Workspace.java revision cc8befac3550c81d04ea206c170adae36c9a6c93
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.launcher3; 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.launcher3.R; 56import com.android.launcher3.FolderIcon.FolderRingAnimator; 57import com.android.launcher3.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 98 private float mWallpaperScrollRatio = 1.0f; 99 private int mOriginalPageSpacing; 100 101 private final WallpaperManager mWallpaperManager; 102 private IBinder mWindowToken; 103 private static final float WALLPAPER_SCREENS_SPAN = 2f; 104 105 private int mDefaultPage; 106 107 /** 108 * CellInfo for the cell that is currently being dragged 109 */ 110 private CellLayout.CellInfo mDragInfo; 111 112 /** 113 * Target drop area calculated during last acceptDrop call. 114 */ 115 private int[] mTargetCell = new int[2]; 116 private int mDragOverX = -1; 117 private int mDragOverY = -1; 118 119 static Rect mLandscapeCellLayoutMetrics = null; 120 static Rect mPortraitCellLayoutMetrics = null; 121 122 /** 123 * The CellLayout that is currently being dragged over 124 */ 125 private CellLayout mDragTargetLayout = null; 126 /** 127 * The CellLayout that we will show as glowing 128 */ 129 private CellLayout mDragOverlappingLayout = null; 130 131 /** 132 * The CellLayout which will be dropped to 133 */ 134 private CellLayout mDropToLayout = null; 135 136 private Launcher mLauncher; 137 private IconCache mIconCache; 138 private DragController mDragController; 139 140 // These are temporary variables to prevent having to allocate a new object just to 141 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 142 private int[] mTempCell = new int[2]; 143 private int[] mTempEstimate = new int[2]; 144 private float[] mDragViewVisualCenter = new float[2]; 145 private float[] mTempDragCoordinates = new float[2]; 146 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 147 private float[] mTempDragBottomRightCoordinates = new float[2]; 148 private Matrix mTempInverseMatrix = new Matrix(); 149 150 private SpringLoadedDragController mSpringLoadedDragController; 151 private float mSpringLoadedShrinkFactor; 152 153 private static final int DEFAULT_CELL_COUNT_X = 4; 154 private static final int DEFAULT_CELL_COUNT_Y = 4; 155 156 // State variable that indicates whether the pages are small (ie when you're 157 // in all apps or customize mode) 158 159 enum State { NORMAL, SPRING_LOADED, SMALL }; 160 private State mState = State.NORMAL; 161 private boolean mIsSwitchingState = false; 162 163 boolean mAnimatingViewIntoPlace = false; 164 boolean mIsDragOccuring = false; 165 boolean mChildrenLayersEnabled = true; 166 167 /** Is the user is dragging an item near the edge of a page? */ 168 private boolean mInScrollArea = false; 169 170 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 171 private Bitmap mDragOutline = null; 172 private final Rect mTempRect = new Rect(); 173 private final int[] mTempXY = new int[2]; 174 private int[] mTempVisiblePagesRange = new int[2]; 175 private float mOverscrollFade = 0; 176 private boolean mOverscrollTransformsSet; 177 public static final int DRAG_BITMAP_PADDING = 2; 178 private boolean mWorkspaceFadeInAdjacentScreens; 179 180 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 181 int mWallpaperWidth; 182 int mWallpaperHeight; 183 WallpaperOffsetInterpolator mWallpaperOffset; 184 boolean mUpdateWallpaperOffsetImmediately = false; 185 private Runnable mDelayedResizeRunnable; 186 private Runnable mDelayedSnapToPageRunnable; 187 private Point mDisplaySize = new Point(); 188 private boolean mIsStaticWallpaper; 189 private int mWallpaperTravelWidth; 190 private int mSpringLoadedPageSpacing; 191 private int mCameraDistance; 192 193 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 194 private static final int FOLDER_CREATION_TIMEOUT = 0; 195 private static final int REORDER_TIMEOUT = 250; 196 private final Alarm mFolderCreationAlarm = new Alarm(); 197 private final Alarm mReorderAlarm = new Alarm(); 198 private FolderRingAnimator mDragFolderRingAnimator = null; 199 private FolderIcon mDragOverFolderIcon = null; 200 private boolean mCreateUserFolderOnDrop = false; 201 private boolean mAddToExistingFolderOnDrop = false; 202 private DropTarget.DragEnforcer mDragEnforcer; 203 private float mMaxDistanceForFolderCreation; 204 205 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 206 private float mXDown; 207 private float mYDown; 208 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 209 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 210 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 211 212 // Relating to the animation of items being dropped externally 213 public static final int ANIMATE_INTO_POSITION_AND_DISAPPEAR = 0; 214 public static final int ANIMATE_INTO_POSITION_AND_REMAIN = 1; 215 public static final int ANIMATE_INTO_POSITION_AND_RESIZE = 2; 216 public static final int COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION = 3; 217 public static final int CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION = 4; 218 219 // Related to dragging, folder creation and reordering 220 private static final int DRAG_MODE_NONE = 0; 221 private static final int DRAG_MODE_CREATE_FOLDER = 1; 222 private static final int DRAG_MODE_ADD_TO_FOLDER = 2; 223 private static final int DRAG_MODE_REORDER = 3; 224 private int mDragMode = DRAG_MODE_NONE; 225 private int mLastReorderX = -1; 226 private int mLastReorderY = -1; 227 228 private SparseArray<Parcelable> mSavedStates; 229 private final ArrayList<Integer> mRestoredPages = new ArrayList<Integer>(); 230 231 // These variables are used for storing the initial and final values during workspace animations 232 private int mSavedScrollX; 233 private float mSavedRotationY; 234 private float mSavedTranslationX; 235 private float mCurrentScaleX; 236 private float mCurrentScaleY; 237 private float mCurrentRotationY; 238 private float mCurrentTranslationX; 239 private float mCurrentTranslationY; 240 private float[] mOldTranslationXs; 241 private float[] mOldTranslationYs; 242 private float[] mOldScaleXs; 243 private float[] mOldScaleYs; 244 private float[] mOldBackgroundAlphas; 245 private float[] mOldAlphas; 246 private float[] mNewTranslationXs; 247 private float[] mNewTranslationYs; 248 private float[] mNewScaleXs; 249 private float[] mNewScaleYs; 250 private float[] mNewBackgroundAlphas; 251 private float[] mNewAlphas; 252 private float[] mNewRotationYs; 253 private float mTransitionProgress; 254 255 private final Runnable mBindPages = new Runnable() { 256 @Override 257 public void run() { 258 mLauncher.getModel().bindRemainingSynchronousPages(); 259 } 260 }; 261 262 /** 263 * Used to inflate the Workspace from XML. 264 * 265 * @param context The application's context. 266 * @param attrs The attributes set containing the Workspace's customization values. 267 */ 268 public Workspace(Context context, AttributeSet attrs) { 269 this(context, attrs, 0); 270 } 271 272 /** 273 * Used to inflate the Workspace from XML. 274 * 275 * @param context The application's context. 276 * @param attrs The attributes set containing the Workspace's customization values. 277 * @param defStyle Unused. 278 */ 279 public Workspace(Context context, AttributeSet attrs, int defStyle) { 280 super(context, attrs, defStyle); 281 mContentIsRefreshable = false; 282 mOriginalPageSpacing = mPageSpacing; 283 284 mDragEnforcer = new DropTarget.DragEnforcer(context); 285 // With workspace, data is available straight from the get-go 286 setDataIsReady(); 287 288 mLauncher = (Launcher) context; 289 final Resources res = getResources(); 290 mWorkspaceFadeInAdjacentScreens = res.getBoolean(R.bool.config_workspaceFadeAdjacentScreens); 291 mFadeInAdjacentScreens = false; 292 mWallpaperManager = WallpaperManager.getInstance(context); 293 294 int cellCountX = DEFAULT_CELL_COUNT_X; 295 int cellCountY = DEFAULT_CELL_COUNT_Y; 296 297 TypedArray a = context.obtainStyledAttributes(attrs, 298 R.styleable.Workspace, defStyle, 0); 299 300 if (LauncherAppState.isScreenLarge()) { 301 // Determine number of rows/columns dynamically 302 // TODO: This code currently fails on tablets with an aspect ratio < 1.3. 303 // Around that ratio we should make cells the same size in portrait and 304 // landscape 305 TypedArray actionBarSizeTypedArray = 306 context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize }); 307 final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); 308 309 Point minDims = new Point(); 310 Point maxDims = new Point(); 311 mLauncher.getWindowManager().getDefaultDisplay().getCurrentSizeRange(minDims, maxDims); 312 313 cellCountX = 1; 314 while (CellLayout.widthInPortrait(res, cellCountX + 1) <= minDims.x) { 315 cellCountX++; 316 } 317 318 cellCountY = 1; 319 while (actionBarHeight + CellLayout.heightInLandscape(res, cellCountY + 1) 320 <= minDims.y) { 321 cellCountY++; 322 } 323 } 324 325 mSpringLoadedShrinkFactor = 326 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 327 mSpringLoadedPageSpacing = 328 res.getDimensionPixelSize(R.dimen.workspace_spring_loaded_page_spacing); 329 mCameraDistance = res.getInteger(R.integer.config_cameraDistance); 330 331 // if the value is manually specified, use that instead 332 cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX); 333 cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY); 334 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 335 a.recycle(); 336 337 setOnHierarchyChangeListener(this); 338 339 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 340 setHapticFeedbackEnabled(false); 341 342 initWorkspace(); 343 344 // Disable multitouch across the workspace/all apps/customize tray 345 setMotionEventSplittingEnabled(true); 346 347 // Unless otherwise specified this view is important for accessibility. 348 if (getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 349 setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 350 } 351 } 352 353 // estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each 354 // dimension if unsuccessful 355 public int[] estimateItemSize(int hSpan, int vSpan, 356 ItemInfo itemInfo, boolean springLoaded) { 357 int[] size = new int[2]; 358 if (getChildCount() > 0) { 359 CellLayout cl = (CellLayout) mLauncher.getWorkspace().getChildAt(0); 360 Rect r = estimateItemPosition(cl, itemInfo, 0, 0, hSpan, vSpan); 361 size[0] = r.width(); 362 size[1] = r.height(); 363 if (springLoaded) { 364 size[0] *= mSpringLoadedShrinkFactor; 365 size[1] *= mSpringLoadedShrinkFactor; 366 } 367 return size; 368 } else { 369 size[0] = Integer.MAX_VALUE; 370 size[1] = Integer.MAX_VALUE; 371 return size; 372 } 373 } 374 public Rect estimateItemPosition(CellLayout cl, ItemInfo pendingInfo, 375 int hCell, int vCell, int hSpan, int vSpan) { 376 Rect r = new Rect(); 377 cl.cellToRect(hCell, vCell, hSpan, vSpan, r); 378 return r; 379 } 380 381 public void onDragStart(DragSource source, Object info, int dragAction) { 382 mIsDragOccuring = true; 383 updateChildrenLayersEnabled(false); 384 mLauncher.lockScreenOrientation(); 385 setChildrenBackgroundAlphaMultipliers(1f); 386 // Prevent any Un/InstallShortcutReceivers from updating the db while we are dragging 387 InstallShortcutReceiver.enableInstallQueue(); 388 UninstallShortcutReceiver.enableUninstallQueue(); 389 } 390 391 public void onDragEnd() { 392 mIsDragOccuring = false; 393 updateChildrenLayersEnabled(false); 394 mLauncher.unlockScreenOrientation(false); 395 396 // Re-enable any Un/InstallShortcutReceiver and now process any queued items 397 InstallShortcutReceiver.disableAndFlushInstallQueue(getContext()); 398 UninstallShortcutReceiver.disableAndFlushUninstallQueue(getContext()); 399 } 400 401 /** 402 * Initializes various states for this workspace. 403 */ 404 protected void initWorkspace() { 405 Context context = getContext(); 406 mCurrentPage = mDefaultPage; 407 Launcher.setScreen(mCurrentPage); 408 LauncherAppState app = LauncherAppState.getInstance(); 409 mIconCache = app.getIconCache(); 410 setWillNotDraw(false); 411 setClipChildren(false); 412 setClipToPadding(false); 413 setChildrenDrawnWithCacheEnabled(true); 414 415 final Resources res = getResources(); 416 try { 417 mBackground = res.getDrawable(R.drawable.apps_customize_bg); 418 } catch (Resources.NotFoundException e) { 419 // In this case, we will skip drawing background protection 420 } 421 422 mWallpaperOffset = new WallpaperOffsetInterpolator(); 423 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 424 display.getSize(mDisplaySize); 425 mWallpaperTravelWidth = (int) (mDisplaySize.x * 426 wallpaperTravelToScreenWidthRatio(mDisplaySize.x, mDisplaySize.y)); 427 428 mMaxDistanceForFolderCreation = (0.55f * res.getDimensionPixelSize(R.dimen.app_icon_size)); 429 mFlingThresholdVelocity = (int) (FLING_THRESHOLD_VELOCITY * mDensity); 430 } 431 432 @Override 433 protected int getScrollMode() { 434 return SmoothPagedView.X_LARGE_MODE; 435 } 436 437 @Override 438 public void onChildViewAdded(View parent, View child) { 439 if (!(child instanceof CellLayout)) { 440 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 441 } 442 CellLayout cl = ((CellLayout) child); 443 cl.setOnInterceptTouchListener(this); 444 cl.setClickable(true); 445 cl.setContentDescription(getContext().getString( 446 R.string.workspace_description_format, getChildCount())); 447 } 448 449 @Override 450 public void onChildViewRemoved(View parent, View child) { 451 } 452 453 protected boolean shouldDrawChild(View child) { 454 final CellLayout cl = (CellLayout) child; 455 return super.shouldDrawChild(child) && 456 (cl.getShortcutsAndWidgets().getAlpha() > 0 || 457 cl.getBackgroundAlpha() > 0); 458 } 459 460 /** 461 * @return The open folder on the current screen, or null if there is none 462 */ 463 Folder getOpenFolder() { 464 DragLayer dragLayer = mLauncher.getDragLayer(); 465 int count = dragLayer.getChildCount(); 466 for (int i = 0; i < count; i++) { 467 View child = dragLayer.getChildAt(i); 468 if (child instanceof Folder) { 469 Folder folder = (Folder) child; 470 if (folder.getInfo().opened) 471 return folder; 472 } 473 } 474 return null; 475 } 476 477 boolean isTouchActive() { 478 return mTouchState != TOUCH_STATE_REST; 479 } 480 481 /** 482 * Adds the specified child in the specified screen. The position and dimension of 483 * the child are defined by x, y, spanX and spanY. 484 * 485 * @param child The child to add in one of the workspace's screens. 486 * @param screen The screen in which to add the child. 487 * @param x The X position of the child in the screen's grid. 488 * @param y The Y position of the child in the screen's grid. 489 * @param spanX The number of cells spanned horizontally by the child. 490 * @param spanY The number of cells spanned vertically by the child. 491 */ 492 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY) { 493 addInScreen(child, container, screen, x, y, spanX, spanY, false); 494 } 495 496 /** 497 * Adds the specified child in the specified screen. The position and dimension of 498 * the child are defined by x, y, spanX and spanY. 499 * 500 * @param child The child to add in one of the workspace's screens. 501 * @param screen The screen in which to add the child. 502 * @param x The X position of the child in the screen's grid. 503 * @param y The Y position of the child in the screen's grid. 504 * @param spanX The number of cells spanned horizontally by the child. 505 * @param spanY The number of cells spanned vertically by the child. 506 * @param insert When true, the child is inserted at the beginning of the children list. 507 */ 508 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY, 509 boolean insert) { 510 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 511 if (screen < 0 || screen >= getChildCount()) { 512 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 513 + " (was " + screen + "); skipping child"); 514 return; 515 } 516 } 517 518 final CellLayout layout; 519 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 520 layout = mLauncher.getHotseat().getLayout(); 521 child.setOnKeyListener(null); 522 523 // Hide folder title in the hotseat 524 if (child instanceof FolderIcon) { 525 ((FolderIcon) child).setTextVisible(false); 526 } 527 528 if (screen < 0) { 529 screen = mLauncher.getHotseat().getOrderInHotseat(x, y); 530 } else { 531 // Note: We do this to ensure that the hotseat is always laid out in the orientation 532 // of the hotseat in order regardless of which orientation they were added 533 x = mLauncher.getHotseat().getCellXFromOrder(screen); 534 y = mLauncher.getHotseat().getCellYFromOrder(screen); 535 } 536 } else { 537 // Show folder title if not in the hotseat 538 if (child instanceof FolderIcon) { 539 ((FolderIcon) child).setTextVisible(true); 540 } 541 542 layout = (CellLayout) getChildAt(screen); 543 child.setOnKeyListener(new IconKeyEventListener()); 544 } 545 546 LayoutParams genericLp = child.getLayoutParams(); 547 CellLayout.LayoutParams lp; 548 if (genericLp == null || !