Workspace.java revision 873ad10401bede22aa72339996e70710a4807c32
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.launcher2; 18 19import android.animation.Animator; 20import android.animation.AnimatorSet; 21import android.animation.ObjectAnimator; 22import android.animation.TimeInterpolator; 23import android.animation.ValueAnimator; 24import android.animation.ValueAnimator.AnimatorUpdateListener; 25import android.app.WallpaperManager; 26import android.appwidget.AppWidgetHostView; 27import android.appwidget.AppWidgetManager; 28import android.appwidget.AppWidgetProviderInfo; 29import android.content.ComponentName; 30import android.content.Context; 31import android.content.Intent; 32import android.content.res.Resources; 33import android.content.res.TypedArray; 34import android.graphics.Bitmap; 35import android.graphics.Camera; 36import android.graphics.Canvas; 37import android.graphics.Matrix; 38import android.graphics.Paint; 39import android.graphics.Point; 40import android.graphics.PointF; 41import android.graphics.PorterDuff; 42import android.graphics.PorterDuffColorFilter; 43import android.graphics.Rect; 44import android.graphics.Region.Op; 45import android.graphics.drawable.Drawable; 46import android.os.IBinder; 47import android.os.Parcelable; 48import android.util.AttributeSet; 49import android.util.DisplayMetrics; 50import android.util.Log; 51import android.view.Display; 52import android.view.MotionEvent; 53import android.view.View; 54import android.view.ViewGroup; 55import android.view.animation.DecelerateInterpolator; 56import android.widget.ImageView; 57import android.widget.TextView; 58 59import com.android.launcher.R; 60import com.android.launcher2.FolderIcon.FolderRingAnimator; 61import com.android.launcher2.LauncherSettings.Favorites; 62 63import java.util.ArrayList; 64import java.util.HashSet; 65 66/** 67 * The workspace is a wide area with a wallpaper and a finite number of pages. 68 * Each page contains a number of icons, folders or widgets the user can 69 * interact with. A workspace is meant to be used with a fixed width only. 70 */ 71public class Workspace extends SmoothPagedView 72 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 73 DragController.DragListener, LauncherTransitionable, ViewGroup.OnHierarchyChangeListener { 74 private static final String TAG = "Launcher.Workspace"; 75 76 // Y rotation to apply to the workspace screens 77 private static final float WORKSPACE_ROTATION = 12.5f; 78 private static final float WORKSPACE_OVERSCROLL_ROTATION = 24f; 79 private static float CAMERA_DISTANCE = 6500; 80 81 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 82 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 83 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 84 85 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 86 private static final int ADJACENT_SCREEN_DROP_DURATION = 300; 87 private static final int FLING_THRESHOLD_VELOCITY = 500; 88 89 private float mMaxDistanceForFolderCreation; 90 91 // These animators are used to fade the children's outlines 92 private ObjectAnimator mChildrenOutlineFadeInAnimation; 93 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 94 private float mChildrenOutlineAlpha = 0; 95 96 // These properties refer to the background protection gradient used for AllApps and Customize 97 private ValueAnimator mBackgroundFadeInAnimation; 98 private ValueAnimator mBackgroundFadeOutAnimation; 99 private Drawable mBackground; 100 boolean mDrawBackground = true; 101 private float mBackgroundAlpha = 0; 102 private float mOverScrollMaxBackgroundAlpha = 0.0f; 103 private int mOverScrollPageIndex = -1; 104 105 private float mWallpaperScrollRatio = 1.0f; 106 107 private final WallpaperManager mWallpaperManager; 108 private IBinder mWindowToken; 109 private static final float WALLPAPER_SCREENS_SPAN = 2f; 110 111 private int mDefaultPage; 112 113 /** 114 * CellInfo for the cell that is currently being dragged 115 */ 116 private CellLayout.CellInfo mDragInfo; 117 118 /** 119 * Target drop area calculated during last acceptDrop call. 120 */ 121 private int[] mTargetCell = new int[2]; 122 private int mDragOverX = -1; 123 private int mDragOverY = -1; 124 125 /** 126 * The CellLayout that is currently being dragged over 127 */ 128 private CellLayout mDragTargetLayout = null; 129 /** 130 * The CellLayout that we will show as glowing 131 */ 132 private CellLayout mDragOverlappingLayout = null; 133 134 /** 135 * The CellLayout which will be dropped to 136 */ 137 private CellLayout mDropToLayout = null; 138 139 private Launcher mLauncher; 140 private IconCache mIconCache; 141 private DragController mDragController; 142 143 // These are temporary variables to prevent having to allocate a new object just to 144 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 145 private int[] mTempCell = new int[2]; 146 private int[] mTempEstimate = new int[2]; 147 private float[] mDragViewVisualCenter = new float[2]; 148 private float[] mTempDragCoordinates = new float[2]; 149 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 150 private float[] mTempDragBottomRightCoordinates = new float[2]; 151 private Matrix mTempInverseMatrix = new Matrix(); 152 153 private SpringLoadedDragController mSpringLoadedDragController; 154 private float mSpringLoadedShrinkFactor; 155 156 private static final int DEFAULT_CELL_COUNT_X = 4; 157 private static final int DEFAULT_CELL_COUNT_Y = 4; 158 159 // State variable that indicates whether the pages are small (ie when you're 160 // in all apps or customize mode) 161 162 enum State { NORMAL, SPRING_LOADED, SMALL }; 163 private State mState = State.NORMAL; 164 private boolean mIsSwitchingState = false; 165 166 boolean mAnimatingViewIntoPlace = false; 167 boolean mIsDragOccuring = false; 168 boolean mChildrenLayersEnabled = true; 169 170 /** Is the user is dragging an item near the edge of a page? */ 171 private boolean mInScrollArea = false; 172 173 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 174 private Bitmap mDragOutline = null; 175 private final Rect mTempRect = new Rect(); 176 private final int[] mTempXY = new int[2]; 177 private float mOverscrollFade = 0; 178 private boolean mOverscrollTransformsSet; 179 public static final int DRAG_BITMAP_PADDING = 2; 180 181 // Camera and Matrix used to determine the final position of a neighboring CellLayout 182 private final Matrix mMatrix = new Matrix(); 183 private final Camera mCamera = new Camera(); 184 private final float mTempFloat2[] = new float[2]; 185 186 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 187 int mWallpaperWidth; 188 int mWallpaperHeight; 189 WallpaperOffsetInterpolator mWallpaperOffset; 190 boolean mUpdateWallpaperOffsetImmediately = false; 191 private Runnable mDelayedResizeRunnable; 192 private Runnable mDelayedSnapToPageRunnable; 193 private Point mDisplaySize = new Point(); 194 private boolean mIsStaticWallpaper; 195 private int mWallpaperTravelWidth; 196 197 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 198 private static final int FOLDER_CREATION_TIMEOUT = 0; 199 private static final int REORDER_TIMEOUT = 250; 200 private final Alarm mFolderCreationAlarm = new Alarm(); 201 private final Alarm mReorderAlarm = new Alarm(); 202 private FolderRingAnimator mDragFolderRingAnimator = null; 203 private FolderIcon mDragOverFolderIcon = null; 204 private boolean mCreateUserFolderOnDrop = false; 205 private boolean mAddToExistingFolderOnDrop = false; 206 private DropTarget.DragEnforcer mDragEnforcer; 207 208 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 209 private float mXDown; 210 private float mYDown; 211 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 212 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 213 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 214 215 // Relating to the animation of items being dropped externally 216 public static final int ANIMATE_INTO_POSITION_AND_DISAPPEAR = 0; 217 public static final int ANIMATE_INTO_POSITION_AND_REMAIN = 1; 218 public static final int ANIMATE_INTO_POSITION_AND_RESIZE = 2; 219 public static final int COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION = 3; 220 public static final int CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION = 4; 221 222 // Related to dragging, folder creation and reordering 223 private static final int DRAG_MODE_NONE = 0; 224 private static final int DRAG_MODE_CREATE_FOLDER = 1; 225 private static final int DRAG_MODE_ADD_TO_FOLDER = 2; 226 private static final int DRAG_MODE_REORDER = 3; 227 private int mDragMode = DRAG_MODE_NONE; 228 private int mLastReorderX = -1; 229 private int mLastReorderY = -1; 230 231 // These variables are used for storing the initial and final values during workspace animations 232 private int mSavedScrollX; 233 private float mSavedRotationY; 234 private float mSavedTranslationX; 235 private float mCurrentScaleX; 236 private float mCurrentScaleY; 237 private float mCurrentRotationY; 238 private float mCurrentTranslationX; 239 private float mCurrentTranslationY; 240 private float[] mOldTranslationXs; 241 private float[] mOldTranslationYs; 242 private float[] mOldScaleXs; 243 private float[] mOldScaleYs; 244 private float[] mOldBackgroundAlphas; 245 private float[] mOldBackgroundAlphaMultipliers; 246 private float[] mOldAlphas; 247 private float[] mOldRotationYs; 248 private float[] mNewTranslationXs; 249 private float[] mNewTranslationYs; 250 private float[] mNewScaleXs; 251 private float[] mNewScaleYs; 252 private float[] mNewBackgroundAlphas; 253 private float[] mNewBackgroundAlphaMultipliers; 254 private float[] mNewAlphas; 255 private float[] mNewRotationYs; 256 private float mTransitionProgress; 257 258 /** 259 * Used to inflate the Workspace from XML. 260 * 261 * @param context The application's context. 262 * @param attrs The attributes set containing the Workspace's customization values. 263 */ 264 public Workspace(Context context, AttributeSet attrs) { 265 this(context, attrs, 0); 266 } 267 268 /** 269 * Used to inflate the Workspace from XML. 270 * 271 * @param context The application's context. 272 * @param attrs The attributes set containing the Workspace's customization values. 273 * @param defStyle Unused. 274 */ 275 public Workspace(Context context, AttributeSet attrs, int defStyle) { 276 super(context, attrs, defStyle); 277 mContentIsRefreshable = false; 278 279 mDragEnforcer = new DropTarget.DragEnforcer(context); 280 // With workspace, data is available straight from the get-go 281 setDataIsReady(); 282 283 final Resources res = getResources(); 284 mFadeInAdjacentScreens = res.getBoolean(R.bool.config_workspaceFadeAdjacentScreens); 285 mWallpaperManager = WallpaperManager.getInstance(context); 286 287 int cellCountX = DEFAULT_CELL_COUNT_X; 288 int cellCountY = DEFAULT_CELL_COUNT_Y; 289 290 TypedArray a = context.obtainStyledAttributes(attrs, 291 R.styleable.Workspace, defStyle, 0); 292 293 if (LauncherApplication.isScreenLarge()) { 294 // Determine number of rows/columns dynamically 295 // TODO: This code currently fails on tablets with an aspect ratio < 1.3. 296 // Around that ratio we should make cells the same size in portrait and 297 // landscape 298 TypedArray actionBarSizeTypedArray = 299 context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize }); 300 DisplayMetrics displayMetrics = res.getDisplayMetrics(); 301 final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); 302 final float systemBarHeight = res.getDimension(R.dimen.status_bar_height); 303 final float smallestScreenDim = res.getConfiguration().smallestScreenWidthDp * 304 displayMetrics.density; 305 306 cellCountX = 1; 307 while (CellLayout.widthInPortrait(res, cellCountX + 1) <= smallestScreenDim) { 308 cellCountX++; 309 } 310 311 cellCountY = 1; 312 while (actionBarHeight + CellLayout.heightInLandscape(res, cellCountY + 1) 313 <= smallestScreenDim - systemBarHeight) { 314 cellCountY++; 315 } 316 } 317 318 mSpringLoadedShrinkFactor = 319 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 320 321 // if the value is manually specified, use that instead 322 cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX); 323 cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY); 324 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 325 a.recycle(); 326 327 setOnHierarchyChangeListener(this); 328 329 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 330 setHapticFeedbackEnabled(false); 331 332 mLauncher = (Launcher) context; 333 initWorkspace(); 334 335 // Disable multitouch across the workspace/all apps/customize tray 336 setMotionEventSplittingEnabled(true); 337 } 338 339 // estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each 340 // dimension if unsuccessful 341 public int[] estimateItemSize(int hSpan, int vSpan, 342 ItemInfo itemInfo, boolean springLoaded) { 343 int[] size = new int[2]; 344 if (getChildCount() > 0) { 345 CellLayout cl = (CellLayout) mLauncher.getWorkspace().getChildAt(0); 346 Rect r = estimateItemPosition(cl, itemInfo, 0, 0, hSpan, vSpan); 347 size[0] = r.width(); 348 size[1] = r.height(); 349 if (springLoaded) { 350 size[0] *= mSpringLoadedShrinkFactor; 351 size[1] *= mSpringLoadedShrinkFactor; 352 } 353 return size; 354 } else { 355 size[0] = Integer.MAX_VALUE; 356 size[1] = Integer.MAX_VALUE; 357 return size; 358 } 359 } 360 public Rect estimateItemPosition(CellLayout cl, ItemInfo pendingInfo, 361 int hCell, int vCell, int hSpan, int vSpan) { 362 Rect r = new Rect(); 363 cl.cellToRect(hCell, vCell, hSpan, vSpan, r); 364 return r; 365 } 366 367 public void buildPageHardwareLayers() { 368 if (getWindowToken() != null) { 369 final int childCount = getChildCount(); 370 for (int i = 0; i < childCount; i++) { 371 CellLayout cl = (CellLayout) getChildAt(i); 372 cl.getShortcutsAndWidgets().buildLayer(); 373 } 374 } 375 } 376 377 public void onDragStart(DragSource source, Object info, int dragAction) { 378 mIsDragOccuring = true; 379 updateChildrenLayersEnabled(); 380 mLauncher.lockScreenOrientation(); 381 } 382 383 public void onDragEnd() { 384 mIsDragOccuring = false; 385 updateChildrenLayersEnabled(); 386 mLauncher.unlockScreenOrientation(); 387 } 388 389 /** 390 * Initializes various states for this workspace. 391 */ 392 protected void initWorkspace() { 393 Context context = getContext(); 394 mCurrentPage = mDefaultPage; 395 Launcher.setScreen(mCurrentPage); 396 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 397 mIconCache = app.getIconCache(); 398 setWillNotDraw(false); 399 setChildrenDrawnWithCacheEnabled(true); 400 401 final Resources res = getResources(); 402 try { 403 mBackground = res.getDrawable(R.drawable.apps_customize_bg); 404 } catch (Resources.NotFoundException e) { 405 // In this case, we will skip drawing background protection 406 } 407 408 mWallpaperOffset = new WallpaperOffsetInterpolator(); 409 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 410 display.getSize(mDisplaySize); 411 mWallpaperTravelWidth = (int) (mDisplaySize.x * 412 wallpaperTravelToScreenWidthRatio(mDisplaySize.x, mDisplaySize.y)); 413 414 mMaxDistanceForFolderCreation = (0.6f * res.getDimensionPixelSize(R.dimen.app_icon_size)); 415 mFlingThresholdVelocity = (int) (FLING_THRESHOLD_VELOCITY * mDensity); 416 } 417 418 @Override 419 protected int getScrollMode() { 420 return SmoothPagedView.X_LARGE_MODE; 421 } 422 423 @Override 424 public void onChildViewAdded(View parent, View child) { 425 if (!(child instanceof CellLayout)) { 426 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 427 } 428 CellLayout cl = ((CellLayout) child); 429 cl.setOnInterceptTouchListener(this); 430 cl.setClickable(true); 431 cl.enableHardwareLayers(); 432 } 433 434 @Override 435 public void onChildViewRemoved(View parent, View child) { 436 } 437 438 /** 439 * @return The open folder on the current screen, or null if there is none 440 */ 441 Folder getOpenFolder() { 442 DragLayer dragLayer = mLauncher.getDragLayer(); 443 int count = dragLayer.getChildCount(); 444 for (int i = 0; i < count; i++) { 445 View child = dragLayer.getChildAt(i); 446 if (child instanceof Folder) { 447 Folder folder = (Folder) child; 448 if (folder.getInfo().opened) 449 return folder; 450 } 451 } 452 return null; 453 } 454 455 boolean isTouchActive() { 456 return mTouchState != TOUCH_STATE_REST; 457 } 458 459 /** 460 * Adds the specified child in the specified screen. The position and dimension of 461 * the child are defined by x, y, spanX and spanY. 