Workspace.java revision e3887cc4ec3cebda2333298e56a35acb49ccdf13
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 com.android.launcher.R; 20import com.android.launcher2.InstallWidgetReceiver.WidgetMimeTypeHandlerData; 21 22import android.animation.Animator; 23import android.animation.AnimatorListenerAdapter; 24import android.animation.AnimatorSet; 25import android.animation.ObjectAnimator; 26import android.animation.PropertyValuesHolder; 27import android.animation.TimeInterpolator; 28import android.animation.ValueAnimator; 29import android.animation.Animator.AnimatorListener; 30import android.animation.ValueAnimator.AnimatorUpdateListener; 31import android.app.AlertDialog; 32import android.app.WallpaperManager; 33import android.appwidget.AppWidgetManager; 34import android.appwidget.AppWidgetProviderInfo; 35import android.content.ClipData; 36import android.content.ClipDescription; 37import android.content.ComponentName; 38import android.content.Context; 39import android.content.Intent; 40import android.content.pm.PackageManager; 41import android.content.pm.ProviderInfo; 42import android.content.res.Resources; 43import android.content.res.TypedArray; 44import android.graphics.Bitmap; 45import android.graphics.Camera; 46import android.graphics.Canvas; 47import android.graphics.Matrix; 48import android.graphics.Paint; 49import android.graphics.Rect; 50import android.graphics.RectF; 51import android.graphics.Region.Op; 52import android.graphics.drawable.Drawable; 53import android.net.Uri; 54import android.os.IBinder; 55import android.os.Parcelable; 56import android.util.AttributeSet; 57import android.util.Log; 58import android.util.Pair; 59import android.view.Display; 60import android.view.DragEvent; 61import android.view.MotionEvent; 62import android.view.View; 63import android.view.animation.DecelerateInterpolator; 64import android.widget.TextView; 65import android.widget.Toast; 66 67import java.util.ArrayList; 68import java.util.HashSet; 69import java.util.List; 70 71/** 72 * The workspace is a wide area with a wallpaper and a finite number of pages. 73 * Each page contains a number of icons, folders or widgets the user can 74 * interact with. A workspace is meant to be used with a fixed width only. 75 */ 76public class Workspace extends SmoothPagedView 77 implements DropTarget, DragSource, DragScroller, View.OnTouchListener { 78 @SuppressWarnings({"UnusedDeclaration"}) 79 private static final String TAG = "Launcher.Workspace"; 80 81 // This is how much the workspace shrinks when we enter all apps or 82 // customization mode 83 private static final float SHRINK_FACTOR = 0.16f; 84 85 // How much the screens shrink when we enter spring loaded drag mode 86 private static final float SPRING_LOADED_DRAG_SHRINK_FACTOR = 0.7f; 87 88 // Y rotation to apply to the workspace screens 89 private static final float WORKSPACE_ROTATION = 12.5f; 90 91 // These are extra scale factors to apply to the mini home screens 92 // so as to achieve the desired transform 93 private static final float EXTRA_SCALE_FACTOR_0 = 0.972f; 94 private static final float EXTRA_SCALE_FACTOR_1 = 1.0f; 95 private static final float EXTRA_SCALE_FACTOR_2 = 1.10f; 96 97 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 98 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 99 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 100 101 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 102 private static final int BACKGROUND_FADE_IN_DURATION = 350; 103 104 // These animators are used to fade the children's outlines 105 private ObjectAnimator mChildrenOutlineFadeInAnimation; 106 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 107 private float mChildrenOutlineAlpha = 0; 108 109 // These properties refer to the background protection gradient used for AllApps and Customize 110 private ObjectAnimator mBackgroundFadeInAnimation; 111 private ObjectAnimator mBackgroundFadeOutAnimation; 112 private Drawable mBackground; 113 private Drawable mCustomizeTrayBackground; 114 private boolean mDrawCustomizeTrayBackground; 115 private float mBackgroundAlpha = 0; 116 private float mOverScrollMaxBackgroundAlpha = 0.0f; 117 private int mOverScrollPageIndex = -1; 118 119 private View mCustomizationDrawer; 120 private View mCustomizationDrawerContent; 121 private int[] mCustomizationDrawerPos = new int[2]; 122 private float[] mCustomizationDrawerTransformedPos = new float[2]; 123 124 private final WallpaperManager mWallpaperManager; 125 126 private int mDefaultPage; 127 128 private boolean mPageMoving = false; 129 private boolean mIsDragInProcess = false; 130 131 /** 132 * CellInfo for the cell that is currently being dragged 133 */ 134 private CellLayout.CellInfo mDragInfo; 135 136 /** 137 * Target drop area calculated during last acceptDrop call. 138 */ 139 private int[] mTargetCell = null; 140 141 /** 142 * The CellLayout that is currently being dragged over 143 */ 144 private CellLayout mDragTargetLayout = null; 145 146 private Launcher mLauncher; 147 private IconCache mIconCache; 148 private DragController mDragController; 149 150 // These are temporary variables to prevent having to allocate a new object just to 151 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 152 private int[] mTempCell = new int[2]; 153 private int[] mTempEstimate = new int[2]; 154 private float[] mTempOriginXY = new float[2]; 155 private float[] mTempDragCoordinates = new float[2]; 156 private float[] mTempTouchCoordinates = new float[2]; 157 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 158 private float[] mTempDragBottomRightCoordinates = new float[2]; 159 private Matrix mTempInverseMatrix = new Matrix(); 160 161 private SpringLoadedDragController mSpringLoadedDragController; 162 163 private static final int DEFAULT_CELL_COUNT_X = 4; 164 private static final int DEFAULT_CELL_COUNT_Y = 4; 165 166 private Drawable mPreviousIndicator; 167 private Drawable mNextIndicator; 168 169 // State variable that indicates whether the pages are small (ie when you're 170 // in all apps or customize mode) 171 private boolean mIsSmall = false; 172 private boolean mIsInUnshrinkAnimation = false; 173 private AnimatorListener mShrinkAnimationListener; 174 private AnimatorListener mUnshrinkAnimationListener; 175 enum ShrinkState { TOP, SPRING_LOADED, MIDDLE, BOTTOM_HIDDEN, BOTTOM_VISIBLE }; 176 private ShrinkState mShrinkState; 177 private boolean mWasSpringLoadedOnDragExit = false; 178 private boolean mWaitingToShrink = false; 179 private ShrinkState mWaitingToShrinkState; 180 private AnimatorSet mAnimator; 181 182 /** Is the user is dragging an item near the edge of a page? */ 183 private boolean mInScrollArea = false; 184 185 /** If mInScrollArea is true, the direction of the scroll. */ 186 private int mPendingScrollDirection = DragController.SCROLL_NONE; 187 188 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 189 private Bitmap mDragOutline = null; 190 private final Rect mTempRect = new Rect(); 191 private final int[] mTempXY = new int[2]; 192 193 private ValueAnimator mDropAnim = null; 194 private TimeInterpolator mQuintEaseOutInterpolator = new DecelerateInterpolator(2.5f); 195 private View mDropView = null; 196 private int[] mDropViewPos = new int[] { -1, -1 }; 197 198 // Paint used to draw external drop outline 199 private final Paint mExternalDragOutlinePaint = new Paint(); 200 201 // Camera and Matrix used to determine the final position of a neighboring CellLayout 202 private final Matrix mMatrix = new Matrix(); 203 private final Camera mCamera = new Camera(); 204 private final float mTempFloat2[] = new float[2]; 205 206 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 207 int mWallpaperWidth; 208 int mWallpaperHeight; 209 WallpaperOffsetInterpolator mWallpaperOffset; 210 boolean mUpdateWallpaperOffsetImmediately = false; 211 boolean mSyncWallpaperOffsetWithScroll = true; 212 213 /** 214 * Used to inflate the Workspace from XML. 215 * 216 * @param context The application's context. 217 * @param attrs The attributes set containing the Workspace's customization values. 218 */ 219 public Workspace(Context context, AttributeSet attrs) { 220 this(context, attrs, 0); 221 } 222 223 /** 224 * Used to inflate the Workspace from XML. 225 * 226 * @param context The application's context. 227 * @param attrs The attributes set containing the Workspace's customization values. 228 * @param defStyle Unused. 229 */ 230 public Workspace(Context context, AttributeSet attrs, int defStyle) { 231 super(context, attrs, defStyle); 232 mContentIsRefreshable = false; 233 234 if (!LauncherApplication.isScreenXLarge()) { 235 mFadeInAdjacentScreens = false; 236 } 237 238 mWallpaperManager = WallpaperManager.getInstance(context); 239 240 TypedArray a = context.obtainStyledAttributes(attrs, 241 R.styleable.Workspace, defStyle, 0); 242 int cellCountX = a.getInt(R.styleable.Workspace_cellCountX, DEFAULT_CELL_COUNT_X); 243 int cellCountY = a.getInt(R.styleable.Workspace_cellCountY, DEFAULT_CELL_COUNT_Y); 244 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 245 a.recycle(); 246 247 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 248 setHapticFeedbackEnabled(false); 249 250 initWorkspace(); 251 } 252 253 /** 254 * Initializes various states for this workspace. 255 */ 256 protected void initWorkspace() { 257 Context context = getContext(); 258 mCurrentPage = mDefaultPage; 259 Launcher.setScreen(mCurrentPage); 260 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 261 mIconCache = app.getIconCache(); 262 mExternalDragOutlinePaint.setAntiAlias(true); 263 setWillNotDraw(false); 264 265 try { 266 final Resources res = getResources(); 267 mBackground = res.getDrawable(R.drawable.all_apps_bg_gradient); 268 mCustomizeTrayBackground = res.getDrawable(R.drawable.customize_bg_gradient); 269 } catch (Resources.NotFoundException e) { 270 // In this case, we will skip drawing background protection 271 } 272 273 mUnshrinkAnimationListener = new AnimatorListenerAdapter() { 274 @Override 275 public void onAnimationStart(Animator animation) { 276 mIsInUnshrinkAnimation = true; 277 disableCacheUpdates(); 278 } 279 @Override 280 public void onAnimationEnd(Animator animation) { 281 mIsInUnshrinkAnimation = false; 282 mSyncWallpaperOffsetWithScroll = true; 283 if (mShrinkState != ShrinkState.SPRING_LOADED) { 284 mDrawCustomizeTrayBackground = false; 285 } 286 enableCacheUpdates(); 287 mAnimator = null; 288 } 289 }; 290 mShrinkAnimationListener = new AnimatorListenerAdapter() { 291 @Override 292 public void onAnimationStart(Animator animation) { 293 disableCacheUpdates(); 294 } 295 @Override 296 public void onAnimationEnd(Animator animation) { 297 enableCacheUpdates(); 298 mAnimator = null; 299 } 300 }; 301 mSnapVelocity = 600; 302 mWallpaperOffset = new WallpaperOffsetInterpolator(); 303 } 304 305 @Override 306 protected int getScrollMode() { 307 if (LauncherApplication.isScreenXLarge()) { 308 return SmoothPagedView.X_LARGE_MODE; 309 } else { 310 return SmoothPagedView.DEFAULT_MODE; 311 } 312 } 313 314 @Override 315 public void addView(View child, int index, LayoutParams params) { 316 if (!(child instanceof CellLayout)) { 317 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 318 } 319 ((CellLayout) child).setOnInterceptTouchListener(this); 320 super.addView(child, index, params); 321 } 322 323 @Override 324 public void addView(View child) { 325 if (!(child instanceof CellLayout)) { 326 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 327 } 328 ((CellLayout) child).setOnInterceptTouchListener(this); 329 super.addView(child); 330 } 331 332 @Override 333 public void addView(View child, int index) { 334 if (!(child instanceof CellLayout)) { 335 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 336 } 337 ((CellLayout) child).setOnInterceptTouchListener(this); 338 super.addView(child, index); 339 } 340 341 @Override 342 public void addView(View child, int width, int height) { 343 if (!(child instanceof CellLayout)) { 344 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 345 } 346 ((CellLayout) child).setOnInterceptTouchListener(this); 347 super.addView(child, width, height); 348 } 349 350 @Override 351 public void addView(View child, LayoutParams params) { 352 if (!