Workspace.java revision 08c93d7eca03ec2cd1300ce6a085b59a4670a03b
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.ClipDescription; 30import android.content.ComponentName; 31import android.content.Context; 32import android.content.Intent; 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.util.Pair; 51import android.view.Display; 52import android.view.DragEvent; 53import android.view.MotionEvent; 54import android.view.View; 55import android.view.ViewGroup; 56import android.view.animation.AccelerateInterpolator; 57import android.view.animation.DecelerateInterpolator; 58import android.widget.ImageView; 59import android.widget.TextView; 60 61import com.android.launcher.R; 62import com.android.launcher2.FolderIcon.FolderRingAnimator; 63import com.android.launcher2.InstallWidgetReceiver.WidgetMimeTypeHandlerData; 64import com.android.launcher2.LauncherSettings.Favorites; 65 66import java.util.ArrayList; 67import java.util.HashSet; 68import java.util.List; 69 70/** 71 * The workspace is a wide area with a wallpaper and a finite number of pages. 72 * Each page contains a number of icons, folders or widgets the user can 73 * interact with. A workspace is meant to be used with a fixed width only. 74 */ 75public class Workspace extends SmoothPagedView 76 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 77 DragController.DragListener, LauncherTransitionable { 78 @SuppressWarnings({"UnusedDeclaration"}) 79 private static final String TAG = "Launcher.Workspace"; 80 81 // Y rotation to apply to the workspace screens 82 private static final float WORKSPACE_ROTATION = 12.5f; 83 private static final float WORKSPACE_OVERSCROLL_ROTATION = 24f; 84 private static float CAMERA_DISTANCE = 6500; 85 86 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 87 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 88 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 89 90 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 91 private static final int ADJACENT_SCREEN_DROP_DURATION = 300; 92 private static final int FLING_THRESHOLD_VELOCITY = 500; 93 94 private float mMaxDistanceForFolderCreation = 50.0f; 95 96 // These animators are used to fade the children's outlines 97 private ObjectAnimator mChildrenOutlineFadeInAnimation; 98 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 99 private float mChildrenOutlineAlpha = 0; 100 101 // These properties refer to the background protection gradient used for AllApps and Customize 102 private ValueAnimator mBackgroundFadeInAnimation; 103 private ValueAnimator mBackgroundFadeOutAnimation; 104 private Drawable mBackground; 105 boolean mDrawBackground = true; 106 private float mBackgroundAlpha = 0; 107 private float mOverScrollMaxBackgroundAlpha = 0.0f; 108 private int mOverScrollPageIndex = -1; 109 110 private float mWallpaperScrollRatio = 1.0f; 111 112 private final WallpaperManager mWallpaperManager; 113 private IBinder mWindowToken; 114 private static final float WALLPAPER_SCREENS_SPAN = 2f; 115 116 private int mDefaultPage; 117 118 /** 119 * CellInfo for the cell that is currently being dragged 120 */ 121 private CellLayout.CellInfo mDragInfo; 122 123 /** 124 * Target drop area calculated during last acceptDrop call. 125 */ 126 private int[] mTargetCell = new int[2]; 127 128 /** 129 * The CellLayout that is currently being dragged over 130 */ 131 private CellLayout mDragTargetLayout = null; 132 private boolean mDragHasEnteredWorkspace = false; 133 134 private Launcher mLauncher; 135 private IconCache mIconCache; 136 private DragController mDragController; 137 138 // These are temporary variables to prevent having to allocate a new object just to 139 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 140 private int[] mTempCell = new int[2]; 141 private int[] mTempEstimate = new int[2]; 142 private float[] mDragViewVisualCenter = new float[2]; 143 private float[] mTempDragCoordinates = new float[2]; 144 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 145 private float[] mTempDragBottomRightCoordinates = new float[2]; 146 private Matrix mTempInverseMatrix = new Matrix(); 147 148 private SpringLoadedDragController mSpringLoadedDragController; 149 private float mSpringLoadedShrinkFactor; 150 151 private static final int DEFAULT_CELL_COUNT_X = 4; 152 private static final int DEFAULT_CELL_COUNT_Y = 4; 153 154 // State variable that indicates whether the pages are small (ie when you're 155 // in all apps or customize mode) 156 157 enum State { NORMAL, SPRING_LOADED, SMALL }; 158 private State mState = State.NORMAL; 159 private boolean mIsSwitchingState = false; 160 161 boolean mAnimatingViewIntoPlace = false; 162 boolean mIsDragOccuring = false; 163 boolean mChildrenLayersEnabled = true; 164 165 /** Is the user is dragging an item near the edge of a page? */ 166 private boolean mInScrollArea = false; 167 168 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 169 private Bitmap mDragOutline = null; 170 private final Rect mTempRect = new Rect(); 171 private final int[] mTempXY = new int[2]; 172 private float mOverscrollFade = 0; 173 public static final int DRAG_BITMAP_PADDING = 0; 174 175 // Camera and Matrix used to determine the final position of a neighboring CellLayout 176 private final Matrix mMatrix = new Matrix(); 177 private final Camera mCamera = new Camera(); 178 private final float mTempFloat2[] = new float[2]; 179 180 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 181 int mWallpaperWidth; 182 int mWallpaperHeight; 183 WallpaperOffsetInterpolator mWallpaperOffset; 184 boolean mUpdateWallpaperOffsetImmediately = false; 185 private Runnable mDelayedResizeRunnable; 186 private int mDisplayWidth; 187 private int mDisplayHeight; 188 private boolean mIsStaticWallpaper; 189 private int mWallpaperTravelWidth; 190 191 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 192 private static final int FOLDER_CREATION_TIMEOUT = 0; 193 private static final int REORDER_TIMEOUT = 250; 194 private final Alarm mFolderCreationAlarm = new Alarm(); 195 private final Alarm mReorderAlarm = new Alarm(); 196 private FolderRingAnimator mDragFolderRingAnimator = null; 197 private View mLastDragOverView = null; 198 private boolean mCreateUserFolderOnDrop = false; 199 200 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 201 private float mXDown; 202 private float mYDown; 203 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 204 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 205 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 206 207 // Relating to the animation of items being dropped externally 208 public static final int ANIMATE_INTO_POSITION_AND_DISAPPEAR = 0; 209 public static final int ANIMATE_INTO_POSITION_AND_REMAIN = 1; 210 public static final int ANIMATE_INTO_POSITION_AND_RESIZE = 2; 211 public static final int COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION = 3; 212 public static final int CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION = 4; 213 214 // Related to dragging, folder creation and reordering 215 private static final int DRAG_MODE_NONE = 0; 216 private static final int DRAG_MODE_CREATE_FOLDER = 1; 217 private static final int DRAG_MODE_ADD_TO_FOLDER = 2; 218 private static final int DRAG_MODE_REORDER = 3; 219 private int mDragMode = DRAG_MODE_NONE; 220 private int mLastReorderX = -1; 221 private int mLastReorderY = -1; 222 223 // Relating to workspace drag fade out 224 private float mDragFadeOutAlpha; 225 private int mDragFadeOutDuration; 226 227 // These variables are used for storing the initial and final values during workspace animations 228 private int mSavedScrollX; 229 private float mSavedRotationY; 230 private float mSavedTranslationX; 231 private float mCurrentScaleX; 232 private float mCurrentScaleY; 233 private float mCurrentRotationY; 234 private float mCurrentTranslationX; 235 private float mCurrentTranslationY; 236 private float[] mOldTranslationXs; 237 private float[] mOldTranslationYs; 238 private float[] mOldScaleXs; 239 private float[] mOldScaleYs; 240 private float[] mOldBackgroundAlphas; 241 private float[] mOldBackgroundAlphaMultipliers; 242 private float[] mOldAlphas; 243 private float[] mOldRotationYs; 244 private float[] mNewTranslationXs; 245 private float[] mNewTranslationYs; 246 private float[] mNewScaleXs; 247 private float[] mNewScaleYs; 248 private float[] mNewBackgroundAlphas; 249 private float[] mNewBackgroundAlphaMultipliers; 250 private float[] mNewAlphas; 251 private float[] mNewRotationYs; 252 private float mTransitionProgress; 253 254 /** 255 * Used to inflate the Workspace from XML. 256 * 257 * @param context The application's context. 258 * @param attrs The attributes set containing the Workspace's customization values. 259 */ 260 public Workspace(Context context, AttributeSet attrs) { 261 this(context, attrs, 0); 262 } 263 264 /** 265 * Used to inflate the Workspace from XML. 266 * 267 * @param context The application's context. 268 * @param attrs The attributes set containing the Workspace's customization values. 269 * @param defStyle Unused. 270 */ 271 public Workspace(Context context, AttributeSet attrs, int defStyle) { 272 super(context, attrs, defStyle); 273 mContentIsRefreshable = false; 274 275 // With workspace, data is available straight from the get-go 276 setDataIsReady(); 277 278 final Resources res = getResources(); 279 mFadeInAdjacentScreens = res.getBoolean(R.bool.config_workspaceFadeAdjacentScreens); 280 mDragFadeOutAlpha = res.getInteger(R.integer.config_dragFadeOutAlpha) / 100f; 281 mDragFadeOutDuration = res.getInteger(R.integer.config_dragFadeOutDuration); 282 mWallpaperManager = WallpaperManager.getInstance(context); 283 284 int cellCountX = DEFAULT_CELL_COUNT_X; 285 int cellCountY = DEFAULT_CELL_COUNT_Y; 286 287 TypedArray a = context.obtainStyledAttributes(attrs, 288 R.styleable.Workspace, defStyle, 0); 289 290 if (LauncherApplication.isScreenLarge()) { 291 // Determine number of rows/columns dynamically 292 // TODO: This code currently fails on tablets with an aspect ratio < 1.3. 293 // Around that ratio we should make cells the same size in portrait and 294 // landscape 295 TypedArray actionBarSizeTypedArray = 296 context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize }); 297 DisplayMetrics displayMetrics = res.getDisplayMetrics(); 298 final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); 299 final float systemBarHeight = res.getDimension(R.dimen.status_bar_height); 300 final float smallestScreenDim = res.getConfiguration().smallestScreenWidthDp * 301 displayMetrics.density; 302 303 cellCountX = 1; 304 while (CellLayout.widthInPortrait(res, cellCountX + 1) <= smallestScreenDim) { 305 cellCountX++; 306 } 307 308 cellCountY = 1; 309 while (actionBarHeight + CellLayout.heightInLandscape(res, cellCountY + 1) 310 <= smallestScreenDim - systemBarHeight) { 311 cellCountY++; 312 } 313 } 314 315 mSpringLoadedShrinkFactor = 316 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 317 318 // if the value is manually specified, use that instead 319 cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX); 320 cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY); 321 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 322 a.recycle(); 323 324 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 325 setHapticFeedbackEnabled(false); 326 327 mLauncher = (Launcher) context; 328 initWorkspace(); 329 330 // Disable multitouch across the workspace/all apps/customize tray 331 setMotionEventSplittingEnabled(true); 332 } 333 334 // estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each 335 // dimension if unsuccessful 336 public int[] estimateItemSize(int hSpan, int vSpan, 337 ItemInfo itemInfo, boolean springLoaded) { 338 int[] size = new int[2]; 339 if (getChildCount() > 0) { 340 CellLayout cl = (CellLayout) mLauncher.getWorkspace().getChildAt(0); 341 Rect r = estimateItemPosition(cl, itemInfo, 0, 0, hSpan, vSpan); 342 size[0] = r.width(); 343 size[1] = r.height(); 344 if (springLoaded) { 345 size[0] *= mSpringLoadedShrinkFactor; 346 size[1] *= mSpringLoadedShrinkFactor; 347 } 348 return size; 349 } else { 350 size[0] = Integer.MAX_VALUE; 351 size[1] = Integer.MAX_VALUE; 352 return size; 353 } 354 } 355 public Rect estimateItemPosition(CellLayout cl, ItemInfo pendingInfo, 356 int hCell, int vCell, int hSpan, int vSpan) { 357 Rect r = new Rect(); 358 cl.cellToRect(hCell, vCell, hSpan, vSpan, r); 359 return r; 360 } 361 362 public void buildPageHardwareLayers() { 363 if (getWindowToken() != null) { 364 final int childCount = getChildCount(); 365 for (int i = 0; i < childCount; i++) { 366 CellLayout cl = (CellLayout) getChildAt(i); 367 cl.getShortcutsAndWidgets().buildLayer(); 368 } 369 } 370 } 371 372 public void onDragStart(DragSource source, Object info, int dragAction) { 373 mIsDragOccuring = true; 374 updateChildrenLayersEnabled(); 375 mLauncher.lockScreenOrientationOnLargeUI(); 376 377 // Fade out the workspace slightly to highlight the currently dragging item 378 int count = getChildCount(); 379 for (int i = 0; i < count; i++) { 380 CellLayout cl = (CellLayout) getPageAt(i); 381 cl.getShortcutsAndWidgets().animate().alpha(mDragFadeOutAlpha) 382 .setInterpolator(new AccelerateInterpolator(1.5f)) 383 .setDuration(mDragFadeOutDuration) 384 .start(); 385 } 386 } 387 388 public void onDragEnd() { 389 mIsDragOccuring = false; 390 updateChildrenLayersEnabled(); 391 mLauncher.unlockScreenOrientationOnLargeUI(); 392 393 // Fade the workspace back in after we have completed dragging 394 int count = getChildCount(); 395 for (int i = 0; i < count; i++) { 396 CellLayout cl = (CellLayout) getPageAt(i); 397 cl.getShortcutsAndWidgets().animate().alpha(1f) 398 .setInterpolator(new DecelerateInterpolator(1.5f)) 399 .setDuration(mDragFadeOutDuration) 400 .start(); 401 } 402 } 403 404 /** 405 * Initializes various states for this workspace. 406 */ 407 protected void initWorkspace() { 408 Context context = getContext(); 409 mCurrentPage = mDefaultPage; 410 Launcher.setScreen(mCurrentPage); 411 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 412 mIconCache = app.getIconCache(); 413 setWillNotDraw(false); 414 setChildrenDrawnWithCacheEnabled(true); 415 416 final Resources res = getResources(); 417 try { 418 mBackground = res.getDrawable(R.drawable.apps_customize_bg); 419 } catch (Resources.NotFoundException e) { 420 // In this case, we will skip drawing background protection 421 } 422 423 mWallpaperOffset = new WallpaperOffsetInterpolator(); 424 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 425 mDisplayWidth = display.getWidth(); 426 mDisplayHeight = display.getHeight(); 427 mWallpaperTravelWidth = (int) (mDisplayWidth * 428 wallpaperTravelToScreenWidthRatio(mDisplayWidth, mDisplayHeight)); 429 430 mMaxDistanceForFolderCreation = (0.5f * res.getDimension(R.dimen.app_icon_size)); 431 mFlingThresholdVelocity = (int) (FLING_THRESHOLD_VELOCITY * mDensity); 432 } 433 434 @Override 435 protected int getScrollMode() { 436 return SmoothPagedView.X_LARGE_MODE; 437 } 438 439 @Override 440 protected void onViewAdded(View child) { 441 super.onViewAdded(child); 442 if (!