Workspace.java revision 47639b9c1db9a5d0d89ce6b4b36d6b3c0d489602
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.AppWidgetProviderInfo; 28import android.content.ComponentName; 29import android.content.Context; 30import android.content.Intent; 31import android.content.SharedPreferences; 32import android.content.res.Resources; 33import android.content.res.TypedArray; 34import android.graphics.Bitmap; 35import android.graphics.Canvas; 36import android.graphics.Matrix; 37import android.graphics.Point; 38import android.graphics.PointF; 39import android.graphics.Rect; 40import android.graphics.Region.Op; 41import android.graphics.drawable.Drawable; 42import android.os.IBinder; 43import android.os.Parcelable; 44import android.util.AttributeSet; 45import android.util.Log; 46import android.util.SparseArray; 47import android.view.Display; 48import android.view.MotionEvent; 49import android.view.View; 50import android.view.ViewGroup; 51import android.view.animation.DecelerateInterpolator; 52import android.widget.ImageView; 53import android.widget.TextView; 54 55import com.android.launcher.R; 56import com.android.launcher2.FolderIcon.FolderRingAnimator; 57import com.android.launcher2.LauncherSettings.Favorites; 58 59import java.net.URISyntaxException; 60import java.util.ArrayList; 61import java.util.HashSet; 62import java.util.Iterator; 63import java.util.Set; 64 65/** 66 * The workspace is a wide area with a wallpaper and a finite number of pages. 67 * Each page contains a number of icons, folders or widgets the user can 68 * interact with. A workspace is meant to be used with a fixed width only. 69 */ 70public class Workspace extends SmoothPagedView 71 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 72 DragController.DragListener, LauncherTransitionable, ViewGroup.OnHierarchyChangeListener { 73 private static final String TAG = "Launcher.Workspace"; 74 75 // Y rotation to apply to the workspace screens 76 private static final float WORKSPACE_OVERSCROLL_ROTATION = 24f; 77 78 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 79 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 80 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 81 82 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 83 private static final int ADJACENT_SCREEN_DROP_DURATION = 300; 84 private static final int FLING_THRESHOLD_VELOCITY = 500; 85 86 // These animators are used to fade the children's outlines 87 private ObjectAnimator mChildrenOutlineFadeInAnimation; 88 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 89 private float mChildrenOutlineAlpha = 0; 90 91 // These properties refer to the background protection gradient used for AllApps and Customize 92 private ValueAnimator mBackgroundFadeInAnimation; 93 private ValueAnimator mBackgroundFadeOutAnimation; 94 private Drawable mBackground; 95 boolean mDrawBackground = true; 96 private float mBackgroundAlpha = 0; 97 private float mOverScrollMaxBackgroundAlpha = 0.0f; 98 99 private float mWallpaperScrollRatio = 1.0f; 100 private int mOriginalPageSpacing; 101 102 private final WallpaperManager mWallpaperManager; 103 private IBinder mWindowToken; 104 private static final float WALLPAPER_SCREENS_SPAN = 2f; 105 106 private int mDefaultPage; 107 108 /** 109 * CellInfo for the cell that is currently being dragged 110 */ 111 private CellLayout.CellInfo mDragInfo; 112 113 /** 114 * Target drop area calculated during last acceptDrop call. 115 */ 116 private int[] mTargetCell = new int[2]; 117 private int mDragOverX = -1; 118 private int mDragOverY = -1; 119 120 static Rect mLandscapeCellLayoutMetrics = null; 121 static Rect mPortraitCellLayoutMetrics = null; 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 int[] mTempVisiblePagesRange = new int[2]; 176 private float mOverscrollFade = 0; 177 private boolean mOverscrollTransformsSet; 178 public static final int DRAG_BITMAP_PADDING = 2; 179 private boolean mWorkspaceFadeInAdjacentScreens; 180 181 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 182 int mWallpaperWidth; 183 int mWallpaperHeight; 184 WallpaperOffsetInterpolator mWallpaperOffset; 185 boolean mUpdateWallpaperOffsetImmediately = false; 186 private Runnable mDelayedResizeRunnable; 187 private Runnable mDelayedSnapToPageRunnable; 188 private Point mDisplaySize = new Point(); 189 private boolean mIsStaticWallpaper; 190 private int mWallpaperTravelWidth; 191 private int mSpringLoadedPageSpacing; 192 private int mCameraDistance; 193 194 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 195 private static final int FOLDER_CREATION_TIMEOUT = 0; 196 private static final int REORDER_TIMEOUT = 250; 197 private final Alarm mFolderCreationAlarm = new Alarm(); 198 private final Alarm mReorderAlarm = new Alarm(); 199 private FolderRingAnimator mDragFolderRingAnimator = null; 200 private FolderIcon mDragOverFolderIcon = null; 201 private boolean mCreateUserFolderOnDrop = false; 202 private boolean mAddToExistingFolderOnDrop = false; 203 private DropTarget.DragEnforcer mDragEnforcer; 204 private float mMaxDistanceForFolderCreation; 205 206 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 207 private float mXDown; 208 private float mYDown; 209 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 210 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 211 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 212 213 // Relating to the animation of items being dropped externally 214 public static final int ANIMATE_INTO_POSITION_AND_DISAPPEAR = 0; 215 public static final int ANIMATE_INTO_POSITION_AND_REMAIN = 1; 216 public static final int ANIMATE_INTO_POSITION_AND_RESIZE = 2; 217 public static final int COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION = 3; 218 public static final int CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION = 4; 219 220 // Related to dragging, folder creation and reordering 221 private static final int DRAG_MODE_NONE = 0; 222 private static final int DRAG_MODE_CREATE_FOLDER = 1; 223 private static final int DRAG_MODE_ADD_TO_FOLDER = 2; 224 private static final int DRAG_MODE_REORDER = 3; 225 private int mDragMode = DRAG_MODE_NONE; 226 private int mLastReorderX = -1; 227 private int mLastReorderY = -1; 228 229 private SparseArray<Parcelable> mSavedStates; 230 private final ArrayList<Integer> mRestoredPages = new ArrayList<Integer>(); 231 232 // These variables are used for storing the initial and final values during workspace animations 233 private int mSavedScrollX; 234 private float mSavedRotationY; 235 private float mSavedTranslationX; 236 private float mCurrentScaleX; 237 private float mCurrentScaleY; 238 private float mCurrentRotationY; 239 private float mCurrentTranslationX; 240 private float mCurrentTranslationY; 241 private float[] mOldTranslationXs; 242 private float[] mOldTranslationYs; 243 private float[] mOldScaleXs; 244 private float[] mOldScaleYs; 245 private float[] mOldBackgroundAlphas; 246 private float[] mOldAlphas; 247 private float[] mNewTranslationXs; 248 private float[] mNewTranslationYs; 249 private float[] mNewScaleXs; 250 private float[] mNewScaleYs; 251 private float[] mNewBackgroundAlphas; 252 private float[] mNewAlphas; 253 private float[] mNewRotationYs; 254 private float mTransitionProgress; 255 256 private final Runnable mBindPages = new Runnable() { 257 @Override 258 public void run() { 259 mLauncher.getModel().bindRemainingSynchronousPages(); 260 } 261 }; 262 263 /** 264 * Used to inflate the Workspace from XML. 265 * 266 * @param context The application's context. 267 * @param attrs The attributes set containing the Workspace's customization values. 268 */ 269 public Workspace(Context context, AttributeSet attrs) { 270 this(context, attrs, 0); 271 } 272 273 /** 274 * Used to inflate the Workspace from XML. 275 * 276 * @param context The application's context. 277 * @param attrs The attributes set containing the Workspace's customization values. 278 * @param defStyle Unused. 279 */ 280 public Workspace(Context context, AttributeSet attrs, int defStyle) { 281 super(context, attrs, defStyle); 282 mContentIsRefreshable = false; 283 mOriginalPageSpacing = mPageSpacing; 284 285 mDragEnforcer = new DropTarget.DragEnforcer(context); 286 // With workspace, data is available straight from the get-go 287 setDataIsReady(); 288 289 mLauncher = (Launcher) context; 290 final Resources res = getResources(); 291 mWorkspaceFadeInAdjacentScreens = res.getBoolean(R.bool.config_workspaceFadeAdjacentScreens); 292 mFadeInAdjacentScreens = false; 293 mWallpaperManager = WallpaperManager.getInstance(context); 294 295 int cellCountX = DEFAULT_CELL_COUNT_X; 296 int cellCountY = DEFAULT_CELL_COUNT_Y; 297 298 TypedArray a = context.obtainStyledAttributes(attrs, 299 R.styleable.Workspace, defStyle, 0); 300 301 if (LauncherApplication.isScreenLarge()) { 302 // Determine number of rows/columns dynamically 303 // TODO: This code currently fails on tablets with an aspect ratio < 1.3. 304 // Around that ratio we should make cells the same size in portrait and 305 // landscape 306 TypedArray actionBarSizeTypedArray = 307 context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize }); 308 final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); 309 310 Point minDims = new Point(); 311 Point maxDims = new Point(); 312 mLauncher.getWindowManager().getDefaultDisplay().getCurrentSizeRange(minDims, maxDims); 313 314 cellCountX = 1; 315 while (CellLayout.widthInPortrait(res, cellCountX + 1) <= minDims.x) { 316 cellCountX++; 317 } 318 319 cellCountY = 1; 320 while (actionBarHeight + CellLayout.heightInLandscape(res, cellCountY + 1) 321 <= minDims.y) { 322 cellCountY++; 323 } 324 } 325 326 mSpringLoadedShrinkFactor = 327 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 328 mSpringLoadedPageSpacing = 329 res.getDimensionPixelSize(R.dimen.workspace_spring_loaded_page_spacing); 330 mCameraDistance = res.getInteger(R.integer.config_cameraDistance); 331 332 // if the value is manually specified, use that instead 333 cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX); 334 cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY); 335 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 336 a.recycle(); 337 338 setOnHierarchyChangeListener(this); 339 340 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 341 setHapticFeedbackEnabled(false); 342 343 initWorkspace(); 344 345 // Disable multitouch across the workspace/all apps/customize tray 346 setMotionEventSplittingEnabled(true); 347 348 // Unless otherwise specified this view is important for accessibility. 349 if (getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 350 setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 351 } 352 } 353 354 // estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each 355 // dimension if unsuccessful 356 public int[] estimateItemSize(int hSpan, int vSpan, 357 ItemInfo itemInfo, boolean springLoaded) { 358 int[] size = new int[2]; 359 if (getChildCount() > 0) { 360 CellLayout cl = (CellLayout) mLauncher.getWorkspace().getChildAt(0); 361 Rect r = estimateItemPosition(cl, itemInfo, 0, 0, hSpan, vSpan); 362 size[0] = r.width(); 363 size[1] = r.height(); 364 if (springLoaded) { 365 size[0] *= mSpringLoadedShrinkFactor; 366 size[1] *= mSpringLoadedShrinkFactor; 367 } 368 return size; 369 } else { 370 size[0] = Integer.MAX_VALUE; 371 size[1] = Integer.MAX_VALUE; 372 return size; 373 } 374 } 375 public Rect estimateItemPosition(CellLayout cl, ItemInfo pendingInfo, 376 int hCell, int vCell, int hSpan, int vSpan) { 377 Rect r = new Rect(); 378 cl.cellToRect(hCell, vCell, hSpan, vSpan, r); 379 return r; 380 } 381 382 public void onDragStart(DragSource source, Object info, int dragAction) { 383 mIsDragOccuring = true; 384 updateChildrenLayersEnabled(false); 385 mLauncher.lockScreenOrientation(); 386 setChildrenBackgroundAlphaMultipliers(1f); 387 // Prevent any Un/InstallShortcutReceivers from updating the db while we are dragging 388 InstallShortcutReceiver.enableInstallQueue(); 389 UninstallShortcutReceiver.enableUninstallQueue(); 390 } 391 392 public void onDragEnd() { 393 mIsDragOccuring = false; 394 updateChildrenLayersEnabled(false); 395 mLauncher.unlockScreenOrientation(false); 396 397 // Re-enable any Un/InstallShortcutReceiver and now process any queued items 398 InstallShortcutReceiver.disableAndFlushInstallQueue(getContext()); 399 UninstallShortcutReceiver.disableAndFlushUninstallQueue(getContext()); 400 } 401 402 /** 403 * Initializes various states for this workspace. 404 */ 405 protected void initWorkspace() { 406 Context context = getContext(); 407 mCurrentPage = mDefaultPage; 408 Launcher.setScreen(mCurrentPage); 409 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 410 mIconCache = app.getIconCache(); 411 setWillNotDraw(false); 412 setChildrenDrawnWithCacheEnabled(true); 413 414 final Resources res = getResources(); 415 try { 416 mBackground = res.getDrawable(R.drawable.apps_customize_bg); 417 } catch (Resources.NotFoundException e) { 418 // In this case, we will skip drawing background protection 419 } 420 421 mWallpaperOffset = new WallpaperOffsetInterpolator(); 422 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 423 display.getSize(mDisplaySize); 424 mWallpaperTravelWidth = (int) (mDisplaySize.x * 425 wallpaperTravelToScreenWidthRatio(mDisplaySize.x, mDisplaySize.y)); 426 427 mMaxDistanceForFolderCreation = (0.55f * res.getDimensionPixelSize(R.dimen.app_icon_size)); 428 mFlingThresholdVelocity = (int) (FLING_THRESHOLD_VELOCITY * mDensity); 429 } 430 431 @Override 432 protected int getScrollMode() { 433 return SmoothPagedView.X_LARGE_MODE; 434 } 435 436 @Override 437 public void onChildViewAdded(View parent, View child) { 438 if (!(child instanceof CellLayout)) { 439 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 440 } 441 CellLayout cl = ((CellLayout) child); 442 cl.setOnInterceptTouchListener(this); 443 cl.setClickable(true); 444 cl.setContentDescription(getContext().getString( 445 R.string.workspace_description_format, getChildCount())); 446 } 447 448 @Override 449 public void onChildViewRemoved(View parent, View child) { 450 } 451 452 protected boolean shouldDrawChild(View child) { 453 final CellLayout cl = (CellLayout) child; 454 return super.shouldDrawChild(child) && 455 (cl.getShortcutsAndWidgets().getAlpha() > 0 || 456 cl.getBackgroundAlpha() > 0); 457 } 458 459 /** 460 * @return The open folder on the current screen, or null if there is none 461 */ 462 Folder getOpenFolder() { 463 DragLayer dragLayer = mLauncher.getDragLayer(); 464 int count = dragLayer.getChildCount(); 465 for (int i = 0; i < count; i++) { 466 View child = dragLayer.getChildAt(i); 467 if (child instanceof Folder) { 468 Folder folder = (Folder) child; 469 if (folder.getInfo().opened) 470 return folder; 471 } 472 } 473 return null; 474 } 475 476 boolean isTouchActive() { 477 return mTouchState != TOUCH_STATE_REST; 478 } 479 480 /** 481 * Adds the specified child in the specified screen. The position and dimension of 482 * the child are defined by x, y, spanX and spanY. 483 * 484 * @param child The child to add in one of the workspace's screens. 485 * @param screen The screen in which to add the child. 486 * @param x The X position of the child in the screen's grid. 487 * @param y The Y position of the child in the screen's grid. 488 * @param spanX The number of cells spanned horizontally by the child. 489 * @param spanY The number of cells spanned vertically by the child. 490 */ 491 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY) { 492 addInScreen(child, container, screen, x, y, spanX, spanY, false); 493 } 494 495 /** 496 * Adds the specified child in the specified screen. The position and dimension of 497 * the child are defined by x, y, spanX and spanY. 498 * 499 * @param child The child to add in one of the workspace's screens. 500 * @param screen The screen in which to add the child. 501 * @param x The X position of the child in the screen's grid. 502 * @param y The Y position of the child in the screen's grid. 503 * @param spanX The number of cells spanned horizontally by the child. 504 * @param spanY The number of cells spanned vertically by the child. 