Workspace.java revision 9e05a5ea951b4d5ffce324da8dd0656353306e6f
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.launcher2; 18 19import android.animation.Animator; 20import android.animation.AnimatorSet; 21import android.animation.ObjectAnimator; 22import android.animation.TimeInterpolator; 23import android.animation.ValueAnimator; 24import android.animation.ValueAnimator.AnimatorUpdateListener; 25import android.app.WallpaperManager; 26import android.appwidget.AppWidgetHostView; 27import android.appwidget.AppWidgetProviderInfo; 28import android.content.ComponentName; 29import android.content.Context; 30import android.content.Intent; 31import android.content.SharedPreferences; 32import android.content.res.Resources; 33import android.content.res.TypedArray; 34import android.graphics.Bitmap; 35import android.graphics.Canvas; 36import android.graphics.Matrix; 37import android.graphics.Point; 38import android.graphics.PointF; 39import android.graphics.Rect; 40import android.graphics.Region.Op; 41import android.graphics.drawable.Drawable; 42import android.os.Build; 43import android.os.IBinder; 44import android.os.Parcelable; 45import android.util.AttributeSet; 46import android.util.Log; 47import android.util.SparseArray; 48import android.view.Display; 49import android.view.MotionEvent; 50import android.view.View; 51import android.view.ViewGroup; 52import android.view.animation.DecelerateInterpolator; 53import android.widget.ImageView; 54import android.widget.TextView; 55 56import com.android.launcher.R; 57import com.android.launcher2.FolderIcon.FolderRingAnimator; 58import com.android.launcher2.LauncherSettings.Favorites; 59 60import java.net.URISyntaxException; 61import java.util.ArrayList; 62import java.util.HashSet; 63import java.util.Iterator; 64import java.util.Set; 65 66/** 67 * The workspace is a wide area with a wallpaper and a finite number of pages. 68 * Each page contains a number of icons, folders or widgets the user can 69 * interact with. A workspace is meant to be used with a fixed width only. 70 */ 71public class Workspace extends SmoothPagedView 72 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 73 DragController.DragListener, LauncherTransitionable, ViewGroup.OnHierarchyChangeListener { 74 private static final String TAG = "Launcher.Workspace"; 75 76 // Y rotation to apply to the workspace screens 77 private static final float WORKSPACE_OVERSCROLL_ROTATION = 24f; 78 79 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 80 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 81 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 82 83 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 84 private static final int ADJACENT_SCREEN_DROP_DURATION = 300; 85 private static final int FLING_THRESHOLD_VELOCITY = 500; 86 87 // These animators are used to fade the children's outlines 88 private ObjectAnimator mChildrenOutlineFadeInAnimation; 89 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 90 private float mChildrenOutlineAlpha = 0; 91 92 // These properties refer to the background protection gradient used for AllApps and Customize 93 private ValueAnimator mBackgroundFadeInAnimation; 94 private ValueAnimator mBackgroundFadeOutAnimation; 95 private Drawable mBackground; 96 boolean mDrawBackground = true; 97 private float mBackgroundAlpha = 0; 98 private float mOverScrollMaxBackgroundAlpha = 0.0f; 99 100 private float mWallpaperScrollRatio = 1.0f; 101 102 private final WallpaperManager mWallpaperManager; 103 private IBinder mWindowToken; 104 private static final float WALLPAPER_SCREENS_SPAN = 2f; 105 106 private int mDefaultPage; 107 108 /** 109 * CellInfo for the cell that is currently being dragged 110 */ 111 private CellLayout.CellInfo mDragInfo; 112 113 /** 114 * Target drop area calculated during last acceptDrop call. 115 */ 116 private int[] mTargetCell = new int[2]; 117 private int mDragOverX = -1; 118 private int mDragOverY = -1; 119 120 static Rect mLandscapeCellLayoutMetrics = null; 121 static Rect mPortraitCellLayoutMetrics = null; 122 123 /** 124 * The CellLayout that is currently being dragged over 125 */ 126 private CellLayout mDragTargetLayout = null; 127 /** 128 * The CellLayout that we will show as glowing 129 */ 130 private CellLayout mDragOverlappingLayout = null; 131 132 /** 133 * The CellLayout which will be dropped to 134 */ 135 private CellLayout mDropToLayout = null; 136 137 private Launcher mLauncher; 138 private IconCache mIconCache; 139 private DragController mDragController; 140 141 // These are temporary variables to prevent having to allocate a new object just to 142 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 143 private int[] mTempCell = new int[2]; 144 private int[] mTempEstimate = new int[2]; 145 private float[] mDragViewVisualCenter = new float[2]; 146 private float[] mTempDragCoordinates = new float[2]; 147 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 148 private float[] mTempDragBottomRightCoordinates = new float[2]; 149 private Matrix mTempInverseMatrix = new Matrix(); 150 151 private SpringLoadedDragController mSpringLoadedDragController; 152 private float mSpringLoadedShrinkFactor; 153 154 private static final int DEFAULT_CELL_COUNT_X = 4; 155 private static final int DEFAULT_CELL_COUNT_Y = 4; 156 157 // State variable that indicates whether the pages are small (ie when you're 158 // in all apps or customize mode) 159 160 enum State { NORMAL, SPRING_LOADED, SMALL }; 161 private State mState = State.NORMAL; 162 private boolean mIsSwitchingState = false; 163 164 boolean mAnimatingViewIntoPlace = false; 165 boolean mIsDragOccuring = false; 166 boolean mChildrenLayersEnabled = true; 167 168 /** Is the user is dragging an item near the edge of a page? */ 169 private boolean mInScrollArea = false; 170 171 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 172 private Bitmap mDragOutline = null; 173 private final Rect mTempRect = new Rect(); 174 private final int[] mTempXY = new int[2]; 175 private int[] mTempVisiblePagesRange = new int[2]; 176 private float mOverscrollFade = 0; 177 private boolean mOverscrollTransformsSet; 178 public static final int DRAG_BITMAP_PADDING = 2; 179 private boolean mWorkspaceFadeInAdjacentScreens; 180 181 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 182 int mWallpaperWidth; 183 int mWallpaperHeight; 184 WallpaperOffsetInterpolator mWallpaperOffset; 185 boolean mUpdateWallpaperOffsetImmediately = false; 186 private Runnable mDelayedResizeRunnable; 187 private Runnable mDelayedSnapToPageRunnable; 188 private Point mDisplaySize = new Point(); 189 private boolean mIsStaticWallpaper; 190 private int mWallpaperTravelWidth; 191 private int mSpringLoadedPageSpacing; 192 private int mCameraDistance; 193 194 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 195 private static final int FOLDER_CREATION_TIMEOUT = 0; 196 private static final int REORDER_TIMEOUT = 250; 197 private final Alarm mFolderCreationAlarm = new Alarm(); 198 private final Alarm mReorderAlarm = new Alarm(); 199 private FolderRingAnimator mDragFolderRingAnimator = null; 200 private FolderIcon mDragOverFolderIcon = null; 201 private boolean mCreateUserFolderOnDrop = false; 202 private boolean mAddToExistingFolderOnDrop = false; 203 private DropTarget.DragEnforcer mDragEnforcer; 204 private float mMaxDistanceForFolderCreation; 205 206 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 207 private float mXDown; 208 private float mYDown; 209 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 210 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 211 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 212 213 // Relating to the animation of items being dropped externally 214 public static final int ANIMATE_INTO_POSITION_AND_DISAPPEAR = 0; 215 public static final int ANIMATE_INTO_POSITION_AND_REMAIN = 1; 216 public static final int ANIMATE_INTO_POSITION_AND_RESIZE = 2; 217 public static final int COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION = 3; 218 public static final int CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION = 4; 219 220 // Related to dragging, folder creation and reordering 221 private static final int DRAG_MODE_NONE = 0; 222 private static final int DRAG_MODE_CREATE_FOLDER = 1; 223 private static final int DRAG_MODE_ADD_TO_FOLDER = 2; 224 private static final int DRAG_MODE_REORDER = 3; 225 private int mDragMode = DRAG_MODE_NONE; 226 private int mLastReorderX = -1; 227 private int mLastReorderY = -1; 228 229 private SparseArray<Parcelable> mSavedStates; 230 private final ArrayList<Integer> mRestoredPages = new ArrayList<Integer>(); 231 232 // These variables are used for storing the initial and final values during workspace animations 233 private int mSavedScrollX; 234 private float mSavedRotationY; 235 private float mSavedTranslationX; 236 private float mCurrentScaleX; 237 private float mCurrentScaleY; 238 private float mCurrentRotationY; 239 private float mCurrentTranslationX; 240 private float mCurrentTranslationY; 241 private float[] mOldTranslationXs; 242 private float[] mOldTranslationYs; 243 private float[] mOldScaleXs; 244 private float[] mOldScaleYs; 245 private float[] mOldBackgroundAlphas; 246 private float[] mOldAlphas; 247 private float[] mNewTranslationXs; 248 private float[] mNewTranslationYs; 249 private float[] mNewScaleXs; 250 private float[] mNewScaleYs; 251 private float[] mNewBackgroundAlphas; 252 private float[] mNewAlphas; 253 private float[] mNewRotationYs; 254 private float mTransitionProgress; 255 256 /** 257 * Used to inflate the Workspace from XML. 258 * 259 * @param context The application's context. 260 * @param attrs The attributes set containing the Workspace's customization values. 261 */ 262 public Workspace(Context context, AttributeSet attrs) { 263 this(context, attrs, 0); 264 } 265 266 /** 267 * Used to inflate the Workspace from XML. 268 * 269 * @param context The application's context. 270 * @param attrs The attributes set containing the Workspace's customization values. 271 * @param defStyle Unused. 272 */ 273 public Workspace(Context context, AttributeSet attrs, int defStyle) { 274 super(context, attrs, defStyle); 275 mContentIsRefreshable = false; 276 277 mDragEnforcer = new DropTarget.DragEnforcer(context); 278 // With workspace, data is available straight from the get-go 279 setDataIsReady(); 280 281 mLauncher = (Launcher) context; 282 final Resources res = getResources(); 283 mWorkspaceFadeInAdjacentScreens = res.getBoolean(R.bool.config_workspaceFadeAdjacentScreens); 284 mFadeInAdjacentScreens = false; 285 mWallpaperManager = WallpaperManager.getInstance(context); 286 287 int cellCountX = DEFAULT_CELL_COUNT_X; 288 int cellCountY = DEFAULT_CELL_COUNT_Y; 289 290 TypedArray a = context.obtainStyledAttributes(attrs, 291 R.styleable.Workspace, defStyle, 0); 292 293 if (LauncherApplication.isScreenLarge()) { 294 // Determine number of rows/columns dynamically 295 // TODO: This code currently fails on tablets with an aspect ratio < 1.3. 296 // Around that ratio we should make cells the same size in portrait and 297 // landscape 298 TypedArray actionBarSizeTypedArray = 299 context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize }); 300 final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); 301 302 Point minDims = new Point(); 303 Point maxDims = new Point(); 304 mLauncher.getWindowManager().getDefaultDisplay().getCurrentSizeRange(minDims, maxDims); 305 306 cellCountX = 1; 307 while (CellLayout.widthInPortrait(res, cellCountX + 1) <= minDims.x) { 308 cellCountX++; 309 } 310 311 cellCountY = 1; 312 while (actionBarHeight + CellLayout.heightInLandscape(res, cellCountY + 1) 313 <= minDims.y) { 314 cellCountY++; 315 } 316 } 317 318 mSpringLoadedShrinkFactor = 319 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 320 mSpringLoadedPageSpacing = 321 res.getDimensionPixelSize(R.dimen.workspace_spring_loaded_page_spacing); 322 mCameraDistance = res.getInteger(R.integer.config_cameraDistance); 323 324 // if the value is manually specified, use that instead 325 cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX); 326 cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY); 327 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 328 a.recycle(); 329 330 setOnHierarchyChangeListener(this); 331 332 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 333 setHapticFeedbackEnabled(false); 334 335 initWorkspace(); 336 337 // Disable multitouch across the workspace/all apps/customize tray 338 setMotionEventSplittingEnabled(true); 339 340 // Unless otherwise specified this view is important for accessibility. 341 if (getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 342 setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 343 } 344 } 345 346 // estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each 347 // dimension if unsuccessful 348 public int[] estimateItemSize(int hSpan, int vSpan, 349 ItemInfo itemInfo, boolean springLoaded) { 350 int[] size = new int[2]; 351 if (getChildCount() > 0) { 352 CellLayout cl = (CellLayout) mLauncher.getWorkspace().getChildAt(0); 353 Rect r = estimateItemPosition(cl, itemInfo, 0, 0, hSpan, vSpan); 354 size[0] = r.width(); 355 size[1] = r.height(); 356 if (springLoaded) { 357 size[0] *= mSpringLoadedShrinkFactor; 358 size[1] *= mSpringLoadedShrinkFactor; 359 } 360 return size; 361 } else { 362 size[0] = Integer.MAX_VALUE; 363 size[1] = Integer.MAX_VALUE; 364 return size; 365 } 366 } 367 public Rect estimateItemPosition(CellLayout cl, ItemInfo pendingInfo, 368 int hCell, int vCell, int hSpan, int vSpan) { 369 Rect r = new Rect(); 370 cl.cellToRect(hCell, vCell, hSpan, vSpan, r); 371 return r; 372 } 373 374 public void onDragStart(DragSource source, Object info, int dragAction) { 375 mIsDragOccuring = true; 376 updateChildrenLayersEnabled(false); 377 mLauncher.lockScreenOrientation(); 378 setChildrenBackgroundAlphaMultipliers(1f); 379 // Prevent any Un/InstallShortcutReceivers from updating the db while we are dragging 380 InstallShortcutReceiver.enableInstallQueue(); 381 UninstallShortcutReceiver.enableUninstallQueue(); 382 } 383 384 public void onDragEnd() { 385 mIsDragOccuring = false; 386 updateChildrenLayersEnabled(false); 387 mLauncher.unlockScreenOrientation(false); 388 389 // Re-enable any Un/InstallShortcutReceiver and now process any queued items 390 InstallShortcutReceiver.disableAndFlushInstallQueue(getContext()); 391 UninstallShortcutReceiver.disableAndFlushUninstallQueue(getContext()); 392 } 393 394 /** 395 * Initializes various states for this workspace. 396 */ 397 protected void initWorkspace() { 398 Context context = getContext(); 399 mCurrentPage = mDefaultPage; 400 Launcher.setScreen(mCurrentPage); 401 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 402 mIconCache = app.getIconCache(); 403 setWillNotDraw(false); 404 setChildrenDrawnWithCacheEnabled(true); 405 406 final Resources res = getResources(); 407 try { 408 mBackground = res.getDrawable(R.drawable.apps_customize_bg); 409 } catch (Resources.NotFoundException e) { 410 // In this case, we will skip drawing background protection 411 } 412 413 mWallpaperOffset = new WallpaperOffsetInterpolator(); 414 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 415 display.getSize(mDisplaySize); 416 mWallpaperTravelWidth = (int) (mDisplaySize.x * 417 wallpaperTravelToScreenWidthRatio(mDisplaySize.x, mDisplaySize.y)); 418 419 mMaxDistanceForFolderCreation = (0.55f * res.getDimensionPixelSize(R.dimen.app_icon_size)); 420 mFlingThresholdVelocity = (int) (FLING_THRESHOLD_VELOCITY * mDensity); 421 } 422 423 @Override 424 protected int getScrollMode() { 425 return SmoothPagedView.X_LARGE_MODE; 426 } 427 428 @Override 429 public void onChildViewAdded(View parent, View child) { 430 if (!(child instanceof CellLayout)) { 431 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 432 } 433 CellLayout cl = ((CellLayout) child); 434 cl.setOnInterceptTouchListener(this); 435 cl.setClickable(true); 436 cl.setContentDescription(getContext().getString( 437 R.string.workspace_description_format, getChildCount())); 438 } 439 440 @Override 441 public void onChildViewRemoved(View parent, View child) { 442 } 443 444 protected boolean shouldDrawChild(View child) { 445 final CellLayout cl = (CellLayout) child; 446 return super.shouldDrawChild(child) && 447 (cl.getShortcutsAndWidgets().getAlpha() > 0 || 448 cl.getBackgroundAlpha() > 0); 449 } 450 451 /** 452 * @return The open folder on the current screen, or null if there is none 453 */ 454 Folder getOpenFolder() { 455 DragLayer dragLayer = mLauncher.getDragLayer(); 456 int count = dragLayer.getChildCount(); 457 for (int i = 0; i < count; i++) { 458 View child = dragLayer.getChildAt(i); 459 if (child instanceof Folder) { 460 Folder folder = (Folder) child; 461 if (folder.getInfo().opened) 462 return folder; 463 } 464 } 465 return null; 466 } 467 468 boolean isTouchActive() { 469 return mTouchState != TOUCH_STATE_REST; 470 } 471 472 /** 473 * Adds the specified child in the specified screen. The position and dimension of 474 * the child are defined by x, y, spanX and spanY. 