Workspace.java revision a3d30adbfd4f013260f1f5ba3a56bc9bb4a11717
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.AppWidgetManager; 28import android.appwidget.AppWidgetProviderInfo; 29import android.content.ComponentName; 30import android.content.Context; 31import android.content.Intent; 32import android.content.SharedPreferences; 33import android.content.res.Resources; 34import android.content.res.TypedArray; 35import android.graphics.Bitmap; 36import android.graphics.Camera; 37import android.graphics.Canvas; 38import android.graphics.Matrix; 39import android.graphics.Paint; 40import android.graphics.Point; 41import android.graphics.PointF; 42import android.graphics.Rect; 43import android.graphics.Region.Op; 44import android.graphics.drawable.Drawable; 45import android.os.IBinder; 46import android.os.Parcelable; 47import android.util.AttributeSet; 48import android.util.DisplayMetrics; 49import android.util.Log; 50import android.view.Display; 51import android.view.MotionEvent; 52import android.view.View; 53import android.view.ViewGroup; 54import android.view.animation.DecelerateInterpolator; 55import android.widget.ImageView; 56import android.widget.TextView; 57 58import com.android.launcher.R; 59import com.android.launcher2.FolderIcon.FolderRingAnimator; 60import com.android.launcher2.LauncherSettings.Favorites; 61 62import java.net.URISyntaxException; 63import java.util.ArrayList; 64import java.util.HashSet; 65import java.util.Iterator; 66import java.util.Set; 67 68/** 69 * The workspace is a wide area with a wallpaper and a finite number of pages. 70 * Each page contains a number of icons, folders or widgets the user can 71 * interact with. A workspace is meant to be used with a fixed width only. 72 */ 73public class Workspace extends SmoothPagedView 74 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 75 DragController.DragListener, LauncherTransitionable, ViewGroup.OnHierarchyChangeListener { 76 private static final String TAG = "Launcher.Workspace"; 77 78 // Y rotation to apply to the workspace screens 79 private static final float WORKSPACE_ROTATION = 12.5f; 80 private static final float WORKSPACE_OVERSCROLL_ROTATION = 24f; 81 private static float CAMERA_DISTANCE = 6500; 82 83 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 84 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 85 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 86 87 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 88 private static final int ADJACENT_SCREEN_DROP_DURATION = 300; 89 private static final int FLING_THRESHOLD_VELOCITY = 500; 90 91 private float mMaxDistanceForFolderCreation; 92 93 // These animators are used to fade the children's outlines 94 private ObjectAnimator mChildrenOutlineFadeInAnimation; 95 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 96 private float mChildrenOutlineAlpha = 0; 97 98 // These properties refer to the background protection gradient used for AllApps and Customize 99 private ValueAnimator mBackgroundFadeInAnimation; 100 private ValueAnimator mBackgroundFadeOutAnimation; 101 private Drawable mBackground; 102 boolean mDrawBackground = true; 103 private float mBackgroundAlpha = 0; 104 private float mOverScrollMaxBackgroundAlpha = 0.0f; 105 private int mOverScrollPageIndex = -1; 106 107 private float mWallpaperScrollRatio = 1.0f; 108 109 private final WallpaperManager mWallpaperManager; 110 private IBinder mWindowToken; 111 private static final float WALLPAPER_SCREENS_SPAN = 2f; 112 113 private int mDefaultPage; 114 115 /** 116 * CellInfo for the cell that is currently being dragged 117 */ 118 private CellLayout.CellInfo mDragInfo; 119 120 /** 121 * Target drop area calculated during last acceptDrop call. 122 */ 123 private int[] mTargetCell = new int[2]; 124 private int mDragOverX = -1; 125 private int mDragOverY = -1; 126 127 static Rect mLandscapeCellLayoutMetrics = null; 128 static Rect mPortraitCellLayoutMetrics = null; 129 130 /** 131 * The CellLayout that is currently being dragged over 132 */ 133 private CellLayout mDragTargetLayout = null; 134 /** 135 * The CellLayout that we will show as glowing 136 */ 137 private CellLayout mDragOverlappingLayout = null; 138 139 /** 140 * The CellLayout which will be dropped to 141 */ 142 private CellLayout mDropToLayout = null; 143 144 private Launcher mLauncher; 145 private IconCache mIconCache; 146 private DragController mDragController; 147 148 // These are temporary variables to prevent having to allocate a new object just to 149 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 150 private int[] mTempCell = new int[2]; 151 private int[] mTempEstimate = new int[2]; 152 private float[] mDragViewVisualCenter = new float[2]; 153 private float[] mTempDragCoordinates = new float[2]; 154 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 155 private float[] mTempDragBottomRightCoordinates = new float[2]; 156 private Matrix mTempInverseMatrix = new Matrix(); 157 158 private SpringLoadedDragController mSpringLoadedDragController; 159 private float mSpringLoadedShrinkFactor; 160 161 private static final int DEFAULT_CELL_COUNT_X = 4; 162 private static final int DEFAULT_CELL_COUNT_Y = 4; 163 164 // State variable that indicates whether the pages are small (ie when you're 165 // in all apps or customize mode) 166 167 enum State { NORMAL, SPRING_LOADED, SMALL }; 168 private State mState = State.NORMAL; 169 private boolean mIsSwitchingState = false; 170 171 boolean mAnimatingViewIntoPlace = false; 172 boolean mIsDragOccuring = false; 173 boolean mChildrenLayersEnabled = true; 174 175 /** Is the user is dragging an item near the edge of a page? */ 176 private boolean mInScrollArea = false; 177 178 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 179 private Bitmap mDragOutline = null; 180 private final Rect mTempRect = new Rect(); 181 private final int[] mTempXY = new int[2]; 182 private float mOverscrollFade = 0; 183 private boolean mOverscrollTransformsSet; 184 public static final int DRAG_BITMAP_PADDING = 2; 185 private boolean mWorkspaceFadeInAdjacentScreens; 186 187 // Camera and Matrix used to determine the final position of a neighboring CellLayout 188 private final Matrix mMatrix = new Matrix(); 189 private final Camera mCamera = new Camera(); 190 private final float mTempFloat2[] = new float[2]; 191 192 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 193 int mWallpaperWidth; 194 int mWallpaperHeight; 195 WallpaperOffsetInterpolator mWallpaperOffset; 196 boolean mUpdateWallpaperOffsetImmediately = false; 197 private Runnable mDelayedResizeRunnable; 198 private Runnable mDelayedSnapToPageRunnable; 199 private Point mDisplaySize = new Point(); 200 private boolean mIsStaticWallpaper; 201 private int mWallpaperTravelWidth; 202 203 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 204 private static final int FOLDER_CREATION_TIMEOUT = 0; 205 private static final int REORDER_TIMEOUT = 250; 206 private final Alarm mFolderCreationAlarm = new Alarm(); 207 private final Alarm mReorderAlarm = new Alarm(); 208 private FolderRingAnimator mDragFolderRingAnimator = null; 209 private FolderIcon mDragOverFolderIcon = null; 210 private boolean mCreateUserFolderOnDrop = false; 211 private boolean mAddToExistingFolderOnDrop = false; 212 private DropTarget.DragEnforcer mDragEnforcer; 213 214 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 215 private float mXDown; 216 private float mYDown; 217 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 218 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 219 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 220 221 // Relating to the animation of items being dropped externally 222 public static final int ANIMATE_INTO_POSITION_AND_DISAPPEAR = 0; 223 public static final int ANIMATE_INTO_POSITION_AND_REMAIN = 1; 224 public static final int ANIMATE_INTO_POSITION_AND_RESIZE = 2; 225 public static final int COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION = 3; 226 public static final int CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION = 4; 227 228 // Related to dragging, folder creation and reordering 229 private static final int DRAG_MODE_NONE = 0; 230 private static final int DRAG_MODE_CREATE_FOLDER = 1; 231 private static final int DRAG_MODE_ADD_TO_FOLDER = 2; 232 private static final int DRAG_MODE_REORDER = 3; 233 private int mDragMode = DRAG_MODE_NONE; 234 private int mLastReorderX = -1; 235 private int mLastReorderY = -1; 236 237 // These variables are used for storing the initial and final values during workspace animations 238 private int mSavedScrollX; 239 private float mSavedRotationY; 240 private float mSavedTranslationX; 241 private float mCurrentScaleX; 242 private float mCurrentScaleY; 243 private float mCurrentRotationY; 244 private float mCurrentTranslationX; 245 private float mCurrentTranslationY; 246 private float[] mOldTranslationXs; 247 private float[] mOldTranslationYs; 248 private float[] mOldScaleXs; 249 private float[] mOldScaleYs; 250 private float[] mOldBackgroundAlphas; 251 private float[] mOldAlphas; 252 private float[] mOldRotationYs; 253 private float[] mNewTranslationXs; 254 private float[] mNewTranslationYs; 255 private float[] mNewScaleXs; 256 private float[] mNewScaleYs; 257 private float[] mNewBackgroundAlphas; 258 private float[] mNewAlphas; 259 private float[] mNewRotationYs; 260 private float mTransitionProgress; 261 262 /** 263 * Used to inflate the Workspace from XML. 264 * 265 * @param context The application's context. 266 * @param attrs The attributes set containing the Workspace's customization values. 267 */ 268 public Workspace(Context context, AttributeSet attrs) { 269 this(context, attrs, 0); 270 } 271 272 /** 273 * Used to inflate the Workspace from XML. 274 * 275 * @param context The application's context. 276 * @param attrs The attributes set containing the Workspace's customization values. 277 * @param defStyle Unused. 278 */ 279 public Workspace(Context context, AttributeSet attrs, int defStyle) { 280 super(context, attrs, defStyle); 281 mContentIsRefreshable = false; 282 283 mDragEnforcer = new DropTarget.DragEnforcer(context); 284 // With workspace, data is available straight from the get-go 285 setDataIsReady(); 286 287 final Resources res = getResources(); 288 mWorkspaceFadeInAdjacentScreens = res.getBoolean(R.bool.config_workspaceFadeAdjacentScreens); 289 mFadeInAdjacentScreens = false; 290 mWallpaperManager = WallpaperManager.getInstance(context); 291 292 int cellCountX = DEFAULT_CELL_COUNT_X; 293 int cellCountY = DEFAULT_CELL_COUNT_Y; 294 295 TypedArray a = context.obtainStyledAttributes(attrs, 296 R.styleable.Workspace, defStyle, 0); 297 298 if (LauncherApplication.isScreenLarge()) { 299 // Determine number of rows/columns dynamically 300 // TODO: This code currently fails on tablets with an aspect ratio < 1.3. 301 // Around that ratio we should make cells the same size in portrait and 302 // landscape 303 TypedArray actionBarSizeTypedArray = 304 context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize }); 305 DisplayMetrics displayMetrics = res.getDisplayMetrics(); 306 final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); 307 final float systemBarHeight = res.getDimension(R.dimen.status_bar_height); 308 final float smallestScreenDim = res.getConfiguration().smallestScreenWidthDp * 309 displayMetrics.density; 310 311 cellCountX = 1; 312 while (CellLayout.widthInPortrait(res, cellCountX + 1) <= smallestScreenDim) { 313 cellCountX++; 314 } 315 316 cellCountY = 1; 317 while (actionBarHeight + CellLayout.heightInLandscape(res, cellCountY + 1) 318 <= smallestScreenDim - systemBarHeight) { 319 cellCountY++; 320 } 321 } 322 323 mSpringLoadedShrinkFactor = 324 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 325 326 // if the value is manually specified, use that instead 327 cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX); 328 cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY); 329 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 330 a.recycle(); 331 332 setOnHierarchyChangeListener(this); 333 334 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 335 setHapticFeedbackEnabled(false); 336 337 mLauncher = (Launcher) context; 338 initWorkspace(); 339 340 // Disable multitouch across the workspace/all apps/customize tray 341 setMotionEventSplittingEnabled(true); 342 } 343 344 // estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each 345 // dimension if unsuccessful 346 public int[] estimateItemSize(int hSpan, int vSpan, 347 ItemInfo itemInfo, boolean springLoaded) { 348 int[] size = new int[2]; 349 if (getChildCount() > 0) { 350 CellLayout cl = (CellLayout) mLauncher.getWorkspace().getChildAt(0); 351 Rect r = estimateItemPosition(cl, itemInfo, 0, 0, hSpan, vSpan); 352 size[0] = r.width(); 353 size[1] = r.height(); 354 if (springLoaded) { 355 size[0] *= mSpringLoadedShrinkFactor; 356 size[1] *= mSpringLoadedShrinkFactor; 357 } 358 return size; 359 } else { 360 size[0] = Integer.MAX_VALUE; 361 size[1] = Integer.MAX_VALUE; 362 return size; 363 } 364 } 365 public Rect estimateItemPosition(CellLayout cl, ItemInfo pendingInfo, 366 int hCell, int vCell, int hSpan, int vSpan) { 367 Rect r = new Rect(); 368 cl.cellToRect(hCell, vCell, hSpan, vSpan, r); 369 return r; 370 } 371 372 public void buildPageHardwareLayers() { 373 if (getWindowToken() != null) { 374 final int childCount = getChildCount(); 375 for (int i = 0; i < childCount; i++) { 376 CellLayout cl = (CellLayout) getChildAt(i); 377 cl.getShortcutsAndWidgets().buildLayer(); 378 } 379 } 380 } 381 382 public void onDragStart(DragSource source, Object info, int dragAction) { 383 mIsDragOccuring = true; 384 updateChildrenLayersEnabled(); 385 mLauncher.lockScreenOrientation(); 386 setChildrenBackgroundAlphaMultipliers(1f); 387 // Prevent any Un/InstallShortcutReceivers from updating the db while we are dragging 388 InstallShortcutReceiver.enableInstallQueue(); 389 UninstallShortcutReceiver.enableUninstallQueue(); 390 } 391 392 public void onDragEnd() { 393 mIsDragOccuring = false; 394 updateChildrenLayersEnabled(); 395 mLauncher.unlockScreenOrientation(false); 396 397 // Re-enable any Un/InstallShortcutReceiver and now process any queued items 398 InstallShortcutReceiver.disableAndFlushInstallQueue(getContext()); 399 UninstallShortcutReceiver.disableAndFlushUninstallQueue(getContext()); 400 } 401 402 /** 403 * Initializes various states for this workspace. 404 */ 405 protected void initWorkspace() { 406 Context context = getContext(); 407 mCurrentPage = mDefaultPage; 408 Launcher.setScreen(mCurrentPage); 409 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 410 mIconCache = app.getIconCache(); 411 setWillNotDraw(false); 412 setChildrenDrawnWithCacheEnabled(true); 413 414 final Resources res = getResources(); 415 try { 416 mBackground = res.getDrawable(R.drawable.apps_customize_bg); 417 } catch (Resources.NotFoundException e) { 418 // In this case, we will skip drawing background protection 419 } 420 421 mWallpaperOffset = new WallpaperOffsetInterpolator(); 422 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 423 display.getSize(mDisplaySize); 424 mWallpaperTravelWidth = (int) (mDisplaySize.x * 425 wallpaperTravelToScreenWidthRatio(mDisplaySize.x, mDisplaySize.y)); 426 427 mMaxDistanceForFolderCreation = (0.6f * res.getDimensionPixelSize(R.dimen.app_icon_size)); 428 mFlingThresholdVelocity = (int) (FLING_THRESHOLD_VELOCITY * mDensity); 429 } 430 431 @Override 432 protected int getScrollMode() { 433 return SmoothPagedView.X_LARGE_MODE; 434 } 435 436 @Override 437 public void onChildViewAdded(View parent, View child) { 438 if (!(child instanceof CellLayout)) { 439 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 440 } 441 CellLayout cl = ((CellLayout) child); 442 cl.setOnInterceptTouchListener(this); 443 cl.setClickable(true); 444 cl.enableHardwareLayers(); 445 cl.setContentDescription(getContext().getString( 446 R.string.workspace_description_format, getChildCount())); 447 } 448 449 @Override 450 public void onChildViewRemoved(View parent, View child) { 451 } 452 453 /** 454 * @return The open folder on the current screen, or null if there is none 455 */ 456 Folder getOpenFolder() { 457 DragLayer dragLayer = mLauncher.getDragLayer(); 458 int count = dragLayer.getChildCount(); 459 for (int i = 0; i < count; i++) { 460 View child = dragLayer.getChildAt(i); 461 if (child instanceof Folder) { 462 Folder folder = (Folder) child; 463 if (folder.getInfo().opened) 464 return folder; 465 } 466 } 467 return null; 468 } 469 470 boolean isTouchActive() { 471 return mTouchState != TOUCH_STATE_REST; 472 } 473 474 /** 475 * Adds the specified child in the specified screen. The position and dimension of 476 * the child are defined by x, y, spanX and spanY. 