Workspace.java revision b8b2a5aa45d82ce81301250707bc373e1da4aa14
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.launcher2; 18 19import android.animation.Animator; 20import android.animation.AnimatorSet; 21import android.animation.ObjectAnimator; 22import android.animation.TimeInterpolator; 23import android.animation.ValueAnimator; 24import android.animation.ValueAnimator.AnimatorUpdateListener; 25import android.app.WallpaperManager; 26import android.appwidget.AppWidgetHostView; 27import android.appwidget.AppWidgetProviderInfo; 28import android.content.ComponentName; 29import android.content.Context; 30import android.content.Intent; 31import android.content.SharedPreferences; 32import android.content.res.Resources; 33import android.content.res.TypedArray; 34import android.graphics.Bitmap; 35import android.graphics.Canvas; 36import android.graphics.Matrix; 37import android.graphics.Point; 38import android.graphics.PointF; 39import android.graphics.Rect; 40import android.graphics.Region.Op; 41import android.graphics.drawable.Drawable; 42import android.os.IBinder; 43import android.os.Parcelable; 44import android.util.AttributeSet; 45import android.util.Log; 46import android.view.Display; 47import android.view.MotionEvent; 48import android.view.View; 49import android.view.ViewGroup; 50import android.view.animation.DecelerateInterpolator; 51import android.widget.ImageView; 52import android.widget.TextView; 53 54import com.android.launcher.R; 55import com.android.launcher2.FolderIcon.FolderRingAnimator; 56import com.android.launcher2.LauncherSettings.Favorites; 57 58import java.net.URISyntaxException; 59import java.util.ArrayList; 60import java.util.HashSet; 61import java.util.Iterator; 62import java.util.Set; 63 64/** 65 * The workspace is a wide area with a wallpaper and a finite number of pages. 66 * Each page contains a number of icons, folders or widgets the user can 67 * interact with. A workspace is meant to be used with a fixed width only. 68 */ 69public class Workspace extends SmoothPagedView 70 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 71 DragController.DragListener, LauncherTransitionable, ViewGroup.OnHierarchyChangeListener { 72 private static final String TAG = "Launcher.Workspace"; 73 74 // Y rotation to apply to the workspace screens 75 private static final float WORKSPACE_OVERSCROLL_ROTATION = 24f; 76 77 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 78 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 79 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 80 81 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 82 private static final int ADJACENT_SCREEN_DROP_DURATION = 300; 83 private static final int FLING_THRESHOLD_VELOCITY = 500; 84 85 // These animators are used to fade the children's outlines 86 private ObjectAnimator mChildrenOutlineFadeInAnimation; 87 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 88 private float mChildrenOutlineAlpha = 0; 89 90 // These properties refer to the background protection gradient used for AllApps and Customize 91 private ValueAnimator mBackgroundFadeInAnimation; 92 private ValueAnimator mBackgroundFadeOutAnimation; 93 private Drawable mBackground; 94 boolean mDrawBackground = true; 95 private float mBackgroundAlpha = 0; 96 private float mOverScrollMaxBackgroundAlpha = 0.0f; 97 98 private float mWallpaperScrollRatio = 1.0f; 99 100 private final WallpaperManager mWallpaperManager; 101 private IBinder mWindowToken; 102 private static final float WALLPAPER_SCREENS_SPAN = 2f; 103 104 private int mDefaultPage; 105 106 /** 107 * CellInfo for the cell that is currently being dragged 108 */ 109 private CellLayout.CellInfo mDragInfo; 110 111 /** 112 * Target drop area calculated during last acceptDrop call. 113 */ 114 private int[] mTargetCell = new int[2]; 115 private int mDragOverX = -1; 116 private int mDragOverY = -1; 117 118 static Rect mLandscapeCellLayoutMetrics = null; 119 static Rect mPortraitCellLayoutMetrics = null; 120 121 /** 122 * The CellLayout that is currently being dragged over 123 */ 124 private CellLayout mDragTargetLayout = null; 125 /** 126 * The CellLayout that we will show as glowing 127 */ 128 private CellLayout mDragOverlappingLayout = null; 129 130 /** 131 * The CellLayout which will be dropped to 132 */ 133 private CellLayout mDropToLayout = null; 134 135 private Launcher mLauncher; 136 private IconCache mIconCache; 137 private DragController mDragController; 138 139 // These are temporary variables to prevent having to allocate a new object just to 140 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 141 private int[] mTempCell = new int[2]; 142 private int[] mTempEstimate = new int[2]; 143 private float[] mDragViewVisualCenter = new float[2]; 144 private float[] mTempDragCoordinates = new float[2]; 145 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 146 private float[] mTempDragBottomRightCoordinates = new float[2]; 147 private Matrix mTempInverseMatrix = new Matrix(); 148 149 private SpringLoadedDragController mSpringLoadedDragController; 150 private float mSpringLoadedShrinkFactor; 151 152 private static final int DEFAULT_CELL_COUNT_X = 4; 153 private static final int DEFAULT_CELL_COUNT_Y = 4; 154 155 // State variable that indicates whether the pages are small (ie when you're 156 // in all apps or customize mode) 157 158 enum State { NORMAL, SPRING_LOADED, SMALL }; 159 private State mState = State.NORMAL; 160 private boolean mIsSwitchingState = false; 161 162 boolean mAnimatingViewIntoPlace = false; 163 boolean mIsDragOccuring = false; 164 boolean mChildrenLayersEnabled = true; 165 166 /** Is the user is dragging an item near the edge of a page? */ 167 private boolean mInScrollArea = false; 168 169 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 170 private Bitmap mDragOutline = null; 171 private final Rect mTempRect = new Rect(); 172 private final int[] mTempXY = new int[2]; 173 private int[] mTempVisiblePagesRange = new int[2]; 174 private float mOverscrollFade = 0; 175 private boolean mOverscrollTransformsSet; 176 public static final int DRAG_BITMAP_PADDING = 2; 177 private boolean mWorkspaceFadeInAdjacentScreens; 178 179 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 180 int mWallpaperWidth; 181 int mWallpaperHeight; 182 WallpaperOffsetInterpolator mWallpaperOffset; 183 boolean mUpdateWallpaperOffsetImmediately = false; 184 private Runnable mDelayedResizeRunnable; 185 private Runnable mDelayedSnapToPageRunnable; 186 private Point mDisplaySize = new Point(); 187 private boolean mIsStaticWallpaper; 188 private int mWallpaperTravelWidth; 189 private int mSpringLoadedPageSpacing; 190 private int mCameraDistance; 191 192 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 193 private static final int FOLDER_CREATION_TIMEOUT = 0; 194 private static final int REORDER_TIMEOUT = 250; 195 private final Alarm mFolderCreationAlarm = new Alarm(); 196 private final Alarm mReorderAlarm = new Alarm(); 197 private FolderRingAnimator mDragFolderRingAnimator = null; 198 private FolderIcon mDragOverFolderIcon = null; 199 private boolean mCreateUserFolderOnDrop = false; 200 private boolean mAddToExistingFolderOnDrop = false; 201 private DropTarget.DragEnforcer mDragEnforcer; 202 private float mMaxDistanceForFolderCreation; 203 204 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 205 private float mXDown; 206 private float mYDown; 207 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 208 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 209 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 210 211 // Relating to the animation of items being dropped externally 212 public static final int ANIMATE_INTO_POSITION_AND_DISAPPEAR = 0; 213 public static final int ANIMATE_INTO_POSITION_AND_REMAIN = 1; 214 public static final int ANIMATE_INTO_POSITION_AND_RESIZE = 2; 215 public static final int COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION = 3; 216 public static final int CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION = 4; 217 218 // Related to dragging, folder creation and reordering 219 private static final int DRAG_MODE_NONE = 0; 220 private static final int DRAG_MODE_CREATE_FOLDER = 1; 221 private static final int DRAG_MODE_ADD_TO_FOLDER = 2; 222 private static final int DRAG_MODE_REORDER = 3; 223 private int mDragMode = DRAG_MODE_NONE; 224 private int mLastReorderX = -1; 225 private int mLastReorderY = -1; 226 227 // These variables are used for storing the initial and final values during workspace animations 228 private int mSavedScrollX; 229 private float mSavedRotationY; 230 private float mSavedTranslationX; 231 private float mCurrentScaleX; 232 private float mCurrentScaleY; 233 private float mCurrentRotationY; 234 private float mCurrentTranslationX; 235 private float mCurrentTranslationY; 236 private float[] mOldTranslationXs; 237 private float[] mOldTranslationYs; 238 private float[] mOldScaleXs; 239 private float[] mOldScaleYs; 240 private float[] mOldBackgroundAlphas; 241 private float[] mOldAlphas; 242 private float[] mNewTranslationXs; 243 private float[] mNewTranslationYs; 244 private float[] mNewScaleXs; 245 private float[] mNewScaleYs; 246 private float[] mNewBackgroundAlphas; 247 private float[] mNewAlphas; 248 private float[] mNewRotationYs; 249 private float mTransitionProgress; 250 251 /** 252 * Used to inflate the Workspace from XML. 253 * 254 * @param context The application's context. 255 * @param attrs The attributes set containing the Workspace's customization values. 256 */ 257 public Workspace(Context context, AttributeSet attrs) { 258 this(context, attrs, 0); 259 } 260 261 /** 262 * Used to inflate the Workspace from XML. 263 * 264 * @param context The application's context. 265 * @param attrs The attributes set containing the Workspace's customization values. 266 * @param defStyle Unused. 267 */ 268 public Workspace(Context context, AttributeSet attrs, int defStyle) { 269 super(context, attrs, defStyle); 270 mContentIsRefreshable = false; 271 272 mDragEnforcer = new DropTarget.DragEnforcer(context); 273 // With workspace, data is available straight from the get-go 274 setDataIsReady(); 275 276 mLauncher = (Launcher) context; 277 final Resources res = getResources(); 278 mWorkspaceFadeInAdjacentScreens = res.getBoolean(R.bool.config_workspaceFadeAdjacentScreens); 279 mFadeInAdjacentScreens = false; 280 mWallpaperManager = WallpaperManager.getInstance(context); 281 282 int cellCountX = DEFAULT_CELL_COUNT_X; 283 int cellCountY = DEFAULT_CELL_COUNT_Y; 284 285 TypedArray a = context.obtainStyledAttributes(attrs, 286 R.styleable.Workspace, defStyle, 0); 287 288 if (LauncherApplication.isScreenLarge()) { 289 // Determine number of rows/columns dynamically 290 // TODO: This code currently fails on tablets with an aspect ratio < 1.3. 291 // Around that ratio we should make cells the same size in portrait and 292 // landscape 293 TypedArray actionBarSizeTypedArray = 294 context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize }); 295 final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); 296 297 Point minDims = new Point(); 298 Point maxDims = new Point(); 299 mLauncher.getWindowManager().getDefaultDisplay().getCurrentSizeRange(minDims, maxDims); 300 301 cellCountX = 1; 302 while (CellLayout.widthInPortrait(res, cellCountX + 1) <= minDims.x) { 303 cellCountX++; 304 } 305 306 cellCountY = 1; 307 while (actionBarHeight + CellLayout.heightInLandscape(res, cellCountY + 1) 308 <= minDims.y) { 309 cellCountY++; 310 } 311 } 312 313 mSpringLoadedShrinkFactor = 314 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 315 mSpringLoadedPageSpacing = 316 res.getDimensionPixelSize(R.dimen.workspace_spring_loaded_page_spacing); 317 mCameraDistance = res.getInteger(R.integer.config_cameraDistance); 318 319 // if the value is manually specified, use that instead 320 cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX); 321 cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY); 322 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 323 a.recycle(); 324 325 setOnHierarchyChangeListener(this); 326 327 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 328 setHapticFeedbackEnabled(false); 329 330 initWorkspace(); 331 332 // Disable multitouch across the workspace/all apps/customize tray 333 setMotionEventSplittingEnabled(true); 334 335 // Unless otherwise specified this view is important for accessibility. 336 if (getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 337 setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 338 } 339 } 340 341 // estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each 342 // dimension if unsuccessful 343 public int[] estimateItemSize(int hSpan, int vSpan, 344 ItemInfo itemInfo, boolean springLoaded) { 345 int[] size = new int[2]; 346 if (getChildCount() > 0) { 347 CellLayout cl = (CellLayout) mLauncher.getWorkspace().getChildAt(0); 348 Rect r = estimateItemPosition(cl, itemInfo, 0, 0, hSpan, vSpan); 349 size[0] = r.width(); 350 size[1] = r.height(); 351 if (springLoaded) { 352 size[0] *= mSpringLoadedShrinkFactor; 353 size[1] *= mSpringLoadedShrinkFactor; 354 } 355 return size; 356 } else { 357 size[0] = Integer.MAX_VALUE; 358 size[1] = Integer.MAX_VALUE; 359 return size; 360 } 361 } 362 public Rect estimateItemPosition(CellLayout cl, ItemInfo pendingInfo, 363 int hCell, int vCell, int hSpan, int vSpan) { 364 Rect r = new Rect(); 365 cl.cellToRect(hCell, vCell, hSpan, vSpan, r); 366 return r; 367 } 368 369 public void onDragStart(DragSource source, Object info, int dragAction) { 370 mIsDragOccuring = true; 371 updateChildrenLayersEnabled(false); 372 mLauncher.lockScreenOrientation(); 373 setChildrenBackgroundAlphaMultipliers(1f); 374 // Prevent any Un/InstallShortcutReceivers from updating the db while we are dragging 375 InstallShortcutReceiver.enableInstallQueue(); 376 UninstallShortcutReceiver.enableUninstallQueue(); 377 } 378 379 public void onDragEnd() { 380 mIsDragOccuring = false; 381 updateChildrenLayersEnabled(false); 382 mLauncher.unlockScreenOrientation(false); 383 384 // Re-enable any Un/InstallShortcutReceiver and now process any queued items 385 InstallShortcutReceiver.disableAndFlushInstallQueue(getContext()); 386 UninstallShortcutReceiver.disableAndFlushUninstallQueue(getContext()); 387 } 388 389 /** 390 * Initializes various states for this workspace. 391 */ 392 protected void initWorkspace() { 393 Context context = getContext(); 394 mCurrentPage = mDefaultPage; 395 Launcher.setScreen(mCurrentPage); 396 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 397 mIconCache = app.getIconCache(); 398 setWillNotDraw(false); 399 setChildrenDrawnWithCacheEnabled(true); 400 401 final Resources res = getResources(); 402 try { 403 mBackground = res.getDrawable(R.drawable.apps_customize_bg); 404 } catch (Resources.NotFoundException e) { 405 // In this case, we will skip drawing background protection 406 } 407 408 mWallpaperOffset = new WallpaperOffsetInterpolator(); 409 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 410 display.getSize(mDisplaySize); 411 mWallpaperTravelWidth = (int) (mDisplaySize.x * 412 wallpaperTravelToScreenWidthRatio(mDisplaySize.x, mDisplaySize.y)); 413 414 mMaxDistanceForFolderCreation = (0.55f * res.getDimensionPixelSize(R.dimen.app_icon_size)); 415 mFlingThresholdVelocity = (int) (FLING_THRESHOLD_VELOCITY * mDensity); 416 } 417 418 @Override 419 protected int getScrollMode() { 420 return SmoothPagedView.X_LARGE_MODE; 421 } 422 423 @Override 424 public void onChildViewAdded(View parent, View child) { 425 if (!(child instanceof CellLayout)) { 426 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 427 } 428 CellLayout cl = ((CellLayout) child); 429 cl.setOnInterceptTouchListener(this); 430 cl.setClickable(true); 431 cl.setContentDescription(getContext().getString( 432 R.string.workspace_description_format, getChildCount())); 433 } 434 435 @Override 436 public void onChildViewRemoved(View parent, View child) { 437 } 438 439 protected boolean shouldDrawChild(View child) { 440 final CellLayout cl = (CellLayout) child; 441 return super.shouldDrawChild(child) && 442 (cl.getShortcutsAndWidgets().getAlpha() > 0 || 443 cl.getBackgroundAlpha() > 0); 444 } 445 446 /** 447 * @return The open folder on the current screen, or null if there is none 448 */ 449 Folder getOpenFolder() { 450 DragLayer dragLayer = mLauncher.getDragLayer(); 451 int count = dragLayer.getChildCount(); 452 for (int i = 0; i < count; i++) { 453 View child = dragLayer.getChildAt(i); 454 if (child instanceof Folder) { 455 Folder folder = (Folder) child; 456 if (folder.getInfo().opened) 457 return folder; 458 } 459 } 460 return null; 461 } 462 463 boolean isTouchActive() { 464 return mTouchState != TOUCH_STATE_REST; 465 } 466 467 /** 468 * Adds the specified child in the specified screen. The position and dimension of 469 * the child are defined by x, y, spanX and spanY. 