Workspace.java revision 50d2442a746ec50471c4a690a638b2a8dfcf745d
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 // NOTE: If we don't update the side pages alpha, then we should not hide the side pages. 1063 // see unshrink(). 1064 if (!LauncherApplication.isScreenXLarge()) return; 1065 1066 final int halfScreenSize = getMeasuredWidth() / 2; 1067 1068 for (int i = 0; i < getChildCount(); i++) { 1069 CellLayout cl = (CellLayout) getChildAt(i); 1070 if (cl != null) { 1071 int totalDistance = getScaledMeasuredWidth(cl) + mPageSpacing; 1072 int delta = screenCenter - (getChildOffset(i) - 1073 getRelativeChildOffset(i) + halfScreenSize); 1074 1075 float scrollProgress = delta / (totalDistance * 1.0f); 1076 scrollProgress = Math.min(scrollProgress, 1.0f); 1077 scrollProgress = Math.max(scrollProgress, -1.0f); 1078 1079 // If the current page (i) is being overscrolled, we use a different 1080 // set of rules for setting the background alpha multiplier. 1081 if ((mScrollX < 0 && i == 0) || (mScrollX > mMaxScrollX && 1082 i == getChildCount() -1 )) { 1083 cl.setBackgroundAlphaMultiplier( 1084 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 1085 mOverScrollPageIndex = i; 1086 } else if (mOverScrollPageIndex != i) { 1087 cl.setBackgroundAlphaMultiplier( 1088 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1089 } 1090 1091 float rotation = WORKSPACE_ROTATION * scrollProgress; 1092 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1093 cl.setTranslationX(translationX); 1094 1095 cl.setRotationY(rotation); 1096 } 1097 } 1098 } 1099 1100 protected void onAttachedToWindow() { 1101 super.onAttachedToWindow(); 1102 mWindowToken = getWindowToken(); 1103 computeScroll(); 1104 mDragController.setWindowToken(mWindowToken); 1105 } 1106 1107 protected void onDetachedFromWindow() { 1108 mWindowToken = null; 1109 } 1110 1111 @Override 1112 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1113 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1114 mUpdateWallpaperOffsetImmediately = true; 1115 } 1116 super.onLayout(changed, left, top, right, bottom); 1117 1118 // if shrinkToBottom() is called on initialization, it has to be deferred 1119 // until after the first call to onLayout so that it has the correct width 1120 if (mWaitingToShrink) { 1121 // shrink can trigger a synchronous onLayout call, so we 1122 // post this to avoid a stack overflow / tangled onLayout calls 1123 post(new Runnable() { 1124 public void run() { 1125 shrink(mWaitingToShrinkState, false); 1126 mWaitingToShrink = false; 1127 } 1128 }); 1129 } 1130 1131 if (LauncherApplication.isInPlaceRotationEnabled()) { 1132 // When the device is rotated, the scroll position of the current screen 1133 // needs to be refreshed 1134 setCurrentPage(getCurrentPage()); 1135 } 1136 } 1137 1138 @Override 1139 protected void onDraw(Canvas canvas) { 1140 updateWallpaperOffsets(); 1141 1142 // Draw the background gradient if necessary 1143 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1144 int alpha = (int) (mBackgroundAlpha * 255); 1145 if (mDrawCustomizeTrayBackground) { 1146 // Find out where to offset the gradient for the customization tray content 1147 mCustomizationDrawer.getLocationOnScreen(mCustomizationDrawerPos); 1148 final Matrix m = mCustomizationDrawer.getMatrix(); 1149 mCustomizationDrawerTransformedPos[0] = 0.0f; 1150 mCustomizationDrawerTransformedPos[1] = mCustomizationDrawerContent.getTop(); 1151 m.mapPoints(mCustomizationDrawerTransformedPos); 1152 1153 // Draw the bg glow behind the gradient 1154 mCustomizeTrayBackground.setAlpha(alpha); 1155 mCustomizeTrayBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1156 getMeasuredHeight()); 1157 mCustomizeTrayBackground.draw(canvas); 1158 1159 // Draw the bg gradient 1160 final int offset = (int) (mCustomizationDrawerPos[1] + 1161 mCustomizationDrawerTransformedPos[1]); 1162 mBackground.setAlpha(alpha); 1163 mBackground.setBounds(mScrollX, offset, mScrollX + getMeasuredWidth(), 1164 offset + getMeasuredHeight()); 1165 mBackground.draw(canvas); 1166 } else { 1167 mBackground.setAlpha(alpha); 1168 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1169 getMeasuredHeight()); 1170 mBackground.draw(canvas); 1171 } 1172 } 1173 super.onDraw(canvas); 1174 } 1175 1176 @Override 1177 protected void dispatchDraw(Canvas canvas) { 1178 if (mIsSmall || mIsInUnshrinkAnimation) { 1179 // Draw all the workspaces if we're small 1180 final int pageCount = getChildCount(); 1181 final long drawingTime = getDrawingTime(); 1182 for (int i = 0; i < pageCount; i++) { 1183 final CellLayout page = (CellLayout) getChildAt(i); 1184 if (page.getVisibility() == VISIBLE 1185 && (page.getAlpha() != 0f || page.getBackgroundAlpha() != 0f)) { 1186 drawChild(canvas, page, drawingTime); 1187 } 1188 } 1189 } else { 1190 super.dispatchDraw(canvas); 1191 1192 final int width = getWidth(); 1193 final int height = getHeight(); 1194 1195 // In portrait orientation, draw the glowing edge when dragging to adjacent screens 1196 if (mInScrollArea && (height > width)) { 1197 final int pageHeight = getChildAt(0).getHeight(); 1198 1199 // This determines the height of the glowing edge: 90% of the page height 1200 final int padding = (int) ((height - pageHeight) * 0.5f + pageHeight * 0.1f); 1201 1202 final CellLayout leftPage = (CellLayout) getChildAt(mCurrentPage - 1); 1203 final CellLayout rightPage = (CellLayout) getChildAt(mCurrentPage + 1); 1204 1205 if (leftPage != null && leftPage.getIsDragOverlapping()) { 1206 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left); 1207 d.setBounds(mScrollX, padding, mScrollX + d.getIntrinsicWidth(), height - padding); 1208 d.draw(canvas); 1209 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 1210 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right); 1211 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), padding, mScrollX + width, height - padding); 1212 d.draw(canvas); 1213 } 1214 } 1215 1216 if (mDropView != null) { 1217 // We are animating an item that was just dropped on the home screen. 1218 // Render its View in the current animation position. 1219 canvas.save(Canvas.MATRIX_SAVE_FLAG); 1220 final int xPos = mDropViewPos[0] - mDropView.getScrollX(); 1221 final int yPos = mDropViewPos[1] - mDropView.getScrollY(); 1222 canvas.translate(xPos, yPos); 1223 mDropView.draw(canvas); 1224 canvas.restore(); 1225 } 1226 } 1227 } 1228 1229 @Override 1230 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1231 if (!mLauncher.isAllAppsVisible()) { 1232 final Folder openFolder = getOpenFolder(); 1233 if (openFolder != null) { 1234 return openFolder.requestFocus(direction, previouslyFocusedRect); 1235 } else { 1236 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1237 } 1238 } 1239 return false; 1240 } 1241 1242 @Override 1243 public int getDescendantFocusability() { 1244 if (mIsSmall) { 1245 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1246 } 1247 return super.getDescendantFocusability(); 1248 } 1249 1250 @Override 1251 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1252 if (!mLauncher.isAllAppsVisible()) { 1253 final Folder openFolder = getOpenFolder(); 1254 if (openFolder != null) { 1255 openFolder.addFocusables(views, direction); 1256 } else { 1257 super.addFocusables(views, direction, focusableMode); 1258 } 1259 } 1260 } 1261 1262 void enableChildrenCache(int fromPage, int toPage) { 1263 if (fromPage > toPage) { 1264 final int temp = fromPage; 1265 fromPage = toPage; 1266 toPage = temp; 1267 } 1268 1269 final int screenCount = getChildCount(); 1270 1271 fromPage = Math.max(fromPage, 0); 1272 toPage = Math.min(toPage, screenCount - 1); 1273 1274 for (int i = fromPage; i <= toPage; i++) { 1275 final CellLayout layout = (CellLayout) getChildAt(i); 1276 layout.setChildrenDrawnWithCacheEnabled(true); 1277 layout.setChildrenDrawingCacheEnabled(true); 1278 } 1279 } 1280 1281 void clearChildrenCache() { 1282 final int screenCount = getChildCount(); 1283 for (int i = 0; i < screenCount; i++) { 1284 final CellLayout layout = (CellLayout) getChildAt(i); 1285 layout.setChildrenDrawnWithCacheEnabled(false); 1286 } 1287 } 1288 1289 @Override 1290 public boolean onTouchEvent(MotionEvent ev) { 1291 if (mLauncher.isAllAppsVisible() && mShrinkState == ShrinkState.BOTTOM_HIDDEN) { 1292 PagedView appsPane; 1293 if (LauncherApplication.isScreenXLarge()) { 1294 appsPane = (PagedView) mLauncher.findViewById(R.id.all_apps_paged_view); 1295 } else { 1296 appsPane = (PagedView) mLauncher.findViewById(R.id.apps_customize_pane_content); 1297 } 1298 1299 if (appsPane != null) { 1300 if (ev.getAction() == MotionEvent.ACTION_UP && 1301 appsPane.getTouchState() == TOUCH_STATE_REST) { 1302 1303 // Cancel any scrolling that is in progress. 1304 if (!mScroller.isFinished()) { 1305 mScroller.abortAnimation(); 1306 } 1307 setCurrentPage(mCurrentPage); 1308 1309 if (mShrinkState == ShrinkState.BOTTOM_HIDDEN) { 1310 mLauncher.showWorkspace(true); 1311 } 1312 appsPane.onTouchEvent(ev); 1313 return true; 1314 } else { 1315 return appsPane.onTouchEvent(ev); 1316 } 1317 } 1318 } 1319 return super.onTouchEvent(ev); 1320 } 1321 1322 protected void enableChildrenLayers(boolean enable) { 1323 for (int i = 0; i < getPageCount(); i++) { 1324 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(enable); 1325 } 1326 } 1327 @Override 1328 protected void pageBeginMoving() { 1329 enableChildrenLayers(true); 1330 super.pageBeginMoving(); 1331 } 1332 1333 @Override 1334 protected void pageEndMoving() { 1335 if (!mIsSmall && !mIsInUnshrinkAnimation) { 1336 enableChildrenLayers(false); 1337 } 1338 super.pageEndMoving(); 1339 } 1340 1341 @Override 1342 protected void onWallpaperTap(MotionEvent ev) { 1343 final int[] position = mTempCell; 1344 getLocationOnScreen(position); 1345 1346 int pointerIndex = ev.getActionIndex(); 1347 position[0] += (int) ev.getX(pointerIndex); 1348 position[1] += (int) ev.getY(pointerIndex); 1349 1350 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1351 ev.getAction() == MotionEvent.ACTION_UP 1352 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1353 position[0], position[1], 0, null); 1354 } 1355 1356 public boolean isSmall() { 1357 return mIsSmall; 1358 } 1359 1360 private float getYScaleForScreen(int screen) { 1361 int x = Math.abs(screen - 2); 1362 1363 // TODO: This should be generalized for use with arbitrary rotation angles. 