475 * 476 * @param child The child to add in one of the workspace's screens. 477 * @param screen The screen in which to add the child. 478 * @param x The X position of the child in the screen's grid. 479 * @param y The Y position of the child in the screen's grid. 480 * @param spanX The number of cells spanned horizontally by the child. 481 * @param spanY The number of cells spanned vertically by the child. 482 */ 483 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY) { 484 addInScreen(child, container, screen, x, y, spanX, spanY, false); 485 } 486 487 /** 488 * Adds the specified child in the specified screen. The position and dimension of 489 * the child are defined by x, y, spanX and spanY. 490 * 491 * @param child The child to add in one of the workspace's screens. 492 * @param screen The screen in which to add the child. 493 * @param x The X position of the child in the screen's grid. 494 * @param y The Y position of the child in the screen's grid. 495 * @param spanX The number of cells spanned horizontally by the child. 496 * @param spanY The number of cells spanned vertically by the child. 497 * @param insert When true, the child is inserted at the beginning of the children list. 498 */ 499 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY, 500 boolean insert) { 501 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 502 if (screen < 0 || screen >= getChildCount()) { 503 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 504 + " (was " + screen + "); skipping child"); 505 return; 506 } 507 } 508 509 final CellLayout layout; 510 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 511 layout = mLauncher.getHotseat().getLayout(); 512 child.setOnKeyListener(null); 513 514 // Hide folder title in the hotseat 515 if (child instanceof FolderIcon) { 516 ((FolderIcon) child).setTextVisible(false); 517 } 518 519 if (screen < 0) { 520 screen = mLauncher.getHotseat().getOrderInHotseat(x, y); 521 } else { 522 // Note: We do this to ensure that the hotseat is always laid out in the orientation 523 // of the hotseat in order regardless of which orientation they were added 524 x = mLauncher.getHotseat().getCellXFromOrder(screen); 525 y = mLauncher.getHotseat().getCellYFromOrder(screen); 526 } 527 } else { 528 // Show folder title if not in the hotseat 529 if (child instanceof FolderIcon) { 530 ((FolderIcon) child).setTextVisible(true); 531 } 532 533 layout = (CellLayout) getChildAt(screen); 534 child.setOnKeyListener(new IconKeyEventListener()); 535 } 536 537 LayoutParams genericLp = child.getLayoutParams(); 538 CellLayout.LayoutParams lp; 539 if (genericLp == null || !(genericLp instanceof CellLayout.LayoutParams)) { 540 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 541 } else { 542 lp = (CellLayout.LayoutParams) genericLp; 543 lp.cellX = x; 544 lp.cellY = y; 545 lp.cellHSpan = spanX; 546 lp.cellVSpan = spanY; 547 } 548 549 if (spanX < 0 && spanY < 0) { 550 lp.isLockedToGrid = false; 551 } 552 553 // Get the canonical child id to uniquely represent this view in this screen 554 int childId = LauncherModel.getCellLayoutChildId(container, screen, x, y, spanX, spanY); 555 boolean markCellsAsOccupied = !(child instanceof Folder); 556 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 557 // TODO: This branch occurs when the workspace is adding views 558 // outside of the defined grid 559 // maybe we should be deleting these items from the LauncherModel? 560 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 561 } 562 563 if (!(child instanceof Folder)) { 564 child.setHapticFeedbackEnabled(false); 565 child.setOnLongClickListener(mLongClickListener); 566 } 567 if (child instanceof DropTarget) { 568 mDragController.addDropTarget((DropTarget) child); 569 } 570 } 571 572 /** 573 * Check if the point (x, y) hits a given page. 574 */ 575 private boolean hitsPage(int index, float x, float y) { 576 final View page = getChildAt(index); 577 if (page != null) { 578 float[] localXY = { x, y }; 579 mapPointFromSelfToChild(page, localXY); 580 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 581 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 582 } 583 return false; 584 } 585 586 @Override 587 protected boolean hitsPreviousPage(float x, float y) { 588 // mNextPage is set to INVALID_PAGE whenever we are stationary. 589 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 590 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 591 592 // Only allow tap to next page on large devices, where there's significant margin outside 593 // the active workspace 594 return LauncherApplication.isScreenLarge() && hitsPage(current - 1, x, y); 595 } 596 597 @Override 598 protected boolean hitsNextPage(float x, float y) { 599 // mNextPage is set to INVALID_PAGE whenever we are stationary. 600 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 601 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 602 603 // Only allow tap to next page on large devices, where there's significant margin outside 604 // the active workspace 605 return LauncherApplication.isScreenLarge() && hitsPage(current + 1, x, y); 606 } 607 608 /** 609 * Called directly from a CellLayout (not by the framework), after we've been added as a 610 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 611 * that it should intercept touch events, which is not something that is normally supported. 612 */ 613 @Override 614 public boolean onTouch(View v, MotionEvent event) { 615 return (isSmall() || !isFinishedSwitchingState()); 616 } 617 618 public boolean isSwitchingState() { 619 return mIsSwitchingState; 620 } 621 622 /** This differs from isSwitchingState in that we take into account how far the transition 623 * has completed. */ 624 public boolean isFinishedSwitchingState() { 625 return !mIsSwitchingState || (mTransitionProgress > 0.5f); 626 } 627 628 protected void onWindowVisibilityChanged (int visibility) { 629 mLauncher.onWindowVisibilityChanged(visibility); 630 } 631 632 @Override 633 public boolean dispatchUnhandledMove(View focused, int direction) { 634 if (isSmall() || !isFinishedSwitchingState()) { 635 // when the home screens are shrunken, shouldn't allow side-scrolling 636 return false; 637 } 638 return super.dispatchUnhandledMove(focused, direction); 639 } 640 641 @Override 642 public boolean onInterceptTouchEvent(MotionEvent ev) { 643 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 644 case MotionEvent.ACTION_DOWN: 645 mXDown = ev.getX(); 646 mYDown = ev.getY(); 647 break; 648 case MotionEvent.ACTION_POINTER_UP: 649 case MotionEvent.ACTION_UP: 650 if (mTouchState == TOUCH_STATE_REST) { 651 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 652 if (!currentPage.lastDownOnOccupiedCell()) { 653 onWallpaperTap(ev); 654 } 655 } 656 } 657 return super.onInterceptTouchEvent(ev); 658 } 659 660 protected void reinflateWidgetsIfNecessary() { 661 final int clCount = getChildCount(); 662 for (int i = 0; i < clCount; i++) { 663 CellLayout cl = (CellLayout) getChildAt(i); 664 ShortcutAndWidgetContainer swc = cl.getShortcutsAndWidgets(); 665 final int itemCount = swc.getChildCount(); 666 for (int j = 0; j < itemCount; j++) { 667 View v = swc.getChildAt(j); 668 669 if (v.getTag() instanceof LauncherAppWidgetInfo) { 670 LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) v.getTag(); 671 LauncherAppWidgetHostView lahv = (LauncherAppWidgetHostView) info.hostView; 672 if (lahv != null && lahv.orientationChangedSincedInflation()) { 673 mLauncher.removeAppWidget(info); 674 // Remove the current widget which is inflated with the wrong orientation 675 cl.removeView(lahv); 676 mLauncher.bindAppWidget(info); 677 } 678 } 679 } 680 } 681 } 682 683 @Override 684 protected void determineScrollingStart(MotionEvent ev) { 685 if (isSmall()) return; 686 if (!isFinishedSwitchingState()) return; 687 688 float deltaX = Math.abs(ev.getX() - mXDown); 689 float deltaY = Math.abs(ev.getY() - mYDown); 690 691 if (Float.compare(deltaX, 0f) == 0) return; 692 693 float slope = deltaY / deltaX; 694 float theta = (float) Math.atan(slope); 695 696 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 697 cancelCurrentPageLongPress(); 698 } 699 700 if (theta > MAX_SWIPE_ANGLE) { 701 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 702 return; 703 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 704 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 705 // increase the touch slop to make it harder to begin scrolling the workspace. This 706 // results in vertically scrolling widgets to more easily. The higher the angle, the 707 // more we increase touch slop. 708 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 709 float extraRatio = (float) 710 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 711 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 712 } else { 713 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 714 super.determineScrollingStart(ev); 715 } 716 } 717 718 protected void onPageBeginMoving() { 719 super.onPageBeginMoving(); 720 721 if (isHardwareAccelerated()) { 722 updateChildrenLayersEnabled(false); 723 } else { 724 if (mNextPage != INVALID_PAGE) { 725 // we're snapping to a particular screen 726 enableChildrenCache(mCurrentPage, mNextPage); 727 } else { 728 // this is when user is actively dragging a particular screen, they might 729 // swipe it either left or right (but we won't advance by more than one screen) 730 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 731 } 732 } 733 734 // Only show page outlines as we pan if we are on large screen 735 if (LauncherApplication.isScreenLarge()) { 736 showOutlines(); 737 mIsStaticWallpaper = mWallpaperManager.getWallpaperInfo() == null; 738 } 739 740 // If we are not fading in adjacent screens, we still need to restore the alpha in case the 741 // user scrolls while we are transitioning (should not affect dispatchDraw optimizations) 742 if (!mWorkspaceFadeInAdjacentScreens) { 743 for (int i = 0; i < getChildCount(); ++i) { 744 ((CellLayout) getPageAt(i)).setShortcutAndWidgetAlpha(1f); 745 } 746 } 747 748 // Show the scroll indicator as you pan the page 749 showScrollingIndicator(false); 750 } 751 752 protected void onPageEndMoving() { 753 super.onPageEndMoving(); 754 755 if (isHardwareAccelerated()) { 756 updateChildrenLayersEnabled(false); 757 } else { 758 clearChildrenCache(); 759 } 760 761 762 if (mDragController.isDragging()) { 763 if (isSmall()) { 764 // If we are in springloaded mode, then force an event to check if the current touch 765 // is under a new page (to scroll to) 766 mDragController.forceMoveEvent(); 767 } 768 } else { 769 // If we are not mid-dragging, hide the page outlines if we are on a large screen 770 if (LauncherApplication.isScreenLarge()) { 771 hideOutlines(); 772 } 773 774 // Hide the scroll indicator as you pan the page 775 if (!mDragController.isDragging()) { 776 hideScrollingIndicator(false); 777 } 778 } 779 mOverScrollMaxBackgroundAlpha = 0.0f; 780 781 if (mDelayedResizeRunnable != null) { 782 mDelayedResizeRunnable.run(); 783 mDelayedResizeRunnable = null; 784 } 785 786 if (mDelayedSnapToPageRunnable != null) { 787 mDelayedSnapToPageRunnable.run(); 788 mDelayedSnapToPageRunnable = null; 789 } 790 } 791 792 @Override 793 protected void notifyPageSwitchListener() { 794 super.notifyPageSwitchListener(); 795 Launcher.setScreen(mCurrentPage); 796 }; 797 798 // As a ratio of screen height, the total distance we want the parallax effect to span 799 // horizontally 800 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 801 float aspectRatio = width / (float) height; 802 803 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 804 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 805 // We will use these two data points to extrapolate how much the wallpaper parallax effect 806 // to span (ie travel) at any aspect ratio: 807 808 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 809 final float ASPECT_RATIO_PORTRAIT = 10/16f; 810 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 811 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 812 813 // To find out the desired width at different aspect ratios, we use the following two 814 // formulas, where the coefficient on x is the aspect ratio (width/height): 815 // (16/10)x + y = 1.5 816 // (10/16)x + y = 1.2 817 // We solve for x and y and end up with a final formula: 818 final float x = 819 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 820 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 821 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 822 return x * aspectRatio + y; 823 } 824 825 // The range of scroll values for Workspace 826 private int getScrollRange() { 827 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 828 } 829 830 protected void setWallpaperDimension() { 831 Point minDims = new Point(); 832 Point maxDims = new Point(); 833 mLauncher.getWindowManager().getDefaultDisplay().getCurrentSizeRange(minDims, maxDims); 834 835 final int maxDim = Math.max(maxDims.x, maxDims.y); 836 final int minDim = Math.min(minDims.x, minDims.y); 837 838 // We need to ensure that there is enough extra space in the wallpaper for the intended 839 // parallax effects 840 if (LauncherApplication.isScreenLarge()) { 841 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 842 mWallpaperHeight = maxDim; 843 } else { 844 mWallpaperWidth = Math.max((int) (minDim * WALLPAPER_SCREENS_SPAN), maxDim); 845 mWallpaperHeight = maxDim; 846 } 847 new Thread("setWallpaperDimension") { 848 public void run() { 849 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 850 } 851 }.start(); 852 } 853 854 private float wallpaperOffsetForCurrentScroll() { 855 // Set wallpaper offset steps (1 / (number of screens - 1)) 856 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f); 857 858 // For the purposes of computing the scrollRange and overScrollOffset, we assume 859 // that mLayoutScale is 1. This means that when we're in spring-loaded mode, 860 // there's no discrepancy between the wallpaper offset for a given page. 861 float layoutScale = mLayoutScale; 862 mLayoutScale = 1f; 863 int scrollRange = getScrollRange(); 864 865 // Again, we adjust the wallpaper offset to be consistent between values of mLayoutScale 866 float adjustedScrollX = Math.max(0, Math.min(getScrollX(), mMaxScrollX)); 867 adjustedScrollX *= mWallpaperScrollRatio; 868 mLayoutScale = layoutScale; 869 870 float scrollProgress = 871 adjustedScrollX / (float) scrollRange; 872 873 if (LauncherApplication.isScreenLarge() && mIsStaticWallpaper) { 874 // The wallpaper travel width is how far, from left to right, the wallpaper will move 875 // at this orientation. On tablets in portrait mode we don't move all the way to the 876 // edges of the wallpaper, or otherwise the parallax effect would be too strong. 877 int wallpaperTravelWidth = Math.min(mWallpaperTravelWidth, mWallpaperWidth); 878 879 float offsetInDips = wallpaperTravelWidth * scrollProgress + 880 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 881 float offset = offsetInDips / (float) mWallpaperWidth; 882 return offset; 883 } else { 884 return scrollProgress; 885 } 886 } 887 888 private void syncWallpaperOffsetWithScroll() { 889 final boolean enableWallpaperEffects = isHardwareAccelerated(); 890 if (enableWallpaperEffects) { 891 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 892 } 893 } 894 895 public void updateWallpaperOffsetImmediately() { 896 mUpdateWallpaperOffsetImmediately = true; 897 } 898 899 private void updateWallpaperOffsets() { 900 boolean updateNow = false; 901 boolean keepUpdating = true; 902 if (mUpdateWallpaperOffsetImmediately) { 903 updateNow = true; 904 keepUpdating = false; 905 mWallpaperOffset.jumpToFinal(); 906 mUpdateWallpaperOffsetImmediately = false; 907 } else { 908 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 909 } 910 if (updateNow) { 911 if (mWindowToken != null) { 912 mWallpaperManager.setWallpaperOffsets(mWindowToken, 913 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 914 } 915 } 916 if (keepUpdating) { 917 invalidate(); 918 } 919 } 920 921 @Override 922 protected void updateCurrentPageScroll() { 923 super.updateCurrentPageScroll(); 924 computeWallpaperScrollRatio(mCurrentPage); 925 } 926 927 @Override 928 protected void snapToPage(int whichPage) { 929 super.snapToPage(whichPage); 930 computeWallpaperScrollRatio(whichPage); 931 } 932 933 @Override 934 protected void snapToPage(int whichPage, int duration) { 935 super.snapToPage(whichPage, duration); 936 computeWallpaperScrollRatio(whichPage); 937 } 938 939 protected void snapToPage(int whichPage, Runnable r) { 940 if (mDelayedSnapToPageRunnable != null) { 941 mDelayedSnapToPageRunnable.run(); 942 } 943 mDelayedSnapToPageRunnable = r; 944 snapToPage(whichPage, SLOW_PAGE_SNAP_ANIMATION_DURATION); 945 } 946 947 private void computeWallpaperScrollRatio(int page) { 948 // Here, we determine what the desired scroll would be with and without a layout scale, 949 // and compute a ratio between the two. This allows us to adjust the wallpaper offset 950 // as though there is no layout scale. 