Workspace.java revision 487f7dd3059621527eb439d7d51d34e00293f9b1
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.launcher2; 18 19import android.animation.Animator; 20import android.animation.AnimatorSet; 21import android.animation.ObjectAnimator; 22import android.animation.TimeInterpolator; 23import android.animation.ValueAnimator; 24import android.animation.ValueAnimator.AnimatorUpdateListener; 25import android.app.WallpaperManager; 26import android.appwidget.AppWidgetHostView; 27import android.appwidget.AppWidgetProviderInfo; 28import android.content.ComponentName; 29import android.content.Context; 30import android.content.Intent; 31import android.content.SharedPreferences; 32import android.content.res.Resources; 33import android.content.res.TypedArray; 34import android.graphics.Bitmap; 35import android.graphics.Canvas; 36import android.graphics.Matrix; 37import android.graphics.Point; 38import android.graphics.PointF; 39import android.graphics.Rect; 40import android.graphics.Region.Op; 41import android.graphics.drawable.Drawable; 42import android.os.IBinder; 43import android.os.Parcelable; 44import android.util.AttributeSet; 45import android.util.Log; 46import android.view.Display; 47import android.view.MotionEvent; 48import android.view.View; 49import android.view.ViewGroup; 50import android.view.animation.DecelerateInterpolator; 51import android.widget.ImageView; 52import android.widget.TextView; 53 54import com.android.launcher.R; 55import com.android.launcher2.FolderIcon.FolderRingAnimator; 56import com.android.launcher2.LauncherSettings.Favorites; 57 58import java.net.URISyntaxException; 59import java.util.ArrayList; 60import java.util.HashSet; 61import java.util.Iterator; 62import java.util.Set; 63 64/** 65 * The workspace is a wide area with a wallpaper and a finite number of pages. 66 * Each page contains a number of icons, folders or widgets the user can 67 * interact with. A workspace is meant to be used with a fixed width only. 68 */ 69public class Workspace extends SmoothPagedView 70 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 71 DragController.DragListener, LauncherTransitionable, ViewGroup.OnHierarchyChangeListener { 72 private static final String TAG = "Launcher.Workspace"; 73 74 // Y rotation to apply to the workspace screens 75 private static final float WORKSPACE_OVERSCROLL_ROTATION = 24f; 76 77 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 78 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 79 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 80 81 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 82 private static final int ADJACENT_SCREEN_DROP_DURATION = 300; 83 private static final int FLING_THRESHOLD_VELOCITY = 500; 84 85 // These animators are used to fade the children's outlines 86 private ObjectAnimator mChildrenOutlineFadeInAnimation; 87 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 88 private float mChildrenOutlineAlpha = 0; 89 90 // These properties refer to the background protection gradient used for AllApps and Customize 91 private ValueAnimator mBackgroundFadeInAnimation; 92 private ValueAnimator mBackgroundFadeOutAnimation; 93 private Drawable mBackground; 94 boolean mDrawBackground = true; 95 private float mBackgroundAlpha = 0; 96 private float mOverScrollMaxBackgroundAlpha = 0.0f; 97 98 private float mWallpaperScrollRatio = 1.0f; 99 100 private final WallpaperManager mWallpaperManager; 101 private IBinder mWindowToken; 102 private static final float WALLPAPER_SCREENS_SPAN = 2f; 103 104 private int mDefaultPage; 105 106 /** 107 * CellInfo for the cell that is currently being dragged 108 */ 109 private CellLayout.CellInfo mDragInfo; 110 111 /** 112 * Target drop area calculated during last acceptDrop call. 113 */ 114 private int[] mTargetCell = new int[2]; 115 private int mDragOverX = -1; 116 private int mDragOverY = -1; 117 118 static Rect mLandscapeCellLayoutMetrics = null; 119 static Rect mPortraitCellLayoutMetrics = null; 120 121 /** 122 * The CellLayout that is currently being dragged over 123 */ 124 private CellLayout mDragTargetLayout = null; 125 /** 126 * The CellLayout that we will show as glowing 127 */ 128 private CellLayout mDragOverlappingLayout = null; 129 130 /** 131 * The CellLayout which will be dropped to 132 */ 133 private CellLayout mDropToLayout = null; 134 135 private Launcher mLauncher; 136 private IconCache mIconCache; 137 private DragController mDragController; 138 139 // These are temporary variables to prevent having to allocate a new object just to 140 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 141 private int[] mTempCell = new int[2]; 142 private int[] mTempEstimate = new int[2]; 143 private float[] mDragViewVisualCenter = new float[2]; 144 private float[] mTempDragCoordinates = new float[2]; 145 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 146 private float[] mTempDragBottomRightCoordinates = new float[2]; 147 private Matrix mTempInverseMatrix = new Matrix(); 148 149 private SpringLoadedDragController mSpringLoadedDragController; 150 private float mSpringLoadedShrinkFactor; 151 152 private static final int DEFAULT_CELL_COUNT_X = 4; 153 private static final int DEFAULT_CELL_COUNT_Y = 4; 154 155 // State variable that indicates whether the pages are small (ie when you're 156 // in all apps or customize mode) 157 158 enum State { NORMAL, SPRING_LOADED, SMALL }; 159 private State mState = State.NORMAL; 160 private boolean mIsSwitchingState = false; 161 162 boolean mAnimatingViewIntoPlace = false; 163 boolean mIsDragOccuring = false; 164 boolean mChildrenLayersEnabled = true; 165 166 /** Is the user is dragging an item near the edge of a page? */ 167 private boolean mInScrollArea = false; 168 169 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 170 private Bitmap mDragOutline = null; 171 private final Rect mTempRect = new Rect(); 172 private final int[] mTempXY = new int[2]; 173 private int[] mTempVisiblePagesRange = new int[2]; 174 private float mOverscrollFade = 0; 175 private boolean mOverscrollTransformsSet; 176 public static final int DRAG_BITMAP_PADDING = 2; 177 private boolean mWorkspaceFadeInAdjacentScreens; 178 179 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 180 int mWallpaperWidth; 181 int mWallpaperHeight; 182 WallpaperOffsetInterpolator mWallpaperOffset; 183 boolean mUpdateWallpaperOffsetImmediately = false; 184 private Runnable mDelayedResizeRunnable; 185 private Runnable mDelayedSnapToPageRunnable; 186 private Point mDisplaySize = new Point(); 187 private boolean mIsStaticWallpaper; 188 private int mWallpaperTravelWidth; 189 private int mSpringLoadedPageSpacing; 190 private int mCameraDistance; 191 192 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 193 private static final int FOLDER_CREATION_TIMEOUT = 0; 194 private static final int REORDER_TIMEOUT = 250; 195 private final Alarm mFolderCreationAlarm = new Alarm(); 196 private final Alarm mReorderAlarm = new Alarm(); 197 private FolderRingAnimator mDragFolderRingAnimator = null; 198 private FolderIcon mDragOverFolderIcon = null; 199 private boolean mCreateUserFolderOnDrop = false; 200 private boolean mAddToExistingFolderOnDrop = false; 201 private DropTarget.DragEnforcer mDragEnforcer; 202 private float mMaxDistanceForFolderCreation; 203 204 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 205 private float mXDown; 206 private float mYDown; 207 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 208 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 209 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 210 211 // Relating to the animation of items being dropped externally 212 public static final int ANIMATE_INTO_POSITION_AND_DISAPPEAR = 0; 213 public static final int ANIMATE_INTO_POSITION_AND_REMAIN = 1; 214 public static final int ANIMATE_INTO_POSITION_AND_RESIZE = 2; 215 public static final int COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION = 3; 216 public static final int CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION = 4; 217 218 // Related to dragging, folder creation and reordering 219 private static final int DRAG_MODE_NONE = 0; 220 private static final int DRAG_MODE_CREATE_FOLDER = 1; 221 private static final int DRAG_MODE_ADD_TO_FOLDER = 2; 222 private static final int DRAG_MODE_REORDER = 3; 223 private int mDragMode = DRAG_MODE_NONE; 224 private int mLastReorderX = -1; 225 private int mLastReorderY = -1; 226 227 // These variables are used for storing the initial and final values during workspace animations 228 private int mSavedScrollX; 229 private float mSavedRotationY; 230 private float mSavedTranslationX; 231 private float mCurrentScaleX; 232 private float mCurrentScaleY; 233 private float mCurrentRotationY; 234 private float mCurrentTranslationX; 235 private float mCurrentTranslationY; 236 private float[] mOldTranslationXs; 237 private float[] mOldTranslationYs; 238 private float[] mOldScaleXs; 239 private float[] mOldScaleYs; 240 private float[] mOldBackgroundAlphas; 241 private float[] mOldAlphas; 242 private float[] mNewTranslationXs; 243 private float[] mNewTranslationYs; 244 private float[] mNewScaleXs; 245 private float[] mNewScaleYs; 246 private float[] mNewBackgroundAlphas; 247 private float[] mNewAlphas; 248 private float[] mNewRotationYs; 249 private float mTransitionProgress; 250 251 /** 252 * Used to inflate the Workspace from XML. 253 * 254 * @param context The application's context. 255 * @param attrs The attributes set containing the Workspace's customization values. 256 */ 257 public Workspace(Context context, AttributeSet attrs) { 258 this(context, attrs, 0); 259 } 260 261 /** 262 * Used to inflate the Workspace from XML. 263 * 264 * @param context The application's context. 265 * @param attrs The attributes set containing the Workspace's customization values. 266 * @param defStyle Unused. 267 */ 268 public Workspace(Context context, AttributeSet attrs, int defStyle) { 269 super(context, attrs, defStyle); 270 mContentIsRefreshable = false; 271 272 mDragEnforcer = new DropTarget.DragEnforcer(context); 273 // With workspace, data is available straight from the get-go 274 setDataIsReady(); 275 276 mLauncher = (Launcher) context; 277 final Resources res = getResources(); 278 mWorkspaceFadeInAdjacentScreens = res.getBoolean(R.bool.config_workspaceFadeAdjacentScreens); 279 mFadeInAdjacentScreens = false; 280 mWallpaperManager = WallpaperManager.getInstance(context); 281 282 int cellCountX = DEFAULT_CELL_COUNT_X; 283 int cellCountY = DEFAULT_CELL_COUNT_Y; 284 285 TypedArray a = context.obtainStyledAttributes(attrs, 286 R.styleable.Workspace, defStyle, 0); 287 288 if (LauncherApplication.isScreenLarge()) { 289 // Determine number of rows/columns dynamically 290 // TODO: This code currently fails on tablets with an aspect ratio < 1.3. 291 // Around that ratio we should make cells the same size in portrait and 292 // landscape 293 TypedArray actionBarSizeTypedArray = 294 context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize }); 295 final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); 296 297 Point minDims = new Point(); 298 Point maxDims = new Point(); 299 mLauncher.getWindowManager().getDefaultDisplay().getCurrentSizeRange(minDims, maxDims); 300 301 cellCountX = 1; 302 while (CellLayout.widthInPortrait(res, cellCountX + 1) <= minDims.x) { 303 cellCountX++; 304 } 305 306 cellCountY = 1; 307 while (actionBarHeight + CellLayout.heightInLandscape(res, cellCountY + 1) 308 <= minDims.y) { 309 cellCountY++; 310 } 311 } 312 313 mSpringLoadedShrinkFactor = 314 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 315 mSpringLoadedPageSpacing = 316 res.getDimensionPixelSize(R.dimen.workspace_spring_loaded_page_spacing); 317 mCameraDistance = res.getInteger(R.integer.config_cameraDistance); 318 319 // if the value is manually specified, use that instead 320 cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX); 321 cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY); 322 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 323 a.recycle(); 324 325 setOnHierarchyChangeListener(this); 326 327 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 328 setHapticFeedbackEnabled(false); 329 330 initWorkspace(); 331 332 // Disable multitouch across the workspace/all apps/customize tray 333 setMotionEventSplittingEnabled(true); 334 335 // Unless otherwise specified this view is important for accessibility. 336 if (getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) { 337 setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); 338 } 339 } 340 341 // estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each 342 // dimension if unsuccessful 343 public int[] estimateItemSize(int hSpan, int vSpan, 344 ItemInfo itemInfo, boolean springLoaded) { 345 int[] size = new int[2]; 346 if (getChildCount() > 0) { 347 CellLayout cl = (CellLayout) mLauncher.getWorkspace().getChildAt(0); 348 Rect r = estimateItemPosition(cl, itemInfo, 0, 0, hSpan, vSpan); 349 size[0] = r.width(); 350 size[1] = r.height(); 351 if (springLoaded) { 352 size[0] *= mSpringLoadedShrinkFactor; 353 size[1] *= mSpringLoadedShrinkFactor; 354 } 355 return size; 356 } else { 357 size[0] = Integer.MAX_VALUE; 358 size[1] = Integer.MAX_VALUE; 359 return size; 360 } 361 } 362 public Rect estimateItemPosition(CellLayout cl, ItemInfo pendingInfo, 363 int hCell, int vCell, int hSpan, int vSpan) { 364 Rect r = new Rect(); 365 cl.cellToRect(hCell, vCell, hSpan, vSpan, r); 366 return r; 367 } 368 369 public void onDragStart(DragSource source, Object info, int dragAction) { 370 mIsDragOccuring = true; 371 updateChildrenLayersEnabled(false); 372 mLauncher.lockScreenOrientation(); 373 setChildrenBackgroundAlphaMultipliers(1f); 374 // Prevent any Un/InstallShortcutReceivers from updating the db while we are dragging 375 InstallShortcutReceiver.enableInstallQueue(); 376 UninstallShortcutReceiver.enableUninstallQueue(); 377 } 378 379 public void onDragEnd() { 380 mIsDragOccuring = false; 381 updateChildrenLayersEnabled(false); 382 mLauncher.unlockScreenOrientation(false); 383 384 // Re-enable any Un/InstallShortcutReceiver and now process any queued items 385 InstallShortcutReceiver.disableAndFlushInstallQueue(getContext()); 386 UninstallShortcutReceiver.disableAndFlushUninstallQueue(getContext()); 387 } 388 389 /** 390 * Initializes various states for this workspace. 391 */ 392 protected void initWorkspace() { 393 Context context = getContext(); 394 mCurrentPage = mDefaultPage; 395 Launcher.setScreen(mCurrentPage); 396 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 397 mIconCache = app.getIconCache(); 398 setWillNotDraw(false); 399 setChildrenDrawnWithCacheEnabled(true); 400 401 final Resources res = getResources(); 402 try { 403 mBackground = res.getDrawable(R.drawable.apps_customize_bg); 404 } catch (Resources.NotFoundException e) { 405 // In this case, we will skip drawing background protection 406 } 407 408 mWallpaperOffset = new WallpaperOffsetInterpolator(); 409 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 410 display.getSize(mDisplaySize); 411 mWallpaperTravelWidth = (int) (mDisplaySize.x * 412 wallpaperTravelToScreenWidthRatio(mDisplaySize.x, mDisplaySize.y)); 413 414 mMaxDistanceForFolderCreation = (0.55f * res.getDimensionPixelSize(R.dimen.app_icon_size)); 415 mFlingThresholdVelocity = (int) (FLING_THRESHOLD_VELOCITY * mDensity); 416 } 417 418 @Override 419 protected int getScrollMode() { 420 return SmoothPagedView.X_LARGE_MODE; 421 } 422 423 @Override 424 public void onChildViewAdded(View parent, View child) { 425 if (!(child instanceof CellLayout)) { 426 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 427 } 428 CellLayout cl = ((CellLayout) child); 429 cl.setOnInterceptTouchListener(this); 430 cl.setClickable(true); 431 cl.setContentDescription(getContext().getString( 432 R.string.workspace_description_format, getChildCount())); 433 } 434 435 @Override 436 public void onChildViewRemoved(View parent, View child) { 437 } 438 439 protected boolean shouldDrawChild(View child) { 440 final CellLayout cl = (CellLayout) child; 441 return super.shouldDrawChild(child) && 442 (cl.getShortcutsAndWidgets().getAlpha() > 0 || 443 cl.getBackgroundAlpha() > 0); 444 } 445 446 /** 447 * @return The open folder on the current screen, or null if there is none 448 */ 449 Folder getOpenFolder() { 450 DragLayer dragLayer = mLauncher.getDragLayer(); 451 int count = dragLayer.getChildCount(); 452 for (int i = 0; i < count; i++) { 453 View child = dragLayer.getChildAt(i); 454 if (child instanceof Folder) { 455 Folder folder = (Folder) child; 456 if (folder.getInfo().opened) 457 return folder; 458 } 459 } 460 return null; 461 } 462 463 boolean isTouchActive() { 464 return mTouchState != TOUCH_STATE_REST; 465 } 466 467 /** 468 * Adds the specified child in the specified screen. The position and dimension of 469 * the child are defined by x, y, spanX and spanY. 