1364 switch(x) { 1365 case 0: return EXTRA_SCALE_FACTOR_0; 1366 case 1: return EXTRA_SCALE_FACTOR_1; 1367 case 2: return EXTRA_SCALE_FACTOR_2; 1368 } 1369 return 1.0f; 1370 } 1371 1372 public void shrink(ShrinkState shrinkState) { 1373 shrink(shrinkState, true); 1374 } 1375 1376 private int getCustomizeDrawerHeight() { 1377 TabHost customizationDrawer = mLauncher.getCustomizationDrawer(); 1378 int height = customizationDrawer.getHeight(); 1379 TabWidget tabWidget = (TabWidget) 1380 customizationDrawer.findViewById(com.android.internal.R.id.tabs); 1381 if (tabWidget.getTabCount() > 0) { 1382 TextView tabText = (TextView) tabWidget.getChildTabViewAt(0); 1383 // subtract the empty space above the tab text 1384 height -= ((tabWidget.getHeight() - tabText.getLineHeight())) / 2; 1385 } 1386 return height; 1387 } 1388 1389 // we use this to shrink the workspace for the all apps view and the customize view 1390 public void shrink(ShrinkState shrinkState, boolean animated) { 1391 if (mFirstLayout) { 1392 // (mFirstLayout == "first layout has not happened yet") 1393 // if we get a call to shrink() as part of our initialization (for example, if 1394 // Launcher is started in All Apps mode) then we need to wait for a layout call 1395 // to get our width so we can layout the mini-screen views correctly 1396 mWaitingToShrink = true; 1397 mWaitingToShrinkState = shrinkState; 1398 return; 1399 } 1400 // Stop any scrolling, move to the current page right away 1401 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1402 if (!mIsDragInProcess) { 1403 updateWhichPagesAcceptDrops(shrinkState); 1404 } 1405 1406 CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 1407 if (currentPage == null) { 1408 Log.w(TAG, "currentPage is NULL! mCurrentPage " + mCurrentPage 1409 + " mNextPage " + mNextPage); 1410 return; 1411 } 1412 if (currentPage.getBackgroundAlphaMultiplier() < 1.0f) { 1413 currentPage.setBackgroundAlpha(0.0f); 1414 } 1415 currentPage.setBackgroundAlphaMultiplier(1.0f); 1416 1417 mIsSmall = true; 1418 mShrinkState = shrinkState; 1419 1420 // we intercept and reject all touch events when we're small, so be sure to reset the state 1421 mTouchState = TOUCH_STATE_REST; 1422 mActivePointerId = INVALID_POINTER; 1423 1424 final Resources res = getResources(); 1425 final int screenWidth = getWidth(); 1426 final int screenHeight = getHeight(); 1427 1428 // Making the assumption that all pages have the same width as the 0th 1429 final int pageWidth = getChildAt(0).getMeasuredWidth(); 1430 final int pageHeight = getChildAt(0).getMeasuredHeight(); 1431 1432 final int scaledPageWidth = (int) (SHRINK_FACTOR * pageWidth); 1433 final int scaledPageHeight = (int) (SHRINK_FACTOR * pageHeight); 1434 final float extraScaledSpacing = res.getDimension(R.dimen.smallScreenExtraSpacing); 1435 1436 final int screenCount = getChildCount(); 1437 float totalWidth = screenCount * scaledPageWidth + (screenCount - 1) * extraScaledSpacing; 1438 1439 boolean isPortrait = getMeasuredHeight() > getMeasuredWidth(); 1440 float y = (isPortrait ? 1441 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginPortrait) : 1442 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginLandscape)); 1443 float finalAlpha = 1.0f; 1444 float extraShrinkFactor = 1.0f; 1445 1446 if (shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1447 y = screenHeight - y - scaledPageHeight; 1448 } else if (shrinkState == ShrinkState.BOTTOM_HIDDEN) { 1449 // We shrink and disappear to nothing in the case of all apps 1450 // (which is when we shrink to the bottom) 1451 y = screenHeight - y - scaledPageHeight; 1452 finalAlpha = 0.0f; 1453 } else if (shrinkState == ShrinkState.MIDDLE) { 1454 y = screenHeight / 2 - scaledPageHeight / 2; 1455 finalAlpha = 1.0f; 1456 } else if (shrinkState == ShrinkState.TOP) { 1457 y = (screenHeight - getCustomizeDrawerHeight() - scaledPageHeight) / 2; 1458 } 1459 1460 int duration; 1461 if (shrinkState == ShrinkState.BOTTOM_HIDDEN || shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1462 duration = res.getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1463 } else { 1464 duration = res.getInteger(R.integer.config_customizeWorkspaceShrinkTime); 1465 } 1466 1467 // We animate all the screens to the centered position in workspace 1468 // At the same time, the screens become greyed/dimmed 1469 1470 // newX is initialized to the left-most position of the centered screens 1471 float x = mScroller.getFinalX() + screenWidth / 2 - totalWidth / 2; 1472 1473 // We are going to scale about the center of the view, so we need to adjust the positions 1474 // of the views accordingly 1475 x -= (pageWidth - scaledPageWidth) / 2.0f; 1476 y -= (pageHeight - scaledPageHeight) / 2.0f; 1477 1478 if (mAnimator != null) { 1479 mAnimator.cancel(); 1480 } 1481 1482 mAnimator = new AnimatorSet(); 1483 1484 final float[] oldXs = new float[getChildCount()]; 1485 final float[] oldYs = new float[getChildCount()]; 1486 final float[] oldScaleXs = new float[getChildCount()]; 1487 final float[] oldScaleYs = new float[getChildCount()]; 1488 final float[] oldBackgroundAlphas = new float[getChildCount()]; 1489 final float[] oldAlphas = new float[getChildCount()]; 1490 final float[] oldRotationYs = new float[getChildCount()]; 1491 final float[] newXs = new float[getChildCount()]; 1492 final float[] newYs = new float[getChildCount()]; 1493 final float[] newScaleXs = new float[getChildCount()]; 1494 final float[] newScaleYs = new float[getChildCount()]; 1495 final float[] newBackgroundAlphas = new float[getChildCount()]; 1496 final float[] newAlphas = new float[getChildCount()]; 1497 final float[] newRotationYs = new float[getChildCount()]; 1498 1499 for (int i = 0; i < screenCount; i++) { 1500 final CellLayout cl = (CellLayout) getChildAt(i); 1501 1502 float rotation = (-i + 2) * WORKSPACE_ROTATION; 1503 float rotationScaleX = (float) (1.0f / Math.cos(Math.PI * rotation / 180.0f)); 1504 float rotationScaleY = getYScaleForScreen(i); 1505 1506 oldAlphas[i] = cl.getAlpha(); 1507 newAlphas[i] = finalAlpha; 1508 if (animated && (oldAlphas[i] != 0f || newAlphas[i] != 0f)) { 1509 // if the CellLayout will be visible during the animation, force building its 1510 // hardware layer immediately so we don't see a blip later in the animation 1511 cl.buildChildrenLayer(); 1512 } 1513 if (animated) { 1514 oldXs[i] = cl.getX(); 1515 oldYs[i] = cl.getY(); 1516 oldScaleXs[i] = cl.getScaleX(); 1517 oldScaleYs[i] = cl.getScaleY(); 1518 oldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1519 oldRotationYs[i] = cl.getRotationY(); 1520 newXs[i] = x; 1521 newYs[i] = y; 1522 newScaleXs[i] = SHRINK_FACTOR * rotationScaleX * extraShrinkFactor; 1523 newScaleYs[i] = SHRINK_FACTOR * rotationScaleY * extraShrinkFactor; 1524 newBackgroundAlphas[i] = finalAlpha; 1525 newRotationYs[i] = rotation; 1526 } else { 1527 cl.setX((int)x); 1528 cl.setY((int)y); 1529 cl.setScaleX(SHRINK_FACTOR * rotationScaleX * extraShrinkFactor); 1530 cl.setScaleY(SHRINK_FACTOR * rotationScaleY * extraShrinkFactor); 1531 cl.setBackgroundAlpha(finalAlpha); 1532 cl.setAlpha(finalAlpha); 1533 cl.setRotationY(rotation); 1534 mShrinkAnimationListener.onAnimationEnd(null); 1535 } 1536 // increment newX for the next screen 1537 x += scaledPageWidth + extraScaledSpacing; 1538 } 1539 1540 float wallpaperOffset = 0.5f; 1541 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 1542 int wallpaperTravelHeight = (int) (display.getHeight() * 1543 wallpaperTravelToScreenHeightRatio(display.getWidth(), display.getHeight())); 1544 float offsetFromCenter = (wallpaperTravelHeight / (float) mWallpaperHeight) / 2f; 1545 boolean isLandscape = display.getWidth() > display.getHeight(); 1546 1547 switch (shrinkState) { 1548 // animating in 1549 case TOP: 1550 // customize 1551 wallpaperOffset = 0.5f + offsetFromCenter; 1552 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.46f : 0.44f); 1553 break; 1554 case MIDDLE: 1555 case SPRING_LOADED: 1556 wallpaperOffset = 0.5f; 1557 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.34f : 0.32f); 1558 break; 1559 case BOTTOM_HIDDEN: 1560 case BOTTOM_VISIBLE: 1561 // allapps 1562 wallpaperOffset = 0.5f - offsetFromCenter; 1563 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.34f : 0.32f); 1564 break; 1565 } 1566 1567 setLayoutScale(1.0f); 1568 if (animated) { 1569 mWallpaperOffset.setHorizontalCatchupConstant(0.46f); 1570 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1571 1572 mSyncWallpaperOffsetWithScroll = false; 1573 1574 ValueAnimator animWithInterpolator = 1575 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1576 animWithInterpolator.setInterpolator(mZoomOutInterpolator); 1577 1578 final float oldHorizontalWallpaperOffset = getHorizontalWallpaperOffset(); 1579 final float oldVerticalWallpaperOffset = getVerticalWallpaperOffset(); 1580 final float newHorizontalWallpaperOffset = 0.5f; 1581 final float newVerticalWallpaperOffset = wallpaperOffset; 1582 animWithInterpolator.addUpdateListener(new LauncherAnimatorUpdateListener() { 1583 public void onAnimationUpdate(float a, float b) { 1584 if (b == 0f) { 1585 // an optimization, and required for correct behavior. 1586 return; 1587 } 1588 fastInvalidate(); 1589 setHorizontalWallpaperOffset( 1590 a * oldHorizontalWallpaperOffset + b * newHorizontalWallpaperOffset); 1591 setVerticalWallpaperOffset( 1592 a * oldVerticalWallpaperOffset + b * newVerticalWallpaperOffset); 1593 for (int i = 0; i < screenCount; i++) { 1594 final CellLayout cl = (CellLayout) getChildAt(i); 1595 cl.fastInvalidate(); 1596 cl.setFastX(a * oldXs[i] + b * newXs[i]); 1597 cl.setFastY(a * oldYs[i] + b * newYs[i]); 1598 cl.setFastScaleX(a * oldScaleXs[i] + b * newScaleXs[i]); 1599 cl.setFastScaleY(a * oldScaleYs[i] + b * newScaleYs[i]); 1600 cl.setFastBackgroundAlpha( 1601 a * oldBackgroundAlphas[i] + b * newBackgroundAlphas[i]); 1602 cl.setFastAlpha(a * oldAlphas[i] + b * newAlphas[i]); 1603 cl.setFastRotationY(a * oldRotationYs[i] + b * newRotationYs[i]); 1604 } 1605 } 1606 }); 1607 mAnimator.playTogether(animWithInterpolator); 1608 mAnimator.addListener(mShrinkAnimationListener); 1609 mAnimator.start(); 1610 } else { 1611 setVerticalWallpaperOffset(wallpaperOffset); 1612 setHorizontalWallpaperOffset(0.5f); 1613 updateWallpaperOffsetImmediately(); 1614 } 1615 setChildrenDrawnWithCacheEnabled(true); 1616 1617 if (shrinkState == ShrinkState.TOP) { 1618 showBackgroundGradientForCustomizeTray(); 1619 } else { 1620 showBackgroundGradientForAllApps(); 1621 } 1622 } 1623 1624 /* 1625 * This interpolator emulates the rate at which the perceived scale of an object changes 1626 * as its distance from a camera increases. When this interpolator is applied to a scale 1627 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1628 * from the camera. 1629 */ 1630 static class ZInterpolator implements TimeInterpolator { 1631 private float focalLength; 1632 1633 public ZInterpolator(float foc) { 1634 focalLength = foc; 1635 } 1636 1637 public float getInterpolation(float input) { 1638 return (1.0f - focalLength / (focalLength + input)) / 1639 (1.0f - focalLength / (focalLength + 1.0f)); 1640 } 1641 } 1642 1643 /* 1644 * The exact reverse of ZInterpolator. 