505 * @param insert When true, the child is inserted at the beginning of the children list. 506 */ 507 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY, 508 boolean insert) { 509 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 510 if (screen < 0 || screen >= getChildCount()) { 511 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 512 + " (was " + screen + "); skipping child"); 513 return; 514 } 515 } 516 517 final CellLayout layout; 518 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 519 layout = mLauncher.getHotseat().getLayout(); 520 child.setOnKeyListener(null); 521 522 // Hide folder title in the hotseat 523 if (child instanceof FolderIcon) { 524 ((FolderIcon) child).setTextVisible(false); 525 } 526 527 if (screen < 0) { 528 screen = mLauncher.getHotseat().getOrderInHotseat(x, y); 529 } else { 530 // Note: We do this to ensure that the hotseat is always laid out in the orientation 531 // of the hotseat in order regardless of which orientation they were added 532 x = mLauncher.getHotseat().getCellXFromOrder(screen); 533 y = mLauncher.getHotseat().getCellYFromOrder(screen); 534 } 535 } else { 536 // Show folder title if not in the hotseat 537 if (child instanceof FolderIcon) { 538 ((FolderIcon) child).setTextVisible(true); 539 } 540 541 layout = (CellLayout) getChildAt(screen); 542 child.setOnKeyListener(new IconKeyEventListener()); 543 } 544 545 LayoutParams genericLp = child.getLayoutParams(); 546 CellLayout.LayoutParams lp; 547 if (genericLp == null || !(genericLp instanceof CellLayout.LayoutParams)) { 548 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 549 } else { 550 lp = (CellLayout.LayoutParams) genericLp; 551 lp.cellX = x; 552 lp.cellY = y; 553 lp.cellHSpan = spanX; 554 lp.cellVSpan = spanY; 555 } 556 557 if (spanX < 0 && spanY < 0) { 558 lp.isLockedToGrid = false; 559 } 560 561 // Get the canonical child id to uniquely represent this view in this screen 562 int childId = LauncherModel.getCellLayoutChildId(container, screen, x, y, spanX, spanY); 563 boolean markCellsAsOccupied = !(child instanceof Folder); 564 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 565 // TODO: This branch occurs when the workspace is adding views 566 // outside of the defined grid 567 // maybe we should be deleting these items from the LauncherModel? 568 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 569 } 570 571 if (!(child instanceof Folder)) { 572 child.setHapticFeedbackEnabled(false); 573 child.setOnLongClickListener(mLongClickListener); 574 } 575 if (child instanceof DropTarget) { 576 mDragController.addDropTarget((DropTarget) child); 577 } 578 } 579 580 /** 581 * Check if the point (x, y) hits a given page. 582 */ 583 private boolean hitsPage(int index, float x, float y) { 584 final View page = getChildAt(index); 585 if (page != null) { 586 float[] localXY = { x, y }; 587 mapPointFromSelfToChild(page, localXY); 588 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 589 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 590 } 591 return false; 592 } 593 594 @Override 595 protected boolean hitsPreviousPage(float x, float y) { 596 // mNextPage is set to INVALID_PAGE whenever we are stationary. 597 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 598 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 599 600 // Only allow tap to next page on large devices, where there's significant margin outside 601 // the active workspace 602 return LauncherApplication.isScreenLarge() && hitsPage(current - 1, x, y); 603 } 604 605 @Override 606 protected boolean hitsNextPage(float x, float y) { 607 // mNextPage is set to INVALID_PAGE whenever we are stationary. 608 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 609 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 610 611 // Only allow tap to next page on large devices, where there's significant margin outside 612 // the active workspace 613 return LauncherApplication.isScreenLarge() && hitsPage(current + 1, x, y); 614 } 615 616 /** 617 * Called directly from a CellLayout (not by the framework), after we've been added as a 618 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 619 * that it should intercept touch events, which is not something that is normally supported. 620 */ 621 @Override 622 public boolean onTouch(View v, MotionEvent event) { 623 return (isSmall() || !isFinishedSwitchingState()); 624 } 625 626 public boolean isSwitchingState() { 627 return mIsSwitchingState; 628 } 629 630 /** This differs from isSwitchingState in that we take into account how far the transition 631 * has completed. */ 632 public boolean isFinishedSwitchingState() { 633 return !mIsSwitchingState || (mTransitionProgress > 0.5f); 634 } 635 636 protected void onWindowVisibilityChanged (int visibility) { 637 mLauncher.onWindowVisibilityChanged(visibility); 638 } 639 640 @Override 641 public boolean dispatchUnhandledMove(View focused, int direction) { 642 if (isSmall() || !isFinishedSwitchingState()) { 643 // when the home screens are shrunken, shouldn't allow side-scrolling 644 return false; 645 } 646 return super.dispatchUnhandledMove(focused, direction); 647 } 648 649 @Override 650 public boolean onInterceptTouchEvent(MotionEvent ev) { 651 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 652 case MotionEvent.ACTION_DOWN: 653 mXDown = ev.getX(); 654 mYDown = ev.getY(); 655 break; 656 case MotionEvent.ACTION_POINTER_UP: 657 case MotionEvent.ACTION_UP: 658 if (mTouchState == TOUCH_STATE_REST) { 659 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 660 if (!currentPage.lastDownOnOccupiedCell()) { 661 onWallpaperTap(ev); 662 } 663 } 664 } 665 return super.onInterceptTouchEvent(ev); 666 } 667 668 protected void reinflateWidgetsIfNecessary() { 669 final int clCount = getChildCount(); 670 for (int i = 0; i < clCount; i++) { 671 CellLayout cl = (CellLayout) getChildAt(i); 672 ShortcutAndWidgetContainer swc = cl.getShortcutsAndWidgets(); 673 final int itemCount = swc.getChildCount(); 674 for (int j = 0; j < itemCount; j++) { 675 View v = swc.getChildAt(j); 676 677 if (v.getTag() instanceof LauncherAppWidgetInfo) { 678 LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) v.getTag(); 679 LauncherAppWidgetHostView lahv = (LauncherAppWidgetHostView) info.hostView; 680 if (lahv != null && lahv.orientationChangedSincedInflation()) { 681 mLauncher.removeAppWidget(info); 682 // Remove the current widget which is inflated with the wrong orientation 683 cl.removeView(lahv); 684 mLauncher.bindAppWidget(info); 685 } 686 } 687 } 688 } 689 } 690 691 @Override 692 protected void determineScrollingStart(MotionEvent ev) { 693 if (isSmall()) return; 694 if (!isFinishedSwitchingState()) return; 695 696 float deltaX = Math.abs(ev.getX() - mXDown); 697 float deltaY = Math.abs(ev.getY() - mYDown); 698 699 if (Float.compare(deltaX, 0f) == 0) return; 700 701 float slope = deltaY / deltaX; 702 float theta = (float) Math.atan(slope); 703 704 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 705 cancelCurrentPageLongPress(); 706 } 707 708 if (theta > MAX_SWIPE_ANGLE) { 709 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 710 return; 711 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 712 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 713 // increase the touch slop to make it harder to begin scrolling the workspace. This 714 // results in vertically scrolling widgets to more easily. The higher the angle, the 715 // more we increase touch slop. 716 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 717 float extraRatio = (float) 718 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 719 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 720 } else { 721 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 722 super.determineScrollingStart(ev); 723 } 724 } 725 726 protected void onPageBeginMoving() { 727 super.onPageBeginMoving(); 728 729 if (isHardwareAccelerated()) { 730 updateChildrenLayersEnabled(false); 731 } else { 732 if (mNextPage != INVALID_PAGE) { 733 // we're snapping to a particular screen 734 enableChildrenCache(mCurrentPage, mNextPage); 735 } else { 736 // this is when user is actively dragging a particular screen, they might 737 // swipe it either left or right (but we won't advance by more than one screen) 738 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 739 } 740 } 741 742 // Only show page outlines as we pan if we are on large screen 743 if (LauncherApplication.isScreenLarge()) { 744 showOutlines(); 745 mIsStaticWallpaper = mWallpaperManager.getWallpaperInfo() == null; 746 } 747 748 // If we are not fading in adjacent screens, we still need to restore the alpha in case the 749 // user scrolls while we are transitioning (should not affect dispatchDraw optimizations) 750 if (!mWorkspaceFadeInAdjacentScreens) { 751 for (int i = 0; i < getChildCount(); ++i) { 752 ((CellLayout) getPageAt(i)).setShortcutAndWidgetAlpha(1f); 753 } 754 } 755 756 // Show the scroll indicator as you pan the page 757 showScrollingIndicator(false); 758 } 759 760 protected void onPageEndMoving() { 761 super.onPageEndMoving(); 762 763 if (isHardwareAccelerated()) { 764 updateChildrenLayersEnabled(false); 765 } else { 766 clearChildrenCache(); 767 } 768 769 770 if (mDragController.isDragging()) { 771 if (isSmall()) { 772 // If we are in springloaded mode, then force an event to check if the current touch 773 // is under a new page (to scroll to) 774 mDragController.forceMoveEvent(); 775 } 776 } else { 777 // If we are not mid-dragging, hide the page outlines if we are on a large screen 778 if (LauncherApplication.isScreenLarge()) { 779 hideOutlines(); 780 } 781 782 // Hide the scroll indicator as you pan the page 783 if (!mDragController.isDragging()) { 784 hideScrollingIndicator(false); 785 } 786 } 787 mOverScrollMaxBackgroundAlpha = 0.0f; 788 789 if (mDelayedResizeRunnable != null) { 790 mDelayedResizeRunnable.run(); 791 mDelayedResizeRunnable = null; 792 } 793 794 if (mDelayedSnapToPageRunnable != null) { 795 mDelayedSnapToPageRunnable.run(); 796 mDelayedSnapToPageRunnable = null; 797 } 798 } 799 800 @Override 801 protected void notifyPageSwitchListener() { 802 super.notifyPageSwitchListener(); 803 Launcher.setScreen(mCurrentPage); 804 }; 805 806 // As a ratio of screen height, the total distance we want the parallax effect to span 807 // horizontally 808 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 809 float aspectRatio = width / (float) height; 810 811 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 812 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 813 // We will use these two data points to extrapolate how much the wallpaper parallax effect 814 // to span (ie travel) at any aspect ratio: 815 816 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 817 final float ASPECT_RATIO_PORTRAIT = 10/16f; 818 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 819 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 820 821 // To find out the desired width at different aspect ratios, we use the following two 822 // formulas, where the coefficient on x is the aspect ratio (width/height): 823 // (16/10)x + y = 1.5 824 // (10/16)x + y = 1.2 825 // We solve for x and y and end up with a final formula: 826 final float x = 827 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 828 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 829 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 830 return x * aspectRatio + y; 831 } 832 833 // The range of scroll values for Workspace 834 private int getScrollRange() { 835 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 836 } 837 838 protected void setWallpaperDimension() { 839 Point minDims = new Point(); 840 Point maxDims = new Point(); 841 mLauncher.getWindowManager().getDefaultDisplay().getCurrentSizeRange(minDims, maxDims); 842 843 final int maxDim = Math.max(maxDims.x, maxDims.y); 844 final int minDim = Math.min(minDims.x, minDims.y); 845 846 // We need to ensure that there is enough extra space in the wallpaper for the intended 847 // parallax effects 848 if (LauncherApplication.isScreenLarge()) { 849 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 850 mWallpaperHeight = maxDim; 851 } else { 852 mWallpaperWidth = Math.max((int) (minDim * WALLPAPER_SCREENS_SPAN), maxDim); 853 mWallpaperHeight = maxDim; 854 } 855 new Thread("setWallpaperDimension") { 856 public void run() { 857 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 858 } 859 }.start(); 860 } 861 862 private float wallpaperOffsetForCurrentScroll() { 863 // Set wallpaper offset steps (1 / (number of screens - 1)) 864 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f); 865 866 // For the purposes of computing the scrollRange and overScrollOffset, we assume 867 // that mLayoutScale is 1. This means that when we're in spring-loaded mode, 868 // there's no discrepancy between the wallpaper offset for a given page. 869 float layoutScale = mLayoutScale; 870 mLayoutScale = 1f; 871 int scrollRange = getScrollRange(); 872 873 // Again, we adjust the wallpaper offset to be consistent between values of mLayoutScale 874 float adjustedScrollX = Math.max(0, Math.min(getScrollX(), mMaxScrollX)); 875 adjustedScrollX *= mWallpaperScrollRatio; 876 mLayoutScale = layoutScale; 877 878 float scrollProgress = 879 adjustedScrollX / (float) scrollRange; 880 881 if (LauncherApplication.isScreenLarge() && mIsStaticWallpaper) { 882 // The wallpaper travel width is how far, from left to right, the wallpaper will move 883 // at this orientation. On tablets in portrait mode we don't move all the way to the 884 // edges of the wallpaper, or otherwise the parallax effect would be too strong. 885 int wallpaperTravelWidth = Math.min(mWallpaperTravelWidth, mWallpaperWidth); 886 887 float offsetInDips = wallpaperTravelWidth * scrollProgress + 888 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 889 float offset = offsetInDips / (float) mWallpaperWidth; 890 return offset; 891 } else { 892 return scrollProgress; 893 } 894 } 895 896 private void syncWallpaperOffsetWithScroll() { 897 final boolean enableWallpaperEffects = isHardwareAccelerated(); 898 if (enableWallpaperEffects) { 899 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 900 } 901 } 902 903 public void updateWallpaperOffsetImmediately() { 904 mUpdateWallpaperOffsetImmediately = true; 905 } 906 907 private void updateWallpaperOffsets() { 908 boolean updateNow = false; 909 boolean keepUpdating = true; 910 if (mUpdateWallpaperOffsetImmediately) { 911 updateNow = true; 912 keepUpdating = false; 913 mWallpaperOffset.jumpToFinal(); 914 mUpdateWallpaperOffsetImmediately = false; 915 } else { 916 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 917 } 918 if (updateNow) { 919 if (mWindowToken != null) { 920 mWallpaperManager.setWallpaperOffsets(mWindowToken, 921 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 922 } 923 } 924 if (keepUpdating) { 925 invalidate(); 926 } 927 } 928 929 @Override 930 protected void updateCurrentPageScroll() { 931 super.updateCurrentPageScroll(); 932 computeWallpaperScrollRatio(mCurrentPage); 933 } 934 935 @Override 936 protected void snapToPage(int whichPage) { 937 super.snapToPage(whichPage); 938 computeWallpaperScrollRatio(whichPage); 939 } 940 941 @Override 942 protected void snapToPage(int whichPage, int duration) { 943 super.snapToPage(whichPage, duration); 944 computeWallpaperScrollRatio(whichPage); 945 } 946 947 protected void snapToPage(int whichPage, Runnable r) { 948 if (mDelayedSnapToPageRunnable != null) { 949 mDelayedSnapToPageRunnable.run(); 950 } 951 mDelayedSnapToPageRunnable = r; 952 snapToPage(whichPage, SLOW_PAGE_SNAP_ANIMATION_DURATION); 953 } 954 955 private void computeWallpaperScrollRatio(int page) { 956 // Here, we determine what the desired scroll would be with and without a layout scale, 957 // and compute a ratio between the two. This allows us to adjust the wallpaper offset 958 // as though there is no layout scale. 