462 * 463 * @param child The child to add in one of the workspace's screens. 464 * @param screen The screen in which to add the child. 465 * @param x The X position of the child in the screen's grid. 466 * @param y The Y position of the child in the screen's grid. 467 * @param spanX The number of cells spanned horizontally by the child. 468 * @param spanY The number of cells spanned vertically by the child. 469 */ 470 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY) { 471 addInScreen(child, container, screen, x, y, spanX, spanY, false); 472 } 473 474 /** 475 * Adds the specified child in the specified screen. The position and dimension of 476 * the child are defined by x, y, spanX and spanY. 477 * 478 * @param child The child to add in one of the workspace's screens. 479 * @param screen The screen in which to add the child. 480 * @param x The X position of the child in the screen's grid. 481 * @param y The Y position of the child in the screen's grid. 482 * @param spanX The number of cells spanned horizontally by the child. 483 * @param spanY The number of cells spanned vertically by the child. 484 * @param insert When true, the child is inserted at the beginning of the children list. 485 */ 486 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY, 487 boolean insert) { 488 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 489 if (screen < 0 || screen >= getChildCount()) { 490 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 491 + " (was " + screen + "); skipping child"); 492 return; 493 } 494 } 495 496 final CellLayout layout; 497 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 498 layout = mLauncher.getHotseat().getLayout(); 499 child.setOnKeyListener(null); 500 501 // Hide folder title in the hotseat 502 if (child instanceof FolderIcon) { 503 ((FolderIcon) child).setTextVisible(false); 504 } 505 506 if (screen < 0) { 507 screen = mLauncher.getHotseat().getOrderInHotseat(x, y); 508 } else { 509 // Note: We do this to ensure that the hotseat is always laid out in the orientation 510 // of the hotseat in order regardless of which orientation they were added 511 x = mLauncher.getHotseat().getCellXFromOrder(screen); 512 y = mLauncher.getHotseat().getCellYFromOrder(screen); 513 } 514 } else { 515 // Show folder title if not in the hotseat 516 if (child instanceof FolderIcon) { 517 ((FolderIcon) child).setTextVisible(true); 518 } 519 520 layout = (CellLayout) getChildAt(screen); 521 child.setOnKeyListener(new IconKeyEventListener()); 522 } 523 524 LayoutParams genericLp = child.getLayoutParams(); 525 CellLayout.LayoutParams lp; 526 if (genericLp == null || !(genericLp instanceof CellLayout.LayoutParams)) { 527 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 528 } else { 529 lp = (CellLayout.LayoutParams) genericLp; 530 lp.cellX = x; 531 lp.cellY = y; 532 lp.cellHSpan = spanX; 533 lp.cellVSpan = spanY; 534 } 535 536 if (spanX < 0 && spanY < 0) { 537 lp.isLockedToGrid = false; 538 } 539 540 // Get the canonical child id to uniquely represent this view in this screen 541 int childId = LauncherModel.getCellLayoutChildId(container, screen, x, y, spanX, spanY); 542 boolean markCellsAsOccupied = !(child instanceof Folder); 543 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 544 // TODO: This branch occurs when the workspace is adding views 545 // outside of the defined grid 546 // maybe we should be deleting these items from the LauncherModel? 547 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 548 } 549 550 if (!(child instanceof Folder)) { 551 child.setHapticFeedbackEnabled(false); 552 child.setOnLongClickListener(mLongClickListener); 553 } 554 if (child instanceof DropTarget) { 555 mDragController.addDropTarget((DropTarget) child); 556 } 557 } 558 559 /** 560 * Check if the point (x, y) hits a given page. 561 */ 562 private boolean hitsPage(int index, float x, float y) { 563 final View page = getChildAt(index); 564 if (page != null) { 565 float[] localXY = { x, y }; 566 mapPointFromSelfToChild(page, localXY); 567 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 568 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 569 } 570 return false; 571 } 572 573 @Override 574 protected boolean hitsPreviousPage(float x, float y) { 575 // mNextPage is set to INVALID_PAGE whenever we are stationary. 576 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 577 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 578 579 // Only allow tap to next page on large devices, where there's significant margin outside 580 // the active workspace 581 return LauncherApplication.isScreenLarge() && hitsPage(current - 1, x, y); 582 } 583 584 @Override 585 protected boolean hitsNextPage(float x, float y) { 586 // mNextPage is set to INVALID_PAGE whenever we are stationary. 587 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 588 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 589 590 // Only allow tap to next page on large devices, where there's significant margin outside 591 // the active workspace 592 return LauncherApplication.isScreenLarge() && hitsPage(current + 1, x, y); 593 } 594 595 /** 596 * Called directly from a CellLayout (not by the framework), after we've been added as a 597 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 598 * that it should intercept touch events, which is not something that is normally supported. 599 */ 600 @Override 601 public boolean onTouch(View v, MotionEvent event) { 602 return (isSmall() || !isFinishedSwitchingState()); 603 } 604 605 public boolean isSwitchingState() { 606 return mIsSwitchingState; 607 } 608 609 /** This differs from isSwitchingState in that we take into account how far the transition 610 * has completed. */ 611 public boolean isFinishedSwitchingState() { 612 return !mIsSwitchingState || (mTransitionProgress > 0.5f); 613 } 614 615 protected void onWindowVisibilityChanged (int visibility) { 616 mLauncher.onWindowVisibilityChanged(visibility); 617 } 618 619 @Override 620 public boolean dispatchUnhandledMove(View focused, int direction) { 621 if (isSmall() || !isFinishedSwitchingState()) { 622 // when the home screens are shrunken, shouldn't allow side-scrolling 623 return false; 624 } 625 return super.dispatchUnhandledMove(focused, direction); 626 } 627 628 @Override 629 public boolean onInterceptTouchEvent(MotionEvent ev) { 630 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 631 case MotionEvent.ACTION_DOWN: 632 mXDown = ev.getX(); 633 mYDown = ev.getY(); 634 break; 635 case MotionEvent.ACTION_POINTER_UP: 636 case MotionEvent.ACTION_UP: 637 if (mTouchState == TOUCH_STATE_REST) { 638 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 639 if (!currentPage.lastDownOnOccupiedCell()) { 640 onWallpaperTap(ev); 641 } 642 } 643 } 644 return super.onInterceptTouchEvent(ev); 645 } 646 647 @Override 648 protected void determineScrollingStart(MotionEvent ev) { 649 if (isSmall()) return; 650 if (!isFinishedSwitchingState()) return; 651 652 float deltaX = Math.abs(ev.getX() - mXDown); 653 float deltaY = Math.abs(ev.getY() - mYDown); 654 655 if (Float.compare(deltaX, 0f) == 0) return; 656 657 float slope = deltaY / deltaX; 658 float theta = (float) Math.atan(slope); 659 660 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 661 cancelCurrentPageLongPress(); 662 } 663 664 if (theta > MAX_SWIPE_ANGLE) { 665 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 666 return; 667 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 668 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 669 // increase the touch slop to make it harder to begin scrolling the workspace. This 670 // results in vertically scrolling widgets to more easily. The higher the angle, the 671 // more we increase touch slop. 672 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 673 float extraRatio = (float) 674 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 675 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 676 } else { 677 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 678 super.determineScrollingStart(ev); 679 } 680 } 681 682 @Override 683 protected boolean isScrollingIndicatorEnabled() { 684 return super.isScrollingIndicatorEnabled() && (mState != State.SPRING_LOADED); 685 } 686 687 protected void onPageBeginMoving() { 688 super.onPageBeginMoving(); 689 690 if (isHardwareAccelerated()) { 691 updateChildrenLayersEnabled(); 692 } else { 693 if (mNextPage != INVALID_PAGE) { 694 // we're snapping to a particular screen 695 enableChildrenCache(mCurrentPage, mNextPage); 696 } else { 697 // this is when user is actively dragging a particular screen, they might 698 // swipe it either left or right (but we won't advance by more than one screen) 699 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 700 } 701 } 702 703 // Only show page outlines as we pan if we are on large screen 704 if (LauncherApplication.isScreenLarge()) { 705 showOutlines(); 706 mIsStaticWallpaper = mWallpaperManager.getWallpaperInfo() == null; 707 } 708 709 // If we are not fading in adjacent screens, we still need to restore the alpha in case the 710 // user scrolls while we are transitioning (should not affect dispatchDraw optimizations) 711 if (!mFadeInAdjacentScreens) { 712 for (int i = 0; i < getChildCount(); ++i) { 713 ((CellLayout) getPageAt(i)).setShortcutAndWidgetAlpha(1f); 714 } 715 } 716 717 // Show the scroll indicator as you pan the page 718 showScrollingIndicator(false); 719 } 720 721 protected void onPageEndMoving() { 722 super.onPageEndMoving(); 723 724 if (isHardwareAccelerated()) { 725 updateChildrenLayersEnabled(); 726 } else { 727 clearChildrenCache(); 728 } 729 730 731 if (mDragController.isDragging()) { 732 if (isSmall()) { 733 // If we are in springloaded mode, then force an event to check if the current touch 734 // is under a new page (to scroll to) 735 mDragController.forceMoveEvent(); 736 } 737 } else { 738 // If we are not mid-dragging, hide the page outlines if we are on a large screen 739 if (LauncherApplication.isScreenLarge()) { 740 hideOutlines(); 741 } 742 743 // Hide the scroll indicator as you pan the page 744 if (!mDragController.isDragging()) { 745 hideScrollingIndicator(false); 746 } 747 } 748 mOverScrollMaxBackgroundAlpha = 0.0f; 749 mOverScrollPageIndex = -1; 750 751 if (mDelayedResizeRunnable != null) { 752 mDelayedResizeRunnable.run(); 753 mDelayedResizeRunnable = null; 754 } 755 756 if (mDelayedSnapToPageRunnable != null) { 757 mDelayedSnapToPageRunnable.run(); 758 mDelayedSnapToPageRunnable = null; 759 } 760 } 761 762 @Override 763 protected void notifyPageSwitchListener() { 764 super.notifyPageSwitchListener(); 765 Launcher.setScreen(mCurrentPage); 766 }; 767 768 // As a ratio of screen height, the total distance we want the parallax effect to span 769 // horizontally 770 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 771 float aspectRatio = width / (float) height; 772 773 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 774 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 775 // We will use these two data points to extrapolate how much the wallpaper parallax effect 776 // to span (ie travel) at any aspect ratio: 777 778 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 779 final float ASPECT_RATIO_PORTRAIT = 10/16f; 780 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 781 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 782 783 // To find out the desired width at different aspect ratios, we use the following two 784 // formulas, where the coefficient on x is the aspect ratio (width/height): 785 // (16/10)x + y = 1.5 786 // (10/16)x + y = 1.2 787 // We solve for x and y and end up with a final formula: 788 final float x = 789 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 790 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 791 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 792 return x * aspectRatio + y; 793 } 794 795 // The range of scroll values for Workspace 796 private int getScrollRange() { 797 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 798 } 799 800 protected void setWallpaperDimension() { 801 DisplayMetrics displayMetrics = new DisplayMetrics(); 802 mLauncher.getWindowManager().getDefaultDisplay().getRealMetrics(displayMetrics); 803 final int maxDim = Math.max(displayMetrics.widthPixels, displayMetrics.heightPixels); 804 final int minDim = Math.min(displayMetrics.widthPixels, displayMetrics.heightPixels); 805 806 // We need to ensure that there is enough extra space in the wallpaper for the intended 807 // parallax effects 808 if (LauncherApplication.isScreenLarge()) { 809 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 810 mWallpaperHeight = maxDim; 811 } else { 812 mWallpaperWidth = Math.max((int) (minDim * WALLPAPER_SCREENS_SPAN), maxDim); 813 mWallpaperHeight = maxDim; 814 } 815 new Thread("setWallpaperDimension") { 816 public void run() { 817 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 818 } 819 }.start(); 820 } 821 822 private float wallpaperOffsetForCurrentScroll() { 823 // Set wallpaper offset steps (1 / (number of screens - 1)) 824 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f); 825 826 // For the purposes of computing the scrollRange and overScrollOffset, we assume 827 // that mLayoutScale is 1. This means that when we're in spring-loaded mode, 828 // there's no discrepancy between the wallpaper offset for a given page. 829 float layoutScale = mLayoutScale; 830 mLayoutScale = 1f; 831 int scrollRange = getScrollRange(); 832 833 // Again, we adjust the wallpaper offset to be consistent between values of mLayoutScale 834 float adjustedScrollX = Math.max(0, Math.min(getScrollX(), mMaxScrollX)); 835 adjustedScrollX *= mWallpaperScrollRatio; 836 mLayoutScale = layoutScale; 837 838 float scrollProgress = 839 adjustedScrollX / (float) scrollRange; 840 841 if (LauncherApplication.isScreenLarge() && mIsStaticWallpaper) { 842 // The wallpaper travel width is how far, from left to right, the wallpaper will move 843 // at this orientation. On tablets in portrait mode we don't move all the way to the 844 // edges of the wallpaper, or otherwise the parallax effect would be too strong. 845 int wallpaperTravelWidth = Math.min(mWallpaperTravelWidth, mWallpaperWidth); 846 847 float offsetInDips = wallpaperTravelWidth * scrollProgress + 848 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 849 float offset = offsetInDips / (float) mWallpaperWidth; 850 return offset; 851 } else { 852 return scrollProgress; 853 } 854 } 855 856 private void syncWallpaperOffsetWithScroll() { 857 final boolean enableWallpaperEffects = isHardwareAccelerated(); 858 if (enableWallpaperEffects) { 859 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 860 } 861 } 862 863 public void updateWallpaperOffsetImmediately() { 864 mUpdateWallpaperOffsetImmediately = true; 865 } 866 867 private void updateWallpaperOffsets() { 868 boolean updateNow = false; 869 boolean keepUpdating = true; 870 if (mUpdateWallpaperOffsetImmediately) { 871 updateNow = true; 872 keepUpdating = false; 873 mWallpaperOffset.jumpToFinal(); 874 mUpdateWallpaperOffsetImmediately = false; 875 } else { 876 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 877 } 878 if (updateNow) { 879 if (mWindowToken != null) { 880 mWallpaperManager.setWallpaperOffsets(mWindowToken, 881 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 882 } 883 } 884 if (keepUpdating) { 885 invalidate(); 886 } 887 } 888 889 @Override 890 protected void updateCurrentPageScroll() { 891 super.updateCurrentPageScroll(); 892 computeWallpaperScrollRatio(mCurrentPage); 893 } 894 895 @Override 896 protected void snapToPage(int whichPage) { 897 super.snapToPage(whichPage); 898 computeWallpaperScrollRatio(whichPage); 899 } 900 901 @Override 902 protected void snapToPage(int whichPage, int duration) { 903 super.snapToPage(whichPage, duration); 904 computeWallpaperScrollRatio(whichPage); 905 } 906 907 protected void snapToPage(int whichPage, Runnable r) { 908 if (mDelayedSnapToPageRunnable != null) { 909 mDelayedSnapToPageRunnable.run(); 910 } 911 mDelayedSnapToPageRunnable = r; 912 snapToPage(whichPage, SLOW_PAGE_SNAP_ANIMATION_DURATION); 913 } 914 915 private void computeWallpaperScrollRatio(int page) { 916 // Here, we determine what the desired scroll would be with and without a layout scale, 917 // and compute a ratio between the two. This allows us to adjust the wallpaper offset 918 // as though there is no layout scale. 