Workspace.java revision 7d2d6b5f0972354df05249082d4179dcdc442723
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 static Rect mLandscapeCellLayoutMetrics = null; 126 static Rect mPortraitCellLayoutMetrics = null; 127 128 /** 129 * The CellLayout that is currently being dragged over 130 */ 131 private CellLayout mDragTargetLayout = null; 132 /** 133 * The CellLayout that we will show as glowing 134 */ 135 private CellLayout mDragOverlappingLayout = null; 136 137 /** 138 * The CellLayout which will be dropped to 139 */ 140 private CellLayout mDropToLayout = null; 141 142 private Launcher mLauncher; 143 private IconCache mIconCache; 144 private DragController mDragController; 145 146 // These are temporary variables to prevent having to allocate a new object just to 147 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 148 private int[] mTempCell = new int[2]; 149 private int[] mTempEstimate = new int[2]; 150 private float[] mDragViewVisualCenter = new float[2]; 151 private float[] mTempDragCoordinates = new float[2]; 152 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 153 private float[] mTempDragBottomRightCoordinates = new float[2]; 154 private Matrix mTempInverseMatrix = new Matrix(); 155 156 private SpringLoadedDragController mSpringLoadedDragController; 157 private float mSpringLoadedShrinkFactor; 158 159 private static final int DEFAULT_CELL_COUNT_X = 4; 160 private static final int DEFAULT_CELL_COUNT_Y = 4; 161 162 // State variable that indicates whether the pages are small (ie when you're 163 // in all apps or customize mode) 164 165 enum State { NORMAL, SPRING_LOADED, SMALL }; 166 private State mState = State.NORMAL; 167 private boolean mIsSwitchingState = false; 168 169 boolean mAnimatingViewIntoPlace = false; 170 boolean mIsDragOccuring = false; 171 boolean mChildrenLayersEnabled = true; 172 173 /** Is the user is dragging an item near the edge of a page? */ 174 private boolean mInScrollArea = false; 175 176 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 177 private Bitmap mDragOutline = null; 178 private final Rect mTempRect = new Rect(); 179 private final int[] mTempXY = new int[2]; 180 private float mOverscrollFade = 0; 181 private boolean mOverscrollTransformsSet; 182 public static final int DRAG_BITMAP_PADDING = 2; 183 184 // Camera and Matrix used to determine the final position of a neighboring CellLayout 185 private final Matrix mMatrix = new Matrix(); 186 private final Camera mCamera = new Camera(); 187 private final float mTempFloat2[] = new float[2]; 188 189 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 190 int mWallpaperWidth; 191 int mWallpaperHeight; 192 WallpaperOffsetInterpolator mWallpaperOffset; 193 boolean mUpdateWallpaperOffsetImmediately = false; 194 private Runnable mDelayedResizeRunnable; 195 private Runnable mDelayedSnapToPageRunnable; 196 private Point mDisplaySize = new Point(); 197 private boolean mIsStaticWallpaper; 198 private int mWallpaperTravelWidth; 199 200 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 201 private static final int FOLDER_CREATION_TIMEOUT = 0; 202 private static final int REORDER_TIMEOUT = 250; 203 private final Alarm mFolderCreationAlarm = new Alarm(); 204 private final Alarm mReorderAlarm = new Alarm(); 205 private FolderRingAnimator mDragFolderRingAnimator = null; 206 private FolderIcon mDragOverFolderIcon = null; 207 private boolean mCreateUserFolderOnDrop = false; 208 private boolean mAddToExistingFolderOnDrop = false; 209 private DropTarget.DragEnforcer mDragEnforcer; 210 211 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 212 private float mXDown; 213 private float mYDown; 214 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 215 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 216 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 217 218 // Relating to the animation of items being dropped externally 219 public static final int ANIMATE_INTO_POSITION_AND_DISAPPEAR = 0; 220 public static final int ANIMATE_INTO_POSITION_AND_REMAIN = 1; 221 public static final int ANIMATE_INTO_POSITION_AND_RESIZE = 2; 222 public static final int COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION = 3; 223 public static final int CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION = 4; 224 225 // Related to dragging, folder creation and reordering 226 private static final int DRAG_MODE_NONE = 0; 227 private static final int DRAG_MODE_CREATE_FOLDER = 1; 228 private static final int DRAG_MODE_ADD_TO_FOLDER = 2; 229 private static final int DRAG_MODE_REORDER = 3; 230 private int mDragMode = DRAG_MODE_NONE; 231 private int mLastReorderX = -1; 232 private int mLastReorderY = -1; 233 234 // These variables are used for storing the initial and final values during workspace animations 235 private int mSavedScrollX; 236 private float mSavedRotationY; 237 private float mSavedTranslationX; 238 private float mCurrentScaleX; 239 private float mCurrentScaleY; 240 private float mCurrentRotationY; 241 private float mCurrentTranslationX; 242 private float mCurrentTranslationY; 243 private float[] mOldTranslationXs; 244 private float[] mOldTranslationYs; 245 private float[] mOldScaleXs; 246 private float[] mOldScaleYs; 247 private float[] mOldBackgroundAlphas; 248 private float[] mOldBackgroundAlphaMultipliers; 249 private float[] mOldAlphas; 250 private float[] mOldRotationYs; 251 private float[] mNewTranslationXs; 252 private float[] mNewTranslationYs; 253 private float[] mNewScaleXs; 254 private float[] mNewScaleYs; 255 private float[] mNewBackgroundAlphas; 256 private float[] mNewBackgroundAlphaMultipliers; 257 private float[] mNewAlphas; 258 private float[] mNewRotationYs; 259 private float mTransitionProgress; 260 261 /** 262 * Used to inflate the Workspace from XML. 263 * 264 * @param context The application's context. 265 * @param attrs The attributes set containing the Workspace's customization values. 266 */ 267 public Workspace(Context context, AttributeSet attrs) { 268 this(context, attrs, 0); 269 } 270 271 /** 272 * Used to inflate the Workspace from XML. 273 * 274 * @param context The application's context. 275 * @param attrs The attributes set containing the Workspace's customization values. 276 * @param defStyle Unused. 277 */ 278 public Workspace(Context context, AttributeSet attrs, int defStyle) { 279 super(context, attrs, defStyle); 280 mContentIsRefreshable = false; 281 282 mDragEnforcer = new DropTarget.DragEnforcer(context); 283 // With workspace, data is available straight from the get-go 284 setDataIsReady(); 285 286 final Resources res = getResources(); 287 mFadeInAdjacentScreens = res.getBoolean(R.bool.config_workspaceFadeAdjacentScreens); 288 mWallpaperManager = WallpaperManager.getInstance(context); 289 290 int cellCountX = DEFAULT_CELL_COUNT_X; 291 int cellCountY = DEFAULT_CELL_COUNT_Y; 292 293 TypedArray a = context.obtainStyledAttributes(attrs, 294 R.styleable.Workspace, defStyle, 0); 295 296 if (LauncherApplication.isScreenLarge()) { 297 // Determine number of rows/columns dynamically 298 // TODO: This code currently fails on tablets with an aspect ratio < 1.3. 299 // Around that ratio we should make cells the same size in portrait and 300 // landscape 301 TypedArray actionBarSizeTypedArray = 302 context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize }); 303 DisplayMetrics displayMetrics = res.getDisplayMetrics(); 304 final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); 305 final float systemBarHeight = res.getDimension(R.dimen.status_bar_height); 306 final float smallestScreenDim = res.getConfiguration().smallestScreenWidthDp * 307 displayMetrics.density; 308 309 cellCountX = 1; 310 while (CellLayout.widthInPortrait(res, cellCountX + 1) <= smallestScreenDim) { 311 cellCountX++; 312 } 313 314 cellCountY = 1; 315 while (actionBarHeight + CellLayout.heightInLandscape(res, cellCountY + 1) 316 <= smallestScreenDim - systemBarHeight) { 317 cellCountY++; 318 } 319 } 320 321 mSpringLoadedShrinkFactor = 322 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 323 324 // if the value is manually specified, use that instead 325 cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX); 326 cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY); 327 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 328 a.recycle(); 329 330 setOnHierarchyChangeListener(this); 331 332 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 333 setHapticFeedbackEnabled(false); 334 335 mLauncher = (Launcher) context; 336 initWorkspace(); 337 338 // Disable multitouch across the workspace/all apps/customize tray 339 setMotionEventSplittingEnabled(true); 340 } 341 342 // estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each 343 // dimension if unsuccessful 344 public int[] estimateItemSize(int hSpan, int vSpan, 345 ItemInfo itemInfo, boolean springLoaded) { 346 int[] size = new int[2]; 347 if (getChildCount() > 0) { 348 CellLayout cl = (CellLayout) mLauncher.getWorkspace().getChildAt(0); 349 Rect r = estimateItemPosition(cl, itemInfo, 0, 0, hSpan, vSpan); 350 size[0] = r.width(); 351 size[1] = r.height(); 352 if (springLoaded) { 353 size[0] *= mSpringLoadedShrinkFactor; 354 size[1] *= mSpringLoadedShrinkFactor; 355 } 356 return size; 357 } else { 358 size[0] = Integer.MAX_VALUE; 359 size[1] = Integer.MAX_VALUE; 360 return size; 361 } 362 } 363 public Rect estimateItemPosition(CellLayout cl, ItemInfo pendingInfo, 364 int hCell, int vCell, int hSpan, int vSpan) { 365 Rect r = new Rect(); 366 cl.cellToRect(hCell, vCell, hSpan, vSpan, r); 367 return r; 368 } 369 370 public void buildPageHardwareLayers() { 371 if (getWindowToken() != null) { 372 final int childCount = getChildCount(); 373 for (int i = 0; i < childCount; i++) { 374 CellLayout cl = (CellLayout) getChildAt(i); 375 cl.getShortcutsAndWidgets().buildLayer(); 376 } 377 } 378 } 379 380 public void onDragStart(DragSource source, Object info, int dragAction) { 381 mIsDragOccuring = true; 382 updateChildrenLayersEnabled(); 383 mLauncher.lockScreenOrientation(); 384 } 385 386 public void onDragEnd() { 387 mIsDragOccuring = false; 388 updateChildrenLayersEnabled(); 389 mLauncher.unlockScreenOrientation(); 390 } 391 392 /** 393 * Initializes various states for this workspace. 394 */ 395 protected void initWorkspace() { 396 Context context = getContext(); 397 mCurrentPage = mDefaultPage; 398 Launcher.setScreen(mCurrentPage); 399 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 400 mIconCache = app.getIconCache(); 401 setWillNotDraw(false); 402 setChildrenDrawnWithCacheEnabled(true); 403 404 final Resources res = getResources(); 405 try { 406 mBackground = res.getDrawable(R.drawable.apps_customize_bg); 407 } catch (Resources.NotFoundException e) { 408 // In this case, we will skip drawing background protection 409 } 410 411 mWallpaperOffset = new WallpaperOffsetInterpolator(); 412 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 413 display.getSize(mDisplaySize); 414 mWallpaperTravelWidth = (int) (mDisplaySize.x * 415 wallpaperTravelToScreenWidthRatio(mDisplaySize.x, mDisplaySize.y)); 416 417 mMaxDistanceForFolderCreation = (0.6f * res.getDimensionPixelSize(R.dimen.app_icon_size)); 418 mFlingThresholdVelocity = (int) (FLING_THRESHOLD_VELOCITY * mDensity); 419 } 420 421 @Override 422 protected int getScrollMode() { 423 return SmoothPagedView.X_LARGE_MODE; 424 } 425 426 @Override 427 public void onChildViewAdded(View parent, View child) { 428 if (!(child instanceof CellLayout)) { 429 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 430 } 431 CellLayout cl = ((CellLayout) child); 432 cl.setOnInterceptTouchListener(this); 433 cl.setClickable(true); 434 cl.enableHardwareLayers(); 435 } 436 437 @Override 438 public void onChildViewRemoved(View parent, View child) { 439 } 440 441 /** 442 * @return The open folder on the current screen, or null if there is none 443 */ 444 Folder getOpenFolder() { 445 DragLayer dragLayer = mLauncher.getDragLayer(); 446 int count = dragLayer.getChildCount(); 447 for (int i = 0; i < count; i++) { 448 View child = dragLayer.getChildAt(i); 449 if (child instanceof Folder) { 450 Folder folder = (Folder) child; 451 if (folder.getInfo().opened) 452 return folder; 453 } 454 } 455 return null; 456 } 457 458 boolean isTouchActive() { 459 return mTouchState != TOUCH_STATE_REST; 460 } 461 462 /** 463 * Adds the specified child in the specified screen. The position and dimension of 464 * the child are defined by x, y, spanX and spanY. 465 * 466 * @param child The child to add in one of the workspace's screens. 467 * @param screen The screen in which to add the child. 468 * @param x The X position of the child in the screen's grid. 469 * @param y The Y position of the child in the screen's grid. 470 * @param spanX The number of cells spanned horizontally by the child. 471 * @param spanY The number of cells spanned vertically by the child. 472 */ 473 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY) { 474 addInScreen(child, container, screen, x, y, spanX, spanY, false); 475 } 476 477 /** 478 * Adds the specified child in the specified screen. The position and dimension of 479 * the child are defined by x, y, spanX and spanY. 480 * 481 * @param child The child to add in one of the workspace's screens. 482 * @param screen The screen in which to add the child. 483 * @param x The X position of the child in the screen's grid. 484 * @param y The Y position of the child in the screen's grid. 485 * @param spanX The number of cells spanned horizontally by the child. 486 * @param spanY The number of cells spanned vertically by the child. 487 * @param insert When true, the child is inserted at the beginning of the children list. 488 */ 489 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY, 490 boolean insert) { 491 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 492 if (screen < 0 || screen >= getChildCount()) { 493 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 494 + " (was " + screen + "); skipping child"); 495 return; 496 } 497 } 498 499 final CellLayout layout; 500 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 501 layout = mLauncher.getHotseat().getLayout(); 502 child.setOnKeyListener(null); 503 504 // Hide folder title in the hotseat 505 if (child instanceof FolderIcon) { 506 ((FolderIcon) child).setTextVisible(false); 507 } 508 509 if (screen < 0) { 510 screen = mLauncher.getHotseat().getOrderInHotseat(x, y); 511 } else { 512 // Note: We do this to ensure that the hotseat is always laid out in the orientation 513 // of the hotseat in order regardless of which orientation they were added 514 x = mLauncher.getHotseat().getCellXFromOrder(screen); 515 y = mLauncher.getHotseat().getCellYFromOrder(screen); 516 } 517 } else { 518 // Show folder title if not in the hotseat 519 if (child instanceof FolderIcon) { 520 ((FolderIcon) child).setTextVisible(true); 521 } 522 523 layout = (CellLayout) getChildAt(screen); 524 child.setOnKeyListener(new IconKeyEventListener()); 525 } 526 527 LayoutParams genericLp = child.getLayoutParams(); 528 CellLayout.LayoutParams lp; 529 if (genericLp == null || !(genericLp instanceof CellLayout.LayoutParams)) { 530 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 531 } else { 532 lp = (CellLayout.LayoutParams) genericLp; 533 lp.cellX = x; 534 lp.cellY = y; 535 lp.cellHSpan = spanX; 536 lp.cellVSpan = spanY; 537 } 538 539 if (spanX < 0 && spanY < 0) { 540 lp.isLockedToGrid = false; 541 } 542 543 // Get the canonical child id to uniquely represent this view in this screen 544 int childId = LauncherModel.getCellLayoutChildId(container, screen, x, y, spanX, spanY); 545 boolean markCellsAsOccupied = !(child instanceof Folder); 546 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 547 // TODO: This branch occurs when the workspace is adding views 548 // outside of the defined grid 549 // maybe we should be deleting these items from the LauncherModel? 550 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 551 } 552 553 if (!