470 * 471 * @param child The child to add in one of the workspace's screens. 472 * @param screen The screen in which to add the child. 473 * @param x The X position of the child in the screen's grid. 474 * @param y The Y position of the child in the screen's grid. 475 * @param spanX The number of cells spanned horizontally by the child. 476 * @param spanY The number of cells spanned vertically by the child. 477 */ 478 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY) { 479 addInScreen(child, container, screen, x, y, spanX, spanY, false); 480 } 481 482 /** 483 * Adds the specified child in the specified screen. The position and dimension of 484 * the child are defined by x, y, spanX and spanY. 485 * 486 * @param child The child to add in one of the workspace's screens. 487 * @param screen The screen in which to add the child. 488 * @param x The X position of the child in the screen's grid. 489 * @param y The Y position of the child in the screen's grid. 490 * @param spanX The number of cells spanned horizontally by the child. 491 * @param spanY The number of cells spanned vertically by the child. 492 * @param insert When true, the child is inserted at the beginning of the children list. 493 */ 494 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY, 495 boolean insert) { 496 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 497 if (screen < 0 || screen >= getChildCount()) { 498 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 499 + " (was " + screen + "); skipping child"); 500 return; 501 } 502 } 503 504 final CellLayout layout; 505 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 506 layout = mLauncher.getHotseat().getLayout(); 507 child.setOnKeyListener(null); 508 509 // Hide folder title in the hotseat 510 if (child instanceof FolderIcon) { 511 ((FolderIcon) child).setTextVisible(false); 512 } 513 514 if (screen < 0) { 515 screen = mLauncher.getHotseat().getOrderInHotseat(x, y); 516 } else { 517 // Note: We do this to ensure that the hotseat is always laid out in the orientation 518 // of the hotseat in order regardless of which orientation they were added 519 x = mLauncher.getHotseat().getCellXFromOrder(screen); 520 y = mLauncher.getHotseat().getCellYFromOrder(screen); 521 } 522 } else { 523 // Show folder title if not in the hotseat 524 if (child instanceof FolderIcon) { 525 ((FolderIcon) child).setTextVisible(true); 526 } 527 528 layout = (CellLayout) getChildAt(screen); 529 child.setOnKeyListener(new IconKeyEventListener()); 530 } 531 532 LayoutParams genericLp = child.getLayoutParams(); 533 CellLayout.LayoutParams lp; 534 if (genericLp == null || !(genericLp instanceof CellLayout.LayoutParams)) { 535 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 536 } else { 537 lp = (CellLayout.LayoutParams) genericLp; 538 lp.cellX = x; 539 lp.cellY = y; 540 lp.cellHSpan = spanX; 541 lp.cellVSpan = spanY; 542 } 543 544 if (spanX < 0 && spanY < 0) { 545 lp.isLockedToGrid = false; 546 } 547 548 // Get the canonical child id to uniquely represent this view in this screen 549 int childId = LauncherModel.getCellLayoutChildId(container, screen, x, y, spanX, spanY); 550 boolean markCellsAsOccupied = !(child instanceof Folder); 551 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 552 // TODO: This branch occurs when the workspace is adding views 553 // outside of the defined grid 554 // maybe we should be deleting these items from the LauncherModel? 555 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 556 } 557 558 if (!(child instanceof Folder)) { 559 child.setHapticFeedbackEnabled(false); 560 child.setOnLongClickListener(mLongClickListener); 561 } 562 if (child instanceof DropTarget) { 563 mDragController.addDropTarget((DropTarget) child); 564 } 565 } 566 567 /** 568 * Check if the point (x, y) hits a given page. 569 */ 570 private boolean hitsPage(int index, float x, float y) { 571 final View page = getChildAt(index); 572 if (page != null) { 573 float[] localXY = { x, y }; 574 mapPointFromSelfToChild(page, localXY); 575 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 576 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 577 } 578 return false; 579 } 580 581 @Override 582 protected boolean hitsPreviousPage(float x, float y) { 583 // mNextPage is set to INVALID_PAGE whenever we are stationary. 584 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 585 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 586 587 // Only allow tap to next page on large devices, where there's significant margin outside 588 // the active workspace 589 return LauncherApplication.isScreenLarge() && hitsPage(current - 1, x, y); 590 } 591 592 @Override 593 protected boolean hitsNextPage(float x, float y) { 594 // mNextPage is set to INVALID_PAGE whenever we are stationary. 595 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 596 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 597 598 // Only allow tap to next page on large devices, where there's significant margin outside 599 // the active workspace 600 return LauncherApplication.isScreenLarge() && hitsPage(current + 1, x, y); 601 } 602 603 /** 604 * Called directly from a CellLayout (not by the framework), after we've been added as a 605 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 606 * that it should intercept touch events, which is not something that is normally supported. 607 */ 608 @Override 609 public boolean onTouch(View v, MotionEvent event) { 610 return (isSmall() || !isFinishedSwitchingState()); 611 } 612 613 public boolean isSwitchingState() { 614 return mIsSwitchingState; 615 } 616 617 /** This differs from isSwitchingState in that we take into account how far the transition 618 * has completed. */ 619 public boolean isFinishedSwitchingState() { 620 return !mIsSwitchingState || (mTransitionProgress > 0.5f); 621 } 622 623 protected void onWindowVisibilityChanged (int visibility) { 624 mLauncher.onWindowVisibilityChanged(visibility); 625 } 626 627 @Override 628 public boolean dispatchUnhandledMove(View focused, int direction) { 629 if (isSmall() || !isFinishedSwitchingState()) { 630 // when the home screens are shrunken, shouldn't allow side-scrolling 631 return false; 632 } 633 return super.dispatchUnhandledMove(focused, direction); 634 } 635 636 @Override 637 public boolean onInterceptTouchEvent(MotionEvent ev) { 638 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 639 case MotionEvent.ACTION_DOWN: 640 mXDown = ev.getX(); 641 mYDown = ev.getY(); 642 break; 643 case MotionEvent.ACTION_POINTER_UP: 644 case MotionEvent.ACTION_UP: 645 if (mTouchState == TOUCH_STATE_REST) { 646 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 647 if (!currentPage.lastDownOnOccupiedCell()) { 648 onWallpaperTap(ev); 649 } 650 } 651 } 652 return super.onInterceptTouchEvent(ev); 653 } 654 655 protected void reinflateWidgetsIfNecessary() { 656 final int clCount = getChildCount(); 657 for (int i = 0; i < clCount; i++) { 658 CellLayout cl = (CellLayout) getChildAt(i); 659 ShortcutAndWidgetContainer swc = cl.getShortcutsAndWidgets(); 660 final int itemCount = swc.getChildCount(); 661 for (int j = 0; j < itemCount; j++) { 662 View v = swc.getChildAt(j); 663 664 if (v.getTag() instanceof LauncherAppWidgetInfo) { 665 LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) v.getTag(); 666 LauncherAppWidgetHostView lahv = (LauncherAppWidgetHostView) info.hostView; 667 if (lahv != null && lahv.orientationChangedSincedInflation()) { 668 mLauncher.removeAppWidget(info); 669 // Remove the current widget which is inflated with the wrong orientation 670 cl.removeView(lahv); 671 mLauncher.bindAppWidget(info); 672 } 673 } 674 } 675 } 676 } 677 678 @Override 679 protected void determineScrollingStart(MotionEvent ev) { 680 if (isSmall()) return; 681 if (!isFinishedSwitchingState()) return; 682 683 float deltaX = Math.abs(ev.getX() - mXDown); 684 float deltaY = Math.abs(ev.getY() - mYDown); 685 686 if (Float.compare(deltaX, 0f) == 0) return; 687 688 float slope = deltaY / deltaX; 689 float theta = (float) Math.atan(slope); 690 691 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 692 cancelCurrentPageLongPress(); 693 } 694 695 if (theta > MAX_SWIPE_ANGLE) { 696 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 697 return; 698 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 699 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 700 // increase the touch slop to make it harder to begin scrolling the workspace. This 701 // results in vertically scrolling widgets to more easily. The higher the angle, the 702 // more we increase touch slop. 703 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 704 float extraRatio = (float) 705 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 706 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 707 } else { 708 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 709 super.determineScrollingStart(ev); 710 } 711 } 712 713 protected void onPageBeginMoving() { 714 super.onPageBeginMoving(); 715 716 if (isHardwareAccelerated()) { 717 updateChildrenLayersEnabled(false); 718 } else { 719 if (mNextPage != INVALID_PAGE) { 720 // we're snapping to a particular screen 721 enableChildrenCache(mCurrentPage, mNextPage); 722 } else { 723 // this is when user is actively dragging a particular screen, they might 724 // swipe it either left or right (but we won't advance by more than one screen) 725 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 726 } 727 } 728 729 // Only show page outlines as we pan if we are on large screen 730 if (LauncherApplication.isScreenLarge()) { 731 showOutlines(); 732 mIsStaticWallpaper = mWallpaperManager.getWallpaperInfo() == null; 733 } 734 735 // If we are not fading in adjacent screens, we still need to restore the alpha in case the 736 // user scrolls while we are transitioning (should not affect dispatchDraw optimizations) 737 if (!mWorkspaceFadeInAdjacentScreens) { 738 for (int i = 0; i < getChildCount(); ++i) { 739 ((CellLayout) getPageAt(i)).setShortcutAndWidgetAlpha(1f); 740 } 741 } 742 743 // Show the scroll indicator as you pan the page 744 showScrollingIndicator(false); 745 } 746 747 protected void onPageEndMoving() { 748 super.onPageEndMoving(); 749 750 if (isHardwareAccelerated()) { 751 updateChildrenLayersEnabled(false); 752 } else { 753 clearChildrenCache(); 754 } 755 756 757 if (mDragController.isDragging()) { 758 if (isSmall()) { 759 // If we are in springloaded mode, then force an event to check if the current touch 760 // is under a new page (to scroll to) 761 mDragController.forceMoveEvent(); 762 } 763 } else { 764 // If we are not mid-dragging, hide the page outlines if we are on a large screen 765 if (LauncherApplication.isScreenLarge()) { 766 hideOutlines(); 767 } 768 769 // Hide the scroll indicator as you pan the page 770 if (!mDragController.isDragging()) { 771 hideScrollingIndicator(false); 772 } 773 } 774 mOverScrollMaxBackgroundAlpha = 0.0f; 775 776 if (mDelayedResizeRunnable != null) { 777 mDelayedResizeRunnable.run(); 778 mDelayedResizeRunnable = null; 779 } 780 781 if (mDelayedSnapToPageRunnable != null) { 782 mDelayedSnapToPageRunnable.run(); 783 mDelayedSnapToPageRunnable = null; 784 } 785 } 786 787 @Override 788 protected void notifyPageSwitchListener() { 789 super.notifyPageSwitchListener(); 790 Launcher.setScreen(mCurrentPage); 791 }; 792 793 // As a ratio of screen height, the total distance we want the parallax effect to span 794 // horizontally 795 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 796 float aspectRatio = width / (float) height; 797 798 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 799 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 800 // We will use these two data points to extrapolate how much the wallpaper parallax effect 801 // to span (ie travel) at any aspect ratio: 802 803 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 804 final float ASPECT_RATIO_PORTRAIT = 10/16f; 805 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 806 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 807 808 // To find out the desired width at different aspect ratios, we use the following two 809 // formulas, where the coefficient on x is the aspect ratio (width/height): 810 // (16/10)x + y = 1.5 811 // (10/16)x + y = 1.2 812 // We solve for x and y and end up with a final formula: 813 final float x = 814 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 815 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 816 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 817 return x * aspectRatio + y; 818 } 819 820 // The range of scroll values for Workspace 821 private int getScrollRange() { 822 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 823 } 824 825 protected void setWallpaperDimension() { 826 Point minDims = new Point(); 827 Point maxDims = new Point(); 828 mLauncher.getWindowManager().getDefaultDisplay().getCurrentSizeRange(minDims, maxDims); 829 830 final int maxDim = Math.max(maxDims.x, maxDims.y); 831 final int minDim = Math.min(minDims.x, minDims.y); 832 833 // We need to ensure that there is enough extra space in the wallpaper for the intended 834 // parallax effects 835 if (LauncherApplication.isScreenLarge()) { 836 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 837 mWallpaperHeight = maxDim; 838 } else { 839 mWallpaperWidth = Math.max((int) (minDim * WALLPAPER_SCREENS_SPAN), maxDim); 840 mWallpaperHeight = maxDim; 841 } 842 new Thread("setWallpaperDimension") { 843 public void run() { 844 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 845 } 846 }.start(); 847 } 848 849 private float wallpaperOffsetForCurrentScroll() { 850 // Set wallpaper offset steps (1 / (number of screens - 1)) 851 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f); 852 853 // For the purposes of computing the scrollRange and overScrollOffset, we assume 854 // that mLayoutScale is 1. This means that when we're in spring-loaded mode, 855 // there's no discrepancy between the wallpaper offset for a given page. 856 float layoutScale = mLayoutScale; 857 mLayoutScale = 1f; 858 int scrollRange = getScrollRange(); 859 860 // Again, we adjust the wallpaper offset to be consistent between values of mLayoutScale 861 float adjustedScrollX = Math.max(0, Math.min(getScrollX(), mMaxScrollX)); 862 adjustedScrollX *= mWallpaperScrollRatio; 863 mLayoutScale = layoutScale; 864 865 float scrollProgress = 866 adjustedScrollX / (float) scrollRange; 867 868 if (LauncherApplication.isScreenLarge() && mIsStaticWallpaper) { 869 // The wallpaper travel width is how far, from left to right, the wallpaper will move 870 // at this orientation. On tablets in portrait mode we don't move all the way to the 871 // edges of the wallpaper, or otherwise the parallax effect would be too strong. 872 int wallpaperTravelWidth = Math.min(mWallpaperTravelWidth, mWallpaperWidth); 873 874 float offsetInDips = wallpaperTravelWidth * scrollProgress + 875 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 876 float offset = offsetInDips / (float) mWallpaperWidth; 877 return offset; 878 } else { 879 return scrollProgress; 880 } 881 } 882 883 private void syncWallpaperOffsetWithScroll() { 884 final boolean enableWallpaperEffects = isHardwareAccelerated(); 885 if (enableWallpaperEffects) { 886 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 887 } 888 } 889 890 public void updateWallpaperOffsetImmediately() { 891 mUpdateWallpaperOffsetImmediately = true; 892 } 893 894 private void updateWallpaperOffsets() { 895 boolean updateNow = false; 896 boolean keepUpdating = true; 897 if (mUpdateWallpaperOffsetImmediately) { 898 updateNow = true; 899 keepUpdating = false; 900 mWallpaperOffset.jumpToFinal(); 901 mUpdateWallpaperOffsetImmediately = false; 902 } else { 903 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 904 } 905 if (updateNow) { 906 if (mWindowToken != null) { 907 mWallpaperManager.setWallpaperOffsets(mWindowToken, 908 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 909 } 910 } 911 if (keepUpdating) { 912 invalidate(); 913 } 914 } 915 916 @Override 917 protected void updateCurrentPageScroll() { 918 super.updateCurrentPageScroll(); 919 computeWallpaperScrollRatio(mCurrentPage); 920 } 921 922 @Override 923 protected void snapToPage(int whichPage) { 924 super.snapToPage(whichPage); 925 computeWallpaperScrollRatio(whichPage); 926 } 927 928 @Override 929 protected void snapToPage(int whichPage, int duration) { 930 super.snapToPage(whichPage, duration); 931 computeWallpaperScrollRatio(whichPage); 932 } 933 934 protected void snapToPage(int whichPage, Runnable r) { 935 if (mDelayedSnapToPageRunnable != null) { 936 mDelayedSnapToPageRunnable.run(); 937 } 938 mDelayedSnapToPageRunnable = r; 939 snapToPage(whichPage, SLOW_PAGE_SNAP_ANIMATION_DURATION); 940 } 941 942 private void computeWallpaperScrollRatio(int page) { 943 // Here, we determine what the desired scroll would be with and without a layout scale, 944 // and compute a ratio between the two. This allows us to adjust the wallpaper offset 945 // as though there is no layout scale. 