Workspace.java revision 66a01fd24bde7c94ea892b007df7f79fbaa43d80
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.launcher3; 18 19import android.animation.Animator; 20import android.animation.AnimatorSet; 21import android.animation.ObjectAnimator; 22import android.animation.TimeInterpolator; 23import android.animation.ValueAnimator; 24import android.animation.ValueAnimator.AnimatorUpdateListener; 25import android.app.WallpaperManager; 26import android.appwidget.AppWidgetHostView; 27import android.appwidget.AppWidgetProviderInfo; 28import android.content.ComponentName; 29import android.content.Context; 30import android.content.Intent; 31import android.content.SharedPreferences; 32import android.content.res.Resources; 33import android.content.res.TypedArray; 34import android.graphics.Bitmap; 35import android.graphics.Canvas; 36import android.graphics.Matrix; 37import android.graphics.Point; 38import android.graphics.PointF; 39import android.graphics.Rect; 40import android.graphics.Region.Op; 41import android.graphics.drawable.Drawable; 42import android.os.IBinder; 43import android.os.Parcelable; 44import android.util.AttributeSet; 45import android.util.Log; 46import android.util.SparseArray; 47import android.view.Display; 48import android.view.MotionEvent; 49import android.view.View; 50import android.view.ViewGroup; 51import android.view.animation.DecelerateInterpolator; 52import android.widget.ImageView; 53import android.widget.TextView; 54 55import com.android.launcher3.R; 56import com.android.launcher3.FolderIcon.FolderRingAnimator; 57import com.android.launcher3.LauncherSettings.Favorites; 58 59import java.net.URISyntaxException; 60import java.util.ArrayList; 61import java.util.HashSet; 62import java.util.Iterator; 63import java.util.Set; 64 65/** 66 * The workspace is a wide area with a wallpaper and a finite number of pages. 67 * Each page contains a number of icons, folders or widgets the user can 68 * interact with. A workspace is meant to be used with a fixed width only. 69 */ 70public class Workspace extends SmoothPagedView 71 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 72 DragController.DragListener, LauncherTransitionable, ViewGroup.OnHierarchyChangeListener { 73 private static final String TAG = "Launcher.Workspace"; 74 75 // Y rotation to apply to the workspace screens 76 private static final float WORKSPACE_OVERSCROLL_ROTATION = 24f; 77 78 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 79 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 80 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 81 82 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 83 private static final int ADJACENT_SCREEN_DROP_DURATION = 300; 84 private static final int FLING_THRESHOLD_VELOCITY = 500; 85 86 // These animators are used to fade the children's outlines 87 private ObjectAnimator mChildrenOutlineFadeInAnimation; 88 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 89 private float mChildrenOutlineAlpha = 0; 90 91 // These properties refer to the background protection gradient used for AllApps and Customize 92 private ValueAnimator mBackgroundFadeInAnimation; 93 private ValueAnimator mBackgroundFadeOutAnimation; 94 private Drawable mBackground; 95 boolean mDrawBackground = true; 96 private float mBackgroundAlpha = 0; 97 98 private float mWallpaperScrollRatio = 1.0f; 99 private int mOriginalPageSpacing; 100 101 private final WallpaperManager mWallpaperManager; 102 private IBinder mWindowToken; 103 private static final float WALLPAPER_SCREENS_SPAN = 2f; 104 105 private int mDefaultPage; 106 107 /** 108 * CellInfo for the cell that is currently being dragged 109 */ 110 private CellLayout.CellInfo mDragInfo; 111 112 /** 113 * Target drop area calculated during last acceptDrop call. 114 */ 115 private int[] mTargetCell = new int[2]; 116 private int mDragOverX = -1; 117 private int mDragOverY = -1; 118 119 static Rect mLandscapeCellLayoutMetrics = null; 120 static Rect mPortraitCellLayoutMetrics = null; 121 122 /** 123 * The CellLayout that is currently being dragged over 124 */ 125 private CellLayout mDragTargetLayout = null; 126 /** 127 * The CellLayout that we will show as glowing 128 */ 129 private CellLayout mDragOverlappingLayout = null; 130 131 /** 132 * The CellLayout which will be dropped to 133 */ 134 private CellLayout mDropToLayout = null; 135 136 private Launcher mLauncher; 137 private IconCache mIconCache; 138 private DragController mDragController; 139 140 // These are temporary variables to prevent having to allocate a new object just to 141 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 142 private int[] mTempCell = new int[2]; 143 private int[] mTempEstimate = new int[2]; 144 private float[] mDragViewVisualCenter = new float[2]; 145 private float[] mTempDragCoordinates = new float[2]; 146 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 147 private float[] mTempDragBottomRightCoordinates = new float[2]; 148 private Matrix mTempInverseMatrix = new Matrix(); 149 150 private SpringLoadedDragController mSpringLoadedDragController; 151 private float mSpringLoadedShrinkFactor; 152 153 private static final int DEFAULT_CELL_COUNT_X = 4; 154 private static final int DEFAULT_CELL_COUNT_Y = 4; 155 156 // State variable that indicates whether the pages are small (ie when you're 157 // in all apps or customize mode) 158 159 enum State { NORMAL, SPRING_LOADED, SMALL }; 160 private State mState = State.NORMAL; 161 private boolean mIsSwitchingState = false; 162 163 boolean mAnimatingViewIntoPlace = false; 164 boolean mIsDragOccuring = false; 165 boolean mChildrenLayersEnabled = true; 166 167 /** Is the user is dragging an item near the edge of a page? */ 168 private boolean mInScrollArea = false; 169 170 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 171 private Bitmap mDragOutline = null; 172 private final Rect mTempRect = new Rect(); 173 private final int[] mTempXY = new int[2]; 174 private int[] mTempVisiblePagesRange = new int[2]; 175 private float mOverscrollFade = 0; 176 private boolean mOverscrollTransformsSet; 177 public static final int DRAG_BITMAP_PADDING = 2; 178 private boolean mWorkspaceFadeInAdjacentScreens; 179 180 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 181 int mWallpaperWidth; 182 int mWallpaperHeight; 183 WallpaperOffsetInterpolator mWallpaperOffset; 184 boolean mUpdateWallpaperOffsetImmediately = false; 185 private Runnable mDelayedResizeRunnable; 186 private Runnable mDelayedSnapToPageRunnable; 187 private Point mDisplaySize = new Point(); 188 private boolean mIsStaticWallpaper; 189 private int mWallpaperTravelWidth; 190 private int mSpringLoadedPageSpacing; 191 private int mCameraDistance; 192 193 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 194 private static final int FOLDER_CREATION_TIMEOUT = 0; 195 private static final int REORDER_TIMEOUT = 250; 196 private final Alarm mFolderCreationAlarm = new Alarm(); 197 private final Alarm mReorderAlarm = new Alarm(); 198 private FolderRingAnimator mDragFolderRingAnimator = null; 199 private FolderIcon mDragOverFolderIcon = null; 200 private boolean mCreateUserFolderOnDrop = false; 201 private boolean mAddToExistingFolderOnDrop = false; 202 private DropTarget.DragEnforcer mDragEnforcer; 203 private float mMaxDistanceForFolderCreation; 204 205 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 206 private float mXDown; 207 private float mYDown; 208 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 209 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 210 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 211 212 // Relating to the animation of items being dropped externally 213 public static final int ANIMATE_INTO_POSITION_AND_DISAPPEAR = 0; 214 public static final int ANIMATE_INTO_POSITION_AND_REMAIN = 1; 215 public static final int ANIMATE_INTO_POSITION_AND_RESIZE = 2; 216 public static final int COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION = 3; 217 public static final int CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION = 4; 218 219 // Related to dragging, folder creation and reordering 220 private static final int DRAG_MODE_NONE = 0; 221 private static final int DRAG_MODE_CREATE_FOLDER = 1; 222 private static final int DRAG_MODE_ADD_TO_FOLDER = 2; 223 private static final int DRAG_MODE_REORDER = 3; 224 private int mDragMode = DRAG_MODE_NONE; 225 private int mLastReorderX = -1; 226 private int mLastReorderY = -1; 227 228 private SparseArray<Parcelable> mSavedStates; 229 private final ArrayList<Integer> mRestoredPages = new ArrayList<Integer>(); 230 231 // These variables are used for storing the initial and final values during workspace animations 232 private int mSavedScrollX; 233 private float mSavedRotationY; 234 private float mSavedTranslationX; 235 private float mCurrentScaleX; 236 private float mCurrentScaleY; 237 private float mCurrentRotationY; 238 private float mCurrentTranslationX; 239 private float mCurrentTranslationY; 240 private float[] mOldTranslationXs; 241 private float[] mOldTranslationYs; 242 private float[] mOldScaleXs; 243 private float[] mOldScaleYs; 244 private float[] mOldBackgroundAlphas; 245 private float[] mOldAlphas; 246 private float[] mNewTranslationXs; 247 private float[] mNewTranslationYs; 248 private float[] mNewScaleXs; 249 private float[] mNewScaleYs; 250 private float[] mNewBackgroundAlphas; 251 private float[] mNewAlphas; 252 private float[] mNewRotationYs; 253 private float mTransitionProgress; 254 255 private final Runnable mBindPages = new Runnable() { 256 @Override 257 public void run() { 258 mLauncher.getModel().bindRemainingSynchronousPages(); 259 } 260 }; 261 262 /** 263 * Used to inflate the Workspace from XML. 264 * 265 * @param context The application's context. 266 * @param attrs The attributes set containing the Workspace's customization values. 267 */ 268 public Workspace(Context context, AttributeSet attrs) { 269 this(context, attrs, 0); 270 } 271 272 /** 273 * Used to inflate the Workspace from XML. 274 * 275 * @param context The application's context. 276 * @param attrs The attributes set containing the Workspace's customization values. 277 * @param defStyle Unused. 278 */ 279 public Workspace(Context context, AttributeSet attrs, int defStyle) { 280 super(context, attrs, defStyle); 281 mContentIsRefreshable = false; 282 mOriginalPageSpacing = mPageSpacing; 283 284 mDragEnforcer = new DropTarget.DragEnforcer(context); 285 // With workspace, data is available straight from the get-go 286 setDataIsReady(); 287 288 mLauncher = (Launcher) context; 289 final Resources res = getResources(); 290 mWorkspaceFadeInAdjacentScreens = res.getBoolean(R.bool.config_workspaceFadeAdjacentScreens); 291 mFadeInAdjacentScreens = false; 292 mWallpaperManager = WallpaperManager.getInstance(context); 293 294 int cellCountX = DEFAULT_CELL_COUNT_X; 295 int cellCountY = DEFAULT_CELL_COUNT_Y; 296 297 TypedArray a = context.obtainStyledAttributes(attrs, 298 R.styleable.Workspace, defStyle, 0); 299 300 if (LauncherApplication.isScreenLarge()) { 301 // Determine number of rows/columns dynamically 302 // TODO: This code currently fails on tablets with an aspect ratio < 1.3. 303 // Around that ratio we should make cells the same size in portrait and 304 // landscape 305 TypedArray actionBarSizeTypedArray = 306 context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize }); 307 final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); 308 309 Point minDims = new Point(); 310 Point maxDims = new Point(); 311 mLauncher.getWindowManager().getDefaultDisplay().getCurrentSizeRange(minDims, maxDims); 312 313 cellCountX = 1; 314 while (CellLayout.widthInPortrait(res, cellCountX + 1) <= minDims.x) { 315 cellCountX++; 316 } 317 318 cellCountY = 1; 319 while (actionBarHeight + CellLayout.heightInLandscape(res, cellCountY + 1) 320 <= minDims.y) { 321 cellCountY++; 322 } 323 } 324 325 mSpringLoadedShrinkFactor = 326 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 327 mSpringLoadedPageSpacing = 328 res.getDimensionPixelSize(R.dimen.workspace_spring_loaded_page_spacing); 329 mCameraDistance = res.getInteger(R.integer.config_cameraDistance); 330 331 // if the value is manually specified, use that instead 332 cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX); 333 cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY); 334 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 335 a.recycle(); 336 337 setOnHierarchyChangeListener(this); 338 339 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 340 setHapticFeedbackEnabled(false); 341 342 initWorkspace(); 343 344 // Disable multitouch across the workspace/all apps/customize tray 345 setMotionEventSplittingEnabled(true); 346 347 // Unless otherwise specified this view is important for accessibility. 348 if (getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 349 setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 350 } 351 } 352 353 // estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each 354 // dimension if unsuccessful 355 public int[] estimateItemSize(int hSpan, int vSpan, 356 ItemInfo itemInfo, boolean springLoaded) { 357 int[] size = new int[2]; 358 if (getChildCount() > 0) { 359 CellLayout cl = (CellLayout) mLauncher.getWorkspace().getChildAt(0); 360 Rect r = estimateItemPosition(cl, itemInfo, 0, 0, hSpan, vSpan); 361 size[0] = r.width(); 362 size[1] = r.height(); 363 if (springLoaded) { 364 size[0] *= mSpringLoadedShrinkFactor; 365 size[1] *= mSpringLoadedShrinkFactor; 366 } 367 return size; 368 } else { 369 size[0] = Integer.MAX_VALUE; 370 size[1] = Integer.MAX_VALUE; 371 return size; 372 } 373 } 374 public Rect estimateItemPosition(CellLayout cl, ItemInfo pendingInfo, 375 int hCell, int vCell, int hSpan, int vSpan) { 376 Rect r = new Rect(); 377 cl.cellToRect(hCell, vCell, hSpan, vSpan, r); 378 return r; 379 } 380 381 public void onDragStart(DragSource source, Object info, int dragAction) { 382 mIsDragOccuring = true; 383 updateChildrenLayersEnabled(false); 384 mLauncher.lockScreenOrientation(); 385 setChildrenBackgroundAlphaMultipliers(1f); 386 // Prevent any Un/InstallShortcutReceivers from updating the db while we are dragging 387 InstallShortcutReceiver.enableInstallQueue(); 388 UninstallShortcutReceiver.enableUninstallQueue(); 389 } 390 391 public void onDragEnd() { 392 mIsDragOccuring = false; 393 updateChildrenLayersEnabled(false); 394 mLauncher.unlockScreenOrientation(false); 395 396 // Re-enable any Un/InstallShortcutReceiver and now process any queued items 397 InstallShortcutReceiver.disableAndFlushInstallQueue(getContext()); 398 UninstallShortcutReceiver.disableAndFlushUninstallQueue(getContext()); 399 } 400 401 // Just a hack so that if a custom content screen is added to the left, we adjust the 402 // default screen accordingly so that it stays the same. 403 void incrementDefaultScreen() { 404 mDefaultPage++; 405 } 406 407 /** 408 * Initializes various states for this workspace. 409 */ 410 protected void initWorkspace() { 411 Context context = getContext(); 412 mCurrentPage = mDefaultPage; 413 Launcher.setScreen(mCurrentPage); 414 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 415 mIconCache = app.getIconCache(); 416 setWillNotDraw(false); 417 setClipChildren(false); 418 setClipToPadding(false); 419 setChildrenDrawnWithCacheEnabled(true); 420 421 final Resources res = getResources(); 422 try { 423 mBackground = res.getDrawable(R.drawable.apps_customize_bg); 424 } catch (Resources.NotFoundException e) { 425 // In this case, we will skip drawing background protection 426 } 427 428 mWallpaperOffset = new WallpaperOffsetInterpolator(); 429 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 430 display.getSize(mDisplaySize); 431 mWallpaperTravelWidth = (int) (mDisplaySize.x * 432 wallpaperTravelToScreenWidthRatio(mDisplaySize.x, mDisplaySize.y)); 433 434 mMaxDistanceForFolderCreation = (0.55f * res.getDimensionPixelSize(R.dimen.app_icon_size)); 435 mFlingThresholdVelocity = (int) (FLING_THRESHOLD_VELOCITY * mDensity); 436 } 437 438 @Override 439 protected int getScrollMode() { 440 return SmoothPagedView.X_LARGE_MODE; 441 } 442 443 @Override 444 public void onChildViewAdded(View parent, View child) { 445 if (!(child instanceof CellLayout)) { 446 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 447 } 448 CellLayout cl = ((CellLayout) child); 449 cl.setOnInterceptTouchListener(this); 450 cl.setClickable(true); 451 cl.setContentDescription(getContext().getString( 452 R.string.workspace_description_format, getChildCount())); 453 } 454 455 @Override 456 public void onChildViewRemoved(View parent, View child) { 457 } 458 459 protected boolean shouldDrawChild(View child) { 460 final CellLayout cl = (CellLayout) child; 461 return super.shouldDrawChild(child) && 462 (cl.getShortcutsAndWidgets().getAlpha() > 0 || 463 cl.getBackgroundAlpha() > 0); 464 } 465 466 /** 467 * @return The open folder on the current screen, or null if there is none 468 */ 469 Folder getOpenFolder() { 470 DragLayer dragLayer = mLauncher.getDragLayer(); 471 int count = dragLayer.getChildCount(); 472 for (int i = 0; i < count; i++) { 473 View child = dragLayer.getChildAt(i); 474 if (child instanceof Folder) { 475 Folder folder = (Folder) child; 476 if (folder.getInfo().opened) 477 return folder; 478 } 479 } 480 return null; 481 } 482 483 boolean isTouchActive() { 484 return mTouchState != TOUCH_STATE_REST; 485 } 486 487 /** 488 * Adds the specified child in the specified screen. The position and dimension of 489 * the child are defined by x, y, spanX and spanY. 