Workspace.java revision f0777b9d7a8f4befa22a36f227a052616152108f
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.AnimatorListenerAdapter; 21import android.animation.AnimatorSet; 22import android.animation.ObjectAnimator; 23import android.animation.TimeInterpolator; 24import android.animation.ValueAnimator; 25import android.animation.ValueAnimator.AnimatorUpdateListener; 26import android.app.AlertDialog; 27import android.app.WallpaperManager; 28import android.appwidget.AppWidgetHostView; 29import android.appwidget.AppWidgetManager; 30import android.appwidget.AppWidgetProviderInfo; 31import android.content.ClipData; 32import android.content.ClipDescription; 33import android.content.ComponentName; 34import android.content.Context; 35import android.content.Intent; 36import android.content.res.Resources; 37import android.content.res.TypedArray; 38import android.graphics.Bitmap; 39import android.graphics.Camera; 40import android.graphics.Canvas; 41import android.graphics.Matrix; 42import android.graphics.Paint; 43import android.graphics.Point; 44import android.graphics.Rect; 45import android.graphics.RectF; 46import android.graphics.Region.Op; 47import android.graphics.drawable.Drawable; 48import android.os.IBinder; 49import android.os.Parcelable; 50import android.util.AttributeSet; 51import android.util.DisplayMetrics; 52import android.util.Log; 53import android.util.Pair; 54import android.view.Display; 55import android.view.DragEvent; 56import android.view.MotionEvent; 57import android.view.View; 58import android.view.ViewConfiguration; 59import android.view.ViewGroup; 60import android.view.View.MeasureSpec; 61import android.view.animation.AccelerateInterpolator; 62import android.view.animation.DecelerateInterpolator; 63import android.widget.ImageView; 64import android.widget.TextView; 65import android.widget.Toast; 66 67import com.android.launcher.R; 68import com.android.launcher2.FolderIcon.FolderRingAnimator; 69import com.android.launcher2.InstallWidgetReceiver.WidgetMimeTypeHandlerData; 70 71import java.util.ArrayList; 72import java.util.HashSet; 73import java.util.List; 74 75/** 76 * The workspace is a wide area with a wallpaper and a finite number of pages. 77 * Each page contains a number of icons, folders or widgets the user can 78 * interact with. A workspace is meant to be used with a fixed width only. 79 */ 80public class Workspace extends SmoothPagedView 81 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 82 DragController.DragListener, LauncherTransitionable { 83 @SuppressWarnings({"UnusedDeclaration"}) 84 private static final String TAG = "Launcher.Workspace"; 85 86 // Y rotation to apply to the workspace screens 87 private static final float WORKSPACE_ROTATION = 12.5f; 88 private static final float WORKSPACE_OVERSCROLL_ROTATION = 24f; 89 private static float CAMERA_DISTANCE = 6500; 90 91 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 92 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 93 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 94 95 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 96 private static final int ADJACENT_SCREEN_DROP_DURATION = 300; 97 private static final int FLING_THRESHOLD_VELOCITY = 500; 98 99 // These animators are used to fade the children's outlines 100 private ObjectAnimator mChildrenOutlineFadeInAnimation; 101 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 102 private float mChildrenOutlineAlpha = 0; 103 104 // These properties refer to the background protection gradient used for AllApps and Customize 105 private ValueAnimator mBackgroundFadeInAnimation; 106 private ValueAnimator mBackgroundFadeOutAnimation; 107 private Drawable mBackground; 108 boolean mDrawBackground = true; 109 private float mBackgroundAlpha = 0; 110 private float mOverScrollMaxBackgroundAlpha = 0.0f; 111 private int mOverScrollPageIndex = -1; 112 113 private float mWallpaperScrollRatio = 1.0f; 114 115 private final WallpaperManager mWallpaperManager; 116 private IBinder mWindowToken; 117 private static final float WALLPAPER_SCREENS_SPAN = 2f; 118 119 private int mDefaultPage; 120 121 /** 122 * CellInfo for the cell that is currently being dragged 123 */ 124 private CellLayout.CellInfo mDragInfo; 125 126 /** 127 * Target drop area calculated during last acceptDrop call. 128 */ 129 private int[] mTargetCell = new int[2]; 130 131 /** 132 * The CellLayout that is currently being dragged over 133 */ 134 private CellLayout mDragTargetLayout = null; 135 private boolean mDragHasEnteredWorkspace = false; 136 137 private Launcher mLauncher; 138 private IconCache mIconCache; 139 private DragController mDragController; 140 141 // These are temporary variables to prevent having to allocate a new object just to 142 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 143 private int[] mTempCell = new int[2]; 144 private int[] mTempEstimate = new int[2]; 145 private float[] mDragViewVisualCenter = new float[2]; 146 private float[] mTempDragCoordinates = new float[2]; 147 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 148 private float[] mTempDragBottomRightCoordinates = new float[2]; 149 private Matrix mTempInverseMatrix = new Matrix(); 150 151 private SpringLoadedDragController mSpringLoadedDragController; 152 private float mSpringLoadedShrinkFactor; 153 154 private static final int DEFAULT_CELL_COUNT_X = 4; 155 private static final int DEFAULT_CELL_COUNT_Y = 4; 156 157 // State variable that indicates whether the pages are small (ie when you're 158 // in all apps or customize mode) 159 160 enum State { NORMAL, SPRING_LOADED, SMALL }; 161 private State mState = State.NORMAL; 162 private boolean mIsSwitchingState = false; 163 164 boolean mAnimatingViewIntoPlace = false; 165 boolean mIsDragOccuring = false; 166 boolean mChildrenLayersEnabled = true; 167 168 /** Is the user is dragging an item near the edge of a page? */ 169 private boolean mInScrollArea = false; 170 171 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 172 private Bitmap mDragOutline = null; 173 private final Rect mTempRect = new Rect(); 174 private final int[] mTempXY = new int[2]; 175 private float mOverscrollFade = 0; 176 public static final int DRAG_BITMAP_PADDING = 0; 177 178 // Paint used to draw external drop outline 179 private final Paint mExternalDragOutlinePaint = new Paint(); 180 181 // Camera and Matrix used to determine the final position of a neighboring CellLayout 182 private final Matrix mMatrix = new Matrix(); 183 private final Camera mCamera = new Camera(); 184 private final float mTempFloat2[] = new float[2]; 185 186 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 187 int mWallpaperWidth; 188 int mWallpaperHeight; 189 WallpaperOffsetInterpolator mWallpaperOffset; 190 boolean mUpdateWallpaperOffsetImmediately = false; 191 private Runnable mDelayedResizeRunnable; 192 private int mDisplayWidth; 193 private int mDisplayHeight; 194 private int mWallpaperTravelWidth; 195 196 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 197 private static final int FOLDER_CREATION_TIMEOUT = 250; 198 private final Alarm mFolderCreationAlarm = new Alarm(); 199 private FolderRingAnimator mDragFolderRingAnimator = null; 200 private View mLastDragOverView = null; 201 private boolean mCreateUserFolderOnDrop = false; 202 203 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 204 private float mXDown; 205 private float mYDown; 206 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 207 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 208 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 209 210 // Relating to the animation of items being dropped externally 211 public static final int ANIMATE_INTO_POSITION_AND_DISAPPEAR = 0; 212 public static final int ANIMATE_INTO_POSITION_AND_REMAIN = 1; 213 public static final int ANIMATE_INTO_POSITION_AND_RESIZE = 2; 214 public static final int COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION = 3; 215 public static final int CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION = 4; 216 217 // Relating to workspace drag fade out 218 private float mDragFadeOutAlpha; 219 private int mDragFadeOutDuration; 220 221 // These variables are used for storing the initial and final values during workspace animations 222 private int mSavedScrollX; 223 private float mSavedRotationY; 224 private float mSavedTranslationX; 225 private float mCurrentScaleX; 226 private float mCurrentScaleY; 227 private float mCurrentRotationY; 228 private float mCurrentTranslationX; 229 private float mCurrentTranslationY; 230 private float[] mOldTranslationXs; 231 private float[] mOldTranslationYs; 232 private float[] mOldScaleXs; 233 private float[] mOldScaleYs; 234 private float[] mOldBackgroundAlphas; 235 private float[] mOldBackgroundAlphaMultipliers; 236 private float[] mOldAlphas; 237 private float[] mOldRotationYs; 238 private float[] mNewTranslationXs; 239 private float[] mNewTranslationYs; 240 private float[] mNewScaleXs; 241 private float[] mNewScaleYs; 242 private float[] mNewBackgroundAlphas; 243 private float[] mNewBackgroundAlphaMultipliers; 244 private float[] mNewAlphas; 245 private float[] mNewRotationYs; 246 private float mTransitionProgress; 247 248 /** 249 * Used to inflate the Workspace from XML. 250 * 251 * @param context The application's context. 252 * @param attrs The attributes set containing the Workspace's customization values. 253 */ 254 public Workspace(Context context, AttributeSet attrs) { 255 this(context, attrs, 0); 256 } 257 258 /** 259 * Used to inflate the Workspace from XML. 260 * 261 * @param context The application's context. 262 * @param attrs The attributes set containing the Workspace's customization values. 263 * @param defStyle Unused. 264 */ 265 public Workspace(Context context, AttributeSet attrs, int defStyle) { 266 super(context, attrs, defStyle); 267 mContentIsRefreshable = false; 268 269 // With workspace, data is available straight from the get-go 270 setDataIsReady(); 271 272 final Resources res = getResources(); 273 mFadeInAdjacentScreens = res.getBoolean(R.bool.config_workspaceFadeAdjacentScreens); 274 mDragFadeOutAlpha = res.getInteger(R.integer.config_dragFadeOutAlpha) / 100f; 275 mDragFadeOutDuration = res.getInteger(R.integer.config_dragFadeOutDuration); 276 mWallpaperManager = WallpaperManager.getInstance(context); 277 278 int cellCountX = DEFAULT_CELL_COUNT_X; 279 int cellCountY = DEFAULT_CELL_COUNT_Y; 280 281 TypedArray a = context.obtainStyledAttributes(attrs, 282 R.styleable.Workspace, defStyle, 0); 283 284 if (LauncherApplication.isScreenLarge()) { 285 // Determine number of rows/columns dynamically 286 // TODO: This code currently fails on tablets with an aspect ratio < 1.3. 287 // Around that ratio we should make cells the same size in portrait and 288 // landscape 289 TypedArray actionBarSizeTypedArray = 290 context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize }); 291 DisplayMetrics displayMetrics = res.getDisplayMetrics(); 292 final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); 293 final float systemBarHeight = res.getDimension(R.dimen.status_bar_height); 294 final float smallestScreenDim = res.getConfiguration().smallestScreenWidthDp * 295 displayMetrics.density; 296 297 cellCountX = 1; 298 while (CellLayout.widthInPortrait(res, cellCountX + 1) <= smallestScreenDim) { 299 cellCountX++; 300 } 301 302 cellCountY = 1; 303 while (actionBarHeight + CellLayout.heightInLandscape(res, cellCountY + 1) 304 <= smallestScreenDim - systemBarHeight) { 305 cellCountY++; 306 } 307 } 308 309 mSpringLoadedShrinkFactor = 310 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 311 312 // if the value is manually specified, use that instead 313 cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX); 314 cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY); 315 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 316 a.recycle(); 317 318 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 319 setHapticFeedbackEnabled(false); 320 321 mLauncher = (Launcher) context; 322 initWorkspace(); 323 324 // Disable multitouch across the workspace/all apps/customize tray 325 setMotionEventSplittingEnabled(true); 326 } 327 328 // estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each 329 // dimension if unsuccessful 330 public int[] estimateItemSize(int hSpan, int vSpan, 331 ItemInfo itemInfo, boolean springLoaded) { 332 int[] size = new int[2]; 333 if (getChildCount() > 0) { 334 CellLayout cl = (CellLayout) mLauncher.getWorkspace().getChildAt(0); 335 Rect r = estimateItemPosition(cl, itemInfo, 0, 0, hSpan, vSpan); 336 size[0] = r.width(); 337 size[1] = r.height(); 338 if (springLoaded) { 339 size[0] *= mSpringLoadedShrinkFactor; 340 size[1] *= mSpringLoadedShrinkFactor; 341 } 342 return size; 343 } else { 344 size[0] = Integer.MAX_VALUE; 345 size[1] = Integer.MAX_VALUE; 346 return size; 347 } 348 } 349 public Rect estimateItemPosition(CellLayout cl, ItemInfo pendingInfo, 350 int hCell, int vCell, int hSpan, int vSpan) { 351 Rect r = new Rect(); 352 cl.cellToRect(hCell, vCell, hSpan, vSpan, r); 353 return r; 354 } 355 356 public void buildPageHardwareLayers() { 357 if (getWindowToken() != null) { 358 final int childCount = getChildCount(); 359 for (int i = 0; i < childCount; i++) { 360 CellLayout cl = (CellLayout) getChildAt(i); 361 cl.buildChildrenLayer(); 362 } 363 } 364 } 365 366 public void onDragStart(DragSource source, Object info, int dragAction) { 367 mIsDragOccuring = true; 368 updateChildrenLayersEnabled(); 369 mLauncher.lockScreenOrientationOnLargeUI(); 370 371 // Fade out the workspace slightly to highlight the currently dragging item 372 int count = getChildCount(); 373 for (int i = 0; i < count; i++) { 374 CellLayout cl = (CellLayout) getPageAt(i); 375 cl.getChildrenLayout().animate().alpha(mDragFadeOutAlpha) 376 .setInterpolator(new AccelerateInterpolator(1.5f)) 377 .setDuration(mDragFadeOutDuration) 378 .start(); 379 } 380 } 381 382 public void onDragEnd() { 383 mIsDragOccuring = false; 384 updateChildrenLayersEnabled(); 385 mLauncher.unlockScreenOrientationOnLargeUI(); 386 387 // Fade the workspace back in after we have completed dragging 388 int count = getChildCount(); 389 for (int i = 0; i < count; i++) { 390 CellLayout cl = (CellLayout) getPageAt(i); 391 cl.getChildrenLayout().animate().alpha(1f) 392 .setInterpolator(new DecelerateInterpolator(1.5f)) 393 .setDuration(mDragFadeOutDuration) 394 .start(); 395 } 396 } 397 398 /** 399 * Initializes various states for this workspace. 400 */ 401 protected void initWorkspace() { 402 Context context = getContext(); 403 mCurrentPage = mDefaultPage; 404 Launcher.setScreen(mCurrentPage); 405 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 406 mIconCache = app.getIconCache(); 407 mExternalDragOutlinePaint.setAntiAlias(true); 408 setWillNotDraw(false); 409 setChildrenDrawnWithCacheEnabled(true); 410 411 try { 412 final Resources res = getResources(); 413 mBackground = res.getDrawable(R.drawable.apps_customize_bg); 414 } catch (Resources.NotFoundException e) { 415 // In this case, we will skip drawing background protection 416 } 417 418 mWallpaperOffset = new WallpaperOffsetInterpolator(); 419 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 420 mDisplayWidth = display.getWidth(); 421 mDisplayHeight = display.getHeight(); 422 mWallpaperTravelWidth = (int) (mDisplayWidth * 423 wallpaperTravelToScreenWidthRatio(mDisplayWidth, mDisplayHeight)); 424 425 mFlingThresholdVelocity = (int) (FLING_THRESHOLD_VELOCITY * mDensity); 426 427 } 428 429 @Override 430 protected int getScrollMode() { 431 return SmoothPagedView.X_LARGE_MODE; 432 } 433 434 @Override 435 protected void onViewAdded(View child) { 436 super.onViewAdded(child); 437 if (!(child instanceof CellLayout)) { 438 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 439 } 440 CellLayout cl = ((CellLayout) child); 441 cl.setOnInterceptTouchListener(this); 442 cl.setClickable(true); 443 cl.enableHardwareLayers(); 444 } 445 446 /** 447 * @return The open folder on the current screen, or null if there is none 448 */ 449 Folder getOpenFolder() { 450 DragLayer dragLayer = mLauncher.getDragLayer(); 451 int count = dragLayer.getChildCount(); 452 for (int i = 0; i < count; i++) { 453 View child = dragLayer.getChildAt(i); 454 if (child instanceof Folder) { 455 Folder folder = (Folder) child; 456 if (folder.getInfo().opened) 457 return folder; 458 } 459 } 460 return null; 461 } 462 463 boolean isTouchActive() { 464 return mTouchState != TOUCH_STATE_REST; 465 } 466 467 /** 468 * Adds the specified child in the specified screen. The position and dimension of 469 * the child are defined by x, y, spanX and spanY. 