Workspace.java revision 84f2ce77a6aafa30ff1f8d27edece01c8a89d436
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.ComponentName; 30import android.content.Context; 31import android.content.Intent; 32import android.content.res.Resources; 33import android.content.res.TypedArray; 34import android.graphics.Bitmap; 35import android.graphics.Camera; 36import android.graphics.Canvas; 37import android.graphics.Matrix; 38import android.graphics.Paint; 39import android.graphics.Point; 40import android.graphics.PointF; 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.view.Display; 50import android.view.MotionEvent; 51import android.view.View; 52import android.view.ViewGroup; 53import android.view.animation.DecelerateInterpolator; 54import android.widget.ImageView; 55import android.widget.TextView; 56 57import com.android.launcher.R; 58import com.android.launcher2.FolderIcon.FolderRingAnimator; 59import com.android.launcher2.LauncherSettings.Favorites; 60 61import java.util.ArrayList; 62import java.util.HashSet; 63 64/** 65 * The workspace is a wide area with a wallpaper and a finite number of pages. 66 * Each page contains a number of icons, folders or widgets the user can 67 * interact with. A workspace is meant to be used with a fixed width only. 68 */ 69public class Workspace extends SmoothPagedView 70 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 71 DragController.DragListener, LauncherTransitionable { 72 private static final String TAG = "Launcher.Workspace"; 73 74 // Y rotation to apply to the workspace screens 75 private static final float WORKSPACE_ROTATION = 12.5f; 76 private static final float WORKSPACE_OVERSCROLL_ROTATION = 24f; 77 private static float CAMERA_DISTANCE = 6500; 78 79 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 80 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 81 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 82 83 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 84 private static final int ADJACENT_SCREEN_DROP_DURATION = 300; 85 private static final int FLING_THRESHOLD_VELOCITY = 500; 86 87 private float mMaxDistanceForFolderCreation; 88 89 // These animators are used to fade the children's outlines 90 private ObjectAnimator mChildrenOutlineFadeInAnimation; 91 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 92 private float mChildrenOutlineAlpha = 0; 93 94 // These properties refer to the background protection gradient used for AllApps and Customize 95 private ValueAnimator mBackgroundFadeInAnimation; 96 private ValueAnimator mBackgroundFadeOutAnimation; 97 private Drawable mBackground; 98 boolean mDrawBackground = true; 99 private float mBackgroundAlpha = 0; 100 private float mOverScrollMaxBackgroundAlpha = 0.0f; 101 private int mOverScrollPageIndex = -1; 102 103 private float mWallpaperScrollRatio = 1.0f; 104 105 private final WallpaperManager mWallpaperManager; 106 private IBinder mWindowToken; 107 private static final float WALLPAPER_SCREENS_SPAN = 2f; 108 109 private int mDefaultPage; 110 111 /** 112 * CellInfo for the cell that is currently being dragged 113 */ 114 private CellLayout.CellInfo mDragInfo; 115 116 /** 117 * Target drop area calculated during last acceptDrop call. 118 */ 119 private int[] mTargetCell = new int[2]; 120 private int mDragOverX = -1; 121 private int mDragOverY = -1; 122 123 /** 124 * The CellLayout that is currently being dragged over 125 */ 126 private CellLayout mDragTargetLayout = null; 127 /** 128 * The CellLayout that we will show as glowing 129 */ 130 private CellLayout mDragOverlappingLayout = null; 131 132 /** 133 * The CellLayout which will be dropped to 134 */ 135 private CellLayout mDropToLayout = null; 136 137 private Launcher mLauncher; 138 private IconCache mIconCache; 139 private DragController mDragController; 140 141 // These are temporary variables to prevent having to allocate a new object just to 142 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 143 private int[] mTempCell = new int[2]; 144 private int[] mTempEstimate = new int[2]; 145 private float[] mDragViewVisualCenter = new float[2]; 146 private float[] mTempDragCoordinates = new float[2]; 147 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 148 private float[] mTempDragBottomRightCoordinates = new float[2]; 149 private Matrix mTempInverseMatrix = new Matrix(); 150 151 private SpringLoadedDragController mSpringLoadedDragController; 152 private float mSpringLoadedShrinkFactor; 153 154 private static final int DEFAULT_CELL_COUNT_X = 4; 155 private static final int DEFAULT_CELL_COUNT_Y = 4; 156 157 // State variable that indicates whether the pages are small (ie when you're 158 // in all apps or customize mode) 159 160 enum State { NORMAL, SPRING_LOADED, SMALL }; 161 private State mState = State.NORMAL; 162 private boolean mIsSwitchingState = false; 163 164 boolean mAnimatingViewIntoPlace = false; 165 boolean mIsDragOccuring = false; 166 boolean mChildrenLayersEnabled = true; 167 168 /** Is the user is dragging an item near the edge of a page? */ 169 private boolean mInScrollArea = false; 170 171 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 172 private Bitmap mDragOutline = null; 173 private final Rect mTempRect = new Rect(); 174 private final int[] mTempXY = new int[2]; 175 private float mOverscrollFade = 0; 176 private boolean mOverscrollTransformsSet; 177 public static final int DRAG_BITMAP_PADDING = 0; 178 179 // Camera and Matrix used to determine the final position of a neighboring CellLayout 180 private final Matrix mMatrix = new Matrix(); 181 private final Camera mCamera = new Camera(); 182 private final float mTempFloat2[] = new float[2]; 183 184 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 185 int mWallpaperWidth; 186 int mWallpaperHeight; 187 WallpaperOffsetInterpolator mWallpaperOffset; 188 boolean mUpdateWallpaperOffsetImmediately = false; 189 private Runnable mDelayedResizeRunnable; 190 private Runnable mDelayedSnapToPageRunnable; 191 private Point mDisplaySize = new Point(); 192 private boolean mIsStaticWallpaper; 193 private int mWallpaperTravelWidth; 194 195 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 196 private static final int FOLDER_CREATION_TIMEOUT = 0; 197 private static final int REORDER_TIMEOUT = 250; 198 private final Alarm mFolderCreationAlarm = new Alarm(); 199 private final Alarm mReorderAlarm = new Alarm(); 200 private FolderRingAnimator mDragFolderRingAnimator = null; 201 private FolderIcon mDragOverFolderIcon = null; 202 private boolean mCreateUserFolderOnDrop = false; 203 private boolean mAddToExistingFolderOnDrop = false; 204 private DropTarget.DragEnforcer mDragEnforcer; 205 206 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 207 private float mXDown; 208 private float mYDown; 209 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 210 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 211 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 212 213 // Relating to the animation of items being dropped externally 214 public static final int ANIMATE_INTO_POSITION_AND_DISAPPEAR = 0; 215 public static final int ANIMATE_INTO_POSITION_AND_REMAIN = 1; 216 public static final int ANIMATE_INTO_POSITION_AND_RESIZE = 2; 217 public static final int COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION = 3; 218 public static final int CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION = 4; 219 220 // Related to dragging, folder creation and reordering 221 private static final int DRAG_MODE_NONE = 0; 222 private static final int DRAG_MODE_CREATE_FOLDER = 1; 223 private static final int DRAG_MODE_ADD_TO_FOLDER = 2; 224 private static final int DRAG_MODE_REORDER = 3; 225 private int mDragMode = DRAG_MODE_NONE; 226 private int mLastReorderX = -1; 227 private int mLastReorderY = -1; 228 229 // These variables are used for storing the initial and final values during workspace animations 230 private int mSavedScrollX; 231 private float mSavedRotationY; 232 private float mSavedTranslationX; 233 private float mCurrentScaleX; 234 private float mCurrentScaleY; 235 private float mCurrentRotationY; 236 private float mCurrentTranslationX; 237 private float mCurrentTranslationY; 238 private float[] mOldTranslationXs; 239 private float[] mOldTranslationYs; 240 private float[] mOldScaleXs; 241 private float[] mOldScaleYs; 242 private float[] mOldBackgroundAlphas; 243 private float[] mOldBackgroundAlphaMultipliers; 244 private float[] mOldAlphas; 245 private float[] mOldRotationYs; 246 private float[] mNewTranslationXs; 247 private float[] mNewTranslationYs; 248 private float[] mNewScaleXs; 249 private float[] mNewScaleYs; 250 private float[] mNewBackgroundAlphas; 251 private float[] mNewBackgroundAlphaMultipliers; 252 private float[] mNewAlphas; 253 private float[] mNewRotationYs; 254 private float mTransitionProgress; 255 256 /** 257 * Used to inflate the Workspace from XML. 258 * 259 * @param context The application's context. 260 * @param attrs The attributes set containing the Workspace's customization values. 261 */ 262 public Workspace(Context context, AttributeSet attrs) { 263 this(context, attrs, 0); 264 } 265 266 /** 267 * Used to inflate the Workspace from XML. 268 * 269 * @param context The application's context. 270 * @param attrs The attributes set containing the Workspace's customization values. 271 * @param defStyle Unused. 272 */ 273 public Workspace(Context context, AttributeSet attrs, int defStyle) { 274 super(context, attrs, defStyle); 275 mContentIsRefreshable = false; 276 277 mDragEnforcer = new DropTarget.DragEnforcer(context); 278 // With workspace, data is available straight from the get-go 279 setDataIsReady(); 280 281 final Resources res = getResources(); 282 mFadeInAdjacentScreens = res.getBoolean(R.bool.config_workspaceFadeAdjacentScreens); 283 mWallpaperManager = WallpaperManager.getInstance(context); 284 285 int cellCountX = DEFAULT_CELL_COUNT_X; 286 int cellCountY = DEFAULT_CELL_COUNT_Y; 287 288 TypedArray a = context.obtainStyledAttributes(attrs, 289 R.styleable.Workspace, defStyle, 0); 290 291 if (LauncherApplication.isScreenLarge()) { 292 // Determine number of rows/columns dynamically 293 // TODO: This code currently fails on tablets with an aspect ratio < 1.3. 294 // Around that ratio we should make cells the same size in portrait and 295 // landscape 296 TypedArray actionBarSizeTypedArray = 297 context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize }); 298 DisplayMetrics displayMetrics = res.getDisplayMetrics(); 299 final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); 300 final float systemBarHeight = res.getDimension(R.dimen.status_bar_height); 301 final float smallestScreenDim = res.getConfiguration().smallestScreenWidthDp * 302 displayMetrics.density; 303 304 cellCountX = 1; 305 while (CellLayout.widthInPortrait(res, cellCountX + 1) <= smallestScreenDim) { 306 cellCountX++; 307 } 308 309 cellCountY = 1; 310 while (actionBarHeight + CellLayout.heightInLandscape(res, cellCountY + 1) 311 <= smallestScreenDim - systemBarHeight) { 312 cellCountY++; 313 } 314 } 315 316 mSpringLoadedShrinkFactor = 317 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 318 319 // if the value is manually specified, use that instead 320 cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX); 321 cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY); 322 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 323 a.recycle(); 324 325 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 326 setHapticFeedbackEnabled(false); 327 328 mLauncher = (Launcher) context; 329 initWorkspace(); 330 331 // Disable multitouch across the workspace/all apps/customize tray 332 setMotionEventSplittingEnabled(true); 333 } 334 335 // estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each 336 // dimension if unsuccessful 337 public int[] estimateItemSize(int hSpan, int vSpan, 338 ItemInfo itemInfo, boolean springLoaded) { 339 int[] size = new int[2]; 340 if (getChildCount() > 0) { 341 CellLayout cl = (CellLayout) mLauncher.getWorkspace().getChildAt(0); 342 Rect r = estimateItemPosition(cl, itemInfo, 0, 0, hSpan, vSpan); 343 size[0] = r.width(); 344 size[1] = r.height(); 345 if (springLoaded) { 346 size[0] *= mSpringLoadedShrinkFactor; 347 size[1] *= mSpringLoadedShrinkFactor; 348 } 349 return size; 350 } else { 351 size[0] = Integer.MAX_VALUE; 352 size[1] = Integer.MAX_VALUE; 353 return size; 354 } 355 } 356 public Rect estimateItemPosition(CellLayout cl, ItemInfo pendingInfo, 357 int hCell, int vCell, int hSpan, int vSpan) { 358 Rect r = new Rect(); 359 cl.cellToRect(hCell, vCell, hSpan, vSpan, r); 360 return r; 361 } 362 363 public void buildPageHardwareLayers() { 364 if (getWindowToken() != null) { 365 final int childCount = getChildCount(); 366 for (int i = 0; i < childCount; i++) { 367 CellLayout cl = (CellLayout) getChildAt(i); 368 cl.getShortcutsAndWidgets().buildLayer(); 369 } 370 } 371 } 372 373 public void onDragStart(DragSource source, Object info, int dragAction) { 374 mIsDragOccuring = true; 375 updateChildrenLayersEnabled(); 376 mLauncher.lockScreenOrientationOnLargeUI(); 377 } 378 379 public void onDragEnd() { 380 mIsDragOccuring = false; 381 updateChildrenLayersEnabled(); 382 mLauncher.unlockScreenOrientationOnLargeUI(); 383 } 384 385 /** 386 * Initializes various states for this workspace. 387 */ 388 protected void initWorkspace() { 389 Context context = getContext(); 390 mCurrentPage = mDefaultPage; 391 Launcher.setScreen(mCurrentPage); 392 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 393 mIconCache = app.getIconCache(); 394 setWillNotDraw(false); 395 setChildrenDrawnWithCacheEnabled(true); 396 397 final Resources res = getResources(); 398 try { 399 mBackground = res.getDrawable(R.drawable.apps_customize_bg); 400 } catch (Resources.NotFoundException e) { 401 // In this case, we will skip drawing background protection 402 } 403 404 mWallpaperOffset = new WallpaperOffsetInterpolator(); 405 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 406 display.getSize(mDisplaySize); 407 mWallpaperTravelWidth = (int) (mDisplaySize.x * 408 wallpaperTravelToScreenWidthRatio(mDisplaySize.x, mDisplaySize.y)); 409 410 mMaxDistanceForFolderCreation = (0.6f * res.getDimensionPixelSize(R.dimen.app_icon_size)); 411 mFlingThresholdVelocity = (int) (FLING_THRESHOLD_VELOCITY * mDensity); 412 } 413 414 @Override 415 protected int getScrollMode() { 416 return SmoothPagedView.X_LARGE_MODE; 417 } 418 419 @Override 420 protected void onViewAdded(View child) { 421 super.onViewAdded(child); 422 if (!(child instanceof CellLayout)) { 423 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 424 } 425 CellLayout cl = ((CellLayout) child); 426 cl.setOnInterceptTouchListener(this); 427 cl.setClickable(true); 428 cl.enableHardwareLayers(); 429 } 430 431 /** 432 * @return The open folder on the current screen, or null if there is none 433 */ 434 Folder getOpenFolder() { 435 DragLayer dragLayer = mLauncher.getDragLayer(); 436 int count = dragLayer.getChildCount(); 437 for (int i = 0; i < count; i++) { 438 View child = dragLayer.getChildAt(i); 439 if (child instanceof Folder) { 440 Folder folder = (Folder) child; 441 if (folder.getInfo().opened) 442 return folder; 443 } 444 } 445 return null; 446 } 447 448 boolean isTouchActive() { 449 return mTouchState != TOUCH_STATE_REST; 450 } 451 452 /** 453 * Adds the specified child in the specified screen. The position and dimension of 454 * the child are defined by x, y, spanX and spanY. 