Workspace.java revision 3a9fcedbcd235372cd2ab64f825a0b5b3937f59e
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.launcher2; 18 19import android.animation.Animator; 20import android.animation.AnimatorSet; 21import android.animation.ObjectAnimator; 22import android.animation.TimeInterpolator; 23import android.animation.ValueAnimator; 24import android.animation.ValueAnimator.AnimatorUpdateListener; 25import android.app.WallpaperManager; 26import android.appwidget.AppWidgetHostView; 27import android.appwidget.AppWidgetManager; 28import android.appwidget.AppWidgetProviderInfo; 29import android.content.ComponentName; 30import android.content.Context; 31import android.content.Intent; 32import android.content.res.Resources; 33import android.content.res.TypedArray; 34import android.graphics.Bitmap; 35import android.graphics.Camera; 36import android.graphics.Canvas; 37import android.graphics.Matrix; 38import android.graphics.Paint; 39import android.graphics.Point; 40import android.graphics.PointF; 41import android.graphics.Rect; 42import android.graphics.Region.Op; 43import android.graphics.drawable.Drawable; 44import android.os.IBinder; 45import android.os.Parcelable; 46import android.util.AttributeSet; 47import android.util.DisplayMetrics; 48import android.util.Log; 49import android.view.Display; 50import android.view.MotionEvent; 51import android.view.View; 52import android.view.ViewGroup; 53import android.view.animation.DecelerateInterpolator; 54import android.widget.ImageView; 55import android.widget.TextView; 56 57import com.android.launcher.R; 58import com.android.launcher2.FolderIcon.FolderRingAnimator; 59import com.android.launcher2.LauncherSettings.Favorites; 60 61import java.util.ArrayList; 62import java.util.HashSet; 63 64/** 65 * The workspace is a wide area with a wallpaper and a finite number of pages. 66 * Each page contains a number of icons, folders or widgets the user can 67 * interact with. A workspace is meant to be used with a fixed width only. 68 */ 69public class Workspace extends SmoothPagedView 70 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 71 DragController.DragListener, LauncherTransitionable { 72 private static final String TAG = "Launcher.Workspace"; 73 74 // Y rotation to apply to the workspace screens 75 private static final float WORKSPACE_ROTATION = 12.5f; 76 private static final float WORKSPACE_OVERSCROLL_ROTATION = 24f; 77 private static float CAMERA_DISTANCE = 6500; 78 79 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 80 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 81 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 82 83 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 84 private static final int ADJACENT_SCREEN_DROP_DURATION = 300; 85 private static final int FLING_THRESHOLD_VELOCITY = 500; 86 87 private float mMaxDistanceForFolderCreation; 88 89 // These animators are used to fade the children's outlines 90 private ObjectAnimator mChildrenOutlineFadeInAnimation; 91 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 92 private float mChildrenOutlineAlpha = 0; 93 94 // These properties refer to the background protection gradient used for AllApps and Customize 95 private ValueAnimator mBackgroundFadeInAnimation; 96 private ValueAnimator mBackgroundFadeOutAnimation; 97 private Drawable mBackground; 98 boolean mDrawBackground = true; 99 private float mBackgroundAlpha = 0; 100 private float mOverScrollMaxBackgroundAlpha = 0.0f; 101 private int mOverScrollPageIndex = -1; 102 103 private float mWallpaperScrollRatio = 1.0f; 104 105 private final WallpaperManager mWallpaperManager; 106 private IBinder mWindowToken; 107 private static final float WALLPAPER_SCREENS_SPAN = 2f; 108 109 private int mDefaultPage; 110 111 /** 112 * CellInfo for the cell that is currently being dragged 113 */ 114 private CellLayout.CellInfo mDragInfo; 115 116 /** 117 * Target drop area calculated during last acceptDrop call. 118 */ 119 private int[] mTargetCell = new int[2]; 120 private int mDragOverX = -1; 121 private int mDragOverY = -1; 122 123 /** 124 * The CellLayout that is currently being dragged over 125 */ 126 private CellLayout mDragTargetLayout = null; 127 /** 128 * The CellLayout that we will show as glowing 129 */ 130 private CellLayout mDragOverlappingLayout = null; 131 132 /** 133 * The CellLayout which will be dropped to 134 */ 135 private CellLayout mDropToLayout = null; 136 137 private Launcher mLauncher; 138 private IconCache mIconCache; 139 private DragController mDragController; 140 141 // These are temporary variables to prevent having to allocate a new object just to 142 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 143 private int[] mTempCell = new int[2]; 144 private int[] mTempEstimate = new int[2]; 145 private float[] mDragViewVisualCenter = new float[2]; 146 private float[] mTempDragCoordinates = new float[2]; 147 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 148 private float[] mTempDragBottomRightCoordinates = new float[2]; 149 private Matrix mTempInverseMatrix = new Matrix(); 150 151 private SpringLoadedDragController mSpringLoadedDragController; 152 private float mSpringLoadedShrinkFactor; 153 154 private static final int DEFAULT_CELL_COUNT_X = 4; 155 private static final int DEFAULT_CELL_COUNT_Y = 4; 156 157 // State variable that indicates whether the pages are small (ie when you're 158 // in all apps or customize mode) 159 160 enum State { NORMAL, SPRING_LOADED, SMALL }; 161 private State mState = State.NORMAL; 162 private boolean mIsSwitchingState = false; 163 164 boolean mAnimatingViewIntoPlace = false; 165 boolean mIsDragOccuring = false; 166 boolean mChildrenLayersEnabled = true; 167 168 /** Is the user is dragging an item near the edge of a page? */ 169 private boolean mInScrollArea = false; 170 171 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 172 private Bitmap mDragOutline = null; 173 private final Rect mTempRect = new Rect(); 174 private final int[] mTempXY = new int[2]; 175 private float mOverscrollFade = 0; 176 private boolean mOverscrollTransformsSet; 177 public static final int DRAG_BITMAP_PADDING = 0; 178 179 // Camera and Matrix used to determine the final position of a neighboring CellLayout 180 private final Matrix mMatrix = new Matrix(); 181 private final Camera mCamera = new Camera(); 182 private final float mTempFloat2[] = new float[2]; 183 184 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 185 int mWallpaperWidth; 186 int mWallpaperHeight; 187 WallpaperOffsetInterpolator mWallpaperOffset; 188 boolean mUpdateWallpaperOffsetImmediately = false; 189 private Runnable mDelayedResizeRunnable; 190 private Runnable mDelayedSnapToPageRunnable; 191 private int mDisplayWidth; 192 private int mDisplayHeight; 193 private boolean mIsStaticWallpaper; 194 private int mWallpaperTravelWidth; 195 196 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 197 private static final int FOLDER_CREATION_TIMEOUT = 0; 198 private static final int REORDER_TIMEOUT = 250; 199 private final Alarm mFolderCreationAlarm = new Alarm(); 200 private final Alarm mReorderAlarm = new Alarm(); 201 private FolderRingAnimator mDragFolderRingAnimator = null; 202 private FolderIcon mDragOverFolderIcon = null; 203 private boolean mCreateUserFolderOnDrop = false; 204 private boolean mAddToExistingFolderOnDrop = false; 205 private DropTarget.DragEnforcer mDragEnforcer; 206 207 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 208 private float mXDown; 209 private float mYDown; 210 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 211 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 212 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 213 214 // Relating to the animation of items being dropped externally 215 public static final int ANIMATE_INTO_POSITION_AND_DISAPPEAR = 0; 216 public static final int ANIMATE_INTO_POSITION_AND_REMAIN = 1; 217 public static final int ANIMATE_INTO_POSITION_AND_RESIZE = 2; 218 public static final int COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION = 3; 219 public static final int CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION = 4; 220 221 // Related to dragging, folder creation and reordering 222 private static final int DRAG_MODE_NONE = 0; 223 private static final int DRAG_MODE_CREATE_FOLDER = 1; 224 private static final int DRAG_MODE_ADD_TO_FOLDER = 2; 225 private static final int DRAG_MODE_REORDER = 3; 226 private int mDragMode = DRAG_MODE_NONE; 227 private int mLastReorderX = -1; 228 private int mLastReorderY = -1; 229 230 // These variables are used for storing the initial and final values during workspace animations 231 private int mSavedScrollX; 232 private float mSavedRotationY; 233 private float mSavedTranslationX; 234 private float mCurrentScaleX; 235 private float mCurrentScaleY; 236 private float mCurrentRotationY; 237 private float mCurrentTranslationX; 238 private float mCurrentTranslationY; 239 private float[] mOldTranslationXs; 240 private float[] mOldTranslationYs; 241 private float[] mOldScaleXs; 242 private float[] mOldScaleYs; 243 private float[] mOldBackgroundAlphas; 244 private float[] mOldBackgroundAlphaMultipliers; 245 private float[] mOldAlphas; 246 private float[] mOldRotationYs; 247 private float[] mNewTranslationXs; 248 private float[] mNewTranslationYs; 249 private float[] mNewScaleXs; 250 private float[] mNewScaleYs; 251 private float[] mNewBackgroundAlphas; 252 private float[] mNewBackgroundAlphaMultipliers; 253 private float[] mNewAlphas; 254 private float[] mNewRotationYs; 255 private float mTransitionProgress; 256 257 /** 258 * Used to inflate the Workspace from XML. 259 * 260 * @param context The application's context. 261 * @param attrs The attributes set containing the Workspace's customization values. 262 */ 263 public Workspace(Context context, AttributeSet attrs) { 264 this(context, attrs, 0); 265 } 266 267 /** 268 * Used to inflate the Workspace from XML. 269 * 270 * @param context The application's context. 271 * @param attrs The attributes set containing the Workspace's customization values. 272 * @param defStyle Unused. 273 */ 274 public Workspace(Context context, AttributeSet attrs, int defStyle) { 275 super(context, attrs, defStyle); 276 mContentIsRefreshable = false; 277 278 mDragEnforcer = new DropTarget.DragEnforcer(context); 279 // With workspace, data is available straight from the get-go 280 setDataIsReady(); 281 282 final Resources res = getResources(); 283 mFadeInAdjacentScreens = res.getBoolean(R.bool.config_workspaceFadeAdjacentScreens); 284 mWallpaperManager = WallpaperManager.getInstance(context); 285 286 int cellCountX = DEFAULT_CELL_COUNT_X; 287 int cellCountY = DEFAULT_CELL_COUNT_Y; 288 289 TypedArray a = context.obtainStyledAttributes(attrs, 290 R.styleable.Workspace, defStyle, 0); 291 292 if (LauncherApplication.isScreenLarge()) { 293 // Determine number of rows/columns dynamically 294 // TODO: This code currently fails on tablets with an aspect ratio < 1.3. 295 // Around that ratio we should make cells the same size in portrait and 296 // landscape 297 TypedArray actionBarSizeTypedArray = 298 context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize }); 299 DisplayMetrics displayMetrics = res.getDisplayMetrics(); 300 final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); 301 final float systemBarHeight = res.getDimension(R.dimen.status_bar_height); 302 final float smallestScreenDim = res.getConfiguration().smallestScreenWidthDp * 303 displayMetrics.density; 304 305 cellCountX = 1; 306 while (CellLayout.widthInPortrait(res, cellCountX + 1) <= smallestScreenDim) { 307 cellCountX++; 308 } 309 310 cellCountY = 1; 311 while (actionBarHeight + CellLayout.heightInLandscape(res, cellCountY + 1) 312 <= smallestScreenDim - systemBarHeight) { 313 cellCountY++; 314 } 315 } 316 317 mSpringLoadedShrinkFactor = 318 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 319 320 // if the value is manually specified, use that instead 321 cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX); 322 cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY); 323 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 324 a.recycle(); 325 326 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 327 setHapticFeedbackEnabled(false); 328 329 mLauncher = (Launcher) context; 330 initWorkspace(); 331 332 // Disable multitouch across the workspace/all apps/customize tray 333 setMotionEventSplittingEnabled(true); 334 } 335 336 // estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each 337 // dimension if unsuccessful 338 public int[] estimateItemSize(int hSpan, int vSpan, 339 ItemInfo itemInfo, boolean springLoaded) { 340 int[] size = new int[2]; 341 if (getChildCount() > 0) { 342 CellLayout cl = (CellLayout) mLauncher.getWorkspace().getChildAt(0); 343 Rect r = estimateItemPosition(cl, itemInfo, 0, 0, hSpan, vSpan); 344 size[0] = r.width(); 345 size[1] = r.height(); 346 if (springLoaded) { 347 size[0] *= mSpringLoadedShrinkFactor; 348 size[1] *= mSpringLoadedShrinkFactor; 349 } 350 return size; 351 } else { 352 size[0] = Integer.MAX_VALUE; 353 size[1] = Integer.MAX_VALUE; 354 return size; 355 } 356 } 357 public Rect estimateItemPosition(CellLayout cl, ItemInfo pendingInfo, 358 int hCell, int vCell, int hSpan, int vSpan) { 359 Rect r = new Rect(); 360 cl.cellToRect(hCell, vCell, hSpan, vSpan, r); 361 return r; 362 } 363 364 public void buildPageHardwareLayers() { 365 if (getWindowToken() != null) { 366 final int childCount = getChildCount(); 367 for (int i = 0; i < childCount; i++) { 368 CellLayout cl = (CellLayout) getChildAt(i); 369 cl.getShortcutsAndWidgets().buildLayer(); 370 } 371 } 372 } 373 374 public void onDragStart(DragSource source, Object info, int dragAction) { 375 mIsDragOccuring = true; 376 updateChildrenLayersEnabled(); 377 mLauncher.lockScreenOrientationOnLargeUI(); 378 } 379 380 public void onDragEnd() { 381 mIsDragOccuring = false; 382 updateChildrenLayersEnabled(); 383 mLauncher.unlockScreenOrientationOnLargeUI(); 384 } 385 386 /** 387 * Initializes various states for this workspace. 388 */ 389 protected void initWorkspace() { 390 Context context = getContext(); 391 mCurrentPage = mDefaultPage; 392 Launcher.setScreen(mCurrentPage); 393 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 394 mIconCache = app.getIconCache(); 395 setWillNotDraw(false); 396 setChildrenDrawnWithCacheEnabled(true); 397 398 final Resources res = getResources(); 399 try { 400 mBackground = res.getDrawable(R.drawable.apps_customize_bg); 401 } catch (Resources.NotFoundException e) { 402 // In this case, we will skip drawing background protection 403 } 404 405 mWallpaperOffset = new WallpaperOffsetInterpolator(); 406 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 407 mDisplayWidth = display.getWidth(); 408 mDisplayHeight = display.getHeight(); 409 mWallpaperTravelWidth = (int) (mDisplayWidth * 410 wallpaperTravelToScreenWidthRatio(mDisplayWidth, mDisplayHeight)); 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 protected void onViewAdded(View child) { 423 super.onViewAdded(child); 424 if (!(child instanceof CellLayout)) { 425 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 426 } 427 CellLayout cl = ((CellLayout) child); 428 cl.setOnInterceptTouchListener(this); 429 cl.setClickable(true); 430 cl.enableHardwareLayers(); 431 } 432 433 /** 434 * @return The open folder on the current screen, or null if there is none 435 */ 436 Folder getOpenFolder() { 437 DragLayer dragLayer = mLauncher.getDragLayer(); 438 int count = dragLayer.getChildCount(); 439 for (int i = 0; i < count; i++) { 440 View child = dragLayer.getChildAt(i); 441 if (child instanceof Folder) { 442 Folder folder = (Folder) child; 443 if (folder.getInfo().opened) 444 return folder; 445 } 446 } 447 return null; 448 } 449 450 boolean isTouchActive() { 451 return mTouchState != TOUCH_STATE_REST; 452 } 453 454 /** 455 * Adds the specified child in the specified screen. The position and dimension of 456 * the child are defined by x, y, spanX and spanY. 457 * 458 * @param child The child to add in one of the workspace's screens. 459 * @param screen The screen in which to add the child. 460 * @param x The X position of the child in the screen's grid. 461 * @param y The Y position of the child in the screen's grid. 462 * @param spanX The number of cells spanned horizontally by the child. 