Workspace.java revision 073a46ff635d089cbcb15d939d1de42dd2b86c97
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 java.util.ArrayList; 20import java.util.HashSet; 21import java.util.List; 22 23import android.animation.Animator; 24import android.animation.AnimatorListenerAdapter; 25import android.animation.AnimatorSet; 26import android.animation.ObjectAnimator; 27import android.animation.TimeInterpolator; 28import android.animation.ValueAnimator; 29import android.animation.Animator.AnimatorListener; 30import android.animation.ValueAnimator.AnimatorUpdateListener; 31import android.app.AlertDialog; 32import android.app.WallpaperManager; 33import android.appwidget.AppWidgetManager; 34import android.appwidget.AppWidgetProviderInfo; 35import android.content.ClipData; 36import android.content.ClipDescription; 37import android.content.ComponentName; 38import android.content.Context; 39import android.content.Intent; 40import android.content.pm.PackageManager; 41import android.content.res.Resources; 42import android.content.res.TypedArray; 43import android.graphics.Bitmap; 44import android.graphics.Camera; 45import android.graphics.Canvas; 46import android.graphics.Matrix; 47import android.graphics.Paint; 48import android.graphics.Rect; 49import android.graphics.RectF; 50import android.graphics.Region.Op; 51import android.graphics.drawable.Drawable; 52import android.os.IBinder; 53import android.os.Parcelable; 54import android.util.AttributeSet; 55import android.util.DisplayMetrics; 56import android.util.Log; 57import android.util.Pair; 58import android.view.Display; 59import android.view.DragEvent; 60import android.view.MotionEvent; 61import android.view.View; 62import android.view.ViewGroup; 63import android.view.animation.DecelerateInterpolator; 64import android.widget.TabHost; 65import android.widget.TabWidget; 66import android.widget.TextView; 67import android.widget.Toast; 68 69import com.android.launcher.R; 70import com.android.launcher2.InstallWidgetReceiver.WidgetMimeTypeHandlerData; 71 72/** 73 * The workspace is a wide area with a wallpaper and a finite number of pages. 74 * Each page contains a number of icons, folders or widgets the user can 75 * interact with. A workspace is meant to be used with a fixed width only. 76 */ 77public class Workspace extends SmoothPagedView 78 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 79 View.OnClickListener { 80 @SuppressWarnings({"UnusedDeclaration"}) 81 private static final String TAG = "Launcher.Workspace"; 82 83 // This is how much the workspace shrinks when we enter all apps or 84 // customization mode 85 private static final float SHRINK_FACTOR = 0.16f; 86 87 // How much the screens shrink when we enter spring loaded drag mode 88 private static final float SPRING_LOADED_DRAG_SHRINK_FACTOR = 0.7f; 89 90 // Y rotation to apply to the workspace screens 91 private static final float WORKSPACE_ROTATION = 12.5f; 92 93 // These are extra scale factors to apply to the mini home screens 94 // so as to achieve the desired transform 95 private static final float EXTRA_SCALE_FACTOR_0 = 0.972f; 96 private static final float EXTRA_SCALE_FACTOR_1 = 1.0f; 97 private static final float EXTRA_SCALE_FACTOR_2 = 1.10f; 98 99 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 100 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 101 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 102 103 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 104 private static final int BACKGROUND_FADE_IN_DURATION = 350; 105 106 // These animators are used to fade the children's outlines 107 private ObjectAnimator mChildrenOutlineFadeInAnimation; 108 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 109 private float mChildrenOutlineAlpha = 0; 110 111 // These properties refer to the background protection gradient used for AllApps and Customize 112 private ValueAnimator mBackgroundFadeInAnimation; 113 private ValueAnimator mBackgroundFadeOutAnimation; 114 private Drawable mBackground; 115 private Drawable mCustomizeTrayBackground; 116 boolean mDrawBackground = true; 117 private boolean mDrawCustomizeTrayBackground; 118 private float mBackgroundAlpha = 0; 119 private float mOverScrollMaxBackgroundAlpha = 0.0f; 120 private int mOverScrollPageIndex = -1; 121 122 private View mCustomizationDrawer; 123 private View mCustomizationDrawerContent; 124 private int[] mCustomizationDrawerPos = new int[2]; 125 private float[] mCustomizationDrawerTransformedPos = new float[2]; 126 127 private final WallpaperManager mWallpaperManager; 128 private IBinder mWindowToken; 129 130 private int mDefaultPage; 131 132 private boolean mIsDragInProcess = false; 133 private boolean mIsDraggingOverIcon = false; 134 135 /** 136 * CellInfo for the cell that is currently being dragged 137 */ 138 private CellLayout.CellInfo mDragInfo; 139 140 /** 141 * Target drop area calculated during last acceptDrop call. 142 */ 143 private int[] mTargetCell = null; 144 145 /** 146 * The CellLayout that is currently being dragged over 147 */ 148 private CellLayout mDragTargetLayout = null; 149 150 private Launcher mLauncher; 151 private IconCache mIconCache; 152 private DragController mDragController; 153 154 // These are temporary variables to prevent having to allocate a new object just to 155 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 156 private int[] mTempCell = new int[2]; 157 private int[] mTempEstimate = new int[2]; 158 private float[] mDragViewVisualCenter = new float[2]; 159 private float[] mTempDragCoordinates = new float[2]; 160 private float[] mTempTouchCoordinates = new float[2]; 161 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 162 private float[] mTempDragBottomRightCoordinates = new float[2]; 163 private Matrix mTempInverseMatrix = new Matrix(); 164 private int[] mTempLocation = new int[2]; 165 166 private SpringLoadedDragController mSpringLoadedDragController; 167 168 private static final int DEFAULT_CELL_COUNT_X = 4; 169 private static final int DEFAULT_CELL_COUNT_Y = 4; 170 171 private Drawable mPreviousIndicator; 172 private Drawable mNextIndicator; 173 174 // State variable that indicates whether the pages are small (ie when you're 175 // in all apps or customize mode) 176 private boolean mIsSmall = false; 177 private boolean mIsInUnshrinkAnimation = false; 178 private AnimatorListener mShrinkAnimationListener; 179 private AnimatorListener mUnshrinkAnimationListener; 180 enum ShrinkState { TOP, SPRING_LOADED, MIDDLE, BOTTOM_HIDDEN, BOTTOM_VISIBLE }; 181 private ShrinkState mShrinkState; 182 private boolean mWasSpringLoadedOnDragExit = false; 183 private boolean mWaitingToShrink = false; 184 private ShrinkState mWaitingToShrinkState; 185 private AnimatorSet mAnimator; 186 187 /** Is the user is dragging an item near the edge of a page? */ 188 private boolean mInScrollArea = false; 189 190 /** If mInScrollArea is true, the direction of the scroll. */ 191 private int mPendingScrollDirection = DragController.SCROLL_NONE; 192 193 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 194 private Bitmap mDragOutline = null; 195 private final Rect mTempRect = new Rect(); 196 private final int[] mTempXY = new int[2]; 197 198 private ValueAnimator mDropAnim = null; 199 private TimeInterpolator mQuintEaseOutInterpolator = new DecelerateInterpolator(2.5f); 200 private View mDropView = null; 201 private int[] mDropViewPos = new int[] { -1, -1 }; 202 203 // Paint used to draw external drop outline 204 private final Paint mExternalDragOutlinePaint = new Paint(); 205 206 // Camera and Matrix used to determine the final position of a neighboring CellLayout 207 private final Matrix mMatrix = new Matrix(); 208 private final Camera mCamera = new Camera(); 209 private final float mTempFloat2[] = new float[2]; 210 211 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 212 int mWallpaperWidth; 213 int mWallpaperHeight; 214 WallpaperOffsetInterpolator mWallpaperOffset; 215 boolean mUpdateWallpaperOffsetImmediately = false; 216 boolean mSyncWallpaperOffsetWithScroll = true; 217 private Runnable mDelayedResizeRunnable; 218 219 // info about the last drag 220 private DragView mLastDragView; 221 private int mLastDragOriginX; 222 private int mLastDragOriginY; 223 private int mLastDragXOffset; 224 private int mLastDragYOffset; 225 226 private ArrayList<FolderIcon> mFolderOuterRings = new ArrayList<FolderIcon>(); 227 228 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 229 private float mXDown; 230 private float mYDown; 231 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 232 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 233 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 234 235 /** 236 * Used to inflate the Workspace from XML. 237 * 238 * @param context The application's context. 239 * @param attrs The attributes set containing the Workspace's customization values. 240 */ 241 public Workspace(Context context, AttributeSet attrs) { 242 this(context, attrs, 0); 243 } 244 245 /** 246 * Used to inflate the Workspace from XML. 247 * 248 * @param context The application's context. 249 * @param attrs The attributes set containing the Workspace's customization values. 250 * @param defStyle Unused. 