(child instanceof CellLayout)) { 443 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 444 } 445 CellLayout cl = ((CellLayout) child); 446 cl.setOnInterceptTouchListener(this); 447 cl.setClickable(true); 448 cl.enableHardwareLayers(); 449 } 450 451 /** 452 * @return The open folder on the current screen, or null if there is none 453 */ 454 Folder getOpenFolder() { 455 DragLayer dragLayer = mLauncher.getDragLayer(); 456 int count = dragLayer.getChildCount(); 457 for (int i = 0; i < count; i++) { 458 View child = dragLayer.getChildAt(i); 459 if (child instanceof Folder) { 460 Folder folder = (Folder) child; 461 if (folder.getInfo().opened) 462 return folder; 463 } 464 } 465 return null; 466 } 467 468 boolean isTouchActive() { 469 return mTouchState != TOUCH_STATE_REST; 470 } 471 472 /** 473 * Adds the specified child in the specified screen. The position and dimension of 474 * the child are defined by x, y, spanX and spanY. 475 * 476 * @param child The child to add in one of the workspace's screens. 477 * @param screen The screen in which to add the child. 478 * @param x The X position of the child in the screen's grid. 479 * @param y The Y position of the child in the screen's grid. 480 * @param spanX The number of cells spanned horizontally by the child. 481 * @param spanY The number of cells spanned vertically by the child. 482 */ 483 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY) { 484 addInScreen(child, container, screen, x, y, spanX, spanY, false); 485 } 486 487 /** 488 * Adds the specified child in the specified screen. The position and dimension of 489 * the child are defined by x, y, spanX and spanY. 490 * 491 * @param child The child to add in one of the workspace's screens. 492 * @param screen The screen in which to add the child. 493 * @param x The X position of the child in the screen's grid. 494 * @param y The Y position of the child in the screen's grid. 495 * @param spanX The number of cells spanned horizontally by the child. 496 * @param spanY The number of cells spanned vertically by the child. 497 * @param insert When true, the child is inserted at the beginning of the children list. 498 */ 499 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY, 500 boolean insert) { 501 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 502 if (screen < 0 || screen >= getChildCount()) { 503 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 504 + " (was " + screen + "); skipping child"); 505 return; 506 } 507 } 508 509 final CellLayout layout; 510 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 511 layout = mLauncher.getHotseat().getLayout(); 512 child.setOnKeyListener(null); 513 514 // Hide folder title in the hotseat 515 if (child instanceof FolderIcon) { 516 ((FolderIcon) child).setTextVisible(false); 517 } 518 519 if (screen < 0) { 520 screen = mLauncher.getHotseat().getOrderInHotseat(x, y); 521 } else { 522 // Note: We do this to ensure that the hotseat is always laid out in the orientation 523 // of the hotseat in order regardless of which orientation they were added 524 x = mLauncher.getHotseat().getCellXFromOrder(screen); 525 y = mLauncher.getHotseat().getCellYFromOrder(screen); 526 } 527 } else { 528 // Show folder title if not in the hotseat 529 if (child instanceof FolderIcon) { 530 ((FolderIcon) child).setTextVisible(true); 531 } 532 533 layout = (CellLayout) getChildAt(screen); 534 child.setOnKeyListener(new IconKeyEventListener()); 535 } 536 537 LayoutParams genericLp = child.getLayoutParams(); 538 CellLayout.LayoutParams lp; 539 if (genericLp == null || !(genericLp instanceof CellLayout.LayoutParams)) { 540 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 541 } else { 542 lp = (CellLayout.LayoutParams) genericLp; 543 lp.cellX = x; 544 lp.cellY = y; 545 lp.cellHSpan = spanX; 546 lp.cellVSpan = spanY; 547 } 548 549 if (spanX < 0 && spanY < 0) { 550 lp.isLockedToGrid = false; 551 } 552 553 // Get the canonical child id to uniquely represent this view in this screen 554 int childId = LauncherModel.getCellLayoutChildId(container, screen, x, y, spanX, spanY); 555 boolean markCellsAsOccupied = !(child instanceof Folder); 556 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 557 // TODO: This branch occurs when the workspace is adding views 558 // outside of the defined grid 559 // maybe we should be deleting these items from the LauncherModel? 560 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 561 } 562 563 if (!(child instanceof Folder)) { 564 child.setHapticFeedbackEnabled(false); 565 child.setOnLongClickListener(mLongClickListener); 566 } 567 if (child instanceof DropTarget) { 568 mDragController.addDropTarget((DropTarget) child); 569 } 570 } 571 572 /** 573 * Check if the point (x, y) hits a given page. 574 */ 575 private boolean hitsPage(int index, float x, float y) { 576 final View page = getChildAt(index); 577 if (page != null) { 578 float[] localXY = { x, y }; 579 mapPointFromSelfToChild(page, localXY); 580 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 581 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 582 } 583 return false; 584 } 585 586 @Override 587 protected boolean hitsPreviousPage(float x, float y) { 588 // mNextPage is set to INVALID_PAGE whenever we are stationary. 589 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 590 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 591 592 // Only allow tap to next page on large devices, where there's significant margin outside 593 // the active workspace 594 return LauncherApplication.isScreenLarge() && hitsPage(current - 1, x, y); 595 } 596 597 @Override 598 protected boolean hitsNextPage(float x, float y) { 599 // mNextPage is set to INVALID_PAGE whenever we are stationary. 600 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 601 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 602 603 // Only allow tap to next page on large devices, where there's significant margin outside 604 // the active workspace 605 return LauncherApplication.isScreenLarge() && hitsPage(current + 1, x, y); 606 } 607 608 /** 609 * Called directly from a CellLayout (not by the framework), after we've been added as a 610 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 611 * that it should intercept touch events, which is not something that is normally supported. 612 */ 613 @Override 614 public boolean onTouch(View v, MotionEvent event) { 615 return (isSmall() || !isFinishedSwitchingState()); 616 } 617 618 public boolean isSwitchingState() { 619 return mIsSwitchingState; 620 } 621 622 /** This differs from isSwitchingState in that we take into account how far the transition 623 * has completed. */ 624 public boolean isFinishedSwitchingState() { 625 return !mIsSwitchingState || (mTransitionProgress > 0.5f); 626 } 627 628 protected void onWindowVisibilityChanged (int visibility) { 629 mLauncher.onWindowVisibilityChanged(visibility); 630 } 631 632 @Override 633 public boolean dispatchUnhandledMove(View focused, int direction) { 634 if (isSmall() || !isFinishedSwitchingState()) { 635 // when the home screens are shrunken, shouldn't allow side-scrolling 636 return false; 637 } 638 return super.dispatchUnhandledMove(focused, direction); 639 } 640 641 @Override 642 public boolean onInterceptTouchEvent(MotionEvent ev) { 643 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 644 case MotionEvent.ACTION_DOWN: 645 mXDown = ev.getX(); 646 mYDown = ev.getY(); 647 break; 648 case MotionEvent.ACTION_POINTER_UP: 649 case MotionEvent.ACTION_UP: 650 if (mTouchState == TOUCH_STATE_REST) { 651 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 652 if (!currentPage.lastDownOnOccupiedCell()) { 653 onWallpaperTap(ev); 654 } 655 } 656 } 657 return super.onInterceptTouchEvent(ev); 658 } 659 660 @Override 661 protected void determineScrollingStart(MotionEvent ev) { 662 if (isSmall()) return; 663 if (!isFinishedSwitchingState()) return; 664 665 float deltaX = Math.abs(ev.getX() - mXDown); 666 float deltaY = Math.abs(ev.getY() - mYDown); 667 668 if (Float.compare(deltaX, 0f) == 0) return; 669 670 float slope = deltaY / deltaX; 671 float theta = (float) Math.atan(slope); 672 673 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 674 cancelCurrentPageLongPress(); 675 } 676 677 if (theta > MAX_SWIPE_ANGLE) { 678 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 679 return; 680 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 681 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 682 // increase the touch slop to make it harder to begin scrolling the workspace. This 683 // results in vertically scrolling widgets to more easily. The higher the angle, the 684 // more we increase touch slop. 685 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 686 float extraRatio = (float) 687 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 688 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 689 } else { 690 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 691 super.determineScrollingStart(ev); 692 } 693 } 694 695 @Override 696 protected boolean isScrollingIndicatorEnabled() { 697 return mState != State.SPRING_LOADED; 698 } 699 700 protected void onPageBeginMoving() { 701 super.onPageBeginMoving(); 702 703 if (isHardwareAccelerated()) { 704 updateChildrenLayersEnabled(); 705 } else { 706 if (mNextPage != INVALID_PAGE) { 707 // we're snapping to a particular screen 708 enableChildrenCache(mCurrentPage, mNextPage); 709 } else { 710 // this is when user is actively dragging a particular screen, they might 711 // swipe it either left or right (but we won't advance by more than one screen) 712 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 713 } 714 } 715 716 // Only show page outlines as we pan if we are on large screen 717 if (LauncherApplication.isScreenLarge()) { 718 showOutlines(); 719 mIsStaticWallpaper = mWallpaperManager.getWallpaperInfo() == null; 720 } 721 722 // If we are not fading in adjacent screens, we still need to restore the alpha in case the 723 // user scrolls while we are transitioning (should not affect dispatchDraw optimizations) 724 if (!mFadeInAdjacentScreens) { 725 for (int i = 0; i < getChildCount(); ++i) { 726 ((CellLayout) getPageAt(i)).setShortcutAndWidgetAlpha(1f); 727 } 728 } 729 730 // Show the scroll indicator as you pan the page 731 showScrollingIndicator(false); 732 } 733 734 protected void onPageEndMoving() { 735 super.onPageEndMoving(); 736 737 if (isHardwareAccelerated()) { 738 updateChildrenLayersEnabled(); 739 } else { 740 clearChildrenCache(); 741 } 742 743 744 if (mDragController.isDragging()) { 745 if (isSmall()) { 746 // If we are in springloaded mode, then force an event to check if the current touch 747 // is under a new page (to scroll to) 748 mDragController.forceMoveEvent(); 749 } 750 } else { 751 // If we are not mid-dragging, hide the page outlines if we are on a large screen 752 if (LauncherApplication.isScreenLarge()) { 753 hideOutlines(); 754 } 755 756 // Hide the scroll indicator as you pan the page 757 if (!mDragController.isDragging()) { 758 hideScrollingIndicator(false); 759 } 760 } 761 mOverScrollMaxBackgroundAlpha = 0.0f; 762 mOverScrollPageIndex = -1; 763 764 if (mDelayedResizeRunnable != null) { 765 mDelayedResizeRunnable.run(); 766 mDelayedResizeRunnable = null; 767 } 768 } 769 770 @Override 771 protected void notifyPageSwitchListener() { 772 super.notifyPageSwitchListener(); 773 Launcher.setScreen(mCurrentPage); 774 }; 775 776 // As a ratio of screen height, the total distance we want the parallax effect to span 777 // horizontally 778 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 779 float aspectRatio = width / (float) height; 780 781 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 782 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 783 // We will use these two data points to extrapolate how much the wallpaper parallax effect 784 // to span (ie travel) at any aspect ratio: 785 786 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 787 final float ASPECT_RATIO_PORTRAIT = 10/16f; 788 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 789 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 790 791 // To find out the desired width at different aspect ratios, we use the following two 792 // formulas, where the coefficient on x is the aspect ratio (width/height): 793 // (16/10)x + y = 1.5 794 // (10/16)x + y = 1.2 795 // We solve for x and y and end up with a final formula: 796 final float x = 797 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 798 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 799 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 800 return x * aspectRatio + y; 801 } 802 803 // The range of scroll values for Workspace 804 private int getScrollRange() { 805 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 806 } 807 808 protected void setWallpaperDimension() { 809 DisplayMetrics displayMetrics = new DisplayMetrics(); 810 mLauncher.getWindowManager().getDefaultDisplay().getRealMetrics(displayMetrics); 811 final int maxDim = Math.max(displayMetrics.widthPixels, displayMetrics.heightPixels); 812 final int minDim = Math.min(displayMetrics.widthPixels, displayMetrics.heightPixels); 813 814 // We need to ensure that there is enough extra space in the wallpaper for the intended 815 // parallax effects 816 if (LauncherApplication.isScreenLarge()) { 817 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 818 mWallpaperHeight = maxDim; 819 } else { 820 mWallpaperWidth = Math.max((int) (minDim * WALLPAPER_SCREENS_SPAN), maxDim); 821 mWallpaperHeight = maxDim; 822 } 823 new Thread("setWallpaperDimension") { 824 public void run() { 825 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 826 } 827 }.start(); 828 } 829 830 private float wallpaperOffsetForCurrentScroll() { 831 // Set wallpaper offset steps (1 / (number of screens - 1)) 832 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f); 833 834 // For the purposes of computing the scrollRange and overScrollOffset, we assume 835 // that mLayoutScale is 1. This means that when we're in spring-loaded mode, 836 // there's no discrepancy between the wallpaper offset for a given page. 837 float layoutScale = mLayoutScale; 838 mLayoutScale = 1f; 839 int scrollRange = getScrollRange(); 840 841 // Again, we adjust the wallpaper offset to be consistent between values of mLayoutScale 842 float adjustedScrollX = Math.max(0, Math.min(mScrollX, mMaxScrollX)); 843 adjustedScrollX *= mWallpaperScrollRatio; 844 mLayoutScale = layoutScale; 845 846 float scrollProgress = 847 adjustedScrollX / (float) scrollRange; 848 849 if (LauncherApplication.isScreenLarge() && mIsStaticWallpaper) { 850 // The wallpaper travel width is how far, from left to right, the wallpaper will move 851 // at this orientation. On tablets in portrait mode we don't move all the way to the 852 // edges of the wallpaper, or otherwise the parallax effect would be too strong. 