Workspace.java revision 8db7000140d3c35be92a4e07cf54ea6ec4ae3030
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.launcher2; 18 19import android.animation.Animator; 20import android.animation.Animator.AnimatorListener; 21import android.animation.AnimatorListenerAdapter; 22import android.animation.AnimatorSet; 23import android.animation.ObjectAnimator; 24import android.animation.TimeInterpolator; 25import android.animation.ValueAnimator; 26import android.animation.ValueAnimator.AnimatorUpdateListener; 27import android.app.AlertDialog; 28import android.app.WallpaperManager; 29import android.appwidget.AppWidgetManager; 30import android.appwidget.AppWidgetProviderInfo; 31import android.content.ClipData; 32import android.content.ClipDescription; 33import android.content.ComponentName; 34import android.content.Context; 35import android.content.Intent; 36import android.content.res.Resources; 37import android.content.res.TypedArray; 38import android.graphics.Bitmap; 39import android.graphics.Camera; 40import android.graphics.Canvas; 41import android.graphics.Matrix; 42import android.graphics.Paint; 43import android.graphics.Point; 44import android.graphics.PorterDuff; 45import android.graphics.Rect; 46import android.graphics.RectF; 47import android.graphics.Region.Op; 48import android.graphics.drawable.Drawable; 49import android.os.IBinder; 50import android.os.Parcelable; 51import android.util.AttributeSet; 52import android.util.DisplayMetrics; 53import android.util.Log; 54import android.util.Pair; 55import android.view.Display; 56import android.view.DragEvent; 57import android.view.MotionEvent; 58import android.view.View; 59import android.view.ViewGroup; 60import android.view.animation.DecelerateInterpolator; 61import android.widget.ImageView; 62import android.widget.TextView; 63import android.widget.Toast; 64 65import com.android.launcher.R; 66import com.android.launcher2.FolderIcon.FolderRingAnimator; 67import com.android.launcher2.InstallWidgetReceiver.WidgetMimeTypeHandlerData; 68 69import java.util.ArrayList; 70import java.util.HashSet; 71import java.util.List; 72 73/** 74 * The workspace is a wide area with a wallpaper and a finite number of pages. 75 * Each page contains a number of icons, folders or widgets the user can 76 * interact with. A workspace is meant to be used with a fixed width only. 77 */ 78public class Workspace extends SmoothPagedView 79 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 80 DragController.DragListener { 81 @SuppressWarnings({"UnusedDeclaration"}) 82 private static final String TAG = "Launcher.Workspace"; 83 84 // Y rotation to apply to the workspace screens 85 private static final float WORKSPACE_ROTATION = 12.5f; 86 private static final float WORKSPACE_OVERSCROLL_ROTATION = 24f; 87 private static float CAMERA_DISTANCE = 6500; 88 89 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 90 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 91 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 92 93 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 94 private static final int ADJACENT_SCREEN_DROP_DURATION = 300; 95 96 // These animators are used to fade the children's outlines 97 private ObjectAnimator mChildrenOutlineFadeInAnimation; 98 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 99 private float mChildrenOutlineAlpha = 0; 100 101 // These properties refer to the background protection gradient used for AllApps and Customize 102 private ValueAnimator mBackgroundFadeInAnimation; 103 private ValueAnimator mBackgroundFadeOutAnimation; 104 private Drawable mBackground; 105 boolean mDrawBackground = true; 106 private float mBackgroundAlpha = 0; 107 private float mOverScrollMaxBackgroundAlpha = 0.0f; 108 private int mOverScrollPageIndex = -1; 109 private AnimatorSet mDividerAnimator; 110 111 private float mWallpaperScrollRatio = 1.0f; 112 113 private final WallpaperManager mWallpaperManager; 114 private IBinder mWindowToken; 115 private static final float WALLPAPER_SCREENS_SPAN = 2f; 116 117 private int mDefaultPage; 118 119 /** 120 * CellInfo for the cell that is currently being dragged 121 */ 122 private CellLayout.CellInfo mDragInfo; 123 124 /** 125 * Target drop area calculated during last acceptDrop call. 126 */ 127 private int[] mTargetCell = new int[2]; 128 129 /** 130 * The CellLayout that is currently being dragged over 131 */ 132 private CellLayout mDragTargetLayout = null; 133 134 private Launcher mLauncher; 135 private IconCache mIconCache; 136 private DragController mDragController; 137 138 // These are temporary variables to prevent having to allocate a new object just to 139 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 140 private int[] mTempCell = new int[2]; 141 private int[] mTempEstimate = new int[2]; 142 private float[] mDragViewVisualCenter = new float[2]; 143 private float[] mTempDragCoordinates = 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 = State.NORMAL; 159 private boolean mIsSwitchingState = false; 160 private boolean mSwitchStateAfterFirstLayout = false; 161 private State mStateAfterFirstLayout; 162 163 private AnimatorSet mAnimator; 164 private AnimatorListener mChangeStateAnimationListener; 165 166 boolean mAnimatingViewIntoPlace = false; 167 boolean mIsDragOccuring = false; 168 boolean mChildrenLayersEnabled = true; 169 170 /** Is the user is dragging an item near the edge of a page? */ 171 private boolean mInScrollArea = false; 172 173 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 174 private Bitmap mDragOutline = null; 175 private final Rect mTempRect = new Rect(); 176 private final int[] mTempXY = new int[2]; 177 private int mDragViewMultiplyColor; 178 179 // Paint used to draw external drop outline 180 private final Paint mExternalDragOutlinePaint = new Paint(); 181 182 // Camera and Matrix used to determine the final position of a neighboring CellLayout 183 private final Matrix mMatrix = new Matrix(); 184 private final Camera mCamera = new Camera(); 185 private final float mTempFloat2[] = new float[2]; 186 187 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 188 int mWallpaperWidth; 189 int mWallpaperHeight; 190 WallpaperOffsetInterpolator mWallpaperOffset; 191 boolean mUpdateWallpaperOffsetImmediately = false; 192 private Runnable mDelayedResizeRunnable; 193 private int mDisplayWidth; 194 private int mDisplayHeight; 195 private boolean mIsStaticWallpaper; 196 private int mWallpaperTravelWidth; 197 198 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 199 private static final int FOLDER_CREATION_TIMEOUT = 250; 200 private final Alarm mFolderCreationAlarm = new Alarm(); 201 private FolderRingAnimator mDragFolderRingAnimator = null; 202 private View mLastDragOverView = null; 203 private boolean mCreateUserFolderOnDrop = false; 204 205 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 206 private float mXDown; 207 private float mYDown; 208 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 209 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 210 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 211 212 // These variables are used for storing the initial and final values during workspace animations 213 private int mSavedScrollX; 214 private float mSavedRotationY; 215 private float mSavedTranslationX; 216 private float mCurrentScaleX; 217 private float mCurrentScaleY; 218 private float mCurrentRotationY; 219 private float mCurrentTranslationX; 220 private float mCurrentTranslationY; 221 private float[] mOldTranslationXs; 222 private float[] mOldTranslationYs; 223 private float[] mOldScaleXs; 224 private float[] mOldScaleYs; 225 private float[] mOldBackgroundAlphas; 226 private float[] mOldBackgroundAlphaMultipliers; 227 private float[] mOldAlphas; 228 private float[] mOldRotationYs; 229 private float[] mNewTranslationXs; 230 private float[] mNewTranslationYs; 231 private float[] mNewScaleXs; 232 private float[] mNewScaleYs; 233 private float[] mNewBackgroundAlphas; 234 private float[] mNewBackgroundAlphaMultipliers; 235 private float[] mNewAlphas; 236 private float[] mNewRotationYs; 237 private float mTransitionProgress; 238 239 /** 240 * Used to inflate the Workspace from XML. 241 * 242 * @param context The application's context. 243 * @param attrs The attributes set containing the Workspace's customization values. 244 */ 245 public Workspace(Context context, AttributeSet attrs) { 246 this(context, attrs, 0); 247 } 248 249 /** 250 * Used to inflate the Workspace from XML. 251 * 252 * @param context The application's context. 253 * @param attrs The attributes set containing the Workspace's customization values. 254 * @param defStyle Unused. 255 */ 256 public Workspace(Context context, AttributeSet attrs, int defStyle) { 257 super(context, attrs, defStyle); 258 mContentIsRefreshable = false; 259 260 // With workspace, data is available straight from the get-go 261 setDataIsReady(); 262 263 mFadeInAdjacentScreens = 264 getResources().getBoolean(R.bool.config_workspaceFadeAdjacentScreens); 265 mWallpaperManager = WallpaperManager.getInstance(context); 266 267 int cellCountX = DEFAULT_CELL_COUNT_X; 268 int cellCountY = DEFAULT_CELL_COUNT_Y; 269 270 TypedArray a = context.obtainStyledAttributes(attrs, 271 R.styleable.Workspace, defStyle, 0); 272 273 final Resources res = context.getResources(); 274 if (LauncherApplication.isScreenLarge()) { 275 // Determine number of rows/columns dynamically 276 // TODO: This code currently fails on tablets with an aspect ratio < 1.3. 277 // Around that ratio we should make cells the same size in portrait and 278 // landscape 279 TypedArray actionBarSizeTypedArray = 280 context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize }); 281 final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); 282 final float systemBarHeight = res.getDimension(R.dimen.status_bar_height); 283 final float smallestScreenDim = res.getConfiguration().smallestScreenWidthDp; 284 285 cellCountX = 1; 286 while (CellLayout.widthInPortrait(res, cellCountX + 1) <= smallestScreenDim) { 287 cellCountX++; 288 } 289 290 cellCountY = 1; 291 while (actionBarHeight + CellLayout.heightInLandscape(res, cellCountY + 1) 292 <= smallestScreenDim - systemBarHeight) { 293 cellCountY++; 294 } 295 } 296 297 mSpringLoadedShrinkFactor = 298 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 299 mDragViewMultiplyColor = res.getColor(R.color.drag_view_multiply_color); 300 301 // if the value is manually specified, use that instead 302 cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX); 303 cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY); 304 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 305 a.recycle(); 306 307 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 308 setHapticFeedbackEnabled(false); 309 310 mLauncher = (Launcher) context; 311 initWorkspace(); 312 313 // Disable multitouch across the workspace/all apps/customize tray 314 setMotionEventSplittingEnabled(true); 315 } 316 317 public void buildPageHardwareLayers() { 318 if (getWindowToken() != null) { 319 final int childCount = getChildCount(); 320 for (int i = 0; i < childCount; i++) { 321 CellLayout cl = (CellLayout) getChildAt(i); 322 cl.buildChildrenLayer(); 323 } 324 } 325 } 326 327 public void onDragStart(DragSource source, Object info, int dragAction) { 328 mIsDragOccuring = true; 329 updateChildrenLayersEnabled(); 330 mLauncher.lockScreenOrientationOnLargeUI(); 331 } 332 333 public void onDragEnd() { 334 mIsDragOccuring = false; 335 updateChildrenLayersEnabled(); 336 mLauncher.unlockScreenOrientationOnLargeUI(); 337 } 338 339 /** 340 * Initializes various states for this workspace. 341 */ 342 protected void initWorkspace() { 343 Context context = getContext(); 344 mCurrentPage = mDefaultPage; 345 Launcher.setScreen(mCurrentPage); 346 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 347 mIconCache = app.getIconCache(); 348 mExternalDragOutlinePaint.setAntiAlias(true); 349 setWillNotDraw(false); 350 setChildrenDrawnWithCacheEnabled(true); 351 352 try { 353 final Resources res = getResources(); 354 mBackground = res.getDrawable(R.drawable.apps_customize_bg); 355 } catch (Resources.NotFoundException e) { 356 // In this case, we will skip drawing background protection 357 } 358 359 mChangeStateAnimationListener = new AnimatorListenerAdapter() { 360 @Override 361 public void onAnimationStart(Animator animation) { 362 mIsSwitchingState = true; 363 } 364 365 @Override 366 public void onAnimationEnd(Animator animation) { 367 mIsSwitchingState = false; 368 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 369 mAnimator = null; 370 updateChildrenLayersEnabled(); 371 } 372 }; 373 374 mSnapVelocity = 600; 375 mWallpaperOffset = new WallpaperOffsetInterpolator(); 376 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 377 mDisplayWidth = display.getWidth(); 378 mDisplayHeight = display.getHeight(); 379 mWallpaperTravelWidth = (int) (mDisplayWidth * 380 wallpaperTravelToScreenWidthRatio(mDisplayWidth, mDisplayHeight)); 381 } 382 383 @Override 384 protected int getScrollMode() { 385 return SmoothPagedView.X_LARGE_MODE; 386 } 387 388 @Override 389 protected void onViewAdded(View child) { 390 super.onViewAdded(child); 391 if (!(child instanceof CellLayout)) { 392 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 393 } 394 CellLayout cl = ((CellLayout) child); 395 cl.setOnInterceptTouchListener(this); 396 cl.setClickable(true); 397 cl.enableHardwareLayers(); 398 } 399 400 /** 401 * @return The open folder on the current screen, or null if there is none 402 */ 403 Folder getOpenFolder() { 404 DragLayer dragLayer = mLauncher.getDragLayer(); 405 int count = dragLayer.getChildCount(); 406 for (int i = 0; i < count; i++) { 407 View child = dragLayer.getChildAt(i); 408 if (child instanceof Folder) { 409 Folder folder = (Folder) child; 410 if (folder.getInfo().opened) 411 return folder; 412 } 413 } 414 return null; 415 } 416 417 boolean isTouchActive() { 418 return mTouchState != TOUCH_STATE_REST; 419 } 420 421 /** 422 * Adds the specified child in the specified screen. The position and dimension of 423 * the child are defined by x, y, spanX and spanY. 424 * 425 * @param child The child to add in one of the workspace's screens. 426 * @param screen The screen in which to add the child. 427 * @param x The X position of the child in the screen's grid. 428 * @param y The Y position of the child in the screen's grid. 429 * @param spanX The number of cells spanned horizontally by the child. 430 * @param spanY The number of cells spanned vertically by the child. 431 */ 432 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY) { 433 addInScreen(child, container, screen, x, y, spanX, spanY, false); 434 } 435 436 /** 437 * Adds the specified child in the specified screen. The position and dimension of 438 * the child are defined by x, y, spanX and spanY. 439 * 440 * @param child The child to add in one of the workspace's screens. 441 * @param screen The screen in which to add the child. 442 * @param x The X position of the child in the screen's grid. 443 * @param y The Y position of the child in the screen's grid. 444 * @param spanX The number of cells spanned horizontally by the child. 445 * @param spanY The number of cells spanned vertically by the child. 