Workspace.java revision ce3cbd145b4222779abae32869da8dd3c2aefb67
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.launcher2; 18 19import android.animation.Animator; 20import android.animation.AnimatorSet; 21import android.animation.ObjectAnimator; 22import android.animation.TimeInterpolator; 23import android.animation.ValueAnimator; 24import android.animation.ValueAnimator.AnimatorUpdateListener; 25import android.app.WallpaperManager; 26import android.appwidget.AppWidgetHostView; 27import android.appwidget.AppWidgetProviderInfo; 28import android.content.ComponentName; 29import android.content.Context; 30import android.content.Intent; 31import android.content.SharedPreferences; 32import android.content.res.Resources; 33import android.content.res.TypedArray; 34import android.graphics.Bitmap; 35import android.graphics.Canvas; 36import android.graphics.Matrix; 37import android.graphics.Point; 38import android.graphics.PointF; 39import android.graphics.Rect; 40import android.graphics.Region.Op; 41import android.graphics.drawable.Drawable; 42import android.os.IBinder; 43import android.os.Parcelable; 44import android.util.AttributeSet; 45import android.util.Log; 46import android.util.SparseArray; 47import android.view.Display; 48import android.view.MotionEvent; 49import android.view.View; 50import android.view.ViewGroup; 51import android.view.animation.DecelerateInterpolator; 52import android.widget.ImageView; 53import android.widget.TextView; 54 55import com.android.launcher.R; 56import com.android.launcher2.FolderIcon.FolderRingAnimator; 57import com.android.launcher2.LauncherSettings.Favorites; 58 59import java.net.URISyntaxException; 60import java.util.ArrayList; 61import java.util.HashSet; 62import java.util.Iterator; 63import java.util.Set; 64 65/** 66 * The workspace is a wide area with a wallpaper and a finite number of pages. 67 * Each page contains a number of icons, folders or widgets the user can 68 * interact with. A workspace is meant to be used with a fixed width only. 69 */ 70public class Workspace extends SmoothPagedView 71 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 72 DragController.DragListener, LauncherTransitionable, ViewGroup.OnHierarchyChangeListener { 73 private static final String TAG = "Launcher.Workspace"; 74 75 // Y rotation to apply to the workspace screens 76 private static final float WORKSPACE_OVERSCROLL_ROTATION = 24f; 77 78 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 79 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 80 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 81 82 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 83 private static final int ADJACENT_SCREEN_DROP_DURATION = 300; 84 private static final int FLING_THRESHOLD_VELOCITY = 500; 85 86 // These animators are used to fade the children's outlines 87 private ObjectAnimator mChildrenOutlineFadeInAnimation; 88 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 89 private float mChildrenOutlineAlpha = 0; 90 91 // These properties refer to the background protection gradient used for AllApps and Customize 92 private ValueAnimator mBackgroundFadeInAnimation; 93 private ValueAnimator mBackgroundFadeOutAnimation; 94 private Drawable mBackground; 95 boolean mDrawBackground = true; 96 private float mBackgroundAlpha = 0; 97 private float mOverScrollMaxBackgroundAlpha = 0.0f; 98 99 private float mWallpaperScrollRatio = 1.0f; 100 private int mOriginalPageSpacing; 101 102 private final WallpaperManager mWallpaperManager; 103 private IBinder mWindowToken; 104 private static final float WALLPAPER_SCREENS_SPAN = 2f; 105 106 private int mDefaultPage; 107 108 /** 109 * CellInfo for the cell that is currently being dragged 110 */ 111 private CellLayout.CellInfo mDragInfo; 112 113 /** 114 * Target drop area calculated during last acceptDrop call. 115 */ 116 private int[] mTargetCell = new int[2]; 117 private int mDragOverX = -1; 118 private int mDragOverY = -1; 119 120 static Rect mLandscapeCellLayoutMetrics = null; 121 static Rect mPortraitCellLayoutMetrics = null; 122 123 /** 124 * The CellLayout that is currently being dragged over 125 */ 126 private CellLayout mDragTargetLayout = null; 127 /** 128 * The CellLayout that we will show as glowing 129 */ 130 private CellLayout mDragOverlappingLayout = null; 131 132 /** 133 * The CellLayout which will be dropped to 134 */ 135 private CellLayout mDropToLayout = null; 136 137 private Launcher mLauncher; 138 private IconCache mIconCache; 139 private DragController mDragController; 140 141 // These are temporary variables to prevent having to allocate a new object just to 142 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 143 private int[] mTempCell = new int[2]; 144 private int[] mTempEstimate = new int[2]; 145 private float[] mDragViewVisualCenter = new float[2]; 146 private float[] mTempDragCoordinates = new float[2]; 147 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 148 private float[] mTempDragBottomRightCoordinates = new float[2]; 149 private Matrix mTempInverseMatrix = new Matrix(); 150 151 private SpringLoadedDragController mSpringLoadedDragController; 152 private float mSpringLoadedShrinkFactor; 153 154 private static final int DEFAULT_CELL_COUNT_X = 4; 155 private static final int DEFAULT_CELL_COUNT_Y = 4; 156 157 // State variable that indicates whether the pages are small (ie when you're 158 // in all apps or customize mode) 159 160 enum State { NORMAL, SPRING_LOADED, SMALL }; 161 private State mState = State.NORMAL; 162 private boolean mIsSwitchingState = false; 163 164 boolean mAnimatingViewIntoPlace = false; 165 boolean mIsDragOccuring = false; 166 boolean mChildrenLayersEnabled = true; 167 168 /** Is the user is dragging an item near the edge of a page? */ 169 private boolean mInScrollArea = false; 170 171 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 172 private Bitmap mDragOutline = null; 173 private final Rect mTempRect = new Rect(); 174 private final int[] mTempXY = new int[2]; 175 private int[] mTempVisiblePagesRange = new int[2]; 176 private float mOverscrollFade = 0; 177 private boolean mOverscrollTransformsSet; 178 public static final int DRAG_BITMAP_PADDING = 2; 179 private boolean mWorkspaceFadeInAdjacentScreens; 180 181 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 182 int mWallpaperWidth; 183 int mWallpaperHeight; 184 WallpaperOffsetInterpolator mWallpaperOffset; 185 boolean mUpdateWallpaperOffsetImmediately = false; 186 private Runnable mDelayedResizeRunnable; 187 private Runnable mDelayedSnapToPageRunnable; 188 private Point mDisplaySize = new Point(); 189 private boolean mIsStaticWallpaper; 190 private int mWallpaperTravelWidth; 191 private int mSpringLoadedPageSpacing; 192 private int mCameraDistance; 193 194 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 195 private static final int FOLDER_CREATION_TIMEOUT = 0; 196 private static final int REORDER_TIMEOUT = 250; 197 private final Alarm mFolderCreationAlarm = new Alarm(); 198 private final Alarm mReorderAlarm = new Alarm(); 199 private FolderRingAnimator mDragFolderRingAnimator = null; 200 private FolderIcon mDragOverFolderIcon = null; 201 private boolean mCreateUserFolderOnDrop = false; 202 private boolean mAddToExistingFolderOnDrop = false; 203 private DropTarget.DragEnforcer mDragEnforcer; 204 private float mMaxDistanceForFolderCreation; 205 206 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 207 private float mXDown; 208 private float mYDown; 209 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 210 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 211 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 212 213 // Relating to the animation of items being dropped externally 214 public static final int ANIMATE_INTO_POSITION_AND_DISAPPEAR = 0; 215 public static final int ANIMATE_INTO_POSITION_AND_REMAIN = 1; 216 public static final int ANIMATE_INTO_POSITION_AND_RESIZE = 2; 217 public static final int COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION = 3; 218 public static final int CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION = 4; 219 220 // Related to dragging, folder creation and reordering 221 private static final int DRAG_MODE_NONE = 0; 222 private static final int DRAG_MODE_CREATE_FOLDER = 1; 223 private static final int DRAG_MODE_ADD_TO_FOLDER = 2; 224 private static final int DRAG_MODE_REORDER = 3; 225 private int mDragMode = DRAG_MODE_NONE; 226 private int mLastReorderX = -1; 227 private int mLastReorderY = -1; 228 229 private SparseArray<Parcelable> mSavedStates; 230 private final ArrayList<Integer> mRestoredPages = new ArrayList<Integer>(); 231 232 // These variables are used for storing the initial and final values during workspace animations 233 private int mSavedScrollX; 234 private float mSavedRotationY; 235 private float mSavedTranslationX; 236 private float mCurrentScaleX; 237 private float mCurrentScaleY; 238 private float mCurrentRotationY; 239 private float mCurrentTranslationX; 240 private float mCurrentTranslationY; 241 private float[] mOldTranslationXs; 242 private float[] mOldTranslationYs; 243 private float[] mOldScaleXs; 244 private float[] mOldScaleYs; 245 private float[] mOldBackgroundAlphas; 246 private float[] mOldAlphas; 247 private float[] mNewTranslationXs; 248 private float[] mNewTranslationYs; 249 private float[] mNewScaleXs; 250 private float[] mNewScaleYs; 251 private float[] mNewBackgroundAlphas; 252 private float[] mNewAlphas; 253 private float[] mNewRotationYs; 254 private float mTransitionProgress; 255 256 private final Runnable mBindPages = new Runnable() { 257 @Override 258 public void run() { 259 mLauncher.getModel().bindRemainingSynchronousPages(); 260 } 261 }; 262 263 /** 264 * Used to inflate the Workspace from XML. 265 * 266 * @param context The application's context. 267 * @param attrs The attributes set containing the Workspace's customization values. 268 */ 269 public Workspace(Context context, AttributeSet attrs) { 270 this(context, attrs, 0); 271 } 272 273 /** 274 * Used to inflate the Workspace from XML. 275 * 276 * @param context The application's context. 277 * @param attrs The attributes set containing the Workspace's customization values. 278 * @param defStyle Unused. 279 */ 280 public Workspace(Context context, AttributeSet attrs, int defStyle) { 281 super(context, attrs, defStyle); 282 mContentIsRefreshable = false; 283 mOriginalPageSpacing = mPageSpacing; 284 285 mDragEnforcer = new DropTarget.DragEnforcer(context); 286 // With workspace, data is available straight from the get-go 287 setDataIsReady(); 288 289 mLauncher = (Launcher) context; 290 final Resources res = getResources(); 291 mWorkspaceFadeInAdjacentScreens = res.getBoolean(R.bool.config_workspaceFadeAdjacentScreens); 292 mFadeInAdjacentScreens = false; 293 mWallpaperManager = WallpaperManager.getInstance(context); 294 295 int cellCountX = DEFAULT_CELL_COUNT_X; 296 int cellCountY = DEFAULT_CELL_COUNT_Y; 297 298 TypedArray a = context.obtainStyledAttributes(attrs, 299 R.styleable.Workspace, defStyle, 0); 300 301 if (LauncherApplication.isScreenLarge()) { 302 // Determine number of rows/columns dynamically 303 // TODO: This code currently fails on tablets with an aspect ratio < 1.3. 304 // Around that ratio we should make cells the same size in portrait and 305 // landscape 306 TypedArray actionBarSizeTypedArray = 307 context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize }); 308 final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); 309 310 Point minDims = new Point(); 311 Point maxDims = new Point(); 312 mLauncher.getWindowManager().getDefaultDisplay().getCurrentSizeRange(minDims, maxDims); 313 314 cellCountX = 1; 315 while (CellLayout.widthInPortrait(res, cellCountX + 1) <= minDims.x) { 316 cellCountX++; 317 } 318 319 cellCountY = 1; 320 while (actionBarHeight + CellLayout.heightInLandscape(res, cellCountY + 1) 321 <= minDims.y) { 322 cellCountY++; 323 } 324 } 325 326 mSpringLoadedShrinkFactor = 327 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 328 mSpringLoadedPageSpacing = 329 res.getDimensionPixelSize(R.dimen.workspace_spring_loaded_page_spacing); 330 mCameraDistance = res.getInteger(R.integer.config_cameraDistance); 331 332 // if the value is manually specified, use that instead 333 cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX); 334 cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY); 335 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 336 a.recycle(); 337 338 setOnHierarchyChangeListener(this); 339 340 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 341 setHapticFeedbackEnabled(false); 342 343 initWorkspace(); 344 345 // Disable multitouch across the workspace/all apps/customize tray 346 setMotionEventSplittingEnabled(true); 347 348 // Unless otherwise specified this view is important for accessibility. 349 if (getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 350 setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 351 } 352 } 353 354 // estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each 355 // dimension if unsuccessful 356 public int[] estimateItemSize(int hSpan, int vSpan, 357 ItemInfo itemInfo, boolean springLoaded) { 358 int[] size = new int[2]; 359 if (getChildCount() > 0) { 360 CellLayout cl = (CellLayout) mLauncher.getWorkspace().getChildAt(0); 361 Rect r = estimateItemPosition(cl, itemInfo, 0, 0, hSpan, vSpan); 362 size[0] = r.width(); 363 size[1] = r.height(); 364 if (springLoaded) { 365 size[0] *= mSpringLoadedShrinkFactor; 366 size[1] *= mSpringLoadedShrinkFactor; 367 } 368 return size; 369 } else { 370 size[0] = Integer.MAX_VALUE; 371 size[1] = Integer.MAX_VALUE; 372 return size; 373 } 374 } 375 public Rect estimateItemPosition(CellLayout cl, ItemInfo pendingInfo, 376 int hCell, int vCell, int hSpan, int vSpan) { 377 Rect r = new Rect(); 378 cl.cellToRect(hCell, vCell, hSpan, vSpan, r); 379 return r; 380 } 381 382 public void onDragStart(DragSource source, Object info, int dragAction) { 383 mIsDragOccuring = true; 384 updateChildrenLayersEnabled(false); 385 mLauncher.lockScreenOrientation(); 386 setChildrenBackgroundAlphaMultipliers(1f); 387 // Prevent any Un/InstallShortcutReceivers from updating the db while we are dragging 388 InstallShortcutReceiver.enableInstallQueue(); 389 UninstallShortcutReceiver.enableUninstallQueue(); 390 } 391 392 public void onDragEnd() { 393 mIsDragOccuring = false; 394 updateChildrenLayersEnabled(false); 395 mLauncher.unlockScreenOrientation(false); 396 397 // Re-enable any Un/InstallShortcutReceiver and now process any queued items 398 InstallShortcutReceiver.disableAndFlushInstallQueue(getContext()); 399 UninstallShortcutReceiver.disableAndFlushUninstallQueue(getContext()); 400 } 401 402 /** 403 * Initializes various states for this workspace. 404 */ 405 protected void initWorkspace() { 406 Context context = getContext(); 407 mCurrentPage = mDefaultPage; 408 Launcher.setScreen(mCurrentPage); 409 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 410 mIconCache = app.getIconCache(); 411 setWillNotDraw(false); 412 setClipChildren(false); 413 setClipToPadding(false); 414 setChildrenDrawnWithCacheEnabled(true); 415 416 final Resources res = getResources(); 417 try { 418 mBackground = res.getDrawable(R.drawable.apps_customize_bg); 419 } catch (Resources.NotFoundException e) { 420 // In this case, we will skip drawing background protection 421 } 422 423 mWallpaperOffset = new WallpaperOffsetInterpolator(); 424 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 425 display.getSize(mDisplaySize); 426 mWallpaperTravelWidth = (int) (mDisplaySize.x * 427 wallpaperTravelToScreenWidthRatio(mDisplaySize.x, mDisplaySize.y)); 428 429 mMaxDistanceForFolderCreation = (0.55f * res.getDimensionPixelSize(R.dimen.app_icon_size)); 430 mFlingThresholdVelocity = (int) (FLING_THRESHOLD_VELOCITY * mDensity); 431 } 432 433 @Override 434 protected int getScrollMode() { 435 return SmoothPagedView.X_LARGE_MODE; 436 } 437 438 @Override 439 public void onChildViewAdded(View parent, View child) { 440 if (!