Workspace.java revision 482ed823afb4c7452e037ce8add7ea425fc83da2
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.AnimatorSet; 21import android.animation.ObjectAnimator; 22import android.animation.TimeInterpolator; 23import android.animation.ValueAnimator; 24import android.animation.ValueAnimator.AnimatorUpdateListener; 25import android.app.WallpaperManager; 26import android.appwidget.AppWidgetHostView; 27import android.appwidget.AppWidgetManager; 28import android.appwidget.AppWidgetProviderInfo; 29import android.content.ClipDescription; 30import android.content.ComponentName; 31import android.content.Context; 32import android.content.Intent; 33import android.content.res.Resources; 34import android.content.res.TypedArray; 35import android.graphics.Bitmap; 36import android.graphics.Camera; 37import android.graphics.Canvas; 38import android.graphics.Matrix; 39import android.graphics.Paint; 40import android.graphics.Point; 41import android.graphics.Rect; 42import android.graphics.Region.Op; 43import android.graphics.drawable.Drawable; 44import android.os.IBinder; 45import android.os.Parcelable; 46import android.util.AttributeSet; 47import android.util.DisplayMetrics; 48import android.util.Log; 49import android.util.Pair; 50import android.view.Display; 51import android.view.DragEvent; 52import android.view.MotionEvent; 53import android.view.View; 54import android.view.ViewGroup; 55import android.view.animation.AccelerateInterpolator; 56import android.view.animation.DecelerateInterpolator; 57import android.widget.ImageView; 58import android.widget.TextView; 59 60import com.android.launcher.R; 61import com.android.launcher2.FolderIcon.FolderRingAnimator; 62import com.android.launcher2.InstallWidgetReceiver.WidgetMimeTypeHandlerData; 63import com.android.launcher2.LauncherSettings.Favorites; 64 65import java.util.ArrayList; 66import java.util.HashSet; 67import java.util.List; 68 69/** 70 * The workspace is a wide area with a wallpaper and a finite number of pages. 71 * Each page contains a number of icons, folders or widgets the user can 72 * interact with. A workspace is meant to be used with a fixed width only. 73 */ 74public class Workspace extends SmoothPagedView 75 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 76 DragController.DragListener, LauncherTransitionable { 77 @SuppressWarnings({"UnusedDeclaration"}) 78 private static final String TAG = "Launcher.Workspace"; 79 80 // Y rotation to apply to the workspace screens 81 private static final float WORKSPACE_ROTATION = 12.5f; 82 private static final float WORKSPACE_OVERSCROLL_ROTATION = 24f; 83 private static float CAMERA_DISTANCE = 6500; 84 85 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 86 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 87 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 88 89 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 90 private static final int ADJACENT_SCREEN_DROP_DURATION = 300; 91 private static final int FLING_THRESHOLD_VELOCITY = 500; 92 93 private float mMaxDistanceForFolderCreation = 50.0f; 94 95 // These animators are used to fade the children's outlines 96 private ObjectAnimator mChildrenOutlineFadeInAnimation; 97 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 98 private float mChildrenOutlineAlpha = 0; 99 100 // These properties refer to the background protection gradient used for AllApps and Customize 101 private ValueAnimator mBackgroundFadeInAnimation; 102 private ValueAnimator mBackgroundFadeOutAnimation; 103 private Drawable mBackground; 104 boolean mDrawBackground = true; 105 private float mBackgroundAlpha = 0; 106 private float mOverScrollMaxBackgroundAlpha = 0.0f; 107 private int mOverScrollPageIndex = -1; 108 109 private float mWallpaperScrollRatio = 1.0f; 110 111 private final WallpaperManager mWallpaperManager; 112 private IBinder mWindowToken; 113 private static final float WALLPAPER_SCREENS_SPAN = 2f; 114 115 private int mDefaultPage; 116 117 /** 118 * CellInfo for the cell that is currently being dragged 119 */ 120 private CellLayout.CellInfo mDragInfo; 121 122 /** 123 * Target drop area calculated during last acceptDrop call. 124 */ 125 private int[] mTargetCell = new int[2]; 126 127 /** 128 * The CellLayout that is currently being dragged over 129 */ 130 private CellLayout mDragTargetLayout = null; 131 private boolean mDragHasEnteredWorkspace = false; 132 133 private Launcher mLauncher; 134 private IconCache mIconCache; 135 private DragController mDragController; 136 137 // These are temporary variables to prevent having to allocate a new object just to 138 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 139 private int[] mTempCell = new int[2]; 140 private int[] mTempEstimate = new int[2]; 141 private float[] mDragViewVisualCenter = new float[2]; 142 private float[] mTempDragCoordinates = new float[2]; 143 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 144 private float[] mTempDragBottomRightCoordinates = new float[2]; 145 private Matrix mTempInverseMatrix = new Matrix(); 146 147 private SpringLoadedDragController mSpringLoadedDragController; 148 private float mSpringLoadedShrinkFactor; 149 150 private static final int DEFAULT_CELL_COUNT_X = 4; 151 private static final int DEFAULT_CELL_COUNT_Y = 4; 152 153 // State variable that indicates whether the pages are small (ie when you're 154 // in all apps or customize mode) 155 156 enum State { NORMAL, SPRING_LOADED, SMALL }; 157 private State mState = State.NORMAL; 158 private boolean mIsSwitchingState = false; 159 160 boolean mAnimatingViewIntoPlace = false; 161 boolean mIsDragOccuring = false; 162 boolean mChildrenLayersEnabled = true; 163 164 /** Is the user is dragging an item near the edge of a page? */ 165 private boolean mInScrollArea = false; 166 167 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 168 private Bitmap mDragOutline = null; 169 private final Rect mTempRect = new Rect(); 170 private final int[] mTempXY = new int[2]; 171 private float mOverscrollFade = 0; 172 public static final int DRAG_BITMAP_PADDING = 0; 173 174 // Camera and Matrix used to determine the final position of a neighboring CellLayout 175 private final Matrix mMatrix = new Matrix(); 176 private final Camera mCamera = new Camera(); 177 private final float mTempFloat2[] = new float[2]; 178 179 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 180 int mWallpaperWidth; 181 int mWallpaperHeight; 182 WallpaperOffsetInterpolator mWallpaperOffset; 183 boolean mUpdateWallpaperOffsetImmediately = false; 184 private Runnable mDelayedResizeRunnable; 185 private int mDisplayWidth; 186 private int mDisplayHeight; 187 private boolean mIsStaticWallpaper; 188 private int mWallpaperTravelWidth; 189 190 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 191 private static final int FOLDER_CREATION_TIMEOUT = 0; 192 private static final int REORDER_TIMEOUT = 250; 193 private final Alarm mFolderCreationAlarm = new Alarm(); 194 private final Alarm mReorderAlarm = new Alarm(); 195 private FolderRingAnimator mDragFolderRingAnimator = null; 196 private View mLastDragOverView = null; 197 private boolean mCreateUserFolderOnDrop = false; 198 199 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 200 private float mXDown; 201 private float mYDown; 202 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 203 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 204 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 205 206 // Relating to the animation of items being dropped externally 207 public static final int ANIMATE_INTO_POSITION_AND_DISAPPEAR = 0; 208 public static final int ANIMATE_INTO_POSITION_AND_REMAIN = 1; 209 public static final int ANIMATE_INTO_POSITION_AND_RESIZE = 2; 210 public static final int COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION = 3; 211 public static final int CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION = 4; 212 213 // Related to dragging, folder creation and reordering 214 private static final int DRAG_MODE_NONE = 0; 215 private static final int DRAG_MODE_CREATE_FOLDER = 1; 216 private static final int DRAG_MODE_ADD_TO_FOLDER = 2; 217 private static final int DRAG_MODE_REORDER = 3; 218 private int mDragMode = DRAG_MODE_NONE; 219 private int mLastReorderX = -1; 220 private int mLastReorderY = -1; 221 222 // Relating to workspace drag fade out 223 private float mDragFadeOutAlpha; 224 private int mDragFadeOutDuration; 225 226 // These variables are used for storing the initial and final values during workspace animations 227 private int mSavedScrollX; 228 private float mSavedRotationY; 229 private float mSavedTranslationX; 230 private float mCurrentScaleX; 231 private float mCurrentScaleY; 232 private float mCurrentRotationY; 233 private float mCurrentTranslationX; 234 private float mCurrentTranslationY; 235 private float[] mOldTranslationXs; 236 private float[] mOldTranslationYs; 237 private float[] mOldScaleXs; 238 private float[] mOldScaleYs; 239 private float[] mOldBackgroundAlphas; 240 private float[] mOldBackgroundAlphaMultipliers; 241 private float[] mOldAlphas; 242 private float[] mOldRotationYs; 243 private float[] mNewTranslationXs; 244 private float[] mNewTranslationYs; 245 private float[] mNewScaleXs; 246 private float[] mNewScaleYs; 247 private float[] mNewBackgroundAlphas; 248 private float[] mNewBackgroundAlphaMultipliers; 249 private float[] mNewAlphas; 250 private float[] mNewRotationYs; 251 private float mTransitionProgress; 252 253 /** 254 * Used to inflate the Workspace from XML. 255 * 256 * @param context The application's context. 257 * @param attrs The attributes set containing the Workspace's customization values. 258 */ 259 public Workspace(Context context, AttributeSet attrs) { 260 this(context, attrs, 0); 261 } 262 263 /** 264 * Used to inflate the Workspace from XML. 265 * 266 * @param context The application's context. 267 * @param attrs The attributes set containing the Workspace's customization values. 268 * @param defStyle Unused. 269 */ 270 public Workspace(Context context, AttributeSet attrs, int defStyle) { 271 super(context, attrs, defStyle); 272 mContentIsRefreshable = false; 273 274 // With workspace, data is available straight from the get-go 275 setDataIsReady(); 276 277 final Resources res = getResources(); 278 mFadeInAdjacentScreens = res.getBoolean(R.bool.config_workspaceFadeAdjacentScreens); 279 mDragFadeOutAlpha = res.getInteger(R.integer.config_dragFadeOutAlpha) / 100f; 280 mDragFadeOutDuration = res.getInteger(R.integer.config_dragFadeOutDuration); 281 mWallpaperManager = WallpaperManager.getInstance(context); 282 283 int cellCountX = DEFAULT_CELL_COUNT_X; 284 int cellCountY = DEFAULT_CELL_COUNT_Y; 285 286 TypedArray a = context.obtainStyledAttributes(attrs, 287 R.styleable.Workspace, defStyle, 0); 288 289 if (LauncherApplication.isScreenLarge()) { 290 // Determine number of rows/columns dynamically 291 // TODO: This code currently fails on tablets with an aspect ratio < 1.3. 292 // Around that ratio we should make cells the same size in portrait and 293 // landscape 294 TypedArray actionBarSizeTypedArray = 295 context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize }); 296 DisplayMetrics displayMetrics = res.getDisplayMetrics(); 297 final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); 298 final float systemBarHeight = res.getDimension(R.dimen.status_bar_height); 299 final float smallestScreenDim = res.getConfiguration().smallestScreenWidthDp * 300 displayMetrics.density; 301 302 cellCountX = 1; 303 while (CellLayout.widthInPortrait(res, cellCountX + 1) <= smallestScreenDim) { 304 cellCountX++; 305 } 306 307 cellCountY = 1; 308 while (actionBarHeight + CellLayout.heightInLandscape(res, cellCountY + 1) 309 <= smallestScreenDim - systemBarHeight) { 310 cellCountY++; 311 } 312 } 313 314 mSpringLoadedShrinkFactor = 315 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 316 317 // if the value is manually specified, use that instead 318 cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX); 319 cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY); 320 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 321 a.recycle(); 322 323 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 324 setHapticFeedbackEnabled(false); 325 326 mLauncher = (Launcher) context; 327 initWorkspace(); 328 329 // Disable multitouch across the workspace/all apps/customize tray 330 setMotionEventSplittingEnabled(true); 331 } 332 333 // estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each 334 // dimension if unsuccessful 335 public int[] estimateItemSize(int hSpan, int vSpan, 336 ItemInfo itemInfo, boolean springLoaded) { 337 int[] size = new int[2]; 338 if (getChildCount() > 0) { 339 CellLayout cl = (CellLayout) mLauncher.getWorkspace().getChildAt(0); 340 Rect r = estimateItemPosition(cl, itemInfo, 0, 0, hSpan, vSpan); 341 size[0] = r.width(); 342 size[1] = r.height(); 343 if (springLoaded) { 344 size[0] *= mSpringLoadedShrinkFactor; 345 size[1] *= mSpringLoadedShrinkFactor; 346 } 347 return size; 348 } else { 349 size[0] = Integer.MAX_VALUE; 350 size[1] = Integer.MAX_VALUE; 351 return size; 352 } 353 } 354 public Rect estimateItemPosition(CellLayout cl, ItemInfo pendingInfo, 355 int hCell, int vCell, int hSpan, int vSpan) { 356 Rect r = new Rect(); 357 cl.cellToRect(hCell, vCell, hSpan, vSpan, r); 358 return r; 359 } 360 361 public void buildPageHardwareLayers() { 362 if (getWindowToken() != null) { 363 final int childCount = getChildCount(); 364 for (int i = 0; i < childCount; i++) { 365 CellLayout cl = (CellLayout) getChildAt(i); 366 cl.buildChildrenLayer(); 367 } 368 } 369 } 370 371 public void onDragStart(DragSource source, Object info, int dragAction) { 372 mIsDragOccuring = true; 373 updateChildrenLayersEnabled(); 374 mLauncher.lockScreenOrientationOnLargeUI(); 375 376 // Fade out the workspace slightly to highlight the currently dragging item 377 int count = getChildCount(); 378 for (int i = 0; i < count; i++) { 379 CellLayout cl = (CellLayout) getPageAt(i); 380 cl.getChildrenLayout().animate().alpha(mDragFadeOutAlpha) 381 .setInterpolator(new AccelerateInterpolator(1.5f)) 382 .setDuration(mDragFadeOutDuration) 383 .start(); 384 } 385 } 386 387 public void onDragEnd() { 388 mIsDragOccuring = false; 389 updateChildrenLayersEnabled(); 390 mLauncher.unlockScreenOrientationOnLargeUI(); 391 392 // Fade the workspace back in after we have completed dragging 393 int count = getChildCount(); 394 for (int i = 0; i < count; i++) { 395 CellLayout cl = (CellLayout) getPageAt(i); 396 cl.getChildrenLayout().animate().alpha(1f) 397 .setInterpolator(new DecelerateInterpolator(1.5f)) 398 .setDuration(mDragFadeOutDuration) 399 .start(); 400 } 401 } 402 403 /** 404 * Initializes various states for this workspace. 405 */ 406 protected void initWorkspace() { 407 Context context = getContext(); 408 mCurrentPage = mDefaultPage; 409 Launcher.setScreen(mCurrentPage); 410 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 411 mIconCache = app.getIconCache(); 412 setWillNotDraw(false); 413 setChildrenDrawnWithCacheEnabled(true); 414 415 final Resources res = getResources(); 416 try { 417 mBackground = res.getDrawable(R.drawable.apps_customize_bg); 418 } catch (Resources.NotFoundException e) { 419 // In this case, we will skip drawing background protection 420 } 421 422 mWallpaperOffset = new WallpaperOffsetInterpolator(); 423 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 424 mDisplayWidth = display.getWidth(); 425 mDisplayHeight = display.getHeight(); 426 mWallpaperTravelWidth = (int) (mDisplayWidth * 427 wallpaperTravelToScreenWidthRatio(mDisplayWidth, mDisplayHeight)); 428 429 mMaxDistanceForFolderCreation = (0.5f * res.getDimension(R.dimen.app_icon_size)); 430 mFlingThresholdVelocity = (int) (FLING_THRESHOLD_VELOCITY * mDensity); 431 } 432 433 @Override 434 protected int getScrollMode() { 435 return SmoothPagedView.X_LARGE_MODE; 436 } 437 438 @Override 439 protected void onViewAdded(View child) { 440 super.onViewAdded(child); 441 if (!