(child instanceof Folder)) { 554 child.setHapticFeedbackEnabled(false); 555 child.setOnLongClickListener(mLongClickListener); 556 } 557 if (child instanceof DropTarget) { 558 mDragController.addDropTarget((DropTarget) child); 559 } 560 } 561 562 /** 563 * Check if the point (x, y) hits a given page. 564 */ 565 private boolean hitsPage(int index, float x, float y) { 566 final View page = getChildAt(index); 567 if (page != null) { 568 float[] localXY = { x, y }; 569 mapPointFromSelfToChild(page, localXY); 570 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 571 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 572 } 573 return false; 574 } 575 576 @Override 577 protected boolean hitsPreviousPage(float x, float y) { 578 // mNextPage is set to INVALID_PAGE whenever we are stationary. 579 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 580 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 581 582 // Only allow tap to next page on large devices, where there's significant margin outside 583 // the active workspace 584 return LauncherApplication.isScreenLarge() && hitsPage(current - 1, x, y); 585 } 586 587 @Override 588 protected boolean hitsNextPage(float x, float y) { 589 // mNextPage is set to INVALID_PAGE whenever we are stationary. 590 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 591 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 592 593 // Only allow tap to next page on large devices, where there's significant margin outside 594 // the active workspace 595 return LauncherApplication.isScreenLarge() && hitsPage(current + 1, x, y); 596 } 597 598 /** 599 * Called directly from a CellLayout (not by the framework), after we've been added as a 600 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 601 * that it should intercept touch events, which is not something that is normally supported. 602 */ 603 @Override 604 public boolean onTouch(View v, MotionEvent event) { 605 return (isSmall() || !isFinishedSwitchingState()); 606 } 607 608 public boolean isSwitchingState() { 609 return mIsSwitchingState; 610 } 611 612 /** This differs from isSwitchingState in that we take into account how far the transition 613 * has completed. */ 614 public boolean isFinishedSwitchingState() { 615 return !mIsSwitchingState || (mTransitionProgress > 0.5f); 616 } 617 618 protected void onWindowVisibilityChanged (int visibility) { 619 mLauncher.onWindowVisibilityChanged(visibility); 620 } 621 622 @Override 623 public boolean dispatchUnhandledMove(View focused, int direction) { 624 if (isSmall() || !isFinishedSwitchingState()) { 625 // when the home screens are shrunken, shouldn't allow side-scrolling 626 return false; 627 } 628 return super.dispatchUnhandledMove(focused, direction); 629 } 630 631 @Override 632 public boolean onInterceptTouchEvent(MotionEvent ev) { 633 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 634 case MotionEvent.ACTION_DOWN: 635 mXDown = ev.getX(); 636 mYDown = ev.getY(); 637 break; 638 case MotionEvent.ACTION_POINTER_UP: 639 case MotionEvent.ACTION_UP: 640 if (mTouchState == TOUCH_STATE_REST) { 641 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 642 if (!currentPage.lastDownOnOccupiedCell()) { 643 onWallpaperTap(ev); 644 } 645 } 646 } 647 return super.onInterceptTouchEvent(ev); 648 } 649 650 @Override 651 protected void determineScrollingStart(MotionEvent ev) { 652 if (isSmall()) return; 653 if (!isFinishedSwitchingState()) return; 654 655 float deltaX = Math.abs(ev.getX() - mXDown); 656 float deltaY = Math.abs(ev.getY() - mYDown); 657 658 if (Float.compare(deltaX, 0f) == 0) return; 659 660 float slope = deltaY / deltaX; 661 float theta = (float) Math.atan(slope); 662 663 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 664 cancelCurrentPageLongPress(); 665 } 666 667 if (theta > MAX_SWIPE_ANGLE) { 668 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 669 return; 670 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 671 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 672 // increase the touch slop to make it harder to begin scrolling the workspace. This 673 // results in vertically scrolling widgets to more easily. The higher the angle, the 674 // more we increase touch slop. 675 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 676 float extraRatio = (float) 677 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 678 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 679 } else { 680 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 681 super.determineScrollingStart(ev); 682 } 683 } 684 685 @Override 686 protected boolean isScrollingIndicatorEnabled() { 687 return super.isScrollingIndicatorEnabled() && (mState != State.SPRING_LOADED); 688 } 689 690 protected void onPageBeginMoving() { 691 super.onPageBeginMoving(); 692 693 if (isHardwareAccelerated()) { 694 updateChildrenLayersEnabled(); 695 } else { 696 if (mNextPage != INVALID_PAGE) { 697 // we're snapping to a particular screen 698 enableChildrenCache(mCurrentPage, mNextPage); 699 } else { 700 // this is when user is actively dragging a particular screen, they might 701 // swipe it either left or right (but we won't advance by more than one screen) 702 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 703 } 704 } 705 706 // Only show page outlines as we pan if we are on large screen 707 if (LauncherApplication.isScreenLarge()) { 708 showOutlines(); 709 mIsStaticWallpaper = mWallpaperManager.getWallpaperInfo() == null; 710 } 711 712 // If we are not fading in adjacent screens, we still need to restore the alpha in case the 713 // user scrolls while we are transitioning (should not affect dispatchDraw optimizations) 714 if (!mFadeInAdjacentScreens) { 715 for (int i = 0; i < getChildCount(); ++i) { 716 ((CellLayout) getPageAt(i)).setShortcutAndWidgetAlpha(1f); 717 } 718 } 719 720 // Show the scroll indicator as you pan the page 721 showScrollingIndicator(false); 722 } 723 724 protected void onPageEndMoving() { 725 super.onPageEndMoving(); 726 727 if (isHardwareAccelerated()) { 728 updateChildrenLayersEnabled(); 729 } else { 730 clearChildrenCache(); 731 } 732 733 734 if (mDragController.isDragging()) { 735 if (isSmall()) { 736 // If we are in springloaded mode, then force an event to check if the current touch 737 // is under a new page (to scroll to) 738 mDragController.forceMoveEvent(); 739 } 740 } else { 741 // If we are not mid-dragging, hide the page outlines if we are on a large screen 742 if (LauncherApplication.isScreenLarge()) { 743 hideOutlines(); 744 } 745 746 // Hide the scroll indicator as you pan the page 747 if (!mDragController.isDragging()) { 748 hideScrollingIndicator(false); 749 } 750 } 751 mOverScrollMaxBackgroundAlpha = 0.0f; 752 mOverScrollPageIndex = -1; 753 754 if (mDelayedResizeRunnable != null) { 755 mDelayedResizeRunnable.run(); 756 mDelayedResizeRunnable = null; 757 } 758 759 if (mDelayedSnapToPageRunnable != null) { 760 mDelayedSnapToPageRunnable.run(); 761 mDelayedSnapToPageRunnable = null; 762 } 763 } 764 765 @Override 766 protected void notifyPageSwitchListener() { 767 super.notifyPageSwitchListener(); 768 Launcher.setScreen(mCurrentPage); 769 }; 770 771 // As a ratio of screen height, the total distance we want the parallax effect to span 772 // horizontally 773 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 774 float aspectRatio = width / (float) height; 775 776 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 777 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 778 // We will use these two data points to extrapolate how much the wallpaper parallax effect 779 // to span (ie travel) at any aspect ratio: 780 781 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 782 final float ASPECT_RATIO_PORTRAIT = 10/16f; 783 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 784 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 785 786 // To find out the desired width at different aspect ratios, we use the following two 787 // formulas, where the coefficient on x is the aspect ratio (width/height): 788 // (16/10)x + y = 1.5 789 // (10/16)x + y = 1.2 790 // We solve for x and y and end up with a final formula: 791 final float x = 792 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 793 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 794 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 795 return x * aspectRatio + y; 796 } 797 798 // The range of scroll values for Workspace 799 private int getScrollRange() { 800 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 801 } 802 803 protected void setWallpaperDimension() { 804 DisplayMetrics displayMetrics = new DisplayMetrics(); 805 mLauncher.getWindowManager().getDefaultDisplay().getRealMetrics(displayMetrics); 806 final int maxDim = Math.max(displayMetrics.widthPixels, displayMetrics.heightPixels); 807 final int minDim = Math.min(displayMetrics.widthPixels, displayMetrics.heightPixels); 808 809 // We need to ensure that there is enough extra space in the wallpaper for the intended 810 // parallax effects 811 if (LauncherApplication.isScreenLarge()) { 812 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 813 mWallpaperHeight = maxDim; 814 } else { 815 mWallpaperWidth = Math.max((int) (minDim * WALLPAPER_SCREENS_SPAN), maxDim); 816 mWallpaperHeight = maxDim; 817 } 818 new Thread("setWallpaperDimension") { 819 public void run() { 820 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 821 } 822 }.start(); 823 } 824 825 private float wallpaperOffsetForCurrentScroll() { 826 // Set wallpaper offset steps (1 / (number of screens - 1)) 827 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f); 828 829 // For the purposes of computing the scrollRange and overScrollOffset, we assume 830 // that mLayoutScale is 1. This means that when we're in spring-loaded mode, 831 // there's no discrepancy between the wallpaper offset for a given page. 832 float layoutScale = mLayoutScale; 833 mLayoutScale = 1f; 834 int scrollRange = getScrollRange(); 835 836 // Again, we adjust the wallpaper offset to be consistent between values of mLayoutScale 837 float adjustedScrollX = Math.max(0, Math.min(getScrollX(), mMaxScrollX)); 838 adjustedScrollX *= mWallpaperScrollRatio; 839 mLayoutScale = layoutScale; 840 841 float scrollProgress = 842 adjustedScrollX / (float) scrollRange; 843 844 if (LauncherApplication.isScreenLarge() && mIsStaticWallpaper) { 845 // The wallpaper travel width is how far, from left to right, the wallpaper will move 846 // at this orientation. On tablets in portrait mode we don't move all the way to the 847 // edges of the wallpaper, or otherwise the parallax effect would be too strong. 848 int wallpaperTravelWidth = Math.min(mWallpaperTravelWidth, mWallpaperWidth); 849 850 float offsetInDips = wallpaperTravelWidth * scrollProgress + 851 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 852 float offset = offsetInDips / (float) mWallpaperWidth; 853 return offset; 854 } else { 855 return scrollProgress; 856 } 857 } 858 859 private void syncWallpaperOffsetWithScroll() { 860 final boolean enableWallpaperEffects = isHardwareAccelerated(); 861 if (enableWallpaperEffects) { 862 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 863 } 864 } 865 866 public void updateWallpaperOffsetImmediately() { 867 mUpdateWallpaperOffsetImmediately = true; 868 } 869 870 private void updateWallpaperOffsets() { 871 boolean updateNow = false; 872 boolean keepUpdating = true; 873 if (mUpdateWallpaperOffsetImmediately) { 874 updateNow = true; 875 keepUpdating = false; 876 mWallpaperOffset.jumpToFinal(); 877 mUpdateWallpaperOffsetImmediately = false; 878 } else { 879 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 880 } 881 if (updateNow) { 882 if (mWindowToken != null) { 883 mWallpaperManager.setWallpaperOffsets(mWindowToken, 884 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 885 } 886 } 887 if (keepUpdating) { 888 invalidate(); 889 } 890 } 891 892 @Override 893 protected void updateCurrentPageScroll() { 894 super.updateCurrentPageScroll(); 895 computeWallpaperScrollRatio(mCurrentPage); 896 } 897 898 @Override 899 protected void snapToPage(int whichPage) { 900 super.snapToPage(whichPage); 901 computeWallpaperScrollRatio(whichPage); 902 } 903 904 @Override 905 protected void snapToPage(int whichPage, int duration) { 906 super.snapToPage(whichPage, duration); 907 computeWallpaperScrollRatio(whichPage); 908 } 909 910 protected void snapToPage(int whichPage, Runnable r) { 911 if (mDelayedSnapToPageRunnable != null) { 912 mDelayedSnapToPageRunnable.run(); 913 } 914 mDelayedSnapToPageRunnable = r; 915 snapToPage(whichPage, SLOW_PAGE_SNAP_ANIMATION_DURATION); 916 } 917 918 private void computeWallpaperScrollRatio(int page) { 919 // Here, we determine what the desired scroll would be with and without a layout scale, 920 // and compute a ratio between the two. This allows us to adjust the wallpaper offset 921 // as though there is no layout scale. 922 float layoutScale = mLayoutScale; 923 int scaled = getChildOffset(page) - getRelativeChildOffset(page); 924 mLayoutScale = 1.0f; 925 float unscaled = getChildOffset(page) - getRelativeChildOffset(page); 926 mLayoutScale = layoutScale; 927 if (scaled > 0) { 928 mWallpaperScrollRatio = (1.0f * unscaled) / scaled; 929 } else { 930 mWallpaperScrollRatio = 1f; 931 } 932 } 933 934 class WallpaperOffsetInterpolator { 935 float mFinalHorizontalWallpaperOffset = 0.0f; 936 float mFinalVerticalWallpaperOffset = 0.5f; 937 float mHorizontalWallpaperOffset = 0.0f; 938 float mVerticalWallpaperOffset = 0.5f; 939 long mLastWallpaperOffsetUpdateTime; 940 boolean mIsMovingFast; 941 boolean mOverrideHorizontalCatchupConstant; 942 float mHorizontalCatchupConstant = 0.35f; 943 float mVerticalCatchupConstant = 0.35f; 944 945 public WallpaperOffsetInterpolator() { 946 } 947 948 public void setOverrideHorizontalCatchupConstant(boolean override) { 949 mOverrideHorizontalCatchupConstant = override; 950 } 951 952 public void setHorizontalCatchupConstant(float f) { 953 mHorizontalCatchupConstant = f; 954 } 955 956 public void setVerticalCatchupConstant(float f) { 957 mVerticalCatchupConstant = f; 958 } 959 960 public boolean computeScrollOffset() { 961 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 962 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 963 mIsMovingFast = false; 964 return false; 965 } 966 boolean isLandscape = mDisplaySize.x > mDisplaySize.y; 967 968 long currentTime = System.currentTimeMillis(); 969 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 970 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 971 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 972 973 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 974 if (!mIsMovingFast && xdiff > 0.07) { 975 mIsMovingFast = true; 976 } 977 978 float fractionToCatchUpIn1MsHorizontal; 979 if (mOverrideHorizontalCatchupConstant) { 980 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 981 } else if (mIsMovingFast) { 982 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 983 } else { 984 // slow 985 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 986 } 987 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 988 989 fractionToCatchUpIn1MsHorizontal /= 33f; 990 fractionToCatchUpIn1MsVertical /= 33f; 991 992 final float UPDATE_THRESHOLD = 0.00001f; 993 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 994 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 995 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 996 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 997 998 // Don't have any lag between workspace and wallpaper on non-large devices 999 if (!LauncherApplication.isScreenLarge() || jumpToFinalValue) { 1000 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 1001 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 1002 } else { 1003 float percentToCatchUpVertical = 1004 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 1005 float percentToCatchUpHorizontal = 1006 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 1007 