251 */ 252 public Workspace(Context context, AttributeSet attrs, int defStyle) { 253 super(context, attrs, defStyle); 254 mContentIsRefreshable = false; 255 256 if (!LauncherApplication.isScreenLarge()) { 257 mFadeInAdjacentScreens = false; 258 } 259 260 mWallpaperManager = WallpaperManager.getInstance(context); 261 262 int cellCountX = DEFAULT_CELL_COUNT_X; 263 int cellCountY = DEFAULT_CELL_COUNT_Y; 264 265 TypedArray a = context.obtainStyledAttributes(attrs, 266 R.styleable.Workspace, defStyle, 0); 267 268 if (LauncherApplication.isScreenLarge()) { 269 final Resources res = context.getResources(); 270 final DisplayMetrics dm = res.getDisplayMetrics(); 271 float widthDp = dm.widthPixels / dm.density; 272 float heightDp = dm.heightPixels / dm.density; 273 274 final float statusBarHeight = res.getDimension(R.dimen.status_bar_height); 275 TypedArray actionBarSizeTypedArray = 276 context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize }); 277 float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); 278 279 if (heightDp > widthDp) { 280 float temp = widthDp; 281 widthDp = heightDp; 282 heightDp = temp; 283 } 284 int cellCountXLand = 1; 285 int cellCountXPort = 1; 286 while (2*mPageSpacing + CellLayout.widthInLandscape(res, cellCountXLand + 1) <= widthDp) { 287 cellCountXLand++; 288 } 289 while (CellLayout.widthInPortrait(res, cellCountXPort + 1) <= heightDp) { 290 cellCountXPort++; 291 } 292 cellCountX = Math.min(cellCountXLand, cellCountXPort); 293 294 int cellCountYLand = 1; 295 int cellCountYPort = 1; 296 while (statusBarHeight + actionBarHeight + 297 CellLayout.heightInLandscape(res, cellCountYLand + 1) <= heightDp) { 298 cellCountYLand++; 299 } 300 while (statusBarHeight + actionBarHeight + 301 CellLayout.heightInPortrait(res, cellCountYPort + 1) <= widthDp) { 302 cellCountYPort++; 303 } 304 cellCountY = Math.min(cellCountYLand, cellCountYPort); 305 } 306 307 // if the value is manually specified, use that instead 308 cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX); 309 cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY); 310 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 311 a.recycle(); 312 313 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 314 setHapticFeedbackEnabled(false); 315 316 initWorkspace(); 317 318 // Disable multitouch across the workspace/all apps/customize tray 319 setMotionEventSplittingEnabled(true); 320 } 321 322 /** 323 * Initializes various states for this workspace. 324 */ 325 protected void initWorkspace() { 326 Context context = getContext(); 327 mCurrentPage = mDefaultPage; 328 Launcher.setScreen(mCurrentPage); 329 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 330 mIconCache = app.getIconCache(); 331 mExternalDragOutlinePaint.setAntiAlias(true); 332 setWillNotDraw(false); 333 334 try { 335 final Resources res = getResources(); 336 mBackground = res.getDrawable(R.drawable.all_apps_bg_gradient); 337 mCustomizeTrayBackground = res.getDrawable(R.drawable.customize_bg_gradient); 338 } catch (Resources.NotFoundException e) { 339 // In this case, we will skip drawing background protection 340 } 341 342 mUnshrinkAnimationListener = new AnimatorListenerAdapter() { 343 @Override 344 public void onAnimationStart(Animator animation) { 345 mIsInUnshrinkAnimation = true; 346 } 347 348 @Override 349 public void onAnimationEnd(Animator animation) { 350 mIsInUnshrinkAnimation = false; 351 mSyncWallpaperOffsetWithScroll = true; 352 if (mShrinkState == ShrinkState.SPRING_LOADED) { 353 View layout = null; 354 if (mLastDragView != null) { 355 layout = findMatchingPageForDragOver(mLastDragView, mLastDragOriginX, 356 mLastDragOriginY, mLastDragXOffset, mLastDragYOffset); 357 } 358 mSpringLoadedDragController.onEnterSpringLoadedMode(layout == null); 359 } else { 360 mDrawCustomizeTrayBackground = false; 361 } 362 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 363 mAnimator = null; 364 enableChildrenLayers(false); 365 } 366 }; 367 mShrinkAnimationListener = new AnimatorListenerAdapter() { 368 @Override 369 public void onAnimationStart(Animator animation) { 370 enableChildrenLayers(true); 371 } 372 @Override 373 public void onAnimationEnd(Animator animation) { 374 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 375 mAnimator = null; 376 } 377 }; 378 mSnapVelocity = 600; 379 mWallpaperOffset = new WallpaperOffsetInterpolator(); 380 } 381 382 @Override 383 protected int getScrollMode() { 384 if (LauncherApplication.isScreenLarge()) { 385 return SmoothPagedView.X_LARGE_MODE; 386 } else { 387 return SmoothPagedView.DEFAULT_MODE; 388 } 389 } 390 391 private void onAddView(View child) { 392 if (!(child instanceof CellLayout)) { 393 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 394 } 395 CellLayout cl = ((CellLayout) child); 396 cl.setOnInterceptTouchListener(this); 397 cl.setOnClickListener(this); 398 cl.setClickable(true); 399 cl.enableHardwareLayers(); 400 } 401 402 @Override 403 public void addView(View child, int index, LayoutParams params) { 404 onAddView(child); 405 super.addView(child, index, params); 406 } 407 408 @Override 409 public void addView(View child) { 410 onAddView(child); 411 super.addView(child); 412 } 413 414 @Override 415 public void addView(View child, int index) { 416 onAddView(child); 417 super.addView(child, index); 418 } 419 420 @Override 421 public void addView(View child, int width, int height) { 422 onAddView(child); 423 super.addView(child, width, height); 424 } 425 426 @Override 427 public void addView(View child, LayoutParams params) { 428 onAddView(child); 429 super.addView(child, params); 430 } 431 432 /** 433 * @return The open folder on the current screen, or null if there is none 434 */ 435 Folder getOpenFolder() { 436 ViewGroup currentPage = ((CellLayout) getChildAt(mCurrentPage)).getChildrenLayout(); 437 int count = currentPage.getChildCount(); 438 for (int i = 0; i < count; i++) { 439 View child = currentPage.getChildAt(i); 440 if (child instanceof Folder) { 441 Folder folder = (Folder) child; 442 if (folder.getInfo().opened) 443 return folder; 444 } 445 } 446 return null; 447 } 448 449 ArrayList<Folder> getOpenFolders() { 450 final int screenCount = getChildCount(); 451 ArrayList<Folder> folders = new ArrayList<Folder>(screenCount); 452 453 for (int screen = 0; screen < screenCount; screen++) { 454 ViewGroup currentPage = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 455 int count = currentPage.getChildCount(); 456 for (int i = 0; i < count; i++) { 457 View child = currentPage.getChildAt(i); 458 if (child instanceof Folder) { 459 Folder folder = (Folder) child; 460 if (folder.getInfo().opened) 461 folders.add(folder); 462 break; 463 } 464 } 465 } 466 return folders; 467 } 468 469 boolean isTouchActive() { 470 return mTouchState != TOUCH_STATE_REST; 471 } 472 473 /** 474 * Adds the specified child in the specified screen. The position and dimension of 475 * the child are defined by x, y, spanX and spanY. 476 * 477 * @param child The child to add in one of the workspace's screens. 478 * @param screen The screen in which to add the child. 479 * @param x The X position of the child in the screen's grid. 480 * @param y The Y position of the child in the screen's grid. 481 * @param spanX The number of cells spanned horizontally by the child. 482 * @param spanY The number of cells spanned vertically by the child. 483 */ 484 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY) { 485 addInScreen(child, screen, x, y, spanX, spanY, false); 486 } 487 488 void addInFullScreen(View child, int screen) { 489 addInScreen(child, screen, 0, 0, -1, -1); 490 } 491 492 /** 493 * Adds the specified child in the specified screen. The position and dimension of 494 * the child are defined by x, y, spanX and spanY. 495 * 496 * @param child The child to add in one of the workspace's screens. 497 * @param screen The screen in which to add the child. 498 * @param x The X position of the child in the screen's grid. 499 * @param y The Y position of the child in the screen's grid. 500 * @param spanX The number of cells spanned horizontally by the child. 501 * @param spanY The number of cells spanned vertically by the child. 502 * @param insert When true, the child is inserted at the beginning of the children list. 503 */ 504 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY, boolean insert) { 505 if (screen < 0 || screen >= getChildCount()) { 506 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 507 + " (was " + screen + "); skipping child"); 508 return; 509 } 510 511 final CellLayout group = (CellLayout) getChildAt(screen); 512 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 513 if (lp == null) { 514 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 515 } else { 516 lp.cellX = x; 517 lp.cellY = y; 518 lp.cellHSpan = spanX; 519 lp.cellVSpan = spanY; 520 } 521 522 if (spanX < 0 && spanY < 0) { 523 lp.isLockedToGrid = false; 524 } 525 526 // Get the canonical child id to uniquely represent this view in this screen 527 int childId = LauncherModel.getCellLayoutChildId(-1, screen, x, y, spanX, spanY); 528 boolean markCellsAsOccupied = !(child instanceof Folder); 529 if (!group.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 530 // TODO: This branch occurs when the workspace is adding views 531 // outside of the defined grid 532 // maybe we should be deleting these items from the LauncherModel? 533 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 534 } 535 536 if (!(child instanceof Folder)) { 537 child.setHapticFeedbackEnabled(false); 538 child.setOnLongClickListener(mLongClickListener); 539 } 540 if (child instanceof DropTarget) { 541 mDragController.addDropTarget((DropTarget) child); 542 } 543 } 544 545 /** 546 * Check if the point (x, y) hits a given page. 547 */ 548 private boolean hitsPage(int index, float x, float y) { 549 final View page = getChildAt(index); 550 if (page != null) { 551 float[] localXY = { x, y }; 552 mapPointFromSelfToChild(page, localXY); 553 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 554 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 555 } 556 return false; 557 } 558 559 @Override 560 protected boolean hitsPreviousPage(float x, float y) { 561 // mNextPage is set to INVALID_PAGE whenever we are stationary. 562 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 563 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 564 return hitsPage(current - 1, x, y); 565 } 566 567 @Override 568 protected boolean hitsNextPage(float x, float y) { 569 // mNextPage is set to INVALID_PAGE whenever we are stationary. 570 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 571 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 572 return hitsPage(current + 1, x, y); 573 } 574 575 /** 576 * Called directly from a CellLayout (not by the framework), after we've been added as a 577 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 578 * that it should intercept touch events, which is not something that is normally supported. 579 */ 580 @Override 581 public boolean onTouch(View v, MotionEvent event) { 582 return (mIsSmall || mIsInUnshrinkAnimation); 583 } 584 585 /** 586 * Handle a click event on a CellLayout. 