919 float layoutScale = mLayoutScale; 920 int scaled = getChildOffset(page) - getRelativeChildOffset(page); 921 mLayoutScale = 1.0f; 922 float unscaled = getChildOffset(page) - getRelativeChildOffset(page); 923 mLayoutScale = layoutScale; 924 if (scaled > 0) { 925 mWallpaperScrollRatio = (1.0f * unscaled) / scaled; 926 } else { 927 mWallpaperScrollRatio = 1f; 928 } 929 } 930 931 class WallpaperOffsetInterpolator { 932 float mFinalHorizontalWallpaperOffset = 0.0f; 933 float mFinalVerticalWallpaperOffset = 0.5f; 934 float mHorizontalWallpaperOffset = 0.0f; 935 float mVerticalWallpaperOffset = 0.5f; 936 long mLastWallpaperOffsetUpdateTime; 937 boolean mIsMovingFast; 938 boolean mOverrideHorizontalCatchupConstant; 939 float mHorizontalCatchupConstant = 0.35f; 940 float mVerticalCatchupConstant = 0.35f; 941 942 public WallpaperOffsetInterpolator() { 943 } 944 945 public void setOverrideHorizontalCatchupConstant(boolean override) { 946 mOverrideHorizontalCatchupConstant = override; 947 } 948 949 public void setHorizontalCatchupConstant(float f) { 950 mHorizontalCatchupConstant = f; 951 } 952 953 public void setVerticalCatchupConstant(float f) { 954 mVerticalCatchupConstant = f; 955 } 956 957 public boolean computeScrollOffset() { 958 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 959 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 960 mIsMovingFast = false; 961 return false; 962 } 963 boolean isLandscape = mDisplaySize.x > mDisplaySize.y; 964 965 long currentTime = System.currentTimeMillis(); 966 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 967 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 968 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 969 970 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 971 if (!mIsMovingFast && xdiff > 0.07) { 972 mIsMovingFast = true; 973 } 974 975 float fractionToCatchUpIn1MsHorizontal; 976 if (mOverrideHorizontalCatchupConstant) { 977 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 978 } else if (mIsMovingFast) { 979 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 980 } else { 981 // slow 982 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 983 } 984 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 985 986 fractionToCatchUpIn1MsHorizontal /= 33f; 987 fractionToCatchUpIn1MsVertical /= 33f; 988 989 final float UPDATE_THRESHOLD = 0.00001f; 990 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 991 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 992 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 993 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 994 995 // Don't have any lag between workspace and wallpaper on non-large devices 996 if (!LauncherApplication.isScreenLarge() || jumpToFinalValue) { 997 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 998 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 999 } else { 1000 float percentToCatchUpVertical = 1001 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 1002 float percentToCatchUpHorizontal = 1003 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 1004 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 1005 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 1006 } 1007 1008 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 1009 return true; 1010 } 1011 1012 public float getCurrX() { 1013 return mHorizontalWallpaperOffset; 1014 } 1015 1016 public float getFinalX() { 1017 return mFinalHorizontalWallpaperOffset; 1018 } 1019 1020 public float getCurrY() { 1021 return mVerticalWallpaperOffset; 1022 } 1023 1024 public float getFinalY() { 1025 return mFinalVerticalWallpaperOffset; 1026 } 1027 1028 public void setFinalX(float x) { 1029 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 1030 } 1031 1032 public void setFinalY(float y) { 1033 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 1034 } 1035 1036 public void jumpToFinal() { 1037 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 1038 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 1039 } 1040 } 1041 1042 @Override 1043 public void computeScroll() { 1044 super.computeScroll(); 1045 syncWallpaperOffsetWithScroll(); 1046 } 1047 1048 void showOutlines() { 1049 if (!isSmall() && !mIsSwitchingState) { 1050 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1051 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1052 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 1053 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 1054 mChildrenOutlineFadeInAnimation.start(); 1055 } 1056 } 1057 1058 void hideOutlines() { 1059 if (!isSmall() && !mIsSwitchingState) { 1060 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1061 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1062 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 1063 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 1064 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 1065 mChildrenOutlineFadeOutAnimation.start(); 1066 } 1067 } 1068 1069 public void showOutlinesTemporarily() { 1070 if (!mIsPageMoving && !isTouchActive()) { 1071 snapToPage(mCurrentPage); 1072 } 1073 } 1074 1075 public void setChildrenOutlineAlpha(float alpha) { 1076 mChildrenOutlineAlpha = alpha; 1077 for (int i = 0; i < getChildCount(); i++) { 1078 CellLayout cl = (CellLayout) getChildAt(i); 1079 cl.setBackgroundAlpha(alpha); 1080 } 1081 } 1082 1083 public float getChildrenOutlineAlpha() { 1084 return mChildrenOutlineAlpha; 1085 } 1086 1087 void disableBackground() { 1088 mDrawBackground = false; 1089 } 1090 void enableBackground() { 1091 mDrawBackground = true; 1092 } 1093 1094 private void animateBackgroundGradient(float finalAlpha, boolean animated) { 1095 if (mBackground == null) return; 1096 if (mBackgroundFadeInAnimation != null) { 1097 mBackgroundFadeInAnimation.cancel(); 1098 mBackgroundFadeInAnimation = null; 1099 } 1100 if (mBackgroundFadeOutAnimation != null) { 1101 mBackgroundFadeOutAnimation.cancel(); 1102 mBackgroundFadeOutAnimation = null; 1103 } 1104 float startAlpha = getBackgroundAlpha(); 1105 if (finalAlpha != startAlpha) { 1106 if (animated) { 1107 mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(startAlpha, finalAlpha); 1108 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1109 public void onAnimationUpdate(ValueAnimator animation) { 1110 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1111 } 1112 }); 1113 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1114 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1115 mBackgroundFadeOutAnimation.start(); 1116 } else { 1117 setBackgroundAlpha(finalAlpha); 1118 } 1119 } 1120 } 1121 1122 public void setBackgroundAlpha(float alpha) { 1123 if (alpha != mBackgroundAlpha) { 1124 mBackgroundAlpha = alpha; 1125 invalidate(); 1126 } 1127 } 1128 1129 public float getBackgroundAlpha() { 1130 return mBackgroundAlpha; 1131 } 1132 1133 /** 1134 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 1135 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 1136 * as being larger. This method computes what offset the rotated view should be translated 1137 * in order to minimize this perceived gap. 1138 * @param degrees Angle of the view 1139 * @param width Width of the view 1140 * @param height Height of the view 1141 * @return Offset to be used in a View.setTranslationX() call 1142 */ 1143 private float getOffsetXForRotation(float degrees, int width, int height) { 1144 mMatrix.reset(); 1145 mCamera.save(); 1146 mCamera.rotateY(Math.abs(degrees)); 1147 mCamera.getMatrix(mMatrix); 1148 mCamera.restore(); 1149 1150 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 1151 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 1152 mTempFloat2[0] = width; 1153 mTempFloat2[1] = height; 1154 mMatrix.mapPoints(mTempFloat2); 1155 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 1156 } 1157 1158 float backgroundAlphaInterpolator(float r) { 1159 float pivotA = 0.1f; 1160 float pivotB = 0.4f; 1161 if (r < pivotA) { 1162 return 0; 1163 } else if (r > pivotB) { 1164 return 1.0f; 1165 } else { 1166 return (r - pivotA)/(pivotB - pivotA); 1167 } 1168 } 1169 1170 float overScrollBackgroundAlphaInterpolator(float r) { 1171 float threshold = 0.08f; 1172 1173 if (r > mOverScrollMaxBackgroundAlpha) { 1174 mOverScrollMaxBackgroundAlpha = r; 1175 } else if (r < mOverScrollMaxBackgroundAlpha) { 1176 r = mOverScrollMaxBackgroundAlpha; 1177 } 1178 1179 return Math.min(r / threshold, 1.0f); 1180 } 1181 1182 private void screenScrolledLargeUI(int screenCenter) { 1183 if (isSwitchingState()) return; 1184 boolean isInOverscroll = false; 1185 for (int i = 0; i < getChildCount(); i++) { 1186 CellLayout cl = (CellLayout) getChildAt(i); 1187 if (cl != null) { 1188 float scrollProgress = getScrollProgress(screenCenter, cl, i); 1189 float rotation = WORKSPACE_ROTATION * scrollProgress; 1190 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1191 1192 // If the current page (i) is being over scrolled, we use a different 1193 // set of rules for setting the background alpha multiplier. 1194 if (!isSmall()) { 1195 if ((mOverScrollX < 0 && i == 0) || (mOverScrollX > mMaxScrollX && 1196 i == getChildCount() -1)) { 1197 isInOverscroll = true; 1198 rotation *= -1; 1199 cl.setBackgroundAlphaMultiplier( 1200 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 1201 mOverScrollPageIndex = i; 1202 cl.setOverScrollAmount(Math.abs(scrollProgress), i == 0); 1203 if (!mOverscrollTransformsSet) { 1204 mOverscrollTransformsSet = true; 1205 cl.setPivotX(cl.getMeasuredWidth() * (i == 0 ? 0.75f : 0.25f)); 1206 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1207 cl.setOverscrollTransformsDirty(true); 1208 } 1209 } else if (mOverScrollPageIndex != i) { 1210 cl.setBackgroundAlphaMultiplier( 1211 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1212 } 1213 } 1214 cl.setTranslationX(translationX); 1215 cl.setRotationY(rotation); 1216 if (mFadeInAdjacentScreens && !isSmall()) { 1217 float alpha = 1 - Math.abs(scrollProgress); 1218 cl.setShortcutAndWidgetAlpha(alpha); 1219 } 1220 } 1221 } 1222 if (mOverscrollTransformsSet && !isInOverscroll) { 1223 mOverscrollTransformsSet = false; 1224 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1225 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1226 } 1227 invalidate(); 1228 } 1229 1230 private void screenScrolledStandardUI(int screenCenter) { 1231 if (mOverScrollX < 0 || mOverScrollX > mMaxScrollX) { 1232 int index = mOverScrollX < 0 ? 0 : getChildCount() - 1; 1233 CellLayout cl = (CellLayout) getChildAt(index); 1234 float scrollProgress = getScrollProgress(screenCenter, cl, index); 1235 cl.setOverScrollAmount(Math.abs(scrollProgress), index == 0); 1236 float rotation = - WORKSPACE_OVERSCROLL_ROTATION * scrollProgress; 1237 cl.setRotationY(rotation); 1238 setFadeForOverScroll(Math.abs(scrollProgress)); 1239 if (!mOverscrollTransformsSet) { 1240 mOverscrollTransformsSet = true; 1241 cl.setCameraDistance(mDensity * CAMERA_DISTANCE); 1242 cl.setPivotX(cl.getMeasuredWidth() * (index == 0 ? 0.75f : 0.25f)); 1243 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1244 cl.setOverscrollTransformsDirty(true); 1245 } 1246 } else { 1247 if (mOverscrollFade != 0) { 1248 setFadeForOverScroll(0); 1249 } 1250 if (mOverscrollTransformsSet) { 1251 mOverscrollTransformsSet = false; 1252 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1253 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1254 } 1255 } 1256 } 1257 1258 @Override 1259 protected void screenScrolled(int screenCenter) { 1260 if (LauncherApplication.isScreenLarge()) { 1261 // We don't call super.screenScrolled() here because we handle the adjacent pages alpha 1262 // ourselves (for efficiency), and there are no scrolling indicators to update. 1263 screenScrolledLargeUI(screenCenter); 1264 } else { 1265 super.screenScrolled(screenCenter); 1266 screenScrolledStandardUI(screenCenter); 1267 } 1268 } 1269 1270 @Override 1271 protected void overScroll(float amount) { 1272 if (LauncherApplication.isScreenLarge()) { 1273 dampedOverScroll(amount); 1274 } else { 1275 acceleratedOverScroll(amount); 1276 } 1277 } 1278 1279 protected void onAttachedToWindow() { 1280 super.onAttachedToWindow(); 1281 mWindowToken = getWindowToken(); 1282 computeScroll(); 1283 mDragController.setWindowToken(mWindowToken); 1284 } 1285 1286 protected void onDetachedFromWindow() { 1287 mWindowToken = null; 1288 } 1289 1290 @Override 1291 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1292 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1293 mUpdateWallpaperOffsetImmediately = true; 1294 } 1295 super.onLayout(changed, left, top, right, bottom); 1296 } 1297 1298 @Override 1299 protected void onDraw(Canvas canvas) { 1300 updateWallpaperOffsets(); 1301 1302 // Draw the background gradient if necessary 1303 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1304 int alpha = (int) (mBackgroundAlpha * 255); 1305 mBackground.setAlpha(alpha); 1306 mBackground.setBounds(getScrollX(), 0, getScrollX() + getMeasuredWidth(), 1307 getMeasuredHeight()); 1308 mBackground.draw(canvas); 1309 } 1310 1311 super.onDraw(canvas); 1312 } 1313 1314 boolean isDrawingBackgroundGradient() { 1315 return (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground); 1316 } 1317 1318 @Override 1319 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1320 if (!mLauncher.isAllAppsVisible()) { 1321 final Folder openFolder = getOpenFolder(); 1322 if (openFolder != null) { 1323 return openFolder.requestFocus(direction, previouslyFocusedRect); 1324 } else { 1325 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1326 } 1327 } 1328 return false; 1329 } 1330 1331 @Override 1332 public int getDescendantFocusability() { 1333 if (isSmall()) { 1334 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1335 } 1336 return super.getDescendantFocusability(); 1337 } 1338 1339 @Override 1340 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1341 if (!mLauncher.isAllAppsVisible()) { 1342 final Folder openFolder = getOpenFolder(); 1343 if (openFolder != null) { 1344 openFolder.addFocusables(views, direction); 1345 } else { 1346 super.addFocusables(views, direction, focusableMode); 1347 } 1348 } 1349 } 1350 1351 public boolean isSmall() { 1352 return mState == State.SMALL || mState == State.SPRING_LOADED; 1353 } 1354 1355 void enableChildrenCache(int fromPage, int toPage) { 1356 if (fromPage > toPage) { 1357 final int temp = fromPage; 1358 fromPage = toPage; 1359 toPage = temp; 1360 } 1361 1362 final int screenCount = getChildCount(); 1363 1364 fromPage = Math.max(fromPage, 0); 1365 toPage = Math.min(toPage, screenCount - 1); 1366 1367 for (int i = fromPage; i <= toPage; i++) { 1368 final CellLayout layout = (CellLayout) getChildAt(i); 1369 layout.setChildrenDrawnWithCacheEnabled(true); 1370 layout.setChildrenDrawingCacheEnabled(true); 1371 } 1372 } 1373 1374 void clearChildrenCache() { 1375 final int screenCount = getChildCount(); 1376 for (int i = 0; i < screenCount; i++) { 1377 final CellLayout layout = (CellLayout) getChildAt(i); 1378 layout.setChildrenDrawnWithCacheEnabled(false); 1379 // In software mode, we don't want the items to continue to be drawn into bitmaps 1380 if (!isHardwareAccelerated()) { 1381 layout.setChildrenDrawingCacheEnabled(false); 1382 } 1383 } 1384 } 1385 1386 private void updateChildrenLayersEnabled() { 1387 boolean small = mState == State.SMALL || mIsSwitchingState; 1388 boolean enableChildrenLayers = small || mAnimatingViewIntoPlace || isPageMoving(); 1389 1390 if (enableChildrenLayers != mChildrenLayersEnabled) { 1391 mChildrenLayersEnabled = enableChildrenLayers; 1392 for (int i = 0; i < getPageCount(); i++) { 1393 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(mChildrenLayersEnabled); 1394 } 1395 } 1396 } 1397 1398 protected void onWallpaperTap(MotionEvent ev) { 1399 final int[] position = mTempCell; 1400 getLocationOnScreen(position); 1401 1402 int pointerIndex = ev.getActionIndex(); 1403 position[0] += (int) ev.getX(pointerIndex); 1404 position[1] += (int) ev.getY(pointerIndex); 1405 1406 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1407 ev.getAction() == MotionEvent.ACTION_UP 1408 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1409 position[0], position[1], 0, null); 1410 } 1411 1412 /* 1413 * This interpolator emulates the rate at which the perceived scale of an object changes 1414 * as its distance from a camera increases. When this interpolator is applied to a scale 1415 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1416 * from the camera. 