Workspace.java revision 6e3140865d3f0def2e55934d8b0b2c1503386e54
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.ViewGroup; 64import android.view.animation.DecelerateInterpolator; 65import android.widget.TextView; 66import android.widget.Toast; 67 68import java.util.ArrayList; 69import java.util.HashSet; 70import java.util.List; 71 72/** 73 * The workspace is a wide area with a wallpaper and a finite number of pages. 74 * Each page contains a number of icons, folders or widgets the user can 75 * interact with. A workspace is meant to be used with a fixed width only. 76 */ 77public class Workspace extends SmoothPagedView 78 implements DropTarget, DragSource, DragScroller, View.OnTouchListener { 79 @SuppressWarnings({"UnusedDeclaration"}) 80 private static final String TAG = "Launcher.Workspace"; 81 82 // This is how much the workspace shrinks when we enter all apps or 83 // customization mode 84 private static final float SHRINK_FACTOR = 0.16f; 85 86 // How much the screens shrink when we enter spring loaded drag mode 87 private static final float SPRING_LOADED_DRAG_SHRINK_FACTOR = 0.7f; 88 89 // Y rotation to apply to the workspace screens 90 private static final float WORKSPACE_ROTATION = 12.5f; 91 92 // These are extra scale factors to apply to the mini home screens 93 // so as to achieve the desired transform 94 private static final float EXTRA_SCALE_FACTOR_0 = 0.972f; 95 private static final float EXTRA_SCALE_FACTOR_1 = 1.0f; 96 private static final float EXTRA_SCALE_FACTOR_2 = 1.10f; 97 98 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 99 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 100 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 101 102 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 103 private static final int BACKGROUND_FADE_IN_DURATION = 350; 104 105 // These animators are used to fade the children's outlines 106 private ObjectAnimator mChildrenOutlineFadeInAnimation; 107 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 108 private float mChildrenOutlineAlpha = 0; 109 110 // These properties refer to the background protection gradient used for AllApps and Customize 111 private ObjectAnimator mBackgroundFadeInAnimation; 112 private ObjectAnimator mBackgroundFadeOutAnimation; 113 private Drawable mBackground; 114 private Drawable mCustomizeTrayBackground; 115 private boolean mDrawCustomizeTrayBackground; 116 private float mBackgroundAlpha = 0; 117 private float mOverScrollMaxBackgroundAlpha = 0.0f; 118 private int mOverScrollPageIndex = -1; 119 120 private View mCustomizationDrawer; 121 private View mCustomizationDrawerContent; 122 private int[] mCustomizationDrawerPos = new int[2]; 123 private float[] mCustomizationDrawerTransformedPos = new float[2]; 124 125 private final WallpaperManager mWallpaperManager; 126 127 private int mDefaultPage; 128 129 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 // info about the last drag 214 private DragView mLastDragView; 215 private int mLastDragOriginX; 216 private int mLastDragOriginY; 217 private int mLastDragXOffset; 218 private int mLastDragYOffset; 219 220 /** 221 * Used to inflate the Workspace from XML. 222 * 223 * @param context The application's context. 224 * @param attrs The attributes set containing the Workspace's customization values. 225 */ 226 public Workspace(Context context, AttributeSet attrs) { 227 this(context, attrs, 0); 228 } 229 230 /** 231 * Used to inflate the Workspace from XML. 232 * 233 * @param context The application's context. 234 * @param attrs The attributes set containing the Workspace's customization values. 235 * @param defStyle Unused. 236 */ 237 public Workspace(Context context, AttributeSet attrs, int defStyle) { 238 super(context, attrs, defStyle); 239 mContentIsRefreshable = false; 240 241 if (!LauncherApplication.isScreenXLarge()) { 242 mFadeInAdjacentScreens = false; 243 } 244 245 mWallpaperManager = WallpaperManager.getInstance(context); 246 247 TypedArray a = context.obtainStyledAttributes(attrs, 248 R.styleable.Workspace, defStyle, 0); 249 int cellCountX = a.getInt(R.styleable.Workspace_cellCountX, DEFAULT_CELL_COUNT_X); 250 int cellCountY = a.getInt(R.styleable.Workspace_cellCountY, DEFAULT_CELL_COUNT_Y); 251 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 252 a.recycle(); 253 254 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 255 setHapticFeedbackEnabled(false); 256 257 initWorkspace(); 258 } 259 260 /** 261 * Initializes various states for this workspace. 262 */ 263 protected void initWorkspace() { 264 Context context = getContext(); 265 mCurrentPage = mDefaultPage; 266 Launcher.setScreen(mCurrentPage); 267 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 268 mIconCache = app.getIconCache(); 269 mExternalDragOutlinePaint.setAntiAlias(true); 270 setWillNotDraw(false); 271 272 try { 273 final Resources res = getResources(); 274 mBackground = res.getDrawable(R.drawable.all_apps_bg_gradient); 275 mCustomizeTrayBackground = res.getDrawable(R.drawable.customize_bg_gradient); 276 } catch (Resources.NotFoundException e) { 277 // In this case, we will skip drawing background protection 278 } 279 280 mUnshrinkAnimationListener = new AnimatorListenerAdapter() { 281 @Override 282 public void onAnimationStart(Animator animation) { 283 mIsInUnshrinkAnimation = true; 284 disableCacheUpdates(); 285 } 286 287 @Override 288 public void onAnimationEnd(Animator animation) { 289 mIsInUnshrinkAnimation = false; 290 mSyncWallpaperOffsetWithScroll = true; 291 if (mShrinkState == ShrinkState.SPRING_LOADED) { 292 View layout = null; 293 if (mLastDragView != null) { 294 layout = findMatchingPageForDragOver(mLastDragView, mLastDragOriginX, 295 mLastDragOriginY, mLastDragXOffset, mLastDragYOffset); 296 } 297 mSpringLoadedDragController.onEnterSpringLoadedMode(layout == null); 298 } else { 299 mDrawCustomizeTrayBackground = false; 300 } 301 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 302 enableCacheUpdates(); 303 mAnimator = null; 304 } 305 }; 306 mShrinkAnimationListener = new AnimatorListenerAdapter() { 307 @Override 308 public void onAnimationStart(Animator animation) { 309 disableCacheUpdates(); 310 } 311 @Override 312 public void onAnimationEnd(Animator animation) { 313 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 314 enableCacheUpdates(); 315 mAnimator = null; 316 } 317 }; 318 mSnapVelocity = 600; 319 mWallpaperOffset = new WallpaperOffsetInterpolator(); 320 } 321 322 @Override 323 protected int getScrollMode() { 324 if (LauncherApplication.isScreenXLarge()) { 325 return SmoothPagedView.X_LARGE_MODE; 326 } else { 327 return SmoothPagedView.DEFAULT_MODE; 328 } 329 } 330 331 @Override 332 public void addView(View child, int index, LayoutParams params) { 333 if (!(child instanceof CellLayout)) { 334 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 335 } 336 ((CellLayout) child).setOnInterceptTouchListener(this); 337 super.addView(child, index, params); 338 } 339 340 @Override 341 public void addView(View child) { 342 if (!(child instanceof CellLayout)) { 343 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 344 } 345 ((CellLayout) child).setOnInterceptTouchListener(this); 346 super.addView(child); 347 } 348 349 @Override 350 public void addView(View child, int index) { 351 if (!(child instanceof CellLayout)) { 352 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 353 } 354 ((CellLayout) child).setOnInterceptTouchListener(this); 355 super.addView(child, index); 356 } 357 358 @Override 359 public void addView(View child, int width, int height) { 360 if (!(child instanceof CellLayout)) { 361 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 362 } 363 ((CellLayout) child).setOnInterceptTouchListener(this); 364 super.addView(child, width, height); 365 } 366 367 @Override 368 public void addView(View child, LayoutParams params) { 369 if (!(child instanceof CellLayout)) { 370 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 371 } 372 ((CellLayout) child).setOnInterceptTouchListener(this); 373 super.addView(child, params); 374 } 375 376 /** 377 * @return The open folder on the current screen, or null if there is none 378 */ 379 Folder getOpenFolder() { 380 ViewGroup currentPage = ((CellLayout) getChildAt(mCurrentPage)).getChildrenLayout(); 381 int count = currentPage.getChildCount(); 382 for (int i = 0; i < count; i++) { 383 View child = currentPage.getChildAt(i); 384 if (child instanceof Folder) { 385 Folder folder = (Folder) child; 386 if (folder.getInfo().opened) 387 return folder; 388 } 389 } 390 return null; 391 } 392 393 ArrayList<Folder> getOpenFolders() { 394 final int screenCount = getChildCount(); 395 ArrayList<Folder> folders = new ArrayList<Folder>(screenCount); 396 397 for (int screen = 0; screen < screenCount; screen++) { 398 ViewGroup currentPage = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 399 int count = currentPage.getChildCount(); 400 for (int i = 0; i < count; i++) { 401 View child = currentPage.getChildAt(i); 402 if (child instanceof Folder) { 403 Folder folder = (Folder) child; 404 if (folder.getInfo().opened) 405 folders.add(folder); 406 break; 407 } 408 } 409 } 410 return folders; 411 } 412 413 boolean isDefaultPageShowing() { 414 return mCurrentPage == mDefaultPage; 415 } 416 417 /** 418 * Adds the specified child in the specified screen. The position and dimension of 419 * the child are defined by x, y, spanX and spanY. 420 * 421 * @param child The child to add in one of the workspace's screens. 422 * @param screen The screen in which to add the child. 423 * @param x The X position of the child in the screen's grid. 424 * @param y The Y position of the child in the screen's grid. 425 * @param spanX The number of cells spanned horizontally by the child. 426 * @param spanY The number of cells spanned vertically by the child. 427 */ 428 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY) { 429 addInScreen(child, screen, x, y, spanX, spanY, false); 430 } 431 432 void addInFullScreen(View child, int screen) { 433 addInScreen(child, screen, 0, 0, -1, -1); 434 } 435 436 /** 437 * Adds the specified child in the specified screen. The position and dimension of 438 * the child are defined by x, y, spanX and spanY. 439 * 440 * @param child The child to add in one of the workspace's screens. 441 * @param screen The screen in which to add the child. 442 * @param x The X position of the child in the screen's grid. 443 * @param y The Y position of the child in the screen's grid. 444 * @param spanX The number of cells spanned horizontally by the child. 445 * @param spanY The number of cells spanned vertically by the child. 446 * @param insert When true, the child is inserted at the beginning of the children list. 447 */ 448 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY, boolean insert) { 449 if (screen < 0 || screen >= getChildCount()) { 450 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 451 + " (was " + screen + "); skipping child"); 452 return; 453 } 454 455 final CellLayout group = (CellLayout) getChildAt(screen); 456 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 457 if (lp == null) { 458 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 459 } else { 460 lp.cellX = x; 461 lp.cellY = y; 462 lp.cellHSpan = spanX; 463 lp.cellVSpan = spanY; 464 } 465 466 // Get the canonical child id to uniquely represent this view in this screen 467 int childId = LauncherModel.getCellLayoutChildId(-1, screen, x, y, spanX, spanY); 468 boolean markCellsAsOccupied = !(child instanceof Folder); 469 if (!group.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 470 // TODO: This branch occurs when the workspace is adding views 471 // outside of the defined grid 472 // maybe we should be deleting these items from the LauncherModel? 473 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 474 } 475 476 if (!(child instanceof Folder)) { 477 child.setHapticFeedbackEnabled(false); 478 child.setOnLongClickListener(mLongClickListener); 479 } 480 if (child instanceof DropTarget) { 481 mDragController.addDropTarget((DropTarget) child); 482 } 483 } 484 485 /** 486 * Check if the point (x, y) hits a given page. 487 */ 488 private boolean hitsPage(int index, float x, float y) { 489 final View page = getChildAt(index); 490 if (page != null) { 491 float[] localXY = { x, y }; 492 mapPointFromSelfToChild(page, localXY); 493 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 494 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 495 } 496 return false; 497 } 498 499 @Override 500 protected boolean hitsPreviousPage(float x, float y) { 501 // mNextPage is set to INVALID_PAGE whenever we are stationary. 