBackgroundAlpha( 1799 a * oldBackgroundAlphas[i] + b * newBackgroundAlphas[i]); 1800 cl.setBackgroundAlphaMultiplier(a * oldBackgroundAlphaMultipliers[i] + 1801 b * newBackgroundAlphaMultipliers[i]); 1802 cl.setFastAlpha(a * oldAlphas[i] + b * newAlphas[i]); 1803 } 1804 } 1805 }); 1806 1807 ValueAnimator rotationAnim = 1808 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1809 rotationAnim.setInterpolator(new DecelerateInterpolator(2.0f)); 1810 rotationAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1811 public void onAnimationUpdate(float a, float b) { 1812 // don't invalidate workspace because we did it above 1813 if (b == 0f) { 1814 // an optimization, but not required 1815 return; 1816 } 1817 for (int i = 0; i < screenCount; i++) { 1818 final CellLayout cl = (CellLayout) getChildAt(i); 1819 cl.setFastRotationY(a * oldRotationYs[i] + b * newRotationYs[i]); 1820 } 1821 } 1822 }); 1823 1824 mAnimator.playTogether(animWithInterpolator, rotationAnim); 1825 // If we call this when we're not animated, onAnimationEnd is never called on 1826 // the listener; make sure we only use the listener when we're actually animating 1827 mAnimator.addListener(mUnshrinkAnimationListener); 1828 mAnimator.start(); 1829 } else { 1830 if (enableWallpaperEffects) { 1831 setHorizontalWallpaperOffset(wallpaperOffsetForCurrentScroll()); 1832 setVerticalWallpaperOffset(0.5f); 1833 updateWallpaperOffsetImmediately(); 1834 } 1835 } 1836 } 1837 1838 hideBackgroundGradient(springLoaded ? getResources().getInteger( 1839 R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f : 0f); 1840 } 1841 1842 /** 1843 * Draw the View v into the given Canvas. 1844 * 1845 * @param v the view to draw 1846 * @param destCanvas the canvas to draw on 1847 * @param padding the horizontal and vertical padding to use when drawing 1848 */ 1849 private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { 1850 final Rect clipRect = mTempRect; 1851 v.getDrawingRect(clipRect); 1852 1853 destCanvas.save(); 1854 if (v instanceof TextView && pruneToDrawable) { 1855 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1856 clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); 1857 destCanvas.translate(padding / 2, padding / 2); 1858 d.draw(destCanvas); 1859 } else { 1860 if (v instanceof FolderIcon) { 1861 clipRect.bottom = getResources().getDimensionPixelSize(R.dimen.folder_preview_size); 1862 } else if (v instanceof BubbleTextView) { 1863 final BubbleTextView tv = (BubbleTextView) v; 1864 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1865 tv.getLayout().getLineTop(0); 1866 } else if (v instanceof TextView) { 1867 final TextView tv = (TextView) v; 1868 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1869 tv.getLayout().getLineTop(0); 1870 } 1871 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1872 destCanvas.clipRect(clipRect, Op.REPLACE); 1873 v.draw(destCanvas); 1874 } 1875 destCanvas.restore(); 1876 } 1877 1878 /** 1879 * Returns a new bitmap to show when the given View is being dragged around. 1880 * Responsibility for the bitmap is transferred to the caller. 1881 */ 1882 public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1883 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1884 Bitmap b; 1885 1886 if (v instanceof TextView) { 1887 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1888 b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, 1889 d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); 1890 } else { 1891 b = Bitmap.createBitmap( 1892 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1893 } 1894 1895 canvas.setBitmap(b); 1896 drawDragView(v, canvas, padding, true); 1897 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 1898 1899 return b; 1900 } 1901 1902 /** 1903 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1904 * Responsibility for the bitmap is transferred to the caller. 1905 */ 1906 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1907 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1908 final Bitmap b = Bitmap.createBitmap( 1909 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1910 1911 canvas.setBitmap(b); 1912 drawDragView(v, canvas, padding, false); 1913 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1914 return b; 1915 } 1916 1917 /** 1918 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1919 * Responsibility for the bitmap is transferred to the caller. 1920 */ 1921 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h) { 1922 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1923 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1924 canvas.setBitmap(b); 1925 1926 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 1927 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 1928 (h - padding) / (float) orig.getHeight()); 1929 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 1930 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 1931 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 1932 1933 // center the image 1934 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 1935 1936 Paint p = new Paint(); 1937 p.setFilterBitmap(true); 1938 canvas.drawBitmap(orig, src, dst, p); 1939 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1940 1941 return b; 1942 } 1943 1944 /** 1945 * Creates a drag outline to represent a drop (that we don't have the actual information for 1946 * yet). May be changed in the future to alter the drop outline slightly depending on the 1947 * clip description mime data. 1948 */ 1949 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 1950 Resources r = getResources(); 1951 final int outlineColor = r.getColor(R.color.drag_outline_color); 1952 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 1953 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 1954 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 1955 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 1956 final Bitmap b = Bitmap.createBitmap( 1957 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 1958 1959 canvas.setBitmap(b); 1960 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 1961 rectRadius, rectRadius, mExternalDragOutlinePaint); 1962 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1963 return b; 1964 } 1965 1966 void startDrag(CellLayout.CellInfo cellInfo) { 1967 View child = cellInfo.cell; 1968 1969 // Make sure the drag was started by a long press as opposed to a long click. 