446 * @param insert When true, the child is inserted at the beginning of the children list. 447 */ 448 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY, 449 boolean insert) { 450 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 451 if (screen < 0 || screen >= getChildCount()) { 452 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 453 + " (was " + screen + "); skipping child"); 454 return; 455 } 456 } 457 458 final CellLayout layout; 459 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 460 layout = mLauncher.getHotseat().getLayout(); 461 child.setOnKeyListener(null); 462 463 // Hide folder title in the hotseat 464 if (child instanceof FolderIcon) { 465 ((FolderIcon) child).setTextVisible(false); 466 } 467 468 if (screen < 0) { 469 screen = mLauncher.getHotseat().getOrderInHotseat(x, y); 470 } else { 471 // Note: We do this to ensure that the hotseat is always laid out in the orientation 472 // of the hotseat in order regardless of which orientation they were added 473 x = mLauncher.getHotseat().getCellXFromOrder(screen); 474 y = mLauncher.getHotseat().getCellYFromOrder(screen); 475 } 476 } else { 477 // Show folder title if not in the hotseat 478 if (child instanceof FolderIcon) { 479 ((FolderIcon) child).setTextVisible(true); 480 } 481 482 layout = (CellLayout) getChildAt(screen); 483 child.setOnKeyListener(new IconKeyEventListener()); 484 } 485 486 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 487 if (lp == null) { 488 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 489 } else { 490 lp.cellX = x; 491 lp.cellY = y; 492 lp.cellHSpan = spanX; 493 lp.cellVSpan = spanY; 494 } 495 496 if (spanX < 0 && spanY < 0) { 497 lp.isLockedToGrid = false; 498 } 499 500 // Get the canonical child id to uniquely represent this view in this screen 501 int childId = LauncherModel.getCellLayoutChildId(container, screen, x, y, spanX, spanY); 502 boolean markCellsAsOccupied = !(child instanceof Folder); 503 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 504 // TODO: This branch occurs when the workspace is adding views 505 // outside of the defined grid 506 // maybe we should be deleting these items from the LauncherModel? 507 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 508 } 509 510 if (!(child instanceof Folder)) { 511 child.setHapticFeedbackEnabled(false); 512 child.setOnLongClickListener(mLongClickListener); 513 } 514 if (child instanceof DropTarget) { 515 mDragController.addDropTarget((DropTarget) child); 516 } 517 } 518 519 /** 520 * Check if the point (x, y) hits a given page. 521 */ 522 private boolean hitsPage(int index, float x, float y) { 523 final View page = getChildAt(index); 524 if (page != null) { 525 float[] localXY = { x, y }; 526 mapPointFromSelfToChild(page, localXY); 527 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 528 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 529 } 530 return false; 531 } 532 533 @Override 534 protected boolean hitsPreviousPage(float x, float y) { 535 // mNextPage is set to INVALID_PAGE whenever we are stationary. 536 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 537 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 538 539 // Only allow tap to next page on large devices, where there's significant margin outside 540 // the active workspace 541 return LauncherApplication.isScreenLarge() && hitsPage(current - 1, x, y); 542 } 543 544 @Override 545 protected boolean hitsNextPage(float x, float y) { 546 // mNextPage is set to INVALID_PAGE whenever we are stationary. 547 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 548 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 549 550 // Only allow tap to next page on large devices, where there's significant margin outside 551 // the active workspace 552 return LauncherApplication.isScreenLarge() && hitsPage(current + 1, x, y); 553 } 554 555 /** 556 * Called directly from a CellLayout (not by the framework), after we've been added as a 557 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 558 * that it should intercept touch events, which is not something that is normally supported. 559 */ 560 @Override 561 public boolean onTouch(View v, MotionEvent event) { 562 return (isSmall() || mIsSwitchingState); 563 } 564 565 public boolean isSwitchingState() { 566 return mIsSwitchingState; 567 } 568 569 protected void onWindowVisibilityChanged (int visibility) { 570 mLauncher.onWindowVisibilityChanged(visibility); 571 } 572 573 @Override 574 public boolean dispatchUnhandledMove(View focused, int direction) { 575 if (isSmall() || mIsSwitchingState) { 576 // when the home screens are shrunken, shouldn't allow side-scrolling 577 return false; 578 } 579 return super.dispatchUnhandledMove(focused, direction); 580 } 581 582 @Override 583 public boolean onInterceptTouchEvent(MotionEvent ev) { 584 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 585 case MotionEvent.ACTION_DOWN: 586 mXDown = ev.getX(); 587 mYDown = ev.getY(); 588 break; 589 case MotionEvent.ACTION_POINTER_UP: 590 case MotionEvent.ACTION_UP: 591 if (mTouchState == TOUCH_STATE_REST) { 592 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 593 if (!currentPage.lastDownOnOccupiedCell()) { 594 onWallpaperTap(ev); 595 } 596 } 597 } 598 return super.onInterceptTouchEvent(ev); 599 } 600 601 @Override 602 protected void determineScrollingStart(MotionEvent ev) { 603 if (!isSmall() && !mIsSwitchingState) { 604 float deltaX = Math.abs(ev.getX() - mXDown); 605 float deltaY = Math.abs(ev.getY() - mYDown); 606 607 if (Float.compare(deltaX, 0f) == 0) return; 608 609 float slope = deltaY / deltaX; 610 float theta = (float) Math.atan(slope); 611 612 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 613 cancelCurrentPageLongPress(); 614 } 615 616 if (theta > MAX_SWIPE_ANGLE) { 617 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 618 return; 619 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 620 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 621 // increase the touch slop to make it harder to begin scrolling the workspace. This 622 // results in vertically scrolling widgets to more easily. The higher the angle, the 623 // more we increase touch slop. 624 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 625 float extraRatio = (float) 626 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 627 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 628 } else { 629 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 630 super.determineScrollingStart(ev); 631 } 632 } 633 } 634 635 @Override 636 protected boolean isScrollingIndicatorEnabled() { 637 return mState != State.SPRING_LOADED; 638 } 639 640 protected void onPageBeginMoving() { 641 super.onPageBeginMoving(); 642 mIsStaticWallpaper = mWallpaperManager.getWallpaperInfo() == null; 643 644 if (isHardwareAccelerated()) { 645 updateChildrenLayersEnabled(); 646 } else { 647 if (mNextPage != INVALID_PAGE) { 648 // we're snapping to a particular screen 649 enableChildrenCache(mCurrentPage, mNextPage); 650 } else { 651 // this is when user is actively dragging a particular screen, they might 652 // swipe it either left or right (but we won't advance by more than one screen) 653 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 654 } 655 } 656 657 // Only show page outlines as we pan if we are on large screen 658 if (LauncherApplication.isScreenLarge()) { 659 showOutlines(); 660 } 661 } 662 663 protected void onPageEndMoving() { 664 super.onPageEndMoving(); 665 666 if (isHardwareAccelerated()) { 667 updateChildrenLayersEnabled(); 668 } else { 669 clearChildrenCache(); 670 } 671 672 // Hide the outlines, as long as we're not dragging 673 if (!mDragController.dragging()) { 674 // Only hide page outlines as we pan if we are on large screen 675 if (LauncherApplication.isScreenLarge()) { 676 hideOutlines(); 677 } 678 } 679 mOverScrollMaxBackgroundAlpha = 0.0f; 680 mOverScrollPageIndex = -1; 681 682 if (mDelayedResizeRunnable != null) { 683 mDelayedResizeRunnable.run(); 684 mDelayedResizeRunnable = null; 685 } 686 } 687 688 @Override 689 protected void notifyPageSwitchListener() { 690 super.notifyPageSwitchListener(); 691 Launcher.setScreen(mCurrentPage); 692 }; 693 694 // As a ratio of screen height, the total distance we want the parallax effect to span 695 // vertically 696 private float wallpaperTravelToScreenHeightRatio(int width, int height) { 697 return 1.1f; 698 } 699 700 // As a ratio of screen height, the total distance we want the parallax effect to span 701 // horizontally 702 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 703 float aspectRatio = width / (float) height; 704 705 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 706 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 707 // We will use these two data points to extrapolate how much the wallpaper parallax effect 708 // to span (ie travel) at any aspect ratio: 709 710 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 711 final float ASPECT_RATIO_PORTRAIT = 10/16f; 712 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 713 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 714 715 // To find out the desired width at different aspect ratios, we use the following two 716 // formulas, where the coefficient on x is the aspect ratio (width/height): 717 // (16/10)x + y = 1.5 718 // (10/16)x + y = 1.2 719 // We solve for x and y and end up with a final formula: 720 final float x = 721 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 722 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 723 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 724 return x * aspectRatio + y; 725 } 726 727 // The range of scroll values for Workspace 728 private int getScrollRange() { 729 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 730 } 731 732 protected void setWallpaperDimension() { 733 DisplayMetrics displayMetrics = new DisplayMetrics(); 734 mLauncher.getWindowManager().getDefaultDisplay().getRealMetrics(displayMetrics); 735 final int maxDim = Math.max(displayMetrics.widthPixels, displayMetrics.heightPixels); 736 final int minDim = Math.min(displayMetrics.widthPixels, displayMetrics.heightPixels); 737 738 // We need to ensure that there is enough extra space in the wallpaper for the intended 739 // parallax effects 740 if (LauncherApplication.isScreenLarge()) { 741 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 742 mWallpaperHeight = (int)(maxDim * wallpaperTravelToScreenHeightRatio(maxDim, minDim)); 743 } else { 744 mWallpaperWidth = Math.max((int) (minDim * WALLPAPER_SCREENS_SPAN), maxDim); 745 mWallpaperHeight = maxDim; 746 } 747 new Thread("setWallpaperDimension") { 748 public void run() { 749 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 750 } 751 }.start(); 752 } 753 754 public void setVerticalWallpaperOffset(float offset) { 755 mWallpaperOffset.setFinalY(offset); 756 } 757 public float getVerticalWallpaperOffset() { 758 return mWallpaperOffset.getCurrY(); 759 } 760 public void setHorizontalWallpaperOffset(float offset) { 761 mWallpaperOffset.setFinalX(offset); 762 } 763 public float getHorizontalWallpaperOffset() { 764 return mWallpaperOffset.getCurrX(); 765 } 766 767 private float wallpaperOffsetForCurrentScroll() { 768 final boolean overScrollWallpaper = LauncherApplication.isScreenLarge(); 769 final boolean isStaticWallpaper = mIsStaticWallpaper; 770 // The wallpaper travel width is how far, from left to right, the wallpaper will move 771 // at this orientation (for example, in portrait mode we don't move all the way to the 772 // edges of the wallpaper, or otherwise the parallax effect would be too strong) 773 int wallpaperTravelWidth = mWallpaperTravelWidth; 774 if (!overScrollWallpaper || !isStaticWallpaper) { 775 wallpaperTravelWidth = mWallpaperWidth; 776 } 777 778 // Set wallpaper offset steps (1 / (number of screens - 1)) 779 // We have 3 vertical offset states (centered, and then top/bottom aligned 780 // for all apps/customize) 781 if (LauncherApplication.isScreenLarge()) { 782 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f / (3 - 1)); 783 } else { 784 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f); 785 } 786 787 // For the purposes of computing the scrollRange and overScrollOffset, we ignore 788 // assume that mLayoutScale is 1. This means that when we're in spring-loaded mode, 789 // there's no discrepancy between the wallpaper offset for a given page. 790 float layoutScale = mLayoutScale; 791 mLayoutScale = 1f; 792 int scrollRange = getScrollRange(); 793 float scrollProgressOffset = 0; 794 795 // Account for over scroll: you only see the absolute edge of the wallpaper if 796 // you over scroll as far as you can in landscape mode. Only do this for static wallpapers 797 // because live wallpapers (and probably 3rd party wallpaper providers) rely on the offset 798 // being even intervals from 0 to 1 (eg [0, 0.25, 0.5, 0.75, 1]) 799 if (isStaticWallpaper && overScrollWallpaper) { 800 int overScrollOffset = (int) (maxOverScroll() * mDisplayWidth); 801 scrollProgressOffset += overScrollOffset / (float) getScrollRange(); 802 scrollRange += 2 * overScrollOffset; 803 } 804 805 // Again, we adjust the wallpaper offset to be consistent between values of mLayoutScale 806 807 float adjustedScrollX = overScrollWallpaper ? 808 mScrollX : Math.max(0, Math.min(mScrollX, mMaxScrollX)); 809 adjustedScrollX *= mWallpaperScrollRatio; 810 mLayoutScale = layoutScale; 811 812 float scrollProgress = 813 adjustedScrollX / (float) scrollRange + scrollProgressOffset; 814 float offsetInDips = wallpaperTravelWidth * scrollProgress + 815 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 816 float offset = offsetInDips / (float) mWallpaperWidth; 817 return offset; 818 } 819 private void syncWallpaperOffsetWithScroll() { 820 final boolean enableWallpaperEffects = isHardwareAccelerated(); 821 if (enableWallpaperEffects) { 822 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 823 } 824 } 825 826 public void updateWallpaperOffsetImmediately() { 827 mUpdateWallpaperOffsetImmediately = true; 828 } 829 830 private void updateWallpaperOffsets() { 831 boolean updateNow = false; 832 boolean keepUpdating = true; 833 if (mUpdateWallpaperOffsetImmediately) { 834 updateNow = true; 835 keepUpdating = false; 836 mWallpaperOffset.jumpToFinal(); 837 mUpdateWallpaperOffsetImmediately = false; 838 } else { 839 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 840 } 841 if (updateNow) { 842 if (mWindowToken != null) { 843 mWallpaperManager.setWallpaperOffsets(mWindowToken, 844 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 845 } 846 } 847 if (keepUpdating) { 848 fastInvalidate(); 849 } 850 } 851 852 @Override 853 protected void updateCurrentPageScroll() { 854 super.updateCurrentPageScroll(); 855 computeWallpaperScrollRatio(mCurrentPage); 856 } 857 858 @Override 859 protected void snapToPage(int whichPage) { 860 super.snapToPage(whichPage); 861 computeWallpaperScrollRatio(whichPage); 862 } 863 864 private void computeWallpaperScrollRatio(int page) { 865 // Here, we determine what the desired scroll would be with and without a layout scale, 866 // and compute a ratio between the two. This allows us to adjust the wallpaper offset 867 // as though there is no layout scale. 