Workspace.java revision 4b825dcd5f64a5ebb60271844fbc5257374422bc
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 DisplayMetrics displayMetrics = new DisplayMetrics(); 739 display.getRealMetrics(displayMetrics); 740 final int maxDim = Math.max(displayMetrics.widthPixels, displayMetrics.heightPixels); 741 final int minDim = Math.min(displayMetrics.widthPixels, displayMetrics.heightPixels); 742 743 // We need to ensure that there is enough extra space in the wallpaper for the intended 744 // parallax effects 745 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 746 mWallpaperHeight = (int)(maxDim * wallpaperTravelToScreenHeightRatio(maxDim, minDim)); 747 new Thread("setWallpaperDimension") { 748 public void run() { 749 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 750 } 751 }.start(); 752 } 753 754 public void setVerticalWallpaperOffset(float offset) { 755 mWallpaperOffset.setFinalY(offset); 756 } 757 public float getVerticalWallpaperOffset() { 758 return mWallpaperOffset.getCurrY(); 759 } 760 public void setHorizontalWallpaperOffset(float offset) { 761 mWallpaperOffset.setFinalX(offset); 762 } 763 public float getHorizontalWallpaperOffset() { 764 return mWallpaperOffset.getCurrX(); 765 } 766 767 private float wallpaperOffsetForCurrentScroll() { 768 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 769 final boolean isStaticWallpaper = (mWallpaperManager.getWallpaperInfo() == null); 770 // The wallpaper travel width is how far, from left to right, the wallpaper will move 771 // at this orientation (for example, in portrait mode we don't move all the way to the 772 // edges of the wallpaper, or otherwise the parallax effect would be too strong) 773 int wallpaperTravelWidth = (int) (display.getWidth() * 774 wallpaperTravelToScreenWidthRatio(display.getWidth(), display.getHeight())); 775 if (!isStaticWallpaper) { 776 wallpaperTravelWidth = mWallpaperWidth; 777 } 778 779 // Set wallpaper offset steps (1 / (number of screens - 1)) 780 // We have 3 vertical offset states (centered, and then top/bottom aligned 781 // for all apps/customize) 782 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f / (3 - 1)); 783 784 int scrollRange = getScrollRange(); 785 float scrollProgressOffset = 0; 786 787 // Account for overscroll: you only see the absolute edge of the wallpaper if 788 // you overscroll as far as you can in landscape mode. Only do this for static wallpapers 789 // because live wallpapers (and probably 3rd party wallpaper providers) rely on the offset 790 // being even intervals from 0 to 1 (eg [0, 0.25, 0.5, 0.75, 1]) 791 if (isStaticWallpaper) { 792 int overscrollOffset = (int) (maxOverScroll() * display.getWidth()); 793 scrollProgressOffset += overscrollOffset / (float) getScrollRange(); 794 scrollRange += 2 * overscrollOffset; 795 } 796 797 float scrollProgress = 798 mScrollX / (float) scrollRange + scrollProgressOffset; 799 float offsetInDips = wallpaperTravelWidth * scrollProgress + 800 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 801 float offset = offsetInDips / (float) mWallpaperWidth; 802 return offset; 803 } 804 private void syncWallpaperOffsetWithScroll() { 805 final boolean enableWallpaperEffects = isHardwareAccelerated(); 806 if (enableWallpaperEffects) { 807 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 808 } 809 } 810 811 public void updateWallpaperOffsetImmediately() { 812 mUpdateWallpaperOffsetImmediately = true; 813 } 814 815 private void updateWallpaperOffsets() { 816 boolean updateNow = false; 817 boolean keepUpdating = true; 818 if (mUpdateWallpaperOffsetImmediately) { 819 updateNow = true; 820 keepUpdating = false; 821 mWallpaperOffset.jumpToFinal(); 822 mUpdateWallpaperOffsetImmediately = false; 823 } else { 824 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 825 } 826 if (updateNow) { 827 if (mWindowToken != null) { 828 mWallpaperManager.setWallpaperOffsets(mWindowToken, 829 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 830 } 831 } 832 if (keepUpdating) { 833 fastInvalidate(); 834 } 835 } 836 837 class WallpaperOffsetInterpolator { 838 float mFinalHorizontalWallpaperOffset = 0.0f; 839 float mFinalVerticalWallpaperOffset = 0.5f; 840 float mHorizontalWallpaperOffset = 0.0f; 841 float mVerticalWallpaperOffset = 0.5f; 842 long mLastWallpaperOffsetUpdateTime; 843 boolean mIsMovingFast; 844 boolean mOverrideHorizontalCatchupConstant; 845 float mHorizontalCatchupConstant = 0.35f; 846 float mVerticalCatchupConstant = 0.35f; 847 848 public WallpaperOffsetInterpolator() { 849 } 850 851 public void setOverrideHorizontalCatchupConstant(boolean override) { 852 mOverrideHorizontalCatchupConstant = override; 853 } 854 855 public void setHorizontalCatchupConstant(float f) { 856 mHorizontalCatchupConstant = f; 857 } 858 859 public void setVerticalCatchupConstant(float f) { 860 mVerticalCatchupConstant = f; 861 } 862 863 public boolean computeScrollOffset() { 864 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 865 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 866 mIsMovingFast = false; 867 return false; 868 } 869 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 870 boolean isLandscape = display.getWidth() > display.getHeight(); 871 872 long currentTime = System.currentTimeMillis(); 873 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 874 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 875 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 876 877 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 878 if (!mIsMovingFast && xdiff > 0.07) { 879 mIsMovingFast = true; 880 } 881 882 float fractionToCatchUpIn1MsHorizontal; 883 if (mOverrideHorizontalCatchupConstant) { 884 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 885 } else if (mIsMovingFast) { 886 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 887 } else { 888 // slow 889 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 890 } 891 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 892 893 fractionToCatchUpIn1MsHorizontal /= 33f; 894 fractionToCatchUpIn1MsVertical /= 33f; 895 896 final float UPDATE_THRESHOLD = 0.00001f; 897 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 898 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 899 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 900 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 901 if (jumpToFinalValue) { 902 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 903 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 904 } else { 905 float percentToCatchUpVertical = 906 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 907 float percentToCatchUpHorizontal = 908 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 909 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 910 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 911 } 912 913 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 914 return true; 915 } 916 917 public float getCurrX() { 918 return mHorizontalWallpaperOffset; 919 } 920 921 public float getFinalX() { 922 return mFinalHorizontalWallpaperOffset; 923 } 924 925 public float getCurrY() { 926 return mVerticalWallpaperOffset; 927 } 928 929 public float getFinalY() { 930 return mFinalVerticalWallpaperOffset; 931 } 932 933 public void setFinalX(float x) { 934 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 935 } 936 937 public void setFinalY(float y) { 938 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 939 } 940 941 public void jumpToFinal() { 942 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 943 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 944 } 945 } 946 947 @Override 948 public void computeScroll() { 949 super.computeScroll(); 950 if (mSyncWallpaperOffsetWithScroll) { 951 syncWallpaperOffsetWithScroll(); 952 } 953 } 954 955 void showOutlines() { 956 if (!mIsSmall && !mIsInUnshrinkAnimation) { 957 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 958 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 959 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 960 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 961 mChildrenOutlineFadeInAnimation.start(); 962 } 963 } 964 965 void hideOutlines() { 966 if (!mIsSmall && !mIsInUnshrinkAnimation) { 967 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 968 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 969 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 970 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 971 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 972 mChildrenOutlineFadeOutAnimation.start(); 973 } 974 } 975 976 public void showOutlinesTemporarily() { 977 if (!mIsPageMoving && !isTouchActive()) { 978 snapToPage(mCurrentPage); 979 } 980 } 981 982 public void setChildrenOutlineAlpha(float alpha) { 983 mChildrenOutlineAlpha = alpha; 984 for (int i = 0; i < getChildCount(); i++) { 985 CellLayout cl = (CellLayout) getChildAt(i); 986 cl.setBackgroundAlpha(alpha); 987 } 988 } 989 990 public float getChildrenOutlineAlpha() { 991 return mChildrenOutlineAlpha; 992 } 993 994 void disableBackground() { 995 mDrawBackground = false; 996 } 997 void enableBackground() { 998 mDrawBackground = true; 999 } 1000 1001 private void showBackgroundGradientForAllApps() { 1002 showBackgroundGradient(); 1003 } 1004 1005 private void showBackgroundGradient() { 1006 if (mBackground == null) return; 1007 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 1008 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 1009 mBackgroundFadeInAnimation = ValueAnimator.ofFloat(getBackgroundAlpha(), 1f); 1010 mBackgroundFadeInAnimation.addUpdateListener(new AnimatorUpdateListener() { 1011 public void onAnimationUpdate(ValueAnimator animation) { 1012 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1013 } 1014 }); 1015 mBackgroundFadeInAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1016 mBackgroundFadeInAnimation.setDuration(BACKGROUND_FADE_IN_DURATION); 1017 mBackgroundFadeInAnimation.start(); 1018 } 1019 1020 private void hideBackgroundGradient() { 1021 if (mBackground == null) return; 1022 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 1023 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 1024 mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(getBackgroundAlpha(), 0f); 1025 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1026 public void onAnimationUpdate(ValueAnimator animation) { 1027 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1028 } 1029 }); 1030 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1031 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1032 mBackgroundFadeOutAnimation.start(); 1033 } 1034 1035 public void setBackgroundAlpha(float alpha) { 1036 if (alpha != mBackgroundAlpha) { 1037 mBackgroundAlpha = alpha; 1038 invalidate(); 1039 } 1040 } 1041 1042 public float getBackgroundAlpha() { 1043 return mBackgroundAlpha; 1044 } 1045 1046 /** 1047 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 1048 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 1049 * as being larger. This method computes what offset the rotated view should be translated 1050 * in order to minimize this perceived gap. 1051 * @param degrees Angle of the view 1052 * @param width Width of the view 1053 * @param height Height of the view 1054 * @return Offset to be used in a View.setTranslationX() call 1055 */ 1056 private float getOffsetXForRotation(float degrees, int width, int height) { 1057 mMatrix.reset(); 1058 mCamera.save(); 1059 mCamera.rotateY(Math.abs(degrees)); 1060 mCamera.getMatrix(mMatrix); 1061 mCamera.restore(); 1062 1063 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 1064 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 1065 mTempFloat2[0] = width; 1066 mTempFloat2[1] = height; 1067 mMatrix.mapPoints(mTempFloat2); 1068 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 1069 } 1070 1071 float backgroundAlphaInterpolator(float r) { 1072 float pivotA = 0.1f; 1073 float pivotB = 0.4f; 1074 if (r < pivotA) { 1075 return 0; 1076 } else if (r > pivotB) { 1077 return 1.0f; 1078 } else { 1079 return (r - pivotA)/(pivotB - pivotA); 1080 } 1081 } 1082 1083 float overScrollBackgroundAlphaInterpolator(float r) { 1084 float threshold = 0.08f; 1085 1086 if (r > mOverScrollMaxBackgroundAlpha) { 1087 mOverScrollMaxBackgroundAlpha = r; 1088 } else if (r < mOverScrollMaxBackgroundAlpha) { 1089 r = mOverScrollMaxBackgroundAlpha; 1090 } 1091 1092 return Math.min(r / threshold, 1.0f); 1093 } 1094 1095 @Override 1096 protected void screenScrolled(int screenCenter) { 1097 super.screenScrolled(screenCenter); 1098 1099 // If the screen is not xlarge, then don't rotate the CellLayouts 1100 // NOTE: If we don't update the side pages alpha, then we should not hide the side pages. 