Workspace.java revision eecf02da58adef5486bf0c9ff7127ea891f457a4
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 android.animation.Animator; 20import android.animation.AnimatorListenerAdapter; 21import android.animation.AnimatorSet; 22import android.animation.ObjectAnimator; 23import android.animation.TimeInterpolator; 24import android.animation.ValueAnimator; 25import android.animation.ValueAnimator.AnimatorUpdateListener; 26import android.app.AlertDialog; 27import android.app.WallpaperManager; 28import android.appwidget.AppWidgetHostView; 29import android.appwidget.AppWidgetManager; 30import android.appwidget.AppWidgetProviderInfo; 31import android.content.ClipData; 32import android.content.ClipDescription; 33import android.content.ComponentName; 34import android.content.Context; 35import android.content.Intent; 36import android.content.res.Resources; 37import android.content.res.TypedArray; 38import android.graphics.Bitmap; 39import android.graphics.Camera; 40import android.graphics.Canvas; 41import android.graphics.Matrix; 42import android.graphics.Paint; 43import android.graphics.Point; 44import android.graphics.Rect; 45import android.graphics.RectF; 46import android.graphics.Region.Op; 47import android.graphics.drawable.Drawable; 48import android.os.IBinder; 49import android.os.Parcelable; 50import android.util.AttributeSet; 51import android.util.DisplayMetrics; 52import android.util.Log; 53import android.util.Pair; 54import android.view.Display; 55import android.view.DragEvent; 56import android.view.MotionEvent; 57import android.view.View; 58import android.view.ViewConfiguration; 59import android.view.ViewGroup; 60import android.view.View.MeasureSpec; 61import android.view.animation.AccelerateInterpolator; 62import android.view.animation.DecelerateInterpolator; 63import android.widget.ImageView; 64import android.widget.TextView; 65import android.widget.Toast; 66 67import com.android.launcher.R; 68import com.android.launcher2.FolderIcon.FolderRingAnimator; 69import com.android.launcher2.InstallWidgetReceiver.WidgetMimeTypeHandlerData; 70 71import java.util.ArrayList; 72import java.util.HashSet; 73import java.util.List; 74 75/** 76 * The workspace is a wide area with a wallpaper and a finite number of pages. 77 * Each page contains a number of icons, folders or widgets the user can 78 * interact with. A workspace is meant to be used with a fixed width only. 79 */ 80public class Workspace extends SmoothPagedView 81 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 82 DragController.DragListener, LauncherTransitionable { 83 @SuppressWarnings({"UnusedDeclaration"}) 84 private static final String TAG = "Launcher.Workspace"; 85 86 // Y rotation to apply to the workspace screens 87 private static final float WORKSPACE_ROTATION = 12.5f; 88 private static final float WORKSPACE_OVERSCROLL_ROTATION = 24f; 89 private static float CAMERA_DISTANCE = 6500; 90 91 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 92 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 93 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 94 95 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 96 private static final int ADJACENT_SCREEN_DROP_DURATION = 300; 97 private static final int FLING_THRESHOLD_VELOCITY = 500; 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 private float mWallpaperScrollRatio = 1.0f; 114 115 private final WallpaperManager mWallpaperManager; 116 private IBinder mWindowToken; 117 private static final float WALLPAPER_SCREENS_SPAN = 2f; 118 119 private int mDefaultPage; 120 121 /** 122 * CellInfo for the cell that is currently being dragged 123 */ 124 private CellLayout.CellInfo mDragInfo; 125 126 /** 127 * Target drop area calculated during last acceptDrop call. 128 */ 129 private int[] mTargetCell = new int[2]; 130 131 /** 132 * The CellLayout that is currently being dragged over 133 */ 134 private CellLayout mDragTargetLayout = null; 135 private boolean mDragHasEnteredWorkspace = false; 136 137 private Launcher mLauncher; 138 private IconCache mIconCache; 139 private DragController mDragController; 140 141 // These are temporary variables to prevent having to allocate a new object just to 142 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 143 private int[] mTempCell = new int[2]; 144 private int[] mTempEstimate = new int[2]; 145 private float[] mDragViewVisualCenter = new float[2]; 146 private float[] mTempDragCoordinates = new float[2]; 147 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 148 private float[] mTempDragBottomRightCoordinates = new float[2]; 149 private Matrix mTempInverseMatrix = new Matrix(); 150 151 private SpringLoadedDragController mSpringLoadedDragController; 152 private float mSpringLoadedShrinkFactor; 153 154 private static final int DEFAULT_CELL_COUNT_X = 4; 155 private static final int DEFAULT_CELL_COUNT_Y = 4; 156 157 // State variable that indicates whether the pages are small (ie when you're 158 // in all apps or customize mode) 159 160 enum State { NORMAL, SPRING_LOADED, SMALL }; 161 private State mState = State.NORMAL; 162 private boolean mIsSwitchingState = false; 163 164 boolean mAnimatingViewIntoPlace = false; 165 boolean mIsDragOccuring = false; 166 boolean mChildrenLayersEnabled = true; 167 168 /** Is the user is dragging an item near the edge of a page? */ 169 private boolean mInScrollArea = false; 170 171 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 172 private Bitmap mDragOutline = null; 173 private final Rect mTempRect = new Rect(); 174 private final int[] mTempXY = new int[2]; 175 private float mOverscrollFade = 0; 176 public static final int DRAG_BITMAP_PADDING = 0; 177 178 // Camera and Matrix used to determine the final position of a neighboring CellLayout 179 private final Matrix mMatrix = new Matrix(); 180 private final Camera mCamera = new Camera(); 181 private final float mTempFloat2[] = new float[2]; 182 183 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 184 int mWallpaperWidth; 185 int mWallpaperHeight; 186 WallpaperOffsetInterpolator mWallpaperOffset; 187 boolean mUpdateWallpaperOffsetImmediately = false; 188 private Runnable mDelayedResizeRunnable; 189 private int mDisplayWidth; 190 private int mDisplayHeight; 191 private boolean mIsStaticWallpaper; 192 private int mWallpaperTravelWidth; 193 194 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 195 private static final int FOLDER_CREATION_TIMEOUT = 250; 196 private final Alarm mFolderCreationAlarm = new Alarm(); 197 private FolderRingAnimator mDragFolderRingAnimator = null; 198 private View mLastDragOverView = null; 199 private boolean mCreateUserFolderOnDrop = false; 200 201 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 202 private float mXDown; 203 private float mYDown; 204 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 205 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 206 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 207 208 // Relating to the animation of items being dropped externally 209 public static final int ANIMATE_INTO_POSITION_AND_DISAPPEAR = 0; 210 public static final int ANIMATE_INTO_POSITION_AND_REMAIN = 1; 211 public static final int ANIMATE_INTO_POSITION_AND_RESIZE = 2; 212 public static final int COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION = 3; 213 public static final int CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION = 4; 214 215 // Relating to workspace drag fade out 216 private float mDragFadeOutAlpha; 217 private int mDragFadeOutDuration; 218 219 // These variables are used for storing the initial and final values during workspace animations 220 private int mSavedScrollX; 221 private float mSavedRotationY; 222 private float mSavedTranslationX; 223 private float mCurrentScaleX; 224 private float mCurrentScaleY; 225 private float mCurrentRotationY; 226 private float mCurrentTranslationX; 227 private float mCurrentTranslationY; 228 private float[] mOldTranslationXs; 229 private float[] mOldTranslationYs; 230 private float[] mOldScaleXs; 231 private float[] mOldScaleYs; 232 private float[] mOldBackgroundAlphas; 233 private float[] mOldBackgroundAlphaMultipliers; 234 private float[] mOldAlphas; 235 private float[] mOldRotationYs; 236 private float[] mNewTranslationXs; 237 private float[] mNewTranslationYs; 238 private float[] mNewScaleXs; 239 private float[] mNewScaleYs; 240 private float[] mNewBackgroundAlphas; 241 private float[] mNewBackgroundAlphaMultipliers; 242 private float[] mNewAlphas; 243 private float[] mNewRotationYs; 244 private float mTransitionProgress; 245 246 /** 247 * Used to inflate the Workspace from XML. 248 * 249 * @param context The application's context. 250 * @param attrs The attributes set containing the Workspace's customization values. 251 */ 252 public Workspace(Context context, AttributeSet attrs) { 253 this(context, attrs, 0); 254 } 255 256 /** 257 * Used to inflate the Workspace from XML. 258 * 259 * @param context The application's context. 260 * @param attrs The attributes set containing the Workspace's customization values. 261 * @param defStyle Unused. 262 */ 263 public Workspace(Context context, AttributeSet attrs, int defStyle) { 264 super(context, attrs, defStyle); 265 mContentIsRefreshable = false; 266 267 // With workspace, data is available straight from the get-go 268 setDataIsReady(); 269 270 final Resources res = getResources(); 271 mFadeInAdjacentScreens = res.getBoolean(R.bool.config_workspaceFadeAdjacentScreens); 272 mDragFadeOutAlpha = res.getInteger(R.integer.config_dragFadeOutAlpha) / 100f; 273 mDragFadeOutDuration = res.getInteger(R.integer.config_dragFadeOutDuration); 274 mWallpaperManager = WallpaperManager.getInstance(context); 275 276 int cellCountX = DEFAULT_CELL_COUNT_X; 277 int cellCountY = DEFAULT_CELL_COUNT_Y; 278 279 TypedArray a = context.obtainStyledAttributes(attrs, 280 R.styleable.Workspace, defStyle, 0); 281 282 if (LauncherApplication.isScreenLarge()) { 283 // Determine number of rows/columns dynamically 284 // TODO: This code currently fails on tablets with an aspect ratio < 1.3. 285 // Around that ratio we should make cells the same size in portrait and 286 // landscape 287 TypedArray actionBarSizeTypedArray = 288 context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize }); 289 DisplayMetrics displayMetrics = res.getDisplayMetrics(); 290 final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); 291 final float systemBarHeight = res.getDimension(R.dimen.status_bar_height); 292 final float smallestScreenDim = res.getConfiguration().smallestScreenWidthDp * 293 displayMetrics.density; 294 295 cellCountX = 1; 296 while (CellLayout.widthInPortrait(res, cellCountX + 1) <= smallestScreenDim) { 297 cellCountX++; 298 } 299 300 cellCountY = 1; 301 while (actionBarHeight + CellLayout.heightInLandscape(res, cellCountY + 1) 302 <= smallestScreenDim - systemBarHeight) { 303 cellCountY++; 304 } 305 } 306 307 mSpringLoadedShrinkFactor = 308 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 309 310 // if the value is manually specified, use that instead 311 cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX); 312 cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY); 313 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 314 a.recycle(); 315 316 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 317 setHapticFeedbackEnabled(false); 318 319 mLauncher = (Launcher) context; 320 initWorkspace(); 321 322 // Disable multitouch across the workspace/all apps/customize tray 323 setMotionEventSplittingEnabled(true); 324 } 325 326 // estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each 327 // dimension if unsuccessful 328 public int[] estimateItemSize(int hSpan, int vSpan, 329 ItemInfo itemInfo, boolean springLoaded) { 330 int[] size = new int[2]; 331 if (getChildCount() > 0) { 332 CellLayout cl = (CellLayout) mLauncher.getWorkspace().getChildAt(0); 333 Rect r = estimateItemPosition(cl, itemInfo, 0, 0, hSpan, vSpan); 334 size[0] = r.width(); 335 size[1] = r.height(); 336 if (springLoaded) { 337 size[0] *= mSpringLoadedShrinkFactor; 338 size[1] *= mSpringLoadedShrinkFactor; 339 } 340 return size; 341 } else { 342 size[0] = Integer.MAX_VALUE; 343 size[1] = Integer.MAX_VALUE; 344 return size; 345 } 346 } 347 public Rect estimateItemPosition(CellLayout cl, ItemInfo pendingInfo, 348 int hCell, int vCell, int hSpan, int vSpan) { 349 Rect r = new Rect(); 350 cl.cellToRect(hCell, vCell, hSpan, vSpan, r); 351 return r; 352 } 353 354 public void buildPageHardwareLayers() { 355 if (getWindowToken() != null) { 356 final int childCount = getChildCount(); 357 for (int i = 0; i < childCount; i++) { 358 CellLayout cl = (CellLayout) getChildAt(i); 359 cl.buildChildrenLayer(); 360 } 361 } 362 } 363 364 public void onDragStart(DragSource source, Object info, int dragAction) { 365 mIsDragOccuring = true; 366 updateChildrenLayersEnabled(); 367 mLauncher.lockScreenOrientationOnLargeUI(); 368 369 // Fade out the workspace slightly to highlight the currently dragging item 370 int count = getChildCount(); 371 for (int i = 0; i < count; i++) { 372 CellLayout cl = (CellLayout) getPageAt(i); 373 cl.getChildrenLayout().animate().alpha(mDragFadeOutAlpha) 374 .setInterpolator(new AccelerateInterpolator(1.5f)) 375 .setDuration(mDragFadeOutDuration) 376 .start(); 377 } 378 } 379 380 public void onDragEnd() { 381 mIsDragOccuring = false; 382 updateChildrenLayersEnabled(); 383 mLauncher.unlockScreenOrientationOnLargeUI(); 384 385 // Fade the workspace back in after we have completed dragging 386 int count = getChildCount(); 387 for (int i = 0; i < count; i++) { 388 CellLayout cl = (CellLayout) getPageAt(i); 389 cl.getChildrenLayout().animate().alpha(1f) 390 .setInterpolator(new DecelerateInterpolator(1.5f)) 391 .setDuration(mDragFadeOutDuration) 392 .start(); 393 } 394 } 395 396 /** 397 * Initializes various states for this workspace. 398 */ 399 protected void initWorkspace() { 400 Context context = getContext(); 401 mCurrentPage = mDefaultPage; 402 Launcher.setScreen(mCurrentPage); 403 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 404 mIconCache = app.getIconCache(); 405 setWillNotDraw(false); 406 setChildrenDrawnWithCacheEnabled(true); 407 408 try { 409 final Resources res = getResources(); 410 mBackground = res.getDrawable(R.drawable.apps_customize_bg); 411 } catch (Resources.NotFoundException e) { 412 // In this case, we will skip drawing background protection 413 } 414 415 mWallpaperOffset = new WallpaperOffsetInterpolator(); 416 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 417 mDisplayWidth = display.getWidth(); 418 mDisplayHeight = display.getHeight(); 419 mWallpaperTravelWidth = (int) (mDisplayWidth * 420 wallpaperTravelToScreenWidthRatio(mDisplayWidth, mDisplayHeight)); 421 422 mFlingThresholdVelocity = (int) (FLING_THRESHOLD_VELOCITY * mDensity); 423 424 } 425 426 @Override 427 protected int getScrollMode() { 428 return SmoothPagedView.X_LARGE_MODE; 429 } 430 431 @Override 432 protected void onViewAdded(View child) { 433 super.onViewAdded(child); 434 if (!