Workspace.java revision e0310965022e7a1adb7ad489505d404186608689
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 java.util.ArrayList; 20import java.util.HashSet; 21import java.util.List; 22 23import android.animation.Animator; 24import android.animation.AnimatorListenerAdapter; 25import android.animation.AnimatorSet; 26import android.animation.ObjectAnimator; 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.TabHost; 66import android.widget.TabWidget; 67import android.widget.TextView; 68import android.widget.Toast; 69 70import com.android.launcher.R; 71import com.android.launcher2.InstallWidgetReceiver.WidgetMimeTypeHandlerData; 72 73/** 74 * The workspace is a wide area with a wallpaper and a finite number of pages. 75 * Each page contains a number of icons, folders or widgets the user can 76 * interact with. A workspace is meant to be used with a fixed width only. 77 */ 78public class Workspace extends SmoothPagedView 79 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 80 View.OnClickListener { 81 @SuppressWarnings({"UnusedDeclaration"}) 82 private static final String TAG = "Launcher.Workspace"; 83 84 // This is how much the workspace shrinks when we enter all apps or 85 // customization mode 86 private static final float SHRINK_FACTOR = 0.16f; 87 88 // How much the screens shrink when we enter spring loaded drag mode 89 private static final float SPRING_LOADED_DRAG_SHRINK_FACTOR = 0.7f; 90 91 // Y rotation to apply to the workspace screens 92 private static final float WORKSPACE_ROTATION = 12.5f; 93 94 // These are extra scale factors to apply to the mini home screens 95 // so as to achieve the desired transform 96 private static final float EXTRA_SCALE_FACTOR_0 = 0.972f; 97 private static final float EXTRA_SCALE_FACTOR_1 = 1.0f; 98 private static final float EXTRA_SCALE_FACTOR_2 = 1.10f; 99 100 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 101 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 102 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 103 104 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 105 private static final int BACKGROUND_FADE_IN_DURATION = 350; 106 107 // These animators are used to fade the children's outlines 108 private ObjectAnimator mChildrenOutlineFadeInAnimation; 109 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 110 private float mChildrenOutlineAlpha = 0; 111 112 // These properties refer to the background protection gradient used for AllApps and Customize 113 private ValueAnimator mBackgroundFadeInAnimation; 114 private ValueAnimator mBackgroundFadeOutAnimation; 115 private Drawable mBackground; 116 private Drawable mCustomizeTrayBackground; 117 boolean mDrawBackground = true; 118 private boolean mDrawCustomizeTrayBackground; 119 private float mBackgroundAlpha = 0; 120 private float mOverScrollMaxBackgroundAlpha = 0.0f; 121 private int mOverScrollPageIndex = -1; 122 123 private View mCustomizationDrawer; 124 private View mCustomizationDrawerContent; 125 private int[] mCustomizationDrawerPos = new int[2]; 126 private float[] mCustomizationDrawerTransformedPos = new float[2]; 127 128 private final WallpaperManager mWallpaperManager; 129 private IBinder mWindowToken; 130 131 private int mDefaultPage; 132 133 private boolean mIsDragInProcess = false; 134 private boolean mIsDraggingOverIcon = false; 135 136 /** 137 * CellInfo for the cell that is currently being dragged 138 */ 139 private CellLayout.CellInfo mDragInfo; 140 141 /** 142 * Target drop area calculated during last acceptDrop call. 143 */ 144 private int[] mTargetCell = null; 145 146 /** 147 * The CellLayout that is currently being dragged over 148 */ 149 private CellLayout mDragTargetLayout = null; 150 151 private Launcher mLauncher; 152 private IconCache mIconCache; 153 private DragController mDragController; 154 155 // These are temporary variables to prevent having to allocate a new object just to 156 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 157 private int[] mTempCell = new int[2]; 158 private int[] mTempEstimate = new int[2]; 159 private float[] mDragViewVisualCenter = new float[2]; 160 private float[] mTempOriginXY = new float[2]; 161 private float[] mTempDragCoordinates = new float[2]; 162 private float[] mTempTouchCoordinates = new float[2]; 163 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 164 private float[] mTempDragBottomRightCoordinates = new float[2]; 165 private Matrix mTempInverseMatrix = new Matrix(); 166 167 private SpringLoadedDragController mSpringLoadedDragController; 168 169 private static final int DEFAULT_CELL_COUNT_X = 4; 170 private static final int DEFAULT_CELL_COUNT_Y = 4; 171 172 private Drawable mPreviousIndicator; 173 private Drawable mNextIndicator; 174 175 // State variable that indicates whether the pages are small (ie when you're 176 // in all apps or customize mode) 177 private boolean mIsSmall = false; 178 private boolean mIsInUnshrinkAnimation = false; 179 private AnimatorListener mShrinkAnimationListener; 180 private AnimatorListener mUnshrinkAnimationListener; 181 enum ShrinkState { TOP, SPRING_LOADED, MIDDLE, BOTTOM_HIDDEN, BOTTOM_VISIBLE }; 182 private ShrinkState mShrinkState; 183 private boolean mWasSpringLoadedOnDragExit = false; 184 private boolean mWaitingToShrink = false; 185 private ShrinkState mWaitingToShrinkState; 186 private AnimatorSet mAnimator; 187 188 /** Is the user is dragging an item near the edge of a page? */ 189 private boolean mInScrollArea = false; 190 191 /** If mInScrollArea is true, the direction of the scroll. */ 192 private int mPendingScrollDirection = DragController.SCROLL_NONE; 193 194 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 195 private Bitmap mDragOutline = null; 196 private final Rect mTempRect = new Rect(); 197 private final int[] mTempXY = new int[2]; 198 199 private ValueAnimator mDropAnim = null; 200 private TimeInterpolator mQuintEaseOutInterpolator = new DecelerateInterpolator(2.5f); 201 private View mDropView = null; 202 private int[] mDropViewPos = new int[] { -1, -1 }; 203 204 // Paint used to draw external drop outline 205 private final Paint mExternalDragOutlinePaint = new Paint(); 206 207 // Camera and Matrix used to determine the final position of a neighboring CellLayout 208 private final Matrix mMatrix = new Matrix(); 209 private final Camera mCamera = new Camera(); 210 private final float mTempFloat2[] = new float[2]; 211 212 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 213 int mWallpaperWidth; 214 int mWallpaperHeight; 215 WallpaperOffsetInterpolator mWallpaperOffset; 216 boolean mUpdateWallpaperOffsetImmediately = false; 217 boolean mSyncWallpaperOffsetWithScroll = true; 218 private Runnable mDelayedResizeRunnable; 219 220 // info about the last drag 221 private DragView mLastDragView; 222 private int mLastDragOriginX; 223 private int mLastDragOriginY; 224 private int mLastDragXOffset; 225 private int mLastDragYOffset; 226 227 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 228 private float mXDown; 229 private float mYDown; 230 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 231 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 232 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 233 234 /** 235 * Used to inflate the Workspace from XML. 236 * 237 * @param context The application's context. 238 * @param attrs The attributes set containing the Workspace's customization values. 239 */ 240 public Workspace(Context context, AttributeSet attrs) { 241 this(context, attrs, 0); 242 } 243 244 /** 245 * Used to inflate the Workspace from XML. 246 * 247 * @param context The application's context. 248 * @param attrs The attributes set containing the Workspace's customization values. 249 * @param defStyle Unused. 250 */ 251 public Workspace(Context context, AttributeSet attrs, int defStyle) { 252 super(context, attrs, defStyle); 253 mContentIsRefreshable = false; 254 255 if (!LauncherApplication.isScreenXLarge()) { 256 mFadeInAdjacentScreens = false; 257 } 258 259 mWallpaperManager = WallpaperManager.getInstance(context); 260 261 TypedArray a = context.obtainStyledAttributes(attrs, 262 R.styleable.Workspace, defStyle, 0); 263 int cellCountX = a.getInt(R.styleable.Workspace_cellCountX, DEFAULT_CELL_COUNT_X); 264 int cellCountY = a.getInt(R.styleable.Workspace_cellCountY, DEFAULT_CELL_COUNT_Y); 265 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 266 a.recycle(); 267 268 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 269 setHapticFeedbackEnabled(false); 270 271 initWorkspace(); 272 273 // Disable multitouch across the workspace/all apps/customize tray 274 setMotionEventSplittingEnabled(true); 275 } 276 277 /** 278 * Initializes various states for this workspace. 279 */ 280 protected void initWorkspace() { 281 Context context = getContext(); 282 mCurrentPage = mDefaultPage; 283 Launcher.setScreen(mCurrentPage); 284 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 285 mIconCache = app.getIconCache(); 286 mExternalDragOutlinePaint.setAntiAlias(true); 287 setWillNotDraw(false); 288 289 try { 290 final Resources res = getResources(); 291 mBackground = res.getDrawable(R.drawable.all_apps_bg_gradient); 292 mCustomizeTrayBackground = res.getDrawable(R.drawable.customize_bg_gradient); 293 } catch (Resources.NotFoundException e) { 294 // In this case, we will skip drawing background protection 295 } 296 297 mUnshrinkAnimationListener = new AnimatorListenerAdapter() { 298 @Override 299 public void onAnimationStart(Animator animation) { 300 mIsInUnshrinkAnimation = true; 301 } 302 303 @Override 304 public void onAnimationEnd(Animator animation) { 305 mIsInUnshrinkAnimation = false; 306 mSyncWallpaperOffsetWithScroll = true; 307 if (mShrinkState == ShrinkState.SPRING_LOADED) { 308 View layout = null; 309 if (mLastDragView != null) { 310 layout = findMatchingPageForDragOver(mLastDragView, mLastDragOriginX, 311 mLastDragOriginY, mLastDragXOffset, mLastDragYOffset); 312 } 313 mSpringLoadedDragController.onEnterSpringLoadedMode(layout == null); 314 } else { 315 mDrawCustomizeTrayBackground = false; 316 } 317 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 318 mAnimator = null; 319 enableChildrenLayers(false); 320 } 321 }; 322 mShrinkAnimationListener = new AnimatorListenerAdapter() { 323 @Override 324 public void onAnimationStart(Animator animation) { 325 enableChildrenLayers(true); 326 } 327 @Override 328 public void onAnimationEnd(Animator animation) { 329 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 330 mAnimator = null; 331 } 332 }; 333 mSnapVelocity = 600; 334 mWallpaperOffset = new WallpaperOffsetInterpolator(); 335 } 336 337 @Override 338 protected int getScrollMode() { 339 if (LauncherApplication.isScreenXLarge()) { 340 return SmoothPagedView.X_LARGE_MODE; 341 } else { 342 return SmoothPagedView.DEFAULT_MODE; 343 } 344 } 345 346 private void onAddView(View child) { 347 if (!(child instanceof CellLayout)) { 348 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 349 } 350 ((CellLayout) child).setOnInterceptTouchListener(this); 351 child.setOnClickListener(this); 352 child.setClickable(true); 353 } 354 @Override 355 public void addView(View child, int index, LayoutParams params) { 356 onAddView(child); 357 super.addView(child, index, params); 358 } 359 360 @Override 361 public void addView(View child) { 362 onAddView(child); 363 super.addView(child); 364 } 365 366 @Override 367 public void addView(View child, int index) { 368 onAddView(child); 369 super.addView(child, index); 370 } 371 372 @Override 373 public void addView(View child, int width, int height) { 374 onAddView(child); 375 super.addView(child, width, height); 376 } 377 378 @Override 379 public void addView(View child, LayoutParams params) { 380 onAddView(child); 381 super.addView(child, params); 382 } 383 384 /** 385 * @return The open folder on the current screen, or null if there is none 386 */ 387 Folder getOpenFolder() { 388 ViewGroup currentPage = ((CellLayout) getChildAt(mCurrentPage)).getChildrenLayout(); 389 int count = currentPage.getChildCount(); 390 for (int i = 0; i < count; i++) { 391 View child = currentPage.getChildAt(i); 392 if (child instanceof Folder) { 393 Folder folder = (Folder) child; 394 if (folder.getInfo().opened) 395 return folder; 396 } 397 } 398 return null; 399 } 400 401 ArrayList<Folder> getOpenFolders() { 402 final int screenCount = getChildCount(); 403 ArrayList<Folder> folders = new ArrayList<Folder>(screenCount); 404 405 for (int screen = 0; screen < screenCount; screen++) { 406 ViewGroup currentPage = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 407 int count = currentPage.getChildCount(); 408 for (int i = 0; i < count; i++) { 409 View child = currentPage.getChildAt(i); 410 if (child instanceof Folder) { 411 Folder folder = (Folder) child; 412 if (folder.getInfo().opened) 413 folders.add(folder); 414 break; 415 } 416 } 417 } 418 return folders; 419 } 420 421 boolean isTouchActive() { 422 return mTouchState != TOUCH_STATE_REST; 423 } 424 425 /** 426 * Adds the specified child in the specified screen. The position and dimension of 427 * the child are defined by x, y, spanX and spanY. 428 * 429 * @param child The child to add in one of the workspace's screens. 430 * @param screen The screen in which to add the child. 431 * @param x The X position of the child in the screen's grid. 432 * @param y The Y position of the child in the screen's grid. 433 * @param spanX The number of cells spanned horizontally by the child. 434 * @param spanY The number of cells spanned vertically by the child. 435 */ 436 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY) { 437 addInScreen(child, screen, x, y, spanX, spanY, false); 438 } 439 440 void addInFullScreen(View child, int screen) { 441 addInScreen(child, screen, 0, 0, -1, -1); 442 } 443 444 /** 445 * Adds the specified child in the specified screen. The position and dimension of 446 * the child are defined by x, y, spanX and spanY. 447 * 448 * @param child The child to add in one of the workspace's screens. 449 * @param screen The screen in which to add the child. 450 * @param x The X position of the child in the screen's grid. 451 * @param y The Y position of the child in the screen's grid. 452 * @param spanX The number of cells spanned horizontally by the child. 453 * @param spanY The number of cells spanned vertically by the child. 454 * @param insert When true, the child is inserted at the beginning of the children list. 455 */ 456 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY, boolean insert) { 457 if (screen < 0 || screen >= getChildCount()) { 458 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 459 + " (was " + screen + "); skipping child"); 460 return; 461 } 462 463 final CellLayout group = (CellLayout) getChildAt(screen); 464 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 465 if (lp == null) { 466 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 467 } else { 468 lp.cellX = x; 469 lp.cellY = y; 470 lp.cellHSpan = spanX; 471 lp.cellVSpan = spanY; 472 } 473 474 // Get the canonical child id to uniquely represent this view in this screen 475 int childId = LauncherModel.getCellLayoutChildId(-1, screen, x, y, spanX, spanY); 476 boolean markCellsAsOccupied = !(child instanceof Folder); 477 if (!group.