Workspace.java revision 2efec4e29f80db4293664d3ed4a89d37454510e1
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.launcher2; 18 19import android.animation.Animator; 20import android.animation.AnimatorSet; 21import android.animation.ObjectAnimator; 22import android.animation.TimeInterpolator; 23import android.animation.ValueAnimator; 24import android.animation.ValueAnimator.AnimatorUpdateListener; 25import android.app.WallpaperManager; 26import android.appwidget.AppWidgetHostView; 27import android.appwidget.AppWidgetManager; 28import android.appwidget.AppWidgetProviderInfo; 29import android.content.ComponentName; 30import android.content.Context; 31import android.content.Intent; 32import android.content.SharedPreferences; 33import android.content.res.Resources; 34import android.content.res.TypedArray; 35import android.graphics.Bitmap; 36import android.graphics.Camera; 37import android.graphics.Canvas; 38import android.graphics.Matrix; 39import android.graphics.Paint; 40import android.graphics.Point; 41import android.graphics.PointF; 42import android.graphics.Rect; 43import android.graphics.Region.Op; 44import android.graphics.drawable.Drawable; 45import android.os.IBinder; 46import android.os.Parcelable; 47import android.util.AttributeSet; 48import android.util.DisplayMetrics; 49import android.util.Log; 50import android.view.Display; 51import android.view.MotionEvent; 52import android.view.View; 53import android.view.ViewGroup; 54import android.view.animation.DecelerateInterpolator; 55import android.widget.ImageView; 56import android.widget.TextView; 57 58import com.android.launcher.R; 59import com.android.launcher2.FolderIcon.FolderRingAnimator; 60import com.android.launcher2.LauncherSettings.Favorites; 61 62import java.net.URISyntaxException; 63import java.util.ArrayList; 64import java.util.HashSet; 65import java.util.Iterator; 66import java.util.Set; 67 68/** 69 * The workspace is a wide area with a wallpaper and a finite number of pages. 70 * Each page contains a number of icons, folders or widgets the user can 71 * interact with. A workspace is meant to be used with a fixed width only. 72 */ 73public class Workspace extends SmoothPagedView 74 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 75 DragController.DragListener, LauncherTransitionable, ViewGroup.OnHierarchyChangeListener { 76 private static final String TAG = "Launcher.Workspace"; 77 78 // Y rotation to apply to the workspace screens 79 private static final float WORKSPACE_ROTATION = 12.5f; 80 private static final float WORKSPACE_OVERSCROLL_ROTATION = 24f; 81 private static float CAMERA_DISTANCE = 6500; 82 83 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 84 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 85 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 86 87 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 88 private static final int ADJACENT_SCREEN_DROP_DURATION = 300; 89 private static final int FLING_THRESHOLD_VELOCITY = 500; 90 91 private float mMaxDistanceForFolderCreation; 92 93 // These animators are used to fade the children's outlines 94 private ObjectAnimator mChildrenOutlineFadeInAnimation; 95 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 96 private float mChildrenOutlineAlpha = 0; 97 98 // These properties refer to the background protection gradient used for AllApps and Customize 99 private ValueAnimator mBackgroundFadeInAnimation; 100 private ValueAnimator mBackgroundFadeOutAnimation; 101 private Drawable mBackground; 102 boolean mDrawBackground = true; 103 private float mBackgroundAlpha = 0; 104 private float mOverScrollMaxBackgroundAlpha = 0.0f; 105 private int mOverScrollPageIndex = -1; 106 107 private float mWallpaperScrollRatio = 1.0f; 108 109 private final WallpaperManager mWallpaperManager; 110 private IBinder mWindowToken; 111 private static final float WALLPAPER_SCREENS_SPAN = 2f; 112 113 private int mDefaultPage; 114 115 /** 116 * CellInfo for the cell that is currently being dragged 117 */ 118 private CellLayout.CellInfo mDragInfo; 119 120 /** 121 * Target drop area calculated during last acceptDrop call. 122 */ 123 private int[] mTargetCell = new int[2]; 124 private int mDragOverX = -1; 125 private int mDragOverY = -1; 126 127 static Rect mLandscapeCellLayoutMetrics = null; 128 static Rect mPortraitCellLayoutMetrics = null; 129 130 /** 131 * The CellLayout that is currently being dragged over 132 */ 133 private CellLayout mDragTargetLayout = null; 134 /** 135 * The CellLayout that we will show as glowing 136 */ 137 private CellLayout mDragOverlappingLayout = null; 138 139 /** 140 * The CellLayout which will be dropped to 141 */ 142 private CellLayout mDropToLayout = null; 143 144 private Launcher mLauncher; 145 private IconCache mIconCache; 146 private DragController mDragController; 147 148 // These are temporary variables to prevent having to allocate a new object just to 149 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 150 private int[] mTempCell = new int[2]; 151 private int[] mTempEstimate = new int[2]; 152 private float[] mDragViewVisualCenter = new float[2]; 153 private float[] mTempDragCoordinates = new float[2]; 154 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 155 private float[] mTempDragBottomRightCoordinates = new float[2]; 156 private Matrix mTempInverseMatrix = new Matrix(); 157 158 private SpringLoadedDragController mSpringLoadedDragController; 159 private float mSpringLoadedShrinkFactor; 160 161 private static final int DEFAULT_CELL_COUNT_X = 4; 162 private static final int DEFAULT_CELL_COUNT_Y = 4; 163 164 // State variable that indicates whether the pages are small (ie when you're 165 // in all apps or customize mode) 166 167 enum State { NORMAL, SPRING_LOADED, SMALL }; 168 private State mState = State.NORMAL; 169 private boolean mIsSwitchingState = false; 170 171 boolean mAnimatingViewIntoPlace = false; 172 boolean mIsDragOccuring = false; 173 boolean mChildrenLayersEnabled = true; 174 175 /** Is the user is dragging an item near the edge of a page? */ 176 private boolean mInScrollArea = false; 177 178 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 179 private Bitmap mDragOutline = null; 180 private final Rect mTempRect = new Rect(); 181 private final int[] mTempXY = new int[2]; 182 private float mOverscrollFade = 0; 183 private boolean mOverscrollTransformsSet; 184 public static final int DRAG_BITMAP_PADDING = 2; 185 186 // Camera and Matrix used to determine the final position of a neighboring CellLayout 187 private final Matrix mMatrix = new Matrix(); 188 private final Camera mCamera = new Camera(); 189 private final float mTempFloat2[] = new float[2]; 190 191 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 192 int mWallpaperWidth; 193 int mWallpaperHeight; 194 WallpaperOffsetInterpolator mWallpaperOffset; 195 boolean mUpdateWallpaperOffsetImmediately = false; 196 private Runnable mDelayedResizeRunnable; 197 private Runnable mDelayedSnapToPageRunnable; 198 private Point mDisplaySize = new Point(); 199 private boolean mIsStaticWallpaper; 200 private int mWallpaperTravelWidth; 201 202 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 203 private static final int FOLDER_CREATION_TIMEOUT = 0; 204 private static final int REORDER_TIMEOUT = 250; 205 private final Alarm mFolderCreationAlarm = new Alarm(); 206 private final Alarm mReorderAlarm = new Alarm(); 207 private FolderRingAnimator mDragFolderRingAnimator = null; 208 private FolderIcon mDragOverFolderIcon = null; 209 private boolean mCreateUserFolderOnDrop = false; 210 private boolean mAddToExistingFolderOnDrop = false; 211 private DropTarget.DragEnforcer mDragEnforcer; 212 213 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 214 private float mXDown; 215 private float mYDown; 216 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 217 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 218 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 219 220 // Relating to the animation of items being dropped externally 221 public static final int ANIMATE_INTO_POSITION_AND_DISAPPEAR = 0; 222 public static final int ANIMATE_INTO_POSITION_AND_REMAIN = 1; 223 public static final int ANIMATE_INTO_POSITION_AND_RESIZE = 2; 224 public static final int COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION = 3; 225 public static final int CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION = 4; 226 227 // Related to dragging, folder creation and reordering 228 private static final int DRAG_MODE_NONE = 0; 229 private static final int DRAG_MODE_CREATE_FOLDER = 1; 230 private static final int DRAG_MODE_ADD_TO_FOLDER = 2; 231 private static final int DRAG_MODE_REORDER = 3; 232 private int mDragMode = DRAG_MODE_NONE; 233 private int mLastReorderX = -1; 234 private int mLastReorderY = -1; 235 236 // These variables are used for storing the initial and final values during workspace animations 237 private int mSavedScrollX; 238 private float mSavedRotationY; 239 private float mSavedTranslationX; 240 private float mCurrentScaleX; 241 private float mCurrentScaleY; 242 private float mCurrentRotationY; 243 private float mCurrentTranslationX; 244 private float mCurrentTranslationY; 245 private float[] mOldTranslationXs; 246 private float[] mOldTranslationYs; 247 private float[] mOldScaleXs; 248 private float[] mOldScaleYs; 249 private float[] mOldBackgroundAlphas; 250 private float[] mOldBackgroundAlphaMultipliers; 251 private float[] mOldAlphas; 252 private float[] mOldRotationYs; 253 private float[] mNewTranslationXs; 254 private float[] mNewTranslationYs; 255 private float[] mNewScaleXs; 256 private float[] mNewScaleYs; 257 private float[] mNewBackgroundAlphas; 258 private float[] mNewBackgroundAlphaMultipliers; 259 private float[] mNewAlphas; 260 private float[] mNewRotationYs; 261 private float mTransitionProgress; 262 263 /** 264 * Used to inflate the Workspace from XML. 265 * 266 * @param context The application's context. 267 * @param attrs The attributes set containing the Workspace's customization values. 268 */ 269 public Workspace(Context context, AttributeSet attrs) { 270 this(context, attrs, 0); 271 } 272 273 /** 274 * Used to inflate the Workspace from XML. 275 * 276 * @param context The application's context. 277 * @param attrs The attributes set containing the Workspace's customization values. 278 * @param defStyle Unused. 279 */ 280 public Workspace(Context context, AttributeSet attrs, int defStyle) { 281 super(context, attrs, defStyle); 282 mContentIsRefreshable = false; 283 284 mDragEnforcer = new DropTarget.DragEnforcer(context); 285 // With workspace, data is available straight from the get-go 286 setDataIsReady(); 287 288 final Resources res = getResources(); 289 mFadeInAdjacentScreens = res.getBoolean(R.bool.config_workspaceFadeAdjacentScreens); 290 mWallpaperManager = WallpaperManager.getInstance(context); 291 292 int cellCountX = DEFAULT_CELL_COUNT_X; 293 int cellCountY = DEFAULT_CELL_COUNT_Y; 294 295 TypedArray a = context.obtainStyledAttributes(attrs, 296 R.styleable.Workspace, defStyle, 0); 297 298 if (LauncherApplication.isScreenLarge()) { 299 // Determine number of rows/columns dynamically 300 // TODO: This code currently fails on tablets with an aspect ratio < 1.3. 301 // Around that ratio we should make cells the same size in portrait and 302 // landscape 303 TypedArray actionBarSizeTypedArray = 304 context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize }); 305 DisplayMetrics displayMetrics = res.getDisplayMetrics(); 306 final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); 307 final float systemBarHeight = res.getDimension(R.dimen.status_bar_height); 308 final float smallestScreenDim = res.getConfiguration().smallestScreenWidthDp * 309 displayMetrics.density; 310 311 cellCountX = 1; 312 while (CellLayout.widthInPortrait(res, cellCountX + 1) <= smallestScreenDim) { 313 cellCountX++; 314 } 315 316 cellCountY = 1; 317 while (actionBarHeight + CellLayout.heightInLandscape(res, cellCountY + 1) 318 <= smallestScreenDim - systemBarHeight) { 319 cellCountY++; 320 } 321 } 322 323 mSpringLoadedShrinkFactor = 324 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 325 326 // if the value is manually specified, use that instead 327 cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX); 328 cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY); 329 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 330 a.recycle(); 331 332 setOnHierarchyChangeListener(this); 333 334 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 335 setHapticFeedbackEnabled(false); 336 337 mLauncher = (Launcher) context; 338 initWorkspace(); 339 340 // Disable multitouch across the workspace/all apps/customize tray 341 setMotionEventSplittingEnabled(true); 342 } 343 344 // estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each 345 // dimension if unsuccessful 346 public int[] estimateItemSize(int hSpan, int vSpan, 347 ItemInfo itemInfo, boolean springLoaded) { 348 int[] size = new int[2]; 349 if (getChildCount() > 0) { 350 CellLayout cl = (CellLayout) mLauncher.getWorkspace().getChildAt(0); 351 Rect r = estimateItemPosition(cl, itemInfo, 0, 0, hSpan, vSpan); 352 size[0] = r.width(); 353 size[1] = r.height(); 354 if (springLoaded) { 355 size[0] *= mSpringLoadedShrinkFactor; 356 size[1] *= mSpringLoadedShrinkFactor; 357 } 358 return size; 359 } else { 360 size[0] = Integer.MAX_VALUE; 361 size[1] = Integer.MAX_VALUE; 362 return size; 363 } 364 } 365 public Rect estimateItemPosition(CellLayout cl, ItemInfo pendingInfo, 366 int hCell, int vCell, int hSpan, int vSpan) { 367 Rect r = new Rect(); 368 cl.cellToRect(hCell, vCell, hSpan, vSpan, r); 369 return r; 370 } 371 372 public void buildPageHardwareLayers() { 373 if (getWindowToken() != null) { 374 final int childCount = getChildCount(); 375 for (int i = 0; i < childCount; i++) { 376 CellLayout cl = (CellLayout) getChildAt(i); 377 cl.getShortcutsAndWidgets().buildLayer(); 378 } 379 } 380 } 381 382 public void onDragStart(DragSource source, Object info, int dragAction) { 383 mIsDragOccuring = true; 384 updateChildrenLayersEnabled(); 385 mLauncher.lockScreenOrientation(); 386 } 387 388 public void onDragEnd() { 389 mIsDragOccuring = false; 390 updateChildrenLayersEnabled(); 391 mLauncher.unlockScreenOrientation(false); 392 } 393 394 /** 395 * Initializes various states for this workspace. 396 */ 397 protected void initWorkspace() { 398 Context context = getContext(); 399 mCurrentPage = mDefaultPage; 400 Launcher.setScreen(mCurrentPage); 401 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 402 mIconCache = app.getIconCache(); 403 setWillNotDraw(false); 404 setChildrenDrawnWithCacheEnabled(true); 405 406 final Resources res = getResources(); 407 try { 408 mBackground = res.getDrawable(R.drawable.apps_customize_bg); 409 } catch (Resources.NotFoundException e) { 410 // In this case, we will skip drawing background protection 411 } 412 413 mWallpaperOffset = new WallpaperOffsetInterpolator(); 414 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 415 display.getSize(mDisplaySize); 416 mWallpaperTravelWidth = (int) (mDisplaySize.x * 417 wallpaperTravelToScreenWidthRatio(mDisplaySize.x, mDisplaySize.y)); 418 419 mMaxDistanceForFolderCreation = (0.6f * res.getDimensionPixelSize(R.dimen.app_icon_size)); 420 mFlingThresholdVelocity = (int) (FLING_THRESHOLD_VELOCITY * mDensity); 421 } 422 423 @Override 424 protected int getScrollMode() { 425 return SmoothPagedView.X_LARGE_MODE; 426 } 427 428 @Override 429 public void onChildViewAdded(View parent, View child) { 430 if (!(child instanceof CellLayout)) { 431 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 432 } 433 CellLayout cl = ((CellLayout) child); 434 cl.setOnInterceptTouchListener(this); 435 cl.setClickable(true); 436 cl.enableHardwareLayers(); 437 } 438 439 @Override 440 public void onChildViewRemoved(View parent, View child) { 441 } 442 443 /** 444 * @return The open folder on the current screen, or null if there is none 445 */ 446 Folder getOpenFolder() { 447 DragLayer dragLayer = mLauncher.getDragLayer(); 448 int count = dragLayer.getChildCount(); 449 for (int i = 0; i < count; i++) { 450 View child = dragLayer.getChildAt(i); 451 if (child instanceof Folder) { 452 Folder folder = (Folder) child; 453 if (folder.getInfo().opened) 454 return folder; 455 } 456 } 457 return null; 458 } 459 460 boolean isTouchActive() { 461 return mTouchState != TOUCH_STATE_REST; 462 } 463 464 /** 465 * Adds the specified child in the specified screen. The position and dimension of 466 * the child are defined by x, y, spanX and spanY. 