490 * 491 * @param child The child to add in one of the workspace's screens. 492 * @param screen The screen in which to add the child. 493 * @param x The X position of the child in the screen's grid. 494 * @param y The Y position of the child in the screen's grid. 495 * @param spanX The number of cells spanned horizontally by the child. 496 * @param spanY The number of cells spanned vertically by the child. 497 */ 498 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY) { 499 addInScreen(child, container, screen, x, y, spanX, spanY, false); 500 } 501 502 /** 503 * Adds the specified child in the specified screen. The position and dimension of 504 * the child are defined by x, y, spanX and spanY. 505 * 506 * @param child The child to add in one of the workspace's screens. 507 * @param screen The screen in which to add the child. 508 * @param x The X position of the child in the screen's grid. 509 * @param y The Y position of the child in the screen's grid. 510 * @param spanX The number of cells spanned horizontally by the child. 511 * @param spanY The number of cells spanned vertically by the child. 512 * @param insert When true, the child is inserted at the beginning of the children list. 513 */ 514 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY, 515 boolean insert) { 516 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 517 if (screen < 0 || screen >= getChildCount()) { 518 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 519 + " (was " + screen + "); skipping child"); 520 return; 521 } 522 } 523 524 final CellLayout layout; 525 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 526 layout = mLauncher.getHotseat().getLayout(); 527 child.setOnKeyListener(null); 528 529 // Hide folder title in the hotseat 530 if (child instanceof FolderIcon) { 531 ((FolderIcon) child).setTextVisible(false); 532 } 533 534 if (screen < 0) { 535 screen = mLauncher.getHotseat().getOrderInHotseat(x, y); 536 } else { 537 // Note: We do this to ensure that the hotseat is always laid out in the orientation 538 // of the hotseat in order regardless of which orientation they were added 539 x = mLauncher.getHotseat().getCellXFromOrder(screen); 540 y = mLauncher.getHotseat().getCellYFromOrder(screen); 541 } 542 } else { 543 // Show folder title if not in the hotseat 544 if (child instanceof FolderIcon) { 545 ((FolderIcon) child).setTextVisible(true); 546 } 547 548 layout = (CellLayout) getChildAt(screen); 549 child.setOnKeyListener(new IconKeyEventListener()); 550 } 551 552 LayoutParams genericLp = child.getLayoutParams(); 553 CellLayout.LayoutParams lp; 554 if (genericLp == null || !(genericLp instanceof CellLayout.LayoutParams)) { 555 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 556 } else { 557 lp = (CellLayout.LayoutParams) genericLp; 558 lp.cellX = x; 559 lp.cellY = y; 560 lp.cellHSpan = spanX; 561 lp.cellVSpan = spanY; 562 } 563 564 if (spanX < 0 && spanY < 0) { 565 lp.isLockedToGrid = false; 566 } 567 568 // Get the canonical child id to uniquely represent this view in this screen 569 int childId = LauncherModel.getCellLayoutChildId(container, screen, x, y, spanX, spanY); 570 boolean markCellsAsOccupied = !(child instanceof Folder); 571 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 572 // TODO: This branch occurs when the workspace is adding views 573 // outside of the defined grid 574 // maybe we should be deleting these items from the LauncherModel? 575 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 576 } 577 578 if (!(child instanceof Folder)) { 579 child.setHapticFeedbackEnabled(false); 580 child.setOnLongClickListener(mLongClickListener); 581 } 582 if (child instanceof DropTarget) { 583 mDragController.addDropTarget((DropTarget) child); 584 } 585 } 586 587 /** 588 * Check if the point (x, y) hits a given page. 589 */ 590 private boolean hitsPage(int index, float x, float y) { 591 final View page = getChildAt(index); 592 if (page != null) { 593 float[] localXY = { x, y }; 594 mapPointFromSelfToChild(page, localXY); 595 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 596 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 597 } 598 return false; 599 } 600 601 @Override 602 protected boolean hitsPreviousPage(float x, float y) { 603 // mNextPage is set to INVALID_PAGE whenever we are stationary. 604 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 605 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 606 607 // Only allow tap to next page on large devices, where there's significant margin outside 608 // the active workspace 609 return LauncherApplication.isScreenLarge() && hitsPage(current - 1, x, y); 610 } 611 612 @Override 613 protected boolean hitsNextPage(float x, float y) { 614 // mNextPage is set to INVALID_PAGE whenever we are stationary. 615 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 616 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 617 618 // Only allow tap to next page on large devices, where there's significant margin outside 619 // the active workspace 620 return LauncherApplication.isScreenLarge() && hitsPage(current + 1, x, y); 621 } 622 623 /** 624 * Called directly from a CellLayout (not by the framework), after we've been added as a 625 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 626 * that it should intercept touch events, which is not something that is normally supported. 627 */ 628 @Override 629 public boolean onTouch(View v, MotionEvent event) { 630 return (isSmall() || !isFinishedSwitchingState()); 631 } 632 633 public boolean isSwitchingState() { 634 return mIsSwitchingState; 635 } 636 637 /** This differs from isSwitchingState in that we take into account how far the transition 638 * has completed. */ 639 public boolean isFinishedSwitchingState() { 640 return !mIsSwitchingState || (mTransitionProgress > 0.5f); 641 } 642 643 protected void onWindowVisibilityChanged (int visibility) { 644 mLauncher.onWindowVisibilityChanged(visibility); 645 } 646 647 @Override 648 public boolean dispatchUnhandledMove(View focused, int direction) { 649 if (isSmall() || !isFinishedSwitchingState()) { 650 // when the home screens are shrunken, shouldn't allow side-scrolling 651 return false; 652 } 653 return super.dispatchUnhandledMove(focused, direction); 654 } 655 656 @Override 657 public boolean onInterceptTouchEvent(MotionEvent ev) { 658 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 659 case MotionEvent.ACTION_DOWN: 660 mXDown = ev.getX(); 661 mYDown = ev.getY(); 662 break; 663 case MotionEvent.ACTION_POINTER_UP: 664 case MotionEvent.ACTION_UP: 665 if (mTouchState == TOUCH_STATE_REST) { 666 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 667 if (!currentPage.lastDownOnOccupiedCell()) { 668 onWallpaperTap(ev); 669 } 670 } 671 } 672 673 if (mLauncher != null && mLauncher.onTouch(this, ev)) { 674 return true; 675 } 676 677 return super.onInterceptTouchEvent(ev); 678 } 679 680 protected void reinflateWidgetsIfNecessary() { 681 final int clCount = getChildCount(); 682 for (int i = 0; i < clCount; i++) { 683 CellLayout cl = (CellLayout) getChildAt(i); 684 ShortcutAndWidgetContainer swc = cl.getShortcutsAndWidgets(); 685 final int itemCount = swc.getChildCount(); 686 for (int j = 0; j < itemCount; j++) { 687 View v = swc.getChildAt(j); 688 689 if (v.getTag() instanceof LauncherAppWidgetInfo) { 690 LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) v.getTag(); 691 LauncherAppWidgetHostView lahv = (LauncherAppWidgetHostView) info.hostView; 692 if (lahv != null && lahv.orientationChangedSincedInflation()) { 693 mLauncher.removeAppWidget(info); 694 // Remove the current widget which is inflated with the wrong orientation 695 cl.removeView(lahv); 696 mLauncher.bindAppWidget(info); 697 } 698 } 699 } 700 } 701 } 702 703 @Override 704 protected void determineScrollingStart(MotionEvent ev) { 705 if (isSmall()) return; 706 if (!isFinishedSwitchingState()) return; 707 708 float deltaX = Math.abs(ev.getX() - mXDown); 709 float deltaY = Math.abs(ev.getY() - mYDown); 710 711 if (Float.compare(deltaX, 0f) == 0) return; 712 713 float slope = deltaY / deltaX; 714 float theta = (float) Math.atan(slope); 715 716 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 717 cancelCurrentPageLongPress(); 718 } 719 720 if (theta > MAX_SWIPE_ANGLE) { 721 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 722 return; 723 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 724 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 725 // increase the touch slop to make it harder to begin scrolling the workspace. This 726 // results in vertically scrolling widgets to more easily. The higher the angle, the 727 // more we increase touch slop. 728 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 729 float extraRatio = (float) 730 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 731 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 732 } else { 733 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 734 super.determineScrollingStart(ev); 735 } 736 } 737 738 protected void onPageBeginMoving() { 739 super.onPageBeginMoving(); 740 741 if (isHardwareAccelerated()) { 742 updateChildrenLayersEnabled(false); 743 } else { 744 if (mNextPage != INVALID_PAGE) { 745 // we're snapping to a particular screen 746 enableChildrenCache(mCurrentPage, mNextPage); 747 } else { 748 // this is when user is actively dragging a particular screen, they might 749 // swipe it either left or right (but we won't advance by more than one screen) 750 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 751 } 752 } 753 754 // Only show page outlines as we pan if we are on large screen 755 if (LauncherApplication.isScreenLarge()) { 756 showOutlines(); 757 mIsStaticWallpaper = mWallpaperManager.getWallpaperInfo() == null; 758 } 759 760 // If we are not fading in adjacent screens, we still need to restore the alpha in case the 761 // user scrolls while we are transitioning (should not affect dispatchDraw optimizations) 762 if (!mWorkspaceFadeInAdjacentScreens) { 763 for (int i = 0; i < getChildCount(); ++i) { 764 ((CellLayout) getPageAt(i)).setShortcutAndWidgetAlpha(1f); 765 } 766 } 767 768 // Show the scroll indicator as you pan the page 769 showScrollingIndicator(false); 770 } 771 772 protected void onPageEndMoving() { 773 super.onPageEndMoving(); 774 775 if (isHardwareAccelerated()) { 776 updateChildrenLayersEnabled(false); 777 } else { 778 clearChildrenCache(); 779 } 780 781 782 if (mDragController.isDragging()) { 783 if (isSmall()) { 784 // If we are in springloaded mode, then force an event to check if the current touch 785 // is under a new page (to scroll to) 786 mDragController.forceTouchMove(); 787 } 788 } else { 789 // If we are not mid-dragging, hide the page outlines if we are on a large screen 790 if (LauncherApplication.isScreenLarge()) { 791 hideOutlines(); 792 } 793 794 // Hide the scroll indicator as you pan the page 795 if (!mDragController.isDragging()) { 796 hideScrollingIndicator(false); 797 } 798 } 799 800 if (mDelayedResizeRunnable != null) { 801 mDelayedResizeRunnable.run(); 802 mDelayedResizeRunnable = null; 803 } 804 805 if (mDelayedSnapToPageRunnable != null) { 806 mDelayedSnapToPageRunnable.run(); 807 mDelayedSnapToPageRunnable = null; 808 } 809 } 810 811 @Override 812 protected void notifyPageSwitchListener() { 813 super.notifyPageSwitchListener(); 814 Launcher.setScreen(mCurrentPage); 815 }; 816 817 // As a ratio of screen height, the total distance we want the parallax effect to span 818 // horizontally 819 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 820 float aspectRatio = width / (float) height; 821 822 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 823 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 824 // We will use these two data points to extrapolate how much the wallpaper parallax effect 825 // to span (ie travel) at any aspect ratio: 826 827 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 828 final float ASPECT_RATIO_PORTRAIT = 10/16f; 829 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 830 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 831 832 // To find out the desired width at different aspect ratios, we use the following two 833 // formulas, where the coefficient on x is the aspect ratio (width/height): 834 // (16/10)x + y = 1.5 835 // (10/16)x + y = 1.2 836 // We solve for x and y and end up with a final formula: 837 final float x = 838 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 839 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 840 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 841 return x * aspectRatio + y; 842 } 843 844 // The range of scroll values for Workspace 845 private int getScrollRange() { 846 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 847 } 848 849 protected void setWallpaperDimension() { 850 Point minDims = new Point(); 851 Point maxDims = new Point(); 852 mLauncher.getWindowManager().getDefaultDisplay().getCurrentSizeRange(minDims, maxDims); 853 854 final int maxDim = Math.max(maxDims.x, maxDims.y); 855 final int minDim = Math.min(minDims.x, minDims.y); 856 857 // We need to ensure that there is enough extra space in the wallpaper for the intended 858 // parallax effects 859 if (LauncherApplication.isScreenLarge()) { 860 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 861 mWallpaperHeight = maxDim; 862 } else { 863 mWallpaperWidth = Math.max((int) (minDim * WALLPAPER_SCREENS_SPAN), maxDim); 864 mWallpaperHeight = maxDim; 865 } 866 new Thread("setWallpaperDimension") { 867 public void run() { 868 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 869 } 870 }.start(); 871 } 872 873 private float wallpaperOffsetForCurrentScroll() { 874 // Set wallpaper offset steps (1 / (number of screens - 1)) 875 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f); 876 877 // For the purposes of computing the scrollRange and overScrollOffset, we assume 878 // that mLayoutScale is 1. This means that when we're in spring-loaded mode, 879 // there's no discrepancy between the wallpaper offset for a given page. 880 float layoutScale = mLayoutScale; 881 mLayoutScale = 1f; 882 int scrollRange = getScrollRange(); 883 884 // Again, we adjust the wallpaper offset to be consistent between values of mLayoutScale 885 float adjustedScrollX = Math.max(0, Math.min(getScrollX(), mMaxScrollX)); 886 adjustedScrollX *= mWallpaperScrollRatio; 887 mLayoutScale = layoutScale; 888 889 float scrollProgress = 890 adjustedScrollX / (float) scrollRange; 891 892 if (LauncherApplication.isScreenLarge() && mIsStaticWallpaper) { 893 // The wallpaper travel width is how far, from left to right, the wallpaper will move 894 // at this orientation. On tablets in portrait mode we don't move all the way to the 895 // edges of the wallpaper, or otherwise the parallax effect would be too strong. 896 int wallpaperTravelWidth = Math.min(mWallpaperTravelWidth, mWallpaperWidth); 897 898 float offsetInDips = wallpaperTravelWidth * scrollProgress + 899 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 900 float offset = offsetInDips / (float) mWallpaperWidth; 901 return offset; 902 } else { 903 return scrollProgress; 904 } 905 } 906 907 private void syncWallpaperOffsetWithScroll() { 908 final boolean enableWallpaperEffects = isHardwareAccelerated(); 909 if (enableWallpaperEffects) { 910 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 911 } 912 } 913 914 public void updateWallpaperOffsetImmediately() { 915 mUpdateWallpaperOffsetImmediately = true; 916 } 917 918 private void updateWallpaperOffsets() { 919 boolean updateNow = false; 920 boolean keepUpdating = true; 921 if (mUpdateWallpaperOffsetImmediately) { 922 updateNow = true; 923 keepUpdating = false; 924 mWallpaperOffset.jumpToFinal(); 925 mUpdateWallpaperOffsetImmediately = false; 926 } else { 927 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 928 } 929 if (updateNow) { 930 if (mWindowToken != null) { 931 mWallpaperManager.setWallpaperOffsets(mWindowToken, 932 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 933 } 934 } 935 if (keepUpdating) { 936 invalidate(); 937 } 938 } 939 940 @Override 941 protected void updateCurrentPageScroll() { 942 super.updateCurrentPageScroll(); 943 computeWallpaperScrollRatio(mCurrentPage); 944 } 945 946 @Override 947 protected void snapToPage(int whichPage) { 948 super.snapToPage(whichPage); 949 computeWallpaperScrollRatio(whichPage); 950 } 951 952 @Override 953 protected void snapToPage(int whichPage, int duration) { 954 super.snapToPage(whichPage, duration); 955 computeWallpaperScrollRatio(whichPage); 956 } 957 958 protected void snapToPage(int whichPage, Runnable r) { 959 if (mDelayedSnapToPageRunnable != null) { 960 mDelayedSnapToPageRunnable.run(); 961 } 962 mDelayedSnapToPageRunnable = r; 963 snapToPage(whichPage, SLOW_PAGE_SNAP_ANIMATION_DURATION); 964 } 965 966 private void computeWallpaperScrollRatio(int page) { 967 // Here, we determine what the desired scroll would be with and without a layout scale, 968 // and compute a ratio between the two. This allows us to adjust the wallpaper offset 969 // as though there is no layout scale. 