502 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 503 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 504 return hitsPage(current - 1, x, y); 505 } 506 507 @Override 508 protected boolean hitsNextPage(float x, float y) { 509 // mNextPage is set to INVALID_PAGE whenever we are stationary. 510 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 511 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 512 return hitsPage(current + 1, x, y); 513 } 514 515 public boolean onTouch(View v, MotionEvent event) { 516 // this is an intercepted event being forwarded from a cell layout 517 if (mIsSmall || mIsInUnshrinkAnimation) { 518 // Only allow clicks on a CellLayout if it is visible 519 if (mShrinkState != ShrinkState.BOTTOM_HIDDEN) { 520 mLauncher.onWorkspaceClick((CellLayout) v); 521 } 522 return true; 523 } 524 return false; 525 } 526 527 protected void onWindowVisibilityChanged (int visibility) { 528 mLauncher.onWindowVisibilityChanged(visibility); 529 } 530 531 @Override 532 public boolean dispatchUnhandledMove(View focused, int direction) { 533 if (mIsSmall || mIsInUnshrinkAnimation) { 534 // when the home screens are shrunken, shouldn't allow side-scrolling 535 return false; 536 } 537 return super.dispatchUnhandledMove(focused, direction); 538 } 539 540 @Override 541 public boolean onInterceptTouchEvent(MotionEvent ev) { 542 if (mIsSmall || mIsInUnshrinkAnimation) { 543 if (mLauncher.isAllAppsVisible() && 544 mShrinkState == ShrinkState.BOTTOM_HIDDEN) { 545 // Intercept this event so we can show the workspace in full view 546 // when it is clicked on and it is small 547 return true; 548 } 549 return false; 550 } 551 return super.onInterceptTouchEvent(ev); 552 } 553 554 @Override 555 protected void determineScrollingStart(MotionEvent ev) { 556 if (!mIsSmall && !mIsInUnshrinkAnimation) super.determineScrollingStart(ev); 557 } 558 559 protected void onPageBeginMoving() { 560 if (mNextPage != INVALID_PAGE) { 561 // we're snapping to a particular screen 562 enableChildrenCache(mCurrentPage, mNextPage); 563 } else { 564 // this is when user is actively dragging a particular screen, they might 565 // swipe it either left or right (but we won't advance by more than one screen) 566 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 567 } 568 showOutlines(); 569 } 570 571 protected void onPageEndMoving() { 572 clearChildrenCache(); 573 // Hide the outlines, as long as we're not dragging 574 if (!mDragController.dragging()) { 575 hideOutlines(); 576 } 577 mOverScrollMaxBackgroundAlpha = 0.0f; 578 mOverScrollPageIndex = -1; 579 } 580 581 @Override 582 protected void notifyPageSwitchListener() { 583 super.notifyPageSwitchListener(); 584 585 if (mPreviousIndicator != null) { 586 // if we know the next page, we show the indication for it right away; it looks 587 // weird if the indicators are lagging 588 int page = mNextPage; 589 if (page == INVALID_PAGE) { 590 page = mCurrentPage; 591 } 592 mPreviousIndicator.setLevel(page); 593 mNextIndicator.setLevel(page); 594 } 595 Launcher.setScreen(mCurrentPage); 596 }; 597 598 // As a ratio of screen height, the total distance we want the parallax effect to span 599 // vertically 600 private float wallpaperTravelToScreenHeightRatio(int width, int height) { 601 return 1.1f; 602 } 603 604 // As a ratio of screen height, the total distance we want the parallax effect to span 605 // horizontally 606 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 607 float aspectRatio = width / (float) height; 608 609 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 610 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 611 // We will use these two data points to extrapolate how much the wallpaper parallax effect 612 // to span (ie travel) at any aspect ratio: 613 614 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 615 final float ASPECT_RATIO_PORTRAIT = 10/16f; 616 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 617 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 618 619 // To find out the desired width at different aspect ratios, we use the following two 620 // formulas, where the coefficient on x is the aspect ratio (width/height): 621 // (16/10)x + y = 1.5 622 // (10/16)x + y = 1.2 623 // We solve for x and y and end up with a final formula: 624 final float x = 625 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 626 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 627 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 628 return x * aspectRatio + y; 629 } 630 631 // The range of scroll values for Workspace 632 private int getScrollRange() { 633 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 634 } 635 636 protected void setWallpaperDimension() { 637 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 638 final int maxDim = Math.max(display.getWidth(), display.getHeight()); 639 final int minDim = Math.min(display.getWidth(), display.getHeight()); 640 641 // We need to ensure that there is enough extra space in the wallpaper for the intended 642 // parallax effects 643 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 644 mWallpaperHeight = (int)(maxDim * wallpaperTravelToScreenHeightRatio(maxDim, minDim)); 645 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 646 } 647 648 public void setVerticalWallpaperOffset(float offset) { 649 mWallpaperOffset.setFinalY(offset); 650 } 651 public float getVerticalWallpaperOffset() { 652 return mWallpaperOffset.getCurrY(); 653 } 654 public void setHorizontalWallpaperOffset(float offset) { 655 mWallpaperOffset.setFinalX(offset); 656 } 657 public float getHorizontalWallpaperOffset() { 658 return mWallpaperOffset.getCurrX(); 659 } 660 661 private float wallpaperOffsetForCurrentScroll() { 662 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 663 // The wallpaper travel width is how far, from left to right, the wallpaper will move 664 // at this orientation (for example, in portrait mode we don't move all the way to the 665 // edges of the wallpaper, or otherwise the parallax effect would be too strong) 666 int wallpaperTravelWidth = (int) (display.getWidth() * 667 wallpaperTravelToScreenWidthRatio(display.getWidth(), display.getHeight())); 668 669 // Account for overscroll: you only see the absolute edge of the wallpaper if 670 // you overscroll as far as you can in landscape mode 671 int overscrollOffset = (int) (maxOverScroll() * display.getWidth()); 672 float overscrollRatio = overscrollOffset / (float) getScrollRange(); 673 int scrollRangeWithOverscroll = getScrollRange() + 2 * overscrollOffset; 674 675 // Set wallpaper offset steps (1 / (number of screens - 1)) 676 // We have 3 vertical offset states (centered, and then top/bottom aligned 677 // for all apps/customize) 678 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f / (3 - 1)); 679 680 float scrollProgress = 681 mScrollX / (float) scrollRangeWithOverscroll + overscrollRatio; 682 float offsetInDips = wallpaperTravelWidth * scrollProgress + 683 (mWallpaperWidth - wallpaperTravelWidth) / 2; 684 float offset = offsetInDips / (float) mWallpaperWidth; 685 return offset; 686 } 687 private void syncWallpaperOffsetWithScroll() { 688 if (LauncherApplication.isScreenXLarge()) { 689 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 690 } 691 } 692 693 public void updateWallpaperOffsetImmediately() { 694 mUpdateWallpaperOffsetImmediately = true; 695 } 696 697 private void updateWallpaperOffsets() { 698 boolean updateNow = false; 699 boolean keepUpdating = true; 700 if (mUpdateWallpaperOffsetImmediately) { 701 updateNow = true; 702 keepUpdating = false; 703 mWallpaperOffset.jumpToFinal(); 704 mUpdateWallpaperOffsetImmediately = false; 705 } else { 706 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 707 } 708 if (updateNow) { 709 IBinder token = getWindowToken(); 710 if (token != null) { 711 mWallpaperManager.setWallpaperOffsets(getWindowToken(), 712 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 713 } 714 } 715 if (keepUpdating) { 716 invalidate(); 717 } 718 } 719 720 class WallpaperOffsetInterpolator { 721 float mFinalHorizontalWallpaperOffset = 0.0f; 722 float mFinalVerticalWallpaperOffset = 0.5f; 723 float mHorizontalWallpaperOffset = 0.0f; 724 float mVerticalWallpaperOffset = 0.5f; 725 long mLastWallpaperOffsetUpdateTime; 726 boolean mIsMovingFast; 727 boolean mOverrideHorizontalCatchupConstant; 728 float mHorizontalCatchupConstant = 0.35f; 729 float mVerticalCatchupConstant = 0.35f; 730 731 public WallpaperOffsetInterpolator() { 732 } 733 734 public void setOverrideHorizontalCatchupConstant(boolean override) { 735 mOverrideHorizontalCatchupConstant = override; 736 } 737 738 public void setHorizontalCatchupConstant(float f) { 739 mHorizontalCatchupConstant = f; 740 } 741 742 public void setVerticalCatchupConstant(float f) { 743 mVerticalCatchupConstant = f; 744 } 745 746 public boolean computeScrollOffset() { 747 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 748 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 749 mIsMovingFast = false; 750 return false; 751 } 752 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 753 boolean isLandscape = display.getWidth() > display.getHeight(); 754 755 long currentTime = System.currentTimeMillis(); 756 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 757 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 758 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 759 760 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 761 if (!mIsMovingFast && xdiff > 0.07) { 762 mIsMovingFast = true; 763 } 764 765 float fractionToCatchUpIn1MsHorizontal; 766 if (mOverrideHorizontalCatchupConstant) { 767 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 768 } else if (mIsMovingFast) { 769 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 770 } else { 771 // slow 772 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 773 } 774 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 775 776 777 fractionToCatchUpIn1MsHorizontal /= 33f; 778 fractionToCatchUpIn1MsVertical /= 33f; 779 780 final float UPDATE_THRESHOLD = 0.00001f; 781 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 782 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 783 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 784 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 785 if (jumpToFinalValue) { 786 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 787 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 788 } else { 789 float percentToCatchUpVertical = 790 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 791 float percentToCatchUpHorizontal = 792 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 793 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 794 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 795 } 796 797 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 798 return true; 799 } 800 801 public float getCurrX() { 802 return mHorizontalWallpaperOffset; 803 } 804 805 public float getFinalX() { 806 return mFinalHorizontalWallpaperOffset; 807 } 808 809 public float getCurrY() { 810 return mVerticalWallpaperOffset; 811 } 812 813 public float getFinalY() { 814 return mFinalVerticalWallpaperOffset; 815 } 816 817 public void setFinalX(float x) { 818 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 819 } 820 821 public void setFinalY(float y) { 822 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 823 } 824 825 public void jumpToFinal() { 826 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 827 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 828 } 829 } 830 831 @Override 832 public void computeScroll() { 833 super.computeScroll(); 834 if (mSyncWallpaperOffsetWithScroll) { 835 syncWallpaperOffsetWithScroll(); 836 } 837 } 838 839 public void showOutlines() { 840 if (!mIsSmall && !mIsInUnshrinkAnimation) { 841 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 842 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 843 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 844 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 845 mChildrenOutlineFadeInAnimation.start(); 846 } 847 } 848 849 public void hideOutlines() { 850 if (!mIsSmall && !mIsInUnshrinkAnimation) { 851 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 852 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 853 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 854 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 855 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 856 mChildrenOutlineFadeOutAnimation.start(); 857 } 858 } 859 860 public void setChildrenOutlineAlpha(float alpha) { 861 mChildrenOutlineAlpha = alpha; 862 for (int i = 0; i < getChildCount(); i++) { 863 CellLayout cl = (CellLayout) getChildAt(i); 864 cl.setBackgroundAlpha(alpha); 865 } 866 } 867 868 public float getChildrenOutlineAlpha() { 869 return mChildrenOutlineAlpha; 870 } 871 872 private void showBackgroundGradientForAllApps() { 873 showBackgroundGradient(); 874 mDrawCustomizeTrayBackground = false; 875 } 876 877 private void showBackgroundGradientForCustomizeTray() { 878 showBackgroundGradient(); 879 mDrawCustomizeTrayBackground = true; 880 } 881 882 private void showBackgroundGradient() { 883 if (mBackground == null) return; 884 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 885 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 886 mBackgroundFadeInAnimation = ObjectAnimator.ofFloat(this, "backgroundAlpha", 1.0f); 887 mBackgroundFadeInAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 888 mBackgroundFadeInAnimation.setDuration(BACKGROUND_FADE_IN_DURATION); 889 mBackgroundFadeInAnimation.start(); 890 } 891 892 private void hideBackgroundGradient() { 893 if (mBackground == null) return; 894 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 895 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 896 mBackgroundFadeOutAnimation = ObjectAnimator.ofFloat(this, "backgroundAlpha", 0.0f); 897 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 898 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 899 mBackgroundFadeOutAnimation.start(); 900 } 901 902 public void setBackgroundAlpha(float alpha) { 903 mBackgroundAlpha = alpha; 904 invalidate(); 905 } 906 907 public float getBackgroundAlpha() { 908 return mBackgroundAlpha; 909 } 910 911 /** 912 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 913 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 914 * as being larger. This method computes what offset the rotated view should be translated 915 * in order to minimize this perceived gap. 916 * @param degrees Angle of the view 917 * @param width Width of the view 918 * @param height Height of the view 919 * @return Offset to be used in a View.setTranslationX() call 920 */ 921 private float getOffsetXForRotation(float degrees, int width, int height) { 922 mMatrix.reset(); 923 mCamera.save(); 924 mCamera.rotateY(Math.abs(degrees)); 925 mCamera.getMatrix(mMatrix); 926 mCamera.restore(); 927 928 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 929 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 930 mTempFloat2[0] = width; 931 mTempFloat2[1] = height; 932 mMatrix.mapPoints(mTempFloat2); 933 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 934 } 935 936 float backgroundAlphaInterpolator(float r) { 937 float pivotA = 0.1f; 938 float pivotB = 0.4f; 939 if (r < pivotA) { 940 return 0; 941 } else if (r > pivotB) { 942 return 1.0f; 943 } else { 944 return (r - pivotA)/(pivotB - pivotA); 945 } 946 } 947 948 float overScrollBackgroundAlphaInterpolator(float r) { 949 float threshold = 0.08f; 950 951 if (r > mOverScrollMaxBackgroundAlpha) { 952 mOverScrollMaxBackgroundAlpha = r; 953 } else if (r < mOverScrollMaxBackgroundAlpha) { 954 r = mOverScrollMaxBackgroundAlpha; 955 } 956 957 return Math.min(r / threshold, 1.0f); 958 } 959 960 @Override 961 protected void screenScrolled(int screenCenter) { 962 final int halfScreenSize = getMeasuredWidth() / 2; 963 964 for (int i = 0; i < getChildCount(); i++) { 965 CellLayout cl = (CellLayout) getChildAt(i); 966 if (cl != null) { 967 int totalDistance = getScaledMeasuredWidth(cl) + mPageSpacing; 968 int delta = screenCenter - (getChildOffset(i) - 969 getRelativeChildOffset(i) + halfScreenSize); 970 971 float scrollProgress = delta / (totalDistance * 1.0f); 972 scrollProgress = Math.min(scrollProgress, 1.0f); 973 scrollProgress = Math.max(scrollProgress, -1.0f); 974 975 // If the current page (i) is being overscrolled, we use a different 976 // set of rules for setting the background alpha multiplier. 977 if ((mScrollX < 0 && i == 0) || (mScrollX > mMaxScrollX && 978 i == getChildCount() -1 )) { 979 cl.setBackgroundAlphaMultiplier( 980 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 981 mOverScrollPageIndex = i; 982 } else if (mOverScrollPageIndex != i) { 983 cl.setBackgroundAlphaMultiplier( 984 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 985 } 986 987 float rotation = WORKSPACE_ROTATION * scrollProgress; 988 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 989 cl.setTranslationX(translationX); 990 991 cl.setRotationY(rotation); 992 } 993 } 994 } 995 996 protected void onAttachedToWindow() { 997 super.onAttachedToWindow(); 998 computeScroll(); 999 mDragController.setWindowToken(getWindowToken()); 1000 } 1001 1002 @Override 1003 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1004 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1005 mUpdateWallpaperOffsetImmediately = true; 1006 } 1007 super.onLayout(changed, left, top, right, bottom); 1008 1009 // if shrinkToBottom() is called on initialization, it has to be deferred 1010 // until after the first call to onLayout so that it has the correct width 1011 if (mWaitingToShrink) { 1012 // shrink can trigger a synchronous onLayout call, so we 1013 // post this to avoid a stack overflow / tangled onLayout calls 1014 post(new Runnable() { 1015 public void run() { 1016 shrink(mWaitingToShrinkState, false); 1017 mWaitingToShrink = false; 1018 } 1019 }); 1020 } 1021 1022 if (LauncherApplication.isInPlaceRotationEnabled()) { 1023 // When the device is rotated, the scroll position of the current screen 1024 // needs to be refreshed 1025 setCurrentPage(getCurrentPage()); 1026 } 1027 } 1028 1029 public void enableCacheUpdates() { 1030 final int pageCount = getChildCount(); 1031 for (int i = 0; i < pageCount; i++) { 1032 final CellLayout page = (CellLayout) getChildAt(i); 1033 page.enableCacheUpdates(); 1034 } 1035 } 1036 1037 public void disableCacheUpdates() { 1038 final int pageCount = getChildCount(); 1039 for (int i = 0; i < pageCount; i++) { 1040 final CellLayout page = (CellLayout) getChildAt(i); 1041 page.disableCacheUpdates(); 1042 } 1043 } 1044 1045 @Override 1046 protected void onDraw(Canvas canvas) { 1047 updateWallpaperOffsets(); 1048 1049 // Draw the background gradient if necessary 1050 if (mBackground != null && mBackgroundAlpha > 0.0f) { 1051 int alpha = (int) (mBackgroundAlpha * 255); 1052 if (mDrawCustomizeTrayBackground) { 1053 // Find out where to offset the gradient for the customization tray content 1054 mCustomizationDrawer.getLocationOnScreen(mCustomizationDrawerPos); 1055 final Matrix m = mCustomizationDrawer.getMatrix(); 1056 mCustomizationDrawerTransformedPos[0] = 0.0f; 1057 mCustomizationDrawerTransformedPos[1] = mCustomizationDrawerContent.getTop(); 1058 m.mapPoints(mCustomizationDrawerTransformedPos); 1059 1060 // Draw the bg glow behind the gradient 1061 mCustomizeTrayBackground.setAlpha(alpha); 1062 mCustomizeTrayBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1063 getMeasuredHeight()); 1064 mCustomizeTrayBackground.draw(canvas); 1065 1066 // Draw the bg gradient 1067 final int offset = (int) (mCustomizationDrawerPos[1] + 1068 mCustomizationDrawerTransformedPos[1]); 1069 mBackground.setAlpha(alpha); 1070 mBackground.setBounds(mScrollX, offset, mScrollX + getMeasuredWidth(), 1071 offset + getMeasuredHeight()); 1072 mBackground.draw(canvas); 1073 } else { 1074 mBackground.setAlpha(alpha); 1075 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1076 getMeasuredHeight()); 1077 mBackground.draw(canvas); 1078 } 1079 } 1080 super.onDraw(canvas); 1081 } 1082 1083 @Override 1084 protected void dispatchDraw(Canvas canvas) { 1085 if (mIsSmall || mIsInUnshrinkAnimation) { 1086 // Draw all the workspaces if we're small 1087 final int pageCount = getChildCount(); 1088 final long drawingTime = getDrawingTime(); 1089 for (int i = 0; i < pageCount; i++) { 1090 final View page = (View) getChildAt(i); 1091 1092 drawChild(canvas, page, drawingTime); 1093 } 1094 } else { 1095 super.dispatchDraw(canvas); 1096 1097 final int width = getWidth(); 1098 final int height = getHeight(); 1099 1100 // In portrait orientation, draw the glowing edge when dragging to adjacent screens 1101 if (mInScrollArea && (height > width)) { 1102 final int pageHeight = getChildAt(0).getHeight(); 1103 1104 // This determines the height of the glowing edge: 90% of the page height 1105 final int padding = (int) ((height - pageHeight) * 0.5f + pageHeight * 0.1f); 1106 1107 final CellLayout leftPage = (CellLayout) getChildAt(mCurrentPage - 1); 1108 final CellLayout rightPage = (CellLayout) getChildAt(mCurrentPage + 1); 1109 1110 if (leftPage != null && leftPage.getIsDragOverlapping()) { 1111 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left); 1112 d.setBounds(mScrollX, padding, mScrollX + d.getIntrinsicWidth(), height - padding); 1113 d.draw(canvas); 1114 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 1115 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right); 1116 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), padding, mScrollX + width, height - padding); 1117 d.draw(canvas); 1118 } 1119 } 1120 1121 if (mDropView != null) { 1122 // We are animating an item that was just dropped on the home screen. 1123 // Render its View in the current animation position. 1124 canvas.save(Canvas.MATRIX_SAVE_FLAG); 1125 final int xPos = mDropViewPos[0] - mDropView.getScrollX(); 1126 final int yPos = mDropViewPos[1] - mDropView.getScrollY(); 1127 canvas.translate(xPos, yPos); 1128 mDropView.draw(canvas); 1129 canvas.restore(); 1130 } 1131 } 1132 } 1133 1134 @Override 1135 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1136 if (!mLauncher.isAllAppsVisible()) { 1137 final Folder openFolder = getOpenFolder(); 1138 if (openFolder != null) { 1139 return openFolder.requestFocus(direction, previouslyFocusedRect); 1140 } else { 1141 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1142 } 1143 } 1144 return false; 1145 } 1146 1147 @Override 1148 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1149 if (!mLauncher.isAllAppsVisible()) { 1150 final Folder openFolder = getOpenFolder(); 1151 if (openFolder != null) { 1152 openFolder.addFocusables(views, direction); 1153 } else { 1154 super.addFocusables(views, direction, focusableMode); 1155 } 1156 } 1157 } 1158 1159 @Override 1160 public boolean dispatchTouchEvent(MotionEvent ev) { 1161 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 1162 // (In XLarge mode, the workspace is shrunken below all apps, and responds to taps 1163 // ie when you click on a mini-screen, it zooms back to that screen) 1164 if (!LauncherApplication.isScreenXLarge() && mLauncher.isAllAppsVisible()) { 1165 return false; 1166 } 1167 } 1168 1169 return super.dispatchTouchEvent(ev); 1170 } 1171 1172 void enableChildrenCache(int fromPage, int toPage) { 1173 if (fromPage > toPage) { 1174 final int temp = fromPage; 1175 fromPage = toPage; 1176 toPage = temp; 1177 } 1178 1179 final int screenCount = getChildCount(); 1180 1181 fromPage = Math.max(fromPage, 0); 1182 toPage = Math.min(toPage, screenCount - 1); 1183 1184 for (int i = fromPage; i <= toPage; i++) { 1185 final CellLayout layout = (CellLayout) getChildAt(i); 1186 layout.setChildrenDrawnWithCacheEnabled(true); 1187 layout.setChildrenDrawingCacheEnabled(true); 1188 } 1189 } 1190 1191 void clearChildrenCache() { 1192 final int screenCount = getChildCount(); 1193 for (int i = 0; i < screenCount; i++) { 1194 final CellLayout layout = (CellLayout) getChildAt(i); 1195 layout.setChildrenDrawnWithCacheEnabled(false); 1196 } 1197 } 1198 1199 @Override 1200 public boolean onTouchEvent(MotionEvent ev) { 1201 if (mLauncher.isAllAppsVisible()) { 1202 // Cancel any scrolling that is in progress. 1203 if (!mScroller.isFinished()) { 1204 mScroller.abortAnimation(); 1205 } 1206 setCurrentPage(mCurrentPage); 1207 1208 if (mShrinkState == ShrinkState.BOTTOM_HIDDEN) { 1209 mLauncher.showWorkspace(true); 1210 // Let the events fall through to the CellLayouts because if they are not 1211 // hit, then we get a crash due to a missing ACTION_DOWN touch event 1212 } 1213 1214 return false; // We don't want the events 1215 } 1216 1217 return super.onTouchEvent(ev); 1218 } 1219 1220 @Override 1221 protected void onWallpaperTap(MotionEvent ev) { 1222 final int[] position = mTempCell; 1223 getLocationOnScreen(position); 1224 1225 int pointerIndex = ev.getActionIndex(); 1226 position[0] += (int) ev.getX(pointerIndex); 1227 position[1] += (int) ev.getY(pointerIndex); 1228 1229 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1230 ev.getAction() == MotionEvent.ACTION_UP 1231 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1232 position[0], position[1], 0, null); 1233 } 1234 1235 public boolean isSmall() { 1236 return mIsSmall; 1237 } 1238 1239 private float getYScaleForScreen(int screen) { 1240 int x = Math.abs(screen - 2); 1241 1242 // TODO: This should be generalized for use with arbitrary rotation angles. 