(genericLp instanceof CellLayout.LayoutParams)) { 549 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 550 } else { 551 lp = (CellLayout.LayoutParams) genericLp; 552 lp.cellX = x; 553 lp.cellY = y; 554 lp.cellHSpan = spanX; 555 lp.cellVSpan = spanY; 556 } 557 558 if (spanX < 0 && spanY < 0) { 559 lp.isLockedToGrid = false; 560 } 561 562 // Get the canonical child id to uniquely represent this view in this screen 563 int childId = LauncherModel.getCellLayoutChildId(container, screen, x, y, spanX, spanY); 564 boolean markCellsAsOccupied = !(child instanceof Folder); 565 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 566 // TODO: This branch occurs when the workspace is adding views 567 // outside of the defined grid 568 // maybe we should be deleting these items from the LauncherModel? 569 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 570 } 571 572 if (!(child instanceof Folder)) { 573 child.setHapticFeedbackEnabled(false); 574 child.setOnLongClickListener(mLongClickListener); 575 } 576 if (child instanceof DropTarget) { 577 mDragController.addDropTarget((DropTarget) child); 578 } 579 } 580 581 /** 582 * Check if the point (x, y) hits a given page. 583 */ 584 private boolean hitsPage(int index, float x, float y) { 585 final View page = getChildAt(index); 586 if (page != null) { 587 float[] localXY = { x, y }; 588 mapPointFromSelfToChild(page, localXY); 589 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 590 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 591 } 592 return false; 593 } 594 595 @Override 596 protected boolean hitsPreviousPage(float x, float y) { 597 // mNextPage is set to INVALID_PAGE whenever we are stationary. 598 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 599 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 600 601 // Only allow tap to next page on large devices, where there's significant margin outside 602 // the active workspace 603 return LauncherAppState.isScreenLarge() && hitsPage(current - 1, x, y); 604 } 605 606 @Override 607 protected boolean hitsNextPage(float x, float y) { 608 // mNextPage is set to INVALID_PAGE whenever we are stationary. 609 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 610 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 611 612 // Only allow tap to next page on large devices, where there's significant margin outside 613 // the active workspace 614 return LauncherAppState.isScreenLarge() && hitsPage(current + 1, x, y); 615 } 616 617 /** 618 * Called directly from a CellLayout (not by the framework), after we've been added as a 619 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 620 * that it should intercept touch events, which is not something that is normally supported. 621 */ 622 @Override 623 public boolean onTouch(View v, MotionEvent event) { 624 return (isSmall() || !isFinishedSwitchingState()); 625 } 626 627 public boolean isSwitchingState() { 628 return mIsSwitchingState; 629 } 630 631 /** This differs from isSwitchingState in that we take into account how far the transition 632 * has completed. */ 633 public boolean isFinishedSwitchingState() { 634 return !mIsSwitchingState || (mTransitionProgress > 0.5f); 635 } 636 637 protected void onWindowVisibilityChanged (int visibility) { 638 mLauncher.onWindowVisibilityChanged(visibility); 639 } 640 641 @Override 642 public boolean dispatchUnhandledMove(View focused, int direction) { 643 if (isSmall() || !isFinishedSwitchingState()) { 644 // when the home screens are shrunken, shouldn't allow side-scrolling 645 return false; 646 } 647 return super.dispatchUnhandledMove(focused, direction); 648 } 649 650 @Override 651 public boolean onInterceptTouchEvent(MotionEvent ev) { 652 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 653 case MotionEvent.ACTION_DOWN: 654 mXDown = ev.getX(); 655 mYDown = ev.getY(); 656 break; 657 case MotionEvent.ACTION_POINTER_UP: 658 case MotionEvent.ACTION_UP: 659 if (mTouchState == TOUCH_STATE_REST) { 660 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 661 if (!currentPage.lastDownOnOccupiedCell()) { 662 onWallpaperTap(ev); 663 } 664 } 665 } 666 667 if (mLauncher != null && mLauncher.onTouch(this, ev)) { 668 return true; 669 } 670 671 return super.onInterceptTouchEvent(ev); 672 } 673 674 protected void reinflateWidgetsIfNecessary() { 675 final int clCount = getChildCount(); 676 for (int i = 0; i < clCount; i++) { 677 CellLayout cl = (CellLayout) getChildAt(i); 678 ShortcutAndWidgetContainer swc = cl.getShortcutsAndWidgets(); 679 final int itemCount = swc.getChildCount(); 680 for (int j = 0; j < itemCount; j++) { 681 View v = swc.getChildAt(j); 682 683 if (v.getTag() instanceof LauncherAppWidgetInfo) { 684 LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) v.getTag(); 685 LauncherAppWidgetHostView lahv = (LauncherAppWidgetHostView) info.hostView; 686 if (lahv != null && lahv.orientationChangedSincedInflation()) { 687 mLauncher.removeAppWidget(info); 688 // Remove the current widget which is inflated with the wrong orientation 689 cl.removeView(lahv); 690 mLauncher.bindAppWidget(info); 691 } 692 } 693 } 694 } 695 } 696 697 @Override 698 protected void determineScrollingStart(MotionEvent ev) { 699 if (isSmall()) return; 700 if (!isFinishedSwitchingState()) return; 701 702 float deltaX = Math.abs(ev.getX() - mXDown); 703 float deltaY = Math.abs(ev.getY() - mYDown); 704 705 if (Float.compare(deltaX, 0f) == 0) return; 706 707 float slope = deltaY / deltaX; 708 float theta = (float) Math.atan(slope); 709 710 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 711 cancelCurrentPageLongPress(); 712 } 713 714 if (theta > MAX_SWIPE_ANGLE) { 715 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 716 return; 717 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 718 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 719 // increase the touch slop to make it harder to begin scrolling the workspace. This 720 // results in vertically scrolling widgets to more easily. The higher the angle, the 721 // more we increase touch slop. 722 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 723 float extraRatio = (float) 724 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 725 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 726 } else { 727 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 728 super.determineScrollingStart(ev); 729 } 730 } 731 732 protected void onPageBeginMoving() { 733 super.onPageBeginMoving(); 734 735 if (isHardwareAccelerated()) { 736 updateChildrenLayersEnabled(false); 737 } else { 738 if (mNextPage != INVALID_PAGE) { 739 // we're snapping to a particular screen 740 enableChildrenCache(mCurrentPage, mNextPage); 741 } else { 742 // this is when user is actively dragging a particular screen, they might 743 // swipe it either left or right (but we won't advance by more than one screen) 744 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 745 } 746 } 747 748 // Only show page outlines as we pan if we are on large screen 749 if (LauncherAppState.isScreenLarge()) { 750 showOutlines(); 751 mIsStaticWallpaper = mWallpaperManager.getWallpaperInfo() == null; 752 } 753 754 // If we are not fading in adjacent screens, we still need to restore the alpha in case the 755 // user scrolls while we are transitioning (should not affect dispatchDraw optimizations) 756 if (!mWorkspaceFadeInAdjacentScreens) { 757 for (int i = 0; i < getChildCount(); ++i) { 758 ((CellLayout) getPageAt(i)).setShortcutAndWidgetAlpha(1f); 759 } 760 } 761 762 // Show the scroll indicator as you pan the page 763 showScrollingIndicator(false); 764 } 765 766 protected void onPageEndMoving() { 767 super.onPageEndMoving(); 768 769 if (isHardwareAccelerated()) { 770 updateChildrenLayersEnabled(false); 771 } else { 772 clearChildrenCache(); 773 } 774 775 776 if (mDragController.isDragging()) { 777 if (isSmall()) { 778 // If we are in springloaded mode, then force an event to check if the current touch 779 // is under a new page (to scroll to) 780 mDragController.forceTouchMove(); 781 } 782 } else { 783 // If we are not mid-dragging, hide the page outlines if we are on a large screen 784 if (LauncherAppState.isScreenLarge()) { 785 hideOutlines(); 786 } 787 788 // Hide the scroll indicator as you pan the page 789 if (!mDragController.isDragging()) { 790 hideScrollingIndicator(false); 791 } 792 } 793 794 if (mDelayedResizeRunnable != null) { 795 mDelayedResizeRunnable.run(); 796 mDelayedResizeRunnable = null; 797 } 798 799 if (mDelayedSnapToPageRunnable != null) { 800 mDelayedSnapToPageRunnable.run(); 801 mDelayedSnapToPageRunnable = null; 802 } 803 } 804 805 @Override 806 protected void notifyPageSwitchListener() { 807 super.notifyPageSwitchListener(); 808 Launcher.setScreen(mCurrentPage); 809 }; 810 811 // As a ratio of screen height, the total distance we want the parallax effect to span 812 // horizontally 813 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 814 float aspectRatio = width / (float) height; 815 816 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 817 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 818 // We will use these two data points to extrapolate how much the wallpaper parallax effect 819 // to span (ie travel) at any aspect ratio: 820 821 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 822 final float ASPECT_RATIO_PORTRAIT = 10/16f; 823 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 824 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 825 826 // To find out the desired width at different aspect ratios, we use the following two 827 // formulas, where the coefficient on x is the aspect ratio (width/height): 828 // (16/10)x + y = 1.5 829 // (10/16)x + y = 1.2 830 // We solve for x and y and end up with a final formula: 831 final float x = 832 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 833 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 834 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 835 return x * aspectRatio + y; 836 } 837 838 // The range of scroll values for Workspace 839 private int getScrollRange() { 840 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 841 } 842 843 protected void setWallpaperDimension() { 844 Point minDims = new Point(); 845 Point maxDims = new Point(); 846 mLauncher.getWindowManager().getDefaultDisplay().getCurrentSizeRange(minDims, maxDims); 847 848 final int maxDim = Math.max(maxDims.x, maxDims.y); 849 final int minDim = Math.min(minDims.x, minDims.y); 850 851 // We need to ensure that there is enough extra space in the wallpaper for the intended 852 // parallax effects 853 if (LauncherAppState.isScreenLarge()) { 854 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 855 mWallpaperHeight = maxDim; 856 } else { 857 mWallpaperWidth = Math.max((int) (minDim * WALLPAPER_SCREENS_SPAN), maxDim); 858 mWallpaperHeight = maxDim; 859 } 860 new Thread("setWallpaperDimension") { 861 public void run() { 862 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 863 } 864 }.start(); 865 } 866 867 private float wallpaperOffsetForCurrentScroll() { 868 // Set wallpaper offset steps (1 / (number of screens - 1)) 869 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f); 870 871 // For the purposes of computing the scrollRange and overScrollOffset, we assume 872 // that mLayoutScale is 1. This means that when we're in spring-loaded mode, 873 // there's no discrepancy between the wallpaper offset for a given page. 874 float layoutScale = mLayoutScale; 875 mLayoutScale = 1f; 876 int scrollRange = getScrollRange(); 877 878 // Again, we adjust the wallpaper offset to be consistent between values of mLayoutScale 879 float adjustedScrollX = Math.max(0, Math.min(getScrollX(), mMaxScrollX)); 880 adjustedScrollX *= mWallpaperScrollRatio; 881 mLayoutScale = layoutScale; 882 883 float scrollProgress = 884 adjustedScrollX / (float) scrollRange; 885 886 if (LauncherAppState.isScreenLarge() && mIsStaticWallpaper) { 887 // The wallpaper travel width is how far, from left to right, the wallpaper will move 888 // at this orientation. On tablets in portrait mode we don't move all the way to the 889 // edges of the wallpaper, or otherwise the parallax effect would be too strong. 890 int wallpaperTravelWidth = Math.min(mWallpaperTravelWidth, mWallpaperWidth); 891 892 float offsetInDips = wallpaperTravelWidth * scrollProgress + 893 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 894 float offset = offsetInDips / (float) mWallpaperWidth; 895 return offset; 896 } else { 897 return scrollProgress; 898 } 899 } 900 901 private void syncWallpaperOffsetWithScroll() { 902 final boolean enableWallpaperEffects = isHardwareAccelerated(); 903 if (enableWallpaperEffects) { 904 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 905 } 906 } 907 908 public void updateWallpaperOffsetImmediately() { 909 mUpdateWallpaperOffsetImmediately = true; 910 } 911 912 private void updateWallpaperOffsets() { 913 boolean updateNow = false; 914 boolean keepUpdating = true; 915 if (mUpdateWallpaperOffsetImmediately) { 916 updateNow = true; 917 keepUpdating = false; 918 mWallpaperOffset.jumpToFinal(); 919 mUpdateWallpaperOffsetImmediately = false; 920 } else { 921 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 922 } 923 if (updateNow) { 924 if (mWindowToken != null) { 925 mWallpaperManager.setWallpaperOffsets(mWindowToken, 926 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 927 } 928 } 929 if (keepUpdating) { 930 invalidate(); 931 } 932 } 933 934 @Override 935 protected void updateCurrentPageScroll() { 936 super.updateCurrentPageScroll(); 937 computeWallpaperScrollRatio(mCurrentPage); 938 } 939 940 @Override 941 protected void snapToPage(int whichPage) { 942 super.snapToPage(whichPage); 943 computeWallpaperScrollRatio(whichPage); 944 } 945 946 @Override 947 protected void snapToPage(int whichPage, int duration) { 948 super.snapToPage(whichPage, duration); 949 computeWallpaperScrollRatio(whichPage); 950 } 951 952 protected void snapToPage(int whichPage, Runnable r) { 953 if (mDelayedSnapToPageRunnable != null) { 954 mDelayedSnapToPageRunnable.run(); 955 } 956 mDelayedSnapToPageRunnable = r; 957 snapToPage(whichPage, SLOW_PAGE_SNAP_ANIMATION_DURATION); 958 } 959 960 private void computeWallpaperScrollRatio(int page) { 961 // Here, we determine what the desired scroll would be with and without a layout scale, 962 // and compute a ratio between the two. This allows us to adjust the wallpaper offset 963 // as though there is no layout scale. 964 float layoutScale = mLayoutScale; 965 int scaled = getChildOffset(page) - getRelativeChildOffset(page); 966 mLayoutScale = 1.0f; 967 float unscaled = getChildOffset(page) - getRelativeChildOffset(page); 968 mLayoutScale = layoutScale; 969 if (scaled > 0) { 970 mWallpaperScrollRatio = (1.0f * unscaled) / scaled; 971 } else { 972 mWallpaperScrollRatio = 1f; 973 } 974 } 975 976 class WallpaperOffsetInterpolator { 977 float mFinalHorizontalWallpaperOffset = 0.0f; 978 float mFinalVerticalWallpaperOffset = 0.5f; 979 float mHorizontalWallpaperOffset = 0.0f; 980 float mVerticalWallpaperOffset = 0.5f; 981 long mLastWallpaperOffsetUpdateTime; 982 boolean mIsMovingFast; 983 boolean mOverrideHorizontalCatchupConstant; 984 float mHorizontalCatchupConstant = 0.35f; 985 float mVerticalCatchupConstant = 0.35f; 986 987 public WallpaperOffsetInterpolator() { 988 } 989 990 public void setOverrideHorizontalCatchupConstant(boolean override) { 991 mOverrideHorizontalCatchupConstant = override; 992 } 993 994 public void setHorizontalCatchupConstant(float f) { 995 mHorizontalCatchupConstant = f; 996 } 997 998 public void setVerticalCatchupConstant(float f) { 999 mVerticalCatchupConstant = f; 1000 } 1001 1002 public boolean computeScrollOffset() { 1003 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 1004 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 1005 mIsMovingFast = false; 1006 return false; 1007 } 1008 boolean isLandscape = mDisplaySize.x > mDisplaySize.y; 1009 1010 long currentTime = System.currentTimeMillis(); 1011 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 1012 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 1013 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 1014 1015 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 1016 if (!mIsMovingFast && xdiff > 0.07) { 1017 mIsMovingFast = true; 1018 } 1019 1020 float fractionToCatchUpIn1MsHorizontal; 1021 if (mOverrideHorizontalCatchupConstant) { 1022 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 1023 } else if (mIsMovingFast) { 1024 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 1025 } else { 1026 // slow 1027 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 1028 } 1029 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 1030 1031 fractionToCatchUpIn1MsHorizontal /= 33f; 1032 fractionToCatchUpIn1MsVertical /= 33f; 1033 1034 final float UPDATE_THRESHOLD = 0.00001f; 1035 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 1036 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 1037 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 1038 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 1039 1040 // Don't have any lag between