853 int wallpaperTravelWidth = Math.min(mWallpaperTravelWidth, mWallpaperWidth); 854 855 float offsetInDips = wallpaperTravelWidth * scrollProgress + 856 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 857 float offset = offsetInDips / (float) mWallpaperWidth; 858 return offset; 859 } else { 860 return scrollProgress; 861 } 862 } 863 864 private void syncWallpaperOffsetWithScroll() { 865 final boolean enableWallpaperEffects = isHardwareAccelerated(); 866 if (enableWallpaperEffects) { 867 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 868 } 869 } 870 871 public void updateWallpaperOffsetImmediately() { 872 mUpdateWallpaperOffsetImmediately = true; 873 } 874 875 private void updateWallpaperOffsets() { 876 boolean updateNow = false; 877 boolean keepUpdating = true; 878 if (mUpdateWallpaperOffsetImmediately) { 879 updateNow = true; 880 keepUpdating = false; 881 mWallpaperOffset.jumpToFinal(); 882 mUpdateWallpaperOffsetImmediately = false; 883 } else { 884 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 885 } 886 if (updateNow) { 887 if (mWindowToken != null) { 888 mWallpaperManager.setWallpaperOffsets(mWindowToken, 889 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 890 } 891 } 892 if (keepUpdating) { 893 invalidate(); 894 } 895 } 896 897 @Override 898 protected void updateCurrentPageScroll() { 899 super.updateCurrentPageScroll(); 900 computeWallpaperScrollRatio(mCurrentPage); 901 } 902 903 @Override 904 protected void snapToPage(int whichPage) { 905 super.snapToPage(whichPage); 906 computeWallpaperScrollRatio(whichPage); 907 } 908 909 private void computeWallpaperScrollRatio(int page) { 910 // Here, we determine what the desired scroll would be with and without a layout scale, 911 // and compute a ratio between the two. This allows us to adjust the wallpaper offset 912 // as though there is no layout scale. 913 float layoutScale = mLayoutScale; 914 int scaled = getChildOffset(page) - getRelativeChildOffset(page); 915 mLayoutScale = 1.0f; 916 float unscaled = getChildOffset(page) - getRelativeChildOffset(page); 917 mLayoutScale = layoutScale; 918 if (scaled > 0) { 919 mWallpaperScrollRatio = (1.0f * unscaled) / scaled; 920 } else { 921 mWallpaperScrollRatio = 1f; 922 } 923 } 924 925 class WallpaperOffsetInterpolator { 926 float mFinalHorizontalWallpaperOffset = 0.0f; 927 float mFinalVerticalWallpaperOffset = 0.5f; 928 float mHorizontalWallpaperOffset = 0.0f; 929 float mVerticalWallpaperOffset = 0.5f; 930 long mLastWallpaperOffsetUpdateTime; 931 boolean mIsMovingFast; 932 boolean mOverrideHorizontalCatchupConstant; 933 float mHorizontalCatchupConstant = 0.35f; 934 float mVerticalCatchupConstant = 0.35f; 935 936 public WallpaperOffsetInterpolator() { 937 } 938 939 public void setOverrideHorizontalCatchupConstant(boolean override) { 940 mOverrideHorizontalCatchupConstant = override; 941 } 942 943 public void setHorizontalCatchupConstant(float f) { 944 mHorizontalCatchupConstant = f; 945 } 946 947 public void setVerticalCatchupConstant(float f) { 948 mVerticalCatchupConstant = f; 949 } 950 951 public boolean computeScrollOffset() { 952 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 953 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 954 mIsMovingFast = false; 955 return false; 956 } 957 boolean isLandscape = mDisplayWidth > mDisplayHeight; 958 959 long currentTime = System.currentTimeMillis(); 960 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 961 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 962 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 963 964 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 965 if (!mIsMovingFast && xdiff > 0.07) { 966 mIsMovingFast = true; 967 } 968 969 float fractionToCatchUpIn1MsHorizontal; 970 if (mOverrideHorizontalCatchupConstant) { 971 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 972 } else if (mIsMovingFast) { 973 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 974 } else { 975 // slow 976 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 977 } 978 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 979 980 fractionToCatchUpIn1MsHorizontal /= 33f; 981 fractionToCatchUpIn1MsVertical /= 33f; 982 983 final float UPDATE_THRESHOLD = 0.00001f; 984 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 985 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 986 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 987 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 988 989 // Don't have any lag between workspace and wallpaper on non-large devices 990 if (!LauncherApplication.isScreenLarge() || jumpToFinalValue) { 991 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 992 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 993 } else { 994 float percentToCatchUpVertical = 995 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 996 float percentToCatchUpHorizontal = 997 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 998 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 999 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 1000 } 1001 1002 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 1003 return true; 1004 } 1005 1006 public float getCurrX() { 1007 return mHorizontalWallpaperOffset; 1008 } 1009 1010 public float getFinalX() { 1011 return mFinalHorizontalWallpaperOffset; 1012 } 1013 1014 public float getCurrY() { 1015 return mVerticalWallpaperOffset; 1016 } 1017 1018 public float getFinalY() { 1019 return mFinalVerticalWallpaperOffset; 1020 } 1021 1022 public void setFinalX(float x) { 1023 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 1024 } 1025 1026 public void setFinalY(float y) { 1027 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 1028 } 1029 1030 public void jumpToFinal() { 1031 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 1032 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 1033 } 1034 } 1035 1036 @Override 1037 public void computeScroll() { 1038 super.computeScroll(); 1039 syncWallpaperOffsetWithScroll(); 1040 } 1041 1042 void showOutlines() { 1043 if (!isSmall() && !mIsSwitchingState) { 1044 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1045 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1046 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 1047 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 1048 mChildrenOutlineFadeInAnimation.start(); 1049 } 1050 } 1051 1052 void hideOutlines() { 1053 if (!isSmall() && !mIsSwitchingState) { 1054 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1055 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1056 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 1057 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 1058 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 1059 mChildrenOutlineFadeOutAnimation.start(); 1060 } 1061 } 1062 1063 public void showOutlinesTemporarily() { 1064 if (!mIsPageMoving && !isTouchActive()) { 1065 snapToPage(mCurrentPage); 1066 } 1067 } 1068 1069 public void setChildrenOutlineAlpha(float alpha) { 1070 mChildrenOutlineAlpha = alpha; 1071 for (int i = 0; i < getChildCount(); i++) { 1072 CellLayout cl = (CellLayout) getChildAt(i); 1073 cl.setBackgroundAlpha(alpha); 1074 } 1075 } 1076 1077 public float getChildrenOutlineAlpha() { 1078 return mChildrenOutlineAlpha; 1079 } 1080 1081 void disableBackground() { 1082 mDrawBackground = false; 1083 } 1084 void enableBackground() { 1085 mDrawBackground = true; 1086 } 1087 1088 private void animateBackgroundGradient(float finalAlpha, boolean animated) { 1089 if (mBackground == null) return; 1090 if (mBackgroundFadeInAnimation != null) { 1091 mBackgroundFadeInAnimation.cancel(); 1092 mBackgroundFadeInAnimation = null; 1093 } 1094 if (mBackgroundFadeOutAnimation != null) { 1095 mBackgroundFadeOutAnimation.cancel(); 1096 mBackgroundFadeOutAnimation = null; 1097 } 1098 float startAlpha = getBackgroundAlpha(); 1099 if (finalAlpha != startAlpha) { 1100 if (animated) { 1101 mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(startAlpha, finalAlpha); 1102 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1103 public void onAnimationUpdate(ValueAnimator animation) { 1104 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1105 } 1106 }); 1107 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1108 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1109 mBackgroundFadeOutAnimation.start(); 1110 } else { 1111 setBackgroundAlpha(finalAlpha); 1112 } 1113 } 1114 } 1115 1116 public void setBackgroundAlpha(float alpha) { 1117 if (alpha != mBackgroundAlpha) { 1118 mBackgroundAlpha = alpha; 1119 invalidate(); 1120 } 1121 } 1122 1123 public float getBackgroundAlpha() { 1124 return mBackgroundAlpha; 1125 } 1126 1127 /** 1128 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 1129 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 1130 * as being larger. This method computes what offset the rotated view should be translated 1131 * in order to minimize this perceived gap. 1132 * @param degrees Angle of the view 1133 * @param width Width of the view 1134 * @param height Height of the view 1135 * @return Offset to be used in a View.setTranslationX() call 1136 */ 1137 private float getOffsetXForRotation(float degrees, int width, int height) { 1138 mMatrix.reset(); 1139 mCamera.save(); 1140 mCamera.rotateY(Math.abs(degrees)); 1141 mCamera.getMatrix(mMatrix); 1142 mCamera.restore(); 1143 1144 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 1145 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 1146 mTempFloat2[0] = width; 1147 mTempFloat2[1] = height; 1148 mMatrix.mapPoints(mTempFloat2); 1149 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 1150 } 1151 1152 float backgroundAlphaInterpolator(float r) { 1153 float pivotA = 0.1f; 1154 float pivotB = 0.4f; 1155 if (r < pivotA) { 1156 return 0; 1157 } else if (r > pivotB) { 1158 return 1.0f; 1159 } else { 1160 return (r - pivotA)/(pivotB - pivotA); 1161 } 1162 } 1163 1164 float overScrollBackgroundAlphaInterpolator(float r) { 1165 float threshold = 0.08f; 1166 1167 if (r > mOverScrollMaxBackgroundAlpha) { 1168 mOverScrollMaxBackgroundAlpha = r; 1169 } else if (r < mOverScrollMaxBackgroundAlpha) { 1170 r = mOverScrollMaxBackgroundAlpha; 1171 } 1172 1173 return Math.min(r / threshold, 1.0f); 1174 } 1175 1176 private void screenScrolledLargeUI(int screenCenter) { 1177 if (isSwitchingState()) return; 1178 boolean isInOverscroll = false; 1179 for (int i = 0; i < getChildCount(); i++) { 1180 CellLayout cl = (CellLayout) getChildAt(i); 1181 if (cl != null) { 1182 float scrollProgress = getScrollProgress(screenCenter, cl, i); 1183 float rotation = WORKSPACE_ROTATION * scrollProgress; 1184 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1185 1186 // If the current page (i) is being over scrolled, we use a different 1187 // set of rules for setting the background alpha multiplier. 1188 if (!isSmall()) { 1189 if ((mOverScrollX < 0 && i == 0) || (mOverScrollX > mMaxScrollX && 1190 i == getChildCount() -1)) { 1191 isInOverscroll = true; 1192 rotation *= -1; 1193 cl.setBackgroundAlphaMultiplier( 1194 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 1195 mOverScrollPageIndex = i; 1196 cl.setOverScrollAmount(Math.abs(scrollProgress), i == 0); 1197 cl.setPivotX(cl.getMeasuredWidth() * (i == 0 ? 0.75f : 0.25f)); 1198 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1199 cl.setOverscrollTransformsDirty(true); 1200 } else if (mOverScrollPageIndex != i) { 1201 cl.setBackgroundAlphaMultiplier( 1202 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1203 } 1204 } 1205 cl.setTranslationX(translationX); 1206 cl.setRotationY(rotation); 1207 if (mFadeInAdjacentScreens && !isSmall()) { 1208 float alpha = 1 - Math.abs(scrollProgress); 1209 cl.setShortcutAndWidgetAlpha(alpha); 1210 } 1211 } 1212 } 1213 if (!isSwitchingState() && !isInOverscroll) { 1214 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1215 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1216 } 1217 invalidate(); 1218 } 1219 1220 private void screenScrolledStandardUI(int screenCenter) { 1221 if (mOverScrollX < 0 || mOverScrollX > mMaxScrollX) { 1222 int index = mOverScrollX < 0 ? 0 : getChildCount() - 1; 1223 CellLayout cl = (CellLayout) getChildAt(index); 1224 float scrollProgress = getScrollProgress(screenCenter, cl, index); 1225 cl.setOverScrollAmount(Math.abs(scrollProgress), index == 0); 1226 float rotation = - WORKSPACE_OVERSCROLL_ROTATION * scrollProgress; 1227 cl.setCameraDistance(mDensity * CAMERA_DISTANCE); 1228 cl.setPivotX(cl.getMeasuredWidth() * (index == 0 ? 0.75f : 0.25f)); 1229 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1230 cl.setRotationY(rotation); 1231 cl.setOverscrollTransformsDirty(true); 1232 setFadeForOverScroll(Math.abs(scrollProgress)); 1233 } else { 1234 if (mOverscrollFade != 0) { 1235 setFadeForOverScroll(0); 1236 } 1237 // We don't want to mess with the translations during transitions 1238 if (!isSwitchingState()) { 1239 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1240 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1241 } 1242 } 1243 } 1244 1245 @Override 1246 protected void screenScrolled(int screenCenter) { 1247 if (LauncherApplication.isScreenLarge()) { 1248 // We don't call super.screenScrolled() here because we handle the adjacent pages alpha 1249 // ourselves (for efficiency), and there are no scrolling indicators to update. 