946 float layoutScale = mLayoutScale; 947 int scaled = getChildOffset(page) - getRelativeChildOffset(page); 948 mLayoutScale = 1.0f; 949 float unscaled = getChildOffset(page) - getRelativeChildOffset(page); 950 mLayoutScale = layoutScale; 951 if (scaled > 0) { 952 mWallpaperScrollRatio = (1.0f * unscaled) / scaled; 953 } else { 954 mWallpaperScrollRatio = 1f; 955 } 956 } 957 958 class WallpaperOffsetInterpolator { 959 float mFinalHorizontalWallpaperOffset = 0.0f; 960 float mFinalVerticalWallpaperOffset = 0.5f; 961 float mHorizontalWallpaperOffset = 0.0f; 962 float mVerticalWallpaperOffset = 0.5f; 963 long mLastWallpaperOffsetUpdateTime; 964 boolean mIsMovingFast; 965 boolean mOverrideHorizontalCatchupConstant; 966 float mHorizontalCatchupConstant = 0.35f; 967 float mVerticalCatchupConstant = 0.35f; 968 969 public WallpaperOffsetInterpolator() { 970 } 971 972 public void setOverrideHorizontalCatchupConstant(boolean override) { 973 mOverrideHorizontalCatchupConstant = override; 974 } 975 976 public void setHorizontalCatchupConstant(float f) { 977 mHorizontalCatchupConstant = f; 978 } 979 980 public void setVerticalCatchupConstant(float f) { 981 mVerticalCatchupConstant = f; 982 } 983 984 public boolean computeScrollOffset() { 985 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 986 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 987 mIsMovingFast = false; 988 return false; 989 } 990 boolean isLandscape = mDisplaySize.x > mDisplaySize.y; 991 992 long currentTime = System.currentTimeMillis(); 993 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 994 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 995 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 996 997 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 998 if (!mIsMovingFast && xdiff > 0.07) { 999 mIsMovingFast = true; 1000 } 1001 1002 float fractionToCatchUpIn1MsHorizontal; 1003 if (mOverrideHorizontalCatchupConstant) { 1004 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 1005 } else if (mIsMovingFast) { 1006 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 1007 } else { 1008 // slow 1009 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 1010 } 1011 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 1012 1013 fractionToCatchUpIn1MsHorizontal /= 33f; 1014 fractionToCatchUpIn1MsVertical /= 33f; 1015 1016 final float UPDATE_THRESHOLD = 0.00001f; 1017 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 1018 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 1019 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 1020 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 1021 1022 // Don't have any lag between workspace and wallpaper on non-large devices 1023 if (!LauncherApplication.isScreenLarge() || jumpToFinalValue) { 1024 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 1025 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 1026 } else { 1027 float percentToCatchUpVertical = 1028 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 1029 float percentToCatchUpHorizontal = 1030 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 1031 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 1032 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 1033 } 1034 1035 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 1036 return true; 1037 } 1038 1039 public float getCurrX() { 1040 return mHorizontalWallpaperOffset; 1041 } 1042 1043 public float getFinalX() { 1044 return mFinalHorizontalWallpaperOffset; 1045 } 1046 1047 public float getCurrY() { 1048 return mVerticalWallpaperOffset; 1049 } 1050 1051 public float getFinalY() { 1052 return mFinalVerticalWallpaperOffset; 1053 } 1054 1055 public void setFinalX(float x) { 1056 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 1057 } 1058 1059 public void setFinalY(float y) { 1060 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 1061 } 1062 1063 public void jumpToFinal() { 1064 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 1065 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 1066 } 1067 } 1068 1069 @Override 1070 public void computeScroll() { 1071 super.computeScroll(); 1072 syncWallpaperOffsetWithScroll(); 1073 } 1074 1075 void showOutlines() { 1076 if (!isSmall() && !mIsSwitchingState) { 1077 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1078 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1079 mChildrenOutlineFadeInAnimation = LauncherAnimUtils.ofFloat(this, "childrenOutlineAlpha", 1.0f); 1080 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 1081 mChildrenOutlineFadeInAnimation.start(); 1082 } 1083 } 1084 1085 void hideOutlines() { 1086 if (!isSmall() && !mIsSwitchingState) { 1087 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1088 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1089 mChildrenOutlineFadeOutAnimation = LauncherAnimUtils.ofFloat(this, "childrenOutlineAlpha", 0.0f); 1090 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 1091 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 1092 mChildrenOutlineFadeOutAnimation.start(); 1093 } 1094 } 1095 1096 public void showOutlinesTemporarily() { 1097 if (!mIsPageMoving && !isTouchActive()) { 1098 snapToPage(mCurrentPage); 1099 } 1100 } 1101 1102 public void setChildrenOutlineAlpha(float alpha) { 1103 mChildrenOutlineAlpha = alpha; 1104 for (int i = 0; i < getChildCount(); i++) { 1105 CellLayout cl = (CellLayout) getChildAt(i); 1106 cl.setBackgroundAlpha(alpha); 1107 } 1108 } 1109 1110 public float getChildrenOutlineAlpha() { 1111 return mChildrenOutlineAlpha; 1112 } 1113 1114 void disableBackground() { 1115 mDrawBackground = false; 1116 } 1117 void enableBackground() { 1118 mDrawBackground = true; 1119 } 1120 1121 private void animateBackgroundGradient(float finalAlpha, boolean animated) { 1122 if (mBackground == null) return; 1123 if (mBackgroundFadeInAnimation != null) { 1124 mBackgroundFadeInAnimation.cancel(); 1125 mBackgroundFadeInAnimation = null; 1126 } 1127 if (mBackgroundFadeOutAnimation != null) { 1128 mBackgroundFadeOutAnimation.cancel(); 1129 mBackgroundFadeOutAnimation = null; 1130 } 1131 float startAlpha = getBackgroundAlpha(); 1132 if (finalAlpha != startAlpha) { 1133 if (animated) { 1134 mBackgroundFadeOutAnimation = LauncherAnimUtils.ofFloat(startAlpha, finalAlpha); 1135 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1136 public void onAnimationUpdate(ValueAnimator animation) { 1137 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1138 } 1139 }); 1140 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1141 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1142 mBackgroundFadeOutAnimation.start(); 1143 } else { 1144 setBackgroundAlpha(finalAlpha); 1145 } 1146 } 1147 } 1148 1149 public void setBackgroundAlpha(float alpha) { 1150 if (alpha != mBackgroundAlpha) { 1151 mBackgroundAlpha = alpha; 1152 invalidate(); 1153 } 1154 } 1155 1156 public float getBackgroundAlpha() { 1157 return mBackgroundAlpha; 1158 } 1159 1160 float backgroundAlphaInterpolator(float r) { 1161 float pivotA = 0.1f; 1162 float pivotB = 0.4f; 1163 if (r < pivotA) { 1164 return 0; 1165 } else if (r > pivotB) { 1166 return 1.0f; 1167 } else { 1168 return (r - pivotA)/(pivotB - pivotA); 1169 } 1170 } 1171 1172 float overScrollBackgroundAlphaInterpolator(float r) { 1173 float threshold = 0.08f; 1174 1175 if (r > mOverScrollMaxBackgroundAlpha) { 1176 mOverScrollMaxBackgroundAlpha = r; 1177 } else if (r < mOverScrollMaxBackgroundAlpha) { 1178 r = mOverScrollMaxBackgroundAlpha; 1179 } 1180 1181 return Math.min(r / threshold, 1.0f); 1182 } 1183 1184 private void updatePageAlphaValues(int screenCenter) { 1185 boolean isInOverscroll = mOverScrollX < 0 || mOverScrollX > mMaxScrollX; 1186 if (mWorkspaceFadeInAdjacentScreens && 1187 mState == State.NORMAL && 1188 !mIsSwitchingState && 1189 !isInOverscroll) { 1190 for (int i = 0; i < getChildCount(); i++) { 1191 CellLayout child = (CellLayout) getChildAt(i); 1192 if (child != null) { 1193 float scrollProgress = getScrollProgress(screenCenter, child, i); 1194 float alpha = 1 - Math.abs(scrollProgress); 1195 child.getShortcutsAndWidgets().setAlpha(alpha); 1196 if (!mIsDragOccuring) { 1197 child.setBackgroundAlphaMultiplier( 1198 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1199 } else { 1200 child.setBackgroundAlphaMultiplier(1f); 1201 } 1202 } 1203 } 1204 } 1205 } 1206 1207 private void setChildrenBackgroundAlphaMultipliers(float a) { 1208 for (int i = 0; i < getChildCount(); i++) { 1209 CellLayout child = (CellLayout) getChildAt(i); 1210 child.setBackgroundAlphaMultiplier(a); 1211 } 1212 } 1213 1214 @Override 1215 protected void screenScrolled(int screenCenter) { 1216 super.screenScrolled(screenCenter); 1217 1218 updatePageAlphaValues(screenCenter); 1219 enableHwLayersOnVisiblePages(); 1220 1221 if (mOverScrollX < 0 || mOverScrollX > mMaxScrollX) { 1222 int index = mOverScrollX < 0 ? 0 : getChildCount() - 1; 1223 CellLayout cl = (CellLayout) getChildAt(index); 1224 float scrollProgress = getScrollProgress(screenCenter, cl, index); 1225 cl.setOverScrollAmount(Math.abs(scrollProgress), index == 0); 1226 float rotation = - WORKSPACE_OVERSCROLL_ROTATION * scrollProgress; 1227 cl.setRotationY(rotation); 1228 setFadeForOverScroll(Math.abs(scrollProgress)); 1229 if (!mOverscrollTransformsSet) { 1230 mOverscrollTransformsSet = true; 1231 cl.setCameraDistance(mDensity * mCameraDistance); 1232 cl.setPivotX(cl.getMeasuredWidth() * (index == 0 ? 0.75f : 0.25f)); 1233 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1234 cl.setOverscrollTransformsDirty(true); 1235 } 1236 } else { 1237 if (mOverscrollFade != 0) { 1238 setFadeForOverScroll(0); 1239 } 1240 if (mOverscrollTransformsSet) { 1241 mOverscrollTransformsSet = false; 1242 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1243 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1244 } 1245 } 1246 } 1247 1248 @Override 1249 protected void overScroll(float amount) { 1250 acceleratedOverScroll(amount); 1251 } 1252 1253 protected void onAttachedToWindow() { 1254 super.onAttachedToWindow(); 1255 mWindowToken = getWindowToken(); 1256 computeScroll(); 1257 mDragController.setWindowToken(mWindowToken); 1258 } 1259 1260 protected void onDetachedFromWindow() { 1261 mWindowToken = null; 1262 } 1263 1264 @Override 1265 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1266 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1267 mUpdateWallpaperOffsetImmediately = true; 1268 } 1269 super.onLayout(changed, left, top, right, bottom); 1270 } 1271 1272 @Override 1273 protected void onDraw(Canvas canvas) { 1274 updateWallpaperOffsets(); 1275 1276 // Draw the background gradient if necessary 1277 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1278 int alpha = (int) (mBackgroundAlpha * 255); 1279 mBackground.setAlpha(alpha); 1280 mBackground.setBounds(getScrollX(), 0, getScrollX() + getMeasuredWidth(), 1281 getMeasuredHeight()); 1282 mBackground.draw(canvas); 1283 } 1284 1285 super.onDraw(canvas); 1286 1287 // Call back to LauncherModel to finish binding after the first draw 1288 post(new Runnable() { 1289 @Override 1290 public void run() { 1291 mLauncher.getModel().bindRemainingSynchronousPages(); 1292 } 1293 }); 1294 } 1295 1296 boolean isDrawingBackgroundGradient() { 1297 return (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground); 1298 } 1299 1300 @Override 1301 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1302 if (!mLauncher.isAllAppsVisible()) { 1303 final Folder openFolder = getOpenFolder(); 1304 if (openFolder != null) { 1305 return openFolder.requestFocus(direction, previouslyFocusedRect); 1306 } else { 1307 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1308 } 1309 } 1310 return false; 1311 } 1312 1313 @Override 1314 public int getDescendantFocusability() { 1315 if (isSmall()) { 1316 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1317 } 1318 return super.getDescendantFocusability(); 1319 } 1320 1321 @Override 1322 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1323 if (!mLauncher.isAllAppsVisible()) { 1324 final Folder openFolder = getOpenFolder(); 1325 if (openFolder != null) { 1326 openFolder.addFocusables(views, direction); 1327 } else { 1328 super.addFocusables(views, direction, focusableMode); 1329 } 1330 } 1331 } 1332 1333 public boolean isSmall() { 1334 return mState == State.SMALL || mState == State.SPRING_LOADED; 1335 } 1336 1337 void enableChildrenCache(int fromPage, int toPage) { 1338 if (fromPage > toPage) { 1339 final int temp = fromPage; 1340 fromPage = toPage; 1341 toPage = temp; 1342 } 1343 1344 final int screenCount = getChildCount(); 1345 1346 fromPage = Math.max(fromPage, 0); 1347 toPage = Math.min(toPage, screenCount - 1); 1348 1349 for (int i = fromPage; i <= toPage; i++) { 1350 final CellLayout layout = (CellLayout) getChildAt(i); 1351 layout.setChildrenDrawnWithCacheEnabled(true); 1352 layout.setChildrenDrawingCacheEnabled(true); 1353 } 1354 } 1355 1356 void clearChildrenCache() { 1357 final int screenCount = getChildCount(); 1358 for (int i = 0; i < screenCount; i++) { 1359 final CellLayout layout = (CellLayout) getChildAt(i); 1360 layout.setChildrenDrawnWithCacheEnabled(false); 1361 // In software mode, we don't want the items to continue to be drawn into bitmaps 1362 if (!isHardwareAccelerated()) { 1363 layout.setChildrenDrawingCacheEnabled(false); 1364 } 1365 } 1366 } 1367 1368 1369 private void updateChildrenLayersEnabled(boolean force) { 1370 boolean small = mState == State.SMALL || mIsSwitchingState; 1371 boolean enableChildrenLayers = force || small || mAnimatingViewIntoPlace || isPageMoving(); 1372 1373 if (enableChildrenLayers != mChildrenLayersEnabled) { 1374 mChildrenLayersEnabled = enableChildrenLayers; 1375 if (mChildrenLayersEnabled) { 1376 enableHwLayersOnVisiblePages(); 1377 } else { 1378 for (int i = 0; i < getPageCount(); i++) { 1379 final CellLayout cl = (CellLayout) getChildAt(i); 1380 cl.disableHardwareLayers(); 1381 } 1382 } 1383 } 1384 } 1385 1386 private void enableHwLayersOnVisiblePages() { 1387 if (mChildrenLayersEnabled) { 1388 final int screenCount = getChildCount(); 1389 getVisiblePages(mTempVisiblePagesRange); 1390 int leftScreen = mTempVisiblePagesRange[0]; 1391 int rightScreen = mTempVisiblePagesRange[1]; 1392 if (leftScreen == rightScreen) { 1393 // make sure we're caching at least two pages always 1394 if (rightScreen < screenCount - 1) { 1395 rightScreen++; 1396 } else if (leftScreen > 0) { 1397 leftScreen--; 1398 } 1399 } 1400 for (int i = 0; i < screenCount; i++) { 1401 final CellLayout layout = (CellLayout) getChildAt(i); 1402 if (!(leftScreen <= i && i <= rightScreen && shouldDrawChild(layout))) { 1403 layout.disableHardwareLayers(); 1404 } 1405 } 1406 for (int i = 0; i < screenCount; i++) { 1407 final CellLayout layout = (CellLayout) getChildAt(i); 1408 if (leftScreen <= i && i <= rightScreen && shouldDrawChild(layout)) { 1409 layout.enableHardwareLayers(); 1410 } 1411 } 1412 } 1413 } 1414 1415 public void buildPageHardwareLayers() { 1416 // force layers to be enabled just for the call to buildLayer 1417 updateChildrenLayersEnabled(true); 1418 if (getWindowToken() != null) { 1419 final int childCount = getChildCount(); 1420 for (int i = 0; i < childCount; i++) { 1421 CellLayout cl = (CellLayout) getChildAt(i); 1422 cl.buildHardwareLayer(); 1423 } 1424 } 1425 updateChildrenLayersEnabled(false); 1426 } 1427 1428 protected void onWallpaperTap(MotionEvent ev) { 1429 final int[] position = mTempCell; 1430 getLocationOnScreen(position); 1431 1432 int pointerIndex = ev.getActionIndex(); 1433 position[0] += (int) ev.getX(pointerIndex); 1434 position[1] += (int) ev.getY(pointerIndex); 1435 1436 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1437 ev.getAction() == MotionEvent.ACTION_UP 1438 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1439 position[0], position[1], 0, null); 1440 } 1441 1442 /* 1443 * This interpolator emulates the rate at which the perceived scale of an object changes 1444 * as its distance from a camera increases. When this interpolator is applied to a scale 1445 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1446 * from the camera. 