1417 */ 1418 static class ZInterpolator implements TimeInterpolator { 1419 private float focalLength; 1420 1421 public ZInterpolator(float foc) { 1422 focalLength = foc; 1423 } 1424 1425 public float getInterpolation(float input) { 1426 return (1.0f - focalLength / (focalLength + input)) / 1427 (1.0f - focalLength / (focalLength + 1.0f)); 1428 } 1429 } 1430 1431 /* 1432 * The exact reverse of ZInterpolator. 1433 */ 1434 static class InverseZInterpolator implements TimeInterpolator { 1435 private ZInterpolator zInterpolator; 1436 public InverseZInterpolator(float foc) { 1437 zInterpolator = new ZInterpolator(foc); 1438 } 1439 public float getInterpolation(float input) { 1440 return 1 - zInterpolator.getInterpolation(1 - input); 1441 } 1442 } 1443 1444 /* 1445 * ZInterpolator compounded with an ease-out. 1446 */ 1447 static class ZoomOutInterpolator implements TimeInterpolator { 1448 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(0.75f); 1449 private final ZInterpolator zInterpolator = new ZInterpolator(0.13f); 1450 1451 public float getInterpolation(float input) { 1452 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1453 } 1454 } 1455 1456 /* 1457 * InvereZInterpolator compounded with an ease-out. 1458 */ 1459 static class ZoomInInterpolator implements TimeInterpolator { 1460 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1461 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1462 1463 public float getInterpolation(float input) { 1464 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1465 } 1466 } 1467 1468 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1469 1470 /* 1471 * 1472 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1473 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1474 * 1475 * These methods mark the appropriate pages as accepting drops (which alters their visual 1476 * appearance). 1477 * 1478 */ 1479 public void onDragStartedWithItem(View v) { 1480 final Canvas canvas = new Canvas(); 1481 1482 // The outline is used to visualize where the item will land if dropped 1483 mDragOutline = createDragOutline(v, canvas, DRAG_BITMAP_PADDING); 1484 } 1485 1486 public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, Paint alphaClipPaint) { 1487 final Canvas canvas = new Canvas(); 1488 1489 int[] size = estimateItemSize(info.spanX, info.spanY, info, false); 1490 1491 // The outline is used to visualize where the item will land if dropped 1492 mDragOutline = createDragOutline(b, canvas, DRAG_BITMAP_PADDING, size[0], 1493 size[1], alphaClipPaint); 1494 } 1495 1496 public void exitWidgetResizeMode() { 1497 DragLayer dragLayer = mLauncher.getDragLayer(); 1498 dragLayer.clearAllResizeFrames(); 1499 } 1500 1501 private void initAnimationArrays() { 1502 final int childCount = getChildCount(); 1503 if (mOldTranslationXs != null) return; 1504 mOldTranslationXs = new float[childCount]; 1505 mOldTranslationYs = new float[childCount]; 1506 mOldScaleXs = new float[childCount]; 1507 mOldScaleYs = new float[childCount]; 1508 mOldBackgroundAlphas = new float[childCount]; 1509 mOldBackgroundAlphaMultipliers = new float[childCount]; 1510 mOldAlphas = new float[childCount]; 1511 mOldRotationYs = new float[childCount]; 1512 mNewTranslationXs = new float[childCount]; 1513 mNewTranslationYs = new float[childCount]; 1514 mNewScaleXs = new float[childCount]; 1515 mNewScaleYs = new float[childCount]; 1516 mNewBackgroundAlphas = new float[childCount]; 1517 mNewBackgroundAlphaMultipliers = new float[childCount]; 1518 mNewAlphas = new float[childCount]; 1519 mNewRotationYs = new float[childCount]; 1520 } 1521 1522 Animator getChangeStateAnimation(final State state, boolean animated) { 1523 return getChangeStateAnimation(state, animated, 0); 1524 } 1525 1526 Animator getChangeStateAnimation(final State state, boolean animated, int delay) { 1527 if (mState == state) { 1528 return null; 1529 } 1530 1531 // Initialize animation arrays for the first time if necessary 1532 initAnimationArrays(); 1533 1534 AnimatorSet anim = animated ? new AnimatorSet() : null; 1535 1536 // Stop any scrolling, move to the current page right away 1537 setCurrentPage(getNextPage()); 1538 1539 final State oldState = mState; 1540 final boolean oldStateIsNormal = (oldState == State.NORMAL); 1541 final boolean oldStateIsSpringLoaded = (oldState == State.SPRING_LOADED); 1542 final boolean oldStateIsSmall = (oldState == State.SMALL); 1543 mState = state; 1544 final boolean stateIsNormal = (state == State.NORMAL); 1545 final boolean stateIsSpringLoaded = (state == State.SPRING_LOADED); 1546 final boolean stateIsSmall = (state == State.SMALL); 1547 float finalScaleFactor = 1.0f; 1548 float finalBackgroundAlpha = stateIsSpringLoaded ? 1.0f : 0f; 1549 float translationX = 0; 1550 float translationY = 0; 1551 boolean zoomIn = true; 1552 1553 if (state != State.NORMAL) { 1554 finalScaleFactor = mSpringLoadedShrinkFactor - (stateIsSmall ? 0.1f : 0); 1555 if (oldStateIsNormal && stateIsSmall) { 1556 zoomIn = false; 1557 setLayoutScale(finalScaleFactor); 1558 updateChildrenLayersEnabled(); 1559 } else { 1560 finalBackgroundAlpha = 1.0f; 1561 setLayoutScale(finalScaleFactor); 1562 } 1563 } else { 1564 setLayoutScale(1.0f); 1565 } 1566 1567 final int duration = zoomIn ? 1568 getResources().getInteger(R.integer.config_workspaceUnshrinkTime) : 1569 getResources().getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1570 for (int i = 0; i < getChildCount(); i++) { 1571 final CellLayout cl = (CellLayout) getChildAt(i); 1572 float rotation = 0f; 1573 float initialAlpha = cl.getAlpha(); 1574 float finalAlphaMultiplierValue = 1f; 1575 float finalAlpha = (!mFadeInAdjacentScreens || stateIsSpringLoaded || 1576 (i == mCurrentPage)) ? 1f : 0f; 1577 1578 // Determine the pages alpha during the state transition 1579 if ((oldStateIsSmall && stateIsNormal) || 1580 (oldStateIsNormal && stateIsSmall)) { 1581 // To/from workspace - only show the current page unless the transition is not 1582 // animated and the animation end callback below doesn't run; 1583 // or, if we're in spring-loaded mode 1584 if (i == mCurrentPage || !animated || oldStateIsSpringLoaded) { 1585 finalAlpha = 1f; 1586 finalAlphaMultiplierValue = 0f; 1587 } else { 1588 initialAlpha = 0f; 1589 finalAlpha = 0f; 1590 } 1591 } 1592 1593 // Update the rotation of the screen (don't apply rotation on Phone UI) 1594 if (LauncherApplication.isScreenLarge()) { 1595 if (i < mCurrentPage) { 1596 rotation = WORKSPACE_ROTATION; 1597 } else if (i > mCurrentPage) { 1598 rotation = -WORKSPACE_ROTATION; 1599 } 1600 } 1601 1602 // If the screen is not xlarge, then don't rotate the CellLayouts 1603 // NOTE: If we don't update the side pages alpha, then we should not hide the side 1604 // pages. see unshrink(). 1605 if (LauncherApplication.isScreenLarge()) { 1606 translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1607 } 1608 1609 mOldAlphas[i] = initialAlpha; 1610 mNewAlphas[i] = finalAlpha; 1611 if (animated) { 1612 mOldTranslationXs[i] = cl.getTranslationX(); 1613 mOldTranslationYs[i] = cl.getTranslationY(); 1614 mOldScaleXs[i] = cl.getScaleX(); 1615 mOldScaleYs[i] = cl.getScaleY(); 1616 mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1617 mOldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1618 mOldRotationYs[i] = cl.getRotationY(); 1619 1620 mNewTranslationXs[i] = translationX; 1621 mNewTranslationYs[i] = translationY; 1622 mNewScaleXs[i] = finalScaleFactor; 1623 mNewScaleYs[i] = finalScaleFactor; 1624 mNewBackgroundAlphas[i] = finalBackgroundAlpha; 1625 mNewBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1626 mNewRotationYs[i] = rotation; 1627 } else { 1628 cl.setTranslationX(translationX); 1629 cl.setTranslationY(translationY); 1630 cl.setScaleX(finalScaleFactor); 1631 cl.setScaleY(finalScaleFactor); 1632 cl.setBackgroundAlpha(finalBackgroundAlpha); 1633 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1634 cl.setShortcutAndWidgetAlpha(finalAlpha); 1635 cl.setRotationY(rotation); 1636 } 1637 } 1638 1639 if (animated) { 1640 for (int index = 0; index < getChildCount(); index++) { 1641 final int i = index; 1642 final CellLayout cl = (CellLayout) getChildAt(i); 1643 if (mOldAlphas[i] == 0 && mNewAlphas[i] == 0) { 1644 cl.setTranslationX(mNewTranslationXs[i]); 1645 cl.setTranslationY(mNewTranslationYs[i]); 1646 cl.setScaleX(mNewScaleXs[i]); 1647 cl.setScaleY(mNewScaleYs[i]); 1648 cl.setBackgroundAlpha(mNewBackgroundAlphas[i]); 1649 cl.setBackgroundAlphaMultiplier(mNewBackgroundAlphaMultipliers[i]); 1650 cl.setShortcutAndWidgetAlpha(mNewAlphas[i]); 1651 cl.setRotationY(mNewRotationYs[i]); 1652 } else { 1653 LauncherViewPropertyAnimator a = new LauncherViewPropertyAnimator(cl); 1654 a.translationX(mNewTranslationXs[i]) 1655 .translationY(mNewTranslationYs[i]) 1656 .scaleX(mNewScaleXs[i]) 1657 .scaleY(mNewScaleYs[i]) 1658 .setDuration(duration) 1659 .setInterpolator(mZoomInInterpolator); 1660 anim.play(a); 1661 1662 if (mOldAlphas[i] != mNewAlphas[i]) { 1663 LauncherViewPropertyAnimator alphaAnim = 1664 new LauncherViewPropertyAnimator(cl.getShortcutsAndWidgets()); 1665 alphaAnim.alpha(mNewAlphas[i]) 1666 .setDuration(duration) 1667 .setInterpolator(mZoomInInterpolator); 1668 anim.play(alphaAnim); 1669 } 1670 if (mOldRotationYs[i] != 0 || mNewRotationYs[i] != 0) { 1671 ValueAnimator rotate = ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1672 rotate.setInterpolator(new DecelerateInterpolator(2.0f)); 1673 rotate.addUpdateListener(new LauncherAnimatorUpdateListener() { 1674 public void onAnimationUpdate(float a, float b) { 1675 cl.setRotationY(a * mOldRotationYs[i] + b * mNewRotationYs[i]); 1676 } 1677 }); 1678 anim.play(rotate); 1679 } 1680 if (mOldBackgroundAlphas[i] != 0 || 1681 mNewBackgroundAlphas[i] != 0 || 1682 mOldBackgroundAlphaMultipliers[i] != 0 || 1683 mNewBackgroundAlphaMultipliers[i] != 0) { 1684 ValueAnimator bgAnim = ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1685 bgAnim.setInterpolator(mZoomInInterpolator); 1686 bgAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1687 public void onAnimationUpdate(float a, float b) { 1688 cl.setBackgroundAlpha( 1689 a * mOldBackgroundAlphas[i] + 1690 b * mNewBackgroundAlphas[i]); 1691 cl.setBackgroundAlphaMultiplier( 1692 a * mOldBackgroundAlphaMultipliers[i] + 1693 b * mNewBackgroundAlphaMultipliers[i]); 1694 } 1695 }); 1696 anim.play(bgAnim); 1697 } 1698 } 1699 } 1700 buildPageHardwareLayers(); 1701 anim.setStartDelay(delay); 1702 } 1703 1704 if (stateIsSpringLoaded) { 1705 // Right now we're covered by Apps Customize 1706 // Show the background gradient immediately, so the gradient will 1707 // be showing once AppsCustomize disappears 1708 animateBackgroundGradient(getResources().getInteger( 1709 R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, false); 1710 } else { 1711 // Fade the background gradient away 1712 animateBackgroundGradient(0f, true); 1713 } 1714 return anim; 1715 } 1716 1717 @Override 1718 public void onLauncherTransitionPrepare(Launcher l, boolean animated, boolean toWorkspace) { 1719 mIsSwitchingState = true; 1720 cancelScrollingIndicatorAnimations(); 1721 } 1722 1723 @Override 1724 public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) { 1725 } 1726 1727 @Override 1728 public void onLauncherTransitionStep(Launcher l, float t) { 1729 mTransitionProgress = t; 1730 } 1731 1732 @Override 1733 public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) { 1734 mIsSwitchingState = false; 1735 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 1736 updateChildrenLayersEnabled(); 1737 // The code in getChangeStateAnimation to determine initialAlpha and finalAlpha will ensure 1738 // ensure that only the current page is visible during (and subsequently, after) the 1739 // transition animation. If fade adjacent pages is disabled, then re-enable the page 1740 // visibility after the transition animation. 1741 if (!mFadeInAdjacentScreens) { 1742 for (int i = 0; i < getChildCount(); i++) { 1743 final CellLayout cl = (CellLayout) getChildAt(i); 1744 cl.setShortcutAndWidgetAlpha(1f); 1745 } 1746 } 1747 } 1748 1749 @Override 1750 public View getContent() { 1751 return this; 1752 } 1753 1754 /** 1755 * Draw the View v into the given Canvas. 1756 * 1757 * @param v the view to draw 1758 * @param destCanvas the canvas to draw on 1759 * @param padding the horizontal and vertical padding to use when drawing 1760 */ 1761 private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { 1762 final Rect clipRect = mTempRect; 1763 v.getDrawingRect(clipRect); 1764 1765 boolean textVisible = false; 1766 1767 destCanvas.save(); 1768 if (v instanceof TextView && pruneToDrawable) { 1769 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1770 clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); 1771 destCanvas.translate(padding / 2, padding / 2); 1772 d.draw(destCanvas); 1773 } else { 1774 if (v instanceof FolderIcon) { 1775 // For FolderIcons the text can bleed into the icon area, and so we need to 1776 // hide the text completely (which can't be achieved by clipping). 1777 if (((FolderIcon) v).getTextVisible()) { 1778 ((FolderIcon) v).setTextVisible(false); 1779 textVisible = true; 1780 } 1781 } else if (v instanceof BubbleTextView) { 1782 final BubbleTextView tv = (BubbleTextView) v; 1783 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1784 tv.getLayout().getLineTop(0); 1785 } else if (v instanceof TextView) { 1786 final TextView tv = (TextView) v; 1787 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1788 tv.getLayout().getLineTop(0); 1789 } 1790 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1791 destCanvas.clipRect(clipRect, Op.REPLACE); 1792 v.draw(destCanvas); 1793 1794 // Restore text visibility of FolderIcon if necessary 1795 if (textVisible) { 1796 ((FolderIcon) v).setTextVisible(true); 1797 } 1798 } 1799 destCanvas.restore(); 1800 } 1801 1802 /** 1803 * Returns a new bitmap to show when the given View is being dragged around. 1804 * Responsibility for the bitmap is transferred to the caller. 1805 */ 1806 public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1807 Bitmap b; 1808 1809 if (v instanceof TextView) { 1810 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1811 b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, 1812 d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); 1813 } else { 1814 b = Bitmap.createBitmap( 1815 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1816 } 1817 1818 canvas.setBitmap(b); 1819 drawDragView(v, canvas, padding, true); 1820 canvas.setBitmap(null); 1821 1822 return b; 1823 } 1824 1825 /** 1826 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1827 * Responsibility for the bitmap is transferred to the caller. 1828 */ 1829 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1830 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1831 final Bitmap b = Bitmap.createBitmap( 1832 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1833 1834 canvas.setBitmap(b); 1835 drawDragView(v, canvas, padding, true); 1836 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1837 canvas.setBitmap(null); 1838 return b; 1839 } 1840 1841 /** 1842 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1843 * Responsibility for the bitmap is transferred to the caller. 