1970 if (!child.isInTouchMode()) { 1971 return; 1972 } 1973 1974 mDragInfo = cellInfo; 1975 1976 CellLayout current = getParentCellLayoutForView(cellInfo.cell); 1977 current.onDragChild(child); 1978 1979 child.clearFocus(); 1980 child.setPressed(false); 1981 1982 final Canvas canvas = new Canvas(); 1983 1984 // We need to add extra padding to the bitmap to make room for the glow effect 1985 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1986 1987 // The outline is used to visualize where the item will land if dropped 1988 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 1989 beginDragShared(child, this); 1990 } 1991 1992 public void beginDragShared(View child, DragSource source) { 1993 // We need to add extra padding to the bitmap to make room for the glow effect 1994 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1995 1996 // The drag bitmap follows the touch point around on the screen 1997 final Bitmap b = createDragBitmap(child, new Canvas(), bitmapPadding); 1998 1999 final int bmpWidth = b.getWidth(); 2000 final int bmpHeight = b.getHeight(); 2001 2002 mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 2003 final int dragLayerX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 2004 int dragLayerY = (int) mTempXY[1] + (child.getHeight() - bmpHeight) / 2; 2005 dragLayerY -= (child.getHeight() - b.getHeight()) / 2; 2006 2007 Rect dragRect = null; 2008 if (child instanceof BubbleTextView) { 2009 int iconSize = getResources().getDimensionPixelSize(R.dimen.app_icon_size); 2010 int top = child.getPaddingTop(); 2011 int left = (bmpWidth - iconSize) / 2; 2012 int right = left + iconSize; 2013 int bottom = top + iconSize; 2014 dragRect = new Rect(left, top, right, bottom); 2015 } else if (child instanceof FolderIcon) { 2016 int previewSize = getResources().getDimensionPixelSize(R.dimen.folder_preview_size); 2017 dragRect = new Rect(0, 0, child.getWidth(), previewSize); 2018 } 2019 2020 mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 2021 DragController.DRAG_ACTION_MOVE, dragRect); 2022 b.recycle(); 2023 } 2024 2025 void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, int screen, 2026 int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { 2027 View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); 2028 2029 final int[] cellXY = new int[2]; 2030 target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 2031 addInScreen(view, container, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 2032 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, cellXY[0], 2033 cellXY[1]); 2034 } 2035 2036 /** 2037 * {@inheritDoc} 2038 */ 2039 public boolean acceptDrop(DragObject d) { 2040 // If it's an external drop (e.g. from All Apps), check if it should be accepted 2041 if (d.dragSource != this) { 2042 // Don't accept the drop if we're not over a screen at time of drop 2043 if (mDragTargetLayout == null) { 2044 return false; 2045 } 2046 2047 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2048 d.dragView, mDragViewVisualCenter); 2049 2050 int spanX = 1; 2051 int spanY = 1; 2052 View ignoreView = null; 2053 if (mDragInfo != null) { 2054 final CellLayout.CellInfo dragCellInfo = mDragInfo; 2055 spanX = dragCellInfo.spanX; 2056 spanY = dragCellInfo.spanY; 2057 ignoreView = dragCellInfo.cell; 2058 } else { 2059 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 2060 spanX = dragInfo.spanX; 2061 spanY = dragInfo.spanY; 2062 } 2063 2064 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2065 (int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell); 2066 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, true)) { 2067 return true; 2068 } 2069 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, 2070 mTargetCell)) { 2071 return true; 2072 } 2073 2074 2075 // Don't accept the drop if there's no room for the item 2076 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 2077 mLauncher.showOutOfSpaceMessage(); 2078 return false; 2079 } 2080 } 2081 return true; 2082 } 2083 2084 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, 2085 boolean considerTimeout) { 2086 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2087 2088 boolean hasntMoved = false; 2089 if (mDragInfo != null) { 2090 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2091 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2092 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2093 } 2094 2095 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2096 return false; 2097 } 2098 2099 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2100 boolean willBecomeShortcut = 2101 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2102 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2103 2104 return (aboveShortcut && willBecomeShortcut); 2105 } 2106 2107 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell) { 2108 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2109 if (dropOverView instanceof FolderIcon) { 2110 FolderIcon fi = (FolderIcon) dropOverView; 2111 if (fi.acceptDrop(dragInfo)) { 2112 return true; 2113 } 2114 } 2115 return false; 2116 } 2117 2118 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2119 int[] targetCell, boolean external, DragView dragView, Runnable postAnimationRunnable) { 2120 View v = target.getChildAt(targetCell[0], targetCell[1]); 2121 boolean hasntMoved = mDragInfo != null 2122 && (mDragInfo.cellX == targetCell[0] && mDragInfo.cellY == targetCell[1]); 2123 2124 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2125 mCreateUserFolderOnDrop = false; 2126 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 2127 2128 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2129 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2130 2131 if (aboveShortcut && willBecomeShortcut) { 2132 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2133 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2134 // if the drag started here, we need to remove it from the workspace 2135 if (!external) { 2136 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2137 } 2138 2139 Rect folderLocation = new Rect(); 2140 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2141 target.removeView(v); 2142 2143 FolderIcon fi = 2144 mLauncher.addFolder(target, container, screen, targetCell[0], targetCell[1]); 2145 destInfo.cellX = -1; 2146 destInfo.cellY = -1; 2147 sourceInfo.cellX = -1; 2148 sourceInfo.cellY = -1; 2149 2150 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2151 postAnimationRunnable); 2152 return true; 2153 } 2154 return false; 2155 } 2156 2157 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2158 DragObject d, boolean external) { 2159 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2160 if (dropOverView instanceof FolderIcon) { 2161 FolderIcon fi = (FolderIcon) dropOverView; 2162 if (fi.acceptDrop(d.dragInfo)) { 2163 fi.onDrop(d); 2164 2165 // if the drag started here, we need to remove it from the workspace 2166 if (!external) { 2167 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2168 } 2169 return true; 2170 } 2171 } 2172 return false; 2173 } 2174 2175 public void onDrop(DragObject d) { 2176 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2177 mDragViewVisualCenter); 2178 2179 // We want the point to be mapped to the dragTarget. 2180 if (mDragTargetLayout != null) { 2181 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2182 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2183 } else { 2184 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2185 } 2186 } 2187 2188 // When you are in customization mode and drag to a particular screen, make that the 2189 // new current/default screen, so any subsequent taps add items to that screen 2190 if (!mLauncher.isAllAppsVisible()) { 2191 int dragTargetIndex = indexOfChild(mDragTargetLayout); 2192 if (mCurrentPage != dragTargetIndex && (isSmall() || mIsSwitchingState)) { 2193 scrollToNewPageWithoutMovingPages(dragTargetIndex); 2194 } 2195 } 2196 CellLayout dropTargetLayout = mDragTargetLayout; 2197 2198 if (d.dragSource != this) { 2199 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2200 (int) mDragViewVisualCenter[1] }; 2201 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2202 } else if (mDragInfo != null) { 2203 final View cell = mDragInfo.cell; 2204 2205 boolean continueDrop = true; 2206 if (mLauncher.isHotseatLayout(mDragTargetLayout) && d.dragInfo instanceof ItemInfo) { 2207 ItemInfo info = (ItemInfo) d.dragInfo; 2208 if (info.spanX > 1 || info.spanY > 1) { 2209 continueDrop = false; 2210 Toast.makeText(getContext(), R.string.invalid_hotseat_item, 2211 Toast.LENGTH_SHORT).show(); 2212 } 2213 } 2214 2215 if (continueDrop && dropTargetLayout != null) { 2216 // Move internally 2217 long container = mLauncher.isHotseatLayout(dropTargetLayout) ? 