(child instanceof CellLayout)) { 441 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 442 } 443 CellLayout cl = ((CellLayout) child); 444 cl.setOnInterceptTouchListener(this); 445 cl.setClickable(true); 446 cl.setContentDescription(getContext().getString( 447 R.string.workspace_description_format, getChildCount())); 448 } 449 450 @Override 451 public void onChildViewRemoved(View parent, View child) { 452 } 453 454 protected boolean shouldDrawChild(View child) { 455 final CellLayout cl = (CellLayout) child; 456 return super.shouldDrawChild(child) && 457 (cl.getShortcutsAndWidgets().getAlpha() > 0 || 458 cl.getBackgroundAlpha() > 0); 459 } 460 461 /** 462 * @return The open folder on the current screen, or null if there is none 463 */ 464 Folder getOpenFolder() { 465 DragLayer dragLayer = mLauncher.getDragLayer(); 466 int count = dragLayer.getChildCount(); 467 for (int i = 0; i < count; i++) { 468 View child = dragLayer.getChildAt(i); 469 if (child instanceof Folder) { 470 Folder folder = (Folder) child; 471 if (folder.getInfo().opened) 472 return folder; 473 } 474 } 475 return null; 476 } 477 478 boolean isTouchActive() { 479 return mTouchState != TOUCH_STATE_REST; 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 */ 493 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY) { 494 addInScreen(child, container, screen, x, y, spanX, spanY, false); 495 } 496 497 /** 498 * Adds the specified child in the specified screen. The position and dimension of 499 * the child are defined by x, y, spanX and spanY. 500 * 501 * @param child The child to add in one of the workspace's screens. 502 * @param screen The screen in which to add the child. 503 * @param x The X position of the child in the screen's grid. 504 * @param y The Y position of the child in the screen's grid. 505 * @param spanX The number of cells spanned horizontally by the child. 506 * @param spanY The number of cells spanned vertically by the child. 507 * @param insert When true, the child is inserted at the beginning of the children list. 508 */ 509 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY, 510 boolean insert) { 511 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 512 if (screen < 0 || screen >= getChildCount()) { 513 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 514 + " (was " + screen + "); skipping child"); 515 return; 516 } 517 } 518 519 final CellLayout layout; 520 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 521 layout = mLauncher.getHotseat().getLayout(); 522 child.setOnKeyListener(null); 523 524 // Hide folder title in the hotseat 525 if (child instanceof FolderIcon) { 526 ((FolderIcon) child).setTextVisible(false); 527 } 528 529 if (screen < 0) { 530 screen = mLauncher.getHotseat().getOrderInHotseat(x, y); 531 } else { 532 // Note: We do this to ensure that the hotseat is always laid out in the orientation 533 // of the hotseat in order regardless of which orientation they were added 534 x = mLauncher.getHotseat().getCellXFromOrder(screen); 535 y = mLauncher.getHotseat().getCellYFromOrder(screen); 536 } 537 } else { 538 // Show folder title if not in the hotseat 539 if (child instanceof FolderIcon) { 540 ((FolderIcon) child).setTextVisible(true); 541 } 542 543 layout = (CellLayout) getChildAt(screen); 544 child.setOnKeyListener(new IconKeyEventListener()); 545 } 546 547 LayoutParams genericLp = child.getLayoutParams(); 548 CellLayout.LayoutParams lp; 549 if (genericLp == null || !(genericLp instanceof CellLayout.LayoutParams)) { 550 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 551 } else { 552 lp = (CellLayout.LayoutParams) genericLp; 553 lp.cellX = x; 554 lp.cellY = y; 555 lp.cellHSpan = spanX; 556 lp.cellVSpan = spanY; 557 } 558 559 if (spanX < 0 && spanY < 0) { 560 lp.isLockedToGrid = false; 561 } 562 563 // Get the canonical child id to uniquely represent this view in this screen 564 int childId = LauncherModel.getCellLayoutChildId(container, screen, x, y, spanX, spanY); 565 boolean markCellsAsOccupied = !(child instanceof Folder); 566 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 567 // TODO: This branch occurs when the workspace is adding views 568 // outside of the defined grid 569 // maybe we should be deleting these items from the LauncherModel? 570 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 571 } 572 573 if (!(child instanceof Folder)) { 574 child.setHapticFeedbackEnabled(false); 575 child.setOnLongClickListener(mLongClickListener); 576 } 577 if (child instanceof DropTarget) { 578 mDragController.addDropTarget((DropTarget) child); 579 } 580 } 581 582 /** 583 * Check if the point (x, y) hits a given page. 584 */ 585 private boolean hitsPage(int index, float x, float y) { 586 final View page = getChildAt(index); 587 if (page != null) { 588 float[] localXY = { x, y }; 589 mapPointFromSelfToChild(page, localXY); 590 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 591 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 592 } 593 return false; 594 } 595 596 @Override 597 protected boolean hitsPreviousPage(float x, float y) { 598 // mNextPage is set to INVALID_PAGE whenever we are stationary. 599 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 600 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 601 602 // Only allow tap to next page on large devices, where there's significant margin outside 603 // the active workspace 604 return LauncherApplication.isScreenLarge() && hitsPage(current - 1, x, y); 605 } 606 607 @Override 608 protected boolean hitsNextPage(float x, float y) { 609 // mNextPage is set to INVALID_PAGE whenever we are stationary. 610 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 611 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 612 613 // Only allow tap to next page on large devices, where there's significant margin outside 614 // the active workspace 615 return LauncherApplication.isScreenLarge() && hitsPage(current + 1, x, y); 616 } 617 618 /** 619 * Called directly from a CellLayout (not by the framework), after we've been added as a 620 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 621 * that it should intercept touch events, which is not something that is normally supported. 622 */ 623 @Override 624 public boolean onTouch(View v, MotionEvent event) { 625 return (isSmall() || !isFinishedSwitchingState()); 626 } 627 628 public boolean isSwitchingState() { 629 return mIsSwitchingState; 630 } 631 632 /** This differs from isSwitchingState in that we take into account how far the transition 633 * has completed. */ 634 public boolean isFinishedSwitchingState() { 635 return !mIsSwitchingState || (mTransitionProgress > 0.5f); 636 } 637 638 protected void onWindowVisibilityChanged (int visibility) { 639 mLauncher.onWindowVisibilityChanged(visibility); 640 } 641 642 @Override 643 public boolean dispatchUnhandledMove(View focused, int direction) { 644 if (isSmall() || !isFinishedSwitchingState()) { 645 // when the home screens are shrunken, shouldn't allow side-scrolling 646 return false; 647 } 648 return super.dispatchUnhandledMove(focused, direction); 649 } 650 651 @Override 652 public boolean onInterceptTouchEvent(MotionEvent ev) { 653 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 654 case MotionEvent.ACTION_DOWN: 655 mXDown = ev.getX(); 656 mYDown = ev.getY(); 657 break; 658 case MotionEvent.ACTION_POINTER_UP: 659 case MotionEvent.ACTION_UP: 660 if (mTouchState == TOUCH_STATE_REST) { 661 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 662 if (!currentPage.lastDownOnOccupiedCell()) { 663 onWallpaperTap(ev); 664 } 665 } 666 } 667 return super.onInterceptTouchEvent(ev); 668 } 669 670 protected void reinflateWidgetsIfNecessary() { 671 final int clCount = getChildCount(); 672 for (int i = 0; i < clCount; i++) { 673 CellLayout cl = (CellLayout) getChildAt(i); 674 ShortcutAndWidgetContainer swc = cl.getShortcutsAndWidgets(); 675 final int itemCount = swc.getChildCount(); 676 for (int j = 0; j < itemCount; j++) { 677 View v = swc.getChildAt(j); 678 679 if (v.getTag() instanceof LauncherAppWidgetInfo) { 680 LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) v.getTag(); 681 LauncherAppWidgetHostView lahv = (LauncherAppWidgetHostView) info.hostView; 682 if (lahv != null && lahv.orientationChangedSincedInflation()) { 683 mLauncher.removeAppWidget(info); 684 // Remove the current widget which is inflated with the wrong orientation 685 cl.removeView(lahv); 686 mLauncher.bindAppWidget(info); 687 } 688 } 689 } 690 } 691 } 692 693 @Override 694 protected void determineScrollingStart(MotionEvent ev) { 695 if (isSmall()) return; 696 if (!isFinishedSwitchingState()) return; 697 698 float deltaX = Math.abs(ev.getX() - mXDown); 699 float deltaY = Math.abs(ev.getY() - mYDown); 700 701 if (Float.compare(deltaX, 0f) == 0) return; 702 703 float slope = deltaY / deltaX; 704 float theta = (float) Math.atan(slope); 705 706 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 707 cancelCurrentPageLongPress(); 708 } 709 710 if (theta > MAX_SWIPE_ANGLE) { 711 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 712 return; 713 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 714 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 715 // increase the touch slop to make it harder to begin scrolling the workspace. This 716 // results in vertically scrolling widgets to more easily. The higher the angle, the 717 // more we increase touch slop. 718 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 719 float extraRatio = (float) 720 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 721 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 722 } else { 723 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 724 super.determineScrollingStart(ev); 725 } 726 } 727 728 protected void onPageBeginMoving() { 729 super.onPageBeginMoving(); 730 731 if (isHardwareAccelerated()) { 732 updateChildrenLayersEnabled(false); 733 } else { 734 if (mNextPage != INVALID_PAGE) { 735 // we're snapping to a particular screen 736 enableChildrenCache(mCurrentPage, mNextPage); 737 } else { 738 // this is when user is actively dragging a particular screen, they might 739 // swipe it either left or right (but we won't advance by more than one screen) 740 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 741 } 742 } 743 744 // Only show page outlines as we pan if we are on large screen 745 if (LauncherApplication.isScreenLarge()) { 746 showOutlines(); 747 mIsStaticWallpaper = mWallpaperManager.getWallpaperInfo() == null; 748 } 749 750 // If we are not fading in adjacent screens, we still need to restore the alpha in case the 751 // user scrolls while we are transitioning (should not affect dispatchDraw optimizations) 752 if (!mWorkspaceFadeInAdjacentScreens) { 753 for (int i = 0; i < getChildCount(); ++i) { 754 ((CellLayout) getPageAt(i)).setShortcutAndWidgetAlpha(1f); 755 } 756 } 757 758 // Show the scroll indicator as you pan the page 759 showScrollingIndicator(false); 760 } 761 762 protected void onPageEndMoving() { 763 super.onPageEndMoving(); 764 765 if (isHardwareAccelerated()) { 766 updateChildrenLayersEnabled(false); 767 } else { 768 clearChildrenCache(); 769 } 770 771 772 if (mDragController.isDragging()) { 773 if (isSmall()) { 774 // If we are in springloaded mode, then force an event to check if the current touch 775 // is under a new page (to scroll to) 776 mDragController.forceMoveEvent(); 777 } 778 } else { 779 // If we are not mid-dragging, hide the page outlines if we are on a large screen 780 if (LauncherApplication.isScreenLarge()) { 781 hideOutlines(); 782 } 783 784 // Hide the scroll indicator as you pan the page 785 if (!mDragController.isDragging()) { 786 hideScrollingIndicator(false); 787 } 788 } 789 mOverScrollMaxBackgroundAlpha = 0.0f; 790 791 if (mDelayedResizeRunnable != null) { 792 mDelayedResizeRunnable.run(); 793 mDelayedResizeRunnable = null; 794 } 795 796 if (mDelayedSnapToPageRunnable != null) { 797 mDelayedSnapToPageRunnable.run(); 798 mDelayedSnapToPageRunnable = null; 799 } 800 } 801 802 @Override 803 protected void notifyPageSwitchListener() { 804 super.notifyPageSwitchListener(); 805 Launcher.setScreen(mCurrentPage); 806 }; 807 808 // As a ratio of screen height, the total distance we want the parallax effect to span 809 // horizontally 810 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 811 float aspectRatio = width / (float) height; 812 813 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 814 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 815 // We will use these two data points to extrapolate how much the wallpaper parallax effect 816 // to span (ie travel) at any aspect ratio: 817 818 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 819 final float ASPECT_RATIO_PORTRAIT = 10/16f; 820 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 821 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 822 823 // To find out the desired width at different aspect ratios, we use the following two 824 // formulas, where the coefficient on x is the aspect ratio (width/height): 825 // (16/10)x + y = 1.5 826 // (10/16)x + y = 1.2 827 // We solve for x and y and end up with a final formula: 828 final float x = 829 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 830 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 831 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 832 return x * aspectRatio + y; 833 } 834 835 // The range of scroll values for Workspace 836 private int getScrollRange() { 837 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 838 } 839 840 protected void setWallpaperDimension() { 841 Point minDims = new Point(); 842 Point maxDims = new Point(); 843 mLauncher.getWindowManager().getDefaultDisplay().getCurrentSizeRange(minDims, maxDims); 844 845 final int maxDim = Math.max(maxDims.x, maxDims.y); 846 final int minDim = Math.min(minDims.x, minDims.y); 847 848 // We need to ensure that there is enough extra space in the wallpaper for the intended 849 // parallax effects 850 if (LauncherApplication.isScreenLarge()) { 851 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 852 mWallpaperHeight = maxDim; 853 } else { 854 mWallpaperWidth = Math.max((int) (minDim * WALLPAPER_SCREENS_SPAN), maxDim); 855 mWallpaperHeight = maxDim; 856 } 857 new Thread("setWallpaperDimension") { 858 public void run() { 859 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 860 } 861 }.start(); 862 } 863 864 private float wallpaperOffsetForCurrentScroll() { 865 // Set wallpaper offset steps (1 / (number of screens - 1)) 866 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f); 867 868 // For the purposes of computing the scrollRange and overScrollOffset, we assume 869 // that mLayoutScale is 1. This means that when we're in spring-loaded mode, 870 // there's no discrepancy between the wallpaper offset for a given page. 871 float layoutScale = mLayoutScale; 872 mLayoutScale = 1f; 873 int scrollRange = getScrollRange(); 874 875 // Again, we adjust the wallpaper offset to be consistent between values of mLayoutScale 876 float adjustedScrollX = Math.max(0, Math.min(getScrollX(), mMaxScrollX)); 877 adjustedScrollX *= mWallpaperScrollRatio; 878 mLayoutScale = layoutScale; 879 880 float scrollProgress = 881 adjustedScrollX / (float) scrollRange; 882 883 if (LauncherApplication.isScreenLarge() && mIsStaticWallpaper) { 884 // The wallpaper travel width is how far, from left to right, the wallpaper will move 885 // at this orientation. On tablets in portrait mode we don't move all the way to the 886 // edges of the wallpaper, or otherwise the parallax effect would be too strong. 887 int wallpaperTravelWidth = Math.min(mWallpaperTravelWidth, mWallpaperWidth); 888 889 float offsetInDips = wallpaperTravelWidth * scrollProgress + 890 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 891 float offset = offsetInDips / (float) mWallpaperWidth; 892 return offset; 893 } else { 894 return scrollProgress; 895 } 896 } 897 898 private void syncWallpaperOffsetWithScroll() { 899 final boolean enableWallpaperEffects = isHardwareAccelerated(); 900 if (enableWallpaperEffects) { 901 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 902 } 903 } 904 905 public void updateWallpaperOffsetImmediately() { 906 mUpdateWallpaperOffsetImmediately = true; 907 } 908 909 private void updateWallpaperOffsets() { 910 boolean updateNow = false; 911 boolean keepUpdating = true; 912 if (mUpdateWallpaperOffsetImmediately) { 913 updateNow = true; 914 keepUpdating = false; 915 mWallpaperOffset.jumpToFinal(); 916 mUpdateWallpaperOffsetImmediately = false; 917 } else { 918 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 919 } 920 if (updateNow) { 921 if (mWindowToken != null) { 922 mWallpaperManager.setWallpaperOffsets(mWindowToken, 923 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 924 } 925 } 926 if (keepUpdating) { 927 invalidate(); 928 } 929 } 930 931 @Override 932 protected void updateCurrentPageScroll() { 933 super.updateCurrentPageScroll(); 934 computeWallpaperScrollRatio(mCurrentPage); 935 } 936 937 @Override 938 protected void snapToPage(int whichPage) { 939 super.snapToPage(whichPage); 940 computeWallpaperScrollRatio(whichPage); 941 } 942 943 @Override 944 protected void snapToPage(int whichPage, int duration) { 945 super.snapToPage(whichPage, duration); 946 computeWallpaperScrollRatio(whichPage); 947 } 948 949 protected void snapToPage(int whichPage, Runnable r) { 950 if (mDelayedSnapToPageRunnable != null) { 951 mDelayedSnapToPageRunnable.run(); 952 } 953 mDelayedSnapToPageRunnable = r; 954 snapToPage(whichPage, SLOW_PAGE_SNAP_ANIMATION_DURATION); 955 } 956 957 private void computeWallpaperScrollRatio(int page) { 958 // Here, we determine what the desired scroll would be with and without a layout scale, 959 // and compute a ratio between the two. This allows us to adjust the wallpaper offset 960 // as though there is no layout scale. 