workspace and wallpaper on non-large devices 1041 if (!LauncherAppState.isScreenLarge() || jumpToFinalValue) { 1042 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 1043 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 1044 } else { 1045 float percentToCatchUpVertical = 1046 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 1047 float percentToCatchUpHorizontal = 1048 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 1049 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 1050 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 1051 } 1052 1053 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 1054 return true; 1055 } 1056 1057 public float getCurrX() { 1058 return mHorizontalWallpaperOffset; 1059 } 1060 1061 public float getFinalX() { 1062 return mFinalHorizontalWallpaperOffset; 1063 } 1064 1065 public float getCurrY() { 1066 return mVerticalWallpaperOffset; 1067 } 1068 1069 public float getFinalY() { 1070 return mFinalVerticalWallpaperOffset; 1071 } 1072 1073 public void setFinalX(float x) { 1074 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 1075 } 1076 1077 public void setFinalY(float y) { 1078 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 1079 } 1080 1081 public void jumpToFinal() { 1082 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 1083 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 1084 } 1085 } 1086 1087 @Override 1088 public void computeScroll() { 1089 super.computeScroll(); 1090 syncWallpaperOffsetWithScroll(); 1091 } 1092 1093 void showOutlines() { 1094 if (!isSmall() && !mIsSwitchingState) { 1095 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1096 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1097 mChildrenOutlineFadeInAnimation = LauncherAnimUtils.ofFloat(this, "childrenOutlineAlpha", 1.0f); 1098 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 1099 mChildrenOutlineFadeInAnimation.start(); 1100 } 1101 } 1102 1103 void hideOutlines() { 1104 if (!isSmall() && !mIsSwitchingState) { 1105 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1106 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1107 mChildrenOutlineFadeOutAnimation = LauncherAnimUtils.ofFloat(this, "childrenOutlineAlpha", 0.0f); 1108 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 1109 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 1110 mChildrenOutlineFadeOutAnimation.start(); 1111 } 1112 } 1113 1114 public void showOutlinesTemporarily() { 1115 if (!mIsPageMoving && !isTouchActive()) { 1116 snapToPage(mCurrentPage); 1117 } 1118 } 1119 1120 public void setChildrenOutlineAlpha(float alpha) { 1121 mChildrenOutlineAlpha = alpha; 1122 for (int i = 0; i < getChildCount(); i++) { 1123 CellLayout cl = (CellLayout) getChildAt(i); 1124 cl.setBackgroundAlpha(alpha); 1125 } 1126 } 1127 1128 public float getChildrenOutlineAlpha() { 1129 return mChildrenOutlineAlpha; 1130 } 1131 1132 void disableBackground() { 1133 mDrawBackground = false; 1134 } 1135 void enableBackground() { 1136 mDrawBackground = true; 1137 } 1138 1139 private void animateBackgroundGradient(float finalAlpha, boolean animated) { 1140 if (mBackground == null) return; 1141 if (mBackgroundFadeInAnimation != null) { 1142 mBackgroundFadeInAnimation.cancel(); 1143 mBackgroundFadeInAnimation = null; 1144 } 1145 if (mBackgroundFadeOutAnimation != null) { 1146 mBackgroundFadeOutAnimation.cancel(); 1147 mBackgroundFadeOutAnimation = null; 1148 } 1149 float startAlpha = getBackgroundAlpha(); 1150 if (finalAlpha != startAlpha) { 1151 if (animated) { 1152 mBackgroundFadeOutAnimation = 1153 LauncherAnimUtils.ofFloat(this, startAlpha, finalAlpha); 1154 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1155 public void onAnimationUpdate(ValueAnimator animation) { 1156 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1157 } 1158 }); 1159 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1160 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1161 mBackgroundFadeOutAnimation.start(); 1162 } else { 1163 setBackgroundAlpha(finalAlpha); 1164 } 1165 } 1166 } 1167 1168 public void setBackgroundAlpha(float alpha) { 1169 if (alpha != mBackgroundAlpha) { 1170 mBackgroundAlpha = alpha; 1171 invalidate(); 1172 } 1173 } 1174 1175 public float getBackgroundAlpha() { 1176 return mBackgroundAlpha; 1177 } 1178 1179 float backgroundAlphaInterpolator(float r) { 1180 float pivotA = 0.1f; 1181 float pivotB = 0.4f; 1182 if (r < pivotA) { 1183 return 0; 1184 } else if (r > pivotB) { 1185 return 1.0f; 1186 } else { 1187 return (r - pivotA)/(pivotB - pivotA); 1188 } 1189 } 1190 1191 private void updatePageAlphaValues(int screenCenter) { 1192 boolean isInOverscroll = mOverScrollX < 0 || mOverScrollX > mMaxScrollX; 1193 if (mWorkspaceFadeInAdjacentScreens && 1194 mState == State.NORMAL && 1195 !mIsSwitchingState && 1196 !isInOverscroll) { 1197 for (int i = 0; i < getChildCount(); i++) { 1198 CellLayout child = (CellLayout) getChildAt(i); 1199 if (child != null) { 1200 float scrollProgress = getScrollProgress(screenCenter, child, i); 1201 float alpha = 1 - Math.abs(scrollProgress); 1202 child.getShortcutsAndWidgets().setAlpha(alpha); 1203 if (!mIsDragOccuring) { 1204 child.setBackgroundAlphaMultiplier( 1205 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1206 } else { 1207 child.setBackgroundAlphaMultiplier(1f); 1208 } 1209 } 1210 } 1211 } 1212 } 1213 1214 private void setChildrenBackgroundAlphaMultipliers(float a) { 1215 for (int i = 0; i < getChildCount(); i++) { 1216 CellLayout child = (CellLayout) getChildAt(i); 1217 child.setBackgroundAlphaMultiplier(a); 1218 } 1219 } 1220 1221 @Override 1222 protected void screenScrolled(int screenCenter) { 1223 final boolean isRtl = isLayoutRtl(); 1224 super.screenScrolled(screenCenter); 1225 1226 updatePageAlphaValues(screenCenter); 1227 enableHwLayersOnVisiblePages(); 1228 1229 if (mOverScrollX < 0 || mOverScrollX > mMaxScrollX) { 1230 int index = 0; 1231 float pivotX = 0f; 1232 final float leftBiasedPivot = 0.25f; 1233 final float rightBiasedPivot = 0.75f; 1234 final int lowerIndex = 0; 1235 final int upperIndex = getChildCount() - 1; 1236 if (isRtl) { 1237 index = mOverScrollX < 0 ? upperIndex : lowerIndex; 1238 pivotX = (index == 0 ? leftBiasedPivot : rightBiasedPivot); 1239 } else { 1240 index = mOverScrollX < 0 ? lowerIndex : upperIndex; 1241 pivotX = (index == 0 ? rightBiasedPivot : leftBiasedPivot); 1242 } 1243 1244 CellLayout cl = (CellLayout) getChildAt(index); 1245 float scrollProgress = getScrollProgress(screenCenter, cl, index); 1246 final boolean isLeftPage = (isRtl ? index > 0 : index == 0); 1247 cl.setOverScrollAmount(Math.abs(scrollProgress), isLeftPage); 1248 float rotation = -WORKSPACE_OVERSCROLL_ROTATION * scrollProgress; 1249 cl.setRotationY(rotation); 1250 setFadeForOverScroll(Math.abs(scrollProgress)); 1251 if (!mOverscrollTransformsSet) { 1252 mOverscrollTransformsSet = true; 1253 cl.setCameraDistance(mDensity * mCameraDistance); 1254 cl.setPivotX(cl.getMeasuredWidth() * pivotX); 1255 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1256 cl.setOverscrollTransformsDirty(true); 1257 } 1258 } else { 1259 if (mOverscrollFade != 0) { 1260 setFadeForOverScroll(0); 1261 } 1262 if (mOverscrollTransformsSet) { 1263 mOverscrollTransformsSet = false; 1264 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1265 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1266 } 1267 } 1268 } 1269 1270 @Override 1271 protected void overScroll(float amount) { 1272 acceleratedOverScroll(amount); 1273 } 1274 1275 protected void onAttachedToWindow() { 1276 super.onAttachedToWindow(); 1277 mWindowToken = getWindowToken(); 1278 computeScroll(); 1279 mDragController.setWindowToken(mWindowToken); 1280 } 1281 1282 protected void onDetachedFromWindow() { 1283 mWindowToken = null; 1284 } 1285 1286 @Override 1287 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1288 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1289 mUpdateWallpaperOffsetImmediately = true; 1290 } 1291 super.onLayout(changed, left, top, right, bottom); 1292 } 1293 1294 @Override 1295 protected void onDraw(Canvas canvas) { 1296 updateWallpaperOffsets(); 1297 1298 // Draw the background gradient if necessary 1299 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1300 int alpha = (int) (mBackgroundAlpha * 255); 1301 mBackground.setAlpha(alpha); 1302 mBackground.setBounds(getScrollX(), 0, getScrollX() + getMeasuredWidth(), 1303 getMeasuredHeight()); 1304 mBackground.draw(canvas); 1305 } 1306 1307 super.onDraw(canvas); 1308 1309 // Call back to LauncherModel to finish binding after the first draw 1310 post(mBindPages); 1311 } 1312 1313 boolean isDrawingBackgroundGradient() { 1314 return (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground); 1315 } 1316 1317 @Override 1318 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1319 if (!mLauncher.isAllAppsVisible()) { 1320 final Folder openFolder = getOpenFolder(); 1321 if (openFolder != null) { 1322 return openFolder.requestFocus(direction, previouslyFocusedRect); 1323 } else { 1324 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1325 } 1326 } 1327 return false; 1328 } 1329 1330 @Override 1331 public int getDescendantFocusability() { 1332 if (isSmall()) { 1333 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1334 } 1335 return super.getDescendantFocusability(); 1336 } 1337 1338 @Override 1339 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1340 if (!mLauncher.isAllAppsVisible()) { 1341 final Folder openFolder = getOpenFolder(); 1342 if (openFolder != null) { 1343 openFolder.addFocusables(views, direction); 1344 } else { 1345 super.addFocusables(views, direction, focusableMode); 1346 } 1347 } 1348 } 1349 1350 public boolean isSmall() { 1351 return mState == State.SMALL || mState == State.SPRING_LOADED; 1352 } 1353 1354 void enableChildrenCache(int fromPage, int toPage) { 1355 if (fromPage > toPage) { 1356 final int temp = fromPage; 1357 fromPage = toPage; 1358 toPage = temp; 1359 } 1360 1361 final int screenCount = getChildCount(); 1362 1363 fromPage = Math.max(fromPage, 0); 1364 toPage = Math.min(toPage, screenCount - 1); 1365 1366 for (int i = fromPage; i <= toPage; i++) { 1367 final CellLayout layout = (CellLayout) getChildAt(i); 1368 layout.setChildrenDrawnWithCacheEnabled(true); 1369 layout.setChildrenDrawingCacheEnabled(true); 1370 } 1371 } 1372 1373 void clearChildrenCache() { 1374 final int screenCount = getChildCount(); 1375 for (int i = 0; i < screenCount; i++) { 1376 final CellLayout layout = (CellLayout) getChildAt(i); 1377 layout.setChildrenDrawnWithCacheEnabled(false); 1378 // In software mode, we don't want the items to continue to be drawn into bitmaps 1379 if (!isHardwareAccelerated()) { 1380 layout.setChildrenDrawingCacheEnabled(false); 1381 } 1382 } 1383 } 1384 1385 1386 private void updateChildrenLayersEnabled(boolean force) { 1387 boolean small = mState == State.SMALL || mIsSwitchingState; 1388 boolean enableChildrenLayers = force || small || mAnimatingViewIntoPlace || isPageMoving(); 1389 1390 if (enableChildrenLayers != mChildrenLayersEnabled) { 1391 mChildrenLayersEnabled = enableChildrenLayers; 1392 if (mChildrenLayersEnabled) { 1393 enableHwLayersOnVisiblePages(); 1394 } else { 1395 for (int i = 0; i < getPageCount(); i++) { 1396 final CellLayout cl = (CellLayout) getChildAt(i); 1397 cl.disableHardwareLayers(); 1398 } 1399 } 1400 } 1401 } 1402 1403 private void enableHwLayersOnVisiblePages() { 1404 if (mChildrenLayersEnabled) { 1405 final int screenCount = getChildCount(); 1406 getVisiblePages(mTempVisiblePagesRange); 1407 int leftScreen = mTempVisiblePagesRange[0]; 1408 int rightScreen = mTempVisiblePagesRange[1]; 1409 if (leftScreen == rightScreen) { 1410 // make sure we're caching at least two pages always 1411 if (rightScreen < screenCount - 1) { 1412 rightScreen++; 1413 } else if (leftScreen > 0) { 1414 leftScreen--; 1415 } 1416 } 1417 for (int i = 0; i < screenCount; i++) { 1418 final CellLayout layout = (CellLayout) getPageAt(i); 1419 if (!(leftScreen <= i && i <= rightScreen && shouldDrawChild(layout))) { 1420 layout.disableHardwareLayers(); 1421 } 1422 } 1423 for (int i = 0; i < screenCount; i++) { 1424 final CellLayout layout = (CellLayout) getPageAt(i); 1425 if (leftScreen <= i && i <= rightScreen && shouldDrawChild(layout)) { 1426 layout.enableHardwareLayers(); 1427 } 1428 } 1429 } 1430 } 1431 1432 public void buildPageHardwareLayers() { 1433 // force layers to be enabled just for the call to buildLayer 1434 updateChildrenLayersEnabled(true); 1435 if (getWindowToken() != null) { 1436 final int childCount = getChildCount(); 1437 for (int i = 0; i < childCount; i++) { 1438 CellLayout cl = (CellLayout) getChildAt(i); 1439 cl.buildHardwareLayer(); 1440 } 1441 } 1442 updateChildrenLayersEnabled(false); 1443 } 1444 1445 protected void onWallpaperTap(MotionEvent ev) { 1446 final int[] position = mTempCell; 1447 getLocationOnScreen(position); 1448 1449 int pointerIndex = ev.getActionIndex(); 1450 position[0] += (int) ev.getX(pointerIndex); 1451 position[1] += (int) ev.getY(pointerIndex); 1452 1453 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1454 ev.getAction() == MotionEvent.ACTION_UP 1455 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1456 position[0], position[1], 0, null); 1457 } 1458 1459 /* 1460 * This interpolator emulates the rate at which the perceived scale of an object changes 1461 * as its distance from a camera increases. When this interpolator is applied to a scale 1462 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1463 * from the camera. 1464 */ 1465 static class ZInterpolator implements TimeInterpolator { 1466 private float focalLength; 1467 1468 public ZInterpolator(float foc) { 1469 focalLength = foc; 1470 } 1471 1472 public float getInterpolation(float input) { 1473 return (1.0f - focalLength / (focalLength + input)) / 1474 (1.0f - focalLength / (focalLength + 1.0f)); 1475 } 1476 } 1477 1478 /* 1479 * The exact reverse of ZInterpolator. 1480 */ 1481 static class InverseZInterpolator implements TimeInterpolator { 1482 private ZInterpolator zInterpolator; 1483 public InverseZInterpolator(float foc) { 1484 zInterpolator = new ZInterpolator(foc); 1485 } 1486 public float getInterpolation(float input) { 1487 return 1 - zInterpolator.getInterpolation(1 - input); 1488 } 1489 } 1490 1491 /* 1492 * ZInterpolator compounded with an ease-out. 1493 */ 1494 static class ZoomOutInterpolator implements TimeInterpolator { 1495 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(0.75f); 1496 private final ZInterpolator zInterpolator = new ZInterpolator(0.13f); 1497 1498 public float getInterpolation(float input) { 1499 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1500 } 1501 } 1502 1503 /* 1504 * InvereZInterpolator compounded with an ease-out. 1505 */ 1506 static class ZoomInInterpolator implements TimeInterpolator { 1507 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1508 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1509 1510 public float getInterpolation(float input) { 1511 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1512 } 1513 } 1514 1515 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1516 1517 /* 1518 * 1519 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1520 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1521 * 1522 * These methods mark the appropriate pages as accepting drops (which alters their visual 1523 * appearance). 1524 * 1525 */ 1526 public void onDragStartedWithItem(View v) { 1527 final Canvas canvas = new Canvas(); 1528 1529 // The outline is used to visualize where the item will land if dropped 1530 mDragOutline = createDragOutline(v, canvas, DRAG_BITMAP_PADDING); 1531 } 1532 1533 public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, boolean clipAlpha) { 1534 final Canvas canvas = new Canvas(); 1535 1536 int[] size = estimateItemSize(info.spanX, info.spanY, info, false); 1537 1538 // The outline is used to visualize where the item will land if dropped 1539 mDragOutline = createDragOutline(b, canvas, DRAG_BITMAP_PADDING, size[0], 1540 size[1], clipAlpha); 1541 } 1542 1543 public void exitWidgetResizeMode() { 1544 DragLayer dragLayer = mLauncher.getDragLayer(); 1545 dragLayer.clearAllResizeFrames(); 1546 } 1547 1548 private void initAnimationArrays() { 1549 final int childCount = getChildCount(); 1550 if (mOldTranslationXs != null) return; 1551 mOldTranslationXs = new float[childCount]; 1552 mOldTranslationYs = new float[childCount]; 1553 mOldScaleXs = new float[childCount]; 1554 mOldScaleYs = new float[childCount]; 1555 mOldBackgroundAlphas = new float[childCount]; 1556 mOldAlphas = new float[childCount]; 1557 mNewTranslationXs = new float[childCount]; 1558 mNewTranslationYs = new float[childCount]; 1559 mNewScaleXs = new float[childCount]; 1560 mNewScaleYs = new float[childCount]; 1561 mNewBackgroundAlphas = new float[childCount]; 1562 mNewAlphas = new float[childCount]; 1563 mNewRotationYs = new float[childCount]; 1564 } 1565 1566 Animator getChangeStateAnimation(final State state, boolean animated) { 1567 return getChangeStateAnimation(state, animated, 0); 1568 } 1569 1570 Animator getChangeStateAnimation(final State state, boolean animated, int delay) { 1571 if (mState == state) { 1572 return null; 1573 } 1574 1575 // Initialize animation arrays for the first time if necessary 1576 initAnimationArrays(); 1577 1578 AnimatorSet anim = animated ? LauncherAnimUtils.createAnimatorSet() : null; 1579 1580 // Stop any scrolling, move to the current page right away 1581 setCurrentPage(getNextPage()); 1582 1583 final State oldState = mState; 1584 final boolean oldStateIsNormal = (oldState == State.NORMAL); 1585 final boolean oldStateIsSpringLoaded = (oldState == State.SPRING_LOADED); 1586 final boolean oldStateIsSmall = (oldState == State.SMALL); 1587 mState = state; 1588 final boolean stateIsNormal = (state == State.NORMAL); 1589 final boolean stateIsSpringLoaded = (state == State.SPRING_LOADED); 1590 final boolean stateIsSmall = (state == State.SMALL); 1591 float finalScaleFactor = 1.0f; 1592 float finalBackgroundAlpha = stateIsSpringLoaded ? 