467 * 468 * @param child The child to add in one of the workspace's screens. 469 * @param screen The screen in which to add the child. 470 * @param x The X position of the child in the screen's grid. 471 * @param y The Y position of the child in the screen's grid. 472 * @param spanX The number of cells spanned horizontally by the child. 473 * @param spanY The number of cells spanned vertically by the child. 474 */ 475 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY) { 476 addInScreen(child, container, screen, x, y, spanX, spanY, false); 477 } 478 479 /** 480 * Adds the specified child in the specified screen. The position and dimension of 481 * the child are defined by x, y, spanX and spanY. 482 * 483 * @param child The child to add in one of the workspace's screens. 484 * @param screen The screen in which to add the child. 485 * @param x The X position of the child in the screen's grid. 486 * @param y The Y position of the child in the screen's grid. 487 * @param spanX The number of cells spanned horizontally by the child. 488 * @param spanY The number of cells spanned vertically by the child. 489 * @param insert When true, the child is inserted at the beginning of the children list. 490 */ 491 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY, 492 boolean insert) { 493 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 494 if (screen < 0 || screen >= getChildCount()) { 495 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 496 + " (was " + screen + "); skipping child"); 497 return; 498 } 499 } 500 501 final CellLayout layout; 502 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 503 layout = mLauncher.getHotseat().getLayout(); 504 child.setOnKeyListener(null); 505 506 // Hide folder title in the hotseat 507 if (child instanceof FolderIcon) { 508 ((FolderIcon) child).setTextVisible(false); 509 } 510 511 if (screen < 0) { 512 screen = mLauncher.getHotseat().getOrderInHotseat(x, y); 513 } else { 514 // Note: We do this to ensure that the hotseat is always laid out in the orientation 515 // of the hotseat in order regardless of which orientation they were added 516 x = mLauncher.getHotseat().getCellXFromOrder(screen); 517 y = mLauncher.getHotseat().getCellYFromOrder(screen); 518 } 519 } else { 520 // Show folder title if not in the hotseat 521 if (child instanceof FolderIcon) { 522 ((FolderIcon) child).setTextVisible(true); 523 } 524 525 layout = (CellLayout) getChildAt(screen); 526 child.setOnKeyListener(new IconKeyEventListener()); 527 } 528 529 LayoutParams genericLp = child.getLayoutParams(); 530 CellLayout.LayoutParams lp; 531 if (genericLp == null || !(genericLp instanceof CellLayout.LayoutParams)) { 532 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 533 } else { 534 lp = (CellLayout.LayoutParams) genericLp; 535 lp.cellX = x; 536 lp.cellY = y; 537 lp.cellHSpan = spanX; 538 lp.cellVSpan = spanY; 539 } 540 541 if (spanX < 0 && spanY < 0) { 542 lp.isLockedToGrid = false; 543 } 544 545 // Get the canonical child id to uniquely represent this view in this screen 546 int childId = LauncherModel.getCellLayoutChildId(container, screen, x, y, spanX, spanY); 547 boolean markCellsAsOccupied = !(child instanceof Folder); 548 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 549 // TODO: This branch occurs when the workspace is adding views 550 // outside of the defined grid 551 // maybe we should be deleting these items from the LauncherModel? 552 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 553 } 554 555 if (!(child instanceof Folder)) { 556 child.setHapticFeedbackEnabled(false); 557 child.setOnLongClickListener(mLongClickListener); 558 } 559 if (child instanceof DropTarget) { 560 mDragController.addDropTarget((DropTarget) child); 561 } 562 } 563 564 /** 565 * Check if the point (x, y) hits a given page. 566 */ 567 private boolean hitsPage(int index, float x, float y) { 568 final View page = getChildAt(index); 569 if (page != null) { 570 float[] localXY = { x, y }; 571 mapPointFromSelfToChild(page, localXY); 572 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 573 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 574 } 575 return false; 576 } 577 578 @Override 579 protected boolean hitsPreviousPage(float x, float y) { 580 // mNextPage is set to INVALID_PAGE whenever we are stationary. 581 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 582 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 583 584 // Only allow tap to next page on large devices, where there's significant margin outside 585 // the active workspace 586 return LauncherApplication.isScreenLarge() && hitsPage(current - 1, x, y); 587 } 588 589 @Override 590 protected boolean hitsNextPage(float x, float y) { 591 // mNextPage is set to INVALID_PAGE whenever we are stationary. 592 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 593 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 594 595 // Only allow tap to next page on large devices, where there's significant margin outside 596 // the active workspace 597 return LauncherApplication.isScreenLarge() && hitsPage(current + 1, x, y); 598 } 599 600 /** 601 * Called directly from a CellLayout (not by the framework), after we've been added as a 602 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 603 * that it should intercept touch events, which is not something that is normally supported. 604 */ 605 @Override 606 public boolean onTouch(View v, MotionEvent event) { 607 return (isSmall() || !isFinishedSwitchingState()); 608 } 609 610 public boolean isSwitchingState() { 611 return mIsSwitchingState; 612 } 613 614 /** This differs from isSwitchingState in that we take into account how far the transition 615 * has completed. */ 616 public boolean isFinishedSwitchingState() { 617 return !mIsSwitchingState || (mTransitionProgress > 0.5f); 618 } 619 620 protected void onWindowVisibilityChanged (int visibility) { 621 mLauncher.onWindowVisibilityChanged(visibility); 622 } 623 624 @Override 625 public boolean dispatchUnhandledMove(View focused, int direction) { 626 if (isSmall() || !isFinishedSwitchingState()) { 627 // when the home screens are shrunken, shouldn't allow side-scrolling 628 return false; 629 } 630 return super.dispatchUnhandledMove(focused, direction); 631 } 632 633 @Override 634 public boolean onInterceptTouchEvent(MotionEvent ev) { 635 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 636 case MotionEvent.ACTION_DOWN: 637 mXDown = ev.getX(); 638 mYDown = ev.getY(); 639 break; 640 case MotionEvent.ACTION_POINTER_UP: 641 case MotionEvent.ACTION_UP: 642 if (mTouchState == TOUCH_STATE_REST) { 643 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 644 if (!currentPage.lastDownOnOccupiedCell()) { 645 onWallpaperTap(ev); 646 } 647 } 648 } 649 return super.onInterceptTouchEvent(ev); 650 } 651 652 @Override 653 protected void determineScrollingStart(MotionEvent ev) { 654 if (isSmall()) return; 655 if (!isFinishedSwitchingState()) return; 656 657 float deltaX = Math.abs(ev.getX() - mXDown); 658 float deltaY = Math.abs(ev.getY() - mYDown); 659 660 if (Float.compare(deltaX, 0f) == 0) return; 661 662 float slope = deltaY / deltaX; 663 float theta = (float) Math.atan(slope); 664 665 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 666 cancelCurrentPageLongPress(); 667 } 668 669 if (theta > MAX_SWIPE_ANGLE) { 670 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 671 return; 672 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 673 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 674 // increase the touch slop to make it harder to begin scrolling the workspace. This 675 // results in vertically scrolling widgets to more easily. The higher the angle, the 676 // more we increase touch slop. 677 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 678 float extraRatio = (float) 679 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 680 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 681 } else { 682 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 683 super.determineScrollingStart(ev); 684 } 685 } 686 687 @Override 688 protected boolean isScrollingIndicatorEnabled() { 689 return super.isScrollingIndicatorEnabled() && (mState != State.SPRING_LOADED); 690 } 691 692 protected void onPageBeginMoving() { 693 super.onPageBeginMoving(); 694 695 if (isHardwareAccelerated()) { 696 updateChildrenLayersEnabled(); 697 } else { 698 if (mNextPage != INVALID_PAGE) { 699 // we're snapping to a particular screen 700 enableChildrenCache(mCurrentPage, mNextPage); 701 } else { 702 // this is when user is actively dragging a particular screen, they might 703 // swipe it either left or right (but we won't advance by more than one screen) 704 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 705 } 706 } 707 708 // Only show page outlines as we pan if we are on large screen 709 if (LauncherApplication.isScreenLarge()) { 710 showOutlines(); 711 mIsStaticWallpaper = mWallpaperManager.getWallpaperInfo() == null; 712 } 713 714 // If we are not fading in adjacent screens, we still need to restore the alpha in case the 715 // user scrolls while we are transitioning (should not affect dispatchDraw optimizations) 716 if (!mFadeInAdjacentScreens) { 717 for (int i = 0; i < getChildCount(); ++i) { 718 ((CellLayout) getPageAt(i)).setShortcutAndWidgetAlpha(1f); 719 } 720 } 721 722 // Show the scroll indicator as you pan the page 723 showScrollingIndicator(false); 724 } 725 726 protected void onPageEndMoving() { 727 super.onPageEndMoving(); 728 729 if (isHardwareAccelerated()) { 730 updateChildrenLayersEnabled(); 731 } else { 732 clearChildrenCache(); 733 } 734 735 736 if (mDragController.isDragging()) { 737 if (isSmall()) { 738 // If we are in springloaded mode, then force an event to check if the current touch 739 // is under a new page (to scroll to) 740 mDragController.forceMoveEvent(); 741 } 742 } else { 743 // If we are not mid-dragging, hide the page outlines if we are on a large screen 744 if (LauncherApplication.isScreenLarge()) { 745 hideOutlines(); 746 } 747 748 // Hide the scroll indicator as you pan the page 749 if (!mDragController.isDragging()) { 750 hideScrollingIndicator(false); 751 } 752 } 753 mOverScrollMaxBackgroundAlpha = 0.0f; 754 mOverScrollPageIndex = -1; 755 756 if (mDelayedResizeRunnable != null) { 757 mDelayedResizeRunnable.run(); 758 mDelayedResizeRunnable = null; 759 } 760 761 if (mDelayedSnapToPageRunnable != null) { 762 mDelayedSnapToPageRunnable.run(); 763 mDelayedSnapToPageRunnable = null; 764 } 765 } 766 767 @Override 768 protected void notifyPageSwitchListener() { 769 super.notifyPageSwitchListener(); 770 Launcher.setScreen(mCurrentPage); 771 }; 772 773 // As a ratio of screen height, the total distance we want the parallax effect to span 774 // horizontally 775 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 776 float aspectRatio = width / (float) height; 777 778 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 779 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 780 // We will use these two data points to extrapolate how much the wallpaper parallax effect 781 // to span (ie travel) at any aspect ratio: 782 783 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 784 final float ASPECT_RATIO_PORTRAIT = 10/16f; 785 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 786 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 787 788 // To find out the desired width at different aspect ratios, we use the following two 789 // formulas, where the coefficient on x is the aspect ratio (width/height): 790 // (16/10)x + y = 1.5 791 // (10/16)x + y = 1.2 792 // We solve for x and y and end up with a final formula: 793 final float x = 794 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 795 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 796 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 797 return x * aspectRatio + y; 798 } 799 800 // The range of scroll values for Workspace 801 private int getScrollRange() { 802 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 803 } 804 805 protected void setWallpaperDimension() { 806 DisplayMetrics displayMetrics = new DisplayMetrics(); 807 mLauncher.getWindowManager().getDefaultDisplay().getRealMetrics(displayMetrics); 808 final int maxDim = Math.max(displayMetrics.widthPixels, displayMetrics.heightPixels); 809 final int minDim = Math.min(displayMetrics.widthPixels, displayMetrics.heightPixels); 810 811 // We need to ensure that there is enough extra space in the wallpaper for the intended 812 // parallax effects 813 if (LauncherApplication.isScreenLarge()) { 814 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 815 mWallpaperHeight = maxDim; 816 } else { 817 mWallpaperWidth = Math.max((int) (minDim * WALLPAPER_SCREENS_SPAN), maxDim); 818 mWallpaperHeight = maxDim; 819 } 820 new Thread("setWallpaperDimension") { 821 public void run() { 822 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 823 } 824 }.start(); 825 } 826 827 private float wallpaperOffsetForCurrentScroll() { 828 // Set wallpaper offset steps (1 / (number of screens - 1)) 829 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f); 830 831 // For the purposes of computing the scrollRange and overScrollOffset, we assume 832 // that mLayoutScale is 1. This means that when we're in spring-loaded mode, 833 // there's no discrepancy between the wallpaper offset for a given page. 834 float layoutScale = mLayoutScale; 835 mLayoutScale = 1f; 836 int scrollRange = getScrollRange(); 837 838 // Again, we adjust the wallpaper offset to be consistent between values of mLayoutScale 839 float adjustedScrollX = Math.max(0, Math.min(getScrollX(), mMaxScrollX)); 840 adjustedScrollX *= mWallpaperScrollRatio; 841 mLayoutScale = layoutScale; 842 843 float scrollProgress = 844 adjustedScrollX / (float) scrollRange; 845 846 if (LauncherApplication.isScreenLarge() && mIsStaticWallpaper) { 847 // The wallpaper travel width is how far, from left to right, the wallpaper will move 848 // at this orientation. On tablets in portrait mode we don't move all the way to the 849 // edges of the wallpaper, or otherwise the parallax effect would be too strong. 850 int wallpaperTravelWidth = Math.min(mWallpaperTravelWidth, mWallpaperWidth); 851 852 float offsetInDips = wallpaperTravelWidth * scrollProgress + 853 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 854 float offset = offsetInDips / (float) mWallpaperWidth; 855 return offset; 856 } else { 857 return scrollProgress; 858 } 859 } 860 861 private void syncWallpaperOffsetWithScroll() { 862 final boolean enableWallpaperEffects = isHardwareAccelerated(); 863 if (enableWallpaperEffects) { 864 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 865 } 866 } 867 868 public void updateWallpaperOffsetImmediately() { 869 mUpdateWallpaperOffsetImmediately = true; 870 } 871 872 private void updateWallpaperOffsets() { 873 boolean updateNow = false; 874 boolean keepUpdating = true; 875 if (mUpdateWallpaperOffsetImmediately) { 876 updateNow = true; 877 keepUpdating = false; 878 mWallpaperOffset.jumpToFinal(); 879 mUpdateWallpaperOffsetImmediately = false; 880 } else { 881 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 882 } 883 if (updateNow) { 884 if (mWindowToken != null) { 885 mWallpaperManager.setWallpaperOffsets(mWindowToken, 886 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 887 } 888 } 889 if (keepUpdating) { 890 invalidate(); 891 } 892 } 893 894 @Override 895 protected void updateCurrentPageScroll() { 896 super.updateCurrentPageScroll(); 897 computeWallpaperScrollRatio(mCurrentPage); 898 } 899 900 @Override 901 protected void snapToPage(int whichPage) { 902 super.snapToPage(whichPage); 903 computeWallpaperScrollRatio(whichPage); 904 } 905 906 @Override 907 protected void snapToPage(int whichPage, int duration) { 908 super.snapToPage(whichPage, duration); 909 computeWallpaperScrollRatio(whichPage); 910 } 911 912 protected void snapToPage(int whichPage, Runnable r) { 913 if (mDelayedSnapToPageRunnable != null) { 914 mDelayedSnapToPageRunnable.run(); 915 } 916 mDelayedSnapToPageRunnable = r; 917 snapToPage(whichPage, SLOW_PAGE_SNAP_ANIMATION_DURATION); 918 } 919 920 private void computeWallpaperScrollRatio(int page) { 921 // Here, we determine what the desired scroll would be with and without a layout scale, 922 // and compute a ratio between the two. This allows us to adjust the wallpaper offset 923 // as though there is no layout scale. 