2218 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2219 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2220 int screen = (mTargetCell[0] < 0) ? 2221 mDragInfo.screen : indexOfChild(dropTargetLayout); 2222 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2223 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2224 // First we find the cell nearest to point at which the item is 2225 // dropped, without any consideration to whether there is an item there. 2226 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2227 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2228 // If the item being dropped is a shortcut and the nearest drop 2229 // cell also contains a shortcut, then create a folder with the two shortcuts. 2230 boolean dropInscrollArea = mCurrentPage != screen && screen > -1; 2231 2232 if (!dropInscrollArea && createUserFolderIfNecessary(cell, container, 2233 dropTargetLayout, mTargetCell, false, d.dragView, null)) { 2234 return; 2235 } 2236 2237 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, d, false)) { 2238 return; 2239 } 2240 2241 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2242 // we need to find the nearest cell location that is vacant 2243 mTargetCell = findNearestVacantArea((int) mDragViewVisualCenter[0], 2244 (int) mDragViewVisualCenter[1], mDragInfo.spanX, mDragInfo.spanY, cell, 2245 dropTargetLayout, mTargetCell); 2246 2247 if (dropInscrollArea && mState != State.SPRING_LOADED) { 2248 snapToPage(screen); 2249 } 2250 2251 2252 if (mTargetCell[0] >= 0 && mTargetCell[1] >= 0) { 2253 if (screen != mDragInfo.screen) { 2254 // Reparent the view 2255 getParentCellLayoutForView(cell).removeView(cell); 2256 addInScreen(cell, container, screen, mTargetCell[0], mTargetCell[1], 2257 mDragInfo.spanX, mDragInfo.spanY); 2258 } 2259 2260 // update the item's position after drop 2261 final ItemInfo info = (ItemInfo) cell.getTag(); 2262 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2263 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 2264 lp.cellX = mTargetCell[0]; 2265 lp.cellY = mTargetCell[1]; 2266 cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screen, 2267 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2268 2269 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2270 cell instanceof LauncherAppWidgetHostView) { 2271 final CellLayout cellLayout = dropTargetLayout; 2272 // We post this call so that the widget has a chance to be placed 2273 // in its final location 2274 2275 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2276 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2277 if (pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2278 final Runnable resizeRunnable = new Runnable() { 2279 public void run() { 2280 DragLayer dragLayer = mLauncher.getDragLayer(); 2281 dragLayer.addResizeFrame(info, hostView, cellLayout); 2282 } 2283 }; 2284 post(new Runnable() { 2285 public void run() { 2286 if (!isPageMoving()) { 2287 resizeRunnable.run(); 2288 } else { 2289 mDelayedResizeRunnable = resizeRunnable; 2290 } 2291 } 2292 }); 2293 } 2294 } 2295 2296 LauncherModel.moveItemInDatabase(mLauncher, info, container, screen, lp.cellX, 2297 lp.cellY); 2298 } 2299 } 2300 2301 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2302 2303 // Prepare it to be animated into its new position 2304 // This must be called after the view has been re-parented 2305 final Runnable disableHardwareLayersRunnable = new Runnable() { 2306 @Override 2307 public void run() { 2308 mAnimatingViewIntoPlace = false; 2309 updateChildrenLayersEnabled(); 2310 } 2311 }; 2312 mAnimatingViewIntoPlace = true; 2313 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, 2314 disableHardwareLayersRunnable); 2315 parent.onDropChild(cell); 2316 } 2317 } 2318 2319 public void getViewLocationRelativeToSelf(View v, int[] location) { 2320 getLocationInWindow(location); 2321 int x = location[0]; 2322 int y = location[1]; 2323 2324 v.getLocationInWindow(location); 2325 int vX = location[0]; 2326 int vY = location[1]; 2327 2328 location[0] = vX - x; 2329 location[1] = vY - y; 2330 } 2331 2332 public void onDragEnter(DragObject d) { 2333 if (mDragTargetLayout != null) { 2334 mDragTargetLayout.setIsDragOverlapping(false); 2335 mDragTargetLayout.onDragExit(); 2336 } 2337 mDragTargetLayout = getCurrentDropLayout(); 2338 mDragTargetLayout.setIsDragOverlapping(true); 2339 mDragTargetLayout.onDragEnter(); 2340 2341 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2342 // don't need to show the outlines 2343 if (LauncherApplication.isScreenLarge()) { 2344 showOutlines(); 2345 } 2346 } 2347 2348 private void doDragExit(DragObject d) { 2349 // Clean up folders 2350 cleanupFolderCreation(d); 2351 2352 // Reset the scroll area and previous drag target 2353 onResetScrollArea(); 2354 2355 if (mDragTargetLayout != null) { 2356 mDragTargetLayout.setIsDragOverlapping(false); 2357 mDragTargetLayout.onDragExit(); 2358 } 2359 mLastDragOverView = null; 2360 2361 if (!mIsPageMoving) { 2362 hideOutlines(); 2363 } 2364 } 2365 2366 public void onDragExit(DragObject d) { 2367 doDragExit(d); 2368 } 2369 2370 public DropTarget getDropTargetDelegate(DragObject d) { 2371 return null; 2372 } 2373 2374 /** 2375 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 2376 * in the returned structure related to the widgets that match the drop (or a null list if it is 2377 * a shortcut drop). If the drop is not accepted then a null structure is returned. 