868 float layoutScale = mLayoutScale; 869 int scaled = getChildOffset(page) - getRelativeChildOffset(page); 870 mLayoutScale = 1.0f; 871 float unscaled = getChildOffset(page) - getRelativeChildOffset(page); 872 mLayoutScale = layoutScale; 873 if (scaled > 0) { 874 mWallpaperScrollRatio = (1.0f * unscaled) / scaled; 875 } else { 876 mWallpaperScrollRatio = 1f; 877 } 878 } 879 880 class WallpaperOffsetInterpolator { 881 float mFinalHorizontalWallpaperOffset = 0.0f; 882 float mFinalVerticalWallpaperOffset = 0.5f; 883 float mHorizontalWallpaperOffset = 0.0f; 884 float mVerticalWallpaperOffset = 0.5f; 885 long mLastWallpaperOffsetUpdateTime; 886 boolean mIsMovingFast; 887 boolean mOverrideHorizontalCatchupConstant; 888 float mHorizontalCatchupConstant = 0.35f; 889 float mVerticalCatchupConstant = 0.35f; 890 891 public WallpaperOffsetInterpolator() { 892 mVerticalWallpaperOffset = LauncherApplication.isScreenLarge() ? 0.5f : 0f; 893 mFinalVerticalWallpaperOffset = LauncherApplication.isScreenLarge() ? 0.5f : 0f; 894 } 895 896 public void setOverrideHorizontalCatchupConstant(boolean override) { 897 mOverrideHorizontalCatchupConstant = override; 898 } 899 900 public void setHorizontalCatchupConstant(float f) { 901 mHorizontalCatchupConstant = f; 902 } 903 904 public void setVerticalCatchupConstant(float f) { 905 mVerticalCatchupConstant = f; 906 } 907 908 public boolean computeScrollOffset() { 909 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 910 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 911 mIsMovingFast = false; 912 return false; 913 } 914 boolean isLandscape = mDisplayWidth > mDisplayHeight; 915 916 long currentTime = System.currentTimeMillis(); 917 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 918 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 919 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 920 921 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 922 if (!mIsMovingFast && xdiff > 0.07) { 923 mIsMovingFast = true; 924 } 925 926 float fractionToCatchUpIn1MsHorizontal; 927 if (mOverrideHorizontalCatchupConstant) { 928 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 929 } else if (mIsMovingFast) { 930 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 931 } else { 932 // slow 933 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 934 } 935 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 936 937 fractionToCatchUpIn1MsHorizontal /= 33f; 938 fractionToCatchUpIn1MsVertical /= 33f; 939 940 final float UPDATE_THRESHOLD = 0.00001f; 941 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 942 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 943 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 944 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 945 946 // Don't have any lag between workspace and wallpaper on non-large devices 947 if (!LauncherApplication.isScreenLarge() || jumpToFinalValue) { 948 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 949 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 950 } else { 951 float percentToCatchUpVertical = 952 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 953 float percentToCatchUpHorizontal = 954 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 955 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 956 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 957 } 958 959 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 960 return true; 961 } 962 963 public float getCurrX() { 964 return mHorizontalWallpaperOffset; 965 } 966 967 public float getFinalX() { 968 return mFinalHorizontalWallpaperOffset; 969 } 970 971 public float getCurrY() { 972 return mVerticalWallpaperOffset; 973 } 974 975 public float getFinalY() { 976 return mFinalVerticalWallpaperOffset; 977 } 978 979 public void setFinalX(float x) { 980 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 981 } 982 983 public void setFinalY(float y) { 984 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 985 } 986 987 public void jumpToFinal() { 988 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 989 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 990 } 991 } 992 993 @Override 994 public void computeScroll() { 995 super.computeScroll(); 996 syncWallpaperOffsetWithScroll(); 997 } 998 999 void showOutlines() { 1000 if (!isSmall() && !mIsSwitchingState) { 1001 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1002 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1003 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 1004 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 1005 mChildrenOutlineFadeInAnimation.start(); 1006 } 1007 } 1008 1009 void hideOutlines() { 1010 if (!isSmall() && !mIsSwitchingState) { 1011 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1012 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1013 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 1014 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 1015 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 1016 mChildrenOutlineFadeOutAnimation.start(); 1017 } 1018 } 1019 1020 public void showOutlinesTemporarily() { 1021 if (!mIsPageMoving && !isTouchActive()) { 1022 snapToPage(mCurrentPage); 1023 } 1024 } 1025 1026 public void setChildrenOutlineAlpha(float alpha) { 1027 mChildrenOutlineAlpha = alpha; 1028 for (int i = 0; i < getChildCount(); i++) { 1029 CellLayout cl = (CellLayout) getChildAt(i); 1030 cl.setBackgroundAlpha(alpha); 1031 } 1032 } 1033 1034 public float getChildrenOutlineAlpha() { 1035 return mChildrenOutlineAlpha; 1036 } 1037 1038 void disableBackground() { 1039 mDrawBackground = false; 1040 } 1041 void enableBackground() { 1042 mDrawBackground = true; 1043 } 1044 1045 private void animateBackgroundGradient(float finalAlpha, boolean animated) { 1046 if (mBackground == null) return; 1047 if (mBackgroundFadeInAnimation != null) { 1048 mBackgroundFadeInAnimation.cancel(); 1049 mBackgroundFadeInAnimation = null; 1050 } 1051 if (mBackgroundFadeOutAnimation != null) { 1052 mBackgroundFadeOutAnimation.cancel(); 1053 mBackgroundFadeOutAnimation = null; 1054 } 1055 float startAlpha = getBackgroundAlpha(); 1056 if (finalAlpha != startAlpha) { 1057 if (animated) { 1058 mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(startAlpha, finalAlpha); 1059 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1060 public void onAnimationUpdate(ValueAnimator animation) { 1061 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1062 } 1063 }); 1064 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1065 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1066 mBackgroundFadeOutAnimation.start(); 1067 } else { 1068 setBackgroundAlpha(finalAlpha); 1069 } 1070 } 1071 } 1072 1073 public void setBackgroundAlpha(float alpha) { 1074 if (alpha != mBackgroundAlpha) { 1075 mBackgroundAlpha = alpha; 1076 invalidate(); 1077 } 1078 } 1079 1080 public float getBackgroundAlpha() { 1081 return mBackgroundAlpha; 1082 } 1083 1084 /** 1085 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 1086 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 1087 * as being larger. This method computes what offset the rotated view should be translated 1088 * in order to minimize this perceived gap. 1089 * @param degrees Angle of the view 1090 * @param width Width of the view 1091 * @param height Height of the view 1092 * @return Offset to be used in a View.setTranslationX() call 1093 */ 1094 private float getOffsetXForRotation(float degrees, int width, int height) { 1095 mMatrix.reset(); 1096 mCamera.save(); 1097 mCamera.rotateY(Math.abs(degrees)); 1098 mCamera.getMatrix(mMatrix); 1099 mCamera.restore(); 1100 1101 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 1102 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 1103 mTempFloat2[0] = width; 1104 mTempFloat2[1] = height; 1105 mMatrix.mapPoints(mTempFloat2); 1106 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 1107 } 1108 1109 float backgroundAlphaInterpolator(float r) { 1110 float pivotA = 0.1f; 1111 float pivotB = 0.4f; 1112 if (r < pivotA) { 1113 return 0; 1114 } else if (r > pivotB) { 1115 return 1.0f; 1116 } else { 1117 return (r - pivotA)/(pivotB - pivotA); 1118 } 1119 } 1120 1121 float overScrollBackgroundAlphaInterpolator(float r) { 1122 float threshold = 0.08f; 1123 1124 if (r > mOverScrollMaxBackgroundAlpha) { 1125 mOverScrollMaxBackgroundAlpha = r; 1126 } else if (r < mOverScrollMaxBackgroundAlpha) { 1127 r = mOverScrollMaxBackgroundAlpha; 1128 } 1129 1130 return Math.min(r / threshold, 1.0f); 1131 } 1132 1133 private void screenScrolledLargeUI(int screenCenter) { 1134 for (int i = 0; i < getChildCount(); i++) { 1135 CellLayout cl = (CellLayout) getChildAt(i); 1136 if (cl != null) { 1137 float scrollProgress = getScrollProgress(screenCenter, cl, i); 1138 float rotation = WORKSPACE_ROTATION * scrollProgress; 1139 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1140 1141 // If the current page (i) is being over scrolled, we use a different 1142 // set of rules for setting the background alpha multiplier. 1143 if (!isSmall()) { 1144 if ((mScrollX < 0 && i == 0) || (mScrollX > mMaxScrollX && 1145 i == getChildCount() -1 )) { 1146 cl.setBackgroundAlphaMultiplier( 1147 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 1148 mOverScrollPageIndex = i; 1149 } else if (mOverScrollPageIndex != i) { 1150 cl.setBackgroundAlphaMultiplier( 1151 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1152 } 1153 } 1154 cl.setTranslationX(translationX); 1155 cl.setRotationY(rotation); 1156 } 1157 } 1158 } 1159 1160 private void resetCellLayoutTransforms(CellLayout cl, boolean left) { 1161 cl.setTranslationX(0); 1162 cl.setRotationY(0); 1163 cl.setOverScrollAmount(0, left); 1164 cl.setPivotX(cl.getMeasuredWidth() / 2); 1165 cl.setPivotY(cl.getMeasuredHeight() / 2); 1166 } 1167 1168 private void screenScrolledStandardUI(int screenCenter) { 1169 if (mScrollX < 0 || mScrollX > mMaxScrollX) { 1170 int index = mScrollX < 0 ? 0 : getChildCount() - 1; 1171 CellLayout cl = (CellLayout) getChildAt(index); 1172 float scrollProgress = getScrollProgress(screenCenter, cl, index); 1173 cl.setOverScrollAmount(Math.abs(scrollProgress), index == 0); 1174 float translationX = index == 0 ? mScrollX : - (mMaxScrollX - mScrollX); 1175 float rotation = - WORKSPACE_OVERSCROLL_ROTATION * scrollProgress; 1176 cl.setCameraDistance(mDensity * CAMERA_DISTANCE); 1177 cl.setPivotX(cl.getMeasuredWidth() * (index == 0 ? 0.75f : 0.25f)); 1178 cl.setTranslationX(translationX); 1179 cl.setRotationY(rotation); 1180 } else { 1181 // We don't want to mess with the translations during transitions 1182 if (!isSwitchingState()) { 1183 resetCellLayoutTransforms((CellLayout) getChildAt(0), true); 1184 resetCellLayoutTransforms((CellLayout) getChildAt(getChildCount() - 1), false); 1185 } 1186 } 1187 } 1188 1189 @Override 1190 protected void screenScrolled(int screenCenter) { 1191 super.screenScrolled(screenCenter); 1192 if (LauncherApplication.isScreenLarge()) { 1193 screenScrolledLargeUI(screenCenter); 1194 } else { 1195 screenScrolledStandardUI(screenCenter); 1196 } 1197 } 1198 1199 @Override 1200 protected void overScroll(float amount) { 1201 if (LauncherApplication.isScreenLarge()) { 1202 dampedOverScroll(amount); 1203 } else { 1204 acceleratedOverScroll(amount); 1205 } 1206 } 1207 1208 protected void onAttachedToWindow() { 1209 super.onAttachedToWindow(); 1210 mWindowToken = getWindowToken(); 1211 computeScroll(); 1212 mDragController.setWindowToken(mWindowToken); 1213 } 1214 1215 protected void onDetachedFromWindow() { 1216 mWindowToken = null; 1217 } 1218 1219 @Override 1220 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1221 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1222 mUpdateWallpaperOffsetImmediately = true; 1223 } 1224 super.onLayout(changed, left, top, right, bottom); 1225 1226 // if shrinkToBottom() is called on initialization, it has to be deferred 1227 // until after the first call to onLayout so that it has the correct width 1228 if (mSwitchStateAfterFirstLayout) { 1229 mSwitchStateAfterFirstLayout = false; 1230 // shrink can trigger a synchronous onLayout call, so we 1231 // post this to avoid a stack overflow / tangled onLayout calls 1232 post(new Runnable() { 1233 public void run() { 1234 changeState(mStateAfterFirstLayout, false); 1235 } 1236 }); 1237 } 1238 } 1239 1240 @Override 1241 protected void onDraw(Canvas canvas) { 1242 updateWallpaperOffsets(); 1243 1244 // Draw the background gradient if necessary 1245 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1246 int alpha = (int) (mBackgroundAlpha * 255); 1247 mBackground.setAlpha(alpha); 1248 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1249 getMeasuredHeight()); 1250 mBackground.draw(canvas); 1251 } 1252 1253 super.onDraw(canvas); 1254 } 1255 1256 @Override 1257 protected void dispatchDraw(Canvas canvas) { 1258 super.dispatchDraw(canvas); 1259 1260 if (mInScrollArea && !LauncherApplication.isScreenLarge()) { 1261 final int width = getWidth(); 1262 final int height = getHeight(); 1263 final int pageHeight = getChildAt(0).getHeight(); 1264 1265 // Set the height of the outline to be the height of the page 1266 final int offset = (height - pageHeight - mPaddingTop - mPaddingBottom) / 2; 1267 final int paddingTop = mPaddingTop + offset; 1268 final int paddingBottom = mPaddingBottom + offset; 1269 1270 final CellLayout leftPage = (CellLayout) getChildAt(mCurrentPage - 1); 1271 final CellLayout rightPage = (CellLayout) getChildAt(mCurrentPage + 1); 1272 1273 if (leftPage != null && leftPage.getIsDragOverlapping()) { 1274 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left_holo); 1275 d.setBounds(mScrollX, paddingTop, mScrollX + d.getIntrinsicWidth(), 1276 height - paddingBottom); 1277 d.draw(canvas); 1278 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 1279 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right_holo); 1280 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), paddingTop, mScrollX + width, 1281 height - paddingBottom); 1282 d.draw(canvas); 1283 } 1284 } 1285 } 1286 1287 @Override 1288 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1289 if (!mLauncher.isAllAppsVisible()) { 1290 final Folder openFolder = getOpenFolder(); 1291 if (openFolder != null) { 1292 return openFolder.requestFocus(direction, previouslyFocusedRect); 1293 } else { 1294 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1295 } 1296 } 1297 return false; 1298 } 1299 1300 @Override 1301 public int getDescendantFocusability() { 1302 if (isSmall()) { 1303 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1304 } 1305 return super.getDescendantFocusability(); 1306 } 1307 1308 @Override 1309 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1310 if (!mLauncher.isAllAppsVisible()) { 1311 final Folder openFolder = getOpenFolder(); 1312 if (openFolder != null) { 1313 openFolder.addFocusables(views, direction); 1314 } else { 1315 super.addFocusables(views, direction, focusableMode); 1316 } 1317 } 1318 } 1319 1320 public boolean isSmall() { 1321 return mState == State.SMALL || mState == State.SPRING_LOADED; 1322 } 1323 1324 void enableChildrenCache(int fromPage, int toPage) { 1325 if (fromPage > toPage) { 1326 final int temp = fromPage; 1327 fromPage = toPage; 1328 toPage = temp; 1329 } 1330 1331 final int screenCount = getChildCount(); 1332 1333 fromPage = Math.max(fromPage, 0); 1334 toPage = Math.min(toPage, screenCount - 1); 1335 1336 for (int i = fromPage; i <= toPage; i++) { 1337 final CellLayout layout = (CellLayout) getChildAt(i); 1338 layout.setChildrenDrawnWithCacheEnabled(true); 1339 layout.setChildrenDrawingCacheEnabled(true); 1340 } 1341 } 1342 1343 void clearChildrenCache() { 1344 final int screenCount = getChildCount(); 1345 for (int i = 0; i < screenCount; i++) { 1346 final CellLayout layout = (CellLayout) getChildAt(i); 1347 layout.setChildrenDrawnWithCacheEnabled(false); 1348 // In software mode, we don't want the items to continue to be drawn into bitmaps 1349 if (!isHardwareAccelerated()) { 1350 layout.setChildrenDrawingCacheEnabled(false); 1351 } 1352 } 1353 } 1354 1355 private void updateChildrenLayersEnabled() { 1356 boolean small = isSmall() || mIsSwitchingState; 1357 boolean dragging = mAnimatingViewIntoPlace || mIsDragOccuring; 1358 boolean enableChildrenLayers = small || dragging || isPageMoving(); 1359 1360 if (enableChildrenLayers != mChildrenLayersEnabled) { 1361 mChildrenLayersEnabled = enableChildrenLayers; 1362 for (int i = 0; i < getPageCount(); i++) { 1363 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(enableChildrenLayers); 1364 } 1365 } 1366 } 1367 1368 protected void onWallpaperTap(MotionEvent ev) { 1369 final int[] position = mTempCell; 1370 getLocationOnScreen(position); 1371 1372 int pointerIndex = ev.getActionIndex(); 1373 position[0] += (int) ev.getX(pointerIndex); 1374 position[1] += (int) ev.getY(pointerIndex); 1375 1376 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1377 ev.getAction() == MotionEvent.ACTION_UP 1378 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1379 position[0], position[1], 0, null); 1380 } 1381 1382 @Override 1383 protected void updateAdjacentPagesAlpha() { 1384 if (!isSmall()) { 1385 super.updateAdjacentPagesAlpha(); 1386 } 1387 } 1388 1389 /* 1390 * This interpolator emulates the rate at which the perceived scale of an object changes 1391 * as its distance from a camera increases. When this interpolator is applied to a scale 1392 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1393 * from the camera. 