1844 */ 1845 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h, 1846 Paint alphaClipPaint) { 1847 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1848 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1849 canvas.setBitmap(b); 1850 1851 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 1852 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 1853 (h - padding) / (float) orig.getHeight()); 1854 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 1855 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 1856 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 1857 1858 // center the image 1859 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 1860 1861 canvas.drawBitmap(orig, src, dst, null); 1862 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor, 1863 alphaClipPaint); 1864 canvas.setBitmap(null); 1865 1866 return b; 1867 } 1868 1869 void startDrag(CellLayout.CellInfo cellInfo) { 1870 View child = cellInfo.cell; 1871 1872 // Make sure the drag was started by a long press as opposed to a long click. 1873 if (!child.isInTouchMode()) { 1874 return; 1875 } 1876 1877 mDragInfo = cellInfo; 1878 child.setVisibility(INVISIBLE); 1879 CellLayout layout = (CellLayout) child.getParent().getParent(); 1880 layout.prepareChildForDrag(child); 1881 1882 child.clearFocus(); 1883 child.setPressed(false); 1884 1885 final Canvas canvas = new Canvas(); 1886 1887 // The outline is used to visualize where the item will land if dropped 1888 mDragOutline = createDragOutline(child, canvas, DRAG_BITMAP_PADDING); 1889 beginDragShared(child, this); 1890 } 1891 1892 public void beginDragShared(View child, DragSource source) { 1893 Resources r = getResources(); 1894 1895 // The drag bitmap follows the touch point around on the screen 1896 final Bitmap b = createDragBitmap(child, new Canvas(), DRAG_BITMAP_PADDING); 1897 1898 final int bmpWidth = b.getWidth(); 1899 final int bmpHeight = b.getHeight(); 1900 1901 mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 1902 int dragLayerX = 1903 Math.round(mTempXY[0] - (bmpWidth - child.getScaleX() * child.getWidth()) / 2); 1904 int dragLayerY = 1905 Math.round(mTempXY[1] - (bmpHeight - child.getScaleY() * bmpHeight) / 2 1906 - DRAG_BITMAP_PADDING / 2); 1907 1908 Point dragVisualizeOffset = null; 1909 Rect dragRect = null; 1910 if (child instanceof BubbleTextView || child instanceof PagedViewIcon) { 1911 int iconSize = r.getDimensionPixelSize(R.dimen.app_icon_size); 1912 int iconPaddingTop = r.getDimensionPixelSize(R.dimen.app_icon_padding_top); 1913 int top = child.getPaddingTop(); 1914 int left = (bmpWidth - iconSize) / 2; 1915 int right = left + iconSize; 1916 int bottom = top + iconSize; 1917 dragLayerY += top; 1918 // Note: The drag region is used to calculate drag layer offsets, but the 1919 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 1920 dragVisualizeOffset = new Point(-DRAG_BITMAP_PADDING / 2, 1921 iconPaddingTop - DRAG_BITMAP_PADDING / 2); 1922 dragRect = new Rect(left, top, right, bottom); 1923 } else if (child instanceof FolderIcon) { 1924 int previewSize = r.getDimensionPixelSize(R.dimen.folder_preview_size); 1925 dragRect = new Rect(0, 0, child.getWidth(), previewSize); 1926 } 1927 1928 // Clear the pressed state if necessary 1929 if (child instanceof BubbleTextView) { 1930 BubbleTextView icon = (BubbleTextView) child; 1931 icon.clearPressedOrFocusedBackground(); 1932 } 1933 1934 mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 1935 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect, child.getScaleX()); 1936 b.recycle(); 1937 1938 // Show the scrolling indicator when you pick up an item 1939 showScrollingIndicator(false); 1940 } 1941 1942 void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, int screen, 1943 int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { 1944 View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); 1945 1946 final int[] cellXY = new int[2]; 1947 target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1948 addInScreen(view, container, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1949 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, cellXY[0], 1950 cellXY[1]); 1951 } 1952 1953 public boolean transitionStateShouldAllowDrop() { 1954 return ((!isSwitchingState() || mTransitionProgress > 0.5f) && mState != State.SMALL); 1955 } 1956 1957 /** 1958 * {@inheritDoc} 1959 */ 1960 public boolean acceptDrop(DragObject d) { 1961 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1962 CellLayout dropTargetLayout = mDropToLayout; 1963 if (d.dragSource != this) { 1964 // Don't accept the drop if we're not over a screen at time of drop 1965 if (dropTargetLayout == null) { 1966 return false; 1967 } 1968 if (!transitionStateShouldAllowDrop()) return false; 1969 1970 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 1971 d.dragView, mDragViewVisualCenter); 1972 1973 // We want the point to be mapped to the dragTarget. 1974 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 1975 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 1976 } else { 1977 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 1978 } 1979 1980 int spanX = 1; 1981 int spanY = 1; 1982 if (mDragInfo != null) { 1983 final CellLayout.CellInfo dragCellInfo = mDragInfo; 1984 spanX = dragCellInfo.spanX; 1985 spanY = dragCellInfo.spanY; 1986 } else { 1987 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 1988 spanX = dragInfo.spanX; 1989 spanY = dragInfo.spanY; 1990 } 1991 1992 int minSpanX = spanX; 1993 int minSpanY = spanY; 1994 if (d.dragInfo instanceof PendingAddWidgetInfo) { 1995 minSpanX = ((PendingAddWidgetInfo) d.dragInfo).minSpanX; 1996 minSpanY = ((PendingAddWidgetInfo) d.dragInfo).minSpanY; 1997 } 1998 1999 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2000 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, dropTargetLayout, 2001 mTargetCell); 2002 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2003 mDragViewVisualCenter[1], mTargetCell); 2004 if (willCreateUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, 2005 mTargetCell, distance, true)) { 2006 return true; 2007 } 2008 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, 2009 mTargetCell, distance)) { 2010 return true; 2011 } 2012 2013 int[] resultSpan = new int[2]; 2014 mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], 2015 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2016 null, mTargetCell, resultSpan, CellLayout.MODE_ACCEPT_DROP); 2017 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2018 2019 // Don't accept the drop if there's no room for the item 2020 if (!foundCell) { 2021 // Don't show the message if we are dropping on the AllApps button and the hotseat 2022 // is full 2023 boolean isHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2024 if (mTargetCell != null && isHotseat) { 2025 Hotseat hotseat = mLauncher.getHotseat(); 2026 if (hotseat.isAllAppsButtonRank( 2027 hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { 2028 return false; 2029 } 2030 } 2031 2032 mLauncher.showOutOfSpaceMessage(isHotseat); 2033 return false; 2034 } 2035 } 2036 return true; 2037 } 2038 2039 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, float 2040 distance, boolean considerTimeout) { 2041 if (distance > mMaxDistanceForFolderCreation) return false; 2042 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2043 2044 if (dropOverView != null) { 2045 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2046 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2047 return false; 2048 } 2049 } 2050 2051 boolean hasntMoved = false; 2052 if (mDragInfo != null) { 2053 hasntMoved = dropOverView == mDragInfo.cell; 2054 } 2055 2056 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2057 return false; 2058 } 2059 2060 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2061 boolean willBecomeShortcut = 2062 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2063 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2064 2065 return (aboveShortcut && willBecomeShortcut); 2066 } 2067 2068 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell, 2069 float distance) { 2070 if (distance > mMaxDistanceForFolderCreation) return false; 2071 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2072 2073 if (dropOverView != null) { 2074 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2075 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2076 return false; 2077 } 2078 } 2079 2080 if (dropOverView instanceof FolderIcon) { 2081 FolderIcon fi = (FolderIcon) dropOverView; 2082 if (fi.acceptDrop(dragInfo)) { 2083 return true; 2084 } 2085 } 2086 return false; 2087 } 2088 2089 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2090 int[] targetCell, float distance, boolean external, DragView dragView, 2091 Runnable postAnimationRunnable) { 2092 if (distance > mMaxDistanceForFolderCreation) return false; 2093 View v = target.getChildAt(targetCell[0], targetCell[1]); 2094 2095 boolean hasntMoved = false; 2096 if (mDragInfo != null) { 2097 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2098 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2099 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2100 } 2101 2102 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2103 mCreateUserFolderOnDrop = false; 2104 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 2105 2106 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2107 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2108 2109 if (aboveShortcut && willBecomeShortcut) { 2110 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2111 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2112 // if the drag started here, we need to remove it from the workspace 2113 if (!external) { 2114 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2115 } 2116 2117 Rect folderLocation = new Rect(); 2118 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2119 target.removeView(v); 2120 2121 FolderIcon fi = 2122 mLauncher.addFolder(target, container, screen, targetCell[0], targetCell[1]); 2123 destInfo.cellX = -1; 2124 destInfo.cellY = -1; 2125 sourceInfo.cellX = -1; 2126 sourceInfo.cellY = -1; 2127 2128 // If the dragView is null, we can't animate 2129 boolean animate = dragView != null; 2130 if (animate) { 2131 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2132 postAnimationRunnable); 2133 } else { 2134 fi.addItem(destInfo); 2135 fi.addItem(sourceInfo); 2136 } 2137 return true; 2138 } 2139 return false; 2140 } 2141 2142 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2143 float distance, DragObject d, boolean external) { 2144 if (distance > mMaxDistanceForFolderCreation) return false; 2145 2146 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2147 if (!mAddToExistingFolderOnDrop) return false; 2148 mAddToExistingFolderOnDrop = false; 2149 2150 if (dropOverView instanceof FolderIcon) { 2151 FolderIcon fi = (FolderIcon) dropOverView; 2152 if (fi.acceptDrop(d.dragInfo)) { 2153 fi.onDrop(d); 2154 2155 // if the drag started here, we need to remove it from the workspace 2156 if (!external) { 2157 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2158 } 2159 return true; 2160 } 2161 } 2162 return false; 2163 } 2164 2165 public void onDrop(final DragObject d) { 2166 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2167 mDragViewVisualCenter); 2168 2169 CellLayout dropTargetLayout = mDropToLayout; 2170 2171 // We want the point to be mapped to the dragTarget. 2172 if (dropTargetLayout != null) { 2173 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 2174 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2175 } else { 2176 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 2177 } 2178 } 2179 2180 int snapScreen = -1; 2181 boolean resizeOnDrop = false; 2182 if (d.dragSource != this) { 2183 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2184 (int) mDragViewVisualCenter[1] }; 2185 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2186 } else if (mDragInfo != null) { 2187 final View cell = mDragInfo.cell; 2188 2189 Runnable resizeRunnable = null; 2190 if (dropTargetLayout != null) { 2191 // Move internally 2192 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2193 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2194 long container = hasMovedIntoHotseat ? 2195 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2196 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2197 int screen = (mTargetCell[0] < 0) ? 2198 mDragInfo.screen : indexOfChild(dropTargetLayout); 2199 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2200 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2201 // First we find the cell nearest to point at which the item is 2202 // dropped, without any consideration to whether there is an item there. 2203 2204 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2205 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2206 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2207 mDragViewVisualCenter[1], mTargetCell); 2208 2209 // If the item being dropped is a shortcut and the nearest drop 2210 // cell also contains a shortcut, then create a folder with the two shortcuts. 2211 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2212 dropTargetLayout, mTargetCell, distance, false, d.dragView, null)) { 2213 return; 2214 } 2215 2216 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, 2217 distance, d, false)) { 2218 return; 2219 } 2220 2221 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2222 // we need to find the nearest cell location that is vacant 2223 ItemInfo item = (ItemInfo) d.dragInfo; 2224 int minSpanX = item.spanX; 2225 int minSpanY = item.spanY; 2226 if (item.minSpanX > 0 && item.minSpanY > 0) { 2227 minSpanX = item.minSpanX; 2228 minSpanY = item.minSpanY; 2229 } 2230 2231 int[] resultSpan = new int[2]; 2232 mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], 2233 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, cell, 2234 mTargetCell, resultSpan, CellLayout.MODE_ON_DROP); 2235 2236 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2237 if (foundCell && (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY)) { 2238 resizeOnDrop = true; 2239 item.spanX = resultSpan[0]; 2240 item.spanY = resultSpan[1]; 2241 } 2242 2243 if (mCurrentPage != screen && !hasMovedIntoHotseat) { 2244 snapScreen = screen; 2245 snapToPage(screen); 2246 } 2247 2248 if (foundCell) { 2249 final ItemInfo info = (ItemInfo) cell.getTag(); 2250 if (hasMovedLayouts) { 2251 // Reparent the view 2252 getParentCellLayoutForView(cell).removeView(cell); 2253 addInScreen(cell, container, screen, mTargetCell[0], mTargetCell[1], 2254 info.spanX, info.spanY); 2255 } 2256 2257 // update the item's position after drop 2258 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2259 lp.cellX = lp.tmpCellX = mTargetCell[0]; 2260 lp.cellY = lp.tmpCellY = mTargetCell[1]; 2261 lp.cellHSpan = item.spanX; 2262 lp.cellVSpan = item.spanY; 2263 lp.isLockedToGrid = true; 2264 cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screen, 2265 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2266 2267 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2268 cell instanceof LauncherAppWidgetHostView) { 2269 final CellLayout cellLayout = dropTargetLayout; 2270 // We post this call so that the widget has a chance to be placed 2271 // in its final location 2272 2273 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2274 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2275 if (pinfo != null && 2276 pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2277 final Runnable addResizeFrame = new Runnable() { 2278 public void run() { 2279 DragLayer dragLayer = mLauncher.getDragLayer(); 2280 dragLayer.addResizeFrame(info, hostView, cellLayout); 2281 } 2282 }; 2283 resizeRunnable = (new Runnable() { 2284 public void run() { 2285 if (!isPageMoving()) { 2286 addResizeFrame.run(); 2287 } else { 2288 mDelayedResizeRunnable = addResizeFrame; 2289 } 2290 } 2291 }); 2292 } 2293 } 2294 2295 LauncherModel.moveItemInDatabase(mLauncher, info, container, screen, lp.cellX, 2296 lp.cellY); 2297 } else { 2298 // If we can't find a drop location, we return the item to its original position 2299 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2300 mTargetCell[0] = lp.cellX; 2301 mTargetCell[1] = lp.cellY; 2302 } 2303 } 2304 2305 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2306 final Runnable finalResizeRunnable = resizeRunnable; 2307 // Prepare it to be animated into its new position 2308 // This must be called after the view has been re-parented 2309 final Runnable onCompleteRunnable = new Runnable() { 2310 @Override 2311 public void run() { 2312 mAnimatingViewIntoPlace = false; 