1.0f : 0f; 1593 float translationX = 0; 1594 float translationY = 0; 1595 boolean zoomIn = true; 1596 1597 if (state != State.NORMAL) { 1598 finalScaleFactor = mSpringLoadedShrinkFactor - (stateIsSmall ? 0.1f : 0); 1599 setPageSpacing(mSpringLoadedPageSpacing); 1600 if (oldStateIsNormal && stateIsSmall) { 1601 zoomIn = false; 1602 setLayoutScale(finalScaleFactor); 1603 updateChildrenLayersEnabled(false); 1604 } else { 1605 finalBackgroundAlpha = 1.0f; 1606 setLayoutScale(finalScaleFactor); 1607 } 1608 } else { 1609 setPageSpacing(mOriginalPageSpacing); 1610 setLayoutScale(1.0f); 1611 } 1612 1613 final int duration = zoomIn ? 1614 getResources().getInteger(R.integer.config_workspaceUnshrinkTime) : 1615 getResources().getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1616 for (int i = 0; i < getChildCount(); i++) { 1617 final CellLayout cl = (CellLayout) getChildAt(i); 1618 float finalAlpha = (!mWorkspaceFadeInAdjacentScreens || stateIsSpringLoaded || 1619 (i == mCurrentPage)) ? 1f : 0f; 1620 float currentAlpha = cl.getShortcutsAndWidgets().getAlpha(); 1621 float initialAlpha = currentAlpha; 1622 1623 // Determine the pages alpha during the state transition 1624 if ((oldStateIsSmall && stateIsNormal) || 1625 (oldStateIsNormal && stateIsSmall)) { 1626 // To/from workspace - only show the current page unless the transition is not 1627 // animated and the animation end callback below doesn't run; 1628 // or, if we're in spring-loaded mode 1629 if (i == mCurrentPage || !animated || oldStateIsSpringLoaded) { 1630 finalAlpha = 1f; 1631 } else { 1632 initialAlpha = 0f; 1633 finalAlpha = 0f; 1634 } 1635 } 1636 1637 mOldAlphas[i] = initialAlpha; 1638 mNewAlphas[i] = finalAlpha; 1639 if (animated) { 1640 mOldTranslationXs[i] = cl.getTranslationX(); 1641 mOldTranslationYs[i] = cl.getTranslationY(); 1642 mOldScaleXs[i] = cl.getScaleX(); 1643 mOldScaleYs[i] = cl.getScaleY(); 1644 mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1645 1646 mNewTranslationXs[i] = translationX; 1647 mNewTranslationYs[i] = translationY; 1648 mNewScaleXs[i] = finalScaleFactor; 1649 mNewScaleYs[i] = finalScaleFactor; 1650 mNewBackgroundAlphas[i] = finalBackgroundAlpha; 1651 } else { 1652 cl.setTranslationX(translationX); 1653 cl.setTranslationY(translationY); 1654 cl.setScaleX(finalScaleFactor); 1655 cl.setScaleY(finalScaleFactor); 1656 cl.setBackgroundAlpha(finalBackgroundAlpha); 1657 cl.setShortcutAndWidgetAlpha(finalAlpha); 1658 } 1659 } 1660 1661 if (animated) { 1662 for (int index = 0; index < getChildCount(); index++) { 1663 final int i = index; 1664 final CellLayout cl = (CellLayout) getChildAt(i); 1665 float currentAlpha = cl.getShortcutsAndWidgets().getAlpha(); 1666 if (mOldAlphas[i] == 0 && mNewAlphas[i] == 0) { 1667 cl.setTranslationX(mNewTranslationXs[i]); 1668 cl.setTranslationY(mNewTranslationYs[i]); 1669 cl.setScaleX(mNewScaleXs[i]); 1670 cl.setScaleY(mNewScaleYs[i]); 1671 cl.setBackgroundAlpha(mNewBackgroundAlphas[i]); 1672 cl.setShortcutAndWidgetAlpha(mNewAlphas[i]); 1673 cl.setRotationY(mNewRotationYs[i]); 1674 } else { 1675 LauncherViewPropertyAnimator a = new LauncherViewPropertyAnimator(cl); 1676 a.translationX(mNewTranslationXs[i]) 1677 .translationY(mNewTranslationYs[i]) 1678 .scaleX(mNewScaleXs[i]) 1679 .scaleY(mNewScaleYs[i]) 1680 .setDuration(duration) 1681 .setInterpolator(mZoomInInterpolator); 1682 anim.play(a); 1683 1684 if (mOldAlphas[i] != mNewAlphas[i] || currentAlpha != mNewAlphas[i]) { 1685 LauncherViewPropertyAnimator alphaAnim = 1686 new LauncherViewPropertyAnimator(cl.getShortcutsAndWidgets()); 1687 alphaAnim.alpha(mNewAlphas[i]) 1688 .setDuration(duration) 1689 .setInterpolator(mZoomInInterpolator); 1690 anim.play(alphaAnim); 1691 } 1692 if (mOldBackgroundAlphas[i] != 0 || 1693 mNewBackgroundAlphas[i] != 0) { 1694 ValueAnimator bgAnim = 1695 LauncherAnimUtils.ofFloat(cl, 0f, 1f).setDuration(duration); 1696 bgAnim.setInterpolator(mZoomInInterpolator); 1697 bgAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1698 public void onAnimationUpdate(float a, float b) { 1699 cl.setBackgroundAlpha( 1700 a * mOldBackgroundAlphas[i] + 1701 b * mNewBackgroundAlphas[i]); 1702 } 1703 }); 1704 anim.play(bgAnim); 1705 } 1706 } 1707 } 1708 anim.setStartDelay(delay); 1709 } 1710 1711 if (stateIsSpringLoaded) { 1712 // Right now we're covered by Apps Customize 1713 // Show the background gradient immediately, so the gradient will 1714 // be showing once AppsCustomize disappears 1715 animateBackgroundGradient(getResources().getInteger( 1716 R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, false); 1717 } else { 1718 // Fade the background gradient away 1719 animateBackgroundGradient(0f, true); 1720 } 1721 return anim; 1722 } 1723 1724 @Override 1725 public void onLauncherTransitionPrepare(Launcher l, boolean animated, boolean toWorkspace) { 1726 mIsSwitchingState = true; 1727 updateChildrenLayersEnabled(false); 1728 cancelScrollingIndicatorAnimations(); 1729 } 1730 1731 @Override 1732 public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) { 1733 } 1734 1735 @Override 1736 public void onLauncherTransitionStep(Launcher l, float t) { 1737 mTransitionProgress = t; 1738 } 1739 1740 @Override 1741 public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) { 1742 mIsSwitchingState = false; 1743 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 1744 updateChildrenLayersEnabled(false); 1745 // The code in getChangeStateAnimation to determine initialAlpha and finalAlpha will ensure 1746 // ensure that only the current page is visible during (and subsequently, after) the 1747 // transition animation. If fade adjacent pages is disabled, then re-enable the page 1748 // visibility after the transition animation. 1749 if (!mWorkspaceFadeInAdjacentScreens) { 1750 for (int i = 0; i < getChildCount(); i++) { 1751 final CellLayout cl = (CellLayout) getChildAt(i); 1752 cl.setShortcutAndWidgetAlpha(1f); 1753 } 1754 } 1755 } 1756 1757 @Override 1758 public View getContent() { 1759 return this; 1760 } 1761 1762 /** 1763 * Draw the View v into the given Canvas. 1764 * 1765 * @param v the view to draw 1766 * @param destCanvas the canvas to draw on 1767 * @param padding the horizontal and vertical padding to use when drawing 1768 */ 1769 private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { 1770 final Rect clipRect = mTempRect; 1771 v.getDrawingRect(clipRect); 1772 1773 boolean textVisible = false; 1774 1775 destCanvas.save(); 1776 if (v instanceof TextView && pruneToDrawable) { 1777 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1778 clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); 1779 destCanvas.translate(padding / 2, padding / 2); 1780 d.draw(destCanvas); 1781 } else { 1782 if (v instanceof FolderIcon) { 1783 // For FolderIcons the text can bleed into the icon area, and so we need to 1784 // hide the text completely (which can't be achieved by clipping). 1785 if (((FolderIcon) v).getTextVisible()) { 1786 ((FolderIcon) v).setTextVisible(false); 1787 textVisible = true; 1788 } 1789 } else if (v instanceof BubbleTextView) { 1790 final BubbleTextView tv = (BubbleTextView) v; 1791 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1792 tv.getLayout().getLineTop(0); 1793 } else if (v instanceof TextView) { 1794 final TextView tv = (TextView) v; 1795 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1796 tv.getLayout().getLineTop(0); 1797 } 1798 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1799 destCanvas.clipRect(clipRect, Op.REPLACE); 1800 v.draw(destCanvas); 1801 1802 // Restore text visibility of FolderIcon if necessary 1803 if (textVisible) { 1804 ((FolderIcon) v).setTextVisible(true); 1805 } 1806 } 1807 destCanvas.restore(); 1808 } 1809 1810 /** 1811 * Returns a new bitmap to show when the given View is being dragged around. 1812 * Responsibility for the bitmap is transferred to the caller. 1813 */ 1814 public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1815 Bitmap b; 1816 1817 if (v instanceof TextView) { 1818 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1819 b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, 1820 d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); 1821 } else { 1822 b = Bitmap.createBitmap( 1823 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1824 } 1825 1826 canvas.setBitmap(b); 1827 drawDragView(v, canvas, padding, true); 1828 canvas.setBitmap(null); 1829 1830 return b; 1831 } 1832 1833 /** 1834 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1835 * Responsibility for the bitmap is transferred to the caller. 1836 */ 1837 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1838 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1839 final Bitmap b = Bitmap.createBitmap( 1840 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1841 1842 canvas.setBitmap(b); 1843 drawDragView(v, canvas, padding, true); 1844 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1845 canvas.setBitmap(null); 1846 return b; 1847 } 1848 1849 /** 1850 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1851 * Responsibility for the bitmap is transferred to the caller. 1852 */ 1853 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h, 1854 boolean clipAlpha) { 1855 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1856 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1857 canvas.setBitmap(b); 1858 1859 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 1860 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 1861 (h - padding) / (float) orig.getHeight()); 1862 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 1863 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 1864 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 1865 1866 // center the image 1867 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 1868 1869 canvas.drawBitmap(orig, src, dst, null); 1870 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor, 1871 clipAlpha); 1872 canvas.setBitmap(null); 1873 1874 return b; 1875 } 1876 1877 void startDrag(CellLayout.CellInfo cellInfo) { 1878 View child = cellInfo.cell; 1879 1880 // Make sure the drag was started by a long press as opposed to a long click. 1881 if (!child.isInTouchMode()) { 1882 return; 1883 } 1884 1885 mDragInfo = cellInfo; 1886 child.setVisibility(INVISIBLE); 1887 CellLayout layout = (CellLayout) child.getParent().getParent(); 1888 layout.prepareChildForDrag(child); 1889 1890 child.clearFocus(); 1891 child.setPressed(false); 1892 1893 final Canvas canvas = new Canvas(); 1894 1895 // The outline is used to visualize where the item will land if dropped 1896 mDragOutline = createDragOutline(child, canvas, DRAG_BITMAP_PADDING); 1897 beginDragShared(child, this); 1898 } 1899 1900 public void beginDragShared(View child, DragSource source) { 1901 Resources r = getResources(); 1902 1903 // The drag bitmap follows the touch point around on the screen 1904 final Bitmap b = createDragBitmap(child, new Canvas(), DRAG_BITMAP_PADDING); 1905 1906 final int bmpWidth = b.getWidth(); 1907 final int bmpHeight = b.getHeight(); 1908 1909 float scale = mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 1910 int dragLayerX = 1911 Math.round(mTempXY[0] - (bmpWidth - scale * child.getWidth()) / 2); 1912 int dragLayerY = 1913 Math.round(mTempXY[1] - (bmpHeight - scale * bmpHeight) / 2 1914 - DRAG_BITMAP_PADDING / 2); 1915 1916 Point dragVisualizeOffset = null; 1917 Rect dragRect = null; 1918 if (child instanceof BubbleTextView || child instanceof PagedViewIcon) { 1919 int iconSize = r.getDimensionPixelSize(R.dimen.app_icon_size); 1920 int iconPaddingTop = r.getDimensionPixelSize(R.dimen.app_icon_padding_top); 1921 int top = child.getPaddingTop(); 1922 int left = (bmpWidth - iconSize) / 2; 1923 int right = left + iconSize; 1924 int bottom = top + iconSize; 1925 dragLayerY += top; 1926 // Note: The drag region is used to calculate drag layer offsets, but the 1927 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 1928 dragVisualizeOffset = new Point(-DRAG_BITMAP_PADDING / 2, 1929 iconPaddingTop - DRAG_BITMAP_PADDING / 2); 1930 dragRect = new Rect(left, top, right, bottom); 1931 } else if (child instanceof FolderIcon) { 1932 int previewSize = r.getDimensionPixelSize(R.dimen.folder_preview_size); 1933 dragRect = new Rect(0, 0, child.getWidth(), previewSize); 1934 } 1935 1936 // Clear the pressed state if necessary 1937 if (child instanceof BubbleTextView) { 1938 BubbleTextView icon = (BubbleTextView) child; 1939 icon.clearPressedOrFocusedBackground(); 1940 } 1941 1942 mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 1943 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect, scale); 1944 b.recycle(); 1945 1946 // Show the scrolling indicator when you pick up an item 1947 showScrollingIndicator(false); 1948 } 1949 1950 void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, int screen, 1951 int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { 1952 View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); 1953 1954 final int[] cellXY = new int[2]; 1955 target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1956 addInScreen(view, container, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1957 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, cellXY[0], 1958 cellXY[1]); 1959 } 1960 1961 public boolean transitionStateShouldAllowDrop() { 1962 return ((!isSwitchingState() || mTransitionProgress > 0.5f) && mState != State.SMALL); 1963 } 1964 1965 /** 1966 * {@inheritDoc} 1967 */ 1968 public boolean acceptDrop(DragObject d) { 1969 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1970 CellLayout dropTargetLayout = mDropToLayout; 1971 if (d.dragSource != this) { 1972 // Don't accept the drop if we're not over a screen at time of drop 1973 if (dropTargetLayout == null) { 1974 return false; 1975 } 1976 if (!transitionStateShouldAllowDrop()) return false; 1977 1978 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 1979 d.dragView, mDragViewVisualCenter); 1980 1981 // We want the point to be mapped to the dragTarget. 