(child instanceof CellLayout)) { 442 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 443 } 444 CellLayout cl = ((CellLayout) child); 445 cl.setOnInterceptTouchListener(this); 446 cl.setClickable(true); 447 cl.enableHardwareLayers(); 448 } 449 450 /** 451 * @return The open folder on the current screen, or null if there is none 452 */ 453 Folder getOpenFolder() { 454 DragLayer dragLayer = mLauncher.getDragLayer(); 455 int count = dragLayer.getChildCount(); 456 for (int i = 0; i < count; i++) { 457 View child = dragLayer.getChildAt(i); 458 if (child instanceof Folder) { 459 Folder folder = (Folder) child; 460 if (folder.getInfo().opened) 461 return folder; 462 } 463 } 464 return null; 465 } 466 467 boolean isTouchActive() { 468 return mTouchState != TOUCH_STATE_REST; 469 } 470 471 /** 472 * Adds the specified child in the specified screen. The position and dimension of 473 * the child are defined by x, y, spanX and spanY. 474 * 475 * @param child The child to add in one of the workspace's screens. 476 * @param screen The screen in which to add the child. 477 * @param x The X position of the child in the screen's grid. 478 * @param y The Y position of the child in the screen's grid. 479 * @param spanX The number of cells spanned horizontally by the child. 480 * @param spanY The number of cells spanned vertically by the child. 481 */ 482 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY) { 483 addInScreen(child, container, screen, x, y, spanX, spanY, false); 484 } 485 486 /** 487 * Adds the specified child in the specified screen. The position and dimension of 488 * the child are defined by x, y, spanX and spanY. 489 * 490 * @param child The child to add in one of the workspace's screens. 491 * @param screen The screen in which to add the child. 492 * @param x The X position of the child in the screen's grid. 493 * @param y The Y position of the child in the screen's grid. 494 * @param spanX The number of cells spanned horizontally by the child. 495 * @param spanY The number of cells spanned vertically by the child. 496 * @param insert When true, the child is inserted at the beginning of the children list. 497 */ 498 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY, 499 boolean insert) { 500 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 501 if (screen < 0 || screen >= getChildCount()) { 502 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 503 + " (was " + screen + "); skipping child"); 504 return; 505 } 506 } 507 508 final CellLayout layout; 509 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 510 layout = mLauncher.getHotseat().getLayout(); 511 child.setOnKeyListener(null); 512 513 // Hide folder title in the hotseat 514 if (child instanceof FolderIcon) { 515 ((FolderIcon) child).setTextVisible(false); 516 } 517 518 if (screen < 0) { 519 screen = mLauncher.getHotseat().getOrderInHotseat(x, y); 520 } else { 521 // Note: We do this to ensure that the hotseat is always laid out in the orientation 522 // of the hotseat in order regardless of which orientation they were added 523 x = mLauncher.getHotseat().getCellXFromOrder(screen); 524 y = mLauncher.getHotseat().getCellYFromOrder(screen); 525 } 526 } else { 527 // Show folder title if not in the hotseat 528 if (child instanceof FolderIcon) { 529 ((FolderIcon) child).setTextVisible(true); 530 } 531 532 layout = (CellLayout) getChildAt(screen); 533 child.setOnKeyListener(new IconKeyEventListener()); 534 } 535 536 LayoutParams genericLp = child.getLayoutParams(); 537 CellLayout.LayoutParams lp; 538 if (genericLp == null || !(genericLp instanceof CellLayout.LayoutParams)) { 539 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 540 } else { 541 lp = (CellLayout.LayoutParams) genericLp; 542 lp.cellX = x; 543 lp.cellY = y; 544 lp.cellHSpan = spanX; 545 lp.cellVSpan = spanY; 546 } 547 548 if (spanX < 0 && spanY < 0) { 549 lp.isLockedToGrid = false; 550 } 551 552 // Get the canonical child id to uniquely represent this view in this screen 553 int childId = LauncherModel.getCellLayoutChildId(container, screen, x, y, spanX, spanY); 554 boolean markCellsAsOccupied = !(child instanceof Folder); 555 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 556 // TODO: This branch occurs when the workspace is adding views 557 // outside of the defined grid 558 // maybe we should be deleting these items from the LauncherModel? 559 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 560 } 561 562 if (!(child instanceof Folder)) { 563 child.setHapticFeedbackEnabled(false); 564 child.setOnLongClickListener(mLongClickListener); 565 } 566 if (child instanceof DropTarget) { 567 mDragController.addDropTarget((DropTarget) child); 568 } 569 } 570 571 /** 572 * Check if the point (x, y) hits a given page. 573 */ 574 private boolean hitsPage(int index, float x, float y) { 575 final View page = getChildAt(index); 576 if (page != null) { 577 float[] localXY = { x, y }; 578 mapPointFromSelfToChild(page, localXY); 579 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 580 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 581 } 582 return false; 583 } 584 585 @Override 586 protected boolean hitsPreviousPage(float x, float y) { 587 // mNextPage is set to INVALID_PAGE whenever we are stationary. 588 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 589 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 590 591 // Only allow tap to next page on large devices, where there's significant margin outside 592 // the active workspace 593 return LauncherApplication.isScreenLarge() && hitsPage(current - 1, x, y); 594 } 595 596 @Override 597 protected boolean hitsNextPage(float x, float y) { 598 // mNextPage is set to INVALID_PAGE whenever we are stationary. 599 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 600 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 601 602 // Only allow tap to next page on large devices, where there's significant margin outside 603 // the active workspace 604 return LauncherApplication.isScreenLarge() && hitsPage(current + 1, x, y); 605 } 606 607 /** 608 * Called directly from a CellLayout (not by the framework), after we've been added as a 609 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 610 * that it should intercept touch events, which is not something that is normally supported. 611 */ 612 @Override 613 public boolean onTouch(View v, MotionEvent event) { 614 return (isSmall() || !isFinishedSwitchingState()); 615 } 616 617 public boolean isSwitchingState() { 618 return mIsSwitchingState; 619 } 620 621 /** This differs from isSwitchingState in that we take into account how far the transition 622 * has completed. */ 623 public boolean isFinishedSwitchingState() { 624 return !mIsSwitchingState || (mTransitionProgress > 0.5f); 625 } 626 627 protected void onWindowVisibilityChanged (int visibility) { 628 mLauncher.onWindowVisibilityChanged(visibility); 629 } 630 631 @Override 632 public boolean dispatchUnhandledMove(View focused, int direction) { 633 if (isSmall() || !isFinishedSwitchingState()) { 634 // when the home screens are shrunken, shouldn't allow side-scrolling 635 return false; 636 } 637 return super.dispatchUnhandledMove(focused, direction); 638 } 639 640 @Override 641 public boolean onInterceptTouchEvent(MotionEvent ev) { 642 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 643 case MotionEvent.ACTION_DOWN: 644 mXDown = ev.getX(); 645 mYDown = ev.getY(); 646 break; 647 case MotionEvent.ACTION_POINTER_UP: 648 case MotionEvent.ACTION_UP: 649 if (mTouchState == TOUCH_STATE_REST) { 650 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 651 if (!currentPage.lastDownOnOccupiedCell()) { 652 onWallpaperTap(ev); 653 } 654 } 655 } 656 return super.onInterceptTouchEvent(ev); 657 } 658 659 @Override 660 protected void determineScrollingStart(MotionEvent ev) { 661 if (isSmall()) return; 662 if (!isFinishedSwitchingState()) return; 663 664 float deltaX = Math.abs(ev.getX() - mXDown); 665 float deltaY = Math.abs(ev.getY() - mYDown); 666 667 if (Float.compare(deltaX, 0f) == 0) return; 668 669 float slope = deltaY / deltaX; 670 float theta = (float) Math.atan(slope); 671 672 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 673 cancelCurrentPageLongPress(); 674 } 675 676 if (theta > MAX_SWIPE_ANGLE) { 677 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 678 return; 679 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 680 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 681 // increase the touch slop to make it harder to begin scrolling the workspace. This 682 // results in vertically scrolling widgets to more easily. The higher the angle, the 683 // more we increase touch slop. 684 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 685 float extraRatio = (float) 686 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 687 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 688 } else { 689 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 690 super.determineScrollingStart(ev); 691 } 692 } 693 694 @Override 695 protected boolean isScrollingIndicatorEnabled() { 696 return mState != State.SPRING_LOADED; 697 } 698 699 protected void onPageBeginMoving() { 700 super.onPageBeginMoving(); 701 702 if (isHardwareAccelerated()) { 703 updateChildrenLayersEnabled(); 704 } else { 705 if (mNextPage != INVALID_PAGE) { 706 // we're snapping to a particular screen 707 enableChildrenCache(mCurrentPage, mNextPage); 708 } else { 709 // this is when user is actively dragging a particular screen, they might 710 // swipe it either left or right (but we won't advance by more than one screen) 711 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 712 } 713 } 714 715 // Only show page outlines as we pan if we are on large screen 716 if (LauncherApplication.isScreenLarge()) { 717 showOutlines(); 718 mIsStaticWallpaper = mWallpaperManager.getWallpaperInfo() == null; 719 } 720 721 // If we are not fading in adjacent screens, we still need to restore the alpha in case the 722 // user scrolls while we are transitioning (should not affect dispatchDraw optimizations) 723 if (!mFadeInAdjacentScreens) { 724 for (int i = 0; i < getChildCount(); ++i) { 725 getPageAt(i).setAlpha(1f); 726 } 727 } 728 729 // Show the scroll indicator as you pan the page 730 showScrollingIndicator(false); 731 } 732 733 protected void onPageEndMoving() { 734 super.onPageEndMoving(); 735 736 if (isHardwareAccelerated()) { 737 updateChildrenLayersEnabled(); 738 } else { 739 clearChildrenCache(); 740 } 741 742 743 if (mDragController.isDragging()) { 744 if (isSmall()) { 745 // If we are in springloaded mode, then force an event to check if the current touch 746 // is under a new page (to scroll to) 747 mDragController.forceMoveEvent(); 748 } 749 } else { 750 // If we are not mid-dragging, hide the page outlines if we are on a large screen 751 if (LauncherApplication.isScreenLarge()) { 752 hideOutlines(); 753 } 754 755 // Hide the scroll indicator as you pan the page 756 if (!mDragController.isDragging()) { 757 hideScrollingIndicator(false); 758 } 759 } 760 mOverScrollMaxBackgroundAlpha = 0.0f; 761 mOverScrollPageIndex = -1; 762 763 if (mDelayedResizeRunnable != null) { 764 mDelayedResizeRunnable.run(); 765 mDelayedResizeRunnable = null; 766 } 767 } 768 769 @Override 770 protected void notifyPageSwitchListener() { 771 super.notifyPageSwitchListener(); 772 Launcher.setScreen(mCurrentPage); 773 }; 774 775 // As a ratio of screen height, the total distance we want the parallax effect to span 776 // horizontally 777 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 778 float aspectRatio = width / (float) height; 779 780 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 781 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 782 // We will use these two data points to extrapolate how much the wallpaper parallax effect 783 // to span (ie travel) at any aspect ratio: 784 785 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 786 final float ASPECT_RATIO_PORTRAIT = 10/16f; 787 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 788 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 789 790 // To find out the desired width at different aspect ratios, we use the following two 791 // formulas, where the coefficient on x is the aspect ratio (width/height): 792 // (16/10)x + y = 1.5 793 // (10/16)x + y = 1.2 794 // We solve for x and y and end up with a final formula: 795 final float x = 796 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 797 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 798 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 799 return x * aspectRatio + y; 800 } 801 802 // The range of scroll values for Workspace 803 private int getScrollRange() { 804 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 805 } 806 807 protected void setWallpaperDimension() { 808 DisplayMetrics displayMetrics = new DisplayMetrics(); 809 mLauncher.getWindowManager().getDefaultDisplay().getRealMetrics(displayMetrics); 810 final int maxDim = Math.max(displayMetrics.widthPixels, displayMetrics.heightPixels); 811 final int minDim = Math.min(displayMetrics.widthPixels, displayMetrics.heightPixels); 812 813 // We need to ensure that there is enough extra space in the wallpaper for the intended 814 // parallax effects 815 if (LauncherApplication.isScreenLarge()) { 816 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 817 mWallpaperHeight = maxDim; 818 } else { 819 mWallpaperWidth = Math.max((int) (minDim * WALLPAPER_SCREENS_SPAN), maxDim); 820 mWallpaperHeight = maxDim; 821 } 822 new Thread("setWallpaperDimension") { 823 public void run() { 824 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 825 } 826 }.start(); 827 } 828 829 private float wallpaperOffsetForCurrentScroll() { 830 // Set wallpaper offset steps (1 / (number of screens - 1)) 831 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f); 832 833 // For the purposes of computing the scrollRange and overScrollOffset, we assume 834 // that mLayoutScale is 1. This means that when we're in spring-loaded mode, 835 // there's no discrepancy between the wallpaper offset for a given page. 836 float layoutScale = mLayoutScale; 837 mLayoutScale = 1f; 838 int scrollRange = getScrollRange(); 839 840 // Again, we adjust the wallpaper offset to be consistent between values of mLayoutScale 841 float adjustedScrollX = Math.max(0, Math.min(mScrollX, mMaxScrollX)); 842 adjustedScrollX *= mWallpaperScrollRatio; 843 mLayoutScale = layoutScale; 844 845 float scrollProgress = 846 adjustedScrollX / (float) scrollRange; 847 848 if (LauncherApplication.isScreenLarge() && mIsStaticWallpaper) { 849 // The wallpaper travel width is how far, from left to right, the wallpaper will move 850 // at this orientation. On tablets in portrait mode we don't move all the way to the 851 // edges of the wallpaper, or otherwise the parallax effect would be too strong. 852 int wallpaperTravelWidth = Math.min(mWallpaperTravelWidth, mWallpaperWidth); 853 854 float offsetInDips = wallpaperTravelWidth * scrollProgress + 855 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 856 float offset = offsetInDips / (float) mWallpaperWidth; 857 return offset; 858 } else { 859 return scrollProgress; 860 } 861 } 862 863 private void syncWallpaperOffsetWithScroll() { 864 final boolean enableWallpaperEffects = isHardwareAccelerated(); 865 if (enableWallpaperEffects) { 866 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 867 } 868 } 869 870 public void updateWallpaperOffsetImmediately() { 871 mUpdateWallpaperOffsetImmediately = true; 872 } 873 874 private void updateWallpaperOffsets() { 875 boolean updateNow = false; 876 boolean keepUpdating = true; 877 if (mUpdateWallpaperOffsetImmediately) { 878 updateNow = true; 879 keepUpdating = false; 880 mWallpaperOffset.jumpToFinal(); 881 mUpdateWallpaperOffsetImmediately = false; 882 } else { 883 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 884 } 885 if (updateNow) { 886 if (mWindowToken != null) { 887 mWallpaperManager.setWallpaperOffsets(mWindowToken, 888 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 889 } 890 } 891 if (keepUpdating) { 892 invalidate(); 893 } 894 } 895 896 @Override 897 protected void updateCurrentPageScroll() { 898 super.updateCurrentPageScroll(); 899 computeWallpaperScrollRatio(mCurrentPage); 900 } 901 902 @Override 903 protected void snapToPage(int whichPage) { 904 super.snapToPage(whichPage); 905 computeWallpaperScrollRatio(whichPage); 906 } 907 908 private void computeWallpaperScrollRatio(int page) { 909 // Here, we determine what the desired scroll would be with and without a layout scale, 910 // and compute a ratio between the two. This allows us to adjust the wallpaper offset 911 // as though there is no layout scale. 