1243 switch(x) { 1244 case 0: return EXTRA_SCALE_FACTOR_0; 1245 case 1: return EXTRA_SCALE_FACTOR_1; 1246 case 2: return EXTRA_SCALE_FACTOR_2; 1247 } 1248 return 1.0f; 1249 } 1250 1251 public void shrink(ShrinkState shrinkState) { 1252 shrink(shrinkState, true); 1253 } 1254 1255 // we use this to shrink the workspace for the all apps view and the customize view 1256 public void shrink(ShrinkState shrinkState, boolean animated) { 1257 if (mFirstLayout) { 1258 // (mFirstLayout == "first layout has not happened yet") 1259 // if we get a call to shrink() as part of our initialization (for example, if 1260 // Launcher is started in All Apps mode) then we need to wait for a layout call 1261 // to get our width so we can layout the mini-screen views correctly 1262 mWaitingToShrink = true; 1263 mWaitingToShrinkState = shrinkState; 1264 return; 1265 } 1266 // Stop any scrolling, move to the current page right away 1267 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1268 if (!mIsDragInProcess) { 1269 updateWhichPagesAcceptDrops(shrinkState); 1270 } 1271 1272 CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 1273 if (currentPage == null) { 1274 Log.w(TAG, "currentPage is NULL! mCurrentPage " + mCurrentPage 1275 + " mNextPage " + mNextPage); 1276 return; 1277 } 1278 if (currentPage.getBackgroundAlphaMultiplier() < 1.0f) { 1279 currentPage.setBackgroundAlpha(0.0f); 1280 } 1281 currentPage.setBackgroundAlphaMultiplier(1.0f); 1282 1283 mIsSmall = true; 1284 mShrinkState = shrinkState; 1285 1286 // we intercept and reject all touch events when we're small, so be sure to reset the state 1287 mTouchState = TOUCH_STATE_REST; 1288 mActivePointerId = INVALID_POINTER; 1289 1290 final Resources res = getResources(); 1291 final int screenWidth = getWidth(); 1292 final int screenHeight = getHeight(); 1293 1294 // Making the assumption that all pages have the same width as the 0th 1295 final int pageWidth = getChildAt(0).getMeasuredWidth(); 1296 final int pageHeight = getChildAt(0).getMeasuredHeight(); 1297 1298 final int scaledPageWidth = (int) (SHRINK_FACTOR * pageWidth); 1299 final int scaledPageHeight = (int) (SHRINK_FACTOR * pageHeight); 1300 final float extraScaledSpacing = res.getDimension(R.dimen.smallScreenExtraSpacing); 1301 1302 final int screenCount = getChildCount(); 1303 float totalWidth = screenCount * scaledPageWidth + (screenCount - 1) * extraScaledSpacing; 1304 1305 boolean isPortrait = getMeasuredHeight() > getMeasuredWidth(); 1306 float newY = (isPortrait ? 1307 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginPortrait) : 1308 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginLandscape)); 1309 float finalAlpha = 1.0f; 1310 float extraShrinkFactor = 1.0f; 1311 1312 if (shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1313 newY = screenHeight - newY - scaledPageHeight; 1314 } else if (shrinkState == ShrinkState.BOTTOM_HIDDEN) { 1315 // We shrink and disappear to nothing in the case of all apps 1316 // (which is when we shrink to the bottom) 1317 newY = screenHeight - newY - scaledPageHeight; 1318 finalAlpha = 0.0f; 1319 } else if (shrinkState == ShrinkState.MIDDLE) { 1320 newY = screenHeight / 2 - scaledPageHeight / 2; 1321 finalAlpha = 1.0f; 1322 } else if (shrinkState == ShrinkState.TOP) { 1323 newY = (isPortrait ? 1324 getResources().getDimension(R.dimen.customizeSmallScreenVerticalMarginPortrait) : 1325 getResources().getDimension(R.dimen.customizeSmallScreenVerticalMarginLandscape)); 1326 } 1327 1328 int duration; 1329 if (shrinkState == ShrinkState.BOTTOM_HIDDEN || shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1330 duration = res.getInteger(R.integer.config_allAppsWorkspaceShrinkTime); 1331 } else { 1332 duration = res.getInteger(R.integer.config_customizeWorkspaceShrinkTime); 1333 } 1334 1335 // We animate all the screens to the centered position in workspace 1336 // At the same time, the screens become greyed/dimmed 1337 1338 // newX is initialized to the left-most position of the centered screens 1339 float newX = mScroller.getFinalX() + screenWidth / 2 - totalWidth / 2; 1340 1341 // We are going to scale about the center of the view, so we need to adjust the positions 1342 // of the views accordingly 1343 newX -= (pageWidth - scaledPageWidth) / 2.0f; 1344 newY -= (pageHeight - scaledPageHeight) / 2.0f; 1345 1346 if (mAnimator != null) { 1347 mAnimator.cancel(); 1348 } 1349 1350 mAnimator = new AnimatorSet(); 1351 for (int i = 0; i < screenCount; i++) { 1352 final CellLayout cl = (CellLayout) getChildAt(i); 1353 1354 float rotation = (-i + 2) * WORKSPACE_ROTATION; 1355 float rotationScaleX = (float) (1.0f / Math.cos(Math.PI * rotation / 180.0f)); 1356 float rotationScaleY = getYScaleForScreen(i); 1357 1358 if (animated) { 1359 ObjectAnimator animWithInterpolator = ObjectAnimator.ofPropertyValuesHolder(cl, 1360 PropertyValuesHolder.ofFloat("x", newX), 1361 PropertyValuesHolder.ofFloat("y", newY), 1362 PropertyValuesHolder.ofFloat("scaleX", 1363 SHRINK_FACTOR * rotationScaleX * extraShrinkFactor), 1364 PropertyValuesHolder.ofFloat("scaleY", 1365 SHRINK_FACTOR * rotationScaleY * extraShrinkFactor), 1366 PropertyValuesHolder.ofFloat("backgroundAlpha", finalAlpha), 1367 PropertyValuesHolder.ofFloat("alpha", finalAlpha), 1368 PropertyValuesHolder.ofFloat("rotationY", rotation)); 1369 1370 animWithInterpolator.setDuration(duration); 1371 animWithInterpolator.setInterpolator(mZoomOutInterpolator); 1372 mAnimator.playTogether(animWithInterpolator); 1373 } else { 1374 cl.setX((int)newX); 1375 cl.setY((int)newY); 1376 cl.setScaleX(SHRINK_FACTOR * rotationScaleX * extraShrinkFactor); 1377 cl.setScaleY(SHRINK_FACTOR * rotationScaleY * extraShrinkFactor); 1378 cl.setBackgroundAlpha(finalAlpha); 1379 cl.setAlpha(finalAlpha); 1380 cl.setRotationY(rotation); 1381 mShrinkAnimationListener.onAnimationEnd(null); 1382 } 1383 // increment newX for the next screen 1384 newX += scaledPageWidth + extraScaledSpacing; 1385 } 1386 1387 float wallpaperOffset = 0.5f; 1388 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 1389 int wallpaperTravelHeight = (int) (display.getHeight() * 1390 wallpaperTravelToScreenHeightRatio(display.getWidth(), display.getHeight())); 1391 float offsetFromCenter = (wallpaperTravelHeight / (float) mWallpaperHeight) / 2f; 1392 boolean isLandscape = display.getWidth() > display.getHeight(); 1393 1394 switch (shrinkState) { 1395 // animating in 1396 case TOP: 1397 // customize 1398 wallpaperOffset = 0.5f + offsetFromCenter; 1399 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.46f : 0.44f); 1400 break; 1401 case MIDDLE: 1402 case SPRING_LOADED: 1403 wallpaperOffset = 0.5f; 1404 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.34f : 0.32f); 1405 break; 1406 case BOTTOM_HIDDEN: 1407 case BOTTOM_VISIBLE: 1408 // allapps 1409 wallpaperOffset = 0.5f - offsetFromCenter; 1410 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.34f : 0.32f); 1411 break; 1412 } 1413 1414 if (animated) { 1415 mWallpaperOffset.setHorizontalCatchupConstant(0.46f); 1416 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1417 } 1418 1419 setLayoutScale(1.0f); 1420 if (animated) { 1421 mSyncWallpaperOffsetWithScroll = false; 1422 ObjectAnimator wallpaperAnim = ObjectAnimator.ofPropertyValuesHolder(this, 1423 PropertyValuesHolder.ofFloat("verticalWallpaperOffset", wallpaperOffset), 1424 PropertyValuesHolder.ofFloat("horizontalWallpaperOffset", 0.5f)); 1425 mAnimator.play(wallpaperAnim); 1426 1427 wallpaperAnim.setDuration(duration); 1428 wallpaperAnim.setInterpolator(mZoomOutInterpolator); 1429 mAnimator.addListener(mShrinkAnimationListener); 1430 mAnimator.start(); 1431 } else { 1432 setVerticalWallpaperOffset(wallpaperOffset); 1433 setHorizontalWallpaperOffset(0.5f); 1434 updateWallpaperOffsetImmediately(); 1435 } 1436 setChildrenDrawnWithCacheEnabled(true); 1437 1438 if (shrinkState == ShrinkState.TOP) { 1439 showBackgroundGradientForCustomizeTray(); 1440 } else { 1441 showBackgroundGradientForAllApps(); 1442 } 1443 } 1444 1445 /* 1446 * This interpolator emulates the rate at which the perceived scale of an object changes 1447 * as its distance from a camera increases. When this interpolator is applied to a scale 1448 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1449 * from the camera. 1450 */ 1451 static class ZInterpolator implements TimeInterpolator { 1452 private float focalLength; 1453 1454 public ZInterpolator(float foc) { 1455 focalLength = foc; 1456 } 1457 1458 public float getInterpolation(float input) { 1459 return (1.0f - focalLength / (focalLength + input)) / 1460 (1.0f - focalLength / (focalLength + 1.0f)); 1461 } 1462 } 1463 1464 /* 1465 * The exact reverse of ZInterpolator. 1466 */ 1467 static class InverseZInterpolator implements TimeInterpolator { 1468 private ZInterpolator zInterpolator; 1469 public InverseZInterpolator(float foc) { 1470 zInterpolator = new ZInterpolator(foc); 1471 } 1472 public float getInterpolation(float input) { 1473 return 1 - zInterpolator.getInterpolation(1 - input); 1474 } 1475 } 1476 1477 /* 1478 * ZInterpolator compounded with an ease-out. 1479 */ 1480 static class ZoomOutInterpolator implements TimeInterpolator { 1481 private final ZInterpolator zInterpolator = new ZInterpolator(0.2f); 1482 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(1.5f); 1483 1484 public float getInterpolation(float input) { 1485 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1486 } 1487 } 1488 1489 /* 1490 * InvereZInterpolator compounded with an ease-out. 1491 */ 1492 static class ZoomInInterpolator implements TimeInterpolator { 1493 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1494 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1495 1496 public float getInterpolation(float input) { 1497 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1498 } 1499 } 1500 1501 private final ZoomOutInterpolator mZoomOutInterpolator = new ZoomOutInterpolator(); 1502 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1503 1504 private void updateWhichPagesAcceptDrops(ShrinkState state) { 1505 updateWhichPagesAcceptDropsHelper(state, false, 1, 1); 1506 } 1507 1508 private void updateWhichPagesAcceptDropsDuringDrag(ShrinkState state, int spanX, int spanY) { 1509 updateWhichPagesAcceptDropsHelper(state, true, spanX, spanY); 1510 } 1511 1512 private void updateWhichPagesAcceptDropsHelper( 1513 ShrinkState state, boolean isDragHappening, int spanX, int spanY) { 1514 final int screenCount = getChildCount(); 1515 for (int i = 0; i < screenCount; i++) { 1516 CellLayout cl = (CellLayout) getChildAt(i); 1517 cl.setIsDragOccuring(isDragHappening); 1518 switch (state) { 1519 case TOP: 1520 cl.setIsDefaultDropTarget(i == mCurrentPage); 1521 case BOTTOM_HIDDEN: 1522 case BOTTOM_VISIBLE: 1523 case SPRING_LOADED: 1524 if (!isDragHappening) { 1525 // even if a drag isn't happening, we don't want to show a screen as 1526 // accepting drops if it doesn't have at least one free cell 1527 spanX = 1; 1528 spanY = 1; 1529 } 1530 // the page accepts drops if we can find at least one empty spot 1531 cl.setAcceptsDrops(cl.findCellForSpan(null, spanX, spanY)); 1532 break; 1533 default: 1534 throw new RuntimeException("Unhandled ShrinkState " + state); 1535 } 1536 } 1537 } 1538 1539 /* 1540 * 1541 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithItemMinSize) whenever we 1542 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1543 * 1544 * These methods mark the appropriate pages as accepting drops (which alters their visual 1545 * appearance). 