(child instanceof CellLayout)) { 353 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 354 } 355 ((CellLayout) child).setOnInterceptTouchListener(this); 356 super.addView(child, params); 357 } 358 359 /** 360 * @return The open folder on the current screen, or null if there is none 361 */ 362 Folder getOpenFolder() { 363 CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 364 int count = currentPage.getChildCount(); 365 for (int i = 0; i < count; i++) { 366 View child = currentPage.getChildAt(i); 367 if (child instanceof Folder) { 368 Folder folder = (Folder) child; 369 if (folder.getInfo().opened) 370 return folder; 371 } 372 } 373 return null; 374 } 375 376 ArrayList<Folder> getOpenFolders() { 377 final int screenCount = getChildCount(); 378 ArrayList<Folder> folders = new ArrayList<Folder>(screenCount); 379 380 for (int screen = 0; screen < screenCount; screen++) { 381 CellLayout currentPage = (CellLayout) getChildAt(screen); 382 int count = currentPage.getChildCount(); 383 for (int i = 0; i < count; i++) { 384 View child = currentPage.getChildAt(i); 385 if (child instanceof Folder) { 386 Folder folder = (Folder) child; 387 if (folder.getInfo().opened) 388 folders.add(folder); 389 break; 390 } 391 } 392 } 393 return folders; 394 } 395 396 boolean isDefaultPageShowing() { 397 return mCurrentPage == mDefaultPage; 398 } 399 400 /** 401 * Adds the specified child in the specified screen. The position and dimension of 402 * the child are defined by x, y, spanX and spanY. 403 * 404 * @param child The child to add in one of the workspace's screens. 405 * @param screen The screen in which to add the child. 406 * @param x The X position of the child in the screen's grid. 407 * @param y The Y position of the child in the screen's grid. 408 * @param spanX The number of cells spanned horizontally by the child. 409 * @param spanY The number of cells spanned vertically by the child. 410 */ 411 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY) { 412 addInScreen(child, screen, x, y, spanX, spanY, false); 413 } 414 415 void addInFullScreen(View child, int screen) { 416 addInScreen(child, screen, 0, 0, -1, -1); 417 } 418 419 /** 420 * Adds the specified child in the specified screen. The position and dimension of 421 * the child are defined by x, y, spanX and spanY. 422 * 423 * @param child The child to add in one of the workspace's screens. 424 * @param screen The screen in which to add the child. 425 * @param x The X position of the child in the screen's grid. 426 * @param y The Y position of the child in the screen's grid. 427 * @param spanX The number of cells spanned horizontally by the child. 428 * @param spanY The number of cells spanned vertically by the child. 429 * @param insert When true, the child is inserted at the beginning of the children list. 430 */ 431 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY, boolean insert) { 432 if (screen < 0 || screen >= getChildCount()) { 433 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 434 + " (was " + screen + "); skipping child"); 435 return; 436 } 437 438 final CellLayout group = (CellLayout) getChildAt(screen); 439 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 440 if (lp == null) { 441 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 442 } else { 443 lp.cellX = x; 444 lp.cellY = y; 445 lp.cellHSpan = spanX; 446 lp.cellVSpan = spanY; 447 } 448 449 // Get the canonical child id to uniquely represent this view in this screen 450 int childId = LauncherModel.getCellLayoutChildId(-1, screen, x, y, spanX, spanY); 451 boolean markCellsAsOccupied = !(child instanceof Folder); 452 if (!group.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 453 // TODO: This branch occurs when the workspace is adding views 454 // outside of the defined grid 455 // maybe we should be deleting these items from the LauncherModel? 456 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 457 } 458 459 if (!(child instanceof Folder)) { 460 child.setHapticFeedbackEnabled(false); 461 child.setOnLongClickListener(mLongClickListener); 462 } 463 if (child instanceof DropTarget) { 464 mDragController.addDropTarget((DropTarget) child); 465 } 466 } 467 468 /** 469 * Check if the point (x, y) hits a given page. 470 */ 471 private boolean hitsPage(int index, float x, float y) { 472 final View page = getChildAt(index); 473 if (page != null) { 474 float[] localXY = { x, y }; 475 mapPointFromSelfToChild(page, localXY); 476 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 477 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 478 } 479 return false; 480 } 481 482 @Override 483 protected boolean hitsPreviousPage(float x, float y) { 484 // mNextPage is set to INVALID_PAGE whenever we are stationary. 485 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 486 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 487 return hitsPage(current - 1, x, y); 488 } 489 490 @Override 491 protected boolean hitsNextPage(float x, float y) { 492 // mNextPage is set to INVALID_PAGE whenever we are stationary. 493 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 494 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 495 return hitsPage(current + 1, x, y); 496 } 497 498 public boolean onTouch(View v, MotionEvent event) { 499 // this is an intercepted event being forwarded from a cell layout 500 if (mIsSmall || mIsInUnshrinkAnimation) { 501 // Only allow clicks on a CellLayout if it is visible 502 if (mShrinkState != ShrinkState.BOTTOM_HIDDEN) { 503 mLauncher.onWorkspaceClick((CellLayout) v); 504 } 505 return true; 506 } 507 return false; 508 } 509 510 protected void onWindowVisibilityChanged (int visibility) { 511 mLauncher.onWindowVisibilityChanged(visibility); 512 } 513 514 @Override 515 public boolean dispatchUnhandledMove(View focused, int direction) { 516 if (mIsSmall || mIsInUnshrinkAnimation) { 517 // when the home screens are shrunken, shouldn't allow side-scrolling 518 return false; 519 } 520 return super.dispatchUnhandledMove(focused, direction); 521 } 522 523 @Override 524 public boolean onInterceptTouchEvent(MotionEvent ev) { 525 if (mIsSmall || mIsInUnshrinkAnimation) { 526 if (mLauncher.isAllAppsVisible() && 527 mShrinkState == ShrinkState.BOTTOM_HIDDEN) { 528 // Intercept this event so we can show the workspace in full view 529 // when it is clicked on and it is small 530 return true; 531 } 532 return false; 533 } 534 return super.onInterceptTouchEvent(ev); 535 } 536 537 @Override 538 protected void determineScrollingStart(MotionEvent ev) { 539 if (!mIsSmall && !mIsInUnshrinkAnimation) super.determineScrollingStart(ev); 540 } 541 542 protected void onPageBeginMoving() { 543 if (mNextPage != INVALID_PAGE) { 544 // we're snapping to a particular screen 545 enableChildrenCache(mCurrentPage, mNextPage); 546 } else { 547 // this is when user is actively dragging a particular screen, they might 548 // swipe it either left or right (but we won't advance by more than one screen) 549 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 550 } 551 showOutlines(); 552 mPageMoving = true; 553 } 554 555 protected void onPageEndMoving() { 556 clearChildrenCache(); 557 // Hide the outlines, as long as we're not dragging 558 if (!mDragController.dragging()) { 559 hideOutlines(); 560 } 561 mOverScrollMaxBackgroundAlpha = 0.0f; 562 mOverScrollPageIndex = -1; 563 mPageMoving = false; 564 } 565 566 @Override 567 protected void notifyPageSwitchListener() { 568 super.notifyPageSwitchListener(); 569 570 if (mPreviousIndicator != null) { 571 // if we know the next page, we show the indication for it right away; it looks 572 // weird if the indicators are lagging 573 int page = mNextPage; 574 if (page == INVALID_PAGE) { 575 page = mCurrentPage; 576 } 577 mPreviousIndicator.setLevel(page); 578 mNextIndicator.setLevel(page); 579 } 580 Launcher.setScreen(mCurrentPage); 581 }; 582 583 // As a ratio of screen height, the total distance we want the parallax effect to span 584 // vertically 585 private float wallpaperTravelToScreenHeightRatio(int width, int height) { 586 return 1.1f; 587 } 588 589 // As a ratio of screen height, the total distance we want the parallax effect to span 590 // horizontally 591 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 592 float aspectRatio = width / (float) height; 593 594 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 595 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 596 // We will use these two data points to extrapolate how much the wallpaper parallax effect 597 // to span (ie travel) at any aspect ratio: 598 599 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 600 final float ASPECT_RATIO_PORTRAIT = 10/16f; 601 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 602 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 603 604 // To find out the desired width at different aspect ratios, we use the following two 605 // formulas, where the coefficient on x is the aspect ratio (width/height): 606 // (16/10)x + y = 1.5 607 // (10/16)x + y = 1.2 608 // We solve for x and y and end up with a final formula: 609 final float x = 610 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 611 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 612 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 613 return x * aspectRatio + y; 614 } 615 616 // The range of scroll values for Workspace 617 private int getScrollRange() { 618 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 619 } 620 621 protected void setWallpaperDimension() { 622 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 623 final int maxDim = Math.max(display.getWidth(), display.getHeight()); 624 final int minDim = Math.min(display.getWidth(), display.getHeight()); 625 626 // We need to ensure that there is enough extra space in the wallpaper for the intended 627 // parallax effects 628 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 629 mWallpaperHeight = (int)(maxDim * wallpaperTravelToScreenHeightRatio(maxDim, minDim)); 630 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 631 } 632 633 public void setVerticalWallpaperOffset(float offset) { 634 mWallpaperOffset.setFinalY(offset); 635 } 636 public float getVerticalWallpaperOffset() { 637 return mWallpaperOffset.getCurrY(); 638 } 639 public void setHorizontalWallpaperOffset(float offset) { 640 mWallpaperOffset.setFinalX(offset); 641 } 642 public float getHorizontalWallpaperOffset() { 643 return mWallpaperOffset.getCurrX(); 644 } 645 646 private float wallpaperOffsetForCurrentScroll() { 647 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 648 // The wallpaper travel width is how far, from left to right, the wallpaper will move 649 // at this orientation (for example, in portrait mode we don't move all the way to the 650 // edges of the wallpaper, or otherwise the parallax effect would be too strong) 651 int wallpaperTravelWidth = (int) (display.getWidth() * 652 wallpaperTravelToScreenWidthRatio(display.getWidth(), display.getHeight())); 653 654 // Account for overscroll: you only see the absolute edge of the wallpaper if 655 // you overscroll as far as you can in landscape mode 656 int overscrollOffset = (int) (maxOverScroll() * display.getWidth()); 657 float overscrollRatio = overscrollOffset / (float) getScrollRange(); 658 int scrollRangeWithOverscroll = getScrollRange() + 2 * overscrollOffset; 659 660 // Set wallpaper offset steps (1 / (number of screens - 1)) 661 // We have 3 vertical offset states (centered, and then top/bottom aligned 662 // for all apps/customize) 663 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f / (3 - 1)); 664 665 float scrollProgress = 666 mScrollX / (float) scrollRangeWithOverscroll + overscrollRatio; 667 float offsetInDips = wallpaperTravelWidth * scrollProgress + 668 (mWallpaperWidth - wallpaperTravelWidth) / 2; 669 float offset = offsetInDips / (float) mWallpaperWidth; 670 return offset; 671 } 672 private void syncWallpaperOffsetWithScroll() { 673 if (LauncherApplication.isScreenXLarge()) { 674 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 675 } 676 } 677 678 public void updateWallpaperOffsetImmediately() { 679 mUpdateWallpaperOffsetImmediately = true; 680 } 681 682 private void updateWallpaperOffsets() { 683 boolean updateNow = false; 684 boolean keepUpdating = true; 685 if (mUpdateWallpaperOffsetImmediately) { 686 updateNow = true; 687 keepUpdating = false; 688 mWallpaperOffset.jumpToFinal(); 689 mUpdateWallpaperOffsetImmediately = false; 690 } else { 691 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 692 } 693 if (updateNow) { 694 IBinder token = getWindowToken(); 695 if (token != null) { 696 mWallpaperManager.setWallpaperOffsets(getWindowToken(), 697 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 698 } 699 } 700 if (keepUpdating) { 701 invalidate(); 702 } 703 } 704 705 class WallpaperOffsetInterpolator { 706 float mFinalHorizontalWallpaperOffset = 0.0f; 707 float mFinalVerticalWallpaperOffset = 0.5f; 708 float mHorizontalWallpaperOffset = 0.0f; 709 float mVerticalWallpaperOffset = 0.5f; 710 long mLastWallpaperOffsetUpdateTime; 711 712 public WallpaperOffsetInterpolator() { 713 } 714 715 public boolean computeScrollOffset() { 716 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 717 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 718 return false; 719 } 720 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 721 boolean isLandscape = display.getWidth() > display.getHeight(); 722 723 long currentTime = System.currentTimeMillis(); 724 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 725 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 726 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 727 // ie 75% in 100ms 728 float fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.75f / 100 : 0.75f / 100; 729 float fractionToCatchUpIn1MsVertical = isLandscape ? 