470 * 471 * @param child The child to add in one of the workspace's screens. 472 * @param screen The screen in which to add the child. 473 * @param x The X position of the child in the screen's grid. 474 * @param y The Y position of the child in the screen's grid. 475 * @param spanX The number of cells spanned horizontally by the child. 476 * @param spanY The number of cells spanned vertically by the child. 477 */ 478 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY) { 479 addInScreen(child, container, screen, x, y, spanX, spanY, false); 480 } 481 482 /** 483 * Adds the specified child in the specified screen. The position and dimension of 484 * the child are defined by x, y, spanX and spanY. 485 * 486 * @param child The child to add in one of the workspace's screens. 487 * @param screen The screen in which to add the child. 488 * @param x The X position of the child in the screen's grid. 489 * @param y The Y position of the child in the screen's grid. 490 * @param spanX The number of cells spanned horizontally by the child. 491 * @param spanY The number of cells spanned vertically by the child. 492 * @param insert When true, the child is inserted at the beginning of the children list. 493 */ 494 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY, 495 boolean insert) { 496 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 497 if (screen < 0 || screen >= getChildCount()) { 498 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 499 + " (was " + screen + "); skipping child"); 500 return; 501 } 502 } 503 504 final CellLayout layout; 505 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 506 layout = mLauncher.getHotseat().getLayout(); 507 child.setOnKeyListener(null); 508 509 // Hide folder title in the hotseat 510 if (child instanceof FolderIcon) { 511 ((FolderIcon) child).setTextVisible(false); 512 } 513 514 if (screen < 0) { 515 screen = mLauncher.getHotseat().getOrderInHotseat(x, y); 516 } else { 517 // Note: We do this to ensure that the hotseat is always laid out in the orientation 518 // of the hotseat in order regardless of which orientation they were added 519 x = mLauncher.getHotseat().getCellXFromOrder(screen); 520 y = mLauncher.getHotseat().getCellYFromOrder(screen); 521 } 522 } else { 523 // Show folder title if not in the hotseat 524 if (child instanceof FolderIcon) { 525 ((FolderIcon) child).setTextVisible(true); 526 } 527 528 layout = (CellLayout) getChildAt(screen); 529 child.setOnKeyListener(new IconKeyEventListener()); 530 } 531 532 LayoutParams genericLp = child.getLayoutParams(); 533 CellLayout.LayoutParams lp; 534 if (genericLp == null || !(genericLp instanceof CellLayout.LayoutParams)) { 535 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 536 } else { 537 lp = (CellLayout.LayoutParams) genericLp; 538 lp.cellX = x; 539 lp.cellY = y; 540 lp.cellHSpan = spanX; 541 lp.cellVSpan = spanY; 542 } 543 544 if (spanX < 0 && spanY < 0) { 545 lp.isLockedToGrid = false; 546 } 547 548 // Get the canonical child id to uniquely represent this view in this screen 549 int childId = LauncherModel.getCellLayoutChildId(container, screen, x, y, spanX, spanY); 550 boolean markCellsAsOccupied = !(child instanceof Folder); 551 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 552 // TODO: This branch occurs when the workspace is adding views 553 // outside of the defined grid 554 // maybe we should be deleting these items from the LauncherModel? 555 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 556 } 557 558 if (!(child instanceof Folder)) { 559 child.setHapticFeedbackEnabled(false); 560 child.setOnLongClickListener(mLongClickListener); 561 } 562 if (child instanceof DropTarget) { 563 mDragController.addDropTarget((DropTarget) child); 564 } 565 } 566 567 /** 568 * Check if the point (x, y) hits a given page. 569 */ 570 private boolean hitsPage(int index, float x, float y) { 571 final View page = getChildAt(index); 572 if (page != null) { 573 float[] localXY = { x, y }; 574 mapPointFromSelfToChild(page, localXY); 575 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 576 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 577 } 578 return false; 579 } 580 581 @Override 582 protected boolean hitsPreviousPage(float x, float y) { 583 // mNextPage is set to INVALID_PAGE whenever we are stationary. 584 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 585 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 586 587 // Only allow tap to next page on large devices, where there's significant margin outside 588 // the active workspace 589 return LauncherApplication.isScreenLarge() && hitsPage(current - 1, x, y); 590 } 591 592 @Override 593 protected boolean hitsNextPage(float x, float y) { 594 // mNextPage is set to INVALID_PAGE whenever we are stationary. 595 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 596 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 597 598 // Only allow tap to next page on large devices, where there's significant margin outside 599 // the active workspace 600 return LauncherApplication.isScreenLarge() && hitsPage(current + 1, x, y); 601 } 602 603 /** 604 * Called directly from a CellLayout (not by the framework), after we've been added as a 605 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 606 * that it should intercept touch events, which is not something that is normally supported. 607 */ 608 @Override 609 public boolean onTouch(View v, MotionEvent event) { 610 return (isSmall() || !isFinishedSwitchingState()); 611 } 612 613 public boolean isSwitchingState() { 614 return mIsSwitchingState; 615 } 616 617 /** This differs from isSwitchingState in that we take into account how far the transition 618 * has completed. */ 619 public boolean isFinishedSwitchingState() { 620 return !mIsSwitchingState || (mTransitionProgress > 0.5f); 621 } 622 623 protected void onWindowVisibilityChanged (int visibility) { 624 mLauncher.onWindowVisibilityChanged(visibility); 625 } 626 627 @Override 628 public boolean dispatchUnhandledMove(View focused, int direction) { 629 if (isSmall() || !isFinishedSwitchingState()) { 630 // when the home screens are shrunken, shouldn't allow side-scrolling 631 return false; 632 } 633 return super.dispatchUnhandledMove(focused, direction); 634 } 635 636 @Override 637 public boolean onInterceptTouchEvent(MotionEvent ev) { 638 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 639 case MotionEvent.ACTION_DOWN: 640 mXDown = ev.getX(); 641 mYDown = ev.getY(); 642 break; 643 case MotionEvent.ACTION_POINTER_UP: 644 case MotionEvent.ACTION_UP: 645 if (mTouchState == TOUCH_STATE_REST) { 646 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 647 if (!currentPage.lastDownOnOccupiedCell()) { 648 onWallpaperTap(ev); 649 } 650 } 651 } 652 return super.onInterceptTouchEvent(ev); 653 } 654 655 protected void reinflateWidgetsIfNecessary() { 656 final int clCount = getChildCount(); 657 for (int i = 0; i < clCount; i++) { 658 CellLayout cl = (CellLayout) getChildAt(i); 659 ShortcutAndWidgetContainer swc = cl.getShortcutsAndWidgets(); 660 final int itemCount = swc.getChildCount(); 661 for (int j = 0; j < itemCount; j++) { 662 View v = swc.getChildAt(j); 663 664 if (v.getTag() instanceof LauncherAppWidgetInfo) { 665 LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) v.getTag(); 666 LauncherAppWidgetHostView lahv = (LauncherAppWidgetHostView) info.hostView; 667 if (lahv != null && lahv.orientationChangedSincedInflation()) { 668 mLauncher.removeAppWidget(info); 669 // Remove the current widget which is inflated with the wrong orientation 670 cl.removeView(lahv); 671 mLauncher.bindAppWidget(info); 672 } 673 } 674 } 675 } 676 } 677 678 @Override 679 protected void determineScrollingStart(MotionEvent ev) { 680 if (isSmall()) return; 681 if (!isFinishedSwitchingState()) return; 682 683 float deltaX = Math.abs(ev.getX() - mXDown); 684 float deltaY = Math.abs(ev.getY() - mYDown); 685 686 if (Float.compare(deltaX, 0f) == 0) return; 687 688 float slope = deltaY / deltaX; 689 float theta = (float) Math.atan(slope); 690 691 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 692 cancelCurrentPageLongPress(); 693 } 694 695 if (theta > MAX_SWIPE_ANGLE) { 696 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 697 return; 698 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 699 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 700 // increase the touch slop to make it harder to begin scrolling the workspace. This 701 // results in vertically scrolling widgets to more easily. The higher the angle, the 702 // more we increase touch slop. 703 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 704 float extraRatio = (float) 705 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 706 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 707 } else { 708 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 709 super.determineScrollingStart(ev); 710 } 711 } 712 713 @Override 714 protected boolean isScrollingIndicatorEnabled() { 715 return super.isScrollingIndicatorEnabled() && (mState != State.SPRING_LOADED); 716 } 717 718 protected void onPageBeginMoving() { 719 super.onPageBeginMoving(); 720 721 if (isHardwareAccelerated()) { 722 updateChildrenLayersEnabled(false); 723 } else { 724 if (mNextPage != INVALID_PAGE) { 725 // we're snapping to a particular screen 726 enableChildrenCache(mCurrentPage, mNextPage); 727 } else { 728 // this is when user is actively dragging a particular screen, they might 729 // swipe it either left or right (but we won't advance by more than one screen) 730 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 731 } 732 } 733 734 // Only show page outlines as we pan if we are on large screen 735 if (LauncherApplication.isScreenLarge()) { 736 showOutlines(); 737 mIsStaticWallpaper = mWallpaperManager.getWallpaperInfo() == null; 738 } 739 740 // If we are not fading in adjacent screens, we still need to restore the alpha in case the 741 // user scrolls while we are transitioning (should not affect dispatchDraw optimizations) 742 if (!mWorkspaceFadeInAdjacentScreens) { 743 for (int i = 0; i < getChildCount(); ++i) { 744 ((CellLayout) getPageAt(i)).setShortcutAndWidgetAlpha(1f); 745 } 746 } 747 748 // Show the scroll indicator as you pan the page 749 showScrollingIndicator(false); 750 } 751 752 protected void onPageEndMoving() { 753 super.onPageEndMoving(); 754 755 if (isHardwareAccelerated()) { 756 updateChildrenLayersEnabled(false); 757 } else { 758 clearChildrenCache(); 759 } 760 761 762 if (mDragController.isDragging()) { 763 if (isSmall()) { 764 // If we are in springloaded mode, then force an event to check if the current touch 765 // is under a new page (to scroll to) 766 mDragController.forceMoveEvent(); 767 } 768 } else { 769 // If we are not mid-dragging, hide the page outlines if we are on a large screen 770 if (LauncherApplication.isScreenLarge()) { 771 hideOutlines(); 772 } 773 774 // Hide the scroll indicator as you pan the page 775 if (!mDragController.isDragging()) { 776 hideScrollingIndicator(false); 777 } 778 } 779 mOverScrollMaxBackgroundAlpha = 0.0f; 780 781 if (mDelayedResizeRunnable != null) { 782 mDelayedResizeRunnable.run(); 783 mDelayedResizeRunnable = null; 784 } 785 786 if (mDelayedSnapToPageRunnable != null) { 787 mDelayedSnapToPageRunnable.run(); 788 mDelayedSnapToPageRunnable = null; 789 } 790 } 791 792 @Override 793 protected void notifyPageSwitchListener() { 794 super.notifyPageSwitchListener(); 795 Launcher.setScreen(mCurrentPage); 796 }; 797 798 // As a ratio of screen height, the total distance we want the parallax effect to span 799 // horizontally 800 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 801 float aspectRatio = width / (float) height; 802 803 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 804 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 805 // We will use these two data points to extrapolate how much the wallpaper parallax effect 806 // to span (ie travel) at any aspect ratio: 807 808 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 809 final float ASPECT_RATIO_PORTRAIT = 10/16f; 810 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 811 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 812 813 // To find out the desired width at different aspect ratios, we use the following two 814 // formulas, where the coefficient on x is the aspect ratio (width/height): 815 // (16/10)x + y = 1.5 816 // (10/16)x + y = 1.2 817 // We solve for x and y and end up with a final formula: 818 final float x = 819 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 820 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 821 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 822 return x * aspectRatio + y; 823 } 824 825 // The range of scroll values for Workspace 826 private int getScrollRange() { 827 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 828 } 829 830 protected void setWallpaperDimension() { 831 Point minDims = new Point(); 832 Point maxDims = new Point(); 833 mLauncher.getWindowManager().getDefaultDisplay().getCurrentSizeRange(minDims, maxDims); 834 835 final int maxDim = Math.max(maxDims.x, maxDims.y); 836 final int minDim = Math.min(minDims.x, minDims.y); 837 838 // We need to ensure that there is enough extra space in the wallpaper for the intended 839 // parallax effects 840 if (LauncherApplication.isScreenLarge()) { 841 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 842 mWallpaperHeight = maxDim; 843 } else { 844 mWallpaperWidth = Math.max((int) (minDim * WALLPAPER_SCREENS_SPAN), maxDim); 845 mWallpaperHeight = maxDim; 846 } 847 new Thread("setWallpaperDimension") { 848 public void run() { 849 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 850 } 851 }.start(); 852 } 853 854 private float wallpaperOffsetForCurrentScroll() { 855 // Set wallpaper offset steps (1 / (number of screens - 1)) 856 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f); 857 858 // For the purposes of computing the scrollRange and overScrollOffset, we assume 859 // that mLayoutScale is 1. This means that when we're in spring-loaded mode, 860 // there's no discrepancy between the wallpaper offset for a given page. 861 float layoutScale = mLayoutScale; 862 mLayoutScale = 1f; 863 int scrollRange = getScrollRange(); 864 865 // Again, we adjust the wallpaper offset to be consistent between values of mLayoutScale 866 float adjustedScrollX = Math.max(0, Math.min(getScrollX(), mMaxScrollX)); 867 adjustedScrollX *= mWallpaperScrollRatio; 868 mLayoutScale = layoutScale; 869 870 float scrollProgress = 871 adjustedScrollX / (float) scrollRange; 872 873 if (LauncherApplication.isScreenLarge() && mIsStaticWallpaper) { 874 // The wallpaper travel width is how far, from left to right, the wallpaper will move 875 // at this orientation. On tablets in portrait mode we don't move all the way to the 876 // edges of the wallpaper, or otherwise the parallax effect would be too strong. 877 int wallpaperTravelWidth = Math.min(mWallpaperTravelWidth, mWallpaperWidth); 878 879 float offsetInDips = wallpaperTravelWidth * scrollProgress + 880 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 881 float offset = offsetInDips / (float) mWallpaperWidth; 882 return offset; 883 } else { 884 return scrollProgress; 885 } 886 } 887 888 private void syncWallpaperOffsetWithScroll() { 889 final boolean enableWallpaperEffects = isHardwareAccelerated(); 890 if (enableWallpaperEffects) { 891 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 892 } 893 } 894 895 public void updateWallpaperOffsetImmediately() { 896 mUpdateWallpaperOffsetImmediately = true; 897 } 898 899 private void updateWallpaperOffsets() { 900 boolean updateNow = false; 901 boolean keepUpdating = true; 902 if (mUpdateWallpaperOffsetImmediately) { 903 updateNow = true; 904 keepUpdating = false; 905 mWallpaperOffset.jumpToFinal(); 906 mUpdateWallpaperOffsetImmediately = false; 907 } else { 908 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 909 } 910 if (updateNow) { 911 if (mWindowToken != null) { 912 mWallpaperManager.setWallpaperOffsets(mWindowToken, 913 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 914 } 915 } 916 if (keepUpdating) { 917 invalidate(); 918 } 919 } 920 921 @Override 922 protected void updateCurrentPageScroll() { 923 super.updateCurrentPageScroll(); 924 computeWallpaperScrollRatio(mCurrentPage); 925 } 926 927 @Override 928 protected void snapToPage(int whichPage) { 929 super.snapToPage(whichPage); 930 computeWallpaperScrollRatio(whichPage); 931 } 932 933 @Override 934 protected void snapToPage(int whichPage, int duration) { 935 super.snapToPage(whichPage, duration); 936 computeWallpaperScrollRatio(whichPage); 937 } 938 939 protected void snapToPage(int whichPage, Runnable r) { 940 if (mDelayedSnapToPageRunnable != null) { 941 mDelayedSnapToPageRunnable.run(); 942 } 943 mDelayedSnapToPageRunnable = r; 944 snapToPage(whichPage, SLOW_PAGE_SNAP_ANIMATION_DURATION); 945 } 946 947 private void computeWallpaperScrollRatio(int page) { 948 // Here, we determine what the desired scroll would be with and without a layout scale, 949 // and compute a ratio between the two. This allows us to adjust the wallpaper offset 950 // as though there is no layout scale. 