924 float layoutScale = mLayoutScale; 925 int scaled = getChildOffset(page) - getRelativeChildOffset(page); 926 mLayoutScale = 1.0f; 927 float unscaled = getChildOffset(page) - getRelativeChildOffset(page); 928 mLayoutScale = layoutScale; 929 if (scaled > 0) { 930 mWallpaperScrollRatio = (1.0f * unscaled) / scaled; 931 } else { 932 mWallpaperScrollRatio = 1f; 933 } 934 } 935 936 class WallpaperOffsetInterpolator { 937 float mFinalHorizontalWallpaperOffset = 0.0f; 938 float mFinalVerticalWallpaperOffset = 0.5f; 939 float mHorizontalWallpaperOffset = 0.0f; 940 float mVerticalWallpaperOffset = 0.5f; 941 long mLastWallpaperOffsetUpdateTime; 942 boolean mIsMovingFast; 943 boolean mOverrideHorizontalCatchupConstant; 944 float mHorizontalCatchupConstant = 0.35f; 945 float mVerticalCatchupConstant = 0.35f; 946 947 public WallpaperOffsetInterpolator() { 948 } 949 950 public void setOverrideHorizontalCatchupConstant(boolean override) { 951 mOverrideHorizontalCatchupConstant = override; 952 } 953 954 public void setHorizontalCatchupConstant(float f) { 955 mHorizontalCatchupConstant = f; 956 } 957 958 public void setVerticalCatchupConstant(float f) { 959 mVerticalCatchupConstant = f; 960 } 961 962 public boolean computeScrollOffset() { 963 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 964 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 965 mIsMovingFast = false; 966 return false; 967 } 968 boolean isLandscape = mDisplaySize.x > mDisplaySize.y; 969 970 long currentTime = System.currentTimeMillis(); 971 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 972 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 973 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 974 975 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 976 if (!mIsMovingFast && xdiff > 0.07) { 977 mIsMovingFast = true; 978 } 979 980 float fractionToCatchUpIn1MsHorizontal; 981 if (mOverrideHorizontalCatchupConstant) { 982 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 983 } else if (mIsMovingFast) { 984 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 985 } else { 986 // slow 987 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 988 } 989 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 990 991 fractionToCatchUpIn1MsHorizontal /= 33f; 992 fractionToCatchUpIn1MsVertical /= 33f; 993 994 final float UPDATE_THRESHOLD = 0.00001f; 995 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 996 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 997 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 998 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 999 1000 // Don't have any lag between workspace and wallpaper on non-large devices 1001 if (!LauncherApplication.isScreenLarge() || jumpToFinalValue) { 1002 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 1003 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 1004 } else { 1005 float percentToCatchUpVertical = 1006 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 1007 float percentToCatchUpHorizontal = 1008 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 1009 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 1010 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 1011 } 1012 1013 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 1014 return true; 1015 } 1016 1017 public float getCurrX() { 1018 return mHorizontalWallpaperOffset; 1019 } 1020 1021 public float getFinalX() { 1022 return mFinalHorizontalWallpaperOffset; 1023 } 1024 1025 public float getCurrY() { 1026 return mVerticalWallpaperOffset; 1027 } 1028 1029 public float getFinalY() { 1030 return mFinalVerticalWallpaperOffset; 1031 } 1032 1033 public void setFinalX(float x) { 1034 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 1035 } 1036 1037 public void setFinalY(float y) { 1038 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 1039 } 1040 1041 public void jumpToFinal() { 1042 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 1043 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 1044 } 1045 } 1046 1047 @Override 1048 public void computeScroll() { 1049 super.computeScroll(); 1050 syncWallpaperOffsetWithScroll(); 1051 } 1052 1053 void showOutlines() { 1054 if (!isSmall() && !mIsSwitchingState) { 1055 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1056 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1057 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 1058 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 1059 mChildrenOutlineFadeInAnimation.start(); 1060 } 1061 } 1062 1063 void hideOutlines() { 1064 if (!isSmall() && !mIsSwitchingState) { 1065 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1066 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1067 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 1068 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 1069 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 1070 mChildrenOutlineFadeOutAnimation.start(); 1071 } 1072 } 1073 1074 public void showOutlinesTemporarily() { 1075 if (!mIsPageMoving && !isTouchActive()) { 1076 snapToPage(mCurrentPage); 1077 } 1078 } 1079 1080 public void setChildrenOutlineAlpha(float alpha) { 1081 mChildrenOutlineAlpha = alpha; 1082 for (int i = 0; i < getChildCount(); i++) { 1083 CellLayout cl = (CellLayout) getChildAt(i); 1084 cl.setBackgroundAlpha(alpha); 1085 } 1086 } 1087 1088 public float getChildrenOutlineAlpha() { 1089 return mChildrenOutlineAlpha; 1090 } 1091 1092 void disableBackground() { 1093 mDrawBackground = false; 1094 } 1095 void enableBackground() { 1096 mDrawBackground = true; 1097 } 1098 1099 private void animateBackgroundGradient(float finalAlpha, boolean animated) { 1100 if (mBackground == null) return; 1101 if (mBackgroundFadeInAnimation != null) { 1102 mBackgroundFadeInAnimation.cancel(); 1103 mBackgroundFadeInAnimation = null; 1104 } 1105 if (mBackgroundFadeOutAnimation != null) { 1106 mBackgroundFadeOutAnimation.cancel(); 1107 mBackgroundFadeOutAnimation = null; 1108 } 1109 float startAlpha = getBackgroundAlpha(); 1110 if (finalAlpha != startAlpha) { 1111 if (animated) { 1112 mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(startAlpha, finalAlpha); 1113 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1114 public void onAnimationUpdate(ValueAnimator animation) { 1115 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1116 } 1117 }); 1118 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1119 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1120 mBackgroundFadeOutAnimation.start(); 1121 } else { 1122 setBackgroundAlpha(finalAlpha); 1123 } 1124 } 1125 } 1126 1127 public void setBackgroundAlpha(float alpha) { 1128 if (alpha != mBackgroundAlpha) { 1129 mBackgroundAlpha = alpha; 1130 invalidate(); 1131 } 1132 } 1133 1134 public float getBackgroundAlpha() { 1135 return mBackgroundAlpha; 1136 } 1137 1138 /** 1139 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 1140 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 1141 * as being larger. This method computes what offset the rotated view should be translated 1142 * in order to minimize this perceived gap. 1143 * @param degrees Angle of the view 1144 * @param width Width of the view 1145 * @param height Height of the view 1146 * @return Offset to be used in a View.setTranslationX() call 1147 */ 1148 private float getOffsetXForRotation(float degrees, int width, int height) { 1149 mMatrix.reset(); 1150 mCamera.save(); 1151 mCamera.rotateY(Math.abs(degrees)); 1152 mCamera.getMatrix(mMatrix); 1153 mCamera.restore(); 1154 1155 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 1156 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 1157 mTempFloat2[0] = width; 1158 mTempFloat2[1] = height; 1159 mMatrix.mapPoints(mTempFloat2); 1160 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 1161 } 1162 1163 float backgroundAlphaInterpolator(float r) { 1164 float pivotA = 0.1f; 1165 float pivotB = 0.4f; 1166 if (r < pivotA) { 1167 return 0; 1168 } else if (r > pivotB) { 1169 return 1.0f; 1170 } else { 1171 return (r - pivotA)/(pivotB - pivotA); 1172 } 1173 } 1174 1175 float overScrollBackgroundAlphaInterpolator(float r) { 1176 float threshold = 0.08f; 1177 1178 if (r > mOverScrollMaxBackgroundAlpha) { 1179 mOverScrollMaxBackgroundAlpha = r; 1180 } else if (r < mOverScrollMaxBackgroundAlpha) { 1181 r = mOverScrollMaxBackgroundAlpha; 1182 } 1183 1184 return Math.min(r / threshold, 1.0f); 1185 } 1186 1187 private void screenScrolledLargeUI(int screenCenter) { 1188 if (isSwitchingState()) return; 1189 boolean isInOverscroll = false; 1190 for (int i = 0; i < getChildCount(); i++) { 1191 CellLayout cl = (CellLayout) getChildAt(i); 1192 if (cl != null) { 1193 float scrollProgress = getScrollProgress(screenCenter, cl, i); 1194 float rotation = WORKSPACE_ROTATION * scrollProgress; 1195 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1196 1197 // If the current page (i) is being over scrolled, we use a different 1198 // set of rules for setting the background alpha multiplier. 1199 if (!isSmall()) { 1200 if ((mOverScrollX < 0 && i == 0) || (mOverScrollX > mMaxScrollX && 1201 i == getChildCount() -1)) { 1202 isInOverscroll = true; 1203 rotation *= -1; 1204 cl.setBackgroundAlphaMultiplier( 1205 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 1206 mOverScrollPageIndex = i; 1207 cl.setOverScrollAmount(Math.abs(scrollProgress), i == 0); 1208 if (!mOverscrollTransformsSet) { 1209 mOverscrollTransformsSet = true; 1210 cl.setPivotX(cl.getMeasuredWidth() * (i == 0 ? 0.75f : 0.25f)); 1211 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1212 cl.setOverscrollTransformsDirty(true); 1213 } 1214 } else if (mOverScrollPageIndex != i) { 1215 cl.setBackgroundAlphaMultiplier( 1216 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1217 } 1218 } 1219 cl.setTranslationX(translationX); 1220 cl.setRotationY(rotation); 1221 if (mFadeInAdjacentScreens && !isSmall()) { 1222 float alpha = 1 - Math.abs(scrollProgress); 1223 cl.setShortcutAndWidgetAlpha(alpha); 1224 } 1225 } 1226 } 1227 if (mOverscrollTransformsSet && !isInOverscroll) { 1228 mOverscrollTransformsSet = false; 1229 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1230 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1231 } 1232 invalidate(); 1233 } 1234 1235 private void screenScrolledStandardUI(int screenCenter) { 1236 if (mOverScrollX < 0 || mOverScrollX > mMaxScrollX) { 1237 int index = mOverScrollX < 0 ? 0 : getChildCount() - 1; 1238 CellLayout cl = (CellLayout) getChildAt(index); 1239 float scrollProgress = getScrollProgress(screenCenter, cl, index); 1240 cl.setOverScrollAmount(Math.abs(scrollProgress), index == 0); 1241 float rotation = - WORKSPACE_OVERSCROLL_ROTATION * scrollProgress; 1242 cl.setRotationY(rotation); 1243 setFadeForOverScroll(Math.abs(scrollProgress)); 1244 if (!mOverscrollTransformsSet) { 1245 mOverscrollTransformsSet = true; 1246 cl.setCameraDistance(mDensity * CAMERA_DISTANCE); 1247 cl.setPivotX(cl.getMeasuredWidth() * (index == 0 ? 0.75f : 0.25f)); 1248 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1249 cl.setOverscrollTransformsDirty(true); 1250 } 1251 } else { 1252 if (mOverscrollFade != 0) { 1253 setFadeForOverScroll(0); 1254 } 1255 if (mOverscrollTransformsSet) { 1256 mOverscrollTransformsSet = false; 1257 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1258 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1259 } 1260 } 1261 } 1262 1263 @Override 1264 protected void screenScrolled(int screenCenter) { 1265 if (LauncherApplication.isScreenLarge()) { 1266 // We don't call super.screenScrolled() here because we handle the adjacent pages alpha 1267 // ourselves (for efficiency), and there are no scrolling indicators to update. 1268 screenScrolledLargeUI(screenCenter); 1269 } else { 1270 super.screenScrolled(screenCenter); 1271 screenScrolledStandardUI(screenCenter); 1272 } 1273 } 1274 1275 @Override 1276 protected void overScroll(float amount) { 1277 if (LauncherApplication.isScreenLarge()) { 1278 dampedOverScroll(amount); 1279 } else { 1280 acceleratedOverScroll(amount); 1281 } 1282 } 1283 1284 protected void onAttachedToWindow() { 1285 super.onAttachedToWindow(); 1286 mWindowToken = getWindowToken(); 1287 computeScroll(); 1288 mDragController.setWindowToken(mWindowToken); 1289 } 1290 1291 protected void onDetachedFromWindow() { 1292 mWindowToken = null; 1293 } 1294 1295 @Override 1296 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1297 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1298 mUpdateWallpaperOffsetImmediately = true; 1299 } 1300 super.onLayout(changed, left, top, right, bottom); 1301 } 1302 1303 @Override 1304 protected void onDraw(Canvas canvas) { 1305 updateWallpaperOffsets(); 1306 1307 // Draw the background gradient if necessary 1308 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1309 int alpha = (int) (mBackgroundAlpha * 255); 1310 mBackground.setAlpha(alpha); 1311 mBackground.setBounds(getScrollX(), 0, getScrollX() + getMeasuredWidth(), 1312 getMeasuredHeight()); 1313 mBackground.draw(canvas); 1314 } 1315 1316 super.onDraw(canvas); 1317 } 1318 1319 boolean isDrawingBackgroundGradient() { 1320 return (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground); 1321 } 1322 1323 @Override 1324 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1325 if (!mLauncher.isAllAppsVisible()) { 1326 final Folder openFolder = getOpenFolder(); 1327 if (openFolder != null) { 1328 return openFolder.requestFocus(direction, previouslyFocusedRect); 1329 } else { 1330 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1331 } 1332 } 1333 return false; 1334 } 1335 1336 @Override 1337 public int getDescendantFocusability() { 1338 if (isSmall()) { 1339 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1340 } 1341 return super.getDescendantFocusability(); 1342 } 1343 1344 @Override 1345 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1346 if (!mLauncher.isAllAppsVisible()) { 1347 final Folder openFolder = getOpenFolder(); 1348 if (openFolder != null) { 1349 openFolder.addFocusables(views, direction); 1350 } else { 1351 super.addFocusables(views, direction, focusableMode); 1352 } 1353 } 1354 } 1355 1356 public boolean isSmall() { 1357 return mState == State.SMALL || mState == State.SPRING_LOADED; 1358 } 1359 1360 void enableChildrenCache(int fromPage, int toPage) { 1361 if (fromPage > toPage) { 1362 final int temp = fromPage; 1363 fromPage = toPage; 1364 toPage = temp; 1365 } 1366 1367 final int screenCount = getChildCount(); 1368 1369 fromPage = Math.max(fromPage, 0); 1370 toPage = Math.min(toPage, screenCount - 1); 1371 1372 for (int i = fromPage; i <= toPage; i++) { 1373 final CellLayout layout = (CellLayout) getChildAt(i); 1374 layout.setChildrenDrawnWithCacheEnabled(true); 1375 layout.setChildrenDrawingCacheEnabled(true); 1376 } 1377 } 1378 1379 void clearChildrenCache() { 1380 final int screenCount = getChildCount(); 1381 for (int i = 0; i < screenCount; i++) { 1382 final CellLayout layout = (CellLayout) getChildAt(i); 1383 layout.setChildrenDrawnWithCacheEnabled(false); 1384 // In software mode, we don't want the items to continue to be drawn into bitmaps 1385 if (!isHardwareAccelerated()) { 1386 layout.setChildrenDrawingCacheEnabled(false); 1387 } 1388 } 1389 } 1390 1391 private void updateChildrenLayersEnabled() { 1392 boolean small = mState == State.SMALL || mIsSwitchingState; 1393 boolean enableChildrenLayers = small || mAnimatingViewIntoPlace || isPageMoving(); 1394 1395 if (enableChildrenLayers != mChildrenLayersEnabled) { 1396 mChildrenLayersEnabled = enableChildrenLayers; 1397 for (int i = 0; i < getPageCount(); i++) { 1398 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(mChildrenLayersEnabled); 1399 } 1400 } 1401 } 1402 1403 protected void onWallpaperTap(MotionEvent ev) { 1404 final int[] position = mTempCell; 1405 getLocationOnScreen(position); 1406 1407 int pointerIndex = ev.getActionIndex(); 1408 position[0] += (int) ev.getX(pointerIndex); 1409 position[1] += (int) ev.getY(pointerIndex); 1410 1411 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1412 ev.getAction() == MotionEvent.ACTION_UP 1413 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1414 position[0], position[1], 0, null); 1415 } 1416 1417 /* 1418 * This interpolator emulates the rate at which the perceived scale of an object changes 1419 * as its distance from a camera increases. When this interpolator is applied to a scale 1420 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1421 * from the camera. 1422 */ 1423 static class ZInterpolator implements TimeInterpolator { 1424 private float focalLength; 1425 1426 public ZInterpolator(float foc) { 1427 focalLength = foc; 1428 } 1429 1430 public float getInterpolation(float input) { 1431 return (1.0f - focalLength / (focalLength + input)) / 1432 (1.0f - focalLength / (focalLength + 1.0f)); 1433 } 1434 } 1435 1436 /* 1437 * The exact reverse of ZInterpolator. 