961 float layoutScale = mLayoutScale; 962 int scaled = getChildOffset(page) - getRelativeChildOffset(page); 963 mLayoutScale = 1.0f; 964 float unscaled = getChildOffset(page) - getRelativeChildOffset(page); 965 mLayoutScale = layoutScale; 966 if (scaled > 0) { 967 mWallpaperScrollRatio = (1.0f * unscaled) / scaled; 968 } else { 969 mWallpaperScrollRatio = 1f; 970 } 971 } 972 973 class WallpaperOffsetInterpolator { 974 float mFinalHorizontalWallpaperOffset = 0.0f; 975 float mFinalVerticalWallpaperOffset = 0.5f; 976 float mHorizontalWallpaperOffset = 0.0f; 977 float mVerticalWallpaperOffset = 0.5f; 978 long mLastWallpaperOffsetUpdateTime; 979 boolean mIsMovingFast; 980 boolean mOverrideHorizontalCatchupConstant; 981 float mHorizontalCatchupConstant = 0.35f; 982 float mVerticalCatchupConstant = 0.35f; 983 984 public WallpaperOffsetInterpolator() { 985 } 986 987 public void setOverrideHorizontalCatchupConstant(boolean override) { 988 mOverrideHorizontalCatchupConstant = override; 989 } 990 991 public void setHorizontalCatchupConstant(float f) { 992 mHorizontalCatchupConstant = f; 993 } 994 995 public void setVerticalCatchupConstant(float f) { 996 mVerticalCatchupConstant = f; 997 } 998 999 public boolean computeScrollOffset() { 1000 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 1001 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 1002 mIsMovingFast = false; 1003 return false; 1004 } 1005 boolean isLandscape = mDisplaySize.x > mDisplaySize.y; 1006 1007 long currentTime = System.currentTimeMillis(); 1008 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 1009 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 1010 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 1011 1012 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 1013 if (!mIsMovingFast && xdiff > 0.07) { 1014 mIsMovingFast = true; 1015 } 1016 1017 float fractionToCatchUpIn1MsHorizontal; 1018 if (mOverrideHorizontalCatchupConstant) { 1019 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 1020 } else if (mIsMovingFast) { 1021 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 1022 } else { 1023 // slow 1024 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 1025 } 1026 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 1027 1028 fractionToCatchUpIn1MsHorizontal /= 33f; 1029 fractionToCatchUpIn1MsVertical /= 33f; 1030 1031 final float UPDATE_THRESHOLD = 0.00001f; 1032 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 1033 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 1034 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 1035 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 1036 1037 // Don't have any lag between workspace and wallpaper on non-large devices 1038 if (!LauncherApplication.isScreenLarge() || jumpToFinalValue) { 1039 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 1040 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 1041 } else { 1042 float percentToCatchUpVertical = 1043 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 1044 float percentToCatchUpHorizontal = 1045 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 1046 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 1047 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 1048 } 1049 1050 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 1051 return true; 1052 } 1053 1054 public float getCurrX() { 1055 return mHorizontalWallpaperOffset; 1056 } 1057 1058 public float getFinalX() { 1059 return mFinalHorizontalWallpaperOffset; 1060 } 1061 1062 public float getCurrY() { 1063 return mVerticalWallpaperOffset; 1064 } 1065 1066 public float getFinalY() { 1067 return mFinalVerticalWallpaperOffset; 1068 } 1069 1070 public void setFinalX(float x) { 1071 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 1072 } 1073 1074 public void setFinalY(float y) { 1075 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 1076 } 1077 1078 public void jumpToFinal() { 1079 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 1080 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 1081 } 1082 } 1083 1084 @Override 1085 public void computeScroll() { 1086 super.computeScroll(); 1087 syncWallpaperOffsetWithScroll(); 1088 } 1089 1090 void showOutlines() { 1091 if (!isSmall() && !mIsSwitchingState) { 1092 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1093 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1094 mChildrenOutlineFadeInAnimation = LauncherAnimUtils.ofFloat(this, "childrenOutlineAlpha", 1.0f); 1095 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 1096 mChildrenOutlineFadeInAnimation.start(); 1097 } 1098 } 1099 1100 void hideOutlines() { 1101 if (!isSmall() && !mIsSwitchingState) { 1102 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1103 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1104 mChildrenOutlineFadeOutAnimation = LauncherAnimUtils.ofFloat(this, "childrenOutlineAlpha", 0.0f); 1105 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 1106 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 1107 mChildrenOutlineFadeOutAnimation.start(); 1108 } 1109 } 1110 1111 public void showOutlinesTemporarily() { 1112 if (!mIsPageMoving && !isTouchActive()) { 1113 snapToPage(mCurrentPage); 1114 } 1115 } 1116 1117 public void setChildrenOutlineAlpha(float alpha) { 1118 mChildrenOutlineAlpha = alpha; 1119 for (int i = 0; i < getChildCount(); i++) { 1120 CellLayout cl = (CellLayout) getChildAt(i); 1121 cl.setBackgroundAlpha(alpha); 1122 } 1123 } 1124 1125 public float getChildrenOutlineAlpha() { 1126 return mChildrenOutlineAlpha; 1127 } 1128 1129 void disableBackground() { 1130 mDrawBackground = false; 1131 } 1132 void enableBackground() { 1133 mDrawBackground = true; 1134 } 1135 1136 private void animateBackgroundGradient(float finalAlpha, boolean animated) { 1137 if (mBackground == null) return; 1138 if (mBackgroundFadeInAnimation != null) { 1139 mBackgroundFadeInAnimation.cancel(); 1140 mBackgroundFadeInAnimation = null; 1141 } 1142 if (mBackgroundFadeOutAnimation != null) { 1143 mBackgroundFadeOutAnimation.cancel(); 1144 mBackgroundFadeOutAnimation = null; 1145 } 1146 float startAlpha = getBackgroundAlpha(); 1147 if (finalAlpha != startAlpha) { 1148 if (animated) { 1149 mBackgroundFadeOutAnimation = LauncherAnimUtils.ofFloat(startAlpha, finalAlpha); 1150 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1151 public void onAnimationUpdate(ValueAnimator animation) { 1152 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1153 } 1154 }); 1155 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1156 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1157 mBackgroundFadeOutAnimation.start(); 1158 } else { 1159 setBackgroundAlpha(finalAlpha); 1160 } 1161 } 1162 } 1163 1164 public void setBackgroundAlpha(float alpha) { 1165 if (alpha != mBackgroundAlpha) { 1166 mBackgroundAlpha = alpha; 1167 invalidate(); 1168 } 1169 } 1170 1171 public float getBackgroundAlpha() { 1172 return mBackgroundAlpha; 1173 } 1174 1175 float backgroundAlphaInterpolator(float r) { 1176 float pivotA = 0.1f; 1177 float pivotB = 0.4f; 1178 if (r < pivotA) { 1179 return 0; 1180 } else if (r > pivotB) { 1181 return 1.0f; 1182 } else { 1183 return (r - pivotA)/(pivotB - pivotA); 1184 } 1185 } 1186 1187 private void updatePageAlphaValues(int screenCenter) { 1188 boolean isInOverscroll = mOverScrollX < 0 || mOverScrollX > mMaxScrollX; 1189 if (mWorkspaceFadeInAdjacentScreens && 1190 mState == State.NORMAL && 1191 !mIsSwitchingState && 1192 !isInOverscroll) { 1193 for (int i = 0; i < getChildCount(); i++) { 1194 CellLayout child = (CellLayout) getChildAt(i); 1195 if (child != null) { 1196 float scrollProgress = getScrollProgress(screenCenter, child, i); 1197 float alpha = 1 - Math.abs(scrollProgress); 1198 child.getShortcutsAndWidgets().setAlpha(alpha); 1199 if (!mIsDragOccuring) { 1200 child.setBackgroundAlphaMultiplier( 1201 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1202 } else { 1203 child.setBackgroundAlphaMultiplier(1f); 1204 } 1205 } 1206 } 1207 } 1208 } 1209 1210 private void setChildrenBackgroundAlphaMultipliers(float a) { 1211 for (int i = 0; i < getChildCount(); i++) { 1212 CellLayout child = (CellLayout) getChildAt(i); 1213 child.setBackgroundAlphaMultiplier(a); 1214 } 1215 } 1216 1217 @Override 1218 protected void screenScrolled(int screenCenter) { 1219 final boolean isRtl = isLayoutRtl(); 1220 super.screenScrolled(screenCenter); 1221 1222 updatePageAlphaValues(screenCenter); 1223 enableHwLayersOnVisiblePages(); 1224 1225 if (mOverScrollX < 0 || mOverScrollX > mMaxScrollX) { 1226 int index = 0; 1227 float pivotX = 0f; 1228 final float leftBiasedPivot = 0.25f; 1229 final float rightBiasedPivot = 0.75f; 1230 final int lowerIndex = 0; 1231 final int upperIndex = getChildCount() - 1; 1232 if (isRtl) { 1233 index = mOverScrollX < 0 ? upperIndex : lowerIndex; 1234 pivotX = (index == 0 ? leftBiasedPivot : rightBiasedPivot); 1235 } else { 1236 index = mOverScrollX < 0 ? lowerIndex : upperIndex; 1237 pivotX = (index == 0 ? rightBiasedPivot : leftBiasedPivot); 1238 } 1239 1240 CellLayout cl = (CellLayout) getChildAt(index); 1241 float scrollProgress = getScrollProgress(screenCenter, cl, index); 1242 final boolean isLeftPage = (isRtl ? index > 0 : index == 0); 1243 cl.setOverScrollAmount(Math.abs(scrollProgress), isLeftPage); 1244 float rotation = -WORKSPACE_OVERSCROLL_ROTATION * scrollProgress; 1245 cl.setRotationY(rotation); 1246 setFadeForOverScroll(Math.abs(scrollProgress)); 1247 if (!mOverscrollTransformsSet) { 1248 mOverscrollTransformsSet = true; 1249 cl.setCameraDistance(mDensity * mCameraDistance); 1250 cl.setPivotX(cl.getMeasuredWidth() * pivotX); 1251 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1252 cl.setOverscrollTransformsDirty(true); 1253 } 1254 } else { 1255 if (mOverscrollFade != 0) { 1256 setFadeForOverScroll(0); 1257 } 1258 if (mOverscrollTransformsSet) { 1259 mOverscrollTransformsSet = false; 1260 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1261 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1262 } 1263 } 1264 } 1265 1266 @Override 1267 protected void overScroll(float amount) { 1268 acceleratedOverScroll(amount); 1269 } 1270 1271 protected void onAttachedToWindow() { 1272 super.onAttachedToWindow(); 1273 mWindowToken = getWindowToken(); 1274 computeScroll(); 1275 mDragController.setWindowToken(mWindowToken); 1276 } 1277 1278 protected void onDetachedFromWindow() { 1279 mWindowToken = null; 1280 } 1281 1282 @Override 1283 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1284 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1285 mUpdateWallpaperOffsetImmediately = true; 1286 } 1287 super.onLayout(changed, left, top, right, bottom); 1288 } 1289 1290 @Override 1291 protected void onDraw(Canvas canvas) { 1292 updateWallpaperOffsets(); 1293 1294 // Draw the background gradient if necessary 1295 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1296 int alpha = (int) (mBackgroundAlpha * 255); 1297 mBackground.setAlpha(alpha); 1298 mBackground.setBounds(getScrollX(), 0, getScrollX() + getMeasuredWidth(), 1299 getMeasuredHeight()); 1300 mBackground.draw(canvas); 1301 } 1302 1303 super.onDraw(canvas); 1304 1305 // Call back to LauncherModel to finish binding after the first draw 1306 post(mBindPages); 1307 } 1308 1309 boolean isDrawingBackgroundGradient() { 1310 return (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground); 1311 } 1312 1313 @Override 1314 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1315 if (!mLauncher.isAllAppsVisible()) { 1316 final Folder openFolder = getOpenFolder(); 1317 if (openFolder != null) { 1318 return openFolder.requestFocus(direction, previouslyFocusedRect); 1319 } else { 1320 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1321 } 1322 } 1323 return false; 1324 } 1325 1326 @Override 1327 public int getDescendantFocusability() { 1328 if (isSmall()) { 1329 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1330 } 1331 return super.getDescendantFocusability(); 1332 } 1333 1334 @Override 1335 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1336 if (!mLauncher.isAllAppsVisible()) { 1337 final Folder openFolder = getOpenFolder(); 1338 if (openFolder != null) { 1339 openFolder.addFocusables(views, direction); 1340 } else { 1341 super.addFocusables(views, direction, focusableMode); 1342 } 1343 } 1344 } 1345 1346 public boolean isSmall() { 1347 return mState == State.SMALL || mState == State.SPRING_LOADED; 1348 } 1349 1350 void enableChildrenCache(int fromPage, int toPage) { 1351 if (fromPage > toPage) { 1352 final int temp = fromPage; 1353 fromPage = toPage; 1354 toPage = temp; 1355 } 1356 1357 final int screenCount = getChildCount(); 1358 1359 fromPage = Math.max(fromPage, 0); 1360 toPage = Math.min(toPage, screenCount - 1); 1361 1362 for (int i = fromPage; i <= toPage; i++) { 1363 final CellLayout layout = (CellLayout) getChildAt(i); 1364 layout.setChildrenDrawnWithCacheEnabled(true); 1365 layout.setChildrenDrawingCacheEnabled(true); 1366 } 1367 } 1368 1369 void clearChildrenCache() { 1370 final int screenCount = getChildCount(); 1371 for (int i = 0; i < screenCount; i++) { 1372 final CellLayout layout = (CellLayout) getChildAt(i); 1373 layout.setChildrenDrawnWithCacheEnabled(false); 1374 // In software mode, we don't want the items to continue to be drawn into bitmaps 1375 if (!isHardwareAccelerated()) { 1376 layout.setChildrenDrawingCacheEnabled(false); 1377 } 1378 } 1379 } 1380 1381 1382 private void updateChildrenLayersEnabled(boolean force) { 1383 boolean small = mState == State.SMALL || mIsSwitchingState; 1384 boolean enableChildrenLayers = force || small || mAnimatingViewIntoPlace || isPageMoving(); 1385 1386 if (enableChildrenLayers != mChildrenLayersEnabled) { 1387 mChildrenLayersEnabled = enableChildrenLayers; 1388 if (mChildrenLayersEnabled) { 1389 enableHwLayersOnVisiblePages(); 1390 } else { 1391 for (int i = 0; i < getPageCount(); i++) { 1392 final CellLayout cl = (CellLayout) getChildAt(i); 1393 cl.disableHardwareLayers(); 1394 } 1395 } 1396 } 1397 } 1398 1399 private void enableHwLayersOnVisiblePages() { 1400 if (mChildrenLayersEnabled) { 1401 final int screenCount = getChildCount(); 1402 getVisiblePages(mTempVisiblePagesRange); 1403 int leftScreen = mTempVisiblePagesRange[0]; 1404 int rightScreen = mTempVisiblePagesRange[1]; 1405 if (leftScreen == rightScreen) { 1406 // make sure we're caching at least two pages always 1407 if (rightScreen < screenCount - 1) { 1408 rightScreen++; 1409 } else if (leftScreen > 0) { 1410 leftScreen--; 1411 } 1412 } 1413 for (int i = 0; i < screenCount; i++) { 1414 final CellLayout layout = (CellLayout) getPageAt(i); 1415 if (!(leftScreen <= i && i <= rightScreen && shouldDrawChild(layout))) { 1416 layout.disableHardwareLayers(); 1417 } 1418 } 1419 for (int i = 0; i < screenCount; i++) { 1420 final CellLayout layout = (CellLayout) getPageAt(i); 1421 if (leftScreen <= i && i <= rightScreen && shouldDrawChild(layout)) { 1422 layout.enableHardwareLayers(); 1423 } 1424 } 1425 } 1426 } 1427 1428 public void buildPageHardwareLayers() { 1429 // force layers to be enabled just for the call to buildLayer 1430 updateChildrenLayersEnabled(true); 1431 if (getWindowToken() != null) { 1432 final int childCount = getChildCount(); 1433 for (int i = 0; i < childCount; i++) { 1434 CellLayout cl = (CellLayout) getChildAt(i); 1435 cl.buildHardwareLayer(); 1436 } 1437 } 1438 updateChildrenLayersEnabled(false); 1439 } 1440 1441 protected void onWallpaperTap(MotionEvent ev) { 1442 final int[] position = mTempCell; 1443 getLocationOnScreen(position); 1444 1445 int pointerIndex = ev.getActionIndex(); 1446 position[0] += (int) ev.getX(pointerIndex); 1447 position[1] += (int) ev.getY(pointerIndex); 1448 1449 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1450 ev.getAction() == MotionEvent.ACTION_UP 1451 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1452 position[0], position[1], 0, null); 1453 } 1454 1455 /* 1456 * This interpolator emulates the rate at which the perceived scale of an object changes 1457 * as its distance from a camera increases. When this interpolator is applied to a scale 1458 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1459 * from the camera. 