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 1008 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 1009 } 1010 1011 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 1012 return true; 1013 } 1014 1015 public float getCurrX() { 1016 return mHorizontalWallpaperOffset; 1017 } 1018 1019 public float getFinalX() { 1020 return mFinalHorizontalWallpaperOffset; 1021 } 1022 1023 public float getCurrY() { 1024 return mVerticalWallpaperOffset; 1025 } 1026 1027 public float getFinalY() { 1028 return mFinalVerticalWallpaperOffset; 1029 } 1030 1031 public void setFinalX(float x) { 1032 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 1033 } 1034 1035 public void setFinalY(float y) { 1036 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 1037 } 1038 1039 public void jumpToFinal() { 1040 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 1041 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 1042 } 1043 } 1044 1045 @Override 1046 public void computeScroll() { 1047 super.computeScroll(); 1048 syncWallpaperOffsetWithScroll(); 1049 } 1050 1051 void showOutlines() { 1052 if (!isSmall() && !mIsSwitchingState) { 1053 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1054 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1055 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 1056 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 1057 mChildrenOutlineFadeInAnimation.start(); 1058 } 1059 } 1060 1061 void hideOutlines() { 1062 if (!isSmall() && !mIsSwitchingState) { 1063 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1064 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1065 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 1066 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 1067 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 1068 mChildrenOutlineFadeOutAnimation.start(); 1069 } 1070 } 1071 1072 public void showOutlinesTemporarily() { 1073 if (!mIsPageMoving && !isTouchActive()) { 1074 snapToPage(mCurrentPage); 1075 } 1076 } 1077 1078 public void setChildrenOutlineAlpha(float alpha) { 1079 mChildrenOutlineAlpha = alpha; 1080 for (int i = 0; i < getChildCount(); i++) { 1081 CellLayout cl = (CellLayout) getChildAt(i); 1082 cl.setBackgroundAlpha(alpha); 1083 } 1084 } 1085 1086 public float getChildrenOutlineAlpha() { 1087 return mChildrenOutlineAlpha; 1088 } 1089 1090 void disableBackground() { 1091 mDrawBackground = false; 1092 } 1093 void enableBackground() { 1094 mDrawBackground = true; 1095 } 1096 1097 private void animateBackgroundGradient(float finalAlpha, boolean animated) { 1098 if (mBackground == null) return; 1099 if (mBackgroundFadeInAnimation != null) { 1100 mBackgroundFadeInAnimation.cancel(); 1101 mBackgroundFadeInAnimation = null; 1102 } 1103 if (mBackgroundFadeOutAnimation != null) { 1104 mBackgroundFadeOutAnimation.cancel(); 1105 mBackgroundFadeOutAnimation = null; 1106 } 1107 float startAlpha = getBackgroundAlpha(); 1108 if (finalAlpha != startAlpha) { 1109 if (animated) { 1110 mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(startAlpha, finalAlpha); 1111 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1112 public void onAnimationUpdate(ValueAnimator animation) { 1113 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1114 } 1115 }); 1116 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1117 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1118 mBackgroundFadeOutAnimation.start(); 1119 } else { 1120 setBackgroundAlpha(finalAlpha); 1121 } 1122 } 1123 } 1124 1125 public void setBackgroundAlpha(float alpha) { 1126 if (alpha != mBackgroundAlpha) { 1127 mBackgroundAlpha = alpha; 1128 invalidate(); 1129 } 1130 } 1131 1132 public float getBackgroundAlpha() { 1133 return mBackgroundAlpha; 1134 } 1135 1136 /** 1137 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 1138 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 1139 * as being larger. This method computes what offset the rotated view should be translated 1140 * in order to minimize this perceived gap. 1141 * @param degrees Angle of the view 1142 * @param width Width of the view 1143 * @param height Height of the view 1144 * @return Offset to be used in a View.setTranslationX() call 1145 */ 1146 private float getOffsetXForRotation(float degrees, int width, int height) { 1147 mMatrix.reset(); 1148 mCamera.save(); 1149 mCamera.rotateY(Math.abs(degrees)); 1150 mCamera.getMatrix(mMatrix); 1151 mCamera.restore(); 1152 1153 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 1154 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 1155 mTempFloat2[0] = width; 1156 mTempFloat2[1] = height; 1157 mMatrix.mapPoints(mTempFloat2); 1158 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 1159 } 1160 1161 float backgroundAlphaInterpolator(float r) { 1162 float pivotA = 0.1f; 1163 float pivotB = 0.4f; 1164 if (r < pivotA) { 1165 return 0; 1166 } else if (r > pivotB) { 1167 return 1.0f; 1168 } else { 1169 return (r - pivotA)/(pivotB - pivotA); 1170 } 1171 } 1172 1173 float overScrollBackgroundAlphaInterpolator(float r) { 1174 float threshold = 0.08f; 1175 1176 if (r > mOverScrollMaxBackgroundAlpha) { 1177 mOverScrollMaxBackgroundAlpha = r; 1178 } else if (r < mOverScrollMaxBackgroundAlpha) { 1179 r = mOverScrollMaxBackgroundAlpha; 1180 } 1181 1182 return Math.min(r / threshold, 1.0f); 1183 } 1184 1185 private void screenScrolledLargeUI(int screenCenter) { 1186 if (isSwitchingState()) return; 1187 boolean isInOverscroll = false; 1188 for (int i = 0; i < getChildCount(); i++) { 1189 CellLayout cl = (CellLayout) getChildAt(i); 1190 if (cl != null) { 1191 float scrollProgress = getScrollProgress(screenCenter, cl, i); 1192 float rotation = WORKSPACE_ROTATION * scrollProgress; 1193 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1194 1195 // If the current page (i) is being over scrolled, we use a different 1196 // set of rules for setting the background alpha multiplier. 1197 if (!isSmall()) { 1198 if ((mOverScrollX < 0 && i == 0) || (mOverScrollX > mMaxScrollX && 1199 i == getChildCount() -1)) { 1200 isInOverscroll = true; 1201 rotation *= -1; 1202 cl.setBackgroundAlphaMultiplier( 1203 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 1204 mOverScrollPageIndex = i; 1205 cl.setOverScrollAmount(Math.abs(scrollProgress), i == 0); 1206 if (!mOverscrollTransformsSet) { 1207 mOverscrollTransformsSet = true; 1208 cl.setPivotX(cl.getMeasuredWidth() * (i == 0 ? 0.75f : 0.25f)); 1209 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1210 cl.setOverscrollTransformsDirty(true); 1211 } 1212 } else if (mOverScrollPageIndex != i) { 1213 cl.setBackgroundAlphaMultiplier( 1214 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1215 } 1216 } 1217 cl.setTranslationX(translationX); 1218 cl.setRotationY(rotation); 1219 if (mFadeInAdjacentScreens && !isSmall()) { 1220 float alpha = 1 - Math.abs(scrollProgress); 1221 cl.setShortcutAndWidgetAlpha(alpha); 1222 } 1223 } 1224 } 1225 if (mOverscrollTransformsSet && !isInOverscroll) { 1226 mOverscrollTransformsSet = false; 1227 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1228 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1229 } 1230 invalidate(); 1231 } 1232 1233 private void screenScrolledStandardUI(int screenCenter) { 1234 if (mOverScrollX < 0 || mOverScrollX > mMaxScrollX) { 1235 int index = mOverScrollX < 0 ? 0 : getChildCount() - 1; 1236 CellLayout cl = (CellLayout) getChildAt(index); 1237 float scrollProgress = getScrollProgress(screenCenter, cl, index); 1238 cl.setOverScrollAmount(Math.abs(scrollProgress), index == 0); 1239 float rotation = - WORKSPACE_OVERSCROLL_ROTATION * scrollProgress; 1240 cl.setRotationY(rotation); 1241 setFadeForOverScroll(Math.abs(scrollProgress)); 1242 if (!mOverscrollTransformsSet) { 1243 mOverscrollTransformsSet = true; 1244 cl.setCameraDistance(mDensity * CAMERA_DISTANCE); 1245 cl.setPivotX(cl.getMeasuredWidth() * (index == 0 ? 0.75f : 0.25f)); 1246 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1247 cl.setOverscrollTransformsDirty(true); 1248 } 1249 } else { 1250 if (mOverscrollFade != 0) { 1251 setFadeForOverScroll(0); 1252 } 1253 if (mOverscrollTransformsSet) { 1254 mOverscrollTransformsSet = false; 1255 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1256 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1257 } 1258 } 1259 } 1260 1261 @Override 1262 protected void screenScrolled(int screenCenter) { 1263 if (LauncherApplication.isScreenLarge()) { 1264 // We don't call super.screenScrolled() here because we handle the adjacent pages alpha 1265 // ourselves (for efficiency), and there are no scrolling indicators to update. 1266 screenScrolledLargeUI(screenCenter); 1267 } else { 1268 super.screenScrolled(screenCenter); 1269 screenScrolledStandardUI(screenCenter); 1270 } 1271 } 1272 1273 @Override 1274 protected void overScroll(float amount) { 1275 if (LauncherApplication.isScreenLarge()) { 1276 dampedOverScroll(amount); 1277 } else { 1278 acceleratedOverScroll(amount); 1279 } 1280 } 1281 1282 protected void onAttachedToWindow() { 1283 super.onAttachedToWindow(); 1284 mWindowToken = getWindowToken(); 1285 computeScroll(); 1286 mDragController.setWindowToken(mWindowToken); 1287 } 1288 1289 protected void onDetachedFromWindow() { 1290 mWindowToken = null; 1291 } 1292 1293 @Override 1294 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1295 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1296 mUpdateWallpaperOffsetImmediately = true; 1297 } 1298 super.onLayout(changed, left, top, right, bottom); 1299 } 1300 1301 @Override 1302 protected void onDraw(Canvas canvas) { 1303 updateWallpaperOffsets(); 1304 1305 // Draw the background gradient if necessary 1306 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1307 int alpha = (int) (mBackgroundAlpha * 255); 1308 mBackground.setAlpha(alpha); 1309 mBackground.setBounds(getScrollX(), 0, getScrollX() + getMeasuredWidth(), 1310 getMeasuredHeight()); 1311 mBackground.draw(canvas); 1312 } 1313 1314 super.onDraw(canvas); 1315 } 1316 1317 boolean isDrawingBackgroundGradient() { 1318 return (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground); 1319 } 1320 1321 @Override 1322 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1323 if (!mLauncher.isAllAppsVisible()) { 1324 final Folder openFolder = getOpenFolder(); 1325 if (openFolder != null) { 1326 return openFolder.requestFocus(direction, previouslyFocusedRect); 1327 } else { 1328 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1329 } 1330 } 1331 return false; 1332 } 1333 1334 @Override 1335 public int getDescendantFocusability() { 1336 if (isSmall()) { 1337 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1338 } 1339 return super.getDescendantFocusability(); 1340 } 1341 1342 @Override 1343 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1344 if (!mLauncher.isAllAppsVisible()) { 1345 final Folder openFolder = getOpenFolder(); 1346 if (openFolder != null) { 1347 openFolder.addFocusables(views, direction); 1348 } else { 1349 super.addFocusables(views, direction, focusableMode); 1350 } 1351 } 1352 } 1353 1354 public boolean isSmall() { 1355 return mState == State.SMALL || mState == State.SPRING_LOADED; 1356 } 1357 1358 void enableChildrenCache(int fromPage, int toPage) { 1359 if (fromPage > toPage) { 1360 final int temp = fromPage; 1361 fromPage = toPage; 1362 toPage = temp; 1363 } 1364 1365 final int screenCount = getChildCount(); 1366 1367 fromPage = Math.max(fromPage, 0); 1368 toPage = Math.min(toPage, screenCount - 1); 1369 1370 for (int i = fromPage; i <= toPage; i++) { 1371 final CellLayout layout = (CellLayout) getChildAt(i); 1372 layout.setChildrenDrawnWithCacheEnabled(true); 1373 layout.setChildrenDrawingCacheEnabled(true); 1374 } 1375 } 1376 1377 void clearChildrenCache() { 1378 final int screenCount = getChildCount(); 1379 for (int i = 0; i < screenCount; i++) { 1380 final CellLayout layout = (CellLayout) getChildAt(i); 1381 layout.setChildrenDrawnWithCacheEnabled(false); 1382 // In software mode, we don't want the items to continue to be drawn into bitmaps 1383 if (!isHardwareAccelerated()) { 1384 layout.setChildrenDrawingCacheEnabled(false); 1385 } 1386 } 1387 } 1388 1389 private void updateChildrenLayersEnabled() { 1390 boolean small = mState == State.SMALL || mIsSwitchingState; 1391 boolean enableChildrenLayers = small || mAnimatingViewIntoPlace || isPageMoving(); 1392 1393 if (enableChildrenLayers != mChildrenLayersEnabled) { 1394 mChildrenLayersEnabled = enableChildrenLayers; 1395 for (int i = 0; i < getPageCount(); i++) { 1396 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(mChildrenLayersEnabled); 1397 } 1398 } 1399 } 1400 1401 protected void onWallpaperTap(MotionEvent ev) { 1402 final int[] position = mTempCell; 1403 getLocationOnScreen(position); 1404 1405 int pointerIndex = ev.getActionIndex(); 1406 position[0] += (int) ev.getX(pointerIndex); 1407 position[1] += (int) ev.getY(pointerIndex); 1408 1409 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1410 ev.getAction() == MotionEvent.ACTION_UP 1411 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1412 position[0], position[1], 0, null); 1413 } 1414 1415 /* 1416 * This interpolator emulates the rate at which the perceived scale of an object changes 1417 * as its distance from a camera increases. When this interpolator is applied to a scale 1418 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1419 * from the camera. 1420 */ 1421 static class ZInterpolator implements TimeInterpolator { 1422 private float focalLength; 1423 1424 public ZInterpolator(float foc) { 1425 focalLength = foc; 1426 } 1427 1428 public float getInterpolation(float input) { 1429 return (1.0f - focalLength / (focalLength + input)) / 1430 (1.0f - focalLength / (focalLength + 1.0f)); 1431 } 1432 } 1433 1434 /* 1435 * The exact reverse of ZInterpolator. 1436 */ 1437 static class InverseZInterpolator implements TimeInterpolator { 1438 private ZInterpolator zInterpolator; 1439 public InverseZInterpolator(float foc) { 1440 zInterpolator = new ZInterpolator(foc); 1441 } 1442 public float getInterpolation(float input) { 1443 return 1 - zInterpolator.getInterpolation(1 - input); 1444 } 1445 } 1446 1447 /* 1448 * ZInterpolator compounded with an ease-out. 1449 */ 1450 static class ZoomOutInterpolator implements TimeInterpolator { 1451 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(0.75f); 1452 private final ZInterpolator zInterpolator = new ZInterpolator(0.13f); 1453 1454 public float getInterpolation(float input) { 1455 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1456 } 1457 } 1458 1459 /* 1460 * InvereZInterpolator compounded with an ease-out. 1461 */ 1462 static class ZoomInInterpolator implements TimeInterpolator { 1463 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1464 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1465 1466 public float getInterpolation(float input) { 1467 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1468 } 1469 } 1470 1471 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1472 1473 /* 1474 * 1475 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1476 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1477 * 1478 * These methods mark the appropriate pages as accepting drops (which alters their visual 1479 * appearance). 