470 * 471 * @param child The child to add in one of the workspace's screens. 472 * @param screen The screen in which to add the child. 473 * @param x The X position of the child in the screen's grid. 474 * @param y The Y position of the child in the screen's grid. 475 * @param spanX The number of cells spanned horizontally by the child. 476 * @param spanY The number of cells spanned vertically by the child. 477 */ 478 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY) { 479 addInScreen(child, container, screen, x, y, spanX, spanY, false); 480 } 481 482 /** 483 * Adds the specified child in the specified screen. The position and dimension of 484 * the child are defined by x, y, spanX and spanY. 485 * 486 * @param child The child to add in one of the workspace's screens. 487 * @param screen The screen in which to add the child. 488 * @param x The X position of the child in the screen's grid. 489 * @param y The Y position of the child in the screen's grid. 490 * @param spanX The number of cells spanned horizontally by the child. 491 * @param spanY The number of cells spanned vertically by the child. 492 * @param insert When true, the child is inserted at the beginning of the children list. 493 */ 494 void addInScreen(View child, long container, int screen, int x, int y, int spanX, int spanY, 495 boolean insert) { 496 if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { 497 if (screen < 0 || screen >= getChildCount()) { 498 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 499 + " (was " + screen + "); skipping child"); 500 return; 501 } 502 } 503 504 final CellLayout layout; 505 if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { 506 layout = mLauncher.getHotseat().getLayout(); 507 child.setOnKeyListener(null); 508 509 // Hide folder title in the hotseat 510 if (child instanceof FolderIcon) { 511 ((FolderIcon) child).setTextVisible(false); 512 } 513 514 if (screen < 0) { 515 screen = mLauncher.getHotseat().getOrderInHotseat(x, y); 516 } else { 517 // Note: We do this to ensure that the hotseat is always laid out in the orientation 518 // of the hotseat in order regardless of which orientation they were added 519 x = mLauncher.getHotseat().getCellXFromOrder(screen); 520 y = mLauncher.getHotseat().getCellYFromOrder(screen); 521 } 522 } else { 523 // Show folder title if not in the hotseat 524 if (child instanceof FolderIcon) { 525 ((FolderIcon) child).setTextVisible(true); 526 } 527 528 layout = (CellLayout) getChildAt(screen); 529 child.setOnKeyListener(new IconKeyEventListener()); 530 } 531 532 LayoutParams genericLp = child.getLayoutParams(); 533 CellLayout.LayoutParams lp; 534 if (genericLp == null || !(genericLp instanceof CellLayout.LayoutParams)) { 535 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 536 } else { 537 lp = (CellLayout.LayoutParams) genericLp; 538 lp.cellX = x; 539 lp.cellY = y; 540 lp.cellHSpan = spanX; 541 lp.cellVSpan = spanY; 542 } 543 544 if (spanX < 0 && spanY < 0) { 545 lp.isLockedToGrid = false; 546 } 547 548 // Get the canonical child id to uniquely represent this view in this screen 549 int childId = LauncherModel.getCellLayoutChildId(container, screen, x, y, spanX, spanY); 550 boolean markCellsAsOccupied = !(child instanceof Folder); 551 if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 552 // TODO: This branch occurs when the workspace is adding views 553 // outside of the defined grid 554 // maybe we should be deleting these items from the LauncherModel? 555 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 556 } 557 558 if (!(child instanceof Folder)) { 559 child.setHapticFeedbackEnabled(false); 560 child.setOnLongClickListener(mLongClickListener); 561 } 562 if (child instanceof DropTarget) { 563 mDragController.addDropTarget((DropTarget) child); 564 } 565 } 566 567 /** 568 * Check if the point (x, y) hits a given page. 569 */ 570 private boolean hitsPage(int index, float x, float y) { 571 final View page = getChildAt(index); 572 if (page != null) { 573 float[] localXY = { x, y }; 574 mapPointFromSelfToChild(page, localXY); 575 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 576 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 577 } 578 return false; 579 } 580 581 @Override 582 protected boolean hitsPreviousPage(float x, float y) { 583 // mNextPage is set to INVALID_PAGE whenever we are stationary. 584 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 585 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 586 587 // Only allow tap to next page on large devices, where there's significant margin outside 588 // the active workspace 589 return LauncherApplication.isScreenLarge() && hitsPage(current - 1, x, y); 590 } 591 592 @Override 593 protected boolean hitsNextPage(float x, float y) { 594 // mNextPage is set to INVALID_PAGE whenever we are stationary. 595 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 596 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 597 598 // Only allow tap to next page on large devices, where there's significant margin outside 599 // the active workspace 600 return LauncherApplication.isScreenLarge() && hitsPage(current + 1, x, y); 601 } 602 603 /** 604 * Called directly from a CellLayout (not by the framework), after we've been added as a 605 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 606 * that it should intercept touch events, which is not something that is normally supported. 607 */ 608 @Override 609 public boolean onTouch(View v, MotionEvent event) { 610 return (isSmall() || !isFinishedSwitchingState()); 611 } 612 613 public boolean isSwitchingState() { 614 return mIsSwitchingState; 615 } 616 617 /** This differs from isSwitchingState in that we take into account how far the transition 618 * has completed. */ 619 public boolean isFinishedSwitchingState() { 620 return !mIsSwitchingState || (mTransitionProgress > 0.5f); 621 } 622 623 protected void onWindowVisibilityChanged (int visibility) { 624 mLauncher.onWindowVisibilityChanged(visibility); 625 } 626 627 @Override 628 public boolean dispatchUnhandledMove(View focused, int direction) { 629 if (isSmall() || !isFinishedSwitchingState()) { 630 // when the home screens are shrunken, shouldn't allow side-scrolling 631 return false; 632 } 633 return super.dispatchUnhandledMove(focused, direction); 634 } 635 636 @Override 637 public boolean onInterceptTouchEvent(MotionEvent ev) { 638 switch (ev.getAction() & MotionEvent.ACTION_MASK) { 639 case MotionEvent.ACTION_DOWN: 640 mXDown = ev.getX(); 641 mYDown = ev.getY(); 642 break; 643 case MotionEvent.ACTION_POINTER_UP: 644 case MotionEvent.ACTION_UP: 645 if (mTouchState == TOUCH_STATE_REST) { 646 final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 647 if (!currentPage.lastDownOnOccupiedCell()) { 648 onWallpaperTap(ev); 649 } 650 } 651 } 652 return super.onInterceptTouchEvent(ev); 653 } 654 655 @Override 656 protected void determineScrollingStart(MotionEvent ev) { 657 if (isSmall()) return; 658 if (!isFinishedSwitchingState()) return; 659 660 float deltaX = Math.abs(ev.getX() - mXDown); 661 float deltaY = Math.abs(ev.getY() - mYDown); 662 663 if (Float.compare(deltaX, 0f) == 0) return; 664 665 float slope = deltaY / deltaX; 666 float theta = (float) Math.atan(slope); 667 668 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 669 cancelCurrentPageLongPress(); 670 } 671 672 if (theta > MAX_SWIPE_ANGLE) { 673 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 674 return; 675 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 676 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 677 // increase the touch slop to make it harder to begin scrolling the workspace. This 678 // results in vertically scrolling widgets to more easily. The higher the angle, the 679 // more we increase touch slop. 680 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 681 float extraRatio = (float) 682 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 683 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 684 } else { 685 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 686 super.determineScrollingStart(ev); 687 } 688 } 689 690 @Override 691 protected boolean isScrollingIndicatorEnabled() { 692 return mState != State.SPRING_LOADED; 693 } 694 695 protected void onPageBeginMoving() { 696 super.onPageBeginMoving(); 697 698 if (isHardwareAccelerated()) { 699 updateChildrenLayersEnabled(); 700 } else { 701 if (mNextPage != INVALID_PAGE) { 702 // we're snapping to a particular screen 703 enableChildrenCache(mCurrentPage, mNextPage); 704 } else { 705 // this is when user is actively dragging a particular screen, they might 706 // swipe it either left or right (but we won't advance by more than one screen) 707 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 708 } 709 } 710 711 // Only show page outlines as we pan if we are on large screen 712 if (LauncherApplication.isScreenLarge()) { 713 showOutlines(); 714 } 715 716 // If we are not fading in adjacent screens, we still need to restore the alpha in case the 717 // user scrolls while we are transitioning (should not affect dispatchDraw optimizations) 718 if (!mFadeInAdjacentScreens) { 719 for (int i = 0; i < getChildCount(); ++i) { 720 getPageAt(i).setAlpha(1f); 721 } 722 } 723 724 // Show the scroll indicator as you pan the page 725 showScrollingIndicator(false); 726 } 727 728 protected void onPageEndMoving() { 729 super.onPageEndMoving(); 730 731 if (isHardwareAccelerated()) { 732 updateChildrenLayersEnabled(); 733 } else { 734 clearChildrenCache(); 735 } 736 737 738 if (mDragController.isDragging()) { 739 if (isSmall()) { 740 // If we are in springloaded mode, then force an event to check if the current touch 741 // is under a new page (to scroll to) 742 mDragController.forceMoveEvent(); 743 } 744 } else { 745 // If we are not mid-dragging, hide the page outlines if we are on a large screen 746 if (LauncherApplication.isScreenLarge()) { 747 hideOutlines(); 748 } 749 750 // Hide the scroll indicator as you pan the page 751 if (!mDragController.isDragging()) { 752 hideScrollingIndicator(false); 753 } 754 } 755 mOverScrollMaxBackgroundAlpha = 0.0f; 756 mOverScrollPageIndex = -1; 757 758 if (mDelayedResizeRunnable != null) { 759 mDelayedResizeRunnable.run(); 760 mDelayedResizeRunnable = null; 761 } 762 } 763 764 @Override 765 protected void notifyPageSwitchListener() { 766 super.notifyPageSwitchListener(); 767 Launcher.setScreen(mCurrentPage); 768 }; 769 770 // As a ratio of screen height, the total distance we want the parallax effect to span 771 // horizontally 772 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 773 float aspectRatio = width / (float) height; 774 775 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 776 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 777 // We will use these two data points to extrapolate how much the wallpaper parallax effect 778 // to span (ie travel) at any aspect ratio: 779 780 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 781 final float ASPECT_RATIO_PORTRAIT = 10/16f; 782 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 783 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 784 785 // To find out the desired width at different aspect ratios, we use the following two 786 // formulas, where the coefficient on x is the aspect ratio (width/height): 787 // (16/10)x + y = 1.5 788 // (10/16)x + y = 1.2 789 // We solve for x and y and end up with a final formula: 790 final float x = 791 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 792 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 793 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 794 return x * aspectRatio + y; 795 } 796 797 // The range of scroll values for Workspace 798 private int getScrollRange() { 799 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 800 } 801 802 protected void setWallpaperDimension() { 803 DisplayMetrics displayMetrics = new DisplayMetrics(); 804 mLauncher.getWindowManager().getDefaultDisplay().getRealMetrics(displayMetrics); 805 final int maxDim = Math.max(displayMetrics.widthPixels, displayMetrics.heightPixels); 806 final int minDim = Math.min(displayMetrics.widthPixels, displayMetrics.heightPixels); 807 808 // We need to ensure that there is enough extra space in the wallpaper for the intended 809 // parallax effects 810 if (LauncherApplication.isScreenLarge()) { 811 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 812 mWallpaperHeight = maxDim; 813 } else { 814 mWallpaperWidth = Math.max((int) (minDim * WALLPAPER_SCREENS_SPAN), maxDim); 815 mWallpaperHeight = maxDim; 816 } 817 new Thread("setWallpaperDimension") { 818 public void run() { 819 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 820 } 821 }.start(); 822 } 823 824 public void setVerticalWallpaperOffset(float offset) { 825 mWallpaperOffset.setFinalY(offset); 826 } 827 public float getVerticalWallpaperOffset() { 828 return mWallpaperOffset.getCurrY(); 829 } 830 public void setHorizontalWallpaperOffset(float offset) { 831 mWallpaperOffset.setFinalX(offset); 832 } 833 public float getHorizontalWallpaperOffset() { 834 return mWallpaperOffset.getCurrX(); 835 } 836 837 private float wallpaperOffsetForCurrentScroll() { 838 // The wallpaper travel width is how far, from left to right, the wallpaper will move 839 // at this orientation. On tablets in portrait mode we don't move all the way to the 840 // edges of the wallpaper, or otherwise the parallax effect would be too strong. 841 int wallpaperTravelWidth = mWallpaperWidth; 842 if (LauncherApplication.isScreenLarge()) { 843 wallpaperTravelWidth = mWallpaperTravelWidth; 844 } 845 846 // Set wallpaper offset steps (1 / (number of screens - 1)) 847 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f); 848 849 // For the purposes of computing the scrollRange and overScrollOffset, we assume 850 // that mLayoutScale is 1. This means that when we're in spring-loaded mode, 851 // there's no discrepancy between the wallpaper offset for a given page. 852 float layoutScale = mLayoutScale; 853 mLayoutScale = 1f; 854 int scrollRange = getScrollRange(); 855 856 // Again, we adjust the wallpaper offset to be consistent between values of mLayoutScale 857 float adjustedScrollX = Math.max(0, Math.min(mScrollX, mMaxScrollX)); 858 adjustedScrollX *= mWallpaperScrollRatio; 859 mLayoutScale = layoutScale; 860 861 float scrollProgress = 862 adjustedScrollX / (float) scrollRange; 863 float offsetInDips = wallpaperTravelWidth * scrollProgress + 864 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 865 float offset = offsetInDips / (float) mWallpaperWidth; 866 return offset; 867 } 868 private void syncWallpaperOffsetWithScroll() { 869 final boolean enableWallpaperEffects = isHardwareAccelerated(); 870 if (enableWallpaperEffects) { 871 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 872 } 873 } 874 875 public void updateWallpaperOffsetImmediately() { 876 mUpdateWallpaperOffsetImmediately = true; 877 } 878 879 private void updateWallpaperOffsets() { 880 boolean updateNow = false; 881 boolean keepUpdating = true; 882 if (mUpdateWallpaperOffsetImmediately) { 883 updateNow = true; 884 keepUpdating = false; 885 mWallpaperOffset.jumpToFinal(); 886 mUpdateWallpaperOffsetImmediately = false; 887 } else { 888 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 889 } 890 if (updateNow) { 891 if (mWindowToken != null) { 892 mWallpaperManager.setWallpaperOffsets(mWindowToken, 893 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 894 } 895 } 896 if (keepUpdating) { 897 invalidate(); 898 } 899 } 900 901 @Override 902 protected void updateCurrentPageScroll() { 903 super.updateCurrentPageScroll(); 904 computeWallpaperScrollRatio(mCurrentPage); 905 } 906 907 @Override 908 protected void snapToPage(int whichPage) { 909 super.snapToPage(whichPage); 910 computeWallpaperScrollRatio(whichPage); 911 } 912 913 private void computeWallpaperScrollRatio(int page) { 914 // Here, we determine what the desired scroll would be with and without a layout scale, 915 // and compute a ratio between the two. This allows us to adjust the wallpaper offset 916 // as though there is no layout scale. 