587 */ 588 @Override 589 public void onClick(View cellLayout) { 590 // Only allow clicks on a CellLayout if it is shrunken and visible. 591 if ((mIsSmall || mIsInUnshrinkAnimation) && mShrinkState != ShrinkState.BOTTOM_HIDDEN) { 592 mLauncher.onWorkspaceClick((CellLayout) cellLayout); 593 } 594 } 595 596 protected void onWindowVisibilityChanged (int visibility) { 597 mLauncher.onWindowVisibilityChanged(visibility); 598 } 599 600 @Override 601 public boolean dispatchUnhandledMove(View focused, int direction) { 602 if (mIsSmall || mIsInUnshrinkAnimation) { 603 // when the home screens are shrunken, shouldn't allow side-scrolling 604 return false; 605 } 606 return super.dispatchUnhandledMove(focused, direction); 607 } 608 609 @Override 610 public boolean onInterceptTouchEvent(MotionEvent ev) { 611 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 612 mXDown = ev.getX(); 613 mYDown = ev.getY(); 614 } 615 616 if (mIsSmall || mIsInUnshrinkAnimation) { 617 if (mLauncher.isAllAppsVisible() && mShrinkState == ShrinkState.BOTTOM_HIDDEN) { 618 // Intercept this event so we can show the workspace in full view 619 // when it is clicked on and it is small 620 AllAppsPagedView allApps = (AllAppsPagedView) 621 mLauncher.findViewById(R.id.all_apps_paged_view); 622 if (allApps != null) { 623 allApps.onInterceptTouchEvent(ev); 624 } 625 return true; 626 } 627 return false; 628 } 629 return super.onInterceptTouchEvent(ev); 630 } 631 632 @Override 633 protected void determineScrollingStart(MotionEvent ev) { 634 if (!mIsSmall && !mIsInUnshrinkAnimation) { 635 float deltaX = Math.abs(ev.getX() - mXDown); 636 float deltaY = Math.abs(ev.getY() - mYDown); 637 638 if (Float.compare(deltaX, 0f) == 0) return; 639 640 float slope = deltaY / deltaX; 641 float theta = (float) Math.atan(slope); 642 643 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 644 cancelCurrentPageLongPress(); 645 } 646 647 if (theta > MAX_SWIPE_ANGLE) { 648 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 649 return; 650 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 651 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 652 // increase the touch slop to make it harder to begin scrolling the workspace. This 653 // results in vertically scrolling widgets to more easily. The higher the angle, the 654 // more we increase touch slop. 655 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 656 float extraRatio = (float) 657 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 658 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 659 } else { 660 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 661 super.determineScrollingStart(ev); 662 } 663 } 664 } 665 666 protected void onPageBeginMoving() { 667 if (mNextPage != INVALID_PAGE) { 668 // we're snapping to a particular screen 669 enableChildrenCache(mCurrentPage, mNextPage); 670 } else { 671 // this is when user is actively dragging a particular screen, they might 672 // swipe it either left or right (but we won't advance by more than one screen) 673 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 674 } 675 showOutlines(); 676 } 677 678 protected void onPageEndMoving() { 679 clearChildrenCache(); 680 // Hide the outlines, as long as we're not dragging 681 if (!mDragController.dragging()) { 682 hideOutlines(); 683 } 684 mOverScrollMaxBackgroundAlpha = 0.0f; 685 mOverScrollPageIndex = -1; 686 687 if (mDelayedResizeRunnable != null) { 688 mDelayedResizeRunnable.run(); 689 mDelayedResizeRunnable = null; 690 } 691 } 692 693 @Override 694 protected void notifyPageSwitchListener() { 695 super.notifyPageSwitchListener(); 696 697 if (mPreviousIndicator != null) { 698 // if we know the next page, we show the indication for it right away; it looks 699 // weird if the indicators are lagging 700 int page = mNextPage; 701 if (page == INVALID_PAGE) { 702 page = mCurrentPage; 703 } 704 mPreviousIndicator.setLevel(page); 705 mNextIndicator.setLevel(page); 706 } 707 Launcher.setScreen(mCurrentPage); 708 }; 709 710 // As a ratio of screen height, the total distance we want the parallax effect to span 711 // vertically 712 private float wallpaperTravelToScreenHeightRatio(int width, int height) { 713 return 1.1f; 714 } 715 716 // As a ratio of screen height, the total distance we want the parallax effect to span 717 // horizontally 718 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 719 float aspectRatio = width / (float) height; 720 721 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 722 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 723 // We will use these two data points to extrapolate how much the wallpaper parallax effect 724 // to span (ie travel) at any aspect ratio: 725 726 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 727 final float ASPECT_RATIO_PORTRAIT = 10/16f; 728 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 729 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 730 731 // To find out the desired width at different aspect ratios, we use the following two 732 // formulas, where the coefficient on x is the aspect ratio (width/height): 733 // (16/10)x + y = 1.5 734 // (10/16)x + y = 1.2 735 // We solve for x and y and end up with a final formula: 736 final float x = 737 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 738 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 739 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 740 return x * aspectRatio + y; 741 } 742 743 // The range of scroll values for Workspace 744 private int getScrollRange() { 745 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 746 } 747 748 protected void setWallpaperDimension() { 749 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 750 final int maxDim = Math.max(display.getWidth(), display.getHeight()); 751 final int minDim = Math.min(display.getWidth(), display.getHeight()); 752 753 // We need to ensure that there is enough extra space in the wallpaper for the intended 754 // parallax effects 755 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 756 mWallpaperHeight = (int)(maxDim * wallpaperTravelToScreenHeightRatio(maxDim, minDim)); 757 new Thread("setWallpaperDimension") { 758 public void run() { 759 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 760 } 761 }.start(); 762 } 763 764 public void setVerticalWallpaperOffset(float offset) { 765 mWallpaperOffset.setFinalY(offset); 766 } 767 public float getVerticalWallpaperOffset() { 768 return mWallpaperOffset.getCurrY(); 769 } 770 public void setHorizontalWallpaperOffset(float offset) { 771 mWallpaperOffset.setFinalX(offset); 772 } 773 public float getHorizontalWallpaperOffset() { 774 return mWallpaperOffset.getCurrX(); 775 } 776 777 private float wallpaperOffsetForCurrentScroll() { 778 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 779 final boolean isStaticWallpaper = (mWallpaperManager.getWallpaperInfo() == null); 780 // The wallpaper travel width is how far, from left to right, the wallpaper will move 781 // at this orientation (for example, in portrait mode we don't move all the way to the 782 // edges of the wallpaper, or otherwise the parallax effect would be too strong) 783 int wallpaperTravelWidth = (int) (display.getWidth() * 784 wallpaperTravelToScreenWidthRatio(display.getWidth(), display.getHeight())); 785 if (!isStaticWallpaper) { 786 wallpaperTravelWidth = mWallpaperWidth; 787 } 788 789 // Set wallpaper offset steps (1 / (number of screens - 1)) 790 // We have 3 vertical offset states (centered, and then top/bottom aligned 791 // for all apps/customize) 792 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f / (3 - 1)); 793 794 int scrollRange = getScrollRange(); 795 float scrollProgressOffset = 0; 796 797 // Account for overscroll: you only see the absolute edge of the wallpaper if 798 // you overscroll as far as you can in landscape mode. Only do this for static wallpapers 799 // because live wallpapers (and probably 3rd party wallpaper providers) rely on the offset 800 // being even intervals from 0 to 1 (eg [0, 0.25, 0.5, 0.75, 1]) 801 if (isStaticWallpaper) { 802 int overscrollOffset = (int) (maxOverScroll() * display.getWidth()); 803 scrollProgressOffset += overscrollOffset / (float) getScrollRange(); 804 scrollRange += 2 * overscrollOffset; 805 } 806 807 float scrollProgress = 808 mScrollX / (float) scrollRange + scrollProgressOffset; 809 float offsetInDips = wallpaperTravelWidth * scrollProgress + 810 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 811 float offset = offsetInDips / (float) mWallpaperWidth; 812 return offset; 813 } 814 private void syncWallpaperOffsetWithScroll() { 815 final boolean enableWallpaperEffects = isHardwareAccelerated(); 816 if (enableWallpaperEffects) { 817 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 818 } 819 } 820 821 public void updateWallpaperOffsetImmediately() { 822 mUpdateWallpaperOffsetImmediately = true; 823 } 824 825 private void updateWallpaperOffsets() { 826 boolean updateNow = false; 827 boolean keepUpdating = true; 828 if (mUpdateWallpaperOffsetImmediately) { 829 updateNow = true; 830 keepUpdating = false; 831 mWallpaperOffset.jumpToFinal(); 832 mUpdateWallpaperOffsetImmediately = false; 833 } else { 834 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 835 } 836 if (updateNow) { 837 if (mWindowToken != null) { 838 mWallpaperManager.setWallpaperOffsets(mWindowToken, 839 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 840 } 841 } 842 if (keepUpdating) { 843 fastInvalidate(); 844 } 845 } 846 847 class WallpaperOffsetInterpolator { 848 float mFinalHorizontalWallpaperOffset = 0.0f; 849 float mFinalVerticalWallpaperOffset = 0.5f; 850 float mHorizontalWallpaperOffset = 0.0f; 851 float mVerticalWallpaperOffset = 0.5f; 852 long mLastWallpaperOffsetUpdateTime; 853 boolean mIsMovingFast; 854 boolean mOverrideHorizontalCatchupConstant; 855 float mHorizontalCatchupConstant = 0.35f; 856 float mVerticalCatchupConstant = 0.35f; 857 858 public WallpaperOffsetInterpolator() { 859 } 860 861 public void setOverrideHorizontalCatchupConstant(boolean override) { 862 mOverrideHorizontalCatchupConstant = override; 863 } 864 865 public void setHorizontalCatchupConstant(float