1394 */ 1395 static class ZInterpolator implements TimeInterpolator { 1396 private float focalLength; 1397 1398 public ZInterpolator(float foc) { 1399 focalLength = foc; 1400 } 1401 1402 public float getInterpolation(float input) { 1403 return (1.0f - focalLength / (focalLength + input)) / 1404 (1.0f - focalLength / (focalLength + 1.0f)); 1405 } 1406 } 1407 1408 /* 1409 * The exact reverse of ZInterpolator. 1410 */ 1411 static class InverseZInterpolator implements TimeInterpolator { 1412 private ZInterpolator zInterpolator; 1413 public InverseZInterpolator(float foc) { 1414 zInterpolator = new ZInterpolator(foc); 1415 } 1416 public float getInterpolation(float input) { 1417 return 1 - zInterpolator.getInterpolation(1 - input); 1418 } 1419 } 1420 1421 /* 1422 * ZInterpolator compounded with an ease-out. 1423 */ 1424 static class ZoomOutInterpolator implements TimeInterpolator { 1425 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(0.75f); 1426 private final ZInterpolator zInterpolator = new ZInterpolator(0.13f); 1427 1428 public float getInterpolation(float input) { 1429 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1430 } 1431 } 1432 1433 /* 1434 * InvereZInterpolator compounded with an ease-out. 1435 */ 1436 static class ZoomInInterpolator implements TimeInterpolator { 1437 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1438 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1439 1440 public float getInterpolation(float input) { 1441 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1442 } 1443 } 1444 1445 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1446 1447 /* 1448 * 1449 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1450 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1451 * 1452 * These methods mark the appropriate pages as accepting drops (which alters their visual 1453 * appearance). 1454 * 1455 */ 1456 public void onDragStartedWithItem(View v) { 1457 final Canvas canvas = new Canvas(); 1458 1459 // We need to add extra padding to the bitmap to make room for the glow effect 1460 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1461 1462 // The outline is used to visualize where the item will land if dropped 1463 mDragOutline = createDragOutline(v, canvas, bitmapPadding); 1464 } 1465 1466 public void onDragStartedWithItemSpans(int spanX, int spanY, Bitmap b) { 1467 onDragStartedWithItemSpans(spanX, spanY, b, null); 1468 } 1469 1470 public void onDragStartedWithItemSpans(int spanX, int spanY, Bitmap b, Paint alphaClipPaint) { 1471 final Canvas canvas = new Canvas(); 1472 1473 // We need to add extra padding to the bitmap to make room for the glow effect 1474 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1475 1476 CellLayout cl = (CellLayout) getChildAt(0); 1477 1478 int[] size = cl.cellSpansToSize(spanX, spanY); 1479 1480 // The outline is used to visualize where the item will land if dropped 1481 mDragOutline = createDragOutline(b, canvas, bitmapPadding, size[0], size[1], alphaClipPaint); 1482 } 1483 1484 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1485 // never dragged over 1486 public void onDragStopped(boolean success) { 1487 // In the success case, DragController has already called onDragExit() 1488 if (!success) { 1489 doDragExit(null); 1490 } 1491 } 1492 1493 public void exitWidgetResizeMode() { 1494 DragLayer dragLayer = mLauncher.getDragLayer(); 1495 dragLayer.clearAllResizeFrames(); 1496 } 1497 1498 private void initAnimationArrays() { 1499 final int childCount = getChildCount(); 1500 if (mOldTranslationXs != null) return; 1501 mOldTranslationXs = new float[childCount]; 1502 mOldTranslationYs = new float[childCount]; 1503 mOldScaleXs = new float[childCount]; 1504 mOldScaleYs = new float[childCount]; 1505 mOldBackgroundAlphas = new float[childCount]; 1506 mOldBackgroundAlphaMultipliers = new float[childCount]; 1507 mOldAlphas = new float[childCount]; 1508 mOldRotationYs = new float[childCount]; 1509 mNewTranslationXs = new float[childCount]; 1510 mNewTranslationYs = new float[childCount]; 1511 mNewScaleXs = new float[childCount]; 1512 mNewScaleYs = new float[childCount]; 1513 mNewBackgroundAlphas = new float[childCount]; 1514 mNewBackgroundAlphaMultipliers = new float[childCount]; 1515 mNewAlphas = new float[childCount]; 1516 mNewRotationYs = new float[childCount]; 1517 } 1518 1519 public void changeState(State shrinkState) { 1520 changeState(shrinkState, true); 1521 } 1522 1523 void changeState(final State state, boolean animated) { 1524 changeState(state, animated, 0); 1525 } 1526 1527 void changeState(final State state, boolean animated, int delay) { 1528 if (mFirstLayout) { 1529 // (mFirstLayout == "first layout has not happened yet") 1530 // cancel any pending shrinks that were set earlier 1531 mSwitchStateAfterFirstLayout = false; 1532 mStateAfterFirstLayout = state; 1533 return; 1534 } 1535 1536 // Initialize animation arrays for the first time if necessary 1537 initAnimationArrays(); 1538 1539 // Cancel any running transition animations 1540 if (mAnimator != null) mAnimator.cancel(); 1541 mAnimator = new AnimatorSet(); 1542 1543 // Stop any scrolling, move to the current page right away 1544 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1545 1546 final State oldState = mState; 1547 final boolean oldStateIsNormal = (oldState == State.NORMAL); 1548 final boolean oldStateIsSpringLoaded = (oldState == State.SPRING_LOADED); 1549 final boolean oldStateIsSmall = (oldState == State.SMALL); 1550 mState = state; 1551 final boolean stateIsNormal = (state == State.NORMAL); 1552 final boolean stateIsSpringLoaded = (state == State.SPRING_LOADED); 1553 final boolean stateIsSmall = (state == State.SMALL); 1554 float finalScaleFactor = 1.0f; 1555 float finalBackgroundAlpha = stateIsSpringLoaded ? 1.0f : 0f; 1556 float translationX = 0; 1557 float translationY = 0; 1558 boolean zoomIn = true; 1559 1560 if (state != State.NORMAL) { 1561 finalScaleFactor = mSpringLoadedShrinkFactor - (stateIsSmall ? 0.1f : 0); 1562 if (oldStateIsNormal && stateIsSmall) { 1563 zoomIn = false; 1564 setLayoutScale(finalScaleFactor); 1565 updateChildrenLayersEnabled(); 1566 } else { 1567 finalBackgroundAlpha = 1.0f; 1568 setLayoutScale(finalScaleFactor); 1569 } 1570 } else { 1571 setLayoutScale(1.0f); 1572 } 1573 1574 final int duration = zoomIn ? 1575 getResources().getInteger(R.integer.config_workspaceUnshrinkTime) : 1576 getResources().getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1577 for (int i = 0; i < getChildCount(); i++) { 1578 final CellLayout cl = (CellLayout) getChildAt(i); 1579 float rotation = 0f; 1580 float initialAlpha = cl.getAlpha(); 1581 float finalAlphaMultiplierValue = 1f; 1582 float finalAlpha = (!mFadeInAdjacentScreens || stateIsSpringLoaded || 1583 (i == mCurrentPage)) ? 1f : 0f; 1584 1585 // Determine the pages alpha during the state transition 1586 if ((oldStateIsSmall && stateIsNormal) || 1587 (oldStateIsNormal && stateIsSmall)) { 1588 // To/from workspace - only show the current page unless the transition is not 1589 // animated and the animation end callback below doesn't run 1590 if (i == mCurrentPage || !animated) { 1591 finalAlpha = 1f; 1592 finalAlphaMultiplierValue = 0f; 1593 } else { 1594 initialAlpha = 0f; 1595 finalAlpha = 0f; 1596 } 1597 } 1598 1599 // Update the rotation of the screen (don't apply rotation on Phone UI) 1600 if (LauncherApplication.isScreenLarge()) { 1601 if (i < mCurrentPage) { 1602 rotation = WORKSPACE_ROTATION; 1603 } else if (i > mCurrentPage) { 1604 rotation = -WORKSPACE_ROTATION; 1605 } 1606 } 1607 1608 // If the screen is not xlarge, then don't rotate the CellLayouts 1609 // NOTE: If we don't update the side pages alpha, then we should not hide the side 1610 // pages. see unshrink(). 1611 if (LauncherApplication.isScreenLarge()) { 1612 translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1613 } 1614 1615 mOldAlphas[i] = initialAlpha; 1616 mNewAlphas[i] = finalAlpha; 1617 if (animated) { 1618 mOldTranslationXs[i] = cl.getTranslationX(); 1619 mOldTranslationYs[i] = cl.getTranslationY(); 1620 mOldScaleXs[i] = cl.getScaleX(); 1621 mOldScaleYs[i] = cl.getScaleY(); 1622 mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1623 mOldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1624 mOldRotationYs[i] = cl.getRotationY(); 1625 1626 mNewTranslationXs[i] = translationX; 1627 mNewTranslationYs[i] = translationY; 1628 mNewScaleXs[i] = finalScaleFactor; 1629 mNewScaleYs[i] = finalScaleFactor; 1630 mNewBackgroundAlphas[i] = finalBackgroundAlpha; 1631 mNewBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1632 mNewRotationYs[i] = rotation; 1633 } else { 1634 cl.setTranslationX(translationX); 1635 cl.setTranslationY(translationY); 1636 cl.setScaleX(finalScaleFactor); 1637 cl.setScaleY(finalScaleFactor); 1638 cl.setBackgroundAlpha(finalBackgroundAlpha); 1639 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1640 cl.setAlpha(finalAlpha); 1641 cl.setRotationY(rotation); 1642 mChangeStateAnimationListener.onAnimationEnd(null); 1643 } 1644 } 1645 1646 if (animated) { 1647 ValueAnimator animWithInterpolator = 1648 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1649 1650 if (zoomIn) { 1651 animWithInterpolator.setInterpolator(mZoomInInterpolator); 1652 } 1653 1654 animWithInterpolator.addListener(new AnimatorListenerAdapter() { 1655 @Override 1656 public void onAnimationEnd(android.animation.Animator animation) { 1657 // The above code to determine initialAlpha and finalAlpha will ensure that only 1658 // the current page is visible during (and subsequently, after) the transition 1659 // animation. If fade adjacent pages is disabled, then re-enable the page 1660 // visibility after the transition animation. 1661 if (!mFadeInAdjacentScreens && stateIsNormal && oldStateIsSmall) { 1662 for (int i = 0; i < getChildCount(); i++) { 1663 final CellLayout cl = (CellLayout) getChildAt(i); 1664 cl.setAlpha(1f); 1665 } 1666 } 1667 } 1668 }); 1669 animWithInterpolator.addUpdateListener(new LauncherAnimatorUpdateListener() { 1670 public void onAnimationUpdate(float a, float b) { 1671 mTransitionProgress = b; 1672 if (b == 0f) { 1673 // an optimization, but not required 1674 return; 1675 } 1676 invalidate(); 1677 for (int i = 0; i < getChildCount(); i++) { 1678 final CellLayout cl = (CellLayout) getChildAt(i); 1679 cl.fastInvalidate(); 1680 cl.setFastTranslationX(a * mOldTranslationXs[i] + b * mNewTranslationXs[i]); 1681 cl.setFastTranslationY(a * mOldTranslationYs[i] + b * mNewTranslationYs[i]); 1682 cl.setFastScaleX(a * mOldScaleXs[i] + b * mNewScaleXs[i]); 1683 cl.setFastScaleY(a * mOldScaleYs[i] + b * mNewScaleYs[i]); 1684 cl.setFastBackgroundAlpha( 1685 a * mOldBackgroundAlphas[i] + b * mNewBackgroundAlphas[i]); 1686 cl.setBackgroundAlphaMultiplier(a * mOldBackgroundAlphaMultipliers[i] + 1687 b * mNewBackgroundAlphaMultipliers[i]); 1688 cl.setFastAlpha(a * mOldAlphas[i] + b * mNewAlphas[i]); 1689 } 1690 } 1691 }); 1692 1693 ValueAnimator rotationAnim = 1694 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1695 rotationAnim.setInterpolator(new DecelerateInterpolator(2.0f)); 1696 rotationAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1697 public void onAnimationUpdate(float a, float b) { 1698 if (b == 0f) { 1699 // an optimization, but not required 1700 return; 1701 } 1702 for (int i = 0; i < getChildCount(); i++) { 1703 final CellLayout cl = (CellLayout) getChildAt(i); 1704 cl.setFastRotationY(a * mOldRotationYs[i] + b * mNewRotationYs[i]); 1705 } 1706 } 1707 }); 1708 1709 mAnimator.playTogether(animWithInterpolator, rotationAnim); 1710 mAnimator.setStartDelay(delay); 1711 // If we call this when we're not animated, onAnimationEnd is never called on 1712 // the listener; make sure we only use the listener when we're actually animating 1713 mAnimator.addListener(mChangeStateAnimationListener); 1714 mAnimator.start(); 1715 } 1716 1717 if (stateIsSpringLoaded) { 1718 // Right now we're covered by Apps Customize 1719 // Show the background gradient immediately, so the gradient will 1720 // be showing once AppsCustomize disappears 1721 animateBackgroundGradient(getResources().getInteger( 1722 R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, false); 1723 } else { 1724 // Fade the background gradient away 1725 animateBackgroundGradient(0f, true); 1726 } 1727 } 1728 1729 /** 1730 * Draw the View v into the given Canvas. 1731 * 1732 * @param v the view to draw 1733 * @param destCanvas the canvas to draw on 1734 * @param padding the horizontal and vertical padding to use when drawing 1735 */ 1736 private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { 1737 final Rect clipRect = mTempRect; 1738 v.getDrawingRect(clipRect); 1739 1740 boolean textVisible = false; 1741 1742 destCanvas.save(); 1743 if (v instanceof TextView && pruneToDrawable) { 1744 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1745 clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); 1746 destCanvas.translate(padding / 2, padding / 2); 1747 d.draw(destCanvas); 1748 } else { 1749 if (v instanceof FolderIcon) { 1750 // For FolderIcons the text can bleed into the icon area, and so we need to 1751 // hide the text completely (which can't be achieved by clipping). 