Workspace.java revision 76fc085d28178a5d4fb3787ede956281a2cc3179
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.Animator.AnimatorListener; 25import android.animation.AnimatorListenerAdapter; 26import android.animation.AnimatorSet; 27import android.animation.ObjectAnimator; 28import android.animation.TimeInterpolator; 29import android.animation.ValueAnimator; 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.res.Resources; 42import android.content.res.TypedArray; 43import android.graphics.Bitmap; 44import android.graphics.Camera; 45import android.graphics.Canvas; 46import android.graphics.Matrix; 47import android.graphics.Paint; 48import android.graphics.Point; 49import android.graphics.Rect; 50import android.graphics.RectF; 51import android.graphics.Region.Op; 52import android.graphics.drawable.Drawable; 53import android.os.IBinder; 54import android.os.Parcelable; 55import android.util.AttributeSet; 56import android.util.DisplayMetrics; 57import android.util.Log; 58import android.util.Pair; 59import android.view.Display; 60import android.view.DragEvent; 61import android.view.MotionEvent; 62import android.view.View; 63import android.view.ViewGroup; 64import android.view.animation.DecelerateInterpolator; 65import android.widget.TextView; 66import android.widget.Toast; 67 68import com.android.launcher.R; 69import com.android.launcher2.FolderIcon.FolderRingAnimator; 70import com.android.launcher2.InstallWidgetReceiver.WidgetMimeTypeHandlerData; 71 72/** 73 * The workspace is a wide area with a wallpaper and a finite number of pages. 74 * Each page contains a number of icons, folders or widgets the user can 75 * interact with. A workspace is meant to be used with a fixed width only. 76 */ 77public class Workspace extends SmoothPagedView 78 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 79 View.OnClickListener { 80 @SuppressWarnings({"UnusedDeclaration"}) 81 private static final String TAG = "Launcher.Workspace"; 82 83 // Y rotation to apply to the workspace screens 84 private static final float WORKSPACE_ROTATION = 12.5f; 85 86 // These are extra scale factors to apply to the mini home screens 87 // so as to achieve the desired transform 88 private static final float EXTRA_SCALE_FACTOR_0 = 0.972f; 89 private static final float EXTRA_SCALE_FACTOR_1 = 1.0f; 90 private static final float EXTRA_SCALE_FACTOR_2 = 1.10f; 91 92 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 93 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 94 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 95 96 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 97 private static final int BACKGROUND_FADE_IN_DURATION = 350; 98 99 // These animators are used to fade the children's outlines 100 private ObjectAnimator mChildrenOutlineFadeInAnimation; 101 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 102 private float mChildrenOutlineAlpha = 0; 103 104 // These properties refer to the background protection gradient used for AllApps and Customize 105 private ValueAnimator mBackgroundFadeInAnimation; 106 private ValueAnimator mBackgroundFadeOutAnimation; 107 private Drawable mBackground; 108 boolean mDrawBackground = true; 109 private float mBackgroundAlpha = 0; 110 private float mOverScrollMaxBackgroundAlpha = 0.0f; 111 private int mOverScrollPageIndex = -1; 112 113 114 115 private final WallpaperManager mWallpaperManager; 116 private IBinder mWindowToken; 117 118 private int mDefaultPage; 119 120 private boolean mIsDragInProcess = false; 121 private boolean mIsDraggingOverIcon = false; 122 123 /** 124 * CellInfo for the cell that is currently being dragged 125 */ 126 private CellLayout.CellInfo mDragInfo; 127 128 /** 129 * Target drop area calculated during last acceptDrop call. 130 */ 131 private int[] mTargetCell = new int[2]; 132 133 /** 134 * The CellLayout that is currently being dragged over 135 */ 136 private CellLayout mDragTargetLayout = null; 137 138 private Launcher mLauncher; 139 private IconCache mIconCache; 140 private DragController mDragController; 141 142 // These are temporary variables to prevent having to allocate a new object just to 143 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 144 private int[] mTempCell = new int[2]; 145 private int[] mTempEstimate = new int[2]; 146 private float[] mDragViewVisualCenter = new float[2]; 147 private float[] mTempDragCoordinates = new float[2]; 148 private float[] mTempTouchCoordinates = new float[2]; 149 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 150 private float[] mTempDragBottomRightCoordinates = new float[2]; 151 private float[] mTempFloatTuple = new float[2]; 152 private Matrix mTempInverseMatrix = new Matrix(); 153 private int[] mTempLocation = new int[2]; 154 155 private SpringLoadedDragController mSpringLoadedDragController; 156 private float mSpringLoadedShrinkFactor; 157 158 private static final int DEFAULT_CELL_COUNT_X = 4; 159 private static final int DEFAULT_CELL_COUNT_Y = 4; 160 161 private Drawable mPreviousIndicator; 162 private Drawable mNextIndicator; 163 164 // State variable that indicates whether the pages are small (ie when you're 165 // in all apps or customize mode) 166 private boolean mIsSmall = false; 167 private boolean mIsInUnshrinkAnimation = false; 168 private AnimatorListener mShrinkAnimationListener; 169 private AnimatorListener mUnshrinkAnimationListener; 170 enum ShrinkState { SPRING_LOADED, MIDDLE, BOTTOM_HIDDEN, BOTTOM_VISIBLE }; 171 private ShrinkState mShrinkState; 172 private boolean mWaitingToShrink = false; 173 private ShrinkState mWaitingToShrinkState; 174 private AnimatorSet mAnimator; 175 176 /** Is the user is dragging an item near the edge of a page? */ 177 private boolean mInScrollArea = false; 178 179 /** If mInScrollArea is true, the direction of the scroll. */ 180 private int mPendingScrollDirection = DragController.SCROLL_NONE; 181 182 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 183 private Bitmap mDragOutline = null; 184 private final Rect mTempRect = new Rect(); 185 private final int[] mTempXY = new int[2]; 186 187 private ValueAnimator mDropAnim = null; 188 private TimeInterpolator mQuintEaseOutInterpolator = new DecelerateInterpolator(2.5f); 189 private View mDropView = null; 190 private int[] mDropViewPos = new int[] { -1, -1 }; 191 192 // Paint used to draw external drop outline 193 private final Paint mExternalDragOutlinePaint = new Paint(); 194 195 // Camera and Matrix used to determine the final position of a neighboring CellLayout 196 private final Matrix mMatrix = new Matrix(); 197 private final Camera mCamera = new Camera(); 198 private final float mTempFloat2[] = new float[2]; 199 200 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 201 int mWallpaperWidth; 202 int mWallpaperHeight; 203 WallpaperOffsetInterpolator mWallpaperOffset; 204 boolean mUpdateWallpaperOffsetImmediately = false; 205 boolean mSyncWallpaperOffsetWithScroll = true; 206 private Runnable mDelayedResizeRunnable; 207 208 // info about the last drag 209 private DragView mLastDragView; 210 private int mLastDragOriginX; 211 private int mLastDragOriginY; 212 private int mLastDragXOffset; 213 private int mLastDragYOffset; 214 215 private ArrayList<FolderRingAnimator> mFolderOuterRings = new ArrayList<FolderRingAnimator>(); 216 217 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 218 private static final int FOLDER_CREATION_TIMEOUT = 250; 219 private final Alarm mFolderCreationAlarm = new Alarm(); 220 private FolderRingAnimator mDragFolderRingAnimator = null; 221 private View mLastDragOverView = null; 222 private boolean mCreateUserFolderOnDrop = false; 223 private int mCellWidth = -1; 224 private int mCellHeight = -1; 225 226 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 227 private float mXDown; 228 private float mYDown; 229 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 230 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 231 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 232 233 /** 234 * Used to inflate the Workspace from XML. 235 * 236 * @param context The application's context. 237 * @param attrs The attributes set containing the Workspace's customization values. 238 */ 239 public Workspace(Context context, AttributeSet attrs) { 240 this(context, attrs, 0); 241 } 242 243 /** 244 * Used to inflate the Workspace from XML. 245 * 246 * @param context The application's context. 247 * @param attrs The attributes set containing the Workspace's customization values. 248 * @param defStyle Unused. 249 */ 250 public Workspace(Context context, AttributeSet attrs, int defStyle) { 251 super(context, attrs, defStyle); 252 mContentIsRefreshable = false; 253 254 // With workspace, data is available straight from the get-go 255 setDataIsReady(); 256 257 if (!LauncherApplication.isScreenLarge()) { 258 mFadeInAdjacentScreens = false; 259 } 260 261 mWallpaperManager = WallpaperManager.getInstance(context); 262 263 int cellCountX = DEFAULT_CELL_COUNT_X; 264 int cellCountY = DEFAULT_CELL_COUNT_Y; 265 266 TypedArray a = context.obtainStyledAttributes(attrs, 267 R.styleable.Workspace, defStyle, 0); 268 269 final Resources res = context.getResources(); 270 if (LauncherApplication.isScreenLarge()) { 271 // Determine number of rows/columns dynamically 272 // TODO: This code currently fails on tablets with an aspect ratio < 1.3. 273 // Around that ratio we should make cells the same size in portrait and 274 // landscape 275 final DisplayMetrics dm = res.getDisplayMetrics(); 276 float widthDp = dm.widthPixels / dm.density; 277 float heightDp = dm.heightPixels / dm.density; 278 279 TypedArray actionBarSizeTypedArray = 280 context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize }); 281 final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); 282 final float systemBarHeight = res.getDimension(R.dimen.status_bar_height); 283 final float smallestScreenDim = res.getConfiguration().smallestScreenWidthDp; 284 285 cellCountX = 1; 286 while (CellLayout.widthInPortrait(res, cellCountX + 1) <= smallestScreenDim) { 287 cellCountX++; 288 } 289 290 cellCountY = 1; 291 while (actionBarHeight + CellLayout.heightInLandscape(res, cellCountY + 1) 292 <= smallestScreenDim - systemBarHeight) { 293 cellCountY++; 294 } 295 } 296 297 mSpringLoadedShrinkFactor = 298 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 299 300 // if the value is manually specified, use that instead 301 cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX); 302 cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY); 303 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 304 a.recycle(); 305 306 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 307 setHapticFeedbackEnabled(false); 308 309 initWorkspace(); 310 311 // Disable multitouch across the workspace/all apps/customize tray 312 setMotionEventSplittingEnabled(true); 313 } 314 315 /** 316 * Initializes various states for this workspace. 317 */ 318 protected void initWorkspace() { 319 Context context = getContext(); 320 mCurrentPage = mDefaultPage; 321 Launcher.setScreen(mCurrentPage); 322 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 323 mIconCache = app.getIconCache(); 324 mExternalDragOutlinePaint.setAntiAlias(true); 325 setWillNotDraw(false); 326 327 try { 328 final Resources res = getResources(); 329 mBackground = res.getDrawable(R.drawable.all_apps_bg_gradient); 330 } catch (Resources.NotFoundException e) { 331 // In this case, we will skip drawing background protection 332 } 333 334 mUnshrinkAnimationListener = new AnimatorListenerAdapter() { 335 @Override 336 public void onAnimationStart(Animator animation) { 337 mIsInUnshrinkAnimation = true; 338 } 339 340 @Override 341 public void onAnimationEnd(Animator animation) { 342 mIsInUnshrinkAnimation = false; 343 mSyncWallpaperOffsetWithScroll = true; 344 if (mShrinkState == ShrinkState.SPRING_LOADED) { 345 View layout = null; 346 if (mLastDragView != null) { 347 layout = findMatchingPageForDragOver(mLastDragView, mLastDragOriginX, 348 mLastDragOriginY, mLastDragXOffset, mLastDragYOffset); 349 } 350 } 351 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 352 mAnimator = null; 353 enableChildrenLayers(false); 354 } 355 }; 356 mShrinkAnimationListener = new AnimatorListenerAdapter() { 357 @Override 358 public void onAnimationStart(Animator animation) { 359 enableChildrenLayers(true); 360 } 361 @Override 362 public void onAnimationEnd(Animator animation) { 363 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 364 mAnimator = null; 365 } 366 }; 367 mSnapVelocity = 600; 368 mWallpaperOffset = new WallpaperOffsetInterpolator(); 369 } 370 371 @Override 372 protected int getScrollMode() { 373 return SmoothPagedView.X_LARGE_MODE; 374 } 375 376 private void onAddView(View child) { 377 if (!(child instanceof CellLayout)) { 378 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 379 } 380 CellLayout cl = ((CellLayout) child); 381 cl.setOnInterceptTouchListener(this); 382 cl.setOnClickListener(this); 383 cl.setClickable(true); 384 cl.enableHardwareLayers(); 385 } 386 387 @Override 388 public void addView(View child, int index, LayoutParams params) { 389 onAddView(child); 390 super.addView(child, index, params); 391 } 392 393 @Override 394 public void addView(View child) { 395 onAddView(child); 396 super.addView(child); 397 } 398 399 @Override 400 public void addView(View child, int index) { 401 onAddView(child); 402 super.addView(child, index); 403 } 404 405 @Override 406 public void addView(View child, int width, int height) { 407 onAddView(child); 408 super.addView(child, width, height); 409 } 410 411 @Override 412 public void addView(View child, LayoutParams params) { 413 onAddView(child); 414 super.addView(child, params); 415 } 416 417 /** 418 * @return The open folder on the current screen, or null if there is none 419 */ 420 Folder getOpenFolder() { 421 ViewGroup currentPage = ((CellLayout) getChildAt(mCurrentPage)).getChildrenLayout(); 422 int count = currentPage.getChildCount(); 423 for (int i = 0; i < count; i++) { 424 View child = currentPage.getChildAt(i); 425 if (child instanceof Folder) { 426 Folder folder = (Folder) child; 427 if (folder.getInfo().opened) 428 return folder; 429 } 430 } 431 return null; 432 } 433 434 ArrayList<Folder> getOpenFolders() { 435 final int screenCount = getChildCount(); 436 ArrayList<Folder> folders = new ArrayList<Folder>(screenCount); 437 438 for (int screen = 0; screen < screenCount; screen++) { 439 ViewGroup currentPage = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 440 int count = currentPage.getChildCount(); 441 for (int i = 0; i < count; i++) { 442 View child = currentPage.getChildAt(i); 443 if (child instanceof Folder) { 444 Folder folder = (Folder) child; 445 if (folder.getInfo().opened) 446 folders.add(folder); 447 break; 448 } 449 } 450 } 451 return folders; 452 } 453 454 boolean isTouchActive() { 455 return mTouchState != TOUCH_STATE_REST; 456 } 457 458 /** 459 * Adds the specified child in the specified screen. The position and dimension of 460 * the child are defined by x, y, spanX and spanY. 461 * 462 * @param child The child to add in one of the workspace's screens. 463 * @param screen The screen in which to add the child. 464 * @param x The X position of the child in the screen's grid. 465 * @param y The Y position of the child in the screen's grid. 466 * @param spanX The number of cells spanned horizontally by the child. 467 * @param spanY The number of cells spanned vertically by the child. 468 */ 469 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY) { 470 addInScreen(child, screen, x, y, spanX, spanY, false); 471 } 472 473 void addInFullScreen(View child, int screen) { 474 addInScreen(child, screen, 0, 0, -1, -1); 475 } 476 477 /** 478 * Adds the specified child in the specified screen. The position and dimension of 479 * the child are defined by x, y, spanX and spanY. 