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 17 package com.android.launcher2; 18 19 import android.animation.Animator; 20 import android.animation.AnimatorSet; 21 import android.animation.ObjectAnimator; 22 import android.animation.TimeInterpolator; 23 import android.animation.ValueAnimator; 24 import android.animation.ValueAnimator.AnimatorUpdateListener; 25 import android.app.WallpaperManager; 26 import android.appwidget.AppWidgetHostView; 27 import android.appwidget.AppWidgetProviderInfo; 28 import android.content.ComponentName; 29 import android.content.Context; 30 import android.content.Intent; 31 import android.content.SharedPreferences; 32 import android.content.res.Resources; 33 import android.content.res.TypedArray; 34 import android.graphics.Bitmap; 35 import android.graphics.Canvas; 36 import android.graphics.Matrix; 37 import android.graphics.Point; 38 import android.graphics.PointF; 39 import android.graphics.Rect; 40 import android.graphics.Region.Op; 41 import android.graphics.drawable.Drawable; 42 import android.os.Build; 43 import android.os.IBinder; 44 import android.os.Parcelable; 45 import android.util.AttributeSet; 46 import android.util.Log; 47 import android.util.SparseArray; 48 import android.view.Display; 49 import android.view.MotionEvent; 50 import android.view.View; 51 import android.view.ViewGroup; 52 import android.view.animation.DecelerateInterpolator; 53 import android.widget.ImageView; 54 import android.widget.TextView; 55 56 import com.android.launcher.R; 57 import com.android.launcher2.FolderIcon.FolderRingAnimator; 58 import com.android.launcher2.LauncherSettings.Favorites; 59 60 import java.net.URISyntaxException; 61 import java.util.ArrayList; 62 import java.util.HashSet; 63 import java.util.Iterator; 64 import 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 */ 71 public 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 private int mOriginalPageSpacing; 102 103 private final WallpaperManager mWallpaperManager; 104 private IBinder mWindowToken; 105 private static final float WALLPAPER_SCREENS_SPAN = 2f; 106 107 private int mDefaultPage; 108 109 /** 110 * CellInfo for the cell that is currently being dragged 111 */ 112 private CellLayout.CellInfo mDragInfo; 113 114 /** 115 * Target drop area calculated during last acceptDrop call. 116 */ 117 private int[] mTargetCell = new int[2]; 118 private int mDragOverX = -1; 119 private int mDragOverY = -1; 120 121 static Rect mLandscapeCellLayoutMetrics = null; 122 static Rect mPortraitCellLayoutMetrics = null; 123 124 /** 125 * The CellLayout that is currently being dragged over 126 */ 127 private CellLayout mDragTargetLayout = null; 128 /** 129 * The CellLayout that we will show as glowing 130 */ 131 private CellLayout mDragOverlappingLayout = null; 132 133 /** 134 * The CellLayout which will be dropped to 135 */ 136 private CellLayout mDropToLayout = null; 137 138 private Launcher mLauncher; 139 private IconCache mIconCache; 140 private DragController mDragController; 141 142 // These are temporary variables to prevent having to allocate a new object just to 143 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 144 private int[] mTempCell = new int[2]; 145 private int[] mTempEstimate = new int[2]; 146 private float[] mDragViewVisualCenter = new float[2]; 147 private float[] mTempDragCoordinates = new float[2]; 148 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 149 private float[] mTempDragBottomRightCoordinates = new float[2]; 150 private Matrix mTempInverseMatrix = new Matrix(); 151 152 private SpringLoadedDragController mSpringLoadedDragController; 153 private float mSpringLoadedShrinkFactor; 154 155 private static final int DEFAULT_CELL_COUNT_X = 4; 156 private static final int DEFAULT_CELL_COUNT_Y = 4; 157 158 // State variable that indicates whether the pages are small (ie when you're 159 // in all apps or customize mode) 160 161 enum State { NORMAL, SPRING_LOADED, SMALL }; 162 private State mState = State.NORMAL; 163 private boolean mIsSwitchingState = false; 164 165 boolean mAnimatingViewIntoPlace = false; 166 boolean mIsDragOccuring = false; 167 boolean mChildrenLayersEnabled = true; 168 169 /** Is the user is dragging an item near the edge of a page? */ 170 private boolean mInScrollArea = false; 171 172 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 173 private Bitmap mDragOutline = null; 174 private final Rect mTempRect = new Rect(); 175 private final int[] mTempXY = new int[2]; 176 private int[] mTempVisiblePagesRange = new int[2]; 177 private float mOverscrollFade = 0; 178 private boolean mOverscrollTransformsSet; 179 public static final int DRAG_BITMAP_PADDING = 2; 180 private boolean mWorkspaceFadeInAdjacentScreens; 181 182 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 183 int mWallpaperWidth; 184 int mWallpaperHeight; 185 WallpaperOffsetInterpolator mWallpaperOffset; 186 boolean mUpdateWallpaperOffsetImmediately = false; 187 private Runnable mDelayedResizeRunnable; 188 private Runnable mDelayedSnapToPageRunnable; 189 private Point mDisplaySize = new Point(); 190 private boolean mIsStaticWallpaper; 191 private int mWallpaperTravelWidth; 192 private int mSpringLoadedPageSpacing; 193 private int mCameraDistance; 194 195 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 196 private static final int FOLDER_CREATION_TIMEOUT = 0; 197 private static final int REORDER_TIMEOUT = 250; 198 private final Alarm mFolderCreationAlarm = new Alarm(); 199 private final Alarm mReorderAlarm = new Alarm(); 200 private FolderRingAnimator mDragFolderRingAnimator = null; 201 private FolderIcon mDragOverFolderIcon = null; 202 private boolean mCreateUserFolderOnDrop = false; 203 private boolean mAddToExistingFolderOnDrop = false; 204 private DropTarget.DragEnforcer mDragEnforcer; 205 private float mMaxDistanceForFolderCreation; 206 207 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 208 private float mXDown; 209 private float mYDown; 210 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 211 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 212 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 213 214 // Relating to the animation of items being dropped externally 215 public static final int ANIMATE_INTO_POSITION_AND_DISAPPEAR = 0; 216 public static final int ANIMATE_INTO_POSITION_AND_REMAIN = 1; 217 public static final int ANIMATE_INTO_POSITION_AND_RESIZE = 2; 218 public static final int COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION = 3; 219 public static final int CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION = 4; 220 221 // Related to dragging, folder creation and reordering 222 private static final int DRAG_MODE_NONE = 0; 223 private static final int DRAG_MODE_CREATE_FOLDER = 1; 224 private static final int DRAG_MODE_ADD_TO_FOLDER = 2; 225 private static final int DRAG_MODE_REORDER = 3; 226 private int mDragMode = DRAG_MODE_NONE; 227 private int mLastReorderX = -1; 228 private int mLastReorderY = -1; 229 230 private SparseArray<Parcelable> mSavedStates; 231 private final ArrayList<Integer> mRestoredPages = new ArrayList<Integer>(); 232 233 // These variables are used for storing the initial and final values during workspace animations 234 private int mSavedScrollX; 235 private float mSavedRotationY; 236 private float mSavedTranslationX; 237 private float mCurrentScaleX; 238 private float mCurrentScaleY; 239 private float mCurrentRotationY; 240 private float mCurrentTranslationX; 241 private float mCurrentTranslationY; 242 private float[] mOldTranslationXs; 243 private float[] mOldTranslationYs; 244 private float[] mOldScaleXs; 245 private float[] mOldScaleYs; 246 private float[] mOldBackgroundAlphas; 247 private float[] mOldAlphas; 248 private float[] mNewTranslationXs; 249 private float[] mNewTranslationYs; 250 private float[] mNewScaleXs; 251 private float[] mNewScaleYs; 252 private float[] mNewBackgroundAlphas; 253 private float[] mNewAlphas; 254 private float[] mNewRotationYs; 255 private float mTransitionProgress; 256 257 private final Runnable mBindPages = new Runnable() { 258 @Override 259 public void run() { 260 mLauncher.getModel().bindRemainingSynchronousPages(); 261 } 262 }; 263 264 /** 265 * Used to inflate the Workspace from XML. 266 * 267 * @param context The application's context. 268 * @param attrs The attributes set containing the Workspace's customization values. 269 */ 270 public Workspace(Context context, AttributeSet attrs) { 271 this(context, attrs, 0); 272 } 273 274 /** 275 * Used to inflate the Workspace from XML. 276 * 277 * @param context The application's context. 278 * @param attrs The attributes set containing the Workspace's customization values. 279 * @param defStyle Unused. 280 */ 281 public Workspace(Context context, AttributeSet attrs, int defStyle) { 282 super(context, attrs, defStyle); 283 mContentIsRefreshable = false; 284 mOriginalPageSpacing = mPageSpacing; 285 286 mDragEnforcer = new DropTarget.DragEnforcer(context); 287 // With workspace, data is available straight from the get-go 288 setDataIsReady(); 289 290 mLauncher = (Launcher) context; 291 final Resources res = getResources(); 292 mWorkspaceFadeInAdjacentScreens = res.getBoolean(R.bool.config_workspaceFadeAdjacentScreens); 293 mFadeInAdjacentScreens = false; 294 mWallpaperManager = WallpaperManager.getInstance(context); 295 296 int cellCountX = DEFAULT_CELL_COUNT_X; 297 int cellCountY = DEFAULT_CELL_COUNT_Y; 298 299 TypedArray a = context.obtainStyledAttributes(attrs, 300 R.styleable.Workspace, defStyle, 0); 301 302 if (LauncherApplication.isScreenLarge()) { 303 // Determine number of rows/columns dynamically 304 // TODO: This code currently fails on tablets with an aspect ratio < 1.3. 305 // Around that ratio we should make cells the same size in portrait and 306 // landscape 307 TypedArray actionBarSizeTypedArray = 308 context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize }); 309 final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); 310 311 Point minDims = new Point(); 312 Point maxDims = new Point(); 313 mLauncher.getWindowManager().getDefaultDisplay().getCurrentSizeRange(minDims, maxDims); 314 315 cellCountX = 1; 316 while (CellLayout.widthInPortrait(res, cellCountX + 1) <= minDims.x) { 317 cellCountX++; 318 } 319 320 cellCountY = 1; 321 while (actionBarHeight + CellLayout.heightInLandscape(res, cellCountY + 1) 322 <= minDims.y) { 323 cellCountY++; 324 } 325 } 326 327 mSpringLoadedShrinkFactor = 328 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 329 mSpringLoadedPageSpacing = 330 res.getDimensionPixelSize(R.dimen.workspace_spring_loaded_page_spacing); 331 mCameraDistance = res.getInteger(R.integer.config_cameraDistance); 332 333 // if the value is manually specified, use that instead 334 cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX); 335 cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY); 336 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 337 a.recycle(); 338 339 setOnHierarchyChangeListener(this); 340 341 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 342 setHapticFeedbackEnabled(false); 343 344 initWorkspace(); 345 346 // Disable multitouch across the workspace/all apps/customize tray 347 setMotionEventSplittingEnabled(true); 348 349 // Unless otherwise specified this view is important for accessibility. 350 if (getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 351 setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 352 } 353 } 354 355 // estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each 356 // dimension if unsuccessful 357 public int[] estimateItemSize(int hSpan, int vSpan, 358 ItemInfo itemInfo, boolean springLoaded) { 359 int[] size = new int[2]; 360 if (getChildCount() > 0) { 361 CellLayout cl = (CellLayout) mLauncher.getWorkspace().getChildAt(0); 362 Rect r = estimateItemPosition(cl, itemInfo, 0, 0, hSpan, vSpan); 363 size[0] = r.width(); 364 size[1] = r.height(); 365 if (springLoaded) { 366 size[0] *= mSpringLoadedShrinkFactor; 367 size[1] *= mSpringLoadedShrinkFactor; 368 } 369 return size; 370 } else { 371 size[0] = Integer.MAX_VALUE; 372 size[1] = Integer.MAX_VALUE; 373 return size; 374 } 375 } 376 public Rect estimateItemPosition(CellLayout cl, ItemInfo pendingInfo, 377 int hCell, int vCell, int hSpan, int vSpan) { 378 Rect r = new Rect(); 379 cl.cellToRect(hCell, vCell, hSpan, vSpan, r); 380 return r; 381 } 382 383 public void onDragStart(DragSource source, Object info, int dragAction) { 384 mIsDragOccuring = true; 385 updateChildrenLayersEnabled(false); 386 mLauncher.lockScreenOrientation(); 387 setChildrenBackgroundAlphaMultipliers(1f); 388 // Prevent any Un/InstallShortcutReceivers from updating the db while we are dragging 389 InstallShortcutReceiver.enableInstallQueue(); 390 UninstallShortcutReceiver.enableUninstallQueue(); 391 } 392 393 public void onDragEnd() { 394 mIsDragOccuring = false; 395 updateChildrenLayersEnabled(false); 396 mLauncher.unlockScreenOrientation(false); 397 398 // Re-enable any Un/InstallShortcutReceiver and now process any queued items 399 InstallShortcutReceiver.disableAndFlushInstallQueue(getContext()); 400 UninstallShortcutReceiver.disableAndFlushUninstallQueue(getContext()); 401 } 402 403 /** 404 * Initializes various states for this workspace. 405 */ 406 protected void initWorkspace() { 407 Context context = getContext(); 408 mCurrentPage = mDefaultPage; 409 Launcher.setScreen(mCurrentPage); 410 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 411 mIconCache = app.getIconCache(); 412 setWillNotDraw(false); 413 setChildrenDrawnWithCacheEnabled(true); 414 415 final Resources res = getResources(); 416 try { 417 mBackground = res.getDrawable(R.drawable.apps_customize_bg); 418 } catch (Resources.NotFoundException e) { 419 // In this case, we will skip drawing background protection 420 } 421 422 mWallpaperOffset = new WallpaperOffsetInterpolator(); 423 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 424 display.getSize(mDisplaySize); 425 mWallpaperTravelWidth = (int) (mDisplaySize.x * 426 wallpaperTravelToScreenWidthRatio(mDisplaySize.x, mDisplaySize.y)); 427 428 mMaxDistanceForFolderCreation = (0.55f * res.getDimensionPixelSize(R.dimen.app_icon_size)); 429 mFlingThresholdVelocity = (int) (FLING_THRESHOLD_VELOCITY * mDensity); 430 } 431 432 @Override 433 protected int getScrollMode() { 434 return SmoothPagedView.X_LARGE_MODE; 435 } 436 437 @Override 438 public void onChildViewAdded(View parent, View child) { 439 if (!(child instanceof CellLayout)) { 440 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 441 } 442 CellLayout cl = ((CellLayout) child); 443 cl.setOnInterceptTouchListener(this); 444 cl.setClickable(true); 445 cl.setContentDescription(getContext().getString( 446 R.string.workspace_description_format, getChildCount())); 447 } 448 449 @Override 450 public void onChildViewRemoved(View parent, View child) { 451 } 452 453 protected boolean shouldDrawChild(View child) { 454 final CellLayout cl = (CellLayout) child; 455 return super.shouldDrawChild(child) && 456 (cl.getShortcutsAndWidgets().getAlpha() > 0 || 457 cl.getBackgroundAlpha() > 0); 458 } 459 460 /** 461 * @return The open folder on the current screen, or null if there is none 462 */ 463 Folder getOpenFolder() { 464 DragLayer dragLayer = mLauncher.getDragLayer(); 465 int count = dragLayer.getChildCount(); 466 for (int i = 0; i < count; i++) { 467 View child = dragLayer.getChildAt(i); 468 if (child instanceof Folder) { 469 Folder folder = (Folder) child; 470 if (folder.getInfo().opened) 471 return folder; 472 } 473 } 474 return null; 475 } 476 477 boolean isTouchActive() { 478 return mTouchState != TOUCH_STATE_REST; 479 } 480 481 /** 482 * Adds the specified child in the specified screen. The position and dimension of 483 * the child are defined by x, y, spanX and spanY. 484 * 485 * @param child The child to add in one of the workspace's screens. 486 * @param screen The screen in which to add the child. 487 * @param x The X position of the child in the screen's grid. 488 * @param y The Y position of the child in the screen's grid. 489 * @param spanX The number of cells spanned horizontally by the child. 490 * @param spanY The number of cells spanned vertically by the child. 491 */ 492 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY) { 493 addInScreen(child, container, screen, x, y, spanX, spanY, false); 494 } 495 496 /** 497 * Adds the specified child in the specified screen. The position and dimension of 498 * the child are defined by x, y, spanX and spanY. 499 * 500 * @param child The child to add in one of the workspace's screens. 