2313 updateChildrenLayersEnabled(); 2314 if (finalResizeRunnable != null) { 2315 finalResizeRunnable.run(); 2316 } 2317 } 2318 }; 2319 mAnimatingViewIntoPlace = true; 2320 if (d.dragView.hasDrawn()) { 2321 final ItemInfo info = (ItemInfo) cell.getTag(); 2322 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET) { 2323 int animationType = resizeOnDrop ? ANIMATE_INTO_POSITION_AND_RESIZE : 2324 ANIMATE_INTO_POSITION_AND_DISAPPEAR; 2325 animateWidgetDrop(info, parent, d.dragView, 2326 onCompleteRunnable, animationType, cell, false); 2327 } else { 2328 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2329 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2330 onCompleteRunnable, this); 2331 } 2332 } else { 2333 d.deferDragViewCleanupPostAnimation = false; 2334 cell.setVisibility(VISIBLE); 2335 } 2336 parent.onDropChild(cell); 2337 } 2338 } 2339 2340 public void setFinalScrollForPageChange(int screen) { 2341 if (screen >= 0) { 2342 mSavedScrollX = getScrollX(); 2343 CellLayout cl = (CellLayout) getChildAt(screen); 2344 mSavedTranslationX = cl.getTranslationX(); 2345 mSavedRotationY = cl.getRotationY(); 2346 final int newX = getChildOffset(screen) - getRelativeChildOffset(screen); 2347 setScrollX(newX); 2348 cl.setTranslationX(0f); 2349 cl.setRotationY(0f); 2350 } 2351 } 2352 2353 public void resetFinalScrollForPageChange(int screen) { 2354 if (screen >= 0) { 2355 CellLayout cl = (CellLayout) getChildAt(screen); 2356 setScrollX(mSavedScrollX); 2357 cl.setTranslationX(mSavedTranslationX); 2358 cl.setRotationY(mSavedRotationY); 2359 } 2360 } 2361 2362 public void getViewLocationRelativeToSelf(View v, int[] location) { 2363 getLocationInWindow(location); 2364 int x = location[0]; 2365 int y = location[1]; 2366 2367 v.getLocationInWindow(location); 2368 int vX = location[0]; 2369 int vY = location[1]; 2370 2371 location[0] = vX - x; 2372 location[1] = vY - y; 2373 } 2374 2375 public void onDragEnter(DragObject d) { 2376 mDragEnforcer.onDragEnter(); 2377 mCreateUserFolderOnDrop = false; 2378 mAddToExistingFolderOnDrop = false; 2379 2380 mDropToLayout = null; 2381 CellLayout layout = getCurrentDropLayout(); 2382 setCurrentDropLayout(layout); 2383 setCurrentDragOverlappingLayout(layout); 2384 2385 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2386 // don't need to show the outlines 2387 if (LauncherApplication.isScreenLarge()) { 2388 showOutlines(); 2389 } 2390 } 2391 2392 public void onDragExit(DragObject d) { 2393 mDragEnforcer.onDragExit(); 2394 2395 // Here we store the final page that will be dropped to, if the workspace in fact 2396 // receives the drop 2397 if (mInScrollArea) { 2398 mDropToLayout = mDragOverlappingLayout; 2399 } else { 2400 mDropToLayout = mDragTargetLayout; 2401 } 2402 2403 if (mDragMode == DRAG_MODE_CREATE_FOLDER) { 2404 mCreateUserFolderOnDrop = true; 2405 } else if (mDragMode == DRAG_MODE_ADD_TO_FOLDER) { 2406 mAddToExistingFolderOnDrop = true; 2407 } 2408 2409 // Reset the scroll area and previous drag target 2410 onResetScrollArea(); 2411 setCurrentDropLayout(null); 2412 setCurrentDragOverlappingLayout(null); 2413 2414 mSpringLoadedDragController.cancel(); 2415 2416 if (!mIsPageMoving) { 2417 hideOutlines(); 2418 } 2419 } 2420 2421 void setCurrentDropLayout(CellLayout layout) { 2422 if (mDragTargetLayout != null) { 2423 mDragTargetLayout.revertTempState(); 2424 mDragTargetLayout.onDragExit(); 2425 } 2426 mDragTargetLayout = layout; 2427 if (mDragTargetLayout != null) { 2428 mDragTargetLayout.onDragEnter(); 2429 } 2430 cleanupReorder(true); 2431 cleanupFolderCreation(); 2432 setCurrentDropOverCell(-1, -1); 2433 } 2434 2435 void setCurrentDragOverlappingLayout(CellLayout layout) { 2436 if (mDragOverlappingLayout != null) { 2437 mDragOverlappingLayout.setIsDragOverlapping(false); 2438 } 2439 mDragOverlappingLayout = layout; 2440 if (mDragOverlappingLayout != null) { 2441 mDragOverlappingLayout.setIsDragOverlapping(true); 2442 } 2443 invalidate(); 2444 } 2445 2446 void setCurrentDropOverCell(int x, int y) { 2447 if (x != mDragOverX || y != mDragOverY) { 2448 mDragOverX = x; 2449 mDragOverY = y; 2450 setDragMode(DRAG_MODE_NONE); 2451 } 2452 } 2453 2454 void setDragMode(int dragMode) { 2455 if (dragMode != mDragMode) { 2456 if (dragMode == DRAG_MODE_NONE) { 2457 cleanupAddToFolder(); 2458 // We don't want to cancel the re-order alarm every time the target cell changes 2459 // as this feels to slow / unresponsive. 2460 cleanupReorder(false); 2461 cleanupFolderCreation(); 2462 } else if (dragMode == DRAG_MODE_ADD_TO_FOLDER) { 2463 cleanupReorder(true); 2464 cleanupFolderCreation(); 2465 } else if (dragMode == DRAG_MODE_CREATE_FOLDER) { 2466 cleanupAddToFolder(); 2467 cleanupReorder(true); 2468 } else if (dragMode == DRAG_MODE_REORDER) { 2469 cleanupAddToFolder(); 2470 cleanupFolderCreation(); 2471 } 2472 mDragMode = dragMode; 2473 } 2474 } 2475 2476 private void cleanupFolderCreation() { 2477 if (mDragFolderRingAnimator != null) { 2478 mDragFolderRingAnimator.animateToNaturalState(); 2479 } 2480 mFolderCreationAlarm.cancelAlarm(); 2481 } 2482 2483 private void cleanupAddToFolder() { 2484 if (mDragOverFolderIcon != null) { 2485 mDragOverFolderIcon.onDragExit(null); 2486 mDragOverFolderIcon = null; 2487 } 2488 } 2489 2490 private void cleanupReorder(boolean cancelAlarm) { 2491 // Any pending reorders are canceled 2492 if (cancelAlarm) { 2493 mReorderAlarm.cancelAlarm(); 2494 } 2495 mLastReorderX = -1; 2496 mLastReorderY = -1; 2497 } 2498 2499 public DropTarget getDropTargetDelegate(DragObject d) { 2500 return null; 2501 } 2502 2503 /* 2504 * 2505 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2506 * coordinate space. The argument xy is modified with the return result. 2507 * 2508 */ 2509 void mapPointFromSelfToChild(View v, float[] xy) { 2510 mapPointFromSelfToChild(v, xy, null); 2511 } 2512 2513 /* 2514 * 2515 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2516 * coordinate space. The argument xy is modified with the return result. 2517 * 2518 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2519 * computing it itself; we use this to avoid redundant matrix inversions in 2520 * findMatchingPageForDragOver 2521 * 2522 */ 2523 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2524 if (cachedInverseMatrix == null) { 2525 v.getMatrix().invert(mTempInverseMatrix); 2526 cachedInverseMatrix = mTempInverseMatrix; 2527 } 2528 int scrollX = getScrollX(); 2529 if (mNextPage != INVALID_PAGE) { 2530 scrollX = mScroller.getFinalX(); 2531 } 2532 xy[0] = xy[0] + scrollX - v.getLeft(); 2533 xy[1] = xy[1] + getScrollY() - v.getTop(); 2534 cachedInverseMatrix.mapPoints(xy); 2535 } 2536 2537 /* 2538 * Maps a point from the Workspace's coordinate system to another sibling view's. (Workspace 2539 * covers the full screen) 2540 */ 2541 void mapPointFromSelfToSibling(View v, float[] xy) { 2542 xy[0] = xy[0] - v.getLeft(); 2543 xy[1] = xy[1] - v.getTop(); 2544 } 2545 2546 void mapPointFromSelfToHotseatLayout(Hotseat hotseat, float[] xy) { 2547 xy[0] = xy[0] - hotseat.getLeft() - hotseat.getLayout().getLeft(); 2548 xy[1] = xy[1] - hotseat.getTop() - hotseat.getLayout().getTop(); 2549 } 2550 2551 /* 2552 * 2553 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2554 * the parent View's coordinate space. The argument xy is modified with the return result. 2555 * 2556 */ 2557 void mapPointFromChildToSelf(View v, float[] xy) { 2558 v.getMatrix().mapPoints(xy); 2559 int scrollX = getScrollX(); 2560 if (mNextPage != INVALID_PAGE) { 2561 scrollX = mScroller.getFinalX(); 2562 } 2563 xy[0] -= (scrollX - v.getLeft()); 2564 xy[1] -= (getScrollY() - v.getTop()); 2565 } 2566 2567 static private float squaredDistance(float[] point1, float[] point2) { 2568 float distanceX = point1[0] - point2[0]; 2569 float distanceY = point2[1] - point2[1]; 2570 return distanceX * distanceX + distanceY * distanceY; 2571 } 2572 2573 /* 2574 * 2575 * Returns true if the passed CellLayout cl overlaps with dragView 2576 * 2577 */ 2578 boolean overlaps(CellLayout cl, DragView dragView, 2579 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2580 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2581 final float[] draggedItemTopLeft = mTempDragCoordinates; 2582 draggedItemTopLeft[0] = dragViewX; 2583 draggedItemTopLeft[1] = dragViewY; 2584 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2585 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2586 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2587 2588 // Transform the dragged item's top left coordinates 2589 // to the CellLayout's local coordinates 2590 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2591 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2592 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2593 2594 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2595 // Transform the dragged item's bottom right coordinates 2596 // to the CellLayout's local coordinates 2597 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2598 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2599 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2600 2601 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2602 float overlap = (overlapRegionRight - overlapRegionLeft) * 2603 (overlapRegionBottom - overlapRegionTop); 2604 if (overlap > 0) { 2605 return true; 2606 } 2607 } 2608 } 2609 return false; 2610 } 2611 2612 /* 2613 * 2614 * This method returns the CellLayout that is currently being dragged to. In order to drag 2615 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2616 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2617 * 2618 * Return null if no CellLayout is currently being dragged over 2619 * 2620 */ 2621 private CellLayout findMatchingPageForDragOver( 2622 DragView dragView, float originX, float originY, boolean exact) { 2623 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2624 // with the item being dragged and then choose the one that's closest to the touch point 2625 final int screenCount = getChildCount(); 2626 CellLayout bestMatchingScreen = null; 2627 float smallestDistSoFar = Float.MAX_VALUE; 2628 2629 for (int i = 0; i < screenCount; i++) { 2630 CellLayout cl = (CellLayout) getChildAt(i); 2631 2632 final float[] touchXy = {originX, originY}; 2633 // Transform the touch coordinates to the CellLayout's local coordinates 2634 // If the touch point is within the bounds of the cell layout, we can return immediately 2635 cl.getMatrix().invert(mTempInverseMatrix); 2636 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2637 2638 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2639 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2640 return cl; 2641 } 2642 2643 if (!exact) { 2644 // Get the center of the cell layout in screen coordinates 2645 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2646 cellLayoutCenter[0] = cl.getWidth()/2; 2647 cellLayoutCenter[1] = cl.getHeight()/2; 2648 mapPointFromChildToSelf(cl, cellLayoutCenter); 2649 2650 touchXy[0] = originX; 2651 touchXy[1] = originY; 2652 2653 // Calculate the distance between the center of the CellLayout 2654 // and the touch point 2655 float dist = squaredDistance(touchXy, cellLayoutCenter); 2656 2657 if (dist < smallestDistSoFar) { 2658 smallestDistSoFar = dist; 2659 bestMatchingScreen = cl; 2660 } 2661 } 2662 } 2663 return bestMatchingScreen; 2664 } 2665 2666 // This is used to compute the visual center of the dragView. This point is then 2667 // used to visualize drop locations and determine where to drop an item. The idea is that 2668 // the visual center represents the user's interpretation of where the item is, and hence 2669 // is the appropriate point to use when determining drop location. 2670 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2671 DragView dragView, float[] recycle) { 2672 float res[]; 2673 if (recycle == null) { 2674 res = new float[2]; 2675 } else { 2676 res = recycle; 2677 } 2678 2679 // First off, the drag view has been shifted in a way that is not represented in the 2680 // x and y values or the x/yOffsets. Here we account for that shift. 2681 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2682 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2683 2684 // These represent the visual top and left of drag view if a dragRect was provided. 2685 // If a dragRect was not provided, then they correspond to the actual view left and 2686 // top, as the dragRect is in that case taken to be the entire dragView. 2687 // R.dimen.dragViewOffsetY. 2688 int left = x - xOffset; 2689 int top = y - yOffset; 2690 2691 // In order to find the visual center, we shift by half the dragRect 2692 res[0] = left + dragView.getDragRegion().width() / 2; 2693 res[1] = top + dragView.getDragRegion().height() / 2; 2694 2695 return res; 2696 } 2697 2698 private boolean isDragWidget(DragObject d) { 2699 return (d.dragInfo instanceof LauncherAppWidgetInfo || 2700 d.dragInfo instanceof PendingAddWidgetInfo); 2701 } 2702 private boolean isExternalDragWidget(DragObject d) { 2703 return d.dragSource != this && isDragWidget(d); 2704 } 2705 2706 public void onDragOver(DragObject d) { 2707 // Skip drag over events while we are dragging over side pages 2708 if (mInScrollArea || mIsSwitchingState || mState == State.SMALL) return; 2709 2710 Rect r = new Rect(); 2711 CellLayout layout = null; 2712 ItemInfo item = (ItemInfo) d.dragInfo; 2713 2714 // Ensure that we have proper spans for the item that we are dropping 2715 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2716 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2717 d.dragView, mDragViewVisualCenter); 2718 2719 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2720 // Identify whether we have dragged over a side page 2721 if (isSmall()) { 2722 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 2723 mLauncher.getHotseat().getHitRect(r); 2724 if (r.contains(d.x, d.y)) { 2725 layout = mLauncher.getHotseat().getLayout(); 2726 } 2727 } 2728 if (layout == null) { 2729 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false); 2730 } 2731 if (layout != mDragTargetLayout) { 2732 2733 setCurrentDropLayout(layout); 2734 setCurrentDragOverlappingLayout(layout); 2735 2736 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 2737 if (isInSpringLoadedMode) { 2738 if (mLauncher.isHotseatLayout(layout)) { 2739 mSpringLoadedDragController.cancel(); 2740 } else { 2741 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2742 } 2743 } 2744 } 2745 } else { 2746 // Test to see if we are over the hotseat otherwise just use the current page 2747 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 2748 mLauncher.getHotseat().getHitRect(r); 2749 if (r.contains(d.x, d.y)) { 2750 layout = mLauncher.getHotseat().getLayout(); 2751 } 2752 } 2753 if (layout == null) { 2754 layout = getCurrentDropLayout(); 2755 } 2756 if (layout != mDragTargetLayout) { 2757 setCurrentDropLayout(layout); 2758 setCurrentDragOverlappingLayout(layout); 2759 } 2760 } 2761 2762 // Handle the drag over 2763 if (mDragTargetLayout != null) { 2764 // We want the point to be mapped to the dragTarget. 