480 * 481 * @param child The child to add in one of the workspace's screens. 482 * @param screen The screen in which to add the child. 483 * @param x The X position of the child in the screen's grid. 484 * @param y The Y position of the child in the screen's grid. 485 * @param spanX The number of cells spanned horizontally by the child. 486 * @param spanY The number of cells spanned vertically by the child. 487 * @param insert When true, the child is inserted at the beginning of the children list. 488 */ 489 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY, boolean insert) { 490 if (screen < 0 || screen >= getChildCount()) { 491 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 492 + " (was " + screen + "); skipping child"); 493 return; 494 } 495 496 final CellLayout group = (CellLayout) getChildAt(screen); 497 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 498 if (lp == null) { 499 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 500 } else { 501 lp.cellX = x; 502 lp.cellY = y; 503 lp.cellHSpan = spanX; 504 lp.cellVSpan = spanY; 505 } 506 507 if (spanX < 0 && spanY < 0) { 508 lp.isLockedToGrid = false; 509 } 510 511 // Get the canonical child id to uniquely represent this view in this screen 512 int childId = LauncherModel.getCellLayoutChildId(-1, screen, x, y, spanX, spanY); 513 boolean markCellsAsOccupied = !(child instanceof Folder); 514 if (!group.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 515 // TODO: This branch occurs when the workspace is adding views 516 // outside of the defined grid 517 // maybe we should be deleting these items from the LauncherModel? 518 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 519 } 520 521 if (!(child instanceof Folder)) { 522 child.setHapticFeedbackEnabled(false); 523 child.setOnLongClickListener(mLongClickListener); 524 } 525 if (child instanceof DropTarget) { 526 mDragController.addDropTarget((DropTarget) child); 527 } 528 } 529 530 /** 531 * Check if the point (x, y) hits a given page. 532 */ 533 private boolean hitsPage(int index, float x, float y) { 534 final View page = getChildAt(index); 535 if (page != null) { 536 float[] localXY = { x, y }; 537 mapPointFromSelfToChild(page, localXY); 538 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 539 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 540 } 541 return false; 542 } 543 544 @Override 545 protected boolean hitsPreviousPage(float x, float y) { 546 // mNextPage is set to INVALID_PAGE whenever we are stationary. 547 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 548 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 549 return hitsPage(current - 1, x, y); 550 } 551 552 @Override 553 protected boolean hitsNextPage(float x, float y) { 554 // mNextPage is set to INVALID_PAGE whenever we are stationary. 555 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 556 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 557 return hitsPage(current + 1, x, y); 558 } 559 560 /** 561 * Called directly from a CellLayout (not by the framework), after we've been added as a 562 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 563 * that it should intercept touch events, which is not something that is normally supported. 564 */ 565 @Override 566 public boolean onTouch(View v, MotionEvent event) { 567 return (mIsSmall || mIsInUnshrinkAnimation); 568 } 569 570 /** 571 * Handle a click event on a CellLayout. 572 */ 573 @Override 574 public void onClick(View cellLayout) { 575 // Only allow clicks on a CellLayout if it is shrunken and visible. 576 if ((mIsSmall || mIsInUnshrinkAnimation) && mShrinkState != ShrinkState.BOTTOM_HIDDEN) { 577 mLauncher.onWorkspaceClick((CellLayout) cellLayout); 578 } 579 } 580 581 protected void onWindowVisibilityChanged (int visibility) { 582 mLauncher.onWindowVisibilityChanged(visibility); 583 } 584 585 @Override 586 public boolean dispatchUnhandledMove(View focused, int direction) { 587 if (mIsSmall || mIsInUnshrinkAnimation) { 588 // when the home screens are shrunken, shouldn't allow side-scrolling 589 return false; 590 } 591 return super.dispatchUnhandledMove(focused, direction); 592 } 593 594 @Override 595 public boolean onInterceptTouchEvent(MotionEvent ev) { 596 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 597 mXDown = ev.getX(); 598 mYDown = ev.getY(); 599 } 600 601 return super.onInterceptTouchEvent(ev); 602 } 603 604 @Override 605 protected void determineScrollingStart(MotionEvent ev) { 606 if (!mIsSmall && !mIsInUnshrinkAnimation) { 607 float deltaX = Math.abs(ev.getX() - mXDown); 608 float deltaY = Math.abs(ev.getY() - mYDown); 609 610 if (Float.compare(deltaX, 0f) == 0) return; 611 612 float slope = deltaY / deltaX; 613 float theta = (float) Math.atan(slope); 614 615 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 616 cancelCurrentPageLongPress(); 617 } 618 619 if (theta > MAX_SWIPE_ANGLE) { 620 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 621 return; 622 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 623 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 624 // increase the touch slop to make it harder to begin scrolling the workspace. This 625 // results in vertically scrolling widgets to more easily. The higher the angle, the 626 // more we increase touch slop. 627 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 628 float extraRatio = (float) 629 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 630 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 631 } else { 632 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 633 super.determineScrollingStart(ev); 634 } 635 } 636 } 637 638 @Override 639 protected boolean isScrollingIndicatorEnabled() { 640 return mShrinkState != ShrinkState.SPRING_LOADED; 641 } 642 643 protected void onPageBeginMoving() { 644 super.onPageBeginMoving(); 645 646 if (mNextPage != INVALID_PAGE) { 647 // we're snapping to a particular screen 648 enableChildrenCache(mCurrentPage, mNextPage); 649 } else { 650 // this is when user is actively dragging a particular screen, they might 651 // swipe it either left or right (but we won't advance by more than one screen) 652 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 653 } 654 655 // Only show page outlines as we pan if we are on large screen 656 if (LauncherApplication.isScreenLarge()) { 657 showOutlines(); 658 } 659 } 660 661 protected void onPageEndMoving() { 662 super.onPageEndMoving(); 663 664 clearChildrenCache(); 665 // Hide the outlines, as long as we're not dragging 666 if (!mDragController.dragging()) { 667 // Only hide page outlines as we pan if we are on large screen 668 if (LauncherApplication.isScreenLarge()) { 669 hideOutlines(); 670 } 671 } 672 mOverScrollMaxBackgroundAlpha = 0.0f; 673 mOverScrollPageIndex = -1; 674 675 if (mDelayedResizeRunnable != null) { 676 mDelayedResizeRunnable.run(); 677 mDelayedResizeRunnable = null; 678 } 679 } 680 681 @Override 682 protected void notifyPageSwitchListener() { 683 super.notifyPageSwitchListener(); 684 685 if (mPreviousIndicator != null) { 686 // if we know the next page, we show the indication for it right away; it looks 687 // weird if the indicators are lagging 688 int page = mNextPage; 689 if (page == INVALID_PAGE) { 690 page = mCurrentPage; 691 } 692 mPreviousIndicator.setLevel(page); 693 mNextIndicator.setLevel(page); 694 } 695 Launcher.setScreen(mCurrentPage); 696 }; 697 698 // As a ratio of screen height, the total distance we want the parallax effect to span 699 // vertically 700 private float wallpaperTravelToScreenHeightRatio(int width, int height) { 701 return 1.1f; 702 } 703 704 // As a ratio of screen height, the total distance we want the parallax effect to span 705 // horizontally 706 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 707 float aspectRatio = width / (float) height; 708 709 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 710 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 711 // We will use these two data points to extrapolate how much the wallpaper parallax effect 712 // to span (ie travel) at any aspect ratio: 713 714 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 715 final float ASPECT_RATIO_PORTRAIT = 10/16f; 716 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 717 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 718 719 // To find out the desired width at different aspect ratios, we use the following two 720 // formulas, where the coefficient on x is the aspect ratio (width/height): 721 // (16/10)x + y = 1.5 722 // (10/16)x + y = 1.2 723 // We solve for x and y and end up with a final formula: 724 final float x = 725 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 726 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 727 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 728 return x * aspectRatio + y; 729 } 730 731 // The range of scroll values for Workspace 732 private int getScrollRange() { 733 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 734 } 735 736 protected void setWallpaperDimension() { 737 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 738 Point displaySize = new Point(); 739 display.getSize(displaySize); 740 if (LauncherApplication.isScreenLarge()) { 741 displaySize.y += (int) getResources().getDimension(R.dimen.status_bar_height); 742 } 743 final int maxDim = Math.max(displaySize.x, displaySize.y); 744 final int minDim = Math.min(displaySize.x, displaySize.y); 745 746 // We need to ensure that there is enough extra space in the wallpaper for the intended 747 // parallax effects 748 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 749 mWallpaperHeight = (int)(maxDim * wallpaperTravelToScreenHeightRatio(maxDim, minDim)); 750 new Thread("setWallpaperDimension") { 751 public void run() { 752 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 753 } 754 }.start(); 755 } 756 757 public void setVerticalWallpaperOffset(float offset) { 758 mWallpaperOffset.setFinalY(offset); 759 } 760 public float getVerticalWallpaperOffset() { 761 return mWallpaperOffset.getCurrY(); 762 } 763 public void setHorizontalWallpaperOffset(float offset) { 764 mWallpaperOffset.setFinalX(offset); 765 } 766 public float getHorizontalWallpaperOffset() { 767 return mWallpaperOffset.getCurrX(); 768 } 769 770 private float wallpaperOffsetForCurrentScroll() { 771 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 772 final boolean isStaticWallpaper = (mWallpaperManager.getWallpaperInfo() == null); 773 // The wallpaper travel width is how far, from left to right, the wallpaper will move 774 // at this orientation (for example, in portrait mode we don't move all the way to the 775 // edges of the wallpaper, or otherwise the parallax effect would be too strong) 776 int wallpaperTravelWidth = (int) (display.getWidth() * 777 wallpaperTravelToScreenWidthRatio(display.getWidth(), display.getHeight())); 778 if (!isStaticWallpaper) { 779 wallpaperTravelWidth = mWallpaperWidth; 780 } 781 782 // Set wallpaper offset steps (1 / (number of screens - 1)) 783 // We have 3 vertical offset states (centered, and then top/bottom aligned 784 // for all apps/customize) 785 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f / (3 - 1)); 786 787 int scrollRange = getScrollRange(); 788 float scrollProgressOffset = 0; 789 790 // Account for overscroll: you only see the absolute edge of the wallpaper if 791 // you overscroll as far as you can in landscape mode. Only do this for static wallpapers 792 // because live wallpapers (and probably 3rd party wallpaper providers) rely on the offset 793 // being even intervals from 0 to 1 (eg [0, 0.25, 0.5, 0.75, 1]) 794 if (isStaticWallpaper) { 795 int overscrollOffset = (int) (maxOverScroll() * display.getWidth()); 796 scrollProgressOffset += overscrollOffset / (float) getScrollRange(); 797 scrollRange += 2 * overscrollOffset; 798 } 799 800 float scrollProgress = 801 mScrollX / (float) scrollRange + scrollProgressOffset; 802 float offsetInDips = wallpaperTravelWidth * scrollProgress + 803 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 804 float offset = offsetInDips / (float) mWallpaperWidth; 805 return offset; 806 } 807 private void syncWallpaperOffsetWithScroll() { 808 final boolean enableWallpaperEffects = isHardwareAccelerated(); 809 if (enableWallpaperEffects) { 810 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 811 } 812 } 813 814 public void updateWallpaperOffsetImmediately() { 815 mUpdateWallpaperOffsetImmediately = true; 816 } 817 818 private void updateWallpaperOffsets() { 819 boolean updateNow = false; 820 boolean keepUpdating = true; 821 if (mUpdateWallpaperOffsetImmediately) { 822 updateNow = true; 823 keepUpdating = false; 824 mWallpaperOffset.jumpToFinal(); 825 mUpdateWallpaperOffsetImmediately = false; 826 } else { 827 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 828 } 829 if (updateNow) { 830 if (mWindowToken != null) { 831 mWallpaperManager.setWallpaperOffsets(mWindowToken, 832 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 833 } 834 } 835 if (keepUpdating) { 836 fastInvalidate(); 837 } 838 } 839 840 class WallpaperOffsetInterpolator { 841 float mFinalHorizontalWallpaperOffset = 0.0f; 842 float mFinalVerticalWallpaperOffset = 0.5f; 843 float mHorizontalWallpaperOffset = 0.0f; 844 float mVerticalWallpaperOffset = 0.5f; 845 long mLastWallpaperOffsetUpdateTime; 846 boolean mIsMovingFast; 847 boolean mOverrideHorizontalCatchupConstant; 848 float mHorizontalCatchupConstant = 0.35f; 849 float mVerticalCatchupConstant = 0.35f; 850 851 public WallpaperOffsetInterpolator() { 852 } 853 854 public void setOverrideHorizontalCatchupConstant(boolean override) { 855 mOverrideHorizontalCatchupConstant = override; 856 } 857 858 public void setHorizontalCatchupConstant(float f) { 859 mHorizontalCatchupConstant = f; 860 } 861 862 public void setVerticalCatchupConstant(float f) { 863 mVerticalCatchupConstant = f; 864 } 865 866 public boolean computeScrollOffset() { 867 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 868 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 869 mIsMovingFast = false; 870 return false; 871 } 872 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 873 boolean isLandscape = display.getWidth() > display.getHeight(); 874 875 long currentTime = System.currentTimeMillis(); 876 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 877 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 878 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 879 880 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 881 if (!mIsMovingFast && xdiff > 0.07) { 882 mIsMovingFast = true; 883 } 884 885 float fractionToCatchUpIn1MsHorizontal; 886 if (mOverrideHorizontalCatchupConstant) { 887 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 888 } else if (mIsMovingFast) { 889 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 890 } else { 891 // slow 892 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 893 } 894 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 895 896 fractionToCatchUpIn1MsHorizontal /= 33f; 897 fractionToCatchUpIn1MsVertical /= 33f; 898 899 final float UPDATE_THRESHOLD = 0.00001f; 900 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 901 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 902 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 903 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 904 if (jumpToFinalValue) { 905 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 906 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 907 } else { 908 float percentToCatchUpVertical = 909 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 910 float percentToCatchUpHorizontal = 911 