1250 screenScrolledLargeUI(screenCenter); 1251 } else { 1252 super.screenScrolled(screenCenter); 1253 screenScrolledStandardUI(screenCenter); 1254 } 1255 } 1256 1257 @Override 1258 protected void overScroll(float amount) { 1259 if (LauncherApplication.isScreenLarge()) { 1260 dampedOverScroll(amount); 1261 } else { 1262 acceleratedOverScroll(amount); 1263 } 1264 } 1265 1266 protected void onAttachedToWindow() { 1267 super.onAttachedToWindow(); 1268 mWindowToken = getWindowToken(); 1269 computeScroll(); 1270 mDragController.setWindowToken(mWindowToken); 1271 } 1272 1273 protected void onDetachedFromWindow() { 1274 mWindowToken = null; 1275 } 1276 1277 @Override 1278 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1279 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1280 mUpdateWallpaperOffsetImmediately = true; 1281 } 1282 super.onLayout(changed, left, top, right, bottom); 1283 } 1284 1285 @Override 1286 protected void onDraw(Canvas canvas) { 1287 updateWallpaperOffsets(); 1288 1289 // Draw the background gradient if necessary 1290 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1291 int alpha = (int) (mBackgroundAlpha * 255); 1292 mBackground.setAlpha(alpha); 1293 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1294 getMeasuredHeight()); 1295 mBackground.draw(canvas); 1296 } 1297 1298 super.onDraw(canvas); 1299 } 1300 1301 boolean isDrawingBackgroundGradient() { 1302 return (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground); 1303 } 1304 1305 @Override 1306 protected void dispatchDraw(Canvas canvas) { 1307 super.dispatchDraw(canvas); 1308 1309 if (mInScrollArea && !LauncherApplication.isScreenLarge()) { 1310 final int width = getWidth(); 1311 final int height = getHeight(); 1312 final int pageHeight = getChildAt(0).getHeight(); 1313 1314 // Set the height of the outline to be the height of the page 1315 final int offset = (height - pageHeight - mPaddingTop - mPaddingBottom) / 2; 1316 final int paddingTop = mPaddingTop + offset; 1317 final int paddingBottom = mPaddingBottom + offset; 1318 1319 final int page = (mNextPage != INVALID_PAGE ? mNextPage : mCurrentPage); 1320 final CellLayout leftPage = (CellLayout) getChildAt(page - 1); 1321 final CellLayout rightPage = (CellLayout) getChildAt(page + 1); 1322 1323 if (leftPage != null && leftPage.getIsDragOverlapping()) { 1324 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left_holo); 1325 d.setBounds(mScrollX, paddingTop, mScrollX + d.getIntrinsicWidth(), 1326 height - paddingBottom); 1327 d.draw(canvas); 1328 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 1329 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right_holo); 1330 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), paddingTop, mScrollX + width, 1331 height - paddingBottom); 1332 d.draw(canvas); 1333 } 1334 } 1335 } 1336 1337 @Override 1338 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1339 if (!mLauncher.isAllAppsVisible()) { 1340 final Folder openFolder = getOpenFolder(); 1341 if (openFolder != null) { 1342 return openFolder.requestFocus(direction, previouslyFocusedRect); 1343 } else { 1344 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1345 } 1346 } 1347 return false; 1348 } 1349 1350 @Override 1351 public int getDescendantFocusability() { 1352 if (isSmall()) { 1353 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1354 } 1355 return super.getDescendantFocusability(); 1356 } 1357 1358 @Override 1359 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1360 if (!mLauncher.isAllAppsVisible()) { 1361 final Folder openFolder = getOpenFolder(); 1362 if (openFolder != null) { 1363 openFolder.addFocusables(views, direction); 1364 } else { 1365 super.addFocusables(views, direction, focusableMode); 1366 } 1367 } 1368 } 1369 1370 public boolean isSmall() { 1371 return mState == State.SMALL || mState == State.SPRING_LOADED; 1372 } 1373 1374 void enableChildrenCache(int fromPage, int toPage) { 1375 if (fromPage > toPage) { 1376 final int temp = fromPage; 1377 fromPage = toPage; 1378 toPage = temp; 1379 } 1380 1381 final int screenCount = getChildCount(); 1382 1383 fromPage = Math.max(fromPage, 0); 1384 toPage = Math.min(toPage, screenCount - 1); 1385 1386 for (int i = fromPage; i <= toPage; i++) { 1387 final CellLayout layout = (CellLayout) getChildAt(i); 1388 layout.setChildrenDrawnWithCacheEnabled(true); 1389 layout.setChildrenDrawingCacheEnabled(true); 1390 } 1391 } 1392 1393 void clearChildrenCache() { 1394 final int screenCount = getChildCount(); 1395 for (int i = 0; i < screenCount; i++) { 1396 final CellLayout layout = (CellLayout) getChildAt(i); 1397 layout.setChildrenDrawnWithCacheEnabled(false); 1398 // In software mode, we don't want the items to continue to be drawn into bitmaps 1399 if (!isHardwareAccelerated()) { 1400 layout.setChildrenDrawingCacheEnabled(false); 1401 } 1402 } 1403 } 1404 1405 private void updateChildrenLayersEnabled() { 1406 boolean small = isSmall() || mIsSwitchingState; 1407 boolean dragging = mAnimatingViewIntoPlace || mIsDragOccuring; 1408 boolean enableChildrenLayers = small || dragging || isPageMoving(); 1409 1410 if (enableChildrenLayers != mChildrenLayersEnabled) { 1411 mChildrenLayersEnabled = enableChildrenLayers; 1412 for (int i = 0; i < getPageCount(); i++) { 1413 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(mChildrenLayersEnabled); 1414 } 1415 } 1416 } 1417 1418 protected void onWallpaperTap(MotionEvent ev) { 1419 final int[] position = mTempCell; 1420 getLocationOnScreen(position); 1421 1422 int pointerIndex = ev.getActionIndex(); 1423 position[0] += (int) ev.getX(pointerIndex); 1424 position[1] += (int) ev.getY(pointerIndex); 1425 1426 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1427 ev.getAction() == MotionEvent.ACTION_UP 1428 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1429 position[0], position[1], 0, null); 1430 } 1431 1432 /* 1433 * This interpolator emulates the rate at which the perceived scale of an object changes 1434 * as its distance from a camera increases. When this interpolator is applied to a scale 1435 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1436 * from the camera. 1437 */ 1438 static class ZInterpolator implements TimeInterpolator { 1439 private float focalLength; 1440 1441 public ZInterpolator(float foc) { 1442 focalLength = foc; 1443 } 1444 1445 public float getInterpolation(float input) { 1446 return (1.0f - focalLength / (focalLength + input)) / 1447 (1.0f - focalLength / (focalLength + 1.0f)); 1448 } 1449 } 1450 1451 /* 1452 * The exact reverse of ZInterpolator. 1453 */ 1454 static class InverseZInterpolator implements TimeInterpolator { 1455 private ZInterpolator zInterpolator; 1456 public InverseZInterpolator(float foc) { 1457 zInterpolator = new ZInterpolator(foc); 1458 } 1459 public float getInterpolation(float input) { 1460 return 1 - zInterpolator.getInterpolation(1 - input); 1461 } 1462 } 1463 1464 /* 1465 * ZInterpolator compounded with an ease-out. 1466 */ 1467 static class ZoomOutInterpolator implements TimeInterpolator { 1468 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(0.75f); 1469 private final ZInterpolator zInterpolator = new ZInterpolator(0.13f); 1470 1471 public float getInterpolation(float input) { 1472 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1473 } 1474 } 1475 1476 /* 1477 * InvereZInterpolator compounded with an ease-out. 1478 */ 1479 static class ZoomInInterpolator implements TimeInterpolator { 1480 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1481 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1482 1483 public float getInterpolation(float input) { 1484 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1485 } 1486 } 1487 1488 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1489 1490 /* 1491 * 1492 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1493 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1494 * 1495 * These methods mark the appropriate pages as accepting drops (which alters their visual 1496 * appearance). 1497 * 1498 */ 1499 public void onDragStartedWithItem(View v) { 1500 final Canvas canvas = new Canvas(); 1501 1502 // The outline is used to visualize where the item will land if dropped 1503 mDragOutline = createDragOutline(v, canvas, DRAG_BITMAP_PADDING); 1504 } 1505 1506 public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, Paint alphaClipPaint) { 1507 final Canvas canvas = new Canvas(); 1508 1509 int[] size = estimateItemSize(info.spanX, info.spanY, info, false); 1510 1511 // The outline is used to visualize where the item will land if dropped 1512 mDragOutline = createDragOutline(b, canvas, DRAG_BITMAP_PADDING, size[0], 1513 size[1], alphaClipPaint); 1514 } 1515 1516 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1517 // never dragged over 1518 public void onDragStopped(boolean success) { 1519 // In the success case, DragController has already called onDragExit() 1520 if (!success) { 1521 doDragExit(null); 1522 } 1523 } 1524 1525 public void exitWidgetResizeMode() { 1526 DragLayer dragLayer = mLauncher.getDragLayer(); 1527 dragLayer.clearAllResizeFrames(); 1528 } 1529 1530 private void initAnimationArrays() { 1531 final int childCount = getChildCount(); 1532 if (mOldTranslationXs != null) return; 1533 mOldTranslationXs = new float[childCount]; 1534 mOldTranslationYs = new float[childCount]; 1535 mOldScaleXs = new float[childCount]; 1536 mOldScaleYs = new float[childCount]; 1537 mOldBackgroundAlphas = new float[childCount]; 1538 mOldBackgroundAlphaMultipliers = new float[childCount]; 1539 mOldAlphas = new float[childCount]; 1540 mOldRotationYs = new float[childCount]; 1541 mNewTranslationXs = new float[childCount]; 1542 mNewTranslationYs = new float[childCount]; 1543 mNewScaleXs = new float[childCount]; 1544 mNewScaleYs = new float[childCount]; 1545 mNewBackgroundAlphas = new float[childCount]; 1546 mNewBackgroundAlphaMultipliers = new float[childCount]; 1547 mNewAlphas = new float[childCount]; 1548 mNewRotationYs = new float[childCount]; 1549 } 1550 1551 Animator getChangeStateAnimation(final State state, boolean animated) { 1552 return getChangeStateAnimation(state, animated, 0); 1553 } 1554 1555 Animator getChangeStateAnimation(final State state, boolean animated, int delay) { 1556 if (mState == state) { 1557 return null; 1558 } 1559 1560 // Initialize animation arrays for the first time if necessary 1561 initAnimationArrays(); 1562 1563 AnimatorSet anim = animated ? new AnimatorSet() : null; 1564 1565 // Stop any scrolling, move to the current page right away 1566 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1567 1568 final State oldState = mState; 1569 final boolean oldStateIsNormal = (oldState == State.NORMAL); 1570 final boolean oldStateIsSmall = (oldState == State.SMALL); 1571 mState = state; 1572 final boolean stateIsNormal = (state == State.NORMAL); 1573 final boolean stateIsSpringLoaded = (state == State.SPRING_LOADED); 1574 final boolean stateIsSmall = (state == State.SMALL); 1575 float finalScaleFactor = 1.0f; 1576 float finalBackgroundAlpha = stateIsSpringLoaded ? 1.0f : 0f; 1577 float translationX = 0; 1578 float translationY = 0; 1579 boolean zoomIn = true; 1580 1581 if (state != State.NORMAL) { 1582 finalScaleFactor = mSpringLoadedShrinkFactor - (stateIsSmall ? 0.1f : 0); 1583 if (oldStateIsNormal && stateIsSmall) { 1584 zoomIn = false; 1585 setLayoutScale(finalScaleFactor); 1586 updateChildrenLayersEnabled(); 1587 } else { 1588 finalBackgroundAlpha = 1.0f; 1589 setLayoutScale(finalScaleFactor); 1590 } 1591 } else { 1592 setLayoutScale(1.0f); 1593 } 1594 1595 final int duration = zoomIn ? 1596 getResources().getInteger(R.integer.config_workspaceUnshrinkTime) : 1597 getResources().getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1598 for (int i = 0; i < getChildCount(); i++) { 1599 final CellLayout cl = (CellLayout) getChildAt(i); 1600 float rotation = 0f; 1601 float initialAlpha = cl.getAlpha(); 1602 float finalAlphaMultiplierValue = 1f; 1603 float finalAlpha = (!mFadeInAdjacentScreens || stateIsSpringLoaded || 1604 (i == mCurrentPage)) ? 1f : 0f; 1605 1606 // Determine the pages alpha during the state transition 1607 if ((oldStateIsSmall && stateIsNormal) || 1608 (oldStateIsNormal && stateIsSmall)) { 1609 // To/from workspace - only show the current page unless the transition is not 1610 // animated and the animation end callback below doesn't run 1611 if (i == mCurrentPage || !animated) { 1612 finalAlpha = 1f; 1613 finalAlphaMultiplierValue = 0f; 1614 } else { 1615 initialAlpha = 0f; 1616 finalAlpha = 0f; 1617 } 1618 } 1619 1620 // Update the rotation of the screen (don't apply rotation on Phone UI) 1621 if (LauncherApplication.isScreenLarge()) { 1622 if (i < mCurrentPage) { 1623 rotation = WORKSPACE_ROTATION; 1624 } else if (i > mCurrentPage) { 1625 rotation = -WORKSPACE_ROTATION; 1626 } 1627 } 1628 1629 // If the screen is not xlarge, then don't rotate the CellLayouts 1630 // NOTE: If we don't update the side pages alpha, then we should not hide the side 1631 // pages. see unshrink(). 1632 if (LauncherApplication.isScreenLarge()) { 1633 translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1634 } 1635 1636 mOldAlphas[i] = initialAlpha; 1637 mNewAlphas[i] = finalAlpha; 1638 if (animated) { 1639 mOldTranslationXs[i] = cl.getTranslationX(); 1640 mOldTranslationYs[i] = cl.getTranslationY(); 1641 mOldScaleXs[i] = cl.getScaleX(); 1642 mOldScaleYs[i] = cl.getScaleY(); 1643 mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1644 mOldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1645 mOldRotationYs[i] = cl.getRotationY(); 1646 1647 mNewTranslationXs[i] = translationX; 1648 mNewTranslationYs[i] = translationY; 1649 mNewScaleXs[i] = finalScaleFactor; 1650 mNewScaleYs[i] = finalScaleFactor; 1651 mNewBackgroundAlphas[i] = finalBackgroundAlpha; 1652 mNewBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1653 mNewRotationYs[i] = rotation; 1654 } else { 1655 cl.setTranslationX(translationX); 1656 cl.setTranslationY(translationY); 1657 cl.setScaleX(finalScaleFactor); 1658 cl.setScaleY(finalScaleFactor); 1659 cl.setBackgroundAlpha(finalBackgroundAlpha); 1660 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1661 cl.setShortcutAndWidgetAlpha(finalAlpha); 1662 cl.setRotationY(rotation); 1663 } 1664 } 1665 1666 if (animated) { 1667 for (int index = 0; index < getChildCount(); index++) { 1668 final int i = index; 1669 final CellLayout cl = (CellLayout) getChildAt(i); 1670 if (mOldAlphas[i] == 0 && mNewAlphas[i] == 0) { 1671 cl.setTranslationX(mNewTranslationXs[i]); 1672 cl.setTranslationY(mNewTranslationYs[i]); 1673 cl.setScaleX(mNewScaleXs[i]); 1674 cl.setScaleY(mNewScaleYs[i]); 1675 cl.setBackgroundAlpha(mNewBackgroundAlphas[i]); 1676 cl.setBackgroundAlphaMultiplier(mNewBackgroundAlphaMultipliers[i]); 1677 cl.setShortcutAndWidgetAlpha(mNewAlphas[i]); 1678 cl.setRotationY(mNewRotationYs[i]); 1679 } else { 1680 LauncherViewPropertyAnimator a = new LauncherViewPropertyAnimator(cl); 1681 a.translationX(mNewTranslationXs[i]) 1682 .translationY(mNewTranslationYs[i]) 1683 .scaleX(mNewScaleXs[i]) 1684 .scaleY(mNewScaleYs[i]) 1685 .setDuration(duration) 1686 .setInterpolator(mZoomInInterpolator); 1687 anim.play(a); 1688 1689 LauncherViewPropertyAnimator alphaAnim = 1690 new LauncherViewPropertyAnimator(cl.getShortcutsAndWidgets()); 1691 if (mOldAlphas[i] != mNewAlphas[i]) { 1692 alphaAnim.alpha(mNewAlphas[i]) 1693 .setDuration(duration) 1694 .setInterpolator(mZoomInInterpolator); 1695 anim.play(alphaAnim); 1696 } 1697 if (mOldRotationYs[i] != 0 || mNewRotationYs[i] != 0) { 1698 ValueAnimator rotate = ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1699 rotate.setInterpolator(new DecelerateInterpolator(2.0f)); 1700 rotate.addUpdateListener(new LauncherAnimatorUpdateListener() { 1701 public void onAnimationUpdate(float a, float b) { 1702 cl.setRotationY(a * mOldRotationYs[i] + b * mNewRotationYs[i]); 1703 } 1704 }); 1705 anim.play(rotate); 1706 } 1707 if (mOldBackgroundAlphas[i] != 0 || 1708 mNewBackgroundAlphas[i] != 0 || 1709 mOldBackgroundAlphaMultipliers[i] != 0 || 1710 mNewBackgroundAlphaMultipliers[i] != 0) { 1711 ValueAnimator bgAnim = ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1712 bgAnim.setInterpolator(mZoomInInterpolator); 1713 bgAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1714 public void onAnimationUpdate(float a, float b) { 1715 cl.setBackgroundAlpha( 1716 a * mOldBackgroundAlphas[i] + 1717 b * mNewBackgroundAlphas[i]); 1718 cl.setBackgroundAlphaMultiplier( 1719 a * mOldBackgroundAlphaMultipliers[i] + 1720 b * mNewBackgroundAlphaMultipliers[i]); 1721 } 1722 }); 1723 anim.play(bgAnim); 1724 } 1725 } 1726 } 1727 anim.setStartDelay(delay); 1728 } 1729 1730 if (stateIsSpringLoaded) { 1731 // Right now we're covered by Apps Customize 1732 // Show the background gradient immediately, so the gradient will 1733 // be showing once AppsCustomize disappears 1734 animateBackgroundGradient(getResources().getInteger( 1735 R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, false); 1736 } else { 1737 // Fade the background gradient away 1738 animateBackgroundGradient(0f, true); 1739 } 1740 return anim; 1741 } 1742 1743 @Override 1744 public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) { 1745 mIsSwitchingState = true; 1746 } 1747 1748 @Override 1749 public void onLauncherTransitionStep(Launcher l, float t) { 1750 mTransitionProgress = t; 1751 } 1752 1753 @Override 1754 public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) { 1755 mIsSwitchingState = false; 1756 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 1757 updateChildrenLayersEnabled(); 1758 // The code in getChangeStateAnimation to determine initialAlpha and finalAlpha will ensure 1759 // ensure that only the current page is visible during (and subsequently, after) the 1760 // transition animation. If fade adjacent pages is disabled, then re-enable the page 1761 // visibility after the transition animation. 