951 float layoutScale = mLayoutScale; 952 int scaled = getChildOffset(page) - getRelativeChildOffset(page); 953 mLayoutScale = 1.0f; 954 float unscaled = getChildOffset(page) - getRelativeChildOffset(page); 955 mLayoutScale = layoutScale; 956 if (scaled > 0) { 957 mWallpaperScrollRatio = (1.0f * unscaled) / scaled; 958 } else { 959 mWallpaperScrollRatio = 1f; 960 } 961 } 962 963 class WallpaperOffsetInterpolator { 964 float mFinalHorizontalWallpaperOffset = 0.0f; 965 float mFinalVerticalWallpaperOffset = 0.5f; 966 float mHorizontalWallpaperOffset = 0.0f; 967 float mVerticalWallpaperOffset = 0.5f; 968 long mLastWallpaperOffsetUpdateTime; 969 boolean mIsMovingFast; 970 boolean mOverrideHorizontalCatchupConstant; 971 float mHorizontalCatchupConstant = 0.35f; 972 float mVerticalCatchupConstant = 0.35f; 973 974 public WallpaperOffsetInterpolator() { 975 } 976 977 public void setOverrideHorizontalCatchupConstant(boolean override) { 978 mOverrideHorizontalCatchupConstant = override; 979 } 980 981 public void setHorizontalCatchupConstant(float f) { 982 mHorizontalCatchupConstant = f; 983 } 984 985 public void setVerticalCatchupConstant(float f) { 986 mVerticalCatchupConstant = f; 987 } 988 989 public boolean computeScrollOffset() { 990 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 991 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 992 mIsMovingFast = false; 993 return false; 994 } 995 boolean isLandscape = mDisplaySize.x > mDisplaySize.y; 996 997 long currentTime = System.currentTimeMillis(); 998 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 999 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 1000 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 1001 1002 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 1003 if (!mIsMovingFast && xdiff > 0.07) { 1004 mIsMovingFast = true; 1005 } 1006 1007 float fractionToCatchUpIn1MsHorizontal; 1008 if (mOverrideHorizontalCatchupConstant) { 1009 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 1010 } else if (mIsMovingFast) { 1011 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 1012 } else { 1013 // slow 1014 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 1015 } 1016 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 1017 1018 fractionToCatchUpIn1MsHorizontal /= 33f; 1019 fractionToCatchUpIn1MsVertical /= 33f; 1020 1021 final float UPDATE_THRESHOLD = 0.00001f; 1022 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 1023 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 1024 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 1025 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 1026 1027 // Don't have any lag between workspace and wallpaper on non-large devices 1028 if (!LauncherApplication.isScreenLarge() || jumpToFinalValue) { 1029 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 1030 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 1031 } else { 1032 float percentToCatchUpVertical = 1033 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 1034 float percentToCatchUpHorizontal = 1035 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 1036 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 1037 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 1038 } 1039 1040 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 1041 return true; 1042 } 1043 1044 public float getCurrX() { 1045 return mHorizontalWallpaperOffset; 1046 } 1047 1048 public float getFinalX() { 1049 return mFinalHorizontalWallpaperOffset; 1050 } 1051 1052 public float getCurrY() { 1053 return mVerticalWallpaperOffset; 1054 } 1055 1056 public float getFinalY() { 1057 return mFinalVerticalWallpaperOffset; 1058 } 1059 1060 public void setFinalX(float x) { 1061 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 1062 } 1063 1064 public void setFinalY(float y) { 1065 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 1066 } 1067 1068 public void jumpToFinal() { 1069 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 1070 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 1071 } 1072 } 1073 1074 @Override 1075 public void computeScroll() { 1076 super.computeScroll(); 1077 syncWallpaperOffsetWithScroll(); 1078 } 1079 1080 void showOutlines() { 1081 if (!isSmall() && !mIsSwitchingState) { 1082 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1083 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1084 mChildrenOutlineFadeInAnimation = LauncherAnimUtils.ofFloat(this, "childrenOutlineAlpha", 1.0f); 1085 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 1086 mChildrenOutlineFadeInAnimation.start(); 1087 } 1088 } 1089 1090 void hideOutlines() { 1091 if (!isSmall() && !mIsSwitchingState) { 1092 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1093 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1094 mChildrenOutlineFadeOutAnimation = LauncherAnimUtils.ofFloat(this, "childrenOutlineAlpha", 0.0f); 1095 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 1096 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 1097 mChildrenOutlineFadeOutAnimation.start(); 1098 } 1099 } 1100 1101 public void showOutlinesTemporarily() { 1102 if (!mIsPageMoving && !isTouchActive()) { 1103 snapToPage(mCurrentPage); 1104 } 1105 } 1106 1107 public void setChildrenOutlineAlpha(float alpha) { 1108 mChildrenOutlineAlpha = alpha; 1109 for (int i = 0; i < getChildCount(); i++) { 1110 CellLayout cl = (CellLayout) getChildAt(i); 1111 cl.setBackgroundAlpha(alpha); 1112 } 1113 } 1114 1115 public float getChildrenOutlineAlpha() { 1116 return mChildrenOutlineAlpha; 1117 } 1118 1119 void disableBackground() { 1120 mDrawBackground = false; 1121 } 1122 void enableBackground() { 1123 mDrawBackground = true; 1124 } 1125 1126 private void animateBackgroundGradient(float finalAlpha, boolean animated) { 1127 if (mBackground == null) return; 1128 if (mBackgroundFadeInAnimation != null) { 1129 mBackgroundFadeInAnimation.cancel(); 1130 mBackgroundFadeInAnimation = null; 1131 } 1132 if (mBackgroundFadeOutAnimation != null) { 1133 mBackgroundFadeOutAnimation.cancel(); 1134 mBackgroundFadeOutAnimation = null; 1135 } 1136 float startAlpha = getBackgroundAlpha(); 1137 if (finalAlpha != startAlpha) { 1138 if (animated) { 1139 mBackgroundFadeOutAnimation = LauncherAnimUtils.ofFloat(startAlpha, finalAlpha); 1140 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1141 public void onAnimationUpdate(ValueAnimator animation) { 1142 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1143 } 1144 }); 1145 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1146 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1147 mBackgroundFadeOutAnimation.start(); 1148 } else { 1149 setBackgroundAlpha(finalAlpha); 1150 } 1151 } 1152 } 1153 1154 public void setBackgroundAlpha(float alpha) { 1155 if (alpha != mBackgroundAlpha) { 1156 mBackgroundAlpha = alpha; 1157 invalidate(); 1158 } 1159 } 1160 1161 public float getBackgroundAlpha() { 1162 return mBackgroundAlpha; 1163 } 1164 1165 float backgroundAlphaInterpolator(float r) { 1166 float pivotA = 0.1f; 1167 float pivotB = 0.4f; 1168 if (r < pivotA) { 1169 return 0; 1170 } else if (r > pivotB) { 1171 return 1.0f; 1172 } else { 1173 return (r - pivotA)/(pivotB - pivotA); 1174 } 1175 } 1176 1177 float overScrollBackgroundAlphaInterpolator(float r) { 1178 float threshold = 0.08f; 1179 1180 if (r > mOverScrollMaxBackgroundAlpha) { 1181 mOverScrollMaxBackgroundAlpha = r; 1182 } else if (r < mOverScrollMaxBackgroundAlpha) { 1183 r = mOverScrollMaxBackgroundAlpha; 1184 } 1185 1186 return Math.min(r / threshold, 1.0f); 1187 } 1188 1189 private void updatePageAlphaValues(int screenCenter) { 1190 boolean isInOverscroll = mOverScrollX < 0 || mOverScrollX > mMaxScrollX; 1191 if (mWorkspaceFadeInAdjacentScreens && 1192 mState == State.NORMAL && 1193 !mIsSwitchingState && 1194 !isInOverscroll) { 1195 for (int i = 0; i < getChildCount(); i++) { 1196 CellLayout child = (CellLayout) getChildAt(i); 1197 if (child != null) { 1198 float scrollProgress = getScrollProgress(screenCenter, child, i); 1199 float alpha = 1 - Math.abs(scrollProgress); 1200 child.getShortcutsAndWidgets().setAlpha(alpha); 1201 if (!mIsDragOccuring) { 1202 child.setBackgroundAlphaMultiplier( 1203 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1204 } else { 1205 child.setBackgroundAlphaMultiplier(1f); 1206 } 1207 } 1208 } 1209 } 1210 } 1211 1212 private void setChildrenBackgroundAlphaMultipliers(float a) { 1213 for (int i = 0; i < getChildCount(); i++) { 1214 CellLayout child = (CellLayout) getChildAt(i); 1215 child.setBackgroundAlphaMultiplier(a); 1216 } 1217 } 1218 1219 @Override 1220 protected void screenScrolled(int screenCenter) { 1221 super.screenScrolled(screenCenter); 1222 1223 updatePageAlphaValues(screenCenter); 1224 enableHwLayersOnVisiblePages(); 1225 1226 if (mOverScrollX < 0 || mOverScrollX > mMaxScrollX) { 1227 int index = mOverScrollX < 0 ? 0 : getChildCount() - 1; 1228 CellLayout cl = (CellLayout) getChildAt(index); 1229 float scrollProgress = getScrollProgress(screenCenter, cl, index); 1230 cl.setOverScrollAmount(Math.abs(scrollProgress), index == 0); 1231 float rotation = - WORKSPACE_OVERSCROLL_ROTATION * scrollProgress; 1232 cl.setRotationY(rotation); 1233 setFadeForOverScroll(Math.abs(scrollProgress)); 1234 if (!mOverscrollTransformsSet) { 1235 mOverscrollTransformsSet = true; 1236 cl.setCameraDistance(mDensity * mCameraDistance); 1237 cl.setPivotX(cl.getMeasuredWidth() * (index == 0 ? 0.75f : 0.25f)); 1238 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1239 cl.setOverscrollTransformsDirty(true); 1240 } 1241 } else { 1242 if (mOverscrollFade != 0) { 1243 setFadeForOverScroll(0); 1244 } 1245 if (mOverscrollTransformsSet) { 1246 mOverscrollTransformsSet = false; 1247 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1248 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1249 } 1250 } 1251 } 1252 1253 @Override 1254 protected void overScroll(float amount) { 1255 acceleratedOverScroll(amount); 1256 } 1257 1258 protected void onAttachedToWindow() { 1259 super.onAttachedToWindow(); 1260 mWindowToken = getWindowToken(); 1261 computeScroll(); 1262 mDragController.setWindowToken(mWindowToken); 1263 } 1264 1265 protected void onDetachedFromWindow() { 1266 mWindowToken = null; 1267 } 1268 1269 @Override 1270 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1271 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1272 mUpdateWallpaperOffsetImmediately = true; 1273 } 1274 super.onLayout(changed, left, top, right, bottom); 1275 } 1276 1277 @Override 1278 protected void onDraw(Canvas canvas) { 1279 updateWallpaperOffsets(); 1280 1281 // Draw the background gradient if necessary 1282 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1283 int alpha = (int) (mBackgroundAlpha * 255); 1284 mBackground.setAlpha(alpha); 1285 mBackground.setBounds(getScrollX(), 0, getScrollX() + getMeasuredWidth(), 1286 getMeasuredHeight()); 1287 mBackground.draw(canvas); 1288 } 1289 1290 super.onDraw(canvas); 1291 1292 // Call back to LauncherModel to finish binding after the first draw 1293 post(new Runnable() { 1294 @Override 1295 public void run() { 1296 mLauncher.getModel().bindRemainingSynchronousPages(); 1297 } 1298 }); 1299 } 1300 1301 boolean isDrawingBackgroundGradient() { 1302 return (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground); 1303 } 1304 1305 @Override 1306 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1307 if (!mLauncher.isAllAppsVisible()) { 1308 final Folder openFolder = getOpenFolder(); 1309 if (openFolder != null) { 1310 return openFolder.requestFocus(direction, previouslyFocusedRect); 1311 } else { 1312 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1313 } 1314 } 1315 return false; 1316 } 1317 1318 @Override 1319 public int getDescendantFocusability() { 1320 if (isSmall()) { 1321 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1322 } 1323 return super.getDescendantFocusability(); 1324 } 1325 1326 @Override 1327 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1328 if (!mLauncher.isAllAppsVisible()) { 1329 final Folder openFolder = getOpenFolder(); 1330 if (openFolder != null) { 1331 openFolder.addFocusables(views, direction); 1332 } else { 1333 super.addFocusables(views, direction, focusableMode); 1334 } 1335 } 1336 } 1337 1338 public boolean isSmall() { 1339 return mState == State.SMALL || mState == State.SPRING_LOADED; 1340 } 1341 1342 void enableChildrenCache(int fromPage, int toPage) { 1343 if (fromPage > toPage) { 1344 final int temp = fromPage; 1345 fromPage = toPage; 1346 toPage = temp; 1347 } 1348 1349 final int screenCount = getChildCount(); 1350 1351 fromPage = Math.max(fromPage, 0); 1352 toPage = Math.min(toPage, screenCount - 1); 1353 1354 for (int i = fromPage; i <= toPage; i++) { 1355 final CellLayout layout = (CellLayout) getChildAt(i); 1356 layout.setChildrenDrawnWithCacheEnabled(true); 1357 layout.setChildrenDrawingCacheEnabled(true); 1358 } 1359 } 1360 1361 void clearChildrenCache() { 1362 final int screenCount = getChildCount(); 1363 for (int i = 0; i < screenCount; i++) { 1364 final CellLayout layout = (CellLayout) getChildAt(i); 1365 layout.setChildrenDrawnWithCacheEnabled(false); 1366 // In software mode, we don't want the items to continue to be drawn into bitmaps 1367 if (!isHardwareAccelerated()) { 1368 layout.setChildrenDrawingCacheEnabled(false); 1369 } 1370 } 1371 } 1372 1373 1374 private void updateChildrenLayersEnabled(boolean force) { 1375 boolean small = mState == State.SMALL || mIsSwitchingState; 1376 boolean enableChildrenLayers = force || small || mAnimatingViewIntoPlace || isPageMoving(); 1377 1378 if (enableChildrenLayers != mChildrenLayersEnabled) { 1379 mChildrenLayersEnabled = enableChildrenLayers; 1380 if (mChildrenLayersEnabled) { 1381 enableHwLayersOnVisiblePages(); 1382 } else { 1383 for (int i = 0; i < getPageCount(); i++) { 1384 final CellLayout cl = (CellLayout) getChildAt(i); 1385 cl.disableHardwareLayers(); 1386 } 1387 } 1388 } 1389 } 1390 1391 private void enableHwLayersOnVisiblePages() { 1392 if (mChildrenLayersEnabled) { 1393 final int screenCount = getChildCount(); 1394 getVisiblePages(mTempVisiblePagesRange); 1395 int leftScreen = mTempVisiblePagesRange[0]; 1396 int rightScreen = mTempVisiblePagesRange[1]; 1397 if (leftScreen == rightScreen) { 1398 // make sure we're caching at least two pages always 1399 if (rightScreen < screenCount - 1) { 1400 rightScreen++; 1401 } else if (leftScreen > 0) { 1402 leftScreen--; 1403 } 1404 } 1405 for (int i = 0; i < screenCount; i++) { 1406 final CellLayout layout = (CellLayout) getChildAt(i); 1407 if (!(leftScreen <= i && i <= rightScreen && shouldDrawChild(layout))) { 1408 layout.disableHardwareLayers(); 1409 } 1410 } 1411 for (int i = 0; i < screenCount; i++) { 1412 final CellLayout layout = (CellLayout) getChildAt(i); 1413 if (leftScreen <= i && i <= rightScreen && shouldDrawChild(layout)) { 1414 layout.enableHardwareLayers(); 1415 } 1416 } 1417 } 1418 } 1419 1420 public void buildPageHardwareLayers() { 1421 // force layers to be enabled just for the call to buildLayer 1422 updateChildrenLayersEnabled(true); 1423 if (getWindowToken() != null) { 1424 final int childCount = getChildCount(); 1425 for (int i = 0; i < childCount; i++) { 1426 CellLayout cl = (CellLayout) getChildAt(i); 1427 cl.buildHardwareLayer(); 1428 } 1429 } 1430 updateChildrenLayersEnabled(false); 1431 } 1432 1433 protected void onWallpaperTap(MotionEvent ev) { 1434 final int[] position = mTempCell; 1435 getLocationOnScreen(position); 1436 1437 int pointerIndex = ev.getActionIndex(); 1438 position[0] += (int) ev.getX(pointerIndex); 1439 position[1] += (int) ev.getY(pointerIndex); 1440 1441 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1442 ev.getAction() == MotionEvent.ACTION_UP 1443 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1444 position[0], position[1], 0, null); 1445 } 1446 1447 /* 1448 * This interpolator emulates the rate at which the perceived scale of an object changes 1449 * as its distance from a camera increases. When this interpolator is applied to a scale 1450 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1451 * from the camera. 