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 912 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 913 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 914 } 915 916 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 917 return true; 918 } 919 920 public float getCurrX() { 921 return mHorizontalWallpaperOffset; 922 } 923 924 public float getFinalX() { 925 return mFinalHorizontalWallpaperOffset; 926 } 927 928 public float getCurrY() { 929 return mVerticalWallpaperOffset; 930 } 931 932 public float getFinalY() { 933 return mFinalVerticalWallpaperOffset; 934 } 935 936 public void setFinalX(float x) { 937 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 938 } 939 940 public void setFinalY(float y) { 941 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 942 } 943 944 public void jumpToFinal() { 945 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 946 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 947 } 948 } 949 950 @Override 951 public void computeScroll() { 952 super.computeScroll(); 953 if (mSyncWallpaperOffsetWithScroll) { 954 syncWallpaperOffsetWithScroll(); 955 } 956 } 957 958 void showOutlines() { 959 if (!mIsSmall && !mIsInUnshrinkAnimation) { 960 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 961 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 962 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 963 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 964 mChildrenOutlineFadeInAnimation.start(); 965 } 966 } 967 968 void hideOutlines() { 969 if (!mIsSmall && !mIsInUnshrinkAnimation) { 970 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 971 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 972 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 973 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 974 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 975 mChildrenOutlineFadeOutAnimation.start(); 976 } 977 } 978 979 public void showOutlinesTemporarily() { 980 if (!mIsPageMoving && !isTouchActive()) { 981 snapToPage(mCurrentPage); 982 } 983 } 984 985 public void setChildrenOutlineAlpha(float alpha) { 986 mChildrenOutlineAlpha = alpha; 987 for (int i = 0; i < getChildCount(); i++) { 988 CellLayout cl = (CellLayout) getChildAt(i); 989 cl.setBackgroundAlpha(alpha); 990 } 991 } 992 993 public float getChildrenOutlineAlpha() { 994 return mChildrenOutlineAlpha; 995 } 996 997 void disableBackground() { 998 mDrawBackground = false; 999 } 1000 void enableBackground() { 1001 mDrawBackground = true; 1002 } 1003 1004 private void showBackgroundGradientForAllApps() { 1005 showBackgroundGradient(); 1006 } 1007 1008 private void showBackgroundGradient() { 1009 if (mBackground == null) return; 1010 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 1011 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 1012 mBackgroundFadeInAnimation = ValueAnimator.ofFloat(getBackgroundAlpha(), 1f); 1013 mBackgroundFadeInAnimation.addUpdateListener(new AnimatorUpdateListener() { 1014 public void onAnimationUpdate(ValueAnimator animation) { 1015 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1016 } 1017 }); 1018 mBackgroundFadeInAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1019 mBackgroundFadeInAnimation.setDuration(BACKGROUND_FADE_IN_DURATION); 1020 mBackgroundFadeInAnimation.start(); 1021 } 1022 1023 private void hideBackgroundGradient() { 1024 if (mBackground == null) return; 1025 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 1026 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 1027 mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(getBackgroundAlpha(), 0f); 1028 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1029 public void onAnimationUpdate(ValueAnimator animation) { 1030 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1031 } 1032 }); 1033 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1034 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1035 mBackgroundFadeOutAnimation.start(); 1036 } 1037 1038 public void setBackgroundAlpha(float alpha) { 1039 if (alpha != mBackgroundAlpha) { 1040 mBackgroundAlpha = alpha; 1041 invalidate(); 1042 } 1043 } 1044 1045 public float getBackgroundAlpha() { 1046 return mBackgroundAlpha; 1047 } 1048 1049 /** 1050 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 1051 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 1052 * as being larger. This method computes what offset the rotated view should be translated 1053 * in order to minimize this perceived gap. 1054 * @param degrees Angle of the view 1055 * @param width Width of the view 1056 * @param height Height of the view 1057 * @return Offset to be used in a View.setTranslationX() call 1058 */ 1059 private float getOffsetXForRotation(float degrees, int width, int height) { 1060 mMatrix.reset(); 1061 mCamera.save(); 1062 mCamera.rotateY(Math.abs(degrees)); 1063 mCamera.getMatrix(mMatrix); 1064 mCamera.restore(); 1065 1066 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 1067 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 1068 mTempFloat2[0] = width; 1069 mTempFloat2[1] = height; 1070 mMatrix.mapPoints(mTempFloat2); 1071 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 1072 } 1073 1074 float backgroundAlphaInterpolator(float r) { 1075 float pivotA = 0.1f; 1076 float pivotB = 0.4f; 1077 if (r < pivotA) { 1078 return 0; 1079 } else if (r > pivotB) { 1080 return 1.0f; 1081 } else { 1082 return (r - pivotA)/(pivotB - pivotA); 1083 } 1084 } 1085 1086 float overScrollBackgroundAlphaInterpolator(float r) { 1087 float threshold = 0.08f; 1088 1089 if (r > mOverScrollMaxBackgroundAlpha) { 1090 mOverScrollMaxBackgroundAlpha = r; 1091 } else if (r < mOverScrollMaxBackgroundAlpha) { 1092 r = mOverScrollMaxBackgroundAlpha; 1093 } 1094 1095 return Math.min(r / threshold, 1.0f); 1096 } 1097 1098 @Override 1099 protected void screenScrolled(int screenCenter) { 1100 super.screenScrolled(screenCenter); 1101 1102 // If the screen is not xlarge, then don't rotate the CellLayouts 1103 // NOTE: If we don't update the side pages alpha, then we should not hide the side pages. 1104 // see unshrink(). 1105 if (!LauncherApplication.isScreenLarge()) return; 1106 1107 final int halfScreenSize = getMeasuredWidth() / 2; 1108 1109 for (int i = 0; i < getChildCount(); i++) { 1110 CellLayout cl = (CellLayout) getChildAt(i); 1111 if (cl != null) { 1112 int totalDistance = getScaledMeasuredWidth(cl) + mPageSpacing; 1113 int delta = screenCenter - (getChildOffset(i) - 1114 getRelativeChildOffset(i) + halfScreenSize); 1115 1116 float scrollProgress = delta / (totalDistance * 1.0f); 1117 scrollProgress = Math.min(scrollProgress, 1.0f); 1118 scrollProgress = Math.max(scrollProgress, -1.0f); 1119 1120 // If the current page (i) is being overscrolled, we use a different 1121 // set of rules for setting the background alpha multiplier. 1122 if ((mScrollX < 0 && i == 0) || (mScrollX > mMaxScrollX && 1123 i == getChildCount() -1 )) { 1124 cl.setBackgroundAlphaMultiplier( 1125 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 1126 mOverScrollPageIndex = i; 1127 } else if (mOverScrollPageIndex != i) { 1128 cl.setBackgroundAlphaMultiplier( 1129 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1130 } 1131 1132 float rotation = WORKSPACE_ROTATION * scrollProgress; 1133 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1134 cl.setTranslationX(translationX); 1135 1136 cl.setRotationY(rotation); 1137 } 1138 } 1139 } 1140 1141 protected void onAttachedToWindow() { 1142 super.onAttachedToWindow(); 1143 mWindowToken = getWindowToken(); 1144 computeScroll(); 1145 mDragController.setWindowToken(mWindowToken); 1146 } 1147 1148 protected void onDetachedFromWindow() { 1149 mWindowToken = null; 1150 } 1151 1152 @Override 1153 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1154 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1155 mUpdateWallpaperOffsetImmediately = true; 1156 } 1157 super.onLayout(changed, left, top, right, bottom); 1158 1159 // if shrinkToBottom() is called on initialization, it has to be deferred 1160 // until after the first call to onLayout so that it has the correct width 1161 if (mWaitingToShrink) { 1162 // shrink can trigger a synchronous onLayout call, so we 1163 // post this to avoid a stack overflow / tangled onLayout calls 1164 post(new Runnable() { 1165 public void run() { 1166 shrink(mWaitingToShrinkState, false); 1167 mWaitingToShrink = false; 1168 } 1169 }); 1170 } 1171 } 1172 1173 public void showFolderAccept(FolderRingAnimator fra) { 1174 mFolderOuterRings.add(fra); 1175 } 1176 1177 public void hideFolderAccept(FolderRingAnimator fra) { 1178 if (mFolderOuterRings.contains(fra)) { 1179 mFolderOuterRings.remove(fra); 1180 } 1181 invalidate(); 1182 } 1183 1184 @Override 1185 protected void onDraw(Canvas canvas) { 1186 updateWallpaperOffsets(); 1187 1188 // Draw the background gradient if necessary 1189 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1190 int alpha = (int) (mBackgroundAlpha * 255); 1191 mBackground.setAlpha(alpha); 1192 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1193 getMeasuredHeight()); 1194 mBackground.draw(canvas); 1195 } 1196 1197 // The folder outer / inner ring image(s) 1198 for (int i = 0; i < mFolderOuterRings.size(); i++) { 1199 View currentPage = getChildAt(getCurrentPage()); 1200 Matrix m = currentPage.getMatrix(); 1201 1202 FolderRingAnimator fra = mFolderOuterRings.get(i); 1203 1204 // Draw outer ring 1205 Drawable d = FolderRingAnimator.sSharedOuterRingDrawable; 1206 int width = (int) fra.getOuterRingSize(); 1207 int height = width; 1208 fra.getLocation(mTempLocation); 1209 1210 // First we map the folder's location from window coordinates to its containing 1211 // CellLayout's coordinates. Then we transform the coordinates according to the 1212 // CellLayout's transform. Finally, we map this back into the coordinates of the 1213 // the window (ie. Workspace). 1214 int x = mTempLocation[0] + mScrollX - width / 2 - currentPage.getLeft(); 1215 int y = mTempLocation[1] + mScrollY - height / 2 - currentPage.getTop(); 1216 mTempFloatTuple[0] = x; 1217 mTempFloatTuple[1] = y; 1218 m.mapPoints(mTempFloatTuple); 1219 x = (int) (mTempFloatTuple[0]) + currentPage.getLeft(); 1220 y = (int) (mTempFloatTuple[1]) + currentPage.getTop(); 1221 1222 canvas.save(); 1223 canvas.translate(x, y); 1224 d.setBounds(0, 0, (int) (width * currentPage.getScaleX()), 1225 (int) (height * currentPage.getScaleY())); 1226 d.draw(canvas); 1227 canvas.restore(); 1228 1229 // Draw inner ring 1230 d = FolderRingAnimator.sSharedInnerRingDrawable; 1231 width = (int) fra.getInnerRingSize(); 1232 height = width; 1233 1234 // First we map the folder's location from window coordinates to its containing 1235 // CellLayout's coordinates. Then we transform the coordinates according to the 1236 // CellLayout's transform. Finally, we map this back into the coordinates of the 1237 // the window (ie. Workspace). 1238 x = mTempLocation[0] + mScrollX - width / 2 - currentPage.getLeft(); 1239 y = mTempLocation[1] + mScrollY - height / 2 - currentPage.getTop(); 1240 mTempFloatTuple[0] = x; 1241 mTempFloatTuple[1] = y; 1242 m.mapPoints(mTempFloatTuple); 1243 x = (int) (mTempFloatTuple[0]) + currentPage.getLeft(); 1244 y = (int) (mTempFloatTuple[1]) + currentPage.getTop(); 1245 1246 canvas.save(); 1247 canvas.translate(x, y); 1248 d.setBounds(0, 0, (int) (width * currentPage.getScaleX()), 1249 (int) (height * currentPage.getScaleY())); 1250 d.draw(canvas); 1251 canvas.restore(); 1252 } 1253 super.onDraw(canvas); 1254 } 1255 1256 @Override 1257 protected void dispatchDraw(Canvas canvas) { 1258 if (mIsSmall || mIsInUnshrinkAnimation) { 1259 // Draw all the workspaces if we're small 1260 final int pageCount = getChildCount(); 1261 final long drawingTime = getDrawingTime(); 1262 for (int i = 0; i < pageCount; i++) { 1263 final CellLayout page = (CellLayout) getChildAt(i); 1264 if (page.getVisibility() == VISIBLE 1265 && (page.getAlpha() != 0f || page.getBackgroundAlpha() != 0f)) { 1266 drawChild(canvas, page, drawingTime); 1267 } 1268 } 1269 } else { 1270 super.dispatchDraw(canvas); 1271 1272 final int width = getWidth(); 1273 final int height = getHeight(); 1274 1275 // In portrait orientation, draw the glowing edge when dragging to adjacent screens 1276 if (mInScrollArea && (height > width)) { 1277 final int pageHeight = getChildAt(0).getHeight(); 1278 1279 // This determines the height of the glowing edge: 90% of the page height 1280 final int padding = (int) ((height - pageHeight) * 0.5f + pageHeight * 0.1f); 1281 1282 final CellLayout leftPage = (CellLayout) getChildAt(mCurrentPage - 1); 1283 final CellLayout rightPage = (CellLayout) getChildAt(mCurrentPage + 1); 1284 1285 if (leftPage != null && leftPage.getIsDragOverlapping()) { 1286 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left); 1287 d.setBounds(mScrollX, padding, mScrollX + d.getIntrinsicWidth(), height - padding); 1288 d.draw(canvas); 1289 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 1290 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right); 1291 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), padding, mScrollX + width, height - padding); 1292 d.draw(canvas); 1293 } 1294 } 1295 1296 if (mDropView != null) { 1297 // We are animating an item that was just dropped on the home screen. 1298 // Render its View in the current animation position. 1299 canvas.save(Canvas.MATRIX_SAVE_FLAG); 1300 final int xPos = mDropViewPos[0] - mDropView.getScrollX(); 1301 final int yPos = mDropViewPos[1] - mDropView.getScrollY(); 1302 canvas.translate(xPos, yPos); 1303 mDropView.draw(canvas); 1304 canvas.restore(); 1305 } 1306 } 1307 } 1308 1309 @Override 1310 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1311 if (!mLauncher.isAllAppsVisible()) { 1312 final Folder openFolder = getOpenFolder(); 1313 if (openFolder != null) { 1314 return openFolder.requestFocus(direction, previouslyFocusedRect); 1315 } else { 1316 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1317 } 1318 } 1319 return false; 1320 } 1321 1322 @Override 1323 public int getDescendantFocusability() { 1324 if (mIsSmall) { 1325 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1326 } 1327 return super.getDescendantFocusability(); 1328 } 1329 1330 @Override 1331 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1332 if (!mLauncher.isAllAppsVisible()) { 1333 final Folder openFolder = getOpenFolder(); 1334 if (openFolder != null) { 1335 openFolder.addFocusables(views, direction); 1336 } else { 1337 super.addFocusables(views, direction, focusableMode); 1338 } 1339 } 1340 } 1341 1342 void enableChildrenCache(int fromPage, int toPage) { 1343 if (fromPage > toPage) { 1344 final int temp = fromPage; 1345 fromPage = toPage; 1346 toPage = temp; 1347 } 1348 1349 final int screenCount = getChildCount(); 1350 1351 fromPage = Math.max(fromPage, 0); 1352 toPage = Math.min(toPage, screenCount - 1); 1353 1354 for (int i = fromPage; i <= toPage; i++) { 1355 final CellLayout layout = (CellLayout) getChildAt(i); 1356 layout.setChildrenDrawnWithCacheEnabled(true); 1357 layout.setChildrenDrawingCacheEnabled(true); 1358 } 1359 } 1360 1361 void clearChildrenCache() { 1362 final int screenCount = getChildCount(); 1363 for (int i = 0; i < screenCount; i++) { 1364 final CellLayout layout = (CellLayout) getChildAt(i); 1365 layout.setChildrenDrawnWithCacheEnabled(false); 1366 } 1367 } 1368 1369 protected void enableChildrenLayers(boolean enable) { 1370 for (int i = 0; i < getPageCount(); i++) { 1371 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(enable); 1372 } 1373 } 1374 @Override 1375 protected void pageBeginMoving() { 1376 enableChildrenLayers(true); 1377 super.pageBeginMoving(); 1378 } 1379 1380 @Override 1381 protected void pageEndMoving() { 1382 if (!mIsSmall && !mIsInUnshrinkAnimation) { 1383 enableChildrenLayers(false); 1384 } 1385 super.pageEndMoving(); 1386 } 1387 1388 @Override 1389 protected void onWallpaperTap(MotionEvent ev) { 1390 final int[] position = mTempCell; 1391 getLocationOnScreen(position); 1392 1393 int pointerIndex = ev.getActionIndex(); 1394 position[0] += (int) ev.getX(pointerIndex); 1395 position[1] += (int) ev.getY(pointerIndex); 1396 1397 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1398 ev.getAction() == MotionEvent.ACTION_UP 1399 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1400 position[0], position[1], 0, null); 1401 } 1402 1403 public boolean isSmall() { 1404 return mIsSmall; 1405 } 1406 1407 private float getYScaleForScreen(int screen) { 1408 int x = Math.abs(screen - 2); 1409 1410 // TODO: This should be generalized for use with arbitrary rotation angles. 