477 * 478 * @param child The child to add in one of the workspace's screens. 479 * @param screen The screen in which to add the child. 480 * @param x The X position of the child in the screen's grid. 481 * @param y The Y position of the child in the screen's grid. 482 * @param spanX The number of cells spanned horizontally by the child. 483 * @param spanY The number of cells spanned vertically by the child. 484 */ 485 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY) { 486 addInScreen(child, container, screen, x, y, spanX, spanY, false); 487 } 488 489 /** 490 * Adds the specified child in the specified screen. The position and dimension of 491 * the child are defined by x, y, spanX and spanY. 492 * 493 * @param child The child to add in one of the workspace's screens. 494 * @param screen The screen in which to add the child. 495 * @param x The X position of the child in the screen's grid. 496 * @param y The Y position of the child in the screen's grid. 497 * @param spanX The number of cells spanned horizontally by the child. 498 * @param spanY The number of cells spanned vertically by the child. 499 * @param insert When true, the child is inserted at the beginning of the children list. 500 */ 501 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY, 502 boolean insert) { 503 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 504 if (screen < 0 || screen >= getChildCount()) { 505 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 506 + " (was " + screen + "); skipping child"); 507 return; 508 } 509 } 510 511 final CellLayout layout; 512 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 513 layout = mLauncher.getHotseat().getLayout(); 514 child.setOnKeyListener(null); 515 516 // Hide folder title in the hotseat 517 if (child instanceof FolderIcon) { 518 ((FolderIcon) child).setTextVisible(false); 519 } 520 521 if (screen < 0) { 522 screen = mLauncher.getHotseat().getOrderInHotseat(x, y); 523 } else { 524 // Note: We do this to ensure that the hotseat is always laid out in the orientation 525 // of the hotseat in order regardless of which orientation they were added 526 x = mLauncher.getHotseat().getCellXFromOrder(screen); 527 y = mLauncher.getHotseat().getCellYFromOrder(screen); 528 } 529 } else { 530 // Show folder title if not in the hotseat 531 if (child instanceof FolderIcon) { 532 ((FolderIcon) child).setTextVisible(true); 533 } 534 535 layout = (CellLayout) getChildAt(screen); 536 child.setOnKeyListener(new IconKeyEventListener()); 537 } 538 539 LayoutParams genericLp = child.getLayoutParams(); 540 CellLayout.LayoutParams lp; 541 if (genericLp == null || !(genericLp instanceof CellLayout.LayoutParams)) { 542 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 543 } else { 544 lp = (CellLayout.LayoutParams) genericLp; 545 lp.cellX = x; 546 lp.cellY = y; 547 lp.cellHSpan = spanX; 548 lp.cellVSpan = spanY; 549 } 550 551 if (spanX < 0 && spanY < 0) { 552 lp.isLockedToGrid = false; 553 } 554 555 // Get the canonical child id to uniquely represent this view in this screen 556 int childId = LauncherModel.getCellLayoutChildId(container, screen, x, y, spanX, spanY); 557 boolean markCellsAsOccupied = !(child instanceof Folder); 558 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 559 // TODO: This branch occurs when the workspace is adding views 560 // outside of the defined grid 561 // maybe we should be deleting these items from the LauncherModel? 562 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 563 } 564 565 if (!(child instanceof Folder)) { 566 child.setHapticFeedbackEnabled(false); 567 child.setOnLongClickListener(mLongClickListener); 568 } 569 if (child instanceof DropTarget) { 570 mDragController.addDropTarget((DropTarget) child); 571 } 572 } 573 574 /** 575 * Check if the point (x, y) hits a given page. 576 */ 577 private boolean hitsPage(int index, float x, float y) { 578 final View page = getChildAt(index); 579 if (page != null) { 580 float[] localXY = { x, y }; 581 mapPointFromSelfToChild(page, localXY); 582 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 583 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 584 } 585 return false; 586 } 587 588 @Override 589 protected boolean hitsPreviousPage(float x, float y) { 590 // mNextPage is set to INVALID_PAGE whenever we are stationary. 591 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 592 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 593 594 // Only allow tap to next page on large devices, where there's significant margin outside 595 // the active workspace 596 return LauncherApplication.isScreenLarge() && hitsPage(current - 1, x, y); 597 } 598 599 @Override 600 protected boolean hitsNextPage(float x, float y) { 601 // mNextPage is set to INVALID_PAGE whenever we are stationary. 602 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 603 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 604 605 // Only allow tap to next page on large devices, where there's significant margin outside 606 // the active workspace 607 return LauncherApplication.isScreenLarge() && hitsPage(current + 1, x, y); 608 } 609 610 /** 611 * Called directly from a CellLayout (not by the framework), after we've been added as a 612 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 613 * that it should intercept touch events, which is not something that is normally supported. 614 */ 615 @Override 616 public boolean onTouch(View v, MotionEvent event) { 617 return (isSmall() || !isFinishedSwitchingState()); 618 } 619 620 public boolean isSwitchingState() { 621 return mIsSwitchingState; 622 } 623 624 /** This differs from isSwitchingState in that we take into account how far the transition 625 * has completed. */ 626 public boolean isFinishedSwitchingState() { 627 return !mIsSwitchingState || (mTransitionProgress > 0.5f); 628 } 629 630 protected void onWindowVisibilityChanged (int visibility) { 631 mLauncher.onWindowVisibilityChanged(visibility); 632 } 633 634 @Override 635 public boolean dispatchUnhandledMove(View focused, int direction) { 636 if (isSmall() || !isFinishedSwitchingState()) { 637 // when the home screens are shrunken, shouldn't allow side-scrolling 638 return false; 639 } 640 return super.dispatchUnhandledMove(focused, direction); 641 } 642 643 @Override 644 public boolean onInterceptTouchEvent(MotionEvent ev) { 645 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 646 case MotionEvent.ACTION_DOWN: 647 mXDown = ev.getX(); 648 mYDown = ev.getY(); 649 break; 650 case MotionEvent.ACTION_POINTER_UP: 651 case MotionEvent.ACTION_UP: 652 if (mTouchState == TOUCH_STATE_REST) { 653 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 654 if (!currentPage.lastDownOnOccupiedCell()) { 655 onWallpaperTap(ev); 656 } 657 } 658 } 659 return super.onInterceptTouchEvent(ev); 660 } 661 662 @Override 663 protected void determineScrollingStart(MotionEvent ev) { 664 if (isSmall()) return; 665 if (!isFinishedSwitchingState()) return; 666 667 float deltaX = Math.abs(ev.getX() - mXDown); 668 float deltaY = Math.abs(ev.getY() - mYDown); 669 670 if (Float.compare(deltaX, 0f) == 0) return; 671 672 float slope = deltaY / deltaX; 673 float theta = (float) Math.atan(slope); 674 675 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 676 cancelCurrentPageLongPress(); 677 } 678 679 if (theta > MAX_SWIPE_ANGLE) { 680 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 681 return; 682 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 683 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 684 // increase the touch slop to make it harder to begin scrolling the workspace. This 685 // results in vertically scrolling widgets to more easily. The higher the angle, the 686 // more we increase touch slop. 687 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 688 float extraRatio = (float) 689 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 690 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 691 } else { 692 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 693 super.determineScrollingStart(ev); 694 } 695 } 696 697 @Override 698 protected boolean isScrollingIndicatorEnabled() { 699 return super.isScrollingIndicatorEnabled() && (mState != State.SPRING_LOADED); 700 } 701 702 protected void onPageBeginMoving() { 703 super.onPageBeginMoving(); 704 705 if (isHardwareAccelerated()) { 706 updateChildrenLayersEnabled(); 707 } else { 708 if (mNextPage != INVALID_PAGE) { 709 // we're snapping to a particular screen 710 enableChildrenCache(mCurrentPage, mNextPage); 711 } else { 712 // this is when user is actively dragging a particular screen, they might 713 // swipe it either left or right (but we won't advance by more than one screen) 714 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 715 } 716 } 717 718 // Only show page outlines as we pan if we are on large screen 719 if (LauncherApplication.isScreenLarge()) { 720 showOutlines(); 721 mIsStaticWallpaper = mWallpaperManager.getWallpaperInfo() == null; 722 } 723 724 // If we are not fading in adjacent screens, we still need to restore the alpha in case the 725 // user scrolls while we are transitioning (should not affect dispatchDraw optimizations) 726 if (!mWorkspaceFadeInAdjacentScreens) { 727 for (int i = 0; i < getChildCount(); ++i) { 728 ((CellLayout) getPageAt(i)).setShortcutAndWidgetAlpha(1f); 729 } 730 } 731 732 // Show the scroll indicator as you pan the page 733 showScrollingIndicator(false); 734 } 735 736 protected void onPageEndMoving() { 737 super.onPageEndMoving(); 738 739 if (isHardwareAccelerated()) { 740 updateChildrenLayersEnabled(); 741 } else { 742 clearChildrenCache(); 743 } 744 745 746 if (mDragController.isDragging()) { 747 if (isSmall()) { 748 // If we are in springloaded mode, then force an event to check if the current touch 749 // is under a new page (to scroll to) 750 mDragController.forceMoveEvent(); 751 } 752 } else { 753 // If we are not mid-dragging, hide the page outlines if we are on a large screen 754 if (LauncherApplication.isScreenLarge()) { 755 hideOutlines(); 756 } 757 758 // Hide the scroll indicator as you pan the page 759 if (!mDragController.isDragging()) { 760 hideScrollingIndicator(false); 761 } 762 } 763 mOverScrollMaxBackgroundAlpha = 0.0f; 764 mOverScrollPageIndex = -1; 765 766 if (mDelayedResizeRunnable != null) { 767 mDelayedResizeRunnable.run(); 768 mDelayedResizeRunnable = null; 769 } 770 771 if (mDelayedSnapToPageRunnable != null) { 772 mDelayedSnapToPageRunnable.run(); 773 mDelayedSnapToPageRunnable = null; 774 } 775 } 776 777 @Override 778 protected void notifyPageSwitchListener() { 779 super.notifyPageSwitchListener(); 780 Launcher.setScreen(mCurrentPage); 781 }; 782 783 // As a ratio of screen height, the total distance we want the parallax effect to span 784 // horizontally 785 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 786 float aspectRatio = width / (float) height; 787 788 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 789 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 790 // We will use these two data points to extrapolate how much the wallpaper parallax effect 791 // to span (ie travel) at any aspect ratio: 792 793 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 794 final float ASPECT_RATIO_PORTRAIT = 10/16f; 795 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 796 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 797 798 // To find out the desired width at different aspect ratios, we use the following two 799 // formulas, where the coefficient on x is the aspect ratio (width/height): 800 // (16/10)x + y = 1.5 801 // (10/16)x + y = 1.2 802 // We solve for x and y and end up with a final formula: 803 final float x = 804 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 805 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 806 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 807 return x * aspectRatio + y; 808 } 809 810 // The range of scroll values for Workspace 811 private int getScrollRange() { 812 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 813 } 814 815 protected void setWallpaperDimension() { 816 DisplayMetrics displayMetrics = new DisplayMetrics(); 817 mLauncher.getWindowManager().getDefaultDisplay().getRealMetrics(displayMetrics); 818 final int maxDim = Math.max(displayMetrics.widthPixels, displayMetrics.heightPixels); 819 final int minDim = Math.min(displayMetrics.widthPixels, displayMetrics.heightPixels); 820 821 // We need to ensure that there is enough extra space in the wallpaper for the intended 822 // parallax effects 823 if (LauncherApplication.isScreenLarge()) { 824 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 825 mWallpaperHeight = maxDim; 826 } else { 827 mWallpaperWidth = Math.max((int) (minDim * WALLPAPER_SCREENS_SPAN), maxDim); 828 mWallpaperHeight = maxDim; 829 } 830 new Thread("setWallpaperDimension") { 831 public void run() { 832 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 833 } 834 }.start(); 835 } 836 837 private float wallpaperOffsetForCurrentScroll() { 838 // Set wallpaper offset steps (1 / (number of screens - 1)) 839 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f); 840 841 // For the purposes of computing the scrollRange and overScrollOffset, we assume 842 // that mLayoutScale is 1. This means that when we're in spring-loaded mode, 843 // there's no discrepancy between the wallpaper offset for a given page. 844 float layoutScale = mLayoutScale; 845 mLayoutScale = 1f; 846 int scrollRange = getScrollRange(); 847 848 // Again, we adjust the wallpaper offset to be consistent between values of mLayoutScale 849 float adjustedScrollX = Math.max(0, Math.min(getScrollX(), mMaxScrollX)); 850 adjustedScrollX *= mWallpaperScrollRatio; 851 mLayoutScale = layoutScale; 852 853 float scrollProgress = 854 adjustedScrollX / (float) scrollRange; 855 856 if (LauncherApplication.isScreenLarge() && mIsStaticWallpaper) { 857 // The wallpaper travel width is how far, from left to right, the wallpaper will move 858 // at this orientation. On tablets in portrait mode we don't move all the way to the 859 // edges of the wallpaper, or otherwise the parallax effect would be too strong. 860 int wallpaperTravelWidth = Math.min(mWallpaperTravelWidth, mWallpaperWidth); 861 862 float offsetInDips = wallpaperTravelWidth * scrollProgress + 863 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 864 float offset = offsetInDips / (float) mWallpaperWidth; 865 return offset; 866 } else { 867 return scrollProgress; 868 } 869 } 870 871 private void syncWallpaperOffsetWithScroll() { 872 final boolean enableWallpaperEffects = isHardwareAccelerated(); 873 if (enableWallpaperEffects) { 874 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 875 } 876 } 877 878 public void updateWallpaperOffsetImmediately() { 879 mUpdateWallpaperOffsetImmediately = true; 880 } 881 882 private void updateWallpaperOffsets() { 883 boolean updateNow = false; 884 boolean keepUpdating = true; 885 if (mUpdateWallpaperOffsetImmediately) { 886 updateNow = true; 887 keepUpdating = false; 888 mWallpaperOffset.jumpToFinal(); 889 mUpdateWallpaperOffsetImmediately = false; 890 } else { 891 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 892 } 893 if (updateNow) { 894 if (mWindowToken != null) { 895 mWallpaperManager.setWallpaperOffsets(mWindowToken, 896 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 897 } 898 } 899 if (keepUpdating) { 900 invalidate(); 901 } 902 } 903 904 @Override 905 protected void updateCurrentPageScroll() { 906 super.updateCurrentPageScroll(); 907 computeWallpaperScrollRatio(mCurrentPage); 908 } 909 910 @Override 911 protected void snapToPage(int whichPage) { 912 super.snapToPage(whichPage); 913 computeWallpaperScrollRatio(whichPage); 914 } 915 916 @Override 917 protected void snapToPage(int whichPage, int duration) { 918 super.snapToPage(whichPage, duration); 919 computeWallpaperScrollRatio(whichPage); 920 } 921 922 protected void snapToPage(int whichPage, Runnable r) { 923 if (mDelayedSnapToPageRunnable != null) { 924 mDelayedSnapToPageRunnable.run(); 925 } 926 mDelayedSnapToPageRunnable = r; 927 snapToPage(whichPage, SLOW_PAGE_SNAP_ANIMATION_DURATION); 928 } 929 930 private void computeWallpaperScrollRatio(int page) { 931 // Here, we determine what the desired scroll would be with and without a layout scale, 932 // and compute a ratio between the two. This allows us to adjust the wallpaper offset 933 // as though there is no layout scale. 