1452 */ 1453 static class ZInterpolator implements TimeInterpolator { 1454 private float focalLength; 1455 1456 public ZInterpolator(float foc) { 1457 focalLength = foc; 1458 } 1459 1460 public float getInterpolation(float input) { 1461 return (1.0f - focalLength / (focalLength + input)) / 1462 (1.0f - focalLength / (focalLength + 1.0f)); 1463 } 1464 } 1465 1466 /* 1467 * The exact reverse of ZInterpolator. 1468 */ 1469 static class InverseZInterpolator implements TimeInterpolator { 1470 private ZInterpolator zInterpolator; 1471 public InverseZInterpolator(float foc) { 1472 zInterpolator = new ZInterpolator(foc); 1473 } 1474 public float getInterpolation(float input) { 1475 return 1 - zInterpolator.getInterpolation(1 - input); 1476 } 1477 } 1478 1479 /* 1480 * ZInterpolator compounded with an ease-out. 1481 */ 1482 static class ZoomOutInterpolator implements TimeInterpolator { 1483 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(0.75f); 1484 private final ZInterpolator zInterpolator = new ZInterpolator(0.13f); 1485 1486 public float getInterpolation(float input) { 1487 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1488 } 1489 } 1490 1491 /* 1492 * InvereZInterpolator compounded with an ease-out. 1493 */ 1494 static class ZoomInInterpolator implements TimeInterpolator { 1495 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1496 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1497 1498 public float getInterpolation(float input) { 1499 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1500 } 1501 } 1502 1503 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1504 1505 /* 1506 * 1507 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1508 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1509 * 1510 * These methods mark the appropriate pages as accepting drops (which alters their visual 1511 * appearance). 1512 * 1513 */ 1514 public void onDragStartedWithItem(View v) { 1515 final Canvas canvas = new Canvas(); 1516 1517 // The outline is used to visualize where the item will land if dropped 1518 mDragOutline = createDragOutline(v, canvas, DRAG_BITMAP_PADDING); 1519 } 1520 1521 public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, boolean clipAlpha) { 1522 final Canvas canvas = new Canvas(); 1523 1524 int[] size = estimateItemSize(info.spanX, info.spanY, info, false); 1525 1526 // The outline is used to visualize where the item will land if dropped 1527 mDragOutline = createDragOutline(b, canvas, DRAG_BITMAP_PADDING, size[0], 1528 size[1], clipAlpha); 1529 } 1530 1531 public void exitWidgetResizeMode() { 1532 DragLayer dragLayer = mLauncher.getDragLayer(); 1533 dragLayer.clearAllResizeFrames(); 1534 } 1535 1536 private void initAnimationArrays() { 1537 final int childCount = getChildCount(); 1538 if (mOldTranslationXs != null) return; 1539 mOldTranslationXs = new float[childCount]; 1540 mOldTranslationYs = new float[childCount]; 1541 mOldScaleXs = new float[childCount]; 1542 mOldScaleYs = new float[childCount]; 1543 mOldBackgroundAlphas = new float[childCount]; 1544 mOldAlphas = new float[childCount]; 1545 mNewTranslationXs = new float[childCount]; 1546 mNewTranslationYs = new float[childCount]; 1547 mNewScaleXs = new float[childCount]; 1548 mNewScaleYs = new float[childCount]; 1549 mNewBackgroundAlphas = new float[childCount]; 1550 mNewAlphas = new float[childCount]; 1551 mNewRotationYs = new float[childCount]; 1552 } 1553 1554 Animator getChangeStateAnimation(final State state, boolean animated) { 1555 return getChangeStateAnimation(state, animated, 0); 1556 } 1557 1558 Animator getChangeStateAnimation(final State state, boolean animated, int delay) { 1559 if (mState == state) { 1560 return null; 1561 } 1562 1563 // Initialize animation arrays for the first time if necessary 1564 initAnimationArrays(); 1565 1566 AnimatorSet anim = animated ? LauncherAnimUtils.createAnimatorSet() : null; 1567 1568 // Stop any scrolling, move to the current page right away 1569 setCurrentPage(getNextPage()); 1570 1571 final State oldState = mState; 1572 final boolean oldStateIsNormal = (oldState == State.NORMAL); 1573 final boolean oldStateIsSpringLoaded = (oldState == State.SPRING_LOADED); 1574 final boolean oldStateIsSmall = (oldState == State.SMALL); 1575 mState = state; 1576 final boolean stateIsNormal = (state == State.NORMAL); 1577 final boolean stateIsSpringLoaded = (state == State.SPRING_LOADED); 1578 final boolean stateIsSmall = (state == State.SMALL); 1579 float finalScaleFactor = 1.0f; 1580 float finalBackgroundAlpha = stateIsSpringLoaded ? 1.0f : 0f; 1581 float translationX = 0; 1582 float translationY = 0; 1583 boolean zoomIn = true; 1584 1585 if (state != State.NORMAL) { 1586 finalScaleFactor = mSpringLoadedShrinkFactor - (stateIsSmall ? 0.1f : 0); 1587 setPageSpacing(mSpringLoadedPageSpacing); 1588 if (oldStateIsNormal && stateIsSmall) { 1589 zoomIn = false; 1590 setLayoutScale(finalScaleFactor); 1591 updateChildrenLayersEnabled(false); 1592 } else { 1593 finalBackgroundAlpha = 1.0f; 1594 setLayoutScale(finalScaleFactor); 1595 } 1596 } else { 1597 setPageSpacing(PagedView.AUTOMATIC_PAGE_SPACING); 1598 setLayoutScale(1.0f); 1599 } 1600 1601 final int duration = zoomIn ? 1602 getResources().getInteger(R.integer.config_workspaceUnshrinkTime) : 1603 getResources().getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1604 for (int i = 0; i < getChildCount(); i++) { 1605 final CellLayout cl = (CellLayout) getChildAt(i); 1606 float finalAlpha = (!mWorkspaceFadeInAdjacentScreens || stateIsSpringLoaded || 1607 (i == mCurrentPage)) ? 1f : 0f; 1608 float currentAlpha = cl.getShortcutsAndWidgets().getAlpha(); 1609 float initialAlpha = currentAlpha; 1610 1611 // Determine the pages alpha during the state transition 1612 if ((oldStateIsSmall && stateIsNormal) || 1613 (oldStateIsNormal && stateIsSmall)) { 1614 // To/from workspace - only show the current page unless the transition is not 1615 // animated and the animation end callback below doesn't run; 1616 // or, if we're in spring-loaded mode 1617 if (i == mCurrentPage || !animated || oldStateIsSpringLoaded) { 1618 finalAlpha = 1f; 1619 } else { 1620 initialAlpha = 0f; 1621 finalAlpha = 0f; 1622 } 1623 } 1624 1625 mOldAlphas[i] = initialAlpha; 1626 mNewAlphas[i] = finalAlpha; 1627 if (animated) { 1628 mOldTranslationXs[i] = cl.getTranslationX(); 1629 mOldTranslationYs[i] = cl.getTranslationY(); 1630 mOldScaleXs[i] = cl.getScaleX(); 1631 mOldScaleYs[i] = cl.getScaleY(); 1632 mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1633 1634 mNewTranslationXs[i] = translationX; 1635 mNewTranslationYs[i] = translationY; 1636 mNewScaleXs[i] = finalScaleFactor; 1637 mNewScaleYs[i] = finalScaleFactor; 1638 mNewBackgroundAlphas[i] = finalBackgroundAlpha; 1639 } else { 1640 cl.setTranslationX(translationX); 1641 cl.setTranslationY(translationY); 1642 cl.setScaleX(finalScaleFactor); 1643 cl.setScaleY(finalScaleFactor); 1644 cl.setBackgroundAlpha(finalBackgroundAlpha); 1645 cl.setShortcutAndWidgetAlpha(finalAlpha); 1646 } 1647 } 1648 1649 if (animated) { 1650 for (int index = 0; index < getChildCount(); index++) { 1651 final int i = index; 1652 final CellLayout cl = (CellLayout) getChildAt(i); 1653 float currentAlpha = cl.getShortcutsAndWidgets().getAlpha(); 1654 if (mOldAlphas[i] == 0 && mNewAlphas[i] == 0) { 1655 cl.setTranslationX(mNewTranslationXs[i]); 1656 cl.setTranslationY(mNewTranslationYs[i]); 1657 cl.setScaleX(mNewScaleXs[i]); 1658 cl.setScaleY(mNewScaleYs[i]); 1659 cl.setBackgroundAlpha(mNewBackgroundAlphas[i]); 1660 cl.setShortcutAndWidgetAlpha(mNewAlphas[i]); 1661 cl.setRotationY(mNewRotationYs[i]); 1662 } else { 1663 LauncherViewPropertyAnimator a = new LauncherViewPropertyAnimator(cl); 1664 a.translationX(mNewTranslationXs[i]) 1665 .translationY(mNewTranslationYs[i]) 1666 .scaleX(mNewScaleXs[i]) 1667 .scaleY(mNewScaleYs[i]) 1668 .setDuration(duration) 1669 .setInterpolator(mZoomInInterpolator); 1670 anim.play(a); 1671 1672 if (mOldAlphas[i] != mNewAlphas[i] || currentAlpha != mNewAlphas[i]) { 1673 LauncherViewPropertyAnimator alphaAnim = 1674 new LauncherViewPropertyAnimator(cl.getShortcutsAndWidgets()); 1675 alphaAnim.alpha(mNewAlphas[i]) 1676 .setDuration(duration) 1677 .setInterpolator(mZoomInInterpolator); 1678 anim.play(alphaAnim); 1679 } 1680 if (mOldBackgroundAlphas[i] != 0 || 1681 mNewBackgroundAlphas[i] != 0) { 1682 ValueAnimator bgAnim = LauncherAnimUtils.ofFloat(0f, 1f).setDuration(duration); 1683 bgAnim.setInterpolator(mZoomInInterpolator); 1684 bgAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1685 public void onAnimationUpdate(float a, float b) { 1686 cl.setBackgroundAlpha( 1687 a * mOldBackgroundAlphas[i] + 1688 b * mNewBackgroundAlphas[i]); 1689 } 1690 }); 1691 anim.play(bgAnim); 1692 } 1693 } 1694 } 1695 buildPageHardwareLayers(); 1696 anim.setStartDelay(delay); 1697 } 1698 1699 if (stateIsSpringLoaded) { 1700 // Right now we're covered by Apps Customize 1701 // Show the background gradient immediately, so the gradient will 1702 // be showing once AppsCustomize disappears 1703 animateBackgroundGradient(getResources().getInteger( 1704 R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, false); 1705 } else { 1706 // Fade the background gradient away 1707 animateBackgroundGradient(0f, true); 1708 } 1709 return anim; 1710 } 1711 1712 @Override 1713 public void onLauncherTransitionPrepare(Launcher l, boolean animated, boolean toWorkspace) { 1714 mIsSwitchingState = true; 1715 cancelScrollingIndicatorAnimations(); 1716 } 1717 1718 @Override 1719 public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) { 1720 } 1721 1722 @Override 1723 public void onLauncherTransitionStep(Launcher l, float t) { 1724 mTransitionProgress = t; 1725 } 1726 1727 @Override 1728 public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) { 1729 mIsSwitchingState = false; 1730 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 1731 updateChildrenLayersEnabled(false); 1732 // The code in getChangeStateAnimation to determine initialAlpha and finalAlpha will ensure 1733 // ensure that only the current page is visible during (and subsequently, after) the 1734 // transition animation. If fade adjacent pages is disabled, then re-enable the page 1735 // visibility after the transition animation. 1736 if (!mWorkspaceFadeInAdjacentScreens) { 1737 for (int i = 0; i < getChildCount(); i++) { 1738 final CellLayout cl = (CellLayout) getChildAt(i); 1739 cl.setShortcutAndWidgetAlpha(1f); 1740 } 1741 } 1742 } 1743 1744 @Override 1745 public View getContent() { 1746 return this; 1747 } 1748 1749 /** 1750 * Draw the View v into the given Canvas. 1751 * 1752 * @param v the view to draw 1753 * @param destCanvas the canvas to draw on 1754 * @param padding the horizontal and vertical padding to use when drawing 1755 */ 1756 private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { 1757 final Rect clipRect = mTempRect; 1758 v.getDrawingRect(clipRect); 1759 1760 boolean textVisible = false; 1761 1762 destCanvas.save(); 1763 if (v instanceof TextView && pruneToDrawable) { 1764 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1765 clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); 1766 destCanvas.translate(padding / 2, padding / 2); 1767 d.draw(destCanvas); 1768 } else { 1769 if (v instanceof FolderIcon) { 1770 // For FolderIcons the text can bleed into the icon area, and so we need to 1771 // hide the text completely (which can't be achieved by clipping). 1772 if (((FolderIcon) v).getTextVisible()) { 1773 ((FolderIcon) v).setTextVisible(false); 1774 textVisible = true; 1775 } 1776 } else if (v instanceof BubbleTextView) { 1777 final BubbleTextView tv = (BubbleTextView) v; 1778 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1779 tv.getLayout().getLineTop(0); 1780 } else if (v instanceof TextView) { 1781 final TextView tv = (TextView) v; 1782 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1783 tv.getLayout().getLineTop(0); 1784 } 1785 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1786 destCanvas.clipRect(clipRect, Op.REPLACE); 1787 v.draw(destCanvas); 1788 1789 // Restore text visibility of FolderIcon if necessary 1790 if (textVisible) { 1791 ((FolderIcon) v).setTextVisible(true); 1792 } 1793 } 1794 destCanvas.restore(); 1795 } 1796 1797 /** 1798 * Returns a new bitmap to show when the given View is being dragged around. 1799 * Responsibility for the bitmap is transferred to the caller. 1800 */ 1801 public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1802 Bitmap b; 1803 1804 if (v instanceof TextView) { 1805 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1806 b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, 1807 d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); 1808 } else { 1809 b = Bitmap.createBitmap( 1810 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1811 } 1812 1813 canvas.setBitmap(b); 1814 drawDragView(v, canvas, padding, true); 1815 canvas.setBitmap(null); 1816 1817 return b; 1818 } 1819 1820 /** 1821 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1822 * Responsibility for the bitmap is transferred to the caller. 1823 */ 1824 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1825 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1826 final Bitmap b = Bitmap.createBitmap( 1827 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1828 1829 canvas.setBitmap(b); 1830 drawDragView(v, canvas, padding, true); 1831 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1832 canvas.setBitmap(null); 1833 return b; 1834 } 1835 1836 /** 1837 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1838 * Responsibility for the bitmap is transferred to the caller. 1839 */ 1840 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h, 1841 boolean clipAlpha) { 1842 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1843 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1844 canvas.setBitmap(b); 1845 1846 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 1847 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 1848 (h - padding) / (float) orig.getHeight()); 1849 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 1850 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 1851 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 1852 1853 // center the image 1854 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 1855 1856 canvas.drawBitmap(orig, src, dst, null); 1857 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor, 1858 clipAlpha); 1859 canvas.setBitmap(null); 1860 1861 return b; 1862 } 1863 1864 void startDrag(CellLayout.CellInfo cellInfo) { 1865 View child = cellInfo.cell; 1866 1867 // Make sure the drag was started by a long press as opposed to a long click. 1868 if (!child.isInTouchMode()) { 1869 return; 1870 } 1871 1872 mDragInfo = cellInfo; 1873 child.setVisibility(INVISIBLE); 1874 CellLayout layout = (CellLayout) child.getParent().getParent(); 1875 layout.prepareChildForDrag(child); 1876 1877 child.clearFocus(); 1878 child.setPressed(false); 1879 1880 final Canvas canvas = new Canvas(); 1881 1882 // The outline is used to visualize where the item will land if dropped 1883 mDragOutline = createDragOutline(child, canvas, DRAG_BITMAP_PADDING); 1884 beginDragShared(child, this); 1885 } 1886 1887 public void beginDragShared(View child, DragSource source) { 1888 Resources r = getResources(); 1889 1890 // The drag bitmap follows the touch point around on the screen 1891 final Bitmap b = createDragBitmap(child, new Canvas(), DRAG_BITMAP_PADDING); 1892 1893 final int bmpWidth = b.getWidth(); 1894 final int bmpHeight = b.getHeight(); 1895 1896 float scale = mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 1897 int dragLayerX = 1898 Math.round(mTempXY[0] - (bmpWidth - scale * child.getWidth()) / 2); 1899 int dragLayerY = 1900 Math.round(mTempXY[1] - (bmpHeight - scale * bmpHeight) / 2 1901 - DRAG_BITMAP_PADDING / 2); 1902 1903 Point dragVisualizeOffset = null; 1904 Rect dragRect = null; 1905 if (child instanceof BubbleTextView || child instanceof PagedViewIcon) { 1906 int iconSize = r.getDimensionPixelSize(R.dimen.app_icon_size); 1907 int iconPaddingTop = r.getDimensionPixelSize(R.dimen.app_icon_padding_top); 1908 int top = child.getPaddingTop(); 1909 int left = (bmpWidth - iconSize) / 2; 1910 int right = left + iconSize; 1911 int bottom = top + iconSize; 1912 dragLayerY += top; 1913 // Note: The drag region is used to calculate drag layer offsets, but the 1914 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 1915 dragVisualizeOffset = new Point(-DRAG_BITMAP_PADDING / 2, 1916 iconPaddingTop - DRAG_BITMAP_PADDING / 2); 1917 dragRect = new Rect(left, top, right, bottom); 1918 } else if (child instanceof FolderIcon) { 1919 int previewSize = r.getDimensionPixelSize(R.dimen.folder_preview_size); 1920 dragRect = new Rect(0, 0, child.getWidth(), previewSize); 1921 } 1922 1923 // Clear the pressed state if necessary 1924 if (child instanceof BubbleTextView) { 1925 BubbleTextView icon = (BubbleTextView) child; 1926 icon.clearPressedOrFocusedBackground(); 1927 } 1928 1929 mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 1930 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect, scale); 1931 b.recycle(); 1932 1933 // Show the scrolling indicator when you pick up an item 1934 showScrollingIndicator(false); 1935 } 1936 1937 void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, int screen, 1938 int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { 1939 View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); 1940 1941 final int[] cellXY = new int[2]; 1942 target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1943 addInScreen(view, container, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1944 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, cellXY[0], 1945 cellXY[1]); 1946 } 1947 1948 public boolean transitionStateShouldAllowDrop() { 1949 return ((!isSwitchingState() || mTransitionProgress > 0.5f) && mState != State.SMALL); 1950 } 1951 1952 /** 1953 * {@inheritDoc} 1954 */ 1955 public boolean acceptDrop(DragObject d) { 1956 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1957 CellLayout dropTargetLayout = mDropToLayout; 1958 if (d.dragSource != this) { 1959 // Don't accept the drop if we're not over a screen at time of drop 1960 if (dropTargetLayout == null) { 1961 return false; 1962 } 1963 if (!transitionStateShouldAllowDrop()) return false; 1964 1965 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 1966 d.dragView, mDragViewVisualCenter); 1967 1968 // We want the point to be mapped to the dragTarget. 