Workspace.java revision a35e35ae0ac2391b8928eb15bf91274aea96b115
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, ViewGroup.OnHierarchyChangeListener { 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 = 2; 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 setOnHierarchyChangeListener(this); 326 327 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 328 setHapticFeedbackEnabled(false); 329 330 mLauncher = (Launcher) context; 331 initWorkspace(); 332 333 // Disable multitouch across the workspace/all apps/customize tray 334 setMotionEventSplittingEnabled(true); 335 } 336 337 // estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each 338 // dimension if unsuccessful 339 public int[] estimateItemSize(int hSpan, int vSpan, 340 ItemInfo itemInfo, boolean springLoaded) { 341 int[] size = new int[2]; 342 if (getChildCount() > 0) { 343 CellLayout cl = (CellLayout) mLauncher.getWorkspace().getChildAt(0); 344 Rect r = estimateItemPosition(cl, itemInfo, 0, 0, hSpan, vSpan); 345 size[0] = r.width(); 346 size[1] = r.height(); 347 if (springLoaded) { 348 size[0] *= mSpringLoadedShrinkFactor; 349 size[1] *= mSpringLoadedShrinkFactor; 350 } 351 return size; 352 } else { 353 size[0] = Integer.MAX_VALUE; 354 size[1] = Integer.MAX_VALUE; 355 return size; 356 } 357 } 358 public Rect estimateItemPosition(CellLayout cl, ItemInfo pendingInfo, 359 int hCell, int vCell, int hSpan, int vSpan) { 360 Rect r = new Rect(); 361 cl.cellToRect(hCell, vCell, hSpan, vSpan, r); 362 return r; 363 } 364 365 public void buildPageHardwareLayers() { 366 if (getWindowToken() != null) { 367 final int childCount = getChildCount(); 368 for (int i = 0; i < childCount; i++) { 369 CellLayout cl = (CellLayout) getChildAt(i); 370 cl.getShortcutsAndWidgets().buildLayer(); 371 } 372 } 373 } 374 375 public void onDragStart(DragSource source, Object info, int dragAction) { 376 mIsDragOccuring = true; 377 updateChildrenLayersEnabled(); 378 mLauncher.lockScreenOrientationOnLargeUI(); 379 } 380 381 public void onDragEnd() { 382 mIsDragOccuring = false; 383 updateChildrenLayersEnabled(); 384 mLauncher.unlockScreenOrientationOnLargeUI(); 385 } 386 387 /** 388 * Initializes various states for this workspace. 389 */ 390 protected void initWorkspace() { 391 Context context = getContext(); 392 mCurrentPage = mDefaultPage; 393 Launcher.setScreen(mCurrentPage); 394 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 395 mIconCache = app.getIconCache(); 396 setWillNotDraw(false); 397 setChildrenDrawnWithCacheEnabled(true); 398 399 final Resources res = getResources(); 400 try { 401 mBackground = res.getDrawable(R.drawable.apps_customize_bg); 402 } catch (Resources.NotFoundException e) { 403 // In this case, we will skip drawing background protection 404 } 405 406 mWallpaperOffset = new WallpaperOffsetInterpolator(); 407 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 408 display.getSize(mDisplaySize); 409 mWallpaperTravelWidth = (int) (mDisplaySize.x * 410 wallpaperTravelToScreenWidthRatio(mDisplaySize.x, mDisplaySize.y)); 411 412 mMaxDistanceForFolderCreation = (0.6f * res.getDimensionPixelSize(R.dimen.app_icon_size)); 413 mFlingThresholdVelocity = (int) (FLING_THRESHOLD_VELOCITY * mDensity); 414 } 415 416 @Override 417 protected int getScrollMode() { 418 return SmoothPagedView.X_LARGE_MODE; 419 } 420 421 @Override 422 public void onChildViewAdded(View parent, View child) { 423 if (!(child instanceof CellLayout)) { 424 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 425 } 426 CellLayout cl = ((CellLayout) child); 427 cl.setOnInterceptTouchListener(this); 428 cl.setClickable(true); 429 cl.enableHardwareLayers(); 430 } 431 432 @Override 433 public void onChildViewRemoved(View parent, View child) { 434 } 435 436 /** 437 * @return The open folder on the current screen, or null if there is none 438 */ 439 Folder getOpenFolder() { 440 DragLayer dragLayer = mLauncher.getDragLayer(); 441 int count = dragLayer.getChildCount(); 442 for (int i = 0; i < count; i++) { 443 View child = dragLayer.getChildAt(i); 444 if (child instanceof Folder) { 445 Folder folder = (Folder) child; 446 if (folder.getInfo().opened) 447 return folder; 448 } 449 } 450 return null; 451 } 452 453 boolean isTouchActive() { 454 return mTouchState != TOUCH_STATE_REST; 455 } 456 457 /** 458 * Adds the specified child in the specified screen. The position and dimension of 459 * the child are defined by x, y, spanX and spanY. 460 * 461 * @param child The child to add in one of the workspace's screens. 462 * @param screen The screen in which to add the child. 463 * @param x The X position of the child in the screen's grid. 464 * @param y The Y position of the child in the screen's grid. 465 * @param spanX The number of cells spanned horizontally by the child. 466 * @param spanY The number of cells spanned vertically by the child. 467 */ 468 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY) { 469 addInScreen(child, container, screen, x, y, spanX, spanY, false); 470 } 471 472 /** 473 * Adds the specified child in the specified screen. The position and dimension of 474 * the child are defined by x, y, spanX and spanY. 475 * 476 * @param child The child to add in one of the workspace's screens. 477 * @param screen The screen in which to add the child. 478 * @param x The X position of the child in the screen's grid. 479 * @param y The Y position of the child in the screen's grid. 480 * @param spanX The number of cells spanned horizontally by the child. 481 * @param spanY The number of cells spanned vertically by the child. 482 * @param insert When true, the child is inserted at the beginning of the children list. 483 */ 484 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY, 485 boolean insert) { 486 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 487 if (screen < 0 || screen >= getChildCount()) { 488 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 489 + " (was " + screen + "); skipping child"); 490 return; 491 } 492 } 493 494 final CellLayout layout; 495 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 496 layout = mLauncher.getHotseat().getLayout(); 497 child.setOnKeyListener(null); 498 499 // Hide folder title in the hotseat 500 if (child instanceof FolderIcon) { 501 ((FolderIcon) child).setTextVisible(false); 502 } 503 504 if (screen < 0) { 505 screen = mLauncher.getHotseat().getOrderInHotseat(x, y); 506 } else { 507 // Note: We do this to ensure that the hotseat is always laid out in the orientation 508 // of the hotseat in order regardless of which orientation they were added 509 x = mLauncher.getHotseat().getCellXFromOrder(screen); 510 y = mLauncher.getHotseat().getCellYFromOrder(screen); 511 } 512 } else { 513 // Show folder title if not in the hotseat 514 if (child instanceof FolderIcon) { 515 ((FolderIcon) child).setTextVisible(true); 516 } 517 518 layout = (CellLayout) getChildAt(screen); 519 child.setOnKeyListener(new IconKeyEventListener()); 520 } 521 522 LayoutParams genericLp = child.getLayoutParams(); 523 CellLayout.LayoutParams lp; 524 if (genericLp == null || !(genericLp instanceof CellLayout.LayoutParams)) { 525 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 526 } else { 527 lp = (CellLayout.LayoutParams) genericLp; 528 lp.cellX = x; 529 lp.cellY = y; 530 lp.cellHSpan = spanX; 531 lp.cellVSpan = spanY; 532 } 533 534 if (spanX < 0 && spanY < 0) { 535 lp.isLockedToGrid = false; 536 } 537 538 // Get the canonical child id to uniquely represent this view in this screen 539 int childId = LauncherModel.getCellLayoutChildId(container, screen, x, y, spanX, spanY); 540 boolean markCellsAsOccupied = !(child instanceof Folder); 541 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 542 // TODO: This branch occurs when the workspace is adding views 543 // outside of the defined grid 544 // maybe we should be deleting these items from the LauncherModel? 545 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 546 } 547 548 if (!(child instanceof Folder)) { 549 child.setHapticFeedbackEnabled(false); 550 child.setOnLongClickListener(mLongClickListener); 551 } 552 if (child instanceof DropTarget) { 553 mDragController.addDropTarget((DropTarget) child); 554 } 555 } 556 557 /** 558 * Check if the point (x, y) hits a given page. 559 */ 560 private boolean hitsPage(int index, float x, float y) { 561 final View page = getChildAt(index); 562 if (page != null) { 563 float[] localXY = { x, y }; 564 mapPointFromSelfToChild(page, localXY); 565 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 566 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 567 } 568 return false; 569 } 570 571 @Override 572 protected boolean hitsPreviousPage(float x, float y) { 573 // mNextPage is set to INVALID_PAGE whenever we are stationary. 574 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 575 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 576 577 // Only allow tap to next page on large devices, where there's significant margin outside 578 // the active workspace 579 return LauncherApplication.isScreenLarge() && hitsPage(current - 1, x, y); 580 } 581 582 @Override 583 protected boolean hitsNextPage(float x, float y) { 584 // mNextPage is set to INVALID_PAGE whenever we are stationary. 585 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 586 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 587 588 // Only allow tap to next page on large devices, where there's significant margin outside 589 // the active workspace 590 return LauncherApplication.isScreenLarge() && hitsPage(current + 1, x, y); 591 } 592 593 /** 594 * Called directly from a CellLayout (not by the framework), after we've been added as a 595 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 596 * that it should intercept touch events, which is not something that is normally supported. 597 */ 598 @Override 599 public boolean onTouch(View v, MotionEvent event) { 600 return (isSmall() || !isFinishedSwitchingState()); 601 } 602 603 public boolean isSwitchingState() { 604 return mIsSwitchingState; 605 } 606 607 /** This differs from isSwitchingState in that we take into account how far the transition 608 * has completed. */ 609 public boolean isFinishedSwitchingState() { 610 return !mIsSwitchingState || (mTransitionProgress > 0.5f); 611 } 612 613 protected void onWindowVisibilityChanged (int visibility) { 614 mLauncher.onWindowVisibilityChanged(visibility); 615 } 616 617 @Override 618 public boolean dispatchUnhandledMove(View focused, int direction) { 619 if (isSmall() || !isFinishedSwitchingState()) { 620 // when the home screens are shrunken, shouldn't allow side-scrolling 621 return false; 622 } 623 return super.dispatchUnhandledMove(focused, direction); 624 } 625 626 @Override 627 public boolean onInterceptTouchEvent(MotionEvent ev) { 628 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 629 case MotionEvent.ACTION_DOWN: 630 mXDown = ev.getX(); 631 mYDown = ev.getY(); 632 break; 633 case MotionEvent.ACTION_POINTER_UP: 634 case MotionEvent.ACTION_UP: 635 if (mTouchState == TOUCH_STATE_REST) { 636 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 637 if (!currentPage.lastDownOnOccupiedCell()) { 638 onWallpaperTap(ev); 639 } 640 } 641 } 642 return super.onInterceptTouchEvent(ev); 643 } 644 645 @Override 646 protected void determineScrollingStart(MotionEvent ev) { 647 if (isSmall()) return; 648 if (!isFinishedSwitchingState()) return; 649 650 float deltaX = Math.abs(ev.getX() - mXDown); 651 float deltaY = Math.abs(ev.getY() - mYDown); 652 653 if (Float.compare(deltaX, 0f) == 0) return; 654 655 float slope = deltaY / deltaX; 656 float theta = (float) Math.atan(slope); 657 658 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 659 cancelCurrentPageLongPress(); 660 } 661 662 if (theta > MAX_SWIPE_ANGLE) { 663 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 664 return; 665 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 666 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 667 // increase the touch slop to make it harder to begin scrolling the workspace. This 668 // results in vertically scrolling widgets to more easily. The higher the angle, the 669 // more we increase touch slop. 670 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 671 float extraRatio = (float) 672 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 673 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 674 } else { 675 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 676 super.determineScrollingStart(ev); 677 } 678 } 679 680 @Override 681 protected boolean isScrollingIndicatorEnabled() { 682 return super.isScrollingIndicatorEnabled() && (mState != State.SPRING_LOADED); 683 } 684 685 protected void onPageBeginMoving() { 686 super.onPageBeginMoving(); 687 688 if (isHardwareAccelerated()) { 689 updateChildrenLayersEnabled(); 690 } else { 691 if (mNextPage != INVALID_PAGE) { 692 // we're snapping to a particular screen 693 enableChildrenCache(mCurrentPage, mNextPage); 694 } else { 695 // this is when user is actively dragging a particular screen, they might 696 // swipe it either left or right (but we won't advance by more than one screen) 697 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 698 } 699 } 700 701 // Only show page outlines as we pan if we are on large screen 702 if (LauncherApplication.isScreenLarge()) { 703 showOutlines(); 704 mIsStaticWallpaper = mWallpaperManager.getWallpaperInfo() == null; 705 } 706 707 // If we are not fading in adjacent screens, we still need to restore the alpha in case the 708 // user scrolls while we are transitioning (should not affect dispatchDraw optimizations) 709 if (!mFadeInAdjacentScreens) { 710 for (int i = 0; i < getChildCount(); ++i) { 711 ((CellLayout) getPageAt(i)).setShortcutAndWidgetAlpha(1f); 712 } 713 } 714 715 // Show the scroll indicator as you pan the page 716 showScrollingIndicator(false); 717 } 718 719 protected void onPageEndMoving() { 720 super.onPageEndMoving(); 721 722 if (isHardwareAccelerated()) { 723 updateChildrenLayersEnabled(); 724 } else { 725 clearChildrenCache(); 726 } 727 728 729 if (mDragController.isDragging()) { 730 if (isSmall()) { 731 // If we are in springloaded mode, then force an event to check if the current touch 732 // is under a new page (to scroll to) 733 mDragController.forceMoveEvent(); 734 } 735 } else { 736 // If we are not mid-dragging, hide the page outlines if we are on a large screen 737 if (LauncherApplication.isScreenLarge()) { 738 hideOutlines(); 739 } 740 741 // Hide the scroll indicator as you pan the page 742 if (!mDragController.isDragging()) { 743 hideScrollingIndicator(false); 744 } 745 } 746 mOverScrollMaxBackgroundAlpha = 0.0f; 747 mOverScrollPageIndex = -1; 748 749 if (mDelayedResizeRunnable != null) { 750 mDelayedResizeRunnable.run(); 751 mDelayedResizeRunnable = null; 752 } 753 754 if (mDelayedSnapToPageRunnable != null) { 755 mDelayedSnapToPageRunnable.run(); 756 mDelayedSnapToPageRunnable = null; 757 } 758 } 759 760 @Override 761 protected void notifyPageSwitchListener() { 762 super.notifyPageSwitchListener(); 763 Launcher.setScreen(mCurrentPage); 764 }; 765 766 // As a ratio of screen height, the total distance we want the parallax effect to span 767 // horizontally 768 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 769 float aspectRatio = width / (float) height; 770 771 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 772 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 773 // We will use these two data points to extrapolate how much the wallpaper parallax effect 774 // to span (ie travel) at any aspect ratio: 775 776 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 777 final float ASPECT_RATIO_PORTRAIT = 10/16f; 778 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 779 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 780 781 // To find out the desired width at different aspect ratios, we use the following two 782 // formulas, where the coefficient on x is the aspect ratio (width/height): 783 // (16/10)x + y = 1.5 784 // (10/16)x + y = 1.2 785 // We solve for x and y and end up with a final formula: 786 final float x = 787 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 788 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 789 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 790 return x * aspectRatio + y; 791 } 792 793 // The range of scroll values for Workspace 794 private int getScrollRange() { 795 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 796 } 797 798 protected void setWallpaperDimension() { 799 DisplayMetrics displayMetrics = new DisplayMetrics(); 800 mLauncher.getWindowManager().getDefaultDisplay().getRealMetrics(displayMetrics); 801 final int maxDim = Math.max(displayMetrics.widthPixels, displayMetrics.heightPixels); 802 final int minDim = Math.min(displayMetrics.widthPixels, displayMetrics.heightPixels); 803 804 // We need to ensure that there is enough extra space in the wallpaper for the intended 805 // parallax effects 806 if (LauncherApplication.isScreenLarge()) { 807 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 808 mWallpaperHeight = maxDim; 809 } else { 810 mWallpaperWidth = Math.max((int) (minDim * WALLPAPER_SCREENS_SPAN), maxDim); 811 mWallpaperHeight = maxDim; 812 } 813 new Thread("setWallpaperDimension") { 814 public void run() { 815 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 816 } 817 }.start(); 818 } 819 820 private float wallpaperOffsetForCurrentScroll() { 821 // Set wallpaper offset steps (1 / (number of screens - 1)) 822 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f); 823 824 // For the purposes of computing the scrollRange and overScrollOffset, we assume 825 // that mLayoutScale is 1. This means that when we're in spring-loaded mode, 826 // there's no discrepancy between the wallpaper offset for a given page. 827 float layoutScale = mLayoutScale; 828 mLayoutScale = 1f; 829 int scrollRange = getScrollRange(); 830 831 // Again, we adjust the wallpaper offset to be consistent between values of mLayoutScale 832 float adjustedScrollX = Math.max(0, Math.min(getScrollX(), mMaxScrollX)); 833 adjustedScrollX *= mWallpaperScrollRatio; 834 mLayoutScale = layoutScale; 835 836 float scrollProgress = 837 adjustedScrollX / (float) scrollRange; 838 839 if (LauncherApplication.isScreenLarge() && mIsStaticWallpaper) { 840 // The wallpaper travel width is how far, from left to right, the wallpaper will move 841 // at this orientation. On tablets in portrait mode we don't move all the way to the 842 // edges of the wallpaper, or otherwise the parallax effect would be too strong. 843 int wallpaperTravelWidth = Math.min(mWallpaperTravelWidth, mWallpaperWidth); 844 845 float offsetInDips = wallpaperTravelWidth * scrollProgress + 846 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 847 float offset = offsetInDips / (float) mWallpaperWidth; 848 return offset; 849 } else { 850 return scrollProgress; 851 } 852 } 853 854 private void syncWallpaperOffsetWithScroll() { 855 final boolean enableWallpaperEffects = isHardwareAccelerated(); 856 if (enableWallpaperEffects) { 857 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 858 } 859 } 860 861 public void updateWallpaperOffsetImmediately() { 862 mUpdateWallpaperOffsetImmediately = true; 863 } 864 865 private void updateWallpaperOffsets() { 866 boolean updateNow = false; 867 boolean keepUpdating = true; 868 if (mUpdateWallpaperOffsetImmediately) { 869 updateNow = true; 870 keepUpdating = false; 871 mWallpaperOffset.jumpToFinal(); 872 mUpdateWallpaperOffsetImmediately = false; 873 } else { 874 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 875 } 876 if (updateNow) { 877 if (mWindowToken != null) { 878 mWallpaperManager.setWallpaperOffsets(mWindowToken, 879 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 880 } 881 } 882 if (keepUpdating) { 883 invalidate(); 884 } 885 } 886 887 @Override 888 protected void updateCurrentPageScroll() { 889 super.updateCurrentPageScroll(); 890 computeWallpaperScrollRatio(mCurrentPage); 891 } 892 893 @Override 894 protected void snapToPage(int whichPage) { 895 super.snapToPage(whichPage); 896 computeWallpaperScrollRatio(whichPage); 897 } 898 899 @Override 900 protected void snapToPage(int whichPage, int duration) { 901 super.snapToPage(whichPage, duration); 902 computeWallpaperScrollRatio(whichPage); 903 } 904 905 protected void snapToPage(int whichPage, Runnable r) { 906 if (mDelayedSnapToPageRunnable != null) { 907 mDelayedSnapToPageRunnable.run(); 908 } 909 mDelayedSnapToPageRunnable = r; 910 snapToPage(whichPage, SLOW_PAGE_SNAP_ANIMATION_DURATION); 911 } 912 913 private void computeWallpaperScrollRatio(int page) { 914 // Here, we determine what the desired scroll would be with and without a layout scale, 915 // and compute a ratio between the two. This allows us to adjust the wallpaper offset 916 // as though there is no layout scale. 917 float layoutScale = mLayoutScale; 918 int scaled = getChildOffset(page) - getRelativeChildOffset(page); 919 mLayoutScale = 1.0f; 920 float unscaled = getChildOffset(page) - getRelativeChildOffset(page); 921 mLayoutScale = layoutScale; 922 if (scaled > 0) { 923 mWallpaperScrollRatio = (1.0f * unscaled) / scaled; 924 } else { 925 mWallpaperScrollRatio = 1f; 926 } 927 } 928 929 class WallpaperOffsetInterpolator { 930 float mFinalHorizontalWallpaperOffset = 0.0f; 931 float mFinalVerticalWallpaperOffset = 0.5f; 932 float mHorizontalWallpaperOffset = 0.0f; 933 float mVerticalWallpaperOffset = 0.5f; 934 long mLastWallpaperOffsetUpdateTime; 935 boolean mIsMovingFast; 936 boolean mOverrideHorizontalCatchupConstant; 937 float mHorizontalCatchupConstant = 0.35f; 938 float mVerticalCatchupConstant = 0.35f; 939 940 public WallpaperOffsetInterpolator() { 941 } 942 943 public void setOverrideHorizontalCatchupConstant(boolean override) { 944 mOverrideHorizontalCatchupConstant = override; 945 } 946 947 public void setHorizontalCatchupConstant(float f) { 948 mHorizontalCatchupConstant = f; 949 } 950 951 public void setVerticalCatchupConstant(float f) { 952 mVerticalCatchupConstant = f; 953 } 954 955 public boolean computeScrollOffset() { 956 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 957 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 958 mIsMovingFast = false; 959 return false; 960 } 961 boolean isLandscape = mDisplaySize.x > mDisplaySize.y; 962 963 long currentTime = System.currentTimeMillis(); 964 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 965 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 966 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 967 968 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 969 if (!mIsMovingFast && xdiff > 0.07) { 970 mIsMovingFast = true; 971 } 972 973 float fractionToCatchUpIn1MsHorizontal; 974 if (mOverrideHorizontalCatchupConstant) { 975 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 976 } else if (mIsMovingFast) { 977 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 978 } else { 979 // slow 980 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 981 } 982 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 983 984 fractionToCatchUpIn1MsHorizontal /= 33f; 985 fractionToCatchUpIn1MsVertical /= 33f; 986 987 final float UPDATE_THRESHOLD = 0.00001f; 988 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 989 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 990 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 991 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 992 993 // Don't have any lag between workspace and wallpaper on non-large devices 994 if (!LauncherApplication.isScreenLarge() || jumpToFinalValue) { 995 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 996 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 997 } else { 998 float percentToCatchUpVertical = 999 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 1000 float percentToCatchUpHorizontal = 1001 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 1002 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 1003 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 1004 } 1005 1006 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 1007 return true; 1008 } 1009 1010 public float getCurrX() { 1011 return mHorizontalWallpaperOffset; 1012 } 1013 1014 public float getFinalX() { 1015 return mFinalHorizontalWallpaperOffset; 1016 } 1017 1018 public float getCurrY() { 1019 return mVerticalWallpaperOffset; 1020 } 1021 1022 public float getFinalY() { 1023 return mFinalVerticalWallpaperOffset; 1024 } 1025 1026 public void setFinalX(float x) { 1027 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 1028 } 1029 1030 public void setFinalY(float y) { 1031 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 1032 } 1033 1034 public void jumpToFinal() { 1035 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 1036 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 1037 } 1038 } 1039 1040 @Override 1041 public void computeScroll() { 1042 super.computeScroll(); 1043 syncWallpaperOffsetWithScroll(); 1044 } 1045 1046 void showOutlines() { 1047 if (!isSmall() && !mIsSwitchingState) { 1048 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1049 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1050 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 1051 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 1052 mChildrenOutlineFadeInAnimation.start(); 1053 } 1054 } 1055 1056 void hideOutlines() { 1057 if (!isSmall() && !mIsSwitchingState) { 1058 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1059 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1060 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 1061 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 1062 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 1063 mChildrenOutlineFadeOutAnimation.start(); 1064 } 1065 } 1066 1067 public void showOutlinesTemporarily() { 1068 if (!mIsPageMoving && !isTouchActive()) { 1069 snapToPage(mCurrentPage); 1070 } 1071 } 1072 1073 public void setChildrenOutlineAlpha(float alpha) { 1074 mChildrenOutlineAlpha = alpha; 1075 for (int i = 0; i < getChildCount(); i++) { 1076 CellLayout cl = (CellLayout) getChildAt(i); 1077 cl.setBackgroundAlpha(alpha); 1078 } 1079 } 1080 1081 public float getChildrenOutlineAlpha() { 1082 return mChildrenOutlineAlpha; 1083 } 1084 1085 void disableBackground() { 1086 mDrawBackground = false; 1087 } 1088 void enableBackground() { 1089 mDrawBackground = true; 1090 } 1091 1092 private void animateBackgroundGradient(float finalAlpha, boolean animated) { 1093 if (mBackground == null) return; 1094 if (mBackgroundFadeInAnimation != null) { 1095 mBackgroundFadeInAnimation.cancel(); 1096 mBackgroundFadeInAnimation = null; 1097 } 1098 if (mBackgroundFadeOutAnimation != null) { 1099 mBackgroundFadeOutAnimation.cancel(); 1100 mBackgroundFadeOutAnimation = null; 1101 } 1102 float startAlpha = getBackgroundAlpha(); 1103 if (finalAlpha != startAlpha) { 1104 if (animated) { 1105 mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(startAlpha, finalAlpha); 1106 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1107 public void onAnimationUpdate(ValueAnimator animation) { 1108 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1109 } 1110 }); 1111 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1112 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1113 mBackgroundFadeOutAnimation.start(); 1114 } else { 1115 setBackgroundAlpha(finalAlpha); 1116 } 1117 } 1118 } 1119 1120 public void setBackgroundAlpha(float alpha) { 1121 if (alpha != mBackgroundAlpha) { 1122 mBackgroundAlpha = alpha; 1123 invalidate(); 1124 } 1125 } 1126 1127 public float getBackgroundAlpha() { 1128 return mBackgroundAlpha; 1129 } 1130 1131 /** 1132 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 1133 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 1134 * as being larger. This method computes what offset the rotated view should be translated 1135 * in order to minimize this perceived gap. 1136 * @param degrees Angle of the view 1137 * @param width Width of the view 1138 * @param height Height of the view 1139 * @return Offset to be used in a View.setTranslationX() call 1140 */ 1141 private float getOffsetXForRotation(float degrees, int width, int height) { 1142 mMatrix.reset(); 1143 mCamera.save(); 1144 mCamera.rotateY(Math.abs(degrees)); 1145 mCamera.getMatrix(mMatrix); 1146 mCamera.restore(); 1147 1148 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 1149 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 1150 mTempFloat2[0] = width; 1151 mTempFloat2[1] = height; 1152 mMatrix.mapPoints(mTempFloat2); 1153 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 1154 } 1155 1156 float backgroundAlphaInterpolator(float r) { 1157 float pivotA = 0.1f; 1158 float pivotB = 0.4f; 1159 if (r < pivotA) { 1160 return 0; 1161 } else if (r > pivotB) { 1162 return 1.0f; 1163 } else { 1164 return (r - pivotA)/(pivotB - pivotA); 1165 } 1166 } 1167 1168 float overScrollBackgroundAlphaInterpolator(float r) { 1169 float threshold = 0.08f; 1170 1171 if (r > mOverScrollMaxBackgroundAlpha) { 1172 mOverScrollMaxBackgroundAlpha = r; 1173 } else if (r < mOverScrollMaxBackgroundAlpha) { 1174 r = mOverScrollMaxBackgroundAlpha; 1175 } 1176 1177 return Math.min(r / threshold, 1.0f); 1178 } 1179 1180 private void screenScrolledLargeUI(int screenCenter) { 1181 if (isSwitchingState()) return; 1182 boolean isInOverscroll = false; 1183 for (int i = 0; i < getChildCount(); i++) { 1184 CellLayout cl = (CellLayout) getChildAt(i); 1185 if (cl != null) { 1186 float scrollProgress = getScrollProgress(screenCenter, cl, i); 1187 float rotation = WORKSPACE_ROTATION * scrollProgress; 1188 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1189 1190 // If the current page (i) is being over scrolled, we use a different 1191 // set of rules for setting the background alpha multiplier. 