934 float layoutScale = mLayoutScale; 935 int scaled = getChildOffset(page) - getRelativeChildOffset(page); 936 mLayoutScale = 1.0f; 937 float unscaled = getChildOffset(page) - getRelativeChildOffset(page); 938 mLayoutScale = layoutScale; 939 if (scaled > 0) { 940 mWallpaperScrollRatio = (1.0f * unscaled) / scaled; 941 } else { 942 mWallpaperScrollRatio = 1f; 943 } 944 } 945 946 class WallpaperOffsetInterpolator { 947 float mFinalHorizontalWallpaperOffset = 0.0f; 948 float mFinalVerticalWallpaperOffset = 0.5f; 949 float mHorizontalWallpaperOffset = 0.0f; 950 float mVerticalWallpaperOffset = 0.5f; 951 long mLastWallpaperOffsetUpdateTime; 952 boolean mIsMovingFast; 953 boolean mOverrideHorizontalCatchupConstant; 954 float mHorizontalCatchupConstant = 0.35f; 955 float mVerticalCatchupConstant = 0.35f; 956 957 public WallpaperOffsetInterpolator() { 958 } 959 960 public void setOverrideHorizontalCatchupConstant(boolean override) { 961 mOverrideHorizontalCatchupConstant = override; 962 } 963 964 public void setHorizontalCatchupConstant(float f) { 965 mHorizontalCatchupConstant = f; 966 } 967 968 public void setVerticalCatchupConstant(float f) { 969 mVerticalCatchupConstant = f; 970 } 971 972 public boolean computeScrollOffset() { 973 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 974 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 975 mIsMovingFast = false; 976 return false; 977 } 978 boolean isLandscape = mDisplaySize.x > mDisplaySize.y; 979 980 long currentTime = System.currentTimeMillis(); 981 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 982 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 983 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 984 985 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 986 if (!mIsMovingFast && xdiff > 0.07) { 987 mIsMovingFast = true; 988 } 989 990 float fractionToCatchUpIn1MsHorizontal; 991 if (mOverrideHorizontalCatchupConstant) { 992 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 993 } else if (mIsMovingFast) { 994 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 995 } else { 996 // slow 997 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 998 } 999 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 1000 1001 fractionToCatchUpIn1MsHorizontal /= 33f; 1002 fractionToCatchUpIn1MsVertical /= 33f; 1003 1004 final float UPDATE_THRESHOLD = 0.00001f; 1005 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 1006 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 1007 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 1008 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 1009 1010 // Don't have any lag between workspace and wallpaper on non-large devices 1011 if (!LauncherApplication.isScreenLarge() || jumpToFinalValue) { 1012 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 1013 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 1014 } else { 1015 float percentToCatchUpVertical = 1016 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 1017 float percentToCatchUpHorizontal = 1018 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 1019 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 1020 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 1021 } 1022 1023 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 1024 return true; 1025 } 1026 1027 public float getCurrX() { 1028 return mHorizontalWallpaperOffset; 1029 } 1030 1031 public float getFinalX() { 1032 return mFinalHorizontalWallpaperOffset; 1033 } 1034 1035 public float getCurrY() { 1036 return mVerticalWallpaperOffset; 1037 } 1038 1039 public float getFinalY() { 1040 return mFinalVerticalWallpaperOffset; 1041 } 1042 1043 public void setFinalX(float x) { 1044 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 1045 } 1046 1047 public void setFinalY(float y) { 1048 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 1049 } 1050 1051 public void jumpToFinal() { 1052 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 1053 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 1054 } 1055 } 1056 1057 @Override 1058 public void computeScroll() { 1059 super.computeScroll(); 1060 syncWallpaperOffsetWithScroll(); 1061 } 1062 1063 void showOutlines() { 1064 if (!isSmall() && !mIsSwitchingState) { 1065 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1066 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1067 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 1068 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 1069 mChildrenOutlineFadeInAnimation.start(); 1070 } 1071 } 1072 1073 void hideOutlines() { 1074 if (!isSmall() && !mIsSwitchingState) { 1075 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1076 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1077 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 1078 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 1079 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 1080 mChildrenOutlineFadeOutAnimation.start(); 1081 } 1082 } 1083 1084 public void showOutlinesTemporarily() { 1085 if (!mIsPageMoving && !isTouchActive()) { 1086 snapToPage(mCurrentPage); 1087 } 1088 } 1089 1090 public void setChildrenOutlineAlpha(float alpha) { 1091 mChildrenOutlineAlpha = alpha; 1092 for (int i = 0; i < getChildCount(); i++) { 1093 CellLayout cl = (CellLayout) getChildAt(i); 1094 cl.setBackgroundAlpha(alpha); 1095 } 1096 } 1097 1098 public float getChildrenOutlineAlpha() { 1099 return mChildrenOutlineAlpha; 1100 } 1101 1102 void disableBackground() { 1103 mDrawBackground = false; 1104 } 1105 void enableBackground() { 1106 mDrawBackground = true; 1107 } 1108 1109 private void animateBackgroundGradient(float finalAlpha, boolean animated) { 1110 if (mBackground == null) return; 1111 if (mBackgroundFadeInAnimation != null) { 1112 mBackgroundFadeInAnimation.cancel(); 1113 mBackgroundFadeInAnimation = null; 1114 } 1115 if (mBackgroundFadeOutAnimation != null) { 1116 mBackgroundFadeOutAnimation.cancel(); 1117 mBackgroundFadeOutAnimation = null; 1118 } 1119 float startAlpha = getBackgroundAlpha(); 1120 if (finalAlpha != startAlpha) { 1121 if (animated) { 1122 mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(startAlpha, finalAlpha); 1123 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1124 public void onAnimationUpdate(ValueAnimator animation) { 1125 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1126 } 1127 }); 1128 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1129 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1130 mBackgroundFadeOutAnimation.start(); 1131 } else { 1132 setBackgroundAlpha(finalAlpha); 1133 } 1134 } 1135 } 1136 1137 public void setBackgroundAlpha(float alpha) { 1138 if (alpha != mBackgroundAlpha) { 1139 mBackgroundAlpha = alpha; 1140 invalidate(); 1141 } 1142 } 1143 1144 public float getBackgroundAlpha() { 1145 return mBackgroundAlpha; 1146 } 1147 1148 /** 1149 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 1150 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 1151 * as being larger. This method computes what offset the rotated view should be translated 1152 * in order to minimize this perceived gap. 1153 * @param degrees Angle of the view 1154 * @param width Width of the view 1155 * @param height Height of the view 1156 * @return Offset to be used in a View.setTranslationX() call 1157 */ 1158 private float getOffsetXForRotation(float degrees, int width, int height) { 1159 mMatrix.reset(); 1160 mCamera.save(); 1161 mCamera.rotateY(Math.abs(degrees)); 1162 mCamera.getMatrix(mMatrix); 1163 mCamera.restore(); 1164 1165 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 1166 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 1167 mTempFloat2[0] = width; 1168 mTempFloat2[1] = height; 1169 mMatrix.mapPoints(mTempFloat2); 1170 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 1171 } 1172 1173 float backgroundAlphaInterpolator(float r) { 1174 float pivotA = 0.1f; 1175 float pivotB = 0.4f; 1176 if (r < pivotA) { 1177 return 0; 1178 } else if (r > pivotB) { 1179 return 1.0f; 1180 } else { 1181 return (r - pivotA)/(pivotB - pivotA); 1182 } 1183 } 1184 1185 float overScrollBackgroundAlphaInterpolator(float r) { 1186 float threshold = 0.08f; 1187 1188 if (r > mOverScrollMaxBackgroundAlpha) { 1189 mOverScrollMaxBackgroundAlpha = r; 1190 } else if (r < mOverScrollMaxBackgroundAlpha) { 1191 r = mOverScrollMaxBackgroundAlpha; 1192 } 1193 1194 return Math.min(r / threshold, 1.0f); 1195 } 1196 1197 private void updatePageAlphaValues(int screenCenter) { 1198 boolean isInOverscroll = mOverScrollX < 0 || mOverScrollX > mMaxScrollX; 1199 if (mWorkspaceFadeInAdjacentScreens && 1200 mState == State.NORMAL && 1201 !mIsSwitchingState && 1202 !isInOverscroll) { 1203 for (int i = 0; i < getChildCount(); i++) { 1204 CellLayout child = (CellLayout) getChildAt(i); 1205 if (child != null) { 1206 float scrollProgress = getScrollProgress(screenCenter, child, i); 1207 float alpha = 1 - Math.abs(scrollProgress); 1208 child.getShortcutsAndWidgets().setAlpha(alpha); 1209 if (!mIsDragOccuring) { 1210 child.setBackgroundAlphaMultiplier( 1211 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1212 } else { 1213 child.setBackgroundAlphaMultiplier(1f); 1214 } 1215 } 1216 } 1217 } 1218 } 1219 1220 private void setChildrenBackgroundAlphaMultipliers(float a) { 1221 for (int i = 0; i < getChildCount(); i++) { 1222 CellLayout child = (CellLayout) getChildAt(i); 1223 child.setBackgroundAlphaMultiplier(a); 1224 } 1225 } 1226 1227 @Override 1228 protected void screenScrolled(int screenCenter) { 1229 super.screenScrolled(screenCenter); 1230 1231 updatePageAlphaValues(screenCenter); 1232 1233 if (mOverScrollX < 0 || mOverScrollX > mMaxScrollX) { 1234 int index = mOverScrollX < 0 ? 0 : getChildCount() - 1; 1235 CellLayout cl = (CellLayout) getChildAt(index); 1236 float scrollProgress = getScrollProgress(screenCenter, cl, index); 1237 cl.setOverScrollAmount(Math.abs(scrollProgress), index == 0); 1238 float rotation = - WORKSPACE_OVERSCROLL_ROTATION * scrollProgress; 1239 cl.setRotationY(rotation); 1240 setFadeForOverScroll(Math.abs(scrollProgress)); 1241 if (!mOverscrollTransformsSet) { 1242 mOverscrollTransformsSet = true; 1243 cl.setCameraDistance(mDensity * CAMERA_DISTANCE); 1244 cl.setPivotX(cl.getMeasuredWidth() * (index == 0 ? 0.75f : 0.25f)); 1245 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1246 cl.setOverscrollTransformsDirty(true); 1247 } 1248 } else { 1249 if (mOverscrollFade != 0) { 1250 setFadeForOverScroll(0); 1251 } 1252 if (mOverscrollTransformsSet) { 1253 mOverscrollTransformsSet = false; 1254 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1255 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1256 } 1257 } 1258 } 1259 1260 @Override 1261 protected void overScroll(float amount) { 1262 acceleratedOverScroll(amount); 1263 } 1264 1265 protected void onAttachedToWindow() { 1266 super.onAttachedToWindow(); 1267 mWindowToken = getWindowToken(); 1268 computeScroll(); 1269 mDragController.setWindowToken(mWindowToken); 1270 } 1271 1272 protected void onDetachedFromWindow() { 1273 mWindowToken = null; 1274 } 1275 1276 @Override 1277 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1278 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1279 mUpdateWallpaperOffsetImmediately = true; 1280 } 1281 super.onLayout(changed, left, top, right, bottom); 1282 } 1283 1284 @Override 1285 protected void onDraw(Canvas canvas) { 1286 updateWallpaperOffsets(); 1287 1288 // Draw the background gradient if necessary 1289 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1290 int alpha = (int) (mBackgroundAlpha * 255); 1291 mBackground.setAlpha(alpha); 1292 mBackground.setBounds(getScrollX(), 0, getScrollX() + getMeasuredWidth(), 1293 getMeasuredHeight()); 1294 mBackground.draw(canvas); 1295 } 1296 1297 super.onDraw(canvas); 1298 } 1299 1300 boolean isDrawingBackgroundGradient() { 1301 return (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground); 1302 } 1303 1304 @Override 1305 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1306 if (!mLauncher.isAllAppsVisible()) { 1307 final Folder openFolder = getOpenFolder(); 1308 if (openFolder != null) { 1309 return openFolder.requestFocus(direction, previouslyFocusedRect); 1310 } else { 1311 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1312 } 1313 } 1314 return false; 1315 } 1316 1317 @Override 1318 public int getDescendantFocusability() { 1319 if (isSmall()) { 1320 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1321 } 1322 return super.getDescendantFocusability(); 1323 } 1324 1325 @Override 1326 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1327 if (!mLauncher.isAllAppsVisible()) { 1328 final Folder openFolder = getOpenFolder(); 1329 if (openFolder != null) { 1330 openFolder.addFocusables(views, direction); 1331 } else { 1332 super.addFocusables(views, direction, focusableMode); 1333 } 1334 } 1335 } 1336 1337 public boolean isSmall() { 1338 return mState == State.SMALL || mState == State.SPRING_LOADED; 1339 } 1340 1341 void enableChildrenCache(int fromPage, int toPage) { 1342 if (fromPage > toPage) { 1343 final int temp = fromPage; 1344 fromPage = toPage; 1345 toPage = temp; 1346 } 1347 1348 final int screenCount = getChildCount(); 1349 1350 fromPage = Math.max(fromPage, 0); 1351 toPage = Math.min(toPage, screenCount - 1); 1352 1353 for (int i = fromPage; i <= toPage; i++) { 1354 final CellLayout layout = (CellLayout) getChildAt(i); 1355 layout.setChildrenDrawnWithCacheEnabled(true); 1356 layout.setChildrenDrawingCacheEnabled(true); 1357 } 1358 } 1359 1360 void clearChildrenCache() { 1361 final int screenCount = getChildCount(); 1362 for (int i = 0; i < screenCount; i++) { 1363 final CellLayout layout = (CellLayout) getChildAt(i); 1364 layout.setChildrenDrawnWithCacheEnabled(false); 1365 // In software mode, we don't want the items to continue to be drawn into bitmaps 1366 if (!isHardwareAccelerated()) { 1367 layout.setChildrenDrawingCacheEnabled(false); 1368 } 1369 } 1370 } 1371 1372 private void updateChildrenLayersEnabled() { 1373 boolean small = mState == State.SMALL || mIsSwitchingState; 1374 boolean enableChildrenLayers = small || mAnimatingViewIntoPlace || isPageMoving(); 1375 1376 if (enableChildrenLayers != mChildrenLayersEnabled) { 1377 mChildrenLayersEnabled = enableChildrenLayers; 1378 for (int i = 0; i < getPageCount(); i++) { 1379 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(mChildrenLayersEnabled); 1380 } 1381 } 1382 } 1383 1384 protected void onWallpaperTap(MotionEvent ev) { 1385 final int[] position = mTempCell; 1386 getLocationOnScreen(position); 1387 1388 int pointerIndex = ev.getActionIndex(); 1389 position[0] += (int) ev.getX(pointerIndex); 1390 position[1] += (int) ev.getY(pointerIndex); 1391 1392 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1393 ev.getAction() == MotionEvent.ACTION_UP 1394 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1395 position[0], position[1], 0, null); 1396 } 1397 1398 /* 1399 * This interpolator emulates the rate at which the perceived scale of an object changes 1400 * as its distance from a camera increases. When this interpolator is applied to a scale 1401 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1402 * from the camera. 1403 */ 1404 static class ZInterpolator implements TimeInterpolator { 1405 private float focalLength; 1406 1407 public ZInterpolator(float foc) { 1408 focalLength = foc; 1409 } 1410 1411 public float getInterpolation(float input) { 1412 return (1.0f - focalLength / (focalLength + input)) / 1413 (1.0f - focalLength / (focalLength + 1.0f)); 1414 } 1415 } 1416 1417 /* 1418 * The exact reverse of ZInterpolator. 