1969 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 1970 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 1971 } else { 1972 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 1973 } 1974 1975 int spanX = 1; 1976 int spanY = 1; 1977 if (mDragInfo != null) { 1978 final CellLayout.CellInfo dragCellInfo = mDragInfo; 1979 spanX = dragCellInfo.spanX; 1980 spanY = dragCellInfo.spanY; 1981 } else { 1982 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 1983 spanX = dragInfo.spanX; 1984 spanY = dragInfo.spanY; 1985 } 1986 1987 int minSpanX = spanX; 1988 int minSpanY = spanY; 1989 if (d.dragInfo instanceof PendingAddWidgetInfo) { 1990 minSpanX = ((PendingAddWidgetInfo) d.dragInfo).minSpanX; 1991 minSpanY = ((PendingAddWidgetInfo) d.dragInfo).minSpanY; 1992 } 1993 1994 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 1995 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, dropTargetLayout, 1996 mTargetCell); 1997 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 1998 mDragViewVisualCenter[1], mTargetCell); 1999 if (willCreateUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, 2000 mTargetCell, distance, true)) { 2001 return true; 2002 } 2003 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, 2004 mTargetCell, distance)) { 2005 return true; 2006 } 2007 2008 int[] resultSpan = new int[2]; 2009 mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], 2010 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2011 null, mTargetCell, resultSpan, CellLayout.MODE_ACCEPT_DROP); 2012 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2013 2014 // Don't accept the drop if there's no room for the item 2015 if (!foundCell) { 2016 // Don't show the message if we are dropping on the AllApps button and the hotseat 2017 // is full 2018 boolean isHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2019 if (mTargetCell != null && isHotseat) { 2020 Hotseat hotseat = mLauncher.getHotseat(); 2021 if (hotseat.isAllAppsButtonRank( 2022 hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { 2023 return false; 2024 } 2025 } 2026 2027 mLauncher.showOutOfSpaceMessage(isHotseat); 2028 return false; 2029 } 2030 } 2031 return true; 2032 } 2033 2034 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, float 2035 distance, boolean considerTimeout) { 2036 if (distance > mMaxDistanceForFolderCreation) return false; 2037 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2038 2039 if (dropOverView != null) { 2040 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2041 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2042 return false; 2043 } 2044 } 2045 2046 boolean hasntMoved = false; 2047 if (mDragInfo != null) { 2048 hasntMoved = dropOverView == mDragInfo.cell; 2049 } 2050 2051 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2052 return false; 2053 } 2054 2055 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2056 boolean willBecomeShortcut = 2057 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2058 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2059 2060 return (aboveShortcut && willBecomeShortcut); 2061 } 2062 2063 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell, 2064 float distance) { 2065 if (distance > mMaxDistanceForFolderCreation) return false; 2066 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2067 2068 if (dropOverView != null) { 2069 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2070 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2071 return false; 2072 } 2073 } 2074 2075 if (dropOverView instanceof FolderIcon) { 2076 FolderIcon fi = (FolderIcon) dropOverView; 2077 if (fi.acceptDrop(dragInfo)) { 2078 return true; 2079 } 2080 } 2081 return false; 2082 } 2083 2084 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2085 int[] targetCell, float distance, boolean external, DragView dragView, 2086 Runnable postAnimationRunnable) { 2087 if (distance > mMaxDistanceForFolderCreation) return false; 2088 View v = target.getChildAt(targetCell[0], targetCell[1]); 2089 2090 boolean hasntMoved = false; 2091 if (mDragInfo != null) { 2092 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2093 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2094 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2095 } 2096 2097 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2098 mCreateUserFolderOnDrop = false; 2099 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 2100 2101 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2102 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2103 2104 if (aboveShortcut && willBecomeShortcut) { 2105 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2106 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2107 // if the drag started here, we need to remove it from the workspace 2108 if (!external) { 2109 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2110 } 2111 2112 Rect folderLocation = new Rect(); 2113 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2114 target.removeView(v); 2115 2116 FolderIcon fi = 2117 mLauncher.addFolder(target, container, screen, targetCell[0], targetCell[1]); 2118 destInfo.cellX = -1; 2119 destInfo.cellY = -1; 2120 sourceInfo.cellX = -1; 2121 sourceInfo.cellY = -1; 2122 2123 // If the dragView is null, we can't animate 2124 boolean animate = dragView != null; 2125 if (animate) { 2126 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2127 postAnimationRunnable); 2128 } else { 2129 fi.addItem(destInfo); 2130 fi.addItem(sourceInfo); 2131 } 2132 return true; 2133 } 2134 return false; 2135 } 2136 2137 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2138 float distance, DragObject d, boolean external) { 2139 if (distance > mMaxDistanceForFolderCreation) return false; 2140 2141 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2142 if (!mAddToExistingFolderOnDrop) return false; 2143 mAddToExistingFolderOnDrop = false; 2144 2145 if (dropOverView instanceof FolderIcon) { 2146 FolderIcon fi = (FolderIcon) dropOverView; 2147 if (fi.acceptDrop(d.dragInfo)) { 2148 fi.onDrop(d); 2149 2150 // if the drag started here, we need to remove it from the workspace 2151 if (!external) { 2152 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2153 } 2154 return true; 2155 } 2156 } 2157 return false; 2158 } 2159 2160 public void onDrop(final DragObject d) { 2161 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2162 mDragViewVisualCenter); 2163 2164 CellLayout dropTargetLayout = mDropToLayout; 2165 2166 // We want the point to be mapped to the dragTarget. 2167 if (dropTargetLayout != null) { 2168 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 2169 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2170 } else { 2171 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 2172 } 2173 } 2174 2175 int snapScreen = -1; 2176 boolean resizeOnDrop = false; 2177 if (d.dragSource != this) { 2178 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2179 (int) mDragViewVisualCenter[1] }; 2180 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2181 } else if (mDragInfo != null) { 2182 final View cell = mDragInfo.cell; 2183 2184 Runnable resizeRunnable = null; 2185 if (dropTargetLayout != null) { 2186 // Move internally 2187 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2188 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2189 long container = hasMovedIntoHotseat ? 2190 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2191 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2192 int screen = (mTargetCell[0] < 0) ? 2193 mDragInfo.screen : indexOfChild(dropTargetLayout); 2194 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2195 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2196 // First we find the cell nearest to point at which the item is 2197 // dropped, without any consideration to whether there is an item there. 2198 2199 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2200 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2201 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2202 mDragViewVisualCenter[1], mTargetCell); 2203 2204 // If the item being dropped is a shortcut and the nearest drop 2205 // cell also contains a shortcut, then create a folder with the two shortcuts. 2206 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2207 dropTargetLayout, mTargetCell, distance, false, d.dragView, null)) { 2208 return; 2209 } 2210 2211 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, 2212 distance, d, false)) { 2213 return; 2214 } 2215 2216 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2217 // we need to find the nearest cell location that is vacant 2218 ItemInfo item = (ItemInfo) d.dragInfo; 2219 int minSpanX = item.spanX; 2220 int minSpanY = item.spanY; 2221 if (item.minSpanX > 0 && item.minSpanY > 0) { 2222 minSpanX = item.minSpanX; 2223 minSpanY = item.minSpanY; 2224 } 2225 2226 int[] resultSpan = new int[2]; 2227 mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], 2228 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, cell, 2229 mTargetCell, resultSpan, CellLayout.MODE_ON_DROP); 2230 2231 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2232 2233 // if the widget resizes on drop, or the sdk level is less than JBMR1, then we 2234 // need to update the size. 2235 if (foundCell && (cell instanceof AppWidgetHostView) && 2236 (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY || 2237 Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN_MR1)) { 2238 resizeOnDrop = true; 2239 item.spanX = resultSpan[0]; 2240 item.spanY = resultSpan[1]; 2241 AppWidgetHostView awhv = (AppWidgetHostView) cell; 2242 AppWidgetResizeFrame.updateWidgetSizeRanges(awhv, mLauncher, resultSpan[0], 2243 resultSpan[1]); 2244 } 2245 2246 if (mCurrentPage != screen && !hasMovedIntoHotseat) { 2247 snapScreen = screen; 2248 snapToPage(screen); 2249 } 2250 2251 if (foundCell) { 2252 final ItemInfo info = (ItemInfo) cell.getTag(); 2253 if (hasMovedLayouts) { 2254 // Reparent the view 2255 getParentCellLayoutForView(cell).removeView(cell); 2256 addInScreen(cell, container, screen, mTargetCell[0], mTargetCell[1], 2257 info.spanX, info.spanY); 2258 } 2259 2260 // update the item's position after drop 2261 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2262 lp.cellX = lp.tmpCellX = mTargetCell[0]; 2263 lp.cellY = lp.tmpCellY = mTargetCell[1]; 2264 lp.cellHSpan = item.spanX; 2265 lp.cellVSpan = item.spanY; 2266 lp.isLockedToGrid = true; 2267 cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screen, 2268 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2269 2270 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2271 cell instanceof LauncherAppWidgetHostView) { 2272 final CellLayout cellLayout = dropTargetLayout; 2273 // We post this call so that the widget has a chance to be placed 2274 // in its final location 2275 2276 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2277 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2278 if (pinfo != null && 2279 pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2280 final Runnable addResizeFrame = new Runnable() { 2281 public void run() { 2282 DragLayer dragLayer = mLauncher.getDragLayer(); 2283 dragLayer.addResizeFrame(info, hostView, cellLayout); 2284 } 2285 }; 2286 resizeRunnable = (new Runnable() { 2287 public void run() { 2288 if (!isPageMoving()) { 2289 addResizeFrame.run(); 2290 } else { 2291 mDelayedResizeRunnable = addResizeFrame; 2292 } 2293 } 2294 }); 2295 } 2296 } 2297 2298 LauncherModel.moveItemInDatabase(mLauncher, info, container, screen, lp.cellX, 2299 lp.cellY); 2300 } else { 2301 // If we can't find a drop location, we return the item to its original position 2302 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2303 mTargetCell[0] = lp.cellX; 2304 mTargetCell[1] = lp.cellY; 2305 CellLayout layout = (CellLayout) cell.getParent().getParent(); 2306 layout.markCellsAsOccupiedForView(cell); 2307 } 2308 } 2309 2310 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2311 final Runnable finalResizeRunnable = resizeRunnable; 2312 // Prepare it to be animated into its new position 2313 // This must be called after the view has been re-parented 2314 final Runnable onCompleteRunnable = new Runnable() { 2315 @Override 2316 public void run() { 2317 mAnimatingViewIntoPlace = false; 2318 updateChildrenLayersEnabled(false); 2319 if (finalResizeRunnable != null) { 2320 finalResizeRunnable.run(); 2321 } 2322 } 2323 }; 2324 mAnimatingViewIntoPlace = true; 2325 if (d.dragView.hasDrawn()) { 2326 final ItemInfo info = (ItemInfo) cell.getTag(); 2327 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET) { 2328 int animationType = resizeOnDrop ? ANIMATE_INTO_POSITION_AND_RESIZE : 2329 ANIMATE_INTO_POSITION_AND_DISAPPEAR; 2330 animateWidgetDrop(info, parent, d.dragView, 2331 onCompleteRunnable, animationType, cell, false); 2332 } else { 2333 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2334 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2335 onCompleteRunnable, this); 2336 } 2337 } else { 2338 d.deferDragViewCleanupPostAnimation = false; 2339 cell.setVisibility(VISIBLE); 2340 } 2341 parent.onDropChild(cell); 2342 } 2343 } 2344 2345 public void setFinalScrollForPageChange(int screen) { 2346 if (screen >= 0) { 2347 mSavedScrollX = getScrollX(); 2348 CellLayout cl = (CellLayout) getChildAt(screen); 2349 mSavedTranslationX = cl.getTranslationX(); 2350 mSavedRotationY = cl.getRotationY(); 2351 final int newX = getChildOffset(screen) - getRelativeChildOffset(screen); 2352 setScrollX(newX); 2353 cl.setTranslationX(0f); 2354 cl.setRotationY(0f); 2355 } 2356 } 2357 2358 public void resetFinalScrollForPageChange(int screen) { 2359 if (screen >= 0) { 2360 CellLayout cl = (CellLayout) getChildAt(screen); 2361 setScrollX(mSavedScrollX); 2362 cl.setTranslationX(mSavedTranslationX); 2363 cl.setRotationY(mSavedRotationY); 2364 } 2365 } 2366 2367 public void getViewLocationRelativeToSelf(View v, int[] location) { 2368 getLocationInWindow(location); 2369 int x = location[0]; 2370 int y = location[1]; 2371 2372 v.getLocationInWindow(location); 2373 int vX = location[0]; 2374 int vY = location[1]; 2375 2376 location[0] = vX - x; 2377 location[1] = vY - y; 2378 } 2379 2380 public void onDragEnter(DragObject d) { 2381 mDragEnforcer.onDragEnter(); 2382 mCreateUserFolderOnDrop = false; 2383 mAddToExistingFolderOnDrop = false; 2384 2385 mDropToLayout = null; 2386 CellLayout layout = getCurrentDropLayout(); 2387 setCurrentDropLayout(layout); 2388 setCurrentDragOverlappingLayout(layout); 2389 2390 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2391 // don't need to show the outlines 2392 if (LauncherApplication.isScreenLarge()) { 2393 showOutlines(); 2394 } 2395 } 2396 2397 static Rect getCellLayoutMetrics(Launcher launcher, int orientation) { 2398 Resources res = launcher.getResources(); 2399 Display display = launcher.getWindowManager().getDefaultDisplay(); 2400 Point smallestSize = new Point(); 2401 Point largestSize = new Point(); 2402 display.getCurrentSizeRange(smallestSize, largestSize); 2403 if (orientation == CellLayout.LANDSCAPE) { 