2378 */ 2379 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 2380 final LauncherModel model = mLauncher.getModel(); 2381 final ClipDescription desc = event.getClipDescription(); 2382 final int mimeTypeCount = desc.getMimeTypeCount(); 2383 for (int i = 0; i < mimeTypeCount; ++i) { 2384 final String mimeType = desc.getMimeType(i); 2385 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 2386 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 2387 } else { 2388 final List<WidgetMimeTypeHandlerData> widgets = 2389 model.resolveWidgetsForMimeType(mContext, mimeType); 2390 if (widgets.size() > 0) { 2391 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 2392 } 2393 } 2394 } 2395 return null; 2396 } 2397 2398 /** 2399 * Global drag and drop handler 2400 */ 2401 @Override 2402 public boolean onDragEvent(DragEvent event) { 2403 final ClipDescription desc = event.getClipDescription(); 2404 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 2405 final int[] pos = new int[2]; 2406 layout.getLocationOnScreen(pos); 2407 // We need to offset the drag coordinates to layout coordinate space 2408 final int x = (int) event.getX() - pos[0]; 2409 final int y = (int) event.getY() - pos[1]; 2410 2411 switch (event.getAction()) { 2412 case DragEvent.ACTION_DRAG_STARTED: { 2413 // Validate this drag 2414 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2415 if (test != null) { 2416 boolean isShortcut = (test.second == null); 2417 if (isShortcut) { 2418 // Check if we have enough space on this screen to add a new shortcut 2419 if (!layout.findCellForSpan(pos, 1, 1)) { 2420 mLauncher.showOutOfSpaceMessage(); 2421 return false; 2422 } 2423 } 2424 } else { 2425 // Show error message if we couldn't accept any of the items 2426 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 2427 Toast.LENGTH_SHORT).show(); 2428 return false; 2429 } 2430 2431 // Create the drag outline 2432 // We need to add extra padding to the bitmap to make room for the glow effect 2433 final Canvas canvas = new Canvas(); 2434 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2435 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 2436 2437 // Show the current page outlines to indicate that we can accept this drop 2438 showOutlines(); 2439 layout.setIsDragOccuring(true); 2440 layout.onDragEnter(); 2441 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2442 2443 return true; 2444 } 2445 case DragEvent.ACTION_DRAG_LOCATION: 2446 // Visualize the drop location 2447 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2448 return true; 2449 case DragEvent.ACTION_DROP: { 2450 // Try and add any shortcuts 2451 final LauncherModel model = mLauncher.getModel(); 2452 final ClipData data = event.getClipData(); 2453 2454 // We assume that the mime types are ordered in descending importance of 2455 // representation. So we enumerate the list of mime types and alert the 2456 // user if any widgets can handle the drop. Only the most preferred 2457 // representation will be handled. 2458 pos[0] = x; 2459 pos[1] = y; 2460 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2461 if (test != null) { 2462 final int index = test.first; 2463 final List<WidgetMimeTypeHandlerData> widgets = test.second; 2464 final boolean isShortcut = (widgets == null); 2465 final String mimeType = desc.getMimeType(index); 2466 if (isShortcut) { 2467 final Intent intent = data.getItemAt(index).getIntent(); 2468 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 2469 onDropExternal(new int[] { x, y }, info, layout, false); 2470 } else { 2471 if (widgets.size() == 1) { 2472 // If there is only one item, then go ahead and add and configure 2473 // that widget 2474 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 2475 final PendingAddWidgetInfo createInfo = 2476 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 2477 mLauncher.addAppWidgetFromDrop(createInfo, 2478 LauncherSettings.Favorites.CONTAINER_DESKTOP, mCurrentPage, null, pos); 2479 } else { 2480 // Show the widget picker dialog if there is more than one widget 2481 // that can handle this data type 2482 final InstallWidgetReceiver.WidgetListAdapter adapter = 2483 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 2484 data, widgets, layout, mCurrentPage, pos); 2485 final AlertDialog.Builder builder = 2486 new AlertDialog.Builder(mContext); 2487 builder.setAdapter(adapter, adapter); 2488 builder.setCancelable(true); 2489 builder.setTitle(mContext.getString( 2490 R.string.external_drop_widget_pick_title)); 2491 builder.setIcon(R.drawable.ic_no_applications); 2492 builder.show(); 2493 } 2494 } 2495 } 2496 return true; 2497 } 2498 case DragEvent.ACTION_DRAG_ENDED: 2499 // Hide the page outlines after the drop 2500 layout.setIsDragOccuring(false); 2501 layout.onDragExit(); 2502 hideOutlines(); 2503 return true; 2504 } 2505 return super.onDragEvent(event); 2506 } 2507 2508 /* 2509 * 2510 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2511 * coordinate space. The argument xy is modified with the return result. 2512 * 2513 */ 2514 void mapPointFromSelfToChild(View v, float[] xy) { 2515 mapPointFromSelfToChild(v, xy, null); 2516 } 2517 2518 /* 2519 * 2520 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2521 * coordinate space. The argument xy is modified with the return result. 2522 * 2523 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2524 * computing it itself; we use this to avoid redundant matrix inversions in 2525 * findMatchingPageForDragOver 2526 * 2527 */ 2528 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2529 if (cachedInverseMatrix == null) { 2530 v.getMatrix().invert(mTempInverseMatrix); 2531 cachedInverseMatrix = mTempInverseMatrix; 2532 } 2533 xy[0] = xy[0] + mScrollX - v.getLeft(); 2534 xy[1] = xy[1] + mScrollY - v.getTop(); 2535 cachedInverseMatrix.mapPoints(xy); 2536 } 2537 2538 /* 2539 * Maps a point from the Workspace's coordinate system to another sibling view's. (Workspace 2540 * covers the full screen) 2541 */ 2542 void mapPointFromSelfToSibling(View v, float[] xy) { 2543 xy[0] = xy[0] - v.getLeft(); 2544 xy[1] = xy[1] - v.getTop(); 2545 } 2546 2547 /* 2548 * 2549 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2550 * the parent View's coordinate space. The argument xy is modified with the return result. 2551 * 2552 */ 2553 void mapPointFromChildToSelf(View v, float[] xy) { 2554 v.getMatrix().mapPoints(xy); 2555 xy[0] -= (mScrollX - v.getLeft()); 2556 xy[1] -= (mScrollY - v.getTop()); 2557 } 2558 2559 static private float squaredDistance(float[] point1, float[] point2) { 2560 float distanceX = point1[0] - point2[0]; 2561 float distanceY = point2[1] - point2[1]; 2562 return distanceX * distanceX + distanceY * distanceY; 2563 } 2564 2565 /* 2566 * 2567 * Returns true if the passed CellLayout cl overlaps with dragView 2568 * 2569 */ 2570 boolean overlaps(CellLayout cl, DragView dragView, 2571 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2572 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2573 final float[] draggedItemTopLeft = mTempDragCoordinates; 2574 draggedItemTopLeft[0] = dragViewX; 2575 draggedItemTopLeft[1] = dragViewY; 2576 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2577 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2578 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2579 2580 // Transform the dragged item's top left coordinates 2581 // to the CellLayout's local coordinates 2582 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2583 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2584 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2585 2586 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2587 // Transform the dragged item's bottom right coordinates 2588 // to the CellLayout's local coordinates 2589 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2590 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2591 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2592 2593 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2594 float overlap = (overlapRegionRight - overlapRegionLeft) * 2595 (overlapRegionBottom - overlapRegionTop); 2596 if (overlap > 0) { 2597 return true; 2598 } 2599 } 2600 } 2601 return false; 2602 } 2603 2604 /* 2605 * 2606 * This method