455 * 456 * @param child The child to add in one of the workspace's screens. 457 * @param screen The screen in which to add the child. 458 * @param x The X position of the child in the screen's grid. 459 * @param y The Y position of the child in the screen's grid. 460 * @param spanX The number of cells spanned horizontally by the child. 461 * @param spanY The number of cells spanned vertically by the child. 462 */ 463 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY) { 464 addInScreen(child, container, screen, x, y, spanX, spanY, false); 465 } 466 467 /** 468 * Adds the specified child in the specified screen. The position and dimension of 469 * the child are defined by x, y, spanX and spanY. 470 * 471 * @param child The child to add in one of the workspace's screens. 472 * @param screen The screen in which to add the child. 473 * @param x The X position of the child in the screen's grid. 474 * @param y The Y position of the child in the screen's grid. 475 * @param spanX The number of cells spanned horizontally by the child. 476 * @param spanY The number of cells spanned vertically by the child. 477 * @param insert When true, the child is inserted at the beginning of the children list. 478 */ 479 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY, 480 boolean insert) { 481 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 482 if (screen < 0 || screen >= getChildCount()) { 483 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 484 + " (was " + screen + "); skipping child"); 485 return; 486 } 487 } 488 489 final CellLayout layout; 490 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 491 layout = mLauncher.getHotseat().getLayout(); 492 child.setOnKeyListener(null); 493 494 // Hide folder title in the hotseat 495 if (child instanceof FolderIcon) { 496 ((FolderIcon) child).setTextVisible(false); 497 } 498 499 if (screen < 0) { 500 screen = mLauncher.getHotseat().getOrderInHotseat(x, y); 501 } else { 502 // Note: We do this to ensure that the hotseat is always laid out in the orientation 503 // of the hotseat in order regardless of which orientation they were added 504 x = mLauncher.getHotseat().getCellXFromOrder(screen); 505 y = mLauncher.getHotseat().getCellYFromOrder(screen); 506 } 507 } else { 508 // Show folder title if not in the hotseat 509 if (child instanceof FolderIcon) { 510 ((FolderIcon) child).setTextVisible(true); 511 } 512 513 layout = (CellLayout) getChildAt(screen); 514 child.setOnKeyListener(new IconKeyEventListener()); 515 } 516 517 LayoutParams genericLp = child.getLayoutParams(); 518 CellLayout.LayoutParams lp; 519 if (genericLp == null || !(genericLp instanceof CellLayout.LayoutParams)) { 520 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 521 } else { 522 lp = (CellLayout.LayoutParams) genericLp; 523 lp.cellX = x; 524 lp.cellY = y; 525 lp.cellHSpan = spanX; 526 lp.cellVSpan = spanY; 527 } 528 529 if (spanX < 0 && spanY < 0) { 530 lp.isLockedToGrid = false; 531 } 532 533 // Get the canonical child id to uniquely represent this view in this screen 534 int childId = LauncherModel.getCellLayoutChildId(container, screen, x, y, spanX, spanY); 535 boolean markCellsAsOccupied = !(child instanceof Folder); 536 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 537 // TODO: This branch occurs when the workspace is adding views 538 // outside of the defined grid 539 // maybe we should be deleting these items from the LauncherModel? 540 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 541 } 542 543 if (!(child instanceof Folder)) { 544 child.setHapticFeedbackEnabled(false); 545 child.setOnLongClickListener(mLongClickListener); 546 } 547 if (child instanceof DropTarget) { 548 mDragController.addDropTarget((DropTarget) child); 549 } 550 } 551 552 /** 553 * Check if the point (x, y) hits a given page. 554 */ 555 private boolean hitsPage(int index, float x, float y) { 556 final View page = getChildAt(index); 557 if (page != null) { 558 float[] localXY = { x, y }; 559 mapPointFromSelfToChild(page, localXY); 560 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 561 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 562 } 563 return false; 564 } 565 566 @Override 567 protected boolean hitsPreviousPage(float x, float y) { 568 // mNextPage is set to INVALID_PAGE whenever we are stationary. 569 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 570 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 571 572 // Only allow tap to next page on large devices, where there's significant margin outside 573 // the active workspace 574 return LauncherApplication.isScreenLarge() && hitsPage(current - 1, x, y); 575 } 576 577 @Override 578 protected boolean hitsNextPage(float x, float y) { 579 // mNextPage is set to INVALID_PAGE whenever we are stationary. 580 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 581 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 582 583 // Only allow tap to next page on large devices, where there's significant margin outside 584 // the active workspace 585 return LauncherApplication.isScreenLarge() && hitsPage(current + 1, x, y); 586 } 587 588 /** 589 * Called directly from a CellLayout (not by the framework), after we've been added as a 590 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 591 * that it should intercept touch events, which is not something that is normally supported. 592 */ 593 @Override 594 public boolean onTouch(View v, MotionEvent event) { 595 return (isSmall() || !isFinishedSwitchingState()); 596 } 597 598 public boolean isSwitchingState() { 599 return mIsSwitchingState; 600 } 601 602 /** This differs from isSwitchingState in that we take into account how far the transition 603 * has completed. */ 604 public boolean isFinishedSwitchingState() { 605 return !mIsSwitchingState || (mTransitionProgress > 0.5f); 606 } 607 608 protected void onWindowVisibilityChanged (int visibility) { 609 mLauncher.onWindowVisibilityChanged(visibility); 610 } 611 612 @Override 613 public boolean dispatchUnhandledMove(View focused, int direction) { 614 if (isSmall() || !isFinishedSwitchingState()) { 615 // when the home screens are shrunken, shouldn't allow side-scrolling 616 return false; 617 } 618 return super.dispatchUnhandledMove(focused, direction); 619 } 620 621 @Override 622 public boolean onInterceptTouchEvent(MotionEvent ev) { 623 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 624 case MotionEvent.ACTION_DOWN: 625 mXDown = ev.getX(); 626 mYDown = ev.getY(); 627 break; 628 case MotionEvent.ACTION_POINTER_UP: 629 case MotionEvent.ACTION_UP: 630 if (mTouchState == TOUCH_STATE_REST) { 631 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 632 if (!currentPage.lastDownOnOccupiedCell()) { 633 onWallpaperTap(ev); 634 } 635 } 636 } 637 return super.onInterceptTouchEvent(ev); 638 } 639 640 @Override 641 protected void determineScrollingStart(MotionEvent ev) { 642 if (isSmall()) return; 643 if (!isFinishedSwitchingState()) return; 644 645 float deltaX = Math.abs(ev.getX() - mXDown); 646 float deltaY = Math.abs(ev.getY() - mYDown); 647 648 if (Float.compare(deltaX, 0f) == 0) return; 649 650 float slope = deltaY / deltaX; 651 float theta = (float) Math.atan(slope); 652 653 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 654 cancelCurrentPageLongPress(); 655 } 656 657 if (theta > MAX_SWIPE_ANGLE) { 658 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 659 return; 660 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 661 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 662 // increase the touch slop to make it harder to begin scrolling the workspace. This 663 // results in vertically scrolling widgets to more easily. The higher the angle, the 664 // more we increase touch slop. 665 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 666 float extraRatio = (float) 667 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 668 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 669 } else { 670 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 671 super.determineScrollingStart(ev); 672 } 673 } 674 675 @Override 676 protected boolean isScrollingIndicatorEnabled() { 677 return super.isScrollingIndicatorEnabled() && (mState != State.SPRING_LOADED); 678 } 679 680 protected void onPageBeginMoving() { 681 super.onPageBeginMoving(); 682 683 if (isHardwareAccelerated()) { 684 updateChildrenLayersEnabled(); 685 } else { 686 if (mNextPage != INVALID_PAGE) { 687 // we're snapping to a particular screen 688 enableChildrenCache(mCurrentPage, mNextPage); 689 } else { 690 // this is when user is actively dragging a particular screen, they might 691 // swipe it either left or right (but we won't advance by more than one screen) 692 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 693 } 694 } 695 696 // Only show page outlines as we pan if we are on large screen 697 if (LauncherApplication.isScreenLarge()) { 698 showOutlines(); 699 mIsStaticWallpaper = mWallpaperManager.getWallpaperInfo() == null; 700 } 701 702 // If we are not fading in adjacent screens, we still need to restore the alpha in case the 703 // user scrolls while we are transitioning (should not affect dispatchDraw optimizations) 704 if (!mFadeInAdjacentScreens) { 705 for (int i = 0; i < getChildCount(); ++i) { 706 ((CellLayout) getPageAt(i)).setShortcutAndWidgetAlpha(1f); 707 } 708 } 709 710 // Show the scroll indicator as you pan the page 711 showScrollingIndicator(false); 712 } 713 714 protected void onPageEndMoving() { 715 super.onPageEndMoving(); 716 717 if (isHardwareAccelerated()) { 718 updateChildrenLayersEnabled(); 719 } else { 720 clearChildrenCache(); 721 } 722 723 724 if (mDragController.isDragging()) { 725 if (isSmall()) { 726 // If we are in springloaded mode, then force an event to check if the current touch 727 // is under a new page (to scroll to) 728 mDragController.forceMoveEvent(); 729 } 730 } else { 731 // If we are not mid-dragging, hide the page outlines if we are on a large screen 732 if (LauncherApplication.isScreenLarge()) { 733 hideOutlines(); 734 } 735 736 // Hide the scroll indicator as you pan the page 737 if (!mDragController.isDragging()) { 738 hideScrollingIndicator(false); 739 } 740 } 741 mOverScrollMaxBackgroundAlpha = 0.0f; 742 mOverScrollPageIndex = -1; 743 744 if (mDelayedResizeRunnable != null) { 745 mDelayedResizeRunnable.run(); 746 mDelayedResizeRunnable = null; 747 } 748 749 if (mDelayedSnapToPageRunnable != null) { 750 mDelayedSnapToPageRunnable.run(); 751 mDelayedSnapToPageRunnable = null; 752 } 753 } 754 755 @Override 756 protected void notifyPageSwitchListener() { 757 super.notifyPageSwitchListener(); 758 Launcher.setScreen(mCurrentPage); 759 }; 760 761 // As a ratio of screen height, the total distance we want the parallax effect to span 762 // horizontally 763 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 764 float aspectRatio = width / (float) height; 765 766 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 767 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 768 // We will use these two data points to extrapolate how much the wallpaper parallax effect 769 // to span (ie travel) at any aspect ratio: 770 771 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 772 final float ASPECT_RATIO_PORTRAIT = 10/16f; 773 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 774 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 775 776 // To find out the desired width at different aspect ratios, we use the following two 777 // formulas, where the coefficient on x is the aspect ratio (width/height): 778 // (16/10)x + y = 1.5 779 // (10/16)x + y = 1.2 780 // We solve for x and y and end up with a final formula: 781 final float x = 782 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 783 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 784 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 785 return x * aspectRatio + y; 786 } 787 788 // The range of scroll values for Workspace 789 private int getScrollRange() { 790 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 791 } 792 793 protected void setWallpaperDimension() { 794 DisplayMetrics displayMetrics = new DisplayMetrics(); 795 mLauncher.getWindowManager().getDefaultDisplay().getRealMetrics(displayMetrics); 796 final int maxDim = Math.max(displayMetrics.widthPixels, displayMetrics.heightPixels); 797 final int minDim = Math.min(displayMetrics.widthPixels, displayMetrics.heightPixels); 798 799 // We need to ensure that there is enough extra space in the wallpaper for the intended 800 // parallax effects 801 if (LauncherApplication.isScreenLarge()) { 802 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 803 mWallpaperHeight = maxDim; 804 } else { 805 mWallpaperWidth = Math.max((int) (minDim * WALLPAPER_SCREENS_SPAN), maxDim); 806 mWallpaperHeight = maxDim; 807 } 808 new Thread("setWallpaperDimension") { 809 public void run() { 810 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 811 } 812 }.start(); 813 } 814 815 private float wallpaperOffsetForCurrentScroll() { 816 // Set wallpaper offset steps (1 / (number of screens - 1)) 817 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f); 818 819 // For the purposes of computing the scrollRange and overScrollOffset, we assume 820 // that mLayoutScale is 1. This means that when we're in spring-loaded mode, 821 // there's no discrepancy between the wallpaper offset for a given page. 822 float layoutScale = mLayoutScale; 823 mLayoutScale = 1f; 824 int scrollRange = getScrollRange(); 825 826 // Again, we adjust the wallpaper offset to be consistent between values of mLayoutScale 827 float adjustedScrollX = Math.max(0, Math.min(mScrollX, mMaxScrollX)); 828 adjustedScrollX *= mWallpaperScrollRatio; 829 mLayoutScale = layoutScale; 830 831 float scrollProgress = 832 adjustedScrollX / (float) scrollRange; 833 834 if (LauncherApplication.isScreenLarge() && mIsStaticWallpaper) { 835 // The wallpaper travel width is how far, from left to right, the wallpaper will move 836 // at this orientation. On tablets in portrait mode we don't move all the way to the 837 // edges of the wallpaper, or otherwise the parallax effect would be too strong. 