(child instanceof CellLayout)) { 435 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 436 } 437 CellLayout cl = ((CellLayout) child); 438 cl.setOnInterceptTouchListener(this); 439 cl.setClickable(true); 440 cl.enableHardwareLayers(); 441 } 442 443 /** 444 * @return The open folder on the current screen, or null if there is none 445 */ 446 Folder getOpenFolder() { 447 DragLayer dragLayer = mLauncher.getDragLayer(); 448 int count = dragLayer.getChildCount(); 449 for (int i = 0; i < count; i++) { 450 View child = dragLayer.getChildAt(i); 451 if (child instanceof Folder) { 452 Folder folder = (Folder) child; 453 if (folder.getInfo().opened) 454 return folder; 455 } 456 } 457 return null; 458 } 459 460 boolean isTouchActive() { 461 return mTouchState != TOUCH_STATE_REST; 462 } 463 464 /** 465 * Adds the specified child in the specified screen. The position and dimension of 466 * the child are defined by x, y, spanX and spanY. 467 * 468 * @param child The child to add in one of the workspace's screens. 469 * @param screen The screen in which to add the child. 470 * @param x The X position of the child in the screen's grid. 471 * @param y The Y position of the child in the screen's grid. 472 * @param spanX The number of cells spanned horizontally by the child. 473 * @param spanY The number of cells spanned vertically by the child. 474 */ 475 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY) { 476 addInScreen(child, container, screen, x, y, spanX, spanY, false); 477 } 478 479 /** 480 * Adds the specified child in the specified screen. The position and dimension of 481 * the child are defined by x, y, spanX and spanY. 482 * 483 * @param child The child to add in one of the workspace's screens. 484 * @param screen The screen in which to add the child. 485 * @param x The X position of the child in the screen's grid. 486 * @param y The Y position of the child in the screen's grid. 487 * @param spanX The number of cells spanned horizontally by the child. 488 * @param spanY The number of cells spanned vertically by the child. 489 * @param insert When true, the child is inserted at the beginning of the children list. 490 */ 491 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY, 492 boolean insert) { 493 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 494 if (screen < 0 || screen >= getChildCount()) { 495 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 496 + " (was " + screen + "); skipping child"); 497 return; 498 } 499 } 500 501 final CellLayout layout; 502 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 503 layout = mLauncher.getHotseat().getLayout(); 504 child.setOnKeyListener(null); 505 506 // Hide folder title in the hotseat 507 if (child instanceof FolderIcon) { 508 ((FolderIcon) child).setTextVisible(false); 509 } 510 511 if (screen < 0) { 512 screen = mLauncher.getHotseat().getOrderInHotseat(x, y); 513 } else { 514 // Note: We do this to ensure that the hotseat is always laid out in the orientation 515 // of the hotseat in order regardless of which orientation they were added 516 x = mLauncher.getHotseat().getCellXFromOrder(screen); 517 y = mLauncher.getHotseat().getCellYFromOrder(screen); 518 } 519 } else { 520 // Show folder title if not in the hotseat 521 if (child instanceof FolderIcon) { 522 ((FolderIcon) child).setTextVisible(true); 523 } 524 525 layout = (CellLayout) getChildAt(screen); 526 child.setOnKeyListener(new IconKeyEventListener()); 527 } 528 529 LayoutParams genericLp = child.getLayoutParams(); 530 CellLayout.LayoutParams lp; 531 if (genericLp == null || !(genericLp instanceof CellLayout.LayoutParams)) { 532 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 533 } else { 534 lp = (CellLayout.LayoutParams) genericLp; 535 lp.cellX = x; 536 lp.cellY = y; 537 lp.cellHSpan = spanX; 538 lp.cellVSpan = spanY; 539 } 540 541 if (spanX < 0 && spanY < 0) { 542 lp.isLockedToGrid = false; 543 } 544 545 // Get the canonical child id to uniquely represent this view in this screen 546 int childId = LauncherModel.getCellLayoutChildId(container, screen, x, y, spanX, spanY); 547 boolean markCellsAsOccupied = !(child instanceof Folder); 548 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 549 // TODO: This branch occurs when the workspace is adding views 550 // outside of the defined grid 551 // maybe we should be deleting these items from the LauncherModel? 552 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 553 } 554 555 if (!(child instanceof Folder)) { 556 child.setHapticFeedbackEnabled(false); 557 child.setOnLongClickListener(mLongClickListener); 558 } 559 if (child instanceof DropTarget) { 560 mDragController.addDropTarget((DropTarget) child); 561 } 562 } 563 564 /** 565 * Check if the point (x, y) hits a given page. 566 */ 567 private boolean hitsPage(int index, float x, float y) { 568 final View page = getChildAt(index); 569 if (page != null) { 570 float[] localXY = { x, y }; 571 mapPointFromSelfToChild(page, localXY); 572 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 573 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 574 } 575 return false; 576 } 577 578 @Override 579 protected boolean hitsPreviousPage(float x, float y) { 580 // mNextPage is set to INVALID_PAGE whenever we are stationary. 581 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 582 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 583 584 // Only allow tap to next page on large devices, where there's significant margin outside 585 // the active workspace 586 return LauncherApplication.isScreenLarge() && hitsPage(current - 1, x, y); 587 } 588 589 @Override 590 protected boolean hitsNextPage(float x, float y) { 591 // mNextPage is set to INVALID_PAGE whenever we are stationary. 592 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 593 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 594 595 // Only allow tap to next page on large devices, where there's significant margin outside 596 // the active workspace 597 return LauncherApplication.isScreenLarge() && hitsPage(current + 1, x, y); 598 } 599 600 /** 601 * Called directly from a CellLayout (not by the framework), after we've been added as a 602 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 603 * that it should intercept touch events, which is not something that is normally supported. 604 */ 605 @Override 606 public boolean onTouch(View v, MotionEvent event) { 607 return (isSmall() || !isFinishedSwitchingState()); 608 } 609 610 public boolean isSwitchingState() { 611 return mIsSwitchingState; 612 } 613 614 /** This differs from isSwitchingState in that we take into account how far the transition 615 * has completed. */ 616 public boolean isFinishedSwitchingState() { 617 return !mIsSwitchingState || (mTransitionProgress > 0.5f); 618 } 619 620 protected void onWindowVisibilityChanged (int visibility) { 621 mLauncher.onWindowVisibilityChanged(visibility); 622 } 623 624 @Override 625 public boolean dispatchUnhandledMove(View focused, int direction) { 626 if (isSmall() || !isFinishedSwitchingState()) { 627 // when the home screens are shrunken, shouldn't allow side-scrolling 628 return false; 629 } 630 return super.dispatchUnhandledMove(focused, direction); 631 } 632 633 @Override 634 public boolean onInterceptTouchEvent(MotionEvent ev) { 635 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 636 case MotionEvent.ACTION_DOWN: 637 mXDown = ev.getX(); 638 mYDown = ev.getY(); 639 break; 640 case MotionEvent.ACTION_POINTER_UP: 641 case MotionEvent.ACTION_UP: 642 if (mTouchState == TOUCH_STATE_REST) { 643 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 644 if (!currentPage.lastDownOnOccupiedCell()) { 645 onWallpaperTap(ev); 646 } 647 } 648 } 649 return super.onInterceptTouchEvent(ev); 650 } 651 652 @Override 653 protected void determineScrollingStart(MotionEvent ev) { 654 if (isSmall()) return; 655 if (!isFinishedSwitchingState()) return; 656 657 float deltaX = Math.abs(ev.getX() - mXDown); 658 float deltaY = Math.abs(ev.getY() - mYDown); 659 660 if (Float.compare(deltaX, 0f) == 0) return; 661 662 float slope = deltaY / deltaX; 663 float theta = (float) Math.atan(slope); 664 665 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 666 cancelCurrentPageLongPress(); 667 } 668 669 if (theta > MAX_SWIPE_ANGLE) { 670 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 671 return; 672 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 673 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 674 // increase the touch slop to make it harder to begin scrolling the workspace. This 675 // results in vertically scrolling widgets to more easily. The higher the angle, the 676 // more we increase touch slop. 677 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 678 float extraRatio = (float) 679 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 680 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 681 } else { 682 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 683 super.determineScrollingStart(ev); 684 } 685 } 686 687 @Override 688 protected boolean isScrollingIndicatorEnabled() { 689 return mState != State.SPRING_LOADED; 690 } 691 692 protected void onPageBeginMoving() { 693 super.onPageBeginMoving(); 694 695 if (isHardwareAccelerated()) { 696 updateChildrenLayersEnabled(); 697 } else { 698 if (mNextPage != INVALID_PAGE) { 699 // we're snapping to a particular screen 700 enableChildrenCache(mCurrentPage, mNextPage); 701 } else { 702 // this is when user is actively dragging a particular screen, they might 703 // swipe it either left or right (but we won't advance by more than one screen) 704 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 705 } 706 } 707 708 // Only show page outlines as we pan if we are on large screen 709 if (LauncherApplication.isScreenLarge()) { 710 showOutlines(); 711 mIsStaticWallpaper = mWallpaperManager.getWallpaperInfo() == null; 712 } 713 714 // If we are not fading in adjacent screens, we still need to restore the alpha in case the 715 // user scrolls while we are transitioning (should not affect dispatchDraw optimizations) 716 if (!mFadeInAdjacentScreens) { 717 for (int i = 0; i < getChildCount(); ++i) { 718 getPageAt(i).setAlpha(1f); 719 } 720 } 721 722 // Show the scroll indicator as you pan the page 723 showScrollingIndicator(false); 724 } 725 726 protected void onPageEndMoving() { 727 super.onPageEndMoving(); 728 729 if (isHardwareAccelerated()) { 730 updateChildrenLayersEnabled(); 731 } else { 732 clearChildrenCache(); 733 } 734 735 736 if (mDragController.isDragging()) { 737 if (isSmall()) { 738 // If we are in springloaded mode, then force an event to check if the current touch 739 // is under a new page (to scroll to) 740 mDragController.forceMoveEvent(); 741 } 742 } else { 743 // If we are not mid-dragging, hide the page outlines if we are on a large screen 744 if (LauncherApplication.isScreenLarge()) { 745 hideOutlines(); 746 } 747 748 // Hide the scroll indicator as you pan the page 749 if (!mDragController.isDragging()) { 750 hideScrollingIndicator(false); 751 } 752 } 753 mOverScrollMaxBackgroundAlpha = 0.0f; 754 mOverScrollPageIndex = -1; 755 756 if (mDelayedResizeRunnable != null) { 757 mDelayedResizeRunnable.run(); 758 mDelayedResizeRunnable = null; 759 } 760 } 761 762 @Override 763 protected void notifyPageSwitchListener() { 764 super.notifyPageSwitchListener(); 765 Launcher.setScreen(mCurrentPage); 766 }; 767 768 // As a ratio of screen height, the total distance we want the parallax effect to span 769 // horizontally 770 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 771 float aspectRatio = width / (float) height; 772 773 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 774 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 775 // We will use these two data points to extrapolate how much the wallpaper parallax effect 776 // to span (ie travel) at any aspect ratio: 777 778 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 779 final float ASPECT_RATIO_PORTRAIT = 10/16f; 780 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 781 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 782 783 // To find out the desired width at different aspect ratios, we use the following two 784 // formulas, where the coefficient on x is the aspect ratio (width/height): 785 // (16/10)x + y = 1.5 786 // (10/16)x + y = 1.2 787 // We solve for x and y and end up with a final formula: 788 final float x = 789 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 790 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 791 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 792 return x * aspectRatio + y; 793 } 794 795 // The range of scroll values for Workspace 796 private int getScrollRange() { 797 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 798 } 799 800 protected void setWallpaperDimension() { 801 DisplayMetrics displayMetrics = new DisplayMetrics(); 802 mLauncher.getWindowManager().getDefaultDisplay().getRealMetrics(displayMetrics); 803 final int maxDim = Math.max(displayMetrics.widthPixels, displayMetrics.heightPixels); 804 final int minDim = Math.min(displayMetrics.widthPixels, displayMetrics.heightPixels); 805 806 // We need to ensure that there is enough extra space in the wallpaper for the intended 807 // parallax effects 808 if (LauncherApplication.isScreenLarge()) { 809 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 810 mWallpaperHeight = maxDim; 811 } else { 812 mWallpaperWidth = Math.max((int) (minDim * WALLPAPER_SCREENS_SPAN), maxDim); 813 mWallpaperHeight = maxDim; 814 } 815 new Thread("setWallpaperDimension") { 816 public void run() { 817 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 818 } 819 }.start(); 820 } 821 822 private float wallpaperOffsetForCurrentScroll() { 823 // Set wallpaper offset steps (1 / (number of screens - 1)) 824 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f); 825 826 // For the purposes of computing the scrollRange and overScrollOffset, we assume 827 // that mLayoutScale is 1. This means that when we're in spring-loaded mode, 828 // there's no discrepancy between the wallpaper offset for a given page. 829 float layoutScale = mLayoutScale; 830 mLayoutScale = 1f; 831 int scrollRange = getScrollRange(); 832 833 // Again, we adjust the wallpaper offset to be consistent between values of mLayoutScale 834 float adjustedScrollX = Math.max(0, Math.min(mScrollX, mMaxScrollX)); 835 adjustedScrollX *= mWallpaperScrollRatio; 836 mLayoutScale = layoutScale; 837 838 float scrollProgress = 839 adjustedScrollX / (float) scrollRange; 840 841 if (LauncherApplication.isScreenLarge() && mIsStaticWallpaper) { 842 // The wallpaper travel width is how far, from left to right, the wallpaper will move 843 // at this orientation. On tablets in portrait mode we don't move all the way to the 844 // edges of the wallpaper, or otherwise the parallax effect would be too strong. 845 int wallpaperTravelWidth = Math.min(mWallpaperTravelWidth, mWallpaperWidth); 846 847 float offsetInDips = wallpaperTravelWidth * scrollProgress + 848 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 849 float offset = offsetInDips / (float) mWallpaperWidth; 850 return offset; 851 } else { 852 return scrollProgress; 853 } 854 } 855 856 private void syncWallpaperOffsetWithScroll() { 857 final boolean enableWallpaperEffects = isHardwareAccelerated(); 858 if (enableWallpaperEffects) { 859 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 860 } 861 } 862 863 public void updateWallpaperOffsetImmediately() { 864 mUpdateWallpaperOffsetImmediately = true; 865 } 866 867 private void updateWallpaperOffsets() { 868 boolean updateNow = false; 869 boolean keepUpdating = true; 870 if (mUpdateWallpaperOffsetImmediately) { 871 updateNow = true; 872 keepUpdating = false; 873 mWallpaperOffset.jumpToFinal(); 874 mUpdateWallpaperOffsetImmediately = false; 875 } else { 876 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 877 } 878 if (updateNow) { 879 if (mWindowToken != null) { 880 mWallpaperManager.setWallpaperOffsets(mWindowToken, 881 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 882 } 883 } 884 if (keepUpdating) { 885 invalidate(); 886 } 887 } 888 889 @Override 890 protected void updateCurrentPageScroll() { 891 super.updateCurrentPageScroll(); 892 computeWallpaperScrollRatio(mCurrentPage); 893 } 894 895 @Override 896 protected void snapToPage(int whichPage) { 897 super.snapToPage(whichPage); 898 computeWallpaperScrollRatio(whichPage); 899 } 900 901 private void computeWallpaperScrollRatio(int page) { 902 // Here, we determine what the desired scroll would be with and without a layout scale, 903 // and compute a ratio between the two. This allows us to adjust the wallpaper offset 904 // as though there is no layout scale. 