returns the CellLayout that is currently being dragged to. In order to drag 2607 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2608 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2609 * 2610 * Return null if no CellLayout is currently being dragged over 2611 * 2612 */ 2613 private CellLayout findMatchingPageForDragOver( 2614 DragView dragView, float originX, float originY, boolean exact) { 2615 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2616 // with the item being dragged and then choose the one that's closest to the touch point 2617 final int screenCount = getChildCount(); 2618 CellLayout bestMatchingScreen = null; 2619 float smallestDistSoFar = Float.MAX_VALUE; 2620 2621 for (int i = 0; i < screenCount; i++) { 2622 CellLayout cl = (CellLayout) getChildAt(i); 2623 2624 final float[] touchXy = {originX, originY}; 2625 // Transform the touch coordinates to the CellLayout's local coordinates 2626 // If the touch point is within the bounds of the cell layout, we can return immediately 2627 cl.getMatrix().invert(mTempInverseMatrix); 2628 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2629 2630 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2631 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2632 return cl; 2633 } 2634 2635 if (!exact && overlaps(cl, dragView, (int) originX, (int) originY, mTempInverseMatrix)) { 2636 // Get the center of the cell layout in screen coordinates 2637 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2638 cellLayoutCenter[0] = cl.getWidth()/2; 2639 cellLayoutCenter[1] = cl.getHeight()/2; 2640 mapPointFromChildToSelf(cl, cellLayoutCenter); 2641 2642 touchXy[0] = originX; 2643 touchXy[1] = originY; 2644 2645 // Calculate the distance between the center of the CellLayout 2646 // and the touch point 2647 float dist = squaredDistance(touchXy, cellLayoutCenter); 2648 2649 if (dist < smallestDistSoFar) { 2650 smallestDistSoFar = dist; 2651 bestMatchingScreen = cl; 2652 } 2653 } 2654 } 2655 return bestMatchingScreen; 2656 } 2657 2658 // This is used to compute the visual center of the dragView. This point is then 2659 // used to visualize drop locations and determine where to drop an item. The idea is that 2660 // the visual center represents the user's interpretation of where the item is, and hence 2661 // is the appropriate point to use when determining drop location. 2662 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2663 DragView dragView, float[] recycle) { 2664 float res[]; 2665 if (recycle == null) { 2666 res = new float[2]; 2667 } else { 2668 res = recycle; 2669 } 2670 2671 // First off, the drag view has been shifted in a way that is not represented in the 2672 // x and y values or the x/yOffsets. Here we account for that shift. 2673 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2674 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2675 2676 // These represent the visual top and left of drag view if a dragRect was provided. 2677 // If a dragRect was not provided, then they correspond to the actual view left and 2678 // top, as the dragRect is in that case taken to be the entire dragView. 2679 // R.dimen.dragViewOffsetY. 2680 int left = x - xOffset; 2681 int top = y - yOffset; 2682 2683 // In order to find the visual center, we shift by half the dragRect 2684 res[0] = left + dragView.getDragRegion().width() / 2; 2685 res[1] = top + dragView.getDragRegion().height() / 2; 2686 2687 return res; 2688 } 2689 2690 public void onDragOver(DragObject d) { 2691 // Skip drag over events while we are dragging over side pages 2692 if (mInScrollArea) return; 2693 if (mIsSwitchingState) return; 2694 2695 CellLayout layout = null; 2696 ItemInfo item = (ItemInfo) d.dragInfo; 2697 2698 // Ensure that we have proper spans for the item that we are dropping 2699 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2700 2701 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2702 d.dragView, mDragViewVisualCenter); 2703 2704 // Identify whether we have dragged over a side page 2705 if (isSmall()) { 2706 int left = d.x - d.xOffset; 2707 int top = d.y - d.yOffset; 2708 layout = findMatchingPageForDragOver(d.dragView, mDragViewVisualCenter[0], 2709 mDragViewVisualCenter[1], true); 2710 if (layout != mDragTargetLayout) { 2711 // Cancel all intermediate folder states 2712 cleanupFolderCreation(d); 2713 2714 if (mDragTargetLayout != null) { 2715 mDragTargetLayout.setIsDragOverlapping(false); 2716 mDragTargetLayout.onDragExit(); 2717 } 2718 mDragTargetLayout = layout; 2719 if (mDragTargetLayout != null) { 2720 mDragTargetLayout.setIsDragOverlapping(true); 2721 mDragTargetLayout.onDragEnter(); 2722 } else { 2723 mLastDragOverView = null; 2724 } 2725 2726 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 2727 if (isInSpringLoadedMode) { 2728 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2729 } 2730 } 2731 } else { 2732 // Test to see if we are over the hotseat otherwise just use the current page 2733 Rect r = new Rect(); 2734 if (mLauncher.getHotseat() != null) { 2735 mLauncher.getHotseat().getHitRect(r); 2736 if (r.contains(d.x, d.y)) { 2737 layout = mLauncher.getHotseat().getLayout(); 2738 } 2739 } 2740 if (layout == null) { 2741 layout = getCurrentDropLayout(); 2742 } 2743 if (layout != mDragTargetLayout) { 2744 if (mDragTargetLayout != null) { 2745 mDragTargetLayout.setIsDragOverlapping(false); 2746 mDragTargetLayout.onDragExit(); 2747 } 2748 mDragTargetLayout = layout; 2749 mDragTargetLayout.setIsDragOverlapping(true); 2750 mDragTargetLayout.onDragEnter(); 2751 } 2752 } 2753 2754 // Handle the drag over 2755 if (mDragTargetLayout != null) { 2756 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2757 2758 // We want the point to be mapped to the dragTarget. 2759 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2760 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2761 } else { 2762 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2763 } 2764 ItemInfo info = (ItemInfo) d.dragInfo; 2765 2766 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2767 (int) mDragViewVisualCenter[1], 1, 1, mDragTargetLayout, mTargetCell); 2768 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2769 mTargetCell[1]); 2770 2771 boolean userFolderPending = willCreateUserFolder(info, mDragTargetLayout, 2772 mTargetCell, false); 2773 boolean isOverFolder = dragOverView instanceof FolderIcon; 2774 if (dragOverView != mLastDragOverView) { 2775 cancelFolderCreation(); 2776 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2777 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2778 } 2779 } 2780 2781 if (userFolderPending && dragOverView != mLastDragOverView) { 2782 mFolderCreationAlarm.setOnAlarmListener(new 2783 FolderCreationAlarmListener(mDragTargetLayout, mTargetCell[0], mTargetCell[1])); 2784 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2785 } 2786 2787 if (dragOverView != mLastDragOverView && isOverFolder) { 2788 ((FolderIcon) dragOverView).onDragEnter(d.dragInfo); 2789 if (mDragTargetLayout != null) { 2790 mDragTargetLayout.clearDragOutlines(); 2791 } 2792 } 2793 mLastDragOverView = dragOverView; 2794 2795 if (!mCreateUserFolderOnDrop && !isOverFolder) { 2796 