1411 switch(x) { 1412 case 0: return EXTRA_SCALE_FACTOR_0; 1413 case 1: return EXTRA_SCALE_FACTOR_1; 1414 case 2: return EXTRA_SCALE_FACTOR_2; 1415 } 1416 return 1.0f; 1417 } 1418 1419 public void shrink(ShrinkState shrinkState) { 1420 shrink(shrinkState, true); 1421 } 1422 1423 1424 // we use this to shrink the workspace for the all apps view and the customize view 1425 public void shrink(ShrinkState shrinkState, boolean animated) { 1426 if (mFirstLayout) { 1427 // (mFirstLayout == "first layout has not happened yet") 1428 // if we get a call to shrink() as part of our initialization (for example, if 1429 // Launcher is started in All Apps mode) then we need to wait for a layout call 1430 // to get our width so we can layout the mini-screen views correctly 1431 mWaitingToShrink = true; 1432 mWaitingToShrinkState = shrinkState; 1433 return; 1434 } 1435 // Stop any scrolling, move to the current page right away 1436 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1437 if (!mIsDragInProcess) { 1438 updateWhichPagesAcceptDrops(shrinkState); 1439 } 1440 1441 // Hide the scrollbar 1442 hideScrollingIndicator(true); 1443 1444 CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 1445 if (currentPage == null) { 1446 Log.w(TAG, "currentPage is NULL! mCurrentPage " + mCurrentPage 1447 + " mNextPage " + mNextPage); 1448 return; 1449 } 1450 if (currentPage.getBackgroundAlphaMultiplier() < 1.0f) { 1451 currentPage.setBackgroundAlpha(0.0f); 1452 } 1453 currentPage.setBackgroundAlphaMultiplier(1.0f); 1454 1455 mIsSmall = true; 1456 mShrinkState = shrinkState; 1457 1458 // we intercept and reject all touch events when we're small, so be sure to reset the state 1459 mTouchState = TOUCH_STATE_REST; 1460 mActivePointerId = INVALID_POINTER; 1461 1462 final Resources res = getResources(); 1463 final int screenWidth = getWidth(); 1464 final int screenHeight = getHeight(); 1465 1466 // How much the workspace shrinks when we enter all apps or customization mode 1467 final float shrinkFactor = res.getInteger(R.integer.config_workspaceShrinkPercent) / 100.0f; 1468 1469 // Making the assumption that all pages have the same width as the 0th 1470 final int pageWidth = getChildAt(0).getMeasuredWidth(); 1471 final int pageHeight = getChildAt(0).getMeasuredHeight(); 1472 1473 final int scaledPageWidth = (int) (shrinkFactor * pageWidth); 1474 final int scaledPageHeight = (int) (shrinkFactor * pageHeight); 1475 final float extraScaledSpacing = res.getDimension(R.dimen.smallScreenExtraSpacing); 1476 1477 final int screenCount = getChildCount(); 1478 float totalWidth = screenCount * scaledPageWidth + (screenCount - 1) * extraScaledSpacing; 1479 1480 boolean isPortrait = getMeasuredHeight() > getMeasuredWidth(); 1481 float y = (isPortrait ? 1482 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginPortrait) : 1483 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginLandscape)); 1484 float finalAlpha = 1.0f; 1485 float extraShrinkFactor = 1.0f; 1486 1487 if (shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1488 y = screenHeight - y - scaledPageHeight; 1489 } else if (shrinkState == ShrinkState.BOTTOM_HIDDEN) { 1490 // We shrink and disappear to nothing in the case of all apps 1491 // (which is when we shrink to the bottom) 1492 y = screenHeight - y - scaledPageHeight; 1493 finalAlpha = 0.0f; 1494 } else if (shrinkState == ShrinkState.MIDDLE) { 1495 y = screenHeight / 2 - scaledPageHeight / 2; 1496 finalAlpha = 1.0f; 1497 } 1498 1499 int duration; 1500 if (shrinkState == ShrinkState.BOTTOM_HIDDEN || shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1501 duration = res.getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1502 } else { 1503 duration = res.getInteger(R.integer.config_customizeWorkspaceShrinkTime); 1504 } 1505 1506 // We animate all the screens to the centered position in workspace 1507 // At the same time, the screens become greyed/dimmed 1508 1509 // newX is initialized to the left-most position of the centered screens 1510 float x = mScroller.getFinalX() + screenWidth / 2 - totalWidth / 2; 1511 1512 // We are going to scale about the center of the view, so we need to adjust the positions 1513 // of the views accordingly 1514 x -= (pageWidth - scaledPageWidth) / 2.0f; 1515 y -= (pageHeight - scaledPageHeight) / 2.0f; 1516 1517 if (mAnimator != null) { 1518 mAnimator.cancel(); 1519 } 1520 1521 mAnimator = new AnimatorSet(); 1522 1523 final int childCount = getChildCount(); 1524 final float[] oldXs = new float[childCount]; 1525 final float[] oldYs = new float[childCount]; 1526 final float[] oldScaleXs = new float[childCount]; 1527 final float[] oldScaleYs = new float[childCount]; 1528 final float[] oldBackgroundAlphas = new float[childCount]; 1529 final float[] oldAlphas = new float[childCount]; 1530 final float[] oldRotationYs = new float[childCount]; 1531 final float[] newXs = new float[childCount]; 1532 final float[] newYs = new float[childCount]; 1533 final float[] newScaleXs = new float[childCount]; 1534 final float[] newScaleYs = new float[childCount]; 1535 final float[] newBackgroundAlphas = new float[childCount]; 1536 final float[] newAlphas = new float[childCount]; 1537 final float[] newRotationYs = new float[childCount]; 1538 1539 for (int i = 0; i < screenCount; i++) { 1540 final CellLayout cl = (CellLayout) getChildAt(i); 1541 1542 float rotation = (-i + 2) * WORKSPACE_ROTATION; 1543 float rotationScaleX = (float) (1.0f / Math.cos(Math.PI * rotation / 180.0f)); 1544 float rotationScaleY = getYScaleForScreen(i); 1545 1546 oldAlphas[i] = cl.getAlpha(); 1547 newAlphas[i] = finalAlpha; 1548 if (animated && (oldAlphas[i] != 0f || newAlphas[i] != 0f)) { 1549 // if the CellLayout will be visible during the animation, force building its 1550 // hardware layer immediately so we don't see a blip later in the animation 1551 cl.buildChildrenLayer(); 1552 } 1553 if (animated) { 1554 oldXs[i] = cl.getX(); 1555 oldYs[i] = cl.getY(); 1556 oldScaleXs[i] = cl.getScaleX(); 1557 oldScaleYs[i] = cl.getScaleY(); 1558 oldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1559 oldRotationYs[i] = cl.getRotationY(); 1560 newXs[i] = x; 1561 newYs[i] = y; 1562 newScaleXs[i] = shrinkFactor * rotationScaleX * extraShrinkFactor; 1563 newScaleYs[i] = shrinkFactor * rotationScaleY * extraShrinkFactor; 1564 newBackgroundAlphas[i] = finalAlpha; 1565 newRotationYs[i] = rotation; 1566 } else { 1567 cl.setX((int)x); 1568 cl.setY((int)y); 1569 cl.setScaleX(shrinkFactor * rotationScaleX * extraShrinkFactor); 1570 cl.setScaleY(shrinkFactor * rotationScaleY * extraShrinkFactor); 1571 cl.setBackgroundAlpha(finalAlpha); 1572 cl.setAlpha(finalAlpha); 1573 cl.setRotationY(rotation); 1574 mShrinkAnimationListener.onAnimationEnd(null); 1575 } 1576 // increment newX for the next screen 1577 x += scaledPageWidth + extraScaledSpacing; 1578 } 1579 1580 float wallpaperOffset = 0.5f; 1581 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 1582 int wallpaperTravelHeight = (int) (display.getHeight() * 1583 wallpaperTravelToScreenHeightRatio(display.getWidth(), display.getHeight())); 1584 float offsetFromCenter = (wallpaperTravelHeight / (float) mWallpaperHeight) / 2f; 1585 boolean isLandscape = display.getWidth() > display.getHeight(); 1586 1587 final boolean enableWallpaperEffects = isHardwareAccelerated(); 1588 if (enableWallpaperEffects) { 1589 switch (shrinkState) { 1590 // animating in 1591 case MIDDLE: 1592 case SPRING_LOADED: 1593 wallpaperOffset = 0.5f; 1594 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.34f : 0.32f); 1595 break; 1596 case BOTTOM_HIDDEN: 1597 case BOTTOM_VISIBLE: 1598 // allapps 1599 wallpaperOffset = 0.5f - offsetFromCenter; 1600 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.34f : 0.32f); 1601 break; 1602 } 1603 } 1604 1605 setLayoutScale(1.0f); 1606 if (animated) { 1607 if (enableWallpaperEffects) { 1608 mWallpaperOffset.setHorizontalCatchupConstant(0.46f); 1609 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1610 } 1611 1612 mSyncWallpaperOffsetWithScroll = false; 1613 1614 ValueAnimator animWithInterpolator = 1615 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1616 animWithInterpolator.setInterpolator(mZoomOutInterpolator); 1617 1618 final float oldHorizontalWallpaperOffset = getHorizontalWallpaperOffset(); 1619 final float oldVerticalWallpaperOffset = getVerticalWallpaperOffset(); 1620 final float newHorizontalWallpaperOffset = 0.5f; 1621 final float newVerticalWallpaperOffset = wallpaperOffset; 1622 animWithInterpolator.addUpdateListener(new LauncherAnimatorUpdateListener() { 1623 public void onAnimationUpdate(float a, float b) { 1624 if (b == 0f) { 1625 // an optimization, and required for correct behavior. 1626 return; 1627 } 1628 fastInvalidate(); 1629 if (enableWallpaperEffects) { 1630 setHorizontalWallpaperOffset( 1631 a * oldHorizontalWallpaperOffset + b * newHorizontalWallpaperOffset); 1632 setVerticalWallpaperOffset( 1633 a * oldVerticalWallpaperOffset + b * newVerticalWallpaperOffset); 1634 } 1635 for (int i = 0; i < screenCount; i++) { 1636 final CellLayout cl = (CellLayout) getChildAt(i); 1637 cl.fastInvalidate(); 1638 cl.setFastX(a * oldXs[i] + b * newXs[i]); 1639 cl.setFastY(a * oldYs[i] + b * newYs[i]); 1640 cl.setFastScaleX(a * oldScaleXs[i] + b * newScaleXs[i]); 1641 cl.setFastScaleY(a * oldScaleYs[i] + b * newScaleYs[i]); 1642 cl.setFastBackgroundAlpha( 1643 a * oldBackgroundAlphas[i] + b * newBackgroundAlphas[i]); 1644 cl.setFastAlpha(a * oldAlphas[i] + b * newAlphas[i]); 1645 cl.setFastRotationY(a * oldRotationYs[i] + b * newRotationYs[i]); 1646 } 1647 } 1648 }); 1649 mAnimator.playTogether(animWithInterpolator); 1650 mAnimator.addListener(mShrinkAnimationListener); 1651 mAnimator.start(); 1652 } else if (enableWallpaperEffects) { 1653 setVerticalWallpaperOffset(wallpaperOffset); 1654 setHorizontalWallpaperOffset(0.5f); 1655 updateWallpaperOffsetImmediately(); 1656 } 1657 setChildrenDrawnWithCacheEnabled(true); 1658 1659 showBackgroundGradientForAllApps(); 1660 } 1661 1662 /* 1663 * This interpolator emulates the rate at which the perceived scale of an object changes 1664 * as its distance from a camera increases. When this interpolator is applied to a scale 1665 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1666 * from the camera. 1667 */ 1668 static class ZInterpolator implements TimeInterpolator { 1669 private float focalLength; 1670 1671 public ZInterpolator(float foc) { 1672 focalLength = foc; 1673 } 1674 1675 public float getInterpolation(float input) { 1676 return (1.0f - focalLength / (focalLength + input)) / 1677 (1.0f - focalLength / (focalLength + 1.0f)); 1678 } 1679 } 1680 1681 /* 1682 * The exact reverse of ZInterpolator. 1683 */ 1684 static class InverseZInterpolator implements TimeInterpolator { 1685 private ZInterpolator zInterpolator; 1686 public InverseZInterpolator(float foc) { 1687 zInterpolator = new ZInterpolator(foc); 1688 } 1689 public float getInterpolation(float input) { 1690 return 1 - zInterpolator.getInterpolation(1 - input); 1691 } 1692 } 1693 1694 /* 1695 * ZInterpolator compounded with an ease-out. 1696 */ 1697 static class ZoomOutInterpolator implements TimeInterpolator { 1698 private final ZInterpolator zInterpolator = new ZInterpolator(0.2f); 1699 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(1.8f); 1700 1701 public float getInterpolation(float input) { 1702 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1703 } 1704 } 1705 1706 /* 1707 * InvereZInterpolator compounded with an ease-out. 1708 */ 1709 static class ZoomInInterpolator implements TimeInterpolator { 1710 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1711 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1712 1713 public float getInterpolation(float input) { 1714 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1715 } 1716 } 1717 1718 private final ZoomOutInterpolator mZoomOutInterpolator = new ZoomOutInterpolator(); 1719 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1720 1721 private void updateWhichPagesAcceptDrops(ShrinkState state) { 1722 updateWhichPagesAcceptDropsHelper(state, false, 1, 1); 1723 } 1724 1725 private void updateWhichPagesAcceptDropsDuringDrag(ShrinkState state, int spanX, int spanY) { 1726 updateWhichPagesAcceptDropsHelper(state, true, spanX, spanY); 1727 } 1728 1729 private void updateWhichPagesAcceptDropsHelper( 1730 ShrinkState state, boolean isDragHappening, int spanX, int spanY) { 1731 final int screenCount = getChildCount(); 1732 for (int i = 0; i < screenCount; i++) { 1733 CellLayout cl = (CellLayout) getChildAt(i); 1734 cl.setIsDragOccuring(isDragHappening); 1735 if (state == null) { 1736 // If we are not in a shrunken state, mark all cell layouts as droppable (if they 1737 // have the space) 1738 cl.setAcceptsDrops(cl.findCellForSpan(null, spanX, spanY)); 1739 } else { 1740 switch (state) { 1741 case BOTTOM_HIDDEN: 1742 case BOTTOM_VISIBLE: 1743 case SPRING_LOADED: 1744 cl.setIsDefaultDropTarget(false); 1745 if (!isDragHappening) { 1746 // even if a drag isn't happening, we don't want to show a screen as 1747 // accepting drops if it doesn't have at least one free cell 1748 spanX = 1; 1749 spanY = 1; 1750 } 1751 // the page accepts drops if we can find at least one empty spot 1752 cl.setAcceptsDrops(cl.findCellForSpan(null, spanX, spanY)); 1753 break; 1754 default: 1755 throw new RuntimeException("Unhandled ShrinkState " + state); 1756 } 1757 } 1758 } 1759 } 1760 1761 /* 1762 * 1763 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1764 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1765 * 1766 * These methods mark the appropriate pages as accepting drops (which alters their visual 1767 * appearance). 