970 float layoutScale = mLayoutScale; 971 int scaled = getChildOffset(page) - getRelativeChildOffset(page); 972 mLayoutScale = 1.0f; 973 float unscaled = getChildOffset(page) - getRelativeChildOffset(page); 974 mLayoutScale = layoutScale; 975 if (scaled > 0) { 976 mWallpaperScrollRatio = (1.0f * unscaled) / scaled; 977 } else { 978 mWallpaperScrollRatio = 1f; 979 } 980 } 981 982 class WallpaperOffsetInterpolator { 983 float mFinalHorizontalWallpaperOffset = 0.0f; 984 float mFinalVerticalWallpaperOffset = 0.5f; 985 float mHorizontalWallpaperOffset = 0.0f; 986 float mVerticalWallpaperOffset = 0.5f; 987 long mLastWallpaperOffsetUpdateTime; 988 boolean mIsMovingFast; 989 boolean mOverrideHorizontalCatchupConstant; 990 float mHorizontalCatchupConstant = 0.35f; 991 float mVerticalCatchupConstant = 0.35f; 992 993 public WallpaperOffsetInterpolator() { 994 } 995 996 public void setOverrideHorizontalCatchupConstant(boolean override) { 997 mOverrideHorizontalCatchupConstant = override; 998 } 999 1000 public void setHorizontalCatchupConstant(float f) { 1001 mHorizontalCatchupConstant = f; 1002 } 1003 1004 public void setVerticalCatchupConstant(float f) { 1005 mVerticalCatchupConstant = f; 1006 } 1007 1008 public boolean computeScrollOffset() { 1009 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 1010 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 1011 mIsMovingFast = false; 1012 return false; 1013 } 1014 boolean isLandscape = mDisplaySize.x > mDisplaySize.y; 1015 1016 long currentTime = System.currentTimeMillis(); 1017 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 1018 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 1019 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 1020 1021 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 1022 if (!mIsMovingFast && xdiff > 0.07) { 1023 mIsMovingFast = true; 1024 } 1025 1026 float fractionToCatchUpIn1MsHorizontal; 1027 if (mOverrideHorizontalCatchupConstant) { 1028 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 1029 } else if (mIsMovingFast) { 1030 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 1031 } else { 1032 // slow 1033 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 1034 } 1035 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 1036 1037 fractionToCatchUpIn1MsHorizontal /= 33f; 1038 fractionToCatchUpIn1MsVertical /= 33f; 1039 1040 final float UPDATE_THRESHOLD = 0.00001f; 1041 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 1042 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 1043 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 1044 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 1045 1046 // Don't have any lag between workspace and wallpaper on non-large devices 1047 if (!LauncherApplication.isScreenLarge() || jumpToFinalValue) { 1048 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 1049 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 1050 } else { 1051 float percentToCatchUpVertical = 1052 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 1053 float percentToCatchUpHorizontal = 1054 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 1055 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 1056 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 1057 } 1058 1059 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 1060 return true; 1061 } 1062 1063 public float getCurrX() { 1064 return mHorizontalWallpaperOffset; 1065 } 1066 1067 public float getFinalX() { 1068 return mFinalHorizontalWallpaperOffset; 1069 } 1070 1071 public float getCurrY() { 1072 return mVerticalWallpaperOffset; 1073 } 1074 1075 public float getFinalY() { 1076 return mFinalVerticalWallpaperOffset; 1077 } 1078 1079 public void setFinalX(float x) { 1080 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 1081 } 1082 1083 public void setFinalY(float y) { 1084 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 1085 } 1086 1087 public void jumpToFinal() { 1088 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 1089 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 1090 } 1091 } 1092 1093 @Override 1094 public void computeScroll() { 1095 super.computeScroll(); 1096 syncWallpaperOffsetWithScroll(); 1097 } 1098 1099 void showOutlines() { 1100 if (!isSmall() && !mIsSwitchingState) { 1101 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1102 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1103 mChildrenOutlineFadeInAnimation = LauncherAnimUtils.ofFloat(this, "childrenOutlineAlpha", 1.0f); 1104 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 1105 mChildrenOutlineFadeInAnimation.start(); 1106 } 1107 } 1108 1109 void hideOutlines() { 1110 if (!isSmall() && !mIsSwitchingState) { 1111 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1112 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1113 mChildrenOutlineFadeOutAnimation = LauncherAnimUtils.ofFloat(this, "childrenOutlineAlpha", 0.0f); 1114 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 1115 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 1116 mChildrenOutlineFadeOutAnimation.start(); 1117 } 1118 } 1119 1120 public void showOutlinesTemporarily() { 1121 if (!mIsPageMoving && !isTouchActive()) { 1122 snapToPage(mCurrentPage); 1123 } 1124 } 1125 1126 public void setChildrenOutlineAlpha(float alpha) { 1127 mChildrenOutlineAlpha = alpha; 1128 for (int i = 0; i < getChildCount(); i++) { 1129 CellLayout cl = (CellLayout) getChildAt(i); 1130 cl.setBackgroundAlpha(alpha); 1131 } 1132 } 1133 1134 public float getChildrenOutlineAlpha() { 1135 return mChildrenOutlineAlpha; 1136 } 1137 1138 void disableBackground() { 1139 mDrawBackground = false; 1140 } 1141 void enableBackground() { 1142 mDrawBackground = true; 1143 } 1144 1145 private void animateBackgroundGradient(float finalAlpha, boolean animated) { 1146 if (mBackground == null) return; 1147 if (mBackgroundFadeInAnimation != null) { 1148 mBackgroundFadeInAnimation.cancel(); 1149 mBackgroundFadeInAnimation = null; 1150 } 1151 if (mBackgroundFadeOutAnimation != null) { 1152 mBackgroundFadeOutAnimation.cancel(); 1153 mBackgroundFadeOutAnimation = null; 1154 } 1155 float startAlpha = getBackgroundAlpha(); 1156 if (finalAlpha != startAlpha) { 1157 if (animated) { 1158 mBackgroundFadeOutAnimation = 1159 LauncherAnimUtils.ofFloat(this, startAlpha, finalAlpha); 1160 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1161 public void onAnimationUpdate(ValueAnimator animation) { 1162 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1163 } 1164 }); 1165 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1166 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1167 mBackgroundFadeOutAnimation.start(); 1168 } else { 1169 setBackgroundAlpha(finalAlpha); 1170 } 1171 } 1172 } 1173 1174 public void setBackgroundAlpha(float alpha) { 1175 if (alpha != mBackgroundAlpha) { 1176 mBackgroundAlpha = alpha; 1177 invalidate(); 1178 } 1179 } 1180 1181 public float getBackgroundAlpha() { 1182 return mBackgroundAlpha; 1183 } 1184 1185 float backgroundAlphaInterpolator(float r) { 1186 float pivotA = 0.1f; 1187 float pivotB = 0.4f; 1188 if (r < pivotA) { 1189 return 0; 1190 } else if (r > pivotB) { 1191 return 1.0f; 1192 } else { 1193 return (r - pivotA)/(pivotB - pivotA); 1194 } 1195 } 1196 1197 private void updatePageAlphaValues(int screenCenter) { 1198 boolean isInOverscroll = mOverScrollX < 0 || mOverScrollX > mMaxScrollX; 1199 if (mWorkspaceFadeInAdjacentScreens && 1200 mState == State.NORMAL && 1201 !mIsSwitchingState && 1202 !isInOverscroll) { 1203 for (int i = 0; i < getChildCount(); i++) { 1204 CellLayout child = (CellLayout) getChildAt(i); 1205 if (child != null) { 1206 float scrollProgress = getScrollProgress(screenCenter, child, i); 1207 float alpha = 1 - Math.abs(scrollProgress); 1208 child.getShortcutsAndWidgets().setAlpha(alpha); 1209 if (!mIsDragOccuring) { 1210 child.setBackgroundAlphaMultiplier( 1211 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1212 } else { 1213 child.setBackgroundAlphaMultiplier(1f); 1214 } 1215 } 1216 } 1217 } 1218 } 1219 1220 private void setChildrenBackgroundAlphaMultipliers(float a) { 1221 for (int i = 0; i < getChildCount(); i++) { 1222 CellLayout child = (CellLayout) getChildAt(i); 1223 child.setBackgroundAlphaMultiplier(a); 1224 } 1225 } 1226 1227 @Override 1228 protected void screenScrolled(int screenCenter) { 1229 final boolean isRtl = isLayoutRtl(); 1230 super.screenScrolled(screenCenter); 1231 1232 updatePageAlphaValues(screenCenter); 1233 enableHwLayersOnVisiblePages(); 1234 1235 if (mOverScrollX < 0 || mOverScrollX > mMaxScrollX) { 1236 int index = 0; 1237 float pivotX = 0f; 1238 final float leftBiasedPivot = 0.25f; 1239 final float rightBiasedPivot = 0.75f; 1240 final int lowerIndex = 0; 1241 final int upperIndex = getChildCount() - 1; 1242 if (isRtl) { 1243 index = mOverScrollX < 0 ? upperIndex : lowerIndex; 1244 pivotX = (index == 0 ? leftBiasedPivot : rightBiasedPivot); 1245 } else { 1246 index = mOverScrollX < 0 ? lowerIndex : upperIndex; 1247 pivotX = (index == 0 ? rightBiasedPivot : leftBiasedPivot); 1248 } 1249 1250 CellLayout cl = (CellLayout) getChildAt(index); 1251 float scrollProgress = getScrollProgress(screenCenter, cl, index); 1252 final boolean isLeftPage = (isRtl ? index > 0 : index == 0); 1253 cl.setOverScrollAmount(Math.abs(scrollProgress), isLeftPage); 1254 float rotation = -WORKSPACE_OVERSCROLL_ROTATION * scrollProgress; 1255 cl.setRotationY(rotation); 1256 setFadeForOverScroll(Math.abs(scrollProgress)); 1257 if (!mOverscrollTransformsSet) { 1258 mOverscrollTransformsSet = true; 1259 cl.setCameraDistance(mDensity * mCameraDistance); 1260 cl.setPivotX(cl.getMeasuredWidth() * pivotX); 1261 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1262 cl.setOverscrollTransformsDirty(true); 1263 } 1264 } else { 1265 if (mOverscrollFade != 0) { 1266 setFadeForOverScroll(0); 1267 } 1268 if (mOverscrollTransformsSet) { 1269 mOverscrollTransformsSet = false; 1270 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1271 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1272 } 1273 } 1274 } 1275 1276 @Override 1277 protected void overScroll(float amount) { 1278 acceleratedOverScroll(amount); 1279 } 1280 1281 protected void onAttachedToWindow() { 1282 super.onAttachedToWindow(); 1283 mWindowToken = getWindowToken(); 1284 computeScroll(); 1285 mDragController.setWindowToken(mWindowToken); 1286 } 1287 1288 protected void onDetachedFromWindow() { 1289 mWindowToken = null; 1290 } 1291 1292 @Override 1293 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1294 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1295 mUpdateWallpaperOffsetImmediately = true; 1296 } 1297 super.onLayout(changed, left, top, right, bottom); 1298 } 1299 1300 @Override 1301 protected void onDraw(Canvas canvas) { 1302 updateWallpaperOffsets(); 1303 1304 // Draw the background gradient if necessary 1305 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1306 int alpha = (int) (mBackgroundAlpha * 255); 1307 mBackground.setAlpha(alpha); 1308 mBackground.setBounds(getScrollX(), 0, getScrollX() + getMeasuredWidth(), 1309 getMeasuredHeight()); 1310 mBackground.draw(canvas); 1311 } 1312 1313 super.onDraw(canvas); 1314 1315 // Call back to LauncherModel to finish binding after the first draw 1316 post(mBindPages); 1317 } 1318 1319 boolean isDrawingBackgroundGradient() { 1320 return (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground); 1321 } 1322 1323 @Override 1324 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1325 if (!mLauncher.isAllAppsVisible()) { 1326 final Folder openFolder = getOpenFolder(); 1327 if (openFolder != null) { 1328 return openFolder.requestFocus(direction, previouslyFocusedRect); 1329 } else { 1330 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1331 } 1332 } 1333 return false; 1334 } 1335 1336 @Override 1337 public int getDescendantFocusability() { 1338 if (isSmall()) { 1339 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1340 } 1341 return super.getDescendantFocusability(); 1342 } 1343 1344 @Override 1345 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1346 if (!mLauncher.isAllAppsVisible()) { 1347 final Folder openFolder = getOpenFolder(); 1348 if (openFolder != null) { 1349 openFolder.addFocusables(views, direction); 1350 } else { 1351 super.addFocusables(views, direction, focusableMode); 1352 } 1353 } 1354 } 1355 1356 public boolean isSmall() { 1357 return mState == State.SMALL || mState == State.SPRING_LOADED; 1358 } 1359 1360 void enableChildrenCache(int fromPage, int toPage) { 1361 if (fromPage > toPage) { 1362 final int temp = fromPage; 1363 fromPage = toPage; 1364 toPage = temp; 1365 } 1366 1367 final int screenCount = getChildCount(); 1368 1369 fromPage = Math.max(fromPage, 0); 1370 toPage = Math.min(toPage, screenCount - 1); 1371 1372 for (int i = fromPage; i <= toPage; i++) { 1373 final CellLayout layout = (CellLayout) getChildAt(i); 1374 layout.setChildrenDrawnWithCacheEnabled(true); 1375 layout.setChildrenDrawingCacheEnabled(true); 1376 } 1377 } 1378 1379 void clearChildrenCache() { 1380 final int screenCount = getChildCount(); 1381 for (int i = 0; i < screenCount; i++) { 1382 final CellLayout layout = (CellLayout) getChildAt(i); 1383 layout.setChildrenDrawnWithCacheEnabled(false); 1384 // In software mode, we don't want the items to continue to be drawn into bitmaps 1385 if (!isHardwareAccelerated()) { 1386 layout.setChildrenDrawingCacheEnabled(false); 1387 } 1388 } 1389 } 1390 1391 1392 private void updateChildrenLayersEnabled(boolean force) { 1393 boolean small = mState == State.SMALL || mIsSwitchingState; 1394 boolean enableChildrenLayers = force || small || mAnimatingViewIntoPlace || isPageMoving(); 1395 1396 if (enableChildrenLayers != mChildrenLayersEnabled) { 1397 mChildrenLayersEnabled = enableChildrenLayers; 1398 if (mChildrenLayersEnabled) { 1399 enableHwLayersOnVisiblePages(); 1400 } else { 1401 for (int i = 0; i < getPageCount(); i++) { 1402 final CellLayout cl = (CellLayout) getChildAt(i); 1403 cl.disableHardwareLayers(); 1404 } 1405 } 1406 } 1407 } 1408 1409 private void enableHwLayersOnVisiblePages() { 1410 if (mChildrenLayersEnabled) { 1411 final int screenCount = getChildCount(); 1412 getVisiblePages(mTempVisiblePagesRange); 1413 int leftScreen = mTempVisiblePagesRange[0]; 1414 int rightScreen = mTempVisiblePagesRange[1]; 1415 if (leftScreen == rightScreen) { 1416 // make sure we're caching at least two pages always 1417 if (rightScreen < screenCount - 1) { 1418 rightScreen++; 1419 } else if (leftScreen > 0) { 1420 leftScreen--; 1421 } 1422 } 1423 for (int i = 0; i < screenCount; i++) { 1424 final CellLayout layout = (CellLayout) getPageAt(i); 1425 if (!(leftScreen <= i && i <= rightScreen && shouldDrawChild(layout))) { 1426 layout.disableHardwareLayers(); 1427 } 1428 } 1429 for (int i = 0; i < screenCount; i++) { 1430 final CellLayout layout = (CellLayout) getPageAt(i); 1431 if (leftScreen <= i && i <= rightScreen && shouldDrawChild(layout)) { 1432 layout.enableHardwareLayers(); 1433 } 1434 } 1435 } 1436 } 1437 1438 public void buildPageHardwareLayers() { 1439 // force layers to be enabled just for the call to buildLayer 1440 updateChildrenLayersEnabled(true); 1441 if (getWindowToken() != null) { 1442 final int childCount = getChildCount(); 1443 for (int i = 0; i < childCount; i++) { 1444 CellLayout cl = (CellLayout) getChildAt(i); 1445 cl.buildHardwareLayer(); 1446 } 1447 } 1448 updateChildrenLayersEnabled(false); 1449 } 1450 1451 protected void onWallpaperTap(MotionEvent ev) { 1452 final int[] position = mTempCell; 1453 getLocationOnScreen(position); 1454 1455 int pointerIndex = ev.getActionIndex(); 1456 position[0] += (int) ev.getX(pointerIndex); 1457 position[1] += (int) ev.getY(pointerIndex); 1458 1459 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1460 ev.getAction() == MotionEvent.ACTION_UP 1461 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1462 position[0], position[1], 0, null); 1463 } 1464 1465 /* 1466 * This interpolator emulates the rate at which the perceived scale of an object changes 1467 * as its distance from a camera increases. When this interpolator is applied to a scale 1468 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1469 * from the camera. 1470 */ 1471 static class ZInterpolator implements TimeInterpolator { 1472 private float focalLength; 1473 1474 public ZInterpolator(float foc) { 1475 focalLength = foc; 1476 } 1477 1478 public float getInterpolation(float input) { 1479 return (1.0f - focalLength / (focalLength + input)) / 1480 (1.0f - focalLength / (focalLength + 1.0f)); 1481 } 1482 } 1483 1484 /* 1485 * The exact reverse of ZInterpolator. 1486 */ 1487 static class InverseZInterpolator implements TimeInterpolator { 1488 private ZInterpolator zInterpolator; 1489 public InverseZInterpolator(float foc) { 1490 zInterpolator = new ZInterpolator(foc); 1491 } 1492 public float getInterpolation(float input) { 1493 return 1 - zInterpolator.getInterpolation(1 - input); 1494 } 1495 } 1496 1497 /* 1498 * ZInterpolator compounded with an ease-out. 1499 */ 1500 static class ZoomOutInterpolator implements TimeInterpolator { 1501 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(0.75f); 1502 private final ZInterpolator zInterpolator = new ZInterpolator(0.13f); 1503 1504 public float getInterpolation(float input) { 1505 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1506 } 1507 } 1508 1509 /* 1510 * InvereZInterpolator compounded with an ease-out. 1511 */ 1512 static class ZoomInInterpolator implements TimeInterpolator { 1513 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1514 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1515 1516 public float getInterpolation(float input) { 1517 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1518 } 1519 } 1520 1521 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1522 1523 /* 1524 * 1525 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1526 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1527 * 1528 * These methods mark the appropriate pages as accepting drops (which alters their visual 1529 * appearance). 