1982 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 1983 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 1984 } else { 1985 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 1986 } 1987 1988 int spanX = 1; 1989 int spanY = 1; 1990 if (mDragInfo != null) { 1991 final CellLayout.CellInfo dragCellInfo = mDragInfo; 1992 spanX = dragCellInfo.spanX; 1993 spanY = dragCellInfo.spanY; 1994 } else { 1995 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 1996 spanX = dragInfo.spanX; 1997 spanY = dragInfo.spanY; 1998 } 1999 2000 int minSpanX = spanX; 2001 int minSpanY = spanY; 2002 if (d.dragInfo instanceof PendingAddWidgetInfo) { 2003 minSpanX = ((PendingAddWidgetInfo) d.dragInfo).minSpanX; 2004 minSpanY = ((PendingAddWidgetInfo) d.dragInfo).minSpanY; 2005 } 2006 2007 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2008 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, dropTargetLayout, 2009 mTargetCell); 2010 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2011 mDragViewVisualCenter[1], mTargetCell); 2012 if (willCreateUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, 2013 mTargetCell, distance, true)) { 2014 return true; 2015 } 2016 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, 2017 mTargetCell, distance)) { 2018 return true; 2019 } 2020 2021 int[] resultSpan = new int[2]; 2022 mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], 2023 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2024 null, mTargetCell, resultSpan, CellLayout.MODE_ACCEPT_DROP); 2025 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2026 2027 // Don't accept the drop if there's no room for the item 2028 if (!foundCell) { 2029 // Don't show the message if we are dropping on the AllApps button and the hotseat 2030 // is full 2031 boolean isHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2032 if (mTargetCell != null && isHotseat) { 2033 Hotseat hotseat = mLauncher.getHotseat(); 2034 if (hotseat.isAllAppsButtonRank( 2035 hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { 2036 return false; 2037 } 2038 } 2039 2040 mLauncher.showOutOfSpaceMessage(isHotseat); 2041 return false; 2042 } 2043 } 2044 return true; 2045 } 2046 2047 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, float 2048 distance, boolean considerTimeout) { 2049 if (distance > mMaxDistanceForFolderCreation) return false; 2050 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2051 2052 if (dropOverView != null) { 2053 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2054 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2055 return false; 2056 } 2057 } 2058 2059 boolean hasntMoved = false; 2060 if (mDragInfo != null) { 2061 hasntMoved = dropOverView == mDragInfo.cell; 2062 } 2063 2064 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2065 return false; 2066 } 2067 2068 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2069 boolean willBecomeShortcut = 2070 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2071 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2072 2073 return (aboveShortcut && willBecomeShortcut); 2074 } 2075 2076 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell, 2077 float distance) { 2078 if (distance > mMaxDistanceForFolderCreation) return false; 2079 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2080 2081 if (dropOverView != null) { 2082 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2083 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2084 return false; 2085 } 2086 } 2087 2088 if (dropOverView instanceof FolderIcon) { 2089 FolderIcon fi = (FolderIcon) dropOverView; 2090 if (fi.acceptDrop(dragInfo)) { 2091 return true; 2092 } 2093 } 2094 return false; 2095 } 2096 2097 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2098 int[] targetCell, float distance, boolean external, DragView dragView, 2099 Runnable postAnimationRunnable) { 2100 if (distance > mMaxDistanceForFolderCreation) return false; 2101 View v = target.getChildAt(targetCell[0], targetCell[1]); 2102 2103 boolean hasntMoved = false; 2104 if (mDragInfo != null) { 2105 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2106 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2107 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2108 } 2109 2110 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2111 mCreateUserFolderOnDrop = false; 2112 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 2113 2114 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2115 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2116 2117 if (aboveShortcut && willBecomeShortcut) { 2118 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2119 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2120 // if the drag started here, we need to remove it from the workspace 2121 if (!external) { 2122 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2123 } 2124 2125 Rect folderLocation = new Rect(); 2126 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2127 target.removeView(v); 2128 2129 FolderIcon fi = 2130 mLauncher.addFolder(target, container, screen, targetCell[0], targetCell[1]); 2131 destInfo.cellX = -1; 2132 destInfo.cellY = -1; 2133 sourceInfo.cellX = -1; 2134 sourceInfo.cellY = -1; 2135 2136 // If the dragView is null, we can't animate 2137 boolean animate = dragView != null; 2138 if (animate) { 2139 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2140 postAnimationRunnable); 2141 } else { 2142 fi.addItem(destInfo); 2143 fi.addItem(sourceInfo); 2144 } 2145 return true; 2146 } 2147 return false; 2148 } 2149 2150 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2151 float distance, DragObject d, boolean external) { 2152 if (distance > mMaxDistanceForFolderCreation) return false; 2153 2154 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2155 if (!mAddToExistingFolderOnDrop) return false; 2156 mAddToExistingFolderOnDrop = false; 2157 2158 if (dropOverView instanceof FolderIcon) { 2159 FolderIcon fi = (FolderIcon) dropOverView; 2160 if (fi.acceptDrop(d.dragInfo)) { 2161 fi.onDrop(d); 2162 2163 // if the drag started here, we need to remove it from the workspace 2164 if (!external) { 2165 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2166 } 2167 return true; 2168 } 2169 } 2170 return false; 2171 } 2172 2173 public void onDrop(final DragObject d) { 2174 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2175 mDragViewVisualCenter); 2176 2177 CellLayout dropTargetLayout = mDropToLayout; 2178 2179 // We want the point to be mapped to the dragTarget. 2180 if (dropTargetLayout != null) { 2181 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 2182 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2183 } else { 2184 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 2185 } 2186 } 2187 2188 int snapScreen = -1; 2189 boolean resizeOnDrop = false; 2190 if (d.dragSource != this) { 2191 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2192 (int) mDragViewVisualCenter[1] }; 2193 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2194 } else if (mDragInfo != null) { 2195 final View cell = mDragInfo.cell; 2196 2197 Runnable resizeRunnable = null; 2198 if (dropTargetLayout != null) { 2199 // Move internally 2200 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2201 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2202 long container = hasMovedIntoHotseat ? 2203 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2204 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2205 int screen = (mTargetCell[0] < 0) ? 2206 mDragInfo.screen : indexOfChild(dropTargetLayout); 2207 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2208 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2209 // First we find the cell nearest to point at which the item is 2210 // dropped, without any consideration to whether there is an item there. 2211 2212 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2213 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2214 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2215 mDragViewVisualCenter[1], mTargetCell); 2216 2217 // If the item being dropped is a shortcut and the nearest drop 2218 // cell also contains a shortcut, then create a folder with the two shortcuts. 2219 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2220 dropTargetLayout, mTargetCell, distance, false, d.dragView, null)) { 2221 return; 2222 } 2223 2224 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, 2225 distance, d, false)) { 2226 return; 2227 } 2228 2229 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2230 // we need to find the nearest cell location that is vacant 2231 ItemInfo item = (ItemInfo) d.dragInfo; 2232 int minSpanX = item.spanX; 2233 int minSpanY = item.spanY; 2234 if (item.minSpanX > 0 && item.minSpanY > 0) { 2235 minSpanX = item.minSpanX; 2236 minSpanY = item.minSpanY; 2237 } 2238 2239 int[] resultSpan = new int[2]; 2240 mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], 2241 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, cell, 2242 mTargetCell, resultSpan, CellLayout.MODE_ON_DROP); 2243 2244 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2245 2246 // if the widget resizes on drop 2247 if (foundCell && (cell instanceof AppWidgetHostView) && 2248 (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY)) { 2249 resizeOnDrop = true; 2250 item.spanX = resultSpan[0]; 2251 item.spanY = resultSpan[1]; 2252 AppWidgetHostView awhv = (AppWidgetHostView) cell; 2253 AppWidgetResizeFrame.updateWidgetSizeRanges(awhv, mLauncher, resultSpan[0], 2254 resultSpan[1]); 2255 } 2256 2257 if (mCurrentPage != screen && !hasMovedIntoHotseat) { 2258 snapScreen = screen; 2259 snapToPage(screen); 2260 } 2261 2262 if (foundCell) { 2263 final ItemInfo info = (ItemInfo) cell.getTag(); 2264 if (hasMovedLayouts) { 2265 // Reparent the view 2266 getParentCellLayoutForView(cell).removeView(cell); 2267 addInScreen(cell, container, screen, mTargetCell[0], mTargetCell[1], 2268 info.spanX, info.spanY); 2269 } 2270 2271 // update the item's position after drop 2272 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2273 lp.cellX = lp.tmpCellX = mTargetCell[0]; 2274 lp.cellY = lp.tmpCellY = mTargetCell[1]; 2275 lp.cellHSpan = item.spanX; 2276 lp.cellVSpan = item.spanY; 2277 lp.isLockedToGrid = true; 2278 cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screen, 2279 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2280 2281 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2282 cell instanceof LauncherAppWidgetHostView) { 2283 final CellLayout cellLayout = dropTargetLayout; 2284 // We post this call so that the widget has a chance to be placed 2285 // in its final location 2286 2287 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2288 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2289 if (pinfo != null && 2290 pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2291 final Runnable addResizeFrame = new Runnable() { 2292 public void run() { 2293 DragLayer dragLayer = mLauncher.getDragLayer(); 2294 dragLayer.addResizeFrame(info, hostView, cellLayout); 2295 } 2296 }; 2297 resizeRunnable = (new Runnable() { 2298 public void run() { 2299 if (!isPageMoving()) { 2300 addResizeFrame.run(); 2301 } else { 2302 mDelayedResizeRunnable = addResizeFrame; 2303 } 2304 } 2305 }); 2306 } 2307 } 2308 2309 LauncherModel.moveItemInDatabase(mLauncher, info, container, screen, lp.cellX, 2310 lp.cellY); 2311 } else { 2312 // If we can't find a drop location, we return the item to its original position 2313 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2314 mTargetCell[0] = lp.cellX; 2315 mTargetCell[1] = lp.cellY; 2316 CellLayout layout = (CellLayout) cell.getParent().getParent(); 2317 layout.markCellsAsOccupiedForView(cell); 2318 } 2319 } 2320 2321 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2322 final Runnable finalResizeRunnable = resizeRunnable; 2323 // Prepare it to be animated into its new position 2324 // This must be called after the view has been re-parented 2325 final Runnable onCompleteRunnable = new Runnable() { 2326 @Override 2327 public void run() { 2328 mAnimatingViewIntoPlace = false; 2329 updateChildrenLayersEnabled(false); 2330 if (finalResizeRunnable != null) { 2331 finalResizeRunnable.run(); 2332 } 2333 } 2334 }; 2335 mAnimatingViewIntoPlace = true; 2336 if (d.dragView.hasDrawn()) { 2337 final ItemInfo info = (ItemInfo) cell.getTag(); 2338 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET) { 2339 int animationType = resizeOnDrop ? ANIMATE_INTO_POSITION_AND_RESIZE : 2340 ANIMATE_INTO_POSITION_AND_DISAPPEAR; 2341 animateWidgetDrop(info, parent, d.dragView, 2342 onCompleteRunnable, animationType, cell, false); 2343 } else { 2344 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2345 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2346 onCompleteRunnable, this); 2347 } 2348 } else { 2349 d.deferDragViewCleanupPostAnimation = false; 2350 cell.setVisibility(VISIBLE); 2351 } 2352 parent.onDropChild(cell); 2353 } 2354 } 2355 2356 public void setFinalScrollForPageChange(int screen) { 2357 if (screen >= 0) { 2358 mSavedScrollX = getScrollX(); 2359 CellLayout cl = (CellLayout) getChildAt(screen); 2360 mSavedTranslationX = cl.getTranslationX(); 2361 mSavedRotationY = cl.getRotationY(); 2362 final int newX = getChildOffset(screen) - getRelativeChildOffset(screen); 2363 setScrollX(newX); 2364 cl.setTranslationX(0f); 2365 cl.setRotationY(0f); 2366 } 2367 } 2368 2369 public void resetFinalScrollForPageChange(int screen) { 2370 if (screen >= 0) { 2371 CellLayout cl = (CellLayout) getChildAt(screen); 2372 setScrollX(mSavedScrollX); 2373 cl.setTranslationX(mSavedTranslationX); 2374 cl.setRotationY(mSavedRotationY); 2375 } 2376 } 2377 2378 public void getViewLocationRelativeToSelf(View v, int[] location) { 2379 getLocationInWindow(location); 2380 int x = location[0]; 2381 int y = location[1]; 2382 2383 v.getLocationInWindow(location); 2384 int vX = location[0]; 2385 int vY = location[1]; 2386 2387 location[0] = vX - x; 2388 location[1] = vY - y; 2389 } 2390 2391 public void onDragEnter(DragObject d) { 2392 mDragEnforcer.onDragEnter(); 2393 mCreateUserFolderOnDrop = false; 2394 mAddToExistingFolderOnDrop = false; 2395 2396 mDropToLayout = null; 2397 CellLayout layout = getCurrentDropLayout(); 2398 setCurrentDropLayout(layout); 2399 setCurrentDragOverlappingLayout(layout); 2400 2401 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2402 // don't need to show the outlines 2403 if (LauncherAppState.isScreenLarge()) { 2404 showOutlines(); 2405 } 2406 } 2407 2408 static Rect getCellLayoutMetrics(Launcher launcher, int orientation) { 2409 Resources res = launcher.getResources(); 2410 Display display = launcher.getWindowManager().getDefaultDisplay(); 2411 Point smallestSize = new Point(); 2412 Point largestSize = new Point(); 2413 display.getCurrentSizeRange(smallestSize, largestSize); 2414 if (orientation == CellLayout.LANDSCAPE) { 2415 if (mLandscapeCellLayoutMetrics == null) { 2416 int paddingLeft = res.getDimensionPixelSize(R.dimen.workspace_left_padding_land); 2417 int paddingRight = res.getDimensionPixelSize(R.dimen.workspace_right_padding_land); 2418 int paddingTop = res.getDimensionPixelSize(R.dimen.workspace_top_padding_land); 2419 int paddingBottom = res.getDimensionPixelSize(R.dimen.workspace_bottom_padding_land); 2420 int width = largestSize.x - paddingLeft - paddingRight; 2421 int height = smallestSize.y - paddingTop - paddingBottom; 2422 mLandscapeCellLayoutMetrics = new Rect(); 2423 CellLayout.getMetrics(mLandscapeCellLayoutMetrics, res, 2424 width, height, LauncherModel.getCellCountX(), LauncherModel.getCellCountY(), 2425 orientation); 2426 } 2427 return mLandscapeCellLayoutMetrics; 2428 } else if (orientation == CellLayout.PORTRAIT) { 2429 if (mPortraitCellLayoutMetrics == null) { 2430 int paddingLeft = res.getDimensionPixelSize(R.dimen.workspace_left_padding_land); 2431 int paddingRight = res.getDimensionPixelSize(R.dimen.workspace_right_padding_land); 2432 int paddingTop = res.getDimensionPixelSize(R.dimen.workspace_top_padding_land); 2433 int paddingBottom = res.getDimensionPixelSize(R.dimen.workspace_bottom_padding_land); 2434 int width = smallestSize.x - paddingLeft - paddingRight; 2435 int height = largestSize.y - paddingTop - paddingBottom; 2436 mPortraitCellLayoutMetrics = new Rect(); 2437 CellLayout.getMetrics(mPortraitCellLayoutMetrics, res, 2438 width, height, LauncherModel.getCellCountX(), LauncherModel.getCellCountY(), 2439 orientation); 2440 } 2441 return mPortraitCellLayoutMetrics; 2442 } 2443 return null; 2444 } 2445 2446 public void onDragExit(DragObject d) { 2447 mDragEnforcer.onDragExit(); 2448 2449 // Here we store the final page that will be dropped to, if the workspace in fact 2450 // receives the drop 2451 if (mInScrollArea) { 2452 if (isPageMoving()) { 2453 // If the user drops while the page is scrolling, we should use that page as the 2454 // destination instead of the page that is being hovered over. 2455 mDropToLayout = (CellLayout) getPageAt(getNextPage()); 2456 } else { 2457 mDropToLayout = mDragOverlappingLayout; 2458 } 2459 } else { 2460 mDropToLayout = mDragTargetLayout; 2461 } 2462 2463 if (mDragMode == DRAG_MODE_CREATE_FOLDER) { 2464 mCreateUserFolderOnDrop = true; 2465 } else if (mDragMode == DRAG_MODE_ADD_TO_FOLDER) { 2466 mAddToExistingFolderOnDrop = true; 2467 } 2468 2469 // Reset the scroll area and previous drag target 2470 onResetScrollArea(); 2471 setCurrentDropLayout(null); 2472 setCurrentDragOverlappingLayout(null); 2473 2474 mSpringLoadedDragController.cancel(); 2475 2476 if (!mIsPageMoving) { 2477 hideOutlines(); 2478 } 2479 } 2480 2481 void setCurrentDropLayout(CellLayout layout) { 2482 if (mDragTargetLayout != null) { 2483 mDragTargetLayout.revertTempState(); 2484 mDragTargetLayout.onDragExit(); 2485 } 2486 mDragTargetLayout = layout; 2487 if (mDragTargetLayout != null) { 2488 mDragTargetLayout.onDragEnter(); 2489 } 2490 cleanupReorder(true); 2491 cleanupFolderCreation(); 2492 setCurrentDropOverCell(-1, -1); 2493 } 2494 2495 void setCurrentDragOverlappingLayout(CellLayout layout) { 2496 if (mDragOverlappingLayout != null) { 2497 mDragOverlappingLayout.setIsDragOverlapping(false); 2498 } 2499 mDragOverlappingLayout = layout; 2500 if (mDragOverlappingLayout != null) { 2501 mDragOverlappingLayout.setIsDragOverlapping(true); 2502 } 2503 invalidate(); 2504 } 2505 2506 void setCurrentDropOverCell(int x, int y) { 2507 if (x != mDragOverX || y != mDragOverY) { 2508 mDragOverX = x; 2509 mDragOverY = y; 2510 setDragMode(DRAG_MODE_NONE); 2511 } 2512 } 2513 2514 void setDragMode(int dragMode) { 2515 if (dragMode != mDragMode) { 2516 if (dragMode == DRAG_MODE_NONE) { 2517 cleanupAddToFolder(); 2518 // We don't want to cancel the re-order alarm every time the target cell changes 2519 // as this feels to slow / unresponsive. 