912 float layoutScale = mLayoutScale; 913 int scaled = getChildOffset(page) - getRelativeChildOffset(page); 914 mLayoutScale = 1.0f; 915 float unscaled = getChildOffset(page) - getRelativeChildOffset(page); 916 mLayoutScale = layoutScale; 917 if (scaled > 0) { 918 mWallpaperScrollRatio = (1.0f * unscaled) / scaled; 919 } else { 920 mWallpaperScrollRatio = 1f; 921 } 922 } 923 924 class WallpaperOffsetInterpolator { 925 float mFinalHorizontalWallpaperOffset = 0.0f; 926 float mFinalVerticalWallpaperOffset = 0.5f; 927 float mHorizontalWallpaperOffset = 0.0f; 928 float mVerticalWallpaperOffset = 0.5f; 929 long mLastWallpaperOffsetUpdateTime; 930 boolean mIsMovingFast; 931 boolean mOverrideHorizontalCatchupConstant; 932 float mHorizontalCatchupConstant = 0.35f; 933 float mVerticalCatchupConstant = 0.35f; 934 935 public WallpaperOffsetInterpolator() { 936 } 937 938 public void setOverrideHorizontalCatchupConstant(boolean override) { 939 mOverrideHorizontalCatchupConstant = override; 940 } 941 942 public void setHorizontalCatchupConstant(float f) { 943 mHorizontalCatchupConstant = f; 944 } 945 946 public void setVerticalCatchupConstant(float f) { 947 mVerticalCatchupConstant = f; 948 } 949 950 public boolean computeScrollOffset() { 951 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 952 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 953 mIsMovingFast = false; 954 return false; 955 } 956 boolean isLandscape = mDisplayWidth > mDisplayHeight; 957 958 long currentTime = System.currentTimeMillis(); 959 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 960 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 961 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 962 963 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 964 if (!mIsMovingFast && xdiff > 0.07) { 965 mIsMovingFast = true; 966 } 967 968 float fractionToCatchUpIn1MsHorizontal; 969 if (mOverrideHorizontalCatchupConstant) { 970 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 971 } else if (mIsMovingFast) { 972 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 973 } else { 974 // slow 975 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 976 } 977 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 978 979 fractionToCatchUpIn1MsHorizontal /= 33f; 980 fractionToCatchUpIn1MsVertical /= 33f; 981 982 final float UPDATE_THRESHOLD = 0.00001f; 983 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 984 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 985 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 986 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 987 988 // Don't have any lag between workspace and wallpaper on non-large devices 989 if (!LauncherApplication.isScreenLarge() || jumpToFinalValue) { 990 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 991 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 992 } else { 993 float percentToCatchUpVertical = 994 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 995 float percentToCatchUpHorizontal = 996 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 997 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 998 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 999 } 1000 1001 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 1002 return true; 1003 } 1004 1005 public float getCurrX() { 1006 return mHorizontalWallpaperOffset; 1007 } 1008 1009 public float getFinalX() { 1010 return mFinalHorizontalWallpaperOffset; 1011 } 1012 1013 public float getCurrY() { 1014 return mVerticalWallpaperOffset; 1015 } 1016 1017 public float getFinalY() { 1018 return mFinalVerticalWallpaperOffset; 1019 } 1020 1021 public void setFinalX(float x) { 1022 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 1023 } 1024 1025 public void setFinalY(float y) { 1026 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 1027 } 1028 1029 public void jumpToFinal() { 1030 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 1031 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 1032 } 1033 } 1034 1035 @Override 1036 public void computeScroll() { 1037 super.computeScroll(); 1038 syncWallpaperOffsetWithScroll(); 1039 } 1040 1041 void showOutlines() { 1042 if (!isSmall() && !mIsSwitchingState) { 1043 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1044 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1045 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 1046 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 1047 mChildrenOutlineFadeInAnimation.start(); 1048 } 1049 } 1050 1051 void hideOutlines() { 1052 if (!isSmall() && !mIsSwitchingState) { 1053 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1054 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1055 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 1056 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 1057 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 1058 mChildrenOutlineFadeOutAnimation.start(); 1059 } 1060 } 1061 1062 public void showOutlinesTemporarily() { 1063 if (!mIsPageMoving && !isTouchActive()) { 1064 snapToPage(mCurrentPage); 1065 } 1066 } 1067 1068 public void setChildrenOutlineAlpha(float alpha) { 1069 mChildrenOutlineAlpha = alpha; 1070 for (int i = 0; i < getChildCount(); i++) { 1071 CellLayout cl = (CellLayout) getChildAt(i); 1072 cl.setBackgroundAlpha(alpha); 1073 } 1074 } 1075 1076 public float getChildrenOutlineAlpha() { 1077 return mChildrenOutlineAlpha; 1078 } 1079 1080 void disableBackground() { 1081 mDrawBackground = false; 1082 } 1083 void enableBackground() { 1084 mDrawBackground = true; 1085 } 1086 1087 private void animateBackgroundGradient(float finalAlpha, boolean animated) { 1088 if (mBackground == null) return; 1089 if (mBackgroundFadeInAnimation != null) { 1090 mBackgroundFadeInAnimation.cancel(); 1091 mBackgroundFadeInAnimation = null; 1092 } 1093 if (mBackgroundFadeOutAnimation != null) { 1094 mBackgroundFadeOutAnimation.cancel(); 1095 mBackgroundFadeOutAnimation = null; 1096 } 1097 float startAlpha = getBackgroundAlpha(); 1098 if (finalAlpha != startAlpha) { 1099 if (animated) { 1100 mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(startAlpha, finalAlpha); 1101 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1102 public void onAnimationUpdate(ValueAnimator animation) { 1103 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1104 } 1105 }); 1106 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1107 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1108 mBackgroundFadeOutAnimation.start(); 1109 } else { 1110 setBackgroundAlpha(finalAlpha); 1111 } 1112 } 1113 } 1114 1115 public void setBackgroundAlpha(float alpha) { 1116 if (alpha != mBackgroundAlpha) { 1117 mBackgroundAlpha = alpha; 1118 invalidate(); 1119 } 1120 } 1121 1122 public float getBackgroundAlpha() { 1123 return mBackgroundAlpha; 1124 } 1125 1126 /** 1127 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 1128 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 1129 * as being larger. This method computes what offset the rotated view should be translated 1130 * in order to minimize this perceived gap. 1131 * @param degrees Angle of the view 1132 * @param width Width of the view 1133 * @param height Height of the view 1134 * @return Offset to be used in a View.setTranslationX() call 1135 */ 1136 private float getOffsetXForRotation(float degrees, int width, int height) { 1137 mMatrix.reset(); 1138 mCamera.save(); 1139 mCamera.rotateY(Math.abs(degrees)); 1140 mCamera.getMatrix(mMatrix); 1141 mCamera.restore(); 1142 1143 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 1144 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 1145 mTempFloat2[0] = width; 1146 mTempFloat2[1] = height; 1147 mMatrix.mapPoints(mTempFloat2); 1148 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 1149 } 1150 1151 float backgroundAlphaInterpolator(float r) { 1152 float pivotA = 0.1f; 1153 float pivotB = 0.4f; 1154 if (r < pivotA) { 1155 return 0; 1156 } else if (r > pivotB) { 1157 return 1.0f; 1158 } else { 1159 return (r - pivotA)/(pivotB - pivotA); 1160 } 1161 } 1162 1163 float overScrollBackgroundAlphaInterpolator(float r) { 1164 float threshold = 0.08f; 1165 1166 if (r > mOverScrollMaxBackgroundAlpha) { 1167 mOverScrollMaxBackgroundAlpha = r; 1168 } else if (r < mOverScrollMaxBackgroundAlpha) { 1169 r = mOverScrollMaxBackgroundAlpha; 1170 } 1171 1172 return Math.min(r / threshold, 1.0f); 1173 } 1174 1175 private void screenScrolledLargeUI(int screenCenter) { 1176 if (isSwitchingState()) return; 1177 boolean isInOverscroll = false; 1178 for (int i = 0; i < getChildCount(); i++) { 1179 CellLayout cl = (CellLayout) getChildAt(i); 1180 if (cl != null) { 1181 float scrollProgress = getScrollProgress(screenCenter, cl, i); 1182 float rotation = WORKSPACE_ROTATION * scrollProgress; 1183 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1184 1185 // If the current page (i) is being over scrolled, we use a different 1186 // set of rules for setting the background alpha multiplier. 1187 if (!isSmall()) { 1188 if ((mOverScrollX < 0 && i == 0) || (mOverScrollX > mMaxScrollX && 1189 i == getChildCount() -1)) { 1190 isInOverscroll = true; 1191 rotation *= -1; 1192 cl.setBackgroundAlphaMultiplier( 1193 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 1194 mOverScrollPageIndex = i; 1195 cl.setOverScrollAmount(Math.abs(scrollProgress), i == 0); 1196 cl.setPivotX(cl.getMeasuredWidth() * (i == 0 ? 0.75f : 0.25f)); 1197 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1198 cl.setOverscrollTransformsDirty(true); 1199 } else if (mOverScrollPageIndex != i) { 1200 cl.setBackgroundAlphaMultiplier( 1201 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1202 } 1203 } 1204 cl.setTranslationX(translationX); 1205 cl.setRotationY(rotation); 1206 if (mFadeInAdjacentScreens && !isSmall()) { 1207 float alpha = 1 - Math.abs(scrollProgress); 1208 cl.setAlpha(alpha); 1209 } 1210 } 1211 } 1212 if (!isSwitchingState() && !isInOverscroll) { 1213 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1214 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1215 } 1216 invalidate(); 1217 } 1218 1219 private void screenScrolledStandardUI(int screenCenter) { 1220 if (mOverScrollX < 0 || mOverScrollX > mMaxScrollX) { 1221 int index = mOverScrollX < 0 ? 0 : getChildCount() - 1; 1222 CellLayout cl = (CellLayout) getChildAt(index); 1223 float scrollProgress = getScrollProgress(screenCenter, cl, index); 1224 cl.setOverScrollAmount(Math.abs(scrollProgress), index == 0); 1225 float rotation = - WORKSPACE_OVERSCROLL_ROTATION * scrollProgress; 1226 cl.setCameraDistance(mDensity * CAMERA_DISTANCE); 1227 cl.setPivotX(cl.getMeasuredWidth() * (index == 0 ? 0.75f : 0.25f)); 1228 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1229 cl.setRotationY(rotation); 1230 cl.setOverscrollTransformsDirty(true); 1231 setFadeForOverScroll(Math.abs(scrollProgress)); 1232 } else { 1233 if (mOverscrollFade != 0) { 1234 setFadeForOverScroll(0); 1235 } 1236 // We don't want to mess with the translations during transitions 1237 if (!isSwitchingState()) { 1238 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1239 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1240 } 1241 } 1242 } 1243 1244 @Override 1245 protected void screenScrolled(int screenCenter) { 1246 if (LauncherApplication.isScreenLarge()) { 1247 // We don't call super.screenScrolled() here because we handle the adjacent pages alpha 1248 // ourselves (for efficiency), and there are no scrolling indicators to update. 1249 screenScrolledLargeUI(screenCenter); 1250 } else { 1251 super.screenScrolled(screenCenter); 1252 screenScrolledStandardUI(screenCenter); 1253 } 1254 } 1255 1256 @Override 1257 protected void overScroll(float amount) { 1258 if (LauncherApplication.isScreenLarge()) { 1259 dampedOverScroll(amount); 1260 } else { 1261 acceleratedOverScroll(amount); 1262 } 1263 } 1264 1265 protected void onAttachedToWindow() { 1266 super.onAttachedToWindow(); 1267 mWindowToken = getWindowToken(); 1268 computeScroll(); 1269 mDragController.setWindowToken(mWindowToken); 1270 } 1271 1272 protected void onDetachedFromWindow() { 1273 mWindowToken = null; 1274 } 1275 1276 @Override 1277 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1278 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1279 mUpdateWallpaperOffsetImmediately = true; 1280 } 1281 super.onLayout(changed, left, top, right, bottom); 1282 } 1283 1284 @Override 1285 protected void onDraw(Canvas canvas) { 1286 updateWallpaperOffsets(); 1287 1288 // Draw the background gradient if necessary 1289 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1290 int alpha = (int) (mBackgroundAlpha * 255); 1291 mBackground.setAlpha(alpha); 1292 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1293 getMeasuredHeight()); 1294 mBackground.draw(canvas); 1295 } 1296 1297 super.onDraw(canvas); 1298 } 1299 1300 boolean isDrawingBackgroundGradient() { 1301 return (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground); 1302 } 1303 1304 @Override 1305 protected void dispatchDraw(Canvas canvas) { 1306 super.dispatchDraw(canvas); 1307 1308 if (mInScrollArea && !LauncherApplication.isScreenLarge()) { 1309 final int width = getWidth(); 1310 final int height = getHeight(); 1311 final int pageHeight = getChildAt(0).getHeight(); 1312 1313 // Set the height of the outline to be the height of the page 1314 final int offset = (height - pageHeight - mPaddingTop - mPaddingBottom) / 2; 1315 final int paddingTop = mPaddingTop + offset; 1316 final int paddingBottom = mPaddingBottom + offset; 1317 1318 final int page = (mNextPage != INVALID_PAGE ? mNextPage : mCurrentPage); 1319 final CellLayout leftPage = (CellLayout) getChildAt(page - 1); 1320 final CellLayout rightPage = (CellLayout) getChildAt(page + 1); 1321 1322 if (leftPage != null && leftPage.getIsDragOverlapping()) { 1323 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left_holo); 1324 d.setBounds(mScrollX, paddingTop, mScrollX + d.getIntrinsicWidth(), 1325 height - paddingBottom); 1326 d.draw(canvas); 1327 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 1328 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right_holo); 1329 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), paddingTop, mScrollX + width, 1330 height - paddingBottom); 1331 d.draw(canvas); 1332 } 1333 } 1334 } 1335 1336 @Override 1337 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1338 if (!mLauncher.isAllAppsVisible()) { 1339 final Folder openFolder = getOpenFolder(); 1340 if (openFolder != null) { 1341 return openFolder.requestFocus(direction, previouslyFocusedRect); 1342 } else { 1343 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1344 } 1345 } 1346 return false; 1347 } 1348 1349 @Override 1350 public int getDescendantFocusability() { 1351 if (isSmall()) { 1352 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1353 } 1354 return super.getDescendantFocusability(); 1355 } 1356 1357 @Override 1358 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1359 if (!mLauncher.isAllAppsVisible()) { 1360 final Folder openFolder = getOpenFolder(); 1361 if (openFolder != null) { 1362 openFolder.addFocusables(views, direction); 1363 } else { 1364 super.addFocusables(views, direction, focusableMode); 1365 } 1366 } 1367 } 1368 1369 public boolean isSmall() { 1370 return mState == State.SMALL || mState == State.SPRING_LOADED; 1371 } 1372 1373 void enableChildrenCache(int fromPage, int toPage) { 1374 if (fromPage > toPage) { 1375 final int temp = fromPage; 1376 fromPage = toPage; 1377 toPage = temp; 1378 } 1379 1380 final int screenCount = getChildCount(); 1381 1382 fromPage = Math.max(fromPage, 0); 1383 toPage = Math.min(toPage, screenCount - 1); 1384 1385 for (int i = fromPage; i <= toPage; i++) { 1386 final CellLayout layout = (CellLayout) getChildAt(i); 1387 layout.setChildrenDrawnWithCacheEnabled(true); 1388 layout.setChildrenDrawingCacheEnabled(true); 1389 } 1390 } 1391 1392 void clearChildrenCache() { 1393 final int screenCount = getChildCount(); 1394 for (int i = 0; i < screenCount; i++) { 1395 final CellLayout layout = (CellLayout) getChildAt(i); 1396 layout.setChildrenDrawnWithCacheEnabled(false); 1397 // In software mode, we don't want the items to continue to be drawn into bitmaps 1398 if (!isHardwareAccelerated()) { 1399 layout.setChildrenDrawingCacheEnabled(false); 1400 } 1401 } 1402 } 1403 1404 private void updateChildrenLayersEnabled() { 1405 boolean small = isSmall() || mIsSwitchingState; 1406 boolean dragging = mAnimatingViewIntoPlace || mIsDragOccuring; 1407 boolean enableChildrenLayers = small || dragging || isPageMoving(); 1408 1409 if (enableChildrenLayers != mChildrenLayersEnabled) { 1410 mChildrenLayersEnabled = enableChildrenLayers; 1411 for (int i = 0; i < getPageCount(); i++) { 1412 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(mChildrenLayersEnabled); 1413 } 1414 } 1415 } 1416 1417 protected void onWallpaperTap(MotionEvent ev) { 1418 final int[] position = mTempCell; 1419 getLocationOnScreen(position); 1420 1421 int pointerIndex = ev.getActionIndex(); 1422 position[0] += (int) ev.getX(pointerIndex); 1423 position[1] += (int) ev.getY(pointerIndex); 1424 1425 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1426 ev.getAction() == MotionEvent.ACTION_UP 1427 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1428 position[0], position[1], 0, null); 1429 } 1430 1431 /* 1432 * This interpolator emulates the rate at which the perceived scale of an object changes 1433 * as its distance from a camera increases. When this interpolator is applied to a scale 1434 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1435 * from the camera. 