905 float layoutScale = mLayoutScale; 906 int scaled = getChildOffset(page) - getRelativeChildOffset(page); 907 mLayoutScale = 1.0f; 908 float unscaled = getChildOffset(page) - getRelativeChildOffset(page); 909 mLayoutScale = layoutScale; 910 if (scaled > 0) { 911 mWallpaperScrollRatio = (1.0f * unscaled) / scaled; 912 } else { 913 mWallpaperScrollRatio = 1f; 914 } 915 } 916 917 class WallpaperOffsetInterpolator { 918 float mFinalHorizontalWallpaperOffset = 0.0f; 919 float mFinalVerticalWallpaperOffset = 0.5f; 920 float mHorizontalWallpaperOffset = 0.0f; 921 float mVerticalWallpaperOffset = 0.5f; 922 long mLastWallpaperOffsetUpdateTime; 923 boolean mIsMovingFast; 924 boolean mOverrideHorizontalCatchupConstant; 925 float mHorizontalCatchupConstant = 0.35f; 926 float mVerticalCatchupConstant = 0.35f; 927 928 public WallpaperOffsetInterpolator() { 929 } 930 931 public void setOverrideHorizontalCatchupConstant(boolean override) { 932 mOverrideHorizontalCatchupConstant = override; 933 } 934 935 public void setHorizontalCatchupConstant(float f) { 936 mHorizontalCatchupConstant = f; 937 } 938 939 public void setVerticalCatchupConstant(float f) { 940 mVerticalCatchupConstant = f; 941 } 942 943 public boolean computeScrollOffset() { 944 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 945 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 946 mIsMovingFast = false; 947 return false; 948 } 949 boolean isLandscape = mDisplayWidth > mDisplayHeight; 950 951 long currentTime = System.currentTimeMillis(); 952 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 953 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 954 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 955 956 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 957 if (!mIsMovingFast && xdiff > 0.07) { 958 mIsMovingFast = true; 959 } 960 961 float fractionToCatchUpIn1MsHorizontal; 962 if (mOverrideHorizontalCatchupConstant) { 963 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 964 } else if (mIsMovingFast) { 965 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 966 } else { 967 // slow 968 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 969 } 970 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 971 972 fractionToCatchUpIn1MsHorizontal /= 33f; 973 fractionToCatchUpIn1MsVertical /= 33f; 974 975 final float UPDATE_THRESHOLD = 0.00001f; 976 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 977 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 978 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 979 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 980 981 // Don't have any lag between workspace and wallpaper on non-large devices 982 if (!LauncherApplication.isScreenLarge() || jumpToFinalValue) { 983 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 984 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 985 } else { 986 float percentToCatchUpVertical = 987 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 988 float percentToCatchUpHorizontal = 989 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 990 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 991 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 992 } 993 994 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 995 return true; 996 } 997 998 public float getCurrX() { 999 return mHorizontalWallpaperOffset; 1000 } 1001 1002 public float getFinalX() { 1003 return mFinalHorizontalWallpaperOffset; 1004 } 1005 1006 public float getCurrY() { 1007 return mVerticalWallpaperOffset; 1008 } 1009 1010 public float getFinalY() { 1011 return mFinalVerticalWallpaperOffset; 1012 } 1013 1014 public void setFinalX(float x) { 1015 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 1016 } 1017 1018 public void setFinalY(float y) { 1019 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 1020 } 1021 1022 public void jumpToFinal() { 1023 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 1024 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 1025 } 1026 } 1027 1028 @Override 1029 public void computeScroll() { 1030 super.computeScroll(); 1031 syncWallpaperOffsetWithScroll(); 1032 } 1033 1034 void showOutlines() { 1035 if (!isSmall() && !mIsSwitchingState) { 1036 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1037 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1038 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 1039 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 1040 mChildrenOutlineFadeInAnimation.start(); 1041 } 1042 } 1043 1044 void hideOutlines() { 1045 if (!isSmall() && !mIsSwitchingState) { 1046 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1047 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1048 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 1049 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 1050 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 1051 mChildrenOutlineFadeOutAnimation.start(); 1052 } 1053 } 1054 1055 public void showOutlinesTemporarily() { 1056 if (!mIsPageMoving && !isTouchActive()) { 1057 snapToPage(mCurrentPage); 1058 } 1059 } 1060 1061 public void setChildrenOutlineAlpha(float alpha) { 1062 mChildrenOutlineAlpha = alpha; 1063 for (int i = 0; i < getChildCount(); i++) { 1064 CellLayout cl = (CellLayout) getChildAt(i); 1065 cl.setBackgroundAlpha(alpha); 1066 } 1067 } 1068 1069 public float getChildrenOutlineAlpha() { 1070 return mChildrenOutlineAlpha; 1071 } 1072 1073 void disableBackground() { 1074 mDrawBackground = false; 1075 } 1076 void enableBackground() { 1077 mDrawBackground = true; 1078 } 1079 1080 private void animateBackgroundGradient(float finalAlpha, boolean animated) { 1081 if (mBackground == null) return; 1082 if (mBackgroundFadeInAnimation != null) { 1083 mBackgroundFadeInAnimation.cancel(); 1084 mBackgroundFadeInAnimation = null; 1085 } 1086 if (mBackgroundFadeOutAnimation != null) { 1087 mBackgroundFadeOutAnimation.cancel(); 1088 mBackgroundFadeOutAnimation = null; 1089 } 1090 float startAlpha = getBackgroundAlpha(); 1091 if (finalAlpha != startAlpha) { 1092 if (animated) { 1093 mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(startAlpha, finalAlpha); 1094 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1095 public void onAnimationUpdate(ValueAnimator animation) { 1096 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1097 } 1098 }); 1099 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1100 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1101 mBackgroundFadeOutAnimation.start(); 1102 } else { 1103 setBackgroundAlpha(finalAlpha); 1104 } 1105 } 1106 } 1107 1108 public void setBackgroundAlpha(float alpha) { 1109 if (alpha != mBackgroundAlpha) { 1110 mBackgroundAlpha = alpha; 1111 invalidate(); 1112 } 1113 } 1114 1115 public float getBackgroundAlpha() { 1116 return mBackgroundAlpha; 1117 } 1118 1119 /** 1120 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 1121 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 1122 * as being larger. This method computes what offset the rotated view should be translated 1123 * in order to minimize this perceived gap. 1124 * @param degrees Angle of the view 1125 * @param width Width of the view 1126 * @param height Height of the view 1127 * @return Offset to be used in a View.setTranslationX() call 1128 */ 1129 private float getOffsetXForRotation(float degrees, int width, int height) { 1130 mMatrix.reset(); 1131 mCamera.save(); 1132 mCamera.rotateY(Math.abs(degrees)); 1133 mCamera.getMatrix(mMatrix); 1134 mCamera.restore(); 1135 1136 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 1137 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 1138 mTempFloat2[0] = width; 1139 mTempFloat2[1] = height; 1140 mMatrix.mapPoints(mTempFloat2); 1141 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 1142 } 1143 1144 float backgroundAlphaInterpolator(float r) { 1145 float pivotA = 0.1f; 1146 float pivotB = 0.4f; 1147 if (r < pivotA) { 1148 return 0; 1149 } else if (r > pivotB) { 1150 return 1.0f; 1151 } else { 1152 return (r - pivotA)/(pivotB - pivotA); 1153 } 1154 } 1155 1156 float overScrollBackgroundAlphaInterpolator(float r) { 1157 float threshold = 0.08f; 1158 1159 if (r > mOverScrollMaxBackgroundAlpha) { 1160 mOverScrollMaxBackgroundAlpha = r; 1161 } else if (r < mOverScrollMaxBackgroundAlpha) { 1162 r = mOverScrollMaxBackgroundAlpha; 1163 } 1164 1165 return Math.min(r / threshold, 1.0f); 1166 } 1167 1168 private void screenScrolledLargeUI(int screenCenter) { 1169 if (isSwitchingState()) return; 1170 boolean isInOverscroll = false; 1171 for (int i = 0; i < getChildCount(); i++) { 1172 CellLayout cl = (CellLayout) getChildAt(i); 1173 if (cl != null) { 1174 float scrollProgress = getScrollProgress(screenCenter, cl, i); 1175 float rotation = WORKSPACE_ROTATION * scrollProgress; 1176 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1177 1178 // If the current page (i) is being over scrolled, we use a different 1179 // set of rules for setting the background alpha multiplier. 1180 if (!isSmall()) { 1181 if ((mOverScrollX < 0 && i == 0) || (mOverScrollX > mMaxScrollX && 1182 i == getChildCount() -1)) { 1183 isInOverscroll = true; 1184 rotation *= -1; 1185 cl.setBackgroundAlphaMultiplier( 1186 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 1187 mOverScrollPageIndex = i; 1188 cl.setOverScrollAmount(Math.abs(scrollProgress), i == 0); 1189 cl.setPivotX(cl.getMeasuredWidth() * (i == 0 ? 0.75f : 0.25f)); 1190 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1191 cl.setOverscrollTransformsDirty(true); 1192 } else if (mOverScrollPageIndex != i) { 1193 cl.setBackgroundAlphaMultiplier( 1194 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1195 } 1196 } 1197 cl.setTranslationX(translationX); 1198 cl.setRotationY(rotation); 1199 if (mFadeInAdjacentScreens && !isSmall()) { 1200 float alpha = 1 - Math.abs(scrollProgress); 1201 cl.setAlpha(alpha); 1202 } 1203 } 1204 } 1205 if (!isSwitchingState() && !isInOverscroll) { 1206 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1207 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1208 } 1209 invalidate(); 1210 } 1211 1212 private void screenScrolledStandardUI(int screenCenter) { 1213 if (mOverScrollX < 0 || mOverScrollX > mMaxScrollX) { 1214 int index = mOverScrollX < 0 ? 0 : getChildCount() - 1; 1215 CellLayout cl = (CellLayout) getChildAt(index); 1216 float scrollProgress = getScrollProgress(screenCenter, cl, index); 1217 cl.setOverScrollAmount(Math.abs(scrollProgress), index == 0); 1218 float rotation = - WORKSPACE_OVERSCROLL_ROTATION * scrollProgress; 1219 cl.setCameraDistance(mDensity * CAMERA_DISTANCE); 1220 cl.setPivotX(cl.getMeasuredWidth() * (index == 0 ? 0.75f : 0.25f)); 1221 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1222 cl.setRotationY(rotation); 1223 cl.setOverscrollTransformsDirty(true); 1224 setFadeForOverScroll(Math.abs(scrollProgress)); 1225 } else { 1226 if (mOverscrollFade != 0) { 1227 setFadeForOverScroll(0); 1228 } 1229 // We don't want to mess with the translations during transitions 1230 if (!isSwitchingState()) { 1231 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1232 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1233 } 1234 } 1235 } 1236 1237 @Override 1238 protected void screenScrolled(int screenCenter) { 1239 if (LauncherApplication.isScreenLarge()) { 1240 // We don't call super.screenScrolled() here because we handle the adjacent pages alpha 1241 // ourselves (for efficiency), and there are no scrolling indicators to update. 1242 screenScrolledLargeUI(screenCenter); 1243 } else { 1244 super.screenScrolled(screenCenter); 1245 screenScrolledStandardUI(screenCenter); 1246 } 1247 } 1248 1249 @Override 1250 protected void overScroll(float amount) { 1251 if (LauncherApplication.isScreenLarge()) { 1252 dampedOverScroll(amount); 1253 } else { 1254 acceleratedOverScroll(amount); 1255 } 1256 } 1257 1258 protected void onAttachedToWindow() { 1259 super.onAttachedToWindow(); 1260 mWindowToken = getWindowToken(); 1261 computeScroll(); 1262 mDragController.setWindowToken(mWindowToken); 1263 } 1264 1265 protected void onDetachedFromWindow() { 1266 mWindowToken = null; 1267 } 1268 1269 @Override 1270 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1271 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1272 mUpdateWallpaperOffsetImmediately = true; 1273 } 1274 super.onLayout(changed, left, top, right, bottom); 1275 } 1276 1277 @Override 1278 protected void onDraw(Canvas canvas) { 1279 updateWallpaperOffsets(); 1280 1281 // Draw the background gradient if necessary 1282 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1283 int alpha = (int) (mBackgroundAlpha * 255); 1284 mBackground.setAlpha(alpha); 1285 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1286 getMeasuredHeight()); 1287 mBackground.draw(canvas); 1288 } 1289 1290 super.onDraw(canvas); 1291 } 1292 1293 boolean isDrawingBackgroundGradient() { 1294 return (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground); 1295 } 1296 1297 @Override 1298 protected void dispatchDraw(Canvas canvas) { 1299 super.dispatchDraw(canvas); 1300 1301 if (mInScrollArea && !LauncherApplication.isScreenLarge()) { 1302 final int width = getWidth(); 1303 final int height = getHeight(); 1304 final int pageHeight = getChildAt(0).getHeight(); 1305 1306 // Set the height of the outline to be the height of the page 1307 final int offset = (height - pageHeight - mPaddingTop - mPaddingBottom) / 2; 1308 final int paddingTop = mPaddingTop + offset; 1309 final int paddingBottom = mPaddingBottom + offset; 1310 1311 final int page = (mNextPage != INVALID_PAGE ? mNextPage : mCurrentPage); 1312 final CellLayout leftPage = (CellLayout) getChildAt(page - 1); 1313 final CellLayout rightPage = (CellLayout) getChildAt(page + 1); 1314 1315 if (leftPage != null && leftPage.getIsDragOverlapping()) { 1316 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left_holo); 1317 d.setBounds(mScrollX, paddingTop, mScrollX + d.getIntrinsicWidth(), 1318 height - paddingBottom); 1319 d.draw(canvas); 1320 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 1321 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right_holo); 1322 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), paddingTop, mScrollX + width, 1323 height - paddingBottom); 1324 d.draw(canvas); 1325 } 1326 } 1327 } 1328 1329 @Override 1330 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1331 if (!mLauncher.isAllAppsVisible()) { 1332 final Folder openFolder = getOpenFolder(); 1333 if (openFolder != null) { 1334 return openFolder.requestFocus(direction, previouslyFocusedRect); 