2520 cleanupReorder(false); 2521 cleanupFolderCreation(); 2522 } else if (dragMode == DRAG_MODE_ADD_TO_FOLDER) { 2523 cleanupReorder(true); 2524 cleanupFolderCreation(); 2525 } else if (dragMode == DRAG_MODE_CREATE_FOLDER) { 2526 cleanupAddToFolder(); 2527 cleanupReorder(true); 2528 } else if (dragMode == DRAG_MODE_REORDER) { 2529 cleanupAddToFolder(); 2530 cleanupFolderCreation(); 2531 } 2532 mDragMode = dragMode; 2533 } 2534 } 2535 2536 private void cleanupFolderCreation() { 2537 if (mDragFolderRingAnimator != null) { 2538 mDragFolderRingAnimator.animateToNaturalState(); 2539 } 2540 mFolderCreationAlarm.cancelAlarm(); 2541 } 2542 2543 private void cleanupAddToFolder() { 2544 if (mDragOverFolderIcon != null) { 2545 mDragOverFolderIcon.onDragExit(null); 2546 mDragOverFolderIcon = null; 2547 } 2548 } 2549 2550 private void cleanupReorder(boolean cancelAlarm) { 2551 // Any pending reorders are canceled 2552 if (cancelAlarm) { 2553 mReorderAlarm.cancelAlarm(); 2554 } 2555 mLastReorderX = -1; 2556 mLastReorderY = -1; 2557 } 2558 2559 public DropTarget getDropTargetDelegate(DragObject d) { 2560 return 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 */ 2569 void mapPointFromSelfToChild(View v, float[] xy) { 2570 mapPointFromSelfToChild(v, xy, null); 2571 } 2572 2573 /* 2574 * 2575 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2576 * coordinate space. The argument xy is modified with the return result. 2577 * 2578 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2579 * computing it itself; we use this to avoid redundant matrix inversions in 2580 * findMatchingPageForDragOver 2581 * 2582 */ 2583 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2584 if (cachedInverseMatrix == null) { 2585 v.getMatrix().invert(mTempInverseMatrix); 2586 cachedInverseMatrix = mTempInverseMatrix; 2587 } 2588 int scrollX = getScrollX(); 2589 if (mNextPage != INVALID_PAGE) { 2590 scrollX = mScroller.getFinalX(); 2591 } 2592 xy[0] = xy[0] + scrollX - v.getLeft(); 2593 xy[1] = xy[1] + getScrollY() - v.getTop(); 2594 cachedInverseMatrix.mapPoints(xy); 2595 } 2596 2597 2598 void mapPointFromSelfToHotseatLayout(Hotseat hotseat, float[] xy) { 2599 hotseat.getLayout().getMatrix().invert(mTempInverseMatrix); 2600 xy[0] = xy[0] - hotseat.getLeft() - hotseat.getLayout().getLeft(); 2601 xy[1] = xy[1] - hotseat.getTop() - hotseat.getLayout().getTop(); 2602 mTempInverseMatrix.mapPoints(xy); 2603 } 2604 2605 /* 2606 * 2607 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2608 * the parent View's coordinate space. The argument xy is modified with the return result. 2609 * 2610 */ 2611 void mapPointFromChildToSelf(View v, float[] xy) { 2612 v.getMatrix().mapPoints(xy); 2613 int scrollX = getScrollX(); 2614 if (mNextPage != INVALID_PAGE) { 2615 scrollX = mScroller.getFinalX(); 2616 } 2617 xy[0] -= (scrollX - v.getLeft()); 2618 xy[1] -= (getScrollY() - v.getTop()); 2619 } 2620 2621 static private float squaredDistance(float[] point1, float[] point2) { 2622 float distanceX = point1[0] - point2[0]; 2623 float distanceY = point2[1] - point2[1]; 2624 return distanceX * distanceX + distanceY * distanceY; 2625 } 2626 2627 /* 2628 * 2629 * Returns true if the passed CellLayout cl overlaps with dragView 2630 * 2631 */ 2632 boolean overlaps(CellLayout cl, DragView dragView, 2633 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2634 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2635 final float[] draggedItemTopLeft = mTempDragCoordinates; 2636 draggedItemTopLeft[0] = dragViewX; 2637 draggedItemTopLeft[1] = dragViewY; 2638 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2639 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2640 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2641 2642 // Transform the dragged item's top left coordinates 2643 // to the CellLayout's local coordinates 2644 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2645 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2646 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2647 2648 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2649 // Transform the dragged item's bottom right coordinates 2650 // to the CellLayout's local coordinates 2651 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2652 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2653 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2654 2655 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2656 float overlap = (overlapRegionRight - overlapRegionLeft) * 2657 (overlapRegionBottom - overlapRegionTop); 2658 if (overlap > 0) { 2659 return true; 2660 } 2661 } 2662 } 2663 return false; 2664 } 2665 2666 /* 2667 * 2668 * This method returns the CellLayout that is currently being dragged to. In order to drag 2669 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2670 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2671 * 2672 * Return null if no CellLayout is currently being dragged over 2673 * 2674 */ 2675 private CellLayout findMatchingPageForDragOver( 2676 DragView dragView, float originX, float originY, boolean exact) { 2677 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2678 // with the item being dragged and then choose the one that's closest to the touch point 2679 final int screenCount = getChildCount(); 2680 CellLayout bestMatchingScreen = null; 2681 float smallestDistSoFar = Float.MAX_VALUE; 2682 2683 for (int i = 0; i < screenCount; i++) { 2684 CellLayout cl = (CellLayout) getChildAt(i); 2685 2686 final float[] touchXy = {originX, originY}; 2687 // Transform the touch coordinates to the CellLayout's local coordinates 2688 // If the touch point is within the bounds of the cell layout, we can return immediately 2689 cl.getMatrix().invert(mTempInverseMatrix); 2690 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2691 2692 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2693 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2694 return cl; 2695 } 2696 2697 if (!exact) { 2698 // Get the center of the cell layout in screen coordinates 2699 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2700 cellLayoutCenter[0] = cl.getWidth()/2; 2701 cellLayoutCenter[1] = cl.getHeight()/2; 2702 mapPointFromChildToSelf(cl, cellLayoutCenter); 2703 2704 touchXy[0] = originX; 2705 touchXy[1] = originY; 2706 2707 // Calculate the distance between the center of the CellLayout 2708 // and the touch point 2709 float dist = squaredDistance(touchXy, cellLayoutCenter); 2710 2711 if (dist < smallestDistSoFar) { 2712 smallestDistSoFar = dist; 2713 bestMatchingScreen = cl; 2714 } 2715 } 2716 } 2717 return bestMatchingScreen; 2718 } 2719 2720 // This is used to compute the visual center of the dragView. This point is then 2721 // used to visualize drop locations and determine where to drop an item. The idea is that 2722 // the visual center represents the user's interpretation of where the item is, and hence 2723 // is the appropriate point to use when determining drop location. 2724 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2725 DragView dragView, float[] recycle) { 2726 float res[]; 2727 if (recycle == null) { 2728 res = new float[2]; 2729 } else { 2730 res = recycle; 2731 } 2732 2733 // First off, the drag view has been shifted in a way that is not represented in the 2734 // x and y values or the x/yOffsets. Here we account for that shift. 2735 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2736 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2737 2738 // These represent the visual top and left of drag view if a dragRect was provided. 2739 // If a dragRect was not provided, then they correspond to the actual view left and 2740 // top, as the dragRect is in that case taken to be the entire dragView. 2741 // R.dimen.dragViewOffsetY. 2742 int left = x - xOffset; 2743 int top = y - yOffset; 2744 2745 // In order to find the visual center, we shift by half the dragRect 2746 res[0] = left + dragView.getDragRegion().width() / 2; 2747 res[1] = top + dragView.getDragRegion().height() / 2; 2748 2749 return res; 2750 } 2751 2752 private boolean isDragWidget(DragObject d) { 2753 return (d.dragInfo instanceof LauncherAppWidgetInfo || 2754 d.dragInfo instanceof PendingAddWidgetInfo); 2755 } 2756 private boolean isExternalDragWidget(DragObject d) { 2757 return d.dragSource != this && isDragWidget(d); 2758 } 2759 2760 public void onDragOver(DragObject d) { 2761 // Skip drag over events while we are dragging over side pages 2762 if (mInScrollArea || mIsSwitchingState || mState == State.SMALL) return; 2763 2764 Rect r = new Rect(); 2765 CellLayout layout = null; 2766 ItemInfo item = (ItemInfo) d.dragInfo; 2767 2768 // Ensure that we have proper spans for the item that we are dropping 2769 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2770 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2771 d.dragView, mDragViewVisualCenter); 2772 2773 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2774 // Identify whether we have dragged over a side page 2775 if (isSmall()) { 2776 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 2777 mLauncher.getHotseat().getHitRect(r); 2778 if (r.contains(d.x, d.y)) { 2779 layout = mLauncher.getHotseat().getLayout(); 2780 } 2781 } 2782 if (layout == null) { 2783 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false); 2784 } 2785 if (layout != mDragTargetLayout) { 2786 2787 setCurrentDropLayout(layout); 2788 setCurrentDragOverlappingLayout(layout); 2789 2790 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 2791 if (isInSpringLoadedMode) { 2792 if (mLauncher.isHotseatLayout(layout)) { 2793 mSpringLoadedDragController.cancel(); 2794 } else { 2795 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2796 } 2797 } 2798 } 2799 } else { 2800 // Test to see if we are over the hotseat otherwise just use the current page 2801 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 2802 mLauncher.getHotseat().getHitRect(r); 2803 if (r.contains(d.x, d.y)) { 2804 layout = mLauncher.getHotseat().getLayout(); 2805 } 2806 } 2807 if (layout == null) { 2808 layout = getCurrentDropLayout(); 2809 } 2810 if (layout != mDragTargetLayout) { 2811 setCurrentDropLayout(layout); 2812 setCurrentDragOverlappingLayout(layout); 2813 } 2814 } 2815 2816 // Handle the drag over 2817 if (mDragTargetLayout != null) { 2818 // We want the point to be mapped to the dragTarget. 2819 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2820 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2821 } else { 2822 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2823 } 2824 2825 ItemInfo info = (ItemInfo) d.dragInfo; 2826 2827 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2828 (int) mDragViewVisualCenter[1], item.spanX, item.spanY, 2829 mDragTargetLayout, mTargetCell); 2830 2831 setCurrentDropOverCell(mTargetCell[0], mTargetCell[1]); 2832 2833 float targetCellDistance = mDragTargetLayout.getDistanceFromCell( 2834 mDragViewVisualCenter[0], mDragViewVisualCenter[1], mTargetCell); 2835 2836 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2837 mTargetCell[1]); 2838 2839 manageFolderFeedback(info, mDragTargetLayout, mTargetCell, 2840 targetCellDistance, dragOverView); 2841 2842 int minSpanX = item.spanX; 2843 int minSpanY = item.spanY; 2844 if (item.minSpanX > 0 && item.minSpanY > 0) { 2845 minSpanX = item.minSpanX; 2846 minSpanY = item.minSpanY; 2847 } 2848 2849 boolean nearestDropOccupied = mDragTargetLayout.isNearestDropLocationOccupied((int) 2850 mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], item.spanX, 2851 item.spanY, child, mTargetCell); 2852 2853 if (!nearestDropOccupied) { 2854 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2855 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2856 mTargetCell[0], mTargetCell[1], item.spanX, item.spanY, false, 2857 d.dragView.getDragVisualizeOffset(), d.dragView.getDragRegion()); 2858 } else if ((mDragMode == DRAG_MODE_NONE || mDragMode == DRAG_MODE_REORDER) 2859 && !mReorderAlarm.alarmPending() && (mLastReorderX != mTargetCell[0] || 2860 mLastReorderY != mTargetCell[1])) { 2861 2862 // Otherwise, if we aren't adding to or creating a folder and there's no pending 2863 // reorder, then we schedule a reorder 2864 ReorderAlarmListener listener = new ReorderAlarmListener(mDragViewVisualCenter, 2865 minSpanX, minSpanY, item.spanX, item.spanY, d.dragView, child); 2866 mReorderAlarm.setOnAlarmListener(listener); 2867 mReorderAlarm.setAlarm(REORDER_TIMEOUT); 2868 } 2869 2870 if (mDragMode == DRAG_MODE_CREATE_FOLDER || mDragMode == DRAG_MODE_ADD_TO_FOLDER || 2871 !nearestDropOccupied) { 2872 if (mDragTargetLayout != null) { 2873 mDragTargetLayout.revertTempState(); 2874 } 2875 } 2876 } 2877 } 2878 2879 private void manageFolderFeedback(ItemInfo info, CellLayout targetLayout, 2880 int[] targetCell, float distance, View dragOverView) { 2881 boolean userFolderPending = willCreateUserFolder(info, targetLayout, targetCell, distance, 2882 false); 2883 2884 if (mDragMode == DRAG_MODE_NONE && userFolderPending && 2885 !mFolderCreationAlarm.alarmPending()) { 2886 mFolderCreationAlarm.setOnAlarmListener(new 2887 FolderCreationAlarmListener(targetLayout, targetCell[0], targetCell[1])); 2888 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2889 return; 2890 } 2891 2892 boolean willAddToFolder = 2893 willAddToExistingUserFolder(info, targetLayout, targetCell, distance); 2894 2895 if (willAddToFolder && mDragMode == DRAG_MODE_NONE) { 2896 mDragOverFolderIcon = ((FolderIcon) dragOverView); 2897 mDragOverFolderIcon.onDragEnter(info); 2898 if (targetLayout != null) { 2899 targetLayout.clearDragOutlines(); 2900 } 2901 setDragMode(DRAG_MODE_ADD_TO_FOLDER); 2902 return; 2903 } 2904 2905 if (mDragMode == DRAG_MODE_ADD_TO_FOLDER && !willAddToFolder) { 2906 setDragMode(DRAG_MODE_NONE); 2907 } 2908 if (mDragMode == DRAG_MODE_CREATE_FOLDER && !userFolderPending) { 2909 setDragMode(DRAG_MODE_NONE); 2910 } 2911 2912 return; 2913 } 2914 2915 class FolderCreationAlarmListener implements OnAlarmListener { 2916 CellLayout layout; 2917 int cellX; 2918 int cellY; 2919 2920 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 2921 this.layout = layout; 2922 this.cellX = cellX; 2923 this.cellY = cellY; 2924 } 2925 2926 public void onAlarm(Alarm alarm) { 2927 if (mDragFolderRingAnimator == null) { 2928 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 2929 } 2930 mDragFolderRingAnimator.setCell(cellX, cellY); 2931 mDragFolderRingAnimator.setCellLayout(layout); 2932 mDragFolderRingAnimator.animateToAcceptState(); 2933 layout.showFolderAccept(mDragFolderRingAnimator); 2934 layout.clearDragOutlines(); 2935 setDragMode(DRAG_MODE_CREATE_FOLDER); 2936 } 2937 } 2938 2939 class ReorderAlarmListener implements OnAlarmListener { 2940 float[] dragViewCenter; 2941 int minSpanX, minSpanY, spanX, spanY; 2942 DragView dragView; 2943 View child; 2944 2945 public ReorderAlarmListener(float[] dragViewCenter, int minSpanX, int minSpanY, int spanX, 2946 int spanY, DragView dragView, View child) { 2947 this.dragViewCenter = dragViewCenter; 2948 this.minSpanX = minSpanX; 2949 this.minSpanY = minSpanY; 2950 this.spanX = spanX; 2951 this.spanY = spanY; 2952 this.child = child; 2953 this.dragView = dragView; 2954 } 2955 2956 public void onAlarm(Alarm alarm) { 2957 int[] resultSpan = new int[2]; 2958 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2959 (int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell); 2960 mLastReorderX = mTargetCell[0]; 2961 mLastReorderY = mTargetCell[1]; 2962 2963 mTargetCell = mDragTargetLayout.createArea((int) mDragViewVisualCenter[0], 2964 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2965 child, mTargetCell, resultSpan, CellLayout.MODE_DRAG_OVER); 2966 2967 if (mTargetCell[0] < 0 || mTargetCell[1] < 0) { 2968 mDragTargetLayout.revertTempState(); 2969 } else { 2970 setDragMode(DRAG_MODE_REORDER); 2971 } 2972 2973 boolean resize = resultSpan[0] != spanX || resultSpan[1] != spanY; 2974 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2975 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2976 mTargetCell[0], mTargetCell[1], resultSpan[0], resultSpan[1], resize, 2977 dragView.getDragVisualizeOffset(), dragView.getDragRegion()); 2978 } 2979 } 2980 2981 @Override 2982 public void getHitRect(Rect outRect) { 2983 // We want the workspace to have the whole area of the display (it will find the correct 2984 // cell layout to drop to in the existing drag/drop logic. 2985 outRect.set(0, 0, mDisplaySize.x, mDisplaySize.y); 2986 } 2987 2988 /** 2989 * Add the item specified by dragInfo to the given layout. 2990 * @return true if successful 2991 */ 2992 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2993 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2994 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2995 return true; 2996 } 2997 mLauncher.showOutOfSpaceMessage(mLauncher.isHotseatLayout(layout)); 2998 return false; 2999 } 3000 3001 private void onDropExternal(int[] touchXY, Object dragInfo, 3002 CellLayout cellLayout, boolean insertAtFirst) { 3003 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 3004 } 3005 3006 /** 3007 * Drop an item that didn't originate on one of the workspace screens. 3008 * It may have come from Launcher (e.g. from all apps or customize), or it may have 3009 * come from another app altogether. 