463 * @param spanY The number of cells spanned vertically by the child. 464 */ 465 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY) { 466 addInScreen(child, container, screen, x, y, spanX, spanY, false); 467 } 468 469 /** 470 * Adds the specified child in the specified screen. The position and dimension of 471 * the child are defined by x, y, spanX and spanY. 472 * 473 * @param child The child to add in one of the workspace's screens. 474 * @param screen The screen in which to add the child. 475 * @param x The X position of the child in the screen's grid. 476 * @param y The Y position of the child in the screen's grid. 477 * @param spanX The number of cells spanned horizontally by the child. 478 * @param spanY The number of cells spanned vertically by the child. 479 * @param insert When true, the child is inserted at the beginning of the children list. 480 */ 481 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY, 482 boolean insert) { 483 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 484 if (screen < 0 || screen >= getChildCount()) { 485 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 486 + " (was " + screen + "); skipping child"); 487 return; 488 } 489 } 490 491 final CellLayout layout; 492 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 493 layout = mLauncher.getHotseat().getLayout(); 494 child.setOnKeyListener(null); 495 496 // Hide folder title in the hotseat 497 if (child instanceof FolderIcon) { 498 ((FolderIcon) child).setTextVisible(false); 499 } 500 501 if (screen < 0) { 502 screen = mLauncher.getHotseat().getOrderInHotseat(x, y); 503 } else { 504 // Note: We do this to ensure that the hotseat is always laid out in the orientation 505 // of the hotseat in order regardless of which orientation they were added 506 x = mLauncher.getHotseat().getCellXFromOrder(screen); 507 y = mLauncher.getHotseat().getCellYFromOrder(screen); 508 } 509 } else { 510 // Show folder title if not in the hotseat 511 if (child instanceof FolderIcon) { 512 ((FolderIcon) child).setTextVisible(true); 513 } 514 515 layout = (CellLayout) getChildAt(screen); 516 child.setOnKeyListener(new IconKeyEventListener()); 517 } 518 519 LayoutParams genericLp = child.getLayoutParams(); 520 CellLayout.LayoutParams lp; 521 if (genericLp == null || !(genericLp instanceof CellLayout.LayoutParams)) { 522 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 523 } else { 524 lp = (CellLayout.LayoutParams) genericLp; 525 lp.cellX = x; 526 lp.cellY = y; 527 lp.cellHSpan = spanX; 528 lp.cellVSpan = spanY; 529 } 530 531 if (spanX < 0 && spanY < 0) { 532 lp.isLockedToGrid = false; 533 } 534 535 // Get the canonical child id to uniquely represent this view in this screen 536 int childId = LauncherModel.getCellLayoutChildId(container, screen, x, y, spanX, spanY); 537 boolean markCellsAsOccupied = !(child instanceof Folder); 538 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 539 // TODO: This branch occurs when the workspace is adding views 540 // outside of the defined grid 541 // maybe we should be deleting these items from the LauncherModel? 542 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 543 } 544 545 if (!(child instanceof Folder)) { 546 child.setHapticFeedbackEnabled(false); 547 child.setOnLongClickListener(mLongClickListener); 548 } 549 if (child instanceof DropTarget) { 550 mDragController.addDropTarget((DropTarget) child); 551 } 552 } 553 554 /** 555 * Check if the point (x, y) hits a given page. 556 */ 557 private boolean hitsPage(int index, float x, float y) { 558 final View page = getChildAt(index); 559 if (page != null) { 560 float[] localXY = { x, y }; 561 mapPointFromSelfToChild(page, localXY); 562 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 563 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 564 } 565 return false; 566 } 567 568 @Override 569 protected boolean hitsPreviousPage(float x, float y) { 570 // mNextPage is set to INVALID_PAGE whenever we are stationary. 571 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 572 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 573 574 // Only allow tap to next page on large devices, where there's significant margin outside 575 // the active workspace 576 return LauncherApplication.isScreenLarge() && hitsPage(current - 1, x, y); 577 } 578 579 @Override 580 protected boolean hitsNextPage(float x, float y) { 581 // mNextPage is set to INVALID_PAGE whenever we are stationary. 582 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 583 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 584 585 // Only allow tap to next page on large devices, where there's significant margin outside 586 // the active workspace 587 return LauncherApplication.isScreenLarge() && hitsPage(current + 1, x, y); 588 } 589 590 /** 591 * Called directly from a CellLayout (not by the framework), after we've been added as a 592 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 593 * that it should intercept touch events, which is not something that is normally supported. 594 */ 595 @Override 596 public boolean onTouch(View v, MotionEvent event) { 597 return (isSmall() || !isFinishedSwitchingState()); 598 } 599 600 public boolean isSwitchingState() { 601 return mIsSwitchingState; 602 } 603 604 /** This differs from isSwitchingState in that we take into account how far the transition 605 * has completed. */ 606 public boolean isFinishedSwitchingState() { 607 return !mIsSwitchingState || (mTransitionProgress > 0.5f); 608 } 609 610 protected void onWindowVisibilityChanged (int visibility) { 611 mLauncher.onWindowVisibilityChanged(visibility); 612 } 613 614 @Override 615 public boolean dispatchUnhandledMove(View focused, int direction) { 616 if (isSmall() || !isFinishedSwitchingState()) { 617 // when the home screens are shrunken, shouldn't allow side-scrolling 618 return false; 619 } 620 return super.dispatchUnhandledMove(focused, direction); 621 } 622 623 @Override 624 public boolean onInterceptTouchEvent(MotionEvent ev) { 625 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 626 case MotionEvent.ACTION_DOWN: 627 mXDown = ev.getX(); 628 mYDown = ev.getY(); 629 break; 630 case MotionEvent.ACTION_POINTER_UP: 631 case MotionEvent.ACTION_UP: 632 if (mTouchState == TOUCH_STATE_REST) { 633 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 634 if (!currentPage.lastDownOnOccupiedCell()) { 635 onWallpaperTap(ev); 636 } 637 } 638 } 639 return super.onInterceptTouchEvent(ev); 640 } 641 642 @Override 643 protected void determineScrollingStart(MotionEvent ev) { 644 if (isSmall()) return; 645 if (!isFinishedSwitchingState()) return; 646 647 float deltaX = Math.abs(ev.getX() - mXDown); 648 float deltaY = Math.abs(ev.getY() - mYDown); 649 650 if (Float.compare(deltaX, 0f) == 0) return; 651 652 float slope = deltaY / deltaX; 653 float theta = (float) Math.atan(slope); 654 655 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 656 cancelCurrentPageLongPress(); 657 } 658 659 if (theta > MAX_SWIPE_ANGLE) { 660 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 661 return; 662 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 663 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 664 // increase the touch slop to make it harder to begin scrolling the workspace. This 665 // results in vertically scrolling widgets to more easily. The higher the angle, the 666 // more we increase touch slop. 667 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 668 float extraRatio = (float) 669 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 670 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 671 } else { 672 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 673 super.determineScrollingStart(ev); 674 } 675 } 676 677 @Override 678 protected boolean isScrollingIndicatorEnabled() { 679 return super.isScrollingIndicatorEnabled() && (mState != State.SPRING_LOADED); 680 } 681 682 protected void onPageBeginMoving() { 683 super.onPageBeginMoving(); 684 685 if (isHardwareAccelerated()) { 686 updateChildrenLayersEnabled(); 687 } else { 688 if (mNextPage != INVALID_PAGE) { 689 // we're snapping to a particular screen 690 enableChildrenCache(mCurrentPage, mNextPage); 691 } else { 692 // this is when user is actively dragging a particular screen, they might 693 // swipe it either left or right (but we won't advance by more than one screen) 694 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 695 } 696 } 697 698 // Only show page outlines as we pan if we are on large screen 699 if (LauncherApplication.isScreenLarge()) { 700 showOutlines(); 701 mIsStaticWallpaper = mWallpaperManager.getWallpaperInfo() == null; 702 } 703 704 // If we are not fading in adjacent screens, we still need to restore the alpha in case the 705 // user scrolls while we are transitioning (should not affect dispatchDraw optimizations) 706 if (!mFadeInAdjacentScreens) { 707 for (int i = 0; i < getChildCount(); ++i) { 708 ((CellLayout) getPageAt(i)).setShortcutAndWidgetAlpha(1f); 709 } 710 } 711 712 // Show the scroll indicator as you pan the page 713 showScrollingIndicator(false); 714 } 715 716 protected void onPageEndMoving() { 717 super.onPageEndMoving(); 718 719 if (isHardwareAccelerated()) { 720 updateChildrenLayersEnabled(); 721 } else { 722 clearChildrenCache(); 723 } 724 725 726 if (mDragController.isDragging()) { 727 if (isSmall()) { 728 // If we are in springloaded mode, then force an event to check if the current touch 729 // is under a new page (to scroll to) 730 mDragController.forceMoveEvent(); 731 } 732 } else { 733 // If we are not mid-dragging, hide the page outlines if we are on a large screen 734 if (LauncherApplication.isScreenLarge()) { 735 hideOutlines(); 736 } 737 738 // Hide the scroll indicator as you pan the page 739 if (!mDragController.isDragging()) { 740 hideScrollingIndicator(false); 741 } 742 } 743 mOverScrollMaxBackgroundAlpha = 0.0f; 744 mOverScrollPageIndex = -1; 745 746 if (mDelayedResizeRunnable != null) { 747 mDelayedResizeRunnable.run(); 748 mDelayedResizeRunnable = null; 749 } 750 751 if (mDelayedSnapToPageRunnable != null) { 752 mDelayedSnapToPageRunnable.run(); 753 mDelayedSnapToPageRunnable = null; 754 } 755 } 756 757 @Override 758 protected void notifyPageSwitchListener() { 759 super.notifyPageSwitchListener(); 760 Launcher.setScreen(mCurrentPage); 761 }; 762 763 // As a ratio of screen height, the total distance we want the parallax effect to span 764 // horizontally 765 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 766 float aspectRatio = width / (float) height; 767 768 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 769 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 770 // We will use these two data points to extrapolate how much the wallpaper parallax effect 771 // to span (ie travel) at any aspect ratio: 772 773 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 774 final float ASPECT_RATIO_PORTRAIT = 10/16f; 775 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 776 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 777 778 // To find out the desired width at different aspect ratios, we use the following two 779 // formulas, where the coefficient on x is the aspect ratio (width/height): 780 // (16/10)x + y = 1.5 781 // (10/16)x + y = 1.2 782 // We solve for x and y and end up with a final formula: 783 final float x = 784 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 785 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 786 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 787 return x * aspectRatio + y; 788 } 789 790 // The range of scroll values for Workspace 791 private int getScrollRange() { 792 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 793 } 794 795 protected void setWallpaperDimension() { 796 DisplayMetrics displayMetrics = new DisplayMetrics(); 797 mLauncher.getWindowManager().getDefaultDisplay().getRealMetrics(displayMetrics); 798 final int maxDim = Math.max(displayMetrics.widthPixels, displayMetrics.heightPixels); 799 final int minDim = Math.min(displayMetrics.widthPixels, displayMetrics.heightPixels); 800 801 // We need to ensure that there is enough extra space in the wallpaper for the intended 802 // parallax effects 803 if (LauncherApplication.isScreenLarge()) { 804 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 805 mWallpaperHeight = maxDim; 806 } else { 807 mWallpaperWidth = Math.max((int) (minDim * WALLPAPER_SCREENS_SPAN), maxDim); 808 mWallpaperHeight = maxDim; 809 } 810 new Thread("setWallpaperDimension") { 811 public void run() { 812 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 813 } 814 }.start(); 815 } 816 817 private float wallpaperOffsetForCurrentScroll() { 818 // Set wallpaper offset steps (1 / (number of screens - 1)) 819 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f); 820 821 // For the purposes of computing the scrollRange and overScrollOffset, we assume 822 // that mLayoutScale is 1. This means that when we're in spring-loaded mode, 823 // there's no discrepancy between the wallpaper offset for a given page. 824 float layoutScale = mLayoutScale; 825 mLayoutScale = 1f; 826 int scrollRange = getScrollRange(); 827 828 // Again, we adjust the wallpaper offset to be consistent between values of mLayoutScale 829 float adjustedScrollX = Math.max(0, Math.min(mScrollX, mMaxScrollX)); 830 adjustedScrollX *= mWallpaperScrollRatio; 831 mLayoutScale = layoutScale; 832 833 float scrollProgress = 834 adjustedScrollX / (float) scrollRange; 835 836 if (LauncherApplication.isScreenLarge() && mIsStaticWallpaper) { 837 // The wallpaper travel width is how far, from left to right, the wallpaper will move 838 // at this orientation. On tablets in portrait mode we don't move all the way to the 839 // edges of the wallpaper, or otherwise the parallax effect would be too strong. 840 int wallpaperTravelWidth = Math.min(mWallpaperTravelWidth, mWallpaperWidth); 841 842 float offsetInDips = wallpaperTravelWidth * scrollProgress + 843 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 844 float offset = offsetInDips / (float) mWallpaperWidth; 845 return offset; 846 } else { 847 return scrollProgress; 848 } 849 } 850 851 private void syncWallpaperOffsetWithScroll() { 852 final boolean enableWallpaperEffects = isHardwareAccelerated(); 853 if (enableWallpaperEffects) { 854 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 855 } 856 } 857 858 public void updateWallpaperOffsetImmediately() { 859 mUpdateWallpaperOffsetImmediately = true; 860 } 861 862 private void updateWallpaperOffsets() { 863 boolean updateNow = false; 864 boolean keepUpdating = true; 865 if (mUpdateWallpaperOffsetImmediately) { 866 updateNow = true; 867 keepUpdating = false; 868 mWallpaperOffset.jumpToFinal(); 869 mUpdateWallpaperOffsetImmediately = false; 870 } else { 871 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 872 } 873 if (updateNow) { 874 if (mWindowToken != null) { 875 mWallpaperManager.setWallpaperOffsets(mWindowToken, 876 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 877 } 878 } 879 if (keepUpdating) { 880 invalidate(); 881 } 882 } 883 884 @Override 885 protected void updateCurrentPageScroll() { 886 super.updateCurrentPageScroll(); 887 computeWallpaperScrollRatio(mCurrentPage); 888 } 889 890 @Override 891 protected void snapToPage(int whichPage) { 892 super.snapToPage(whichPage); 893 computeWallpaperScrollRatio(whichPage); 894 } 895 896 @Override 897 protected void snapToPage(int whichPage, int duration) { 898 super.snapToPage(whichPage, duration); 899 computeWallpaperScrollRatio(whichPage); 900 } 901 902 protected void snapToPage(int whichPage, Runnable r) { 903 if (mDelayedSnapToPageRunnable != null) { 904 mDelayedSnapToPageRunnable.run(); 905 } 906 mDelayedSnapToPageRunnable = r; 907 snapToPage(whichPage, SLOW_PAGE_SNAP_ANIMATION_DURATION); 908 } 909 910 private void computeWallpaperScrollRatio(int page) { 911 // Here, we determine what the desired scroll would be with and without a layout scale, 912 // and compute a ratio between the two. This allows us to adjust the wallpaper offset 913 // as though there is no layout scale. 