1419 */ 1420 static class InverseZInterpolator implements TimeInterpolator { 1421 private ZInterpolator zInterpolator; 1422 public InverseZInterpolator(float foc) { 1423 zInterpolator = new ZInterpolator(foc); 1424 } 1425 public float getInterpolation(float input) { 1426 return 1 - zInterpolator.getInterpolation(1 - input); 1427 } 1428 } 1429 1430 /* 1431 * ZInterpolator compounded with an ease-out. 1432 */ 1433 static class ZoomOutInterpolator implements TimeInterpolator { 1434 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(0.75f); 1435 private final ZInterpolator zInterpolator = new ZInterpolator(0.13f); 1436 1437 public float getInterpolation(float input) { 1438 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1439 } 1440 } 1441 1442 /* 1443 * InvereZInterpolator compounded with an ease-out. 1444 */ 1445 static class ZoomInInterpolator implements TimeInterpolator { 1446 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1447 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1448 1449 public float getInterpolation(float input) { 1450 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1451 } 1452 } 1453 1454 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1455 1456 /* 1457 * 1458 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1459 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1460 * 1461 * These methods mark the appropriate pages as accepting drops (which alters their visual 1462 * appearance). 1463 * 1464 */ 1465 public void onDragStartedWithItem(View v) { 1466 final Canvas canvas = new Canvas(); 1467 1468 // The outline is used to visualize where the item will land if dropped 1469 mDragOutline = createDragOutline(v, canvas, DRAG_BITMAP_PADDING); 1470 } 1471 1472 public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, Paint alphaClipPaint) { 1473 final Canvas canvas = new Canvas(); 1474 1475 int[] size = estimateItemSize(info.spanX, info.spanY, info, false); 1476 1477 // The outline is used to visualize where the item will land if dropped 1478 mDragOutline = createDragOutline(b, canvas, DRAG_BITMAP_PADDING, size[0], 1479 size[1], alphaClipPaint); 1480 } 1481 1482 public void exitWidgetResizeMode() { 1483 DragLayer dragLayer = mLauncher.getDragLayer(); 1484 dragLayer.clearAllResizeFrames(); 1485 } 1486 1487 private void initAnimationArrays() { 1488 final int childCount = getChildCount(); 1489 if (mOldTranslationXs != null) return; 1490 mOldTranslationXs = new float[childCount]; 1491 mOldTranslationYs = new float[childCount]; 1492 mOldScaleXs = new float[childCount]; 1493 mOldScaleYs = new float[childCount]; 1494 mOldBackgroundAlphas = new float[childCount]; 1495 mOldAlphas = new float[childCount]; 1496 mOldRotationYs = new float[childCount]; 1497 mNewTranslationXs = new float[childCount]; 1498 mNewTranslationYs = new float[childCount]; 1499 mNewScaleXs = new float[childCount]; 1500 mNewScaleYs = new float[childCount]; 1501 mNewBackgroundAlphas = new float[childCount]; 1502 mNewAlphas = new float[childCount]; 1503 mNewRotationYs = new float[childCount]; 1504 } 1505 1506 Animator getChangeStateAnimation(final State state, boolean animated) { 1507 return getChangeStateAnimation(state, animated, 0); 1508 } 1509 1510 Animator getChangeStateAnimation(final State state, boolean animated, int delay) { 1511 if (mState == state) { 1512 return null; 1513 } 1514 1515 // Initialize animation arrays for the first time if necessary 1516 initAnimationArrays(); 1517 1518 AnimatorSet anim = animated ? new AnimatorSet() : null; 1519 1520 // Stop any scrolling, move to the current page right away 1521 setCurrentPage(getNextPage()); 1522 1523 final State oldState = mState; 1524 final boolean oldStateIsNormal = (oldState == State.NORMAL); 1525 final boolean oldStateIsSpringLoaded = (oldState == State.SPRING_LOADED); 1526 final boolean oldStateIsSmall = (oldState == State.SMALL); 1527 mState = state; 1528 final boolean stateIsNormal = (state == State.NORMAL); 1529 final boolean stateIsSpringLoaded = (state == State.SPRING_LOADED); 1530 final boolean stateIsSmall = (state == State.SMALL); 1531 float finalScaleFactor = 1.0f; 1532 float finalBackgroundAlpha = stateIsSpringLoaded ? 1.0f : 0f; 1533 float translationX = 0; 1534 float translationY = 0; 1535 boolean zoomIn = true; 1536 1537 if (state != State.NORMAL) { 1538 finalScaleFactor = mSpringLoadedShrinkFactor - (stateIsSmall ? 0.1f : 0); 1539 if (oldStateIsNormal && stateIsSmall) { 1540 zoomIn = false; 1541 setLayoutScale(finalScaleFactor); 1542 updateChildrenLayersEnabled(); 1543 } else { 1544 finalBackgroundAlpha = 1.0f; 1545 setLayoutScale(finalScaleFactor); 1546 } 1547 } else { 1548 setLayoutScale(1.0f); 1549 } 1550 1551 final int duration = zoomIn ? 1552 getResources().getInteger(R.integer.config_workspaceUnshrinkTime) : 1553 getResources().getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1554 for (int i = 0; i < getChildCount(); i++) { 1555 final CellLayout cl = (CellLayout) getChildAt(i); 1556 float finalAlpha = (!mWorkspaceFadeInAdjacentScreens || stateIsSpringLoaded || 1557 (i == mCurrentPage)) ? 1f : 0f; 1558 float currentAlpha = cl.getShortcutsAndWidgets().getAlpha(); 1559 float initialAlpha = currentAlpha; 1560 1561 // Determine the pages alpha during the state transition 1562 if ((oldStateIsSmall && stateIsNormal) || 1563 (oldStateIsNormal && stateIsSmall)) { 1564 // To/from workspace - only show the current page unless the transition is not 1565 // animated and the animation end callback below doesn't run; 1566 // or, if we're in spring-loaded mode 1567 if (i == mCurrentPage || !animated || oldStateIsSpringLoaded) { 1568 finalAlpha = 1f; 1569 } else { 1570 initialAlpha = 0f; 1571 finalAlpha = 0f; 1572 } 1573 } 1574 1575 mOldAlphas[i] = initialAlpha; 1576 mNewAlphas[i] = finalAlpha; 1577 if (animated) { 1578 mOldTranslationXs[i] = cl.getTranslationX(); 1579 mOldTranslationYs[i] = cl.getTranslationY(); 1580 mOldScaleXs[i] = cl.getScaleX(); 1581 mOldScaleYs[i] = cl.getScaleY(); 1582 mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1583 1584 mNewTranslationXs[i] = translationX; 1585 mNewTranslationYs[i] = translationY; 1586 mNewScaleXs[i] = finalScaleFactor; 1587 mNewScaleYs[i] = finalScaleFactor; 1588 mNewBackgroundAlphas[i] = finalBackgroundAlpha; 1589 } else { 1590 cl.setTranslationX(translationX); 1591 cl.setTranslationY(translationY); 1592 cl.setScaleX(finalScaleFactor); 1593 cl.setScaleY(finalScaleFactor); 1594 cl.setBackgroundAlpha(finalBackgroundAlpha); 1595 cl.setShortcutAndWidgetAlpha(finalAlpha); 1596 } 1597 } 1598 1599 if (animated) { 1600 for (int index = 0; index < getChildCount(); index++) { 1601 final int i = index; 1602 final CellLayout cl = (CellLayout) getChildAt(i); 1603 float currentAlpha = cl.getShortcutsAndWidgets().getAlpha(); 1604 if (mOldAlphas[i] == 0 && mNewAlphas[i] == 0) { 1605 cl.setTranslationX(mNewTranslationXs[i]); 1606 cl.setTranslationY(mNewTranslationYs[i]); 1607 cl.setScaleX(mNewScaleXs[i]); 1608 cl.setScaleY(mNewScaleYs[i]); 1609 cl.setBackgroundAlpha(mNewBackgroundAlphas[i]); 1610 cl.setShortcutAndWidgetAlpha(mNewAlphas[i]); 1611 cl.setRotationY(mNewRotationYs[i]); 1612 } else { 1613 LauncherViewPropertyAnimator a = new LauncherViewPropertyAnimator(cl); 1614 a.translationX(mNewTranslationXs[i]) 1615 .translationY(mNewTranslationYs[i]) 1616 .scaleX(mNewScaleXs[i]) 1617 .scaleY(mNewScaleYs[i]) 1618 .setDuration(duration) 1619 .setInterpolator(mZoomInInterpolator); 1620 anim.play(a); 1621 1622 if (mOldAlphas[i] != mNewAlphas[i] || currentAlpha != mNewAlphas[i]) { 1623 LauncherViewPropertyAnimator alphaAnim = 1624 new LauncherViewPropertyAnimator(cl.getShortcutsAndWidgets()); 1625 alphaAnim.alpha(mNewAlphas[i]) 1626 .setDuration(duration) 1627 .setInterpolator(mZoomInInterpolator); 1628 anim.play(alphaAnim); 1629 } 1630 if (mOldBackgroundAlphas[i] != 0 || 1631 mNewBackgroundAlphas[i] != 0) { 1632 ValueAnimator bgAnim = ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1633 bgAnim.setInterpolator(mZoomInInterpolator); 1634 bgAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1635 public void onAnimationUpdate(float a, float b) { 1636 cl.setBackgroundAlpha( 1637 a * mOldBackgroundAlphas[i] + 1638 b * mNewBackgroundAlphas[i]); 1639 } 1640 }); 1641 anim.play(bgAnim); 1642 } 1643 } 1644 } 1645 buildPageHardwareLayers(); 1646 anim.setStartDelay(delay); 1647 } 1648 1649 if (stateIsSpringLoaded) { 1650 // Right now we're covered by Apps Customize 1651 // Show the background gradient immediately, so the gradient will 1652 // be showing once AppsCustomize disappears 1653 animateBackgroundGradient(getResources().getInteger( 1654 R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, false); 1655 } else { 1656 // Fade the background gradient away 1657 animateBackgroundGradient(0f, true); 1658 } 1659 return anim; 1660 } 1661 1662 @Override 1663 public void onLauncherTransitionPrepare(Launcher l, boolean animated, boolean toWorkspace) { 1664 mIsSwitchingState = true; 1665 cancelScrollingIndicatorAnimations(); 1666 } 1667 1668 @Override 1669 public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) { 1670 } 1671 1672 @Override 1673 public void onLauncherTransitionStep(Launcher l, float t) { 1674 mTransitionProgress = t; 1675 } 1676 1677 @Override 1678 public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) { 1679 mIsSwitchingState = false; 1680 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 1681 updateChildrenLayersEnabled(); 1682 // The code in getChangeStateAnimation to determine initialAlpha and finalAlpha will ensure 1683 // ensure that only the current page is visible during (and subsequently, after) the 1684 // transition animation. If fade adjacent pages is disabled, then re-enable the page 1685 // visibility after the transition animation. 1686 if (!mWorkspaceFadeInAdjacentScreens) { 1687 for (int i = 0; i < getChildCount(); i++) { 1688 final CellLayout cl = (CellLayout) getChildAt(i); 1689 cl.setShortcutAndWidgetAlpha(1f); 1690 } 1691 } 1692 } 1693 1694 @Override 1695 public View getContent() { 1696 return this; 1697 } 1698 1699 /** 1700 * Draw the View v into the given Canvas. 1701 * 1702 * @param v the view to draw 1703 * @param destCanvas the canvas to draw on 1704 * @param padding the horizontal and vertical padding to use when drawing 1705 */ 1706 private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { 1707 final Rect clipRect = mTempRect; 1708 v.getDrawingRect(clipRect); 1709 1710 boolean textVisible = false; 1711 1712 destCanvas.save(); 1713 if (v instanceof TextView && pruneToDrawable) { 1714 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1715 clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); 1716 destCanvas.translate(padding / 2, padding / 2); 1717 d.draw(destCanvas); 1718 } else { 1719 if (v instanceof FolderIcon) { 1720 // For FolderIcons the text can bleed into the icon area, and so we need to 1721 // hide the text completely (which can't be achieved by clipping). 1722 if (((FolderIcon) v).getTextVisible()) { 1723 ((FolderIcon) v).setTextVisible(false); 1724 textVisible = true; 1725 } 1726 } else if (v instanceof BubbleTextView) { 1727 final BubbleTextView tv = (BubbleTextView) v; 1728 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1729 tv.getLayout().getLineTop(0); 1730 } else if (v instanceof TextView) { 1731 final TextView tv = (TextView) v; 1732 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1733 tv.getLayout().getLineTop(0); 1734 } 1735 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1736 destCanvas.clipRect(clipRect, Op.REPLACE); 1737 v.draw(destCanvas); 1738 1739 // Restore text visibility of FolderIcon if necessary 1740 if (textVisible) { 1741 ((FolderIcon) v).setTextVisible(true); 1742 } 1743 } 1744 destCanvas.restore(); 1745 } 1746 1747 /** 1748 * Returns a new bitmap to show when the given View is being dragged around. 1749 * Responsibility for the bitmap is transferred to the caller. 1750 */ 1751 public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1752 Bitmap b; 1753 1754 if (v instanceof TextView) { 1755 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1756 b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, 1757 d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); 1758 } else { 1759 b = Bitmap.createBitmap( 1760 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1761 } 1762 1763 canvas.setBitmap(b); 1764 drawDragView(v, canvas, padding, true); 1765 canvas.setBitmap(null); 1766 1767 return b; 1768 } 1769 1770 /** 1771 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1772 * Responsibility for the bitmap is transferred to the caller. 1773 */ 1774 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1775 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1776 final Bitmap b = Bitmap.createBitmap( 1777 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1778 1779 canvas.setBitmap(b); 1780 drawDragView(v, canvas, padding, true); 1781 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1782 canvas.setBitmap(null); 1783 return b; 1784 } 1785 1786 /** 1787 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1788 * Responsibility for the bitmap is transferred to the caller. 1789 */ 1790 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h, 1791 Paint alphaClipPaint) { 1792 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1793 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1794 canvas.setBitmap(b); 1795 1796 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 1797 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 1798 (h - padding) / (float) orig.getHeight()); 1799 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 1800 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 1801 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 1802 1803 // center the image 1804 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 1805 1806 canvas.drawBitmap(orig, src, dst, null); 1807 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor, 1808 alphaClipPaint); 1809 canvas.setBitmap(null); 1810 1811 return b; 1812 } 1813 1814 void startDrag(CellLayout.CellInfo cellInfo) { 1815 View child = cellInfo.cell; 1816 1817 // Make sure the drag was started by a long press as opposed to a long click. 1818 if (!child.isInTouchMode()) { 1819 return; 1820 } 1821 1822 mDragInfo = cellInfo; 1823 child.setVisibility(INVISIBLE); 1824 CellLayout layout = (CellLayout) child.getParent().getParent(); 1825 layout.prepareChildForDrag(child); 1826 1827 child.clearFocus(); 1828 child.setPressed(false); 1829 1830 final Canvas canvas = new Canvas(); 1831 1832 // The outline is used to visualize where the item will land if dropped 1833 mDragOutline = createDragOutline(child, canvas, DRAG_BITMAP_PADDING); 1834 beginDragShared(child, this); 1835 } 1836 1837 public void beginDragShared(View child, DragSource source) { 1838 Resources r = getResources(); 1839 1840 // The drag bitmap follows the touch point around on the screen 1841 final Bitmap b = createDragBitmap(child, new Canvas(), DRAG_BITMAP_PADDING); 1842 1843 final int bmpWidth = b.getWidth(); 1844 final int bmpHeight = b.getHeight(); 1845 1846 mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 1847 int dragLayerX = 1848 Math.round(mTempXY[0] - (bmpWidth - child.getScaleX() * child.getWidth()) / 2); 1849 int dragLayerY = 1850 Math.round(mTempXY[1] - (bmpHeight - child.getScaleY() * bmpHeight) / 2 1851 - DRAG_BITMAP_PADDING / 2); 1852 1853 Point dragVisualizeOffset = null; 1854 Rect dragRect = null; 1855 if (child instanceof BubbleTextView || child instanceof PagedViewIcon) { 1856 int iconSize = r.getDimensionPixelSize(R.dimen.app_icon_size); 1857 int iconPaddingTop = r.getDimensionPixelSize(R.dimen.app_icon_padding_top); 1858 int top = child.getPaddingTop(); 1859 int left = (bmpWidth - iconSize) / 2; 1860 int right = left + iconSize; 1861 int bottom = top + iconSize; 1862 dragLayerY += top; 1863 // Note: The drag region is used to calculate drag layer offsets, but the 1864 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 1865 dragVisualizeOffset = new Point(-DRAG_BITMAP_PADDING / 2, 1866 iconPaddingTop - DRAG_BITMAP_PADDING / 2); 1867 dragRect = new Rect(left, top, right, bottom); 1868 } else if (child instanceof FolderIcon) { 1869 int previewSize = r.getDimensionPixelSize(R.dimen.folder_preview_size); 1870 dragRect = new Rect(0, 0, child.getWidth(), previewSize); 1871 } 1872 1873 // Clear the pressed state if necessary 1874 if (child instanceof BubbleTextView) { 1875 BubbleTextView icon = (BubbleTextView) child; 1876 icon.clearPressedOrFocusedBackground(); 1877 } 1878 1879 mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 1880 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect, child.getScaleX()); 1881 b.recycle(); 1882 1883 // Show the scrolling indicator when you pick up an item 1884 showScrollingIndicator(false); 1885 } 1886 1887 void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, int screen, 1888 int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { 1889 View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); 1890 1891 final int[] cellXY = new int[2]; 1892 target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1893 addInScreen(view, container, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1894 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, cellXY[0], 1895 cellXY[1]); 1896 } 1897 1898 public boolean transitionStateShouldAllowDrop() { 1899 return ((!isSwitchingState() || mTransitionProgress > 0.5f) && mState != State.SMALL); 1900 } 1901 1902 /** 1903 * {@inheritDoc} 1904 */ 1905 public boolean acceptDrop(DragObject d) { 1906 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1907 CellLayout dropTargetLayout = mDropToLayout; 1908 if (d.dragSource != this) { 1909 // Don't accept the drop if we're not over a screen at time of drop 1910 if (dropTargetLayout == null) { 1911 return false; 1912 } 1913 if (!transitionStateShouldAllowDrop()) return false; 1914 1915 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 1916 d.dragView, mDragViewVisualCenter); 1917 1918 // We want the point to be mapped to the dragTarget. 