959 float layoutScale = mLayoutScale; 960 int scaled = getChildOffset(page) - getRelativeChildOffset(page); 961 mLayoutScale = 1.0f; 962 float unscaled = getChildOffset(page) - getRelativeChildOffset(page); 963 mLayoutScale = layoutScale; 964 if (scaled > 0) { 965 mWallpaperScrollRatio = (1.0f * unscaled) / scaled; 966 } else { 967 mWallpaperScrollRatio = 1f; 968 } 969 } 970 971 class WallpaperOffsetInterpolator { 972 float mFinalHorizontalWallpaperOffset = 0.0f; 973 float mFinalVerticalWallpaperOffset = 0.5f; 974 float mHorizontalWallpaperOffset = 0.0f; 975 float mVerticalWallpaperOffset = 0.5f; 976 long mLastWallpaperOffsetUpdateTime; 977 boolean mIsMovingFast; 978 boolean mOverrideHorizontalCatchupConstant; 979 float mHorizontalCatchupConstant = 0.35f; 980 float mVerticalCatchupConstant = 0.35f; 981 982 public WallpaperOffsetInterpolator() { 983 } 984 985 public void setOverrideHorizontalCatchupConstant(boolean override) { 986 mOverrideHorizontalCatchupConstant = override; 987 } 988 989 public void setHorizontalCatchupConstant(float f) { 990 mHorizontalCatchupConstant = f; 991 } 992 993 public void setVerticalCatchupConstant(float f) { 994 mVerticalCatchupConstant = f; 995 } 996 997 public boolean computeScrollOffset() { 998 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 999 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 1000 mIsMovingFast = false; 1001 return false; 1002 } 1003 boolean isLandscape = mDisplaySize.x > mDisplaySize.y; 1004 1005 long currentTime = System.currentTimeMillis(); 1006 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 1007 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 1008 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 1009 1010 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 1011 if (!mIsMovingFast && xdiff > 0.07) { 1012 mIsMovingFast = true; 1013 } 1014 1015 float fractionToCatchUpIn1MsHorizontal; 1016 if (mOverrideHorizontalCatchupConstant) { 1017 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 1018 } else if (mIsMovingFast) { 1019 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 1020 } else { 1021 // slow 1022 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 1023 } 1024 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 1025 1026 fractionToCatchUpIn1MsHorizontal /= 33f; 1027 fractionToCatchUpIn1MsVertical /= 33f; 1028 1029 final float UPDATE_THRESHOLD = 0.00001f; 1030 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 1031 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 1032 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 1033 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 1034 1035 // Don't have any lag between workspace and wallpaper on non-large devices 1036 if (!LauncherApplication.isScreenLarge() || jumpToFinalValue) { 1037 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 1038 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 1039 } else { 1040 float percentToCatchUpVertical = 1041 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 1042 float percentToCatchUpHorizontal = 1043 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 1044 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 1045 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 1046 } 1047 1048 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 1049 return true; 1050 } 1051 1052 public float getCurrX() { 1053 return mHorizontalWallpaperOffset; 1054 } 1055 1056 public float getFinalX() { 1057 return mFinalHorizontalWallpaperOffset; 1058 } 1059 1060 public float getCurrY() { 1061 return mVerticalWallpaperOffset; 1062 } 1063 1064 public float getFinalY() { 1065 return mFinalVerticalWallpaperOffset; 1066 } 1067 1068 public void setFinalX(float x) { 1069 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 1070 } 1071 1072 public void setFinalY(float y) { 1073 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 1074 } 1075 1076 public void jumpToFinal() { 1077 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 1078 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 1079 } 1080 } 1081 1082 @Override 1083 public void computeScroll() { 1084 super.computeScroll(); 1085 syncWallpaperOffsetWithScroll(); 1086 } 1087 1088 void showOutlines() { 1089 if (!isSmall() && !mIsSwitchingState) { 1090 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1091 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1092 mChildrenOutlineFadeInAnimation = LauncherAnimUtils.ofFloat(this, "childrenOutlineAlpha", 1.0f); 1093 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 1094 mChildrenOutlineFadeInAnimation.start(); 1095 } 1096 } 1097 1098 void hideOutlines() { 1099 if (!isSmall() && !mIsSwitchingState) { 1100 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1101 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1102 mChildrenOutlineFadeOutAnimation = LauncherAnimUtils.ofFloat(this, "childrenOutlineAlpha", 0.0f); 1103 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 1104 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 1105 mChildrenOutlineFadeOutAnimation.start(); 1106 } 1107 } 1108 1109 public void showOutlinesTemporarily() { 1110 if (!mIsPageMoving && !isTouchActive()) { 1111 snapToPage(mCurrentPage); 1112 } 1113 } 1114 1115 public void setChildrenOutlineAlpha(float alpha) { 1116 mChildrenOutlineAlpha = alpha; 1117 for (int i = 0; i < getChildCount(); i++) { 1118 CellLayout cl = (CellLayout) getChildAt(i); 1119 cl.setBackgroundAlpha(alpha); 1120 } 1121 } 1122 1123 public float getChildrenOutlineAlpha() { 1124 return mChildrenOutlineAlpha; 1125 } 1126 1127 void disableBackground() { 1128 mDrawBackground = false; 1129 } 1130 void enableBackground() { 1131 mDrawBackground = true; 1132 } 1133 1134 private void animateBackgroundGradient(float finalAlpha, boolean animated) { 1135 if (mBackground == null) return; 1136 if (mBackgroundFadeInAnimation != null) { 1137 mBackgroundFadeInAnimation.cancel(); 1138 mBackgroundFadeInAnimation = null; 1139 } 1140 if (mBackgroundFadeOutAnimation != null) { 1141 mBackgroundFadeOutAnimation.cancel(); 1142 mBackgroundFadeOutAnimation = null; 1143 } 1144 float startAlpha = getBackgroundAlpha(); 1145 if (finalAlpha != startAlpha) { 1146 if (animated) { 1147 mBackgroundFadeOutAnimation = LauncherAnimUtils.ofFloat(startAlpha, finalAlpha); 1148 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1149 public void onAnimationUpdate(ValueAnimator animation) { 1150 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1151 } 1152 }); 1153 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1154 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1155 mBackgroundFadeOutAnimation.start(); 1156 } else { 1157 setBackgroundAlpha(finalAlpha); 1158 } 1159 } 1160 } 1161 1162 public void setBackgroundAlpha(float alpha) { 1163 if (alpha != mBackgroundAlpha) { 1164 mBackgroundAlpha = alpha; 1165 invalidate(); 1166 } 1167 } 1168 1169 public float getBackgroundAlpha() { 1170 return mBackgroundAlpha; 1171 } 1172 1173 float backgroundAlphaInterpolator(float r) { 1174 float pivotA = 0.1f; 1175 float pivotB = 0.4f; 1176 if (r < pivotA) { 1177 return 0; 1178 } else if (r > pivotB) { 1179 return 1.0f; 1180 } else { 1181 return (r - pivotA)/(pivotB - pivotA); 1182 } 1183 } 1184 1185 float overScrollBackgroundAlphaInterpolator(float r) { 1186 float threshold = 0.08f; 1187 1188 if (r > mOverScrollMaxBackgroundAlpha) { 1189 mOverScrollMaxBackgroundAlpha = r; 1190 } else if (r < mOverScrollMaxBackgroundAlpha) { 1191 r = mOverScrollMaxBackgroundAlpha; 1192 } 1193 1194 return Math.min(r / threshold, 1.0f); 1195 } 1196 1197 private void updatePageAlphaValues(int screenCenter) { 1198 boolean isInOverscroll = mOverScrollX < 0 || mOverScrollX > mMaxScrollX; 1199 if (mWorkspaceFadeInAdjacentScreens && 1200 mState == State.NORMAL && 1201 !mIsSwitchingState && 1202 !isInOverscroll) { 1203 for (int i = 0; i < getChildCount(); i++) { 1204 CellLayout child = (CellLayout) getChildAt(i); 1205 if (child != null) { 1206 float scrollProgress = getScrollProgress(screenCenter, child, i); 1207 float alpha = 1 - Math.abs(scrollProgress); 1208 child.getShortcutsAndWidgets().setAlpha(alpha); 1209 if (!mIsDragOccuring) { 1210 child.setBackgroundAlphaMultiplier( 1211 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1212 } else { 1213 child.setBackgroundAlphaMultiplier(1f); 1214 } 1215 } 1216 } 1217 } 1218 } 1219 1220 private void setChildrenBackgroundAlphaMultipliers(float a) { 1221 for (int i = 0; i < getChildCount(); i++) { 1222 CellLayout child = (CellLayout) getChildAt(i); 1223 child.setBackgroundAlphaMultiplier(a); 1224 } 1225 } 1226 1227 @Override 1228 protected void screenScrolled(int screenCenter) { 1229 super.screenScrolled(screenCenter); 1230 1231 updatePageAlphaValues(screenCenter); 1232 enableHwLayersOnVisiblePages(); 1233 1234 if (mOverScrollX < 0 || mOverScrollX > mMaxScrollX) { 1235 int index = mOverScrollX < 0 ? 0 : getChildCount() - 1; 1236 CellLayout cl = (CellLayout) getChildAt(index); 1237 float scrollProgress = getScrollProgress(screenCenter, cl, index); 1238 cl.setOverScrollAmount(Math.abs(scrollProgress), index == 0); 1239 float rotation = - WORKSPACE_OVERSCROLL_ROTATION * scrollProgress; 1240 cl.setRotationY(rotation); 1241 setFadeForOverScroll(Math.abs(scrollProgress)); 1242 if (!mOverscrollTransformsSet) { 1243 mOverscrollTransformsSet = true; 1244 cl.setCameraDistance(mDensity * mCameraDistance); 1245 cl.setPivotX(cl.getMeasuredWidth() * (index == 0 ? 0.75f : 0.25f)); 1246 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1247 cl.setOverscrollTransformsDirty(true); 1248 } 1249 } else { 1250 if (mOverscrollFade != 0) { 1251 setFadeForOverScroll(0); 1252 } 1253 if (mOverscrollTransformsSet) { 1254 mOverscrollTransformsSet = false; 1255 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1256 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1257 } 1258 } 1259 } 1260 1261 @Override 1262 protected void overScroll(float amount) { 1263 acceleratedOverScroll(amount); 1264 } 1265 1266 protected void onAttachedToWindow() { 1267 super.onAttachedToWindow(); 1268 mWindowToken = getWindowToken(); 1269 computeScroll(); 1270 mDragController.setWindowToken(mWindowToken); 1271 } 1272 1273 protected void onDetachedFromWindow() { 1274 mWindowToken = null; 1275 } 1276 1277 @Override 1278 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1279 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1280 mUpdateWallpaperOffsetImmediately = true; 1281 } 1282 super.onLayout(changed, left, top, right, bottom); 1283 } 1284 1285 @Override 1286 protected void onDraw(Canvas canvas) { 1287 updateWallpaperOffsets(); 1288 1289 // Draw the background gradient if necessary 1290 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1291 int alpha = (int) (mBackgroundAlpha * 255); 1292 mBackground.setAlpha(alpha); 1293 mBackground.setBounds(getScrollX(), 0, getScrollX() + getMeasuredWidth(), 1294 getMeasuredHeight()); 1295 mBackground.draw(canvas); 1296 } 1297 1298 super.onDraw(canvas); 1299 1300 // Call back to LauncherModel to finish binding after the first draw 1301 post(mBindPages); 1302 } 1303 1304 boolean isDrawingBackgroundGradient() { 1305 return (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground); 1306 } 1307 1308 @Override 1309 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1310 if (!mLauncher.isAllAppsVisible()) { 1311 final Folder openFolder = getOpenFolder(); 1312 if (openFolder != null) { 1313 return openFolder.requestFocus(direction, previouslyFocusedRect); 1314 } else { 1315 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1316 } 1317 } 1318 return false; 1319 } 1320 1321 @Override 1322 public int getDescendantFocusability() { 1323 if (isSmall()) { 1324 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1325 } 1326 return super.getDescendantFocusability(); 1327 } 1328 1329 @Override 1330 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1331 if (!mLauncher.isAllAppsVisible()) { 1332 final Folder openFolder = getOpenFolder(); 1333 if (openFolder != null) { 1334 openFolder.addFocusables(views, direction); 1335 } else { 1336 super.addFocusables(views, direction, focusableMode); 1337 } 1338 } 1339 } 1340 1341 public boolean isSmall() { 1342 return mState == State.SMALL || mState == State.SPRING_LOADED; 1343 } 1344 1345 void enableChildrenCache(int fromPage, int toPage) { 1346 if (fromPage > toPage) { 1347 final int temp = fromPage; 1348 fromPage = toPage; 1349 toPage = temp; 1350 } 1351 1352 final int screenCount = getChildCount(); 1353 1354 fromPage = Math.max(fromPage, 0); 1355 toPage = Math.min(toPage, screenCount - 1); 1356 1357 for (int i = fromPage; i <= toPage; i++) { 1358 final CellLayout layout = (CellLayout) getChildAt(i); 1359 layout.setChildrenDrawnWithCacheEnabled(true); 1360 layout.setChildrenDrawingCacheEnabled(true); 1361 } 1362 } 1363 1364 void clearChildrenCache() { 1365 final int screenCount = getChildCount(); 1366 for (int i = 0; i < screenCount; i++) { 1367 final CellLayout layout = (CellLayout) getChildAt(i); 1368 layout.setChildrenDrawnWithCacheEnabled(false); 1369 // In software mode, we don't want the items to continue to be drawn into bitmaps 1370 if (!isHardwareAccelerated()) { 1371 layout.setChildrenDrawingCacheEnabled(false); 1372 } 1373 } 1374 } 1375 1376 1377 private void updateChildrenLayersEnabled(boolean force) { 1378 boolean small = mState == State.SMALL || mIsSwitchingState; 1379 boolean enableChildrenLayers = force || small || mAnimatingViewIntoPlace || isPageMoving(); 1380 1381 if (enableChildrenLayers != mChildrenLayersEnabled) { 1382 mChildrenLayersEnabled = enableChildrenLayers; 1383 if (mChildrenLayersEnabled) { 1384 enableHwLayersOnVisiblePages(); 1385 } else { 1386 for (int i = 0; i < getPageCount(); i++) { 1387 final CellLayout cl = (CellLayout) getChildAt(i); 1388 cl.disableHardwareLayers(); 1389 } 1390 } 1391 } 1392 } 1393 1394 private void enableHwLayersOnVisiblePages() { 1395 if (mChildrenLayersEnabled) { 1396 final int screenCount = getChildCount(); 1397 getVisiblePages(mTempVisiblePagesRange); 1398 int leftScreen = mTempVisiblePagesRange[0]; 1399 int rightScreen = mTempVisiblePagesRange[1]; 1400 if (leftScreen == rightScreen) { 1401 // make sure we're caching at least two pages always 1402 if (rightScreen < screenCount - 1) { 1403 rightScreen++; 1404 } else if (leftScreen > 0) { 1405 leftScreen--; 1406 } 1407 } 1408 for (int i = 0; i < screenCount; i++) { 1409 final CellLayout layout = (CellLayout) getPageAt(i); 1410 if (!(leftScreen <= i && i <= rightScreen && shouldDrawChild(layout))) { 1411 layout.disableHardwareLayers(); 1412 } 1413 } 1414 for (int i = 0; i < screenCount; i++) { 1415 final CellLayout layout = (CellLayout) getPageAt(i); 1416 if (leftScreen <= i && i <= rightScreen && shouldDrawChild(layout)) { 1417 layout.enableHardwareLayers(); 1418 } 1419 } 1420 } 1421 } 1422 1423 public void buildPageHardwareLayers() { 1424 // force layers to be enabled just for the call to buildLayer 1425 updateChildrenLayersEnabled(true); 1426 if (getWindowToken() != null) { 1427 final int childCount = getChildCount(); 1428 for (int i = 0; i < childCount; i++) { 1429 CellLayout cl = (CellLayout) getChildAt(i); 1430 cl.buildHardwareLayer(); 1431 } 1432 } 1433 updateChildrenLayersEnabled(false); 1434 } 1435 1436 protected void onWallpaperTap(MotionEvent ev) { 1437 final int[] position = mTempCell; 1438 getLocationOnScreen(position); 1439 1440 int pointerIndex = ev.getActionIndex(); 1441 position[0] += (int) ev.getX(pointerIndex); 1442 position[1] += (int) ev.getY(pointerIndex); 1443 1444 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1445 ev.getAction() == MotionEvent.ACTION_UP 1446 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1447 position[0], position[1], 0, null); 1448 } 1449 1450 /* 1451 * This interpolator emulates the rate at which the perceived scale of an object changes 1452 * as its distance from a camera increases. When this interpolator is applied to a scale 1453 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1454 * from the camera. 1455 */ 1456 static class ZInterpolator implements TimeInterpolator { 1457 private float focalLength; 1458 1459 public ZInterpolator(float foc) { 1460 focalLength = foc; 1461 } 1462 1463 public float getInterpolation(float input) { 1464 return (1.0f - focalLength / (focalLength + input)) / 1465 (1.0f - focalLength / (focalLength + 1.0f)); 1466 } 1467 } 1468 1469 /* 1470 * The exact reverse of ZInterpolator. 1471 */ 1472 static class InverseZInterpolator implements TimeInterpolator { 1473 private ZInterpolator zInterpolator; 1474 public InverseZInterpolator(float foc) { 1475 zInterpolator = new ZInterpolator(foc); 1476 } 1477 public float getInterpolation(float input) { 1478 return 1 - zInterpolator.getInterpolation(1 - input); 1479 } 1480 } 1481 1482 /* 1483 * ZInterpolator compounded with an ease-out. 1484 */ 1485 static class ZoomOutInterpolator implements TimeInterpolator { 1486 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(0.75f); 1487 private final ZInterpolator zInterpolator = new ZInterpolator(0.13f); 1488 1489 public float getInterpolation(float input) { 1490 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1491 } 1492 } 1493 1494 /* 1495 * InvereZInterpolator compounded with an ease-out. 1496 */ 1497 static class ZoomInInterpolator implements TimeInterpolator { 1498 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1499 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1500 1501 public float getInterpolation(float input) { 1502 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1503 } 1504 } 1505 1506 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1507 1508 /* 1509 * 1510 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1511 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1512 * 1513 * These methods mark the appropriate pages as accepting drops (which alters their visual 1514 * appearance). 