2404 if (mLandscapeCellLayoutMetrics == null) { 2405 int paddingLeft = res.getDimensionPixelSize(R.dimen.workspace_left_padding_land); 2406 int paddingRight = res.getDimensionPixelSize(R.dimen.workspace_right_padding_land); 2407 int paddingTop = res.getDimensionPixelSize(R.dimen.workspace_top_padding_land); 2408 int paddingBottom = res.getDimensionPixelSize(R.dimen.workspace_bottom_padding_land); 2409 int width = largestSize.x - paddingLeft - paddingRight; 2410 int height = smallestSize.y - paddingTop - paddingBottom; 2411 mLandscapeCellLayoutMetrics = new Rect(); 2412 CellLayout.getMetrics(mLandscapeCellLayoutMetrics, res, 2413 width, height, LauncherModel.getCellCountX(), LauncherModel.getCellCountY(), 2414 orientation); 2415 } 2416 return mLandscapeCellLayoutMetrics; 2417 } else if (orientation == CellLayout.PORTRAIT) { 2418 if (mPortraitCellLayoutMetrics == null) { 2419 int paddingLeft = res.getDimensionPixelSize(R.dimen.workspace_left_padding_land); 2420 int paddingRight = res.getDimensionPixelSize(R.dimen.workspace_right_padding_land); 2421 int paddingTop = res.getDimensionPixelSize(R.dimen.workspace_top_padding_land); 2422 int paddingBottom = res.getDimensionPixelSize(R.dimen.workspace_bottom_padding_land); 2423 int width = smallestSize.x - paddingLeft - paddingRight; 2424 int height = largestSize.y - paddingTop - paddingBottom; 2425 mPortraitCellLayoutMetrics = new Rect(); 2426 CellLayout.getMetrics(mPortraitCellLayoutMetrics, res, 2427 width, height, LauncherModel.getCellCountX(), LauncherModel.getCellCountY(), 2428 orientation); 2429 } 2430 return mPortraitCellLayoutMetrics; 2431 } 2432 return null; 2433 } 2434 2435 public void onDragExit(DragObject d) { 2436 mDragEnforcer.onDragExit(); 2437 2438 // Here we store the final page that will be dropped to, if the workspace in fact 2439 // receives the drop 2440 if (mInScrollArea) { 2441 if (isPageMoving()) { 2442 // If the user drops while the page is scrolling, we should use that page as the 2443 // destination instead of the page that is being hovered over. 2444 mDropToLayout = (CellLayout) getPageAt(getNextPage()); 2445 } else { 2446 mDropToLayout = mDragOverlappingLayout; 2447 } 2448 } else { 2449 mDropToLayout = mDragTargetLayout; 2450 } 2451 2452 if (mDragMode == DRAG_MODE_CREATE_FOLDER) { 2453 mCreateUserFolderOnDrop = true; 2454 } else if (mDragMode == DRAG_MODE_ADD_TO_FOLDER) { 2455 mAddToExistingFolderOnDrop = true; 2456 } 2457 2458 // Reset the scroll area and previous drag target 2459 onResetScrollArea(); 2460 setCurrentDropLayout(null); 2461 setCurrentDragOverlappingLayout(null); 2462 2463 mSpringLoadedDragController.cancel(); 2464 2465 if (!mIsPageMoving) { 2466 hideOutlines(); 2467 } 2468 } 2469 2470 void setCurrentDropLayout(CellLayout layout) { 2471 if (mDragTargetLayout != null) { 2472 mDragTargetLayout.revertTempState(); 2473 mDragTargetLayout.onDragExit(); 2474 } 2475 mDragTargetLayout = layout; 2476 if (mDragTargetLayout != null) { 2477 mDragTargetLayout.onDragEnter(); 2478 } 2479 cleanupReorder(true); 2480 cleanupFolderCreation(); 2481 setCurrentDropOverCell(-1, -1); 2482 } 2483 2484 void setCurrentDragOverlappingLayout(CellLayout layout) { 2485 if (mDragOverlappingLayout != null) { 2486 mDragOverlappingLayout.setIsDragOverlapping(false); 2487 } 2488 mDragOverlappingLayout = layout; 2489 if (mDragOverlappingLayout != null) { 2490 mDragOverlappingLayout.setIsDragOverlapping(true); 2491 } 2492 invalidate(); 2493 } 2494 2495 void setCurrentDropOverCell(int x, int y) { 2496 if (x != mDragOverX || y != mDragOverY) { 2497 mDragOverX = x; 2498 mDragOverY = y; 2499 setDragMode(DRAG_MODE_NONE); 2500 } 2501 } 2502 2503 void setDragMode(int dragMode) { 2504 if (dragMode != mDragMode) { 2505 if (dragMode == DRAG_MODE_NONE) { 2506 cleanupAddToFolder(); 2507 // We don't want to cancel the re-order alarm every time the target cell changes 2508 // as this feels to slow / unresponsive. 2509 cleanupReorder(false); 2510 cleanupFolderCreation(); 2511 } else if (dragMode == DRAG_MODE_ADD_TO_FOLDER) { 2512 cleanupReorder(true); 2513 cleanupFolderCreation(); 2514 } else if (dragMode == DRAG_MODE_CREATE_FOLDER) { 2515 cleanupAddToFolder(); 2516 cleanupReorder(true); 2517 } else if (dragMode == DRAG_MODE_REORDER) { 2518 cleanupAddToFolder(); 2519 cleanupFolderCreation(); 2520 } 2521 mDragMode = dragMode; 2522 } 2523 } 2524 2525 private void cleanupFolderCreation() { 2526 if (mDragFolderRingAnimator != null) { 2527 mDragFolderRingAnimator.animateToNaturalState(); 2528 } 2529 mFolderCreationAlarm.cancelAlarm(); 2530 } 2531 2532 private void cleanupAddToFolder() { 2533 if (mDragOverFolderIcon != null) { 2534 mDragOverFolderIcon.onDragExit(null); 2535 mDragOverFolderIcon = null; 2536 } 2537 } 2538 2539 private void cleanupReorder(boolean cancelAlarm) { 2540 // Any pending reorders are canceled 2541 if (cancelAlarm) { 2542 mReorderAlarm.cancelAlarm(); 2543 } 2544 mLastReorderX = -1; 2545 mLastReorderY = -1; 2546 } 2547 2548 public DropTarget getDropTargetDelegate(DragObject d) { 2549 return null; 2550 } 2551 2552 /* 2553 * 2554 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2555 * coordinate space. The argument xy is modified with the return result. 2556 * 2557 */ 2558 void mapPointFromSelfToChild(View v, float[] xy) { 2559 mapPointFromSelfToChild(v, xy, null); 2560 } 2561 2562 /* 2563 * 2564 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2565 * coordinate space. The argument xy is modified with the return result. 2566 * 2567 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2568 * computing it itself; we use this to avoid redundant matrix inversions in 2569 * findMatchingPageForDragOver 2570 * 2571 */ 2572 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2573 if (cachedInverseMatrix == null) { 2574 v.getMatrix().invert(mTempInverseMatrix); 2575 cachedInverseMatrix = mTempInverseMatrix; 2576 } 2577 int scrollX = getScrollX(); 2578 if (mNextPage != INVALID_PAGE) { 2579 scrollX = mScroller.getFinalX(); 2580 } 2581 xy[0] = xy[0] + scrollX - v.getLeft(); 2582 xy[1] = xy[1] + getScrollY() - v.getTop(); 2583 cachedInverseMatrix.mapPoints(xy); 2584 } 2585 2586 2587 void mapPointFromSelfToHotseatLayout(Hotseat hotseat, float[] xy) { 2588 hotseat.getLayout().getMatrix().invert(mTempInverseMatrix); 2589 xy[0] = xy[0] - hotseat.getLeft() - hotseat.getLayout().getLeft(); 2590 xy[1] = xy[1] - hotseat.getTop() - hotseat.getLayout().getTop(); 2591 mTempInverseMatrix.mapPoints(xy); 2592 } 2593 2594 /* 2595 * 2596 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2597 * the parent View's coordinate space. The argument xy is modified with the return result. 2598 * 2599 */ 2600 void mapPointFromChildToSelf(View v, float[] xy) { 2601 v.getMatrix().mapPoints(xy); 2602 int scrollX = getScrollX(); 2603 if (mNextPage != INVALID_PAGE) { 2604 scrollX = mScroller.getFinalX(); 2605 } 2606 xy[0] -= (scrollX - v.getLeft()); 2607 xy[1] -= (getScrollY() - v.getTop()); 2608 } 2609 2610 static private float squaredDistance(float[] point1, float[] point2) { 2611 float distanceX = point1[0] - point2[0]; 2612 float distanceY = point2[1] - point2[1]; 2613 return distanceX * distanceX + distanceY * distanceY; 2614 } 2615 2616 /* 2617 * 2618 * Returns true if the passed CellLayout cl overlaps with dragView 2619 * 2620 */ 2621 boolean overlaps(CellLayout cl, DragView dragView, 2622 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2623 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2624 final float[] draggedItemTopLeft = mTempDragCoordinates; 2625 draggedItemTopLeft[0] = dragViewX; 2626 draggedItemTopLeft[1] = dragViewY; 2627 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2628 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2629 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2630 2631 // Transform the dragged item's top left coordinates 2632 // to the CellLayout's local coordinates 2633 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2634 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2635 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2636 2637 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2638 // Transform the dragged item's bottom right coordinates 2639 // to the CellLayout's local coordinates 2640 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2641 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2642 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2643 2644 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2645 float overlap = (overlapRegionRight - overlapRegionLeft) * 2646 (overlapRegionBottom - overlapRegionTop); 2647 if (overlap > 0) { 2648 return true; 2649 } 2650 } 2651 } 2652 return false; 2653 } 2654 2655 /* 2656 * 2657 * This method returns the CellLayout that is currently being dragged to. In order to drag 2658 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2659 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2660 * 2661 * Return null if no CellLayout is currently being dragged over 2662 * 2663 */ 2664 private CellLayout findMatchingPageForDragOver( 2665 DragView dragView, float originX, float originY, boolean exact) { 2666 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2667 // with the item being dragged and then choose the one that's closest to the touch point 2668 final int screenCount = getChildCount(); 2669 CellLayout bestMatchingScreen = null; 2670 float smallestDistSoFar = Float.MAX_VALUE; 2671 2672 for (int i = 0; i < screenCount; i++) { 2673 CellLayout cl = (CellLayout) getChildAt(i); 2674 2675 final float[] touchXy = {originX, originY}; 2676 // Transform the touch coordinates to the CellLayout's local coordinates 2677 // If the touch point is within the bounds of the cell layout, we can return immediately 2678 cl.getMatrix().invert(mTempInverseMatrix); 2679 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2680 2681 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2682 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2683 return cl; 2684 } 2685 2686 if (!exact) { 2687 // Get the center of the cell layout in screen coordinates 2688 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2689 cellLayoutCenter[0] = cl.getWidth()/2; 2690 cellLayoutCenter[1] = cl.getHeight()/2; 2691 mapPointFromChildToSelf(cl, cellLayoutCenter); 2692 2693 touchXy[0] = originX; 2694 touchXy[1] = originY; 2695 2696 // Calculate the distance between the center of the CellLayout 2697 // and the touch point 2698 float dist = squaredDistance(touchXy, cellLayoutCenter); 2699 2700 if (dist < smallestDistSoFar) { 2701 smallestDistSoFar = dist; 2702 bestMatchingScreen = cl; 2703 } 2704 } 2705 } 2706 return bestMatchingScreen; 2707 } 2708 2709 // This is used to compute the visual center of the dragView. This point is then 2710 // used to visualize drop locations and determine where to drop an item. The idea is that 2711 // the visual center represents the user's interpretation of where the item is, and hence 2712 // is the appropriate point to use when determining drop location. 2713 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2714 DragView dragView, float[] recycle) { 2715 float res[]; 2716 if (recycle == null) { 2717 res = new float[2]; 2718 } else { 2719 res = recycle; 2720 } 2721 2722 // First off, the drag view has been shifted in a way that is not represented in the 2723 // x and y values or the x/yOffsets. Here we account for that shift. 2724 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2725 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2726 2727 // These represent the visual top and left of drag view if a dragRect was provided. 2728 // If a dragRect was not provided, then they correspond to the actual view left and 2729 // top, as the dragRect is in that case taken to be the entire dragView. 2730 // R.dimen.dragViewOffsetY. 2731 int left = x - xOffset; 2732 int top = y - yOffset; 2733 2734 // In order to find the visual center, we shift by half the dragRect 2735 res[0] = left + dragView.getDragRegion().width() / 2; 2736 res[1] = top + dragView.getDragRegion().height() / 2; 2737 2738 return res; 2739 } 2740 2741 private boolean isDragWidget(DragObject d) { 2742 return (d.dragInfo instanceof LauncherAppWidgetInfo || 2743 d.dragInfo instanceof PendingAddWidgetInfo); 2744 } 2745 private boolean isExternalDragWidget(DragObject d) { 2746 return d.dragSource != this && isDragWidget(d); 2747 } 2748 2749 public void onDragOver(DragObject d) { 2750 // Skip drag over events while we are dragging over side pages 2751 if (mInScrollArea || mIsSwitchingState || mState == State.SMALL) return; 2752 2753 Rect r = new Rect(); 2754 CellLayout layout = null; 2755 ItemInfo item = (ItemInfo) d.dragInfo; 2756 2757 // Ensure that we have proper spans for the item that we are dropping 2758 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2759 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2760 d.dragView, mDragViewVisualCenter); 2761 2762 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2763 // Identify whether we have dragged over a side page 2764 if (isSmall()) { 2765 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 2766 mLauncher.getHotseat().getHitRect(r); 2767 if (r.contains(d.x, d.y)) { 2768 layout = mLauncher.getHotseat().getLayout(); 2769 } 2770 } 2771 if (layout == null) { 2772 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false); 2773 } 2774 if (layout != mDragTargetLayout) { 2775 2776 setCurrentDropLayout(layout); 2777 setCurrentDragOverlappingLayout(layout); 2778 2779 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 2780 if (isInSpringLoadedMode) { 2781 if (mLauncher.isHotseatLayout(layout)) { 2782 mSpringLoadedDragController.cancel(); 2783 } else { 2784 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2785 } 2786 } 2787 } 2788 } else { 2789 // Test to see if we are over the hotseat otherwise just use the current page 2790 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 2791 mLauncher.getHotseat().getHitRect(r); 2792 if (r.contains(d.x, d.y)) { 2793 layout = mLauncher.getHotseat().getLayout(); 2794 } 2795 } 2796 if (layout == null) { 2797 layout = getCurrentDropLayout(); 2798 } 2799 if (layout != mDragTargetLayout) { 2800 setCurrentDropLayout(layout); 2801 setCurrentDragOverlappingLayout(layout); 2802 } 2803 } 2804 2805 // Handle the drag over 2806 if (mDragTargetLayout != null) { 2807 // We want the point to be mapped to the dragTarget. 