1645 */ 1646 static class InverseZInterpolator implements TimeInterpolator { 1647 private ZInterpolator zInterpolator; 1648 public InverseZInterpolator(float foc) { 1649 zInterpolator = new ZInterpolator(foc); 1650 } 1651 public float getInterpolation(float input) { 1652 return 1 - zInterpolator.getInterpolation(1 - input); 1653 } 1654 } 1655 1656 /* 1657 * ZInterpolator compounded with an ease-out. 1658 */ 1659 static class ZoomOutInterpolator implements TimeInterpolator { 1660 private final ZInterpolator zInterpolator = new ZInterpolator(0.2f); 1661 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(1.8f); 1662 1663 public float getInterpolation(float input) { 1664 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1665 } 1666 } 1667 1668 /* 1669 * InvereZInterpolator compounded with an ease-out. 1670 */ 1671 static class ZoomInInterpolator implements TimeInterpolator { 1672 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1673 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1674 1675 public float getInterpolation(float input) { 1676 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1677 } 1678 } 1679 1680 private final ZoomOutInterpolator mZoomOutInterpolator = new ZoomOutInterpolator(); 1681 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1682 1683 private void updateWhichPagesAcceptDrops(ShrinkState state) { 1684 updateWhichPagesAcceptDropsHelper(state, false, 1, 1); 1685 } 1686 1687 private void updateWhichPagesAcceptDropsDuringDrag(ShrinkState state, int spanX, int spanY) { 1688 updateWhichPagesAcceptDropsHelper(state, true, spanX, spanY); 1689 } 1690 1691 private void updateWhichPagesAcceptDropsHelper( 1692 ShrinkState state, boolean isDragHappening, int spanX, int spanY) { 1693 final int screenCount = getChildCount(); 1694 for (int i = 0; i < screenCount; i++) { 1695 CellLayout cl = (CellLayout) getChildAt(i); 1696 cl.setIsDragOccuring(isDragHappening); 1697 if (state == null) { 1698 // If we are not in a shrunken state, mark all cell layouts as droppable (if they 1699 // have the space) 1700 cl.setAcceptsDrops(cl.findCellForSpan(null, spanX, spanY)); 1701 } else { 1702 switch (state) { 1703 case TOP: 1704 cl.setIsDefaultDropTarget(i == mCurrentPage); 1705 case BOTTOM_HIDDEN: 1706 case BOTTOM_VISIBLE: 1707 case SPRING_LOADED: 1708 if (state != ShrinkState.TOP) { 1709 cl.setIsDefaultDropTarget(false); 1710 } 1711 if (!isDragHappening) { 1712 // even if a drag isn't happening, we don't want to show a screen as 1713 // accepting drops if it doesn't have at least one free cell 1714 spanX = 1; 1715 spanY = 1; 1716 } 1717 // the page accepts drops if we can find at least one empty spot 1718 cl.setAcceptsDrops(cl.findCellForSpan(null, spanX, spanY)); 1719 break; 1720 default: 1721 throw new RuntimeException("Unhandled ShrinkState " + state); 1722 } 1723 } 1724 } 1725 } 1726 1727 /* 1728 * 1729 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1730 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1731 * 1732 * These methods mark the appropriate pages as accepting drops (which alters their visual 1733 * appearance). 1734 * 1735 */ 1736 public void onDragStartedWithItem(View v) { 1737 mIsDragInProcess = true; 1738 1739 final Canvas canvas = new Canvas(); 1740 1741 // We need to add extra padding to the bitmap to make room for the glow effect 1742 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1743 1744 // The outline is used to visualize where the item will land if dropped 1745 mDragOutline = createDragOutline(v, canvas, bitmapPadding); 1746 } 1747 1748 public void onDragStartedWithItemSpans(int spanX, int spanY, Bitmap b) { 1749 mIsDragInProcess = true; 1750 1751 final Canvas canvas = new Canvas(); 1752 1753 // We need to add extra padding to the bitmap to make room for the glow effect 1754 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1755 1756 CellLayout cl = (CellLayout) getChildAt(0); 1757 1758 int[] size = cl.cellSpansToSize(spanX, spanY); 1759 1760 // The outline is used to visualize where the item will land if dropped 1761 mDragOutline = createDragOutline(b, canvas, bitmapPadding, size[0], size[1]); 1762 1763 updateWhichPagesAcceptDropsDuringDrag(mShrinkState, spanX, spanY); 1764 } 1765 1766 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1767 // never dragged over 1768 public void onDragStopped(boolean success) { 1769 mLastDragView = null; 1770 // In the success case, DragController has already called onDragExit() 1771 if (!success) { 1772 doDragExit(); 1773 } 1774 mIsDragInProcess = false; 1775 updateWhichPagesAcceptDrops(mShrinkState); 1776 } 1777 1778 // We call this when we trigger an unshrink by clicking on the CellLayout cl 1779 public void unshrink(CellLayout clThatWasClicked) { 1780 unshrink(clThatWasClicked, false); 1781 } 1782 1783 public void unshrink(CellLayout clThatWasClicked, boolean springLoaded) { 1784 int newCurrentPage = indexOfChild(clThatWasClicked); 1785 if (mIsSmall) { 1786 if (springLoaded) { 1787 setLayoutScale(SPRING_LOADED_DRAG_SHRINK_FACTOR); 1788 } 1789 scrollToNewPageWithoutMovingPages(newCurrentPage); 1790 unshrink(true, springLoaded); 1791 } 1792 } 1793 1794 1795 public void enterSpringLoadedDragMode(CellLayout clThatWasClicked) { 1796 mShrinkState = ShrinkState.SPRING_LOADED; 1797 unshrink(clThatWasClicked, true); 1798 mDragTargetLayout.onDragEnter(); 1799 } 1800 1801 public void exitSpringLoadedDragMode(ShrinkState shrinkState) { 1802 shrink(shrinkState); 1803 if (mDragTargetLayout != null) { 1804 mDragTargetLayout.onDragExit(); 1805 } 1806 } 1807 1808 public void exitWidgetResizeMode() { 1809 DragLayer dragLayer = (DragLayer) mLauncher.findViewById(R.id.drag_layer); 1810 dragLayer.clearAllResizeFrames(); 1811 } 1812 1813 void unshrink(boolean animated) { 1814 unshrink(animated, false); 1815 } 1816 1817 void unshrink(boolean animated, boolean springLoaded) { 1818 mWaitingToShrink = false; 1819 if (mIsSmall) { 1820 float finalScaleFactor = 1.0f; 1821 float finalBackgroundAlpha = 0.0f; 1822 if (springLoaded) { 1823 finalScaleFactor = SPRING_LOADED_DRAG_SHRINK_FACTOR; 1824 finalBackgroundAlpha = 1.0f; 1825 } else { 1826 mIsSmall = false; 1827 } 1828 if (mAnimator != null) { 1829 mAnimator.cancel(); 1830 } 1831 1832 mAnimator = new AnimatorSet(); 1833 final int screenCount = getChildCount(); 1834 1835 final int duration = getResources().getInteger(R.integer.config_workspaceUnshrinkTime); 1836 1837 final float[] oldTranslationXs = new float[getChildCount()]; 1838 final float[] oldTranslationYs = new float[getChildCount()]; 1839 final float[] oldScaleXs = new float[getChildCount()]; 1840 final float[] oldScaleYs = new float[getChildCount()]; 1841 final float[] oldBackgroundAlphas = new float[getChildCount()]; 1842 final float[] oldBackgroundAlphaMultipliers = new float[getChildCount()]; 1843 final float[] oldAlphas = new float[getChildCount()]; 1844 final float[] oldRotationYs = new float[getChildCount()]; 1845 final float[] newTranslationXs = new float[getChildCount()]; 1846 final float[] newTranslationYs = new float[getChildCount()]; 1847 final float[] newScaleXs = new float[getChildCount()]; 1848 final float[] newScaleYs = new float[getChildCount()]; 1849 final float[] newBackgroundAlphas = new float[getChildCount()]; 1850 final float[] newBackgroundAlphaMultipliers = new float[getChildCount()]; 1851 final float[] newAlphas = new float[getChildCount()]; 1852 final float[] newRotationYs = new float[getChildCount()]; 1853 1854 for (int i = 0; i < screenCount; i++) { 1855 final CellLayout cl = (CellLayout)getChildAt(i); 1856 float finalAlphaValue = 0f; 1857 float rotation = 0f; 1858 if (LauncherApplication.isScreenXLarge()) { 1859 finalAlphaValue = (i == mCurrentPage) ? 1.0f : 0.0f; 1860 1861 if (i < mCurrentPage) { 1862 rotation = WORKSPACE_ROTATION; 1863 } else if (i > mCurrentPage) { 1864 rotation = -WORKSPACE_ROTATION; 1865 } 1866 } else { 1867 // Don't hide the side panes on the phone if we don't also update the side pages 1868 // alpha. See screenScrolled(). 1869 finalAlphaValue = 1f; 1870 } 1871 float finalAlphaMultiplierValue = 1872 ((i == mCurrentPage) && (mShrinkState != ShrinkState.SPRING_LOADED)) ? 1873 0.0f : 1.0f; 1874 1875 float translation = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1876 1877 oldAlphas[i] = cl.getAlpha(); 1878 newAlphas[i] = finalAlphaValue; 1879 if (animated) { 1880 oldTranslationXs[i] = cl.getTranslationX(); 1881 oldTranslationYs[i] = cl.getTranslationY(); 1882 oldScaleXs[i] = cl.getScaleX(); 1883 oldScaleYs[i] = cl.getScaleY(); 1884 oldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1885 oldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1886 oldRotationYs[i] = cl.getRotationY(); 1887 1888 newTranslationXs[i] = translation; 1889 newTranslationYs[i] = 0f; 1890 newScaleXs[i] = finalScaleFactor; 1891 newScaleYs[i] = finalScaleFactor; 1892 newBackgroundAlphas[i] = finalBackgroundAlpha; 1893 newBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1894 newRotationYs[i] = rotation; 1895 } else { 1896 cl.setTranslationX(translation); 1897 cl.setTranslationY(0.0f); 1898 cl.setScaleX(finalScaleFactor); 1899 cl.setScaleY(finalScaleFactor); 1900 cl.setBackgroundAlpha(0.0f); 1901 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1902 cl.setAlpha(finalAlphaValue); 1903 cl.setRotationY(rotation); 1904 mUnshrinkAnimationListener.onAnimationEnd(null); 1905 } 1906 } 1907 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 1908 boolean isLandscape = display.getWidth() > display.getHeight(); 1909 switch (mShrinkState) { 1910 // animating out 1911 case TOP: 1912 // customize 1913 if (animated) { 1914 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.65f : 0.62f); 1915 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.65f : 0.62f); 1916 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1917 } 1918 break; 1919 case MIDDLE: 1920 case SPRING_LOADED: 1921 if (animated) { 1922 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.49f : 0.46f); 1923 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.49f : 0.46f); 1924 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1925 } 1926 break; 1927 case BOTTOM_HIDDEN: 1928 case BOTTOM_VISIBLE: 1929 // all apps 1930 if (animated) { 1931 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.65f : 0.65f); 1932 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.65f : 0.65f); 1933 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1934 } 1935 break; 1936 } 1937 if (animated) { 1938 ValueAnimator animWithInterpolator = 1939 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1940 animWithInterpolator.setInterpolator(mZoomInInterpolator); 1941 1942 final float oldHorizontalWallpaperOffset = getHorizontalWallpaperOffset(); 1943 final float oldVerticalWallpaperOffset = getVerticalWallpaperOffset(); 1944 final float newHorizontalWallpaperOffset = wallpaperOffsetForCurrentScroll(); 1945 final float newVerticalWallpaperOffset = 0.5f; 1946 animWithInterpolator.addUpdateListener(new LauncherAnimatorUpdateListener() { 1947 public void onAnimationUpdate(float a, float b) { 1948 if (b == 0f) { 1949 // an optimization, but not required 1950 return; 1951 } 1952 fastInvalidate(); 1953 setHorizontalWallpaperOffset( 1954 a * oldHorizontalWallpaperOffset + b * newHorizontalWallpaperOffset); 1955 setVerticalWallpaperOffset( 1956 a * oldVerticalWallpaperOffset + b * newVerticalWallpaperOffset); 1957 for (int i = 0; i < screenCount; i++) { 1958 final CellLayout cl = (CellLayout) getChildAt(i); 