1515 * 1516 */ 1517 public void onDragStartedWithItem(View v) { 1518 final Canvas canvas = new Canvas(); 1519 1520 // The outline is used to visualize where the item will land if dropped 1521 mDragOutline = createDragOutline(v, canvas, DRAG_BITMAP_PADDING); 1522 } 1523 1524 public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, boolean clipAlpha) { 1525 final Canvas canvas = new Canvas(); 1526 1527 int[] size = estimateItemSize(info.spanX, info.spanY, info, false); 1528 1529 // The outline is used to visualize where the item will land if dropped 1530 mDragOutline = createDragOutline(b, canvas, DRAG_BITMAP_PADDING, size[0], 1531 size[1], clipAlpha); 1532 } 1533 1534 public void exitWidgetResizeMode() { 1535 DragLayer dragLayer = mLauncher.getDragLayer(); 1536 dragLayer.clearAllResizeFrames(); 1537 } 1538 1539 private void initAnimationArrays() { 1540 final int childCount = getChildCount(); 1541 if (mOldTranslationXs != null) return; 1542 mOldTranslationXs = new float[childCount]; 1543 mOldTranslationYs = new float[childCount]; 1544 mOldScaleXs = new float[childCount]; 1545 mOldScaleYs = new float[childCount]; 1546 mOldBackgroundAlphas = new float[childCount]; 1547 mOldAlphas = new float[childCount]; 1548 mNewTranslationXs = new float[childCount]; 1549 mNewTranslationYs = new float[childCount]; 1550 mNewScaleXs = new float[childCount]; 1551 mNewScaleYs = new float[childCount]; 1552 mNewBackgroundAlphas = new float[childCount]; 1553 mNewAlphas = new float[childCount]; 1554 mNewRotationYs = new float[childCount]; 1555 } 1556 1557 Animator getChangeStateAnimation(final State state, boolean animated) { 1558 return getChangeStateAnimation(state, animated, 0); 1559 } 1560 1561 Animator getChangeStateAnimation(final State state, boolean animated, int delay) { 1562 if (mState == state) { 1563 return null; 1564 } 1565 1566 // Initialize animation arrays for the first time if necessary 1567 initAnimationArrays(); 1568 1569 AnimatorSet anim = animated ? LauncherAnimUtils.createAnimatorSet() : null; 1570 1571 // Stop any scrolling, move to the current page right away 1572 setCurrentPage(getNextPage()); 1573 1574 final State oldState = mState; 1575 final boolean oldStateIsNormal = (oldState == State.NORMAL); 1576 final boolean oldStateIsSpringLoaded = (oldState == State.SPRING_LOADED); 1577 final boolean oldStateIsSmall = (oldState == State.SMALL); 1578 mState = state; 1579 final boolean stateIsNormal = (state == State.NORMAL); 1580 final boolean stateIsSpringLoaded = (state == State.SPRING_LOADED); 1581 final boolean stateIsSmall = (state == State.SMALL); 1582 float finalScaleFactor = 1.0f; 1583 float finalBackgroundAlpha = stateIsSpringLoaded ? 1.0f : 0f; 1584 float translationX = 0; 1585 float translationY = 0; 1586 boolean zoomIn = true; 1587 1588 if (state != State.NORMAL) { 1589 finalScaleFactor = mSpringLoadedShrinkFactor - (stateIsSmall ? 0.1f : 0); 1590 setPageSpacing(mSpringLoadedPageSpacing); 1591 if (oldStateIsNormal && stateIsSmall) { 1592 zoomIn = false; 1593 setLayoutScale(finalScaleFactor); 1594 updateChildrenLayersEnabled(false); 1595 } else { 1596 finalBackgroundAlpha = 1.0f; 1597 setLayoutScale(finalScaleFactor); 1598 } 1599 } else { 1600 setPageSpacing(mOriginalPageSpacing); 1601 setLayoutScale(1.0f); 1602 } 1603 1604 final int duration = zoomIn ? 1605 getResources().getInteger(R.integer.config_workspaceUnshrinkTime) : 1606 getResources().getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1607 for (int i = 0; i < getChildCount(); i++) { 1608 final CellLayout cl = (CellLayout) getChildAt(i); 1609 float finalAlpha = (!mWorkspaceFadeInAdjacentScreens || stateIsSpringLoaded || 1610 (i == mCurrentPage)) ? 1f : 0f; 1611 float currentAlpha = cl.getShortcutsAndWidgets().getAlpha(); 1612 float initialAlpha = currentAlpha; 1613 1614 // Determine the pages alpha during the state transition 1615 if ((oldStateIsSmall && stateIsNormal) || 1616 (oldStateIsNormal && stateIsSmall)) { 1617 // To/from workspace - only show the current page unless the transition is not 1618 // animated and the animation end callback below doesn't run; 1619 // or, if we're in spring-loaded mode 1620 if (i == mCurrentPage || !animated || oldStateIsSpringLoaded) { 1621 finalAlpha = 1f; 1622 } else { 1623 initialAlpha = 0f; 1624 finalAlpha = 0f; 1625 } 1626 } 1627 1628 mOldAlphas[i] = initialAlpha; 1629 mNewAlphas[i] = finalAlpha; 1630 if (animated) { 1631 mOldTranslationXs[i] = cl.getTranslationX(); 1632 mOldTranslationYs[i] = cl.getTranslationY(); 1633 mOldScaleXs[i] = cl.getScaleX(); 1634 mOldScaleYs[i] = cl.getScaleY(); 1635 mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1636 1637 mNewTranslationXs[i] = translationX; 1638 mNewTranslationYs[i] = translationY; 1639 mNewScaleXs[i] = finalScaleFactor; 1640 mNewScaleYs[i] = finalScaleFactor; 1641 mNewBackgroundAlphas[i] = finalBackgroundAlpha; 1642 } else { 1643 cl.setTranslationX(translationX); 1644 cl.setTranslationY(translationY); 1645 cl.setScaleX(finalScaleFactor); 1646 cl.setScaleY(finalScaleFactor); 1647 cl.setBackgroundAlpha(finalBackgroundAlpha); 1648 cl.setShortcutAndWidgetAlpha(finalAlpha); 1649 } 1650 } 1651 1652 if (animated) { 1653 for (int index = 0; index < getChildCount(); index++) { 1654 final int i = index; 1655 final CellLayout cl = (CellLayout) getChildAt(i); 1656 float currentAlpha = cl.getShortcutsAndWidgets().getAlpha(); 1657 if (mOldAlphas[i] == 0 && mNewAlphas[i] == 0) { 1658 cl.setTranslationX(mNewTranslationXs[i]); 1659 cl.setTranslationY(mNewTranslationYs[i]); 1660 cl.setScaleX(mNewScaleXs[i]); 1661 cl.setScaleY(mNewScaleYs[i]); 1662 cl.setBackgroundAlpha(mNewBackgroundAlphas[i]); 1663 cl.setShortcutAndWidgetAlpha(mNewAlphas[i]); 1664 cl.setRotationY(mNewRotationYs[i]); 1665 } else { 1666 LauncherViewPropertyAnimator a = new LauncherViewPropertyAnimator(cl); 1667 a.translationX(mNewTranslationXs[i]) 1668 .translationY(mNewTranslationYs[i]) 1669 .scaleX(mNewScaleXs[i]) 1670 .scaleY(mNewScaleYs[i]) 1671 .setDuration(duration) 1672 .setInterpolator(mZoomInInterpolator); 1673 anim.play(a); 1674 1675 if (mOldAlphas[i] != mNewAlphas[i] || currentAlpha != mNewAlphas[i]) { 1676 LauncherViewPropertyAnimator alphaAnim = 1677 new LauncherViewPropertyAnimator(cl.getShortcutsAndWidgets()); 1678 alphaAnim.alpha(mNewAlphas[i]) 1679 .setDuration(duration) 1680 .setInterpolator(mZoomInInterpolator); 1681 anim.play(alphaAnim); 1682 } 1683 if (mOldBackgroundAlphas[i] != 0 || 1684 mNewBackgroundAlphas[i] != 0) { 1685 ValueAnimator bgAnim = LauncherAnimUtils.ofFloat(0f, 1f).setDuration(duration); 1686 bgAnim.setInterpolator(mZoomInInterpolator); 1687 bgAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1688 public void onAnimationUpdate(float a, float b) { 1689 cl.setBackgroundAlpha( 1690 a * mOldBackgroundAlphas[i] + 1691 b * mNewBackgroundAlphas[i]); 1692 } 1693 }); 1694 anim.play(bgAnim); 1695 } 1696 } 1697 } 1698 buildPageHardwareLayers(); 1699 anim.setStartDelay(delay); 1700 } 1701 1702 if (stateIsSpringLoaded) { 1703 // Right now we're covered by Apps Customize 1704 // Show the background gradient immediately, so the gradient will 1705 // be showing once AppsCustomize disappears 1706 animateBackgroundGradient(getResources().getInteger( 1707 R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, false); 1708 } else { 1709 // Fade the background gradient away 1710 animateBackgroundGradient(0f, true); 1711 } 1712 return anim; 1713 } 1714 1715 @Override 1716 public void onLauncherTransitionPrepare(Launcher l, boolean animated, boolean toWorkspace) { 1717 mIsSwitchingState = true; 1718 cancelScrollingIndicatorAnimations(); 1719 } 1720 1721 @Override 1722 public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) { 1723 } 1724 1725 @Override 1726 public void onLauncherTransitionStep(Launcher l, float t) { 1727 mTransitionProgress = t; 1728 } 1729 1730 @Override 1731 public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) { 1732 mIsSwitchingState = false; 1733 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 1734 updateChildrenLayersEnabled(false); 1735 // The code in getChangeStateAnimation to determine initialAlpha and finalAlpha will ensure 1736 // ensure that only the current page is visible during (and subsequently, after) the 1737 // transition animation. If fade adjacent pages is disabled, then re-enable the page 1738 // visibility after the transition animation. 1739 if (!mWorkspaceFadeInAdjacentScreens) { 1740 for (int i = 0; i < getChildCount(); i++) { 1741 final CellLayout cl = (CellLayout) getChildAt(i); 1742 cl.setShortcutAndWidgetAlpha(1f); 1743 } 1744 } 1745 } 1746 1747 @Override 1748 public View getContent() { 1749 return this; 1750 } 1751 1752 /** 1753 * Draw the View v into the given Canvas. 1754 * 1755 * @param v the view to draw 1756 * @param destCanvas the canvas to draw on 1757 * @param padding the horizontal and vertical padding to use when drawing 1758 */ 1759 private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { 1760 final Rect clipRect = mTempRect; 1761 v.getDrawingRect(clipRect); 1762 1763 boolean textVisible = false; 1764 1765 destCanvas.save(); 1766 if (v instanceof TextView && pruneToDrawable) { 1767 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1768 clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); 1769 destCanvas.translate(padding / 2, padding / 2); 1770 d.draw(destCanvas); 1771 } else { 1772 if (v instanceof FolderIcon) { 1773 // For FolderIcons the text can bleed into the icon area, and so we need to 1774 // hide the text completely (which can't be achieved by clipping). 1775 if (((FolderIcon) v).getTextVisible()) { 1776 ((FolderIcon) v).setTextVisible(false); 1777 textVisible = true; 1778 } 1779 } else if (v instanceof BubbleTextView) { 1780 final BubbleTextView tv = (BubbleTextView) v; 1781 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1782 tv.getLayout().getLineTop(0); 1783 } else if (v instanceof TextView) { 1784 final TextView tv = (TextView) v; 1785 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1786 tv.getLayout().getLineTop(0); 1787 } 1788 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1789 destCanvas.clipRect(clipRect, Op.REPLACE); 1790 v.draw(destCanvas); 1791 1792 // Restore text visibility of FolderIcon if necessary 1793 if (textVisible) { 1794 ((FolderIcon) v).setTextVisible(true); 1795 } 1796 } 1797 destCanvas.restore(); 1798 } 1799 1800 /** 1801 * Returns a new bitmap to show when the given View is being dragged around. 1802 * Responsibility for the bitmap is transferred to the caller. 1803 */ 1804 public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1805 Bitmap b; 1806 1807 if (v instanceof TextView) { 1808 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1809 b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, 1810 d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); 1811 } else { 1812 b = Bitmap.createBitmap( 1813 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1814 } 1815 1816 canvas.setBitmap(b); 1817 drawDragView(v, canvas, padding, true); 1818 canvas.setBitmap(null); 1819 1820 return b; 1821 } 1822 1823 /** 1824 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1825 * Responsibility for the bitmap is transferred to the caller. 1826 */ 1827 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1828 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1829 final Bitmap b = Bitmap.createBitmap( 1830 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1831 1832 canvas.setBitmap(b); 1833 drawDragView(v, canvas, padding, true); 1834 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1835 canvas.setBitmap(null); 1836 return b; 1837 } 1838 1839 /** 1840 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1841 * Responsibility for the bitmap is transferred to the caller. 1842 */ 1843 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h, 1844 boolean clipAlpha) { 1845 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1846 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1847 canvas.setBitmap(b); 1848 1849 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 1850 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 1851 (h - padding) / (float) orig.getHeight()); 1852 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 1853 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 1854 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 1855 1856 // center the image 1857 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 1858 1859 canvas.drawBitmap(orig, src, dst, null); 1860 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor, 1861 clipAlpha); 1862 canvas.setBitmap(null); 1863 1864 return b; 1865 } 1866 1867 void startDrag(CellLayout.CellInfo cellInfo) { 1868 View child = cellInfo.cell; 1869 1870 // Make sure the drag was started by a long press as opposed to a long click. 1871 if (!child.isInTouchMode()) { 1872 return; 1873 } 1874 1875 mDragInfo = cellInfo; 1876 child.setVisibility(INVISIBLE); 1877 CellLayout layout = (CellLayout) child.getParent().getParent(); 1878 layout.prepareChildForDrag(child); 1879 1880 child.clearFocus(); 1881 child.setPressed(false); 1882 1883 final Canvas canvas = new Canvas(); 1884 1885 // The outline is used to visualize where the item will land if dropped 1886 mDragOutline = createDragOutline(child, canvas, DRAG_BITMAP_PADDING); 1887 beginDragShared(child, this); 1888 } 1889 1890 public void beginDragShared(View child, DragSource source) { 1891 Resources r = getResources(); 1892 1893 // The drag bitmap follows the touch point around on the screen 1894 final Bitmap b = createDragBitmap(child, new Canvas(), DRAG_BITMAP_PADDING); 1895 1896 final int bmpWidth = b.getWidth(); 1897 final int bmpHeight = b.getHeight(); 1898 1899 float scale = mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 1900 int dragLayerX = 1901 Math.round(mTempXY[0] - (bmpWidth - scale * child.getWidth()) / 2); 1902 int dragLayerY = 1903 Math.round(mTempXY[1] - (bmpHeight - scale * bmpHeight) / 2 1904 - DRAG_BITMAP_PADDING / 2); 1905 1906 Point dragVisualizeOffset = null; 1907 Rect dragRect = null; 1908 if (child instanceof BubbleTextView || child instanceof PagedViewIcon) { 1909 int iconSize = r.getDimensionPixelSize(R.dimen.app_icon_size); 1910 int iconPaddingTop = r.getDimensionPixelSize(R.dimen.app_icon_padding_top); 1911 int top = child.getPaddingTop(); 1912 int left = (bmpWidth - iconSize) / 2; 1913 int right = left + iconSize; 1914 int bottom = top + iconSize; 1915 dragLayerY += top; 1916 // Note: The drag region is used to calculate drag layer offsets, but the 1917 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 1918 dragVisualizeOffset = new Point(-DRAG_BITMAP_PADDING / 2, 1919 iconPaddingTop - DRAG_BITMAP_PADDING / 2); 1920 dragRect = new Rect(left, top, right, bottom); 1921 } else if (child instanceof FolderIcon) { 1922 int previewSize = r.getDimensionPixelSize(R.dimen.folder_preview_size); 1923 dragRect = new Rect(0, 0, child.getWidth(), previewSize); 1924 } 1925 1926 // Clear the pressed state if necessary 1927 if (child instanceof BubbleTextView) { 1928 BubbleTextView icon = (BubbleTextView) child; 1929 icon.clearPressedOrFocusedBackground(); 1930 } 1931 1932 mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 1933 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect, scale); 1934 b.recycle(); 1935 1936 // Show the scrolling indicator when you pick up an item 1937 showScrollingIndicator(false); 1938 } 1939 1940 void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, int screen, 1941 int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { 1942 View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); 1943 1944 final int[] cellXY = new int[2]; 1945 target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1946 addInScreen(view, container, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1947 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, cellXY[0], 1948 cellXY[1]); 1949 } 1950 1951 public boolean transitionStateShouldAllowDrop() { 1952 return ((!isSwitchingState() || mTransitionProgress > 0.5f) && mState != State.SMALL); 1953 } 1954 1955 /** 1956 * {@inheritDoc} 1957 */ 1958 public boolean acceptDrop(DragObject d) { 1959 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1960 CellLayout dropTargetLayout = mDropToLayout; 1961 if (d.dragSource != this) { 1962 // Don't accept the drop if we're not over a screen at time of drop 1963 if (dropTargetLayout == null) { 1964 return false; 1965 } 1966 if (!transitionStateShouldAllowDrop()) return false; 1967 1968 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 1969 d.dragView, mDragViewVisualCenter); 1970 1971 // We want the point to be mapped to the dragTarget. 