1192 if (!isSmall()) { 1193 if ((mOverScrollX < 0 && i == 0) || (mOverScrollX > mMaxScrollX && 1194 i == getChildCount() -1)) { 1195 isInOverscroll = true; 1196 rotation *= -1; 1197 cl.setBackgroundAlphaMultiplier( 1198 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 1199 mOverScrollPageIndex = i; 1200 cl.setOverScrollAmount(Math.abs(scrollProgress), i == 0); 1201 if (!mOverscrollTransformsSet) { 1202 mOverscrollTransformsSet = true; 1203 cl.setPivotX(cl.getMeasuredWidth() * (i == 0 ? 0.75f : 0.25f)); 1204 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1205 cl.setOverscrollTransformsDirty(true); 1206 } 1207 } else if (mOverScrollPageIndex != i) { 1208 cl.setBackgroundAlphaMultiplier( 1209 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1210 } 1211 } 1212 cl.setTranslationX(translationX); 1213 cl.setRotationY(rotation); 1214 if (mFadeInAdjacentScreens && !isSmall()) { 1215 float alpha = 1 - Math.abs(scrollProgress); 1216 cl.setShortcutAndWidgetAlpha(alpha); 1217 } 1218 } 1219 } 1220 if (mOverscrollTransformsSet && !isInOverscroll) { 1221 mOverscrollTransformsSet = false; 1222 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1223 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1224 } 1225 invalidate(); 1226 } 1227 1228 private void screenScrolledStandardUI(int screenCenter) { 1229 if (mOverScrollX < 0 || mOverScrollX > mMaxScrollX) { 1230 int index = mOverScrollX < 0 ? 0 : getChildCount() - 1; 1231 CellLayout cl = (CellLayout) getChildAt(index); 1232 float scrollProgress = getScrollProgress(screenCenter, cl, index); 1233 cl.setOverScrollAmount(Math.abs(scrollProgress), index == 0); 1234 float rotation = - WORKSPACE_OVERSCROLL_ROTATION * scrollProgress; 1235 cl.setRotationY(rotation); 1236 setFadeForOverScroll(Math.abs(scrollProgress)); 1237 if (!mOverscrollTransformsSet) { 1238 mOverscrollTransformsSet = true; 1239 cl.setCameraDistance(mDensity * CAMERA_DISTANCE); 1240 cl.setPivotX(cl.getMeasuredWidth() * (index == 0 ? 0.75f : 0.25f)); 1241 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1242 cl.setOverscrollTransformsDirty(true); 1243 } 1244 } else { 1245 if (mOverscrollFade != 0) { 1246 setFadeForOverScroll(0); 1247 } 1248 if (mOverscrollTransformsSet) { 1249 mOverscrollTransformsSet = false; 1250 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1251 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1252 } 1253 } 1254 } 1255 1256 @Override 1257 protected void screenScrolled(int screenCenter) { 1258 if (LauncherApplication.isScreenLarge()) { 1259 // We don't call super.screenScrolled() here because we handle the adjacent pages alpha 1260 // ourselves (for efficiency), and there are no scrolling indicators to update. 1261 screenScrolledLargeUI(screenCenter); 1262 } else { 1263 super.screenScrolled(screenCenter); 1264 screenScrolledStandardUI(screenCenter); 1265 } 1266 } 1267 1268 @Override 1269 protected void overScroll(float amount) { 1270 if (LauncherApplication.isScreenLarge()) { 1271 dampedOverScroll(amount); 1272 } else { 1273 acceleratedOverScroll(amount); 1274 } 1275 } 1276 1277 protected void onAttachedToWindow() { 1278 super.onAttachedToWindow(); 1279 mWindowToken = getWindowToken(); 1280 computeScroll(); 1281 mDragController.setWindowToken(mWindowToken); 1282 } 1283 1284 protected void onDetachedFromWindow() { 1285 mWindowToken = null; 1286 } 1287 1288 @Override 1289 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1290 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1291 mUpdateWallpaperOffsetImmediately = true; 1292 } 1293 super.onLayout(changed, left, top, right, bottom); 1294 } 1295 1296 @Override 1297 protected void onDraw(Canvas canvas) { 1298 updateWallpaperOffsets(); 1299 1300 // Draw the background gradient if necessary 1301 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1302 int alpha = (int) (mBackgroundAlpha * 255); 1303 mBackground.setAlpha(alpha); 1304 mBackground.setBounds(getScrollX(), 0, getScrollX() + getMeasuredWidth(), 1305 getMeasuredHeight()); 1306 mBackground.draw(canvas); 1307 } 1308 1309 super.onDraw(canvas); 1310 } 1311 1312 boolean isDrawingBackgroundGradient() { 1313 return (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground); 1314 } 1315 1316 @Override 1317 protected void dispatchDraw(Canvas canvas) { 1318 super.dispatchDraw(canvas); 1319 1320 if (mInScrollArea && !LauncherApplication.isScreenLarge()) { 1321 final int width = getWidth(); 1322 final int height = getHeight(); 1323 final int pageHeight = getChildAt(0).getHeight(); 1324 1325 // Set the height of the outline to be the height of the page 1326 final int offset = (height - pageHeight - getPaddingTop() - getPaddingBottom()) / 2; 1327 final int paddingTop = getPaddingTop() + offset; 1328 final int paddingBottom = getPaddingBottom() + offset; 1329 1330 final int page = (mNextPage != INVALID_PAGE ? mNextPage : mCurrentPage); 1331 final CellLayout leftPage = (CellLayout) getChildAt(page - 1); 1332 final CellLayout rightPage = (CellLayout) getChildAt(page + 1); 1333 1334 if (leftPage != null && leftPage.getIsDragOverlapping()) { 1335 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left_holo); 1336 d.setBounds(getScrollX(), paddingTop, getScrollX() + d.getIntrinsicWidth(), 1337 height - paddingBottom); 1338 d.draw(canvas); 1339 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 1340 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right_holo); 1341 d.setBounds(getScrollX() + width - d.getIntrinsicWidth(), paddingTop, 1342 getScrollX() + width, height - paddingBottom); 1343 d.draw(canvas); 1344 } 1345 } 1346 } 1347 1348 @Override 1349 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1350 if (!mLauncher.isAllAppsVisible()) { 1351 final Folder openFolder = getOpenFolder(); 1352 if (openFolder != null) { 1353 return openFolder.requestFocus(direction, previouslyFocusedRect); 1354 } else { 1355 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1356 } 1357 } 1358 return false; 1359 } 1360 1361 @Override 1362 public int getDescendantFocusability() { 1363 if (isSmall()) { 1364 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1365 } 1366 return super.getDescendantFocusability(); 1367 } 1368 1369 @Override 1370 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1371 if (!mLauncher.isAllAppsVisible()) { 1372 final Folder openFolder = getOpenFolder(); 1373 if (openFolder != null) { 1374 openFolder.addFocusables(views, direction); 1375 } else { 1376 super.addFocusables(views, direction, focusableMode); 1377 } 1378 } 1379 } 1380 1381 public boolean isSmall() { 1382 return mState == State.SMALL || mState == State.SPRING_LOADED; 1383 } 1384 1385 void enableChildrenCache(int fromPage, int toPage) { 1386 if (fromPage > toPage) { 1387 final int temp = fromPage; 1388 fromPage = toPage; 1389 toPage = temp; 1390 } 1391 1392 final int screenCount = getChildCount(); 1393 1394 fromPage = Math.max(fromPage, 0); 1395 toPage = Math.min(toPage, screenCount - 1); 1396 1397 for (int i = fromPage; i <= toPage; i++) { 1398 final CellLayout layout = (CellLayout) getChildAt(i); 1399 layout.setChildrenDrawnWithCacheEnabled(true); 1400 layout.setChildrenDrawingCacheEnabled(true); 1401 } 1402 } 1403 1404 void clearChildrenCache() { 1405 final int screenCount = getChildCount(); 1406 for (int i = 0; i < screenCount; i++) { 1407 final CellLayout layout = (CellLayout) getChildAt(i); 1408 layout.setChildrenDrawnWithCacheEnabled(false); 1409 // In software mode, we don't want the items to continue to be drawn into bitmaps 1410 if (!isHardwareAccelerated()) { 1411 layout.setChildrenDrawingCacheEnabled(false); 1412 } 1413 } 1414 } 1415 1416 private void updateChildrenLayersEnabled() { 1417 boolean small = mState == State.SMALL || mIsSwitchingState; 1418 boolean enableChildrenLayers = small || mAnimatingViewIntoPlace || isPageMoving(); 1419 1420 if (enableChildrenLayers != mChildrenLayersEnabled) { 1421 mChildrenLayersEnabled = enableChildrenLayers; 1422 for (int i = 0; i < getPageCount(); i++) { 1423 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(mChildrenLayersEnabled); 1424 } 1425 } 1426 } 1427 1428 protected void onWallpaperTap(MotionEvent ev) { 1429 final int[] position = mTempCell; 1430 getLocationOnScreen(position); 1431 1432 int pointerIndex = ev.getActionIndex(); 1433 position[0] += (int) ev.getX(pointerIndex); 1434 position[1] += (int) ev.getY(pointerIndex); 1435 1436 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1437 ev.getAction() == MotionEvent.ACTION_UP 1438 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1439 position[0], position[1], 0, null); 1440 } 1441 1442 /* 1443 * This interpolator emulates the rate at which the perceived scale of an object changes 1444 * as its distance from a camera increases. When this interpolator is applied to a scale 1445 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1446 * from the camera. 1447 */ 1448 static class ZInterpolator implements TimeInterpolator { 1449 private float focalLength; 1450 1451 public ZInterpolator(float foc) { 1452 focalLength = foc; 1453 } 1454 1455 public float getInterpolation(float input) { 1456 return (1.0f - focalLength / (focalLength + input)) / 1457 (1.0f - focalLength / (focalLength + 1.0f)); 1458 } 1459 } 1460 1461 /* 1462 * The exact reverse of ZInterpolator. 1463 */ 1464 static class InverseZInterpolator implements TimeInterpolator { 1465 private ZInterpolator zInterpolator; 1466 public InverseZInterpolator(float foc) { 1467 zInterpolator = new ZInterpolator(foc); 1468 } 1469 public float getInterpolation(float input) { 1470 return 1 - zInterpolator.getInterpolation(1 - input); 1471 } 1472 } 1473 1474 /* 1475 * ZInterpolator compounded with an ease-out. 1476 */ 1477 static class ZoomOutInterpolator implements TimeInterpolator { 1478 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(0.75f); 1479 private final ZInterpolator zInterpolator = new ZInterpolator(0.13f); 1480 1481 public float getInterpolation(float input) { 1482 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1483 } 1484 } 1485 1486 /* 1487 * InvereZInterpolator compounded with an ease-out. 1488 */ 1489 static class ZoomInInterpolator implements TimeInterpolator { 1490 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1491 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1492 1493 public float getInterpolation(float input) { 1494 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1495 } 1496 } 1497 1498 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1499 1500 /* 1501 * 1502 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1503 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1504 * 1505 * These methods mark the appropriate pages as accepting drops (which alters their visual 1506 * appearance). 1507 * 1508 */ 1509 public void onDragStartedWithItem(View v) { 1510 final Canvas canvas = new Canvas(); 1511 1512 // The outline is used to visualize where the item will land if dropped 1513 mDragOutline = createDragOutline(v, canvas, DRAG_BITMAP_PADDING); 1514 } 1515 1516 public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, Paint alphaClipPaint) { 1517 final Canvas canvas = new Canvas(); 1518 1519 int[] size = estimateItemSize(info.spanX, info.spanY, info, false); 1520 1521 // The outline is used to visualize where the item will land if dropped 1522 mDragOutline = createDragOutline(b, canvas, DRAG_BITMAP_PADDING, size[0], 1523 size[1], alphaClipPaint); 1524 } 1525 1526 public void exitWidgetResizeMode() { 1527 DragLayer dragLayer = mLauncher.getDragLayer(); 1528 dragLayer.clearAllResizeFrames(); 1529 } 1530 1531 private void initAnimationArrays() { 1532 final int childCount = getChildCount(); 1533 if (mOldTranslationXs != null) return; 1534 mOldTranslationXs = new float[childCount]; 1535 mOldTranslationYs = new float[childCount]; 1536 mOldScaleXs = new float[childCount]; 1537 mOldScaleYs = new float[childCount]; 1538 mOldBackgroundAlphas = new float[childCount]; 1539 mOldBackgroundAlphaMultipliers = new float[childCount]; 1540 mOldAlphas = new float[childCount]; 1541 mOldRotationYs = new float[childCount]; 1542 mNewTranslationXs = new float[childCount]; 1543 mNewTranslationYs = new float[childCount]; 1544 mNewScaleXs = new float[childCount]; 1545 mNewScaleYs = new float[childCount]; 1546 mNewBackgroundAlphas = new float[childCount]; 1547 mNewBackgroundAlphaMultipliers = new float[childCount]; 1548 mNewAlphas = new float[childCount]; 1549 mNewRotationYs = new float[childCount]; 1550 } 1551 1552 Animator getChangeStateAnimation(final State state, boolean animated) { 1553 return getChangeStateAnimation(state, animated, 0); 1554 } 1555 1556 Animator getChangeStateAnimation(final State state, boolean animated, int delay) { 1557 if (mState == state) { 1558 return null; 1559 } 1560 1561 // Initialize animation arrays for the first time if necessary 1562 initAnimationArrays(); 1563 1564 AnimatorSet anim = animated ? new AnimatorSet() : null; 1565 1566 // Stop any scrolling, move to the current page right away 1567 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1568 1569 final State oldState = mState; 1570 final boolean oldStateIsNormal = (oldState == State.NORMAL); 1571 final boolean oldStateIsSpringLoaded = (oldState == State.SPRING_LOADED); 1572 final boolean oldStateIsSmall = (oldState == State.SMALL); 1573 mState = state; 1574 final boolean stateIsNormal = (state == State.NORMAL); 1575 final boolean stateIsSpringLoaded = (state == State.SPRING_LOADED); 1576 final boolean stateIsSmall = (state == State.SMALL); 1577 float finalScaleFactor = 1.0f; 1578 float finalBackgroundAlpha = stateIsSpringLoaded ? 1.0f : 0f; 1579 float translationX = 0; 1580 float translationY = 0; 1581 boolean zoomIn = true; 1582 1583 if (state != State.NORMAL) { 1584 finalScaleFactor = mSpringLoadedShrinkFactor - (stateIsSmall ? 0.1f : 0); 1585 if (oldStateIsNormal && stateIsSmall) { 1586 zoomIn = false; 1587 setLayoutScale(finalScaleFactor); 1588 updateChildrenLayersEnabled(); 1589 } else { 1590 finalBackgroundAlpha = 1.0f; 1591 setLayoutScale(finalScaleFactor); 1592 } 1593 } else { 1594 setLayoutScale(1.0f); 1595 } 1596 1597 final int duration = zoomIn ? 1598 getResources().getInteger(R.integer.config_workspaceUnshrinkTime) : 1599 getResources().getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1600 for (int i = 0; i < getChildCount(); i++) { 1601 final CellLayout cl = (CellLayout) getChildAt(i); 1602 float rotation = 0f; 1603 float initialAlpha = cl.getAlpha(); 1604 float finalAlphaMultiplierValue = 1f; 1605 float finalAlpha = (!mFadeInAdjacentScreens || stateIsSpringLoaded || 1606 (i == mCurrentPage)) ? 