1480 * 1481 */ 1482 public void onDragStartedWithItem(View v) { 1483 final Canvas canvas = new Canvas(); 1484 1485 // The outline is used to visualize where the item will land if dropped 1486 mDragOutline = createDragOutline(v, canvas, DRAG_BITMAP_PADDING); 1487 } 1488 1489 public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, Paint alphaClipPaint) { 1490 final Canvas canvas = new Canvas(); 1491 1492 int[] size = estimateItemSize(info.spanX, info.spanY, info, false); 1493 1494 // The outline is used to visualize where the item will land if dropped 1495 mDragOutline = createDragOutline(b, canvas, DRAG_BITMAP_PADDING, size[0], 1496 size[1], alphaClipPaint); 1497 } 1498 1499 public void exitWidgetResizeMode() { 1500 DragLayer dragLayer = mLauncher.getDragLayer(); 1501 dragLayer.clearAllResizeFrames(); 1502 } 1503 1504 private void initAnimationArrays() { 1505 final int childCount = getChildCount(); 1506 if (mOldTranslationXs != null) return; 1507 mOldTranslationXs = new float[childCount]; 1508 mOldTranslationYs = new float[childCount]; 1509 mOldScaleXs = new float[childCount]; 1510 mOldScaleYs = new float[childCount]; 1511 mOldBackgroundAlphas = new float[childCount]; 1512 mOldBackgroundAlphaMultipliers = new float[childCount]; 1513 mOldAlphas = new float[childCount]; 1514 mOldRotationYs = new float[childCount]; 1515 mNewTranslationXs = new float[childCount]; 1516 mNewTranslationYs = new float[childCount]; 1517 mNewScaleXs = new float[childCount]; 1518 mNewScaleYs = new float[childCount]; 1519 mNewBackgroundAlphas = new float[childCount]; 1520 mNewBackgroundAlphaMultipliers = new float[childCount]; 1521 mNewAlphas = new float[childCount]; 1522 mNewRotationYs = new float[childCount]; 1523 } 1524 1525 Animator getChangeStateAnimation(final State state, boolean animated) { 1526 return getChangeStateAnimation(state, animated, 0); 1527 } 1528 1529 Animator getChangeStateAnimation(final State state, boolean animated, int delay) { 1530 if (mState == state) { 1531 return null; 1532 } 1533 1534 // Initialize animation arrays for the first time if necessary 1535 initAnimationArrays(); 1536 1537 AnimatorSet anim = animated ? new AnimatorSet() : null; 1538 1539 // Stop any scrolling, move to the current page right away 1540 setCurrentPage(getNextPage()); 1541 1542 final State oldState = mState; 1543 final boolean oldStateIsNormal = (oldState == State.NORMAL); 1544 final boolean oldStateIsSpringLoaded = (oldState == State.SPRING_LOADED); 1545 final boolean oldStateIsSmall = (oldState == State.SMALL); 1546 mState = state; 1547 final boolean stateIsNormal = (state == State.NORMAL); 1548 final boolean stateIsSpringLoaded = (state == State.SPRING_LOADED); 1549 final boolean stateIsSmall = (state == State.SMALL); 1550 float finalScaleFactor = 1.0f; 1551 float finalBackgroundAlpha = stateIsSpringLoaded ? 1.0f : 0f; 1552 float translationX = 0; 1553 float translationY = 0; 1554 boolean zoomIn = true; 1555 1556 if (state != State.NORMAL) { 1557 finalScaleFactor = mSpringLoadedShrinkFactor - (stateIsSmall ? 0.1f : 0); 1558 if (oldStateIsNormal && stateIsSmall) { 1559 zoomIn = false; 1560 setLayoutScale(finalScaleFactor); 1561 updateChildrenLayersEnabled(); 1562 } else { 1563 finalBackgroundAlpha = 1.0f; 1564 setLayoutScale(finalScaleFactor); 1565 } 1566 } else { 1567 setLayoutScale(1.0f); 1568 } 1569 1570 final int duration = zoomIn ? 1571 getResources().getInteger(R.integer.config_workspaceUnshrinkTime) : 1572 getResources().getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1573 for (int i = 0; i < getChildCount(); i++) { 1574 final CellLayout cl = (CellLayout) getChildAt(i); 1575 float rotation = 0f; 1576 float initialAlpha = cl.getAlpha(); 1577 float finalAlphaMultiplierValue = 1f; 1578 float finalAlpha = (!mFadeInAdjacentScreens || stateIsSpringLoaded || 1579 (i == mCurrentPage)) ? 1f : 0f; 1580 1581 // Determine the pages alpha during the state transition 1582 if ((oldStateIsSmall && stateIsNormal) || 1583 (oldStateIsNormal && stateIsSmall)) { 1584 // To/from workspace - only show the current page unless the transition is not 1585 // animated and the animation end callback below doesn't run; 1586 // or, if we're in spring-loaded mode 1587 if (i == mCurrentPage || !animated || oldStateIsSpringLoaded) { 1588 finalAlpha = 1f; 1589 finalAlphaMultiplierValue = 0f; 1590 } else { 1591 initialAlpha = 0f; 1592 finalAlpha = 0f; 1593 } 1594 } 1595 1596 // Update the rotation of the screen (don't apply rotation on Phone UI) 1597 if (LauncherApplication.isScreenLarge()) { 1598 if (i < mCurrentPage) { 1599 rotation = WORKSPACE_ROTATION; 1600 } else if (i > mCurrentPage) { 1601 rotation = -WORKSPACE_ROTATION; 1602 } 1603 } 1604 1605 // If the screen is not xlarge, then don't rotate the CellLayouts 1606 // NOTE: If we don't update the side pages alpha, then we should not hide the side 1607 // pages. see unshrink(). 1608 if (LauncherApplication.isScreenLarge()) { 1609 translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1610 } 1611 1612 mOldAlphas[i] = initialAlpha; 1613 mNewAlphas[i] = finalAlpha; 1614 if (animated) { 1615 mOldTranslationXs[i] = cl.getTranslationX(); 1616 mOldTranslationYs[i] = cl.getTranslationY(); 1617 mOldScaleXs[i] = cl.getScaleX(); 1618 mOldScaleYs[i] = cl.getScaleY(); 1619 mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1620 mOldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1621 mOldRotationYs[i] = cl.getRotationY(); 1622 1623 mNewTranslationXs[i] = translationX; 1624 mNewTranslationYs[i] = translationY; 1625 mNewScaleXs[i] = finalScaleFactor; 1626 mNewScaleYs[i] = finalScaleFactor; 1627 mNewBackgroundAlphas[i] = finalBackgroundAlpha; 1628 mNewBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1629 mNewRotationYs[i] = rotation; 1630 } else { 1631 cl.setTranslationX(translationX); 1632 cl.setTranslationY(translationY); 1633 cl.setScaleX(finalScaleFactor); 1634 cl.setScaleY(finalScaleFactor); 1635 cl.setBackgroundAlpha(finalBackgroundAlpha); 1636 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1637 cl.setShortcutAndWidgetAlpha(finalAlpha); 1638 cl.setRotationY(rotation); 1639 } 1640 } 1641 1642 if (animated) { 1643 for (int index = 0; index < getChildCount(); index++) { 1644 final int i = index; 1645 final CellLayout cl = (CellLayout) getChildAt(i); 1646 if (mOldAlphas[i] == 0 && mNewAlphas[i] == 0) { 1647 cl.setTranslationX(mNewTranslationXs[i]); 1648 cl.setTranslationY(mNewTranslationYs[i]); 1649 cl.setScaleX(mNewScaleXs[i]); 1650 cl.setScaleY(mNewScaleYs[i]); 1651 cl.setBackgroundAlpha(mNewBackgroundAlphas[i]); 1652 cl.setBackgroundAlphaMultiplier(mNewBackgroundAlphaMultipliers[i]); 1653 cl.setShortcutAndWidgetAlpha(mNewAlphas[i]); 1654 cl.setRotationY(mNewRotationYs[i]); 1655 } else { 1656 LauncherViewPropertyAnimator a = new LauncherViewPropertyAnimator(cl); 1657 a.translationX(mNewTranslationXs[i]) 1658 .translationY(mNewTranslationYs[i]) 1659 .scaleX(mNewScaleXs[i]) 1660 .scaleY(mNewScaleYs[i]) 1661 .setDuration(duration) 1662 .setInterpolator(mZoomInInterpolator); 1663 anim.play(a); 1664 1665 if (mOldAlphas[i] != mNewAlphas[i]) { 1666 LauncherViewPropertyAnimator alphaAnim = 1667 new LauncherViewPropertyAnimator(cl.getShortcutsAndWidgets()); 1668 alphaAnim.alpha(mNewAlphas[i]) 1669 .setDuration(duration) 1670 .setInterpolator(mZoomInInterpolator); 1671 anim.play(alphaAnim); 1672 } 1673 if (mOldRotationYs[i] != 0 || mNewRotationYs[i] != 0) { 1674 ValueAnimator rotate = ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1675 rotate.setInterpolator(new DecelerateInterpolator(2.0f)); 1676 rotate.addUpdateListener(new LauncherAnimatorUpdateListener() { 1677 public void onAnimationUpdate(float a, float b) { 1678 cl.setRotationY(a * mOldRotationYs[i] + b * mNewRotationYs[i]); 1679 } 1680 }); 1681 anim.play(rotate); 1682 } 1683 if (mOldBackgroundAlphas[i] != 0 || 1684 mNewBackgroundAlphas[i] != 0 || 1685 mOldBackgroundAlphaMultipliers[i] != 0 || 1686 mNewBackgroundAlphaMultipliers[i] != 0) { 1687 ValueAnimator bgAnim = ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1688 bgAnim.setInterpolator(mZoomInInterpolator); 1689 bgAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1690 public void onAnimationUpdate(float a, float b) { 1691 cl.setBackgroundAlpha( 1692 a * mOldBackgroundAlphas[i] + 1693 b * mNewBackgroundAlphas[i]); 1694 cl.setBackgroundAlphaMultiplier( 1695 a * mOldBackgroundAlphaMultipliers[i] + 1696 b * mNewBackgroundAlphaMultipliers[i]); 1697 } 1698 }); 1699 anim.play(bgAnim); 1700 } 1701 } 1702 } 1703 buildPageHardwareLayers(); 1704 anim.setStartDelay(delay); 1705 } 1706 1707 if (stateIsSpringLoaded) { 1708 // Right now we're covered by Apps Customize 1709 // Show the background gradient immediately, so the gradient will 1710 // be showing once AppsCustomize disappears 1711 animateBackgroundGradient(getResources().getInteger( 1712 R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, false); 1713 } else { 1714 // Fade the background gradient away 1715 animateBackgroundGradient(0f, true); 1716 } 1717 return anim; 1718 } 1719 1720 @Override 1721 public void onLauncherTransitionPrepare(Launcher l, boolean animated, boolean toWorkspace) { 1722 mIsSwitchingState = true; 1723 cancelScrollingIndicatorAnimations(); 1724 } 1725 1726 @Override 1727 public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) { 1728 } 1729 1730 @Override 1731 public void onLauncherTransitionStep(Launcher l, float t) { 1732 mTransitionProgress = t; 1733 } 1734 1735 @Override 1736 public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) { 1737 mIsSwitchingState = false; 1738 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 1739 updateChildrenLayersEnabled(); 1740 // The code in getChangeStateAnimation to determine initialAlpha and finalAlpha will ensure 1741 // ensure that only the current page is visible during (and subsequently, after) the 1742 // transition animation. If fade adjacent pages is disabled, then re-enable the page 1743 // visibility after the transition animation. 1744 if (!mFadeInAdjacentScreens) { 1745 for (int i = 0; i < getChildCount(); i++) { 1746 final CellLayout cl = (CellLayout) getChildAt(i); 1747 cl.setShortcutAndWidgetAlpha(1f); 1748 } 1749 } 1750 } 1751 1752 @Override 1753 public View getContent() { 1754 return this; 1755 } 1756 1757 /** 1758 * Draw the View v into the given Canvas. 1759 * 1760 * @param v the view to draw 1761 * @param destCanvas the canvas to draw on 1762 * @param padding the horizontal and vertical padding to use when drawing 1763 */ 1764 private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { 1765 final Rect clipRect = mTempRect; 1766 v.getDrawingRect(clipRect); 1767 1768 boolean textVisible = false; 1769 1770 destCanvas.save(); 1771 if (v instanceof TextView && pruneToDrawable) { 1772 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1773 clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); 1774 destCanvas.translate(padding / 2, padding / 2); 1775 d.draw(destCanvas); 1776 } else { 1777 if (v instanceof FolderIcon) { 1778 // For FolderIcons the text can bleed into the icon area, and so we need to 1779 // hide the text completely (which can't be achieved by clipping). 1780 if (((FolderIcon) v).getTextVisible()) { 1781 ((FolderIcon) v).setTextVisible(false); 1782 textVisible = true; 1783 } 1784 } else if (v instanceof BubbleTextView) { 1785 final BubbleTextView tv = (BubbleTextView) v; 1786 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1787 tv.getLayout().getLineTop(0); 1788 } else if (v instanceof TextView) { 1789 final TextView tv = (TextView) v; 1790 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1791 tv.getLayout().getLineTop(0); 1792 } 1793 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1794 destCanvas.clipRect(clipRect, Op.REPLACE); 1795 v.draw(destCanvas); 1796 1797 // Restore text visibility of FolderIcon if necessary 1798 if (textVisible) { 1799 ((FolderIcon) v).setTextVisible(true); 1800 } 1801 } 1802 destCanvas.restore(); 1803 } 1804 1805 /** 1806 * Returns a new bitmap to show when the given View is being dragged around. 1807 * Responsibility for the bitmap is transferred to the caller. 1808 */ 1809 public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1810 Bitmap b; 1811 1812 if (v instanceof TextView) { 1813 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1814 b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, 1815 d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); 1816 } else { 1817 b = Bitmap.createBitmap( 1818 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1819 } 1820 1821 canvas.setBitmap(b); 1822 drawDragView(v, canvas, padding, true); 1823 canvas.setBitmap(null); 1824 1825 return b; 1826 } 1827 1828 /** 1829 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1830 * Responsibility for the bitmap is transferred to the caller. 1831 */ 1832 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1833 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1834 final Bitmap b = Bitmap.createBitmap( 1835 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1836 1837 canvas.setBitmap(b); 1838 drawDragView(v, canvas, padding, true); 1839 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1840 canvas.setBitmap(null); 1841 return b; 1842 } 1843 1844 /** 1845 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1846 * Responsibility for the bitmap is transferred to the caller. 1847 */ 1848 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h, 1849 Paint alphaClipPaint) { 1850 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1851 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1852 canvas.setBitmap(b); 1853 1854 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 1855 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 1856 (h - padding) / (float) orig.getHeight()); 1857 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 1858 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 1859 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 1860 1861 // center the image 1862 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 1863 1864 canvas.drawBitmap(orig, src, dst, null); 1865 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor, 1866 alphaClipPaint); 1867 canvas.setBitmap(null); 1868 1869 return b; 1870 } 1871 1872 void startDrag(CellLayout.CellInfo cellInfo) { 1873 View child = cellInfo.cell; 1874 1875 // Make sure the drag was started by a long press as opposed to a long click. 1876 if (!child.isInTouchMode()) { 1877 return; 1878 } 1879 1880 mDragInfo = cellInfo; 1881 child.setVisibility(INVISIBLE); 1882 CellLayout layout = (CellLayout) child.getParent().getParent(); 1883 layout.prepareChildForDrag(child); 1884 1885 child.clearFocus(); 1886 child.setPressed(false); 1887 1888 final Canvas canvas = new Canvas(); 1889 1890 // The outline is used to visualize where the item will land if dropped 1891 mDragOutline = createDragOutline(child, canvas, DRAG_BITMAP_PADDING); 1892 beginDragShared(child, this); 1893 } 1894 1895 public void beginDragShared(View child, DragSource source) { 1896 Resources r = getResources(); 1897 1898 // The drag bitmap follows the touch point around on the screen 1899 final Bitmap b = createDragBitmap(child, new Canvas(), DRAG_BITMAP_PADDING); 1900 1901 final int bmpWidth = b.getWidth(); 1902 final int bmpHeight = b.getHeight(); 1903 1904 mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 1905 int dragLayerX = 1906 Math.round(mTempXY[0] - (bmpWidth - child.getScaleX() * child.getWidth()) / 2); 1907 int dragLayerY = 1908 Math.round(mTempXY[1] - (bmpHeight - child.getScaleY() * bmpHeight) / 2 1909 - DRAG_BITMAP_PADDING / 2); 1910 1911 Point dragVisualizeOffset = null; 1912 Rect dragRect = null; 1913 if (child instanceof BubbleTextView || child instanceof PagedViewIcon) { 1914 int iconSize = r.getDimensionPixelSize(R.dimen.app_icon_size); 1915 int iconPaddingTop = r.getDimensionPixelSize(R.dimen.app_icon_padding_top); 1916 int top = child.getPaddingTop(); 1917 int left = (bmpWidth - iconSize) / 2; 1918 int right = left + iconSize; 1919 int bottom = top + iconSize; 1920 dragLayerY += top; 1921 // Note: The drag region is used to calculate drag layer offsets, but the 1922 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 1923 dragVisualizeOffset = new Point(-DRAG_BITMAP_PADDING / 2, 1924 iconPaddingTop - DRAG_BITMAP_PADDING / 2); 1925 dragRect = new Rect(left, top, right, bottom); 1926 } else if (child instanceof FolderIcon) { 1927 int previewSize = r.getDimensionPixelSize(R.dimen.folder_preview_size); 1928 dragRect = new Rect(0, 0, child.getWidth(), previewSize); 1929 } 1930 1931 // Clear the pressed state if necessary 1932 if (child instanceof BubbleTextView) { 1933 BubbleTextView icon = (BubbleTextView) child; 1934 icon.clearPressedOrFocusedBackground(); 1935 } 1936 1937 mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 1938 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect, child.getScaleX()); 1939 b.recycle(); 1940 1941 // Show the scrolling indicator when you pick up an item 1942 showScrollingIndicator(false); 1943 } 1944 1945 void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, int screen, 1946 int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { 1947 View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); 1948 1949 final int[] cellXY = new int[2]; 1950 target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1951 addInScreen(view, container, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1952 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, cellXY[0], 1953 cellXY[1]); 1954 } 1955 1956 public boolean transitionStateShouldAllowDrop() { 1957 return ((!isSwitchingState() || mTransitionProgress > 0.5f) && mState != State.SMALL); 1958 } 1959 1960 /** 1961 * {@inheritDoc} 1962 */ 1963 public boolean acceptDrop(DragObject d) { 1964 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1965 CellLayout dropTargetLayout = mDropToLayout; 1966 if (d.dragSource != this) { 1967 // Don't accept the drop if we're not over a screen at time of drop 1968 if (dropTargetLayout == null) { 1969 return false; 1970 } 1971 if (!transitionStateShouldAllowDrop()) return false; 1972 1973 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 1974 d.dragView, mDragViewVisualCenter); 1975 1976 // We want the point to be mapped to the dragTarget. 