1762 if (!mFadeInAdjacentScreens) { 1763 for (int i = 0; i < getChildCount(); i++) { 1764 final CellLayout cl = (CellLayout) getChildAt(i); 1765 cl.setShortcutAndWidgetAlpha(1f); 1766 } 1767 } 1768 } 1769 1770 @Override 1771 public View getContent() { 1772 return this; 1773 } 1774 1775 /** 1776 * Draw the View v into the given Canvas. 1777 * 1778 * @param v the view to draw 1779 * @param destCanvas the canvas to draw on 1780 * @param padding the horizontal and vertical padding to use when drawing 1781 */ 1782 private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { 1783 final Rect clipRect = mTempRect; 1784 v.getDrawingRect(clipRect); 1785 1786 boolean textVisible = false; 1787 1788 destCanvas.save(); 1789 if (v instanceof TextView && pruneToDrawable) { 1790 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1791 clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); 1792 destCanvas.translate(padding / 2, padding / 2); 1793 d.draw(destCanvas); 1794 } else { 1795 if (v instanceof FolderIcon) { 1796 // For FolderIcons the text can bleed into the icon area, and so we need to 1797 // hide the text completely (which can't be achieved by clipping). 1798 if (((FolderIcon) v).getTextVisible()) { 1799 ((FolderIcon) v).setTextVisible(false); 1800 textVisible = true; 1801 } 1802 } else if (v instanceof BubbleTextView) { 1803 final BubbleTextView tv = (BubbleTextView) v; 1804 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1805 tv.getLayout().getLineTop(0); 1806 } else if (v instanceof TextView) { 1807 final TextView tv = (TextView) v; 1808 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1809 tv.getLayout().getLineTop(0); 1810 } 1811 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1812 destCanvas.clipRect(clipRect, Op.REPLACE); 1813 v.draw(destCanvas); 1814 1815 // Restore text visibility of FolderIcon if necessary 1816 if (textVisible) { 1817 ((FolderIcon) v).setTextVisible(true); 1818 } 1819 } 1820 destCanvas.restore(); 1821 } 1822 1823 /** 1824 * Returns a new bitmap to show when the given View is being dragged around. 1825 * Responsibility for the bitmap is transferred to the caller. 1826 */ 1827 public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1828 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1829 Bitmap b; 1830 1831 if (v instanceof TextView) { 1832 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1833 b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, 1834 d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); 1835 } else { 1836 b = Bitmap.createBitmap( 1837 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1838 } 1839 1840 canvas.setBitmap(b); 1841 drawDragView(v, canvas, padding, true); 1842 canvas.setBitmap(null); 1843 1844 return b; 1845 } 1846 1847 /** 1848 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1849 * Responsibility for the bitmap is transferred to the caller. 1850 */ 1851 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1852 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1853 final Bitmap b = Bitmap.createBitmap( 1854 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1855 1856 canvas.setBitmap(b); 1857 drawDragView(v, canvas, padding, true); 1858 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1859 canvas.setBitmap(null); 1860 return b; 1861 } 1862 1863 /** 1864 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1865 * Responsibility for the bitmap is transferred to the caller. 1866 */ 1867 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h, 1868 Paint alphaClipPaint) { 1869 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1870 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1871 canvas.setBitmap(b); 1872 1873 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 1874 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 1875 (h - padding) / (float) orig.getHeight()); 1876 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 1877 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 1878 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 1879 1880 // center the image 1881 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 1882 1883 canvas.drawBitmap(orig, src, dst, null); 1884 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor, 1885 alphaClipPaint); 1886 canvas.setBitmap(null); 1887 1888 return b; 1889 } 1890 1891 void startDrag(CellLayout.CellInfo cellInfo) { 1892 View child = cellInfo.cell; 1893 1894 // Make sure the drag was started by a long press as opposed to a long click. 1895 if (!child.isInTouchMode()) { 1896 return; 1897 } 1898 1899 mDragInfo = cellInfo; 1900 child.setVisibility(INVISIBLE); 1901 CellLayout layout = (CellLayout) child.getParent().getParent(); 1902 layout.prepareChildForDrag(child); 1903 1904 child.clearFocus(); 1905 child.setPressed(false); 1906 1907 final Canvas canvas = new Canvas(); 1908 1909 // The outline is used to visualize where the item will land if dropped 1910 mDragOutline = createDragOutline(child, canvas, DRAG_BITMAP_PADDING); 1911 beginDragShared(child, this); 1912 } 1913 1914 public void beginDragShared(View child, DragSource source) { 1915 Resources r = getResources(); 1916 1917 // The drag bitmap follows the touch point around on the screen 1918 final Bitmap b = createDragBitmap(child, new Canvas(), DRAG_BITMAP_PADDING); 1919 1920 final int bmpWidth = b.getWidth(); 1921 final int bmpHeight = b.getHeight(); 1922 1923 mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 1924 int dragLayerX = 1925 Math.round(mTempXY[0] - (bmpWidth - child.getScaleX() * child.getWidth()) / 2); 1926 int dragLayerY = 1927 Math.round(mTempXY[1] - (bmpHeight - child.getScaleY() * bmpHeight) / 2 1928 - DRAG_BITMAP_PADDING / 2); 1929 1930 Point dragVisualizeOffset = null; 1931 Rect dragRect = null; 1932 if (child instanceof BubbleTextView || child instanceof PagedViewIcon) { 1933 int iconSize = r.getDimensionPixelSize(R.dimen.app_icon_size); 1934 int iconPaddingTop = r.getDimensionPixelSize(R.dimen.app_icon_padding_top); 1935 int top = child.getPaddingTop(); 1936 int left = (bmpWidth - iconSize) / 2; 1937 int right = left + iconSize; 1938 int bottom = top + iconSize; 1939 dragLayerY += top; 1940 // Note: The drag region is used to calculate drag layer offsets, but the 1941 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 1942 dragVisualizeOffset = new Point(-DRAG_BITMAP_PADDING / 2, 1943 iconPaddingTop - DRAG_BITMAP_PADDING / 2); 1944 dragRect = new Rect(left, top, right, bottom); 1945 } else if (child instanceof FolderIcon) { 1946 int previewSize = r.getDimensionPixelSize(R.dimen.folder_preview_size); 1947 dragRect = new Rect(0, 0, child.getWidth(), previewSize); 1948 } 1949 1950 // Clear the pressed state if necessary 1951 if (child instanceof BubbleTextView) { 1952 BubbleTextView icon = (BubbleTextView) child; 1953 icon.clearPressedOrFocusedBackground(); 1954 } 1955 1956 mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 1957 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect, child.getScaleX()); 1958 b.recycle(); 1959 1960 // Show the scrolling indicator when you pick up an item 1961 showScrollingIndicator(false); 1962 } 1963 1964 void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, int screen, 1965 int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { 1966 View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); 1967 1968 final int[] cellXY = new int[2]; 1969 target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1970 addInScreen(view, container, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1971 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, cellXY[0], 1972 cellXY[1]); 1973 } 1974 1975 public boolean transitionStateShouldAllowDrop() { 1976 return ((!isSwitchingState() || mTransitionProgress > 0.5f) && mState != State.SMALL); 1977 } 1978 1979 /** 1980 * {@inheritDoc} 1981 */ 1982 public boolean acceptDrop(DragObject d) { 1983 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1984 if (d.dragSource != this) { 1985 // Don't accept the drop if we're not over a screen at time of drop 1986 if (mDragTargetLayout == null) { 1987 return false; 1988 } 1989 if (!transitionStateShouldAllowDrop()) return false; 1990 1991 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 1992 d.dragView, mDragViewVisualCenter); 1993 1994 // We want the point to be mapped to the dragTarget. 1995 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 1996 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 1997 } else { 1998 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 1999 } 2000 2001 int spanX = 1; 2002 int spanY = 1; 2003 View ignoreView = null; 2004 if (mDragInfo != null) { 2005 final CellLayout.CellInfo dragCellInfo = mDragInfo; 2006 spanX = dragCellInfo.spanX; 2007 spanY = dragCellInfo.spanY; 2008 ignoreView = dragCellInfo.cell; 2009 } else { 2010 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 2011 spanX = dragInfo.spanX; 2012 spanY = dragInfo.spanY; 2013 } 2014 2015 int minSpanX = spanX; 2016 int minSpanY = spanY; 2017 if (d.dragInfo instanceof PendingAddWidgetInfo) { 2018 minSpanX = ((PendingAddWidgetInfo) d.dragInfo).minSpanX; 2019 minSpanY = ((PendingAddWidgetInfo) d.dragInfo).minSpanY; 2020 } 2021 2022 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2023 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, mDragTargetLayout, 2024 mTargetCell); 2025 float distance = mDragTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2026 mDragViewVisualCenter[1], mTargetCell); 2027 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, 2028 mTargetCell, distance, true)) { 2029 return true; 2030 } 2031 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, 2032 mTargetCell, distance)) { 2033 return true; 2034 } 2035 2036 int[] resultSpan = new int[2]; 2037 mTargetCell = mDragTargetLayout.createArea((int) mDragViewVisualCenter[0], 2038 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2039 null, mTargetCell, resultSpan, CellLayout.MODE_ACCEPT_DROP); 2040 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2041 2042 // Don't accept the drop if there's no room for the item 2043 if (!foundCell) { 2044 // Don't show the message if we are dropping on the AllApps button and the hotseat 2045 // is full 2046 if (mTargetCell != null && mLauncher.isHotseatLayout(mDragTargetLayout)) { 2047 Hotseat hotseat = mLauncher.getHotseat(); 2048 if (hotseat.isAllAppsButtonRank( 2049 hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { 2050 return false; 2051 } 2052 } 2053 2054 mLauncher.showOutOfSpaceMessage(); 2055 return false; 2056 } 2057 } 2058 return true; 2059 } 2060 2061 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, float 2062 distance, boolean considerTimeout) { 2063 if (distance > mMaxDistanceForFolderCreation) return false; 2064 2065 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2066 2067 boolean hasntMoved = false; 2068 if (mDragInfo != null) { 2069 hasntMoved = dropOverView == mDragInfo.cell; 2070 } 2071 2072 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2073 return false; 2074 } 2075 2076 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2077 boolean willBecomeShortcut = 2078 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2079 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2080 2081 return (aboveShortcut && willBecomeShortcut); 2082 } 2083 2084 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell, 2085 float distance) { 2086 if (distance > mMaxDistanceForFolderCreation) return false; 2087 2088 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2089 if (dropOverView instanceof FolderIcon) { 2090 FolderIcon fi = (FolderIcon) dropOverView; 2091 if (fi.acceptDrop(dragInfo)) { 2092 return true; 2093 } 2094 } 2095 return false; 2096 } 2097 2098 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2099 int[] targetCell, float distance, boolean external, DragView dragView, 2100 Runnable postAnimationRunnable) { 2101 if (distance > mMaxDistanceForFolderCreation) return false; 2102 View v = target.getChildAt(targetCell[0], targetCell[1]); 2103 boolean hasntMoved = false; 2104 if (mDragInfo != null) { 2105 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2106 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2107 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2108 } 2109 2110 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2111 mCreateUserFolderOnDrop = false; 2112 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 2113 2114 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2115 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2116 2117 if (aboveShortcut && willBecomeShortcut) { 2118 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2119 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2120 // if the drag started here, we need to remove it from the workspace 2121 if (!external) { 2122 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2123 } 2124 2125 Rect folderLocation = new Rect(); 2126 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2127 target.removeView(v); 2128 2129 FolderIcon fi = 2130 mLauncher.addFolder(target, container, screen, targetCell[0], targetCell[1]); 2131 destInfo.cellX = -1; 2132 destInfo.cellY = -1; 2133 sourceInfo.cellX = -1; 2134 sourceInfo.cellY = -1; 2135 2136 // If the dragView is null, we can't animate 2137 boolean animate = dragView != null; 2138 if (animate) { 2139 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2140 postAnimationRunnable); 2141 } else { 2142 fi.addItem(destInfo); 2143 fi.addItem(sourceInfo); 2144 } 2145 return true; 2146 } 2147 return false; 2148 } 2149 2150 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2151 float distance, DragObject d, boolean external) { 2152 if (distance > mMaxDistanceForFolderCreation) return false; 2153 2154 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2155 if (dropOverView instanceof FolderIcon) { 2156 FolderIcon fi = (FolderIcon) dropOverView; 2157 if (fi.acceptDrop(d.dragInfo)) { 2158 fi.onDrop(d); 2159 2160 // if the drag started here, we need to remove it from the workspace 2161 if (!external) { 2162 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2163 } 2164 return true; 2165 } 2166 } 2167 return false; 2168 } 2169 2170 public void onDrop(final DragObject d) { 2171 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2172 mDragViewVisualCenter); 2173 2174 // We want the point to be mapped to the dragTarget. 