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 478 // TODO: This branch occurs when the workspace is adding views 479 // outside of the defined grid 480 // maybe we should be deleting these items from the LauncherModel? 481 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 482 } 483 484 if (!(child instanceof Folder)) { 485 child.setHapticFeedbackEnabled(false); 486 child.setOnLongClickListener(mLongClickListener); 487 } 488 if (child instanceof DropTarget) { 489 mDragController.addDropTarget((DropTarget) child); 490 } 491 } 492 493 /** 494 * Check if the point (x, y) hits a given page. 495 */ 496 private boolean hitsPage(int index, float x, float y) { 497 final View page = getChildAt(index); 498 if (page != null) { 499 float[] localXY = { x, y }; 500 mapPointFromSelfToChild(page, localXY); 501 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 502 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 503 } 504 return false; 505 } 506 507 @Override 508 protected boolean hitsPreviousPage(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 @Override 516 protected boolean hitsNextPage(float x, float y) { 517 // mNextPage is set to INVALID_PAGE whenever we are stationary. 518 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 519 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 520 return hitsPage(current + 1, x, y); 521 } 522 523 /** 524 * Called directly from a CellLayout (not by the framework), after we've been added as a 525 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 526 * that it should intercept touch events, which is not something that is normally supported. 527 */ 528 @Override 529 public boolean onTouch(View v, MotionEvent event) { 530 return (mIsSmall || mIsInUnshrinkAnimation); 531 } 532 533 /** 534 * Handle a click event on a CellLayout. 535 */ 536 @Override 537 public void onClick(View cellLayout) { 538 // Only allow clicks on a CellLayout if it is shrunken and visible. 539 if ((mIsSmall || mIsInUnshrinkAnimation) && mShrinkState != ShrinkState.BOTTOM_HIDDEN) { 540 mLauncher.onWorkspaceClick((CellLayout) cellLayout); 541 } 542 } 543 544 protected void onWindowVisibilityChanged (int visibility) { 545 mLauncher.onWindowVisibilityChanged(visibility); 546 } 547 548 @Override 549 public boolean dispatchUnhandledMove(View focused, int direction) { 550 if (mIsSmall || mIsInUnshrinkAnimation) { 551 // when the home screens are shrunken, shouldn't allow side-scrolling 552 return false; 553 } 554 return super.dispatchUnhandledMove(focused, direction); 555 } 556 557 @Override 558 public boolean onInterceptTouchEvent(MotionEvent ev) { 559 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 560 mXDown = ev.getX(); 561 mYDown = ev.getY(); 562 } 563 564 if (mIsSmall || mIsInUnshrinkAnimation) { 565 if (mLauncher.isAllAppsVisible() && mShrinkState == ShrinkState.BOTTOM_HIDDEN) { 566 // Intercept this event so we can show the workspace in full view 567 // when it is clicked on and it is small 568 AllAppsPagedView allApps = (AllAppsPagedView) 569 mLauncher.findViewById(R.id.all_apps_paged_view); 570 if (allApps != null) { 571 allApps.onInterceptTouchEvent(ev); 572 } 573 return true; 574 } 575 return false; 576 } 577 return super.onInterceptTouchEvent(ev); 578 } 579 580 @Override 581 protected void determineScrollingStart(MotionEvent ev) { 582 if (!mIsSmall && !mIsInUnshrinkAnimation) { 583 float deltaX = Math.abs(ev.getX() - mXDown); 584 float deltaY = Math.abs(ev.getY() - mYDown); 585 586 if (Float.compare(deltaX, 0f) == 0) return; 587 588 float slope = deltaY / deltaX; 589 float theta = (float) Math.atan(slope); 590 591 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 592 cancelCurrentPageLongPress(); 593 } 594 595 if (theta > MAX_SWIPE_ANGLE) { 596 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 597 return; 598 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 599 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 600 // increase the touch slop to make it harder to begin scrolling the workspace. This 601 // results in vertically scrolling widgets to more easily. The higher the angle, the 602 // more we increase touch slop. 603 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 604 float extraRatio = (float) 605 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 606 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 607 } else { 608 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 609 super.determineScrollingStart(ev); 610 } 611 } 612 } 613 614 protected void onPageBeginMoving() { 615 if (mNextPage != INVALID_PAGE) { 616 // we're snapping to a particular screen 617 enableChildrenCache(mCurrentPage, mNextPage); 618 } else { 619 // this is when user is actively dragging a particular screen, they might 620 // swipe it either left or right (but we won't advance by more than one screen) 621 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 622 } 623 showOutlines(); 624 } 625 626 protected void onPageEndMoving() { 627 clearChildrenCache(); 628 // Hide the outlines, as long as we're not dragging 629 if (!mDragController.dragging()) { 630 hideOutlines(); 631 } 632 mOverScrollMaxBackgroundAlpha = 0.0f; 633 mOverScrollPageIndex = -1; 634 635 if (mDelayedResizeRunnable != null) { 636 mDelayedResizeRunnable.run(); 637 mDelayedResizeRunnable = null; 638 } 639 } 640 641 @Override 642 protected void notifyPageSwitchListener() { 643 super.notifyPageSwitchListener(); 644 645 if (mPreviousIndicator != null) { 646 // if we know the next page, we show the indication for it right away; it looks 647 // weird if the indicators are lagging 648 int page = mNextPage; 649 if (page == INVALID_PAGE) { 650 page = mCurrentPage; 651 } 652 mPreviousIndicator.setLevel(page); 653 mNextIndicator.setLevel(page); 654 } 655 Launcher.setScreen(mCurrentPage); 656 }; 657 658 // As a ratio of screen height, the total distance we want the parallax effect to span 659 // vertically 660 private float wallpaperTravelToScreenHeightRatio(int width, int height) { 661 return 1.1f; 662 } 663 664 // As a ratio of screen height, the total distance we want the parallax effect to span 665 // horizontally 666 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 667 float aspectRatio = width / (float) height; 668 669 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 670 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 671 // We will use these two data points to extrapolate how much the wallpaper parallax effect 672 // to span (ie travel) at any aspect ratio: 673 674 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 675 final float ASPECT_RATIO_PORTRAIT = 10/16f; 676 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 677 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 678 679 // To find out the desired width at different aspect ratios, we use the following two 680 // formulas, where the coefficient on x is the aspect ratio (width/height): 681 // (16/10)x + y = 1.5 682 // (10/16)x + y = 1.2 683 // We solve for x and y and end up with a final formula: 684 final float x = 685 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 686 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 687 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 688 return x * aspectRatio + y; 689 } 690 691 // The range of scroll values for Workspace 692 private int getScrollRange() { 693 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 694 } 695 696 protected void setWallpaperDimension() { 697 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 698 final int maxDim = Math.max(display.getWidth(), display.getHeight()); 699 final int minDim = Math.min(display.getWidth(), display.getHeight()); 700 701 // We need to ensure that there is enough extra space in the wallpaper for the intended 702 // parallax effects 703 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 704 mWallpaperHeight = (int)(maxDim * wallpaperTravelToScreenHeightRatio(maxDim, minDim)); 705 new Thread("setWallpaperDimension") { 706 public void run() { 707 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 708 } 709 }.start(); 710 } 711 712 public void setVerticalWallpaperOffset(float offset) { 713 mWallpaperOffset.setFinalY(offset); 714 } 715 public float getVerticalWallpaperOffset() { 716 return mWallpaperOffset.getCurrY(); 717 } 718 public void setHorizontalWallpaperOffset(float offset) { 719 mWallpaperOffset.setFinalX(offset); 720 } 721 public float getHorizontalWallpaperOffset() { 722 return mWallpaperOffset.getCurrX(); 723 } 724 725 private float wallpaperOffsetForCurrentScroll() { 726 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 727 final boolean isStaticWallpaper = (mWallpaperManager.getWallpaperInfo() == null); 728 // The wallpaper travel width is how far, from left to right, the wallpaper will move 729 // at this orientation (for example, in portrait mode we don't move all the way to the 730 // edges of the wallpaper, or otherwise the parallax effect would be too strong) 731 int wallpaperTravelWidth = (int) (display.getWidth() * 732 wallpaperTravelToScreenWidthRatio(display.getWidth(), display.getHeight())); 733 if (!isStaticWallpaper) { 734 wallpaperTravelWidth = mWallpaperWidth; 735 } 736 737 // Set wallpaper offset steps (1 / (number of screens - 1)) 738 // We have 3 vertical offset states (centered, and then top/bottom aligned 739 // for all apps/customize) 740 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f / (3 - 1)); 741 742 int scrollRange = getScrollRange(); 743 float scrollProgressOffset = 0; 744 745 // Account for overscroll: you only see the absolute edge of the wallpaper if 746 // you overscroll as far as you can in landscape mode. Only do this for static wallpapers 747 // because live wallpapers (and probably 3rd party wallpaper providers) rely on the offset 748 // being even intervals from 0 to 1 (eg [0, 0.25, 0.5, 0.75, 1]) 749 if (isStaticWallpaper) { 750 int overscrollOffset = (int) (maxOverScroll() * display.getWidth()); 751 scrollProgressOffset += overscrollOffset / (float) getScrollRange(); 752 scrollRange += 2 * overscrollOffset; 753 } 754 755 float scrollProgress = 756 mScrollX / (float) scrollRange + scrollProgressOffset; 757 float offsetInDips = wallpaperTravelWidth * scrollProgress + 758 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 759 float offset = offsetInDips / (float) mWallpaperWidth; 760 return offset; 761 } 762 private void syncWallpaperOffsetWithScroll() { 763 if (LauncherApplication.isScreenXLarge()) { 764 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 765 } 766 } 767 768 public void updateWallpaperOffsetImmediately() { 769 mUpdateWallpaperOffsetImmediately = true; 770 } 771 772 private void updateWallpaperOffsets() { 773 boolean updateNow = false; 774 boolean keepUpdating = true; 775 if (mUpdateWallpaperOffsetImmediately) { 776 updateNow = true; 777 keepUpdating = false; 778 mWallpaperOffset.jumpToFinal(); 779 mUpdateWallpaperOffsetImmediately = false; 780 } else { 781 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 782 } 783 if (updateNow) { 784 if (mWindowToken != null) { 785 mWallpaperManager.setWallpaperOffsets(mWindowToken, 786 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 787 } 788 } 789 if (keepUpdating) { 790 fastInvalidate(); 791 } 792 } 793 794 class WallpaperOffsetInterpolator { 795 float mFinalHorizontalWallpaperOffset = 0.0f; 796 float mFinalVerticalWallpaperOffset = 0.5f; 797 float mHorizontalWallpaperOffset = 0.0f; 798 float mVerticalWallpaperOffset = 0.5f; 799 long mLastWallpaperOffsetUpdateTime; 800 boolean mIsMovingFast; 801 boolean mOverrideHorizontalCatchupConstant; 802 float mHorizontalCatchupConstant = 0.35f; 803 float mVerticalCatchupConstant = 0.35f; 804 805 public WallpaperOffsetInterpolator() { 806 } 807 808 public void setOverrideHorizontalCatchupConstant(boolean override) { 809 mOverrideHorizontalCatchupConstant = override; 810 } 811 812 public void setHorizontalCatchupConstant(float f) { 813 mHorizontalCatchupConstant = f; 814 } 815 816 public void setVerticalCatchupConstant(float f) { 817 mVerticalCatchupConstant = f; 818 } 819 820 public boolean computeScrollOffset() { 821 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 822 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 823 mIsMovingFast = false; 824 return false; 825 } 826 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 827 boolean isLandscape = display.getWidth() > display.getHeight(); 828 829 long currentTime = System.currentTimeMillis(); 830 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 831 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 832 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 833 834 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 835 if (!mIsMovingFast && xdiff > 0.07) { 836 mIsMovingFast = true; 837 } 838 839 float fractionToCatchUpIn1MsHorizontal; 840 if (mOverrideHorizontalCatchupConstant) { 841 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 842 } else if (mIsMovingFast) { 843 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 844 } else { 845 // slow 846 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 847 } 848 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 849 850 851 fractionToCatchUpIn1MsHorizontal /= 33f; 852 fractionToCatchUpIn1MsVertical /= 33f; 853 854 final float UPDATE_THRESHOLD = 0.00001f; 855 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 856 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 857 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 858 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 859 if (jumpToFinalValue) { 860 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 861 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 862 } else { 863 float percentToCatchUpVertical = 864 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 865 float percentToCatchUpHorizontal = 866 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 867 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 868 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 869 } 870 871 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 872 return true; 873 } 874 875 public float getCurrX() { 876 return mHorizontalWallpaperOffset; 877 } 878 879 public float getFinalX() { 880 return mFinalHorizontalWallpaperOffset; 881 } 882 883 public float getCurrY() { 884 return mVerticalWallpaperOffset; 885 } 886 887 public float getFinalY() { 888 return mFinalVerticalWallpaperOffset; 889 } 890 891 public void setFinalX(float x) { 892 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 893 } 894 895 public void setFinalY(float y) { 896 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 897 } 898 899 public void jumpToFinal() { 900 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 901 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 902 } 903 } 904 905 @Override 906 public void computeScroll() { 907 super.computeScroll(); 908 if (mSyncWallpaperOffsetWithScroll) { 909 syncWallpaperOffsetWithScroll(); 910 } 911 } 912 913 void showOutlines() { 914 if (!mIsSmall && !mIsInUnshrinkAnimation) { 915 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 916 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 917 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 918 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 919 mChildrenOutlineFadeInAnimation.start(); 920 } 921 } 922 923 void hideOutlines() { 924 if (!mIsSmall && !mIsInUnshrinkAnimation) { 925 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 