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2797 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2798 item.spanX, item.spanY); 2799 } 2800 } 2801 } 2802 2803 private void cleanupFolderCreation(DragObject d) { 2804 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2805 mDragFolderRingAnimator.animateToNaturalState(); 2806 } 2807 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2808 if (d != null) { 2809 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2810 } 2811 } 2812 mFolderCreationAlarm.cancelAlarm(); 2813 } 2814 2815 private void cancelFolderCreation() { 2816 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2817 mDragFolderRingAnimator.animateToNaturalState(); 2818 } 2819 mCreateUserFolderOnDrop = false; 2820 mFolderCreationAlarm.cancelAlarm(); 2821 } 2822 2823 class FolderCreationAlarmListener implements OnAlarmListener { 2824 CellLayout layout; 2825 int cellX; 2826 int cellY; 2827 2828 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 2829 this.layout = layout; 2830 this.cellX = cellX; 2831 this.cellY = cellY; 2832 } 2833 2834 public void onAlarm(Alarm alarm) { 2835 if (mDragFolderRingAnimator == null) { 2836 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 2837 } 2838 mDragFolderRingAnimator.setCell(cellX, cellY); 2839 mDragFolderRingAnimator.setCellLayout(layout); 2840 mDragFolderRingAnimator.animateToAcceptState(); 2841 layout.showFolderAccept(mDragFolderRingAnimator); 2842 layout.clearDragOutlines(); 2843 mCreateUserFolderOnDrop = true; 2844 } 2845 } 2846 2847 @Override 2848 public void getHitRect(Rect outRect) { 2849 // We want the workspace to have the whole area of the display (it will find the correct 2850 // cell layout to drop to in the existing drag/drop logic. 2851 final Display d = mLauncher.getWindowManager().getDefaultDisplay(); 2852 outRect.set(0, 0, d.getWidth(), d.getHeight()); 2853 } 2854 2855 /** 2856 * Add the item specified by dragInfo to the given layout. 2857 * @return true if successful 2858 */ 2859 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2860 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2861 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2862 return true; 2863 } 2864 mLauncher.showOutOfSpaceMessage(); 2865 return false; 2866 } 2867 2868 private void onDropExternal(int[] touchXY, Object dragInfo, 2869 CellLayout cellLayout, boolean insertAtFirst) { 2870 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 2871 } 2872 2873 /** 2874 * Drop an item that didn't originate on one of the workspace screens. 2875 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2876 * come from another app altogether. 2877 * 2878 * NOTE: This can also be called when we are outside of a drag event, when we want 2879 * to add an item to one of the workspace screens. 2880 */ 2881 private void onDropExternal(final int[] touchXY, final Object dragInfo, 2882 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 2883 final Runnable exitSpringLoadedRunnable = new Runnable() { 2884 @Override 2885 public void run() { 2886 mLauncher.exitSpringLoadedDragModeDelayed(false); 2887 } 2888 }; 2889 2890 ItemInfo info = (ItemInfo) dragInfo; 2891 int spanX = info.spanX; 2892 int spanY = info.spanY; 2893 if (mDragInfo != null) { 2894 spanX = mDragInfo.spanX; 2895 spanY = mDragInfo.spanY; 2896 } 2897 2898 final long container = mLauncher.isHotseatLayout(cellLayout) ? 2899 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2900 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2901 final int screen = indexOfChild(cellLayout); 2902 if (!mLauncher.isHotseatLayout(cellLayout) && screen != mCurrentPage 2903 && mState != State.SPRING_LOADED) { 2904 snapToPage(screen); 2905 } 2906 2907 if (info instanceof PendingAddItemInfo) { 2908 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 2909 2910 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], spanX, spanY, null, 2911 cellLayout, mTargetCell); 2912 Runnable onAnimationCompleteRunnable = new Runnable() { 2913 @Override 2914 public void run() { 2915 // When dragging and dropping from customization tray, we deal with creating 2916 // widgets/shortcuts/folders in a slightly different way 2917 switch (pendingInfo.itemType) { 2918 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 2919 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, 2920 container, screen, mTargetCell, null); 2921 break; 2922 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2923 mLauncher.processShortcutFromDrop(pendingInfo.componentName, 2924 container, screen, mTargetCell, null); 2925 break; 2926 default: 2927 throw new IllegalStateException("Unknown item type: " + 2928 pendingInfo.itemType); 2929 } 2930 cellLayout.onDragExit(); 2931 } 2932 }; 2933 2934 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 2935 // location and size on the home screen. 2936 int loc[] = new int[2]; 2937 cellLayout.cellToPoint(mTargetCell[0], mTargetCell[1], loc); 2938 2939 RectF r = new RectF(); 2940 cellLayout.cellToRect(mTargetCell[0], mTargetCell[1], spanX, spanY, r); 2941 float cellLayoutScale = 2942 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(cellLayout, loc); 2943 2944 float dragViewScale = r.width() / d.dragView.getMeasuredWidth(); 2945 // The animation will scale the dragView about its center, so we need to center about 2946 // the final location. 2947 loc[0] -= (d.dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 2948 loc[1] -= (d.dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 2949 2950 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, loc, 2951 dragViewScale * cellLayoutScale, onAnimationCompleteRunnable); 2952 } else { 2953 // This is for other drag/drop cases, like dragging from All Apps 2954 View view = null; 2955 2956 switch (info.itemType) { 2957 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 2958 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2959 if (info.container == NO_ID && info instanceof ApplicationInfo) { 2960 // Came from all apps -- make a copy 2961 info = new ShortcutInfo((ApplicationInfo) info); 2962 } 2963 view = mLauncher.createShortcut(R.layout.application, cellLayout, 2964 (ShortcutInfo) info); 2965 break; 2966 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 2967 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 2968 (FolderInfo) info, mIconCache); 2969 break; 2970 default: 2971 throw new IllegalStateException("Unknown item type: " + info.itemType); 2972 } 2973 2974 // First we find the cell nearest to point at which the item is 2975 // dropped, without any consideration to whether there is an item there. 