1438 */ 1439 static class InverseZInterpolator implements TimeInterpolator { 1440 private ZInterpolator zInterpolator; 1441 public InverseZInterpolator(float foc) { 1442 zInterpolator = new ZInterpolator(foc); 1443 } 1444 public float getInterpolation(float input) { 1445 return 1 - zInterpolator.getInterpolation(1 - input); 1446 } 1447 } 1448 1449 /* 1450 * ZInterpolator compounded with an ease-out. 1451 */ 1452 static class ZoomOutInterpolator implements TimeInterpolator { 1453 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(0.75f); 1454 private final ZInterpolator zInterpolator = new ZInterpolator(0.13f); 1455 1456 public float getInterpolation(float input) { 1457 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1458 } 1459 } 1460 1461 /* 1462 * InvereZInterpolator compounded with an ease-out. 1463 */ 1464 static class ZoomInInterpolator implements TimeInterpolator { 1465 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1466 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1467 1468 public float getInterpolation(float input) { 1469 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1470 } 1471 } 1472 1473 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1474 1475 /* 1476 * 1477 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1478 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1479 * 1480 * These methods mark the appropriate pages as accepting drops (which alters their visual 1481 * appearance). 1482 * 1483 */ 1484 public void onDragStartedWithItem(View v) { 1485 final Canvas canvas = new Canvas(); 1486 1487 // The outline is used to visualize where the item will land if dropped 1488 mDragOutline = createDragOutline(v, canvas, DRAG_BITMAP_PADDING); 1489 } 1490 1491 public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, Paint alphaClipPaint) { 1492 final Canvas canvas = new Canvas(); 1493 1494 int[] size = estimateItemSize(info.spanX, info.spanY, info, false); 1495 1496 // The outline is used to visualize where the item will land if dropped 1497 mDragOutline = createDragOutline(b, canvas, DRAG_BITMAP_PADDING, size[0], 1498 size[1], alphaClipPaint); 1499 } 1500 1501 public void exitWidgetResizeMode() { 1502 DragLayer dragLayer = mLauncher.getDragLayer(); 1503 dragLayer.clearAllResizeFrames(); 1504 } 1505 1506 private void initAnimationArrays() { 1507 final int childCount = getChildCount(); 1508 if (mOldTranslationXs != null) return; 1509 mOldTranslationXs = new float[childCount]; 1510 mOldTranslationYs = new float[childCount]; 1511 mOldScaleXs = new float[childCount]; 1512 mOldScaleYs = new float[childCount]; 1513 mOldBackgroundAlphas = new float[childCount]; 1514 mOldBackgroundAlphaMultipliers = new float[childCount]; 1515 mOldAlphas = new float[childCount]; 1516 mOldRotationYs = new float[childCount]; 1517 mNewTranslationXs = new float[childCount]; 1518 mNewTranslationYs = new float[childCount]; 1519 mNewScaleXs = new float[childCount]; 1520 mNewScaleYs = new float[childCount]; 1521 mNewBackgroundAlphas = new float[childCount]; 1522 mNewBackgroundAlphaMultipliers = new float[childCount]; 1523 mNewAlphas = new float[childCount]; 1524 mNewRotationYs = new float[childCount]; 1525 } 1526 1527 Animator getChangeStateAnimation(final State state, boolean animated) { 1528 return getChangeStateAnimation(state, animated, 0); 1529 } 1530 1531 Animator getChangeStateAnimation(final State state, boolean animated, int delay) { 1532 if (mState == state) { 1533 return null; 1534 } 1535 1536 // Initialize animation arrays for the first time if necessary 1537 initAnimationArrays(); 1538 1539 AnimatorSet anim = animated ? new AnimatorSet() : null; 1540 1541 // Stop any scrolling, move to the current page right away 1542 setCurrentPage(getNextPage()); 1543 1544 final State oldState = mState; 1545 final boolean oldStateIsNormal = (oldState == State.NORMAL); 1546 final boolean oldStateIsSpringLoaded = (oldState == State.SPRING_LOADED); 1547 final boolean oldStateIsSmall = (oldState == State.SMALL); 1548 mState = state; 1549 final boolean stateIsNormal = (state == State.NORMAL); 1550 final boolean stateIsSpringLoaded = (state == State.SPRING_LOADED); 1551 final boolean stateIsSmall = (state == State.SMALL); 1552 float finalScaleFactor = 1.0f; 1553 float finalBackgroundAlpha = stateIsSpringLoaded ? 1.0f : 0f; 1554 float translationX = 0; 1555 float translationY = 0; 1556 boolean zoomIn = true; 1557 1558 if (state != State.NORMAL) { 1559 finalScaleFactor = mSpringLoadedShrinkFactor - (stateIsSmall ? 0.1f : 0); 1560 if (oldStateIsNormal && stateIsSmall) { 1561 zoomIn = false; 1562 setLayoutScale(finalScaleFactor); 1563 updateChildrenLayersEnabled(); 1564 } else { 1565 finalBackgroundAlpha = 1.0f; 1566 setLayoutScale(finalScaleFactor); 1567 } 1568 } else { 1569 setLayoutScale(1.0f); 1570 } 1571 1572 final int duration = zoomIn ? 1573 getResources().getInteger(R.integer.config_workspaceUnshrinkTime) : 1574 getResources().getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1575 for (int i = 0; i < getChildCount(); i++) { 1576 final CellLayout cl = (CellLayout) getChildAt(i); 1577 float rotation = 0f; 1578 float initialAlpha = cl.getAlpha(); 1579 float finalAlphaMultiplierValue = 1f; 1580 float finalAlpha = (!mFadeInAdjacentScreens || stateIsSpringLoaded || 1581 (i == mCurrentPage)) ? 1f : 0f; 1582 1583 // Determine the pages alpha during the state transition 1584 if ((oldStateIsSmall && stateIsNormal) || 1585 (oldStateIsNormal && stateIsSmall)) { 1586 // To/from workspace - only show the current page unless the transition is not 1587 // animated and the animation end callback below doesn't run; 1588 // or, if we're in spring-loaded mode 1589 if (i == mCurrentPage || !animated || oldStateIsSpringLoaded) { 1590 finalAlpha = 1f; 1591 finalAlphaMultiplierValue = 0f; 1592 } else { 1593 initialAlpha = 0f; 1594 finalAlpha = 0f; 1595 } 1596 } 1597 1598 // Update the rotation of the screen (don't apply rotation on Phone UI) 1599 if (LauncherApplication.isScreenLarge()) { 1600 if (i < mCurrentPage) { 1601 rotation = WORKSPACE_ROTATION; 1602 } else if (i > mCurrentPage) { 1603 rotation = -WORKSPACE_ROTATION; 1604 } 1605 } 1606 1607 // If the screen is not xlarge, then don't rotate the CellLayouts 1608 // NOTE: If we don't update the side pages alpha, then we should not hide the side 1609 // pages. see unshrink(). 1610 if (LauncherApplication.isScreenLarge()) { 1611 translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1612 } 1613 1614 mOldAlphas[i] = initialAlpha; 1615 mNewAlphas[i] = finalAlpha; 1616 if (animated) { 1617 mOldTranslationXs[i] = cl.getTranslationX(); 1618 mOldTranslationYs[i] = cl.getTranslationY(); 1619 mOldScaleXs[i] = cl.getScaleX(); 1620 mOldScaleYs[i] = cl.getScaleY(); 1621 mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1622 mOldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1623 mOldRotationYs[i] = cl.getRotationY(); 1624 1625 mNewTranslationXs[i] = translationX; 1626 mNewTranslationYs[i] = translationY; 1627 mNewScaleXs[i] = finalScaleFactor; 1628 mNewScaleYs[i] = finalScaleFactor; 1629 mNewBackgroundAlphas[i] = finalBackgroundAlpha; 1630 mNewBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1631 mNewRotationYs[i] = rotation; 1632 } else { 1633 cl.setTranslationX(translationX); 1634 cl.setTranslationY(translationY); 1635 cl.setScaleX(finalScaleFactor); 1636 cl.setScaleY(finalScaleFactor); 1637 cl.setBackgroundAlpha(finalBackgroundAlpha); 1638 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1639 cl.setShortcutAndWidgetAlpha(finalAlpha); 1640 cl.setRotationY(rotation); 1641 } 1642 } 1643 1644 if (animated) { 1645 for (int index = 0; index < getChildCount(); index++) { 1646 final int i = index; 1647 final CellLayout cl = (CellLayout) getChildAt(i); 1648 if (mOldAlphas[i] == 0 && mNewAlphas[i] == 0) { 1649 cl.setTranslationX(mNewTranslationXs[i]); 1650 cl.setTranslationY(mNewTranslationYs[i]); 1651 cl.setScaleX(mNewScaleXs[i]); 1652 cl.setScaleY(mNewScaleYs[i]); 1653 cl.setBackgroundAlpha(mNewBackgroundAlphas[i]); 1654 cl.setBackgroundAlphaMultiplier(mNewBackgroundAlphaMultipliers[i]); 1655 cl.setShortcutAndWidgetAlpha(mNewAlphas[i]); 1656 cl.setRotationY(mNewRotationYs[i]); 1657 } else { 1658 LauncherViewPropertyAnimator a = new LauncherViewPropertyAnimator(cl); 1659 a.translationX(mNewTranslationXs[i]) 1660 .translationY(mNewTranslationYs[i]) 1661 .scaleX(mNewScaleXs[i]) 1662 .scaleY(mNewScaleYs[i]) 1663 .setDuration(duration) 1664 .setInterpolator(mZoomInInterpolator); 1665 anim.play(a); 1666 1667 if (mOldAlphas[i] != mNewAlphas[i]) { 1668 LauncherViewPropertyAnimator alphaAnim = 1669 new LauncherViewPropertyAnimator(cl.getShortcutsAndWidgets()); 1670 alphaAnim.alpha(mNewAlphas[i]) 1671 .setDuration(duration) 1672 .setInterpolator(mZoomInInterpolator); 1673 anim.play(alphaAnim); 1674 } 1675 if (mOldRotationYs[i] != 0 || mNewRotationYs[i] != 0) { 1676 ValueAnimator rotate = ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1677 rotate.setInterpolator(new DecelerateInterpolator(2.0f)); 1678 rotate.addUpdateListener(new LauncherAnimatorUpdateListener() { 1679 public void onAnimationUpdate(float a, float b) { 1680 cl.setRotationY(a * mOldRotationYs[i] + b * mNewRotationYs[i]); 1681 } 1682 }); 1683 anim.play(rotate); 1684 } 1685 if (mOldBackgroundAlphas[i] != 0 || 1686 mNewBackgroundAlphas[i] != 0 || 1687 mOldBackgroundAlphaMultipliers[i] != 0 || 1688 mNewBackgroundAlphaMultipliers[i] != 0) { 1689 ValueAnimator bgAnim = ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1690 bgAnim.setInterpolator(mZoomInInterpolator); 1691 bgAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1692 public void onAnimationUpdate(float a, float b) { 1693 cl.setBackgroundAlpha( 1694 a * mOldBackgroundAlphas[i] + 1695 b * mNewBackgroundAlphas[i]); 1696 cl.setBackgroundAlphaMultiplier( 1697 a * mOldBackgroundAlphaMultipliers[i] + 1698 b * mNewBackgroundAlphaMultipliers[i]); 1699 } 1700 }); 1701 anim.play(bgAnim); 1702 } 1703 } 1704 } 1705 buildPageHardwareLayers(); 1706 anim.setStartDelay(delay); 1707 } 1708 1709 if (stateIsSpringLoaded) { 1710 // Right now we're covered by Apps Customize 1711 // Show the background gradient immediately, so the gradient will 1712 // be showing once AppsCustomize disappears 1713 animateBackgroundGradient(getResources().getInteger( 1714 R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, false); 1715 } else { 1716 // Fade the background gradient away 1717 animateBackgroundGradient(0f, true); 1718 } 1719 return anim; 1720 } 1721 1722 @Override 1723 public void onLauncherTransitionPrepare(Launcher l, boolean animated, boolean toWorkspace) { 1724 mIsSwitchingState = true; 1725 cancelScrollingIndicatorAnimations(); 1726 } 1727 1728 @Override 1729 public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) { 1730 } 1731 1732 @Override 1733 public void onLauncherTransitionStep(Launcher l, float t) { 1734 mTransitionProgress = t; 1735 } 1736 1737 @Override 1738 public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) { 1739 mIsSwitchingState = false; 1740 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 1741 updateChildrenLayersEnabled(); 1742 // The code in getChangeStateAnimation to determine initialAlpha and finalAlpha will ensure 1743 // ensure that only the current page is visible during (and subsequently, after) the 1744 // transition animation. If fade adjacent pages is disabled, then re-enable the page 1745 // visibility after the transition animation. 1746 if (!mFadeInAdjacentScreens) { 1747 for (int i = 0; i < getChildCount(); i++) { 1748 final CellLayout cl = (CellLayout) getChildAt(i); 1749 cl.setShortcutAndWidgetAlpha(1f); 1750 } 1751 } 1752 } 1753 1754 @Override 1755 public View getContent() { 1756 return this; 1757 } 1758 1759 /** 1760 * Draw the View v into the given Canvas. 1761 * 1762 * @param v the view to draw 1763 * @param destCanvas the canvas to draw on 1764 * @param padding the horizontal and vertical padding to use when drawing 1765 */ 1766 private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { 1767 final Rect clipRect = mTempRect; 1768 v.getDrawingRect(clipRect); 1769 1770 boolean textVisible = false; 1771 1772 destCanvas.save(); 1773 if (v instanceof TextView && pruneToDrawable) { 1774 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1775 clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); 1776 destCanvas.translate(padding / 2, padding / 2); 1777 d.draw(destCanvas); 1778 } else { 1779 if (v instanceof FolderIcon) { 1780 // For FolderIcons the text can bleed into the icon area, and so we need to 1781 // hide the text completely (which can't be achieved by clipping). 1782 if (((FolderIcon) v).getTextVisible()) { 1783 ((FolderIcon) v).setTextVisible(false); 1784 textVisible = true; 1785 } 1786 } else if (v instanceof BubbleTextView) { 1787 final BubbleTextView tv = (BubbleTextView) v; 1788 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1789 tv.getLayout().getLineTop(0); 1790 } else if (v instanceof TextView) { 1791 final TextView tv = (TextView) v; 1792 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1793 tv.getLayout().getLineTop(0); 1794 } 1795 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1796 destCanvas.clipRect(clipRect, Op.REPLACE); 1797 v.draw(destCanvas); 1798 1799 // Restore text visibility of FolderIcon if necessary 1800 if (textVisible) { 1801 ((FolderIcon) v).setTextVisible(true); 1802 } 1803 } 1804 destCanvas.restore(); 1805 } 1806 1807 /** 1808 * Returns a new bitmap to show when the given View is being dragged around. 1809 * Responsibility for the bitmap is transferred to the caller. 1810 */ 1811 public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1812 Bitmap b; 1813 1814 if (v instanceof TextView) { 1815 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1816 b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, 1817 d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); 1818 } else { 1819 b = Bitmap.createBitmap( 1820 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1821 } 1822 1823 canvas.setBitmap(b); 1824 drawDragView(v, canvas, padding, true); 1825 canvas.setBitmap(null); 1826 1827 return b; 1828 } 1829 1830 /** 1831 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1832 * Responsibility for the bitmap is transferred to the caller. 1833 */ 1834 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1835 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1836 final Bitmap b = Bitmap.createBitmap( 1837 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1838 1839 canvas.setBitmap(b); 1840 drawDragView(v, canvas, padding, true); 1841 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1842 canvas.setBitmap(null); 1843 return b; 1844 } 1845 1846 /** 1847 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1848 * Responsibility for the bitmap is transferred to the caller. 1849 */ 1850 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h, 1851 Paint alphaClipPaint) { 1852 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1853 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1854 canvas.setBitmap(b); 1855 1856 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 1857 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 1858 (h - padding) / (float) orig.getHeight()); 1859 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 1860 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 1861 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 1862 1863 // center the image 1864 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 1865 1866 canvas.drawBitmap(orig, src, dst, null); 1867 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor, 1868 alphaClipPaint); 1869 canvas.setBitmap(null); 1870 1871 return b; 1872 } 1873 1874 void startDrag(CellLayout.CellInfo cellInfo) { 1875 View child = cellInfo.cell; 1876 1877 // Make sure the drag was started by a long press as opposed to a long click. 