1530 * 1531 */ 1532 public void onDragStartedWithItem(View v) { 1533 final Canvas canvas = new Canvas(); 1534 1535 // The outline is used to visualize where the item will land if dropped 1536 mDragOutline = createDragOutline(v, canvas, DRAG_BITMAP_PADDING); 1537 } 1538 1539 public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, boolean clipAlpha) { 1540 final Canvas canvas = new Canvas(); 1541 1542 int[] size = estimateItemSize(info.spanX, info.spanY, info, false); 1543 1544 // The outline is used to visualize where the item will land if dropped 1545 mDragOutline = createDragOutline(b, canvas, DRAG_BITMAP_PADDING, size[0], 1546 size[1], clipAlpha); 1547 } 1548 1549 public void exitWidgetResizeMode() { 1550 DragLayer dragLayer = mLauncher.getDragLayer(); 1551 dragLayer.clearAllResizeFrames(); 1552 } 1553 1554 private void initAnimationArrays() { 1555 final int childCount = getChildCount(); 1556 if (mOldTranslationXs != null) return; 1557 mOldTranslationXs = new float[childCount]; 1558 mOldTranslationYs = new float[childCount]; 1559 mOldScaleXs = new float[childCount]; 1560 mOldScaleYs = new float[childCount]; 1561 mOldBackgroundAlphas = new float[childCount]; 1562 mOldAlphas = new float[childCount]; 1563 mNewTranslationXs = new float[childCount]; 1564 mNewTranslationYs = new float[childCount]; 1565 mNewScaleXs = new float[childCount]; 1566 mNewScaleYs = new float[childCount]; 1567 mNewBackgroundAlphas = new float[childCount]; 1568 mNewAlphas = new float[childCount]; 1569 mNewRotationYs = new float[childCount]; 1570 } 1571 1572 Animator getChangeStateAnimation(final State state, boolean animated) { 1573 return getChangeStateAnimation(state, animated, 0); 1574 } 1575 1576 Animator getChangeStateAnimation(final State state, boolean animated, int delay) { 1577 if (mState == state) { 1578 return null; 1579 } 1580 1581 // Initialize animation arrays for the first time if necessary 1582 initAnimationArrays(); 1583 1584 AnimatorSet anim = animated ? LauncherAnimUtils.createAnimatorSet() : null; 1585 1586 // Stop any scrolling, move to the current page right away 1587 setCurrentPage(getNextPage()); 1588 1589 final State oldState = mState; 1590 final boolean oldStateIsNormal = (oldState == State.NORMAL); 1591 final boolean oldStateIsSpringLoaded = (oldState == State.SPRING_LOADED); 1592 final boolean oldStateIsSmall = (oldState == State.SMALL); 1593 mState = state; 1594 final boolean stateIsNormal = (state == State.NORMAL); 1595 final boolean stateIsSpringLoaded = (state == State.SPRING_LOADED); 1596 final boolean stateIsSmall = (state == State.SMALL); 1597 float finalScaleFactor = 1.0f; 1598 float finalBackgroundAlpha = stateIsSpringLoaded ? 1.0f : 0f; 1599 float translationX = 0; 1600 float translationY = 0; 1601 boolean zoomIn = true; 1602 1603 if (state != State.NORMAL) { 1604 finalScaleFactor = mSpringLoadedShrinkFactor - (stateIsSmall ? 0.1f : 0); 1605 setPageSpacing(mSpringLoadedPageSpacing); 1606 if (oldStateIsNormal && stateIsSmall) { 1607 zoomIn = false; 1608 setLayoutScale(finalScaleFactor); 1609 updateChildrenLayersEnabled(false); 1610 } else { 1611 finalBackgroundAlpha = 1.0f; 1612 setLayoutScale(finalScaleFactor); 1613 } 1614 } else { 1615 setPageSpacing(mOriginalPageSpacing); 1616 setLayoutScale(1.0f); 1617 } 1618 1619 final int duration = zoomIn ? 1620 getResources().getInteger(R.integer.config_workspaceUnshrinkTime) : 1621 getResources().getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1622 for (int i = 0; i < getChildCount(); i++) { 1623 final CellLayout cl = (CellLayout) getChildAt(i); 1624 float finalAlpha = (!mWorkspaceFadeInAdjacentScreens || stateIsSpringLoaded || 1625 (i == mCurrentPage)) ? 1f : 0f; 1626 float currentAlpha = cl.getShortcutsAndWidgets().getAlpha(); 1627 float initialAlpha = currentAlpha; 1628 1629 // Determine the pages alpha during the state transition 1630 if ((oldStateIsSmall && stateIsNormal) || 1631 (oldStateIsNormal && stateIsSmall)) { 1632 // To/from workspace - only show the current page unless the transition is not 1633 // animated and the animation end callback below doesn't run; 1634 // or, if we're in spring-loaded mode 1635 if (i == mCurrentPage || !animated || oldStateIsSpringLoaded) { 1636 finalAlpha = 1f; 1637 } else { 1638 initialAlpha = 0f; 1639 finalAlpha = 0f; 1640 } 1641 } 1642 1643 mOldAlphas[i] = initialAlpha; 1644 mNewAlphas[i] = finalAlpha; 1645 if (animated) { 1646 mOldTranslationXs[i] = cl.getTranslationX(); 1647 mOldTranslationYs[i] = cl.getTranslationY(); 1648 mOldScaleXs[i] = cl.getScaleX(); 1649 mOldScaleYs[i] = cl.getScaleY(); 1650 mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1651 1652 mNewTranslationXs[i] = translationX; 1653 mNewTranslationYs[i] = translationY; 1654 mNewScaleXs[i] = finalScaleFactor; 1655 mNewScaleYs[i] = finalScaleFactor; 1656 mNewBackgroundAlphas[i] = finalBackgroundAlpha; 1657 } else { 1658 cl.setTranslationX(translationX); 1659 cl.setTranslationY(translationY); 1660 cl.setScaleX(finalScaleFactor); 1661 cl.setScaleY(finalScaleFactor); 1662 cl.setBackgroundAlpha(finalBackgroundAlpha); 1663 cl.setShortcutAndWidgetAlpha(finalAlpha); 1664 } 1665 } 1666 1667 if (animated) { 1668 for (int index = 0; index < getChildCount(); index++) { 1669 final int i = index; 1670 final CellLayout cl = (CellLayout) getChildAt(i); 1671 float currentAlpha = cl.getShortcutsAndWidgets().getAlpha(); 1672 if (mOldAlphas[i] == 0 && mNewAlphas[i] == 0) { 1673 cl.setTranslationX(mNewTranslationXs[i]); 1674 cl.setTranslationY(mNewTranslationYs[i]); 1675 cl.setScaleX(mNewScaleXs[i]); 1676 cl.setScaleY(mNewScaleYs[i]); 1677 cl.setBackgroundAlpha(mNewBackgroundAlphas[i]); 1678 cl.setShortcutAndWidgetAlpha(mNewAlphas[i]); 1679 cl.setRotationY(mNewRotationYs[i]); 1680 } else { 1681 LauncherViewPropertyAnimator a = new LauncherViewPropertyAnimator(cl); 1682 a.translationX(mNewTranslationXs[i]) 1683 .translationY(mNewTranslationYs[i]) 1684 .scaleX(mNewScaleXs[i]) 1685 .scaleY(mNewScaleYs[i]) 1686 .setDuration(duration) 1687 .setInterpolator(mZoomInInterpolator); 1688 anim.play(a); 1689 1690 if (mOldAlphas[i] != mNewAlphas[i] || currentAlpha != mNewAlphas[i]) { 1691 LauncherViewPropertyAnimator alphaAnim = 1692 new LauncherViewPropertyAnimator(cl.getShortcutsAndWidgets()); 1693 alphaAnim.alpha(mNewAlphas[i]) 1694 .setDuration(duration) 1695 .setInterpolator(mZoomInInterpolator); 1696 anim.play(alphaAnim); 1697 } 1698 if (mOldBackgroundAlphas[i] != 0 || 1699 mNewBackgroundAlphas[i] != 0) { 1700 ValueAnimator bgAnim = 1701 LauncherAnimUtils.ofFloat(cl, 0f, 1f).setDuration(duration); 1702 bgAnim.setInterpolator(mZoomInInterpolator); 1703 bgAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1704 public void onAnimationUpdate(float a, float b) { 1705 cl.setBackgroundAlpha( 1706 a * mOldBackgroundAlphas[i] + 1707 b * mNewBackgroundAlphas[i]); 1708 } 1709 }); 1710 anim.play(bgAnim); 1711 } 1712 } 1713 } 1714 anim.setStartDelay(delay); 1715 } 1716 1717 if (stateIsSpringLoaded) { 1718 // Right now we're covered by Apps Customize 1719 // Show the background gradient immediately, so the gradient will 1720 // be showing once AppsCustomize disappears 1721 animateBackgroundGradient(getResources().getInteger( 1722 R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, false); 1723 } else { 1724 // Fade the background gradient away 1725 animateBackgroundGradient(0f, true); 1726 } 1727 return anim; 1728 } 1729 1730 @Override 1731 public void onLauncherTransitionPrepare(Launcher l, boolean animated, boolean toWorkspace) { 1732 mIsSwitchingState = true; 1733 updateChildrenLayersEnabled(false); 1734 cancelScrollingIndicatorAnimations(); 1735 } 1736 1737 @Override 1738 public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) { 1739 } 1740 1741 @Override 1742 public void onLauncherTransitionStep(Launcher l, float t) { 1743 mTransitionProgress = t; 1744 } 1745 1746 @Override 1747 public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) { 1748 mIsSwitchingState = false; 1749 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 1750 updateChildrenLayersEnabled(false); 1751 // The code in getChangeStateAnimation to determine initialAlpha and finalAlpha will ensure 1752 // ensure that only the current page is visible during (and subsequently, after) the 1753 // transition animation. If fade adjacent pages is disabled, then re-enable the page 1754 // visibility after the transition animation. 1755 if (!mWorkspaceFadeInAdjacentScreens) { 1756 for (int i = 0; i < getChildCount(); i++) { 1757 final CellLayout cl = (CellLayout) getChildAt(i); 1758 cl.setShortcutAndWidgetAlpha(1f); 1759 } 1760 } 1761 } 1762 1763 @Override 1764 public View getContent() { 1765 return this; 1766 } 1767 1768 /** 1769 * Draw the View v into the given Canvas. 1770 * 1771 * @param v the view to draw 1772 * @param destCanvas the canvas to draw on 1773 * @param padding the horizontal and vertical padding to use when drawing 1774 */ 1775 private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { 1776 final Rect clipRect = mTempRect; 1777 v.getDrawingRect(clipRect); 1778 1779 boolean textVisible = false; 1780 1781 destCanvas.save(); 1782 if (v instanceof TextView && pruneToDrawable) { 1783 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1784 clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); 1785 destCanvas.translate(padding / 2, padding / 2); 1786 d.draw(destCanvas); 1787 } else { 1788 if (v instanceof FolderIcon) { 1789 // For FolderIcons the text can bleed into the icon area, and so we need to 1790 // hide the text completely (which can't be achieved by clipping). 1791 if (((FolderIcon) v).getTextVisible()) { 1792 ((FolderIcon) v).setTextVisible(false); 1793 textVisible = true; 1794 } 1795 } else if (v instanceof BubbleTextView) { 1796 final BubbleTextView tv = (BubbleTextView) v; 1797 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1798 tv.getLayout().getLineTop(0); 1799 } else if (v instanceof TextView) { 1800 final TextView tv = (TextView) v; 1801 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1802 tv.getLayout().getLineTop(0); 1803 } 1804 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1805 destCanvas.clipRect(clipRect, Op.REPLACE); 1806 v.draw(destCanvas); 1807 1808 // Restore text visibility of FolderIcon if necessary 1809 if (textVisible) { 1810 ((FolderIcon) v).setTextVisible(true); 1811 } 1812 } 1813 destCanvas.restore(); 1814 } 1815 1816 /** 1817 * Returns a new bitmap to show when the given View is being dragged around. 1818 * Responsibility for the bitmap is transferred to the caller. 1819 */ 1820 public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1821 Bitmap b; 1822 1823 if (v instanceof TextView) { 1824 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1825 b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, 1826 d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); 1827 } else { 1828 b = Bitmap.createBitmap( 1829 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1830 } 1831 1832 canvas.setBitmap(b); 1833 drawDragView(v, canvas, padding, true); 1834 canvas.setBitmap(null); 1835 1836 return b; 1837 } 1838 1839 /** 1840 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1841 * Responsibility for the bitmap is transferred to the caller. 1842 */ 1843 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1844 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1845 final Bitmap b = Bitmap.createBitmap( 1846 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1847 1848 canvas.setBitmap(b); 1849 drawDragView(v, canvas, padding, true); 1850 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1851 canvas.setBitmap(null); 1852 return b; 1853 } 1854 1855 /** 1856 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1857 * Responsibility for the bitmap is transferred to the caller. 1858 */ 1859 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h, 1860 boolean clipAlpha) { 1861 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1862 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1863 canvas.setBitmap(b); 1864 1865 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 1866 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 1867 (h - padding) / (float) orig.getHeight()); 1868 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 1869 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 1870 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 1871 1872 // center the image 1873 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 1874 1875 canvas.drawBitmap(orig, src, dst, null); 1876 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor, 1877 clipAlpha); 1878 canvas.setBitmap(null); 1879 1880 return b; 1881 } 1882 1883 void startDrag(CellLayout.CellInfo cellInfo) { 1884 View child = cellInfo.cell; 1885 1886 // Make sure the drag was started by a long press as opposed to a long click. 1887 if (!child.isInTouchMode()) { 1888 return; 1889 } 1890 1891 mDragInfo = cellInfo; 1892 child.setVisibility(INVISIBLE); 1893 CellLayout layout = (CellLayout) child.getParent().getParent(); 1894 layout.prepareChildForDrag(child); 1895 1896 child.clearFocus(); 1897 child.setPressed(false); 1898 1899 final Canvas canvas = new Canvas(); 1900 1901 // The outline is used to visualize where the item will land if dropped 1902 mDragOutline = createDragOutline(child, canvas, DRAG_BITMAP_PADDING); 1903 beginDragShared(child, this); 1904 } 1905 1906 public void beginDragShared(View child, DragSource source) { 1907 Resources r = getResources(); 1908 1909 // The drag bitmap follows the touch point around on the screen 1910 final Bitmap b = createDragBitmap(child, new Canvas(), DRAG_BITMAP_PADDING); 1911 1912 final int bmpWidth = b.getWidth(); 1913 final int bmpHeight = b.getHeight(); 1914 1915 float scale = mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 1916 int dragLayerX = 1917 Math.round(mTempXY[0] - (bmpWidth - scale * child.getWidth()) / 2); 1918 int dragLayerY = 1919 Math.round(mTempXY[1] - (bmpHeight - scale * bmpHeight) / 2 1920 - DRAG_BITMAP_PADDING / 2); 1921 1922 Point dragVisualizeOffset = null; 1923 Rect dragRect = null; 1924 if (child instanceof BubbleTextView || child instanceof PagedViewIcon) { 1925 int iconSize = r.getDimensionPixelSize(R.dimen.app_icon_size); 1926 int iconPaddingTop = r.getDimensionPixelSize(R.dimen.app_icon_padding_top); 1927 int top = child.getPaddingTop(); 1928 int left = (bmpWidth - iconSize) / 2; 1929 int right = left + iconSize; 1930 int bottom = top + iconSize; 1931 dragLayerY += top; 1932 // Note: The drag region is used to calculate drag layer offsets, but the 1933 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 1934 dragVisualizeOffset = new Point(-DRAG_BITMAP_PADDING / 2, 1935 iconPaddingTop - DRAG_BITMAP_PADDING / 2); 1936 dragRect = new Rect(left, top, right, bottom); 1937 } else if (child instanceof FolderIcon) { 1938 int previewSize = r.getDimensionPixelSize(R.dimen.folder_preview_size); 1939 dragRect = new Rect(0, 0, child.getWidth(), previewSize); 1940 } 1941 1942 // Clear the pressed state if necessary 1943 if (child instanceof BubbleTextView) { 1944 BubbleTextView icon = (BubbleTextView) child; 1945 icon.clearPressedOrFocusedBackground(); 1946 } 1947 1948 mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 1949 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect, scale); 1950 b.recycle(); 1951 1952 // Show the scrolling indicator when you pick up an item 1953 showScrollingIndicator(false); 1954 } 1955 1956 void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, int screen, 1957 int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { 1958 View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); 1959 1960 final int[] cellXY = new int[2]; 1961 target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1962 addInScreen(view, container, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1963 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, cellXY[0], 1964 cellXY[1]); 1965 } 1966 1967 public boolean transitionStateShouldAllowDrop() { 1968 return ((!isSwitchingState() || mTransitionProgress > 0.5f) && mState != State.SMALL); 1969 } 1970 1971 /** 1972 * {@inheritDoc} 1973 */ 1974 public boolean acceptDrop(DragObject d) { 1975 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1976 CellLayout dropTargetLayout = mDropToLayout; 1977 if (d.dragSource != this) { 1978 // Don't accept the drop if we're not over a screen at time of drop 1979 if (dropTargetLayout == null) { 1980 return false; 1981 } 1982 if (!transitionStateShouldAllowDrop()) return false; 1983 1984 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 1985 d.dragView, mDragViewVisualCenter); 1986 1987 // We want the point to be mapped to the dragTarget. 