2976 if (touchXY != null) { 2977 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 2978 cellLayout, mTargetCell); 2979 d.postAnimationRunnable = exitSpringLoadedRunnable; 2980 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, true, 2981 d.dragView, d.postAnimationRunnable)) { 2982 return; 2983 } 2984 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, d, true)) { 2985 return; 2986 } 2987 } 2988 2989 if (touchXY != null) { 2990 // when dragging and dropping, just find the closest free spot 2991 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], 1, 1, null, 2992 cellLayout, mTargetCell); 2993 } else { 2994 cellLayout.findCellForSpan(mTargetCell, 1, 1); 2995 } 2996 addInScreen(view, container, screen, mTargetCell[0], mTargetCell[1], info.spanX, 2997 info.spanY, insertAtFirst); 2998 cellLayout.onDropChild(view); 2999 cellLayout.animateDrop(); 3000 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 3001 cellLayout.getChildrenLayout().measureChild(view); 3002 3003 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, 3004 lp.cellX, lp.cellY); 3005 3006 if (d.dragView != null) { 3007 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 3008 exitSpringLoadedRunnable); 3009 } 3010 } 3011 } 3012 3013 /** 3014 * Return the current {@link CellLayout}, correctly picking the destination 3015 * screen while a scroll is in progress. 3016 */ 3017 public CellLayout getCurrentDropLayout() { 3018 return (CellLayout) getChildAt(mNextPage == INVALID_PAGE ? mCurrentPage : mNextPage); 3019 } 3020 3021 /** 3022 * Return the current CellInfo describing our current drag; this method exists 3023 * so that Launcher can sync this object with the correct info when the activity is created/ 3024 * destroyed 3025 * 3026 */ 3027 public CellLayout.CellInfo getDragInfo() { 3028 return mDragInfo; 3029 } 3030 3031 /** 3032 * Calculate the nearest cell where the given object would be dropped. 3033 * 3034 * pixelX and pixelY should be in the coordinate system of layout 3035 */ 3036 private int[] findNearestVacantArea(int pixelX, int pixelY, 3037 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 3038 return layout.findNearestVacantArea( 3039 pixelX, pixelY, spanX, spanY, ignoreView, recycle); 3040 } 3041 3042 /** 3043 * Calculate the nearest cell where the given object would be dropped. 3044 * 3045 * pixelX and pixelY should be in the coordinate system of layout 3046 */ 3047 private int[] findNearestArea(int pixelX, int pixelY, 3048 int spanX, int spanY, CellLayout layout, int[] recycle) { 3049 return layout.findNearestArea( 3050 pixelX, pixelY, spanX, spanY, recycle); 3051 } 3052 3053 void setup(Launcher launcher, DragController dragController) { 3054 mLauncher = launcher; 3055 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3056 mDragController = dragController; 3057 3058 3059 // hardware layers on children are enabled on startup, but should be disabled until 3060 // needed 3061 updateChildrenLayersEnabled(); 3062 setWallpaperDimension(); 3063 } 3064 3065 /** 3066 * Called at the end of a drag which originated on the workspace. 3067 */ 3068 public void onDropCompleted(View target, DragObject d, boolean success) { 3069 if (success) { 3070 if (target != this) { 3071 if (mDragInfo != null) { 3072 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 3073 if (mDragInfo.cell instanceof DropTarget) { 3074 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 3075 } 3076 } 3077 } 3078 } else if (mDragInfo != null) { 3079 // NOTE: When 'success' is true, onDragExit is called by the DragController before 3080 // calling onDropCompleted(). We call it ourselves here, but maybe this should be 3081 // moved into DragController.cancelDrag(). 3082 doDragExit(null); 3083 CellLayout cellLayout; 3084 if (mLauncher.isHotseatLayout(target)) { 3085 cellLayout = mLauncher.getHotseat().getLayout(); 3086 } else { 3087 cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3088 } 3089 cellLayout.onDropChild(mDragInfo.cell); 3090 } 3091 mDragOutline = null; 3092 mDragInfo = null; 3093 } 3094 3095 @Override 3096 public void onDragViewVisible() { 3097 ((View) mDragInfo.cell).setVisibility(View.GONE); 3098 } 3099 3100 public boolean isDropEnabled() { 3101 return true; 3102 } 3103 3104 @Override 3105 protected void onRestoreInstanceState(Parcelable state) { 3106 super.onRestoreInstanceState(state); 3107 Launcher.setScreen(mCurrentPage); 3108 } 3109 3110 @Override 3111 public void scrollLeft() { 3112 if (!isSmall() && !mIsSwitchingState) { 3113 super.scrollLeft(); 3114 } 3115 Folder openFolder = getOpenFolder(); 3116 if (openFolder != null) { 3117 openFolder.completeDragExit(); 3118 } 3119 } 3120 3121 @Override 3122 public void scrollRight() { 3123 if (!isSmall() && !mIsSwitchingState) { 3124 super.scrollRight(); 3125 } 3126 Folder openFolder = getOpenFolder(); 3127 if (openFolder != null) { 3128 openFolder.completeDragExit(); 3129 } 3130 } 3131 3132 @Override 3133 public void onEnterScrollArea(int direction) { 3134 if (!isSmall() && !mIsSwitchingState) { 3135 mInScrollArea = true; 3136 3137 final int page = mCurrentPage + (direction == DragController.SCROLL_LEFT ? -1 : 1); 3138 final CellLayout layout = (CellLayout) getChildAt(page); 3139 cancelFolderCreation(); 3140 3141 if (layout != null) { 3142 // Exit the current layout and mark the overlapping layout 3143 if (mDragTargetLayout != null) { 3144 mDragTargetLayout.setIsDragOverlapping(false); 3145 mDragTargetLayout.onDragExit(); 3146 } 3147 mDragTargetLayout = layout; 3148 mDragTargetLayout.setIsDragOverlapping(true); 3149 3150 // Workspace is responsible for drawing the edge glow on adjacent pages, 3151 // so we need to redraw the workspace when this may have changed. 3152 invalidate(); 3153 } 3154 } 3155 } 3156 3157 @Override 3158 public void onExitScrollArea() { 3159 if (mInScrollArea) { 3160 if (mDragTargetLayout != null) { 3161 // Unmark the overlapping layout and re-enter the current layout 3162 mDragTargetLayout.setIsDragOverlapping(false); 3163 mDragTargetLayout = getCurrentDropLayout(); 3164 mDragTargetLayout.onDragEnter(); 3165 3166 // Workspace is responsible for drawing the edge glow on adjacent pages, 3167 // so we need to redraw the workspace when this may have changed. 3168 invalidate(); 3169 } 3170 mInScrollArea = false; 3171 } 3172 } 3173 3174 private void onResetScrollArea() { 3175 if (mDragTargetLayout != null) { 3176 // Unmark the overlapping layout 3177 mDragTargetLayout.setIsDragOverlapping(false); 3178 3179 // Workspace is responsible for drawing the edge glow on adjacent pages, 3180 // so we need to redraw the workspace when this may have changed. 3181 invalidate(); 3182 } 3183 mInScrollArea = false; 3184 } 3185 3186 /** 3187 * Returns a specific CellLayout 3188 */ 3189 CellLayout getParentCellLayoutForView(View v) { 3190 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3191 for (CellLayout layout : layouts) { 3192 if (layout.getChildrenLayout().indexOfChild(v) > -1) { 3193 return layout; 3194 } 3195 } 3196 return null; 3197 } 3198 3199 /** 3200 * Returns a list of all the CellLayouts in the workspace. 3201 */ 3202 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3203 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3204 int screenCount = getChildCount(); 3205 for (int screen = 0; screen < screenCount; screen++) { 3206 layouts.add(((CellLayout) getChildAt(screen))); 3207 } 3208 if (mLauncher.getHotseat() != null) { 3209 layouts.add(mLauncher.getHotseat().getLayout()); 3210 } 3211 return layouts; 3212 } 3213 3214 /** 3215 * We should only use this to search for specific children. Do not use this method to modify 3216 * CellLayoutChildren directly. 