1878 if (!child.isInTouchMode()) { 1879 return; 1880 } 1881 1882 mDragInfo = cellInfo; 1883 child.setVisibility(INVISIBLE); 1884 CellLayout layout = (CellLayout) child.getParent().getParent(); 1885 layout.prepareChildForDrag(child); 1886 1887 child.clearFocus(); 1888 child.setPressed(false); 1889 1890 final Canvas canvas = new Canvas(); 1891 1892 // The outline is used to visualize where the item will land if dropped 1893 mDragOutline = createDragOutline(child, canvas, DRAG_BITMAP_PADDING); 1894 beginDragShared(child, this); 1895 } 1896 1897 public void beginDragShared(View child, DragSource source) { 1898 Resources r = getResources(); 1899 1900 // The drag bitmap follows the touch point around on the screen 1901 final Bitmap b = createDragBitmap(child, new Canvas(), DRAG_BITMAP_PADDING); 1902 1903 final int bmpWidth = b.getWidth(); 1904 final int bmpHeight = b.getHeight(); 1905 1906 mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 1907 int dragLayerX = 1908 Math.round(mTempXY[0] - (bmpWidth - child.getScaleX() * child.getWidth()) / 2); 1909 int dragLayerY = 1910 Math.round(mTempXY[1] - (bmpHeight - child.getScaleY() * bmpHeight) / 2 1911 - DRAG_BITMAP_PADDING / 2); 1912 1913 Point dragVisualizeOffset = null; 1914 Rect dragRect = null; 1915 if (child instanceof BubbleTextView || child instanceof PagedViewIcon) { 1916 int iconSize = r.getDimensionPixelSize(R.dimen.app_icon_size); 1917 int iconPaddingTop = r.getDimensionPixelSize(R.dimen.app_icon_padding_top); 1918 int top = child.getPaddingTop(); 1919 int left = (bmpWidth - iconSize) / 2; 1920 int right = left + iconSize; 1921 int bottom = top + iconSize; 1922 dragLayerY += top; 1923 // Note: The drag region is used to calculate drag layer offsets, but the 1924 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 1925 dragVisualizeOffset = new Point(-DRAG_BITMAP_PADDING / 2, 1926 iconPaddingTop - DRAG_BITMAP_PADDING / 2); 1927 dragRect = new Rect(left, top, right, bottom); 1928 } else if (child instanceof FolderIcon) { 1929 int previewSize = r.getDimensionPixelSize(R.dimen.folder_preview_size); 1930 dragRect = new Rect(0, 0, child.getWidth(), previewSize); 1931 } 1932 1933 // Clear the pressed state if necessary 1934 if (child instanceof BubbleTextView) { 1935 BubbleTextView icon = (BubbleTextView) child; 1936 icon.clearPressedOrFocusedBackground(); 1937 } 1938 1939 mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 1940 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect, child.getScaleX()); 1941 b.recycle(); 1942 1943 // Show the scrolling indicator when you pick up an item 1944 showScrollingIndicator(false); 1945 } 1946 1947 void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, int screen, 1948 int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { 1949 View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); 1950 1951 final int[] cellXY = new int[2]; 1952 target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1953 addInScreen(view, container, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1954 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, cellXY[0], 1955 cellXY[1]); 1956 } 1957 1958 public boolean transitionStateShouldAllowDrop() { 1959 return ((!isSwitchingState() || mTransitionProgress > 0.5f) && mState != State.SMALL); 1960 } 1961 1962 /** 1963 * {@inheritDoc} 1964 */ 1965 public boolean acceptDrop(DragObject d) { 1966 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1967 CellLayout dropTargetLayout = mDropToLayout; 1968 if (d.dragSource != this) { 1969 // Don't accept the drop if we're not over a screen at time of drop 1970 if (dropTargetLayout == null) { 1971 return false; 1972 } 1973 if (!transitionStateShouldAllowDrop()) return false; 1974 1975 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 1976 d.dragView, mDragViewVisualCenter); 1977 1978 // We want the point to be mapped to the dragTarget. 1979 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 1980 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 1981 } else { 1982 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 1983 } 1984 1985 int spanX = 1; 1986 int spanY = 1; 1987 if (mDragInfo != null) { 1988 final CellLayout.CellInfo dragCellInfo = mDragInfo; 1989 spanX = dragCellInfo.spanX; 1990 spanY = dragCellInfo.spanY; 1991 } else { 1992 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 1993 spanX = dragInfo.spanX; 1994 spanY = dragInfo.spanY; 1995 } 1996 1997 int minSpanX = spanX; 1998 int minSpanY = spanY; 1999 if (d.dragInfo instanceof PendingAddWidgetInfo) { 2000 minSpanX = ((PendingAddWidgetInfo) d.dragInfo).minSpanX; 2001 minSpanY = ((PendingAddWidgetInfo) d.dragInfo).minSpanY; 2002 } 2003 2004 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2005 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, dropTargetLayout, 2006 mTargetCell); 2007 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2008 mDragViewVisualCenter[1], mTargetCell); 2009 if (willCreateUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, 2010 mTargetCell, distance, true)) { 2011 return true; 2012 } 2013 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, 2014 mTargetCell, distance)) { 2015 return true; 2016 } 2017 2018 int[] resultSpan = new int[2]; 2019 mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], 2020 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2021 null, mTargetCell, resultSpan, CellLayout.MODE_ACCEPT_DROP); 2022 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2023 2024 // Don't accept the drop if there's no room for the item 2025 if (!foundCell) { 2026 // Don't show the message if we are dropping on the AllApps button and the hotseat 2027 // is full 2028 boolean isHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2029 if (mTargetCell != null && isHotseat) { 2030 Hotseat hotseat = mLauncher.getHotseat(); 2031 if (hotseat.isAllAppsButtonRank( 2032 hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { 2033 return false; 2034 } 2035 } 2036 2037 mLauncher.showOutOfSpaceMessage(isHotseat); 2038 return false; 2039 } 2040 } 2041 return true; 2042 } 2043 2044 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, float 2045 distance, boolean considerTimeout) { 2046 if (distance > mMaxDistanceForFolderCreation) return false; 2047 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2048 2049 if (dropOverView != null) { 2050 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2051 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2052 return false; 2053 } 2054 } 2055 2056 boolean hasntMoved = false; 2057 if (mDragInfo != null) { 2058 hasntMoved = dropOverView == mDragInfo.cell; 2059 } 2060 2061 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2062 return false; 2063 } 2064 2065 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2066 boolean willBecomeShortcut = 2067 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2068 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2069 2070 return (aboveShortcut && willBecomeShortcut); 2071 } 2072 2073 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell, 2074 float distance) { 2075 if (distance > mMaxDistanceForFolderCreation) return false; 2076 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2077 2078 if (dropOverView != null) { 2079 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); 2080 if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { 2081 return false; 2082 } 2083 } 2084 2085 if (dropOverView instanceof FolderIcon) { 2086 FolderIcon fi = (FolderIcon) dropOverView; 2087 if (fi.acceptDrop(dragInfo)) { 2088 return true; 2089 } 2090 } 2091 return false; 2092 } 2093 2094 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2095 int[] targetCell, float distance, boolean external, DragView dragView, 2096 Runnable postAnimationRunnable) { 2097 if (distance > mMaxDistanceForFolderCreation) return false; 2098 View v = target.getChildAt(targetCell[0], targetCell[1]); 2099 2100 boolean hasntMoved = false; 2101 if (mDragInfo != null) { 2102 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2103 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2104 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2105 } 2106 2107 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2108 mCreateUserFolderOnDrop = false; 2109 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 2110 2111 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2112 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2113 2114 if (aboveShortcut && willBecomeShortcut) { 2115 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2116 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2117 // if the drag started here, we need to remove it from the workspace 2118 if (!external) { 2119 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2120 } 2121 2122 Rect folderLocation = new Rect(); 2123 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2124 target.removeView(v); 2125 2126 FolderIcon fi = 2127 mLauncher.addFolder(target, container, screen, targetCell[0], targetCell[1]); 2128 destInfo.cellX = -1; 2129 destInfo.cellY = -1; 2130 sourceInfo.cellX = -1; 2131 sourceInfo.cellY = -1; 2132 2133 // If the dragView is null, we can't animate 2134 boolean animate = dragView != null; 2135 if (animate) { 2136 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2137 postAnimationRunnable); 2138 } else { 2139 fi.addItem(destInfo); 2140 fi.addItem(sourceInfo); 2141 } 2142 return true; 2143 } 2144 return false; 2145 } 2146 2147 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2148 float distance, DragObject d, boolean external) { 2149 if (distance > mMaxDistanceForFolderCreation) return false; 2150 2151 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2152 if (!mAddToExistingFolderOnDrop) return false; 2153 mAddToExistingFolderOnDrop = false; 2154 2155 if (dropOverView instanceof FolderIcon) { 2156 FolderIcon fi = (FolderIcon) dropOverView; 2157 if (fi.acceptDrop(d.dragInfo)) { 2158 fi.onDrop(d); 2159 2160 // if the drag started here, we need to remove it from the workspace 2161 if (!external) { 2162 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2163 } 2164 return true; 2165 } 2166 } 2167 return false; 2168 } 2169 2170 public void onDrop(final DragObject d) { 2171 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2172 mDragViewVisualCenter); 2173 2174 CellLayout dropTargetLayout = mDropToLayout; 2175 2176 // We want the point to be mapped to the dragTarget. 2177 if (dropTargetLayout != null) { 2178 if (mLauncher.isHotseatLayout(dropTargetLayout)) { 2179 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2180 } else { 2181 mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); 2182 } 2183 } 2184 2185 int snapScreen = -1; 2186 boolean resizeOnDrop = false; 2187 if (d.dragSource != this) { 2188 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2189 (int) mDragViewVisualCenter[1] }; 2190 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2191 } else if (mDragInfo != null) { 2192 final View cell = mDragInfo.cell; 2193 2194 Runnable resizeRunnable = null; 2195 if (dropTargetLayout != null) { 2196 // Move internally 2197 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2198 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2199 long container = hasMovedIntoHotseat ? 2200 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2201 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2202 int screen = (mTargetCell[0] < 0) ? 2203 mDragInfo.screen : indexOfChild(dropTargetLayout); 2204 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2205 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2206 // First we find the cell nearest to point at which the item is 2207 // dropped, without any consideration to whether there is an item there. 2208 2209 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2210 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2211 float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], 2212 mDragViewVisualCenter[1], mTargetCell); 2213 2214 // If the item being dropped is a shortcut and the nearest drop 2215 // cell also contains a shortcut, then create a folder with the two shortcuts. 2216 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2217 dropTargetLayout, mTargetCell, distance, false, d.dragView, null)) { 2218 return; 2219 } 2220 2221 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, 2222 distance, d, false)) { 2223 return; 2224 } 2225 2226 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2227 // we need to find the nearest cell location that is vacant 2228 ItemInfo item = (ItemInfo) d.dragInfo; 2229 int minSpanX = item.spanX; 2230 int minSpanY = item.spanY; 2231 if (item.minSpanX > 0 && item.minSpanY > 0) { 2232 minSpanX = item.minSpanX; 2233 minSpanY = item.minSpanY; 2234 } 2235 2236 int[] resultSpan = new int[2]; 2237 mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], 2238 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, cell, 2239 mTargetCell, resultSpan, CellLayout.MODE_ON_DROP); 2240 2241 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2242 if (foundCell && (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY)) { 2243 resizeOnDrop = true; 2244 item.spanX = resultSpan[0]; 2245 item.spanY = resultSpan[1]; 2246 } 2247 2248 if (mCurrentPage != screen && !hasMovedIntoHotseat) { 2249 snapScreen = screen; 2250 snapToPage(screen); 2251 } 2252 2253 if (foundCell) { 2254 final ItemInfo info = (ItemInfo) cell.getTag(); 2255 if (hasMovedLayouts) { 2256 // Reparent the view 2257 getParentCellLayoutForView(cell).removeView(cell); 2258 addInScreen(cell, container, screen, mTargetCell[0], mTargetCell[1], 2259 info.spanX, info.spanY); 2260 } 2261 2262 // update the item's position after drop 2263 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2264 lp.cellX = lp.tmpCellX = mTargetCell[0]; 2265 lp.cellY = lp.tmpCellY = mTargetCell[1]; 2266 lp.cellHSpan = item.spanX; 2267 lp.cellVSpan = item.spanY; 2268 lp.isLockedToGrid = true; 2269 cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screen, 2270 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2271 2272 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2273 cell instanceof LauncherAppWidgetHostView) { 2274 final CellLayout cellLayout = dropTargetLayout; 2275 // We post this call so that the widget has a chance to be placed 2276 // in its final location 2277 2278 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2279 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2280 if (pinfo != null && 2281 pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2282 final Runnable addResizeFrame = new Runnable() { 2283 public void run() { 2284 DragLayer dragLayer = mLauncher.getDragLayer(); 2285 dragLayer.addResizeFrame(info, hostView, cellLayout); 2286 } 2287 }; 2288 resizeRunnable = (new Runnable() { 2289 public void run() { 2290 if (!isPageMoving()) { 2291 addResizeFrame.run(); 2292 } else { 2293 mDelayedResizeRunnable = addResizeFrame; 2294 } 2295 } 2296 }); 2297 } 2298 } 2299 2300 LauncherModel.moveItemInDatabase(mLauncher, info, container, screen, lp.cellX, 2301 lp.cellY); 2302 } else { 2303 // If we can't find a drop location, we return the item to its original position 2304 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2305 mTargetCell[0] = lp.cellX; 2306 mTargetCell[1] = lp.cellY; 2307 } 2308 } 2309 2310 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2311 final Runnable finalResizeRunnable = resizeRunnable; 2312 // Prepare it to be animated into its new position 2313 // This must be called after the view has been re-parented 2314 final Runnable onCompleteRunnable = new Runnable() { 2315 @Override 2316 public void run() { 2317 mAnimatingViewIntoPlace = false; 2318 updateChildrenLayersEnabled(); 2319 if (finalResizeRunnable != null) { 2320 finalResizeRunnable.run(); 2321 } 2322 } 2323 }; 2324 mAnimatingViewIntoPlace = true; 2325 if (d.dragView.hasDrawn()) { 2326 final ItemInfo info = (ItemInfo) cell.getTag(); 2327 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET) { 2328 int animationType = resizeOnDrop ? ANIMATE_INTO_POSITION_AND_RESIZE : 2329 ANIMATE_INTO_POSITION_AND_DISAPPEAR; 2330 animateWidgetDrop(info, parent, d.dragView, 2331 onCompleteRunnable, animationType, cell, false); 2332 } else { 2333 int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; 2334 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, 2335 onCompleteRunnable, this); 2336 } 2337 } else { 2338 d.deferDragViewCleanupPostAnimation = false; 2339 cell.setVisibility(VISIBLE); 2340 } 2341 parent.onDropChild(cell); 2342 } 2343 } 2344 2345 public void setFinalScrollForPageChange(int screen) { 2346 if (screen >= 0) { 2347 mSavedScrollX = getScrollX(); 2348 CellLayout cl = (CellLayout) getChildAt(screen); 2349 mSavedTranslationX = cl.getTranslationX(); 2350 mSavedRotationY = cl.getRotationY(); 2351 final int newX = getChildOffset(screen) - getRelativeChildOffset(screen); 2352 setScrollX(newX); 2353 cl.setTranslationX(0f); 2354 cl.setRotationY(0f); 2355 } 2356 } 2357 2358 public void resetFinalScrollForPageChange(int screen) { 2359 if (screen >= 0) { 2360 CellLayout cl = (CellLayout) getChildAt(screen); 2361 setScrollX(mSavedScrollX); 2362 cl.setTranslationX(mSavedTranslationX); 2363 cl.setRotationY(mSavedRotationY); 2364 } 2365 } 2366 2367 public void getViewLocationRelativeToSelf(View v, int[] location) { 2368 