914 float layoutScale = mLayoutScale; 915 int scaled = getChildOffset(page) - getRelativeChildOffset(page); 916 mLayoutScale = 1.0f; 917 float unscaled = getChildOffset(page) - getRelativeChildOffset(page); 918 mLayoutScale = layoutScale; 919 if (scaled > 0) { 920 mWallpaperScrollRatio = (1.0f * unscaled) / scaled; 921 } else { 922 mWallpaperScrollRatio = 1f; 923 } 924 } 925 926 class WallpaperOffsetInterpolator { 927 float mFinalHorizontalWallpaperOffset = 0.0f; 928 float mFinalVerticalWallpaperOffset = 0.5f; 929 float mHorizontalWallpaperOffset = 0.0f; 930 float mVerticalWallpaperOffset = 0.5f; 931 long mLastWallpaperOffsetUpdateTime; 932 boolean mIsMovingFast; 933 boolean mOverrideHorizontalCatchupConstant; 934 float mHorizontalCatchupConstant = 0.35f; 935 float mVerticalCatchupConstant = 0.35f; 936 937 public WallpaperOffsetInterpolator() { 938 } 939 940 public void setOverrideHorizontalCatchupConstant(boolean override) { 941 mOverrideHorizontalCatchupConstant = override; 942 } 943 944 public void setHorizontalCatchupConstant(float f) { 945 mHorizontalCatchupConstant = f; 946 } 947 948 public void setVerticalCatchupConstant(float f) { 949 mVerticalCatchupConstant = f; 950 } 951 952 public boolean computeScrollOffset() { 953 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 954 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 955 mIsMovingFast = false; 956 return false; 957 } 958 boolean isLandscape = mDisplayWidth > mDisplayHeight; 959 960 long currentTime = System.currentTimeMillis(); 961 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 962 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 963 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 964 965 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 966 if (!mIsMovingFast && xdiff > 0.07) { 967 mIsMovingFast = true; 968 } 969 970 float fractionToCatchUpIn1MsHorizontal; 971 if (mOverrideHorizontalCatchupConstant) { 972 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 973 } else if (mIsMovingFast) { 974 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 975 } else { 976 // slow 977 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 978 } 979 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 980 981 fractionToCatchUpIn1MsHorizontal /= 33f; 982 fractionToCatchUpIn1MsVertical /= 33f; 983 984 final float UPDATE_THRESHOLD = 0.00001f; 985 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 986 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 987 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 988 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 989 990 // Don't have any lag between workspace and wallpaper on non-large devices 991 if (!LauncherApplication.isScreenLarge() || jumpToFinalValue) { 992 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 993 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 994 } else { 995 float percentToCatchUpVertical = 996 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 997 float percentToCatchUpHorizontal = 998 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 999 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 1000 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 1001 } 1002 1003 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 1004 return true; 1005 } 1006 1007 public float getCurrX() { 1008 return mHorizontalWallpaperOffset; 1009 } 1010 1011 public float getFinalX() { 1012 return mFinalHorizontalWallpaperOffset; 1013 } 1014 1015 public float getCurrY() { 1016 return mVerticalWallpaperOffset; 1017 } 1018 1019 public float getFinalY() { 1020 return mFinalVerticalWallpaperOffset; 1021 } 1022 1023 public void setFinalX(float x) { 1024 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 1025 } 1026 1027 public void setFinalY(float y) { 1028 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 1029 } 1030 1031 public void jumpToFinal() { 1032 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 1033 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 1034 } 1035 } 1036 1037 @Override 1038 public void computeScroll() { 1039 super.computeScroll(); 1040 syncWallpaperOffsetWithScroll(); 1041 } 1042 1043 void showOutlines() { 1044 if (!isSmall() && !mIsSwitchingState) { 1045 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1046 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1047 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 1048 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 1049 mChildrenOutlineFadeInAnimation.start(); 1050 } 1051 } 1052 1053 void hideOutlines() { 1054 if (!isSmall() && !mIsSwitchingState) { 1055 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1056 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1057 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 1058 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 1059 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 1060 mChildrenOutlineFadeOutAnimation.start(); 1061 } 1062 } 1063 1064 public void showOutlinesTemporarily() { 1065 if (!mIsPageMoving && !isTouchActive()) { 1066 snapToPage(mCurrentPage); 1067 } 1068 } 1069 1070 public void setChildrenOutlineAlpha(float alpha) { 1071 mChildrenOutlineAlpha = alpha; 1072 for (int i = 0; i < getChildCount(); i++) { 1073 CellLayout cl = (CellLayout) getChildAt(i); 1074 cl.setBackgroundAlpha(alpha); 1075 } 1076 } 1077 1078 public float getChildrenOutlineAlpha() { 1079 return mChildrenOutlineAlpha; 1080 } 1081 1082 void disableBackground() { 1083 mDrawBackground = false; 1084 } 1085 void enableBackground() { 1086 mDrawBackground = true; 1087 } 1088 1089 private void animateBackgroundGradient(float finalAlpha, boolean animated) { 1090 if (mBackground == null) return; 1091 if (mBackgroundFadeInAnimation != null) { 1092 mBackgroundFadeInAnimation.cancel(); 1093 mBackgroundFadeInAnimation = null; 1094 } 1095 if (mBackgroundFadeOutAnimation != null) { 1096 mBackgroundFadeOutAnimation.cancel(); 1097 mBackgroundFadeOutAnimation = null; 1098 } 1099 float startAlpha = getBackgroundAlpha(); 1100 if (finalAlpha != startAlpha) { 1101 if (animated) { 1102 mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(startAlpha, finalAlpha); 1103 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1104 public void onAnimationUpdate(ValueAnimator animation) { 1105 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1106 } 1107 }); 1108 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1109 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1110 mBackgroundFadeOutAnimation.start(); 1111 } else { 1112 setBackgroundAlpha(finalAlpha); 1113 } 1114 } 1115 } 1116 1117 public void setBackgroundAlpha(float alpha) { 1118 if (alpha != mBackgroundAlpha) { 1119 mBackgroundAlpha = alpha; 1120 invalidate(); 1121 } 1122 } 1123 1124 public float getBackgroundAlpha() { 1125 return mBackgroundAlpha; 1126 } 1127 1128 /** 1129 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 1130 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 1131 * as being larger. This method computes what offset the rotated view should be translated 1132 * in order to minimize this perceived gap. 1133 * @param degrees Angle of the view 1134 * @param width Width of the view 1135 * @param height Height of the view 1136 * @return Offset to be used in a View.setTranslationX() call 1137 */ 1138 private float getOffsetXForRotation(float degrees, int width, int height) { 1139 mMatrix.reset(); 1140 mCamera.save(); 1141 mCamera.rotateY(Math.abs(degrees)); 1142 mCamera.getMatrix(mMatrix); 1143 mCamera.restore(); 1144 1145 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 1146 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 1147 mTempFloat2[0] = width; 1148 mTempFloat2[1] = height; 1149 mMatrix.mapPoints(mTempFloat2); 1150 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 1151 } 1152 1153 float backgroundAlphaInterpolator(float r) { 1154 float pivotA = 0.1f; 1155 float pivotB = 0.4f; 1156 if (r < pivotA) { 1157 return 0; 1158 } else if (r > pivotB) { 1159 return 1.0f; 1160 } else { 1161 return (r - pivotA)/(pivotB - pivotA); 1162 } 1163 } 1164 1165 float overScrollBackgroundAlphaInterpolator(float r) { 1166 float threshold = 0.08f; 1167 1168 if (r > mOverScrollMaxBackgroundAlpha) { 1169 mOverScrollMaxBackgroundAlpha = r; 1170 } else if (r < mOverScrollMaxBackgroundAlpha) { 1171 r = mOverScrollMaxBackgroundAlpha; 1172 } 1173 1174 return Math.min(r / threshold, 1.0f); 1175 } 1176 1177 private void screenScrolledLargeUI(int screenCenter) { 1178 if (isSwitchingState()) return; 1179 boolean isInOverscroll = false; 1180 for (int i = 0; i < getChildCount(); i++) { 1181 CellLayout cl = (CellLayout) getChildAt(i); 1182 if (cl != null) { 1183 float scrollProgress = getScrollProgress(screenCenter, cl, i); 1184 float rotation = WORKSPACE_ROTATION * scrollProgress; 1185 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1186 1187 // If the current page (i) is being over scrolled, we use a different 1188 // set of rules for setting the background alpha multiplier. 1189 if (!isSmall()) { 1190 if ((mOverScrollX < 0 && i == 0) || (mOverScrollX > mMaxScrollX && 1191 i == getChildCount() -1)) { 1192 isInOverscroll = true; 1193 rotation *= -1; 1194 cl.setBackgroundAlphaMultiplier( 1195 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 1196 mOverScrollPageIndex = i; 1197 cl.setOverScrollAmount(Math.abs(scrollProgress), i == 0); 1198 if (!mOverscrollTransformsSet) { 1199 mOverscrollTransformsSet = true; 1200 cl.setPivotX(cl.getMeasuredWidth() * (i == 0 ? 0.75f : 0.25f)); 1201 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1202 cl.setOverscrollTransformsDirty(true); 1203 } 1204 } else if (mOverScrollPageIndex != i) { 1205 cl.setBackgroundAlphaMultiplier( 1206 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1207 } 1208 } 1209 cl.setTranslationX(translationX); 1210 cl.setRotationY(rotation); 1211 if (mFadeInAdjacentScreens && !isSmall()) { 1212 float alpha = 1 - Math.abs(scrollProgress); 1213 cl.setShortcutAndWidgetAlpha(alpha); 1214 } 1215 } 1216 } 1217 if (mOverscrollTransformsSet && !isInOverscroll) { 1218 mOverscrollTransformsSet = false; 1219 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1220 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1221 } 1222 invalidate(); 1223 } 1224 1225 private void screenScrolledStandardUI(int screenCenter) { 1226 if (mOverScrollX < 0 || mOverScrollX > mMaxScrollX) { 1227 int index = mOverScrollX < 0 ? 0 : getChildCount() - 1; 1228 CellLayout cl = (CellLayout) getChildAt(index); 1229 float scrollProgress = getScrollProgress(screenCenter, cl, index); 1230 cl.setOverScrollAmount(Math.abs(scrollProgress), index == 0); 1231 float rotation = - WORKSPACE_OVERSCROLL_ROTATION * scrollProgress; 1232 cl.setRotationY(rotation); 1233 setFadeForOverScroll(Math.abs(scrollProgress)); 1234 if (!mOverscrollTransformsSet) { 1235 mOverscrollTransformsSet = true; 1236 cl.setCameraDistance(mDensity * CAMERA_DISTANCE); 1237 cl.setPivotX(cl.getMeasuredWidth() * (index == 0 ? 0.75f : 0.25f)); 1238 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1239 cl.setOverscrollTransformsDirty(true); 1240 } 1241 } else { 1242 if (mOverscrollFade != 0) { 1243 setFadeForOverScroll(0); 1244 } 1245 if (mOverscrollTransformsSet) { 1246 mOverscrollTransformsSet = false; 1247 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1248 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1249 } 1250 } 1251 } 1252 1253 @Override 1254 protected void screenScrolled(int screenCenter) { 1255 if (LauncherApplication.isScreenLarge()) { 1256 // We don't call super.screenScrolled() here because we handle the adjacent pages alpha 1257 // ourselves (for efficiency), and there are no scrolling indicators to update. 1258 screenScrolledLargeUI(screenCenter); 1259 } else { 1260 super.screenScrolled(screenCenter); 1261 screenScrolledStandardUI(screenCenter); 1262 } 1263 } 1264 1265 @Override 1266 protected void overScroll(float amount) { 1267 if (LauncherApplication.isScreenLarge()) { 1268 dampedOverScroll(amount); 1269 } else { 1270 acceleratedOverScroll(amount); 1271 } 1272 } 1273 1274 protected void onAttachedToWindow() { 1275 super.onAttachedToWindow(); 1276 mWindowToken = getWindowToken(); 1277 computeScroll(); 1278 mDragController.setWindowToken(mWindowToken); 1279 } 1280 1281 protected void onDetachedFromWindow() { 1282 mWindowToken = null; 1283 } 1284 1285 @Override 1286 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1287 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1288 mUpdateWallpaperOffsetImmediately = true; 1289 } 1290 super.onLayout(changed, left, top, right, bottom); 1291 } 1292 1293 @Override 1294 protected void onDraw(Canvas canvas) { 1295 updateWallpaperOffsets(); 1296 1297 // Draw the background gradient if necessary 1298 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1299 int alpha = (int) (mBackgroundAlpha * 255); 1300 mBackground.setAlpha(alpha); 1301 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1302 getMeasuredHeight()); 1303 mBackground.draw(canvas); 1304 } 1305 1306 super.onDraw(canvas); 1307 } 1308 1309 boolean isDrawingBackgroundGradient() { 1310 return (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground); 1311 } 1312 1313 @Override 1314 protected void dispatchDraw(Canvas canvas) { 1315 super.dispatchDraw(canvas); 1316 1317 if (mInScrollArea && !LauncherApplication.isScreenLarge()) { 1318 final int width = getWidth(); 1319 final int height = getHeight(); 1320 final int pageHeight = getChildAt(0).getHeight(); 1321 1322 // Set the height of the outline to be the height of the page 1323 final int offset = (height - pageHeight - mPaddingTop - mPaddingBottom) / 2; 1324 final int paddingTop = mPaddingTop + offset; 1325 final int paddingBottom = mPaddingBottom + offset; 1326 1327 final int page = (mNextPage != INVALID_PAGE ? mNextPage : mCurrentPage); 1328 final CellLayout leftPage = (CellLayout) getChildAt(page - 1); 1329 final CellLayout rightPage = (CellLayout) getChildAt(page + 1); 1330 1331 if (leftPage != null && leftPage.getIsDragOverlapping()) { 1332 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left_holo); 1333 d.setBounds(mScrollX, paddingTop, mScrollX + d.getIntrinsicWidth(), 1334 height - paddingBottom); 1335 d.draw(canvas); 1336 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 1337 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right_holo); 1338 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), paddingTop, mScrollX + width, 1339 height - paddingBottom); 1340 d.draw(canvas); 1341 } 1342 } 1343 } 1344 1345 @Override 1346 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1347 if (!mLauncher.isAllAppsVisible()) { 1348 final Folder openFolder = getOpenFolder(); 1349 if (openFolder != null) { 1350 return openFolder.requestFocus(direction, previouslyFocusedRect); 1351 } else { 1352 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1353 } 1354 } 1355 return false; 1356 } 1357 1358 @Override 1359 public int getDescendantFocusability() { 1360 if (isSmall()) { 1361 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1362 } 1363 return super.getDescendantFocusability(); 1364 } 1365 1366 @Override 1367 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1368 if (!mLauncher.isAllAppsVisible()) { 1369 final Folder openFolder = getOpenFolder(); 1370 if (openFolder != null) { 1371 openFolder.addFocusables(views, direction); 1372 } else { 1373 super.addFocusables(views, direction, focusableMode); 1374 } 1375 } 1376 } 1377 1378 public boolean isSmall() { 1379 return mState == State.SMALL || mState == State.SPRING_LOADED; 1380 } 1381 1382 void enableChildrenCache(int fromPage, int toPage) { 1383 if (fromPage > toPage) { 1384 final int temp = fromPage; 1385 fromPage = toPage; 1386 toPage = temp; 1387 } 1388 1389 final int screenCount = getChildCount(); 1390 1391 fromPage = Math.max(fromPage, 0); 1392 toPage = Math.min(toPage, screenCount - 1); 1393 1394 for (int i = fromPage; i <= toPage; i++) { 1395 final CellLayout layout = (CellLayout) getChildAt(i); 1396 layout.setChildrenDrawnWithCacheEnabled(true); 1397 layout.setChildrenDrawingCacheEnabled(true); 1398 } 1399 } 1400 1401 void clearChildrenCache() { 1402 final int screenCount = getChildCount(); 1403 for (int i = 0; i < screenCount; i++) { 1404 final CellLayout layout = (CellLayout) getChildAt(i); 1405 layout.setChildrenDrawnWithCacheEnabled(false); 1406 // In software mode, we don't want the items to continue to be drawn into bitmaps 1407 if (!isHardwareAccelerated()) { 1408 layout.setChildrenDrawingCacheEnabled(false); 1409 } 1410 } 1411 } 1412 1413 private void updateChildrenLayersEnabled() { 1414 boolean small = mState == State.SMALL || mIsSwitchingState; 1415 boolean enableChildrenLayers = small || mAnimatingViewIntoPlace || isPageMoving(); 1416 1417 if (enableChildrenLayers != mChildrenLayersEnabled) { 1418 mChildrenLayersEnabled = enableChildrenLayers; 1419 for (int i = 0; i < getPageCount(); i++) { 1420 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(mChildrenLayersEnabled); 1421 } 1422 } 1423 } 1424 1425 protected void onWallpaperTap(MotionEvent ev) { 1426 final int[] position = mTempCell; 1427 getLocationOnScreen(position); 1428 1429 int pointerIndex = ev.getActionIndex(); 1430 position[0] += (int) ev.getX(pointerIndex); 1431 position[1] += (int) ev.getY(pointerIndex); 1432 1433 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1434 ev.getAction() == MotionEvent.ACTION_UP 1435 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1436 position[0], position[1], 0, null); 1437 } 1438 1439 /* 1440 * This interpolator emulates the rate at which the perceived scale of an object changes 1441 * as its distance from a camera increases. When this interpolator is applied to a scale 1442 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1443 * from the camera. 