f) { 866 mHorizontalCatchupConstant = f; 867 } 868 869 public void setVerticalCatchupConstant(float f) { 870 mVerticalCatchupConstant = f; 871 } 872 873 public boolean computeScrollOffset() { 874 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 875 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 876 mIsMovingFast = false; 877 return false; 878 } 879 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 880 boolean isLandscape = display.getWidth() > display.getHeight(); 881 882 long currentTime = System.currentTimeMillis(); 883 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 884 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 885 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 886 887 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 888 if (!mIsMovingFast && xdiff > 0.07) { 889 mIsMovingFast = true; 890 } 891 892 float fractionToCatchUpIn1MsHorizontal; 893 if (mOverrideHorizontalCatchupConstant) { 894 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 895 } else if (mIsMovingFast) { 896 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 897 } else { 898 // slow 899 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 900 } 901 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 902 903 904 fractionToCatchUpIn1MsHorizontal /= 33f; 905 fractionToCatchUpIn1MsVertical /= 33f; 906 907 final float UPDATE_THRESHOLD = 0.00001f; 908 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 909 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 910 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 911 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 912 if (jumpToFinalValue) { 913 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 914 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 915 } else { 916 float percentToCatchUpVertical = 917 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 918 float percentToCatchUpHorizontal = 919 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 920 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 921 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 922 } 923 924 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 925 return true; 926 } 927 928 public float getCurrX() { 929 return mHorizontalWallpaperOffset; 930 } 931 932 public float getFinalX() { 933 return mFinalHorizontalWallpaperOffset; 934 } 935 936 public float getCurrY() { 937 return mVerticalWallpaperOffset; 938 } 939 940 public float getFinalY() { 941 return mFinalVerticalWallpaperOffset; 942 } 943 944 public void setFinalX(float x) { 945 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 946 } 947 948 public void setFinalY(float y) { 949 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 950 } 951 952 public void jumpToFinal() { 953 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 954 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 955 } 956 } 957 958 @Override 959 public void computeScroll() { 960 super.computeScroll(); 961 if (mSyncWallpaperOffsetWithScroll) { 962 syncWallpaperOffsetWithScroll(); 963 } 964 } 965 966 void showOutlines() { 967 if (!mIsSmall && !mIsInUnshrinkAnimation) { 968 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 969 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 970 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 971 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 972 mChildrenOutlineFadeInAnimation.start(); 973 } 974 } 975 976 void hideOutlines() { 977 if (!mIsSmall && !mIsInUnshrinkAnimation) { 978 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 979 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 980 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 981 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 982 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 983 mChildrenOutlineFadeOutAnimation.start(); 984 } 985 } 986 987 public void showOutlinesTemporarily() { 988 if (!mIsPageMoving && !isTouchActive()) { 989 snapToPage(mCurrentPage); 990 } 991 } 992 993 public void setChildrenOutlineAlpha(float alpha) { 994 mChildrenOutlineAlpha = alpha; 995 for (int i = 0; i < getChildCount(); i++) { 996 CellLayout cl = (CellLayout) getChildAt(i); 997 cl.setBackgroundAlpha(alpha); 998 } 999 } 1000 1001 public float getChildrenOutlineAlpha() { 1002 return mChildrenOutlineAlpha; 1003 } 1004 1005 void disableBackground() { 1006 mDrawBackground = false; 1007 } 1008 void enableBackground() { 1009 mDrawBackground = true; 1010 } 1011 1012 private void showBackgroundGradientForAllApps() { 1013 showBackgroundGradient(); 1014 mDrawCustomizeTrayBackground = false; 1015 } 1016 1017 private void showBackgroundGradientForCustomizeTray() { 1018 showBackgroundGradient(); 1019 mDrawCustomizeTrayBackground = true; 1020 } 1021 1022 private void showBackgroundGradient() { 1023 if (mBackground == null) return; 1024 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 1025 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 1026 mBackgroundFadeInAnimation = ValueAnimator.ofFloat(getBackgroundAlpha(), 1f); 1027 mBackgroundFadeInAnimation.addUpdateListener(new AnimatorUpdateListener() { 1028 public void onAnimationUpdate(ValueAnimator animation) { 1029 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1030 } 1031 }); 1032 mBackgroundFadeInAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1033 mBackgroundFadeInAnimation.setDuration(BACKGROUND_FADE_IN_DURATION); 1034 mBackgroundFadeInAnimation.start(); 1035 } 1036 1037 private void hideBackgroundGradient() { 1038 if (mBackground == null) return; 1039 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 1040 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 1041 mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(getBackgroundAlpha(), 0f); 1042 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1043 public void onAnimationUpdate(ValueAnimator animation) { 1044 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1045 } 1046 }); 1047 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1048 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1049 mBackgroundFadeOutAnimation.start(); 1050 } 1051 1052 public void setBackgroundAlpha(float alpha) { 1053 if (alpha != mBackgroundAlpha) { 1054 mBackgroundAlpha = alpha; 1055 invalidate(); 1056 } 1057 } 1058 1059 public float getBackgroundAlpha() { 1060 return mBackgroundAlpha; 1061 } 1062 1063 /** 1064 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 1065 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 1066 * as being larger. This method computes what offset the rotated view should be translated 1067 * in order to minimize this perceived gap. 1068 * @param degrees Angle of the view 1069 * @param width Width of the view 1070 * @param height Height of the view 1071 * @return Offset to be used in a View.setTranslationX() call 1072 */ 1073 private float getOffsetXForRotation(float degrees, int width, int height) { 1074 mMatrix.reset(); 1075 mCamera.save(); 1076 mCamera.rotateY(Math.abs(degrees)); 1077 mCamera.getMatrix(mMatrix); 1078 mCamera.restore(); 1079 1080 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 1081 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 1082 mTempFloat2[0] = width; 1083 mTempFloat2[1] = height; 1084 mMatrix.mapPoints(mTempFloat2); 1085 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 1086 } 1087 1088 float backgroundAlphaInterpolator(float r) { 1089 float pivotA = 0.1f; 1090 float pivotB = 0.4f; 1091 if (r < pivotA) { 1092 return 0; 1093 } else if (r > pivotB) { 1094 return 1.0f; 1095 } else { 1096 return (r - pivotA)/(pivotB - pivotA); 1097 } 1098 } 1099 1100 float overScrollBackgroundAlphaInterpolator(float r) { 1101 float threshold = 0.08f; 1102 1103 if (r > mOverScrollMaxBackgroundAlpha) { 1104 mOverScrollMaxBackgroundAlpha = r; 1105 } else if (r < mOverScrollMaxBackgroundAlpha) { 1106 r = mOverScrollMaxBackgroundAlpha; 1107 } 1108 1109 return Math.min(r / threshold, 1.0f); 1110 } 1111 1112 @Override 1113 protected void screenScrolled(int screenCenter) { 1114 // If the screen is not xlarge, then don't rotate the CellLayouts 1115 // NOTE: If we don't update the side pages alpha, then we should not hide the side pages. 1116 // see unshrink(). 1117 if (!LauncherApplication.isScreenLarge()) return; 1118 1119 final int halfScreenSize = getMeasuredWidth() / 2; 1120 1121 for (int i = 0; i < getChildCount(); i++) { 1122 CellLayout cl = (CellLayout) getChildAt(i); 1123 if (cl != null) { 1124 int totalDistance = getScaledMeasuredWidth(cl) + mPageSpacing; 1125 int delta = screenCenter - (getChildOffset(i) - 1126 getRelativeChildOffset(i) + halfScreenSize); 1127 1128 float scrollProgress = delta / (totalDistance * 1.0f); 1129 scrollProgress = Math.min(scrollProgress, 1.0f); 1130 scrollProgress = Math.max(scrollProgress, -1.0f); 1131 1132 // If the current page (i) is being overscrolled, we use a different 1133 // set of rules for setting the background alpha multiplier. 