1972 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 1973 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 1974 } else { 1975 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 1976 } 1977 1978 int spanX = 1; 1979 int spanY = 1; 1980 if (mDragInfo != null) { 1981 final CellLayout.CellInfo dragCellInfo = mDragInfo; 1982 spanX = dragCellInfo.spanX; 1983 spanY = dragCellInfo.spanY; 1984 } else { 1985 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 1986 spanX = dragInfo.spanX; 1987 spanY = dragInfo.spanY; 1988 } 1989 1990 int minSpanX = spanX; 1991 int minSpanY = spanY; 1992 if (d.dragInfo instanceof PendingAddWidgetInfo) { 1993 minSpanX = ((PendingAddWidgetInfo) d.dragInfo).minSpanX; 1994 minSpanY = ((PendingAddWidgetInfo) d.dragInfo).minSpanY; 1995 } 1996 1997 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 1998 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, dropTargetLayout, 1999 mTargetCell); 2000 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2001 mDragViewVisualCenter[1], mTargetCell); 2002 if (willCreateUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, 2003 mTargetCell, distance, true)) { 2004 return true; 2005 } 2006 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, 2007 mTargetCell, distance)) { 2008 return true; 2009 } 2010 2011 int[] resultSpan = new int[2]; 2012 mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], 2013 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2014 null, mTargetCell, resultSpan, CellLayout.MODE_ACCEPT_DROP); 2015 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2016 2017 // Don't accept the drop if there's no room for the item 2018 if (!foundCell) { 2019 // Don't show the message if we are dropping on the AllApps button and the hotseat 2020 // is full 2021 boolean isHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2022 if (mTargetCell != null && isHotseat) { 2023 Hotseat hotseat = mLauncher.getHotseat(); 2024 if (hotseat.isAllAppsButtonRank( 2025 hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { 2026 return false; 2027 } 2028 } 2029 2030 mLauncher.showOutOfSpaceMessage(isHotseat); 2031 return false; 2032 } 2033 } 2034 return true; 2035 } 2036 2037 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, float 2038 distance, boolean considerTimeout) { 2039 if (distance > mMaxDistanceForFolderCreation) return false; 2040 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2041 2042 if (dropOverView != null) { 2043 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2044 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2045 return false; 2046 } 2047 } 2048 2049 boolean hasntMoved = false; 2050 if (mDragInfo != null) { 2051 hasntMoved = dropOverView == mDragInfo.cell; 2052 } 2053 2054 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2055 return false; 2056 } 2057 2058 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2059 boolean willBecomeShortcut = 2060 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2061 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2062 2063 return (aboveShortcut && willBecomeShortcut); 2064 } 2065 2066 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell, 2067 float distance) { 2068 if (distance > mMaxDistanceForFolderCreation) return false; 2069 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2070 2071 if (dropOverView != null) { 2072 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2073 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2074 return false; 2075 } 2076 } 2077 2078 if (dropOverView instanceof FolderIcon) { 2079 FolderIcon fi = (FolderIcon) dropOverView; 2080 if (fi.acceptDrop(dragInfo)) { 2081 return true; 2082 } 2083 } 2084 return false; 2085 } 2086 2087 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2088 int[] targetCell, float distance, boolean external, DragView dragView, 2089 Runnable postAnimationRunnable) { 2090 if (distance > mMaxDistanceForFolderCreation) return false; 2091 View v = target.getChildAt(targetCell[0], targetCell[1]); 2092 2093 boolean hasntMoved = false; 2094 if (mDragInfo != null) { 2095 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2096 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2097 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2098 } 2099 2100 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2101 mCreateUserFolderOnDrop = false; 2102 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 2103 2104 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2105 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2106 2107 if (aboveShortcut && willBecomeShortcut) { 2108 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2109 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2110 // if the drag started here, we need to remove it from the workspace 2111 if (!external) { 2112 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2113 } 2114 2115 Rect folderLocation = new Rect(); 2116 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2117 target.removeView(v); 2118 2119 FolderIcon fi = 2120 mLauncher.addFolder(target, container, screen, targetCell[0], targetCell[1]); 2121 destInfo.cellX = -1; 2122 destInfo.cellY = -1; 2123 sourceInfo.cellX = -1; 2124 sourceInfo.cellY = -1; 2125 2126 // If the dragView is null, we can't animate 2127 boolean animate = dragView != null; 2128 if (animate) { 2129 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2130 postAnimationRunnable); 2131 } else { 2132 fi.addItem(destInfo); 2133 fi.addItem(sourceInfo); 2134 } 2135 return true; 2136 } 2137 return false; 2138 } 2139 2140 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2141 float distance, DragObject d, boolean external) { 2142 if (distance > mMaxDistanceForFolderCreation) return false; 2143 2144 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2145 if (!mAddToExistingFolderOnDrop) return false; 2146 mAddToExistingFolderOnDrop = false; 2147 2148 if (dropOverView instanceof FolderIcon) { 2149 FolderIcon fi = (FolderIcon) dropOverView; 2150 if (fi.acceptDrop(d.dragInfo)) { 2151 fi.onDrop(d); 2152 2153 // if the drag started here, we need to remove it from the workspace 2154 if (!external) { 2155 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2156 } 2157 return true; 2158 } 2159 } 2160 return false; 2161 } 2162 2163 public void onDrop(final DragObject d) { 2164 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2165 mDragViewVisualCenter); 2166 2167 CellLayout dropTargetLayout = mDropToLayout; 2168 2169 // We want the point to be mapped to the dragTarget. 2170 if (dropTargetLayout != null) { 2171 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 2172 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2173 } else { 2174 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 2175 } 2176 } 2177 2178 int snapScreen = -1; 2179 boolean resizeOnDrop = false; 2180 if (d.dragSource != this) { 2181 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2182 (int) mDragViewVisualCenter[1] }; 2183 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2184 } else if (mDragInfo != null) { 2185 final View cell = mDragInfo.cell; 2186 2187 Runnable resizeRunnable = null; 2188 if (dropTargetLayout != null) { 2189 // Move internally 2190 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2191 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2192 long container = hasMovedIntoHotseat ? 2193 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2194 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2195 int screen = (mTargetCell[0] < 0) ? 2196 mDragInfo.screen : indexOfChild(dropTargetLayout); 2197 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2198 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2199 // First we find the cell nearest to point at which the item is 2200 // dropped, without any consideration to whether there is an item there. 2201 2202 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2203 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2204 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2205 mDragViewVisualCenter[1], mTargetCell); 2206 2207 // If the item being dropped is a shortcut and the nearest drop 2208 // cell also contains a shortcut, then create a folder with the two shortcuts. 2209 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2210 dropTargetLayout, mTargetCell, distance, false, d.dragView, null)) { 2211 return; 2212 } 2213 2214 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, 2215 distance, d, false)) { 2216 return; 2217 } 2218 2219 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2220 // we need to find the nearest cell location that is vacant 2221 ItemInfo item = (ItemInfo) d.dragInfo; 2222 int minSpanX = item.spanX; 2223 int minSpanY = item.spanY; 2224 if (item.minSpanX > 0 && item.minSpanY > 0) { 2225 minSpanX = item.minSpanX; 2226 minSpanY = item.minSpanY; 2227 } 2228 2229 int[] resultSpan = new int[2]; 2230 mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], 2231 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, cell, 2232 mTargetCell, resultSpan, CellLayout.MODE_ON_DROP); 2233 2234 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2235 2236 // if the widget resizes on drop 2237 if (foundCell && (cell instanceof AppWidgetHostView) && 2238 (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY)) { 2239 resizeOnDrop = true; 2240 item.spanX = resultSpan[0]; 2241 item.spanY = resultSpan[1]; 2242 AppWidgetHostView awhv = (AppWidgetHostView) cell; 2243 AppWidgetResizeFrame.updateWidgetSizeRanges(awhv, mLauncher, resultSpan[0], 2244 resultSpan[1]); 2245 } 2246 2247 if (mCurrentPage != screen && !hasMovedIntoHotseat) { 2248 snapScreen = screen; 2249 snapToPage(screen); 2250 } 2251 2252 if (foundCell) { 2253 final ItemInfo info = (ItemInfo) cell.getTag(); 2254 if (hasMovedLayouts) { 2255 // Reparent the view 2256 getParentCellLayoutForView(cell).removeView(cell); 2257 addInScreen(cell, container, screen, mTargetCell[0], mTargetCell[1], 2258 info.spanX, info.spanY); 2259 } 2260 2261 // update the item's position after drop 2262 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2263 lp.cellX = lp.tmpCellX = mTargetCell[0]; 2264 lp.cellY = lp.tmpCellY = mTargetCell[1]; 2265 lp.cellHSpan = item.spanX; 2266 lp.cellVSpan = item.spanY; 2267 lp.isLockedToGrid = true; 2268 cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screen, 2269 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2270 2271 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2272 cell instanceof LauncherAppWidgetHostView) { 2273 final CellLayout cellLayout = dropTargetLayout; 2274 // We post this call so that the widget has a chance to be placed 2275 // in its final location 2276 2277 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2278 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2279 if (pinfo != null && 2280 pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2281 final Runnable addResizeFrame = new Runnable() { 2282 public void run() { 2283 DragLayer dragLayer = mLauncher.getDragLayer(); 2284 dragLayer.addResizeFrame(info, hostView, cellLayout); 2285 } 2286 }; 2287 resizeRunnable = (new Runnable() { 2288 public void run() { 2289 if (!isPageMoving()) { 2290 addResizeFrame.run(); 2291 } else { 2292 mDelayedResizeRunnable = addResizeFrame; 2293 } 2294 } 2295 }); 2296 } 2297 } 2298 2299 LauncherModel.moveItemInDatabase(mLauncher, info, container, screen, lp.cellX, 2300 lp.cellY); 2301 } else { 2302 // If we can't find a drop location, we return the item to its original position 2303 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2304 mTargetCell[0] = lp.cellX; 2305 mTargetCell[1] = lp.cellY; 2306 CellLayout layout = (CellLayout) cell.getParent().getParent(); 2307 layout.markCellsAsOccupiedForView(cell); 2308 } 2309 } 2310 2311 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2312 final Runnable finalResizeRunnable = resizeRunnable; 2313 // Prepare it to be animated into its new position 2314 // This must be called after the view has been re-parented 2315 final Runnable onCompleteRunnable = new Runnable() { 2316 @Override 2317 public void run() { 2318 mAnimatingViewIntoPlace = false; 2319 updateChildrenLayersEnabled(false); 2320 if (finalResizeRunnable != null) { 2321 finalResizeRunnable.run(); 2322 } 2323 } 2324 }; 2325 mAnimatingViewIntoPlace = true; 2326 if (d.dragView.hasDrawn()) { 2327 final ItemInfo info = (ItemInfo) cell.getTag(); 2328 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET) { 2329 int animationType = resizeOnDrop ? ANIMATE_INTO_POSITION_AND_RESIZE : 2330 ANIMATE_INTO_POSITION_AND_DISAPPEAR; 2331 animateWidgetDrop(info, parent, d.dragView, 2332 onCompleteRunnable, animationType, cell, false); 2333 } else { 2334 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2335 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2336 onCompleteRunnable, this); 2337 } 2338 } else { 2339 d.deferDragViewCleanupPostAnimation = false; 2340 cell.setVisibility(VISIBLE); 2341 } 2342 parent.onDropChild(cell); 2343 } 2344 } 2345 2346 public void setFinalScrollForPageChange(int screen) { 2347 if (screen >= 0) { 2348 mSavedScrollX = getScrollX(); 2349 CellLayout cl = (CellLayout) getChildAt(screen); 2350 mSavedTranslationX = cl.getTranslationX(); 2351 mSavedRotationY = cl.getRotationY(); 2352 final int newX = getChildOffset(screen) - getRelativeChildOffset(screen); 2353 setScrollX(newX); 2354 cl.setTranslationX(0f); 2355 cl.setRotationY(0f); 2356 } 2357 } 2358 2359 public void resetFinalScrollForPageChange(int screen) { 2360 if (screen >= 0) { 2361 CellLayout cl = (CellLayout) getChildAt(screen); 2362 setScrollX(mSavedScrollX); 2363 cl.setTranslationX(mSavedTranslationX); 2364 cl.setRotationY(mSavedRotationY); 2365 } 2366 } 2367 2368 public void getViewLocationRelativeToSelf(View v, int[] location) { 2369 getLocationInWindow(location); 2370 int x = location[0]; 2371 int y = location[1]; 2372 2373 v.getLocationInWindow(location); 2374 int vX = location[0]; 2375 int vY = location[1]; 2376 2377 location[0] = vX - x; 2378 location[1] = vY - y; 2379 } 2380 2381 public void onDragEnter(DragObject d) { 2382 mDragEnforcer.onDragEnter(); 2383 mCreateUserFolderOnDrop = false; 2384 mAddToExistingFolderOnDrop = false; 2385 2386 mDropToLayout = null; 2387 CellLayout layout = getCurrentDropLayout(); 2388 setCurrentDropLayout(layout); 2389 setCurrentDragOverlappingLayout(layout); 2390 2391 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2392 // don't need to show the outlines 2393 if (LauncherApplication.isScreenLarge()) { 2394 showOutlines(); 2395 } 2396 } 2397 2398 static Rect getCellLayoutMetrics(Launcher launcher, int orientation) { 2399 Resources res = launcher.getResources(); 2400 Display display = launcher.getWindowManager().getDefaultDisplay(); 2401 Point smallestSize = new Point(); 2402 Point largestSize = new Point(); 2403 display.getCurrentSizeRange(smallestSize, largestSize); 2404 if (orientation == CellLayout.LANDSCAPE) { 2405 if (mLandscapeCellLayoutMetrics == null) { 2406 int paddingLeft = res.getDimensionPixelSize(R.dimen.workspace_left_padding_land); 2407 int paddingRight = res.getDimensionPixelSize(R.dimen.workspace_right_padding_land); 2408 int paddingTop = res.getDimensionPixelSize(R.dimen.workspace_top_padding_land); 2409 int paddingBottom = res.getDimensionPixelSize(R.dimen.workspace_bottom_padding_land); 2410 int width = largestSize.x - paddingLeft - paddingRight; 2411 int height = smallestSize.y - paddingTop - paddingBottom; 2412 mLandscapeCellLayoutMetrics = new Rect(); 2413 CellLayout.getMetrics(mLandscapeCellLayoutMetrics, res, 2414 width, height, LauncherModel.getCellCountX(), LauncherModel.getCellCountY(), 2415 orientation); 2416 } 2417 return mLandscapeCellLayoutMetrics; 2418 } else if (orientation == CellLayout.PORTRAIT) { 