getLocationInWindow(location); 2369 int x = location[0]; 2370 int y = location[1]; 2371 2372 v.getLocationInWindow(location); 2373 int vX = location[0]; 2374 int vY = location[1]; 2375 2376 location[0] = vX - x; 2377 location[1] = vY - y; 2378 } 2379 2380 public void onDragEnter(DragObject d) { 2381 mDragEnforcer.onDragEnter(); 2382 mCreateUserFolderOnDrop = false; 2383 mAddToExistingFolderOnDrop = false; 2384 2385 mDropToLayout = null; 2386 CellLayout layout = getCurrentDropLayout(); 2387 setCurrentDropLayout(layout); 2388 setCurrentDragOverlappingLayout(layout); 2389 2390 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2391 // don't need to show the outlines 2392 if (LauncherApplication.isScreenLarge()) { 2393 showOutlines(); 2394 } 2395 } 2396 2397 static Rect getCellLayoutMetrics(Launcher launcher, int orientation) { 2398 Resources res = launcher.getResources(); 2399 Display display = launcher.getWindowManager().getDefaultDisplay(); 2400 Point smallestSize = new Point(); 2401 Point largestSize = new Point(); 2402 display.getCurrentSizeRange(smallestSize, largestSize); 2403 if (orientation == CellLayout.LANDSCAPE) { 2404 if (mLandscapeCellLayoutMetrics == null) { 2405 int paddingLeft = res.getDimensionPixelSize(R.dimen.workspace_left_padding_land); 2406 int paddingRight = res.getDimensionPixelSize(R.dimen.workspace_right_padding_land); 2407 int paddingTop = res.getDimensionPixelSize(R.dimen.workspace_top_padding_land); 2408 int paddingBottom = res.getDimensionPixelSize(R.dimen.workspace_bottom_padding_land); 2409 int width = largestSize.x - paddingLeft - paddingRight; 2410 int height = smallestSize.y - paddingTop - paddingBottom; 2411 mLandscapeCellLayoutMetrics = new Rect(); 2412 CellLayout.getMetrics(mLandscapeCellLayoutMetrics, res, 2413 width, height, LauncherModel.getCellCountX(), LauncherModel.getCellCountY(), 2414 orientation); 2415 } 2416 return mLandscapeCellLayoutMetrics; 2417 } else if (orientation == CellLayout.PORTRAIT) { 2418 if (mPortraitCellLayoutMetrics == null) { 2419 int paddingLeft = res.getDimensionPixelSize(R.dimen.workspace_left_padding_land); 2420 int paddingRight = res.getDimensionPixelSize(R.dimen.workspace_right_padding_land); 2421 int paddingTop = res.getDimensionPixelSize(R.dimen.workspace_top_padding_land); 2422 int paddingBottom = res.getDimensionPixelSize(R.dimen.workspace_bottom_padding_land); 2423 int width = smallestSize.x - paddingLeft - paddingRight; 2424 int height = largestSize.y - paddingTop - paddingBottom; 2425 mPortraitCellLayoutMetrics = new Rect(); 2426 CellLayout.getMetrics(mPortraitCellLayoutMetrics, res, 2427 width, height, LauncherModel.getCellCountX(), LauncherModel.getCellCountY(), 2428 orientation); 2429 } 2430 return mPortraitCellLayoutMetrics; 2431 } 2432 return null; 2433 } 2434 2435 public void onDragExit(DragObject d) { 2436 mDragEnforcer.onDragExit(); 2437 2438 // Here we store the final page that will be dropped to, if the workspace in fact 2439 // receives the drop 2440 if (mInScrollArea) { 2441 mDropToLayout = mDragOverlappingLayout; 2442 } else { 2443 mDropToLayout = mDragTargetLayout; 2444 } 2445 2446 if (mDragMode == DRAG_MODE_CREATE_FOLDER) { 2447 mCreateUserFolderOnDrop = true; 2448 } else if (mDragMode == DRAG_MODE_ADD_TO_FOLDER) { 2449 mAddToExistingFolderOnDrop = true; 2450 } 2451 2452 // Reset the scroll area and previous drag target 2453 onResetScrollArea(); 2454 setCurrentDropLayout(null); 2455 setCurrentDragOverlappingLayout(null); 2456 2457 mSpringLoadedDragController.cancel(); 2458 2459 if (!mIsPageMoving) { 2460 hideOutlines(); 2461 } 2462 } 2463 2464 void setCurrentDropLayout(CellLayout layout) { 2465 if (mDragTargetLayout != null) { 2466 mDragTargetLayout.revertTempState(); 2467 mDragTargetLayout.onDragExit(); 2468 } 2469 mDragTargetLayout = layout; 2470 if (mDragTargetLayout != null) { 2471 mDragTargetLayout.onDragEnter(); 2472 } 2473 cleanupReorder(true); 2474 cleanupFolderCreation(); 2475 setCurrentDropOverCell(-1, -1); 2476 } 2477 2478 void setCurrentDragOverlappingLayout(CellLayout layout) { 2479 if (mDragOverlappingLayout != null) { 2480 mDragOverlappingLayout.setIsDragOverlapping(false); 2481 } 2482 mDragOverlappingLayout = layout; 2483 if (mDragOverlappingLayout != null) { 2484 mDragOverlappingLayout.setIsDragOverlapping(true); 2485 } 2486 invalidate(); 2487 } 2488 2489 void setCurrentDropOverCell(int x, int y) { 2490 if (x != mDragOverX || y != mDragOverY) { 2491 mDragOverX = x; 2492 mDragOverY = y; 2493 setDragMode(DRAG_MODE_NONE); 2494 } 2495 } 2496 2497 void setDragMode(int dragMode) { 2498 if (dragMode != mDragMode) { 2499 if (dragMode == DRAG_MODE_NONE) { 2500 cleanupAddToFolder(); 2501 // We don't want to cancel the re-order alarm every time the target cell changes 2502 // as this feels to slow / unresponsive. 2503 cleanupReorder(false); 2504 cleanupFolderCreation(); 2505 } else if (dragMode == DRAG_MODE_ADD_TO_FOLDER) { 2506 cleanupReorder(true); 2507 cleanupFolderCreation(); 2508 } else if (dragMode == DRAG_MODE_CREATE_FOLDER) { 2509 cleanupAddToFolder(); 2510 cleanupReorder(true); 2511 } else if (dragMode == DRAG_MODE_REORDER) { 2512 cleanupAddToFolder(); 2513 cleanupFolderCreation(); 2514 } 2515 mDragMode = dragMode; 2516 } 2517 } 2518 2519 private void cleanupFolderCreation() { 2520 if (mDragFolderRingAnimator != null) { 2521 mDragFolderRingAnimator.animateToNaturalState(); 2522 } 2523 mFolderCreationAlarm.cancelAlarm(); 2524 } 2525 2526 private void cleanupAddToFolder() { 2527 if (mDragOverFolderIcon != null) { 2528 mDragOverFolderIcon.onDragExit(null); 2529 mDragOverFolderIcon = null; 2530 } 2531 } 2532 2533 private void cleanupReorder(boolean cancelAlarm) { 2534 // Any pending reorders are canceled 2535 if (cancelAlarm) { 2536 mReorderAlarm.cancelAlarm(); 2537 } 2538 mLastReorderX = -1; 2539 mLastReorderY = -1; 2540 } 2541 2542 public DropTarget getDropTargetDelegate(DragObject d) { 2543 return null; 2544 } 2545 2546 /* 2547 * 2548 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2549 * coordinate space. The argument xy is modified with the return result. 2550 * 2551 */ 2552 void mapPointFromSelfToChild(View v, float[] xy) { 2553 mapPointFromSelfToChild(v, xy, null); 2554 } 2555 2556 /* 2557 * 2558 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2559 * coordinate space. The argument xy is modified with the return result. 2560 * 2561 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2562 * computing it itself; we use this to avoid redundant matrix inversions in 2563 * findMatchingPageForDragOver 2564 * 2565 */ 2566 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2567 if (cachedInverseMatrix == null) { 2568 v.getMatrix().invert(mTempInverseMatrix); 2569 cachedInverseMatrix = mTempInverseMatrix; 2570 } 2571 int scrollX = getScrollX(); 2572 if (mNextPage != INVALID_PAGE) { 2573 scrollX = mScroller.getFinalX(); 2574 } 2575 xy[0] = xy[0] + scrollX - v.getLeft(); 2576 xy[1] = xy[1] + getScrollY() - v.getTop(); 2577 cachedInverseMatrix.mapPoints(xy); 2578 } 2579 2580 /* 2581 * Maps a point from the Workspace's coordinate system to another sibling view's. (Workspace 2582 * covers the full screen) 2583 */ 2584 void mapPointFromSelfToSibling(View v, float[] xy) { 2585 xy[0] = xy[0] - v.getLeft(); 2586 xy[1] = xy[1] - v.getTop(); 2587 } 2588 2589 void mapPointFromSelfToHotseatLayout(Hotseat hotseat, float[] xy) { 2590 xy[0] = xy[0] - hotseat.getLeft() - hotseat.getLayout().getLeft(); 2591 xy[1] = xy[1] - hotseat.getTop() - hotseat.getLayout().getTop(); 2592 } 2593 2594 /* 2595 * 2596 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2597 * the parent View's coordinate space. The argument xy is modified with the return result. 2598 * 2599 */ 2600 void mapPointFromChildToSelf(View v, float[] xy) { 2601 v.getMatrix().mapPoints(xy); 2602 int scrollX = getScrollX(); 2603 if (mNextPage != INVALID_PAGE) { 2604 scrollX = mScroller.getFinalX(); 2605 } 2606 xy[0] -= (scrollX - v.getLeft()); 2607 xy[1] -= (getScrollY() - v.getTop()); 2608 } 2609 2610 static private float squaredDistance(float[] point1, float[] point2) { 2611 float distanceX = point1[0] - point2[0]; 2612 float distanceY = point2[1] - point2[1]; 2613 return distanceX * distanceX + distanceY * distanceY; 2614 } 2615 2616 /* 2617 * 2618 * Returns true if the passed CellLayout cl overlaps with dragView 2619 * 2620 */ 2621 boolean overlaps(CellLayout cl, DragView dragView, 2622 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2623 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2624 final float[] draggedItemTopLeft = mTempDragCoordinates; 2625 draggedItemTopLeft[0] = dragViewX; 2626 draggedItemTopLeft[1] = dragViewY; 2627 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2628 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2629 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2630 2631 // Transform the dragged item's top left coordinates 2632 // to the CellLayout's local coordinates 2633 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2634 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2635 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2636 2637 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2638 // Transform the dragged item's bottom right coordinates 2639 // to the CellLayout's local coordinates 2640 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2641 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2642 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2643 2644 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2645 float overlap = (overlapRegionRight - overlapRegionLeft) * 2646 (overlapRegionBottom - overlapRegionTop); 2647 if (overlap > 0) { 2648 return true; 2649 } 2650 } 2651 } 2652 return false; 2653 } 2654 2655 /* 2656 * 2657 * This method returns the CellLayout that is currently being dragged to. In order to drag 2658 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2659 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2660 * 2661 * Return null if no CellLayout is currently being dragged over 2662 * 2663 */ 2664 private CellLayout findMatchingPageForDragOver( 2665 DragView dragView, float originX, float originY, boolean exact) { 2666 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2667 // with the item being dragged and then choose the one that's closest to the touch point 2668 final int screenCount = getChildCount(); 2669 CellLayout bestMatchingScreen = null; 2670 float smallestDistSoFar = Float.MAX_VALUE; 2671 2672 for (int i = 0; i < screenCount; i++) { 2673 CellLayout cl = (CellLayout) getChildAt(i); 2674 2675 final float[] touchXy = {originX, originY}; 2676 // Transform the touch coordinates to the CellLayout's local coordinates 2677 // If the touch point is within the bounds of the cell layout, we can return immediately 2678 cl.getMatrix().invert(mTempInverseMatrix); 2679 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2680 2681 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2682 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2683 return cl; 2684 } 2685 2686 if (!exact) { 2687 // Get the center of the cell layout in screen coordinates 2688 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2689 cellLayoutCenter[0] = cl.getWidth()/2; 2690 cellLayoutCenter[1] = cl.getHeight()/2; 2691 mapPointFromChildToSelf(cl, cellLayoutCenter); 2692 2693 touchXy[0] = originX; 2694 touchXy[1] = originY; 2695 2696 // Calculate the distance between the center of the CellLayout 2697 // and the touch point 2698 float dist = squaredDistance(touchXy, cellLayoutCenter); 2699 2700 if (dist < smallestDistSoFar) { 2701 smallestDistSoFar = dist; 2702 bestMatchingScreen = cl; 2703 } 2704 } 2705 } 2706 return bestMatchingScreen; 2707 } 2708 2709 // This is used to compute the visual center of the dragView. This point is then 2710 // used to visualize drop locations and determine where to drop an item. The idea is that 2711 // the visual center represents the user's interpretation of where the item is, and hence 2712 // is the appropriate point to use when determining drop location. 2713 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2714 DragView dragView, float[] recycle) { 2715 float res[]; 2716 if (recycle == null) { 2717 res = new float[2]; 2718 } else { 2719 res = recycle; 2720 } 2721 2722 // First off, the drag view has been shifted in a way that is not represented in the 2723 // x and y values or the x/yOffsets. Here we account for that shift. 2724 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2725 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2726 2727 // These represent the visual top and left of drag view if a dragRect was provided. 2728 // If a dragRect was not provided, then they correspond to the actual view left and 2729 // top, as the dragRect is in that case taken to be the entire dragView. 2730 // R.dimen.dragViewOffsetY. 2731 int left = x - xOffset; 2732 int top = y - yOffset; 2733 2734 // In order to find the visual center, we shift by half the dragRect 2735 res[0] = left + dragView.getDragRegion().width() / 2; 2736 res[1] = top + dragView.getDragRegion().height() / 2; 2737 2738 return res; 2739 } 2740 2741 private boolean isDragWidget(DragObject d) { 2742 return (d.dragInfo instanceof LauncherAppWidgetInfo || 2743 d.dragInfo instanceof PendingAddWidgetInfo); 2744 } 2745 private boolean isExternalDragWidget(DragObject d) { 2746 return d.dragSource != this && isDragWidget(d); 2747 } 2748 2749 public void onDragOver(DragObject d) { 2750 // Skip drag over events while we are dragging over side pages 2751 if (mInScrollArea || mIsSwitchingState || mState == State.SMALL) return; 2752 2753 Rect r = new Rect(); 2754 CellLayout layout = null; 2755 ItemInfo item = (ItemInfo) d.dragInfo; 2756 2757 // Ensure that we have proper spans for the item that we are dropping 2758 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2759 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2760 d.dragView, mDragViewVisualCenter); 2761 2762 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2763 // Identify whether we have dragged over a side page 2764 if (isSmall()) { 2765 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 2766 mLauncher.getHotseat().getHitRect(r); 2767 if (r.contains(d.x, d.y)) { 2768 layout = mLauncher.getHotseat().getLayout(); 2769 } 2770 } 2771 if (layout == null) { 2772 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false); 2773 } 2774 if (layout != mDragTargetLayout) { 2775 2776 setCurrentDropLayout(layout); 2777 setCurrentDragOverlappingLayout(layout); 2778 2779 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 2780 if (isInSpringLoadedMode) { 2781 if (mLauncher.isHotseatLayout(layout)) { 2782 mSpringLoadedDragController.cancel(); 2783 } else { 2784 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2785 } 2786 } 2787 } 2788 } else { 2789 // Test to see if we are over the hotseat otherwise just use the current page 2790 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 2791 mLauncher.getHotseat().getHitRect(r); 2792 if (r.contains(d.x, d.y)) { 2793 layout = mLauncher.getHotseat().getLayout(); 2794 } 2795 } 2796 if (layout == null) { 2797 layout = getCurrentDropLayout(); 2798 } 2799 if (layout != mDragTargetLayout) { 2800 setCurrentDropLayout(layout); 2801 setCurrentDragOverlappingLayout(layout); 2802 } 2803 } 2804 2805 // Handle the drag over 2806 if (mDragTargetLayout != null) { 2807 // We want the point to be mapped to the dragTarget. 