1335 } else { 1336 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1337 } 1338 } 1339 return false; 1340 } 1341 1342 @Override 1343 public int getDescendantFocusability() { 1344 if (isSmall()) { 1345 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1346 } 1347 return super.getDescendantFocusability(); 1348 } 1349 1350 @Override 1351 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1352 if (!mLauncher.isAllAppsVisible()) { 1353 final Folder openFolder = getOpenFolder(); 1354 if (openFolder != null) { 1355 openFolder.addFocusables(views, direction); 1356 } else { 1357 super.addFocusables(views, direction, focusableMode); 1358 } 1359 } 1360 } 1361 1362 public boolean isSmall() { 1363 return mState == State.SMALL || mState == State.SPRING_LOADED; 1364 } 1365 1366 void enableChildrenCache(int fromPage, int toPage) { 1367 if (fromPage > toPage) { 1368 final int temp = fromPage; 1369 fromPage = toPage; 1370 toPage = temp; 1371 } 1372 1373 final int screenCount = getChildCount(); 1374 1375 fromPage = Math.max(fromPage, 0); 1376 toPage = Math.min(toPage, screenCount - 1); 1377 1378 for (int i = fromPage; i <= toPage; i++) { 1379 final CellLayout layout = (CellLayout) getChildAt(i); 1380 layout.setChildrenDrawnWithCacheEnabled(true); 1381 layout.setChildrenDrawingCacheEnabled(true); 1382 } 1383 } 1384 1385 void clearChildrenCache() { 1386 final int screenCount = getChildCount(); 1387 for (int i = 0; i < screenCount; i++) { 1388 final CellLayout layout = (CellLayout) getChildAt(i); 1389 layout.setChildrenDrawnWithCacheEnabled(false); 1390 // In software mode, we don't want the items to continue to be drawn into bitmaps 1391 if (!isHardwareAccelerated()) { 1392 layout.setChildrenDrawingCacheEnabled(false); 1393 } 1394 } 1395 } 1396 1397 private void updateChildrenLayersEnabled() { 1398 boolean small = isSmall() || mIsSwitchingState; 1399 boolean dragging = mAnimatingViewIntoPlace || mIsDragOccuring; 1400 boolean enableChildrenLayers = small || dragging || isPageMoving(); 1401 1402 if (enableChildrenLayers != mChildrenLayersEnabled) { 1403 mChildrenLayersEnabled = enableChildrenLayers; 1404 for (int i = 0; i < getPageCount(); i++) { 1405 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(mChildrenLayersEnabled); 1406 } 1407 } 1408 } 1409 1410 protected void onWallpaperTap(MotionEvent ev) { 1411 final int[] position = mTempCell; 1412 getLocationOnScreen(position); 1413 1414 int pointerIndex = ev.getActionIndex(); 1415 position[0] += (int) ev.getX(pointerIndex); 1416 position[1] += (int) ev.getY(pointerIndex); 1417 1418 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1419 ev.getAction() == MotionEvent.ACTION_UP 1420 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1421 position[0], position[1], 0, null); 1422 } 1423 1424 /* 1425 * This interpolator emulates the rate at which the perceived scale of an object changes 1426 * as its distance from a camera increases. When this interpolator is applied to a scale 1427 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1428 * from the camera. 1429 */ 1430 static class ZInterpolator implements TimeInterpolator { 1431 private float focalLength; 1432 1433 public ZInterpolator(float foc) { 1434 focalLength = foc; 1435 } 1436 1437 public float getInterpolation(float input) { 1438 return (1.0f - focalLength / (focalLength + input)) / 1439 (1.0f - focalLength / (focalLength + 1.0f)); 1440 } 1441 } 1442 1443 /* 1444 * The exact reverse of ZInterpolator. 1445 */ 1446 static class InverseZInterpolator implements TimeInterpolator { 1447 private ZInterpolator zInterpolator; 1448 public InverseZInterpolator(float foc) { 1449 zInterpolator = new ZInterpolator(foc); 1450 } 1451 public float getInterpolation(float input) { 1452 return 1 - zInterpolator.getInterpolation(1 - input); 1453 } 1454 } 1455 1456 /* 1457 * ZInterpolator compounded with an ease-out. 1458 */ 1459 static class ZoomOutInterpolator implements TimeInterpolator { 1460 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(0.75f); 1461 private final ZInterpolator zInterpolator = new ZInterpolator(0.13f); 1462 1463 public float getInterpolation(float input) { 1464 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1465 } 1466 } 1467 1468 /* 1469 * InvereZInterpolator compounded with an ease-out. 1470 */ 1471 static class ZoomInInterpolator implements TimeInterpolator { 1472 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1473 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1474 1475 public float getInterpolation(float input) { 1476 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1477 } 1478 } 1479 1480 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1481 1482 /* 1483 * 1484 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1485 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1486 * 1487 * These methods mark the appropriate pages as accepting drops (which alters their visual 1488 * appearance). 1489 * 1490 */ 1491 public void onDragStartedWithItem(View v) { 1492 final Canvas canvas = new Canvas(); 1493 1494 // The outline is used to visualize where the item will land if dropped 1495 mDragOutline = createDragOutline(v, canvas, DRAG_BITMAP_PADDING); 1496 } 1497 1498 public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, Paint alphaClipPaint) { 1499 final Canvas canvas = new Canvas(); 1500 1501 int[] size = estimateItemSize(info.spanX, info.spanY, info, false); 1502 1503 // The outline is used to visualize where the item will land if dropped 1504 mDragOutline = createDragOutline(b, canvas, DRAG_BITMAP_PADDING, size[0], 1505 size[1], alphaClipPaint); 1506 } 1507 1508 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1509 // never dragged over 1510 public void onDragStopped(boolean success) { 1511 // In the success case, DragController has already called onDragExit() 1512 if (!success) { 1513 doDragExit(null); 1514 } 1515 } 1516 1517 public void exitWidgetResizeMode() { 1518 DragLayer dragLayer = mLauncher.getDragLayer(); 1519 dragLayer.clearAllResizeFrames(); 1520 } 1521 1522 private void initAnimationArrays() { 1523 final int childCount = getChildCount(); 1524 if (mOldTranslationXs != null) return; 1525 mOldTranslationXs = new float[childCount]; 1526 mOldTranslationYs = new float[childCount]; 1527 mOldScaleXs = new float[childCount]; 1528 mOldScaleYs = new float[childCount]; 1529 mOldBackgroundAlphas = new float[childCount]; 1530 mOldBackgroundAlphaMultipliers = new float[childCount]; 1531 mOldAlphas = new float[childCount]; 1532 mOldRotationYs = new float[childCount]; 1533 mNewTranslationXs = new float[childCount]; 1534 mNewTranslationYs = new float[childCount]; 1535 mNewScaleXs = new float[childCount]; 1536 mNewScaleYs = new float[childCount]; 1537 mNewBackgroundAlphas = new float[childCount]; 1538 mNewBackgroundAlphaMultipliers = new float[childCount]; 1539 mNewAlphas = new float[childCount]; 1540 mNewRotationYs = new float[childCount]; 1541 } 1542 1543 Animator getChangeStateAnimation(final State state, boolean animated) { 1544 return getChangeStateAnimation(state, animated, 0); 1545 } 1546 1547 Animator getChangeStateAnimation(final State state, boolean animated, int delay) { 1548 if (mState == state) { 1549 return null; 1550 } 1551 1552 // Initialize animation arrays for the first time if necessary 1553 initAnimationArrays(); 1554 1555 AnimatorSet anim = animated ? new AnimatorSet() : null; 1556 1557 // Stop any scrolling, move to the current page right away 1558 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1559 1560 final State oldState = mState; 1561 final boolean oldStateIsNormal = (oldState == State.NORMAL); 1562 final boolean oldStateIsSmall = (oldState == State.SMALL); 1563 mState = state; 1564 final boolean stateIsNormal = (state == State.NORMAL); 1565 final boolean stateIsSpringLoaded = (state == State.SPRING_LOADED); 1566 final boolean stateIsSmall = (state == State.SMALL); 1567 float finalScaleFactor = 1.0f; 1568 float finalBackgroundAlpha = stateIsSpringLoaded ? 1.0f : 0f; 1569 float translationX = 0; 1570 float translationY = 0; 1571 boolean zoomIn = true; 1572 1573 if (state != State.NORMAL) { 1574 finalScaleFactor = mSpringLoadedShrinkFactor - (stateIsSmall ? 0.1f : 0); 1575 if (oldStateIsNormal && stateIsSmall) { 1576 zoomIn = false; 1577 setLayoutScale(finalScaleFactor); 1578 updateChildrenLayersEnabled(); 1579 } else { 1580 finalBackgroundAlpha = 1.0f; 1581 setLayoutScale(finalScaleFactor); 1582 } 1583 } else { 1584 setLayoutScale(1.0f); 1585 } 1586 1587 final int duration = zoomIn ? 1588 getResources().getInteger(R.integer.config_workspaceUnshrinkTime) : 1589 getResources().getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1590 for (int i = 0; i < getChildCount(); i++) { 1591 final CellLayout cl = (CellLayout) getChildAt(i); 1592 float rotation = 0f; 1593 float initialAlpha = cl.getAlpha(); 1594 float finalAlphaMultiplierValue = 1f; 1595 float finalAlpha = (!mFadeInAdjacentScreens || stateIsSpringLoaded || 1596 (i == mCurrentPage)) ? 1f : 0f; 1597 1598 // Determine the pages alpha during the state transition 1599 if ((oldStateIsSmall && stateIsNormal) || 1600 (oldStateIsNormal && stateIsSmall)) { 1601 // To/from workspace - only show the current page unless the transition is not 1602 // animated and the animation end callback below doesn't run 1603 if (i == mCurrentPage || !animated) { 1604 finalAlpha = 1f; 1605 finalAlphaMultiplierValue = 0f; 1606 } else { 1607 initialAlpha = 0f; 1608 finalAlpha = 0f; 1609 } 1610 } 1611 1612 // Update the rotation of the screen (don't apply rotation on Phone UI) 1613 if (LauncherApplication.isScreenLarge()) { 1614 if (i < mCurrentPage) { 1615 rotation = WORKSPACE_ROTATION; 1616 } else if (i > mCurrentPage) { 1617 rotation = -WORKSPACE_ROTATION; 1618 } 1619 } 1620 1621 // If the screen is not xlarge, then don't rotate the CellLayouts 1622 // NOTE: If we don't update the side pages alpha, then we should not hide the side 1623 // pages. see unshrink(). 1624 if (LauncherApplication.isScreenLarge()) { 1625 translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1626 } 1627 1628 mOldAlphas[i] = initialAlpha; 1629 mNewAlphas[i] = finalAlpha; 1630 if (animated) { 1631 mOldTranslationXs[i] = cl.getTranslationX(); 1632 mOldTranslationYs[i] = cl.getTranslationY(); 1633 mOldScaleXs[i] = cl.getScaleX(); 1634 mOldScaleYs[i] = cl.getScaleY(); 1635 mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1636 mOldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1637 mOldRotationYs[i] = cl.getRotationY(); 1638 1639 mNewTranslationXs[i] = translationX; 1640 mNewTranslationYs[i] = translationY; 1641 mNewScaleXs[i] = finalScaleFactor; 1642 mNewScaleYs[i] = finalScaleFactor; 1643 mNewBackgroundAlphas[i] = finalBackgroundAlpha; 1644 mNewBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1645 mNewRotationYs[i] = rotation; 1646 } else { 1647 cl.setTranslationX(translationX); 1648 cl.setTranslationY(translationY); 1649 cl.setScaleX(finalScaleFactor); 1650 cl.setScaleY(finalScaleFactor); 1651 cl.setBackgroundAlpha(finalBackgroundAlpha); 1652 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1653 cl.setAlpha(finalAlpha); 1654 cl.setRotationY(rotation); 1655 } 1656 } 1657 1658 if (animated) { 1659 for (int index = 0; index < getChildCount(); index++) { 1660 final int i = index; 1661 final CellLayout cl = (CellLayout) getChildAt(i); 1662 if (mOldAlphas[i] == 0 && mNewAlphas[i] == 0) { 1663 cl.setTranslationX(mNewTranslationXs[i]); 1664 cl.setTranslationY(mNewTranslationYs[i]); 1665 cl.setScaleX(mNewScaleXs[i]); 1666 cl.setScaleY(mNewScaleYs[i]); 1667 cl.setBackgroundAlpha(mNewBackgroundAlphas[i]); 1668 cl.setBackgroundAlphaMultiplier(mNewBackgroundAlphaMultipliers[i]); 1669 cl.setAlpha(mNewAlphas[i]); 1670 cl.setRotationY(mNewRotationYs[i]); 1671 } else { 1672 LauncherViewPropertyAnimator a = new LauncherViewPropertyAnimator(cl); 1673 a.translationX(mNewTranslationXs[i]) 1674 .translationY(mNewTranslationYs[i]) 1675 .scaleX(mNewScaleXs[i]) 1676 .scaleY(mNewScaleYs[i]) 1677 .setDuration(duration) 1678 .setInterpolator(mZoomInInterpolator); 1679 if (mOldAlphas[i] != mNewAlphas[i]) { 1680 a.alpha(mNewAlphas[i]); 1681 } 1682 anim.play(a); 1683 if (mOldRotationYs[i] != 0 || mNewRotationYs[i] != 0) { 1684 ValueAnimator rotate = ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1685 rotate.setInterpolator(new DecelerateInterpolator(2.0f)); 1686 rotate.addUpdateListener(new LauncherAnimatorUpdateListener() { 1687 public void onAnimationUpdate(float a, float b) { 1688 cl.setRotationY(a * mOldRotationYs[i] + b * mNewRotationYs[i]); 1689 } 1690 }); 1691 anim.play(rotate); 1692 } 1693 if (mOldBackgroundAlphas[i] != 0 || 1694 mNewBackgroundAlphas[i] != 0 || 1695 mOldBackgroundAlphaMultipliers[i] != 0 || 1696 mNewBackgroundAlphaMultipliers[i] != 0) { 1697 ValueAnimator bgAnim = ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1698 bgAnim.setInterpolator(mZoomInInterpolator); 1699 bgAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1700 public void onAnimationUpdate(float a, float b) { 1701 cl.setBackgroundAlpha( 1702 a * mOldBackgroundAlphas[i] + 1703 b * mNewBackgroundAlphas[i]); 1704 cl.setBackgroundAlphaMultiplier( 1705 a * mOldBackgroundAlphaMultipliers[i] + 1706 b * mNewBackgroundAlphaMultipliers[i]); 1707 } 1708 }); 1709 anim.play(bgAnim); 1710 } 1711 } 1712 } 1713 anim.setStartDelay(delay); 1714 } 1715 1716 if (stateIsSpringLoaded) { 1717 // Right now we're covered by Apps Customize 1718 // Show the background gradient immediately, so the gradient will 1719 // be showing once AppsCustomize disappears 1720 animateBackgroundGradient(getResources().getInteger( 1721 R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, false); 1722 } else { 1723 // Fade the background gradient away 1724 animateBackgroundGradient(0f, true); 1725 } 1726 return anim; 1727 } 1728 1729 @Override 1730 public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) { 1731 mIsSwitchingState = true; 1732 } 1733 1734 @Override 1735 public void onLauncherTransitionStep(Launcher l, float t) { 1736 mTransitionProgress = t; 1737 } 1738 1739 @Override 1740 public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) { 1741 mIsSwitchingState = false; 1742 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 1743 updateChildrenLayersEnabled(); 1744 // The code in getChangeStateAnimation to determine initialAlpha and finalAlpha will ensure 1745 // ensure that only the current page is visible during (and subsequently, after) the 1746 // transition animation. If fade adjacent pages is disabled, then re-enable the page 1747 // visibility after the transition animation. 1748 if (!mFadeInAdjacentScreens) { 1749 for (int i = 0; i < getChildCount(); i++) { 1750 final CellLayout cl = (CellLayout) getChildAt(i); 1751 cl.setAlpha(1f); 1752 } 1753 } 1754 } 1755 1756 @Override 1757 public View getContent() { 1758 return this; 1759 } 1760 1761 /** 1762 * Draw the View v into the given Canvas. 1763 * 1764 * @param v the view to draw 1765 * @param destCanvas the canvas to draw on 1766 * @param padding the horizontal and vertical padding to use when drawing 1767 */ 1768 private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { 1769 final Rect clipRect = mTempRect; 1770 v.getDrawingRect(clipRect); 1771 1772 boolean textVisible = false; 1773 1774 destCanvas.save(); 1775 if (v instanceof TextView && pruneToDrawable) { 1776 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1777 clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); 1778 destCanvas.translate(padding / 2, padding / 2); 1779 d.draw(destCanvas); 1780 } else { 1781 if (v instanceof FolderIcon) { 1782 // For FolderIcons the text can bleed into the icon area, and so we need to 1783 // hide the text completely (which can't be achieved by clipping). 