1436 */ 1437 static class ZInterpolator implements TimeInterpolator { 1438 private float focalLength; 1439 1440 public ZInterpolator(float foc) { 1441 focalLength = foc; 1442 } 1443 1444 public float getInterpolation(float input) { 1445 return (1.0f - focalLength / (focalLength + input)) / 1446 (1.0f - focalLength / (focalLength + 1.0f)); 1447 } 1448 } 1449 1450 /* 1451 * The exact reverse of ZInterpolator. 1452 */ 1453 static class InverseZInterpolator implements TimeInterpolator { 1454 private ZInterpolator zInterpolator; 1455 public InverseZInterpolator(float foc) { 1456 zInterpolator = new ZInterpolator(foc); 1457 } 1458 public float getInterpolation(float input) { 1459 return 1 - zInterpolator.getInterpolation(1 - input); 1460 } 1461 } 1462 1463 /* 1464 * ZInterpolator compounded with an ease-out. 1465 */ 1466 static class ZoomOutInterpolator implements TimeInterpolator { 1467 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(0.75f); 1468 private final ZInterpolator zInterpolator = new ZInterpolator(0.13f); 1469 1470 public float getInterpolation(float input) { 1471 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1472 } 1473 } 1474 1475 /* 1476 * InvereZInterpolator compounded with an ease-out. 1477 */ 1478 static class ZoomInInterpolator implements TimeInterpolator { 1479 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1480 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1481 1482 public float getInterpolation(float input) { 1483 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1484 } 1485 } 1486 1487 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1488 1489 /* 1490 * 1491 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1492 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1493 * 1494 * These methods mark the appropriate pages as accepting drops (which alters their visual 1495 * appearance). 1496 * 1497 */ 1498 public void onDragStartedWithItem(View v) { 1499 final Canvas canvas = new Canvas(); 1500 1501 // The outline is used to visualize where the item will land if dropped 1502 mDragOutline = createDragOutline(v, canvas, DRAG_BITMAP_PADDING); 1503 } 1504 1505 public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, Paint alphaClipPaint) { 1506 final Canvas canvas = new Canvas(); 1507 1508 int[] size = estimateItemSize(info.spanX, info.spanY, info, false); 1509 1510 // The outline is used to visualize where the item will land if dropped 1511 mDragOutline = createDragOutline(b, canvas, DRAG_BITMAP_PADDING, size[0], 1512 size[1], alphaClipPaint); 1513 } 1514 1515 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1516 // never dragged over 1517 public void onDragStopped(boolean success) { 1518 // In the success case, DragController has already called onDragExit() 1519 if (!success) { 1520 doDragExit(null); 1521 } 1522 } 1523 1524 public void exitWidgetResizeMode() { 1525 DragLayer dragLayer = mLauncher.getDragLayer(); 1526 dragLayer.clearAllResizeFrames(); 1527 } 1528 1529 private void initAnimationArrays() { 1530 final int childCount = getChildCount(); 1531 if (mOldTranslationXs != null) return; 1532 mOldTranslationXs = new float[childCount]; 1533 mOldTranslationYs = new float[childCount]; 1534 mOldScaleXs = new float[childCount]; 1535 mOldScaleYs = new float[childCount]; 1536 mOldBackgroundAlphas = new float[childCount]; 1537 mOldBackgroundAlphaMultipliers = new float[childCount]; 1538 mOldAlphas = new float[childCount]; 1539 mOldRotationYs = new float[childCount]; 1540 mNewTranslationXs = new float[childCount]; 1541 mNewTranslationYs = new float[childCount]; 1542 mNewScaleXs = new float[childCount]; 1543 mNewScaleYs = new float[childCount]; 1544 mNewBackgroundAlphas = new float[childCount]; 1545 mNewBackgroundAlphaMultipliers = new float[childCount]; 1546 mNewAlphas = new float[childCount]; 1547 mNewRotationYs = new float[childCount]; 1548 } 1549 1550 Animator getChangeStateAnimation(final State state, boolean animated) { 1551 return getChangeStateAnimation(state, animated, 0); 1552 } 1553 1554 Animator getChangeStateAnimation(final State state, boolean animated, int delay) { 1555 if (mState == state) { 1556 return null; 1557 } 1558 1559 // Initialize animation arrays for the first time if necessary 1560 initAnimationArrays(); 1561 1562 AnimatorSet anim = animated ? new AnimatorSet() : null; 1563 1564 // Stop any scrolling, move to the current page right away 1565 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1566 1567 final State oldState = mState; 1568 final boolean oldStateIsNormal = (oldState == State.NORMAL); 1569 final boolean oldStateIsSmall = (oldState == State.SMALL); 1570 mState = state; 1571 final boolean stateIsNormal = (state == State.NORMAL); 1572 final boolean stateIsSpringLoaded = (state == State.SPRING_LOADED); 1573 final boolean stateIsSmall = (state == State.SMALL); 1574 float finalScaleFactor = 1.0f; 1575 float finalBackgroundAlpha = stateIsSpringLoaded ? 1.0f : 0f; 1576 float translationX = 0; 1577 float translationY = 0; 1578 boolean zoomIn = true; 1579 1580 if (state != State.NORMAL) { 1581 finalScaleFactor = mSpringLoadedShrinkFactor - (stateIsSmall ? 0.1f : 0); 1582 if (oldStateIsNormal && stateIsSmall) { 1583 zoomIn = false; 1584 setLayoutScale(finalScaleFactor); 1585 updateChildrenLayersEnabled(); 1586 } else { 1587 finalBackgroundAlpha = 1.0f; 1588 setLayoutScale(finalScaleFactor); 1589 } 1590 } else { 1591 setLayoutScale(1.0f); 1592 } 1593 1594 final int duration = zoomIn ? 1595 getResources().getInteger(R.integer.config_workspaceUnshrinkTime) : 1596 getResources().getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1597 for (int i = 0; i < getChildCount(); i++) { 1598 final CellLayout cl = (CellLayout) getChildAt(i); 1599 float rotation = 0f; 1600 float initialAlpha = cl.getAlpha(); 1601 float finalAlphaMultiplierValue = 1f; 1602 float finalAlpha = (!mFadeInAdjacentScreens || stateIsSpringLoaded || 1603 (i == mCurrentPage)) ? 1f : 0f; 1604 1605 // Determine the pages alpha during the state transition 1606 if ((oldStateIsSmall && stateIsNormal) || 1607 (oldStateIsNormal && stateIsSmall)) { 1608 // To/from workspace - only show the current page unless the transition is not 1609 // animated and the animation end callback below doesn't run 1610 if (i == mCurrentPage || !animated) { 1611 finalAlpha = 1f; 1612 finalAlphaMultiplierValue = 0f; 1613 } else { 1614 initialAlpha = 0f; 1615 finalAlpha = 0f; 1616 } 1617 } 1618 1619 // Update the rotation of the screen (don't apply rotation on Phone UI) 1620 if (LauncherApplication.isScreenLarge()) { 1621 if (i < mCurrentPage) { 1622 rotation = WORKSPACE_ROTATION; 1623 } else if (i > mCurrentPage) { 1624 rotation = -WORKSPACE_ROTATION; 1625 } 1626 } 1627 1628 // If the screen is not xlarge, then don't rotate the CellLayouts 1629 // NOTE: If we don't update the side pages alpha, then we should not hide the side 1630 // pages. see unshrink(). 1631 if (LauncherApplication.isScreenLarge()) { 1632 translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1633 } 1634 1635 mOldAlphas[i] = initialAlpha; 1636 mNewAlphas[i] = finalAlpha; 1637 if (animated) { 1638 mOldTranslationXs[i] = cl.getTranslationX(); 1639 mOldTranslationYs[i] = cl.getTranslationY(); 1640 mOldScaleXs[i] = cl.getScaleX(); 1641 mOldScaleYs[i] = cl.getScaleY(); 1642 mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1643 mOldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1644 mOldRotationYs[i] = cl.getRotationY(); 1645 1646 mNewTranslationXs[i] = translationX; 1647 mNewTranslationYs[i] = translationY; 1648 mNewScaleXs[i] = finalScaleFactor; 1649 mNewScaleYs[i] = finalScaleFactor; 1650 mNewBackgroundAlphas[i] = finalBackgroundAlpha; 1651 mNewBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1652 mNewRotationYs[i] = rotation; 1653 } else { 1654 cl.setTranslationX(translationX); 1655 cl.setTranslationY(translationY); 1656 cl.setScaleX(finalScaleFactor); 1657 cl.setScaleY(finalScaleFactor); 1658 cl.setBackgroundAlpha(finalBackgroundAlpha); 1659 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1660 cl.setAlpha(finalAlpha); 1661 cl.setRotationY(rotation); 1662 } 1663 } 1664 1665 if (animated) { 1666 for (int index = 0; index < getChildCount(); index++) { 1667 final int i = index; 1668 final CellLayout cl = (CellLayout) getChildAt(i); 1669 if (mOldAlphas[i] == 0 && mNewAlphas[i] == 0) { 1670 cl.setTranslationX(mNewTranslationXs[i]); 1671 cl.setTranslationY(mNewTranslationYs[i]); 1672 cl.setScaleX(mNewScaleXs[i]); 1673 cl.setScaleY(mNewScaleYs[i]); 1674 cl.setBackgroundAlpha(mNewBackgroundAlphas[i]); 1675 cl.setBackgroundAlphaMultiplier(mNewBackgroundAlphaMultipliers[i]); 1676 cl.setAlpha(mNewAlphas[i]); 1677 cl.setRotationY(mNewRotationYs[i]); 1678 } else { 1679 LauncherViewPropertyAnimator a = new LauncherViewPropertyAnimator(cl); 1680 a.translationX(mNewTranslationXs[i]) 1681 .translationY(mNewTranslationYs[i]) 1682 .scaleX(mNewScaleXs[i]) 1683 .scaleY(mNewScaleYs[i]) 1684 .setDuration(duration) 1685 .setInterpolator(mZoomInInterpolator); 1686 if (mOldAlphas[i] != mNewAlphas[i]) { 1687 a.alpha(mNewAlphas[i]); 1688 } 1689 anim.play(a); 1690 if (mOldRotationYs[i] != 0 || mNewRotationYs[i] != 0) { 1691 ValueAnimator rotate = ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1692 rotate.setInterpolator(new DecelerateInterpolator(2.0f)); 1693 rotate.addUpdateListener(new LauncherAnimatorUpdateListener() { 1694 public void onAnimationUpdate(float a, float b) { 1695 cl.setRotationY(a * mOldRotationYs[i] + b * mNewRotationYs[i]); 1696 } 1697 }); 1698 anim.play(rotate); 1699 } 1700 if (mOldBackgroundAlphas[i] != 0 || 1701 mNewBackgroundAlphas[i] != 0 || 1702 mOldBackgroundAlphaMultipliers[i] != 0 || 1703 mNewBackgroundAlphaMultipliers[i] != 0) { 1704 ValueAnimator bgAnim = ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1705 bgAnim.setInterpolator(mZoomInInterpolator); 1706 bgAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1707 public void onAnimationUpdate(float a, float b) { 1708 cl.setBackgroundAlpha( 1709 a * mOldBackgroundAlphas[i] + 1710 b * mNewBackgroundAlphas[i]); 1711 cl.setBackgroundAlphaMultiplier( 1712 a * mOldBackgroundAlphaMultipliers[i] + 1713 b * mNewBackgroundAlphaMultipliers[i]); 1714 } 1715 }); 1716 anim.play(bgAnim); 1717 } 1718 } 1719 } 1720 anim.setStartDelay(delay); 1721 } 1722 1723 if (stateIsSpringLoaded) { 1724 // Right now we're covered by Apps Customize 1725 // Show the background gradient immediately, so the gradient will 1726 // be showing once AppsCustomize disappears 1727 animateBackgroundGradient(getResources().getInteger( 1728 R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, false); 1729 } else { 1730 // Fade the background gradient away 1731 animateBackgroundGradient(0f, true); 1732 } 1733 return anim; 1734 } 1735 1736 @Override 1737 public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) { 1738 mIsSwitchingState = true; 1739 } 1740 1741 @Override 1742 public void onLauncherTransitionStep(Launcher l, float t) { 1743 mTransitionProgress = t; 1744 } 1745 1746 @Override 1747 public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) { 1748 mIsSwitchingState = false; 1749 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 1750 updateChildrenLayersEnabled(); 1751 // The code in getChangeStateAnimation to determine initialAlpha and finalAlpha will ensure 1752 // ensure that only the current page is visible during (and subsequently, after) the 1753 // transition animation. If fade adjacent pages is disabled, then re-enable the page 1754 // visibility after the transition animation. 1755 if (!mFadeInAdjacentScreens) { 1756 for (int i = 0; i < getChildCount(); i++) { 1757 final CellLayout cl = (CellLayout) getChildAt(i); 1758 cl.setAlpha(1f); 1759 } 1760 } 1761 } 1762 1763 @Override 1764 public View getContent() { 1765 return this; 1766 } 1767 1768 /** 1769 * Draw the View v into the given Canvas. 1770 * 1771 * @param v the view to draw 1772 * @param destCanvas the canvas to draw on 1773 * @param padding the horizontal and vertical padding to use when drawing 1774 */ 1775 private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { 1776 final Rect clipRect = mTempRect; 1777 v.getDrawingRect(clipRect); 1778 1779 boolean textVisible = false; 1780 1781 destCanvas.save(); 1782 if (v instanceof TextView && pruneToDrawable) { 1783 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1784 clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); 1785 destCanvas.translate(padding / 2, padding / 2); 1786 d.draw(destCanvas); 1787 } else { 1788 if (v instanceof FolderIcon) { 1789 // For FolderIcons the text can bleed into the icon area, and so we need to 1790 // hide the text completely (which can't be achieved by clipping). 1791 if (((FolderIcon) v).getTextVisible()) { 1792 ((FolderIcon) v).setTextVisible(false); 1793 textVisible = true; 1794 } 1795 } else if (v instanceof BubbleTextView) { 1796 final BubbleTextView tv = (BubbleTextView) v; 1797 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1798 tv.getLayout().getLineTop(0); 1799 } else if (v instanceof TextView) { 1800 final TextView tv = (TextView) v; 1801 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1802 tv.getLayout().getLineTop(0); 1803 } 1804 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1805 destCanvas.clipRect(clipRect, Op.REPLACE); 1806 v.draw(destCanvas); 1807 1808 // Restore text visibility of FolderIcon if necessary 1809 if (textVisible) { 1810 ((FolderIcon) v).setTextVisible(true); 1811 } 1812 } 1813 destCanvas.restore(); 1814 } 1815 1816 /** 1817 * Returns a new bitmap to show when the given View is being dragged around. 1818 * Responsibility for the bitmap is transferred to the caller. 1819 */ 1820 public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1821 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1822 Bitmap b; 1823 1824 if (v instanceof TextView) { 1825 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1826 b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, 1827 d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); 1828 } else { 1829 b = Bitmap.createBitmap( 1830 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1831 } 1832 1833 canvas.setBitmap(b); 1834 drawDragView(v, canvas, padding, true); 1835 canvas.setBitmap(null); 1836 1837 return b; 1838 } 1839 1840 /** 1841 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1842 * Responsibility for the bitmap is transferred to the caller. 