917 float layoutScale = mLayoutScale; 918 int scaled = getChildOffset(page) - getRelativeChildOffset(page); 919 mLayoutScale = 1.0f; 920 float unscaled = getChildOffset(page) - getRelativeChildOffset(page); 921 mLayoutScale = layoutScale; 922 if (scaled > 0) { 923 mWallpaperScrollRatio = (1.0f * unscaled) / scaled; 924 } else { 925 mWallpaperScrollRatio = 1f; 926 } 927 } 928 929 class WallpaperOffsetInterpolator { 930 float mFinalHorizontalWallpaperOffset = 0.0f; 931 float mFinalVerticalWallpaperOffset = 0.5f; 932 float mHorizontalWallpaperOffset = 0.0f; 933 float mVerticalWallpaperOffset = 0.5f; 934 long mLastWallpaperOffsetUpdateTime; 935 boolean mIsMovingFast; 936 boolean mOverrideHorizontalCatchupConstant; 937 float mHorizontalCatchupConstant = 0.35f; 938 float mVerticalCatchupConstant = 0.35f; 939 940 public WallpaperOffsetInterpolator() { 941 } 942 943 public void setOverrideHorizontalCatchupConstant(boolean override) { 944 mOverrideHorizontalCatchupConstant = override; 945 } 946 947 public void setHorizontalCatchupConstant(float f) { 948 mHorizontalCatchupConstant = f; 949 } 950 951 public void setVerticalCatchupConstant(float f) { 952 mVerticalCatchupConstant = f; 953 } 954 955 public boolean computeScrollOffset() { 956 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 957 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 958 mIsMovingFast = false; 959 return false; 960 } 961 boolean isLandscape = mDisplayWidth > mDisplayHeight; 962 963 long currentTime = System.currentTimeMillis(); 964 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 965 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 966 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 967 968 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 969 if (!mIsMovingFast && xdiff > 0.07) { 970 mIsMovingFast = true; 971 } 972 973 float fractionToCatchUpIn1MsHorizontal; 974 if (mOverrideHorizontalCatchupConstant) { 975 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 976 } else if (mIsMovingFast) { 977 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 978 } else { 979 // slow 980 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 981 } 982 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 983 984 fractionToCatchUpIn1MsHorizontal /= 33f; 985 fractionToCatchUpIn1MsVertical /= 33f; 986 987 final float UPDATE_THRESHOLD = 0.00001f; 988 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 989 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 990 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 991 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 992 993 // Don't have any lag between workspace and wallpaper on non-large devices 994 if (!LauncherApplication.isScreenLarge() || jumpToFinalValue) { 995 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 996 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 997 } else { 998 float percentToCatchUpVertical = 999 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 1000 float percentToCatchUpHorizontal = 1001 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 1002 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 1003 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 1004 } 1005 1006 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 1007 return true; 1008 } 1009 1010 public float getCurrX() { 1011 return mHorizontalWallpaperOffset; 1012 } 1013 1014 public float getFinalX() { 1015 return mFinalHorizontalWallpaperOffset; 1016 } 1017 1018 public float getCurrY() { 1019 return mVerticalWallpaperOffset; 1020 } 1021 1022 public float getFinalY() { 1023 return mFinalVerticalWallpaperOffset; 1024 } 1025 1026 public void setFinalX(float x) { 1027 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 1028 } 1029 1030 public void setFinalY(float y) { 1031 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 1032 } 1033 1034 public void jumpToFinal() { 1035 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 1036 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 1037 } 1038 } 1039 1040 @Override 1041 public void computeScroll() { 1042 super.computeScroll(); 1043 syncWallpaperOffsetWithScroll(); 1044 } 1045 1046 void showOutlines() { 1047 if (!isSmall() && !mIsSwitchingState) { 1048 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1049 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1050 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 1051 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 1052 mChildrenOutlineFadeInAnimation.start(); 1053 } 1054 } 1055 1056 void hideOutlines() { 1057 if (!isSmall() && !mIsSwitchingState) { 1058 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 1059 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 1060 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 1061 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 1062 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 1063 mChildrenOutlineFadeOutAnimation.start(); 1064 } 1065 } 1066 1067 public void showOutlinesTemporarily() { 1068 if (!mIsPageMoving && !isTouchActive()) { 1069 snapToPage(mCurrentPage); 1070 } 1071 } 1072 1073 public void setChildrenOutlineAlpha(float alpha) { 1074 mChildrenOutlineAlpha = alpha; 1075 for (int i = 0; i < getChildCount(); i++) { 1076 CellLayout cl = (CellLayout) getChildAt(i); 1077 cl.setBackgroundAlpha(alpha); 1078 } 1079 } 1080 1081 public float getChildrenOutlineAlpha() { 1082 return mChildrenOutlineAlpha; 1083 } 1084 1085 void disableBackground() { 1086 mDrawBackground = false; 1087 } 1088 void enableBackground() { 1089 mDrawBackground = true; 1090 } 1091 1092 private void animateBackgroundGradient(float finalAlpha, boolean animated) { 1093 if (mBackground == null) return; 1094 if (mBackgroundFadeInAnimation != null) { 1095 mBackgroundFadeInAnimation.cancel(); 1096 mBackgroundFadeInAnimation = null; 1097 } 1098 if (mBackgroundFadeOutAnimation != null) { 1099 mBackgroundFadeOutAnimation.cancel(); 1100 mBackgroundFadeOutAnimation = null; 1101 } 1102 float startAlpha = getBackgroundAlpha(); 1103 if (finalAlpha != startAlpha) { 1104 if (animated) { 1105 mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(startAlpha, finalAlpha); 1106 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1107 public void onAnimationUpdate(ValueAnimator animation) { 1108 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1109 } 1110 }); 1111 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1112 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1113 mBackgroundFadeOutAnimation.start(); 1114 } else { 1115 setBackgroundAlpha(finalAlpha); 1116 } 1117 } 1118 } 1119 1120 public void setBackgroundAlpha(float alpha) { 1121 if (alpha != mBackgroundAlpha) { 1122 mBackgroundAlpha = alpha; 1123 invalidate(); 1124 } 1125 } 1126 1127 public float getBackgroundAlpha() { 1128 return mBackgroundAlpha; 1129 } 1130 1131 /** 1132 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 1133 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 1134 * as being larger. This method computes what offset the rotated view should be translated 1135 * in order to minimize this perceived gap. 1136 * @param degrees Angle of the view 1137 * @param width Width of the view 1138 * @param height Height of the view 1139 * @return Offset to be used in a View.setTranslationX() call 1140 */ 1141 private float getOffsetXForRotation(float degrees, int width, int height) { 1142 mMatrix.reset(); 1143 mCamera.save(); 1144 mCamera.rotateY(Math.abs(degrees)); 1145 mCamera.getMatrix(mMatrix); 1146 mCamera.restore(); 1147 1148 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 1149 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 1150 mTempFloat2[0] = width; 1151 mTempFloat2[1] = height; 1152 mMatrix.mapPoints(mTempFloat2); 1153 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 1154 } 1155 1156 float backgroundAlphaInterpolator(float r) { 1157 float pivotA = 0.1f; 1158 float pivotB = 0.4f; 1159 if (r < pivotA) { 1160 return 0; 1161 } else if (r > pivotB) { 1162 return 1.0f; 1163 } else { 1164 return (r - pivotA)/(pivotB - pivotA); 1165 } 1166 } 1167 1168 float overScrollBackgroundAlphaInterpolator(float r) { 1169 float threshold = 0.08f; 1170 1171 if (r > mOverScrollMaxBackgroundAlpha) { 1172 mOverScrollMaxBackgroundAlpha = r; 1173 } else if (r < mOverScrollMaxBackgroundAlpha) { 1174 r = mOverScrollMaxBackgroundAlpha; 1175 } 1176 1177 return Math.min(r / threshold, 1.0f); 1178 } 1179 1180 private void screenScrolledLargeUI(int screenCenter) { 1181 if (isSwitchingState()) return; 1182 boolean isInOverscroll = false; 1183 for (int i = 0; i < getChildCount(); i++) { 1184 CellLayout cl = (CellLayout) getChildAt(i); 1185 if (cl != null) { 1186 float scrollProgress = getScrollProgress(screenCenter, cl, i); 1187 float rotation = WORKSPACE_ROTATION * scrollProgress; 1188 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1189 1190 // If the current page (i) is being over scrolled, we use a different 1191 // set of rules for setting the background alpha multiplier. 1192 if (!isSmall()) { 1193 if ((mOverScrollX < 0 && i == 0) || (mOverScrollX > mMaxScrollX && 1194 i == getChildCount() -1)) { 1195 isInOverscroll = true; 1196 rotation *= -1; 1197 cl.setBackgroundAlphaMultiplier( 1198 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 1199 mOverScrollPageIndex = i; 1200 cl.setOverScrollAmount(Math.abs(scrollProgress), i == 0); 1201 cl.setPivotX(cl.getMeasuredWidth() * (i == 0 ? 0.75f : 0.25f)); 1202 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1203 cl.setOverscrollTransformsDirty(true); 1204 } else if (mOverScrollPageIndex != i) { 1205 cl.setBackgroundAlphaMultiplier( 1206 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1207 } 1208 } 1209 cl.setTranslationX(translationX); 1210 cl.setRotationY(rotation); 1211 if (mFadeInAdjacentScreens && !isSmall()) { 1212 float alpha = 1 - Math.abs(scrollProgress); 1213 cl.setAlpha(alpha); 1214 } 1215 } 1216 } 1217 if (!isSwitchingState() && !isInOverscroll) { 1218 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1219 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1220 } 1221 invalidate(); 1222 } 1223 1224 private void screenScrolledStandardUI(int screenCenter) { 1225 if (mOverScrollX < 0 || mOverScrollX > mMaxScrollX) { 1226 int index = mOverScrollX < 0 ? 0 : getChildCount() - 1; 1227 CellLayout cl = (CellLayout) getChildAt(index); 1228 float scrollProgress = getScrollProgress(screenCenter, cl, index); 1229 cl.setOverScrollAmount(Math.abs(scrollProgress), index == 0); 1230 float rotation = - WORKSPACE_OVERSCROLL_ROTATION * scrollProgress; 1231 cl.setCameraDistance(mDensity * CAMERA_DISTANCE); 1232 cl.setPivotX(cl.getMeasuredWidth() * (index == 0 ? 0.75f : 0.25f)); 1233 cl.setPivotY(cl.getMeasuredHeight() * 0.5f); 1234 cl.setRotationY(rotation); 1235 cl.setOverscrollTransformsDirty(true); 1236 setFadeForOverScroll(Math.abs(scrollProgress)); 1237 } else { 1238 if (mOverscrollFade != 0) { 1239 setFadeForOverScroll(0); 1240 } 1241 // We don't want to mess with the translations during transitions 1242 if (!isSwitchingState()) { 1243 ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); 1244 ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); 1245 } 1246 } 1247 } 1248 1249 @Override 1250 protected void screenScrolled(int screenCenter) { 1251 if (LauncherApplication.isScreenLarge()) { 1252 // We don't call super.screenScrolled() here because we handle the adjacent pages alpha 1253 // ourselves (for efficiency), and there are no scrolling indicators to update. 1254 screenScrolledLargeUI(screenCenter); 1255 } else { 1256 super.screenScrolled(screenCenter); 1257 screenScrolledStandardUI(screenCenter); 1258 } 1259 } 1260 1261 @Override 1262 protected void overScroll(float amount) { 1263 if (LauncherApplication.isScreenLarge()) { 1264 dampedOverScroll(amount); 1265 } else { 1266 acceleratedOverScroll(amount); 1267 } 1268 } 1269 1270 protected void onAttachedToWindow() { 1271 super.onAttachedToWindow(); 1272 mWindowToken = getWindowToken(); 1273 computeScroll(); 1274 mDragController.setWindowToken(mWindowToken); 1275 } 1276 1277 protected void onDetachedFromWindow() { 1278 mWindowToken = null; 1279 } 1280 1281 @Override 1282 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1283 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1284 mUpdateWallpaperOffsetImmediately = true; 1285 } 1286 super.onLayout(changed, left, top, right, bottom); 1287 } 1288 1289 @Override 1290 protected void onDraw(Canvas canvas) { 1291 updateWallpaperOffsets(); 1292 1293 // Draw the background gradient if necessary 1294 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1295 int alpha = (int) (mBackgroundAlpha * 255); 1296 mBackground.setAlpha(alpha); 1297 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1298 getMeasuredHeight()); 1299 mBackground.draw(canvas); 1300 } 1301 1302 super.onDraw(canvas); 1303 } 1304 1305 boolean isDrawingBackgroundGradient() { 1306 return (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground); 1307 } 1308 1309 @Override 1310 protected void dispatchDraw(Canvas canvas) { 1311 super.dispatchDraw(canvas); 1312 1313 if (mInScrollArea && !LauncherApplication.isScreenLarge()) { 1314 final int width = getWidth(); 1315 final int height = getHeight(); 1316 final int pageHeight = getChildAt(0).getHeight(); 1317 1318 // Set the height of the outline to be the height of the page 1319 final int offset = (height - pageHeight - mPaddingTop - mPaddingBottom) / 2; 1320 final int paddingTop = mPaddingTop + offset; 1321 final int paddingBottom = mPaddingBottom + offset; 1322 1323 final int page = (mNextPage != INVALID_PAGE ? mNextPage : mCurrentPage); 1324 final CellLayout leftPage = (CellLayout) getChildAt(page - 1); 1325 final CellLayout rightPage = (CellLayout) getChildAt(page + 1); 1326 1327 if (leftPage != null && leftPage.getIsDragOverlapping()) { 1328 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left_holo); 1329 d.setBounds(mScrollX, paddingTop, mScrollX + d.getIntrinsicWidth(), 1330 height - paddingBottom); 1331 d.draw(canvas); 1332 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 1333 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right_holo); 1334 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), paddingTop, mScrollX + width, 1335 height - paddingBottom); 1336 d.draw(canvas); 1337 } 1338 } 1339 } 1340 1341 @Override 1342 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1343 if (!mLauncher.isAllAppsVisible()) { 1344 final Folder openFolder = getOpenFolder(); 1345 if (openFolder != null) { 1346 return openFolder.requestFocus(direction, previouslyFocusedRect); 1347 } else { 1348 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1349 } 1350 } 1351 return false; 1352 } 1353 1354 @Override 1355 public int getDescendantFocusability() { 1356 if (isSmall()) { 1357 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1358 } 1359 return super.getDescendantFocusability(); 1360 } 1361 1362 @Override 1363 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1364 if (!mLauncher.isAllAppsVisible()) { 1365 final Folder openFolder = getOpenFolder(); 1366 if (openFolder != null) { 1367 openFolder.addFocusables(views, direction); 1368 } else { 1369 super.addFocusables(views, direction, focusableMode); 1370 } 1371 } 1372 } 1373 1374 public boolean isSmall() { 1375 return mState == State.SMALL || mState == State.SPRING_LOADED; 1376 } 1377 1378 void enableChildrenCache(int fromPage, int toPage) { 1379 if (fromPage > toPage) { 1380 final int temp = fromPage; 1381 fromPage = toPage; 1382 toPage = temp; 1383 } 1384 1385 final int screenCount = getChildCount(); 1386 1387 fromPage = Math.max(fromPage, 0); 1388 toPage = Math.min(toPage, screenCount - 1); 1389 1390 for (int i = fromPage; i <= toPage; i++) { 1391 final CellLayout layout = (CellLayout) getChildAt(i); 1392 layout.setChildrenDrawnWithCacheEnabled(true); 1393 layout.setChildrenDrawingCacheEnabled(true); 1394 } 1395 } 1396 1397 void clearChildrenCache() { 1398 final int screenCount = getChildCount(); 1399 for (int i = 0; i < screenCount; i++) { 1400 final CellLayout layout = (CellLayout) getChildAt(i); 1401 layout.setChildrenDrawnWithCacheEnabled(false); 1402 // In software mode, we don't want the items to continue to be drawn into bitmaps 1403 if (!isHardwareAccelerated()) { 1404 layout.setChildrenDrawingCacheEnabled(false); 1405 } 1406 } 1407 } 1408 1409 private void updateChildrenLayersEnabled() { 1410 boolean small = isSmall() || mIsSwitchingState; 1411 boolean dragging = mAnimatingViewIntoPlace || mIsDragOccuring; 1412 boolean enableChildrenLayers = small || dragging || isPageMoving(); 1413 1414 if (enableChildrenLayers != mChildrenLayersEnabled) { 1415 mChildrenLayersEnabled = enableChildrenLayers; 1416 for (int i = 0; i < getPageCount(); i++) { 1417 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(mChildrenLayersEnabled); 1418 } 1419 } 1420 } 1421 1422 protected void onWallpaperTap(MotionEvent ev) { 1423 final int[] position = mTempCell; 1424 getLocationOnScreen(position); 1425 1426 int pointerIndex = ev.getActionIndex(); 1427 position[0] += (int) ev.getX(pointerIndex); 1428 position[1] += (int) ev.getY(pointerIndex); 1429 1430 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1431 ev.getAction() == MotionEvent.ACTION_UP 1432 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1433 position[0], position[1], 0, null); 1434 } 1435 1436 /* 1437 * This interpolator emulates the rate at which the perceived scale of an object changes 1438 * as its distance from a camera increases. When this interpolator is applied to a scale 1439 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1440 * from the camera. 