1959 cl.fastInvalidate(); 1960 cl.setFastTranslationX( 1961 a * oldTranslationXs[i] + b * newTranslationXs[i]); 1962 cl.setFastTranslationY( 1963 a * oldTranslationYs[i] + b * newTranslationYs[i]); 1964 cl.setFastScaleX(a * oldScaleXs[i] + b * newScaleXs[i]); 1965 cl.setFastScaleY(a * oldScaleYs[i] + b * newScaleYs[i]); 1966 cl.setFastBackgroundAlpha( 1967 a * oldBackgroundAlphas[i] + b * newBackgroundAlphas[i]); 1968 cl.setBackgroundAlphaMultiplier(a * oldBackgroundAlphaMultipliers[i] + 1969 b * newBackgroundAlphaMultipliers[i]); 1970 cl.setFastAlpha(a * oldAlphas[i] + b * newAlphas[i]); 1971 } 1972 } 1973 }); 1974 1975 ValueAnimator rotationAnim = 1976 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1977 rotationAnim.setInterpolator(new DecelerateInterpolator(2.0f)); 1978 rotationAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1979 public void onAnimationUpdate(float a, float b) { 1980 // don't invalidate workspace because we did it above 1981 if (b == 0f) { 1982 // an optimization, but not required 1983 return; 1984 } 1985 for (int i = 0; i < screenCount; i++) { 1986 final CellLayout cl = (CellLayout) getChildAt(i); 1987 cl.setFastRotationY(a * oldRotationYs[i] + b * newRotationYs[i]); 1988 } 1989 } 1990 }); 1991 1992 mAnimator.playTogether(animWithInterpolator, rotationAnim); 1993 // If we call this when we're not animated, onAnimationEnd is never called on 1994 // the listener; make sure we only use the listener when we're actually animating 1995 mAnimator.addListener(mUnshrinkAnimationListener); 1996 mAnimator.start(); 1997 } else { 1998 setHorizontalWallpaperOffset(wallpaperOffsetForCurrentScroll()); 1999 setVerticalWallpaperOffset(0.5f); 2000 updateWallpaperOffsetImmediately(); 2001 } 2002 } 2003 2004 if (!springLoaded) { 2005 hideBackgroundGradient(); 2006 } 2007 } 2008 2009 /** 2010 * Draw the View v into the given Canvas. 2011 * 2012 * @param v the view to draw 2013 * @param destCanvas the canvas to draw on 2014 * @param padding the horizontal and vertical padding to use when drawing 2015 */ 2016 private void drawDragView(View v, Canvas destCanvas, int padding) { 2017 final Rect clipRect = mTempRect; 2018 v.getDrawingRect(clipRect); 2019 2020 // For a TextView, adjust the clip rect so that we don't include the text label 2021 if (v instanceof BubbleTextView) { 2022 final BubbleTextView tv = (BubbleTextView) v; 2023 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 2024 tv.getLayout().getLineTop(0); 2025 } else if (v instanceof TextView) { 2026 final TextView tv = (TextView) v; 2027 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 2028 tv.getLayout().getLineTop(0); 2029 } 2030 2031 // Draw the View into the bitmap. 2032 // The translate of scrollX and scrollY is necessary when drawing TextViews, because 2033 // they set scrollX and scrollY to large values to achieve centered text 2034 2035 destCanvas.save(); 2036 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 2037 destCanvas.clipRect(clipRect, Op.REPLACE); 2038 v.draw(destCanvas); 2039 destCanvas.restore(); 2040 } 2041 2042 /** 2043 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2044 * Responsibility for the bitmap is transferred to the caller. 2045 */ 2046 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 2047 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 2048 final Bitmap b = Bitmap.createBitmap( 2049 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 2050 2051 canvas.setBitmap(b); 2052 drawDragView(v, canvas, padding); 2053 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2054 return b; 2055 } 2056 2057 /** 2058 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2059 * Responsibility for the bitmap is transferred to the caller. 2060 */ 2061 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h) { 2062 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 2063 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 2064 canvas.setBitmap(b); 2065 2066 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 2067 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 2068 (h - padding) / (float) orig.getHeight()); 2069 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 2070 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 2071 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 2072 2073 // center the image 2074 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 2075 2076 Paint p = new Paint(); 2077 p.setFilterBitmap(true); 2078 canvas.drawBitmap(orig, src, dst, p); 2079 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2080 2081 return b; 2082 } 2083 2084 /** 2085 * Creates a drag outline to represent a drop (that we don't have the actual information for 2086 * yet). May be changed in the future to alter the drop outline slightly depending on the 2087 * clip description mime data. 2088 */ 2089 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 2090 Resources r = getResources(); 2091 final int outlineColor = r.getColor(R.color.drag_outline_color); 2092 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 2093 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 2094 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 2095 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 2096 final Bitmap b = Bitmap.createBitmap( 2097 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 2098 2099 canvas.setBitmap(b); 2100 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 2101 rectRadius, rectRadius, mExternalDragOutlinePaint); 2102 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2103 return b; 2104 } 2105 2106 /** 2107 * Returns a new bitmap to show when the given View is being dragged around. 2108 * Responsibility for the bitmap is transferred to the caller. 2109 */ 2110 private Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 2111 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 2112 final Bitmap b = Bitmap.createBitmap( 2113 mDragOutline.getWidth(), mDragOutline.getHeight(), Bitmap.Config.ARGB_8888); 2114 2115 canvas.setBitmap(b); 2116 canvas.drawBitmap(mDragOutline, 0, 0, null); 2117 drawDragView(v, canvas, padding); 2118 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 2119 2120 return b; 2121 } 2122 2123 void startDrag(CellLayout.CellInfo cellInfo) { 2124 View child = cellInfo.cell; 2125 2126 // Make sure the drag was started by a long press as opposed to a long click. 2127 if (!child.isInTouchMode()) { 2128 return; 2129 } 2130 2131 mDragInfo = cellInfo; 2132 2133 CellLayout current = (CellLayout) getChildAt(cellInfo.screen); 2134 current.onDragChild(child); 2135 2136 child.clearFocus(); 2137 child.setPressed(false); 2138 2139 final Canvas canvas = new Canvas(); 2140 2141 // We need to add extra padding to the bitmap to make room for the glow effect 2142 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2143 2144 // The outline is used to visualize where the item will land if dropped 2145 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 2146 2147 // The drag bitmap follows the touch point around on the screen 2148 final Bitmap b = createDragBitmap(child, canvas, bitmapPadding); 2149 2150 final int bmpWidth = b.getWidth(); 2151 final int bmpHeight = b.getHeight(); 2152 2153 child.getLocationOnScreen(mTempXY); 2154 final int screenX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 2155 final int screenY = (int) mTempXY[1] + (child.getHeight() - bmpHeight) / 2; 2156 2157 Rect dragRect = null; 2158 if (child instanceof BubbleTextView) { 2159 int iconSize = getResources().getDimensionPixelSize(R.dimen.app_icon_size); 2160 int top = child.getPaddingTop(); 2161 int left = (bmpWidth - iconSize) / 2; 2162 int right = left + iconSize; 2163 int bottom = top + iconSize; 2164 dragRect = new Rect(left, top, right, bottom); 2165 } 2166 2167 mLauncher.lockScreenOrientation(); 2168 mDragController.startDrag(b, screenX, screenY, this, child.getTag(), 2169 DragController.DRAG_ACTION_MOVE, dragRect); 2170 b.recycle(); 2171 } 2172 2173 void addApplicationShortcut(ShortcutInfo info, int screen, int cellX, int cellY, 2174 boolean insertAtFirst, int intersectX, int intersectY) { 2175 final CellLayout cellLayout = (CellLayout) getChildAt(screen); 2176 View view = mLauncher.createShortcut(R.layout.application, cellLayout, (ShortcutInfo) info); 2177 2178 final int[] cellXY = new int[2]; 2179 cellLayout.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 2180 addInScreen(view, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 2181 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 2182 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2183 cellXY[0], cellXY[1]); 2184 } 2185 2186 private void setPositionForDropAnimation( 2187 View dragView, int dragViewX, int dragViewY, View parent, View child) { 2188 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 2189 2190 // Based on the position of the drag view, find the top left of the original view 2191 int viewX = dragViewX + (dragView.getWidth() - child.getMeasuredWidth()) / 2; 2192 int viewY = dragViewY + (dragView.getHeight() - child.getMeasuredHeight()) / 2; 2193 2194 // Set its old pos (in the new parent's coordinates); it will be animated 2195 // in animateViewIntoPosition after the next layout pass 2196 lp.oldX = viewX - (parent.getLeft() - mScrollX); 2197 lp.oldY = viewY - (parent.getTop() - mScrollY); 2198 } 2199 2200 /* 2201 * We should be careful that this method cannot result in any synchronous requestLayout() 2202 * calls, as it is called from onLayout(). 2203 */ 2204 public void animateViewIntoPosition(final View view) { 2205 final CellLayout parent = (CellLayout) view.getParent().getParent(); 2206 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2207 2208 // Convert the animation params to be relative to the Workspace, not the CellLayout 2209 final int fromX = lp.oldX + parent.getLeft(); 2210 final int fromY = lp.oldY + parent.getTop(); 2211 2212 final int dx = lp.x - lp.oldX; 2213 final int dy = lp.y - lp.oldY; 2214 2215 // Calculate the duration of the animation based on the object's distance 2216 final float dist = (float) Math.sqrt(dx*dx + dy*dy); 2217 final Resources res = getResources(); 2218 final float maxDist = (float) res.getInteger(R.integer.config_dropAnimMaxDist); 2219 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration); 2220 if (dist < maxDist) { 2221 duration *= mQuintEaseOutInterpolator.getInterpolation(dist / maxDist); 2222 } 2223 2224 if (mDropAnim != null) { 2225 mDropAnim.end(); 2226 } 2227 mDropAnim = new ValueAnimator(); 2228 mDropAnim.setInterpolator(mQuintEaseOutInterpolator); 2229 2230 // The view is invisible during the animation; we render it manually. 