1843 */ 1844 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1845 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1846 final Bitmap b = Bitmap.createBitmap( 1847 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1848 1849 canvas.setBitmap(b); 1850 drawDragView(v, canvas, padding, true); 1851 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1852 canvas.setBitmap(null); 1853 return b; 1854 } 1855 1856 /** 1857 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1858 * Responsibility for the bitmap is transferred to the caller. 1859 */ 1860 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h, 1861 Paint alphaClipPaint) { 1862 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1863 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1864 canvas.setBitmap(b); 1865 1866 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 1867 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 1868 (h - padding) / (float) orig.getHeight()); 1869 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 1870 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 1871 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 1872 1873 // center the image 1874 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 1875 1876 canvas.drawBitmap(orig, src, dst, null); 1877 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor, 1878 alphaClipPaint); 1879 canvas.setBitmap(null); 1880 1881 return b; 1882 } 1883 1884 void startDrag(CellLayout.CellInfo cellInfo) { 1885 View child = cellInfo.cell; 1886 1887 // Make sure the drag was started by a long press as opposed to a long click. 1888 if (!child.isInTouchMode()) { 1889 return; 1890 } 1891 1892 mDragInfo = cellInfo; 1893 child.setVisibility(INVISIBLE); 1894 CellLayout layout = (CellLayout) child.getParent().getParent(); 1895 layout.prepareChildForDrag(child); 1896 1897 child.clearFocus(); 1898 child.setPressed(false); 1899 1900 final Canvas canvas = new Canvas(); 1901 1902 // The outline is used to visualize where the item will land if dropped 1903 mDragOutline = createDragOutline(child, canvas, DRAG_BITMAP_PADDING); 1904 beginDragShared(child, this); 1905 } 1906 1907 public void beginDragShared(View child, DragSource source) { 1908 Resources r = getResources(); 1909 1910 // The drag bitmap follows the touch point around on the screen 1911 final Bitmap b = createDragBitmap(child, new Canvas(), DRAG_BITMAP_PADDING); 1912 1913 final int bmpWidth = b.getWidth(); 1914 final int bmpHeight = b.getHeight(); 1915 1916 mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 1917 int dragLayerX = 1918 Math.round(mTempXY[0] - (bmpWidth - child.getScaleX() * child.getWidth()) / 2); 1919 int dragLayerY = 1920 Math.round(mTempXY[1] - (bmpHeight - child.getScaleY() * bmpHeight) / 2 1921 - DRAG_BITMAP_PADDING / 2); 1922 1923 Point dragVisualizeOffset = null; 1924 Rect dragRect = null; 1925 if (child instanceof BubbleTextView || child instanceof PagedViewIcon) { 1926 int iconSize = r.getDimensionPixelSize(R.dimen.app_icon_size); 1927 int iconPaddingTop = r.getDimensionPixelSize(R.dimen.app_icon_padding_top); 1928 int top = child.getPaddingTop(); 1929 int left = (bmpWidth - iconSize) / 2; 1930 int right = left + iconSize; 1931 int bottom = top + iconSize; 1932 dragLayerY += top; 1933 // Note: The drag region is used to calculate drag layer offsets, but the 1934 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 1935 dragVisualizeOffset = new Point(-DRAG_BITMAP_PADDING / 2, 1936 iconPaddingTop - DRAG_BITMAP_PADDING / 2); 1937 dragRect = new Rect(left, top, right, bottom); 1938 } else if (child instanceof FolderIcon) { 1939 int previewSize = r.getDimensionPixelSize(R.dimen.folder_preview_size); 1940 dragRect = new Rect(0, 0, child.getWidth(), previewSize); 1941 } 1942 1943 // Clear the pressed state if necessary 1944 if (child instanceof BubbleTextView) { 1945 BubbleTextView icon = (BubbleTextView) child; 1946 icon.clearPressedOrFocusedBackground(); 1947 } 1948 1949 mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 1950 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect, child.getScaleX()); 1951 b.recycle(); 1952 1953 // Show the scrolling indicator when you pick up an item 1954 showScrollingIndicator(false); 1955 } 1956 1957 void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, int screen, 1958 int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { 1959 View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); 1960 1961 final int[] cellXY = new int[2]; 1962 target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1963 addInScreen(view, container, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1964 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, cellXY[0], 1965 cellXY[1]); 1966 } 1967 1968 public boolean transitionStateShouldAllowDrop() { 1969 return ((!isSwitchingState() || mTransitionProgress > 0.5f) && mState != State.SMALL); 1970 } 1971 1972 /** 1973 * {@inheritDoc} 1974 */ 1975 public boolean acceptDrop(DragObject d) { 1976 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1977 if (d.dragSource != this) { 1978 // Don't accept the drop if we're not over a screen at time of drop 1979 if (mDragTargetLayout == null) { 1980 return false; 1981 } 1982 if (!transitionStateShouldAllowDrop()) return false; 1983 1984 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 1985 d.dragView, mDragViewVisualCenter); 1986 1987 // We want the point to be mapped to the dragTarget. 1988 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 1989 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 1990 } else { 1991 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 1992 } 1993 1994 int spanX = 1; 1995 int spanY = 1; 1996 View ignoreView = null; 1997 if (mDragInfo != null) { 1998 final CellLayout.CellInfo dragCellInfo = mDragInfo; 1999 spanX = dragCellInfo.spanX; 2000 spanY = dragCellInfo.spanY; 2001 ignoreView = dragCellInfo.cell; 2002 } else { 2003 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 2004 spanX = dragInfo.spanX; 2005 spanY = dragInfo.spanY; 2006 } 2007 2008 int minSpanX = spanX; 2009 int minSpanY = spanY; 2010 if (d.dragInfo instanceof PendingAddWidgetInfo) { 2011 minSpanX = ((PendingAddWidgetInfo) d.dragInfo).minSpanX; 2012 minSpanY = ((PendingAddWidgetInfo) d.dragInfo).minSpanY; 2013 } 2014 2015 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2016 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, mDragTargetLayout, 2017 mTargetCell); 2018 float distance = mDragTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2019 mDragViewVisualCenter[1], mTargetCell); 2020 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, 2021 mTargetCell, distance, true)) { 2022 return true; 2023 } 2024 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, 2025 mTargetCell, distance)) { 2026 return true; 2027 } 2028 2029 int[] resultSpan = new int[2]; 2030 mTargetCell = mDragTargetLayout.createArea((int) mDragViewVisualCenter[0], 2031 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2032 null, mTargetCell, resultSpan, CellLayout.MODE_ACCEPT_DROP); 2033 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2034 2035 // Don't accept the drop if there's no room for the item 2036 if (!foundCell) { 2037 // Don't show the message if we are dropping on the AllApps button and the hotseat 2038 // is full 2039 if (mTargetCell != null && mLauncher.isHotseatLayout(mDragTargetLayout)) { 2040 Hotseat hotseat = mLauncher.getHotseat(); 2041 if (hotseat.isAllAppsButtonRank( 2042 hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { 2043 return false; 2044 } 2045 } 2046 2047 mLauncher.showOutOfSpaceMessage(); 2048 return false; 2049 } 2050 } 2051 return true; 2052 } 2053 2054 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, float 2055 distance, boolean considerTimeout) { 2056 if (distance > mMaxDistanceForFolderCreation) return false; 2057 2058 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2059 2060 boolean hasntMoved = false; 2061 if (mDragInfo != null) { 2062 hasntMoved = dropOverView == mDragInfo.cell; 2063 } 2064 2065 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2066 return false; 2067 } 2068 2069 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2070 boolean willBecomeShortcut = 2071 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2072 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2073 2074 return (aboveShortcut && willBecomeShortcut); 2075 } 2076 2077 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell, 2078 float distance) { 2079 if (distance > mMaxDistanceForFolderCreation) return false; 2080 2081 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2082 if (dropOverView instanceof FolderIcon) { 2083 FolderIcon fi = (FolderIcon) dropOverView; 2084 if (fi.acceptDrop(dragInfo)) { 2085 return true; 2086 } 2087 } 2088 return false; 2089 } 2090 2091 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2092 int[] targetCell, float distance, boolean external, DragView dragView, 2093 Runnable postAnimationRunnable) { 2094 if (distance > mMaxDistanceForFolderCreation) return false; 2095 View v = target.getChildAt(targetCell[0], targetCell[1]); 2096 boolean hasntMoved = false; 2097 if (mDragInfo != null) { 2098 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2099 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2100 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2101 } 2102 2103 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2104 mCreateUserFolderOnDrop = false; 2105 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 2106 2107 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2108 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2109 2110 if (aboveShortcut && willBecomeShortcut) { 2111 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2112 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2113 // if the drag started here, we need to remove it from the workspace 2114 if (!external) { 2115 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2116 } 2117 2118 Rect folderLocation = new Rect(); 2119 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2120 target.removeView(v); 2121 2122 FolderIcon fi = 2123 mLauncher.addFolder(target, container, screen, targetCell[0], targetCell[1]); 2124 destInfo.cellX = -1; 2125 destInfo.cellY = -1; 2126 sourceInfo.cellX = -1; 2127 sourceInfo.cellY = -1; 2128 2129 // If the dragView is null, we can't animate 2130 boolean animate = dragView != null; 2131 if (animate) { 2132 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2133 postAnimationRunnable); 2134 } else { 2135 fi.addItem(destInfo); 2136 fi.addItem(sourceInfo); 2137 } 2138 return true; 2139 } 2140 return false; 2141 } 2142 2143 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2144 float distance, DragObject d, boolean external) { 2145 if (distance > mMaxDistanceForFolderCreation) return false; 2146 2147 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2148 if (dropOverView instanceof FolderIcon) { 2149 FolderIcon fi = (FolderIcon) dropOverView; 2150 if (fi.acceptDrop(d.dragInfo)) { 2151 fi.onDrop(d); 2152 2153 // if the drag started here, we need to remove it from the workspace 2154 if (!external) { 2155 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2156 } 2157 return true; 2158 } 2159 } 2160 return false; 2161 } 2162 2163 public void onDrop(final DragObject d) { 2164 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2165 mDragViewVisualCenter); 2166 2167 // We want the point to be mapped to the dragTarget. 2168 if (mDragTargetLayout != null) { 2169 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2170 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2171 } else { 2172 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2173 } 2174 } 2175 2176 CellLayout dropTargetLayout = mDragTargetLayout; 2177 2178 int snapScreen = -1; 2179 boolean resizeOnDrop = false; 2180 if (d.dragSource != this) { 2181 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2182 (int) mDragViewVisualCenter[1] }; 2183 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2184 } else if (mDragInfo != null) { 2185 final View cell = mDragInfo.cell; 2186 2187 Runnable resizeRunnable = null; 2188 if (dropTargetLayout != null) { 2189 // Move internally 2190 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2191 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2192 long container = hasMovedIntoHotseat ? 2193 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2194 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2195 int screen = (mTargetCell[0] < 0) ? 2196 mDragInfo.screen : indexOfChild(dropTargetLayout); 2197 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2198 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2199 // First we find the cell nearest to point at which the item is 2200 // dropped, without any consideration to whether there is an item there. 2201 2202 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2203 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2204 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2205 mDragViewVisualCenter[1], mTargetCell); 2206 2207 // If the item being dropped is a shortcut and the nearest drop 2208 // cell also contains a shortcut, then create a folder with the two shortcuts. 2209 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2210 dropTargetLayout, mTargetCell, distance, false, d.dragView, null)) { 2211 return; 2212 } 2213 2214 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, 2215 distance, d, false)) { 2216 return; 2217 } 2218 2219 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2220 // we need to find the nearest cell location that is vacant 2221 ItemInfo item = (ItemInfo) d.dragInfo; 2222 int minSpanX = item.spanX; 2223 int minSpanY = item.spanY; 2224 if (item.minSpanX > 0 && item.minSpanY > 0) { 2225 minSpanX = item.minSpanX; 2226 minSpanY = item.minSpanY; 2227 } 2228 2229 int[] resultSpan = new int[2]; 2230 mTargetCell = mDragTargetLayout.createArea((int) mDragViewVisualCenter[0], 2231 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, cell, 2232 mTargetCell, resultSpan, CellLayout.MODE_ON_DROP); 2233 2234 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2235 if (foundCell && (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY)) { 2236 resizeOnDrop = true; 2237 item.spanX = resultSpan[0]; 2238 item.spanY = resultSpan[1]; 2239 } 2240 2241 if (mCurrentPage != screen && !hasMovedIntoHotseat) { 2242 snapScreen = screen; 2243 snapToPage(screen); 2244 } 2245 2246 if (foundCell) { 2247 final ItemInfo info = (ItemInfo) cell.getTag(); 2248 if (hasMovedLayouts) { 2249 // Reparent the view 2250 getParentCellLayoutForView(cell).removeView(cell); 2251 addInScreen(cell, container, screen, mTargetCell[0], mTargetCell[1], 2252 info.spanX, info.spanY); 2253 } 2254 2255 // update the item's position after drop 2256 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2257 lp.cellX = mTargetCell[0]; 2258 lp.cellY = mTargetCell[1]; 2259 lp.cellHSpan = item.spanX; 2260 lp.cellVSpan = item.spanY; 2261 cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screen, 2262 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2263 2264 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2265 cell instanceof LauncherAppWidgetHostView) { 2266 final CellLayout cellLayout = dropTargetLayout; 2267 // We post this call so that the widget has a chance to be placed 2268 // in its final location 2269 2270 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2271 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2272 if (pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2273 final Runnable addResizeFrame = new Runnable() { 2274 public void run() { 2275 DragLayer dragLayer = mLauncher.getDragLayer(); 2276 dragLayer.addResizeFrame(info, hostView, cellLayout); 2277 } 2278 }; 2279 resizeRunnable = (new Runnable() { 2280 public void run() { 2281 if (!isPageMoving()) { 2282 addResizeFrame.run(); 2283 } else { 2284 mDelayedResizeRunnable = addResizeFrame; 2285 } 2286 } 2287 }); 2288 } 2289 } 2290 2291 LauncherModel.moveItemInDatabase(mLauncher, info, container, screen, lp.cellX, 2292 lp.cellY); 2293 } else { 2294 // If we can't find a drop location, we return the item to its original position 2295 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2296 mTargetCell[0] = lp.cellX; 2297 mTargetCell[1] = lp.cellY; 2298 } 2299 } 2300 2301 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2302 final Runnable finalResizeRunnable = resizeRunnable; 2303 // Prepare it to