1752 if (((FolderIcon) v).getTextVisible()) { 1753 ((FolderIcon) v).setTextVisible(false); 1754 textVisible = true; 1755 } 1756 } else if (v instanceof BubbleTextView) { 1757 final BubbleTextView tv = (BubbleTextView) v; 1758 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1759 tv.getLayout().getLineTop(0); 1760 } else if (v instanceof TextView) { 1761 final TextView tv = (TextView) v; 1762 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1763 tv.getLayout().getLineTop(0); 1764 } 1765 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1766 destCanvas.clipRect(clipRect, Op.REPLACE); 1767 v.draw(destCanvas); 1768 1769 // Restore text visibility of FolderIcon if necessary 1770 if (textVisible) { 1771 ((FolderIcon) v).setTextVisible(true); 1772 } 1773 } 1774 destCanvas.restore(); 1775 } 1776 1777 /** 1778 * Returns a new bitmap to show when the given View is being dragged around. 1779 * Responsibility for the bitmap is transferred to the caller. 1780 */ 1781 public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1782 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1783 Bitmap b; 1784 1785 if (v instanceof TextView) { 1786 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1787 b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, 1788 d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); 1789 } else { 1790 b = Bitmap.createBitmap( 1791 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1792 } 1793 1794 canvas.setBitmap(b); 1795 drawDragView(v, canvas, padding, true); 1796 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 1797 canvas.drawColor(mDragViewMultiplyColor, PorterDuff.Mode.MULTIPLY); 1798 canvas.setBitmap(null); 1799 1800 return b; 1801 } 1802 1803 /** 1804 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1805 * Responsibility for the bitmap is transferred to the caller. 1806 */ 1807 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1808 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1809 final Bitmap b = Bitmap.createBitmap( 1810 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1811 1812 canvas.setBitmap(b); 1813 drawDragView(v, canvas, padding, true); 1814 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1815 canvas.setBitmap(null); 1816 return b; 1817 } 1818 1819 /** 1820 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1821 * Responsibility for the bitmap is transferred to the caller. 1822 */ 1823 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h) { 1824 return createDragOutline(orig, canvas, padding, w, h, null); 1825 } 1826 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h, 1827 Paint alphaClipPaint) { 1828 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1829 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1830 canvas.setBitmap(b); 1831 1832 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 1833 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 1834 (h - padding) / (float) orig.getHeight()); 1835 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 1836 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 1837 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 1838 1839 // center the image 1840 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 1841 1842 Paint p = new Paint(); 1843 p.setFilterBitmap(true); 1844 canvas.drawBitmap(orig, src, dst, p); 1845 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor, 1846 alphaClipPaint); 1847 canvas.setBitmap(null); 1848 1849 return b; 1850 } 1851 1852 /** 1853 * Creates a drag outline to represent a drop (that we don't have the actual information for 1854 * yet). May be changed in the future to alter the drop outline slightly depending on the 1855 * clip description mime data. 1856 */ 1857 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 1858 Resources r = getResources(); 1859 final int outlineColor = r.getColor(android.R.color.holo_blue_light); 1860 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 1861 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 1862 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 1863 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 1864 final Bitmap b = Bitmap.createBitmap( 1865 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 1866 1867 canvas.setBitmap(b); 1868 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 1869 rectRadius, rectRadius, mExternalDragOutlinePaint); 1870 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1871 canvas.setBitmap(null); 1872 return b; 1873 } 1874 1875 void startDrag(CellLayout.CellInfo cellInfo) { 1876 View child = cellInfo.cell; 1877 1878 // Make sure the drag was started by a long press as opposed to a long click. 1879 if (!child.isInTouchMode()) { 1880 return; 1881 } 1882 1883 mDragInfo = cellInfo; 1884 child.setVisibility(GONE); 1885 1886 child.clearFocus(); 1887 child.setPressed(false); 1888 1889 final Canvas canvas = new Canvas(); 1890 1891 // We need to add extra padding to the bitmap to make room for the glow effect 1892 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1893 1894 // The outline is used to visualize where the item will land if dropped 1895 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 1896 beginDragShared(child, this); 1897 } 1898 1899 public void beginDragShared(View child, DragSource source) { 1900 Resources r = getResources(); 1901 1902 // We need to add extra padding to the bitmap to make room for the glow effect 1903 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1904 1905 // The drag bitmap follows the touch point around on the screen 1906 final Bitmap b = createDragBitmap(child, new Canvas(), bitmapPadding); 1907 1908 final int bmpWidth = b.getWidth(); 1909 1910 mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 1911 final int dragLayerX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 1912 int dragLayerY = mTempXY[1] - bitmapPadding / 2; 1913 1914 Point dragVisualizeOffset = null; 1915 Rect dragRect = null; 1916 if (child instanceof BubbleTextView || child instanceof PagedViewIcon) { 1917 int iconSize = r.getDimensionPixelSize(R.dimen.app_icon_size); 1918 int iconPaddingTop = r.getDimensionPixelSize(R.dimen.app_icon_padding_top); 1919 int top = child.getPaddingTop(); 1920 int left = (bmpWidth - iconSize) / 2; 1921 int right = left + iconSize; 1922 int bottom = top + iconSize; 1923 dragLayerY += top; 1924 // Note: The drag region is used to calculate drag layer offsets, but the 1925 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 1926 dragVisualizeOffset = new Point(-bitmapPadding / 2, iconPaddingTop - bitmapPadding / 2); 1927 dragRect = new Rect(left, top, right, bottom); 1928 } else if (child instanceof FolderIcon) { 1929 int previewSize = r.getDimensionPixelSize(R.dimen.folder_preview_size); 1930 dragRect = new Rect(0, 0, child.getWidth(), previewSize); 1931 } 1932 1933 // Clear the pressed state if necessary 1934 if (child instanceof BubbleTextView) { 1935 BubbleTextView icon = (BubbleTextView) child; 1936 icon.clearPressedOrFocusedBackground(); 1937 } 1938 1939 mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 1940 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect); 1941 b.recycle(); 1942 } 1943 1944 void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, int screen, 1945 int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { 1946 View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); 1947 1948 final int[] cellXY = new int[2]; 1949 target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1950 addInScreen(view, container, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1951 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, cellXY[0], 1952 cellXY[1]); 1953 } 1954 1955 public boolean transitionStateShouldAllowDrop() { 1956 return (!isSwitchingState() || mTransitionProgress > 0.5f); 1957 } 1958 1959 /** 1960 * {@inheritDoc} 1961 */ 1962 public boolean acceptDrop(DragObject d) { 1963 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1964 if (d.dragSource != this) { 1965 // Don't accept the drop if we're not over a screen at time of drop 1966 if (mDragTargetLayout == null) { 1967 return false; 1968 } 1969 if (!transitionStateShouldAllowDrop()) return false; 1970 1971 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 1972 d.dragView, mDragViewVisualCenter); 1973 1974 // We want the point to be mapped to the dragTarget. 1975 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 1976 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 1977 } else { 1978 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 1979 } 1980 1981 int spanX = 1; 1982 int spanY = 1; 1983 View ignoreView = null; 1984 if (mDragInfo != null) { 1985 final CellLayout.CellInfo dragCellInfo = mDragInfo; 1986 spanX = dragCellInfo.spanX; 1987 spanY = dragCellInfo.spanY; 1988 ignoreView = dragCellInfo.cell; 1989 } else { 1990 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 1991 spanX = dragInfo.spanX; 1992 spanY = dragInfo.spanY; 1993 } 1994 1995 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 1996 (int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell); 1997 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, true)) { 1998 return true; 1999 } 2000 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, 2001 mTargetCell)) { 2002 return true; 2003 } 2004 2005 2006 // Don't accept the drop if there's no room for the item 2007 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 2008 mLauncher.showOutOfSpaceMessage(); 2009 return false; 2010 } 2011 } 2012 return true; 2013 } 2014 2015 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, 2016 boolean considerTimeout) { 2017 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2018 2019 boolean hasntMoved = false; 2020 if (mDragInfo != null) { 2021 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2022 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2023 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2024 } 2025 2026 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2027 return false; 2028 } 2029 2030 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2031 boolean willBecomeShortcut = 2032 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2033 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2034 2035 return (aboveShortcut && willBecomeShortcut); 2036 } 2037 2038 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell) { 2039 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2040 if (dropOverView instanceof FolderIcon) { 2041 FolderIcon fi = (FolderIcon) dropOverView; 2042 if (fi.acceptDrop(dragInfo)) { 2043 return true; 2044 } 2045 } 2046 return false; 2047 } 2048 2049 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2050 int[] targetCell, boolean external, DragView dragView, Runnable postAnimationRunnable) { 2051 View v = target.getChildAt(targetCell[0], targetCell[1]); 2052 boolean hasntMoved = false; 2053 if (mDragInfo != null) { 2054 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2055 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2056 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2057 } 2058 2059 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2060 mCreateUserFolderOnDrop = false; 2061 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 2062 2063 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2064 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2065 2066 if (aboveShortcut && willBecomeShortcut) { 2067 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2068 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2069 // if the drag started here, we need to remove it from the workspace 2070 if (!external) { 2071 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2072 } 2073 2074 Rect folderLocation = new Rect(); 2075 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2076 target.removeView(v); 2077 2078 FolderIcon fi = 2079 mLauncher.addFolder(target, container, screen, targetCell[0], targetCell[1]); 2080 destInfo.cellX = -1; 2081 destInfo.cellY = -1; 2082 sourceInfo.cellX = -1; 2083 sourceInfo.cellY = -1; 2084 2085 // If the dragView is null, we can't animate 2086 boolean animate = dragView != null; 2087 if (animate) { 2088 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2089 postAnimationRunnable); 2090 } else { 2091 fi.addItem(destInfo); 2092 fi.addItem(sourceInfo); 2093 } 2094 return true; 2095 } 2096 return false; 2097 } 2098 2099 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2100 DragObject d, boolean external) { 2101 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2102 if (dropOverView instanceof FolderIcon) { 2103 FolderIcon fi = (FolderIcon) dropOverView; 2104 if (fi.acceptDrop(d.dragInfo)) { 2105 fi.onDrop(d); 2106 2107 // if the drag started here, we need to remove it from the workspace 2108 if (!external) { 2109 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2110 } 2111 return true; 2112 } 2113 } 2114 return false; 2115 } 2116 2117 public void onDrop(DragObject d) { 2118 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2119 mDragViewVisualCenter); 2120 2121 // We want the point to be mapped to the dragTarget. 2122 if (mDragTargetLayout != null) { 2123 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2124 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2125 } else { 2126 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2127 } 2128 } 2129 2130 CellLayout dropTargetLayout = mDragTargetLayout; 2131 2132 int snapScreen = -1; 2133 if (d.dragSource != this) { 2134 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2135 (int) mDragViewVisualCenter[1] }; 2136 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2137 } else if (mDragInfo != null) { 2138 final View cell = mDragInfo.cell; 2139 2140 if (dropTargetLayout != null) { 2141 // Move internally 2142 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2143 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2144 long container = hasMovedIntoHotseat ? 2145 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2146 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2147 int screen = (mTargetCell[0] < 0) ? 2148 mDragInfo.screen : indexOfChild(dropTargetLayout); 2149 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2150 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2151 // First we find the cell nearest to point at which the item is 2152 // dropped, without any consideration to whether there is an item there. 2153 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2154 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2155 // If the item being dropped is a shortcut and the nearest drop 2156 // cell also contains a shortcut, then create a folder with the two shortcuts. 