1447 */ 1448 static class ZInterpolator implements TimeInterpolator { 1449 private float focalLength; 1450 1451 public ZInterpolator(float foc) { 1452 focalLength = foc; 1453 } 1454 1455 public float getInterpolation(float input) { 1456 return (1.0f - focalLength / (focalLength + input)) / 1457 (1.0f - focalLength / (focalLength + 1.0f)); 1458 } 1459 } 1460 1461 /* 1462 * The exact reverse of ZInterpolator. 1463 */ 1464 static class InverseZInterpolator implements TimeInterpolator { 1465 private ZInterpolator zInterpolator; 1466 public InverseZInterpolator(float foc) { 1467 zInterpolator = new ZInterpolator(foc); 1468 } 1469 public float getInterpolation(float input) { 1470 return 1 - zInterpolator.getInterpolation(1 - input); 1471 } 1472 } 1473 1474 /* 1475 * ZInterpolator compounded with an ease-out. 1476 */ 1477 static class ZoomOutInterpolator implements TimeInterpolator { 1478 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(0.75f); 1479 private final ZInterpolator zInterpolator = new ZInterpolator(0.13f); 1480 1481 public float getInterpolation(float input) { 1482 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1483 } 1484 } 1485 1486 /* 1487 * InvereZInterpolator compounded with an ease-out. 1488 */ 1489 static class ZoomInInterpolator implements TimeInterpolator { 1490 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1491 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1492 1493 public float getInterpolation(float input) { 1494 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1495 } 1496 } 1497 1498 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1499 1500 /* 1501 * 1502 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1503 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1504 * 1505 * These methods mark the appropriate pages as accepting drops (which alters their visual 1506 * appearance). 1507 * 1508 */ 1509 public void onDragStartedWithItem(View v) { 1510 final Canvas canvas = new Canvas(); 1511 1512 // The outline is used to visualize where the item will land if dropped 1513 mDragOutline = createDragOutline(v, canvas, DRAG_BITMAP_PADDING); 1514 } 1515 1516 public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, boolean clipAlpha) { 1517 final Canvas canvas = new Canvas(); 1518 1519 int[] size = estimateItemSize(info.spanX, info.spanY, info, false); 1520 1521 // The outline is used to visualize where the item will land if dropped 1522 mDragOutline = createDragOutline(b, canvas, DRAG_BITMAP_PADDING, size[0], 1523 size[1], clipAlpha); 1524 } 1525 1526 public void exitWidgetResizeMode() { 1527 DragLayer dragLayer = mLauncher.getDragLayer(); 1528 dragLayer.clearAllResizeFrames(); 1529 } 1530 1531 private void initAnimationArrays() { 1532 final int childCount = getChildCount(); 1533 if (mOldTranslationXs != null) return; 1534 mOldTranslationXs = new float[childCount]; 1535 mOldTranslationYs = new float[childCount]; 1536 mOldScaleXs = new float[childCount]; 1537 mOldScaleYs = new float[childCount]; 1538 mOldBackgroundAlphas = new float[childCount]; 1539 mOldAlphas = new float[childCount]; 1540 mNewTranslationXs = new float[childCount]; 1541 mNewTranslationYs = new float[childCount]; 1542 mNewScaleXs = new float[childCount]; 1543 mNewScaleYs = new float[childCount]; 1544 mNewBackgroundAlphas = new float[childCount]; 1545 mNewAlphas = new float[childCount]; 1546 mNewRotationYs = new float[childCount]; 1547 } 1548 1549 Animator getChangeStateAnimation(final State state, boolean animated) { 1550 return getChangeStateAnimation(state, animated, 0); 1551 } 1552 1553 Animator getChangeStateAnimation(final State state, boolean animated, int delay) { 1554 if (mState == state) { 1555 return null; 1556 } 1557 1558 // Initialize animation arrays for the first time if necessary 1559 initAnimationArrays(); 1560 1561 AnimatorSet anim = animated ? LauncherAnimUtils.createAnimatorSet() : null; 1562 1563 // Stop any scrolling, move to the current page right away 1564 setCurrentPage(getNextPage()); 1565 1566 final State oldState = mState; 1567 final boolean oldStateIsNormal = (oldState == State.NORMAL); 1568 final boolean oldStateIsSpringLoaded = (oldState == State.SPRING_LOADED); 1569 final boolean oldStateIsSmall = (oldState == State.SMALL); 1570 mState = state; 1571 final boolean stateIsNormal = (state == State.NORMAL); 1572 final boolean stateIsSpringLoaded = (state == State.SPRING_LOADED); 1573 final boolean stateIsSmall = (state == State.SMALL); 1574 float finalScaleFactor = 1.0f; 1575 float finalBackgroundAlpha = stateIsSpringLoaded ? 1.0f : 0f; 1576 float translationX = 0; 1577 float translationY = 0; 1578 boolean zoomIn = true; 1579 1580 if (state != State.NORMAL) { 1581 finalScaleFactor = mSpringLoadedShrinkFactor - (stateIsSmall ? 0.1f : 0); 1582 setPageSpacing(mSpringLoadedPageSpacing); 1583 if (oldStateIsNormal && stateIsSmall) { 1584 zoomIn = false; 1585 setLayoutScale(finalScaleFactor); 1586 updateChildrenLayersEnabled(false); 1587 } else { 1588 finalBackgroundAlpha = 1.0f; 1589 setLayoutScale(finalScaleFactor); 1590 } 1591 } else { 1592 setPageSpacing(PagedView.AUTOMATIC_PAGE_SPACING); 1593 setLayoutScale(1.0f); 1594 } 1595 1596 final int duration = zoomIn ? 1597 getResources().getInteger(R.integer.config_workspaceUnshrinkTime) : 1598 getResources().getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1599 for (int i = 0; i < getChildCount(); i++) { 1600 final CellLayout cl = (CellLayout) getChildAt(i); 1601 float finalAlpha = (!mWorkspaceFadeInAdjacentScreens || stateIsSpringLoaded || 1602 (i == mCurrentPage)) ? 1f : 0f; 1603 float currentAlpha = cl.getShortcutsAndWidgets().getAlpha(); 1604 float initialAlpha = currentAlpha; 1605 1606 // Determine the pages alpha during the state transition 1607 if ((oldStateIsSmall && stateIsNormal) || 1608 (oldStateIsNormal && stateIsSmall)) { 1609 // To/from workspace - only show the current page unless the transition is not 1610 // animated and the animation end callback below doesn't run; 1611 // or, if we're in spring-loaded mode 1612 if (i == mCurrentPage || !animated || oldStateIsSpringLoaded) { 1613 finalAlpha = 1f; 1614 } else { 1615 initialAlpha = 0f; 1616 finalAlpha = 0f; 1617 } 1618 } 1619 1620 mOldAlphas[i] = initialAlpha; 1621 mNewAlphas[i] = finalAlpha; 1622 if (animated) { 1623 mOldTranslationXs[i] = cl.getTranslationX(); 1624 mOldTranslationYs[i] = cl.getTranslationY(); 1625 mOldScaleXs[i] = cl.getScaleX(); 1626 mOldScaleYs[i] = cl.getScaleY(); 1627 mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1628 1629 mNewTranslationXs[i] = translationX; 1630 mNewTranslationYs[i] = translationY; 1631 mNewScaleXs[i] = finalScaleFactor; 1632 mNewScaleYs[i] = finalScaleFactor; 1633 mNewBackgroundAlphas[i] = finalBackgroundAlpha; 1634 } else { 1635 cl.setTranslationX(translationX); 1636 cl.setTranslationY(translationY); 1637 cl.setScaleX(finalScaleFactor); 1638 cl.setScaleY(finalScaleFactor); 1639 cl.setBackgroundAlpha(finalBackgroundAlpha); 1640 cl.setShortcutAndWidgetAlpha(finalAlpha); 1641 } 1642 } 1643 1644 if (animated) { 1645 for (int index = 0; index < getChildCount(); index++) { 1646 final int i = index; 1647 final CellLayout cl = (CellLayout) getChildAt(i); 1648 float currentAlpha = cl.getShortcutsAndWidgets().getAlpha(); 1649 if (mOldAlphas[i] == 0 && mNewAlphas[i] == 0) { 1650 cl.setTranslationX(mNewTranslationXs[i]); 1651 cl.setTranslationY(mNewTranslationYs[i]); 1652 cl.setScaleX(mNewScaleXs[i]); 1653 cl.setScaleY(mNewScaleYs[i]); 1654 cl.setBackgroundAlpha(mNewBackgroundAlphas[i]); 1655 cl.setShortcutAndWidgetAlpha(mNewAlphas[i]); 1656 cl.setRotationY(mNewRotationYs[i]); 1657 } else { 1658 LauncherViewPropertyAnimator a = new LauncherViewPropertyAnimator(cl); 1659 a.translationX(mNewTranslationXs[i]) 1660 .translationY(mNewTranslationYs[i]) 1661 .scaleX(mNewScaleXs[i]) 1662 .scaleY(mNewScaleYs[i]) 1663 .setDuration(duration) 1664 .setInterpolator(mZoomInInterpolator); 1665 anim.play(a); 1666 1667 if (mOldAlphas[i] != mNewAlphas[i] || currentAlpha != mNewAlphas[i]) { 1668 LauncherViewPropertyAnimator alphaAnim = 1669 new LauncherViewPropertyAnimator(cl.getShortcutsAndWidgets()); 1670 alphaAnim.alpha(mNewAlphas[i]) 1671 .setDuration(duration) 1672 .setInterpolator(mZoomInInterpolator); 1673 anim.play(alphaAnim); 1674 } 1675 if (mOldBackgroundAlphas[i] != 0 || 1676 mNewBackgroundAlphas[i] != 0) { 1677 ValueAnimator bgAnim = LauncherAnimUtils.ofFloat(0f, 1f).setDuration(duration); 1678 bgAnim.setInterpolator(mZoomInInterpolator); 1679 bgAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1680 public void onAnimationUpdate(float a, float b) { 1681 cl.setBackgroundAlpha( 1682 a * mOldBackgroundAlphas[i] + 1683 b * mNewBackgroundAlphas[i]); 1684 } 1685 }); 1686 anim.play(bgAnim); 1687 } 1688 } 1689 } 1690 buildPageHardwareLayers(); 1691 anim.setStartDelay(delay); 1692 } 1693 1694 if (stateIsSpringLoaded) { 1695 // Right now we're covered by Apps Customize 1696 // Show the background gradient immediately, so the gradient will 1697 // be showing once AppsCustomize disappears 1698 animateBackgroundGradient(getResources().getInteger( 1699 R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, false); 1700 } else { 1701 // Fade the background gradient away 1702 animateBackgroundGradient(0f, true); 1703 } 1704 return anim; 1705 } 1706 1707 @Override 1708 public void onLauncherTransitionPrepare(Launcher l, boolean animated, boolean toWorkspace) { 1709 mIsSwitchingState = true; 1710 cancelScrollingIndicatorAnimations(); 1711 } 1712 1713 @Override 1714 public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) { 1715 } 1716 1717 @Override 1718 public void onLauncherTransitionStep(Launcher l, float t) { 1719 mTransitionProgress = t; 1720 } 1721 1722 @Override 1723 public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) { 1724 mIsSwitchingState = false; 1725 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 1726 updateChildrenLayersEnabled(false); 1727 // The code in getChangeStateAnimation to determine initialAlpha and finalAlpha will ensure 1728 // ensure that only the current page is visible during (and subsequently, after) the 1729 // transition animation. If fade adjacent pages is disabled, then re-enable the page 1730 // visibility after the transition animation. 1731 if (!mWorkspaceFadeInAdjacentScreens) { 1732 for (int i = 0; i < getChildCount(); i++) { 1733 final CellLayout cl = (CellLayout) getChildAt(i); 1734 cl.setShortcutAndWidgetAlpha(1f); 1735 } 1736 } 1737 } 1738 1739 @Override 1740 public View getContent() { 1741 return this; 1742 } 1743 1744 /** 1745 * Draw the View v into the given Canvas. 1746 * 1747 * @param v the view to draw 1748 * @param destCanvas the canvas to draw on 1749 * @param padding the horizontal and vertical padding to use when drawing 1750 */ 1751 private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { 1752 final Rect clipRect = mTempRect; 1753 v.getDrawingRect(clipRect); 1754 1755 boolean textVisible = false; 1756 1757 destCanvas.save(); 1758 if (v instanceof TextView && pruneToDrawable) { 1759 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1760 clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); 1761 destCanvas.translate(padding / 2, padding / 2); 1762 d.draw(destCanvas); 1763 } else { 1764 if (v instanceof FolderIcon) { 1765 // For FolderIcons the text can bleed into the icon area, and so we need to 1766 // hide the text completely (which can't be achieved by clipping). 1767 if (((FolderIcon) v).getTextVisible()) { 1768 ((FolderIcon) v).setTextVisible(false); 1769 textVisible = true; 1770 } 1771 } else if (v instanceof BubbleTextView) { 1772 final BubbleTextView tv = (BubbleTextView) v; 1773 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1774 tv.getLayout().getLineTop(0); 1775 } else if (v instanceof TextView) { 1776 final TextView tv = (TextView) v; 1777 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1778 tv.getLayout().getLineTop(0); 1779 } 1780 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1781 destCanvas.clipRect(clipRect, Op.REPLACE); 1782 v.draw(destCanvas); 1783 1784 // Restore text visibility of FolderIcon if necessary 1785 if (textVisible) { 1786 ((FolderIcon) v).setTextVisible(true); 1787 } 1788 } 1789 destCanvas.restore(); 1790 } 1791 1792 /** 1793 * Returns a new bitmap to show when the given View is being dragged around. 1794 * Responsibility for the bitmap is transferred to the caller. 1795 */ 1796 public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1797 Bitmap b; 1798 1799 if (v instanceof TextView) { 1800 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1801 b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, 1802 d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); 1803 } else { 1804 b = Bitmap.createBitmap( 1805 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1806 } 1807 1808 canvas.setBitmap(b); 1809 drawDragView(v, canvas, padding, true); 1810 canvas.setBitmap(null); 1811 1812 return b; 1813 } 1814 1815 /** 1816 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1817 * Responsibility for the bitmap is transferred to the caller. 1818 */ 1819 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1820 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1821 final Bitmap b = Bitmap.createBitmap( 1822 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1823 1824 canvas.setBitmap(b); 1825 drawDragView(v, canvas, padding, true); 1826 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1827 canvas.setBitmap(null); 1828 return b; 1829 } 1830 1831 /** 1832 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1833 * Responsibility for the bitmap is transferred to the caller. 1834 */ 1835 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h, 1836 boolean clipAlpha) { 1837 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1838 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1839 canvas.setBitmap(b); 1840 1841 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 1842 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 1843 (h - padding) / (float) orig.getHeight()); 1844 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 1845 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 1846 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 1847 1848 // center the image 1849 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 1850 1851 canvas.drawBitmap(orig, src, dst, null); 1852 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor, 1853 clipAlpha); 1854 canvas.setBitmap(null); 1855 1856 return b; 1857 } 1858 1859 void startDrag(CellLayout.CellInfo cellInfo) { 1860 View child = cellInfo.cell; 1861 1862 // Make sure the drag was started by a long press as opposed to a long click. 