2765 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2766 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2767 } else { 2768 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2769 } 2770 2771 ItemInfo info = (ItemInfo) d.dragInfo; 2772 2773 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2774 (int) mDragViewVisualCenter[1], 1, 1, mDragTargetLayout, mTargetCell); 2775 2776 setCurrentDropOverCell(mTargetCell[0], mTargetCell[1]); 2777 2778 float targetCellDistance = mDragTargetLayout.getDistanceFromCell( 2779 mDragViewVisualCenter[0], mDragViewVisualCenter[1], mTargetCell); 2780 2781 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2782 mTargetCell[1]); 2783 2784 manageFolderFeedback(info, mDragTargetLayout, mTargetCell, 2785 targetCellDistance, dragOverView); 2786 2787 int minSpanX = item.spanX; 2788 int minSpanY = item.spanY; 2789 if (item.minSpanX > 0 && item.minSpanY > 0) { 2790 minSpanX = item.minSpanX; 2791 minSpanY = item.minSpanY; 2792 } 2793 2794 int[] reorderPosition = new int[2]; 2795 reorderPosition = findNearestArea((int) mDragViewVisualCenter[0], 2796 (int) mDragViewVisualCenter[1], item.spanX, item.spanY, mDragTargetLayout, 2797 reorderPosition); 2798 2799 boolean nearestDropOccupied = mDragTargetLayout.isNearestDropLocationOccupied((int) 2800 mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], item.spanX, 2801 item.spanY, child, mTargetCell); 2802 2803 if (!nearestDropOccupied) { 2804 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2805 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2806 mTargetCell[0], mTargetCell[1], item.spanX, item.spanY, false, 2807 d.dragView.getDragVisualizeOffset(), d.dragView.getDragRegion()); 2808 } else if ((mDragMode == DRAG_MODE_NONE || mDragMode == DRAG_MODE_REORDER) 2809 && !mReorderAlarm.alarmPending() && (mLastReorderX != reorderPosition[0] || 2810 mLastReorderY != reorderPosition[1])) { 2811 // Otherwise, if we aren't adding to or creating a folder and there's no pending 2812 // reorder, then we schedule a reorder 2813 ReorderAlarmListener listener = new ReorderAlarmListener(mDragViewVisualCenter, 2814 minSpanX, minSpanY, item.spanX, item.spanY, d.dragView, child); 2815 mReorderAlarm.setOnAlarmListener(listener); 2816 mReorderAlarm.setAlarm(REORDER_TIMEOUT); 2817 } 2818 2819 if (mDragMode == DRAG_MODE_CREATE_FOLDER || mDragMode == DRAG_MODE_ADD_TO_FOLDER || 2820 !nearestDropOccupied) { 2821 if (mDragTargetLayout != null) { 2822 mDragTargetLayout.revertTempState(); 2823 } 2824 } 2825 } 2826 } 2827 2828 private void manageFolderFeedback(ItemInfo info, CellLayout targetLayout, 2829 int[] targetCell, float distance, View dragOverView) { 2830 boolean userFolderPending = willCreateUserFolder(info, targetLayout, targetCell, distance, 2831 false); 2832 2833 if (mDragMode == DRAG_MODE_NONE && userFolderPending && 2834 !mFolderCreationAlarm.alarmPending()) { 2835 mFolderCreationAlarm.setOnAlarmListener(new 2836 FolderCreationAlarmListener(targetLayout, targetCell[0], targetCell[1])); 2837 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2838 return; 2839 } 2840 2841 boolean willAddToFolder = 2842 willAddToExistingUserFolder(info, targetLayout, targetCell, distance); 2843 2844 if (willAddToFolder && mDragMode == DRAG_MODE_NONE) { 2845 mDragOverFolderIcon = ((FolderIcon) dragOverView); 2846 mAddToExistingFolderOnDrop = true; 2847 mDragOverFolderIcon.onDragEnter(info); 2848 if (targetLayout != null) { 2849 targetLayout.clearDragOutlines(); 2850 } 2851 setDragMode(DRAG_MODE_ADD_TO_FOLDER); 2852 return; 2853 } 2854 2855 if (mDragMode == DRAG_MODE_ADD_TO_FOLDER && !willAddToFolder) { 2856 setDragMode(DRAG_MODE_NONE); 2857 } 2858 if (mDragMode == DRAG_MODE_CREATE_FOLDER && !userFolderPending) { 2859 setDragMode(DRAG_MODE_NONE); 2860 } 2861 2862 return; 2863 } 2864 2865 class FolderCreationAlarmListener implements OnAlarmListener { 2866 CellLayout layout; 2867 int cellX; 2868 int cellY; 2869 2870 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 2871 this.layout = layout; 2872 this.cellX = cellX; 2873 this.cellY = cellY; 2874 } 2875 2876 public void onAlarm(Alarm alarm) { 2877 if (mDragFolderRingAnimator == null) { 2878 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 2879 } 2880 mDragFolderRingAnimator.setCell(cellX, cellY); 2881 mDragFolderRingAnimator.setCellLayout(layout); 2882 mDragFolderRingAnimator.animateToAcceptState(); 2883 layout.showFolderAccept(mDragFolderRingAnimator); 2884 layout.clearDragOutlines(); 2885 setDragMode(DRAG_MODE_CREATE_FOLDER); 2886 } 2887 } 2888 2889 class ReorderAlarmListener implements OnAlarmListener { 2890 float[] dragViewCenter; 2891 int minSpanX, minSpanY, spanX, spanY; 2892 DragView dragView; 2893 View child; 2894 2895 public ReorderAlarmListener(float[] dragViewCenter, int minSpanX, int minSpanY, int spanX, 2896 int spanY, DragView dragView, View child) { 2897 this.dragViewCenter = dragViewCenter; 2898 this.minSpanX = minSpanX; 2899 this.minSpanY = minSpanY; 2900 this.spanX = spanX; 2901 this.spanY = spanY; 2902 this.child = child; 2903 this.dragView = dragView; 2904 } 2905 2906 public void onAlarm(Alarm alarm) { 2907 int[] resultSpan = new int[2]; 2908 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2909 (int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell); 2910 mLastReorderX = mTargetCell[0]; 2911 mLastReorderY = mTargetCell[1]; 2912 2913 mTargetCell = mDragTargetLayout.createArea((int) mDragViewVisualCenter[0], 2914 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2915 child, mTargetCell, resultSpan, CellLayout.MODE_DRAG_OVER); 2916 2917 if (mTargetCell[0] < 0 || mTargetCell[1] < 0) { 2918 mDragTargetLayout.revertTempState(); 2919 } else { 2920 setDragMode(DRAG_MODE_REORDER); 2921 } 2922 2923 boolean resize = resultSpan[0] != spanX || resultSpan[1] != spanY; 2924 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2925 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2926 mTargetCell[0], mTargetCell[1], resultSpan[0], resultSpan[1], resize, 2927 dragView.getDragVisualizeOffset(), dragView.getDragRegion()); 2928 } 2929 } 2930 2931 @Override 2932 public void getHitRect(Rect outRect) { 2933 // We want the workspace to have the whole area of the display (it will find the correct 2934 // cell layout to drop to in the existing drag/drop logic. 2935 outRect.set(0, 0, mDisplaySize.x, mDisplaySize.y); 2936 } 2937 2938 /** 2939 * Add the item specified by dragInfo to the given layout. 2940 * @return true if successful 2941 */ 2942 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2943 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2944 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2945 return true; 2946 } 2947 mLauncher.showOutOfSpaceMessage(mLauncher.isHotseatLayout(layout)); 2948 return false; 2949 } 2950 2951 private void onDropExternal(int[] touchXY, Object dragInfo, 2952 CellLayout cellLayout, boolean insertAtFirst) { 2953 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 2954 } 2955 2956 /** 2957 * Drop an item that didn't originate on one of the workspace screens. 2958 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2959 * come from another app altogether. 2960 * 2961 * NOTE: This can also be called when we are outside of a drag event, when we want 2962 * to add an item to one of the workspace screens. 2963 */ 2964 private void onDropExternal(final int[] touchXY, final Object dragInfo, 2965 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 2966 final Runnable exitSpringLoadedRunnable = new Runnable() { 2967 @Override 2968 public void run() { 2969 mLauncher.exitSpringLoadedDragModeDelayed(true, false, null); 2970 } 2971 }; 2972 2973 ItemInfo info = (ItemInfo) dragInfo; 2974 int spanX = info.spanX; 2975 int spanY = info.spanY; 2976 if (mDragInfo != null) { 2977 spanX = mDragInfo.spanX; 2978 spanY = mDragInfo.spanY; 2979 } 2980 2981 final long container = mLauncher.isHotseatLayout(cellLayout) ? 2982 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2983 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2984 final int screen = indexOfChild(cellLayout); 2985 if (!mLauncher.isHotseatLayout(cellLayout) && screen != mCurrentPage 2986 && mState != State.SPRING_LOADED) { 2987 snapToPage(screen); 2988 } 2989 2990 if (info instanceof PendingAddItemInfo) { 2991 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 2992 2993 boolean findNearestVacantCell = true; 2994 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 2995 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 2996 cellLayout, mTargetCell); 2997 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2998 mDragViewVisualCenter[1], mTargetCell); 2999 if (willCreateUserFolder((ItemInfo) d.dragInfo, cellLayout, mTargetCell, 3000 distance, true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 3001 cellLayout, mTargetCell, distance)) { 3002 findNearestVacantCell = false; 3003 } 3004 } 3005 3006 final ItemInfo item = (ItemInfo) d.dragInfo; 3007 if (findNearestVacantCell) { 3008 int minSpanX = item.spanX; 3009 int minSpanY = item.spanY; 3010 if (item.minSpanX > 0 && item.minSpanY > 0) { 3011 minSpanX = item.minSpanX; 3012 minSpanY = item.minSpanY; 3013 } 3014 int[] resultSpan = new int[2]; 3015 mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], 3016 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, info.spanX, info.spanY, 3017 null, mTargetCell, resultSpan, CellLayout.MODE_ON_DROP_EXTERNAL); 3018 item.spanX = resultSpan[0]; 3019 item.spanY = resultSpan[1]; 3020 } 3021 3022 Runnable onAnimationCompleteRunnable = new Runnable() { 3023 @Override 3024 public void run() { 3025 // When dragging and dropping from customization tray, we deal with creating 3026 // widgets/shortcuts/folders in a slightly different way 3027 switch (pendingInfo.itemType) { 3028 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 3029 int span[] = new int[2]; 3030 span[0] = item.spanX; 3031 span[1] = item.spanY; 3032 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, 3033 container, screen, mTargetCell, span, null); 3034 break; 3035 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3036 mLauncher.processShortcutFromDrop(pendingInfo.componentName, 3037 container, screen, mTargetCell, null); 3038 break; 3039 default: 3040 throw new IllegalStateException("Unknown item type: " + 3041 pendingInfo.itemType); 3042 } 3043 } 3044 }; 3045 View finalView = pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET 3046 ? ((PendingAddWidgetInfo) pendingInfo).boundWidget : null; 3047 int animationStyle = ANIMATE_INTO_POSITION_AND_DISAPPEAR; 3048 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && 3049 ((PendingAddWidgetInfo) pendingInfo).info.configure != null) { 3050 animationStyle = ANIMATE_INTO_POSITION_AND_REMAIN; 3051 } 3052 animateWidgetDrop(info, cellLayout, d.dragView, onAnimationCompleteRunnable, 3053 animationStyle, finalView, true); 3054 } else { 3055 // This is for other drag/drop cases, like dragging from All Apps 3056 View view = null; 3057 3058 switch (info.itemType) { 3059 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 3060 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3061 if (info.container == NO_ID && info instanceof ApplicationInfo) { 3062 // Came from all apps -- make a copy 3063 info = new ShortcutInfo((ApplicationInfo) info); 3064 } 3065 view = mLauncher.createShortcut(R.layout.application, cellLayout, 3066 (ShortcutInfo) info); 3067 break; 3068 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 3069 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 3070 (FolderInfo) info, mIconCache); 3071 break; 3072 default: 3073 throw new IllegalStateException("Unknown item type: " + info.itemType); 3074 } 3075 3076 // First we find the cell nearest to point at which the item is 3077 // dropped, without any consideration to whether there is an item there. 3078 if (touchXY != null) { 3079 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3080 cellLayout, mTargetCell); 3081 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3082 mDragViewVisualCenter[1], mTargetCell); 3083 d.postAnimationRunnable = exitSpringLoadedRunnable; 3084 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, distance, 3085 true, d.dragView, d.postAnimationRunnable)) { 3086 return; 3087 } 3088 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, distance, d, 3089 true)) { 3090 return; 3091 } 3092 } 3093 3094 if (touchXY != null) { 3095 // when dragging and dropping, just find the closest free spot 3096 mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], 3097 (int) mDragViewVisualCenter[1], 1, 1, 1, 1, 3098 null, mTargetCell, null, CellLayout.MODE_ON_DROP_EXTERNAL); 3099 } else { 3100 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3101 } 3102 addInScreen(view, container, screen, mTargetCell[0], mTargetCell[1], info.spanX, 3103 info.spanY, insertAtFirst); 3104 cellLayout.onDropChild(view); 3105 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 3106 cellLayout.getShortcutsAndWidgets().measureChild(view); 3107 3108 3109 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, 3110 lp.cellX, lp.cellY); 3111 3112 if (d.dragView != null) { 3113 // We wrap the animation call in the temporary set and reset of the current 3114 // cellLayout to its final transform -- this means we animate the drag view to 3115 // the correct final location. 3116 setFinalTransitionTransform(cellLayout); 3117 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 3118 exitSpringLoadedRunnable); 3119 resetTransitionTransform(cellLayout); 3120 } 3121 } 3122 } 3123 3124 public Bitmap createWidgetBitmap(ItemInfo widgetInfo, View layout) { 3125 int[] unScaledSize = mLauncher.getWorkspace().estimateItemSize(widgetInfo.spanX, 3126 widgetInfo.spanY, widgetInfo, false); 3127 int visibility = layout.getVisibility(); 3128 layout.setVisibility(VISIBLE); 3129 3130 int width = MeasureSpec.makeMeasureSpec(unScaledSize[0], MeasureSpec.EXACTLY); 3131 int height = MeasureSpec.makeMeasureSpec(unScaledSize[1], MeasureSpec.EXACTLY); 3132 Bitmap b = Bitmap.createBitmap(unScaledSize[0], unScaledSize[1], 3133 Bitmap.Config.ARGB_8888); 3134 Canvas c = new Canvas(b); 3135 3136 layout.measure(width, height); 3137 layout.layout(0, 0, unScaledSize[0], unScaledSize[1]); 3138 layout.draw(c); 3139 c.setBitmap(null); 3140 layout.setVisibility(visibility); 3141 return b; 3142 } 3143 3144 private void getFinalPositionForDropAnimation(int[] loc, float[] scaleXY, 3145 DragView dragView, CellLayout layout, ItemInfo info, int[] targetCell, View finalView, 3146 boolean external) { 3147 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 3148 // location and size on the home screen. 3149 int spanX = info.spanX; 3150 int spanY = info.spanY; 3151 3152 Rect r = estimateItemPosition(layout, info, targetCell[0], targetCell[1], spanX, spanY); 3153 loc[0] = r.left; 3154 loc[1] = r.top; 3155 3156 setFinalTransitionTransform(layout); 3157 float cellLayoutScale = 3158 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(layout, loc); 3159 resetTransitionTransform(layout); 3160 float dragViewScaleX = (1.0f * r.width()) / dragView.getMeasuredWidth(); 3161 float dragViewScaleY = (1.0f * r.height()) / dragView.getMeasuredHeight(); 3162 3163 // The animation will scale the dragView about its center, so we need to center about 3164 // the final location. 3165 loc[0] -= (dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 3166 loc[1] -= (dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 3167 3168 scaleXY[0] = dragViewScaleX * cellLayoutScale; 3169 scaleXY[1] = dragViewScaleY * cellLayoutScale; 3170 } 3171 3172 public void animateWidgetDrop(ItemInfo info, CellLayout cellLayout, DragView dragView, 3173 final Runnable onCompleteRunnable, int animationType, final View finalView, 3174 boolean external) { 3175 Rect from = new Rect(); 3176 mLauncher.getDragLayer().getViewRectRelativeToSelf(dragView, from); 3177 3178 int[] finalPos = new int[2]; 3179 float scaleXY[] = new float[2]; 3180 getFinalPositionForDropAnimation(finalPos, scaleXY, dragView, cellLayout, info, mTargetCell, 3181 finalView, external); 3182 3183 Resources res = mLauncher.getResources(); 3184 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration) - 200; 3185 3186 // In the case where we've prebound the widget, we remove it from the DragLayer 3187 if (finalView instanceof AppWidgetHostView && external) { 3188 mLauncher.getDragLayer().removeView(finalView); 3189 } 3190 if ((animationType == ANIMATE_INTO_POSITION_AND_RESIZE || external) && finalView != null) { 3191 Bitmap crossFadeBitmap = createWidgetBitmap(info, finalView); 3192 dragView.setCrossFadeBitmap(crossFadeBitmap); 3193 dragView.crossFade((int) (duration * 0.8f)); 3194 } else if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && external) { 3195 scaleXY[0] = scaleXY[1] = Math.min(scaleXY[0], scaleXY[1]); 3196 } 3197 3198 DragLayer dragLayer = mLauncher.getDragLayer(); 3199 if (animationType == CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION) { 3200 mLauncher.getDragLayer().animateViewIntoPosition(dragView, finalPos, 0f, 0.1f, 0.1f, 3201 DragLayer.ANIMATION_END_DISAPPEAR, onCompleteRunnable, duration); 3202 } else { 3203 int endStyle; 3204 if (animationType == ANIMATE_INTO_POSITION_AND_REMAIN) { 3205 endStyle = DragLayer.ANIMATION_END_REMAIN_VISIBLE; 3206 } else { 3207 endStyle = DragLayer.ANIMATION_END_DISAPPEAR;; 3208 } 3209 3210 Runnable onComplete = new Runnable() { 3211 @Override 3212 public void run() { 3213 if (finalView != null) { 3214 finalView.setVisibility(VISIBLE); 3215 } 3216 if (onCompleteRunnable != null) { 3217 onCompleteRunnable.run(); 3218 } 3219 } 3220 }; 3221 dragLayer.animateViewIntoPosition(dragView, from.left, from.top, finalPos[0], 3222 finalPos[1], 1, 1, 1, scaleXY[0], scaleXY[1], onComplete, endStyle, 3223 duration, this); 3224 } 3225 } 3226 3227 public void setFinalTransitionTransform(CellLayout layout) { 3228 if (isSwitchingState()) { 3229 int index = indexOfChild(layout); 3230 mCurrentScaleX = layout.getScaleX(); 3231 mCurrentScaleY = layout.getScaleY(); 3232 mCurrentTranslationX = layout.getTranslationX(); 3233 mCurrentTranslationY = layout.getTranslationY(); 3234 mCurrentRotationY = layout.getRotationY(); 3235 layout.setScaleX(mNewScaleXs[index]); 3236 layout.setScaleY(mNewScaleYs[index]); 3237 layout.setTranslationX(mNewTranslationXs[index]); 3238 layout.setTranslationY(mNewTranslationYs[index]); 3239 layout.setRotationY(mNewRotationYs[index]); 3240 } 3241 } 3242 public void resetTransitionTransform(CellLayout layout) { 3243 if (isSwitchingState()) { 3244 mCurrentScaleX = layout.getScaleX(); 3245 mCurrentScaleY = layout.getScaleY(); 3246 mCurrentTranslationX = layout.getTranslationX(); 3247 mCurrentTranslationY = layout.getTranslationY(); 3248 mCurrentRotationY = layout.getRotationY(); 3249 layout.setScaleX(mCurrentScaleX); 3250 layout.setScaleY(mCurrentScaleY); 3251 layout.setTranslationX(mCurrentTranslationX); 3252 layout.setTranslationY(mCurrentTranslationY); 3253 layout.setRotationY(mCurrentRotationY); 3254 } 3255 } 3256 3257 /** 3258 * Return the current {@link CellLayout}, correctly picking the destination 3259 * screen while a scroll is in progress. 