1977 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 1978 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 1979 } else { 1980 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 1981 } 1982 1983 int spanX = 1; 1984 int spanY = 1; 1985 if (mDragInfo != null) { 1986 final CellLayout.CellInfo dragCellInfo = mDragInfo; 1987 spanX = dragCellInfo.spanX; 1988 spanY = dragCellInfo.spanY; 1989 } else { 1990 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 1991 spanX = dragInfo.spanX; 1992 spanY = dragInfo.spanY; 1993 } 1994 1995 int minSpanX = spanX; 1996 int minSpanY = spanY; 1997 if (d.dragInfo instanceof PendingAddWidgetInfo) { 1998 minSpanX = ((PendingAddWidgetInfo) d.dragInfo).minSpanX; 1999 minSpanY = ((PendingAddWidgetInfo) d.dragInfo).minSpanY; 2000 } 2001 2002 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2003 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, dropTargetLayout, 2004 mTargetCell); 2005 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2006 mDragViewVisualCenter[1], mTargetCell); 2007 if (willCreateUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, 2008 mTargetCell, distance, true)) { 2009 return true; 2010 } 2011 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, 2012 mTargetCell, distance)) { 2013 return true; 2014 } 2015 2016 int[] resultSpan = new int[2]; 2017 mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], 2018 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2019 null, mTargetCell, resultSpan, CellLayout.MODE_ACCEPT_DROP); 2020 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2021 2022 // Don't accept the drop if there's no room for the item 2023 if (!foundCell) { 2024 // Don't show the message if we are dropping on the AllApps button and the hotseat 2025 // is full 2026 boolean isHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2027 if (mTargetCell != null && isHotseat) { 2028 Hotseat hotseat = mLauncher.getHotseat(); 2029 if (hotseat.isAllAppsButtonRank( 2030 hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { 2031 return false; 2032 } 2033 } 2034 2035 mLauncher.showOutOfSpaceMessage(isHotseat); 2036 return false; 2037 } 2038 } 2039 return true; 2040 } 2041 2042 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, float 2043 distance, boolean considerTimeout) { 2044 if (distance > mMaxDistanceForFolderCreation) return false; 2045 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2046 2047 if (dropOverView != null) { 2048 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2049 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2050 return false; 2051 } 2052 } 2053 2054 boolean hasntMoved = false; 2055 if (mDragInfo != null) { 2056 hasntMoved = dropOverView == mDragInfo.cell; 2057 } 2058 2059 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2060 return false; 2061 } 2062 2063 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2064 boolean willBecomeShortcut = 2065 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2066 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2067 2068 return (aboveShortcut && willBecomeShortcut); 2069 } 2070 2071 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell, 2072 float distance) { 2073 if (distance > mMaxDistanceForFolderCreation) return false; 2074 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2075 2076 if (dropOverView != null) { 2077 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2078 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2079 return false; 2080 } 2081 } 2082 2083 if (dropOverView instanceof FolderIcon) { 2084 FolderIcon fi = (FolderIcon) dropOverView; 2085 if (fi.acceptDrop(dragInfo)) { 2086 return true; 2087 } 2088 } 2089 return false; 2090 } 2091 2092 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2093 int[] targetCell, float distance, boolean external, DragView dragView, 2094 Runnable postAnimationRunnable) { 2095 if (distance > mMaxDistanceForFolderCreation) return false; 2096 View v = target.getChildAt(targetCell[0], targetCell[1]); 2097 2098 boolean hasntMoved = false; 2099 if (mDragInfo != null) { 2100 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2101 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2102 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2103 } 2104 2105 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2106 mCreateUserFolderOnDrop = false; 2107 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 2108 2109 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2110 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2111 2112 if (aboveShortcut && willBecomeShortcut) { 2113 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2114 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2115 // if the drag started here, we need to remove it from the workspace 2116 if (!external) { 2117 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2118 } 2119 2120 Rect folderLocation = new Rect(); 2121 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2122 target.removeView(v); 2123 2124 FolderIcon fi = 2125 mLauncher.addFolder(target, container, screen, targetCell[0], targetCell[1]); 2126 destInfo.cellX = -1; 2127 destInfo.cellY = -1; 2128 sourceInfo.cellX = -1; 2129 sourceInfo.cellY = -1; 2130 2131 // If the dragView is null, we can't animate 2132 boolean animate = dragView != null; 2133 if (animate) { 2134 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2135 postAnimationRunnable); 2136 } else { 2137 fi.addItem(destInfo); 2138 fi.addItem(sourceInfo); 2139 } 2140 return true; 2141 } 2142 return false; 2143 } 2144 2145 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2146 float distance, DragObject d, boolean external) { 2147 if (distance > mMaxDistanceForFolderCreation) return false; 2148 2149 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2150 if (!mAddToExistingFolderOnDrop) return false; 2151 mAddToExistingFolderOnDrop = false; 2152 2153 if (dropOverView instanceof FolderIcon) { 2154 FolderIcon fi = (FolderIcon) dropOverView; 2155 if (fi.acceptDrop(d.dragInfo)) { 2156 fi.onDrop(d); 2157 2158 // if the drag started here, we need to remove it from the workspace 2159 if (!external) { 2160 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2161 } 2162 return true; 2163 } 2164 } 2165 return false; 2166 } 2167 2168 public void onDrop(final DragObject d) { 2169 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2170 mDragViewVisualCenter); 2171 2172 CellLayout dropTargetLayout = mDropToLayout; 2173 2174 // We want the point to be mapped to the dragTarget. 2175 if (dropTargetLayout != null) { 2176 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 2177 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2178 } else { 2179 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 2180 } 2181 } 2182 2183 int snapScreen = -1; 2184 boolean resizeOnDrop = false; 2185 if (d.dragSource != this) { 2186 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2187 (int) mDragViewVisualCenter[1] }; 2188 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2189 } else if (mDragInfo != null) { 2190 final View cell = mDragInfo.cell; 2191 2192 Runnable resizeRunnable = null; 2193 if (dropTargetLayout != null) { 2194 // Move internally 2195 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2196 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2197 long container = hasMovedIntoHotseat ? 2198 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2199 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2200 int screen = (mTargetCell[0] < 0) ? 2201 mDragInfo.screen : indexOfChild(dropTargetLayout); 2202 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2203 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2204 // First we find the cell nearest to point at which the item is 2205 // dropped, without any consideration to whether there is an item there. 2206 2207 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2208 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2209 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2210 mDragViewVisualCenter[1], mTargetCell); 2211 2212 // If the item being dropped is a shortcut and the nearest drop 2213 // cell also contains a shortcut, then create a folder with the two shortcuts. 2214 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2215 dropTargetLayout, mTargetCell, distance, false, d.dragView, null)) { 2216 return; 2217 } 2218 2219 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, 2220 distance, d, false)) { 2221 return; 2222 } 2223 2224 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2225 // we need to find the nearest cell location that is vacant 2226 ItemInfo item = (ItemInfo) d.dragInfo; 2227 int minSpanX = item.spanX; 2228 int minSpanY = item.spanY; 2229 if (item.minSpanX > 0 && item.minSpanY > 0) { 2230 minSpanX = item.minSpanX; 2231 minSpanY = item.minSpanY; 2232 } 2233 2234 int[] resultSpan = new int[2]; 2235 mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], 2236 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, cell, 2237 mTargetCell, resultSpan, CellLayout.MODE_ON_DROP); 2238 2239 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2240 if (foundCell && (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY)) { 2241 resizeOnDrop = true; 2242 item.spanX = resultSpan[0]; 2243 item.spanY = resultSpan[1]; 2244 } 2245 2246 if (mCurrentPage != screen && !hasMovedIntoHotseat) { 2247 snapScreen = screen; 2248 snapToPage(screen); 2249 } 2250 2251 if (foundCell) { 2252 final ItemInfo info = (ItemInfo) cell.getTag(); 2253 if (hasMovedLayouts) { 2254 // Reparent the view 2255 getParentCellLayoutForView(cell).removeView(cell); 2256 addInScreen(cell, container, screen, mTargetCell[0], mTargetCell[1], 2257 info.spanX, info.spanY); 2258 } 2259 2260 // update the item's position after drop 2261 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2262 lp.cellX = lp.tmpCellX = mTargetCell[0]; 2263 lp.cellY = lp.tmpCellY = mTargetCell[1]; 2264 lp.cellHSpan = item.spanX; 2265 lp.cellVSpan = item.spanY; 2266 lp.isLockedToGrid = true; 2267 cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screen, 2268 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2269 2270 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2271 cell instanceof LauncherAppWidgetHostView) { 2272 final CellLayout cellLayout = dropTargetLayout; 2273 // We post this call so that the widget has a chance to be placed 2274 // in its final location 2275 2276 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2277 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2278 if (pinfo != null && 2279 pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2280 final Runnable addResizeFrame = new Runnable() { 2281 public void run() { 2282 DragLayer dragLayer = mLauncher.getDragLayer(); 2283 dragLayer.addResizeFrame(info, hostView, cellLayout); 2284 } 2285 }; 2286 resizeRunnable = (new Runnable() { 2287 public void run() { 2288 if (!isPageMoving()) { 2289 addResizeFrame.run(); 2290 } else { 2291 mDelayedResizeRunnable = addResizeFrame; 2292 } 2293 } 2294 }); 2295 } 2296 } 2297 2298 LauncherModel.moveItemInDatabase(mLauncher, info, container, screen, lp.cellX, 2299 lp.cellY); 2300 } else { 2301 // If we can't find a drop location, we return the item to its original position 2302 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2303 mTargetCell[0] = lp.cellX; 2304 mTargetCell[1] = lp.cellY; 2305 } 2306 } 2307 2308 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2309 final Runnable finalResizeRunnable = resizeRunnable; 2310 // Prepare it to be animated into its new position 2311 // This must be called after the view has been re-parented 2312 final Runnable onCompleteRunnable = new Runnable() { 2313 @Override 2314 public void run() { 2315 mAnimatingViewIntoPlace = false; 2316 updateChildrenLayersEnabled(); 2317 if (finalResizeRunnable != null) { 2318 finalResizeRunnable.run(); 2319 } 2320 } 2321 }; 2322 mAnimatingViewIntoPlace = true; 2323 if (d.dragView.hasDrawn()) { 2324 final ItemInfo info = (ItemInfo) cell.getTag(); 2325 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET) { 2326 int animationType = resizeOnDrop ? ANIMATE_INTO_POSITION_AND_RESIZE : 2327 ANIMATE_INTO_POSITION_AND_DISAPPEAR; 2328 animateWidgetDrop(info, parent, d.dragView, 2329 onCompleteRunnable, animationType, cell, false); 2330 } else { 2331 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2332 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2333 onCompleteRunnable, this); 2334 } 2335 } else { 2336 d.deferDragViewCleanupPostAnimation = false; 2337 cell.setVisibility(VISIBLE); 2338 } 2339 parent.onDropChild(cell); 2340 } 2341 } 2342 2343 public void setFinalScrollForPageChange(int screen) { 2344 if (screen >= 0) { 2345 mSavedScrollX = getScrollX(); 2346 CellLayout cl = (CellLayout) getChildAt(screen); 2347 mSavedTranslationX = cl.getTranslationX(); 2348 mSavedRotationY = cl.getRotationY(); 2349 final int newX = getChildOffset(screen) - getRelativeChildOffset(screen); 2350 setScrollX(newX); 2351 cl.setTranslationX(0f); 2352 cl.setRotationY(0f); 2353 } 2354 } 2355 2356 public void resetFinalScrollForPageChange(int screen) { 2357 if (screen >= 0) { 2358 CellLayout cl = (CellLayout) getChildAt(screen); 2359 setScrollX(mSavedScrollX); 2360 cl.setTranslationX(mSavedTranslationX); 2361 cl.setRotationY(mSavedRotationY); 2362 } 2363 } 2364 2365 public void getViewLocationRelativeToSelf(View v, int[] location) { 2366 getLocationInWindow(location); 2367 int x = location[0]; 2368 int y = location[1]; 2369 2370 v.getLocationInWindow(location); 2371 int vX = location[0]; 2372 int vY = location[1]; 2373 2374 location[0] = vX - x; 2375 location[1] = vY - y; 2376 } 2377 2378 public void onDragEnter(DragObject d) { 2379 mDragEnforcer.onDragEnter(); 2380 mCreateUserFolderOnDrop = false; 2381 mAddToExistingFolderOnDrop = false; 2382 2383 mDropToLayout = null; 2384 CellLayout layout = getCurrentDropLayout(); 2385 setCurrentDropLayout(layout); 2386 setCurrentDragOverlappingLayout(layout); 2387 2388 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2389 // don't need to show the outlines 2390 if (LauncherApplication.isScreenLarge()) { 2391 showOutlines(); 2392 } 2393 } 2394 2395 static Rect getCellLayoutMetrics(Launcher launcher, int orientation) { 2396 Resources res = launcher.getResources(); 2397 Display display = launcher.getWindowManager().getDefaultDisplay(); 2398 Point smallestSize = new Point(); 2399 Point largestSize = new Point(); 2400 