2175 if (mDragTargetLayout != null) { 2176 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2177 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2178 } else { 2179 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2180 } 2181 } 2182 2183 CellLayout dropTargetLayout = mDragTargetLayout; 2184 2185 int snapScreen = -1; 2186 boolean resizeOnDrop = false; 2187 if (d.dragSource != this) { 2188 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2189 (int) mDragViewVisualCenter[1] }; 2190 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2191 } else if (mDragInfo != null) { 2192 final View cell = mDragInfo.cell; 2193 2194 Runnable resizeRunnable = null; 2195 if (dropTargetLayout != null) { 2196 // Move internally 2197 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2198 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2199 long container = hasMovedIntoHotseat ? 2200 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2201 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2202 int screen = (mTargetCell[0] < 0) ? 2203 mDragInfo.screen : indexOfChild(dropTargetLayout); 2204 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2205 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2206 // First we find the cell nearest to point at which the item is 2207 // dropped, without any consideration to whether there is an item there. 2208 2209 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2210 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2211 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2212 mDragViewVisualCenter[1], mTargetCell); 2213 2214 // If the item being dropped is a shortcut and the nearest drop 2215 // cell also contains a shortcut, then create a folder with the two shortcuts. 2216 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2217 dropTargetLayout, mTargetCell, distance, false, d.dragView, null)) { 2218 return; 2219 } 2220 2221 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, 2222 distance, d, false)) { 2223 return; 2224 } 2225 2226 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2227 // we need to find the nearest cell location that is vacant 2228 ItemInfo item = (ItemInfo) d.dragInfo; 2229 int minSpanX = item.spanX; 2230 int minSpanY = item.spanY; 2231 if (item.minSpanX > 0 && item.minSpanY > 0) { 2232 minSpanX = item.minSpanX; 2233 minSpanY = item.minSpanY; 2234 } 2235 2236 int[] resultSpan = new int[2]; 2237 mTargetCell = mDragTargetLayout.createArea((int) mDragViewVisualCenter[0], 2238 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, cell, 2239 mTargetCell, resultSpan, CellLayout.MODE_ON_DROP); 2240 2241 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2242 if (foundCell && (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY)) { 2243 resizeOnDrop = true; 2244 item.spanX = resultSpan[0]; 2245 item.spanY = resultSpan[1]; 2246 } 2247 2248 if (mCurrentPage != screen && !hasMovedIntoHotseat) { 2249 snapScreen = screen; 2250 snapToPage(screen); 2251 } 2252 2253 if (foundCell) { 2254 final ItemInfo info = (ItemInfo) cell.getTag(); 2255 if (hasMovedLayouts) { 2256 // Reparent the view 2257 getParentCellLayoutForView(cell).removeView(cell); 2258 addInScreen(cell, container, screen, mTargetCell[0], mTargetCell[1], 2259 info.spanX, info.spanY); 2260 } 2261 2262 // update the item's position after drop 2263 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2264 lp.cellX = mTargetCell[0]; 2265 lp.cellY = mTargetCell[1]; 2266 lp.cellHSpan = item.spanX; 2267 lp.cellVSpan = item.spanY; 2268 cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screen, 2269 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2270 2271 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2272 cell instanceof LauncherAppWidgetHostView) { 2273 final CellLayout cellLayout = dropTargetLayout; 2274 // We post this call so that the widget has a chance to be placed 2275 // in its final location 2276 2277 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2278 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2279 if (pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2280 final Runnable addResizeFrame = new Runnable() { 2281 public void run() { 2282 DragLayer dragLayer = mLauncher.getDragLayer(); 2283 dragLayer.addResizeFrame(info, hostView, cellLayout); 2284 } 2285 }; 2286 resizeRunnable = (new Runnable() { 2287 public void run() { 2288 if (!isPageMoving()) { 2289 addResizeFrame.run(); 2290 } else { 2291 mDelayedResizeRunnable = addResizeFrame; 2292 } 2293 } 2294 }); 2295 } 2296 } 2297 2298 LauncherModel.moveItemInDatabase(mLauncher, info, container, screen, lp.cellX, 2299 lp.cellY); 2300 } else { 2301 // If we can't find a drop location, we return the item to its original position 2302 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2303 mTargetCell[0] = lp.cellX; 2304 mTargetCell[1] = lp.cellY; 2305 } 2306 } 2307 2308 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2309 final Runnable finalResizeRunnable = resizeRunnable; 2310 // Prepare it to be animated into its new position 2311 // This must be called after the view has been re-parented 2312 final Runnable onCompleteRunnable = new Runnable() { 2313 @Override 2314 public void run() { 2315 mAnimatingViewIntoPlace = false; 2316 updateChildrenLayersEnabled(); 2317 if (finalResizeRunnable != null) { 2318 finalResizeRunnable.run(); 2319 } 2320 } 2321 }; 2322 mAnimatingViewIntoPlace = true; 2323 if (d.dragView.hasDrawn()) { 2324 final ItemInfo info = (ItemInfo) cell.getTag(); 2325 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET) { 2326 int animationType = resizeOnDrop ? ANIMATE_INTO_POSITION_AND_RESIZE : 2327 ANIMATE_INTO_POSITION_AND_DISAPPEAR; 2328 animateWidgetDrop(info, parent, d.dragView, 2329 onCompleteRunnable, animationType, cell, false); 2330 } else { 2331 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2332 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2333 onCompleteRunnable, this); 2334 } 2335 } else { 2336 d.deferDragViewCleanupPostAnimation = false; 2337 cell.setVisibility(VISIBLE); 2338 } 2339 parent.onDropChild(cell); 2340 } 2341 } 2342 2343 public void onFlingToDelete(DragObject d, int x, int y, PointF vec) { 2344 // Do nothing 2345 } 2346 2347 public void setFinalScrollForPageChange(int screen) { 2348 if (screen >= 0) { 2349 mSavedScrollX = getScrollX(); 2350 CellLayout cl = (CellLayout) getChildAt(screen); 2351 mSavedTranslationX = cl.getTranslationX(); 2352 mSavedRotationY = cl.getRotationY(); 2353 final int newX = getChildOffset(screen) - getRelativeChildOffset(screen); 2354 setScrollX(newX); 2355 cl.setTranslationX(0f); 2356 cl.setRotationY(0f); 2357 } 2358 } 2359 2360 public void resetFinalScrollForPageChange(int screen) { 2361 if (screen >= 0) { 2362 CellLayout cl = (CellLayout) getChildAt(screen); 2363 setScrollX(mSavedScrollX); 2364 cl.setTranslationX(mSavedTranslationX); 2365 cl.setRotationY(mSavedRotationY); 2366 } 2367 } 2368 2369 public void getViewLocationRelativeToSelf(View v, int[] location) { 2370 getLocationInWindow(location); 2371 int x = location[0]; 2372 int y = location[1]; 2373 2374 v.getLocationInWindow(location); 2375 int vX = location[0]; 2376 int vY = location[1]; 2377 2378 location[0] = vX - x; 2379 location[1] = vY - y; 2380 } 2381 2382 public void onDragEnter(DragObject d) { 2383 mDragHasEnteredWorkspace = true; 2384 if (mDragTargetLayout != null) { 2385 mDragTargetLayout.setIsDragOverlapping(false); 2386 mDragTargetLayout.onDragExit(); 2387 } 2388 mDragTargetLayout = getCurrentDropLayout(); 2389 mDragTargetLayout.setIsDragOverlapping(true); 2390 mDragTargetLayout.onDragEnter(); 2391 2392 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2393 // don't need to show the outlines 2394 if (LauncherApplication.isScreenLarge()) { 2395 showOutlines(); 2396 } 2397 } 2398 2399 private void doDragExit(DragObject d) { 2400 // Clean up folders 2401 cleanupFolderCreation(d); 2402 2403 // Clean up reorder 2404 if (mReorderAlarm != null) { 2405 mReorderAlarm.cancelAlarm(); 2406 mLastReorderX = -1; 2407 mLastReorderY = -1; 2408 } 2409 2410 // Reset the scroll area and previous drag target 2411 onResetScrollArea(); 2412 2413 if (mDragTargetLayout != null) { 2414 mDragTargetLayout.setIsDragOverlapping(false); 2415 mDragTargetLayout.onDragExit(); 2416 } 2417 mLastDragOverView = null; 2418 mDragMode = DRAG_MODE_NONE; 2419 mSpringLoadedDragController.cancel(); 2420 2421 if (!mIsPageMoving) { 2422 hideOutlines(); 2423 } 2424 } 2425 2426 public void onDragExit(DragObject d) { 2427 mDragHasEnteredWorkspace = false; 2428 doDragExit(d); 2429 } 2430 2431 public DropTarget getDropTargetDelegate(DragObject d) { 2432 return null; 2433 } 2434 2435 /** 2436 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 2437 * in the returned structure related to the widgets that match the drop (or a null list if it is 2438 * a shortcut drop). If the drop is not accepted then a null structure is returned. 2439 */ 2440 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 2441 final LauncherModel model = mLauncher.getModel(); 2442 final ClipDescription desc = event.getClipDescription(); 2443 final int mimeTypeCount = desc.getMimeTypeCount(); 2444 for (int i = 0; i < mimeTypeCount; ++i) { 2445 final String mimeType = desc.getMimeType(i); 2446 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 2447 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 2448 } else { 2449 final List<WidgetMimeTypeHandlerData> widgets = 2450 model.resolveWidgetsForMimeType(mContext, mimeType); 2451 if (widgets.size() > 0) { 2452 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 2453 } 2454 } 2455 } 2456 return null; 2457 } 2458 2459 /* 2460 * 2461 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2462 * coordinate space. The argument xy is modified with the return result. 2463 * 2464 */ 2465 void mapPointFromSelfToChild(View v, float[] xy) { 2466 mapPointFromSelfToChild(v, xy, null); 2467 } 2468 2469 /* 2470 * 2471 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2472 * coordinate space. The argument xy is modified with the return result. 2473 * 2474 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2475 * computing it itself; we use this to avoid redundant matrix inversions in 2476 * findMatchingPageForDragOver 2477 * 2478 */ 2479 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2480 if (cachedInverseMatrix == null) { 2481 v.getMatrix().invert(mTempInverseMatrix); 2482 cachedInverseMatrix = mTempInverseMatrix; 2483 } 2484 int scrollX = mScrollX; 2485 if (mNextPage != INVALID_PAGE) { 2486 scrollX = mScroller.getFinalX(); 2487 } 2488 xy[0] = xy[0] + scrollX - v.getLeft(); 2489 xy[1] = xy[1] + mScrollY - v.getTop(); 2490 cachedInverseMatrix.mapPoints(xy); 2491 } 2492 2493 /* 2494 * Maps a point from the Workspace's coordinate system to another sibling view's. (Workspace 2495 * covers the full screen) 2496 */ 2497 void mapPointFromSelfToSibling(View v, float[] xy) { 2498 xy[0] = xy[0] - v.getLeft(); 2499 xy[1] = xy[1] - v.getTop(); 2500 } 2501 2502 /* 2503 * 2504 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2505 * the parent View's coordinate space. The argument xy is modified with the return result. 2506 * 2507 */ 2508 void mapPointFromChildToSelf(View v, float[] xy) { 2509 v.getMatrix().mapPoints(xy); 2510 int scrollX = mScrollX; 2511 if (mNextPage != INVALID_PAGE) { 2512 scrollX = mScroller.getFinalX(); 2513 } 2514 xy[0] -= (scrollX - v.getLeft()); 2515 xy[1] -= (mScrollY - v.getTop()); 2516 } 2517 2518 static private float squaredDistance(float[] point1, float[] point2) { 2519 float distanceX = point1[0] - point2[0]; 2520 float distanceY = point2[1] - point2[1]; 2521 return distanceX * distanceX + distanceY * distanceY; 2522 } 2523 2524 /* 2525 * 2526 * Returns true if the passed CellLayout cl overlaps with dragView 2527 * 2528 */ 2529 boolean overlaps(CellLayout cl, DragView dragView, 2530 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2531 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2532 final float[] draggedItemTopLeft = mTempDragCoordinates; 2533 draggedItemTopLeft[0] = dragViewX; 2534 draggedItemTopLeft[1] = dragViewY; 2535 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2536 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2537 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2538 2539 // Transform the dragged item's top left coordinates 2540 // to the CellLayout's local coordinates 2541 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2542 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2543 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2544 2545 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2546 // Transform the dragged item's bottom right coordinates 2547 // to the CellLayout's local coordinates 2548 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2549 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2550 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2551 2552 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2553 float overlap = (overlapRegionRight - overlapRegionLeft) * 2554 (overlapRegionBottom - overlapRegionTop); 2555 if (overlap > 0) { 2556 return true; 2557 } 2558 } 2559 } 2560 return false; 2561 } 2562 2563 /* 2564 * 2565 * This method returns the CellLayout that is currently being dragged to. In order to drag 2566 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2567 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2568 * 2569 * Return null if no CellLayout is currently being dragged over 2570 * 2571 */ 2572 private CellLayout findMatchingPageForDragOver( 2573 DragView dragView, float originX, float originY, boolean exact) { 2574 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2575 // with the item being dragged and then choose the one that's closest to the touch point 2576 final int screenCount = getChildCount(); 2577 CellLayout bestMatchingScreen = null; 2578 float smallestDistSoFar = Float.MAX_VALUE; 2579 2580 for (int i = 0; i < screenCount; i++) { 2581 CellLayout cl = (CellLayout) getChildAt(i); 2582 2583 final float[] touchXy = {originX, originY}; 2584 // Transform the touch coordinates to the CellLayout's local coordinates 2585 // If the touch point is within the bounds of the cell layout, we can return immediately 2586 cl.getMatrix().invert(mTempInverseMatrix); 2587 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2588 2589 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2590 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2591 return cl; 2592 } 2593 2594 if (!exact) { 2595 // Get the center of the cell layout in screen coordinates 2596 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2597 cellLayoutCenter[0] = cl.getWidth()/2; 2598 cellLayoutCenter[1] = cl.getHeight()/2; 2599 mapPointFromChildToSelf(cl, cellLayoutCenter); 2600 2601 touchXy[0] = originX; 2602 touchXy[1] = originY; 2603 2604 // Calculate the distance between the center of the CellLayout 2605 // and the touch point 2606 float dist = squaredDistance(touchXy, cellLayoutCenter); 2607 2608 if (dist < smallestDistSoFar) { 2609 smallestDistSoFar = dist; 2610 bestMatchingScreen = cl; 2611 } 2612 } 2613 } 2614 return bestMatchingScreen; 2615 } 2616 2617 // This is used to compute the visual center of the dragView. This point is then 2618 // used to visualize drop locations and determine where to drop an item. The idea is that 2619 // the visual center represents the user's interpretation of where the item is, and hence 2620 // is the appropriate point to use when determining drop location. 