2419 if (mPortraitCellLayoutMetrics == null) { 2420 int paddingLeft = res.getDimensionPixelSize(R.dimen.workspace_left_padding_land); 2421 int paddingRight = res.getDimensionPixelSize(R.dimen.workspace_right_padding_land); 2422 int paddingTop = res.getDimensionPixelSize(R.dimen.workspace_top_padding_land); 2423 int paddingBottom = res.getDimensionPixelSize(R.dimen.workspace_bottom_padding_land); 2424 int width = smallestSize.x - paddingLeft - paddingRight; 2425 int height = largestSize.y - paddingTop - paddingBottom; 2426 mPortraitCellLayoutMetrics = new Rect(); 2427 CellLayout.getMetrics(mPortraitCellLayoutMetrics, res, 2428 width, height, LauncherModel.getCellCountX(), LauncherModel.getCellCountY(), 2429 orientation); 2430 } 2431 return mPortraitCellLayoutMetrics; 2432 } 2433 return null; 2434 } 2435 2436 public void onDragExit(DragObject d) { 2437 mDragEnforcer.onDragExit(); 2438 2439 // Here we store the final page that will be dropped to, if the workspace in fact 2440 // receives the drop 2441 if (mInScrollArea) { 2442 if (isPageMoving()) { 2443 // If the user drops while the page is scrolling, we should use that page as the 2444 // destination instead of the page that is being hovered over. 2445 mDropToLayout = (CellLayout) getPageAt(getNextPage()); 2446 } else { 2447 mDropToLayout = mDragOverlappingLayout; 2448 } 2449 } else { 2450 mDropToLayout = mDragTargetLayout; 2451 } 2452 2453 if (mDragMode == DRAG_MODE_CREATE_FOLDER) { 2454 mCreateUserFolderOnDrop = true; 2455 } else if (mDragMode == DRAG_MODE_ADD_TO_FOLDER) { 2456 mAddToExistingFolderOnDrop = true; 2457 } 2458 2459 // Reset the scroll area and previous drag target 2460 onResetScrollArea(); 2461 setCurrentDropLayout(null); 2462 setCurrentDragOverlappingLayout(null); 2463 2464 mSpringLoadedDragController.cancel(); 2465 2466 if (!mIsPageMoving) { 2467 hideOutlines(); 2468 } 2469 } 2470 2471 void setCurrentDropLayout(CellLayout layout) { 2472 if (mDragTargetLayout != null) { 2473 mDragTargetLayout.revertTempState(); 2474 mDragTargetLayout.onDragExit(); 2475 } 2476 mDragTargetLayout = layout; 2477 if (mDragTargetLayout != null) { 2478 mDragTargetLayout.onDragEnter(); 2479 } 2480 cleanupReorder(true); 2481 cleanupFolderCreation(); 2482 setCurrentDropOverCell(-1, -1); 2483 } 2484 2485 void setCurrentDragOverlappingLayout(CellLayout layout) { 2486 if (mDragOverlappingLayout != null) { 2487 mDragOverlappingLayout.setIsDragOverlapping(false); 2488 } 2489 mDragOverlappingLayout = layout; 2490 if (mDragOverlappingLayout != null) { 2491 mDragOverlappingLayout.setIsDragOverlapping(true); 2492 } 2493 invalidate(); 2494 } 2495 2496 void setCurrentDropOverCell(int x, int y) { 2497 if (x != mDragOverX || y != mDragOverY) { 2498 mDragOverX = x; 2499 mDragOverY = y; 2500 setDragMode(DRAG_MODE_NONE); 2501 } 2502 } 2503 2504 void setDragMode(int dragMode) { 2505 if (dragMode != mDragMode) { 2506 if (dragMode == DRAG_MODE_NONE) { 2507 cleanupAddToFolder(); 2508 // We don't want to cancel the re-order alarm every time the target cell changes 2509 // as this feels to slow / unresponsive. 2510 cleanupReorder(false); 2511 cleanupFolderCreation(); 2512 } else if (dragMode == DRAG_MODE_ADD_TO_FOLDER) { 2513 cleanupReorder(true); 2514 cleanupFolderCreation(); 2515 } else if (dragMode == DRAG_MODE_CREATE_FOLDER) { 2516 cleanupAddToFolder(); 2517 cleanupReorder(true); 2518 } else if (dragMode == DRAG_MODE_REORDER) { 2519 cleanupAddToFolder(); 2520 cleanupFolderCreation(); 2521 } 2522 mDragMode = dragMode; 2523 } 2524 } 2525 2526 private void cleanupFolderCreation() { 2527 if (mDragFolderRingAnimator != null) { 2528 mDragFolderRingAnimator.animateToNaturalState(); 2529 } 2530 mFolderCreationAlarm.cancelAlarm(); 2531 } 2532 2533 private void cleanupAddToFolder() { 2534 if (mDragOverFolderIcon != null) { 2535 mDragOverFolderIcon.onDragExit(null); 2536 mDragOverFolderIcon = null; 2537 } 2538 } 2539 2540 private void cleanupReorder(boolean cancelAlarm) { 2541 // Any pending reorders are canceled 2542 if (cancelAlarm) { 2543 mReorderAlarm.cancelAlarm(); 2544 } 2545 mLastReorderX = -1; 2546 mLastReorderY = -1; 2547 } 2548 2549 public DropTarget getDropTargetDelegate(DragObject d) { 2550 return null; 2551 } 2552 2553 /* 2554 * 2555 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2556 * coordinate space. The argument xy is modified with the return result. 2557 * 2558 */ 2559 void mapPointFromSelfToChild(View v, float[] xy) { 2560 mapPointFromSelfToChild(v, xy, null); 2561 } 2562 2563 /* 2564 * 2565 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2566 * coordinate space. The argument xy is modified with the return result. 2567 * 2568 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2569 * computing it itself; we use this to avoid redundant matrix inversions in 2570 * findMatchingPageForDragOver 2571 * 2572 */ 2573 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2574 if (cachedInverseMatrix == null) { 2575 v.getMatrix().invert(mTempInverseMatrix); 2576 cachedInverseMatrix = mTempInverseMatrix; 2577 } 2578 int scrollX = getScrollX(); 2579 if (mNextPage != INVALID_PAGE) { 2580 scrollX = mScroller.getFinalX(); 2581 } 2582 xy[0] = xy[0] + scrollX - v.getLeft(); 2583 xy[1] = xy[1] + getScrollY() - v.getTop(); 2584 cachedInverseMatrix.mapPoints(xy); 2585 } 2586 2587 2588 void mapPointFromSelfToHotseatLayout(Hotseat hotseat, float[] xy) { 2589 hotseat.getLayout().getMatrix().invert(mTempInverseMatrix); 2590 xy[0] = xy[0] - hotseat.getLeft() - hotseat.getLayout().getLeft(); 2591 xy[1] = xy[1] - hotseat.getTop() - hotseat.getLayout().getTop(); 2592 mTempInverseMatrix.mapPoints(xy); 2593 } 2594 2595 /* 2596 * 2597 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2598 * the parent View's coordinate space. The argument xy is modified with the return result. 2599 * 2600 */ 2601 void mapPointFromChildToSelf(View v, float[] xy) { 2602 v.getMatrix().mapPoints(xy); 2603 int scrollX = getScrollX(); 2604 if (mNextPage != INVALID_PAGE) { 2605 scrollX = mScroller.getFinalX(); 2606 } 2607 xy[0] -= (scrollX - v.getLeft()); 2608 xy[1] -= (getScrollY() - v.getTop()); 2609 } 2610 2611 static private float squaredDistance(float[] point1, float[] point2) { 2612 float distanceX = point1[0] - point2[0]; 2613 float distanceY = point2[1] - point2[1]; 2614 return distanceX * distanceX + distanceY * distanceY; 2615 } 2616 2617 /* 2618 * 2619 * Returns true if the passed CellLayout cl overlaps with dragView 2620 * 2621 */ 2622 boolean overlaps(CellLayout cl, DragView dragView, 2623 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2624 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2625 final float[] draggedItemTopLeft = mTempDragCoordinates; 2626 draggedItemTopLeft[0] = dragViewX; 2627 draggedItemTopLeft[1] = dragViewY; 2628 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2629 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2630 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2631 2632 // Transform the dragged item's top left coordinates 2633 // to the CellLayout's local coordinates 2634 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2635 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2636 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2637 2638 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2639 // Transform the dragged item's bottom right coordinates 2640 // to the CellLayout's local coordinates 2641 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2642 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2643 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2644 2645 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2646 float overlap = (overlapRegionRight - overlapRegionLeft) * 2647 (overlapRegionBottom - overlapRegionTop); 2648 if (overlap > 0) { 2649 return true; 2650 } 2651 } 2652 } 2653 return false; 2654 } 2655 2656 /* 2657 * 2658 * This method returns the CellLayout that is currently being dragged to. In order to drag 2659 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2660 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2661 * 2662 * Return null if no CellLayout is currently being dragged over 2663 * 2664 */ 2665 private CellLayout findMatchingPageForDragOver( 2666 DragView dragView, float originX, float originY, boolean exact) { 2667 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2668 // with the item being dragged and then choose the one that's closest to the touch point 2669 final int screenCount = getChildCount(); 2670 CellLayout bestMatchingScreen = null; 2671 float smallestDistSoFar = Float.MAX_VALUE; 2672 2673 for (int i = 0; i < screenCount; i++) { 2674 CellLayout cl = (CellLayout) getChildAt(i); 2675 2676 final float[] touchXy = {originX, originY}; 2677 // Transform the touch coordinates to the CellLayout's local coordinates 2678 // If the touch point is within the bounds of the cell layout, we can return immediately 2679 cl.getMatrix().invert(mTempInverseMatrix); 2680 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2681 2682 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2683 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2684 return cl; 2685 } 2686 2687 if (!exact) { 2688 // Get the center of the cell layout in screen coordinates 2689 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2690 cellLayoutCenter[0] = cl.getWidth()/2; 2691 cellLayoutCenter[1] = cl.getHeight()/2; 2692 mapPointFromChildToSelf(cl, cellLayoutCenter); 2693 2694 touchXy[0] = originX; 2695 touchXy[1] = originY; 2696 2697 // Calculate the distance between the center of the CellLayout 2698 // and the touch point 2699 float dist = squaredDistance(touchXy, cellLayoutCenter); 2700 2701 if (dist < smallestDistSoFar) { 2702 smallestDistSoFar = dist; 2703 bestMatchingScreen = cl; 2704 } 2705 } 2706 } 2707 return bestMatchingScreen; 2708 } 2709 2710 // This is used to compute the visual center of the dragView. This point is then 2711 // used to visualize drop locations and determine where to drop an item. The idea is that 2712 // the visual center represents the user's interpretation of where the item is, and hence 2713 // is the appropriate point to use when determining drop location. 2714 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2715 DragView dragView, float[] recycle) { 2716 float res[]; 2717 if (recycle == null) { 2718 res = new float[2]; 2719 } else { 2720 res = recycle; 2721 } 2722 2723 // First off, the drag view has been shifted in a way that is not represented in the 2724 // x and y values or the x/yOffsets. Here we account for that shift. 2725 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2726 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2727 2728 // These represent the visual top and left of drag view if a dragRect was provided. 2729 // If a dragRect was not provided, then they correspond to the actual view left and 2730 // top, as the dragRect is in that case taken to be the entire dragView. 2731 // R.dimen.dragViewOffsetY. 2732 int left = x - xOffset; 2733 int top = y - yOffset; 2734 2735 // In order to find the visual center, we shift by half the dragRect 2736 res[0] = left + dragView.getDragRegion().width() / 2; 2737 res[1] = top + dragView.getDragRegion().height() / 2; 2738 2739 return res; 2740 } 2741 2742 private boolean isDragWidget(DragObject d) { 2743 return (d.dragInfo instanceof LauncherAppWidgetInfo || 2744 d.dragInfo instanceof PendingAddWidgetInfo); 2745 } 2746 private boolean isExternalDragWidget(DragObject d) { 2747 return d.dragSource != this && isDragWidget(d); 2748 } 2749 2750 public void onDragOver(DragObject d) { 2751 // Skip drag over events while we are dragging over side pages 2752 if (mInScrollArea || mIsSwitchingState || mState == State.SMALL) return; 2753 2754 Rect r = new Rect(); 2755 CellLayout layout = null; 2756 ItemInfo item = (ItemInfo) d.dragInfo; 2757 2758 // Ensure that we have proper spans for the item that we are dropping 2759 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2760 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2761 d.dragView, mDragViewVisualCenter); 2762 2763 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2764 // Identify whether we have dragged over a side page 2765 if (isSmall()) { 2766 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 2767 mLauncher.getHotseat().getHitRect(r); 2768 if (r.contains(d.x, d.y)) { 2769 layout = mLauncher.getHotseat().getLayout(); 2770 } 2771 } 2772 if (layout == null) { 2773 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false); 2774 } 2775 if (layout != mDragTargetLayout) { 2776 2777 setCurrentDropLayout(layout); 2778 setCurrentDragOverlappingLayout(layout); 2779 2780 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 2781 if (isInSpringLoadedMode) { 2782 if (mLauncher.isHotseatLayout(layout)) { 2783 mSpringLoadedDragController.cancel(); 2784 } else { 2785 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2786 } 2787 } 2788 } 2789 } else { 2790 // Test to see if we are over the hotseat otherwise just use the current page 2791 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 2792 mLauncher.getHotseat().getHitRect(r); 2793 if (r.contains(d.x, d.y)) { 2794 layout = mLauncher.getHotseat().getLayout(); 2795 } 2796 } 2797 if (layout == null) { 2798 layout = getCurrentDropLayout(); 2799 } 2800 if (layout != mDragTargetLayout) { 2801 setCurrentDropLayout(layout); 2802 setCurrentDragOverlappingLayout(layout); 2803 } 2804 } 2805 2806 // Handle the drag over 2807 if (mDragTargetLayout != null) { 2808 // We want the point to be mapped to the dragTarget. 2809 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2810 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2811 } else { 2812 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2813 } 2814 2815 ItemInfo info = (ItemInfo) d.dragInfo; 2816 2817 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2818 (int) mDragViewVisualCenter[1], item.spanX, item.spanY, 2819 mDragTargetLayout, mTargetCell); 2820 2821 setCurrentDropOverCell(mTargetCell[0], mTargetCell[1]); 2822 2823 float targetCellDistance = mDragTargetLayout.getDistanceFromCell( 2824 mDragViewVisualCenter[0], mDragViewVisualCenter[1], mTargetCell); 2825 2826 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2827 mTargetCell[1]); 2828 2829 manageFolderFeedback(info, mDragTargetLayout, mTargetCell, 2830 targetCellDistance, dragOverView); 2831 2832 int minSpanX = item.spanX; 2833 int minSpanY = item.spanY; 2834 if (item.minSpanX > 0 && item.minSpanY > 0) { 2835 minSpanX = item.minSpanX; 2836 minSpanY = item.minSpanY; 2837 } 2838 2839 boolean nearestDropOccupied = mDragTargetLayout.isNearestDropLocationOccupied((int) 2840 mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], item.spanX, 2841 item.spanY, child, mTargetCell); 2842 2843 if (!nearestDropOccupied) { 2844 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2845 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2846 mTargetCell[0], mTargetCell[1], item.spanX, item.spanY, false, 2847 d.dragView.getDragVisualizeOffset(), d.dragView.getDragRegion()); 2848 } else if ((mDragMode == DRAG_MODE_NONE || mDragMode == DRAG_MODE_REORDER) 2849 && !mReorderAlarm.alarmPending() && (mLastReorderX != mTargetCell[0] || 2850 mLastReorderY != mTargetCell[1])) { 2851 2852 // Otherwise, if we aren't adding to or creating a folder and there's no pending 2853 // reorder, then we schedule a reorder 2854 ReorderAlarmListener listener = new ReorderAlarmListener(mDragViewVisualCenter, 2855 minSpanX, minSpanY, item.spanX, item.spanY, d.dragView, child); 2856 mReorderAlarm.setOnAlarmListener(listener); 2857 mReorderAlarm.setAlarm(REORDER_TIMEOUT); 2858 } 2859 2860 if (mDragMode == DRAG_MODE_CREATE_FOLDER || mDragMode == DRAG_MODE_ADD_TO_FOLDER || 2861 !nearestDropOccupied) { 2862 if (mDragTargetLayout != null) { 2863 mDragTargetLayout.revertTempState(); 2864 } 2865 } 2866 } 2867 } 2868 2869 private void manageFolderFeedback(ItemInfo info, CellLayout targetLayout, 2870 int[] targetCell, float distance, View dragOverView) { 2871 boolean userFolderPending = willCreateUserFolder(info, targetLayout, targetCell, distance, 2872 false); 2873 2874 if (mDragMode == DRAG_MODE_NONE && userFolderPending && 2875 !mFolderCreationAlarm.alarmPending()) { 2876 mFolderCreationAlarm.setOnAlarmListener(new 2877 FolderCreationAlarmListener(targetLayout, targetCell[0], targetCell[1])); 2878 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2879 return; 2880 } 2881 2882 boolean willAddToFolder = 