1444 */ 1445 static class ZInterpolator implements TimeInterpolator { 1446 private float focalLength; 1447 1448 public ZInterpolator(float foc) { 1449 focalLength = foc; 1450 } 1451 1452 public float getInterpolation(float input) { 1453 return (1.0f - focalLength / (focalLength + input)) / 1454 (1.0f - focalLength / (focalLength + 1.0f)); 1455 } 1456 } 1457 1458 /* 1459 * The exact reverse of ZInterpolator. 1460 */ 1461 static class InverseZInterpolator implements TimeInterpolator { 1462 private ZInterpolator zInterpolator; 1463 public InverseZInterpolator(float foc) { 1464 zInterpolator = new ZInterpolator(foc); 1465 } 1466 public float getInterpolation(float input) { 1467 return 1 - zInterpolator.getInterpolation(1 - input); 1468 } 1469 } 1470 1471 /* 1472 * ZInterpolator compounded with an ease-out. 1473 */ 1474 static class ZoomOutInterpolator implements TimeInterpolator { 1475 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(0.75f); 1476 private final ZInterpolator zInterpolator = new ZInterpolator(0.13f); 1477 1478 public float getInterpolation(float input) { 1479 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1480 } 1481 } 1482 1483 /* 1484 * InvereZInterpolator compounded with an ease-out. 1485 */ 1486 static class ZoomInInterpolator implements TimeInterpolator { 1487 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1488 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1489 1490 public float getInterpolation(float input) { 1491 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1492 } 1493 } 1494 1495 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1496 1497 /* 1498 * 1499 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1500 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1501 * 1502 * These methods mark the appropriate pages as accepting drops (which alters their visual 1503 * appearance). 1504 * 1505 */ 1506 public void onDragStartedWithItem(View v) { 1507 final Canvas canvas = new Canvas(); 1508 1509 // The outline is used to visualize where the item will land if dropped 1510 mDragOutline = createDragOutline(v, canvas, DRAG_BITMAP_PADDING); 1511 } 1512 1513 public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, Paint alphaClipPaint) { 1514 final Canvas canvas = new Canvas(); 1515 1516 int[] size = estimateItemSize(info.spanX, info.spanY, info, false); 1517 1518 // The outline is used to visualize where the item will land if dropped 1519 mDragOutline = createDragOutline(b, canvas, DRAG_BITMAP_PADDING, size[0], 1520 size[1], alphaClipPaint); 1521 } 1522 1523 public void exitWidgetResizeMode() { 1524 DragLayer dragLayer = mLauncher.getDragLayer(); 1525 dragLayer.clearAllResizeFrames(); 1526 } 1527 1528 private void initAnimationArrays() { 1529 final int childCount = getChildCount(); 1530 if (mOldTranslationXs != null) return; 1531 mOldTranslationXs = new float[childCount]; 1532 mOldTranslationYs = new float[childCount]; 1533 mOldScaleXs = new float[childCount]; 1534 mOldScaleYs = new float[childCount]; 1535 mOldBackgroundAlphas = new float[childCount]; 1536 mOldBackgroundAlphaMultipliers = new float[childCount]; 1537 mOldAlphas = new float[childCount]; 1538 mOldRotationYs = new float[childCount]; 1539 mNewTranslationXs = new float[childCount]; 1540 mNewTranslationYs = new float[childCount]; 1541 mNewScaleXs = new float[childCount]; 1542 mNewScaleYs = new float[childCount]; 1543 mNewBackgroundAlphas = new float[childCount]; 1544 mNewBackgroundAlphaMultipliers = new float[childCount]; 1545 mNewAlphas = new float[childCount]; 1546 mNewRotationYs = new float[childCount]; 1547 } 1548 1549 Animator getChangeStateAnimation(final State state, boolean animated) { 1550 return getChangeStateAnimation(state, animated, 0); 1551 } 1552 1553 Animator getChangeStateAnimation(final State state, boolean animated, int delay) { 1554 if (mState == state) { 1555 return null; 1556 } 1557 1558 // Initialize animation arrays for the first time if necessary 1559 initAnimationArrays(); 1560 1561 AnimatorSet anim = animated ? new AnimatorSet() : null; 1562 1563 // Stop any scrolling, move to the current page right away 1564 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1565 1566 final State oldState = mState; 1567 final boolean oldStateIsNormal = (oldState == State.NORMAL); 1568 final boolean oldStateIsSpringLoaded = (oldState == State.SPRING_LOADED); 1569 final boolean oldStateIsSmall = (oldState == State.SMALL); 1570 mState = state; 1571 final boolean stateIsNormal = (state == State.NORMAL); 1572 final boolean stateIsSpringLoaded = (state == State.SPRING_LOADED); 1573 final boolean stateIsSmall = (state == State.SMALL); 1574 float finalScaleFactor = 1.0f; 1575 float finalBackgroundAlpha = stateIsSpringLoaded ? 1.0f : 0f; 1576 float translationX = 0; 1577 float translationY = 0; 1578 boolean zoomIn = true; 1579 1580 if (state != State.NORMAL) { 1581 finalScaleFactor = mSpringLoadedShrinkFactor - (stateIsSmall ? 0.1f : 0); 1582 if (oldStateIsNormal && stateIsSmall) { 1583 zoomIn = false; 1584 setLayoutScale(finalScaleFactor); 1585 updateChildrenLayersEnabled(); 1586 } else { 1587 finalBackgroundAlpha = 1.0f; 1588 setLayoutScale(finalScaleFactor); 1589 } 1590 } else { 1591 setLayoutScale(1.0f); 1592 } 1593 1594 final int duration = zoomIn ? 1595 getResources().getInteger(R.integer.config_workspaceUnshrinkTime) : 1596 getResources().getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1597 for (int i = 0; i < getChildCount(); i++) { 1598 final CellLayout cl = (CellLayout) getChildAt(i); 1599 float rotation = 0f; 1600 float initialAlpha = cl.getAlpha(); 1601 float finalAlphaMultiplierValue = 1f; 1602 float finalAlpha = (!mFadeInAdjacentScreens || stateIsSpringLoaded || 1603 (i == mCurrentPage)) ? 1f : 0f; 1604 1605 // Determine the pages alpha during the state transition 1606 if ((oldStateIsSmall && stateIsNormal) || 1607 (oldStateIsNormal && stateIsSmall)) { 1608 // To/from workspace - only show the current page unless the transition is not 1609 // animated and the animation end callback below doesn't run; 1610 // or, if we're in spring-loaded mode 1611 if (i == mCurrentPage || !animated || oldStateIsSpringLoaded) { 1612 finalAlpha = 1f; 1613 finalAlphaMultiplierValue = 0f; 1614 } else { 1615 initialAlpha = 0f; 1616 finalAlpha = 0f; 1617 } 1618 } 1619 1620 // Update the rotation of the screen (don't apply rotation on Phone UI) 1621 if (LauncherApplication.isScreenLarge()) { 1622 if (i < mCurrentPage) { 1623 rotation = WORKSPACE_ROTATION; 1624 } else if (i > mCurrentPage) { 1625 rotation = -WORKSPACE_ROTATION; 1626 } 1627 } 1628 1629 // If the screen is not xlarge, then don't rotate the CellLayouts 1630 // NOTE: If we don't update the side pages alpha, then we should not hide the side 1631 // pages. see unshrink(). 1632 if (LauncherApplication.isScreenLarge()) { 1633 translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1634 } 1635 1636 mOldAlphas[i] = initialAlpha; 1637 mNewAlphas[i] = finalAlpha; 1638 if (animated) { 1639 mOldTranslationXs[i] = cl.getTranslationX(); 1640 mOldTranslationYs[i] = cl.getTranslationY(); 1641 mOldScaleXs[i] = cl.getScaleX(); 1642 mOldScaleYs[i] = cl.getScaleY(); 1643 mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1644 mOldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1645 mOldRotationYs[i] = cl.getRotationY(); 1646 1647 mNewTranslationXs[i] = translationX; 1648 mNewTranslationYs[i] = translationY; 1649 mNewScaleXs[i] = finalScaleFactor; 1650 mNewScaleYs[i] = finalScaleFactor; 1651 mNewBackgroundAlphas[i] = finalBackgroundAlpha; 1652 mNewBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1653 mNewRotationYs[i] = rotation; 1654 } else { 1655 cl.setTranslationX(translationX); 1656 cl.setTranslationY(translationY); 1657 cl.setScaleX(finalScaleFactor); 1658 cl.setScaleY(finalScaleFactor); 1659 cl.setBackgroundAlpha(finalBackgroundAlpha); 1660 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1661 cl.setShortcutAndWidgetAlpha(finalAlpha); 1662 cl.setRotationY(rotation); 1663 } 1664 } 1665 1666 if (animated) { 1667 for (int index = 0; index < getChildCount(); index++) { 1668 final int i = index; 1669 final CellLayout cl = (CellLayout) getChildAt(i); 1670 if (mOldAlphas[i] == 0 && mNewAlphas[i] == 0) { 1671 cl.setTranslationX(mNewTranslationXs[i]); 1672 cl.setTranslationY(mNewTranslationYs[i]); 1673 cl.setScaleX(mNewScaleXs[i]); 1674 cl.setScaleY(mNewScaleYs[i]); 1675 cl.setBackgroundAlpha(mNewBackgroundAlphas[i]); 1676 cl.setBackgroundAlphaMultiplier(mNewBackgroundAlphaMultipliers[i]); 1677 cl.setShortcutAndWidgetAlpha(mNewAlphas[i]); 1678 cl.setRotationY(mNewRotationYs[i]); 1679 } else { 1680 LauncherViewPropertyAnimator a = new LauncherViewPropertyAnimator(cl); 1681 a.translationX(mNewTranslationXs[i]) 1682 .translationY(mNewTranslationYs[i]) 1683 .scaleX(mNewScaleXs[i]) 1684 .scaleY(mNewScaleYs[i]) 1685 .setDuration(duration) 1686 .setInterpolator(mZoomInInterpolator); 1687 anim.play(a); 1688 1689 if (mOldAlphas[i] != mNewAlphas[i]) { 1690 LauncherViewPropertyAnimator alphaAnim = 1691 new LauncherViewPropertyAnimator(cl.getShortcutsAndWidgets()); 1692 alphaAnim.alpha(mNewAlphas[i]) 1693 .setDuration(duration) 1694 .setInterpolator(mZoomInInterpolator); 1695 anim.play(alphaAnim); 1696 } 1697 if (mOldRotationYs[i] != 0 || mNewRotationYs[i] != 0) { 1698 ValueAnimator rotate = ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1699 rotate.setInterpolator(new DecelerateInterpolator(2.0f)); 1700 rotate.addUpdateListener(new LauncherAnimatorUpdateListener() { 1701 public void onAnimationUpdate(float a, float b) { 1702 cl.setRotationY(a * mOldRotationYs[i] + b * mNewRotationYs[i]); 1703 } 1704 }); 1705 anim.play(rotate); 1706 } 1707 if (mOldBackgroundAlphas[i] != 0 || 1708 mNewBackgroundAlphas[i] != 0 || 1709 mOldBackgroundAlphaMultipliers[i] != 0 || 1710 mNewBackgroundAlphaMultipliers[i] != 0) { 1711 ValueAnimator bgAnim = ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1712 bgAnim.setInterpolator(mZoomInInterpolator); 1713 bgAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1714 public void onAnimationUpdate(float a, float b) { 1715 cl.setBackgroundAlpha( 1716 a * mOldBackgroundAlphas[i] + 1717 b * mNewBackgroundAlphas[i]); 1718 cl.setBackgroundAlphaMultiplier( 1719 a * mOldBackgroundAlphaMultipliers[i] + 1720 b * mNewBackgroundAlphaMultipliers[i]); 1721 } 1722 }); 1723 anim.play(bgAnim); 1724 } 1725 } 1726 } 1727 anim.setStartDelay(delay); 1728 } 1729 1730 if (stateIsSpringLoaded) { 1731 // Right now we're covered by Apps Customize 1732 // Show the background gradient immediately, so the gradient will 1733 // be showing once AppsCustomize disappears 1734 animateBackgroundGradient(getResources().getInteger( 1735 R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, false); 1736 } else { 1737 // Fade the background gradient away 1738 animateBackgroundGradient(0f, true); 1739 } 1740 return anim; 1741 } 1742 1743 @Override 1744 public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) { 1745 mIsSwitchingState = true; 1746 cancelScrollingIndicatorAnimations(); 1747 } 1748 1749 @Override 1750 public void onLauncherTransitionStep(Launcher l, float t) { 1751 mTransitionProgress = t; 1752 } 1753 1754 @Override 1755 public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) { 1756 mIsSwitchingState = false; 1757 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 1758 updateChildrenLayersEnabled(); 1759 // The code in getChangeStateAnimation to determine initialAlpha and finalAlpha will ensure 1760 // ensure that only the current page is visible during (and subsequently, after) the 1761 // transition animation. If fade adjacent pages is disabled, then re-enable the page 1762 // visibility after the transition animation. 1763 if (!mFadeInAdjacentScreens) { 1764 for (int i = 0; i < getChildCount(); i++) { 1765 final CellLayout cl = (CellLayout) getChildAt(i); 1766 cl.setShortcutAndWidgetAlpha(1f); 1767 } 1768 } 1769 } 1770 1771 @Override 1772 public View getContent() { 1773 return this; 1774 } 1775 1776 /** 1777 * Draw the View v into the given Canvas. 1778 * 1779 * @param v the view to draw 1780 * @param destCanvas the canvas to draw on 1781 * @param padding the horizontal and vertical padding to use when drawing 1782 */ 1783 private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { 1784 final Rect clipRect = mTempRect; 1785 v.getDrawingRect(clipRect); 1786 1787 boolean textVisible = false; 1788 1789 destCanvas.save(); 1790 if (v instanceof TextView && pruneToDrawable) { 1791 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1792 clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); 1793 destCanvas.translate(padding / 2, padding / 2); 1794 d.draw(destCanvas); 1795 } else { 1796 if (v instanceof FolderIcon) { 1797 // For FolderIcons the text can bleed into the icon area, and so we need to 1798 // hide the text completely (which can't be achieved by clipping). 1799 if (((FolderIcon) v).getTextVisible()) { 1800 ((FolderIcon) v).setTextVisible(false); 1801 textVisible = true; 1802 } 1803 } else if (v instanceof BubbleTextView) { 1804 final BubbleTextView tv = (BubbleTextView) v; 1805 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1806 tv.getLayout().getLineTop(0); 1807 } else if (v instanceof TextView) { 1808 final TextView tv = (TextView) v; 1809 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1810 tv.getLayout().getLineTop(0); 1811 } 1812 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1813 destCanvas.clipRect(clipRect, Op.REPLACE); 1814 v.draw(destCanvas); 1815 1816 // Restore text visibility of FolderIcon if necessary 1817 if (textVisible) { 1818 ((FolderIcon) v).setTextVisible(true); 1819 } 1820 } 1821 destCanvas.restore(); 1822 } 1823 1824 /** 1825 * Returns a new bitmap to show when the given View is being dragged around. 1826 * Responsibility for the bitmap is transferred to the caller. 1827 */ 1828 public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1829 Bitmap b; 1830 1831 if (v instanceof TextView) { 1832 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1833 b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, 1834 d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); 1835 } else { 1836 b = Bitmap.createBitmap( 1837 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1838 } 1839 1840 canvas.setBitmap(b); 1841 drawDragView(v, canvas, padding, true); 1842 canvas.setBitmap(null); 1843 1844 return b; 1845 } 1846 1847 /** 1848 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1849 * Responsibility for the bitmap is transferred to the caller. 1850 */ 1851 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1852 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1853 final Bitmap b = Bitmap.createBitmap( 1854 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1855 1856 canvas.setBitmap(b); 1857 drawDragView(v, canvas, padding, true); 1858 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1859 canvas.setBitmap(null); 1860 return b; 1861 } 1862 1863 /** 1864 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1865 * Responsibility for the bitmap is transferred to the caller. 