1988 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 1989 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 1990 } else { 1991 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 1992 } 1993 1994 int spanX = 1; 1995 int spanY = 1; 1996 if (mDragInfo != null) { 1997 final CellLayout.CellInfo dragCellInfo = mDragInfo; 1998 spanX = dragCellInfo.spanX; 1999 spanY = dragCellInfo.spanY; 2000 } else { 2001 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 2002 spanX = dragInfo.spanX; 2003 spanY = dragInfo.spanY; 2004 } 2005 2006 int minSpanX = spanX; 2007 int minSpanY = spanY; 2008 if (d.dragInfo instanceof PendingAddWidgetInfo) { 2009 minSpanX = ((PendingAddWidgetInfo) d.dragInfo).minSpanX; 2010 minSpanY = ((PendingAddWidgetInfo) d.dragInfo).minSpanY; 2011 } 2012 2013 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2014 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, dropTargetLayout, 2015 mTargetCell); 2016 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2017 mDragViewVisualCenter[1], mTargetCell); 2018 if (willCreateUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, 2019 mTargetCell, distance, true)) { 2020 return true; 2021 } 2022 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, 2023 mTargetCell, distance)) { 2024 return true; 2025 } 2026 2027 int[] resultSpan = new int[2]; 2028 mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], 2029 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2030 null, mTargetCell, resultSpan, CellLayout.MODE_ACCEPT_DROP); 2031 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2032 2033 // Don't accept the drop if there's no room for the item 2034 if (!foundCell) { 2035 // Don't show the message if we are dropping on the AllApps button and the hotseat 2036 // is full 2037 boolean isHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2038 if (mTargetCell != null && isHotseat) { 2039 Hotseat hotseat = mLauncher.getHotseat(); 2040 if (hotseat.isAllAppsButtonRank( 2041 hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { 2042 return false; 2043 } 2044 } 2045 2046 mLauncher.showOutOfSpaceMessage(isHotseat); 2047 return false; 2048 } 2049 } 2050 return true; 2051 } 2052 2053 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, float 2054 distance, boolean considerTimeout) { 2055 if (distance > mMaxDistanceForFolderCreation) return false; 2056 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2057 2058 if (dropOverView != null) { 2059 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2060 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2061 return false; 2062 } 2063 } 2064 2065 boolean hasntMoved = false; 2066 if (mDragInfo != null) { 2067 hasntMoved = dropOverView == mDragInfo.cell; 2068 } 2069 2070 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2071 return false; 2072 } 2073 2074 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2075 boolean willBecomeShortcut = 2076 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2077 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2078 2079 return (aboveShortcut && willBecomeShortcut); 2080 } 2081 2082 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell, 2083 float distance) { 2084 if (distance > mMaxDistanceForFolderCreation) return false; 2085 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2086 2087 if (dropOverView != null) { 2088 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2089 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2090 return false; 2091 } 2092 } 2093 2094 if (dropOverView instanceof FolderIcon) { 2095 FolderIcon fi = (FolderIcon) dropOverView; 2096 if (fi.acceptDrop(dragInfo)) { 2097 return true; 2098 } 2099 } 2100 return false; 2101 } 2102 2103 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2104 int[] targetCell, float distance, boolean external, DragView dragView, 2105 Runnable postAnimationRunnable) { 2106 if (distance > mMaxDistanceForFolderCreation) return false; 2107 View v = target.getChildAt(targetCell[0], targetCell[1]); 2108 2109 boolean hasntMoved = false; 2110 if (mDragInfo != null) { 2111 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2112 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2113 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2114 } 2115 2116 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2117 mCreateUserFolderOnDrop = false; 2118 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 2119 2120 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2121 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2122 2123 if (aboveShortcut && willBecomeShortcut) { 2124 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2125 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2126 // if the drag started here, we need to remove it from the workspace 2127 if (!external) { 2128 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2129 } 2130 2131 Rect folderLocation = new Rect(); 2132 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2133 target.removeView(v); 2134 2135 FolderIcon fi = 2136 mLauncher.addFolder(target, container, screen, targetCell[0], targetCell[1]); 2137 destInfo.cellX = -1; 2138 destInfo.cellY = -1; 2139 sourceInfo.cellX = -1; 2140 sourceInfo.cellY = -1; 2141 2142 // If the dragView is null, we can't animate 2143 boolean animate = dragView != null; 2144 if (animate) { 2145 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2146 postAnimationRunnable); 2147 } else { 2148 fi.addItem(destInfo); 2149 fi.addItem(sourceInfo); 2150 } 2151 return true; 2152 } 2153 return false; 2154 } 2155 2156 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2157 float distance, DragObject d, boolean external) { 2158 if (distance > mMaxDistanceForFolderCreation) return false; 2159 2160 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2161 if (!mAddToExistingFolderOnDrop) return false; 2162 mAddToExistingFolderOnDrop = false; 2163 2164 if (dropOverView instanceof FolderIcon) { 2165 FolderIcon fi = (FolderIcon) dropOverView; 2166 if (fi.acceptDrop(d.dragInfo)) { 2167 fi.onDrop(d); 2168 2169 // if the drag started here, we need to remove it from the workspace 2170 if (!external) { 2171 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2172 } 2173 return true; 2174 } 2175 } 2176 return false; 2177 } 2178 2179 public void onDrop(final DragObject d) { 2180 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2181 mDragViewVisualCenter); 2182 2183 CellLayout dropTargetLayout = mDropToLayout; 2184 2185 // We want the point to be mapped to the dragTarget. 2186 if (dropTargetLayout != null) { 2187 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 2188 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2189 } else { 2190 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 2191 } 2192 } 2193 2194 int snapScreen = -1; 2195 boolean resizeOnDrop = false; 2196 if (d.dragSource != this) { 2197 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2198 (int) mDragViewVisualCenter[1] }; 2199 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2200 } else if (mDragInfo != null) { 2201 final View cell = mDragInfo.cell; 2202 2203 Runnable resizeRunnable = null; 2204 if (dropTargetLayout != null) { 2205 // Move internally 2206 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2207 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2208 long container = hasMovedIntoHotseat ? 2209 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2210 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2211 int screen = (mTargetCell[0] < 0) ? 2212 mDragInfo.screen : indexOfChild(dropTargetLayout); 2213 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2214 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2215 // First we find the cell nearest to point at which the item is 2216 // dropped, without any consideration to whether there is an item there. 2217 2218 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2219 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2220 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2221 mDragViewVisualCenter[1], mTargetCell); 2222 2223 // If the item being dropped is a shortcut and the nearest drop 2224 // cell also contains a shortcut, then create a folder with the two shortcuts. 2225 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2226 dropTargetLayout, mTargetCell, distance, false, d.dragView, null)) { 2227 return; 2228 } 2229 2230 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, 2231 distance, d, false)) { 2232 return; 2233 } 2234 2235 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2236 // we need to find the nearest cell location that is vacant 2237 ItemInfo item = (ItemInfo) d.dragInfo; 2238 int minSpanX = item.spanX; 2239 int minSpanY = item.spanY; 2240 if (item.minSpanX > 0 && item.minSpanY > 0) { 2241 minSpanX = item.minSpanX; 2242 minSpanY = item.minSpanY; 2243 } 2244 2245 int[] resultSpan = new int[2]; 2246 mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], 2247 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, cell, 2248 mTargetCell, resultSpan, CellLayout.MODE_ON_DROP); 2249 2250 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2251 2252 // if the widget resizes on drop 2253 if (foundCell && (cell instanceof AppWidgetHostView) && 2254 (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY)) { 2255 resizeOnDrop = true; 2256 item.spanX = resultSpan[0]; 2257 item.spanY = resultSpan[1]; 2258 AppWidgetHostView awhv = (AppWidgetHostView) cell; 2259 AppWidgetResizeFrame.updateWidgetSizeRanges(awhv, mLauncher, resultSpan[0], 2260 resultSpan[1]); 2261 } 2262 2263 if (mCurrentPage != screen && !hasMovedIntoHotseat) { 2264 snapScreen = screen; 2265 snapToPage(screen); 2266 } 2267 2268 if (foundCell) { 2269 final ItemInfo info = (ItemInfo) cell.getTag(); 2270 if (hasMovedLayouts) { 2271 // Reparent the view 2272 getParentCellLayoutForView(cell).removeView(cell); 2273 addInScreen(cell, container, screen, mTargetCell[0], mTargetCell[1], 2274 info.spanX, info.spanY); 2275 } 2276 2277 // update the item's position after drop 2278 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2279 lp.cellX = lp.tmpCellX = mTargetCell[0]; 2280 lp.cellY = lp.tmpCellY = mTargetCell[1]; 2281 lp.cellHSpan = item.spanX; 2282 lp.cellVSpan = item.spanY; 2283 lp.isLockedToGrid = true; 2284 cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screen, 2285 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2286 2287 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2288 cell instanceof LauncherAppWidgetHostView) { 2289 final CellLayout cellLayout = dropTargetLayout; 2290 // We post this call so that the widget has a chance to be placed 2291 // in its final location 2292 2293 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2294 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2295 if (pinfo != null && 2296 pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2297 final Runnable addResizeFrame = new Runnable() { 2298 public void run() { 2299 DragLayer dragLayer = mLauncher.getDragLayer(); 2300 dragLayer.addResizeFrame(info, hostView, cellLayout); 2301 } 2302 }; 2303 resizeRunnable = (new Runnable() { 2304 public void run() { 2305 if (!isPageMoving()) { 2306 addResizeFrame.run(); 2307 } else { 2308 mDelayedResizeRunnable = addResizeFrame; 2309 } 2310 } 2311 }); 2312 } 2313 } 2314 2315 LauncherModel.moveItemInDatabase(mLauncher, info, container, screen, lp.cellX, 2316 lp.cellY); 2317 } else { 2318 // If we can't find a drop location, we return the item to its original position 2319 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2320 mTargetCell[0] = lp.cellX; 2321 mTargetCell[1] = lp.cellY; 2322 CellLayout layout = (CellLayout) cell.getParent().getParent(); 2323 layout.markCellsAsOccupiedForView(cell); 2324 } 2325 } 2326 2327 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2328 final Runnable finalResizeRunnable = resizeRunnable; 2329 // Prepare it to be animated into its new position 2330 // This must be called after the view has been re-parented 2331 final Runnable onCompleteRunnable = new Runnable() { 2332 @Override 2333 public void run() { 2334 mAnimatingViewIntoPlace = false; 2335 updateChildrenLayersEnabled(false); 2336 if (finalResizeRunnable != null) { 2337 finalResizeRunnable.run(); 2338 } 2339 } 2340 }; 2341 mAnimatingViewIntoPlace = true; 2342 if (d.dragView.hasDrawn()) { 2343 final ItemInfo info = (ItemInfo) cell.getTag(); 2344 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET) { 2345 int animationType = resizeOnDrop ? ANIMATE_INTO_POSITION_AND_RESIZE : 2346 ANIMATE_INTO_POSITION_AND_DISAPPEAR; 2347 animateWidgetDrop(info, parent, d.dragView, 2348 onCompleteRunnable, animationType, cell, false); 2349 } else { 2350 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2351 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2352 onCompleteRunnable, this); 2353 } 2354 } else { 2355 d.deferDragViewCleanupPostAnimation = false; 2356 cell.setVisibility(VISIBLE); 2357 } 2358 parent.onDropChild(cell); 2359 } 2360 } 2361 2362 public void setFinalScrollForPageChange(int screen) { 2363 if (screen >= 0) { 2364 mSavedScrollX = getScrollX(); 2365 CellLayout cl = (CellLayout) getChildAt(screen); 2366 mSavedTranslationX = cl.getTranslationX(); 2367 mSavedRotationY = cl.getRotationY(); 2368 final int newX = getChildOffset(screen) - getRelativeChildOffset(screen); 2369 setScrollX(newX); 2370 cl.setTranslationX(0f); 2371 cl.setRotationY(0f); 2372 } 2373 } 2374 2375 public void resetFinalScrollForPageChange(int screen) { 2376 if (screen >= 0) { 2377 CellLayout cl = (CellLayout) getChildAt(screen); 2378 setScrollX(mSavedScrollX); 2379 cl.setTranslationX(mSavedTranslationX); 2380 cl.setRotationY(mSavedRotationY); 2381 } 2382 } 2383 2384 public void getViewLocationRelativeToSelf(View v, int[] location) { 2385 getLocationInWindow(location); 2386 int x = location[0]; 2387 int y = location[1]; 2388 2389 v.getLocationInWindow(location); 2390 int vX = location[0]; 2391 int vY = location[1]; 2392 2393 location[0] = vX - x; 2394 location[1] = vY - y; 2395 } 2396 2397 public void onDragEnter(DragObject d) { 2398 mDragEnforcer.onDragEnter(); 2399 mCreateUserFolderOnDrop = false; 2400 mAddToExistingFolderOnDrop = false; 2401 2402 mDropToLayout = null; 2403 CellLayout layout = getCurrentDropLayout(); 2404 setCurrentDropLayout(layout); 2405 setCurrentDragOverlappingLayout(layout); 2406 2407 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2408 // don't need to show the outlines 2409 if (LauncherApplication.isScreenLarge()) { 2410 showOutlines(); 2411 } 2412 } 2413 2414 static Rect getCellLayoutMetrics(Launcher launcher, int orientation) { 2415 Resources res = launcher.getResources(); 2416 Display display = launcher.getWindowManager().getDefaultDisplay(); 2417 Point smallestSize = new Point(); 2418 Point largestSize = new Point(); 2419 display.getCurrentSizeRange(smallestSize, largestSize); 2420 if (orientation == CellLayout.LANDSCAPE) { 2421 if (mLandscapeCellLayoutMetrics == null) { 2422 int paddingLeft = res.getDimensionPixelSize(R.dimen.workspace_left_padding_land); 2423 int paddingRight = res.getDimensionPixelSize(R.dimen.workspace_right_padding_land); 2424 int paddingTop = res.getDimensionPixelSize(R.dimen.workspace_top_padding_land); 2425 int paddingBottom = res.getDimensionPixelSize(R.dimen.workspace_bottom_padding_land); 2426 int width = largestSize.x - paddingLeft - paddingRight; 2427 int height = smallestSize.y - paddingTop - paddingBottom; 2428 mLandscapeCellLayoutMetrics = new Rect(); 2429 CellLayout.getMetrics(mLandscapeCellLayoutMetrics, res, 2430 width, height, LauncherModel.getCellCountX(), LauncherModel.getCellCountY(), 2431 orientation); 2432 } 2433 return mLandscapeCellLayoutMetrics; 2434 } else if (orientation == CellLayout.PORTRAIT) { 2435 if (mPortraitCellLayoutMetrics == null) { 2436 int paddingLeft = res.getDimensionPixelSize(R.dimen.workspace_left_padding_land); 2437 int paddingRight = res.getDimensionPixelSize(R.dimen.workspace_right_padding_land); 2438 int paddingTop = res.getDimensionPixelSize(R.dimen.workspace_top_padding_land); 2439 int paddingBottom = res.getDimensionPixelSize(R.dimen.workspace_bottom_padding_land); 2440 int width = smallestSize.x - paddingLeft - paddingRight; 2441 int height = largestSize.y - paddingTop - paddingBottom; 2442 mPortraitCellLayoutMetrics = new Rect(); 2443 CellLayout.getMetrics(mPortraitCellLayoutMetrics, res, 2444 width, height, LauncherModel.getCellCountX(), LauncherModel.getCellCountY(), 2445 orientation); 2446 } 2447 return mPortraitCellLayoutMetrics; 2448 } 2449 return null; 2450 } 2451 2452 public void onDragExit(DragObject d) { 2453 mDragEnforcer.onDragExit(); 2454 2455 // Here we store the final page that will be dropped to, if the workspace in fact 2456 // receives the drop 2457 if (mInScrollArea) { 2458 if (isPageMoving()) { 2459 // If the user drops while the page is scrolling, we should use that page as the 2460 // destination instead of the page that is being hovered over. 2461 mDropToLayout = (CellLayout) getPageAt(getNextPage()); 2462 } else { 2463 mDropToLayout = mDragOverlappingLayout; 2464 } 2465 } else { 2466 mDropToLayout = mDragTargetLayout; 2467 } 2468 2469 if (mDragMode == DRAG_MODE_CREATE_FOLDER) { 2470 mCreateUserFolderOnDrop = true; 2471 } else if (mDragMode == DRAG_MODE_ADD_TO_FOLDER) { 2472 mAddToExistingFolderOnDrop = true; 2473 } 2474 2475 // Reset the scroll area and previous drag target 2476 onResetScrollArea(); 2477 setCurrentDropLayout(null); 2478 setCurrentDragOverlappingLayout(null); 2479 2480 mSpringLoadedDragController.cancel(); 2481 2482 if (!mIsPageMoving) { 2483 hideOutlines(); 2484 } 2485 } 2486 2487 void setCurrentDropLayout(CellLayout layout) { 2488 if (mDragTargetLayout != null) { 2489 mDragTargetLayout.revertTempState(); 2490 mDragTargetLayout.onDragExit(); 2491 } 2492 mDragTargetLayout = layout; 2493 if (mDragTargetLayout != null) { 2494 mDragTargetLayout.onDragEnter(); 2495 } 2496 cleanupReorder(true); 2497 cleanupFolderCreation(); 2498 setCurrentDropOverCell(-1, -1); 2499 } 2500 2501 void setCurrentDragOverlappingLayout(CellLayout layout) { 2502 if (mDragOverlappingLayout != null) { 2503 mDragOverlappingLayout.setIsDragOverlapping(false); 2504 } 2505 mDragOverlappingLayout = layout; 2506 if (mDragOverlappingLayout != null) { 2507 mDragOverlappingLayout.setIsDragOverlapping(true); 2508 } 2509 invalidate(); 2510 } 2511 2512 void setCurrentDropOverCell(int x, int y) { 2513 if (x != mDragOverX || y != mDragOverY) { 2514 mDragOverX = x; 2515 mDragOverY = y; 2516 setDragMode(DRAG_MODE_NONE); 2517 } 2518 } 2519 2520 void setDragMode(int dragMode) { 2521 if (dragMode != mDragMode) { 2522 if (dragMode == DRAG_MODE_NONE) { 2523 cleanupAddToFolder(); 2524 // We don't want to cancel the re-order alarm every time the target cell changes 2525 // as this feels to slow / unresponsive. 