2157 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2158 dropTargetLayout, mTargetCell, false, d.dragView, null)) { 2159 return; 2160 } 2161 2162 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, d, false)) { 2163 return; 2164 } 2165 2166 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2167 // we need to find the nearest cell location that is vacant 2168 mTargetCell = findNearestVacantArea((int) mDragViewVisualCenter[0], 2169 (int) mDragViewVisualCenter[1], mDragInfo.spanX, mDragInfo.spanY, cell, 2170 dropTargetLayout, mTargetCell); 2171 2172 if (mCurrentPage != screen && !hasMovedIntoHotseat) { 2173 snapScreen = screen; 2174 snapToPage(screen); 2175 } 2176 2177 if (mTargetCell[0] >= 0 && mTargetCell[1] >= 0) { 2178 if (hasMovedLayouts) { 2179 // Reparent the view 2180 getParentCellLayoutForView(cell).removeView(cell); 2181 addInScreen(cell, container, screen, mTargetCell[0], mTargetCell[1], 2182 mDragInfo.spanX, mDragInfo.spanY); 2183 } 2184 2185 // update the item's position after drop 2186 final ItemInfo info = (ItemInfo) cell.getTag(); 2187 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2188 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 2189 lp.cellX = mTargetCell[0]; 2190 lp.cellY = mTargetCell[1]; 2191 cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screen, 2192 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2193 2194 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2195 cell instanceof LauncherAppWidgetHostView) { 2196 final CellLayout cellLayout = dropTargetLayout; 2197 // We post this call so that the widget has a chance to be placed 2198 // in its final location 2199 2200 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2201 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2202 if (pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2203 final Runnable resizeRunnable = new Runnable() { 2204 public void run() { 2205 DragLayer dragLayer = mLauncher.getDragLayer(); 2206 dragLayer.addResizeFrame(info, hostView, cellLayout); 2207 } 2208 }; 2209 post(new Runnable() { 2210 public void run() { 2211 if (!isPageMoving()) { 2212 resizeRunnable.run(); 2213 } else { 2214 mDelayedResizeRunnable = resizeRunnable; 2215 } 2216 } 2217 }); 2218 } 2219 } 2220 2221 LauncherModel.moveItemInDatabase(mLauncher, info, container, screen, lp.cellX, 2222 lp.cellY); 2223 } 2224 } 2225 2226 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2227 2228 // Prepare it to be animated into its new position 2229 // This must be called after the view has been re-parented 2230 final Runnable disableHardwareLayersRunnable = new Runnable() { 2231 @Override 2232 public void run() { 2233 mAnimatingViewIntoPlace = false; 2234 updateChildrenLayersEnabled(); 2235 } 2236 }; 2237 mAnimatingViewIntoPlace = true; 2238 if (d.dragView.hasDrawn()) { 2239 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2240 setFinalScrollForPageChange(snapScreen); 2241 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2242 disableHardwareLayersRunnable); 2243 resetFinalScrollForPageChange(snapScreen); 2244 } else { 2245 cell.setVisibility(VISIBLE); 2246 } 2247 parent.onDropChild(cell); 2248 } 2249 } 2250 2251 public void setFinalScrollForPageChange(int screen) { 2252 if (screen >= 0) { 2253 mSavedScrollX = getScrollX(); 2254 CellLayout cl = (CellLayout) getChildAt(screen); 2255 mSavedTranslationX = cl.getTranslationX(); 2256 mSavedRotationY = cl.getRotationY(); 2257 final int newX = getChildOffset(screen) - getRelativeChildOffset(screen); 2258 setScrollX(newX); 2259 cl.setTranslationX(0f); 2260 cl.setRotationY(0f); 2261 } 2262 } 2263 2264 public void resetFinalScrollForPageChange(int screen) { 2265 if (screen >= 0) { 2266 CellLayout cl = (CellLayout) getChildAt(screen); 2267 setScrollX(mSavedScrollX); 2268 cl.setTranslationX(mSavedTranslationX); 2269 cl.setRotationY(mSavedRotationY); 2270 } 2271 } 2272 2273 public void getViewLocationRelativeToSelf(View v, int[] location) { 2274 getLocationInWindow(location); 2275 int x = location[0]; 2276 int y = location[1]; 2277 2278 v.getLocationInWindow(location); 2279 int vX = location[0]; 2280 int vY = location[1]; 2281 2282 location[0] = vX - x; 2283 location[1] = vY - y; 2284 } 2285 2286 public void onDragEnter(DragObject d) { 2287 if (mDragTargetLayout != null) { 2288 mDragTargetLayout.setIsDragOverlapping(false); 2289 mDragTargetLayout.onDragExit(); 2290 } 2291 mDragTargetLayout = getCurrentDropLayout(); 2292 mDragTargetLayout.setIsDragOverlapping(true); 2293 mDragTargetLayout.onDragEnter(); 2294 2295 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2296 // don't need to show the outlines 2297 if (LauncherApplication.isScreenLarge()) { 2298 showOutlines(); 2299 } 2300 } 2301 2302 private void doDragExit(DragObject d) { 2303 // Clean up folders 2304 cleanupFolderCreation(d); 2305 2306 // Reset the scroll area and previous drag target 2307 onResetScrollArea(); 2308 2309 if (mDragTargetLayout != null) { 2310 mDragTargetLayout.setIsDragOverlapping(false); 2311 mDragTargetLayout.onDragExit(); 2312 } 2313 mLastDragOverView = null; 2314 2315 if (!mIsPageMoving) { 2316 hideOutlines(); 2317 } 2318 } 2319 2320 public void onDragExit(DragObject d) { 2321 doDragExit(d); 2322 } 2323 2324 public DropTarget getDropTargetDelegate(DragObject d) { 2325 return null; 2326 } 2327 2328 /** 2329 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 2330 * in the returned structure related to the widgets that match the drop (or a null list if it is 2331 * a shortcut drop). If the drop is not accepted then a null structure is returned. 2332 */ 2333 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 2334 final LauncherModel model = mLauncher.getModel(); 2335 final ClipDescription desc = event.getClipDescription(); 2336 final int mimeTypeCount = desc.getMimeTypeCount(); 2337 for (int i = 0; i < mimeTypeCount; ++i) { 2338 final String mimeType = desc.getMimeType(i); 2339 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 2340 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 2341 } else { 2342 final List<WidgetMimeTypeHandlerData> widgets = 2343 model.resolveWidgetsForMimeType(mContext, mimeType); 2344 if (widgets.size() > 0) { 2345 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 2346 } 2347 } 2348 } 2349 return null; 2350 } 2351 2352 /** 2353 * Global drag and drop handler 2354 */ 2355 @Override 2356 public boolean onDragEvent(DragEvent event) { 2357 final ClipDescription desc = event.getClipDescription(); 2358 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 2359 final int[] pos = new int[2]; 2360 layout.getLocationOnScreen(pos); 2361 // We need to offset the drag coordinates to layout coordinate space 2362 final int x = (int) event.getX() - pos[0]; 2363 final int y = (int) event.getY() - pos[1]; 2364 2365 switch (event.getAction()) { 2366 case DragEvent.ACTION_DRAG_STARTED: { 2367 // Validate this drag 2368 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2369 if (test != null) { 2370 boolean isShortcut = (test.second == null); 2371 if (isShortcut) { 2372 // Check if we have enough space on this screen to add a new shortcut 2373 if (!layout.findCellForSpan(pos, 1, 1)) { 2374 mLauncher.showOutOfSpaceMessage(); 2375 return false; 2376 } 2377 } 2378 } else { 2379 // Show error message if we couldn't accept any of the items 2380 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 2381 Toast.LENGTH_SHORT).show(); 2382 return false; 2383 } 2384 2385 // Create the drag outline 2386 // We need to add extra padding to the bitmap to make room for the glow effect 2387 final Canvas canvas = new Canvas(); 2388 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2389 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 2390 2391 // Show the current page outlines to indicate that we can accept this drop 2392 showOutlines(); 2393 layout.setIsDragOccuring(true); 2394 layout.onDragEnter(); 2395 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1, null, null); 2396 2397 return true; 2398 } 2399 case DragEvent.ACTION_DRAG_LOCATION: 2400 // Visualize the drop location 2401 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1, null, null); 2402 return true; 2403 case DragEvent.ACTION_DROP: { 2404 // Try and add any shortcuts 2405 final LauncherModel model = mLauncher.getModel(); 2406 final ClipData data = event.getClipData(); 2407 2408 // We assume that the mime types are ordered in descending importance of 2409 // representation. So we enumerate the list of mime types and alert the 2410 // user if any widgets can handle the drop. Only the most preferred 2411 // representation will be handled. 2412 pos[0] = x; 2413 pos[1] = y; 2414 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2415 if (test != null) { 2416 final int index = test.first; 2417 final List<WidgetMimeTypeHandlerData> widgets = test.second; 2418 final boolean isShortcut = (widgets == null); 2419 final String mimeType = desc.getMimeType(index); 2420 if (isShortcut) { 2421 final Intent intent = data.getItemAt(index).getIntent(); 2422 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 2423 onDropExternal(new int[] { x, y }, info, layout, false); 2424 } else { 2425 if (widgets.size() == 1) { 2426 // If there is only one item, then go ahead and add and configure 2427 // that widget 2428 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 2429 final PendingAddWidgetInfo createInfo = 2430 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 2431 mLauncher.addAppWidgetFromDrop(createInfo, 2432 LauncherSettings.Favorites.CONTAINER_DESKTOP, mCurrentPage, null, pos); 2433 } else { 2434 // Show the widget picker dialog if there is more than one widget 2435 // that can handle this data type 2436 final InstallWidgetReceiver.WidgetListAdapter adapter = 2437 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 2438 data, widgets, layout, mCurrentPage, pos); 2439 final AlertDialog.Builder builder = 2440 new AlertDialog.Builder(mContext); 2441 builder.setAdapter(adapter, adapter); 2442 builder.setCancelable(true); 2443 builder.setTitle(mContext.getString( 2444 R.string.external_drop_widget_pick_title)); 2445 builder.setIcon(R.drawable.ic_no_applications); 2446 builder.show(); 2447 } 2448 } 2449 } 2450 return true; 2451 } 2452 case DragEvent.ACTION_DRAG_ENDED: 2453 // Hide the page outlines after the drop 2454 layout.setIsDragOccuring(false); 2455 layout.onDragExit(); 2456 hideOutlines(); 2457 return true; 2458 } 2459 return super.onDragEvent(event); 2460 } 2461 2462 /* 2463 * 2464 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2465 * coordinate space. The argument xy is modified with the return result. 2466 * 2467 */ 2468 void mapPointFromSelfToChild(View v, float[] xy) { 2469 mapPointFromSelfToChild(v, xy, null); 2470 } 2471 2472 /* 2473 * 2474 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2475 * coordinate space. The argument xy is modified with the return result. 2476 * 2477 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2478 * computing it itself; we use this to avoid redundant matrix inversions in 2479 * findMatchingPageForDragOver 2480 * 2481 */ 2482 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2483 if (cachedInverseMatrix == null) { 2484 v.getMatrix().invert(mTempInverseMatrix); 2485 cachedInverseMatrix = mTempInverseMatrix; 2486 } 2487 xy[0] = xy[0] + mScrollX - v.getLeft(); 2488 xy[1] = xy[1] + mScrollY - v.getTop(); 2489 cachedInverseMatrix.mapPoints(xy); 2490 } 2491 2492 /* 2493 * Maps a point from the Workspace's coordinate system to another sibling view's. (Workspace 2494 * covers the full screen) 2495 */ 2496 void mapPointFromSelfToSibling(View v, float[] xy) { 2497 xy[0] = xy[0] - v.getLeft(); 2498 xy[1] = xy[1] - v.getTop(); 2499 } 2500 2501 /* 2502 * 2503 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2504 * the parent View's coordinate space. The argument xy is modified with the return result. 2505 * 2506 */ 2507 void mapPointFromChildToSelf(View v, float[] xy) { 2508 v.getMatrix().mapPoints(xy); 2509 xy[0] -= (mScrollX - v.getLeft()); 2510 xy[1] -= (mScrollY - v.getTop()); 2511 } 2512 2513 static private float squaredDistance(float[] point1, float[] point2) { 2514 float distanceX = point1[0] - point2[0]; 2515 float distanceY = point2[1] - point2[1]; 2516 return distanceX * distanceX + distanceY * distanceY; 2517 } 2518 2519 /* 2520 * 2521 * Returns true if the passed CellLayout cl overlaps with dragView 2522 * 2523 */ 2524 boolean overlaps(CellLayout cl, DragView dragView, 2525 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2526 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2527 final float[] draggedItemTopLeft = mTempDragCoordinates; 2528 draggedItemTopLeft[0] = dragViewX; 2529 draggedItemTopLeft[1] = dragViewY; 2530 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2531 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2532 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2533 2534 // Transform the dragged item's top left coordinates 2535 // to the CellLayout's local coordinates 2536 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2537 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2538 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2539 2540 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2541 // Transform the dragged item's bottom right coordinates 2542 // to the CellLayout's local coordinates 2543 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2544 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2545 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2546 2547 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2548 float overlap = (overlapRegionRight - overlapRegionLeft) * 2549 (overlapRegionBottom - overlapRegionTop); 2550 if (overlap > 0) { 2551 return true; 2552 } 2553 } 2554 } 2555 return false; 2556 } 2557 2558 /* 2559 * 2560 * This method returns the CellLayout that is currently being dragged to. In order to drag 2561 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2562 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2563 * 2564 * Return null if no CellLayout is currently being dragged over 2565 * 2566 */ 2567 private CellLayout findMatchingPageForDragOver( 2568 DragView dragView, float originX, float originY, boolean exact) { 2569 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2570 // with the item being dragged and then choose the one that's closest to the touch point 2571 final int screenCount = getChildCount(); 2572 CellLayout bestMatchingScreen = null; 2573 float smallestDistSoFar = Float.MAX_VALUE; 2574 2575 for (int i = 0; i < screenCount; i++) { 2576 CellLayout cl = (CellLayout) getChildAt(i); 2577 2578 final float[] touchXy = {originX, originY}; 2579 // Transform the touch coordinates to the CellLayout's local coordinates 2580 // If the touch point is within the bounds of the cell layout, we can return immediately 2581 cl.getMatrix().invert(mTempInverseMatrix); 2582 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2583 2584 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2585 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2586 return cl; 2587 } 2588 2589 if (!exact && overlaps(cl, dragView, (int) originX, (int) originY, mTempInverseMatrix)) { 2590 // Get the center of the cell layout in screen coordinates 2591 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2592 cellLayoutCenter[0] = cl.getWidth()/2; 2593 cellLayoutCenter[1] = cl.getHeight()/2; 2594 mapPointFromChildToSelf(cl, cellLayoutCenter); 2595 2596 touchXy[0] = originX; 2597 touchXy[1] = originY; 2598 2599 // Calculate the distance between the center of the CellLayout 2600 // and the touch point 2601 float dist = squaredDistance(touchXy, cellLayoutCenter); 2602 2603 if (dist < smallestDistSoFar) { 2604 smallestDistSoFar = dist; 2605 bestMatchingScreen = cl; 2606 } 2607 } 2608 } 2609 return bestMatchingScreen; 2610 } 2611 2612 // This is used to compute the visual center of the dragView. This point is then 2613 // used to visualize drop locations and determine where to drop an item. The idea is that 2614 // the visual center represents the user's interpretation of where the item is, and hence 2615 // is the appropriate point to use when determining drop location. 2616 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2617 DragView dragView, float[] recycle) { 2618 float res[]; 2619 if (recycle == null) { 2620 res = new float[2]; 2621 } else { 2622 res = recycle; 2623 } 2624 2625 // First off, the drag view has been shifted in a way that is not represented in the 2626 // x and y values or the x/yOffsets. Here we account for that shift. 