2231 mDropAnim.addListener(new AnimatorListenerAdapter() { 2232 public void onAnimationStart(Animator animation) { 2233 // Set this here so that we don't render it until the animation begins 2234 mDropView = view; 2235 } 2236 2237 public void onAnimationEnd(Animator animation) { 2238 if (mDropView != null) { 2239 mDropView.setVisibility(View.VISIBLE); 2240 mDropView = null; 2241 } 2242 } 2243 }); 2244 2245 mDropAnim.setDuration(duration); 2246 mDropAnim.setFloatValues(0.0f, 1.0f); 2247 mDropAnim.removeAllUpdateListeners(); 2248 mDropAnim.addUpdateListener(new AnimatorUpdateListener() { 2249 public void onAnimationUpdate(ValueAnimator animation) { 2250 final float percent = (Float) animation.getAnimatedValue(); 2251 // Invalidate the old position 2252 invalidate(mDropViewPos[0], mDropViewPos[1], 2253 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 2254 2255 mDropViewPos[0] = fromX + (int) (percent * dx + 0.5f); 2256 mDropViewPos[1] = fromY + (int) (percent * dy + 0.5f); 2257 invalidate(mDropViewPos[0], mDropViewPos[1], 2258 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 2259 } 2260 }); 2261 2262 mDropAnim.start(); 2263 } 2264 2265 /** 2266 * {@inheritDoc} 2267 */ 2268 public boolean acceptDrop(DragSource source, int x, int y, 2269 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 2270 2271 // If it's an external drop (e.g. from All Apps), check if it should be accepted 2272 if (source != this) { 2273 // Don't accept the drop if we're not over a screen at time of drop 2274 if (mDragTargetLayout == null || !mDragTargetLayout.getAcceptsDrops()) { 2275 return false; 2276 } 2277 2278 final CellLayout.CellInfo dragCellInfo = mDragInfo; 2279 final int spanX = dragCellInfo == null ? 1 : dragCellInfo.spanX; 2280 final int spanY = dragCellInfo == null ? 1 : dragCellInfo.spanY; 2281 2282 final View ignoreView = dragCellInfo == null ? null : dragCellInfo.cell; 2283 2284 // Don't accept the drop if there's no room for the item 2285 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 2286 mLauncher.showOutOfSpaceMessage(); 2287 return false; 2288 } 2289 } 2290 return true; 2291 } 2292 2293 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int originX, int originY) { 2294 mTargetCell = findNearestArea(originX, originY, 2295 1, 1, target, 2296 mTargetCell); 2297 2298 View v = target.getChildAt(mTargetCell[0], mTargetCell[1]); 2299 boolean hasntMoved = mDragInfo != null && (mDragInfo.cellX == mTargetCell[0] && 2300 mDragInfo.cellY == mTargetCell[1]); 2301 2302 if (v == null || hasntMoved) return false; 2303 2304 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2305 boolean willBecomeShortcut = 2306 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2307 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2308 2309 return (aboveShortcut && willBecomeShortcut); 2310 } 2311 2312 boolean createUserFolderIfNecessary(View newView, CellLayout target, int originX, 2313 int originY, boolean external) { 2314 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2315 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2316 2317 // First we find the cell nearest to point at which the item is dropped, without 2318 // any consideration to whether there is an item there. 2319 mTargetCell = findNearestArea(originX, originY, 2320 spanX, spanY, target, 2321 mTargetCell); 2322 2323 View v = target.getChildAt(mTargetCell[0], mTargetCell[1]); 2324 boolean hasntMoved = mDragInfo != null && (mDragInfo.cellX == mTargetCell[0] && 2325 mDragInfo.cellY == mTargetCell[1]); 2326 2327 if (v == null || hasntMoved) return false; 2328 2329 final int screen = (mTargetCell == null) ? 2330 mDragInfo.screen : indexOfChild(target); 2331 2332 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2333 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2334 2335 if (aboveShortcut && willBecomeShortcut) { 2336 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2337 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2338 // if the drag started here, we need to remove it from the workspace 2339 if (!external) { 2340 int fromScreen = mDragInfo.screen; 2341 CellLayout sourceLayout = (CellLayout) getChildAt(fromScreen); 2342 sourceLayout.removeView(newView); 2343 } 2344 2345 target.removeView(v); 2346 FolderIcon fi = mLauncher.addFolder(screen, mTargetCell[0], mTargetCell[1]); 2347 fi.addItem(destInfo); 2348 fi.addItem(sourceInfo); 2349 return true; 2350 } 2351 return false; 2352 } 2353 2354 public void onDrop(DragSource source, int x, int y, int xOffset, int yOffset, 2355 DragView dragView, Object dragInfo) { 2356 2357 mDragViewVisualCenter = getDragViewVisualCenter(x, y, xOffset, yOffset, dragView, 2358 mDragViewVisualCenter); 2359 2360 // We want the point to be mapped to the dragTarget. 2361 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2362 2363 // When you are in customization mode and drag to a particular screen, make that the 2364 // new current/default screen, so any subsequent taps add items to that screen 2365 if (!mLauncher.isAllAppsVisible()) { 2366 int dragTargetIndex = indexOfChild(mDragTargetLayout); 2367 if (mCurrentPage != dragTargetIndex && (mIsSmall || mIsInUnshrinkAnimation)) { 2368 scrollToNewPageWithoutMovingPages(dragTargetIndex); 2369 } 2370 } 2371 2372 if (source != this) { 2373 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2374 (int) mDragViewVisualCenter[1] }; 2375 if ((mIsSmall || mIsInUnshrinkAnimation) && !mLauncher.isAllAppsVisible()) { 2376 // When the workspace is shrunk and the drop comes from customize, don't actually 2377 // add the item to the screen -- customize will do this itself 2378 ((ItemInfo) dragInfo).dropPos = touchXY; 2379 return; 2380 } 2381 onDropExternal(touchXY, dragInfo, mDragTargetLayout, false, dragView); 2382 } else if (mDragInfo != null) { 2383 final View cell = mDragInfo.cell; 2384 CellLayout dropTargetLayout = mDragTargetLayout; 2385 2386 // Handle the case where the user drops when in the scroll area. 2387 // This is treated as a drop on the adjacent page. 2388 if (dropTargetLayout == null && mInScrollArea) { 2389 if (mPendingScrollDirection == DragController.SCROLL_LEFT) { 2390 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage - 1); 2391 } else if (mPendingScrollDirection == DragController.SCROLL_RIGHT) { 2392 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage + 1); 2393 } 2394 } 2395 2396 if (dropTargetLayout != null) { 2397 // Move internally 2398 final int screen = (mTargetCell == null) ? 2399 mDragInfo.screen : indexOfChild(dropTargetLayout); 2400 2401 // If the item being dropped is a shortcut and the nearest drop cell also contains 2402 // a shortcut, then create a folder with the two shortcuts. 2403 if (createUserFolderIfNecessary(cell, dropTargetLayout, 2404 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], false)) { 2405 return; 2406 } 2407 2408 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2409 // we need to find the nearest cell location that is vacant 2410 mTargetCell = findNearestVacantArea((int) mDragViewVisualCenter[0], 2411 (int) mDragViewVisualCenter[1], mDragInfo.spanX, mDragInfo.spanY, cell, 2412 dropTargetLayout, mTargetCell); 2413 2414 if (screen != mCurrentPage) { 2415 snapToPage(screen); 2416 } 2417 2418 if (mTargetCell != null) { 2419 if (screen != mDragInfo.screen) { 2420 // Reparent the view 2421 ((CellLayout) getChildAt(mDragInfo.screen)).removeView(cell); 2422 addInScreen(cell, screen, mTargetCell[0], mTargetCell[1], 2423 mDragInfo.spanX, mDragInfo.spanY); 2424 } 2425 2426 // update the item's position after drop 2427 final ItemInfo info = (ItemInfo) cell.getTag(); 2428 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2429 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 2430 lp.cellX = mTargetCell[0]; 2431 lp.cellY = mTargetCell[1]; 2432 cell.setId(LauncherModel.getCellLayoutChildId(-1, mDragInfo.screen, 2433 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2434 2435 if (cell instanceof LauncherAppWidgetHostView) { 2436 final CellLayout cellLayout = dropTargetLayout; 2437 // We post this call so that the widget has a chance to be placed 2438 // in its final location 2439 2440 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2441 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2442 if (pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2443 final Runnable resizeRunnable = new Runnable() { 2444 public void run() { 2445 DragLayer dragLayer = (DragLayer) 2446 mLauncher.findViewById(R.id.drag_layer); 2447 dragLayer.addResizeFrame(info, hostView, 2448 cellLayout); 2449 } 2450 }; 2451 post(new Runnable() { 2452 public void run() { 2453 if (!isPageMoving()) { 2454 resizeRunnable.run(); 2455 } else { 2456 mDelayedResizeRunnable = resizeRunnable; 2457 } 2458 } 2459 }); 2460 } 2461 } 2462 2463 LauncherModel.moveItemInDatabase(mLauncher, info, 2464 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2465 lp.cellX, lp.cellY); 2466 } 2467 } 2468 2469 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2470 2471 int loc[] = new int[2]; 2472 getViewLocationRelativeToSelf(dragView, loc); 2473 2474 // Prepare it to be animated into its new position 2475 // This must be called after the view has been re-parented 2476 setPositionForDropAnimation(dragView, loc[0], loc[1], parent, cell); 2477 boolean animateDrop = !mWasSpringLoadedOnDragExit; 2478 parent.onDropChild(cell, animateDrop); 2479 } 2480 } 2481 2482 private void getViewLocationRelativeToSelf(View v, int[] location) { 2483 getLocationOnScreen(location); 2484 int x = location[0]; 2485 int y = location[1]; 2486 2487 v.getLocationOnScreen(location); 2488 int vX = location[0]; 2489 int vY = location[1]; 2490 2491 location[0] = vX - x; 2492 location[1] = vY - y; 2493 } 2494 2495 public void onDragEnter(DragSource source, int x, int y, int xOffset, 2496 int yOffset, DragView dragView, Object dragInfo) { 2497 mDragTargetLayout = null; // Reset the drag state 2498 2499 if (!mIsSmall) { 2500 mDragTargetLayout = getCurrentDropLayout(); 2501 mDragTargetLayout.onDragEnter(); 2502 showOutlines(); 2503 } 2504 } 2505 2506 public DropTarget getDropTargetDelegate(DragSource source, int x, int y, 2507 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 2508 2509 if (mIsSmall || mIsInUnshrinkAnimation) { 2510 // If we're shrunken, don't let anyone drag on folders/etc that are on the mini-screens 2511 return null; 2512 } 2513 // We may need to delegate the drag to a child view. If a 1x1 item 2514 // would land in a cell occupied by a DragTarget (e.g. a Folder), 2515 // then drag events should be handled by that child. 2516 2517 ItemInfo item = (ItemInfo) dragInfo; 2518 CellLayout currentLayout = getCurrentDropLayout(); 2519 2520 int dragPointX, dragPointY; 2521 if (item.spanX == 1 && item.spanY == 1) { 2522 // For a 1x1, calculate the drop cell exactly as in onDragOver 2523 dragPointX = x - xOffset; 2524 dragPointY = y - yOffset; 2525 } else { 2526 // Otherwise, use the exact drag coordinates 2527 dragPointX = x; 2528 dragPointY = y; 2529 } 2530 dragPointX += mScrollX - currentLayout.getLeft(); 2531 dragPointY += mScrollY - currentLayout.getTop(); 2532 2533 // If we are dragging over a cell that contains a DropTarget that will 2534 // accept the drop, delegate to that DropTarget. 