926 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 927 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 928 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 929 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 930 mChildrenOutlineFadeOutAnimation.start(); 931 } 932 } 933 934 public void showOutlinesTemporarily() { 935 if (!mIsPageMoving && !isTouchActive()) { 936 snapToPage(mCurrentPage); 937 } 938 } 939 940 public void setChildrenOutlineAlpha(float alpha) { 941 mChildrenOutlineAlpha = alpha; 942 for (int i = 0; i < getChildCount(); i++) { 943 CellLayout cl = (CellLayout) getChildAt(i); 944 cl.setBackgroundAlpha(alpha); 945 } 946 } 947 948 public float getChildrenOutlineAlpha() { 949 return mChildrenOutlineAlpha; 950 } 951 952 void disableBackground() { 953 mDrawBackground = false; 954 } 955 void enableBackground() { 956 mDrawBackground = true; 957 } 958 959 private void showBackgroundGradientForAllApps() { 960 showBackgroundGradient(); 961 mDrawCustomizeTrayBackground = false; 962 } 963 964 private void showBackgroundGradientForCustomizeTray() { 965 showBackgroundGradient(); 966 mDrawCustomizeTrayBackground = true; 967 } 968 969 private void showBackgroundGradient() { 970 if (mBackground == null) return; 971 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 972 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 973 mBackgroundFadeInAnimation = ValueAnimator.ofFloat(getBackgroundAlpha(), 1f); 974 mBackgroundFadeInAnimation.addUpdateListener(new AnimatorUpdateListener() { 975 public void onAnimationUpdate(ValueAnimator animation) { 976 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 977 } 978 }); 979 mBackgroundFadeInAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 980 mBackgroundFadeInAnimation.setDuration(BACKGROUND_FADE_IN_DURATION); 981 mBackgroundFadeInAnimation.start(); 982 } 983 984 private void hideBackgroundGradient() { 985 if (mBackground == null) return; 986 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 987 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 988 mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(getBackgroundAlpha(), 0f); 989 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 990 public void onAnimationUpdate(ValueAnimator animation) { 991 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 992 } 993 }); 994 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 995 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 996 mBackgroundFadeOutAnimation.start(); 997 } 998 999 public void setBackgroundAlpha(float alpha) { 1000 if (alpha != mBackgroundAlpha) { 1001 mBackgroundAlpha = alpha; 1002 invalidate(); 1003 } 1004 } 1005 1006 public float getBackgroundAlpha() { 1007 return mBackgroundAlpha; 1008 } 1009 1010 /** 1011 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 1012 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 1013 * as being larger. This method computes what offset the rotated view should be translated 1014 * in order to minimize this perceived gap. 1015 * @param degrees Angle of the view 1016 * @param width Width of the view 1017 * @param height Height of the view 1018 * @return Offset to be used in a View.setTranslationX() call 1019 */ 1020 private float getOffsetXForRotation(float degrees, int width, int height) { 1021 mMatrix.reset(); 1022 mCamera.save(); 1023 mCamera.rotateY(Math.abs(degrees)); 1024 mCamera.getMatrix(mMatrix); 1025 mCamera.restore(); 1026 1027 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 1028 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 1029 mTempFloat2[0] = width; 1030 mTempFloat2[1] = height; 1031 mMatrix.mapPoints(mTempFloat2); 1032 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 1033 } 1034 1035 float backgroundAlphaInterpolator(float r) { 1036 float pivotA = 0.1f; 1037 float pivotB = 0.4f; 1038 if (r < pivotA) { 1039 return 0; 1040 } else if (r > pivotB) { 1041 return 1.0f; 1042 } else { 1043 return (r - pivotA)/(pivotB - pivotA); 1044 } 1045 } 1046 1047 float overScrollBackgroundAlphaInterpolator(float r) { 1048 float threshold = 0.08f; 1049 1050 if (r > mOverScrollMaxBackgroundAlpha) { 1051 mOverScrollMaxBackgroundAlpha = r; 1052 } else if (r < mOverScrollMaxBackgroundAlpha) { 1053 r = mOverScrollMaxBackgroundAlpha; 1054 } 1055 1056 return Math.min(r / threshold, 1.0f); 1057 } 1058 1059 @Override 1060 protected void screenScrolled(int screenCenter) { 1061 // If the screen is not xlarge, then don't rotate the CellLayouts 1062 if (!LauncherApplication.isScreenXLarge()) return; 1063 1064 final int halfScreenSize = getMeasuredWidth() / 2; 1065 1066 for (int i = 0; i < getChildCount(); i++) { 1067 CellLayout cl = (CellLayout) getChildAt(i); 1068 if (cl != null) { 1069 int totalDistance = getScaledMeasuredWidth(cl) + mPageSpacing; 1070 int delta = screenCenter - (getChildOffset(i) - 1071 getRelativeChildOffset(i) + halfScreenSize); 1072 1073 float scrollProgress = delta / (totalDistance * 1.0f); 1074 scrollProgress = Math.min(scrollProgress, 1.0f); 1075 scrollProgress = Math.max(scrollProgress, -1.0f); 1076 1077 // If the current page (i) is being overscrolled, we use a different 1078 // set of rules for setting the background alpha multiplier. 1079 if ((mScrollX < 0 && i == 0) || (mScrollX > mMaxScrollX && 1080 i == getChildCount() -1 )) { 1081 cl.setBackgroundAlphaMultiplier( 1082 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 1083 mOverScrollPageIndex = i; 1084 } else if (mOverScrollPageIndex != i) { 1085 cl.setBackgroundAlphaMultiplier( 1086 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1087 } 1088 1089 float rotation = WORKSPACE_ROTATION * scrollProgress; 1090 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1091 cl.setTranslationX(translationX); 1092 1093 cl.setRotationY(rotation); 1094 } 1095 } 1096 } 1097 1098 protected void onAttachedToWindow() { 1099 super.onAttachedToWindow(); 1100 mWindowToken = getWindowToken(); 1101 computeScroll(); 1102 mDragController.setWindowToken(mWindowToken); 1103 } 1104 1105 protected void onDetachedFromWindow() { 1106 mWindowToken = null; 1107 } 1108 1109 @Override 1110 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1111 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1112 mUpdateWallpaperOffsetImmediately = true; 1113 } 1114 super.onLayout(changed, left, top, right, bottom); 1115 1116 // if shrinkToBottom() is called on initialization, it has to be deferred 1117 // until after the first call to onLayout so that it has the correct width 1118 if (mWaitingToShrink) { 1119 // shrink can trigger a synchronous onLayout call, so we 1120 // post this to avoid a stack overflow / tangled onLayout calls 1121 post(new Runnable() { 1122 public void run() { 1123 shrink(mWaitingToShrinkState, false); 1124 mWaitingToShrink = false; 1125 } 1126 }); 1127 } 1128 1129 if (LauncherApplication.isInPlaceRotationEnabled()) { 1130 // When the device is rotated, the scroll position of the current screen 1131 // needs to be refreshed 1132 setCurrentPage(getCurrentPage()); 1133 } 1134 } 1135 1136 @Override 1137 protected void onDraw(Canvas canvas) { 1138 updateWallpaperOffsets(); 1139 1140 // Draw the background gradient if necessary 1141 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1142 int alpha = (int) (mBackgroundAlpha * 255); 1143 if (mDrawCustomizeTrayBackground) { 1144 // Find out where to offset the gradient for the customization tray content 1145 mCustomizationDrawer.getLocationOnScreen(mCustomizationDrawerPos); 1146 final Matrix m = mCustomizationDrawer.getMatrix(); 1147 mCustomizationDrawerTransformedPos[0] = 0.0f; 1148 mCustomizationDrawerTransformedPos[1] = mCustomizationDrawerContent.getTop(); 1149 m.mapPoints(mCustomizationDrawerTransformedPos); 1150 1151 // Draw the bg glow behind the gradient 1152 mCustomizeTrayBackground.setAlpha(alpha); 1153 mCustomizeTrayBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1154 getMeasuredHeight()); 1155 mCustomizeTrayBackground.draw(canvas); 1156 1157 // Draw the bg gradient 1158 final int offset = (int) (mCustomizationDrawerPos[1] + 1159 mCustomizationDrawerTransformedPos[1]); 1160 mBackground.setAlpha(alpha); 1161 mBackground.setBounds(mScrollX, offset, mScrollX + getMeasuredWidth(), 1162 offset + getMeasuredHeight()); 1163 mBackground.draw(canvas); 1164 } else { 1165 mBackground.setAlpha(alpha); 1166 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1167 getMeasuredHeight()); 1168 mBackground.draw(canvas); 1169 } 1170 } 1171 super.onDraw(canvas); 1172 } 1173 1174 @Override 1175 protected void dispatchDraw(Canvas canvas) { 1176 if (mIsSmall || mIsInUnshrinkAnimation) { 1177 // Draw all the workspaces if we're small 1178 final int pageCount = getChildCount(); 1179 final long drawingTime = getDrawingTime(); 1180 for (int i = 0; i < pageCount; i++) { 1181 final CellLayout page = (CellLayout) getChildAt(i); 1182 if (page.getVisibility() == VISIBLE 1183 && (page.getAlpha() != 0f || page.getBackgroundAlpha() != 0f)) { 1184 drawChild(canvas, page, drawingTime); 1185 } 1186 } 1187 } else { 1188 super.dispatchDraw(canvas); 1189 1190 final int width = getWidth(); 1191 final int height = getHeight(); 1192 1193 // In portrait orientation, draw the glowing edge when dragging to adjacent screens 1194 if (mInScrollArea && (height > width)) { 1195 final int pageHeight = getChildAt(0).getHeight(); 1196 1197 // This determines the height of the glowing edge: 90% of the page height 1198 final int padding = (int) ((height - pageHeight) * 0.5f + pageHeight * 0.1f); 1199 1200 final CellLayout leftPage = (CellLayout) getChildAt(mCurrentPage - 1); 1201 final CellLayout rightPage = (CellLayout) getChildAt(mCurrentPage + 1); 1202 1203 if (leftPage != null && leftPage.getIsDragOverlapping()) { 1204 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left); 1205 d.setBounds(mScrollX, padding, mScrollX + d.getIntrinsicWidth(), height - padding); 1206 d.draw(canvas); 1207 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 1208 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right); 1209 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), padding, mScrollX + width, height - padding); 1210 d.draw(canvas); 1211 } 1212 } 1213 1214 if (mDropView != null) { 1215 // We are animating an item that was just dropped on the home screen. 1216 // Render its View in the current animation position. 1217 canvas.save(Canvas.MATRIX_SAVE_FLAG); 1218 final int xPos = mDropViewPos[0] - mDropView.getScrollX(); 1219 final int yPos = mDropViewPos[1] - mDropView.getScrollY(); 1220 canvas.translate(xPos, yPos); 1221 mDropView.draw(canvas); 1222 canvas.restore(); 1223 } 1224 } 1225 } 1226 1227 @Override 1228 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1229 if (!mLauncher.isAllAppsVisible()) { 1230 final Folder openFolder = getOpenFolder(); 1231 if (openFolder != null) { 1232 return openFolder.requestFocus(direction, previouslyFocusedRect); 1233 } else { 1234 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1235 } 1236 } 1237 return false; 1238 } 1239 1240 @Override 1241 public int getDescendantFocusability() { 1242 if (mIsSmall) { 1243 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1244 } 1245 return super.getDescendantFocusability(); 1246 } 1247 1248 @Override 1249 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1250 if (!mLauncher.isAllAppsVisible()) { 1251 final Folder openFolder = getOpenFolder(); 1252 if (openFolder != null) { 1253 openFolder.addFocusables(views, direction); 1254 } else { 1255 super.addFocusables(views, direction, focusableMode); 1256 } 1257 } 1258 } 1259 1260 @Override 1261 public boolean dispatchTouchEvent(MotionEvent ev) { 1262 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 1263 // (In XLarge mode, the workspace is shrunken below all apps, and responds to taps 1264 // ie when you click on a mini-screen, it zooms back to that screen) 1265 if (!LauncherApplication.isScreenXLarge() && mLauncher.isAllAppsVisible()) { 1266 return false; 1267 } 1268 } 1269 1270 return super.dispatchTouchEvent(ev); 1271 } 1272 1273 void enableChildrenCache(int fromPage, int toPage) { 1274 if (fromPage > toPage) { 1275 final int temp = fromPage; 1276 fromPage = toPage; 1277 toPage = temp; 1278 } 1279 1280 final int screenCount = getChildCount(); 1281 1282 fromPage = Math.max(fromPage, 0); 1283 toPage = Math.min(toPage, screenCount - 1); 1284 1285 for (int i = fromPage; i <= toPage; i++) { 1286 final CellLayout layout = (CellLayout) getChildAt(i); 1287 layout.setChildrenDrawnWithCacheEnabled(true); 1288 layout.setChildrenDrawingCacheEnabled(true); 1289 } 1290 } 1291 1292 void clearChildrenCache() { 1293 final int screenCount = getChildCount(); 1294 for (int i = 0; i < screenCount; i++) { 1295 final CellLayout layout = (CellLayout) getChildAt(i); 1296 layout.setChildrenDrawnWithCacheEnabled(false); 1297 } 1298 } 1299 1300 @Override 1301 public boolean onTouchEvent(MotionEvent ev) { 1302 AllAppsPagedView allApps = (AllAppsPagedView) 1303 mLauncher.findViewById(R.id.all_apps_paged_view); 1304 1305 if (mLauncher.isAllAppsVisible() && mShrinkState == ShrinkState.BOTTOM_HIDDEN 1306 && allApps != null) { 1307 if (ev.getAction() == MotionEvent.ACTION_UP && 1308 allApps.getTouchState() == TOUCH_STATE_REST) { 1309 1310 // Cancel any scrolling that is in progress. 1311 if (!mScroller.isFinished()) { 1312 mScroller.abortAnimation(); 1313 } 1314 setCurrentPage(mCurrentPage); 1315 1316 if (mShrinkState == ShrinkState.BOTTOM_HIDDEN) { 1317 mLauncher.showWorkspace(true); 1318 } 1319 allApps.onTouchEvent(ev); 1320 return true; 1321 } else { 1322 return allApps.onTouchEvent(ev); 1323 } 1324 } 1325 return super.onTouchEvent(ev); 1326 } 1327 1328 protected void enableChildrenLayers(boolean enable) { 1329 for (int i = 0; i < getPageCount(); i++) { 1330 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(enable); 1331 } 1332 } 1333 @Override 1334 protected void pageBeginMoving() { 1335 enableChildrenLayers(true); 1336 super.pageBeginMoving(); 1337 } 1338 1339 @Override 1340 protected void pageEndMoving() { 1341 if (!mIsSmall && !mIsInUnshrinkAnimation) { 1342 enableChildrenLayers(false); 1343 } 1344 super.pageEndMoving(); 1345 } 1346 1347 @Override 1348 protected void onWallpaperTap(MotionEvent ev) { 1349 final int[] position = mTempCell; 1350 getLocationOnScreen(position); 1351 1352 int pointerIndex = ev.getActionIndex(); 1353 position[0] += (int) ev.getX(pointerIndex); 1354 position[1] += (int) ev.getY(pointerIndex); 1355 1356 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1357 ev.getAction() == MotionEvent.ACTION_UP 1358 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1359 position[0], position[1], 0, null); 1360 } 1361 1362 public boolean isSmall() { 1363 return mIsSmall; 1364 } 1365 1366 private float getYScaleForScreen(int screen) { 1367 int x = Math.abs(screen - 2); 1368 1369 // TODO: This should be generalized for use with arbitrary rotation angles. 