3260 */ 3261 public CellLayout getCurrentDropLayout() { 3262 return (CellLayout) getChildAt(getNextPage()); 3263 } 3264 3265 /** 3266 * Return the current CellInfo describing our current drag; this method exists 3267 * so that Launcher can sync this object with the correct info when the activity is created/ 3268 * destroyed 3269 * 3270 */ 3271 public CellLayout.CellInfo getDragInfo() { 3272 return mDragInfo; 3273 } 3274 3275 /** 3276 * Calculate the nearest cell where the given object would be dropped. 3277 * 3278 * pixelX and pixelY should be in the coordinate system of layout 3279 */ 3280 private int[] findNearestArea(int pixelX, int pixelY, 3281 int spanX, int spanY, CellLayout layout, int[] recycle) { 3282 return layout.findNearestArea( 3283 pixelX, pixelY, spanX, spanY, recycle); 3284 } 3285 3286 void setup(DragController dragController) { 3287 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3288 mDragController = dragController; 3289 3290 // hardware layers on children are enabled on startup, but should be disabled until 3291 // needed 3292 updateChildrenLayersEnabled(); 3293 setWallpaperDimension(); 3294 } 3295 3296 /** 3297 * Called at the end of a drag which originated on the workspace. 3298 */ 3299 public void onDropCompleted(View target, DragObject d, boolean isFlingToDelete, 3300 boolean success) { 3301 if (success) { 3302 if (target != this) { 3303 if (mDragInfo != null) { 3304 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 3305 if (mDragInfo.cell instanceof DropTarget) { 3306 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 3307 } 3308 } 3309 } 3310 } else if (mDragInfo != null) { 3311 CellLayout cellLayout; 3312 if (mLauncher.isHotseatLayout(target)) { 3313 cellLayout = mLauncher.getHotseat().getLayout(); 3314 } else { 3315 cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3316 } 3317 cellLayout.onDropChild(mDragInfo.cell); 3318 } 3319 if (d.cancelled && mDragInfo.cell != null) { 3320 mDragInfo.cell.setVisibility(VISIBLE); 3321 } 3322 mDragOutline = null; 3323 mDragInfo = null; 3324 3325 // Hide the scrolling indicator after you pick up an item 3326 hideScrollingIndicator(false); 3327 } 3328 3329 void updateItemLocationsInDatabase(CellLayout cl) { 3330 int count = cl.getShortcutsAndWidgets().getChildCount(); 3331 3332 int screen = indexOfChild(cl); 3333 int container = Favorites.CONTAINER_DESKTOP; 3334 3335 if (mLauncher.isHotseatLayout(cl)) { 3336 screen = -1; 3337 container = Favorites.CONTAINER_HOTSEAT; 3338 } 3339 3340 for (int i = 0; i < count; i++) { 3341 View v = cl.getShortcutsAndWidgets().getChildAt(i); 3342 ItemInfo info = (ItemInfo) v.getTag(); 3343 // Null check required as the AllApps button doesn't have an item info 3344 if (info != null) { 3345 LauncherModel.modifyItemInDatabase(mLauncher, info, container, screen, info.cellX, 3346 info.cellY, info.spanX, info.spanY); 3347 } 3348 } 3349 } 3350 3351 @Override 3352 public boolean supportsFlingToDelete() { 3353 return true; 3354 } 3355 3356 @Override 3357 public void onFlingToDelete(DragObject d, int x, int y, PointF vec) { 3358 // Do nothing 3359 } 3360 3361 @Override 3362 public void onFlingToDeleteCompleted() { 3363 // Do nothing 3364 } 3365 3366 public boolean isDropEnabled() { 3367 return true; 3368 } 3369 3370 @Override 3371 protected void onRestoreInstanceState(Parcelable state) { 3372 super.onRestoreInstanceState(state); 3373 Launcher.setScreen(mCurrentPage); 3374 } 3375 3376 @Override 3377 public void scrollLeft() { 3378 if (!isSmall() && !mIsSwitchingState) { 3379 super.scrollLeft(); 3380 } 3381 Folder openFolder = getOpenFolder(); 3382 if (openFolder != null) { 3383 openFolder.completeDragExit(); 3384 } 3385 } 3386 3387 @Override 3388 public void scrollRight() { 3389 if (!isSmall() && !mIsSwitchingState) { 3390 super.scrollRight(); 3391 } 3392 Folder openFolder = getOpenFolder(); 3393 if (openFolder != null) { 3394 openFolder.completeDragExit(); 3395 } 3396 } 3397 3398 @Override 3399 public boolean onEnterScrollArea(int x, int y, int direction) { 3400 // Ignore the scroll area if we are dragging over the hot seat 3401 boolean isPortrait = !LauncherApplication.isScreenLandscape(getContext()); 3402 if (mLauncher.getHotseat() != null && isPortrait) { 3403 Rect r = new Rect(); 3404 mLauncher.getHotseat().getHitRect(r); 3405 if (r.contains(x, y)) { 3406 return false; 3407 } 3408 } 3409 3410 boolean result = false; 3411 if (!isSmall() && !mIsSwitchingState) { 3412 mInScrollArea = true; 3413 3414 final int page = getNextPage() + 3415 (direction == DragController.SCROLL_LEFT ? -1 : 1); 3416 3417 // We always want to exit the current layout to ensure parity of enter / exit 3418 setCurrentDropLayout(null); 3419 3420 if (0 <= page && page < getChildCount()) { 3421 CellLayout layout = (CellLayout) getChildAt(page); 3422 setCurrentDragOverlappingLayout(layout); 3423 3424 // Workspace is responsible for drawing the edge glow on adjacent pages, 3425 // so we need to redraw the workspace when this may have changed. 3426 invalidate(); 3427 result = true; 3428 } 3429 } 3430 return result; 3431 } 3432 3433 @Override 3434 public boolean onExitScrollArea() { 3435 boolean result = false; 3436 if (mInScrollArea) { 3437 invalidate(); 3438 CellLayout layout = getCurrentDropLayout(); 3439 setCurrentDropLayout(layout); 3440 setCurrentDragOverlappingLayout(layout); 3441 3442 result = true; 3443 mInScrollArea = false; 3444 } 3445 return result; 3446 } 3447 3448 private void onResetScrollArea() { 3449 setCurrentDragOverlappingLayout(null); 3450 mInScrollArea = false; 3451 } 3452 3453 /** 3454 * Returns a specific CellLayout 3455 */ 3456 CellLayout getParentCellLayoutForView(View v) { 3457 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3458 for (CellLayout layout : layouts) { 3459 if (layout.getShortcutsAndWidgets().indexOfChild(v) > -1) { 3460 return layout; 3461 } 3462 } 3463 return null; 3464 } 3465 3466 /** 3467 * Returns a list of all the CellLayouts in the workspace. 3468 */ 3469 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3470 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3471 int screenCount = getChildCount(); 3472 for (int screen = 0; screen < screenCount; screen++) { 3473 layouts.add(((CellLayout) getChildAt(screen))); 3474 } 3475 if (mLauncher.getHotseat() != null) { 3476 layouts.add(mLauncher.getHotseat().getLayout()); 3477 } 3478 return layouts; 3479 } 3480 3481 /** 3482 * We should only use this to search for specific children. Do not use this method to modify 3483 * ShortcutsAndWidgetsContainer directly. Includes ShortcutAndWidgetContainers from 3484 * the hotseat and workspace pages 3485 */ 3486 ArrayList<ShortcutAndWidgetContainer> getAllShortcutAndWidgetContainers() { 3487 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3488 new ArrayList<ShortcutAndWidgetContainer>(); 3489 int screenCount = getChildCount(); 3490 for (int screen = 0; screen < screenCount; screen++) { 3491 childrenLayouts.add(((CellLayout) getChildAt(screen)).getShortcutsAndWidgets()); 3492 } 3493 if (mLauncher.getHotseat() != null) { 3494 childrenLayouts.add(mLauncher.getHotseat().getLayout().getShortcutsAndWidgets()); 3495 } 3496 return childrenLayouts; 3497 } 3498 3499 public Folder getFolderForTag(Object tag) { 3500 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3501 getAllShortcutAndWidgetContainers(); 3502 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3503 int count = layout.getChildCount(); 3504 for (int i = 0; i < count; i++) { 3505 View child = layout.getChildAt(i); 3506 if (child instanceof Folder) { 3507 Folder f = (Folder) child; 3508 if (f.getInfo() == tag && f.getInfo().opened) { 3509 return f; 3510 } 3511 } 3512 } 3513 } 3514 return null; 3515 } 3516 3517 public View getViewForTag(Object tag) { 3518 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3519 getAllShortcutAndWidgetContainers(); 3520 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3521 int count = layout.getChildCount(); 3522 for (int i = 0; i < count; i++) { 3523 View child = layout.getChildAt(i); 3524 if (child.getTag() == tag) { 3525 return child; 3526 } 3527 } 3528 } 3529 return null; 3530 } 3531 3532 void clearDropTargets() { 3533 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3534 getAllShortcutAndWidgetContainers(); 3535 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3536 int childCount = layout.getChildCount(); 3537 for (int j = 0; j < childCount; j++) { 3538 View v = layout.getChildAt(j); 3539 if (v instanceof DropTarget) { 3540 mDragController.removeDropTarget((DropTarget) v); 3541 } 3542 } 3543 } 3544 } 3545 3546 void removeItems(final ArrayList<ApplicationInfo> apps) { 3547 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3548 3549 final HashSet<String> packageNames = new HashSet<String>(); 3550 final int appCount = apps.size(); 3551 for (int i = 0; i < appCount; i++) { 3552 packageNames.add(apps.get(i).componentName.getPackageName()); 3553 } 3554 3555 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3556 for (final CellLayout layoutParent: cellLayouts) { 3557 final ViewGroup layout = layoutParent.getShortcutsAndWidgets(); 3558 3559 // Avoid ANRs by treating each screen separately 3560 post(new Runnable() { 3561 public void run() { 3562 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3563 childrenToRemove.clear(); 3564 3565 int childCount = layout.getChildCount(); 3566 for (int j = 0; j < childCount; j++) { 3567 final View view = layout.getChildAt(j); 3568 Object tag = view.getTag(); 3569 3570 if (tag instanceof ShortcutInfo) { 3571 final ShortcutInfo info = (ShortcutInfo) tag; 3572 final Intent intent = info.intent; 3573 final ComponentName name = intent.getComponent(); 3574 3575 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3576 for (String packageName: packageNames) { 3577 if (packageName.equals(name.getPackageName())) { 3578 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3579 childrenToRemove.add(view); 3580 } 3581 } 3582 } 3583 } else if (tag instanceof FolderInfo) { 3584 final FolderInfo info = (FolderInfo) tag; 3585 final ArrayList<ShortcutInfo> contents = info.contents; 3586 final int contentsCount = contents.size(); 3587 final ArrayList<ShortcutInfo> appsToRemoveFromFolder = 3588 new ArrayList<ShortcutInfo>(); 3589 3590 for (int k = 0; k < contentsCount; k++) { 3591 final ShortcutInfo appInfo = contents.get(k); 3592 final Intent intent = appInfo.intent; 3593 final ComponentName name = intent.getComponent(); 3594 3595 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3596 for (String packageName: packageNames) { 3597 if (packageName.equals(name.getPackageName())) { 3598 appsToRemoveFromFolder.add(appInfo); 3599 } 3600 } 3601 } 3602 } 3603 for (ShortcutInfo item: appsToRemoveFromFolder) { 3604 info.remove(item); 3605 LauncherModel.deleteItemFromDatabase(mLauncher, item); 3606 } 3607 } else if (tag instanceof LauncherAppWidgetInfo) { 3608 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3609 final AppWidgetProviderInfo provider = 3610 widgets.getAppWidgetInfo(info.appWidgetId); 3611 if (provider != null) { 3612 for (String packageName: packageNames) { 3613 if (packageName.equals(provider.provider.getPackageName())) { 3614 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3615 childrenToRemove.add(view); 3616 } 3617 } 3618 } 3619 } 3620 } 3621 3622 childCount = childrenToRemove.size(); 3623 for (int j = 0; j < childCount; j++) { 3624 View child = childrenToRemove.get(j); 3625 // Note: We can not remove the view directly from CellLayoutChildren as this 3626 // does not re-mark the spaces as unoccupied. 3627 layoutParent.removeViewInLayout(child); 3628 if (child instanceof DropTarget) { 3629 mDragController.removeDropTarget((DropTarget)child); 3630 } 3631 } 3632 3633 if (childCount > 0) { 3634 layout.requestLayout(); 3635 layout.invalidate(); 3636 } 3637 } 3638 }); 3639 } 3640 } 3641 3642 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3643 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = getAllShortcutAndWidgetContainers(); 3644 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3645 int childCount = layout.getChildCount(); 3646 for (int j = 0; j < childCount; j++) { 3647 final View view = layout.getChildAt(j); 3648 Object tag = view.getTag(); 3649 if (tag instanceof ShortcutInfo) { 3650 ShortcutInfo info = (ShortcutInfo) tag; 3651 // We need to check for ACTION_MAIN otherwise getComponent() might 3652 // return null for some shortcuts (for instance, for shortcuts to 3653 // web pages.) 3654 final Intent intent = info.intent; 3655 final ComponentName name = intent.getComponent(); 3656 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3657 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3658 final int appCount = apps.size(); 3659 for (int k = 0; k < appCount; k++) { 3660 ApplicationInfo app = apps.get(k); 3661 if (app.componentName.equals(name)) { 3662 BubbleTextView shortcut = (BubbleTextView) view; 3663 info.updateIcon(mIconCache); 3664 info.title = app.title.toString(); 3665 shortcut.applyFromShortcutInfo(info, mIconCache); 3666 } 3667 } 3668 } 3669 } 3670 } 3671 } 3672 } 3673 3674 void moveToDefaultScreen(boolean animate) { 3675 if (!isSmall()) { 3676 if (animate) { 3677 snapToPage(mDefaultPage); 3678 } else { 3679 setCurrentPage(mDefaultPage); 3680 } 3681 } 3682 getChildAt(mDefaultPage).requestFocus(); 3683 } 3684 3685 @Override 3686 public void syncPages() { 3687 } 3688 3689 @Override 3690 public void syncPageItems(int page, boolean immediate) { 3691 } 3692 3693 @Override 3694 protected String getCurrentPageDescription() { 3695 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 3696 return String.format(getContext().getString(R.string.workspace_scroll_format), 3697 page + 1, getChildCount()); 3698 } 3699 3700 public void getLocationInDragLayer(int[] loc) { 3701 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 3702 } 3703 3704 void setFadeForOverScroll(float fade) { 3705 if (!isScrollingIndicatorEnabled()) return; 3706 3707 mOverscrollFade = fade; 3708 float reducedFade = 0.5f + 0.5f * (1 - fade); 3709 final ViewGroup parent = (ViewGroup) getParent(); 3710 final ImageView qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3711 final ImageView dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3712 final View scrollIndicator = getScrollingIndicator(); 3713 3714 cancelScrollingIndicatorAnimations(); 3715 if (qsbDivider != null) qsbDivider.setAlpha(reducedFade); 3716 if (dockDivider != null) dockDivider.setAlpha(reducedFade); 3717 scrollIndicator.setAlpha(1 - fade); 3718 } 3719} 3720