be animated into its new position 2304 // This must be called after the view has been re-parented 2305 final Runnable onCompleteRunnable = new Runnable() { 2306 @Override 2307 public void run() { 2308 mAnimatingViewIntoPlace = false; 2309 updateChildrenLayersEnabled(); 2310 if (finalResizeRunnable != null) { 2311 finalResizeRunnable.run(); 2312 } 2313 } 2314 }; 2315 mAnimatingViewIntoPlace = true; 2316 if (d.dragView.hasDrawn()) { 2317 final ItemInfo info = (ItemInfo) cell.getTag(); 2318 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET) { 2319 int animationType = resizeOnDrop ? ANIMATE_INTO_POSITION_AND_RESIZE : 2320 ANIMATE_INTO_POSITION_AND_DISAPPEAR; 2321 animateWidgetDrop(info, parent, d.dragView, 2322 onCompleteRunnable, animationType, cell, false); 2323 } else { 2324 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2325 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2326 onCompleteRunnable, this); 2327 } 2328 } else { 2329 d.deferDragViewCleanupPostAnimation = false; 2330 cell.setVisibility(VISIBLE); 2331 } 2332 parent.onDropChild(cell); 2333 } 2334 } 2335 2336 public void setFinalScrollForPageChange(int screen) { 2337 if (screen >= 0) { 2338 mSavedScrollX = getScrollX(); 2339 CellLayout cl = (CellLayout) getChildAt(screen); 2340 mSavedTranslationX = cl.getTranslationX(); 2341 mSavedRotationY = cl.getRotationY(); 2342 final int newX = getChildOffset(screen) - getRelativeChildOffset(screen); 2343 setScrollX(newX); 2344 cl.setTranslationX(0f); 2345 cl.setRotationY(0f); 2346 } 2347 } 2348 2349 public void resetFinalScrollForPageChange(int screen) { 2350 if (screen >= 0) { 2351 CellLayout cl = (CellLayout) getChildAt(screen); 2352 setScrollX(mSavedScrollX); 2353 cl.setTranslationX(mSavedTranslationX); 2354 cl.setRotationY(mSavedRotationY); 2355 } 2356 } 2357 2358 public void getViewLocationRelativeToSelf(View v, int[] location) { 2359 getLocationInWindow(location); 2360 int x = location[0]; 2361 int y = location[1]; 2362 2363 v.getLocationInWindow(location); 2364 int vX = location[0]; 2365 int vY = location[1]; 2366 2367 location[0] = vX - x; 2368 location[1] = vY - y; 2369 } 2370 2371 public void onDragEnter(DragObject d) { 2372 mDragHasEnteredWorkspace = true; 2373 if (mDragTargetLayout != null) { 2374 mDragTargetLayout.setIsDragOverlapping(false); 2375 mDragTargetLayout.onDragExit(); 2376 } 2377 mDragTargetLayout = getCurrentDropLayout(); 2378 mDragTargetLayout.setIsDragOverlapping(true); 2379 mDragTargetLayout.onDragEnter(); 2380 2381 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2382 // don't need to show the outlines 2383 if (LauncherApplication.isScreenLarge()) { 2384 showOutlines(); 2385 } 2386 } 2387 2388 private void doDragExit(DragObject d) { 2389 // Clean up folders 2390 cleanupFolderCreation(d); 2391 2392 // Clean up reorder 2393 if (mReorderAlarm != null) { 2394 mReorderAlarm.cancelAlarm(); 2395 mLastReorderX = -1; 2396 mLastReorderY = -1; 2397 } 2398 2399 // Reset the scroll area and previous drag target 2400 onResetScrollArea(); 2401 2402 if (mDragTargetLayout != null) { 2403 mDragTargetLayout.setIsDragOverlapping(false); 2404 mDragTargetLayout.onDragExit(); 2405 } 2406 mLastDragOverView = null; 2407 mDragMode = DRAG_MODE_NONE; 2408 mSpringLoadedDragController.cancel(); 2409 2410 if (!mIsPageMoving) { 2411 hideOutlines(); 2412 } 2413 } 2414 2415 public void onDragExit(DragObject d) { 2416 mDragHasEnteredWorkspace = false; 2417 doDragExit(d); 2418 } 2419 2420 public DropTarget getDropTargetDelegate(DragObject d) { 2421 return null; 2422 } 2423 2424 /** 2425 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 2426 * in the returned structure related to the widgets that match the drop (or a null list if it is 2427 * a shortcut drop). If the drop is not accepted then a null structure is returned. 2428 */ 2429 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 2430 final LauncherModel model = mLauncher.getModel(); 2431 final ClipDescription desc = event.getClipDescription(); 2432 final int mimeTypeCount = desc.getMimeTypeCount(); 2433 for (int i = 0; i < mimeTypeCount; ++i) { 2434 final String mimeType = desc.getMimeType(i); 2435 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 2436 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 2437 } else { 2438 final List<WidgetMimeTypeHandlerData> widgets = 2439 model.resolveWidgetsForMimeType(mContext, mimeType); 2440 if (widgets.size() > 0) { 2441 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 2442 } 2443 } 2444 } 2445 return null; 2446 } 2447 2448 /* 2449 * 2450 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2451 * coordinate space. The argument xy is modified with the return result. 2452 * 2453 */ 2454 void mapPointFromSelfToChild(View v, float[] xy) { 2455 mapPointFromSelfToChild(v, xy, null); 2456 } 2457 2458 /* 2459 * 2460 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2461 * coordinate space. The argument xy is modified with the return result. 2462 * 2463 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2464 * computing it itself; we use this to avoid redundant matrix inversions in 2465 * findMatchingPageForDragOver 2466 * 2467 */ 2468 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2469 if (cachedInverseMatrix == null) { 2470 v.getMatrix().invert(mTempInverseMatrix); 2471 cachedInverseMatrix = mTempInverseMatrix; 2472 } 2473 int scrollX = mScrollX; 2474 if (mNextPage != INVALID_PAGE) { 2475 scrollX = mScroller.getFinalX(); 2476 } 2477 xy[0] = xy[0] + scrollX - v.getLeft(); 2478 xy[1] = xy[1] + mScrollY - v.getTop(); 2479 cachedInverseMatrix.mapPoints(xy); 2480 } 2481 2482 /* 2483 * Maps a point from the Workspace's coordinate system to another sibling view's. (Workspace 2484 * covers the full screen) 2485 */ 2486 void mapPointFromSelfToSibling(View v, float[] xy) { 2487 xy[0] = xy[0] - v.getLeft(); 2488 xy[1] = xy[1] - v.getTop(); 2489 } 2490 2491 /* 2492 * 2493 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2494 * the parent View's coordinate space. The argument xy is modified with the return result. 2495 * 2496 */ 2497 void mapPointFromChildToSelf(View v, float[] xy) { 2498 v.getMatrix().mapPoints(xy); 2499 int scrollX = mScrollX; 2500 if (mNextPage != INVALID_PAGE) { 2501 scrollX = mScroller.getFinalX(); 2502 } 2503 xy[0] -= (scrollX - v.getLeft()); 2504 xy[1] -= (mScrollY - v.getTop()); 2505 } 2506 2507 static private float squaredDistance(float[] point1, float[] point2) { 2508 float distanceX = point1[0] - point2[0]; 2509 float distanceY = point2[1] - point2[1]; 2510 return distanceX * distanceX + distanceY * distanceY; 2511 } 2512 2513 /* 2514 * 2515 * Returns true if the passed CellLayout cl overlaps with dragView 2516 * 2517 */ 2518 boolean overlaps(CellLayout cl, DragView dragView, 2519 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2520 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2521 final float[] draggedItemTopLeft = mTempDragCoordinates; 2522 draggedItemTopLeft[0] = dragViewX; 2523 draggedItemTopLeft[1] = dragViewY; 2524 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2525 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2526 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2527 2528 // Transform the dragged item's top left coordinates 2529 // to the CellLayout's local coordinates 2530 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2531 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2532 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2533 2534 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2535 // Transform the dragged item's bottom right coordinates 2536 // to the CellLayout's local coordinates 2537 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2538 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2539 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2540 2541 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2542 float overlap = (overlapRegionRight - overlapRegionLeft) * 2543 (overlapRegionBottom - overlapRegionTop); 2544 if (overlap > 0) { 2545 return true; 2546 } 2547 } 2548 } 2549 return false; 2550 } 2551 2552 /* 2553 * 2554 * This method returns the CellLayout that is currently being dragged to. In order to drag 2555 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2556 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2557 * 2558 * Return null if no CellLayout is currently being dragged over 2559 * 2560 */ 2561 private CellLayout findMatchingPageForDragOver( 2562 DragView dragView, float originX, float originY, boolean exact) { 2563 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2564 // with the item being dragged and then choose the one that's closest to the touch point 2565 final int screenCount = getChildCount(); 2566 CellLayout bestMatchingScreen = null; 2567 float smallestDistSoFar = Float.MAX_VALUE; 2568 2569 for (int i = 0; i < screenCount; i++) { 2570 CellLayout cl = (CellLayout) getChildAt(i); 2571 2572 final float[] touchXy = {originX, originY}; 2573 // Transform the touch coordinates to the CellLayout's local coordinates 2574 // If the touch point is within the bounds of the cell layout, we can return immediately 2575 cl.getMatrix().invert(mTempInverseMatrix); 2576 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2577 2578 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2579 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2580 return cl; 2581 } 2582 2583 if (!exact) { 2584 // Get the center of the cell layout in screen coordinates 2585 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2586 cellLayoutCenter[0] = cl.getWidth()/2; 2587 cellLayoutCenter[1] = cl.getHeight()/2; 2588 mapPointFromChildToSelf(cl, cellLayoutCenter); 2589 2590 touchXy[0] = originX; 2591 touchXy[1] = originY; 2592 2593 // Calculate the distance between the center of the CellLayout 2594 // and the touch point 2595 float dist = squaredDistance(touchXy, cellLayoutCenter); 2596 2597 if (dist < smallestDistSoFar) { 2598 smallestDistSoFar = dist; 2599 bestMatchingScreen = cl; 2600 } 2601 } 2602 } 2603 return bestMatchingScreen; 2604 } 2605 2606 // This is used to compute the visual center of the dragView. This point is then 2607 // used to visualize drop locations and determine where to drop an item. The idea is that 2608 // the visual center represents the user's interpretation of where the item is, and hence 2609 // is the appropriate point to use when determining drop location. 2610 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2611 DragView dragView, float[] recycle) { 2612 float res[]; 2613 if (recycle == null) { 2614 res = new float[2]; 2615 } else { 2616 res = recycle; 2617 } 2618 2619 // First off, the drag view has been shifted in a way that is not represented in the 2620 // x and y values or the x/yOffsets. Here we account for that shift. 2621 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2622 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2623 2624 // These represent the visual top and left of drag view if a dragRect was provided. 2625 // If a dragRect was not provided, then they correspond to the actual view left and 2626 // top, as the dragRect is in that case taken to be the entire dragView. 2627 // R.dimen.dragViewOffsetY. 2628 int left = x - xOffset; 2629 int top = y - yOffset; 2630 2631 // In order to find the visual center, we shift by half the dragRect 2632 res[0] = left + dragView.getDragRegion().width() / 2; 2633 res[1] = top + dragView.getDragRegion().height() / 2; 2634 2635 return res; 2636 } 2637 2638 private boolean isDragWidget(DragObject d) { 2639 return (d.dragInfo instanceof LauncherAppWidgetInfo || 2640 d.dragInfo instanceof PendingAddWidgetInfo); 2641 } 2642 private boolean isExternalDragWidget(DragObject d) { 2643 return d.dragSource != this && isDragWidget(d); 2644 } 2645 2646 public void onDragOver(DragObject d) { 2647 // Skip drag over events while we are dragging over side pages 2648 if (mInScrollArea || mIsSwitchingState || mState == State.SMALL) return; 2649 2650 Rect r = new Rect(); 2651 CellLayout layout = null; 2652 ItemInfo item = (ItemInfo) d.dragInfo; 2653 2654 // Ensure that we have proper spans for the item that we are dropping 2655 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2656 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2657 d.dragView, mDragViewVisualCenter); 2658 2659 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2660 // Identify whether we have dragged over a side page 2661 if (isSmall()) { 2662 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 2663 mLauncher.getHotseat().getHitRect(r); 2664 if (r.contains(d.x, d.y)) { 2665 layout = mLauncher.getHotseat().getLayout(); 2666 } 2667 } 2668 if (layout == null) { 2669 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false); 2670 } 2671 if (layout != mDragTargetLayout) { 2672 // Cancel all intermediate folder states 2673 cleanupFolderCreation(d); 2674 2675 if (mDragTargetLayout != null) { 2676 mDragTargetLayout.setIsDragOverlapping(false); 2677 mDragTargetLayout.onDragExit(); 2678 } 2679 mDragTargetLayout = layout; 2680 if (mDragTargetLayout != null) { 2681 mDragTargetLayout.setIsDragOverlapping(true); 2682 mDragTargetLayout.onDragEnter(); 2683 } else { 2684 mLastDragOverView = null; 2685 mDragMode = DRAG_MODE_NONE; 2686 } 2687 2688 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 2689 if (isInSpringLoadedMode) { 2690 if (mLauncher.isHotseatLayout(layout)) { 2691 mSpringLoadedDragController.cancel(); 2692 } else { 2693 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2694 } 2695 } 2696 } 2697 } else { 2698 // Test to see if we are over the hotseat otherwise just use the current page 2699 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 2700 mLauncher.getHotseat().getHitRect(r); 2701 if (r.contains(d.x, d.y)) { 2702 layout = mLauncher.getHotseat().getLayout(); 2703 } 2704 } 2705 if (layout == null) { 2706 layout = getCurrentDropLayout(); 2707 } 2708 if (layout != mDragTargetLayout) { 2709 if (mDragTargetLayout != null) { 2710 mDragTargetLayout.setIsDragOverlapping(false); 2711 mDragTargetLayout.onDragExit(); 2712 } 2713 mDragTargetLayout = layout; 2714 mDragTargetLayout.setIsDragOverlapping(true); 2715 mDragTargetLayout.onDragEnter(); 2716 } 2717 } 2718 2719 // Handle the drag over 2720 if (mDragTargetLayout != null) { 2721 // We want the point to be mapped to the dragTarget. 