1546 * 1547 */ 1548 public void onDragStartedWithItemSpans(int spanX, int spanY, Bitmap b) { 1549 mIsDragInProcess = true; 1550 1551 final Canvas canvas = new Canvas(); 1552 1553 // We need to add extra padding to the bitmap to make room for the glow effect 1554 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1555 1556 CellLayout cl = (CellLayout) getChildAt(0); 1557 int[] desiredSize = cl.cellSpansToSize(spanX, spanY); 1558 // The outline is used to visualize where the item will land if dropped 1559 mDragOutline = createDragOutline(b, canvas, bitmapPadding, desiredSize[0], desiredSize[1]); 1560 1561 updateWhichPagesAcceptDropsDuringDrag(mShrinkState, spanX, spanY); 1562 } 1563 1564 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1565 // never dragged over 1566 public void onDragStopped(boolean success) { 1567 mLastDragView = null; 1568 // In the success case, DragController has already called onDragExit() 1569 if (!success) { 1570 doDragExit(); 1571 } 1572 mIsDragInProcess = false; 1573 updateWhichPagesAcceptDrops(mShrinkState); 1574 } 1575 1576 // We call this when we trigger an unshrink by clicking on the CellLayout cl 1577 public void unshrink(CellLayout clThatWasClicked) { 1578 unshrink(clThatWasClicked, false); 1579 } 1580 1581 public void unshrink(CellLayout clThatWasClicked, boolean springLoaded) { 1582 int newCurrentPage = indexOfChild(clThatWasClicked); 1583 if (mIsSmall) { 1584 if (springLoaded) { 1585 setLayoutScale(SPRING_LOADED_DRAG_SHRINK_FACTOR); 1586 } 1587 scrollToNewPageWithoutMovingPages(newCurrentPage); 1588 unshrink(true, springLoaded); 1589 } 1590 } 1591 1592 1593 public void enterSpringLoadedDragMode(CellLayout clThatWasClicked) { 1594 mShrinkState = ShrinkState.SPRING_LOADED; 1595 unshrink(clThatWasClicked, true); 1596 mDragTargetLayout.onDragEnter(); 1597 } 1598 1599 public void exitSpringLoadedDragMode(ShrinkState shrinkState) { 1600 shrink(shrinkState); 1601 if (mDragTargetLayout != null) { 1602 mDragTargetLayout.onDragExit(); 1603 } 1604 } 1605 1606 void unshrink(boolean animated) { 1607 unshrink(animated, false); 1608 } 1609 1610 void unshrink(boolean animated, boolean springLoaded) { 1611 mWaitingToShrink = false; 1612 if (mIsSmall) { 1613 float finalScaleFactor = 1.0f; 1614 float finalBackgroundAlpha = 0.0f; 1615 if (springLoaded) { 1616 finalScaleFactor = SPRING_LOADED_DRAG_SHRINK_FACTOR; 1617 finalBackgroundAlpha = 1.0f; 1618 } else { 1619 mIsSmall = false; 1620 } 1621 if (mAnimator != null) { 1622 mAnimator.cancel(); 1623 } 1624 1625 mAnimator = new AnimatorSet(); 1626 final int screenCount = getChildCount(); 1627 1628 final int duration = getResources().getInteger(R.integer.config_workspaceUnshrinkTime); 1629 1630 for (int i = 0; i < screenCount; i++) { 1631 final CellLayout cl = (CellLayout)getChildAt(i); 1632 float finalAlphaValue = (i == mCurrentPage) ? 1.0f : 0.0f; 1633 float finalAlphaMultiplierValue = 1634 ((i == mCurrentPage) && (mShrinkState != ShrinkState.SPRING_LOADED)) ? 1635 0.0f : 1.0f; 1636 float rotation = 0.0f; 1637 1638 if (i < mCurrentPage) { 1639 rotation = WORKSPACE_ROTATION; 1640 } else if (i > mCurrentPage) { 1641 rotation = -WORKSPACE_ROTATION; 1642 } 1643 1644 float translation = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1645 1646 if (animated) { 1647 ObjectAnimator animWithInterpolator = ObjectAnimator.ofPropertyValuesHolder(cl, 1648 PropertyValuesHolder.ofFloat("translationX", translation), 1649 PropertyValuesHolder.ofFloat("translationY", 0.0f), 1650 PropertyValuesHolder.ofFloat("scaleX", finalScaleFactor), 1651 PropertyValuesHolder.ofFloat("scaleY", finalScaleFactor), 1652 PropertyValuesHolder.ofFloat("backgroundAlpha", finalBackgroundAlpha), 1653 PropertyValuesHolder.ofFloat("backgroundAlphaMultiplier", 1654 finalAlphaMultiplierValue), 1655 PropertyValuesHolder.ofFloat("alpha", finalAlphaValue)); 1656 animWithInterpolator.setDuration(duration); 1657 animWithInterpolator.setInterpolator(mZoomInInterpolator); 1658 1659 ObjectAnimator rotationAnim = ObjectAnimator.ofPropertyValuesHolder(cl, 1660 PropertyValuesHolder.ofFloat("rotationY", rotation)); 1661 rotationAnim.setDuration(duration); 1662 rotationAnim.setInterpolator(new DecelerateInterpolator(2.0f)); 1663 1664 mAnimator.playTogether(animWithInterpolator, rotationAnim); 1665 } else { 1666 cl.setTranslationX(translation); 1667 cl.setTranslationY(0.0f); 1668 cl.setScaleX(finalScaleFactor); 1669 cl.setScaleY(finalScaleFactor); 1670 cl.setBackgroundAlpha(0.0f); 1671 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1672 cl.setAlpha(finalAlphaValue); 1673 cl.setRotationY(rotation); 1674 mUnshrinkAnimationListener.onAnimationEnd(null); 1675 } 1676 } 1677 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 1678 boolean isLandscape = display.getWidth() > display.getHeight(); 1679 switch (mShrinkState) { 1680 // animating out 1681 case TOP: 1682 // customize 1683 if (animated) { 1684 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.65f : 0.62f); 1685 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.65f : 0.62f); 1686 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1687 } 1688 break; 1689 case MIDDLE: 1690 case SPRING_LOADED: 1691 if (animated) { 1692 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.49f : 0.46f); 1693 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.49f : 0.46f); 1694 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1695 } 1696 break; 1697 case BOTTOM_HIDDEN: 1698 case BOTTOM_VISIBLE: 1699 // all apps 1700 if (animated) { 1701 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.49f : 0.46f); 1702 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.49f : 0.46f); 1703 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1704 } 1705 break; 1706 } 1707 if (animated) { 1708 ObjectAnimator wallpaperAnim = ObjectAnimator.ofPropertyValuesHolder(this, 1709 PropertyValuesHolder.ofFloat( 1710 "verticalWallpaperOffset", 0.5f), 1711 PropertyValuesHolder.ofFloat( 1712 "horizontalWallpaperOffset", wallpaperOffsetForCurrentScroll())); 1713 wallpaperAnim.setDuration(duration); 1714 wallpaperAnim.setInterpolator(mZoomInInterpolator); 1715 mAnimator.play(wallpaperAnim); 1716 1717 // If we call this when we're not animated, onAnimationEnd is never called on 1718 // the listener; make sure we only use the listener when we're actually animating 1719 mAnimator.addListener(mUnshrinkAnimationListener); 1720 mAnimator.start(); 1721 } else { 1722 setHorizontalWallpaperOffset(wallpaperOffsetForCurrentScroll()); 1723 setVerticalWallpaperOffset(0.5f); 1724 updateWallpaperOffsetImmediately(); 1725 } 1726 } 1727 1728 if (!springLoaded) { 1729 hideBackgroundGradient(); 1730 } 1731 } 1732 1733 /** 1734 * Draw the View v into the given Canvas. 1735 * 1736 * @param v the view to draw 1737 * @param destCanvas the canvas to draw on 1738 * @param padding the horizontal and vertical padding to use when drawing 1739 */ 1740 private void drawDragView(View v, Canvas destCanvas, int padding) { 1741 final Rect clipRect = mTempRect; 1742 v.getDrawingRect(clipRect); 1743 1744 // For a TextView, adjust the clip rect so that we don't include the text label 1745 if (v instanceof BubbleTextView) { 1746 final BubbleTextView tv = (BubbleTextView) v; 1747 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1748 tv.getLayout().getLineTop(0); 1749 } else if (v instanceof TextView) { 1750 final TextView tv = (TextView) v; 1751 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1752 tv.getLayout().getLineTop(0); 1753 } 1754 1755 // Draw the View into the bitmap. 1756 // The translate of scrollX and scrollY is necessary when drawing TextViews, because 1757 // they set scrollX and scrollY to large values to achieve centered text 1758 1759 destCanvas.save(); 1760 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1761 destCanvas.clipRect(clipRect, Op.REPLACE); 1762 v.draw(destCanvas); 1763 destCanvas.restore(); 1764 } 1765 1766 /** 1767 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1768 * Responsibility for the bitmap is transferred to the caller. 1769 */ 1770 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1771 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1772 final Bitmap b = Bitmap.createBitmap( 1773 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1774 1775 canvas.setBitmap(b); 1776 drawDragView(v, canvas, padding); 1777 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1778 return b; 1779 } 1780 1781 /** 1782 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1783 * Responsibility for the bitmap is transferred to the caller. 1784 */ 1785 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h) { 1786 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1787 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1788 canvas.setBitmap(b); 1789 1790 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 1791 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 1792 (h - padding) / (float) orig.getHeight()); 1793 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 1794 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 1795 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 1796 1797 // center the image 1798 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 1799 1800 Paint p = new Paint(); 1801 p.setFilterBitmap(true); 1802 canvas.drawBitmap(orig, src, dst, p); 1803 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1804 1805 return b; 1806 } 1807 1808 /** 1809 * Creates a drag outline to represent a drop (that we don't have the actual information for 1810 * yet). May be changed in the future to alter the drop outline slightly depending on the 1811 * clip description mime data. 1812 */ 1813 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 1814 Resources r = getResources(); 1815 final int outlineColor = r.getColor(R.color.drag_outline_color); 1816 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 1817 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 1818 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 1819 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 1820 final Bitmap b = Bitmap.createBitmap( 1821 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 1822 1823 canvas.setBitmap(b); 1824 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 1825 rectRadius, rectRadius, mExternalDragOutlinePaint); 1826 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1827 return b; 1828 } 1829 1830 /** 1831 * Returns a new bitmap to show when the given View is being dragged around. 1832 * Responsibility for the bitmap is transferred to the caller. 1833 */ 1834 private Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1835 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1836 final Bitmap b = Bitmap.createBitmap( 1837 mDragOutline.getWidth(), mDragOutline.getHeight(), Bitmap.Config.ARGB_8888); 1838 1839 canvas.setBitmap(b); 1840 canvas.drawBitmap(mDragOutline, 0, 0, null); 1841 drawDragView(v, canvas, padding); 1842 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 1843 1844 return b; 1845 } 1846 1847 void startDrag(CellLayout.CellInfo cellInfo) { 1848 View child = cellInfo.cell; 1849 1850 // Make sure the drag was started by a long press as opposed to a long click. 1851 if (!child.isInTouchMode()) { 1852 return; 1853 } 1854 1855 mDragInfo = cellInfo; 1856 1857 CellLayout current = (CellLayout) getChildAt(cellInfo.screen); 1858 current.onDragChild(child); 1859 1860 child.clearFocus(); 1861 child.setPressed(false); 1862 1863 final Canvas canvas = new Canvas(); 1864 1865 // We need to add extra padding to the bitmap to make room for the glow effect 1866 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1867 1868 // The outline is used to visualize where the item will land if dropped 1869 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 1870 1871 // The drag bitmap follows the touch point around on the screen 1872 final Bitmap b = createDragBitmap(child, canvas, bitmapPadding); 1873 1874 final int bmpWidth = b.getWidth(); 1875 final int bmpHeight = b.getHeight(); 1876 child.getLocationOnScreen(mTempXY); 1877 final int screenX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 1878 final int screenY = (int) mTempXY[1] + (child.getHeight() - bmpHeight) / 2; 1879 mLauncher.lockScreenOrientation(); 1880 mDragController.startDrag(b, screenX, screenY, 0, 0, bmpWidth, bmpHeight, this, 1881 child.getTag(), DragController.DRAG_ACTION_MOVE, null); 1882 b.recycle(); 1883 } 1884 1885 void addApplicationShortcut(ShortcutInfo info, int screen, int cellX, int cellY, 1886 boolean insertAtFirst, int intersectX, int intersectY) { 1887 final CellLayout cellLayout = (CellLayout) getChildAt(screen); 1888 View view = mLauncher.createShortcut(R.layout.application, cellLayout, (ShortcutInfo) info); 1889 1890 final int[] cellXY = new int[2]; 1891 cellLayout.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1892 addInScreen(view, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1893 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 1894 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 1895 cellXY[0], cellXY[1]); 1896 } 1897 1898 private void setPositionForDropAnimation( 1899 View dragView, int dragViewX, int dragViewY, View parent, View child) { 1900 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 1901 1902 // Based on the position of the drag view, find the top left of the original view 1903 int viewX = dragViewX + (dragView.getWidth() - child.getWidth()) / 2; 1904 int viewY = dragViewY + (dragView.getHeight() - child.getHeight()) / 2; 1905 viewX += getResources().getInteger(R.integer.config_dragViewOffsetX); 1906 viewY += getResources().getInteger(R.integer.config_dragViewOffsetY); 1907 1908 // Set its old pos (in the new parent's coordinates); it will be animated 1909 // in animateViewIntoPosition after the next layout pass 1910 lp.oldX = viewX - (parent.getLeft() - mScrollX); 1911 lp.oldY = viewY - (parent.getTop() - mScrollY); 1912 } 1913 1914 /* 1915 * We should be careful that this method cannot result in any synchronous requestLayout() 1916 * calls, as it is called from onLayout(). 