1f : 0f; 1607 1608 // Determine the pages alpha during the state transition 1609 if ((oldStateIsSmall && stateIsNormal) || 1610 (oldStateIsNormal && stateIsSmall)) { 1611 // To/from workspace - only show the current page unless the transition is not 1612 // animated and the animation end callback below doesn't run; 1613 // or, if we're in spring-loaded mode 1614 if (i == mCurrentPage || !animated || oldStateIsSpringLoaded) { 1615 finalAlpha = 1f; 1616 finalAlphaMultiplierValue = 0f; 1617 } else { 1618 initialAlpha = 0f; 1619 finalAlpha = 0f; 1620 } 1621 } 1622 1623 // Update the rotation of the screen (don't apply rotation on Phone UI) 1624 if (LauncherApplication.isScreenLarge()) { 1625 if (i < mCurrentPage) { 1626 rotation = WORKSPACE_ROTATION; 1627 } else if (i > mCurrentPage) { 1628 rotation = -WORKSPACE_ROTATION; 1629 } 1630 } 1631 1632 // If the screen is not xlarge, then don't rotate the CellLayouts 1633 // NOTE: If we don't update the side pages alpha, then we should not hide the side 1634 // pages. see unshrink(). 1635 if (LauncherApplication.isScreenLarge()) { 1636 translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1637 } 1638 1639 mOldAlphas[i] = initialAlpha; 1640 mNewAlphas[i] = finalAlpha; 1641 if (animated) { 1642 mOldTranslationXs[i] = cl.getTranslationX(); 1643 mOldTranslationYs[i] = cl.getTranslationY(); 1644 mOldScaleXs[i] = cl.getScaleX(); 1645 mOldScaleYs[i] = cl.getScaleY(); 1646 mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1647 mOldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1648 mOldRotationYs[i] = cl.getRotationY(); 1649 1650 mNewTranslationXs[i] = translationX; 1651 mNewTranslationYs[i] = translationY; 1652 mNewScaleXs[i] = finalScaleFactor; 1653 mNewScaleYs[i] = finalScaleFactor; 1654 mNewBackgroundAlphas[i] = finalBackgroundAlpha; 1655 mNewBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1656 mNewRotationYs[i] = rotation; 1657 } else { 1658 cl.setTranslationX(translationX); 1659 cl.setTranslationY(translationY); 1660 cl.setScaleX(finalScaleFactor); 1661 cl.setScaleY(finalScaleFactor); 1662 cl.setBackgroundAlpha(finalBackgroundAlpha); 1663 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1664 cl.setShortcutAndWidgetAlpha(finalAlpha); 1665 cl.setRotationY(rotation); 1666 } 1667 } 1668 1669 if (animated) { 1670 for (int index = 0; index < getChildCount(); index++) { 1671 final int i = index; 1672 final CellLayout cl = (CellLayout) getChildAt(i); 1673 if (mOldAlphas[i] == 0 && mNewAlphas[i] == 0) { 1674 cl.setTranslationX(mNewTranslationXs[i]); 1675 cl.setTranslationY(mNewTranslationYs[i]); 1676 cl.setScaleX(mNewScaleXs[i]); 1677 cl.setScaleY(mNewScaleYs[i]); 1678 cl.setBackgroundAlpha(mNewBackgroundAlphas[i]); 1679 cl.setBackgroundAlphaMultiplier(mNewBackgroundAlphaMultipliers[i]); 1680 cl.setShortcutAndWidgetAlpha(mNewAlphas[i]); 1681 cl.setRotationY(mNewRotationYs[i]); 1682 } else { 1683 LauncherViewPropertyAnimator a = new LauncherViewPropertyAnimator(cl); 1684 a.translationX(mNewTranslationXs[i]) 1685 .translationY(mNewTranslationYs[i]) 1686 .scaleX(mNewScaleXs[i]) 1687 .scaleY(mNewScaleYs[i]) 1688 .setDuration(duration) 1689 .setInterpolator(mZoomInInterpolator); 1690 anim.play(a); 1691 1692 if (mOldAlphas[i] != mNewAlphas[i]) { 1693 LauncherViewPropertyAnimator alphaAnim = 1694 new LauncherViewPropertyAnimator(cl.getShortcutsAndWidgets()); 1695 alphaAnim.alpha(mNewAlphas[i]) 1696 .setDuration(duration) 1697 .setInterpolator(mZoomInInterpolator); 1698 anim.play(alphaAnim); 1699 } 1700 if (mOldRotationYs[i] != 0 || mNewRotationYs[i] != 0) { 1701 ValueAnimator rotate = ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1702 rotate.setInterpolator(new DecelerateInterpolator(2.0f)); 1703 rotate.addUpdateListener(new LauncherAnimatorUpdateListener() { 1704 public void onAnimationUpdate(float a, float b) { 1705 cl.setRotationY(a * mOldRotationYs[i] + b * mNewRotationYs[i]); 1706 } 1707 }); 1708 anim.play(rotate); 1709 } 1710 if (mOldBackgroundAlphas[i] != 0 || 1711 mNewBackgroundAlphas[i] != 0 || 1712 mOldBackgroundAlphaMultipliers[i] != 0 || 1713 mNewBackgroundAlphaMultipliers[i] != 0) { 1714 ValueAnimator bgAnim = ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1715 bgAnim.setInterpolator(mZoomInInterpolator); 1716 bgAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1717 public void onAnimationUpdate(float a, float b) { 1718 cl.setBackgroundAlpha( 1719 a * mOldBackgroundAlphas[i] + 1720 b * mNewBackgroundAlphas[i]); 1721 cl.setBackgroundAlphaMultiplier( 1722 a * mOldBackgroundAlphaMultipliers[i] + 1723 b * mNewBackgroundAlphaMultipliers[i]); 1724 } 1725 }); 1726 anim.play(bgAnim); 1727 } 1728 } 1729 } 1730 buildPageHardwareLayers(); 1731 anim.setStartDelay(delay); 1732 } 1733 1734 if (stateIsSpringLoaded) { 1735 // Right now we're covered by Apps Customize 1736 // Show the background gradient immediately, so the gradient will 1737 // be showing once AppsCustomize disappears 1738 animateBackgroundGradient(getResources().getInteger( 1739 R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, false); 1740 } else { 1741 // Fade the background gradient away 1742 animateBackgroundGradient(0f, true); 1743 } 1744 return anim; 1745 } 1746 1747 @Override 1748 public void onLauncherTransitionPrepare(Launcher l, boolean animated, boolean toWorkspace) { 1749 mIsSwitchingState = true; 1750 cancelScrollingIndicatorAnimations(); 1751 } 1752 1753 @Override 1754 public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) { 1755 } 1756 1757 @Override 1758 public void onLauncherTransitionStep(Launcher l, float t) { 1759 mTransitionProgress = t; 1760 } 1761 1762 @Override 1763 public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) { 1764 mIsSwitchingState = false; 1765 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 1766 updateChildrenLayersEnabled(); 1767 // The code in getChangeStateAnimation to determine initialAlpha and finalAlpha will ensure 1768 // ensure that only the current page is visible during (and subsequently, after) the 1769 // transition animation. If fade adjacent pages is disabled, then re-enable the page 1770 // visibility after the transition animation. 1771 if (!mFadeInAdjacentScreens) { 1772 for (int i = 0; i < getChildCount(); i++) { 1773 final CellLayout cl = (CellLayout) getChildAt(i); 1774 cl.setShortcutAndWidgetAlpha(1f); 1775 } 1776 } 1777 } 1778 1779 @Override 1780 public View getContent() { 1781 return this; 1782 } 1783 1784 /** 1785 * Draw the View v into the given Canvas. 1786 * 1787 * @param v the view to draw 1788 * @param destCanvas the canvas to draw on 1789 * @param padding the horizontal and vertical padding to use when drawing 1790 */ 1791 private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { 1792 final Rect clipRect = mTempRect; 1793 v.getDrawingRect(clipRect); 1794 1795 boolean textVisible = false; 1796 1797 destCanvas.save(); 1798 if (v instanceof TextView && pruneToDrawable) { 1799 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1800 clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); 1801 destCanvas.translate(padding / 2, padding / 2); 1802 d.draw(destCanvas); 1803 } else { 1804 if (v instanceof FolderIcon) { 1805 // For FolderIcons the text can bleed into the icon area, and so we need to 1806 // hide the text completely (which can't be achieved by clipping). 1807 if (((FolderIcon) v).getTextVisible()) { 1808 ((FolderIcon) v).setTextVisible(false); 1809 textVisible = true; 1810 } 1811 } else if (v instanceof BubbleTextView) { 1812 final BubbleTextView tv = (BubbleTextView) v; 1813 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1814 tv.getLayout().getLineTop(0); 1815 } else if (v instanceof TextView) { 1816 final TextView tv = (TextView) v; 1817 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1818 tv.getLayout().getLineTop(0); 1819 } 1820 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1821 destCanvas.clipRect(clipRect, Op.REPLACE); 1822 v.draw(destCanvas); 1823 1824 // Restore text visibility of FolderIcon if necessary 1825 if (textVisible) { 1826 ((FolderIcon) v).setTextVisible(true); 1827 } 1828 } 1829 destCanvas.restore(); 1830 } 1831 1832 /** 1833 * Returns a new bitmap to show when the given View is being dragged around. 1834 * Responsibility for the bitmap is transferred to the caller. 1835 */ 1836 public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1837 Bitmap b; 1838 1839 if (v instanceof TextView) { 1840 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1841 b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, 1842 d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); 1843 } else { 1844 b = Bitmap.createBitmap( 1845 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1846 } 1847 1848 canvas.setBitmap(b); 1849 drawDragView(v, canvas, padding, true); 1850 canvas.setBitmap(null); 1851 1852 return b; 1853 } 1854 1855 /** 1856 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1857 * Responsibility for the bitmap is transferred to the caller. 1858 */ 1859 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1860 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1861 final Bitmap b = Bitmap.createBitmap( 1862 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1863 1864 canvas.setBitmap(b); 1865 drawDragView(v, canvas, padding, true); 1866 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1867 canvas.setBitmap(null); 1868 return b; 1869 } 1870 1871 /** 1872 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1873 * Responsibility for the bitmap is transferred to the caller. 1874 */ 1875 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h, 1876 Paint alphaClipPaint) { 1877 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1878 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1879 canvas.setBitmap(b); 1880 1881 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 1882 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 1883 (h - padding) / (float) orig.getHeight()); 1884 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 1885 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 1886 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 1887 1888 // center the image 1889 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 1890 1891 canvas.drawBitmap(orig, src, dst, null); 1892 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor, 1893 alphaClipPaint); 1894 canvas.setBitmap(null); 1895 1896 return b; 1897 } 1898 1899 void startDrag(CellLayout.CellInfo cellInfo) { 1900 View child = cellInfo.cell; 1901 1902 // Make sure the drag was started by a long press as opposed to a long click. 1903 if (!child.isInTouchMode()) { 1904 return; 1905 } 1906 1907 mDragInfo = cellInfo; 1908 child.setVisibility(INVISIBLE); 1909 CellLayout layout = (CellLayout) child.getParent().getParent(); 1910 layout.prepareChildForDrag(child); 1911 1912 child.clearFocus(); 1913 child.setPressed(false); 1914 1915 final Canvas canvas = new Canvas(); 1916 1917 // The outline is used to visualize where the item will land if dropped 1918 mDragOutline = createDragOutline(child, canvas, DRAG_BITMAP_PADDING); 1919 beginDragShared(child, this); 1920 } 1921 1922 public void beginDragShared(View child, DragSource source) { 1923 Resources r = getResources(); 1924 1925 // The drag bitmap follows the touch point around on the screen 1926 final Bitmap b = createDragBitmap(child, new Canvas(), DRAG_BITMAP_PADDING); 1927 1928 final int bmpWidth = b.getWidth(); 1929 final int bmpHeight = b.getHeight(); 1930 1931 mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 1932 int dragLayerX = 1933 Math.round(mTempXY[0] - (bmpWidth - child.getScaleX() * child.getWidth()) / 2); 1934 int dragLayerY = 1935 Math.round(mTempXY[1] - (bmpHeight - child.getScaleY() * bmpHeight) / 2 1936 - DRAG_BITMAP_PADDING / 2); 1937 1938 Point dragVisualizeOffset = null; 1939 Rect dragRect = null; 1940 if (child instanceof BubbleTextView || child instanceof PagedViewIcon) { 1941 int iconSize = r.getDimensionPixelSize(R.dimen.app_icon_size); 1942 int iconPaddingTop = r.getDimensionPixelSize(R.dimen.app_icon_padding_top); 1943 int top = child.getPaddingTop(); 1944 int left = (bmpWidth - iconSize) / 2; 1945 int right = left + iconSize; 1946 int bottom = top + iconSize; 1947 dragLayerY += top; 1948 // Note: The drag region is used to calculate drag layer offsets, but the 1949 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 1950 dragVisualizeOffset = new Point(-DRAG_BITMAP_PADDING / 2, 1951 iconPaddingTop - DRAG_BITMAP_PADDING / 2); 1952 dragRect = new Rect(left, top, right, bottom); 1953 } else if (child instanceof FolderIcon) { 1954 int previewSize = r.getDimensionPixelSize(R.dimen.folder_preview_size); 1955 dragRect = new Rect(0, 0, child.getWidth(), previewSize); 1956 } 1957 1958 // Clear the pressed state if necessary 1959 if (child instanceof BubbleTextView) { 1960 BubbleTextView icon = (BubbleTextView) child; 1961 icon.clearPressedOrFocusedBackground(); 1962 } 1963 1964 mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 1965 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect, child.getScaleX()); 1966 b.recycle(); 1967 1968 // Show the scrolling indicator when you pick up an item 1969 showScrollingIndicator(false); 1970 } 1971 1972 void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, int screen, 1973 int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { 1974 View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); 1975 1976 final int[] cellXY = new int[2]; 1977 target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1978 addInScreen(view, container, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1979 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, cellXY[0], 1980 cellXY[1]); 1981 } 1982 1983 public boolean transitionStateShouldAllowDrop() { 1984 return ((!isSwitchingState() || mTransitionProgress > 0.5f) && mState != State.SMALL); 1985 } 1986 1987 /** 1988 * {@inheritDoc} 1989 */ 1990 public boolean acceptDrop(DragObject d) { 1991 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1992 CellLayout dropTargetLayout = mDropToLayout; 1993 if (d.dragSource != this) { 1994 // Don't accept the drop if we're not over a screen at time of drop 1995 if (dropTargetLayout == null) { 1996 return false; 1997 } 1998 if (!transitionStateShouldAllowDrop()) return false; 1999 2000 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2001 d.dragView, mDragViewVisualCenter); 2002 2003 // We want the point to be mapped to the dragTarget. 