951 float layoutScale = mLayoutScale; 952 int scaled = getChildOffset(page) - getRelativeChildOffset(page); 953 mLayoutScale = 1.0f; 954 float unscaled = getChildOffset(page) - getRelativeChildOffset(page); 955 mLayoutScale = layoutScale; 956 if (scaled > 0) { 957 mWallpaperScrollRatio = (1.0f * unscaled) / scaled; 958 } else { 959 mWallpaperScrollRatio = 1f; 960 } 961 } 962 963 class WallpaperOffsetInterpolator { 964 float mFinalHorizontalWallpaperOffset = 0.0f; 965 float mFinalVerticalWallpaperOffset = 0.5f; 966 float mHorizontalWallpaperOffset = 0.0f; 967 float mVerticalWallpaperOffset = 0.5f; 968 long mLastWallpaperOffsetUpdateTime; 969 boolean mIsMovingFast; 970 boolean mOverrideHorizontalCatchupConstant; 971 float mHorizontalCatchupConstant = 0.35f; 972 float mVerticalCatchupConstant = 0.35f; 973 974 public WallpaperOffsetInterpolator() { 975 } 976 977 public void setOverrideHorizontalCatchupConstant(boolean override) { 978 mOverrideHorizontalCatchupConstant = override; 979 } 980 981 public void setHorizontalCatchupConstant(float f) { 982 mHorizontalCatchupConstant = f; 983 } 984 985 public void setVerticalCatchupConstant(float f) { 986 mVerticalCatchupConstant = f; 987 } 988 989 public boolean computeScrollOffset() { 990 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 991 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 992 mIsMovingFast = false; 993 return false; 994 } 995 boolean isLandscape = mDisplaySize.x > mDisplaySize.y; 996 997 long currentTime = System.currentTimeMillis(); 998 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 999 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 1000 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 1001 1002 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 1003 if (!mIsMovingFast && xdiff > 0.07) { 1004 mIsMovingFast = true; 1005 } 1006 1007 float fractionToCatchUpIn1MsHorizontal; 1008 if (mOverrideHorizontalCatchupConstant) { 1009 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 1010 } else if (mIsMovingFast) { 1011 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 1012 } else { 1013 // slow 1014 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 1015 } 1016 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 1017 1018 fractionToCatchUpIn1MsHorizontal /= 33f; 1019 fractionToCatchUpIn1MsVertical /= 33f; 1020 1021 final float UPDATE_THRESHOLD = 0.00001f; 1022 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 1023 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 1024 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 1025 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 1026 1027 // Don't have any lag between workspace and wallpaper on non-large devices 1028 if (!LauncherApplication.isScreenLarge() || jumpToFinalValue) { 1029 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 1030 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 1031 } else { 1032 float percentToCatchUpVertical = 1033 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 1034 float percentToCatchUpHorizontal = 1035 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 1036 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 1037 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 1038 } 1039 1040 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 1041 return true; 1042 } 1043 1044 public float getCurrX() { 1045 return mHorizontalWallpaperOffset; 1046 } 1047 1048 public float getFinalX() { 1049 return mFinalHorizontalWallpaperOffset; 1050 } 1051 1052 public float getCurrY() { 1053 return mVerticalWallpaperOffset; 1054 } 1055 1056 public float getFinalY() { 1057 return mFinalVerticalWallpaperOffset; 1058 } 1059 1060 public void setFinalX(float x) { 1061 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 1062 } 1063 1064 public void setFinalY(float y) { 1065 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 1066 } 1067 1068 public void jumpToFinal() { 1069 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 1070 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 1071 } 1072 } 1073 1074 @Override 1075 public void computeScroll() { 1076 super.computeScroll(); 1077 syncWallpaperOffsetWithScroll(); 1078 } 1079 1080 void showOutlines() { 1081 if (!isSmall() && !mIsSwitchingState) { 1082 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1083 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1084 mChildrenOutlineFadeInAnimation = LauncherAnimUtils.ofFloat(this, "childrenOutlineAlpha", 1.0f); 1085 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 1086 mChildrenOutlineFadeInAnimation.start(); 1087 } 1088 } 1089 1090 void hideOutlines() { 1091 if (!isSmall() && !mIsSwitchingState) { 1092 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1093 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1094 mChildrenOutlineFadeOutAnimation = LauncherAnimUtils.ofFloat(this, "childrenOutlineAlpha", 0.0f); 1095 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 1096 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 1097 mChildrenOutlineFadeOutAnimation.start(); 1098 } 1099 } 1100 1101 public void showOutlinesTemporarily() { 1102 if (!mIsPageMoving && !isTouchActive()) { 1103 snapToPage(mCurrentPage); 1104 } 1105 } 1106 1107 public void setChildrenOutlineAlpha(float alpha) { 1108 mChildrenOutlineAlpha = alpha; 1109 for (int i = 0; i < getChildCount(); i++) { 1110 CellLayout cl = (CellLayout) getChildAt(i); 1111 cl.setBackgroundAlpha(alpha); 1112 } 1113 } 1114 1115 public float getChildrenOutlineAlpha() { 1116 return mChildrenOutlineAlpha; 1117 } 1118 1119 void disableBackground() { 1120 mDrawBackground = false; 1121 } 1122 void enableBackground() { 1123 mDrawBackground = true; 1124 } 1125 1126 private void animateBackgroundGradient(float finalAlpha, boolean animated) { 1127 if (mBackground == null) return; 1128 if (mBackgroundFadeInAnimation != null) { 1129 mBackgroundFadeInAnimation.cancel(); 1130 mBackgroundFadeInAnimation = null; 1131 } 1132 if (mBackgroundFadeOutAnimation != null) { 1133 mBackgroundFadeOutAnimation.cancel(); 1134 mBackgroundFadeOutAnimation = null; 1135 } 1136 float startAlpha = getBackgroundAlpha(); 1137 if (finalAlpha != startAlpha) { 1138 if (animated) { 1139 mBackgroundFadeOutAnimation = LauncherAnimUtils.ofFloat(startAlpha, finalAlpha); 1140 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1141 public void onAnimationUpdate(ValueAnimator animation) { 1142 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1143 } 1144 }); 1145 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1146 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1147 mBackgroundFadeOutAnimation.start(); 1148 } else { 1149 setBackgroundAlpha(finalAlpha); 1150 } 1151 } 1152 } 1153 1154 public void setBackgroundAlpha(float alpha) { 1155 if (alpha != mBackgroundAlpha) { 1156 mBackgroundAlpha = alpha; 1157 invalidate(); 1158 } 1159 } 1160 1161 public float getBackgroundAlpha() { 1162 return mBackgroundAlpha; 1163 } 1164 1165 float backgroundAlphaInterpolator(float r) { 1166 float pivotA = 0.1f; 1167 float pivotB = 0.4f; 1168 if (r < pivotA) { 1169 return 0; 1170 } else if (r > pivotB) { 1171 return 1.0f; 1172 } else { 1173 return (r - pivotA)/(pivotB - pivotA); 1174 } 1175 } 1176 1177 float overScrollBackgroundAlphaInterpolator(float r) { 1178 float threshold = 0.08f; 1179 1180 if (r > mOverScrollMaxBackgroundAlpha) { 1181 mOverScrollMaxBackgroundAlpha = r; 1182 } else if (r < mOverScrollMaxBackgroundAlpha) { 1183 r = mOverScrollMaxBackgroundAlpha; 1184 } 1185 1186 return Math.min(r / threshold, 1.0f); 1187 } 1188 1189 private void updatePageAlphaValues(int screenCenter) { 1190 boolean isInOverscroll = mOverScrollX < 0 || mOverScrollX > mMaxScrollX; 1191 if (mWorkspaceFadeInAdjacentScreens && 1192 mState == State.NORMAL && 1193 !mIsSwitchingState && 1194 !isInOverscroll) { 1195 for (int i = 0; i < getChildCount(); i++) { 1196 CellLayout child = (CellLayout) getChildAt(i); 1197 if (child != null) { 1198 float scrollProgress = getScrollProgress(screenCenter, child, i); 1199 float alpha = 1 - Math.abs(scrollProgress); 1200 child.getShortcutsAndWidgets().setAlpha(alpha); 1201 if (!mIsDragOccuring) { 1202 child.setBackgroundAlphaMultiplier( 1203 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1204 } else { 1205 child.setBackgroundAlphaMultiplier(1f); 1206 } 1207 } 1208 } 1209 } 1210 } 1211 1212 private void setChildrenBackgroundAlphaMultipliers(float a) { 1213 for (int i = 0; i < getChildCount(); i++) { 1214 CellLayout child = (CellLayout) getChildAt(i); 1215 child.setBackgroundAlphaMultiplier(a); 1216 } 1217 } 1218 1219 @Override 1220 protected void screenScrolled(int screenCenter) { 1221 super.screenScrolled(screenCenter); 1222 1223 updatePageAlphaValues(screenCenter); 1224 enableHwLayersOnVisiblePages(); 1225 1226 if (mOverScrollX < 0 || mOverScrollX > mMaxScrollX) { 1227 int index = mOverScrollX < 0 ? 0 : getChildCount() - 1; 1228 CellLayout cl = (CellLayout) getChildAt(index); 1229 float scrollProgress = getScrollProgress(screenCenter, cl, index); 1230 cl.setOverScrollAmount(Math.abs(scrollProgress), index == 0); 1231 float rotation = - WORKSPACE_OVERSCROLL_ROTATION * scrollProgress; 1232 cl.setRotationY(rotation); 1233 setFadeForOverScroll(Math.abs(scrollProgress)); 1234 if (!mOverscrollTransformsSet) { 1235 mOverscrollTransformsSet = true; 1236 cl.setCameraDistance(mDensity * mCameraDistance); 1237 cl.setPivotX(cl.getMeasuredWidth() * (index == 0 ? 0.75f : 0.25f)); 1238 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1239 cl.setOverscrollTransformsDirty(true); 1240 } 1241 } else { 1242 if (mOverscrollFade != 0) { 1243 setFadeForOverScroll(0); 1244 } 1245 if (mOverscrollTransformsSet) { 1246 mOverscrollTransformsSet = false; 1247 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1248 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1249 } 1250 } 1251 } 1252 1253 @Override 1254 protected void overScroll(float amount) { 1255 acceleratedOverScroll(amount); 1256 } 1257 1258 protected void onAttachedToWindow() { 1259 super.onAttachedToWindow(); 1260 mWindowToken = getWindowToken(); 1261 computeScroll(); 1262 mDragController.setWindowToken(mWindowToken); 1263 } 1264 1265 protected void onDetachedFromWindow() { 1266 mWindowToken = null; 1267 } 1268 1269 @Override 1270 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1271 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1272 mUpdateWallpaperOffsetImmediately = true; 1273 } 1274 super.onLayout(changed, left, top, right, bottom); 1275 } 1276 1277 @Override 1278 protected void onDraw(Canvas canvas) { 1279 updateWallpaperOffsets(); 1280 1281 // Draw the background gradient if necessary 1282 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1283 int alpha = (int) (mBackgroundAlpha * 255); 1284 mBackground.setAlpha(alpha); 1285 mBackground.setBounds(getScrollX(), 0, getScrollX() + getMeasuredWidth(), 1286 getMeasuredHeight()); 1287 mBackground.draw(canvas); 1288 } 1289 1290 super.onDraw(canvas); 1291 } 1292 1293 boolean isDrawingBackgroundGradient() { 1294 return (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground); 1295 } 1296 1297 @Override 1298 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1299 if (!mLauncher.isAllAppsVisible()) { 1300 final Folder openFolder = getOpenFolder(); 1301 if (openFolder != null) { 1302 return openFolder.requestFocus(direction, previouslyFocusedRect); 1303 } else { 1304 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1305 } 1306 } 1307 return false; 1308 } 1309 1310 @Override 1311 public int getDescendantFocusability() { 1312 if (isSmall()) { 1313 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1314 } 1315 return super.getDescendantFocusability(); 1316 } 1317 1318 @Override 1319 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1320 if (!mLauncher.isAllAppsVisible()) { 1321 final Folder openFolder = getOpenFolder(); 1322 if (openFolder != null) { 1323 openFolder.addFocusables(views, direction); 1324 } else { 1325 super.addFocusables(views, direction, focusableMode); 1326 } 1327 } 1328 } 1329 1330 public boolean isSmall() { 1331 return mState == State.SMALL || mState == State.SPRING_LOADED; 1332 } 1333 1334 void enableChildrenCache(int fromPage, int toPage) { 1335 if (fromPage > toPage) { 1336 final int temp = fromPage; 1337 fromPage = toPage; 1338 toPage = temp; 1339 } 1340 1341 final int screenCount = getChildCount(); 1342 1343 fromPage = Math.max(fromPage, 0); 1344 toPage = Math.min(toPage, screenCount - 1); 1345 1346 for (int i = fromPage; i <= toPage; i++) { 1347 final CellLayout layout = (CellLayout) getChildAt(i); 1348 layout.setChildrenDrawnWithCacheEnabled(true); 1349 layout.setChildrenDrawingCacheEnabled(true); 1350 } 1351 } 1352 1353 void clearChildrenCache() { 1354 final int screenCount = getChildCount(); 1355 for (int i = 0; i < screenCount; i++) { 1356 final CellLayout layout = (CellLayout) getChildAt(i); 1357 layout.setChildrenDrawnWithCacheEnabled(false); 1358 // In software mode, we don't want the items to continue to be drawn into bitmaps 1359 if (!isHardwareAccelerated()) { 1360 layout.setChildrenDrawingCacheEnabled(false); 1361 } 1362 } 1363 } 1364 1365 1366 private void updateChildrenLayersEnabled(boolean force) { 1367 boolean small = mState == State.SMALL || mIsSwitchingState; 1368 boolean enableChildrenLayers = force || small || mAnimatingViewIntoPlace || isPageMoving(); 1369 1370 if (enableChildrenLayers != mChildrenLayersEnabled) { 1371 mChildrenLayersEnabled = enableChildrenLayers; 1372 if (mChildrenLayersEnabled) { 1373 enableHwLayersOnVisiblePages(); 1374 } else { 1375 for (int i = 0; i < getPageCount(); i++) { 1376 final CellLayout cl = (CellLayout) getChildAt(i); 1377 cl.disableHardwareLayers(); 1378 } 1379 } 1380 } 1381 } 1382 1383 private void enableHwLayersOnVisiblePages() { 1384 if (mChildrenLayersEnabled) { 1385 final int screenCount = getChildCount(); 1386 getVisiblePages(mTempVisiblePagesRange); 1387 int leftScreen = mTempVisiblePagesRange[0]; 1388 int rightScreen = mTempVisiblePagesRange[1]; 1389 if (leftScreen == rightScreen) { 1390 // make sure we're caching at least two pages always 1391 if (rightScreen < screenCount - 1) { 1392 rightScreen++; 1393 } else if (leftScreen > 0) { 1394 leftScreen--; 1395 } 1396 } 1397 for (int i = 0; i < screenCount; i++) { 1398 final CellLayout layout = (CellLayout) getChildAt(i); 1399 if (!(leftScreen <= i && i <= rightScreen && shouldDrawChild(layout))) { 1400 layout.disableHardwareLayers(); 1401 } 1402 } 1403 for (int i = 0; i < screenCount; i++) { 1404 final CellLayout layout = (CellLayout) getChildAt(i); 1405 if (leftScreen <= i && i <= rightScreen && shouldDrawChild(layout)) { 1406 layout.enableHardwareLayers(); 1407 } 1408 } 1409 } 1410 } 1411 1412 public void buildPageHardwareLayers() { 1413 // force layers to be enabled just for the call to buildLayer 1414 updateChildrenLayersEnabled(true); 1415 if (getWindowToken() != null) { 1416 final int childCount = getChildCount(); 1417 for (int i = 0; i < childCount; i++) { 1418 CellLayout cl = (CellLayout) getChildAt(i); 1419 cl.buildHardwareLayer(); 1420 } 1421 } 1422 updateChildrenLayersEnabled(false); 1423 } 1424 1425 protected void onWallpaperTap(MotionEvent ev) { 1426 final int[] position = mTempCell; 1427 getLocationOnScreen(position); 1428 1429 int pointerIndex = ev.getActionIndex(); 1430 position[0] += (int) ev.getX(pointerIndex); 1431 position[1] += (int) ev.getY(pointerIndex); 1432 1433 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1434 ev.getAction() == MotionEvent.ACTION_UP 1435 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1436 position[0], position[1], 0, null); 1437 } 1438 1439 /* 1440 * This interpolator emulates the rate at which the perceived scale of an object changes 1441 * as its distance from a camera increases. When this interpolator is applied to a scale 1442 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1443 * from the camera. 