2722 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2723 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2724 } else { 2725 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2726 } 2727 ItemInfo info = (ItemInfo) d.dragInfo; 2728 2729 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2730 (int) mDragViewVisualCenter[1], 1, 1, mDragTargetLayout, mTargetCell); 2731 float targetCellDistance = mDragTargetLayout.getDistanceFromCell( 2732 mDragViewVisualCenter[0], mDragViewVisualCenter[1], mTargetCell); 2733 2734 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2735 mTargetCell[1]); 2736 2737 final View lastDragOverView = mLastDragOverView; 2738 if (mLastDragOverView != dragOverView) { 2739 mDragMode = DRAG_MODE_NONE; 2740 mLastDragOverView = dragOverView; 2741 if (mReorderAlarm != null) { 2742 mReorderAlarm.cancelAlarm(); 2743 } 2744 } 2745 2746 boolean folder = willCreateOrAddToFolder(info, mDragTargetLayout, mTargetCell, 2747 targetCellDistance, dragOverView, lastDragOverView); 2748 2749 int minSpanX = item.spanX; 2750 int minSpanY = item.spanY; 2751 if (item.minSpanX > 0 && item.minSpanY > 0) { 2752 minSpanX = item.minSpanX; 2753 minSpanY = item.minSpanY; 2754 } 2755 2756 if (!folder && !mReorderAlarm.alarmPending() && (mLastReorderX != mTargetCell[0] || 2757 mLastReorderY != mTargetCell[1])) { 2758 cancelFolderCreation(); 2759 ReorderAlarmListener listener = new ReorderAlarmListener(mDragViewVisualCenter, 2760 minSpanX, minSpanY, item.spanX, item.spanY, d.dragView, child); 2761 mReorderAlarm.setOnAlarmListener(listener); 2762 mReorderAlarm.setAlarm(REORDER_TIMEOUT); 2763 } else if (folder) { 2764 if (mReorderAlarm != null) { 2765 mReorderAlarm.cancelAlarm(); 2766 } 2767 } 2768 // TODO: need to determine what we're going to about visualizing drop locations 2769 /* 2770 boolean resize = resultSpan[0] != info.spanX || resultSpan[1] != info.spanY; 2771 if (!folder) { 2772 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2773 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2774 mTargetCell[0], mTargetCell[1], resultSpan[0], resultSpan[1], resize, 2775 d.dragView.getDragVisualizeOffset(), d.dragView.getDragRegion()); 2776 2777 } 2778 */ 2779 } 2780 } 2781 2782 private boolean willCreateOrAddToFolder(ItemInfo info, CellLayout targetLayout, 2783 int[] targetCell, float distance, View dragOverView, View lastDragOverView) { 2784 boolean userFolderPending = willCreateUserFolder(info, targetLayout, targetCell, distance, 2785 false); 2786 2787 if (userFolderPending && mDragMode == DRAG_MODE_NONE) { 2788 mFolderCreationAlarm.setOnAlarmListener(new 2789 FolderCreationAlarmListener(targetLayout, targetCell[0], targetCell[1])); 2790 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2791 } 2792 2793 boolean willAddToFolder = 2794 willAddToExistingUserFolder(info, targetLayout, targetCell, distance); 2795 2796 if (willAddToFolder && mDragMode == DRAG_MODE_NONE) { 2797 FolderIcon fi = ((FolderIcon) dragOverView); 2798 mDragMode = DRAG_MODE_ADD_TO_FOLDER; 2799 fi.onDragEnter(info); 2800 if (targetLayout != null) { 2801 targetLayout.clearDragOutlines(); 2802 } 2803 } 2804 2805 if (dragOverView != lastDragOverView || (mCreateUserFolderOnDrop && !userFolderPending) 2806 || (!willAddToFolder && mDragMode == DRAG_MODE_ADD_TO_FOLDER)) { 2807 cancelFolderCreation(); 2808 if (lastDragOverView != null && lastDragOverView instanceof FolderIcon) { 2809 ((FolderIcon) lastDragOverView).onDragExit(info); 2810 } 2811 } 2812 2813 return willAddToFolder || userFolderPending; 2814 } 2815 2816 private void cleanupFolderCreation(DragObject d) { 2817 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2818 mDragFolderRingAnimator.animateToNaturalState(); 2819 } 2820 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2821 if (d != null) { 2822 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2823 } 2824 } 2825 mFolderCreationAlarm.cancelAlarm(); 2826 } 2827 2828 private void cancelFolderCreation() { 2829 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2830 mDragFolderRingAnimator.animateToNaturalState(); 2831 } 2832 mCreateUserFolderOnDrop = false; 2833 mFolderCreationAlarm.cancelAlarm(); 2834 } 2835 2836 class FolderCreationAlarmListener implements OnAlarmListener { 2837 CellLayout layout; 2838 int cellX; 2839 int cellY; 2840 2841 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 2842 this.layout = layout; 2843 this.cellX = cellX; 2844 this.cellY = cellY; 2845 } 2846 2847 public void onAlarm(Alarm alarm) { 2848 if (mDragFolderRingAnimator == null) { 2849 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 2850 } 2851 mDragFolderRingAnimator.setCell(cellX, cellY); 2852 mDragFolderRingAnimator.setCellLayout(layout); 2853 mDragFolderRingAnimator.animateToAcceptState(); 2854 layout.showFolderAccept(mDragFolderRingAnimator); 2855 layout.clearDragOutlines(); 2856 mCreateUserFolderOnDrop = true; 2857 mDragMode = DRAG_MODE_CREATE_FOLDER; 2858 } 2859 } 2860 2861 class ReorderAlarmListener implements OnAlarmListener { 2862 float[] dragViewCenter; 2863 int minSpanX, minSpanY, spanX, spanY; 2864 DragView dragView; 2865 View child; 2866 2867 public ReorderAlarmListener(float[] dragViewCenter, int minSpanX, int minSpanY, int spanX, 2868 int spanY, DragView dragView, View child) { 2869 this.dragViewCenter = dragViewCenter; 2870 this.minSpanX = minSpanX; 2871 this.minSpanY = minSpanY; 2872 this.spanX = spanX; 2873 this.spanY = spanY; 2874 this.child = child; 2875 this.dragView = dragView; 2876 } 2877 2878 public void onAlarm(Alarm alarm) { 2879 int[] resultSpan = new int[2]; 2880 mTargetCell = mDragTargetLayout.createArea((int) mDragViewVisualCenter[0], 2881 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2882 child, mTargetCell, resultSpan, CellLayout.MODE_DRAG_OVER); 2883 2884 mLastReorderX = mTargetCell[0]; 2885 mLastReorderY = mTargetCell[1]; 2886 2887 if (mDragMode == DRAG_MODE_ADD_TO_FOLDER) { 2888 } 2889 mDragMode = DRAG_MODE_REORDER; 2890 2891 // TODO: need to determine what we're going to about visualizing drop locations 2892 /* 2893 boolean resize = resultSpan[0] != spanX || resultSpan[1] != spanY; 2894 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2895 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2896 mTargetCell[0], mTargetCell[1], resultSpan[0], resultSpan[1], resize, 2897 dragView.getDragVisualizeOffset(), dragView.getDragRegion()); 2898 */ 2899 } 2900 } 2901 2902 @Override 2903 public void getHitRect(Rect outRect) { 2904 // We want the workspace to have the whole area of the display (it will find the correct 2905 // cell layout to drop to in the existing drag/drop logic. 2906 outRect.set(0, 0, mDisplayWidth, mDisplayHeight); 2907 } 2908 2909 /** 2910 * Add the item specified by dragInfo to the given layout. 2911 * @return true if successful 2912 */ 2913 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2914 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2915 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2916 return true; 2917 } 2918 mLauncher.showOutOfSpaceMessage(); 2919 return false; 2920 } 2921 2922 private void onDropExternal(int[] touchXY, Object dragInfo, 2923 CellLayout cellLayout, boolean insertAtFirst) { 2924 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 2925 } 2926 2927 /** 2928 * Drop an item that didn't originate on one of the workspace screens. 2929 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2930 * come from another app altogether. 2931 * 2932 * NOTE: This can also be called when we are outside of a drag event, when we want 2933 * to add an item to one of the workspace screens. 2934 */ 2935 private void onDropExternal(final int[] touchXY, final Object dragInfo, 2936 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 2937 final Runnable exitSpringLoadedRunnable = new Runnable() { 2938 @Override 2939 public void run() { 2940 mLauncher.exitSpringLoadedDragModeDelayed(true, false, null); 2941 } 2942 }; 2943 2944 ItemInfo info = (ItemInfo) dragInfo; 2945 int spanX = info.spanX; 2946 int spanY = info.spanY; 2947 if (mDragInfo != null) { 2948 spanX = mDragInfo.spanX; 2949 spanY = mDragInfo.spanY; 2950 } 2951 2952 final long container = mLauncher.isHotseatLayout(cellLayout) ? 2953 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2954 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2955 final int screen = indexOfChild(cellLayout); 2956 if (!mLauncher.isHotseatLayout(cellLayout) && screen != mCurrentPage 2957 && mState != State.SPRING_LOADED) { 2958 snapToPage(screen); 2959 } 2960 2961 if (info instanceof PendingAddItemInfo) { 2962 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 2963 2964 boolean findNearestVacantCell = true; 2965 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 2966 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 2967 cellLayout, mTargetCell); 2968 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2969 mDragViewVisualCenter[1], mTargetCell); 2970 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, 2971 distance, true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 2972 mDragTargetLayout, mTargetCell, distance)) { 2973 findNearestVacantCell = false; 2974 } 2975 } 2976 2977 final ItemInfo item = (ItemInfo) d.dragInfo; 2978 if (findNearestVacantCell) { 2979 int minSpanX = item.spanX; 2980 int minSpanY = item.spanY; 2981 if (item.minSpanX > 0 && item.minSpanY > 0) { 2982 minSpanX = item.minSpanX; 2983 minSpanY = item.minSpanY; 2984 } 2985 int[] resultSpan = new int[2]; 2986 mTargetCell = mDragTargetLayout.createArea((int) mDragViewVisualCenter[0], 2987 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, info.spanX, info.spanY, 2988 null, mTargetCell, resultSpan, CellLayout.MODE_ON_DROP_EXTERNAL); 2989 item.spanX = resultSpan[0]; 2990 item.spanY = resultSpan[1]; 2991 } 2992 2993 Runnable onAnimationCompleteRunnable = new Runnable() { 2994 @Override 2995 public void run() { 2996 // When dragging and dropping from customization tray, we deal with creating 2997 // widgets/shortcuts/folders in a slightly different way 2998 switch (pendingInfo.itemType) { 2999 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 3000 int span[] = new int[2]; 3001 span[0] = item.spanX; 3002 span[1] = item.spanY; 3003 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, 3004 container, screen, mTargetCell, span, null); 3005 break; 3006 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3007 mLauncher.processShortcutFromDrop(pendingInfo.componentName, 3008 container, screen, mTargetCell, null); 3009 break; 3010 default: 3011 throw new IllegalStateException("Unknown item type: " + 3012 pendingInfo.itemType); 3013 } 3014 cellLayout.onDragExit(); 3015 } 3016 }; 3017 View finalView = pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET 3018 ? ((PendingAddWidgetInfo) pendingInfo).boundWidget : null; 3019 int animationStyle = ANIMATE_INTO_POSITION_AND_DISAPPEAR; 3020 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && 3021 ((PendingAddWidgetInfo) pendingInfo).info.configure != null) { 3022 animationStyle = ANIMATE_INTO_POSITION_AND_REMAIN; 3023 } 3024 animateWidgetDrop(info, cellLayout, d.dragView, onAnimationCompleteRunnable, 3025 animationStyle, finalView, true); 3026 } else { 3027 // This is for other drag/drop cases, like dragging from All Apps 3028 View view = null; 3029 3030 switch (info.itemType) { 3031 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 3032 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3033 if (info.container == NO_ID && info instanceof ApplicationInfo) { 3034 // Came from all apps -- make a copy 3035 info = new ShortcutInfo((ApplicationInfo) info); 3036 } 3037 view = mLauncher.createShortcut(R.layout.application, cellLayout, 3038 (ShortcutInfo) info); 3039 break; 3040 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 3041 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 3042 (FolderInfo) info, mIconCache); 3043 break; 3044 default: 3045 throw new IllegalStateException("Unknown item type: " + info.itemType); 3046 } 3047 3048 // First we find the cell nearest to point at which the item is 3049 // dropped, without any consideration to whether there is an item there. 3050 if (touchXY != null) { 3051 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3052 cellLayout, mTargetCell); 3053 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3054 mDragViewVisualCenter[1], mTargetCell); 3055 d.postAnimationRunnable = exitSpringLoadedRunnable; 3056 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, distance, 3057 true, d.dragView, d.postAnimationRunnable)) { 3058 return; 3059 } 3060 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, distance, d, 3061 true)) { 3062 return; 3063 } 3064 } 3065 3066 if (touchXY != null) { 3067 // when dragging and dropping, just find the closest free spot 3068 mTargetCell = mDragTargetLayout.createArea((int) mDragViewVisualCenter[0], 3069 (int) mDragViewVisualCenter[1], 1, 1, 1, 1, 3070 null, mTargetCell, null, CellLayout.MODE_ON_DROP); 3071 } else { 3072 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3073 } 3074 addInScreen(view, container, screen, mTargetCell[0], mTargetCell[1], info.spanX, 3075 info.spanY, insertAtFirst); 3076 cellLayout.onDropChild(view); 3077 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 3078 cellLayout.getChildrenLayout().measureChild(view); 3079 3080 3081 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, 3082 lp.cellX, lp.cellY); 3083 3084 if (d.dragView != null) { 3085 // We wrap the animation call in the temporary set and reset of the current 3086 // cellLayout to its final transform -- this means we animate the drag view to 3087 // the correct final location. 3088 setFinalTransitionTransform(cellLayout); 3089 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 3090 exitSpringLoadedRunnable); 3091 resetTransitionTransform(cellLayout); 3092 } 3093 } 3094 } 3095 3096 public Bitmap createWidgetBitmap(ItemInfo widgetInfo, View layout) { 3097 int[] unScaledSize = mLauncher.getWorkspace().estimateItemSize(widgetInfo.spanX, 3098 widgetInfo.spanY, widgetInfo, false); 3099 int visibility = layout.getVisibility(); 3100 layout.setVisibility(VISIBLE); 3101 3102 int width = MeasureSpec.makeMeasureSpec(unScaledSize[0], MeasureSpec.EXACTLY); 3103 int height = MeasureSpec.makeMeasureSpec(unScaledSize[1], MeasureSpec.EXACTLY); 3104 Bitmap b = Bitmap.createBitmap(unScaledSize[0], unScaledSize[1], 3105 Bitmap.Config.ARGB_8888); 3106 Canvas c = new Canvas(b); 3107 3108 layout.measure(width, height); 3109 layout.layout(0, 0, unScaledSize[0], unScaledSize[1]); 3110 layout.draw(c); 3111 c.setBitmap(null); 3112 layout.setVisibility(visibility); 3113 return b; 3114 } 3115 3116 private void getFinalPositionForDropAnimation(int[] loc, float[] scaleXY, 3117 DragView dragView, CellLayout layout, ItemInfo info, int[] targetCell, View finalView, 3118 boolean external) { 3119 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 3120 // location and size on the home screen. 3121 int spanX = info.spanX; 3122 int spanY = info.spanY; 3123 3124 Rect r = estimateItemPosition(layout, info, targetCell[0], targetCell[1], spanX, spanY); 3125 loc[0] = r.left; 3126 loc[1] = r.top; 3127 3128 setFinalTransitionTransform(layout); 3129 float cellLayoutScale = 3130 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(layout, loc); 3131 resetTransitionTransform(layout); 3132 float dragViewScaleX = (1.0f * r.width()) / dragView.getMeasuredWidth(); 3133 float dragViewScaleY = (1.0f * r.height()) / dragView.getMeasuredHeight(); 3134 3135 // The animation will scale the dragView about its center, so we need to center about 3136 // the final location. 3137 loc[0] -= (dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 3138 loc[1] -= (dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 3139 3140 scaleXY[0] = dragViewScaleX * cellLayoutScale; 3141 scaleXY[1] = dragViewScaleY * cellLayoutScale; 3142 } 3143 3144 public void animateWidgetDrop(ItemInfo info, CellLayout cellLayout, DragView dragView, 3145 final Runnable onCompleteRunnable, int animationType, final View finalView, 3146 boolean external) { 3147 Rect from = new Rect(); 3148 mLauncher.getDragLayer().getViewRectRelativeToSelf(dragView, from); 3149 3150 int[] finalPos = new int[2]; 3151 float scaleXY[] = new float[2]; 3152 getFinalPositionForDropAnimation(finalPos, scaleXY, dragView, cellLayout, info, mTargetCell, 3153 finalView, external); 3154 3155 Resources res = mLauncher.getResources(); 3156 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration) - 200; 3157 3158 // In the case where we've prebound the widget, we remove it from the DragLayer 3159 if (finalView instanceof AppWidgetHostView && external) { 3160 mLauncher.getDragLayer().removeView(finalView); 3161 } 3162 if ((animationType == ANIMATE_INTO_POSITION_AND_RESIZE || external) && finalView != null) { 3163 Bitmap crossFadeBitmap = createWidgetBitmap(info, finalView); 3164 dragView.setCrossFadeBitmap(crossFadeBitmap); 3165 dragView.crossFade((int) (duration * 0.8f)); 3166 } else if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && external) { 3167 scaleXY[0] = scaleXY[1] = Math.min(scaleXY[0], scaleXY[1]); 3168 } 3169 3170 DragLayer dragLayer = mLauncher.getDragLayer(); 3171 if (animationType == CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION) { 3172 mLauncher.getDragLayer().animateViewIntoPosition(dragView, finalPos, 0f, 0.1f, 0.1f, 3173 DragLayer.ANIMATION_END_DISAPPEAR, onCompleteRunnable, duration); 3174 } else { 3175 int endStyle; 3176 if (animationType == ANIMATE_INTO_POSITION_AND_REMAIN) { 3177 endStyle = DragLayer.ANIMATION_END_REMAIN_VISIBLE; 3178 } else { 3179 endStyle = DragLayer.ANIMATION_END_DISAPPEAR;; 3180 } 3181 3182 Runnable onComplete = new Runnable() { 3183 @Override 3184 public void run() { 3185 if (finalView != null) { 3186 finalView.setVisibility(VISIBLE); 3187 } 3188 if (onCompleteRunnable != null) { 3189 onCompleteRunnable.run(); 3190 } 3191 } 3192 }; 3193 dragLayer.animateViewIntoPosition(dragView, from.left, from.top, finalPos[0], 3194 finalPos[1], 1, 1, 1, scaleXY[0], scaleXY[1], onComplete, endStyle, 3195 duration, this); 3196 } 3197 } 3198 3199 public void setFinalTransitionTransform(CellLayout layout) { 3200 if (isSwitchingState()) { 3201 int index = indexOfChild(layout); 3202 mCurrentScaleX = layout.getScaleX(); 3203 mCurrentScaleY = layout.getScaleY(); 3204 mCurrentTranslationX = layout.getTranslationX(); 3205 mCurrentTranslationY = layout.getTranslationY(); 3206 mCurrentRotationY = layout.getRotationY(); 3207 layout.setScaleX(mNewScaleXs[index]); 3208 layout.setScaleY(mNewScaleYs[index]); 3209 layout.setTranslationX(mNewTranslationXs[index]); 3210 layout.setTranslationY(mNewTranslationYs[index]); 3211 layout.setRotationY(mNewRotationYs[index]); 3212 } 3213 } 3214 public void resetTransitionTransform(CellLayout layout) { 3215 if (isSwitchingState()) { 3216 mCurrentScaleX = layout.getScaleX(); 3217 mCurrentScaleY = layout.getScaleY(); 3218 mCurrentTranslationX = layout.getTranslationX(); 3219 mCurrentTranslationY = layout.getTranslationY(); 3220 mCurrentRotationY = layout.getRotationY(); 3221 layout.setScaleX(mCurrentScaleX); 3222 layout.setScaleY(mCurrentScaleY); 3223 layout.setTranslationX(mCurrentTranslationX); 3224 layout.setTranslationY(mCurrentTranslationY); 3225 layout.setRotationY(mCurrentRotationY); 3226 } 3227 } 3228 3229 /** 3230 * Return the current {@link CellLayout}, correctly picking the destination 3231 * screen while a scroll is in progress. 