2808 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2809 mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); 2810 } else { 2811 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2812 } 2813 2814 ItemInfo info = (ItemInfo) d.dragInfo; 2815 2816 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2817 (int) mDragViewVisualCenter[1], 1, 1, mDragTargetLayout, mTargetCell); 2818 2819 setCurrentDropOverCell(mTargetCell[0], mTargetCell[1]); 2820 2821 float targetCellDistance = mDragTargetLayout.getDistanceFromCell( 2822 mDragViewVisualCenter[0], mDragViewVisualCenter[1], mTargetCell); 2823 2824 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2825 mTargetCell[1]); 2826 2827 manageFolderFeedback(info, mDragTargetLayout, mTargetCell, 2828 targetCellDistance, dragOverView); 2829 2830 int minSpanX = item.spanX; 2831 int minSpanY = item.spanY; 2832 if (item.minSpanX > 0 && item.minSpanY > 0) { 2833 minSpanX = item.minSpanX; 2834 minSpanY = item.minSpanY; 2835 } 2836 2837 int[] reorderPosition = new int[2]; 2838 reorderPosition = findNearestArea((int) mDragViewVisualCenter[0], 2839 (int) mDragViewVisualCenter[1], item.spanX, item.spanY, mDragTargetLayout, 2840 reorderPosition); 2841 2842 boolean nearestDropOccupied = mDragTargetLayout.isNearestDropLocationOccupied((int) 2843 mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], item.spanX, 2844 item.spanY, child, mTargetCell); 2845 2846 if (!nearestDropOccupied) { 2847 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2848 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2849 mTargetCell[0], mTargetCell[1], item.spanX, item.spanY, false, 2850 d.dragView.getDragVisualizeOffset(), d.dragView.getDragRegion()); 2851 } else if ((mDragMode == DRAG_MODE_NONE || mDragMode == DRAG_MODE_REORDER) 2852 && !mReorderAlarm.alarmPending() && (mLastReorderX != reorderPosition[0] || 2853 mLastReorderY != reorderPosition[1])) { 2854 // Otherwise, if we aren't adding to or creating a folder and there's no pending 2855 // reorder, then we schedule a reorder 2856 ReorderAlarmListener listener = new ReorderAlarmListener(mDragViewVisualCenter, 2857 minSpanX, minSpanY, item.spanX, item.spanY, d.dragView, child); 2858 mReorderAlarm.setOnAlarmListener(listener); 2859 mReorderAlarm.setAlarm(REORDER_TIMEOUT); 2860 } 2861 2862 if (mDragMode == DRAG_MODE_CREATE_FOLDER || mDragMode == DRAG_MODE_ADD_TO_FOLDER || 2863 !nearestDropOccupied) { 2864 if (mDragTargetLayout != null) { 2865 mDragTargetLayout.revertTempState(); 2866 } 2867 } 2868 } 2869 } 2870 2871 private void manageFolderFeedback(ItemInfo info, CellLayout targetLayout, 2872 int[] targetCell, float distance, View dragOverView) { 2873 boolean userFolderPending = willCreateUserFolder(info, targetLayout, targetCell, distance, 2874 false); 2875 2876 if (mDragMode == DRAG_MODE_NONE && userFolderPending && 2877 !mFolderCreationAlarm.alarmPending()) { 2878 mFolderCreationAlarm.setOnAlarmListener(new 2879 FolderCreationAlarmListener(targetLayout, targetCell[0], targetCell[1])); 2880 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2881 return; 2882 } 2883 2884 boolean willAddToFolder = 2885 willAddToExistingUserFolder(info, targetLayout, targetCell, distance); 2886 2887 if (willAddToFolder && mDragMode == DRAG_MODE_NONE) { 2888 mDragOverFolderIcon = ((FolderIcon) dragOverView); 2889 mAddToExistingFolderOnDrop = true; 2890 mDragOverFolderIcon.onDragEnter(info); 2891 if (targetLayout != null) { 2892 targetLayout.clearDragOutlines(); 2893 } 2894 setDragMode(DRAG_MODE_ADD_TO_FOLDER); 2895 return; 2896 } 2897 2898 if (mDragMode == DRAG_MODE_ADD_TO_FOLDER && !willAddToFolder) { 2899 setDragMode(DRAG_MODE_NONE); 2900 } 2901 if (mDragMode == DRAG_MODE_CREATE_FOLDER && !userFolderPending) { 2902 setDragMode(DRAG_MODE_NONE); 2903 } 2904 2905 return; 2906 } 2907 2908 class FolderCreationAlarmListener implements OnAlarmListener { 2909 CellLayout layout; 2910 int cellX; 2911 int cellY; 2912 2913 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 2914 this.layout = layout; 2915 this.cellX = cellX; 2916 this.cellY = cellY; 2917 } 2918 2919 public void onAlarm(Alarm alarm) { 2920 if (mDragFolderRingAnimator == null) { 2921 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 2922 } 2923 mDragFolderRingAnimator.setCell(cellX, cellY); 2924 mDragFolderRingAnimator.setCellLayout(layout); 2925 mDragFolderRingAnimator.animateToAcceptState(); 2926 layout.showFolderAccept(mDragFolderRingAnimator); 2927 layout.clearDragOutlines(); 2928 setDragMode(DRAG_MODE_CREATE_FOLDER); 2929 } 2930 } 2931 2932 class ReorderAlarmListener implements OnAlarmListener { 2933 float[] dragViewCenter; 2934 int minSpanX, minSpanY, spanX, spanY; 2935 DragView dragView; 2936 View child; 2937 2938 public ReorderAlarmListener(float[] dragViewCenter, int minSpanX, int minSpanY, int spanX, 2939 int spanY, DragView dragView, View child) { 2940 this.dragViewCenter = dragViewCenter; 2941 this.minSpanX = minSpanX; 2942 this.minSpanY = minSpanY; 2943 this.spanX = spanX; 2944 this.spanY = spanY; 2945 this.child = child; 2946 this.dragView = dragView; 2947 } 2948 2949 public void onAlarm(Alarm alarm) { 2950 int[] resultSpan = new int[2]; 2951 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2952 (int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell); 2953 mLastReorderX = mTargetCell[0]; 2954 mLastReorderY = mTargetCell[1]; 2955 2956 mTargetCell = mDragTargetLayout.createArea((int) mDragViewVisualCenter[0], 2957 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, 2958 child, mTargetCell, resultSpan, CellLayout.MODE_DRAG_OVER); 2959 2960 if (mTargetCell[0] < 0 || mTargetCell[1] < 0) { 2961 mDragTargetLayout.revertTempState(); 2962 } else { 2963 setDragMode(DRAG_MODE_REORDER); 2964 } 2965 2966 boolean resize = resultSpan[0] != spanX || resultSpan[1] != spanY; 2967 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2968 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2969 mTargetCell[0], mTargetCell[1], resultSpan[0], resultSpan[1], resize, 2970 dragView.getDragVisualizeOffset(), dragView.getDragRegion()); 2971 } 2972 } 2973 2974 @Override 2975 public void getHitRect(Rect outRect) { 2976 // We want the workspace to have the whole area of the display (it will find the correct 2977 // cell layout to drop to in the existing drag/drop logic. 2978 outRect.set(0, 0, mDisplaySize.x, mDisplaySize.y); 2979 } 2980 2981 /** 2982 * Add the item specified by dragInfo to the given layout. 2983 * @return true if successful 2984 */ 2985 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2986 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2987 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2988 return true; 2989 } 2990 mLauncher.showOutOfSpaceMessage(mLauncher.isHotseatLayout(layout)); 2991 return false; 2992 } 2993 2994 private void onDropExternal(int[] touchXY, Object dragInfo, 2995 CellLayout cellLayout, boolean insertAtFirst) { 2996 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 2997 } 2998 2999 /** 3000 * Drop an item that didn't originate on one of the workspace screens. 3001 * It may have come from Launcher (e.g. from all apps or customize), or it may have 3002 * come from another app altogether. 3003 * 3004 * NOTE: This can also be called when we are outside of a drag event, when we want 3005 * to add an item to one of the workspace screens. 3006 */ 3007 private void onDropExternal(final int[] touchXY, final Object dragInfo, 3008 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 3009 final Runnable exitSpringLoadedRunnable = new Runnable() { 3010 @Override 3011 public void run() { 3012 mLauncher.exitSpringLoadedDragModeDelayed(true, false, null); 3013 } 3014 }; 3015 3016 ItemInfo info = (ItemInfo) dragInfo; 3017 int spanX = info.spanX; 3018 int spanY = info.spanY; 3019 if (mDragInfo != null) { 3020 spanX = mDragInfo.spanX; 3021 spanY = mDragInfo.spanY; 3022 } 3023 3024 final long container = mLauncher.isHotseatLayout(cellLayout) ? 3025 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 3026 LauncherSettings.Favorites.CONTAINER_DESKTOP; 3027 final int screen = indexOfChild(cellLayout); 3028 if (!mLauncher.isHotseatLayout(cellLayout) && screen != mCurrentPage 3029 && mState != State.SPRING_LOADED) { 3030 snapToPage(screen); 3031 } 3032 3033 if (info instanceof PendingAddItemInfo) { 3034 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 3035 3036 boolean findNearestVacantCell = true; 3037 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 3038 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3039 cellLayout, mTargetCell); 3040 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3041 mDragViewVisualCenter[1], mTargetCell); 3042 if (willCreateUserFolder((ItemInfo) d.dragInfo, cellLayout, mTargetCell, 3043 distance, true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 3044 cellLayout, mTargetCell, distance)) { 3045 findNearestVacantCell = false; 3046 } 3047 } 3048 3049 final ItemInfo item = (ItemInfo) d.dragInfo; 3050 if (findNearestVacantCell) { 3051 int minSpanX = item.spanX; 3052 int minSpanY = item.spanY; 3053 if (item.minSpanX > 0 && item.minSpanY > 0) { 3054 minSpanX = item.minSpanX; 3055 minSpanY = item.minSpanY; 3056 } 3057 int[] resultSpan = new int[2]; 3058 mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], 3059 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, info.spanX, info.spanY, 3060 null, mTargetCell, resultSpan, CellLayout.MODE_ON_DROP_EXTERNAL); 3061 item.spanX = resultSpan[0]; 3062 item.spanY = resultSpan[1]; 3063 } 3064 3065 Runnable onAnimationCompleteRunnable = new Runnable() { 3066 @Override 3067 public void run() { 3068 // When dragging and dropping from customization tray, we deal with creating 3069 // widgets/shortcuts/folders in a slightly different way 3070 switch (pendingInfo.itemType) { 3071 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 3072 int span[] = new int[2]; 3073 span[0] = item.spanX; 3074 span[1] = item.spanY; 3075 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, 3076 container, screen, mTargetCell, span, null); 3077 break; 3078 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3079 mLauncher.processShortcutFromDrop(pendingInfo.componentName, 3080 container, screen, mTargetCell, null); 3081 break; 3082 default: 3083 throw new IllegalStateException("Unknown item type: " + 3084 pendingInfo.itemType); 3085 } 3086 } 3087 }; 3088 View finalView = pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET 3089 ? ((PendingAddWidgetInfo) pendingInfo).boundWidget : null; 3090 int animationStyle = ANIMATE_INTO_POSITION_AND_DISAPPEAR; 3091 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && 3092 ((PendingAddWidgetInfo) pendingInfo).info.configure != null) { 3093 animationStyle = ANIMATE_INTO_POSITION_AND_REMAIN; 3094 } 3095 animateWidgetDrop(info, cellLayout, d.dragView, onAnimationCompleteRunnable, 3096 animationStyle, finalView, true); 3097 } else { 3098 // This is for other drag/drop cases, like dragging from All Apps 3099 View view = null; 3100 3101 switch (info.itemType) { 3102 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 3103 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3104 if (info.container == NO_ID && info instanceof ApplicationInfo) { 3105 // Came from all apps -- make a copy 3106 info = new ShortcutInfo((ApplicationInfo) info); 3107 } 3108 view = mLauncher.createShortcut(R.layout.application, cellLayout, 3109 (ShortcutInfo) info); 3110 break; 3111 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 3112 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 3113 (FolderInfo) info, mIconCache); 3114 break; 3115 default: 3116 throw new IllegalStateException("Unknown item type: " + info.itemType); 3117 } 3118 3119 // First we find the cell nearest to point at which the item is 3120 // dropped, without any consideration to whether there is an item there. 3121 if (touchXY != null) { 3122 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3123 cellLayout, mTargetCell); 3124 float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], 3125 mDragViewVisualCenter[1], mTargetCell); 3126 d.postAnimationRunnable = exitSpringLoadedRunnable; 3127 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, distance, 3128 true, d.dragView, d.postAnimationRunnable)) { 3129 return; 3130 } 3131 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, distance, d, 3132 true)) { 3133 return; 3134 } 3135 } 3136 3137 if (touchXY != null) { 3138 // when dragging and dropping, just find the closest free spot 3139 mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], 3140 (int) mDragViewVisualCenter[1], 1, 1, 1, 1, 3141 null, mTargetCell, null, CellLayout.MODE_ON_DROP_EXTERNAL); 3142 } else { 3143 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3144 } 3145 addInScreen(view, container, screen, mTargetCell[0], mTargetCell[1], info.spanX, 3146 info.spanY, insertAtFirst); 3147 cellLayout.onDropChild(view); 3148 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 3149 cellLayout.getShortcutsAndWidgets().measureChild(view); 3150 3151 3152 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, 3153 lp.cellX, lp.cellY); 3154 3155 if (d.dragView != null) { 3156 // We wrap the animation call in the temporary set and reset of the current 3157 // cellLayout to its final transform -- this means we animate the drag view to 3158 // the correct final location. 3159 setFinalTransitionTransform(cellLayout); 3160 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 3161 exitSpringLoadedRunnable); 3162 resetTransitionTransform(cellLayout); 3163 } 3164 } 3165 } 3166 3167 public Bitmap createWidgetBitmap(ItemInfo widgetInfo, View layout) { 3168 int[] unScaledSize = mLauncher.getWorkspace().estimateItemSize(widgetInfo.spanX, 3169 widgetInfo.spanY, widgetInfo, false); 3170 int visibility = layout.getVisibility(); 3171 layout.setVisibility(VISIBLE); 3172 3173 int width = MeasureSpec.makeMeasureSpec(unScaledSize[0], MeasureSpec.EXACTLY); 3174 int height = MeasureSpec.makeMeasureSpec(unScaledSize[1], MeasureSpec.EXACTLY); 3175 Bitmap b = Bitmap.createBitmap(unScaledSize[0], unScaledSize[1], 3176 Bitmap.Config.ARGB_8888); 3177 Canvas c = new Canvas(b); 3178 3179 layout.measure(width, height); 3180 layout.layout(0, 0, unScaledSize[0], unScaledSize[1]); 3181 layout.draw(c); 3182 c.setBitmap(null); 3183 layout.setVisibility(visibility); 3184 return b; 3185 } 3186 3187 private void getFinalPositionForDropAnimation(int[] loc, float[] scaleXY, 3188 DragView dragView, CellLayout layout, ItemInfo info, int[] targetCell, View finalView, 3189 boolean external) { 3190 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 3191 // location and size on the home screen. 3192 int spanX = info.spanX; 3193 int spanY = info.spanY; 3194 3195 Rect r = estimateItemPosition(layout, info, targetCell[0], targetCell[1], spanX, spanY); 3196 loc[0] = r.left; 3197 loc[1] = r.top; 3198 3199 setFinalTransitionTransform(layout); 3200 float cellLayoutScale = 3201 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(layout, loc); 3202 resetTransitionTransform(layout); 3203 float dragViewScaleX = (1.0f * r.width()) / dragView.getMeasuredWidth(); 3204 float dragViewScaleY = (1.0f * r.height()) / dragView.getMeasuredHeight(); 3205 3206 // The animation will scale the dragView about its center, so we need to center about 3207 // the final location. 3208 loc[0] -= (dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 3209 loc[1] -= (dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 3210 3211 scaleXY[0] = dragViewScaleX * cellLayoutScale; 3212 scaleXY[1] = dragViewScaleY * cellLayoutScale; 3213 } 3214 3215 public void animateWidgetDrop(ItemInfo info, CellLayout cellLayout, DragView dragView, 3216 final Runnable onCompleteRunnable, int animationType, final View finalView, 3217 boolean external) { 3218 Rect from = new Rect(); 3219 mLauncher.getDragLayer().getViewRectRelativeToSelf(dragView, from); 3220 3221 int[] finalPos = new int[2]; 3222 float scaleXY[] = new float[2]; 3223 getFinalPositionForDropAnimation(finalPos, scaleXY, dragView, cellLayout, info, mTargetCell, 3224 finalView, external); 3225 3226 Resources res = mLauncher.getResources(); 3227 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration) - 200; 3228 3229 // In the case where we've prebound the widget, we remove it from the DragLayer 3230 if (finalView instanceof AppWidgetHostView && external) { 3231 mLauncher.getDragLayer().removeView(finalView); 3232 } 3233 if ((animationType == ANIMATE_INTO_POSITION_AND_RESIZE || external) && finalView != null) { 3234 Bitmap crossFadeBitmap = createWidgetBitmap(info, finalView); 3235 dragView.setCrossFadeBitmap(crossFadeBitmap); 3236 dragView.crossFade((int) (duration * 0.8f)); 3237 } else if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && external) { 3238 scaleXY[0] = scaleXY[1] = Math.min(scaleXY[0], scaleXY[1]); 3239 } 3240 3241 DragLayer dragLayer = mLauncher.getDragLayer(); 3242 if (animationType == CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION) { 3243 mLauncher.getDragLayer().animateViewIntoPosition(dragView, finalPos, 0f, 0.1f, 0.1f, 3244 DragLayer.ANIMATION_END_DISAPPEAR, onCompleteRunnable, duration); 3245 } else { 3246 int endStyle; 3247 if (animationType == ANIMATE_INTO_POSITION_AND_REMAIN) { 3248 endStyle = DragLayer.ANIMATION_END_REMAIN_VISIBLE; 3249 } else { 3250 endStyle = DragLayer.ANIMATION_END_DISAPPEAR;; 3251 } 3252 3253 Runnable onComplete = new Runnable() { 3254 @Override 3255 public void run() { 3256 if (finalView != null) { 3257 finalView.setVisibility(VISIBLE); 3258 } 3259 if (onCompleteRunnable != null) { 3260 onCompleteRunnable.run(); 3261 } 3262 } 3263 }; 3264 dragLayer.animateViewIntoPosition(dragView, from.left, from.top, finalPos[0], 3265 finalPos[1], 1, 1, 1, scaleXY[0], scaleXY[1], onComplete, endStyle, 3266 duration, this); 3267 } 3268 } 3269 3270 public void setFinalTransitionTransform(CellLayout layout) { 3271 if (isSwitchingState()) { 3272 int index = indexOfChild(layout); 3273 mCurrentScaleX = layout.getScaleX(); 3274 mCurrentScaleY = layout.getScaleY(); 3275 mCurrentTranslationX = layout.getTranslationX(); 3276 mCurrentTranslationY = layout.getTranslationY(); 3277 mCurrentRotationY = layout.getRotationY(); 3278 layout.setScaleX(mNewScaleXs[index]); 3279 layout.setScaleY(mNewScaleYs[index]); 3280 layout.setTranslationX(mNewTranslationXs[index]); 3281 layout.setTranslationY(mNewTranslationYs[index]); 3282 layout.setRotationY(mNewRotationYs[index]); 3283 } 3284 } 3285 public void resetTransitionTransform(CellLayout layout) { 3286 if (isSwitchingState()) { 3287 mCurrentScaleX = layout.getScaleX(); 3288 mCurrentScaleY = layout.getScaleY(); 3289 mCurrentTranslationX = layout.getTranslationX(); 3290 mCurrentTranslationY = layout.getTranslationY(); 3291 mCurrentRotationY = layout.getRotationY(); 3292 layout.setScaleX(mCurrentScaleX); 3293 layout.setScaleY(mCurrentScaleY); 3294 layout.setTranslationX(mCurrentTranslationX); 3295 layout.setTranslationY(mCurrentTranslationY); 3296 layout.setRotationY(mCurrentRotationY); 3297 } 3298 } 3299 3300 /** 3301 * Return the current {@link CellLayout}, correctly picking the destination 3302 * screen while a scroll is in progress. 