1444 */ 1445 static class ZInterpolator implements TimeInterpolator { 1446 private float focalLength; 1447 1448 public ZInterpolator(float foc) { 1449 focalLength = foc; 1450 } 1451 1452 public float getInterpolation(float input) { 1453 return (1.0f - focalLength / (focalLength + input)) / 1454 (1.0f - focalLength / (focalLength + 1.0f)); 1455 } 1456 } 1457 1458 /* 1459 * The exact reverse of ZInterpolator. 1460 */ 1461 static class InverseZInterpolator implements TimeInterpolator { 1462 private ZInterpolator zInterpolator; 1463 public InverseZInterpolator(float foc) { 1464 zInterpolator = new ZInterpolator(foc); 1465 } 1466 public float getInterpolation(float input) { 1467 return 1 - zInterpolator.getInterpolation(1 - input); 1468 } 1469 } 1470 1471 /* 1472 * ZInterpolator compounded with an ease-out. 1473 */ 1474 static class ZoomOutInterpolator implements TimeInterpolator { 1475 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(0.75f); 1476 private final ZInterpolator zInterpolator = new ZInterpolator(0.13f); 1477 1478 public float getInterpolation(float input) { 1479 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1480 } 1481 } 1482 1483 /* 1484 * InvereZInterpolator compounded with an ease-out. 1485 */ 1486 static class ZoomInInterpolator implements TimeInterpolator { 1487 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1488 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1489 1490 public float getInterpolation(float input) { 1491 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1492 } 1493 } 1494 1495 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1496 1497 /* 1498 * 1499 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1500 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1501 * 1502 * These methods mark the appropriate pages as accepting drops (which alters their visual 1503 * appearance). 1504 * 1505 */ 1506 public void onDragStartedWithItem(View v) { 1507 final Canvas canvas = new Canvas(); 1508 1509 // The outline is used to visualize where the item will land if dropped 1510 mDragOutline = createDragOutline(v, canvas, DRAG_BITMAP_PADDING); 1511 } 1512 1513 public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, boolean clipAlpha) { 1514 final Canvas canvas = new Canvas(); 1515 1516 int[] size = estimateItemSize(info.spanX, info.spanY, info, false); 1517 1518 // The outline is used to visualize where the item will land if dropped 1519 mDragOutline = createDragOutline(b, canvas, DRAG_BITMAP_PADDING, size[0], 1520 size[1], clipAlpha); 1521 } 1522 1523 public void exitWidgetResizeMode() { 1524 DragLayer dragLayer = mLauncher.getDragLayer(); 1525 dragLayer.clearAllResizeFrames(); 1526 } 1527 1528 private void initAnimationArrays() { 1529 final int childCount = getChildCount(); 1530 if (mOldTranslationXs != null) return; 1531 mOldTranslationXs = new float[childCount]; 1532 mOldTranslationYs = new float[childCount]; 1533 mOldScaleXs = new float[childCount]; 1534 mOldScaleYs = new float[childCount]; 1535 mOldBackgroundAlphas = new float[childCount]; 1536 mOldAlphas = new float[childCount]; 1537 mNewTranslationXs = new float[childCount]; 1538 mNewTranslationYs = new float[childCount]; 1539 mNewScaleXs = new float[childCount]; 1540 mNewScaleYs = new float[childCount]; 1541 mNewBackgroundAlphas = new float[childCount]; 1542 mNewAlphas = new float[childCount]; 1543 mNewRotationYs = new float[childCount]; 1544 } 1545 1546 Animator getChangeStateAnimation(final State state, boolean animated) { 1547 return getChangeStateAnimation(state, animated, 0); 1548 } 1549 1550 Animator getChangeStateAnimation(final State state, boolean animated, int delay) { 1551 if (mState == state) { 1552 return null; 1553 } 1554 1555 // Initialize animation arrays for the first time if necessary 1556 initAnimationArrays(); 1557 1558 AnimatorSet anim = animated ? LauncherAnimUtils.createAnimatorSet() : null; 1559 1560 // Stop any scrolling, move to the current page right away 1561 setCurrentPage(getNextPage()); 1562 1563 final State oldState = mState; 1564 final boolean oldStateIsNormal = (oldState == State.NORMAL); 1565 final boolean oldStateIsSpringLoaded = (oldState == State.SPRING_LOADED); 1566 final boolean oldStateIsSmall = (oldState == State.SMALL); 1567 mState = state; 1568 final boolean stateIsNormal = (state == State.NORMAL); 1569 final boolean stateIsSpringLoaded = (state == State.SPRING_LOADED); 1570 final boolean stateIsSmall = (state == State.SMALL); 1571 float finalScaleFactor = 1.0f; 1572 float finalBackgroundAlpha = stateIsSpringLoaded ? 1.0f : 0f; 1573 float translationX = 0; 1574 float translationY = 0; 1575 boolean zoomIn = true; 1576 1577 if (state != State.NORMAL) { 1578 finalScaleFactor = mSpringLoadedShrinkFactor - (stateIsSmall ? 0.1f : 0); 1579 setPageSpacing(mSpringLoadedPageSpacing); 1580 if (oldStateIsNormal && stateIsSmall) { 1581 zoomIn = false; 1582 setLayoutScale(finalScaleFactor); 1583 updateChildrenLayersEnabled(false); 1584 } else { 1585 finalBackgroundAlpha = 1.0f; 1586 setLayoutScale(finalScaleFactor); 1587 } 1588 } else { 1589 setPageSpacing(PagedView.AUTOMATIC_PAGE_SPACING); 1590 setLayoutScale(1.0f); 1591 } 1592 1593 final int duration = zoomIn ? 1594 getResources().getInteger(R.integer.config_workspaceUnshrinkTime) : 1595 getResources().getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1596 for (int i = 0; i < getChildCount(); i++) { 1597 final CellLayout cl = (CellLayout) getChildAt(i); 1598 float finalAlpha = (!mWorkspaceFadeInAdjacentScreens || stateIsSpringLoaded || 1599 (i == mCurrentPage)) ? 1f : 0f; 1600 float currentAlpha = cl.getShortcutsAndWidgets().getAlpha(); 1601 float initialAlpha = currentAlpha; 1602 1603 // Determine the pages alpha during the state transition 1604 if ((oldStateIsSmall && stateIsNormal) || 1605 (oldStateIsNormal && stateIsSmall)) { 1606 // To/from workspace - only show the current page unless the transition is not 1607 // animated and the animation end callback below doesn't run; 1608 // or, if we're in spring-loaded mode 1609 if (i == mCurrentPage || !animated || oldStateIsSpringLoaded) { 1610 finalAlpha = 1f; 1611 } else { 1612 initialAlpha = 0f; 1613 finalAlpha = 0f; 1614 } 1615 } 1616 1617 mOldAlphas[i] = initialAlpha; 1618 mNewAlphas[i] = finalAlpha; 1619 if (animated) { 1620 mOldTranslationXs[i] = cl.getTranslationX(); 1621 mOldTranslationYs[i] = cl.getTranslationY(); 1622 mOldScaleXs[i] = cl.getScaleX(); 1623 mOldScaleYs[i] = cl.getScaleY(); 1624 mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1625 1626 mNewTranslationXs[i] = translationX; 1627 mNewTranslationYs[i] = translationY; 1628 mNewScaleXs[i] = finalScaleFactor; 1629 mNewScaleYs[i] = finalScaleFactor; 1630 mNewBackgroundAlphas[i] = finalBackgroundAlpha; 1631 } else { 1632 cl.setTranslationX(translationX); 1633 cl.setTranslationY(translationY); 1634 cl.setScaleX(finalScaleFactor); 1635 cl.setScaleY(finalScaleFactor); 1636 cl.setBackgroundAlpha(finalBackgroundAlpha); 1637 cl.setShortcutAndWidgetAlpha(finalAlpha); 1638 } 1639 } 1640 1641 if (animated) { 1642 for (int index = 0; index < getChildCount(); index++) { 1643 final int i = index; 1644 final CellLayout cl = (CellLayout) getChildAt(i); 1645 float currentAlpha = cl.getShortcutsAndWidgets().getAlpha(); 1646 if (mOldAlphas[i] == 0 && mNewAlphas[i] == 0) { 1647 cl.setTranslationX(mNewTranslationXs[i]); 1648 cl.setTranslationY(mNewTranslationYs[i]); 1649 cl.setScaleX(mNewScaleXs[i]); 1650 cl.setScaleY(mNewScaleYs[i]); 1651 cl.setBackgroundAlpha(mNewBackgroundAlphas[i]); 1652 cl.setShortcutAndWidgetAlpha(mNewAlphas[i]); 1653 cl.setRotationY(mNewRotationYs[i]); 1654 } else { 1655 LauncherViewPropertyAnimator a = new LauncherViewPropertyAnimator(cl); 1656 a.translationX(mNewTranslationXs[i]) 1657 .translationY(mNewTranslationYs[i]) 1658 .scaleX(mNewScaleXs[i]) 1659 .scaleY(mNewScaleYs[i]) 1660 .setDuration(duration) 1661 .setInterpolator(mZoomInInterpolator); 1662 anim.play(a); 1663 1664 if (mOldAlphas[i] != mNewAlphas[i] || currentAlpha != mNewAlphas[i]) { 1665 LauncherViewPropertyAnimator alphaAnim = 1666 new LauncherViewPropertyAnimator(cl.getShortcutsAndWidgets()); 1667 alphaAnim.alpha(mNewAlphas[i]) 1668 .setDuration(duration) 1669 .setInterpolator(mZoomInInterpolator); 1670 anim.play(alphaAnim); 1671 } 1672 if (mOldBackgroundAlphas[i] != 0 || 1673 mNewBackgroundAlphas[i] != 0) { 1674 ValueAnimator bgAnim = LauncherAnimUtils.ofFloat(0f, 1f).setDuration(duration); 1675 bgAnim.setInterpolator(mZoomInInterpolator); 1676 bgAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1677 public void onAnimationUpdate(float a, float b) { 1678 cl.setBackgroundAlpha( 1679 a * mOldBackgroundAlphas[i] + 1680 b * mNewBackgroundAlphas[i]); 1681 } 1682 }); 1683 anim.play(bgAnim); 1684 } 1685 } 1686 } 1687 buildPageHardwareLayers(); 1688 anim.setStartDelay(delay); 1689 } 1690 1691 if (stateIsSpringLoaded) { 1692 // Right now we're covered by Apps Customize 1693 // Show the background gradient immediately, so the gradient will 1694 // be showing once AppsCustomize disappears 1695 animateBackgroundGradient(getResources().getInteger( 1696 R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, false); 1697 } else { 1698 // Fade the background gradient away 1699 animateBackgroundGradient(0f, true); 1700 } 1701 return anim; 1702 } 1703 1704 @Override 1705 public void onLauncherTransitionPrepare(Launcher l, boolean animated, boolean toWorkspace) { 1706 mIsSwitchingState = true; 1707 cancelScrollingIndicatorAnimations(); 1708 } 1709 1710 @Override 1711 public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) { 1712 } 1713 1714 @Override 1715 public void onLauncherTransitionStep(Launcher l, float t) { 1716 mTransitionProgress = t; 1717 } 1718 1719 @Override 1720 public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) { 1721 mIsSwitchingState = false; 1722 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 1723 updateChildrenLayersEnabled(false); 1724 // The code in getChangeStateAnimation to determine initialAlpha and finalAlpha will ensure 1725 // ensure that only the current page is visible during (and subsequently, after) the 1726 // transition animation. If fade adjacent pages is disabled, then re-enable the page 1727 // visibility after the transition animation. 1728 if (!mWorkspaceFadeInAdjacentScreens) { 1729 for (int i = 0; i < getChildCount(); i++) { 1730 final CellLayout cl = (CellLayout) getChildAt(i); 1731 cl.setShortcutAndWidgetAlpha(1f); 1732 } 1733 } 1734 } 1735 1736 @Override 1737 public View getContent() { 1738 return this; 1739 } 1740 1741 /** 1742 * Draw the View v into the given Canvas. 1743 * 1744 * @param v the view to draw 1745 * @param destCanvas the canvas to draw on 1746 * @param padding the horizontal and vertical padding to use when drawing 1747 */ 1748 private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { 1749 final Rect clipRect = mTempRect; 1750 v.getDrawingRect(clipRect); 1751 1752 boolean textVisible = false; 1753 1754 destCanvas.save(); 1755 if (v instanceof TextView && pruneToDrawable) { 1756 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1757 clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); 1758 destCanvas.translate(padding / 2, padding / 2); 1759 d.draw(destCanvas); 1760 } else { 1761 if (v instanceof FolderIcon) { 1762 // For FolderIcons the text can bleed into the icon area, and so we need to 1763 // hide the text completely (which can't be achieved by clipping). 1764 if (((FolderIcon) v).getTextVisible()) { 1765 ((FolderIcon) v).setTextVisible(false); 1766 textVisible = true; 1767 } 1768 } else if (v instanceof BubbleTextView) { 1769 final BubbleTextView tv = (BubbleTextView) v; 1770 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1771 tv.getLayout().getLineTop(0); 1772 } else if (v instanceof TextView) { 1773 final TextView tv = (TextView) v; 1774 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1775 tv.getLayout().getLineTop(0); 1776 } 1777 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1778 destCanvas.clipRect(clipRect, Op.REPLACE); 1779 v.draw(destCanvas); 1780 1781 // Restore text visibility of FolderIcon if necessary 1782 if (textVisible) { 1783 ((FolderIcon) v).setTextVisible(true); 1784 } 1785 } 1786 destCanvas.restore(); 1787 } 1788 1789 /** 1790 * Returns a new bitmap to show when the given View is being dragged around. 1791 * Responsibility for the bitmap is transferred to the caller. 1792 */ 1793 public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1794 Bitmap b; 1795 1796 if (v instanceof TextView) { 1797 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1798 b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, 1799 d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); 1800 } else { 1801 b = Bitmap.createBitmap( 1802 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1803 } 1804 1805 canvas.setBitmap(b); 1806 drawDragView(v, canvas, padding, true); 1807 canvas.setBitmap(null); 1808 1809 return b; 1810 } 1811 1812 /** 1813 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1814 * Responsibility for the bitmap is transferred to the caller. 1815 */ 1816 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1817 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1818 final Bitmap b = Bitmap.createBitmap( 1819 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1820 1821 canvas.setBitmap(b); 1822 drawDragView(v, canvas, padding, true); 1823 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1824 canvas.setBitmap(null); 1825 return b; 1826 } 1827 1828 /** 1829 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1830 * Responsibility for the bitmap is transferred to the caller. 1831 */ 1832 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h, 1833 boolean clipAlpha) { 1834 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1835 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1836 canvas.setBitmap(b); 1837 1838 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 1839 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 1840 (h - padding) / (float) orig.getHeight()); 1841 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 1842 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 1843 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 1844 1845 // center the image 1846 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 1847 1848 canvas.drawBitmap(orig, src, dst, null); 1849 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor, 1850 clipAlpha); 1851 canvas.setBitmap(null); 1852 1853 return b; 1854 } 1855 1856 void startDrag(CellLayout.CellInfo cellInfo) { 1857 View child = cellInfo.cell; 1858 1859 // Make sure the drag was started by a long press as opposed to a long click. 