2526 cleanupReorder(false); 2527 cleanupFolderCreation(); 2528 } else if (dragMode == DRAG_MODE_ADD_TO_FOLDER) { 2529 cleanupReorder(true); 2530 cleanupFolderCreation(); 2531 } else if (dragMode == DRAG_MODE_CREATE_FOLDER) { 2532 cleanupAddToFolder(); 2533 cleanupReorder(true); 2534 } else if (dragMode == DRAG_MODE_REORDER) { 2535 cleanupAddToFolder(); 2536 cleanupFolderCreation(); 2537 } 2538 mDragMode = dragMode; 2539 } 2540 } 2541 2542 private void cleanupFolderCreation() { 2543 if (mDragFolderRingAnimator != null) { 2544 mDragFolderRingAnimator.animateToNaturalState(); 2545 } 2546 mFolderCreationAlarm.cancelAlarm(); 2547 } 2548 2549 private void cleanupAddToFolder() { 2550 if (mDragOverFolderIcon != null) { 2551 mDragOverFolderIcon.onDragExit(null); 2552 mDragOverFolderIcon = null; 2553 } 2554 } 2555 2556 private void cleanupReorder(boolean cancelAlarm) { 2557 // Any pending reorders are canceled 2558 if (cancelAlarm) { 2559 mReorderAlarm.cancelAlarm(); 2560 } 2561 mLastReorderX = -1; 2562 mLastReorderY = -1; 2563 } 2564 2565 public DropTarget getDropTargetDelegate(DragObject d) { 2566 return null; 2567 } 2568 2569 /* 2570 * 2571 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2572 * coordinate space. The argument xy is modified with the return result. 2573 * 2574 */ 2575 void mapPointFromSelfToChild(View v, float[] xy) { 2576 mapPointFromSelfToChild(v, xy, null); 2577 } 2578 2579 /* 2580 * 2581 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2582 * coordinate space. The argument xy is modified with the return result. 2583 * 2584 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2585 * computing it itself; we use this to avoid redundant matrix inversions in 2586 * findMatchingPageForDragOver 2587 * 2588 */ 2589 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2590 if (cachedInverseMatrix == null) { 2591 v.getMatrix().invert(mTempInverseMatrix); 2592 cachedInverseMatrix = mTempInverseMatrix; 2593 } 2594 int scrollX = getScrollX(); 2595 if (mNextPage != INVALID_PAGE) { 2596 scrollX = mScroller.getFinalX(); 2597 } 2598 xy[0] = xy[0] + scrollX - v.getLeft(); 2599 xy[1] = xy[1] + getScrollY() - v.getTop(); 2600 cachedInverseMatrix.mapPoints(xy); 2601 } 2602 2603 2604 void mapPointFromSelfToHotseatLayout(Hotseat hotseat, float[] xy) { 2605 hotseat.getLayout().getMatrix().invert(mTempInverseMatrix); 2606 xy[0] = xy[0] - hotseat.getLeft() - hotseat.getLayout().getLeft(); 2607 xy[1] = xy[1] - hotseat.getTop() - hotseat.getLayout().getTop(); 2608 mTempInverseMatrix.mapPoints(xy); 2609 } 2610 2611 /* 2612 * 2613 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2614 * the parent View's coordinate space. The argument xy is modified with the return result. 2615 * 2616 */ 2617 void mapPointFromChildToSelf(View v, float[] xy) { 2618 v.getMatrix().mapPoints(xy); 2619 int scrollX = getScrollX(); 2620 if (mNextPage != INVALID_PAGE) { 2621 scrollX = mScroller.getFinalX(); 2622 } 2623 xy[0] -= (scrollX - v.getLeft()); 2624 xy[1] -= (getScrollY() - v.getTop()); 2625 } 2626 2627 static private float squaredDistance(float[] point1, float[] point2) { 2628 float distanceX = point1[0] - point2[0]; 2629 float distanceY = point2[1] - point2[1]; 2630 return distanceX * distanceX + distanceY * distanceY; 2631 } 2632 2633 /* 2634 * 2635 * Returns true if the passed CellLayout cl overlaps with dragView 2636 * 2637 */ 2638 boolean overlaps(CellLayout cl, DragView dragView, 2639 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2640 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2641 final float[] draggedItemTopLeft = mTempDragCoordinates; 2642 draggedItemTopLeft[0] = dragViewX; 2643 draggedItemTopLeft[1] = dragViewY; 2644 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2645 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2646 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2647 2648 // Transform the dragged item's top left coordinates 2649 // to the CellLayout's local coordinates 2650 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2651 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2652 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2653 2654 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2655 // Transform the dragged item's bottom right coordinates 2656 // to the CellLayout's local coordinates 2657 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2658 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2659 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2660 2661 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2662 float overlap = (overlapRegionRight - overlapRegionLeft) * 2663 (overlapRegionBottom - overlapRegionTop); 2664 if (overlap > 0) { 2665 return true; 2666 } 2667 } 2668 } 2669 return false; 2670 } 2671 2672 /* 2673 * 2674 * This method returns the CellLayout that is currently being dragged to. In order to drag 2675 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2676 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2677 * 2678 * Return null if no CellLayout is currently being dragged over 2679 * 2680 */ 2681 private CellLayout findMatchingPageForDragOver( 2682 DragView dragView, float originX, float originY, boolean exact) { 2683 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2684 // with the item being dragged and then choose the one that's closest to the touch point 2685 final int screenCount = getChildCount(); 2686 CellLayout bestMatchingScreen = null; 2687 float smallestDistSoFar = Float.MAX_VALUE; 2688 2689 for (int i = 0; i < screenCount; i++) { 2690 CellLayout cl = (CellLayout) getChildAt(i); 2691 2692 final float[] touchXy = {originX, originY}; 2693 // Transform the touch coordinates to the CellLayout's local coordinates 2694 // If the touch point is within the bounds of the cell layout, we can return immediately 2695 cl.getMatrix().invert(mTempInverseMatrix); 2696 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2697 2698 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2699 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2700 return cl; 2701 } 2702 2703 if (!exact) { 2704 // Get the center of the cell layout in screen coordinates 2705 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2706 cellLayoutCenter[0] = cl.getWidth()/2; 2707 cellLayoutCenter[1] = cl.getHeight()/2; 2708 mapPointFromChildToSelf(cl, cellLayoutCenter); 2709 2710 touchXy[0] = originX; 2711 touchXy[1] = originY; 2712 2713 // Calculate the distance between the center of the CellLayout 2714 // and the touch point 2715 float dist = squaredDistance(touchXy, cellLayoutCenter); 2716 2717 if (dist < smallestDistSoFar) { 2718 smallestDistSoFar = dist; 2719 bestMatchingScreen = cl; 2720 } 2721 } 2722 } 2723 return bestMatchingScreen; 2724 } 2725 2726 // This is used to compute the visual center of the dragView. This point is then 2727 // used to visualize drop locations and determine where to drop an item. The idea is that 2728 // the visual center represents the user's interpretation of where the item is, and hence 2729 // is the appropriate point to use when determining drop location. 2730 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2731 DragView dragView, float[] recycle) { 2732 float res[]; 2733 if (recycle == null) { 2734 res = new float[2]; 2735 } else { 2736 res = recycle; 2737 } 2738 2739 // First off, the drag view has been shifted in a way that is not represented in the 2740 // x and y values or the x/yOffsets. Here we account for that shift. 2741 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2742 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2743 2744 // These represent the visual top and left of drag view if a dragRect was provided. 2745 // If a dragRect was not provided, then they correspond to the actual view left and 2746 // top, as the dragRect is in that case taken to be the entire dragView. 2747 // R.dimen.dragViewOffsetY. 2748 int left = x - xOffset; 2749 int top = y - yOffset; 2750 2751 // In order to find the visual center, we shift by half the dragRect 2752 res[0] = left + dragView.getDragRegion().width() / 2; 2753 res[1] = top + dragView.getDragRegion().height() / 2; 2754 2755 return res; 2756 } 2757 2758 private boolean isDragWidget(DragObject d) { 2759 return (d.dragInfo instanceof LauncherAppWidgetInfo || 2760 d.dragInfo instanceof PendingAddWidgetInfo); 2761 } 2762 private boolean isExternalDragWidget(DragObject d) { 2763 return d.dragSource != this && isDragWidget(d); 2764 } 2765 2766 public void onDragOver(DragObject d) { 2767 // Skip drag over events while we are dragging over side pages 2768 if (mInScrollArea || mIsSwitchingState || mState == State.SMALL) return; 2769 2770 Rect r = new Rect(); 2771 CellLayout layout = null; 2772 ItemInfo item = (ItemInfo) d.dragInfo; 2773 2774 // Ensure that we have proper spans for the item that we are dropping 2775 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2776 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2777 d.dragView, mDragViewVisualCenter); 2778 2779 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2780 // Identify whether we have dragged over a side page 2781 if (isSmall()) { 2782 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 2783 mLauncher.getHotseat().getHitRect(r); 2784 if (r.contains(d.x, d.y)) { 2785 layout = mLauncher.getHotseat().getLayout(); 2786 } 2787 } 2788 if (layout == null) { 2789 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false); 2790 } 2791 if (layout != mDragTargetLayout) { 2792 2793 setCurrentDropLayout(layout); 2794 setCurrentDragOverlappingLayout(layout); 2795 2796 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 2797 if (isInSpringLoadedMode) { 2798 if (mLauncher.isHotseatLayout(layout)) { 2799 mSpringLoadedDragController.cancel(); 2800 } else { 2801 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2802 } 2803 } 2804 } 2805 } else { 2806 // Test to see if we are over the hotseat otherwise just use the current page 2807 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 2808 mLauncher.getHotseat().getHitRect(r); 2809 if (r.contains(d.x, d.y)) { 2810 layout = mLauncher.getHotseat().getLayout(); 2811 } 2812 } 2813 if (layout == null) { 2814 layout = getCurrentDropLayout(); 2815 } 2816 if (layout != mDragTargetLayout) { 2817 setCurrentDropLayout(layout); 2818 setCurrentDragOverlappingLayout(layout); 2819 } 2820 } 2821 2822 // Handle the drag over 2823 if (mDragTargetLayout != null) { 2824 // We want the point to be mapped to the dragTarget. 2825 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2826 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2827 } else { 2828 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2829 } 2830 2831 ItemInfo info = (ItemInfo) d.dragInfo; 2832 2833 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2834 (int) mDragViewVisualCenter[1], item.spanX, item.spanY, 2835 mDragTargetLayout, mTargetCell); 2836 2837 setCurrentDropOverCell(mTargetCell[0], mTargetCell[1]); 2838 2839 float targetCellDistance = mDragTargetLayout.getDistanceFromCell( 2840 mDragViewVisualCenter[0], mDragViewVisualCenter[1], mTargetCell); 2841 2842 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2843 mTargetCell[1]); 2844 2845 manageFolderFeedback(info, mDragTargetLayout, mTargetCell, 2846 targetCellDistance, dragOverView); 2847 2848 int minSpanX = item.spanX; 2849 int minSpanY = item.spanY; 2850 if (item.minSpanX > 0 && item.minSpanY > 0) { 2851 minSpanX = item.minSpanX; 2852 minSpanY = item.minSpanY; 2853 } 2854 2855 boolean nearestDropOccupied = mDragTargetLayout.isNearestDropLocationOccupied((int) 2856 mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], item.spanX, 2857 item.spanY, child, mTargetCell); 2858 2859 if (!nearestDropOccupied) { 2860 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2861 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2862 mTargetCell[0], mTargetCell[1], item.spanX, item.spanY, false, 2863 d.dragView.getDragVisualizeOffset(), d.dragView.getDragRegion()); 2864 } else if ((mDragMode == DRAG_MODE_NONE || mDragMode == DRAG_MODE_REORDER) 2865 && !mReorderAlarm.alarmPending() && (mLastReorderX != mTargetCell[0] || 2866 mLastReorderY != mTargetCell[1])) { 2867 2868 // Otherwise, if we aren't adding to or creating a folder and there's no pending 2869 // reorder, then we schedule a reorder 2870 ReorderAlarmListener listener = new ReorderAlarmListener(mDragViewVisualCenter, 2871 minSpanX, minSpanY, item.spanX, item.spanY, d.dragView, child); 2872 mReorderAlarm.setOnAlarmListener(listener); 2873 mReorderAlarm.setAlarm(REORDER_TIMEOUT); 2874 } 2875 2876 if (mDragMode == DRAG_MODE_CREATE_FOLDER || mDragMode == DRAG_MODE_ADD_TO_FOLDER || 2877 !nearestDropOccupied) { 2878 if (mDragTargetLayout != null) { 2879 mDragTargetLayout.revertTempState(); 2880 } 2881 } 2882 } 2883 } 2884 2885 private void manageFolderFeedback(ItemInfo info, CellLayout targetLayout, 2886 int[] targetCell, float distance, View dragOverView) { 2887 boolean userFolderPending = willCreateUserFolder(info, targetLayout, targetCell, distance, 2888 false); 2889 2890 if (mDragMode == DRAG_MODE_NONE && userFolderPending && 2891 !mFolderCreationAlarm.alarmPending()) { 2892 mFolderCreationAlarm.setOnAlarmListener(new 2893 FolderCreationAlarmListener(targetLayout, targetCell[0], targetCell[1])); 2894 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2895 return; 2896 } 2897 2898 boolean willAddToFolder = 2899 willAddToExistingUserFolder(info, targetLayout, targetCell, distance); 2900 2901 if (willAddToFolder && mDragMode == DRAG_MODE_NONE) { 2902 mDragOverFolderIcon = ((FolderIcon) dragOverView); 2903 mDragOverFolderIcon.onDragEnter(info); 2904 if (targetLayout != null) { 2905 targetLayout.clearDragOutlines(); 2906 } 2907 setDragMode(DRAG_MODE_ADD_TO_FOLDER); 2908 return; 2909 } 2910 2911 if (mDragMode == DRAG_MODE_ADD_TO_FOLDER && !willAddToFolder) { 2912 setDragMode(DRAG_MODE_NONE); 2913 } 2914 if (mDragMode == DRAG_MODE_CREATE_FOLDER && !userFolderPending) { 2915 setDragMode(DRAG_MODE_NONE); 2916 } 2917 2918 return; 2919 } 2920 2921 class FolderCreationAlarmListener implements OnAlarmListener { 2922 CellLayout layout; 2923 int cellX; 2924 int cellY; 2925 2926 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 2927 this.layout = layout; 2928 this.cellX = cellX; 2929 this.cellY = cellY; 2930 } 2931 2932 public void onAlarm(Alarm alarm) { 2933 if (mDragFolderRingAnimator == null) { 2934 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 2935 } 2936 mDragFolderRingAnimator.setCell(cellX, cellY); 2937 mDragFolderRingAnimator.setCellLayout(layout); 2938 mDragFolderRingAnimator.animateToAcceptState(); 2939 layout.showFolderAccept(mDragFolderRingAnimator); 2940 layout.clearDragOutlines(); 2941 setDragMode(DRAG_MODE_CREATE_FOLDER); 2942 } 2943 } 2944 2945 class ReorderAlarmListener implements OnAlarmListener { 2946 float[] dragViewCenter; 2947 int minSpanX, minSpanY, spanX, spanY; 2948 DragView dragView; 2949 View child; 2950 2951 public ReorderAlarmListener(float[] dragViewCenter, int minSpanX, int minSpanY, int spanX, 2952 int spanY, DragView dragView, View child) { 2953 this.dragViewCenter = dragViewCenter; 2954 this.minSpanX = minSpanX; 2955 this.minSpanY = minSpanY; 2956 this.spanX = spanX; 2957 this.spanY = spanY; 2958 this.child = child; 2959 this.dragView = dragView; 2960 } 2961 2962 public void onAlarm(Alarm alarm) { 2963 int[] resultSpan = new int[2]; 2964 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2965 (int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell); 2966 mLastReorderX = mTargetCell[0]; 2967 mLastReorderY = mTargetCell[1]; 2968 2969 mTargetCell = mDragTargetLayout.createArea((int) mDragViewVisualCenter[0], 2970 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2971 child, mTargetCell, resultSpan, CellLayout.MODE_DRAG_OVER); 2972 2973 if (mTargetCell[0] < 0 || mTargetCell[1] < 0) { 2974 mDragTargetLayout.revertTempState(); 2975 } else { 2976 setDragMode(DRAG_MODE_REORDER); 2977 } 2978 2979 boolean resize = resultSpan[0] != spanX || resultSpan[1] != spanY; 2980 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2981 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2982 mTargetCell[0], mTargetCell[1], resultSpan[0], resultSpan[1], resize, 2983 dragView.getDragVisualizeOffset(), dragView.getDragRegion()); 2984 } 2985 } 2986 2987 @Override 2988 public void getHitRect(Rect outRect) { 2989 // We want the workspace to have the whole area of the display (it will find the correct 2990 // cell layout to drop to in the existing drag/drop logic. 2991 outRect.set(0, 0, mDisplaySize.x, mDisplaySize.y); 2992 } 2993 2994 /** 2995 * Add the item specified by dragInfo to the given layout. 