2883 willAddToExistingUserFolder(info, targetLayout, targetCell, distance); 2884 2885 if (willAddToFolder && mDragMode == DRAG_MODE_NONE) { 2886 mDragOverFolderIcon = ((FolderIcon) dragOverView); 2887 mDragOverFolderIcon.onDragEnter(info); 2888 if (targetLayout != null) { 2889 targetLayout.clearDragOutlines(); 2890 } 2891 setDragMode(DRAG_MODE_ADD_TO_FOLDER); 2892 return; 2893 } 2894 2895 if (mDragMode == DRAG_MODE_ADD_TO_FOLDER && !willAddToFolder) { 2896 setDragMode(DRAG_MODE_NONE); 2897 } 2898 if (mDragMode == DRAG_MODE_CREATE_FOLDER && !userFolderPending) { 2899 setDragMode(DRAG_MODE_NONE); 2900 } 2901 2902 return; 2903 } 2904 2905 class FolderCreationAlarmListener implements OnAlarmListener { 2906 CellLayout layout; 2907 int cellX; 2908 int cellY; 2909 2910 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 2911 this.layout = layout; 2912 this.cellX = cellX; 2913 this.cellY = cellY; 2914 } 2915 2916 public void onAlarm(Alarm alarm) { 2917 if (mDragFolderRingAnimator == null) { 2918 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 2919 } 2920 mDragFolderRingAnimator.setCell(cellX, cellY); 2921 mDragFolderRingAnimator.setCellLayout(layout); 2922 mDragFolderRingAnimator.animateToAcceptState(); 2923 layout.showFolderAccept(mDragFolderRingAnimator); 2924 layout.clearDragOutlines(); 2925 setDragMode(DRAG_MODE_CREATE_FOLDER); 2926 } 2927 } 2928 2929 class ReorderAlarmListener implements OnAlarmListener { 2930 float[] dragViewCenter; 2931 int minSpanX, minSpanY, spanX, spanY; 2932 DragView dragView; 2933 View child; 2934 2935 public ReorderAlarmListener(float[] dragViewCenter, int minSpanX, int minSpanY, int spanX, 2936 int spanY, DragView dragView, View child) { 2937 this.dragViewCenter = dragViewCenter; 2938 this.minSpanX = minSpanX; 2939 this.minSpanY = minSpanY; 2940 this.spanX = spanX; 2941 this.spanY = spanY; 2942 this.child = child; 2943 this.dragView = dragView; 2944 } 2945 2946 public void onAlarm(Alarm alarm) { 2947 int[] resultSpan = new int[2]; 2948 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2949 (int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell); 2950 mLastReorderX = mTargetCell[0]; 2951 mLastReorderY = mTargetCell[1]; 2952 2953 mTargetCell = mDragTargetLayout.createArea((int) mDragViewVisualCenter[0], 2954 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2955 child, mTargetCell, resultSpan, CellLayout.MODE_DRAG_OVER); 2956 2957 if (mTargetCell[0] < 0 || mTargetCell[1] < 0) { 2958 mDragTargetLayout.revertTempState(); 2959 } else { 2960 setDragMode(DRAG_MODE_REORDER); 2961 } 2962 2963 boolean resize = resultSpan[0] != spanX || resultSpan[1] != spanY; 2964 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2965 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2966 mTargetCell[0], mTargetCell[1], resultSpan[0], resultSpan[1], resize, 2967 dragView.getDragVisualizeOffset(), dragView.getDragRegion()); 2968 } 2969 } 2970 2971 @Override 2972 public void getHitRect(Rect outRect) { 2973 // We want the workspace to have the whole area of the display (it will find the correct 2974 // cell layout to drop to in the existing drag/drop logic. 2975 outRect.set(0, 0, mDisplaySize.x, mDisplaySize.y); 2976 } 2977 2978 /** 2979 * Add the item specified by dragInfo to the given layout. 2980 * @return true if successful 2981 */ 2982 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2983 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2984 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2985 return true; 2986 } 2987 mLauncher.showOutOfSpaceMessage(mLauncher.isHotseatLayout(layout)); 2988 return false; 2989 } 2990 2991 private void onDropExternal(int[] touchXY, Object dragInfo, 2992 CellLayout cellLayout, boolean insertAtFirst) { 2993 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 2994 } 2995 2996 /** 2997 * Drop an item that didn't originate on one of the workspace screens. 2998 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2999 * come from another app altogether. 3000 * 3001 * NOTE: This can also be called when we are outside of a drag event, when we want 3002 * to add an item to one of the workspace screens. 3003 */ 3004 private void onDropExternal(final int[] touchXY, final Object dragInfo, 3005 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 3006 final Runnable exitSpringLoadedRunnable = new Runnable() { 3007 @Override 3008 public void run() { 3009 mLauncher.exitSpringLoadedDragModeDelayed(true, false, null); 3010 } 3011 }; 3012 3013 ItemInfo info = (ItemInfo) dragInfo; 3014 int spanX = info.spanX; 3015 int spanY = info.spanY; 3016 if (mDragInfo != null) { 3017 spanX = mDragInfo.spanX; 3018 spanY = mDragInfo.spanY; 3019 } 3020 3021 final long container = mLauncher.isHotseatLayout(cellLayout) ? 3022 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 3023 LauncherSettings.Favorites.CONTAINER_DESKTOP; 3024 final int screen = indexOfChild(cellLayout); 3025 if (!mLauncher.isHotseatLayout(cellLayout) && screen != mCurrentPage 3026 && mState != State.SPRING_LOADED) { 3027 snapToPage(screen); 3028 } 3029 3030 if (info instanceof PendingAddItemInfo) { 3031 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 3032 3033 boolean findNearestVacantCell = true; 3034 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 3035 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3036 cellLayout, mTargetCell); 3037 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3038 mDragViewVisualCenter[1], mTargetCell); 3039 if (willCreateUserFolder((ItemInfo) d.dragInfo, cellLayout, mTargetCell, 3040 distance, true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 3041 cellLayout, mTargetCell, distance)) { 3042 findNearestVacantCell = false; 3043 } 3044 } 3045 3046 final ItemInfo item = (ItemInfo) d.dragInfo; 3047 boolean updateWidgetSize = false; 3048 if (findNearestVacantCell) { 3049 int minSpanX = item.spanX; 3050 int minSpanY = item.spanY; 3051 if (item.minSpanX > 0 && item.minSpanY > 0) { 3052 minSpanX = item.minSpanX; 3053 minSpanY = item.minSpanY; 3054 } 3055 int[] resultSpan = new int[2]; 3056 mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], 3057 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, info.spanX, info.spanY, 3058 null, mTargetCell, resultSpan, CellLayout.MODE_ON_DROP_EXTERNAL); 3059 3060 if (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY) { 3061 updateWidgetSize = true; 3062 } 3063 item.spanX = resultSpan[0]; 3064 item.spanY = resultSpan[1]; 3065 } 3066 3067 Runnable onAnimationCompleteRunnable = new Runnable() { 3068 @Override 3069 public void run() { 3070 // When dragging and dropping from customization tray, we deal with creating 3071 // widgets/shortcuts/folders in a slightly different way 3072 switch (pendingInfo.itemType) { 3073 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 3074 int span[] = new int[2]; 3075 span[0] = item.spanX; 3076 span[1] = item.spanY; 3077 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, 3078 container, screen, mTargetCell, span, null); 3079 break; 3080 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3081 mLauncher.processShortcutFromDrop(pendingInfo.componentName, 3082 container, screen, mTargetCell, null); 3083 break; 3084 default: 3085 throw new IllegalStateException("Unknown item type: " + 3086 pendingInfo.itemType); 3087 } 3088 } 3089 }; 3090 View finalView = pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET 3091 ? ((PendingAddWidgetInfo) pendingInfo).boundWidget : null; 3092 3093 if (finalView instanceof AppWidgetHostView && updateWidgetSize) { 3094 AppWidgetHostView awhv = (AppWidgetHostView) finalView; 3095 AppWidgetResizeFrame.updateWidgetSizeRanges(awhv, mLauncher, item.spanX, 3096 item.spanY); 3097 } 3098 3099 int animationStyle = ANIMATE_INTO_POSITION_AND_DISAPPEAR; 3100 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && 3101 ((PendingAddWidgetInfo) pendingInfo).info.configure != null) { 3102 animationStyle = ANIMATE_INTO_POSITION_AND_REMAIN; 3103 } 3104 animateWidgetDrop(info, cellLayout, d.dragView, onAnimationCompleteRunnable, 3105 animationStyle, finalView, true); 3106 } else { 3107 // This is for other drag/drop cases, like dragging from All Apps 3108 View view = null; 3109 3110 switch (info.itemType) { 3111 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 3112 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3113 if (info.container == NO_ID && info instanceof ApplicationInfo) { 3114 // Came from all apps -- make a copy 3115 info = new ShortcutInfo((ApplicationInfo) info); 3116 } 3117 view = mLauncher.createShortcut(R.layout.application, cellLayout, 3118 (ShortcutInfo) info); 3119 break; 3120 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 3121 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 3122 (FolderInfo) info, mIconCache); 3123 break; 3124 default: 3125 throw new IllegalStateException("Unknown item type: " + info.itemType); 3126 } 3127 3128 // First we find the cell nearest to point at which the item is 3129 // dropped, without any consideration to whether there is an item there. 3130 if (touchXY != null) { 3131 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3132 cellLayout, mTargetCell); 3133 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3134 mDragViewVisualCenter[1], mTargetCell); 3135 d.postAnimationRunnable = exitSpringLoadedRunnable; 3136 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, distance, 3137 true, d.dragView, d.postAnimationRunnable)) { 3138 return; 3139 } 3140 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, distance, d, 3141 true)) { 3142 return; 3143 } 3144 } 3145 3146 if (touchXY != null) { 3147 // when dragging and dropping, just find the closest free spot 3148 mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], 3149 (int) mDragViewVisualCenter[1], 1, 1, 1, 1, 3150 null, mTargetCell, null, CellLayout.MODE_ON_DROP_EXTERNAL); 3151 } else { 3152 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3153 } 3154 addInScreen(view, container, screen, mTargetCell[0], mTargetCell[1], info.spanX, 3155 info.spanY, insertAtFirst); 3156 cellLayout.onDropChild(view); 3157 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 3158 cellLayout.getShortcutsAndWidgets().measureChild(view); 3159 3160 3161 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, 3162 lp.cellX, lp.cellY); 3163 3164 if (d.dragView != null) { 3165 // We wrap the animation call in the temporary set and reset of the current 3166 // cellLayout to its final transform -- this means we animate the drag view to 3167 // the correct final location. 3168 setFinalTransitionTransform(cellLayout); 3169 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 3170 exitSpringLoadedRunnable); 3171 resetTransitionTransform(cellLayout); 3172 } 3173 } 3174 } 3175 3176 public Bitmap createWidgetBitmap(ItemInfo widgetInfo, View layout) { 3177 int[] unScaledSize = mLauncher.getWorkspace().estimateItemSize(widgetInfo.spanX, 3178 widgetInfo.spanY, widgetInfo, false); 3179 int visibility = layout.getVisibility(); 3180 layout.setVisibility(VISIBLE); 3181 3182 int width = MeasureSpec.makeMeasureSpec(unScaledSize[0], MeasureSpec.EXACTLY); 3183 int height = MeasureSpec.makeMeasureSpec(unScaledSize[1], MeasureSpec.EXACTLY); 3184 Bitmap b = Bitmap.createBitmap(unScaledSize[0], unScaledSize[1], 3185 Bitmap.Config.ARGB_8888); 3186 Canvas c = new Canvas(b); 3187 3188 layout.measure(width, height); 3189 layout.layout(0, 0, unScaledSize[0], unScaledSize[1]); 3190 layout.draw(c); 3191 c.setBitmap(null); 3192 layout.setVisibility(visibility); 3193 return b; 3194 } 3195 3196 private void getFinalPositionForDropAnimation(int[] loc, float[] scaleXY, 3197 DragView dragView, CellLayout layout, ItemInfo info, int[] targetCell, 3198 boolean external, boolean scale) { 3199 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 3200 // location and size on the home screen. 3201 int spanX = info.spanX; 3202 int spanY = info.spanY; 3203 3204 Rect r = estimateItemPosition(layout, info, targetCell[0], targetCell[1], spanX, spanY); 3205 loc[0] = r.left; 3206 loc[1] = r.top; 3207 3208 setFinalTransitionTransform(layout); 3209 float cellLayoutScale = 3210 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(layout, loc); 3211 resetTransitionTransform(layout); 3212 3213 float dragViewScaleX; 3214 float dragViewScaleY; 3215 if (scale) { 3216 dragViewScaleX = (1.0f * r.width()) / dragView.getMeasuredWidth(); 3217 dragViewScaleY = (1.0f * r.height()) / dragView.getMeasuredHeight(); 3218 } else { 3219 dragViewScaleX = 1f; 3220 dragViewScaleY = 1f; 3221 } 3222 3223 // The animation will scale the dragView about its center, so we need to center about 3224 // the final location. 3225 loc[0] -= (dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 3226 loc[1] -= (dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 3227 3228 scaleXY[0] = dragViewScaleX * cellLayoutScale; 3229 scaleXY[1] = dragViewScaleY * cellLayoutScale; 3230 } 3231 3232 public void animateWidgetDrop(ItemInfo info, CellLayout cellLayout, DragView dragView, 3233 final Runnable onCompleteRunnable, int animationType, final View finalView, 3234 boolean external) { 3235 Rect from = new Rect(); 3236 mLauncher.getDragLayer().getViewRectRelativeToSelf(dragView, from); 3237 3238 int[] finalPos = new int[2]; 3239 float scaleXY[] = new float[2]; 3240 boolean scalePreview = !(info instanceof PendingAddShortcutInfo); 3241 getFinalPositionForDropAnimation(finalPos, scaleXY, dragView, cellLayout, info, mTargetCell, 3242 external, scalePreview); 3243 3244 Resources res = mLauncher.getResources(); 3245 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration) - 200; 3246 3247 // In the case where we've prebound the widget, we remove it from the DragLayer 3248 if (finalView instanceof AppWidgetHostView && external) { 3249 Log.d(TAG, "6557954 Animate widget drop, final view is appWidgetHostView"); 3250 mLauncher.getDragLayer().removeView(finalView); 3251 } 3252 if ((animationType == ANIMATE_INTO_POSITION_AND_RESIZE || external) && finalView != null) { 3253 Bitmap crossFadeBitmap = createWidgetBitmap(info, finalView); 3254 dragView.setCrossFadeBitmap(crossFadeBitmap); 3255 dragView.crossFade((int) (duration * 0.8f)); 3256 } else if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && external) { 3257 scaleXY[0] = scaleXY[1] = Math.min(scaleXY[0], scaleXY[1]); 3258 } 3259 3260 DragLayer dragLayer = mLauncher.getDragLayer(); 3261 if (animationType == CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION) { 3262 mLauncher.getDragLayer().animateViewIntoPosition(dragView, finalPos, 0f, 0.1f, 0.1f, 3263 DragLayer.ANIMATION_END_DISAPPEAR, onCompleteRunnable, duration); 3264 } else { 3265 int endStyle; 3266 if (animationType == ANIMATE_INTO_POSITION_AND_REMAIN) { 3267 endStyle = DragLayer.ANIMATION_END_REMAIN_VISIBLE; 3268 } else { 3269 endStyle = DragLayer.ANIMATION_END_DISAPPEAR;; 3270 } 3271 3272 Runnable onComplete = new Runnable() { 3273 @Override 3274 public void run() { 3275 if (finalView != null) { 3276 finalView.setVisibility(VISIBLE); 3277 } 3278 if (onCompleteRunnable != null) { 3279 onCompleteRunnable.run(); 3280 } 3281 } 3282 }; 3283 dragLayer.animateViewIntoPosition(dragView, from.left, from.top, finalPos[0], 3284 finalPos[1], 1, 1, 1, scaleXY[0], scaleXY[1], onComplete, endStyle, 3285 duration, this); 3286 } 3287 } 3288 3289 public void setFinalTransitionTransform(CellLayout layout) { 3290 if (isSwitchingState()) { 3291 int index = indexOfChild(layout); 3292 mCurrentScaleX = layout.getScaleX(); 3293 mCurrentScaleY = layout.getScaleY(); 3294 mCurrentTranslationX = layout.getTranslationX(); 3295 mCurrentTranslationY = layout.getTranslationY(); 3296 mCurrentRotationY = layout.getRotationY(); 3297 layout.setScaleX(mNewScaleXs[index]); 3298 layout.setScaleY(mNewScaleYs[index]); 3299 layout.setTranslationX(mNewTranslationXs[index]); 3300 layout.setTranslationY(mNewTranslationYs[index]); 3301 layout.setRotationY(mNewRotationYs[index]); 3302 } 3303 } 3304 public void resetTransitionTransform(CellLayout layout) { 3305 if (isSwitchingState()) { 3306 mCurrentScaleX = layout.getScaleX(); 3307 mCurrentScaleY = layout.getScaleY(); 3308 mCurrentTranslationX = layout.getTranslationX(); 3309 mCurrentTranslationY = layout.getTranslationY(); 3310 mCurrentRotationY = layout.getRotationY(); 3311 layout.setScaleX(mCurrentScaleX); 3312 layout.setScaleY(mCurrentScaleY); 3313 layout.setTranslationX(mCurrentTranslationX); 3314 layout.setTranslationY(mCurrentTranslationY); 3315 layout.setRotationY(mCurrentRotationY); 3316 } 3317 } 3318 3319 /** 3320 * Return the current {@link CellLayout}, correctly picking the destination 3321 * screen while a scroll is in progress. 