1860 if (!child.isInTouchMode()) { 1861 return; 1862 } 1863 1864 mDragInfo = cellInfo; 1865 child.setVisibility(INVISIBLE); 1866 CellLayout layout = (CellLayout) child.getParent().getParent(); 1867 layout.prepareChildForDrag(child); 1868 1869 child.clearFocus(); 1870 child.setPressed(false); 1871 1872 final Canvas canvas = new Canvas(); 1873 1874 // The outline is used to visualize where the item will land if dropped 1875 mDragOutline = createDragOutline(child, canvas, DRAG_BITMAP_PADDING); 1876 beginDragShared(child, this); 1877 } 1878 1879 public void beginDragShared(View child, DragSource source) { 1880 Resources r = getResources(); 1881 1882 // The drag bitmap follows the touch point around on the screen 1883 final Bitmap b = createDragBitmap(child, new Canvas(), DRAG_BITMAP_PADDING); 1884 1885 final int bmpWidth = b.getWidth(); 1886 final int bmpHeight = b.getHeight(); 1887 1888 mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 1889 int dragLayerX = 1890 Math.round(mTempXY[0] - (bmpWidth - child.getScaleX() * child.getWidth()) / 2); 1891 int dragLayerY = 1892 Math.round(mTempXY[1] - (bmpHeight - child.getScaleY() * bmpHeight) / 2 1893 - DRAG_BITMAP_PADDING / 2); 1894 1895 Point dragVisualizeOffset = null; 1896 Rect dragRect = null; 1897 if (child instanceof BubbleTextView || child instanceof PagedViewIcon) { 1898 int iconSize = r.getDimensionPixelSize(R.dimen.app_icon_size); 1899 int iconPaddingTop = r.getDimensionPixelSize(R.dimen.app_icon_padding_top); 1900 int top = child.getPaddingTop(); 1901 int left = (bmpWidth - iconSize) / 2; 1902 int right = left + iconSize; 1903 int bottom = top + iconSize; 1904 dragLayerY += top; 1905 // Note: The drag region is used to calculate drag layer offsets, but the 1906 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 1907 dragVisualizeOffset = new Point(-DRAG_BITMAP_PADDING / 2, 1908 iconPaddingTop - DRAG_BITMAP_PADDING / 2); 1909 dragRect = new Rect(left, top, right, bottom); 1910 } else if (child instanceof FolderIcon) { 1911 int previewSize = r.getDimensionPixelSize(R.dimen.folder_preview_size); 1912 dragRect = new Rect(0, 0, child.getWidth(), previewSize); 1913 } 1914 1915 // Clear the pressed state if necessary 1916 if (child instanceof BubbleTextView) { 1917 BubbleTextView icon = (BubbleTextView) child; 1918 icon.clearPressedOrFocusedBackground(); 1919 } 1920 1921 mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 1922 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect, child.getScaleX()); 1923 b.recycle(); 1924 1925 // Show the scrolling indicator when you pick up an item 1926 showScrollingIndicator(false); 1927 } 1928 1929 void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, int screen, 1930 int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { 1931 View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); 1932 1933 final int[] cellXY = new int[2]; 1934 target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1935 addInScreen(view, container, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1936 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, cellXY[0], 1937 cellXY[1]); 1938 } 1939 1940 public boolean transitionStateShouldAllowDrop() { 1941 return ((!isSwitchingState() || mTransitionProgress > 0.5f) && mState != State.SMALL); 1942 } 1943 1944 /** 1945 * {@inheritDoc} 1946 */ 1947 public boolean acceptDrop(DragObject d) { 1948 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1949 CellLayout dropTargetLayout = mDropToLayout; 1950 if (d.dragSource != this) { 1951 // Don't accept the drop if we're not over a screen at time of drop 1952 if (dropTargetLayout == null) { 1953 return false; 1954 } 1955 if (!transitionStateShouldAllowDrop()) return false; 1956 1957 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 1958 d.dragView, mDragViewVisualCenter); 1959 1960 // We want the point to be mapped to the dragTarget. 1961 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 1962 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 1963 } else { 1964 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 1965 } 1966 1967 int spanX = 1; 1968 int spanY = 1; 1969 if (mDragInfo != null) { 1970 final CellLayout.CellInfo dragCellInfo = mDragInfo; 1971 spanX = dragCellInfo.spanX; 1972 spanY = dragCellInfo.spanY; 1973 } else { 1974 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 1975 spanX = dragInfo.spanX; 1976 spanY = dragInfo.spanY; 1977 } 1978 1979 int minSpanX = spanX; 1980 int minSpanY = spanY; 1981 if (d.dragInfo instanceof PendingAddWidgetInfo) { 1982 minSpanX = ((PendingAddWidgetInfo) d.dragInfo).minSpanX; 1983 minSpanY = ((PendingAddWidgetInfo) d.dragInfo).minSpanY; 1984 } 1985 1986 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 1987 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, dropTargetLayout, 1988 mTargetCell); 1989 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 1990 mDragViewVisualCenter[1], mTargetCell); 1991 if (willCreateUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, 1992 mTargetCell, distance, true)) { 1993 return true; 1994 } 1995 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, 1996 mTargetCell, distance)) { 1997 return true; 1998 } 1999 2000 int[] resultSpan = new int[2]; 2001 mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], 2002 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2003 null, mTargetCell, resultSpan, CellLayout.MODE_ACCEPT_DROP); 2004 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2005 2006 // Don't accept the drop if there's no room for the item 2007 if (!foundCell) { 2008 // Don't show the message if we are dropping on the AllApps button and the hotseat 2009 // is full 2010 boolean isHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2011 if (mTargetCell != null && isHotseat) { 2012 Hotseat hotseat = mLauncher.getHotseat(); 2013 if (hotseat.isAllAppsButtonRank( 2014 hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { 2015 return false; 2016 } 2017 } 2018 2019 mLauncher.showOutOfSpaceMessage(isHotseat); 2020 return false; 2021 } 2022 } 2023 return true; 2024 } 2025 2026 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, float 2027 distance, boolean considerTimeout) { 2028 if (distance > mMaxDistanceForFolderCreation) return false; 2029 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2030 2031 if (dropOverView != null) { 2032 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2033 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2034 return false; 2035 } 2036 } 2037 2038 boolean hasntMoved = false; 2039 if (mDragInfo != null) { 2040 hasntMoved = dropOverView == mDragInfo.cell; 2041 } 2042 2043 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2044 return false; 2045 } 2046 2047 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2048 boolean willBecomeShortcut = 2049 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2050 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2051 2052 return (aboveShortcut && willBecomeShortcut); 2053 } 2054 2055 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell, 2056 float distance) { 2057 if (distance > mMaxDistanceForFolderCreation) return false; 2058 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2059 2060 if (dropOverView != null) { 2061 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2062 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2063 return false; 2064 } 2065 } 2066 2067 if (dropOverView instanceof FolderIcon) { 2068 FolderIcon fi = (FolderIcon) dropOverView; 2069 if (fi.acceptDrop(dragInfo)) { 2070 return true; 2071 } 2072 } 2073 return false; 2074 } 2075 2076 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2077 int[] targetCell, float distance, boolean external, DragView dragView, 2078 Runnable postAnimationRunnable) { 2079 if (distance > mMaxDistanceForFolderCreation) return false; 2080 View v = target.getChildAt(targetCell[0], targetCell[1]); 2081 2082 boolean hasntMoved = false; 2083 if (mDragInfo != null) { 2084 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2085 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2086 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2087 } 2088 2089 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2090 mCreateUserFolderOnDrop = false; 2091 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 2092 2093 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2094 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2095 2096 if (aboveShortcut && willBecomeShortcut) { 2097 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2098 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2099 // if the drag started here, we need to remove it from the workspace 2100 if (!external) { 2101 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2102 } 2103 2104 Rect folderLocation = new Rect(); 2105 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2106 target.removeView(v); 2107 2108 FolderIcon fi = 2109 mLauncher.addFolder(target, container, screen, targetCell[0], targetCell[1]); 2110 destInfo.cellX = -1; 2111 destInfo.cellY = -1; 2112 sourceInfo.cellX = -1; 2113 sourceInfo.cellY = -1; 2114 2115 // If the dragView is null, we can't animate 2116 boolean animate = dragView != null; 2117 if (animate) { 2118 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2119 postAnimationRunnable); 2120 } else { 2121 fi.addItem(destInfo); 2122 fi.addItem(sourceInfo); 2123 } 2124 return true; 2125 } 2126 return false; 2127 } 2128 2129 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2130 float distance, DragObject d, boolean external) { 2131 if (distance > mMaxDistanceForFolderCreation) return false; 2132 2133 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2134 if (!mAddToExistingFolderOnDrop) return false; 2135 mAddToExistingFolderOnDrop = false; 2136 2137 if (dropOverView instanceof FolderIcon) { 2138 FolderIcon fi = (FolderIcon) dropOverView; 2139 if (fi.acceptDrop(d.dragInfo)) { 2140 fi.onDrop(d); 2141 2142 // if the drag started here, we need to remove it from the workspace 2143 if (!external) { 2144 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2145 } 2146 return true; 2147 } 2148 } 2149 return false; 2150 } 2151 2152 public void onDrop(final DragObject d) { 2153 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2154 mDragViewVisualCenter); 2155 2156 CellLayout dropTargetLayout = mDropToLayout; 2157 2158 // We want the point to be mapped to the dragTarget. 2159 if (dropTargetLayout != null) { 2160 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 2161 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2162 } else { 2163 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 2164 } 2165 } 2166 2167 int snapScreen = -1; 2168 boolean resizeOnDrop = false; 2169 if (d.dragSource != this) { 2170 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2171 (int) mDragViewVisualCenter[1] }; 2172 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2173 } else if (mDragInfo != null) { 2174 final View cell = mDragInfo.cell; 2175 2176 Runnable resizeRunnable = null; 2177 if (dropTargetLayout != null) { 2178 // Move internally 2179 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2180 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2181 long container = hasMovedIntoHotseat ? 2182 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2183 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2184 int screen = (mTargetCell[0] < 0) ? 2185 mDragInfo.screen : indexOfChild(dropTargetLayout); 2186 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2187 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2188 // First we find the cell nearest to point at which the item is 2189 // dropped, without any consideration to whether there is an item there. 2190 2191 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2192 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2193 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2194 mDragViewVisualCenter[1], mTargetCell); 2195 2196 // If the item being dropped is a shortcut and the nearest drop 2197 // cell also contains a shortcut, then create a folder with the two shortcuts. 2198 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2199 dropTargetLayout, mTargetCell, distance, false, d.dragView, null)) { 2200 return; 2201 } 2202 2203 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, 2204 distance, d, false)) { 2205 return; 2206 } 2207 2208 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2209 // we need to find the nearest cell location that is vacant 2210 ItemInfo item = (ItemInfo) d.dragInfo; 2211 int minSpanX = item.spanX; 2212 int minSpanY = item.spanY; 2213 if (item.minSpanX > 0 && item.minSpanY > 0) { 2214 minSpanX = item.minSpanX; 2215 minSpanY = item.minSpanY; 2216 } 2217 2218 int[] resultSpan = new int[2]; 2219 mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], 2220 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, cell, 2221 mTargetCell, resultSpan, CellLayout.MODE_ON_DROP); 2222 2223 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2224 if (foundCell && (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY)) { 2225 resizeOnDrop = true; 2226 item.spanX = resultSpan[0]; 2227 item.spanY = resultSpan[1]; 2228 AppWidgetHostView awhv = (AppWidgetHostView) cell; 2229 AppWidgetResizeFrame.updateWidgetSizeRanges(awhv, mLauncher, resultSpan[0], 2230 resultSpan[1]); 2231 } 2232 2233 if (mCurrentPage != screen && !hasMovedIntoHotseat) { 2234 snapScreen = screen; 2235 snapToPage(screen); 2236 } 2237 2238 if (foundCell) { 2239 final ItemInfo info = (ItemInfo) cell.getTag(); 2240 if (hasMovedLayouts) { 2241 // Reparent the view 2242 getParentCellLayoutForView(cell).removeView(cell); 2243 addInScreen(cell, container, screen, mTargetCell[0], mTargetCell[1], 2244 info.spanX, info.spanY); 2245 } 2246 2247 // update the item's position after drop 2248 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2249 lp.cellX = lp.tmpCellX = mTargetCell[0]; 2250 lp.cellY = lp.tmpCellY = mTargetCell[1]; 2251 lp.cellHSpan = item.spanX; 2252 lp.cellVSpan = item.spanY; 2253 lp.isLockedToGrid = true; 2254 cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screen, 2255 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2256 2257 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2258 cell instanceof LauncherAppWidgetHostView) { 2259 final CellLayout cellLayout = dropTargetLayout; 2260 // We post this call so that the widget has a chance to be placed 2261 // in its final location 2262 2263 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2264 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2265 if (pinfo != null && 2266 pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2267 final Runnable addResizeFrame = new Runnable() { 2268 public void run() { 2269 DragLayer dragLayer = mLauncher.getDragLayer(); 2270 dragLayer.addResizeFrame(info, hostView, cellLayout); 2271 } 2272 }; 2273 resizeRunnable = (new Runnable() { 2274 public void run() { 2275 if (!isPageMoving()) { 2276 addResizeFrame.run(); 2277 } else { 2278 mDelayedResizeRunnable = addResizeFrame; 2279 } 2280 } 2281 }); 2282 } 2283 } 2284 2285 LauncherModel.moveItemInDatabase(mLauncher, info, container, screen, lp.cellX, 2286 lp.cellY); 2287 } else { 2288 // If we can't find a drop location, we return the item to its original position 2289 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2290 mTargetCell[0] = lp.cellX; 2291 mTargetCell[1] = lp.cellY; 2292 CellLayout layout = (CellLayout) cell.getParent().getParent(); 2293 layout.markCellsAsOccupiedForView(cell); 2294 } 2295 } 2296 2297 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2298 final Runnable finalResizeRunnable = resizeRunnable; 2299 // Prepare it to be animated into its new position 2300 // This must be called after the view has been re-parented 2301 final Runnable onCompleteRunnable = new Runnable() { 2302 @Override 2303 public void run() { 2304 mAnimatingViewIntoPlace = false; 2305 updateChildrenLayersEnabled(false); 2306 if (finalResizeRunnable != null) { 2307 finalResizeRunnable.run(); 2308 } 2309 } 2310 }; 2311 mAnimatingViewIntoPlace = true; 2312 if (d.dragView.hasDrawn()) { 2313 final ItemInfo info = (ItemInfo) cell.getTag(); 2314 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET) { 2315 int animationType = resizeOnDrop ? ANIMATE_INTO_POSITION_AND_RESIZE : 2316 ANIMATE_INTO_POSITION_AND_DISAPPEAR; 2317 animateWidgetDrop(info, parent, d.dragView, 2318 onCompleteRunnable, animationType, cell, false); 2319 } else { 2320 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2321 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2322 onCompleteRunnable, this); 2323 } 2324 } else { 2325 d.deferDragViewCleanupPostAnimation = false; 2326 cell.setVisibility(VISIBLE); 2327 } 2328 parent.onDropChild(cell); 2329 } 2330 } 2331 2332 public void setFinalScrollForPageChange(int screen) { 2333 if (screen >= 0) { 2334 mSavedScrollX = getScrollX(); 2335 CellLayout cl = (CellLayout) getChildAt(screen); 2336 mSavedTranslationX = cl.getTranslationX(); 2337 mSavedRotationY = cl.getRotationY(); 2338 final int newX = getChildOffset(screen) - getRelativeChildOffset(screen); 2339 setScrollX(newX); 2340 cl.setTranslationX(0f); 2341 cl.setRotationY(0f); 2342 } 2343 } 2344 2345 public void resetFinalScrollForPageChange(int screen) { 2346 if (screen >= 0) { 2347 CellLayout cl = (CellLayout) getChildAt(screen); 2348 setScrollX(mSavedScrollX); 2349 cl.setTranslationX(mSavedTranslationX); 2350 cl.setRotationY(mSavedRotationY); 2351 } 2352 } 2353 2354 public void getViewLocationRelativeToSelf(View v, int[] location) { 2355 getLocationInWindow(location); 2356 int x = location[0]; 2357 int y = location[1]; 2358 2359 v.getLocationInWindow(location); 2360 int vX = location[0]; 2361 int vY = location[1]; 2362 2363 location[0] = vX - x; 2364 location[1] = vY - y; 2365 } 2366 2367 public void onDragEnter(DragObject d) { 2368 mDragEnforcer.onDragEnter(); 