1370 switch(x) { 1371 case 0: return EXTRA_SCALE_FACTOR_0; 1372 case 1: return EXTRA_SCALE_FACTOR_1; 1373 case 2: return EXTRA_SCALE_FACTOR_2; 1374 } 1375 return 1.0f; 1376 } 1377 1378 public void shrink(ShrinkState shrinkState) { 1379 shrink(shrinkState, true); 1380 } 1381 1382 private int getCustomizeDrawerHeight() { 1383 TabHost customizationDrawer = mLauncher.getCustomizationDrawer(); 1384 int height = customizationDrawer.getHeight(); 1385 TabWidget tabWidget = (TabWidget) 1386 customizationDrawer.findViewById(com.android.internal.R.id.tabs); 1387 if (tabWidget.getTabCount() > 0) { 1388 TextView tabText = (TextView) tabWidget.getChildTabViewAt(0); 1389 // subtract the empty space above the tab text 1390 height -= ((tabWidget.getHeight() - tabText.getLineHeight())) / 2; 1391 } 1392 return height; 1393 } 1394 1395 // we use this to shrink the workspace for the all apps view and the customize view 1396 public void shrink(ShrinkState shrinkState, boolean animated) { 1397 if (mFirstLayout) { 1398 // (mFirstLayout == "first layout has not happened yet") 1399 // if we get a call to shrink() as part of our initialization (for example, if 1400 // Launcher is started in All Apps mode) then we need to wait for a layout call 1401 // to get our width so we can layout the mini-screen views correctly 1402 mWaitingToShrink = true; 1403 mWaitingToShrinkState = shrinkState; 1404 return; 1405 } 1406 // Stop any scrolling, move to the current page right away 1407 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1408 if (!mIsDragInProcess) { 1409 updateWhichPagesAcceptDrops(shrinkState); 1410 } 1411 1412 CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 1413 if (currentPage == null) { 1414 Log.w(TAG, "currentPage is NULL! mCurrentPage " + mCurrentPage 1415 + " mNextPage " + mNextPage); 1416 return; 1417 } 1418 if (currentPage.getBackgroundAlphaMultiplier() < 1.0f) { 1419 currentPage.setBackgroundAlpha(0.0f); 1420 } 1421 currentPage.setBackgroundAlphaMultiplier(1.0f); 1422 1423 mIsSmall = true; 1424 mShrinkState = shrinkState; 1425 1426 // we intercept and reject all touch events when we're small, so be sure to reset the state 1427 mTouchState = TOUCH_STATE_REST; 1428 mActivePointerId = INVALID_POINTER; 1429 1430 final Resources res = getResources(); 1431 final int screenWidth = getWidth(); 1432 final int screenHeight = getHeight(); 1433 1434 // Making the assumption that all pages have the same width as the 0th 1435 final int pageWidth = getChildAt(0).getMeasuredWidth(); 1436 final int pageHeight = getChildAt(0).getMeasuredHeight(); 1437 1438 final int scaledPageWidth = (int) (SHRINK_FACTOR * pageWidth); 1439 final int scaledPageHeight = (int) (SHRINK_FACTOR * pageHeight); 1440 final float extraScaledSpacing = res.getDimension(R.dimen.smallScreenExtraSpacing); 1441 1442 final int screenCount = getChildCount(); 1443 float totalWidth = screenCount * scaledPageWidth + (screenCount - 1) * extraScaledSpacing; 1444 1445 boolean isPortrait = getMeasuredHeight() > getMeasuredWidth(); 1446 float y = (isPortrait ? 1447 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginPortrait) : 1448 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginLandscape)); 1449 float finalAlpha = 1.0f; 1450 float extraShrinkFactor = 1.0f; 1451 1452 if (shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1453 y = screenHeight - y - scaledPageHeight; 1454 } else if (shrinkState == ShrinkState.BOTTOM_HIDDEN) { 1455 // We shrink and disappear to nothing in the case of all apps 1456 // (which is when we shrink to the bottom) 1457 y = screenHeight - y - scaledPageHeight; 1458 finalAlpha = 0.0f; 1459 } else if (shrinkState == ShrinkState.MIDDLE) { 1460 y = screenHeight / 2 - scaledPageHeight / 2; 1461 finalAlpha = 1.0f; 1462 } else if (shrinkState == ShrinkState.TOP) { 1463 y = (screenHeight - getCustomizeDrawerHeight() - scaledPageHeight) / 2; 1464 } 1465 1466 int duration; 1467 if (shrinkState == ShrinkState.BOTTOM_HIDDEN || shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1468 duration = res.getInteger(R.integer.config_allAppsWorkspaceShrinkTime); 1469 } else { 1470 duration = res.getInteger(R.integer.config_customizeWorkspaceShrinkTime); 1471 } 1472 1473 // We animate all the screens to the centered position in workspace 1474 // At the same time, the screens become greyed/dimmed 1475 1476 // newX is initialized to the left-most position of the centered screens 1477 float x = mScroller.getFinalX() + screenWidth / 2 - totalWidth / 2; 1478 1479 // We are going to scale about the center of the view, so we need to adjust the positions 1480 // of the views accordingly 1481 x -= (pageWidth - scaledPageWidth) / 2.0f; 1482 y -= (pageHeight - scaledPageHeight) / 2.0f; 1483 1484 if (mAnimator != null) { 1485 mAnimator.cancel(); 1486 } 1487 1488 mAnimator = new AnimatorSet(); 1489 1490 final float[] oldXs = new float[getChildCount()]; 1491 final float[] oldYs = new float[getChildCount()]; 1492 final float[] oldScaleXs = new float[getChildCount()]; 1493 final float[] oldScaleYs = new float[getChildCount()]; 1494 final float[] oldBackgroundAlphas = new float[getChildCount()]; 1495 final float[] oldAlphas = new float[getChildCount()]; 1496 final float[] oldRotationYs = new float[getChildCount()]; 1497 final float[] newXs = new float[getChildCount()]; 1498 final float[] newYs = new float[getChildCount()]; 1499 final float[] newScaleXs = new float[getChildCount()]; 1500 final float[] newScaleYs = new float[getChildCount()]; 1501 final float[] newBackgroundAlphas = new float[getChildCount()]; 1502 final float[] newAlphas = new float[getChildCount()]; 1503 final float[] newRotationYs = new float[getChildCount()]; 1504 1505 for (int i = 0; i < screenCount; i++) { 1506 final CellLayout cl = (CellLayout) getChildAt(i); 1507 1508 float rotation = (-i + 2) * WORKSPACE_ROTATION; 1509 float rotationScaleX = (float) (1.0f / Math.cos(Math.PI * rotation / 180.0f)); 1510 float rotationScaleY = getYScaleForScreen(i); 1511 1512 oldAlphas[i] = cl.getAlpha(); 1513 newAlphas[i] = finalAlpha; 1514 if (animated && (oldAlphas[i] != 0f || newAlphas[i] != 0f)) { 1515 // if the CellLayout will be visible during the animation, force building its 1516 // hardware layer immediately so we don't see a blip later in the animation 1517 cl.buildChildrenLayer(); 1518 } 1519 if (animated) { 1520 oldXs[i] = cl.getX(); 1521 oldYs[i] = cl.getY(); 1522 oldScaleXs[i] = cl.getScaleX(); 1523 oldScaleYs[i] = cl.getScaleY(); 1524 oldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1525 oldRotationYs[i] = cl.getRotationY(); 1526 newXs[i] = x; 1527 newYs[i] = y; 1528 newScaleXs[i] = SHRINK_FACTOR * rotationScaleX * extraShrinkFactor; 1529 newScaleYs[i] = SHRINK_FACTOR * rotationScaleY * extraShrinkFactor; 1530 newBackgroundAlphas[i] = finalAlpha; 1531 newRotationYs[i] = rotation; 1532 } else { 1533 cl.setX((int)x); 1534 cl.setY((int)y); 1535 cl.setScaleX(SHRINK_FACTOR * rotationScaleX * extraShrinkFactor); 1536 cl.setScaleY(SHRINK_FACTOR * rotationScaleY * extraShrinkFactor); 1537 cl.setBackgroundAlpha(finalAlpha); 1538 cl.setAlpha(finalAlpha); 1539 cl.setRotationY(rotation); 1540 mShrinkAnimationListener.onAnimationEnd(null); 1541 } 1542 // increment newX for the next screen 1543 x += scaledPageWidth + extraScaledSpacing; 1544 } 1545 1546 float wallpaperOffset = 0.5f; 1547 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 1548 int wallpaperTravelHeight = (int) (display.getHeight() * 1549 wallpaperTravelToScreenHeightRatio(display.getWidth(), display.getHeight())); 1550 float offsetFromCenter = (wallpaperTravelHeight / (float) mWallpaperHeight) / 2f; 1551 boolean isLandscape = display.getWidth() > display.getHeight(); 1552 1553 switch (shrinkState) { 1554 // animating in 1555 case TOP: 1556 // customize 1557 wallpaperOffset = 0.5f + offsetFromCenter; 1558 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.46f : 0.44f); 1559 break; 1560 case MIDDLE: 1561 case SPRING_LOADED: 1562 wallpaperOffset = 0.5f; 1563 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.34f : 0.32f); 1564 break; 1565 case BOTTOM_HIDDEN: 1566 case BOTTOM_VISIBLE: 1567 // allapps 1568 wallpaperOffset = 0.5f - offsetFromCenter; 1569 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.34f : 0.32f); 1570 break; 1571 } 1572 1573 setLayoutScale(1.0f); 1574 if (animated) { 1575 mWallpaperOffset.setHorizontalCatchupConstant(0.46f); 1576 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1577 1578 mSyncWallpaperOffsetWithScroll = false; 1579 1580 ValueAnimator animWithInterpolator = 1581 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1582 animWithInterpolator.setInterpolator(mZoomOutInterpolator); 1583 1584 final float oldHorizontalWallpaperOffset = getHorizontalWallpaperOffset(); 1585 final float oldVerticalWallpaperOffset = getVerticalWallpaperOffset(); 1586 final float newHorizontalWallpaperOffset = 0.5f; 1587 final float newVerticalWallpaperOffset = wallpaperOffset; 1588 animWithInterpolator.addUpdateListener(new LauncherAnimatorUpdateListener() { 1589 public void onAnimationUpdate(float a, float b) { 1590 if (b == 0f) { 1591 // an optimization, and required for correct behavior. 1592 return; 1593 } 1594 fastInvalidate(); 1595 setHorizontalWallpaperOffset( 1596 a * oldHorizontalWallpaperOffset + b * newHorizontalWallpaperOffset); 1597 setVerticalWallpaperOffset( 1598 a * oldVerticalWallpaperOffset + b * newVerticalWallpaperOffset); 1599 for (int i = 0; i < screenCount; i++) { 1600 final CellLayout cl = (CellLayout) getChildAt(i); 1601 cl.fastInvalidate(); 1602 cl.setFastX(a * oldXs[i] + b * newXs[i]); 1603 cl.setFastY(a * oldYs[i] + b * newYs[i]); 1604 cl.setFastScaleX(a * oldScaleXs[i] + b * newScaleXs[i]); 1605 cl.setFastScaleY(a * oldScaleYs[i] + b * newScaleYs[i]); 1606 cl.setFastBackgroundAlpha( 1607 a * oldBackgroundAlphas[i] + b * newBackgroundAlphas[i]); 1608 cl.setFastAlpha(a * oldAlphas[i] + b * newAlphas[i]); 1609 cl.setFastRotationY(a * oldRotationYs[i] + b * newRotationYs[i]); 1610 } 1611 } 1612 }); 1613 mAnimator.playTogether(animWithInterpolator); 1614 mAnimator.addListener(mShrinkAnimationListener); 1615 mAnimator.start(); 1616 } else { 1617 setVerticalWallpaperOffset(wallpaperOffset); 1618 setHorizontalWallpaperOffset(0.5f); 1619 updateWallpaperOffsetImmediately(); 1620 } 1621 setChildrenDrawnWithCacheEnabled(true); 1622 1623 if (shrinkState == ShrinkState.TOP) { 1624 showBackgroundGradientForCustomizeTray(); 1625 } else { 1626 showBackgroundGradientForAllApps(); 1627 } 1628 } 1629 1630 /* 1631 * This interpolator emulates the rate at which the perceived scale of an object changes 1632 * as its distance from a camera increases. When this interpolator is applied to a scale 1633 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1634 * from the camera. 1635 */ 1636 static class ZInterpolator implements TimeInterpolator { 1637 private float focalLength; 1638 1639 public ZInterpolator(float foc) { 1640 focalLength = foc; 1641 } 1642 1643 public float getInterpolation(float input) { 1644 return (1.0f - focalLength / (focalLength + input)) / 1645 (1.0f - focalLength / (focalLength + 1.0f)); 1646 } 1647 } 1648 1649 /* 1650 * The exact reverse of ZInterpolator. 1651 */ 1652 static class InverseZInterpolator implements TimeInterpolator { 1653 private ZInterpolator zInterpolator; 1654 public InverseZInterpolator(float foc) { 1655 zInterpolator = new ZInterpolator(foc); 1656 } 1657 public float getInterpolation(float input) { 1658 return 1 - zInterpolator.getInterpolation(1 - input); 1659 } 1660 } 1661 1662 /* 1663 * ZInterpolator compounded with an ease-out. 1664 */ 1665 static class ZoomOutInterpolator implements TimeInterpolator { 1666 private final ZInterpolator zInterpolator = new ZInterpolator(0.2f); 1667 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(1.8f); 1668 1669 public float getInterpolation(float input) { 1670 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1671 } 1672 } 1673 1674 /* 1675 * InvereZInterpolator compounded with an ease-out. 1676 */ 1677 static class ZoomInInterpolator implements TimeInterpolator { 1678 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1679 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1680 1681 public float getInterpolation(float input) { 1682 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1683 } 1684 } 1685 1686 private final ZoomOutInterpolator mZoomOutInterpolator = new ZoomOutInterpolator(); 1687 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1688 1689 private void updateWhichPagesAcceptDrops(ShrinkState state) { 1690 updateWhichPagesAcceptDropsHelper(state, false, 1, 1); 1691 } 1692 1693 private void updateWhichPagesAcceptDropsDuringDrag(ShrinkState state, int spanX, int spanY) { 1694 updateWhichPagesAcceptDropsHelper(state, true, spanX, spanY); 1695 } 1696 1697 private void updateWhichPagesAcceptDropsHelper( 1698 ShrinkState state, boolean isDragHappening, int spanX, int spanY) { 1699 final int screenCount = getChildCount(); 1700 for (int i = 0; i < screenCount; i++) { 1701 CellLayout cl = (CellLayout) getChildAt(i); 1702 cl.setIsDragOccuring(isDragHappening); 1703 if (state == null) { 1704 // If we are not in a shrunken state, mark all cell layouts as droppable (if they 1705 // have the space) 1706 cl.setAcceptsDrops(cl.findCellForSpan(null, spanX, spanY)); 1707 } else { 1708 switch (state) { 1709 case TOP: 1710 cl.setIsDefaultDropTarget(i == mCurrentPage); 1711 case BOTTOM_HIDDEN: 1712 case BOTTOM_VISIBLE: 1713 case SPRING_LOADED: 1714 if (state != ShrinkState.TOP) { 1715 cl.setIsDefaultDropTarget(false); 1716 } 1717 if (!isDragHappening) { 1718 // even if a drag isn't happening, we don't want to show a screen as 1719 // accepting drops if it doesn't have at least one free cell 1720 spanX = 1; 1721 spanY = 1; 1722 } 1723 // the page accepts drops if we can find at least one empty spot 1724 cl.setAcceptsDrops(cl.findCellForSpan(null, spanX, spanY)); 1725 break; 1726 default: 1727 throw new RuntimeException("Unhandled ShrinkState " + state); 1728 } 1729 } 1730 } 1731 } 1732 1733 /* 1734 * 1735 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1736 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1737 * 1738 * These methods mark the appropriate pages as accepting drops (which alters their visual 1739 * appearance). 