2627 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2628 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2629 2630 // These represent the visual top and left of drag view if a dragRect was provided. 2631 // If a dragRect was not provided, then they correspond to the actual view left and 2632 // top, as the dragRect is in that case taken to be the entire dragView. 2633 // R.dimen.dragViewOffsetY. 2634 int left = x - xOffset; 2635 int top = y - yOffset; 2636 2637 // In order to find the visual center, we shift by half the dragRect 2638 res[0] = left + dragView.getDragRegion().width() / 2; 2639 res[1] = top + dragView.getDragRegion().height() / 2; 2640 2641 return res; 2642 } 2643 2644 private boolean isDragWidget(DragObject d) { 2645 return (d.dragInfo instanceof LauncherAppWidgetInfo || 2646 d.dragInfo instanceof PendingAddWidgetInfo); 2647 } 2648 private boolean isExternalDragWidget(DragObject d) { 2649 return d.dragSource != this && isDragWidget(d); 2650 } 2651 2652 public void onDragOver(DragObject d) { 2653 // Skip drag over events while we are dragging over side pages 2654 if (mInScrollArea) return; 2655 if (mIsSwitchingState) return; 2656 2657 Rect r = new Rect(); 2658 CellLayout layout = null; 2659 ItemInfo item = (ItemInfo) d.dragInfo; 2660 2661 // Ensure that we have proper spans for the item that we are dropping 2662 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2663 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2664 d.dragView, mDragViewVisualCenter); 2665 2666 // Identify whether we have dragged over a side page 2667 if (isSmall()) { 2668 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 2669 mLauncher.getHotseat().getHitRect(r); 2670 if (r.contains(d.x, d.y)) { 2671 layout = mLauncher.getHotseat().getLayout(); 2672 } 2673 } 2674 if (layout == null) { 2675 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, true); 2676 } 2677 if (layout != mDragTargetLayout) { 2678 // Cancel all intermediate folder states 2679 cleanupFolderCreation(d); 2680 2681 if (mDragTargetLayout != null) { 2682 mDragTargetLayout.setIsDragOverlapping(false); 2683 mDragTargetLayout.onDragExit(); 2684 } 2685 mDragTargetLayout = layout; 2686 if (mDragTargetLayout != null) { 2687 mDragTargetLayout.setIsDragOverlapping(true); 2688 mDragTargetLayout.onDragEnter(); 2689 } else { 2690 mLastDragOverView = null; 2691 } 2692 2693 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 2694 if (isInSpringLoadedMode) { 2695 if (mLauncher.isHotseatLayout(layout)) { 2696 mSpringLoadedDragController.cancel(); 2697 } else { 2698 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2699 } 2700 } 2701 } 2702 } else { 2703 // Test to see if we are over the hotseat otherwise just use the current page 2704 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 2705 mLauncher.getHotseat().getHitRect(r); 2706 if (r.contains(d.x, d.y)) { 2707 layout = mLauncher.getHotseat().getLayout(); 2708 } 2709 } 2710 if (layout == null) { 2711 layout = getCurrentDropLayout(); 2712 } 2713 if (layout != mDragTargetLayout) { 2714 if (mDragTargetLayout != null) { 2715 mDragTargetLayout.setIsDragOverlapping(false); 2716 mDragTargetLayout.onDragExit(); 2717 } 2718 mDragTargetLayout = layout; 2719 mDragTargetLayout.setIsDragOverlapping(true); 2720 mDragTargetLayout.onDragEnter(); 2721 } 2722 } 2723 2724 // Handle the drag over 2725 if (mDragTargetLayout != null) { 2726 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2727 2728 // We want the point to be mapped to the dragTarget. 2729 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2730 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2731 } else { 2732 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2733 } 2734 ItemInfo info = (ItemInfo) d.dragInfo; 2735 2736 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2737 (int) mDragViewVisualCenter[1], 1, 1, mDragTargetLayout, mTargetCell); 2738 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2739 mTargetCell[1]); 2740 2741 boolean userFolderPending = willCreateUserFolder(info, mDragTargetLayout, 2742 mTargetCell, false); 2743 boolean isOverFolder = dragOverView instanceof FolderIcon; 2744 if (dragOverView != mLastDragOverView) { 2745 cancelFolderCreation(); 2746 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2747 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2748 } 2749 } 2750 2751 if (userFolderPending && dragOverView != mLastDragOverView) { 2752 mFolderCreationAlarm.setOnAlarmListener(new 2753 FolderCreationAlarmListener(mDragTargetLayout, mTargetCell[0], mTargetCell[1])); 2754 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2755 } 2756 2757 if (dragOverView != mLastDragOverView && isOverFolder) { 2758 ((FolderIcon) dragOverView).onDragEnter(d.dragInfo); 2759 if (mDragTargetLayout != null) { 2760 mDragTargetLayout.clearDragOutlines(); 2761 } 2762 } 2763 mLastDragOverView = dragOverView; 2764 2765 if (!mCreateUserFolderOnDrop && !isOverFolder) { 2766 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2767 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2768 item.spanX, item.spanY, d.dragView.getDragVisualizeOffset(), 2769 d.dragView.getDragRegion()); 2770 } 2771 } 2772 } 2773 2774 private void cleanupFolderCreation(DragObject d) { 2775 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2776 mDragFolderRingAnimator.animateToNaturalState(); 2777 } 2778 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2779 if (d != null) { 2780 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2781 } 2782 } 2783 mFolderCreationAlarm.cancelAlarm(); 2784 } 2785 2786 private void cancelFolderCreation() { 2787 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2788 mDragFolderRingAnimator.animateToNaturalState(); 2789 } 2790 mCreateUserFolderOnDrop = false; 2791 mFolderCreationAlarm.cancelAlarm(); 2792 } 2793 2794 class FolderCreationAlarmListener implements OnAlarmListener { 2795 CellLayout layout; 2796 int cellX; 2797 int cellY; 2798 2799 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 2800 this.layout = layout; 2801 this.cellX = cellX; 2802 this.cellY = cellY; 2803 } 2804 2805 public void onAlarm(Alarm alarm) { 2806 if (mDragFolderRingAnimator == null) { 2807 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 2808 } 2809 mDragFolderRingAnimator.setCell(cellX, cellY); 2810 mDragFolderRingAnimator.setCellLayout(layout); 2811 mDragFolderRingAnimator.animateToAcceptState(); 2812 layout.showFolderAccept(mDragFolderRingAnimator); 2813 layout.clearDragOutlines(); 2814 mCreateUserFolderOnDrop = true; 2815 } 2816 } 2817 2818 @Override 2819 public void getHitRect(Rect outRect) { 2820 // We want the workspace to have the whole area of the display (it will find the correct 2821 // cell layout to drop to in the existing drag/drop logic. 2822 outRect.set(0, 0, mDisplayWidth, mDisplayHeight); 2823 } 2824 2825 /** 2826 * Add the item specified by dragInfo to the given layout. 2827 * @return true if successful 2828 */ 2829 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2830 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2831 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2832 return true; 2833 } 2834 mLauncher.showOutOfSpaceMessage(); 2835 return false; 2836 } 2837 2838 private void onDropExternal(int[] touchXY, Object dragInfo, 2839 CellLayout cellLayout, boolean insertAtFirst) { 2840 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 2841 } 2842 2843 /** 2844 * Drop an item that didn't originate on one of the workspace screens. 2845 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2846 * come from another app altogether. 2847 * 2848 * NOTE: This can also be called when we are outside of a drag event, when we want 2849 * to add an item to one of the workspace screens. 2850 */ 2851 private void onDropExternal(final int[] touchXY, final Object dragInfo, 2852 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 2853 final Runnable exitSpringLoadedRunnable = new Runnable() { 2854 @Override 2855 public void run() { 2856 mLauncher.exitSpringLoadedDragModeDelayed(true, false); 2857 } 2858 }; 2859 2860 ItemInfo info = (ItemInfo) dragInfo; 2861 int spanX = info.spanX; 2862 int spanY = info.spanY; 2863 if (mDragInfo != null) { 2864 spanX = mDragInfo.spanX; 2865 spanY = mDragInfo.spanY; 2866 } 2867 2868 final long container = mLauncher.isHotseatLayout(cellLayout) ? 2869 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2870 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2871 final int screen = indexOfChild(cellLayout); 2872 if (!mLauncher.isHotseatLayout(cellLayout) && screen != mCurrentPage 2873 && mState != State.SPRING_LOADED) { 2874 snapToPage(screen); 2875 } 2876 2877 if (info instanceof PendingAddItemInfo) { 2878 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 2879 2880 boolean findNearestVacantCell = true; 2881 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 2882 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 2883 cellLayout, mTargetCell); 2884 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, 2885 true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 2886 mDragTargetLayout, mTargetCell)) { 2887 findNearestVacantCell = false; 2888 } 2889 } 2890 if (findNearestVacantCell) { 2891 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], spanX, spanY, null, 2892 cellLayout, mTargetCell); 2893 } 2894 2895 Runnable onAnimationCompleteRunnable = new Runnable() { 2896 @Override 2897 public void run() { 2898 // When dragging and dropping from customization tray, we deal with creating 2899 // widgets/shortcuts/folders in a slightly different way 2900 switch (pendingInfo.itemType) { 2901 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 2902 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, 2903 container, screen, mTargetCell, null); 2904 break; 2905 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2906 mLauncher.processShortcutFromDrop(pendingInfo.componentName, 2907 container, screen, mTargetCell, null); 2908 break; 2909 default: 2910 throw new IllegalStateException("Unknown item type: " + 2911 pendingInfo.itemType); 2912 } 2913 cellLayout.onDragExit(); 2914 } 2915 }; 2916 2917 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 2918 // location and size on the home screen. 2919 int loc[] = new int[2]; 2920 cellLayout.cellToPoint(mTargetCell[0], mTargetCell[1], loc); 2921 2922 RectF r = new RectF(); 2923 cellLayout.cellToRect(mTargetCell[0], mTargetCell[1], spanX, spanY, r); 2924 setFinalTransitionTransform(cellLayout); 2925 float cellLayoutScale = 2926 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(cellLayout, loc); 2927 resetTransitionTransform(cellLayout); 2928 2929 float dragViewScale = r.width() / d.dragView.getMeasuredWidth(); 2930 // The animation will scale the dragView about its center, so we need to center about 2931 // the final location. 2932 loc[0] -= (d.dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 2933 loc[1] -= (d.dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 2934 2935 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, loc, 2936 dragViewScale * cellLayoutScale, onAnimationCompleteRunnable); 2937 } else { 2938 // This is for other drag/drop cases, like dragging from All Apps 2939 View view = null; 2940 2941 switch (info.itemType) { 2942 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 2943 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2944 if (info.container == NO_ID && info instanceof ApplicationInfo) { 2945 // Came from all apps -- make a copy 2946 info = new ShortcutInfo((ApplicationInfo) info); 2947 } 2948 view = mLauncher.createShortcut(R.layout.application, cellLayout, 2949 (ShortcutInfo) info); 2950 break; 2951 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 2952 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 2953 (FolderInfo) info, mIconCache); 2954 break; 2955 default: 2956 throw new IllegalStateException("Unknown item type: " + info.itemType); 2957 } 2958 2959 // First we find the cell nearest to point at which the item is 2960 // dropped, without any consideration to whether there is an item there. 2961 if (touchXY != null) { 2962 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 2963 cellLayout, mTargetCell); 2964 d.postAnimationRunnable = exitSpringLoadedRunnable; 2965 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, true, 2966 d.dragView, d.postAnimationRunnable)) { 2967 return; 2968 } 2969 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, d, true)) { 2970 return; 2971 } 2972 } 2973 2974 if (touchXY != null) { 2975 // when dragging and dropping, just find the closest free spot 2976 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], 1, 1, null, 2977 cellLayout, mTargetCell); 2978 } else { 2979 cellLayout.findCellForSpan(mTargetCell, 1, 1); 2980 } 2981 addInScreen(view, container, screen, mTargetCell[0], mTargetCell[1], info.spanX, 2982 info.spanY, insertAtFirst); 2983 cellLayout.onDropChild(view); 2984 cellLayout.animateDrop(); 2985 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2986 cellLayout.getChildrenLayout().measureChild(view); 2987 2988 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, 2989 lp.cellX, lp.cellY); 2990 2991 if (d.dragView != null) { 2992 // We wrap the animation call in the temporary set and reset of the current 2993 // cellLayout to its final transform -- this means we animate the drag view to 2994 // the correct final location. 2995 setFinalTransitionTransform(cellLayout); 2996 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 2997 exitSpringLoadedRunnable); 2998 resetTransitionTransform(cellLayout); 2999 } 3000 } 3001 } 3002 3003 public void setFinalTransitionTransform(CellLayout layout) { 3004 if (isSwitchingState()) { 3005 int index = indexOfChild(layout); 3006 mCurrentScaleX = layout.getScaleX(); 3007 mCurrentScaleY = layout.getScaleY(); 3008 mCurrentTranslationX = layout.getTranslationX(); 3009 mCurrentTranslationY = layout.getTranslationY(); 3010 mCurrentRotationY = layout.getRotationY(); 3011 layout.setScaleX(mNewScaleXs[index]); 3012 layout.setScaleY(mNewScaleYs[index]); 3013 layout.setTranslationX(mNewTranslationXs[index]); 3014 layout.setTranslationY(mNewTranslationYs[index]); 3015 layout.setRotationY(mNewRotationYs[index]); 3016 } 3017 } 3018 public void resetTransitionTransform(CellLayout layout) { 3019 if (isSwitchingState()) { 3020 mCurrentScaleX = layout.getScaleX(); 3021 mCurrentScaleY = layout.getScaleY(); 3022 mCurrentTranslationX = layout.getTranslationX(); 3023 mCurrentTranslationY = layout.getTranslationY(); 3024 mCurrentRotationY = layout.getRotationY(); 3025 layout.setScaleX(mCurrentScaleX); 3026 layout.setScaleY(mCurrentScaleY); 3027 layout.setTranslationX(mCurrentTranslationX); 3028 layout.setTranslationY(mCurrentTranslationY); 3029 layout.setRotationY(mCurrentRotationY); 3030 } 3031 } 3032 3033 /** 3034 * Return the current {@link CellLayout}, correctly picking the destination 3035 * screen while a scroll is in progress. 3036 */ 3037 public CellLayout getCurrentDropLayout() { 3038 return (CellLayout) getChildAt(mNextPage == INVALID_PAGE ? mCurrentPage : mNextPage); 3039 } 3040 3041 /** 3042 * Return the current CellInfo describing our current drag; this method exists 3043 * so that Launcher can sync this object with the correct info when the activity is created/ 3044 * destroyed 3045 * 3046 */ 3047 public CellLayout.CellInfo getDragInfo() { 3048 return mDragInfo; 3049 } 3050 3051 /** 3052 * Calculate the nearest cell where the given object would be dropped. 