1768 * 1769 */ 1770 public void onDragStartedWithItem(View v) { 1771 mIsDragInProcess = true; 1772 1773 final Canvas canvas = new Canvas(); 1774 1775 // We need to add extra padding to the bitmap to make room for the glow effect 1776 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1777 1778 // The outline is used to visualize where the item will land if dropped 1779 mDragOutline = createDragOutline(v, canvas, bitmapPadding); 1780 } 1781 1782 public void onDragStartedWithItemSpans(int spanX, int spanY, Bitmap b) { 1783 mIsDragInProcess = true; 1784 1785 final Canvas canvas = new Canvas(); 1786 1787 // We need to add extra padding to the bitmap to make room for the glow effect 1788 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1789 1790 CellLayout cl = (CellLayout) getChildAt(0); 1791 1792 int[] size = cl.cellSpansToSize(spanX, spanY); 1793 1794 // The outline is used to visualize where the item will land if dropped 1795 mDragOutline = createDragOutline(b, canvas, bitmapPadding, size[0], size[1]); 1796 1797 updateWhichPagesAcceptDropsDuringDrag(mShrinkState, spanX, spanY); 1798 } 1799 1800 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1801 // never dragged over 1802 public void onDragStopped(boolean success) { 1803 mLastDragView = null; 1804 // In the success case, DragController has already called onDragExit() 1805 if (!success) { 1806 doDragExit(null); 1807 } 1808 mIsDragInProcess = false; 1809 updateWhichPagesAcceptDrops(mShrinkState); 1810 } 1811 1812 // We call this when we trigger an unshrink by clicking on the CellLayout cl 1813 public void unshrink(CellLayout clThatWasClicked) { 1814 unshrink(clThatWasClicked, false); 1815 } 1816 1817 public void unshrink(CellLayout clThatWasClicked, boolean springLoaded) { 1818 int newCurrentPage = indexOfChild(clThatWasClicked); 1819 if (mIsSmall) { 1820 if (springLoaded) { 1821 setLayoutScale(mSpringLoadedShrinkFactor); 1822 } 1823 scrollToNewPageWithoutMovingPages(newCurrentPage); 1824 unshrink(true, springLoaded); 1825 } 1826 } 1827 1828 1829 public void enterSpringLoadedDragMode(CellLayout clThatWasClicked) { 1830 mShrinkState = ShrinkState.SPRING_LOADED; 1831 unshrink(clThatWasClicked, true); 1832 mDragTargetLayout = getCurrentDropLayout(); 1833 mDragTargetLayout.onDragEnter(); 1834 mDragTargetLayout.setIsDragOverlapping(true); 1835 showOutlines(); 1836 } 1837 1838 public void exitSpringLoadedDragMode(ShrinkState shrinkState) { 1839 shrink(shrinkState); 1840 if (mDragTargetLayout != null) { 1841 mDragTargetLayout.onDragExit(); 1842 mDragTargetLayout = null; 1843 } 1844 } 1845 1846 public void exitWidgetResizeMode() { 1847 DragLayer dragLayer = (DragLayer) mLauncher.findViewById(R.id.drag_layer); 1848 dragLayer.clearAllResizeFrames(); 1849 } 1850 1851 void unshrink(boolean animated) { 1852 unshrink(animated, false); 1853 } 1854 1855 void unshrink(boolean animated, boolean springLoaded) { 1856 mWaitingToShrink = false; 1857 if (mIsSmall) { 1858 float finalScaleFactor = 1.0f; 1859 float finalBackgroundAlpha = 0.0f; 1860 if (springLoaded) { 1861 finalScaleFactor = mSpringLoadedShrinkFactor; 1862 finalBackgroundAlpha = 1.0f; 1863 } else { 1864 mIsSmall = false; 1865 } 1866 if (mAnimator != null) { 1867 mAnimator.cancel(); 1868 } 1869 1870 mAnimator = new AnimatorSet(); 1871 final int screenCount = getChildCount(); 1872 1873 final int duration = getResources().getInteger(R.integer.config_workspaceUnshrinkTime); 1874 1875 final float[] oldTranslationXs = new float[getChildCount()]; 1876 final float[] oldTranslationYs = new float[getChildCount()]; 1877 final float[] oldScaleXs = new float[getChildCount()]; 1878 final float[] oldScaleYs = new float[getChildCount()]; 1879 final float[] oldBackgroundAlphas = new float[getChildCount()]; 1880 final float[] oldBackgroundAlphaMultipliers = new float[getChildCount()]; 1881 final float[] oldAlphas = new float[getChildCount()]; 1882 final float[] oldRotationYs = new float[getChildCount()]; 1883 final float[] newTranslationXs = new float[getChildCount()]; 1884 final float[] newTranslationYs = new float[getChildCount()]; 1885 final float[] newScaleXs = new float[getChildCount()]; 1886 final float[] newScaleYs = new float[getChildCount()]; 1887 final float[] newBackgroundAlphas = new float[getChildCount()]; 1888 final float[] newBackgroundAlphaMultipliers = new float[getChildCount()]; 1889 final float[] newAlphas = new float[getChildCount()]; 1890 final float[] newRotationYs = new float[getChildCount()]; 1891 1892 for (int i = 0; i < screenCount; i++) { 1893 final CellLayout cl = (CellLayout)getChildAt(i); 1894 float finalAlphaValue = 0f; 1895 float rotation = 0f; 1896 if (LauncherApplication.isScreenLarge()) { 1897 finalAlphaValue = (i == mCurrentPage) ? 1.0f : 0.0f; 1898 1899 if (i < mCurrentPage) { 1900 rotation = WORKSPACE_ROTATION; 1901 } else if (i > mCurrentPage) { 1902 rotation = -WORKSPACE_ROTATION; 1903 } 1904 } else { 1905 // Don't hide the side panes on the phone if we don't also update the side pages 1906 // alpha. See screenScrolled(). 1907 finalAlphaValue = 1f; 1908 } 1909 float finalAlphaMultiplierValue = 1f; 1910 1911 float translation = 0f; 1912 1913 // If the screen is not xlarge, then don't rotate the CellLayouts 1914 // NOTE: If we don't update the side pages alpha, then we should not hide the side 1915 // pages. see unshrink(). 1916 if (LauncherApplication.isScreenLarge()) { 1917 translation = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1918 } 1919 1920 oldAlphas[i] = cl.getAlpha(); 1921 newAlphas[i] = finalAlphaValue; 1922 if (animated) { 1923 oldTranslationXs[i] = cl.getTranslationX(); 1924 oldTranslationYs[i] = cl.getTranslationY(); 1925 oldScaleXs[i] = cl.getScaleX(); 1926 oldScaleYs[i] = cl.getScaleY(); 1927 oldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1928 oldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1929 oldRotationYs[i] = cl.getRotationY(); 1930 1931 newTranslationXs[i] = translation; 1932 newTranslationYs[i] = 0f; 1933 newScaleXs[i] = finalScaleFactor; 1934 newScaleYs[i] = finalScaleFactor; 1935 newBackgroundAlphas[i] = finalBackgroundAlpha; 1936 newBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1937 newRotationYs[i] = rotation; 1938 } else { 1939 cl.setTranslationX(translation); 1940 cl.setTranslationY(0.0f); 1941 cl.setScaleX(finalScaleFactor); 1942 cl.setScaleY(finalScaleFactor); 1943 cl.setBackgroundAlpha(0.0f); 1944 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1945 cl.setAlpha(finalAlphaValue); 1946 cl.setRotationY(rotation); 1947 mUnshrinkAnimationListener.onAnimationEnd(null); 1948 } 1949 } 1950 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 1951 boolean isLandscape = display.getWidth() > display.getHeight(); 1952 final boolean enableWallpaperEffects = isHardwareAccelerated(); 1953 if (enableWallpaperEffects) { 1954 switch (mShrinkState) { 1955 // animating out 1956 case MIDDLE: 1957 case SPRING_LOADED: 1958 if (animated) { 1959 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.49f : 0.46f); 1960 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.49f : 0.46f); 1961 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1962 } 1963 break; 1964 case BOTTOM_HIDDEN: 1965 case BOTTOM_VISIBLE: 1966 // all apps 1967 if (animated) { 1968 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.65f : 0.65f); 1969 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.65f : 0.65f); 1970 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1971 } 1972 break; 1973 } 1974 } 1975 if (animated) { 1976 ValueAnimator animWithInterpolator = 1977 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1978 animWithInterpolator.setInterpolator(mZoomInInterpolator); 1979 1980 final float oldHorizontalWallpaperOffset = enableWallpaperEffects ? 1981 getHorizontalWallpaperOffset() : 0; 1982 final float oldVerticalWallpaperOffset = enableWallpaperEffects ? 1983 getVerticalWallpaperOffset() : 0; 1984 final float newHorizontalWallpaperOffset = enableWallpaperEffects ? 1985 wallpaperOffsetForCurrentScroll() : 0; 1986 final float newVerticalWallpaperOffset = enableWallpaperEffects ? 0.5f : 0; 1987 animWithInterpolator.addUpdateListener(new LauncherAnimatorUpdateListener() { 1988 public void onAnimationUpdate(float a, float b) { 1989 if (b == 0f) { 1990 // an optimization, but not required 1991 return; 1992 } 1993 fastInvalidate(); 1994 if (enableWallpaperEffects) { 1995 setHorizontalWallpaperOffset(a * oldHorizontalWallpaperOffset 1996 + b * newHorizontalWallpaperOffset); 1997 setVerticalWallpaperOffset(a * oldVerticalWallpaperOffset 1998 + b * newVerticalWallpaperOffset); 1999 } 2000 for (int i = 0; i < screenCount; i++) { 2001 final CellLayout cl = (CellLayout) getChildAt(i); 2002 cl.fastInvalidate(); 2003 cl.setFastTranslationX( 2004 a * oldTranslationXs[i] + b * newTranslationXs[i]); 2005 cl.setFastTranslationY( 2006 a * oldTranslationYs[i] + b * newTranslationYs[i]); 2007 cl.setFastScaleX(a * oldScaleXs[i] + b * newScaleXs[i]); 2008 cl.setFastScaleY(a * oldScaleYs[i] + b * newScaleYs[i]); 2009 cl.setFastBackgroundAlpha( 2010 a * oldBackgroundAlphas[i] + b * newBackgroundAlphas[i]); 2011 cl.setBackgroundAlphaMultiplier(a * oldBackgroundAlphaMultipliers[i] + 2012 b * newBackgroundAlphaMultipliers[i]); 2013 cl.setFastAlpha(a * oldAlphas[i] + b * newAlphas[i]); 2014 } 2015 } 2016 }); 2017 2018 ValueAnimator rotationAnim = 2019 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 2020 rotationAnim.setInterpolator(new DecelerateInterpolator(2.0f)); 2021 rotationAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 2022 public void onAnimationUpdate(float a, float b) { 2023 // don't invalidate workspace because we did it above 2024 if (b == 0f) { 2025 // an optimization, but not required 2026 return; 2027 } 2028 for (int i = 0; i < screenCount; i++) { 2029 final CellLayout cl = (CellLayout) getChildAt(i); 2030 cl.setFastRotationY(a * oldRotationYs[i] + b * newRotationYs[i]); 2031 } 2032 } 2033 }); 2034 2035 mAnimator.playTogether(animWithInterpolator, rotationAnim); 2036 // If we call this when we're not animated, onAnimationEnd is never called on 2037 // the listener; make sure we only use the listener when we're actually animating 2038 mAnimator.addListener(mUnshrinkAnimationListener); 2039 mAnimator.start(); 2040 } else { 2041 if (enableWallpaperEffects) { 2042 setHorizontalWallpaperOffset(wallpaperOffsetForCurrentScroll()); 2043 setVerticalWallpaperOffset(0.5f); 2044 updateWallpaperOffsetImmediately(); 2045 } 2046 } 2047 } 2048 2049 if (!springLoaded) { 2050 hideBackgroundGradient(); 2051 } 2052 } 2053 2054 /** 2055 * Draw the View v into the given Canvas. 2056 * 2057 * @param v the view to draw 2058 * @param destCanvas the canvas to draw on 2059 * @param padding the horizontal and vertical padding to use when drawing 2060 */ 2061 private void drawDragView(View v, Canvas destCanvas, int padding) { 2062 final Rect clipRect = mTempRect; 2063 v.getDrawingRect(clipRect); 2064 2065 // For a TextView, adjust the clip rect so that we don't include the text label 2066 if (v instanceof FolderIcon) { 2067 } else if (v instanceof BubbleTextView) { 2068 final BubbleTextView tv = (BubbleTextView) v; 2069 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 2070 tv.getLayout().getLineTop(0); 2071 } else if (v instanceof TextView) { 2072 final TextView tv = (TextView) v; 2073 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 2074 tv.getLayout().getLineTop(0); 2075 } 2076 2077 // Draw the View into the bitmap. 2078 // The translate of scrollX and scrollY is necessary when drawing TextViews, because 2079 // they set scrollX and scrollY to large values to achieve centered text 2080 2081 destCanvas.save(); 2082 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 2083 destCanvas.clipRect(clipRect, Op.REPLACE); 2084 v.draw(destCanvas); 2085 destCanvas.restore(); 2086 } 2087 2088 /** 2089 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2090 * Responsibility for the bitmap is transferred to the caller. 2091 */ 2092 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 2093 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 2094 final Bitmap b = Bitmap.createBitmap( 2095 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 2096 2097 canvas.setBitmap(b); 2098 drawDragView(v, canvas, padding); 2099 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2100 return b; 2101 } 2102 2103 /** 2104 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2105 * Responsibility for the bitmap is transferred to the caller. 2106 */ 2107 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h) { 2108 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 2109 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 2110 canvas.setBitmap(b); 2111 2112 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 2113 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 2114 (h - padding) / (float) orig.getHeight()); 2115 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 2116 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 2117 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 2118 2119 // center the image 2120 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 2121 2122 Paint p = new Paint(); 2123 p.setFilterBitmap(true); 2124 canvas.drawBitmap(orig, src, dst, p); 2125 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2126 2127 return b; 2128 } 2129 2130 /** 2131 * Creates a drag outline to represent a drop (that we don't have the actual information for 2132 * yet). May be changed in the future to alter the drop outline slightly depending on the 2133 * clip description mime data. 2134 */ 2135 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 2136 Resources r = getResources(); 2137 final int outlineColor = r.getColor(R.color.drag_outline_color); 2138 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 2139 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 2140 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 2141 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 2142 final Bitmap b = Bitmap.createBitmap( 2143 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 2144 2145 canvas.setBitmap(b); 2146 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 2147 rectRadius, rectRadius, mExternalDragOutlinePaint); 2148 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2149 return b; 2150 } 2151 2152 /** 2153 * Returns a new bitmap to show when the given View is being dragged around. 2154 * Responsibility for the bitmap is transferred to the caller. 2155 */ 2156 private Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 2157 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 2158 final Bitmap b = Bitmap.createBitmap( 2159 mDragOutline.getWidth(), mDragOutline.getHeight(), Bitmap.Config.ARGB_8888); 2160 2161 canvas.setBitmap(b); 2162 canvas.drawBitmap(mDragOutline, 0, 0, null); 2163 drawDragView(v, canvas, padding); 2164 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 2165 2166 return b; 2167 } 2168 2169 void startDrag(CellLayout.CellInfo cellInfo) { 2170 View child = cellInfo.cell; 2171 2172 // Make sure the drag was started by a long press as opposed to a long click. 2173 if (!child.isInTouchMode()) { 2174 return; 2175 } 2176 2177 mDragInfo = cellInfo; 2178 2179 CellLayout current = (CellLayout) getChildAt(cellInfo.screen); 2180 current.onDragChild(child); 2181 2182 child.clearFocus(); 2183 child.setPressed(false); 2184 2185 final Canvas canvas = new Canvas(); 2186 2187 // We need to add extra padding to the bitmap to make room for the glow effect 2188 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2189 2190 // The outline is used to visualize where the item will land if dropped 2191 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 2192 2193 // The drag bitmap follows the touch point around on the screen 2194 final Bitmap b = createDragBitmap(child, canvas, bitmapPadding); 2195 2196 final int bmpWidth = b.getWidth(); 2197 final int bmpHeight = b.getHeight(); 2198 2199 child.getLocationOnScreen(mTempXY); 2200 final int screenX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 2201 final int screenY = (int) mTempXY[1] + (child.getHeight() - bmpHeight) / 2; 2202 2203 Rect dragRect = null; 2204 if ((child instanceof BubbleTextView) && !(child instanceof FolderIcon)) { 2205 int iconSize = getResources().getDimensionPixelSize(R.dimen.app_icon_size); 2206 int top = child.getPaddingTop(); 2207 int left = (bmpWidth - iconSize) / 2; 2208 int right = left + iconSize; 2209 int bottom = top + iconSize; 2210 dragRect = new Rect(left, top, right, bottom); 2211 } 2212 2213 mLauncher.lockScreenOrientation(); 2214 mDragController.startDrag(b, screenX, screenY, this, child.getTag(), 2215 DragController.DRAG_ACTION_MOVE, dragRect); 2216 b.recycle(); 2217 } 2218 2219 void addApplicationShortcut(ShortcutInfo info, int screen, int cellX, int cellY, 2220 boolean insertAtFirst, int intersectX, int intersectY) { 2221 final CellLayout cellLayout = (CellLayout) getChildAt(screen); 2222 View view = mLauncher.createShortcut(R.layout.application, cellLayout, (ShortcutInfo) info); 2223 2224 final int[] cellXY = new int[2]; 2225 cellLayout.