1101 // see unshrink(). 1102 if (!LauncherApplication.isScreenLarge()) return; 1103 1104 final int halfScreenSize = getMeasuredWidth() / 2; 1105 1106 for (int i = 0; i < getChildCount(); i++) { 1107 CellLayout cl = (CellLayout) getChildAt(i); 1108 if (cl != null) { 1109 int totalDistance = getScaledMeasuredWidth(cl) + mPageSpacing; 1110 int delta = screenCenter - (getChildOffset(i) - 1111 getRelativeChildOffset(i) + halfScreenSize); 1112 1113 float scrollProgress = delta / (totalDistance * 1.0f); 1114 scrollProgress = Math.min(scrollProgress, 1.0f); 1115 scrollProgress = Math.max(scrollProgress, -1.0f); 1116 1117 // If the current page (i) is being overscrolled, we use a different 1118 // set of rules for setting the background alpha multiplier. 1119 if ((mScrollX < 0 && i == 0) || (mScrollX > mMaxScrollX && 1120 i == getChildCount() -1 )) { 1121 cl.setBackgroundAlphaMultiplier( 1122 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 1123 mOverScrollPageIndex = i; 1124 } else if (mOverScrollPageIndex != i) { 1125 cl.setBackgroundAlphaMultiplier( 1126 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1127 } 1128 1129 float rotation = WORKSPACE_ROTATION * scrollProgress; 1130 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1131 cl.setTranslationX(translationX); 1132 1133 cl.setRotationY(rotation); 1134 } 1135 } 1136 } 1137 1138 protected void onAttachedToWindow() { 1139 super.onAttachedToWindow(); 1140 mWindowToken = getWindowToken(); 1141 computeScroll(); 1142 mDragController.setWindowToken(mWindowToken); 1143 } 1144 1145 protected void onDetachedFromWindow() { 1146 mWindowToken = null; 1147 } 1148 1149 @Override 1150 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1151 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1152 mUpdateWallpaperOffsetImmediately = true; 1153 } 1154 super.onLayout(changed, left, top, right, bottom); 1155 1156 // if shrinkToBottom() is called on initialization, it has to be deferred 1157 // until after the first call to onLayout so that it has the correct width 1158 if (mWaitingToShrink) { 1159 // shrink can trigger a synchronous onLayout call, so we 1160 // post this to avoid a stack overflow / tangled onLayout calls 1161 post(new Runnable() { 1162 public void run() { 1163 shrink(mWaitingToShrinkState, false); 1164 mWaitingToShrink = false; 1165 } 1166 }); 1167 } 1168 } 1169 1170 public void showFolderAccept(FolderRingAnimator fra) { 1171 mFolderOuterRings.add(fra); 1172 } 1173 1174 public void hideFolderAccept(FolderRingAnimator fra) { 1175 if (mFolderOuterRings.contains(fra)) { 1176 mFolderOuterRings.remove(fra); 1177 } 1178 invalidate(); 1179 } 1180 1181 @Override 1182 protected void onDraw(Canvas canvas) { 1183 updateWallpaperOffsets(); 1184 1185 // Draw the background gradient if necessary 1186 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1187 int alpha = (int) (mBackgroundAlpha * 255); 1188 mBackground.setAlpha(alpha); 1189 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1190 getMeasuredHeight()); 1191 mBackground.draw(canvas); 1192 } 1193 1194 // The folder outer / inner ring image(s) 1195 for (int i = 0; i < mFolderOuterRings.size(); i++) { 1196 View currentPage = getChildAt(getCurrentPage()); 1197 Matrix m = currentPage.getMatrix(); 1198 1199 FolderRingAnimator fra = mFolderOuterRings.get(i); 1200 1201 // Draw outer ring 1202 Drawable d = FolderRingAnimator.sSharedOuterRingDrawable; 1203 int width = (int) fra.getOuterRingSize(); 1204 int height = width; 1205 fra.getLocation(mTempLocation); 1206 1207 // First we map the folder's location from window coordinates to its containing 1208 // CellLayout's coordinates. Then we transform the coordinates according to the 1209 // CellLayout's transform. Finally, we map this back into the coordinates of the 1210 // the window (ie. Workspace). 1211 int x = mTempLocation[0] + mScrollX - width / 2 - currentPage.getLeft(); 1212 int y = mTempLocation[1] + mScrollY - height / 2 - currentPage.getTop(); 1213 mTempFloatTuple[0] = x; 1214 mTempFloatTuple[1] = y; 1215 m.mapPoints(mTempFloatTuple); 1216 x = (int) (mTempFloatTuple[0]) + currentPage.getLeft(); 1217 y = (int) (mTempFloatTuple[1]) + currentPage.getTop(); 1218 1219 canvas.save(); 1220 canvas.translate(x, y); 1221 d.setBounds(0, 0, (int) (width * currentPage.getScaleX()), 1222 (int) (height * currentPage.getScaleY())); 1223 d.draw(canvas); 1224 canvas.restore(); 1225 1226 // Draw inner ring 1227 d = FolderRingAnimator.sSharedInnerRingDrawable; 1228 width = (int) fra.getInnerRingSize(); 1229 height = width; 1230 1231 // First we map the folder's location from window coordinates to its containing 1232 // CellLayout's coordinates. Then we transform the coordinates according to the 1233 // CellLayout's transform. Finally, we map this back into the coordinates of the 1234 // the window (ie. Workspace). 1235 x = mTempLocation[0] + mScrollX - width / 2 - currentPage.getLeft(); 1236 y = mTempLocation[1] + mScrollY - height / 2 - currentPage.getTop(); 1237 mTempFloatTuple[0] = x; 1238 mTempFloatTuple[1] = y; 1239 m.mapPoints(mTempFloatTuple); 1240 x = (int) (mTempFloatTuple[0]) + currentPage.getLeft(); 1241 y = (int) (mTempFloatTuple[1]) + currentPage.getTop(); 1242 1243 canvas.save(); 1244 canvas.translate(x, y); 1245 d.setBounds(0, 0, (int) (width * currentPage.getScaleX()), 1246 (int) (height * currentPage.getScaleY())); 1247 d.draw(canvas); 1248 canvas.restore(); 1249 } 1250 super.onDraw(canvas); 1251 } 1252 1253 @Override 1254 protected void dispatchDraw(Canvas canvas) { 1255 if (mIsSmall || mIsInUnshrinkAnimation) { 1256 // Draw all the workspaces if we're small 1257 final int pageCount = getChildCount(); 1258 final long drawingTime = getDrawingTime(); 1259 for (int i = 0; i < pageCount; i++) { 1260 final CellLayout page = (CellLayout) getChildAt(i); 1261 if (page.getVisibility() == VISIBLE 1262 && (page.getAlpha() != 0f || page.getBackgroundAlpha() != 0f)) { 1263 drawChild(canvas, page, drawingTime); 1264 } 1265 } 1266 } else { 1267 super.dispatchDraw(canvas); 1268 1269 final int width = getWidth(); 1270 final int height = getHeight(); 1271 1272 // In portrait orientation, draw the glowing edge when dragging to adjacent screens 1273 if (mInScrollArea && (height > width)) { 1274 final int pageHeight = getChildAt(0).getHeight(); 1275 1276 // This determines the height of the glowing edge: 90% of the page height 1277 final int padding = (int) ((height - pageHeight) * 0.5f + pageHeight * 0.1f); 1278 1279 final CellLayout leftPage = (CellLayout) getChildAt(mCurrentPage - 1); 1280 final CellLayout rightPage = (CellLayout) getChildAt(mCurrentPage + 1); 1281 1282 if (leftPage != null && leftPage.getIsDragOverlapping()) { 1283 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left); 1284 d.setBounds(mScrollX, padding, mScrollX + d.getIntrinsicWidth(), height - padding); 1285 d.draw(canvas); 1286 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 1287 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right); 1288 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), padding, mScrollX + width, height - padding); 1289 d.draw(canvas); 1290 } 1291 } 1292 1293 if (mDropView != null) { 1294 // We are animating an item that was just dropped on the home screen. 1295 // Render its View in the current animation position. 1296 canvas.save(Canvas.MATRIX_SAVE_FLAG); 1297 final int xPos = mDropViewPos[0] - mDropView.getScrollX(); 1298 final int yPos = mDropViewPos[1] - mDropView.getScrollY(); 1299 canvas.translate(xPos, yPos); 1300 mDropView.draw(canvas); 1301 canvas.restore(); 1302 } 1303 } 1304 } 1305 1306 @Override 1307 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1308 if (!mLauncher.isAllAppsVisible()) { 1309 final Folder openFolder = getOpenFolder(); 1310 if (openFolder != null) { 1311 return openFolder.requestFocus(direction, previouslyFocusedRect); 1312 } else { 1313 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1314 } 1315 } 1316 return false; 1317 } 1318 1319 @Override 1320 public int getDescendantFocusability() { 1321 if (mIsSmall) { 1322 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1323 } 1324 return super.getDescendantFocusability(); 1325 } 1326 1327 @Override 1328 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1329 if (!mLauncher.isAllAppsVisible()) { 1330 final Folder openFolder = getOpenFolder(); 1331 if (openFolder != null) { 1332 openFolder.addFocusables(views, direction); 1333 } else { 1334 super.addFocusables(views, direction, focusableMode); 1335 } 1336 } 1337 } 1338 1339 void enableChildrenCache(int fromPage, int toPage) { 1340 if (fromPage > toPage) { 1341 final int temp = fromPage; 1342 fromPage = toPage; 1343 toPage = temp; 1344 } 1345 1346 final int screenCount = getChildCount(); 1347 1348 fromPage = Math.max(fromPage, 0); 1349 toPage = Math.min(toPage, screenCount - 1); 1350 1351 for (int i = fromPage; i <= toPage; i++) { 1352 final CellLayout layout = (CellLayout) getChildAt(i); 1353 layout.setChildrenDrawnWithCacheEnabled(true); 1354 layout.setChildrenDrawingCacheEnabled(true); 1355 } 1356 } 1357 1358 void clearChildrenCache() { 1359 final int screenCount = getChildCount(); 1360 for (int i = 0; i < screenCount; i++) { 1361 final CellLayout layout = (CellLayout) getChildAt(i); 1362 layout.setChildrenDrawnWithCacheEnabled(false); 1363 } 1364 } 1365 1366 protected void enableChildrenLayers(boolean enable) { 1367 for (int i = 0; i < getPageCount(); i++) { 1368 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(enable); 1369 } 1370 } 1371 @Override 1372 protected void pageBeginMoving() { 1373 enableChildrenLayers(true); 1374 super.pageBeginMoving(); 1375 } 1376 1377 @Override 1378 protected void pageEndMoving() { 1379 if (!mIsSmall && !mIsInUnshrinkAnimation) { 1380 enableChildrenLayers(false); 1381 } 1382 super.pageEndMoving(); 1383 } 1384 1385 @Override 1386 protected void onWallpaperTap(MotionEvent ev) { 1387 final int[] position = mTempCell; 1388 getLocationOnScreen(position); 1389 1390 int pointerIndex = ev.getActionIndex(); 1391 position[0] += (int) ev.getX(pointerIndex); 1392 position[1] += (int) ev.getY(pointerIndex); 1393 1394 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1395 ev.getAction() == MotionEvent.ACTION_UP 1396 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1397 position[0], position[1], 0, null); 1398 } 1399 1400 public boolean isSmall() { 1401 return mIsSmall; 1402 } 1403 1404 private float getYScaleForScreen(int screen) { 1405 int x = Math.abs(screen - 2); 1406 1407 // TODO: This should be generalized for use with arbitrary rotation angles. 1408 switch(x) { 1409 case 0: return EXTRA_SCALE_FACTOR_0; 1410 case 1: return EXTRA_SCALE_FACTOR_1; 1411 case 2: return EXTRA_SCALE_FACTOR_2; 1412 } 1413 return 1.0f; 1414 } 1415 1416 public void shrink(ShrinkState shrinkState) { 1417 shrink(shrinkState, true); 1418 } 1419 1420 1421 // we use this to shrink the workspace for the all apps view and the customize view 1422 public void shrink(ShrinkState shrinkState, boolean animated) { 1423 if (mFirstLayout) { 1424 // (mFirstLayout == "first layout has not happened yet") 1425 // if we get a call to shrink() as part of our initialization (for example, if 1426 // Launcher is started in All Apps mode) then we need to wait for a layout call 1427 // to get our width so we can layout the mini-screen views correctly 1428 mWaitingToShrink = true; 1429 mWaitingToShrinkState = shrinkState; 1430 return; 1431 } 1432 // Stop any scrolling, move to the current page right away 1433 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1434 if (!mIsDragInProcess) { 1435 updateWhichPagesAcceptDrops(shrinkState); 1436 } 1437 1438 // Hide the scrollbar 1439 hideScrollingIndicator(true); 1440 1441 CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 1442 if (currentPage == null) { 1443 Log.w(TAG, "currentPage is NULL! mCurrentPage " + mCurrentPage 1444 + " mNextPage " + mNextPage); 1445 return; 1446 } 1447 if (currentPage.getBackgroundAlphaMultiplier() < 1.0f) { 1448 currentPage.setBackgroundAlpha(0.0f); 1449 } 1450 currentPage.setBackgroundAlphaMultiplier(1.0f); 1451 1452 mIsSmall = true; 1453 mShrinkState = shrinkState; 1454 1455 // we intercept and reject all touch events when we're small, so be sure to reset the state 1456 mTouchState = TOUCH_STATE_REST; 1457 mActivePointerId = INVALID_POINTER; 1458 1459 final Resources res = getResources(); 1460 final int screenWidth = getWidth(); 1461 final int screenHeight = getHeight(); 1462 1463 // How much the workspace shrinks when we enter all apps or customization mode 1464 final float shrinkFactor = res.getInteger(R.integer.config_workspaceShrinkPercent) / 100.0f; 1465 1466 // Making the assumption that all pages have the same width as the 0th 1467 final int pageWidth = getChildAt(0).getMeasuredWidth(); 1468 final int pageHeight = getChildAt(0).getMeasuredHeight(); 1469 1470 final int scaledPageWidth = (int) (shrinkFactor * pageWidth); 1471 final int scaledPageHeight = (int) (shrinkFactor * pageHeight); 1472 final float extraScaledSpacing = res.getDimension(R.dimen.smallScreenExtraSpacing); 1473 1474 final int screenCount = getChildCount(); 1475 float totalWidth = screenCount * scaledPageWidth + (screenCount - 1) * extraScaledSpacing; 1476 1477 boolean isPortrait = getMeasuredHeight() > getMeasuredWidth(); 1478 float y = (isPortrait ? 