2004 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 2005 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2006 } else { 2007 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 2008 } 2009 2010 int spanX = 1; 2011 int spanY = 1; 2012 if (mDragInfo != null) { 2013 final CellLayout.CellInfo dragCellInfo = mDragInfo; 2014 spanX = dragCellInfo.spanX; 2015 spanY = dragCellInfo.spanY; 2016 } else { 2017 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 2018 spanX = dragInfo.spanX; 2019 spanY = dragInfo.spanY; 2020 } 2021 2022 int minSpanX = spanX; 2023 int minSpanY = spanY; 2024 if (d.dragInfo instanceof PendingAddWidgetInfo) { 2025 minSpanX = ((PendingAddWidgetInfo) d.dragInfo).minSpanX; 2026 minSpanY = ((PendingAddWidgetInfo) d.dragInfo).minSpanY; 2027 } 2028 2029 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2030 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, dropTargetLayout, 2031 mTargetCell); 2032 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2033 mDragViewVisualCenter[1], mTargetCell); 2034 if (willCreateUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, 2035 mTargetCell, distance, true)) { 2036 return true; 2037 } 2038 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, 2039 mTargetCell, distance)) { 2040 return true; 2041 } 2042 2043 int[] resultSpan = new int[2]; 2044 mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], 2045 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2046 null, mTargetCell, resultSpan, CellLayout.MODE_ACCEPT_DROP); 2047 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2048 2049 // Don't accept the drop if there's no room for the item 2050 if (!foundCell) { 2051 // Don't show the message if we are dropping on the AllApps button and the hotseat 2052 // is full 2053 boolean isHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2054 if (mTargetCell != null && isHotseat) { 2055 Hotseat hotseat = mLauncher.getHotseat(); 2056 if (hotseat.isAllAppsButtonRank( 2057 hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { 2058 return false; 2059 } 2060 } 2061 2062 mLauncher.showOutOfSpaceMessage(isHotseat); 2063 return false; 2064 } 2065 } 2066 return true; 2067 } 2068 2069 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, float 2070 distance, boolean considerTimeout) { 2071 if (distance > mMaxDistanceForFolderCreation) return false; 2072 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2073 2074 if (dropOverView != null) { 2075 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2076 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2077 return false; 2078 } 2079 } 2080 2081 boolean hasntMoved = false; 2082 if (mDragInfo != null) { 2083 hasntMoved = dropOverView == mDragInfo.cell; 2084 } 2085 2086 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2087 return false; 2088 } 2089 2090 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2091 boolean willBecomeShortcut = 2092 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2093 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2094 2095 return (aboveShortcut && willBecomeShortcut); 2096 } 2097 2098 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell, 2099 float distance) { 2100 if (distance > mMaxDistanceForFolderCreation) return false; 2101 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2102 2103 if (dropOverView != null) { 2104 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2105 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2106 return false; 2107 } 2108 } 2109 2110 if (dropOverView instanceof FolderIcon) { 2111 FolderIcon fi = (FolderIcon) dropOverView; 2112 if (fi.acceptDrop(dragInfo)) { 2113 return true; 2114 } 2115 } 2116 return false; 2117 } 2118 2119 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2120 int[] targetCell, float distance, boolean external, DragView dragView, 2121 Runnable postAnimationRunnable) { 2122 if (distance > mMaxDistanceForFolderCreation) return false; 2123 View v = target.getChildAt(targetCell[0], targetCell[1]); 2124 2125 boolean hasntMoved = false; 2126 if (mDragInfo != null) { 2127 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2128 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2129 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2130 } 2131 2132 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2133 mCreateUserFolderOnDrop = false; 2134 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 2135 2136 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2137 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2138 2139 if (aboveShortcut && willBecomeShortcut) { 2140 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2141 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2142 // if the drag started here, we need to remove it from the workspace 2143 if (!external) { 2144 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2145 } 2146 2147 Rect folderLocation = new Rect(); 2148 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2149 target.removeView(v); 2150 2151 FolderIcon fi = 2152 mLauncher.addFolder(target, container, screen, targetCell[0], targetCell[1]); 2153 destInfo.cellX = -1; 2154 destInfo.cellY = -1; 2155 sourceInfo.cellX = -1; 2156 sourceInfo.cellY = -1; 2157 2158 // If the dragView is null, we can't animate 2159 boolean animate = dragView != null; 2160 if (animate) { 2161 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2162 postAnimationRunnable); 2163 } else { 2164 fi.addItem(destInfo); 2165 fi.addItem(sourceInfo); 2166 } 2167 return true; 2168 } 2169 return false; 2170 } 2171 2172 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2173 float distance, DragObject d, boolean external) { 2174 if (distance > mMaxDistanceForFolderCreation) return false; 2175 2176 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2177 if (!mAddToExistingFolderOnDrop) return false; 2178 mAddToExistingFolderOnDrop = false; 2179 2180 if (dropOverView instanceof FolderIcon) { 2181 FolderIcon fi = (FolderIcon) dropOverView; 2182 if (fi.acceptDrop(d.dragInfo)) { 2183 fi.onDrop(d); 2184 2185 // if the drag started here, we need to remove it from the workspace 2186 if (!external) { 2187 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2188 } 2189 return true; 2190 } 2191 } 2192 return false; 2193 } 2194 2195 public void onDrop(final DragObject d) { 2196 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2197 mDragViewVisualCenter); 2198 2199 CellLayout dropTargetLayout = mDropToLayout; 2200 2201 // We want the point to be mapped to the dragTarget. 2202 if (dropTargetLayout != null) { 2203 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 2204 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2205 } else { 2206 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 2207 } 2208 } 2209 2210 int snapScreen = -1; 2211 boolean resizeOnDrop = false; 2212 if (d.dragSource != this) { 2213 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2214 (int) mDragViewVisualCenter[1] }; 2215 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2216 } else if (mDragInfo != null) { 2217 final View cell = mDragInfo.cell; 2218 2219 Runnable resizeRunnable = null; 2220 if (dropTargetLayout != null) { 2221 // Move internally 2222 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2223 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2224 long container = hasMovedIntoHotseat ? 2225 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2226 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2227 int screen = (mTargetCell[0] < 0) ? 2228 mDragInfo.screen : indexOfChild(dropTargetLayout); 2229 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2230 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2231 // First we find the cell nearest to point at which the item is 2232 // dropped, without any consideration to whether there is an item there. 2233 2234 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2235 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2236 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2237 mDragViewVisualCenter[1], mTargetCell); 2238 2239 // If the item being dropped is a shortcut and the nearest drop 2240 // cell also contains a shortcut, then create a folder with the two shortcuts. 2241 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2242 dropTargetLayout, mTargetCell, distance, false, d.dragView, null)) { 2243 return; 2244 } 2245 2246 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, 2247 distance, d, false)) { 2248 return; 2249 } 2250 2251 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2252 // we need to find the nearest cell location that is vacant 2253 ItemInfo item = (ItemInfo) d.dragInfo; 2254 int minSpanX = item.spanX; 2255 int minSpanY = item.spanY; 2256 if (item.minSpanX > 0 && item.minSpanY > 0) { 2257 minSpanX = item.minSpanX; 2258 minSpanY = item.minSpanY; 2259 } 2260 2261 int[] resultSpan = new int[2]; 2262 mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], 2263 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, cell, 2264 mTargetCell, resultSpan, CellLayout.MODE_ON_DROP); 2265 2266 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2267 if (foundCell && (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY)) { 2268 resizeOnDrop = true; 2269 item.spanX = resultSpan[0]; 2270 item.spanY = resultSpan[1]; 2271 } 2272 2273 if (mCurrentPage != screen && !hasMovedIntoHotseat) { 2274 snapScreen = screen; 2275 snapToPage(screen); 2276 } 2277 2278 if (foundCell) { 2279 final ItemInfo info = (ItemInfo) cell.getTag(); 2280 if (hasMovedLayouts) { 2281 // Reparent the view 2282 getParentCellLayoutForView(cell).removeView(cell); 2283 addInScreen(cell, container, screen, mTargetCell[0], mTargetCell[1], 2284 info.spanX, info.spanY); 2285 } 2286 2287 // update the item's position after drop 2288 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2289 lp.cellX = lp.tmpCellX = mTargetCell[0]; 2290 lp.cellY = lp.tmpCellY = mTargetCell[1]; 2291 lp.cellHSpan = item.spanX; 2292 lp.cellVSpan = item.spanY; 2293 lp.isLockedToGrid = true; 2294 cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screen, 2295 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2296 2297 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2298 cell instanceof LauncherAppWidgetHostView) { 2299 final CellLayout cellLayout = dropTargetLayout; 2300 // We post this call so that the widget has a chance to be placed 2301 // in its final location 2302 2303 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2304 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2305 if (pinfo != null && 2306 pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2307 final Runnable addResizeFrame = new Runnable() { 2308 public void run() { 2309 DragLayer dragLayer = mLauncher.getDragLayer(); 2310 dragLayer.addResizeFrame(info, hostView, cellLayout); 2311 } 2312 }; 2313 resizeRunnable = (new Runnable() { 2314 public void run() { 2315 if (!isPageMoving()) { 2316 addResizeFrame.run(); 2317 } else { 2318 mDelayedResizeRunnable = addResizeFrame; 2319 } 2320 } 2321 }); 2322 } 2323 } 2324 2325 LauncherModel.moveItemInDatabase(mLauncher, info, container, screen, lp.cellX, 2326 lp.cellY); 2327 } else { 2328 // If we can't find a drop location, we return the item to its original position 2329 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2330 mTargetCell[0] = lp.cellX; 2331 mTargetCell[1] = lp.cellY; 2332 } 2333 } 2334 2335 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2336 final Runnable finalResizeRunnable = resizeRunnable; 2337 // Prepare it to be animated into its new position 2338 // This must be called after the view has been re-parented 2339 final Runnable onCompleteRunnable = new Runnable() { 2340 @Override 2341 public void run() { 2342 mAnimatingViewIntoPlace = false; 2343 updateChildrenLayersEnabled(); 2344 if (finalResizeRunnable != null) { 2345 finalResizeRunnable.run(); 2346 } 2347 } 2348 }; 2349 mAnimatingViewIntoPlace = true; 2350 if (d.dragView.hasDrawn()) { 2351 final ItemInfo info = (ItemInfo) cell.getTag(); 2352 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET) { 2353 int animationType = resizeOnDrop ? ANIMATE_INTO_POSITION_AND_RESIZE : 2354 ANIMATE_INTO_POSITION_AND_DISAPPEAR; 2355 animateWidgetDrop(info, parent, d.dragView, 2356 onCompleteRunnable, animationType, cell, false); 2357 } else { 2358 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2359 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2360 onCompleteRunnable, this); 2361 } 2362 } else { 2363 d.deferDragViewCleanupPostAnimation = false; 2364 cell.setVisibility(VISIBLE); 2365 } 2366 parent.onDropChild(cell); 2367 } 2368 } 2369 2370 public void setFinalScrollForPageChange(int screen) { 2371 if (screen >= 0) { 2372 mSavedScrollX = getScrollX(); 2373 CellLayout cl = (CellLayout) getChildAt(screen); 2374 mSavedTranslationX = cl.getTranslationX(); 2375 mSavedRotationY = cl.getRotationY(); 2376 final int newX = getChildOffset(screen) - getRelativeChildOffset(screen); 2377 setScrollX(newX); 2378 cl.setTranslationX(0f); 2379 cl.setRotationY(0f); 2380 } 2381 } 2382 2383 public void resetFinalScrollForPageChange(int screen) { 2384 if (screen >= 0) { 2385 CellLayout cl = (CellLayout) getChildAt(screen); 2386 setScrollX(mSavedScrollX); 2387 cl.setTranslationX(mSavedTranslationX); 2388 cl.setRotationY(mSavedRotationY); 2389 } 2390 } 2391 2392 public void getViewLocationRelativeToSelf(View v, int[] location) { 2393 getLocationInWindow(location); 2394 int x = location[0]; 2395 int y = location[1]; 2396 2397 v.getLocationInWindow(location); 2398 int vX = location[0]; 2399 int vY = location[1]; 2400 2401 location[0] = vX - x; 2402 location[1] = vY - y; 2403 } 2404 2405 public void onDragEnter(DragObject d) { 2406 mDragEnforcer.onDragEnter(); 2407 mCreateUserFolderOnDrop = false; 2408 mAddToExistingFolderOnDrop = false; 2409 2410 mDropToLayout = null; 2411 CellLayout layout = getCurrentDropLayout(); 2412 setCurrentDropLayout(layout); 2413 setCurrentDragOverlappingLayout(layout); 2414 2415 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2416 // don't need to show the outlines 2417 if (LauncherApplication.isScreenLarge()) { 2418 showOutlines(); 2419 } 2420 } 2421 2422 public void onDragExit(DragObject d) { 2423 mDragEnforcer.onDragExit(); 2424 2425 // Here we store the final page that will be dropped to, if the workspace in fact 2426 // receives the drop 2427 if (mInScrollArea) { 2428 mDropToLayout = mDragOverlappingLayout; 2429 } else { 2430 mDropToLayout = mDragTargetLayout; 2431 } 2432 2433 if (mDragMode == DRAG_MODE_CREATE_FOLDER) { 2434 mCreateUserFolderOnDrop = true; 2435 } else if (mDragMode == DRAG_MODE_ADD_TO_FOLDER) { 2436 mAddToExistingFolderOnDrop = true; 2437 } 2438 2439 // Reset the scroll area and previous drag target 2440 onResetScrollArea(); 2441 setCurrentDropLayout(null); 2442 setCurrentDragOverlappingLayout(null); 2443 2444 mSpringLoadedDragController.cancel(); 2445 2446 if (!mIsPageMoving) { 2447 hideOutlines(); 2448 } 2449 } 2450 2451 void setCurrentDropLayout(CellLayout layout) { 2452 if (mDragTargetLayout != null) { 2453 mDragTargetLayout.revertTempState(); 2454 mDragTargetLayout.onDragExit(); 2455 } 2456 mDragTargetLayout = layout; 2457 if (mDragTargetLayout != null) { 2458 mDragTargetLayout.onDragEnter(); 2459 } 2460 cleanupReorder(true); 2461 cleanupFolderCreation(); 2462 setCurrentDropOverCell(-1, -1); 2463 } 2464 2465 void setCurrentDragOverlappingLayout(CellLayout layout) { 2466 if (mDragOverlappingLayout != null) { 2467 mDragOverlappingLayout.setIsDragOverlapping(false); 2468 } 2469 mDragOverlappingLayout = layout; 2470 if (mDragOverlappingLayout != null) { 2471 mDragOverlappingLayout.setIsDragOverlapping(true); 2472 } 2473 invalidate(); 2474 } 2475 2476 void setCurrentDropOverCell(int x, int y) { 2477 if (x != mDragOverX || y != mDragOverY) { 2478 mDragOverX = x; 2479 mDragOverY = y; 2480 setDragMode(DRAG_MODE_NONE); 2481 } 2482 } 2483 2484 void setDragMode(int dragMode) { 2485 if (dragMode != mDragMode) { 2486 if (dragMode == DRAG_MODE_NONE) { 2487 cleanupAddToFolder(); 2488 // We don't want to cancel the re-order alarm every time the target cell changes 2489 // as this feels to slow / unresponsive. 