2808 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2809 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2810 } else { 2811 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2812 } 2813 2814 ItemInfo info = (ItemInfo) d.dragInfo; 2815 2816 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2817 (int) mDragViewVisualCenter[1], item.spanX, item.spanY, 2818 mDragTargetLayout, mTargetCell); 2819 2820 setCurrentDropOverCell(mTargetCell[0], mTargetCell[1]); 2821 2822 float targetCellDistance = mDragTargetLayout.getDistanceFromCell( 2823 mDragViewVisualCenter[0], mDragViewVisualCenter[1], mTargetCell); 2824 2825 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2826 mTargetCell[1]); 2827 2828 manageFolderFeedback(info, mDragTargetLayout, mTargetCell, 2829 targetCellDistance, dragOverView); 2830 2831 int minSpanX = item.spanX; 2832 int minSpanY = item.spanY; 2833 if (item.minSpanX > 0 && item.minSpanY > 0) { 2834 minSpanX = item.minSpanX; 2835 minSpanY = item.minSpanY; 2836 } 2837 2838 boolean nearestDropOccupied = mDragTargetLayout.isNearestDropLocationOccupied((int) 2839 mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], item.spanX, 2840 item.spanY, child, mTargetCell); 2841 2842 if (!nearestDropOccupied) { 2843 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2844 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2845 mTargetCell[0], mTargetCell[1], item.spanX, item.spanY, false, 2846 d.dragView.getDragVisualizeOffset(), d.dragView.getDragRegion()); 2847 } else if ((mDragMode == DRAG_MODE_NONE || mDragMode == DRAG_MODE_REORDER) 2848 && !mReorderAlarm.alarmPending() && (mLastReorderX != mTargetCell[0] || 2849 mLastReorderY != mTargetCell[1])) { 2850 2851 // Otherwise, if we aren't adding to or creating a folder and there's no pending 2852 // reorder, then we schedule a reorder 2853 ReorderAlarmListener listener = new ReorderAlarmListener(mDragViewVisualCenter, 2854 minSpanX, minSpanY, item.spanX, item.spanY, d.dragView, child); 2855 mReorderAlarm.setOnAlarmListener(listener); 2856 mReorderAlarm.setAlarm(REORDER_TIMEOUT); 2857 } 2858 2859 if (mDragMode == DRAG_MODE_CREATE_FOLDER || mDragMode == DRAG_MODE_ADD_TO_FOLDER || 2860 !nearestDropOccupied) { 2861 if (mDragTargetLayout != null) { 2862 mDragTargetLayout.revertTempState(); 2863 } 2864 } 2865 } 2866 } 2867 2868 private void manageFolderFeedback(ItemInfo info, CellLayout targetLayout, 2869 int[] targetCell, float distance, View dragOverView) { 2870 boolean userFolderPending = willCreateUserFolder(info, targetLayout, targetCell, distance, 2871 false); 2872 2873 if (mDragMode == DRAG_MODE_NONE && userFolderPending && 2874 !mFolderCreationAlarm.alarmPending()) { 2875 mFolderCreationAlarm.setOnAlarmListener(new 2876 FolderCreationAlarmListener(targetLayout, targetCell[0], targetCell[1])); 2877 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2878 return; 2879 } 2880 2881 boolean willAddToFolder = 2882 willAddToExistingUserFolder(info, targetLayout, targetCell, distance); 2883 2884 if (willAddToFolder && mDragMode == DRAG_MODE_NONE) { 2885 mDragOverFolderIcon = ((FolderIcon) dragOverView); 2886 mDragOverFolderIcon.onDragEnter(info); 2887 if (targetLayout != null) { 2888 targetLayout.clearDragOutlines(); 2889 } 2890 setDragMode(DRAG_MODE_ADD_TO_FOLDER); 2891 return; 2892 } 2893 2894 if (mDragMode == DRAG_MODE_ADD_TO_FOLDER && !willAddToFolder) { 2895 setDragMode(DRAG_MODE_NONE); 2896 } 2897 if (mDragMode == DRAG_MODE_CREATE_FOLDER && !userFolderPending) { 2898 setDragMode(DRAG_MODE_NONE); 2899 } 2900 2901 return; 2902 } 2903 2904 class FolderCreationAlarmListener implements OnAlarmListener { 2905 CellLayout layout; 2906 int cellX; 2907 int cellY; 2908 2909 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 2910 this.layout = layout; 2911 this.cellX = cellX; 2912 this.cellY = cellY; 2913 } 2914 2915 public void onAlarm(Alarm alarm) { 2916 if (mDragFolderRingAnimator == null) { 2917 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 2918 } 2919 mDragFolderRingAnimator.setCell(cellX, cellY); 2920 mDragFolderRingAnimator.setCellLayout(layout); 2921 mDragFolderRingAnimator.animateToAcceptState(); 2922 layout.showFolderAccept(mDragFolderRingAnimator); 2923 layout.clearDragOutlines(); 2924 setDragMode(DRAG_MODE_CREATE_FOLDER); 2925 } 2926 } 2927 2928 class ReorderAlarmListener implements OnAlarmListener { 2929 float[] dragViewCenter; 2930 int minSpanX, minSpanY, spanX, spanY; 2931 DragView dragView; 2932 View child; 2933 2934 public ReorderAlarmListener(float[] dragViewCenter, int minSpanX, int minSpanY, int spanX, 2935 int spanY, DragView dragView, View child) { 2936 this.dragViewCenter = dragViewCenter; 2937 this.minSpanX = minSpanX; 2938 this.minSpanY = minSpanY; 2939 this.spanX = spanX; 2940 this.spanY = spanY; 2941 this.child = child; 2942 this.dragView = dragView; 2943 } 2944 2945 public void onAlarm(Alarm alarm) { 2946 int[] resultSpan = new int[2]; 2947 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2948 (int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell); 2949 mLastReorderX = mTargetCell[0]; 2950 mLastReorderY = mTargetCell[1]; 2951 2952 mTargetCell = mDragTargetLayout.createArea((int) mDragViewVisualCenter[0], 2953 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2954 child, mTargetCell, resultSpan, CellLayout.MODE_DRAG_OVER); 2955 2956 if (mTargetCell[0] < 0 || mTargetCell[1] < 0) { 2957 mDragTargetLayout.revertTempState(); 2958 } else { 2959 setDragMode(DRAG_MODE_REORDER); 2960 } 2961 2962 boolean resize = resultSpan[0] != spanX || resultSpan[1] != spanY; 2963 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2964 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2965 mTargetCell[0], mTargetCell[1], resultSpan[0], resultSpan[1], resize, 2966 dragView.getDragVisualizeOffset(), dragView.getDragRegion()); 2967 } 2968 } 2969 2970 @Override 2971 public void getHitRect(Rect outRect) { 2972 // We want the workspace to have the whole area of the display (it will find the correct 2973 // cell layout to drop to in the existing drag/drop logic. 2974 outRect.set(0, 0, mDisplaySize.x, mDisplaySize.y); 2975 } 2976 2977 /** 2978 * Add the item specified by dragInfo to the given layout. 2979 * @return true if successful 2980 */ 2981 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2982 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2983 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2984 return true; 2985 } 2986 mLauncher.showOutOfSpaceMessage(mLauncher.isHotseatLayout(layout)); 2987 return false; 2988 } 2989 2990 private void onDropExternal(int[] touchXY, Object dragInfo, 2991 CellLayout cellLayout, boolean insertAtFirst) { 2992 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 2993 } 2994 2995 /** 2996 * Drop an item that didn't originate on one of the workspace screens. 2997 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2998 * come from another app altogether. 2999 * 3000 * NOTE: This can also be called when we are outside of a drag event, when we want 3001 * to add an item to one of the workspace screens. 3002 */ 3003 private void onDropExternal(final int[] touchXY, final Object dragInfo, 3004 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 3005 final Runnable exitSpringLoadedRunnable = new Runnable() { 3006 @Override 3007 public void run() { 3008 mLauncher.exitSpringLoadedDragModeDelayed(true, false, null); 3009 } 3010 }; 3011 3012 ItemInfo info = (ItemInfo) dragInfo; 3013 int spanX = info.spanX; 3014 int spanY = info.spanY; 3015 if (mDragInfo != null) { 3016 spanX = mDragInfo.spanX; 3017 spanY = mDragInfo.spanY; 3018 } 3019 3020 final long container = mLauncher.isHotseatLayout(cellLayout) ? 3021 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 3022 LauncherSettings.Favorites.CONTAINER_DESKTOP; 3023 final int screen = indexOfChild(cellLayout); 3024 if (!mLauncher.isHotseatLayout(cellLayout) && screen != mCurrentPage 3025 && mState != State.SPRING_LOADED) { 3026 snapToPage(screen); 3027 } 3028 3029 if (info instanceof PendingAddItemInfo) { 3030 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 3031 3032 boolean findNearestVacantCell = true; 3033 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 3034 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3035 cellLayout, mTargetCell); 3036 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3037 mDragViewVisualCenter[1], mTargetCell); 3038 if (willCreateUserFolder((ItemInfo) d.dragInfo, cellLayout, mTargetCell, 3039 distance, true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 3040 cellLayout, mTargetCell, distance)) { 3041 findNearestVacantCell = false; 3042 } 3043 } 3044 3045 final ItemInfo item = (ItemInfo) d.dragInfo; 3046 boolean updateWidgetSize = Build.VERSION.SDK_INT <= Build.VERSION_CODES.JELLY_BEAN; 3047 if (findNearestVacantCell) { 3048 int minSpanX = item.spanX; 3049 int minSpanY = item.spanY; 3050 if (item.minSpanX > 0 && item.minSpanY > 0) { 3051 minSpanX = item.minSpanX; 3052 minSpanY = item.minSpanY; 3053 } 3054 int[] resultSpan = new int[2]; 3055 mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], 3056 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, info.spanX, info.spanY, 3057 null, mTargetCell, resultSpan, CellLayout.MODE_ON_DROP_EXTERNAL); 3058 3059 if (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY) { 3060 updateWidgetSize = true; 3061 } 3062 item.spanX = resultSpan[0]; 3063 item.spanY = resultSpan[1]; 3064 } 3065 3066 Runnable onAnimationCompleteRunnable = new Runnable() { 3067 @Override 3068 public void run() { 3069 // When dragging and dropping from customization tray, we deal with creating 3070 // widgets/shortcuts/folders in a slightly different way 3071 switch (pendingInfo.itemType) { 3072 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 3073 int span[] = new int[2]; 3074 span[0] = item.spanX; 3075 span[1] = item.spanY; 3076 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, 3077 container, screen, mTargetCell, span, null); 3078 break; 3079 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3080 mLauncher.processShortcutFromDrop(pendingInfo.componentName, 3081 container, screen, mTargetCell, null); 3082 break; 3083 default: 3084 throw new IllegalStateException("Unknown item type: " + 3085 pendingInfo.itemType); 3086 } 3087 } 3088 }; 3089 View finalView = pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET 3090 ? ((PendingAddWidgetInfo) pendingInfo).boundWidget : null; 3091 3092 if (finalView instanceof AppWidgetHostView && updateWidgetSize) { 3093 AppWidgetHostView awhv = (AppWidgetHostView) finalView; 3094 AppWidgetResizeFrame.updateWidgetSizeRanges(awhv, mLauncher, item.spanX, 3095 item.spanY); 3096 } 3097 3098 int animationStyle = ANIMATE_INTO_POSITION_AND_DISAPPEAR; 3099 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && 3100 ((PendingAddWidgetInfo) pendingInfo).info.configure != null) { 3101 animationStyle = ANIMATE_INTO_POSITION_AND_REMAIN; 3102 } 3103 animateWidgetDrop(info, cellLayout, d.dragView, onAnimationCompleteRunnable, 3104 animationStyle, finalView, true); 3105 } else { 3106 // This is for other drag/drop cases, like dragging from All Apps 3107 View view = null; 3108 3109 switch (info.itemType) { 3110 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 3111 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3112 if (info.container == NO_ID && info instanceof ApplicationInfo) { 3113 // Came from all apps -- make a copy 3114 info = new ShortcutInfo((ApplicationInfo) info); 3115 } 3116 view = mLauncher.createShortcut(R.layout.application, cellLayout, 3117 (ShortcutInfo) info); 3118 break; 3119 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 3120 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 3121 (FolderInfo) info, mIconCache); 3122 break; 3123 default: 3124 throw new IllegalStateException("Unknown item type: " + info.itemType); 3125 } 3126 3127 // First we find the cell nearest to point at which the item is 3128 // dropped, without any consideration to whether there is an item there. 3129 if (touchXY != null) { 3130 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3131 cellLayout, mTargetCell); 3132 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3133 mDragViewVisualCenter[1], mTargetCell); 3134 d.postAnimationRunnable = exitSpringLoadedRunnable; 3135 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, distance, 3136 true, d.dragView, d.postAnimationRunnable)) { 3137 return; 3138 } 3139 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, distance, d, 3140 true)) { 3141 return; 3142 } 3143 } 3144 3145 if (touchXY != null) { 3146 // when dragging and dropping, just find the closest free spot 3147 mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], 3148 (int) mDragViewVisualCenter[1], 1, 1, 1, 1, 3149 null, mTargetCell, null, CellLayout.MODE_ON_DROP_EXTERNAL); 3150 } else { 3151 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3152 } 3153 addInScreen(view, container, screen, mTargetCell[0], mTargetCell[1], info.spanX, 3154 info.spanY, insertAtFirst); 3155 cellLayout.onDropChild(view); 3156 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 3157 cellLayout.getShortcutsAndWidgets().measureChild(view); 3158 3159 3160 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, 3161 lp.cellX, lp.cellY); 3162 3163 if (d.dragView != null) { 3164 // We wrap the animation call in the temporary set and reset of the current 3165 // cellLayout to its final transform -- this means we animate the drag view to 3166 // the correct final location. 3167 setFinalTransitionTransform(cellLayout); 3168 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 3169 exitSpringLoadedRunnable); 3170 resetTransitionTransform(cellLayout); 3171 } 3172 } 3173 } 3174 3175 public Bitmap createWidgetBitmap(ItemInfo widgetInfo, View layout) { 3176 int[] unScaledSize = mLauncher.getWorkspace().estimateItemSize(widgetInfo.spanX, 3177 widgetInfo.spanY, widgetInfo, false); 3178 int visibility = layout.getVisibility(); 3179 layout.setVisibility(VISIBLE); 3180 3181 int width = MeasureSpec.makeMeasureSpec(unScaledSize[0], MeasureSpec.EXACTLY); 3182 int height = MeasureSpec.makeMeasureSpec(unScaledSize[1], MeasureSpec.EXACTLY); 3183 Bitmap b = Bitmap.createBitmap(unScaledSize[0], unScaledSize[1], 3184 Bitmap.Config.ARGB_8888); 3185 Canvas c = new Canvas(b); 3186 3187 layout.measure(width, height); 3188 layout.layout(0, 0, unScaledSize[0], unScaledSize[1]); 3189 layout.draw(c); 3190 c.setBitmap(null); 3191 layout.setVisibility(visibility); 3192 return b; 3193 } 3194 3195 private void getFinalPositionForDropAnimation(int[] loc, float[] scaleXY, 3196 DragView dragView, CellLayout layout, ItemInfo info, int[] targetCell, 3197 boolean external, boolean scale) { 3198 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 3199 // location and size on the home screen. 3200 int spanX = info.spanX; 3201 int spanY = info.spanY; 3202 3203 Rect r = estimateItemPosition(layout, info, targetCell[0], targetCell[1], spanX, spanY); 3204 loc[0] = r.left; 3205 loc[1] = r.top; 3206 3207 setFinalTransitionTransform(layout); 3208 float cellLayoutScale = 3209 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(layout, loc); 3210 resetTransitionTransform(layout); 3211 3212 float dragViewScaleX; 3213 float dragViewScaleY; 3214 if (scale) { 3215 dragViewScaleX = (1.0f * r.width()) / dragView.getMeasuredWidth(); 3216 dragViewScaleY = (1.0f * r.height()) / dragView.getMeasuredHeight(); 3217 } else { 3218 dragViewScaleX = 1f; 3219 dragViewScaleY = 1f; 3220 } 3221 3222 // The animation will scale the dragView about its center, so we need to center about 3223 // the final location. 3224 loc[0] -= (dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 3225 loc[1] -= (dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 3226 3227 scaleXY[0] = dragViewScaleX * cellLayoutScale; 3228 scaleXY[1] = dragViewScaleY * cellLayoutScale; 3229 } 3230 3231 public void animateWidgetDrop(ItemInfo info, CellLayout cellLayout, DragView dragView, 3232 final Runnable onCompleteRunnable, int animationType, final View finalView, 3233 boolean external) { 3234 Rect from = new Rect(); 3235 mLauncher.getDragLayer().getViewRectRelativeToSelf(dragView, from); 3236 3237 int[] finalPos = new int[2]; 3238 float scaleXY[] = new float[2]; 3239 boolean scalePreview = !(info instanceof PendingAddShortcutInfo); 3240 getFinalPositionForDropAnimation(finalPos, scaleXY, dragView, cellLayout, info, mTargetCell, 3241 external, scalePreview); 3242 3243 Resources res = mLauncher.getResources(); 3244 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration) - 200; 3245 3246 // In the case where we've prebound the widget, we remove it from the DragLayer 3247 if (finalView instanceof AppWidgetHostView && external) { 3248 Log.d(TAG, "6557954 Animate widget drop, final view is appWidgetHostView"); 3249 mLauncher.getDragLayer().removeView(finalView); 3250 } 3251 if ((animationType == ANIMATE_INTO_POSITION_AND_RESIZE || external) && finalView != null) { 3252 Bitmap crossFadeBitmap = createWidgetBitmap(info, finalView); 3253 dragView.setCrossFadeBitmap(crossFadeBitmap); 3254 dragView.crossFade((int) (duration * 0.8f)); 3255 } else if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && external) { 3256 scaleXY[0] = scaleXY[1] = Math.min(scaleXY[0], scaleXY[1]); 3257 } 3258 3259 DragLayer dragLayer = mLauncher.getDragLayer(); 3260 if (animationType == CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION) { 3261 mLauncher.getDragLayer().animateViewIntoPosition(dragView, finalPos, 0f, 0.1f, 0.1f, 3262 DragLayer.ANIMATION_END_DISAPPEAR, onCompleteRunnable, duration); 3263 } else { 3264 int endStyle; 3265 if (animationType == ANIMATE_INTO_POSITION_AND_REMAIN) { 3266 endStyle = DragLayer.ANIMATION_END_REMAIN_VISIBLE; 3267 } else { 3268 endStyle = DragLayer.ANIMATION_END_DISAPPEAR;; 3269 } 3270 3271 Runnable onComplete = new Runnable() { 3272 @Override 3273 public void run() { 3274 if (finalView != null) { 3275 finalView.setVisibility(VISIBLE); 3276 } 3277 if (onCompleteRunnable != null) { 3278 onCompleteRunnable.run(); 3279 } 3280 } 3281 }; 3282 dragLayer.animateViewIntoPosition(dragView, from.left, from.top, finalPos[0], 3283 finalPos[1], 1, 1, 1, scaleXY[0], scaleXY[1], onComplete, endStyle, 3284 duration, this); 3285 } 3286 } 3287 3288 public void setFinalTransitionTransform(CellLayout layout) { 3289 if (isSwitchingState()) { 3290 int index = indexOfChild(layout); 3291 mCurrentScaleX = layout.getScaleX(); 3292 mCurrentScaleY = layout.getScaleY(); 3293 mCurrentTranslationX = layout.getTranslationX(); 3294 mCurrentTranslationY = layout.getTranslationY(); 3295 mCurrentRotationY = layout.getRotationY(); 3296 layout.setScaleX(mNewScaleXs[index]); 3297 layout.setScaleY(mNewScaleYs[index]); 3298 layout.setTranslationX(mNewTranslationXs[index]); 3299 layout.setTranslationY(mNewTranslationYs[index]); 3300 layout.setRotationY(mNewRotationYs[index]); 3301 } 3302 } 3303 public void resetTransitionTransform(CellLayout layout) { 3304 if (isSwitchingState()) { 3305 mCurrentScaleX = layout.getScaleX(); 3306 mCurrentScaleY = layout.getScaleY(); 3307 mCurrentTranslationX = layout.getTranslationX(); 3308 mCurrentTranslationY = layout.getTranslationY(); 3309 mCurrentRotationY = layout.getRotationY(); 3310 layout.setScaleX(mCurrentScaleX); 3311 layout.setScaleY(mCurrentScaleY); 3312 layout.setTranslationX(mCurrentTranslationX); 3313 layout.setTranslationY(mCurrentTranslationY); 3314 layout.setRotationY(mCurrentRotationY); 3315 } 3316 } 3317 3318 /** 3319 * Return the current {@link CellLayout}, correctly picking the destination 3320 * screen while a scroll is in progress. 