2996 * @return true if successful 2997 */ 2998 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2999 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 3000 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 3001 return true; 3002 } 3003 mLauncher.showOutOfSpaceMessage(mLauncher.isHotseatLayout(layout)); 3004 return false; 3005 } 3006 3007 private void onDropExternal(int[] touchXY, Object dragInfo, 3008 CellLayout cellLayout, boolean insertAtFirst) { 3009 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 3010 } 3011 3012 /** 3013 * Drop an item that didn't originate on one of the workspace screens. 3014 * It may have come from Launcher (e.g. from all apps or customize), or it may have 3015 * come from another app altogether. 3016 * 3017 * NOTE: This can also be called when we are outside of a drag event, when we want 3018 * to add an item to one of the workspace screens. 3019 */ 3020 private void onDropExternal(final int[] touchXY, final Object dragInfo, 3021 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 3022 final Runnable exitSpringLoadedRunnable = new Runnable() { 3023 @Override 3024 public void run() { 3025 mLauncher.exitSpringLoadedDragModeDelayed(true, false, null); 3026 } 3027 }; 3028 3029 ItemInfo info = (ItemInfo) dragInfo; 3030 int spanX = info.spanX; 3031 int spanY = info.spanY; 3032 if (mDragInfo != null) { 3033 spanX = mDragInfo.spanX; 3034 spanY = mDragInfo.spanY; 3035 } 3036 3037 final long container = mLauncher.isHotseatLayout(cellLayout) ? 3038 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 3039 LauncherSettings.Favorites.CONTAINER_DESKTOP; 3040 final int screen = indexOfChild(cellLayout); 3041 if (!mLauncher.isHotseatLayout(cellLayout) && screen != mCurrentPage 3042 && mState != State.SPRING_LOADED) { 3043 snapToPage(screen); 3044 } 3045 3046 if (info instanceof PendingAddItemInfo) { 3047 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 3048 3049 boolean findNearestVacantCell = true; 3050 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 3051 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3052 cellLayout, mTargetCell); 3053 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3054 mDragViewVisualCenter[1], mTargetCell); 3055 if (willCreateUserFolder((ItemInfo) d.dragInfo, cellLayout, mTargetCell, 3056 distance, true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 3057 cellLayout, mTargetCell, distance)) { 3058 findNearestVacantCell = false; 3059 } 3060 } 3061 3062 final ItemInfo item = (ItemInfo) d.dragInfo; 3063 boolean updateWidgetSize = false; 3064 if (findNearestVacantCell) { 3065 int minSpanX = item.spanX; 3066 int minSpanY = item.spanY; 3067 if (item.minSpanX > 0 && item.minSpanY > 0) { 3068 minSpanX = item.minSpanX; 3069 minSpanY = item.minSpanY; 3070 } 3071 int[] resultSpan = new int[2]; 3072 mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], 3073 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, info.spanX, info.spanY, 3074 null, mTargetCell, resultSpan, CellLayout.MODE_ON_DROP_EXTERNAL); 3075 3076 if (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY) { 3077 updateWidgetSize = true; 3078 } 3079 item.spanX = resultSpan[0]; 3080 item.spanY = resultSpan[1]; 3081 } 3082 3083 Runnable onAnimationCompleteRunnable = new Runnable() { 3084 @Override 3085 public void run() { 3086 // When dragging and dropping from customization tray, we deal with creating 3087 // widgets/shortcuts/folders in a slightly different way 3088 switch (pendingInfo.itemType) { 3089 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 3090 int span[] = new int[2]; 3091 span[0] = item.spanX; 3092 span[1] = item.spanY; 3093 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, 3094 container, screen, mTargetCell, span, null); 3095 break; 3096 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3097 mLauncher.processShortcutFromDrop(pendingInfo.componentName, 3098 container, screen, mTargetCell, null); 3099 break; 3100 default: 3101 throw new IllegalStateException("Unknown item type: " + 3102 pendingInfo.itemType); 3103 } 3104 } 3105 }; 3106 View finalView = pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET 3107 ? ((PendingAddWidgetInfo) pendingInfo).boundWidget : null; 3108 3109 if (finalView instanceof AppWidgetHostView && updateWidgetSize) { 3110 AppWidgetHostView awhv = (AppWidgetHostView) finalView; 3111 AppWidgetResizeFrame.updateWidgetSizeRanges(awhv, mLauncher, item.spanX, 3112 item.spanY); 3113 } 3114 3115 int animationStyle = ANIMATE_INTO_POSITION_AND_DISAPPEAR; 3116 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && 3117 ((PendingAddWidgetInfo) pendingInfo).info.configure != null) { 3118 animationStyle = ANIMATE_INTO_POSITION_AND_REMAIN; 3119 } 3120 animateWidgetDrop(info, cellLayout, d.dragView, onAnimationCompleteRunnable, 3121 animationStyle, finalView, true); 3122 } else { 3123 // This is for other drag/drop cases, like dragging from All Apps 3124 View view = null; 3125 3126 switch (info.itemType) { 3127 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 3128 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3129 if (info.container == NO_ID && info instanceof ApplicationInfo) { 3130 // Came from all apps -- make a copy 3131 info = new ShortcutInfo((ApplicationInfo) info); 3132 } 3133 view = mLauncher.createShortcut(R.layout.application, cellLayout, 3134 (ShortcutInfo) info); 3135 break; 3136 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 3137 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 3138 (FolderInfo) info, mIconCache); 3139 break; 3140 default: 3141 throw new IllegalStateException("Unknown item type: " + info.itemType); 3142 } 3143 3144 // First we find the cell nearest to point at which the item is 3145 // dropped, without any consideration to whether there is an item there. 3146 if (touchXY != null) { 3147 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3148 cellLayout, mTargetCell); 3149 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3150 mDragViewVisualCenter[1], mTargetCell); 3151 d.postAnimationRunnable = exitSpringLoadedRunnable; 3152 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, distance, 3153 true, d.dragView, d.postAnimationRunnable)) { 3154 return; 3155 } 3156 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, distance, d, 3157 true)) { 3158 return; 3159 } 3160 } 3161 3162 if (touchXY != null) { 3163 // when dragging and dropping, just find the closest free spot 3164 mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], 3165 (int) mDragViewVisualCenter[1], 1, 1, 1, 1, 3166 null, mTargetCell, null, CellLayout.MODE_ON_DROP_EXTERNAL); 3167 } else { 3168 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3169 } 3170 addInScreen(view, container, screen, mTargetCell[0], mTargetCell[1], info.spanX, 3171 info.spanY, insertAtFirst); 3172 cellLayout.onDropChild(view); 3173 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 3174 cellLayout.getShortcutsAndWidgets().measureChild(view); 3175 3176 3177 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, 3178 lp.cellX, lp.cellY); 3179 3180 if (d.dragView != null) { 3181 // We wrap the animation call in the temporary set and reset of the current 3182 // cellLayout to its final transform -- this means we animate the drag view to 3183 // the correct final location. 3184 setFinalTransitionTransform(cellLayout); 3185 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 3186 exitSpringLoadedRunnable); 3187 resetTransitionTransform(cellLayout); 3188 } 3189 } 3190 } 3191 3192 public Bitmap createWidgetBitmap(ItemInfo widgetInfo, View layout) { 3193 int[] unScaledSize = mLauncher.getWorkspace().estimateItemSize(widgetInfo.spanX, 3194 widgetInfo.spanY, widgetInfo, false); 3195 int visibility = layout.getVisibility(); 3196 layout.setVisibility(VISIBLE); 3197 3198 int width = MeasureSpec.makeMeasureSpec(unScaledSize[0], MeasureSpec.EXACTLY); 3199 int height = MeasureSpec.makeMeasureSpec(unScaledSize[1], MeasureSpec.EXACTLY); 3200 Bitmap b = Bitmap.createBitmap(unScaledSize[0], unScaledSize[1], 3201 Bitmap.Config.ARGB_8888); 3202 Canvas c = new Canvas(b); 3203 3204 layout.measure(width, height); 3205 layout.layout(0, 0, unScaledSize[0], unScaledSize[1]); 3206 layout.draw(c); 3207 c.setBitmap(null); 3208 layout.setVisibility(visibility); 3209 return b; 3210 } 3211 3212 private void getFinalPositionForDropAnimation(int[] loc, float[] scaleXY, 3213 DragView dragView, CellLayout layout, ItemInfo info, int[] targetCell, 3214 boolean external, boolean scale) { 3215 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 3216 // location and size on the home screen. 3217 int spanX = info.spanX; 3218 int spanY = info.spanY; 3219 3220 Rect r = estimateItemPosition(layout, info, targetCell[0], targetCell[1], spanX, spanY); 3221 loc[0] = r.left; 3222 loc[1] = r.top; 3223 3224 setFinalTransitionTransform(layout); 3225 float cellLayoutScale = 3226 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(layout, loc); 3227 resetTransitionTransform(layout); 3228 3229 float dragViewScaleX; 3230 float dragViewScaleY; 3231 if (scale) { 3232 dragViewScaleX = (1.0f * r.width()) / dragView.getMeasuredWidth(); 3233 dragViewScaleY = (1.0f * r.height()) / dragView.getMeasuredHeight(); 3234 } else { 3235 dragViewScaleX = 1f; 3236 dragViewScaleY = 1f; 3237 } 3238 3239 // The animation will scale the dragView about its center, so we need to center about 3240 // the final location. 3241 loc[0] -= (dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 3242 loc[1] -= (dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 3243 3244 scaleXY[0] = dragViewScaleX * cellLayoutScale; 3245 scaleXY[1] = dragViewScaleY * cellLayoutScale; 3246 } 3247 3248 public void animateWidgetDrop(ItemInfo info, CellLayout cellLayout, DragView dragView, 3249 final Runnable onCompleteRunnable, int animationType, final View finalView, 3250 boolean external) { 3251 Rect from = new Rect(); 3252 mLauncher.getDragLayer().getViewRectRelativeToSelf(dragView, from); 3253 3254 int[] finalPos = new int[2]; 3255 float scaleXY[] = new float[2]; 3256 boolean scalePreview = !(info instanceof PendingAddShortcutInfo); 3257 getFinalPositionForDropAnimation(finalPos, scaleXY, dragView, cellLayout, info, mTargetCell, 3258 external, scalePreview); 3259 3260 Resources res = mLauncher.getResources(); 3261 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration) - 200; 3262 3263 // In the case where we've prebound the widget, we remove it from the DragLayer 3264 if (finalView instanceof AppWidgetHostView && external) { 3265 Log.d(TAG, "6557954 Animate widget drop, final view is appWidgetHostView"); 3266 mLauncher.getDragLayer().removeView(finalView); 3267 } 3268 if ((animationType == ANIMATE_INTO_POSITION_AND_RESIZE || external) && finalView != null) { 3269 Bitmap crossFadeBitmap = createWidgetBitmap(info, finalView); 3270 dragView.setCrossFadeBitmap(crossFadeBitmap); 3271 dragView.crossFade((int) (duration * 0.8f)); 3272 } else if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && external) { 3273 scaleXY[0] = scaleXY[1] = Math.min(scaleXY[0], scaleXY[1]); 3274 } 3275 3276 DragLayer dragLayer = mLauncher.getDragLayer(); 3277 if (animationType == CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION) { 3278 mLauncher.getDragLayer().animateViewIntoPosition(dragView, finalPos, 0f, 0.1f, 0.1f, 3279 DragLayer.ANIMATION_END_DISAPPEAR, onCompleteRunnable, duration); 3280 } else { 3281 int endStyle; 3282 if (animationType == ANIMATE_INTO_POSITION_AND_REMAIN) { 3283 endStyle = DragLayer.ANIMATION_END_REMAIN_VISIBLE; 3284 } else { 3285 endStyle = DragLayer.ANIMATION_END_DISAPPEAR;; 3286 } 3287 3288 Runnable onComplete = new Runnable() { 3289 @Override 3290 public void run() { 3291 if (finalView != null) { 3292 finalView.setVisibility(VISIBLE); 3293 } 3294 if (onCompleteRunnable != null) { 3295 onCompleteRunnable.run(); 3296 } 3297 } 3298 }; 3299 dragLayer.animateViewIntoPosition(dragView, from.left, from.top, finalPos[0], 3300 finalPos[1], 1, 1, 1, scaleXY[0], scaleXY[1], onComplete, endStyle, 3301 duration, this); 3302 } 3303 } 3304 3305 public void setFinalTransitionTransform(CellLayout layout) { 3306 if (isSwitchingState()) { 3307 int index = indexOfChild(layout); 3308 mCurrentScaleX = layout.getScaleX(); 3309 mCurrentScaleY = layout.getScaleY(); 3310 mCurrentTranslationX = layout.getTranslationX(); 3311 mCurrentTranslationY = layout.getTranslationY(); 3312 mCurrentRotationY = layout.getRotationY(); 3313 layout.setScaleX(mNewScaleXs[index]); 3314 layout.setScaleY(mNewScaleYs[index]); 3315 layout.setTranslationX(mNewTranslationXs[index]); 3316 layout.setTranslationY(mNewTranslationYs[index]); 3317 layout.setRotationY(mNewRotationYs[index]); 3318 } 3319 } 3320 public void resetTransitionTransform(CellLayout layout) { 3321 if (isSwitchingState()) { 3322 mCurrentScaleX = layout.getScaleX(); 3323 mCurrentScaleY = layout.getScaleY(); 3324 mCurrentTranslationX = layout.getTranslationX(); 3325 mCurrentTranslationY = layout.getTranslationY(); 3326 mCurrentRotationY = layout.getRotationY(); 3327 layout.setScaleX(mCurrentScaleX); 3328 layout.setScaleY(mCurrentScaleY); 3329 layout.setTranslationX(mCurrentTranslationX); 3330 layout.setTranslationY(mCurrentTranslationY); 3331 layout.setRotationY(mCurrentRotationY); 3332 } 3333 } 3334 3335 /** 3336 * Return the current {@link CellLayout}, correctly picking the destination 3337 * screen while a scroll is in progress. 3338 */ 3339 public CellLayout getCurrentDropLayout() { 3340 return (CellLayout) getChildAt(getNextPage()); 3341 } 3342 3343 /** 3344 * Return the current CellInfo describing our current drag; this method exists 3345 * so that Launcher can sync this object with the correct info when the activity is created/ 3346 * destroyed 3347 * 3348 */ 3349 public CellLayout.CellInfo getDragInfo() { 3350 return mDragInfo; 3351 } 3352 3353 /** 3354 * Calculate the nearest cell where the given object would be dropped. 3355 * 3356 * pixelX and pixelY should be in the coordinate system of layout 3357 */ 3358 private int[] findNearestArea(int pixelX, int pixelY, 3359 int spanX, int spanY, CellLayout layout, int[] recycle) { 3360 return layout.findNearestArea( 3361 pixelX, pixelY, spanX, spanY, recycle); 3362 } 3363 3364 void setup(DragController dragController) { 3365 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3366 mDragController = dragController; 3367 3368 // hardware layers on children are enabled on startup, but should be disabled until 3369 // needed 3370 updateChildrenLayersEnabled(false); 3371 setWallpaperDimension(); 3372 } 3373 3374 /** 3375 * Called at the end of a drag which originated on the workspace. 3376 */ 3377 public void onDropCompleted(View target, DragObject d, boolean isFlingToDelete, 3378 boolean success) { 3379 if (success) { 3380 if (target != this) { 3381 if (mDragInfo != null) { 3382 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 3383 if (mDragInfo.cell instanceof DropTarget) { 3384 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 3385 } 3386 } 3387 } 3388 } else if (mDragInfo != null) { 3389 CellLayout cellLayout; 3390 if (mLauncher.isHotseatLayout(target)) { 3391 cellLayout = mLauncher.getHotseat().getLayout(); 3392 } else { 3393 cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3394 } 3395 cellLayout.onDropChild(mDragInfo.cell); 3396 } 3397 if (d.cancelled && mDragInfo.cell != null) { 3398 mDragInfo.cell.setVisibility(VISIBLE); 3399 } 3400 mDragOutline = null; 3401 mDragInfo = null; 3402 3403 // Hide the scrolling indicator after you pick up an item 3404 hideScrollingIndicator(false); 3405 } 3406 3407 void updateItemLocationsInDatabase(CellLayout cl) { 3408 int count = cl.getShortcutsAndWidgets().getChildCount(); 3409 3410 int screen = indexOfChild(cl); 3411 int container = Favorites.CONTAINER_DESKTOP; 3412 3413 if (mLauncher.isHotseatLayout(cl)) { 3414 screen = -1; 3415 container = Favorites.CONTAINER_HOTSEAT; 3416 } 3417 3418 for (int i = 0; i < count; i++) { 3419 View v = cl.getShortcutsAndWidgets().getChildAt(i); 3420 ItemInfo info = (ItemInfo) v.getTag(); 3421 // Null check required as the AllApps button doesn't have an item info 3422 if (info != null && info.requiresDbUpdate) { 3423 info.requiresDbUpdate = false; 3424 LauncherModel.modifyItemInDatabase(mLauncher, info, container, screen, info.cellX, 3425 info.cellY, info.spanX, info.spanY); 3426 } 3427 } 3428 } 3429 3430 ArrayList<ComponentName> stripDuplicateApps() { 3431 ArrayList<ComponentName> uniqueIntents = new ArrayList<ComponentName>(); 3432 stripDuplicateApps((CellLayout) mLauncher.getHotseat().getLayout(), uniqueIntents); 3433 int count = getChildCount(); 3434 for (int i = 0; i < count; i++) { 3435 CellLayout cl = (CellLayout) getChildAt(i); 3436 stripDuplicateApps(cl, uniqueIntents); 3437 } 3438 return uniqueIntents; 3439 } 3440 3441 void stripDuplicateApps(CellLayout cl, ArrayList<ComponentName> uniqueIntents) { 3442 int count = cl.getShortcutsAndWidgets().getChildCount(); 3443 3444 ArrayList<View> children = new ArrayList<View>(); 3445 for (int i = 0; i < count; i++) { 3446 View v = cl.getShortcutsAndWidgets().getChildAt(i); 3447 children.add(v); 3448 } 3449 3450 for (int i = 0; i < count; i++) { 3451 View v = children.get(i); 3452 ItemInfo info = (ItemInfo) v.getTag(); 3453 // Null check required as the AllApps button doesn't have an item info 3454 if (info instanceof ShortcutInfo) { 3455 ShortcutInfo si = (ShortcutInfo) info; 3456 ComponentName cn = si.intent.getComponent(); 