2369 mCreateUserFolderOnDrop = false; 2370 mAddToExistingFolderOnDrop = false; 2371 2372 mDropToLayout = null; 2373 CellLayout layout = getCurrentDropLayout(); 2374 setCurrentDropLayout(layout); 2375 setCurrentDragOverlappingLayout(layout); 2376 2377 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2378 // don't need to show the outlines 2379 if (LauncherApplication.isScreenLarge()) { 2380 showOutlines(); 2381 } 2382 } 2383 2384 static Rect getCellLayoutMetrics(Launcher launcher, int orientation) { 2385 Resources res = launcher.getResources(); 2386 Display display = launcher.getWindowManager().getDefaultDisplay(); 2387 Point smallestSize = new Point(); 2388 Point largestSize = new Point(); 2389 display.getCurrentSizeRange(smallestSize, largestSize); 2390 if (orientation == CellLayout.LANDSCAPE) { 2391 if (mLandscapeCellLayoutMetrics == null) { 2392 int paddingLeft = res.getDimensionPixelSize(R.dimen.workspace_left_padding_land); 2393 int paddingRight = res.getDimensionPixelSize(R.dimen.workspace_right_padding_land); 2394 int paddingTop = res.getDimensionPixelSize(R.dimen.workspace_top_padding_land); 2395 int paddingBottom = res.getDimensionPixelSize(R.dimen.workspace_bottom_padding_land); 2396 int width = largestSize.x - paddingLeft - paddingRight; 2397 int height = smallestSize.y - paddingTop - paddingBottom; 2398 mLandscapeCellLayoutMetrics = new Rect(); 2399 CellLayout.getMetrics(mLandscapeCellLayoutMetrics, res, 2400 width, height, LauncherModel.getCellCountX(), LauncherModel.getCellCountY(), 2401 orientation); 2402 } 2403 return mLandscapeCellLayoutMetrics; 2404 } else if (orientation == CellLayout.PORTRAIT) { 2405 if (mPortraitCellLayoutMetrics == null) { 2406 int paddingLeft = res.getDimensionPixelSize(R.dimen.workspace_left_padding_land); 2407 int paddingRight = res.getDimensionPixelSize(R.dimen.workspace_right_padding_land); 2408 int paddingTop = res.getDimensionPixelSize(R.dimen.workspace_top_padding_land); 2409 int paddingBottom = res.getDimensionPixelSize(R.dimen.workspace_bottom_padding_land); 2410 int width = smallestSize.x - paddingLeft - paddingRight; 2411 int height = largestSize.y - paddingTop - paddingBottom; 2412 mPortraitCellLayoutMetrics = new Rect(); 2413 CellLayout.getMetrics(mPortraitCellLayoutMetrics, res, 2414 width, height, LauncherModel.getCellCountX(), LauncherModel.getCellCountY(), 2415 orientation); 2416 } 2417 return mPortraitCellLayoutMetrics; 2418 } 2419 return null; 2420 } 2421 2422 public void onDragExit(DragObject d) { 2423 mDragEnforcer.onDragExit(); 2424 2425 // Here we store the final page that will be dropped to, if the workspace in fact 2426 // receives the drop 2427 if (mInScrollArea) { 2428 if (isPageMoving()) { 2429 // If the user drops while the page is scrolling, we should use that page as the 2430 // destination instead of the page that is being hovered over. 2431 mDropToLayout = (CellLayout) getPageAt(getNextPage()); 2432 } else { 2433 mDropToLayout = mDragOverlappingLayout; 2434 } 2435 } else { 2436 mDropToLayout = mDragTargetLayout; 2437 } 2438 2439 if (mDragMode == DRAG_MODE_CREATE_FOLDER) { 2440 mCreateUserFolderOnDrop = true; 2441 } else if (mDragMode == DRAG_MODE_ADD_TO_FOLDER) { 2442 mAddToExistingFolderOnDrop = true; 2443 } 2444 2445 // Reset the scroll area and previous drag target 2446 onResetScrollArea(); 2447 setCurrentDropLayout(null); 2448 setCurrentDragOverlappingLayout(null); 2449 2450 mSpringLoadedDragController.cancel(); 2451 2452 if (!mIsPageMoving) { 2453 hideOutlines(); 2454 } 2455 } 2456 2457 void setCurrentDropLayout(CellLayout layout) { 2458 if (mDragTargetLayout != null) { 2459 mDragTargetLayout.revertTempState(); 2460 mDragTargetLayout.onDragExit(); 2461 } 2462 mDragTargetLayout = layout; 2463 if (mDragTargetLayout != null) { 2464 mDragTargetLayout.onDragEnter(); 2465 } 2466 cleanupReorder(true); 2467 cleanupFolderCreation(); 2468 setCurrentDropOverCell(-1, -1); 2469 } 2470 2471 void setCurrentDragOverlappingLayout(CellLayout layout) { 2472 if (mDragOverlappingLayout != null) { 2473 mDragOverlappingLayout.setIsDragOverlapping(false); 2474 } 2475 mDragOverlappingLayout = layout; 2476 if (mDragOverlappingLayout != null) { 2477 mDragOverlappingLayout.setIsDragOverlapping(true); 2478 } 2479 invalidate(); 2480 } 2481 2482 void setCurrentDropOverCell(int x, int y) { 2483 if (x != mDragOverX || y != mDragOverY) { 2484 mDragOverX = x; 2485 mDragOverY = y; 2486 setDragMode(DRAG_MODE_NONE); 2487 } 2488 } 2489 2490 void setDragMode(int dragMode) { 2491 if (dragMode != mDragMode) { 2492 if (dragMode == DRAG_MODE_NONE) { 2493 cleanupAddToFolder(); 2494 // We don't want to cancel the re-order alarm every time the target cell changes 2495 // as this feels to slow / unresponsive. 2496 cleanupReorder(false); 2497 cleanupFolderCreation(); 2498 } else if (dragMode == DRAG_MODE_ADD_TO_FOLDER) { 2499 cleanupReorder(true); 2500 cleanupFolderCreation(); 2501 } else if (dragMode == DRAG_MODE_CREATE_FOLDER) { 2502 cleanupAddToFolder(); 2503 cleanupReorder(true); 2504 } else if (dragMode == DRAG_MODE_REORDER) { 2505 cleanupAddToFolder(); 2506 cleanupFolderCreation(); 2507 } 2508 mDragMode = dragMode; 2509 } 2510 } 2511 2512 private void cleanupFolderCreation() { 2513 if (mDragFolderRingAnimator != null) { 2514 mDragFolderRingAnimator.animateToNaturalState(); 2515 } 2516 mFolderCreationAlarm.cancelAlarm(); 2517 } 2518 2519 private void cleanupAddToFolder() { 2520 if (mDragOverFolderIcon != null) { 2521 mDragOverFolderIcon.onDragExit(null); 2522 mDragOverFolderIcon = null; 2523 } 2524 } 2525 2526 private void cleanupReorder(boolean cancelAlarm) { 2527 // Any pending reorders are canceled 2528 if (cancelAlarm) { 2529 mReorderAlarm.cancelAlarm(); 2530 } 2531 mLastReorderX = -1; 2532 mLastReorderY = -1; 2533 } 2534 2535 public DropTarget getDropTargetDelegate(DragObject d) { 2536 return null; 2537 } 2538 2539 /* 2540 * 2541 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2542 * coordinate space. The argument xy is modified with the return result. 2543 * 2544 */ 2545 void mapPointFromSelfToChild(View v, float[] xy) { 2546 mapPointFromSelfToChild(v, xy, null); 2547 } 2548 2549 /* 2550 * 2551 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2552 * coordinate space. The argument xy is modified with the return result. 2553 * 2554 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2555 * computing it itself; we use this to avoid redundant matrix inversions in 2556 * findMatchingPageForDragOver 2557 * 2558 */ 2559 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2560 if (cachedInverseMatrix == null) { 2561 v.getMatrix().invert(mTempInverseMatrix); 2562 cachedInverseMatrix = mTempInverseMatrix; 2563 } 2564 int scrollX = getScrollX(); 2565 if (mNextPage != INVALID_PAGE) { 2566 scrollX = mScroller.getFinalX(); 2567 } 2568 xy[0] = xy[0] + scrollX - v.getLeft(); 2569 xy[1] = xy[1] + getScrollY() - v.getTop(); 2570 cachedInverseMatrix.mapPoints(xy); 2571 } 2572 2573 /* 2574 * Maps a point from the Workspace's coordinate system to another sibling view's. (Workspace 2575 * covers the full screen) 2576 */ 2577 void mapPointFromSelfToSibling(View v, float[] xy) { 2578 xy[0] = xy[0] - v.getLeft(); 2579 xy[1] = xy[1] - v.getTop(); 2580 } 2581 2582 void mapPointFromSelfToHotseatLayout(Hotseat hotseat, float[] xy) { 2583 xy[0] = xy[0] - hotseat.getLeft() - hotseat.getLayout().getLeft(); 2584 xy[1] = xy[1] - hotseat.getTop() - hotseat.getLayout().getTop(); 2585 } 2586 2587 /* 2588 * 2589 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2590 * the parent View's coordinate space. The argument xy is modified with the return result. 2591 * 2592 */ 2593 void mapPointFromChildToSelf(View v, float[] xy) { 2594 v.getMatrix().mapPoints(xy); 2595 int scrollX = getScrollX(); 2596 if (mNextPage != INVALID_PAGE) { 2597 scrollX = mScroller.getFinalX(); 2598 } 2599 xy[0] -= (scrollX - v.getLeft()); 2600 xy[1] -= (getScrollY() - v.getTop()); 2601 } 2602 2603 static private float squaredDistance(float[] point1, float[] point2) { 2604 float distanceX = point1[0] - point2[0]; 2605 float distanceY = point2[1] - point2[1]; 2606 return distanceX * distanceX + distanceY * distanceY; 2607 } 2608 2609 /* 2610 * 2611 * Returns true if the passed CellLayout cl overlaps with dragView 2612 * 2613 */ 2614 boolean overlaps(CellLayout cl, DragView dragView, 2615 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2616 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2617 final float[] draggedItemTopLeft = mTempDragCoordinates; 2618 draggedItemTopLeft[0] = dragViewX; 2619 draggedItemTopLeft[1] = dragViewY; 2620 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2621 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2622 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2623 2624 // Transform the dragged item's top left coordinates 2625 // to the CellLayout's local coordinates 2626 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2627 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2628 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2629 2630 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2631 // Transform the dragged item's bottom right coordinates 2632 // to the CellLayout's local coordinates 2633 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2634 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2635 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2636 2637 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2638 float overlap = (overlapRegionRight - overlapRegionLeft) * 2639 (overlapRegionBottom - overlapRegionTop); 2640 if (overlap > 0) { 2641 return true; 2642 } 2643 } 2644 } 2645 return false; 2646 } 2647 2648 /* 2649 * 2650 * This method returns the CellLayout that is currently being dragged to. In order to drag 2651 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2652 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2653 * 2654 * Return null if no CellLayout is currently being dragged over 2655 * 2656 */ 2657 private CellLayout findMatchingPageForDragOver( 2658 DragView dragView, float originX, float originY, boolean exact) { 2659 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2660 // with the item being dragged and then choose the one that's closest to the touch point 2661 final int screenCount = getChildCount(); 2662 CellLayout bestMatchingScreen = null; 2663 float smallestDistSoFar = Float.MAX_VALUE; 2664 2665 for (int i = 0; i < screenCount; i++) { 2666 CellLayout cl = (CellLayout) getChildAt(i); 2667 2668 final float[] touchXy = {originX, originY}; 2669 // Transform the touch coordinates to the CellLayout's local coordinates 2670 // If the touch point is within the bounds of the cell layout, we can return immediately 2671 cl.getMatrix().invert(mTempInverseMatrix); 2672 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2673 2674 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2675 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2676 return cl; 2677 } 2678 2679 if (!exact) { 2680 // Get the center of the cell layout in screen coordinates 2681 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2682 cellLayoutCenter[0] = cl.getWidth()/2; 2683 cellLayoutCenter[1] = cl.getHeight()/2; 2684 mapPointFromChildToSelf(cl, cellLayoutCenter); 2685 2686 touchXy[0] = originX; 2687 touchXy[1] = originY; 2688 2689 // Calculate the distance between the center of the CellLayout 2690 // and the touch point 2691 float dist = squaredDistance(touchXy, cellLayoutCenter); 2692 2693 if (dist < smallestDistSoFar) { 2694 smallestDistSoFar = dist; 2695 bestMatchingScreen = cl; 2696 } 2697 } 2698 } 2699 return bestMatchingScreen; 2700 } 2701 2702 // This is used to compute the visual center of the dragView. This point is then 2703 // used to visualize drop locations and determine where to drop an item. The idea is that 2704 // the visual center represents the user's interpretation of where the item is, and hence 2705 // is the appropriate point to use when determining drop location. 2706 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2707 DragView dragView, float[] recycle) { 2708 float res[]; 2709 if (recycle == null) { 2710 res = new float[2]; 2711 } else { 2712 res = recycle; 2713 } 2714 2715 // First off, the drag view has been shifted in a way that is not represented in the 2716 // x and y values or the x/yOffsets. Here we account for that shift. 2717 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2718 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2719 2720 // These represent the visual top and left of drag view if a dragRect was provided. 2721 // If a dragRect was not provided, then they correspond to the actual view left and 2722 // top, as the dragRect is in that case taken to be the entire dragView. 2723 // R.dimen.dragViewOffsetY. 2724 int left = x - xOffset; 2725 int top = y - yOffset; 2726 2727 // In order to find the visual center, we shift by half the dragRect 2728 res[0] = left + dragView.getDragRegion().width() / 2; 2729 res[1] = top + dragView.getDragRegion().height() / 2; 2730 2731 return res; 2732 } 2733 2734 private boolean isDragWidget(DragObject d) { 2735 return (d.dragInfo instanceof LauncherAppWidgetInfo || 2736 d.dragInfo instanceof PendingAddWidgetInfo); 2737 } 2738 private boolean isExternalDragWidget(DragObject d) { 2739 return d.dragSource != this && isDragWidget(d); 2740 } 2741 2742 public void onDragOver(DragObject d) { 2743 // Skip drag over events while we are dragging over side pages 2744 if (mInScrollArea || mIsSwitchingState || mState == State.SMALL) return; 2745 2746 Rect r = new Rect(); 2747 CellLayout layout = null; 2748 ItemInfo item = (ItemInfo) d.dragInfo; 2749 2750 // Ensure that we have proper spans for the item that we are dropping 2751 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2752 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2753 d.dragView, mDragViewVisualCenter); 2754 2755 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2756 // Identify whether we have dragged over a side page 2757 if (isSmall()) { 2758 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 2759 mLauncher.getHotseat().getHitRect(r); 2760 if (r.contains(d.x, d.y)) { 2761 layout = mLauncher.getHotseat().getLayout(); 2762 } 2763 } 2764 if (layout == null) { 2765 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false); 2766 } 2767 if (layout != mDragTargetLayout) { 2768 2769 setCurrentDropLayout(layout); 2770 setCurrentDragOverlappingLayout(layout); 2771 2772 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 2773 if (isInSpringLoadedMode) { 2774 if (mLauncher.isHotseatLayout(layout)) { 2775 mSpringLoadedDragController.cancel(); 2776 } else { 2777 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2778 } 2779 } 2780 } 2781 } else { 2782 // Test to see if we are over the hotseat otherwise just use the current page 2783 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 2784 mLauncher.getHotseat().getHitRect(r); 2785 if (r.contains(d.x, d.y)) { 2786 layout = mLauncher.getHotseat().getLayout(); 2787 } 2788 } 2789 if (layout == null) { 2790 layout = getCurrentDropLayout(); 2791 } 2792 if (layout != mDragTargetLayout) { 2793 setCurrentDropLayout(layout); 2794 setCurrentDragOverlappingLayout(layout); 2795 } 2796 } 2797 2798 // Handle the drag over 2799 if (mDragTargetLayout != null) { 2800 // We want the point to be mapped to the dragTarget. 