1134 if ((mScrollX < 0 && i == 0) || (mScrollX > mMaxScrollX && 1135 i == getChildCount() -1 )) { 1136 cl.setBackgroundAlphaMultiplier( 1137 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 1138 mOverScrollPageIndex = i; 1139 } else if (mOverScrollPageIndex != i) { 1140 cl.setBackgroundAlphaMultiplier( 1141 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1142 } 1143 1144 float rotation = WORKSPACE_ROTATION * scrollProgress; 1145 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1146 cl.setTranslationX(translationX); 1147 1148 cl.setRotationY(rotation); 1149 } 1150 } 1151 } 1152 1153 protected void onAttachedToWindow() { 1154 super.onAttachedToWindow(); 1155 mWindowToken = getWindowToken(); 1156 computeScroll(); 1157 mDragController.setWindowToken(mWindowToken); 1158 } 1159 1160 protected void onDetachedFromWindow() { 1161 mWindowToken = null; 1162 } 1163 1164 @Override 1165 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1166 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1167 mUpdateWallpaperOffsetImmediately = true; 1168 } 1169 super.onLayout(changed, left, top, right, bottom); 1170 1171 // if shrinkToBottom() is called on initialization, it has to be deferred 1172 // until after the first call to onLayout so that it has the correct width 1173 if (mWaitingToShrink) { 1174 // shrink can trigger a synchronous onLayout call, so we 1175 // post this to avoid a stack overflow / tangled onLayout calls 1176 post(new Runnable() { 1177 public void run() { 1178 shrink(mWaitingToShrinkState, false); 1179 mWaitingToShrink = false; 1180 } 1181 }); 1182 } 1183 1184 if (LauncherApplication.isInPlaceRotationEnabled()) { 1185 // When the device is rotated, the scroll position of the current screen 1186 // needs to be refreshed 1187 setCurrentPage(getCurrentPage()); 1188 } 1189 } 1190 1191 public void showFolderAccept(FolderIcon fi) { 1192 mFolderOuterRings.add(fi); 1193 } 1194 1195 public void hideFolderAccept(FolderIcon fi) { 1196 if (mFolderOuterRings.contains(fi)) { 1197 mFolderOuterRings.remove(fi); 1198 } 1199 } 1200 1201 @Override 1202 protected void onDraw(Canvas canvas) { 1203 updateWallpaperOffsets(); 1204 1205 // Draw the background gradient if necessary 1206 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1207 int alpha = (int) (mBackgroundAlpha * 255); 1208 if (mDrawCustomizeTrayBackground) { 1209 // Find out where to offset the gradient for the customization tray content 1210 mCustomizationDrawer.getLocationOnScreen(mCustomizationDrawerPos); 1211 final Matrix m = mCustomizationDrawer.getMatrix(); 1212 mCustomizationDrawerTransformedPos[0] = 0.0f; 1213 mCustomizationDrawerTransformedPos[1] = mCustomizationDrawerContent.getTop(); 1214 m.mapPoints(mCustomizationDrawerTransformedPos); 1215 1216 // Draw the bg glow behind the gradient 1217 mCustomizeTrayBackground.setAlpha(alpha); 1218 mCustomizeTrayBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1219 getMeasuredHeight()); 1220 mCustomizeTrayBackground.draw(canvas); 1221 1222 // Draw the bg gradient 1223 final int offset = (int) (mCustomizationDrawerPos[1] + 1224 mCustomizationDrawerTransformedPos[1]); 1225 mBackground.setAlpha(alpha); 1226 mBackground.setBounds(mScrollX, offset, mScrollX + getMeasuredWidth(), 1227 offset + getMeasuredHeight()); 1228 mBackground.draw(canvas); 1229 } else { 1230 mBackground.setAlpha(alpha); 1231 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1232 getMeasuredHeight()); 1233 mBackground.draw(canvas); 1234 } 1235 } 1236 1237 // The folder outer ring image(s) 1238 for (int i = 0; i < mFolderOuterRings.size(); i++) { 1239 FolderIcon fi = mFolderOuterRings.get(i); 1240 final Drawable d = FolderIcon.sFolderOuterRingDrawable; 1241 final int width = (int) (d.getIntrinsicWidth() * fi.getOuterRingScale()); 1242 final int height = (int) (d.getIntrinsicHeight() * fi.getOuterRingScale()); 1243 fi.getFolderLocation(mTempLocation); 1244 final int x = mTempLocation[0] + mScrollX - width / 2; 1245 final int y = mTempLocation[1] + mScrollY - height / 2; 1246 d.setBounds(x, y, x + width, y + height); 1247 d.draw(canvas); 1248 } 1249 super.onDraw(canvas); 1250 } 1251 1252 @Override 1253 protected void dispatchDraw(Canvas canvas) { 1254 if (mIsSmall || mIsInUnshrinkAnimation) { 1255 // Draw all the workspaces if we're small 1256 final int pageCount = getChildCount(); 1257 final long drawingTime = getDrawingTime(); 1258 for (int i = 0; i < pageCount; i++) { 1259 final CellLayout page = (CellLayout) getChildAt(i); 1260 if (page.getVisibility() == VISIBLE 1261 && (page.getAlpha() != 0f || page.getBackgroundAlpha() != 0f)) { 1262 drawChild(canvas, page, drawingTime); 1263 } 1264 } 1265 } else { 1266 super.dispatchDraw(canvas); 1267 1268 final int width = getWidth(); 1269 final int height = getHeight(); 1270 1271 // In portrait orientation, draw the glowing edge when dragging to adjacent screens 1272 if (mInScrollArea && (height > width)) { 1273 final int pageHeight = getChildAt(0).getHeight(); 1274 1275 // This determines the height of the glowing edge: 90% of the page height 1276 final int padding = (int) ((height - pageHeight) * 0.5f + pageHeight * 0.1f); 1277 1278 final CellLayout leftPage = (CellLayout) getChildAt(mCurrentPage - 1); 1279 final CellLayout rightPage = (CellLayout) getChildAt(mCurrentPage + 1); 1280 1281 if (leftPage != null && leftPage.getIsDragOverlapping()) { 1282 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left); 1283 d.setBounds(mScrollX, padding, mScrollX + d.getIntrinsicWidth(), height - padding); 1284 d.draw(canvas); 1285 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 1286 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right); 1287 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), padding, mScrollX + width, height - padding); 1288 d.draw(canvas); 1289 } 1290 } 1291 1292 if (mDropView != null) { 1293 // We are animating an item that was just dropped on the home screen. 1294 // Render its View in the current animation position. 1295 canvas.save(Canvas.MATRIX_SAVE_FLAG); 1296 final int xPos = mDropViewPos[0] - mDropView.getScrollX(); 1297 final int yPos = mDropViewPos[1] - mDropView.getScrollY(); 1298 canvas.translate(xPos, yPos); 1299 mDropView.draw(canvas); 1300 canvas.restore(); 1301 } 1302 } 1303 } 1304 1305 @Override 1306 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1307 if (!mLauncher.isAllAppsVisible()) { 1308 final Folder openFolder = getOpenFolder(); 1309 if (openFolder != null) { 1310 return openFolder.requestFocus(direction, previouslyFocusedRect); 1311 } else { 1312 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1313 } 1314 } 1315 return false; 1316 } 1317 1318 @Override 1319 public int getDescendantFocusability() { 1320 if (mIsSmall) { 1321 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1322 } 1323 return super.getDescendantFocusability(); 1324 } 1325 1326 @Override 1327 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1328 if (!mLauncher.isAllAppsVisible()) { 1329 final Folder openFolder = getOpenFolder(); 1330 if (openFolder != null) { 1331 openFolder.addFocusables(views, direction); 1332 } else { 1333 super.addFocusables(views, direction, focusableMode); 1334 } 1335 } 1336 } 1337 1338 void enableChildrenCache(int fromPage, int toPage) { 1339 if (fromPage > toPage) { 1340 final int temp = fromPage; 1341 fromPage = toPage; 1342 toPage = temp; 1343 } 1344 1345 final int screenCount = getChildCount(); 1346 1347 fromPage = Math.max(fromPage, 0); 1348 toPage = Math.min(toPage, screenCount - 1); 1349 1350 for (int i = fromPage; i <= toPage; i++) { 1351 final CellLayout layout = (CellLayout) getChildAt(i); 1352 layout.setChildrenDrawnWithCacheEnabled(true); 1353 layout.setChildrenDrawingCacheEnabled(true); 1354 } 1355 } 1356 1357 void clearChildrenCache() { 1358 final int screenCount = getChildCount(); 1359 for (int i = 0; i < screenCount; i++) { 1360 final CellLayout layout = (CellLayout) getChildAt(i); 1361 layout.setChildrenDrawnWithCacheEnabled(false); 1362 } 1363 } 1364 1365 @Override 1366 public boolean onTouchEvent(MotionEvent ev) { 1367 if (mLauncher.isAllAppsVisible() && mShrinkState == ShrinkState.BOTTOM_HIDDEN) { 1368 PagedView appsPane; 1369 if (LauncherApplication.isScreenLarge()) { 1370 appsPane = (PagedView) mLauncher.findViewById(R.id.all_apps_paged_view); 1371 } else { 1372 appsPane = (PagedView) mLauncher.findViewById(R.id.apps_customize_pane_content); 1373 } 1374 1375 if (appsPane != null) { 1376 if (ev.getAction() == MotionEvent.ACTION_UP && 1377 appsPane.getTouchState() == TOUCH_STATE_REST) { 1378 1379 // Cancel any scrolling that is in progress. 1380 if (!mScroller.isFinished()) { 1381 mScroller.abortAnimation(); 1382 } 1383 setCurrentPage(mCurrentPage); 1384 1385 if (mShrinkState == ShrinkState.BOTTOM_HIDDEN) { 1386 mLauncher.showWorkspace(true); 1387 } 1388 appsPane.onTouchEvent(ev); 1389 return true; 1390 } else { 1391 return appsPane.onTouchEvent(ev); 1392 } 1393 } 1394 } 1395 return super.onTouchEvent(ev); 1396 } 1397 1398 protected void enableChildrenLayers(boolean enable) { 1399 for (int i = 0; i < getPageCount(); i++) { 1400 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(enable); 1401 } 1402 } 1403 @Override 1404 protected void pageBeginMoving() { 1405 enableChildrenLayers(true); 1406 super.pageBeginMoving(); 1407 } 1408 1409 @Override 1410 protected void pageEndMoving() { 1411 if (!mIsSmall && !mIsInUnshrinkAnimation) { 1412 enableChildrenLayers(false); 1413 } 1414 super.pageEndMoving(); 1415 } 1416 1417 @Override 1418 protected void onWallpaperTap(MotionEvent ev) { 1419 final int[] position = mTempCell; 1420 getLocationOnScreen(position); 1421 1422 int pointerIndex = ev.getActionIndex(); 1423 position[0] += (int) ev.getX(pointerIndex); 1424 position[1] += (int) ev.getY(pointerIndex); 1425 1426 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1427 ev.getAction() == MotionEvent.ACTION_UP 1428 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1429 position[0], position[1], 0, null); 1430 } 1431 1432 public boolean isSmall() { 1433 return mIsSmall; 1434 } 1435 1436 private float getYScaleForScreen(int screen) { 1437 int x = Math.abs(screen - 2); 1438 1439 // TODO: This should be generalized for use with arbitrary rotation angles. 