1740 * 1741 */ 1742 public void onDragStartedWithItem(View v) { 1743 mIsDragInProcess = true; 1744 1745 final Canvas canvas = new Canvas(); 1746 1747 // We need to add extra padding to the bitmap to make room for the glow effect 1748 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1749 1750 // The outline is used to visualize where the item will land if dropped 1751 mDragOutline = createDragOutline(v, canvas, bitmapPadding); 1752 } 1753 1754 public void onDragStartedWithItemSpans(int spanX, int spanY, Bitmap b) { 1755 mIsDragInProcess = true; 1756 1757 final Canvas canvas = new Canvas(); 1758 1759 // We need to add extra padding to the bitmap to make room for the glow effect 1760 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1761 1762 CellLayout cl = (CellLayout) getChildAt(0); 1763 1764 int[] size = cl.cellSpansToSize(spanX, spanY); 1765 1766 // The outline is used to visualize where the item will land if dropped 1767 mDragOutline = createDragOutline(b, canvas, bitmapPadding, size[0], size[1]); 1768 1769 updateWhichPagesAcceptDropsDuringDrag(mShrinkState, spanX, spanY); 1770 } 1771 1772 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1773 // never dragged over 1774 public void onDragStopped(boolean success) { 1775 mLastDragView = null; 1776 // In the success case, DragController has already called onDragExit() 1777 if (!success) { 1778 doDragExit(); 1779 } 1780 mIsDragInProcess = false; 1781 updateWhichPagesAcceptDrops(mShrinkState); 1782 } 1783 1784 // We call this when we trigger an unshrink by clicking on the CellLayout cl 1785 public void unshrink(CellLayout clThatWasClicked) { 1786 unshrink(clThatWasClicked, false); 1787 } 1788 1789 public void unshrink(CellLayout clThatWasClicked, boolean springLoaded) { 1790 int newCurrentPage = indexOfChild(clThatWasClicked); 1791 if (mIsSmall) { 1792 if (springLoaded) { 1793 setLayoutScale(SPRING_LOADED_DRAG_SHRINK_FACTOR); 1794 } 1795 scrollToNewPageWithoutMovingPages(newCurrentPage); 1796 unshrink(true, springLoaded); 1797 } 1798 } 1799 1800 1801 public void enterSpringLoadedDragMode(CellLayout clThatWasClicked) { 1802 mShrinkState = ShrinkState.SPRING_LOADED; 1803 unshrink(clThatWasClicked, true); 1804 mDragTargetLayout.onDragEnter(); 1805 } 1806 1807 public void exitSpringLoadedDragMode(ShrinkState shrinkState) { 1808 shrink(shrinkState); 1809 if (mDragTargetLayout != null) { 1810 mDragTargetLayout.onDragExit(); 1811 } 1812 } 1813 1814 public void exitWidgetResizeMode() { 1815 DragLayer dragLayer = (DragLayer) mLauncher.findViewById(R.id.drag_layer); 1816 dragLayer.clearAllResizeFrames(); 1817 } 1818 1819 void unshrink(boolean animated) { 1820 unshrink(animated, false); 1821 } 1822 1823 void unshrink(boolean animated, boolean springLoaded) { 1824 mWaitingToShrink = false; 1825 if (mIsSmall) { 1826 float finalScaleFactor = 1.0f; 1827 float finalBackgroundAlpha = 0.0f; 1828 if (springLoaded) { 1829 finalScaleFactor = SPRING_LOADED_DRAG_SHRINK_FACTOR; 1830 finalBackgroundAlpha = 1.0f; 1831 } else { 1832 mIsSmall = false; 1833 } 1834 if (mAnimator != null) { 1835 mAnimator.cancel(); 1836 } 1837 1838 mAnimator = new AnimatorSet(); 1839 final int screenCount = getChildCount(); 1840 1841 final int duration = getResources().getInteger(R.integer.config_workspaceUnshrinkTime); 1842 1843 final float[] oldTranslationXs = new float[getChildCount()]; 1844 final float[] oldTranslationYs = new float[getChildCount()]; 1845 final float[] oldScaleXs = new float[getChildCount()]; 1846 final float[] oldScaleYs = new float[getChildCount()]; 1847 final float[] oldBackgroundAlphas = new float[getChildCount()]; 1848 final float[] oldBackgroundAlphaMultipliers = new float[getChildCount()]; 1849 final float[] oldAlphas = new float[getChildCount()]; 1850 final float[] oldRotationYs = new float[getChildCount()]; 1851 final float[] newTranslationXs = new float[getChildCount()]; 1852 final float[] newTranslationYs = new float[getChildCount()]; 1853 final float[] newScaleXs = new float[getChildCount()]; 1854 final float[] newScaleYs = new float[getChildCount()]; 1855 final float[] newBackgroundAlphas = new float[getChildCount()]; 1856 final float[] newBackgroundAlphaMultipliers = new float[getChildCount()]; 1857 final float[] newAlphas = new float[getChildCount()]; 1858 final float[] newRotationYs = new float[getChildCount()]; 1859 1860 for (int i = 0; i < screenCount; i++) { 1861 final CellLayout cl = (CellLayout)getChildAt(i); 1862 float finalAlphaValue = (i == mCurrentPage) ? 1.0f : 0.0f; 1863 float finalAlphaMultiplierValue = 1864 ((i == mCurrentPage) && (mShrinkState != ShrinkState.SPRING_LOADED)) ? 1865 0.0f : 1.0f; 1866 float rotation = 0.0f; 1867 1868 if (i < mCurrentPage) { 1869 rotation = WORKSPACE_ROTATION; 1870 } else if (i > mCurrentPage) { 1871 rotation = -WORKSPACE_ROTATION; 1872 } 1873 1874 float translation = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1875 1876 oldAlphas[i] = cl.getAlpha(); 1877 newAlphas[i] = finalAlphaValue; 1878 if (animated) { 1879 oldTranslationXs[i] = cl.getTranslationX(); 1880 oldTranslationYs[i] = cl.getTranslationY(); 1881 oldScaleXs[i] = cl.getScaleX(); 1882 oldScaleYs[i] = cl.getScaleY(); 1883 oldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1884 oldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1885 oldRotationYs[i] = cl.getRotationY(); 1886 1887 newTranslationXs[i] = translation; 1888 newTranslationYs[i] = 0f; 1889 newScaleXs[i] = finalScaleFactor; 1890 newScaleYs[i] = finalScaleFactor; 1891 newBackgroundAlphas[i] = finalBackgroundAlpha; 1892 newBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1893 newRotationYs[i] = rotation; 1894 } else { 1895 cl.setTranslationX(translation); 1896 cl.setTranslationY(0.0f); 1897 cl.setScaleX(finalScaleFactor); 1898 cl.setScaleY(finalScaleFactor); 1899 cl.setBackgroundAlpha(0.0f); 1900 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1901 cl.setAlpha(finalAlphaValue); 1902 cl.setRotationY(rotation); 1903 mUnshrinkAnimationListener.onAnimationEnd(null); 1904 } 1905 } 1906 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 1907 boolean isLandscape = display.getWidth() > display.getHeight(); 1908 switch (mShrinkState) { 1909 // animating out 1910 case TOP: 1911 // customize 1912 if (animated) { 1913 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.65f : 0.62f); 1914 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.65f : 0.62f); 1915 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1916 } 1917 break; 1918 case MIDDLE: 1919 case SPRING_LOADED: 1920 if (animated) { 1921 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.49f : 0.46f); 1922 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.49f : 0.46f); 1923 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1924 } 1925 break; 1926 case BOTTOM_HIDDEN: 1927 case BOTTOM_VISIBLE: 1928 // all apps 1929 if (animated) { 1930 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.65f : 0.65f); 1931 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.65f : 0.65f); 1932 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1933 } 1934 break; 1935 } 1936 if (animated) { 1937 ValueAnimator animWithInterpolator = 1938 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1939 animWithInterpolator.setInterpolator(mZoomInInterpolator); 1940 1941 final float oldHorizontalWallpaperOffset = getHorizontalWallpaperOffset(); 1942 final float oldVerticalWallpaperOffset = getVerticalWallpaperOffset(); 1943 final float newHorizontalWallpaperOffset = wallpaperOffsetForCurrentScroll(); 1944 final float newVerticalWallpaperOffset = 0.5f; 1945 animWithInterpolator.addUpdateListener(new LauncherAnimatorUpdateListener() { 1946 public void onAnimationUpdate(float a, float b) { 1947 if (b == 0f) { 1948 // an optimization, but not required 1949 return; 1950 } 1951 fastInvalidate(); 1952 setHorizontalWallpaperOffset( 1953 a * oldHorizontalWallpaperOffset + b * newHorizontalWallpaperOffset); 1954 setVerticalWallpaperOffset( 1955 a * oldVerticalWallpaperOffset + b * newVerticalWallpaperOffset); 1956 for (int i = 0; i < screenCount; i++) { 1957 final CellLayout cl = (CellLayout) getChildAt(i); 1958 cl.fastInvalidate(); 1959 cl.setFastTranslationX( 1960 a * oldTranslationXs[i] + b * newTranslationXs[i]); 1961 cl.setFastTranslationY( 1962 a * oldTranslationYs[i] + b * newTranslationYs[i]); 1963 cl.setFastScaleX(a * oldScaleXs[i] + b * newScaleXs[i]); 1964 cl.setFastScaleY(a * oldScaleYs[i] + b * newScaleYs[i]); 1965 cl.setFastBackgroundAlpha( 1966 a * oldBackgroundAlphas[i] + b * newBackgroundAlphas[i]); 1967 cl.setBackgroundAlphaMultiplier(a * oldBackgroundAlphaMultipliers[i] + 1968 b * newBackgroundAlphaMultipliers[i]); 1969 cl.setFastAlpha(a * oldAlphas[i] + b * newAlphas[i]); 1970 } 1971 } 1972 }); 1973 1974 ValueAnimator rotationAnim = 1975 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1976 rotationAnim.setInterpolator(new DecelerateInterpolator(2.0f)); 1977 rotationAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1978 public void onAnimationUpdate(float a, float b) { 1979 // don't invalidate workspace because we did it above 1980 if (b == 0f) { 1981 // an optimization, but not required 1982 return; 1983 } 1984 for (int i = 0; i < screenCount; i++) { 1985 final CellLayout cl = (CellLayout) getChildAt(i); 1986 cl.setFastRotationY(a * oldRotationYs[i] + b * newRotationYs[i]); 1987 } 1988 } 1989 }); 1990 1991 mAnimator.playTogether(animWithInterpolator, rotationAnim); 1992 // If we call this when we're not animated, onAnimationEnd is never called on 1993 // the listener; make sure we only use the listener when we're actually animating 1994 mAnimator.addListener(mUnshrinkAnimationListener); 1995 mAnimator.start(); 1996 } else { 1997 setHorizontalWallpaperOffset(wallpaperOffsetForCurrentScroll()); 1998 setVerticalWallpaperOffset(0.5f); 1999 updateWallpaperOffsetImmediately(); 2000 } 2001 } 2002 2003 if (!springLoaded) { 2004 hideBackgroundGradient(); 2005 } 2006 } 2007 2008 /** 2009 * Draw the View v into the given Canvas. 2010 * 2011 * @param v the view to draw 2012 * @param destCanvas the canvas to draw on 2013 * @param padding the horizontal and vertical padding to use when drawing 2014 */ 2015 private void drawDragView(View v, Canvas destCanvas, int padding) { 2016 final Rect clipRect = mTempRect; 2017 v.getDrawingRect(clipRect); 2018 2019 // For a TextView, adjust the clip rect so that we don't include the text label 2020 if (v instanceof BubbleTextView) { 2021 final BubbleTextView tv = (BubbleTextView) v; 2022 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 2023 tv.getLayout().getLineTop(0); 2024 } else if (v instanceof TextView) { 2025 final TextView tv = (TextView) v; 2026 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 2027 tv.getLayout().getLineTop(0); 2028 } 2029 2030 // Draw the View into the bitmap. 2031 // The translate of scrollX and scrollY is necessary when drawing TextViews, because 2032 // they set scrollX and scrollY to large values to achieve centered text 2033 2034 destCanvas.save(); 2035 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 2036 destCanvas.clipRect(clipRect, Op.REPLACE); 2037 v.draw(destCanvas); 2038 destCanvas.restore(); 2039 } 2040 2041 /** 2042 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2043 * Responsibility for the bitmap is transferred to the caller. 2044 */ 2045 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 2046 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 2047 final Bitmap b = Bitmap.createBitmap( 2048 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 2049 2050 canvas.setBitmap(b); 2051 drawDragView(v, canvas, padding); 2052 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2053 return b; 2054 } 2055 2056 /** 2057 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2058 * Responsibility for the bitmap is transferred to the caller. 2059 */ 2060 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h) { 2061 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 2062 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 2063 canvas.setBitmap(b); 2064 2065 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 2066 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 2067 (h - padding) / (float) orig.getHeight()); 2068 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 2069 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 2070 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 2071 2072 // center the image 2073 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 2074 2075 Paint p = new Paint(); 2076 p.setFilterBitmap(true); 2077 canvas.drawBitmap(orig, src, dst, p); 2078 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2079 2080 return b; 2081 } 2082 2083 /** 2084 * Creates a drag outline to represent a drop (that we don't have the actual information for 2085 * yet). May be changed in the future to alter the drop outline slightly depending on the 2086 * clip description mime data. 2087 */ 2088 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 2089 Resources r = getResources(); 2090 final int outlineColor = r.getColor(R.color.drag_outline_color); 2091 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 2092 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 2093 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 2094 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 2095 final Bitmap b = Bitmap.createBitmap( 2096 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 2097 2098 canvas.setBitmap(b); 2099 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 2100 rectRadius, rectRadius, mExternalDragOutlinePaint); 2101 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2102 return b; 2103 } 2104 2105 /** 2106 * Returns a new bitmap to show when the given View is being dragged around. 2107 * Responsibility for the bitmap is transferred to the caller. 2108 */ 2109 private Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 2110 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 2111 final Bitmap b = Bitmap.createBitmap( 2112 mDragOutline.getWidth(), mDragOutline.getHeight(), Bitmap.Config.ARGB_8888); 2113 2114 canvas.setBitmap(b); 2115 canvas.drawBitmap(mDragOutline, 0, 0, null); 2116 drawDragView(v, canvas, padding); 2117 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 2118 2119 return b; 2120 } 2121 2122 void startDrag(CellLayout.CellInfo cellInfo) { 2123 View child = cellInfo.cell; 2124 2125 // Make sure the drag was started by a long press as opposed to a long click. 2126 if (!child.isInTouchMode()) { 2127 return; 2128 } 2129 2130 mDragInfo = cellInfo; 2131 2132 CellLayout current = (CellLayout) getChildAt(cellInfo.screen); 2133 current.onDragChild(child); 2134 2135 child.clearFocus(); 2136 child.setPressed(false); 2137 2138 final Canvas canvas = new Canvas(); 2139 2140 // We need to add extra padding to the bitmap to make room for the glow effect 2141 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2142 2143 // The outline is used to visualize where the item will land if dropped 2144 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 2145 2146 // The drag bitmap follows the touch point around on the screen 2147 final Bitmap b = createDragBitmap(child, canvas, bitmapPadding); 2148 2149 final int bmpWidth = b.getWidth(); 2150 final int bmpHeight = b.getHeight(); 2151 2152 child.getLocationOnScreen(mTempXY); 2153 final int screenX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 2154 final int screenY = (int) mTempXY[1] + (child.getHeight() - bmpHeight) / 2; 2155 2156 Rect dragRect = null; 2157 if (child instanceof BubbleTextView) { 2158 int iconSize = getResources().getDimensionPixelSize(R.dimen.app_icon_size); 2159 int top = child.getPaddingTop(); 2160 int left = (bmpWidth - iconSize) / 2; 2161 int right = left + iconSize; 2162 int bottom = top + iconSize; 2163 dragRect = new Rect(left, top, right, bottom); 2164 } 2165 2166 mDragController.startDrag(b, screenX, screenY, this, child.getTag(), 2167 DragController.DRAG_ACTION_MOVE, dragRect); 2168 b.recycle(); 2169 } 2170 2171 void addApplicationShortcut(ShortcutInfo info, int screen, int cellX, int cellY, 2172 boolean insertAtFirst, int intersectX, int intersectY) { 2173 final CellLayout cellLayout = (CellLayout) getChildAt(screen); 2174 View view = mLauncher.createShortcut(R.layout.application, cellLayout, (ShortcutInfo) info); 2175 2176 final int[] cellXY = new int[2]; 2177 cellLayout.