2490 cleanupReorder(false); 2491 cleanupFolderCreation(); 2492 } else if (dragMode == DRAG_MODE_ADD_TO_FOLDER) { 2493 cleanupReorder(true); 2494 cleanupFolderCreation(); 2495 } else if (dragMode == DRAG_MODE_CREATE_FOLDER) { 2496 cleanupAddToFolder(); 2497 cleanupReorder(true); 2498 } else if (dragMode == DRAG_MODE_REORDER) { 2499 cleanupAddToFolder(); 2500 cleanupFolderCreation(); 2501 } 2502 mDragMode = dragMode; 2503 } 2504 } 2505 2506 private void cleanupFolderCreation() { 2507 if (mDragFolderRingAnimator != null) { 2508 mDragFolderRingAnimator.animateToNaturalState(); 2509 } 2510 mFolderCreationAlarm.cancelAlarm(); 2511 } 2512 2513 private void cleanupAddToFolder() { 2514 if (mDragOverFolderIcon != null) { 2515 mDragOverFolderIcon.onDragExit(null); 2516 mDragOverFolderIcon = null; 2517 } 2518 } 2519 2520 private void cleanupReorder(boolean cancelAlarm) { 2521 // Any pending reorders are canceled 2522 if (cancelAlarm) { 2523 mReorderAlarm.cancelAlarm(); 2524 } 2525 mLastReorderX = -1; 2526 mLastReorderY = -1; 2527 } 2528 2529 public DropTarget getDropTargetDelegate(DragObject d) { 2530 return 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 */ 2539 void mapPointFromSelfToChild(View v, float[] xy) { 2540 mapPointFromSelfToChild(v, xy, null); 2541 } 2542 2543 /* 2544 * 2545 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2546 * coordinate space. The argument xy is modified with the return result. 2547 * 2548 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2549 * computing it itself; we use this to avoid redundant matrix inversions in 2550 * findMatchingPageForDragOver 2551 * 2552 */ 2553 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2554 if (cachedInverseMatrix == null) { 2555 v.getMatrix().invert(mTempInverseMatrix); 2556 cachedInverseMatrix = mTempInverseMatrix; 2557 } 2558 int scrollX = getScrollX(); 2559 if (mNextPage != INVALID_PAGE) { 2560 scrollX = mScroller.getFinalX(); 2561 } 2562 xy[0] = xy[0] + scrollX - v.getLeft(); 2563 xy[1] = xy[1] + getScrollY() - v.getTop(); 2564 cachedInverseMatrix.mapPoints(xy); 2565 } 2566 2567 /* 2568 * Maps a point from the Workspace's coordinate system to another sibling view's. (Workspace 2569 * covers the full screen) 2570 */ 2571 void mapPointFromSelfToSibling(View v, float[] xy) { 2572 xy[0] = xy[0] - v.getLeft(); 2573 xy[1] = xy[1] - v.getTop(); 2574 } 2575 2576 void mapPointFromSelfToHotseatLayout(Hotseat hotseat, float[] xy) { 2577 xy[0] = xy[0] - hotseat.getLeft() - hotseat.getLayout().getLeft(); 2578 xy[1] = xy[1] - hotseat.getTop() - hotseat.getLayout().getTop(); 2579 } 2580 2581 /* 2582 * 2583 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2584 * the parent View's coordinate space. The argument xy is modified with the return result. 2585 * 2586 */ 2587 void mapPointFromChildToSelf(View v, float[] xy) { 2588 v.getMatrix().mapPoints(xy); 2589 int scrollX = getScrollX(); 2590 if (mNextPage != INVALID_PAGE) { 2591 scrollX = mScroller.getFinalX(); 2592 } 2593 xy[0] -= (scrollX - v.getLeft()); 2594 xy[1] -= (getScrollY() - v.getTop()); 2595 } 2596 2597 static private float squaredDistance(float[] point1, float[] point2) { 2598 float distanceX = point1[0] - point2[0]; 2599 float distanceY = point2[1] - point2[1]; 2600 return distanceX * distanceX + distanceY * distanceY; 2601 } 2602 2603 /* 2604 * 2605 * Returns true if the passed CellLayout cl overlaps with dragView 2606 * 2607 */ 2608 boolean overlaps(CellLayout cl, DragView dragView, 2609 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2610 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2611 final float[] draggedItemTopLeft = mTempDragCoordinates; 2612 draggedItemTopLeft[0] = dragViewX; 2613 draggedItemTopLeft[1] = dragViewY; 2614 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2615 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2616 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2617 2618 // Transform the dragged item's top left coordinates 2619 // to the CellLayout's local coordinates 2620 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2621 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2622 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2623 2624 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2625 // Transform the dragged item's bottom right coordinates 2626 // to the CellLayout's local coordinates 2627 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2628 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2629 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2630 2631 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2632 float overlap = (overlapRegionRight - overlapRegionLeft) * 2633 (overlapRegionBottom - overlapRegionTop); 2634 if (overlap > 0) { 2635 return true; 2636 } 2637 } 2638 } 2639 return false; 2640 } 2641 2642 /* 2643 * 2644 * This method returns the CellLayout that is currently being dragged to. In order to drag 2645 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2646 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2647 * 2648 * Return null if no CellLayout is currently being dragged over 2649 * 2650 */ 2651 private CellLayout findMatchingPageForDragOver( 2652 DragView dragView, float originX, float originY, boolean exact) { 2653 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2654 // with the item being dragged and then choose the one that's closest to the touch point 2655 final int screenCount = getChildCount(); 2656 CellLayout bestMatchingScreen = null; 2657 float smallestDistSoFar = Float.MAX_VALUE; 2658 2659 for (int i = 0; i < screenCount; i++) { 2660 CellLayout cl = (CellLayout) getChildAt(i); 2661 2662 final float[] touchXy = {originX, originY}; 2663 // Transform the touch coordinates to the CellLayout's local coordinates 2664 // If the touch point is within the bounds of the cell layout, we can return immediately 2665 cl.getMatrix().invert(mTempInverseMatrix); 2666 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2667 2668 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2669 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2670 return cl; 2671 } 2672 2673 if (!exact) { 2674 // Get the center of the cell layout in screen coordinates 2675 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2676 cellLayoutCenter[0] = cl.getWidth()/2; 2677 cellLayoutCenter[1] = cl.getHeight()/2; 2678 mapPointFromChildToSelf(cl, cellLayoutCenter); 2679 2680 touchXy[0] = originX; 2681 touchXy[1] = originY; 2682 2683 // Calculate the distance between the center of the CellLayout 2684 // and the touch point 2685 float dist = squaredDistance(touchXy, cellLayoutCenter); 2686 2687 if (dist < smallestDistSoFar) { 2688 smallestDistSoFar = dist; 2689 bestMatchingScreen = cl; 2690 } 2691 } 2692 } 2693 return bestMatchingScreen; 2694 } 2695 2696 // This is used to compute the visual center of the dragView. This point is then 2697 // used to visualize drop locations and determine where to drop an item. The idea is that 2698 // the visual center represents the user's interpretation of where the item is, and hence 2699 // is the appropriate point to use when determining drop location. 2700 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2701 DragView dragView, float[] recycle) { 2702 float res[]; 2703 if (recycle == null) { 2704 res = new float[2]; 2705 } else { 2706 res = recycle; 2707 } 2708 2709 // First off, the drag view has been shifted in a way that is not represented in the 2710 // x and y values or the x/yOffsets. Here we account for that shift. 2711 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2712 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2713 2714 // These represent the visual top and left of drag view if a dragRect was provided. 2715 // If a dragRect was not provided, then they correspond to the actual view left and 2716 // top, as the dragRect is in that case taken to be the entire dragView. 2717 // R.dimen.dragViewOffsetY. 2718 int left = x - xOffset; 2719 int top = y - yOffset; 2720 2721 // In order to find the visual center, we shift by half the dragRect 2722 res[0] = left + dragView.getDragRegion().width() / 2; 2723 res[1] = top + dragView.getDragRegion().height() / 2; 2724 2725 return res; 2726 } 2727 2728 private boolean isDragWidget(DragObject d) { 2729 return (d.dragInfo instanceof LauncherAppWidgetInfo || 2730 d.dragInfo instanceof PendingAddWidgetInfo); 2731 } 2732 private boolean isExternalDragWidget(DragObject d) { 2733 return d.dragSource != this && isDragWidget(d); 2734 } 2735 2736 public void onDragOver(DragObject d) { 2737 // Skip drag over events while we are dragging over side pages 2738 if (mInScrollArea || mIsSwitchingState || mState == State.SMALL) return; 2739 2740 Rect r = new Rect(); 2741 CellLayout layout = null; 2742 ItemInfo item = (ItemInfo) d.dragInfo; 2743 2744 // Ensure that we have proper spans for the item that we are dropping 2745 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2746 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2747 d.dragView, mDragViewVisualCenter); 2748 2749 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2750 // Identify whether we have dragged over a side page 2751 if (isSmall()) { 2752 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 2753 mLauncher.getHotseat().getHitRect(r); 2754 if (r.contains(d.x, d.y)) { 2755 layout = mLauncher.getHotseat().getLayout(); 2756 } 2757 } 2758 if (layout == null) { 2759 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false); 2760 } 2761 if (layout != mDragTargetLayout) { 2762 2763 setCurrentDropLayout(layout); 2764 setCurrentDragOverlappingLayout(layout); 2765 2766 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 2767 if (isInSpringLoadedMode) { 2768 if (mLauncher.isHotseatLayout(layout)) { 2769 mSpringLoadedDragController.cancel(); 2770 } else { 2771 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2772 } 2773 } 2774 } 2775 } else { 2776 // Test to see if we are over the hotseat otherwise just use the current page 2777 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 2778 mLauncher.getHotseat().getHitRect(r); 2779 if (r.contains(d.x, d.y)) { 2780 layout = mLauncher.getHotseat().getLayout(); 2781 } 2782 } 2783 if (layout == null) { 2784 layout = getCurrentDropLayout(); 2785 } 2786 if (layout != mDragTargetLayout) { 2787 setCurrentDropLayout(layout); 2788 setCurrentDragOverlappingLayout(layout); 2789 } 2790 } 2791 2792 // Handle the drag over 2793 if (mDragTargetLayout != null) { 2794 // We want the point to be mapped to the dragTarget. 2795 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2796 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2797 } else { 2798 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2799 } 2800 2801 ItemInfo info = (ItemInfo) d.dragInfo; 2802 2803 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2804 (int) mDragViewVisualCenter[1], 1, 1, mDragTargetLayout, mTargetCell); 2805 2806 setCurrentDropOverCell(mTargetCell[0], mTargetCell[1]); 2807 2808 float targetCellDistance = mDragTargetLayout.getDistanceFromCell( 2809 mDragViewVisualCenter[0], mDragViewVisualCenter[1], mTargetCell); 2810 2811 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2812 mTargetCell[1]); 2813 2814 manageFolderFeedback(info, mDragTargetLayout, mTargetCell, 2815 targetCellDistance, dragOverView); 2816 2817 int minSpanX = item.spanX; 2818 int minSpanY = item.spanY; 2819 if (item.minSpanX > 0 && item.minSpanY > 0) { 2820 minSpanX = item.minSpanX; 2821 minSpanY = item.minSpanY; 2822 } 2823 2824 int[] reorderPosition = new int[2]; 2825 reorderPosition = findNearestArea((int) mDragViewVisualCenter[0], 2826 (int) mDragViewVisualCenter[1], item.spanX, item.spanY, mDragTargetLayout, 2827 reorderPosition); 2828 2829 boolean nearestDropOccupied = mDragTargetLayout.isNearestDropLocationOccupied((int) 2830 mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], item.spanX, 2831 item.spanY, child, mTargetCell); 2832 2833 if (!nearestDropOccupied) { 2834 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2835 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2836 mTargetCell[0], mTargetCell[1], item.spanX, item.spanY, false, 2837 d.dragView.getDragVisualizeOffset(), d.dragView.getDragRegion()); 2838 } else if ((mDragMode == DRAG_MODE_NONE || mDragMode == DRAG_MODE_REORDER) 2839 && !mReorderAlarm.alarmPending() && (mLastReorderX != reorderPosition[0] || 2840 mLastReorderY != reorderPosition[1])) { 2841 // Otherwise, if we aren't adding to or creating a folder and there's no pending 2842 // reorder, then we schedule a reorder 2843 ReorderAlarmListener listener = new ReorderAlarmListener(mDragViewVisualCenter, 2844 minSpanX, minSpanY, item.spanX, item.spanY, d.dragView, child); 2845 mReorderAlarm.setOnAlarmListener(listener); 2846 mReorderAlarm.setAlarm(REORDER_TIMEOUT); 2847 } 2848 2849 if (mDragMode == DRAG_MODE_CREATE_FOLDER || mDragMode == DRAG_MODE_ADD_TO_FOLDER || 2850 !nearestDropOccupied) { 2851 if (mDragTargetLayout != null) { 2852 mDragTargetLayout.revertTempState(); 2853 } 2854 } 2855 } 2856 } 2857 2858 private void manageFolderFeedback(ItemInfo info, CellLayout targetLayout, 2859 int[] targetCell, float distance, View dragOverView) { 2860 boolean userFolderPending = willCreateUserFolder(info, targetLayout, targetCell, distance, 2861 false); 2862 2863 if (mDragMode == DRAG_MODE_NONE && userFolderPending && 2864 !mFolderCreationAlarm.alarmPending()) { 2865 mFolderCreationAlarm.setOnAlarmListener(new 2866 FolderCreationAlarmListener(targetLayout, targetCell[0], targetCell[1])); 2867 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2868 return; 2869 } 2870 2871 boolean willAddToFolder = 2872 willAddToExistingUserFolder(info, targetLayout, targetCell, distance); 2873 2874 if (willAddToFolder && mDragMode == DRAG_MODE_NONE) { 2875 mDragOverFolderIcon = ((FolderIcon) dragOverView); 2876 mAddToExistingFolderOnDrop = true; 2877 mDragOverFolderIcon.onDragEnter(info); 2878 if (targetLayout != null) { 2879 targetLayout.clearDragOutlines(); 2880 } 2881 setDragMode(DRAG_MODE_ADD_TO_FOLDER); 2882 return; 2883 } 2884 2885 if (mDragMode == DRAG_MODE_ADD_TO_FOLDER && !willAddToFolder) { 2886 setDragMode(DRAG_MODE_NONE); 2887 } 2888 if (mDragMode == DRAG_MODE_CREATE_FOLDER && !userFolderPending) { 2889 setDragMode(DRAG_MODE_NONE); 2890 } 2891 2892 return; 2893 } 2894 2895 class FolderCreationAlarmListener implements OnAlarmListener { 2896 CellLayout layout; 2897 int cellX; 2898 int cellY; 