1.1f / 100 : 1.1f / 100; 730 731 final float UPDATE_THRESHOLD = 0.00001f; 732 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 733 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 734 boolean jumpToFinalValue = 735 Math.abs(hOffsetDelta / mFinalHorizontalWallpaperOffset) < UPDATE_THRESHOLD && 736 Math.abs(vOffsetDelta / mFinalVerticalWallpaperOffset) < UPDATE_THRESHOLD; 737 if (jumpToFinalValue) { 738 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 739 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 740 } else { 741 float percentToCatchUpVertical = 742 timeSinceLastUpdate * fractionToCatchUpIn1MsVertical; 743 float percentToCatchUpHorizontal = 744 timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal; 745 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 746 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 747 } 748 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 749 return true; 750 } 751 752 public float getCurrX() { 753 return mHorizontalWallpaperOffset; 754 } 755 756 public float getFinalX() { 757 return mFinalHorizontalWallpaperOffset; 758 } 759 760 public float getCurrY() { 761 return mVerticalWallpaperOffset; 762 } 763 764 public float getFinalY() { 765 return mFinalVerticalWallpaperOffset; 766 } 767 768 public void setFinalX(float x) { 769 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 770 } 771 772 public void setFinalY(float y) { 773 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 774 } 775 776 public void jumpToFinal() { 777 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 778 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 779 } 780 } 781 782 @Override 783 public void computeScroll() { 784 super.computeScroll(); 785 if (mSyncWallpaperOffsetWithScroll) { 786 syncWallpaperOffsetWithScroll(); 787 } 788 } 789 790 public void showOutlines() { 791 if (!mIsSmall && !mIsInUnshrinkAnimation) { 792 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 793 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 794 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 795 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 796 mChildrenOutlineFadeInAnimation.start(); 797 } 798 } 799 800 public void hideOutlines() { 801 if (!mIsSmall && !mIsInUnshrinkAnimation) { 802 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 803 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 804 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 805 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 806 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 807 mChildrenOutlineFadeOutAnimation.start(); 808 } 809 } 810 811 public void setChildrenOutlineAlpha(float alpha) { 812 mChildrenOutlineAlpha = alpha; 813 for (int i = 0; i < getChildCount(); i++) { 814 CellLayout cl = (CellLayout) getChildAt(i); 815 cl.setBackgroundAlpha(alpha); 816 } 817 } 818 819 public float getChildrenOutlineAlpha() { 820 return mChildrenOutlineAlpha; 821 } 822 823 private void showBackgroundGradientForAllApps() { 824 showBackgroundGradient(); 825 mDrawCustomizeTrayBackground = false; 826 } 827 828 private void showBackgroundGradientForCustomizeTray() { 829 showBackgroundGradient(); 830 mDrawCustomizeTrayBackground = true; 831 } 832 833 private void showBackgroundGradient() { 834 if (mBackground == null) return; 835 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 836 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 837 mBackgroundFadeInAnimation = ObjectAnimator.ofFloat(this, "backgroundAlpha", 1.0f); 838 mBackgroundFadeInAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 839 mBackgroundFadeInAnimation.setDuration(BACKGROUND_FADE_IN_DURATION); 840 mBackgroundFadeInAnimation.start(); 841 } 842 843 private void hideBackgroundGradient() { 844 if (mBackground == null) return; 845 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 846 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 847 mBackgroundFadeOutAnimation = ObjectAnimator.ofFloat(this, "backgroundAlpha", 0.0f); 848 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 849 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 850 mBackgroundFadeOutAnimation.start(); 851 } 852 853 public void setBackgroundAlpha(float alpha) { 854 mBackgroundAlpha = alpha; 855 invalidate(); 856 } 857 858 public float getBackgroundAlpha() { 859 return mBackgroundAlpha; 860 } 861 862 /** 863 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 864 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 865 * as being larger. This method computes what offset the rotated view should be translated 866 * in order to minimize this perceived gap. 867 * @param degrees Angle of the view 868 * @param width Width of the view 869 * @param height Height of the view 870 * @return Offset to be used in a View.setTranslationX() call 871 */ 872 private float getOffsetXForRotation(float degrees, int width, int height) { 873 mMatrix.reset(); 874 mCamera.save(); 875 mCamera.rotateY(Math.abs(degrees)); 876 mCamera.getMatrix(mMatrix); 877 mCamera.restore(); 878 879 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 880 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 881 mTempFloat2[0] = width; 882 mTempFloat2[1] = height; 883 mMatrix.mapPoints(mTempFloat2); 884 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 885 } 886 887 float backgroundAlphaInterpolator(float r) { 888 float pivotA = 0.1f; 889 float pivotB = 0.4f; 890 if (r < pivotA) { 891 return 0; 892 } else if (r > pivotB) { 893 return 1.0f; 894 } else { 895 return (r - pivotA)/(pivotB - pivotA); 896 } 897 } 898 899 float overScrollBackgroundAlphaInterpolator(float r) { 900 float threshold = 0.08f; 901 902 if (r > mOverScrollMaxBackgroundAlpha) { 903 mOverScrollMaxBackgroundAlpha = r; 904 } else if (r < mOverScrollMaxBackgroundAlpha) { 905 r = mOverScrollMaxBackgroundAlpha; 906 } 907 908 return Math.min(r / threshold, 1.0f); 909 } 910 911 @Override 912 protected void screenScrolled(int screenCenter) { 913 final int halfScreenSize = getMeasuredWidth() / 2; 914 915 for (int i = 0; i < getChildCount(); i++) { 916 CellLayout cl = (CellLayout) getChildAt(i); 917 if (cl != null) { 918 int totalDistance = getScaledMeasuredWidth(cl) + mPageSpacing; 919 int delta = screenCenter - (getChildOffset(i) - 920 getRelativeChildOffset(i) + halfScreenSize); 921 922 float scrollProgress = delta / (totalDistance * 1.0f); 923 scrollProgress = Math.min(scrollProgress, 1.0f); 924 scrollProgress = Math.max(scrollProgress, -1.0f); 925 926 // If the current page (i) is being overscrolled, we use a different 927 // set of rules for setting the background alpha multiplier. 928 if ((mScrollX < 0 && i == 0) || (mScrollX > mMaxScrollX && 929 i == getChildCount() -1 )) { 930 cl.setBackgroundAlphaMultiplier( 931 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 932 mOverScrollPageIndex = i; 933 } else if (mOverScrollPageIndex != i) { 934 cl.setBackgroundAlphaMultiplier( 935 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 936 } 937 938 float rotation = WORKSPACE_ROTATION * scrollProgress; 939 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 940 cl.setTranslationX(translationX); 941 942 cl.setRotationY(rotation); 943 } 944 } 945 } 946 947 protected void onAttachedToWindow() { 948 super.onAttachedToWindow(); 949 computeScroll(); 950 mDragController.setWindowToken(getWindowToken()); 951 } 952 953 @Override 954 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 955 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 956 mUpdateWallpaperOffsetImmediately = true; 957 } 958 super.onLayout(changed, left, top, right, bottom); 959 960 // if shrinkToBottom() is called on initialization, it has to be deferred 961 // until after the first call to onLayout so that it has the correct width 962 if (mWaitingToShrink) { 963 // shrink can trigger a synchronous onLayout call, so we 964 // post this to avoid a stack overflow / tangled onLayout calls 965 post(new Runnable() { 966 public void run() { 967 shrink(mWaitingToShrinkState, false); 968 mWaitingToShrink = false; 969 } 970 }); 971 } 972 973 if (LauncherApplication.isInPlaceRotationEnabled()) { 974 // When the device is rotated, the scroll position of the current screen 975 // needs to be refreshed 976 setCurrentPage(getCurrentPage()); 977 } 978 } 979 980 public void enableCacheUpdates() { 981 final int pageCount = getChildCount(); 982 for (int i = 0; i < pageCount; i++) { 983 final CellLayout page = (CellLayout) getChildAt(i); 984 page.enableCacheUpdates(); 985 } 986 } 987 988 public void disableCacheUpdates() { 989 final int pageCount = getChildCount(); 990 for (int i = 0; i < pageCount; i++) { 991 final CellLayout page = (CellLayout) getChildAt(i); 992 page.disableCacheUpdates(); 993 } 994 } 995 996 @Override 997 protected void onDraw(Canvas canvas) { 998 updateWallpaperOffsets(); 999 1000 // Draw the background gradient if necessary 1001 if (mBackground != null && mBackgroundAlpha > 0.0f) { 1002 int alpha = (int) (mBackgroundAlpha * 255); 1003 if (mDrawCustomizeTrayBackground) { 1004 // Find out where to offset the gradient for the customization tray content 1005 mCustomizationDrawer.getLocationOnScreen(mCustomizationDrawerPos); 1006 final Matrix m = mCustomizationDrawer.getMatrix(); 1007 mCustomizationDrawerTransformedPos[0] = 0.0f; 1008 mCustomizationDrawerTransformedPos[1] = mCustomizationDrawerContent.getTop(); 1009 m.mapPoints(mCustomizationDrawerTransformedPos); 1010 1011 // Draw the bg glow behind the gradient 1012 mCustomizeTrayBackground.setAlpha(alpha); 1013 mCustomizeTrayBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1014 getMeasuredHeight()); 1015 mCustomizeTrayBackground.draw(canvas); 1016 1017 // Draw the bg gradient 1018 final int offset = (int) (mCustomizationDrawerPos[1] + 1019 mCustomizationDrawerTransformedPos[1]); 1020 mBackground.setAlpha(alpha); 1021 mBackground.setBounds(mScrollX, offset, mScrollX + getMeasuredWidth(), 1022 offset + getMeasuredHeight()); 1023 mBackground.draw(canvas); 1024 } else { 1025 mBackground.setAlpha(alpha); 1026 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1027 getMeasuredHeight()); 1028 mBackground.draw(canvas); 1029 } 1030 } 1031 super.onDraw(canvas); 1032 } 1033 1034 @Override 1035 protected void dispatchDraw(Canvas canvas) { 1036 if (mIsSmall || mIsInUnshrinkAnimation) { 1037 // Draw all the workspaces if we're small 1038 final int pageCount = getChildCount(); 1039 final long drawingTime = getDrawingTime(); 1040 for (int i = 0; i < pageCount; i++) { 1041 final View page = (View) getChildAt(i); 1042 1043 drawChild(canvas, page, drawingTime); 1044 } 1045 } else { 1046 super.dispatchDraw(canvas); 1047 1048 final int width = getWidth(); 1049 final int height = getHeight(); 1050 1051 // In portrait orientation, draw the glowing edge when dragging to adjacent screens 1052 if (mInScrollArea && (height > width)) { 1053 final int pageHeight = getChildAt(0).getHeight(); 1054 1055 // This determines the height of the glowing edge: 90% of the page height 1056 final int padding = (int) ((height - pageHeight) * 0.5f + pageHeight * 0.1f); 1057 1058 final CellLayout leftPage = (CellLayout) getChildAt(mCurrentPage - 1); 1059 final CellLayout rightPage = (CellLayout) getChildAt(mCurrentPage + 1); 1060 1061 if (leftPage != null && leftPage.getIsDragOverlapping()) { 1062 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left); 1063 d.setBounds(mScrollX, padding, mScrollX + d.getIntrinsicWidth(), height - padding); 1064 d.draw(canvas); 1065 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 1066 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right); 1067 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), padding, mScrollX + width, height - padding); 1068 d.draw(canvas); 1069 } 1070 } 1071 1072 if (mDropView != null) { 1073 // We are animating an item that was just dropped on the home screen. 1074 // Render its View in the current animation position. 