1460 */ 1461 static class ZInterpolator implements TimeInterpolator { 1462 private float focalLength; 1463 1464 public ZInterpolator(float foc) { 1465 focalLength = foc; 1466 } 1467 1468 public float getInterpolation(float input) { 1469 return (1.0f - focalLength / (focalLength + input)) / 1470 (1.0f - focalLength / (focalLength + 1.0f)); 1471 } 1472 } 1473 1474 /* 1475 * The exact reverse of ZInterpolator. 1476 */ 1477 static class InverseZInterpolator implements TimeInterpolator { 1478 private ZInterpolator zInterpolator; 1479 public InverseZInterpolator(float foc) { 1480 zInterpolator = new ZInterpolator(foc); 1481 } 1482 public float getInterpolation(float input) { 1483 return 1 - zInterpolator.getInterpolation(1 - input); 1484 } 1485 } 1486 1487 /* 1488 * ZInterpolator compounded with an ease-out. 1489 */ 1490 static class ZoomOutInterpolator implements TimeInterpolator { 1491 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(0.75f); 1492 private final ZInterpolator zInterpolator = new ZInterpolator(0.13f); 1493 1494 public float getInterpolation(float input) { 1495 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1496 } 1497 } 1498 1499 /* 1500 * InvereZInterpolator compounded with an ease-out. 1501 */ 1502 static class ZoomInInterpolator implements TimeInterpolator { 1503 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1504 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1505 1506 public float getInterpolation(float input) { 1507 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1508 } 1509 } 1510 1511 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1512 1513 /* 1514 * 1515 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1516 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1517 * 1518 * These methods mark the appropriate pages as accepting drops (which alters their visual 1519 * appearance). 1520 * 1521 */ 1522 public void onDragStartedWithItem(View v) { 1523 final Canvas canvas = new Canvas(); 1524 1525 // The outline is used to visualize where the item will land if dropped 1526 mDragOutline = createDragOutline(v, canvas, DRAG_BITMAP_PADDING); 1527 } 1528 1529 public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, boolean clipAlpha) { 1530 final Canvas canvas = new Canvas(); 1531 1532 int[] size = estimateItemSize(info.spanX, info.spanY, info, false); 1533 1534 // The outline is used to visualize where the item will land if dropped 1535 mDragOutline = createDragOutline(b, canvas, DRAG_BITMAP_PADDING, size[0], 1536 size[1], clipAlpha); 1537 } 1538 1539 public void exitWidgetResizeMode() { 1540 DragLayer dragLayer = mLauncher.getDragLayer(); 1541 dragLayer.clearAllResizeFrames(); 1542 } 1543 1544 private void initAnimationArrays() { 1545 final int childCount = getChildCount(); 1546 if (mOldTranslationXs != null) return; 1547 mOldTranslationXs = new float[childCount]; 1548 mOldTranslationYs = new float[childCount]; 1549 mOldScaleXs = new float[childCount]; 1550 mOldScaleYs = new float[childCount]; 1551 mOldBackgroundAlphas = new float[childCount]; 1552 mOldAlphas = new float[childCount]; 1553 mNewTranslationXs = new float[childCount]; 1554 mNewTranslationYs = new float[childCount]; 1555 mNewScaleXs = new float[childCount]; 1556 mNewScaleYs = new float[childCount]; 1557 mNewBackgroundAlphas = new float[childCount]; 1558 mNewAlphas = new float[childCount]; 1559 mNewRotationYs = new float[childCount]; 1560 } 1561 1562 Animator getChangeStateAnimation(final State state, boolean animated) { 1563 return getChangeStateAnimation(state, animated, 0); 1564 } 1565 1566 Animator getChangeStateAnimation(final State state, boolean animated, int delay) { 1567 if (mState == state) { 1568 return null; 1569 } 1570 1571 // Initialize animation arrays for the first time if necessary 1572 initAnimationArrays(); 1573 1574 AnimatorSet anim = animated ? LauncherAnimUtils.createAnimatorSet() : null; 1575 1576 // Stop any scrolling, move to the current page right away 1577 setCurrentPage(getNextPage()); 1578 1579 final State oldState = mState; 1580 final boolean oldStateIsNormal = (oldState == State.NORMAL); 1581 final boolean oldStateIsSpringLoaded = (oldState == State.SPRING_LOADED); 1582 final boolean oldStateIsSmall = (oldState == State.SMALL); 1583 mState = state; 1584 final boolean stateIsNormal = (state == State.NORMAL); 1585 final boolean stateIsSpringLoaded = (state == State.SPRING_LOADED); 1586 final boolean stateIsSmall = (state == State.SMALL); 1587 float finalScaleFactor = 1.0f; 1588 float finalBackgroundAlpha = stateIsSpringLoaded ? 1.0f : 0f; 1589 float translationX = 0; 1590 float translationY = 0; 1591 boolean zoomIn = true; 1592 1593 if (state != State.NORMAL) { 1594 finalScaleFactor = mSpringLoadedShrinkFactor - (stateIsSmall ? 0.1f : 0); 1595 setPageSpacing(mSpringLoadedPageSpacing); 1596 if (oldStateIsNormal && stateIsSmall) { 1597 zoomIn = false; 1598 setLayoutScale(finalScaleFactor); 1599 updateChildrenLayersEnabled(false); 1600 } else { 1601 finalBackgroundAlpha = 1.0f; 1602 setLayoutScale(finalScaleFactor); 1603 } 1604 } else { 1605 setPageSpacing(mOriginalPageSpacing); 1606 setLayoutScale(1.0f); 1607 } 1608 1609 final int duration = zoomIn ? 1610 getResources().getInteger(R.integer.config_workspaceUnshrinkTime) : 1611 getResources().getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1612 for (int i = 0; i < getChildCount(); i++) { 1613 final CellLayout cl = (CellLayout) getChildAt(i); 1614 float finalAlpha = (!mWorkspaceFadeInAdjacentScreens || stateIsSpringLoaded || 1615 (i == mCurrentPage)) ? 1f : 0f; 1616 float currentAlpha = cl.getShortcutsAndWidgets().getAlpha(); 1617 float initialAlpha = currentAlpha; 1618 1619 // Determine the pages alpha during the state transition 1620 if ((oldStateIsSmall && stateIsNormal) || 1621 (oldStateIsNormal && stateIsSmall)) { 1622 // To/from workspace - only show the current page unless the transition is not 1623 // animated and the animation end callback below doesn't run; 1624 // or, if we're in spring-loaded mode 1625 if (i == mCurrentPage || !animated || oldStateIsSpringLoaded) { 1626 finalAlpha = 1f; 1627 } else { 1628 initialAlpha = 0f; 1629 finalAlpha = 0f; 1630 } 1631 } 1632 1633 mOldAlphas[i] = initialAlpha; 1634 mNewAlphas[i] = finalAlpha; 1635 if (animated) { 1636 mOldTranslationXs[i] = cl.getTranslationX(); 1637 mOldTranslationYs[i] = cl.getTranslationY(); 1638 mOldScaleXs[i] = cl.getScaleX(); 1639 mOldScaleYs[i] = cl.getScaleY(); 1640 mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1641 1642 mNewTranslationXs[i] = translationX; 1643 mNewTranslationYs[i] = translationY; 1644 mNewScaleXs[i] = finalScaleFactor; 1645 mNewScaleYs[i] = finalScaleFactor; 1646 mNewBackgroundAlphas[i] = finalBackgroundAlpha; 1647 } else { 1648 cl.setTranslationX(translationX); 1649 cl.setTranslationY(translationY); 1650 cl.setScaleX(finalScaleFactor); 1651 cl.setScaleY(finalScaleFactor); 1652 cl.setBackgroundAlpha(finalBackgroundAlpha); 1653 cl.setShortcutAndWidgetAlpha(finalAlpha); 1654 } 1655 } 1656 1657 if (animated) { 1658 for (int index = 0; index < getChildCount(); index++) { 1659 final int i = index; 1660 final CellLayout cl = (CellLayout) getChildAt(i); 1661 float currentAlpha = cl.getShortcutsAndWidgets().getAlpha(); 1662 if (mOldAlphas[i] == 0 && mNewAlphas[i] == 0) { 1663 cl.setTranslationX(mNewTranslationXs[i]); 1664 cl.setTranslationY(mNewTranslationYs[i]); 1665 cl.setScaleX(mNewScaleXs[i]); 1666 cl.setScaleY(mNewScaleYs[i]); 1667 cl.setBackgroundAlpha(mNewBackgroundAlphas[i]); 1668 cl.setShortcutAndWidgetAlpha(mNewAlphas[i]); 1669 cl.setRotationY(mNewRotationYs[i]); 1670 } else { 1671 LauncherViewPropertyAnimator a = new LauncherViewPropertyAnimator(cl); 1672 a.translationX(mNewTranslationXs[i]) 1673 .translationY(mNewTranslationYs[i]) 1674 .scaleX(mNewScaleXs[i]) 1675 .scaleY(mNewScaleYs[i]) 1676 .setDuration(duration) 1677 .setInterpolator(mZoomInInterpolator); 1678 anim.play(a); 1679 1680 if (mOldAlphas[i] != mNewAlphas[i] || currentAlpha != mNewAlphas[i]) { 1681 LauncherViewPropertyAnimator alphaAnim = 1682 new LauncherViewPropertyAnimator(cl.getShortcutsAndWidgets()); 1683 alphaAnim.alpha(mNewAlphas[i]) 1684 .setDuration(duration) 1685 .setInterpolator(mZoomInInterpolator); 1686 anim.play(alphaAnim); 1687 } 1688 if (mOldBackgroundAlphas[i] != 0 || 1689 mNewBackgroundAlphas[i] != 0) { 1690 ValueAnimator bgAnim = LauncherAnimUtils.ofFloat(0f, 1f).setDuration(duration); 1691 bgAnim.setInterpolator(mZoomInInterpolator); 1692 bgAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1693 public void onAnimationUpdate(float a, float b) { 1694 cl.setBackgroundAlpha( 1695 a * mOldBackgroundAlphas[i] + 1696 b * mNewBackgroundAlphas[i]); 1697 } 1698 }); 1699 anim.play(bgAnim); 1700 } 1701 } 1702 } 1703 buildPageHardwareLayers(); 1704 anim.setStartDelay(delay); 1705 } 1706 1707 if (stateIsSpringLoaded) { 1708 // Right now we're covered by Apps Customize 1709 // Show the background gradient immediately, so the gradient will 1710 // be showing once AppsCustomize disappears 1711 animateBackgroundGradient(getResources().getInteger( 1712 R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, false); 1713 } else { 1714 // Fade the background gradient away 1715 animateBackgroundGradient(0f, true); 1716 } 1717 return anim; 1718 } 1719 1720 @Override 1721 public void onLauncherTransitionPrepare(Launcher l, boolean animated, boolean toWorkspace) { 1722 mIsSwitchingState = true; 1723 cancelScrollingIndicatorAnimations(); 1724 } 1725 1726 @Override 1727 public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) { 1728 } 1729 1730 @Override 1731 public void onLauncherTransitionStep(Launcher l, float t) { 1732 mTransitionProgress = t; 1733 } 1734 1735 @Override 1736 public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) { 1737 mIsSwitchingState = false; 1738 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 1739 updateChildrenLayersEnabled(false); 1740 // The code in getChangeStateAnimation to determine initialAlpha and finalAlpha will ensure 1741 // ensure that only the current page is visible during (and subsequently, after) the 1742 // transition animation. If fade adjacent pages is disabled, then re-enable the page 1743 // visibility after the transition animation. 1744 if (!mWorkspaceFadeInAdjacentScreens) { 1745 for (int i = 0; i < getChildCount(); i++) { 1746 final CellLayout cl = (CellLayout) getChildAt(i); 1747 cl.setShortcutAndWidgetAlpha(1f); 1748 } 1749 } 1750 } 1751 1752 @Override 1753 public View getContent() { 1754 return this; 1755 } 1756 1757 /** 1758 * Draw the View v into the given Canvas. 1759 * 1760 * @param v the view to draw 1761 * @param destCanvas the canvas to draw on 1762 * @param padding the horizontal and vertical padding to use when drawing 1763 */ 1764 private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { 1765 final Rect clipRect = mTempRect; 1766 v.getDrawingRect(clipRect); 1767 1768 boolean textVisible = false; 1769 1770 destCanvas.save(); 1771 if (v instanceof TextView && pruneToDrawable) { 1772 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1773 clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); 1774 destCanvas.translate(padding / 2, padding / 2); 1775 d.draw(destCanvas); 1776 } else { 1777 if (v instanceof FolderIcon) { 1778 // For FolderIcons the text can bleed into the icon area, and so we need to 1779 // hide the text completely (which can't be achieved by clipping). 1780 if (((FolderIcon) v).getTextVisible()) { 1781 ((FolderIcon) v).setTextVisible(false); 1782 textVisible = true; 1783 } 1784 } else if (v instanceof BubbleTextView) { 1785 final BubbleTextView tv = (BubbleTextView) v; 1786 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1787 tv.getLayout().getLineTop(0); 1788 } else if (v instanceof TextView) { 1789 final TextView tv = (TextView) v; 1790 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1791 tv.getLayout().getLineTop(0); 1792 } 1793 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1794 destCanvas.clipRect(clipRect, Op.REPLACE); 1795 v.draw(destCanvas); 1796 1797 // Restore text visibility of FolderIcon if necessary 1798 if (textVisible) { 1799 ((FolderIcon) v).setTextVisible(true); 1800 } 1801 } 1802 destCanvas.restore(); 1803 } 1804 1805 /** 1806 * Returns a new bitmap to show when the given View is being dragged around. 1807 * Responsibility for the bitmap is transferred to the caller. 1808 */ 1809 public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1810 Bitmap b; 1811 1812 if (v instanceof TextView) { 1813 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1814 b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, 1815 d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); 1816 } else { 1817 b = Bitmap.createBitmap( 1818 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1819 } 1820 1821 canvas.setBitmap(b); 1822 drawDragView(v, canvas, padding, true); 1823 canvas.setBitmap(null); 1824 1825 return b; 1826 } 1827 1828 /** 1829 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1830 * Responsibility for the bitmap is transferred to the caller. 1831 */ 1832 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1833 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1834 final Bitmap b = Bitmap.createBitmap( 1835 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1836 1837 canvas.setBitmap(b); 1838 drawDragView(v, canvas, padding, true); 1839 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1840 canvas.setBitmap(null); 1841 return b; 1842 } 1843 1844 /** 1845 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1846 * Responsibility for the bitmap is transferred to the caller. 1847 */ 1848 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h, 1849 boolean clipAlpha) { 1850 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1851 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1852 canvas.setBitmap(b); 1853 1854 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 1855 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 1856 (h - padding) / (float) orig.getHeight()); 1857 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 1858 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 1859 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 1860 1861 // center the image 1862 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 1863 1864 canvas.drawBitmap(orig, src, dst, null); 1865 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor, 1866 clipAlpha); 1867 canvas.setBitmap(null); 1868 1869 return b; 1870 } 1871 1872 void startDrag(CellLayout.CellInfo cellInfo) { 1873 View child = cellInfo.cell; 1874 1875 // Make sure the drag was started by a long press as opposed to a long click. 1876 if (!child.isInTouchMode()) { 1877 return; 1878 } 1879 1880 mDragInfo = cellInfo; 1881 child.setVisibility(INVISIBLE); 1882 CellLayout layout = (CellLayout) child.getParent().getParent(); 1883 layout.prepareChildForDrag(child); 1884 1885 child.clearFocus(); 1886 child.setPressed(false); 1887 1888 final Canvas canvas = new Canvas(); 1889 1890 // The outline is used to visualize where the item will land if dropped 1891 mDragOutline = createDragOutline(child, canvas, DRAG_BITMAP_PADDING); 1892 beginDragShared(child, this); 1893 } 1894 1895 public void beginDragShared(View child, DragSource source) { 1896 Resources r = getResources(); 1897 1898 // The drag bitmap follows the touch point around on the screen 1899 final Bitmap b = createDragBitmap(child, new Canvas(), DRAG_BITMAP_PADDING); 1900 1901 final int bmpWidth = b.getWidth(); 1902 final int bmpHeight = b.getHeight(); 1903 1904 float scale = mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 1905 int dragLayerX = 1906 Math.round(mTempXY[0] - (bmpWidth - scale * child.getWidth()) / 2); 1907 int dragLayerY = 1908 Math.round(mTempXY[1] - (bmpHeight - scale * bmpHeight) / 2 1909 - DRAG_BITMAP_PADDING / 2); 1910 1911 Point dragVisualizeOffset = null; 1912 Rect dragRect = null; 1913 if (child instanceof BubbleTextView || child instanceof PagedViewIcon) { 1914 int iconSize = r.getDimensionPixelSize(R.dimen.app_icon_size); 1915 int iconPaddingTop = r.getDimensionPixelSize(R.dimen.app_icon_padding_top); 1916 int top = child.getPaddingTop(); 1917 int left = (bmpWidth - iconSize) / 2; 1918 int right = left + iconSize; 1919 int bottom = top + iconSize; 1920 dragLayerY += top; 1921 // Note: The drag region is used to calculate drag layer offsets, but the 1922 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 1923 dragVisualizeOffset = new Point(-DRAG_BITMAP_PADDING / 2, 1924 iconPaddingTop - DRAG_BITMAP_PADDING / 2); 1925 dragRect = new Rect(left, top, right, bottom); 1926 } else if (child instanceof FolderIcon) { 1927 int previewSize = r.getDimensionPixelSize(R.dimen.folder_preview_size); 1928 dragRect = new Rect(0, 0, child.getWidth(), previewSize); 1929 } 1930 1931 // Clear the pressed state if necessary 1932 if (child instanceof BubbleTextView) { 1933 BubbleTextView icon = (BubbleTextView) child; 1934 icon.clearPressedOrFocusedBackground(); 1935 } 1936 1937 mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 1938 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect, scale); 1939 b.recycle(); 1940 1941 // Show the scrolling indicator when you pick up an item 1942 showScrollingIndicator(false); 1943 } 1944 1945 void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, int screen, 1946 int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { 1947 View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); 1948 1949 final int[] cellXY = new int[2]; 1950 target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1951 addInScreen(view, container, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1952 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, cellXY[0], 1953 cellXY[1]); 1954 } 1955 1956 public boolean transitionStateShouldAllowDrop() { 1957 return ((!isSwitchingState() || mTransitionProgress > 0.5f) && mState != State.SMALL); 1958 } 1959 1960 /** 1961 * {@inheritDoc} 1962 */ 1963 public boolean acceptDrop(DragObject d) { 1964 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1965 CellLayout dropTargetLayout = mDropToLayout; 1966 if (d.dragSource != this) { 1967 // Don't accept the drop if we're not over a screen at time of drop 1968 if (dropTargetLayout == null) { 1969 return false; 1970 } 1971 if (!transitionStateShouldAllowDrop()) return false; 1972 1973 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 1974 d.dragView, mDragViewVisualCenter); 1975 1976 // We want the point to be mapped to the dragTarget. 