1479 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginPortrait) : 1480 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginLandscape)); 1481 float finalAlpha = 1.0f; 1482 float extraShrinkFactor = 1.0f; 1483 1484 if (shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1485 y = screenHeight - y - scaledPageHeight; 1486 } else if (shrinkState == ShrinkState.BOTTOM_HIDDEN) { 1487 // We shrink and disappear to nothing in the case of all apps 1488 // (which is when we shrink to the bottom) 1489 y = screenHeight - y - scaledPageHeight; 1490 finalAlpha = 0.0f; 1491 } else if (shrinkState == ShrinkState.MIDDLE) { 1492 y = screenHeight / 2 - scaledPageHeight / 2; 1493 finalAlpha = 1.0f; 1494 } 1495 1496 int duration; 1497 if (shrinkState == ShrinkState.BOTTOM_HIDDEN || shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1498 duration = res.getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1499 } else { 1500 duration = res.getInteger(R.integer.config_customizeWorkspaceShrinkTime); 1501 } 1502 1503 // We animate all the screens to the centered position in workspace 1504 // At the same time, the screens become greyed/dimmed 1505 1506 // newX is initialized to the left-most position of the centered screens 1507 float x = mScroller.getFinalX() + screenWidth / 2 - totalWidth / 2; 1508 1509 // We are going to scale about the center of the view, so we need to adjust the positions 1510 // of the views accordingly 1511 x -= (pageWidth - scaledPageWidth) / 2.0f; 1512 y -= (pageHeight - scaledPageHeight) / 2.0f; 1513 1514 if (mAnimator != null) { 1515 mAnimator.cancel(); 1516 } 1517 1518 mAnimator = new AnimatorSet(); 1519 1520 final int childCount = getChildCount(); 1521 final float[] oldXs = new float[childCount]; 1522 final float[] oldYs = new float[childCount]; 1523 final float[] oldScaleXs = new float[childCount]; 1524 final float[] oldScaleYs = new float[childCount]; 1525 final float[] oldBackgroundAlphas = new float[childCount]; 1526 final float[] oldAlphas = new float[childCount]; 1527 final float[] oldRotationYs = new float[childCount]; 1528 final float[] newXs = new float[childCount]; 1529 final float[] newYs = new float[childCount]; 1530 final float[] newScaleXs = new float[childCount]; 1531 final float[] newScaleYs = new float[childCount]; 1532 final float[] newBackgroundAlphas = new float[childCount]; 1533 final float[] newAlphas = new float[childCount]; 1534 final float[] newRotationYs = new float[childCount]; 1535 1536 for (int i = 0; i < screenCount; i++) { 1537 final CellLayout cl = (CellLayout) getChildAt(i); 1538 1539 float rotation = (-i + 2) * WORKSPACE_ROTATION; 1540 float rotationScaleX = (float) (1.0f / Math.cos(Math.PI * rotation / 180.0f)); 1541 float rotationScaleY = getYScaleForScreen(i); 1542 1543 oldAlphas[i] = cl.getAlpha(); 1544 newAlphas[i] = finalAlpha; 1545 if (animated && (oldAlphas[i] != 0f || newAlphas[i] != 0f)) { 1546 // if the CellLayout will be visible during the animation, force building its 1547 // hardware layer immediately so we don't see a blip later in the animation 1548 cl.buildChildrenLayer(); 1549 } 1550 if (animated) { 1551 oldXs[i] = cl.getX(); 1552 oldYs[i] = cl.getY(); 1553 oldScaleXs[i] = cl.getScaleX(); 1554 oldScaleYs[i] = cl.getScaleY(); 1555 oldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1556 oldRotationYs[i] = cl.getRotationY(); 1557 newXs[i] = x; 1558 newYs[i] = y; 1559 newScaleXs[i] = shrinkFactor * rotationScaleX * extraShrinkFactor; 1560 newScaleYs[i] = shrinkFactor * rotationScaleY * extraShrinkFactor; 1561 newBackgroundAlphas[i] = finalAlpha; 1562 newRotationYs[i] = rotation; 1563 } else { 1564 cl.setX((int)x); 1565 cl.setY((int)y); 1566 cl.setScaleX(shrinkFactor * rotationScaleX * extraShrinkFactor); 1567 cl.setScaleY(shrinkFactor * rotationScaleY * extraShrinkFactor); 1568 cl.setBackgroundAlpha(finalAlpha); 1569 cl.setAlpha(finalAlpha); 1570 cl.setRotationY(rotation); 1571 mShrinkAnimationListener.onAnimationEnd(null); 1572 } 1573 // increment newX for the next screen 1574 x += scaledPageWidth + extraScaledSpacing; 1575 } 1576 1577 float wallpaperOffset = 0.5f; 1578 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 1579 int wallpaperTravelHeight = (int) (display.getHeight() * 1580 wallpaperTravelToScreenHeightRatio(display.getWidth(), display.getHeight())); 1581 float offsetFromCenter = (wallpaperTravelHeight / (float) mWallpaperHeight) / 2f; 1582 boolean isLandscape = display.getWidth() > display.getHeight(); 1583 1584 final boolean enableWallpaperEffects = isHardwareAccelerated(); 1585 if (enableWallpaperEffects) { 1586 switch (shrinkState) { 1587 // animating in 1588 case MIDDLE: 1589 case SPRING_LOADED: 1590 wallpaperOffset = 0.5f; 1591 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.34f : 0.32f); 1592 break; 1593 case BOTTOM_HIDDEN: 1594 case BOTTOM_VISIBLE: 1595 // allapps 1596 wallpaperOffset = 0.5f - offsetFromCenter; 1597 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.34f : 0.32f); 1598 break; 1599 } 1600 } 1601 1602 setLayoutScale(1.0f); 1603 if (animated) { 1604 if (enableWallpaperEffects) { 1605 mWallpaperOffset.setHorizontalCatchupConstant(0.46f); 1606 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1607 } 1608 1609 mSyncWallpaperOffsetWithScroll = false; 1610 1611 ValueAnimator animWithInterpolator = 1612 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1613 animWithInterpolator.setInterpolator(mZoomOutInterpolator); 1614 1615 final float oldHorizontalWallpaperOffset = getHorizontalWallpaperOffset(); 1616 final float oldVerticalWallpaperOffset = getVerticalWallpaperOffset(); 1617 final float newHorizontalWallpaperOffset = 0.5f; 1618 final float newVerticalWallpaperOffset = wallpaperOffset; 1619 animWithInterpolator.addUpdateListener(new LauncherAnimatorUpdateListener() { 1620 public void onAnimationUpdate(float a, float b) { 1621 if (b == 0f) { 1622 // an optimization, and required for correct behavior. 1623 return; 1624 } 1625 fastInvalidate(); 1626 if (enableWallpaperEffects) { 1627 setHorizontalWallpaperOffset( 1628 a * oldHorizontalWallpaperOffset + b * newHorizontalWallpaperOffset); 1629 setVerticalWallpaperOffset( 1630 a * oldVerticalWallpaperOffset + b * newVerticalWallpaperOffset); 1631 } 1632 for (int i = 0; i < screenCount; i++) { 1633 final CellLayout cl = (CellLayout) getChildAt(i); 1634 cl.fastInvalidate(); 1635 cl.setFastX(a * oldXs[i] + b * newXs[i]); 1636 cl.setFastY(a * oldYs[i] + b * newYs[i]); 1637 cl.setFastScaleX(a * oldScaleXs[i] + b * newScaleXs[i]); 1638 cl.setFastScaleY(a * oldScaleYs[i] + b * newScaleYs[i]); 1639 cl.setFastBackgroundAlpha( 1640 a * oldBackgroundAlphas[i] + b * newBackgroundAlphas[i]); 1641 cl.setFastAlpha(a * oldAlphas[i] + b * newAlphas[i]); 1642 cl.setFastRotationY(a * oldRotationYs[i] + b * newRotationYs[i]); 1643 } 1644 } 1645 }); 1646 mAnimator.playTogether(animWithInterpolator); 1647 mAnimator.addListener(mShrinkAnimationListener); 1648 mAnimator.start(); 1649 } else if (enableWallpaperEffects) { 1650 setVerticalWallpaperOffset(wallpaperOffset); 1651 setHorizontalWallpaperOffset(0.5f); 1652 updateWallpaperOffsetImmediately(); 1653 } 1654 setChildrenDrawnWithCacheEnabled(true); 1655 1656 showBackgroundGradientForAllApps(); 1657 } 1658 1659 /* 1660 * This interpolator emulates the rate at which the perceived scale of an object changes 1661 * as its distance from a camera increases. When this interpolator is applied to a scale 1662 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1663 * from the camera. 1664 */ 1665 static class ZInterpolator implements TimeInterpolator { 1666 private float focalLength; 1667 1668 public ZInterpolator(float foc) { 1669 focalLength = foc; 1670 } 1671 1672 public float getInterpolation(float input) { 1673 return (1.0f - focalLength / (focalLength + input)) / 1674 (1.0f - focalLength / (focalLength + 1.0f)); 1675 } 1676 } 1677 1678 /* 1679 * The exact reverse of ZInterpolator. 1680 */ 1681 static class InverseZInterpolator implements TimeInterpolator { 1682 private ZInterpolator zInterpolator; 1683 public InverseZInterpolator(float foc) { 1684 zInterpolator = new ZInterpolator(foc); 1685 } 1686 public float getInterpolation(float input) { 1687 return 1 - zInterpolator.getInterpolation(1 - input); 1688 } 1689 } 1690 1691 /* 1692 * ZInterpolator compounded with an ease-out. 1693 */ 1694 static class ZoomOutInterpolator implements TimeInterpolator { 1695 private final ZInterpolator zInterpolator = new ZInterpolator(0.2f); 1696 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(1.8f); 1697 1698 public float getInterpolation(float input) { 1699 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1700 } 1701 } 1702 1703 /* 1704 * InvereZInterpolator compounded with an ease-out. 1705 */ 1706 static class ZoomInInterpolator implements TimeInterpolator { 1707 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1708 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1709 1710 public float getInterpolation(float input) { 1711 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1712 } 1713 } 1714 1715 private final ZoomOutInterpolator mZoomOutInterpolator = new ZoomOutInterpolator(); 1716 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1717 1718 private void updateWhichPagesAcceptDrops(ShrinkState state) { 1719 updateWhichPagesAcceptDropsHelper(state, false, 1, 1); 1720 } 1721 1722 private void updateWhichPagesAcceptDropsDuringDrag(ShrinkState state, int spanX, int spanY) { 1723 updateWhichPagesAcceptDropsHelper(state, true, spanX, spanY); 1724 } 1725 1726 private void updateWhichPagesAcceptDropsHelper( 1727 ShrinkState state, boolean isDragHappening, int spanX, int spanY) { 1728 final int screenCount = getChildCount(); 1729 for (int i = 0; i < screenCount; i++) { 1730 CellLayout cl = (CellLayout) getChildAt(i); 1731 cl.setIsDragOccuring(isDragHappening); 1732 if (state == null) { 1733 // If we are not in a shrunken state, mark all cell layouts as droppable (if they 1734 // have the space) 1735 cl.setAcceptsDrops(cl.findCellForSpan(null, spanX, spanY)); 1736 } else { 1737 switch (state) { 1738 case BOTTOM_HIDDEN: 1739 case BOTTOM_VISIBLE: 1740 case SPRING_LOADED: 1741 cl.setIsDefaultDropTarget(false); 1742 if (!isDragHappening) { 1743 // even if a drag isn't happening, we don't want to show a screen as 1744 // accepting drops if it doesn't have at least one free cell 1745 spanX = 1; 1746 spanY = 1; 1747 } 1748 // the page accepts drops if we can find at least one empty spot 1749 cl.setAcceptsDrops(cl.findCellForSpan(null, spanX, spanY)); 1750 break; 1751 default: 1752 throw new RuntimeException("Unhandled ShrinkState " + state); 1753 } 1754 } 1755 } 1756 } 1757 1758 /* 1759 * 1760 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1761 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1762 * 1763 * These methods mark the appropriate pages as accepting drops (which alters their visual 1764 * appearance). 