501 * @param screen The screen in which to add the child. 502 * @param x The X position of the child in the screen's grid. 503 * @param y The Y position of the child in the screen's grid. 504 * @param spanX The number of cells spanned horizontally by the child. 505 * @param spanY The number of cells spanned vertically by the child. 506 * @param insert When true, the child is inserted at the beginning of the children list. 507 */ 508 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY, 509 boolean insert) { 510 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 511 if (screen < 0 || screen >= getChildCount()) { 512 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 513 + " (was " + screen + "); skipping child"); 514 return; 515 } 516 } 517 518 final CellLayout layout; 519 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 520 layout = mLauncher.getHotseat().getLayout(); 521 child.setOnKeyListener(null); 522 523 // Hide folder title in the hotseat 524 if (child instanceof FolderIcon) { 525 ((FolderIcon) child).setTextVisible(false); 526 } 527 528 if (screen < 0) { 529 screen = mLauncher.getHotseat().getOrderInHotseat(x, y); 530 } else { 531 // Note: We do this to ensure that the hotseat is always laid out in the orientation 532 // of the hotseat in order regardless of which orientation they were added 533 x = mLauncher.getHotseat().getCellXFromOrder(screen); 534 y = mLauncher.getHotseat().getCellYFromOrder(screen); 535 } 536 } else { 537 // Show folder title if not in the hotseat 538 if (child instanceof FolderIcon) { 539 ((FolderIcon) child).setTextVisible(true); 540 } 541 542 layout = (CellLayout) getChildAt(screen); 543 child.setOnKeyListener(new IconKeyEventListener()); 544 } 545 546 LayoutParams genericLp = child.getLayoutParams(); 547 CellLayout.LayoutParams lp; 548 if (genericLp == null || !(genericLp instanceof CellLayout.LayoutParams)) { 549 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 550 } else { 551 lp = (CellLayout.LayoutParams) genericLp; 552 lp.cellX = x; 553 lp.cellY = y; 554 lp.cellHSpan = spanX; 555 lp.cellVSpan = spanY; 556 } 557 558 if (spanX < 0 && spanY < 0) { 559 lp.isLockedToGrid = false; 560 } 561 562 // Get the canonical child id to uniquely represent this view in this screen 563 int childId = LauncherModel.getCellLayoutChildId(container, screen, x, y, spanX, spanY); 564 boolean markCellsAsOccupied = !(child instanceof Folder); 565 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 566 // TODO: This branch occurs when the workspace is adding views 567 // outside of the defined grid 568 // maybe we should be deleting these items from the LauncherModel? 569 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 570 } 571 572 if (!(child instanceof Folder)) { 573 child.setHapticFeedbackEnabled(false); 574 child.setOnLongClickListener(mLongClickListener); 575 } 576 if (child instanceof DropTarget) { 577 mDragController.addDropTarget((DropTarget) child); 578 } 579 } 580 581 /** 582 * Check if the point (x, y) hits a given page. 583 */ 584 private boolean hitsPage(int index, float x, float y) { 585 final View page = getChildAt(index); 586 if (page != null) { 587 float[] localXY = { x, y }; 588 mapPointFromSelfToChild(page, localXY); 589 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 590 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 591 } 592 return false; 593 } 594 595 @Override 596 protected boolean hitsPreviousPage(float x, float y) { 597 // mNextPage is set to INVALID_PAGE whenever we are stationary. 598 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 599 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 600 601 // Only allow tap to next page on large devices, where there's significant margin outside 602 // the active workspace 603 return LauncherApplication.isScreenLarge() && hitsPage(current - 1, x, y); 604 } 605 606 @Override 607 protected boolean hitsNextPage(float x, float y) { 608 // mNextPage is set to INVALID_PAGE whenever we are stationary. 609 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 610 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 611 612 // Only allow tap to next page on large devices, where there's significant margin outside 613 // the active workspace 614 return LauncherApplication.isScreenLarge() && hitsPage(current + 1, x, y); 615 } 616 617 /** 618 * Called directly from a CellLayout (not by the framework), after we've been added as a 619 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 620 * that it should intercept touch events, which is not something that is normally supported. 621 */ 622 @Override 623 public boolean onTouch(View v, MotionEvent event) { 624 return (isSmall() || !isFinishedSwitchingState()); 625 } 626 627 public boolean isSwitchingState() { 628 return mIsSwitchingState; 629 } 630 631 /** This differs from isSwitchingState in that we take into account how far the transition 632 * has completed. */ 633 public boolean isFinishedSwitchingState() { 634 return !mIsSwitchingState || (mTransitionProgress > 0.5f); 635 } 636 637 protected void onWindowVisibilityChanged (int visibility) { 638 mLauncher.onWindowVisibilityChanged(visibility); 639 } 640 641 @Override 642 public boolean dispatchUnhandledMove(View focused, int direction) { 643 if (isSmall() || !isFinishedSwitchingState()) { 644 // when the home screens are shrunken, shouldn't allow side-scrolling 645 return false; 646 } 647 return super.dispatchUnhandledMove(focused, direction); 648 } 649 650 @Override 651 public boolean onInterceptTouchEvent(MotionEvent ev) { 652 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 653 case MotionEvent.ACTION_DOWN: 654 mXDown = ev.getX(); 655 mYDown = ev.getY(); 656 break; 657 case MotionEvent.ACTION_POINTER_UP: 658 case MotionEvent.ACTION_UP: 659 if (mTouchState == TOUCH_STATE_REST) { 660 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 661 if (!currentPage.lastDownOnOccupiedCell()) { 662 onWallpaperTap(ev); 663 } 664 } 665 } 666 return super.onInterceptTouchEvent(ev); 667 } 668 669 protected void reinflateWidgetsIfNecessary() { 670 final int clCount = getChildCount(); 671 for (int i = 0; i < clCount; i++) { 672 CellLayout cl = (CellLayout) getChildAt(i); 673 ShortcutAndWidgetContainer swc = cl.getShortcutsAndWidgets(); 674 final int itemCount = swc.getChildCount(); 675 for (int j = 0; j < itemCount; j++) { 676 View v = swc.getChildAt(j); 677 678 if (v.getTag() instanceof LauncherAppWidgetInfo) { 679 LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) v.getTag(); 680 LauncherAppWidgetHostView lahv = (LauncherAppWidgetHostView) info.hostView; 681 if (lahv != null && lahv.orientationChangedSincedInflation()) { 682 mLauncher.removeAppWidget(info); 683 // Remove the current widget which is inflated with the wrong orientation 684 cl.removeView(lahv); 685 mLauncher.bindAppWidget(info); 686 } 687 } 688 } 689 } 690 } 691 692 @Override 693 protected void determineScrollingStart(MotionEvent ev) { 694 if (isSmall()) return; 695 if (!isFinishedSwitchingState()) return; 696 697 float deltaX = Math.abs(ev.getX() - mXDown); 698 float deltaY = Math.abs(ev.getY() - mYDown); 699 700 if (Float.compare(deltaX, 0f) == 0) return; 701 702 float slope = deltaY / deltaX; 703 float theta = (float) Math.atan(slope); 704 705 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 706 cancelCurrentPageLongPress(); 707 } 708 709 if (theta > MAX_SWIPE_ANGLE) { 710 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 711 return; 712 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 713 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 714 // increase the touch slop to make it harder to begin scrolling the workspace. This 715 // results in vertically scrolling widgets to more easily. The higher the angle, the 716 // more we increase touch slop. 717 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 718 float extraRatio = (float) 719 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 720 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 721 } else { 722 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 723 super.determineScrollingStart(ev); 724 } 725 } 726 727 protected void onPageBeginMoving() { 728 super.onPageBeginMoving(); 729 730 if (isHardwareAccelerated()) { 731 updateChildrenLayersEnabled(false); 732 } else { 733 if (mNextPage != INVALID_PAGE) { 734 // we're snapping to a particular screen 735 enableChildrenCache(mCurrentPage, mNextPage); 736 } else { 737 // this is when user is actively dragging a particular screen, they might 738 // swipe it either left or right (but we won't advance by more than one screen) 739 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 740 } 741 } 742 743 // Only show page outlines as we pan if we are on large screen 744 if (LauncherApplication.isScreenLarge()) { 745 showOutlines(); 746 mIsStaticWallpaper = mWallpaperManager.getWallpaperInfo() == null; 747 } 748 749 // If we are not fading in adjacent screens, we still need to restore the alpha in case the 750 // user scrolls while we are transitioning (should not affect dispatchDraw optimizations) 751 if (!mWorkspaceFadeInAdjacentScreens) { 752 for (int i = 0; i < getChildCount(); ++i) { 753 ((CellLayout) getPageAt(i)).setShortcutAndWidgetAlpha(1f); 754 } 755 } 756 757 // Show the scroll indicator as you pan the page 758 showScrollingIndicator(false); 759 } 760 761 protected void onPageEndMoving() { 762 super.onPageEndMoving(); 763 764 if (isHardwareAccelerated()) { 765 updateChildrenLayersEnabled(false); 766 } else { 767 clearChildrenCache(); 768 } 769 770 771 if (mDragController.isDragging()) { 772 if (isSmall()) { 773 // If we are in springloaded mode, then force an event to check if the current touch 774 // is under a new page (to scroll to) 775 mDragController.forceMoveEvent(); 776 } 777 } else { 778 // If we are not mid-dragging, hide the page outlines if we are on a large screen 779 if (LauncherApplication.isScreenLarge()) { 780 hideOutlines(); 781 } 782 783 // Hide the scroll indicator as you pan the page 784 if (!mDragController.isDragging()) { 785 hideScrollingIndicator(false); 786 } 787 } 788 mOverScrollMaxBackgroundAlpha = 0.0f; 789 790 if (mDelayedResizeRunnable != null) { 791 mDelayedResizeRunnable.run(); 792 mDelayedResizeRunnable = null; 793 } 794 795 if (mDelayedSnapToPageRunnable != null) { 796 mDelayedSnapToPageRunnable.run(); 797 mDelayedSnapToPageRunnable = null; 798 } 799 } 800 801 @Override 802 protected void notifyPageSwitchListener() { 803 super.notifyPageSwitchListener(); 804 Launcher.setScreen(mCurrentPage); 805 }; 806 807 // As a ratio of screen height, the total distance we want the parallax effect to span 808 // horizontally 809 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 810 float aspectRatio = width / (float) height; 811 812 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 813 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 814 // We will use these two data points to extrapolate how much the wallpaper parallax effect 815 // to span (ie travel) at any aspect ratio: 816 817 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 818 final float ASPECT_RATIO_PORTRAIT = 10/16f; 819 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 820 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 821 822 // To find out the desired width at different aspect ratios, we use the following two 823 // formulas, where the coefficient on x is the aspect ratio (width/height): 824 // (16/10)x + y = 1.5 825 // (10/16)x + y = 1.2 826 // We solve for x and y and end up with a final formula: 827 final float x = 828 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 829 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 830 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 831 return x * aspectRatio + y; 832 } 833 834 // The range of scroll values for Workspace 835 private int getScrollRange() { 836 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 837 } 838 839 protected void setWallpaperDimension() { 840 Point minDims = new Point(); 841 Point maxDims = new Point(); 842 mLauncher.getWindowManager().getDefaultDisplay().getCurrentSizeRange(minDims, maxDims); 843 844 final int maxDim = Math.max(maxDims.x, maxDims.y); 845 final int minDim = Math.min(minDims.x, minDims.y); 846 847 // We need to ensure that there is enough extra space in the wallpaper for the intended 848 // parallax effects 849 if (LauncherApplication.isScreenLarge()) { 850 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 851 mWallpaperHeight = maxDim; 852 } else { 853 mWallpaperWidth = Math.max((int) (minDim * WALLPAPER_SCREENS_SPAN), maxDim); 854 mWallpaperHeight = maxDim; 855 } 856 new Thread("setWallpaperDimension") { 857 public void run() { 858 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 859 } 860 }.start(); 861 } 862 863 private float wallpaperOffsetForCurrentScroll() { 864 // Set wallpaper offset steps (1 / (number of screens - 1)) 865 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f); 866 867 // For the purposes of computing the scrollRange and overScrollOffset, we assume 868 // that mLayoutScale is 1. This means that when we're in spring-loaded mode, 869 // there's no discrepancy between the wallpaper offset for a given page. 870 float layoutScale = mLayoutScale; 871 mLayoutScale = 1f; 872 int scrollRange = getScrollRange(); 873 874 // Again, we adjust the wallpaper offset to be consistent between values of mLayoutScale 875 float adjustedScrollX = Math.max(0, Math.min(getScrollX(), mMaxScrollX)); 876 adjustedScrollX *= mWallpaperScrollRatio; 877 mLayoutScale = layoutScale; 878 879 float scrollProgress = 880 adjustedScrollX / (float) scrollRange; 881 882 if (LauncherApplication.isScreenLarge() && mIsStaticWallpaper) { 883 // The wallpaper travel width is how far, from left to right, the wallpaper will move 884 // at this orientation. On tablets in portrait mode we don't move all the way to the 885 // edges of the wallpaper, or otherwise the parallax effect would be too strong. 886 int wallpaperTravelWidth = Math.min(mWallpaperTravelWidth, mWallpaperWidth); 887 888 float offsetInDips = wallpaperTravelWidth * scrollProgress + 889 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 890 float offset = offsetInDips / (float) mWallpaperWidth; 891 return offset; 892 } else { 893 return scrollProgress; 894 } 895 } 896 897 private void syncWallpaperOffsetWithScroll() { 898 final boolean enableWallpaperEffects = isHardwareAccelerated(); 899 if (enableWallpaperEffects) { 900 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 901 } 902 } 903 904 public void updateWallpaperOffsetImmediately() { 905 mUpdateWallpaperOffsetImmediately = true; 906 } 907 908 private void updateWallpaperOffsets() { 909 boolean updateNow = false; 910 boolean keepUpdating = true; 911 if (mUpdateWallpaperOffsetImmediately) { 912 updateNow = true; 913 keepUpdating = false; 914 mWallpaperOffset.jumpToFinal(); 915 mUpdateWallpaperOffsetImmediately = false; 916 } else { 917 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 918 } 919 if (updateNow) { 920 if (mWindowToken != null) { 921 mWallpaperManager.setWallpaperOffsets(mWindowToken, 922 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 923 } 924 } 925 if (keepUpdating) { 926 invalidate(); 927 } 928 } 929 930 @Override 931 protected void updateCurrentPageScroll() { 932 super.updateCurrentPageScroll(); 933 computeWallpaperScrollRatio(mCurrentPage); 934 } 935 936 @Override 937 protected void snapToPage(int whichPage) { 938 super.snapToPage(whichPage); 939 computeWallpaperScrollRatio(whichPage); 940 } 941 942 @Override 943 protected void snapToPage(int whichPage, int duration) { 944 super.snapToPage(whichPage, duration); 945 computeWallpaperScrollRatio(whichPage); 946 } 947 948 protected void snapToPage(int whichPage, Runnable r) { 949 if (mDelayedSnapToPageRunnable != null) { 950 mDelayedSnapToPageRunnable.run(); 951 } 952 mDelayedSnapToPageRunnable = r; 953 snapToPage(whichPage, SLOW_PAGE_SNAP_ANIMATION_DURATION); 954 } 955 956 private void computeWallpaperScrollRatio(int page) { 957 // Here, we determine what the desired scroll would be with and without a layout scale, 958 // and compute a ratio between the two. This allows us to adjust the wallpaper offset 959 // as though there is no layout scale. 