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 2178 addInScreen(view, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 2179 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 2180 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2181 cellXY[0], cellXY[1]); 2182 } 2183 2184 private void setPositionForDropAnimation( 2185 View dragView, int dragViewX, int dragViewY, View parent, View child) { 2186 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 2187 2188 // Based on the position of the drag view, find the top left of the original view 2189 int viewX = dragViewX + (dragView.getWidth() - child.getMeasuredWidth()) / 2; 2190 int viewY = dragViewY + (dragView.getHeight() - child.getMeasuredHeight()) / 2; 2191 2192 // Set its old pos (in the new parent's coordinates); it will be animated 2193 // in animateViewIntoPosition after the next layout pass 2194 lp.oldX = viewX - (parent.getLeft() - mScrollX); 2195 lp.oldY = viewY - (parent.getTop() - mScrollY); 2196 } 2197 2198 /* 2199 * We should be careful that this method cannot result in any synchronous requestLayout() 2200 * calls, as it is called from onLayout(). 2201 */ 2202 public void animateViewIntoPosition(final View view) { 2203 final CellLayout parent = (CellLayout) view.getParent().getParent(); 2204 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2205 2206 // Convert the animation params to be relative to the Workspace, not the CellLayout 2207 final int fromX = lp.oldX + parent.getLeft(); 2208 final int fromY = lp.oldY + parent.getTop(); 2209 2210 final int dx = lp.x - lp.oldX; 2211 final int dy = lp.y - lp.oldY; 2212 2213 // Calculate the duration of the animation based on the object's distance 2214 final float dist = (float) Math.sqrt(dx*dx + dy*dy); 2215 final Resources res = getResources(); 2216 final float maxDist = (float) res.getInteger(R.integer.config_dropAnimMaxDist); 2217 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration); 2218 if (dist < maxDist) { 2219 duration *= mQuintEaseOutInterpolator.getInterpolation(dist / maxDist); 2220 } 2221 2222 if (mDropAnim != null) { 2223 mDropAnim.end(); 2224 } 2225 mDropAnim = new ValueAnimator(); 2226 mDropAnim.setInterpolator(mQuintEaseOutInterpolator); 2227 2228 // The view is invisible during the animation; we render it manually. 2229 mDropAnim.addListener(new AnimatorListenerAdapter() { 2230 public void onAnimationStart(Animator animation) { 2231 // Set this here so that we don't render it until the animation begins 2232 mDropView = view; 2233 } 2234 2235 public void onAnimationEnd(Animator animation) { 2236 if (mDropView != null) { 2237 mDropView.setVisibility(View.VISIBLE); 2238 mDropView = null; 2239 } 2240 } 2241 }); 2242 2243 mDropAnim.setDuration(duration); 2244 mDropAnim.setFloatValues(0.0f, 1.0f); 2245 mDropAnim.removeAllUpdateListeners(); 2246 mDropAnim.addUpdateListener(new AnimatorUpdateListener() { 2247 public void onAnimationUpdate(ValueAnimator animation) { 2248 final float percent = (Float) animation.getAnimatedValue(); 2249 // Invalidate the old position 2250 invalidate(mDropViewPos[0], mDropViewPos[1], 2251 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 2252 2253 mDropViewPos[0] = fromX + (int) (percent * dx + 0.5f); 2254 mDropViewPos[1] = fromY + (int) (percent * dy + 0.5f); 2255 invalidate(mDropViewPos[0], mDropViewPos[1], 2256 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 2257 } 2258 }); 2259 2260 mDropAnim.start(); 2261 } 2262 2263 /** 2264 * {@inheritDoc} 2265 */ 2266 public boolean acceptDrop(DragSource source, int x, int y, 2267 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 2268 2269 // If it's an external drop (e.g. from All Apps), check if it should be accepted 2270 if (source != this) { 2271 // Don't accept the drop if we're not over a screen at time of drop 2272 if (mDragTargetLayout == null || !mDragTargetLayout.getAcceptsDrops()) { 2273 return false; 2274 } 2275 2276 final CellLayout.CellInfo dragCellInfo = mDragInfo; 2277 final int spanX = dragCellInfo == null ? 1 : dragCellInfo.spanX; 2278 final int spanY = dragCellInfo == null ? 1 : dragCellInfo.spanY; 2279 2280 final View ignoreView = dragCellInfo == null ? null : dragCellInfo.cell; 2281 2282 // Don't accept the drop if there's no room for the item 2283 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 2284 mLauncher.showOutOfSpaceMessage(); 2285 return false; 2286 } 2287 } 2288 return true; 2289 } 2290 2291 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int originX, int originY) { 2292 mTargetCell = findNearestArea(originX, originY, 2293 1, 1, target, 2294 mTargetCell); 2295 2296 View v = target.getChildAt(mTargetCell[0], mTargetCell[1]); 2297 boolean hasntMoved = mDragInfo != null && (mDragInfo.cellX == mTargetCell[0] && 2298 mDragInfo.cellY == mTargetCell[1]); 2299 2300 if (v == null || hasntMoved) return false; 2301 2302 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2303 boolean willBecomeShortcut = 2304 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2305 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2306 2307 return (aboveShortcut && willBecomeShortcut); 2308 } 2309 2310 boolean createUserFolderIfNecessary(View newView, CellLayout target, int originX, 2311 int originY, boolean external) { 2312 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2313 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2314 2315 // First we find the cell nearest to point at which the item is dropped, without 2316 // any consideration to whether there is an item there. 2317 mTargetCell = findNearestArea(originX, originY, 2318 spanX, spanY, target, 2319 mTargetCell); 2320 2321 View v = target.getChildAt(mTargetCell[0], mTargetCell[1]); 2322 boolean hasntMoved = mDragInfo != null && (mDragInfo.cellX == mTargetCell[0] && 2323 mDragInfo.cellY == mTargetCell[1]); 2324 2325 if (v == null || hasntMoved) return false; 2326 2327 final int screen = (mTargetCell == null) ? 2328 mDragInfo.screen : indexOfChild(target); 2329 2330 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2331 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2332 2333 if (aboveShortcut && willBecomeShortcut) { 2334 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2335 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2336 // if the drag started here, we need to remove it from the workspace 2337 if (!external) { 2338 int fromScreen = mDragInfo.screen; 2339 CellLayout sourceLayout = (CellLayout) getChildAt(fromScreen); 2340 sourceLayout.removeView(newView); 2341 } 2342 2343 target.removeView(v); 2344 FolderIcon fi = mLauncher.addFolder(screen, mTargetCell[0], mTargetCell[1]); 2345 fi.addItem(destInfo); 2346 fi.addItem(sourceInfo); 2347 return true; 2348 } 2349 return false; 2350 } 2351 2352 public void onDrop(DragSource source, int x, int y, int xOffset, int yOffset, 2353 DragView dragView, Object dragInfo) { 2354 2355 mDragViewVisualCenter = getDragViewVisualCenter(x, y, xOffset, yOffset, dragView, 2356 mDragViewVisualCenter); 2357 2358 // We want the point to be mapped to the dragTarget. 2359 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2360 2361 // When you are in customization mode and drag to a particular screen, make that the 2362 // new current/default screen, so any subsequent taps add items to that screen 2363 if (!mLauncher.isAllAppsVisible()) { 2364 int dragTargetIndex = indexOfChild(mDragTargetLayout); 2365 if (mCurrentPage != dragTargetIndex && (mIsSmall || mIsInUnshrinkAnimation)) { 2366 scrollToNewPageWithoutMovingPages(dragTargetIndex); 2367 } 2368 } 2369 2370 if (source != this) { 2371 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2372 (int) mDragViewVisualCenter[1] }; 2373 if ((mIsSmall || mIsInUnshrinkAnimation) && !mLauncher.isAllAppsVisible()) { 2374 // When the workspace is shrunk and the drop comes from customize, don't actually 2375 // add the item to the screen -- customize will do this itself 2376 ((ItemInfo) dragInfo).dropPos = touchXY; 2377 return; 2378 } 2379 onDropExternal(touchXY, dragInfo, mDragTargetLayout, false, dragView); 2380 } else if (mDragInfo != null) { 2381 final View cell = mDragInfo.cell; 2382 CellLayout dropTargetLayout = mDragTargetLayout; 2383 2384 // Handle the case where the user drops when in the scroll area. 2385 // This is treated as a drop on the adjacent page. 2386 if (dropTargetLayout == null && mInScrollArea) { 2387 if (mPendingScrollDirection == DragController.SCROLL_LEFT) { 2388 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage - 1); 2389 } else if (mPendingScrollDirection == DragController.SCROLL_RIGHT) { 2390 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage + 1); 2391 } 2392 } 2393 2394 if (dropTargetLayout != null) { 2395 // Move internally 2396 final int screen = (mTargetCell == null) ? 2397 mDragInfo.screen : indexOfChild(dropTargetLayout); 2398 2399 // If the item being dropped is a shortcut and the nearest drop cell also contains 2400 // a shortcut, then create a folder with the two shortcuts. 2401 if (createUserFolderIfNecessary(cell, dropTargetLayout, 2402 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], false)) { 2403 return; 2404 } 2405 2406 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2407 // we need to find the nearest cell location that is vacant 2408 mTargetCell = findNearestVacantArea((int) mDragViewVisualCenter[0], 2409 (int) mDragViewVisualCenter[1], mDragInfo.spanX, mDragInfo.spanY, cell, 2410 dropTargetLayout, mTargetCell); 2411 2412 if (screen != mCurrentPage) { 2413 snapToPage(screen); 2414 } 2415 2416 if (mTargetCell != null) { 2417 if (screen != mDragInfo.screen) { 2418 // Reparent the view 2419 ((CellLayout) getChildAt(mDragInfo.screen)).removeView(cell); 2420 addInScreen(cell, screen, mTargetCell[0], mTargetCell[1], 2421 mDragInfo.spanX, mDragInfo.spanY); 2422 } 2423 2424 // update the item's position after drop 2425 final ItemInfo info = (ItemInfo) cell.getTag(); 2426 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2427 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 2428 lp.cellX = mTargetCell[0]; 2429 lp.cellY = mTargetCell[1]; 2430 cell.setId(LauncherModel.getCellLayoutChildId(-1, mDragInfo.screen, 2431 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2432 2433 if (cell instanceof LauncherAppWidgetHostView) { 2434 final CellLayout cellLayout = dropTargetLayout; 2435 // We post this call so that the widget has a chance to be placed 2436 // in its final location 2437 2438 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2439 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2440 if (pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2441 final Runnable resizeRunnable = new Runnable() { 2442 public void run() { 2443 DragLayer dragLayer = (DragLayer) 2444 mLauncher.findViewById(R.id.drag_layer); 2445 dragLayer.addResizeFrame(info, hostView, 2446 cellLayout); 2447 } 2448 }; 2449 post(new Runnable() { 2450 public void run() { 2451 if (!isPageMoving()) { 2452 resizeRunnable.run(); 2453 } else { 2454 mDelayedResizeRunnable = resizeRunnable; 2455 } 2456 } 2457 }); 2458 } 2459 } 2460 2461 LauncherModel.moveItemInDatabase(mLauncher, info, 2462 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2463 lp.cellX, lp.cellY); 2464 } 2465 } 2466 2467 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2468 2469 int loc[] = new int[2]; 2470 getViewLocationRelativeToSelf(dragView, loc); 2471 2472 // Prepare it to be animated into its new position 2473 // This must be called after the view has been re-parented 2474 setPositionForDropAnimation(dragView, loc[0], loc[1], parent, cell); 2475 boolean animateDrop = !mWasSpringLoadedOnDragExit; 2476 parent.onDropChild(cell, animateDrop); 2477 } 2478 } 2479 2480 private void getViewLocationRelativeToSelf(View v, int[] location) { 2481 getLocationOnScreen(location); 2482 int x = location[0]; 2483 int y = location[1]; 2484 2485 v.getLocationOnScreen(location); 2486 int vX = location[0]; 2487 int vY = location[1]; 2488 2489 location[0] = vX - x; 2490 location[1] = vY - y; 2491 } 2492 2493 public void onDragEnter(DragSource source, int x, int y, int xOffset, 2494 int yOffset, DragView dragView, Object dragInfo) { 2495 mDragTargetLayout = null; // Reset the drag state 2496 2497 if (!mIsSmall) { 2498 mDragTargetLayout = getCurrentDropLayout(); 2499 mDragTargetLayout.onDragEnter(); 2500 showOutlines(); 2501 } 2502 } 2503 2504 public DropTarget getDropTargetDelegate(DragSource source, int x, int y, 2505 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 2506 2507 if (mIsSmall || mIsInUnshrinkAnimation) { 2508 // If we're shrunken, don't let anyone drag on folders/etc that are on the mini-screens 2509 return null; 2510 } 2511 // We may need to delegate the drag to a child view. If a 1x1 item 2512 // would land in a cell occupied by a DragTarget (e.g. a Folder), 2513 // then drag events should be handled by that child. 2514 2515 ItemInfo item = (ItemInfo) dragInfo; 2516 CellLayout currentLayout = getCurrentDropLayout(); 2517 2518 int dragPointX, dragPointY; 2519 if (item.spanX == 1 && item.spanY == 1) { 2520 // For a 1x1, calculate the drop cell exactly as in onDragOver 2521 dragPointX = x - xOffset; 2522 dragPointY = y - yOffset; 2523 } else { 2524 // Otherwise, use the exact drag coordinates 2525 dragPointX = x; 2526 dragPointY = y; 2527 } 2528 dragPointX += mScrollX - currentLayout.getLeft(); 2529 dragPointY += mScrollY - currentLayout.getTop(); 2530 2531 // If we are dragging over a cell that contains a DropTarget that will 2532 // accept the drop, delegate to that DropTarget. 2533 final int[] cellXY = mTempCell; 2534 currentLayout.estimateDropCell(dragPointX, dragPointY, item.spanX, item.spanY, cellXY); 2535 View child = currentLayout.getChildAt(cellXY[0], cellXY[1]); 2536 if (child instanceof DropTarget) { 2537 DropTarget target = (DropTarget)child; 2538 if (target.acceptDrop(source, x, y, xOffset, yOffset, dragView, dragInfo)) { 2539 return target; 2540 } 2541 } 2542 return null; 2543 } 2544 2545 /** 2546 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 2547 * in the returned structure related to the widgets that match the drop (or a null list if it is 2548 * a shortcut drop). If the drop is not accepted then a null structure is returned. 2549 */ 2550 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 2551 final LauncherModel model = mLauncher.getModel(); 2552 final ClipDescription desc = event.getClipDescription(); 2553 final int mimeTypeCount = desc.getMimeTypeCount(); 2554 for (int i = 0; i < mimeTypeCount; ++i) { 2555 final String mimeType = desc.getMimeType(i); 2556 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 2557 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 2558 } else { 2559 final List<WidgetMimeTypeHandlerData> widgets = 2560 model.resolveWidgetsForMimeType(mContext, mimeType); 2561 if (widgets.size() > 0) { 2562 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 2563 } 2564 } 2565 } 2566 return null; 2567 } 2568 2569 /** 2570 * Global drag and drop handler 2571 */ 2572 @Override 2573 public boolean onDragEvent(DragEvent event) { 2574 final ClipDescription desc = event.getClipDescription(); 2575 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 2576 final int[] pos = new int[2]; 2577 layout.getLocationOnScreen(pos); 2578 // We need to offset the drag coordinates to layout coordinate space 2579 final int x = (int) event.getX() - pos[0]; 2580 final int y = (int) event.getY() - pos[1]; 2581 2582 switch (event.getAction()) { 2583 case DragEvent.ACTION_DRAG_STARTED: { 2584 // Validate this drag 2585 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2586 if (test != null) { 2587 boolean isShortcut = (test.second == null); 2588 if (isShortcut) { 2589 // Check if we have enough space on this screen to add a new shortcut 2590 if (!layout.findCellForSpan(pos, 1, 1)) { 2591 Toast.makeText(mContext, mContext.getString(R.string.out_of_space), 2592 Toast.LENGTH_SHORT).show(); 2593 return false; 2594 } 2595 } 2596 } else { 2597 // Show error message if we couldn't accept any of the items 2598 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 2599 Toast.LENGTH_SHORT).show(); 2600 return false; 2601 } 2602 2603 // Create the drag outline 2604 // We need to add extra padding to the bitmap to make room for the glow effect 2605 final Canvas canvas = new Canvas(); 2606 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2607 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 2608 2609 // Show the current page outlines to indicate that we can accept this drop 2610 showOutlines(); 2611 layout.setIsDragOccuring(true); 2612 layout.onDragEnter(); 2613 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2614 2615 return true; 2616 } 2617 case DragEvent.ACTION_DRAG_LOCATION: 2618 // Visualize the drop location 2619 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2620 return true; 2621 case DragEvent.ACTION_DROP: { 2622 // Try and add any shortcuts 2623 final LauncherModel model = mLauncher.getModel(); 2624 final ClipData data = event.getClipData(); 2625 2626 // We assume that the mime types are ordered in descending importance of 2627 // representation. So we enumerate the list of mime types and alert the 2628 // user if any widgets can handle the drop. Only the most preferred 2629 // representation will be handled. 