3457 3458 if (!uniqueIntents.contains(cn)) { 3459 uniqueIntents.add(cn); 3460 } else { 3461 cl.removeViewInLayout(v); 3462 LauncherModel.deleteItemFromDatabase(mLauncher, si); 3463 } 3464 } 3465 if (v instanceof FolderIcon) { 3466 FolderIcon fi = (FolderIcon) v; 3467 ArrayList<View> items = fi.getFolder().getItemsInReadingOrder(); 3468 for (int j = 0; j < items.size(); j++) { 3469 if (items.get(j).getTag() instanceof ShortcutInfo) { 3470 ShortcutInfo si = (ShortcutInfo) items.get(j).getTag(); 3471 ComponentName cn = si.intent.getComponent(); 3472 3473 if (!uniqueIntents.contains(cn)) { 3474 uniqueIntents.add(cn); 3475 } else { 3476 fi.getFolderInfo().remove(si); 3477 LauncherModel.deleteItemFromDatabase(mLauncher, si); 3478 } 3479 } 3480 } 3481 } 3482 } 3483 } 3484 3485 void saveWorkspaceToDb() { 3486 saveWorkspaceScreenToDb((CellLayout) mLauncher.getHotseat().getLayout()); 3487 int count = getChildCount(); 3488 for (int i = 0; i < count; i++) { 3489 CellLayout cl = (CellLayout) getChildAt(i); 3490 saveWorkspaceScreenToDb(cl); 3491 } 3492 } 3493 3494 void saveWorkspaceScreenToDb(CellLayout cl) { 3495 int count = cl.getShortcutsAndWidgets().getChildCount(); 3496 3497 int screen = indexOfChild(cl); 3498 int container = Favorites.CONTAINER_DESKTOP; 3499 3500 if (mLauncher.isHotseatLayout(cl)) { 3501 screen = -1; 3502 container = Favorites.CONTAINER_HOTSEAT; 3503 } 3504 3505 for (int i = 0; i < count; i++) { 3506 View v = cl.getShortcutsAndWidgets().getChildAt(i); 3507 ItemInfo info = (ItemInfo) v.getTag(); 3508 // Null check required as the AllApps button doesn't have an item info 3509 if (info != null) { 3510 LauncherModel.addItemToDatabase(mLauncher, info, container, screen, info.cellX, 3511 info.cellY, false); 3512 } 3513 if (v instanceof FolderIcon) { 3514 FolderIcon fi = (FolderIcon) v; 3515 fi.getFolder().addItemLocationsInDatabase(); 3516 } 3517 } 3518 } 3519 3520 @Override 3521 public boolean supportsFlingToDelete() { 3522 return true; 3523 } 3524 3525 @Override 3526 public void onFlingToDelete(DragObject d, int x, int y, PointF vec) { 3527 // Do nothing 3528 } 3529 3530 @Override 3531 public void onFlingToDeleteCompleted() { 3532 // Do nothing 3533 } 3534 3535 public boolean isDropEnabled() { 3536 return true; 3537 } 3538 3539 @Override 3540 protected void onRestoreInstanceState(Parcelable state) { 3541 super.onRestoreInstanceState(state); 3542 Launcher.setScreen(mCurrentPage); 3543 } 3544 3545 @Override 3546 protected void dispatchRestoreInstanceState(SparseArray<Parcelable> container) { 3547 // We don't dispatch restoreInstanceState to our children using this code path. 3548 // Some pages will be restored immediately as their items are bound immediately, and 3549 // others we will need to wait until after their items are bound. 3550 mSavedStates = container; 3551 } 3552 3553 public void restoreInstanceStateForChild(int child) { 3554 if (mSavedStates != null) { 3555 mRestoredPages.add(child); 3556 CellLayout cl = (CellLayout) getChildAt(child); 3557 cl.restoreInstanceState(mSavedStates); 3558 } 3559 } 3560 3561 public void restoreInstanceStateForRemainingPages() { 3562 int count = getChildCount(); 3563 for (int i = 0; i < count; i++) { 3564 if (!mRestoredPages.contains(i)) { 3565 restoreInstanceStateForChild(i); 3566 } 3567 } 3568 mRestoredPages.clear(); 3569 } 3570 3571 @Override 3572 public void scrollLeft() { 3573 if (!isSmall() && !mIsSwitchingState) { 3574 super.scrollLeft(); 3575 } 3576 Folder openFolder = getOpenFolder(); 3577 if (openFolder != null) { 3578 openFolder.completeDragExit(); 3579 } 3580 } 3581 3582 @Override 3583 public void scrollRight() { 3584 if (!isSmall() && !mIsSwitchingState) { 3585 super.scrollRight(); 3586 } 3587 Folder openFolder = getOpenFolder(); 3588 if (openFolder != null) { 3589 openFolder.completeDragExit(); 3590 } 3591 } 3592 3593 @Override 3594 public boolean onEnterScrollArea(int x, int y, int direction) { 3595 // Ignore the scroll area if we are dragging over the hot seat 3596 boolean isPortrait = !LauncherApplication.isScreenLandscape(getContext()); 3597 if (mLauncher.getHotseat() != null && isPortrait) { 3598 Rect r = new Rect(); 3599 mLauncher.getHotseat().getHitRect(r); 3600 if (r.contains(x, y)) { 3601 return false; 3602 } 3603 } 3604 3605 boolean result = false; 3606 if (!isSmall() && !mIsSwitchingState) { 3607 mInScrollArea = true; 3608 3609 final int page = getNextPage() + 3610 (direction == DragController.SCROLL_LEFT ? -1 : 1); 3611 3612 // We always want to exit the current layout to ensure parity of enter / exit 3613 setCurrentDropLayout(null); 3614 3615 if (0 <= page && page < getChildCount()) { 3616 CellLayout layout = (CellLayout) getChildAt(page); 3617 setCurrentDragOverlappingLayout(layout); 3618 3619 // Workspace is responsible for drawing the edge glow on adjacent pages, 3620 // so we need to redraw the workspace when this may have changed. 3621 invalidate(); 3622 result = true; 3623 } 3624 } 3625 return result; 3626 } 3627 3628 @Override 3629 public boolean onExitScrollArea() { 3630 boolean result = false; 3631 if (mInScrollArea) { 3632 invalidate(); 3633 CellLayout layout = getCurrentDropLayout(); 3634 setCurrentDropLayout(layout); 3635 setCurrentDragOverlappingLayout(layout); 3636 3637 result = true; 3638 mInScrollArea = false; 3639 } 3640 return result; 3641 } 3642 3643 private void onResetScrollArea() { 3644 setCurrentDragOverlappingLayout(null); 3645 mInScrollArea = false; 3646 } 3647 3648 /** 3649 * Returns a specific CellLayout 3650 */ 3651 CellLayout getParentCellLayoutForView(View v) { 3652 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3653 for (CellLayout layout : layouts) { 3654 if (layout.getShortcutsAndWidgets().indexOfChild(v) > -1) { 3655 return layout; 3656 } 3657 } 3658 return null; 3659 } 3660 3661 /** 3662 * Returns a list of all the CellLayouts in the workspace. 3663 */ 3664 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3665 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3666 int screenCount = getChildCount(); 3667 for (int screen = 0; screen < screenCount; screen++) { 3668 layouts.add(((CellLayout) getChildAt(screen))); 3669 } 3670 if (mLauncher.getHotseat() != null) { 3671 layouts.add(mLauncher.getHotseat().getLayout()); 3672 } 3673 return layouts; 3674 } 3675 3676 /** 3677 * We should only use this to search for specific children. Do not use this method to modify 3678 * ShortcutsAndWidgetsContainer directly. Includes ShortcutAndWidgetContainers from 3679 * the hotseat and workspace pages 3680 */ 3681 ArrayList<ShortcutAndWidgetContainer> getAllShortcutAndWidgetContainers() { 3682 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3683 new ArrayList<ShortcutAndWidgetContainer>(); 3684 int screenCount = getChildCount(); 3685 for (int screen = 0; screen < screenCount; screen++) { 3686 childrenLayouts.add(((CellLayout) getChildAt(screen)).getShortcutsAndWidgets()); 3687 } 3688 if (mLauncher.getHotseat() != null) { 3689 childrenLayouts.add(mLauncher.getHotseat().getLayout().getShortcutsAndWidgets()); 3690 } 3691 return childrenLayouts; 3692 } 3693 3694 public Folder getFolderForTag(Object tag) { 3695 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3696 getAllShortcutAndWidgetContainers(); 3697 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3698 int count = layout.getChildCount(); 3699 for (int i = 0; i < count; i++) { 3700 View child = layout.getChildAt(i); 3701 if (child instanceof Folder) { 3702 Folder f = (Folder) child; 3703 if (f.getInfo() == tag && f.getInfo().opened) { 3704 return f; 3705 } 3706 } 3707 } 3708 } 3709 return null; 3710 } 3711 3712 public View getViewForTag(Object tag) { 3713 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3714 getAllShortcutAndWidgetContainers(); 3715 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3716 int count = layout.getChildCount(); 3717 for (int i = 0; i < count; i++) { 3718 View child = layout.getChildAt(i); 3719 if (child.getTag() == tag) { 3720 return child; 3721 } 3722 } 3723 } 3724 return null; 3725 } 3726 3727 void clearDropTargets() { 3728 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3729 getAllShortcutAndWidgetContainers(); 3730 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3731 int childCount = layout.getChildCount(); 3732 for (int j = 0; j < childCount; j++) { 3733 View v = layout.getChildAt(j); 3734 if (v instanceof DropTarget) { 3735 mDragController.removeDropTarget((DropTarget) v); 3736 } 3737 } 3738 } 3739 } 3740 3741 // Removes ALL items that match a given package name, this is usually called when a package 3742 // has been removed and we want to remove all components (widgets, shortcuts, apps) that 3743 // belong to that package. 3744 void removeItemsByPackageName(final ArrayList<String> packages) { 3745 HashSet<String> packageNames = new HashSet<String>(); 3746 packageNames.addAll(packages); 3747 3748 // Just create a hash table of all the specific components that this will affect 3749 HashSet<ComponentName> cns = new HashSet<ComponentName>(); 3750 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3751 for (CellLayout layoutParent : cellLayouts) { 3752 ViewGroup layout = layoutParent.getShortcutsAndWidgets(); 3753 int childCount = layout.getChildCount(); 3754 for (int i = 0; i < childCount; ++i) { 3755 View view = layout.getChildAt(i); 3756 Object tag = view.getTag(); 3757 3758 if (tag instanceof ShortcutInfo) { 3759 ShortcutInfo info = (ShortcutInfo) tag; 3760 ComponentName cn = info.intent.getComponent(); 3761 if ((cn != null) && packageNames.contains(cn.getPackageName())) { 3762 cns.add(cn); 3763 } 3764 } else if (tag instanceof FolderInfo) { 3765 FolderInfo info = (FolderInfo) tag; 3766 for (ShortcutInfo s : info.contents) { 3767 ComponentName cn = s.intent.getComponent(); 3768 if ((cn != null) && packageNames.contains(cn.getPackageName())) { 3769 cns.add(cn); 3770 } 3771 } 3772 } else if (tag instanceof LauncherAppWidgetInfo) { 3773 LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3774 ComponentName cn = info.providerName; 3775 if ((cn != null) && packageNames.contains(cn.getPackageName())) { 3776 cns.add(cn); 3777 } 3778 } 3779 } 3780 } 3781 3782 // Remove all the things 3783 removeItemsByComponentName(cns); 3784 } 3785 3786 // Removes items that match the application info specified, when applications are removed 3787 // as a part of an update, this is called to ensure that other widgets and application 3788 // shortcuts are not removed. 3789 void removeItemsByApplicationInfo(final ArrayList<ApplicationInfo> appInfos) { 3790 // Just create a hash table of all the specific components that this will affect 3791 HashSet<ComponentName> cns = new HashSet<ComponentName>(); 3792 for (ApplicationInfo info : appInfos) { 3793 cns.add(info.componentName); 3794 } 3795 3796 // Remove all the things 3797 removeItemsByComponentName(cns); 3798 } 3799 3800 void removeItemsByComponentName(final HashSet<ComponentName> componentNames) { 3801 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3802 for (final CellLayout layoutParent: cellLayouts) { 3803 final ViewGroup layout = layoutParent.getShortcutsAndWidgets(); 3804 3805 // Avoid ANRs by treating each screen separately 3806 post(new Runnable() { 3807 public void run() { 3808 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3809 childrenToRemove.clear(); 3810 3811 int childCount = layout.getChildCount(); 3812 for (int j = 0; j < childCount; j++) { 3813 final View view = layout.getChildAt(j); 3814 Object tag = view.getTag(); 3815 3816 if (tag instanceof ShortcutInfo) { 3817 final ShortcutInfo info = (ShortcutInfo) tag; 3818 final Intent intent = info.intent; 3819 final ComponentName name = intent.getComponent(); 3820 3821 if (name != null) { 3822 if (componentNames.contains(name)) { 3823 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3824 childrenToRemove.add(view); 3825 } 3826 } 3827 } else if (tag instanceof FolderInfo) { 3828 final FolderInfo info = (FolderInfo) tag; 3829 final ArrayList<ShortcutInfo> contents = info.contents; 3830 final int contentsCount = contents.size(); 3831 final ArrayList<ShortcutInfo> appsToRemoveFromFolder = 3832 new ArrayList<ShortcutInfo>(); 3833 3834 for (int k = 0; k < contentsCount; k++) { 3835 final ShortcutInfo appInfo = contents.get(k); 3836 final Intent intent = appInfo.intent; 3837 final ComponentName name = intent.getComponent(); 3838 3839 if (name != null) { 3840 if (componentNames.contains(name)) { 3841 appsToRemoveFromFolder.add(appInfo); 3842 } 3843 } 3844 } 3845 for (ShortcutInfo item: appsToRemoveFromFolder) { 3846 info.remove(item); 3847 LauncherModel.deleteItemFromDatabase(mLauncher, item); 3848 } 3849 } else if (tag instanceof LauncherAppWidgetInfo) { 3850 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3851 final ComponentName provider = info.providerName; 3852 if (provider != null) { 3853 if (componentNames.contains(provider)) { 3854 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3855 childrenToRemove.add(view); 3856 } 3857 } 3858 } 3859 } 3860 3861 childCount = childrenToRemove.size(); 3862 for (int j = 0; j < childCount; j++) { 3863 View child = childrenToRemove.get(j); 3864 // Note: We can not remove the view directly from CellLayoutChildren as this 3865 // does not re-mark the spaces as unoccupied. 3866 layoutParent.removeViewInLayout(child); 3867 if (child instanceof DropTarget) { 3868 mDragController.removeDropTarget((DropTarget)child); 3869 } 3870 } 3871 3872 if (childCount > 0) { 3873 layout.requestLayout(); 3874 layout.invalidate(); 3875 } 3876 } 3877 }); 3878 } 3879 3880 // Clean up new-apps animation list 3881 final Context context = getContext(); 3882 post(new Runnable() { 3883 @Override 3884 public void run() { 3885 String spKey = LauncherApplication.getSharedPreferencesKey(); 3886 SharedPreferences sp = context.getSharedPreferences(spKey, 3887 Context.MODE_PRIVATE); 3888 Set<String> newApps = sp.getStringSet(InstallShortcutReceiver.NEW_APPS_LIST_KEY, 3889 null); 3890 3891 // Remove all queued items that match the same package 3892 if (newApps != null) { 3893 synchronized (newApps) { 3894 Iterator<String> iter = newApps.iterator(); 3895 while (iter.hasNext()) { 3896 try { 3897 Intent intent = Intent.parseUri(iter.next(), 0); 3898 if (componentNames.contains(intent.getComponent())) { 3899 iter.remove(); 3900 } 3901 3902 // It is possible that we've queued an item to be loaded, yet it has 3903 // not been added to the workspace, so remove those items as well. 3904 ArrayList<ItemInfo> shortcuts; 3905 shortcuts = LauncherModel.getWorkspaceShortcutItemInfosWithIntent( 3906 intent); 3907 for (ItemInfo info : shortcuts) { 3908 LauncherModel.deleteItemFromDatabase(context, info); 3909 } 3910 } catch (URISyntaxException e) {} 3911 } 3912 } 3913 } 3914 } 3915 }); 3916 } 3917 3918 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3919 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = getAllShortcutAndWidgetContainers(); 3920 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3921 int childCount = layout.getChildCount(); 3922 for (int j = 0; j < childCount; j++) { 3923 final View view = layout.getChildAt(j); 3924 Object tag = view.getTag(); 3925 if (tag instanceof ShortcutInfo) { 3926 ShortcutInfo info = (ShortcutInfo) tag; 3927 // We need to check for ACTION_MAIN otherwise getComponent() might 3928 // return null for some shortcuts (for instance, for shortcuts to 3929 // web pages.) 3930 final Intent intent = info.intent; 3931 final ComponentName name = intent.getComponent(); 3932 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3933 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3934 final int appCount = apps.size(); 3935 for (int k = 0; k < appCount; k++) { 3936 ApplicationInfo app = apps.get(k); 3937 if (app.componentName.equals(name)) { 3938 BubbleTextView shortcut = (BubbleTextView) view; 3939 info.updateIcon(mIconCache); 3940 info.title = app.title.toString(); 3941 shortcut.applyFromShortcutInfo(info, mIconCache); 3942 } 3943 } 3944 } 3945 } 3946 } 3947 } 3948 } 3949 3950 void moveToDefaultScreen(boolean animate) { 3951 if (!isSmall()) { 3952 if (animate) { 3953 snapToPage(mDefaultPage); 3954 } else { 3955 setCurrentPage(mDefaultPage); 3956 } 3957 } 3958 getChildAt(mDefaultPage).requestFocus(); 3959 } 3960 3961 @Override 3962 public void syncPages() { 3963 } 3964 3965 @Override 3966 public void syncPageItems(int page, boolean immediate) { 3967 } 3968 3969 @Override 3970 protected String getCurrentPageDescription() { 3971 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 3972 return String.format(getContext().getString(R.string.workspace_scroll_format), 3973 page + 1, getChildCount()); 3974 } 3975 3976 public void getLocationInDragLayer(int[] loc) { 3977 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 3978 } 3979 3980 void setFadeForOverScroll(float fade) { 3981 if (!isScrollingIndicatorEnabled()) return; 3982 3983 mOverscrollFade = fade; 3984 float reducedFade = 0.5f + 0.5f * (1 - fade); 3985 final ViewGroup parent = (ViewGroup) getParent(); 3986 final ImageView qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3987 final ImageView dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3988 final View scrollIndicator = getScrollingIndicator(); 3989 3990 cancelScrollingIndicatorAnimations(); 3991 if (qsbDivider != null) qsbDivider.setAlpha(reducedFade); 3992 if (dockDivider != null) dockDivider.setAlpha(reducedFade); 3993 scrollIndicator.setAlpha(1 - fade); 3994 } 3995} 3996