1866 */ 1867 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h, 1868 Paint alphaClipPaint) { 1869 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1870 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1871 canvas.setBitmap(b); 1872 1873 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 1874 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 1875 (h - padding) / (float) orig.getHeight()); 1876 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 1877 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 1878 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 1879 1880 // center the image 1881 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 1882 1883 canvas.drawBitmap(orig, src, dst, null); 1884 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor, 1885 alphaClipPaint); 1886 canvas.setBitmap(null); 1887 1888 return b; 1889 } 1890 1891 void startDrag(CellLayout.CellInfo cellInfo) { 1892 View child = cellInfo.cell; 1893 1894 // Make sure the drag was started by a long press as opposed to a long click. 1895 if (!child.isInTouchMode()) { 1896 return; 1897 } 1898 1899 mDragInfo = cellInfo; 1900 child.setVisibility(INVISIBLE); 1901 CellLayout layout = (CellLayout) child.getParent().getParent(); 1902 layout.prepareChildForDrag(child); 1903 1904 child.clearFocus(); 1905 child.setPressed(false); 1906 1907 final Canvas canvas = new Canvas(); 1908 1909 // The outline is used to visualize where the item will land if dropped 1910 mDragOutline = createDragOutline(child, canvas, DRAG_BITMAP_PADDING); 1911 beginDragShared(child, this); 1912 } 1913 1914 public void beginDragShared(View child, DragSource source) { 1915 Resources r = getResources(); 1916 1917 // The drag bitmap follows the touch point around on the screen 1918 final Bitmap b = createDragBitmap(child, new Canvas(), DRAG_BITMAP_PADDING); 1919 1920 final int bmpWidth = b.getWidth(); 1921 final int bmpHeight = b.getHeight(); 1922 1923 mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 1924 int dragLayerX = 1925 Math.round(mTempXY[0] - (bmpWidth - child.getScaleX() * child.getWidth()) / 2); 1926 int dragLayerY = 1927 Math.round(mTempXY[1] - (bmpHeight - child.getScaleY() * bmpHeight) / 2 1928 - DRAG_BITMAP_PADDING / 2); 1929 1930 Point dragVisualizeOffset = null; 1931 Rect dragRect = null; 1932 if (child instanceof BubbleTextView || child instanceof PagedViewIcon) { 1933 int iconSize = r.getDimensionPixelSize(R.dimen.app_icon_size); 1934 int iconPaddingTop = r.getDimensionPixelSize(R.dimen.app_icon_padding_top); 1935 int top = child.getPaddingTop(); 1936 int left = (bmpWidth - iconSize) / 2; 1937 int right = left + iconSize; 1938 int bottom = top + iconSize; 1939 dragLayerY += top; 1940 // Note: The drag region is used to calculate drag layer offsets, but the 1941 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 1942 dragVisualizeOffset = new Point(-DRAG_BITMAP_PADDING / 2, 1943 iconPaddingTop - DRAG_BITMAP_PADDING / 2); 1944 dragRect = new Rect(left, top, right, bottom); 1945 } else if (child instanceof FolderIcon) { 1946 int previewSize = r.getDimensionPixelSize(R.dimen.folder_preview_size); 1947 dragRect = new Rect(0, 0, child.getWidth(), previewSize); 1948 } 1949 1950 // Clear the pressed state if necessary 1951 if (child instanceof BubbleTextView) { 1952 BubbleTextView icon = (BubbleTextView) child; 1953 icon.clearPressedOrFocusedBackground(); 1954 } 1955 1956 mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 1957 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect, child.getScaleX()); 1958 b.recycle(); 1959 1960 // Show the scrolling indicator when you pick up an item 1961 showScrollingIndicator(false); 1962 } 1963 1964 void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, int screen, 1965 int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { 1966 View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); 1967 1968 final int[] cellXY = new int[2]; 1969 target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1970 addInScreen(view, container, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1971 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, cellXY[0], 1972 cellXY[1]); 1973 } 1974 1975 public boolean transitionStateShouldAllowDrop() { 1976 return ((!isSwitchingState() || mTransitionProgress > 0.5f) && mState != State.SMALL); 1977 } 1978 1979 /** 1980 * {@inheritDoc} 1981 */ 1982 public boolean acceptDrop(DragObject d) { 1983 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1984 CellLayout dropTargetLayout = mDropToLayout; 1985 if (d.dragSource != this) { 1986 // Don't accept the drop if we're not over a screen at time of drop 1987 if (dropTargetLayout == null) { 1988 return false; 1989 } 1990 if (!transitionStateShouldAllowDrop()) return false; 1991 1992 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 1993 d.dragView, mDragViewVisualCenter); 1994 1995 // We want the point to be mapped to the dragTarget. 1996 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 1997 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 1998 } else { 1999 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 2000 } 2001 2002 int spanX = 1; 2003 int spanY = 1; 2004 if (mDragInfo != null) { 2005 final CellLayout.CellInfo dragCellInfo = mDragInfo; 2006 spanX = dragCellInfo.spanX; 2007 spanY = dragCellInfo.spanY; 2008 } else { 2009 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 2010 spanX = dragInfo.spanX; 2011 spanY = dragInfo.spanY; 2012 } 2013 2014 int minSpanX = spanX; 2015 int minSpanY = spanY; 2016 if (d.dragInfo instanceof PendingAddWidgetInfo) { 2017 minSpanX = ((PendingAddWidgetInfo) d.dragInfo).minSpanX; 2018 minSpanY = ((PendingAddWidgetInfo) d.dragInfo).minSpanY; 2019 } 2020 2021 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2022 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, dropTargetLayout, 2023 mTargetCell); 2024 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2025 mDragViewVisualCenter[1], mTargetCell); 2026 if (willCreateUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, 2027 mTargetCell, distance, true)) { 2028 return true; 2029 } 2030 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, 2031 mTargetCell, distance)) { 2032 return true; 2033 } 2034 2035 int[] resultSpan = new int[2]; 2036 mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], 2037 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2038 null, mTargetCell, resultSpan, CellLayout.MODE_ACCEPT_DROP); 2039 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2040 2041 // Don't accept the drop if there's no room for the item 2042 if (!foundCell) { 2043 // Don't show the message if we are dropping on the AllApps button and the hotseat 2044 // is full 2045 boolean isHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2046 if (mTargetCell != null && isHotseat) { 2047 Hotseat hotseat = mLauncher.getHotseat(); 2048 if (hotseat.isAllAppsButtonRank( 2049 hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { 2050 return false; 2051 } 2052 } 2053 2054 mLauncher.showOutOfSpaceMessage(isHotseat); 2055 return false; 2056 } 2057 } 2058 return true; 2059 } 2060 2061 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, float 2062 distance, boolean considerTimeout) { 2063 if (distance > mMaxDistanceForFolderCreation) return false; 2064 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2065 2066 if (dropOverView != null) { 2067 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2068 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2069 return false; 2070 } 2071 } 2072 2073 boolean hasntMoved = false; 2074 if (mDragInfo != null) { 2075 hasntMoved = dropOverView == mDragInfo.cell; 2076 } 2077 2078 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2079 return false; 2080 } 2081 2082 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2083 boolean willBecomeShortcut = 2084 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2085 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2086 2087 return (aboveShortcut && willBecomeShortcut); 2088 } 2089 2090 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell, 2091 float distance) { 2092 if (distance > mMaxDistanceForFolderCreation) return false; 2093 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2094 2095 if (dropOverView != null) { 2096 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2097 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2098 return false; 2099 } 2100 } 2101 2102 if (dropOverView instanceof FolderIcon) { 2103 FolderIcon fi = (FolderIcon) dropOverView; 2104 if (fi.acceptDrop(dragInfo)) { 2105 return true; 2106 } 2107 } 2108 return false; 2109 } 2110 2111 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2112 int[] targetCell, float distance, boolean external, DragView dragView, 2113 Runnable postAnimationRunnable) { 2114 if (distance > mMaxDistanceForFolderCreation) return false; 2115 View v = target.getChildAt(targetCell[0], targetCell[1]); 2116 2117 boolean hasntMoved = false; 2118 if (mDragInfo != null) { 2119 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2120 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2121 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2122 } 2123 2124 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2125 mCreateUserFolderOnDrop = false; 2126 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 2127 2128 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2129 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2130 2131 if (aboveShortcut && willBecomeShortcut) { 2132 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2133 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2134 // if the drag started here, we need to remove it from the workspace 2135 if (!external) { 2136 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2137 } 2138 2139 Rect folderLocation = new Rect(); 2140 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2141 target.removeView(v); 2142 2143 FolderIcon fi = 2144 mLauncher.addFolder(target, container, screen, targetCell[0], targetCell[1]); 2145 destInfo.cellX = -1; 2146 destInfo.cellY = -1; 2147 sourceInfo.cellX = -1; 2148 sourceInfo.cellY = -1; 2149 2150 // If the dragView is null, we can't animate 2151 boolean animate = dragView != null; 2152 if (animate) { 2153 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2154 postAnimationRunnable); 2155 } else { 2156 fi.addItem(destInfo); 2157 fi.addItem(sourceInfo); 2158 } 2159 return true; 2160 } 2161 return false; 2162 } 2163 2164 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2165 float distance, DragObject d, boolean external) { 2166 if (distance > mMaxDistanceForFolderCreation) return false; 2167 2168 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2169 if (!mAddToExistingFolderOnDrop) return false; 2170 mAddToExistingFolderOnDrop = false; 2171 2172 if (dropOverView instanceof FolderIcon) { 2173 FolderIcon fi = (FolderIcon) dropOverView; 2174 if (fi.acceptDrop(d.dragInfo)) { 2175 fi.onDrop(d); 2176 2177 // if the drag started here, we need to remove it from the workspace 2178 if (!external) { 2179 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2180 } 2181 return true; 2182 } 2183 } 2184 return false; 2185 } 2186 2187 public void onDrop(final DragObject d) { 2188 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2189 mDragViewVisualCenter); 2190 2191 CellLayout dropTargetLayout = mDropToLayout; 2192 2193 // We want the point to be mapped to the dragTarget. 2194 if (dropTargetLayout != null) { 2195 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 2196 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2197 } else { 2198 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 2199 } 2200 } 2201 2202 int snapScreen = -1; 2203 boolean resizeOnDrop = false; 2204 if (d.dragSource != this) { 2205 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2206 (int) mDragViewVisualCenter[1] }; 2207 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2208 } else if (mDragInfo != null) { 2209 final View cell = mDragInfo.cell; 2210 2211 Runnable resizeRunnable = null; 2212 if (dropTargetLayout != null) { 2213 // Move internally 2214 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2215 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2216 long container = hasMovedIntoHotseat ? 2217 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2218 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2219 int screen = (mTargetCell[0] < 0) ? 2220 mDragInfo.screen : indexOfChild(dropTargetLayout); 2221 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2222 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2223 // First we find the cell nearest to point at which the item is 2224 // dropped, without any consideration to whether there is an item there. 2225 2226 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2227 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2228 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2229 mDragViewVisualCenter[1], mTargetCell); 2230 2231 // If the item being dropped is a shortcut and the nearest drop 2232 // cell also contains a shortcut, then create a folder with the two shortcuts. 2233 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2234 dropTargetLayout, mTargetCell, distance, false, d.dragView, null)) { 2235 return; 2236 } 2237 2238 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, 2239 distance, d, false)) { 2240 return; 2241 } 2242 2243 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2244 // we need to find the nearest cell location that is vacant 2245 ItemInfo item = (ItemInfo) d.dragInfo; 2246 int minSpanX = item.spanX; 2247 int minSpanY = item.spanY; 2248 if (item.minSpanX > 0 && item.minSpanY > 0) { 2249 minSpanX = item.minSpanX; 2250 minSpanY = item.minSpanY; 2251 } 2252 2253 int[] resultSpan = new int[2]; 2254 mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], 2255 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, cell, 2256 mTargetCell, resultSpan, CellLayout.MODE_ON_DROP); 2257 2258 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2259 if (foundCell && (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY)) { 2260 resizeOnDrop = true; 2261 item.spanX = resultSpan[0]; 2262 item.spanY = resultSpan[1]; 2263 } 2264 2265 if (mCurrentPage != screen && !hasMovedIntoHotseat) { 2266 snapScreen = screen; 2267 snapToPage(screen); 2268 } 2269 2270 if (foundCell) { 2271 final ItemInfo info = (ItemInfo) cell.getTag(); 2272 if (hasMovedLayouts) { 2273 // Reparent the view 2274 getParentCellLayoutForView(cell).removeView(cell); 2275 addInScreen(cell, container, screen, mTargetCell[0], mTargetCell[1], 2276 info.spanX, info.spanY); 2277 } 2278 2279 // update the item's position after drop 2280 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2281 lp.cellX = lp.tmpCellX = mTargetCell[0]; 2282 lp.cellY = lp.tmpCellY = mTargetCell[1]; 2283 lp.cellHSpan = item.spanX; 2284 lp.cellVSpan = item.spanY; 2285 lp.isLockedToGrid = true; 2286 cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screen, 2287 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2288 2289 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2290 cell instanceof LauncherAppWidgetHostView) { 2291 final CellLayout cellLayout = dropTargetLayout; 2292 // We post this call so that the widget has a chance to be placed 2293 // in its final location 2294 2295 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2296 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2297 if (pinfo != null && 2298 pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2299 final Runnable addResizeFrame = new Runnable() { 2300 public void run() { 2301 DragLayer dragLayer = mLauncher.getDragLayer(); 2302 dragLayer.addResizeFrame(info, hostView, cellLayout); 2303 } 2304 }; 2305 resizeRunnable = (new Runnable() { 2306 public void run() { 2307 if (!isPageMoving()) { 2308 addResizeFrame.run(); 2309 } else { 2310 mDelayedResizeRunnable = addResizeFrame; 2311 } 2312 } 2313 }); 2314 } 2315 } 2316 2317 LauncherModel.moveItemInDatabase(mLauncher, info, container, screen, lp.cellX, 2318 lp.cellY); 2319 } else { 2320 // If we can't find a drop location, we return the item to its original position 2321 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2322 mTargetCell[0] = lp.cellX; 2323 mTargetCell[1] = lp.cellY; 2324 } 2325 } 2326 2327 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2328 final Runnable finalResizeRunnable = resizeRunnable; 2329 // Prepare it to be animated into its new position 2330 // This must be called after the view has been re-parented 2331 final Runnable onCompleteRunnable = new Runnable() { 2332 @Override 2333 public void run() { 2334 mAnimatingViewIntoPlace = false; 2335 updateChildrenLayersEnabled(); 2336 if (finalResizeRunnable != null) { 2337 finalResizeRunnable.run(); 2338 } 2339 } 2340 }; 2341 mAnimatingViewIntoPlace = true; 2342 if (d.dragView.hasDrawn()) { 2343 final ItemInfo info = (ItemInfo) cell.getTag(); 2344 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET) { 2345 int animationType = resizeOnDrop ? ANIMATE_INTO_POSITION_AND_RESIZE : 2346 ANIMATE_INTO_POSITION_AND_DISAPPEAR; 2347 animateWidgetDrop(info, parent, d.dragView, 2348 onCompleteRunnable, animationType, cell, false); 2349 } else { 2350 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2351 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2352 onCompleteRunnable, this); 2353 } 2354 } else { 2355 d.deferDragViewCleanupPostAnimation = false; 2356 cell.setVisibility(VISIBLE); 2357 } 2358 parent.onDropChild(cell); 2359 } 2360 } 2361 2362 public void setFinalScrollForPageChange(int screen) { 2363 if (screen >= 0) { 2364 mSavedScrollX = getScrollX(); 2365 CellLayout cl = (CellLayout) getChildAt(screen); 2366 mSavedTranslationX = cl.getTranslationX(); 2367 mSavedRotationY = cl.getRotationY(); 2368 final int newX = getChildOffset(screen) - getRelativeChildOffset(screen); 2369 setScrollX(newX); 2370 cl.setTranslationX(0f); 2371 cl.setRotationY(0f); 2372 } 2373 } 2374 2375 public void resetFinalScrollForPageChange(int screen) { 2376 if (screen >= 0) { 2377 CellLayout cl = (CellLayout) getChildAt(screen); 2378 setScrollX(mSavedScrollX); 2379 cl.setTranslationX(mSavedTranslationX); 2380 cl.setRotationY(mSavedRotationY); 2381 } 2382 } 2383 2384 public void getViewLocationRelativeToSelf(View v, int[] location) { 2385 getLocationInWindow(location); 2386 int x = location[0]; 2387 int y = location[1]; 2388 2389 v.getLocationInWindow(location); 2390 int vX = location[0]; 2391 int vY = location[1]; 2392 2393 location[0] = vX - x; 2394 location[1] = vY - y; 2395 } 2396 2397 public void onDragEnter(DragObject d) { 2398 mDragEnforcer.onDragEnter(); 2399 mCreateUserFolderOnDrop = false; 2400 mAddToExistingFolderOnDrop = false; 2401 2402 mDropToLayout = null; 2403 CellLayout layout = getCurrentDropLayout(); 2404 setCurrentDropLayout(layout); 2405 setCurrentDragOverlappingLayout(layout); 2406 2407 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2408 // don't need to show the outlines 2409 if (LauncherApplication.isScreenLarge()) { 2410 showOutlines(); 2411 } 2412 } 2413 2414 public void onDragExit(DragObject d) { 2415 mDragEnforcer.onDragExit(); 2416 2417 // Here we store the final page that will be dropped to, if the workspace in fact 2418 // receives the drop 2419 if (mInScrollArea) { 2420 mDropToLayout = mDragOverlappingLayout; 2421 } else { 2422 mDropToLayout = mDragTargetLayout; 2423 } 2424 2425 if (mDragMode == DRAG_MODE_CREATE_FOLDER) { 2426 mCreateUserFolderOnDrop = true; 2427 } else if (mDragMode == DRAG_MODE_ADD_TO_FOLDER) { 2428 mAddToExistingFolderOnDrop = true; 2429 } 2430 2431 // Reset the scroll area and previous drag target 2432 onResetScrollArea(); 2433 setCurrentDropLayout(null); 2434 setCurrentDragOverlappingLayout(null); 2435 2436 mSpringLoadedDragController.cancel(); 2437 2438 if (!mIsPageMoving) { 2439 hideOutlines(); 2440 } 2441 } 2442 2443 void setCurrentDropLayout(CellLayout layout) { 2444 if (mDragTargetLayout != null) { 2445 mDragTargetLayout.revertTempState(); 2446 mDragTargetLayout.onDragExit(); 2447 } 2448 mDragTargetLayout = layout; 2449 if (mDragTargetLayout != null) { 2450 mDragTargetLayout.onDragEnter(); 2451 } 2452 cleanupReorder(true); 2453 cleanupFolderCreation(); 2454 setCurrentDropOverCell(-1, -1); 2455 } 2456 2457 void setCurrentDragOverlappingLayout(CellLayout layout) { 2458 if (mDragOverlappingLayout != null) { 2459 mDragOverlappingLayout.setIsDragOverlapping(false); 2460 } 2461 mDragOverlappingLayout = layout; 2462 if (mDragOverlappingLayout != null) { 2463 mDragOverlappingLayout.setIsDragOverlapping(true); 2464 } 2465 invalidate(); 2466 } 2467 2468 void setCurrentDropOverCell(int x, int y) { 2469 if (x != mDragOverX || y != mDragOverY) { 2470 mDragOverX = x; 2471 mDragOverY = y; 2472 setDragMode(DRAG_MODE_NONE); 2473 } 2474 } 2475 2476 void setDragMode(int dragMode) { 2477 if (dragMode != mDragMode) { 2478 if (dragMode == DRAG_MODE_NONE) { 2479 cleanupAddToFolder(); 2480 // We don't want to cancel the re-order alarm every time the target cell changes 2481 // as this feels to slow / unresponsive. 2482 cleanupReorder(false); 2483 cleanupFolderCreation(); 2484 } else if (dragMode == DRAG_MODE_ADD_TO_FOLDER) { 2485 cleanupReorder(true); 2486 cleanupFolderCreation(); 2487 } else if (dragMode == DRAG_MODE_CREATE_FOLDER) { 2488 cleanupAddToFolder(); 2489 cleanupReorder(true); 2490 } else if (dragMode == DRAG_MODE_REORDER) { 2491 cleanupAddToFolder(); 2492 cleanupFolderCreation(); 2493 } 2494 mDragMode = dragMode; 2495 } 2496 } 2497 2498 private void cleanupFolderCreation() { 2499 if (mDragFolderRingAnimator != null) { 2500 mDragFolderRingAnimator.animateToNaturalState(); 2501 } 2502 mFolderCreationAlarm.cancelAlarm(); 2503 } 2504 2505 private void cleanupAddToFolder() { 2506 if (mDragOverFolderIcon != null) { 2507 mDragOverFolderIcon.onDragExit(null); 2508 mDragOverFolderIcon = null; 2509 } 2510 } 2511 2512 private void cleanupReorder(boolean cancelAlarm) { 2513 // Any pending reorders are canceled 2514 if (cancelAlarm) { 2515 mReorderAlarm.cancelAlarm(); 2516 } 2517 mLastReorderX = -1; 2518 mLastReorderY = -1; 2519 } 2520 2521 public DropTarget getDropTargetDelegate(DragObject d) { 2522 return null; 2523 } 2524 2525 /* 2526 * 2527 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2528 * coordinate space. The argument xy is modified with the return result. 2529 * 2530 */ 2531 void mapPointFromSelfToChild(View v, float[] xy) { 2532 mapPointFromSelfToChild(v, xy, null); 2533 } 2534 2535 /* 2536 * 2537 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2538 * coordinate space. The argument xy is modified with the return result. 2539 * 2540 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2541 * computing it itself; we use this to avoid redundant matrix inversions in 2542 * findMatchingPageForDragOver 2543 * 2544 */ 2545 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2546 if (cachedInverseMatrix == null) { 2547 v.getMatrix().invert(mTempInverseMatrix); 2548 cachedInverseMatrix = mTempInverseMatrix; 2549 } 2550 int scrollX = mScrollX; 2551 if (mNextPage != INVALID_PAGE) { 2552 scrollX = mScroller.getFinalX(); 2553 } 2554 xy[0] = xy[0] + scrollX - v.getLeft(); 2555 xy[1] = xy[1] + mScrollY - v.getTop(); 2556 cachedInverseMatrix.mapPoints(xy); 2557 } 2558 2559 /* 2560 * Maps a point from the Workspace's coordinate system to another sibling view's. (Workspace 2561 * covers the full screen) 2562 */ 2563 void mapPointFromSelfToSibling(View v, float[] xy) { 2564 xy[0] = xy[0] - v.getLeft(); 2565 xy[1] = xy[1] - v.getTop(); 2566 } 2567 2568 void mapPointFromSelfToHotseatLayout(Hotseat hotseat, float[] xy) { 2569 xy[0] = xy[0] - hotseat.getLeft() - hotseat.getLayout().getLeft(); 2570 xy[1] = xy[1] - hotseat.getTop() - hotseat.getLayout().getTop(); 2571 } 2572 2573 /* 2574 * 2575 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2576 * the parent View's coordinate space. The argument xy is modified with the return result. 2577 * 2578 */ 2579 void mapPointFromChildToSelf(View v, float[] xy) { 2580 v.getMatrix().mapPoints(xy); 2581 int scrollX = mScrollX; 2582 if (mNextPage != INVALID_PAGE) { 2583 scrollX = mScroller.getFinalX(); 2584 } 2585 xy[0] -= (scrollX - v.getLeft()); 2586 xy[1] -= (mScrollY - v.getTop()); 2587 } 2588 2589 static private float squaredDistance(float[] point1, float[] point2) { 2590 float distanceX = point1[0] - point2[0]; 2591 float distanceY = point2[1] - point2[1]; 2592 return distanceX * distanceX + distanceY * distanceY; 2593 } 2594 2595 /* 2596 * 2597 * Returns true if the passed CellLayout cl overlaps with dragView 2598 * 2599 */ 2600 boolean overlaps(CellLayout cl, DragView dragView, 2601 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2602 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2603 final float[] draggedItemTopLeft = mTempDragCoordinates; 2604 draggedItemTopLeft[0] = dragViewX; 2605 draggedItemTopLeft[1] = dragViewY; 2606 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2607 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2608 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2609 2610 // Transform the dragged item's top left coordinates 2611 // to the CellLayout's local coordinates 2612 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2613 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2614 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2615 2616 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2617 // Transform the dragged item's bottom right coordinates 2618 // to the CellLayout's local coordinates 2619 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2620 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2621 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2622 2623 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2624 float overlap = (overlapRegionRight - overlapRegionLeft) * 2625 (overlapRegionBottom - overlapRegionTop); 2626 if (overlap > 0) { 2627 return true; 2628 } 2629 } 2630 } 2631 return false; 2632 } 2633 2634 /* 2635 * 2636 * This method returns the CellLayout that is currently being dragged to. In order to drag 2637 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2638 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2639 * 2640 * Return null if no CellLayout is currently being dragged over 2641 * 2642 */ 2643 private CellLayout findMatchingPageForDragOver( 2644 DragView dragView, float originX, float originY, boolean exact) { 2645 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2646 // with the item being dragged and then choose the one that's closest to the touch point 2647 final int screenCount = getChildCount(); 2648 CellLayout bestMatchingScreen = null; 2649 float smallestDistSoFar = Float.MAX_VALUE; 2650 2651 for (int i = 0; i < screenCount; i++) { 2652 CellLayout cl = (CellLayout) getChildAt(i); 2653 2654 final float[] touchXy = {originX, originY}; 2655 // Transform the touch coordinates to the CellLayout's local coordinates 2656 // If the touch point is within the bounds of the cell layout, we can return immediately 2657 cl.getMatrix().invert(mTempInverseMatrix); 2658 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2659 2660 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2661 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2662 return cl; 2663 } 2664 2665 if (!exact) { 2666 // Get the center of the cell layout in screen coordinates 2667 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2668 cellLayoutCenter[0] = cl.getWidth()/2; 2669 cellLayoutCenter[1] = cl.getHeight()/2; 2670 mapPointFromChildToSelf(cl, cellLayoutCenter); 2671 2672 touchXy[0] = originX; 2673 touchXy[1] = originY; 2674 2675 // Calculate the distance between the center of the CellLayout 2676 // and the touch point 2677 float dist = squaredDistance(touchXy, cellLayoutCenter); 2678 2679 if (dist < smallestDistSoFar) { 2680 smallestDistSoFar = dist; 2681 bestMatchingScreen = cl; 2682 } 2683 } 2684 } 2685 return bestMatchingScreen; 2686 } 2687 2688 // This is used to compute the visual center of the dragView. This point is then 2689 // used to visualize drop locations and determine where to drop an item. The idea is that 2690 // the visual center represents the user's interpretation of where the item is, and hence 2691 // is the appropriate point to use when determining drop location. 2692 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2693 DragView dragView, float[] recycle) { 2694 float res[]; 2695 if (recycle == null) { 2696 res = new float[2]; 2697 } else { 2698 res = recycle; 2699 } 2700 2701 // First off, the drag view has been shifted in a way that is not represented in the 2702 // x and y values or the x/yOffsets. Here we account for that shift. 2703 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2704 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2705 2706 // These represent the visual top and left of drag view if a dragRect was provided. 2707 // If a dragRect was not provided, then they correspond to the actual view left and 2708 // top, as the dragRect is in that case taken to be the entire dragView. 2709 // R.dimen.dragViewOffsetY. 2710 int left = x - xOffset; 2711 int top = y - yOffset; 2712 2713 // In order to find the visual center, we shift by half the dragRect 2714 res[0] = left + dragView.getDragRegion().width() / 2; 2715 res[1] = top + dragView.getDragRegion().height() / 2; 2716 2717 return res; 2718 } 2719 2720 private boolean isDragWidget(DragObject d) { 2721 return (d.dragInfo instanceof LauncherAppWidgetInfo || 2722 d.dragInfo instanceof PendingAddWidgetInfo); 2723 } 2724 private boolean isExternalDragWidget(DragObject d) { 2725 return d.dragSource != this && isDragWidget(d); 2726 } 2727 2728 public void onDragOver(DragObject d) { 2729 // Skip drag over events while we are dragging over side pages 2730 if (mInScrollArea || mIsSwitchingState || mState == State.SMALL) return; 2731 2732 Rect r = new Rect(); 2733 CellLayout layout = null; 2734 ItemInfo item = (ItemInfo) d.dragInfo; 2735 2736 // Ensure that we have proper spans for the item that we are dropping 2737 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2738 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2739 d.dragView, mDragViewVisualCenter); 2740 2741 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2742 // Identify whether we have dragged over a side page 2743 if (isSmall()) { 2744 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 2745 mLauncher.getHotseat().getHitRect(r); 2746 if (r.contains(d.x, d.y)) { 2747 layout = mLauncher.getHotseat().getLayout(); 2748 } 2749 } 2750 if (layout == null) { 2751 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false); 2752 } 2753 if (layout != mDragTargetLayout) { 2754 2755 setCurrentDropLayout(layout); 2756 setCurrentDragOverlappingLayout(layout); 2757 2758 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 2759 if (isInSpringLoadedMode) { 2760 if (mLauncher.isHotseatLayout(layout)) { 2761 mSpringLoadedDragController.cancel(); 2762 } else { 2763 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2764 } 2765 } 2766 } 2767 } else { 2768 // Test to see if we are over the hotseat otherwise just use the current page 2769 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 2770 mLauncher.getHotseat().getHitRect(r); 2771 if (r.contains(d.x, d.y)) { 2772 layout = mLauncher.getHotseat().getLayout(); 2773 } 2774 } 2775 if (layout == null) { 2776 layout = getCurrentDropLayout(); 2777 } 2778 if (layout != mDragTargetLayout) { 2779 setCurrentDropLayout(layout); 2780 setCurrentDragOverlappingLayout(layout); 2781 } 2782 } 2783 2784 // Handle the drag over 2785 if (mDragTargetLayout != null) { 2786 // We want the point to be mapped to the dragTarget. 