1441 */ 1442 static class ZInterpolator implements TimeInterpolator { 1443 private float focalLength; 1444 1445 public ZInterpolator(float foc) { 1446 focalLength = foc; 1447 } 1448 1449 public float getInterpolation(float input) { 1450 return (1.0f - focalLength / (focalLength + input)) / 1451 (1.0f - focalLength / (focalLength + 1.0f)); 1452 } 1453 } 1454 1455 /* 1456 * The exact reverse of ZInterpolator. 1457 */ 1458 static class InverseZInterpolator implements TimeInterpolator { 1459 private ZInterpolator zInterpolator; 1460 public InverseZInterpolator(float foc) { 1461 zInterpolator = new ZInterpolator(foc); 1462 } 1463 public float getInterpolation(float input) { 1464 return 1 - zInterpolator.getInterpolation(1 - input); 1465 } 1466 } 1467 1468 /* 1469 * ZInterpolator compounded with an ease-out. 1470 */ 1471 static class ZoomOutInterpolator implements TimeInterpolator { 1472 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(0.75f); 1473 private final ZInterpolator zInterpolator = new ZInterpolator(0.13f); 1474 1475 public float getInterpolation(float input) { 1476 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1477 } 1478 } 1479 1480 /* 1481 * InvereZInterpolator compounded with an ease-out. 1482 */ 1483 static class ZoomInInterpolator implements TimeInterpolator { 1484 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1485 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1486 1487 public float getInterpolation(float input) { 1488 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1489 } 1490 } 1491 1492 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1493 1494 /* 1495 * 1496 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1497 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1498 * 1499 * These methods mark the appropriate pages as accepting drops (which alters their visual 1500 * appearance). 1501 * 1502 */ 1503 public void onDragStartedWithItem(View v) { 1504 final Canvas canvas = new Canvas(); 1505 1506 // The outline is used to visualize where the item will land if dropped 1507 mDragOutline = createDragOutline(v, canvas, DRAG_BITMAP_PADDING); 1508 } 1509 1510 public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, Paint alphaClipPaint) { 1511 final Canvas canvas = new Canvas(); 1512 1513 int[] size = estimateItemSize(info.spanX, info.spanY, info, false); 1514 1515 // The outline is used to visualize where the item will land if dropped 1516 mDragOutline = createDragOutline(b, canvas, DRAG_BITMAP_PADDING, size[0], 1517 size[1], alphaClipPaint); 1518 } 1519 1520 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1521 // never dragged over 1522 public void onDragStopped(boolean success) { 1523 // In the success case, DragController has already called onDragExit() 1524 if (!success) { 1525 doDragExit(null); 1526 } 1527 } 1528 1529 public void exitWidgetResizeMode() { 1530 DragLayer dragLayer = mLauncher.getDragLayer(); 1531 dragLayer.clearAllResizeFrames(); 1532 } 1533 1534 private void initAnimationArrays() { 1535 final int childCount = getChildCount(); 1536 if (mOldTranslationXs != null) return; 1537 mOldTranslationXs = new float[childCount]; 1538 mOldTranslationYs = new float[childCount]; 1539 mOldScaleXs = new float[childCount]; 1540 mOldScaleYs = new float[childCount]; 1541 mOldBackgroundAlphas = new float[childCount]; 1542 mOldBackgroundAlphaMultipliers = new float[childCount]; 1543 mOldAlphas = new float[childCount]; 1544 mOldRotationYs = new float[childCount]; 1545 mNewTranslationXs = new float[childCount]; 1546 mNewTranslationYs = new float[childCount]; 1547 mNewScaleXs = new float[childCount]; 1548 mNewScaleYs = new float[childCount]; 1549 mNewBackgroundAlphas = new float[childCount]; 1550 mNewBackgroundAlphaMultipliers = new float[childCount]; 1551 mNewAlphas = new float[childCount]; 1552 mNewRotationYs = new float[childCount]; 1553 } 1554 1555 Animator getChangeStateAnimation(final State state, boolean animated) { 1556 return getChangeStateAnimation(state, animated, 0); 1557 } 1558 1559 Animator getChangeStateAnimation(final State state, boolean animated, int delay) { 1560 if (mState == state) { 1561 return null; 1562 } 1563 1564 // Initialize animation arrays for the first time if necessary 1565 initAnimationArrays(); 1566 1567 AnimatorSet anim = animated ? new AnimatorSet() : null; 1568 1569 // Stop any scrolling, move to the current page right away 1570 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1571 1572 final State oldState = mState; 1573 final boolean oldStateIsNormal = (oldState == State.NORMAL); 1574 final boolean oldStateIsSmall = (oldState == State.SMALL); 1575 mState = state; 1576 final boolean stateIsNormal = (state == State.NORMAL); 1577 final boolean stateIsSpringLoaded = (state == State.SPRING_LOADED); 1578 final boolean stateIsSmall = (state == State.SMALL); 1579 float finalScaleFactor = 1.0f; 1580 float finalBackgroundAlpha = stateIsSpringLoaded ? 1.0f : 0f; 1581 float translationX = 0; 1582 float translationY = 0; 1583 boolean zoomIn = true; 1584 1585 if (state != State.NORMAL) { 1586 finalScaleFactor = mSpringLoadedShrinkFactor - (stateIsSmall ? 0.1f : 0); 1587 if (oldStateIsNormal && stateIsSmall) { 1588 zoomIn = false; 1589 setLayoutScale(finalScaleFactor); 1590 updateChildrenLayersEnabled(); 1591 } else { 1592 finalBackgroundAlpha = 1.0f; 1593 setLayoutScale(finalScaleFactor); 1594 } 1595 } else { 1596 setLayoutScale(1.0f); 1597 } 1598 1599 final int duration = zoomIn ? 1600 getResources().getInteger(R.integer.config_workspaceUnshrinkTime) : 1601 getResources().getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1602 for (int i = 0; i < getChildCount(); i++) { 1603 final CellLayout cl = (CellLayout) getChildAt(i); 1604 float rotation = 0f; 1605 float initialAlpha = cl.getAlpha(); 1606 float finalAlphaMultiplierValue = 1f; 1607 float finalAlpha = (!mFadeInAdjacentScreens || stateIsSpringLoaded || 1608 (i == mCurrentPage)) ? 1f : 0f; 1609 1610 // Determine the pages alpha during the state transition 1611 if ((oldStateIsSmall && stateIsNormal) || 1612 (oldStateIsNormal && stateIsSmall)) { 1613 // To/from workspace - only show the current page unless the transition is not 1614 // animated and the animation end callback below doesn't run 1615 if (i == mCurrentPage || !animated) { 1616 finalAlpha = 1f; 1617 finalAlphaMultiplierValue = 0f; 1618 } else { 1619 initialAlpha = 0f; 1620 finalAlpha = 0f; 1621 } 1622 } 1623 1624 // Update the rotation of the screen (don't apply rotation on Phone UI) 1625 if (LauncherApplication.isScreenLarge()) { 1626 if (i < mCurrentPage) { 1627 rotation = WORKSPACE_ROTATION; 1628 } else if (i > mCurrentPage) { 1629 rotation = -WORKSPACE_ROTATION; 1630 } 1631 } 1632 1633 // If the screen is not xlarge, then don't rotate the CellLayouts 1634 // NOTE: If we don't update the side pages alpha, then we should not hide the side 1635 // pages. see unshrink(). 1636 if (LauncherApplication.isScreenLarge()) { 1637 translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1638 } 1639 1640 mOldAlphas[i] = initialAlpha; 1641 mNewAlphas[i] = finalAlpha; 1642 if (animated) { 1643 mOldTranslationXs[i] = cl.getTranslationX(); 1644 mOldTranslationYs[i] = cl.getTranslationY(); 1645 mOldScaleXs[i] = cl.getScaleX(); 1646 mOldScaleYs[i] = cl.getScaleY(); 1647 mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1648 mOldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1649 mOldRotationYs[i] = cl.getRotationY(); 1650 1651 mNewTranslationXs[i] = translationX; 1652 mNewTranslationYs[i] = translationY; 1653 mNewScaleXs[i] = finalScaleFactor; 1654 mNewScaleYs[i] = finalScaleFactor; 1655 mNewBackgroundAlphas[i] = finalBackgroundAlpha; 1656 mNewBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1657 mNewRotationYs[i] = rotation; 1658 } else { 1659 cl.setTranslationX(translationX); 1660 cl.setTranslationY(translationY); 1661 cl.setScaleX(finalScaleFactor); 1662 cl.setScaleY(finalScaleFactor); 1663 cl.setBackgroundAlpha(finalBackgroundAlpha); 1664 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1665 cl.setAlpha(finalAlpha); 1666 cl.setRotationY(rotation); 1667 } 1668 } 1669 1670 if (animated) { 1671 for (int index = 0; index < getChildCount(); index++) { 1672 final int i = index; 1673 final CellLayout cl = (CellLayout) getChildAt(i); 1674 if (mOldAlphas[i] == 0 && mNewAlphas[i] == 0) { 1675 cl.setTranslationX(mNewTranslationXs[i]); 1676 cl.setTranslationY(mNewTranslationYs[i]); 1677 cl.setScaleX(mNewScaleXs[i]); 1678 cl.setScaleY(mNewScaleYs[i]); 1679 cl.setBackgroundAlpha(mNewBackgroundAlphas[i]); 1680 cl.setBackgroundAlphaMultiplier(mNewBackgroundAlphaMultipliers[i]); 1681 cl.setAlpha(mNewAlphas[i]); 1682 cl.setRotationY(mNewRotationYs[i]); 1683 } else { 1684 LauncherViewPropertyAnimator a = new LauncherViewPropertyAnimator(cl); 1685 a.translationX(mNewTranslationXs[i]) 1686 .translationY(mNewTranslationYs[i]) 1687 .scaleX(mNewScaleXs[i]) 1688 .scaleY(mNewScaleYs[i]) 1689 .setDuration(duration) 1690 .setInterpolator(mZoomInInterpolator); 1691 if (mOldAlphas[i] != mNewAlphas[i]) { 1692 a.alpha(mNewAlphas[i]); 1693 } 1694 anim.play(a); 1695 if (mOldRotationYs[i] != 0 || mNewRotationYs[i] != 0) { 1696 ValueAnimator rotate = ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1697 rotate.setInterpolator(new DecelerateInterpolator(2.0f)); 1698 rotate.addUpdateListener(new LauncherAnimatorUpdateListener() { 1699 public void onAnimationUpdate(float a, float b) { 1700 cl.setRotationY(a * mOldRotationYs[i] + b * mNewRotationYs[i]); 1701 } 1702 }); 1703 anim.play(rotate); 1704 } 1705 if (mOldBackgroundAlphas[i] != 0 || 1706 mNewBackgroundAlphas[i] != 0 || 1707 mOldBackgroundAlphaMultipliers[i] != 0 || 1708 mNewBackgroundAlphaMultipliers[i] != 0) { 1709 ValueAnimator bgAnim = ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1710 bgAnim.setInterpolator(mZoomInInterpolator); 1711 bgAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1712 public void onAnimationUpdate(float a, float b) { 1713 cl.setBackgroundAlpha( 1714 a * mOldBackgroundAlphas[i] + 1715 b * mNewBackgroundAlphas[i]); 1716 cl.setBackgroundAlphaMultiplier( 1717 a * mOldBackgroundAlphaMultipliers[i] + 1718 b * mNewBackgroundAlphaMultipliers[i]); 1719 } 1720 }); 1721 anim.play(bgAnim); 1722 } 1723 } 1724 } 1725 anim.setStartDelay(delay); 1726 } 1727 1728 if (stateIsSpringLoaded) { 1729 // Right now we're covered by Apps Customize 1730 // Show the background gradient immediately, so the gradient will 1731 // be showing once AppsCustomize disappears 1732 animateBackgroundGradient(getResources().getInteger( 1733 R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, false); 1734 } else { 1735 // Fade the background gradient away 1736 animateBackgroundGradient(0f, true); 1737 } 1738 return anim; 1739 } 1740 1741 @Override 1742 public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) { 1743 mIsSwitchingState = true; 1744 } 1745 1746 @Override 1747 public void onLauncherTransitionStep(Launcher l, float t) { 1748 mTransitionProgress = t; 1749 } 1750 1751 @Override 1752 public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) { 1753 mIsSwitchingState = false; 1754 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 1755 updateChildrenLayersEnabled(); 1756 // The code in getChangeStateAnimation to determine initialAlpha and finalAlpha will ensure 1757 // ensure that only the current page is visible during (and subsequently, after) the 1758 // transition animation. If fade adjacent pages is disabled, then re-enable the page 1759 // visibility after the transition animation. 1760 if (!mFadeInAdjacentScreens) { 1761 for (int i = 0; i < getChildCount(); i++) { 1762 final CellLayout cl = (CellLayout) getChildAt(i); 1763 cl.setAlpha(1f); 1764 } 1765 } 1766 } 1767 1768 @Override 1769 public View getContent() { 1770 return this; 1771 } 1772 1773 /** 1774 * Draw the View v into the given Canvas. 1775 * 1776 * @param v the view to draw 1777 * @param destCanvas the canvas to draw on 1778 * @param padding the horizontal and vertical padding to use when drawing 1779 */ 1780 private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { 1781 final Rect clipRect = mTempRect; 1782 v.getDrawingRect(clipRect); 1783 1784 boolean textVisible = false; 1785 1786 destCanvas.save(); 1787 if (v instanceof TextView && pruneToDrawable) { 1788 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1789 clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); 1790 destCanvas.translate(padding / 2, padding / 2); 1791 d.draw(destCanvas); 1792 } else { 1793 if (v instanceof FolderIcon) { 1794 // For FolderIcons the text can bleed into the icon area, and so we need to 1795 // hide the text completely (which can't be achieved by clipping). 1796 if (((FolderIcon) v).getTextVisible()) { 1797 ((FolderIcon) v).setTextVisible(false); 1798 textVisible = true; 1799 } 1800 } else if (v instanceof BubbleTextView) { 1801 final BubbleTextView tv = (BubbleTextView) v; 1802 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1803 tv.getLayout().getLineTop(0); 1804 } else if (v instanceof TextView) { 1805 final TextView tv = (TextView) v; 1806 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1807 tv.getLayout().getLineTop(0); 1808 } 1809 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1810 destCanvas.clipRect(clipRect, Op.REPLACE); 1811 v.draw(destCanvas); 1812 1813 // Restore text visibility of FolderIcon if necessary 1814 if (textVisible) { 1815 ((FolderIcon) v).setTextVisible(true); 1816 } 1817 } 1818 destCanvas.restore(); 1819 } 1820 1821 /** 1822 * Returns a new bitmap to show when the given View is being dragged around. 1823 * Responsibility for the bitmap is transferred to the caller. 1824 */ 1825 public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1826 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1827 Bitmap b; 1828 1829 if (v instanceof TextView) { 1830 Drawable d = ((TextView) v).getCompoundDrawables()[1]; 1831 b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, 1832 d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); 1833 } else { 1834 b = Bitmap.createBitmap( 1835 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1836 } 1837 1838 canvas.setBitmap(b); 1839 drawDragView(v, canvas, padding, true); 1840 canvas.setBitmap(null); 1841 1842 return b; 1843 } 1844 1845 /** 1846 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1847 * Responsibility for the bitmap is transferred to the caller. 1848 */ 1849 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1850 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1851 final Bitmap b = Bitmap.createBitmap( 1852 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1853 1854 canvas.setBitmap(b); 1855 drawDragView(v, canvas, padding, true); 1856 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1857 canvas.setBitmap(null); 1858 return b; 1859 } 1860 1861 /** 1862 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1863 * Responsibility for the bitmap is transferred to the caller. 