1075 canvas.save(Canvas.MATRIX_SAVE_FLAG); 1076 final int xPos = mDropViewPos[0] - mDropView.getScrollX(); 1077 final int yPos = mDropViewPos[1] - mDropView.getScrollY(); 1078 canvas.translate(xPos, yPos); 1079 mDropView.draw(canvas); 1080 canvas.restore(); 1081 } 1082 } 1083 } 1084 1085 @Override 1086 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1087 if (!mLauncher.isAllAppsVisible()) { 1088 final Folder openFolder = getOpenFolder(); 1089 if (openFolder != null) { 1090 return openFolder.requestFocus(direction, previouslyFocusedRect); 1091 } else { 1092 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1093 } 1094 } 1095 return false; 1096 } 1097 1098 @Override 1099 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1100 if (!mLauncher.isAllAppsVisible()) { 1101 final Folder openFolder = getOpenFolder(); 1102 if (openFolder != null) { 1103 openFolder.addFocusables(views, direction); 1104 } else { 1105 super.addFocusables(views, direction, focusableMode); 1106 } 1107 } 1108 } 1109 1110 @Override 1111 public boolean dispatchTouchEvent(MotionEvent ev) { 1112 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 1113 // (In XLarge mode, the workspace is shrunken below all apps, and responds to taps 1114 // ie when you click on a mini-screen, it zooms back to that screen) 1115 if (!LauncherApplication.isScreenXLarge() && mLauncher.isAllAppsVisible()) { 1116 return false; 1117 } 1118 } 1119 1120 return super.dispatchTouchEvent(ev); 1121 } 1122 1123 void enableChildrenCache(int fromPage, int toPage) { 1124 if (fromPage > toPage) { 1125 final int temp = fromPage; 1126 fromPage = toPage; 1127 toPage = temp; 1128 } 1129 1130 final int screenCount = getChildCount(); 1131 1132 fromPage = Math.max(fromPage, 0); 1133 toPage = Math.min(toPage, screenCount - 1); 1134 1135 for (int i = fromPage; i <= toPage; i++) { 1136 final CellLayout layout = (CellLayout) getChildAt(i); 1137 layout.setChildrenDrawnWithCacheEnabled(true); 1138 layout.setChildrenDrawingCacheEnabled(true); 1139 } 1140 } 1141 1142 void clearChildrenCache() { 1143 final int screenCount = getChildCount(); 1144 for (int i = 0; i < screenCount; i++) { 1145 final CellLayout layout = (CellLayout) getChildAt(i); 1146 layout.setChildrenDrawnWithCacheEnabled(false); 1147 } 1148 } 1149 1150 @Override 1151 public boolean onTouchEvent(MotionEvent ev) { 1152 if (mLauncher.isAllAppsVisible()) { 1153 // Cancel any scrolling that is in progress. 1154 if (!mScroller.isFinished()) { 1155 mScroller.abortAnimation(); 1156 } 1157 setCurrentPage(mCurrentPage); 1158 1159 if (mShrinkState == ShrinkState.BOTTOM_HIDDEN) { 1160 mLauncher.showWorkspace(true); 1161 // Let the events fall through to the CellLayouts because if they are not 1162 // hit, then we get a crash due to a missing ACTION_DOWN touch event 1163 } 1164 1165 return false; // We don't want the events 1166 } 1167 1168 return super.onTouchEvent(ev); 1169 } 1170 1171 @Override 1172 protected void onWallpaperTap(MotionEvent ev) { 1173 final int[] position = mTempCell; 1174 getLocationOnScreen(position); 1175 1176 int pointerIndex = ev.getActionIndex(); 1177 position[0] += (int) ev.getX(pointerIndex); 1178 position[1] += (int) ev.getY(pointerIndex); 1179 1180 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1181 ev.getAction() == MotionEvent.ACTION_UP 1182 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1183 position[0], position[1], 0, null); 1184 } 1185 1186 public boolean isSmall() { 1187 return mIsSmall; 1188 } 1189 1190 private float getYScaleForScreen(int screen) { 1191 int x = Math.abs(screen - 2); 1192 1193 // TODO: This should be generalized for use with arbitrary rotation angles. 1194 switch(x) { 1195 case 0: return EXTRA_SCALE_FACTOR_0; 1196 case 1: return EXTRA_SCALE_FACTOR_1; 1197 case 2: return EXTRA_SCALE_FACTOR_2; 1198 } 1199 return 1.0f; 1200 } 1201 1202 public void shrink(ShrinkState shrinkState) { 1203 shrink(shrinkState, true); 1204 } 1205 1206 // we use this to shrink the workspace for the all apps view and the customize view 1207 public void shrink(ShrinkState shrinkState, boolean animated) { 1208 if (mFirstLayout) { 1209 // (mFirstLayout == "first layout has not happened yet") 1210 // if we get a call to shrink() as part of our initialization (for example, if 1211 // Launcher is started in All Apps mode) then we need to wait for a layout call 1212 // to get our width so we can layout the mini-screen views correctly 1213 mWaitingToShrink = true; 1214 mWaitingToShrinkState = shrinkState; 1215 return; 1216 } 1217 // Stop any scrolling, move to the current page right away 1218 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1219 if (!mIsDragInProcess) { 1220 updateWhichPagesAcceptDrops(shrinkState); 1221 } 1222 1223 CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 1224 if (currentPage == null) { 1225 Log.w(TAG, "currentPage is NULL! mCurrentPage " + mCurrentPage 1226 + " mNextPage " + mNextPage); 1227 return; 1228 } 1229 if (currentPage.getBackgroundAlphaMultiplier() < 1.0f) { 1230 currentPage.setBackgroundAlpha(0.0f); 1231 } 1232 currentPage.setBackgroundAlphaMultiplier(1.0f); 1233 1234 mIsSmall = true; 1235 mShrinkState = shrinkState; 1236 1237 // we intercept and reject all touch events when we're small, so be sure to reset the state 1238 mTouchState = TOUCH_STATE_REST; 1239 mActivePointerId = INVALID_POINTER; 1240 1241 final Resources res = getResources(); 1242 final int screenWidth = getWidth(); 1243 final int screenHeight = getHeight(); 1244 1245 // Making the assumption that all pages have the same width as the 0th 1246 final int pageWidth = getChildAt(0).getMeasuredWidth(); 1247 final int pageHeight = getChildAt(0).getMeasuredHeight(); 1248 1249 final int scaledPageWidth = (int) (SHRINK_FACTOR * pageWidth); 1250 final int scaledPageHeight = (int) (SHRINK_FACTOR * pageHeight); 1251 final float extraScaledSpacing = res.getDimension(R.dimen.smallScreenExtraSpacing); 1252 1253 final int screenCount = getChildCount(); 1254 float totalWidth = screenCount * scaledPageWidth + (screenCount - 1) * extraScaledSpacing; 1255 1256 boolean isPortrait = getMeasuredHeight() > getMeasuredWidth(); 1257 float newY = (isPortrait ? 1258 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginPortrait) : 1259 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginLandscape)); 1260 float finalAlpha = 1.0f; 1261 float extraShrinkFactor = 1.0f; 1262 1263 if (shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1264 newY = screenHeight - newY - scaledPageHeight; 1265 } else if (shrinkState == ShrinkState.BOTTOM_HIDDEN) { 1266 // We shrink and disappear to nothing in the case of all apps 1267 // (which is when we shrink to the bottom) 1268 newY = screenHeight - newY - scaledPageHeight; 1269 finalAlpha = 0.0f; 1270 } else if (shrinkState == ShrinkState.MIDDLE) { 1271 newY = screenHeight / 2 - scaledPageHeight / 2; 1272 finalAlpha = 1.0f; 1273 } else if (shrinkState == ShrinkState.TOP) { 1274 newY = (isPortrait ? 1275 getResources().getDimension(R.dimen.customizeSmallScreenVerticalMarginPortrait) : 1276 getResources().getDimension(R.dimen.customizeSmallScreenVerticalMarginLandscape)); 1277 } 1278 1279 int duration; 1280 if (shrinkState == ShrinkState.BOTTOM_HIDDEN || shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1281 duration = res.getInteger(R.integer.config_allAppsWorkspaceShrinkTime); 1282 } else { 1283 duration = res.getInteger(R.integer.config_customizeWorkspaceShrinkTime); 1284 } 1285 1286 // We animate all the screens to the centered position in workspace 1287 // At the same time, the screens become greyed/dimmed 1288 1289 // newX is initialized to the left-most position of the centered screens 1290 float newX = mScroller.getFinalX() + screenWidth / 2 - totalWidth / 2; 1291 1292 // We are going to scale about the center of the view, so we need to adjust the positions 1293 // of the views accordingly 1294 newX -= (pageWidth - scaledPageWidth) / 2.0f; 1295 newY -= (pageHeight - scaledPageHeight) / 2.0f; 1296 1297 if (mAnimator != null) { 1298 mAnimator.cancel(); 1299 } 1300 1301 mAnimator = new AnimatorSet(); 1302 for (int i = 0; i < screenCount; i++) { 1303 final CellLayout cl = (CellLayout) getChildAt(i); 1304 1305 float rotation = (-i + 2) * WORKSPACE_ROTATION; 1306 float rotationScaleX = (float) (1.0f / Math.cos(Math.PI * rotation / 180.0f)); 1307 float rotationScaleY = getYScaleForScreen(i); 1308 1309 if (animated) { 1310 ObjectAnimator animWithInterpolator = ObjectAnimator.ofPropertyValuesHolder(cl, 1311 PropertyValuesHolder.ofFloat("x", newX), 1312 PropertyValuesHolder.ofFloat("y", newY), 1313 PropertyValuesHolder.ofFloat("scaleX", 1314 SHRINK_FACTOR * rotationScaleX * extraShrinkFactor), 1315 PropertyValuesHolder.ofFloat("scaleY", 1316 SHRINK_FACTOR * rotationScaleY * extraShrinkFactor), 1317 PropertyValuesHolder.ofFloat("backgroundAlpha", finalAlpha), 1318 PropertyValuesHolder.ofFloat("alpha", finalAlpha), 1319 PropertyValuesHolder.ofFloat("rotationY", rotation)); 1320 1321 animWithInterpolator.setDuration(duration); 1322 animWithInterpolator.setInterpolator(mZoomOutInterpolator); 1323 mAnimator.playTogether(animWithInterpolator); 1324 } else { 1325 cl.setX((int)newX); 1326 cl.setY((int)newY); 1327 cl.setScaleX(SHRINK_FACTOR * rotationScaleX * extraShrinkFactor); 1328 cl.setScaleY(SHRINK_FACTOR * rotationScaleY * extraShrinkFactor); 1329 cl.setBackgroundAlpha(finalAlpha); 1330 cl.setAlpha(finalAlpha); 1331 cl.setRotationY(rotation); 1332 mShrinkAnimationListener.onAnimationEnd(null); 1333 } 1334 // increment newX for the next screen 1335 newX += scaledPageWidth + extraScaledSpacing; 1336 } 1337 1338 float wallpaperOffset = 0.5f; 1339 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 1340 int wallpaperTravelHeight = (int) (display.getHeight() * 1341 wallpaperTravelToScreenHeightRatio(display.getWidth(), display.getHeight())); 1342 float offsetFromCenter = (wallpaperTravelHeight / (float) mWallpaperHeight) / 2f; 1343 switch (shrinkState) { 1344 case TOP: 1345 wallpaperOffset = 0.5f + offsetFromCenter; 1346 break; 1347 case MIDDLE: 1348 case SPRING_LOADED: 1349 wallpaperOffset = 0.5f; 1350 break; 1351 case BOTTOM_HIDDEN: 1352 case BOTTOM_VISIBLE: 1353 wallpaperOffset = 0.5f - offsetFromCenter; 1354 break; 1355 } 1356 1357 setLayoutScale(1.0f); 1358 if (animated) { 1359 mSyncWallpaperOffsetWithScroll = false; 1360 ObjectAnimator wallpaperAnim = ObjectAnimator.ofPropertyValuesHolder(this, 1361 PropertyValuesHolder.ofFloat("verticalWallpaperOffset", wallpaperOffset), 1362 PropertyValuesHolder.ofFloat("horizontalWallpaperOffset", 0.5f)); 1363 mAnimator.play(wallpaperAnim); 1364 1365 wallpaperAnim.setDuration(duration); 1366 wallpaperAnim.setInterpolator(mZoomOutInterpolator); 1367 mAnimator.addListener(mShrinkAnimationListener); 1368 mAnimator.start(); 1369 } else { 1370 setVerticalWallpaperOffset(wallpaperOffset); 1371 setHorizontalWallpaperOffset(0.5f); 1372 updateWallpaperOffsetImmediately(); 1373 } 1374 setChildrenDrawnWithCacheEnabled(true); 1375 1376 if (shrinkState == ShrinkState.TOP) { 1377 showBackgroundGradientForCustomizeTray(); 1378 } else { 1379 showBackgroundGradientForAllApps(); 1380 } 1381 } 1382 1383 /* 1384 * This interpolator emulates the rate at which the perceived scale of an object changes 1385 * as its distance from a camera increases. When this interpolator is applied to a scale 1386 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1387 * from the camera. 1388 */ 1389 static class ZInterpolator implements TimeInterpolator { 1390 private float focalLength; 1391 1392 public ZInterpolator(float foc) { 1393 focalLength = foc; 1394 } 1395 1396 public float getInterpolation(float input) { 1397 return (1.0f - focalLength / (focalLength + input)) / 1398 (1.0f - focalLength / (focalLength + 1.0f)); 1399 } 1400 } 1401 1402 /* 1403 * The exact reverse of ZInterpolator. 1404 */ 1405 static class InverseZInterpolator implements TimeInterpolator { 1406 private ZInterpolator zInterpolator; 1407 public InverseZInterpolator(float foc) { 1408 zInterpolator = new ZInterpolator(foc); 1409 } 1410 public float getInterpolation(float input) { 1411 return 1 - zInterpolator.getInterpolation(1 - input); 1412 } 1413 } 1414 1415 /* 1416 * ZInterpolator compounded with an ease-out. 1417 */ 1418 static class ZoomOutInterpolator implements TimeInterpolator { 1419 private final ZInterpolator zInterpolator = new ZInterpolator(0.2f); 1420 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(1.5f); 1421 1422 public float getInterpolation(float input) { 1423 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1424 } 1425 } 1426 1427 /* 1428 * InvereZInterpolator compounded with an ease-out. 1429 */ 1430 static class ZoomInInterpolator implements TimeInterpolator { 1431 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1432 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1433 1434 public float getInterpolation(float input) { 1435 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1436 } 1437 } 1438 1439 private final ZoomOutInterpolator mZoomOutInterpolator = new ZoomOutInterpolator(); 1440 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1441 1442 private void updateWhichPagesAcceptDrops(ShrinkState state) { 1443 updateWhichPagesAcceptDropsHelper(state, false, 1, 1); 1444 } 1445 1446 private void updateWhichPagesAcceptDropsDuringDrag(ShrinkState state, int spanX, int spanY) { 1447 updateWhichPagesAcceptDropsHelper(state, true, spanX, spanY); 1448 } 1449 1450 private void updateWhichPagesAcceptDropsHelper( 1451 ShrinkState state, boolean isDragHappening, int spanX, int spanY) { 1452 final int screenCount = getChildCount(); 1453 for (int i = 0; i < screenCount; i++) { 1454 CellLayout cl = (CellLayout) getChildAt(i); 1455 cl.setIsDragOccuring(isDragHappening); 1456 switch (state) { 1457 case TOP: 1458 cl.setIsDefaultDropTarget(i == mCurrentPage); 1459 case BOTTOM_HIDDEN: 1460 case BOTTOM_VISIBLE: 1461 if (!isDragHappening) { 1462 // even if a drag isn't happening, we don't want to show a screen as 1463 // accepting drops if it doesn't have at least one free cell 1464 spanX = 1; 1465 spanY = 1; 1466 } 1467 // the page accepts drops if we can find at least one empty spot 1468 cl.setAcceptsDrops(cl.findCellForSpan(null, spanX, spanY)); 1469 break; 1470 default: 1471 throw new RuntimeException( 1472 "updateWhichPagesAcceptDropsHelper passed an unhandled ShrinkState"); 1473 } 1474 } 1475 } 1476 1477 /* 1478 * 1479 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithItemMinSize) whenever we 1480 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1481 * 1482 * These methods mark the appropriate pages as accepting drops (which alters their visual 1483 * appearance). 