2899 2900 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 2901 this.layout = layout; 2902 this.cellX = cellX; 2903 this.cellY = cellY; 2904 } 2905 2906 public void onAlarm(Alarm alarm) { 2907 if (mDragFolderRingAnimator == null) { 2908 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 2909 } 2910 mDragFolderRingAnimator.setCell(cellX, cellY); 2911 mDragFolderRingAnimator.setCellLayout(layout); 2912 mDragFolderRingAnimator.animateToAcceptState(); 2913 layout.showFolderAccept(mDragFolderRingAnimator); 2914 layout.clearDragOutlines(); 2915 setDragMode(DRAG_MODE_CREATE_FOLDER); 2916 } 2917 } 2918 2919 class ReorderAlarmListener implements OnAlarmListener { 2920 float[] dragViewCenter; 2921 int minSpanX, minSpanY, spanX, spanY; 2922 DragView dragView; 2923 View child; 2924 2925 public ReorderAlarmListener(float[] dragViewCenter, int minSpanX, int minSpanY, int spanX, 2926 int spanY, DragView dragView, View child) { 2927 this.dragViewCenter = dragViewCenter; 2928 this.minSpanX = minSpanX; 2929 this.minSpanY = minSpanY; 2930 this.spanX = spanX; 2931 this.spanY = spanY; 2932 this.child = child; 2933 this.dragView = dragView; 2934 } 2935 2936 public void onAlarm(Alarm alarm) { 2937 int[] resultSpan = new int[2]; 2938 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2939 (int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell); 2940 mLastReorderX = mTargetCell[0]; 2941 mLastReorderY = mTargetCell[1]; 2942 2943 mTargetCell = mDragTargetLayout.createArea((int) mDragViewVisualCenter[0], 2944 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2945 child, mTargetCell, resultSpan, CellLayout.MODE_DRAG_OVER); 2946 2947 if (mTargetCell[0] < 0 || mTargetCell[1] < 0) { 2948 mDragTargetLayout.revertTempState(); 2949 } else { 2950 setDragMode(DRAG_MODE_REORDER); 2951 } 2952 2953 boolean resize = resultSpan[0] != spanX || resultSpan[1] != spanY; 2954 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2955 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2956 mTargetCell[0], mTargetCell[1], resultSpan[0], resultSpan[1], resize, 2957 dragView.getDragVisualizeOffset(), dragView.getDragRegion()); 2958 } 2959 } 2960 2961 @Override 2962 public void getHitRect(Rect outRect) { 2963 // We want the workspace to have the whole area of the display (it will find the correct 2964 // cell layout to drop to in the existing drag/drop logic. 2965 outRect.set(0, 0, mDisplaySize.x, mDisplaySize.y); 2966 } 2967 2968 /** 2969 * Add the item specified by dragInfo to the given layout. 2970 * @return true if successful 2971 */ 2972 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2973 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2974 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2975 return true; 2976 } 2977 mLauncher.showOutOfSpaceMessage(mLauncher.isHotseatLayout(layout)); 2978 return false; 2979 } 2980 2981 private void onDropExternal(int[] touchXY, Object dragInfo, 2982 CellLayout cellLayout, boolean insertAtFirst) { 2983 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 2984 } 2985 2986 /** 2987 * Drop an item that didn't originate on one of the workspace screens. 2988 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2989 * come from another app altogether. 2990 * 2991 * NOTE: This can also be called when we are outside of a drag event, when we want 2992 * to add an item to one of the workspace screens. 2993 */ 2994 private void onDropExternal(final int[] touchXY, final Object dragInfo, 2995 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 2996 final Runnable exitSpringLoadedRunnable = new Runnable() { 2997 @Override 2998 public void run() { 2999 mLauncher.exitSpringLoadedDragModeDelayed(true, false, null); 3000 } 3001 }; 3002 3003 ItemInfo info = (ItemInfo) dragInfo; 3004 int spanX = info.spanX; 3005 int spanY = info.spanY; 3006 if (mDragInfo != null) { 3007 spanX = mDragInfo.spanX; 3008 spanY = mDragInfo.spanY; 3009 } 3010 3011 final long container = mLauncher.isHotseatLayout(cellLayout) ? 3012 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 3013 LauncherSettings.Favorites.CONTAINER_DESKTOP; 3014 final int screen = indexOfChild(cellLayout); 3015 if (!mLauncher.isHotseatLayout(cellLayout) && screen != mCurrentPage 3016 && mState != State.SPRING_LOADED) { 3017 snapToPage(screen); 3018 } 3019 3020 if (info instanceof PendingAddItemInfo) { 3021 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 3022 3023 boolean findNearestVacantCell = true; 3024 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 3025 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3026 cellLayout, mTargetCell); 3027 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3028 mDragViewVisualCenter[1], mTargetCell); 3029 if (willCreateUserFolder((ItemInfo) d.dragInfo, cellLayout, mTargetCell, 3030 distance, true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 3031 cellLayout, mTargetCell, distance)) { 3032 findNearestVacantCell = false; 3033 } 3034 } 3035 3036 final ItemInfo item = (ItemInfo) d.dragInfo; 3037 if (findNearestVacantCell) { 3038 int minSpanX = item.spanX; 3039 int minSpanY = item.spanY; 3040 if (item.minSpanX > 0 && item.minSpanY > 0) { 3041 minSpanX = item.minSpanX; 3042 minSpanY = item.minSpanY; 3043 } 3044 int[] resultSpan = new int[2]; 3045 mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], 3046 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, info.spanX, info.spanY, 3047 null, mTargetCell, resultSpan, CellLayout.MODE_ON_DROP_EXTERNAL); 3048 item.spanX = resultSpan[0]; 3049 item.spanY = resultSpan[1]; 3050 } 3051 3052 Runnable onAnimationCompleteRunnable = new Runnable() { 3053 @Override 3054 public void run() { 3055 // When dragging and dropping from customization tray, we deal with creating 3056 // widgets/shortcuts/folders in a slightly different way 3057 switch (pendingInfo.itemType) { 3058 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 3059 int span[] = new int[2]; 3060 span[0] = item.spanX; 3061 span[1] = item.spanY; 3062 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, 3063 container, screen, mTargetCell, span, null); 3064 break; 3065 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3066 mLauncher.processShortcutFromDrop(pendingInfo.componentName, 3067 container, screen, mTargetCell, null); 3068 break; 3069 default: 3070 throw new IllegalStateException("Unknown item type: " + 3071 pendingInfo.itemType); 3072 } 3073 } 3074 }; 3075 View finalView = pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET 3076 ? ((PendingAddWidgetInfo) pendingInfo).boundWidget : null; 3077 int animationStyle = ANIMATE_INTO_POSITION_AND_DISAPPEAR; 3078 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && 3079 ((PendingAddWidgetInfo) pendingInfo).info.configure != null) { 3080 animationStyle = ANIMATE_INTO_POSITION_AND_REMAIN; 3081 } 3082 animateWidgetDrop(info, cellLayout, d.dragView, onAnimationCompleteRunnable, 3083 animationStyle, finalView, true); 3084 } else { 3085 // This is for other drag/drop cases, like dragging from All Apps 3086 View view = null; 3087 3088 switch (info.itemType) { 3089 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 3090 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3091 if (info.container == NO_ID && info instanceof ApplicationInfo) { 3092 // Came from all apps -- make a copy 3093 info = new ShortcutInfo((ApplicationInfo) info); 3094 } 3095 view = mLauncher.createShortcut(R.layout.application, cellLayout, 3096 (ShortcutInfo) info); 3097 break; 3098 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 3099 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 3100 (FolderInfo) info, mIconCache); 3101 break; 3102 default: 3103 throw new IllegalStateException("Unknown item type: " + info.itemType); 3104 } 3105 3106 // First we find the cell nearest to point at which the item is 3107 // dropped, without any consideration to whether there is an item there. 3108 if (touchXY != null) { 3109 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3110 cellLayout, mTargetCell); 3111 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3112 mDragViewVisualCenter[1], mTargetCell); 3113 d.postAnimationRunnable = exitSpringLoadedRunnable; 3114 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, distance, 3115 true, d.dragView, d.postAnimationRunnable)) { 3116 return; 3117 } 3118 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, distance, d, 3119 true)) { 3120 return; 3121 } 3122 } 3123 3124 if (touchXY != null) { 3125 // when dragging and dropping, just find the closest free spot 3126 mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], 3127 (int) mDragViewVisualCenter[1], 1, 1, 1, 1, 3128 null, mTargetCell, null, CellLayout.MODE_ON_DROP_EXTERNAL); 3129 } else { 3130 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3131 } 3132 addInScreen(view, container, screen, mTargetCell[0], mTargetCell[1], info.spanX, 3133 info.spanY, insertAtFirst); 3134 cellLayout.onDropChild(view); 3135 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 3136 cellLayout.getShortcutsAndWidgets().measureChild(view); 3137 3138 3139 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, 3140 lp.cellX, lp.cellY); 3141 3142 if (d.dragView != null) { 3143 // We wrap the animation call in the temporary set and reset of the current 3144 // cellLayout to its final transform -- this means we animate the drag view to 3145 // the correct final location. 3146 setFinalTransitionTransform(cellLayout); 3147 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 3148 exitSpringLoadedRunnable); 3149 resetTransitionTransform(cellLayout); 3150 } 3151 } 3152 } 3153 3154 public Bitmap createWidgetBitmap(ItemInfo widgetInfo, View layout) { 3155 int[] unScaledSize = mLauncher.getWorkspace().estimateItemSize(widgetInfo.spanX, 3156 widgetInfo.spanY, widgetInfo, false); 3157 int visibility = layout.getVisibility(); 3158 layout.setVisibility(VISIBLE); 3159 3160 int width = MeasureSpec.makeMeasureSpec(unScaledSize[0], MeasureSpec.EXACTLY); 3161 int height = MeasureSpec.makeMeasureSpec(unScaledSize[1], MeasureSpec.EXACTLY); 3162 Bitmap b = Bitmap.createBitmap(unScaledSize[0], unScaledSize[1], 3163 Bitmap.Config.ARGB_8888); 3164 Canvas c = new Canvas(b); 3165 3166 layout.measure(width, height); 3167 layout.layout(0, 0, unScaledSize[0], unScaledSize[1]); 3168 layout.draw(c); 3169 c.setBitmap(null); 3170 layout.setVisibility(visibility); 3171 return b; 3172 } 3173 3174 private void getFinalPositionForDropAnimation(int[] loc, float[] scaleXY, 3175 DragView dragView, CellLayout layout, ItemInfo info, int[] targetCell, View finalView, 3176 boolean external) { 3177 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 3178 // location and size on the home screen. 3179 int spanX = info.spanX; 3180 int spanY = info.spanY; 3181 3182 Rect r = estimateItemPosition(layout, info, targetCell[0], targetCell[1], spanX, spanY); 3183 loc[0] = r.left; 3184 loc[1] = r.top; 3185 3186 setFinalTransitionTransform(layout); 3187 float cellLayoutScale = 3188 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(layout, loc); 3189 resetTransitionTransform(layout); 3190 float dragViewScaleX = (1.0f * r.width()) / dragView.getMeasuredWidth(); 3191 float dragViewScaleY = (1.0f * r.height()) / dragView.getMeasuredHeight(); 3192 3193 // The animation will scale the dragView about its center, so we need to center about 3194 // the final location. 3195 loc[0] -= (dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 3196 loc[1] -= (dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 3197 3198 scaleXY[0] = dragViewScaleX * cellLayoutScale; 3199 scaleXY[1] = dragViewScaleY * cellLayoutScale; 3200 } 3201 3202 public void animateWidgetDrop(ItemInfo info, CellLayout cellLayout, DragView dragView, 3203 final Runnable onCompleteRunnable, int animationType, final View finalView, 3204 boolean external) { 3205 Rect from = new Rect(); 3206 mLauncher.getDragLayer().getViewRectRelativeToSelf(dragView, from); 3207 3208 int[] finalPos = new int[2]; 3209 float scaleXY[] = new float[2]; 3210 getFinalPositionForDropAnimation(finalPos, scaleXY, dragView, cellLayout, info, mTargetCell, 3211 finalView, external); 3212 3213 Resources res = mLauncher.getResources(); 3214 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration) - 200; 3215 3216 // In the case where we've prebound the widget, we remove it from the DragLayer 3217 if (finalView instanceof AppWidgetHostView && external) { 3218 mLauncher.getDragLayer().removeView(finalView); 3219 } 3220 if ((animationType == ANIMATE_INTO_POSITION_AND_RESIZE || external) && finalView != null) { 3221 Bitmap crossFadeBitmap = createWidgetBitmap(info, finalView); 3222 dragView.setCrossFadeBitmap(crossFadeBitmap); 3223 dragView.crossFade((int) (duration * 0.8f)); 3224 } else if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && external) { 3225 scaleXY[0] = scaleXY[1] = Math.min(scaleXY[0], scaleXY[1]); 3226 } 3227 3228 DragLayer dragLayer = mLauncher.getDragLayer(); 3229 if (animationType == CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION) { 3230 mLauncher.getDragLayer().animateViewIntoPosition(dragView, finalPos, 0f, 0.1f, 0.1f, 3231 DragLayer.ANIMATION_END_DISAPPEAR, onCompleteRunnable, duration); 3232 } else { 3233 int endStyle; 3234 if (animationType == ANIMATE_INTO_POSITION_AND_REMAIN) { 3235 endStyle = DragLayer.ANIMATION_END_REMAIN_VISIBLE; 3236 } else { 3237 endStyle = DragLayer.ANIMATION_END_DISAPPEAR;; 3238 } 3239 3240 Runnable onComplete = new Runnable() { 3241 @Override 3242 public void run() { 3243 if (finalView != null) { 3244 finalView.setVisibility(VISIBLE); 3245 } 3246 if (onCompleteRunnable != null) { 3247 onCompleteRunnable.run(); 3248 } 3249 } 3250 }; 3251 dragLayer.animateViewIntoPosition(dragView, from.left, from.top, finalPos[0], 3252 finalPos[1], 1, 1, 1, scaleXY[0], scaleXY[1], onComplete, endStyle, 3253 duration, this); 3254 } 3255 } 3256 3257 public void setFinalTransitionTransform(CellLayout layout) { 3258 if (isSwitchingState()) { 3259 int index = indexOfChild(layout); 3260 mCurrentScaleX = layout.getScaleX(); 3261 mCurrentScaleY = layout.getScaleY(); 3262 mCurrentTranslationX = layout.getTranslationX(); 3263 mCurrentTranslationY = layout.getTranslationY(); 3264 mCurrentRotationY = layout.getRotationY(); 3265 layout.setScaleX(mNewScaleXs[index]); 3266 layout.setScaleY(mNewScaleYs[index]); 3267 layout.setTranslationX(mNewTranslationXs[index]); 3268 layout.setTranslationY(mNewTranslationYs[index]); 3269 layout.setRotationY(mNewRotationYs[index]); 3270 } 3271 } 3272 public void resetTransitionTransform(CellLayout layout) { 3273 if (isSwitchingState()) { 3274 mCurrentScaleX = layout.getScaleX(); 3275 mCurrentScaleY = layout.getScaleY(); 3276 mCurrentTranslationX = layout.getTranslationX(); 3277 mCurrentTranslationY = layout.getTranslationY(); 3278 mCurrentRotationY = layout.getRotationY(); 3279 layout.setScaleX(mCurrentScaleX); 3280 layout.setScaleY(mCurrentScaleY); 3281 layout.setTranslationX(mCurrentTranslationX); 3282 layout.setTranslationY(mCurrentTranslationY); 3283 layout.setRotationY(mCurrentRotationY); 3284 } 3285 } 3286 3287 /** 3288 * Return the current {@link CellLayout}, correctly picking the destination 3289 * screen while a scroll is in progress. 