960 float layoutScale = mLayoutScale; 961 int scaled = getChildOffset(page) - getRelativeChildOffset(page); 962 mLayoutScale = 1.0f; 963 float unscaled = getChildOffset(page) - getRelativeChildOffset(page); 964 mLayoutScale = layoutScale; 965 if (scaled > 0) { 966 mWallpaperScrollRatio = (1.0f * unscaled) / scaled; 967 } else { 968 mWallpaperScrollRatio = 1f; 969 } 970 } 971 972 class WallpaperOffsetInterpolator { 973 float mFinalHorizontalWallpaperOffset = 0.0f; 974 float mFinalVerticalWallpaperOffset = 0.5f; 975 float mHorizontalWallpaperOffset = 0.0f; 976 float mVerticalWallpaperOffset = 0.5f; 977 long mLastWallpaperOffsetUpdateTime; 978 boolean mIsMovingFast; 979 boolean mOverrideHorizontalCatchupConstant; 980 float mHorizontalCatchupConstant = 0.35f; 981 float mVerticalCatchupConstant = 0.35f; 982 983 public WallpaperOffsetInterpolator() { 984 } 985 986 public void setOverrideHorizontalCatchupConstant(boolean override) { 987 mOverrideHorizontalCatchupConstant = override; 988 } 989 990 public void setHorizontalCatchupConstant(float f) { 991 mHorizontalCatchupConstant = f; 992 } 993 994 public void setVerticalCatchupConstant(float f) { 995 mVerticalCatchupConstant = f; 996 } 997 998 public boolean computeScrollOffset() { 999 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 1000 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 1001 mIsMovingFast = false; 1002 return false; 1003 } 1004 boolean isLandscape = mDisplaySize.x > mDisplaySize.y; 1005 1006 long currentTime = System.currentTimeMillis(); 1007 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 1008 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 1009 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 1010 1011 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 1012 if (!mIsMovingFast && xdiff > 0.07) { 1013 mIsMovingFast = true; 1014 } 1015 1016 float fractionToCatchUpIn1MsHorizontal; 1017 if (mOverrideHorizontalCatchupConstant) { 1018 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 1019 } else if (mIsMovingFast) { 1020 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 1021 } else { 1022 // slow 1023 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 1024 } 1025 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 1026 1027 fractionToCatchUpIn1MsHorizontal /= 33f; 1028 fractionToCatchUpIn1MsVertical /= 33f; 1029 1030 final float UPDATE_THRESHOLD = 0.00001f; 1031 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 1032 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 1033 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 1034 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 1035 1036 // Don't have any lag between workspace and wallpaper on non-large devices 1037 if (!LauncherApplication.isScreenLarge() || jumpToFinalValue) { 1038 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 1039 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 1040 } else { 1041 float percentToCatchUpVertical = 1042 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 1043 float percentToCatchUpHorizontal = 1044 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 1045 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 1046 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 1047 } 1048 1049 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 1050 return true; 1051 } 1052 1053 public float getCurrX() { 1054 return mHorizontalWallpaperOffset; 1055 } 1056 1057 public float getFinalX() { 1058 return mFinalHorizontalWallpaperOffset; 1059 } 1060 1061 public float getCurrY() { 1062 return mVerticalWallpaperOffset; 1063 } 1064 1065 public float getFinalY() { 1066 return mFinalVerticalWallpaperOffset; 1067 } 1068 1069 public void setFinalX(float x) { 1070 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 1071 } 1072 1073 public void setFinalY(float y) { 1074 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 1075 } 1076 1077 public void jumpToFinal() { 1078 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 1079 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 1080 } 1081 } 1082 1083 @Override 1084 public void computeScroll() { 1085 super.computeScroll(); 1086 syncWallpaperOffsetWithScroll(); 1087 } 1088 1089 void showOutlines() { 1090 if (!isSmall() && !mIsSwitchingState) { 1091 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1092 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1093 mChildrenOutlineFadeInAnimation = LauncherAnimUtils.ofFloat(this, "childrenOutlineAlpha", 1.0f); 1094 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 1095 mChildrenOutlineFadeInAnimation.start(); 1096 } 1097 } 1098 1099 void hideOutlines() { 1100 if (!isSmall() && !mIsSwitchingState) { 1101 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1102 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1103 mChildrenOutlineFadeOutAnimation = LauncherAnimUtils.ofFloat(this, "childrenOutlineAlpha", 0.0f); 1104 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 1105 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 1106 mChildrenOutlineFadeOutAnimation.start(); 1107 } 1108 } 1109 1110 public void showOutlinesTemporarily() { 1111 if (!mIsPageMoving && !isTouchActive()) { 1112 snapToPage(mCurrentPage); 1113 } 1114 } 1115 1116 public void setChildrenOutlineAlpha(float alpha) { 1117 mChildrenOutlineAlpha = alpha; 1118 for (int i = 0; i < getChildCount(); i++) { 1119 CellLayout cl = (CellLayout) getChildAt(i); 1120 cl.setBackgroundAlpha(alpha); 1121 } 1122 } 1123 1124 public float getChildrenOutlineAlpha() { 1125 return mChildrenOutlineAlpha; 1126 } 1127 1128 void disableBackground() { 1129 mDrawBackground = false; 1130 } 1131 void enableBackground() { 1132 mDrawBackground = true; 1133 } 1134 1135 private void animateBackgroundGradient(float finalAlpha, boolean animated) { 1136 if (mBackground == null) return; 1137 if (mBackgroundFadeInAnimation != null) { 1138 mBackgroundFadeInAnimation.cancel(); 1139 mBackgroundFadeInAnimation = null; 1140 } 1141 if (mBackgroundFadeOutAnimation != null) { 1142 mBackgroundFadeOutAnimation.cancel(); 1143 mBackgroundFadeOutAnimation = null; 1144 } 1145 float startAlpha = getBackgroundAlpha(); 1146 if (finalAlpha != startAlpha) { 1147 if (animated) { 1148 mBackgroundFadeOutAnimation = LauncherAnimUtils.ofFloat(startAlpha, finalAlpha); 1149 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1150 public void onAnimationUpdate(ValueAnimator animation) { 1151 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1152 } 1153 }); 1154 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1155 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1156 mBackgroundFadeOutAnimation.start(); 1157 } else { 1158 setBackgroundAlpha(finalAlpha); 1159 } 1160 } 1161 } 1162 1163 public void setBackgroundAlpha(float alpha) { 1164 if (alpha != mBackgroundAlpha) { 1165 mBackgroundAlpha = alpha; 1166 invalidate(); 1167 } 1168 } 1169 1170 public float getBackgroundAlpha() { 1171 return mBackgroundAlpha; 1172 } 1173 1174 float backgroundAlphaInterpolator(float r) { 1175 float pivotA = 0.1f; 1176 float pivotB = 0.4f; 1177 if (r < pivotA) { 1178 return 0; 1179 } else if (r > pivotB) { 1180 return 1.0f; 1181 } else { 1182 return (r - pivotA)/(pivotB - pivotA); 1183 } 1184 } 1185 1186 float overScrollBackgroundAlphaInterpolator(float r) { 1187 float threshold = 0.08f; 1188 1189 if (r > mOverScrollMaxBackgroundAlpha) { 1190 mOverScrollMaxBackgroundAlpha = r; 1191 } else if (r < mOverScrollMaxBackgroundAlpha) { 1192 r = mOverScrollMaxBackgroundAlpha; 1193 } 1194 1195 return Math.min(r / threshold, 1.0f); 1196 } 1197 1198 private void updatePageAlphaValues(int screenCenter) { 1199 boolean isInOverscroll = mOverScrollX < 0 || mOverScrollX > mMaxScrollX; 1200 if (mWorkspaceFadeInAdjacentScreens && 1201 mState == State.NORMAL && 1202 !mIsSwitchingState && 1203 !isInOverscroll) { 1204 for (int i = 0; i < getChildCount(); i++) { 1205 CellLayout child = (CellLayout) getChildAt(i); 1206 if (child != null) { 1207 float scrollProgress = getScrollProgress(screenCenter, child, i); 1208 float alpha = 1 - Math.abs(scrollProgress); 1209 child.getShortcutsAndWidgets().setAlpha(alpha); 1210 if (!mIsDragOccuring) { 1211 child.setBackgroundAlphaMultiplier( 1212 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1213 } else { 1214 child.setBackgroundAlphaMultiplier(1f); 1215 } 1216 } 1217 } 1218 } 1219 } 1220 1221 private void setChildrenBackgroundAlphaMultipliers(float a) { 1222 for (int i = 0; i < getChildCount(); i++) { 1223 CellLayout child = (CellLayout) getChildAt(i); 1224 child.setBackgroundAlphaMultiplier(a); 1225 } 1226 } 1227 1228 @Override 1229 protected void screenScrolled(int screenCenter) { 1230 super.screenScrolled(screenCenter); 1231 1232 updatePageAlphaValues(screenCenter); 1233 enableHwLayersOnVisiblePages(); 1234 1235 if (mOverScrollX < 0 || mOverScrollX > mMaxScrollX) { 1236 int index = mOverScrollX < 0 ? 0 : getChildCount() - 1; 1237 CellLayout cl = (CellLayout) getChildAt(index); 1238 float scrollProgress = getScrollProgress(screenCenter, cl, index); 1239 cl.setOverScrollAmount(Math.abs(scrollProgress), index == 0); 1240 float rotation = - WORKSPACE_OVERSCROLL_ROTATION * scrollProgress; 1241 cl.setRotationY(rotation); 1242 setFadeForOverScroll(Math.abs(scrollProgress)); 1243 if (!mOverscrollTransformsSet) { 1244 mOverscrollTransformsSet = true; 1245 cl.setCameraDistance(mDensity * mCameraDistance); 1246 cl.setPivotX(cl.getMeasuredWidth() * (index == 0 ? 0.75f : 0.25f)); 1247 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1248 cl.setOverscrollTransformsDirty(true); 1249 } 1250 } else { 1251 if (mOverscrollFade != 0) { 1252 setFadeForOverScroll(0); 1253 } 1254 if (mOverscrollTransformsSet) { 1255 mOverscrollTransformsSet = false; 1256 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1257 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1258 } 1259 } 1260 } 1261 1262 @Override 1263 protected void overScroll(float amount) { 1264 acceleratedOverScroll(amount); 1265 } 1266 1267 protected void onAttachedToWindow() { 1268 super.onAttachedToWindow(); 1269 mWindowToken = getWindowToken(); 1270 computeScroll(); 1271 mDragController.setWindowToken(mWindowToken); 1272 } 1273 1274 protected void onDetachedFromWindow() { 1275 mWindowToken = null; 1276 } 1277 1278 @Override 1279 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1280 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1281 mUpdateWallpaperOffsetImmediately = true; 1282 } 1283 super.onLayout(changed, left, top, right, bottom); 1284 } 1285 1286 @Override 1287 protected void onDraw(Canvas canvas) { 1288 updateWallpaperOffsets(); 1289 1290 // Draw the background gradient if necessary 1291 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1292 int alpha = (int) (mBackgroundAlpha * 255); 1293 mBackground.setAlpha(alpha); 1294 mBackground.setBounds(getScrollX(), 0, getScrollX() + getMeasuredWidth(), 1295 getMeasuredHeight()); 1296 mBackground.draw(canvas); 1297 } 1298 1299 super.onDraw(canvas); 1300 1301 // Call back to LauncherModel to finish binding after the first draw 1302 post(mBindPages); 1303 } 1304 1305 boolean isDrawingBackgroundGradient() { 1306 return (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground); 1307 } 1308 1309 @Override 1310 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1311 if (!mLauncher.isAllAppsVisible()) { 1312 final Folder openFolder = getOpenFolder(); 1313 if (openFolder != null) { 1314 return openFolder.requestFocus(direction, previouslyFocusedRect); 1315 } else { 1316 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1317 } 1318 } 1319 return false; 1320 } 1321 1322 @Override 1323 public int getDescendantFocusability() { 1324 if (isSmall()) { 1325 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1326 } 1327 return super.getDescendantFocusability(); 1328 } 1329 1330 @Override 1331 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1332 if (!mLauncher.isAllAppsVisible()) { 1333 final Folder openFolder = getOpenFolder(); 1334 if (openFolder != null) { 1335 openFolder.addFocusables(views, direction); 1336 } else { 1337 super.addFocusables(views, direction, focusableMode); 1338 } 1339 } 1340 } 1341 1342 public boolean isSmall() { 1343 return mState == State.SMALL || mState == State.SPRING_LOADED; 1344 } 1345 1346 void enableChildrenCache(int fromPage, int toPage) { 1347 if (fromPage > toPage) { 1348 final int temp = fromPage; 1349 fromPage = toPage; 1350 toPage = temp; 1351 } 1352 1353 final int screenCount = getChildCount(); 1354 1355 fromPage = Math.max(fromPage, 0); 1356 toPage = Math.min(toPage, screenCount - 1); 1357 1358 for (int i = fromPage; i <= toPage; i++) { 1359 final CellLayout layout = (CellLayout) getChildAt(i); 1360 layout.setChildrenDrawnWithCacheEnabled(true); 1361 layout.setChildrenDrawingCacheEnabled(true); 1362 } 1363 } 1364 1365 void clearChildrenCache() { 1366 final int screenCount = getChildCount(); 1367 for (int i = 0; i < screenCount; i++) { 1368 final CellLayout layout = (CellLayout) getChildAt(i); 1369 layout.setChildrenDrawnWithCacheEnabled(false); 1370 // In software mode, we don't want the items to continue to be drawn into bitmaps 1371 if (!isHardwareAccelerated()) { 1372 layout.setChildrenDrawingCacheEnabled(false); 1373 } 1374 } 1375 } 1376 1377 1378 private void updateChildrenLayersEnabled(boolean force) { 1379 boolean small = mState == State.SMALL || mIsSwitchingState; 1380 boolean enableChildrenLayers = force || small || mAnimatingViewIntoPlace || isPageMoving(); 1381 1382 if (enableChildrenLayers != mChildrenLayersEnabled) { 1383 mChildrenLayersEnabled = enableChildrenLayers; 1384 if (mChildrenLayersEnabled) { 1385 enableHwLayersOnVisiblePages(); 1386 } else { 1387 for (int i = 0; i < getPageCount(); i++) { 1388 final CellLayout cl = (CellLayout) getChildAt(i); 1389 cl.disableHardwareLayers(); 1390 } 1391 } 1392 } 1393 } 1394 1395 private void enableHwLayersOnVisiblePages() { 1396 if (mChildrenLayersEnabled) { 1397 final int screenCount = getChildCount(); 1398 getVisiblePages(mTempVisiblePagesRange); 1399 int leftScreen = mTempVisiblePagesRange[0]; 1400 int rightScreen = mTempVisiblePagesRange[1]; 1401 if (leftScreen == rightScreen) { 1402 // make sure we're caching at least two pages always 1403 if (rightScreen < screenCount - 1) { 1404 rightScreen++; 1405 } else if (leftScreen > 0) { 1406 leftScreen--; 1407 } 1408 } 1409 for (int i = 0; i < screenCount; i++) { 1410 final CellLayout layout = (CellLayout) getChildAt(i); 1411 if (!(leftScreen <= i && i <= rightScreen && shouldDrawChild(layout))) { 1412 layout.disableHardwareLayers(); 1413 } 1414 } 1415 for (int i = 0; i < screenCount; i++) { 1416 final CellLayout layout = (CellLayout) getChildAt(i); 1417 if (leftScreen <= i && i <= rightScreen && shouldDrawChild(layout)) { 1418 layout.enableHardwareLayers(); 1419 } 1420 } 1421 } 1422 } 1423 1424 public void buildPageHardwareLayers() { 1425 // force layers to be enabled just for the call to buildLayer 1426 updateChildrenLayersEnabled(true); 1427 if (getWindowToken() != null) { 1428 final int childCount = getChildCount(); 1429 for (int i = 0; i < childCount; i++) { 1430 CellLayout cl = (CellLayout) getChildAt(i); 1431 cl.buildHardwareLayer(); 1432 } 1433 } 1434 updateChildrenLayersEnabled(false); 1435 } 1436 1437 protected void onWallpaperTap(MotionEvent ev) { 1438 final int[] position = mTempCell; 1439 getLocationOnScreen(position); 1440 1441 int pointerIndex = ev.getActionIndex(); 1442 position[0] += (int) ev.getX(pointerIndex); 1443 position[1] += (int) ev.getY(pointerIndex); 1444 1445 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1446 ev.getAction() == MotionEvent.ACTION_UP 1447 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1448 position[0], position[1], 0, null); 1449 } 1450 1451 /* 1452 * This interpolator emulates the rate at which the perceived scale of an object changes 1453 * as its distance from a camera increases. When this interpolator is applied to a scale 1454 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1455 * from the camera. 1456 */ 1457 static class ZInterpolator implements TimeInterpolator { 1458 private float focalLength; 1459 1460 public ZInterpolator(float foc) { 1461 focalLength = foc; 1462 } 1463 1464 public float getInterpolation(float input) { 1465 return (1.0f - focalLength / (focalLength + input)) / 1466 (1.0f - focalLength / (focalLength + 1.0f)); 1467 } 1468 } 1469 1470 /* 1471 * The exact reverse of ZInterpolator. 