1484 * 1485 */ 1486 public void onDragStartedWithItemSpans(int spanX, int spanY, Bitmap b) { 1487 mIsDragInProcess = true; 1488 1489 final Canvas canvas = new Canvas(); 1490 1491 // We need to add extra padding to the bitmap to make room for the glow effect 1492 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1493 1494 // The outline is used to visualize where the item will land if dropped 1495 mDragOutline = createDragOutline(b, canvas, bitmapPadding); 1496 1497 updateWhichPagesAcceptDropsDuringDrag(mShrinkState, spanX, spanY); 1498 } 1499 1500 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1501 // never dragged over 1502 public void onDragStopped() { 1503 mIsDragInProcess = false; 1504 updateWhichPagesAcceptDrops(mShrinkState); 1505 } 1506 1507 // We call this when we trigger an unshrink by clicking on the CellLayout cl 1508 public void unshrink(CellLayout clThatWasClicked) { 1509 unshrink(clThatWasClicked, false); 1510 } 1511 1512 public void unshrink(CellLayout clThatWasClicked, boolean springLoaded) { 1513 int newCurrentPage = indexOfChild(clThatWasClicked); 1514 if (mIsSmall) { 1515 if (springLoaded) { 1516 setLayoutScale(SPRING_LOADED_DRAG_SHRINK_FACTOR); 1517 } 1518 moveToNewPageWithoutMovingCellLayouts(newCurrentPage); 1519 unshrink(true, springLoaded); 1520 } 1521 } 1522 1523 1524 public void enterSpringLoadedDragMode(CellLayout clThatWasClicked) { 1525 mShrinkState = ShrinkState.SPRING_LOADED; 1526 unshrink(clThatWasClicked, true); 1527 mDragTargetLayout.onDragEnter(); 1528 } 1529 1530 public void exitSpringLoadedDragMode(ShrinkState shrinkState) { 1531 shrink(shrinkState); 1532 if (mDragTargetLayout != null) { 1533 mDragTargetLayout.onDragExit(); 1534 } 1535 } 1536 1537 void unshrink(boolean animated) { 1538 unshrink(animated, false); 1539 } 1540 1541 void unshrink(boolean animated, boolean springLoaded) { 1542 mWaitingToShrink = false; 1543 if (mIsSmall) { 1544 float finalScaleFactor = 1.0f; 1545 float finalBackgroundAlpha = 0.0f; 1546 if (springLoaded) { 1547 finalScaleFactor = SPRING_LOADED_DRAG_SHRINK_FACTOR; 1548 finalBackgroundAlpha = 1.0f; 1549 } else { 1550 mIsSmall = false; 1551 } 1552 if (mAnimator != null) { 1553 mAnimator.cancel(); 1554 } 1555 1556 mAnimator = new AnimatorSet(); 1557 final int screenCount = getChildCount(); 1558 1559 final int duration = getResources().getInteger(R.integer.config_workspaceUnshrinkTime); 1560 for (int i = 0; i < screenCount; i++) { 1561 final CellLayout cl = (CellLayout)getChildAt(i); 1562 float finalAlphaValue = (i == mCurrentPage) ? 1.0f : 0.0f; 1563 float finalAlphaMultiplierValue = 1564 ((i == mCurrentPage) && (mShrinkState != ShrinkState.SPRING_LOADED)) ? 1565 0.0f : 1.0f; 1566 float rotation = 0.0f; 1567 1568 if (i < mCurrentPage) { 1569 rotation = WORKSPACE_ROTATION; 1570 } else if (i > mCurrentPage) { 1571 rotation = -WORKSPACE_ROTATION; 1572 } 1573 1574 float translation = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1575 1576 if (animated) { 1577 ObjectAnimator animWithInterpolator = ObjectAnimator.ofPropertyValuesHolder(cl, 1578 PropertyValuesHolder.ofFloat("translationX", translation), 1579 PropertyValuesHolder.ofFloat("translationY", 0.0f), 1580 PropertyValuesHolder.ofFloat("scaleX", finalScaleFactor), 1581 PropertyValuesHolder.ofFloat("scaleY", finalScaleFactor), 1582 PropertyValuesHolder.ofFloat("backgroundAlpha", finalBackgroundAlpha), 1583 PropertyValuesHolder.ofFloat("backgroundAlphaMultiplier", 1584 finalAlphaMultiplierValue), 1585 PropertyValuesHolder.ofFloat("alpha", finalAlphaValue)); 1586 animWithInterpolator.setDuration(duration); 1587 animWithInterpolator.setInterpolator(mZoomInInterpolator); 1588 1589 ObjectAnimator rotationAnim = ObjectAnimator.ofPropertyValuesHolder(cl, 1590 PropertyValuesHolder.ofFloat("rotationY", rotation)); 1591 rotationAnim.setDuration(duration); 1592 rotationAnim.setInterpolator(new DecelerateInterpolator(2.0f)); 1593 1594 mAnimator.playTogether(animWithInterpolator, rotationAnim); 1595 } else { 1596 cl.setTranslationX(translation); 1597 cl.setTranslationY(0.0f); 1598 cl.setScaleX(finalScaleFactor); 1599 cl.setScaleY(finalScaleFactor); 1600 cl.setBackgroundAlpha(0.0f); 1601 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1602 cl.setAlpha(finalAlphaValue); 1603 cl.setRotationY(rotation); 1604 mUnshrinkAnimationListener.onAnimationEnd(null); 1605 } 1606 } 1607 if (animated) { 1608 ObjectAnimator wallpaperAnim = ObjectAnimator.ofPropertyValuesHolder(this, 1609 PropertyValuesHolder.ofFloat( 1610 "verticalWallpaperOffset", 0.5f), 1611 PropertyValuesHolder.ofFloat( 1612 "horizontalWallpaperOffset", wallpaperOffsetForCurrentScroll())); 1613 mAnimator.play(wallpaperAnim); 1614 wallpaperAnim.setDuration(duration); 1615 wallpaperAnim.setInterpolator(mZoomInInterpolator); 1616 } else { 1617 setHorizontalWallpaperOffset(wallpaperOffsetForCurrentScroll()); 1618 setVerticalWallpaperOffset(0.5f); 1619 updateWallpaperOffsetImmediately(); 1620 } 1621 1622 if (animated) { 1623 // If we call this when we're not animated, onAnimationEnd is never called on 1624 // the listener; make sure we only use the listener when we're actually animating 1625 mAnimator.addListener(mUnshrinkAnimationListener); 1626 mAnimator.start(); 1627 } 1628 } 1629 1630 if (!springLoaded) { 1631 hideBackgroundGradient(); 1632 } 1633 } 1634 1635 /** 1636 * Draw the View v into the given Canvas. 1637 * 1638 * @param v the view to draw 1639 * @param destCanvas the canvas to draw on 1640 * @param padding the horizontal and vertical padding to use when drawing 1641 */ 1642 private void drawDragView(View v, Canvas destCanvas, int padding) { 1643 final Rect clipRect = mTempRect; 1644 v.getDrawingRect(clipRect); 1645 1646 // For a TextView, adjust the clip rect so that we don't include the text label 1647 if (v instanceof BubbleTextView) { 1648 final BubbleTextView tv = (BubbleTextView) v; 1649 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1650 tv.getLayout().getLineTop(0); 1651 } else if (v instanceof TextView) { 1652 final TextView tv = (TextView) v; 1653 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1654 tv.getLayout().getLineTop(0); 1655 } 1656 1657 // Draw the View into the bitmap. 1658 // The translate of scrollX and scrollY is necessary when drawing TextViews, because 1659 // they set scrollX and scrollY to large values to achieve centered text 1660 1661 destCanvas.save(); 1662 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1663 destCanvas.clipRect(clipRect, Op.REPLACE); 1664 v.draw(destCanvas); 1665 destCanvas.restore(); 1666 } 1667 1668 /** 1669 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1670 * Responsibility for the bitmap is transferred to the caller. 1671 */ 1672 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1673 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1674 final Bitmap b = Bitmap.createBitmap( 1675 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1676 1677 canvas.setBitmap(b); 1678 drawDragView(v, canvas, padding); 1679 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1680 return b; 1681 } 1682 1683 /** 1684 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1685 * Responsibility for the bitmap is transferred to the caller. 1686 */ 1687 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding) { 1688 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1689 final Bitmap b = Bitmap.createBitmap( 1690 orig.getWidth() + padding, orig.getHeight() + padding, Bitmap.Config.ARGB_8888); 1691 1692 canvas.setBitmap(b); 1693 canvas.drawBitmap(orig, 0, 0, new Paint()); 1694 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1695 1696 return b; 1697 } 1698 1699 /** 1700 * Creates a drag outline to represent a drop (that we don't have the actual information for 1701 * yet). May be changed in the future to alter the drop outline slightly depending on the 1702 * clip description mime data. 1703 */ 1704 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 1705 Resources r = getResources(); 1706 final int outlineColor = r.getColor(R.color.drag_outline_color); 1707 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 1708 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 1709 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 1710 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 1711 final Bitmap b = Bitmap.createBitmap( 1712 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 1713 1714 canvas.setBitmap(b); 1715 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 1716 rectRadius, rectRadius, mExternalDragOutlinePaint); 1717 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1718 return b; 1719 } 1720 1721 /** 1722 * Returns a new bitmap to show when the given View is being dragged around. 1723 * Responsibility for the bitmap is transferred to the caller. 1724 */ 1725 private Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1726 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1727 final Bitmap b = Bitmap.createBitmap( 1728 mDragOutline.getWidth(), mDragOutline.getHeight(), Bitmap.Config.ARGB_8888); 1729 1730 canvas.setBitmap(b); 1731 canvas.drawBitmap(mDragOutline, 0, 0, null); 1732 drawDragView(v, canvas, padding); 1733 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 1734 1735 return b; 1736 } 1737 1738 void startDrag(CellLayout.CellInfo cellInfo) { 1739 View child = cellInfo.cell; 1740 1741 // Make sure the drag was started by a long press as opposed to a long click. 1742 if (!child.isInTouchMode()) { 1743 return; 1744 } 1745 1746 mDragInfo = cellInfo; 1747 1748 CellLayout current = (CellLayout) getChildAt(cellInfo.screen); 1749 current.onDragChild(child); 1750 1751 child.clearFocus(); 1752 child.setPressed(false); 1753 1754 final Canvas canvas = new Canvas(); 1755 1756 // We need to add extra padding to the bitmap to make room for the glow effect 1757 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1758 1759 // The outline is used to visualize where the item will land if dropped 1760 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 1761 1762 // The drag bitmap follows the touch point around on the screen 1763 final Bitmap b = createDragBitmap(child, canvas, bitmapPadding); 1764 1765 final int bmpWidth = b.getWidth(); 1766 final int bmpHeight = b.getHeight(); 1767 child.getLocationOnScreen(mTempXY); 1768 final int screenX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 1769 final int screenY = (int) mTempXY[1] + (child.getHeight() - bmpHeight) / 2; 1770 mLauncher.lockScreenOrientation(); 1771 mDragController.startDrag(b, screenX, screenY, 0, 0, bmpWidth, bmpHeight, this, 1772 child.getTag(), DragController.DRAG_ACTION_MOVE, null); 1773 b.recycle(); 1774 } 1775 1776 void addApplicationShortcut(ShortcutInfo info, int screen, int cellX, int cellY, 1777 boolean insertAtFirst, int intersectX, int intersectY) { 1778 final CellLayout cellLayout = (CellLayout) getChildAt(screen); 1779 View view = mLauncher.createShortcut(R.layout.application, cellLayout, (ShortcutInfo) info); 1780 1781 final int[] cellXY = new int[2]; 1782 cellLayout.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1783 addInScreen(view, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1784 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 1785 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 1786 cellXY[0], cellXY[1]); 1787 } 1788 1789 private void setPositionForDropAnimation( 1790 View dragView, int dragViewX, int dragViewY, View parent, View child) { 1791 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 1792 1793 // Based on the position of the drag view, find the top left of the original view 1794 int viewX = dragViewX + (dragView.getWidth() - child.getWidth()) / 2; 1795 int viewY = dragViewY + (dragView.getHeight() - child.getHeight()) / 2; 1796 viewX += getResources().getInteger(R.integer.config_dragViewOffsetX); 1797 viewY += getResources().getInteger(R.integer.config_dragViewOffsetY); 1798 1799 // Set its old pos (in the new parent's coordinates); it will be animated 1800 // in animateViewIntoPosition after the next layout pass 1801 lp.oldX = viewX - (parent.getLeft() - mScrollX); 1802 lp.oldY = viewY - (parent.getTop() - mScrollY); 1803 } 1804 1805 /* 1806 * We should be careful that this method cannot result in any synchronous requestLayout() 1807 * calls, as it is called from onLayout(). 