3010 * 3011 * NOTE: This can also be called when we are outside of a drag event, when we want 3012 * to add an item to one of the workspace screens. 3013 */ 3014 private void onDropExternal(final int[] touchXY, final Object dragInfo, 3015 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 3016 final Runnable exitSpringLoadedRunnable = new Runnable() { 3017 @Override 3018 public void run() { 3019 mLauncher.exitSpringLoadedDragModeDelayed(true, false, null); 3020 } 3021 }; 3022 3023 ItemInfo info = (ItemInfo) dragInfo; 3024 int spanX = info.spanX; 3025 int spanY = info.spanY; 3026 if (mDragInfo != null) { 3027 spanX = mDragInfo.spanX; 3028 spanY = mDragInfo.spanY; 3029 } 3030 3031 final long container = mLauncher.isHotseatLayout(cellLayout) ? 3032 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 3033 LauncherSettings.Favorites.CONTAINER_DESKTOP; 3034 final int screen = indexOfChild(cellLayout); 3035 if (!mLauncher.isHotseatLayout(cellLayout) && screen != mCurrentPage 3036 && mState != State.SPRING_LOADED) { 3037 snapToPage(screen); 3038 } 3039 3040 if (info instanceof PendingAddItemInfo) { 3041 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 3042 3043 boolean findNearestVacantCell = true; 3044 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 3045 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3046 cellLayout, mTargetCell); 3047 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3048 mDragViewVisualCenter[1], mTargetCell); 3049 if (willCreateUserFolder((ItemInfo) d.dragInfo, cellLayout, mTargetCell, 3050 distance, true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 3051 cellLayout, mTargetCell, distance)) { 3052 findNearestVacantCell = false; 3053 } 3054 } 3055 3056 final ItemInfo item = (ItemInfo) d.dragInfo; 3057 boolean updateWidgetSize = false; 3058 if (findNearestVacantCell) { 3059 int minSpanX = item.spanX; 3060 int minSpanY = item.spanY; 3061 if (item.minSpanX > 0 && item.minSpanY > 0) { 3062 minSpanX = item.minSpanX; 3063 minSpanY = item.minSpanY; 3064 } 3065 int[] resultSpan = new int[2]; 3066 mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], 3067 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, info.spanX, info.spanY, 3068 null, mTargetCell, resultSpan, CellLayout.MODE_ON_DROP_EXTERNAL); 3069 3070 if (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY) { 3071 updateWidgetSize = true; 3072 } 3073 item.spanX = resultSpan[0]; 3074 item.spanY = resultSpan[1]; 3075 } 3076 3077 Runnable onAnimationCompleteRunnable = new Runnable() { 3078 @Override 3079 public void run() { 3080 // When dragging and dropping from customization tray, we deal with creating 3081 // widgets/shortcuts/folders in a slightly different way 3082 switch (pendingInfo.itemType) { 3083 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 3084 int span[] = new int[2]; 3085 span[0] = item.spanX; 3086 span[1] = item.spanY; 3087 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, 3088 container, screen, mTargetCell, span, null); 3089 break; 3090 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3091 mLauncher.processShortcutFromDrop(pendingInfo.componentName, 3092 container, screen, mTargetCell, null); 3093 break; 3094 default: 3095 throw new IllegalStateException("Unknown item type: " + 3096 pendingInfo.itemType); 3097 } 3098 } 3099 }; 3100 View finalView = pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET 3101 ? ((PendingAddWidgetInfo) pendingInfo).boundWidget : null; 3102 3103 if (finalView instanceof AppWidgetHostView && updateWidgetSize) { 3104 AppWidgetHostView awhv = (AppWidgetHostView) finalView; 3105 AppWidgetResizeFrame.updateWidgetSizeRanges(awhv, mLauncher, item.spanX, 3106 item.spanY); 3107 } 3108 3109 int animationStyle = ANIMATE_INTO_POSITION_AND_DISAPPEAR; 3110 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && 3111 ((PendingAddWidgetInfo) pendingInfo).info.configure != null) { 3112 animationStyle = ANIMATE_INTO_POSITION_AND_REMAIN; 3113 } 3114 animateWidgetDrop(info, cellLayout, d.dragView, onAnimationCompleteRunnable, 3115 animationStyle, finalView, true); 3116 } else { 3117 // This is for other drag/drop cases, like dragging from All Apps 3118 View view = null; 3119 3120 switch (info.itemType) { 3121 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 3122 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3123 if (info.container == NO_ID && info instanceof ApplicationInfo) { 3124 // Came from all apps -- make a copy 3125 info = new ShortcutInfo((ApplicationInfo) info); 3126 } 3127 view = mLauncher.createShortcut(R.layout.application, cellLayout, 3128 (ShortcutInfo) info); 3129 break; 3130 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 3131 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 3132 (FolderInfo) info, mIconCache); 3133 break; 3134 default: 3135 throw new IllegalStateException("Unknown item type: " + info.itemType); 3136 } 3137 3138 // First we find the cell nearest to point at which the item is 3139 // dropped, without any consideration to whether there is an item there. 3140 if (touchXY != null) { 3141 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3142 cellLayout, mTargetCell); 3143 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3144 mDragViewVisualCenter[1], mTargetCell); 3145 d.postAnimationRunnable = exitSpringLoadedRunnable; 3146 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, distance, 3147 true, d.dragView, d.postAnimationRunnable)) { 3148 return; 3149 } 3150 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, distance, d, 3151 true)) { 3152 return; 3153 } 3154 } 3155 3156 if (touchXY != null) { 3157 // when dragging and dropping, just find the closest free spot 3158 mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], 3159 (int) mDragViewVisualCenter[1], 1, 1, 1, 1, 3160 null, mTargetCell, null, CellLayout.MODE_ON_DROP_EXTERNAL); 3161 } else { 3162 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3163 } 3164 addInScreen(view, container, screen, mTargetCell[0], mTargetCell[1], info.spanX, 3165 info.spanY, insertAtFirst); 3166 cellLayout.onDropChild(view); 3167 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 3168 cellLayout.getShortcutsAndWidgets().measureChild(view); 3169 3170 3171 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, 3172 lp.cellX, lp.cellY); 3173 3174 if (d.dragView != null) { 3175 // We wrap the animation call in the temporary set and reset of the current 3176 // cellLayout to its final transform -- this means we animate the drag view to 3177 // the correct final location. 3178 setFinalTransitionTransform(cellLayout); 3179 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 3180 exitSpringLoadedRunnable); 3181 resetTransitionTransform(cellLayout); 3182 } 3183 } 3184 } 3185 3186 public Bitmap createWidgetBitmap(ItemInfo widgetInfo, View layout) { 3187 int[] unScaledSize = mLauncher.getWorkspace().estimateItemSize(widgetInfo.spanX, 3188 widgetInfo.spanY, widgetInfo, false); 3189 int visibility = layout.getVisibility(); 3190 layout.setVisibility(VISIBLE); 3191 3192 int width = MeasureSpec.makeMeasureSpec(unScaledSize[0], MeasureSpec.EXACTLY); 3193 int height = MeasureSpec.makeMeasureSpec(unScaledSize[1], MeasureSpec.EXACTLY); 3194 Bitmap b = Bitmap.createBitmap(unScaledSize[0], unScaledSize[1], 3195 Bitmap.Config.ARGB_8888); 3196 Canvas c = new Canvas(b); 3197 3198 layout.measure(width, height); 3199 layout.layout(0, 0, unScaledSize[0], unScaledSize[1]); 3200 layout.draw(c); 3201 c.setBitmap(null); 3202 layout.setVisibility(visibility); 3203 return b; 3204 } 3205 3206 private void getFinalPositionForDropAnimation(int[] loc, float[] scaleXY, 3207 DragView dragView, CellLayout layout, ItemInfo info, int[] targetCell, 3208 boolean external, boolean scale) { 3209 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 3210 // location and size on the home screen. 3211 int spanX = info.spanX; 3212 int spanY = info.spanY; 3213 3214 Rect r = estimateItemPosition(layout, info, targetCell[0], targetCell[1], spanX, spanY); 3215 loc[0] = r.left; 3216 loc[1] = r.top; 3217 3218 setFinalTransitionTransform(layout); 3219 float cellLayoutScale = 3220 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(layout, loc); 3221 resetTransitionTransform(layout); 3222 3223 float dragViewScaleX; 3224 float dragViewScaleY; 3225 if (scale) { 3226 dragViewScaleX = (1.0f * r.width()) / dragView.getMeasuredWidth(); 3227 dragViewScaleY = (1.0f * r.height()) / dragView.getMeasuredHeight(); 3228 } else { 3229 dragViewScaleX = 1f; 3230 dragViewScaleY = 1f; 3231 } 3232 3233 // The animation will scale the dragView about its center, so we need to center about 3234 // the final location. 3235 loc[0] -= (dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 3236 loc[1] -= (dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 3237 3238 scaleXY[0] = dragViewScaleX * cellLayoutScale; 3239 scaleXY[1] = dragViewScaleY * cellLayoutScale; 3240 } 3241 3242 public void animateWidgetDrop(ItemInfo info, CellLayout cellLayout, DragView dragView, 3243 final Runnable onCompleteRunnable, int animationType, final View finalView, 3244 boolean external) { 3245 Rect from = new Rect(); 3246 mLauncher.getDragLayer().getViewRectRelativeToSelf(dragView, from); 3247 3248 int[] finalPos = new int[2]; 3249 float scaleXY[] = new float[2]; 3250 boolean scalePreview = !(info instanceof PendingAddShortcutInfo); 3251 getFinalPositionForDropAnimation(finalPos, scaleXY, dragView, cellLayout, info, mTargetCell, 3252 external, scalePreview); 3253 3254 Resources res = mLauncher.getResources(); 3255 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration) - 200; 3256 3257 // In the case where we've prebound the widget, we remove it from the DragLayer 3258 if (finalView instanceof AppWidgetHostView && external) { 3259 Log.d(TAG, "6557954 Animate widget drop, final view is appWidgetHostView"); 3260 mLauncher.getDragLayer().removeView(finalView); 3261 } 3262 if ((animationType == ANIMATE_INTO_POSITION_AND_RESIZE || external) && finalView != null) { 3263 Bitmap crossFadeBitmap = createWidgetBitmap(info, finalView); 3264 dragView.setCrossFadeBitmap(crossFadeBitmap); 3265 dragView.crossFade((int) (duration * 0.8f)); 3266 } else if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && external) { 3267 scaleXY[0] = scaleXY[1] = Math.min(scaleXY[0], scaleXY[1]); 3268 } 3269 3270 DragLayer dragLayer = mLauncher.getDragLayer(); 3271 if (animationType == CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION) { 3272 mLauncher.getDragLayer().animateViewIntoPosition(dragView, finalPos, 0f, 0.1f, 0.1f, 3273 DragLayer.ANIMATION_END_DISAPPEAR, onCompleteRunnable, duration); 3274 } else { 3275 int endStyle; 3276 if (animationType == ANIMATE_INTO_POSITION_AND_REMAIN) { 3277 endStyle = DragLayer.ANIMATION_END_REMAIN_VISIBLE; 3278 } else { 3279 endStyle = DragLayer.ANIMATION_END_DISAPPEAR;; 3280 } 3281 3282 Runnable onComplete = new Runnable() { 3283 @Override 3284 public void run() { 3285 if (finalView != null) { 3286 finalView.setVisibility(VISIBLE); 3287 } 3288 if (onCompleteRunnable != null) { 3289 onCompleteRunnable.run(); 3290 } 3291 } 3292 }; 3293 dragLayer.animateViewIntoPosition(dragView, from.left, from.top, finalPos[0], 3294 finalPos[1], 1, 1, 1, scaleXY[0], scaleXY[1], onComplete, endStyle, 3295 duration, this); 3296 } 3297 } 3298 3299 public void setFinalTransitionTransform(CellLayout layout) { 3300 if (isSwitchingState()) { 3301 int index = indexOfChild(layout); 3302 mCurrentScaleX = layout.getScaleX(); 3303 mCurrentScaleY = layout.getScaleY(); 3304 mCurrentTranslationX = layout.getTranslationX(); 3305 mCurrentTranslationY = layout.getTranslationY(); 3306 mCurrentRotationY = layout.getRotationY(); 3307 layout.setScaleX(mNewScaleXs[index]); 3308 layout.setScaleY(mNewScaleYs[index]); 3309 layout.setTranslationX(mNewTranslationXs[index]); 3310 layout.setTranslationY(mNewTranslationYs[index]); 3311 layout.setRotationY(mNewRotationYs[index]); 3312 } 3313 } 3314 public void resetTransitionTransform(CellLayout layout) { 3315 if (isSwitchingState()) { 3316 mCurrentScaleX = layout.getScaleX(); 3317 mCurrentScaleY = layout.getScaleY(); 3318 mCurrentTranslationX = layout.getTranslationX(); 3319 mCurrentTranslationY = layout.getTranslationY(); 3320 mCurrentRotationY = layout.getRotationY(); 3321 layout.setScaleX(mCurrentScaleX); 3322 layout.setScaleY(mCurrentScaleY); 3323 layout.setTranslationX(mCurrentTranslationX); 3324 layout.setTranslationY(mCurrentTranslationY); 3325 layout.setRotationY(mCurrentRotationY); 3326 } 3327 } 3328 3329 /** 3330 * Return the current {@link CellLayout}, correctly picking the destination 3331 * screen while a scroll is in progress. 3332 */ 3333 public CellLayout getCurrentDropLayout() { 3334 return (CellLayout) getChildAt(getNextPage()); 3335 } 3336 3337 /** 3338 * Return the current CellInfo describing our current drag; this method exists 3339 * so that Launcher can sync this object with the correct info when the activity is created/ 3340 * destroyed 3341 * 3342 */ 3343 public CellLayout.CellInfo getDragInfo() { 3344 return mDragInfo; 3345 } 3346 3347 /** 3348 * Calculate the nearest cell where the given object would be dropped. 3349 * 3350 * pixelX and pixelY should be in the coordinate system of layout 3351 */ 3352 private int[] findNearestArea(int pixelX, int pixelY, 3353 int spanX, int spanY, CellLayout layout, int[] recycle) { 3354 return layout.findNearestArea( 3355 pixelX, pixelY, spanX, spanY, recycle); 3356 } 3357 3358 void setup(DragController dragController) { 3359 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3360 mDragController = dragController; 3361 3362 // hardware layers on children are enabled on startup, but should be disabled until 3363 // needed 3364 updateChildrenLayersEnabled(false); 3365 setWallpaperDimension(); 3366 } 3367 3368 /** 3369 * Called at the end of a drag which originated on the workspace. 3370 */ 3371 public void onDropCompleted(View target, DragObject d, boolean isFlingToDelete, 3372 boolean success) { 3373 if (success) { 3374 if (target != this) { 3375 if (mDragInfo != null) { 3376 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 3377 if (mDragInfo.cell instanceof DropTarget) { 3378 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 3379 } 3380 } 3381 } 3382 } else if (mDragInfo != null) { 3383 CellLayout cellLayout; 3384 if (mLauncher.isHotseatLayout(target)) { 3385 cellLayout = mLauncher.getHotseat().getLayout(); 3386 } else { 3387 cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3388 } 3389 cellLayout.onDropChild(mDragInfo.cell); 3390 } 3391 if (d.cancelled && mDragInfo.cell != null) { 3392 mDragInfo.cell.setVisibility(VISIBLE); 3393 } 3394 mDragOutline = null; 3395 mDragInfo = null; 3396 3397 // Hide the scrolling indicator after you pick up an item 3398 hideScrollingIndicator(false); 3399 } 3400 3401 void updateItemLocationsInDatabase(CellLayout cl) { 3402 int count = cl.getShortcutsAndWidgets().getChildCount(); 3403 3404 int screen = indexOfChild(cl); 3405 int container = Favorites.CONTAINER_DESKTOP; 3406 3407 if (mLauncher.isHotseatLayout(cl)) { 3408 screen = -1; 3409 container = Favorites.CONTAINER_HOTSEAT; 3410 } 3411 3412 for (int i = 0; i < count; i++) { 3413 View v = cl.getShortcutsAndWidgets().getChildAt(i); 3414 ItemInfo info = (ItemInfo) v.getTag(); 3415 // Null check required as the AllApps button doesn't have an item info 3416 if (info != null && info.requiresDbUpdate) { 3417 info.requiresDbUpdate = false; 3418 LauncherModel.modifyItemInDatabase(mLauncher, info, container, screen, info.cellX, 3419 info.cellY, info.spanX, info.spanY); 3420 } 3421 } 3422 } 3423 3424 ArrayList<ComponentName> stripDuplicateApps() { 3425 ArrayList<ComponentName> uniqueIntents = new ArrayList<ComponentName>(); 3426 stripDuplicateApps((CellLayout) mLauncher.getHotseat().getLayout(), uniqueIntents); 3427 int count = getChildCount(); 3428 for (int i = 0; i < count; i++) { 3429 CellLayout cl = (CellLayout) getChildAt(i); 3430 stripDuplicateApps(cl, uniqueIntents); 3431 } 3432 return uniqueIntents; 3433 } 3434 3435 void stripDuplicateApps(CellLayout cl, ArrayList<ComponentName> uniqueIntents) { 3436 int count = cl.getShortcutsAndWidgets().getChildCount(); 3437 3438 ArrayList<View> children = new ArrayList<View>(); 3439 for (int i = 0; i < count; i++) { 3440 View v = cl.getShortcutsAndWidgets().getChildAt(i); 3441 children.add(v); 3442 } 3443 3444 for (int i = 0; i < count; i++) { 3445 View v = children.get(i); 3446 ItemInfo info = (ItemInfo) v.getTag(); 3447 // Null check required as the AllApps button doesn't have an item info 3448 if (info instanceof ShortcutInfo) { 3449 ShortcutInfo si = (ShortcutInfo) info; 3450 ComponentName cn = si.intent.getComponent(); 3451 3452 if (!uniqueIntents.contains(cn)) { 3453 uniqueIntents.add(cn); 3454 } else { 3455 cl.removeViewInLayout(v); 3456 LauncherModel.deleteItemFromDatabase(mLauncher, si); 3457 } 3458 } 3459 if (v instanceof FolderIcon) { 3460 FolderIcon fi = (FolderIcon) v; 3461 ArrayList<View> items = fi.getFolder().getItemsInReadingOrder(); 3462 for (int j = 0; j < items.size(); j++) { 3463 if (items.get(j).getTag() instanceof ShortcutInfo) { 3464 ShortcutInfo si = (ShortcutInfo) items.get(j).getTag(); 3465 ComponentName cn = si.intent.getComponent(); 3466 3467 if (!uniqueIntents.contains(cn)) { 3468 uniqueIntents.add(cn); 3469 } else { 3470 fi.getFolderInfo().remove(si); 3471 LauncherModel.deleteItemFromDatabase(mLauncher, si); 3472 } 3473 } 3474 } 3475 } 3476 } 3477 } 3478 3479 void saveWorkspaceToDb() { 3480 saveWorkspaceScreenToDb((CellLayout) mLauncher.getHotseat().getLayout()); 3481 int count = getChildCount(); 3482 for (int i = 0; i < count; i++) { 3483 CellLayout cl = (CellLayout) getChildAt(i); 3484 saveWorkspaceScreenToDb(cl); 3485 } 3486 } 3487 3488 void saveWorkspaceScreenToDb(CellLayout cl) { 3489 int count = cl.getShortcutsAndWidgets().getChildCount(); 3490 3491 int screen = indexOfChild(cl); 3492 int container = Favorites.CONTAINER_DESKTOP; 3493 3494 if (mLauncher.isHotseatLayout(cl)) { 3495 screen = -1; 3496 container = Favorites.CONTAINER_HOTSEAT; 3497 } 3498 3499 for (int i = 0; i < count; i++) { 3500 View v = cl.getShortcutsAndWidgets().getChildAt(i); 3501 ItemInfo info = (ItemInfo) v.getTag(); 3502 // Null check required as the AllApps button doesn't have an item info 3503 if (info != null) { 3504 LauncherModel.addItemToDatabase(mLauncher, info, container, screen, info.cellX, 3505 info.cellY, false); 3506 } 3507 if (v instanceof FolderIcon) { 3508 FolderIcon fi = (FolderIcon) v; 3509 fi.getFolder().addItemLocationsInDatabase(); 3510 } 3511 } 3512 } 3513 3514 @Override 3515 public boolean supportsFlingToDelete() { 3516 return true; 3517 } 3518 3519 @Override 3520 public void onFlingToDelete(DragObject d, int x, int y, PointF vec) { 3521 // Do nothing 3522 } 3523 3524 @Override 3525 public void onFlingToDeleteCompleted() { 3526 // Do nothing 3527 } 3528 3529 public boolean isDropEnabled() { 3530 return true; 3531 } 3532 3533 @Override 3534 protected void onRestoreInstanceState(Parcelable state) { 3535 super.onRestoreInstanceState(state); 3536 Launcher.setScreen(mCurrentPage); 3537 } 3538 3539 @Override 3540 protected void dispatchRestoreInstanceState(SparseArray<Parcelable> container) { 3541 // We don't dispatch restoreInstanceState to our children using this code path. 3542 // Some pages will be restored immediately as their items are bound immediately, and 3543 // others we will need to wait until after their items are bound. 