1472 */ 1473 static class InverseZInterpolator implements TimeInterpolator { 1474 private ZInterpolator zInterpolator; 1475 public InverseZInterpolator(float foc) { 1476 zInterpolator = new ZInterpolator(foc); 1477 } 1478 public float getInterpolation(float input) { 1479 return 1 - zInterpolator.getInterpolation(1 - input); 1480 } 1481 } 1482 1483 /* 1484 * ZInterpolator compounded with an ease-out. 1485 */ 1486 static class ZoomOutInterpolator implements TimeInterpolator { 1487 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(0.75f); 1488 private final ZInterpolator zInterpolator = new ZInterpolator(0.13f); 1489 1490 public float getInterpolation(float input) { 1491 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1492 } 1493 } 1494 1495 /* 1496 * InvereZInterpolator compounded with an ease-out. 1497 */ 1498 static class ZoomInInterpolator implements TimeInterpolator { 1499 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1500 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1501 1502 public float getInterpolation(float input) { 1503 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1504 } 1505 } 1506 1507 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1508 1509 /* 1510 * 1511 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1512 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1513 * 1514 * These methods mark the appropriate pages as accepting drops (which alters their visual 1515 * appearance). 1516 * 1517 */ 1518 public void onDragStartedWithItem(View v) { 1519 final Canvas canvas = new Canvas(); 1520 1521 // The outline is used to visualize where the item will land if dropped 1522 mDragOutline = createDragOutline(v, canvas, DRAG_BITMAP_PADDING); 1523 } 1524 1525 public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, boolean clipAlpha) { 1526 final Canvas canvas = new Canvas(); 1527 1528 int[] size = estimateItemSize(info.spanX, info.spanY, info, false); 1529 1530 // The outline is used to visualize where the item will land if dropped 1531 mDragOutline = createDragOutline(b, canvas, DRAG_BITMAP_PADDING, size[0], 1532 size[1], clipAlpha); 1533 } 1534 1535 public void exitWidgetResizeMode() { 1536 DragLayer dragLayer = mLauncher.getDragLayer(); 1537 dragLayer.clearAllResizeFrames(); 1538 } 1539 1540 private void initAnimationArrays() { 1541 final int childCount = getChildCount(); 1542 if (mOldTranslationXs != null) return; 1543 mOldTranslationXs = new float[childCount]; 1544 mOldTranslationYs = new float[childCount]; 1545 mOldScaleXs = new float[childCount]; 1546 mOldScaleYs = new float[childCount]; 1547 mOldBackgroundAlphas = new float[childCount]; 1548 mOldAlphas = new float[childCount]; 1549 mNewTranslationXs = new float[childCount]; 1550 mNewTranslationYs = new float[childCount]; 1551 mNewScaleXs = new float[childCount]; 1552 mNewScaleYs = new float[childCount]; 1553 mNewBackgroundAlphas = new float[childCount]; 1554 mNewAlphas = new float[childCount]; 1555 mNewRotationYs = new float[childCount]; 1556 } 1557 1558 Animator getChangeStateAnimation(final State state, boolean animated) { 1559 return getChangeStateAnimation(state, animated, 0); 1560 } 1561 1562 Animator getChangeStateAnimation(final State state, boolean animated, int delay) { 1563 if (mState == state) { 1564 return null; 1565 } 1566 1567 // Initialize animation arrays for the first time if necessary 1568 initAnimationArrays(); 1569 1570 AnimatorSet anim = animated ? LauncherAnimUtils.createAnimatorSet() : null; 1571 1572 // Stop any scrolling, move to the current page right away 1573 setCurrentPage(getNextPage()); 1574 1575 final State oldState = mState; 1576 final boolean oldStateIsNormal = (oldState == State.NORMAL); 1577 final boolean oldStateIsSpringLoaded = (oldState == State.SPRING_LOADED); 1578 final boolean oldStateIsSmall = (oldState == State.SMALL); 1579 mState = state; 1580 final boolean stateIsNormal = (state == State.NORMAL); 1581 final boolean stateIsSpringLoaded = (state == State.SPRING_LOADED); 1582 final boolean stateIsSmall = (state == State.SMALL); 1583 float finalScaleFactor = 1.0f; 1584 float finalBackgroundAlpha = stateIsSpringLoaded ? 1.0f : 0f; 1585 float translationX = 0; 1586 float translationY = 0; 1587 boolean zoomIn = true; 1588 1589 if (state != State.NORMAL) { 1590 finalScaleFactor = mSpringLoadedShrinkFactor - (stateIsSmall ? 0.1f : 0); 1591 setPageSpacing(mSpringLoadedPageSpacing); 1592 if (oldStateIsNormal && stateIsSmall) { 1593 zoomIn = false; 1594 setLayoutScale(finalScaleFactor); 1595 updateChildrenLayersEnabled(false); 1596 } else { 1597 finalBackgroundAlpha = 1.0f; 1598 setLayoutScale(finalScaleFactor); 1599 } 1600 } else { 1601 setPageSpacing(mOriginalPageSpacing); 1602 setLayoutScale(1.0f); 1603 } 1604 1605 final int duration = zoomIn ? 1606 getResources().getInteger(R.integer.config_workspaceUnshrinkTime) : 1607 getResources().getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1608 for (int i = 0; i < getChildCount(); i++) { 1609 final CellLayout cl = (CellLayout) getChildAt(i); 1610 float finalAlpha = (!mWorkspaceFadeInAdjacentScreens || stateIsSpringLoaded || 1611 (i == mCurrentPage)) ? 1f : 0f; 1612 float currentAlpha = cl.getShortcutsAndWidgets().getAlpha(); 1613 float initialAlpha = currentAlpha; 1614 1615 // Determine the pages alpha during the state transition 1616 if ((oldStateIsSmall && stateIsNormal) || 1617 (oldStateIsNormal && stateIsSmall)) { 1618 // To/from workspace - only show the current page unless the transition is not 1619 // animated and the animation end callback below doesn't run; 1620 // or, if we're in spring-loaded mode 1621 if (i == mCurrentPage || !animated || oldStateIsSpringLoaded) { 1622 finalAlpha = 1f; 1623 } else { 1624 initialAlpha = 0f; 1625 finalAlpha = 0f; 1626 } 1627 } 1628 1629 mOldAlphas[i] = initialAlpha; 1630 mNewAlphas[i] = finalAlpha; 1631 if (animated) { 1632 mOldTranslationXs[i] = cl.getTranslationX(); 1633 mOldTranslationYs[i] = cl.getTranslationY(); 1634 mOldScaleXs[i] = cl.getScaleX(); 1635 mOldScaleYs[i] = cl.getScaleY(); 1636 mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1637 1638 mNewTranslationXs[i] = translationX; 1639 mNewTranslationYs[i] = translationY; 1640 mNewScaleXs[i] = finalScaleFactor; 1641 mNewScaleYs[i] = finalScaleFactor; 1642 mNewBackgroundAlphas[i] = finalBackgroundAlpha; 1643 } else { 1644 cl.setTranslationX(translationX); 1645 cl.setTranslationY(translationY); 1646 cl.setScaleX(finalScaleFactor); 1647 cl.setScaleY(finalScaleFactor); 1648 cl.setBackgroundAlpha(finalBackgroundAlpha); 1649 cl.setShortcutAndWidgetAlpha(finalAlpha); 1650 } 1651 } 1652 1653 if (animated) { 1654 for (int index = 0; index < getChildCount(); index++) { 1655 final int i = index; 1656 final CellLayout cl = (CellLayout) getChildAt(i); 1657 float currentAlpha = cl.getShortcutsAndWidgets().getAlpha(); 1658 if (mOldAlphas[i] == 0 && mNewAlphas[i] == 0) { 1659 cl.setTranslationX(mNewTranslationXs[i]); 1660 cl.setTranslationY(mNewTranslationYs[i]); 1661 cl.setScaleX(mNewScaleXs[i]); 1662 cl.setScaleY(mNewScaleYs[i]); 1663 cl.setBackgroundAlpha(mNewBackgroundAlphas[i]); 1664 cl.setShortcutAndWidgetAlpha(mNewAlphas[i]); 1665 cl.setRotationY(mNewRotationYs[i]); 1666 } else { 1667 LauncherViewPropertyAnimator a = new LauncherViewPropertyAnimator(cl); 1668 a.translationX(mNewTranslationXs[i]) 1669 .translationY(mNewTranslationYs[i]) 1670 .scaleX(mNewScaleXs[i]) 1671 .scaleY(mNewScaleYs[i]) 1672 .setDuration(duration) 1673 .setInterpolator(mZoomInInterpolator); 1674 anim.play(a); 1675 1676 if (mOldAlphas[i] != mNewAlphas[i] || currentAlpha != mNewAlphas[i]) { 1677 LauncherViewPropertyAnimator alphaAnim = 1678 new LauncherViewPropertyAnimator(cl.getShortcutsAndWidgets()); 1679 alphaAnim.alpha(mNewAlphas[i]) 1680 .setDuration(duration) 1681 .setInterpolator(mZoomInInterpolator); 1682 anim.play(alphaAnim); 1683 } 1684 if (mOldBackgroundAlphas[i] != 0 || 1685 mNewBackgroundAlphas[i] != 0) { 1686 ValueAnimator bgAnim = LauncherAnimUtils.ofFloat(0f, 1f).setDuration(duration); 1687 bgAnim.setInterpolator(mZoomInInterpolator); 1688 bgAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1689 public void onAnimationUpdate(float a, float b) { 1690 cl.setBackgroundAlpha( 1691 a * mOldBackgroundAlphas[i] + 1692 b * mNewBackgroundAlphas[i]); 1693 } 1694 }); 1695 anim.play(bgAnim); 1696 } 1697 } 1698 } 1699 buildPageHardwareLayers(); 1700 anim.setStartDelay(delay); 1701 } 1702 1703 if (stateIsSpringLoaded) { 1704 // Right now we're covered by Apps Customize 1705 // Show the background gradient immediately, so the gradient will 1706 // be showing once AppsCustomize disappears 1707 animateBackgroundGradient(getResources().getInteger( 1708 R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, false); 1709 } else { 1710 // Fade the background gradient away 1711 animateBackgroundGradient(0f, true); 1712 } 1713 return anim; 1714 } 1715 1716 @Override 1717 public void onLauncherTransitionPrepare(Launcher l, boolean animated, boolean toWorkspace) { 1718 mIsSwitchingState = true; 1719 cancelScrollingIndicatorAnimations(); 1720 } 1721 1722 @Override 1723 public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) { 1724 } 1725 1726 @Override 1727 public void onLauncherTransitionStep(Launcher l, float t) { 1728 mTransitionProgress = t; 1729 } 1730 1731 @Override 1732 public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) { 1733 mIsSwitchingState = false; 1734 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 1735 updateChildrenLayersEnabled(false); 1736 // The code in getChangeStateAnimation to determine initialAlpha and finalAlpha will ensure 1737 // ensure that only the current page is visible during (and subsequently, after) the 1738 // transition animation. If fade adjacent pages is disabled, then re-enable the page 1739 // visibility after the transition animation. 1740 if (!mWorkspaceFadeInAdjacentScreens) { 1741 for (int i = 0; i < getChildCount(); i++) { 1742 final CellLayout cl = (CellLayout) getChildAt(i); 1743 cl.setShortcutAndWidgetAlpha(1f); 1744 } 1745 } 1746 } 1747 1748 @Override 1749 public View getContent() { 1750 return this; 1751 } 1752 1753 /** 1754 * Draw the View v into the given Canvas. 1755 * 1756 * @param v the view to draw 1757 * @param destCanvas the canvas to draw on 1758 * @param padding the horizontal and vertical padding to use when drawing 1759 */ 1760 private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { 1761 final Rect clipRect = mTempRect; 1762 v.getDrawingRect(clipRect); 1763 1764 boolean textVisible = false; 1765 1766 destCanvas.save(); 1767 if (v instanceof TextView && pruneToDrawable) { 1768 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1769 clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); 1770 destCanvas.translate(padding / 2, padding / 2); 1771 d.draw(destCanvas); 1772 } else { 1773 if (v instanceof FolderIcon) { 1774 // For FolderIcons the text can bleed into the icon area, and so we need to 1775 // hide the text completely (which can't be achieved by clipping). 1776 if (((FolderIcon) v).getTextVisible()) { 1777 ((FolderIcon) v).setTextVisible(false); 1778 textVisible = true; 1779 } 1780 } else if (v instanceof BubbleTextView) { 1781 final BubbleTextView tv = (BubbleTextView) v; 1782 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1783 tv.getLayout().getLineTop(0); 1784 } else if (v instanceof TextView) { 1785 final TextView tv = (TextView) v; 1786 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1787 tv.getLayout().getLineTop(0); 1788 } 1789 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1790 destCanvas.clipRect(clipRect, Op.REPLACE); 1791 v.draw(destCanvas); 1792 1793 // Restore text visibility of FolderIcon if necessary 1794 if (textVisible) { 1795 ((FolderIcon) v).setTextVisible(true); 1796 } 1797 } 1798 destCanvas.restore(); 1799 } 1800 1801 /** 1802 * Returns a new bitmap to show when the given View is being dragged around. 1803 * Responsibility for the bitmap is transferred to the caller. 1804 */ 1805 public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1806 Bitmap b; 1807 1808 if (v instanceof TextView) { 1809 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1810 b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, 1811 d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); 1812 } else { 1813 b = Bitmap.createBitmap( 1814 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1815 } 1816 1817 canvas.setBitmap(b); 1818 drawDragView(v, canvas, padding, true); 1819 canvas.setBitmap(null); 1820 1821 return b; 1822 } 1823 1824 /** 1825 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1826 * Responsibility for the bitmap is transferred to the caller. 1827 */ 1828 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1829 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1830 final Bitmap b = Bitmap.createBitmap( 1831 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1832 1833 canvas.setBitmap(b); 1834 drawDragView(v, canvas, padding, true); 1835 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1836 canvas.setBitmap(null); 1837 return b; 1838 } 1839 1840 /** 1841 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1842 * Responsibility for the bitmap is transferred to the caller. 1843 */ 1844 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h, 1845 boolean clipAlpha) { 1846 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1847 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1848 canvas.setBitmap(b); 1849 1850 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 1851 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 1852 (h - padding) / (float) orig.getHeight()); 1853 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 1854 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 1855 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 1856 1857 // center the image 1858 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 1859 1860 canvas.drawBitmap(orig, src, dst, null); 1861 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor, 1862 clipAlpha); 1863 canvas.setBitmap(null); 1864 1865 return b; 1866 } 1867 1868 void startDrag(CellLayout.CellInfo cellInfo) { 1869 View child = cellInfo.cell; 1870 1871 // Make sure the drag was started by a long press as opposed to a long click. 1872 if (!child.isInTouchMode()) { 1873 return; 1874 } 1875 1876 mDragInfo = cellInfo; 1877 child.setVisibility(INVISIBLE); 1878 CellLayout layout = (CellLayout) child.getParent().getParent(); 1879 layout.prepareChildForDrag(child); 1880 1881 child.clearFocus(); 1882 child.setPressed(false); 1883 1884 final Canvas canvas = new Canvas(); 1885 1886 // The outline is used to visualize where the item will land if dropped 1887 mDragOutline = createDragOutline(child, canvas, DRAG_BITMAP_PADDING); 1888 beginDragShared(child, this); 1889 } 1890 1891 public void beginDragShared(View child, DragSource source) { 1892 Resources r = getResources(); 1893 1894 // The drag bitmap follows the touch point around on the screen 1895 final Bitmap b = createDragBitmap(child, new Canvas(), DRAG_BITMAP_PADDING); 1896 1897 final int bmpWidth = b.getWidth(); 1898 final int bmpHeight = b.getHeight(); 1899 1900 float scale = mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 1901 int dragLayerX = 1902 Math.round(mTempXY[0] - (bmpWidth - scale * child.getWidth()) / 2); 1903 int dragLayerY = 1904 Math.round(mTempXY[1] - (bmpHeight - scale * bmpHeight) / 2 1905 - DRAG_BITMAP_PADDING / 2); 1906 1907 Point dragVisualizeOffset = null; 1908 Rect dragRect = null; 1909 if (child instanceof BubbleTextView || child instanceof PagedViewIcon) { 1910 int iconSize = r.getDimensionPixelSize(R.dimen.app_icon_size); 1911 int iconPaddingTop = r.getDimensionPixelSize(R.dimen.app_icon_padding_top); 1912 int top = child.getPaddingTop(); 1913 int left = (bmpWidth - iconSize) / 2; 1914 int right = left + iconSize; 1915 int bottom = top + iconSize; 1916 dragLayerY += top; 1917 // Note: The drag region is used to calculate drag layer offsets, but the 1918 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 1919 dragVisualizeOffset = new Point(-DRAG_BITMAP_PADDING / 2, 1920 iconPaddingTop - DRAG_BITMAP_PADDING / 2); 1921 dragRect = new Rect(left, top, right, bottom); 1922 } else if (child instanceof FolderIcon) { 1923 int previewSize = r.getDimensionPixelSize(R.dimen.folder_preview_size); 1924 dragRect = new Rect(0, 0, child.getWidth(), previewSize); 1925 } 1926 1927 // Clear the pressed state if necessary 1928 if (child instanceof BubbleTextView) { 1929 BubbleTextView icon = (BubbleTextView) child; 1930 icon.clearPressedOrFocusedBackground(); 1931 } 1932 1933 mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 1934 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect, scale); 1935 b.recycle(); 1936 1937 // Show the scrolling indicator when you pick up an item 1938 showScrollingIndicator(false); 1939 } 1940 1941 void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, int screen, 1942 int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { 1943 View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); 1944 1945 final int[] cellXY = new int[2]; 1946 target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1947 addInScreen(view, container, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1948 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, cellXY[0], 1949 cellXY[1]); 1950 } 1951 1952 public boolean transitionStateShouldAllowDrop() { 1953 return ((!isSwitchingState() || mTransitionProgress > 0.5f) && mState != State.SMALL); 1954 } 1955 1956 /** 1957 * {@inheritDoc} 1958 */ 1959 public boolean acceptDrop(DragObject d) { 1960 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1961 CellLayout dropTargetLayout = mDropToLayout; 1962 if (d.dragSource != this) { 1963 // Don't accept the drop if we're not over a screen at time of drop 1964 if (dropTargetLayout == null) { 1965 return false; 1966 } 1967 if (!transitionStateShouldAllowDrop()) return false; 1968 1969 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 1970 d.dragView, mDragViewVisualCenter); 1971 1972 // We want the point to be mapped to the dragTarget. 