1765 * 1766 */ 1767 public void onDragStartedWithItem(View v) { 1768 mIsDragInProcess = true; 1769 1770 final Canvas canvas = new Canvas(); 1771 1772 // We need to add extra padding to the bitmap to make room for the glow effect 1773 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1774 1775 // The outline is used to visualize where the item will land if dropped 1776 mDragOutline = createDragOutline(v, canvas, bitmapPadding); 1777 } 1778 1779 public void onDragStartedWithItemSpans(int spanX, int spanY, Bitmap b) { 1780 mIsDragInProcess = true; 1781 1782 final Canvas canvas = new Canvas(); 1783 1784 // We need to add extra padding to the bitmap to make room for the glow effect 1785 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1786 1787 CellLayout cl = (CellLayout) getChildAt(0); 1788 1789 int[] size = cl.cellSpansToSize(spanX, spanY); 1790 1791 // The outline is used to visualize where the item will land if dropped 1792 mDragOutline = createDragOutline(b, canvas, bitmapPadding, size[0], size[1]); 1793 1794 updateWhichPagesAcceptDropsDuringDrag(mShrinkState, spanX, spanY); 1795 } 1796 1797 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1798 // never dragged over 1799 public void onDragStopped(boolean success) { 1800 mLastDragView = null; 1801 // In the success case, DragController has already called onDragExit() 1802 if (!success) { 1803 doDragExit(null); 1804 } 1805 mIsDragInProcess = false; 1806 updateWhichPagesAcceptDrops(mShrinkState); 1807 } 1808 1809 // We call this when we trigger an unshrink by clicking on the CellLayout cl 1810 public void unshrink(CellLayout clThatWasClicked) { 1811 unshrink(clThatWasClicked, false); 1812 } 1813 1814 public void unshrink(CellLayout clThatWasClicked, boolean springLoaded) { 1815 int newCurrentPage = indexOfChild(clThatWasClicked); 1816 if (mIsSmall) { 1817 if (springLoaded) { 1818 setLayoutScale(mSpringLoadedShrinkFactor); 1819 } 1820 scrollToNewPageWithoutMovingPages(newCurrentPage); 1821 unshrink(true, springLoaded); 1822 } 1823 } 1824 1825 1826 public void enterSpringLoadedDragMode(CellLayout clThatWasClicked) { 1827 mShrinkState = ShrinkState.SPRING_LOADED; 1828 unshrink(clThatWasClicked, true); 1829 mDragTargetLayout = getCurrentDropLayout(); 1830 mDragTargetLayout.onDragEnter(); 1831 mDragTargetLayout.setIsDragOverlapping(true); 1832 showOutlines(); 1833 } 1834 1835 public void exitSpringLoadedDragMode(ShrinkState shrinkState) { 1836 shrink(shrinkState); 1837 if (mDragTargetLayout != null) { 1838 mDragTargetLayout.onDragExit(); 1839 mDragTargetLayout = null; 1840 } 1841 } 1842 1843 public void exitWidgetResizeMode() { 1844 DragLayer dragLayer = (DragLayer) mLauncher.findViewById(R.id.drag_layer); 1845 dragLayer.clearAllResizeFrames(); 1846 } 1847 1848 void unshrink(boolean animated) { 1849 unshrink(animated, false); 1850 } 1851 1852 void unshrink(boolean animated, boolean springLoaded) { 1853 mWaitingToShrink = false; 1854 if (mIsSmall) { 1855 float finalScaleFactor = 1.0f; 1856 float finalBackgroundAlpha = 0.0f; 1857 if (springLoaded) { 1858 finalScaleFactor = mSpringLoadedShrinkFactor; 1859 finalBackgroundAlpha = 1.0f; 1860 } else { 1861 mIsSmall = false; 1862 } 1863 if (mAnimator != null) { 1864 mAnimator.cancel(); 1865 } 1866 1867 mAnimator = new AnimatorSet(); 1868 final int screenCount = getChildCount(); 1869 1870 final int duration = getResources().getInteger(R.integer.config_workspaceUnshrinkTime); 1871 1872 final float[] oldTranslationXs = new float[getChildCount()]; 1873 final float[] oldTranslationYs = new float[getChildCount()]; 1874 final float[] oldScaleXs = new float[getChildCount()]; 1875 final float[] oldScaleYs = new float[getChildCount()]; 1876 final float[] oldBackgroundAlphas = new float[getChildCount()]; 1877 final float[] oldBackgroundAlphaMultipliers = new float[getChildCount()]; 1878 final float[] oldAlphas = new float[getChildCount()]; 1879 final float[] oldRotationYs = new float[getChildCount()]; 1880 final float[] newTranslationXs = new float[getChildCount()]; 1881 final float[] newTranslationYs = new float[getChildCount()]; 1882 final float[] newScaleXs = new float[getChildCount()]; 1883 final float[] newScaleYs = new float[getChildCount()]; 1884 final float[] newBackgroundAlphas = new float[getChildCount()]; 1885 final float[] newBackgroundAlphaMultipliers = new float[getChildCount()]; 1886 final float[] newAlphas = new float[getChildCount()]; 1887 final float[] newRotationYs = new float[getChildCount()]; 1888 1889 for (int i = 0; i < screenCount; i++) { 1890 final CellLayout cl = (CellLayout)getChildAt(i); 1891 float finalAlphaValue = 0f; 1892 float rotation = 0f; 1893 if (LauncherApplication.isScreenLarge()) { 1894 finalAlphaValue = (i == mCurrentPage) ? 1.0f : 0.0f; 1895 1896 if (i < mCurrentPage) { 1897 rotation = WORKSPACE_ROTATION; 1898 } else if (i > mCurrentPage) { 1899 rotation = -WORKSPACE_ROTATION; 1900 } 1901 } else { 1902 // Don't hide the side panes on the phone if we don't also update the side pages 1903 // alpha. See screenScrolled(). 1904 finalAlphaValue = 1f; 1905 } 1906 float finalAlphaMultiplierValue = 1f; 1907 1908 float translation = 0f; 1909 1910 // If the screen is not xlarge, then don't rotate the CellLayouts 1911 // NOTE: If we don't update the side pages alpha, then we should not hide the side 1912 // pages. see unshrink(). 1913 if (LauncherApplication.isScreenLarge()) { 1914 translation = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1915 } 1916 1917 oldAlphas[i] = cl.getAlpha(); 1918 newAlphas[i] = finalAlphaValue; 1919 if (animated) { 1920 oldTranslationXs[i] = cl.getTranslationX(); 1921 oldTranslationYs[i] = cl.getTranslationY(); 1922 oldScaleXs[i] = cl.getScaleX(); 1923 oldScaleYs[i] = cl.getScaleY(); 1924 oldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1925 oldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1926 oldRotationYs[i] = cl.getRotationY(); 1927 1928 newTranslationXs[i] = translation; 1929 newTranslationYs[i] = 0f; 1930 newScaleXs[i] = finalScaleFactor; 1931 newScaleYs[i] = finalScaleFactor; 1932 newBackgroundAlphas[i] = finalBackgroundAlpha; 1933 newBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1934 newRotationYs[i] = rotation; 1935 } else { 1936 cl.setTranslationX(translation); 1937 cl.setTranslationY(0.0f); 1938 cl.setScaleX(finalScaleFactor); 1939 cl.setScaleY(finalScaleFactor); 1940 cl.setBackgroundAlpha(0.0f); 1941 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1942 cl.setAlpha(finalAlphaValue); 1943 cl.setRotationY(rotation); 1944 mUnshrinkAnimationListener.onAnimationEnd(null); 1945 } 1946 } 1947 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 1948 boolean isLandscape = display.getWidth() > display.getHeight(); 1949 final boolean enableWallpaperEffects = isHardwareAccelerated(); 1950 if (enableWallpaperEffects) { 1951 switch (mShrinkState) { 1952 // animating out 1953 case MIDDLE: 1954 case SPRING_LOADED: 1955 if (animated) { 1956 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.49f : 0.46f); 1957 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.49f : 0.46f); 1958 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1959 } 1960 break; 1961 case BOTTOM_HIDDEN: 1962 case BOTTOM_VISIBLE: 1963 // all apps 1964 if (animated) { 1965 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.65f : 0.65f); 1966 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.65f : 0.65f); 1967 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1968 } 1969 break; 1970 } 1971 } 1972 if (animated) { 1973 ValueAnimator animWithInterpolator = 1974 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1975 animWithInterpolator.setInterpolator(mZoomInInterpolator); 1976 1977 final float oldHorizontalWallpaperOffset = enableWallpaperEffects ? 1978 getHorizontalWallpaperOffset() : 0; 1979 final float oldVerticalWallpaperOffset = enableWallpaperEffects ? 1980 getVerticalWallpaperOffset() : 0; 1981 final float newHorizontalWallpaperOffset = enableWallpaperEffects ? 1982 wallpaperOffsetForCurrentScroll() : 0; 1983 final float newVerticalWallpaperOffset = enableWallpaperEffects ? 0.5f : 0; 1984 animWithInterpolator.addUpdateListener(new LauncherAnimatorUpdateListener() { 1985 public void onAnimationUpdate(float a, float b) { 1986 if (b == 0f) { 1987 // an optimization, but not required 1988 return; 1989 } 1990 fastInvalidate(); 1991 if (enableWallpaperEffects) { 1992 setHorizontalWallpaperOffset(a * oldHorizontalWallpaperOffset 1993 + b * newHorizontalWallpaperOffset); 1994 setVerticalWallpaperOffset(a * oldVerticalWallpaperOffset 1995 + b * newVerticalWallpaperOffset); 1996 } 1997 for (int i = 0; i < screenCount; i++) { 1998 final CellLayout cl = (CellLayout) getChildAt(i); 1999 cl.fastInvalidate(); 2000 cl.setFastTranslationX( 2001 a * oldTranslationXs[i] + b * newTranslationXs[i]); 2002 cl.setFastTranslationY( 2003 a * oldTranslationYs[i] + b * newTranslationYs[i]); 2004 cl.setFastScaleX(a * oldScaleXs[i] + b * newScaleXs[i]); 2005 cl.setFastScaleY(a * oldScaleYs[i] + b * newScaleYs[i]); 2006 cl.setFastBackgroundAlpha( 2007 a * oldBackgroundAlphas[i] + b * newBackgroundAlphas[i]); 2008 cl.setBackgroundAlphaMultiplier(a * oldBackgroundAlphaMultipliers[i] + 2009 b * newBackgroundAlphaMultipliers[i]); 2010 cl.setFastAlpha(a * oldAlphas[i] + b * newAlphas[i]); 2011 } 2012 } 2013 }); 2014 2015 ValueAnimator rotationAnim = 2016 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 2017 rotationAnim.setInterpolator(new DecelerateInterpolator(2.0f)); 2018 rotationAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 2019 public void onAnimationUpdate(float a, float b) { 2020 // don't invalidate workspace because we did it above 2021 if (b == 0f) { 2022 // an optimization, but not required 2023 return; 2024 } 2025 for (int i = 0; i < screenCount; i++) { 2026 final CellLayout cl = (CellLayout) getChildAt(i); 2027 cl.setFastRotationY(a * oldRotationYs[i] + b * newRotationYs[i]); 2028 } 2029 } 2030 }); 2031 2032 mAnimator.playTogether(animWithInterpolator, rotationAnim); 2033 // If we call this when we're not animated, onAnimationEnd is never called on 2034 // the listener; make sure we only use the listener when we're actually animating 2035 mAnimator.addListener(mUnshrinkAnimationListener); 2036 mAnimator.start(); 2037 } else { 2038 if (enableWallpaperEffects) { 2039 setHorizontalWallpaperOffset(wallpaperOffsetForCurrentScroll()); 2040 setVerticalWallpaperOffset(0.5f); 2041 updateWallpaperOffsetImmediately(); 2042 } 2043 } 2044 } 2045 2046 if (!springLoaded) { 2047 hideBackgroundGradient(); 2048 } 2049 } 2050 2051 /** 2052 * Draw the View v into the given Canvas. 2053 * 2054 * @param v the view to draw 2055 * @param destCanvas the canvas to draw on 2056 * @param padding the horizontal and vertical padding to use when drawing 2057 */ 2058 private void drawDragView(View v, Canvas destCanvas, int padding) { 2059 final Rect clipRect = mTempRect; 2060 v.getDrawingRect(clipRect); 2061 2062 // For a TextView, adjust the clip rect so that we don't include the text label 2063 if (v instanceof FolderIcon) { 2064 } else if (v instanceof BubbleTextView) { 2065 final BubbleTextView tv = (BubbleTextView) v; 2066 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 2067 tv.getLayout().getLineTop(0); 2068 } else if (v instanceof TextView) { 2069 final TextView tv = (TextView) v; 2070 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 2071 tv.getLayout().getLineTop(0); 2072 } 2073 2074 // Draw the View into the bitmap. 2075 // The translate of scrollX and scrollY is necessary when drawing TextViews, because 2076 // they set scrollX and scrollY to large values to achieve centered text 2077 2078 destCanvas.save(); 2079 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 2080 destCanvas.clipRect(clipRect, Op.REPLACE); 2081 v.draw(destCanvas); 2082 destCanvas.restore(); 2083 } 2084 2085 /** 2086 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2087 * Responsibility for the bitmap is transferred to the caller. 2088 */ 2089 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 2090 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 2091 final Bitmap b = Bitmap.createBitmap( 2092 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 2093 2094 canvas.setBitmap(b); 2095 drawDragView(v, canvas, padding); 2096 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2097 return b; 2098 } 2099 2100 /** 2101 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2102 * Responsibility for the bitmap is transferred to the caller. 2103 */ 2104 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h) { 2105 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 2106 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 2107 canvas.setBitmap(b); 2108 2109 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 2110 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 2111 (h - padding) / (float) orig.getHeight()); 2112 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 2113 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 2114 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 2115 2116 // center the image 2117 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 2118 2119 Paint p = new Paint(); 2120 p.setFilterBitmap(true); 2121 canvas.drawBitmap(orig, src, dst, p); 2122 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2123 2124 return b; 2125 } 2126 2127 /** 2128 * Creates a drag outline to represent a drop (that we don't have the actual information for 2129 * yet). May be changed in the future to alter the drop outline slightly depending on the 2130 * clip description mime data. 2131 */ 2132 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 2133 Resources r = getResources(); 2134 final int outlineColor = r.getColor(R.color.drag_outline_color); 2135 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 2136 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 2137 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 2138 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 2139 final Bitmap b = Bitmap.createBitmap( 2140 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 2141 2142 canvas.setBitmap(b); 2143 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 2144 rectRadius, rectRadius, mExternalDragOutlinePaint); 2145 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2146 return b; 2147 } 2148 2149 /** 2150 * Returns a new bitmap to show when the given View is being dragged around. 