838 int wallpaperTravelWidth = Math.min(mWallpaperTravelWidth, mWallpaperWidth); 839 840 float offsetInDips = wallpaperTravelWidth * scrollProgress + 841 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 842 float offset = offsetInDips / (float) mWallpaperWidth; 843 return offset; 844 } else { 845 return scrollProgress; 846 } 847 } 848 849 private void syncWallpaperOffsetWithScroll() { 850 final boolean enableWallpaperEffects = isHardwareAccelerated(); 851 if (enableWallpaperEffects) { 852 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 853 } 854 } 855 856 public void updateWallpaperOffsetImmediately() { 857 mUpdateWallpaperOffsetImmediately = true; 858 } 859 860 private void updateWallpaperOffsets() { 861 boolean updateNow = false; 862 boolean keepUpdating = true; 863 if (mUpdateWallpaperOffsetImmediately) { 864 updateNow = true; 865 keepUpdating = false; 866 mWallpaperOffset.jumpToFinal(); 867 mUpdateWallpaperOffsetImmediately = false; 868 } else { 869 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 870 } 871 if (updateNow) { 872 if (mWindowToken != null) { 873 mWallpaperManager.setWallpaperOffsets(mWindowToken, 874 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 875 } 876 } 877 if (keepUpdating) { 878 invalidate(); 879 } 880 } 881 882 @Override 883 protected void updateCurrentPageScroll() { 884 super.updateCurrentPageScroll(); 885 computeWallpaperScrollRatio(mCurrentPage); 886 } 887 888 @Override 889 protected void snapToPage(int whichPage) { 890 super.snapToPage(whichPage); 891 computeWallpaperScrollRatio(whichPage); 892 } 893 894 @Override 895 protected void snapToPage(int whichPage, int duration) { 896 super.snapToPage(whichPage, duration); 897 computeWallpaperScrollRatio(whichPage); 898 } 899 900 protected void snapToPage(int whichPage, Runnable r) { 901 if (mDelayedSnapToPageRunnable != null) { 902 mDelayedSnapToPageRunnable.run(); 903 } 904 mDelayedSnapToPageRunnable = r; 905 snapToPage(whichPage, SLOW_PAGE_SNAP_ANIMATION_DURATION); 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 = mDisplaySize.x > mDisplaySize.y; 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 if (!mOverscrollTransformsSet) { 1197 mOverscrollTransformsSet = true; 1198 cl.setPivotX(cl.getMeasuredWidth() * (i == 0 ? 0.75f : 0.25f)); 1199 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1200 cl.setOverscrollTransformsDirty(true); 1201 } 1202 } else if (mOverScrollPageIndex != i) { 1203 cl.setBackgroundAlphaMultiplier( 1204 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1205 } 1206 } 1207 cl.setTranslationX(translationX); 1208 cl.setRotationY(rotation); 1209 if (mFadeInAdjacentScreens && !isSmall()) { 1210 float alpha = 1 - Math.abs(scrollProgress); 1211 cl.setShortcutAndWidgetAlpha(alpha); 1212 } 1213 } 1214 } 1215 if (mOverscrollTransformsSet && !isInOverscroll) { 1216 mOverscrollTransformsSet = false; 1217 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1218 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1219 } 1220 invalidate(); 1221 } 1222 1223 private void screenScrolledStandardUI(int screenCenter) { 1224 if (mOverScrollX < 0 || mOverScrollX > mMaxScrollX) { 1225 int index = mOverScrollX < 0 ? 0 : getChildCount() - 1; 1226 CellLayout cl = (CellLayout) getChildAt(index); 1227 float scrollProgress = getScrollProgress(screenCenter, cl, index); 1228 cl.setOverScrollAmount(Math.abs(scrollProgress), index == 0); 1229 float rotation = - WORKSPACE_OVERSCROLL_ROTATION * scrollProgress; 1230 cl.setRotationY(rotation); 1231 setFadeForOverScroll(Math.abs(scrollProgress)); 1232 if (!mOverscrollTransformsSet) { 1233 mOverscrollTransformsSet = true; 1234 cl.setCameraDistance(mDensity * CAMERA_DISTANCE); 1235 cl.setPivotX(cl.getMeasuredWidth() * (index == 0 ? 0.75f : 0.25f)); 1236 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1237 cl.setOverscrollTransformsDirty(true); 1238 } 1239 } else { 1240 if (mOverscrollFade != 0) { 1241 setFadeForOverScroll(0); 1242 } 1243 if (mOverscrollTransformsSet) { 1244 mOverscrollTransformsSet = false; 1245 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1246 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1247 } 1248 } 1249 } 1250 1251 @Override 1252 protected void screenScrolled(int screenCenter) { 1253 if (LauncherApplication.isScreenLarge()) { 1254 // We don't call super.screenScrolled() here because we handle the adjacent pages alpha 1255 // ourselves (for efficiency), and there are no scrolling indicators to update. 1256 screenScrolledLargeUI(screenCenter); 1257 } else { 1258 super.screenScrolled(screenCenter); 1259 screenScrolledStandardUI(screenCenter); 1260 } 1261 } 1262 1263 @Override 1264 protected void overScroll(float amount) { 1265 if (LauncherApplication.isScreenLarge()) { 1266 dampedOverScroll(amount); 1267 } else { 1268 acceleratedOverScroll(amount); 1269 } 1270 } 1271 1272 protected void onAttachedToWindow() { 1273 super.onAttachedToWindow(); 1274 mWindowToken = getWindowToken(); 1275 computeScroll(); 1276 mDragController.setWindowToken(mWindowToken); 1277 } 1278 1279 protected void onDetachedFromWindow() { 1280 mWindowToken = null; 1281 } 1282 1283 @Override 1284 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1285 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1286 mUpdateWallpaperOffsetImmediately = true; 1287 } 1288 super.onLayout(changed, left, top, right, bottom); 1289 } 1290 1291 @Override 1292 protected void onDraw(Canvas canvas) { 1293 updateWallpaperOffsets(); 1294 1295 // Draw the background gradient if necessary 1296 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1297 int alpha = (int) (mBackgroundAlpha * 255); 1298 mBackground.setAlpha(alpha); 1299 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1300 getMeasuredHeight()); 1301 mBackground.draw(canvas); 1302 } 1303 1304 super.onDraw(canvas); 1305 } 1306 1307 boolean isDrawingBackgroundGradient() { 1308 return (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground); 1309 } 1310 1311 @Override 1312 protected void dispatchDraw(Canvas canvas) { 1313 super.dispatchDraw(canvas); 1314 1315 if (mInScrollArea && !LauncherApplication.isScreenLarge()) { 1316 final int width = getWidth(); 1317 final int height = getHeight(); 1318 final int pageHeight = getChildAt(0).getHeight(); 1319 1320 // Set the height of the outline to be the height of the page 1321 final int offset = (height - pageHeight - mPaddingTop - mPaddingBottom) / 2; 1322 final int paddingTop = mPaddingTop + offset; 1323 final int paddingBottom = mPaddingBottom + offset; 1324 1325 final int page = (mNextPage != INVALID_PAGE ? mNextPage : mCurrentPage); 1326 final CellLayout leftPage = (CellLayout) getChildAt(page - 1); 1327 final CellLayout rightPage = (CellLayout) getChildAt(page + 1); 1328 1329 if (leftPage != null && leftPage.getIsDragOverlapping()) { 1330 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left_holo); 1331 d.setBounds(mScrollX, paddingTop, mScrollX + d.getIntrinsicWidth(), 1332 height - paddingBottom); 1333 d.draw(canvas); 1334 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 1335 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right_holo); 1336 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), paddingTop, mScrollX + width, 1337 height - paddingBottom); 1338 d.draw(canvas); 1339 } 1340 } 1341 } 1342 1343 @Override 1344 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1345 if (!mLauncher.isAllAppsVisible()) { 1346 final Folder openFolder = getOpenFolder(); 1347 if (openFolder != null) { 1348 return openFolder.requestFocus(direction, previouslyFocusedRect); 1349 } else { 1350 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1351 } 1352 } 1353 return false; 1354 } 1355 1356 @Override 1357 public int getDescendantFocusability() { 1358 if (isSmall()) { 1359 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1360 } 1361 return super.getDescendantFocusability(); 1362 } 1363 1364 @Override 1365 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1366 if (!mLauncher.isAllAppsVisible()) { 1367 final Folder openFolder = getOpenFolder(); 1368 if (openFolder != null) { 1369 openFolder.addFocusables(views, direction); 1370 } else { 1371 super.addFocusables(views, direction, focusableMode); 1372 } 1373 } 1374 } 1375 1376 public boolean isSmall() { 1377 return mState == State.SMALL || mState == State.SPRING_LOADED; 1378 } 1379 1380 void enableChildrenCache(int fromPage, int toPage) { 1381 if (fromPage > toPage) { 1382 final int temp = fromPage; 1383 fromPage = toPage; 1384 toPage = temp; 1385 } 1386 1387 final int screenCount = getChildCount(); 1388 1389 fromPage = Math.max(fromPage, 0); 1390 toPage = Math.min(toPage, screenCount - 1); 1391 1392 for (int i = fromPage; i <= toPage; i++) { 1393 final CellLayout layout = (CellLayout) getChildAt(i); 1394 layout.setChildrenDrawnWithCacheEnabled(true); 1395 layout.setChildrenDrawingCacheEnabled(true); 1396 } 1397 } 1398 1399 void clearChildrenCache() { 1400 final int screenCount = getChildCount(); 1401 for (int i = 0; i < screenCount; i++) { 1402 final CellLayout layout = (CellLayout) getChildAt(i); 1403 layout.setChildrenDrawnWithCacheEnabled(false); 1404 // In software mode, we don't want the items to continue to be drawn into bitmaps 1405 if (!isHardwareAccelerated()) { 1406 layout.setChildrenDrawingCacheEnabled(false); 1407 } 1408 } 1409 } 1410 1411 private void updateChildrenLayersEnabled() { 1412 boolean small = mState == State.SMALL || mIsSwitchingState; 1413 boolean enableChildrenLayers = small || mAnimatingViewIntoPlace || isPageMoving(); 1414 1415 if (enableChildrenLayers != mChildrenLayersEnabled) { 1416 mChildrenLayersEnabled = enableChildrenLayers; 1417 for (int i = 0; i < getPageCount(); i++) { 1418 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(mChildrenLayersEnabled); 1419 } 1420 } 1421 } 1422 1423 protected void onWallpaperTap(MotionEvent ev) { 1424 final int[] position = mTempCell; 1425 getLocationOnScreen(position); 1426 1427 int pointerIndex = ev.getActionIndex(); 1428 position[0] += (int) ev.getX(pointerIndex); 1429 position[1] += (int) ev.getY(pointerIndex); 1430 1431 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1432 ev.getAction() == MotionEvent.ACTION_UP 1433 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1434 position[0], position[1], 0, null); 1435 } 1436 1437 /* 1438 * This interpolator emulates the rate at which the perceived scale of an object changes 1439 * as its distance from a camera increases. When this interpolator is applied to a scale 1440 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1441 * from the camera. 1442 */ 1443 static class ZInterpolator implements TimeInterpolator { 1444 private float focalLength; 1445 1446 public ZInterpolator(float foc) { 1447 focalLength = foc; 1448 } 1449 1450 public float getInterpolation(float input) { 1451 return (1.0f - focalLength / (focalLength + input)) / 1452 (1.0f - focalLength / (focalLength + 1.0f)); 1453 } 1454 } 1455 1456 /* 1457 * The exact reverse of ZInterpolator. 1458 */ 1459 static class InverseZInterpolator implements TimeInterpolator { 1460 private ZInterpolator zInterpolator; 1461 public InverseZInterpolator(float foc) { 1462 zInterpolator = new ZInterpolator(foc); 1463 } 1464 public float getInterpolation(float input) { 1465 return 1 - zInterpolator.getInterpolation(1 - input); 1466 } 1467 } 1468 1469 /* 1470 * ZInterpolator compounded with an ease-out. 1471 */ 1472 static class ZoomOutInterpolator implements TimeInterpolator { 1473 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(0.75f); 1474 private final ZInterpolator zInterpolator = new ZInterpolator(0.13f); 1475 1476 public float getInterpolation(float input) { 1477 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1478 } 1479 } 1480 1481 /* 1482 * InvereZInterpolator compounded with an ease-out. 1483 */ 1484 static class ZoomInInterpolator implements TimeInterpolator { 1485 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1486 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1487 1488 public float getInterpolation(float input) { 1489 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1490 } 1491 } 1492 1493 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1494 1495 /* 1496 * 1497 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1498 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1499 * 1500 * These methods mark the appropriate pages as accepting drops (which alters their visual 1501 * appearance). 1502 * 1503 */ 1504 public void onDragStartedWithItem(View v) { 1505 final Canvas canvas = new Canvas(); 1506 1507 // The outline is used to visualize where the item will land if dropped 1508 mDragOutline = createDragOutline(v, canvas, DRAG_BITMAP_PADDING); 1509 } 1510 1511 public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, Paint alphaClipPaint) { 1512 final Canvas canvas = new Canvas(); 1513 1514 int[] size = estimateItemSize(info.spanX, info.spanY, info, false); 1515 1516 // The outline is used to visualize where the item will land if dropped 1517 mDragOutline = createDragOutline(b, canvas, DRAG_BITMAP_PADDING, size[0], 1518 size[1], alphaClipPaint); 1519 } 1520 1521 public void exitWidgetResizeMode() { 1522 DragLayer dragLayer = mLauncher.getDragLayer(); 1523 dragLayer.clearAllResizeFrames(); 1524 } 1525 1526 private void initAnimationArrays() { 1527 final int childCount = getChildCount(); 1528 if (mOldTranslationXs != null) return; 1529 mOldTranslationXs = new float[childCount]; 1530 mOldTranslationYs = new float[childCount]; 1531 mOldScaleXs = new float[childCount]; 1532 mOldScaleYs = new float[childCount]; 1533 mOldBackgroundAlphas = new float[childCount]; 1534 mOldBackgroundAlphaMultipliers = new float[childCount]; 1535 mOldAlphas = new float[childCount]; 1536 mOldRotationYs = new float[childCount]; 1537 mNewTranslationXs = new float[childCount]; 1538 mNewTranslationYs = new float[childCount]; 1539 mNewScaleXs = new float[childCount]; 1540 mNewScaleYs = new float[childCount]; 1541 mNewBackgroundAlphas = new float[childCount]; 1542 mNewBackgroundAlphaMultipliers = new float[childCount]; 1543 mNewAlphas = new float[childCount]; 1544 mNewRotationYs = new float[childCount]; 1545 } 1546 1547 Animator getChangeStateAnimation(final State state, boolean animated) { 1548 return getChangeStateAnimation(state, animated, 0); 1549 } 1550 1551 Animator getChangeStateAnimation(final State state, boolean animated, int delay) { 1552 if (mState == state) { 1553 return null; 1554 } 1555 1556 // Initialize animation arrays for the first time if necessary 1557 initAnimationArrays(); 1558 1559 AnimatorSet anim = animated ? new AnimatorSet() : null; 1560 1561 // Stop any scrolling, move to the current page right away 1562 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1563 1564 final State oldState = mState; 1565 final boolean oldStateIsNormal = (oldState == State.NORMAL); 1566 final boolean oldStateIsSpringLoaded = (oldState == State.SPRING_LOADED); 1567 final boolean oldStateIsSmall = (oldState == State.SMALL); 1568 mState = state; 1569 final boolean stateIsNormal = (state == State.NORMAL); 1570 final boolean stateIsSpringLoaded = (state == State.SPRING_LOADED); 1571 final boolean stateIsSmall = (state == State.SMALL); 1572 float finalScaleFactor = 1.0f; 1573 float finalBackgroundAlpha = stateIsSpringLoaded ? 1.0f : 0f; 1574 float translationX = 0; 1575 float translationY = 0; 1576 boolean zoomIn = true; 1577 1578 if (state != State.NORMAL) { 1579 finalScaleFactor = mSpringLoadedShrinkFactor - (stateIsSmall ? 0.1f : 0); 1580 if (oldStateIsNormal && stateIsSmall) { 1581 zoomIn = false; 1582 setLayoutScale(finalScaleFactor); 1583 updateChildrenLayersEnabled(); 1584 } else { 1585 finalBackgroundAlpha = 1.0f; 1586 setLayoutScale(finalScaleFactor); 1587 } 1588 } else { 1589 setLayoutScale(1.0f); 1590 } 1591 1592 final int duration = zoomIn ? 