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 2226 addInScreen(view, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 2227 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 2228 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2229 cellXY[0], cellXY[1]); 2230 } 2231 2232 private void setPositionForDropAnimation( 2233 View dragView, int dragViewX, int dragViewY, View parent, View child) { 2234 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 2235 2236 // Based on the position of the drag view, find the top left of the original view 2237 int viewX = dragViewX + (dragView.getWidth() - child.getMeasuredWidth()) / 2; 2238 int viewY = dragViewY + (dragView.getHeight() - child.getMeasuredHeight()) / 2; 2239 2240 CellLayout layout = (CellLayout) parent; 2241 2242 // Set its old pos (in the new parent's coordinates); it will be animated 2243 // in animateViewIntoPosition after the next layout pass 2244 lp.oldX = viewX - (layout.getLeft() + layout.getLeftPadding() - mScrollX); 2245 lp.oldY = viewY - (layout.getTop() + layout.getTopPadding() - mScrollY); 2246 } 2247 2248 public void animateViewIntoPosition(final View view, final int fromX, final int fromY, 2249 final int dX, final int dY, final Runnable animationEndRunnable) { 2250 2251 // Calculate the duration of the animation based on the object's distance 2252 final float dist = (float) Math.sqrt(dX*dX + dY*dY); 2253 final Resources res = getResources(); 2254 final float maxDist = (float) res.getInteger(R.integer.config_dropAnimMaxDist); 2255 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration); 2256 if (dist < maxDist) { 2257 duration *= mQuintEaseOutInterpolator.getInterpolation(dist / maxDist); 2258 } 2259 2260 if (mDropAnim != null) { 2261 mDropAnim.end(); 2262 } 2263 mDropAnim = new ValueAnimator(); 2264 mDropAnim.setInterpolator(mQuintEaseOutInterpolator); 2265 2266 // The view is invisible during the animation; we render it manually. 2267 mDropAnim.addListener(new AnimatorListenerAdapter() { 2268 public void onAnimationStart(Animator animation) { 2269 // Set this here so that we don't render it until the animation begins 2270 mDropView = view; 2271 } 2272 2273 public void onAnimationEnd(Animator animation) { 2274 animationEndRunnable.run(); 2275 } 2276 }); 2277 2278 mDropAnim.setDuration(duration); 2279 mDropAnim.setFloatValues(0.0f, 1.0f); 2280 mDropAnim.removeAllUpdateListeners(); 2281 mDropAnim.addUpdateListener(new AnimatorUpdateListener() { 2282 public void onAnimationUpdate(ValueAnimator animation) { 2283 final float percent = (Float) animation.getAnimatedValue(); 2284 // Invalidate the old position 2285 invalidate(mDropViewPos[0], mDropViewPos[1], 2286 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 2287 2288 mDropViewPos[0] = fromX + (int) (percent * dX + 0.5f); 2289 mDropViewPos[1] = fromY + (int) (percent * dY + 0.5f); 2290 invalidate(mDropViewPos[0], mDropViewPos[1], 2291 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 2292 } 2293 }); 2294 2295 mDropAnim.start(); 2296 } 2297 2298 /* 2299 * We should be careful that this method cannot result in any synchronous requestLayout() 2300 * calls, as it is called from onLayout(). 2301 */ 2302 public void animateViewIntoPosition(final View view) { 2303 final CellLayout parent = (CellLayout) view.getParent().getParent(); 2304 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2305 2306 // Convert the animation params to be relative to the Workspace, not the CellLayout 2307 final int fromX = lp.oldX + parent.getLeft() + parent.getLeftPadding(); 2308 final int fromY = lp.oldY + parent.getTop() + parent.getTopPadding(); 2309 2310 final int dx = lp.x - lp.oldX; 2311 final int dy = lp.y - lp.oldY; 2312 2313 Runnable animationEndRunnable = new Runnable() { 2314 public void run() { 2315 if (mDropView != null) { 2316 mDropView.setVisibility(View.VISIBLE); 2317 mDropView = null; 2318 } 2319 } 2320 }; 2321 animateViewIntoPosition(view, fromX, fromY, dx, dy, animationEndRunnable); 2322 } 2323 2324 /** 2325 * {@inheritDoc} 2326 */ 2327 public boolean acceptDrop(DragObject d) { 2328 2329 // If it's an external drop (e.g. from All Apps), check if it should be accepted 2330 if (d.dragSource != this) { 2331 // Don't accept the drop if we're not over a screen at time of drop 2332 if (mDragTargetLayout == null || !mDragTargetLayout.getAcceptsDrops()) { 2333 return false; 2334 } 2335 2336 final CellLayout.CellInfo dragCellInfo = mDragInfo; 2337 final int spanX = dragCellInfo == null ? 1 : dragCellInfo.spanX; 2338 final int spanY = dragCellInfo == null ? 1 : dragCellInfo.spanY; 2339 2340 final View ignoreView = dragCellInfo == null ? null : dragCellInfo.cell; 2341 2342 // Don't accept the drop if there's no room for the item 2343 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 2344 mLauncher.showOutOfSpaceMessage(); 2345 return false; 2346 } 2347 } 2348 return true; 2349 } 2350 2351 boolean willCreateUserFolder(ItemInfo info, View v, int[] targetCell) { 2352 boolean hasntMoved = mDragInfo != null 2353 && (mDragInfo.cellX == targetCell[0] && mDragInfo.cellY == targetCell[1]); 2354 2355 if (v == null || hasntMoved) return false; 2356 2357 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2358 boolean willBecomeShortcut = 2359 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2360 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2361 2362 return (aboveShortcut && willBecomeShortcut); 2363 } 2364 2365 boolean createUserFolderIfNecessary(View newView, CellLayout target, 2366 int[] targetCell, boolean external) { 2367 View v = target.getChildAt(targetCell[0], targetCell[1]); 2368 boolean hasntMoved = mDragInfo != null 2369 && (mDragInfo.cellX == targetCell[0] && mDragInfo.cellY == targetCell[1]); 2370 2371 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2372 mCreateUserFolderOnDrop = false; 2373 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 2374 2375 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2376 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2377 2378 if (aboveShortcut && willBecomeShortcut) { 2379 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2380 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2381 // if the drag started here, we need to remove it from the workspace 2382 if (!external) { 2383 int fromScreen = mDragInfo.screen; 2384 CellLayout sourceLayout = (CellLayout) getChildAt(fromScreen); 2385 sourceLayout.removeView(newView); 2386 } 2387 2388 target.removeView(v); 2389 FolderIcon fi = mLauncher.addFolder(screen, targetCell[0], targetCell[1]); 2390 destInfo.cellX = -1; 2391 destInfo.cellY = -1; 2392 sourceInfo.cellX = -1; 2393 sourceInfo.cellY = -1; 2394 fi.addItem(destInfo); 2395 fi.addItem(sourceInfo); 2396 return true; 2397 } 2398 return false; 2399 } 2400 2401 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] tagetCell, 2402 Object dragInfo, boolean external) { 2403 View dropOverView = target.getChildAt(tagetCell[0], tagetCell[1]); 2404 if (dropOverView instanceof FolderIcon) { 2405 FolderIcon fi = (FolderIcon) dropOverView; 2406 if (fi.acceptDrop(dragInfo)) { 2407 fi.onDrop(dragInfo); 2408 2409 // if the drag started here, we need to remove it from the workspace 2410 if (!external) { 2411 int fromScreen = mDragInfo.screen; 2412 CellLayout sourceLayout = (CellLayout) getChildAt(fromScreen); 2413 sourceLayout.removeView(newView); 2414 } 2415 return true; 2416 } 2417 } 2418 return false; 2419 } 2420 2421 public void onDrop(DragObject d) { 2422 2423 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2424 mDragViewVisualCenter); 2425 2426 // We want the point to be mapped to the dragTarget. 2427 if (mDragTargetLayout != null) { 2428 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2429 } 2430 2431 // When you are in customization mode and drag to a particular screen, make that the 2432 // new current/default screen, so any subsequent taps add items to that screen 2433 if (!mLauncher.isAllAppsVisible()) { 2434 int dragTargetIndex = indexOfChild(mDragTargetLayout); 2435 if (mCurrentPage != dragTargetIndex && (mIsSmall || mIsInUnshrinkAnimation)) { 2436 scrollToNewPageWithoutMovingPages(dragTargetIndex); 2437 } 2438 } 2439 CellLayout dropTargetLayout = mDragTargetLayout; 2440 2441 if (d.dragSource != this) { 2442 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2443 (int) mDragViewVisualCenter[1] }; 2444 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d.dragView); 2445 } else if (mDragInfo != null) { 2446 final View cell = mDragInfo.cell; 2447 2448 if (dropTargetLayout != null) { 2449 // Move internally 2450 final int screen = (mTargetCell[0] < 0) ? 2451 mDragInfo.screen : indexOfChild(dropTargetLayout); 2452 2453 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2454 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2455 // First we find the cell nearest to point at which the item is 2456 // dropped, without any consideration to whether there is an item there. 2457 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2458 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2459 // If the item being dropped is a shortcut and the nearest drop 2460 // cell also contains a shortcut, then create a folder with the two shortcuts. 2461 boolean dropInscrollArea = mCurrentPage != screen; 2462 2463 if (!dropInscrollArea && createUserFolderIfNecessary(cell, dropTargetLayout, 2464 mTargetCell, false)) { 2465 return; 2466 } 2467 2468 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, 2469 d.dragInfo, false)) { 2470 return; 2471 } 2472 2473 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2474 // we need to find the nearest cell location that is vacant 2475 mTargetCell = findNearestVacantArea((int) mDragViewVisualCenter[0], 2476 (int) mDragViewVisualCenter[1], mDragInfo.spanX, mDragInfo.spanY, cell, 2477 dropTargetLayout, mTargetCell); 2478 2479 if (dropInscrollArea && mShrinkState != ShrinkState.SPRING_LOADED) { 2480 snapToPage(screen); 2481 } 2482 2483 if (mTargetCell[0] >= 0 && mTargetCell[1] >= 0) { 2484 if (screen != mDragInfo.screen) { 2485 // Reparent the view 2486 ((CellLayout) getChildAt(mDragInfo.screen)).removeView(cell); 2487 addInScreen(cell, screen, mTargetCell[0], mTargetCell[1], mDragInfo.spanX, 2488 mDragInfo.spanY); 2489 } 2490 2491 2492 // update the item's position after drop 2493 final ItemInfo info = (ItemInfo) cell.getTag(); 2494 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2495 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 2496 lp.cellX = mTargetCell[0]; 2497 lp.cellY = mTargetCell[1]; 2498 cell.setId(LauncherModel.getCellLayoutChildId(-1, mDragInfo.screen, 2499 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2500 2501 if (cell instanceof LauncherAppWidgetHostView) { 2502 final CellLayout cellLayout = dropTargetLayout; 2503 // We post this call so that the widget has a chance to be placed 2504 // in its final location 2505 2506 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2507 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2508 if (pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2509 final Runnable resizeRunnable = new Runnable() { 2510 public void run() { 2511 DragLayer dragLayer = 2512 (DragLayer) mLauncher.findViewById(R.id.drag_layer); 2513 dragLayer.addResizeFrame(info, hostView, cellLayout); 2514 } 2515 }; 2516 post(new Runnable() { 2517 public void run() { 2518 if (!isPageMoving()) { 2519 resizeRunnable.run(); 2520 } else { 2521 mDelayedResizeRunnable = resizeRunnable; 2522 } 2523 } 2524 }); 2525 } 2526 } 2527 2528 LauncherModel.moveItemInDatabase(mLauncher, info, 2529 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2530 lp.cellX, lp.cellY); 2531 } 2532 } 2533 2534 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2535 2536 int loc[] = new int[2]; 2537 getViewLocationRelativeToSelf(d.dragView, loc); 2538 2539 // Prepare it to be animated into its new position 2540 // This must be called after the view has been re-parented 2541 setPositionForDropAnimation(d.dragView, loc[0], loc[1], parent, cell); 2542 parent.onDropChild(cell, true); 2543 } 2544 } 2545 2546 public void getViewLocationRelativeToSelf(View v, int[] location) { 2547 getLocationOnScreen(location); 2548 int x = location[0]; 2549 int y = location[1]; 2550 2551 v.getLocationOnScreen(location); 2552 int vX = location[0]; 2553 int vY = location[1]; 2554 2555 location[0] = vX - x; 2556 location[1] = vY - y; 2557 } 2558 2559 public void onDragEnter(DragObject d) { 2560 mLastDragOverView = null; 2561 if (mDragTargetLayout != null) { 2562 mDragTargetLayout.onDragExit(); 2563 mDragTargetLayout = null; // Reset the drag state 2564 } 2565 2566 if (!mIsSmall) { 2567 mDragTargetLayout = getCurrentDropLayout(); 2568 mDragTargetLayout.onDragEnter(); 2569 showOutlines(); 2570 } 2571 } 2572 2573 public DropTarget getDropTargetDelegate(DragObject d) { 2574 return null; 2575 } 2576 2577 /** 2578 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 2579 * in the returned structure related to the widgets that match the drop (or a null list if it is 2580 * a shortcut drop). If the drop is not accepted then a null structure is returned. 2581 */ 2582 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 2583 final LauncherModel model = mLauncher.getModel(); 2584 final ClipDescription desc = event.getClipDescription(); 2585 final int mimeTypeCount = desc.getMimeTypeCount(); 2586 for (int i = 0; i < mimeTypeCount; ++i) { 2587 final String mimeType = desc.getMimeType(i); 2588 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 2589 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 2590 } else { 2591 final List<WidgetMimeTypeHandlerData> widgets = 2592 model.resolveWidgetsForMimeType(mContext, mimeType); 2593 if (widgets.size() > 0) { 2594 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 2595 } 2596 } 2597 } 2598 return null; 2599 } 2600 2601 /** 2602 * Global drag and drop handler 2603 */ 2604 @Override 2605 public boolean onDragEvent(DragEvent event) { 2606 final ClipDescription desc = event.getClipDescription(); 2607 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 2608 final int[] pos = new int[2]; 2609 layout.getLocationOnScreen(pos); 2610 // We need to offset the drag coordinates to layout coordinate space 2611 final int x = (int) event.getX() - pos[0]; 2612 final int y = (int) event.getY() - pos[1]; 2613 2614 switch (event.getAction()) { 2615 case DragEvent.ACTION_DRAG_STARTED: { 2616 // Validate this drag 2617 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2618 if (test != null) { 2619 boolean isShortcut = (test.second == null); 2620 if (isShortcut) { 2621 // Check if we have enough space on this screen to add a new shortcut 2622 if (!layout.findCellForSpan(pos, 1, 1)) { 2623 Toast.makeText(mContext, mContext.getString(R.string.out_of_space), 2624 Toast.LENGTH_SHORT).show(); 2625 return false; 2626 } 2627 } 2628 } else { 2629 // Show error message if we couldn't accept any of the items 2630 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 2631 Toast.LENGTH_SHORT).show(); 2632 return false; 2633 } 2634 2635 // Create the drag outline 2636 // We need to add extra padding to the bitmap to make room for the glow effect 2637 final Canvas canvas = new Canvas(); 2638 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2639 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 2640 2641 // Show the current page outlines to indicate that we can accept this drop 2642 showOutlines(); 2643 layout.setIsDragOccuring(true); 2644 layout.onDragEnter(); 2645 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2646 2647 return true; 2648 } 2649 case DragEvent.ACTION_DRAG_LOCATION: 2650 // Visualize the drop location 2651 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2652 return true; 2653 case DragEvent.ACTION_DROP: { 2654 // Try and add any shortcuts 2655 final LauncherModel model = mLauncher.getModel(); 2656 final ClipData data = event.getClipData(); 2657 2658 // We assume that the mime types are ordered in descending importance of 2659 // representation. So we enumerate the list of mime types and alert the 2660 // user if any widgets can handle the drop. Only the most preferred 2661 // representation will be handled. 