1917 */ 1918 public void animateViewIntoPosition(final View view) { 1919 final CellLayout parent = (CellLayout) view.getParent().getParent(); 1920 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 1921 1922 // Convert the animation params to be relative to the Workspace, not the CellLayout 1923 final int fromX = lp.oldX + parent.getLeft(); 1924 final int fromY = lp.oldY + parent.getTop(); 1925 1926 final int dx = lp.x - lp.oldX; 1927 final int dy = lp.y - lp.oldY; 1928 1929 // Calculate the duration of the animation based on the object's distance 1930 final float dist = (float) Math.sqrt(dx*dx + dy*dy); 1931 final Resources res = getResources(); 1932 final float maxDist = (float) res.getInteger(R.integer.config_dropAnimMaxDist); 1933 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration); 1934 if (dist < maxDist) { 1935 duration *= mQuintEaseOutInterpolator.getInterpolation(dist / maxDist); 1936 } 1937 1938 if (mDropAnim != null) { 1939 mDropAnim.end(); 1940 } 1941 mDropAnim = new ValueAnimator(); 1942 mDropAnim.setInterpolator(mQuintEaseOutInterpolator); 1943 1944 // The view is invisible during the animation; we render it manually. 1945 mDropAnim.addListener(new AnimatorListenerAdapter() { 1946 public void onAnimationStart(Animator animation) { 1947 // Set this here so that we don't render it until the animation begins 1948 mDropView = view; 1949 } 1950 1951 public void onAnimationEnd(Animator animation) { 1952 if (mDropView != null) { 1953 mDropView.setVisibility(View.VISIBLE); 1954 mDropView = null; 1955 } 1956 } 1957 }); 1958 1959 mDropAnim.setDuration(duration); 1960 mDropAnim.setFloatValues(0.0f, 1.0f); 1961 mDropAnim.removeAllUpdateListeners(); 1962 mDropAnim.addUpdateListener(new AnimatorUpdateListener() { 1963 public void onAnimationUpdate(ValueAnimator animation) { 1964 final float percent = (Float) animation.getAnimatedValue(); 1965 // Invalidate the old position 1966 invalidate(mDropViewPos[0], mDropViewPos[1], 1967 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 1968 1969 mDropViewPos[0] = fromX + (int) (percent * dx + 0.5f); 1970 mDropViewPos[1] = fromY + (int) (percent * dy + 0.5f); 1971 invalidate(mDropViewPos[0], mDropViewPos[1], 1972 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 1973 } 1974 }); 1975 1976 mDropAnim.start(); 1977 } 1978 1979 /** 1980 * {@inheritDoc} 1981 */ 1982 public boolean acceptDrop(DragSource source, int x, int y, 1983 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 1984 1985 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1986 if (source != this) { 1987 // Don't accept the drop if we're not over a screen at time of drop 1988 if (mDragTargetLayout == null || !mDragTargetLayout.getAcceptsDrops()) { 1989 return false; 1990 } 1991 1992 final CellLayout.CellInfo dragCellInfo = mDragInfo; 1993 final int spanX = dragCellInfo == null ? 1 : dragCellInfo.spanX; 1994 final int spanY = dragCellInfo == null ? 1 : dragCellInfo.spanY; 1995 1996 final View ignoreView = dragCellInfo == null ? null : dragCellInfo.cell; 1997 1998 // Don't accept the drop if there's no room for the item 1999 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 2000 mLauncher.showOutOfSpaceMessage(); 2001 return false; 2002 } 2003 } 2004 return true; 2005 } 2006 2007 public void onDrop(DragSource source, int x, int y, int xOffset, int yOffset, 2008 DragView dragView, Object dragInfo) { 2009 2010 int originX = x - xOffset; 2011 int originY = y - yOffset; 2012 2013 if (mIsSmall || mIsInUnshrinkAnimation) { 2014 // get originX and originY in the local coordinate system of the screen 2015 mTempOriginXY[0] = originX; 2016 mTempOriginXY[1] = originY; 2017 mapPointFromSelfToChild(mDragTargetLayout, mTempOriginXY); 2018 originX = (int)mTempOriginXY[0]; 2019 originY = (int)mTempOriginXY[1]; 2020 } 2021 2022 // When you drag to a particular screen, make that the new current/default screen, so any 2023 // subsequent taps add items to that screen 2024 int dragTargetIndex = indexOfChild(mDragTargetLayout); 2025 if (mCurrentPage != dragTargetIndex && (mIsSmall || mIsInUnshrinkAnimation)) { 2026 scrollToNewPageWithoutMovingPages(dragTargetIndex); 2027 } 2028 2029 if (source != this) { 2030 if (!mIsSmall || mWasSpringLoadedOnDragExit) { 2031 onDropExternal(originX, originY, dragInfo, mDragTargetLayout, false); 2032 } else { 2033 // if we drag and drop to small screens, don't pass the touch x/y coords (when we 2034 // enable spring-loaded adding, however, we do want to pass the touch x/y coords) 2035 onDropExternal(-1, -1, dragInfo, mDragTargetLayout, false); 2036 } 2037 } else if (mDragInfo != null) { 2038 final View cell = mDragInfo.cell; 2039 CellLayout dropTargetLayout = mDragTargetLayout; 2040 2041 // Handle the case where the user drops when in the scroll area. 2042 // This is treated as a drop on the adjacent page. 2043 if (dropTargetLayout == null && mInScrollArea) { 2044 if (mPendingScrollDirection == DragController.SCROLL_LEFT) { 2045 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage - 1); 2046 } else if (mPendingScrollDirection == DragController.SCROLL_RIGHT) { 2047 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage + 1); 2048 } 2049 } 2050 2051 if (dropTargetLayout != null) { 2052 // Move internally 2053 mTargetCell = findNearestVacantArea(originX, originY, 2054 mDragInfo.spanX, mDragInfo.spanY, cell, dropTargetLayout, 2055 mTargetCell); 2056 2057 final int screen = (mTargetCell == null) ? 2058 mDragInfo.screen : indexOfChild(dropTargetLayout); 2059 2060 if (screen != mCurrentPage) { 2061 snapToPage(screen); 2062 } 2063 2064 if (mTargetCell != null) { 2065 if (screen != mDragInfo.screen) { 2066 // Reparent the view 2067 ((CellLayout) getChildAt(mDragInfo.screen)).removeView(cell); 2068 addInScreen(cell, screen, mTargetCell[0], mTargetCell[1], 2069 mDragInfo.spanX, mDragInfo.spanY); 2070 } 2071 2072 // update the item's position after drop 2073 final ItemInfo info = (ItemInfo) cell.getTag(); 2074 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2075 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 2076 lp.cellX = mTargetCell[0]; 2077 lp.cellY = mTargetCell[1]; 2078 cell.setId(LauncherModel.getCellLayoutChildId(-1, mDragInfo.screen, 2079 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2080 2081 LauncherModel.moveItemInDatabase(mLauncher, info, 2082 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2083 lp.cellX, lp.cellY); 2084 } 2085 } 2086 2087 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2088 2089 // Prepare it to be animated into its new position 2090 // This must be called after the view has been re-parented 2091 setPositionForDropAnimation(dragView, originX, originY, parent, cell); 2092 boolean animateDrop = !mWasSpringLoadedOnDragExit; 2093 parent.onDropChild(cell, animateDrop); 2094 } 2095 } 2096 2097 public void onDragEnter(DragSource source, int x, int y, int xOffset, 2098 int yOffset, DragView dragView, Object dragInfo) { 2099 mDragTargetLayout = null; // Reset the drag state 2100 2101 if (!mIsSmall) { 2102 mDragTargetLayout = getCurrentDropLayout(); 2103 mDragTargetLayout.onDragEnter(); 2104 showOutlines(); 2105 } 2106 } 2107 2108 public DropTarget getDropTargetDelegate(DragSource source, int x, int y, 2109 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 2110 2111 if (mIsSmall || mIsInUnshrinkAnimation) { 2112 // If we're shrunken, don't let anyone drag on folders/etc that are on the mini-screens 2113 return null; 2114 } 2115 // We may need to delegate the drag to a child view. If a 1x1 item 2116 // would land in a cell occupied by a DragTarget (e.g. a Folder), 2117 // then drag events should be handled by that child. 2118 2119 ItemInfo item = (ItemInfo)dragInfo; 2120 CellLayout currentLayout = getCurrentDropLayout(); 2121 2122 int dragPointX, dragPointY; 2123 if (item.spanX == 1 && item.spanY == 1) { 2124 // For a 1x1, calculate the drop cell exactly as in onDragOver 2125 dragPointX = x - xOffset; 2126 dragPointY = y - yOffset; 2127 } else { 2128 // Otherwise, use the exact drag coordinates 2129 dragPointX = x; 2130 dragPointY = y; 2131 } 2132 dragPointX += mScrollX - currentLayout.getLeft(); 2133 dragPointY += mScrollY - currentLayout.getTop(); 2134 2135 // If we are dragging over a cell that contains a DropTarget that will 2136 // accept the drop, delegate to that DropTarget. 2137 final int[] cellXY = mTempCell; 2138 currentLayout.estimateDropCell(dragPointX, dragPointY, item.spanX, item.spanY, cellXY); 2139 View child = currentLayout.getChildAt(cellXY[0], cellXY[1]); 2140 if (child instanceof DropTarget) { 2141 DropTarget target = (DropTarget)child; 2142 if (target.acceptDrop(source, x, y, xOffset, yOffset, dragView, dragInfo)) { 2143 return target; 2144 } 2145 } 2146 return null; 2147 } 2148 2149 /** 2150 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 2151 * in the returned structure related to the widgets that match the drop (or a null list if it is 2152 * a shortcut drop). If the drop is not accepted then a null structure is returned. 2153 */ 2154 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 2155 final LauncherModel model = mLauncher.getModel(); 2156 final ClipDescription desc = event.getClipDescription(); 2157 final int mimeTypeCount = desc.getMimeTypeCount(); 2158 for (int i = 0; i < mimeTypeCount; ++i) { 2159 final String mimeType = desc.getMimeType(i); 2160 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 2161 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 2162 } else { 2163 final List<WidgetMimeTypeHandlerData> widgets = 2164 model.resolveWidgetsForMimeType(mContext, mimeType); 2165 if (widgets.size() > 0) { 2166 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 2167 } 2168 } 2169 } 2170 return null; 2171 } 2172 2173 /** 2174 * Global drag and drop handler 2175 */ 2176 @Override 2177 public boolean onDragEvent(DragEvent event) { 2178 final ClipDescription desc = event.getClipDescription(); 2179 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 2180 final int[] pos = new int[2]; 2181 layout.getLocationOnScreen(pos); 2182 // We need to offset the drag coordinates to layout coordinate space 2183 final int x = (int) event.getX() - pos[0]; 2184 final int y = (int) event.getY() - pos[1]; 2185 2186 switch (event.getAction()) { 2187 case DragEvent.ACTION_DRAG_STARTED: { 2188 // Validate this drag 2189 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2190 if (test != null) { 2191 boolean isShortcut = (test.second == null); 2192 if (isShortcut) { 2193 // Check if we have enough space on this screen to add a new shortcut 2194 if (!layout.findCellForSpan(pos, 1, 1)) { 2195 Toast.makeText(mContext, mContext.getString(R.string.out_of_space), 2196 Toast.LENGTH_SHORT).show(); 2197 return false; 2198 } 2199 } 2200 } else { 2201 // Show error message if we couldn't accept any of the items 2202 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 2203 Toast.LENGTH_SHORT).show(); 2204 return false; 2205 } 2206 2207 // Create the drag outline 2208 // We need to add extra padding to the bitmap to make room for the glow effect 2209 final Canvas canvas = new Canvas(); 2210 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2211 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 2212 2213 // Show the current page outlines to indicate that we can accept this drop 2214 showOutlines(); 2215 layout.setIsDragOccuring(true); 2216 layout.onDragEnter(); 2217 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2218 2219 return true; 2220 } 2221 case DragEvent.ACTION_DRAG_LOCATION: 2222 // Visualize the drop location 2223 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2224 return true; 2225 case DragEvent.ACTION_DROP: { 2226 // Try and add any shortcuts 2227 final LauncherModel model = mLauncher.getModel(); 2228 final ClipData data = event.getClipData(); 2229 2230 // We assume that the mime types are ordered in descending importance of 2231 // representation. So we enumerate the list of mime types and alert the 2232 // user if any widgets can handle the drop. Only the most preferred 2233 // representation will be handled. 