3232 */ 3233 public CellLayout getCurrentDropLayout() { 3234 return (CellLayout) getChildAt(mNextPage == INVALID_PAGE ? mCurrentPage : mNextPage); 3235 } 3236 3237 /** 3238 * Return the current CellInfo describing our current drag; this method exists 3239 * so that Launcher can sync this object with the correct info when the activity is created/ 3240 * destroyed 3241 * 3242 */ 3243 public CellLayout.CellInfo getDragInfo() { 3244 return mDragInfo; 3245 } 3246 3247 /** 3248 * Calculate the nearest cell where the given object would be dropped. 3249 * 3250 * pixelX and pixelY should be in the coordinate system of layout 3251 */ 3252 private int[] findNearestArea(int pixelX, int pixelY, 3253 int spanX, int spanY, CellLayout layout, int[] recycle) { 3254 return layout.findNearestArea( 3255 pixelX, pixelY, spanX, spanY, recycle); 3256 } 3257 3258 void setup(DragController dragController) { 3259 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3260 mDragController = dragController; 3261 3262 // hardware layers on children are enabled on startup, but should be disabled until 3263 // needed 3264 updateChildrenLayersEnabled(); 3265 setWallpaperDimension(); 3266 } 3267 3268 /** 3269 * Called at the end of a drag which originated on the workspace. 3270 */ 3271 public void onDropCompleted(View target, DragObject d, boolean success) { 3272 if (success) { 3273 if (target != this) { 3274 if (mDragInfo != null) { 3275 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 3276 if (mDragInfo.cell instanceof DropTarget) { 3277 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 3278 } 3279 } 3280 } 3281 } else if (mDragInfo != null) { 3282 // NOTE: When 'success' is true, onDragExit is called by the DragController before 3283 // calling onDropCompleted(). We call it ourselves here, but maybe this should be 3284 // moved into DragController.cancelDrag(). 3285 doDragExit(null); 3286 CellLayout cellLayout; 3287 if (mLauncher.isHotseatLayout(target)) { 3288 cellLayout = mLauncher.getHotseat().getLayout(); 3289 } else { 3290 cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3291 } 3292 cellLayout.onDropChild(mDragInfo.cell); 3293 } 3294 if (d.cancelled && mDragInfo.cell != null) { 3295 mDragInfo.cell.setVisibility(VISIBLE); 3296 } 3297 mDragOutline = null; 3298 mDragInfo = null; 3299 3300 saveWorkspaceStateToDb(); 3301 // Hide the scrolling indicator after you pick up an item 3302 hideScrollingIndicator(false); 3303 } 3304 3305 public void saveWorkspaceStateToDb() { 3306 int count = getChildCount(); 3307 for (int i = 0; i < count; i++) { 3308 CellLayout cl = (CellLayout) getChildAt(i); 3309 if (cl.isItemPlacementDirty()) { 3310 updateItemLocationsInDatabase(cl); 3311 cl.setItemPlacementDirty(false); 3312 } 3313 } 3314 } 3315 3316 private void updateItemLocationsInDatabase(CellLayout cl) { 3317 int count = cl.getChildrenLayout().getChildCount(); 3318 int screen = indexOfChild(cl); 3319 for (int i = 0; i < count; i++) { 3320 View v = cl.getChildrenLayout().getChildAt(i); 3321 ItemInfo info = (ItemInfo) v.getTag(); 3322 3323 LauncherModel.moveItemInDatabase(mLauncher, info, Favorites.CONTAINER_DESKTOP, screen, 3324 info.cellX, info.cellY); 3325 } 3326 } 3327 3328 public boolean isDropEnabled() { 3329 return true; 3330 } 3331 3332 @Override 3333 protected void onRestoreInstanceState(Parcelable state) { 3334 super.onRestoreInstanceState(state); 3335 Launcher.setScreen(mCurrentPage); 3336 } 3337 3338 @Override 3339 public void scrollLeft() { 3340 if (!isSmall() && !mIsSwitchingState) { 3341 super.scrollLeft(); 3342 } 3343 Folder openFolder = getOpenFolder(); 3344 if (openFolder != null) { 3345 openFolder.completeDragExit(); 3346 } 3347 } 3348 3349 @Override 3350 public void scrollRight() { 3351 if (!isSmall() && !mIsSwitchingState) { 3352 super.scrollRight(); 3353 } 3354 Folder openFolder = getOpenFolder(); 3355 if (openFolder != null) { 3356 openFolder.completeDragExit(); 3357 } 3358 } 3359 3360 @Override 3361 public boolean onEnterScrollArea(int x, int y, int direction) { 3362 // Ignore the scroll area if we are dragging over the hot seat 3363 if (mLauncher.getHotseat() != null) { 3364 Rect r = new Rect(); 3365 mLauncher.getHotseat().getHitRect(r); 3366 if (r.contains(x, y)) { 3367 return false; 3368 } 3369 } 3370 3371 boolean result = false; 3372 if (!isSmall() && !mIsSwitchingState) { 3373 mInScrollArea = true; 3374 3375 final int page = (mNextPage != INVALID_PAGE ? mNextPage : mCurrentPage) + 3376 (direction == DragController.SCROLL_LEFT ? -1 : 1); 3377 cancelFolderCreation(); 3378 3379 if (0 <= page && page < getChildCount()) { 3380 CellLayout layout = (CellLayout) getChildAt(page); 3381 // Exit the current layout and mark the overlapping layout 3382 if (mDragTargetLayout != null) { 3383 mDragTargetLayout.setIsDragOverlapping(false); 3384 mDragTargetLayout.onDragExit(); 3385 } 3386 mDragTargetLayout = layout; 3387 mDragTargetLayout.setIsDragOverlapping(true); 3388 3389 // Workspace is responsible for drawing the edge glow on adjacent pages, 3390 // so we need to redraw the workspace when this may have changed. 3391 invalidate(); 3392 result = true; 3393 } 3394 } 3395 return result; 3396 } 3397 3398 @Override 3399 public boolean onExitScrollArea() { 3400 boolean result = false; 3401 if (mInScrollArea) { 3402 if (mDragTargetLayout != null) { 3403 mDragTargetLayout.setIsDragOverlapping(false); 3404 // Workspace is responsible for drawing the edge glow on adjacent pages, 3405 // so we need to redraw the workspace when this may have changed. 3406 invalidate(); 3407 } 3408 if (mDragTargetLayout != null && mDragHasEnteredWorkspace) { 3409 // Unmark the overlapping layout and re-enter the current layout 3410 mDragTargetLayout = getCurrentDropLayout(); 3411 mDragTargetLayout.onDragEnter(); 3412 } 3413 result = true; 3414 mInScrollArea = false; 3415 } 3416 return result; 3417 } 3418 3419 private void onResetScrollArea() { 3420 if (mDragTargetLayout != null) { 3421 // Unmark the overlapping layout 3422 mDragTargetLayout.setIsDragOverlapping(false); 3423 3424 // Workspace is responsible for drawing the edge glow on adjacent pages, 3425 // so we need to redraw the workspace when this may have changed. 3426 invalidate(); 3427 } 3428 mInScrollArea = false; 3429 } 3430 3431 /** 3432 * Returns a specific CellLayout 3433 */ 3434 CellLayout getParentCellLayoutForView(View v) { 3435 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3436 for (CellLayout layout : layouts) { 3437 if (layout.getChildrenLayout().indexOfChild(v) > -1) { 3438 return layout; 3439 } 3440 } 3441 return null; 3442 } 3443 3444 /** 3445 * Returns a list of all the CellLayouts in the workspace. 3446 */ 3447 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3448 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3449 int screenCount = getChildCount(); 3450 for (int screen = 0; screen < screenCount; screen++) { 3451 layouts.add(((CellLayout) getChildAt(screen))); 3452 } 3453 if (mLauncher.getHotseat() != null) { 3454 layouts.add(mLauncher.getHotseat().getLayout()); 3455 } 3456 return layouts; 3457 } 3458 3459 /** 3460 * We should only use this to search for specific children. Do not use this method to modify 3461 * CellLayoutChildren directly. 3462 */ 3463 ArrayList<CellLayoutChildren> getWorkspaceAndHotseatCellLayoutChildren() { 3464 ArrayList<CellLayoutChildren> childrenLayouts = new ArrayList<CellLayoutChildren>(); 3465 int screenCount = getChildCount(); 3466 for (int screen = 0; screen < screenCount; screen++) { 3467 childrenLayouts.add(((CellLayout) getChildAt(screen)).getChildrenLayout()); 3468 } 3469 if (mLauncher.getHotseat() != null) { 3470 childrenLayouts.add(mLauncher.getHotseat().getLayout().getChildrenLayout()); 3471 } 3472 return childrenLayouts; 3473 } 3474 3475 public Folder getFolderForTag(Object tag) { 3476 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3477 for (CellLayoutChildren layout: childrenLayouts) { 3478 int count = layout.getChildCount(); 3479 for (int i = 0; i < count; i++) { 3480 View child = layout.getChildAt(i); 3481 if (child instanceof Folder) { 3482 Folder f = (Folder) child; 3483 if (f.getInfo() == tag && f.getInfo().opened) { 3484 return f; 3485 } 3486 } 3487 } 3488 } 3489 return null; 3490 } 3491 3492 public View getViewForTag(Object tag) { 3493 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3494 for (CellLayoutChildren layout: childrenLayouts) { 3495 int count = layout.getChildCount(); 3496 for (int i = 0; i < count; i++) { 3497 View child = layout.getChildAt(i); 3498 if (child.getTag() == tag) { 3499 return child; 3500 } 3501 } 3502 } 3503 return null; 3504 } 3505 3506 void clearDropTargets() { 3507 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3508 for (CellLayoutChildren layout: childrenLayouts) { 3509 int childCount = layout.getChildCount(); 3510 for (int j = 0; j < childCount; j++) { 3511 View v = layout.getChildAt(j); 3512 if (v instanceof DropTarget) { 3513 mDragController.removeDropTarget((DropTarget) v); 3514 } 3515 } 3516 } 3517 } 3518 3519 void removeItems(final ArrayList<ApplicationInfo> apps) { 3520 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3521 3522 final HashSet<String> packageNames = new HashSet<String>(); 3523 final int appCount = apps.size(); 3524 for (int i = 0; i < appCount; i++) { 3525 packageNames.add(apps.get(i).componentName.getPackageName()); 3526 } 3527 3528 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3529 for (final CellLayout layoutParent: cellLayouts) { 3530 final ViewGroup layout = layoutParent.getChildrenLayout(); 3531 3532 // Avoid ANRs by treating each screen separately 3533 post(new Runnable() { 3534 public void run() { 3535 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3536 childrenToRemove.clear(); 3537 3538 int childCount = layout.getChildCount(); 3539 for (int j = 0; j < childCount; j++) { 3540 final View view = layout.getChildAt(j); 3541 Object tag = view.getTag(); 3542 3543 if (tag instanceof ShortcutInfo) { 3544 final ShortcutInfo info = (ShortcutInfo) tag; 3545 final Intent intent = info.intent; 3546 final ComponentName name = intent.getComponent(); 3547 3548 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3549 for (String packageName: packageNames) { 3550 if (packageName.equals(name.getPackageName())) { 3551 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3552 childrenToRemove.add(view); 3553 } 3554 } 3555 } 3556 } else if (tag instanceof FolderInfo) { 3557 final FolderInfo info = (FolderInfo) tag; 3558 final ArrayList<ShortcutInfo> contents = info.contents; 3559 final int contentsCount = contents.size(); 3560 final ArrayList<ShortcutInfo> appsToRemoveFromFolder = 3561 new ArrayList<ShortcutInfo>(); 3562 3563 for (int k = 0; k < contentsCount; k++) { 3564 final ShortcutInfo appInfo = contents.get(k); 3565 final Intent intent = appInfo.intent; 3566 final ComponentName name = intent.getComponent(); 3567 3568 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3569 for (String packageName: packageNames) { 3570 if (packageName.equals(name.getPackageName())) { 3571 appsToRemoveFromFolder.add(appInfo); 3572 } 3573 } 3574 } 3575 } 3576 for (ShortcutInfo item: appsToRemoveFromFolder) { 3577 info.remove(item); 3578 LauncherModel.deleteItemFromDatabase(mLauncher, item); 3579 } 3580 } else if (tag instanceof LauncherAppWidgetInfo) { 3581 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3582 final AppWidgetProviderInfo provider = 3583 widgets.getAppWidgetInfo(info.appWidgetId); 3584 if (provider != null) { 3585 for (String packageName: packageNames) { 3586 if (packageName.equals(provider.provider.getPackageName())) { 3587 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3588 childrenToRemove.add(view); 3589 } 3590 } 3591 } 3592 } 3593 } 3594 3595 childCount = childrenToRemove.size(); 3596 for (int j = 0; j < childCount; j++) { 3597 View child = childrenToRemove.get(j); 3598 // Note: We can not remove the view directly from CellLayoutChildren as this 3599 // does not re-mark the spaces as unoccupied. 3600 layoutParent.removeViewInLayout(child); 3601 if (child instanceof DropTarget) { 3602 mDragController.removeDropTarget((DropTarget)child); 3603 } 3604 } 3605 3606 if (childCount > 0) { 3607 layout.requestLayout(); 3608 layout.invalidate(); 3609 } 3610 } 3611 }); 3612 } 3613 } 3614 3615 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3616 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3617 for (CellLayoutChildren layout: childrenLayouts) { 3618 int childCount = layout.getChildCount(); 3619 for (int j = 0; j < childCount; j++) { 3620 final View view = layout.getChildAt(j); 3621 Object tag = view.getTag(); 3622 if (tag instanceof ShortcutInfo) { 3623 ShortcutInfo info = (ShortcutInfo) tag; 3624 // We need to check for ACTION_MAIN otherwise getComponent() might 3625 // return null for some shortcuts (for instance, for shortcuts to 3626 // web pages.) 3627 final Intent intent = info.intent; 3628 final ComponentName name = intent.getComponent(); 3629 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3630 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3631 final int appCount = apps.size(); 3632 for (int k = 0; k < appCount; k++) { 3633 ApplicationInfo app = apps.get(k); 3634 if (app.componentName.equals(name)) { 3635 BubbleTextView shortcut = (BubbleTextView) view; 3636 info.updateIcon(mIconCache); 3637 info.title = app.title.toString(); 3638 shortcut.applyFromShortcutInfo(info, mIconCache); 3639 } 3640 } 3641 } 3642 } 3643 } 3644 } 3645 } 3646 3647 void moveToDefaultScreen(boolean animate) { 3648 if (!isSmall()) { 3649 if (animate) { 3650 snapToPage(mDefaultPage); 3651 } else { 3652 setCurrentPage(mDefaultPage); 3653 } 3654 } 3655 getChildAt(mDefaultPage).requestFocus(); 3656 } 3657 3658 @Override 3659 public void syncPages() { 3660 } 3661 3662 @Override 3663 public void syncPageItems(int page, boolean immediate) { 3664 } 3665 3666 @Override 3667 protected String getCurrentPageDescription() { 3668 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 3669 return String.format(mContext.getString(R.string.workspace_scroll_format), 3670 page + 1, getChildCount()); 3671 } 3672 3673 public void getLocationInDragLayer(int[] loc) { 3674 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 3675 } 3676 3677 void setFadeForOverScroll(float fade) { 3678 if (!isScrollingIndicatorEnabled()) return; 3679 3680 mOverscrollFade = fade; 3681 float reducedFade = 0.5f + 0.5f * (1 - fade); 3682 final ViewGroup parent = (ViewGroup) getParent(); 3683 final ImageView qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3684 final ImageView dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3685 final View scrollIndicator = getScrollingIndicator(); 3686 3687 cancelScrollingIndicatorAnimations(); 3688 if (qsbDivider != null) qsbDivider.setAlpha(reducedFade); 3689 if (dockDivider != null) dockDivider.setAlpha(reducedFade); 3690 scrollIndicator.setAlpha(1 - fade); 3691 } 3692} 3693