1864 */ 1865 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h, 1866 Paint alphaClipPaint) { 1867 final int outlineColor = getResources().getColor(android.R.color.holo_blue_light); 1868 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1869 canvas.setBitmap(b); 1870 1871 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 1872 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 1873 (h - padding) / (float) orig.getHeight()); 1874 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 1875 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 1876 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 1877 1878 // center the image 1879 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 1880 1881 canvas.drawBitmap(orig, src, dst, null); 1882 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor, 1883 alphaClipPaint); 1884 canvas.setBitmap(null); 1885 1886 return b; 1887 } 1888 1889 /** 1890 * Creates a drag outline to represent a drop (that we don't have the actual information for 1891 * yet). May be changed in the future to alter the drop outline slightly depending on the 1892 * clip description mime data. 1893 */ 1894 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 1895 Resources r = getResources(); 1896 final int outlineColor = r.getColor(android.R.color.holo_blue_light); 1897 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 1898 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 1899 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 1900 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 1901 final Bitmap b = Bitmap.createBitmap( 1902 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 1903 1904 canvas.setBitmap(b); 1905 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 1906 rectRadius, rectRadius, mExternalDragOutlinePaint); 1907 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1908 canvas.setBitmap(null); 1909 return b; 1910 } 1911 1912 void startDrag(CellLayout.CellInfo cellInfo) { 1913 View child = cellInfo.cell; 1914 1915 // Make sure the drag was started by a long press as opposed to a long click. 1916 if (!child.isInTouchMode()) { 1917 return; 1918 } 1919 1920 mDragInfo = cellInfo; 1921 child.setVisibility(INVISIBLE); 1922 1923 child.clearFocus(); 1924 child.setPressed(false); 1925 1926 final Canvas canvas = new Canvas(); 1927 1928 // The outline is used to visualize where the item will land if dropped 1929 mDragOutline = createDragOutline(child, canvas, DRAG_BITMAP_PADDING); 1930 beginDragShared(child, this); 1931 } 1932 1933 public void beginDragShared(View child, DragSource source) { 1934 Resources r = getResources(); 1935 1936 // The drag bitmap follows the touch point around on the screen 1937 final Bitmap b = createDragBitmap(child, new Canvas(), DRAG_BITMAP_PADDING); 1938 1939 final int bmpWidth = b.getWidth(); 1940 1941 mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 1942 final int dragLayerX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 1943 int dragLayerY = mTempXY[1] - DRAG_BITMAP_PADDING / 2; 1944 1945 Point dragVisualizeOffset = null; 1946 Rect dragRect = null; 1947 if (child instanceof BubbleTextView || child instanceof PagedViewIcon) { 1948 int iconSize = r.getDimensionPixelSize(R.dimen.app_icon_size); 1949 int iconPaddingTop = r.getDimensionPixelSize(R.dimen.app_icon_padding_top); 1950 int top = child.getPaddingTop(); 1951 int left = (bmpWidth - iconSize) / 2; 1952 int right = left + iconSize; 1953 int bottom = top + iconSize; 1954 dragLayerY += top; 1955 // Note: The drag region is used to calculate drag layer offsets, but the 1956 // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. 1957 dragVisualizeOffset = new Point(-DRAG_BITMAP_PADDING / 2, 1958 iconPaddingTop - DRAG_BITMAP_PADDING / 2); 1959 dragRect = new Rect(left, top, right, bottom); 1960 } else if (child instanceof FolderIcon) { 1961 int previewSize = r.getDimensionPixelSize(R.dimen.folder_preview_size); 1962 dragRect = new Rect(0, 0, child.getWidth(), previewSize); 1963 } 1964 1965 // Clear the pressed state if necessary 1966 if (child instanceof BubbleTextView) { 1967 BubbleTextView icon = (BubbleTextView) child; 1968 icon.clearPressedOrFocusedBackground(); 1969 } 1970 1971 mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), 1972 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect, 1f); 1973 b.recycle(); 1974 1975 // Show the scrolling indicator when you pick up an item 1976 showScrollingIndicator(false); 1977 } 1978 1979 void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, int screen, 1980 int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { 1981 View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); 1982 1983 final int[] cellXY = new int[2]; 1984 target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1985 addInScreen(view, container, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1986 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, cellXY[0], 1987 cellXY[1]); 1988 } 1989 1990 public boolean transitionStateShouldAllowDrop() { 1991 return ((!isSwitchingState() || mTransitionProgress > 0.5f) && mState != State.SMALL); 1992 } 1993 1994 /** 1995 * {@inheritDoc} 1996 */ 1997 public boolean acceptDrop(DragObject d) { 1998 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1999 if (d.dragSource != this) { 2000 // Don't accept the drop if we're not over a screen at time of drop 2001 if (mDragTargetLayout == null) { 2002 return false; 2003 } 2004 if (!transitionStateShouldAllowDrop()) return false; 2005 2006 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2007 d.dragView, mDragViewVisualCenter); 2008 2009 // We want the point to be mapped to the dragTarget. 2010 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2011 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2012 } else { 2013 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2014 } 2015 2016 int spanX = 1; 2017 int spanY = 1; 2018 View ignoreView = null; 2019 if (mDragInfo != null) { 2020 final CellLayout.CellInfo dragCellInfo = mDragInfo; 2021 spanX = dragCellInfo.spanX; 2022 spanY = dragCellInfo.spanY; 2023 ignoreView = dragCellInfo.cell; 2024 } else { 2025 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 2026 spanX = dragInfo.spanX; 2027 spanY = dragInfo.spanY; 2028 } 2029 2030 int minSpanX = spanX; 2031 int minSpanY = spanY; 2032 if (d.dragInfo instanceof PendingAddWidgetInfo) { 2033 minSpanX = ((PendingAddWidgetInfo) d.dragInfo).minSpanX; 2034 minSpanY = ((PendingAddWidgetInfo) d.dragInfo).minSpanY; 2035 } 2036 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2037 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, mDragTargetLayout, 2038 mTargetCell); 2039 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, true)) { 2040 return true; 2041 } 2042 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, 2043 mTargetCell)) { 2044 return true; 2045 } 2046 2047 // Don't accept the drop if there's no room for the item 2048 if (!mDragTargetLayout.findCellForSpanIgnoring(null, minSpanX, minSpanY, ignoreView)) { 2049 // Don't show the message if we are dropping on the AllApps button and the hotseat 2050 // is full 2051 if (mTargetCell != null && mLauncher.isHotseatLayout(mDragTargetLayout)) { 2052 Hotseat hotseat = mLauncher.getHotseat(); 2053 if (Hotseat.isAllAppsButtonRank( 2054 hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { 2055 return false; 2056 } 2057 } 2058 2059 mLauncher.showOutOfSpaceMessage(); 2060 return false; 2061 } 2062 } 2063 return true; 2064 } 2065 2066 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, 2067 boolean considerTimeout) { 2068 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2069 2070 boolean hasntMoved = false; 2071 if (mDragInfo != null) { 2072 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2073 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2074 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2075 } 2076 2077 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2078 return false; 2079 } 2080 2081 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2082 boolean willBecomeShortcut = 2083 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2084 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2085 2086 return (aboveShortcut && willBecomeShortcut); 2087 } 2088 2089 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell) { 2090 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2091 if (dropOverView instanceof FolderIcon) { 2092 FolderIcon fi = (FolderIcon) dropOverView; 2093 if (fi.acceptDrop(dragInfo)) { 2094 return true; 2095 } 2096 } 2097 return false; 2098 } 2099 2100 boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, 2101 int[] targetCell, boolean external, DragView dragView, Runnable postAnimationRunnable) { 2102 View v = target.getChildAt(targetCell[0], targetCell[1]); 2103 boolean hasntMoved = false; 2104 if (mDragInfo != null) { 2105 CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); 2106 hasntMoved = (mDragInfo.cellX == targetCell[0] && 2107 mDragInfo.cellY == targetCell[1]) && (cellParent == target); 2108 } 2109 2110 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2111 mCreateUserFolderOnDrop = false; 2112 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 2113 2114 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2115 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2116 2117 if (aboveShortcut && willBecomeShortcut) { 2118 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2119 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2120 // if the drag started here, we need to remove it from the workspace 2121 if (!external) { 2122 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2123 } 2124 2125 Rect folderLocation = new Rect(); 2126 float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2127 target.removeView(v); 2128 2129 FolderIcon fi = 2130 mLauncher.addFolder(target, container, screen, targetCell[0], targetCell[1]); 2131 destInfo.cellX = -1; 2132 destInfo.cellY = -1; 2133 sourceInfo.cellX = -1; 2134 sourceInfo.cellY = -1; 2135 2136 // If the dragView is null, we can't animate 2137 boolean animate = dragView != null; 2138 if (animate) { 2139 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, 2140 postAnimationRunnable); 2141 } else { 2142 fi.addItem(destInfo); 2143 fi.addItem(sourceInfo); 2144 } 2145 return true; 2146 } 2147 return false; 2148 } 2149 2150 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2151 DragObject d, boolean external) { 2152 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2153 if (dropOverView instanceof FolderIcon) { 2154 FolderIcon fi = (FolderIcon) dropOverView; 2155 if (fi.acceptDrop(d.dragInfo)) { 2156 fi.onDrop(d); 2157 2158 // if the drag started here, we need to remove it from the workspace 2159 if (!external) { 2160 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 2161 } 2162 return true; 2163 } 2164 } 2165 return false; 2166 } 2167 2168 public void onDrop(final DragObject d) { 2169 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2170 mDragViewVisualCenter); 2171 2172 // We want the point to be mapped to the dragTarget. 2173 if (mDragTargetLayout != null) { 2174 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2175 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2176 } else { 2177 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2178 } 2179 } 2180 2181 CellLayout dropTargetLayout = mDragTargetLayout; 2182 2183 int snapScreen = -1; 2184 boolean resizeOnDrop = false; 2185 if (d.dragSource != this) { 2186 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2187 (int) mDragViewVisualCenter[1] }; 2188 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2189 } else if (mDragInfo != null) { 2190 final View cell = mDragInfo.cell; 2191 2192 Runnable resizeRunnable = null; 2193 if (dropTargetLayout != null) { 2194 // Move internally 2195 boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); 2196 boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); 2197 long container = hasMovedIntoHotseat ? 2198 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2199 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2200 int screen = (mTargetCell[0] < 0) ? 2201 mDragInfo.screen : indexOfChild(dropTargetLayout); 2202 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2203 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2204 // First we find the cell nearest to point at which the item is 2205 // dropped, without any consideration to whether there is an item there. 2206 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2207 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2208 // If the item being dropped is a shortcut and the nearest drop 2209 // cell also contains a shortcut, then create a folder with the two shortcuts. 2210 if (!mInScrollArea && createUserFolderIfNecessary(cell, container, 2211 dropTargetLayout, mTargetCell, false, d.dragView, null)) { 2212 return; 2213 } 2214 2215 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, d, false)) { 2216 return; 2217 } 2218 2219 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2220 // we need to find the nearest cell location that is vacant 2221 ItemInfo item = (ItemInfo) d.dragInfo; 2222 int minSpanX = item.spanX; 2223 int minSpanY = item.spanY; 2224 if (item.minSpanX > 0 && item.minSpanY > 0) { 2225 minSpanX = item.minSpanX; 2226 minSpanY = item.minSpanY; 2227 } 2228 int[] resultSpan = new int[2]; 2229 mTargetCell = findNearestVacantArea((int) mDragViewVisualCenter[0], 2230 (int) mDragViewVisualCenter[1], minSpanX, minSpanY, mDragInfo.spanX, 2231 mDragInfo.spanY, cell, dropTargetLayout, mTargetCell, resultSpan); 2232 boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; 2233 if (foundCell && (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY)) { 2234 resizeOnDrop = true; 2235 item.spanX = resultSpan[0]; 2236 item.spanY = resultSpan[1]; 2237 } 2238 2239 if (mCurrentPage != screen && !hasMovedIntoHotseat) { 2240 snapScreen = screen; 2241 snapToPage(screen); 2242 } 2243 2244 if (foundCell) { 2245 final ItemInfo info = (ItemInfo) cell.getTag(); 2246 if (hasMovedLayouts) { 2247 // Reparent the view 2248 getParentCellLayoutForView(cell).removeView(cell); 2249 addInScreen(cell, container, screen, mTargetCell[0], mTargetCell[1], 2250 info.spanX, info.spanY); 2251 } 2252 2253 // update the item's position after drop 2254 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2255 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1], 2256 item.spanX, item.spanY); 2257 lp.cellX = mTargetCell[0]; 2258 lp.cellY = mTargetCell[1]; 2259 lp.cellHSpan = item.spanX; 2260 lp.cellVSpan = item.spanY; 2261 cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screen, 2262 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2263 2264 if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && 2265 cell instanceof LauncherAppWidgetHostView) { 2266 final CellLayout cellLayout = dropTargetLayout; 2267 // We post this call so that the widget has a chance to be placed 2268 // in its final location 2269 2270 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2271 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2272 if (pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2273 final Runnable addResizeFrame = new Runnable() { 2274 public void run() { 2275 DragLayer dragLayer = mLauncher.getDragLayer(); 2276 dragLayer.addResizeFrame(info, hostView, cellLayout); 2277 } 2278 }; 2279 resizeRunnable = (new Runnable() { 2280 public void run() { 2281 if (!isPageMoving()) { 2282 addResizeFrame.run(); 2283 } else { 2284 mDelayedResizeRunnable = addResizeFrame; 2285 } 2286 } 2287 }); 2288 } 2289 } 2290 2291 LauncherModel.moveItemInDatabase(mLauncher, info, container, screen, lp.cellX, 2292 lp.cellY); 2293 } else { 2294 // If we can't find a drop location, we return the item to its original position 2295 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2296 mTargetCell[0] = lp.cellX; 2297 mTargetCell[1] = lp.cellY; 2298 } 2299 } 2300 2301 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2302 final Runnable finalResizeRunnable = resizeRunnable; 2303 // Prepare it to be animated into its new position 2304 // This must be called after the view has been re-parented 2305 final Runnable onCompleteRunnable = new Runnable() { 2306 @Override 2307 public void run() { 2308 mAnimatingViewIntoPlace = false; 2309 