1440 switch(x) { 1441 case 0: return EXTRA_SCALE_FACTOR_0; 1442 case 1: return EXTRA_SCALE_FACTOR_1; 1443 case 2: return EXTRA_SCALE_FACTOR_2; 1444 } 1445 return 1.0f; 1446 } 1447 1448 public void shrink(ShrinkState shrinkState) { 1449 shrink(shrinkState, true); 1450 } 1451 1452 private int getCustomizeDrawerHeight() { 1453 TabHost customizationDrawer = mLauncher.getCustomizationDrawer(); 1454 int height = customizationDrawer.getHeight(); 1455 TabWidget tabWidget = (TabWidget) 1456 customizationDrawer.findViewById(com.android.internal.R.id.tabs); 1457 if (tabWidget.getTabCount() > 0) { 1458 TextView tabText = (TextView) tabWidget.getChildTabViewAt(0); 1459 // subtract the empty space above the tab text 1460 height -= ((tabWidget.getHeight() - tabText.getLineHeight())) / 2; 1461 } 1462 return height; 1463 } 1464 1465 // we use this to shrink the workspace for the all apps view and the customize view 1466 public void shrink(ShrinkState shrinkState, boolean animated) { 1467 if (mFirstLayout) { 1468 // (mFirstLayout == "first layout has not happened yet") 1469 // if we get a call to shrink() as part of our initialization (for example, if 1470 // Launcher is started in All Apps mode) then we need to wait for a layout call 1471 // to get our width so we can layout the mini-screen views correctly 1472 mWaitingToShrink = true; 1473 mWaitingToShrinkState = shrinkState; 1474 return; 1475 } 1476 // Stop any scrolling, move to the current page right away 1477 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1478 if (!mIsDragInProcess) { 1479 updateWhichPagesAcceptDrops(shrinkState); 1480 } 1481 1482 CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 1483 if (currentPage == null) { 1484 Log.w(TAG, "currentPage is NULL! mCurrentPage " + mCurrentPage 1485 + " mNextPage " + mNextPage); 1486 return; 1487 } 1488 if (currentPage.getBackgroundAlphaMultiplier() < 1.0f) { 1489 currentPage.setBackgroundAlpha(0.0f); 1490 } 1491 currentPage.setBackgroundAlphaMultiplier(1.0f); 1492 1493 mIsSmall = true; 1494 mShrinkState = shrinkState; 1495 1496 // we intercept and reject all touch events when we're small, so be sure to reset the state 1497 mTouchState = TOUCH_STATE_REST; 1498 mActivePointerId = INVALID_POINTER; 1499 1500 final Resources res = getResources(); 1501 final int screenWidth = getWidth(); 1502 final int screenHeight = getHeight(); 1503 1504 // Making the assumption that all pages have the same width as the 0th 1505 final int pageWidth = getChildAt(0).getMeasuredWidth(); 1506 final int pageHeight = getChildAt(0).getMeasuredHeight(); 1507 1508 final int scaledPageWidth = (int) (SHRINK_FACTOR * pageWidth); 1509 final int scaledPageHeight = (int) (SHRINK_FACTOR * pageHeight); 1510 final float extraScaledSpacing = res.getDimension(R.dimen.smallScreenExtraSpacing); 1511 1512 final int screenCount = getChildCount(); 1513 float totalWidth = screenCount * scaledPageWidth + (screenCount - 1) * extraScaledSpacing; 1514 1515 boolean isPortrait = getMeasuredHeight() > getMeasuredWidth(); 1516 float y = (isPortrait ? 1517 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginPortrait) : 1518 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginLandscape)); 1519 float finalAlpha = 1.0f; 1520 float extraShrinkFactor = 1.0f; 1521 1522 if (shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1523 y = screenHeight - y - scaledPageHeight; 1524 } else if (shrinkState == ShrinkState.BOTTOM_HIDDEN) { 1525 // We shrink and disappear to nothing in the case of all apps 1526 // (which is when we shrink to the bottom) 1527 y = screenHeight - y - scaledPageHeight; 1528 finalAlpha = 0.0f; 1529 } else if (shrinkState == ShrinkState.MIDDLE) { 1530 y = screenHeight / 2 - scaledPageHeight / 2; 1531 finalAlpha = 1.0f; 1532 } else if (shrinkState == ShrinkState.TOP) { 1533 y = (screenHeight - getCustomizeDrawerHeight() - scaledPageHeight) / 2; 1534 } 1535 1536 int duration; 1537 if (shrinkState == ShrinkState.BOTTOM_HIDDEN || shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1538 duration = res.getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1539 } else { 1540 duration = res.getInteger(R.integer.config_customizeWorkspaceShrinkTime); 1541 } 1542 1543 // We animate all the screens to the centered position in workspace 1544 // At the same time, the screens become greyed/dimmed 1545 1546 // newX is initialized to the left-most position of the centered screens 1547 float x = mScroller.getFinalX() + screenWidth / 2 - totalWidth / 2; 1548 1549 // We are going to scale about the center of the view, so we need to adjust the positions 1550 // of the views accordingly 1551 x -= (pageWidth - scaledPageWidth) / 2.0f; 1552 y -= (pageHeight - scaledPageHeight) / 2.0f; 1553 1554 if (mAnimator != null) { 1555 mAnimator.cancel(); 1556 } 1557 1558 mAnimator = new AnimatorSet(); 1559 1560 final float[] oldXs = new float[getChildCount()]; 1561 final float[] oldYs = new float[getChildCount()]; 1562 final float[] oldScaleXs = new float[getChildCount()]; 1563 final float[] oldScaleYs = new float[getChildCount()]; 1564 final float[] oldBackgroundAlphas = new float[getChildCount()]; 1565 final float[] oldAlphas = new float[getChildCount()]; 1566 final float[] oldRotationYs = new float[getChildCount()]; 1567 final float[] newXs = new float[getChildCount()]; 1568 final float[] newYs = new float[getChildCount()]; 1569 final float[] newScaleXs = new float[getChildCount()]; 1570 final float[] newScaleYs = new float[getChildCount()]; 1571 final float[] newBackgroundAlphas = new float[getChildCount()]; 1572 final float[] newAlphas = new float[getChildCount()]; 1573 final float[] newRotationYs = new float[getChildCount()]; 1574 1575 for (int i = 0; i < screenCount; i++) { 1576 final CellLayout cl = (CellLayout) getChildAt(i); 1577 1578 float rotation = (-i + 2) * WORKSPACE_ROTATION; 1579 float rotationScaleX = (float) (1.0f / Math.cos(Math.PI * rotation / 180.0f)); 1580 float rotationScaleY = getYScaleForScreen(i); 1581 1582 oldAlphas[i] = cl.getAlpha(); 1583 newAlphas[i] = finalAlpha; 1584 if (animated && (oldAlphas[i] != 0f || newAlphas[i] != 0f)) { 1585 // if the CellLayout will be visible during the animation, force building its 1586 // hardware layer immediately so we don't see a blip later in the animation 1587 cl.buildChildrenLayer(); 1588 } 1589 if (animated) { 1590 oldXs[i] = cl.getX(); 1591 oldYs[i] = cl.getY(); 1592 oldScaleXs[i] = cl.getScaleX(); 1593 oldScaleYs[i] = cl.getScaleY(); 1594 oldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1595 oldRotationYs[i] = cl.getRotationY(); 1596 newXs[i] = x; 1597 newYs[i] = y; 1598 newScaleXs[i] = SHRINK_FACTOR * rotationScaleX * extraShrinkFactor; 1599 newScaleYs[i] = SHRINK_FACTOR * rotationScaleY * extraShrinkFactor; 1600 newBackgroundAlphas[i] = finalAlpha; 1601 newRotationYs[i] = rotation; 1602 } else { 1603 cl.setX((int)x); 1604 cl.setY((int)y); 1605 cl.setScaleX(SHRINK_FACTOR * rotationScaleX * extraShrinkFactor); 1606 cl.setScaleY(SHRINK_FACTOR * rotationScaleY * extraShrinkFactor); 1607 cl.setBackgroundAlpha(finalAlpha); 1608 cl.setAlpha(finalAlpha); 1609 cl.setRotationY(rotation); 1610 mShrinkAnimationListener.onAnimationEnd(null); 1611 } 1612 // increment newX for the next screen 1613 x += scaledPageWidth + extraScaledSpacing; 1614 } 1615 1616 float wallpaperOffset = 0.5f; 1617 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 1618 int wallpaperTravelHeight = (int) (display.getHeight() * 1619 wallpaperTravelToScreenHeightRatio(display.getWidth(), display.getHeight())); 1620 float offsetFromCenter = (wallpaperTravelHeight / (float) mWallpaperHeight) / 2f; 1621 boolean isLandscape = display.getWidth() > display.getHeight(); 1622 1623 final boolean enableWallpaperEffects = isHardwareAccelerated(); 1624 if (enableWallpaperEffects) { 1625 switch (shrinkState) { 1626 // animating in 1627 case TOP: 1628 // customize 1629 wallpaperOffset = 0.5f + offsetFromCenter; 1630 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.46f : 0.44f); 1631 break; 1632 case MIDDLE: 1633 case SPRING_LOADED: 1634 wallpaperOffset = 0.5f; 1635 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.34f : 0.32f); 1636 break; 1637 case BOTTOM_HIDDEN: 1638 case BOTTOM_VISIBLE: 1639 // allapps 1640 wallpaperOffset = 0.5f - offsetFromCenter; 1641 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.34f : 0.32f); 1642 break; 1643 } 1644 } 1645 1646 setLayoutScale(1.0f); 1647 if (animated) { 1648 if (enableWallpaperEffects) { 1649 mWallpaperOffset.setHorizontalCatchupConstant(0.46f); 1650 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1651 } 1652 1653 mSyncWallpaperOffsetWithScroll = false; 1654 1655 ValueAnimator animWithInterpolator = 1656 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1657 animWithInterpolator.setInterpolator(mZoomOutInterpolator); 1658 1659 final float oldHorizontalWallpaperOffset = getHorizontalWallpaperOffset(); 1660 final float oldVerticalWallpaperOffset = getVerticalWallpaperOffset(); 1661 final float newHorizontalWallpaperOffset = 0.5f; 1662 final float newVerticalWallpaperOffset = wallpaperOffset; 1663 animWithInterpolator.addUpdateListener(new LauncherAnimatorUpdateListener() { 1664 public void onAnimationUpdate(float a, float b) { 1665 if (b == 0f) { 1666 // an optimization, and required for correct behavior. 1667 return; 1668 } 1669 fastInvalidate(); 1670 if (enableWallpaperEffects) { 1671 setHorizontalWallpaperOffset( 1672 a * oldHorizontalWallpaperOffset + b * newHorizontalWallpaperOffset); 1673 setVerticalWallpaperOffset( 1674 a * oldVerticalWallpaperOffset + b * newVerticalWallpaperOffset); 1675 } 1676 for (int i = 0; i < screenCount; i++) { 1677 final CellLayout cl = (CellLayout) getChildAt(i); 1678 cl.fastInvalidate(); 1679 cl.setFastX(a * oldXs[i] + b * newXs[i]); 1680 cl.setFastY(a * oldYs[i] + b * newYs[i]); 1681 cl.setFastScaleX(a * oldScaleXs[i] + b * newScaleXs[i]); 1682 cl.setFastScaleY(a * oldScaleYs[i] + b * newScaleYs[i]); 1683 cl.setFastBackgroundAlpha( 1684 a * oldBackgroundAlphas[i] + b * newBackgroundAlphas[i]); 1685 cl.setFastAlpha(a * oldAlphas[i] + b * newAlphas[i]); 1686 cl.setFastRotationY(a * oldRotationYs[i] + b * newRotationYs[i]); 1687 } 1688 } 1689 }); 1690 mAnimator.playTogether(animWithInterpolator); 1691 mAnimator.addListener(mShrinkAnimationListener); 1692 mAnimator.start(); 1693 } else if (enableWallpaperEffects) { 1694 setVerticalWallpaperOffset(wallpaperOffset); 1695 setHorizontalWallpaperOffset(0.5f); 1696 updateWallpaperOffsetImmediately(); 1697 } 1698 setChildrenDrawnWithCacheEnabled(true); 1699 1700 if (shrinkState == ShrinkState.TOP) { 1701 showBackgroundGradientForCustomizeTray(); 1702 } else { 1703 showBackgroundGradientForAllApps(); 1704 } 1705 } 1706 1707 /* 1708 * This interpolator emulates the rate at which the perceived scale of an object changes 1709 * as its distance from a camera increases. When this interpolator is applied to a scale 1710 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1711 * from the camera. 1712 */ 1713 static class ZInterpolator implements TimeInterpolator { 1714 private float focalLength; 1715 1716 public ZInterpolator(float foc) { 1717 focalLength = foc; 1718 } 1719 1720 public float getInterpolation(float input) { 1721 return (1.0f - focalLength / (focalLength + input)) / 1722 (1.0f - focalLength / (focalLength + 1.0f)); 1723 } 1724 } 1725 1726 /* 1727 * The exact reverse of ZInterpolator. 