1593 getResources().getInteger(R.integer.config_workspaceUnshrinkTime) : 1594 getResources().getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1595 for (int i = 0; i < getChildCount(); i++) { 1596 final CellLayout cl = (CellLayout) getChildAt(i); 1597 float rotation = 0f; 1598 float initialAlpha = cl.getAlpha(); 1599 float finalAlphaMultiplierValue = 1f; 1600 float finalAlpha = (!mFadeInAdjacentScreens || stateIsSpringLoaded || 1601 (i == mCurrentPage)) ? 1f : 0f; 1602 1603 // Determine the pages alpha during the state transition 1604 if ((oldStateIsSmall && stateIsNormal) || 1605 (oldStateIsNormal && stateIsSmall)) { 1606 // To/from workspace - only show the current page unless the transition is not 1607 // animated and the animation end callback below doesn't run; 1608 // or, if we're in spring-loaded mode 1609 if (i == mCurrentPage || !animated || oldStateIsSpringLoaded) { 1610 finalAlpha = 1f; 1611 finalAlphaMultiplierValue = 0f; 1612 } else { 1613 initialAlpha = 0f; 1614 finalAlpha = 0f; 1615 } 1616 } 1617 1618 // Update the rotation of the screen (don't apply rotation on Phone UI) 1619 if (LauncherApplication.isScreenLarge()) { 1620 if (i < mCurrentPage) { 1621 rotation = WORKSPACE_ROTATION; 1622 } else if (i > mCurrentPage) { 1623 rotation = -WORKSPACE_ROTATION; 1624 } 1625 } 1626 1627 // If the screen is not xlarge, then don't rotate the CellLayouts 1628 // NOTE: If we don't update the side pages alpha, then we should not hide the side 1629 // pages. see unshrink(). 1630 if (LauncherApplication.isScreenLarge()) { 1631 translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1632 } 1633 1634 mOldAlphas[i] = initialAlpha; 1635 mNewAlphas[i] = finalAlpha; 1636 if (animated) { 1637 mOldTranslationXs[i] = cl.getTranslationX(); 1638 mOldTranslationYs[i] = cl.getTranslationY(); 1639 mOldScaleXs[i] = cl.getScaleX(); 1640 mOldScaleYs[i] = cl.getScaleY(); 1641 mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1642 mOldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1643 mOldRotationYs[i] = cl.getRotationY(); 1644 1645 mNewTranslationXs[i] = translationX; 1646 mNewTranslationYs[i] = translationY; 1647 mNewScaleXs[i] = finalScaleFactor; 1648 mNewScaleYs[i] = finalScaleFactor; 1649 mNewBackgroundAlphas[i] = finalBackgroundAlpha; 1650 mNewBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1651 mNewRotationYs[i] = rotation; 1652 } else { 1653 cl.setTranslationX(translationX); 1654 cl.setTranslationY(translationY); 1655 cl.setScaleX(finalScaleFactor); 1656 cl.setScaleY(finalScaleFactor); 1657 cl.setBackgroundAlpha(finalBackgroundAlpha); 1658 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1659 cl.setShortcutAndWidgetAlpha(finalAlpha); 1660 cl.setRotationY(rotation); 1661 } 1662 } 1663 1664 if (animated) { 1665 for (int index = 0; index < getChildCount(); index++) { 1666 final int i = index; 1667 final CellLayout cl = (CellLayout) getChildAt(i); 1668 if (mOldAlphas[i] == 0 && mNewAlphas[i] == 0) { 1669 cl.setTranslationX(mNewTranslationXs[i]); 1670 cl.setTranslationY(mNewTranslationYs[i]); 1671 cl.setScaleX(mNewScaleXs[i]); 1672 cl.setScaleY(mNewScaleYs[i]); 1673 cl.setBackgroundAlpha(mNewBackgroundAlphas[i]); 1674 cl.setBackgroundAlphaMultiplier(mNewBackgroundAlphaMultipliers[i]); 1675 cl.setShortcutAndWidgetAlpha(mNewAlphas[i]); 1676 cl.setRotationY(mNewRotationYs[i]); 1677 } else { 1678 LauncherViewPropertyAnimator a = new LauncherViewPropertyAnimator(cl); 1679 a.translationX(mNewTranslationXs[i]) 1680 .translationY(mNewTranslationYs[i]) 1681 .scaleX(mNewScaleXs[i]) 1682 .scaleY(mNewScaleYs[i]) 1683 .setDuration(duration) 1684 .setInterpolator(mZoomInInterpolator); 1685 anim.play(a); 1686 1687 if (mOldAlphas[i] != mNewAlphas[i]) { 1688 LauncherViewPropertyAnimator alphaAnim = 1689 new LauncherViewPropertyAnimator(cl.getShortcutsAndWidgets()); 1690 alphaAnim.alpha(mNewAlphas[i]) 1691 .setDuration(duration) 1692 .setInterpolator(mZoomInInterpolator); 1693 anim.play(alphaAnim); 1694 } 1695 if (mOldRotationYs[i] != 0 || mNewRotationYs[i] != 0) { 1696 ValueAnimator rotate = ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1697 rotate.setInterpolator(new DecelerateInterpolator(2.0f)); 1698 rotate.addUpdateListener(new LauncherAnimatorUpdateListener() { 1699 public void onAnimationUpdate(float a, float b) { 1700 cl.setRotationY(a * mOldRotationYs[i] + b * mNewRotationYs[i]); 1701 } 1702 }); 1703 anim.play(rotate); 1704 } 1705 if (mOldBackgroundAlphas[i] != 0 || 1706 mNewBackgroundAlphas[i] != 0 || 1707 mOldBackgroundAlphaMultipliers[i] != 0 || 1708 mNewBackgroundAlphaMultipliers[i] != 0) { 1709 ValueAnimator bgAnim = ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1710 bgAnim.setInterpolator(mZoomInInterpolator); 1711 bgAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1712 public void onAnimationUpdate(float a, float b) { 1713 cl.setBackgroundAlpha( 1714 a * mOldBackgroundAlphas[i] + 1715 b * mNewBackgroundAlphas[i]); 1716 cl.setBackgroundAlphaMultiplier( 1717 a * mOldBackgroundAlphaMultipliers[i] + 1718 b * mNewBackgroundAlphaMultipliers[i]); 1719 } 1720 }); 1721 anim.play(bgAnim); 1722 } 1723 } 1724 } 1725 anim.setStartDelay(delay); 1726 } 1727 1728 if (stateIsSpringLoaded) { 1729 // Right now we're covered by Apps Customize 1730 // Show the background gradient immediately, so the gradient will 1731 // be showing once AppsCustomize disappears 1732 animateBackgroundGradient(getResources().getInteger( 1733 R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, false); 1734 } else { 1735 // Fade the background gradient away 1736 animateBackgroundGradient(0f, true); 1737 } 1738 return anim; 1739 } 1740 1741 @Override 1742 public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) { 1743 mIsSwitchingState = true; 1744 cancelScrollingIndicatorAnimations(); 1745 } 1746 1747 @Override 1748 public void onLauncherTransitionStep(Launcher l, float t) { 1749 mTransitionProgress = t; 1750 } 1751 1752 @Override 1753 public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) { 1754 mIsSwitchingState = false; 1755 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 1756 updateChildrenLayersEnabled(); 1757 // The code in getChangeStateAnimation to determine initialAlpha and finalAlpha will ensure 1758 // ensure that only the current page is visible during (and subsequently, after) the 1759 // transition animation. If fade adjacent pages is disabled, then re-enable the page 1760 // visibility after the transition animation. 1761 if (!mFadeInAdjacentScreens) { 1762 for (int i = 0; i < getChildCount(); i++) { 1763 final CellLayout cl = (CellLayout) getChildAt(i); 1764 cl.setShortcutAndWidgetAlpha(1f); 1765 } 1766 } 1767 } 1768 1769 @Override 1770 public View getContent() { 1771 return this; 1772 } 1773 1774 /** 1775 * Draw the View v into the given Canvas. 1776 * 1777 * @param v the view to draw 1778 * @param destCanvas the canvas to draw on 1779 * @param padding the horizontal and vertical padding to use when drawing 1780 */ 1781 private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { 1782 final Rect clipRect = mTempRect; 1783 v.getDrawingRect(clipRect); 1784 1785 boolean textVisible = false; 1786 1787 destCanvas.save(); 1788 if (v instanceof TextView && pruneToDrawable) { 1789 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1790 clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); 1791 destCanvas.translate(padding / 2, padding / 2); 1792 d.draw(destCanvas); 1793 } else { 1794 if (v instanceof FolderIcon) { 1795 // For FolderIcons the text can bleed into the icon area, and so we need to 1796 // hide the text completely (which can't be achieved by clipping). 1797 if (((FolderIcon) v).getTextVisible()) { 1798 ((FolderIcon) v).setTextVisible(false); 1799 textVisible = true; 1800 } 1801 } else if (v instanceof BubbleTextView) { 1802 final BubbleTextView tv = (BubbleTextView) v; 1803 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1804 tv.getLayout().getLineTop(0); 1805 } else if (v instanceof TextView) { 1806 final TextView tv = (TextView) v; 1807 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1808 tv.getLayout().getLineTop(0); 1809 } 1810 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1811 destCanvas.clipRect(clipRect, Op.REPLACE); 1812 v.draw(destCanvas); 1813 1814 // Restore text visibility of FolderIcon if necessary 1815 if (textVisible) { 1816 ((FolderIcon) v).setTextVisible(true); 1817 } 1818 } 1819 destCanvas.restore(); 1820 } 1821 1822 /** 1823 * Returns a new bitmap to show when the given View is being dragged around. 1824 * Responsibility for the bitmap is transferred to the caller. 1825 */ 1826 public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1827 Bitmap b; 1828 1829 if (v instanceof TextView) { 1830 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1831 b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, 1832 d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); 1833 } else { 1834 b = Bitmap.createBitmap( 1835 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1836 } 1837 1838 canvas.setBitmap(b); 1839 drawDragView(v, canvas, padding, true); 1840 canvas.setBitmap(null); 1841 1842 return b; 1843 } 1844 1845 /** 1846 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1847 * Responsibility for the bitmap is transferred to the caller. 1848 */ 1849 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1850 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1851 final Bitmap b = Bitmap.createBitmap( 1852 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1853 1854 canvas.setBitmap(b); 1855 drawDragView(v, canvas, padding, true); 1856 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1857 canvas.setBitmap(null); 1858 return b; 1859 } 1860 1861 /** 1862 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1863 * Responsibility for the bitmap is transferred to the caller. 1864 */ 1865 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h, 1866 Paint alphaClipPaint) { 1867 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1868 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1869 canvas.setBitmap(b); 1870 1871 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 1872 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 1873 (h - padding) / (float) orig.getHeight()); 1874 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 1875 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 1876 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 1877 1878 // center the image 1879 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 1880 1881 canvas.drawBitmap(orig, src, dst, null); 1882 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor, 1883 alphaClipPaint); 1884 canvas.setBitmap(null); 1885 1886 return b; 1887 } 1888 1889 void startDrag(CellLayout.CellInfo cellInfo) { 1890 View child = cellInfo.cell; 1891 1892 // Make sure the drag was started by a long press as opposed to a long click. 1893 if (!child.isInTouchMode()) { 1894 return; 1895 } 1896 1897 mDragInfo = cellInfo; 1898 child.setVisibility(INVISIBLE); 1899 CellLayout layout = (CellLayout) child.getParent().getParent(); 1900 layout.prepareChildForDrag(child); 1901 1902 child.clearFocus(); 1903 child.setPressed(false); 1904 1905 final Canvas canvas = new Canvas(); 1906 1907 // The outline is used to visualize where the item will land if dropped 1908 mDragOutline = createDragOutline(child, canvas, DRAG_BITMAP_PADDING); 1909 beginDragShared(child, this); 1910 } 1911 1912 public void beginDragShared(View child, DragSource source) { 1913 Resources r = getResources(); 1914 1915 // The drag bitmap follows the touch point around on the screen 1916 final Bitmap b = createDragBitmap(child, new Canvas(), DRAG_BITMAP_PADDING); 1917 1918 final int bmpWidth = b.getWidth(); 1919 final int bmpHeight = b.getHeight(); 1920 1921 mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 1922 int dragLayerX = 1923 Math.round(mTempXY[0] - (bmpWidth - child.getScaleX() * child.getWidth()) / 2); 1924 int dragLayerY = 1925 Math.round(mTempXY[1] - (bmpHeight - child.getScaleY() * bmpHeight) / 2 1926 - DRAG_BITMAP_PADDING / 2); 1927 1928 Point dragVisualizeOffset = null; 1929 Rect dragRect = null; 1930 if (child instanceof BubbleTextView || child instanceof PagedViewIcon) { 1931 int iconSize = r.getDimensionPixelSize(R.dimen.app_icon_size); 1932 int iconPaddingTop = r.getDimensionPixelSize(R.dimen.app_icon_padding_top); 1933 int top = child.getPaddingTop(); 1934 int left = (bmpWidth - iconSize) / 2; 1935 int right = left + iconSize; 1936 int bottom = top + iconSize; 1937 dragLayerY += top; 1938 // Note: The drag region is used to calculate drag layer offsets, but the 1939 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 1940 dragVisualizeOffset = new Point(-DRAG_BITMAP_PADDING / 2, 1941 iconPaddingTop - DRAG_BITMAP_PADDING / 2); 1942 dragRect = new Rect(left, top, right, bottom); 1943 } else if (child instanceof FolderIcon) { 1944 int previewSize = r.getDimensionPixelSize(R.dimen.folder_preview_size); 1945 dragRect = new Rect(0, 0, child.getWidth(), previewSize); 1946 } 1947 1948 // Clear the pressed state if necessary 1949 if (child instanceof BubbleTextView) { 1950 BubbleTextView icon = (BubbleTextView) child; 1951 icon.clearPressedOrFocusedBackground(); 1952 } 1953 1954 mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 1955 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect, child.getScaleX()); 1956 b.recycle(); 1957 1958 // Show the scrolling indicator when you pick up an item 1959 showScrollingIndicator(false); 1960 } 1961 1962 void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, int screen, 1963 int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { 1964 View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); 1965 1966 final int[] cellXY = new int[2]; 1967 target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1968 addInScreen(view, container, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1969 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, cellXY[0], 1970 cellXY[1]); 1971 } 1972 1973 public boolean transitionStateShouldAllowDrop() { 1974 return ((!isSwitchingState() || mTransitionProgress > 0.5f) && mState != State.SMALL); 1975 } 1976 1977 /** 1978 * {@inheritDoc} 1979 */ 1980 public boolean acceptDrop(DragObject d) { 1981 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1982 CellLayout dropTargetLayout = mDropToLayout; 1983 if (d.dragSource != this) { 1984 // Don't accept the drop if we're not over a screen at time of drop 1985 if (dropTargetLayout == null) { 1986 return false; 1987 } 1988 if (!transitionStateShouldAllowDrop()) return false; 1989 1990 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 1991 d.dragView, mDragViewVisualCenter); 1992 1993 // We want the point to be mapped to the dragTarget. 