2621 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2622 DragView dragView, float[] recycle) { 2623 float res[]; 2624 if (recycle == null) { 2625 res = new float[2]; 2626 } else { 2627 res = recycle; 2628 } 2629 2630 // First off, the drag view has been shifted in a way that is not represented in the 2631 // x and y values or the x/yOffsets. Here we account for that shift. 2632 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2633 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2634 2635 // These represent the visual top and left of drag view if a dragRect was provided. 2636 // If a dragRect was not provided, then they correspond to the actual view left and 2637 // top, as the dragRect is in that case taken to be the entire dragView. 2638 // R.dimen.dragViewOffsetY. 2639 int left = x - xOffset; 2640 int top = y - yOffset; 2641 2642 // In order to find the visual center, we shift by half the dragRect 2643 res[0] = left + dragView.getDragRegion().width() / 2; 2644 res[1] = top + dragView.getDragRegion().height() / 2; 2645 2646 return res; 2647 } 2648 2649 private boolean isDragWidget(DragObject d) { 2650 return (d.dragInfo instanceof LauncherAppWidgetInfo || 2651 d.dragInfo instanceof PendingAddWidgetInfo); 2652 } 2653 private boolean isExternalDragWidget(DragObject d) { 2654 return d.dragSource != this && isDragWidget(d); 2655 } 2656 2657 public void onDragOver(DragObject d) { 2658 // Skip drag over events while we are dragging over side pages 2659 if (mInScrollArea || mIsSwitchingState || mState == State.SMALL) return; 2660 2661 Rect r = new Rect(); 2662 CellLayout layout = null; 2663 ItemInfo item = (ItemInfo) d.dragInfo; 2664 2665 // Ensure that we have proper spans for the item that we are dropping 2666 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2667 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2668 d.dragView, mDragViewVisualCenter); 2669 2670 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2671 // Identify whether we have dragged over a side page 2672 if (isSmall()) { 2673 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 2674 mLauncher.getHotseat().getHitRect(r); 2675 if (r.contains(d.x, d.y)) { 2676 layout = mLauncher.getHotseat().getLayout(); 2677 } 2678 } 2679 if (layout == null) { 2680 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false); 2681 } 2682 if (layout != mDragTargetLayout) { 2683 // Cancel all intermediate folder states 2684 cleanupFolderCreation(d); 2685 2686 if (mDragTargetLayout != null) { 2687 mDragTargetLayout.setIsDragOverlapping(false); 2688 mDragTargetLayout.onDragExit(); 2689 } 2690 mDragTargetLayout = layout; 2691 if (mDragTargetLayout != null) { 2692 mDragTargetLayout.setIsDragOverlapping(true); 2693 mDragTargetLayout.onDragEnter(); 2694 } else { 2695 mLastDragOverView = null; 2696 mDragMode = DRAG_MODE_NONE; 2697 } 2698 2699 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 2700 if (isInSpringLoadedMode) { 2701 if (mLauncher.isHotseatLayout(layout)) { 2702 mSpringLoadedDragController.cancel(); 2703 } else { 2704 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2705 } 2706 } 2707 } 2708 } else { 2709 // Test to see if we are over the hotseat otherwise just use the current page 2710 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 2711 mLauncher.getHotseat().getHitRect(r); 2712 if (r.contains(d.x, d.y)) { 2713 layout = mLauncher.getHotseat().getLayout(); 2714 } 2715 } 2716 if (layout == null) { 2717 layout = getCurrentDropLayout(); 2718 } 2719 if (layout != mDragTargetLayout) { 2720 if (mDragTargetLayout != null) { 2721 mDragTargetLayout.setIsDragOverlapping(false); 2722 mDragTargetLayout.onDragExit(); 2723 } 2724 mDragTargetLayout = layout; 2725 mDragTargetLayout.setIsDragOverlapping(true); 2726 mDragTargetLayout.onDragEnter(); 2727 } 2728 } 2729 2730 // Handle the drag over 2731 if (mDragTargetLayout != null) { 2732 // We want the point to be mapped to the dragTarget. 2733 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2734 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2735 } else { 2736 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2737 } 2738 ItemInfo info = (ItemInfo) d.dragInfo; 2739 2740 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2741 (int) mDragViewVisualCenter[1], 1, 1, mDragTargetLayout, mTargetCell); 2742 float targetCellDistance = mDragTargetLayout.getDistanceFromCell( 2743 mDragViewVisualCenter[0], mDragViewVisualCenter[1], mTargetCell); 2744 2745 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2746 mTargetCell[1]); 2747 2748 final View lastDragOverView = mLastDragOverView; 2749 if (mLastDragOverView != dragOverView) { 2750 mDragMode = DRAG_MODE_NONE; 2751 mLastDragOverView = dragOverView; 2752 if (mReorderAlarm != null) { 2753 mReorderAlarm.cancelAlarm(); 2754 } 2755 } 2756 2757 boolean folder = willCreateOrAddToFolder(info, mDragTargetLayout, mTargetCell, 2758 targetCellDistance, dragOverView, lastDragOverView); 2759 2760 int minSpanX = item.spanX; 2761 int minSpanY = item.spanY; 2762 if (item.minSpanX > 0 && item.minSpanY > 0) { 2763 minSpanX = item.minSpanX; 2764 minSpanY = item.minSpanY; 2765 } 2766 2767 if (!folder && !mReorderAlarm.alarmPending() && (mLastReorderX != mTargetCell[0] || 2768 mLastReorderY != mTargetCell[1])) { 2769 cancelFolderCreation(); 2770 ReorderAlarmListener listener = new ReorderAlarmListener(mDragViewVisualCenter, 2771 minSpanX, minSpanY, item.spanX, item.spanY, d.dragView, child); 2772 mReorderAlarm.setOnAlarmListener(listener); 2773 mReorderAlarm.setAlarm(REORDER_TIMEOUT); 2774 } else if (folder) { 2775 if (mReorderAlarm != null) { 2776 mReorderAlarm.cancelAlarm(); 2777 } 2778 } 2779 // TODO: need to determine what we're going to about visualizing drop locations 2780 /* 2781 boolean resize = resultSpan[0] != info.spanX || resultSpan[1] != info.spanY; 2782 if (!folder) { 2783 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2784 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2785 mTargetCell[0], mTargetCell[1], resultSpan[0], resultSpan[1], resize, 2786 d.dragView.getDragVisualizeOffset(), d.dragView.getDragRegion()); 2787 2788 } 2789 */ 2790 } 2791 } 2792 2793 private boolean willCreateOrAddToFolder(ItemInfo info, CellLayout targetLayout, 2794 int[] targetCell, float distance, View dragOverView, View lastDragOverView) { 2795 boolean userFolderPending = willCreateUserFolder(info, targetLayout, targetCell, distance, 2796 false); 2797 2798 if (userFolderPending && mDragMode == DRAG_MODE_NONE) { 2799 mFolderCreationAlarm.setOnAlarmListener(new 2800 FolderCreationAlarmListener(targetLayout, targetCell[0], targetCell[1])); 2801 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2802 } 2803 2804 boolean willAddToFolder = 2805 willAddToExistingUserFolder(info, targetLayout, targetCell, distance); 2806 2807 if (willAddToFolder && mDragMode == DRAG_MODE_NONE) { 2808 FolderIcon fi = ((FolderIcon) dragOverView); 2809 mDragMode = DRAG_MODE_ADD_TO_FOLDER; 2810 fi.onDragEnter(info); 2811 if (targetLayout != null) { 2812 targetLayout.clearDragOutlines(); 2813 } 2814 } 2815 2816 if (dragOverView != lastDragOverView || (mCreateUserFolderOnDrop && !userFolderPending) 2817 || (!willAddToFolder && mDragMode == DRAG_MODE_ADD_TO_FOLDER)) { 2818 cancelFolderCreation(); 2819 if (lastDragOverView != null && lastDragOverView instanceof FolderIcon) { 2820 ((FolderIcon) lastDragOverView).onDragExit(info); 2821 } 2822 } 2823 2824 return willAddToFolder || userFolderPending; 2825 } 2826 2827 private void cleanupFolderCreation(DragObject d) { 2828 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2829 mDragFolderRingAnimator.animateToNaturalState(); 2830 } 2831 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2832 if (d != null) { 2833 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2834 } 2835 } 2836 mFolderCreationAlarm.cancelAlarm(); 2837 } 2838 2839 private void cancelFolderCreation() { 2840 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2841 mDragFolderRingAnimator.animateToNaturalState(); 2842 } 2843 mCreateUserFolderOnDrop = false; 2844 mFolderCreationAlarm.cancelAlarm(); 2845 } 2846 2847 class FolderCreationAlarmListener implements OnAlarmListener { 2848 CellLayout layout; 2849 int cellX; 2850 int cellY; 2851 2852 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 2853 this.layout = layout; 2854 this.cellX = cellX; 2855 this.cellY = cellY; 2856 } 2857 2858 public void onAlarm(Alarm alarm) { 2859 if (mDragFolderRingAnimator == null) { 2860 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 2861 } 2862 mDragFolderRingAnimator.setCell(cellX, cellY); 2863 mDragFolderRingAnimator.setCellLayout(layout); 2864 mDragFolderRingAnimator.animateToAcceptState(); 2865 layout.showFolderAccept(mDragFolderRingAnimator); 2866 layout.clearDragOutlines(); 2867 mCreateUserFolderOnDrop = true; 2868 mDragMode = 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 = mDragTargetLayout.createArea((int) mDragViewVisualCenter[0], 2892 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2893 child, mTargetCell, resultSpan, CellLayout.MODE_DRAG_OVER); 2894 2895 mLastReorderX = mTargetCell[0]; 2896 mLastReorderY = mTargetCell[1]; 2897 2898 if (mDragMode == DRAG_MODE_ADD_TO_FOLDER) { 2899 } 2900 mDragMode = DRAG_MODE_REORDER; 2901 2902 // TODO: need to determine what we're going to about visualizing drop locations 2903 /* 2904 boolean resize = resultSpan[0] != spanX || resultSpan[1] != spanY; 2905 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2906 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2907 mTargetCell[0], mTargetCell[1], resultSpan[0], resultSpan[1], resize, 2908 dragView.getDragVisualizeOffset(), dragView.getDragRegion()); 2909 */ 2910 } 2911 } 2912 2913 @Override 2914 public void getHitRect(Rect outRect) { 2915 // We want the workspace to have the whole area of the display (it will find the correct 2916 // cell layout to drop to in the existing drag/drop logic. 2917 outRect.set(0, 0, mDisplayWidth, mDisplayHeight); 2918 } 2919 2920 /** 2921 * Add the item specified by dragInfo to the given layout. 2922 * @return true if successful 2923 */ 2924 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2925 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2926 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2927 return true; 2928 } 2929 mLauncher.showOutOfSpaceMessage(); 2930 return false; 2931 } 2932 2933 private void onDropExternal(int[] touchXY, Object dragInfo, 2934 CellLayout cellLayout, boolean insertAtFirst) { 2935 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 2936 } 2937 2938 /** 2939 * Drop an item that didn't originate on one of the workspace screens. 2940 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2941 * come from another app altogether. 2942 * 2943 * NOTE: This can also be called when we are outside of a drag event, when we want 2944 * to add an item to one of the workspace screens. 2945 */ 2946 private void onDropExternal(final int[] touchXY, final Object dragInfo, 2947 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 2948 final Runnable exitSpringLoadedRunnable = new Runnable() { 2949 @Override 2950 public void run() { 2951 mLauncher.exitSpringLoadedDragModeDelayed(true, false, null); 2952 } 2953 }; 2954 2955 ItemInfo info = (ItemInfo) dragInfo; 2956 int spanX = info.spanX; 2957 int spanY = info.spanY; 2958 if (mDragInfo != null) { 2959 spanX = mDragInfo.spanX; 2960 spanY = mDragInfo.spanY; 2961 } 2962 2963 final long container = mLauncher.isHotseatLayout(cellLayout) ? 2964 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2965 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2966 final int screen = indexOfChild(cellLayout); 2967 if (!mLauncher.isHotseatLayout(cellLayout) && screen != mCurrentPage 2968 && mState != State.SPRING_LOADED) { 2969 snapToPage(screen); 2970 } 2971 2972 if (info instanceof PendingAddItemInfo) { 2973 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 2974 2975 boolean findNearestVacantCell = true; 2976 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 2977 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 2978 cellLayout, mTargetCell); 2979 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2980 mDragViewVisualCenter[1], mTargetCell); 2981 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, 2982 distance, true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 2983 mDragTargetLayout, mTargetCell, distance)) { 2984 findNearestVacantCell = false; 2985 } 2986 } 2987 2988 final ItemInfo item = (ItemInfo) d.dragInfo; 2989 if (findNearestVacantCell) { 2990 int minSpanX = item.spanX; 2991 int minSpanY = item.spanY; 2992 if (item.minSpanX > 0 && item.minSpanY > 0) { 2993 minSpanX = item.minSpanX; 2994 minSpanY = item.minSpanY; 2995 } 2996 int[] resultSpan = new int[2]; 2997 mTargetCell = mDragTargetLayout.createArea((int) mDragViewVisualCenter[0], 2998 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, info.spanX, info.spanY, 2999 null, mTargetCell, resultSpan, CellLayout.MODE_ON_DROP_EXTERNAL); 3000 item.spanX = resultSpan[0]; 3001 item.spanY = resultSpan[1]; 3002 } 3003 3004 Runnable onAnimationCompleteRunnable = new Runnable() { 3005 @Override 3006 public void run() { 3007 // When dragging and dropping from customization tray, we deal with creating 3008 // widgets/shortcuts/folders in a slightly different way 3009 switch (pendingInfo.itemType) { 3010 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 3011 int span[] = new int[2]; 3012 span[0] = item.spanX; 3013 span[1] = item.spanY; 3014 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, 3015 container, screen, mTargetCell, span, null); 3016 break; 3017 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3018 mLauncher.processShortcutFromDrop(pendingInfo.componentName, 3019 container, screen, mTargetCell, null); 3020 break; 3021 default: 3022 throw new IllegalStateException("Unknown item type: " + 3023 pendingInfo.itemType); 3024 } 3025 cellLayout.onDragExit(); 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 = mDragTargetLayout.createArea((int) mDragViewVisualCenter[0], 3080 (int) mDragViewVisualCenter[1], 1, 1, 1, 1, 3081 null, mTargetCell, null, CellLayout.MODE_ON_DROP); 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(mNextPage == INVALID_PAGE ? mCurrentPage : mNextPage); 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 success) { 3283 if (success) { 3284 if (target != this) { 3285 if (mDragInfo != null) { 3286 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 3287 if (mDragInfo.cell instanceof DropTarget) { 3288 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 3289 } 3290 } 3291 } 3292 } else if (mDragInfo != null) { 3293 // NOTE: When 'success' is true, onDragExit is called by the DragController before 3294 // calling onDropCompleted(). We call it ourselves here, but maybe this should be 3295 // moved into DragController.cancelDrag(). 