display.getCurrentSizeRange(smallestSize, largestSize); 2401 if (orientation == CellLayout.LANDSCAPE) { 2402 if (mLandscapeCellLayoutMetrics == null) { 2403 int paddingLeft = res.getDimensionPixelSize(R.dimen.workspace_left_padding_land); 2404 int paddingRight = res.getDimensionPixelSize(R.dimen.workspace_right_padding_land); 2405 int paddingTop = res.getDimensionPixelSize(R.dimen.workspace_top_padding_land); 2406 int paddingBottom = res.getDimensionPixelSize(R.dimen.workspace_bottom_padding_land); 2407 int width = largestSize.x - paddingLeft - paddingRight; 2408 int height = smallestSize.y - paddingTop - paddingBottom; 2409 mLandscapeCellLayoutMetrics = new Rect(); 2410 CellLayout.getMetrics(mLandscapeCellLayoutMetrics, res, 2411 width, height, LauncherModel.getCellCountX(), LauncherModel.getCellCountY(), 2412 orientation); 2413 } 2414 return mLandscapeCellLayoutMetrics; 2415 } else if (orientation == CellLayout.PORTRAIT) { 2416 if (mPortraitCellLayoutMetrics == null) { 2417 int paddingLeft = res.getDimensionPixelSize(R.dimen.workspace_left_padding_land); 2418 int paddingRight = res.getDimensionPixelSize(R.dimen.workspace_right_padding_land); 2419 int paddingTop = res.getDimensionPixelSize(R.dimen.workspace_top_padding_land); 2420 int paddingBottom = res.getDimensionPixelSize(R.dimen.workspace_bottom_padding_land); 2421 int width = smallestSize.x - paddingLeft - paddingRight; 2422 int height = largestSize.y - paddingTop - paddingBottom; 2423 mPortraitCellLayoutMetrics = new Rect(); 2424 CellLayout.getMetrics(mPortraitCellLayoutMetrics, res, 2425 width, height, LauncherModel.getCellCountX(), LauncherModel.getCellCountY(), 2426 orientation); 2427 } 2428 return mPortraitCellLayoutMetrics; 2429 } 2430 return null; 2431 } 2432 2433 public void onDragExit(DragObject d) { 2434 mDragEnforcer.onDragExit(); 2435 2436 // Here we store the final page that will be dropped to, if the workspace in fact 2437 // receives the drop 2438 if (mInScrollArea) { 2439 mDropToLayout = mDragOverlappingLayout; 2440 } else { 2441 mDropToLayout = mDragTargetLayout; 2442 } 2443 2444 if (mDragMode == DRAG_MODE_CREATE_FOLDER) { 2445 mCreateUserFolderOnDrop = true; 2446 } else if (mDragMode == DRAG_MODE_ADD_TO_FOLDER) { 2447 mAddToExistingFolderOnDrop = true; 2448 } 2449 2450 // Reset the scroll area and previous drag target 2451 onResetScrollArea(); 2452 setCurrentDropLayout(null); 2453 setCurrentDragOverlappingLayout(null); 2454 2455 mSpringLoadedDragController.cancel(); 2456 2457 if (!mIsPageMoving) { 2458 hideOutlines(); 2459 } 2460 } 2461 2462 void setCurrentDropLayout(CellLayout layout) { 2463 if (mDragTargetLayout != null) { 2464 mDragTargetLayout.revertTempState(); 2465 mDragTargetLayout.onDragExit(); 2466 } 2467 mDragTargetLayout = layout; 2468 if (mDragTargetLayout != null) { 2469 mDragTargetLayout.onDragEnter(); 2470 } 2471 cleanupReorder(true); 2472 cleanupFolderCreation(); 2473 setCurrentDropOverCell(-1, -1); 2474 } 2475 2476 void setCurrentDragOverlappingLayout(CellLayout layout) { 2477 if (mDragOverlappingLayout != null) { 2478 mDragOverlappingLayout.setIsDragOverlapping(false); 2479 } 2480 mDragOverlappingLayout = layout; 2481 if (mDragOverlappingLayout != null) { 2482 mDragOverlappingLayout.setIsDragOverlapping(true); 2483 } 2484 invalidate(); 2485 } 2486 2487 void setCurrentDropOverCell(int x, int y) { 2488 if (x != mDragOverX || y != mDragOverY) { 2489 mDragOverX = x; 2490 mDragOverY = y; 2491 setDragMode(DRAG_MODE_NONE); 2492 } 2493 } 2494 2495 void setDragMode(int dragMode) { 2496 if (dragMode != mDragMode) { 2497 if (dragMode == DRAG_MODE_NONE) { 2498 cleanupAddToFolder(); 2499 // We don't want to cancel the re-order alarm every time the target cell changes 2500 // as this feels to slow / unresponsive. 2501 cleanupReorder(false); 2502 cleanupFolderCreation(); 2503 } else if (dragMode == DRAG_MODE_ADD_TO_FOLDER) { 2504 cleanupReorder(true); 2505 cleanupFolderCreation(); 2506 } else if (dragMode == DRAG_MODE_CREATE_FOLDER) { 2507 cleanupAddToFolder(); 2508 cleanupReorder(true); 2509 } else if (dragMode == DRAG_MODE_REORDER) { 2510 cleanupAddToFolder(); 2511 cleanupFolderCreation(); 2512 } 2513 mDragMode = dragMode; 2514 } 2515 } 2516 2517 private void cleanupFolderCreation() { 2518 if (mDragFolderRingAnimator != null) { 2519 mDragFolderRingAnimator.animateToNaturalState(); 2520 } 2521 mFolderCreationAlarm.cancelAlarm(); 2522 } 2523 2524 private void cleanupAddToFolder() { 2525 if (mDragOverFolderIcon != null) { 2526 mDragOverFolderIcon.onDragExit(null); 2527 mDragOverFolderIcon = null; 2528 } 2529 } 2530 2531 private void cleanupReorder(boolean cancelAlarm) { 2532 // Any pending reorders are canceled 2533 if (cancelAlarm) { 2534 mReorderAlarm.cancelAlarm(); 2535 } 2536 mLastReorderX = -1; 2537 mLastReorderY = -1; 2538 } 2539 2540 public DropTarget getDropTargetDelegate(DragObject d) { 2541 return null; 2542 } 2543 2544 /* 2545 * 2546 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2547 * coordinate space. The argument xy is modified with the return result. 2548 * 2549 */ 2550 void mapPointFromSelfToChild(View v, float[] xy) { 2551 mapPointFromSelfToChild(v, xy, null); 2552 } 2553 2554 /* 2555 * 2556 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2557 * coordinate space. The argument xy is modified with the return result. 2558 * 2559 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2560 * computing it itself; we use this to avoid redundant matrix inversions in 2561 * findMatchingPageForDragOver 2562 * 2563 */ 2564 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2565 if (cachedInverseMatrix == null) { 2566 v.getMatrix().invert(mTempInverseMatrix); 2567 cachedInverseMatrix = mTempInverseMatrix; 2568 } 2569 int scrollX = getScrollX(); 2570 if (mNextPage != INVALID_PAGE) { 2571 scrollX = mScroller.getFinalX(); 2572 } 2573 xy[0] = xy[0] + scrollX - v.getLeft(); 2574 xy[1] = xy[1] + getScrollY() - v.getTop(); 2575 cachedInverseMatrix.mapPoints(xy); 2576 } 2577 2578 /* 2579 * Maps a point from the Workspace's coordinate system to another sibling view's. (Workspace 2580 * covers the full screen) 2581 */ 2582 void mapPointFromSelfToSibling(View v, float[] xy) { 2583 xy[0] = xy[0] - v.getLeft(); 2584 xy[1] = xy[1] - v.getTop(); 2585 } 2586 2587 void mapPointFromSelfToHotseatLayout(Hotseat hotseat, float[] xy) { 2588 xy[0] = xy[0] - hotseat.getLeft() - hotseat.getLayout().getLeft(); 2589 xy[1] = xy[1] - hotseat.getTop() - hotseat.getLayout().getTop(); 2590 } 2591 2592 /* 2593 * 2594 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2595 * the parent View's coordinate space. The argument xy is modified with the return result. 2596 * 2597 */ 2598 void mapPointFromChildToSelf(View v, float[] xy) { 2599 v.getMatrix().mapPoints(xy); 2600 int scrollX = getScrollX(); 2601 if (mNextPage != INVALID_PAGE) { 2602 scrollX = mScroller.getFinalX(); 2603 } 2604 xy[0] -= (scrollX - v.getLeft()); 2605 xy[1] -= (getScrollY() - v.getTop()); 2606 } 2607 2608 static private float squaredDistance(float[] point1, float[] point2) { 2609 float distanceX = point1[0] - point2[0]; 2610 float distanceY = point2[1] - point2[1]; 2611 return distanceX * distanceX + distanceY * distanceY; 2612 } 2613 2614 /* 2615 * 2616 * Returns true if the passed CellLayout cl overlaps with dragView 2617 * 2618 */ 2619 boolean overlaps(CellLayout cl, DragView dragView, 2620 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2621 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2622 final float[] draggedItemTopLeft = mTempDragCoordinates; 2623 draggedItemTopLeft[0] = dragViewX; 2624 draggedItemTopLeft[1] = dragViewY; 2625 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2626 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2627 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2628 2629 // Transform the dragged item's top left coordinates 2630 // to the CellLayout's local coordinates 2631 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2632 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2633 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2634 2635 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2636 // Transform the dragged item's bottom right coordinates 2637 // to the CellLayout's local coordinates 2638 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2639 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2640 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2641 2642 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2643 float overlap = (overlapRegionRight - overlapRegionLeft) * 2644 (overlapRegionBottom - overlapRegionTop); 2645 if (overlap > 0) { 2646 return true; 2647 } 2648 } 2649 } 2650 return false; 2651 } 2652 2653 /* 2654 * 2655 * This method returns the CellLayout that is currently being dragged to. In order to drag 2656 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2657 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2658 * 2659 * Return null if no CellLayout is currently being dragged over 2660 * 2661 */ 2662 private CellLayout findMatchingPageForDragOver( 2663 DragView dragView, float originX, float originY, boolean exact) { 2664 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2665 // with the item being dragged and then choose the one that's closest to the touch point 2666 final int screenCount = getChildCount(); 2667 CellLayout bestMatchingScreen = null; 2668 float smallestDistSoFar = Float.MAX_VALUE; 2669 2670 for (int i = 0; i < screenCount; i++) { 2671 CellLayout cl = (CellLayout) getChildAt(i); 2672 2673 final float[] touchXy = {originX, originY}; 2674 // Transform the touch coordinates to the CellLayout's local coordinates 2675 // If the touch point is within the bounds of the cell layout, we can return immediately 2676 cl.getMatrix().invert(mTempInverseMatrix); 2677 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2678 2679 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2680 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2681 return cl; 2682 } 2683 2684 if (!exact) { 2685 // Get the center of the cell layout in screen coordinates 2686 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2687 cellLayoutCenter[0] = cl.getWidth()/2; 2688 cellLayoutCenter[1] = cl.getHeight()/2; 2689 mapPointFromChildToSelf(cl, cellLayoutCenter); 2690 2691 touchXy[0] = originX; 2692 touchXy[1] = originY; 2693 2694 // Calculate the distance between the center of the CellLayout 2695 // and the touch point 2696 float dist = squaredDistance(touchXy, cellLayoutCenter); 2697 2698 if (dist < smallestDistSoFar) { 2699 smallestDistSoFar = dist; 2700 bestMatchingScreen = cl; 2701 } 2702 } 2703 } 2704 return bestMatchingScreen; 2705 } 2706 2707 // This is used to compute the visual center of the dragView. This point is then 2708 // used to visualize drop locations and determine where to drop an item. The idea is that 2709 // the visual center represents the user's interpretation of where the item is, and hence 2710 // is the appropriate point to use when determining drop location. 2711 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2712 DragView dragView, float[] recycle) { 2713 float res[]; 2714 if (recycle == null) { 2715 res = new float[2]; 2716 } else { 2717 res = recycle; 2718 } 2719 2720 // First off, the drag view has been shifted in a way that is not represented in the 2721 // x and y values or the x/yOffsets. Here we account for that shift. 2722 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2723 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2724 2725 // These represent the visual top and left of drag view if a dragRect was provided. 2726 // If a dragRect was not provided, then they correspond to the actual view left and 2727 // top, as the dragRect is in that case taken to be the entire dragView. 2728 // R.dimen.dragViewOffsetY. 2729 int left = x - xOffset; 2730 int top = y - yOffset; 2731 2732 // In order to find the visual center, we shift by half the dragRect 2733 res[0] = left + dragView.getDragRegion().width() / 2; 2734 res[1] = top + dragView.getDragRegion().height() / 2; 2735 2736 return res; 2737 } 2738 2739 private boolean isDragWidget(DragObject d) { 2740 return (d.dragInfo instanceof LauncherAppWidgetInfo || 2741 d.dragInfo instanceof PendingAddWidgetInfo); 2742 } 2743 private boolean isExternalDragWidget(DragObject d) { 2744 return d.dragSource != this && isDragWidget(d); 2745 } 2746 2747 public void onDragOver(DragObject d) { 2748 // Skip drag over events while we are dragging over side pages 2749 if (mInScrollArea || mIsSwitchingState || mState == State.SMALL) return; 2750 2751 Rect r = new Rect(); 2752 CellLayout layout = null; 2753 ItemInfo item = (ItemInfo) d.dragInfo; 2754 2755 // Ensure that we have proper spans for the item that we are dropping 2756 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2757 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2758 d.dragView, mDragViewVisualCenter); 2759 2760 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2761 // Identify whether we have dragged over a side page 2762 if (isSmall()) { 2763 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 2764 mLauncher.getHotseat().getHitRect(r); 2765 if (r.contains(d.x, d.y)) { 2766 layout = mLauncher.getHotseat().getLayout(); 2767 } 2768 } 2769 if (layout == null) { 2770 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false); 2771 } 2772 if (layout != mDragTargetLayout) { 2773 2774 setCurrentDropLayout(layout); 2775 setCurrentDragOverlappingLayout(layout); 2776 2777 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 2778 if (isInSpringLoadedMode) { 2779 if (mLauncher.isHotseatLayout(layout)) { 2780 mSpringLoadedDragController.cancel(); 2781 } else { 2782 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2783 } 2784 } 2785 } 2786 } else { 2787 // Test to see if we are over the hotseat otherwise just use the current page 2788 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 2789 mLauncher.getHotseat().getHitRect(r); 2790 if (r.contains(d.x, d.y)) { 2791 layout = mLauncher.getHotseat().getLayout(); 2792 } 2793 } 2794 if (layout == null) { 2795 layout = getCurrentDropLayout(); 2796 } 2797 if (layout != mDragTargetLayout) { 2798 setCurrentDropLayout(layout); 2799 setCurrentDragOverlappingLayout(layout); 2800 } 2801 } 2802 2803 // Handle the drag over 2804 if (mDragTargetLayout != null) { 2805 // We want the point to be mapped to the dragTarget. 