1994 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 1995 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 1996 } else { 1997 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 1998 } 1999 2000 int spanX = 1; 2001 int spanY = 1; 2002 if (mDragInfo != null) { 2003 final CellLayout.CellInfo dragCellInfo = mDragInfo; 2004 spanX = dragCellInfo.spanX; 2005 spanY = dragCellInfo.spanY; 2006 } else { 2007 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 2008 spanX = dragInfo.spanX; 2009 spanY = dragInfo.spanY; 2010 } 2011 2012 int minSpanX = spanX; 2013 int minSpanY = spanY; 2014 if (d.dragInfo instanceof PendingAddWidgetInfo) { 2015 minSpanX = ((PendingAddWidgetInfo) d.dragInfo).minSpanX; 2016 minSpanY = ((PendingAddWidgetInfo) d.dragInfo).minSpanY; 2017 } 2018 2019 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2020 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, dropTargetLayout, 2021 mTargetCell); 2022 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2023 mDragViewVisualCenter[1], mTargetCell); 2024 if (willCreateUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, 2025 mTargetCell, distance, true)) { 2026 return true; 2027 } 2028 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, 2029 mTargetCell, distance)) { 2030 return true; 2031 } 2032 2033 int[] resultSpan = new int[2]; 2034 mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], 2035 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2036 null, mTargetCell, resultSpan, CellLayout.MODE_ACCEPT_DROP); 2037 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2038 2039 // Don't accept the drop if there's no room for the item 2040 if (!foundCell) { 2041 // Don't show the message if we are dropping on the AllApps button and the hotseat 2042 // is full 2043 boolean isHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2044 if (mTargetCell != null && isHotseat) { 2045 Hotseat hotseat = mLauncher.getHotseat(); 2046 if (hotseat.isAllAppsButtonRank( 2047 hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { 2048 return false; 2049 } 2050 } 2051 2052 mLauncher.showOutOfSpaceMessage(isHotseat); 2053 return false; 2054 } 2055 } 2056 return true; 2057 } 2058 2059 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, float 2060 distance, boolean considerTimeout) { 2061 if (distance > mMaxDistanceForFolderCreation) return false; 2062 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2063 2064 if (dropOverView != null) { 2065 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2066 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2067 return false; 2068 } 2069 } 2070 2071 boolean hasntMoved = false; 2072 if (mDragInfo != null) { 2073 hasntMoved = dropOverView == mDragInfo.cell; 2074 } 2075 2076 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2077 return false; 2078 } 2079 2080 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2081 boolean willBecomeShortcut = 2082 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2083 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2084 2085 return (aboveShortcut && willBecomeShortcut); 2086 } 2087 2088 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell, 2089 float distance) { 2090 if (distance > mMaxDistanceForFolderCreation) return false; 2091 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2092 2093 if (dropOverView != null) { 2094 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2095 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2096 return false; 2097 } 2098 } 2099 2100 if (dropOverView instanceof FolderIcon) { 2101 FolderIcon fi = (FolderIcon) dropOverView; 2102 if (fi.acceptDrop(dragInfo)) { 2103 return true; 2104 } 2105 } 2106 return false; 2107 } 2108 2109 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2110 int[] targetCell, float distance, boolean external, DragView dragView, 2111 Runnable postAnimationRunnable) { 2112 if (distance > mMaxDistanceForFolderCreation) return false; 2113 View v = target.getChildAt(targetCell[0], targetCell[1]); 2114 2115 boolean hasntMoved = false; 2116 if (mDragInfo != null) { 2117 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2118 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2119 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2120 } 2121 2122 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2123 mCreateUserFolderOnDrop = false; 2124 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 2125 2126 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2127 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2128 2129 if (aboveShortcut && willBecomeShortcut) { 2130 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2131 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2132 // if the drag started here, we need to remove it from the workspace 2133 if (!external) { 2134 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2135 } 2136 2137 Rect folderLocation = new Rect(); 2138 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2139 target.removeView(v); 2140 2141 FolderIcon fi = 2142 mLauncher.addFolder(target, container, screen, targetCell[0], targetCell[1]); 2143 destInfo.cellX = -1; 2144 destInfo.cellY = -1; 2145 sourceInfo.cellX = -1; 2146 sourceInfo.cellY = -1; 2147 2148 // If the dragView is null, we can't animate 2149 boolean animate = dragView != null; 2150 if (animate) { 2151 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2152 postAnimationRunnable); 2153 } else { 2154 fi.addItem(destInfo); 2155 fi.addItem(sourceInfo); 2156 } 2157 return true; 2158 } 2159 return false; 2160 } 2161 2162 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2163 float distance, DragObject d, boolean external) { 2164 if (distance > mMaxDistanceForFolderCreation) return false; 2165 2166 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2167 if (!mAddToExistingFolderOnDrop) return false; 2168 mAddToExistingFolderOnDrop = false; 2169 2170 if (dropOverView instanceof FolderIcon) { 2171 FolderIcon fi = (FolderIcon) dropOverView; 2172 if (fi.acceptDrop(d.dragInfo)) { 2173 fi.onDrop(d); 2174 2175 // if the drag started here, we need to remove it from the workspace 2176 if (!external) { 2177 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2178 } 2179 return true; 2180 } 2181 } 2182 return false; 2183 } 2184 2185 public void onDrop(final DragObject d) { 2186 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2187 mDragViewVisualCenter); 2188 2189 CellLayout dropTargetLayout = mDropToLayout; 2190 2191 // We want the point to be mapped to the dragTarget. 2192 if (dropTargetLayout != null) { 2193 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 2194 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2195 } else { 2196 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 2197 } 2198 } 2199 2200 int snapScreen = -1; 2201 boolean resizeOnDrop = false; 2202 if (d.dragSource != this) { 2203 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2204 (int) mDragViewVisualCenter[1] }; 2205 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2206 } else if (mDragInfo != null) { 2207 final View cell = mDragInfo.cell; 2208 2209 Runnable resizeRunnable = null; 2210 if (dropTargetLayout != null) { 2211 // Move internally 2212 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2213 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2214 long container = hasMovedIntoHotseat ? 2215 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2216 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2217 int screen = (mTargetCell[0] < 0) ? 2218 mDragInfo.screen : indexOfChild(dropTargetLayout); 2219 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2220 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2221 // First we find the cell nearest to point at which the item is 2222 // dropped, without any consideration to whether there is an item there. 2223 2224 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2225 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2226 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2227 mDragViewVisualCenter[1], mTargetCell); 2228 2229 // If the item being dropped is a shortcut and the nearest drop 2230 // cell also contains a shortcut, then create a folder with the two shortcuts. 2231 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2232 dropTargetLayout, mTargetCell, distance, false, d.dragView, null)) { 2233 return; 2234 } 2235 2236 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, 2237 distance, d, false)) { 2238 return; 2239 } 2240 2241 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2242 // we need to find the nearest cell location that is vacant 2243 ItemInfo item = (ItemInfo) d.dragInfo; 2244 int minSpanX = item.spanX; 2245 int minSpanY = item.spanY; 2246 if (item.minSpanX > 0 && item.minSpanY > 0) { 2247 minSpanX = item.minSpanX; 2248 minSpanY = item.minSpanY; 2249 } 2250 2251 int[] resultSpan = new int[2]; 2252 mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], 2253 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, cell, 2254 mTargetCell, resultSpan, CellLayout.MODE_ON_DROP); 2255 2256 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2257 if (foundCell && (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY)) { 2258 resizeOnDrop = true; 2259 item.spanX = resultSpan[0]; 2260 item.spanY = resultSpan[1]; 2261 } 2262 2263 if (mCurrentPage != screen && !hasMovedIntoHotseat) { 2264 snapScreen = screen; 2265 snapToPage(screen); 2266 } 2267 2268 if (foundCell) { 2269 final ItemInfo info = (ItemInfo) cell.getTag(); 2270 if (hasMovedLayouts) { 2271 // Reparent the view 2272 getParentCellLayoutForView(cell).removeView(cell); 2273 addInScreen(cell, container, screen, mTargetCell[0], mTargetCell[1], 2274 info.spanX, info.spanY); 2275 } 2276 2277 // update the item's position after drop 2278 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2279 lp.cellX = lp.tmpCellX = mTargetCell[0]; 2280 lp.cellY = lp.tmpCellY = mTargetCell[1]; 2281 lp.cellHSpan = item.spanX; 2282 lp.cellVSpan = item.spanY; 2283 lp.isLockedToGrid = true; 2284 cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screen, 2285 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2286 2287 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2288 cell instanceof LauncherAppWidgetHostView) { 2289 final CellLayout cellLayout = dropTargetLayout; 2290 // We post this call so that the widget has a chance to be placed 2291 // in its final location 2292 2293 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2294 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2295 if (pinfo != null && 2296 pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2297 final Runnable addResizeFrame = new Runnable() { 2298 public void run() { 2299 DragLayer dragLayer = mLauncher.getDragLayer(); 2300 dragLayer.addResizeFrame(info, hostView, cellLayout); 2301 } 2302 }; 2303 resizeRunnable = (new Runnable() { 2304 public void run() { 2305 if (!isPageMoving()) { 2306 addResizeFrame.run(); 2307 } else { 2308 mDelayedResizeRunnable = addResizeFrame; 2309 } 2310 } 2311 }); 2312 } 2313 } 2314 2315 LauncherModel.moveItemInDatabase(mLauncher, info, container, screen, lp.cellX, 2316 lp.cellY); 2317 } else { 2318 // If we can't find a drop location, we return the item to its original position 2319 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2320 mTargetCell[0] = lp.cellX; 2321 mTargetCell[1] = lp.cellY; 2322 } 2323 } 2324 2325 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2326 final Runnable finalResizeRunnable = resizeRunnable; 2327 // Prepare it to be animated into its new position 2328 // This must be called after the view has been re-parented 2329 final Runnable onCompleteRunnable = new Runnable() { 2330 @Override 2331 public void run() { 2332 mAnimatingViewIntoPlace = false; 2333 updateChildrenLayersEnabled(); 2334 if (finalResizeRunnable != null) { 2335 finalResizeRunnable.run(); 2336 } 2337 } 2338 }; 2339 mAnimatingViewIntoPlace = true; 2340 if (d.dragView.hasDrawn()) { 2341 final ItemInfo info = (ItemInfo) cell.getTag(); 2342 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET) { 2343 int animationType = resizeOnDrop ? ANIMATE_INTO_POSITION_AND_RESIZE : 2344 ANIMATE_INTO_POSITION_AND_DISAPPEAR; 2345 animateWidgetDrop(info, parent, d.dragView, 2346 onCompleteRunnable, animationType, cell, false); 2347 } else { 2348 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2349 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2350 onCompleteRunnable, this); 2351 } 2352 } else { 2353 d.deferDragViewCleanupPostAnimation = false; 2354 cell.setVisibility(VISIBLE); 2355 } 2356 parent.onDropChild(cell); 2357 } 2358 } 2359 2360 public void setFinalScrollForPageChange(int screen) { 2361 if (screen >= 0) { 2362 mSavedScrollX = getScrollX(); 2363 CellLayout cl = (CellLayout) getChildAt(screen); 2364 mSavedTranslationX = cl.getTranslationX(); 2365 mSavedRotationY = cl.getRotationY(); 2366 final int newX = getChildOffset(screen) - getRelativeChildOffset(screen); 2367 setScrollX(newX); 2368 cl.setTranslationX(0f); 2369 cl.setRotationY(0f); 2370 } 2371 } 2372 2373 public void resetFinalScrollForPageChange(int screen) { 2374 if (screen >= 0) { 2375 CellLayout cl = (CellLayout) getChildAt(screen); 2376 setScrollX(mSavedScrollX); 2377 cl.setTranslationX(mSavedTranslationX); 2378 cl.setRotationY(mSavedRotationY); 2379 } 2380 } 2381 2382 public void getViewLocationRelativeToSelf(View v, int[] location) { 2383 getLocationInWindow(location); 2384 int x = location[0]; 2385 int y = location[1]; 2386 2387 v.getLocationInWindow(location); 2388 int vX = location[0]; 2389 int vY = location[1]; 2390 2391 location[0] = vX - x; 2392 location[1] = vY - y; 2393 } 2394 2395 public void onDragEnter(DragObject d) { 2396 mDragEnforcer.onDragEnter(); 2397 mCreateUserFolderOnDrop = false; 2398 mAddToExistingFolderOnDrop = false; 2399 2400 mDropToLayout = null; 2401 CellLayout layout = getCurrentDropLayout(); 2402 setCurrentDropLayout(layout); 2403 setCurrentDragOverlappingLayout(layout); 2404 2405 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2406 // don't need to show the outlines 2407 if (LauncherApplication.isScreenLarge()) { 2408 showOutlines(); 2409 } 2410 } 2411 2412 public void onDragExit(DragObject d) { 2413 mDragEnforcer.onDragExit(); 2414 2415 // Here we store the final page that will be dropped to, if the workspace in fact 2416 // receives the drop 2417 if (mInScrollArea) { 2418 mDropToLayout = mDragOverlappingLayout; 2419 } else { 2420 mDropToLayout = mDragTargetLayout; 2421 } 2422 2423 if (mDragMode == DRAG_MODE_CREATE_FOLDER) { 2424 mCreateUserFolderOnDrop = true; 2425 } else if (mDragMode == DRAG_MODE_ADD_TO_FOLDER) { 2426 mAddToExistingFolderOnDrop = true; 2427 } 2428 2429 // Reset the scroll area and previous drag target 2430 onResetScrollArea(); 2431 setCurrentDropLayout(null); 2432 setCurrentDragOverlappingLayout(null); 2433 2434 mSpringLoadedDragController.cancel(); 2435 2436 if (!mIsPageMoving) { 2437 hideOutlines(); 2438 } 2439 } 2440 2441 void setCurrentDropLayout(CellLayout layout) { 2442 if (mDragTargetLayout != null) { 2443 mDragTargetLayout.revertTempState(); 2444 mDragTargetLayout.onDragExit(); 2445 } 2446 mDragTargetLayout = layout; 2447 if (mDragTargetLayout != null) { 2448 mDragTargetLayout.onDragEnter(); 2449 } 2450 cleanupReorder(true); 2451 cleanupFolderCreation(); 2452 setCurrentDropOverCell(-1, -1); 2453 } 2454 2455 void setCurrentDragOverlappingLayout(CellLayout layout) { 2456 if (mDragOverlappingLayout != null) { 2457 mDragOverlappingLayout.setIsDragOverlapping(false); 2458 } 2459 mDragOverlappingLayout = layout; 2460 if (mDragOverlappingLayout != null) { 2461 mDragOverlappingLayout.setIsDragOverlapping(true); 2462 } 2463 invalidate(); 2464 } 2465 2466 void setCurrentDropOverCell(int x, int y) { 2467 if (x != mDragOverX || y != mDragOverY) { 2468 mDragOverX = x; 2469 mDragOverY = y; 2470 setDragMode(DRAG_MODE_NONE); 2471 } 2472 } 2473 2474 void setDragMode(int dragMode) { 2475 if (dragMode != mDragMode) { 2476 if (dragMode == DRAG_MODE_NONE) { 2477 cleanupAddToFolder(); 2478 // We don't want to cancel the re-order alarm every time the target cell changes 2479 // as this feels to slow / unresponsive. 