1808 */ 1809 public void animateViewIntoPosition(final View view) { 1810 final CellLayout parent = (CellLayout) view.getParent(); 1811 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 1812 1813 // Convert the animation params to be relative to the Workspace, not the CellLayout 1814 final int fromX = lp.oldX + parent.getLeft(); 1815 final int fromY = lp.oldY + parent.getTop(); 1816 1817 final int dx = lp.x - lp.oldX; 1818 final int dy = lp.y - lp.oldY; 1819 1820 // Calculate the duration of the animation based on the object's distance 1821 final float dist = (float) Math.sqrt(dx*dx + dy*dy); 1822 final Resources res = getResources(); 1823 final float maxDist = (float) res.getInteger(R.integer.config_dropAnimMaxDist); 1824 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration); 1825 if (dist < maxDist) { 1826 duration *= mQuintEaseOutInterpolator.getInterpolation(dist / maxDist); 1827 } 1828 1829 if (mDropAnim != null) { 1830 mDropAnim.end(); 1831 } 1832 mDropAnim = new ValueAnimator(); 1833 mDropAnim.setInterpolator(mQuintEaseOutInterpolator); 1834 1835 // The view is invisible during the animation; we render it manually. 1836 mDropAnim.addListener(new AnimatorListenerAdapter() { 1837 public void onAnimationStart(Animator animation) { 1838 // Set this here so that we don't render it until the animation begins 1839 mDropView = view; 1840 } 1841 1842 public void onAnimationEnd(Animator animation) { 1843 if (mDropView != null) { 1844 mDropView.setVisibility(View.VISIBLE); 1845 mDropView = null; 1846 } 1847 } 1848 }); 1849 1850 mDropAnim.setDuration(duration); 1851 mDropAnim.setFloatValues(0.0f, 1.0f); 1852 mDropAnim.removeAllUpdateListeners(); 1853 mDropAnim.addUpdateListener(new AnimatorUpdateListener() { 1854 public void onAnimationUpdate(ValueAnimator animation) { 1855 final float percent = (Float) animation.getAnimatedValue(); 1856 // Invalidate the old position 1857 invalidate(mDropViewPos[0], mDropViewPos[1], 1858 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 1859 1860 mDropViewPos[0] = fromX + (int) (percent * dx + 0.5f); 1861 mDropViewPos[1] = fromY + (int) (percent * dy + 0.5f); 1862 invalidate(mDropViewPos[0], mDropViewPos[1], 1863 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 1864 } 1865 }); 1866 1867 mDropAnim.start(); 1868 } 1869 1870 /** 1871 * {@inheritDoc} 1872 */ 1873 public boolean acceptDrop(DragSource source, int x, int y, 1874 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 1875 1876 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1877 if (source != this) { 1878 // Don't accept the drop if we're not over a screen at time of drop 1879 if (mDragTargetLayout == null || !mDragTargetLayout.getAcceptsDrops()) { 1880 return false; 1881 } 1882 1883 final CellLayout.CellInfo dragCellInfo = mDragInfo; 1884 final int spanX = dragCellInfo == null ? 1 : dragCellInfo.spanX; 1885 final int spanY = dragCellInfo == null ? 1 : dragCellInfo.spanY; 1886 1887 final View ignoreView = dragCellInfo == null ? null : dragCellInfo.cell; 1888 1889 // Don't accept the drop if there's no room for the item 1890 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 1891 mLauncher.showOutOfSpaceMessage(); 1892 return false; 1893 } 1894 } 1895 return true; 1896 } 1897 1898 public void onDrop(DragSource source, int x, int y, int xOffset, int yOffset, 1899 DragView dragView, Object dragInfo) { 1900 1901 int originX = x - xOffset; 1902 int originY = y - yOffset; 1903 1904 if (mIsSmall || mIsInUnshrinkAnimation) { 1905 // get originX and originY in the local coordinate system of the screen 1906 mTempOriginXY[0] = originX; 1907 mTempOriginXY[1] = originY; 1908 mapPointFromSelfToChild(mDragTargetLayout, mTempOriginXY); 1909 originX = (int)mTempOriginXY[0]; 1910 originY = (int)mTempOriginXY[1]; 1911 } 1912 1913 // When you drag to a particular screen, make that the new current/default screen, so any 1914 // subsequent taps add items to that screen 1915 int dragTargetIndex = indexOfChild(mDragTargetLayout); 1916 if (mCurrentPage != dragTargetIndex && (mIsSmall || mIsInUnshrinkAnimation)) { 1917 moveToNewPageWithoutMovingCellLayouts(dragTargetIndex); 1918 } 1919 1920 if (source != this) { 1921 if (!mIsSmall || mWasSpringLoadedOnDragExit) { 1922 onDropExternal(originX, originY, dragInfo, mDragTargetLayout, false); 1923 } else { 1924 // if we drag and drop to small screens, don't pass the touch x/y coords (when we 1925 // enable spring-loaded adding, however, we do want to pass the touch x/y coords) 1926 onDropExternal(-1, -1, dragInfo, mDragTargetLayout, false); 1927 } 1928 } else if (mDragInfo != null) { 1929 final View cell = mDragInfo.cell; 1930 CellLayout dropTargetLayout = mDragTargetLayout; 1931 1932 // Handle the case where the user drops when in the scroll area. 1933 // This is treated as a drop on the adjacent page. 1934 if (dropTargetLayout == null && mInScrollArea) { 1935 if (mPendingScrollDirection == DragController.SCROLL_LEFT) { 1936 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage - 1); 1937 } else if (mPendingScrollDirection == DragController.SCROLL_RIGHT) { 1938 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage + 1); 1939 } 1940 } 1941 1942 if (dropTargetLayout != null) { 1943 // Move internally 1944 mTargetCell = findNearestVacantArea(originX, originY, 1945 mDragInfo.spanX, mDragInfo.spanY, cell, dropTargetLayout, 1946 mTargetCell); 1947 1948 final int screen = (mTargetCell == null) ? 1949 mDragInfo.screen : indexOfChild(dropTargetLayout); 1950 1951 if (screen != mCurrentPage) { 1952 snapToPage(screen); 1953 } 1954 1955 if (mTargetCell != null) { 1956 if (screen != mDragInfo.screen) { 1957 // Reparent the view 1958 ((CellLayout) getChildAt(mDragInfo.screen)).removeView(cell); 1959 addInScreen(cell, screen, mTargetCell[0], mTargetCell[1], 1960 mDragInfo.spanX, mDragInfo.spanY); 1961 } 1962 1963 // update the item's position after drop 1964 final ItemInfo info = (ItemInfo) cell.getTag(); 1965 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 1966 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 1967 lp.cellX = mTargetCell[0]; 1968 lp.cellY = mTargetCell[1]; 1969 cell.setId(LauncherModel.getCellLayoutChildId(-1, mDragInfo.screen, 1970 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 1971 1972 LauncherModel.moveItemInDatabase(mLauncher, info, 1973 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 1974 lp.cellX, lp.cellY); 1975 } 1976 } 1977 1978 final CellLayout parent = (CellLayout) cell.getParent(); 1979 1980 // Prepare it to be animated into its new position 1981 // This must be called after the view has been re-parented 1982 setPositionForDropAnimation(dragView, originX, originY, parent, cell); 1983 boolean animateDrop = !mWasSpringLoadedOnDragExit; 1984 parent.onDropChild(cell, animateDrop); 1985 } 1986 } 1987 1988 public void onDragEnter(DragSource source, int x, int y, int xOffset, 1989 int yOffset, DragView dragView, Object dragInfo) { 1990 mDragTargetLayout = null; // Reset the drag state 1991 1992 if (!mIsSmall) { 1993 mDragTargetLayout = getCurrentDropLayout(); 1994 mDragTargetLayout.onDragEnter(); 1995 showOutlines(); 1996 } 1997 } 1998 1999 public DropTarget getDropTargetDelegate(DragSource source, int x, int y, 2000 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 2001 2002 if (mIsSmall || mIsInUnshrinkAnimation) { 2003 // If we're shrunken, don't let anyone drag on folders/etc that are on the mini-screens 2004 return null; 2005 } 2006 // We may need to delegate the drag to a child view. If a 1x1 item 2007 // would land in a cell occupied by a DragTarget (e.g. a Folder), 2008 // then drag events should be handled by that child. 2009 2010 ItemInfo item = (ItemInfo)dragInfo; 2011 CellLayout currentLayout = getCurrentDropLayout(); 2012 2013 int dragPointX, dragPointY; 2014 if (item.spanX == 1 && item.spanY == 1) { 2015 // For a 1x1, calculate the drop cell exactly as in onDragOver 2016 dragPointX = x - xOffset; 2017 dragPointY = y - yOffset; 2018 } else { 2019 // Otherwise, use the exact drag coordinates 2020 dragPointX = x; 2021 dragPointY = y; 2022 } 2023 dragPointX += mScrollX - currentLayout.getLeft(); 2024 dragPointY += mScrollY - currentLayout.getTop(); 2025 2026 // If we are dragging over a cell that contains a DropTarget that will 2027 // accept the drop, delegate to that DropTarget. 2028 final int[] cellXY = mTempCell; 2029 currentLayout.estimateDropCell(dragPointX, dragPointY, item.spanX, item.spanY, cellXY); 2030 View child = currentLayout.getChildAt(cellXY[0], cellXY[1]); 2031 if (child instanceof DropTarget) { 2032 DropTarget target = (DropTarget)child; 2033 if (target.acceptDrop(source, x, y, xOffset, yOffset, dragView, dragInfo)) { 2034 return target; 2035 } 2036 } 2037 return null; 2038 } 2039 2040 /** 2041 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 2042 * in the returned structure related to the widgets that match the drop (or a null list if it is 2043 * a shortcut drop). If the drop is not accepted then a null structure is returned. 2044 */ 2045 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 2046 final LauncherModel model = mLauncher.getModel(); 2047 final ClipDescription desc = event.getClipDescription(); 2048 final int mimeTypeCount = desc.getMimeTypeCount(); 2049 for (int i = 0; i < mimeTypeCount; ++i) { 2050 final String mimeType = desc.getMimeType(i); 2051 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 2052 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 2053 } else { 2054 final List<WidgetMimeTypeHandlerData> widgets = 2055 model.resolveWidgetsForMimeType(mContext, mimeType); 2056 if (widgets.size() > 0) { 2057 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 2058 } 2059 } 2060 } 2061 return null; 2062 } 2063 2064 /** 2065 * Global drag and drop handler 2066 */ 2067 @Override 2068 public boolean onDragEvent(DragEvent event) { 2069 final ClipDescription desc = event.getClipDescription(); 2070 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 2071 final int[] pos = new int[2]; 2072 layout.getLocationOnScreen(pos); 2073 // We need to offset the drag coordinates to layout coordinate space 2074 final int x = (int) event.getX() - pos[0]; 2075 final int y = (int) event.getY() - pos[1]; 2076 2077 switch (event.getAction()) { 2078 case DragEvent.ACTION_DRAG_STARTED: { 2079 // Validate this drag 2080 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2081 if (test != null) { 2082 boolean isShortcut = (test.second == null); 2083 if (isShortcut) { 2084 // Check if we have enough space on this screen to add a new shortcut 2085 if (!layout.findCellForSpan(pos, 1, 1)) { 2086 Toast.makeText(mContext, mContext.getString(R.string.out_of_space), 2087 Toast.LENGTH_SHORT).show(); 2088 return false; 2089 } 2090 } 2091 } else { 2092 // Show error message if we couldn't accept any of the items 2093 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 2094 Toast.LENGTH_SHORT).show(); 2095 return false; 2096 } 2097 2098 // Create the drag outline 2099 // We need to add extra padding to the bitmap to make room for the glow effect 2100 final Canvas canvas = new Canvas(); 2101 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2102 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 2103 2104 // Show the current page outlines to indicate that we can accept this drop 2105 showOutlines(); 2106 layout.setIsDragOccuring(true); 2107 layout.onDragEnter(); 2108 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2109 2110 return true; 2111 } 2112 case DragEvent.ACTION_DRAG_LOCATION: 2113 // Visualize the drop location 2114 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2115 return true; 2116 case DragEvent.ACTION_DROP: { 2117 // Try and add any shortcuts 2118 final LauncherModel model = mLauncher.getModel(); 2119 final ClipData data = event.getClipData(); 2120 2121 // We assume that the mime types are ordered in descending importance of 2122 // representation. So we enumerate the list of mime types and alert the 2123 // user if any widgets can handle the drop. Only the most preferred 2124 // representation will be handled. 