2662 pos[0] = x; 2663 pos[1] = y; 2664 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2665 if (test != null) { 2666 final int index = test.first; 2667 final List<WidgetMimeTypeHandlerData> widgets = test.second; 2668 final boolean isShortcut = (widgets == null); 2669 final String mimeType = desc.getMimeType(index); 2670 if (isShortcut) { 2671 final Intent intent = data.getItemAt(index).getIntent(); 2672 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 2673 onDropExternal(new int[] { x, y }, info, layout, false); 2674 } else { 2675 if (widgets.size() == 1) { 2676 // If there is only one item, then go ahead and add and configure 2677 // that widget 2678 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 2679 final PendingAddWidgetInfo createInfo = 2680 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 2681 mLauncher.addAppWidgetFromDrop(createInfo, mCurrentPage, pos); 2682 } else { 2683 // Show the widget picker dialog if there is more than one widget 2684 // that can handle this data type 2685 final InstallWidgetReceiver.WidgetListAdapter adapter = 2686 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 2687 data, widgets, layout, mCurrentPage, pos); 2688 final AlertDialog.Builder builder = 2689 new AlertDialog.Builder(mContext); 2690 builder.setAdapter(adapter, adapter); 2691 builder.setCancelable(true); 2692 builder.setTitle(mContext.getString( 2693 R.string.external_drop_widget_pick_title)); 2694 builder.setIcon(R.drawable.ic_no_applications); 2695 builder.show(); 2696 } 2697 } 2698 } 2699 return true; 2700 } 2701 case DragEvent.ACTION_DRAG_ENDED: 2702 // Hide the page outlines after the drop 2703 layout.setIsDragOccuring(false); 2704 layout.onDragExit(); 2705 hideOutlines(); 2706 return true; 2707 } 2708 return super.onDragEvent(event); 2709 } 2710 2711 /* 2712 * 2713 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2714 * coordinate space. The argument xy is modified with the return result. 2715 * 2716 */ 2717 void mapPointFromSelfToChild(View v, float[] xy) { 2718 mapPointFromSelfToChild(v, xy, null); 2719 } 2720 2721 /* 2722 * 2723 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2724 * coordinate space. The argument xy is modified with the return result. 2725 * 2726 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2727 * computing it itself; we use this to avoid redundant matrix inversions in 2728 * findMatchingPageForDragOver 2729 * 2730 */ 2731 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2732 if (cachedInverseMatrix == null) { 2733 v.getMatrix().invert(mTempInverseMatrix); 2734 cachedInverseMatrix = mTempInverseMatrix; 2735 } 2736 xy[0] = xy[0] + mScrollX - v.getLeft(); 2737 xy[1] = xy[1] + mScrollY - v.getTop(); 2738 cachedInverseMatrix.mapPoints(xy); 2739 } 2740 2741 /* 2742 * 2743 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2744 * the parent View's coordinate space. The argument xy is modified with the return result. 2745 * 2746 */ 2747 void mapPointFromChildToSelf(View v, float[] xy) { 2748 v.getMatrix().mapPoints(xy); 2749 xy[0] -= (mScrollX - v.getLeft()); 2750 xy[1] -= (mScrollY - v.getTop()); 2751 } 2752 2753 static private float squaredDistance(float[] point1, float[] point2) { 2754 float distanceX = point1[0] - point2[0]; 2755 float distanceY = point2[1] - point2[1]; 2756 return distanceX * distanceX + distanceY * distanceY; 2757 } 2758 2759 /* 2760 * 2761 * Returns true if the passed CellLayout cl overlaps with dragView 2762 * 2763 */ 2764 boolean overlaps(CellLayout cl, DragView dragView, 2765 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2766 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2767 final float[] draggedItemTopLeft = mTempDragCoordinates; 2768 draggedItemTopLeft[0] = dragViewX; 2769 draggedItemTopLeft[1] = dragViewY; 2770 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2771 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2772 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2773 2774 // Transform the dragged item's top left coordinates 2775 // to the CellLayout's local coordinates 2776 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2777 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2778 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2779 2780 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2781 // Transform the dragged item's bottom right coordinates 2782 // to the CellLayout's local coordinates 2783 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2784 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2785 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2786 2787 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2788 float overlap = (overlapRegionRight - overlapRegionLeft) * 2789 (overlapRegionBottom - overlapRegionTop); 2790 if (overlap > 0) { 2791 return true; 2792 } 2793 } 2794 } 2795 return false; 2796 } 2797 2798 /* 2799 * 2800 * This method returns the CellLayout that is currently being dragged to. In order to drag 2801 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2802 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2803 * 2804 * Return null if no CellLayout is currently being dragged over 2805 * 2806 */ 2807 private CellLayout findMatchingPageForDragOver( 2808 DragView dragView, int originX, int originY, int offsetX, int offsetY) { 2809 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2810 // with the item being dragged and then choose the one that's closest to the touch point 2811 final int screenCount = getChildCount(); 2812 CellLayout bestMatchingScreen = null; 2813 float smallestDistSoFar = Float.MAX_VALUE; 2814 2815 for (int i = 0; i < screenCount; i++) { 2816 CellLayout cl = (CellLayout)getChildAt(i); 2817 2818 final float[] touchXy = mTempTouchCoordinates; 2819 touchXy[0] = originX + offsetX; 2820 touchXy[1] = originY + offsetY; 2821 2822 // Transform the touch coordinates to the CellLayout's local coordinates 2823 // If the touch point is within the bounds of the cell layout, we can return immediately 2824 cl.getMatrix().invert(mTempInverseMatrix); 2825 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2826 2827 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2828 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2829 return cl; 2830 } 2831 2832 if (overlaps(cl, dragView, originX, originY, mTempInverseMatrix)) { 2833 // Get the center of the cell layout in screen coordinates 2834 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2835 cellLayoutCenter[0] = cl.getWidth()/2; 2836 cellLayoutCenter[1] = cl.getHeight()/2; 2837 mapPointFromChildToSelf(cl, cellLayoutCenter); 2838 2839 touchXy[0] = originX + offsetX; 2840 touchXy[1] = originY + offsetY; 2841 2842 // Calculate the distance between the center of the CellLayout 2843 // and the touch point 2844 float dist = squaredDistance(touchXy, cellLayoutCenter); 2845 2846 if (dist < smallestDistSoFar) { 2847 smallestDistSoFar = dist; 2848 bestMatchingScreen = cl; 2849 } 2850 } 2851 } 2852 return bestMatchingScreen; 2853 } 2854 2855 // This is used to compute the visual center of the dragView. This point is then 2856 // used to visualize drop locations and determine where to drop an item. The idea is that 2857 // the visual center represents the user's interpretation of where the item is, and hence 2858 // is the appropriate point to use when determining drop location. 2859 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2860 DragView dragView, float[] recycle) { 2861 float res[]; 2862 if (recycle == null) { 2863 res = new float[2]; 2864 } else { 2865 res = recycle; 2866 } 2867 2868 // First off, the drag view has been shifted in a way that is not represented in the 2869 // x and y values or the x/yOffsets. Here we account for that shift. 2870 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2871 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2872 2873 // These represent the visual top and left of drag view if a dragRect was provided. 2874 // If a dragRect was not provided, then they correspond to the actual view left and 2875 // top, as the dragRect is in that case taken to be the entire dragView. 2876 // R.dimen.dragViewOffsetY. 2877 int left = x - xOffset; 2878 int top = y - yOffset; 2879 2880 // In order to find the visual center, we shift by half the dragRect 2881 res[0] = left + dragView.getDragRegion().width() / 2; 2882 res[1] = top + dragView.getDragRegion().height() / 2; 2883 2884 return res; 2885 } 2886 2887 public void onDragOver(DragObject d) { 2888 // When touch is inside the scroll area, skip dragOver actions for the current screen 2889 if (!mInScrollArea) { 2890 CellLayout layout; 2891 int left = d.x - d.xOffset; 2892 int top = d.y - d.yOffset; 2893 2894 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2895 d.dragView, mDragViewVisualCenter); 2896 2897 boolean shrunken = mIsSmall || mIsInUnshrinkAnimation; 2898 if (shrunken) { 2899 mLastDragView = d.dragView; 2900 mLastDragOriginX = left; 2901 mLastDragOriginY = top; 2902 mLastDragXOffset = d.xOffset; 2903 mLastDragYOffset = d.yOffset; 2904 layout = findMatchingPageForDragOver(d.dragView, left, top, d.xOffset, d.yOffset); 2905 2906 if (layout != null && layout != mDragTargetLayout) { 2907 if (mDragTargetLayout != null) { 2908 mDragTargetLayout.setIsDragOverlapping(false); 2909 mDragTargetLayout.clearDragOutlines(); 2910 } 2911 mDragTargetLayout = layout; 2912 2913 // In spring-loaded mode, we still want the user to be able to hover over a 2914 // full screen (which is traditionally set to not accept drops) if they want 2915 // to get to pages beyond the screen that is full. 2916 boolean isInSpringLoadedMode = (mShrinkState == ShrinkState.SPRING_LOADED); 2917 boolean allowDragOver = (mDragTargetLayout != null) && 2918 (mDragTargetLayout.getAcceptsDrops() || isInSpringLoadedMode); 2919 if (allowDragOver) { 2920 if (isInSpringLoadedMode) { 2921 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2922 } 2923 mDragTargetLayout.setIsDragOverlapping(true); 2924 } 2925 } 2926 } else { 2927 layout = getCurrentDropLayout(); 2928 if (layout != mDragTargetLayout) { 2929 if (mDragTargetLayout != null) { 2930 mDragTargetLayout.onDragExit(); 2931 } 2932 layout.onDragEnter(); 2933 mDragTargetLayout = layout; 2934 } 2935 } 2936 if (!shrunken || mShrinkState == ShrinkState.SPRING_LOADED) { 2937 layout = getCurrentDropLayout(); 2938 2939 final ItemInfo item = (ItemInfo) d.dragInfo; 2940 if (d.dragInfo instanceof LauncherAppWidgetInfo) { 2941 LauncherAppWidgetInfo widgetInfo = (LauncherAppWidgetInfo) d.dragInfo; 2942 2943 if (widgetInfo.spanX == -1) { 2944 // Calculate the grid spans needed to fit this widget 2945 int[] spans = layout.rectToCell(widgetInfo.minWidth, 2946 widgetInfo.minHeight, null); 2947 item.spanX = spans[0]; 2948 item.spanY = spans[1]; 2949 } 2950 } 2951 2952 if (mDragTargetLayout != null) { 2953 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2954 // We want the point to be mapped to the dragTarget. 2955 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2956 ItemInfo info = (ItemInfo) d.dragInfo; 2957 2958 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2959 (int) mDragViewVisualCenter[1], 1, 1, mDragTargetLayout, mTargetCell); 2960 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2961 mTargetCell[1]); 2962 2963 boolean userFolderPending = willCreateUserFolder(info, dragOverView, 2964 mTargetCell); 2965 boolean isOverFolder = dragOverView instanceof FolderIcon; 2966 if (dragOverView != mLastDragOverView) { 2967 cancelFolderCreation(); 2968 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2969 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2970 } 2971 } 2972 2973 if (userFolderPending && dragOverView != mLastDragOverView) { 2974 mFolderCreationAlarm.setOnAlarmListener(new 2975 FolderCreationAlarmListener(dragOverView)); 2976 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2977 } 2978 2979 if (dragOverView != mLastDragOverView && isOverFolder) { 2980 2981 ((FolderIcon) dragOverView).onDragEnter(d.dragInfo); 2982 if (mDragTargetLayout != null) { 2983 mDragTargetLayout.clearDragOutlines(); 2984 } 2985 } 2986 mLastDragOverView = dragOverView; 2987 2988 if (!mCreateUserFolderOnDrop && !isOverFolder) { 2989 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2990 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2991 item.spanX, item.spanY); 2992 } 2993 } 2994 } 2995 } 2996 } 2997 2998 private void cancelFolderCreation() { 2999 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 3000 mDragFolderRingAnimator.animateToNaturalState(); 3001 } 3002 mCreateUserFolderOnDrop = false; 3003 mFolderCreationAlarm.cancelAlarm(); 3004 } 3005 3006 class FolderCreationAlarmListener implements OnAlarmListener { 3007 View v; 3008 3009 public FolderCreationAlarmListener(View v) { 3010 this.v = v; 3011 } 3012 3013 public void onAlarm(Alarm alarm) { 3014 int tvLocation[] = new int[2]; 3015 int wsLocation[] = new int[2]; 3016 v.getLocationInWindow(tvLocation); 3017 getLocationInWindow(wsLocation); 3018 3019 if (mCellWidth < 0 || mCellHeight < 0 && mDragTargetLayout != null) { 3020 mCellWidth = mDragTargetLayout.getCellWidth(); 3021 mCellHeight = mDragTargetLayout.getCellHeight(); 3022 } 3023 3024 int x = tvLocation[0] - wsLocation[0] + v.getMeasuredWidth() / 2; 3025 int y = tvLocation[1] - wsLocation[1] + FolderRingAnimator.sPreviewSize / 2; 3026 3027 if (mDragFolderRingAnimator == null) { 3028 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 3029 } 3030 mDragFolderRingAnimator.setLocation(x, y); 3031 mDragFolderRingAnimator.animateToAcceptState(); 3032 showFolderAccept(mDragFolderRingAnimator); 3033 mCreateUserFolderOnDrop = true; 3034 if (mDragTargetLayout != null) { 3035 mDragTargetLayout.clearDragOutlines(); 3036 } 3037 } 3038 } 3039 3040 private void doDragExit(DragObject d) { 3041 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 3042 mDragFolderRingAnimator.animateToNaturalState(); 3043 } 3044 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 3045 if (d != null) { 3046 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 3047 } 3048 } 3049 mFolderCreationAlarm.cancelAlarm(); 3050 3051 if (mDragTargetLayout != null) { 3052 mDragTargetLayout.onDragExit(); 3053 } 3054 if (!mIsPageMoving) { 3055 hideOutlines(); 3056 } 3057 clearAllHovers(); 3058 } 3059 3060 public void onDragExit(DragObject d) { 3061 doDragExit(d); 3062 } 3063 3064 @Override 3065 public void getHitRect(Rect outRect) { 3066 // We want the workspace to have the whole area of the display (it will find the correct 3067 // cell layout to drop to in the existing drag/drop logic. 3068 final Display d = mLauncher.getWindowManager().getDefaultDisplay(); 3069 outRect.set(0, 0, d.getWidth(), d.getHeight()); 3070 } 3071 3072 /** 3073 * Add the item specified by dragInfo to the given layout. 3074 * @return true if successful 3075 */ 3076 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 3077 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 3078 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 3079 return true; 3080 } 3081 mLauncher.showOutOfSpaceMessage(); 3082 return false; 3083 } 3084 3085 private void onDropExternal(int[] touchXY, Object dragInfo, 3086 CellLayout cellLayout, boolean insertAtFirst) { 3087 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 3088 } 3089 3090 /** 3091 * Drop an item that didn't originate on one of the workspace screens. 