2806 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2807 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2808 } else { 2809 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2810 } 2811 2812 ItemInfo info = (ItemInfo) d.dragInfo; 2813 2814 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2815 (int) mDragViewVisualCenter[1], 1, 1, mDragTargetLayout, mTargetCell); 2816 2817 setCurrentDropOverCell(mTargetCell[0], mTargetCell[1]); 2818 2819 float targetCellDistance = mDragTargetLayout.getDistanceFromCell( 2820 mDragViewVisualCenter[0], mDragViewVisualCenter[1], mTargetCell); 2821 2822 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2823 mTargetCell[1]); 2824 2825 manageFolderFeedback(info, mDragTargetLayout, mTargetCell, 2826 targetCellDistance, dragOverView); 2827 2828 int minSpanX = item.spanX; 2829 int minSpanY = item.spanY; 2830 if (item.minSpanX > 0 && item.minSpanY > 0) { 2831 minSpanX = item.minSpanX; 2832 minSpanY = item.minSpanY; 2833 } 2834 2835 int[] reorderPosition = new int[2]; 2836 reorderPosition = findNearestArea((int) mDragViewVisualCenter[0], 2837 (int) mDragViewVisualCenter[1], item.spanX, item.spanY, mDragTargetLayout, 2838 reorderPosition); 2839 2840 boolean nearestDropOccupied = mDragTargetLayout.isNearestDropLocationOccupied((int) 2841 mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], item.spanX, 2842 item.spanY, child, mTargetCell); 2843 2844 if (!nearestDropOccupied) { 2845 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2846 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2847 mTargetCell[0], mTargetCell[1], item.spanX, item.spanY, false, 2848 d.dragView.getDragVisualizeOffset(), d.dragView.getDragRegion()); 2849 } else if ((mDragMode == DRAG_MODE_NONE || mDragMode == DRAG_MODE_REORDER) 2850 && !mReorderAlarm.alarmPending() && (mLastReorderX != reorderPosition[0] || 2851 mLastReorderY != reorderPosition[1])) { 2852 // Otherwise, if we aren't adding to or creating a folder and there's no pending 2853 // reorder, then we schedule a reorder 2854 ReorderAlarmListener listener = new ReorderAlarmListener(mDragViewVisualCenter, 2855 minSpanX, minSpanY, item.spanX, item.spanY, d.dragView, child); 2856 mReorderAlarm.setOnAlarmListener(listener); 2857 mReorderAlarm.setAlarm(REORDER_TIMEOUT); 2858 } 2859 2860 if (mDragMode == DRAG_MODE_CREATE_FOLDER || mDragMode == DRAG_MODE_ADD_TO_FOLDER || 2861 !nearestDropOccupied) { 2862 if (mDragTargetLayout != null) { 2863 mDragTargetLayout.revertTempState(); 2864 } 2865 } 2866 } 2867 } 2868 2869 private void manageFolderFeedback(ItemInfo info, CellLayout targetLayout, 2870 int[] targetCell, float distance, View dragOverView) { 2871 boolean userFolderPending = willCreateUserFolder(info, targetLayout, targetCell, distance, 2872 false); 2873 2874 if (mDragMode == DRAG_MODE_NONE && userFolderPending && 2875 !mFolderCreationAlarm.alarmPending()) { 2876 mFolderCreationAlarm.setOnAlarmListener(new 2877 FolderCreationAlarmListener(targetLayout, targetCell[0], targetCell[1])); 2878 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2879 return; 2880 } 2881 2882 boolean willAddToFolder = 2883 willAddToExistingUserFolder(info, targetLayout, targetCell, distance); 2884 2885 if (willAddToFolder && mDragMode == DRAG_MODE_NONE) { 2886 mDragOverFolderIcon = ((FolderIcon) dragOverView); 2887 mAddToExistingFolderOnDrop = true; 2888 mDragOverFolderIcon.onDragEnter(info); 2889 if (targetLayout != null) { 2890 targetLayout.clearDragOutlines(); 2891 } 2892 setDragMode(DRAG_MODE_ADD_TO_FOLDER); 2893 return; 2894 } 2895 2896 if (mDragMode == DRAG_MODE_ADD_TO_FOLDER && !willAddToFolder) { 2897 setDragMode(DRAG_MODE_NONE); 2898 } 2899 if (mDragMode == DRAG_MODE_CREATE_FOLDER && !userFolderPending) { 2900 setDragMode(DRAG_MODE_NONE); 2901 } 2902 2903 return; 2904 } 2905 2906 class FolderCreationAlarmListener implements OnAlarmListener { 2907 CellLayout layout; 2908 int cellX; 2909 int cellY; 2910 2911 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 2912 this.layout = layout; 2913 this.cellX = cellX; 2914 this.cellY = cellY; 2915 } 2916 2917 public void onAlarm(Alarm alarm) { 2918 if (mDragFolderRingAnimator == null) { 2919 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 2920 } 2921 mDragFolderRingAnimator.setCell(cellX, cellY); 2922 mDragFolderRingAnimator.setCellLayout(layout); 2923 mDragFolderRingAnimator.animateToAcceptState(); 2924 layout.showFolderAccept(mDragFolderRingAnimator); 2925 layout.clearDragOutlines(); 2926 setDragMode(DRAG_MODE_CREATE_FOLDER); 2927 } 2928 } 2929 2930 class ReorderAlarmListener implements OnAlarmListener { 2931 float[] dragViewCenter; 2932 int minSpanX, minSpanY, spanX, spanY; 2933 DragView dragView; 2934 View child; 2935 2936 public ReorderAlarmListener(float[] dragViewCenter, int minSpanX, int minSpanY, int spanX, 2937 int spanY, DragView dragView, View child) { 2938 this.dragViewCenter = dragViewCenter; 2939 this.minSpanX = minSpanX; 2940 this.minSpanY = minSpanY; 2941 this.spanX = spanX; 2942 this.spanY = spanY; 2943 this.child = child; 2944 this.dragView = dragView; 2945 } 2946 2947 public void onAlarm(Alarm alarm) { 2948 int[] resultSpan = new int[2]; 2949 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2950 (int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell); 2951 mLastReorderX = mTargetCell[0]; 2952 mLastReorderY = mTargetCell[1]; 2953 2954 mTargetCell = mDragTargetLayout.createArea((int) mDragViewVisualCenter[0], 2955 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2956 child, mTargetCell, resultSpan, CellLayout.MODE_DRAG_OVER); 2957 2958 if (mTargetCell[0] < 0 || mTargetCell[1] < 0) { 2959 mDragTargetLayout.revertTempState(); 2960 } else { 2961 setDragMode(DRAG_MODE_REORDER); 2962 } 2963 2964 boolean resize = resultSpan[0] != spanX || resultSpan[1] != spanY; 2965 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2966 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2967 mTargetCell[0], mTargetCell[1], resultSpan[0], resultSpan[1], resize, 2968 dragView.getDragVisualizeOffset(), dragView.getDragRegion()); 2969 } 2970 } 2971 2972 @Override 2973 public void getHitRect(Rect outRect) { 2974 // We want the workspace to have the whole area of the display (it will find the correct 2975 // cell layout to drop to in the existing drag/drop logic. 2976 outRect.set(0, 0, mDisplaySize.x, mDisplaySize.y); 2977 } 2978 2979 /** 2980 * Add the item specified by dragInfo to the given layout. 2981 * @return true if successful 2982 */ 2983 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2984 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2985 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2986 return true; 2987 } 2988 mLauncher.showOutOfSpaceMessage(mLauncher.isHotseatLayout(layout)); 2989 return false; 2990 } 2991 2992 private void onDropExternal(int[] touchXY, Object dragInfo, 2993 CellLayout cellLayout, boolean insertAtFirst) { 2994 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 2995 } 2996 2997 /** 2998 * Drop an item that didn't originate on one of the workspace screens. 2999 * It may have come from Launcher (e.g. from all apps or customize), or it may have 3000 * come from another app altogether. 3001 * 3002 * NOTE: This can also be called when we are outside of a drag event, when we want 3003 * to add an item to one of the workspace screens. 3004 */ 3005 private void onDropExternal(final int[] touchXY, final Object dragInfo, 3006 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 3007 final Runnable exitSpringLoadedRunnable = new Runnable() { 3008 @Override 3009 public void run() { 3010 mLauncher.exitSpringLoadedDragModeDelayed(true, false, null); 3011 } 3012 }; 3013 3014 ItemInfo info = (ItemInfo) dragInfo; 3015 int spanX = info.spanX; 3016 int spanY = info.spanY; 3017 if (mDragInfo != null) { 3018 spanX = mDragInfo.spanX; 3019 spanY = mDragInfo.spanY; 3020 } 3021 3022 final long container = mLauncher.isHotseatLayout(cellLayout) ? 3023 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 3024 LauncherSettings.Favorites.CONTAINER_DESKTOP; 3025 final int screen = indexOfChild(cellLayout); 3026 if (!mLauncher.isHotseatLayout(cellLayout) && screen != mCurrentPage 3027 && mState != State.SPRING_LOADED) { 3028 snapToPage(screen); 3029 } 3030 3031 if (info instanceof PendingAddItemInfo) { 3032 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 3033 3034 boolean findNearestVacantCell = true; 3035 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 3036 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3037 cellLayout, mTargetCell); 3038 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3039 mDragViewVisualCenter[1], mTargetCell); 3040 if (willCreateUserFolder((ItemInfo) d.dragInfo, cellLayout, mTargetCell, 3041 distance, true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 3042 cellLayout, mTargetCell, distance)) { 3043 findNearestVacantCell = false; 3044 } 3045 } 3046 3047 final ItemInfo item = (ItemInfo) d.dragInfo; 3048 if (findNearestVacantCell) { 3049 int minSpanX = item.spanX; 3050 int minSpanY = item.spanY; 3051 if (item.minSpanX > 0 && item.minSpanY > 0) { 3052 minSpanX = item.minSpanX; 3053 minSpanY = item.minSpanY; 3054 } 3055 int[] resultSpan = new int[2]; 3056 mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], 3057 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, info.spanX, info.spanY, 3058 null, mTargetCell, resultSpan, CellLayout.MODE_ON_DROP_EXTERNAL); 3059 item.spanX = resultSpan[0]; 3060 item.spanY = resultSpan[1]; 3061 } 3062 3063 Runnable onAnimationCompleteRunnable = new Runnable() { 3064 @Override 3065 public void run() { 3066 // When dragging and dropping from customization tray, we deal with creating 3067 // widgets/shortcuts/folders in a slightly different way 3068 switch (pendingInfo.itemType) { 3069 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 3070 int span[] = new int[2]; 3071 span[0] = item.spanX; 3072 span[1] = item.spanY; 3073 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, 3074 container, screen, mTargetCell, span, null); 3075 break; 3076 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3077 mLauncher.processShortcutFromDrop(pendingInfo.componentName, 3078 container, screen, mTargetCell, null); 3079 break; 3080 default: 3081 throw new IllegalStateException("Unknown item type: " + 3082 pendingInfo.itemType); 3083 } 3084 } 3085 }; 3086 View finalView = pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET 3087 ? ((PendingAddWidgetInfo) pendingInfo).boundWidget : null; 3088 int animationStyle = ANIMATE_INTO_POSITION_AND_DISAPPEAR; 3089 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && 3090 ((PendingAddWidgetInfo) pendingInfo).info.configure != null) { 3091 animationStyle = ANIMATE_INTO_POSITION_AND_REMAIN; 3092 } 3093 animateWidgetDrop(info, cellLayout, d.dragView, onAnimationCompleteRunnable, 3094 animationStyle, finalView, true); 3095 } else { 3096 // This is for other drag/drop cases, like dragging from All Apps 3097 View view = null; 3098 3099 switch (info.itemType) { 3100 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 3101 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3102 if (info.container == NO_ID && info instanceof ApplicationInfo) { 3103 // Came from all apps -- make a copy 3104 info = new ShortcutInfo((ApplicationInfo) info); 3105 } 3106 view = mLauncher.createShortcut(R.layout.application, cellLayout, 3107 (ShortcutInfo) info); 3108 break; 3109 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 3110 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 3111 (FolderInfo) info, mIconCache); 3112 break; 3113 default: 3114 throw new IllegalStateException("Unknown item type: " + info.itemType); 3115 } 3116 3117 // First we find the cell nearest to point at which the item is 3118 // dropped, without any consideration to whether there is an item there. 3119 if (touchXY != null) { 3120 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3121 cellLayout, mTargetCell); 3122 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3123 mDragViewVisualCenter[1], mTargetCell); 3124 d.postAnimationRunnable = exitSpringLoadedRunnable; 3125 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, distance, 3126 true, d.dragView, d.postAnimationRunnable)) { 3127 return; 3128 } 3129 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, distance, d, 3130 true)) { 3131 return; 3132 } 3133 } 3134 3135 if (touchXY != null) { 3136 // when dragging and dropping, just find the closest free spot 3137 mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], 3138 (int) mDragViewVisualCenter[1], 1, 1, 1, 1, 3139 null, mTargetCell, null, CellLayout.MODE_ON_DROP_EXTERNAL); 3140 } else { 3141 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3142 } 3143 addInScreen(view, container, screen, mTargetCell[0], mTargetCell[1], info.spanX, 3144 info.spanY, insertAtFirst); 3145 cellLayout.onDropChild(view); 3146 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 3147 cellLayout.getShortcutsAndWidgets().measureChild(view); 3148 3149 3150 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, 3151 lp.cellX, lp.cellY); 3152 3153 if (d.dragView != null) { 3154 // We wrap the animation call in the temporary set and reset of the current 3155 // cellLayout to its final transform -- this means we animate the drag view to 3156 // the correct final location. 3157 setFinalTransitionTransform(cellLayout); 3158 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 3159 exitSpringLoadedRunnable); 3160 resetTransitionTransform(cellLayout); 3161 } 3162 } 3163 } 3164 3165 public Bitmap createWidgetBitmap(ItemInfo widgetInfo, View layout) { 3166 int[] unScaledSize = mLauncher.getWorkspace().estimateItemSize(widgetInfo.spanX, 3167 widgetInfo.spanY, widgetInfo, false); 3168 int visibility = layout.getVisibility(); 3169 layout.setVisibility(VISIBLE); 3170 3171 int width = MeasureSpec.makeMeasureSpec(unScaledSize[0], MeasureSpec.EXACTLY); 3172 int height = MeasureSpec.makeMeasureSpec(unScaledSize[1], MeasureSpec.EXACTLY); 3173 Bitmap b = Bitmap.createBitmap(unScaledSize[0], unScaledSize[1], 3174 Bitmap.Config.ARGB_8888); 3175 Canvas c = new Canvas(b); 3176 3177 layout.measure(width, height); 3178 layout.layout(0, 0, unScaledSize[0], unScaledSize[1]); 3179 layout.draw(c); 3180 c.setBitmap(null); 3181 layout.setVisibility(visibility); 3182 return b; 3183 } 3184 3185 private void getFinalPositionForDropAnimation(int[] loc, float[] scaleXY, 3186 DragView dragView, CellLayout layout, ItemInfo info, int[] targetCell, View finalView, 3187 boolean external) { 3188 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 3189 // location and size on the home screen. 3190 int spanX = info.spanX; 3191 int spanY = info.spanY; 3192 3193 Rect r = estimateItemPosition(layout, info, targetCell[0], targetCell[1], spanX, spanY); 3194 loc[0] = r.left; 3195 loc[1] = r.top; 3196 3197 setFinalTransitionTransform(layout); 3198 float cellLayoutScale = 3199 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(layout, loc); 3200 resetTransitionTransform(layout); 3201 float dragViewScaleX = (1.0f * r.width()) / dragView.getMeasuredWidth(); 3202 float dragViewScaleY = (1.0f * r.height()) / dragView.getMeasuredHeight(); 3203 3204 // The animation will scale the dragView about its center, so we need to center about 3205 // the final location. 3206 loc[0] -= (dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 3207 loc[1] -= (dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 3208 3209 scaleXY[0] = dragViewScaleX * cellLayoutScale; 3210 scaleXY[1] = dragViewScaleY * cellLayoutScale; 3211 } 3212 3213 public void animateWidgetDrop(ItemInfo info, CellLayout cellLayout, DragView dragView, 3214 final Runnable onCompleteRunnable, int animationType, final View finalView, 3215 boolean external) { 3216 Rect from = new Rect(); 3217 mLauncher.getDragLayer().getViewRectRelativeToSelf(dragView, from); 3218 3219 int[] finalPos = new int[2]; 3220 float scaleXY[] = new float[2]; 3221 getFinalPositionForDropAnimation(finalPos, scaleXY, dragView, cellLayout, info, mTargetCell, 3222 finalView, external); 3223 3224 Resources res = mLauncher.getResources(); 3225 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration) - 200; 3226 3227 // In the case where we've prebound the widget, we remove it from the DragLayer 3228 if (finalView instanceof AppWidgetHostView && external) { 3229 mLauncher.getDragLayer().removeView(finalView); 3230 } 3231 if ((animationType == ANIMATE_INTO_POSITION_AND_RESIZE || external) && finalView != null) { 3232 Bitmap crossFadeBitmap = createWidgetBitmap(info, finalView); 3233 dragView.setCrossFadeBitmap(crossFadeBitmap); 3234 dragView.crossFade((int) (duration * 0.8f)); 3235 } else if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && external) { 3236 scaleXY[0] = scaleXY[1] = Math.min(scaleXY[0], scaleXY[1]); 3237 } 3238 3239 DragLayer dragLayer = mLauncher.getDragLayer(); 3240 if (animationType == CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION) { 3241 mLauncher.getDragLayer().animateViewIntoPosition(dragView, finalPos, 0f, 0.1f, 0.1f, 3242 DragLayer.ANIMATION_END_DISAPPEAR, onCompleteRunnable, duration); 3243 } else { 3244 int endStyle; 3245 if (animationType == ANIMATE_INTO_POSITION_AND_REMAIN) { 3246 endStyle = DragLayer.ANIMATION_END_REMAIN_VISIBLE; 3247 } else { 3248 endStyle = DragLayer.ANIMATION_END_DISAPPEAR;; 3249 } 3250 3251 Runnable onComplete = new Runnable() { 3252 @Override 3253 public void run() { 3254 if (finalView != null) { 3255 finalView.setVisibility(VISIBLE); 3256 } 3257 if (onCompleteRunnable != null) { 3258 onCompleteRunnable.run(); 3259 } 3260 } 3261 }; 3262 dragLayer.animateViewIntoPosition(dragView, from.left, from.top, finalPos[0], 3263 finalPos[1], 1, 1, 1, scaleXY[0], scaleXY[1], onComplete, endStyle, 3264 duration, this); 3265 } 3266 } 3267 3268 public void setFinalTransitionTransform(CellLayout layout) { 3269 if (isSwitchingState()) { 3270 int index = indexOfChild(layout); 3271 mCurrentScaleX = layout.getScaleX(); 3272 mCurrentScaleY = layout.getScaleY(); 3273 mCurrentTranslationX = layout.getTranslationX(); 3274 mCurrentTranslationY = layout.getTranslationY(); 3275 mCurrentRotationY = layout.getRotationY(); 3276 layout.setScaleX(mNewScaleXs[index]); 3277 layout.setScaleY(mNewScaleYs[index]); 3278 layout.setTranslationX(mNewTranslationXs[index]); 3279 layout.setTranslationY(mNewTranslationYs[index]); 3280 layout.setRotationY(mNewRotationYs[index]); 3281 } 3282 } 3283 public void resetTransitionTransform(CellLayout layout) { 3284 if (isSwitchingState()) { 3285 mCurrentScaleX = layout.getScaleX(); 3286 mCurrentScaleY = layout.getScaleY(); 3287 mCurrentTranslationX = layout.getTranslationX(); 3288 mCurrentTranslationY = layout.getTranslationY(); 3289 mCurrentRotationY = layout.getRotationY(); 3290 layout.setScaleX(mCurrentScaleX); 3291 layout.setScaleY(mCurrentScaleY); 3292 layout.setTranslationX(mCurrentTranslationX); 3293 layout.setTranslationY(mCurrentTranslationY); 3294 layout.setRotationY(mCurrentRotationY); 3295 } 3296 } 3297 3298 /** 3299 * Return the current {@link CellLayout}, correctly picking the destination 3300 * screen while a scroll is in progress. 