1919 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 1920 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 1921 } else { 1922 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 1923 } 1924 1925 int spanX = 1; 1926 int spanY = 1; 1927 if (mDragInfo != null) { 1928 final CellLayout.CellInfo dragCellInfo = mDragInfo; 1929 spanX = dragCellInfo.spanX; 1930 spanY = dragCellInfo.spanY; 1931 } else { 1932 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 1933 spanX = dragInfo.spanX; 1934 spanY = dragInfo.spanY; 1935 } 1936 1937 int minSpanX = spanX; 1938 int minSpanY = spanY; 1939 if (d.dragInfo instanceof PendingAddWidgetInfo) { 1940 minSpanX = ((PendingAddWidgetInfo) d.dragInfo).minSpanX; 1941 minSpanY = ((PendingAddWidgetInfo) d.dragInfo).minSpanY; 1942 } 1943 1944 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 1945 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, dropTargetLayout, 1946 mTargetCell); 1947 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 1948 mDragViewVisualCenter[1], mTargetCell); 1949 if (willCreateUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, 1950 mTargetCell, distance, true)) { 1951 return true; 1952 } 1953 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, 1954 mTargetCell, distance)) { 1955 return true; 1956 } 1957 1958 int[] resultSpan = new int[2]; 1959 mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], 1960 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 1961 null, mTargetCell, resultSpan, CellLayout.MODE_ACCEPT_DROP); 1962 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 1963 1964 // Don't accept the drop if there's no room for the item 1965 if (!foundCell) { 1966 // Don't show the message if we are dropping on the AllApps button and the hotseat 1967 // is full 1968 boolean isHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 1969 if (mTargetCell != null && isHotseat) { 1970 Hotseat hotseat = mLauncher.getHotseat(); 1971 if (hotseat.isAllAppsButtonRank( 1972 hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { 1973 return false; 1974 } 1975 } 1976 1977 mLauncher.showOutOfSpaceMessage(isHotseat); 1978 return false; 1979 } 1980 } 1981 return true; 1982 } 1983 1984 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, float 1985 distance, boolean considerTimeout) { 1986 if (distance > mMaxDistanceForFolderCreation) return false; 1987 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 1988 1989 if (dropOverView != null) { 1990 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 1991 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 1992 return false; 1993 } 1994 } 1995 1996 boolean hasntMoved = false; 1997 if (mDragInfo != null) { 1998 hasntMoved = dropOverView == mDragInfo.cell; 1999 } 2000 2001 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2002 return false; 2003 } 2004 2005 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2006 boolean willBecomeShortcut = 2007 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2008 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2009 2010 return (aboveShortcut && willBecomeShortcut); 2011 } 2012 2013 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell, 2014 float distance) { 2015 if (distance > mMaxDistanceForFolderCreation) return false; 2016 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2017 2018 if (dropOverView != null) { 2019 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2020 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2021 return false; 2022 } 2023 } 2024 2025 if (dropOverView instanceof FolderIcon) { 2026 FolderIcon fi = (FolderIcon) dropOverView; 2027 if (fi.acceptDrop(dragInfo)) { 2028 return true; 2029 } 2030 } 2031 return false; 2032 } 2033 2034 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2035 int[] targetCell, float distance, boolean external, DragView dragView, 2036 Runnable postAnimationRunnable) { 2037 if (distance > mMaxDistanceForFolderCreation) return false; 2038 View v = target.getChildAt(targetCell[0], targetCell[1]); 2039 2040 boolean hasntMoved = false; 2041 if (mDragInfo != null) { 2042 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2043 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2044 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2045 } 2046 2047 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2048 mCreateUserFolderOnDrop = false; 2049 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 2050 2051 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2052 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2053 2054 if (aboveShortcut && willBecomeShortcut) { 2055 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2056 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2057 // if the drag started here, we need to remove it from the workspace 2058 if (!external) { 2059 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2060 } 2061 2062 Rect folderLocation = new Rect(); 2063 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2064 target.removeView(v); 2065 2066 FolderIcon fi = 2067 mLauncher.addFolder(target, container, screen, targetCell[0], targetCell[1]); 2068 destInfo.cellX = -1; 2069 destInfo.cellY = -1; 2070 sourceInfo.cellX = -1; 2071 sourceInfo.cellY = -1; 2072 2073 // If the dragView is null, we can't animate 2074 boolean animate = dragView != null; 2075 if (animate) { 2076 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2077 postAnimationRunnable); 2078 } else { 2079 fi.addItem(destInfo); 2080 fi.addItem(sourceInfo); 2081 } 2082 return true; 2083 } 2084 return false; 2085 } 2086 2087 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2088 float distance, DragObject d, boolean external) { 2089 if (distance > mMaxDistanceForFolderCreation) return false; 2090 2091 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2092 if (!mAddToExistingFolderOnDrop) return false; 2093 mAddToExistingFolderOnDrop = false; 2094 2095 if (dropOverView instanceof FolderIcon) { 2096 FolderIcon fi = (FolderIcon) dropOverView; 2097 if (fi.acceptDrop(d.dragInfo)) { 2098 fi.onDrop(d); 2099 2100 // if the drag started here, we need to remove it from the workspace 2101 if (!external) { 2102 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2103 } 2104 return true; 2105 } 2106 } 2107 return false; 2108 } 2109 2110 public void onDrop(final DragObject d) { 2111 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2112 mDragViewVisualCenter); 2113 2114 CellLayout dropTargetLayout = mDropToLayout; 2115 2116 // We want the point to be mapped to the dragTarget. 2117 if (dropTargetLayout != null) { 2118 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 2119 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2120 } else { 2121 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 2122 } 2123 } 2124 2125 int snapScreen = -1; 2126 boolean resizeOnDrop = false; 2127 if (d.dragSource != this) { 2128 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2129 (int) mDragViewVisualCenter[1] }; 2130 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2131 } else if (mDragInfo != null) { 2132 final View cell = mDragInfo.cell; 2133 2134 Runnable resizeRunnable = null; 2135 if (dropTargetLayout != null) { 2136 // Move internally 2137 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2138 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2139 long container = hasMovedIntoHotseat ? 2140 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2141 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2142 int screen = (mTargetCell[0] < 0) ? 2143 mDragInfo.screen : indexOfChild(dropTargetLayout); 2144 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2145 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2146 // First we find the cell nearest to point at which the item is 2147 // dropped, without any consideration to whether there is an item there. 2148 2149 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2150 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2151 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2152 mDragViewVisualCenter[1], mTargetCell); 2153 2154 // If the item being dropped is a shortcut and the nearest drop 2155 // cell also contains a shortcut, then create a folder with the two shortcuts. 2156 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2157 dropTargetLayout, mTargetCell, distance, false, d.dragView, null)) { 2158 return; 2159 } 2160 2161 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, 2162 distance, d, false)) { 2163 return; 2164 } 2165 2166 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2167 // we need to find the nearest cell location that is vacant 2168 ItemInfo item = (ItemInfo) d.dragInfo; 2169 int minSpanX = item.spanX; 2170 int minSpanY = item.spanY; 2171 if (item.minSpanX > 0 && item.minSpanY > 0) { 2172 minSpanX = item.minSpanX; 2173 minSpanY = item.minSpanY; 2174 } 2175 2176 int[] resultSpan = new int[2]; 2177 mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], 2178 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, cell, 2179 mTargetCell, resultSpan, CellLayout.MODE_ON_DROP); 2180 2181 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2182 if (foundCell && (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY)) { 2183 resizeOnDrop = true; 2184 item.spanX = resultSpan[0]; 2185 item.spanY = resultSpan[1]; 2186 } 2187 2188 if (mCurrentPage != screen && !hasMovedIntoHotseat) { 2189 snapScreen = screen; 2190 snapToPage(screen); 2191 } 2192 2193 if (foundCell) { 2194 final ItemInfo info = (ItemInfo) cell.getTag(); 2195 if (hasMovedLayouts) { 2196 // Reparent the view 2197 getParentCellLayoutForView(cell).removeView(cell); 2198 addInScreen(cell, container, screen, mTargetCell[0], mTargetCell[1], 2199 info.spanX, info.spanY); 2200 } 2201 2202 // update the item's position after drop 2203 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2204 lp.cellX = lp.tmpCellX = mTargetCell[0]; 2205 lp.cellY = lp.tmpCellY = mTargetCell[1]; 2206 lp.cellHSpan = item.spanX; 2207 lp.cellVSpan = item.spanY; 2208 lp.isLockedToGrid = true; 2209 cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screen, 2210 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2211 2212 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2213 cell instanceof LauncherAppWidgetHostView) { 2214 final CellLayout cellLayout = dropTargetLayout; 2215 // We post this call so that the widget has a chance to be placed 2216 // in its final location 2217 2218 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2219 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2220 if (pinfo != null && 2221 pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2222 final Runnable addResizeFrame = new Runnable() { 2223 public void run() { 2224 DragLayer dragLayer = mLauncher.getDragLayer(); 2225 dragLayer.addResizeFrame(info, hostView, cellLayout); 2226 } 2227 }; 2228 resizeRunnable = (new Runnable() { 2229 public void run() { 2230 if (!isPageMoving()) { 2231 addResizeFrame.run(); 2232 } else { 2233 mDelayedResizeRunnable = addResizeFrame; 2234 } 2235 } 2236 }); 2237 } 2238 } 2239 2240 LauncherModel.moveItemInDatabase(mLauncher, info, container, screen, lp.cellX, 2241 lp.cellY); 2242 } else { 2243 // If we can't find a drop location, we return the item to its original position 2244 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2245 mTargetCell[0] = lp.cellX; 2246 mTargetCell[1] = lp.cellY; 2247 } 2248 } 2249 2250 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2251 final Runnable finalResizeRunnable = resizeRunnable; 2252 // Prepare it to be animated into its new position 2253 // This must be called after the view has been re-parented 2254 final Runnable onCompleteRunnable = new Runnable() { 2255 @Override 2256 public void run() { 2257 mAnimatingViewIntoPlace = false; 2258 updateChildrenLayersEnabled(); 2259 if (finalResizeRunnable != null) { 2260 finalResizeRunnable.run(); 2261 } 2262 } 2263 }; 2264 mAnimatingViewIntoPlace = true; 2265 if (d.dragView.hasDrawn()) { 2266 final ItemInfo info = (ItemInfo) cell.getTag(); 2267 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET) { 2268 int animationType = resizeOnDrop ? ANIMATE_INTO_POSITION_AND_RESIZE : 2269 ANIMATE_INTO_POSITION_AND_DISAPPEAR; 2270 animateWidgetDrop(info, parent, d.dragView, 2271 onCompleteRunnable, animationType, cell, false); 2272 } else { 2273 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2274 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2275 onCompleteRunnable, this); 2276 } 2277 } else { 2278 d.deferDragViewCleanupPostAnimation = false; 2279 cell.setVisibility(VISIBLE); 2280 } 2281 parent.onDropChild(cell); 2282 } 2283 } 2284 2285 public void setFinalScrollForPageChange(int screen) { 2286 if (screen >= 0) { 2287 mSavedScrollX = getScrollX(); 2288 CellLayout cl = (CellLayout) getChildAt(screen); 2289 mSavedTranslationX = cl.getTranslationX(); 2290 mSavedRotationY = cl.getRotationY(); 2291 final int newX = getChildOffset(screen) - getRelativeChildOffset(screen); 2292 setScrollX(newX); 2293 cl.setTranslationX(0f); 2294 cl.setRotationY(0f); 2295 } 2296 } 2297 2298 public void resetFinalScrollForPageChange(int screen) { 2299 if (screen >= 0) { 2300 CellLayout cl = (CellLayout) getChildAt(screen); 2301 setScrollX(mSavedScrollX); 2302 cl.setTranslationX(mSavedTranslationX); 2303 cl.setRotationY(mSavedRotationY); 2304 } 2305 } 2306 2307 public void getViewLocationRelativeToSelf(View v, int[] location) { 2308 getLocationInWindow(location); 2309 int x = location[0]; 2310 int y = location[1]; 2311 2312 v.getLocationInWindow(location); 2313 int vX = location[0]; 2314 int vY = location[1]; 2315 2316 location[0] = vX - x; 2317 location[1] = vY - y; 2318 } 2319 2320 public void onDragEnter(DragObject d) { 2321 mDragEnforcer.onDragEnter(); 2322 mCreateUserFolderOnDrop = false; 2323 mAddToExistingFolderOnDrop = false; 2324 2325 mDropToLayout = null; 2326 CellLayout layout = getCurrentDropLayout(); 2327 setCurrentDropLayout(layout); 2328 setCurrentDragOverlappingLayout(layout); 2329 2330 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2331 // don't need to show the outlines 2332 if (LauncherApplication.isScreenLarge()) { 2333 showOutlines(); 2334 } 2335 } 2336 2337 static Rect getCellLayoutMetrics(Launcher launcher, int orientation) { 2338 Resources res = launcher.getResources(); 2339 Display display = launcher.getWindowManager().getDefaultDisplay(); 2340 Point smallestSize = new Point(); 2341 Point largestSize = new Point(); 2342 display.getCurrentSizeRange(smallestSize, largestSize); 2343 if (orientation == CellLayout.LANDSCAPE) { 2344 if (mLandscapeCellLayoutMetrics == null) { 2345 int paddingLeft = res.getDimensionPixelSize(R.dimen.workspace_left_padding_land); 2346 int paddingRight = res.getDimensionPixelSize(R.dimen.workspace_right_padding_land); 