2125 pos[0] = x; 2126 pos[1] = y; 2127 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2128 if (test != null) { 2129 final int index = test.first; 2130 final List<WidgetMimeTypeHandlerData> widgets = test.second; 2131 final boolean isShortcut = (widgets == null); 2132 final String mimeType = desc.getMimeType(index); 2133 if (isShortcut) { 2134 final Intent intent = data.getItemAt(index).getIntent(); 2135 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 2136 onDropExternal(x, y, info, layout, false); 2137 } else { 2138 if (widgets.size() == 1) { 2139 // If there is only one item, then go ahead and add and configure 2140 // that widget 2141 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 2142 final PendingAddWidgetInfo createInfo = 2143 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 2144 mLauncher.addAppWidgetFromDrop(createInfo, mCurrentPage, pos); 2145 } else { 2146 // Show the widget picker dialog if there is more than one widget 2147 // that can handle this data type 2148 final InstallWidgetReceiver.WidgetListAdapter adapter = 2149 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 2150 data, widgets, layout, mCurrentPage, pos); 2151 final AlertDialog.Builder builder = 2152 new AlertDialog.Builder(mContext); 2153 builder.setAdapter(adapter, adapter); 2154 builder.setCancelable(true); 2155 builder.setTitle(mContext.getString( 2156 R.string.external_drop_widget_pick_title)); 2157 builder.setIcon(R.drawable.ic_no_applications); 2158 builder.show(); 2159 } 2160 } 2161 } 2162 return true; 2163 } 2164 case DragEvent.ACTION_DRAG_ENDED: 2165 // Hide the page outlines after the drop 2166 layout.setIsDragOccuring(false); 2167 layout.onDragExit(); 2168 hideOutlines(); 2169 return true; 2170 } 2171 return super.onDragEvent(event); 2172 } 2173 2174 /* 2175 * 2176 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2177 * coordinate space. The argument xy is modified with the return result. 2178 * 2179 */ 2180 void mapPointFromSelfToChild(View v, float[] xy) { 2181 mapPointFromSelfToChild(v, xy, null); 2182 } 2183 2184 /* 2185 * 2186 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2187 * coordinate space. The argument xy is modified with the return result. 2188 * 2189 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2190 * computing it itself; we use this to avoid redundant matrix inversions in 2191 * findMatchingPageForDragOver 2192 * 2193 */ 2194 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2195 if (cachedInverseMatrix == null) { 2196 v.getMatrix().invert(mTempInverseMatrix); 2197 cachedInverseMatrix = mTempInverseMatrix; 2198 } 2199 xy[0] = xy[0] + mScrollX - v.getLeft(); 2200 xy[1] = xy[1] + mScrollY - v.getTop(); 2201 cachedInverseMatrix.mapPoints(xy); 2202 } 2203 2204 /* 2205 * 2206 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2207 * the parent View's coordinate space. The argument xy is modified with the return result. 2208 * 2209 */ 2210 void mapPointFromChildToSelf(View v, float[] xy) { 2211 v.getMatrix().mapPoints(xy); 2212 xy[0] -= (mScrollX - v.getLeft()); 2213 xy[1] -= (mScrollY - v.getTop()); 2214 } 2215 2216 static private float squaredDistance(float[] point1, float[] point2) { 2217 float distanceX = point1[0] - point2[0]; 2218 float distanceY = point2[1] - point2[1]; 2219 return distanceX * distanceX + distanceY * distanceY; 2220 } 2221 2222 /* 2223 * 2224 * Returns true if the passed CellLayout cl overlaps with dragView 2225 * 2226 */ 2227 boolean overlaps(CellLayout cl, DragView dragView, 2228 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2229 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2230 final float[] draggedItemTopLeft = mTempDragCoordinates; 2231 draggedItemTopLeft[0] = dragViewX + dragView.getScaledDragRegionXOffset(); 2232 draggedItemTopLeft[1] = dragViewY + dragView.getScaledDragRegionYOffset(); 2233 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2234 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getScaledDragRegionWidth(); 2235 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getScaledDragRegionHeight(); 2236 2237 // Transform the dragged item's top left coordinates 2238 // to the CellLayout's local coordinates 2239 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2240 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2241 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2242 2243 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2244 // Transform the dragged item's bottom right coordinates 2245 // to the CellLayout's local coordinates 2246 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2247 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2248 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2249 2250 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2251 float overlap = (overlapRegionRight - overlapRegionLeft) * 2252 (overlapRegionBottom - overlapRegionTop); 2253 if (overlap > 0) { 2254 return true; 2255 } 2256 } 2257 } 2258 return false; 2259 } 2260 2261 /* 2262 * 2263 * This method returns the CellLayout that is currently being dragged to. In order to drag 2264 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2265 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2266 * 2267 * Return null if no CellLayout is currently being dragged over 2268 * 2269 */ 2270 private CellLayout findMatchingPageForDragOver( 2271 DragView dragView, int originX, int originY, int offsetX, int offsetY) { 2272 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2273 // with the item being dragged and then choose the one that's closest to the touch point 2274 final int screenCount = getChildCount(); 2275 CellLayout bestMatchingScreen = null; 2276 float smallestDistSoFar = Float.MAX_VALUE; 2277 2278 for (int i = 0; i < screenCount; i++) { 2279 CellLayout cl = (CellLayout)getChildAt(i); 2280 2281 final float[] touchXy = mTempTouchCoordinates; 2282 touchXy[0] = originX + offsetX; 2283 touchXy[1] = originY + offsetY; 2284 2285 // Transform the touch coordinates to the CellLayout's local coordinates 2286 // If the touch point is within the bounds of the cell layout, we can return immediately 2287 cl.getMatrix().invert(mTempInverseMatrix); 2288 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2289 2290 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2291 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2292 return cl; 2293 } 2294 2295 if (overlaps(cl, dragView, originX, originY, mTempInverseMatrix)) { 2296 // Get the center of the cell layout in screen coordinates 2297 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2298 cellLayoutCenter[0] = cl.getWidth()/2; 2299 cellLayoutCenter[1] = cl.getHeight()/2; 2300 mapPointFromChildToSelf(cl, cellLayoutCenter); 2301 2302 touchXy[0] = originX + offsetX; 2303 touchXy[1] = originY + offsetY; 2304 2305 // Calculate the distance between the center of the CellLayout 2306 // and the touch point 2307 float dist = squaredDistance(touchXy, cellLayoutCenter); 2308 2309 if (dist < smallestDistSoFar) { 2310 smallestDistSoFar = dist; 2311 bestMatchingScreen = cl; 2312 } 2313 } 2314 } 2315 return bestMatchingScreen; 2316 } 2317 2318 public void onDragOver(DragSource source, int x, int y, int xOffset, int yOffset, 2319 DragView dragView, Object dragInfo) { 2320 // When touch is inside the scroll area, skip dragOver actions for the current screen 2321 if (!mInScrollArea) { 2322 CellLayout layout; 2323 int originX = x - xOffset; 2324 int originY = y - yOffset; 2325 boolean shrunken = mIsSmall || mIsInUnshrinkAnimation; 2326 if (shrunken) { 2327 layout = findMatchingPageForDragOver( 2328 dragView, originX, originY, xOffset, yOffset); 2329 2330 if (layout != mDragTargetLayout) { 2331 if (mDragTargetLayout != null) { 2332 mDragTargetLayout.setIsDragOverlapping(false); 2333 mSpringLoadedDragController.onDragExit(); 2334 } 2335 mDragTargetLayout = layout; 2336 if (mDragTargetLayout != null && mDragTargetLayout.getAcceptsDrops()) { 2337 mDragTargetLayout.setIsDragOverlapping(true); 2338 mSpringLoadedDragController.onDragEnter(mDragTargetLayout); 2339 } 2340 } 2341 } else { 2342 layout = getCurrentDropLayout(); 2343 if (layout != mDragTargetLayout) { 2344 if (mDragTargetLayout != null) { 2345 mDragTargetLayout.onDragExit(); 2346 } 2347 layout.onDragEnter(); 2348 mDragTargetLayout = layout; 2349 } 2350 } 2351 if (!shrunken || mShrinkState == ShrinkState.SPRING_LOADED) { 2352 layout = getCurrentDropLayout(); 2353 2354 final ItemInfo item = (ItemInfo)dragInfo; 2355 if (dragInfo instanceof LauncherAppWidgetInfo) { 2356 LauncherAppWidgetInfo widgetInfo = (LauncherAppWidgetInfo)dragInfo; 2357 2358 if (widgetInfo.spanX == -1) { 2359 // Calculate the grid spans needed to fit this widget 2360 int[] spans = layout.rectToCell( 2361 widgetInfo.minWidth, widgetInfo.minHeight, null); 2362 item.spanX = spans[0]; 2363 item.spanY = spans[1]; 2364 } 2365 } 2366 2367 if (source instanceof AllAppsPagedView) { 2368 // This is a hack to fix the point used to determine which cell an icon from 2369 // the all apps screen is over 2370 if (item != null && item.spanX == 1 && layout != null) { 2371 int dragRegionLeft = (dragView.getWidth() - layout.getCellWidth()) / 2; 2372 2373 originX += dragRegionLeft - dragView.getDragRegionLeft(); 2374 if (dragView.getDragRegionWidth() != layout.getCellWidth()) { 2375 dragView.setDragRegion(dragView.getDragRegionLeft(), 2376 dragView.getDragRegionTop(), 2377 layout.getCellWidth(), 2378 dragView.getDragRegionHeight()); 2379 } 2380 } 2381 } else if (source == this) { 2382 // When dragging from the workspace, the drag view is slightly bigger than 2383 // the original view, and offset vertically. Adjust to account for this. 2384 final View origView = mDragInfo.cell; 2385 originX += (dragView.getMeasuredWidth() - origView.getWidth()) / 2; 2386 originY += (dragView.getMeasuredHeight() - origView.getHeight()) / 2 2387 + dragView.getOffsetY(); 2388 } 2389 2390 if (mDragTargetLayout != null) { 2391 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2392 float[] localOrigin = { originX, originY }; 2393 mapPointFromSelfToChild(mDragTargetLayout, localOrigin, null); 2394 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2395 (int) localOrigin[0], (int) localOrigin[1], item.spanX, item.spanY); 2396 } 2397 } 2398 } 2399 } 2400 2401 private void doDragExit() { 2402 mWasSpringLoadedOnDragExit = mShrinkState == ShrinkState.SPRING_LOADED; 2403 if (mDragTargetLayout != null) { 2404 mDragTargetLayout.onDragExit(); 2405 } 2406 if (!mIsPageMoving) { 2407 hideOutlines(); 2408 } 2409 if (mShrinkState == ShrinkState.SPRING_LOADED) { 2410 mLauncher.exitSpringLoadedDragMode(); 2411 } 2412 clearAllHovers(); 2413 } 2414 2415 public void onDragExit(DragSource source, int x, int y, int xOffset, 2416 int yOffset, DragView dragView, Object dragInfo) { 2417 doDragExit(); 2418 } 2419 2420 @Override 2421 public void getHitRect(Rect outRect) { 2422 // We want the workspace to have the whole area of the display (it will find the correct 2423 // cell layout to drop to in the existing drag/drop logic. 2424 final Display d = mLauncher.getWindowManager().getDefaultDisplay(); 2425 outRect.set(0, 0, d.getWidth(), d.getHeight()); 2426 } 2427 2428 /** 2429 * Add the item specified by dragInfo to the given layout. 2430 * @return true if successful 2431 */ 2432 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2433 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2434 onDropExternal(-1, -1, (ItemInfo) dragInfo, (CellLayout) layout, false); 2435 return true; 2436 } 2437 mLauncher.showOutOfSpaceMessage(); 2438 return false; 2439 } 2440 2441 /** 2442 * Drop an item that didn't originate on one of the workspace screens. 2443 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2444 * come from another app altogether. 2445 * 2446 * NOTE: This can also be called when we are outside of a drag event, when we want 2447 * to add an item to one of the workspace screens. 