3296 doDragExit(null); 3297 CellLayout cellLayout; 3298 if (mLauncher.isHotseatLayout(target)) { 3299 cellLayout = mLauncher.getHotseat().getLayout(); 3300 } else { 3301 cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3302 } 3303 cellLayout.onDropChild(mDragInfo.cell); 3304 } 3305 if (d.cancelled && mDragInfo.cell != null) { 3306 mDragInfo.cell.setVisibility(VISIBLE); 3307 } 3308 mDragOutline = null; 3309 mDragInfo = null; 3310 3311 saveWorkspaceStateToDb(); 3312 // Hide the scrolling indicator after you pick up an item 3313 hideScrollingIndicator(false); 3314 } 3315 3316 public void saveWorkspaceStateToDb() { 3317 int count = getChildCount(); 3318 for (int i = 0; i < count; i++) { 3319 CellLayout cl = (CellLayout) getChildAt(i); 3320 if (cl.isItemPlacementDirty()) { 3321 updateItemLocationsInDatabase(cl); 3322 cl.setItemPlacementDirty(false); 3323 } 3324 } 3325 } 3326 3327 private void updateItemLocationsInDatabase(CellLayout cl) { 3328 int count = cl.getShortcutsAndWidgets().getChildCount(); 3329 int screen = indexOfChild(cl); 3330 for (int i = 0; i < count; i++) { 3331 View v = cl.getShortcutsAndWidgets().getChildAt(i); 3332 ItemInfo info = (ItemInfo) v.getTag(); 3333 3334 LauncherModel.moveItemInDatabase(mLauncher, info, Favorites.CONTAINER_DESKTOP, screen, 3335 info.cellX, info.cellY); 3336 } 3337 } 3338 3339 public boolean supportsFlingToDelete() { 3340 return true; 3341 } 3342 3343 public boolean isDropEnabled() { 3344 return true; 3345 } 3346 3347 @Override 3348 protected void onRestoreInstanceState(Parcelable state) { 3349 super.onRestoreInstanceState(state); 3350 Launcher.setScreen(mCurrentPage); 3351 } 3352 3353 @Override 3354 public void scrollLeft() { 3355 if (!isSmall() && !mIsSwitchingState) { 3356 super.scrollLeft(); 3357 } 3358 Folder openFolder = getOpenFolder(); 3359 if (openFolder != null) { 3360 openFolder.completeDragExit(); 3361 } 3362 } 3363 3364 @Override 3365 public void scrollRight() { 3366 if (!isSmall() && !mIsSwitchingState) { 3367 super.scrollRight(); 3368 } 3369 Folder openFolder = getOpenFolder(); 3370 if (openFolder != null) { 3371 openFolder.completeDragExit(); 3372 } 3373 } 3374 3375 @Override 3376 public boolean onEnterScrollArea(int x, int y, int direction) { 3377 // Ignore the scroll area if we are dragging over the hot seat 3378 if (mLauncher.getHotseat() != null) { 3379 Rect r = new Rect(); 3380 mLauncher.getHotseat().getHitRect(r); 3381 if (r.contains(x, y)) { 3382 return false; 3383 } 3384 } 3385 3386 boolean result = false; 3387 if (!isSmall() && !mIsSwitchingState) { 3388 mInScrollArea = true; 3389 3390 final int page = (mNextPage != INVALID_PAGE ? mNextPage : mCurrentPage) + 3391 (direction == DragController.SCROLL_LEFT ? -1 : 1); 3392 cancelFolderCreation(); 3393 3394 if (0 <= page && page < getChildCount()) { 3395 CellLayout layout = (CellLayout) getChildAt(page); 3396 // Exit the current layout and mark the overlapping layout 3397 if (mDragTargetLayout != null) { 3398 mDragTargetLayout.setIsDragOverlapping(false); 3399 mDragTargetLayout.onDragExit(); 3400 } 3401 mDragTargetLayout = layout; 3402 mDragTargetLayout.setIsDragOverlapping(true); 3403 3404 // Workspace is responsible for drawing the edge glow on adjacent pages, 3405 // so we need to redraw the workspace when this may have changed. 3406 invalidate(); 3407 result = true; 3408 } 3409 } 3410 return result; 3411 } 3412 3413 @Override 3414 public boolean onExitScrollArea() { 3415 boolean result = false; 3416 if (mInScrollArea) { 3417 if (mDragTargetLayout != null) { 3418 mDragTargetLayout.setIsDragOverlapping(false); 3419 // Workspace is responsible for drawing the edge glow on adjacent pages, 3420 // so we need to redraw the workspace when this may have changed. 3421 invalidate(); 3422 } 3423 if (mDragTargetLayout != null && mDragHasEnteredWorkspace) { 3424 // Unmark the overlapping layout and re-enter the current layout 3425 mDragTargetLayout = getCurrentDropLayout(); 3426 mDragTargetLayout.onDragEnter(); 3427 } 3428 result = true; 3429 mInScrollArea = false; 3430 } 3431 return result; 3432 } 3433 3434 private void onResetScrollArea() { 3435 if (mDragTargetLayout != null) { 3436 // Unmark the overlapping layout 3437 mDragTargetLayout.setIsDragOverlapping(false); 3438 3439 // Workspace is responsible for drawing the edge glow on adjacent pages, 3440 // so we need to redraw the workspace when this may have changed. 3441 invalidate(); 3442 } 3443 mInScrollArea = false; 3444 } 3445 3446 /** 3447 * Returns a specific CellLayout 3448 */ 3449 CellLayout getParentCellLayoutForView(View v) { 3450 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3451 for (CellLayout layout : layouts) { 3452 if (layout.getShortcutsAndWidgets().indexOfChild(v) > -1) { 3453 return layout; 3454 } 3455 } 3456 return null; 3457 } 3458 3459 /** 3460 * Returns a list of all the CellLayouts in the workspace. 3461 */ 3462 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3463 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3464 int screenCount = getChildCount(); 3465 for (int screen = 0; screen < screenCount; screen++) { 3466 layouts.add(((CellLayout) getChildAt(screen))); 3467 } 3468 if (mLauncher.getHotseat() != null) { 3469 layouts.add(mLauncher.getHotseat().getLayout()); 3470 } 3471 return layouts; 3472 } 3473 3474 /** 3475 * We should only use this to search for specific children. Do not use this method to modify 3476 * ShortcutsAndWidgetsContainer directly. Includes ShortcutAndWidgetContainers from 3477 * the hotseat and workspace pages 3478 */ 3479 ArrayList<ShortcutAndWidgetContainer> getAllShortcutAndWidgetContainers() { 3480 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3481 new ArrayList<ShortcutAndWidgetContainer>(); 3482 int screenCount = getChildCount(); 3483 for (int screen = 0; screen < screenCount; screen++) { 3484 childrenLayouts.add(((CellLayout) getChildAt(screen)).getShortcutsAndWidgets()); 3485 } 3486 if (mLauncher.getHotseat() != null) { 3487 childrenLayouts.add(mLauncher.getHotseat().getLayout().getShortcutsAndWidgets()); 3488 } 3489 return childrenLayouts; 3490 } 3491 3492 public Folder getFolderForTag(Object tag) { 3493 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3494 getAllShortcutAndWidgetContainers(); 3495 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3496 int count = layout.getChildCount(); 3497 for (int i = 0; i < count; i++) { 3498 View child = layout.getChildAt(i); 3499 if (child instanceof Folder) { 3500 Folder f = (Folder) child; 3501 if (f.getInfo() == tag && f.getInfo().opened) { 3502 return f; 3503 } 3504 } 3505 } 3506 } 3507 return null; 3508 } 3509 3510 public View getViewForTag(Object tag) { 3511 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3512 getAllShortcutAndWidgetContainers(); 3513 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3514 int count = layout.getChildCount(); 3515 for (int i = 0; i < count; i++) { 3516 View child = layout.getChildAt(i); 3517 if (child.getTag() == tag) { 3518 return child; 3519 } 3520 } 3521 } 3522 return null; 3523 } 3524 3525 void clearDropTargets() { 3526 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3527 getAllShortcutAndWidgetContainers(); 3528 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3529 int childCount = layout.getChildCount(); 3530 for (int j = 0; j < childCount; j++) { 3531 View v = layout.getChildAt(j); 3532 if (v instanceof DropTarget) { 3533 mDragController.removeDropTarget((DropTarget) v); 3534 } 3535 } 3536 } 3537 } 3538 3539 void removeItems(final ArrayList<ApplicationInfo> apps) { 3540 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3541 3542 final HashSet<String> packageNames = new HashSet<String>(); 3543 final int appCount = apps.size(); 3544 for (int i = 0; i < appCount; i++) { 3545 packageNames.add(apps.get(i).componentName.getPackageName()); 3546 } 3547 3548 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3549 for (final CellLayout layoutParent: cellLayouts) { 3550 final ViewGroup layout = layoutParent.getShortcutsAndWidgets(); 3551 3552 // Avoid ANRs by treating each screen separately 3553 post(new Runnable() { 3554 public void run() { 3555 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3556 childrenToRemove.clear(); 3557 3558 int childCount = layout.getChildCount(); 3559 for (int j = 0; j < childCount; j++) { 3560 final View view = layout.getChildAt(j); 3561 Object tag = view.getTag(); 3562 3563 if (tag instanceof ShortcutInfo) { 3564 final ShortcutInfo info = (ShortcutInfo) tag; 3565 final Intent intent = info.intent; 3566 final ComponentName name = intent.getComponent(); 3567 3568 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3569 for (String packageName: packageNames) { 3570 if (packageName.equals(name.getPackageName())) { 3571 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3572 childrenToRemove.add(view); 3573 } 3574 } 3575 } 3576 } else if (tag instanceof FolderInfo) { 3577 final FolderInfo info = (FolderInfo) tag; 3578 final ArrayList<ShortcutInfo> contents = info.contents; 3579 final int contentsCount = contents.size(); 3580 final ArrayList<ShortcutInfo> appsToRemoveFromFolder = 3581 new ArrayList<ShortcutInfo>(); 3582 3583 for (int k = 0; k < contentsCount; k++) { 3584 final ShortcutInfo appInfo = contents.get(k); 3585 final Intent intent = appInfo.intent; 3586 final ComponentName name = intent.getComponent(); 3587 3588 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3589 for (String packageName: packageNames) { 3590 if (packageName.equals(name.getPackageName())) { 3591 appsToRemoveFromFolder.add(appInfo); 3592 } 3593 } 3594 } 3595 } 3596 for (ShortcutInfo item: appsToRemoveFromFolder) { 3597 info.remove(item); 3598 LauncherModel.deleteItemFromDatabase(mLauncher, item); 3599 } 3600 } else if (tag instanceof LauncherAppWidgetInfo) { 3601 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3602 final AppWidgetProviderInfo provider = 3603 widgets.getAppWidgetInfo(info.appWidgetId); 3604 if (provider != null) { 3605 for (String packageName: packageNames) { 3606 if (packageName.equals(provider.provider.getPackageName())) { 3607 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3608 childrenToRemove.add(view); 3609 } 3610 } 3611 } 3612 } 3613 } 3614 3615 childCount = childrenToRemove.size(); 3616 for (int j = 0; j < childCount; j++) { 3617 View child = childrenToRemove.get(j); 3618 // Note: We can not remove the view directly from CellLayoutChildren as this 3619 // does not re-mark the spaces as unoccupied. 3620 layoutParent.removeViewInLayout(child); 3621 if (child instanceof DropTarget) { 3622 mDragController.removeDropTarget((DropTarget)child); 3623 } 3624 } 3625 3626 if (childCount > 0) { 3627 layout.requestLayout(); 3628 layout.invalidate(); 3629 } 3630 } 3631 }); 3632 } 3633 } 3634 3635 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3636 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = getAllShortcutAndWidgetContainers(); 3637 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3638 int childCount = layout.getChildCount(); 3639 for (int j = 0; j < childCount; j++) { 3640 final View view = layout.getChildAt(j); 3641 Object tag = view.getTag(); 3642 if (tag instanceof ShortcutInfo) { 3643 ShortcutInfo info = (ShortcutInfo) tag; 3644 // We need to check for ACTION_MAIN otherwise getComponent() might 3645 // return null for some shortcuts (for instance, for shortcuts to 3646 // web pages.) 3647 final Intent intent = info.intent; 3648 final ComponentName name = intent.getComponent(); 3649 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3650 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3651 final int appCount = apps.size(); 3652 for (int k = 0; k < appCount; k++) { 3653 ApplicationInfo app = apps.get(k); 3654 if (app.componentName.equals(name)) { 3655 BubbleTextView shortcut = (BubbleTextView) view; 3656 info.updateIcon(mIconCache); 3657 info.title = app.title.toString(); 3658 shortcut.applyFromShortcutInfo(info, mIconCache); 3659 } 3660 } 3661 } 3662 } 3663 } 3664 } 3665 } 3666 3667 void moveToDefaultScreen(boolean animate) { 3668 if (!isSmall()) { 3669 if (animate) { 3670 snapToPage(mDefaultPage); 3671 } else { 3672 setCurrentPage(mDefaultPage); 3673 } 3674 } 3675 getChildAt(mDefaultPage).requestFocus(); 3676 } 3677 3678 @Override 3679 public void syncPages() { 3680 } 3681 3682 @Override 3683 public void syncPageItems(int page, boolean immediate) { 3684 } 3685 3686 @Override 3687 protected String getCurrentPageDescription() { 3688 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 3689 return String.format(mContext.getString(R.string.workspace_scroll_format), 3690 page + 1, getChildCount()); 3691 } 3692 3693 public void getLocationInDragLayer(int[] loc) { 3694 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 3695 } 3696 3697 void setFadeForOverScroll(float fade) { 3698 if (!isScrollingIndicatorEnabled()) return; 3699 3700 mOverscrollFade = fade; 3701 float reducedFade = 0.5f + 0.5f * (1 - fade); 3702 final ViewGroup parent = (ViewGroup) getParent(); 3703 final ImageView qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3704 final ImageView dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3705 final View scrollIndicator = getScrollingIndicator(); 3706 3707 cancelScrollingIndicatorAnimations(); 3708 if (qsbDivider != null) qsbDivider.setAlpha(reducedFade); 3709 if (dockDivider != null) dockDivider.setAlpha(reducedFade); 3710 scrollIndicator.setAlpha(1 - fade); 3711 } 3712} 3713