3303 */ 3304 public CellLayout getCurrentDropLayout() { 3305 return (CellLayout) getChildAt(getNextPage()); 3306 } 3307 3308 /** 3309 * Return the current CellInfo describing our current drag; this method exists 3310 * so that Launcher can sync this object with the correct info when the activity is created/ 3311 * destroyed 3312 * 3313 */ 3314 public CellLayout.CellInfo getDragInfo() { 3315 return mDragInfo; 3316 } 3317 3318 /** 3319 * Calculate the nearest cell where the given object would be dropped. 3320 * 3321 * pixelX and pixelY should be in the coordinate system of layout 3322 */ 3323 private int[] findNearestArea(int pixelX, int pixelY, 3324 int spanX, int spanY, CellLayout layout, int[] recycle) { 3325 return layout.findNearestArea( 3326 pixelX, pixelY, spanX, spanY, recycle); 3327 } 3328 3329 void setup(DragController dragController) { 3330 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3331 mDragController = dragController; 3332 3333 // hardware layers on children are enabled on startup, but should be disabled until 3334 // needed 3335 updateChildrenLayersEnabled(); 3336 setWallpaperDimension(); 3337 } 3338 3339 /** 3340 * Called at the end of a drag which originated on the workspace. 3341 */ 3342 public void onDropCompleted(View target, DragObject d, boolean isFlingToDelete, 3343 boolean success) { 3344 if (success) { 3345 if (target != this) { 3346 if (mDragInfo != null) { 3347 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 3348 if (mDragInfo.cell instanceof DropTarget) { 3349 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 3350 } 3351 } 3352 } 3353 } else if (mDragInfo != null) { 3354 CellLayout cellLayout; 3355 if (mLauncher.isHotseatLayout(target)) { 3356 cellLayout = mLauncher.getHotseat().getLayout(); 3357 } else { 3358 cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3359 } 3360 cellLayout.onDropChild(mDragInfo.cell); 3361 } 3362 if (d.cancelled && mDragInfo.cell != null) { 3363 mDragInfo.cell.setVisibility(VISIBLE); 3364 } 3365 mDragOutline = null; 3366 mDragInfo = null; 3367 3368 // Hide the scrolling indicator after you pick up an item 3369 hideScrollingIndicator(false); 3370 } 3371 3372 void updateItemLocationsInDatabase(CellLayout cl) { 3373 int count = cl.getShortcutsAndWidgets().getChildCount(); 3374 3375 int screen = indexOfChild(cl); 3376 int container = Favorites.CONTAINER_DESKTOP; 3377 3378 if (mLauncher.isHotseatLayout(cl)) { 3379 screen = -1; 3380 container = Favorites.CONTAINER_HOTSEAT; 3381 } 3382 3383 for (int i = 0; i < count; i++) { 3384 View v = cl.getShortcutsAndWidgets().getChildAt(i); 3385 ItemInfo info = (ItemInfo) v.getTag(); 3386 // Null check required as the AllApps button doesn't have an item info 3387 if (info != null) { 3388 LauncherModel.modifyItemInDatabase(mLauncher, info, container, screen, info.cellX, 3389 info.cellY, info.spanX, info.spanY); 3390 } 3391 } 3392 } 3393 3394 @Override 3395 public boolean supportsFlingToDelete() { 3396 return true; 3397 } 3398 3399 @Override 3400 public void onFlingToDelete(DragObject d, int x, int y, PointF vec) { 3401 // Do nothing 3402 } 3403 3404 @Override 3405 public void onFlingToDeleteCompleted() { 3406 // Do nothing 3407 } 3408 3409 public boolean isDropEnabled() { 3410 return true; 3411 } 3412 3413 @Override 3414 protected void onRestoreInstanceState(Parcelable state) { 3415 super.onRestoreInstanceState(state); 3416 Launcher.setScreen(mCurrentPage); 3417 } 3418 3419 @Override 3420 public void scrollLeft() { 3421 if (!isSmall() && !mIsSwitchingState) { 3422 super.scrollLeft(); 3423 } 3424 Folder openFolder = getOpenFolder(); 3425 if (openFolder != null) { 3426 openFolder.completeDragExit(); 3427 } 3428 } 3429 3430 @Override 3431 public void scrollRight() { 3432 if (!isSmall() && !mIsSwitchingState) { 3433 super.scrollRight(); 3434 } 3435 Folder openFolder = getOpenFolder(); 3436 if (openFolder != null) { 3437 openFolder.completeDragExit(); 3438 } 3439 } 3440 3441 @Override 3442 public boolean onEnterScrollArea(int x, int y, int direction) { 3443 // Ignore the scroll area if we are dragging over the hot seat 3444 boolean isPortrait = !LauncherApplication.isScreenLandscape(getContext()); 3445 if (mLauncher.getHotseat() != null && isPortrait) { 3446 Rect r = new Rect(); 3447 mLauncher.getHotseat().getHitRect(r); 3448 if (r.contains(x, y)) { 3449 return false; 3450 } 3451 } 3452 3453 boolean result = false; 3454 if (!isSmall() && !mIsSwitchingState) { 3455 mInScrollArea = true; 3456 3457 final int page = getNextPage() + 3458 (direction == DragController.SCROLL_LEFT ? -1 : 1); 3459 3460 // We always want to exit the current layout to ensure parity of enter / exit 3461 setCurrentDropLayout(null); 3462 3463 if (0 <= page && page < getChildCount()) { 3464 CellLayout layout = (CellLayout) getChildAt(page); 3465 setCurrentDragOverlappingLayout(layout); 3466 3467 // Workspace is responsible for drawing the edge glow on adjacent pages, 3468 // so we need to redraw the workspace when this may have changed. 3469 invalidate(); 3470 result = true; 3471 } 3472 } 3473 return result; 3474 } 3475 3476 @Override 3477 public boolean onExitScrollArea() { 3478 boolean result = false; 3479 if (mInScrollArea) { 3480 invalidate(); 3481 CellLayout layout = getCurrentDropLayout(); 3482 setCurrentDropLayout(layout); 3483 setCurrentDragOverlappingLayout(layout); 3484 3485 result = true; 3486 mInScrollArea = false; 3487 } 3488 return result; 3489 } 3490 3491 private void onResetScrollArea() { 3492 setCurrentDragOverlappingLayout(null); 3493 mInScrollArea = false; 3494 } 3495 3496 /** 3497 * Returns a specific CellLayout 3498 */ 3499 CellLayout getParentCellLayoutForView(View v) { 3500 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3501 for (CellLayout layout : layouts) { 3502 if (layout.getShortcutsAndWidgets().indexOfChild(v) > -1) { 3503 return layout; 3504 } 3505 } 3506 return null; 3507 } 3508 3509 /** 3510 * Returns a list of all the CellLayouts in the workspace. 3511 */ 3512 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3513 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3514 int screenCount = getChildCount(); 3515 for (int screen = 0; screen < screenCount; screen++) { 3516 layouts.add(((CellLayout) getChildAt(screen))); 3517 } 3518 if (mLauncher.getHotseat() != null) { 3519 layouts.add(mLauncher.getHotseat().getLayout()); 3520 } 3521 return layouts; 3522 } 3523 3524 /** 3525 * We should only use this to search for specific children. Do not use this method to modify 3526 * ShortcutsAndWidgetsContainer directly. Includes ShortcutAndWidgetContainers from 3527 * the hotseat and workspace pages 3528 */ 3529 ArrayList<ShortcutAndWidgetContainer> getAllShortcutAndWidgetContainers() { 3530 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3531 new ArrayList<ShortcutAndWidgetContainer>(); 3532 int screenCount = getChildCount(); 3533 for (int screen = 0; screen < screenCount; screen++) { 3534 childrenLayouts.add(((CellLayout) getChildAt(screen)).getShortcutsAndWidgets()); 3535 } 3536 if (mLauncher.getHotseat() != null) { 3537 childrenLayouts.add(mLauncher.getHotseat().getLayout().getShortcutsAndWidgets()); 3538 } 3539 return childrenLayouts; 3540 } 3541 3542 public Folder getFolderForTag(Object tag) { 3543 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3544 getAllShortcutAndWidgetContainers(); 3545 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3546 int count = layout.getChildCount(); 3547 for (int i = 0; i < count; i++) { 3548 View child = layout.getChildAt(i); 3549 if (child instanceof Folder) { 3550 Folder f = (Folder) child; 3551 if (f.getInfo() == tag && f.getInfo().opened) { 3552 return f; 3553 } 3554 } 3555 } 3556 } 3557 return null; 3558 } 3559 3560 public View getViewForTag(Object tag) { 3561 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3562 getAllShortcutAndWidgetContainers(); 3563 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3564 int count = layout.getChildCount(); 3565 for (int i = 0; i < count; i++) { 3566 View child = layout.getChildAt(i); 3567 if (child.getTag() == tag) { 3568 return child; 3569 } 3570 } 3571 } 3572 return null; 3573 } 3574 3575 void clearDropTargets() { 3576 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = 3577 getAllShortcutAndWidgetContainers(); 3578 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3579 int childCount = layout.getChildCount(); 3580 for (int j = 0; j < childCount; j++) { 3581 View v = layout.getChildAt(j); 3582 if (v instanceof DropTarget) { 3583 mDragController.removeDropTarget((DropTarget) v); 3584 } 3585 } 3586 } 3587 } 3588 3589 void removeItems(final ArrayList<ApplicationInfo> apps) { 3590 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3591 3592 final HashSet<String> packageNames = new HashSet<String>(); 3593 final int appCount = apps.size(); 3594 for (int i = 0; i < appCount; i++) { 3595 packageNames.add(apps.get(i).componentName.getPackageName()); 3596 } 3597 3598 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3599 for (final CellLayout layoutParent: cellLayouts) { 3600 final ViewGroup layout = layoutParent.getShortcutsAndWidgets(); 3601 3602 // Avoid ANRs by treating each screen separately 3603 post(new Runnable() { 3604 public void run() { 3605 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3606 childrenToRemove.clear(); 3607 3608 int childCount = layout.getChildCount(); 3609 for (int j = 0; j < childCount; j++) { 3610 final View view = layout.getChildAt(j); 3611 Object tag = view.getTag(); 3612 3613 if (tag instanceof ShortcutInfo) { 3614 final ShortcutInfo info = (ShortcutInfo) tag; 3615 final Intent intent = info.intent; 3616 final ComponentName name = intent.getComponent(); 3617 3618 if (name != null) { 3619 if (packageNames.contains(name.getPackageName())) { 3620 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3621 childrenToRemove.add(view); 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 if (packageNames.contains(name.getPackageName())) { 3638 appsToRemoveFromFolder.add(appInfo); 3639 } 3640 } 3641 } 3642 for (ShortcutInfo item: appsToRemoveFromFolder) { 3643 info.remove(item); 3644 LauncherModel.deleteItemFromDatabase(mLauncher, item); 3645 } 3646 } else if (tag instanceof LauncherAppWidgetInfo) { 3647 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3648 final ComponentName provider = info.providerName; 3649 if (provider != null) { 3650 if (packageNames.contains(provider.getPackageName())) { 3651 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3652 childrenToRemove.add(view); 3653 } 3654 } 3655 } 3656 } 3657 3658 childCount = childrenToRemove.size(); 3659 for (int j = 0; j < childCount; j++) { 3660 View child = childrenToRemove.get(j); 3661 // Note: We can not remove the view directly from CellLayoutChildren as this 3662 // does not re-mark the spaces as unoccupied. 3663 layoutParent.removeViewInLayout(child); 3664 if (child instanceof DropTarget) { 3665 mDragController.removeDropTarget((DropTarget)child); 3666 } 3667 } 3668 3669 if (childCount > 0) { 3670 layout.requestLayout(); 3671 layout.invalidate(); 3672 } 3673 } 3674 }); 3675 } 3676 3677 // It is no longer the case the BubbleTextViews correspond 1:1 with the workspace items in 3678 // the database (and LauncherModel) since shortcuts are not added and animated in until 3679 // the user returns to launcher. As a result, we really should be cleaning up the Db 3680 // regardless of whether the item was added or not (unlike the logic above). This is only 3681 // relevant for direct workspace items. 3682 post(new Runnable() { 3683 @Override 3684 public void run() { 3685 String spKey = LauncherApplication.getSharedPreferencesKey(); 3686 SharedPreferences sp = getContext().getSharedPreferences(spKey, 3687 Context.MODE_PRIVATE); 3688 Set<String> newApps = sp.getStringSet(InstallShortcutReceiver.NEW_APPS_LIST_KEY, 3689 null); 3690 3691 for (String packageName: packageNames) { 3692 // Remove all items that have the same package, but were not removed above 3693 ArrayList<ShortcutInfo> infos = 3694 mLauncher.getModel().getShortcutInfosForPackage(packageName); 3695 for (ShortcutInfo info : infos) { 3696 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3697 } 3698 // Remove all queued items that match the same package 3699 if (newApps != null) { 3700 for (String intentStr : newApps) { 3701 try { 3702 Intent intent = Intent.parseUri(intentStr, 0); 3703 if (packageNames.contains(intent.getPackage())) { 3704 newApps.remove(intentStr); 3705 } 3706 } catch (URISyntaxException e) {} 3707 } 3708 } 3709 } 3710 } 3711 }); 3712 } 3713 3714 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3715 ArrayList<ShortcutAndWidgetContainer> childrenLayouts = getAllShortcutAndWidgetContainers(); 3716 for (ShortcutAndWidgetContainer layout: childrenLayouts) { 3717 int childCount = layout.getChildCount(); 3718 for (int j = 0; j < childCount; j++) { 3719 final View view = layout.getChildAt(j); 3720 Object tag = view.getTag(); 3721 if (tag instanceof ShortcutInfo) { 3722 ShortcutInfo info = (ShortcutInfo) tag; 3723 // We need to check for ACTION_MAIN otherwise getComponent() might 3724 // return null for some shortcuts (for instance, for shortcuts to 3725 // web pages.) 3726 final Intent intent = info.intent; 3727 final ComponentName name = intent.getComponent(); 3728 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3729 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3730 final int appCount = apps.size(); 3731 for (int k = 0; k < appCount; k++) { 3732 ApplicationInfo app = apps.get(k); 3733 if (app.componentName.equals(name)) { 3734 BubbleTextView shortcut = (BubbleTextView) view; 3735 info.updateIcon(mIconCache); 3736 info.title = app.title.toString(); 3737 shortcut.applyFromShortcutInfo(info, mIconCache); 3738 } 3739 } 3740 } 3741 } 3742 } 3743 } 3744 } 3745 3746 void moveToDefaultScreen(boolean animate) { 3747 if (!isSmall()) { 3748 if (animate) { 3749 snapToPage(mDefaultPage); 3750 } else { 3751 setCurrentPage(mDefaultPage); 3752 } 3753 } 3754 getChildAt(mDefaultPage).requestFocus(); 3755 } 3756 3757 @Override 3758 public void syncPages() { 3759 } 3760 3761 @Override 3762 public void syncPageItems(int page, boolean immediate) { 3763 } 3764 3765 @Override 3766 protected String getCurrentPageDescription() { 3767 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 3768 return String.format(getContext().getString(R.string.workspace_scroll_format), 3769 page + 1, getChildCount()); 3770 } 3771 3772 public void getLocationInDragLayer(int[] loc) { 3773 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 3774 } 3775 3776 void setFadeForOverScroll(float fade) { 3777 if (!isScrollingIndicatorEnabled()) return; 3778 3779 mOverscrollFade = fade; 3780 float reducedFade = 0.5f + 0.5f * (1 - fade); 3781 final ViewGroup parent = (ViewGroup) getParent(); 3782 final ImageView qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3783 final ImageView dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3784 final View scrollIndicator = getScrollingIndicator(); 3785 3786 cancelScrollingIndicatorAnimations(); 3787 if (qsbDivider != null) qsbDivider.setAlpha(reducedFade); 3788 if (dockDivider != null) dockDivider.setAlpha(reducedFade); 3789 scrollIndicator.setAlpha(1 - fade); 3790 } 3791} 3792