1863 if (!child.isInTouchMode()) { 1864 return; 1865 } 1866 1867 mDragInfo = cellInfo; 1868 child.setVisibility(INVISIBLE); 1869 CellLayout layout = (CellLayout) child.getParent().getParent(); 1870 layout.prepareChildForDrag(child); 1871 1872 child.clearFocus(); 1873 child.setPressed(false); 1874 1875 final Canvas canvas = new Canvas(); 1876 1877 // The outline is used to visualize where the item will land if dropped 1878 mDragOutline = createDragOutline(child, canvas, DRAG_BITMAP_PADDING); 1879 beginDragShared(child, this); 1880 } 1881 1882 public void beginDragShared(View child, DragSource source) { 1883 Resources r = getResources(); 1884 1885 // The drag bitmap follows the touch point around on the screen 1886 final Bitmap b = createDragBitmap(child, new Canvas(), DRAG_BITMAP_PADDING); 1887 1888 final int bmpWidth = b.getWidth(); 1889 final int bmpHeight = b.getHeight(); 1890 1891 mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 1892 int dragLayerX = 1893 Math.round(mTempXY[0] - (bmpWidth - child.getScaleX() * child.getWidth()) / 2); 1894 int dragLayerY = 1895 Math.round(mTempXY[1] - (bmpHeight - child.getScaleY() * bmpHeight) / 2 1896 - DRAG_BITMAP_PADDING / 2); 1897 1898 Point dragVisualizeOffset = null; 1899 Rect dragRect = null; 1900 if (child instanceof BubbleTextView || child instanceof PagedViewIcon) { 1901 int iconSize = r.getDimensionPixelSize(R.dimen.app_icon_size); 1902 int iconPaddingTop = r.getDimensionPixelSize(R.dimen.app_icon_padding_top); 1903 int top = child.getPaddingTop(); 1904 int left = (bmpWidth - iconSize) / 2; 1905 int right = left + iconSize; 1906 int bottom = top + iconSize; 1907 dragLayerY += top; 1908 // Note: The drag region is used to calculate drag layer offsets, but the 1909 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 1910 dragVisualizeOffset = new Point(-DRAG_BITMAP_PADDING / 2, 1911 iconPaddingTop - DRAG_BITMAP_PADDING / 2); 1912 dragRect = new Rect(left, top, right, bottom); 1913 } else if (child instanceof FolderIcon) { 1914 int previewSize = r.getDimensionPixelSize(R.dimen.folder_preview_size); 1915 dragRect = new Rect(0, 0, child.getWidth(), previewSize); 1916 } 1917 1918 // Clear the pressed state if necessary 1919 if (child instanceof BubbleTextView) { 1920 BubbleTextView icon = (BubbleTextView) child; 1921 icon.clearPressedOrFocusedBackground(); 1922 } 1923 1924 mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 1925 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect, child.getScaleX()); 1926 b.recycle(); 1927 1928 // Show the scrolling indicator when you pick up an item 1929 showScrollingIndicator(false); 1930 } 1931 1932 void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, int screen, 1933 int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { 1934 View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); 1935 1936 final int[] cellXY = new int[2]; 1937 target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1938 addInScreen(view, container, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1939 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, cellXY[0], 1940 cellXY[1]); 1941 } 1942 1943 public boolean transitionStateShouldAllowDrop() { 1944 return ((!isSwitchingState() || mTransitionProgress > 0.5f) && mState != State.SMALL); 1945 } 1946 1947 /** 1948 * {@inheritDoc} 1949 */ 1950 public boolean acceptDrop(DragObject d) { 1951 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1952 CellLayout dropTargetLayout = mDropToLayout; 1953 if (d.dragSource != this) { 1954 // Don't accept the drop if we're not over a screen at time of drop 1955 if (dropTargetLayout == null) { 1956 return false; 1957 } 1958 if (!transitionStateShouldAllowDrop()) return false; 1959 1960 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 1961 d.dragView, mDragViewVisualCenter); 1962 1963 // We want the point to be mapped to the dragTarget. 1964 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 1965 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 1966 } else { 1967 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 1968 } 1969 1970 int spanX = 1; 1971 int spanY = 1; 1972 if (mDragInfo != null) { 1973 final CellLayout.CellInfo dragCellInfo = mDragInfo; 1974 spanX = dragCellInfo.spanX; 1975 spanY = dragCellInfo.spanY; 1976 } else { 1977 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 1978 spanX = dragInfo.spanX; 1979 spanY = dragInfo.spanY; 1980 } 1981 1982 int minSpanX = spanX; 1983 int minSpanY = spanY; 1984 if (d.dragInfo instanceof PendingAddWidgetInfo) { 1985 minSpanX = ((PendingAddWidgetInfo) d.dragInfo).minSpanX; 1986 minSpanY = ((PendingAddWidgetInfo) d.dragInfo).minSpanY; 1987 } 1988 1989 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 1990 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, dropTargetLayout, 1991 mTargetCell); 1992 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 1993 mDragViewVisualCenter[1], mTargetCell); 1994 if (willCreateUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, 1995 mTargetCell, distance, true)) { 1996 return true; 1997 } 1998 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, 1999 mTargetCell, distance)) { 2000 return true; 2001 } 2002 2003 int[] resultSpan = new int[2]; 2004 mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], 2005 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2006 null, mTargetCell, resultSpan, CellLayout.MODE_ACCEPT_DROP); 2007 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2008 2009 // Don't accept the drop if there's no room for the item 2010 if (!foundCell) { 2011 // Don't show the message if we are dropping on the AllApps button and the hotseat 2012 // is full 2013 boolean isHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2014 if (mTargetCell != null && isHotseat) { 2015 Hotseat hotseat = mLauncher.getHotseat(); 2016 if (hotseat.isAllAppsButtonRank( 2017 hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { 2018 return false; 2019 } 2020 } 2021 2022 mLauncher.showOutOfSpaceMessage(isHotseat); 2023 return false; 2024 } 2025 } 2026 return true; 2027 } 2028 2029 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, float 2030 distance, boolean considerTimeout) { 2031 if (distance > mMaxDistanceForFolderCreation) return false; 2032 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2033 2034 if (dropOverView != null) { 2035 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2036 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2037 return false; 2038 } 2039 } 2040 2041 boolean hasntMoved = false; 2042 if (mDragInfo != null) { 2043 hasntMoved = dropOverView == mDragInfo.cell; 2044 } 2045 2046 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2047 return false; 2048 } 2049 2050 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2051 boolean willBecomeShortcut = 2052 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2053 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2054 2055 return (aboveShortcut && willBecomeShortcut); 2056 } 2057 2058 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell, 2059 float distance) { 2060 if (distance > mMaxDistanceForFolderCreation) return false; 2061 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2062 2063 if (dropOverView != null) { 2064 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2065 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2066 return false; 2067 } 2068 } 2069 2070 if (dropOverView instanceof FolderIcon) { 2071 FolderIcon fi = (FolderIcon) dropOverView; 2072 if (fi.acceptDrop(dragInfo)) { 2073 return true; 2074 } 2075 } 2076 return false; 2077 } 2078 2079 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2080 int[] targetCell, float distance, boolean external, DragView dragView, 2081 Runnable postAnimationRunnable) { 2082 if (distance > mMaxDistanceForFolderCreation) return false; 2083 View v = target.getChildAt(targetCell[0], targetCell[1]); 2084 2085 boolean hasntMoved = false; 2086 if (mDragInfo != null) { 2087 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2088 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2089 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2090 } 2091 2092 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2093 mCreateUserFolderOnDrop = false; 2094 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 2095 2096 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2097 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2098 2099 if (aboveShortcut && willBecomeShortcut) { 2100 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2101 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2102 // if the drag started here, we need to remove it from the workspace 2103 if (!external) { 2104 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2105 } 2106 2107 Rect folderLocation = new Rect(); 2108 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2109 target.removeView(v); 2110 2111 FolderIcon fi = 2112 mLauncher.addFolder(target, container, screen, targetCell[0], targetCell[1]); 2113 destInfo.cellX = -1; 2114 destInfo.cellY = -1; 2115 sourceInfo.cellX = -1; 2116 sourceInfo.cellY = -1; 2117 2118 // If the dragView is null, we can't animate 2119 boolean animate = dragView != null; 2120 if (animate) { 2121 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2122 postAnimationRunnable); 2123 } else { 2124 fi.addItem(destInfo); 2125 fi.addItem(sourceInfo); 2126 } 2127 return true; 2128 } 2129 return false; 2130 } 2131 2132 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2133 float distance, DragObject d, boolean external) { 2134 if (distance > mMaxDistanceForFolderCreation) return false; 2135 2136 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2137 if (!mAddToExistingFolderOnDrop) return false; 2138 mAddToExistingFolderOnDrop = false; 2139 2140 if (dropOverView instanceof FolderIcon) { 2141 FolderIcon fi = (FolderIcon) dropOverView; 2142 if (fi.acceptDrop(d.dragInfo)) { 2143 fi.onDrop(d); 2144 2145 // if the drag started here, we need to remove it from the workspace 2146 if (!external) { 2147 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2148 } 2149 return true; 2150 } 2151 } 2152 return false; 2153 } 2154 2155 public void onDrop(final DragObject d) { 2156 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2157 mDragViewVisualCenter); 2158 2159 CellLayout dropTargetLayout = mDropToLayout; 2160 2161 // We want the point to be mapped to the dragTarget. 2162 if (dropTargetLayout != null) { 2163 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 2164 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2165 } else { 2166 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 2167 } 2168 } 2169 2170 int snapScreen = -1; 2171 boolean resizeOnDrop = false; 2172 if (d.dragSource != this) { 2173 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2174 (int) mDragViewVisualCenter[1] }; 2175 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2176 } else if (mDragInfo != null) { 2177 final View cell = mDragInfo.cell; 2178 2179 Runnable resizeRunnable = null; 2180 if (dropTargetLayout != null) { 2181 // Move internally 2182 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2183 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2184 long container = hasMovedIntoHotseat ? 2185 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2186 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2187 int screen = (mTargetCell[0] < 0) ? 2188 mDragInfo.screen : indexOfChild(dropTargetLayout); 2189 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2190 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2191 // First we find the cell nearest to point at which the item is 2192 // dropped, without any consideration to whether there is an item there. 2193 2194 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2195 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2196 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2197 mDragViewVisualCenter[1], mTargetCell); 2198 2199 // If the item being dropped is a shortcut and the nearest drop 2200 // cell also contains a shortcut, then create a folder with the two shortcuts. 2201 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2202 dropTargetLayout, mTargetCell, distance, false, d.dragView, null)) { 2203 return; 2204 } 2205 2206 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, 2207 distance, d, false)) { 2208 return; 2209 } 2210 2211 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2212 // we need to find the nearest cell location that is vacant 2213 ItemInfo item = (ItemInfo) d.dragInfo; 2214 int minSpanX = item.spanX; 2215 int minSpanY = item.spanY; 2216 if (item.minSpanX > 0 && item.minSpanY > 0) { 2217 minSpanX = item.minSpanX; 2218 minSpanY = item.minSpanY; 2219 } 2220 2221 int[] resultSpan = new int[2]; 2222 mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], 2223 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, cell, 2224 mTargetCell, resultSpan, CellLayout.MODE_ON_DROP); 2225 2226 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2227 if (foundCell && (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY)) { 2228 resizeOnDrop = true; 2229 item.spanX = resultSpan[0]; 2230 item.spanY = resultSpan[1]; 2231 AppWidgetHostView awhv = (AppWidgetHostView) cell; 2232 AppWidgetResizeFrame.updateWidgetSizeRanges(awhv, mLauncher, resultSpan[0], 2233 resultSpan[1]); 2234 } 2235 2236 if (mCurrentPage != screen && !hasMovedIntoHotseat) { 2237 snapScreen = screen; 2238 snapToPage(screen); 2239 } 2240 2241 if (foundCell) { 2242 final ItemInfo info = (ItemInfo) cell.getTag(); 2243 if (hasMovedLayouts) { 2244 // Reparent the view 2245 getParentCellLayoutForView(cell).removeView(cell); 2246 addInScreen(cell, container, screen, mTargetCell[0], mTargetCell[1], 2247 info.spanX, info.spanY); 2248 } 2249 2250 // update the item's position after drop 2251 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2252 lp.cellX = lp.tmpCellX = mTargetCell[0]; 2253 lp.cellY = lp.tmpCellY = mTargetCell[1]; 2254 lp.cellHSpan = item.spanX; 2255 lp.cellVSpan = item.spanY; 2256 lp.isLockedToGrid = true; 2257 cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screen, 2258 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2259 2260 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2261 cell instanceof LauncherAppWidgetHostView) { 2262 final CellLayout cellLayout = dropTargetLayout; 2263 // We post this call so that the widget has a chance to be placed 2264 // in its final location 2265 2266 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2267 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2268 if (pinfo != null && 2269 pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2270 final Runnable addResizeFrame = new Runnable() { 2271 public void run() { 2272 DragLayer dragLayer = mLauncher.getDragLayer(); 2273 dragLayer.addResizeFrame(info, hostView, cellLayout); 2274 } 2275 }; 2276 resizeRunnable = (new Runnable() { 2277 public void run() { 2278 if (!isPageMoving()) { 2279 addResizeFrame.run(); 2280 } else { 2281 mDelayedResizeRunnable = addResizeFrame; 2282 } 2283 } 2284 }); 2285 } 2286 } 2287 2288 LauncherModel.moveItemInDatabase(mLauncher, info, container, screen, lp.cellX, 2289 lp.cellY); 2290 } else { 2291 // If we can't find a drop location, we return the item to its original position 2292 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2293 mTargetCell[0] = lp.cellX; 2294 mTargetCell[1] = lp.cellY; 2295 CellLayout layout = (CellLayout) cell.getParent().getParent(); 2296 layout.markCellsAsOccupiedForView(cell); 2297 } 2298 } 2299 2300 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2301 final Runnable finalResizeRunnable = resizeRunnable; 2302 // Prepare it to be animated into its new position 2303 // This must be called after the view has been re-parented 2304 final Runnable onCompleteRunnable = new Runnable() { 2305 @Override 2306 public void run() { 2307 mAnimatingViewIntoPlace = false; 2308 updateChildrenLayersEnabled(false); 2309 if (finalResizeRunnable != null) { 2310 finalResizeRunnable.run(); 2311 } 2312 } 2313 }; 2314 mAnimatingViewIntoPlace = true; 2315 if (d.dragView.hasDrawn()) { 2316 final ItemInfo info = (ItemInfo) cell.getTag(); 2317 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET) { 2318 int animationType = resizeOnDrop ? ANIMATE_INTO_POSITION_AND_RESIZE : 2319 ANIMATE_INTO_POSITION_AND_DISAPPEAR; 2320 animateWidgetDrop(info, parent, d.dragView, 2321 onCompleteRunnable, animationType, cell, false); 2322 } else { 2323 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2324 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2325 onCompleteRunnable, this); 2326 } 2327 } else { 2328 d.deferDragViewCleanupPostAnimation = false; 2329 cell.setVisibility(VISIBLE); 2330 } 2331 parent.onDropChild(cell); 2332 } 2333 } 2334 2335 public void setFinalScrollForPageChange(int screen) { 2336 if (screen >= 0) { 2337 mSavedScrollX = getScrollX(); 2338 CellLayout cl = (CellLayout) getChildAt(screen); 2339 mSavedTranslationX = cl.getTranslationX(); 2340 mSavedRotationY = cl.getRotationY(); 2341 final int newX = getChildOffset(screen) - getRelativeChildOffset(screen); 2342 setScrollX(newX); 2343 cl.setTranslationX(0f); 2344 cl.setRotationY(0f); 2345 } 2346 } 2347 2348 public void resetFinalScrollForPageChange(int screen) { 2349 if (screen >= 0) { 2350 CellLayout cl = (CellLayout) getChildAt(screen); 2351 setScrollX(mSavedScrollX); 2352 cl.setTranslationX(mSavedTranslationX); 2353 cl.setRotationY(mSavedRotationY); 2354 } 2355 } 2356 2357 public void getViewLocationRelativeToSelf(View v, int[] location) { 2358 getLocationInWindow(location); 2359 int x = location[0]; 2360 int y = location[1]; 2361 2362 v.getLocationInWindow(location); 2363 int vX = location[0]; 2364 int vY = location[1]; 2365 2366 location[0] = vX - x; 2367 location[1] = vY - y; 2368 } 2369 2370 public void onDragEnter(DragObject d) { 2371 