2801 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2802 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2803 } else { 2804 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2805 } 2806 2807 ItemInfo info = (ItemInfo) d.dragInfo; 2808 2809 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2810 (int) mDragViewVisualCenter[1], item.spanX, item.spanY, 2811 mDragTargetLayout, mTargetCell); 2812 2813 setCurrentDropOverCell(mTargetCell[0], mTargetCell[1]); 2814 2815 float targetCellDistance = mDragTargetLayout.getDistanceFromCell( 2816 mDragViewVisualCenter[0], mDragViewVisualCenter[1], mTargetCell); 2817 2818 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2819 mTargetCell[1]); 2820 2821 manageFolderFeedback(info, mDragTargetLayout, mTargetCell, 2822 targetCellDistance, dragOverView); 2823 2824 int minSpanX = item.spanX; 2825 int minSpanY = item.spanY; 2826 if (item.minSpanX > 0 && item.minSpanY > 0) { 2827 minSpanX = item.minSpanX; 2828 minSpanY = item.minSpanY; 2829 } 2830 2831 boolean nearestDropOccupied = mDragTargetLayout.isNearestDropLocationOccupied((int) 2832 mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], item.spanX, 2833 item.spanY, child, mTargetCell); 2834 2835 if (!nearestDropOccupied) { 2836 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2837 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2838 mTargetCell[0], mTargetCell[1], item.spanX, item.spanY, false, 2839 d.dragView.getDragVisualizeOffset(), d.dragView.getDragRegion()); 2840 } else if ((mDragMode == DRAG_MODE_NONE || mDragMode == DRAG_MODE_REORDER) 2841 && !mReorderAlarm.alarmPending() && (mLastReorderX != mTargetCell[0] || 2842 mLastReorderY != mTargetCell[1])) { 2843 2844 // Otherwise, if we aren't adding to or creating a folder and there's no pending 2845 // reorder, then we schedule a reorder 2846 ReorderAlarmListener listener = new ReorderAlarmListener(mDragViewVisualCenter, 2847 minSpanX, minSpanY, item.spanX, item.spanY, d.dragView, child); 2848 mReorderAlarm.setOnAlarmListener(listener); 2849 mReorderAlarm.setAlarm(REORDER_TIMEOUT); 2850 } 2851 2852 if (mDragMode == DRAG_MODE_CREATE_FOLDER || mDragMode == DRAG_MODE_ADD_TO_FOLDER || 2853 !nearestDropOccupied) { 2854 if (mDragTargetLayout != null) { 2855 mDragTargetLayout.revertTempState(); 2856 } 2857 } 2858 } 2859 } 2860 2861 private void manageFolderFeedback(ItemInfo info, CellLayout targetLayout, 2862 int[] targetCell, float distance, View dragOverView) { 2863 boolean userFolderPending = willCreateUserFolder(info, targetLayout, targetCell, distance, 2864 false); 2865 2866 if (mDragMode == DRAG_MODE_NONE && userFolderPending && 2867 !mFolderCreationAlarm.alarmPending()) { 2868 mFolderCreationAlarm.setOnAlarmListener(new 2869 FolderCreationAlarmListener(targetLayout, targetCell[0], targetCell[1])); 2870 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2871 return; 2872 } 2873 2874 boolean willAddToFolder = 2875 willAddToExistingUserFolder(info, targetLayout, targetCell, distance); 2876 2877 if (willAddToFolder && mDragMode == DRAG_MODE_NONE) { 2878 mDragOverFolderIcon = ((FolderIcon) dragOverView); 2879 mDragOverFolderIcon.onDragEnter(info); 2880 if (targetLayout != null) { 2881 targetLayout.clearDragOutlines(); 2882 } 2883 setDragMode(DRAG_MODE_ADD_TO_FOLDER); 2884 return; 2885 } 2886 2887 if (mDragMode == DRAG_MODE_ADD_TO_FOLDER && !willAddToFolder) { 2888 setDragMode(DRAG_MODE_NONE); 2889 } 2890 if (mDragMode == DRAG_MODE_CREATE_FOLDER && !userFolderPending) { 2891 setDragMode(DRAG_MODE_NONE); 2892 } 2893 2894 return; 2895 } 2896 2897 class FolderCreationAlarmListener implements OnAlarmListener { 2898 CellLayout layout; 2899 int cellX; 2900 int cellY; 2901 2902 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 2903 this.layout = layout; 2904 this.cellX = cellX; 2905 this.cellY = cellY; 2906 } 2907 2908 public void onAlarm(Alarm alarm) { 2909 if (mDragFolderRingAnimator == null) { 2910 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 2911 } 2912 mDragFolderRingAnimator.setCell(cellX, cellY); 2913 mDragFolderRingAnimator.setCellLayout(layout); 2914 mDragFolderRingAnimator.animateToAcceptState(); 2915 layout.showFolderAccept(mDragFolderRingAnimator); 2916 layout.clearDragOutlines(); 2917 setDragMode(DRAG_MODE_CREATE_FOLDER); 2918 } 2919 } 2920 2921 class ReorderAlarmListener implements OnAlarmListener { 2922 float[] dragViewCenter; 2923 int minSpanX, minSpanY, spanX, spanY; 2924 DragView dragView; 2925 View child; 2926 2927 public ReorderAlarmListener(float[] dragViewCenter, int minSpanX, int minSpanY, int spanX, 2928 int spanY, DragView dragView, View child) { 2929 this.dragViewCenter = dragViewCenter; 2930 this.minSpanX = minSpanX; 2931 this.minSpanY = minSpanY; 2932 this.spanX = spanX; 2933 this.spanY = spanY; 2934 this.child = child; 2935 this.dragView = dragView; 2936 } 2937 2938 public void onAlarm(Alarm alarm) { 2939 int[] resultSpan = new int[2]; 2940 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2941 (int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell); 2942 mLastReorderX = mTargetCell[0]; 2943 mLastReorderY = mTargetCell[1]; 2944 2945 mTargetCell = mDragTargetLayout.createArea((int) mDragViewVisualCenter[0], 2946 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2947 child, mTargetCell, resultSpan, CellLayout.MODE_DRAG_OVER); 2948 2949 if (mTargetCell[0] < 0 || mTargetCell[1] < 0) { 2950 mDragTargetLayout.revertTempState(); 2951 } else { 2952 setDragMode(DRAG_MODE_REORDER); 2953 } 2954 2955 boolean resize = resultSpan[0] != spanX || resultSpan[1] != spanY; 2956 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2957 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2958 mTargetCell[0], mTargetCell[1], resultSpan[0], resultSpan[1], resize, 2959 dragView.getDragVisualizeOffset(), dragView.getDragRegion()); 2960 } 2961 } 2962 2963 @Override 2964 public void getHitRect(Rect outRect) { 2965 // We want the workspace to have the whole area of the display (it will find the correct 2966 // cell layout to drop to in the existing drag/drop logic. 2967 outRect.set(0, 0, mDisplaySize.x, mDisplaySize.y); 2968 } 2969 2970 /** 2971 * Add the item specified by dragInfo to the given layout. 2972 * @return true if successful 2973 */ 2974 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2975 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2976 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2977 return true; 2978 } 2979 mLauncher.showOutOfSpaceMessage(mLauncher.isHotseatLayout(layout)); 2980 return false; 2981 } 2982 2983 private void onDropExternal(int[] touchXY, Object dragInfo, 2984 CellLayout cellLayout, boolean insertAtFirst) { 2985 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 2986 } 2987 2988 /** 2989 * Drop an item that didn't originate on one of the workspace screens. 2990 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2991 * come from another app altogether. 2992 * 2993 * NOTE: This can also be called when we are outside of a drag event, when we want 2994 * to add an item to one of the workspace screens. 2995 */ 2996 private void onDropExternal(final int[] touchXY, final Object dragInfo, 2997 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 2998 final Runnable exitSpringLoadedRunnable = new Runnable() { 2999 @Override 3000 public void run() { 3001 mLauncher.exitSpringLoadedDragModeDelayed(true, false, null); 3002 } 3003 }; 3004 3005 ItemInfo info = (ItemInfo) dragInfo; 3006 int spanX = info.spanX; 3007 int spanY = info.spanY; 3008 if (mDragInfo != null) { 3009 spanX = mDragInfo.spanX; 3010 spanY = mDragInfo.spanY; 3011 } 3012 3013 final long container = mLauncher.isHotseatLayout(cellLayout) ? 3014 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 3015 LauncherSettings.Favorites.CONTAINER_DESKTOP; 3016 final int screen = indexOfChild(cellLayout); 3017 if (!mLauncher.isHotseatLayout(cellLayout) && screen != mCurrentPage 3018 && mState != State.SPRING_LOADED) { 3019 snapToPage(screen); 3020 } 3021 3022 if (info instanceof PendingAddItemInfo) { 3023 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 3024 3025 boolean findNearestVacantCell = true; 3026 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 3027 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3028 cellLayout, mTargetCell); 3029 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3030 mDragViewVisualCenter[1], mTargetCell); 3031 if (willCreateUserFolder((ItemInfo) d.dragInfo, cellLayout, mTargetCell, 3032 distance, true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 3033 cellLayout, mTargetCell, distance)) { 3034 findNearestVacantCell = false; 3035 } 3036 } 3037 3038 final ItemInfo item = (ItemInfo) d.dragInfo; 3039 if (findNearestVacantCell) { 3040 int minSpanX = item.spanX; 3041 int minSpanY = item.spanY; 3042 if (item.minSpanX > 0 && item.minSpanY > 0) { 3043 minSpanX = item.minSpanX; 3044 minSpanY = item.minSpanY; 3045 } 3046 int[] resultSpan = new int[2]; 3047 mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], 3048 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, info.spanX, info.spanY, 3049 null, mTargetCell, resultSpan, CellLayout.MODE_ON_DROP_EXTERNAL); 3050 item.spanX = resultSpan[0]; 3051 item.spanY = resultSpan[1]; 3052 } 3053 3054 Runnable onAnimationCompleteRunnable = new Runnable() { 3055 @Override 3056 public void run() { 3057 // When dragging and dropping from customization tray, we deal with creating 3058 // widgets/shortcuts/folders in a slightly different way 3059 switch (pendingInfo.itemType) { 3060 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 3061 int span[] = new int[2]; 3062 span[0] = item.spanX; 3063 span[1] = item.spanY; 3064 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, 3065 container, screen, mTargetCell, span, null); 3066 break; 3067 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3068 mLauncher.processShortcutFromDrop(pendingInfo.componentName, 3069 container, screen, mTargetCell, null); 3070 break; 3071 default: 3072 throw new IllegalStateException("Unknown item type: " + 3073 pendingInfo.itemType); 3074 } 3075 } 3076 }; 3077 View finalView = pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET 3078 ? ((PendingAddWidgetInfo) pendingInfo).boundWidget : null; 3079 int animationStyle = ANIMATE_INTO_POSITION_AND_DISAPPEAR; 3080 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && 3081 ((PendingAddWidgetInfo) pendingInfo).info.configure != null) { 3082 animationStyle = ANIMATE_INTO_POSITION_AND_REMAIN; 3083 } 3084 animateWidgetDrop(info, cellLayout, d.dragView, onAnimationCompleteRunnable, 3085 animationStyle, finalView, true); 3086 } else { 3087 // This is for other drag/drop cases, like dragging from All Apps 3088 View view = null; 3089 3090 switch (info.itemType) { 3091 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 3092 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3093 if (info.container == NO_ID && info instanceof ApplicationInfo) { 3094 // Came from all apps -- make a copy 3095 info = new ShortcutInfo((ApplicationInfo) info); 3096 } 3097 view = mLauncher.createShortcut(R.layout.application, cellLayout, 3098 (ShortcutInfo) info); 3099 break; 3100 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 3101 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 3102 (FolderInfo) info, mIconCache); 3103 break; 3104 default: 3105 throw new IllegalStateException("Unknown item type: " + info.itemType); 3106 } 3107 3108 // First we find the cell nearest to point at which the item is 3109 // dropped, without any consideration to whether there is an item there. 3110 if (touchXY != null) { 3111 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3112 cellLayout, mTargetCell); 3113 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3114 mDragViewVisualCenter[1], mTargetCell); 3115 d.postAnimationRunnable = exitSpringLoadedRunnable; 3116 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, distance, 3117 true, d.dragView, d.postAnimationRunnable)) { 3118 return; 3119 } 3120 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, distance, d, 3121 true)) { 3122 return; 3123 } 3124 } 3125 3126 if (touchXY != null) { 3127 // when dragging and dropping, just find the closest free spot 3128 mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], 3129 (int) mDragViewVisualCenter[1], 1, 1, 1, 1, 3130 null, mTargetCell, null, CellLayout.MODE_ON_DROP_EXTERNAL); 3131 } else { 3132 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3133 } 3134 addInScreen(view, container, screen, mTargetCell[0], mTargetCell[1], info.spanX, 3135 info.spanY, insertAtFirst); 3136 cellLayout.onDropChild(view); 3137 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 3138 cellLayout.getShortcutsAndWidgets().measureChild(view); 3139 3140 3141 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, 3142 lp.cellX, lp.cellY); 3143 3144 if (d.dragView != null) { 3145 // We wrap the animation call in the temporary set and reset of the current 3146 // cellLayout to its final transform -- this means we animate the drag view to 3147 // the correct final location. 3148 setFinalTransitionTransform(cellLayout); 3149 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 3150 exitSpringLoadedRunnable); 3151 resetTransitionTransform(cellLayout); 3152 } 3153 } 3154 } 3155 3156 public Bitmap createWidgetBitmap(ItemInfo widgetInfo, View layout) { 3157 int[] unScaledSize = mLauncher.getWorkspace().estimateItemSize(widgetInfo.spanX, 3158 widgetInfo.spanY, widgetInfo, false); 3159 int visibility = layout.getVisibility(); 3160 layout.setVisibility(VISIBLE); 3161 3162 int width = MeasureSpec.makeMeasureSpec(unScaledSize[0], MeasureSpec.EXACTLY); 3163 int height = MeasureSpec.makeMeasureSpec(unScaledSize[1], MeasureSpec.EXACTLY); 3164 Bitmap b = Bitmap.createBitmap(unScaledSize[0], unScaledSize[1], 3165 Bitmap.Config.ARGB_8888); 3166 Canvas c = new Canvas(b); 3167 3168 layout.measure(width, height); 3169 layout.layout(0, 0, unScaledSize[0], unScaledSize[1]); 3170 layout.draw(c); 3171 c.setBitmap(null); 3172 layout.setVisibility(visibility); 3173 return b; 3174 } 3175 3176 private void getFinalPositionForDropAnimation(int[] loc, float[] scaleXY, 3177 DragView dragView, CellLayout layout, ItemInfo info, int[] targetCell, 3178 boolean external, boolean scale) { 3179 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 3180 // location and size on the home screen. 3181 int spanX = info.spanX; 3182 int spanY = info.spanY; 3183 3184 Rect r = estimateItemPosition(layout, info, targetCell[0], targetCell[1], spanX, spanY); 3185 loc[0] = r.left; 3186 loc[1] = r.top; 3187 3188 setFinalTransitionTransform(layout); 3189 float cellLayoutScale = 3190 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(layout, loc); 3191 resetTransitionTransform(layout); 3192 3193 float dragViewScaleX; 3194 float dragViewScaleY; 3195 if (scale) { 3196 dragViewScaleX = (1.0f * r.width()) / dragView.getMeasuredWidth(); 3197 dragViewScaleY = (1.0f * r.height()) / dragView.getMeasuredHeight(); 3198 } else { 3199 dragViewScaleX = 1f; 3200 dragViewScaleY = 1f; 3201 } 3202 3203 // The animation will scale the dragView about its center, so we need to center about 3204 // the final location. 3205 loc[0] -= (dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 3206 loc[1] -= (dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 3207 3208 scaleXY[0] = dragViewScaleX * cellLayoutScale; 3209 scaleXY[1] = dragViewScaleY * cellLayoutScale; 3210 } 3211 3212 public void animateWidgetDrop(ItemInfo info, CellLayout cellLayout, DragView dragView, 3213 final Runnable onCompleteRunnable, int animationType, final View finalView, 3214 boolean external) { 3215 Rect from = new Rect(); 3216 mLauncher.getDragLayer().getViewRectRelativeToSelf(dragView, from); 3217 3218 int[] finalPos = new int[2]; 3219 float scaleXY[] = new float[2]; 3220 boolean scalePreview = !(info instanceof PendingAddShortcutInfo); 3221 getFinalPositionForDropAnimation(finalPos, scaleXY, dragView, cellLayout, info, mTargetCell, 3222 external, scalePreview); 3223 3224 Resources res = mLauncher.getResources(); 3225 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration) - 200; 3226 3227 // In the case where we've prebound the widget, we remove it from the DragLayer 3228 if (finalView instanceof AppWidgetHostView && external) { 3229 Log.d(TAG, "6557954 Animate widget drop, final view is appWidgetHostView"); 3230 mLauncher.getDragLayer().removeView(finalView); 3231 } 3232 if ((animationType == ANIMATE_INTO_POSITION_AND_RESIZE || external) && finalView != null) { 3233 Bitmap crossFadeBitmap = createWidgetBitmap(info, finalView); 3234 dragView.setCrossFadeBitmap(crossFadeBitmap); 3235 dragView.crossFade((int) (duration * 0.8f)); 3236 } else if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && external) { 3237 scaleXY[0] = scaleXY[1] = Math.min(scaleXY[0], scaleXY[1]); 3238 } 3239 3240 DragLayer dragLayer = mLauncher.getDragLayer(); 3241 if (animationType == CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION) { 3242 mLauncher.getDragLayer().animateViewIntoPosition(dragView, finalPos, 0f, 0.1f, 0.1f, 3243 DragLayer.ANIMATION_END_DISAPPEAR, onCompleteRunnable, duration); 3244 } else { 3245 int endStyle; 3246 if (animationType == ANIMATE_INTO_POSITION_AND_REMAIN) { 3247 endStyle = DragLayer.ANIMATION_END_REMAIN_VISIBLE; 3248 } else { 3249 endStyle = DragLayer.ANIMATION_END_DISAPPEAR;; 3250 } 3251 3252 Runnable onComplete = new Runnable() { 3253 @Override 3254 public void run() { 3255 if (finalView != null) { 3256 finalView.setVisibility(VISIBLE); 3257 } 3258 if (onCompleteRunnable != null) { 3259 onCompleteRunnable.run(); 3260 } 3261 } 3262 }; 3263 dragLayer.animateViewIntoPosition(dragView, from.left, from.top, finalPos[0], 3264 finalPos[1], 1, 1, 1, scaleXY[0], scaleXY[1], onComplete, endStyle, 3265 duration, this); 3266 } 3267 } 3268 3269 public void setFinalTransitionTransform(CellLayout layout) { 3270 if (isSwitchingState()) { 3271 int index = indexOfChild(layout); 3272 mCurrentScaleX = layout.getScaleX(); 3273 mCurrentScaleY = layout.getScaleY(); 3274 mCurrentTranslationX = layout.getTranslationX(); 3275 mCurrentTranslationY = layout.getTranslationY(); 3276 mCurrentRotationY = layout.getRotationY(); 3277 layout.setScaleX(mNewScaleXs[index]); 3278 layout.setScaleY(mNewScaleYs[index]); 3279 layout.setTranslationX(mNewTranslationXs[index]); 3280 layout.setTranslationY(mNewTranslationYs[index]); 3281 layout.setRotationY(mNewRotationYs[index]); 3282 } 3283 } 3284 public void resetTransitionTransform(CellLayout layout) { 3285 if (isSwitchingState()) { 3286 mCurrentScaleX = layout.getScaleX(); 3287 mCurrentScaleY = layout.getScaleY(); 3288 mCurrentTranslationX = layout.getTranslationX(); 3289 mCurrentTranslationY = layout.getTranslationY(); 3290 mCurrentRotationY = layout.getRotationY(); 3291 layout.setScaleX(mCurrentScaleX); 3292 layout.setScaleY(mCurrentScaleY); 3293 layout.setTranslationX(mCurrentTranslationX); 3294 layout.setTranslationY(mCurrentTranslationY); 3295 layout.setRotationY(mCurrentRotationY); 3296 } 3297 } 3298 3299 /** 3300 * Return the current {@link CellLayout}, correctly picking the destination 3301 * screen while a scroll is in progress. 