1728 */ 1729 static class InverseZInterpolator implements TimeInterpolator { 1730 private ZInterpolator zInterpolator; 1731 public InverseZInterpolator(float foc) { 1732 zInterpolator = new ZInterpolator(foc); 1733 } 1734 public float getInterpolation(float input) { 1735 return 1 - zInterpolator.getInterpolation(1 - input); 1736 } 1737 } 1738 1739 /* 1740 * ZInterpolator compounded with an ease-out. 1741 */ 1742 static class ZoomOutInterpolator implements TimeInterpolator { 1743 private final ZInterpolator zInterpolator = new ZInterpolator(0.2f); 1744 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(1.8f); 1745 1746 public float getInterpolation(float input) { 1747 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1748 } 1749 } 1750 1751 /* 1752 * InvereZInterpolator compounded with an ease-out. 1753 */ 1754 static class ZoomInInterpolator implements TimeInterpolator { 1755 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1756 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1757 1758 public float getInterpolation(float input) { 1759 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1760 } 1761 } 1762 1763 private final ZoomOutInterpolator mZoomOutInterpolator = new ZoomOutInterpolator(); 1764 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1765 1766 private void updateWhichPagesAcceptDrops(ShrinkState state) { 1767 updateWhichPagesAcceptDropsHelper(state, false, 1, 1); 1768 } 1769 1770 private void updateWhichPagesAcceptDropsDuringDrag(ShrinkState state, int spanX, int spanY) { 1771 updateWhichPagesAcceptDropsHelper(state, true, spanX, spanY); 1772 } 1773 1774 private void updateWhichPagesAcceptDropsHelper( 1775 ShrinkState state, boolean isDragHappening, int spanX, int spanY) { 1776 final int screenCount = getChildCount(); 1777 for (int i = 0; i < screenCount; i++) { 1778 CellLayout cl = (CellLayout) getChildAt(i); 1779 cl.setIsDragOccuring(isDragHappening); 1780 if (state == null) { 1781 // If we are not in a shrunken state, mark all cell layouts as droppable (if they 1782 // have the space) 1783 cl.setAcceptsDrops(cl.findCellForSpan(null, spanX, spanY)); 1784 } else { 1785 switch (state) { 1786 case TOP: 1787 cl.setIsDefaultDropTarget(i == mCurrentPage); 1788 case BOTTOM_HIDDEN: 1789 case BOTTOM_VISIBLE: 1790 case SPRING_LOADED: 1791 if (state != ShrinkState.TOP) { 1792 cl.setIsDefaultDropTarget(false); 1793 } 1794 if (!isDragHappening) { 1795 // even if a drag isn't happening, we don't want to show a screen as 1796 // accepting drops if it doesn't have at least one free cell 1797 spanX = 1; 1798 spanY = 1; 1799 } 1800 // the page accepts drops if we can find at least one empty spot 1801 cl.setAcceptsDrops(cl.findCellForSpan(null, spanX, spanY)); 1802 break; 1803 default: 1804 throw new RuntimeException("Unhandled ShrinkState " + state); 1805 } 1806 } 1807 } 1808 } 1809 1810 /* 1811 * 1812 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1813 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1814 * 1815 * These methods mark the appropriate pages as accepting drops (which alters their visual 1816 * appearance). 1817 * 1818 */ 1819 public void onDragStartedWithItem(View v) { 1820 mIsDragInProcess = true; 1821 1822 final Canvas canvas = new Canvas(); 1823 1824 // We need to add extra padding to the bitmap to make room for the glow effect 1825 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1826 1827 // The outline is used to visualize where the item will land if dropped 1828 mDragOutline = createDragOutline(v, canvas, bitmapPadding); 1829 } 1830 1831 public void onDragStartedWithItemSpans(int spanX, int spanY, Bitmap b) { 1832 mIsDragInProcess = true; 1833 1834 final Canvas canvas = new Canvas(); 1835 1836 // We need to add extra padding to the bitmap to make room for the glow effect 1837 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1838 1839 CellLayout cl = (CellLayout) getChildAt(0); 1840 1841 int[] size = cl.cellSpansToSize(spanX, spanY); 1842 1843 // The outline is used to visualize where the item will land if dropped 1844 mDragOutline = createDragOutline(b, canvas, bitmapPadding, size[0], size[1]); 1845 1846 updateWhichPagesAcceptDropsDuringDrag(mShrinkState, spanX, spanY); 1847 } 1848 1849 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1850 // never dragged over 1851 public void onDragStopped(boolean success) { 1852 mLastDragView = null; 1853 // In the success case, DragController has already called onDragExit() 1854 if (!success) { 1855 doDragExit(); 1856 } 1857 mIsDragInProcess = false; 1858 updateWhichPagesAcceptDrops(mShrinkState); 1859 } 1860 1861 // We call this when we trigger an unshrink by clicking on the CellLayout cl 1862 public void unshrink(CellLayout clThatWasClicked) { 1863 unshrink(clThatWasClicked, false); 1864 } 1865 1866 public void unshrink(CellLayout clThatWasClicked, boolean springLoaded) { 1867 int newCurrentPage = indexOfChild(clThatWasClicked); 1868 if (mIsSmall) { 1869 if (springLoaded) { 1870 setLayoutScale(SPRING_LOADED_DRAG_SHRINK_FACTOR); 1871 } 1872 scrollToNewPageWithoutMovingPages(newCurrentPage); 1873 unshrink(true, springLoaded); 1874 } 1875 } 1876 1877 1878 public void enterSpringLoadedDragMode(CellLayout clThatWasClicked) { 1879 mShrinkState = ShrinkState.SPRING_LOADED; 1880 unshrink(clThatWasClicked, true); 1881 mDragTargetLayout.onDragEnter(); 1882 } 1883 1884 public void exitSpringLoadedDragMode(ShrinkState shrinkState) { 1885 shrink(shrinkState); 1886 if (mDragTargetLayout != null) { 1887 mDragTargetLayout.onDragExit(); 1888 } 1889 } 1890 1891 public void exitWidgetResizeMode() { 1892 DragLayer dragLayer = (DragLayer) mLauncher.findViewById(R.id.drag_layer); 1893 dragLayer.clearAllResizeFrames(); 1894 } 1895 1896 void unshrink(boolean animated) { 1897 unshrink(animated, false); 1898 } 1899 1900 void unshrink(boolean animated, boolean springLoaded) { 1901 mWaitingToShrink = false; 1902 if (mIsSmall) { 1903 float finalScaleFactor = 1.0f; 1904 float finalBackgroundAlpha = 0.0f; 1905 if (springLoaded) { 1906 finalScaleFactor = SPRING_LOADED_DRAG_SHRINK_FACTOR; 1907 finalBackgroundAlpha = 1.0f; 1908 } else { 1909 mIsSmall = false; 1910 } 1911 if (mAnimator != null) { 1912 mAnimator.cancel(); 1913 } 1914 1915 mAnimator = new AnimatorSet(); 1916 final int screenCount = getChildCount(); 1917 1918 final int duration = getResources().getInteger(R.integer.config_workspaceUnshrinkTime); 1919 1920 final float[] oldTranslationXs = new float[getChildCount()]; 1921 final float[] oldTranslationYs = new float[getChildCount()]; 1922 final float[] oldScaleXs = new float[getChildCount()]; 1923 final float[] oldScaleYs = new float[getChildCount()]; 1924 final float[] oldBackgroundAlphas = new float[getChildCount()]; 1925 final float[] oldBackgroundAlphaMultipliers = new float[getChildCount()]; 1926 final float[] oldAlphas = new float[getChildCount()]; 1927 final float[] oldRotationYs = new float[getChildCount()]; 1928 final float[] newTranslationXs = new float[getChildCount()]; 1929 final float[] newTranslationYs = new float[getChildCount()]; 1930 final float[] newScaleXs = new float[getChildCount()]; 1931 final float[] newScaleYs = new float[getChildCount()]; 1932 final float[] newBackgroundAlphas = new float[getChildCount()]; 1933 final float[] newBackgroundAlphaMultipliers = new float[getChildCount()]; 1934 final float[] newAlphas = new float[getChildCount()]; 1935 final float[] newRotationYs = new float[getChildCount()]; 1936 1937 for (int i = 0; i < screenCount; i++) { 1938 final CellLayout cl = (CellLayout)getChildAt(i); 1939 float finalAlphaValue = 0f; 1940 float rotation = 0f; 1941 if (LauncherApplication.isScreenLarge()) { 1942 finalAlphaValue = (i == mCurrentPage) ? 1.0f : 0.0f; 1943 1944 if (i < mCurrentPage) { 1945 rotation = WORKSPACE_ROTATION; 1946 } else if (i > mCurrentPage) { 1947 rotation = -WORKSPACE_ROTATION; 1948 } 1949 } else { 1950 // Don't hide the side panes on the phone if we don't also update the side pages 1951 // alpha. See screenScrolled(). 1952 finalAlphaValue = 1f; 1953 } 1954 float finalAlphaMultiplierValue = 1955 ((i == mCurrentPage) && (mShrinkState != ShrinkState.SPRING_LOADED)) ? 1956 0.0f : 1.0f; 1957 1958 float translation = 0f; 1959 1960 // If the screen is not xlarge, then don't rotate the CellLayouts 1961 // NOTE: If we don't update the side pages alpha, then we should not hide the side 1962 // pages. see unshrink(). 1963 if (LauncherApplication.isScreenLarge()) { 1964 translation = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1965 } 1966 1967 oldAlphas[i] = cl.getAlpha(); 1968 newAlphas[i] = finalAlphaValue; 1969 if (animated) { 1970 oldTranslationXs[i] = cl.getTranslationX(); 1971 oldTranslationYs[i] = cl.getTranslationY(); 1972 oldScaleXs[i] = cl.getScaleX(); 1973 oldScaleYs[i] = cl.getScaleY(); 1974 oldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1975 oldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1976 oldRotationYs[i] = cl.getRotationY(); 1977 1978 newTranslationXs[i] = translation; 1979 newTranslationYs[i] = 0f; 1980 newScaleXs[i] = finalScaleFactor; 1981 newScaleYs[i] = finalScaleFactor; 1982 newBackgroundAlphas[i] = finalBackgroundAlpha; 1983 newBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1984 newRotationYs[i] = rotation; 1985 } else { 1986 cl.setTranslationX(translation); 1987 cl.setTranslationY(0.0f); 1988 cl.setScaleX(finalScaleFactor); 1989 cl.setScaleY(finalScaleFactor); 1990 cl.setBackgroundAlpha(0.0f); 1991 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1992 cl.setAlpha(finalAlphaValue); 1993 cl.setRotationY(rotation); 1994 mUnshrinkAnimationListener.onAnimationEnd(null); 1995 } 1996 } 1997 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 1998 boolean isLandscape = display.getWidth() > display.getHeight(); 1999 final boolean enableWallpaperEffects = isHardwareAccelerated(); 2000 if (enableWallpaperEffects) { 2001 switch (mShrinkState) { 2002 // animating out 2003 case TOP: 2004 // customize 2005 if (animated) { 2006 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.65f : 0.62f); 2007 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.65f : 0.62f); 2008 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 2009 } 2010 break; 2011 case MIDDLE: 2012 case SPRING_LOADED: 2013 if (animated) { 2014 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.49f : 0.46f); 2015 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.49f : 0.46f); 2016 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 2017 } 2018 break; 2019 case BOTTOM_HIDDEN: 2020 case BOTTOM_VISIBLE: 2021 // all apps 2022 if (animated) { 2023 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.65f : 0.65f); 2024 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.65f : 0.65f); 2025 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 2026 } 2027 break; 2028 } 2029 } 2030 if (animated) { 2031 ValueAnimator animWithInterpolator = 2032 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 2033 animWithInterpolator.setInterpolator(mZoomInInterpolator); 2034 2035 final float oldHorizontalWallpaperOffset = enableWallpaperEffects ? 