1977 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 1978 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 1979 } else { 1980 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 1981 } 1982 1983 int spanX = 1; 1984 int spanY = 1; 1985 if (mDragInfo != null) { 1986 final CellLayout.CellInfo dragCellInfo = mDragInfo; 1987 spanX = dragCellInfo.spanX; 1988 spanY = dragCellInfo.spanY; 1989 } else { 1990 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 1991 spanX = dragInfo.spanX; 1992 spanY = dragInfo.spanY; 1993 } 1994 1995 int minSpanX = spanX; 1996 int minSpanY = spanY; 1997 if (d.dragInfo instanceof PendingAddWidgetInfo) { 1998 minSpanX = ((PendingAddWidgetInfo) d.dragInfo).minSpanX; 1999 minSpanY = ((PendingAddWidgetInfo) d.dragInfo).minSpanY; 2000 } 2001 2002 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2003 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, dropTargetLayout, 2004 mTargetCell); 2005 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2006 mDragViewVisualCenter[1], mTargetCell); 2007 if (willCreateUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, 2008 mTargetCell, distance, true)) { 2009 return true; 2010 } 2011 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, 2012 mTargetCell, distance)) { 2013 return true; 2014 } 2015 2016 int[] resultSpan = new int[2]; 2017 mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], 2018 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2019 null, mTargetCell, resultSpan, CellLayout.MODE_ACCEPT_DROP); 2020 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2021 2022 // Don't accept the drop if there's no room for the item 2023 if (!foundCell) { 2024 // Don't show the message if we are dropping on the AllApps button and the hotseat 2025 // is full 2026 boolean isHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2027 if (mTargetCell != null && isHotseat) { 2028 Hotseat hotseat = mLauncher.getHotseat(); 2029 if (hotseat.isAllAppsButtonRank( 2030 hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { 2031 return false; 2032 } 2033 } 2034 2035 mLauncher.showOutOfSpaceMessage(isHotseat); 2036 return false; 2037 } 2038 } 2039 return true; 2040 } 2041 2042 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, float 2043 distance, boolean considerTimeout) { 2044 if (distance > mMaxDistanceForFolderCreation) return false; 2045 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2046 2047 if (dropOverView != null) { 2048 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2049 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2050 return false; 2051 } 2052 } 2053 2054 boolean hasntMoved = false; 2055 if (mDragInfo != null) { 2056 hasntMoved = dropOverView == mDragInfo.cell; 2057 } 2058 2059 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2060 return false; 2061 } 2062 2063 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2064 boolean willBecomeShortcut = 2065 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2066 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2067 2068 return (aboveShortcut && willBecomeShortcut); 2069 } 2070 2071 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell, 2072 float distance) { 2073 if (distance > mMaxDistanceForFolderCreation) return false; 2074 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2075 2076 if (dropOverView != null) { 2077 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2078 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2079 return false; 2080 } 2081 } 2082 2083 if (dropOverView instanceof FolderIcon) { 2084 FolderIcon fi = (FolderIcon) dropOverView; 2085 if (fi.acceptDrop(dragInfo)) { 2086 return true; 2087 } 2088 } 2089 return false; 2090 } 2091 2092 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2093 int[] targetCell, float distance, boolean external, DragView dragView, 2094 Runnable postAnimationRunnable) { 2095 if (distance > mMaxDistanceForFolderCreation) return false; 2096 View v = target.getChildAt(targetCell[0], targetCell[1]); 2097 2098 boolean hasntMoved = false; 2099 if (mDragInfo != null) { 2100 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2101 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2102 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2103 } 2104 2105 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2106 mCreateUserFolderOnDrop = false; 2107 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 2108 2109 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2110 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2111 2112 if (aboveShortcut && willBecomeShortcut) { 2113 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2114 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2115 // if the drag started here, we need to remove it from the workspace 2116 if (!external) { 2117 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2118 } 2119 2120 Rect folderLocation = new Rect(); 2121 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2122 target.removeView(v); 2123 2124 FolderIcon fi = 2125 mLauncher.addFolder(target, container, screen, targetCell[0], targetCell[1]); 2126 destInfo.cellX = -1; 2127 destInfo.cellY = -1; 2128 sourceInfo.cellX = -1; 2129 sourceInfo.cellY = -1; 2130 2131 // If the dragView is null, we can't animate 2132 boolean animate = dragView != null; 2133 if (animate) { 2134 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2135 postAnimationRunnable); 2136 } else { 2137 fi.addItem(destInfo); 2138 fi.addItem(sourceInfo); 2139 } 2140 return true; 2141 } 2142 return false; 2143 } 2144 2145 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2146 float distance, DragObject d, boolean external) { 2147 if (distance > mMaxDistanceForFolderCreation) return false; 2148 2149 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2150 if (!mAddToExistingFolderOnDrop) return false; 2151 mAddToExistingFolderOnDrop = false; 2152 2153 if (dropOverView instanceof FolderIcon) { 2154 FolderIcon fi = (FolderIcon) dropOverView; 2155 if (fi.acceptDrop(d.dragInfo)) { 2156 fi.onDrop(d); 2157 2158 // if the drag started here, we need to remove it from the workspace 2159 if (!external) { 2160 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2161 } 2162 return true; 2163 } 2164 } 2165 return false; 2166 } 2167 2168 public void onDrop(final DragObject d) { 2169 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2170 mDragViewVisualCenter); 2171 2172 CellLayout dropTargetLayout = mDropToLayout; 2173 2174 // We want the point to be mapped to the dragTarget. 2175 if (dropTargetLayout != null) { 2176 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 2177 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2178 } else { 2179 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 2180 } 2181 } 2182 2183 int snapScreen = -1; 2184 boolean resizeOnDrop = false; 2185 if (d.dragSource != this) { 2186 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2187 (int) mDragViewVisualCenter[1] }; 2188 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2189 } else if (mDragInfo != null) { 2190 final View cell = mDragInfo.cell; 2191 2192 Runnable resizeRunnable = null; 2193 if (dropTargetLayout != null) { 2194 // Move internally 2195 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2196 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2197 long container = hasMovedIntoHotseat ? 2198 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2199 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2200 int screen = (mTargetCell[0] < 0) ? 2201 mDragInfo.screen : indexOfChild(dropTargetLayout); 2202 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2203 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2204 // First we find the cell nearest to point at which the item is 2205 // dropped, without any consideration to whether there is an item there. 2206 2207 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2208 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2209 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2210 mDragViewVisualCenter[1], mTargetCell); 2211 2212 // If the item being dropped is a shortcut and the nearest drop 2213 // cell also contains a shortcut, then create a folder with the two shortcuts. 2214 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2215 dropTargetLayout, mTargetCell, distance, false, d.dragView, null)) { 2216 return; 2217 } 2218 2219 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, 2220 distance, d, false)) { 2221 return; 2222 } 2223 2224 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2225 // we need to find the nearest cell location that is vacant 2226 ItemInfo item = (ItemInfo) d.dragInfo; 2227 int minSpanX = item.spanX; 2228 int minSpanY = item.spanY; 2229 if (item.minSpanX > 0 && item.minSpanY > 0) { 2230 minSpanX = item.minSpanX; 2231 minSpanY = item.minSpanY; 2232 } 2233 2234 int[] resultSpan = new int[2]; 2235 mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], 2236 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, cell, 2237 mTargetCell, resultSpan, CellLayout.MODE_ON_DROP); 2238 2239 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2240 2241 // if the widget resizes on drop 2242 if (foundCell && (cell instanceof AppWidgetHostView) && 2243 (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY)) { 2244 resizeOnDrop = true; 2245 item.spanX = resultSpan[0]; 2246 item.spanY = resultSpan[1]; 2247 AppWidgetHostView awhv = (AppWidgetHostView) cell; 2248 AppWidgetResizeFrame.updateWidgetSizeRanges(awhv, mLauncher, resultSpan[0], 2249 resultSpan[1]); 2250 } 2251 2252 if (mCurrentPage != screen && !hasMovedIntoHotseat) { 2253 snapScreen = screen; 2254 snapToPage(screen); 2255 } 2256 2257 if (foundCell) { 2258 final ItemInfo info = (ItemInfo) cell.getTag(); 2259 if (hasMovedLayouts) { 2260 // Reparent the view 2261 getParentCellLayoutForView(cell).removeView(cell); 2262 addInScreen(cell, container, screen, mTargetCell[0], mTargetCell[1], 2263 info.spanX, info.spanY); 2264 } 2265 2266 // update the item's position after drop 2267 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2268 lp.cellX = lp.tmpCellX = mTargetCell[0]; 2269 lp.cellY = lp.tmpCellY = mTargetCell[1]; 2270 lp.cellHSpan = item.spanX; 2271 lp.cellVSpan = item.spanY; 2272 lp.isLockedToGrid = true; 2273 cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screen, 2274 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2275 2276 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2277 cell instanceof LauncherAppWidgetHostView) { 2278 final CellLayout cellLayout = dropTargetLayout; 2279 // We post this call so that the widget has a chance to be placed 2280 // in its final location 2281 2282 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2283 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2284 if (pinfo != null && 2285 pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2286 final Runnable addResizeFrame = new Runnable() { 2287 public void run() { 2288 DragLayer dragLayer = mLauncher.getDragLayer(); 2289 dragLayer.addResizeFrame(info, hostView, cellLayout); 2290 } 2291 }; 2292 resizeRunnable = (new Runnable() { 2293 public void run() { 2294 if (!isPageMoving()) { 2295 addResizeFrame.run(); 2296 } else { 2297 mDelayedResizeRunnable = addResizeFrame; 2298 } 2299 } 2300 }); 2301 } 2302 } 2303 2304 LauncherModel.moveItemInDatabase(mLauncher, info, container, screen, lp.cellX, 2305 lp.cellY); 2306 } else { 2307 // If we can't find a drop location, we return the item to its original position 2308 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2309 mTargetCell[0] = lp.cellX; 2310 mTargetCell[1] = lp.cellY; 2311 CellLayout layout = (CellLayout) cell.getParent().getParent(); 2312 layout.markCellsAsOccupiedForView(cell); 2313 } 2314 } 2315 2316 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2317 final Runnable finalResizeRunnable = resizeRunnable; 2318 // Prepare it to be animated into its new position 2319 // This must be called after the view has been re-parented 2320 final Runnable onCompleteRunnable = new Runnable() { 2321 @Override 2322 public void run() { 2323 mAnimatingViewIntoPlace = false; 2324 updateChildrenLayersEnabled(false); 2325 if (finalResizeRunnable != null) { 2326 finalResizeRunnable.run(); 2327 } 2328 } 2329 }; 2330 mAnimatingViewIntoPlace = true; 2331 if (d.dragView.hasDrawn()) { 2332 final ItemInfo info = (ItemInfo) cell.getTag(); 2333 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET) { 2334 int animationType = resizeOnDrop ? ANIMATE_INTO_POSITION_AND_RESIZE : 2335 ANIMATE_INTO_POSITION_AND_DISAPPEAR; 2336 animateWidgetDrop(info, parent, d.dragView, 2337 onCompleteRunnable, animationType, cell, false); 2338 } else { 2339 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2340 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2341 onCompleteRunnable, this); 2342 } 2343 } else { 2344 d.deferDragViewCleanupPostAnimation = false; 2345 cell.setVisibility(VISIBLE); 2346 } 2347 parent.onDropChild(cell); 2348 } 2349 } 2350 2351 public void setFinalScrollForPageChange(int screen) { 2352 if (screen >= 0) { 2353 mSavedScrollX = getScrollX(); 2354 CellLayout cl = (CellLayout) getChildAt(screen); 2355 mSavedTranslationX = cl.getTranslationX(); 2356 mSavedRotationY = cl.getRotationY(); 2357 final int newX = getChildOffset(screen) - getRelativeChildOffset(screen); 2358 setScrollX(newX); 2359 cl.setTranslationX(0f); 2360 cl.setRotationY(0f); 2361 } 2362 } 2363 2364 public void resetFinalScrollForPageChange(int screen) { 2365 if (screen >= 0) { 2366 CellLayout cl = (CellLayout) getChildAt(screen); 2367 setScrollX(mSavedScrollX); 2368 cl.setTranslationX(mSavedTranslationX); 2369 cl.setRotationY(mSavedRotationY); 2370 } 2371 } 2372 2373 public void getViewLocationRelativeToSelf(View v, int[] location) { 2374 getLocationInWindow(location); 2375 int x = location[0]; 2376 int y = location[1]; 2377 2378 v.getLocationInWindow(location); 2379 int vX = location[0]; 2380 int vY = location[1]; 2381 2382 location[0] = vX - x; 2383 location[1] = vY - y; 2384 } 2385 2386 public void onDragEnter(DragObject d) { 2387 mDragEnforcer.onDragEnter(); 2388 mCreateUserFolderOnDrop = false; 2389 mAddToExistingFolderOnDrop = false; 2390 2391 mDropToLayout = null; 2392 CellLayout layout = getCurrentDropLayout(); 2393 setCurrentDropLayout(layout); 2394 setCurrentDragOverlappingLayout(layout); 2395 2396 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2397 // don't need to show the outlines 2398 if (LauncherApplication.isScreenLarge()) { 2399 showOutlines(); 2400 } 2401 } 2402 2403 static Rect getCellLayoutMetrics(Launcher launcher, int orientation) { 2404 Resources res = launcher.getResources(); 2405 Display display = launcher.getWindowManager().getDefaultDisplay(); 2406 Point smallestSize = new Point(); 2407 Point largestSize = new Point(); 2408 display.getCurrentSizeRange(smallestSize, largestSize); 2409 if (orientation == CellLayout.LANDSCAPE) { 2410 if (mLandscapeCellLayoutMetrics == null) { 2411 int paddingLeft = res.getDimensionPixelSize(R.dimen.workspace_left_padding_land); 2412 int paddingRight = res.getDimensionPixelSize(R.dimen.workspace_right_padding_land); 2413 int paddingTop = res.getDimensionPixelSize(R.dimen.workspace_top_padding_land); 2414 int paddingBottom = res.getDimensionPixelSize(R.dimen.workspace_bottom_padding_land); 2415 int width = largestSize.x - paddingLeft - paddingRight; 2416 int height = smallestSize.y - paddingTop - paddingBottom; 2417 mLandscapeCellLayoutMetrics = new Rect(); 2418 CellLayout.getMetrics(mLandscapeCellLayoutMetrics, res, 2419 width, height, LauncherModel.getCellCountX(), LauncherModel.getCellCountY(), 2420 orientation); 2421 } 2422 return mLandscapeCellLayoutMetrics; 2423 } else if (orientation == CellLayout.PORTRAIT) { 2424 if (mPortraitCellLayoutMetrics == null) { 2425 int paddingLeft = res.getDimensionPixelSize(R.dimen.workspace_left_padding_land); 2426 int paddingRight = res.getDimensionPixelSize(R.dimen.workspace_right_padding_land); 2427 int paddingTop = res.getDimensionPixelSize(R.dimen.workspace_top_padding_land); 2428 int paddingBottom = res.getDimensionPixelSize(R.dimen.workspace_bottom_padding_land); 2429 int width = smallestSize.x - paddingLeft - paddingRight; 2430 int height = largestSize.y - paddingTop - paddingBottom; 2431 mPortraitCellLayoutMetrics = new Rect(); 2432 CellLayout.getMetrics(mPortraitCellLayoutMetrics, res, 2433 width, height, LauncherModel.getCellCountX(), LauncherModel.getCellCountY(), 2434 orientation); 2435 } 2436 return mPortraitCellLayoutMetrics; 2437 } 2438 return null; 2439 } 2440 2441 public void onDragExit(DragObject d) { 2442 mDragEnforcer.onDragExit(); 2443 2444 // Here we store the final page that will be dropped to, if the workspace in fact 2445 // receives the drop 2446 if (mInScrollArea) { 2447 if (isPageMoving()) { 2448 // If the user drops while the page is scrolling, we should use that page as the 2449 // destination instead of the page that is being hovered over. 2450 mDropToLayout = (CellLayout) getPageAt(getNextPage()); 2451 } else { 2452 mDropToLayout = mDragOverlappingLayout; 2453 } 2454 } else { 2455 mDropToLayout = mDragTargetLayout; 2456 } 2457 2458 if (mDragMode == DRAG_MODE_CREATE_FOLDER) { 2459 mCreateUserFolderOnDrop = true; 2460 } else if (mDragMode == DRAG_MODE_ADD_TO_FOLDER) { 2461 mAddToExistingFolderOnDrop = true; 2462 } 2463 2464 // Reset the scroll area and previous drag target 2465 onResetScrollArea(); 2466 setCurrentDropLayout(null); 2467 setCurrentDragOverlappingLayout(null); 2468 2469 mSpringLoadedDragController.cancel(); 2470 2471 if (!mIsPageMoving) { 2472 hideOutlines(); 2473 } 2474 } 2475 2476 void setCurrentDropLayout(CellLayout layout) { 2477 if (mDragTargetLayout != null) { 2478 mDragTargetLayout.revertTempState(); 2479 mDragTargetLayout.onDragExit(); 2480 } 2481 mDragTargetLayout = layout; 2482 if (mDragTargetLayout != null) { 2483 mDragTargetLayout.onDragEnter(); 2484 } 2485 cleanupReorder(true); 2486 cleanupFolderCreation(); 2487 setCurrentDropOverCell(-1, -1); 2488 } 2489 2490 void setCurrentDragOverlappingLayout(CellLayout layout) { 2491 if (mDragOverlappingLayout != null) { 2492 mDragOverlappingLayout.setIsDragOverlapping(false); 2493 } 2494 mDragOverlappingLayout = layout; 2495 if (mDragOverlappingLayout != null) { 2496 mDragOverlappingLayout.setIsDragOverlapping(true); 2497 } 2498 invalidate(); 2499 } 2500 2501 void setCurrentDropOverCell(int x, int y) { 2502 if (x != mDragOverX || y != mDragOverY) { 2503 mDragOverX = x; 2504 mDragOverY = y; 2505 setDragMode(DRAG_MODE_NONE); 2506 } 2507 } 2508 2509 void setDragMode(int dragMode) { 2510 if (dragMode != mDragMode) { 2511 if (dragMode == DRAG_MODE_NONE) { 2512 cleanupAddToFolder(); 2513 // We don't want to cancel the re-order alarm every time the target cell changes 2514 // as this feels to slow / unresponsive. 2515 cleanupReorder(false); 2516 cleanupFolderCreation(); 2517 } else if (dragMode == DRAG_MODE_ADD_TO_FOLDER) { 2518 cleanupReorder(true); 2519 cleanupFolderCreation(); 2520 } else if (dragMode == DRAG_MODE_CREATE_FOLDER) { 2521 cleanupAddToFolder(); 2522 cleanupReorder(true); 2523 } else if (dragMode == DRAG_MODE_REORDER) { 2524 cleanupAddToFolder(); 2525 cleanupFolderCreation(); 2526 } 2527 mDragMode = dragMode; 2528 } 2529 } 2530 2531 private void cleanupFolderCreation() { 2532 if (mDragFolderRingAnimator != null) { 2533 mDragFolderRingAnimator.animateToNaturalState(); 2534 } 2535 mFolderCreationAlarm.cancelAlarm(); 2536 } 2537 2538 private void cleanupAddToFolder() { 2539 if (mDragOverFolderIcon != null) { 2540 mDragOverFolderIcon.onDragExit(null); 2541 mDragOverFolderIcon = null; 2542 } 2543 } 2544 2545 private void cleanupReorder(boolean cancelAlarm) { 2546 // Any pending reorders are canceled 2547 if (cancelAlarm) { 2548 mReorderAlarm.cancelAlarm(); 2549 } 2550 mLastReorderX = -1; 2551 mLastReorderY = -1; 2552 } 2553 2554 public DropTarget getDropTargetDelegate(DragObject d) { 2555 return null; 2556 } 2557 2558 /* 2559 * 2560 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2561 * coordinate space. The argument xy is modified with the return result. 2562 * 2563 */ 2564 void mapPointFromSelfToChild(View v, float[] xy) { 2565 mapPointFromSelfToChild(v, xy, null); 2566 } 2567 2568 /* 2569 * 2570 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2571 * coordinate space. The argument xy is modified with the return result. 2572 * 2573 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2574 * computing it itself; we use this to avoid redundant matrix inversions in 2575 * findMatchingPageForDragOver 2576 * 2577 */ 2578 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2579 if (cachedInverseMatrix == null) { 2580 v.getMatrix().invert(mTempInverseMatrix); 2581 cachedInverseMatrix = mTempInverseMatrix; 2582 } 2583 int scrollX = getScrollX(); 2584 if (mNextPage != INVALID_PAGE) { 2585 scrollX = mScroller.getFinalX(); 2586 } 2587 xy[0] = xy[0] + scrollX - v.getLeft(); 2588 xy[1] = xy[1] + getScrollY() - v.getTop(); 2589 cachedInverseMatrix.mapPoints(xy); 2590 } 2591 2592 2593 void mapPointFromSelfToHotseatLayout(Hotseat hotseat, float[] xy) { 2594 hotseat.getLayout().getMatrix().invert(mTempInverseMatrix); 2595 xy[0] = xy[0] - hotseat.getLeft() - hotseat.getLayout().getLeft(); 2596 xy[1] = xy[1] - hotseat.getTop() - hotseat.getLayout().getTop(); 2597 mTempInverseMatrix.mapPoints(xy); 2598 } 2599 2600 /* 2601 * 2602 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2603 * the parent View's coordinate space. The argument xy is modified with the return result. 2604 * 2605 */ 2606 void mapPointFromChildToSelf(View v, float[] xy) { 2607 v.getMatrix().mapPoints(xy); 2608 int scrollX = getScrollX(); 2609 if (mNextPage != INVALID_PAGE) { 2610 scrollX = mScroller.getFinalX(); 2611 } 2612 xy[0] -= (scrollX - v.getLeft()); 2613 xy[1] -= (getScrollY() - v.getTop()); 2614 } 2615 2616 static private float squaredDistance(float[] point1, float[] point2) { 2617 float distanceX = point1[0] - point2[0]; 2618 float distanceY = point2[1] - point2[1]; 2619 return distanceX * distanceX + distanceY * distanceY; 2620 } 2621 2622 /* 2623 * 2624 * Returns true if the passed CellLayout cl overlaps with dragView 2625 * 2626 */ 2627 boolean overlaps(CellLayout cl, DragView dragView, 2628 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2629 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2630 final float[] draggedItemTopLeft = mTempDragCoordinates; 2631 draggedItemTopLeft[0] = dragViewX; 2632 draggedItemTopLeft[1] = dragViewY; 2633 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2634 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2635 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2636 2637 // Transform the dragged item's top left coordinates 2638 // to the CellLayout's local coordinates 2639 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2640 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2641 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2642 2643 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2644 // Transform the dragged item's bottom right coordinates 2645 // to the CellLayout's local coordinates 2646 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2647 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2648 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2649 2650 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2651 float overlap = (overlapRegionRight - overlapRegionLeft) * 2652 (overlapRegionBottom - overlapRegionTop); 2653 if (overlap > 0) { 2654 return true; 2655 } 2656 } 2657 } 2658 return false; 2659 } 2660 2661 /* 2662 * 2663 * This method returns the CellLayout that is currently being dragged to. In order to drag 2664 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2665 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2666 * 2667 * Return null if no CellLayout is currently being dragged over 2668 * 2669 */ 2670 private CellLayout findMatchingPageForDragOver( 2671 DragView dragView, float originX, float originY, boolean exact) { 2672 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2673 // with the item being dragged and then choose the one that's closest to the touch point 2674 final int screenCount = getChildCount(); 2675 CellLayout bestMatchingScreen = null; 2676 float smallestDistSoFar = Float.MAX_VALUE; 2677 2678 for (int i = 0; i < screenCount; i++) { 2679 CellLayout cl = (CellLayout) getChildAt(i); 2680 2681 final float[] touchXy = {originX, originY}; 2682 // Transform the touch coordinates to the CellLayout's local coordinates 2683 // If the touch point is within the bounds of the cell layout, we can return immediately 2684 cl.getMatrix().invert(mTempInverseMatrix); 2685 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2686 2687 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2688 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2689 return cl; 2690 } 2691 2692 if (!exact) { 2693 // Get the center of the cell layout in screen coordinates 2694 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2695 cellLayoutCenter[0] = cl.getWidth()/2; 2696 cellLayoutCenter[1] = cl.getHeight()/2; 2697 mapPointFromChildToSelf(cl, cellLayoutCenter); 2698 2699 touchXy[0] = originX; 2700 touchXy[1] = originY; 2701 2702 // Calculate the distance between the center of the CellLayout 2703 // and the touch point 2704 float dist = squaredDistance(touchXy, cellLayoutCenter); 2705 2706 if (dist < smallestDistSoFar) { 2707 smallestDistSoFar = dist; 2708 bestMatchingScreen = cl; 2709 } 2710 } 2711 } 2712 return bestMatchingScreen; 2713 } 2714 2715 // This is used to compute the visual center of the dragView. This point is then 2716 // used to visualize drop locations and determine where to drop an item. The idea is that 2717 // the visual center represents the user's interpretation of where the item is, and hence 2718 // is the appropriate point to use when determining drop location. 2719 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2720 DragView dragView, float[] recycle) { 2721 float res[]; 2722 if (recycle == null) { 2723 res = new float[2]; 2724 } else { 2725 res = recycle; 2726 } 2727 2728 // First off, the drag view has been shifted in a way that is not represented in the 2729 // x and y values or the x/yOffsets. Here we account for that shift. 2730 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2731 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2732 2733 // These represent the visual top and left of drag view if a dragRect was provided. 2734 // If a dragRect was not provided, then they correspond to the actual view left and 2735 // top, as the dragRect is in that case taken to be the entire dragView. 2736 // R.dimen.dragViewOffsetY. 2737 int left = x - xOffset; 2738 int top = y - yOffset; 2739 2740 // In order to find the visual center, we shift by half the dragRect 2741 res[0] = left + dragView.getDragRegion().width() / 2; 2742 res[1] = top + dragView.getDragRegion().height() / 2; 2743 2744 return res; 2745 } 2746 2747 private boolean isDragWidget(DragObject d) { 2748 return (d.dragInfo instanceof LauncherAppWidgetInfo || 2749 d.dragInfo instanceof PendingAddWidgetInfo); 2750 } 2751 private boolean isExternalDragWidget(DragObject d) { 2752 return d.dragSource != this && isDragWidget(d); 2753 } 2754 2755 public void onDragOver(DragObject d) { 2756 // Skip drag over events while we are dragging over side pages 2757 if (mInScrollArea || mIsSwitchingState || mState == State.SMALL) return; 2758 2759 Rect r = new Rect(); 2760 CellLayout layout = null; 2761 ItemInfo item = (ItemInfo) d.dragInfo; 2762 2763 // Ensure that we have proper spans for the item that we are dropping 2764 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2765 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2766 d.dragView, mDragViewVisualCenter); 2767 2768 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2769 // Identify whether we have dragged over a side page 2770 if (isSmall()) { 2771 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 2772 mLauncher.getHotseat().getHitRect(r); 2773 if (r.contains(d.x, d.y)) { 2774 layout = mLauncher.getHotseat().getLayout(); 2775 } 2776 } 2777 if (layout == null) { 2778 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false); 2779 } 2780 if (layout != mDragTargetLayout) { 2781 2782 setCurrentDropLayout(layout); 2783 setCurrentDragOverlappingLayout(layout); 2784 2785 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 2786 if (isInSpringLoadedMode) { 2787 if (mLauncher.isHotseatLayout(layout)) { 2788 mSpringLoadedDragController.cancel(); 2789 } else { 2790 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2791 } 2792 } 2793 } 2794 } else { 2795 // Test to see if we are over the hotseat otherwise just use the current page 2796 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 2797 mLauncher.getHotseat().getHitRect(r); 2798 if (r.contains(d.x, d.y)) { 2799 layout = mLauncher.getHotseat().getLayout(); 2800 } 2801 } 2802 if (layout == null) { 2803 layout = getCurrentDropLayout(); 2804 } 2805 if (layout != mDragTargetLayout) { 2806 setCurrentDropLayout(layout); 2807 setCurrentDragOverlappingLayout(layout); 2808 } 2809 } 2810 2811 // Handle the drag over 2812 if (mDragTargetLayout != null) { 2813 // We want the point to be mapped to the dragTarget. 