1973 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 1974 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 1975 } else { 1976 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 1977 } 1978 1979 int spanX = 1; 1980 int spanY = 1; 1981 if (mDragInfo != null) { 1982 final CellLayout.CellInfo dragCellInfo = mDragInfo; 1983 spanX = dragCellInfo.spanX; 1984 spanY = dragCellInfo.spanY; 1985 } else { 1986 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 1987 spanX = dragInfo.spanX; 1988 spanY = dragInfo.spanY; 1989 } 1990 1991 int minSpanX = spanX; 1992 int minSpanY = spanY; 1993 if (d.dragInfo instanceof PendingAddWidgetInfo) { 1994 minSpanX = ((PendingAddWidgetInfo) d.dragInfo).minSpanX; 1995 minSpanY = ((PendingAddWidgetInfo) d.dragInfo).minSpanY; 1996 } 1997 1998 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 1999 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, dropTargetLayout, 2000 mTargetCell); 2001 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2002 mDragViewVisualCenter[1], mTargetCell); 2003 if (willCreateUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, 2004 mTargetCell, distance, true)) { 2005 return true; 2006 } 2007 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, 2008 mTargetCell, distance)) { 2009 return true; 2010 } 2011 2012 int[] resultSpan = new int[2]; 2013 mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], 2014 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2015 null, mTargetCell, resultSpan, CellLayout.MODE_ACCEPT_DROP); 2016 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2017 2018 // Don't accept the drop if there's no room for the item 2019 if (!foundCell) { 2020 // Don't show the message if we are dropping on the AllApps button and the hotseat 2021 // is full 2022 boolean isHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2023 if (mTargetCell != null && isHotseat) { 2024 Hotseat hotseat = mLauncher.getHotseat(); 2025 if (hotseat.isAllAppsButtonRank( 2026 hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { 2027 return false; 2028 } 2029 } 2030 2031 mLauncher.showOutOfSpaceMessage(isHotseat); 2032 return false; 2033 } 2034 } 2035 return true; 2036 } 2037 2038 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, float 2039 distance, boolean considerTimeout) { 2040 if (distance > mMaxDistanceForFolderCreation) return false; 2041 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2042 2043 if (dropOverView != null) { 2044 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2045 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2046 return false; 2047 } 2048 } 2049 2050 boolean hasntMoved = false; 2051 if (mDragInfo != null) { 2052 hasntMoved = dropOverView == mDragInfo.cell; 2053 } 2054 2055 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2056 return false; 2057 } 2058 2059 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2060 boolean willBecomeShortcut = 2061 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2062 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2063 2064 return (aboveShortcut && willBecomeShortcut); 2065 } 2066 2067 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell, 2068 float distance) { 2069 if (distance > mMaxDistanceForFolderCreation) return false; 2070 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2071 2072 if (dropOverView != null) { 2073 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2074 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2075 return false; 2076 } 2077 } 2078 2079 if (dropOverView instanceof FolderIcon) { 2080 FolderIcon fi = (FolderIcon) dropOverView; 2081 if (fi.acceptDrop(dragInfo)) { 2082 return true; 2083 } 2084 } 2085 return false; 2086 } 2087 2088 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2089 int[] targetCell, float distance, boolean external, DragView dragView, 2090 Runnable postAnimationRunnable) { 2091 if (distance > mMaxDistanceForFolderCreation) return false; 2092 View v = target.getChildAt(targetCell[0], targetCell[1]); 2093 2094 boolean hasntMoved = false; 2095 if (mDragInfo != null) { 2096 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2097 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2098 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2099 } 2100 2101 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2102 mCreateUserFolderOnDrop = false; 2103 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 2104 2105 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2106 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2107 2108 if (aboveShortcut && willBecomeShortcut) { 2109 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2110 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2111 // if the drag started here, we need to remove it from the workspace 2112 if (!external) { 2113 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2114 } 2115 2116 Rect folderLocation = new Rect(); 2117 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2118 target.removeView(v); 2119 2120 FolderIcon fi = 2121 mLauncher.addFolder(target, container, screen, targetCell[0], targetCell[1]); 2122 destInfo.cellX = -1; 2123 destInfo.cellY = -1; 2124 sourceInfo.cellX = -1; 2125 sourceInfo.cellY = -1; 2126 2127 // If the dragView is null, we can't animate 2128 boolean animate = dragView != null; 2129 if (animate) { 2130 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2131 postAnimationRunnable); 2132 } else { 2133 fi.addItem(destInfo); 2134 fi.addItem(sourceInfo); 2135 } 2136 return true; 2137 } 2138 return false; 2139 } 2140 2141 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2142 float distance, DragObject d, boolean external) { 2143 if (distance > mMaxDistanceForFolderCreation) return false; 2144 2145 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2146 if (!mAddToExistingFolderOnDrop) return false; 2147 mAddToExistingFolderOnDrop = false; 2148 2149 if (dropOverView instanceof FolderIcon) { 2150 FolderIcon fi = (FolderIcon) dropOverView; 2151 if (fi.acceptDrop(d.dragInfo)) { 2152 fi.onDrop(d); 2153 2154 // if the drag started here, we need to remove it from the workspace 2155 if (!external) { 2156 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2157 } 2158 return true; 2159 } 2160 } 2161 return false; 2162 } 2163 2164 public void onDrop(final DragObject d) { 2165 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2166 mDragViewVisualCenter); 2167 2168 CellLayout dropTargetLayout = mDropToLayout; 2169 2170 // We want the point to be mapped to the dragTarget. 2171 if (dropTargetLayout != null) { 2172 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 2173 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2174 } else { 2175 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 2176 } 2177 } 2178 2179 int snapScreen = -1; 2180 boolean resizeOnDrop = false; 2181 if (d.dragSource != this) { 2182 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2183 (int) mDragViewVisualCenter[1] }; 2184 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2185 } else if (mDragInfo != null) { 2186 final View cell = mDragInfo.cell; 2187 2188 Runnable resizeRunnable = null; 2189 if (dropTargetLayout != null) { 2190 // Move internally 2191 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2192 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2193 long container = hasMovedIntoHotseat ? 2194 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2195 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2196 int screen = (mTargetCell[0] < 0) ? 2197 mDragInfo.screen : indexOfChild(dropTargetLayout); 2198 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2199 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2200 // First we find the cell nearest to point at which the item is 2201 // dropped, without any consideration to whether there is an item there. 2202 2203 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2204 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2205 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2206 mDragViewVisualCenter[1], mTargetCell); 2207 2208 // If the item being dropped is a shortcut and the nearest drop 2209 // cell also contains a shortcut, then create a folder with the two shortcuts. 2210 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2211 dropTargetLayout, mTargetCell, distance, false, d.dragView, null)) { 2212 return; 2213 } 2214 2215 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, 2216 distance, d, false)) { 2217 return; 2218 } 2219 2220 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2221 // we need to find the nearest cell location that is vacant 2222 ItemInfo item = (ItemInfo) d.dragInfo; 2223 int minSpanX = item.spanX; 2224 int minSpanY = item.spanY; 2225 if (item.minSpanX > 0 && item.minSpanY > 0) { 2226 minSpanX = item.minSpanX; 2227 minSpanY = item.minSpanY; 2228 } 2229 2230 int[] resultSpan = new int[2]; 2231 mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], 2232 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, cell, 2233 mTargetCell, resultSpan, CellLayout.MODE_ON_DROP); 2234 2235 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2236 2237 // if the widget resizes on drop 2238 if (foundCell && (cell instanceof AppWidgetHostView) && 2239 (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY)) { 2240 resizeOnDrop = true; 2241 item.spanX = resultSpan[0]; 2242 item.spanY = resultSpan[1]; 2243 AppWidgetHostView awhv = (AppWidgetHostView) cell; 2244 AppWidgetResizeFrame.updateWidgetSizeRanges(awhv, mLauncher, resultSpan[0], 2245 resultSpan[1]); 2246 } 2247 2248 if (mCurrentPage != screen && !hasMovedIntoHotseat) { 2249 snapScreen = screen; 2250 snapToPage(screen); 2251 } 2252 2253 if (foundCell) { 2254 final ItemInfo info = (ItemInfo) cell.getTag(); 2255 if (hasMovedLayouts) { 2256 // Reparent the view 2257 getParentCellLayoutForView(cell).removeView(cell); 2258 addInScreen(cell, container, screen, mTargetCell[0], mTargetCell[1], 2259 info.spanX, info.spanY); 2260 } 2261 2262 // update the item's position after drop 2263 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2264 lp.cellX = lp.tmpCellX = mTargetCell[0]; 2265 lp.cellY = lp.tmpCellY = mTargetCell[1]; 2266 lp.cellHSpan = item.spanX; 2267 lp.cellVSpan = item.spanY; 2268 lp.isLockedToGrid = true; 2269 cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screen, 2270 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2271 2272 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2273 cell instanceof LauncherAppWidgetHostView) { 2274 final CellLayout cellLayout = dropTargetLayout; 2275 // We post this call so that the widget has a chance to be placed 2276 // in its final location 2277 2278 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2279 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2280 if (pinfo != null && 2281 pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2282 final Runnable addResizeFrame = new Runnable() { 2283 public void run() { 2284 DragLayer dragLayer = mLauncher.getDragLayer(); 2285 dragLayer.addResizeFrame(info, hostView, cellLayout); 2286 } 2287 }; 2288 resizeRunnable = (new Runnable() { 2289 public void run() { 2290 if (!isPageMoving()) { 2291 addResizeFrame.run(); 2292 } else { 2293 mDelayedResizeRunnable = addResizeFrame; 2294 } 2295 } 2296 }); 2297 } 2298 } 2299 2300 LauncherModel.moveItemInDatabase(mLauncher, info, container, screen, lp.cellX, 2301 lp.cellY); 2302 } else { 2303 // If we can't find a drop location, we return the item to its original position 2304 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2305 mTargetCell[0] = lp.cellX; 2306 mTargetCell[1] = lp.cellY; 2307 CellLayout layout = (CellLayout) cell.getParent().getParent(); 2308 layout.markCellsAsOccupiedForView(cell); 2309 } 2310 } 2311 2312 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2313 final Runnable finalResizeRunnable = resizeRunnable; 2314 // Prepare it to be animated into its new position 2315 // This must be called after the view has been re-parented 2316 final Runnable onCompleteRunnable = new Runnable() { 2317 @Override 2318 public void run() { 2319 mAnimatingViewIntoPlace = false; 2320 updateChildrenLayersEnabled(false); 2321 if (finalResizeRunnable != null) { 2322 finalResizeRunnable.run(); 2323 } 2324 } 2325 }; 2326 mAnimatingViewIntoPlace = true; 2327 if (d.dragView.hasDrawn()) { 2328 final ItemInfo info = (ItemInfo) cell.getTag(); 2329 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET) { 2330 int animationType = resizeOnDrop ? ANIMATE_INTO_POSITION_AND_RESIZE : 2331 ANIMATE_INTO_POSITION_AND_DISAPPEAR; 2332 animateWidgetDrop(info, parent, d.dragView, 2333 onCompleteRunnable, animationType, cell, false); 2334 } else { 2335 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2336 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2337 onCompleteRunnable, this); 2338 } 2339 } else { 2340 d.deferDragViewCleanupPostAnimation = false; 2341 cell.setVisibility(VISIBLE); 2342 } 2343 parent.onDropChild(cell); 2344 } 2345 } 2346 2347 public void setFinalScrollForPageChange(int screen) { 2348 if (screen >= 0) { 2349 mSavedScrollX = getScrollX(); 2350 CellLayout cl = (CellLayout) getChildAt(screen); 2351 mSavedTranslationX = cl.getTranslationX(); 2352 mSavedRotationY = cl.getRotationY(); 2353 final int newX = getChildOffset(screen) - getRelativeChildOffset(screen); 2354 setScrollX(newX); 2355 cl.setTranslationX(0f); 2356 cl.setRotationY(0f); 2357 } 2358 } 2359 2360 public void resetFinalScrollForPageChange(int screen) { 2361 if (screen >= 0) { 2362 CellLayout cl = (CellLayout) getChildAt(screen); 2363 setScrollX(mSavedScrollX); 2364 cl.setTranslationX(mSavedTranslationX); 2365 cl.setRotationY(mSavedRotationY); 2366 } 2367 } 2368 2369 public void getViewLocationRelativeToSelf(View v, int[] location) { 2370 getLocationInWindow(location); 2371 int x = location[0]; 2372 int y = location[1]; 2373 2374 v.getLocationInWindow(location); 2375 int vX = location[0]; 2376 int vY = location[1]; 2377 2378 location[0] = vX - x; 2379 location[1] = vY - y; 2380 } 2381 2382 public void onDragEnter(DragObject d) { 2383 mDragEnforcer.onDragEnter(); 2384 mCreateUserFolderOnDrop = false; 2385 mAddToExistingFolderOnDrop = false; 2386 2387 mDropToLayout = null; 2388 CellLayout layout = getCurrentDropLayout(); 2389 setCurrentDropLayout(layout); 2390 setCurrentDragOverlappingLayout(layout); 2391 2392 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2393 // don't need to show the outlines 2394 if (LauncherApplication.isScreenLarge()) { 2395 showOutlines(); 2396 } 2397 } 2398 2399 static Rect getCellLayoutMetrics(Launcher launcher, int orientation) { 2400 Resources res = launcher.getResources(); 2401 Display display = launcher.getWindowManager().getDefaultDisplay(); 2402 Point smallestSize = new Point(); 2403 Point largestSize = new Point(); 2404 display.getCurrentSizeRange(smallestSize, largestSize); 2405 if (orientation == CellLayout.LANDSCAPE) { 2406 if (mLandscapeCellLayoutMetrics == null) { 2407 int paddingLeft = res.getDimensionPixelSize(R.dimen.workspace_left_padding_land); 2408 int paddingRight = res.getDimensionPixelSize(R.dimen.workspace_right_padding_land); 2409 int paddingTop = res.getDimensionPixelSize(R.dimen.workspace_top_padding_land); 2410 int paddingBottom = res.getDimensionPixelSize(R.dimen.workspace_bottom_padding_land); 2411 int width = largestSize.x - paddingLeft - paddingRight; 2412 int height = smallestSize.y - paddingTop - paddingBottom; 2413 mLandscapeCellLayoutMetrics = new Rect(); 2414 CellLayout.getMetrics(mLandscapeCellLayoutMetrics, res, 2415 width, height, LauncherModel.getCellCountX(), LauncherModel.getCellCountY(), 2416 orientation); 2417 } 2418 return mLandscapeCellLayoutMetrics; 2419 } else if (orientation == CellLayout.PORTRAIT) { 2420 if (mPortraitCellLayoutMetrics == null) { 2421 int paddingLeft = res.getDimensionPixelSize(R.dimen.workspace_left_padding_land); 2422 int paddingRight = res.getDimensionPixelSize(R.dimen.workspace_right_padding_land); 2423 int paddingTop = res.getDimensionPixelSize(R.dimen.workspace_top_padding_land); 2424 int paddingBottom = res.getDimensionPixelSize(R.dimen.workspace_bottom_padding_land); 2425 int width = smallestSize.x - paddingLeft - paddingRight; 2426 int height = largestSize.y - paddingTop - paddingBottom; 2427 mPortraitCellLayoutMetrics = new Rect(); 2428 CellLayout.getMetrics(mPortraitCellLayoutMetrics, res, 2429 width, height, LauncherModel.getCellCountX(), LauncherModel.getCellCountY(), 2430 orientation); 2431 } 2432 return mPortraitCellLayoutMetrics; 2433 } 2434 return null; 2435 } 2436 2437 public void onDragExit(DragObject d) { 2438 mDragEnforcer.onDragExit(); 2439 2440 // Here we store the final page that will be dropped to, if the workspace in fact 2441 // receives the drop 2442 if (mInScrollArea) { 2443 if (isPageMoving()) { 2444 // If the user drops while the page is scrolling, we should use that page as the 2445 // destination instead of the page that is being hovered over. 2446 mDropToLayout = (CellLayout) getPageAt(getNextPage()); 2447 } else { 2448 mDropToLayout = mDragOverlappingLayout; 2449 } 2450 } else { 2451 mDropToLayout = mDragTargetLayout; 2452 } 2453 2454 if (mDragMode == DRAG_MODE_CREATE_FOLDER) { 2455 mCreateUserFolderOnDrop = true; 2456 } else if (mDragMode == DRAG_MODE_ADD_TO_FOLDER) { 2457 mAddToExistingFolderOnDrop = true; 2458 } 2459 2460 // Reset the scroll area and previous drag target 2461 onResetScrollArea(); 2462 setCurrentDropLayout(null); 2463 setCurrentDragOverlappingLayout(null); 2464 2465 mSpringLoadedDragController.cancel(); 2466 2467 if (!mIsPageMoving) { 2468 hideOutlines(); 2469 } 2470 } 2471 2472 void setCurrentDropLayout(CellLayout layout) { 2473 if (mDragTargetLayout != null) { 2474 mDragTargetLayout.revertTempState(); 2475 mDragTargetLayout.onDragExit(); 2476 } 2477 mDragTargetLayout = layout; 2478 if (mDragTargetLayout != null) { 2479 mDragTargetLayout.onDragEnter(); 2480 } 2481 cleanupReorder(true); 2482 cleanupFolderCreation(); 2483 setCurrentDropOverCell(-1, -1); 2484 } 2485 2486 void setCurrentDragOverlappingLayout(CellLayout layout) { 2487 if (mDragOverlappingLayout != null) { 2488 mDragOverlappingLayout.setIsDragOverlapping(false); 2489 } 2490 mDragOverlappingLayout = layout; 2491 if (mDragOverlappingLayout != null) { 2492 mDragOverlappingLayout.setIsDragOverlapping(true); 2493 } 2494 invalidate(); 2495 } 2496 2497 void setCurrentDropOverCell(int x, int y) { 2498 if (x != mDragOverX || y != mDragOverY) { 2499 mDragOverX = x; 2500 mDragOverY = y; 2501 setDragMode(DRAG_MODE_NONE); 2502 } 2503 } 2504 2505 void setDragMode(int dragMode) { 2506 if (dragMode != mDragMode) { 2507 if (dragMode == DRAG_MODE_NONE) { 2508 cleanupAddToFolder(); 2509 // We don't want to cancel the re-order alarm every time the target cell changes 2510 // as this feels to slow / unresponsive. 2511 cleanupReorder(false); 2512 cleanupFolderCreation(); 2513 } else if (dragMode == DRAG_MODE_ADD_TO_FOLDER) { 2514 cleanupReorder(true); 2515 cleanupFolderCreation(); 2516 } else if (dragMode == DRAG_MODE_CREATE_FOLDER) { 2517 cleanupAddToFolder(); 2518 cleanupReorder(true); 2519 } else if (dragMode == DRAG_MODE_REORDER) { 2520 cleanupAddToFolder(); 2521 cleanupFolderCreation(); 2522 } 2523 mDragMode = dragMode; 2524 } 2525 } 2526 2527 private void cleanupFolderCreation() { 2528 if (mDragFolderRingAnimator != null) { 2529 mDragFolderRingAnimator.animateToNaturalState(); 2530 } 2531 mFolderCreationAlarm.cancelAlarm(); 2532 } 2533 2534 private void cleanupAddToFolder() { 2535 if (mDragOverFolderIcon != null) { 2536 mDragOverFolderIcon.onDragExit(null); 2537 mDragOverFolderIcon = null; 2538 } 2539 } 2540 2541 private void cleanupReorder(boolean cancelAlarm) { 2542 // Any pending reorders are canceled 2543 if (cancelAlarm) { 2544 mReorderAlarm.cancelAlarm(); 2545 } 2546 mLastReorderX = -1; 2547 mLastReorderY = -1; 2548 } 2549 2550 public DropTarget getDropTargetDelegate(DragObject d) { 2551 return null; 2552 } 2553 2554 /* 2555 * 2556 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2557 * coordinate space. The argument xy is modified with the return result. 2558 * 2559 */ 2560 void mapPointFromSelfToChild(View v, float[] xy) { 2561 mapPointFromSelfToChild(v, xy, null); 2562 } 2563 2564 /* 2565 * 2566 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2567 * coordinate space. The argument xy is modified with the return result. 2568 * 2569 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2570 * computing it itself; we use this to avoid redundant matrix inversions in 2571 * findMatchingPageForDragOver 2572 * 2573 */ 2574 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2575 if (cachedInverseMatrix == null) { 2576 v.getMatrix().invert(mTempInverseMatrix); 2577 cachedInverseMatrix = mTempInverseMatrix; 2578 } 2579 int scrollX = getScrollX(); 2580 if (mNextPage != INVALID_PAGE) { 2581 scrollX = mScroller.getFinalX(); 2582 } 2583 xy[0] = xy[0] + scrollX - v.getLeft(); 2584 xy[1] = xy[1] + getScrollY() - v.getTop(); 2585 cachedInverseMatrix.mapPoints(xy); 2586 } 2587 2588 2589 void mapPointFromSelfToHotseatLayout(Hotseat hotseat, float[] xy) { 2590 hotseat.getLayout().getMatrix().invert(mTempInverseMatrix); 2591 xy[0] = xy[0] - hotseat.getLeft() - hotseat.getLayout().getLeft(); 2592 xy[1] = xy[1] - hotseat.getTop() - hotseat.getLayout().getTop(); 2593 mTempInverseMatrix.mapPoints(xy); 2594 } 2595 2596 /* 2597 * 2598 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2599 * the parent View's coordinate space. The argument xy is modified with the return result. 2600 * 2601 */ 2602 void mapPointFromChildToSelf(View v, float[] xy) { 2603 v.getMatrix().mapPoints(xy); 2604 int scrollX = getScrollX(); 2605 if (mNextPage != INVALID_PAGE) { 2606 scrollX = mScroller.getFinalX(); 2607 } 2608 xy[0] -= (scrollX - v.getLeft()); 2609 xy[1] -= (getScrollY() - v.getTop()); 2610 } 2611 2612 static private float squaredDistance(float[] point1, float[] point2) { 2613 float distanceX = point1[0] - point2[0]; 2614 float distanceY = point2[1] - point2[1]; 2615 return distanceX * distanceX + distanceY * distanceY; 2616 } 2617 2618 /* 2619 * 2620 * Returns true if the passed CellLayout cl overlaps with dragView 2621 * 2622 */ 2623 boolean overlaps(CellLayout cl, DragView dragView, 2624 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2625 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2626 final float[] draggedItemTopLeft = mTempDragCoordinates; 2627 draggedItemTopLeft[0] = dragViewX; 2628 draggedItemTopLeft[1] = dragViewY; 2629 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2630 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2631 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2632 2633 // Transform the dragged item's top left coordinates 2634 // to the CellLayout's local coordinates 2635 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2636 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2637 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2638 2639 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2640 // Transform the dragged item's bottom right coordinates 2641 // to the CellLayout's local coordinates 2642 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2643 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2644 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2645 2646 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2647 float overlap = (overlapRegionRight - overlapRegionLeft) * 2648 (overlapRegionBottom - overlapRegionTop); 2649 if (overlap > 0) { 2650 return true; 2651 } 2652 } 2653 } 2654 return false; 2655 } 2656 2657 /* 2658 * 2659 * This method returns the CellLayout that is currently being dragged to. In order to drag 2660 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2661 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2662 * 2663 * Return null if no CellLayout is currently being dragged over 2664 * 2665 */ 2666 private CellLayout findMatchingPageForDragOver( 2667 DragView dragView, float originX, float originY, boolean exact) { 2668 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2669 // with the item being dragged and then choose the one that's closest to the touch point 2670 final int screenCount = getChildCount(); 2671 CellLayout bestMatchingScreen = null; 2672 float smallestDistSoFar = Float.MAX_VALUE; 2673 2674 for (int i = 0; i < screenCount; i++) { 2675 CellLayout cl = (CellLayout) getChildAt(i); 2676 2677 final float[] touchXy = {originX, originY}; 2678 // Transform the touch coordinates to the CellLayout's local coordinates 2679 // If the touch point is within the bounds of the cell layout, we can return immediately 2680 cl.getMatrix().invert(mTempInverseMatrix); 2681 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2682 2683 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2684 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2685 return cl; 2686 } 2687 2688 if (!exact) { 2689 // Get the center of the cell layout in screen coordinates 2690 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2691 cellLayoutCenter[0] = cl.getWidth()/2; 2692 cellLayoutCenter[1] = cl.getHeight()/2; 2693 mapPointFromChildToSelf(cl, cellLayoutCenter); 2694 2695 touchXy[0] = originX; 2696 touchXy[1] = originY; 2697 2698 // Calculate the distance between the center of the CellLayout 2699 // and the touch point 2700 float dist = squaredDistance(touchXy, cellLayoutCenter); 2701 2702 if (dist < smallestDistSoFar) { 2703 smallestDistSoFar = dist; 2704 bestMatchingScreen = cl; 2705 } 2706 } 2707 } 2708 return bestMatchingScreen; 2709 } 2710 2711 // This is used to compute the visual center of the dragView. This point is then 2712 // used to visualize drop locations and determine where to drop an item. The idea is that 2713 // the visual center represents the user's interpretation of where the item is, and hence 2714 // is the appropriate point to use when determining drop location. 2715 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2716 DragView dragView, float[] recycle) { 2717 float res[]; 2718 if (recycle == null) { 2719 res = new float[2]; 2720 } else { 2721 res = recycle; 2722 } 2723 2724 // First off, the drag view has been shifted in a way that is not represented in the 2725 // x and y values or the x/yOffsets. Here we account for that shift. 2726 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2727 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2728 2729 // These represent the visual top and left of drag view if a dragRect was provided. 2730 // If a dragRect was not provided, then they correspond to the actual view left and 2731 // top, as the dragRect is in that case taken to be the entire dragView. 2732 // R.dimen.dragViewOffsetY. 2733 int left = x - xOffset; 2734 int top = y - yOffset; 2735 2736 // In order to find the visual center, we shift by half the dragRect 2737 res[0] = left + dragView.getDragRegion().width() / 2; 2738 res[1] = top + dragView.getDragRegion().height() / 2; 2739 2740 return res; 2741 } 2742 2743 private boolean isDragWidget(DragObject d) { 2744 return (d.dragInfo instanceof LauncherAppWidgetInfo || 2745 d.dragInfo instanceof PendingAddWidgetInfo); 2746 } 2747 private boolean isExternalDragWidget(DragObject d) { 2748 return d.dragSource != this && isDragWidget(d); 2749 } 2750 2751 public void onDragOver(DragObject d) { 2752 // Skip drag over events while we are dragging over side pages 2753 if (mInScrollArea || mIsSwitchingState || mState == State.SMALL) return; 2754 2755 Rect r = new Rect(); 2756 CellLayout layout = null; 2757 ItemInfo item = (ItemInfo) d.dragInfo; 2758 2759 // Ensure that we have proper spans for the item that we are dropping 2760 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2761 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2762 d.dragView, mDragViewVisualCenter); 2763 2764 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2765 // Identify whether we have dragged over a side page 2766 if (isSmall()) { 2767 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 2768 mLauncher.getHotseat().getHitRect(r); 2769 if (r.contains(d.x, d.y)) { 2770 layout = mLauncher.getHotseat().getLayout(); 2771 } 2772 } 2773 if (layout == null) { 2774 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false); 2775 } 2776 if (layout != mDragTargetLayout) { 2777 2778 setCurrentDropLayout(layout); 2779 setCurrentDragOverlappingLayout(layout); 2780 2781 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 2782 if (isInSpringLoadedMode) { 2783 if (mLauncher.isHotseatLayout(layout)) { 2784 mSpringLoadedDragController.cancel(); 2785 } else { 2786 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2787 } 2788 } 2789 } 2790 } else { 2791 // Test to see if we are over the hotseat otherwise just use the current page 2792 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 2793 mLauncher.getHotseat().getHitRect(r); 2794 if (r.contains(d.x, d.y)) { 2795 layout = mLauncher.getHotseat().getLayout(); 2796 } 2797 } 2798 if (layout == null) { 2799 layout = getCurrentDropLayout(); 2800 } 2801 if (layout != mDragTargetLayout) { 2802 setCurrentDropLayout(layout); 2803 setCurrentDragOverlappingLayout(layout); 2804 } 2805 } 2806 2807 // Handle the drag over 2808 if (mDragTargetLayout != null) { 2809 // We want the point to be mapped to the dragTarget. 2810 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2811 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2812 } else { 2813 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2814 } 2815 2816 ItemInfo info = (ItemInfo) d.dragInfo; 2817 2818 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2819 (int) mDragViewVisualCenter[1], item.spanX, item.spanY, 2820 mDragTargetLayout, mTargetCell); 2821 2822 setCurrentDropOverCell(mTargetCell[0], mTargetCell[1]); 2823 2824 float targetCellDistance = mDragTargetLayout.getDistanceFromCell( 2825 mDragViewVisualCenter[0], mDragViewVisualCenter[1], mTargetCell); 2826 2827 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2828 mTargetCell[1]); 2829 2830 manageFolderFeedback(info, mDragTargetLayout, mTargetCell, 2831 targetCellDistance, dragOverView); 2832 2833 int minSpanX = item.spanX; 2834 int minSpanY = item.spanY; 2835 if (item.minSpanX > 0 && item.minSpanY > 0) { 2836 minSpanX = item.minSpanX; 2837 minSpanY = item.minSpanY; 2838 } 2839 2840 boolean nearestDropOccupied = mDragTargetLayout.isNearestDropLocationOccupied((int) 2841 mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], item.spanX, 2842 item.spanY, child, mTargetCell); 2843 2844 if (!nearestDropOccupied) { 2845 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2846 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2847 mTargetCell[0], mTargetCell[1], item.spanX, item.spanY, false, 2848 d.dragView.getDragVisualizeOffset(), d.dragView.getDragRegion()); 2849 } else if ((mDragMode == DRAG_MODE_NONE || mDragMode == DRAG_MODE_REORDER) 2850 && !mReorderAlarm.alarmPending() && (mLastReorderX != mTargetCell[0] || 2851 mLastReorderY != mTargetCell[1])) { 2852 2853 // Otherwise, if we aren't adding to or creating a folder and there's no pending 2854 // reorder, then we schedule a reorder 2855 ReorderAlarmListener listener = new ReorderAlarmListener(mDragViewVisualCenter, 2856 minSpanX, minSpanY, item.spanX, item.spanY, d.dragView, child); 2857 mReorderAlarm.setOnAlarmListener(listener); 2858 mReorderAlarm.setAlarm(REORDER_TIMEOUT); 2859 } 2860 2861 if (mDragMode == DRAG_MODE_CREATE_FOLDER || mDragMode == DRAG_MODE_ADD_TO_FOLDER || 2862 !nearestDropOccupied) { 2863 if (mDragTargetLayout != null) { 2864 mDragTargetLayout.revertTempState(); 2865 } 2866 } 2867 } 2868 } 2869 2870 private void manageFolderFeedback(ItemInfo info, CellLayout targetLayout, 2871 int[] targetCell, float distance, View dragOverView) { 2872 boolean userFolderPending = willCreateUserFolder(info, targetLayout, targetCell, distance, 2873 false); 2874 2875 if (mDragMode == DRAG_MODE_NONE && userFolderPending && 2876 !mFolderCreationAlarm.alarmPending()) { 2877 mFolderCreationAlarm.setOnAlarmListener(new 2878 