2347 int paddingTop = res.getDimensionPixelSize(R.dimen.workspace_top_padding_land); 2348 int paddingBottom = res.getDimensionPixelSize(R.dimen.workspace_bottom_padding_land); 2349 int width = largestSize.x - paddingLeft - paddingRight; 2350 int height = smallestSize.y - paddingTop - paddingBottom; 2351 mLandscapeCellLayoutMetrics = new Rect(); 2352 CellLayout.getMetrics(mLandscapeCellLayoutMetrics, res, 2353 width, height, LauncherModel.getCellCountX(), LauncherModel.getCellCountY(), 2354 orientation); 2355 } 2356 return mLandscapeCellLayoutMetrics; 2357 } else if (orientation == CellLayout.PORTRAIT) { 2358 if (mPortraitCellLayoutMetrics == null) { 2359 int paddingLeft = res.getDimensionPixelSize(R.dimen.workspace_left_padding_land); 2360 int paddingRight = res.getDimensionPixelSize(R.dimen.workspace_right_padding_land); 2361 int paddingTop = res.getDimensionPixelSize(R.dimen.workspace_top_padding_land); 2362 int paddingBottom = res.getDimensionPixelSize(R.dimen.workspace_bottom_padding_land); 2363 int width = smallestSize.x - paddingLeft - paddingRight; 2364 int height = largestSize.y - paddingTop - paddingBottom; 2365 mPortraitCellLayoutMetrics = new Rect(); 2366 CellLayout.getMetrics(mPortraitCellLayoutMetrics, res, 2367 width, height, LauncherModel.getCellCountX(), LauncherModel.getCellCountY(), 2368 orientation); 2369 } 2370 return mPortraitCellLayoutMetrics; 2371 } 2372 return null; 2373 } 2374 2375 public void onDragExit(DragObject d) { 2376 mDragEnforcer.onDragExit(); 2377 2378 // Here we store the final page that will be dropped to, if the workspace in fact 2379 // receives the drop 2380 if (mInScrollArea) { 2381 mDropToLayout = mDragOverlappingLayout; 2382 } else { 2383 mDropToLayout = mDragTargetLayout; 2384 } 2385 2386 if (mDragMode == DRAG_MODE_CREATE_FOLDER) { 2387 mCreateUserFolderOnDrop = true; 2388 } else if (mDragMode == DRAG_MODE_ADD_TO_FOLDER) { 2389 mAddToExistingFolderOnDrop = true; 2390 } 2391 2392 // Reset the scroll area and previous drag target 2393 onResetScrollArea(); 2394 setCurrentDropLayout(null); 2395 setCurrentDragOverlappingLayout(null); 2396 2397 mSpringLoadedDragController.cancel(); 2398 2399 if (!mIsPageMoving) { 2400 hideOutlines(); 2401 } 2402 } 2403 2404 void setCurrentDropLayout(CellLayout layout) { 2405 if (mDragTargetLayout != null) { 2406 mDragTargetLayout.revertTempState(); 2407 mDragTargetLayout.onDragExit(); 2408 } 2409 mDragTargetLayout = layout; 2410 if (mDragTargetLayout != null) { 2411 mDragTargetLayout.onDragEnter(); 2412 } 2413 cleanupReorder(true); 2414 cleanupFolderCreation(); 2415 setCurrentDropOverCell(-1, -1); 2416 } 2417 2418 void setCurrentDragOverlappingLayout(CellLayout layout) { 2419 if (mDragOverlappingLayout != null) { 2420 mDragOverlappingLayout.setIsDragOverlapping(false); 2421 } 2422 mDragOverlappingLayout = layout; 2423 if (mDragOverlappingLayout != null) { 2424 mDragOverlappingLayout.setIsDragOverlapping(true); 2425 } 2426 invalidate(); 2427 } 2428 2429 void setCurrentDropOverCell(int x, int y) { 2430 if (x != mDragOverX || y != mDragOverY) { 2431 mDragOverX = x; 2432 mDragOverY = y; 2433 setDragMode(DRAG_MODE_NONE); 2434 } 2435 } 2436 2437 void setDragMode(int dragMode) { 2438 if (dragMode != mDragMode) { 2439 if (dragMode == DRAG_MODE_NONE) { 2440 cleanupAddToFolder(); 2441 // We don't want to cancel the re-order alarm every time the target cell changes 2442 // as this feels to slow / unresponsive. 2443 cleanupReorder(false); 2444 cleanupFolderCreation(); 2445 } else if (dragMode == DRAG_MODE_ADD_TO_FOLDER) { 2446 cleanupReorder(true); 2447 cleanupFolderCreation(); 2448 } else if (dragMode == DRAG_MODE_CREATE_FOLDER) { 2449 cleanupAddToFolder(); 2450 cleanupReorder(true); 2451 } else if (dragMode == DRAG_MODE_REORDER) { 2452 cleanupAddToFolder(); 2453 cleanupFolderCreation(); 2454 } 2455 mDragMode = dragMode; 2456 } 2457 } 2458 2459 private void cleanupFolderCreation() { 2460 if (mDragFolderRingAnimator != null) { 2461 mDragFolderRingAnimator.animateToNaturalState(); 2462 } 2463 mFolderCreationAlarm.cancelAlarm(); 2464 } 2465 2466 private void cleanupAddToFolder() { 2467 if (mDragOverFolderIcon != null) { 2468 mDragOverFolderIcon.onDragExit(null); 2469 mDragOverFolderIcon = null; 2470 } 2471 } 2472 2473 private void cleanupReorder(boolean cancelAlarm) { 2474 // Any pending reorders are canceled 2475 if (cancelAlarm) { 2476 mReorderAlarm.cancelAlarm(); 2477 } 2478 mLastReorderX = -1; 2479 mLastReorderY = -1; 2480 } 2481 2482 public DropTarget getDropTargetDelegate(DragObject d) { 2483 return null; 2484 } 2485 2486 /* 2487 * 2488 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2489 * coordinate space. The argument xy is modified with the return result. 2490 * 2491 */ 2492 void mapPointFromSelfToChild(View v, float[] xy) { 2493 mapPointFromSelfToChild(v, xy, null); 2494 } 2495 2496 /* 2497 * 2498 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2499 * coordinate space. The argument xy is modified with the return result. 2500 * 2501 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2502 * computing it itself; we use this to avoid redundant matrix inversions in 2503 * findMatchingPageForDragOver 2504 * 2505 */ 2506 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2507 if (cachedInverseMatrix == null) { 2508 v.getMatrix().invert(mTempInverseMatrix); 2509 cachedInverseMatrix = mTempInverseMatrix; 2510 } 2511 int scrollX = getScrollX(); 2512 if (mNextPage != INVALID_PAGE) { 2513 scrollX = mScroller.getFinalX(); 2514 } 2515 xy[0] = xy[0] + scrollX - v.getLeft(); 2516 xy[1] = xy[1] + getScrollY() - v.getTop(); 2517 cachedInverseMatrix.mapPoints(xy); 2518 } 2519 2520 /* 2521 * Maps a point from the Workspace's coordinate system to another sibling view's. (Workspace 2522 * covers the full screen) 2523 */ 2524 void mapPointFromSelfToSibling(View v, float[] xy) { 2525 xy[0] = xy[0] - v.getLeft(); 2526 xy[1] = xy[1] - v.getTop(); 2527 } 2528 2529 void mapPointFromSelfToHotseatLayout(Hotseat hotseat, float[] xy) { 2530 xy[0] = xy[0] - hotseat.getLeft() - hotseat.getLayout().getLeft(); 2531 xy[1] = xy[1] - hotseat.getTop() - hotseat.getLayout().getTop(); 2532 } 2533 2534 /* 2535 * 2536 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2537 * the parent View's coordinate space. The argument xy is modified with the return result. 2538 * 2539 */ 2540 void mapPointFromChildToSelf(View v, float[] xy) { 2541 v.getMatrix().mapPoints(xy); 2542 int scrollX = getScrollX(); 2543 if (mNextPage != INVALID_PAGE) { 2544 scrollX = mScroller.getFinalX(); 2545 } 2546 xy[0] -= (scrollX - v.getLeft()); 2547 xy[1] -= (getScrollY() - v.getTop()); 2548 } 2549 2550 static private float squaredDistance(float[] point1, float[] point2) { 2551 float distanceX = point1[0] - point2[0]; 2552 float distanceY = point2[1] - point2[1]; 2553 return distanceX * distanceX + distanceY * distanceY; 2554 } 2555 2556 /* 2557 * 2558 * Returns true if the passed CellLayout cl overlaps with dragView 2559 * 2560 */ 2561 boolean overlaps(CellLayout cl, DragView dragView, 2562 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2563 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2564 final float[] draggedItemTopLeft = mTempDragCoordinates; 2565 draggedItemTopLeft[0] = dragViewX; 2566 draggedItemTopLeft[1] = dragViewY; 2567 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2568 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2569 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2570 2571 // Transform the dragged item's top left coordinates 2572 // to the CellLayout's local coordinates 2573 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2574 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2575 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2576 2577 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2578 // Transform the dragged item's bottom right coordinates 2579 // to the CellLayout's local coordinates 2580 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2581 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2582 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2583 2584 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2585 float overlap = (overlapRegionRight - overlapRegionLeft) * 2586 (overlapRegionBottom - overlapRegionTop); 2587 if (overlap > 0) { 2588 return true; 2589 } 2590 } 2591 } 2592 return false; 2593 } 2594 2595 /* 2596 * 2597 * This method returns the CellLayout that is currently being dragged to. In order to drag 2598 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2599 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2600 * 2601 * Return null if no CellLayout is currently being dragged over 2602 * 2603 */ 2604 private CellLayout findMatchingPageForDragOver( 2605 DragView dragView, float originX, float originY, boolean exact) { 2606 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2607 // with the item being dragged and then choose the one that's closest to the touch point 2608 final int screenCount = getChildCount(); 2609 CellLayout bestMatchingScreen = null; 2610 float smallestDistSoFar = Float.MAX_VALUE; 2611 2612 for (int i = 0; i < screenCount; i++) { 2613 CellLayout cl = (CellLayout) getChildAt(i); 2614 2615 final float[] touchXy = {originX, originY}; 2616 // Transform the touch coordinates to the CellLayout's local coordinates 2617 // If the touch point is within the bounds of the cell layout, we can return immediately 2618 cl.getMatrix().invert(mTempInverseMatrix); 2619 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2620 2621 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2622 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2623 return cl; 2624 } 2625 2626 if (!exact) { 2627 // Get the center of the cell layout in screen coordinates 2628 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2629 cellLayoutCenter[0] = cl.getWidth()/2; 2630 cellLayoutCenter[1] = cl.getHeight()/2; 2631 mapPointFromChildToSelf(cl, cellLayoutCenter); 2632 2633 touchXy[0] = originX; 2634 touchXy[1] = originY; 2635 2636 // Calculate the distance between the center of the CellLayout 2637 // and the touch point 2638 float dist = squaredDistance(touchXy, cellLayoutCenter); 2639 2640 if (dist < smallestDistSoFar) { 2641 smallestDistSoFar = dist; 2642 bestMatchingScreen = cl; 2643 } 2644 } 2645 } 2646 return bestMatchingScreen; 2647 } 2648 2649 // This is used to compute the visual center of the dragView. This point is then 2650 // used to visualize drop locations and determine where to drop an item. The idea is that 2651 // the visual center represents the user's interpretation of where the item is, and hence 2652 // is the appropriate point to use when determining drop location. 2653 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2654 DragView dragView, float[] recycle) { 2655 float res[]; 2656 if (recycle == null) { 2657 res = new float[2]; 2658 } else { 2659 res = recycle; 2660 } 2661 2662 // First off, the drag view has been shifted in a way that is not represented in the 2663 // x and y values or the x/yOffsets. Here we account for that shift. 2664 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2665 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2666 2667 // These represent the visual top and left of drag view if a dragRect was provided. 2668 // If a dragRect was not provided, then they correspond to the actual view left and 2669 // top, as the dragRect is in that case taken to be the entire dragView. 2670 // R.dimen.dragViewOffsetY. 2671 int left = x - xOffset; 2672 int top = y - yOffset; 2673 2674 // In order to find the visual center, we shift by half the dragRect 2675 res[0] = left + dragView.getDragRegion().width() / 2; 2676 res[1] = top + dragView.getDragRegion().height() / 2; 2677 2678 return res; 2679 } 2680 2681 private boolean isDragWidget(DragObject d) { 2682 return (d.dragInfo instanceof LauncherAppWidgetInfo || 2683 d.dragInfo instanceof PendingAddWidgetInfo); 2684 } 2685 private boolean isExternalDragWidget(DragObject d) { 2686 return d.dragSource != this && isDragWidget(d); 2687 } 2688 2689 public void onDragOver(DragObject d) { 2690 // Skip drag over events while we are dragging over side pages 2691 if (mInScrollArea || mIsSwitchingState || mState == State.SMALL) return; 2692 2693 Rect r = new Rect(); 2694 CellLayout layout = null; 2695 ItemInfo item = (ItemInfo) d.dragInfo; 2696 2697 // Ensure that we have proper spans for the item that we are dropping 2698 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2699 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2700 d.dragView, mDragViewVisualCenter); 2701 2702 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2703 // Identify whether we have dragged over a side page 2704 if (isSmall()) { 2705 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 2706 mLauncher.getHotseat().getHitRect(r); 2707 if (r.contains(d.x, d.y)) { 2708 layout = mLauncher.getHotseat().getLayout(); 2709 } 2710 } 2711 if (layout == null) { 2712 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false); 2713 } 2714 if (layout != mDragTargetLayout) { 2715 2716 setCurrentDropLayout(layout); 2717 setCurrentDragOverlappingLayout(layout); 2718 2719 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 2720 if (isInSpringLoadedMode) { 2721 if (mLauncher.isHotseatLayout(layout)) { 2722 mSpringLoadedDragController.cancel(); 2723 } else { 2724 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2725 } 2726 } 2727 } 2728 } else { 2729 // Test to see if we are over the hotseat otherwise just use the current page 2730 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 2731 mLauncher.getHotseat().getHitRect(r); 2732 if (r.contains(d.x, d.y)) { 2733 layout = mLauncher.getHotseat().getLayout(); 2734 } 2735 } 2736 if (layout == null) { 2737 layout = getCurrentDropLayout(); 2738 } 2739 if (layout != mDragTargetLayout) { 2740 setCurrentDropLayout(layout); 2741 setCurrentDragOverlappingLayout(layout); 2742 } 2743 } 2744 2745 // Handle the drag over 2746 if (mDragTargetLayout != null) { 2747 // We want the point to be mapped to the dragTarget. 