3322 */ 3323 public CellLayout getCurrentDropLayout() { 3324 return (CellLayout) getChildAt(getNextPage()); 3325 } 3326 3327 /** 3328 * Return the current CellInfo describing our current drag; this method exists 3329 * so that Launcher can sync this object with the correct info when the activity is created/ 3330 * destroyed 3331 * 3332 */ 3333 public CellLayout.CellInfo getDragInfo() { 3334 return mDragInfo; 3335 } 3336 3337 /** 3338 * Calculate the nearest cell where the given object would be dropped. 3339 * 3340 * pixelX and pixelY should be in the coordinate system of layout 3341 */ 3342 private int[] findNearestArea(int pixelX, int pixelY, 3343 int spanX, int spanY, CellLayout layout, int[] recycle) { 3344 return layout.findNearestArea( 3345 pixelX, pixelY, spanX, spanY, recycle); 3346 } 3347 3348 void setup(DragController dragController) { 3349 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3350 mDragController = dragController; 3351 3352 // hardware layers on children are enabled on startup, but should be disabled until 3353 // needed 3354 updateChildrenLayersEnabled(false); 3355 setWallpaperDimension(); 3356 } 3357 3358 /** 3359 * Called at the end of a drag which originated on the workspace. 3360 */ 3361 public void onDropCompleted(View target, DragObject d, boolean isFlingToDelete, 3362 boolean success) { 3363 if (success) { 3364 if (target != this) { 3365 if (mDragInfo != null) { 3366 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 3367 if (mDragInfo.cell instanceof DropTarget) { 3368 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 3369 } 3370 } 3371 } 3372 } else if (mDragInfo != null) { 3373 CellLayout cellLayout; 3374 if (mLauncher.isHotseatLayout(target)) { 3375 cellLayout = mLauncher.getHotseat().getLayout(); 3376 } else { 3377 cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3378 } 3379 cellLayout.onDropChild(mDragInfo.cell); 3380 } 3381 if (d.cancelled && mDragInfo.cell != null) { 3382 mDragInfo.cell.setVisibility(VISIBLE); 3383 } 3384 mDragOutline = null; 3385 mDragInfo = null; 3386 3387 // Hide the scrolling indicator after you pick up an item 3388 hideScrollingIndicator(false); 3389 } 3390 3391 void updateItemLocationsInDatabase(CellLayout cl) { 3392 int count = cl.getShortcutsAndWidgets().getChildCount(); 3393 3394 int screen = indexOfChild(cl); 3395 int container = Favorites.CONTAINER_DESKTOP; 3396 3397 if (mLauncher.isHotseatLayout(cl)) { 3398 screen = -1; 3399 container = Favorites.CONTAINER_HOTSEAT; 3400 } 3401 3402 for (int i = 0; i < count; i++) { 3403 View v = cl.getShortcutsAndWidgets().getChildAt(i); 3404 ItemInfo info = (ItemInfo) v.getTag(); 3405 // Null check required as the AllApps button doesn't have an item info 3406 if (info != null && info.requiresDbUpdate) { 3407 info.requiresDbUpdate = false; 3408 LauncherModel.modifyItemInDatabase(mLauncher, info, container, screen, info.cellX, 3409 info.cellY, info.spanX, info.spanY); 3410 } 3411 } 3412 } 3413 3414 @Override 3415 public boolean supportsFlingToDelete() { 3416 return true; 3417 } 3418 3419 @Override 3420 public void onFlingToDelete(DragObject d, int x, int y, PointF vec) { 3421 // Do nothing 3422 } 3423 3424 @Override 3425 public void onFlingToDeleteCompleted() { 3426 // Do nothing 3427 } 3428 3429 public boolean isDropEnabled() { 3430 return true; 3431 } 3432 3433 @Override 3434 protected void onRestoreInstanceState(Parcelable state) { 3435 super.onRestoreInstanceState(state); 3436 Launcher.setScreen(mCurrentPage); 3437 } 3438 3439 @Override 3440 protected void dispatchRestoreInstanceState(SparseArray<Parcelable> container) { 3441 // We don't dispatch restoreInstanceState to our children using this code path. 3442 // Some pages will be restored immediately as their items are bound immediately, and 3443 // others we will need to wait until after their items are bound. 3444 mSavedStates = container; 3445 } 3446 3447 public void restoreInstanceStateForChild(int child) { 3448 if (mSavedStates != null) { 3449 mRestoredPages.add(child); 3450 CellLayout cl = (CellLayout) getChildAt(child); 3451 cl.restoreInstanceState(mSavedStates); 3452 } 3453 } 3454 3455 public void restoreInstanceStateForRemainingPages() { 3456 int count = getChildCount(); 3457 for (int i = 0; i < count; i++) { 3458 if (!mRestoredPages.contains(i)) { 3459 restoreInstanceStateForChild(i); 3460 } 3461 } 3462 mRestoredPages.clear(); 3463 } 3464 3465 @Override 3466 public void scrollLeft() { 3467 if (!isSmall() && !mIsSwitchingState) { 3468 super.scrollLeft(); 3469 } 3470 Folder openFolder = getOpenFolder(); 3471 if (openFolder != null) { 3472 openFolder.completeDragExit(); 3473 } 3474 } 3475 3476 @Override 3477 public void scrollRight() { 3478 if (!isSmall() && !mIsSwitchingState) { 3479 super.scrollRight(); 3480 } 3481 Folder openFolder = getOpenFolder(); 3482 if (openFolder != null) { 3483 openFolder.completeDragExit(); 3484 } 3485 } 3486 3487 @Override 3488 public boolean onEnterScrollArea(int x, int y, int direction) { 3489 // Ignore the scroll area if we are dragging over the hot seat 3490 boolean isPortrait = !LauncherApplication.isScreenLandscape(getContext()); 3491 if (mLauncher.getHotseat() != null && isPortrait) { 3492 Rect r = new Rect(); 3493 mLauncher.getHotseat().getHitRect(r); 3494 if (r.contains(x, y)) { 3495 return false; 3496 } 3497 } 3498 3499 boolean result = false; 3500 if (!isSmall() && !mIsSwitchingState) { 3501 mInScrollArea = true; 3502 3503 final int page = getNextPage() + 3504 (direction == DragController.SCROLL_LEFT ? -1 : 1); 3505 3506 // We always want to exit the current layout to ensure parity of enter / exit 3507 setCurrentDropLayout(null); 3508 3509 if (0 <= page && page < getChildCount()) { 3510 CellLayout layout = (CellLayout) getChildAt(page); 3511 setCurrentDragOverlappingLayout(layout); 3512 3513 // Workspace is responsible for drawing the edge glow on adjacent pages, 3514 // so we need to redraw the workspace when this may have changed. 3515 invalidate(); 3516 result = true; 3517 } 3518 } 3519 return result; 3520 } 3521 3522 @Override 3523 public boolean onExitScrollArea() { 3524 boolean result = false; 3525 if (mInScrollArea) { 3526 invalidate(); 3527 CellLayout layout = getCurrentDropLayout(); 3528 setCurrentDropLayout(layout); 3529 setCurrentDragOverlappingLayout(layout); 3530 3531 result = true; 3532 mInScrollArea = false; 3533 } 3534 return result; 3535 } 3536 3537 private void onResetScrollArea() { 3538 setCurrentDragOverlappingLayout(null); 3539 mInScrollArea = false; 3540 } 3541 3542 /** 3543 * Returns a specific CellLayout 3544 */ 3545 CellLayout getParentCellLayoutForView(View v) { 3546 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3547 for (CellLayout layout : layouts) { 3548 if (layout.getShortcutsAndWidgets().indexOfChild(v) > -1) { 3549 return layout; 3550 } 3551 } 3552 return null; 3553 } 3554 3555 /** 3556 * Returns a list of all the CellLayouts in the workspace. 3557 */ 3558 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3559 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3560 int screenCount = getChildCount(); 3561 for (int screen = 0; screen < screenCount; screen++) { 3562 layouts.add(((CellLayout) getChildAt(screen))); 3563 } 3564 if (mLauncher.getHotseat() != null) { 3565 layouts.add(mLauncher.getHotseat().getLayout()); 3566 } 3567 return layouts; 3568 } 3569 3570 /** 3571 * We should only use this to search for specific children. Do not use this method to modify 3572 * ShortcutsAndWidgetsContainer directly. Includes ShortcutAndWidgetContainers from 3573 * the hotseat and workspace pages 3574 */ 3575 ArrayList<ShortcutAndWidgetContainer> getAllShortcutAndWidgetContainers() { 3576 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3577 new ArrayList<ShortcutAndWidgetContainer>(); 3578 int screenCount = getChildCount(); 3579 for (int screen = 0; screen < screenCount; screen++) { 3580 childrenLayouts.add(((CellLayout) getChildAt(screen)).getShortcutsAndWidgets()); 3581 } 3582 if (mLauncher.getHotseat() != null) { 3583 childrenLayouts.add(mLauncher.getHotseat().getLayout().getShortcutsAndWidgets()); 3584 } 3585 return childrenLayouts; 3586 } 3587 3588 public Folder getFolderForTag(Object tag) { 3589 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3590 getAllShortcutAndWidgetContainers(); 3591 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3592 int count = layout.getChildCount(); 3593 for (int i = 0; i < count; i++) { 3594 View child = layout.getChildAt(i); 3595 if (child instanceof Folder) { 3596 Folder f = (Folder) child; 3597 if (f.getInfo() == tag && f.getInfo().opened) { 3598 return f; 3599 } 3600 } 3601 } 3602 } 3603 return null; 3604 } 3605 3606 public View getViewForTag(Object tag) { 3607 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3608 getAllShortcutAndWidgetContainers(); 3609 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3610 int count = layout.getChildCount(); 3611 for (int i = 0; i < count; i++) { 3612 View child = layout.getChildAt(i); 3613 if (child.getTag() == tag) { 3614 return child; 3615 } 3616 } 3617 } 3618 return null; 3619 } 3620 3621 void clearDropTargets() { 3622 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3623 getAllShortcutAndWidgetContainers(); 3624 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3625 int childCount = layout.getChildCount(); 3626 for (int j = 0; j < childCount; j++) { 3627 View v = layout.getChildAt(j); 3628 if (v instanceof DropTarget) { 3629 mDragController.removeDropTarget((DropTarget) v); 3630 } 3631 } 3632 } 3633 } 3634 3635 void removeItems(final ArrayList<String> packages) { 3636 final HashSet<String> packageNames = new HashSet<String>(); 3637 packageNames.addAll(packages); 3638 3639 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3640 for (final CellLayout layoutParent: cellLayouts) { 3641 final ViewGroup layout = layoutParent.getShortcutsAndWidgets(); 3642 3643 // Avoid ANRs by treating each screen separately 3644 post(new Runnable() { 3645 public void run() { 3646 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3647 childrenToRemove.clear(); 3648 3649 int childCount = layout.getChildCount(); 3650 for (int j = 0; j < childCount; j++) { 3651 final View view = layout.getChildAt(j); 3652 Object tag = view.getTag(); 3653 3654 if (tag instanceof ShortcutInfo) { 3655 final ShortcutInfo info = (ShortcutInfo) tag; 3656 final Intent intent = info.intent; 3657 final ComponentName name = intent.getComponent(); 3658 3659 if (name != null) { 3660 if (packageNames.contains(name.getPackageName())) { 3661 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3662 childrenToRemove.add(view); 3663 } 3664 } 3665 } else if (tag instanceof FolderInfo) { 3666 final FolderInfo info = (FolderInfo) tag; 3667 final ArrayList<ShortcutInfo> contents = info.contents; 3668 final int contentsCount = contents.size(); 3669 final ArrayList<ShortcutInfo> appsToRemoveFromFolder = 3670 new ArrayList<ShortcutInfo>(); 3671 3672 for (int k = 0; k < contentsCount; k++) { 3673 final ShortcutInfo appInfo = contents.get(k); 3674 final Intent intent = appInfo.intent; 3675 final ComponentName name = intent.getComponent(); 3676 3677 if (name != null) { 3678 if (packageNames.contains(name.getPackageName())) { 3679 appsToRemoveFromFolder.add(appInfo); 3680 } 3681 } 3682 } 3683 for (ShortcutInfo item: appsToRemoveFromFolder) { 3684 info.remove(item); 3685 LauncherModel.deleteItemFromDatabase(mLauncher, item); 3686 } 3687 } else if (tag instanceof LauncherAppWidgetInfo) { 3688 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3689 final ComponentName provider = info.providerName; 3690 if (provider != null) { 3691 if (packageNames.contains(provider.getPackageName())) { 3692 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3693 childrenToRemove.add(view); 3694 } 3695 } 3696 } 3697 } 3698 3699 childCount = childrenToRemove.size(); 3700 for (int j = 0; j < childCount; j++) { 3701 View child = childrenToRemove.get(j); 3702 // Note: We can not remove the view directly from CellLayoutChildren as this 3703 // does not re-mark the spaces as unoccupied. 3704 layoutParent.removeViewInLayout(child); 3705 if (child instanceof DropTarget) { 3706 mDragController.removeDropTarget((DropTarget)child); 3707 } 3708 } 3709 3710 if (childCount > 0) { 3711 layout.requestLayout(); 3712 layout.invalidate(); 3713 } 3714 } 3715 }); 3716 } 3717 3718 // Clean up new-apps animation list 3719 final Context context = getContext(); 3720 post(new Runnable() { 3721 @Override 3722 public void run() { 3723 String spKey = LauncherApplication.getSharedPreferencesKey(); 3724 SharedPreferences sp = context.getSharedPreferences(spKey, 3725 Context.MODE_PRIVATE); 3726 Set<String> newApps = sp.getStringSet(InstallShortcutReceiver.NEW_APPS_LIST_KEY, 3727 null); 3728 3729 // Remove all queued items that match the same package 3730 if (newApps != null) { 3731 synchronized (newApps) { 3732 Iterator<String> iter = newApps.iterator(); 3733 while (iter.hasNext()) { 3734 try { 3735 Intent intent = Intent.parseUri(iter.next(), 0); 3736 String pn = ItemInfo.getPackageName(intent); 3737 if (packageNames.contains(pn)) { 3738 iter.remove(); 3739 } 3740 3741 // It is possible that we've queued an item to be loaded, yet it has 3742 // not been added to the workspace, so remove those items as well. 3743 ArrayList<ItemInfo> shortcuts; 3744 shortcuts = LauncherModel.getWorkspaceShortcutItemInfosWithIntent( 3745 intent); 3746 for (ItemInfo info : shortcuts) { 3747 LauncherModel.deleteItemFromDatabase(context, info); 3748 } 3749 } catch (URISyntaxException e) {} 3750 } 3751 } 3752 } 3753 } 3754 }); 3755 } 3756 3757 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3758 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = getAllShortcutAndWidgetContainers(); 3759 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3760 int childCount = layout.getChildCount(); 3761 for (int j = 0; j < childCount; j++) { 3762 final View view = layout.getChildAt(j); 3763 Object tag = view.getTag(); 3764 if (tag instanceof ShortcutInfo) { 3765 ShortcutInfo info = (ShortcutInfo) tag; 3766 // We need to check for ACTION_MAIN otherwise getComponent() might 3767 // return null for some shortcuts (for instance, for shortcuts to 3768 // web pages.) 3769 final Intent intent = info.intent; 3770 final ComponentName name = intent.getComponent(); 3771 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3772 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3773 final int appCount = apps.size(); 3774 for (int k = 0; k < appCount; k++) { 3775 ApplicationInfo app = apps.get(k); 3776 if (app.componentName.equals(name)) { 3777 BubbleTextView shortcut = (BubbleTextView) view; 3778 info.updateIcon(mIconCache); 3779 info.title = app.title.toString(); 3780 shortcut.applyFromShortcutInfo(info, mIconCache); 3781 } 3782 } 3783 } 3784 } 3785 } 3786 } 3787 } 3788 3789 void moveToDefaultScreen(boolean animate) { 3790 if (!isSmall()) { 3791 if (animate) { 3792 snapToPage(mDefaultPage); 3793 } else { 3794 setCurrentPage(mDefaultPage); 3795 } 3796 } 3797 getChildAt(mDefaultPage).requestFocus(); 3798 } 3799 3800 @Override 3801 public void syncPages() { 3802 } 3803 3804 @Override 3805 public void syncPageItems(int page, boolean immediate) { 3806 } 3807 3808 @Override 3809 protected String getCurrentPageDescription() { 3810 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 3811 return String.format(getContext().getString(R.string.workspace_scroll_format), 3812 page + 1, getChildCount()); 3813 } 3814 3815 public void getLocationInDragLayer(int[] loc) { 3816 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 3817 } 3818 3819 void setFadeForOverScroll(float fade) { 3820 if (!isScrollingIndicatorEnabled()) return; 3821 3822 mOverscrollFade = fade; 3823 float reducedFade = 0.5f + 0.5f * (1 - fade); 3824 final ViewGroup parent = (ViewGroup) getParent(); 3825 final ImageView qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3826 final ImageView dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3827 final View scrollIndicator = getScrollingIndicator(); 3828 3829 cancelScrollingIndicatorAnimations(); 3830 if (qsbDivider != null) qsbDivider.setAlpha(reducedFade); 3831 if (dockDivider != null) dockDivider.setAlpha(reducedFade); 3832 scrollIndicator.setAlpha(1 - fade); 3833 } 3834} 3835