FolderCreationAlarmListener(targetLayout, targetCell[0], targetCell[1])); 2879 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2880 return; 2881 } 2882 2883 boolean willAddToFolder = 2884 willAddToExistingUserFolder(info, targetLayout, targetCell, distance); 2885 2886 if (willAddToFolder && mDragMode == DRAG_MODE_NONE) { 2887 mDragOverFolderIcon = ((FolderIcon) dragOverView); 2888 mDragOverFolderIcon.onDragEnter(info); 2889 if (targetLayout != null) { 2890 targetLayout.clearDragOutlines(); 2891 } 2892 setDragMode(DRAG_MODE_ADD_TO_FOLDER); 2893 return; 2894 } 2895 2896 if (mDragMode == DRAG_MODE_ADD_TO_FOLDER && !willAddToFolder) { 2897 setDragMode(DRAG_MODE_NONE); 2898 } 2899 if (mDragMode == DRAG_MODE_CREATE_FOLDER && !userFolderPending) { 2900 setDragMode(DRAG_MODE_NONE); 2901 } 2902 2903 return; 2904 } 2905 2906 class FolderCreationAlarmListener implements OnAlarmListener { 2907 CellLayout layout; 2908 int cellX; 2909 int cellY; 2910 2911 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 2912 this.layout = layout; 2913 this.cellX = cellX; 2914 this.cellY = cellY; 2915 } 2916 2917 public void onAlarm(Alarm alarm) { 2918 if (mDragFolderRingAnimator == null) { 2919 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 2920 } 2921 mDragFolderRingAnimator.setCell(cellX, cellY); 2922 mDragFolderRingAnimator.setCellLayout(layout); 2923 mDragFolderRingAnimator.animateToAcceptState(); 2924 layout.showFolderAccept(mDragFolderRingAnimator); 2925 layout.clearDragOutlines(); 2926 setDragMode(DRAG_MODE_CREATE_FOLDER); 2927 } 2928 } 2929 2930 class ReorderAlarmListener implements OnAlarmListener { 2931 float[] dragViewCenter; 2932 int minSpanX, minSpanY, spanX, spanY; 2933 DragView dragView; 2934 View child; 2935 2936 public ReorderAlarmListener(float[] dragViewCenter, int minSpanX, int minSpanY, int spanX, 2937 int spanY, DragView dragView, View child) { 2938 this.dragViewCenter = dragViewCenter; 2939 this.minSpanX = minSpanX; 2940 this.minSpanY = minSpanY; 2941 this.spanX = spanX; 2942 this.spanY = spanY; 2943 this.child = child; 2944 this.dragView = dragView; 2945 } 2946 2947 public void onAlarm(Alarm alarm) { 2948 int[] resultSpan = new int[2]; 2949 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2950 (int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell); 2951 mLastReorderX = mTargetCell[0]; 2952 mLastReorderY = mTargetCell[1]; 2953 2954 mTargetCell = mDragTargetLayout.createArea((int) mDragViewVisualCenter[0], 2955 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2956 child, mTargetCell, resultSpan, CellLayout.MODE_DRAG_OVER); 2957 2958 if (mTargetCell[0] < 0 || mTargetCell[1] < 0) { 2959 mDragTargetLayout.revertTempState(); 2960 } else { 2961 setDragMode(DRAG_MODE_REORDER); 2962 } 2963 2964 boolean resize = resultSpan[0] != spanX || resultSpan[1] != spanY; 2965 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2966 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2967 mTargetCell[0], mTargetCell[1], resultSpan[0], resultSpan[1], resize, 2968 dragView.getDragVisualizeOffset(), dragView.getDragRegion()); 2969 } 2970 } 2971 2972 @Override 2973 public void getHitRect(Rect outRect) { 2974 // We want the workspace to have the whole area of the display (it will find the correct 2975 // cell layout to drop to in the existing drag/drop logic. 2976 outRect.set(0, 0, mDisplaySize.x, mDisplaySize.y); 2977 } 2978 2979 /** 2980 * Add the item specified by dragInfo to the given layout. 2981 * @return true if successful 2982 */ 2983 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2984 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2985 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2986 return true; 2987 } 2988 mLauncher.showOutOfSpaceMessage(mLauncher.isHotseatLayout(layout)); 2989 return false; 2990 } 2991 2992 private void onDropExternal(int[] touchXY, Object dragInfo, 2993 CellLayout cellLayout, boolean insertAtFirst) { 2994 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 2995 } 2996 2997 /** 2998 * Drop an item that didn't originate on one of the workspace screens. 2999 * It may have come from Launcher (e.g. from all apps or customize), or it may have 3000 * come from another app altogether. 3001 * 3002 * NOTE: This can also be called when we are outside of a drag event, when we want 3003 * to add an item to one of the workspace screens. 3004 */ 3005 private void onDropExternal(final int[] touchXY, final Object dragInfo, 3006 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 3007 final Runnable exitSpringLoadedRunnable = new Runnable() { 3008 @Override 3009 public void run() { 3010 mLauncher.exitSpringLoadedDragModeDelayed(true, false, null); 3011 } 3012 }; 3013 3014 ItemInfo info = (ItemInfo) dragInfo; 3015 int spanX = info.spanX; 3016 int spanY = info.spanY; 3017 if (mDragInfo != null) { 3018 spanX = mDragInfo.spanX; 3019 spanY = mDragInfo.spanY; 3020 } 3021 3022 final long container = mLauncher.isHotseatLayout(cellLayout) ? 3023 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 3024 LauncherSettings.Favorites.CONTAINER_DESKTOP; 3025 final int screen = indexOfChild(cellLayout); 3026 if (!mLauncher.isHotseatLayout(cellLayout) && screen != mCurrentPage 3027 && mState != State.SPRING_LOADED) { 3028 snapToPage(screen); 3029 } 3030 3031 if (info instanceof PendingAddItemInfo) { 3032 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 3033 3034 boolean findNearestVacantCell = true; 3035 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 3036 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3037 cellLayout, mTargetCell); 3038 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3039 mDragViewVisualCenter[1], mTargetCell); 3040 if (willCreateUserFolder((ItemInfo) d.dragInfo, cellLayout, mTargetCell, 3041 distance, true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 3042 cellLayout, mTargetCell, distance)) { 3043 findNearestVacantCell = false; 3044 } 3045 } 3046 3047 final ItemInfo item = (ItemInfo) d.dragInfo; 3048 boolean updateWidgetSize = false; 3049 if (findNearestVacantCell) { 3050 int minSpanX = item.spanX; 3051 int minSpanY = item.spanY; 3052 if (item.minSpanX > 0 && item.minSpanY > 0) { 3053 minSpanX = item.minSpanX; 3054 minSpanY = item.minSpanY; 3055 } 3056 int[] resultSpan = new int[2]; 3057 mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], 3058 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, info.spanX, info.spanY, 3059 null, mTargetCell, resultSpan, CellLayout.MODE_ON_DROP_EXTERNAL); 3060 3061 if (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY) { 3062 updateWidgetSize = true; 3063 } 3064 item.spanX = resultSpan[0]; 3065 item.spanY = resultSpan[1]; 3066 } 3067 3068 Runnable onAnimationCompleteRunnable = new Runnable() { 3069 @Override 3070 public void run() { 3071 // When dragging and dropping from customization tray, we deal with creating 3072 // widgets/shortcuts/folders in a slightly different way 3073 switch (pendingInfo.itemType) { 3074 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 3075 int span[] = new int[2]; 3076 span[0] = item.spanX; 3077 span[1] = item.spanY; 3078 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, 3079 container, screen, mTargetCell, span, null); 3080 break; 3081 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3082 mLauncher.processShortcutFromDrop(pendingInfo.componentName, 3083 container, screen, mTargetCell, null); 3084 break; 3085 default: 3086 throw new IllegalStateException("Unknown item type: " + 3087 pendingInfo.itemType); 3088 } 3089 } 3090 }; 3091 View finalView = pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET 3092 ? ((PendingAddWidgetInfo) pendingInfo).boundWidget : null; 3093 3094 if (finalView instanceof AppWidgetHostView && updateWidgetSize) { 3095 AppWidgetHostView awhv = (AppWidgetHostView) finalView; 3096 AppWidgetResizeFrame.updateWidgetSizeRanges(awhv, mLauncher, item.spanX, 3097 item.spanY); 3098 } 3099 3100 int animationStyle = ANIMATE_INTO_POSITION_AND_DISAPPEAR; 3101 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && 3102 ((PendingAddWidgetInfo) pendingInfo).info.configure != null) { 3103 animationStyle = ANIMATE_INTO_POSITION_AND_REMAIN; 3104 } 3105 animateWidgetDrop(info, cellLayout, d.dragView, onAnimationCompleteRunnable, 3106 animationStyle, finalView, true); 3107 } else { 3108 // This is for other drag/drop cases, like dragging from All Apps 3109 View view = null; 3110 3111 switch (info.itemType) { 3112 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 3113 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3114 if (info.container == NO_ID && info instanceof ApplicationInfo) { 3115 // Came from all apps -- make a copy 3116 info = new ShortcutInfo((ApplicationInfo) info); 3117 } 3118 view = mLauncher.createShortcut(R.layout.application, cellLayout, 3119 (ShortcutInfo) info); 3120 break; 3121 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 3122 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 3123 (FolderInfo) info, mIconCache); 3124 break; 3125 default: 3126 throw new IllegalStateException("Unknown item type: " + info.itemType); 3127 } 3128 3129 // First we find the cell nearest to point at which the item is 3130 // dropped, without any consideration to whether there is an item there. 3131 if (touchXY != null) { 3132 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3133 cellLayout, mTargetCell); 3134 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3135 mDragViewVisualCenter[1], mTargetCell); 3136 d.postAnimationRunnable = exitSpringLoadedRunnable; 3137 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, distance, 3138 true, d.dragView, d.postAnimationRunnable)) { 3139 return; 3140 } 3141 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, distance, d, 3142 true)) { 3143 return; 3144 } 3145 } 3146 3147 if (touchXY != null) { 3148 // when dragging and dropping, just find the closest free spot 3149 mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], 3150 (int) mDragViewVisualCenter[1], 1, 1, 1, 1, 3151 null, mTargetCell, null, CellLayout.MODE_ON_DROP_EXTERNAL); 3152 } else { 3153 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3154 } 3155 addInScreen(view, container, screen, mTargetCell[0], mTargetCell[1], info.spanX, 3156 info.spanY, insertAtFirst); 3157 cellLayout.onDropChild(view); 3158 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 3159 cellLayout.getShortcutsAndWidgets().measureChild(view); 3160 3161 3162 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, 3163 lp.cellX, lp.cellY); 3164 3165 if (d.dragView != null) { 3166 // We wrap the animation call in the temporary set and reset of the current 3167 // cellLayout to its final transform -- this means we animate the drag view to 3168 // the correct final location. 3169 setFinalTransitionTransform(cellLayout); 3170 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 3171 exitSpringLoadedRunnable); 3172 resetTransitionTransform(cellLayout); 3173 } 3174 } 3175 } 3176 3177 public Bitmap createWidgetBitmap(ItemInfo widgetInfo, View layout) { 3178 int[] unScaledSize = mLauncher.getWorkspace().estimateItemSize(widgetInfo.spanX, 3179 widgetInfo.spanY, widgetInfo, false); 3180 int visibility = layout.getVisibility(); 3181 layout.setVisibility(VISIBLE); 3182 3183 int width = MeasureSpec.makeMeasureSpec(unScaledSize[0], MeasureSpec.EXACTLY); 3184 int height = MeasureSpec.makeMeasureSpec(unScaledSize[1], MeasureSpec.EXACTLY); 3185 Bitmap b = Bitmap.createBitmap(unScaledSize[0], unScaledSize[1], 3186 Bitmap.Config.ARGB_8888); 3187 Canvas c = new Canvas(b); 3188 3189 layout.measure(width, height); 3190 layout.layout(0, 0, unScaledSize[0], unScaledSize[1]); 3191 layout.draw(c); 3192 c.setBitmap(null); 3193 layout.setVisibility(visibility); 3194 return b; 3195 } 3196 3197 private void getFinalPositionForDropAnimation(int[] loc, float[] scaleXY, 3198 DragView dragView, CellLayout layout, ItemInfo info, int[] targetCell, 3199 boolean external, boolean scale) { 3200 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 3201 // location and size on the home screen. 3202 int spanX = info.spanX; 3203 int spanY = info.spanY; 3204 3205 Rect r = estimateItemPosition(layout, info, targetCell[0], targetCell[1], spanX, spanY); 3206 loc[0] = r.left; 3207 loc[1] = r.top; 3208 3209 setFinalTransitionTransform(layout); 3210 float cellLayoutScale = 3211 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(layout, loc); 3212 resetTransitionTransform(layout); 3213 3214 float dragViewScaleX; 3215 float dragViewScaleY; 3216 if (scale) { 3217 dragViewScaleX = (1.0f * r.width()) / dragView.getMeasuredWidth(); 3218 dragViewScaleY = (1.0f * r.height()) / dragView.getMeasuredHeight(); 3219 } else { 3220 dragViewScaleX = 1f; 3221 dragViewScaleY = 1f; 3222 } 3223 3224 // The animation will scale the dragView about its center, so we need to center about 3225 // the final location. 3226 loc[0] -= (dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 3227 loc[1] -= (dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 3228 3229 scaleXY[0] = dragViewScaleX * cellLayoutScale; 3230 scaleXY[1] = dragViewScaleY * cellLayoutScale; 3231 } 3232 3233 public void animateWidgetDrop(ItemInfo info, CellLayout cellLayout, DragView dragView, 3234 final Runnable onCompleteRunnable, int animationType, final View finalView, 3235 boolean external) { 3236 Rect from = new Rect(); 3237 mLauncher.getDragLayer().getViewRectRelativeToSelf(dragView, from); 3238 3239 int[] finalPos = new int[2]; 3240 float scaleXY[] = new float[2]; 3241 boolean scalePreview = !(info instanceof PendingAddShortcutInfo); 3242 getFinalPositionForDropAnimation(finalPos, scaleXY, dragView, cellLayout, info, mTargetCell, 3243 external, scalePreview); 3244 3245 Resources res = mLauncher.getResources(); 3246 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration) - 200; 3247 3248 // In the case where we've prebound the widget, we remove it from the DragLayer 3249 if (finalView instanceof AppWidgetHostView && external) { 3250 Log.d(TAG, "6557954 Animate widget drop, final view is appWidgetHostView"); 3251 mLauncher.getDragLayer().removeView(finalView); 3252 } 3253 if ((animationType == ANIMATE_INTO_POSITION_AND_RESIZE || external) && finalView != null) { 3254 Bitmap crossFadeBitmap = createWidgetBitmap(info, finalView); 3255 dragView.setCrossFadeBitmap(crossFadeBitmap); 3256 dragView.crossFade((int) (duration * 0.8f)); 3257 } else if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && external) { 3258 scaleXY[0] = scaleXY[1] = Math.min(scaleXY[0], scaleXY[1]); 3259 } 3260 3261 DragLayer dragLayer = mLauncher.getDragLayer(); 3262 if (animationType == CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION) { 3263 mLauncher.getDragLayer().animateViewIntoPosition(dragView, finalPos, 0f, 0.1f, 0.1f, 3264 DragLayer.ANIMATION_END_DISAPPEAR, onCompleteRunnable, duration); 3265 } else { 3266 int endStyle; 3267 if (animationType == ANIMATE_INTO_POSITION_AND_REMAIN) { 3268 endStyle = DragLayer.ANIMATION_END_REMAIN_VISIBLE; 3269 } else { 3270 endStyle = DragLayer.ANIMATION_END_DISAPPEAR;; 3271 } 3272 3273 Runnable onComplete = new Runnable() { 3274 @Override 3275 public void run() { 3276 if (finalView != null) { 3277 finalView.setVisibility(VISIBLE); 3278 } 3279 if (onCompleteRunnable != null) { 3280 onCompleteRunnable.run(); 3281 } 3282 } 3283 }; 3284 dragLayer.animateViewIntoPosition(dragView, from.left, from.top, finalPos[0], 3285 finalPos[1], 1, 1, 1, scaleXY[0], scaleXY[1], onComplete, endStyle, 3286 duration, this); 3287 } 3288 } 3289 3290 public void setFinalTransitionTransform(CellLayout layout) { 3291 if (isSwitchingState()) { 3292 int index = indexOfChild(layout); 3293 mCurrentScaleX = layout.getScaleX(); 3294 mCurrentScaleY = layout.getScaleY(); 3295 mCurrentTranslationX = layout.getTranslationX(); 3296 mCurrentTranslationY = layout.getTranslationY(); 3297 mCurrentRotationY = layout.getRotationY(); 3298 layout.setScaleX(mNewScaleXs[index]); 3299 layout.setScaleY(mNewScaleYs[index]); 3300 layout.setTranslationX(mNewTranslationXs[index]); 3301 layout.setTranslationY(mNewTranslationYs[index]); 3302 layout.setRotationY(mNewRotationYs[index]); 3303 } 3304 } 3305 public void resetTransitionTransform(CellLayout layout) { 3306 if (isSwitchingState()) { 3307 mCurrentScaleX = layout.getScaleX(); 3308 mCurrentScaleY = layout.getScaleY(); 3309 mCurrentTranslationX = layout.getTranslationX(); 3310 mCurrentTranslationY = layout.getTranslationY(); 3311 mCurrentRotationY = layout.getRotationY(); 3312 layout.setScaleX(mCurrentScaleX); 3313 layout.setScaleY(mCurrentScaleY); 3314 layout.setTranslationX(mCurrentTranslationX); 3315 layout.setTranslationY(mCurrentTranslationY); 3316 layout.setRotationY(mCurrentRotationY); 3317 } 3318 } 3319 3320 /** 3321 * Return the current {@link CellLayout}, correctly picking the destination 3322 * screen while a scroll is in progress. 