1784 if (((FolderIcon) v).getTextVisible()) { 1785 ((FolderIcon) v).setTextVisible(false); 1786 textVisible = true; 1787 } 1788 } else if (v instanceof BubbleTextView) { 1789 final BubbleTextView tv = (BubbleTextView) v; 1790 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1791 tv.getLayout().getLineTop(0); 1792 } else if (v instanceof TextView) { 1793 final TextView tv = (TextView) v; 1794 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1795 tv.getLayout().getLineTop(0); 1796 } 1797 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1798 destCanvas.clipRect(clipRect, Op.REPLACE); 1799 v.draw(destCanvas); 1800 1801 // Restore text visibility of FolderIcon if necessary 1802 if (textVisible) { 1803 ((FolderIcon) v).setTextVisible(true); 1804 } 1805 } 1806 destCanvas.restore(); 1807 } 1808 1809 /** 1810 * Returns a new bitmap to show when the given View is being dragged around. 1811 * Responsibility for the bitmap is transferred to the caller. 1812 */ 1813 public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1814 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1815 Bitmap b; 1816 1817 if (v instanceof TextView) { 1818 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1819 b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, 1820 d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); 1821 } else { 1822 b = Bitmap.createBitmap( 1823 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1824 } 1825 1826 canvas.setBitmap(b); 1827 drawDragView(v, canvas, padding, true); 1828 canvas.setBitmap(null); 1829 1830 return b; 1831 } 1832 1833 /** 1834 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1835 * Responsibility for the bitmap is transferred to the caller. 1836 */ 1837 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1838 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1839 final Bitmap b = Bitmap.createBitmap( 1840 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1841 1842 canvas.setBitmap(b); 1843 drawDragView(v, canvas, padding, true); 1844 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1845 canvas.setBitmap(null); 1846 return b; 1847 } 1848 1849 /** 1850 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1851 * Responsibility for the bitmap is transferred to the caller. 1852 */ 1853 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h, 1854 Paint alphaClipPaint) { 1855 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1856 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1857 canvas.setBitmap(b); 1858 1859 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 1860 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 1861 (h - padding) / (float) orig.getHeight()); 1862 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 1863 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 1864 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 1865 1866 // center the image 1867 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 1868 1869 canvas.drawBitmap(orig, src, dst, null); 1870 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor, 1871 alphaClipPaint); 1872 canvas.setBitmap(null); 1873 1874 return b; 1875 } 1876 1877 void startDrag(CellLayout.CellInfo cellInfo) { 1878 View child = cellInfo.cell; 1879 1880 // Make sure the drag was started by a long press as opposed to a long click. 1881 if (!child.isInTouchMode()) { 1882 return; 1883 } 1884 1885 mDragInfo = cellInfo; 1886 child.setVisibility(INVISIBLE); 1887 1888 child.clearFocus(); 1889 child.setPressed(false); 1890 1891 final Canvas canvas = new Canvas(); 1892 1893 // The outline is used to visualize where the item will land if dropped 1894 mDragOutline = createDragOutline(child, canvas, DRAG_BITMAP_PADDING); 1895 beginDragShared(child, this); 1896 } 1897 1898 public void beginDragShared(View child, DragSource source) { 1899 Resources r = getResources(); 1900 1901 // The drag bitmap follows the touch point around on the screen 1902 final Bitmap b = createDragBitmap(child, new Canvas(), DRAG_BITMAP_PADDING); 1903 1904 final int bmpWidth = b.getWidth(); 1905 final int bmpHeight = b.getHeight(); 1906 1907 mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 1908 int dragLayerX = 1909 Math.round(mTempXY[0] - (bmpWidth - child.getScaleX() * child.getWidth()) / 2); 1910 int dragLayerY = 1911 Math.round(mTempXY[1] - (bmpHeight - child.getScaleY() * bmpHeight) / 2 1912 - DRAG_BITMAP_PADDING / 2); 1913 1914 Point dragVisualizeOffset = null; 1915 Rect dragRect = null; 1916 if (child instanceof BubbleTextView || child instanceof PagedViewIcon) { 1917 int iconSize = r.getDimensionPixelSize(R.dimen.app_icon_size); 1918 int iconPaddingTop = r.getDimensionPixelSize(R.dimen.app_icon_padding_top); 1919 int top = child.getPaddingTop(); 1920 int left = (bmpWidth - iconSize) / 2; 1921 int right = left + iconSize; 1922 int bottom = top + iconSize; 1923 dragLayerY += top; 1924 // Note: The drag region is used to calculate drag layer offsets, but the 1925 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 1926 dragVisualizeOffset = new Point(-DRAG_BITMAP_PADDING / 2, 1927 iconPaddingTop - DRAG_BITMAP_PADDING / 2); 1928 dragRect = new Rect(left, top, right, bottom); 1929 } else if (child instanceof FolderIcon) { 1930 int previewSize = r.getDimensionPixelSize(R.dimen.folder_preview_size); 1931 dragRect = new Rect(0, 0, child.getWidth(), previewSize); 1932 } 1933 1934 // Clear the pressed state if necessary 1935 if (child instanceof BubbleTextView) { 1936 BubbleTextView icon = (BubbleTextView) child; 1937 icon.clearPressedOrFocusedBackground(); 1938 } 1939 1940 mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 1941 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect, child.getScaleX()); 1942 b.recycle(); 1943 1944 // Show the scrolling indicator when you pick up an item 1945 showScrollingIndicator(false); 1946 } 1947 1948 void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, int screen, 1949 int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { 1950 View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); 1951 1952 final int[] cellXY = new int[2]; 1953 target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1954 addInScreen(view, container, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1955 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, cellXY[0], 1956 cellXY[1]); 1957 } 1958 1959 public boolean transitionStateShouldAllowDrop() { 1960 return ((!isSwitchingState() || mTransitionProgress > 0.5f) && mState != State.SMALL); 1961 } 1962 1963 /** 1964 * {@inheritDoc} 1965 */ 1966 public boolean acceptDrop(DragObject d) { 1967 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1968 if (d.dragSource != this) { 1969 // Don't accept the drop if we're not over a screen at time of drop 1970 if (mDragTargetLayout == null) { 1971 return false; 1972 } 1973 if (!transitionStateShouldAllowDrop()) return false; 1974 1975 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 1976 d.dragView, mDragViewVisualCenter); 1977 1978 // We want the point to be mapped to the dragTarget. 1979 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 1980 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 1981 } else { 1982 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 1983 } 1984 1985 int spanX = 1; 1986 int spanY = 1; 1987 View ignoreView = null; 1988 if (mDragInfo != null) { 1989 final CellLayout.CellInfo dragCellInfo = mDragInfo; 1990 spanX = dragCellInfo.spanX; 1991 spanY = dragCellInfo.spanY; 1992 ignoreView = dragCellInfo.cell; 1993 } else { 1994 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 1995 spanX = dragInfo.spanX; 1996 spanY = dragInfo.spanY; 1997 } 1998 1999 int minSpanX = spanX; 2000 int minSpanY = spanY; 2001 if (d.dragInfo instanceof PendingAddWidgetInfo) { 2002 minSpanX = ((PendingAddWidgetInfo) d.dragInfo).minSpanX; 2003 minSpanY = ((PendingAddWidgetInfo) d.dragInfo).minSpanY; 2004 } 2005 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2006 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, mDragTargetLayout, 2007 mTargetCell); 2008 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, true)) { 2009 return true; 2010 } 2011 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, 2012 mTargetCell)) { 2013 return true; 2014 } 2015 2016 // Don't accept the drop if there's no room for the item 2017 if (!mDragTargetLayout.findCellForSpanIgnoring(null, minSpanX, minSpanY, ignoreView)) { 2018 // Don't show the message if we are dropping on the AllApps button and the hotseat 2019 // is full 2020 if (mTargetCell != null && mLauncher.isHotseatLayout(mDragTargetLayout)) { 2021 Hotseat hotseat = mLauncher.getHotseat(); 2022 if (hotseat.isAllAppsButtonRank( 2023 hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { 2024 return false; 2025 } 2026 } 2027 2028 mLauncher.showOutOfSpaceMessage(); 2029 return false; 2030 } 2031 } 2032 return true; 2033 } 2034 2035 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, 2036 boolean considerTimeout) { 2037 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2038 2039 boolean hasntMoved = false; 2040 if (mDragInfo != null) { 2041 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2042 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2043 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2044 } 2045 2046 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2047 return false; 2048 } 2049 2050 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2051 boolean willBecomeShortcut = 2052 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2053 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2054 2055 return (aboveShortcut && willBecomeShortcut); 2056 } 2057 2058 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell) { 2059 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2060 if (dropOverView instanceof FolderIcon) { 2061 FolderIcon fi = (FolderIcon) dropOverView; 2062 if (fi.acceptDrop(dragInfo)) { 2063 return true; 2064 } 2065 } 2066 return false; 2067 } 2068 2069 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2070 int[] targetCell, boolean external, DragView dragView, Runnable postAnimationRunnable) { 2071 View v = target.getChildAt(targetCell[0], targetCell[1]); 2072 boolean hasntMoved = false; 2073 if (mDragInfo != null) { 2074 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2075 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2076 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2077 } 2078 2079 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2080 mCreateUserFolderOnDrop = false; 2081 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 2082 2083 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2084 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2085 2086 if (aboveShortcut && willBecomeShortcut) { 2087 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2088 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2089 // if the drag started here, we need to remove it from the workspace 2090 if (!external) { 2091 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2092 } 2093 2094 Rect folderLocation = new Rect(); 2095 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2096 target.removeView(v); 2097 2098 FolderIcon fi = 2099 mLauncher.addFolder(target, container, screen, targetCell[0], targetCell[1]); 2100 destInfo.cellX = -1; 2101 destInfo.cellY = -1; 2102 sourceInfo.cellX = -1; 2103 sourceInfo.cellY = -1; 2104 2105 // If the dragView is null, we can't animate 2106 boolean animate = dragView != null; 2107 if (animate) { 2108 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2109 postAnimationRunnable); 2110 } else { 2111 fi.addItem(destInfo); 2112 fi.addItem(sourceInfo); 2113 } 2114 return true; 2115 } 2116 return false; 2117 } 2118 2119 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2120 DragObject d, boolean external) { 2121 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2122 if (dropOverView instanceof FolderIcon) { 2123 FolderIcon fi = (FolderIcon) dropOverView; 2124 if (fi.acceptDrop(d.dragInfo)) { 2125 fi.onDrop(d); 2126 2127 // if the drag started here, we need to remove it from the workspace 2128 if (!external) { 2129 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2130 } 2131 return true; 2132 } 2133 } 2134 return false; 2135 } 2136 2137 public void onDrop(final DragObject d) { 2138 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2139 mDragViewVisualCenter); 2140 2141 // We want the point to be mapped to the dragTarget. 2142 if (mDragTargetLayout != null) { 2143 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2144 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2145 } else { 2146 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2147 } 2148 } 2149 2150 CellLayout dropTargetLayout = mDragTargetLayout; 2151 2152 int snapScreen = -1; 2153 boolean resizeOnDrop = false; 2154 if (d.dragSource != this) { 2155 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2156 (int) mDragViewVisualCenter[1] }; 2157 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2158 } else if (mDragInfo != null) { 2159 final View cell = mDragInfo.cell; 2160 2161 Runnable resizeRunnable = null; 2162 if (dropTargetLayout != null) { 2163 // Move internally 2164 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2165 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2166 long container = hasMovedIntoHotseat ? 2167 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2168 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2169 int screen = (mTargetCell[0] < 0) ? 2170 mDragInfo.screen : indexOfChild(dropTargetLayout); 2171 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2172 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2173 // First we find the cell nearest to point at which the item is 2174 // dropped, without any consideration to whether there is an item there. 2175 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2176 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2177 // If the item being dropped is a shortcut and the nearest drop 2178 // cell also contains a shortcut, then create a folder with the two shortcuts. 