2151 * Responsibility for the bitmap is transferred to the caller. 2152 */ 2153 private Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 2154 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 2155 final Bitmap b = Bitmap.createBitmap( 2156 mDragOutline.getWidth(), mDragOutline.getHeight(), Bitmap.Config.ARGB_8888); 2157 2158 canvas.setBitmap(b); 2159 canvas.drawBitmap(mDragOutline, 0, 0, null); 2160 drawDragView(v, canvas, padding); 2161 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 2162 2163 return b; 2164 } 2165 2166 void startDrag(CellLayout.CellInfo cellInfo) { 2167 View child = cellInfo.cell; 2168 2169 // Make sure the drag was started by a long press as opposed to a long click. 2170 if (!child.isInTouchMode()) { 2171 return; 2172 } 2173 2174 mDragInfo = cellInfo; 2175 2176 CellLayout current = (CellLayout) getChildAt(cellInfo.screen); 2177 current.onDragChild(child); 2178 2179 child.clearFocus(); 2180 child.setPressed(false); 2181 2182 final Canvas canvas = new Canvas(); 2183 2184 // We need to add extra padding to the bitmap to make room for the glow effect 2185 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2186 2187 // The outline is used to visualize where the item will land if dropped 2188 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 2189 2190 // The drag bitmap follows the touch point around on the screen 2191 final Bitmap b = createDragBitmap(child, canvas, bitmapPadding); 2192 2193 final int bmpWidth = b.getWidth(); 2194 final int bmpHeight = b.getHeight(); 2195 2196 child.getLocationOnScreen(mTempXY); 2197 final int screenX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 2198 final int screenY = (int) mTempXY[1] + (child.getHeight() - bmpHeight) / 2; 2199 2200 Rect dragRect = null; 2201 if ((child instanceof BubbleTextView) && !(child instanceof FolderIcon)) { 2202 int iconSize = getResources().getDimensionPixelSize(R.dimen.app_icon_size); 2203 int top = child.getPaddingTop(); 2204 int left = (bmpWidth - iconSize) / 2; 2205 int right = left + iconSize; 2206 int bottom = top + iconSize; 2207 dragRect = new Rect(left, top, right, bottom); 2208 } 2209 2210 mLauncher.lockScreenOrientation(); 2211 mDragController.startDrag(b, screenX, screenY, this, child.getTag(), 2212 DragController.DRAG_ACTION_MOVE, dragRect); 2213 b.recycle(); 2214 } 2215 2216 void addApplicationShortcut(ShortcutInfo info, int screen, int cellX, int cellY, 2217 boolean insertAtFirst, int intersectX, int intersectY) { 2218 final CellLayout cellLayout = (CellLayout) getChildAt(screen); 2219 View view = mLauncher.createShortcut(R.layout.application, cellLayout, (ShortcutInfo) info); 2220 2221 final int[] cellXY = new int[2]; 2222 cellLayout.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 2223 addInScreen(view, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 2224 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 2225 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2226 cellXY[0], cellXY[1]); 2227 } 2228 2229 private void setPositionForDropAnimation( 2230 View dragView, int dragViewX, int dragViewY, View parent, View child) { 2231 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 2232 2233 // Based on the position of the drag view, find the top left of the original view 2234 int viewX = dragViewX + (dragView.getWidth() - child.getMeasuredWidth()) / 2; 2235 int viewY = dragViewY + (dragView.getHeight() - child.getMeasuredHeight()) / 2; 2236 2237 CellLayout layout = (CellLayout) parent; 2238 2239 // Set its old pos (in the new parent's coordinates); it will be animated 2240 // in animateViewIntoPosition after the next layout pass 2241 lp.oldX = viewX - (layout.getLeft() + layout.getPaddingLeft() - mScrollX); 2242 lp.oldY = viewY - (layout.getTop() + layout.getPaddingTop() - mScrollY); 2243 } 2244 2245 public void animateViewIntoPosition(final View view, final int fromX, final int fromY, 2246 final int dX, final int dY, final Runnable animationEndRunnable) { 2247 2248 // Calculate the duration of the animation based on the object's distance 2249 final float dist = (float) Math.sqrt(dX*dX + dY*dY); 2250 final Resources res = getResources(); 2251 final float maxDist = (float) res.getInteger(R.integer.config_dropAnimMaxDist); 2252 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration); 2253 if (dist < maxDist) { 2254 duration *= mQuintEaseOutInterpolator.getInterpolation(dist / maxDist); 2255 } 2256 2257 if (mDropAnim != null) { 2258 mDropAnim.end(); 2259 } 2260 mDropAnim = new ValueAnimator(); 2261 mDropAnim.setInterpolator(mQuintEaseOutInterpolator); 2262 2263 // The view is invisible during the animation; we render it manually. 2264 mDropAnim.addListener(new AnimatorListenerAdapter() { 2265 public void onAnimationStart(Animator animation) { 2266 // Set this here so that we don't render it until the animation begins 2267 mDropView = view; 2268 } 2269 2270 public void onAnimationEnd(Animator animation) { 2271 animationEndRunnable.run(); 2272 } 2273 }); 2274 2275 mDropAnim.setDuration(duration); 2276 mDropAnim.setFloatValues(0.0f, 1.0f); 2277 mDropAnim.removeAllUpdateListeners(); 2278 mDropAnim.addUpdateListener(new AnimatorUpdateListener() { 2279 public void onAnimationUpdate(ValueAnimator animation) { 2280 final float percent = (Float) animation.getAnimatedValue(); 2281 // Invalidate the old position 2282 invalidate(mDropViewPos[0], mDropViewPos[1], 2283 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 2284 2285 mDropViewPos[0] = fromX + (int) (percent * dX + 0.5f); 2286 mDropViewPos[1] = fromY + (int) (percent * dY + 0.5f); 2287 invalidate(mDropViewPos[0], mDropViewPos[1], 2288 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 2289 } 2290 }); 2291 2292 mDropAnim.start(); 2293 } 2294 2295 /* 2296 * We should be careful that this method cannot result in any synchronous requestLayout() 2297 * calls, as it is called from onLayout(). 2298 */ 2299 public void animateViewIntoPosition(final View view) { 2300 final CellLayout parent = (CellLayout) view.getParent().getParent(); 2301 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2302 2303 // Convert the animation params to be relative to the Workspace, not the CellLayout 2304 final int fromX = lp.oldX + parent.getLeft() + parent.getPaddingLeft(); 2305 final int fromY = lp.oldY + parent.getTop() + parent.getPaddingTop(); 2306 2307 final int dx = lp.x - lp.oldX; 2308 final int dy = lp.y - lp.oldY; 2309 2310 Runnable animationEndRunnable = new Runnable() { 2311 public void run() { 2312 if (mDropView != null) { 2313 mDropView.setVisibility(View.VISIBLE); 2314 mDropView = null; 2315 } 2316 } 2317 }; 2318 animateViewIntoPosition(view, fromX, fromY, dx, dy, animationEndRunnable); 2319 } 2320 2321 /** 2322 * {@inheritDoc} 2323 */ 2324 public boolean acceptDrop(DragObject d) { 2325 2326 // If it's an external drop (e.g. from All Apps), check if it should be accepted 2327 if (d.dragSource != this) { 2328 // Don't accept the drop if we're not over a screen at time of drop 2329 if (mDragTargetLayout == null || !mDragTargetLayout.getAcceptsDrops()) { 2330 return false; 2331 } 2332 2333 final CellLayout.CellInfo dragCellInfo = mDragInfo; 2334 final int spanX = dragCellInfo == null ? 1 : dragCellInfo.spanX; 2335 final int spanY = dragCellInfo == null ? 1 : dragCellInfo.spanY; 2336 2337 final View ignoreView = dragCellInfo == null ? null : dragCellInfo.cell; 2338 2339 // Don't accept the drop if there's no room for the item 2340 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 2341 mLauncher.showOutOfSpaceMessage(); 2342 return false; 2343 } 2344 } 2345 return true; 2346 } 2347 2348 boolean willCreateUserFolder(ItemInfo info, View v, int[] targetCell) { 2349 boolean hasntMoved = mDragInfo != null 2350 && (mDragInfo.cellX == targetCell[0] && mDragInfo.cellY == targetCell[1]); 2351 2352 if (v == null || hasntMoved) return false; 2353 2354 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2355 boolean willBecomeShortcut = 2356 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2357 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2358 2359 return (aboveShortcut && willBecomeShortcut); 2360 } 2361 2362 boolean createUserFolderIfNecessary(View newView, CellLayout target, 2363 int[] targetCell, boolean external) { 2364 View v = target.getChildAt(targetCell[0], targetCell[1]); 2365 boolean hasntMoved = mDragInfo != null 2366 && (mDragInfo.cellX == targetCell[0] && mDragInfo.cellY == targetCell[1]); 2367 2368 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2369 mCreateUserFolderOnDrop = false; 2370 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 2371 2372 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2373 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2374 2375 if (aboveShortcut && willBecomeShortcut) { 2376 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2377 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2378 // if the drag started here, we need to remove it from the workspace 2379 if (!external) { 2380 int fromScreen = mDragInfo.screen; 2381 CellLayout sourceLayout = (CellLayout) getChildAt(fromScreen); 2382 sourceLayout.removeView(newView); 2383 } 2384 2385 target.removeView(v); 2386 FolderIcon fi = mLauncher.addFolder(screen, targetCell[0], targetCell[1]); 2387 destInfo.cellX = -1; 2388 destInfo.cellY = -1; 2389 sourceInfo.cellX = -1; 2390 sourceInfo.cellY = -1; 2391 fi.addItem(destInfo); 2392 fi.addItem(sourceInfo); 2393 return true; 2394 } 2395 return false; 2396 } 2397 2398 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] tagetCell, 2399 Object dragInfo, boolean external) { 2400 View dropOverView = target.getChildAt(tagetCell[0], tagetCell[1]); 2401 if (dropOverView instanceof FolderIcon) { 2402 FolderIcon fi = (FolderIcon) dropOverView; 2403 if (fi.acceptDrop(dragInfo)) { 2404 fi.onDrop(dragInfo); 2405 2406 // if the drag started here, we need to remove it from the workspace 2407 if (!external) { 2408 int fromScreen = mDragInfo.screen; 2409 CellLayout sourceLayout = (CellLayout) getChildAt(fromScreen); 2410 sourceLayout.removeView(newView); 2411 } 2412 return true; 2413 } 2414 } 2415 return false; 2416 } 2417 2418 public void onDrop(DragObject d) { 2419 2420 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2421 mDragViewVisualCenter); 2422 2423 // We want the point to be mapped to the dragTarget. 2424 if (mDragTargetLayout != null) { 2425 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2426 } 2427 2428 // When you are in customization mode and drag to a particular screen, make that the 2429 // new current/default screen, so any subsequent taps add items to that screen 2430 if (!mLauncher.isAllAppsVisible()) { 2431 int dragTargetIndex = indexOfChild(mDragTargetLayout); 2432 if (mCurrentPage != dragTargetIndex && (mIsSmall || mIsInUnshrinkAnimation)) { 2433 scrollToNewPageWithoutMovingPages(dragTargetIndex); 2434 } 2435 } 2436 CellLayout dropTargetLayout = mDragTargetLayout; 2437 2438 if (d.dragSource != this) { 2439 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2440 (int) mDragViewVisualCenter[1] }; 2441 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d.dragView); 2442 } else if (mDragInfo != null) { 2443 final View cell = mDragInfo.cell; 2444 2445 if (dropTargetLayout != null) { 2446 // Move internally 2447 final int screen = (mTargetCell[0] < 0) ? 2448 mDragInfo.screen : indexOfChild(dropTargetLayout); 2449 2450 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2451 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2452 // First we find the cell nearest to point at which the item is 2453 // dropped, without any consideration to whether there is an item there. 2454 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2455 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2456 // If the item being dropped is a shortcut and the nearest drop 2457 // cell also contains a shortcut, then create a folder with the two shortcuts. 