mDragEnforcer.onDragEnter(); 2372 mCreateUserFolderOnDrop = false; 2373 mAddToExistingFolderOnDrop = false; 2374 2375 mDropToLayout = null; 2376 CellLayout layout = getCurrentDropLayout(); 2377 setCurrentDropLayout(layout); 2378 setCurrentDragOverlappingLayout(layout); 2379 2380 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2381 // don't need to show the outlines 2382 if (LauncherApplication.isScreenLarge()) { 2383 showOutlines(); 2384 } 2385 } 2386 2387 static Rect getCellLayoutMetrics(Launcher launcher, int orientation) { 2388 Resources res = launcher.getResources(); 2389 Display display = launcher.getWindowManager().getDefaultDisplay(); 2390 Point smallestSize = new Point(); 2391 Point largestSize = new Point(); 2392 display.getCurrentSizeRange(smallestSize, largestSize); 2393 if (orientation == CellLayout.LANDSCAPE) { 2394 if (mLandscapeCellLayoutMetrics == null) { 2395 int paddingLeft = res.getDimensionPixelSize(R.dimen.workspace_left_padding_land); 2396 int paddingRight = res.getDimensionPixelSize(R.dimen.workspace_right_padding_land); 2397 int paddingTop = res.getDimensionPixelSize(R.dimen.workspace_top_padding_land); 2398 int paddingBottom = res.getDimensionPixelSize(R.dimen.workspace_bottom_padding_land); 2399 int width = largestSize.x - paddingLeft - paddingRight; 2400 int height = smallestSize.y - paddingTop - paddingBottom; 2401 mLandscapeCellLayoutMetrics = new Rect(); 2402 CellLayout.getMetrics(mLandscapeCellLayoutMetrics, res, 2403 width, height, LauncherModel.getCellCountX(), LauncherModel.getCellCountY(), 2404 orientation); 2405 } 2406 return mLandscapeCellLayoutMetrics; 2407 } else if (orientation == CellLayout.PORTRAIT) { 2408 if (mPortraitCellLayoutMetrics == null) { 2409 int paddingLeft = res.getDimensionPixelSize(R.dimen.workspace_left_padding_land); 2410 int paddingRight = res.getDimensionPixelSize(R.dimen.workspace_right_padding_land); 2411 int paddingTop = res.getDimensionPixelSize(R.dimen.workspace_top_padding_land); 2412 int paddingBottom = res.getDimensionPixelSize(R.dimen.workspace_bottom_padding_land); 2413 int width = smallestSize.x - paddingLeft - paddingRight; 2414 int height = largestSize.y - paddingTop - paddingBottom; 2415 mPortraitCellLayoutMetrics = new Rect(); 2416 CellLayout.getMetrics(mPortraitCellLayoutMetrics, res, 2417 width, height, LauncherModel.getCellCountX(), LauncherModel.getCellCountY(), 2418 orientation); 2419 } 2420 return mPortraitCellLayoutMetrics; 2421 } 2422 return null; 2423 } 2424 2425 public void onDragExit(DragObject d) { 2426 mDragEnforcer.onDragExit(); 2427 2428 // Here we store the final page that will be dropped to, if the workspace in fact 2429 // receives the drop 2430 if (mInScrollArea) { 2431 if (isPageMoving()) { 2432 // If the user drops while the page is scrolling, we should use that page as the 2433 // destination instead of the page that is being hovered over. 2434 mDropToLayout = (CellLayout) getPageAt(getNextPage()); 2435 } else { 2436 mDropToLayout = mDragOverlappingLayout; 2437 } 2438 } else { 2439 mDropToLayout = mDragTargetLayout; 2440 } 2441 2442 if (mDragMode == DRAG_MODE_CREATE_FOLDER) { 2443 mCreateUserFolderOnDrop = true; 2444 } else if (mDragMode == DRAG_MODE_ADD_TO_FOLDER) { 2445 mAddToExistingFolderOnDrop = true; 2446 } 2447 2448 // Reset the scroll area and previous drag target 2449 onResetScrollArea(); 2450 setCurrentDropLayout(null); 2451 setCurrentDragOverlappingLayout(null); 2452 2453 mSpringLoadedDragController.cancel(); 2454 2455 if (!mIsPageMoving) { 2456 hideOutlines(); 2457 } 2458 } 2459 2460 void setCurrentDropLayout(CellLayout layout) { 2461 if (mDragTargetLayout != null) { 2462 mDragTargetLayout.revertTempState(); 2463 mDragTargetLayout.onDragExit(); 2464 } 2465 mDragTargetLayout = layout; 2466 if (mDragTargetLayout != null) { 2467 mDragTargetLayout.onDragEnter(); 2468 } 2469 cleanupReorder(true); 2470 cleanupFolderCreation(); 2471 setCurrentDropOverCell(-1, -1); 2472 } 2473 2474 void setCurrentDragOverlappingLayout(CellLayout layout) { 2475 if (mDragOverlappingLayout != null) { 2476 mDragOverlappingLayout.setIsDragOverlapping(false); 2477 } 2478 mDragOverlappingLayout = layout; 2479 if (mDragOverlappingLayout != null) { 2480 mDragOverlappingLayout.setIsDragOverlapping(true); 2481 } 2482 invalidate(); 2483 } 2484 2485 void setCurrentDropOverCell(int x, int y) { 2486 if (x != mDragOverX || y != mDragOverY) { 2487 mDragOverX = x; 2488 mDragOverY = y; 2489 setDragMode(DRAG_MODE_NONE); 2490 } 2491 } 2492 2493 void setDragMode(int dragMode) { 2494 if (dragMode != mDragMode) { 2495 if (dragMode == DRAG_MODE_NONE) { 2496 cleanupAddToFolder(); 2497 // We don't want to cancel the re-order alarm every time the target cell changes 2498 // as this feels to slow / unresponsive. 2499 cleanupReorder(false); 2500 cleanupFolderCreation(); 2501 } else if (dragMode == DRAG_MODE_ADD_TO_FOLDER) { 2502 cleanupReorder(true); 2503 cleanupFolderCreation(); 2504 } else if (dragMode == DRAG_MODE_CREATE_FOLDER) { 2505 cleanupAddToFolder(); 2506 cleanupReorder(true); 2507 } else if (dragMode == DRAG_MODE_REORDER) { 2508 cleanupAddToFolder(); 2509 cleanupFolderCreation(); 2510 } 2511 mDragMode = dragMode; 2512 } 2513 } 2514 2515 private void cleanupFolderCreation() { 2516 if (mDragFolderRingAnimator != null) { 2517 mDragFolderRingAnimator.animateToNaturalState(); 2518 } 2519 mFolderCreationAlarm.cancelAlarm(); 2520 } 2521 2522 private void cleanupAddToFolder() { 2523 if (mDragOverFolderIcon != null) { 2524 mDragOverFolderIcon.onDragExit(null); 2525 mDragOverFolderIcon = null; 2526 } 2527 } 2528 2529 private void cleanupReorder(boolean cancelAlarm) { 2530 // Any pending reorders are canceled 2531 if (cancelAlarm) { 2532 mReorderAlarm.cancelAlarm(); 2533 } 2534 mLastReorderX = -1; 2535 mLastReorderY = -1; 2536 } 2537 2538 public DropTarget getDropTargetDelegate(DragObject d) { 2539 return null; 2540 } 2541 2542 /* 2543 * 2544 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2545 * coordinate space. The argument xy is modified with the return result. 2546 * 2547 */ 2548 void mapPointFromSelfToChild(View v, float[] xy) { 2549 mapPointFromSelfToChild(v, xy, null); 2550 } 2551 2552 /* 2553 * 2554 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2555 * coordinate space. The argument xy is modified with the return result. 2556 * 2557 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2558 * computing it itself; we use this to avoid redundant matrix inversions in 2559 * findMatchingPageForDragOver 2560 * 2561 */ 2562 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2563 if (cachedInverseMatrix == null) { 2564 v.getMatrix().invert(mTempInverseMatrix); 2565 cachedInverseMatrix = mTempInverseMatrix; 2566 } 2567 int scrollX = getScrollX(); 2568 if (mNextPage != INVALID_PAGE) { 2569 scrollX = mScroller.getFinalX(); 2570 } 2571 xy[0] = xy[0] + scrollX - v.getLeft(); 2572 xy[1] = xy[1] + getScrollY() - v.getTop(); 2573 cachedInverseMatrix.mapPoints(xy); 2574 } 2575 2576 /* 2577 * Maps a point from the Workspace's coordinate system to another sibling view's. (Workspace 2578 * covers the full screen) 2579 */ 2580 void mapPointFromSelfToSibling(View v, float[] xy) { 2581 xy[0] = xy[0] - v.getLeft(); 2582 xy[1] = xy[1] - v.getTop(); 2583 } 2584 2585 void mapPointFromSelfToHotseatLayout(Hotseat hotseat, float[] xy) { 2586 xy[0] = xy[0] - hotseat.getLeft() - hotseat.getLayout().getLeft(); 2587 xy[1] = xy[1] - hotseat.getTop() - hotseat.getLayout().getTop(); 2588 } 2589 2590 /* 2591 * 2592 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2593 * the parent View's coordinate space. The argument xy is modified with the return result. 2594 * 2595 */ 2596 void mapPointFromChildToSelf(View v, float[] xy) { 2597 v.getMatrix().mapPoints(xy); 2598 int scrollX = getScrollX(); 2599 if (mNextPage != INVALID_PAGE) { 2600 scrollX = mScroller.getFinalX(); 2601 } 2602 xy[0] -= (scrollX - v.getLeft()); 2603 xy[1] -= (getScrollY() - v.getTop()); 2604 } 2605 2606 static private float squaredDistance(float[] point1, float[] point2) { 2607 float distanceX = point1[0] - point2[0]; 2608 float distanceY = point2[1] - point2[1]; 2609 return distanceX * distanceX + distanceY * distanceY; 2610 } 2611 2612 /* 2613 * 2614 * Returns true if the passed CellLayout cl overlaps with dragView 2615 * 2616 */ 2617 boolean overlaps(CellLayout cl, DragView dragView, 2618 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2619 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2620 final float[] draggedItemTopLeft = mTempDragCoordinates; 2621 draggedItemTopLeft[0] = dragViewX; 2622 draggedItemTopLeft[1] = dragViewY; 2623 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2624 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2625 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2626 2627 // Transform the dragged item's top left coordinates 2628 // to the CellLayout's local coordinates 2629 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2630 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2631 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2632 2633 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2634 // Transform the dragged item's bottom right coordinates 2635 // to the CellLayout's local coordinates 2636 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2637 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2638 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2639 2640 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2641 float overlap = (overlapRegionRight - overlapRegionLeft) * 2642 (overlapRegionBottom - overlapRegionTop); 2643 if (overlap > 0) { 2644 return true; 2645 } 2646 } 2647 } 2648 return false; 2649 } 2650 2651 /* 2652 * 2653 * This method returns the CellLayout that is currently being dragged to. In order to drag 2654 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2655 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2656 * 2657 * Return null if no CellLayout is currently being dragged over 2658 * 2659 */ 2660 private CellLayout findMatchingPageForDragOver( 2661 DragView dragView, float originX, float originY, boolean exact) { 2662 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2663 // with the item being dragged and then choose the one that's closest to the touch point 2664 final int screenCount = getChildCount(); 2665 CellLayout bestMatchingScreen = null; 2666 float smallestDistSoFar = Float.MAX_VALUE; 2667 2668 for (int i = 0; i < screenCount; i++) { 2669 CellLayout cl = (CellLayout) getChildAt(i); 2670 2671 final float[] touchXy = {originX, originY}; 2672 // Transform the touch coordinates to the CellLayout's local coordinates 2673 // If the touch point is within the bounds of the cell layout, we can return immediately 2674 cl.getMatrix().invert(mTempInverseMatrix); 2675 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2676 2677 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2678 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2679 return cl; 2680 } 2681 2682 if (!exact) { 2683 // Get the center of the cell layout in screen coordinates 2684 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2685 cellLayoutCenter[0] = cl.getWidth()/2; 2686 cellLayoutCenter[1] = cl.getHeight()/2; 2687 mapPointFromChildToSelf(cl, cellLayoutCenter); 2688 2689 touchXy[0] = originX; 2690 touchXy[1] = originY; 2691 2692 // Calculate the distance between the center of the CellLayout 2693 // and the touch point 2694 float dist = squaredDistance(touchXy, cellLayoutCenter); 2695 2696 if (dist < smallestDistSoFar) { 2697 smallestDistSoFar = dist; 2698 bestMatchingScreen = cl; 2699 } 2700 } 2701 } 2702 return bestMatchingScreen; 2703 } 2704 2705 // This is used to compute the visual center of the dragView. This point is then 2706 // used to visualize drop locations and determine where to drop an item. The idea is that 2707 // the visual center represents the user's interpretation of where the item is, and hence 2708 // is the appropriate point to use when determining drop location. 2709 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2710 DragView dragView, float[] recycle) { 2711 float res[]; 2712 if (recycle == null) { 2713 res = new float[2]; 2714 } else { 2715 res = recycle; 2716 } 2717 2718 // First off, the drag view has been shifted in a way that is not represented in the 2719 // x and y values or the x/yOffsets. Here we account for that shift. 2720 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2721 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2722 2723 // These represent the visual top and left of drag view if a dragRect was provided. 2724 // If a dragRect was not provided, then they correspond to the actual view left and 2725 // top, as the dragRect is in that case taken to be the entire dragView. 2726 // R.dimen.dragViewOffsetY. 2727 int left = x - xOffset; 2728 int top = y - yOffset; 2729 2730 // In order to find the visual center, we shift by half the dragRect 2731 res[0] = left + dragView.getDragRegion().width() / 2; 2732 res[1] = top + dragView.getDragRegion().height() / 2; 2733 2734 return res; 2735 } 2736 2737 private boolean isDragWidget(DragObject d) { 2738 return (d.dragInfo instanceof LauncherAppWidgetInfo || 2739 d.dragInfo instanceof PendingAddWidgetInfo); 2740 } 2741 private boolean isExternalDragWidget(DragObject d) { 2742 return d.dragSource != this && isDragWidget(d); 2743 } 2744 2745 public void onDragOver(DragObject d) { 2746 // Skip drag over events while we are dragging over side pages 2747 if (mInScrollArea || mIsSwitchingState || mState == State.SMALL) return; 2748 2749 Rect r = new Rect(); 2750 CellLayout layout = null; 2751 ItemInfo item = (ItemInfo) d.dragInfo; 2752 2753 // Ensure that we have proper spans for the item that we are dropping 2754 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2755 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2756 d.dragView, mDragViewVisualCenter); 2757 2758 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2759 // Identify whether we have dragged over a side page 2760 if (isSmall()) { 2761 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 2762 mLauncher.getHotseat().getHitRect(r); 2763 if (r.contains(d.x, d.y)) { 2764 layout = mLauncher.getHotseat().getLayout(); 2765 } 2766 } 2767 if (layout == null) { 2768 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false); 2769 } 2770 if (layout != mDragTargetLayout) { 2771 2772 setCurrentDropLayout(layout); 2773 setCurrentDragOverlappingLayout(layout); 2774 2775 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 2776 if (isInSpringLoadedMode) { 2777 if (mLauncher.isHotseatLayout(layout)) { 2778 mSpringLoadedDragController.cancel(); 2779 } else { 2780 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2781 } 2782 } 2783 } 2784 } else { 2785 // Test to see if we are over the hotseat otherwise just use the current page 2786 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 2787 mLauncher.getHotseat().getHitRect(r); 2788 if (r.contains(d.x, d.y)) { 2789 layout = mLauncher.getHotseat().getLayout(); 2790 } 2791 } 2792 if (layout == null) { 2793 layout = getCurrentDropLayout(); 2794 } 2795 if (layout != mDragTargetLayout) { 2796 setCurrentDropLayout(layout); 2797 setCurrentDragOverlappingLayout(layout); 2798 } 2799 } 2800 2801 // Handle the drag over 2802 if (mDragTargetLayout != null) { 2803 // We want the point to be mapped to the dragTarget. 