2814 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2815 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2816 } else { 2817 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2818 } 2819 2820 ItemInfo info = (ItemInfo) d.dragInfo; 2821 2822 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2823 (int) mDragViewVisualCenter[1], item.spanX, item.spanY, 2824 mDragTargetLayout, mTargetCell); 2825 2826 setCurrentDropOverCell(mTargetCell[0], mTargetCell[1]); 2827 2828 float targetCellDistance = mDragTargetLayout.getDistanceFromCell( 2829 mDragViewVisualCenter[0], mDragViewVisualCenter[1], mTargetCell); 2830 2831 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2832 mTargetCell[1]); 2833 2834 manageFolderFeedback(info, mDragTargetLayout, mTargetCell, 2835 targetCellDistance, dragOverView); 2836 2837 int minSpanX = item.spanX; 2838 int minSpanY = item.spanY; 2839 if (item.minSpanX > 0 && item.minSpanY > 0) { 2840 minSpanX = item.minSpanX; 2841 minSpanY = item.minSpanY; 2842 } 2843 2844 boolean nearestDropOccupied = mDragTargetLayout.isNearestDropLocationOccupied((int) 2845 mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], item.spanX, 2846 item.spanY, child, mTargetCell); 2847 2848 if (!nearestDropOccupied) { 2849 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2850 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2851 mTargetCell[0], mTargetCell[1], item.spanX, item.spanY, false, 2852 d.dragView.getDragVisualizeOffset(), d.dragView.getDragRegion()); 2853 } else if ((mDragMode == DRAG_MODE_NONE || mDragMode == DRAG_MODE_REORDER) 2854 && !mReorderAlarm.alarmPending() && (mLastReorderX != mTargetCell[0] || 2855 mLastReorderY != mTargetCell[1])) { 2856 2857 // Otherwise, if we aren't adding to or creating a folder and there's no pending 2858 // reorder, then we schedule a reorder 2859 ReorderAlarmListener listener = new ReorderAlarmListener(mDragViewVisualCenter, 2860 minSpanX, minSpanY, item.spanX, item.spanY, d.dragView, child); 2861 mReorderAlarm.setOnAlarmListener(listener); 2862 mReorderAlarm.setAlarm(REORDER_TIMEOUT); 2863 } 2864 2865 if (mDragMode == DRAG_MODE_CREATE_FOLDER || mDragMode == DRAG_MODE_ADD_TO_FOLDER || 2866 !nearestDropOccupied) { 2867 if (mDragTargetLayout != null) { 2868 mDragTargetLayout.revertTempState(); 2869 } 2870 } 2871 } 2872 } 2873 2874 private void manageFolderFeedback(ItemInfo info, CellLayout targetLayout, 2875 int[] targetCell, float distance, View dragOverView) { 2876 boolean userFolderPending = willCreateUserFolder(info, targetLayout, targetCell, distance, 2877 false); 2878 2879 if (mDragMode == DRAG_MODE_NONE && userFolderPending && 2880 !mFolderCreationAlarm.alarmPending()) { 2881 mFolderCreationAlarm.setOnAlarmListener(new 2882 FolderCreationAlarmListener(targetLayout, targetCell[0], targetCell[1])); 2883 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2884 return; 2885 } 2886 2887 boolean willAddToFolder = 2888 willAddToExistingUserFolder(info, targetLayout, targetCell, distance); 2889 2890 if (willAddToFolder && mDragMode == DRAG_MODE_NONE) { 2891 mDragOverFolderIcon = ((FolderIcon) dragOverView); 2892 mDragOverFolderIcon.onDragEnter(info); 2893 if (targetLayout != null) { 2894 targetLayout.clearDragOutlines(); 2895 } 2896 setDragMode(DRAG_MODE_ADD_TO_FOLDER); 2897 return; 2898 } 2899 2900 if (mDragMode == DRAG_MODE_ADD_TO_FOLDER && !willAddToFolder) { 2901 setDragMode(DRAG_MODE_NONE); 2902 } 2903 if (mDragMode == DRAG_MODE_CREATE_FOLDER && !userFolderPending) { 2904 setDragMode(DRAG_MODE_NONE); 2905 } 2906 2907 return; 2908 } 2909 2910 class FolderCreationAlarmListener implements OnAlarmListener { 2911 CellLayout layout; 2912 int cellX; 2913 int cellY; 2914 2915 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 2916 this.layout = layout; 2917 this.cellX = cellX; 2918 this.cellY = cellY; 2919 } 2920 2921 public void onAlarm(Alarm alarm) { 2922 if (mDragFolderRingAnimator == null) { 2923 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 2924 } 2925 mDragFolderRingAnimator.setCell(cellX, cellY); 2926 mDragFolderRingAnimator.setCellLayout(layout); 2927 mDragFolderRingAnimator.animateToAcceptState(); 2928 layout.showFolderAccept(mDragFolderRingAnimator); 2929 layout.clearDragOutlines(); 2930 setDragMode(DRAG_MODE_CREATE_FOLDER); 2931 } 2932 } 2933 2934 class ReorderAlarmListener implements OnAlarmListener { 2935 float[] dragViewCenter; 2936 int minSpanX, minSpanY, spanX, spanY; 2937 DragView dragView; 2938 View child; 2939 2940 public ReorderAlarmListener(float[] dragViewCenter, int minSpanX, int minSpanY, int spanX, 2941 int spanY, DragView dragView, View child) { 2942 this.dragViewCenter = dragViewCenter; 2943 this.minSpanX = minSpanX; 2944 this.minSpanY = minSpanY; 2945 this.spanX = spanX; 2946 this.spanY = spanY; 2947 this.child = child; 2948 this.dragView = dragView; 2949 } 2950 2951 public void onAlarm(Alarm alarm) { 2952 int[] resultSpan = new int[2]; 2953 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2954 (int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell); 2955 mLastReorderX = mTargetCell[0]; 2956 mLastReorderY = mTargetCell[1]; 2957 2958 mTargetCell = mDragTargetLayout.createArea((int) mDragViewVisualCenter[0], 2959 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2960 child, mTargetCell, resultSpan, CellLayout.MODE_DRAG_OVER); 2961 2962 if (mTargetCell[0] < 0 || mTargetCell[1] < 0) { 2963 mDragTargetLayout.revertTempState(); 2964 } else { 2965 setDragMode(DRAG_MODE_REORDER); 2966 } 2967 2968 boolean resize = resultSpan[0] != spanX || resultSpan[1] != spanY; 2969 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2970 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2971 mTargetCell[0], mTargetCell[1], resultSpan[0], resultSpan[1], resize, 2972 dragView.getDragVisualizeOffset(), dragView.getDragRegion()); 2973 } 2974 } 2975 2976 @Override 2977 public void getHitRect(Rect outRect) { 2978 // We want the workspace to have the whole area of the display (it will find the correct 2979 // cell layout to drop to in the existing drag/drop logic. 2980 outRect.set(0, 0, mDisplaySize.x, mDisplaySize.y); 2981 } 2982 2983 /** 2984 * Add the item specified by dragInfo to the given layout. 2985 * @return true if successful 2986 */ 2987 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2988 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2989 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2990 return true; 2991 } 2992 mLauncher.showOutOfSpaceMessage(mLauncher.isHotseatLayout(layout)); 2993 return false; 2994 } 2995 2996 private void onDropExternal(int[] touchXY, Object dragInfo, 2997 CellLayout cellLayout, boolean insertAtFirst) { 2998 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 2999 } 3000 3001 /** 3002 * Drop an item that didn't originate on one of the workspace screens. 3003 * It may have come from Launcher (e.g. from all apps or customize), or it may have 3004 * come from another app altogether. 3005 * 3006 * NOTE: This can also be called when we are outside of a drag event, when we want 3007 * to add an item to one of the workspace screens. 3008 */ 3009 private void onDropExternal(final int[] touchXY, final Object dragInfo, 3010 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 3011 final Runnable exitSpringLoadedRunnable = new Runnable() { 3012 @Override 3013 public void run() { 3014 mLauncher.exitSpringLoadedDragModeDelayed(true, false, null); 3015 } 3016 }; 3017 3018 ItemInfo info = (ItemInfo) dragInfo; 3019 int spanX = info.spanX; 3020 int spanY = info.spanY; 3021 if (mDragInfo != null) { 3022 spanX = mDragInfo.spanX; 3023 spanY = mDragInfo.spanY; 3024 } 3025 3026 final long container = mLauncher.isHotseatLayout(cellLayout) ? 3027 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 3028 LauncherSettings.Favorites.CONTAINER_DESKTOP; 3029 final int screen = indexOfChild(cellLayout); 3030 if (!mLauncher.isHotseatLayout(cellLayout) && screen != mCurrentPage 3031 && mState != State.SPRING_LOADED) { 3032 snapToPage(screen); 3033 } 3034 3035 if (info instanceof PendingAddItemInfo) { 3036 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 3037 3038 boolean findNearestVacantCell = true; 3039 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 3040 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3041 cellLayout, mTargetCell); 3042 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3043 mDragViewVisualCenter[1], mTargetCell); 3044 if (willCreateUserFolder((ItemInfo) d.dragInfo, cellLayout, mTargetCell, 3045 distance, true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 3046 cellLayout, mTargetCell, distance)) { 3047 findNearestVacantCell = false; 3048 } 3049 } 3050 3051 final ItemInfo item = (ItemInfo) d.dragInfo; 3052 boolean updateWidgetSize = false; 3053 if (findNearestVacantCell) { 3054 int minSpanX = item.spanX; 3055 int minSpanY = item.spanY; 3056 if (item.minSpanX > 0 && item.minSpanY > 0) { 3057 minSpanX = item.minSpanX; 3058 minSpanY = item.minSpanY; 3059 } 3060 int[] resultSpan = new int[2]; 3061 mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], 3062 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, info.spanX, info.spanY, 3063 null, mTargetCell, resultSpan, CellLayout.MODE_ON_DROP_EXTERNAL); 3064 3065 if (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY) { 3066 updateWidgetSize = true; 3067 } 3068 item.spanX = resultSpan[0]; 3069 item.spanY = resultSpan[1]; 3070 } 3071 3072 Runnable onAnimationCompleteRunnable = new Runnable() { 3073 @Override 3074 public void run() { 3075 // When dragging and dropping from customization tray, we deal with creating 3076 // widgets/shortcuts/folders in a slightly different way 3077 switch (pendingInfo.itemType) { 3078 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 3079 int span[] = new int[2]; 3080 span[0] = item.spanX; 3081 span[1] = item.spanY; 3082 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, 3083 container, screen, mTargetCell, span, null); 3084 break; 3085 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3086 mLauncher.processShortcutFromDrop(pendingInfo.componentName, 3087 container, screen, mTargetCell, null); 3088 break; 3089 default: 3090 throw new IllegalStateException("Unknown item type: " + 3091 pendingInfo.itemType); 3092 } 3093 } 3094 }; 3095 View finalView = pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET 3096 ? ((PendingAddWidgetInfo) pendingInfo).boundWidget : null; 3097 3098 if (finalView instanceof AppWidgetHostView && updateWidgetSize) { 3099 AppWidgetHostView awhv = (AppWidgetHostView) finalView; 3100 AppWidgetResizeFrame.updateWidgetSizeRanges(awhv, mLauncher, item.spanX, 3101 item.spanY); 3102 } 3103 3104 int animationStyle = ANIMATE_INTO_POSITION_AND_DISAPPEAR; 3105 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && 3106 ((PendingAddWidgetInfo) pendingInfo).info.configure != null) { 3107 animationStyle = ANIMATE_INTO_POSITION_AND_REMAIN; 3108 } 3109 animateWidgetDrop(info, cellLayout, d.dragView, onAnimationCompleteRunnable, 3110 animationStyle, finalView, true); 3111 } else { 3112 // This is for other drag/drop cases, like dragging from All Apps 3113 View view = null; 3114 3115 switch (info.itemType) { 3116 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 3117 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3118 if (info.container == NO_ID && info instanceof ApplicationInfo) { 3119 // Came from all apps -- make a copy 3120 info = new ShortcutInfo((ApplicationInfo) info); 3121 } 3122 view = mLauncher.createShortcut(R.layout.application, cellLayout, 3123 (ShortcutInfo) info); 3124 break; 3125 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 3126 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 3127 (FolderInfo) info, mIconCache); 3128 break; 3129 default: 3130 throw new IllegalStateException("Unknown item type: " + info.itemType); 3131 } 3132 3133 // First we find the cell nearest to point at which the item is 3134 // dropped, without any consideration to whether there is an item there. 3135 if (touchXY != null) { 3136 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3137 cellLayout, mTargetCell); 3138 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3139 mDragViewVisualCenter[1], mTargetCell); 3140 d.postAnimationRunnable = exitSpringLoadedRunnable; 3141 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, distance, 3142 true, d.dragView, d.postAnimationRunnable)) { 3143 return; 3144 } 3145 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, distance, d, 3146 true)) { 3147 return; 3148 } 3149 } 3150 3151 if (touchXY != null) { 3152 // when dragging and dropping, just find the closest free spot 3153 mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], 3154 (int) mDragViewVisualCenter[1], 1, 1, 1, 1, 3155 null, mTargetCell, null, CellLayout.MODE_ON_DROP_EXTERNAL); 3156 } else { 3157 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3158 } 3159 addInScreen(view, container, screen, mTargetCell[0], mTargetCell[1], info.spanX, 3160 info.spanY, insertAtFirst); 3161 cellLayout.onDropChild(view); 3162 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 3163 cellLayout.getShortcutsAndWidgets().measureChild(view); 3164 3165 3166 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, 3167 lp.cellX, lp.cellY); 3168 3169 if (d.dragView != null) { 3170 // We wrap the animation call in the temporary set and reset of the current 3171 // cellLayout to its final transform -- this means we animate the drag view to 3172 // the correct final location. 3173 setFinalTransitionTransform(cellLayout); 3174 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 3175 exitSpringLoadedRunnable); 3176 resetTransitionTransform(cellLayout); 3177 } 3178 } 3179 } 3180 3181 public Bitmap createWidgetBitmap(ItemInfo widgetInfo, View layout) { 3182 int[] unScaledSize = mLauncher.getWorkspace().estimateItemSize(widgetInfo.spanX, 3183 widgetInfo.spanY, widgetInfo, false); 3184 int visibility = layout.getVisibility(); 3185 layout.setVisibility(VISIBLE); 3186 3187 int width = MeasureSpec.makeMeasureSpec(unScaledSize[0], MeasureSpec.EXACTLY); 3188 int height = MeasureSpec.makeMeasureSpec(unScaledSize[1], MeasureSpec.EXACTLY); 3189 Bitmap b = Bitmap.createBitmap(unScaledSize[0], unScaledSize[1], 3190 Bitmap.Config.ARGB_8888); 3191 Canvas c = new Canvas(b); 3192 3193 layout.measure(width, height); 3194 layout.layout(0, 0, unScaledSize[0], unScaledSize[1]); 3195 layout.draw(c); 3196 c.setBitmap(null); 3197 layout.setVisibility(visibility); 3198 return b; 3199 } 3200 3201 private void getFinalPositionForDropAnimation(int[] loc, float[] scaleXY, 3202 DragView dragView, CellLayout layout, ItemInfo info, int[] targetCell, 3203 boolean external, boolean scale) { 3204 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 3205 // location and size on the home screen. 3206 int spanX = info.spanX; 3207 int spanY = info.spanY; 3208 3209 Rect r = estimateItemPosition(layout, info, targetCell[0], targetCell[1], spanX, spanY); 3210 loc[0] = r.left; 3211 loc[1] = r.top; 3212 3213 setFinalTransitionTransform(layout); 3214 float cellLayoutScale = 3215 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(layout, loc); 3216 resetTransitionTransform(layout); 3217 3218 float dragViewScaleX; 3219 float dragViewScaleY; 3220 if (scale) { 3221 dragViewScaleX = (1.0f * r.width()) / dragView.getMeasuredWidth(); 3222 dragViewScaleY = (1.0f * r.height()) / dragView.getMeasuredHeight(); 3223 } else { 3224 dragViewScaleX = 1f; 3225 dragViewScaleY = 1f; 3226 } 3227 3228 // The animation will scale the dragView about its center, so we need to center about 3229 // the final location. 3230 loc[0] -= (dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 3231 loc[1] -= (dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 3232 3233 scaleXY[0] = dragViewScaleX * cellLayoutScale; 3234 scaleXY[1] = dragViewScaleY * cellLayoutScale; 3235 } 3236 3237 public void animateWidgetDrop(ItemInfo info, CellLayout cellLayout, DragView dragView, 3238 final Runnable onCompleteRunnable, int animationType, final View finalView, 3239 boolean external) { 3240 Rect from = new Rect(); 3241 mLauncher.getDragLayer().getViewRectRelativeToSelf(dragView, from); 3242 3243 int[] finalPos = new int[2]; 3244 float scaleXY[] = new float[2]; 3245 boolean scalePreview = !(info instanceof PendingAddShortcutInfo); 3246 getFinalPositionForDropAnimation(finalPos, scaleXY, dragView, cellLayout, info, mTargetCell, 3247 external, scalePreview); 3248 3249 Resources res = mLauncher.getResources(); 3250 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration) - 200; 3251 3252 // In the case where we've prebound the widget, we remove it from the DragLayer 3253 if (finalView instanceof AppWidgetHostView && external) { 3254 Log.d(TAG, "6557954 Animate widget drop, final view is appWidgetHostView"); 3255 mLauncher.getDragLayer().removeView(finalView); 3256 } 3257 if ((animationType == ANIMATE_INTO_POSITION_AND_RESIZE || external) && finalView != null) { 3258 Bitmap crossFadeBitmap = createWidgetBitmap(info, finalView); 3259 dragView.setCrossFadeBitmap(crossFadeBitmap); 3260 dragView.crossFade((int) (duration * 0.8f)); 3261 } else if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && external) { 3262 scaleXY[0] = scaleXY[1] = Math.min(scaleXY[0], scaleXY[1]); 3263 } 3264 3265 DragLayer dragLayer = mLauncher.getDragLayer(); 3266 if (animationType == CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION) { 3267 mLauncher.getDragLayer().animateViewIntoPosition(dragView, finalPos, 0f, 0.1f, 0.1f, 3268 DragLayer.ANIMATION_END_DISAPPEAR, onCompleteRunnable, duration); 3269 } else { 3270 int endStyle; 3271 if (animationType == ANIMATE_INTO_POSITION_AND_REMAIN) { 3272 endStyle = DragLayer.ANIMATION_END_REMAIN_VISIBLE; 3273 } else { 3274 endStyle = DragLayer.ANIMATION_END_DISAPPEAR;; 3275 } 3276 3277 Runnable onComplete = new Runnable() { 3278 @Override 3279 public void run() { 3280 if (finalView != null) { 3281 finalView.setVisibility(VISIBLE); 3282 } 3283 if (onCompleteRunnable != null) { 3284 onCompleteRunnable.run(); 3285 } 3286 } 3287 }; 3288 dragLayer.animateViewIntoPosition(dragView, from.left, from.top, finalPos[0], 3289 finalPos[1], 1, 1, 1, scaleXY[0], scaleXY[1], onComplete, endStyle, 3290 duration, this); 3291 } 3292 } 3293 3294 public void setFinalTransitionTransform(CellLayout layout) { 3295 if (isSwitchingState()) { 3296 int index = indexOfChild(layout); 3297 mCurrentScaleX = layout.getScaleX(); 3298 mCurrentScaleY = layout.getScaleY(); 3299 mCurrentTranslationX = layout.getTranslationX(); 3300 mCurrentTranslationY = layout.getTranslationY(); 3301 mCurrentRotationY = layout.getRotationY(); 3302 layout.setScaleX(mNewScaleXs[index]); 3303 layout.setScaleY(mNewScaleYs[index]); 3304 layout.setTranslationX(mNewTranslationXs[index]); 3305 layout.setTranslationY(mNewTranslationYs[index]); 3306 layout.setRotationY(mNewRotationYs[index]); 3307 } 3308 } 3309 public void resetTransitionTransform(CellLayout layout) { 3310 if (isSwitchingState()) { 3311 mCurrentScaleX = layout.getScaleX(); 3312 mCurrentScaleY = layout.getScaleY(); 3313 mCurrentTranslationX = layout.getTranslationX(); 3314 mCurrentTranslationY = layout.getTranslationY(); 3315 mCurrentRotationY = layout.getRotationY(); 3316 layout.setScaleX(mCurrentScaleX); 3317 layout.setScaleY(mCurrentScaleY); 3318 layout.setTranslationX(mCurrentTranslationX); 3319 layout.setTranslationY(mCurrentTranslationY); 3320 layout.setRotationY(mCurrentRotationY); 3321 } 3322 } 3323 3324 /** 3325 * Return the current {@link CellLayout}, correctly picking the destination 3326 * screen while a scroll is in progress. 