2748 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2749 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2750 } else { 2751 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2752 } 2753 2754 ItemInfo info = (ItemInfo) d.dragInfo; 2755 2756 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2757 (int) mDragViewVisualCenter[1], 1, 1, mDragTargetLayout, mTargetCell); 2758 2759 setCurrentDropOverCell(mTargetCell[0], mTargetCell[1]); 2760 2761 float targetCellDistance = mDragTargetLayout.getDistanceFromCell( 2762 mDragViewVisualCenter[0], mDragViewVisualCenter[1], mTargetCell); 2763 2764 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2765 mTargetCell[1]); 2766 2767 manageFolderFeedback(info, mDragTargetLayout, mTargetCell, 2768 targetCellDistance, dragOverView); 2769 2770 int minSpanX = item.spanX; 2771 int minSpanY = item.spanY; 2772 if (item.minSpanX > 0 && item.minSpanY > 0) { 2773 minSpanX = item.minSpanX; 2774 minSpanY = item.minSpanY; 2775 } 2776 2777 int[] reorderPosition = new int[2]; 2778 reorderPosition = findNearestArea((int) mDragViewVisualCenter[0], 2779 (int) mDragViewVisualCenter[1], item.spanX, item.spanY, mDragTargetLayout, 2780 reorderPosition); 2781 2782 boolean nearestDropOccupied = mDragTargetLayout.isNearestDropLocationOccupied((int) 2783 mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], item.spanX, 2784 item.spanY, child, mTargetCell); 2785 2786 if (!nearestDropOccupied) { 2787 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2788 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2789 mTargetCell[0], mTargetCell[1], item.spanX, item.spanY, false, 2790 d.dragView.getDragVisualizeOffset(), d.dragView.getDragRegion()); 2791 } else if ((mDragMode == DRAG_MODE_NONE || mDragMode == DRAG_MODE_REORDER) 2792 && !mReorderAlarm.alarmPending() && (mLastReorderX != reorderPosition[0] || 2793 mLastReorderY != reorderPosition[1])) { 2794 // Otherwise, if we aren't adding to or creating a folder and there's no pending 2795 // reorder, then we schedule a reorder 2796 ReorderAlarmListener listener = new ReorderAlarmListener(mDragViewVisualCenter, 2797 minSpanX, minSpanY, item.spanX, item.spanY, d.dragView, child); 2798 mReorderAlarm.setOnAlarmListener(listener); 2799 mReorderAlarm.setAlarm(REORDER_TIMEOUT); 2800 } 2801 2802 if (mDragMode == DRAG_MODE_CREATE_FOLDER || mDragMode == DRAG_MODE_ADD_TO_FOLDER || 2803 !nearestDropOccupied) { 2804 if (mDragTargetLayout != null) { 2805 mDragTargetLayout.revertTempState(); 2806 } 2807 } 2808 } 2809 } 2810 2811 private void manageFolderFeedback(ItemInfo info, CellLayout targetLayout, 2812 int[] targetCell, float distance, View dragOverView) { 2813 boolean userFolderPending = willCreateUserFolder(info, targetLayout, targetCell, distance, 2814 false); 2815 2816 if (mDragMode == DRAG_MODE_NONE && userFolderPending && 2817 !mFolderCreationAlarm.alarmPending()) { 2818 mFolderCreationAlarm.setOnAlarmListener(new 2819 FolderCreationAlarmListener(targetLayout, targetCell[0], targetCell[1])); 2820 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2821 return; 2822 } 2823 2824 boolean willAddToFolder = 2825 willAddToExistingUserFolder(info, targetLayout, targetCell, distance); 2826 2827 if (willAddToFolder && mDragMode == DRAG_MODE_NONE) { 2828 mDragOverFolderIcon = ((FolderIcon) dragOverView); 2829 mAddToExistingFolderOnDrop = true; 2830 mDragOverFolderIcon.onDragEnter(info); 2831 if (targetLayout != null) { 2832 targetLayout.clearDragOutlines(); 2833 } 2834 setDragMode(DRAG_MODE_ADD_TO_FOLDER); 2835 return; 2836 } 2837 2838 if (mDragMode == DRAG_MODE_ADD_TO_FOLDER && !willAddToFolder) { 2839 setDragMode(DRAG_MODE_NONE); 2840 } 2841 if (mDragMode == DRAG_MODE_CREATE_FOLDER && !userFolderPending) { 2842 setDragMode(DRAG_MODE_NONE); 2843 } 2844 2845 return; 2846 } 2847 2848 class FolderCreationAlarmListener implements OnAlarmListener { 2849 CellLayout layout; 2850 int cellX; 2851 int cellY; 2852 2853 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 2854 this.layout = layout; 2855 this.cellX = cellX; 2856 this.cellY = cellY; 2857 } 2858 2859 public void onAlarm(Alarm alarm) { 2860 if (mDragFolderRingAnimator == null) { 2861 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 2862 } 2863 mDragFolderRingAnimator.setCell(cellX, cellY); 2864 mDragFolderRingAnimator.setCellLayout(layout); 2865 mDragFolderRingAnimator.animateToAcceptState(); 2866 layout.showFolderAccept(mDragFolderRingAnimator); 2867 layout.clearDragOutlines(); 2868 setDragMode(DRAG_MODE_CREATE_FOLDER); 2869 } 2870 } 2871 2872 class ReorderAlarmListener implements OnAlarmListener { 2873 float[] dragViewCenter; 2874 int minSpanX, minSpanY, spanX, spanY; 2875 DragView dragView; 2876 View child; 2877 2878 public ReorderAlarmListener(float[] dragViewCenter, int minSpanX, int minSpanY, int spanX, 2879 int spanY, DragView dragView, View child) { 2880 this.dragViewCenter = dragViewCenter; 2881 this.minSpanX = minSpanX; 2882 this.minSpanY = minSpanY; 2883 this.spanX = spanX; 2884 this.spanY = spanY; 2885 this.child = child; 2886 this.dragView = dragView; 2887 } 2888 2889 public void onAlarm(Alarm alarm) { 2890 int[] resultSpan = new int[2]; 2891 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2892 (int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell); 2893 mLastReorderX = mTargetCell[0]; 2894 mLastReorderY = mTargetCell[1]; 2895 2896 mTargetCell = mDragTargetLayout.createArea((int) mDragViewVisualCenter[0], 2897 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2898 child, mTargetCell, resultSpan, CellLayout.MODE_DRAG_OVER); 2899 2900 if (mTargetCell[0] < 0 || mTargetCell[1] < 0) { 2901 mDragTargetLayout.revertTempState(); 2902 } else { 2903 setDragMode(DRAG_MODE_REORDER); 2904 } 2905 2906 boolean resize = resultSpan[0] != spanX || resultSpan[1] != spanY; 2907 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2908 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2909 mTargetCell[0], mTargetCell[1], resultSpan[0], resultSpan[1], resize, 2910 dragView.getDragVisualizeOffset(), dragView.getDragRegion()); 2911 } 2912 } 2913 2914 @Override 2915 public void getHitRect(Rect outRect) { 2916 // We want the workspace to have the whole area of the display (it will find the correct 2917 // cell layout to drop to in the existing drag/drop logic. 2918 outRect.set(0, 0, mDisplaySize.x, mDisplaySize.y); 2919 } 2920 2921 /** 2922 * Add the item specified by dragInfo to the given layout. 2923 * @return true if successful 2924 */ 2925 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2926 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2927 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2928 return true; 2929 } 2930 mLauncher.showOutOfSpaceMessage(mLauncher.isHotseatLayout(layout)); 2931 return false; 2932 } 2933 2934 private void onDropExternal(int[] touchXY, Object dragInfo, 2935 CellLayout cellLayout, boolean insertAtFirst) { 2936 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 2937 } 2938 2939 /** 2940 * Drop an item that didn't originate on one of the workspace screens. 2941 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2942 * come from another app altogether. 2943 * 2944 * NOTE: This can also be called when we are outside of a drag event, when we want 2945 * to add an item to one of the workspace screens. 2946 */ 2947 private void onDropExternal(final int[] touchXY, final Object dragInfo, 2948 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 2949 final Runnable exitSpringLoadedRunnable = new Runnable() { 2950 @Override 2951 public void run() { 2952 mLauncher.exitSpringLoadedDragModeDelayed(true, false, null); 2953 } 2954 }; 2955 2956 ItemInfo info = (ItemInfo) dragInfo; 2957 int spanX = info.spanX; 2958 int spanY = info.spanY; 2959 if (mDragInfo != null) { 2960 spanX = mDragInfo.spanX; 2961 spanY = mDragInfo.spanY; 2962 } 2963 2964 final long container = mLauncher.isHotseatLayout(cellLayout) ? 2965 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2966 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2967 final int screen = indexOfChild(cellLayout); 2968 if (!mLauncher.isHotseatLayout(cellLayout) && screen != mCurrentPage 2969 && mState != State.SPRING_LOADED) { 2970 snapToPage(screen); 2971 } 2972 2973 if (info instanceof PendingAddItemInfo) { 2974 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 2975 2976 boolean findNearestVacantCell = true; 2977 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 2978 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 2979 cellLayout, mTargetCell); 2980 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2981 mDragViewVisualCenter[1], mTargetCell); 2982 if (willCreateUserFolder((ItemInfo) d.dragInfo, cellLayout, mTargetCell, 2983 distance, true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 2984 cellLayout, mTargetCell, distance)) { 2985 findNearestVacantCell = false; 2986 } 2987 } 2988 2989 final ItemInfo item = (ItemInfo) d.dragInfo; 2990 if (findNearestVacantCell) { 2991 int minSpanX = item.spanX; 2992 int minSpanY = item.spanY; 2993 if (item.minSpanX > 0 && item.minSpanY > 0) { 2994 minSpanX = item.minSpanX; 2995 minSpanY = item.minSpanY; 2996 } 2997 int[] resultSpan = new int[2]; 2998 mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], 2999 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, info.spanX, info.spanY, 3000 null, mTargetCell, resultSpan, CellLayout.MODE_ON_DROP_EXTERNAL); 3001 item.spanX = resultSpan[0]; 3002 item.spanY = resultSpan[1]; 3003 } 3004 3005 Runnable onAnimationCompleteRunnable = new Runnable() { 3006 @Override 3007 public void run() { 3008 // When dragging and dropping from customization tray, we deal with creating 3009 // widgets/shortcuts/folders in a slightly different way 3010 switch (pendingInfo.itemType) { 3011 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 3012 int span[] = new int[2]; 3013 span[0] = item.spanX; 3014 span[1] = item.spanY; 3015 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, 3016 container, screen, mTargetCell, span, null); 3017 break; 3018 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3019 mLauncher.processShortcutFromDrop(pendingInfo.componentName, 3020 container, screen, mTargetCell, null); 3021 break; 3022 default: 3023 throw new IllegalStateException("Unknown item type: " + 3024 pendingInfo.itemType); 3025 } 3026 } 3027 }; 3028 View finalView = pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET 3029 ? ((PendingAddWidgetInfo) pendingInfo).boundWidget : null; 3030 int animationStyle = ANIMATE_INTO_POSITION_AND_DISAPPEAR; 3031 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && 3032 ((PendingAddWidgetInfo) pendingInfo).info.configure != null) { 3033 animationStyle = ANIMATE_INTO_POSITION_AND_REMAIN; 3034 } 3035 animateWidgetDrop(info, cellLayout, d.dragView, onAnimationCompleteRunnable, 3036 animationStyle, finalView, true); 3037 } else { 3038 // This is for other drag/drop cases, like dragging from All Apps 3039 View view = null; 3040 3041 switch (info.itemType) { 3042 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 3043 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3044 if (info.container == NO_ID && info instanceof ApplicationInfo) { 3045 // Came from all apps -- make a copy 3046 info = new ShortcutInfo((ApplicationInfo) info); 3047 } 3048 view = mLauncher.createShortcut(R.layout.application, cellLayout, 3049 (ShortcutInfo) info); 3050 break; 3051 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 3052 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 3053 (FolderInfo) info, mIconCache); 3054 break; 3055 default: 3056 throw new IllegalStateException("Unknown item type: " + info.itemType); 3057 } 3058 3059 // First we find the cell nearest to point at which the item is 3060 // dropped, without any consideration to whether there is an item there. 3061 if (touchXY != null) { 3062 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3063 cellLayout, mTargetCell); 3064 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3065 mDragViewVisualCenter[1], mTargetCell); 3066 d.postAnimationRunnable = exitSpringLoadedRunnable; 3067 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, distance, 3068 true, d.dragView, d.postAnimationRunnable)) { 3069 return; 3070 } 3071 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, distance, d, 3072 true)) { 3073 return; 3074 } 3075 } 3076 3077 if (touchXY != null) { 3078 // when dragging and dropping, just find the closest free spot 3079 mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], 3080 (int) mDragViewVisualCenter[1], 1, 1, 1, 1, 3081 null, mTargetCell, null, CellLayout.MODE_ON_DROP_EXTERNAL); 3082 } else { 3083 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3084 } 3085 addInScreen(view, container, screen, mTargetCell[0], mTargetCell[1], info.spanX, 3086 info.spanY, insertAtFirst); 3087 cellLayout.onDropChild(view); 3088 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 3089 cellLayout.getShortcutsAndWidgets().measureChild(view); 3090 3091 3092 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, 3093 lp.cellX, lp.cellY); 3094 3095 if (d.dragView != null) { 3096 // We wrap the animation call in the temporary set and reset of the current 3097 // cellLayout to its final transform -- this means we animate the drag view to 3098 // the correct final location. 3099 setFinalTransitionTransform(cellLayout); 3100 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 3101 exitSpringLoadedRunnable); 3102 resetTransitionTransform(cellLayout); 3103 } 3104 } 3105 } 3106 3107 public Bitmap createWidgetBitmap(ItemInfo widgetInfo, View layout) { 3108 int[] unScaledSize = mLauncher.getWorkspace().estimateItemSize(widgetInfo.spanX, 3109 widgetInfo.spanY, widgetInfo, false); 3110 int visibility = layout.getVisibility(); 3111 layout.setVisibility(VISIBLE); 3112 3113 int width = MeasureSpec.makeMeasureSpec(unScaledSize[0], MeasureSpec.EXACTLY); 3114 int height = MeasureSpec.makeMeasureSpec(unScaledSize[1], MeasureSpec.EXACTLY); 3115 Bitmap b = Bitmap.createBitmap(unScaledSize[0], unScaledSize[1], 3116 Bitmap.Config.ARGB_8888); 3117 Canvas c = new Canvas(b); 3118 3119 layout.measure(width, height); 3120 layout.layout(0, 0, unScaledSize[0], unScaledSize[1]); 3121 layout.draw(c); 3122 c.setBitmap(null); 3123 layout.setVisibility(visibility); 3124 return b; 3125 } 3126 3127 private void getFinalPositionForDropAnimation(int[] loc, float[] scaleXY, 3128 DragView dragView, CellLayout layout, ItemInfo info, int[] targetCell, View finalView, 3129 boolean external) { 3130 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 3131 // location and size on the home screen. 3132 int spanX = info.spanX; 3133 int spanY = info.spanY; 3134 3135 Rect r = estimateItemPosition(layout, info, targetCell[0], targetCell[1], spanX, spanY); 3136 loc[0] = r.left; 3137 loc[1] = r.top; 3138 3139 setFinalTransitionTransform(layout); 3140 float cellLayoutScale = 3141 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(layout, loc); 3142 resetTransitionTransform(layout); 3143 float dragViewScaleX = (1.0f * r.width()) / dragView.getMeasuredWidth(); 3144 float dragViewScaleY = (1.0f * r.height()) / dragView.getMeasuredHeight(); 3145 3146 // The animation will scale the dragView about its center, so we need to center about 3147 // the final location. 3148 loc[0] -= (dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 3149 loc[1] -= (dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 3150 3151 scaleXY[0] = dragViewScaleX * cellLayoutScale; 3152 scaleXY[1] = dragViewScaleY * cellLayoutScale; 3153 } 3154 3155 public void animateWidgetDrop(ItemInfo info, CellLayout cellLayout, DragView dragView, 3156 final Runnable onCompleteRunnable, int animationType, final View finalView, 3157 boolean external) { 3158 Rect from = new Rect(); 3159 mLauncher.getDragLayer().getViewRectRelativeToSelf(dragView, from); 3160 3161 int[] finalPos = new int[2]; 3162 float scaleXY[] = new float[2]; 3163 getFinalPositionForDropAnimation(finalPos, scaleXY, dragView, cellLayout, info, mTargetCell, 3164 finalView, external); 3165 3166 Resources res = mLauncher.getResources(); 3167 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration) - 200; 3168 3169 // In the case where we've prebound the widget, we remove it from the DragLayer 3170 if (finalView instanceof AppWidgetHostView && external) { 3171 mLauncher.getDragLayer().removeView(finalView); 3172 } 3173 if ((animationType == ANIMATE_INTO_POSITION_AND_RESIZE || external) && finalView != null) { 3174 Bitmap crossFadeBitmap = createWidgetBitmap(info, finalView); 3175 dragView.setCrossFadeBitmap(crossFadeBitmap); 3176 dragView.crossFade((int) (duration * 0.8f)); 3177 } else if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && external) { 3178 scaleXY[0] = scaleXY[1] = Math.min(scaleXY[0], scaleXY[1]); 3179 } 3180 3181 DragLayer dragLayer = mLauncher.getDragLayer(); 3182 if (animationType == CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION) { 3183 mLauncher.getDragLayer().animateViewIntoPosition(dragView, finalPos, 0f, 0.1f, 0.1f, 3184 DragLayer.ANIMATION_END_DISAPPEAR, onCompleteRunnable, duration); 3185 } else { 3186 int endStyle; 3187 if (animationType == ANIMATE_INTO_POSITION_AND_REMAIN) { 3188 endStyle = DragLayer.ANIMATION_END_REMAIN_VISIBLE; 3189 } else { 3190 endStyle = DragLayer.ANIMATION_END_DISAPPEAR;; 3191 } 3192 3193 Runnable onComplete = new Runnable() { 3194 @Override 3195 public void run() { 3196 if (finalView != null) { 3197 finalView.setVisibility(VISIBLE); 3198 } 3199 if (onCompleteRunnable != null) { 3200 onCompleteRunnable.run(); 3201 } 3202 } 3203 }; 3204 dragLayer.animateViewIntoPosition(dragView, from.left, from.top, finalPos[0], 3205 finalPos[1], 1, 1, 1, scaleXY[0], scaleXY[1], onComplete, endStyle, 3206 duration, this); 3207 } 3208 } 3209 3210 public void setFinalTransitionTransform(CellLayout layout) { 3211 if (isSwitchingState()) { 3212 int index = indexOfChild(layout); 3213 mCurrentScaleX = layout.getScaleX(); 3214 mCurrentScaleY = layout.getScaleY(); 3215 mCurrentTranslationX = layout.getTranslationX(); 3216 mCurrentTranslationY = layout.getTranslationY(); 3217 mCurrentRotationY = layout.getRotationY(); 3218 layout.setScaleX(mNewScaleXs[index]); 3219 layout.setScaleY(mNewScaleYs[index]); 3220 layout.setTranslationX(mNewTranslationXs[index]); 3221 layout.setTranslationY(mNewTranslationYs[index]); 3222 layout.setRotationY(mNewRotationYs[index]); 3223 } 3224 } 3225 public void resetTransitionTransform(CellLayout layout) { 3226 if (isSwitchingState()) { 3227 mCurrentScaleX = layout.getScaleX(); 3228 mCurrentScaleY = layout.getScaleY(); 3229 mCurrentTranslationX = layout.getTranslationX(); 3230 mCurrentTranslationY = layout.getTranslationY(); 3231 mCurrentRotationY = layout.getRotationY(); 3232 layout.setScaleX(mCurrentScaleX); 3233 layout.setScaleY(mCurrentScaleY); 3234 layout.setTranslationX(mCurrentTranslationX); 3235 layout.setTranslationY(mCurrentTranslationY); 3236 layout.setRotationY(mCurrentRotationY); 3237 } 3238 } 3239 3240 /** 3241 * Return the current {@link CellLayout}, correctly picking the destination 3242 * screen while a scroll is in progress. 