2630 pos[0] = x; 2631 pos[1] = y; 2632 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2633 if (test != null) { 2634 final int index = test.first; 2635 final List<WidgetMimeTypeHandlerData> widgets = test.second; 2636 final boolean isShortcut = (widgets == null); 2637 final String mimeType = desc.getMimeType(index); 2638 if (isShortcut) { 2639 final Intent intent = data.getItemAt(index).getIntent(); 2640 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 2641 onDropExternal(new int[] { x, y }, info, layout, false); 2642 } else { 2643 if (widgets.size() == 1) { 2644 // If there is only one item, then go ahead and add and configure 2645 // that widget 2646 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 2647 final PendingAddWidgetInfo createInfo = 2648 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 2649 mLauncher.addAppWidgetFromDrop(createInfo, mCurrentPage, pos); 2650 } else { 2651 // Show the widget picker dialog if there is more than one widget 2652 // that can handle this data type 2653 final InstallWidgetReceiver.WidgetListAdapter adapter = 2654 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 2655 data, widgets, layout, mCurrentPage, pos); 2656 final AlertDialog.Builder builder = 2657 new AlertDialog.Builder(mContext); 2658 builder.setAdapter(adapter, adapter); 2659 builder.setCancelable(true); 2660 builder.setTitle(mContext.getString( 2661 R.string.external_drop_widget_pick_title)); 2662 builder.setIcon(R.drawable.ic_no_applications); 2663 builder.show(); 2664 } 2665 } 2666 } 2667 return true; 2668 } 2669 case DragEvent.ACTION_DRAG_ENDED: 2670 // Hide the page outlines after the drop 2671 layout.setIsDragOccuring(false); 2672 layout.onDragExit(); 2673 hideOutlines(); 2674 return true; 2675 } 2676 return super.onDragEvent(event); 2677 } 2678 2679 /* 2680 * 2681 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2682 * coordinate space. The argument xy is modified with the return result. 2683 * 2684 */ 2685 void mapPointFromSelfToChild(View v, float[] xy) { 2686 mapPointFromSelfToChild(v, xy, null); 2687 } 2688 2689 /* 2690 * 2691 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2692 * coordinate space. The argument xy is modified with the return result. 2693 * 2694 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2695 * computing it itself; we use this to avoid redundant matrix inversions in 2696 * findMatchingPageForDragOver 2697 * 2698 */ 2699 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2700 if (cachedInverseMatrix == null) { 2701 v.getMatrix().invert(mTempInverseMatrix); 2702 cachedInverseMatrix = mTempInverseMatrix; 2703 } 2704 xy[0] = xy[0] + mScrollX - v.getLeft(); 2705 xy[1] = xy[1] + mScrollY - v.getTop(); 2706 cachedInverseMatrix.mapPoints(xy); 2707 } 2708 2709 /* 2710 * 2711 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2712 * the parent View's coordinate space. The argument xy is modified with the return result. 2713 * 2714 */ 2715 void mapPointFromChildToSelf(View v, float[] xy) { 2716 v.getMatrix().mapPoints(xy); 2717 xy[0] -= (mScrollX - v.getLeft()); 2718 xy[1] -= (mScrollY - v.getTop()); 2719 } 2720 2721 static private float squaredDistance(float[] point1, float[] point2) { 2722 float distanceX = point1[0] - point2[0]; 2723 float distanceY = point2[1] - point2[1]; 2724 return distanceX * distanceX + distanceY * distanceY; 2725 } 2726 2727 /* 2728 * 2729 * Returns true if the passed CellLayout cl overlaps with dragView 2730 * 2731 */ 2732 boolean overlaps(CellLayout cl, DragView dragView, 2733 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2734 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2735 final float[] draggedItemTopLeft = mTempDragCoordinates; 2736 draggedItemTopLeft[0] = dragViewX; 2737 draggedItemTopLeft[1] = dragViewY; 2738 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2739 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2740 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2741 2742 // Transform the dragged item's top left coordinates 2743 // to the CellLayout's local coordinates 2744 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2745 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2746 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2747 2748 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2749 // Transform the dragged item's bottom right coordinates 2750 // to the CellLayout's local coordinates 2751 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2752 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2753 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2754 2755 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2756 float overlap = (overlapRegionRight - overlapRegionLeft) * 2757 (overlapRegionBottom - overlapRegionTop); 2758 if (overlap > 0) { 2759 return true; 2760 } 2761 } 2762 } 2763 return false; 2764 } 2765 2766 /* 2767 * 2768 * This method returns the CellLayout that is currently being dragged to. In order to drag 2769 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2770 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2771 * 2772 * Return null if no CellLayout is currently being dragged over 2773 * 2774 */ 2775 private CellLayout findMatchingPageForDragOver( 2776 DragView dragView, int originX, int originY, int offsetX, int offsetY) { 2777 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2778 // with the item being dragged and then choose the one that's closest to the touch point 2779 final int screenCount = getChildCount(); 2780 CellLayout bestMatchingScreen = null; 2781 float smallestDistSoFar = Float.MAX_VALUE; 2782 2783 for (int i = 0; i < screenCount; i++) { 2784 CellLayout cl = (CellLayout)getChildAt(i); 2785 2786 final float[] touchXy = mTempTouchCoordinates; 2787 touchXy[0] = originX + offsetX; 2788 touchXy[1] = originY + offsetY; 2789 2790 // Transform the touch coordinates to the CellLayout's local coordinates 2791 // If the touch point is within the bounds of the cell layout, we can return immediately 2792 cl.getMatrix().invert(mTempInverseMatrix); 2793 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2794 2795 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2796 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2797 return cl; 2798 } 2799 2800 if (overlaps(cl, dragView, originX, originY, mTempInverseMatrix)) { 2801 // Get the center of the cell layout in screen coordinates 2802 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2803 cellLayoutCenter[0] = cl.getWidth()/2; 2804 cellLayoutCenter[1] = cl.getHeight()/2; 2805 mapPointFromChildToSelf(cl, cellLayoutCenter); 2806 2807 touchXy[0] = originX + offsetX; 2808 touchXy[1] = originY + offsetY; 2809 2810 // Calculate the distance between the center of the CellLayout 2811 // and the touch point 2812 float dist = squaredDistance(touchXy, cellLayoutCenter); 2813 2814 if (dist < smallestDistSoFar) { 2815 smallestDistSoFar = dist; 2816 bestMatchingScreen = cl; 2817 } 2818 } 2819 } 2820 return bestMatchingScreen; 2821 } 2822 2823 // This is used to compute the visual center of the dragView. This point is then 2824 // used to visualize drop locations and determine where to drop an item. The idea is that 2825 // the visual center represents the user's interpretation of where the item is, and hence 2826 // is the appropriate point to use when determining drop location. 2827 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2828 DragView dragView, float[] recycle) { 2829 float res[]; 2830 if (recycle == null) { 2831 res = new float[2]; 2832 } else { 2833 res = recycle; 2834 } 2835 2836 // First off, the drag view has been shifted in a way that is not represented in the 2837 // x and y values or the x/yOffsets. Here we account for that shift. 2838 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2839 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2840 2841 // These represent the visual top and left of drag view if a dragRect was provided. 2842 // If a dragRect was not provided, then they correspond to the actual view left and 2843 // top, as the dragRect is in that case taken to be the entire dragView. 2844 // R.dimen.dragViewOffsetY. 2845 int left = x - xOffset; 2846 int top = y - yOffset; 2847 2848 // In order to find the visual center, we shift by half the dragRect 2849 res[0] = left + dragView.getDragRegion().width() / 2; 2850 res[1] = top + dragView.getDragRegion().height() / 2; 2851 2852 return res; 2853 } 2854 2855 public void onDragOver(DragSource source, int x, int y, int xOffset, int yOffset, 2856 DragView dragView, Object dragInfo) { 2857 // When touch is inside the scroll area, skip dragOver actions for the current screen 2858 if (!mInScrollArea) { 2859 CellLayout layout; 2860 int left = x - xOffset; 2861 int top = y - yOffset; 2862 2863 mDragViewVisualCenter = getDragViewVisualCenter(x, y, xOffset, yOffset, dragView, 2864 mDragViewVisualCenter); 2865 2866 boolean shrunken = mIsSmall || mIsInUnshrinkAnimation; 2867 if (shrunken) { 2868 mLastDragView = dragView; 2869 mLastDragOriginX = left; 2870 mLastDragOriginY = top; 2871 mLastDragXOffset = xOffset; 2872 mLastDragYOffset = yOffset; 2873 layout = findMatchingPageForDragOver(dragView, left, top, xOffset, yOffset); 2874 2875 if (layout != mDragTargetLayout) { 2876 if (mDragTargetLayout != null) { 2877 mDragTargetLayout.setIsDragOverlapping(false); 2878 mSpringLoadedDragController.onDragExit(); 2879 } 2880 mDragTargetLayout = layout; 2881 // In spring-loaded mode, we still want the user to be able to hover over a 2882 // full screen (which is traditionally set to not accept drops) if they want to 2883 // get to pages beyond the screen that is full. 2884 boolean allowDragOver = (mDragTargetLayout != null) && 2885 (mDragTargetLayout.getAcceptsDrops() || 2886 (mShrinkState == ShrinkState.SPRING_LOADED)); 2887 if (allowDragOver) { 2888 mDragTargetLayout.setIsDragOverlapping(true); 2889 mSpringLoadedDragController.onDragEnter( 2890 mDragTargetLayout, mShrinkState == ShrinkState.SPRING_LOADED); 2891 } 2892 } 2893 } else { 2894 layout = getCurrentDropLayout(); 2895 if (layout != mDragTargetLayout) { 2896 if (mDragTargetLayout != null) { 2897 mDragTargetLayout.onDragExit(); 2898 } 2899 layout.onDragEnter(); 2900 mDragTargetLayout = layout; 2901 } 2902 } 2903 if (!shrunken || mShrinkState == ShrinkState.SPRING_LOADED) { 2904 layout = getCurrentDropLayout(); 2905 2906 final ItemInfo item = (ItemInfo)dragInfo; 2907 if (dragInfo instanceof LauncherAppWidgetInfo) { 2908 LauncherAppWidgetInfo widgetInfo = (LauncherAppWidgetInfo)dragInfo; 2909 2910 if (widgetInfo.spanX == -1) { 2911 // Calculate the grid spans needed to fit this widget 2912 int[] spans = layout.rectToCell( 2913 widgetInfo.minWidth, widgetInfo.minHeight, null); 2914 item.spanX = spans[0]; 2915 item.spanY = spans[1]; 2916 } 2917 } 2918 2919 if (mDragTargetLayout != null) { 2920 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2921 // We want the point to be mapped to the dragTarget. 2922 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2923 ItemInfo info = (ItemInfo) dragInfo; 2924 2925 if (!willCreateUserFolder(info, mDragTargetLayout, 2926 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1])) { 2927 mIsDraggingOverIcon = false; 2928 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2929 (int) mDragViewVisualCenter[0], 2930 (int) mDragViewVisualCenter[1], 2931 item.spanX, item.spanY); 2932 } else if (!mIsDraggingOverIcon) { 2933 mIsDraggingOverIcon = true; 2934 mDragTargetLayout.clearDragOutlines(); 2935 } 2936 } 2937 } 2938 } 2939 } 2940 2941 private void doDragExit() { 2942 mWasSpringLoadedOnDragExit = mShrinkState == ShrinkState.SPRING_LOADED; 2943 if (mDragTargetLayout != null) { 2944 mDragTargetLayout.onDragExit(); 2945 } 2946 if (!mIsPageMoving) { 2947 hideOutlines(); 2948 } 2949 if (mShrinkState == ShrinkState.SPRING_LOADED) { 2950 mLauncher.exitSpringLoadedDragMode(); 2951 } 2952 clearAllHovers(); 2953 } 2954 2955 public void onDragExit(DragSource source, int x, int y, int xOffset, 2956 int yOffset, DragView dragView, Object dragInfo) { 2957 doDragExit(); 2958 } 2959 2960 @Override 2961 public void getHitRect(Rect outRect) { 2962 // We want the workspace to have the whole area of the display (it will find the correct 2963 // cell layout to drop to in the existing drag/drop logic. 2964 final Display d = mLauncher.getWindowManager().getDefaultDisplay(); 2965 outRect.set(0, 0, d.getWidth(), d.getHeight()); 2966 } 2967 2968 /** 2969 * Add the item specified by dragInfo to the given layout. 2970 * @return true if successful 2971 */ 2972 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2973 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2974 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2975 return true; 2976 } 2977 mLauncher.showOutOfSpaceMessage(); 2978 return false; 2979 } 2980 2981 private void onDropExternal(int[] touchXY, Object dragInfo, 2982 CellLayout cellLayout, boolean insertAtFirst) { 2983 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 2984 } 2985 2986 /** 2987 * Drop an item that didn't originate on one of the workspace screens. 2988 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2989 * come from another app altogether. 2990 * 2991 * NOTE: This can also be called when we are outside of a drag event, when we want 2992 * to add an item to one of the workspace screens. 