3053 * 3054 * pixelX and pixelY should be in the coordinate system of layout 3055 */ 3056 private int[] findNearestVacantArea(int pixelX, int pixelY, 3057 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 3058 return layout.findNearestVacantArea( 3059 pixelX, pixelY, spanX, spanY, ignoreView, recycle); 3060 } 3061 3062 /** 3063 * Calculate the nearest cell where the given object would be dropped. 3064 * 3065 * pixelX and pixelY should be in the coordinate system of layout 3066 */ 3067 private int[] findNearestArea(int pixelX, int pixelY, 3068 int spanX, int spanY, CellLayout layout, int[] recycle) { 3069 return layout.findNearestArea( 3070 pixelX, pixelY, spanX, spanY, recycle); 3071 } 3072 3073 void setup(DragController dragController) { 3074 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3075 mDragController = dragController; 3076 3077 // hardware layers on children are enabled on startup, but should be disabled until 3078 // needed 3079 updateChildrenLayersEnabled(); 3080 setWallpaperDimension(); 3081 } 3082 3083 /** 3084 * Called at the end of a drag which originated on the workspace. 3085 */ 3086 public void onDropCompleted(View target, DragObject d, boolean success) { 3087 if (success) { 3088 if (target != this) { 3089 if (mDragInfo != null) { 3090 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 3091 if (mDragInfo.cell instanceof DropTarget) { 3092 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 3093 } 3094 } 3095 } 3096 } else if (mDragInfo != null) { 3097 // NOTE: When 'success' is true, onDragExit is called by the DragController before 3098 // calling onDropCompleted(). We call it ourselves here, but maybe this should be 3099 // moved into DragController.cancelDrag(). 3100 doDragExit(null); 3101 CellLayout cellLayout; 3102 if (mLauncher.isHotseatLayout(target)) { 3103 cellLayout = mLauncher.getHotseat().getLayout(); 3104 } else { 3105 cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3106 } 3107 cellLayout.onDropChild(mDragInfo.cell); 3108 } 3109 if (d.cancelled && mDragInfo.cell != null) { 3110 mDragInfo.cell.setVisibility(VISIBLE); 3111 } 3112 mDragOutline = null; 3113 mDragInfo = null; 3114 } 3115 3116 public boolean isDropEnabled() { 3117 return true; 3118 } 3119 3120 @Override 3121 protected void onRestoreInstanceState(Parcelable state) { 3122 super.onRestoreInstanceState(state); 3123 Launcher.setScreen(mCurrentPage); 3124 } 3125 3126 @Override 3127 public void scrollLeft() { 3128 if (!isSmall() && !mIsSwitchingState) { 3129 super.scrollLeft(); 3130 } 3131 Folder openFolder = getOpenFolder(); 3132 if (openFolder != null) { 3133 openFolder.completeDragExit(); 3134 } 3135 } 3136 3137 @Override 3138 public void scrollRight() { 3139 if (!isSmall() && !mIsSwitchingState) { 3140 super.scrollRight(); 3141 } 3142 Folder openFolder = getOpenFolder(); 3143 if (openFolder != null) { 3144 openFolder.completeDragExit(); 3145 } 3146 } 3147 3148 @Override 3149 public boolean onEnterScrollArea(int x, int y, int direction) { 3150 // Ignore the scroll area if we are dragging over the hot seat 3151 if (mLauncher.getHotseat() != null) { 3152 Rect r = new Rect(); 3153 mLauncher.getHotseat().getHitRect(r); 3154 if (r.contains(x, y)) { 3155 return false; 3156 } 3157 } 3158 3159 boolean result = false; 3160 if (!isSmall() && !mIsSwitchingState) { 3161 mInScrollArea = true; 3162 3163 final int page = mCurrentPage + (direction == DragController.SCROLL_LEFT ? -1 : 1); 3164 final CellLayout layout = (CellLayout) getChildAt(page); 3165 cancelFolderCreation(); 3166 3167 if (layout != null) { 3168 // Exit the current layout and mark the overlapping layout 3169 if (mDragTargetLayout != null) { 3170 mDragTargetLayout.setIsDragOverlapping(false); 3171 mDragTargetLayout.onDragExit(); 3172 } 3173 mDragTargetLayout = layout; 3174 mDragTargetLayout.setIsDragOverlapping(true); 3175 3176 // Workspace is responsible for drawing the edge glow on adjacent pages, 3177 // so we need to redraw the workspace when this may have changed. 3178 invalidate(); 3179 result = true; 3180 } 3181 } 3182 return result; 3183 } 3184 3185 @Override 3186 public boolean onExitScrollArea() { 3187 boolean result = false; 3188 if (mInScrollArea) { 3189 if (mDragTargetLayout != null) { 3190 // Unmark the overlapping layout and re-enter the current layout 3191 mDragTargetLayout.setIsDragOverlapping(false); 3192 mDragTargetLayout = getCurrentDropLayout(); 3193 mDragTargetLayout.onDragEnter(); 3194 3195 // Workspace is responsible for drawing the edge glow on adjacent pages, 3196 // so we need to redraw the workspace when this may have changed. 3197 invalidate(); 3198 result = true; 3199 } 3200 mInScrollArea = false; 3201 } 3202 return result; 3203 } 3204 3205 private void onResetScrollArea() { 3206 if (mDragTargetLayout != null) { 3207 // Unmark the overlapping layout 3208 mDragTargetLayout.setIsDragOverlapping(false); 3209 3210 // Workspace is responsible for drawing the edge glow on adjacent pages, 3211 // so we need to redraw the workspace when this may have changed. 3212 invalidate(); 3213 } 3214 mInScrollArea = false; 3215 } 3216 3217 /** 3218 * Returns a specific CellLayout 3219 */ 3220 CellLayout getParentCellLayoutForView(View v) { 3221 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3222 for (CellLayout layout : layouts) { 3223 if (layout.getChildrenLayout().indexOfChild(v) > -1) { 3224 return layout; 3225 } 3226 } 3227 return null; 3228 } 3229 3230 /** 3231 * Returns a list of all the CellLayouts in the workspace. 3232 */ 3233 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3234 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3235 int screenCount = getChildCount(); 3236 for (int screen = 0; screen < screenCount; screen++) { 3237 layouts.add(((CellLayout) getChildAt(screen))); 3238 } 3239 if (mLauncher.getHotseat() != null) { 3240 layouts.add(mLauncher.getHotseat().getLayout()); 3241 } 3242 return layouts; 3243 } 3244 3245 /** 3246 * We should only use this to search for specific children. Do not use this method to modify 3247 * CellLayoutChildren directly. 3248 */ 3249 ArrayList<CellLayoutChildren> getWorkspaceAndHotseatCellLayoutChildren() { 3250 ArrayList<CellLayoutChildren> childrenLayouts = new ArrayList<CellLayoutChildren>(); 3251 int screenCount = getChildCount(); 3252 for (int screen = 0; screen < screenCount; screen++) { 3253 childrenLayouts.add(((CellLayout) getChildAt(screen)).getChildrenLayout()); 3254 } 3255 if (mLauncher.getHotseat() != null) { 3256 childrenLayouts.add(mLauncher.getHotseat().getLayout().getChildrenLayout()); 3257 } 3258 return childrenLayouts; 3259 } 3260 3261 public Folder getFolderForTag(Object tag) { 3262 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3263 for (CellLayoutChildren layout: childrenLayouts) { 3264 int count = layout.getChildCount(); 3265 for (int i = 0; i < count; i++) { 3266 View child = layout.getChildAt(i); 3267 if (child instanceof Folder) { 3268 Folder f = (Folder) child; 3269 if (f.getInfo() == tag && f.getInfo().opened) { 3270 return f; 3271 } 3272 } 3273 } 3274 } 3275 return null; 3276 } 3277 3278 public View getViewForTag(Object tag) { 3279 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3280 for (CellLayoutChildren layout: childrenLayouts) { 3281 int count = layout.getChildCount(); 3282 for (int i = 0; i < count; i++) { 3283 View child = layout.getChildAt(i); 3284 if (child.getTag() == tag) { 3285 return child; 3286 } 3287 } 3288 } 3289 return null; 3290 } 3291 3292 void clearDropTargets() { 3293 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3294 for (CellLayoutChildren layout: childrenLayouts) { 3295 int childCount = layout.getChildCount(); 3296 for (int j = 0; j < childCount; j++) { 3297 View v = layout.getChildAt(j); 3298 if (v instanceof DropTarget) { 3299 mDragController.removeDropTarget((DropTarget) v); 3300 } 3301 } 3302 } 3303 } 3304 3305 void removeItems(final ArrayList<ApplicationInfo> apps) { 3306 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3307 3308 final HashSet<String> packageNames = new HashSet<String>(); 3309 final int appCount = apps.size(); 3310 for (int i = 0; i < appCount; i++) { 3311 packageNames.add(apps.get(i).componentName.getPackageName()); 3312 } 3313 3314 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3315 for (final CellLayout layoutParent: cellLayouts) { 3316 final ViewGroup layout = layoutParent.getChildrenLayout(); 3317 3318 // Avoid ANRs by treating each screen separately 3319 post(new Runnable() { 3320 public void run() { 3321 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3322 childrenToRemove.clear(); 3323 3324 int childCount = layout.getChildCount(); 3325 for (int j = 0; j < childCount; j++) { 3326 final View view = layout.getChildAt(j); 3327 Object tag = view.getTag(); 3328 3329 if (tag instanceof ShortcutInfo) { 3330 final ShortcutInfo info = (ShortcutInfo) tag; 3331 final Intent intent = info.intent; 3332 final ComponentName name = intent.getComponent(); 3333 3334 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3335 for (String packageName: packageNames) { 3336 if (packageName.equals(name.getPackageName())) { 3337 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3338 childrenToRemove.add(view); 3339 } 3340 } 3341 } 3342 } else if (tag instanceof FolderInfo) { 3343 final FolderInfo info = (FolderInfo) tag; 3344 final ArrayList<ShortcutInfo> contents = info.contents; 3345 final int contentsCount = contents.size(); 3346 final ArrayList<ShortcutInfo> appsToRemoveFromFolder = 3347 new ArrayList<ShortcutInfo>(); 3348 3349 for (int k = 0; k < contentsCount; k++) { 3350 final ShortcutInfo appInfo = contents.get(k); 3351 final Intent intent = appInfo.intent; 3352 final ComponentName name = intent.getComponent(); 3353 3354 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3355 for (String packageName: packageNames) { 3356 if (packageName.equals(name.getPackageName())) { 3357 appsToRemoveFromFolder.add(appInfo); 3358 } 3359 } 3360 } 3361 } 3362 for (ShortcutInfo item: appsToRemoveFromFolder) { 3363 info.remove(item); 3364 LauncherModel.deleteItemFromDatabase(mLauncher, item); 3365 } 3366 } else if (tag instanceof LauncherAppWidgetInfo) { 3367 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3368 final AppWidgetProviderInfo provider = 3369 widgets.getAppWidgetInfo(info.appWidgetId); 3370 if (provider != null) { 3371 for (String packageName: packageNames) { 3372 if (packageName.equals(provider.provider.getPackageName())) { 3373 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3374 childrenToRemove.add(view); 3375 } 3376 } 3377 } 3378 } 3379 } 3380 3381 childCount = childrenToRemove.size(); 3382 for (int j = 0; j < childCount; j++) { 3383 View child = childrenToRemove.get(j); 3384 // Note: We can not remove the view directly from CellLayoutChildren as this 3385 // does not re-mark the spaces as unoccupied. 3386 layoutParent.removeViewInLayout(child); 3387 if (child instanceof DropTarget) { 3388 mDragController.removeDropTarget((DropTarget)child); 3389 } 3390 } 3391 3392 if (childCount > 0) { 3393 layout.requestLayout(); 3394 layout.invalidate(); 3395 } 3396 } 3397 }); 3398 } 3399 } 3400 3401 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3402 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3403 for (CellLayoutChildren layout: childrenLayouts) { 3404 int childCount = layout.getChildCount(); 3405 for (int j = 0; j < childCount; j++) { 3406 final View view = layout.getChildAt(j); 3407 Object tag = view.getTag(); 3408 if (tag instanceof ShortcutInfo) { 3409 ShortcutInfo info = (ShortcutInfo)tag; 3410 // We need to check for ACTION_MAIN otherwise getComponent() might 3411 // return null for some shortcuts (for instance, for shortcuts to 3412 // web pages.) 3413 final Intent intent = info.intent; 3414 final ComponentName name = intent.getComponent(); 3415 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3416 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3417 final int appCount = apps.size(); 3418 for (int k = 0; k < appCount; k++) { 3419 ApplicationInfo app = apps.get(k); 3420 if (app.componentName.equals(name)) { 3421 info.setIcon(mIconCache.getIcon(info.intent)); 3422 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 3423 new FastBitmapDrawable(info.getIcon(mIconCache)), 3424 null, null); 3425 } 3426 } 3427 } 3428 } 3429 } 3430 } 3431 } 3432 3433 void moveToDefaultScreen(boolean animate) { 3434 if (!isSmall()) { 3435 if (animate) { 3436 snapToPage(mDefaultPage); 3437 } else { 3438 setCurrentPage(mDefaultPage); 3439 } 3440 } 3441 getChildAt(mDefaultPage).requestFocus(); 3442 } 3443 3444 @Override 3445 public void syncPages() { 3446 } 3447 3448 @Override 3449 public void syncPageItems(int page, boolean immediate) { 3450 } 3451 3452 @Override 3453 protected String getCurrentPageDescription() { 3454 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 3455 return String.format(mContext.getString(R.string.workspace_scroll_format), 3456 page + 1, getChildCount()); 3457 } 3458 3459 public void getLocationInDragLayer(int[] loc) { 3460 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 3461 } 3462 3463 void showDockDivider(boolean immediately) { 3464 final ViewGroup parent = (ViewGroup) getParent(); 3465 final View qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3466 final View dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3467 if (qsbDivider != null && dockDivider != null) { 3468 qsbDivider.setVisibility(View.VISIBLE); 3469 dockDivider.setVisibility(View.VISIBLE); 3470 if (mDividerAnimator != null) { 3471 mDividerAnimator.cancel(); 3472 mDividerAnimator = null; 3473 } 3474 if (immediately) { 3475 qsbDivider.setAlpha(1f); 3476 dockDivider.setAlpha(1f); 3477 } else { 3478 mDividerAnimator = new AnimatorSet(); 3479 mDividerAnimator.playTogether(ObjectAnimator.ofFloat(qsbDivider, "alpha", 1f), 3480 ObjectAnimator.ofFloat(dockDivider, "alpha", 1f)); 3481 mDividerAnimator.setDuration(sScrollIndicatorFadeInDuration); 3482 mDividerAnimator.start(); 3483 } 3484 } 3485 } 3486 3487 void hideDockDivider(boolean immediately) { 3488 final ViewGroup parent = (ViewGroup) getParent(); 3489 final View qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3490 final View dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3491 if (qsbDivider != null && dockDivider != null) { 3492 if (mDividerAnimator != null) { 3493 mDividerAnimator.cancel(); 3494 mDividerAnimator = null; 3495 } 3496 if (immediately) { 3497 qsbDivider.setVisibility(View.GONE); 3498 dockDivider.setVisibility(View.GONE); 3499 qsbDivider.setAlpha(0f); 3500 dockDivider.setAlpha(0f); 3501 } else { 3502 mDividerAnimator = new AnimatorSet(); 3503 mDividerAnimator.playTogether(ObjectAnimator.ofFloat(qsbDivider, "alpha", 0f), 3504 ObjectAnimator.ofFloat(dockDivider, "alpha", 0f)); 3505 mDividerAnimator.addListener(new AnimatorListenerAdapter() { 3506 private boolean cancelled = false; 3507 @Override 3508 public void onAnimationCancel(android.animation.Animator animation) { 3509 cancelled = true; 3510 } 3511 @Override 3512 public void onAnimationEnd(android.animation.Animator animation) { 3513 if (!cancelled) { 3514 qsbDivider.setVisibility(View.GONE); 3515 dockDivider.setVisibility(View.GONE); 3516 } 3517 } 3518 }); 3519 mDividerAnimator.setDuration(sScrollIndicatorFadeOutDuration); 3520 mDividerAnimator.start(); 3521 } 3522 } 3523 } 3524} 3525