3243 */ 3244 public CellLayout getCurrentDropLayout() { 3245 return (CellLayout) getChildAt(getNextPage()); 3246 } 3247 3248 /** 3249 * Return the current CellInfo describing our current drag; this method exists 3250 * so that Launcher can sync this object with the correct info when the activity is created/ 3251 * destroyed 3252 * 3253 */ 3254 public CellLayout.CellInfo getDragInfo() { 3255 return mDragInfo; 3256 } 3257 3258 /** 3259 * Calculate the nearest cell where the given object would be dropped. 3260 * 3261 * pixelX and pixelY should be in the coordinate system of layout 3262 */ 3263 private int[] findNearestArea(int pixelX, int pixelY, 3264 int spanX, int spanY, CellLayout layout, int[] recycle) { 3265 return layout.findNearestArea( 3266 pixelX, pixelY, spanX, spanY, recycle); 3267 } 3268 3269 void setup(DragController dragController) { 3270 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3271 mDragController = dragController; 3272 3273 // hardware layers on children are enabled on startup, but should be disabled until 3274 // needed 3275 updateChildrenLayersEnabled(); 3276 setWallpaperDimension(); 3277 } 3278 3279 /** 3280 * Called at the end of a drag which originated on the workspace. 3281 */ 3282 public void onDropCompleted(View target, DragObject d, boolean isFlingToDelete, 3283 boolean success) { 3284 if (success) { 3285 if (target != this) { 3286 if (mDragInfo != null) { 3287 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 3288 if (mDragInfo.cell instanceof DropTarget) { 3289 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 3290 } 3291 } 3292 } 3293 } else if (mDragInfo != null) { 3294 CellLayout cellLayout; 3295 if (mLauncher.isHotseatLayout(target)) { 3296 cellLayout = mLauncher.getHotseat().getLayout(); 3297 } else { 3298 cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3299 } 3300 cellLayout.onDropChild(mDragInfo.cell); 3301 } 3302 if (d.cancelled && mDragInfo.cell != null) { 3303 mDragInfo.cell.setVisibility(VISIBLE); 3304 } 3305 mDragOutline = null; 3306 mDragInfo = null; 3307 3308 // Hide the scrolling indicator after you pick up an item 3309 hideScrollingIndicator(false); 3310 } 3311 3312 void updateItemLocationsInDatabase(CellLayout cl) { 3313 int count = cl.getShortcutsAndWidgets().getChildCount(); 3314 3315 int screen = indexOfChild(cl); 3316 int container = Favorites.CONTAINER_DESKTOP; 3317 3318 if (mLauncher.isHotseatLayout(cl)) { 3319 screen = -1; 3320 container = Favorites.CONTAINER_HOTSEAT; 3321 } 3322 3323 for (int i = 0; i < count; i++) { 3324 View v = cl.getShortcutsAndWidgets().getChildAt(i); 3325 ItemInfo info = (ItemInfo) v.getTag(); 3326 // Null check required as the AllApps button doesn't have an item info 3327 if (info != null) { 3328 LauncherModel.modifyItemInDatabase(mLauncher, info, container, screen, info.cellX, 3329 info.cellY, info.spanX, info.spanY); 3330 } 3331 } 3332 } 3333 3334 @Override 3335 public boolean supportsFlingToDelete() { 3336 return true; 3337 } 3338 3339 @Override 3340 public void onFlingToDelete(DragObject d, int x, int y, PointF vec) { 3341 // Do nothing 3342 } 3343 3344 @Override 3345 public void onFlingToDeleteCompleted() { 3346 // Do nothing 3347 } 3348 3349 public boolean isDropEnabled() { 3350 return true; 3351 } 3352 3353 @Override 3354 protected void onRestoreInstanceState(Parcelable state) { 3355 super.onRestoreInstanceState(state); 3356 Launcher.setScreen(mCurrentPage); 3357 } 3358 3359 @Override 3360 public void scrollLeft() { 3361 if (!isSmall() && !mIsSwitchingState) { 3362 super.scrollLeft(); 3363 } 3364 Folder openFolder = getOpenFolder(); 3365 if (openFolder != null) { 3366 openFolder.completeDragExit(); 3367 } 3368 } 3369 3370 @Override 3371 public void scrollRight() { 3372 if (!isSmall() && !mIsSwitchingState) { 3373 super.scrollRight(); 3374 } 3375 Folder openFolder = getOpenFolder(); 3376 if (openFolder != null) { 3377 openFolder.completeDragExit(); 3378 } 3379 } 3380 3381 @Override 3382 public boolean onEnterScrollArea(int x, int y, int direction) { 3383 // Ignore the scroll area if we are dragging over the hot seat 3384 boolean isPortrait = !LauncherApplication.isScreenLandscape(getContext()); 3385 if (mLauncher.getHotseat() != null && isPortrait) { 3386 Rect r = new Rect(); 3387 mLauncher.getHotseat().getHitRect(r); 3388 if (r.contains(x, y)) { 3389 return false; 3390 } 3391 } 3392 3393 boolean result = false; 3394 if (!isSmall() && !mIsSwitchingState) { 3395 mInScrollArea = true; 3396 3397 final int page = getNextPage() + 3398 (direction == DragController.SCROLL_LEFT ? -1 : 1); 3399 3400 // We always want to exit the current layout to ensure parity of enter / exit 3401 setCurrentDropLayout(null); 3402 3403 if (0 <= page && page < getChildCount()) { 3404 CellLayout layout = (CellLayout) getChildAt(page); 3405 setCurrentDragOverlappingLayout(layout); 3406 3407 // Workspace is responsible for drawing the edge glow on adjacent pages, 3408 // so we need to redraw the workspace when this may have changed. 3409 invalidate(); 3410 result = true; 3411 } 3412 } 3413 return result; 3414 } 3415 3416 @Override 3417 public boolean onExitScrollArea() { 3418 boolean result = false; 3419 if (mInScrollArea) { 3420 invalidate(); 3421 CellLayout layout = getCurrentDropLayout(); 3422 setCurrentDropLayout(layout); 3423 setCurrentDragOverlappingLayout(layout); 3424 3425 result = true; 3426 mInScrollArea = false; 3427 } 3428 return result; 3429 } 3430 3431 private void onResetScrollArea() { 3432 setCurrentDragOverlappingLayout(null); 3433 mInScrollArea = false; 3434 } 3435 3436 /** 3437 * Returns a specific CellLayout 3438 */ 3439 CellLayout getParentCellLayoutForView(View v) { 3440 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3441 for (CellLayout layout : layouts) { 3442 if (layout.getShortcutsAndWidgets().indexOfChild(v) > -1) { 3443 return layout; 3444 } 3445 } 3446 return null; 3447 } 3448 3449 /** 3450 * Returns a list of all the CellLayouts in the workspace. 3451 */ 3452 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3453 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3454 int screenCount = getChildCount(); 3455 for (int screen = 0; screen < screenCount; screen++) { 3456 layouts.add(((CellLayout) getChildAt(screen))); 3457 } 3458 if (mLauncher.getHotseat() != null) { 3459 layouts.add(mLauncher.getHotseat().getLayout()); 3460 } 3461 return layouts; 3462 } 3463 3464 /** 3465 * We should only use this to search for specific children. Do not use this method to modify 3466 * ShortcutsAndWidgetsContainer directly. Includes ShortcutAndWidgetContainers from 3467 * the hotseat and workspace pages 3468 */ 3469 ArrayList<ShortcutAndWidgetContainer> getAllShortcutAndWidgetContainers() { 3470 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3471 new ArrayList<ShortcutAndWidgetContainer>(); 3472 int screenCount = getChildCount(); 3473 for (int screen = 0; screen < screenCount; screen++) { 3474 childrenLayouts.add(((CellLayout) getChildAt(screen)).getShortcutsAndWidgets()); 3475 } 3476 if (mLauncher.getHotseat() != null) { 3477 childrenLayouts.add(mLauncher.getHotseat().getLayout().getShortcutsAndWidgets()); 3478 } 3479 return childrenLayouts; 3480 } 3481 3482 public Folder getFolderForTag(Object tag) { 3483 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3484 getAllShortcutAndWidgetContainers(); 3485 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3486 int count = layout.getChildCount(); 3487 for (int i = 0; i < count; i++) { 3488 View child = layout.getChildAt(i); 3489 if (child instanceof Folder) { 3490 Folder f = (Folder) child; 3491 if (f.getInfo() == tag && f.getInfo().opened) { 3492 return f; 3493 } 3494 } 3495 } 3496 } 3497 return null; 3498 } 3499 3500 public View getViewForTag(Object tag) { 3501 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3502 getAllShortcutAndWidgetContainers(); 3503 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3504 int count = layout.getChildCount(); 3505 for (int i = 0; i < count; i++) { 3506 View child = layout.getChildAt(i); 3507 if (child.getTag() == tag) { 3508 return child; 3509 } 3510 } 3511 } 3512 return null; 3513 } 3514 3515 void clearDropTargets() { 3516 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3517 getAllShortcutAndWidgetContainers(); 3518 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3519 int childCount = layout.getChildCount(); 3520 for (int j = 0; j < childCount; j++) { 3521 View v = layout.getChildAt(j); 3522 if (v instanceof DropTarget) { 3523 mDragController.removeDropTarget((DropTarget) v); 3524 } 3525 } 3526 } 3527 } 3528 3529 void removeItems(final ArrayList<ApplicationInfo> apps) { 3530 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3531 3532 final HashSet<String> packageNames = new HashSet<String>(); 3533 final int appCount = apps.size(); 3534 for (int i = 0; i < appCount; i++) { 3535 packageNames.add(apps.get(i).componentName.getPackageName()); 3536 } 3537 3538 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3539 for (final CellLayout layoutParent: cellLayouts) { 3540 final ViewGroup layout = layoutParent.getShortcutsAndWidgets(); 3541 3542 // Avoid ANRs by treating each screen separately 3543 post(new Runnable() { 3544 public void run() { 3545 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3546 childrenToRemove.clear(); 3547 3548 int childCount = layout.getChildCount(); 3549 for (int j = 0; j < childCount; j++) { 3550 final View view = layout.getChildAt(j); 3551 Object tag = view.getTag(); 3552 3553 if (tag instanceof ShortcutInfo) { 3554 final ShortcutInfo info = (ShortcutInfo) tag; 3555 final Intent intent = info.intent; 3556 final ComponentName name = intent.getComponent(); 3557 3558 if (name != null) { 3559 if (packageNames.contains(name.getPackageName())) { 3560 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3561 childrenToRemove.add(view); 3562 } 3563 } 3564 } else if (tag instanceof FolderInfo) { 3565 final FolderInfo info = (FolderInfo) tag; 3566 final ArrayList<ShortcutInfo> contents = info.contents; 3567 final int contentsCount = contents.size(); 3568 final ArrayList<ShortcutInfo> appsToRemoveFromFolder = 3569 new ArrayList<ShortcutInfo>(); 3570 3571 for (int k = 0; k < contentsCount; k++) { 3572 final ShortcutInfo appInfo = contents.get(k); 3573 final Intent intent = appInfo.intent; 3574 final ComponentName name = intent.getComponent(); 3575 3576 if (name != null) { 3577 if (packageNames.contains(name.getPackageName())) { 3578 appsToRemoveFromFolder.add(appInfo); 3579 } 3580 } 3581 } 3582 for (ShortcutInfo item: appsToRemoveFromFolder) { 3583 info.remove(item); 3584 LauncherModel.deleteItemFromDatabase(mLauncher, item); 3585 } 3586 } else if (tag instanceof LauncherAppWidgetInfo) { 3587 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3588 final ComponentName provider = info.providerName; 3589 if (provider != null) { 3590 if (packageNames.contains(provider.getPackageName())) { 3591 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3592 childrenToRemove.add(view); 3593 } 3594 } 3595 } 3596 } 3597 3598 childCount = childrenToRemove.size(); 3599 for (int j = 0; j < childCount; j++) { 3600 View child = childrenToRemove.get(j); 3601 // Note: We can not remove the view directly from CellLayoutChildren as this 3602 // does not re-mark the spaces as unoccupied. 3603 layoutParent.removeViewInLayout(child); 3604 if (child instanceof DropTarget) { 3605 mDragController.removeDropTarget((DropTarget)child); 3606 } 3607 } 3608 3609 if (childCount > 0) { 3610 layout.requestLayout(); 3611 layout.invalidate(); 3612 } 3613 } 3614 }); 3615 } 3616 3617 // It is no longer the case the BubbleTextViews correspond 1:1 with the workspace items in 3618 // the database (and LauncherModel) since shortcuts are not added and animated in until 3619 // the user returns to launcher. As a result, we really should be cleaning up the Db 3620 // regardless of whether the item was added or not (unlike the logic above). This is only 3621 // relevant for direct workspace items. 3622 post(new Runnable() { 3623 @Override 3624 public void run() { 3625 String spKey = LauncherApplication.getSharedPreferencesKey(); 3626 SharedPreferences sp = getContext().getSharedPreferences(spKey, 3627 Context.MODE_PRIVATE); 3628 Set<String> newApps = sp.getStringSet(InstallShortcutReceiver.NEW_APPS_LIST_KEY, 3629 null); 3630 3631 for (String packageName: packageNames) { 3632 // Remove all items that have the same package, but were not removed above 3633 ArrayList<ShortcutInfo> infos = 3634 mLauncher.getModel().getShortcutInfosForPackage(packageName); 3635 for (ShortcutInfo info : infos) { 3636 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3637 } 3638 // Remove all queued items that match the same package 3639 if (newApps != null) { 3640 for (String intentStr : newApps) { 3641 try { 3642 Intent intent = Intent.parseUri(intentStr, 0); 3643 String pn = ItemInfo.getPackageName(intent); 3644 if (packageNames.contains(pn)) { 3645 newApps.remove(intentStr); 3646 } 3647 } catch (URISyntaxException e) {} 3648 } 3649 } 3650 } 3651 } 3652 }); 3653 } 3654 3655 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3656 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = getAllShortcutAndWidgetContainers(); 3657 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3658 int childCount = layout.getChildCount(); 3659 for (int j = 0; j < childCount; j++) { 3660 final View view = layout.getChildAt(j); 3661 Object tag = view.getTag(); 3662 if (tag instanceof ShortcutInfo) { 3663 ShortcutInfo info = (ShortcutInfo) tag; 3664 // We need to check for ACTION_MAIN otherwise getComponent() might 3665 // return null for some shortcuts (for instance, for shortcuts to 3666 // web pages.) 3667 final Intent intent = info.intent; 3668 final ComponentName name = intent.getComponent(); 3669 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3670 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3671 final int appCount = apps.size(); 3672 for (int k = 0; k < appCount; k++) { 3673 ApplicationInfo app = apps.get(k); 3674 if (app.componentName.equals(name)) { 3675 BubbleTextView shortcut = (BubbleTextView) view; 3676 info.updateIcon(mIconCache); 3677 info.title = app.title.toString(); 3678 shortcut.applyFromShortcutInfo(info, mIconCache); 3679 } 3680 } 3681 } 3682 } 3683 } 3684 } 3685 } 3686 3687 void moveToDefaultScreen(boolean animate) { 3688 if (!isSmall()) { 3689 if (animate) { 3690 snapToPage(mDefaultPage); 3691 } else { 3692 setCurrentPage(mDefaultPage); 3693 } 3694 } 3695 getChildAt(mDefaultPage).requestFocus(); 3696 } 3697 3698 @Override 3699 public void syncPages() { 3700 } 3701 3702 @Override 3703 public void syncPageItems(int page, boolean immediate) { 3704 } 3705 3706 @Override 3707 protected String getCurrentPageDescription() { 3708 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 3709 return String.format(getContext().getString(R.string.workspace_scroll_format), 3710 page + 1, getChildCount()); 3711 } 3712 3713 public void getLocationInDragLayer(int[] loc) { 3714 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 3715 } 3716 3717 void setFadeForOverScroll(float fade) { 3718 if (!isScrollingIndicatorEnabled()) return; 3719 3720 mOverscrollFade = fade; 3721 float reducedFade = 0.5f + 0.5f * (1 - fade); 3722 final ViewGroup parent = (ViewGroup) getParent(); 3723 final ImageView qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3724 final ImageView dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3725 final View scrollIndicator = getScrollingIndicator(); 3726 3727 cancelScrollingIndicatorAnimations(); 3728 if (qsbDivider != null) qsbDivider.setAlpha(reducedFade); 3729 if (dockDivider != null) dockDivider.setAlpha(reducedFade); 3730 scrollIndicator.setAlpha(1 - fade); 3731 } 3732} 3733