2234 pos[0] = x; 2235 pos[1] = y; 2236 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2237 if (test != null) { 2238 final int index = test.first; 2239 final List<WidgetMimeTypeHandlerData> widgets = test.second; 2240 final boolean isShortcut = (widgets == null); 2241 final String mimeType = desc.getMimeType(index); 2242 if (isShortcut) { 2243 final Intent intent = data.getItemAt(index).getIntent(); 2244 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 2245 onDropExternal(x, y, info, layout, false); 2246 } else { 2247 if (widgets.size() == 1) { 2248 // If there is only one item, then go ahead and add and configure 2249 // that widget 2250 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 2251 final PendingAddWidgetInfo createInfo = 2252 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 2253 mLauncher.addAppWidgetFromDrop(createInfo, mCurrentPage, pos); 2254 } else { 2255 // Show the widget picker dialog if there is more than one widget 2256 // that can handle this data type 2257 final InstallWidgetReceiver.WidgetListAdapter adapter = 2258 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 2259 data, widgets, layout, mCurrentPage, pos); 2260 final AlertDialog.Builder builder = 2261 new AlertDialog.Builder(mContext); 2262 builder.setAdapter(adapter, adapter); 2263 builder.setCancelable(true); 2264 builder.setTitle(mContext.getString( 2265 R.string.external_drop_widget_pick_title)); 2266 builder.setIcon(R.drawable.ic_no_applications); 2267 builder.show(); 2268 } 2269 } 2270 } 2271 return true; 2272 } 2273 case DragEvent.ACTION_DRAG_ENDED: 2274 // Hide the page outlines after the drop 2275 layout.setIsDragOccuring(false); 2276 layout.onDragExit(); 2277 hideOutlines(); 2278 return true; 2279 } 2280 return super.onDragEvent(event); 2281 } 2282 2283 /* 2284 * 2285 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2286 * coordinate space. The argument xy is modified with the return result. 2287 * 2288 */ 2289 void mapPointFromSelfToChild(View v, float[] xy) { 2290 mapPointFromSelfToChild(v, xy, null); 2291 } 2292 2293 /* 2294 * 2295 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2296 * coordinate space. The argument xy is modified with the return result. 2297 * 2298 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2299 * computing it itself; we use this to avoid redundant matrix inversions in 2300 * findMatchingPageForDragOver 2301 * 2302 */ 2303 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2304 if (cachedInverseMatrix == null) { 2305 v.getMatrix().invert(mTempInverseMatrix); 2306 cachedInverseMatrix = mTempInverseMatrix; 2307 } 2308 xy[0] = xy[0] + mScrollX - v.getLeft(); 2309 xy[1] = xy[1] + mScrollY - v.getTop(); 2310 cachedInverseMatrix.mapPoints(xy); 2311 } 2312 2313 /* 2314 * 2315 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2316 * the parent View's coordinate space. The argument xy is modified with the return result. 2317 * 2318 */ 2319 void mapPointFromChildToSelf(View v, float[] xy) { 2320 v.getMatrix().mapPoints(xy); 2321 xy[0] -= (mScrollX - v.getLeft()); 2322 xy[1] -= (mScrollY - v.getTop()); 2323 } 2324 2325 static private float squaredDistance(float[] point1, float[] point2) { 2326 float distanceX = point1[0] - point2[0]; 2327 float distanceY = point2[1] - point2[1]; 2328 return distanceX * distanceX + distanceY * distanceY; 2329 } 2330 2331 /* 2332 * 2333 * Returns true if the passed CellLayout cl overlaps with dragView 2334 * 2335 */ 2336 boolean overlaps(CellLayout cl, DragView dragView, 2337 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2338 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2339 final float[] draggedItemTopLeft = mTempDragCoordinates; 2340 draggedItemTopLeft[0] = dragViewX; 2341 draggedItemTopLeft[1] = dragViewY; 2342 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2343 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2344 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2345 2346 // Transform the dragged item's top left coordinates 2347 // to the CellLayout's local coordinates 2348 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2349 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2350 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2351 2352 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2353 // Transform the dragged item's bottom right coordinates 2354 // to the CellLayout's local coordinates 2355 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2356 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2357 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2358 2359 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2360 float overlap = (overlapRegionRight - overlapRegionLeft) * 2361 (overlapRegionBottom - overlapRegionTop); 2362 if (overlap > 0) { 2363 return true; 2364 } 2365 } 2366 } 2367 return false; 2368 } 2369 2370 /* 2371 * 2372 * This method returns the CellLayout that is currently being dragged to. In order to drag 2373 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2374 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2375 * 2376 * Return null if no CellLayout is currently being dragged over 2377 * 2378 */ 2379 private CellLayout findMatchingPageForDragOver( 2380 DragView dragView, int originX, int originY, int offsetX, int offsetY) { 2381 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2382 // with the item being dragged and then choose the one that's closest to the touch point 2383 final int screenCount = getChildCount(); 2384 CellLayout bestMatchingScreen = null; 2385 float smallestDistSoFar = Float.MAX_VALUE; 2386 2387 for (int i = 0; i < screenCount; i++) { 2388 CellLayout cl = (CellLayout)getChildAt(i); 2389 2390 final float[] touchXy = mTempTouchCoordinates; 2391 touchXy[0] = originX + offsetX; 2392 touchXy[1] = originY + offsetY; 2393 2394 // Transform the touch coordinates to the CellLayout's local coordinates 2395 // If the touch point is within the bounds of the cell layout, we can return immediately 2396 cl.getMatrix().invert(mTempInverseMatrix); 2397 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2398 2399 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2400 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2401 return cl; 2402 } 2403 2404 if (overlaps(cl, dragView, originX, originY, mTempInverseMatrix)) { 2405 // Get the center of the cell layout in screen coordinates 2406 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2407 cellLayoutCenter[0] = cl.getWidth()/2; 2408 cellLayoutCenter[1] = cl.getHeight()/2; 2409 mapPointFromChildToSelf(cl, cellLayoutCenter); 2410 2411 touchXy[0] = originX + offsetX; 2412 touchXy[1] = originY + offsetY; 2413 2414 // Calculate the distance between the center of the CellLayout 2415 // and the touch point 2416 float dist = squaredDistance(touchXy, cellLayoutCenter); 2417 2418 if (dist < smallestDistSoFar) { 2419 smallestDistSoFar = dist; 2420 bestMatchingScreen = cl; 2421 } 2422 } 2423 } 2424 return bestMatchingScreen; 2425 } 2426 2427 public void onDragOver(DragSource source, int x, int y, int xOffset, int yOffset, 2428 DragView dragView, Object dragInfo) { 2429 // When touch is inside the scroll area, skip dragOver actions for the current screen 2430 if (!mInScrollArea) { 2431 CellLayout layout; 2432 int originX = x - xOffset; 2433 int originY = y - yOffset; 2434 boolean shrunken = mIsSmall || mIsInUnshrinkAnimation; 2435 if (shrunken) { 2436 mLastDragView = dragView; 2437 mLastDragOriginX = originX; 2438 mLastDragOriginY = originY; 2439 mLastDragXOffset = xOffset; 2440 mLastDragYOffset = yOffset; 2441 layout = findMatchingPageForDragOver(dragView, originX, originY, xOffset, yOffset); 2442 2443 if (layout != mDragTargetLayout) { 2444 if (mDragTargetLayout != null) { 2445 mDragTargetLayout.setIsDragOverlapping(false); 2446 mSpringLoadedDragController.onDragExit(); 2447 } 2448 mDragTargetLayout = layout; 2449 if (mDragTargetLayout != null && mDragTargetLayout.getAcceptsDrops()) { 2450 mDragTargetLayout.setIsDragOverlapping(true); 2451 mSpringLoadedDragController.onDragEnter( 2452 mDragTargetLayout, mShrinkState == ShrinkState.SPRING_LOADED); 2453 } 2454 } 2455 } else { 2456 layout = getCurrentDropLayout(); 2457 if (layout != mDragTargetLayout) { 2458 if (mDragTargetLayout != null) { 2459 mDragTargetLayout.onDragExit(); 2460 } 2461 layout.onDragEnter(); 2462 mDragTargetLayout = layout; 2463 } 2464 } 2465 if (!shrunken || mShrinkState == ShrinkState.SPRING_LOADED) { 2466 layout = getCurrentDropLayout(); 2467 2468 final ItemInfo item = (ItemInfo)dragInfo; 2469 if (dragInfo instanceof LauncherAppWidgetInfo) { 2470 LauncherAppWidgetInfo widgetInfo = (LauncherAppWidgetInfo)dragInfo; 2471 2472 if (widgetInfo.spanX == -1) { 2473 // Calculate the grid spans needed to fit this widget 2474 int[] spans = layout.rectToCell( 2475 widgetInfo.minWidth, widgetInfo.minHeight, null); 2476 item.spanX = spans[0]; 2477 item.spanY = spans[1]; 2478 } 2479 } 2480 2481 if (source instanceof AllAppsPagedView) { 2482 // This is a hack to fix the point used to determine which cell an icon from 2483 // the all apps screen is over 2484 if (item != null && item.spanX == 1 && layout != null) { 2485 int dragRegionLeft = (dragView.getWidth() - layout.getCellWidth()) / 2; 2486 2487 originX += dragRegionLeft - dragView.getDragRegionLeft(); 2488 if (dragView.getDragRegionWidth() != layout.getCellWidth()) { 2489 dragView.setDragRegion(dragView.getDragRegionLeft(), 2490 dragView.getDragRegionTop(), 2491 layout.getCellWidth(), 2492 dragView.getDragRegionHeight()); 2493 } 2494 } 2495 } else if (source == this) { 2496 // When dragging from the workspace, the drag view is slightly bigger than 2497 // the original view, and offset vertically. Adjust to account for this. 2498 final View origView = mDragInfo.cell; 2499 originX += (dragView.getMeasuredWidth() - origView.getWidth()) / 2; 2500 originY += (dragView.getMeasuredHeight() - origView.getHeight()) / 2 2501 + dragView.getOffsetY(); 2502 } 2503 2504 if (mDragTargetLayout != null) { 2505 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2506 float[] localOrigin = { originX, originY }; 2507 mapPointFromSelfToChild(mDragTargetLayout, localOrigin, null); 2508 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2509 (int) localOrigin[0], (int) localOrigin[1], item.spanX, item.spanY); 2510 } 2511 } 2512 } 2513 } 2514 2515 private void doDragExit() { 2516 mWasSpringLoadedOnDragExit = mShrinkState == ShrinkState.SPRING_LOADED; 2517 if (mDragTargetLayout != null) { 2518 mDragTargetLayout.onDragExit(); 2519 } 2520 if (!mIsPageMoving) { 2521 hideOutlines(); 2522 } 2523 if (mShrinkState == ShrinkState.SPRING_LOADED) { 2524 mLauncher.exitSpringLoadedDragMode(); 2525 } 2526 clearAllHovers(); 2527 } 2528 2529 public void onDragExit(DragSource source, int x, int y, int xOffset, 2530 int yOffset, DragView dragView, Object dragInfo) { 2531 doDragExit(); 2532 } 2533 2534 @Override 2535 public void getHitRect(Rect outRect) { 2536 // We want the workspace to have the whole area of the display (it will find the correct 2537 // cell layout to drop to in the existing drag/drop logic. 2538 final Display d = mLauncher.getWindowManager().getDefaultDisplay(); 2539 outRect.set(0, 0, d.getWidth(), d.getHeight()); 2540 } 2541 2542 /** 2543 * Add the item specified by dragInfo to the given layout. 2544 * @return true if successful 2545 */ 2546 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2547 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2548 onDropExternal(-1, -1, (ItemInfo) dragInfo, (CellLayout) layout, false); 2549 return true; 2550 } 2551 mLauncher.showOutOfSpaceMessage(); 2552 return false; 2553 } 2554 2555 /** 2556 * Drop an item that didn't originate on one of the workspace screens. 2557 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2558 * come from another app altogether. 2559 * 2560 * NOTE: This can also be called when we are outside of a drag event, when we want 2561 * to add an item to one of the workspace screens. 