2179 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2180 dropTargetLayout, mTargetCell, false, d.dragView, null)) { 2181 return; 2182 } 2183 2184 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, d, false)) { 2185 return; 2186 } 2187 2188 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2189 // we need to find the nearest cell location that is vacant 2190 ItemInfo item = (ItemInfo) d.dragInfo; 2191 int minSpanX = item.spanX; 2192 int minSpanY = item.spanY; 2193 if (item.minSpanX > 0 && item.minSpanY > 0) { 2194 minSpanX = item.minSpanX; 2195 minSpanY = item.minSpanY; 2196 } 2197 int[] resultSpan = new int[2]; 2198 mTargetCell = findNearestVacantArea((int) mDragViewVisualCenter[0], 2199 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, mDragInfo.spanX, 2200 mDragInfo.spanY, cell, dropTargetLayout, mTargetCell, resultSpan); 2201 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2202 if (foundCell && (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY)) { 2203 resizeOnDrop = true; 2204 item.spanX = resultSpan[0]; 2205 item.spanY = resultSpan[1]; 2206 } 2207 2208 if (mCurrentPage != screen && !hasMovedIntoHotseat) { 2209 snapScreen = screen; 2210 snapToPage(screen); 2211 } 2212 2213 if (foundCell) { 2214 final ItemInfo info = (ItemInfo) cell.getTag(); 2215 if (hasMovedLayouts) { 2216 // Reparent the view 2217 getParentCellLayoutForView(cell).removeView(cell); 2218 addInScreen(cell, container, screen, mTargetCell[0], mTargetCell[1], 2219 info.spanX, info.spanY); 2220 } 2221 2222 // update the item's position after drop 2223 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2224 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1], 2225 item.spanX, item.spanY); 2226 lp.cellX = mTargetCell[0]; 2227 lp.cellY = mTargetCell[1]; 2228 lp.cellHSpan = item.spanX; 2229 lp.cellVSpan = item.spanY; 2230 cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screen, 2231 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2232 2233 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2234 cell instanceof LauncherAppWidgetHostView) { 2235 final CellLayout cellLayout = dropTargetLayout; 2236 // We post this call so that the widget has a chance to be placed 2237 // in its final location 2238 2239 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2240 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2241 if (pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2242 final Runnable addResizeFrame = new Runnable() { 2243 public void run() { 2244 DragLayer dragLayer = mLauncher.getDragLayer(); 2245 dragLayer.addResizeFrame(info, hostView, cellLayout); 2246 } 2247 }; 2248 resizeRunnable = (new Runnable() { 2249 public void run() { 2250 if (!isPageMoving()) { 2251 addResizeFrame.run(); 2252 } else { 2253 mDelayedResizeRunnable = addResizeFrame; 2254 } 2255 } 2256 }); 2257 } 2258 } 2259 2260 LauncherModel.moveItemInDatabase(mLauncher, info, container, screen, lp.cellX, 2261 lp.cellY); 2262 } else { 2263 // If we can't find a drop location, we return the item to its original position 2264 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2265 mTargetCell[0] = lp.cellX; 2266 mTargetCell[1] = lp.cellY; 2267 } 2268 } 2269 2270 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2271 final Runnable finalResizeRunnable = resizeRunnable; 2272 // Prepare it to be animated into its new position 2273 // This must be called after the view has been re-parented 2274 final Runnable onCompleteRunnable = new Runnable() { 2275 @Override 2276 public void run() { 2277 mAnimatingViewIntoPlace = false; 2278 updateChildrenLayersEnabled(); 2279 if (finalResizeRunnable != null) { 2280 finalResizeRunnable.run(); 2281 } 2282 } 2283 }; 2284 mAnimatingViewIntoPlace = true; 2285 if (d.dragView.hasDrawn()) { 2286 final ItemInfo info = (ItemInfo) cell.getTag(); 2287 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET) { 2288 int animationType = resizeOnDrop ? ANIMATE_INTO_POSITION_AND_RESIZE : 2289 ANIMATE_INTO_POSITION_AND_DISAPPEAR; 2290 animateWidgetDrop(info, parent, d.dragView, 2291 onCompleteRunnable, animationType, cell, false); 2292 } else { 2293 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2294 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2295 onCompleteRunnable, this); 2296 } 2297 } else { 2298 d.deferDragViewCleanupPostAnimation = false; 2299 cell.setVisibility(VISIBLE); 2300 } 2301 parent.onDropChild(cell); 2302 } 2303 } 2304 2305 public void setFinalScrollForPageChange(int screen) { 2306 if (screen >= 0) { 2307 mSavedScrollX = getScrollX(); 2308 CellLayout cl = (CellLayout) getChildAt(screen); 2309 mSavedTranslationX = cl.getTranslationX(); 2310 mSavedRotationY = cl.getRotationY(); 2311 final int newX = getChildOffset(screen) - getRelativeChildOffset(screen); 2312 setScrollX(newX); 2313 cl.setTranslationX(0f); 2314 cl.setRotationY(0f); 2315 } 2316 } 2317 2318 public void resetFinalScrollForPageChange(int screen) { 2319 if (screen >= 0) { 2320 CellLayout cl = (CellLayout) getChildAt(screen); 2321 setScrollX(mSavedScrollX); 2322 cl.setTranslationX(mSavedTranslationX); 2323 cl.setRotationY(mSavedRotationY); 2324 } 2325 } 2326 2327 public void getViewLocationRelativeToSelf(View v, int[] location) { 2328 getLocationInWindow(location); 2329 int x = location[0]; 2330 int y = location[1]; 2331 2332 v.getLocationInWindow(location); 2333 int vX = location[0]; 2334 int vY = location[1]; 2335 2336 location[0] = vX - x; 2337 location[1] = vY - y; 2338 } 2339 2340 public void onDragEnter(DragObject d) { 2341 mDragHasEnteredWorkspace = true; 2342 if (mDragTargetLayout != null) { 2343 mDragTargetLayout.setIsDragOverlapping(false); 2344 mDragTargetLayout.onDragExit(); 2345 } 2346 mDragTargetLayout = getCurrentDropLayout(); 2347 mDragTargetLayout.setIsDragOverlapping(true); 2348 mDragTargetLayout.onDragEnter(); 2349 2350 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2351 // don't need to show the outlines 2352 if (LauncherApplication.isScreenLarge()) { 2353 showOutlines(); 2354 } 2355 } 2356 2357 private void doDragExit(DragObject d) { 2358 // Clean up folders 2359 cleanupFolderCreation(d); 2360 2361 // Reset the scroll area and previous drag target 2362 onResetScrollArea(); 2363 2364 if (mDragTargetLayout != null) { 2365 mDragTargetLayout.setIsDragOverlapping(false); 2366 mDragTargetLayout.onDragExit(); 2367 } 2368 mLastDragOverView = null; 2369 mSpringLoadedDragController.cancel(); 2370 2371 if (!mIsPageMoving) { 2372 hideOutlines(); 2373 } 2374 } 2375 2376 public void onDragExit(DragObject d) { 2377 mDragHasEnteredWorkspace = false; 2378 doDragExit(d); 2379 } 2380 2381 public DropTarget getDropTargetDelegate(DragObject d) { 2382 return null; 2383 } 2384 2385 /** 2386 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 2387 * in the returned structure related to the widgets that match the drop (or a null list if it is 2388 * a shortcut drop). If the drop is not accepted then a null structure is returned. 2389 */ 2390 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 2391 final LauncherModel model = mLauncher.getModel(); 2392 final ClipDescription desc = event.getClipDescription(); 2393 final int mimeTypeCount = desc.getMimeTypeCount(); 2394 for (int i = 0; i < mimeTypeCount; ++i) { 2395 final String mimeType = desc.getMimeType(i); 2396 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 2397 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 2398 } else { 2399 final List<WidgetMimeTypeHandlerData> widgets = 2400 model.resolveWidgetsForMimeType(mContext, mimeType); 2401 if (widgets.size() > 0) { 2402 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 2403 } 2404 } 2405 } 2406 return null; 2407 } 2408 2409 /* 2410 * 2411 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2412 * coordinate space. The argument xy is modified with the return result. 2413 * 2414 */ 2415 void mapPointFromSelfToChild(View v, float[] xy) { 2416 mapPointFromSelfToChild(v, xy, null); 2417 } 2418 2419 /* 2420 * 2421 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2422 * coordinate space. The argument xy is modified with the return result. 2423 * 2424 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2425 * computing it itself; we use this to avoid redundant matrix inversions in 2426 * findMatchingPageForDragOver 2427 * 2428 */ 2429 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2430 if (cachedInverseMatrix == null) { 2431 v.getMatrix().invert(mTempInverseMatrix); 2432 cachedInverseMatrix = mTempInverseMatrix; 2433 } 2434 int scrollX = mScrollX; 2435 if (mNextPage != INVALID_PAGE) { 2436 scrollX = mScroller.getFinalX(); 2437 } 2438 xy[0] = xy[0] + scrollX - v.getLeft(); 2439 xy[1] = xy[1] + mScrollY - v.getTop(); 2440 cachedInverseMatrix.mapPoints(xy); 2441 } 2442 2443 /* 2444 * Maps a point from the Workspace's coordinate system to another sibling view's. (Workspace 2445 * covers the full screen) 2446 */ 2447 void mapPointFromSelfToSibling(View v, float[] xy) { 2448 xy[0] = xy[0] - v.getLeft(); 2449 xy[1] = xy[1] - v.getTop(); 2450 } 2451 2452 /* 2453 * 2454 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2455 * the parent View's coordinate space. The argument xy is modified with the return result. 2456 * 2457 */ 2458 void mapPointFromChildToSelf(View v, float[] xy) { 2459 v.getMatrix().mapPoints(xy); 2460 int scrollX = mScrollX; 2461 if (mNextPage != INVALID_PAGE) { 2462 scrollX = mScroller.getFinalX(); 2463 } 2464 xy[0] -= (scrollX - v.getLeft()); 2465 xy[1] -= (mScrollY - v.getTop()); 2466 } 2467 2468 static private float squaredDistance(float[] point1, float[] point2) { 2469 float distanceX = point1[0] - point2[0]; 2470 float distanceY = point2[1] - point2[1]; 2471 return distanceX * distanceX + distanceY * distanceY; 2472 } 2473 2474 /* 2475 * 2476 * Returns true if the passed CellLayout cl overlaps with dragView 2477 * 2478 */ 2479 boolean overlaps(CellLayout cl, DragView dragView, 2480 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2481 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2482 final float[] draggedItemTopLeft = mTempDragCoordinates; 2483 draggedItemTopLeft[0] = dragViewX; 2484 draggedItemTopLeft[1] = dragViewY; 2485 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2486 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2487 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2488 2489 // Transform the dragged item's top left coordinates 2490 // to the CellLayout's local coordinates 2491 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2492 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2493 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2494 2495 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2496 // Transform the dragged item's bottom right coordinates 2497 // to the CellLayout's local coordinates 2498 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2499 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2500 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2501 2502 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2503 float overlap = (overlapRegionRight - overlapRegionLeft) * 2504 (overlapRegionBottom - overlapRegionTop); 2505 if (overlap > 0) { 2506 return true; 2507 } 2508 } 2509 } 2510 return false; 2511 } 2512 2513 /* 2514 * 2515 * This method returns the CellLayout that is currently being dragged to. In order to drag 2516 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2517 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2518 * 2519 * Return null if no CellLayout is currently being dragged over 2520 * 2521 */ 2522 private CellLayout findMatchingPageForDragOver( 2523 DragView dragView, float originX, float originY, boolean exact) { 2524 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2525 // with the item being dragged and then choose the one that's closest to the touch point 2526 final int screenCount = getChildCount(); 2527 CellLayout bestMatchingScreen = null; 2528 float smallestDistSoFar = Float.MAX_VALUE; 2529 2530 for (int i = 0; i < screenCount; i++) { 2531 CellLayout cl = (CellLayout) getChildAt(i); 2532 2533 final float[] touchXy = {originX, originY}; 2534 // Transform the touch coordinates to the CellLayout's local coordinates 2535 // If the touch point is within the bounds of the cell layout, we can return immediately 2536 cl.getMatrix().invert(mTempInverseMatrix); 2537 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2538 2539 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2540 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2541 return cl; 2542 } 2543 2544 if (!exact) { 2545 // Get the center of the cell layout in screen coordinates 2546 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2547 cellLayoutCenter[0] = cl.getWidth()/2; 2548 cellLayoutCenter[1] = cl.getHeight()/2; 2549 mapPointFromChildToSelf(cl, cellLayoutCenter); 2550 2551 touchXy[0] = originX; 2552 touchXy[1] = originY; 2553 2554 // Calculate the distance between the center of the CellLayout 2555 // and the touch point 2556 float dist = squaredDistance(touchXy, cellLayoutCenter); 2557 2558 if (dist < smallestDistSoFar) { 2559 smallestDistSoFar = dist; 2560 bestMatchingScreen = cl; 2561 } 2562 } 2563 } 2564 return bestMatchingScreen; 2565 } 2566 2567 // This is used to compute the visual center of the dragView. This point is then 2568 // used to visualize drop locations and determine where to drop an item. The idea is that 2569 // the visual center represents the user's interpretation of where the item is, and hence 2570 // is the appropriate point to use when determining drop location. 2571 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2572 DragView dragView, float[] recycle) { 2573 float res[]; 2574 if (recycle == null) { 2575 res = new float[2]; 2576 } else { 2577 res = recycle; 2578 } 2579 2580 // First off, the drag view has been shifted in a way that is not represented in the 2581 // x and y values or the x/yOffsets. Here we account for that shift. 2582 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2583 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2584 2585 // These represent the visual top and left of drag view if a dragRect was provided. 2586 // If a dragRect was not provided, then they correspond to the actual view left and 2587 // top, as the dragRect is in that case taken to be the entire dragView. 2588 // R.dimen.dragViewOffsetY. 2589 int left = x - xOffset; 2590 int top = y - yOffset; 2591 2592 // In order to find the visual center, we shift by half the dragRect 2593 res[0] = left + dragView.getDragRegion().width() / 2; 2594 res[1] = top + dragView.getDragRegion().height() / 2; 2595 2596 return res; 2597 } 2598 2599 private boolean isDragWidget(DragObject d) { 2600 return (d.dragInfo instanceof LauncherAppWidgetInfo || 2601 d.dragInfo instanceof PendingAddWidgetInfo); 2602 } 2603 private boolean isExternalDragWidget(DragObject d) { 2604 return d.dragSource != this && isDragWidget(d); 2605 } 2606 2607 public void onDragOver(DragObject d) { 2608 // Skip drag over events while we are dragging over side pages 2609 if (mInScrollArea || mIsSwitchingState || mState == State.SMALL) return; 2610 2611 Rect r = new Rect(); 2612 CellLayout layout = null; 2613 ItemInfo item = (ItemInfo) d.dragInfo; 2614 2615 // Ensure that we have proper spans for the item that we are dropping 2616 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2617 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2618 d.dragView, mDragViewVisualCenter); 2619 2620 // Identify whether we have dragged over a side page 2621 if (isSmall()) { 2622 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 2623 mLauncher.getHotseat().getHitRect(r); 2624 if (r.contains(d.x, d.y)) { 2625 layout = mLauncher.getHotseat().getLayout(); 2626 } 2627 } 2628 if (layout == null) { 2629 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false); 2630 } 2631 if (layout != mDragTargetLayout) { 2632 // Cancel all intermediate folder states 2633 cleanupFolderCreation(d); 2634 2635 if (mDragTargetLayout != null) { 2636 mDragTargetLayout.setIsDragOverlapping(false); 2637 mDragTargetLayout.onDragExit(); 2638 } 2639 mDragTargetLayout = layout; 2640 if (mDragTargetLayout != null) { 2641 mDragTargetLayout.setIsDragOverlapping(true); 2642 mDragTargetLayout.onDragEnter(); 2643 } else { 2644 mLastDragOverView = null; 2645 } 2646 2647 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 2648 if (isInSpringLoadedMode) { 2649 if (mLauncher.isHotseatLayout(layout)) { 2650 mSpringLoadedDragController.cancel(); 2651 } else { 2652 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2653 } 2654 } 2655 } 2656 } else { 2657 // Test to see if we are over the hotseat otherwise just use the current page 2658 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 2659 mLauncher.getHotseat().getHitRect(r); 2660 if (r.contains(d.x, d.y)) { 2661 layout = mLauncher.getHotseat().getLayout(); 2662 } 2663 } 2664 if (layout == null) { 2665 layout = getCurrentDropLayout(); 2666 } 2667 if (layout != mDragTargetLayout) { 2668 if (mDragTargetLayout != null) { 2669 mDragTargetLayout.setIsDragOverlapping(false); 2670 mDragTargetLayout.onDragExit(); 2671 } 2672 mDragTargetLayout = layout; 2673 mDragTargetLayout.setIsDragOverlapping(true); 2674 mDragTargetLayout.onDragEnter(); 2675 } 2676 } 2677 2678 // Handle the drag over 2679 if (mDragTargetLayout != null) { 2680 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2681 2682 // We want the point to be mapped to the dragTarget. 