3290 */ 3291 public CellLayout getCurrentDropLayout() { 3292 return (CellLayout) getChildAt(mNextPage == INVALID_PAGE ? mCurrentPage : mNextPage); 3293 } 3294 3295 /** 3296 * Return the current CellInfo describing our current drag; this method exists 3297 * so that Launcher can sync this object with the correct info when the activity is created/ 3298 * destroyed 3299 * 3300 */ 3301 public CellLayout.CellInfo getDragInfo() { 3302 return mDragInfo; 3303 } 3304 3305 /** 3306 * Calculate the nearest cell where the given object would be dropped. 3307 * 3308 * pixelX and pixelY should be in the coordinate system of layout 3309 */ 3310 private int[] findNearestArea(int pixelX, int pixelY, 3311 int spanX, int spanY, CellLayout layout, int[] recycle) { 3312 return layout.findNearestArea( 3313 pixelX, pixelY, spanX, spanY, recycle); 3314 } 3315 3316 void setup(DragController dragController) { 3317 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3318 mDragController = dragController; 3319 3320 // hardware layers on children are enabled on startup, but should be disabled until 3321 // needed 3322 updateChildrenLayersEnabled(); 3323 setWallpaperDimension(); 3324 } 3325 3326 /** 3327 * Called at the end of a drag which originated on the workspace. 3328 */ 3329 public void onDropCompleted(View target, DragObject d, boolean isFlingToDelete, 3330 boolean success) { 3331 if (success) { 3332 if (target != this) { 3333 if (mDragInfo != null) { 3334 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 3335 if (mDragInfo.cell instanceof DropTarget) { 3336 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 3337 } 3338 } 3339 } 3340 } else if (mDragInfo != null) { 3341 CellLayout cellLayout; 3342 if (mLauncher.isHotseatLayout(target)) { 3343 cellLayout = mLauncher.getHotseat().getLayout(); 3344 } else { 3345 cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3346 } 3347 cellLayout.onDropChild(mDragInfo.cell); 3348 } 3349 if (d.cancelled && mDragInfo.cell != null) { 3350 mDragInfo.cell.setVisibility(VISIBLE); 3351 } 3352 mDragOutline = null; 3353 mDragInfo = null; 3354 3355 // Hide the scrolling indicator after you pick up an item 3356 hideScrollingIndicator(false); 3357 } 3358 3359 void updateItemLocationsInDatabase(CellLayout cl) { 3360 int count = cl.getShortcutsAndWidgets().getChildCount(); 3361 3362 int screen = indexOfChild(cl); 3363 int container = Favorites.CONTAINER_DESKTOP; 3364 3365 if (mLauncher.isHotseatLayout(cl)) { 3366 screen = -1; 3367 container = Favorites.CONTAINER_HOTSEAT; 3368 } 3369 3370 for (int i = 0; i < count; i++) { 3371 View v = cl.getShortcutsAndWidgets().getChildAt(i); 3372 ItemInfo info = (ItemInfo) v.getTag(); 3373 // Null check required as the AllApps button doesn't have an item info 3374 if (info != null) { 3375 LauncherModel.modifyItemInDatabase(mLauncher, info, container, screen, info.cellX, 3376 info.cellY, info.spanX, info.spanY); 3377 } 3378 } 3379 } 3380 3381 @Override 3382 public boolean supportsFlingToDelete() { 3383 return true; 3384 } 3385 3386 @Override 3387 public void onFlingToDelete(DragObject d, int x, int y, PointF vec) { 3388 // Do nothing 3389 } 3390 3391 @Override 3392 public void onFlingToDeleteCompleted() { 3393 // Do nothing 3394 } 3395 3396 public boolean isDropEnabled() { 3397 return true; 3398 } 3399 3400 @Override 3401 protected void onRestoreInstanceState(Parcelable state) { 3402 super.onRestoreInstanceState(state); 3403 Launcher.setScreen(mCurrentPage); 3404 } 3405 3406 @Override 3407 public void scrollLeft() { 3408 if (!isSmall() && !mIsSwitchingState) { 3409 super.scrollLeft(); 3410 } 3411 Folder openFolder = getOpenFolder(); 3412 if (openFolder != null) { 3413 openFolder.completeDragExit(); 3414 } 3415 } 3416 3417 @Override 3418 public void scrollRight() { 3419 if (!isSmall() && !mIsSwitchingState) { 3420 super.scrollRight(); 3421 } 3422 Folder openFolder = getOpenFolder(); 3423 if (openFolder != null) { 3424 openFolder.completeDragExit(); 3425 } 3426 } 3427 3428 @Override 3429 public boolean onEnterScrollArea(int x, int y, int direction) { 3430 // Ignore the scroll area if we are dragging over the hot seat 3431 boolean isPortrait = !LauncherApplication.isScreenLandscape(getContext()); 3432 if (mLauncher.getHotseat() != null && isPortrait) { 3433 Rect r = new Rect(); 3434 mLauncher.getHotseat().getHitRect(r); 3435 if (r.contains(x, y)) { 3436 return false; 3437 } 3438 } 3439 3440 boolean result = false; 3441 if (!isSmall() && !mIsSwitchingState) { 3442 mInScrollArea = true; 3443 3444 final int page = (mNextPage != INVALID_PAGE ? mNextPage : mCurrentPage) + 3445 (direction == DragController.SCROLL_LEFT ? -1 : 1); 3446 3447 // We always want to exit the current layout to ensure parity of enter / exit 3448 setCurrentDropLayout(null); 3449 3450 if (0 <= page && page < getChildCount()) { 3451 CellLayout layout = (CellLayout) getChildAt(page); 3452 setCurrentDragOverlappingLayout(layout); 3453 3454 // Workspace is responsible for drawing the edge glow on adjacent pages, 3455 // so we need to redraw the workspace when this may have changed. 3456 invalidate(); 3457 result = true; 3458 } 3459 } 3460 return result; 3461 } 3462 3463 @Override 3464 public boolean onExitScrollArea() { 3465 boolean result = false; 3466 if (mInScrollArea) { 3467 invalidate(); 3468 CellLayout layout = getCurrentDropLayout(); 3469 setCurrentDropLayout(layout); 3470 setCurrentDragOverlappingLayout(layout); 3471 3472 result = true; 3473 mInScrollArea = false; 3474 } 3475 return result; 3476 } 3477 3478 private void onResetScrollArea() { 3479 setCurrentDragOverlappingLayout(null); 3480 mInScrollArea = false; 3481 } 3482 3483 /** 3484 * Returns a specific CellLayout 3485 */ 3486 CellLayout getParentCellLayoutForView(View v) { 3487 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3488 for (CellLayout layout : layouts) { 3489 if (layout.getShortcutsAndWidgets().indexOfChild(v) > -1) { 3490 return layout; 3491 } 3492 } 3493 return null; 3494 } 3495 3496 /** 3497 * Returns a list of all the CellLayouts in the workspace. 3498 */ 3499 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3500 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3501 int screenCount = getChildCount(); 3502 for (int screen = 0; screen < screenCount; screen++) { 3503 layouts.add(((CellLayout) getChildAt(screen))); 3504 } 3505 if (mLauncher.getHotseat() != null) { 3506 layouts.add(mLauncher.getHotseat().getLayout()); 3507 } 3508 return layouts; 3509 } 3510 3511 /** 3512 * We should only use this to search for specific children. Do not use this method to modify 3513 * ShortcutsAndWidgetsContainer directly. Includes ShortcutAndWidgetContainers from 3514 * the hotseat and workspace pages 3515 */ 3516 ArrayList<ShortcutAndWidgetContainer> getAllShortcutAndWidgetContainers() { 3517 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3518 new ArrayList<ShortcutAndWidgetContainer>(); 3519 int screenCount = getChildCount(); 3520 for (int screen = 0; screen < screenCount; screen++) { 3521 childrenLayouts.add(((CellLayout) getChildAt(screen)).getShortcutsAndWidgets()); 3522 } 3523 if (mLauncher.getHotseat() != null) { 3524 childrenLayouts.add(mLauncher.getHotseat().getLayout().getShortcutsAndWidgets()); 3525 } 3526 return childrenLayouts; 3527 } 3528 3529 public Folder getFolderForTag(Object tag) { 3530 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3531 getAllShortcutAndWidgetContainers(); 3532 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3533 int count = layout.getChildCount(); 3534 for (int i = 0; i < count; i++) { 3535 View child = layout.getChildAt(i); 3536 if (child instanceof Folder) { 3537 Folder f = (Folder) child; 3538 if (f.getInfo() == tag && f.getInfo().opened) { 3539 return f; 3540 } 3541 } 3542 } 3543 } 3544 return null; 3545 } 3546 3547 public View getViewForTag(Object tag) { 3548 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3549 getAllShortcutAndWidgetContainers(); 3550 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3551 int count = layout.getChildCount(); 3552 for (int i = 0; i < count; i++) { 3553 View child = layout.getChildAt(i); 3554 if (child.getTag() == tag) { 3555 return child; 3556 } 3557 } 3558 } 3559 return null; 3560 } 3561 3562 void clearDropTargets() { 3563 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3564 getAllShortcutAndWidgetContainers(); 3565 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3566 int childCount = layout.getChildCount(); 3567 for (int j = 0; j < childCount; j++) { 3568 View v = layout.getChildAt(j); 3569 if (v instanceof DropTarget) { 3570 mDragController.removeDropTarget((DropTarget) v); 3571 } 3572 } 3573 } 3574 } 3575 3576 void removeItems(final ArrayList<ApplicationInfo> apps) { 3577 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3578 3579 final HashSet<String> packageNames = new HashSet<String>(); 3580 final int appCount = apps.size(); 3581 for (int i = 0; i < appCount; i++) { 3582 packageNames.add(apps.get(i).componentName.getPackageName()); 3583 } 3584 3585 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3586 for (final CellLayout layoutParent: cellLayouts) { 3587 final ViewGroup layout = layoutParent.getShortcutsAndWidgets(); 3588 3589 // Avoid ANRs by treating each screen separately 3590 post(new Runnable() { 3591 public void run() { 3592 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3593 childrenToRemove.clear(); 3594 3595 int childCount = layout.getChildCount(); 3596 for (int j = 0; j < childCount; j++) { 3597 final View view = layout.getChildAt(j); 3598 Object tag = view.getTag(); 3599 3600 if (tag instanceof ShortcutInfo) { 3601 final ShortcutInfo info = (ShortcutInfo) tag; 3602 final Intent intent = info.intent; 3603 final ComponentName name = intent.getComponent(); 3604 3605 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3606 for (String packageName: packageNames) { 3607 if (packageName.equals(name.getPackageName())) { 3608 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3609 childrenToRemove.add(view); 3610 } 3611 } 3612 } 3613 } else if (tag instanceof FolderInfo) { 3614 final FolderInfo info = (FolderInfo) tag; 3615 final ArrayList<ShortcutInfo> contents = info.contents; 3616 final int contentsCount = contents.size(); 3617 final ArrayList<ShortcutInfo> appsToRemoveFromFolder = 3618 new ArrayList<ShortcutInfo>(); 3619 3620 for (int k = 0; k < contentsCount; k++) { 3621 final ShortcutInfo appInfo = contents.get(k); 3622 final Intent intent = appInfo.intent; 3623 final ComponentName name = intent.getComponent(); 3624 3625 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3626 for (String packageName: packageNames) { 3627 if (packageName.equals(name.getPackageName())) { 3628 appsToRemoveFromFolder.add(appInfo); 3629 } 3630 } 3631 } 3632 } 3633 for (ShortcutInfo item: appsToRemoveFromFolder) { 3634 info.remove(item); 3635 LauncherModel.deleteItemFromDatabase(mLauncher, item); 3636 } 3637 } else if (tag instanceof LauncherAppWidgetInfo) { 3638 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3639 final AppWidgetProviderInfo provider = 3640 widgets.getAppWidgetInfo(info.appWidgetId); 3641 if (provider != null) { 3642 for (String packageName: packageNames) { 3643 if (packageName.equals(provider.provider.getPackageName())) { 3644 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3645 childrenToRemove.add(view); 3646 } 3647 } 3648 } 3649 } 3650 } 3651 3652 childCount = childrenToRemove.size(); 3653 for (int j = 0; j < childCount; j++) { 3654 View child = childrenToRemove.get(j); 3655 // Note: We can not remove the view directly from CellLayoutChildren as this 3656 // does not re-mark the spaces as unoccupied. 3657 layoutParent.removeViewInLayout(child); 3658 if (child instanceof DropTarget) { 3659 mDragController.removeDropTarget((DropTarget)child); 3660 } 3661 } 3662 3663 if (childCount > 0) { 3664 layout.requestLayout(); 3665 layout.invalidate(); 3666 } 3667 } 3668 }); 3669 } 3670 } 3671 3672 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3673 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = getAllShortcutAndWidgetContainers(); 3674 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3675 int childCount = layout.getChildCount(); 3676 for (int j = 0; j < childCount; j++) { 3677 final View view = layout.getChildAt(j); 3678 Object tag = view.getTag(); 3679 if (tag instanceof ShortcutInfo) { 3680 ShortcutInfo info = (ShortcutInfo) tag; 3681 // We need to check for ACTION_MAIN otherwise getComponent() might 3682 // return null for some shortcuts (for instance, for shortcuts to 3683 // web pages.) 3684 final Intent intent = info.intent; 3685 final ComponentName name = intent.getComponent(); 3686 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3687 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3688 final int appCount = apps.size(); 3689 for (int k = 0; k < appCount; k++) { 3690 ApplicationInfo app = apps.get(k); 3691 if (app.componentName.equals(name)) { 3692 BubbleTextView shortcut = (BubbleTextView) view; 3693 info.updateIcon(mIconCache); 3694 info.title = app.title.toString(); 3695 shortcut.applyFromShortcutInfo(info, mIconCache); 3696 } 3697 } 3698 } 3699 } 3700 } 3701 } 3702 } 3703 3704 void moveToDefaultScreen(boolean animate) { 3705 if (!isSmall()) { 3706 if (animate) { 3707 snapToPage(mDefaultPage); 3708 } else { 3709 setCurrentPage(mDefaultPage); 3710 } 3711 } 3712 getChildAt(mDefaultPage).requestFocus(); 3713 } 3714 3715 @Override 3716 public void syncPages() { 3717 } 3718 3719 @Override 3720 public void syncPageItems(int page, boolean immediate) { 3721 } 3722 3723 @Override 3724 protected String getCurrentPageDescription() { 3725 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 3726 return String.format(getContext().getString(R.string.workspace_scroll_format), 3727 page + 1, getChildCount()); 3728 } 3729 3730 public void getLocationInDragLayer(int[] loc) { 3731 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 3732 } 3733 3734 void setFadeForOverScroll(float fade) { 3735 if (!isScrollingIndicatorEnabled()) return; 3736 3737 mOverscrollFade = fade; 3738 float reducedFade = 0.5f + 0.5f * (1 - fade); 3739 final ViewGroup parent = (ViewGroup) getParent(); 3740 final ImageView qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3741 final ImageView dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3742 final View scrollIndicator = getScrollingIndicator(); 3743 3744 cancelScrollingIndicatorAnimations(); 3745 if (qsbDivider != null) qsbDivider.setAlpha(reducedFade); 3746 if (dockDivider != null) dockDivider.setAlpha(reducedFade); 3747 scrollIndicator.setAlpha(1 - fade); 3748 } 3749} 3750