3544 mSavedStates = container; 3545 } 3546 3547 public void restoreInstanceStateForChild(int child) { 3548 if (mSavedStates != null) { 3549 mRestoredPages.add(child); 3550 CellLayout cl = (CellLayout) getChildAt(child); 3551 cl.restoreInstanceState(mSavedStates); 3552 } 3553 } 3554 3555 public void restoreInstanceStateForRemainingPages() { 3556 int count = getChildCount(); 3557 for (int i = 0; i < count; i++) { 3558 if (!mRestoredPages.contains(i)) { 3559 restoreInstanceStateForChild(i); 3560 } 3561 } 3562 mRestoredPages.clear(); 3563 } 3564 3565 @Override 3566 public void scrollLeft() { 3567 if (!isSmall() && !mIsSwitchingState) { 3568 super.scrollLeft(); 3569 } 3570 Folder openFolder = getOpenFolder(); 3571 if (openFolder != null) { 3572 openFolder.completeDragExit(); 3573 } 3574 } 3575 3576 @Override 3577 public void scrollRight() { 3578 if (!isSmall() && !mIsSwitchingState) { 3579 super.scrollRight(); 3580 } 3581 Folder openFolder = getOpenFolder(); 3582 if (openFolder != null) { 3583 openFolder.completeDragExit(); 3584 } 3585 } 3586 3587 @Override 3588 public boolean onEnterScrollArea(int x, int y, int direction) { 3589 // Ignore the scroll area if we are dragging over the hot seat 3590 boolean isPortrait = !LauncherAppState.isScreenLandscape(getContext()); 3591 if (mLauncher.getHotseat() != null && isPortrait) { 3592 Rect r = new Rect(); 3593 mLauncher.getHotseat().getHitRect(r); 3594 if (r.contains(x, y)) { 3595 return false; 3596 } 3597 } 3598 3599 boolean result = false; 3600 if (!isSmall() && !mIsSwitchingState) { 3601 mInScrollArea = true; 3602 3603 final int page = getNextPage() + 3604 (direction == DragController.SCROLL_LEFT ? -1 : 1); 3605 3606 // We always want to exit the current layout to ensure parity of enter / exit 3607 setCurrentDropLayout(null); 3608 3609 if (0 <= page && page < getChildCount()) { 3610 CellLayout layout = (CellLayout) getChildAt(page); 3611 setCurrentDragOverlappingLayout(layout); 3612 3613 // Workspace is responsible for drawing the edge glow on adjacent pages, 3614 // so we need to redraw the workspace when this may have changed. 3615 invalidate(); 3616 result = true; 3617 } 3618 } 3619 return result; 3620 } 3621 3622 @Override 3623 public boolean onExitScrollArea() { 3624 boolean result = false; 3625 if (mInScrollArea) { 3626 invalidate(); 3627 CellLayout layout = getCurrentDropLayout(); 3628 setCurrentDropLayout(layout); 3629 setCurrentDragOverlappingLayout(layout); 3630 3631 result = true; 3632 mInScrollArea = false; 3633 } 3634 return result; 3635 } 3636 3637 private void onResetScrollArea() { 3638 setCurrentDragOverlappingLayout(null); 3639 mInScrollArea = false; 3640 } 3641 3642 /** 3643 * Returns a specific CellLayout 3644 */ 3645 CellLayout getParentCellLayoutForView(View v) { 3646 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3647 for (CellLayout layout : layouts) { 3648 if (layout.getShortcutsAndWidgets().indexOfChild(v) > -1) { 3649 return layout; 3650 } 3651 } 3652 return null; 3653 } 3654 3655 /** 3656 * Returns a list of all the CellLayouts in the workspace. 3657 */ 3658 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3659 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3660 int screenCount = getChildCount(); 3661 for (int screen = 0; screen < screenCount; screen++) { 3662 layouts.add(((CellLayout) getChildAt(screen))); 3663 } 3664 if (mLauncher.getHotseat() != null) { 3665 layouts.add(mLauncher.getHotseat().getLayout()); 3666 } 3667 return layouts; 3668 } 3669 3670 /** 3671 * We should only use this to search for specific children. Do not use this method to modify 3672 * ShortcutsAndWidgetsContainer directly. Includes ShortcutAndWidgetContainers from 3673 * the hotseat and workspace pages 3674 */ 3675 ArrayList<ShortcutAndWidgetContainer> getAllShortcutAndWidgetContainers() { 3676 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3677 new ArrayList<ShortcutAndWidgetContainer>(); 3678 int screenCount = getChildCount(); 3679 for (int screen = 0; screen < screenCount; screen++) { 3680 childrenLayouts.add(((CellLayout) getChildAt(screen)).getShortcutsAndWidgets()); 3681 } 3682 if (mLauncher.getHotseat() != null) { 3683 childrenLayouts.add(mLauncher.getHotseat().getLayout().getShortcutsAndWidgets()); 3684 } 3685 return childrenLayouts; 3686 } 3687 3688 public Folder getFolderForTag(Object tag) { 3689 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3690 getAllShortcutAndWidgetContainers(); 3691 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3692 int count = layout.getChildCount(); 3693 for (int i = 0; i < count; i++) { 3694 View child = layout.getChildAt(i); 3695 if (child instanceof Folder) { 3696 Folder f = (Folder) child; 3697 if (f.getInfo() == tag && f.getInfo().opened) { 3698 return f; 3699 } 3700 } 3701 } 3702 } 3703 return null; 3704 } 3705 3706 public View getViewForTag(Object tag) { 3707 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3708 getAllShortcutAndWidgetContainers(); 3709 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3710 int count = layout.getChildCount(); 3711 for (int i = 0; i < count; i++) { 3712 View child = layout.getChildAt(i); 3713 if (child.getTag() == tag) { 3714 return child; 3715 } 3716 } 3717 } 3718 return null; 3719 } 3720 3721 void clearDropTargets() { 3722 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3723 getAllShortcutAndWidgetContainers(); 3724 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3725 int childCount = layout.getChildCount(); 3726 for (int j = 0; j < childCount; j++) { 3727 View v = layout.getChildAt(j); 3728 if (v instanceof DropTarget) { 3729 mDragController.removeDropTarget((DropTarget) v); 3730 } 3731 } 3732 } 3733 } 3734 3735 // Removes ALL items that match a given package name, this is usually called when a package 3736 // has been removed and we want to remove all components (widgets, shortcuts, apps) that 3737 // belong to that package. 3738 void removeItemsByPackageName(final ArrayList<String> packages) { 3739 HashSet<String> packageNames = new HashSet<String>(); 3740 packageNames.addAll(packages); 3741 3742 // Just create a hash table of all the specific components that this will affect 3743 HashSet<ComponentName> cns = new HashSet<ComponentName>(); 3744 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3745 for (CellLayout layoutParent : cellLayouts) { 3746 ViewGroup layout = layoutParent.getShortcutsAndWidgets(); 3747 int childCount = layout.getChildCount(); 3748 for (int i = 0; i < childCount; ++i) { 3749 View view = layout.getChildAt(i); 3750 Object tag = view.getTag(); 3751 3752 if (tag instanceof ShortcutInfo) { 3753 ShortcutInfo info = (ShortcutInfo) tag; 3754 ComponentName cn = info.intent.getComponent(); 3755 if ((cn != null) && packageNames.contains(cn.getPackageName())) { 3756 cns.add(cn); 3757 } 3758 } else if (tag instanceof FolderInfo) { 3759 FolderInfo info = (FolderInfo) tag; 3760 for (ShortcutInfo s : info.contents) { 3761 ComponentName cn = s.intent.getComponent(); 3762 if ((cn != null) && packageNames.contains(cn.getPackageName())) { 3763 cns.add(cn); 3764 } 3765 } 3766 } else if (tag instanceof LauncherAppWidgetInfo) { 3767 LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3768 ComponentName cn = info.providerName; 3769 if ((cn != null) && packageNames.contains(cn.getPackageName())) { 3770 cns.add(cn); 3771 } 3772 } 3773 } 3774 } 3775 3776 // Remove all the things 3777 removeItemsByComponentName(cns); 3778 } 3779 3780 // Removes items that match the application info specified, when applications are removed 3781 // as a part of an update, this is called to ensure that other widgets and application 3782 // shortcuts are not removed. 3783 void removeItemsByApplicationInfo(final ArrayList<ApplicationInfo> appInfos) { 3784 // Just create a hash table of all the specific components that this will affect 3785 HashSet<ComponentName> cns = new HashSet<ComponentName>(); 3786 for (ApplicationInfo info : appInfos) { 3787 cns.add(info.componentName); 3788 } 3789 3790 // Remove all the things 3791 removeItemsByComponentName(cns); 3792 } 3793 3794 void removeItemsByComponentName(final HashSet<ComponentName> componentNames) { 3795 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3796 for (final CellLayout layoutParent: cellLayouts) { 3797 final ViewGroup layout = layoutParent.getShortcutsAndWidgets(); 3798 3799 // Avoid ANRs by treating each screen separately 3800 post(new Runnable() { 3801 public void run() { 3802 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3803 childrenToRemove.clear(); 3804 3805 int childCount = layout.getChildCount(); 3806 for (int j = 0; j < childCount; j++) { 3807 final View view = layout.getChildAt(j); 3808 Object tag = view.getTag(); 3809 3810 if (tag instanceof ShortcutInfo) { 3811 final ShortcutInfo info = (ShortcutInfo) tag; 3812 final Intent intent = info.intent; 3813 final ComponentName name = intent.getComponent(); 3814 3815 if (name != null) { 3816 if (componentNames.contains(name)) { 3817 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3818 childrenToRemove.add(view); 3819 } 3820 } 3821 } else if (tag instanceof FolderInfo) { 3822 final FolderInfo info = (FolderInfo) tag; 3823 final ArrayList<ShortcutInfo> contents = info.contents; 3824 final int contentsCount = contents.size(); 3825 final ArrayList<ShortcutInfo> appsToRemoveFromFolder = 3826 new ArrayList<ShortcutInfo>(); 3827 3828 for (int k = 0; k < contentsCount; k++) { 3829 final ShortcutInfo appInfo = contents.get(k); 3830 final Intent intent = appInfo.intent; 3831 final ComponentName name = intent.getComponent(); 3832 3833 if (name != null) { 3834 if (componentNames.contains(name)) { 3835 appsToRemoveFromFolder.add(appInfo); 3836 } 3837 } 3838 } 3839 for (ShortcutInfo item: appsToRemoveFromFolder) { 3840 info.remove(item); 3841 LauncherModel.deleteItemFromDatabase(mLauncher, item); 3842 } 3843 } else if (tag instanceof LauncherAppWidgetInfo) { 3844 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3845 final ComponentName provider = info.providerName; 3846 if (provider != null) { 3847 if (componentNames.contains(provider)) { 3848 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3849 childrenToRemove.add(view); 3850 } 3851 } 3852 } 3853 } 3854 3855 childCount = childrenToRemove.size(); 3856 for (int j = 0; j < childCount; j++) { 3857 View child = childrenToRemove.get(j); 3858 // Note: We can not remove the view directly from CellLayoutChildren as this 3859 // does not re-mark the spaces as unoccupied. 3860 layoutParent.removeViewInLayout(child); 3861 if (child instanceof DropTarget) { 3862 mDragController.removeDropTarget((DropTarget)child); 3863 } 3864 } 3865 3866 if (childCount > 0) { 3867 layout.requestLayout(); 3868 layout.invalidate(); 3869 } 3870 } 3871 }); 3872 } 3873 3874 // Clean up new-apps animation list 3875 final Context context = getContext(); 3876 post(new Runnable() { 3877 @Override 3878 public void run() { 3879 String spKey = LauncherAppState.getSharedPreferencesKey(); 3880 SharedPreferences sp = context.getSharedPreferences(spKey, 3881 Context.MODE_PRIVATE); 3882 Set<String> newApps = sp.getStringSet(InstallShortcutReceiver.NEW_APPS_LIST_KEY, 3883 null); 3884 3885 // Remove all queued items that match the same package 3886 if (newApps != null) { 3887 synchronized (newApps) { 3888 Iterator<String> iter = newApps.iterator(); 3889 while (iter.hasNext()) { 3890 try { 3891 Intent intent = Intent.parseUri(iter.next(), 0); 3892 if (componentNames.contains(intent.getComponent())) { 3893 iter.remove(); 3894 } 3895 3896 // It is possible that we've queued an item to be loaded, yet it has 3897 // not been added to the workspace, so remove those items as well. 3898 ArrayList<ItemInfo> shortcuts; 3899 shortcuts = LauncherModel.getWorkspaceShortcutItemInfosWithIntent( 3900 intent); 3901 for (ItemInfo info : shortcuts) { 3902 LauncherModel.deleteItemFromDatabase(context, info); 3903 } 3904 } catch (URISyntaxException e) {} 3905 } 3906 } 3907 } 3908 } 3909 }); 3910 } 3911 3912 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3913 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = getAllShortcutAndWidgetContainers(); 3914 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3915 int childCount = layout.getChildCount(); 3916 for (int j = 0; j < childCount; j++) { 3917 final View view = layout.getChildAt(j); 3918 Object tag = view.getTag(); 3919 if (tag instanceof ShortcutInfo) { 3920 ShortcutInfo info = (ShortcutInfo) tag; 3921 // We need to check for ACTION_MAIN otherwise getComponent() might 3922 // return null for some shortcuts (for instance, for shortcuts to 3923 // web pages.) 3924 final Intent intent = info.intent; 3925 final ComponentName name = intent.getComponent(); 3926 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3927 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3928 final int appCount = apps.size(); 3929 for (int k = 0; k < appCount; k++) { 3930 ApplicationInfo app = apps.get(k); 3931 if (app.componentName.equals(name)) { 3932 BubbleTextView shortcut = (BubbleTextView) view; 3933 info.updateIcon(mIconCache); 3934 info.title = app.title.toString(); 3935 shortcut.applyFromShortcutInfo(info, mIconCache); 3936 } 3937 } 3938 } 3939 } 3940 } 3941 } 3942 } 3943 3944 void moveToDefaultScreen(boolean animate) { 3945 if (!isSmall()) { 3946 if (animate) { 3947 snapToPage(mDefaultPage); 3948 } else { 3949 setCurrentPage(mDefaultPage); 3950 } 3951 } 3952 getChildAt(mDefaultPage).requestFocus(); 3953 } 3954 3955 @Override 3956 public void syncPages() { 3957 } 3958 3959 @Override 3960 public void syncPageItems(int page, boolean immediate) { 3961 } 3962 3963 @Override 3964 protected String getCurrentPageDescription() { 3965 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 3966 return String.format(getContext().getString(R.string.workspace_scroll_format), 3967 page + 1, getChildCount()); 3968 } 3969 3970 public void getLocationInDragLayer(int[] loc) { 3971 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 3972 } 3973 3974 void setFadeForOverScroll(float fade) { 3975 if (!isScrollingIndicatorEnabled()) return; 3976 3977 mOverscrollFade = fade; 3978 float reducedFade = 0.5f + 0.5f * (1 - fade); 3979 final ViewGroup parent = (ViewGroup) getParent(); 3980 final ImageView qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3981 final ImageView dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3982 final View scrollIndicator = getScrollingIndicator(); 3983 3984 cancelScrollingIndicatorAnimations(); 3985 if (qsbDivider != null) qsbDivider.setAlpha(reducedFade); 3986 if (dockDivider != null) dockDivider.setAlpha(reducedFade); 3987 scrollIndicator.setAlpha(1 - fade); 3988 } 3989} 3990