2804 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2805 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2806 } else { 2807 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2808 } 2809 2810 ItemInfo info = (ItemInfo) d.dragInfo; 2811 2812 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2813 (int) mDragViewVisualCenter[1], item.spanX, item.spanY, 2814 mDragTargetLayout, mTargetCell); 2815 2816 setCurrentDropOverCell(mTargetCell[0], mTargetCell[1]); 2817 2818 float targetCellDistance = mDragTargetLayout.getDistanceFromCell( 2819 mDragViewVisualCenter[0], mDragViewVisualCenter[1], mTargetCell); 2820 2821 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2822 mTargetCell[1]); 2823 2824 manageFolderFeedback(info, mDragTargetLayout, mTargetCell, 2825 targetCellDistance, dragOverView); 2826 2827 int minSpanX = item.spanX; 2828 int minSpanY = item.spanY; 2829 if (item.minSpanX > 0 && item.minSpanY > 0) { 2830 minSpanX = item.minSpanX; 2831 minSpanY = item.minSpanY; 2832 } 2833 2834 boolean nearestDropOccupied = mDragTargetLayout.isNearestDropLocationOccupied((int) 2835 mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], item.spanX, 2836 item.spanY, child, mTargetCell); 2837 2838 if (!nearestDropOccupied) { 2839 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2840 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2841 mTargetCell[0], mTargetCell[1], item.spanX, item.spanY, false, 2842 d.dragView.getDragVisualizeOffset(), d.dragView.getDragRegion()); 2843 } else if ((mDragMode == DRAG_MODE_NONE || mDragMode == DRAG_MODE_REORDER) 2844 && !mReorderAlarm.alarmPending() && (mLastReorderX != mTargetCell[0] || 2845 mLastReorderY != mTargetCell[1])) { 2846 2847 // Otherwise, if we aren't adding to or creating a folder and there's no pending 2848 // reorder, then we schedule a reorder 2849 ReorderAlarmListener listener = new ReorderAlarmListener(mDragViewVisualCenter, 2850 minSpanX, minSpanY, item.spanX, item.spanY, d.dragView, child); 2851 mReorderAlarm.setOnAlarmListener(listener); 2852 mReorderAlarm.setAlarm(REORDER_TIMEOUT); 2853 } 2854 2855 if (mDragMode == DRAG_MODE_CREATE_FOLDER || mDragMode == DRAG_MODE_ADD_TO_FOLDER || 2856 !nearestDropOccupied) { 2857 if (mDragTargetLayout != null) { 2858 mDragTargetLayout.revertTempState(); 2859 } 2860 } 2861 } 2862 } 2863 2864 private void manageFolderFeedback(ItemInfo info, CellLayout targetLayout, 2865 int[] targetCell, float distance, View dragOverView) { 2866 boolean userFolderPending = willCreateUserFolder(info, targetLayout, targetCell, distance, 2867 false); 2868 2869 if (mDragMode == DRAG_MODE_NONE && userFolderPending && 2870 !mFolderCreationAlarm.alarmPending()) { 2871 mFolderCreationAlarm.setOnAlarmListener(new 2872 FolderCreationAlarmListener(targetLayout, targetCell[0], targetCell[1])); 2873 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2874 return; 2875 } 2876 2877 boolean willAddToFolder = 2878 willAddToExistingUserFolder(info, targetLayout, targetCell, distance); 2879 2880 if (willAddToFolder && mDragMode == DRAG_MODE_NONE) { 2881 mDragOverFolderIcon = ((FolderIcon) dragOverView); 2882 mDragOverFolderIcon.onDragEnter(info); 2883 if (targetLayout != null) { 2884 targetLayout.clearDragOutlines(); 2885 } 2886 setDragMode(DRAG_MODE_ADD_TO_FOLDER); 2887 return; 2888 } 2889 2890 if (mDragMode == DRAG_MODE_ADD_TO_FOLDER && !willAddToFolder) { 2891 setDragMode(DRAG_MODE_NONE); 2892 } 2893 if (mDragMode == DRAG_MODE_CREATE_FOLDER && !userFolderPending) { 2894 setDragMode(DRAG_MODE_NONE); 2895 } 2896 2897 return; 2898 } 2899 2900 class FolderCreationAlarmListener implements OnAlarmListener { 2901 CellLayout layout; 2902 int cellX; 2903 int cellY; 2904 2905 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 2906 this.layout = layout; 2907 this.cellX = cellX; 2908 this.cellY = cellY; 2909 } 2910 2911 public void onAlarm(Alarm alarm) { 2912 if (mDragFolderRingAnimator == null) { 2913 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 2914 } 2915 mDragFolderRingAnimator.setCell(cellX, cellY); 2916 mDragFolderRingAnimator.setCellLayout(layout); 2917 mDragFolderRingAnimator.animateToAcceptState(); 2918 layout.showFolderAccept(mDragFolderRingAnimator); 2919 layout.clearDragOutlines(); 2920 setDragMode(DRAG_MODE_CREATE_FOLDER); 2921 } 2922 } 2923 2924 class ReorderAlarmListener implements OnAlarmListener { 2925 float[] dragViewCenter; 2926 int minSpanX, minSpanY, spanX, spanY; 2927 DragView dragView; 2928 View child; 2929 2930 public ReorderAlarmListener(float[] dragViewCenter, int minSpanX, int minSpanY, int spanX, 2931 int spanY, DragView dragView, View child) { 2932 this.dragViewCenter = dragViewCenter; 2933 this.minSpanX = minSpanX; 2934 this.minSpanY = minSpanY; 2935 this.spanX = spanX; 2936 this.spanY = spanY; 2937 this.child = child; 2938 this.dragView = dragView; 2939 } 2940 2941 public void onAlarm(Alarm alarm) { 2942 int[] resultSpan = new int[2]; 2943 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2944 (int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell); 2945 mLastReorderX = mTargetCell[0]; 2946 mLastReorderY = mTargetCell[1]; 2947 2948 mTargetCell = mDragTargetLayout.createArea((int) mDragViewVisualCenter[0], 2949 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2950 child, mTargetCell, resultSpan, CellLayout.MODE_DRAG_OVER); 2951 2952 if (mTargetCell[0] < 0 || mTargetCell[1] < 0) { 2953 mDragTargetLayout.revertTempState(); 2954 } else { 2955 setDragMode(DRAG_MODE_REORDER); 2956 } 2957 2958 boolean resize = resultSpan[0] != spanX || resultSpan[1] != spanY; 2959 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2960 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2961 mTargetCell[0], mTargetCell[1], resultSpan[0], resultSpan[1], resize, 2962 dragView.getDragVisualizeOffset(), dragView.getDragRegion()); 2963 } 2964 } 2965 2966 @Override 2967 public void getHitRect(Rect outRect) { 2968 // We want the workspace to have the whole area of the display (it will find the correct 2969 // cell layout to drop to in the existing drag/drop logic. 2970 outRect.set(0, 0, mDisplaySize.x, mDisplaySize.y); 2971 } 2972 2973 /** 2974 * Add the item specified by dragInfo to the given layout. 2975 * @return true if successful 2976 */ 2977 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2978 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2979 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2980 return true; 2981 } 2982 mLauncher.showOutOfSpaceMessage(mLauncher.isHotseatLayout(layout)); 2983 return false; 2984 } 2985 2986 private void onDropExternal(int[] touchXY, Object dragInfo, 2987 CellLayout cellLayout, boolean insertAtFirst) { 2988 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 2989 } 2990 2991 /** 2992 * Drop an item that didn't originate on one of the workspace screens. 2993 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2994 * come from another app altogether. 2995 * 2996 * NOTE: This can also be called when we are outside of a drag event, when we want 2997 * to add an item to one of the workspace screens. 2998 */ 2999 private void onDropExternal(final int[] touchXY, final Object dragInfo, 3000 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 3001 final Runnable exitSpringLoadedRunnable = new Runnable() { 3002 @Override 3003 public void run() { 3004 mLauncher.exitSpringLoadedDragModeDelayed(true, false, null); 3005 } 3006 }; 3007 3008 ItemInfo info = (ItemInfo) dragInfo; 3009 int spanX = info.spanX; 3010 int spanY = info.spanY; 3011 if (mDragInfo != null) { 3012 spanX = mDragInfo.spanX; 3013 spanY = mDragInfo.spanY; 3014 } 3015 3016 final long container = mLauncher.isHotseatLayout(cellLayout) ? 3017 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 3018 LauncherSettings.Favorites.CONTAINER_DESKTOP; 3019 final int screen = indexOfChild(cellLayout); 3020 if (!mLauncher.isHotseatLayout(cellLayout) && screen != mCurrentPage 3021 && mState != State.SPRING_LOADED) { 3022 snapToPage(screen); 3023 } 3024 3025 if (info instanceof PendingAddItemInfo) { 3026 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 3027 3028 boolean findNearestVacantCell = true; 3029 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 3030 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3031 cellLayout, mTargetCell); 3032 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3033 mDragViewVisualCenter[1], mTargetCell); 3034 if (willCreateUserFolder((ItemInfo) d.dragInfo, cellLayout, mTargetCell, 3035 distance, true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 3036 cellLayout, mTargetCell, distance)) { 3037 findNearestVacantCell = false; 3038 } 3039 } 3040 3041 final ItemInfo item = (ItemInfo) d.dragInfo; 3042 if (findNearestVacantCell) { 3043 int minSpanX = item.spanX; 3044 int minSpanY = item.spanY; 3045 if (item.minSpanX > 0 && item.minSpanY > 0) { 3046 minSpanX = item.minSpanX; 3047 minSpanY = item.minSpanY; 3048 } 3049 int[] resultSpan = new int[2]; 3050 mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], 3051 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, info.spanX, info.spanY, 3052 null, mTargetCell, resultSpan, CellLayout.MODE_ON_DROP_EXTERNAL); 3053 item.spanX = resultSpan[0]; 3054 item.spanY = resultSpan[1]; 3055 } 3056 3057 Runnable onAnimationCompleteRunnable = new Runnable() { 3058 @Override 3059 public void run() { 3060 // When dragging and dropping from customization tray, we deal with creating 3061 // widgets/shortcuts/folders in a slightly different way 3062 switch (pendingInfo.itemType) { 3063 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 3064 int span[] = new int[2]; 3065 span[0] = item.spanX; 3066 span[1] = item.spanY; 3067 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, 3068 container, screen, mTargetCell, span, null); 3069 break; 3070 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3071 mLauncher.processShortcutFromDrop(pendingInfo.componentName, 3072 container, screen, mTargetCell, null); 3073 break; 3074 default: 3075 throw new IllegalStateException("Unknown item type: " + 3076 pendingInfo.itemType); 3077 } 3078 } 3079 }; 3080 View finalView = pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET 3081 ? ((PendingAddWidgetInfo) pendingInfo).boundWidget : null; 3082 int animationStyle = ANIMATE_INTO_POSITION_AND_DISAPPEAR; 3083 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && 3084 ((PendingAddWidgetInfo) pendingInfo).info.configure != null) { 3085 animationStyle = ANIMATE_INTO_POSITION_AND_REMAIN; 3086 } 3087 animateWidgetDrop(info, cellLayout, d.dragView, onAnimationCompleteRunnable, 3088 animationStyle, finalView, true); 3089 } else { 3090 // This is for other drag/drop cases, like dragging from All Apps 3091 View view = null; 3092 3093 switch (info.itemType) { 3094 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 3095 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3096 if (info.container == NO_ID && info instanceof ApplicationInfo) { 3097 // Came from all apps -- make a copy 3098 info = new ShortcutInfo((ApplicationInfo) info); 3099 } 3100 view = mLauncher.createShortcut(R.layout.application, cellLayout, 3101 (ShortcutInfo) info); 3102 break; 3103 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 3104 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 3105 (FolderInfo) info, mIconCache); 3106 break; 3107 default: 3108 throw new IllegalStateException("Unknown item type: " + info.itemType); 3109 } 3110 3111 // First we find the cell nearest to point at which the item is 3112 // dropped, without any consideration to whether there is an item there. 3113 if (touchXY != null) { 3114 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3115 cellLayout, mTargetCell); 3116 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3117 mDragViewVisualCenter[1], mTargetCell); 3118 d.postAnimationRunnable = exitSpringLoadedRunnable; 3119 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, distance, 3120 true, d.dragView, d.postAnimationRunnable)) { 3121 return; 3122 } 3123 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, distance, d, 3124 true)) { 3125 return; 3126 } 3127 } 3128 3129 if (touchXY != null) { 3130 // when dragging and dropping, just find the closest free spot 3131 mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], 3132 (int) mDragViewVisualCenter[1], 1, 1, 1, 1, 3133 null, mTargetCell, null, CellLayout.MODE_ON_DROP_EXTERNAL); 3134 } else { 3135 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3136 } 3137 addInScreen(view, container, screen, mTargetCell[0], mTargetCell[1], info.spanX, 3138 info.spanY, insertAtFirst); 3139 cellLayout.onDropChild(view); 3140 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 3141 cellLayout.getShortcutsAndWidgets().measureChild(view); 3142 3143 3144 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, 3145 lp.cellX, lp.cellY); 3146 3147 if (d.dragView != null) { 3148 // We wrap the animation call in the temporary set and reset of the current 3149 // cellLayout to its final transform -- this means we animate the drag view to 3150 // the correct final location. 3151 setFinalTransitionTransform(cellLayout); 3152 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 3153 exitSpringLoadedRunnable); 3154 resetTransitionTransform(cellLayout); 3155 } 3156 } 3157 } 3158 3159 public Bitmap createWidgetBitmap(ItemInfo widgetInfo, View layout) { 3160 int[] unScaledSize = mLauncher.getWorkspace().estimateItemSize(widgetInfo.spanX, 3161 widgetInfo.spanY, widgetInfo, false); 3162 int visibility = layout.getVisibility(); 3163 layout.setVisibility(VISIBLE); 3164 3165 int width = MeasureSpec.makeMeasureSpec(unScaledSize[0], MeasureSpec.EXACTLY); 3166 int height = MeasureSpec.makeMeasureSpec(unScaledSize[1], MeasureSpec.EXACTLY); 3167 Bitmap b = Bitmap.createBitmap(unScaledSize[0], unScaledSize[1], 3168 Bitmap.Config.ARGB_8888); 3169 Canvas c = new Canvas(b); 3170 3171 layout.measure(width, height); 3172 layout.layout(0, 0, unScaledSize[0], unScaledSize[1]); 3173 layout.draw(c); 3174 c.setBitmap(null); 3175 layout.setVisibility(visibility); 3176 return b; 3177 } 3178 3179 private void getFinalPositionForDropAnimation(int[] loc, float[] scaleXY, 3180 DragView dragView, CellLayout layout, ItemInfo info, int[] targetCell, 3181 boolean external, boolean scale) { 3182 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 3183 // location and size on the home screen. 3184 int spanX = info.spanX; 3185 int spanY = info.spanY; 3186 3187 Rect r = estimateItemPosition(layout, info, targetCell[0], targetCell[1], spanX, spanY); 3188 loc[0] = r.left; 3189 loc[1] = r.top; 3190 3191 setFinalTransitionTransform(layout); 3192 float cellLayoutScale = 3193 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(layout, loc); 3194 resetTransitionTransform(layout); 3195 3196 float dragViewScaleX; 3197 float dragViewScaleY; 3198 if (scale) { 3199 dragViewScaleX = (1.0f * r.width()) / dragView.getMeasuredWidth(); 3200 dragViewScaleY = (1.0f * r.height()) / dragView.getMeasuredHeight(); 3201 } else { 3202 dragViewScaleX = 1f; 3203 dragViewScaleY = 1f; 3204 } 3205 3206 // The animation will scale the dragView about its center, so we need to center about 3207 // the final location. 3208 loc[0] -= (dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 3209 loc[1] -= (dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 3210 3211 scaleXY[0] = dragViewScaleX * cellLayoutScale; 3212 scaleXY[1] = dragViewScaleY * cellLayoutScale; 3213 } 3214 3215 public void animateWidgetDrop(ItemInfo info, CellLayout cellLayout, DragView dragView, 3216 final Runnable onCompleteRunnable, int animationType, final View finalView, 3217 boolean external) { 3218 Rect from = new Rect(); 3219 mLauncher.getDragLayer().getViewRectRelativeToSelf(dragView, from); 3220 3221 int[] finalPos = new int[2]; 3222 float scaleXY[] = new float[2]; 3223 boolean scalePreview = !(info instanceof PendingAddShortcutInfo); 3224 getFinalPositionForDropAnimation(finalPos, scaleXY, dragView, cellLayout, info, mTargetCell, 3225 external, scalePreview); 3226 3227 Resources res = mLauncher.getResources(); 3228 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration) - 200; 3229 3230 // In the case where we've prebound the widget, we remove it from the DragLayer 3231 if (finalView instanceof AppWidgetHostView && external) { 3232 Log.d(TAG, "6557954 Animate widget drop, final view is appWidgetHostView"); 3233 mLauncher.getDragLayer().removeView(finalView); 3234 } 3235 if ((animationType == ANIMATE_INTO_POSITION_AND_RESIZE || external) && finalView != null) { 3236 Bitmap crossFadeBitmap = createWidgetBitmap(info, finalView); 3237 dragView.setCrossFadeBitmap(crossFadeBitmap); 3238 dragView.crossFade((int) (duration * 0.8f)); 3239 } else if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && external) { 3240 scaleXY[0] = scaleXY[1] = Math.min(scaleXY[0], scaleXY[1]); 3241 } 3242 3243 DragLayer dragLayer = mLauncher.getDragLayer(); 3244 if (animationType == CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION) { 3245 mLauncher.getDragLayer().animateViewIntoPosition(dragView, finalPos, 0f, 0.1f, 0.1f, 3246 DragLayer.ANIMATION_END_DISAPPEAR, onCompleteRunnable, duration); 3247 } else { 3248 int endStyle; 3249 if (animationType == ANIMATE_INTO_POSITION_AND_REMAIN) { 3250 endStyle = DragLayer.ANIMATION_END_REMAIN_VISIBLE; 3251 } else { 3252 endStyle = DragLayer.ANIMATION_END_DISAPPEAR;; 3253 } 3254 3255 Runnable onComplete = new Runnable() { 3256 @Override 3257 public void run() { 3258 if (finalView != null) { 3259 finalView.setVisibility(VISIBLE); 3260 } 3261 if (onCompleteRunnable != null) { 3262 onCompleteRunnable.run(); 3263 } 3264 } 3265 }; 3266 dragLayer.animateViewIntoPosition(dragView, from.left, from.top, finalPos[0], 3267 finalPos[1], 1, 1, 1, scaleXY[0], scaleXY[1], onComplete, endStyle, 3268 duration, this); 3269 } 3270 } 3271 3272 public void setFinalTransitionTransform(CellLayout layout) { 3273 if (isSwitchingState()) { 3274 int index = indexOfChild(layout); 3275 mCurrentScaleX = layout.getScaleX(); 3276 mCurrentScaleY = layout.getScaleY(); 3277 mCurrentTranslationX = layout.getTranslationX(); 3278 mCurrentTranslationY = layout.getTranslationY(); 3279 mCurrentRotationY = layout.getRotationY(); 3280 layout.setScaleX(mNewScaleXs[index]); 3281 layout.setScaleY(mNewScaleYs[index]); 3282 layout.setTranslationX(mNewTranslationXs[index]); 3283 layout.setTranslationY(mNewTranslationYs[index]); 3284 layout.setRotationY(mNewRotationYs[index]); 3285 } 3286 } 3287 public void resetTransitionTransform(CellLayout layout) { 3288 if (isSwitchingState()) { 3289 mCurrentScaleX = layout.getScaleX(); 3290 mCurrentScaleY = layout.getScaleY(); 3291 mCurrentTranslationX = layout.getTranslationX(); 3292 mCurrentTranslationY = layout.getTranslationY(); 3293 mCurrentRotationY = layout.getRotationY(); 3294 layout.setScaleX(mCurrentScaleX); 3295 layout.setScaleY(mCurrentScaleY); 3296 layout.setTranslationX(mCurrentTranslationX); 3297 layout.setTranslationY(mCurrentTranslationY); 3298 layout.setRotationY(mCurrentRotationY); 3299 } 3300 } 3301 3302 /** 3303 * Return the current {@link CellLayout}, correctly picking the destination 3304 * screen while a scroll is in progress. 