2458 boolean dropInscrollArea = mCurrentPage != screen; 2459 2460 if (!dropInscrollArea && createUserFolderIfNecessary(cell, dropTargetLayout, 2461 mTargetCell, false)) { 2462 return; 2463 } 2464 2465 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, 2466 d.dragInfo, false)) { 2467 return; 2468 } 2469 2470 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2471 // we need to find the nearest cell location that is vacant 2472 mTargetCell = findNearestVacantArea((int) mDragViewVisualCenter[0], 2473 (int) mDragViewVisualCenter[1], mDragInfo.spanX, mDragInfo.spanY, cell, 2474 dropTargetLayout, mTargetCell); 2475 2476 if (dropInscrollArea && mShrinkState != ShrinkState.SPRING_LOADED) { 2477 snapToPage(screen); 2478 } 2479 2480 if (mTargetCell[0] >= 0 && mTargetCell[1] >= 0) { 2481 if (screen != mDragInfo.screen) { 2482 // Reparent the view 2483 ((CellLayout) getChildAt(mDragInfo.screen)).removeView(cell); 2484 addInScreen(cell, screen, mTargetCell[0], mTargetCell[1], mDragInfo.spanX, 2485 mDragInfo.spanY); 2486 } 2487 2488 2489 // update the item's position after drop 2490 final ItemInfo info = (ItemInfo) cell.getTag(); 2491 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2492 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 2493 lp.cellX = mTargetCell[0]; 2494 lp.cellY = mTargetCell[1]; 2495 cell.setId(LauncherModel.getCellLayoutChildId(-1, mDragInfo.screen, 2496 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2497 2498 if (cell instanceof LauncherAppWidgetHostView) { 2499 final CellLayout cellLayout = dropTargetLayout; 2500 // We post this call so that the widget has a chance to be placed 2501 // in its final location 2502 2503 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2504 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2505 if (pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2506 final Runnable resizeRunnable = new Runnable() { 2507 public void run() { 2508 DragLayer dragLayer = 2509 (DragLayer) mLauncher.findViewById(R.id.drag_layer); 2510 dragLayer.addResizeFrame(info, hostView, cellLayout); 2511 } 2512 }; 2513 post(new Runnable() { 2514 public void run() { 2515 if (!isPageMoving()) { 2516 resizeRunnable.run(); 2517 } else { 2518 mDelayedResizeRunnable = resizeRunnable; 2519 } 2520 } 2521 }); 2522 } 2523 } 2524 2525 LauncherModel.moveItemInDatabase(mLauncher, info, 2526 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2527 lp.cellX, lp.cellY); 2528 } 2529 } 2530 2531 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2532 2533 int loc[] = new int[2]; 2534 getViewLocationRelativeToSelf(d.dragView, loc); 2535 2536 // Prepare it to be animated into its new position 2537 // This must be called after the view has been re-parented 2538 setPositionForDropAnimation(d.dragView, loc[0], loc[1], parent, cell); 2539 parent.onDropChild(cell, true); 2540 } 2541 } 2542 2543 public void getViewLocationRelativeToSelf(View v, int[] location) { 2544 getLocationOnScreen(location); 2545 int x = location[0]; 2546 int y = location[1]; 2547 2548 v.getLocationOnScreen(location); 2549 int vX = location[0]; 2550 int vY = location[1]; 2551 2552 location[0] = vX - x; 2553 location[1] = vY - y; 2554 } 2555 2556 public void onDragEnter(DragObject d) { 2557 mLastDragOverView = null; 2558 if (mDragTargetLayout != null) { 2559 mDragTargetLayout.onDragExit(); 2560 mDragTargetLayout = null; // Reset the drag state 2561 } 2562 2563 if (!mIsSmall) { 2564 mDragTargetLayout = getCurrentDropLayout(); 2565 mDragTargetLayout.onDragEnter(); 2566 showOutlines(); 2567 } 2568 } 2569 2570 public DropTarget getDropTargetDelegate(DragObject d) { 2571 return null; 2572 } 2573 2574 /** 2575 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 2576 * in the returned structure related to the widgets that match the drop (or a null list if it is 2577 * a shortcut drop). If the drop is not accepted then a null structure is returned. 2578 */ 2579 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 2580 final LauncherModel model = mLauncher.getModel(); 2581 final ClipDescription desc = event.getClipDescription(); 2582 final int mimeTypeCount = desc.getMimeTypeCount(); 2583 for (int i = 0; i < mimeTypeCount; ++i) { 2584 final String mimeType = desc.getMimeType(i); 2585 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 2586 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 2587 } else { 2588 final List<WidgetMimeTypeHandlerData> widgets = 2589 model.resolveWidgetsForMimeType(mContext, mimeType); 2590 if (widgets.size() > 0) { 2591 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 2592 } 2593 } 2594 } 2595 return null; 2596 } 2597 2598 /** 2599 * Global drag and drop handler 2600 */ 2601 @Override 2602 public boolean onDragEvent(DragEvent event) { 2603 final ClipDescription desc = event.getClipDescription(); 2604 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 2605 final int[] pos = new int[2]; 2606 layout.getLocationOnScreen(pos); 2607 // We need to offset the drag coordinates to layout coordinate space 2608 final int x = (int) event.getX() - pos[0]; 2609 final int y = (int) event.getY() - pos[1]; 2610 2611 switch (event.getAction()) { 2612 case DragEvent.ACTION_DRAG_STARTED: { 2613 // Validate this drag 2614 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2615 if (test != null) { 2616 boolean isShortcut = (test.second == null); 2617 if (isShortcut) { 2618 // Check if we have enough space on this screen to add a new shortcut 2619 if (!layout.findCellForSpan(pos, 1, 1)) { 2620 Toast.makeText(mContext, mContext.getString(R.string.out_of_space), 2621 Toast.LENGTH_SHORT).show(); 2622 return false; 2623 } 2624 } 2625 } else { 2626 // Show error message if we couldn't accept any of the items 2627 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 2628 Toast.LENGTH_SHORT).show(); 2629 return false; 2630 } 2631 2632 // Create the drag outline 2633 // We need to add extra padding to the bitmap to make room for the glow effect 2634 final Canvas canvas = new Canvas(); 2635 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2636 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 2637 2638 // Show the current page outlines to indicate that we can accept this drop 2639 showOutlines(); 2640 layout.setIsDragOccuring(true); 2641 layout.onDragEnter(); 2642 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2643 2644 return true; 2645 } 2646 case DragEvent.ACTION_DRAG_LOCATION: 2647 // Visualize the drop location 2648 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2649 return true; 2650 case DragEvent.ACTION_DROP: { 2651 // Try and add any shortcuts 2652 final LauncherModel model = mLauncher.getModel(); 2653 final ClipData data = event.getClipData(); 2654 2655 // We assume that the mime types are ordered in descending importance of 2656 // representation. So we enumerate the list of mime types and alert the 2657 // user if any widgets can handle the drop. Only the most preferred 2658 // representation will be handled. 2659 pos[0] = x; 2660 pos[1] = y; 2661 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2662 if (test != null) { 2663 final int index = test.first; 2664 final List<WidgetMimeTypeHandlerData> widgets = test.second; 2665 final boolean isShortcut = (widgets == null); 2666 final String mimeType = desc.getMimeType(index); 2667 if (isShortcut) { 2668 final Intent intent = data.getItemAt(index).getIntent(); 2669 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 2670 onDropExternal(new int[] { x, y }, info, layout, false); 2671 } else { 2672 if (widgets.size() == 1) { 2673 // If there is only one item, then go ahead and add and configure 2674 // that widget 2675 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 2676 final PendingAddWidgetInfo createInfo = 2677 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 2678 mLauncher.addAppWidgetFromDrop(createInfo, mCurrentPage, pos); 2679 } else { 2680 // Show the widget picker dialog if there is more than one widget 2681 // that can handle this data type 2682 final InstallWidgetReceiver.WidgetListAdapter adapter = 2683 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 2684 data, widgets, layout, mCurrentPage, pos); 2685 final AlertDialog.Builder builder = 2686 new AlertDialog.Builder(mContext); 2687 builder.setAdapter(adapter, adapter); 2688 builder.setCancelable(true); 2689 builder.setTitle(mContext.getString( 2690 R.string.external_drop_widget_pick_title)); 2691 builder.setIcon(R.drawable.ic_no_applications); 2692 builder.show(); 2693 } 2694 } 2695 } 2696 return true; 2697 } 2698 case DragEvent.ACTION_DRAG_ENDED: 2699 // Hide the page outlines after the drop 2700 layout.setIsDragOccuring(false); 2701 layout.onDragExit(); 2702 hideOutlines(); 2703 return true; 2704 } 2705 return super.onDragEvent(event); 2706 } 2707 2708 /* 2709 * 2710 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2711 * coordinate space. The argument xy is modified with the return result. 2712 * 2713 */ 2714 void mapPointFromSelfToChild(View v, float[] xy) { 2715 mapPointFromSelfToChild(v, xy, null); 2716 } 2717 2718 /* 2719 * 2720 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2721 * coordinate space. The argument xy is modified with the return result. 2722 * 2723 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2724 * computing it itself; we use this to avoid redundant matrix inversions in 2725 * findMatchingPageForDragOver 2726 * 2727 */ 2728 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2729 if (cachedInverseMatrix == null) { 2730 v.getMatrix().invert(mTempInverseMatrix); 2731 cachedInverseMatrix = mTempInverseMatrix; 2732 } 2733 xy[0] = xy[0] + mScrollX - v.getLeft(); 2734 xy[1] = xy[1] + mScrollY - v.getTop(); 2735 cachedInverseMatrix.mapPoints(xy); 2736 } 2737 2738 /* 2739 * 2740 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2741 * the parent View's coordinate space. The argument xy is modified with the return result. 2742 * 2743 */ 2744 void mapPointFromChildToSelf(View v, float[] xy) { 2745 v.getMatrix().mapPoints(xy); 2746 xy[0] -= (mScrollX - v.getLeft()); 2747 xy[1] -= (mScrollY - v.getTop()); 2748 } 2749 2750 static private float squaredDistance(float[] point1, float[] point2) { 2751 float distanceX = point1[0] - point2[0]; 2752 float distanceY = point2[1] - point2[1]; 2753 return distanceX * distanceX + distanceY * distanceY; 2754 } 2755 2756 /* 2757 * 2758 * Returns true if the passed CellLayout cl overlaps with dragView 2759 * 2760 */ 2761 boolean overlaps(CellLayout cl, DragView dragView, 2762 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2763 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2764 final float[] draggedItemTopLeft = mTempDragCoordinates; 2765 draggedItemTopLeft[0] = dragViewX; 2766 draggedItemTopLeft[1] = dragViewY; 2767 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2768 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2769 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2770 2771 // Transform the dragged item's top left coordinates 2772 // to the CellLayout's local coordinates 2773 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2774 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2775 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2776 2777 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2778 // Transform the dragged item's bottom right coordinates 2779 // to the CellLayout's local coordinates 2780 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2781 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2782 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2783 2784 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2785 float overlap = (overlapRegionRight - overlapRegionLeft) * 2786 (overlapRegionBottom - overlapRegionTop); 2787 if (overlap > 0) { 2788 return true; 2789 } 2790 } 2791 } 2792 return false; 2793 } 2794 2795 /* 2796 * 2797 * This method returns the CellLayout that is currently being dragged to. In order to drag 2798 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2799 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2800 * 2801 * Return null if no CellLayout is currently being dragged over 2802 * 2803 */ 2804 private CellLayout findMatchingPageForDragOver( 2805 DragView dragView, int originX, int originY, int offsetX, int offsetY) { 2806 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2807 // with the item being dragged and then choose the one that's closest to the touch point 2808 final int screenCount = getChildCount(); 2809 CellLayout bestMatchingScreen = null; 2810 float smallestDistSoFar = Float.MAX_VALUE; 2811 2812 for (int i = 0; i < screenCount; i++) { 2813 CellLayout cl = (CellLayout)getChildAt(i); 2814 2815 final float[] touchXy = mTempTouchCoordinates; 2816 touchXy[0] = originX + offsetX; 2817 touchXy[1] = originY + offsetY; 2818 2819 // Transform the touch coordinates to the CellLayout's local coordinates 2820 // If the touch point is within the bounds of the cell layout, we can return immediately 2821 cl.getMatrix().invert(mTempInverseMatrix); 2822 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2823 2824 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2825 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2826 return cl; 2827 } 2828 2829 if (overlaps(cl, dragView, originX, originY, mTempInverseMatrix)) { 2830 // Get the center of the cell layout in screen coordinates 2831 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2832 cellLayoutCenter[0] = cl.getWidth()/2; 2833 cellLayoutCenter[1] = cl.getHeight()/2; 2834 mapPointFromChildToSelf(cl, cellLayoutCenter); 2835 2836 touchXy[0] = originX + offsetX; 2837 touchXy[1] = originY + offsetY; 2838 2839 // Calculate the distance between the center of the CellLayout 2840 // and the touch point 2841 float dist = squaredDistance(touchXy, cellLayoutCenter); 2842 2843 if (dist < smallestDistSoFar) { 2844 smallestDistSoFar = dist; 2845 bestMatchingScreen = cl; 2846 } 2847 } 2848 } 2849 return bestMatchingScreen; 2850 } 2851 2852 // This is used to compute the visual center of the dragView. This point is then 2853 // used to visualize drop locations and determine where to drop an item. The idea is that 2854 // the visual center represents the user's interpretation of where the item is, and hence 2855 // is the appropriate point to use when determining drop location. 