3301 */ 3302 public CellLayout getCurrentDropLayout() { 3303 return (CellLayout) getChildAt(getNextPage()); 3304 } 3305 3306 /** 3307 * Return the current CellInfo describing our current drag; this method exists 3308 * so that Launcher can sync this object with the correct info when the activity is created/ 3309 * destroyed 3310 * 3311 */ 3312 public CellLayout.CellInfo getDragInfo() { 3313 return mDragInfo; 3314 } 3315 3316 /** 3317 * Calculate the nearest cell where the given object would be dropped. 3318 * 3319 * pixelX and pixelY should be in the coordinate system of layout 3320 */ 3321 private int[] findNearestArea(int pixelX, int pixelY, 3322 int spanX, int spanY, CellLayout layout, int[] recycle) { 3323 return layout.findNearestArea( 3324 pixelX, pixelY, spanX, spanY, recycle); 3325 } 3326 3327 void setup(DragController dragController) { 3328 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3329 mDragController = dragController; 3330 3331 // hardware layers on children are enabled on startup, but should be disabled until 3332 // needed 3333 updateChildrenLayersEnabled(); 3334 setWallpaperDimension(); 3335 } 3336 3337 /** 3338 * Called at the end of a drag which originated on the workspace. 3339 */ 3340 public void onDropCompleted(View target, DragObject d, boolean isFlingToDelete, 3341 boolean success) { 3342 if (success) { 3343 if (target != this) { 3344 if (mDragInfo != null) { 3345 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 3346 if (mDragInfo.cell instanceof DropTarget) { 3347 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 3348 } 3349 } 3350 } 3351 } else if (mDragInfo != null) { 3352 CellLayout cellLayout; 3353 if (mLauncher.isHotseatLayout(target)) { 3354 cellLayout = mLauncher.getHotseat().getLayout(); 3355 } else { 3356 cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3357 } 3358 cellLayout.onDropChild(mDragInfo.cell); 3359 } 3360 if (d.cancelled && mDragInfo.cell != null) { 3361 mDragInfo.cell.setVisibility(VISIBLE); 3362 } 3363 mDragOutline = null; 3364 mDragInfo = null; 3365 3366 // Hide the scrolling indicator after you pick up an item 3367 hideScrollingIndicator(false); 3368 } 3369 3370 void updateItemLocationsInDatabase(CellLayout cl) { 3371 int count = cl.getShortcutsAndWidgets().getChildCount(); 3372 3373 int screen = indexOfChild(cl); 3374 int container = Favorites.CONTAINER_DESKTOP; 3375 3376 if (mLauncher.isHotseatLayout(cl)) { 3377 screen = -1; 3378 container = Favorites.CONTAINER_HOTSEAT; 3379 } 3380 3381 for (int i = 0; i < count; i++) { 3382 View v = cl.getShortcutsAndWidgets().getChildAt(i); 3383 ItemInfo info = (ItemInfo) v.getTag(); 3384 // Null check required as the AllApps button doesn't have an item info 3385 if (info != null) { 3386 LauncherModel.modifyItemInDatabase(mLauncher, info, container, screen, info.cellX, 3387 info.cellY, info.spanX, info.spanY); 3388 } 3389 } 3390 } 3391 3392 @Override 3393 public boolean supportsFlingToDelete() { 3394 return true; 3395 } 3396 3397 @Override 3398 public void onFlingToDelete(DragObject d, int x, int y, PointF vec) { 3399 // Do nothing 3400 } 3401 3402 @Override 3403 public void onFlingToDeleteCompleted() { 3404 // Do nothing 3405 } 3406 3407 public boolean isDropEnabled() { 3408 return true; 3409 } 3410 3411 @Override 3412 protected void onRestoreInstanceState(Parcelable state) { 3413 super.onRestoreInstanceState(state); 3414 Launcher.setScreen(mCurrentPage); 3415 } 3416 3417 @Override 3418 public void scrollLeft() { 3419 if (!isSmall() && !mIsSwitchingState) { 3420 super.scrollLeft(); 3421 } 3422 Folder openFolder = getOpenFolder(); 3423 if (openFolder != null) { 3424 openFolder.completeDragExit(); 3425 } 3426 } 3427 3428 @Override 3429 public void scrollRight() { 3430 if (!isSmall() && !mIsSwitchingState) { 3431 super.scrollRight(); 3432 } 3433 Folder openFolder = getOpenFolder(); 3434 if (openFolder != null) { 3435 openFolder.completeDragExit(); 3436 } 3437 } 3438 3439 @Override 3440 public boolean onEnterScrollArea(int x, int y, int direction) { 3441 // Ignore the scroll area if we are dragging over the hot seat 3442 boolean isPortrait = !LauncherApplication.isScreenLandscape(getContext()); 3443 if (mLauncher.getHotseat() != null && isPortrait) { 3444 Rect r = new Rect(); 3445 mLauncher.getHotseat().getHitRect(r); 3446 if (r.contains(x, y)) { 3447 return false; 3448 } 3449 } 3450 3451 boolean result = false; 3452 if (!isSmall() && !mIsSwitchingState) { 3453 mInScrollArea = true; 3454 3455 final int page = getNextPage() + 3456 (direction == DragController.SCROLL_LEFT ? -1 : 1); 3457 3458 // We always want to exit the current layout to ensure parity of enter / exit 3459 setCurrentDropLayout(null); 3460 3461 if (0 <= page && page < getChildCount()) { 3462 CellLayout layout = (CellLayout) getChildAt(page); 3463 setCurrentDragOverlappingLayout(layout); 3464 3465 // Workspace is responsible for drawing the edge glow on adjacent pages, 3466 // so we need to redraw the workspace when this may have changed. 3467 invalidate(); 3468 result = true; 3469 } 3470 } 3471 return result; 3472 } 3473 3474 @Override 3475 public boolean onExitScrollArea() { 3476 boolean result = false; 3477 if (mInScrollArea) { 3478 invalidate(); 3479 CellLayout layout = getCurrentDropLayout(); 3480 setCurrentDropLayout(layout); 3481 setCurrentDragOverlappingLayout(layout); 3482 3483 result = true; 3484 mInScrollArea = false; 3485 } 3486 return result; 3487 } 3488 3489 private void onResetScrollArea() { 3490 setCurrentDragOverlappingLayout(null); 3491 mInScrollArea = false; 3492 } 3493 3494 /** 3495 * Returns a specific CellLayout 3496 */ 3497 CellLayout getParentCellLayoutForView(View v) { 3498 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3499 for (CellLayout layout : layouts) { 3500 if (layout.getShortcutsAndWidgets().indexOfChild(v) > -1) { 3501 return layout; 3502 } 3503 } 3504 return null; 3505 } 3506 3507 /** 3508 * Returns a list of all the CellLayouts in the workspace. 3509 */ 3510 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3511 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3512 int screenCount = getChildCount(); 3513 for (int screen = 0; screen < screenCount; screen++) { 3514 layouts.add(((CellLayout) getChildAt(screen))); 3515 } 3516 if (mLauncher.getHotseat() != null) { 3517 layouts.add(mLauncher.getHotseat().getLayout()); 3518 } 3519 return layouts; 3520 } 3521 3522 /** 3523 * We should only use this to search for specific children. Do not use this method to modify 3524 * ShortcutsAndWidgetsContainer directly. Includes ShortcutAndWidgetContainers from 3525 * the hotseat and workspace pages 3526 */ 3527 ArrayList<ShortcutAndWidgetContainer> getAllShortcutAndWidgetContainers() { 3528 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3529 new ArrayList<ShortcutAndWidgetContainer>(); 3530 int screenCount = getChildCount(); 3531 for (int screen = 0; screen < screenCount; screen++) { 3532 childrenLayouts.add(((CellLayout) getChildAt(screen)).getShortcutsAndWidgets()); 3533 } 3534 if (mLauncher.getHotseat() != null) { 3535 childrenLayouts.add(mLauncher.getHotseat().getLayout().getShortcutsAndWidgets()); 3536 } 3537 return childrenLayouts; 3538 } 3539 3540 public Folder getFolderForTag(Object tag) { 3541 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3542 getAllShortcutAndWidgetContainers(); 3543 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3544 int count = layout.getChildCount(); 3545 for (int i = 0; i < count; i++) { 3546 View child = layout.getChildAt(i); 3547 if (child instanceof Folder) { 3548 Folder f = (Folder) child; 3549 if (f.getInfo() == tag && f.getInfo().opened) { 3550 return f; 3551 } 3552 } 3553 } 3554 } 3555 return null; 3556 } 3557 3558 public View getViewForTag(Object tag) { 3559 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3560 getAllShortcutAndWidgetContainers(); 3561 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3562 int count = layout.getChildCount(); 3563 for (int i = 0; i < count; i++) { 3564 View child = layout.getChildAt(i); 3565 if (child.getTag() == tag) { 3566 return child; 3567 } 3568 } 3569 } 3570 return null; 3571 } 3572 3573 void clearDropTargets() { 3574 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3575 getAllShortcutAndWidgetContainers(); 3576 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3577 int childCount = layout.getChildCount(); 3578 for (int j = 0; j < childCount; j++) { 3579 View v = layout.getChildAt(j); 3580 if (v instanceof DropTarget) { 3581 mDragController.removeDropTarget((DropTarget) v); 3582 } 3583 } 3584 } 3585 } 3586 3587 void removeItems(final ArrayList<ApplicationInfo> apps) { 3588 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3589 3590 final HashSet<String> packageNames = new HashSet<String>(); 3591 final int appCount = apps.size(); 3592 for (int i = 0; i < appCount; i++) { 3593 packageNames.add(apps.get(i).componentName.getPackageName()); 3594 } 3595 3596 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3597 for (final CellLayout layoutParent: cellLayouts) { 3598 final ViewGroup layout = layoutParent.getShortcutsAndWidgets(); 3599 3600 // Avoid ANRs by treating each screen separately 3601 post(new Runnable() { 3602 public void run() { 3603 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3604 childrenToRemove.clear(); 3605 3606 int childCount = layout.getChildCount(); 3607 for (int j = 0; j < childCount; j++) { 3608 final View view = layout.getChildAt(j); 3609 Object tag = view.getTag(); 3610 3611 if (tag instanceof ShortcutInfo) { 3612 final ShortcutInfo info = (ShortcutInfo) tag; 3613 final Intent intent = info.intent; 3614 final ComponentName name = intent.getComponent(); 3615 3616 if (name != null) { 3617 for (String packageName: packageNames) { 3618 if (packageName.equals(name.getPackageName())) { 3619 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3620 childrenToRemove.add(view); 3621 } 3622 } 3623 } 3624 } else if (tag instanceof FolderInfo) { 3625 final FolderInfo info = (FolderInfo) tag; 3626 final ArrayList<ShortcutInfo> contents = info.contents; 3627 final int contentsCount = contents.size(); 3628 final ArrayList<ShortcutInfo> appsToRemoveFromFolder = 3629 new ArrayList<ShortcutInfo>(); 3630 3631 for (int k = 0; k < contentsCount; k++) { 3632 final ShortcutInfo appInfo = contents.get(k); 3633 final Intent intent = appInfo.intent; 3634 final ComponentName name = intent.getComponent(); 3635 3636 if (name != null) { 3637 for (String packageName: packageNames) { 3638 if (packageName.equals(name.getPackageName())) { 3639 appsToRemoveFromFolder.add(appInfo); 3640 } 3641 } 3642 } 3643 } 3644 for (ShortcutInfo item: appsToRemoveFromFolder) { 3645 info.remove(item); 3646 LauncherModel.deleteItemFromDatabase(mLauncher, item); 3647 } 3648 } else if (tag instanceof LauncherAppWidgetInfo) { 3649 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3650 final ComponentName provider = info.providerName; 3651 if (provider != null) { 3652 for (String packageName: packageNames) { 3653 if (packageName.equals(provider.getPackageName())) { 3654 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3655 childrenToRemove.add(view); 3656 } 3657 } 3658 } 3659 } 3660 } 3661 3662 childCount = childrenToRemove.size(); 3663 for (int j = 0; j < childCount; j++) { 3664 View child = childrenToRemove.get(j); 3665 // Note: We can not remove the view directly from CellLayoutChildren as this 3666 // does not re-mark the spaces as unoccupied. 3667 layoutParent.removeViewInLayout(child); 3668 if (child instanceof DropTarget) { 3669 mDragController.removeDropTarget((DropTarget)child); 3670 } 3671 } 3672 3673 if (childCount > 0) { 3674 layout.requestLayout(); 3675 layout.invalidate(); 3676 } 3677 } 3678 }); 3679 } 3680 } 3681 3682 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3683 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = getAllShortcutAndWidgetContainers(); 3684 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3685 int childCount = layout.getChildCount(); 3686 for (int j = 0; j < childCount; j++) { 3687 final View view = layout.getChildAt(j); 3688 Object tag = view.getTag(); 3689 if (tag instanceof ShortcutInfo) { 3690 ShortcutInfo info = (ShortcutInfo) tag; 3691 // We need to check for ACTION_MAIN otherwise getComponent() might 3692 // return null for some shortcuts (for instance, for shortcuts to 3693 // web pages.) 3694 final Intent intent = info.intent; 3695 final ComponentName name = intent.getComponent(); 3696 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3697 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3698 final int appCount = apps.size(); 3699 for (int k = 0; k < appCount; k++) { 3700 ApplicationInfo app = apps.get(k); 3701 if (app.componentName.equals(name)) { 3702 BubbleTextView shortcut = (BubbleTextView) view; 3703 info.updateIcon(mIconCache); 3704 info.title = app.title.toString(); 3705 shortcut.applyFromShortcutInfo(info, mIconCache); 3706 } 3707 } 3708 } 3709 } 3710 } 3711 } 3712 } 3713 3714 void moveToDefaultScreen(boolean animate) { 3715 if (!isSmall()) { 3716 if (animate) { 3717 snapToPage(mDefaultPage); 3718 } else { 3719 setCurrentPage(mDefaultPage); 3720 } 3721 } 3722 getChildAt(mDefaultPage).requestFocus(); 3723 } 3724 3725 @Override 3726 public void syncPages() { 3727 } 3728 3729 @Override 3730 public void syncPageItems(int page, boolean immediate) { 3731 } 3732 3733 @Override 3734 protected String getCurrentPageDescription() { 3735 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 3736 return String.format(getContext().getString(R.string.workspace_scroll_format), 3737 page + 1, getChildCount()); 3738 } 3739 3740 public void getLocationInDragLayer(int[] loc) { 3741 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 3742 } 3743 3744 void setFadeForOverScroll(float fade) { 3745 if (!isScrollingIndicatorEnabled()) return; 3746 3747 mOverscrollFade = fade; 3748 float reducedFade = 0.5f + 0.5f * (1 - fade); 3749 final ViewGroup parent = (ViewGroup) getParent(); 3750 final ImageView qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3751 final ImageView dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3752 final View scrollIndicator = getScrollingIndicator(); 3753 3754 cancelScrollingIndicatorAnimations(); 3755 if (qsbDivider != null) qsbDivider.setAlpha(reducedFade); 3756 if (dockDivider != null) dockDivider.setAlpha(reducedFade); 3757 scrollIndicator.setAlpha(1 - fade); 3758 } 3759} 3760