2448 */ 2449 private void onDropExternal(int x, int y, Object dragInfo, 2450 CellLayout cellLayout, boolean insertAtFirst) { 2451 int screen = indexOfChild(cellLayout); 2452 if (dragInfo instanceof PendingAddItemInfo) { 2453 PendingAddItemInfo info = (PendingAddItemInfo) dragInfo; 2454 // When dragging and dropping from customization tray, we deal with creating 2455 // widgets/shortcuts/folders in a slightly different way 2456 // Only set touchXY if you are supporting spring loaded adding of items 2457 int[] touchXY = new int[2]; 2458 touchXY[0] = x; 2459 touchXY[1] = y; 2460 switch (info.itemType) { 2461 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 2462 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) info, screen, touchXY); 2463 break; 2464 case LauncherSettings.Favorites.ITEM_TYPE_LIVE_FOLDER: 2465 mLauncher.addLiveFolderFromDrop(info.componentName, screen, touchXY); 2466 break; 2467 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2468 mLauncher.processShortcutFromDrop(info.componentName, screen, touchXY); 2469 break; 2470 default: 2471 throw new IllegalStateException("Unknown item type: " + info.itemType); 2472 } 2473 cellLayout.onDragExit(); 2474 } else { 2475 // This is for other drag/drop cases, like dragging from All Apps 2476 ItemInfo info = (ItemInfo) dragInfo; 2477 View view = null; 2478 2479 switch (info.itemType) { 2480 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 2481 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2482 if (info.container == NO_ID && info instanceof ApplicationInfo) { 2483 // Came from all apps -- make a copy 2484 info = new ShortcutInfo((ApplicationInfo) info); 2485 } 2486 view = mLauncher.createShortcut(R.layout.application, cellLayout, 2487 (ShortcutInfo) info); 2488 break; 2489 case LauncherSettings.Favorites.ITEM_TYPE_USER_FOLDER: 2490 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, 2491 cellLayout, (UserFolderInfo) info, mIconCache); 2492 break; 2493 default: 2494 throw new IllegalStateException("Unknown item type: " + info.itemType); 2495 } 2496 2497 mTargetCell = new int[2]; 2498 if (x != -1 && y != -1) { 2499 // when dragging and dropping, just find the closest free spot 2500 cellLayout.findNearestVacantArea(x, y, 1, 1, mTargetCell); 2501 } else { 2502 cellLayout.findCellForSpan(mTargetCell, 1, 1); 2503 } 2504 addInScreen(view, indexOfChild(cellLayout), mTargetCell[0], 2505 mTargetCell[1], info.spanX, info.spanY, insertAtFirst); 2506 boolean animateDrop = !mWasSpringLoadedOnDragExit; 2507 cellLayout.onDropChild(view, animateDrop); 2508 cellLayout.animateDrop(); 2509 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2510 2511 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 2512 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2513 lp.cellX, lp.cellY); 2514 } 2515 } 2516 2517 /** 2518 * Return the current {@link CellLayout}, correctly picking the destination 2519 * screen while a scroll is in progress. 2520 */ 2521 private CellLayout getCurrentDropLayout() { 2522 // if we're currently small, use findMatchingPageForDragOver instead 2523 if (mIsSmall) return null; 2524 int index = mScroller.isFinished() ? mCurrentPage : mNextPage; 2525 return (CellLayout) getChildAt(index); 2526 } 2527 2528 /** 2529 * Return the current CellInfo describing our current drag; this method exists 2530 * so that Launcher can sync this object with the correct info when the activity is created/ 2531 * destroyed 2532 * 2533 */ 2534 public CellLayout.CellInfo getDragInfo() { 2535 return mDragInfo; 2536 } 2537 2538 /** 2539 * Calculate the nearest cell where the given object would be dropped. 2540 */ 2541 private int[] findNearestVacantArea(int pixelX, int pixelY, 2542 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 2543 2544 int localPixelX = pixelX - (layout.getLeft() - mScrollX); 2545 int localPixelY = pixelY - (layout.getTop() - mScrollY); 2546 2547 // Find the best target drop location 2548 return layout.findNearestVacantArea( 2549 localPixelX, localPixelY, spanX, spanY, ignoreView, recycle); 2550 } 2551 2552 void setLauncher(Launcher launcher) { 2553 mLauncher = launcher; 2554 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 2555 2556 mCustomizationDrawer = mLauncher.findViewById(R.id.customization_drawer); 2557 if (mCustomizationDrawer != null) { 2558 mCustomizationDrawerContent = 2559 mCustomizationDrawer.findViewById(com.android.internal.R.id.tabcontent); 2560 } 2561 } 2562 2563 public void setDragController(DragController dragController) { 2564 mDragController = dragController; 2565 } 2566 2567 /** 2568 * Called at the end of a drag which originated on the workspace. 2569 */ 2570 public void onDropCompleted(View target, boolean success) { 2571 if (success) { 2572 if (target != this && mDragInfo != null) { 2573 final CellLayout cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 2574 cellLayout.removeView(mDragInfo.cell); 2575 if (mDragInfo.cell instanceof DropTarget) { 2576 mDragController.removeDropTarget((DropTarget)mDragInfo.cell); 2577 } 2578 // final Object tag = mDragInfo.cell.getTag(); 2579 } 2580 } else if (mDragInfo != null) { 2581 // NOTE: When 'success' is true, onDragExit is called by the DragController before 2582 // calling onDropCompleted(). We call it ourselves here, but maybe this should be 2583 // moved into DragController.cancelDrag(). 2584 doDragExit(); 2585 ((CellLayout) getChildAt(mDragInfo.screen)).onDropChild(mDragInfo.cell, false); 2586 } 2587 mLauncher.unlockScreenOrientation(); 2588 mDragOutline = null; 2589 mDragInfo = null; 2590 } 2591 2592 @Override 2593 public void onDragViewVisible() { 2594 ((View) mDragInfo.cell).setVisibility(View.GONE); 2595 } 2596 2597 public boolean isDropEnabled() { 2598 return true; 2599 } 2600 2601 @Override 2602 protected void onRestoreInstanceState(Parcelable state) { 2603 super.onRestoreInstanceState(state); 2604 Launcher.setScreen(mCurrentPage); 2605 } 2606 2607 @Override 2608 public void scrollLeft() { 2609 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2610 super.scrollLeft(); 2611 } 2612 } 2613 2614 @Override 2615 public void scrollRight() { 2616 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2617 super.scrollRight(); 2618 } 2619 } 2620 2621 @Override 2622 public void onEnterScrollArea(int direction) { 2623 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2624 mInScrollArea = true; 2625 mPendingScrollDirection = direction; 2626 2627 final int page = mCurrentPage + (direction == DragController.SCROLL_LEFT ? -1 : 1); 2628 final CellLayout layout = (CellLayout) getChildAt(page); 2629 2630 if (layout != null) { 2631 layout.setIsDragOverlapping(true); 2632 2633 if (mDragTargetLayout != null) { 2634 mDragTargetLayout.onDragExit(); 2635 mDragTargetLayout = null; 2636 } 2637 } 2638 } 2639 } 2640 2641 private void clearAllHovers() { 2642 final int childCount = getChildCount(); 2643 for (int i = 0; i < childCount; i++) { 2644 ((CellLayout) getChildAt(i)).setIsDragOverlapping(false); 2645 } 2646 mSpringLoadedDragController.onDragExit(); 2647 } 2648 2649 @Override 2650 public void onExitScrollArea() { 2651 if (mInScrollArea) { 2652 mInScrollArea = false; 2653 mPendingScrollDirection = DragController.SCROLL_NONE; 2654 clearAllHovers(); 2655 } 2656 } 2657 2658 public Folder getFolderForTag(Object tag) { 2659 final int screenCount = getChildCount(); 2660 for (int screen = 0; screen < screenCount; screen++) { 2661 CellLayout currentScreen = ((CellLayout) getChildAt(screen)); 2662 int count = currentScreen.getChildCount(); 2663 for (int i = 0; i < count; i++) { 2664 View child = currentScreen.getChildAt(i); 2665 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 2666 if (lp.cellHSpan == 4 && lp.cellVSpan == 4 && child instanceof Folder) { 2667 Folder f = (Folder) child; 2668 if (f.getInfo() == tag && f.getInfo().opened) { 2669 return f; 2670 } 2671 } 2672 } 2673 } 2674 return null; 2675 } 2676 2677 public View getViewForTag(Object tag) { 2678 int screenCount = getChildCount(); 2679 for (int screen = 0; screen < screenCount; screen++) { 2680 CellLayout currentScreen = ((CellLayout) getChildAt(screen)); 2681 int count = currentScreen.getChildCount(); 2682 for (int i = 0; i < count; i++) { 2683 View child = currentScreen.getChildAt(i); 2684 if (child.getTag() == tag) { 2685 return child; 2686 } 2687 } 2688 } 2689 return null; 2690 } 2691 2692 2693 void removeItems(final ArrayList<ApplicationInfo> apps) { 2694 final int screenCount = getChildCount(); 2695 final PackageManager manager = getContext().getPackageManager(); 2696 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 2697 2698 final HashSet<String> packageNames = new HashSet<String>(); 2699 final int appCount = apps.size(); 2700 for (int i = 0; i < appCount; i++) { 2701 packageNames.add(apps.get(i).componentName.getPackageName()); 2702 } 2703 2704 for (int i = 0; i < screenCount; i++) { 2705 final CellLayout layout = (CellLayout) getChildAt(i); 2706 2707 // Avoid ANRs by treating each screen separately 2708 post(new Runnable() { 2709 public void run() { 2710 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 2711 childrenToRemove.clear(); 2712 2713 int childCount = layout.getChildCount(); 2714 for (int j = 0; j < childCount; j++) { 2715 final View view = layout.getChildAt(j); 2716 Object tag = view.getTag(); 2717 2718 if (tag instanceof ShortcutInfo) { 2719 final ShortcutInfo info = (ShortcutInfo) tag; 2720 final Intent intent = info.intent; 2721 final ComponentName name = intent.getComponent(); 2722 2723 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 2724 for (String packageName: packageNames) { 2725 if (packageName.equals(name.getPackageName())) { 2726 LauncherModel.deleteItemFromDatabase(mLauncher, info); 2727 childrenToRemove.add(view); 2728 } 2729 } 2730 } 2731 } else if (tag instanceof UserFolderInfo) { 2732 final UserFolderInfo info = (UserFolderInfo) tag; 2733 final ArrayList<ShortcutInfo> contents = info.contents; 2734 final ArrayList<ShortcutInfo> toRemove = new ArrayList<ShortcutInfo>(1); 2735 final int contentsCount = contents.size(); 2736 boolean removedFromFolder = false; 2737 2738 for (int k = 0; k < contentsCount; k++) { 2739 final ShortcutInfo appInfo = contents.get(k); 2740 final Intent intent = appInfo.intent; 2741 final ComponentName name = intent.getComponent(); 2742 2743 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 2744 for (String packageName: packageNames) { 2745 if (packageName.equals(name.getPackageName())) { 2746 toRemove.add(appInfo); 2747 LauncherModel.deleteItemFromDatabase(mLauncher, appInfo); 2748 removedFromFolder = true; 2749 } 2750 } 2751 } 2752 } 2753 2754 contents.removeAll(toRemove); 2755 if (removedFromFolder) { 2756 final Folder folder = getOpenFolder(); 2757 if (folder != null) 2758 folder.notifyDataSetChanged(); 2759 } 2760 } else if (tag instanceof LiveFolderInfo) { 2761 final LiveFolderInfo info = (LiveFolderInfo) tag; 2762 final Uri uri = info.uri; 2763 final ProviderInfo providerInfo = manager.resolveContentProvider( 2764 uri.getAuthority(), 0); 2765 2766 if (providerInfo != null) { 2767 for (String packageName: packageNames) { 2768 if (packageName.equals(providerInfo.packageName)) { 2769 LauncherModel.deleteItemFromDatabase(mLauncher, info); 2770 childrenToRemove.add(view); 2771 } 2772 } 2773 } 2774 } else if (tag instanceof LauncherAppWidgetInfo) { 2775 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 2776 final AppWidgetProviderInfo provider = 2777 widgets.getAppWidgetInfo(info.appWidgetId); 2778 if (provider != null) { 2779 for (String packageName: packageNames) { 2780 if (packageName.equals(provider.provider.getPackageName())) { 2781 LauncherModel.deleteItemFromDatabase(mLauncher, info); 2782 childrenToRemove.add(view); 2783 } 2784 } 2785 } 2786 } 2787 } 2788 2789 childCount = childrenToRemove.size(); 2790 for (int j = 0; j < childCount; j++) { 2791 View child = childrenToRemove.get(j); 2792 layout.removeViewInLayout(child); 2793 if (child instanceof DropTarget) { 2794 mDragController.removeDropTarget((DropTarget)child); 2795 } 2796 } 2797 2798 if (childCount > 0) { 2799 layout.requestLayout(); 2800 layout.invalidate(); 2801 } 2802 } 2803 }); 2804 } 2805 } 2806 2807 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 2808 final int screenCount = getChildCount(); 2809 for (int i = 0; i < screenCount; i++) { 2810 final CellLayout layout = (CellLayout) getChildAt(i); 2811 int childCount = layout.getChildCount(); 2812 for (int j = 0; j < childCount; j++) { 2813 final View view = layout.getChildAt(j); 2814 Object tag = view.getTag(); 2815 if (tag instanceof ShortcutInfo) { 2816 ShortcutInfo info = (ShortcutInfo)tag; 2817 // We need to check for ACTION_MAIN otherwise getComponent() might 2818 // return null for some shortcuts (for instance, for shortcuts to 2819 // web pages.) 2820 final Intent intent = info.intent; 2821 final ComponentName name = intent.getComponent(); 2822 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 2823 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 2824 final int appCount = apps.size(); 2825 for (int k = 0; k < appCount; k++) { 2826 ApplicationInfo app = apps.get(k); 2827 if (app.componentName.equals(name)) { 2828 info.setIcon(mIconCache.getIcon(info.intent)); 2829 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 2830 new FastBitmapDrawable(info.getIcon(mIconCache)), 2831 null, null); 2832 } 2833 } 2834 } 2835 } 2836 } 2837 } 2838 } 2839 2840 void moveToDefaultScreen(boolean animate) { 2841 if (mIsSmall || mIsInUnshrinkAnimation) { 2842 mLauncher.showWorkspace(animate, (CellLayout)getChildAt(mDefaultPage)); 2843 } else if (animate) { 2844 snapToPage(mDefaultPage); 2845 } else { 2846 setCurrentPage(mDefaultPage); 2847 } 2848 getChildAt(mDefaultPage).requestFocus(); 2849 } 2850 2851 void setIndicators(Drawable previous, Drawable next) { 2852 mPreviousIndicator = previous; 2853 mNextIndicator = next; 2854 previous.setLevel(mCurrentPage); 2855 next.setLevel(mCurrentPage); 2856 } 2857 2858 @Override 2859 public void syncPages() { 2860 } 2861 2862 @Override 2863 public void syncPageItems(int page) { 2864 } 2865 2866} 2867