2535 final int[] cellXY = mTempCell; 2536 currentLayout.estimateDropCell(dragPointX, dragPointY, item.spanX, item.spanY, cellXY); 2537 View child = currentLayout.getChildAt(cellXY[0], cellXY[1]); 2538 if (child instanceof DropTarget) { 2539 DropTarget target = (DropTarget)child; 2540 if (target.acceptDrop(source, x, y, xOffset, yOffset, dragView, dragInfo)) { 2541 return target; 2542 } 2543 } 2544 return null; 2545 } 2546 2547 /** 2548 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 2549 * in the returned structure related to the widgets that match the drop (or a null list if it is 2550 * a shortcut drop). If the drop is not accepted then a null structure is returned. 2551 */ 2552 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 2553 final LauncherModel model = mLauncher.getModel(); 2554 final ClipDescription desc = event.getClipDescription(); 2555 final int mimeTypeCount = desc.getMimeTypeCount(); 2556 for (int i = 0; i < mimeTypeCount; ++i) { 2557 final String mimeType = desc.getMimeType(i); 2558 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 2559 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 2560 } else { 2561 final List<WidgetMimeTypeHandlerData> widgets = 2562 model.resolveWidgetsForMimeType(mContext, mimeType); 2563 if (widgets.size() > 0) { 2564 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 2565 } 2566 } 2567 } 2568 return null; 2569 } 2570 2571 /** 2572 * Global drag and drop handler 2573 */ 2574 @Override 2575 public boolean onDragEvent(DragEvent event) { 2576 final ClipDescription desc = event.getClipDescription(); 2577 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 2578 final int[] pos = new int[2]; 2579 layout.getLocationOnScreen(pos); 2580 // We need to offset the drag coordinates to layout coordinate space 2581 final int x = (int) event.getX() - pos[0]; 2582 final int y = (int) event.getY() - pos[1]; 2583 2584 switch (event.getAction()) { 2585 case DragEvent.ACTION_DRAG_STARTED: { 2586 // Validate this drag 2587 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2588 if (test != null) { 2589 boolean isShortcut = (test.second == null); 2590 if (isShortcut) { 2591 // Check if we have enough space on this screen to add a new shortcut 2592 if (!layout.findCellForSpan(pos, 1, 1)) { 2593 Toast.makeText(mContext, mContext.getString(R.string.out_of_space), 2594 Toast.LENGTH_SHORT).show(); 2595 return false; 2596 } 2597 } 2598 } else { 2599 // Show error message if we couldn't accept any of the items 2600 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 2601 Toast.LENGTH_SHORT).show(); 2602 return false; 2603 } 2604 2605 // Create the drag outline 2606 // We need to add extra padding to the bitmap to make room for the glow effect 2607 final Canvas canvas = new Canvas(); 2608 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2609 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 2610 2611 // Show the current page outlines to indicate that we can accept this drop 2612 showOutlines(); 2613 layout.setIsDragOccuring(true); 2614 layout.onDragEnter(); 2615 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2616 2617 return true; 2618 } 2619 case DragEvent.ACTION_DRAG_LOCATION: 2620 // Visualize the drop location 2621 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2622 return true; 2623 case DragEvent.ACTION_DROP: { 2624 // Try and add any shortcuts 2625 final LauncherModel model = mLauncher.getModel(); 2626 final ClipData data = event.getClipData(); 2627 2628 // We assume that the mime types are ordered in descending importance of 2629 // representation. So we enumerate the list of mime types and alert the 2630 // user if any widgets can handle the drop. Only the most preferred 2631 // representation will be handled. 2632 pos[0] = x; 2633 pos[1] = y; 2634 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2635 if (test != null) { 2636 final int index = test.first; 2637 final List<WidgetMimeTypeHandlerData> widgets = test.second; 2638 final boolean isShortcut = (widgets == null); 2639 final String mimeType = desc.getMimeType(index); 2640 if (isShortcut) { 2641 final Intent intent = data.getItemAt(index).getIntent(); 2642 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 2643 onDropExternal(new int[] { x, y }, info, layout, false); 2644 } else { 2645 if (widgets.size() == 1) { 2646 // If there is only one item, then go ahead and add and configure 2647 // that widget 2648 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 2649 final PendingAddWidgetInfo createInfo = 2650 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 2651 mLauncher.addAppWidgetFromDrop(createInfo, mCurrentPage, pos); 2652 } else { 2653 // Show the widget picker dialog if there is more than one widget 2654 // that can handle this data type 2655 final InstallWidgetReceiver.WidgetListAdapter adapter = 2656 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 2657 data, widgets, layout, mCurrentPage, pos); 2658 final AlertDialog.Builder builder = 2659 new AlertDialog.Builder(mContext); 2660 builder.setAdapter(adapter, adapter); 2661 builder.setCancelable(true); 2662 builder.setTitle(mContext.getString( 2663 R.string.external_drop_widget_pick_title)); 2664 builder.setIcon(R.drawable.ic_no_applications); 2665 builder.show(); 2666 } 2667 } 2668 } 2669 return true; 2670 } 2671 case DragEvent.ACTION_DRAG_ENDED: 2672 // Hide the page outlines after the drop 2673 layout.setIsDragOccuring(false); 2674 layout.onDragExit(); 2675 hideOutlines(); 2676 return true; 2677 } 2678 return super.onDragEvent(event); 2679 } 2680 2681 /* 2682 * 2683 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2684 * coordinate space. The argument xy is modified with the return result. 2685 * 2686 */ 2687 void mapPointFromSelfToChild(View v, float[] xy) { 2688 mapPointFromSelfToChild(v, xy, null); 2689 } 2690 2691 /* 2692 * 2693 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2694 * coordinate space. The argument xy is modified with the return result. 2695 * 2696 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2697 * computing it itself; we use this to avoid redundant matrix inversions in 2698 * findMatchingPageForDragOver 2699 * 2700 */ 2701 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2702 if (cachedInverseMatrix == null) { 2703 v.getMatrix().invert(mTempInverseMatrix); 2704 cachedInverseMatrix = mTempInverseMatrix; 2705 } 2706 xy[0] = xy[0] + mScrollX - v.getLeft(); 2707 xy[1] = xy[1] + mScrollY - v.getTop(); 2708 cachedInverseMatrix.mapPoints(xy); 2709 } 2710 2711 /* 2712 * 2713 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2714 * the parent View's coordinate space. The argument xy is modified with the return result. 2715 * 2716 */ 2717 void mapPointFromChildToSelf(View v, float[] xy) { 2718 v.getMatrix().mapPoints(xy); 2719 xy[0] -= (mScrollX - v.getLeft()); 2720 xy[1] -= (mScrollY - v.getTop()); 2721 } 2722 2723 static private float squaredDistance(float[] point1, float[] point2) { 2724 float distanceX = point1[0] - point2[0]; 2725 float distanceY = point2[1] - point2[1]; 2726 return distanceX * distanceX + distanceY * distanceY; 2727 } 2728 2729 /* 2730 * 2731 * Returns true if the passed CellLayout cl overlaps with dragView 2732 * 2733 */ 2734 boolean overlaps(CellLayout cl, DragView dragView, 2735 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2736 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2737 final float[] draggedItemTopLeft = mTempDragCoordinates; 2738 draggedItemTopLeft[0] = dragViewX; 2739 draggedItemTopLeft[1] = dragViewY; 2740 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2741 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2742 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2743 2744 // Transform the dragged item's top left coordinates 2745 // to the CellLayout's local coordinates 2746 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2747 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2748 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2749 2750 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2751 // Transform the dragged item's bottom right coordinates 2752 // to the CellLayout's local coordinates 2753 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2754 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2755 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2756 2757 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2758 float overlap = (overlapRegionRight - overlapRegionLeft) * 2759 (overlapRegionBottom - overlapRegionTop); 2760 if (overlap > 0) { 2761 return true; 2762 } 2763 } 2764 } 2765 return false; 2766 } 2767 2768 /* 2769 * 2770 * This method returns the CellLayout that is currently being dragged to. In order to drag 2771 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2772 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2773 * 2774 * Return null if no CellLayout is currently being dragged over 2775 * 2776 */ 2777 private CellLayout findMatchingPageForDragOver( 2778 DragView dragView, int originX, int originY, int offsetX, int offsetY) { 2779 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2780 // with the item being dragged and then choose the one that's closest to the touch point 2781 final int screenCount = getChildCount(); 2782 CellLayout bestMatchingScreen = null; 2783 float smallestDistSoFar = Float.MAX_VALUE; 2784 2785 for (int i = 0; i < screenCount; i++) { 2786 CellLayout cl = (CellLayout)getChildAt(i); 2787 2788 final float[] touchXy = mTempTouchCoordinates; 2789 touchXy[0] = originX + offsetX; 2790 touchXy[1] = originY + offsetY; 2791 2792 // Transform the touch coordinates to the CellLayout's local coordinates 2793 // If the touch point is within the bounds of the cell layout, we can return immediately 2794 cl.getMatrix().invert(mTempInverseMatrix); 2795 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2796 2797 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2798 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2799 return cl; 2800 } 2801 2802 if (overlaps(cl, dragView, originX, originY, mTempInverseMatrix)) { 2803 // Get the center of the cell layout in screen coordinates 2804 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2805 cellLayoutCenter[0] = cl.getWidth()/2; 2806 cellLayoutCenter[1] = cl.getHeight()/2; 2807 mapPointFromChildToSelf(cl, cellLayoutCenter); 2808 2809 touchXy[0] = originX + offsetX; 2810 touchXy[1] = originY + offsetY; 2811 2812 // Calculate the distance between the center of the CellLayout 2813 // and the touch point 2814 float dist = squaredDistance(touchXy, cellLayoutCenter); 2815 2816 if (dist < smallestDistSoFar) { 2817 smallestDistSoFar = dist; 2818 bestMatchingScreen = cl; 2819 } 2820 } 2821 } 2822 return bestMatchingScreen; 2823 } 2824 2825 // This is used to compute the visual center of the dragView. This point is then 2826 // used to visualize drop locations and determine where to drop an item. The idea is that 2827 // the visual center represents the user's interpretation of where the item is, and hence 2828 // is the appropriate point to use when determining drop location. 