2856 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2857 DragView dragView, float[] recycle) { 2858 float res[]; 2859 if (recycle == null) { 2860 res = new float[2]; 2861 } else { 2862 res = recycle; 2863 } 2864 2865 // First off, the drag view has been shifted in a way that is not represented in the 2866 // x and y values or the x/yOffsets. Here we account for that shift. 2867 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2868 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2869 2870 // These represent the visual top and left of drag view if a dragRect was provided. 2871 // If a dragRect was not provided, then they correspond to the actual view left and 2872 // top, as the dragRect is in that case taken to be the entire dragView. 2873 // R.dimen.dragViewOffsetY. 2874 int left = x - xOffset; 2875 int top = y - yOffset; 2876 2877 // In order to find the visual center, we shift by half the dragRect 2878 res[0] = left + dragView.getDragRegion().width() / 2; 2879 res[1] = top + dragView.getDragRegion().height() / 2; 2880 2881 return res; 2882 } 2883 2884 public void onDragOver(DragObject d) { 2885 // When touch is inside the scroll area, skip dragOver actions for the current screen 2886 if (!mInScrollArea) { 2887 CellLayout layout; 2888 int left = d.x - d.xOffset; 2889 int top = d.y - d.yOffset; 2890 2891 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2892 d.dragView, mDragViewVisualCenter); 2893 2894 boolean shrunken = mIsSmall || mIsInUnshrinkAnimation; 2895 if (shrunken) { 2896 mLastDragView = d.dragView; 2897 mLastDragOriginX = left; 2898 mLastDragOriginY = top; 2899 mLastDragXOffset = d.xOffset; 2900 mLastDragYOffset = d.yOffset; 2901 layout = findMatchingPageForDragOver(d.dragView, left, top, d.xOffset, d.yOffset); 2902 2903 if (layout != null && layout != mDragTargetLayout) { 2904 if (mDragTargetLayout != null) { 2905 mDragTargetLayout.setIsDragOverlapping(false); 2906 mDragTargetLayout.clearDragOutlines(); 2907 } 2908 mDragTargetLayout = layout; 2909 2910 // In spring-loaded mode, we still want the user to be able to hover over a 2911 // full screen (which is traditionally set to not accept drops) if they want 2912 // to get to pages beyond the screen that is full. 2913 boolean isInSpringLoadedMode = (mShrinkState == ShrinkState.SPRING_LOADED); 2914 boolean allowDragOver = (mDragTargetLayout != null) && 2915 (mDragTargetLayout.getAcceptsDrops() || isInSpringLoadedMode); 2916 if (allowDragOver) { 2917 if (isInSpringLoadedMode) { 2918 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2919 } 2920 mDragTargetLayout.setIsDragOverlapping(true); 2921 } 2922 } 2923 } else { 2924 layout = getCurrentDropLayout(); 2925 if (layout != mDragTargetLayout) { 2926 if (mDragTargetLayout != null) { 2927 mDragTargetLayout.onDragExit(); 2928 } 2929 layout.onDragEnter(); 2930 mDragTargetLayout = layout; 2931 } 2932 } 2933 if (!shrunken || mShrinkState == ShrinkState.SPRING_LOADED) { 2934 layout = getCurrentDropLayout(); 2935 2936 final ItemInfo item = (ItemInfo) d.dragInfo; 2937 if (d.dragInfo instanceof LauncherAppWidgetInfo) { 2938 LauncherAppWidgetInfo widgetInfo = (LauncherAppWidgetInfo) d.dragInfo; 2939 2940 if (widgetInfo.spanX == -1) { 2941 // Calculate the grid spans needed to fit this widget 2942 int[] spans = layout.rectToCell(widgetInfo.minWidth, 2943 widgetInfo.minHeight, null); 2944 item.spanX = spans[0]; 2945 item.spanY = spans[1]; 2946 } 2947 } 2948 2949 if (mDragTargetLayout != null) { 2950 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2951 // We want the point to be mapped to the dragTarget. 2952 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2953 ItemInfo info = (ItemInfo) d.dragInfo; 2954 2955 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2956 (int) mDragViewVisualCenter[1], 1, 1, mDragTargetLayout, mTargetCell); 2957 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2958 mTargetCell[1]); 2959 2960 boolean userFolderPending = willCreateUserFolder(info, dragOverView, 2961 mTargetCell); 2962 boolean isOverFolder = dragOverView instanceof FolderIcon; 2963 if (dragOverView != mLastDragOverView) { 2964 cancelFolderCreation(); 2965 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2966 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2967 } 2968 } 2969 2970 if (userFolderPending && dragOverView != mLastDragOverView) { 2971 mFolderCreationAlarm.setOnAlarmListener(new 2972 FolderCreationAlarmListener(dragOverView)); 2973 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2974 } 2975 2976 if (dragOverView != mLastDragOverView && isOverFolder) { 2977 2978 ((FolderIcon) dragOverView).onDragEnter(d.dragInfo); 2979 if (mDragTargetLayout != null) { 2980 mDragTargetLayout.clearDragOutlines(); 2981 } 2982 } 2983 mLastDragOverView = dragOverView; 2984 2985 if (!mCreateUserFolderOnDrop && !isOverFolder) { 2986 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2987 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2988 item.spanX, item.spanY); 2989 } 2990 } 2991 } 2992 } 2993 } 2994 2995 private void cancelFolderCreation() { 2996 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2997 mDragFolderRingAnimator.animateToNaturalState(); 2998 } 2999 mCreateUserFolderOnDrop = false; 3000 mFolderCreationAlarm.cancelAlarm(); 3001 } 3002 3003 class FolderCreationAlarmListener implements OnAlarmListener { 3004 View v; 3005 3006 public FolderCreationAlarmListener(View v) { 3007 this.v = v; 3008 } 3009 3010 public void onAlarm(Alarm alarm) { 3011 int tvLocation[] = new int[2]; 3012 int wsLocation[] = new int[2]; 3013 v.getLocationInWindow(tvLocation); 3014 getLocationInWindow(wsLocation); 3015 3016 if (mCellWidth < 0 || mCellHeight < 0 && mDragTargetLayout != null) { 3017 mCellWidth = mDragTargetLayout.getCellWidth(); 3018 mCellHeight = mDragTargetLayout.getCellHeight(); 3019 } 3020 3021 int x = tvLocation[0] - wsLocation[0] + v.getMeasuredWidth() / 2; 3022 int y = tvLocation[1] - wsLocation[1] + FolderRingAnimator.sPreviewSize / 2; 3023 3024 if (mDragFolderRingAnimator == null) { 3025 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 3026 } 3027 mDragFolderRingAnimator.setLocation(x, y); 3028 mDragFolderRingAnimator.animateToAcceptState(); 3029 showFolderAccept(mDragFolderRingAnimator); 3030 mCreateUserFolderOnDrop = true; 3031 if (mDragTargetLayout != null) { 3032 mDragTargetLayout.clearDragOutlines(); 3033 } 3034 } 3035 } 3036 3037 private void doDragExit(DragObject d) { 3038 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 3039 mDragFolderRingAnimator.animateToNaturalState(); 3040 } 3041 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 3042 if (d != null) { 3043 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 3044 } 3045 } 3046 mFolderCreationAlarm.cancelAlarm(); 3047 3048 if (mDragTargetLayout != null) { 3049 mDragTargetLayout.onDragExit(); 3050 } 3051 if (!mIsPageMoving) { 3052 hideOutlines(); 3053 } 3054 clearAllHovers(); 3055 } 3056 3057 public void onDragExit(DragObject d) { 3058 doDragExit(d); 3059 } 3060 3061 @Override 3062 public void getHitRect(Rect outRect) { 3063 // We want the workspace to have the whole area of the display (it will find the correct 3064 // cell layout to drop to in the existing drag/drop logic. 3065 final Display d = mLauncher.getWindowManager().getDefaultDisplay(); 3066 outRect.set(0, 0, d.getWidth(), d.getHeight()); 3067 } 3068 3069 /** 3070 * Add the item specified by dragInfo to the given layout. 3071 * @return true if successful 3072 */ 3073 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 3074 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 3075 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 3076 return true; 3077 } 3078 mLauncher.showOutOfSpaceMessage(); 3079 return false; 3080 } 3081 3082 private void onDropExternal(int[] touchXY, Object dragInfo, 3083 CellLayout cellLayout, boolean insertAtFirst) { 3084 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 3085 } 3086 3087 /** 3088 * Drop an item that didn't originate on one of the workspace screens. 3089 * It may have come from Launcher (e.g. from all apps or customize), or it may have 3090 * come from another app altogether. 3091 * 3092 * NOTE: This can also be called when we are outside of a drag event, when we want 3093 * to add an item to one of the workspace screens. 3094 */ 3095 private void onDropExternal(int[] touchXY, Object dragInfo, 3096 CellLayout cellLayout, boolean insertAtFirst, DragView dragView) { 3097 int screen = indexOfChild(cellLayout); 3098 if (screen != mCurrentPage && mShrinkState != ShrinkState.SPRING_LOADED) { 3099 snapToPage(screen); 3100 } 3101 if (dragInfo instanceof PendingAddItemInfo) { 3102 PendingAddItemInfo info = (PendingAddItemInfo) dragInfo; 3103 // When dragging and dropping from customization tray, we deal with creating 3104 // widgets/shortcuts/folders in a slightly different way 3105 switch (info.itemType) { 3106 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 3107 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) info, screen, touchXY); 3108 break; 3109 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3110 mLauncher.processShortcutFromDrop(info.componentName, screen, touchXY); 3111 break; 3112 default: 3113 throw new IllegalStateException("Unknown item type: " + info.itemType); 3114 } 3115 cellLayout.onDragExit(); 3116 } else { 3117 // This is for other drag/drop cases, like dragging from All Apps 3118 ItemInfo info = (ItemInfo) dragInfo; 3119 View view = null; 3120 3121 switch (info.itemType) { 3122 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 3123 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3124 if (info.container == NO_ID && info instanceof ApplicationInfo) { 3125 // Came from all apps -- make a copy 3126 info = new ShortcutInfo((ApplicationInfo) info); 3127 } 3128 view = mLauncher.createShortcut(R.layout.application, cellLayout, 3129 (ShortcutInfo) info); 3130 break; 3131 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 3132 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 3133 (FolderInfo) info, mIconCache); 3134 break; 3135 default: 3136 throw new IllegalStateException("Unknown item type: " + info.itemType); 3137 } 3138 3139 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 3140 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 3141 // First we find the cell nearest to point at which the item is 3142 // dropped, without any consideration to whether there is an item there. 