2993 */ 2994 private void onDropExternal(int[] touchXY, Object dragInfo, 2995 CellLayout cellLayout, boolean insertAtFirst, DragView dragView) { 2996 int screen = indexOfChild(cellLayout); 2997 if (dragInfo instanceof PendingAddItemInfo) { 2998 PendingAddItemInfo info = (PendingAddItemInfo) dragInfo; 2999 // When dragging and dropping from customization tray, we deal with creating 3000 // widgets/shortcuts/folders in a slightly different way 3001 switch (info.itemType) { 3002 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 3003 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) info, screen, touchXY); 3004 break; 3005 case LauncherSettings.Favorites.ITEM_TYPE_LIVE_FOLDER: 3006 mLauncher.addLiveFolderFromDrop(info.componentName, screen, touchXY); 3007 break; 3008 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3009 mLauncher.processShortcutFromDrop(info.componentName, screen, touchXY); 3010 break; 3011 default: 3012 throw new IllegalStateException("Unknown item type: " + info.itemType); 3013 } 3014 cellLayout.onDragExit(); 3015 } else { 3016 // This is for other drag/drop cases, like dragging from All Apps 3017 ItemInfo info = (ItemInfo) dragInfo; 3018 View view = null; 3019 3020 switch (info.itemType) { 3021 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 3022 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3023 if (info.container == NO_ID && info instanceof ApplicationInfo) { 3024 // Came from all apps -- make a copy 3025 info = new ShortcutInfo((ApplicationInfo) info); 3026 } 3027 view = mLauncher.createShortcut(R.layout.application, cellLayout, 3028 (ShortcutInfo) info); 3029 break; 3030 case LauncherSettings.Favorites.ITEM_TYPE_USER_FOLDER: 3031 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, 3032 cellLayout, (UserFolderInfo) info, mIconCache); 3033 break; 3034 default: 3035 throw new IllegalStateException("Unknown item type: " + info.itemType); 3036 } 3037 3038 // If the item being dropped is a shortcut and the nearest drop cell also contains 3039 // a shortcut, then create a folder with the two shortcuts. 3040 if (touchXY != null && createUserFolderIfNecessary(view, cellLayout, touchXY[0], 3041 touchXY[1], true)) { 3042 return; 3043 } 3044 3045 mTargetCell = new int[2]; 3046 if (touchXY != null) { 3047 // when dragging and dropping, just find the closest free spot 3048 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], 1, 1, null, cellLayout, 3049 mTargetCell); 3050 } else { 3051 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3052 } 3053 addInScreen(view, indexOfChild(cellLayout), mTargetCell[0], 3054 mTargetCell[1], info.spanX, info.spanY, insertAtFirst); 3055 boolean animateDrop = !mWasSpringLoadedOnDragExit; 3056 cellLayout.onDropChild(view, animateDrop); 3057 cellLayout.animateDrop(); 3058 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 3059 cellLayout.getChildrenLayout().measureChild(view); 3060 3061 if (dragView != null) { 3062 // we have the visual center of the drag view, we need to find the actual 3063 // left and top of the dragView. 3064 int loc[] = new int[2]; 3065 getViewLocationRelativeToSelf(dragView, loc); 3066 setPositionForDropAnimation(dragView, loc[0], loc[1], cellLayout, view); 3067 } 3068 3069 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 3070 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 3071 lp.cellX, lp.cellY); 3072 } 3073 } 3074 3075 /** 3076 * Return the current {@link CellLayout}, correctly picking the destination 3077 * screen while a scroll is in progress. 3078 */ 3079 public CellLayout getCurrentDropLayout() { 3080 return (CellLayout) getChildAt(mNextPage == INVALID_PAGE ? mCurrentPage : mNextPage); 3081 } 3082 3083 /** 3084 * Return the current CellInfo describing our current drag; this method exists 3085 * so that Launcher can sync this object with the correct info when the activity is created/ 3086 * destroyed 3087 * 3088 */ 3089 public CellLayout.CellInfo getDragInfo() { 3090 return mDragInfo; 3091 } 3092 3093 /** 3094 * Calculate the nearest cell where the given object would be dropped. 3095 * 3096 * pixelX and pixelY should be in the coordinate system of layout 3097 */ 3098 private int[] findNearestVacantArea(int pixelX, int pixelY, 3099 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 3100 return layout.findNearestVacantArea( 3101 pixelX, pixelY, spanX, spanY, ignoreView, recycle); 3102 } 3103 3104 /** 3105 * Calculate the nearest cell where the given object would be dropped. 3106 * 3107 * pixelX and pixelY should be in the coordinate system of layout 3108 */ 3109 private int[] findNearestArea(int pixelX, int pixelY, 3110 int spanX, int spanY, CellLayout layout, int[] recycle) { 3111 return layout.findNearestArea( 3112 pixelX, pixelY, spanX, spanY, recycle); 3113 } 3114 3115 void setLauncher(Launcher launcher) { 3116 mLauncher = launcher; 3117 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3118 3119 mCustomizationDrawer = mLauncher.findViewById(R.id.customization_drawer); 3120 if (mCustomizationDrawer != null) { 3121 mCustomizationDrawerContent = 3122 mCustomizationDrawer.findViewById(com.android.internal.R.id.tabcontent); 3123 } 3124 } 3125 3126 public void setDragController(DragController dragController) { 3127 mDragController = dragController; 3128 } 3129 3130 /** 3131 * Called at the end of a drag which originated on the workspace. 3132 */ 3133 public void onDropCompleted(View target, Object dragInfo, boolean success) { 3134 if (success) { 3135 if (target != this && mDragInfo != null) { 3136 final CellLayout cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3137 cellLayout.removeView(mDragInfo.cell); 3138 if (mDragInfo.cell instanceof DropTarget) { 3139 mDragController.removeDropTarget((DropTarget)mDragInfo.cell); 3140 } 3141 // final Object tag = mDragInfo.cell.getTag(); 3142 } 3143 } else if (mDragInfo != null) { 3144 // NOTE: When 'success' is true, onDragExit is called by the DragController before 3145 // calling onDropCompleted(). We call it ourselves here, but maybe this should be 3146 // moved into DragController.cancelDrag(). 3147 doDragExit(); 3148 ((CellLayout) getChildAt(mDragInfo.screen)).onDropChild(mDragInfo.cell, false); 3149 } 3150 mLauncher.unlockScreenOrientation(); 3151 mDragOutline = null; 3152 mDragInfo = null; 3153 } 3154 3155 @Override 3156 public void onDragViewVisible() { 3157 ((View) mDragInfo.cell).setVisibility(View.GONE); 3158 } 3159 3160 public boolean isDropEnabled() { 3161 return true; 3162 } 3163 3164 @Override 3165 protected void onRestoreInstanceState(Parcelable state) { 3166 super.onRestoreInstanceState(state); 3167 Launcher.setScreen(mCurrentPage); 3168 } 3169 3170 @Override 3171 public void scrollLeft() { 3172 if (!mIsSmall && !mIsInUnshrinkAnimation) { 3173 super.scrollLeft(); 3174 } 3175 } 3176 3177 @Override 3178 public void scrollRight() { 3179 if (!mIsSmall && !mIsInUnshrinkAnimation) { 3180 super.scrollRight(); 3181 } 3182 } 3183 3184 @Override 3185 public void onEnterScrollArea(int direction) { 3186 if (!mIsSmall && !mIsInUnshrinkAnimation) { 3187 mInScrollArea = true; 3188 mPendingScrollDirection = direction; 3189 3190 final int page = mCurrentPage + (direction == DragController.SCROLL_LEFT ? -1 : 1); 3191 final CellLayout layout = (CellLayout) getChildAt(page); 3192 3193 if (layout != null) { 3194 layout.setIsDragOverlapping(true); 3195 3196 if (mDragTargetLayout != null) { 3197 mDragTargetLayout.onDragExit(); 3198 mDragTargetLayout = null; 3199 } 3200 // In portrait, need to redraw the edge glow when entering the scroll area 3201 if (getHeight() > getWidth()) { 3202 invalidate(); 3203 } 3204 } 3205 } 3206 } 3207 3208 private void clearAllHovers() { 3209 final int childCount = getChildCount(); 3210 for (int i = 0; i < childCount; i++) { 3211 ((CellLayout) getChildAt(i)).setIsDragOverlapping(false); 3212 } 3213 mSpringLoadedDragController.onDragExit(); 3214 3215 // In portrait, workspace is responsible for drawing the edge glow on adjacent pages, 3216 // so we need to redraw the workspace when this may have changed. 3217 if (getHeight() > getWidth()) { 3218 invalidate(); 3219 } 3220 } 3221 3222 @Override 3223 public void onExitScrollArea() { 3224 if (mInScrollArea) { 3225 mInScrollArea = false; 3226 mPendingScrollDirection = DragController.SCROLL_NONE; 3227 clearAllHovers(); 3228 } 3229 } 3230 3231 public Folder getFolderForTag(Object tag) { 3232 final int screenCount = getChildCount(); 3233 for (int screen = 0; screen < screenCount; screen++) { 3234 ViewGroup currentScreen = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 3235 int count = currentScreen.getChildCount(); 3236 for (int i = 0; i < count; i++) { 3237 View child = currentScreen.getChildAt(i); 3238 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 3239 if (lp.cellHSpan == 4 && lp.cellVSpan == 4 && child instanceof Folder) { 3240 Folder f = (Folder) child; 3241 if (f.getInfo() == tag && f.getInfo().opened) { 3242 return f; 3243 } 3244 } 3245 } 3246 } 3247 return null; 3248 } 3249 3250 public View getViewForTag(Object tag) { 3251 int screenCount = getChildCount(); 3252 for (int screen = 0; screen < screenCount; screen++) { 3253 ViewGroup currentScreen = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 3254 int count = currentScreen.getChildCount(); 3255 for (int i = 0; i < count; i++) { 3256 View child = currentScreen.getChildAt(i); 3257 if (child.getTag() == tag) { 3258 return child; 3259 } 3260 } 3261 } 3262 return null; 3263 } 3264 3265 void clearDropTargets() { 3266 final int screenCount = getChildCount(); 3267 3268 for (int i = 0; i < screenCount; i++) { 3269 final CellLayout layoutParent = (CellLayout) getChildAt(i); 3270 final ViewGroup layout = layoutParent.getChildrenLayout(); 3271 int childCount = layout.getChildCount(); 3272 for (int j = 0; j < childCount; j++) { 3273 View v = layout.getChildAt(j); 3274 if (v instanceof DropTarget) { 3275 mDragController.removeDropTarget((DropTarget) v); 3276 } 3277 } 3278 } 3279 } 3280 3281 void removeItems(final ArrayList<ApplicationInfo> apps) { 3282 final int screenCount = getChildCount(); 3283 final PackageManager manager = getContext().getPackageManager(); 3284 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3285 3286 final HashSet<String> packageNames = new HashSet<String>(); 3287 final int appCount = apps.size(); 3288 for (int i = 0; i < appCount; i++) { 3289 packageNames.add(apps.get(i).componentName.getPackageName()); 3290 } 3291 3292 for (int i = 0; i < screenCount; i++) { 3293 final CellLayout layoutParent = (CellLayout) getChildAt(i); 3294 final ViewGroup layout = layoutParent.getChildrenLayout(); 3295 3296 // Avoid ANRs by treating each screen separately 3297 post(new Runnable() { 3298 public void run() { 3299 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3300 childrenToRemove.clear(); 3301 3302 int childCount = layout.getChildCount(); 3303 for (int j = 0; j < childCount; j++) { 3304 final View view = layout.getChildAt(j); 3305 Object tag = view.getTag(); 3306 3307 if (tag instanceof ShortcutInfo) { 3308 final ShortcutInfo info = (ShortcutInfo) tag; 3309 final Intent intent = info.intent; 3310 final ComponentName name = intent.getComponent(); 3311 3312 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3313 for (String packageName: packageNames) { 3314 if (packageName.equals(name.getPackageName())) { 3315 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3316 childrenToRemove.add(view); 3317 } 3318 } 3319 } 3320 } else if (tag instanceof UserFolderInfo) { 3321 final UserFolderInfo info = (UserFolderInfo) tag; 3322 final ArrayList<ShortcutInfo> contents = info.contents; 3323 final ArrayList<ShortcutInfo> toRemove = new ArrayList<ShortcutInfo>(1); 3324 final int contentsCount = contents.size(); 3325 boolean removedFromFolder = false; 3326 3327 for (int k = 0; k < contentsCount; k++) { 3328 final ShortcutInfo appInfo = contents.get(k); 3329 final Intent intent = appInfo.intent; 3330 final ComponentName name = intent.getComponent(); 3331 3332 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3333 for (String packageName: packageNames) { 3334 if (packageName.equals(name.getPackageName())) { 3335 toRemove.add(appInfo); 3336 LauncherModel.deleteItemFromDatabase(mLauncher, appInfo); 3337 removedFromFolder = true; 3338 } 3339 } 3340 } 3341 } 3342 3343 contents.removeAll(toRemove); 3344 if (removedFromFolder) { 3345 final Folder folder = getOpenFolder(); 3346 if (folder != null) 3347 folder.notifyDataSetChanged(); 3348 } 3349 } else if (tag instanceof LiveFolderInfo) { 3350 final LiveFolderInfo info = (LiveFolderInfo) tag; 3351 final Uri uri = info.uri; 3352 final ProviderInfo providerInfo = manager.resolveContentProvider( 3353 uri.getAuthority(), 0); 3354 3355 if (providerInfo != null) { 3356 for (String packageName: packageNames) { 3357 if (packageName.equals(providerInfo.packageName)) { 3358 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3359 childrenToRemove.add(view); 3360 } 3361 } 3362 } 3363 } else if (tag instanceof LauncherAppWidgetInfo) { 3364 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3365 final AppWidgetProviderInfo provider = 3366 widgets.getAppWidgetInfo(info.appWidgetId); 3367 if (provider != null) { 3368 for (String packageName: packageNames) { 3369 if (packageName.equals(provider.provider.getPackageName())) { 3370 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3371 childrenToRemove.add(view); 3372 } 3373 } 3374 } 3375 } 3376 } 3377 3378 childCount = childrenToRemove.size(); 3379 for (int j = 0; j < childCount; j++) { 3380 View child = childrenToRemove.get(j); 3381 // Note: We can not remove the view directly from CellLayoutChildren as this 3382 // does not re-mark the spaces as unoccupied. 3383 layoutParent.removeViewInLayout(child); 3384 if (child instanceof DropTarget) { 3385 mDragController.removeDropTarget((DropTarget)child); 3386 } 3387 } 3388 3389 if (childCount > 0) { 3390 layout.requestLayout(); 3391 layout.invalidate(); 3392 } 3393 } 3394 }); 3395 } 3396 } 3397 3398 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3399 final int screenCount = getChildCount(); 3400 for (int i = 0; i < screenCount; i++) { 3401 final ViewGroup layout = ((CellLayout) getChildAt(i)).getChildrenLayout(); 3402 int childCount = layout.getChildCount(); 3403 for (int j = 0; j < childCount; j++) { 3404 final View view = layout.getChildAt(j); 3405 Object tag = view.getTag(); 3406 if (tag instanceof ShortcutInfo) { 3407 ShortcutInfo info = (ShortcutInfo)tag; 3408 // We need to check for ACTION_MAIN otherwise getComponent() might 3409 // return null for some shortcuts (for instance, for shortcuts to 3410 // web pages.) 3411 final Intent intent = info.intent; 3412 final ComponentName name = intent.getComponent(); 3413 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3414 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3415 final int appCount = apps.size(); 3416 for (int k = 0; k < appCount; k++) { 3417 ApplicationInfo app = apps.get(k); 3418 if (app.componentName.equals(name)) { 3419 info.setIcon(mIconCache.getIcon(info.intent)); 3420 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 3421 new FastBitmapDrawable(info.getIcon(mIconCache)), 3422 null, null); 3423 } 3424 } 3425 } 3426 } 3427 } 3428 } 3429 } 3430 3431 void moveToDefaultScreen(boolean animate) { 3432 if (mIsSmall || mIsInUnshrinkAnimation) { 3433 mLauncher.showWorkspace(animate, (CellLayout)getChildAt(mDefaultPage)); 3434 } else if (animate) { 3435 snapToPage(mDefaultPage); 3436 } else { 3437 setCurrentPage(mDefaultPage); 3438 } 3439 getChildAt(mDefaultPage).requestFocus(); 3440 } 3441 3442 void setIndicators(Drawable previous, Drawable next) { 3443 mPreviousIndicator = previous; 3444 mNextIndicator = next; 3445 previous.setLevel(mCurrentPage); 3446 next.setLevel(mCurrentPage); 3447 } 3448 3449 @Override 3450 public void syncPages() { 3451 } 3452 3453 @Override 3454 public void syncPageItems(int page) { 3455 } 3456 3457} 3458