2829 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2830 DragView dragView, float[] recycle) { 2831 float res[]; 2832 if (recycle == null) { 2833 res = new float[2]; 2834 } else { 2835 res = recycle; 2836 } 2837 2838 // First off, the drag view has been shifted in a way that is not represented in the 2839 // x and y values or the x/yOffsets. Here we account for that shift. 2840 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2841 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2842 2843 // These represent the visual top and left of drag view if a dragRect was provided. 2844 // If a dragRect was not provided, then they correspond to the actual view left and 2845 // top, as the dragRect is in that case taken to be the entire dragView. 2846 // R.dimen.dragViewOffsetY. 2847 int left = x - xOffset; 2848 int top = y - yOffset; 2849 2850 // In order to find the visual center, we shift by half the dragRect 2851 res[0] = left + dragView.getDragRegion().width() / 2; 2852 res[1] = top + dragView.getDragRegion().height() / 2; 2853 2854 return res; 2855 } 2856 2857 public void onDragOver(DragSource source, int x, int y, int xOffset, int yOffset, 2858 DragView dragView, Object dragInfo) { 2859 // When touch is inside the scroll area, skip dragOver actions for the current screen 2860 if (!mInScrollArea) { 2861 CellLayout layout; 2862 int left = x - xOffset; 2863 int top = y - yOffset; 2864 2865 mDragViewVisualCenter = getDragViewVisualCenter(x, y, xOffset, yOffset, dragView, 2866 mDragViewVisualCenter); 2867 2868 boolean shrunken = mIsSmall || mIsInUnshrinkAnimation; 2869 if (shrunken) { 2870 mLastDragView = dragView; 2871 mLastDragOriginX = left; 2872 mLastDragOriginY = top; 2873 mLastDragXOffset = xOffset; 2874 mLastDragYOffset = yOffset; 2875 layout = findMatchingPageForDragOver(dragView, left, top, xOffset, yOffset); 2876 2877 if (layout != mDragTargetLayout) { 2878 if (mDragTargetLayout != null) { 2879 mDragTargetLayout.setIsDragOverlapping(false); 2880 mSpringLoadedDragController.onDragExit(); 2881 } 2882 mDragTargetLayout = layout; 2883 2884 // Workaround the fact that we don't actually want spring-loaded mode in phone 2885 // UI yet. 2886 if (LauncherApplication.isScreenXLarge()) { 2887 // In spring-loaded mode, we still want the user to be able to hover over a 2888 // full screen (which is traditionally set to not accept drops) if they want 2889 // to get to pages beyond the screen that is full. 2890 boolean allowDragOver = (mDragTargetLayout != null) && 2891 (mDragTargetLayout.getAcceptsDrops() || 2892 (mShrinkState == ShrinkState.SPRING_LOADED)); 2893 if (allowDragOver) { 2894 mDragTargetLayout.setIsDragOverlapping(true); 2895 mSpringLoadedDragController.onDragEnter( 2896 mDragTargetLayout, mShrinkState == ShrinkState.SPRING_LOADED); 2897 } 2898 } 2899 } 2900 } else { 2901 layout = getCurrentDropLayout(); 2902 if (layout != mDragTargetLayout) { 2903 if (mDragTargetLayout != null) { 2904 mDragTargetLayout.onDragExit(); 2905 } 2906 layout.onDragEnter(); 2907 mDragTargetLayout = layout; 2908 } 2909 } 2910 if (!shrunken || mShrinkState == ShrinkState.SPRING_LOADED) { 2911 layout = getCurrentDropLayout(); 2912 2913 final ItemInfo item = (ItemInfo)dragInfo; 2914 if (dragInfo instanceof LauncherAppWidgetInfo) { 2915 LauncherAppWidgetInfo widgetInfo = (LauncherAppWidgetInfo)dragInfo; 2916 2917 if (widgetInfo.spanX == -1) { 2918 // Calculate the grid spans needed to fit this widget 2919 int[] spans = layout.rectToCell( 2920 widgetInfo.minWidth, widgetInfo.minHeight, null); 2921 item.spanX = spans[0]; 2922 item.spanY = spans[1]; 2923 } 2924 } 2925 2926 if (mDragTargetLayout != null) { 2927 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2928 // We want the point to be mapped to the dragTarget. 2929 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2930 ItemInfo info = (ItemInfo) dragInfo; 2931 2932 if (!willCreateUserFolder(info, mDragTargetLayout, 2933 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1])) { 2934 mIsDraggingOverIcon = false; 2935 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2936 (int) mDragViewVisualCenter[0], 2937 (int) mDragViewVisualCenter[1], 2938 item.spanX, item.spanY); 2939 } else if (!mIsDraggingOverIcon) { 2940 mIsDraggingOverIcon = true; 2941 mDragTargetLayout.clearDragOutlines(); 2942 } 2943 } 2944 } 2945 } 2946 } 2947 2948 private void doDragExit() { 2949 mWasSpringLoadedOnDragExit = mShrinkState == ShrinkState.SPRING_LOADED; 2950 if (mDragTargetLayout != null) { 2951 mDragTargetLayout.onDragExit(); 2952 } 2953 if (!mIsPageMoving) { 2954 hideOutlines(); 2955 } 2956 if (mShrinkState == ShrinkState.SPRING_LOADED) { 2957 mLauncher.exitSpringLoadedDragMode(); 2958 } 2959 clearAllHovers(); 2960 } 2961 2962 public void onDragExit(DragSource source, int x, int y, int xOffset, 2963 int yOffset, DragView dragView, Object dragInfo) { 2964 doDragExit(); 2965 } 2966 2967 @Override 2968 public void getHitRect(Rect outRect) { 2969 // We want the workspace to have the whole area of the display (it will find the correct 2970 // cell layout to drop to in the existing drag/drop logic. 2971 final Display d = mLauncher.getWindowManager().getDefaultDisplay(); 2972 outRect.set(0, 0, d.getWidth(), d.getHeight()); 2973 } 2974 2975 /** 2976 * Add the item specified by dragInfo to the given layout. 2977 * @return true if successful 2978 */ 2979 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2980 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2981 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2982 return true; 2983 } 2984 mLauncher.showOutOfSpaceMessage(); 2985 return false; 2986 } 2987 2988 private void onDropExternal(int[] touchXY, Object dragInfo, 2989 CellLayout cellLayout, boolean insertAtFirst) { 2990 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 2991 } 2992 2993 /** 2994 * Drop an item that didn't originate on one of the workspace screens. 2995 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2996 * come from another app altogether. 2997 * 2998 * NOTE: This can also be called when we are outside of a drag event, when we want 2999 * to add an item to one of the workspace screens. 3000 */ 3001 private void onDropExternal(int[] touchXY, Object dragInfo, 3002 CellLayout cellLayout, boolean insertAtFirst, DragView dragView) { 3003 int screen = indexOfChild(cellLayout); 3004 if (dragInfo instanceof PendingAddItemInfo) { 3005 PendingAddItemInfo info = (PendingAddItemInfo) dragInfo; 3006 // When dragging and dropping from customization tray, we deal with creating 3007 // widgets/shortcuts/folders in a slightly different way 3008 switch (info.itemType) { 3009 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 3010 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) info, screen, touchXY); 3011 break; 3012 case LauncherSettings.Favorites.ITEM_TYPE_LIVE_FOLDER: 3013 mLauncher.addLiveFolderFromDrop(info.componentName, screen, touchXY); 3014 break; 3015 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3016 mLauncher.processShortcutFromDrop(info.componentName, screen, touchXY); 3017 break; 3018 default: 3019 throw new IllegalStateException("Unknown item type: " + info.itemType); 3020 } 3021 cellLayout.onDragExit(); 3022 } else { 3023 // This is for other drag/drop cases, like dragging from All Apps 3024 ItemInfo info = (ItemInfo) dragInfo; 3025 View view = null; 3026 3027 switch (info.itemType) { 3028 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 3029 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3030 if (info.container == NO_ID && info instanceof ApplicationInfo) { 3031 // Came from all apps -- make a copy 3032 info = new ShortcutInfo((ApplicationInfo) info); 3033 } 3034 view = mLauncher.createShortcut(R.layout.application, cellLayout, 3035 (ShortcutInfo) info); 3036 break; 3037 case LauncherSettings.Favorites.ITEM_TYPE_USER_FOLDER: 3038 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, 3039 cellLayout, (UserFolderInfo) info, mIconCache); 3040 break; 3041 default: 3042 throw new IllegalStateException("Unknown item type: " + info.itemType); 3043 } 3044 3045 // If the item being dropped is a shortcut and the nearest drop cell also contains 3046 // a shortcut, then create a folder with the two shortcuts. 3047 if (touchXY != null && createUserFolderIfNecessary(view, cellLayout, touchXY[0], 3048 touchXY[1], true)) { 3049 return; 3050 } 3051 3052 mTargetCell = new int[2]; 3053 if (touchXY != null) { 3054 // when dragging and dropping, just find the closest free spot 3055 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], 1, 1, null, cellLayout, 3056 mTargetCell); 3057 } else { 3058 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3059 } 3060 addInScreen(view, indexOfChild(cellLayout), mTargetCell[0], 3061 mTargetCell[1], info.spanX, info.spanY, insertAtFirst); 3062 boolean animateDrop = !mWasSpringLoadedOnDragExit; 3063 cellLayout.onDropChild(view, animateDrop); 3064 cellLayout.animateDrop(); 3065 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 3066 cellLayout.getChildrenLayout().measureChild(view); 3067 3068 if (dragView != null) { 3069 // we have the visual center of the drag view, we need to find the actual 3070 // left and top of the dragView. 3071 int loc[] = new int[2]; 3072 getViewLocationRelativeToSelf(dragView, loc); 3073 setPositionForDropAnimation(dragView, loc[0], loc[1], cellLayout, view); 3074 } 3075 3076 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 3077 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 3078 lp.cellX, lp.cellY); 3079 } 3080 } 3081 3082 /** 3083 * Return the current {@link CellLayout}, correctly picking the destination 3084 * screen while a scroll is in progress. 3085 */ 3086 public CellLayout getCurrentDropLayout() { 3087 return (CellLayout) getChildAt(mNextPage == INVALID_PAGE ? mCurrentPage : mNextPage); 3088 } 3089 3090 /** 3091 * Return the current CellInfo describing our current drag; this method exists 3092 * so that Launcher can sync this object with the correct info when the activity is created/ 3093 * destroyed 3094 * 3095 */ 3096 public CellLayout.CellInfo getDragInfo() { 3097 return mDragInfo; 3098 } 3099 3100 /** 3101 * Calculate the nearest cell where the given object would be dropped. 3102 * 3103 * pixelX and pixelY should be in the coordinate system of layout 3104 */ 3105 private int[] findNearestVacantArea(int pixelX, int pixelY, 3106 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 3107 return layout.findNearestVacantArea( 3108 pixelX, pixelY, spanX, spanY, ignoreView, recycle); 3109 } 3110 3111 /** 3112 * Calculate the nearest cell where the given object would be dropped. 3113 * 3114 * pixelX and pixelY should be in the coordinate system of layout 3115 */ 3116 private int[] findNearestArea(int pixelX, int pixelY, 3117 int spanX, int spanY, CellLayout layout, int[] recycle) { 3118 return layout.findNearestArea( 3119 pixelX, pixelY, spanX, spanY, recycle); 3120 } 3121 3122 void setLauncher(Launcher launcher) { 3123 mLauncher = launcher; 3124 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3125 3126 mCustomizationDrawer = mLauncher.findViewById(R.id.customization_drawer); 3127 if (mCustomizationDrawer != null) { 3128 mCustomizationDrawerContent = 3129 mCustomizationDrawer.findViewById(com.android.internal.R.id.tabcontent); 3130 } 3131 } 3132 3133 public void setDragController(DragController dragController) { 3134 mDragController = dragController; 3135 } 3136 3137 /** 3138 * Called at the end of a drag which originated on the workspace. 