3305 */ 3306 public CellLayout getCurrentDropLayout() { 3307 return (CellLayout) getChildAt(getNextPage()); 3308 } 3309 3310 /** 3311 * Return the current CellInfo describing our current drag; this method exists 3312 * so that Launcher can sync this object with the correct info when the activity is created/ 3313 * destroyed 3314 * 3315 */ 3316 public CellLayout.CellInfo getDragInfo() { 3317 return mDragInfo; 3318 } 3319 3320 /** 3321 * Calculate the nearest cell where the given object would be dropped. 3322 * 3323 * pixelX and pixelY should be in the coordinate system of layout 3324 */ 3325 private int[] findNearestArea(int pixelX, int pixelY, 3326 int spanX, int spanY, CellLayout layout, int[] recycle) { 3327 return layout.findNearestArea( 3328 pixelX, pixelY, spanX, spanY, recycle); 3329 } 3330 3331 void setup(DragController dragController) { 3332 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3333 mDragController = dragController; 3334 3335 // hardware layers on children are enabled on startup, but should be disabled until 3336 // needed 3337 updateChildrenLayersEnabled(false); 3338 setWallpaperDimension(); 3339 } 3340 3341 /** 3342 * Called at the end of a drag which originated on the workspace. 3343 */ 3344 public void onDropCompleted(View target, DragObject d, boolean isFlingToDelete, 3345 boolean success) { 3346 if (success) { 3347 if (target != this) { 3348 if (mDragInfo != null) { 3349 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 3350 if (mDragInfo.cell instanceof DropTarget) { 3351 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 3352 } 3353 } 3354 } 3355 } else if (mDragInfo != null) { 3356 CellLayout cellLayout; 3357 if (mLauncher.isHotseatLayout(target)) { 3358 cellLayout = mLauncher.getHotseat().getLayout(); 3359 } else { 3360 cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3361 } 3362 cellLayout.onDropChild(mDragInfo.cell); 3363 } 3364 if (d.cancelled && mDragInfo.cell != null) { 3365 mDragInfo.cell.setVisibility(VISIBLE); 3366 } 3367 mDragOutline = null; 3368 mDragInfo = null; 3369 3370 // Hide the scrolling indicator after you pick up an item 3371 hideScrollingIndicator(false); 3372 } 3373 3374 void updateItemLocationsInDatabase(CellLayout cl) { 3375 int count = cl.getShortcutsAndWidgets().getChildCount(); 3376 3377 int screen = indexOfChild(cl); 3378 int container = Favorites.CONTAINER_DESKTOP; 3379 3380 if (mLauncher.isHotseatLayout(cl)) { 3381 screen = -1; 3382 container = Favorites.CONTAINER_HOTSEAT; 3383 } 3384 3385 for (int i = 0; i < count; i++) { 3386 View v = cl.getShortcutsAndWidgets().getChildAt(i); 3387 ItemInfo info = (ItemInfo) v.getTag(); 3388 // Null check required as the AllApps button doesn't have an item info 3389 if (info != null && info.requiresDbUpdate) { 3390 info.requiresDbUpdate = false; 3391 LauncherModel.modifyItemInDatabase(mLauncher, info, container, screen, info.cellX, 3392 info.cellY, info.spanX, info.spanY); 3393 } 3394 } 3395 } 3396 3397 @Override 3398 public boolean supportsFlingToDelete() { 3399 return true; 3400 } 3401 3402 @Override 3403 public void onFlingToDelete(DragObject d, int x, int y, PointF vec) { 3404 // Do nothing 3405 } 3406 3407 @Override 3408 public void onFlingToDeleteCompleted() { 3409 // Do nothing 3410 } 3411 3412 public boolean isDropEnabled() { 3413 return true; 3414 } 3415 3416 @Override 3417 protected void onRestoreInstanceState(Parcelable state) { 3418 super.onRestoreInstanceState(state); 3419 Launcher.setScreen(mCurrentPage); 3420 } 3421 3422 @Override 3423 public void scrollLeft() { 3424 if (!isSmall() && !mIsSwitchingState) { 3425 super.scrollLeft(); 3426 } 3427 Folder openFolder = getOpenFolder(); 3428 if (openFolder != null) { 3429 openFolder.completeDragExit(); 3430 } 3431 } 3432 3433 @Override 3434 public void scrollRight() { 3435 if (!isSmall() && !mIsSwitchingState) { 3436 super.scrollRight(); 3437 } 3438 Folder openFolder = getOpenFolder(); 3439 if (openFolder != null) { 3440 openFolder.completeDragExit(); 3441 } 3442 } 3443 3444 @Override 3445 public boolean onEnterScrollArea(int x, int y, int direction) { 3446 // Ignore the scroll area if we are dragging over the hot seat 3447 boolean isPortrait = !LauncherApplication.isScreenLandscape(getContext()); 3448 if (mLauncher.getHotseat() != null && isPortrait) { 3449 Rect r = new Rect(); 3450 mLauncher.getHotseat().getHitRect(r); 3451 if (r.contains(x, y)) { 3452 return false; 3453 } 3454 } 3455 3456 boolean result = false; 3457 if (!isSmall() && !mIsSwitchingState) { 3458 mInScrollArea = true; 3459 3460 final int page = getNextPage() + 3461 (direction == DragController.SCROLL_LEFT ? -1 : 1); 3462 3463 // We always want to exit the current layout to ensure parity of enter / exit 3464 setCurrentDropLayout(null); 3465 3466 if (0 <= page && page < getChildCount()) { 3467 CellLayout layout = (CellLayout) getChildAt(page); 3468 setCurrentDragOverlappingLayout(layout); 3469 3470 // Workspace is responsible for drawing the edge glow on adjacent pages, 3471 // so we need to redraw the workspace when this may have changed. 3472 invalidate(); 3473 result = true; 3474 } 3475 } 3476 return result; 3477 } 3478 3479 @Override 3480 public boolean onExitScrollArea() { 3481 boolean result = false; 3482 if (mInScrollArea) { 3483 invalidate(); 3484 CellLayout layout = getCurrentDropLayout(); 3485 setCurrentDropLayout(layout); 3486 setCurrentDragOverlappingLayout(layout); 3487 3488 result = true; 3489 mInScrollArea = false; 3490 } 3491 return result; 3492 } 3493 3494 private void onResetScrollArea() { 3495 setCurrentDragOverlappingLayout(null); 3496 mInScrollArea = false; 3497 } 3498 3499 /** 3500 * Returns a specific CellLayout 3501 */ 3502 CellLayout getParentCellLayoutForView(View v) { 3503 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3504 for (CellLayout layout : layouts) { 3505 if (layout.getShortcutsAndWidgets().indexOfChild(v) > -1) { 3506 return layout; 3507 } 3508 } 3509 return null; 3510 } 3511 3512 /** 3513 * Returns a list of all the CellLayouts in the workspace. 3514 */ 3515 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3516 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3517 int screenCount = getChildCount(); 3518 for (int screen = 0; screen < screenCount; screen++) { 3519 layouts.add(((CellLayout) getChildAt(screen))); 3520 } 3521 if (mLauncher.getHotseat() != null) { 3522 layouts.add(mLauncher.getHotseat().getLayout()); 3523 } 3524 return layouts; 3525 } 3526 3527 /** 3528 * We should only use this to search for specific children. Do not use this method to modify 3529 * ShortcutsAndWidgetsContainer directly. Includes ShortcutAndWidgetContainers from 3530 * the hotseat and workspace pages 3531 */ 3532 ArrayList<ShortcutAndWidgetContainer> getAllShortcutAndWidgetContainers() { 3533 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3534 new ArrayList<ShortcutAndWidgetContainer>(); 3535 int screenCount = getChildCount(); 3536 for (int screen = 0; screen < screenCount; screen++) { 3537 childrenLayouts.add(((CellLayout) getChildAt(screen)).getShortcutsAndWidgets()); 3538 } 3539 if (mLauncher.getHotseat() != null) { 3540 childrenLayouts.add(mLauncher.getHotseat().getLayout().getShortcutsAndWidgets()); 3541 } 3542 return childrenLayouts; 3543 } 3544 3545 public Folder getFolderForTag(Object tag) { 3546 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3547 getAllShortcutAndWidgetContainers(); 3548 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3549 int count = layout.getChildCount(); 3550 for (int i = 0; i < count; i++) { 3551 View child = layout.getChildAt(i); 3552 if (child instanceof Folder) { 3553 Folder f = (Folder) child; 3554 if (f.getInfo() == tag && f.getInfo().opened) { 3555 return f; 3556 } 3557 } 3558 } 3559 } 3560 return null; 3561 } 3562 3563 public View getViewForTag(Object tag) { 3564 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3565 getAllShortcutAndWidgetContainers(); 3566 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3567 int count = layout.getChildCount(); 3568 for (int i = 0; i < count; i++) { 3569 View child = layout.getChildAt(i); 3570 if (child.getTag() == tag) { 3571 return child; 3572 } 3573 } 3574 } 3575 return null; 3576 } 3577 3578 void clearDropTargets() { 3579 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3580 getAllShortcutAndWidgetContainers(); 3581 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3582 int childCount = layout.getChildCount(); 3583 for (int j = 0; j < childCount; j++) { 3584 View v = layout.getChildAt(j); 3585 if (v instanceof DropTarget) { 3586 mDragController.removeDropTarget((DropTarget) v); 3587 } 3588 } 3589 } 3590 } 3591 3592 void removeItems(final ArrayList<String> packages) { 3593 final HashSet<String> packageNames = new HashSet<String>(); 3594 packageNames.addAll(packages); 3595 3596 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3597 for (final CellLayout layoutParent: cellLayouts) { 3598 final ViewGroup layout = layoutParent.getShortcutsAndWidgets(); 3599 3600 // Avoid ANRs by treating each screen separately 3601 post(new Runnable() { 3602 public void run() { 3603 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3604 childrenToRemove.clear(); 3605 3606 int childCount = layout.getChildCount(); 3607 for (int j = 0; j < childCount; j++) { 3608 final View view = layout.getChildAt(j); 3609 Object tag = view.getTag(); 3610 3611 if (tag instanceof ShortcutInfo) { 3612 final ShortcutInfo info = (ShortcutInfo) tag; 3613 final Intent intent = info.intent; 3614 final ComponentName name = intent.getComponent(); 3615 3616 if (name != null) { 3617 if (packageNames.contains(name.getPackageName())) { 3618 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3619 childrenToRemove.add(view); 3620 } 3621 } 3622 } else if (tag instanceof FolderInfo) { 3623 final FolderInfo info = (FolderInfo) tag; 3624 final ArrayList<ShortcutInfo> contents = info.contents; 3625 final int contentsCount = contents.size(); 3626 final ArrayList<ShortcutInfo> appsToRemoveFromFolder = 3627 new ArrayList<ShortcutInfo>(); 3628 3629 for (int k = 0; k < contentsCount; k++) { 3630 final ShortcutInfo appInfo = contents.get(k); 3631 final Intent intent = appInfo.intent; 3632 final ComponentName name = intent.getComponent(); 3633 3634 if (name != null) { 3635 if (packageNames.contains(name.getPackageName())) { 3636 appsToRemoveFromFolder.add(appInfo); 3637 } 3638 } 3639 } 3640 for (ShortcutInfo item: appsToRemoveFromFolder) { 3641 info.remove(item); 3642 LauncherModel.deleteItemFromDatabase(mLauncher, item); 3643 } 3644 } else if (tag instanceof LauncherAppWidgetInfo) { 3645 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3646 final ComponentName provider = info.providerName; 3647 if (provider != null) { 3648 if (packageNames.contains(provider.getPackageName())) { 3649 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3650 childrenToRemove.add(view); 3651 } 3652 } 3653 } 3654 } 3655 3656 childCount = childrenToRemove.size(); 3657 for (int j = 0; j < childCount; j++) { 3658 View child = childrenToRemove.get(j); 3659 // Note: We can not remove the view directly from CellLayoutChildren as this 3660 // does not re-mark the spaces as unoccupied. 3661 layoutParent.removeViewInLayout(child); 3662 if (child instanceof DropTarget) { 3663 mDragController.removeDropTarget((DropTarget)child); 3664 } 3665 } 3666 3667 if (childCount > 0) { 3668 layout.requestLayout(); 3669 layout.invalidate(); 3670 } 3671 } 3672 }); 3673 } 3674 3675 // Clean up new-apps animation list 3676 post(new Runnable() { 3677 @Override 3678 public void run() { 3679 String spKey = LauncherApplication.getSharedPreferencesKey(); 3680 SharedPreferences sp = getContext().getSharedPreferences(spKey, 3681 Context.MODE_PRIVATE); 3682 Set<String> newApps = sp.getStringSet(InstallShortcutReceiver.NEW_APPS_LIST_KEY, 3683 null); 3684 3685 // Remove all queued items that match the same package 3686 if (newApps != null) { 3687 synchronized (newApps) { 3688 Iterator<String> iter = newApps.iterator(); 3689 while (iter.hasNext()) { 3690 try { 3691 Intent intent = Intent.parseUri(iter.next(), 0); 3692 String pn = ItemInfo.getPackageName(intent); 3693 if (packageNames.contains(pn)) { 3694 iter.remove(); 3695 } 3696 } catch (URISyntaxException e) {} 3697 } 3698 } 3699 } 3700 } 3701 }); 3702 } 3703 3704 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3705 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = getAllShortcutAndWidgetContainers(); 3706 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3707 int childCount = layout.getChildCount(); 3708 for (int j = 0; j < childCount; j++) { 3709 final View view = layout.getChildAt(j); 3710 Object tag = view.getTag(); 3711 if (tag instanceof ShortcutInfo) { 3712 ShortcutInfo info = (ShortcutInfo) tag; 3713 // We need to check for ACTION_MAIN otherwise getComponent() might 3714 // return null for some shortcuts (for instance, for shortcuts to 3715 // web pages.) 3716 final Intent intent = info.intent; 3717 final ComponentName name = intent.getComponent(); 3718 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3719 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3720 final int appCount = apps.size(); 3721 for (int k = 0; k < appCount; k++) { 3722 ApplicationInfo app = apps.get(k); 3723 if (app.componentName.equals(name)) { 3724 BubbleTextView shortcut = (BubbleTextView) view; 3725 info.updateIcon(mIconCache); 3726 info.title = app.title.toString(); 3727 shortcut.applyFromShortcutInfo(info, mIconCache); 3728 } 3729 } 3730 } 3731 } 3732 } 3733 } 3734 } 3735 3736 void moveToDefaultScreen(boolean animate) { 3737 if (!isSmall()) { 3738 if (animate) { 3739 snapToPage(mDefaultPage); 3740 } else { 3741 setCurrentPage(mDefaultPage); 3742 } 3743 } 3744 getChildAt(mDefaultPage).requestFocus(); 3745 } 3746 3747 @Override 3748 public void syncPages() { 3749 } 3750 3751 @Override 3752 public void syncPageItems(int page, boolean immediate) { 3753 } 3754 3755 @Override 3756 protected String getCurrentPageDescription() { 3757 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 3758 return String.format(getContext().getString(R.string.workspace_scroll_format), 3759 page + 1, getChildCount()); 3760 } 3761 3762 public void getLocationInDragLayer(int[] loc) { 3763 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 3764 } 3765 3766 void setFadeForOverScroll(float fade) { 3767 if (!isScrollingIndicatorEnabled()) return; 3768 3769 mOverscrollFade = fade; 3770 float reducedFade = 0.5f + 0.5f * (1 - fade); 3771 final ViewGroup parent = (ViewGroup) getParent(); 3772 final ImageView qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3773 final ImageView dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3774 final View scrollIndicator = getScrollingIndicator(); 3775 3776 cancelScrollingIndicatorAnimations(); 3777 if (qsbDivider != null) qsbDivider.setAlpha(reducedFade); 3778 if (dockDivider != null) dockDivider.setAlpha(reducedFade); 3779 scrollIndicator.setAlpha(1 - fade); 3780 } 3781} 3782