2787 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2788 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2789 } else { 2790 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2791 } 2792 2793 ItemInfo info = (ItemInfo) d.dragInfo; 2794 2795 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2796 (int) mDragViewVisualCenter[1], 1, 1, mDragTargetLayout, mTargetCell); 2797 2798 setCurrentDropOverCell(mTargetCell[0], mTargetCell[1]); 2799 2800 float targetCellDistance = mDragTargetLayout.getDistanceFromCell( 2801 mDragViewVisualCenter[0], mDragViewVisualCenter[1], mTargetCell); 2802 2803 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2804 mTargetCell[1]); 2805 2806 manageFolderFeedback(info, mDragTargetLayout, mTargetCell, 2807 targetCellDistance, dragOverView); 2808 2809 int minSpanX = item.spanX; 2810 int minSpanY = item.spanY; 2811 if (item.minSpanX > 0 && item.minSpanY > 0) { 2812 minSpanX = item.minSpanX; 2813 minSpanY = item.minSpanY; 2814 } 2815 2816 int[] reorderPosition = new int[2]; 2817 reorderPosition = findNearestArea((int) mDragViewVisualCenter[0], 2818 (int) mDragViewVisualCenter[1], item.spanX, item.spanY, mDragTargetLayout, 2819 reorderPosition); 2820 2821 boolean nearestDropOccupied = mDragTargetLayout.isNearestDropLocationOccupied((int) 2822 mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], item.spanX, 2823 item.spanY, child, mTargetCell); 2824 2825 if (!nearestDropOccupied) { 2826 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2827 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2828 mTargetCell[0], mTargetCell[1], item.spanX, item.spanY, false, 2829 d.dragView.getDragVisualizeOffset(), d.dragView.getDragRegion()); 2830 } else if ((mDragMode == DRAG_MODE_NONE || mDragMode == DRAG_MODE_REORDER) 2831 && !mReorderAlarm.alarmPending() && (mLastReorderX != reorderPosition[0] || 2832 mLastReorderY != reorderPosition[1])) { 2833 // Otherwise, if we aren't adding to or creating a folder and there's no pending 2834 // reorder, then we schedule a reorder 2835 ReorderAlarmListener listener = new ReorderAlarmListener(mDragViewVisualCenter, 2836 minSpanX, minSpanY, item.spanX, item.spanY, d.dragView, child); 2837 mReorderAlarm.setOnAlarmListener(listener); 2838 mReorderAlarm.setAlarm(REORDER_TIMEOUT); 2839 } 2840 2841 if (mDragMode == DRAG_MODE_CREATE_FOLDER || mDragMode == DRAG_MODE_ADD_TO_FOLDER || 2842 !nearestDropOccupied) { 2843 if (mDragTargetLayout != null) { 2844 mDragTargetLayout.revertTempState(); 2845 } 2846 } 2847 } 2848 } 2849 2850 private void manageFolderFeedback(ItemInfo info, CellLayout targetLayout, 2851 int[] targetCell, float distance, View dragOverView) { 2852 boolean userFolderPending = willCreateUserFolder(info, targetLayout, targetCell, distance, 2853 false); 2854 2855 if (mDragMode == DRAG_MODE_NONE && userFolderPending && 2856 !mFolderCreationAlarm.alarmPending()) { 2857 mFolderCreationAlarm.setOnAlarmListener(new 2858 FolderCreationAlarmListener(targetLayout, targetCell[0], targetCell[1])); 2859 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2860 return; 2861 } 2862 2863 boolean willAddToFolder = 2864 willAddToExistingUserFolder(info, targetLayout, targetCell, distance); 2865 2866 if (willAddToFolder && mDragMode == DRAG_MODE_NONE) { 2867 mDragOverFolderIcon = ((FolderIcon) dragOverView); 2868 mAddToExistingFolderOnDrop = true; 2869 mDragOverFolderIcon.onDragEnter(info); 2870 if (targetLayout != null) { 2871 targetLayout.clearDragOutlines(); 2872 } 2873 setDragMode(DRAG_MODE_ADD_TO_FOLDER); 2874 return; 2875 } 2876 2877 if (mDragMode == DRAG_MODE_ADD_TO_FOLDER && !willAddToFolder) { 2878 setDragMode(DRAG_MODE_NONE); 2879 } 2880 if (mDragMode == DRAG_MODE_CREATE_FOLDER && !userFolderPending) { 2881 setDragMode(DRAG_MODE_NONE); 2882 } 2883 2884 return; 2885 } 2886 2887 class FolderCreationAlarmListener implements OnAlarmListener { 2888 CellLayout layout; 2889 int cellX; 2890 int cellY; 2891 2892 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 2893 this.layout = layout; 2894 this.cellX = cellX; 2895 this.cellY = cellY; 2896 } 2897 2898 public void onAlarm(Alarm alarm) { 2899 if (mDragFolderRingAnimator == null) { 2900 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 2901 } 2902 mDragFolderRingAnimator.setCell(cellX, cellY); 2903 mDragFolderRingAnimator.setCellLayout(layout); 2904 mDragFolderRingAnimator.animateToAcceptState(); 2905 layout.showFolderAccept(mDragFolderRingAnimator); 2906 layout.clearDragOutlines(); 2907 setDragMode(DRAG_MODE_CREATE_FOLDER); 2908 } 2909 } 2910 2911 class ReorderAlarmListener implements OnAlarmListener { 2912 float[] dragViewCenter; 2913 int minSpanX, minSpanY, spanX, spanY; 2914 DragView dragView; 2915 View child; 2916 2917 public ReorderAlarmListener(float[] dragViewCenter, int minSpanX, int minSpanY, int spanX, 2918 int spanY, DragView dragView, View child) { 2919 this.dragViewCenter = dragViewCenter; 2920 this.minSpanX = minSpanX; 2921 this.minSpanY = minSpanY; 2922 this.spanX = spanX; 2923 this.spanY = spanY; 2924 this.child = child; 2925 this.dragView = dragView; 2926 } 2927 2928 public void onAlarm(Alarm alarm) { 2929 int[] resultSpan = new int[2]; 2930 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2931 (int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell); 2932 mLastReorderX = mTargetCell[0]; 2933 mLastReorderY = mTargetCell[1]; 2934 2935 mTargetCell = mDragTargetLayout.createArea((int) mDragViewVisualCenter[0], 2936 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2937 child, mTargetCell, resultSpan, CellLayout.MODE_DRAG_OVER); 2938 2939 if (mTargetCell[0] < 0 || mTargetCell[1] < 0) { 2940 mDragTargetLayout.revertTempState(); 2941 } else { 2942 setDragMode(DRAG_MODE_REORDER); 2943 } 2944 2945 boolean resize = resultSpan[0] != spanX || resultSpan[1] != spanY; 2946 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2947 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2948 mTargetCell[0], mTargetCell[1], resultSpan[0], resultSpan[1], resize, 2949 dragView.getDragVisualizeOffset(), dragView.getDragRegion()); 2950 } 2951 } 2952 2953 @Override 2954 public void getHitRect(Rect outRect) { 2955 // We want the workspace to have the whole area of the display (it will find the correct 2956 // cell layout to drop to in the existing drag/drop logic. 2957 outRect.set(0, 0, mDisplayWidth, mDisplayHeight); 2958 } 2959 2960 /** 2961 * Add the item specified by dragInfo to the given layout. 2962 * @return true if successful 2963 */ 2964 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2965 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2966 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2967 return true; 2968 } 2969 mLauncher.showOutOfSpaceMessage(mLauncher.isHotseatLayout(layout)); 2970 return false; 2971 } 2972 2973 private void onDropExternal(int[] touchXY, Object dragInfo, 2974 CellLayout cellLayout, boolean insertAtFirst) { 2975 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 2976 } 2977 2978 /** 2979 * Drop an item that didn't originate on one of the workspace screens. 2980 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2981 * come from another app altogether. 2982 * 2983 * NOTE: This can also be called when we are outside of a drag event, when we want 2984 * to add an item to one of the workspace screens. 2985 */ 2986 private void onDropExternal(final int[] touchXY, final Object dragInfo, 2987 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 2988 final Runnable exitSpringLoadedRunnable = new Runnable() { 2989 @Override 2990 public void run() { 2991 mLauncher.exitSpringLoadedDragModeDelayed(true, false, null); 2992 } 2993 }; 2994 2995 ItemInfo info = (ItemInfo) dragInfo; 2996 int spanX = info.spanX; 2997 int spanY = info.spanY; 2998 if (mDragInfo != null) { 2999 spanX = mDragInfo.spanX; 3000 spanY = mDragInfo.spanY; 3001 } 3002 3003 final long container = mLauncher.isHotseatLayout(cellLayout) ? 3004 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 3005 LauncherSettings.Favorites.CONTAINER_DESKTOP; 3006 final int screen = indexOfChild(cellLayout); 3007 if (!mLauncher.isHotseatLayout(cellLayout) && screen != mCurrentPage 3008 && mState != State.SPRING_LOADED) { 3009 snapToPage(screen); 3010 } 3011 3012 if (info instanceof PendingAddItemInfo) { 3013 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 3014 3015 boolean findNearestVacantCell = true; 3016 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 3017 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3018 cellLayout, mTargetCell); 3019 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3020 mDragViewVisualCenter[1], mTargetCell); 3021 if (willCreateUserFolder((ItemInfo) d.dragInfo, cellLayout, mTargetCell, 3022 distance, true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 3023 cellLayout, mTargetCell, distance)) { 3024 findNearestVacantCell = false; 3025 } 3026 } 3027 3028 final ItemInfo item = (ItemInfo) d.dragInfo; 3029 if (findNearestVacantCell) { 3030 int minSpanX = item.spanX; 3031 int minSpanY = item.spanY; 3032 if (item.minSpanX > 0 && item.minSpanY > 0) { 3033 minSpanX = item.minSpanX; 3034 minSpanY = item.minSpanY; 3035 } 3036 int[] resultSpan = new int[2]; 3037 mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], 3038 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, info.spanX, info.spanY, 3039 null, mTargetCell, resultSpan, CellLayout.MODE_ON_DROP_EXTERNAL); 3040 item.spanX = resultSpan[0]; 3041 item.spanY = resultSpan[1]; 3042 } 3043 3044 Runnable onAnimationCompleteRunnable = new Runnable() { 3045 @Override 3046 public void run() { 3047 // When dragging and dropping from customization tray, we deal with creating 3048 // widgets/shortcuts/folders in a slightly different way 3049 switch (pendingInfo.itemType) { 3050 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 3051 int span[] = new int[2]; 3052 span[0] = item.spanX; 3053 span[1] = item.spanY; 3054 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, 3055 container, screen, mTargetCell, span, null); 3056 break; 3057 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3058 mLauncher.processShortcutFromDrop(pendingInfo.componentName, 3059 container, screen, mTargetCell, null); 3060 break; 3061 default: 3062 throw new IllegalStateException("Unknown item type: " + 3063 pendingInfo.itemType); 3064 } 3065 } 3066 }; 3067 View finalView = pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET 3068 ? ((PendingAddWidgetInfo) pendingInfo).boundWidget : null; 3069 int animationStyle = ANIMATE_INTO_POSITION_AND_DISAPPEAR; 3070 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && 3071 ((PendingAddWidgetInfo) pendingInfo).info.configure != null) { 3072 animationStyle = ANIMATE_INTO_POSITION_AND_REMAIN; 3073 } 3074 animateWidgetDrop(info, cellLayout, d.dragView, onAnimationCompleteRunnable, 3075 animationStyle, finalView, true); 3076 } else { 3077 // This is for other drag/drop cases, like dragging from All Apps 3078 View view = null; 3079 3080 switch (info.itemType) { 3081 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 3082 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3083 if (info.container == NO_ID && info instanceof ApplicationInfo) { 3084 // Came from all apps -- make a copy 3085 info = new ShortcutInfo((ApplicationInfo) info); 3086 } 3087 view = mLauncher.createShortcut(R.layout.application, cellLayout, 3088 (ShortcutInfo) info); 3089 break; 3090 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 3091 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 3092 (FolderInfo) info, mIconCache); 3093 break; 3094 default: 3095 throw new IllegalStateException("Unknown item type: " + info.itemType); 3096 } 3097 3098 // First we find the cell nearest to point at which the item is 3099 // dropped, without any consideration to whether there is an item there. 3100 if (touchXY != null) { 3101 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3102 cellLayout, mTargetCell); 3103 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3104 mDragViewVisualCenter[1], mTargetCell); 3105 d.postAnimationRunnable = exitSpringLoadedRunnable; 3106 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, distance, 3107 true, d.dragView, d.postAnimationRunnable)) { 3108 return; 3109 } 3110 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, distance, d, 3111 true)) { 3112 return; 3113 } 3114 } 3115 3116 if (touchXY != null) { 3117 // when dragging and dropping, just find the closest free spot 3118 mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], 3119 (int) mDragViewVisualCenter[1], 1, 1, 1, 1, 3120 null, mTargetCell, null, CellLayout.MODE_ON_DROP_EXTERNAL); 3121 } else { 3122 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3123 } 3124 addInScreen(view, container, screen, mTargetCell[0], mTargetCell[1], info.spanX, 3125 info.spanY, insertAtFirst); 3126 cellLayout.onDropChild(view); 3127 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 3128 cellLayout.getShortcutsAndWidgets().measureChild(view); 3129 3130 3131 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, 3132 lp.cellX, lp.cellY); 3133 3134 if (d.dragView != null) { 3135 // We wrap the animation call in the temporary set and reset of the current 3136 // cellLayout to its final transform -- this means we animate the drag view to 3137 // the correct final location. 3138 setFinalTransitionTransform(cellLayout); 3139 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 3140 exitSpringLoadedRunnable); 3141 resetTransitionTransform(cellLayout); 3142 } 3143 } 3144 } 3145 3146 public Bitmap createWidgetBitmap(ItemInfo widgetInfo, View layout) { 3147 int[] unScaledSize = mLauncher.getWorkspace().estimateItemSize(widgetInfo.spanX, 3148 widgetInfo.spanY, widgetInfo, false); 3149 int visibility = layout.getVisibility(); 3150 layout.setVisibility(VISIBLE); 3151 3152 int width = MeasureSpec.makeMeasureSpec(unScaledSize[0], MeasureSpec.EXACTLY); 3153 int height = MeasureSpec.makeMeasureSpec(unScaledSize[1], MeasureSpec.EXACTLY); 3154 Bitmap b = Bitmap.createBitmap(unScaledSize[0], unScaledSize[1], 3155 Bitmap.Config.ARGB_8888); 3156 Canvas c = new Canvas(b); 3157 3158 layout.measure(width, height); 3159 layout.layout(0, 0, unScaledSize[0], unScaledSize[1]); 3160 layout.draw(c); 3161 c.setBitmap(null); 3162 layout.setVisibility(visibility); 3163 return b; 3164 } 3165 3166 private void getFinalPositionForDropAnimation(int[] loc, float[] scaleXY, 3167 DragView dragView, CellLayout layout, ItemInfo info, int[] targetCell, View finalView, 3168 boolean external) { 3169 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 3170 // location and size on the home screen. 3171 int spanX = info.spanX; 3172 int spanY = info.spanY; 3173 3174 Rect r = estimateItemPosition(layout, info, targetCell[0], targetCell[1], spanX, spanY); 3175 loc[0] = r.left; 3176 loc[1] = r.top; 3177 3178 setFinalTransitionTransform(layout); 3179 float cellLayoutScale = 3180 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(layout, loc); 3181 resetTransitionTransform(layout); 3182 float dragViewScaleX = (1.0f * r.width()) / dragView.getMeasuredWidth(); 3183 float dragViewScaleY = (1.0f * r.height()) / dragView.getMeasuredHeight(); 3184 3185 // The animation will scale the dragView about its center, so we need to center about 3186 // the final location. 3187 loc[0] -= (dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 3188 loc[1] -= (dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 3189 3190 scaleXY[0] = dragViewScaleX * cellLayoutScale; 3191 scaleXY[1] = dragViewScaleY * cellLayoutScale; 3192 } 3193 3194 public void animateWidgetDrop(ItemInfo info, CellLayout cellLayout, DragView dragView, 3195 final Runnable onCompleteRunnable, int animationType, final View finalView, 3196 boolean external) { 3197 Rect from = new Rect(); 3198 mLauncher.getDragLayer().getViewRectRelativeToSelf(dragView, from); 3199 3200 int[] finalPos = new int[2]; 3201 float scaleXY[] = new float[2]; 3202 getFinalPositionForDropAnimation(finalPos, scaleXY, dragView, cellLayout, info, mTargetCell, 3203 finalView, external); 3204 3205 Resources res = mLauncher.getResources(); 3206 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration) - 200; 3207 3208 // In the case where we've prebound the widget, we remove it from the DragLayer 3209 if (finalView instanceof AppWidgetHostView && external) { 3210 mLauncher.getDragLayer().removeView(finalView); 3211 } 3212 if ((animationType == ANIMATE_INTO_POSITION_AND_RESIZE || external) && finalView != null) { 3213 Bitmap crossFadeBitmap = createWidgetBitmap(info, finalView); 3214 dragView.setCrossFadeBitmap(crossFadeBitmap); 3215 dragView.crossFade((int) (duration * 0.8f)); 3216 } else if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && external) { 3217 scaleXY[0] = scaleXY[1] = Math.min(scaleXY[0], scaleXY[1]); 3218 } 3219 3220 DragLayer dragLayer = mLauncher.getDragLayer(); 3221 if (animationType == CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION) { 3222 mLauncher.getDragLayer().animateViewIntoPosition(dragView, finalPos, 0f, 0.1f, 0.1f, 3223 DragLayer.ANIMATION_END_DISAPPEAR, onCompleteRunnable, duration); 3224 } else { 3225 int endStyle; 3226 if (animationType == ANIMATE_INTO_POSITION_AND_REMAIN) { 3227 endStyle = DragLayer.ANIMATION_END_REMAIN_VISIBLE; 3228 } else { 3229 endStyle = DragLayer.ANIMATION_END_DISAPPEAR;; 3230 } 3231 3232 Runnable onComplete = new Runnable() { 3233 @Override 3234 public void run() { 3235 if (finalView != null) { 3236 finalView.setVisibility(VISIBLE); 3237 } 3238 if (onCompleteRunnable != null) { 3239 onCompleteRunnable.run(); 3240 } 3241 } 3242 }; 3243 dragLayer.animateViewIntoPosition(dragView, from.left, from.top, finalPos[0], 3244 finalPos[1], 1, 1, 1, scaleXY[0], scaleXY[1], onComplete, endStyle, 3245 duration, this); 3246 } 3247 } 3248 3249 public void setFinalTransitionTransform(CellLayout layout) { 3250 if (isSwitchingState()) { 3251 int index = indexOfChild(layout); 3252 mCurrentScaleX = layout.getScaleX(); 3253 mCurrentScaleY = layout.getScaleY(); 3254 mCurrentTranslationX = layout.getTranslationX(); 3255 mCurrentTranslationY = layout.getTranslationY(); 3256 mCurrentRotationY = layout.getRotationY(); 3257 layout.setScaleX(mNewScaleXs[index]); 3258 layout.setScaleY(mNewScaleYs[index]); 3259 layout.setTranslationX(mNewTranslationXs[index]); 3260 layout.setTranslationY(mNewTranslationYs[index]); 3261 layout.setRotationY(mNewRotationYs[index]); 3262 } 3263 } 3264 public void resetTransitionTransform(CellLayout layout) { 3265 if (isSwitchingState()) { 3266 mCurrentScaleX = layout.getScaleX(); 3267 mCurrentScaleY = layout.getScaleY(); 3268 mCurrentTranslationX = layout.getTranslationX(); 3269 mCurrentTranslationY = layout.getTranslationY(); 3270 mCurrentRotationY = layout.getRotationY(); 3271 layout.setScaleX(mCurrentScaleX); 3272 layout.setScaleY(mCurrentScaleY); 3273 layout.setTranslationX(mCurrentTranslationX); 3274 layout.setTranslationY(mCurrentTranslationY); 3275 layout.setRotationY(mCurrentRotationY); 3276 } 3277 } 3278 3279 /** 3280 * Return the current {@link CellLayout}, correctly picking the destination 3281 * screen while a scroll is in progress. 