2480 cleanupReorder(false); 2481 cleanupFolderCreation(); 2482 } else if (dragMode == DRAG_MODE_ADD_TO_FOLDER) { 2483 cleanupReorder(true); 2484 cleanupFolderCreation(); 2485 } else if (dragMode == DRAG_MODE_CREATE_FOLDER) { 2486 cleanupAddToFolder(); 2487 cleanupReorder(true); 2488 } else if (dragMode == DRAG_MODE_REORDER) { 2489 cleanupAddToFolder(); 2490 cleanupFolderCreation(); 2491 } 2492 mDragMode = dragMode; 2493 } 2494 } 2495 2496 private void cleanupFolderCreation() { 2497 if (mDragFolderRingAnimator != null) { 2498 mDragFolderRingAnimator.animateToNaturalState(); 2499 } 2500 mFolderCreationAlarm.cancelAlarm(); 2501 } 2502 2503 private void cleanupAddToFolder() { 2504 if (mDragOverFolderIcon != null) { 2505 mDragOverFolderIcon.onDragExit(null); 2506 mDragOverFolderIcon = null; 2507 } 2508 } 2509 2510 private void cleanupReorder(boolean cancelAlarm) { 2511 // Any pending reorders are canceled 2512 if (cancelAlarm) { 2513 mReorderAlarm.cancelAlarm(); 2514 } 2515 mLastReorderX = -1; 2516 mLastReorderY = -1; 2517 } 2518 2519 public DropTarget getDropTargetDelegate(DragObject d) { 2520 return null; 2521 } 2522 2523 /* 2524 * 2525 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2526 * coordinate space. The argument xy is modified with the return result. 2527 * 2528 */ 2529 void mapPointFromSelfToChild(View v, float[] xy) { 2530 mapPointFromSelfToChild(v, xy, null); 2531 } 2532 2533 /* 2534 * 2535 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2536 * coordinate space. The argument xy is modified with the return result. 2537 * 2538 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2539 * computing it itself; we use this to avoid redundant matrix inversions in 2540 * findMatchingPageForDragOver 2541 * 2542 */ 2543 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2544 if (cachedInverseMatrix == null) { 2545 v.getMatrix().invert(mTempInverseMatrix); 2546 cachedInverseMatrix = mTempInverseMatrix; 2547 } 2548 int scrollX = mScrollX; 2549 if (mNextPage != INVALID_PAGE) { 2550 scrollX = mScroller.getFinalX(); 2551 } 2552 xy[0] = xy[0] + scrollX - v.getLeft(); 2553 xy[1] = xy[1] + mScrollY - v.getTop(); 2554 cachedInverseMatrix.mapPoints(xy); 2555 } 2556 2557 /* 2558 * Maps a point from the Workspace's coordinate system to another sibling view's. (Workspace 2559 * covers the full screen) 2560 */ 2561 void mapPointFromSelfToSibling(View v, float[] xy) { 2562 xy[0] = xy[0] - v.getLeft(); 2563 xy[1] = xy[1] - v.getTop(); 2564 } 2565 2566 void mapPointFromSelfToHotseatLayout(Hotseat hotseat, float[] xy) { 2567 xy[0] = xy[0] - hotseat.getLeft() - hotseat.getLayout().getLeft(); 2568 xy[1] = xy[1] - hotseat.getTop() - hotseat.getLayout().getTop(); 2569 } 2570 2571 /* 2572 * 2573 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2574 * the parent View's coordinate space. The argument xy is modified with the return result. 2575 * 2576 */ 2577 void mapPointFromChildToSelf(View v, float[] xy) { 2578 v.getMatrix().mapPoints(xy); 2579 int scrollX = mScrollX; 2580 if (mNextPage != INVALID_PAGE) { 2581 scrollX = mScroller.getFinalX(); 2582 } 2583 xy[0] -= (scrollX - v.getLeft()); 2584 xy[1] -= (mScrollY - v.getTop()); 2585 } 2586 2587 static private float squaredDistance(float[] point1, float[] point2) { 2588 float distanceX = point1[0] - point2[0]; 2589 float distanceY = point2[1] - point2[1]; 2590 return distanceX * distanceX + distanceY * distanceY; 2591 } 2592 2593 /* 2594 * 2595 * Returns true if the passed CellLayout cl overlaps with dragView 2596 * 2597 */ 2598 boolean overlaps(CellLayout cl, DragView dragView, 2599 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2600 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2601 final float[] draggedItemTopLeft = mTempDragCoordinates; 2602 draggedItemTopLeft[0] = dragViewX; 2603 draggedItemTopLeft[1] = dragViewY; 2604 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2605 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2606 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2607 2608 // Transform the dragged item's top left coordinates 2609 // to the CellLayout's local coordinates 2610 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2611 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2612 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2613 2614 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2615 // Transform the dragged item's bottom right coordinates 2616 // to the CellLayout's local coordinates 2617 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2618 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2619 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2620 2621 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2622 float overlap = (overlapRegionRight - overlapRegionLeft) * 2623 (overlapRegionBottom - overlapRegionTop); 2624 if (overlap > 0) { 2625 return true; 2626 } 2627 } 2628 } 2629 return false; 2630 } 2631 2632 /* 2633 * 2634 * This method returns the CellLayout that is currently being dragged to. In order to drag 2635 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2636 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2637 * 2638 * Return null if no CellLayout is currently being dragged over 2639 * 2640 */ 2641 private CellLayout findMatchingPageForDragOver( 2642 DragView dragView, float originX, float originY, boolean exact) { 2643 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2644 // with the item being dragged and then choose the one that's closest to the touch point 2645 final int screenCount = getChildCount(); 2646 CellLayout bestMatchingScreen = null; 2647 float smallestDistSoFar = Float.MAX_VALUE; 2648 2649 for (int i = 0; i < screenCount; i++) { 2650 CellLayout cl = (CellLayout) getChildAt(i); 2651 2652 final float[] touchXy = {originX, originY}; 2653 // Transform the touch coordinates to the CellLayout's local coordinates 2654 // If the touch point is within the bounds of the cell layout, we can return immediately 2655 cl.getMatrix().invert(mTempInverseMatrix); 2656 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2657 2658 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2659 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2660 return cl; 2661 } 2662 2663 if (!exact) { 2664 // Get the center of the cell layout in screen coordinates 2665 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2666 cellLayoutCenter[0] = cl.getWidth()/2; 2667 cellLayoutCenter[1] = cl.getHeight()/2; 2668 mapPointFromChildToSelf(cl, cellLayoutCenter); 2669 2670 touchXy[0] = originX; 2671 touchXy[1] = originY; 2672 2673 // Calculate the distance between the center of the CellLayout 2674 // and the touch point 2675 float dist = squaredDistance(touchXy, cellLayoutCenter); 2676 2677 if (dist < smallestDistSoFar) { 2678 smallestDistSoFar = dist; 2679 bestMatchingScreen = cl; 2680 } 2681 } 2682 } 2683 return bestMatchingScreen; 2684 } 2685 2686 // This is used to compute the visual center of the dragView. This point is then 2687 // used to visualize drop locations and determine where to drop an item. The idea is that 2688 // the visual center represents the user's interpretation of where the item is, and hence 2689 // is the appropriate point to use when determining drop location. 2690 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2691 DragView dragView, float[] recycle) { 2692 float res[]; 2693 if (recycle == null) { 2694 res = new float[2]; 2695 } else { 2696 res = recycle; 2697 } 2698 2699 // First off, the drag view has been shifted in a way that is not represented in the 2700 // x and y values or the x/yOffsets. Here we account for that shift. 2701 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2702 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2703 2704 // These represent the visual top and left of drag view if a dragRect was provided. 2705 // If a dragRect was not provided, then they correspond to the actual view left and 2706 // top, as the dragRect is in that case taken to be the entire dragView. 2707 // R.dimen.dragViewOffsetY. 2708 int left = x - xOffset; 2709 int top = y - yOffset; 2710 2711 // In order to find the visual center, we shift by half the dragRect 2712 res[0] = left + dragView.getDragRegion().width() / 2; 2713 res[1] = top + dragView.getDragRegion().height() / 2; 2714 2715 return res; 2716 } 2717 2718 private boolean isDragWidget(DragObject d) { 2719 return (d.dragInfo instanceof LauncherAppWidgetInfo || 2720 d.dragInfo instanceof PendingAddWidgetInfo); 2721 } 2722 private boolean isExternalDragWidget(DragObject d) { 2723 return d.dragSource != this && isDragWidget(d); 2724 } 2725 2726 public void onDragOver(DragObject d) { 2727 // Skip drag over events while we are dragging over side pages 2728 if (mInScrollArea || mIsSwitchingState || mState == State.SMALL) return; 2729 2730 Rect r = new Rect(); 2731 CellLayout layout = null; 2732 ItemInfo item = (ItemInfo) d.dragInfo; 2733 2734 // Ensure that we have proper spans for the item that we are dropping 2735 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2736 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2737 d.dragView, mDragViewVisualCenter); 2738 2739 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2740 // Identify whether we have dragged over a side page 2741 if (isSmall()) { 2742 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 2743 mLauncher.getHotseat().getHitRect(r); 2744 if (r.contains(d.x, d.y)) { 2745 layout = mLauncher.getHotseat().getLayout(); 2746 } 2747 } 2748 if (layout == null) { 2749 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false); 2750 } 2751 if (layout != mDragTargetLayout) { 2752 2753 setCurrentDropLayout(layout); 2754 setCurrentDragOverlappingLayout(layout); 2755 2756 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 2757 if (isInSpringLoadedMode) { 2758 if (mLauncher.isHotseatLayout(layout)) { 2759 mSpringLoadedDragController.cancel(); 2760 } else { 2761 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2762 } 2763 } 2764 } 2765 } else { 2766 // Test to see if we are over the hotseat otherwise just use the current page 2767 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 2768 mLauncher.getHotseat().getHitRect(r); 2769 if (r.contains(d.x, d.y)) { 2770 layout = mLauncher.getHotseat().getLayout(); 2771 } 2772 } 2773 if (layout == null) { 2774 layout = getCurrentDropLayout(); 2775 } 2776 if (layout != mDragTargetLayout) { 2777 setCurrentDropLayout(layout); 2778 setCurrentDragOverlappingLayout(layout); 2779 } 2780 } 2781 2782 // Handle the drag over 2783 if (mDragTargetLayout != null) { 2784 // We want the point to be mapped to the dragTarget. 2785 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2786 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2787 } else { 2788 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2789 } 2790 2791 ItemInfo info = (ItemInfo) d.dragInfo; 2792 2793 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2794 (int) mDragViewVisualCenter[1], 1, 1, mDragTargetLayout, mTargetCell); 2795 2796 setCurrentDropOverCell(mTargetCell[0], mTargetCell[1]); 2797 2798 float targetCellDistance = mDragTargetLayout.getDistanceFromCell( 2799 mDragViewVisualCenter[0], mDragViewVisualCenter[1], mTargetCell); 2800 2801 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2802 mTargetCell[1]); 2803 2804 manageFolderFeedback(info, mDragTargetLayout, mTargetCell, 2805 targetCellDistance, dragOverView); 2806 2807 int minSpanX = item.spanX; 2808 int minSpanY = item.spanY; 2809 if (item.minSpanX > 0 && item.minSpanY > 0) { 2810 minSpanX = item.minSpanX; 2811 minSpanY = item.minSpanY; 2812 } 2813 2814 int[] reorderPosition = new int[2]; 2815 reorderPosition = findNearestArea((int) mDragViewVisualCenter[0], 2816 (int) mDragViewVisualCenter[1], item.spanX, item.spanY, mDragTargetLayout, 2817 reorderPosition); 2818 2819 boolean nearestDropOccupied = mDragTargetLayout.isNearestDropLocationOccupied((int) 2820 mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], item.spanX, 2821 item.spanY, child, mTargetCell); 2822 2823 if (!nearestDropOccupied) { 2824 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2825 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2826 mTargetCell[0], mTargetCell[1], item.spanX, item.spanY, false, 2827 d.dragView.getDragVisualizeOffset(), d.dragView.getDragRegion()); 2828 } else if ((mDragMode == DRAG_MODE_NONE || mDragMode == DRAG_MODE_REORDER) 2829 && !mReorderAlarm.alarmPending() && (mLastReorderX != reorderPosition[0] || 2830 mLastReorderY != reorderPosition[1])) { 2831 // Otherwise, if we aren't adding to or creating a folder and there's no pending 2832 // reorder, then we schedule a reorder 2833 ReorderAlarmListener listener = new ReorderAlarmListener(mDragViewVisualCenter, 2834 minSpanX, minSpanY, item.spanX, item.spanY, d.dragView, child); 2835 mReorderAlarm.setOnAlarmListener(listener); 2836 mReorderAlarm.setAlarm(REORDER_TIMEOUT); 2837 } 2838 2839 if (mDragMode == DRAG_MODE_CREATE_FOLDER || mDragMode == DRAG_MODE_ADD_TO_FOLDER || 2840 !nearestDropOccupied) { 2841 if (mDragTargetLayout != null) { 2842 mDragTargetLayout.revertTempState(); 2843 } 2844 } 2845 } 2846 } 2847 2848 private void manageFolderFeedback(ItemInfo info, CellLayout targetLayout, 2849 int[] targetCell, float distance, View dragOverView) { 2850 boolean userFolderPending = willCreateUserFolder(info, targetLayout, targetCell, distance, 2851 false); 2852 2853 if (mDragMode == DRAG_MODE_NONE && userFolderPending && 2854 !mFolderCreationAlarm.alarmPending()) { 2855 mFolderCreationAlarm.setOnAlarmListener(new 2856 FolderCreationAlarmListener(targetLayout, targetCell[0], targetCell[1])); 2857 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2858 return; 2859 } 2860 2861 boolean willAddToFolder = 2862 willAddToExistingUserFolder(info, targetLayout, targetCell, distance); 2863 2864 if (willAddToFolder && mDragMode == DRAG_MODE_NONE) { 2865 mDragOverFolderIcon = ((FolderIcon) dragOverView); 2866 mAddToExistingFolderOnDrop = true; 2867 mDragOverFolderIcon.onDragEnter(info); 2868 if (targetLayout != null) { 2869 targetLayout.clearDragOutlines(); 2870 } 2871 setDragMode(DRAG_MODE_ADD_TO_FOLDER); 2872 return; 2873 } 2874 2875 if (mDragMode == DRAG_MODE_ADD_TO_FOLDER && !willAddToFolder) { 2876 setDragMode(DRAG_MODE_NONE); 2877 } 2878 if (mDragMode == DRAG_MODE_CREATE_FOLDER && !userFolderPending) { 2879 setDragMode(DRAG_MODE_NONE); 2880 } 2881 2882 return; 2883 } 2884 2885 class FolderCreationAlarmListener implements OnAlarmListener { 2886 CellLayout layout; 2887 int cellX; 2888 int cellY; 2889 2890 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 2891 this.layout = layout; 2892 this.cellX = cellX; 2893 this.cellY = cellY; 2894 } 2895 2896 public void onAlarm(Alarm alarm) { 2897 if (mDragFolderRingAnimator == null) { 2898 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 2899 } 2900 mDragFolderRingAnimator.setCell(cellX, cellY); 2901 mDragFolderRingAnimator.setCellLayout(layout); 2902 mDragFolderRingAnimator.animateToAcceptState(); 2903 layout.showFolderAccept(mDragFolderRingAnimator); 2904 layout.clearDragOutlines(); 2905 setDragMode(DRAG_MODE_CREATE_FOLDER); 2906 } 2907 } 2908 2909 class ReorderAlarmListener implements OnAlarmListener { 2910 float[] dragViewCenter; 2911 int minSpanX, minSpanY, spanX, spanY; 2912 DragView dragView; 2913 View child; 2914 2915 public ReorderAlarmListener(float[] dragViewCenter, int minSpanX, int minSpanY, int spanX, 2916 int spanY, DragView dragView, View child) { 2917 this.dragViewCenter = dragViewCenter; 2918 this.minSpanX = minSpanX; 2919 this.minSpanY = minSpanY; 2920 this.spanX = spanX; 2921 this.spanY = spanY; 2922 this.child = child; 2923 this.dragView = dragView; 2924 } 2925 2926 public void onAlarm(Alarm alarm) { 2927 int[] resultSpan = new int[2]; 2928 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2929 (int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell); 2930 mLastReorderX = mTargetCell[0]; 2931 mLastReorderY = mTargetCell[1]; 2932 2933 mTargetCell = mDragTargetLayout.createArea((int) mDragViewVisualCenter[0], 2934 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2935 child, mTargetCell, resultSpan, CellLayout.MODE_DRAG_OVER); 2936 2937 if (mTargetCell[0] < 0 || mTargetCell[1] < 0) { 2938 mDragTargetLayout.revertTempState(); 2939 } else { 2940 setDragMode(DRAG_MODE_REORDER); 2941 } 2942 2943 boolean resize = resultSpan[0] != spanX || resultSpan[1] != spanY; 2944 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2945 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2946 mTargetCell[0], mTargetCell[1], resultSpan[0], resultSpan[1], resize, 2947 dragView.getDragVisualizeOffset(), dragView.getDragRegion()); 2948 } 2949 } 2950 2951 @Override 2952 public void getHitRect(Rect outRect) { 2953 // We want the workspace to have the whole area of the display (it will find the correct 2954 // cell layout to drop to in the existing drag/drop logic. 2955 outRect.set(0, 0, mDisplaySize.x, mDisplaySize.y); 2956 } 2957 2958 /** 2959 * Add the item specified by dragInfo to the given layout. 2960 * @return true if successful 2961 */ 2962 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2963 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2964 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2965 return true; 2966 } 2967 mLauncher.showOutOfSpaceMessage(mLauncher.isHotseatLayout(layout)); 2968 return false; 2969 } 2970 2971 private void onDropExternal(int[] touchXY, Object dragInfo, 2972 CellLayout cellLayout, boolean insertAtFirst) { 2973 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 2974 } 2975 2976 /** 2977 * Drop an item that didn't originate on one of the workspace screens. 2978 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2979 * come from another app altogether. 2980 * 2981 * NOTE: This can also be called when we are outside of a drag event, when we want 2982 * to add an item to one of the workspace screens. 2983 */ 2984 private void onDropExternal(final int[] touchXY, final Object dragInfo, 2985 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 2986 final Runnable exitSpringLoadedRunnable = new Runnable() { 2987 @Override 2988 public void run() { 2989 mLauncher.exitSpringLoadedDragModeDelayed(true, false, null); 2990 } 2991 }; 2992 2993 ItemInfo info = (ItemInfo) dragInfo; 2994 int spanX = info.spanX; 2995 int spanY = info.spanY; 2996 if (mDragInfo != null) { 2997 spanX = mDragInfo.spanX; 2998 spanY = mDragInfo.spanY; 2999 } 3000 3001 final long container = mLauncher.isHotseatLayout(cellLayout) ? 3002 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 3003 LauncherSettings.Favorites.CONTAINER_DESKTOP; 3004 final int screen = indexOfChild(cellLayout); 3005 if (!mLauncher.isHotseatLayout(cellLayout) && screen != mCurrentPage 3006 && mState != State.SPRING_LOADED) { 3007 snapToPage(screen); 3008 } 3009 3010 if (info instanceof PendingAddItemInfo) { 3011 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 3012 3013 boolean findNearestVacantCell = true; 3014 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 3015 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3016 cellLayout, mTargetCell); 3017 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3018 mDragViewVisualCenter[1], mTargetCell); 3019 if (willCreateUserFolder((ItemInfo) d.dragInfo, cellLayout, mTargetCell, 3020 distance, true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 3021 cellLayout, mTargetCell, distance)) { 3022 findNearestVacantCell = false; 3023 } 3024 } 3025 3026 final ItemInfo item = (ItemInfo) d.dragInfo; 3027 if (findNearestVacantCell) { 3028 int minSpanX = item.spanX; 3029 int minSpanY = item.spanY; 3030 if (item.minSpanX > 0 && item.minSpanY > 0) { 3031 minSpanX = item.minSpanX; 3032 minSpanY = item.minSpanY; 3033 } 3034 int[] resultSpan = new int[2]; 3035 mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], 3036 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, info.spanX, info.spanY, 3037 null, mTargetCell, resultSpan, CellLayout.MODE_ON_DROP_EXTERNAL); 3038 item.spanX = resultSpan[0]; 3039 item.spanY = resultSpan[1]; 3040 } 3041 3042 Runnable onAnimationCompleteRunnable = new Runnable() { 3043 @Override 3044 public void run() { 3045 // When dragging and dropping from customization tray, we deal with creating 3046 // widgets/shortcuts/folders in a slightly different way 3047 switch (pendingInfo.itemType) { 3048 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 3049 int span[] = new int[2]; 3050 span[0] = item.spanX; 3051 span[1] = item.spanY; 3052 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, 3053 container, screen, mTargetCell, span, null); 3054 break; 3055 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3056 mLauncher.processShortcutFromDrop(pendingInfo.componentName, 3057 container, screen, mTargetCell, null); 3058 break; 3059 default: 3060 throw new IllegalStateException("Unknown item type: " + 3061 pendingInfo.itemType); 3062 } 3063 } 3064 }; 3065 View finalView = pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET 3066 ? ((PendingAddWidgetInfo) pendingInfo).boundWidget : null; 3067 int animationStyle = ANIMATE_INTO_POSITION_AND_DISAPPEAR; 3068 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && 3069 ((PendingAddWidgetInfo) pendingInfo).info.configure != null) { 3070 animationStyle = ANIMATE_INTO_POSITION_AND_REMAIN; 3071 } 3072 animateWidgetDrop(info, cellLayout, d.dragView, onAnimationCompleteRunnable, 3073 animationStyle, finalView, true); 3074 } else { 3075 // This is for other drag/drop cases, like dragging from All Apps 3076 View view = null; 3077 3078 switch (info.itemType) { 3079 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 3080 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3081 if (info.container == NO_ID && info instanceof ApplicationInfo) { 3082 // Came from all apps -- make a copy 3083 info = new ShortcutInfo((ApplicationInfo) info); 3084 } 3085 view = mLauncher.createShortcut(R.layout.application, cellLayout, 3086 (ShortcutInfo) info); 3087 break; 3088 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 3089 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 3090 (FolderInfo) info, mIconCache); 3091 break; 3092 default: 3093 throw new IllegalStateException("Unknown item type: " + info.itemType); 3094 } 3095 3096 // First we find the cell nearest to point at which the item is 3097 // dropped, without any consideration to whether there is an item there. 3098 if (touchXY != null) { 3099 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3100 cellLayout, mTargetCell); 3101 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3102 mDragViewVisualCenter[1], mTargetCell); 3103 d.postAnimationRunnable = exitSpringLoadedRunnable; 3104 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, distance, 3105 true, d.dragView, d.postAnimationRunnable)) { 3106 return; 3107 } 3108 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, distance, d, 3109 true)) { 3110 return; 3111 } 3112 } 3113 3114 if (touchXY != null) { 3115 // when dragging and dropping, just find the closest free spot 3116 mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], 3117 (int) mDragViewVisualCenter[1], 1, 1, 1, 1, 3118 null, mTargetCell, null, CellLayout.MODE_ON_DROP_EXTERNAL); 3119 } else { 3120 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3121 } 3122 addInScreen(view, container, screen, mTargetCell[0], mTargetCell[1], info.spanX, 3123 info.spanY, insertAtFirst); 3124 cellLayout.onDropChild(view); 3125 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 3126 cellLayout.getShortcutsAndWidgets().measureChild(view); 3127 3128 3129 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, 3130 lp.cellX, lp.cellY); 3131 3132 if (d.dragView != null) { 3133 // We wrap the animation call in the temporary set and reset of the current 3134 // cellLayout to its final transform -- this means we animate the drag view to 3135 // the correct final location. 3136 setFinalTransitionTransform(cellLayout); 3137 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 3138 exitSpringLoadedRunnable); 3139 resetTransitionTransform(cellLayout); 3140 } 3141 } 3142 } 3143 3144 public Bitmap createWidgetBitmap(ItemInfo widgetInfo, View layout) { 3145 int[] unScaledSize = mLauncher.getWorkspace().estimateItemSize(widgetInfo.spanX, 3146 widgetInfo.spanY, widgetInfo, false); 3147 int visibility = layout.getVisibility(); 3148 layout.setVisibility(VISIBLE); 3149 3150 int width = MeasureSpec.makeMeasureSpec(unScaledSize[0], MeasureSpec.EXACTLY); 3151 int height = MeasureSpec.makeMeasureSpec(unScaledSize[1], MeasureSpec.EXACTLY); 3152 Bitmap b = Bitmap.createBitmap(unScaledSize[0], unScaledSize[1], 3153 Bitmap.Config.ARGB_8888); 3154 Canvas c = new Canvas(b); 3155 3156 layout.measure(width, height); 3157 layout.layout(0, 0, unScaledSize[0], unScaledSize[1]); 3158 layout.draw(c); 3159 c.setBitmap(null); 3160 layout.setVisibility(visibility); 3161 return b; 3162 } 3163 3164 private void getFinalPositionForDropAnimation(int[] loc, float[] scaleXY, 3165 DragView dragView, CellLayout layout, ItemInfo info, int[] targetCell, View finalView, 3166 boolean external) { 3167 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 3168 // location and size on the home screen. 3169 int spanX = info.spanX; 3170 int spanY = info.spanY; 3171 3172 Rect r = estimateItemPosition(layout, info, targetCell[0], targetCell[1], spanX, spanY); 3173 loc[0] = r.left; 3174 loc[1] = r.top; 3175 3176 setFinalTransitionTransform(layout); 3177 float cellLayoutScale = 3178 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(layout, loc); 3179 resetTransitionTransform(layout); 3180 float dragViewScaleX = (1.0f * r.width()) / dragView.getMeasuredWidth(); 3181 float dragViewScaleY = (1.0f * r.height()) / dragView.getMeasuredHeight(); 3182 3183 // The animation will scale the dragView about its center, so we need to center about 3184 // the final location. 3185 loc[0] -= (dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 3186 loc[1] -= (dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 3187 3188 scaleXY[0] = dragViewScaleX * cellLayoutScale; 3189 scaleXY[1] = dragViewScaleY * cellLayoutScale; 3190 } 3191 3192 public void animateWidgetDrop(ItemInfo info, CellLayout cellLayout, DragView dragView, 3193 final Runnable onCompleteRunnable, int animationType, final View finalView, 3194 boolean external) { 3195 Rect from = new Rect(); 3196 mLauncher.getDragLayer().getViewRectRelativeToSelf(dragView, from); 3197 3198 int[] finalPos = new int[2]; 3199 float scaleXY[] = new float[2]; 3200 getFinalPositionForDropAnimation(finalPos, scaleXY, dragView, cellLayout, info, mTargetCell, 3201 finalView, external); 3202 3203 Resources res = mLauncher.getResources(); 3204 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration) - 200; 3205 3206 // In the case where we've prebound the widget, we remove it from the DragLayer 3207 if (finalView instanceof AppWidgetHostView && external) { 3208 mLauncher.getDragLayer().removeView(finalView); 3209 } 3210 if ((animationType == ANIMATE_INTO_POSITION_AND_RESIZE || external) && finalView != null) { 3211 Bitmap crossFadeBitmap = createWidgetBitmap(info, finalView); 3212 dragView.setCrossFadeBitmap(crossFadeBitmap); 3213 dragView.crossFade((int) (duration * 0.8f)); 3214 } else if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && external) { 3215 scaleXY[0] = scaleXY[1] = Math.min(scaleXY[0], scaleXY[1]); 3216 } 3217 3218 DragLayer dragLayer = mLauncher.getDragLayer(); 3219 if (animationType == CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION) { 3220 mLauncher.getDragLayer().animateViewIntoPosition(dragView, finalPos, 0f, 0.1f, 0.1f, 3221 DragLayer.ANIMATION_END_DISAPPEAR, onCompleteRunnable, duration); 3222 } else { 3223 int endStyle; 3224 if (animationType == ANIMATE_INTO_POSITION_AND_REMAIN) { 3225 endStyle = DragLayer.ANIMATION_END_REMAIN_VISIBLE; 3226 } else { 3227 endStyle = DragLayer.ANIMATION_END_DISAPPEAR;; 3228 } 3229 3230 Runnable onComplete = new Runnable() { 3231 @Override 3232 public void run() { 3233 if (finalView != null) { 3234 finalView.setVisibility(VISIBLE); 3235 } 3236 if (onCompleteRunnable != null) { 3237 onCompleteRunnable.run(); 3238 } 3239 } 3240 }; 3241 dragLayer.animateViewIntoPosition(dragView, from.left, from.top, finalPos[0], 3242 finalPos[1], 1, 1, 1, scaleXY[0], scaleXY[1], onComplete, endStyle, 3243 duration, this); 3244 } 3245 } 3246 3247 public void setFinalTransitionTransform(CellLayout layout) { 3248 if (isSwitchingState()) { 3249 int index = indexOfChild(layout); 3250 mCurrentScaleX = layout.getScaleX(); 3251 mCurrentScaleY = layout.getScaleY(); 3252 mCurrentTranslationX = layout.getTranslationX(); 3253 mCurrentTranslationY = layout.getTranslationY(); 3254 mCurrentRotationY = layout.getRotationY(); 3255 layout.setScaleX(mNewScaleXs[index]); 3256 layout.setScaleY(mNewScaleYs[index]); 3257 layout.setTranslationX(mNewTranslationXs[index]); 3258 layout.setTranslationY(mNewTranslationYs[index]); 3259 layout.setRotationY(mNewRotationYs[index]); 3260 } 3261 } 3262 public void resetTransitionTransform(CellLayout layout) { 3263 if (isSwitchingState()) { 3264 mCurrentScaleX = layout.getScaleX(); 3265 mCurrentScaleY = layout.getScaleY(); 3266 mCurrentTranslationX = layout.getTranslationX(); 3267 mCurrentTranslationY = layout.getTranslationY(); 3268 mCurrentRotationY = layout.getRotationY(); 3269 layout.setScaleX(mCurrentScaleX); 3270 layout.setScaleY(mCurrentScaleY); 3271 layout.setTranslationX(mCurrentTranslationX); 3272 layout.setTranslationY(mCurrentTranslationY); 3273 layout.setRotationY(mCurrentRotationY); 3274 } 3275 } 3276 3277 /** 3278 * Return the current {@link CellLayout}, correctly picking the destination 3279 * screen while a scroll is in progress. 