3321 */ 3322 public CellLayout getCurrentDropLayout() { 3323 return (CellLayout) getChildAt(getNextPage()); 3324 } 3325 3326 /** 3327 * Return the current CellInfo describing our current drag; this method exists 3328 * so that Launcher can sync this object with the correct info when the activity is created/ 3329 * destroyed 3330 * 3331 */ 3332 public CellLayout.CellInfo getDragInfo() { 3333 return mDragInfo; 3334 } 3335 3336 /** 3337 * Calculate the nearest cell where the given object would be dropped. 3338 * 3339 * pixelX and pixelY should be in the coordinate system of layout 3340 */ 3341 private int[] findNearestArea(int pixelX, int pixelY, 3342 int spanX, int spanY, CellLayout layout, int[] recycle) { 3343 return layout.findNearestArea( 3344 pixelX, pixelY, spanX, spanY, recycle); 3345 } 3346 3347 void setup(DragController dragController) { 3348 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3349 mDragController = dragController; 3350 3351 // hardware layers on children are enabled on startup, but should be disabled until 3352 // needed 3353 updateChildrenLayersEnabled(false); 3354 setWallpaperDimension(); 3355 } 3356 3357 /** 3358 * Called at the end of a drag which originated on the workspace. 3359 */ 3360 public void onDropCompleted(View target, DragObject d, boolean isFlingToDelete, 3361 boolean success) { 3362 if (success) { 3363 if (target != this) { 3364 if (mDragInfo != null) { 3365 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 3366 if (mDragInfo.cell instanceof DropTarget) { 3367 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 3368 } 3369 } 3370 } 3371 } else if (mDragInfo != null) { 3372 CellLayout cellLayout; 3373 if (mLauncher.isHotseatLayout(target)) { 3374 cellLayout = mLauncher.getHotseat().getLayout(); 3375 } else { 3376 cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3377 } 3378 cellLayout.onDropChild(mDragInfo.cell); 3379 } 3380 if (d.cancelled && mDragInfo.cell != null) { 3381 mDragInfo.cell.setVisibility(VISIBLE); 3382 } 3383 mDragOutline = null; 3384 mDragInfo = null; 3385 3386 // Hide the scrolling indicator after you pick up an item 3387 hideScrollingIndicator(false); 3388 } 3389 3390 void updateItemLocationsInDatabase(CellLayout cl) { 3391 int count = cl.getShortcutsAndWidgets().getChildCount(); 3392 3393 int screen = indexOfChild(cl); 3394 int container = Favorites.CONTAINER_DESKTOP; 3395 3396 if (mLauncher.isHotseatLayout(cl)) { 3397 screen = -1; 3398 container = Favorites.CONTAINER_HOTSEAT; 3399 } 3400 3401 for (int i = 0; i < count; i++) { 3402 View v = cl.getShortcutsAndWidgets().getChildAt(i); 3403 ItemInfo info = (ItemInfo) v.getTag(); 3404 // Null check required as the AllApps button doesn't have an item info 3405 if (info != null && info.requiresDbUpdate) { 3406 info.requiresDbUpdate = false; 3407 LauncherModel.modifyItemInDatabase(mLauncher, info, container, screen, info.cellX, 3408 info.cellY, info.spanX, info.spanY); 3409 } 3410 } 3411 } 3412 3413 @Override 3414 public boolean supportsFlingToDelete() { 3415 return true; 3416 } 3417 3418 @Override 3419 public void onFlingToDelete(DragObject d, int x, int y, PointF vec) { 3420 // Do nothing 3421 } 3422 3423 @Override 3424 public void onFlingToDeleteCompleted() { 3425 // Do nothing 3426 } 3427 3428 public boolean isDropEnabled() { 3429 return true; 3430 } 3431 3432 @Override 3433 protected void onRestoreInstanceState(Parcelable state) { 3434 super.onRestoreInstanceState(state); 3435 Launcher.setScreen(mCurrentPage); 3436 } 3437 3438 @Override 3439 protected void dispatchRestoreInstanceState(SparseArray<Parcelable> container) { 3440 // We don't dispatch restoreInstanceState to our children using this code path. 3441 // Some pages will be restored immediately as their items are bound immediately, and 3442 // others we will need to wait until after their items are bound. 3443 mSavedStates = container; 3444 } 3445 3446 public void restoreInstanceStateForChild(int child) { 3447 if (mSavedStates != null) { 3448 mRestoredPages.add(child); 3449 CellLayout cl = (CellLayout) getChildAt(child); 3450 cl.restoreInstanceState(mSavedStates); 3451 } 3452 } 3453 3454 public void restoreInstanceStateForRemainingPages() { 3455 int count = getChildCount(); 3456 for (int i = 0; i < count; i++) { 3457 if (!mRestoredPages.contains(i)) { 3458 restoreInstanceStateForChild(i); 3459 } 3460 } 3461 mRestoredPages.clear(); 3462 } 3463 3464 @Override 3465 public void scrollLeft() { 3466 if (!isSmall() && !mIsSwitchingState) { 3467 super.scrollLeft(); 3468 } 3469 Folder openFolder = getOpenFolder(); 3470 if (openFolder != null) { 3471 openFolder.completeDragExit(); 3472 } 3473 } 3474 3475 @Override 3476 public void scrollRight() { 3477 if (!isSmall() && !mIsSwitchingState) { 3478 super.scrollRight(); 3479 } 3480 Folder openFolder = getOpenFolder(); 3481 if (openFolder != null) { 3482 openFolder.completeDragExit(); 3483 } 3484 } 3485 3486 @Override 3487 public boolean onEnterScrollArea(int x, int y, int direction) { 3488 // Ignore the scroll area if we are dragging over the hot seat 3489 boolean isPortrait = !LauncherApplication.isScreenLandscape(getContext()); 3490 if (mLauncher.getHotseat() != null && isPortrait) { 3491 Rect r = new Rect(); 3492 mLauncher.getHotseat().getHitRect(r); 3493 if (r.contains(x, y)) { 3494 return false; 3495 } 3496 } 3497 3498 boolean result = false; 3499 if (!isSmall() && !mIsSwitchingState) { 3500 mInScrollArea = true; 3501 3502 final int page = getNextPage() + 3503 (direction == DragController.SCROLL_LEFT ? -1 : 1); 3504 3505 // We always want to exit the current layout to ensure parity of enter / exit 3506 setCurrentDropLayout(null); 3507 3508 if (0 <= page && page < getChildCount()) { 3509 CellLayout layout = (CellLayout) getChildAt(page); 3510 setCurrentDragOverlappingLayout(layout); 3511 3512 // Workspace is responsible for drawing the edge glow on adjacent pages, 3513 // so we need to redraw the workspace when this may have changed. 3514 invalidate(); 3515 result = true; 3516 } 3517 } 3518 return result; 3519 } 3520 3521 @Override 3522 public boolean onExitScrollArea() { 3523 boolean result = false; 3524 if (mInScrollArea) { 3525 invalidate(); 3526 CellLayout layout = getCurrentDropLayout(); 3527 setCurrentDropLayout(layout); 3528 setCurrentDragOverlappingLayout(layout); 3529 3530 result = true; 3531 mInScrollArea = false; 3532 } 3533 return result; 3534 } 3535 3536 private void onResetScrollArea() { 3537 setCurrentDragOverlappingLayout(null); 3538 mInScrollArea = false; 3539 } 3540 3541 /** 3542 * Returns a specific CellLayout 3543 */ 3544 CellLayout getParentCellLayoutForView(View v) { 3545 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3546 for (CellLayout layout : layouts) { 3547 if (layout.getShortcutsAndWidgets().indexOfChild(v) > -1) { 3548 return layout; 3549 } 3550 } 3551 return null; 3552 } 3553 3554 /** 3555 * Returns a list of all the CellLayouts in the workspace. 3556 */ 3557 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3558 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3559 int screenCount = getChildCount(); 3560 for (int screen = 0; screen < screenCount; screen++) { 3561 layouts.add(((CellLayout) getChildAt(screen))); 3562 } 3563 if (mLauncher.getHotseat() != null) { 3564 layouts.add(mLauncher.getHotseat().getLayout()); 3565 } 3566 return layouts; 3567 } 3568 3569 /** 3570 * We should only use this to search for specific children. Do not use this method to modify 3571 * ShortcutsAndWidgetsContainer directly. Includes ShortcutAndWidgetContainers from 3572 * the hotseat and workspace pages 3573 */ 3574 ArrayList<ShortcutAndWidgetContainer> getAllShortcutAndWidgetContainers() { 3575 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3576 new ArrayList<ShortcutAndWidgetContainer>(); 3577 int screenCount = getChildCount(); 3578 for (int screen = 0; screen < screenCount; screen++) { 3579 childrenLayouts.add(((CellLayout) getChildAt(screen)).getShortcutsAndWidgets()); 3580 } 3581 if (mLauncher.getHotseat() != null) { 3582 childrenLayouts.add(mLauncher.getHotseat().getLayout().getShortcutsAndWidgets()); 3583 } 3584 return childrenLayouts; 3585 } 3586 3587 public Folder getFolderForTag(Object tag) { 3588 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3589 getAllShortcutAndWidgetContainers(); 3590 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3591 int count = layout.getChildCount(); 3592 for (int i = 0; i < count; i++) { 3593 View child = layout.getChildAt(i); 3594 if (child instanceof Folder) { 3595 Folder f = (Folder) child; 3596 if (f.getInfo() == tag && f.getInfo().opened) { 3597 return f; 3598 } 3599 } 3600 } 3601 } 3602 return null; 3603 } 3604 3605 public View getViewForTag(Object tag) { 3606 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3607 getAllShortcutAndWidgetContainers(); 3608 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3609 int count = layout.getChildCount(); 3610 for (int i = 0; i < count; i++) { 3611 View child = layout.getChildAt(i); 3612 if (child.getTag() == tag) { 3613 return child; 3614 } 3615 } 3616 } 3617 return null; 3618 } 3619 3620 void clearDropTargets() { 3621 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3622 getAllShortcutAndWidgetContainers(); 3623 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3624 int childCount = layout.getChildCount(); 3625 for (int j = 0; j < childCount; j++) { 3626 View v = layout.getChildAt(j); 3627 if (v instanceof DropTarget) { 3628 mDragController.removeDropTarget((DropTarget) v); 3629 } 3630 } 3631 } 3632 } 3633 3634 void removeItems(final ArrayList<String> packages) { 3635 final HashSet<String> packageNames = new HashSet<String>(); 3636 packageNames.addAll(packages); 3637 3638 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3639 for (final CellLayout layoutParent: cellLayouts) { 3640 final ViewGroup layout = layoutParent.getShortcutsAndWidgets(); 3641 3642 // Avoid ANRs by treating each screen separately 3643 post(new Runnable() { 3644 public void run() { 3645 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3646 childrenToRemove.clear(); 3647 3648 int childCount = layout.getChildCount(); 3649 for (int j = 0; j < childCount; j++) { 3650 final View view = layout.getChildAt(j); 3651 Object tag = view.getTag(); 3652 3653 if (tag instanceof ShortcutInfo) { 3654 final ShortcutInfo info = (ShortcutInfo) tag; 3655 final Intent intent = info.intent; 3656 final ComponentName name = intent.getComponent(); 3657 3658 if (name != null) { 3659 if (packageNames.contains(name.getPackageName())) { 3660 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3661 childrenToRemove.add(view); 3662 } 3663 } 3664 } else if (tag instanceof FolderInfo) { 3665 final FolderInfo info = (FolderInfo) tag; 3666 final ArrayList<ShortcutInfo> contents = info.contents; 3667 final int contentsCount = contents.size(); 3668 final ArrayList<ShortcutInfo> appsToRemoveFromFolder = 3669 new ArrayList<ShortcutInfo>(); 3670 3671 for (int k = 0; k < contentsCount; k++) { 3672 final ShortcutInfo appInfo = contents.get(k); 3673 final Intent intent = appInfo.intent; 3674 final ComponentName name = intent.getComponent(); 3675 3676 if (name != null) { 3677 if (packageNames.contains(name.getPackageName())) { 3678 appsToRemoveFromFolder.add(appInfo); 3679 } 3680 } 3681 } 3682 for (ShortcutInfo item: appsToRemoveFromFolder) { 3683 info.remove(item); 3684 LauncherModel.deleteItemFromDatabase(mLauncher, item); 3685 } 3686 } else if (tag instanceof LauncherAppWidgetInfo) { 3687 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3688 final ComponentName provider = info.providerName; 3689 if (provider != null) { 3690 if (packageNames.contains(provider.getPackageName())) { 3691 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3692 childrenToRemove.add(view); 3693 } 3694 } 3695 } 3696 } 3697 3698 childCount = childrenToRemove.size(); 3699 for (int j = 0; j < childCount; j++) { 3700 View child = childrenToRemove.get(j); 3701 // Note: We can not remove the view directly from CellLayoutChildren as this 3702 // does not re-mark the spaces as unoccupied. 3703 layoutParent.removeViewInLayout(child); 3704 if (child instanceof DropTarget) { 3705 mDragController.removeDropTarget((DropTarget)child); 3706 } 3707 } 3708 3709 if (childCount > 0) { 3710 layout.requestLayout(); 3711 layout.invalidate(); 3712 } 3713 } 3714 }); 3715 } 3716 3717 // Clean up new-apps animation list 3718 final Context context = getContext(); 3719 post(new Runnable() { 3720 @Override 3721 public void run() { 3722 String spKey = LauncherApplication.getSharedPreferencesKey(); 3723 SharedPreferences sp = context.getSharedPreferences(spKey, 3724 Context.MODE_PRIVATE); 3725 Set<String> newApps = sp.getStringSet(InstallShortcutReceiver.NEW_APPS_LIST_KEY, 3726 null); 3727 3728 // Remove all queued items that match the same package 3729 if (newApps != null) { 3730 synchronized (newApps) { 3731 Iterator<String> iter = newApps.iterator(); 3732 while (iter.hasNext()) { 3733 try { 3734 Intent intent = Intent.parseUri(iter.next(), 0); 3735 String pn = ItemInfo.getPackageName(intent); 3736 if (packageNames.contains(pn)) { 3737 iter.remove(); 3738 } 3739 3740 // It is possible that we've queued an item to be loaded, yet it has 3741 // not been added to the workspace, so remove those items as well. 3742 ArrayList<ItemInfo> shortcuts; 3743 shortcuts = LauncherModel.getWorkspaceShortcutItemInfosWithIntent( 3744 intent); 3745 for (ItemInfo info : shortcuts) { 3746 LauncherModel.deleteItemFromDatabase(context, info); 3747 } 3748 } catch (URISyntaxException e) {} 3749 } 3750 } 3751 } 3752 } 3753 }); 3754 } 3755 3756 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3757 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = getAllShortcutAndWidgetContainers(); 3758 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3759 int childCount = layout.getChildCount(); 3760 for (int j = 0; j < childCount; j++) { 3761 final View view = layout.getChildAt(j); 3762 Object tag = view.getTag(); 3763 if (tag instanceof ShortcutInfo) { 3764 ShortcutInfo info = (ShortcutInfo) tag; 3765 // We need to check for ACTION_MAIN otherwise getComponent() might 3766 // return null for some shortcuts (for instance, for shortcuts to 3767 // web pages.) 3768 final Intent intent = info.intent; 3769 final ComponentName name = intent.getComponent(); 3770 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3771 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3772 final int appCount = apps.size(); 3773 for (int k = 0; k < appCount; k++) { 3774 ApplicationInfo app = apps.get(k); 3775 if (app.componentName.equals(name)) { 3776 BubbleTextView shortcut = (BubbleTextView) view; 3777 info.updateIcon(mIconCache); 3778 info.title = app.title.toString(); 3779 shortcut.applyFromShortcutInfo(info, mIconCache); 3780 } 3781 } 3782 } 3783 } 3784 } 3785 } 3786 } 3787 3788 void moveToDefaultScreen(boolean animate) { 3789 if (!isSmall()) { 3790 if (animate) { 3791 snapToPage(mDefaultPage); 3792 } else { 3793 setCurrentPage(mDefaultPage); 3794 } 3795 } 3796 getChildAt(mDefaultPage).requestFocus(); 3797 } 3798 3799 @Override 3800 public void syncPages() { 3801 } 3802 3803 @Override 3804 public void syncPageItems(int page, boolean immediate) { 3805 } 3806 3807 @Override 3808 protected String getCurrentPageDescription() { 3809 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 3810 return String.format(getContext().getString(R.string.workspace_scroll_format), 3811 page + 1, getChildCount()); 3812 } 3813 3814 public void getLocationInDragLayer(int[] loc) { 3815 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 3816 } 3817 3818 void setFadeForOverScroll(float fade) { 3819 if (!isScrollingIndicatorEnabled()) return; 3820 3821 mOverscrollFade = fade; 3822 float reducedFade = 0.5f + 0.5f * (1 - fade); 3823 final ViewGroup parent = (ViewGroup) getParent(); 3824 final ImageView qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3825 final ImageView dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3826 final View scrollIndicator = getScrollingIndicator(); 3827 3828 cancelScrollingIndicatorAnimations(); 3829 if (qsbDivider != null) qsbDivider.setAlpha(reducedFade); 3830 if (dockDivider != null) dockDivider.setAlpha(reducedFade); 3831 scrollIndicator.setAlpha(1 - fade); 3832 } 3833} 3834