3217 */ 3218 ArrayList<CellLayoutChildren> getWorkspaceAndHotseatCellLayoutChildren() { 3219 ArrayList<CellLayoutChildren> childrenLayouts = new ArrayList<CellLayoutChildren>(); 3220 int screenCount = getChildCount(); 3221 for (int screen = 0; screen < screenCount; screen++) { 3222 childrenLayouts.add(((CellLayout) getChildAt(screen)).getChildrenLayout()); 3223 } 3224 if (mLauncher.getHotseat() != null) { 3225 childrenLayouts.add(mLauncher.getHotseat().getLayout().getChildrenLayout()); 3226 } 3227 return childrenLayouts; 3228 } 3229 3230 public Folder getFolderForTag(Object tag) { 3231 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3232 for (CellLayoutChildren layout: childrenLayouts) { 3233 int count = layout.getChildCount(); 3234 for (int i = 0; i < count; i++) { 3235 View child = layout.getChildAt(i); 3236 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 3237 if (child instanceof Folder) { 3238 Folder f = (Folder) child; 3239 if (f.getInfo() == tag && f.getInfo().opened) { 3240 return f; 3241 } 3242 } 3243 } 3244 } 3245 return null; 3246 } 3247 3248 public View getViewForTag(Object tag) { 3249 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3250 for (CellLayoutChildren layout: childrenLayouts) { 3251 int count = layout.getChildCount(); 3252 for (int i = 0; i < count; i++) { 3253 View child = layout.getChildAt(i); 3254 if (child.getTag() == tag) { 3255 return child; 3256 } 3257 } 3258 } 3259 return null; 3260 } 3261 3262 void clearDropTargets() { 3263 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3264 for (CellLayoutChildren layout: childrenLayouts) { 3265 int childCount = layout.getChildCount(); 3266 for (int j = 0; j < childCount; j++) { 3267 View v = layout.getChildAt(j); 3268 if (v instanceof DropTarget) { 3269 mDragController.removeDropTarget((DropTarget) v); 3270 } 3271 } 3272 } 3273 } 3274 3275 void removeItems(final ArrayList<ApplicationInfo> apps) { 3276 final int screenCount = getChildCount(); 3277 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3278 3279 final HashSet<String> packageNames = new HashSet<String>(); 3280 final int appCount = apps.size(); 3281 for (int i = 0; i < appCount; i++) { 3282 packageNames.add(apps.get(i).componentName.getPackageName()); 3283 } 3284 3285 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3286 for (final CellLayout layoutParent: cellLayouts) { 3287 final ViewGroup layout = layoutParent.getChildrenLayout(); 3288 3289 // Avoid ANRs by treating each screen separately 3290 post(new Runnable() { 3291 public void run() { 3292 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3293 childrenToRemove.clear(); 3294 3295 int childCount = layout.getChildCount(); 3296 for (int j = 0; j < childCount; j++) { 3297 final View view = layout.getChildAt(j); 3298 Object tag = view.getTag(); 3299 3300 if (tag instanceof ShortcutInfo) { 3301 final ShortcutInfo info = (ShortcutInfo) tag; 3302 final Intent intent = info.intent; 3303 final ComponentName name = intent.getComponent(); 3304 3305 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3306 for (String packageName: packageNames) { 3307 if (packageName.equals(name.getPackageName())) { 3308 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3309 childrenToRemove.add(view); 3310 } 3311 } 3312 } 3313 } else if (tag instanceof FolderInfo) { 3314 final FolderInfo info = (FolderInfo) tag; 3315 final ArrayList<ShortcutInfo> contents = info.contents; 3316 final int contentsCount = contents.size(); 3317 final ArrayList<ShortcutInfo> appsToRemoveFromFolder = 3318 new ArrayList<ShortcutInfo>(); 3319 3320 for (int k = 0; k < contentsCount; k++) { 3321 final ShortcutInfo appInfo = contents.get(k); 3322 final Intent intent = appInfo.intent; 3323 final ComponentName name = intent.getComponent(); 3324 3325 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3326 for (String packageName: packageNames) { 3327 if (packageName.equals(name.getPackageName())) { 3328 appsToRemoveFromFolder.add(appInfo); 3329 } 3330 } 3331 } 3332 } 3333 for (ShortcutInfo item: appsToRemoveFromFolder) { 3334 info.remove(item); 3335 LauncherModel.deleteItemFromDatabase(mLauncher, item); 3336 } 3337 } else if (tag instanceof LauncherAppWidgetInfo) { 3338 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3339 final AppWidgetProviderInfo provider = 3340 widgets.getAppWidgetInfo(info.appWidgetId); 3341 if (provider != null) { 3342 for (String packageName: packageNames) { 3343 if (packageName.equals(provider.provider.getPackageName())) { 3344 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3345 childrenToRemove.add(view); 3346 } 3347 } 3348 } 3349 } 3350 } 3351 3352 childCount = childrenToRemove.size(); 3353 for (int j = 0; j < childCount; j++) { 3354 View child = childrenToRemove.get(j); 3355 // Note: We can not remove the view directly from CellLayoutChildren as this 3356 // does not re-mark the spaces as unoccupied. 3357 layoutParent.removeViewInLayout(child); 3358 if (child instanceof DropTarget) { 3359 mDragController.removeDropTarget((DropTarget)child); 3360 } 3361 } 3362 3363 if (childCount > 0) { 3364 layout.requestLayout(); 3365 layout.invalidate(); 3366 } 3367 } 3368 }); 3369 } 3370 } 3371 3372 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3373 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3374 for (CellLayoutChildren layout: childrenLayouts) { 3375 int childCount = layout.getChildCount(); 3376 for (int j = 0; j < childCount; j++) { 3377 final View view = layout.getChildAt(j); 3378 Object tag = view.getTag(); 3379 if (tag instanceof ShortcutInfo) { 3380 ShortcutInfo info = (ShortcutInfo)tag; 3381 // We need to check for ACTION_MAIN otherwise getComponent() might 3382 // return null for some shortcuts (for instance, for shortcuts to 3383 // web pages.) 3384 final Intent intent = info.intent; 3385 final ComponentName name = intent.getComponent(); 3386 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3387 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3388 final int appCount = apps.size(); 3389 for (int k = 0; k < appCount; k++) { 3390 ApplicationInfo app = apps.get(k); 3391 if (app.componentName.equals(name)) { 3392 info.setIcon(mIconCache.getIcon(info.intent)); 3393 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 3394 new FastBitmapDrawable(info.getIcon(mIconCache)), 3395 null, null); 3396 } 3397 } 3398 } 3399 } 3400 } 3401 } 3402 } 3403 3404 void moveToDefaultScreen(boolean animate) { 3405 if (isSmall() || mIsSwitchingState) { 3406 mLauncher.showWorkspace(animate, (CellLayout) getChildAt(mDefaultPage)); 3407 } else if (animate) { 3408 snapToPage(mDefaultPage); 3409 } else { 3410 setCurrentPage(mDefaultPage); 3411 } 3412 getChildAt(mDefaultPage).requestFocus(); 3413 } 3414 3415 @Override 3416 public void syncPages() { 3417 } 3418 3419 @Override 3420 public void syncPageItems(int page) { 3421 } 3422 3423 @Override 3424 protected String getCurrentPageDescription() { 3425 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 3426 return String.format(mContext.getString(R.string.workspace_scroll_format), 3427 page + 1, getChildCount()); 3428 } 3429 3430 public void getLocationInDragLayer(int[] loc) { 3431 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 3432 } 3433 3434 /** 3435 * Return true because we want the scrolling indicator to stretch to fit the space. 3436 */ 3437 protected boolean hasElasticScrollIndicator() { 3438 return true; 3439 } 3440} 3441