3092 * It may have come from Launcher (e.g. from all apps or customize), or it may have 3093 * come from another app altogether. 3094 * 3095 * NOTE: This can also be called when we are outside of a drag event, when we want 3096 * to add an item to one of the workspace screens. 3097 */ 3098 private void onDropExternal(int[] touchXY, Object dragInfo, 3099 CellLayout cellLayout, boolean insertAtFirst, DragView dragView) { 3100 int screen = indexOfChild(cellLayout); 3101 if (screen != mCurrentPage && mShrinkState != ShrinkState.SPRING_LOADED) { 3102 snapToPage(screen); 3103 } 3104 if (dragInfo instanceof PendingAddItemInfo) { 3105 PendingAddItemInfo info = (PendingAddItemInfo) dragInfo; 3106 // When dragging and dropping from customization tray, we deal with creating 3107 // widgets/shortcuts/folders in a slightly different way 3108 switch (info.itemType) { 3109 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 3110 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) info, screen, touchXY); 3111 break; 3112 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3113 mLauncher.processShortcutFromDrop(info.componentName, screen, touchXY); 3114 break; 3115 default: 3116 throw new IllegalStateException("Unknown item type: " + info.itemType); 3117 } 3118 cellLayout.onDragExit(); 3119 } else { 3120 // This is for other drag/drop cases, like dragging from All Apps 3121 ItemInfo info = (ItemInfo) dragInfo; 3122 View view = null; 3123 3124 switch (info.itemType) { 3125 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 3126 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3127 if (info.container == NO_ID && info instanceof ApplicationInfo) { 3128 // Came from all apps -- make a copy 3129 info = new ShortcutInfo((ApplicationInfo) info); 3130 } 3131 view = mLauncher.createShortcut(R.layout.application, cellLayout, 3132 (ShortcutInfo) info); 3133 break; 3134 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 3135 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 3136 (FolderInfo) info, mIconCache); 3137 break; 3138 default: 3139 throw new IllegalStateException("Unknown item type: " + info.itemType); 3140 } 3141 3142 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 3143 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 3144 // First we find the cell nearest to point at which the item is 3145 // dropped, without any consideration to whether there is an item there. 3146 if (touchXY != null) { 3147 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3148 cellLayout, mTargetCell); 3149 if (createUserFolderIfNecessary(view, cellLayout, mTargetCell, true)) { 3150 return; 3151 } 3152 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, dragInfo, true)) { 3153 return; 3154 } 3155 } 3156 3157 if (touchXY != null) { 3158 // when dragging and dropping, just find the closest free spot 3159 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], 1, 1, null, 3160 cellLayout, mTargetCell); 3161 } else { 3162 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3163 } 3164 addInScreen(view, indexOfChild(cellLayout), mTargetCell[0], 3165 mTargetCell[1], info.spanX, info.spanY, insertAtFirst); 3166 cellLayout.onDropChild(view, false); 3167 cellLayout.animateDrop(); 3168 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 3169 cellLayout.getChildrenLayout().measureChild(view); 3170 3171 if (dragView != null) { 3172 // we have the visual center of the drag view, we need to find the actual 3173 // left and top of the dragView. 3174 int loc[] = new int[2]; 3175 getViewLocationRelativeToSelf(dragView, loc); 3176 setPositionForDropAnimation(dragView, loc[0], loc[1], cellLayout, view); 3177 } 3178 3179 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 3180 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 3181 lp.cellX, lp.cellY); 3182 } 3183 } 3184 3185 /** 3186 * Return the current {@link CellLayout}, correctly picking the destination 3187 * screen while a scroll is in progress. 3188 */ 3189 public CellLayout getCurrentDropLayout() { 3190 return (CellLayout) getChildAt(mNextPage == INVALID_PAGE ? mCurrentPage : mNextPage); 3191 } 3192 3193 /** 3194 * Return the current CellInfo describing our current drag; this method exists 3195 * so that Launcher can sync this object with the correct info when the activity is created/ 3196 * destroyed 3197 * 3198 */ 3199 public CellLayout.CellInfo getDragInfo() { 3200 return mDragInfo; 3201 } 3202 3203 /** 3204 * Calculate the nearest cell where the given object would be dropped. 3205 * 3206 * pixelX and pixelY should be in the coordinate system of layout 3207 */ 3208 private int[] findNearestVacantArea(int pixelX, int pixelY, 3209 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 3210 return layout.findNearestVacantArea( 3211 pixelX, pixelY, spanX, spanY, ignoreView, recycle); 3212 } 3213 3214 /** 3215 * Calculate the nearest cell where the given object would be dropped. 3216 * 3217 * pixelX and pixelY should be in the coordinate system of layout 3218 */ 3219 private int[] findNearestArea(int pixelX, int pixelY, 3220 int spanX, int spanY, CellLayout layout, int[] recycle) { 3221 return layout.findNearestArea( 3222 pixelX, pixelY, spanX, spanY, recycle); 3223 } 3224 3225 void setup(Launcher launcher, DragController dragController) { 3226 mLauncher = launcher; 3227 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3228 mDragController = dragController; 3229 } 3230 3231 /** 3232 * Called at the end of a drag which originated on the workspace. 3233 */ 3234 public void onDropCompleted(View target, DragObject d, boolean success) { 3235 if (success) { 3236 if (target != this && mDragInfo != null) { 3237 final CellLayout cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3238 cellLayout.removeView(mDragInfo.cell); 3239 if (mDragInfo.cell instanceof DropTarget) { 3240 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 3241 } 3242 // final Object tag = mDragInfo.cell.getTag(); 3243 } 3244 } else if (mDragInfo != null) { 3245 // NOTE: When 'success' is true, onDragExit is called by the DragController before 3246 // calling onDropCompleted(). We call it ourselves here, but maybe this should be 3247 // moved into DragController.cancelDrag(). 3248 doDragExit(null); 3249 ((CellLayout) getChildAt(mDragInfo.screen)).onDropChild(mDragInfo.cell, false); 3250 } 3251 mLauncher.unlockScreenOrientation(); 3252 mDragOutline = null; 3253 mDragInfo = null; 3254 } 3255 3256 @Override 3257 public void onDragViewVisible() { 3258 ((View) mDragInfo.cell).setVisibility(View.GONE); 3259 } 3260 3261 public boolean isDropEnabled() { 3262 return true; 3263 } 3264 3265 @Override 3266 protected void onRestoreInstanceState(Parcelable state) { 3267 super.onRestoreInstanceState(state); 3268 Launcher.setScreen(mCurrentPage); 3269 } 3270 3271 @Override 3272 public void scrollLeft() { 3273 if (!mIsSmall && !mIsInUnshrinkAnimation) { 3274 super.scrollLeft(); 3275 } 3276 } 3277 3278 @Override 3279 public void scrollRight() { 3280 if (!mIsSmall && !mIsInUnshrinkAnimation) { 3281 super.scrollRight(); 3282 } 3283 } 3284 3285 @Override 3286 public void onEnterScrollArea(int direction) { 3287 if (!mIsSmall && !mIsInUnshrinkAnimation) { 3288 mInScrollArea = true; 3289 mPendingScrollDirection = direction; 3290 3291 final int page = mCurrentPage + (direction == DragController.SCROLL_LEFT ? -1 : 1); 3292 final CellLayout layout = (CellLayout) getChildAt(page); 3293 cancelFolderCreation(); 3294 3295 if (layout != null) { 3296 layout.setIsDragOverlapping(true); 3297 3298 if (mDragTargetLayout != null) { 3299 mDragTargetLayout.onDragExit(); 3300 mDragTargetLayout = layout; 3301 } 3302 // In portrait, need to redraw the edge glow when entering the scroll area 3303 if (getHeight() > getWidth()) { 3304 invalidate(); 3305 } 3306 } 3307 } 3308 } 3309 3310 private void clearAllHovers() { 3311 final int childCount = getChildCount(); 3312 for (int i = 0; i < childCount; i++) { 3313 ((CellLayout) getChildAt(i)).setIsDragOverlapping(false); 3314 } 3315 3316 // In portrait, workspace is responsible for drawing the edge glow on adjacent pages, 3317 // so we need to redraw the workspace when this may have changed. 3318 if (getHeight() > getWidth()) { 3319 invalidate(); 3320 } 3321 } 3322 3323 @Override 3324 public void onExitScrollArea() { 3325 if (mInScrollArea) { 3326 mInScrollArea = false; 3327 mPendingScrollDirection = DragController.SCROLL_NONE; 3328 clearAllHovers(); 3329 } 3330 } 3331 3332 public Folder getFolderForTag(Object tag) { 3333 final int screenCount = getChildCount(); 3334 for (int screen = 0; screen < screenCount; screen++) { 3335 ViewGroup currentScreen = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 3336 int count = currentScreen.getChildCount(); 3337 for (int i = 0; i < count; i++) { 3338 View child = currentScreen.getChildAt(i); 3339 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 3340 if (lp.cellHSpan == 4 && lp.cellVSpan == 4 && child instanceof Folder) { 3341 Folder f = (Folder) child; 3342 if (f.getInfo() == tag && f.getInfo().opened) { 3343 return f; 3344 } 3345 } 3346 } 3347 } 3348 return null; 3349 } 3350 3351 public View getViewForTag(Object tag) { 3352 int screenCount = getChildCount(); 3353 for (int screen = 0; screen < screenCount; screen++) { 3354 ViewGroup currentScreen = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 3355 int count = currentScreen.getChildCount(); 3356 for (int i = 0; i < count; i++) { 3357 View child = currentScreen.getChildAt(i); 3358 if (child.getTag() == tag) { 3359 return child; 3360 } 3361 } 3362 } 3363 return null; 3364 } 3365 3366 void clearDropTargets() { 3367 final int screenCount = getChildCount(); 3368 3369 for (int i = 0; i < screenCount; i++) { 3370 final CellLayout layoutParent = (CellLayout) getChildAt(i); 3371 final ViewGroup layout = layoutParent.getChildrenLayout(); 3372 int childCount = layout.getChildCount(); 3373 for (int j = 0; j < childCount; j++) { 3374 View v = layout.getChildAt(j); 3375 if (v instanceof DropTarget) { 3376 mDragController.removeDropTarget((DropTarget) v); 3377 } 3378 } 3379 } 3380 } 3381 3382 void removeItems(final ArrayList<ApplicationInfo> apps) { 3383 final int screenCount = getChildCount(); 3384 final PackageManager manager = getContext().getPackageManager(); 3385 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3386 3387 final HashSet<String> packageNames = new HashSet<String>(); 3388 final int appCount = apps.size(); 3389 for (int i = 0; i < appCount; i++) { 3390 packageNames.add(apps.get(i).componentName.getPackageName()); 3391 } 3392 3393 for (int i = 0; i < screenCount; i++) { 3394 final CellLayout layoutParent = (CellLayout) getChildAt(i); 3395 final ViewGroup layout = layoutParent.getChildrenLayout(); 3396 3397 // Avoid ANRs by treating each screen separately 3398 post(new Runnable() { 3399 public void run() { 3400 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3401 childrenToRemove.clear(); 3402 3403 int childCount = layout.getChildCount(); 3404 for (int j = 0; j < childCount; j++) { 3405 final View view = layout.getChildAt(j); 3406 Object tag = view.getTag(); 3407 3408 if (tag instanceof ShortcutInfo) { 3409 final ShortcutInfo info = (ShortcutInfo) tag; 3410 final Intent intent = info.intent; 3411 final ComponentName name = intent.getComponent(); 3412 3413 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3414 for (String packageName: packageNames) { 3415 if (packageName.equals(name.getPackageName())) { 3416 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3417 childrenToRemove.add(view); 3418 } 3419 } 3420 } 3421 } else if (tag instanceof FolderInfo) { 3422 final FolderInfo info = (FolderInfo) tag; 3423 final ArrayList<ShortcutInfo> contents = info.contents; 3424 final ArrayList<ShortcutInfo> toRemove = new ArrayList<ShortcutInfo>(1); 3425 final int contentsCount = contents.size(); 3426 boolean removedFromFolder = false; 3427 3428 for (int k = 0; k < contentsCount; k++) { 3429 final ShortcutInfo appInfo = contents.get(k); 3430 final Intent intent = appInfo.intent; 3431 final ComponentName name = intent.getComponent(); 3432 3433 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3434 for (String packageName: packageNames) { 3435 if (packageName.equals(name.getPackageName())) { 3436 toRemove.add(appInfo); 3437 LauncherModel.deleteItemFromDatabase(mLauncher, appInfo); 3438 removedFromFolder = true; 3439 } 3440 } 3441 } 3442 } 3443 3444 contents.removeAll(toRemove); 3445 if (removedFromFolder) { 3446 final Folder folder = getOpenFolder(); 3447 if (folder != null) 3448 folder.notifyDataSetChanged(); 3449 } 3450 } else if (tag instanceof LauncherAppWidgetInfo) { 3451 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3452 final AppWidgetProviderInfo provider = 3453 widgets.getAppWidgetInfo(info.appWidgetId); 3454 if (provider != null) { 3455 for (String packageName: packageNames) { 3456 if (packageName.equals(provider.provider.getPackageName())) { 3457 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3458 childrenToRemove.add(view); 3459 } 3460 } 3461 } 3462 } 3463 } 3464 3465 childCount = childrenToRemove.size(); 3466 for (int j = 0; j < childCount; j++) { 3467 View child = childrenToRemove.get(j); 3468 // Note: We can not remove the view directly from CellLayoutChildren as this 3469 // does not re-mark the spaces as unoccupied. 3470 layoutParent.removeViewInLayout(child); 3471 if (child instanceof DropTarget) { 3472 mDragController.removeDropTarget((DropTarget)child); 3473 } 3474 } 3475 3476 if (childCount > 0) { 3477 layout.requestLayout(); 3478 layout.invalidate(); 3479 } 3480 } 3481 }); 3482 } 3483 } 3484 3485 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3486 final int screenCount = getChildCount(); 3487 for (int i = 0; i < screenCount; i++) { 3488 final ViewGroup layout = ((CellLayout) getChildAt(i)).getChildrenLayout(); 3489 int childCount = layout.getChildCount(); 3490 for (int j = 0; j < childCount; j++) { 3491 final View view = layout.getChildAt(j); 3492 Object tag = view.getTag(); 3493 if (tag instanceof ShortcutInfo) { 3494 ShortcutInfo info = (ShortcutInfo)tag; 3495 // We need to check for ACTION_MAIN otherwise getComponent() might 3496 // return null for some shortcuts (for instance, for shortcuts to 3497 // web pages.) 3498 final Intent intent = info.intent; 3499 final ComponentName name = intent.getComponent(); 3500 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3501 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3502 final int appCount = apps.size(); 3503 for (int k = 0; k < appCount; k++) { 3504 ApplicationInfo app = apps.get(k); 3505 if (app.componentName.equals(name)) { 3506 info.setIcon(mIconCache.getIcon(info.intent)); 3507 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 3508 new FastBitmapDrawable(info.getIcon(mIconCache)), 3509 null, null); 3510 } 3511 } 3512 } 3513 } 3514 } 3515 } 3516 } 3517 3518 void moveToDefaultScreen(boolean animate) { 3519 if (mIsSmall || mIsInUnshrinkAnimation) { 3520 mLauncher.showWorkspace(animate, (CellLayout)getChildAt(mDefaultPage)); 3521 } else if (animate) { 3522 snapToPage(mDefaultPage); 3523 } else { 3524 setCurrentPage(mDefaultPage); 3525 } 3526 getChildAt(mDefaultPage).requestFocus(); 3527 } 3528 3529 void setIndicators(Drawable previous, Drawable next) { 3530 mPreviousIndicator = previous; 3531 mNextIndicator = next; 3532 previous.setLevel(mCurrentPage); 3533 next.setLevel(mCurrentPage); 3534 } 3535 3536 @Override 3537 public void syncPages() { 3538 } 3539 3540 @Override 3541 public void syncPageItems(int page) { 3542 } 3543} 3544