2683 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2684 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2685 } else { 2686 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2687 } 2688 ItemInfo info = (ItemInfo) d.dragInfo; 2689 2690 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2691 (int) mDragViewVisualCenter[1], 1, 1, mDragTargetLayout, mTargetCell); 2692 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2693 mTargetCell[1]); 2694 2695 boolean userFolderPending = willCreateUserFolder(info, mDragTargetLayout, 2696 mTargetCell, false); 2697 boolean isOverFolder = dragOverView instanceof FolderIcon; 2698 if (dragOverView != mLastDragOverView) { 2699 cancelFolderCreation(); 2700 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2701 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2702 } 2703 } 2704 2705 if (userFolderPending && dragOverView != mLastDragOverView) { 2706 mFolderCreationAlarm.setOnAlarmListener(new 2707 FolderCreationAlarmListener(mDragTargetLayout, mTargetCell[0], mTargetCell[1])); 2708 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2709 } 2710 2711 if (dragOverView != mLastDragOverView && isOverFolder) { 2712 ((FolderIcon) dragOverView).onDragEnter(d.dragInfo); 2713 if (mDragTargetLayout != null) { 2714 mDragTargetLayout.clearDragOutlines(); 2715 } 2716 } 2717 mLastDragOverView = dragOverView; 2718 2719 if (!mCreateUserFolderOnDrop && !isOverFolder) { 2720 int minSpanX = item.spanX; 2721 int minSpanY = item.spanY; 2722 if (item.minSpanX > 0 && item.minSpanY > 0) { 2723 minSpanX = item.minSpanX; 2724 minSpanY = item.minSpanY; 2725 } 2726 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2727 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2728 minSpanX, minSpanY, item.spanX, item.spanY, 2729 d.dragView.getDragVisualizeOffset(), d.dragView.getDragRegion()); 2730 } 2731 } 2732 } 2733 2734 private void cleanupFolderCreation(DragObject d) { 2735 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2736 mDragFolderRingAnimator.animateToNaturalState(); 2737 } 2738 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2739 if (d != null) { 2740 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2741 } 2742 } 2743 mFolderCreationAlarm.cancelAlarm(); 2744 } 2745 2746 private void cancelFolderCreation() { 2747 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2748 mDragFolderRingAnimator.animateToNaturalState(); 2749 } 2750 mCreateUserFolderOnDrop = false; 2751 mFolderCreationAlarm.cancelAlarm(); 2752 } 2753 2754 class FolderCreationAlarmListener implements OnAlarmListener { 2755 CellLayout layout; 2756 int cellX; 2757 int cellY; 2758 2759 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 2760 this.layout = layout; 2761 this.cellX = cellX; 2762 this.cellY = cellY; 2763 } 2764 2765 public void onAlarm(Alarm alarm) { 2766 if (mDragFolderRingAnimator == null) { 2767 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 2768 } 2769 mDragFolderRingAnimator.setCell(cellX, cellY); 2770 mDragFolderRingAnimator.setCellLayout(layout); 2771 mDragFolderRingAnimator.animateToAcceptState(); 2772 layout.showFolderAccept(mDragFolderRingAnimator); 2773 layout.clearDragOutlines(); 2774 mCreateUserFolderOnDrop = true; 2775 } 2776 } 2777 2778 @Override 2779 public void getHitRect(Rect outRect) { 2780 // We want the workspace to have the whole area of the display (it will find the correct 2781 // cell layout to drop to in the existing drag/drop logic. 2782 outRect.set(0, 0, mDisplayWidth, mDisplayHeight); 2783 } 2784 2785 /** 2786 * Add the item specified by dragInfo to the given layout. 2787 * @return true if successful 2788 */ 2789 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2790 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2791 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2792 return true; 2793 } 2794 mLauncher.showOutOfSpaceMessage(); 2795 return false; 2796 } 2797 2798 private void onDropExternal(int[] touchXY, Object dragInfo, 2799 CellLayout cellLayout, boolean insertAtFirst) { 2800 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 2801 } 2802 2803 /** 2804 * Drop an item that didn't originate on one of the workspace screens. 2805 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2806 * come from another app altogether. 2807 * 2808 * NOTE: This can also be called when we are outside of a drag event, when we want 2809 * to add an item to one of the workspace screens. 2810 */ 2811 private void onDropExternal(final int[] touchXY, final Object dragInfo, 2812 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 2813 final Runnable exitSpringLoadedRunnable = new Runnable() { 2814 @Override 2815 public void run() { 2816 mLauncher.exitSpringLoadedDragModeDelayed(true, false, null); 2817 } 2818 }; 2819 2820 ItemInfo info = (ItemInfo) dragInfo; 2821 int spanX = info.spanX; 2822 int spanY = info.spanY; 2823 if (mDragInfo != null) { 2824 spanX = mDragInfo.spanX; 2825 spanY = mDragInfo.spanY; 2826 } 2827 2828 final long container = mLauncher.isHotseatLayout(cellLayout) ? 2829 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2830 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2831 final int screen = indexOfChild(cellLayout); 2832 if (!mLauncher.isHotseatLayout(cellLayout) && screen != mCurrentPage 2833 && mState != State.SPRING_LOADED) { 2834 snapToPage(screen); 2835 } 2836 2837 if (info instanceof PendingAddItemInfo) { 2838 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 2839 2840 boolean findNearestVacantCell = true; 2841 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 2842 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 2843 cellLayout, mTargetCell); 2844 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, 2845 true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 2846 mDragTargetLayout, mTargetCell)) { 2847 findNearestVacantCell = false; 2848 } 2849 } 2850 final ItemInfo item = (ItemInfo) d.dragInfo; 2851 int minSpanX = item.spanX; 2852 int minSpanY = item.spanY; 2853 if (item.minSpanX > 0 && item.minSpanY > 0) { 2854 minSpanX = item.minSpanX; 2855 minSpanY = item.minSpanY; 2856 } 2857 if (findNearestVacantCell) { 2858 int[] resultSpan = new int[2]; 2859 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], minSpanX, minSpanY, 2860 spanX, spanY, null, cellLayout, mTargetCell, resultSpan); 2861 item.spanX = resultSpan[0]; 2862 item.spanY = resultSpan[1]; 2863 } 2864 2865 Runnable onAnimationCompleteRunnable = new Runnable() { 2866 @Override 2867 public void run() { 2868 // When dragging and dropping from customization tray, we deal with creating 2869 // widgets/shortcuts/folders in a slightly different way 2870 switch (pendingInfo.itemType) { 2871 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 2872 int span[] = new int[2]; 2873 span[0] = item.spanX; 2874 span[1] = item.spanY; 2875 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, 2876 container, screen, mTargetCell, span, null); 2877 break; 2878 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2879 mLauncher.processShortcutFromDrop(pendingInfo.componentName, 2880 container, screen, mTargetCell, null); 2881 break; 2882 default: 2883 throw new IllegalStateException("Unknown item type: " + 2884 pendingInfo.itemType); 2885 } 2886 cellLayout.onDragExit(); 2887 } 2888 }; 2889 View finalView = pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET 2890 ? ((PendingAddWidgetInfo) pendingInfo).boundWidget : null; 2891 int animationStyle = ANIMATE_INTO_POSITION_AND_DISAPPEAR; 2892 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && 2893 ((PendingAddWidgetInfo) pendingInfo).info.configure != null) { 2894 animationStyle = ANIMATE_INTO_POSITION_AND_REMAIN; 2895 } 2896 animateWidgetDrop(info, cellLayout, d.dragView, onAnimationCompleteRunnable, 2897 animationStyle, finalView, true); 2898 } else { 2899 // This is for other drag/drop cases, like dragging from All Apps 2900 View view = null; 2901 2902 switch (info.itemType) { 2903 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 2904 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2905 if (info.container == NO_ID && info instanceof ApplicationInfo) { 2906 // Came from all apps -- make a copy 2907 info = new ShortcutInfo((ApplicationInfo) info); 2908 } 2909 view = mLauncher.createShortcut(R.layout.application, cellLayout, 2910 (ShortcutInfo) info); 2911 break; 2912 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 2913 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 2914 (FolderInfo) info, mIconCache); 2915 break; 2916 default: 2917 throw new IllegalStateException("Unknown item type: " + info.itemType); 2918 } 2919 2920 // First we find the cell nearest to point at which the item is 2921 // dropped, without any consideration to whether there is an item there. 2922 if (touchXY != null) { 2923 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 2924 cellLayout, mTargetCell); 2925 d.postAnimationRunnable = exitSpringLoadedRunnable; 2926 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, true, 2927 d.dragView, d.postAnimationRunnable)) { 2928 return; 2929 } 2930 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, d, true)) { 2931 return; 2932 } 2933 } 2934 2935 if (touchXY != null) { 2936 // when dragging and dropping, just find the closest free spot 2937 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], 1, 1, null, 2938 cellLayout, mTargetCell); 2939 } else { 2940 cellLayout.findCellForSpan(mTargetCell, 1, 1); 2941 } 2942 addInScreen(view, container, screen, mTargetCell[0], mTargetCell[1], info.spanX, 2943 info.spanY, insertAtFirst); 2944 cellLayout.onDropChild(view); 2945 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2946 cellLayout.getChildrenLayout().measureChild(view); 2947 2948 2949 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, 2950 lp.cellX, lp.cellY); 2951 2952 if (d.dragView != null) { 2953 // We wrap the animation call in the temporary set and reset of the current 2954 // cellLayout to its final transform -- this means we animate the drag view to 2955 // the correct final location. 2956 setFinalTransitionTransform(cellLayout); 2957 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 2958 exitSpringLoadedRunnable); 2959 resetTransitionTransform(cellLayout); 2960 } 2961 } 2962 } 2963 2964 public Bitmap createWidgetBitmap(ItemInfo widgetInfo, View layout) { 2965 int[] unScaledSize = mLauncher.getWorkspace().estimateItemSize(widgetInfo.spanX, 2966 widgetInfo.spanY, widgetInfo, false); 2967 int visibility = layout.getVisibility(); 2968 layout.setVisibility(VISIBLE); 2969 2970 int width = MeasureSpec.makeMeasureSpec(unScaledSize[0], MeasureSpec.EXACTLY); 2971 int height = MeasureSpec.makeMeasureSpec(unScaledSize[1], MeasureSpec.EXACTLY); 2972 Bitmap b = Bitmap.createBitmap(unScaledSize[0], unScaledSize[1], 2973 Bitmap.Config.ARGB_8888); 2974 Canvas c = new Canvas(b); 2975 2976 layout.measure(width, height); 2977 layout.layout(0, 0, unScaledSize[0], unScaledSize[1]); 2978 layout.draw(c); 2979 c.setBitmap(null); 2980 layout.setVisibility(visibility); 2981 return b; 2982 } 2983 2984 private void getFinalPositionForDropAnimation(int[] loc, float[] scaleXY, 2985 DragView dragView, CellLayout layout, ItemInfo info, int[] targetCell, View finalView, 2986 boolean external) { 2987 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 2988 // location and size on the home screen. 2989 int spanX = info.spanX; 2990 int spanY = info.spanY; 2991 2992 Rect r = estimateItemPosition(layout, info, targetCell[0], targetCell[1], spanX, spanY); 2993 loc[0] = r.left; 2994 loc[1] = r.top; 2995 2996 setFinalTransitionTransform(layout); 2997 float cellLayoutScale = 2998 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(layout, loc); 2999 resetTransitionTransform(layout); 3000 float dragViewScaleX = (1.0f * r.width()) / dragView.getMeasuredWidth(); 3001 float dragViewScaleY = (1.0f * r.height()) / dragView.getMeasuredHeight(); 3002 3003 // The animation will scale the dragView about its center, so we need to center about 3004 // the final location. 3005 loc[0] -= (dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 3006 loc[1] -= (dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 3007 3008 scaleXY[0] = dragViewScaleX * cellLayoutScale; 3009 scaleXY[1] = dragViewScaleY * cellLayoutScale; 3010 } 3011 3012 public void animateWidgetDrop(ItemInfo info, CellLayout cellLayout, DragView dragView, 3013 final Runnable onCompleteRunnable, int animationType, final View finalView, 3014 boolean external) { 3015 Rect from = new Rect(); 3016 mLauncher.getDragLayer().getViewRectRelativeToSelf(dragView, from); 3017 3018 int[] finalPos = new int[2]; 3019 float scaleXY[] = new float[2]; 3020 getFinalPositionForDropAnimation(finalPos, scaleXY, dragView, cellLayout, info, mTargetCell, 3021 finalView, external); 3022 3023 Resources res = mLauncher.getResources(); 3024 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration) - 200; 3025 3026 // In the case where we've prebound the widget, we remove it from the DragLayer 3027 if (finalView instanceof AppWidgetHostView && external) { 3028 mLauncher.getDragLayer().removeView(finalView); 3029 } 3030 if ((animationType == ANIMATE_INTO_POSITION_AND_RESIZE || external) && finalView != null) { 3031 Bitmap crossFadeBitmap = createWidgetBitmap(info, finalView); 3032 dragView.setCrossFadeBitmap(crossFadeBitmap); 3033 dragView.crossFade((int) (duration * 0.8f)); 3034 } else if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && external) { 3035 scaleXY[0] = scaleXY[1] = Math.min(scaleXY[0], scaleXY[1]); 3036 } 3037 3038 DragLayer dragLayer = mLauncher.getDragLayer(); 3039 if (animationType == CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION) { 3040 mLauncher.getDragLayer().animateViewIntoPosition(dragView, finalPos, 0f, 0.1f, 0.1f, 3041 DragLayer.ANIMATION_END_DISAPPEAR, onCompleteRunnable, duration); 3042 } else { 3043 int endStyle; 3044 if (animationType == ANIMATE_INTO_POSITION_AND_REMAIN) { 3045 endStyle = DragLayer.ANIMATION_END_REMAIN_VISIBLE; 3046 } else { 3047 endStyle = DragLayer.ANIMATION_END_DISAPPEAR;; 3048 } 3049 3050 Runnable onComplete = new Runnable() { 3051 @Override 3052 public void run() { 3053 if (finalView != null) { 3054 finalView.setVisibility(VISIBLE); 3055 } 3056 if (onCompleteRunnable != null) { 3057 onCompleteRunnable.run(); 3058 } 3059 } 3060 }; 3061 dragLayer.animateViewIntoPosition(dragView, from.left, from.top, finalPos[0], 3062 finalPos[1], 1, 1, 1, scaleXY[0], scaleXY[1], onComplete, endStyle, 3063 duration, this); 3064 } 3065 } 3066 3067 public void setFinalTransitionTransform(CellLayout layout) { 3068 if (isSwitchingState()) { 3069 int index = indexOfChild(layout); 3070 mCurrentScaleX = layout.getScaleX(); 3071 mCurrentScaleY = layout.getScaleY(); 3072 mCurrentTranslationX = layout.getTranslationX(); 3073 mCurrentTranslationY = layout.getTranslationY(); 3074 mCurrentRotationY = layout.getRotationY(); 3075 layout.setScaleX(mNewScaleXs[index]); 3076 layout.setScaleY(mNewScaleYs[index]); 3077 layout.setTranslationX(mNewTranslationXs[index]); 3078 layout.setTranslationY(mNewTranslationYs[index]); 3079 layout.setRotationY(mNewRotationYs[index]); 3080 } 3081 } 3082 public void resetTransitionTransform(CellLayout layout) { 3083 if (isSwitchingState()) { 3084 mCurrentScaleX = layout.getScaleX(); 3085 mCurrentScaleY = layout.getScaleY(); 3086 mCurrentTranslationX = layout.getTranslationX(); 3087 mCurrentTranslationY = layout.getTranslationY(); 3088 mCurrentRotationY = layout.getRotationY(); 3089 layout.setScaleX(mCurrentScaleX); 3090 layout.setScaleY(mCurrentScaleY); 3091 layout.setTranslationX(mCurrentTranslationX); 3092 layout.setTranslationY(mCurrentTranslationY); 3093 layout.setRotationY(mCurrentRotationY); 3094 } 3095 } 3096 3097 /** 3098 * Return the current {@link CellLayout}, correctly picking the destination 3099 * screen while a scroll is in progress. 