3282 */ 3283 public CellLayout getCurrentDropLayout() { 3284 return (CellLayout) getChildAt(mNextPage == INVALID_PAGE ? mCurrentPage : mNextPage); 3285 } 3286 3287 /** 3288 * Return the current CellInfo describing our current drag; this method exists 3289 * so that Launcher can sync this object with the correct info when the activity is created/ 3290 * destroyed 3291 * 3292 */ 3293 public CellLayout.CellInfo getDragInfo() { 3294 return mDragInfo; 3295 } 3296 3297 /** 3298 * Calculate the nearest cell where the given object would be dropped. 3299 * 3300 * pixelX and pixelY should be in the coordinate system of layout 3301 */ 3302 private int[] findNearestArea(int pixelX, int pixelY, 3303 int spanX, int spanY, CellLayout layout, int[] recycle) { 3304 return layout.findNearestArea( 3305 pixelX, pixelY, spanX, spanY, recycle); 3306 } 3307 3308 void setup(DragController dragController) { 3309 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3310 mDragController = dragController; 3311 3312 // hardware layers on children are enabled on startup, but should be disabled until 3313 // needed 3314 updateChildrenLayersEnabled(); 3315 setWallpaperDimension(); 3316 } 3317 3318 /** 3319 * Called at the end of a drag which originated on the workspace. 3320 */ 3321 public void onDropCompleted(View target, DragObject d, boolean isFlingToDelete, 3322 boolean success) { 3323 if (success) { 3324 if (target != this) { 3325 if (mDragInfo != null) { 3326 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 3327 if (mDragInfo.cell instanceof DropTarget) { 3328 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 3329 } 3330 } 3331 } 3332 } else if (mDragInfo != null) { 3333 CellLayout cellLayout; 3334 if (mLauncher.isHotseatLayout(target)) { 3335 cellLayout = mLauncher.getHotseat().getLayout(); 3336 } else { 3337 cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3338 } 3339 cellLayout.onDropChild(mDragInfo.cell); 3340 } 3341 if (d.cancelled && mDragInfo.cell != null) { 3342 mDragInfo.cell.setVisibility(VISIBLE); 3343 } 3344 mDragOutline = null; 3345 mDragInfo = null; 3346 3347 // Hide the scrolling indicator after you pick up an item 3348 hideScrollingIndicator(false); 3349 } 3350 3351 void updateItemLocationsInDatabase(CellLayout cl) { 3352 int count = cl.getShortcutsAndWidgets().getChildCount(); 3353 3354 int screen = indexOfChild(cl); 3355 int container = Favorites.CONTAINER_DESKTOP; 3356 3357 if (mLauncher.isHotseatLayout(cl)) { 3358 screen = -1; 3359 container = Favorites.CONTAINER_HOTSEAT; 3360 } 3361 3362 for (int i = 0; i < count; i++) { 3363 View v = cl.getShortcutsAndWidgets().getChildAt(i); 3364 ItemInfo info = (ItemInfo) v.getTag(); 3365 // Null check required as the AllApps button doesn't have an item info 3366 if (info != null) { 3367 LauncherModel.modifyItemInDatabase(mLauncher, info, container, screen, info.cellX, 3368 info.cellY, info.spanX, info.spanY); 3369 } 3370 } 3371 } 3372 3373 @Override 3374 public boolean supportsFlingToDelete() { 3375 return true; 3376 } 3377 3378 @Override 3379 public void onFlingToDelete(DragObject d, int x, int y, PointF vec) { 3380 // Do nothing 3381 } 3382 3383 @Override 3384 public void onFlingToDeleteCompleted() { 3385 // Do nothing 3386 } 3387 3388 public boolean isDropEnabled() { 3389 return true; 3390 } 3391 3392 @Override 3393 protected void onRestoreInstanceState(Parcelable state) { 3394 super.onRestoreInstanceState(state); 3395 Launcher.setScreen(mCurrentPage); 3396 } 3397 3398 @Override 3399 public void scrollLeft() { 3400 if (!isSmall() && !mIsSwitchingState) { 3401 super.scrollLeft(); 3402 } 3403 Folder openFolder = getOpenFolder(); 3404 if (openFolder != null) { 3405 openFolder.completeDragExit(); 3406 } 3407 } 3408 3409 @Override 3410 public void scrollRight() { 3411 if (!isSmall() && !mIsSwitchingState) { 3412 super.scrollRight(); 3413 } 3414 Folder openFolder = getOpenFolder(); 3415 if (openFolder != null) { 3416 openFolder.completeDragExit(); 3417 } 3418 } 3419 3420 @Override 3421 public boolean onEnterScrollArea(int x, int y, int direction) { 3422 // Ignore the scroll area if we are dragging over the hot seat 3423 boolean isPortrait = !LauncherApplication.isScreenLandscape(getContext()); 3424 if (mLauncher.getHotseat() != null && isPortrait) { 3425 Rect r = new Rect(); 3426 mLauncher.getHotseat().getHitRect(r); 3427 if (r.contains(x, y)) { 3428 return false; 3429 } 3430 } 3431 3432 boolean result = false; 3433 if (!isSmall() && !mIsSwitchingState) { 3434 mInScrollArea = true; 3435 3436 final int page = (mNextPage != INVALID_PAGE ? mNextPage : mCurrentPage) + 3437 (direction == DragController.SCROLL_LEFT ? -1 : 1); 3438 3439 // We always want to exit the current layout to ensure parity of enter / exit 3440 setCurrentDropLayout(null); 3441 3442 if (0 <= page && page < getChildCount()) { 3443 CellLayout layout = (CellLayout) getChildAt(page); 3444 setCurrentDragOverlappingLayout(layout); 3445 3446 // Workspace is responsible for drawing the edge glow on adjacent pages, 3447 // so we need to redraw the workspace when this may have changed. 3448 invalidate(); 3449 result = true; 3450 } 3451 } 3452 return result; 3453 } 3454 3455 @Override 3456 public boolean onExitScrollArea() { 3457 boolean result = false; 3458 if (mInScrollArea) { 3459 invalidate(); 3460 CellLayout layout = getCurrentDropLayout(); 3461 setCurrentDropLayout(layout); 3462 setCurrentDragOverlappingLayout(layout); 3463 3464 result = true; 3465 mInScrollArea = false; 3466 } 3467 return result; 3468 } 3469 3470 private void onResetScrollArea() { 3471 setCurrentDragOverlappingLayout(null); 3472 mInScrollArea = false; 3473 } 3474 3475 /** 3476 * Returns a specific CellLayout 3477 */ 3478 CellLayout getParentCellLayoutForView(View v) { 3479 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3480 for (CellLayout layout : layouts) { 3481 if (layout.getShortcutsAndWidgets().indexOfChild(v) > -1) { 3482 return layout; 3483 } 3484 } 3485 return null; 3486 } 3487 3488 /** 3489 * Returns a list of all the CellLayouts in the workspace. 3490 */ 3491 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3492 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3493 int screenCount = getChildCount(); 3494 for (int screen = 0; screen < screenCount; screen++) { 3495 layouts.add(((CellLayout) getChildAt(screen))); 3496 } 3497 if (mLauncher.getHotseat() != null) { 3498 layouts.add(mLauncher.getHotseat().getLayout()); 3499 } 3500 return layouts; 3501 } 3502 3503 /** 3504 * We should only use this to search for specific children. Do not use this method to modify 3505 * ShortcutsAndWidgetsContainer directly. Includes ShortcutAndWidgetContainers from 3506 * the hotseat and workspace pages 3507 */ 3508 ArrayList<ShortcutAndWidgetContainer> getAllShortcutAndWidgetContainers() { 3509 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3510 new ArrayList<ShortcutAndWidgetContainer>(); 3511 int screenCount = getChildCount(); 3512 for (int screen = 0; screen < screenCount; screen++) { 3513 childrenLayouts.add(((CellLayout) getChildAt(screen)).getShortcutsAndWidgets()); 3514 } 3515 if (mLauncher.getHotseat() != null) { 3516 childrenLayouts.add(mLauncher.getHotseat().getLayout().getShortcutsAndWidgets()); 3517 } 3518 return childrenLayouts; 3519 } 3520 3521 public Folder getFolderForTag(Object tag) { 3522 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3523 getAllShortcutAndWidgetContainers(); 3524 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3525 int count = layout.getChildCount(); 3526 for (int i = 0; i < count; i++) { 3527 View child = layout.getChildAt(i); 3528 if (child instanceof Folder) { 3529 Folder f = (Folder) child; 3530 if (f.getInfo() == tag && f.getInfo().opened) { 3531 return f; 3532 } 3533 } 3534 } 3535 } 3536 return null; 3537 } 3538 3539 public View getViewForTag(Object tag) { 3540 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3541 getAllShortcutAndWidgetContainers(); 3542 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3543 int count = layout.getChildCount(); 3544 for (int i = 0; i < count; i++) { 3545 View child = layout.getChildAt(i); 3546 if (child.getTag() == tag) { 3547 return child; 3548 } 3549 } 3550 } 3551 return null; 3552 } 3553 3554 void clearDropTargets() { 3555 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3556 getAllShortcutAndWidgetContainers(); 3557 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3558 int childCount = layout.getChildCount(); 3559 for (int j = 0; j < childCount; j++) { 3560 View v = layout.getChildAt(j); 3561 if (v instanceof DropTarget) { 3562 mDragController.removeDropTarget((DropTarget) v); 3563 } 3564 } 3565 } 3566 } 3567 3568 void removeItems(final ArrayList<ApplicationInfo> apps) { 3569 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3570 3571 final HashSet<String> packageNames = new HashSet<String>(); 3572 final int appCount = apps.size(); 3573 for (int i = 0; i < appCount; i++) { 3574 packageNames.add(apps.get(i).componentName.getPackageName()); 3575 } 3576 3577 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3578 for (final CellLayout layoutParent: cellLayouts) { 3579 final ViewGroup layout = layoutParent.getShortcutsAndWidgets(); 3580 3581 // Avoid ANRs by treating each screen separately 3582 post(new Runnable() { 3583 public void run() { 3584 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3585 childrenToRemove.clear(); 3586 3587 int childCount = layout.getChildCount(); 3588 for (int j = 0; j < childCount; j++) { 3589 final View view = layout.getChildAt(j); 3590 Object tag = view.getTag(); 3591 3592 if (tag instanceof ShortcutInfo) { 3593 final ShortcutInfo info = (ShortcutInfo) tag; 3594 final Intent intent = info.intent; 3595 final ComponentName name = intent.getComponent(); 3596 3597 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3598 for (String packageName: packageNames) { 3599 if (packageName.equals(name.getPackageName())) { 3600 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3601 childrenToRemove.add(view); 3602 } 3603 } 3604 } 3605 } else if (tag instanceof FolderInfo) { 3606 final FolderInfo info = (FolderInfo) tag; 3607 final ArrayList<ShortcutInfo> contents = info.contents; 3608 final int contentsCount = contents.size(); 3609 final ArrayList<ShortcutInfo> appsToRemoveFromFolder = 3610 new ArrayList<ShortcutInfo>(); 3611 3612 for (int k = 0; k < contentsCount; k++) { 3613 final ShortcutInfo appInfo = contents.get(k); 3614 final Intent intent = appInfo.intent; 3615 final ComponentName name = intent.getComponent(); 3616 3617 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3618 for (String packageName: packageNames) { 3619 if (packageName.equals(name.getPackageName())) { 3620 appsToRemoveFromFolder.add(appInfo); 3621 } 3622 } 3623 } 3624 } 3625 for (ShortcutInfo item: appsToRemoveFromFolder) { 3626 info.remove(item); 3627 LauncherModel.deleteItemFromDatabase(mLauncher, item); 3628 } 3629 } else if (tag instanceof LauncherAppWidgetInfo) { 3630 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3631 final AppWidgetProviderInfo provider = 3632 widgets.getAppWidgetInfo(info.appWidgetId); 3633 if (provider != null) { 3634 for (String packageName: packageNames) { 3635 if (packageName.equals(provider.provider.getPackageName())) { 3636 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3637 childrenToRemove.add(view); 3638 } 3639 } 3640 } 3641 } 3642 } 3643 3644 childCount = childrenToRemove.size(); 3645 for (int j = 0; j < childCount; j++) { 3646 View child = childrenToRemove.get(j); 3647 // Note: We can not remove the view directly from CellLayoutChildren as this 3648 // does not re-mark the spaces as unoccupied. 3649 layoutParent.removeViewInLayout(child); 3650 if (child instanceof DropTarget) { 3651 mDragController.removeDropTarget((DropTarget)child); 3652 } 3653 } 3654 3655 if (childCount > 0) { 3656 layout.requestLayout(); 3657 layout.invalidate(); 3658 } 3659 } 3660 }); 3661 } 3662 } 3663 3664 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3665 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = getAllShortcutAndWidgetContainers(); 3666 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3667 int childCount = layout.getChildCount(); 3668 for (int j = 0; j < childCount; j++) { 3669 final View view = layout.getChildAt(j); 3670 Object tag = view.getTag(); 3671 if (tag instanceof ShortcutInfo) { 3672 ShortcutInfo info = (ShortcutInfo) tag; 3673 // We need to check for ACTION_MAIN otherwise getComponent() might 3674 // return null for some shortcuts (for instance, for shortcuts to 3675 // web pages.) 3676 final Intent intent = info.intent; 3677 final ComponentName name = intent.getComponent(); 3678 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3679 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3680 final int appCount = apps.size(); 3681 for (int k = 0; k < appCount; k++) { 3682 ApplicationInfo app = apps.get(k); 3683 if (app.componentName.equals(name)) { 3684 BubbleTextView shortcut = (BubbleTextView) view; 3685 info.updateIcon(mIconCache); 3686 info.title = app.title.toString(); 3687 shortcut.applyFromShortcutInfo(info, mIconCache); 3688 } 3689 } 3690 } 3691 } 3692 } 3693 } 3694 } 3695 3696 void moveToDefaultScreen(boolean animate) { 3697 if (!isSmall()) { 3698 if (animate) { 3699 snapToPage(mDefaultPage); 3700 } else { 3701 setCurrentPage(mDefaultPage); 3702 } 3703 } 3704 getChildAt(mDefaultPage).requestFocus(); 3705 } 3706 3707 @Override 3708 public void syncPages() { 3709 } 3710 3711 @Override 3712 public void syncPageItems(int page, boolean immediate) { 3713 } 3714 3715 @Override 3716 protected String getCurrentPageDescription() { 3717 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 3718 return String.format(mContext.getString(R.string.workspace_scroll_format), 3719 page + 1, getChildCount()); 3720 } 3721 3722 public void getLocationInDragLayer(int[] loc) { 3723 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 3724 } 3725 3726 void setFadeForOverScroll(float fade) { 3727 if (!isScrollingIndicatorEnabled()) return; 3728 3729 mOverscrollFade = fade; 3730 float reducedFade = 0.5f + 0.5f * (1 - fade); 3731 final ViewGroup parent = (ViewGroup) getParent(); 3732 final ImageView qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3733 final ImageView dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3734 final View scrollIndicator = getScrollingIndicator(); 3735 3736 cancelScrollingIndicatorAnimations(); 3737 if (qsbDivider != null) qsbDivider.setAlpha(reducedFade); 3738 if (dockDivider != null) dockDivider.setAlpha(reducedFade); 3739 scrollIndicator.setAlpha(1 - fade); 3740 } 3741} 3742