3323 */ 3324 public CellLayout getCurrentDropLayout() { 3325 return (CellLayout) getChildAt(getNextPage()); 3326 } 3327 3328 /** 3329 * Return the current CellInfo describing our current drag; this method exists 3330 * so that Launcher can sync this object with the correct info when the activity is created/ 3331 * destroyed 3332 * 3333 */ 3334 public CellLayout.CellInfo getDragInfo() { 3335 return mDragInfo; 3336 } 3337 3338 /** 3339 * Calculate the nearest cell where the given object would be dropped. 3340 * 3341 * pixelX and pixelY should be in the coordinate system of layout 3342 */ 3343 private int[] findNearestArea(int pixelX, int pixelY, 3344 int spanX, int spanY, CellLayout layout, int[] recycle) { 3345 return layout.findNearestArea( 3346 pixelX, pixelY, spanX, spanY, recycle); 3347 } 3348 3349 void setup(DragController dragController) { 3350 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3351 mDragController = dragController; 3352 3353 // hardware layers on children are enabled on startup, but should be disabled until 3354 // needed 3355 updateChildrenLayersEnabled(false); 3356 setWallpaperDimension(); 3357 } 3358 3359 /** 3360 * Called at the end of a drag which originated on the workspace. 3361 */ 3362 public void onDropCompleted(View target, DragObject d, boolean isFlingToDelete, 3363 boolean success) { 3364 if (success) { 3365 if (target != this) { 3366 if (mDragInfo != null) { 3367 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 3368 if (mDragInfo.cell instanceof DropTarget) { 3369 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 3370 } 3371 } 3372 } 3373 } else if (mDragInfo != null) { 3374 CellLayout cellLayout; 3375 if (mLauncher.isHotseatLayout(target)) { 3376 cellLayout = mLauncher.getHotseat().getLayout(); 3377 } else { 3378 cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3379 } 3380 cellLayout.onDropChild(mDragInfo.cell); 3381 } 3382 if (d.cancelled && mDragInfo.cell != null) { 3383 mDragInfo.cell.setVisibility(VISIBLE); 3384 } 3385 mDragOutline = null; 3386 mDragInfo = null; 3387 3388 // Hide the scrolling indicator after you pick up an item 3389 hideScrollingIndicator(false); 3390 } 3391 3392 void updateItemLocationsInDatabase(CellLayout cl) { 3393 int count = cl.getShortcutsAndWidgets().getChildCount(); 3394 3395 int screen = indexOfChild(cl); 3396 int container = Favorites.CONTAINER_DESKTOP; 3397 3398 if (mLauncher.isHotseatLayout(cl)) { 3399 screen = -1; 3400 container = Favorites.CONTAINER_HOTSEAT; 3401 } 3402 3403 for (int i = 0; i < count; i++) { 3404 View v = cl.getShortcutsAndWidgets().getChildAt(i); 3405 ItemInfo info = (ItemInfo) v.getTag(); 3406 // Null check required as the AllApps button doesn't have an item info 3407 if (info != null && info.requiresDbUpdate) { 3408 info.requiresDbUpdate = false; 3409 LauncherModel.modifyItemInDatabase(mLauncher, info, container, screen, info.cellX, 3410 info.cellY, info.spanX, info.spanY); 3411 } 3412 } 3413 } 3414 3415 @Override 3416 public boolean supportsFlingToDelete() { 3417 return true; 3418 } 3419 3420 @Override 3421 public void onFlingToDelete(DragObject d, int x, int y, PointF vec) { 3422 // Do nothing 3423 } 3424 3425 @Override 3426 public void onFlingToDeleteCompleted() { 3427 // Do nothing 3428 } 3429 3430 public boolean isDropEnabled() { 3431 return true; 3432 } 3433 3434 @Override 3435 protected void onRestoreInstanceState(Parcelable state) { 3436 super.onRestoreInstanceState(state); 3437 Launcher.setScreen(mCurrentPage); 3438 } 3439 3440 @Override 3441 protected void dispatchRestoreInstanceState(SparseArray<Parcelable> container) { 3442 // We don't dispatch restoreInstanceState to our children using this code path. 3443 // Some pages will be restored immediately as their items are bound immediately, and 3444 // others we will need to wait until after their items are bound. 3445 mSavedStates = container; 3446 } 3447 3448 public void restoreInstanceStateForChild(int child) { 3449 if (mSavedStates != null) { 3450 mRestoredPages.add(child); 3451 CellLayout cl = (CellLayout) getChildAt(child); 3452 cl.restoreInstanceState(mSavedStates); 3453 } 3454 } 3455 3456 public void restoreInstanceStateForRemainingPages() { 3457 int count = getChildCount(); 3458 for (int i = 0; i < count; i++) { 3459 if (!mRestoredPages.contains(i)) { 3460 restoreInstanceStateForChild(i); 3461 } 3462 } 3463 mRestoredPages.clear(); 3464 } 3465 3466 @Override 3467 public void scrollLeft() { 3468 if (!isSmall() && !mIsSwitchingState) { 3469 super.scrollLeft(); 3470 } 3471 Folder openFolder = getOpenFolder(); 3472 if (openFolder != null) { 3473 openFolder.completeDragExit(); 3474 } 3475 } 3476 3477 @Override 3478 public void scrollRight() { 3479 if (!isSmall() && !mIsSwitchingState) { 3480 super.scrollRight(); 3481 } 3482 Folder openFolder = getOpenFolder(); 3483 if (openFolder != null) { 3484 openFolder.completeDragExit(); 3485 } 3486 } 3487 3488 @Override 3489 public boolean onEnterScrollArea(int x, int y, int direction) { 3490 // Ignore the scroll area if we are dragging over the hot seat 3491 boolean isPortrait = !LauncherApplication.isScreenLandscape(getContext()); 3492 if (mLauncher.getHotseat() != null && isPortrait) { 3493 Rect r = new Rect(); 3494 mLauncher.getHotseat().getHitRect(r); 3495 if (r.contains(x, y)) { 3496 return false; 3497 } 3498 } 3499 3500 boolean result = false; 3501 if (!isSmall() && !mIsSwitchingState) { 3502 mInScrollArea = true; 3503 3504 final int page = getNextPage() + 3505 (direction == DragController.SCROLL_LEFT ? -1 : 1); 3506 3507 // We always want to exit the current layout to ensure parity of enter / exit 3508 setCurrentDropLayout(null); 3509 3510 if (0 <= page && page < getChildCount()) { 3511 CellLayout layout = (CellLayout) getChildAt(page); 3512 setCurrentDragOverlappingLayout(layout); 3513 3514 // Workspace is responsible for drawing the edge glow on adjacent pages, 3515 // so we need to redraw the workspace when this may have changed. 3516 invalidate(); 3517 result = true; 3518 } 3519 } 3520 return result; 3521 } 3522 3523 @Override 3524 public boolean onExitScrollArea() { 3525 boolean result = false; 3526 if (mInScrollArea) { 3527 invalidate(); 3528 CellLayout layout = getCurrentDropLayout(); 3529 setCurrentDropLayout(layout); 3530 setCurrentDragOverlappingLayout(layout); 3531 3532 result = true; 3533 mInScrollArea = false; 3534 } 3535 return result; 3536 } 3537 3538 private void onResetScrollArea() { 3539 setCurrentDragOverlappingLayout(null); 3540 mInScrollArea = false; 3541 } 3542 3543 /** 3544 * Returns a specific CellLayout 3545 */ 3546 CellLayout getParentCellLayoutForView(View v) { 3547 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3548 for (CellLayout layout : layouts) { 3549 if (layout.getShortcutsAndWidgets().indexOfChild(v) > -1) { 3550 return layout; 3551 } 3552 } 3553 return null; 3554 } 3555 3556 /** 3557 * Returns a list of all the CellLayouts in the workspace. 3558 */ 3559 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3560 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3561 int screenCount = getChildCount(); 3562 for (int screen = 0; screen < screenCount; screen++) { 3563 layouts.add(((CellLayout) getChildAt(screen))); 3564 } 3565 if (mLauncher.getHotseat() != null) { 3566 layouts.add(mLauncher.getHotseat().getLayout()); 3567 } 3568 return layouts; 3569 } 3570 3571 /** 3572 * We should only use this to search for specific children. Do not use this method to modify 3573 * ShortcutsAndWidgetsContainer directly. Includes ShortcutAndWidgetContainers from 3574 * the hotseat and workspace pages 3575 */ 3576 ArrayList<ShortcutAndWidgetContainer> getAllShortcutAndWidgetContainers() { 3577 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3578 new ArrayList<ShortcutAndWidgetContainer>(); 3579 int screenCount = getChildCount(); 3580 for (int screen = 0; screen < screenCount; screen++) { 3581 childrenLayouts.add(((CellLayout) getChildAt(screen)).getShortcutsAndWidgets()); 3582 } 3583 if (mLauncher.getHotseat() != null) { 3584 childrenLayouts.add(mLauncher.getHotseat().getLayout().getShortcutsAndWidgets()); 3585 } 3586 return childrenLayouts; 3587 } 3588 3589 public Folder getFolderForTag(Object tag) { 3590 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3591 getAllShortcutAndWidgetContainers(); 3592 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3593 int count = layout.getChildCount(); 3594 for (int i = 0; i < count; i++) { 3595 View child = layout.getChildAt(i); 3596 if (child instanceof Folder) { 3597 Folder f = (Folder) child; 3598 if (f.getInfo() == tag && f.getInfo().opened) { 3599 return f; 3600 } 3601 } 3602 } 3603 } 3604 return null; 3605 } 3606 3607 public View getViewForTag(Object tag) { 3608 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3609 getAllShortcutAndWidgetContainers(); 3610 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3611 int count = layout.getChildCount(); 3612 for (int i = 0; i < count; i++) { 3613 View child = layout.getChildAt(i); 3614 if (child.getTag() == tag) { 3615 return child; 3616 } 3617 } 3618 } 3619 return null; 3620 } 3621 3622 void clearDropTargets() { 3623 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3624 getAllShortcutAndWidgetContainers(); 3625 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3626 int childCount = layout.getChildCount(); 3627 for (int j = 0; j < childCount; j++) { 3628 View v = layout.getChildAt(j); 3629 if (v instanceof DropTarget) { 3630 mDragController.removeDropTarget((DropTarget) v); 3631 } 3632 } 3633 } 3634 } 3635 3636 void removeItems(final ArrayList<String> packages) { 3637 final HashSet<String> packageNames = new HashSet<String>(); 3638 packageNames.addAll(packages); 3639 3640 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3641 for (final CellLayout layoutParent: cellLayouts) { 3642 final ViewGroup layout = layoutParent.getShortcutsAndWidgets(); 3643 3644 // Avoid ANRs by treating each screen separately 3645 post(new Runnable() { 3646 public void run() { 3647 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3648 childrenToRemove.clear(); 3649 3650 int childCount = layout.getChildCount(); 3651 for (int j = 0; j < childCount; j++) { 3652 final View view = layout.getChildAt(j); 3653 Object tag = view.getTag(); 3654 3655 if (tag instanceof ShortcutInfo) { 3656 final ShortcutInfo info = (ShortcutInfo) tag; 3657 final Intent intent = info.intent; 3658 final ComponentName name = intent.getComponent(); 3659 3660 if (name != null) { 3661 if (packageNames.contains(name.getPackageName())) { 3662 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3663 childrenToRemove.add(view); 3664 } 3665 } 3666 } else if (tag instanceof FolderInfo) { 3667 final FolderInfo info = (FolderInfo) tag; 3668 final ArrayList<ShortcutInfo> contents = info.contents; 3669 final int contentsCount = contents.size(); 3670 final ArrayList<ShortcutInfo> appsToRemoveFromFolder = 3671 new ArrayList<ShortcutInfo>(); 3672 3673 for (int k = 0; k < contentsCount; k++) { 3674 final ShortcutInfo appInfo = contents.get(k); 3675 final Intent intent = appInfo.intent; 3676 final ComponentName name = intent.getComponent(); 3677 3678 if (name != null) { 3679 if (packageNames.contains(name.getPackageName())) { 3680 appsToRemoveFromFolder.add(appInfo); 3681 } 3682 } 3683 } 3684 for (ShortcutInfo item: appsToRemoveFromFolder) { 3685 info.remove(item); 3686 LauncherModel.deleteItemFromDatabase(mLauncher, item); 3687 } 3688 } else if (tag instanceof LauncherAppWidgetInfo) { 3689 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3690 final ComponentName provider = info.providerName; 3691 if (provider != null) { 3692 if (packageNames.contains(provider.getPackageName())) { 3693 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3694 childrenToRemove.add(view); 3695 } 3696 } 3697 } 3698 } 3699 3700 childCount = childrenToRemove.size(); 3701 for (int j = 0; j < childCount; j++) { 3702 View child = childrenToRemove.get(j); 3703 // Note: We can not remove the view directly from CellLayoutChildren as this 3704 // does not re-mark the spaces as unoccupied. 3705 layoutParent.removeViewInLayout(child); 3706 if (child instanceof DropTarget) { 3707 mDragController.removeDropTarget((DropTarget)child); 3708 } 3709 } 3710 3711 if (childCount > 0) { 3712 layout.requestLayout(); 3713 layout.invalidate(); 3714 } 3715 } 3716 }); 3717 } 3718 3719 // Clean up new-apps animation list 3720 final Context context = getContext(); 3721 post(new Runnable() { 3722 @Override 3723 public void run() { 3724 String spKey = LauncherApplication.getSharedPreferencesKey(); 3725 SharedPreferences sp = context.getSharedPreferences(spKey, 3726 Context.MODE_PRIVATE); 3727 Set<String> newApps = sp.getStringSet(InstallShortcutReceiver.NEW_APPS_LIST_KEY, 3728 null); 3729 3730 // Remove all queued items that match the same package 3731 if (newApps != null) { 3732 synchronized (newApps) { 3733 Iterator<String> iter = newApps.iterator(); 3734 while (iter.hasNext()) { 3735 try { 3736 Intent intent = Intent.parseUri(iter.next(), 0); 3737 String pn = ItemInfo.getPackageName(intent); 3738 if (packageNames.contains(pn)) { 3739 iter.remove(); 3740 } 3741 3742 // It is possible that we've queued an item to be loaded, yet it has 3743 // not been added to the workspace, so remove those items as well. 3744 ArrayList<ItemInfo> shortcuts; 3745 shortcuts = LauncherModel.getWorkspaceShortcutItemInfosWithIntent( 3746 intent); 3747 for (ItemInfo info : shortcuts) { 3748 LauncherModel.deleteItemFromDatabase(context, info); 3749 } 3750 } catch (URISyntaxException e) {} 3751 } 3752 } 3753 } 3754 } 3755 }); 3756 } 3757 3758 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3759 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = getAllShortcutAndWidgetContainers(); 3760 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3761 int childCount = layout.getChildCount(); 3762 for (int j = 0; j < childCount; j++) { 3763 final View view = layout.getChildAt(j); 3764 Object tag = view.getTag(); 3765 if (tag instanceof ShortcutInfo) { 3766 ShortcutInfo info = (ShortcutInfo) tag; 3767 // We need to check for ACTION_MAIN otherwise getComponent() might 3768 // return null for some shortcuts (for instance, for shortcuts to 3769 // web pages.) 3770 final Intent intent = info.intent; 3771 final ComponentName name = intent.getComponent(); 3772 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3773 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3774 final int appCount = apps.size(); 3775 for (int k = 0; k < appCount; k++) { 3776 ApplicationInfo app = apps.get(k); 3777 if (app.componentName.equals(name)) { 3778 BubbleTextView shortcut = (BubbleTextView) view; 3779 info.updateIcon(mIconCache); 3780 info.title = app.title.toString(); 3781 shortcut.applyFromShortcutInfo(info, mIconCache); 3782 } 3783 } 3784 } 3785 } 3786 } 3787 } 3788 } 3789 3790 void moveToDefaultScreen(boolean animate) { 3791 if (!isSmall()) { 3792 if (animate) { 3793 snapToPage(mDefaultPage); 3794 } else { 3795 setCurrentPage(mDefaultPage); 3796 } 3797 } 3798 getChildAt(mDefaultPage).requestFocus(); 3799 } 3800 3801 @Override 3802 public void syncPages() { 3803 } 3804 3805 @Override 3806 public void syncPageItems(int page, boolean immediate) { 3807 } 3808 3809 @Override 3810 protected String getCurrentPageDescription() { 3811 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 3812 return String.format(getContext().getString(R.string.workspace_scroll_format), 3813 page + 1, getChildCount()); 3814 } 3815 3816 public void getLocationInDragLayer(int[] loc) { 3817 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 3818 } 3819 3820 void setFadeForOverScroll(float fade) { 3821 if (!isScrollingIndicatorEnabled()) return; 3822 3823 mOverscrollFade = fade; 3824 float reducedFade = 0.5f + 0.5f * (1 - fade); 3825 final ViewGroup parent = (ViewGroup) getParent(); 3826 final ImageView qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3827 final ImageView dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3828 final View scrollIndicator = getScrollingIndicator(); 3829 3830 cancelScrollingIndicatorAnimations(); 3831 if (qsbDivider != null) qsbDivider.setAlpha(reducedFade); 3832 if (dockDivider != null) dockDivider.setAlpha(reducedFade); 3833 scrollIndicator.setAlpha(1 - fade); 3834 } 3835 } 3836