3302 */ 3303 public CellLayout getCurrentDropLayout() { 3304 return (CellLayout) getChildAt(getNextPage()); 3305 } 3306 3307 /** 3308 * Return the current CellInfo describing our current drag; this method exists 3309 * so that Launcher can sync this object with the correct info when the activity is created/ 3310 * destroyed 3311 * 3312 */ 3313 public CellLayout.CellInfo getDragInfo() { 3314 return mDragInfo; 3315 } 3316 3317 /** 3318 * Calculate the nearest cell where the given object would be dropped. 3319 * 3320 * pixelX and pixelY should be in the coordinate system of layout 3321 */ 3322 private int[] findNearestArea(int pixelX, int pixelY, 3323 int spanX, int spanY, CellLayout layout, int[] recycle) { 3324 return layout.findNearestArea( 3325 pixelX, pixelY, spanX, spanY, recycle); 3326 } 3327 3328 void setup(DragController dragController) { 3329 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3330 mDragController = dragController; 3331 3332 // hardware layers on children are enabled on startup, but should be disabled until 3333 // needed 3334 updateChildrenLayersEnabled(false); 3335 setWallpaperDimension(); 3336 } 3337 3338 /** 3339 * Called at the end of a drag which originated on the workspace. 3340 */ 3341 public void onDropCompleted(View target, DragObject d, boolean isFlingToDelete, 3342 boolean success) { 3343 if (success) { 3344 if (target != this) { 3345 if (mDragInfo != null) { 3346 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 3347 if (mDragInfo.cell instanceof DropTarget) { 3348 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 3349 } 3350 } 3351 } 3352 } else if (mDragInfo != null) { 3353 CellLayout cellLayout; 3354 if (mLauncher.isHotseatLayout(target)) { 3355 cellLayout = mLauncher.getHotseat().getLayout(); 3356 } else { 3357 cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3358 } 3359 cellLayout.onDropChild(mDragInfo.cell); 3360 } 3361 if (d.cancelled && mDragInfo.cell != null) { 3362 mDragInfo.cell.setVisibility(VISIBLE); 3363 } 3364 mDragOutline = null; 3365 mDragInfo = null; 3366 3367 // Hide the scrolling indicator after you pick up an item 3368 hideScrollingIndicator(false); 3369 } 3370 3371 void updateItemLocationsInDatabase(CellLayout cl) { 3372 int count = cl.getShortcutsAndWidgets().getChildCount(); 3373 3374 int screen = indexOfChild(cl); 3375 int container = Favorites.CONTAINER_DESKTOP; 3376 3377 if (mLauncher.isHotseatLayout(cl)) { 3378 screen = -1; 3379 container = Favorites.CONTAINER_HOTSEAT; 3380 } 3381 3382 for (int i = 0; i < count; i++) { 3383 View v = cl.getShortcutsAndWidgets().getChildAt(i); 3384 ItemInfo info = (ItemInfo) v.getTag(); 3385 // Null check required as the AllApps button doesn't have an item info 3386 if (info != null && info.requiresDbUpdate) { 3387 info.requiresDbUpdate = false; 3388 LauncherModel.modifyItemInDatabase(mLauncher, info, container, screen, info.cellX, 3389 info.cellY, info.spanX, info.spanY); 3390 } 3391 } 3392 } 3393 3394 @Override 3395 public boolean supportsFlingToDelete() { 3396 return true; 3397 } 3398 3399 @Override 3400 public void onFlingToDelete(DragObject d, int x, int y, PointF vec) { 3401 // Do nothing 3402 } 3403 3404 @Override 3405 public void onFlingToDeleteCompleted() { 3406 // Do nothing 3407 } 3408 3409 public boolean isDropEnabled() { 3410 return true; 3411 } 3412 3413 @Override 3414 protected void onRestoreInstanceState(Parcelable state) { 3415 super.onRestoreInstanceState(state); 3416 Launcher.setScreen(mCurrentPage); 3417 } 3418 3419 @Override 3420 public void scrollLeft() { 3421 if (!isSmall() && !mIsSwitchingState) { 3422 super.scrollLeft(); 3423 } 3424 Folder openFolder = getOpenFolder(); 3425 if (openFolder != null) { 3426 openFolder.completeDragExit(); 3427 } 3428 } 3429 3430 @Override 3431 public void scrollRight() { 3432 if (!isSmall() && !mIsSwitchingState) { 3433 super.scrollRight(); 3434 } 3435 Folder openFolder = getOpenFolder(); 3436 if (openFolder != null) { 3437 openFolder.completeDragExit(); 3438 } 3439 } 3440 3441 @Override 3442 public boolean onEnterScrollArea(int x, int y, int direction) { 3443 // Ignore the scroll area if we are dragging over the hot seat 3444 boolean isPortrait = !LauncherApplication.isScreenLandscape(getContext()); 3445 if (mLauncher.getHotseat() != null && isPortrait) { 3446 Rect r = new Rect(); 3447 mLauncher.getHotseat().getHitRect(r); 3448 if (r.contains(x, y)) { 3449 return false; 3450 } 3451 } 3452 3453 boolean result = false; 3454 if (!isSmall() && !mIsSwitchingState) { 3455 mInScrollArea = true; 3456 3457 final int page = getNextPage() + 3458 (direction == DragController.SCROLL_LEFT ? -1 : 1); 3459 3460 // We always want to exit the current layout to ensure parity of enter / exit 3461 setCurrentDropLayout(null); 3462 3463 if (0 <= page && page < getChildCount()) { 3464 CellLayout layout = (CellLayout) getChildAt(page); 3465 setCurrentDragOverlappingLayout(layout); 3466 3467 // Workspace is responsible for drawing the edge glow on adjacent pages, 3468 // so we need to redraw the workspace when this may have changed. 3469 invalidate(); 3470 result = true; 3471 } 3472 } 3473 return result; 3474 } 3475 3476 @Override 3477 public boolean onExitScrollArea() { 3478 boolean result = false; 3479 if (mInScrollArea) { 3480 invalidate(); 3481 CellLayout layout = getCurrentDropLayout(); 3482 setCurrentDropLayout(layout); 3483 setCurrentDragOverlappingLayout(layout); 3484 3485 result = true; 3486 mInScrollArea = false; 3487 } 3488 return result; 3489 } 3490 3491 private void onResetScrollArea() { 3492 setCurrentDragOverlappingLayout(null); 3493 mInScrollArea = false; 3494 } 3495 3496 /** 3497 * Returns a specific CellLayout 3498 */ 3499 CellLayout getParentCellLayoutForView(View v) { 3500 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3501 for (CellLayout layout : layouts) { 3502 if (layout.getShortcutsAndWidgets().indexOfChild(v) > -1) { 3503 return layout; 3504 } 3505 } 3506 return null; 3507 } 3508 3509 /** 3510 * Returns a list of all the CellLayouts in the workspace. 3511 */ 3512 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3513 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3514 int screenCount = getChildCount(); 3515 for (int screen = 0; screen < screenCount; screen++) { 3516 layouts.add(((CellLayout) getChildAt(screen))); 3517 } 3518 if (mLauncher.getHotseat() != null) { 3519 layouts.add(mLauncher.getHotseat().getLayout()); 3520 } 3521 return layouts; 3522 } 3523 3524 /** 3525 * We should only use this to search for specific children. Do not use this method to modify 3526 * ShortcutsAndWidgetsContainer directly. Includes ShortcutAndWidgetContainers from 3527 * the hotseat and workspace pages 3528 */ 3529 ArrayList<ShortcutAndWidgetContainer> getAllShortcutAndWidgetContainers() { 3530 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3531 new ArrayList<ShortcutAndWidgetContainer>(); 3532 int screenCount = getChildCount(); 3533 for (int screen = 0; screen < screenCount; screen++) { 3534 childrenLayouts.add(((CellLayout) getChildAt(screen)).getShortcutsAndWidgets()); 3535 } 3536 if (mLauncher.getHotseat() != null) { 3537 childrenLayouts.add(mLauncher.getHotseat().getLayout().getShortcutsAndWidgets()); 3538 } 3539 return childrenLayouts; 3540 } 3541 3542 public Folder getFolderForTag(Object tag) { 3543 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3544 getAllShortcutAndWidgetContainers(); 3545 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3546 int count = layout.getChildCount(); 3547 for (int i = 0; i < count; i++) { 3548 View child = layout.getChildAt(i); 3549 if (child instanceof Folder) { 3550 Folder f = (Folder) child; 3551 if (f.getInfo() == tag && f.getInfo().opened) { 3552 return f; 3553 } 3554 } 3555 } 3556 } 3557 return null; 3558 } 3559 3560 public View getViewForTag(Object tag) { 3561 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3562 getAllShortcutAndWidgetContainers(); 3563 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3564 int count = layout.getChildCount(); 3565 for (int i = 0; i < count; i++) { 3566 View child = layout.getChildAt(i); 3567 if (child.getTag() == tag) { 3568 return child; 3569 } 3570 } 3571 } 3572 return null; 3573 } 3574 3575 void clearDropTargets() { 3576 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3577 getAllShortcutAndWidgetContainers(); 3578 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3579 int childCount = layout.getChildCount(); 3580 for (int j = 0; j < childCount; j++) { 3581 View v = layout.getChildAt(j); 3582 if (v instanceof DropTarget) { 3583 mDragController.removeDropTarget((DropTarget) v); 3584 } 3585 } 3586 } 3587 } 3588 3589 void removeItems(final ArrayList<String> packages) { 3590 final HashSet<String> packageNames = new HashSet<String>(); 3591 packageNames.addAll(packages); 3592 3593 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3594 for (final CellLayout layoutParent: cellLayouts) { 3595 final ViewGroup layout = layoutParent.getShortcutsAndWidgets(); 3596 3597 // Avoid ANRs by treating each screen separately 3598 post(new Runnable() { 3599 public void run() { 3600 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3601 childrenToRemove.clear(); 3602 3603 int childCount = layout.getChildCount(); 3604 for (int j = 0; j < childCount; j++) { 3605 final View view = layout.getChildAt(j); 3606 Object tag = view.getTag(); 3607 3608 if (tag instanceof ShortcutInfo) { 3609 final ShortcutInfo info = (ShortcutInfo) tag; 3610 final Intent intent = info.intent; 3611 final ComponentName name = intent.getComponent(); 3612 3613 if (name != null) { 3614 if (packageNames.contains(name.getPackageName())) { 3615 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3616 childrenToRemove.add(view); 3617 } 3618 } 3619 } else if (tag instanceof FolderInfo) { 3620 final FolderInfo info = (FolderInfo) tag; 3621 final ArrayList<ShortcutInfo> contents = info.contents; 3622 final int contentsCount = contents.size(); 3623 final ArrayList<ShortcutInfo> appsToRemoveFromFolder = 3624 new ArrayList<ShortcutInfo>(); 3625 3626 for (int k = 0; k < contentsCount; k++) { 3627 final ShortcutInfo appInfo = contents.get(k); 3628 final Intent intent = appInfo.intent; 3629 final ComponentName name = intent.getComponent(); 3630 3631 if (name != null) { 3632 if (packageNames.contains(name.getPackageName())) { 3633 appsToRemoveFromFolder.add(appInfo); 3634 } 3635 } 3636 } 3637 for (ShortcutInfo item: appsToRemoveFromFolder) { 3638 info.remove(item); 3639 LauncherModel.deleteItemFromDatabase(mLauncher, item); 3640 } 3641 } else if (tag instanceof LauncherAppWidgetInfo) { 3642 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3643 final ComponentName provider = info.providerName; 3644 if (provider != null) { 3645 if (packageNames.contains(provider.getPackageName())) { 3646 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3647 childrenToRemove.add(view); 3648 } 3649 } 3650 } 3651 } 3652 3653 childCount = childrenToRemove.size(); 3654 for (int j = 0; j < childCount; j++) { 3655 View child = childrenToRemove.get(j); 3656 // Note: We can not remove the view directly from CellLayoutChildren as this 3657 // does not re-mark the spaces as unoccupied. 3658 layoutParent.removeViewInLayout(child); 3659 if (child instanceof DropTarget) { 3660 mDragController.removeDropTarget((DropTarget)child); 3661 } 3662 } 3663 3664 if (childCount > 0) { 3665 layout.requestLayout(); 3666 layout.invalidate(); 3667 } 3668 } 3669 }); 3670 } 3671 3672 // Clean up new-apps animation list 3673 post(new Runnable() { 3674 @Override 3675 public void run() { 3676 String spKey = LauncherApplication.getSharedPreferencesKey(); 3677 SharedPreferences sp = getContext().getSharedPreferences(spKey, 3678 Context.MODE_PRIVATE); 3679 Set<String> newApps = sp.getStringSet(InstallShortcutReceiver.NEW_APPS_LIST_KEY, 3680 null); 3681 3682 // Remove all queued items that match the same package 3683 if (newApps != null) { 3684 synchronized (newApps) { 3685 Iterator<String> iter = newApps.iterator(); 3686 while (iter.hasNext()) { 3687 try { 3688 Intent intent = Intent.parseUri(iter.next(), 0); 3689 String pn = ItemInfo.getPackageName(intent); 3690 if (packageNames.contains(pn)) { 3691 iter.remove(); 3692 } 3693 } catch (URISyntaxException e) {} 3694 } 3695 } 3696 } 3697 } 3698 }); 3699 } 3700 3701 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3702 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = getAllShortcutAndWidgetContainers(); 3703 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3704 int childCount = layout.getChildCount(); 3705 for (int j = 0; j < childCount; j++) { 3706 final View view = layout.getChildAt(j); 3707 Object tag = view.getTag(); 3708 if (tag instanceof ShortcutInfo) { 3709 ShortcutInfo info = (ShortcutInfo) tag; 3710 // We need to check for ACTION_MAIN otherwise getComponent() might 3711 // return null for some shortcuts (for instance, for shortcuts to 3712 // web pages.) 3713 final Intent intent = info.intent; 3714 final ComponentName name = intent.getComponent(); 3715 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3716 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3717 final int appCount = apps.size(); 3718 for (int k = 0; k < appCount; k++) { 3719 ApplicationInfo app = apps.get(k); 3720 if (app.componentName.equals(name)) { 3721 BubbleTextView shortcut = (BubbleTextView) view; 3722 info.updateIcon(mIconCache); 3723 info.title = app.title.toString(); 3724 shortcut.applyFromShortcutInfo(info, mIconCache); 3725 } 3726 } 3727 } 3728 } 3729 } 3730 } 3731 } 3732 3733 void moveToDefaultScreen(boolean animate) { 3734 if (!isSmall()) { 3735 if (animate) { 3736 snapToPage(mDefaultPage); 3737 } else { 3738 setCurrentPage(mDefaultPage); 3739 } 3740 } 3741 getChildAt(mDefaultPage).requestFocus(); 3742 } 3743 3744 @Override 3745 public void syncPages() { 3746 } 3747 3748 @Override 3749 public void syncPageItems(int page, boolean immediate) { 3750 } 3751 3752 @Override 3753 protected String getCurrentPageDescription() { 3754 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 3755 return String.format(getContext().getString(R.string.workspace_scroll_format), 3756 page + 1, getChildCount()); 3757 } 3758 3759 public void getLocationInDragLayer(int[] loc) { 3760 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 3761 } 3762 3763 void setFadeForOverScroll(float fade) { 3764 if (!isScrollingIndicatorEnabled()) return; 3765 3766 mOverscrollFade = fade; 3767 float reducedFade = 0.5f + 0.5f * (1 - fade); 3768 final ViewGroup parent = (ViewGroup) getParent(); 3769 final ImageView qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3770 final ImageView dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3771 final View scrollIndicator = getScrollingIndicator(); 3772 3773 cancelScrollingIndicatorAnimations(); 3774 if (qsbDivider != null) qsbDivider.setAlpha(reducedFade); 3775 if (dockDivider != null) dockDivider.setAlpha(reducedFade); 3776 scrollIndicator.setAlpha(1 - fade); 3777 } 3778} 3779