3100 */ 3101 public CellLayout getCurrentDropLayout() { 3102 return (CellLayout) getChildAt(mNextPage == INVALID_PAGE ? mCurrentPage : mNextPage); 3103 } 3104 3105 /** 3106 * Return the current CellInfo describing our current drag; this method exists 3107 * so that Launcher can sync this object with the correct info when the activity is created/ 3108 * destroyed 3109 * 3110 */ 3111 public CellLayout.CellInfo getDragInfo() { 3112 return mDragInfo; 3113 } 3114 3115 /** 3116 * Calculate the nearest cell where the given object would be dropped. 3117 * 3118 * pixelX and pixelY should be in the coordinate system of layout 3119 */ 3120 private int[] findNearestVacantArea(int pixelX, int pixelY, 3121 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 3122 return layout.findNearestVacantArea( 3123 pixelX, pixelY, spanX, spanY, spanX, spanY, ignoreView, recycle, null); 3124 } 3125 3126 /** 3127 * Calculate the nearest cell where the given object would be dropped. 3128 * 3129 * pixelX and pixelY should be in the coordinate system of layout 3130 */ 3131 private int[] findNearestVacantArea(int pixelX, int pixelY, int minSpanX, int minSpanY, 3132 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle, 3133 int[] returnSpan) { 3134 return layout.findNearestVacantArea( 3135 pixelX, pixelY, minSpanX, minSpanY, spanX, spanY, ignoreView, recycle, returnSpan); 3136 } 3137 3138 /** 3139 * Calculate the nearest cell where the given object would be dropped. 3140 * 3141 * pixelX and pixelY should be in the coordinate system of layout 3142 */ 3143 private int[] findNearestArea(int pixelX, int pixelY, 3144 int spanX, int spanY, CellLayout layout, int[] recycle) { 3145 return layout.findNearestArea( 3146 pixelX, pixelY, spanX, spanY, recycle); 3147 } 3148 3149 void setup(DragController dragController) { 3150 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3151 mDragController = dragController; 3152 3153 // hardware layers on children are enabled on startup, but should be disabled until 3154 // needed 3155 updateChildrenLayersEnabled(); 3156 setWallpaperDimension(); 3157 } 3158 3159 /** 3160 * Called at the end of a drag which originated on the workspace. 3161 */ 3162 public void onDropCompleted(View target, DragObject d, boolean success) { 3163 if (success) { 3164 if (target != this) { 3165 if (mDragInfo != null) { 3166 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 3167 if (mDragInfo.cell instanceof DropTarget) { 3168 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 3169 } 3170 } 3171 } 3172 } else if (mDragInfo != null) { 3173 // NOTE: When 'success' is true, onDragExit is called by the DragController before 3174 // calling onDropCompleted(). We call it ourselves here, but maybe this should be 3175 // moved into DragController.cancelDrag(). 3176 doDragExit(null); 3177 CellLayout cellLayout; 3178 if (mLauncher.isHotseatLayout(target)) { 3179 cellLayout = mLauncher.getHotseat().getLayout(); 3180 } else { 3181 cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3182 } 3183 cellLayout.onDropChild(mDragInfo.cell); 3184 } 3185 if (d.cancelled && mDragInfo.cell != null) { 3186 mDragInfo.cell.setVisibility(VISIBLE); 3187 } 3188 mDragOutline = null; 3189 mDragInfo = null; 3190 3191 // Hide the scrolling indicator after you pick up an item 3192 hideScrollingIndicator(false); 3193 } 3194 3195 public boolean isDropEnabled() { 3196 return true; 3197 } 3198 3199 @Override 3200 protected void onRestoreInstanceState(Parcelable state) { 3201 super.onRestoreInstanceState(state); 3202 Launcher.setScreen(mCurrentPage); 3203 } 3204 3205 @Override 3206 public void scrollLeft() { 3207 if (!isSmall() && !mIsSwitchingState) { 3208 super.scrollLeft(); 3209 } 3210 Folder openFolder = getOpenFolder(); 3211 if (openFolder != null) { 3212 openFolder.completeDragExit(); 3213 } 3214 } 3215 3216 @Override 3217 public void scrollRight() { 3218 if (!isSmall() && !mIsSwitchingState) { 3219 super.scrollRight(); 3220 } 3221 Folder openFolder = getOpenFolder(); 3222 if (openFolder != null) { 3223 openFolder.completeDragExit(); 3224 } 3225 } 3226 3227 @Override 3228 public boolean onEnterScrollArea(int x, int y, int direction) { 3229 // Ignore the scroll area if we are dragging over the hot seat 3230 if (mLauncher.getHotseat() != null) { 3231 Rect r = new Rect(); 3232 mLauncher.getHotseat().getHitRect(r); 3233 if (r.contains(x, y)) { 3234 return false; 3235 } 3236 } 3237 3238 boolean result = false; 3239 if (!isSmall() && !mIsSwitchingState) { 3240 mInScrollArea = true; 3241 3242 final int page = (mNextPage != INVALID_PAGE ? mNextPage : mCurrentPage) + 3243 (direction == DragController.SCROLL_LEFT ? -1 : 1); 3244 cancelFolderCreation(); 3245 3246 if (0 <= page && page < getChildCount()) { 3247 CellLayout layout = (CellLayout) getChildAt(page); 3248 // Exit the current layout and mark the overlapping layout 3249 if (mDragTargetLayout != null) { 3250 mDragTargetLayout.setIsDragOverlapping(false); 3251 mDragTargetLayout.onDragExit(); 3252 } 3253 mDragTargetLayout = layout; 3254 mDragTargetLayout.setIsDragOverlapping(true); 3255 3256 // Workspace is responsible for drawing the edge glow on adjacent pages, 3257 // so we need to redraw the workspace when this may have changed. 3258 invalidate(); 3259 result = true; 3260 } 3261 } 3262 return result; 3263 } 3264 3265 @Override 3266 public boolean onExitScrollArea() { 3267 boolean result = false; 3268 if (mInScrollArea) { 3269 if (mDragTargetLayout != null) { 3270 mDragTargetLayout.setIsDragOverlapping(false); 3271 // Workspace is responsible for drawing the edge glow on adjacent pages, 3272 // so we need to redraw the workspace when this may have changed. 3273 invalidate(); 3274 } 3275 if (mDragTargetLayout != null && mDragHasEnteredWorkspace) { 3276 // Unmark the overlapping layout and re-enter the current layout 3277 mDragTargetLayout = getCurrentDropLayout(); 3278 mDragTargetLayout.onDragEnter(); 3279 } 3280 result = true; 3281 mInScrollArea = false; 3282 } 3283 return result; 3284 } 3285 3286 private void onResetScrollArea() { 3287 if (mDragTargetLayout != null) { 3288 // Unmark the overlapping layout 3289 mDragTargetLayout.setIsDragOverlapping(false); 3290 3291 // Workspace is responsible for drawing the edge glow on adjacent pages, 3292 // so we need to redraw the workspace when this may have changed. 3293 invalidate(); 3294 } 3295 mInScrollArea = false; 3296 } 3297 3298 /** 3299 * Returns a specific CellLayout 3300 */ 3301 CellLayout getParentCellLayoutForView(View v) { 3302 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3303 for (CellLayout layout : layouts) { 3304 if (layout.getChildrenLayout().indexOfChild(v) > -1) { 3305 return layout; 3306 } 3307 } 3308 return null; 3309 } 3310 3311 /** 3312 * Returns a list of all the CellLayouts in the workspace. 3313 */ 3314 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3315 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3316 int screenCount = getChildCount(); 3317 for (int screen = 0; screen < screenCount; screen++) { 3318 layouts.add(((CellLayout) getChildAt(screen))); 3319 } 3320 if (mLauncher.getHotseat() != null) { 3321 layouts.add(mLauncher.getHotseat().getLayout()); 3322 } 3323 return layouts; 3324 } 3325 3326 /** 3327 * We should only use this to search for specific children. Do not use this method to modify 3328 * CellLayoutChildren directly. 3329 */ 3330 ArrayList<CellLayoutChildren> getWorkspaceAndHotseatCellLayoutChildren() { 3331 ArrayList<CellLayoutChildren> childrenLayouts = new ArrayList<CellLayoutChildren>(); 3332 int screenCount = getChildCount(); 3333 for (int screen = 0; screen < screenCount; screen++) { 3334 childrenLayouts.add(((CellLayout) getChildAt(screen)).getChildrenLayout()); 3335 } 3336 if (mLauncher.getHotseat() != null) { 3337 childrenLayouts.add(mLauncher.getHotseat().getLayout().getChildrenLayout()); 3338 } 3339 return childrenLayouts; 3340 } 3341 3342 public Folder getFolderForTag(Object tag) { 3343 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3344 for (CellLayoutChildren layout: childrenLayouts) { 3345 int count = layout.getChildCount(); 3346 for (int i = 0; i < count; i++) { 3347 View child = layout.getChildAt(i); 3348 if (child instanceof Folder) { 3349 Folder f = (Folder) child; 3350 if (f.getInfo() == tag && f.getInfo().opened) { 3351 return f; 3352 } 3353 } 3354 } 3355 } 3356 return null; 3357 } 3358 3359 public View getViewForTag(Object tag) { 3360 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3361 for (CellLayoutChildren layout: childrenLayouts) { 3362 int count = layout.getChildCount(); 3363 for (int i = 0; i < count; i++) { 3364 View child = layout.getChildAt(i); 3365 if (child.getTag() == tag) { 3366 return child; 3367 } 3368 } 3369 } 3370 return null; 3371 } 3372 3373 void clearDropTargets() { 3374 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3375 for (CellLayoutChildren layout: childrenLayouts) { 3376 int childCount = layout.getChildCount(); 3377 for (int j = 0; j < childCount; j++) { 3378 View v = layout.getChildAt(j); 3379 if (v instanceof DropTarget) { 3380 mDragController.removeDropTarget((DropTarget) v); 3381 } 3382 } 3383 } 3384 } 3385 3386 void removeItems(final ArrayList<ApplicationInfo> apps) { 3387 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3388 3389 final HashSet<String> packageNames = new HashSet<String>(); 3390 final int appCount = apps.size(); 3391 for (int i = 0; i < appCount; i++) { 3392 packageNames.add(apps.get(i).componentName.getPackageName()); 3393 } 3394 3395 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3396 for (final CellLayout layoutParent: cellLayouts) { 3397 final ViewGroup layout = layoutParent.getChildrenLayout(); 3398 3399 // Avoid ANRs by treating each screen separately 3400 post(new Runnable() { 3401 public void run() { 3402 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3403 childrenToRemove.clear(); 3404 3405 int childCount = layout.getChildCount(); 3406 for (int j = 0; j < childCount; j++) { 3407 final View view = layout.getChildAt(j); 3408 Object tag = view.getTag(); 3409 3410 if (tag instanceof ShortcutInfo) { 3411 final ShortcutInfo info = (ShortcutInfo) tag; 3412 final Intent intent = info.intent; 3413 final ComponentName name = intent.getComponent(); 3414 3415 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3416 for (String packageName: packageNames) { 3417 if (packageName.equals(name.getPackageName())) { 3418 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3419 childrenToRemove.add(view); 3420 } 3421 } 3422 } 3423 } else if (tag instanceof FolderInfo) { 3424 final FolderInfo info = (FolderInfo) tag; 3425 final ArrayList<ShortcutInfo> contents = info.contents; 3426 final int contentsCount = contents.size(); 3427 final ArrayList<ShortcutInfo> appsToRemoveFromFolder = 3428 new ArrayList<ShortcutInfo>(); 3429 3430 for (int k = 0; k < contentsCount; k++) { 3431 final ShortcutInfo appInfo = contents.get(k); 3432 final Intent intent = appInfo.intent; 3433 final ComponentName name = intent.getComponent(); 3434 3435 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3436 for (String packageName: packageNames) { 3437 if (packageName.equals(name.getPackageName())) { 3438 appsToRemoveFromFolder.add(appInfo); 3439 } 3440 } 3441 } 3442 } 3443 for (ShortcutInfo item: appsToRemoveFromFolder) { 3444 info.remove(item); 3445 LauncherModel.deleteItemFromDatabase(mLauncher, item); 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 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3484 for (CellLayoutChildren layout: childrenLayouts) { 3485 int childCount = layout.getChildCount(); 3486 for (int j = 0; j < childCount; j++) { 3487 final View view = layout.getChildAt(j); 3488 Object tag = view.getTag(); 3489 if (tag instanceof ShortcutInfo) { 3490 ShortcutInfo info = (ShortcutInfo)tag; 3491 // We need to check for ACTION_MAIN otherwise getComponent() might 3492 // return null for some shortcuts (for instance, for shortcuts to 3493 // web pages.) 3494 final Intent intent = info.intent; 3495 final ComponentName name = intent.getComponent(); 3496 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3497 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3498 final int appCount = apps.size(); 3499 for (int k = 0; k < appCount; k++) { 3500 ApplicationInfo app = apps.get(k); 3501 if (app.componentName.equals(name)) { 3502 info.setIcon(mIconCache.getIcon(info.intent)); 3503 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 3504 new FastBitmapDrawable(info.getIcon(mIconCache)), 3505 null, null); 3506 } 3507 } 3508 } 3509 } 3510 } 3511 } 3512 } 3513 3514 void moveToDefaultScreen(boolean animate) { 3515 if (!isSmall()) { 3516 if (animate) { 3517 snapToPage(mDefaultPage); 3518 } else { 3519 setCurrentPage(mDefaultPage); 3520 } 3521 } 3522 getChildAt(mDefaultPage).requestFocus(); 3523 } 3524 3525 @Override 3526 public void syncPages() { 3527 } 3528 3529 @Override 3530 public void syncPageItems(int page, boolean immediate) { 3531 } 3532 3533 @Override 3534 protected String getCurrentPageDescription() { 3535 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 3536 return String.format(mContext.getString(R.string.workspace_scroll_format), 3537 page + 1, getChildCount()); 3538 } 3539 3540 public void getLocationInDragLayer(int[] loc) { 3541 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 3542 } 3543 3544 void setFadeForOverScroll(float fade) { 3545 if (!isScrollingIndicatorEnabled()) return; 3546 3547 mOverscrollFade = fade; 3548 float reducedFade = 0.5f + 0.5f * (1 - fade); 3549 final ViewGroup parent = (ViewGroup) getParent(); 3550 final ImageView qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3551 final ImageView dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3552 final View scrollIndicator = getScrollingIndicator(); 3553 3554 cancelScrollingIndicatorAnimations(); 3555 if (qsbDivider != null) qsbDivider.setAlpha(reducedFade); 3556 if (dockDivider != null) dockDivider.setAlpha(reducedFade); 3557 scrollIndicator.setAlpha(1 - fade); 3558 } 3559} 3560