updateChildrenLayersEnabled(); 2310 if (finalResizeRunnable != null) { 2311 finalResizeRunnable.run(); 2312 } 2313 } 2314 }; 2315 mAnimatingViewIntoPlace = true; 2316 if (d.dragView.hasDrawn()) { 2317 final ItemInfo info = (ItemInfo) cell.getTag(); 2318 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET) { 2319 int animationType = resizeOnDrop ? ANIMATE_INTO_POSITION_AND_RESIZE : 2320 ANIMATE_INTO_POSITION_AND_DISAPPEAR; 2321 animateWidgetDrop(info, parent, d.dragView, 2322 onCompleteRunnable, animationType, cell, false); 2323 } else { 2324 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, 2325 onCompleteRunnable); 2326 } 2327 } else { 2328 d.deferDragViewCleanupPostAnimation = false; 2329 cell.setVisibility(VISIBLE); 2330 } 2331 parent.onDropChild(cell); 2332 } 2333 } 2334 2335 public void setFinalScrollForPageChange(int screen) { 2336 if (screen >= 0) { 2337 mSavedScrollX = getScrollX(); 2338 CellLayout cl = (CellLayout) getChildAt(screen); 2339 mSavedTranslationX = cl.getTranslationX(); 2340 mSavedRotationY = cl.getRotationY(); 2341 final int newX = getChildOffset(screen) - getRelativeChildOffset(screen); 2342 setScrollX(newX); 2343 cl.setTranslationX(0f); 2344 cl.setRotationY(0f); 2345 } 2346 } 2347 2348 public void resetFinalScrollForPageChange(int screen) { 2349 if (screen >= 0) { 2350 CellLayout cl = (CellLayout) getChildAt(screen); 2351 setScrollX(mSavedScrollX); 2352 cl.setTranslationX(mSavedTranslationX); 2353 cl.setRotationY(mSavedRotationY); 2354 } 2355 } 2356 2357 public void getViewLocationRelativeToSelf(View v, int[] location) { 2358 getLocationInWindow(location); 2359 int x = location[0]; 2360 int y = location[1]; 2361 2362 v.getLocationInWindow(location); 2363 int vX = location[0]; 2364 int vY = location[1]; 2365 2366 location[0] = vX - x; 2367 location[1] = vY - y; 2368 } 2369 2370 public void onDragEnter(DragObject d) { 2371 mDragHasEnteredWorkspace = true; 2372 if (mDragTargetLayout != null) { 2373 mDragTargetLayout.setIsDragOverlapping(false); 2374 mDragTargetLayout.onDragExit(); 2375 } 2376 mDragTargetLayout = getCurrentDropLayout(); 2377 mDragTargetLayout.setIsDragOverlapping(true); 2378 mDragTargetLayout.onDragEnter(); 2379 2380 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2381 // don't need to show the outlines 2382 if (LauncherApplication.isScreenLarge()) { 2383 showOutlines(); 2384 } 2385 } 2386 2387 private void doDragExit(DragObject d) { 2388 // Clean up folders 2389 cleanupFolderCreation(d); 2390 2391 // Reset the scroll area and previous drag target 2392 onResetScrollArea(); 2393 2394 if (mDragTargetLayout != null) { 2395 mDragTargetLayout.setIsDragOverlapping(false); 2396 mDragTargetLayout.onDragExit(); 2397 } 2398 mLastDragOverView = null; 2399 mSpringLoadedDragController.cancel(); 2400 2401 if (!mIsPageMoving) { 2402 hideOutlines(); 2403 } 2404 } 2405 2406 public void onDragExit(DragObject d) { 2407 mDragHasEnteredWorkspace = false; 2408 doDragExit(d); 2409 } 2410 2411 public DropTarget getDropTargetDelegate(DragObject d) { 2412 return null; 2413 } 2414 2415 /** 2416 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 2417 * in the returned structure related to the widgets that match the drop (or a null list if it is 2418 * a shortcut drop). If the drop is not accepted then a null structure is returned. 2419 */ 2420 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 2421 final LauncherModel model = mLauncher.getModel(); 2422 final ClipDescription desc = event.getClipDescription(); 2423 final int mimeTypeCount = desc.getMimeTypeCount(); 2424 for (int i = 0; i < mimeTypeCount; ++i) { 2425 final String mimeType = desc.getMimeType(i); 2426 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 2427 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 2428 } else { 2429 final List<WidgetMimeTypeHandlerData> widgets = 2430 model.resolveWidgetsForMimeType(mContext, mimeType); 2431 if (widgets.size() > 0) { 2432 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 2433 } 2434 } 2435 } 2436 return null; 2437 } 2438 2439 /** 2440 * Global drag and drop handler 2441 */ 2442 @Override 2443 public boolean onDragEvent(DragEvent event) { 2444 final ClipDescription desc = event.getClipDescription(); 2445 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 2446 final int[] pos = new int[2]; 2447 layout.getLocationOnScreen(pos); 2448 // We need to offset the drag coordinates to layout coordinate space 2449 final int x = (int) event.getX() - pos[0]; 2450 final int y = (int) event.getY() - pos[1]; 2451 2452 switch (event.getAction()) { 2453 case DragEvent.ACTION_DRAG_STARTED: { 2454 // Validate this drag 2455 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2456 if (test != null) { 2457 boolean isShortcut = (test.second == null); 2458 if (isShortcut) { 2459 // Check if we have enough space on this screen to add a new shortcut 2460 if (!layout.findCellForSpan(pos, 1, 1)) { 2461 mLauncher.showOutOfSpaceMessage(); 2462 return false; 2463 } 2464 } 2465 } else { 2466 // Show error message if we couldn't accept any of the items 2467 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 2468 Toast.LENGTH_SHORT).show(); 2469 return false; 2470 } 2471 2472 // Create the drag outline 2473 // We need to add extra padding to the bitmap to make room for the glow effect 2474 final Canvas canvas = new Canvas(); 2475 mDragOutline = createExternalDragOutline(canvas, DRAG_BITMAP_PADDING); 2476 2477 // Show the current page outlines to indicate that we can accept this drop 2478 showOutlines(); 2479 layout.onDragEnter(); 2480 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1, 1, 1, null, null); 2481 2482 return true; 2483 } 2484 case DragEvent.ACTION_DRAG_LOCATION: 2485 // Visualize the drop location 2486 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1, 1, 1, null, null); 2487 return true; 2488 case DragEvent.ACTION_DROP: { 2489 // Try and add any shortcuts 2490 final LauncherModel model = mLauncher.getModel(); 2491 final ClipData data = event.getClipData(); 2492 2493 // We assume that the mime types are ordered in descending importance of 2494 // representation. So we enumerate the list of mime types and alert the 2495 // user if any widgets can handle the drop. Only the most preferred 2496 // representation will be handled. 2497 pos[0] = x; 2498 pos[1] = y; 2499 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2500 if (test != null) { 2501 final int index = test.first; 2502 final List<WidgetMimeTypeHandlerData> widgets = test.second; 2503 final boolean isShortcut = (widgets == null); 2504 final String mimeType = desc.getMimeType(index); 2505 if (isShortcut) { 2506 final Intent intent = data.getItemAt(index).getIntent(); 2507 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 2508 if (info != null) { 2509 onDropExternal(new int[] { x, y }, info, layout, false); 2510 } 2511 } else { 2512 if (widgets.size() == 1) { 2513 // If there is only one item, then go ahead and add and configure 2514 // that widget 2515 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 2516 final PendingAddWidgetInfo createInfo = 2517 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 2518 mLauncher.addAppWidgetFromDrop(createInfo, 2519 LauncherSettings.Favorites.CONTAINER_DESKTOP, mCurrentPage, 2520 null, null, pos); 2521 } else { 2522 // Show the widget picker dialog if there is more than one widget 2523 // that can handle this data type 2524 final InstallWidgetReceiver.WidgetListAdapter adapter = 2525 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 2526 data, widgets, layout, mCurrentPage, pos); 2527 final AlertDialog.Builder builder = 2528 new AlertDialog.Builder(mContext); 2529 builder.setAdapter(adapter, adapter); 2530 builder.setCancelable(true); 2531 builder.setTitle(mContext.getString( 2532 R.string.external_drop_widget_pick_title)); 2533 builder.setIcon(R.drawable.ic_no_applications); 2534 builder.show(); 2535 } 2536 } 2537 } 2538 return true; 2539 } 2540 case DragEvent.ACTION_DRAG_ENDED: 2541 // Hide the page outlines after the drop 2542 layout.onDragExit(); 2543 hideOutlines(); 2544 return true; 2545 } 2546 return super.onDragEvent(event); 2547 } 2548 2549 /* 2550 * 2551 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2552 * coordinate space. The argument xy is modified with the return result. 2553 * 2554 */ 2555 void mapPointFromSelfToChild(View v, float[] xy) { 2556 mapPointFromSelfToChild(v, xy, null); 2557 } 2558 2559 /* 2560 * 2561 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2562 * coordinate space. The argument xy is modified with the return result. 2563 * 2564 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2565 * computing it itself; we use this to avoid redundant matrix inversions in 2566 * findMatchingPageForDragOver 2567 * 2568 */ 2569 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2570 if (cachedInverseMatrix == null) { 2571 v.getMatrix().invert(mTempInverseMatrix); 2572 cachedInverseMatrix = mTempInverseMatrix; 2573 } 2574 int scrollX = mScrollX; 2575 if (mNextPage != INVALID_PAGE) { 2576 scrollX = mScroller.getFinalX(); 2577 } 2578 xy[0] = xy[0] + scrollX - v.getLeft(); 2579 xy[1] = xy[1] + mScrollY - v.getTop(); 2580 cachedInverseMatrix.mapPoints(xy); 2581 } 2582 2583 /* 2584 * Maps a point from the Workspace's coordinate system to another sibling view's. (Workspace 2585 * covers the full screen) 2586 */ 2587 void mapPointFromSelfToSibling(View v, float[] xy) { 2588 xy[0] = xy[0] - v.getLeft(); 2589 xy[1] = xy[1] - v.getTop(); 2590 } 2591 2592 /* 2593 * 2594 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2595 * the parent View's coordinate space. The argument xy is modified with the return result. 2596 * 2597 */ 2598 void mapPointFromChildToSelf(View v, float[] xy) { 2599 v.getMatrix().mapPoints(xy); 2600 int scrollX = mScrollX; 2601 if (mNextPage != INVALID_PAGE) { 2602 scrollX = mScroller.getFinalX(); 2603 } 2604 xy[0] -= (scrollX - v.getLeft()); 2605 xy[1] -= (mScrollY - v.getTop()); 2606 } 2607 2608 static private float squaredDistance(float[] point1, float[] point2) { 2609 float distanceX = point1[0] - point2[0]; 2610 float distanceY = point2[1] - point2[1]; 2611 return distanceX * distanceX + distanceY * distanceY; 2612 } 2613 2614 /* 2615 * 2616 * Returns true if the passed CellLayout cl overlaps with dragView 2617 * 2618 */ 2619 boolean overlaps(CellLayout cl, DragView dragView, 2620 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2621 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2622 final float[] draggedItemTopLeft = mTempDragCoordinates; 2623 draggedItemTopLeft[0] = dragViewX; 2624 draggedItemTopLeft[1] = dragViewY; 2625 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2626 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2627 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2628 2629 // Transform the dragged item's top left coordinates 2630 // to the CellLayout's local coordinates 2631 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2632 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2633 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2634 2635 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2636 // Transform the dragged item's bottom right coordinates 2637 // to the CellLayout's local coordinates 2638 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2639 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2640 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2641 2642 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2643 float overlap = (overlapRegionRight - overlapRegionLeft) * 2644 (overlapRegionBottom - overlapRegionTop); 2645 if (overlap > 0) { 2646 return true; 2647 } 2648 } 2649 } 2650 return false; 2651 } 2652 2653 /* 2654 * 2655 * This method returns the CellLayout that is currently being dragged to. In order to drag 2656 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2657 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2658 * 2659 * Return null if no CellLayout is currently being dragged over 2660 * 2661 */ 2662 private CellLayout findMatchingPageForDragOver( 2663 DragView dragView, float originX, float originY, boolean exact) { 2664 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2665 // with the item being dragged and then choose the one that's closest to the touch point 2666 final int screenCount = getChildCount(); 2667 CellLayout bestMatchingScreen = null; 2668 float smallestDistSoFar = Float.MAX_VALUE; 2669 2670 for (int i = 0; i < screenCount; i++) { 2671 CellLayout cl = (CellLayout) getChildAt(i); 2672 2673 final float[] touchXy = {originX, originY}; 2674 // Transform the touch coordinates to the CellLayout's local coordinates 2675 // If the touch point is within the bounds of the cell layout, we can return immediately 2676 cl.getMatrix().invert(mTempInverseMatrix); 2677 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2678 2679 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2680 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2681 return cl; 2682 } 2683 2684 if (!exact) { 2685 // Get the center of the cell layout in screen coordinates 2686 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2687 cellLayoutCenter[0] = cl.getWidth()/2; 2688 cellLayoutCenter[1] = cl.getHeight()/2; 2689 mapPointFromChildToSelf(cl, cellLayoutCenter); 2690 2691 touchXy[0] = originX; 2692 touchXy[1] = originY; 2693 2694 // Calculate the distance between the center of the CellLayout 2695 // and the touch point 2696 float dist = squaredDistance(touchXy, cellLayoutCenter); 2697 2698 if (dist < smallestDistSoFar) { 2699 smallestDistSoFar = dist; 2700 bestMatchingScreen = cl; 2701 } 2702 } 2703 } 2704 return bestMatchingScreen; 2705 } 2706 2707 // This is used to compute the visual center of the dragView. This point is then 2708 // used to visualize drop locations and determine where to drop an item. The idea is that 2709 // the visual center represents the user's interpretation of where the item is, and hence 2710 // is the appropriate point to use when determining drop location. 2711 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2712 DragView dragView, float[] recycle) { 2713 float res[]; 2714 if (recycle == null) { 2715 res = new float[2]; 2716 } else { 2717 res = recycle; 2718 } 2719 2720 // First off, the drag view has been shifted in a way that is not represented in the 2721 // x and y values or the x/yOffsets. Here we account for that shift. 2722 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2723 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2724 2725 // These represent the visual top and left of drag view if a dragRect was provided. 2726 // If a dragRect was not provided, then they correspond to the actual view left and 2727 // top, as the dragRect is in that case taken to be the entire dragView. 2728 // R.dimen.dragViewOffsetY. 