2562 */ 2563 private void onDropExternal(int x, int y, Object dragInfo, 2564 CellLayout cellLayout, boolean insertAtFirst) { 2565 int screen = indexOfChild(cellLayout); 2566 if (dragInfo instanceof PendingAddItemInfo) { 2567 PendingAddItemInfo info = (PendingAddItemInfo) dragInfo; 2568 // When dragging and dropping from customization tray, we deal with creating 2569 // widgets/shortcuts/folders in a slightly different way 2570 // Only set touchXY if you are supporting spring loaded adding of items 2571 int[] touchXY = new int[2]; 2572 touchXY[0] = x; 2573 touchXY[1] = y; 2574 switch (info.itemType) { 2575 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 2576 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) info, screen, touchXY); 2577 break; 2578 case LauncherSettings.Favorites.ITEM_TYPE_LIVE_FOLDER: 2579 mLauncher.addLiveFolderFromDrop(info.componentName, screen, touchXY); 2580 break; 2581 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2582 mLauncher.processShortcutFromDrop(info.componentName, screen, touchXY); 2583 break; 2584 default: 2585 throw new IllegalStateException("Unknown item type: " + info.itemType); 2586 } 2587 cellLayout.onDragExit(); 2588 } else { 2589 // This is for other drag/drop cases, like dragging from All Apps 2590 ItemInfo info = (ItemInfo) dragInfo; 2591 View view = null; 2592 2593 switch (info.itemType) { 2594 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 2595 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2596 if (info.container == NO_ID && info instanceof ApplicationInfo) { 2597 // Came from all apps -- make a copy 2598 info = new ShortcutInfo((ApplicationInfo) info); 2599 } 2600 view = mLauncher.createShortcut(R.layout.application, cellLayout, 2601 (ShortcutInfo) info); 2602 break; 2603 case LauncherSettings.Favorites.ITEM_TYPE_USER_FOLDER: 2604 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, 2605 cellLayout, (UserFolderInfo) info, mIconCache); 2606 break; 2607 default: 2608 throw new IllegalStateException("Unknown item type: " + info.itemType); 2609 } 2610 2611 mTargetCell = new int[2]; 2612 if (x != -1 && y != -1) { 2613 // when dragging and dropping, just find the closest free spot 2614 cellLayout.findNearestVacantArea(x, y, 1, 1, mTargetCell); 2615 } else { 2616 cellLayout.findCellForSpan(mTargetCell, 1, 1); 2617 } 2618 addInScreen(view, indexOfChild(cellLayout), mTargetCell[0], 2619 mTargetCell[1], info.spanX, info.spanY, insertAtFirst); 2620 boolean animateDrop = !mWasSpringLoadedOnDragExit; 2621 cellLayout.onDropChild(view, animateDrop); 2622 cellLayout.animateDrop(); 2623 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2624 2625 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 2626 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2627 lp.cellX, lp.cellY); 2628 } 2629 } 2630 2631 /** 2632 * Return the current {@link CellLayout}, correctly picking the destination 2633 * screen while a scroll is in progress. 2634 */ 2635 private CellLayout getCurrentDropLayout() { 2636 // if we're currently small, use findMatchingPageForDragOver instead 2637 if (mIsSmall) return null; 2638 int index = mScroller.isFinished() ? mCurrentPage : mNextPage; 2639 return (CellLayout) getChildAt(index); 2640 } 2641 2642 /** 2643 * Return the current CellInfo describing our current drag; this method exists 2644 * so that Launcher can sync this object with the correct info when the activity is created/ 2645 * destroyed 2646 * 2647 */ 2648 public CellLayout.CellInfo getDragInfo() { 2649 return mDragInfo; 2650 } 2651 2652 /** 2653 * Calculate the nearest cell where the given object would be dropped. 2654 */ 2655 private int[] findNearestVacantArea(int pixelX, int pixelY, 2656 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 2657 2658 int localPixelX = pixelX - (layout.getLeft() - mScrollX); 2659 int localPixelY = pixelY - (layout.getTop() - mScrollY); 2660 2661 // Find the best target drop location 2662 return layout.findNearestVacantArea( 2663 localPixelX, localPixelY, spanX, spanY, ignoreView, recycle); 2664 } 2665 2666 void setLauncher(Launcher launcher) { 2667 mLauncher = launcher; 2668 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 2669 2670 mCustomizationDrawer = mLauncher.findViewById(R.id.customization_drawer); 2671 if (mCustomizationDrawer != null) { 2672 mCustomizationDrawerContent = 2673 mCustomizationDrawer.findViewById(com.android.internal.R.id.tabcontent); 2674 } 2675 } 2676 2677 public void setDragController(DragController dragController) { 2678 mDragController = dragController; 2679 } 2680 2681 /** 2682 * Called at the end of a drag which originated on the workspace. 2683 */ 2684 public void onDropCompleted(View target, boolean success) { 2685 if (success) { 2686 if (target != this && mDragInfo != null) { 2687 final CellLayout cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 2688 cellLayout.removeView(mDragInfo.cell); 2689 if (mDragInfo.cell instanceof DropTarget) { 2690 mDragController.removeDropTarget((DropTarget)mDragInfo.cell); 2691 } 2692 // final Object tag = mDragInfo.cell.getTag(); 2693 } 2694 } else if (mDragInfo != null) { 2695 // NOTE: When 'success' is true, onDragExit is called by the DragController before 2696 // calling onDropCompleted(). We call it ourselves here, but maybe this should be 2697 // moved into DragController.cancelDrag(). 2698 doDragExit(); 2699 ((CellLayout) getChildAt(mDragInfo.screen)).onDropChild(mDragInfo.cell, false); 2700 } 2701 mLauncher.unlockScreenOrientation(); 2702 mDragOutline = null; 2703 mDragInfo = null; 2704 } 2705 2706 @Override 2707 public void onDragViewVisible() { 2708 ((View) mDragInfo.cell).setVisibility(View.GONE); 2709 } 2710 2711 public boolean isDropEnabled() { 2712 return true; 2713 } 2714 2715 @Override 2716 protected void onRestoreInstanceState(Parcelable state) { 2717 super.onRestoreInstanceState(state); 2718 Launcher.setScreen(mCurrentPage); 2719 } 2720 2721 @Override 2722 public void scrollLeft() { 2723 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2724 super.scrollLeft(); 2725 } 2726 } 2727 2728 @Override 2729 public void scrollRight() { 2730 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2731 super.scrollRight(); 2732 } 2733 } 2734 2735 @Override 2736 public void onEnterScrollArea(int direction) { 2737 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2738 mInScrollArea = true; 2739 mPendingScrollDirection = direction; 2740 2741 final int page = mCurrentPage + (direction == DragController.SCROLL_LEFT ? -1 : 1); 2742 final CellLayout layout = (CellLayout) getChildAt(page); 2743 2744 if (layout != null) { 2745 layout.setIsDragOverlapping(true); 2746 2747 if (mDragTargetLayout != null) { 2748 mDragTargetLayout.onDragExit(); 2749 mDragTargetLayout = null; 2750 } 2751 } 2752 } 2753 } 2754 2755 private void clearAllHovers() { 2756 final int childCount = getChildCount(); 2757 for (int i = 0; i < childCount; i++) { 2758 ((CellLayout) getChildAt(i)).setIsDragOverlapping(false); 2759 } 2760 mSpringLoadedDragController.onDragExit(); 2761 } 2762 2763 @Override 2764 public void onExitScrollArea() { 2765 if (mInScrollArea) { 2766 mInScrollArea = false; 2767 mPendingScrollDirection = DragController.SCROLL_NONE; 2768 clearAllHovers(); 2769 } 2770 } 2771 2772 public Folder getFolderForTag(Object tag) { 2773 final int screenCount = getChildCount(); 2774 for (int screen = 0; screen < screenCount; screen++) { 2775 ViewGroup currentScreen = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 2776 int count = currentScreen.getChildCount(); 2777 for (int i = 0; i < count; i++) { 2778 View child = currentScreen.getChildAt(i); 2779 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 2780 if (lp.cellHSpan == 4 && lp.cellVSpan == 4 && child instanceof Folder) { 2781 Folder f = (Folder) child; 2782 if (f.getInfo() == tag && f.getInfo().opened) { 2783 return f; 2784 } 2785 } 2786 } 2787 } 2788 return null; 2789 } 2790 2791 public View getViewForTag(Object tag) { 2792 int screenCount = getChildCount(); 2793 for (int screen = 0; screen < screenCount; screen++) { 2794 ViewGroup currentScreen = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 2795 int count = currentScreen.getChildCount(); 2796 for (int i = 0; i < count; i++) { 2797 View child = currentScreen.getChildAt(i); 2798 if (child.getTag() == tag) { 2799 return child; 2800 } 2801 } 2802 } 2803 return null; 2804 } 2805 2806 2807 void removeItems(final ArrayList<ApplicationInfo> apps) { 2808 final int screenCount = getChildCount(); 2809 final PackageManager manager = getContext().getPackageManager(); 2810 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 2811 2812 final HashSet<String> packageNames = new HashSet<String>(); 2813 final int appCount = apps.size(); 2814 for (int i = 0; i < appCount; i++) { 2815 packageNames.add(apps.get(i).componentName.getPackageName()); 2816 } 2817 2818 for (int i = 0; i < screenCount; i++) { 2819 final ViewGroup layout = ((CellLayout) getChildAt(i)).getChildrenLayout(); 2820 2821 // Avoid ANRs by treating each screen separately 2822 post(new Runnable() { 2823 public void run() { 2824 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 2825 childrenToRemove.clear(); 2826 2827 int childCount = layout.getChildCount(); 2828 for (int j = 0; j < childCount; j++) { 2829 final View view = layout.getChildAt(j); 2830 Object tag = view.getTag(); 2831 2832 if (tag instanceof ShortcutInfo) { 2833 final ShortcutInfo info = (ShortcutInfo) tag; 2834 final Intent intent = info.intent; 2835 final ComponentName name = intent.getComponent(); 2836 2837 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 2838 for (String packageName: packageNames) { 2839 if (packageName.equals(name.getPackageName())) { 2840 LauncherModel.deleteItemFromDatabase(mLauncher, info); 2841 childrenToRemove.add(view); 2842 } 2843 } 2844 } 2845 } else if (tag instanceof UserFolderInfo) { 2846 final UserFolderInfo info = (UserFolderInfo) tag; 2847 final ArrayList<ShortcutInfo> contents = info.contents; 2848 final ArrayList<ShortcutInfo> toRemove = new ArrayList<ShortcutInfo>(1); 2849 final int contentsCount = contents.size(); 2850 boolean removedFromFolder = false; 2851 2852 for (int k = 0; k < contentsCount; k++) { 2853 final ShortcutInfo appInfo = contents.get(k); 2854 final Intent intent = appInfo.intent; 2855 final ComponentName name = intent.getComponent(); 2856 2857 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 2858 for (String packageName: packageNames) { 2859 if (packageName.equals(name.getPackageName())) { 2860 toRemove.add(appInfo); 2861 LauncherModel.deleteItemFromDatabase(mLauncher, appInfo); 2862 removedFromFolder = true; 2863 } 2864 } 2865 } 2866 } 2867 2868 contents.removeAll(toRemove); 2869 if (removedFromFolder) { 2870 final Folder folder = getOpenFolder(); 2871 if (folder != null) 2872 folder.notifyDataSetChanged(); 2873 } 2874 } else if (tag instanceof LiveFolderInfo) { 2875 final LiveFolderInfo info = (LiveFolderInfo) tag; 2876 final Uri uri = info.uri; 2877 final ProviderInfo providerInfo = manager.resolveContentProvider( 2878 uri.getAuthority(), 0); 2879 2880 if (providerInfo != null) { 2881 for (String packageName: packageNames) { 2882 if (packageName.equals(providerInfo.packageName)) { 2883 LauncherModel.deleteItemFromDatabase(mLauncher, info); 2884 childrenToRemove.add(view); 2885 } 2886 } 2887 } 2888 } else if (tag instanceof LauncherAppWidgetInfo) { 2889 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 2890 final AppWidgetProviderInfo provider = 2891 widgets.getAppWidgetInfo(info.appWidgetId); 2892 if (provider != null) { 2893 for (String packageName: packageNames) { 2894 if (packageName.equals(provider.provider.getPackageName())) { 2895 LauncherModel.deleteItemFromDatabase(mLauncher, info); 2896 childrenToRemove.add(view); 2897 } 2898 } 2899 } 2900 } 2901 } 2902 2903 childCount = childrenToRemove.size(); 2904 for (int j = 0; j < childCount; j++) { 2905 View child = childrenToRemove.get(j); 2906 layout.removeViewInLayout(child); 2907 if (child instanceof DropTarget) { 2908 mDragController.removeDropTarget((DropTarget)child); 2909 } 2910 } 2911 2912 if (childCount > 0) { 2913 layout.requestLayout(); 2914 layout.invalidate(); 2915 } 2916 } 2917 }); 2918 } 2919 } 2920 2921 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 2922 final int screenCount = getChildCount(); 2923 for (int i = 0; i < screenCount; i++) { 2924 final ViewGroup layout = ((CellLayout) getChildAt(i)).getChildrenLayout(); 2925 int childCount = layout.getChildCount(); 2926 for (int j = 0; j < childCount; j++) { 2927 final View view = layout.getChildAt(j); 2928 Object tag = view.getTag(); 2929 if (tag instanceof ShortcutInfo) { 2930 ShortcutInfo info = (ShortcutInfo)tag; 2931 // We need to check for ACTION_MAIN otherwise getComponent() might 2932 // return null for some shortcuts (for instance, for shortcuts to 2933 // web pages.) 2934 final Intent intent = info.intent; 2935 final ComponentName name = intent.getComponent(); 2936 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 2937 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 2938 final int appCount = apps.size(); 2939 for (int k = 0; k < appCount; k++) { 2940 ApplicationInfo app = apps.get(k); 2941 if (app.componentName.equals(name)) { 2942 info.setIcon(mIconCache.getIcon(info.intent)); 2943 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 2944 new FastBitmapDrawable(info.getIcon(mIconCache)), 2945 null, null); 2946 } 2947 } 2948 } 2949 } 2950 } 2951 } 2952 } 2953 2954 void moveToDefaultScreen(boolean animate) { 2955 if (mIsSmall || mIsInUnshrinkAnimation) { 2956 mLauncher.showWorkspace(animate, (CellLayout)getChildAt(mDefaultPage)); 2957 } else if (animate) { 2958 snapToPage(mDefaultPage); 2959 } else { 2960 setCurrentPage(mDefaultPage); 2961 } 2962 getChildAt(mDefaultPage).requestFocus(); 2963 } 2964 2965 void setIndicators(Drawable previous, Drawable next) { 2966 mPreviousIndicator = previous; 2967 mNextIndicator = next; 2968 previous.setLevel(mCurrentPage); 2969 next.setLevel(mCurrentPage); 2970 } 2971 2972 @Override 2973 public void syncPages() { 2974 } 2975 2976 @Override 2977 public void syncPageItems(int page) { 2978 } 2979 2980} 2981