3139 */ 3140 public void onDropCompleted(View target, Object dragInfo, boolean success) { 3141 if (success) { 3142 if (target != this && mDragInfo != null) { 3143 final CellLayout cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3144 cellLayout.removeView(mDragInfo.cell); 3145 if (mDragInfo.cell instanceof DropTarget) { 3146 mDragController.removeDropTarget((DropTarget)mDragInfo.cell); 3147 } 3148 // final Object tag = mDragInfo.cell.getTag(); 3149 } 3150 } else if (mDragInfo != null) { 3151 // NOTE: When 'success' is true, onDragExit is called by the DragController before 3152 // calling onDropCompleted(). We call it ourselves here, but maybe this should be 3153 // moved into DragController.cancelDrag(). 3154 doDragExit(); 3155 ((CellLayout) getChildAt(mDragInfo.screen)).onDropChild(mDragInfo.cell, false); 3156 } 3157 mLauncher.unlockScreenOrientation(); 3158 mDragOutline = null; 3159 mDragInfo = null; 3160 } 3161 3162 @Override 3163 public void onDragViewVisible() { 3164 ((View) mDragInfo.cell).setVisibility(View.GONE); 3165 } 3166 3167 public boolean isDropEnabled() { 3168 return true; 3169 } 3170 3171 @Override 3172 protected void onRestoreInstanceState(Parcelable state) { 3173 super.onRestoreInstanceState(state); 3174 Launcher.setScreen(mCurrentPage); 3175 } 3176 3177 @Override 3178 public void scrollLeft() { 3179 if (!mIsSmall && !mIsInUnshrinkAnimation) { 3180 super.scrollLeft(); 3181 } 3182 } 3183 3184 @Override 3185 public void scrollRight() { 3186 if (!mIsSmall && !mIsInUnshrinkAnimation) { 3187 super.scrollRight(); 3188 } 3189 } 3190 3191 @Override 3192 public void onEnterScrollArea(int direction) { 3193 if (!mIsSmall && !mIsInUnshrinkAnimation) { 3194 mInScrollArea = true; 3195 mPendingScrollDirection = direction; 3196 3197 final int page = mCurrentPage + (direction == DragController.SCROLL_LEFT ? -1 : 1); 3198 final CellLayout layout = (CellLayout) getChildAt(page); 3199 3200 if (layout != null) { 3201 layout.setIsDragOverlapping(true); 3202 3203 if (mDragTargetLayout != null) { 3204 mDragTargetLayout.onDragExit(); 3205 mDragTargetLayout = null; 3206 } 3207 // In portrait, need to redraw the edge glow when entering the scroll area 3208 if (getHeight() > getWidth()) { 3209 invalidate(); 3210 } 3211 } 3212 } 3213 } 3214 3215 private void clearAllHovers() { 3216 final int childCount = getChildCount(); 3217 for (int i = 0; i < childCount; i++) { 3218 ((CellLayout) getChildAt(i)).setIsDragOverlapping(false); 3219 } 3220 mSpringLoadedDragController.onDragExit(); 3221 3222 // In portrait, workspace is responsible for drawing the edge glow on adjacent pages, 3223 // so we need to redraw the workspace when this may have changed. 3224 if (getHeight() > getWidth()) { 3225 invalidate(); 3226 } 3227 } 3228 3229 @Override 3230 public void onExitScrollArea() { 3231 if (mInScrollArea) { 3232 mInScrollArea = false; 3233 mPendingScrollDirection = DragController.SCROLL_NONE; 3234 clearAllHovers(); 3235 } 3236 } 3237 3238 public Folder getFolderForTag(Object tag) { 3239 final int screenCount = getChildCount(); 3240 for (int screen = 0; screen < screenCount; screen++) { 3241 ViewGroup currentScreen = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 3242 int count = currentScreen.getChildCount(); 3243 for (int i = 0; i < count; i++) { 3244 View child = currentScreen.getChildAt(i); 3245 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 3246 if (lp.cellHSpan == 4 && lp.cellVSpan == 4 && child instanceof Folder) { 3247 Folder f = (Folder) child; 3248 if (f.getInfo() == tag && f.getInfo().opened) { 3249 return f; 3250 } 3251 } 3252 } 3253 } 3254 return null; 3255 } 3256 3257 public View getViewForTag(Object tag) { 3258 int screenCount = getChildCount(); 3259 for (int screen = 0; screen < screenCount; screen++) { 3260 ViewGroup currentScreen = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 3261 int count = currentScreen.getChildCount(); 3262 for (int i = 0; i < count; i++) { 3263 View child = currentScreen.getChildAt(i); 3264 if (child.getTag() == tag) { 3265 return child; 3266 } 3267 } 3268 } 3269 return null; 3270 } 3271 3272 void clearDropTargets() { 3273 final int screenCount = getChildCount(); 3274 3275 for (int i = 0; i < screenCount; i++) { 3276 final CellLayout layoutParent = (CellLayout) getChildAt(i); 3277 final ViewGroup layout = layoutParent.getChildrenLayout(); 3278 int childCount = layout.getChildCount(); 3279 for (int j = 0; j < childCount; j++) { 3280 View v = layout.getChildAt(j); 3281 if (v instanceof DropTarget) { 3282 mDragController.removeDropTarget((DropTarget) v); 3283 } 3284 } 3285 } 3286 } 3287 3288 void removeItems(final ArrayList<ApplicationInfo> apps) { 3289 final int screenCount = getChildCount(); 3290 final PackageManager manager = getContext().getPackageManager(); 3291 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3292 3293 final HashSet<String> packageNames = new HashSet<String>(); 3294 final int appCount = apps.size(); 3295 for (int i = 0; i < appCount; i++) { 3296 packageNames.add(apps.get(i).componentName.getPackageName()); 3297 } 3298 3299 for (int i = 0; i < screenCount; i++) { 3300 final CellLayout layoutParent = (CellLayout) getChildAt(i); 3301 final ViewGroup layout = layoutParent.getChildrenLayout(); 3302 3303 // Avoid ANRs by treating each screen separately 3304 post(new Runnable() { 3305 public void run() { 3306 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3307 childrenToRemove.clear(); 3308 3309 int childCount = layout.getChildCount(); 3310 for (int j = 0; j < childCount; j++) { 3311 final View view = layout.getChildAt(j); 3312 Object tag = view.getTag(); 3313 3314 if (tag instanceof ShortcutInfo) { 3315 final ShortcutInfo info = (ShortcutInfo) tag; 3316 final Intent intent = info.intent; 3317 final ComponentName name = intent.getComponent(); 3318 3319 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3320 for (String packageName: packageNames) { 3321 if (packageName.equals(name.getPackageName())) { 3322 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3323 childrenToRemove.add(view); 3324 } 3325 } 3326 } 3327 } else if (tag instanceof UserFolderInfo) { 3328 final UserFolderInfo info = (UserFolderInfo) tag; 3329 final ArrayList<ShortcutInfo> contents = info.contents; 3330 final ArrayList<ShortcutInfo> toRemove = new ArrayList<ShortcutInfo>(1); 3331 final int contentsCount = contents.size(); 3332 boolean removedFromFolder = false; 3333 3334 for (int k = 0; k < contentsCount; k++) { 3335 final ShortcutInfo appInfo = contents.get(k); 3336 final Intent intent = appInfo.intent; 3337 final ComponentName name = intent.getComponent(); 3338 3339 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3340 for (String packageName: packageNames) { 3341 if (packageName.equals(name.getPackageName())) { 3342 toRemove.add(appInfo); 3343 LauncherModel.deleteItemFromDatabase(mLauncher, appInfo); 3344 removedFromFolder = true; 3345 } 3346 } 3347 } 3348 } 3349 3350 contents.removeAll(toRemove); 3351 if (removedFromFolder) { 3352 final Folder folder = getOpenFolder(); 3353 if (folder != null) 3354 folder.notifyDataSetChanged(); 3355 } 3356 } else if (tag instanceof LiveFolderInfo) { 3357 final LiveFolderInfo info = (LiveFolderInfo) tag; 3358 final Uri uri = info.uri; 3359 final ProviderInfo providerInfo = manager.resolveContentProvider( 3360 uri.getAuthority(), 0); 3361 3362 if (providerInfo != null) { 3363 for (String packageName: packageNames) { 3364 if (packageName.equals(providerInfo.packageName)) { 3365 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3366 childrenToRemove.add(view); 3367 } 3368 } 3369 } 3370 } else if (tag instanceof LauncherAppWidgetInfo) { 3371 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3372 final AppWidgetProviderInfo provider = 3373 widgets.getAppWidgetInfo(info.appWidgetId); 3374 if (provider != null) { 3375 for (String packageName: packageNames) { 3376 if (packageName.equals(provider.provider.getPackageName())) { 3377 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3378 childrenToRemove.add(view); 3379 } 3380 } 3381 } 3382 } 3383 } 3384 3385 childCount = childrenToRemove.size(); 3386 for (int j = 0; j < childCount; j++) { 3387 View child = childrenToRemove.get(j); 3388 // Note: We can not remove the view directly from CellLayoutChildren as this 3389 // does not re-mark the spaces as unoccupied. 3390 layoutParent.removeViewInLayout(child); 3391 if (child instanceof DropTarget) { 3392 mDragController.removeDropTarget((DropTarget)child); 3393 } 3394 } 3395 3396 if (childCount > 0) { 3397 layout.requestLayout(); 3398 layout.invalidate(); 3399 } 3400 } 3401 }); 3402 } 3403 } 3404 3405 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3406 final int screenCount = getChildCount(); 3407 for (int i = 0; i < screenCount; i++) { 3408 final ViewGroup layout = ((CellLayout) getChildAt(i)).getChildrenLayout(); 3409 int childCount = layout.getChildCount(); 3410 for (int j = 0; j < childCount; j++) { 3411 final View view = layout.getChildAt(j); 3412 Object tag = view.getTag(); 3413 if (tag instanceof ShortcutInfo) { 3414 ShortcutInfo info = (ShortcutInfo)tag; 3415 // We need to check for ACTION_MAIN otherwise getComponent() might 3416 // return null for some shortcuts (for instance, for shortcuts to 3417 // web pages.) 3418 final Intent intent = info.intent; 3419 final ComponentName name = intent.getComponent(); 3420 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3421 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3422 final int appCount = apps.size(); 3423 for (int k = 0; k < appCount; k++) { 3424 ApplicationInfo app = apps.get(k); 3425 if (app.componentName.equals(name)) { 3426 info.setIcon(mIconCache.getIcon(info.intent)); 3427 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 3428 new FastBitmapDrawable(info.getIcon(mIconCache)), 3429 null, null); 3430 } 3431 } 3432 } 3433 } 3434 } 3435 } 3436 } 3437 3438 void moveToDefaultScreen(boolean animate) { 3439 if (mIsSmall || mIsInUnshrinkAnimation) { 3440 mLauncher.showWorkspace(animate, (CellLayout)getChildAt(mDefaultPage)); 3441 } else if (animate) { 3442 snapToPage(mDefaultPage); 3443 } else { 3444 setCurrentPage(mDefaultPage); 3445 } 3446 getChildAt(mDefaultPage).requestFocus(); 3447 } 3448 3449 void setIndicators(Drawable previous, Drawable next) { 3450 mPreviousIndicator = previous; 3451 mNextIndicator = next; 3452 previous.setLevel(mCurrentPage); 3453 next.setLevel(mCurrentPage); 3454 } 3455 3456 @Override 3457 public void syncPages() { 3458 } 3459 3460 @Override 3461 public void syncPageItems(int page) { 3462 } 3463 3464} 3465