2729 int left = x - xOffset; 2730 int top = y - yOffset; 2731 2732 // In order to find the visual center, we shift by half the dragRect 2733 res[0] = left + dragView.getDragRegion().width() / 2; 2734 res[1] = top + dragView.getDragRegion().height() / 2; 2735 2736 return res; 2737 } 2738 2739 private boolean isDragWidget(DragObject d) { 2740 return (d.dragInfo instanceof LauncherAppWidgetInfo || 2741 d.dragInfo instanceof PendingAddWidgetInfo); 2742 } 2743 private boolean isExternalDragWidget(DragObject d) { 2744 return d.dragSource != this && isDragWidget(d); 2745 } 2746 2747 public void onDragOver(DragObject d) { 2748 // Skip drag over events while we are dragging over side pages 2749 if (mInScrollArea || mIsSwitchingState || mState == State.SMALL) return; 2750 2751 Rect r = new Rect(); 2752 CellLayout layout = null; 2753 ItemInfo item = (ItemInfo) d.dragInfo; 2754 2755 // Ensure that we have proper spans for the item that we are dropping 2756 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2757 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2758 d.dragView, mDragViewVisualCenter); 2759 2760 // Identify whether we have dragged over a side page 2761 if (isSmall()) { 2762 if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { 2763 mLauncher.getHotseat().getHitRect(r); 2764 if (r.contains(d.x, d.y)) { 2765 layout = mLauncher.getHotseat().getLayout(); 2766 } 2767 } 2768 if (layout == null) { 2769 layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false); 2770 } 2771 if (layout != mDragTargetLayout) { 2772 // Cancel all intermediate folder states 2773 cleanupFolderCreation(d); 2774 2775 if (mDragTargetLayout != null) { 2776 mDragTargetLayout.setIsDragOverlapping(false); 2777 mDragTargetLayout.onDragExit(); 2778 } 2779 mDragTargetLayout = layout; 2780 if (mDragTargetLayout != null) { 2781 mDragTargetLayout.setIsDragOverlapping(true); 2782 mDragTargetLayout.onDragEnter(); 2783 } else { 2784 mLastDragOverView = null; 2785 } 2786 2787 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 2788 if (isInSpringLoadedMode) { 2789 if (mLauncher.isHotseatLayout(layout)) { 2790 mSpringLoadedDragController.cancel(); 2791 } else { 2792 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2793 } 2794 } 2795 } 2796 } else { 2797 // Test to see if we are over the hotseat otherwise just use the current page 2798 if (mLauncher.getHotseat() != null && !isDragWidget(d)) { 2799 mLauncher.getHotseat().getHitRect(r); 2800 if (r.contains(d.x, d.y)) { 2801 layout = mLauncher.getHotseat().getLayout(); 2802 } 2803 } 2804 if (layout == null) { 2805 layout = getCurrentDropLayout(); 2806 } 2807 if (layout != mDragTargetLayout) { 2808 if (mDragTargetLayout != null) { 2809 mDragTargetLayout.setIsDragOverlapping(false); 2810 mDragTargetLayout.onDragExit(); 2811 } 2812 mDragTargetLayout = layout; 2813 mDragTargetLayout.setIsDragOverlapping(true); 2814 mDragTargetLayout.onDragEnter(); 2815 } 2816 } 2817 2818 // Handle the drag over 2819 if (mDragTargetLayout != null) { 2820 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2821 2822 // We want the point to be mapped to the dragTarget. 2823 if (mLauncher.isHotseatLayout(mDragTargetLayout)) { 2824 mapPointFromSelfToSibling(mLauncher.getHotseat(), mDragViewVisualCenter); 2825 } else { 2826 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2827 } 2828 ItemInfo info = (ItemInfo) d.dragInfo; 2829 2830 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2831 (int) mDragViewVisualCenter[1], 1, 1, mDragTargetLayout, mTargetCell); 2832 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2833 mTargetCell[1]); 2834 2835 boolean userFolderPending = willCreateUserFolder(info, mDragTargetLayout, 2836 mTargetCell, false); 2837 boolean isOverFolder = dragOverView instanceof FolderIcon; 2838 if (dragOverView != mLastDragOverView) { 2839 cancelFolderCreation(); 2840 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2841 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2842 } 2843 } 2844 2845 if (userFolderPending && dragOverView != mLastDragOverView) { 2846 mFolderCreationAlarm.setOnAlarmListener(new 2847 FolderCreationAlarmListener(mDragTargetLayout, mTargetCell[0], mTargetCell[1])); 2848 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2849 } 2850 2851 if (dragOverView != mLastDragOverView && isOverFolder) { 2852 ((FolderIcon) dragOverView).onDragEnter(d.dragInfo); 2853 if (mDragTargetLayout != null) { 2854 mDragTargetLayout.clearDragOutlines(); 2855 } 2856 } 2857 mLastDragOverView = dragOverView; 2858 2859 if (!mCreateUserFolderOnDrop && !isOverFolder) { 2860 int minSpanX = item.spanX; 2861 int minSpanY = item.spanY; 2862 if (item.minSpanX > 0 && item.minSpanY > 0) { 2863 minSpanX = item.minSpanX; 2864 minSpanY = item.minSpanY; 2865 } 2866 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2867 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2868 minSpanX, minSpanY, item.spanX, item.spanY, 2869 d.dragView.getDragVisualizeOffset(), d.dragView.getDragRegion()); 2870 } 2871 } 2872 } 2873 2874 private void cleanupFolderCreation(DragObject d) { 2875 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2876 mDragFolderRingAnimator.animateToNaturalState(); 2877 } 2878 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2879 if (d != null) { 2880 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2881 } 2882 } 2883 mFolderCreationAlarm.cancelAlarm(); 2884 } 2885 2886 private void cancelFolderCreation() { 2887 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2888 mDragFolderRingAnimator.animateToNaturalState(); 2889 } 2890 mCreateUserFolderOnDrop = false; 2891 mFolderCreationAlarm.cancelAlarm(); 2892 } 2893 2894 class FolderCreationAlarmListener implements OnAlarmListener { 2895 CellLayout layout; 2896 int cellX; 2897 int cellY; 2898 2899 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 2900 this.layout = layout; 2901 this.cellX = cellX; 2902 this.cellY = cellY; 2903 } 2904 2905 public void onAlarm(Alarm alarm) { 2906 if (mDragFolderRingAnimator == null) { 2907 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 2908 } 2909 mDragFolderRingAnimator.setCell(cellX, cellY); 2910 mDragFolderRingAnimator.setCellLayout(layout); 2911 mDragFolderRingAnimator.animateToAcceptState(); 2912 layout.showFolderAccept(mDragFolderRingAnimator); 2913 layout.clearDragOutlines(); 2914 mCreateUserFolderOnDrop = true; 2915 } 2916 } 2917 2918 @Override 2919 public void getHitRect(Rect outRect) { 2920 // We want the workspace to have the whole area of the display (it will find the correct 2921 // cell layout to drop to in the existing drag/drop logic. 2922 outRect.set(0, 0, mDisplayWidth, mDisplayHeight); 2923 } 2924 2925 /** 2926 * Add the item specified by dragInfo to the given layout. 2927 * @return true if successful 2928 */ 2929 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2930 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2931 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2932 return true; 2933 } 2934 mLauncher.showOutOfSpaceMessage(); 2935 return false; 2936 } 2937 2938 private void onDropExternal(int[] touchXY, Object dragInfo, 2939 CellLayout cellLayout, boolean insertAtFirst) { 2940 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 2941 } 2942 2943 /** 2944 * Drop an item that didn't originate on one of the workspace screens. 2945 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2946 * come from another app altogether. 2947 * 2948 * NOTE: This can also be called when we are outside of a drag event, when we want 2949 * to add an item to one of the workspace screens. 2950 */ 2951 private void onDropExternal(final int[] touchXY, final Object dragInfo, 2952 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 2953 final Runnable exitSpringLoadedRunnable = new Runnable() { 2954 @Override 2955 public void run() { 2956 mLauncher.exitSpringLoadedDragModeDelayed(true, false, null); 2957 } 2958 }; 2959 2960 ItemInfo info = (ItemInfo) dragInfo; 2961 int spanX = info.spanX; 2962 int spanY = info.spanY; 2963 if (mDragInfo != null) { 2964 spanX = mDragInfo.spanX; 2965 spanY = mDragInfo.spanY; 2966 } 2967 2968 final long container = mLauncher.isHotseatLayout(cellLayout) ? 2969 LauncherSettings.Favorites.CONTAINER_HOTSEAT : 2970 LauncherSettings.Favorites.CONTAINER_DESKTOP; 2971 final int screen = indexOfChild(cellLayout); 2972 if (!mLauncher.isHotseatLayout(cellLayout) && screen != mCurrentPage 2973 && mState != State.SPRING_LOADED) { 2974 snapToPage(screen); 2975 } 2976 2977 if (info instanceof PendingAddItemInfo) { 2978 final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; 2979 2980 boolean findNearestVacantCell = true; 2981 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { 2982 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 2983 cellLayout, mTargetCell); 2984 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, 2985 true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, 2986 mDragTargetLayout, mTargetCell)) { 2987 findNearestVacantCell = false; 2988 } 2989 } 2990 final ItemInfo item = (ItemInfo) d.dragInfo; 2991 int minSpanX = item.spanX; 2992 int minSpanY = item.spanY; 2993 if (item.minSpanX > 0 && item.minSpanY > 0) { 2994 minSpanX = item.minSpanX; 2995 minSpanY = item.minSpanY; 2996 } 2997 if (findNearestVacantCell) { 2998 int[] resultSpan = new int[2]; 2999 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], minSpanX, minSpanY, 3000 spanX, spanY, null, cellLayout, mTargetCell, resultSpan); 3001 item.spanX = resultSpan[0]; 3002 item.spanY = resultSpan[1]; 3003 } 3004 3005 Runnable onAnimationCompleteRunnable = new Runnable() { 3006 @Override 3007 public void run() { 3008 // When dragging and dropping from customization tray, we deal with creating 3009 // widgets/shortcuts/folders in a slightly different way 3010 switch (pendingInfo.itemType) { 3011 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 3012 int span[] = new int[2]; 3013 span[0] = item.spanX; 3014 span[1] = item.spanY; 3015 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, 3016 container, screen, mTargetCell, span, null); 3017 break; 3018 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3019 mLauncher.processShortcutFromDrop(pendingInfo.componentName, 3020 container, screen, mTargetCell, null); 3021 break; 3022 default: 3023 throw new IllegalStateException("Unknown item type: " + 3024 pendingInfo.itemType); 3025 } 3026 cellLayout.onDragExit(); 3027 } 3028 }; 3029 View finalView = pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET 3030 ? ((PendingAddWidgetInfo) pendingInfo).boundWidget : null; 3031 int animationStyle = ANIMATE_INTO_POSITION_AND_DISAPPEAR; 3032 if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && 3033 ((PendingAddWidgetInfo) pendingInfo).info.configure != null) { 3034 animationStyle = ANIMATE_INTO_POSITION_AND_REMAIN; 3035 } 3036 animateWidgetDrop(info, cellLayout, d.dragView, onAnimationCompleteRunnable, 3037 animationStyle, finalView, true); 3038 } else { 3039 // This is for other drag/drop cases, like dragging from All Apps 3040 View view = null; 3041 3042 switch (info.itemType) { 3043 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 3044 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3045 if (info.container == NO_ID && info instanceof ApplicationInfo) { 3046 // Came from all apps -- make a copy 3047 info = new ShortcutInfo((ApplicationInfo) info); 3048 } 3049 view = mLauncher.createShortcut(R.layout.application, cellLayout, 3050 (ShortcutInfo) info); 3051 break; 3052 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 3053 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 3054 (FolderInfo) info, mIconCache); 3055 break; 3056 default: 3057 throw new IllegalStateException("Unknown item type: " + info.itemType); 3058 } 3059 3060 // First we find the cell nearest to point at which the item is 3061 // dropped, without any consideration to whether there is an item there. 3062 if (touchXY != null) { 3063 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 3064 cellLayout, mTargetCell); 3065 d.postAnimationRunnable = exitSpringLoadedRunnable; 3066 if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, true, 3067 d.dragView, d.postAnimationRunnable)) { 3068 return; 3069 } 3070 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, d, true)) { 3071 return; 3072 } 3073 } 3074 3075 if (touchXY != null) { 3076 // when dragging and dropping, just find the closest free spot 3077 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], 1, 1, null, 3078 cellLayout, mTargetCell); 3079 } else { 3080 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3081 } 3082 addInScreen(view, container, screen, mTargetCell[0], mTargetCell[1], info.spanX, 3083 info.spanY, insertAtFirst); 3084 cellLayout.onDropChild(view); 3085 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 3086 cellLayout.getChildrenLayout().measureChild(view); 3087 3088 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screen, 3089 lp.cellX, lp.cellY); 3090 3091 if (d.dragView != null) { 3092 // We wrap the animation call in the temporary set and reset of the current 3093 // cellLayout to its final transform -- this means we animate the drag view to 3094 // the correct final location. 3095 setFinalTransitionTransform(cellLayout); 3096 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 3097 exitSpringLoadedRunnable); 3098 resetTransitionTransform(cellLayout); 3099 } 3100 } 3101 } 3102 3103 public Bitmap createWidgetBitmap(ItemInfo widgetInfo, View layout) { 3104 int[] unScaledSize = mLauncher.getWorkspace().estimateItemSize(widgetInfo.spanX, 3105 widgetInfo.spanY, widgetInfo, false); 3106 int visibility = layout.getVisibility(); 3107 layout.setVisibility(VISIBLE); 3108 3109 int width = MeasureSpec.makeMeasureSpec(unScaledSize[0], MeasureSpec.EXACTLY); 3110 int height = MeasureSpec.makeMeasureSpec(unScaledSize[1], MeasureSpec.EXACTLY); 3111 Bitmap b = Bitmap.createBitmap(unScaledSize[0], unScaledSize[1], 3112 Bitmap.Config.ARGB_8888); 3113 Canvas c = new Canvas(b); 3114 3115 layout.measure(width, height); 3116 layout.layout(0, 0, unScaledSize[0], unScaledSize[1]); 3117 layout.draw(c); 3118 c.setBitmap(null); 3119 layout.setVisibility(visibility); 3120 return b; 3121 } 3122 3123 private void getFinalPositionForDropAnimation(int[] loc, float[] scaleXY, 3124 DragView dragView, CellLayout layout, ItemInfo info, int[] targetCell, View finalView, 3125 boolean external) { 3126 // Now we animate the dragView, (ie. the widget or shortcut preview) into its final 3127 // location and size on the home screen. 3128 int spanX = info.spanX; 3129 int spanY = info.spanY; 3130 3131 Rect r = estimateItemPosition(layout, info, targetCell[0], targetCell[1], spanX, spanY); 3132 loc[0] = r.left; 3133 loc[1] = r.top; 3134 3135 setFinalTransitionTransform(layout); 3136 float cellLayoutScale = 3137 mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(layout, loc); 3138 resetTransitionTransform(layout); 3139 float dragViewScaleX = (1.0f * r.width()) / dragView.getMeasuredWidth(); 3140 float dragViewScaleY = (1.0f * r.height()) / dragView.getMeasuredHeight(); 3141 3142 // The animation will scale the dragView about its center, so we need to center about 3143 // the final location. 3144 loc[0] -= (dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; 3145 loc[1] -= (dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; 3146 3147 scaleXY[0] = dragViewScaleX * cellLayoutScale; 3148 scaleXY[1] = dragViewScaleY * cellLayoutScale; 3149 } 3150 3151 public void animateWidgetDrop(ItemInfo info, CellLayout cellLayout, DragView dragView, 3152 final Runnable onCompleteRunnable, int animationType, final View finalView, 3153 boolean external) { 3154 Rect from = new Rect(); 3155 mLauncher.getDragLayer().getViewRectRelativeToSelf(dragView, from); 3156 3157 int[] finalPos = new int[2]; 3158 float scaleXY[] = new float[2]; 3159 getFinalPositionForDropAnimation(finalPos, scaleXY, dragView, cellLayout, info, mTargetCell, 3160 finalView, external); 3161 3162 Resources res = mLauncher.getResources(); 3163 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration) - 200; 3164 3165 // In the case where we've prebound the widget, we remove it from the DragLayer 3166 if (finalView instanceof AppWidgetHostView && external) { 3167 mLauncher.getDragLayer().removeView(finalView); 3168 } 3169 if ((animationType == ANIMATE_INTO_POSITION_AND_RESIZE || external) && finalView != null) { 3170 Bitmap crossFadeBitmap = createWidgetBitmap(info, finalView); 3171 dragView.setCrossFadeBitmap(crossFadeBitmap); 3172 dragView.crossFade((int) (duration * 0.8f)); 3173 } else if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && external) { 3174 scaleXY[0] = scaleXY[1] = Math.min(scaleXY[0], scaleXY[1]); 3175 } 3176 3177 DragLayer dragLayer = mLauncher.getDragLayer(); 3178 if (animationType == CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION) { 3179 mLauncher.getDragLayer().animateViewIntoPosition(dragView, finalPos, 0f, 0.1f, 0.1f, 3180 DragLayer.ANIMATION_END_DISAPPEAR, onCompleteRunnable, duration); 3181 } else { 3182 int endStyle; 3183 if (animationType == ANIMATE_INTO_POSITION_AND_REMAIN) { 3184 endStyle = DragLayer.ANIMATION_END_REMAIN_VISIBLE; 3185 } else { 3186 endStyle = DragLayer.ANIMATION_END_DISAPPEAR;; 3187 } 3188 3189 Runnable onComplete = new Runnable() { 3190 @Override 3191 public void run() { 3192 if (finalView != null) { 3193 finalView.setVisibility(VISIBLE); 3194 } 3195 if (onCompleteRunnable != null) { 3196 onCompleteRunnable.run(); 3197 } 3198 } 3199 }; 3200 dragLayer.animateViewIntoPosition(dragView, from.left, from.top, finalPos[0], 3201 finalPos[1], 1, 1, 1, scaleXY[0], scaleXY[1], onComplete, endStyle, 3202 duration, this); 3203 } 3204 } 3205 3206 public void setFinalTransitionTransform(CellLayout layout) { 3207 if (isSwitchingState()) { 3208 int index = indexOfChild(layout); 3209 mCurrentScaleX = layout.getScaleX(); 3210 mCurrentScaleY = layout.getScaleY(); 3211 mCurrentTranslationX = layout.getTranslationX(); 3212 mCurrentTranslationY = layout.getTranslationY(); 3213 mCurrentRotationY = layout.getRotationY(); 3214 layout.setScaleX(mNewScaleXs[index]); 3215 layout.setScaleY(mNewScaleYs[index]); 3216 layout.setTranslationX(mNewTranslationXs[index]); 3217 layout.setTranslationY(mNewTranslationYs[index]); 3218 layout.setRotationY(mNewRotationYs[index]); 3219 } 3220 } 3221 public void resetTransitionTransform(CellLayout layout) { 3222 if (isSwitchingState()) { 3223 mCurrentScaleX = layout.getScaleX(); 3224 mCurrentScaleY = layout.getScaleY(); 3225 mCurrentTranslationX = layout.getTranslationX(); 3226 mCurrentTranslationY = layout.getTranslationY(); 3227 mCurrentRotationY = layout.getRotationY(); 3228 layout.setScaleX(mCurrentScaleX); 3229 layout.setScaleY(mCurrentScaleY); 3230 layout.setTranslationX(mCurrentTranslationX); 3231 layout.setTranslationY(mCurrentTranslationY); 3232 layout.setRotationY(mCurrentRotationY); 3233 } 3234 } 3235 3236 /** 3237 * Return the current {@link CellLayout}, correctly picking the destination 3238 * screen while a scroll is in progress. 