3327 */ 3328 public CellLayout getCurrentDropLayout() { 3329 return (CellLayout) getChildAt(getNextPage()); 3330 } 3331 3332 /** 3333 * Return the current CellInfo describing our current drag; this method exists 3334 * so that Launcher can sync this object with the correct info when the activity is created/ 3335 * destroyed 3336 * 3337 */ 3338 public CellLayout.CellInfo getDragInfo() { 3339 return mDragInfo; 3340 } 3341 3342 /** 3343 * Calculate the nearest cell where the given object would be dropped. 3344 * 3345 * pixelX and pixelY should be in the coordinate system of layout 3346 */ 3347 private int[] findNearestArea(int pixelX, int pixelY, 3348 int spanX, int spanY, CellLayout layout, int[] recycle) { 3349 return layout.findNearestArea( 3350 pixelX, pixelY, spanX, spanY, recycle); 3351 } 3352 3353 void setup(DragController dragController) { 3354 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3355 mDragController = dragController; 3356 3357 // hardware layers on children are enabled on startup, but should be disabled until 3358 // needed 3359 updateChildrenLayersEnabled(false); 3360 setWallpaperDimension(); 3361 } 3362 3363 /** 3364 * Called at the end of a drag which originated on the workspace. 3365 */ 3366 public void onDropCompleted(View target, DragObject d, boolean isFlingToDelete, 3367 boolean success) { 3368 if (success) { 3369 if (target != this) { 3370 if (mDragInfo != null) { 3371 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 3372 if (mDragInfo.cell instanceof DropTarget) { 3373 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 3374 } 3375 } 3376 } 3377 } else if (mDragInfo != null) { 3378 CellLayout cellLayout; 3379 if (mLauncher.isHotseatLayout(target)) { 3380 cellLayout = mLauncher.getHotseat().getLayout(); 3381 } else { 3382 cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3383 } 3384 cellLayout.onDropChild(mDragInfo.cell); 3385 } 3386 if (d.cancelled && mDragInfo.cell != null) { 3387 mDragInfo.cell.setVisibility(VISIBLE); 3388 } 3389 mDragOutline = null; 3390 mDragInfo = null; 3391 3392 // Hide the scrolling indicator after you pick up an item 3393 hideScrollingIndicator(false); 3394 } 3395 3396 void updateItemLocationsInDatabase(CellLayout cl) { 3397 int count = cl.getShortcutsAndWidgets().getChildCount(); 3398 3399 int screen = indexOfChild(cl); 3400 int container = Favorites.CONTAINER_DESKTOP; 3401 3402 if (mLauncher.isHotseatLayout(cl)) { 3403 screen = -1; 3404 container = Favorites.CONTAINER_HOTSEAT; 3405 } 3406 3407 for (int i = 0; i < count; i++) { 3408 View v = cl.getShortcutsAndWidgets().getChildAt(i); 3409 ItemInfo info = (ItemInfo) v.getTag(); 3410 // Null check required as the AllApps button doesn't have an item info 3411 if (info != null && info.requiresDbUpdate) { 3412 info.requiresDbUpdate = false; 3413 LauncherModel.modifyItemInDatabase(mLauncher, info, container, screen, info.cellX, 3414 info.cellY, info.spanX, info.spanY); 3415 } 3416 } 3417 } 3418 3419 @Override 3420 public boolean supportsFlingToDelete() { 3421 return true; 3422 } 3423 3424 @Override 3425 public void onFlingToDelete(DragObject d, int x, int y, PointF vec) { 3426 // Do nothing 3427 } 3428 3429 @Override 3430 public void onFlingToDeleteCompleted() { 3431 // Do nothing 3432 } 3433 3434 public boolean isDropEnabled() { 3435 return true; 3436 } 3437 3438 @Override 3439 protected void onRestoreInstanceState(Parcelable state) { 3440 super.onRestoreInstanceState(state); 3441 Launcher.setScreen(mCurrentPage); 3442 } 3443 3444 @Override 3445 protected void dispatchRestoreInstanceState(SparseArray<Parcelable> container) { 3446 // We don't dispatch restoreInstanceState to our children using this code path. 3447 // Some pages will be restored immediately as their items are bound immediately, and 3448 // others we will need to wait until after their items are bound. 3449 mSavedStates = container; 3450 } 3451 3452 public void restoreInstanceStateForChild(int child) { 3453 if (mSavedStates != null) { 3454 mRestoredPages.add(child); 3455 CellLayout cl = (CellLayout) getChildAt(child); 3456 cl.restoreInstanceState(mSavedStates); 3457 } 3458 } 3459 3460 public void restoreInstanceStateForRemainingPages() { 3461 int count = getChildCount(); 3462 for (int i = 0; i < count; i++) { 3463 if (!mRestoredPages.contains(i)) { 3464 restoreInstanceStateForChild(i); 3465 } 3466 } 3467 mRestoredPages.clear(); 3468 } 3469 3470 @Override 3471 public void scrollLeft() { 3472 if (!isSmall() && !mIsSwitchingState) { 3473 super.scrollLeft(); 3474 } 3475 Folder openFolder = getOpenFolder(); 3476 if (openFolder != null) { 3477 openFolder.completeDragExit(); 3478 } 3479 } 3480 3481 @Override 3482 public void scrollRight() { 3483 if (!isSmall() && !mIsSwitchingState) { 3484 super.scrollRight(); 3485 } 3486 Folder openFolder = getOpenFolder(); 3487 if (openFolder != null) { 3488 openFolder.completeDragExit(); 3489 } 3490 } 3491 3492 @Override 3493 public boolean onEnterScrollArea(int x, int y, int direction) { 3494 // Ignore the scroll area if we are dragging over the hot seat 3495 boolean isPortrait = !LauncherApplication.isScreenLandscape(getContext()); 3496 if (mLauncher.getHotseat() != null && isPortrait) { 3497 Rect r = new Rect(); 3498 mLauncher.getHotseat().getHitRect(r); 3499 if (r.contains(x, y)) { 3500 return false; 3501 } 3502 } 3503 3504 boolean result = false; 3505 if (!isSmall() && !mIsSwitchingState) { 3506 mInScrollArea = true; 3507 3508 final int page = getNextPage() + 3509 (direction == DragController.SCROLL_LEFT ? -1 : 1); 3510 3511 // We always want to exit the current layout to ensure parity of enter / exit 3512 setCurrentDropLayout(null); 3513 3514 if (0 <= page && page < getChildCount()) { 3515 CellLayout layout = (CellLayout) getChildAt(page); 3516 setCurrentDragOverlappingLayout(layout); 3517 3518 // Workspace is responsible for drawing the edge glow on adjacent pages, 3519 // so we need to redraw the workspace when this may have changed. 3520 invalidate(); 3521 result = true; 3522 } 3523 } 3524 return result; 3525 } 3526 3527 @Override 3528 public boolean onExitScrollArea() { 3529 boolean result = false; 3530 if (mInScrollArea) { 3531 invalidate(); 3532 CellLayout layout = getCurrentDropLayout(); 3533 setCurrentDropLayout(layout); 3534 setCurrentDragOverlappingLayout(layout); 3535 3536 result = true; 3537 mInScrollArea = false; 3538 } 3539 return result; 3540 } 3541 3542 private void onResetScrollArea() { 3543 setCurrentDragOverlappingLayout(null); 3544 mInScrollArea = false; 3545 } 3546 3547 /** 3548 * Returns a specific CellLayout 3549 */ 3550 CellLayout getParentCellLayoutForView(View v) { 3551 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3552 for (CellLayout layout : layouts) { 3553 if (layout.getShortcutsAndWidgets().indexOfChild(v) > -1) { 3554 return layout; 3555 } 3556 } 3557 return null; 3558 } 3559 3560 /** 3561 * Returns a list of all the CellLayouts in the workspace. 3562 */ 3563 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3564 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3565 int screenCount = getChildCount(); 3566 for (int screen = 0; screen < screenCount; screen++) { 3567 layouts.add(((CellLayout) getChildAt(screen))); 3568 } 3569 if (mLauncher.getHotseat() != null) { 3570 layouts.add(mLauncher.getHotseat().getLayout()); 3571 } 3572 return layouts; 3573 } 3574 3575 /** 3576 * We should only use this to search for specific children. Do not use this method to modify 3577 * ShortcutsAndWidgetsContainer directly. Includes ShortcutAndWidgetContainers from 3578 * the hotseat and workspace pages 3579 */ 3580 ArrayList<ShortcutAndWidgetContainer> getAllShortcutAndWidgetContainers() { 3581 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3582 new ArrayList<ShortcutAndWidgetContainer>(); 3583 int screenCount = getChildCount(); 3584 for (int screen = 0; screen < screenCount; screen++) { 3585 childrenLayouts.add(((CellLayout) getChildAt(screen)).getShortcutsAndWidgets()); 3586 } 3587 if (mLauncher.getHotseat() != null) { 3588 childrenLayouts.add(mLauncher.getHotseat().getLayout().getShortcutsAndWidgets()); 3589 } 3590 return childrenLayouts; 3591 } 3592 3593 public Folder getFolderForTag(Object tag) { 3594 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3595 getAllShortcutAndWidgetContainers(); 3596 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3597 int count = layout.getChildCount(); 3598 for (int i = 0; i < count; i++) { 3599 View child = layout.getChildAt(i); 3600 if (child instanceof Folder) { 3601 Folder f = (Folder) child; 3602 if (f.getInfo() == tag && f.getInfo().opened) { 3603 return f; 3604 } 3605 } 3606 } 3607 } 3608 return null; 3609 } 3610 3611 public View getViewForTag(Object tag) { 3612 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3613 getAllShortcutAndWidgetContainers(); 3614 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3615 int count = layout.getChildCount(); 3616 for (int i = 0; i < count; i++) { 3617 View child = layout.getChildAt(i); 3618 if (child.getTag() == tag) { 3619 return child; 3620 } 3621 } 3622 } 3623 return null; 3624 } 3625 3626 void clearDropTargets() { 3627 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3628 getAllShortcutAndWidgetContainers(); 3629 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3630 int childCount = layout.getChildCount(); 3631 for (int j = 0; j < childCount; j++) { 3632 View v = layout.getChildAt(j); 3633 if (v instanceof DropTarget) { 3634 mDragController.removeDropTarget((DropTarget) v); 3635 } 3636 } 3637 } 3638 } 3639 3640 void removeItems(final ArrayList<String> packages) { 3641 final HashSet<String> packageNames = new HashSet<String>(); 3642 packageNames.addAll(packages); 3643 3644 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3645 for (final CellLayout layoutParent: cellLayouts) { 3646 final ViewGroup layout = layoutParent.getShortcutsAndWidgets(); 3647 3648 // Avoid ANRs by treating each screen separately 3649 post(new Runnable() { 3650 public void run() { 3651 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3652 childrenToRemove.clear(); 3653 3654 int childCount = layout.getChildCount(); 3655 for (int j = 0; j < childCount; j++) { 3656 final View view = layout.getChildAt(j); 3657 Object tag = view.getTag(); 3658 3659 if (tag instanceof ShortcutInfo) { 3660 final ShortcutInfo info = (ShortcutInfo) tag; 3661 final Intent intent = info.intent; 3662 final ComponentName name = intent.getComponent(); 3663 3664 if (name != null) { 3665 if (packageNames.contains(name.getPackageName())) { 3666 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3667 childrenToRemove.add(view); 3668 } 3669 } 3670 } else if (tag instanceof FolderInfo) { 3671 final FolderInfo info = (FolderInfo) tag; 3672 final ArrayList<ShortcutInfo> contents = info.contents; 3673 final int contentsCount = contents.size(); 3674 final ArrayList<ShortcutInfo> appsToRemoveFromFolder = 3675 new ArrayList<ShortcutInfo>(); 3676 3677 for (int k = 0; k < contentsCount; k++) { 3678 final ShortcutInfo appInfo = contents.get(k); 3679 final Intent intent = appInfo.intent; 3680 final ComponentName name = intent.getComponent(); 3681 3682 if (name != null) { 3683 if (packageNames.contains(name.getPackageName())) { 3684 appsToRemoveFromFolder.add(appInfo); 3685 } 3686 } 3687 } 3688 for (ShortcutInfo item: appsToRemoveFromFolder) { 3689 info.remove(item); 3690 LauncherModel.deleteItemFromDatabase(mLauncher, item); 3691 } 3692 } else if (tag instanceof LauncherAppWidgetInfo) { 3693 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3694 final ComponentName provider = info.providerName; 3695 if (provider != null) { 3696 if (packageNames.contains(provider.getPackageName())) { 3697 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3698 childrenToRemove.add(view); 3699 } 3700 } 3701 } 3702 } 3703 3704 childCount = childrenToRemove.size(); 3705 for (int j = 0; j < childCount; j++) { 3706 View child = childrenToRemove.get(j); 3707 // Note: We can not remove the view directly from CellLayoutChildren as this 3708 // does not re-mark the spaces as unoccupied. 3709 layoutParent.removeViewInLayout(child); 3710 if (child instanceof DropTarget) { 3711 mDragController.removeDropTarget((DropTarget)child); 3712 } 3713 } 3714 3715 if (childCount > 0) { 3716 layout.requestLayout(); 3717 layout.invalidate(); 3718 } 3719 } 3720 }); 3721 } 3722 3723 // Clean up new-apps animation list 3724 final Context context = getContext(); 3725 post(new Runnable() { 3726 @Override 3727 public void run() { 3728 String spKey = LauncherApplication.getSharedPreferencesKey(); 3729 SharedPreferences sp = context.getSharedPreferences(spKey, 3730 Context.MODE_PRIVATE); 3731 Set<String> newApps = sp.getStringSet(InstallShortcutReceiver.NEW_APPS_LIST_KEY, 3732 null); 3733 3734 // Remove all queued items that match the same package 3735 if (newApps != null) { 3736 synchronized (newApps) { 3737 Iterator<String> iter = newApps.iterator(); 3738 while (iter.hasNext()) { 3739 try { 3740 Intent intent = Intent.parseUri(iter.next(), 0); 3741 String pn = ItemInfo.getPackageName(intent); 3742 if (packageNames.contains(pn)) { 3743 iter.remove(); 3744 } 3745 3746 // It is possible that we've queued an item to be loaded, yet it has 3747 // not been added to the workspace, so remove those items as well. 3748 ArrayList<ItemInfo> shortcuts; 3749 shortcuts = LauncherModel.getWorkspaceShortcutItemInfosWithIntent( 3750 intent); 3751 for (ItemInfo info : shortcuts) { 3752 LauncherModel.deleteItemFromDatabase(context, info); 3753 } 3754 } catch (URISyntaxException e) {} 3755 } 3756 } 3757 } 3758 } 3759 }); 3760 } 3761 3762 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3763 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = getAllShortcutAndWidgetContainers(); 3764 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3765 int childCount = layout.getChildCount(); 3766 for (int j = 0; j < childCount; j++) { 3767 final View view = layout.getChildAt(j); 3768 Object tag = view.getTag(); 3769 if (tag instanceof ShortcutInfo) { 3770 ShortcutInfo info = (ShortcutInfo) tag; 3771 // We need to check for ACTION_MAIN otherwise getComponent() might 3772 // return null for some shortcuts (for instance, for shortcuts to 3773 // web pages.) 3774 final Intent intent = info.intent; 3775 final ComponentName name = intent.getComponent(); 3776 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3777 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3778 final int appCount = apps.size(); 3779 for (int k = 0; k < appCount; k++) { 3780 ApplicationInfo app = apps.get(k); 3781 if (app.componentName.equals(name)) { 3782 BubbleTextView shortcut = (BubbleTextView) view; 3783 info.updateIcon(mIconCache); 3784 info.title = app.title.toString(); 3785 shortcut.applyFromShortcutInfo(info, mIconCache); 3786 } 3787 } 3788 } 3789 } 3790 } 3791 } 3792 } 3793 3794 void moveToDefaultScreen(boolean animate) { 3795 if (!isSmall()) { 3796 if (animate) { 3797 snapToPage(mDefaultPage); 3798 } else { 3799 setCurrentPage(mDefaultPage); 3800 } 3801 } 3802 getChildAt(mDefaultPage).requestFocus(); 3803 } 3804 3805 @Override 3806 public void syncPages() { 3807 } 3808 3809 @Override 3810 public void syncPageItems(int page, boolean immediate) { 3811 } 3812 3813 @Override 3814 protected String getCurrentPageDescription() { 3815 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 3816 return String.format(getContext().getString(R.string.workspace_scroll_format), 3817 page + 1, getChildCount()); 3818 } 3819 3820 public void getLocationInDragLayer(int[] loc) { 3821 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 3822 } 3823 3824 void setFadeForOverScroll(float fade) { 3825 if (!isScrollingIndicatorEnabled()) return; 3826 3827 mOverscrollFade = fade; 3828 float reducedFade = 0.5f + 0.5f * (1 - fade); 3829 final ViewGroup parent = (ViewGroup) getParent(); 3830 final ImageView qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3831 final ImageView dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3832 final View scrollIndicator = getScrollingIndicator(); 3833 3834 cancelScrollingIndicatorAnimations(); 3835 if (qsbDivider != null) qsbDivider.setAlpha(reducedFade); 3836 if (dockDivider != null) dockDivider.setAlpha(reducedFade); 3837 scrollIndicator.setAlpha(1 - fade); 3838 } 3839} 3840