3280 */ 3281 public CellLayout getCurrentDropLayout() { 3282 return (CellLayout) getChildAt(mNextPage == INVALID_PAGE ? mCurrentPage : mNextPage); 3283 } 3284 3285 /** 3286 * Return the current CellInfo describing our current drag; this method exists 3287 * so that Launcher can sync this object with the correct info when the activity is created/ 3288 * destroyed 3289 * 3290 */ 3291 public CellLayout.CellInfo getDragInfo() { 3292 return mDragInfo; 3293 } 3294 3295 /** 3296 * Calculate the nearest cell where the given object would be dropped. 3297 * 3298 * pixelX and pixelY should be in the coordinate system of layout 3299 */ 3300 private int[] findNearestArea(int pixelX, int pixelY, 3301 int spanX, int spanY, CellLayout layout, int[] recycle) { 3302 return layout.findNearestArea( 3303 pixelX, pixelY, spanX, spanY, recycle); 3304 } 3305 3306 void setup(DragController dragController) { 3307 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3308 mDragController = dragController; 3309 3310 // hardware layers on children are enabled on startup, but should be disabled until 3311 // needed 3312 updateChildrenLayersEnabled(); 3313 setWallpaperDimension(); 3314 } 3315 3316 /** 3317 * Called at the end of a drag which originated on the workspace. 3318 */ 3319 public void onDropCompleted(View target, DragObject d, boolean isFlingToDelete, 3320 boolean success) { 3321 if (success) { 3322 if (target != this) { 3323 if (mDragInfo != null) { 3324 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 3325 if (mDragInfo.cell instanceof DropTarget) { 3326 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 3327 } 3328 } 3329 } 3330 } else if (mDragInfo != null) { 3331 CellLayout cellLayout; 3332 if (mLauncher.isHotseatLayout(target)) { 3333 cellLayout = mLauncher.getHotseat().getLayout(); 3334 } else { 3335 cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3336 } 3337 cellLayout.onDropChild(mDragInfo.cell); 3338 } 3339 if (d.cancelled && mDragInfo.cell != null) { 3340 mDragInfo.cell.setVisibility(VISIBLE); 3341 } 3342 mDragOutline = null; 3343 mDragInfo = null; 3344 3345 // Hide the scrolling indicator after you pick up an item 3346 hideScrollingIndicator(false); 3347 } 3348 3349 void updateItemLocationsInDatabase(CellLayout cl) { 3350 int count = cl.getShortcutsAndWidgets().getChildCount(); 3351 3352 int screen = indexOfChild(cl); 3353 int container = Favorites.CONTAINER_DESKTOP; 3354 3355 if (mLauncher.isHotseatLayout(cl)) { 3356 screen = -1; 3357 container = Favorites.CONTAINER_HOTSEAT; 3358 } 3359 3360 for (int i = 0; i < count; i++) { 3361 View v = cl.getShortcutsAndWidgets().getChildAt(i); 3362 ItemInfo info = (ItemInfo) v.getTag(); 3363 // Null check required as the AllApps button doesn't have an item info 3364 if (info != null) { 3365 LauncherModel.modifyItemInDatabase(mLauncher, info, container, screen, info.cellX, 3366 info.cellY, info.spanX, info.spanY); 3367 } 3368 } 3369 } 3370 3371 @Override 3372 public boolean supportsFlingToDelete() { 3373 return true; 3374 } 3375 3376 @Override 3377 public void onFlingToDelete(DragObject d, int x, int y, PointF vec) { 3378 // Do nothing 3379 } 3380 3381 @Override 3382 public void onFlingToDeleteCompleted() { 3383 // Do nothing 3384 } 3385 3386 public boolean isDropEnabled() { 3387 return true; 3388 } 3389 3390 @Override 3391 protected void onRestoreInstanceState(Parcelable state) { 3392 super.onRestoreInstanceState(state); 3393 Launcher.setScreen(mCurrentPage); 3394 } 3395 3396 @Override 3397 public void scrollLeft() { 3398 if (!isSmall() && !mIsSwitchingState) { 3399 super.scrollLeft(); 3400 } 3401 Folder openFolder = getOpenFolder(); 3402 if (openFolder != null) { 3403 openFolder.completeDragExit(); 3404 } 3405 } 3406 3407 @Override 3408 public void scrollRight() { 3409 if (!isSmall() && !mIsSwitchingState) { 3410 super.scrollRight(); 3411 } 3412 Folder openFolder = getOpenFolder(); 3413 if (openFolder != null) { 3414 openFolder.completeDragExit(); 3415 } 3416 } 3417 3418 @Override 3419 public boolean onEnterScrollArea(int x, int y, int direction) { 3420 // Ignore the scroll area if we are dragging over the hot seat 3421 boolean isPortrait = !LauncherApplication.isScreenLandscape(getContext()); 3422 if (mLauncher.getHotseat() != null && isPortrait) { 3423 Rect r = new Rect(); 3424 mLauncher.getHotseat().getHitRect(r); 3425 if (r.contains(x, y)) { 3426 return false; 3427 } 3428 } 3429 3430 boolean result = false; 3431 if (!isSmall() && !mIsSwitchingState) { 3432 mInScrollArea = true; 3433 3434 final int page = (mNextPage != INVALID_PAGE ? mNextPage : mCurrentPage) + 3435 (direction == DragController.SCROLL_LEFT ? -1 : 1); 3436 3437 // We always want to exit the current layout to ensure parity of enter / exit 3438 setCurrentDropLayout(null); 3439 3440 if (0 <= page && page < getChildCount()) { 3441 CellLayout layout = (CellLayout) getChildAt(page); 3442 setCurrentDragOverlappingLayout(layout); 3443 3444 // Workspace is responsible for drawing the edge glow on adjacent pages, 3445 // so we need to redraw the workspace when this may have changed. 3446 invalidate(); 3447 result = true; 3448 } 3449 } 3450 return result; 3451 } 3452 3453 @Override 3454 public boolean onExitScrollArea() { 3455 boolean result = false; 3456 if (mInScrollArea) { 3457 invalidate(); 3458 CellLayout layout = getCurrentDropLayout(); 3459 setCurrentDropLayout(layout); 3460 setCurrentDragOverlappingLayout(layout); 3461 3462 result = true; 3463 mInScrollArea = false; 3464 } 3465 return result; 3466 } 3467 3468 private void onResetScrollArea() { 3469 setCurrentDragOverlappingLayout(null); 3470 mInScrollArea = false; 3471 } 3472 3473 /** 3474 * Returns a specific CellLayout 3475 */ 3476 CellLayout getParentCellLayoutForView(View v) { 3477 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3478 for (CellLayout layout : layouts) { 3479 if (layout.getShortcutsAndWidgets().indexOfChild(v) > -1) { 3480 return layout; 3481 } 3482 } 3483 return null; 3484 } 3485 3486 /** 3487 * Returns a list of all the CellLayouts in the workspace. 3488 */ 3489 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3490 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3491 int screenCount = getChildCount(); 3492 for (int screen = 0; screen < screenCount; screen++) { 3493 layouts.add(((CellLayout) getChildAt(screen))); 3494 } 3495 if (mLauncher.getHotseat() != null) { 3496 layouts.add(mLauncher.getHotseat().getLayout()); 3497 } 3498 return layouts; 3499 } 3500 3501 /** 3502 * We should only use this to search for specific children. Do not use this method to modify 3503 * ShortcutsAndWidgetsContainer directly. Includes ShortcutAndWidgetContainers from 3504 * the hotseat and workspace pages 3505 */ 3506 ArrayList<ShortcutAndWidgetContainer> getAllShortcutAndWidgetContainers() { 3507 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3508 new ArrayList<ShortcutAndWidgetContainer>(); 3509 int screenCount = getChildCount(); 3510 for (int screen = 0; screen < screenCount; screen++) { 3511 childrenLayouts.add(((CellLayout) getChildAt(screen)).getShortcutsAndWidgets()); 3512 } 3513 if (mLauncher.getHotseat() != null) { 3514 childrenLayouts.add(mLauncher.getHotseat().getLayout().getShortcutsAndWidgets()); 3515 } 3516 return childrenLayouts; 3517 } 3518 3519 public Folder getFolderForTag(Object tag) { 3520 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3521 getAllShortcutAndWidgetContainers(); 3522 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3523 int count = layout.getChildCount(); 3524 for (int i = 0; i < count; i++) { 3525 View child = layout.getChildAt(i); 3526 if (child instanceof Folder) { 3527 Folder f = (Folder) child; 3528 if (f.getInfo() == tag && f.getInfo().opened) { 3529 return f; 3530 } 3531 } 3532 } 3533 } 3534 return null; 3535 } 3536 3537 public View getViewForTag(Object tag) { 3538 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3539 getAllShortcutAndWidgetContainers(); 3540 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3541 int count = layout.getChildCount(); 3542 for (int i = 0; i < count; i++) { 3543 View child = layout.getChildAt(i); 3544 if (child.getTag() == tag) { 3545 return child; 3546 } 3547 } 3548 } 3549 return null; 3550 } 3551 3552 void clearDropTargets() { 3553 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3554 getAllShortcutAndWidgetContainers(); 3555 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3556 int childCount = layout.getChildCount(); 3557 for (int j = 0; j < childCount; j++) { 3558 View v = layout.getChildAt(j); 3559 if (v instanceof DropTarget) { 3560 mDragController.removeDropTarget((DropTarget) v); 3561 } 3562 } 3563 } 3564 } 3565 3566 void removeItems(final ArrayList<ApplicationInfo> apps) { 3567 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3568 3569 final HashSet<String> packageNames = new HashSet<String>(); 3570 final int appCount = apps.size(); 3571 for (int i = 0; i < appCount; i++) { 3572 packageNames.add(apps.get(i).componentName.getPackageName()); 3573 } 3574 3575 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3576 for (final CellLayout layoutParent: cellLayouts) { 3577 final ViewGroup layout = layoutParent.getShortcutsAndWidgets(); 3578 3579 // Avoid ANRs by treating each screen separately 3580 post(new Runnable() { 3581 public void run() { 3582 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3583 childrenToRemove.clear(); 3584 3585 int childCount = layout.getChildCount(); 3586 for (int j = 0; j < childCount; j++) { 3587 final View view = layout.getChildAt(j); 3588 Object tag = view.getTag(); 3589 3590 if (tag instanceof ShortcutInfo) { 3591 final ShortcutInfo info = (ShortcutInfo) tag; 3592 final Intent intent = info.intent; 3593 final ComponentName name = intent.getComponent(); 3594 3595 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3596 for (String packageName: packageNames) { 3597 if (packageName.equals(name.getPackageName())) { 3598 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3599 childrenToRemove.add(view); 3600 } 3601 } 3602 } 3603 } else if (tag instanceof FolderInfo) { 3604 final FolderInfo info = (FolderInfo) tag; 3605 final ArrayList<ShortcutInfo> contents = info.contents; 3606 final int contentsCount = contents.size(); 3607 final ArrayList<ShortcutInfo> appsToRemoveFromFolder = 3608 new ArrayList<ShortcutInfo>(); 3609 3610 for (int k = 0; k < contentsCount; k++) { 3611 final ShortcutInfo appInfo = contents.get(k); 3612 final Intent intent = appInfo.intent; 3613 final ComponentName name = intent.getComponent(); 3614 3615 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3616 for (String packageName: packageNames) { 3617 if (packageName.equals(name.getPackageName())) { 3618 appsToRemoveFromFolder.add(appInfo); 3619 } 3620 } 3621 } 3622 } 3623 for (ShortcutInfo item: appsToRemoveFromFolder) { 3624 info.remove(item); 3625 LauncherModel.deleteItemFromDatabase(mLauncher, item); 3626 } 3627 } else if (tag instanceof LauncherAppWidgetInfo) { 3628 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3629 final AppWidgetProviderInfo provider = 3630 widgets.getAppWidgetInfo(info.appWidgetId); 3631 if (provider != null) { 3632 for (String packageName: packageNames) { 3633 if (packageName.equals(provider.provider.getPackageName())) { 3634 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3635 childrenToRemove.add(view); 3636 } 3637 } 3638 } 3639 } 3640 } 3641 3642 childCount = childrenToRemove.size(); 3643 for (int j = 0; j < childCount; j++) { 3644 View child = childrenToRemove.get(j); 3645 // Note: We can not remove the view directly from CellLayoutChildren as this 3646 // does not re-mark the spaces as unoccupied. 3647 layoutParent.removeViewInLayout(child); 3648 if (child instanceof DropTarget) { 3649 mDragController.removeDropTarget((DropTarget)child); 3650 } 3651 } 3652 3653 if (childCount > 0) { 3654 layout.requestLayout(); 3655 layout.invalidate(); 3656 } 3657 } 3658 }); 3659 } 3660 } 3661 3662 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3663 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = getAllShortcutAndWidgetContainers(); 3664 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3665 int childCount = layout.getChildCount(); 3666 for (int j = 0; j < childCount; j++) { 3667 final View view = layout.getChildAt(j); 3668 Object tag = view.getTag(); 3669 if (tag instanceof ShortcutInfo) { 3670 ShortcutInfo info = (ShortcutInfo) tag; 3671 // We need to check for ACTION_MAIN otherwise getComponent() might 3672 // return null for some shortcuts (for instance, for shortcuts to 3673 // web pages.) 3674 final Intent intent = info.intent; 3675 final ComponentName name = intent.getComponent(); 3676 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3677 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3678 final int appCount = apps.size(); 3679 for (int k = 0; k < appCount; k++) { 3680 ApplicationInfo app = apps.get(k); 3681 if (app.componentName.equals(name)) { 3682 BubbleTextView shortcut = (BubbleTextView) view; 3683 info.updateIcon(mIconCache); 3684 info.title = app.title.toString(); 3685 shortcut.applyFromShortcutInfo(info, mIconCache); 3686 } 3687 } 3688 } 3689 } 3690 } 3691 } 3692 } 3693 3694 void moveToDefaultScreen(boolean animate) { 3695 if (!isSmall()) { 3696 if (animate) { 3697 snapToPage(mDefaultPage); 3698 } else { 3699 setCurrentPage(mDefaultPage); 3700 } 3701 } 3702 getChildAt(mDefaultPage).requestFocus(); 3703 } 3704 3705 @Override 3706 public void syncPages() { 3707 } 3708 3709 @Override 3710 public void syncPageItems(int page, boolean immediate) { 3711 } 3712 3713 @Override 3714 protected String getCurrentPageDescription() { 3715 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 3716 return String.format(mContext.getString(R.string.workspace_scroll_format), 3717 page + 1, getChildCount()); 3718 } 3719 3720 public void getLocationInDragLayer(int[] loc) { 3721 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 3722 } 3723 3724 void setFadeForOverScroll(float fade) { 3725 if (!isScrollingIndicatorEnabled()) return; 3726 3727 mOverscrollFade = fade; 3728 float reducedFade = 0.5f + 0.5f * (1 - fade); 3729 final ViewGroup parent = (ViewGroup) getParent(); 3730 final ImageView qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3731 final ImageView dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3732 final View scrollIndicator = getScrollingIndicator(); 3733 3734 cancelScrollingIndicatorAnimations(); 3735 if (qsbDivider != null) qsbDivider.setAlpha(reducedFade); 3736 if (dockDivider != null) dockDivider.setAlpha(reducedFade); 3737 scrollIndicator.setAlpha(1 - fade); 3738 } 3739} 3740