3239 */ 3240 public CellLayout getCurrentDropLayout() { 3241 return (CellLayout) getChildAt(mNextPage == INVALID_PAGE ? mCurrentPage : mNextPage); 3242 } 3243 3244 /** 3245 * Return the current CellInfo describing our current drag; this method exists 3246 * so that Launcher can sync this object with the correct info when the activity is created/ 3247 * destroyed 3248 * 3249 */ 3250 public CellLayout.CellInfo getDragInfo() { 3251 return mDragInfo; 3252 } 3253 3254 /** 3255 * Calculate the nearest cell where the given object would be dropped. 3256 * 3257 * pixelX and pixelY should be in the coordinate system of layout 3258 */ 3259 private int[] findNearestVacantArea(int pixelX, int pixelY, 3260 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 3261 return layout.findNearestVacantArea( 3262 pixelX, pixelY, spanX, spanY, spanX, spanY, ignoreView, recycle, null); 3263 } 3264 3265 /** 3266 * Calculate the nearest cell where the given object would be dropped. 3267 * 3268 * pixelX and pixelY should be in the coordinate system of layout 3269 */ 3270 private int[] findNearestVacantArea(int pixelX, int pixelY, int minSpanX, int minSpanY, 3271 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle, 3272 int[] returnSpan) { 3273 return layout.findNearestVacantArea( 3274 pixelX, pixelY, minSpanX, minSpanY, spanX, spanY, ignoreView, recycle, returnSpan); 3275 } 3276 3277 /** 3278 * Calculate the nearest cell where the given object would be dropped. 3279 * 3280 * pixelX and pixelY should be in the coordinate system of layout 3281 */ 3282 private int[] findNearestArea(int pixelX, int pixelY, 3283 int spanX, int spanY, CellLayout layout, int[] recycle) { 3284 return layout.findNearestArea( 3285 pixelX, pixelY, spanX, spanY, recycle); 3286 } 3287 3288 void setup(DragController dragController) { 3289 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3290 mDragController = dragController; 3291 3292 // hardware layers on children are enabled on startup, but should be disabled until 3293 // needed 3294 updateChildrenLayersEnabled(); 3295 setWallpaperDimension(); 3296 } 3297 3298 /** 3299 * Called at the end of a drag which originated on the workspace. 3300 */ 3301 public void onDropCompleted(View target, DragObject d, boolean success) { 3302 if (success) { 3303 if (target != this) { 3304 if (mDragInfo != null) { 3305 getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); 3306 if (mDragInfo.cell instanceof DropTarget) { 3307 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 3308 } 3309 } 3310 } 3311 } else if (mDragInfo != null) { 3312 // NOTE: When 'success' is true, onDragExit is called by the DragController before 3313 // calling onDropCompleted(). We call it ourselves here, but maybe this should be 3314 // moved into DragController.cancelDrag(). 3315 doDragExit(null); 3316 CellLayout cellLayout; 3317 if (mLauncher.isHotseatLayout(target)) { 3318 cellLayout = mLauncher.getHotseat().getLayout(); 3319 } else { 3320 cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3321 } 3322 cellLayout.onDropChild(mDragInfo.cell); 3323 } 3324 if (d.cancelled && mDragInfo.cell != null) { 3325 mDragInfo.cell.setVisibility(VISIBLE); 3326 } 3327 mDragOutline = null; 3328 mDragInfo = null; 3329 3330 // Hide the scrolling indicator after you pick up an item 3331 hideScrollingIndicator(false); 3332 } 3333 3334 public boolean isDropEnabled() { 3335 return true; 3336 } 3337 3338 @Override 3339 protected void onRestoreInstanceState(Parcelable state) { 3340 super.onRestoreInstanceState(state); 3341 Launcher.setScreen(mCurrentPage); 3342 } 3343 3344 @Override 3345 public void scrollLeft() { 3346 if (!isSmall() && !mIsSwitchingState) { 3347 super.scrollLeft(); 3348 } 3349 Folder openFolder = getOpenFolder(); 3350 if (openFolder != null) { 3351 openFolder.completeDragExit(); 3352 } 3353 } 3354 3355 @Override 3356 public void scrollRight() { 3357 if (!isSmall() && !mIsSwitchingState) { 3358 super.scrollRight(); 3359 } 3360 Folder openFolder = getOpenFolder(); 3361 if (openFolder != null) { 3362 openFolder.completeDragExit(); 3363 } 3364 } 3365 3366 @Override 3367 public boolean onEnterScrollArea(int x, int y, int direction) { 3368 // Ignore the scroll area if we are dragging over the hot seat 3369 if (mLauncher.getHotseat() != null) { 3370 Rect r = new Rect(); 3371 mLauncher.getHotseat().getHitRect(r); 3372 if (r.contains(x, y)) { 3373 return false; 3374 } 3375 } 3376 3377 boolean result = false; 3378 if (!isSmall() && !mIsSwitchingState) { 3379 mInScrollArea = true; 3380 3381 final int page = (mNextPage != INVALID_PAGE ? mNextPage : mCurrentPage) + 3382 (direction == DragController.SCROLL_LEFT ? -1 : 1); 3383 cancelFolderCreation(); 3384 3385 if (0 <= page && page < getChildCount()) { 3386 CellLayout layout = (CellLayout) getChildAt(page); 3387 // Exit the current layout and mark the overlapping layout 3388 if (mDragTargetLayout != null) { 3389 mDragTargetLayout.setIsDragOverlapping(false); 3390 mDragTargetLayout.onDragExit(); 3391 } 3392 mDragTargetLayout = layout; 3393 mDragTargetLayout.setIsDragOverlapping(true); 3394 3395 // Workspace is responsible for drawing the edge glow on adjacent pages, 3396 // so we need to redraw the workspace when this may have changed. 3397 invalidate(); 3398 result = true; 3399 } 3400 } 3401 return result; 3402 } 3403 3404 @Override 3405 public boolean onExitScrollArea() { 3406 boolean result = false; 3407 if (mInScrollArea) { 3408 if (mDragTargetLayout != null) { 3409 mDragTargetLayout.setIsDragOverlapping(false); 3410 // Workspace is responsible for drawing the edge glow on adjacent pages, 3411 // so we need to redraw the workspace when this may have changed. 3412 invalidate(); 3413 } 3414 if (mDragTargetLayout != null && mDragHasEnteredWorkspace) { 3415 // Unmark the overlapping layout and re-enter the current layout 3416 mDragTargetLayout = getCurrentDropLayout(); 3417 mDragTargetLayout.onDragEnter(); 3418 } 3419 result = true; 3420 mInScrollArea = false; 3421 } 3422 return result; 3423 } 3424 3425 private void onResetScrollArea() { 3426 if (mDragTargetLayout != null) { 3427 // Unmark the overlapping layout 3428 mDragTargetLayout.setIsDragOverlapping(false); 3429 3430 // Workspace is responsible for drawing the edge glow on adjacent pages, 3431 // so we need to redraw the workspace when this may have changed. 3432 invalidate(); 3433 } 3434 mInScrollArea = false; 3435 } 3436 3437 /** 3438 * Returns a specific CellLayout 3439 */ 3440 CellLayout getParentCellLayoutForView(View v) { 3441 ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); 3442 for (CellLayout layout : layouts) { 3443 if (layout.getChildrenLayout().indexOfChild(v) > -1) { 3444 return layout; 3445 } 3446 } 3447 return null; 3448 } 3449 3450 /** 3451 * Returns a list of all the CellLayouts in the workspace. 3452 */ 3453 ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { 3454 ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); 3455 int screenCount = getChildCount(); 3456 for (int screen = 0; screen < screenCount; screen++) { 3457 layouts.add(((CellLayout) getChildAt(screen))); 3458 } 3459 if (mLauncher.getHotseat() != null) { 3460 layouts.add(mLauncher.getHotseat().getLayout()); 3461 } 3462 return layouts; 3463 } 3464 3465 /** 3466 * We should only use this to search for specific children. Do not use this method to modify 3467 * CellLayoutChildren directly. 3468 */ 3469 ArrayList<CellLayoutChildren> getWorkspaceAndHotseatCellLayoutChildren() { 3470 ArrayList<CellLayoutChildren> childrenLayouts = new ArrayList<CellLayoutChildren>(); 3471 int screenCount = getChildCount(); 3472 for (int screen = 0; screen < screenCount; screen++) { 3473 childrenLayouts.add(((CellLayout) getChildAt(screen)).getChildrenLayout()); 3474 } 3475 if (mLauncher.getHotseat() != null) { 3476 childrenLayouts.add(mLauncher.getHotseat().getLayout().getChildrenLayout()); 3477 } 3478 return childrenLayouts; 3479 } 3480 3481 public Folder getFolderForTag(Object tag) { 3482 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3483 for (CellLayoutChildren layout: childrenLayouts) { 3484 int count = layout.getChildCount(); 3485 for (int i = 0; i < count; i++) { 3486 View child = layout.getChildAt(i); 3487 if (child instanceof Folder) { 3488 Folder f = (Folder) child; 3489 if (f.getInfo() == tag && f.getInfo().opened) { 3490 return f; 3491 } 3492 } 3493 } 3494 } 3495 return null; 3496 } 3497 3498 public View getViewForTag(Object tag) { 3499 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3500 for (CellLayoutChildren layout: childrenLayouts) { 3501 int count = layout.getChildCount(); 3502 for (int i = 0; i < count; i++) { 3503 View child = layout.getChildAt(i); 3504 if (child.getTag() == tag) { 3505 return child; 3506 } 3507 } 3508 } 3509 return null; 3510 } 3511 3512 void clearDropTargets() { 3513 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3514 for (CellLayoutChildren layout: childrenLayouts) { 3515 int childCount = layout.getChildCount(); 3516 for (int j = 0; j < childCount; j++) { 3517 View v = layout.getChildAt(j); 3518 if (v instanceof DropTarget) { 3519 mDragController.removeDropTarget((DropTarget) v); 3520 } 3521 } 3522 } 3523 } 3524 3525 void removeItems(final ArrayList<ApplicationInfo> apps) { 3526 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3527 3528 final HashSet<String> packageNames = new HashSet<String>(); 3529 final int appCount = apps.size(); 3530 for (int i = 0; i < appCount; i++) { 3531 packageNames.add(apps.get(i).componentName.getPackageName()); 3532 } 3533 3534 ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); 3535 for (final CellLayout layoutParent: cellLayouts) { 3536 final ViewGroup layout = layoutParent.getChildrenLayout(); 3537 3538 // Avoid ANRs by treating each screen separately 3539 post(new Runnable() { 3540 public void run() { 3541 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3542 childrenToRemove.clear(); 3543 3544 int childCount = layout.getChildCount(); 3545 for (int j = 0; j < childCount; j++) { 3546 final View view = layout.getChildAt(j); 3547 Object tag = view.getTag(); 3548 3549 if (tag instanceof ShortcutInfo) { 3550 final ShortcutInfo info = (ShortcutInfo) tag; 3551 final Intent intent = info.intent; 3552 final ComponentName name = intent.getComponent(); 3553 3554 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3555 for (String packageName: packageNames) { 3556 if (packageName.equals(name.getPackageName())) { 3557 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3558 childrenToRemove.add(view); 3559 } 3560 } 3561 } 3562 } else if (tag instanceof FolderInfo) { 3563 final FolderInfo info = (FolderInfo) tag; 3564 final ArrayList<ShortcutInfo> contents = info.contents; 3565 final int contentsCount = contents.size(); 3566 final ArrayList<ShortcutInfo> appsToRemoveFromFolder = 3567 new ArrayList<ShortcutInfo>(); 3568 3569 for (int k = 0; k < contentsCount; k++) { 3570 final ShortcutInfo appInfo = contents.get(k); 3571 final Intent intent = appInfo.intent; 3572 final ComponentName name = intent.getComponent(); 3573 3574 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3575 for (String packageName: packageNames) { 3576 if (packageName.equals(name.getPackageName())) { 3577 appsToRemoveFromFolder.add(appInfo); 3578 } 3579 } 3580 } 3581 } 3582 for (ShortcutInfo item: appsToRemoveFromFolder) { 3583 info.remove(item); 3584 LauncherModel.deleteItemFromDatabase(mLauncher, item); 3585 } 3586 } else if (tag instanceof LauncherAppWidgetInfo) { 3587 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3588 final AppWidgetProviderInfo provider = 3589 widgets.getAppWidgetInfo(info.appWidgetId); 3590 if (provider != null) { 3591 for (String packageName: packageNames) { 3592 if (packageName.equals(provider.provider.getPackageName())) { 3593 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3594 childrenToRemove.add(view); 3595 } 3596 } 3597 } 3598 } 3599 } 3600 3601 childCount = childrenToRemove.size(); 3602 for (int j = 0; j < childCount; j++) { 3603 View child = childrenToRemove.get(j); 3604 // Note: We can not remove the view directly from CellLayoutChildren as this 3605 // does not re-mark the spaces as unoccupied. 3606 layoutParent.removeViewInLayout(child); 3607 if (child instanceof DropTarget) { 3608 mDragController.removeDropTarget((DropTarget)child); 3609 } 3610 } 3611 3612 if (childCount > 0) { 3613 layout.requestLayout(); 3614 layout.invalidate(); 3615 } 3616 } 3617 }); 3618 } 3619 } 3620 3621 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3622 ArrayList<CellLayoutChildren> childrenLayouts = getWorkspaceAndHotseatCellLayoutChildren(); 3623 for (CellLayoutChildren layout: childrenLayouts) { 3624 int childCount = layout.getChildCount(); 3625 for (int j = 0; j < childCount; j++) { 3626 final View view = layout.getChildAt(j); 3627 Object tag = view.getTag(); 3628 if (tag instanceof ShortcutInfo) { 3629 ShortcutInfo info = (ShortcutInfo)tag; 3630 // We need to check for ACTION_MAIN otherwise getComponent() might 3631 // return null for some shortcuts (for instance, for shortcuts to 3632 // web pages.) 3633 final Intent intent = info.intent; 3634 final ComponentName name = intent.getComponent(); 3635 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3636 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3637 final int appCount = apps.size(); 3638 for (int k = 0; k < appCount; k++) { 3639 ApplicationInfo app = apps.get(k); 3640 if (app.componentName.equals(name)) { 3641 info.setIcon(mIconCache.getIcon(info.intent)); 3642 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 3643 new FastBitmapDrawable(info.getIcon(mIconCache)), 3644 null, null); 3645 } 3646 } 3647 } 3648 } 3649 } 3650 } 3651 } 3652 3653 void moveToDefaultScreen(boolean animate) { 3654 if (!isSmall()) { 3655 if (animate) { 3656 snapToPage(mDefaultPage); 3657 } else { 3658 setCurrentPage(mDefaultPage); 3659 } 3660 } 3661 getChildAt(mDefaultPage).requestFocus(); 3662 } 3663 3664 @Override 3665 public void syncPages() { 3666 } 3667 3668 @Override 3669 public void syncPageItems(int page, boolean immediate) { 3670 } 3671 3672 @Override 3673 protected String getCurrentPageDescription() { 3674 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 3675 return String.format(mContext.getString(R.string.workspace_scroll_format), 3676 page + 1, getChildCount()); 3677 } 3678 3679 public void getLocationInDragLayer(int[] loc) { 3680 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 3681 } 3682 3683 void setFadeForOverScroll(float fade) { 3684 if (!isScrollingIndicatorEnabled()) return; 3685 3686 mOverscrollFade = fade; 3687 float reducedFade = 0.5f + 0.5f * (1 - fade); 3688 final ViewGroup parent = (ViewGroup) getParent(); 3689 final ImageView qsbDivider = (ImageView) (parent.findViewById(R.id.qsb_divider)); 3690 final ImageView dockDivider = (ImageView) (parent.findViewById(R.id.dock_divider)); 3691 final View scrollIndicator = getScrollingIndicator(); 3692 3693 cancelScrollingIndicatorAnimations(); 3694 if (qsbDivider != null) qsbDivider.setAlpha(reducedFade); 3695 if (dockDivider != null) dockDivider.setAlpha(reducedFade); 3696 scrollIndicator.setAlpha(1 - fade); 3697 } 3698} 3699