3143 if (touchXY != null) { 3144 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3145 cellLayout, mTargetCell); 3146 if (createUserFolderIfNecessary(view, cellLayout, mTargetCell, true)) { 3147 return; 3148 } 3149 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, dragInfo, true)) { 3150 return; 3151 } 3152 } 3153 3154 if (touchXY != null) { 3155 // when dragging and dropping, just find the closest free spot 3156 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], 1, 1, null, 3157 cellLayout, mTargetCell); 3158 } else { 3159 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3160 } 3161 addInScreen(view, indexOfChild(cellLayout), mTargetCell[0], 3162 mTargetCell[1], info.spanX, info.spanY, insertAtFirst); 3163 cellLayout.onDropChild(view, false); 3164 cellLayout.animateDrop(); 3165 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 3166 cellLayout.getChildrenLayout().measureChild(view); 3167 3168 if (dragView != null) { 3169 // we have the visual center of the drag view, we need to find the actual 3170 // left and top of the dragView. 3171 int loc[] = new int[2]; 3172 getViewLocationRelativeToSelf(dragView, loc); 3173 setPositionForDropAnimation(dragView, loc[0], loc[1], cellLayout, view); 3174 } 3175 3176 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 3177 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 3178 lp.cellX, lp.cellY); 3179 } 3180 } 3181 3182 /** 3183 * Return the current {@link CellLayout}, correctly picking the destination 3184 * screen while a scroll is in progress. 3185 */ 3186 public CellLayout getCurrentDropLayout() { 3187 return (CellLayout) getChildAt(mNextPage == INVALID_PAGE ? mCurrentPage : mNextPage); 3188 } 3189 3190 /** 3191 * Return the current CellInfo describing our current drag; this method exists 3192 * so that Launcher can sync this object with the correct info when the activity is created/ 3193 * destroyed 3194 * 3195 */ 3196 public CellLayout.CellInfo getDragInfo() { 3197 return mDragInfo; 3198 } 3199 3200 /** 3201 * Calculate the nearest cell where the given object would be dropped. 3202 * 3203 * pixelX and pixelY should be in the coordinate system of layout 3204 */ 3205 private int[] findNearestVacantArea(int pixelX, int pixelY, 3206 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 3207 return layout.findNearestVacantArea( 3208 pixelX, pixelY, spanX, spanY, ignoreView, recycle); 3209 } 3210 3211 /** 3212 * Calculate the nearest cell where the given object would be dropped. 3213 * 3214 * pixelX and pixelY should be in the coordinate system of layout 3215 */ 3216 private int[] findNearestArea(int pixelX, int pixelY, 3217 int spanX, int spanY, CellLayout layout, int[] recycle) { 3218 return layout.findNearestArea( 3219 pixelX, pixelY, spanX, spanY, recycle); 3220 } 3221 3222 void setup(Launcher launcher, DragController dragController) { 3223 mLauncher = launcher; 3224 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3225 mDragController = dragController; 3226 } 3227 3228 /** 3229 * Called at the end of a drag which originated on the workspace. 3230 */ 3231 public void onDropCompleted(View target, DragObject d, boolean success) { 3232 if (success) { 3233 if (target != this && mDragInfo != null) { 3234 final CellLayout cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3235 cellLayout.removeView(mDragInfo.cell); 3236 if (mDragInfo.cell instanceof DropTarget) { 3237 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 3238 } 3239 // final Object tag = mDragInfo.cell.getTag(); 3240 } 3241 } else if (mDragInfo != null) { 3242 // NOTE: When 'success' is true, onDragExit is called by the DragController before 3243 // calling onDropCompleted(). We call it ourselves here, but maybe this should be 3244 // moved into DragController.cancelDrag(). 3245 doDragExit(null); 3246 ((CellLayout) getChildAt(mDragInfo.screen)).onDropChild(mDragInfo.cell, false); 3247 } 3248 mLauncher.unlockScreenOrientation(); 3249 mDragOutline = null; 3250 mDragInfo = null; 3251 } 3252 3253 @Override 3254 public void onDragViewVisible() { 3255 ((View) mDragInfo.cell).setVisibility(View.GONE); 3256 } 3257 3258 public boolean isDropEnabled() { 3259 return true; 3260 } 3261 3262 @Override 3263 protected void onRestoreInstanceState(Parcelable state) { 3264 super.onRestoreInstanceState(state); 3265 Launcher.setScreen(mCurrentPage); 3266 } 3267 3268 @Override 3269 public void scrollLeft() { 3270 if (!mIsSmall && !mIsInUnshrinkAnimation) { 3271 super.scrollLeft(); 3272 } 3273 } 3274 3275 @Override 3276 public void scrollRight() { 3277 if (!mIsSmall && !mIsInUnshrinkAnimation) { 3278 super.scrollRight(); 3279 } 3280 } 3281 3282 @Override 3283 public void onEnterScrollArea(int direction) { 3284 if (!mIsSmall && !mIsInUnshrinkAnimation) { 3285 mInScrollArea = true; 3286 mPendingScrollDirection = direction; 3287 3288 final int page = mCurrentPage + (direction == DragController.SCROLL_LEFT ? -1 : 1); 3289 final CellLayout layout = (CellLayout) getChildAt(page); 3290 cancelFolderCreation(); 3291 3292 if (layout != null) { 3293 layout.setIsDragOverlapping(true); 3294 3295 if (mDragTargetLayout != null) { 3296 mDragTargetLayout.onDragExit(); 3297 mDragTargetLayout = layout; 3298 } 3299 // In portrait, need to redraw the edge glow when entering the scroll area 3300 if (getHeight() > getWidth()) { 3301 invalidate(); 3302 } 3303 } 3304 } 3305 } 3306 3307 private void clearAllHovers() { 3308 final int childCount = getChildCount(); 3309 for (int i = 0; i < childCount; i++) { 3310 ((CellLayout) getChildAt(i)).setIsDragOverlapping(false); 3311 } 3312 3313 // In portrait, workspace is responsible for drawing the edge glow on adjacent pages, 3314 // so we need to redraw the workspace when this may have changed. 3315 if (getHeight() > getWidth()) { 3316 invalidate(); 3317 } 3318 } 3319 3320 @Override 3321 public void onExitScrollArea() { 3322 if (mInScrollArea) { 3323 mInScrollArea = false; 3324 mPendingScrollDirection = DragController.SCROLL_NONE; 3325 clearAllHovers(); 3326 } 3327 } 3328 3329 public Folder getFolderForTag(Object tag) { 3330 final int screenCount = getChildCount(); 3331 for (int screen = 0; screen < screenCount; screen++) { 3332 ViewGroup currentScreen = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 3333 int count = currentScreen.getChildCount(); 3334 for (int i = 0; i < count; i++) { 3335 View child = currentScreen.getChildAt(i); 3336 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 3337 if (lp.cellHSpan == 4 && lp.cellVSpan == 4 && child instanceof Folder) { 3338 Folder f = (Folder) child; 3339 if (f.getInfo() == tag && f.getInfo().opened) { 3340 return f; 3341 } 3342 } 3343 } 3344 } 3345 return null; 3346 } 3347 3348 public View getViewForTag(Object tag) { 3349 int screenCount = getChildCount(); 3350 for (int screen = 0; screen < screenCount; screen++) { 3351 ViewGroup currentScreen = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 3352 int count = currentScreen.getChildCount(); 3353 for (int i = 0; i < count; i++) { 3354 View child = currentScreen.getChildAt(i); 3355 if (child.getTag() == tag) { 3356 return child; 3357 } 3358 } 3359 } 3360 return null; 3361 } 3362 3363 void clearDropTargets() { 3364 final int screenCount = getChildCount(); 3365 3366 for (int i = 0; i < screenCount; i++) { 3367 final CellLayout layoutParent = (CellLayout) getChildAt(i); 3368 final ViewGroup layout = layoutParent.getChildrenLayout(); 3369 int childCount = layout.getChildCount(); 3370 for (int j = 0; j < childCount; j++) { 3371 View v = layout.getChildAt(j); 3372 if (v instanceof DropTarget) { 3373 mDragController.removeDropTarget((DropTarget) v); 3374 } 3375 } 3376 } 3377 } 3378 3379 void removeItems(final ArrayList<ApplicationInfo> apps) { 3380 final int screenCount = getChildCount(); 3381 final PackageManager manager = getContext().getPackageManager(); 3382 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3383 3384 final HashSet<String> packageNames = new HashSet<String>(); 3385 final int appCount = apps.size(); 3386 for (int i = 0; i < appCount; i++) { 3387 packageNames.add(apps.get(i).componentName.getPackageName()); 3388 } 3389 3390 for (int i = 0; i < screenCount; i++) { 3391 final CellLayout layoutParent = (CellLayout) getChildAt(i); 3392 final ViewGroup layout = layoutParent.getChildrenLayout(); 3393 3394 // Avoid ANRs by treating each screen separately 3395 post(new Runnable() { 3396 public void run() { 3397 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3398 childrenToRemove.clear(); 3399 3400 int childCount = layout.getChildCount(); 3401 for (int j = 0; j < childCount; j++) { 3402 final View view = layout.getChildAt(j); 3403 Object tag = view.getTag(); 3404 3405 if (tag instanceof ShortcutInfo) { 3406 final ShortcutInfo info = (ShortcutInfo) tag; 3407 final Intent intent = info.intent; 3408 final ComponentName name = intent.getComponent(); 3409 3410 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3411 for (String packageName: packageNames) { 3412 if (packageName.equals(name.getPackageName())) { 3413 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3414 childrenToRemove.add(view); 3415 } 3416 } 3417 } 3418 } else if (tag instanceof FolderInfo) { 3419 final FolderInfo info = (FolderInfo) tag; 3420 final ArrayList<ShortcutInfo> contents = info.contents; 3421 final ArrayList<ShortcutInfo> toRemove = new ArrayList<ShortcutInfo>(1); 3422 final int contentsCount = contents.size(); 3423 boolean removedFromFolder = false; 3424 3425 for (int k = 0; k < contentsCount; k++) { 3426 final ShortcutInfo appInfo = contents.get(k); 3427 final Intent intent = appInfo.intent; 3428 final ComponentName name = intent.getComponent(); 3429 3430 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3431 for (String packageName: packageNames) { 3432 if (packageName.equals(name.getPackageName())) { 3433 toRemove.add(appInfo); 3434 LauncherModel.deleteItemFromDatabase(mLauncher, appInfo); 3435 removedFromFolder = true; 3436 } 3437 } 3438 } 3439 } 3440 3441 contents.removeAll(toRemove); 3442 if (removedFromFolder) { 3443 final Folder folder = getOpenFolder(); 3444 if (folder != null) 3445 folder.notifyDataSetChanged(); 3446 } 3447 } else if (tag instanceof LauncherAppWidgetInfo) { 3448 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3449 final AppWidgetProviderInfo provider = 3450 widgets.getAppWidgetInfo(info.appWidgetId); 3451 if (provider != null) { 3452 for (String packageName: packageNames) { 3453 if (packageName.equals(provider.provider.getPackageName())) { 3454 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3455 childrenToRemove.add(view); 3456 } 3457 } 3458 } 3459 } 3460 } 3461 3462 childCount = childrenToRemove.size(); 3463 for (int j = 0; j < childCount; j++) { 3464 View child = childrenToRemove.get(j); 3465 // Note: We can not remove the view directly from CellLayoutChildren as this 3466 // does not re-mark the spaces as unoccupied. 3467 layoutParent.removeViewInLayout(child); 3468 if (child instanceof DropTarget) { 3469 mDragController.removeDropTarget((DropTarget)child); 3470 } 3471 } 3472 3473 if (childCount > 0) { 3474 layout.requestLayout(); 3475 layout.invalidate(); 3476 } 3477 } 3478 }); 3479 } 3480 } 3481 3482 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3483 final int screenCount = getChildCount(); 3484 for (int i = 0; i < screenCount; i++) { 3485 final ViewGroup layout = ((CellLayout) getChildAt(i)).getChildrenLayout(); 3486 int childCount = layout.getChildCount(); 3487 for (int j = 0; j < childCount; j++) { 3488 final View view = layout.getChildAt(j); 3489 Object tag = view.getTag(); 3490 if (tag instanceof ShortcutInfo) { 3491 ShortcutInfo info = (ShortcutInfo)tag; 3492 // We need to check for ACTION_MAIN otherwise getComponent() might 3493 // return null for some shortcuts (for instance, for shortcuts to 3494 // web pages.) 3495 final Intent intent = info.intent; 3496 final ComponentName name = intent.getComponent(); 3497 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3498 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3499 final int appCount = apps.size(); 3500 for (int k = 0; k < appCount; k++) { 3501 ApplicationInfo app = apps.get(k); 3502 if (app.componentName.equals(name)) { 3503 info.setIcon(mIconCache.getIcon(info.intent)); 3504 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 3505 new FastBitmapDrawable(info.getIcon(mIconCache)), 3506 null, null); 3507 } 3508 } 3509 } 3510 } 3511 } 3512 } 3513 } 3514 3515 void moveToDefaultScreen(boolean animate) { 3516 if (mIsSmall || mIsInUnshrinkAnimation) { 3517 mLauncher.showWorkspace(animate, (CellLayout)getChildAt(mDefaultPage)); 3518 } else if (animate) { 3519 snapToPage(mDefaultPage); 3520 } else { 3521 setCurrentPage(mDefaultPage); 3522 } 3523 getChildAt(mDefaultPage).requestFocus(); 3524 } 3525 3526 void setIndicators(Drawable previous, Drawable next) { 3527 mPreviousIndicator = previous; 3528 mNextIndicator = next; 3529 previous.setLevel(mCurrentPage); 3530 next.setLevel(mCurrentPage); 3531 } 3532 3533 @Override 3534 public void syncPages() { 3535 } 3536 3537 @Override 3538 public void syncPageItems(int page) { 3539 } 3540} 3541