2036 getHorizontalWallpaperOffset() : 0; 2037 final float oldVerticalWallpaperOffset = enableWallpaperEffects ? 2038 getVerticalWallpaperOffset() : 0; 2039 final float newHorizontalWallpaperOffset = enableWallpaperEffects ? 2040 wallpaperOffsetForCurrentScroll() : 0; 2041 final float newVerticalWallpaperOffset = enableWallpaperEffects ? 0.5f : 0; 2042 animWithInterpolator.addUpdateListener(new LauncherAnimatorUpdateListener() { 2043 public void onAnimationUpdate(float a, float b) { 2044 if (b == 0f) { 2045 // an optimization, but not required 2046 return; 2047 } 2048 fastInvalidate(); 2049 if (enableWallpaperEffects) { 2050 setHorizontalWallpaperOffset(a * oldHorizontalWallpaperOffset 2051 + b * newHorizontalWallpaperOffset); 2052 setVerticalWallpaperOffset(a * oldVerticalWallpaperOffset 2053 + b * newVerticalWallpaperOffset); 2054 } 2055 for (int i = 0; i < screenCount; i++) { 2056 final CellLayout cl = (CellLayout) getChildAt(i); 2057 cl.fastInvalidate(); 2058 cl.setFastTranslationX( 2059 a * oldTranslationXs[i] + b * newTranslationXs[i]); 2060 cl.setFastTranslationY( 2061 a * oldTranslationYs[i] + b * newTranslationYs[i]); 2062 cl.setFastScaleX(a * oldScaleXs[i] + b * newScaleXs[i]); 2063 cl.setFastScaleY(a * oldScaleYs[i] + b * newScaleYs[i]); 2064 cl.setFastBackgroundAlpha( 2065 a * oldBackgroundAlphas[i] + b * newBackgroundAlphas[i]); 2066 cl.setBackgroundAlphaMultiplier(a * oldBackgroundAlphaMultipliers[i] + 2067 b * newBackgroundAlphaMultipliers[i]); 2068 cl.setFastAlpha(a * oldAlphas[i] + b * newAlphas[i]); 2069 } 2070 } 2071 }); 2072 2073 ValueAnimator rotationAnim = 2074 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 2075 rotationAnim.setInterpolator(new DecelerateInterpolator(2.0f)); 2076 rotationAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 2077 public void onAnimationUpdate(float a, float b) { 2078 // don't invalidate workspace because we did it above 2079 if (b == 0f) { 2080 // an optimization, but not required 2081 return; 2082 } 2083 for (int i = 0; i < screenCount; i++) { 2084 final CellLayout cl = (CellLayout) getChildAt(i); 2085 cl.setFastRotationY(a * oldRotationYs[i] + b * newRotationYs[i]); 2086 } 2087 } 2088 }); 2089 2090 mAnimator.playTogether(animWithInterpolator, rotationAnim); 2091 // If we call this when we're not animated, onAnimationEnd is never called on 2092 // the listener; make sure we only use the listener when we're actually animating 2093 mAnimator.addListener(mUnshrinkAnimationListener); 2094 mAnimator.start(); 2095 } else { 2096 if (enableWallpaperEffects) { 2097 setHorizontalWallpaperOffset(wallpaperOffsetForCurrentScroll()); 2098 setVerticalWallpaperOffset(0.5f); 2099 updateWallpaperOffsetImmediately(); 2100 } 2101 } 2102 } 2103 2104 if (!springLoaded) { 2105 hideBackgroundGradient(); 2106 } 2107 } 2108 2109 /** 2110 * Draw the View v into the given Canvas. 2111 * 2112 * @param v the view to draw 2113 * @param destCanvas the canvas to draw on 2114 * @param padding the horizontal and vertical padding to use when drawing 2115 */ 2116 private void drawDragView(View v, Canvas destCanvas, int padding) { 2117 final Rect clipRect = mTempRect; 2118 v.getDrawingRect(clipRect); 2119 2120 // For a TextView, adjust the clip rect so that we don't include the text label 2121 if (v instanceof FolderIcon) { 2122 } else if (v instanceof BubbleTextView) { 2123 final BubbleTextView tv = (BubbleTextView) v; 2124 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 2125 tv.getLayout().getLineTop(0); 2126 } else if (v instanceof TextView) { 2127 final TextView tv = (TextView) v; 2128 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 2129 tv.getLayout().getLineTop(0); 2130 } 2131 2132 // Draw the View into the bitmap. 2133 // The translate of scrollX and scrollY is necessary when drawing TextViews, because 2134 // they set scrollX and scrollY to large values to achieve centered text 2135 2136 destCanvas.save(); 2137 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 2138 destCanvas.clipRect(clipRect, Op.REPLACE); 2139 v.draw(destCanvas); 2140 destCanvas.restore(); 2141 } 2142 2143 /** 2144 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2145 * Responsibility for the bitmap is transferred to the caller. 2146 */ 2147 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 2148 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 2149 final Bitmap b = Bitmap.createBitmap( 2150 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 2151 2152 canvas.setBitmap(b); 2153 drawDragView(v, canvas, padding); 2154 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2155 return b; 2156 } 2157 2158 /** 2159 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2160 * Responsibility for the bitmap is transferred to the caller. 2161 */ 2162 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h) { 2163 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 2164 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 2165 canvas.setBitmap(b); 2166 2167 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 2168 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 2169 (h - padding) / (float) orig.getHeight()); 2170 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 2171 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 2172 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 2173 2174 // center the image 2175 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 2176 2177 Paint p = new Paint(); 2178 p.setFilterBitmap(true); 2179 canvas.drawBitmap(orig, src, dst, p); 2180 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2181 2182 return b; 2183 } 2184 2185 /** 2186 * Creates a drag outline to represent a drop (that we don't have the actual information for 2187 * yet). May be changed in the future to alter the drop outline slightly depending on the 2188 * clip description mime data. 2189 */ 2190 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 2191 Resources r = getResources(); 2192 final int outlineColor = r.getColor(R.color.drag_outline_color); 2193 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 2194 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 2195 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 2196 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 2197 final Bitmap b = Bitmap.createBitmap( 2198 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 2199 2200 canvas.setBitmap(b); 2201 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 2202 rectRadius, rectRadius, mExternalDragOutlinePaint); 2203 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2204 return b; 2205 } 2206 2207 /** 2208 * Returns a new bitmap to show when the given View is being dragged around. 2209 * Responsibility for the bitmap is transferred to the caller. 2210 */ 2211 private Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 2212 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 2213 final Bitmap b = Bitmap.createBitmap( 2214 mDragOutline.getWidth(), mDragOutline.getHeight(), Bitmap.Config.ARGB_8888); 2215 2216 canvas.setBitmap(b); 2217 canvas.drawBitmap(mDragOutline, 0, 0, null); 2218 drawDragView(v, canvas, padding); 2219 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 2220 2221 return b; 2222 } 2223 2224 void startDrag(CellLayout.CellInfo cellInfo) { 2225 View child = cellInfo.cell; 2226 2227 // Make sure the drag was started by a long press as opposed to a long click. 2228 if (!child.isInTouchMode()) { 2229 return; 2230 } 2231 2232 mDragInfo = cellInfo; 2233 2234 CellLayout current = (CellLayout) getChildAt(cellInfo.screen); 2235 current.onDragChild(child); 2236 2237 child.clearFocus(); 2238 child.setPressed(false); 2239 2240 final Canvas canvas = new Canvas(); 2241 2242 // We need to add extra padding to the bitmap to make room for the glow effect 2243 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2244 2245 // The outline is used to visualize where the item will land if dropped 2246 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 2247 2248 // The drag bitmap follows the touch point around on the screen 2249 final Bitmap b = createDragBitmap(child, canvas, bitmapPadding); 2250 2251 final int bmpWidth = b.getWidth(); 2252 final int bmpHeight = b.getHeight(); 2253 2254 child.getLocationOnScreen(mTempXY); 2255 final int screenX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 2256 final int screenY = (int) mTempXY[1] + (child.getHeight() - bmpHeight) / 2; 2257 2258 Rect dragRect = null; 2259 if ((child instanceof BubbleTextView) && !(child instanceof FolderIcon)) { 2260 int iconSize = getResources().getDimensionPixelSize(R.dimen.app_icon_size); 2261 int top = child.getPaddingTop(); 2262 int left = (bmpWidth - iconSize) / 2; 2263 int right = left + iconSize; 2264 int bottom = top + iconSize; 2265 dragRect = new Rect(left, top, right, bottom); 2266 } 2267 2268 mLauncher.lockScreenOrientation(); 2269 mDragController.startDrag(b, screenX, screenY, this, child.getTag(), 2270 DragController.DRAG_ACTION_MOVE, dragRect); 2271 b.recycle(); 2272 } 2273 2274 void addApplicationShortcut(ShortcutInfo info, int screen, int cellX, int cellY, 2275 boolean insertAtFirst, int intersectX, int intersectY) { 2276 final CellLayout cellLayout = (CellLayout) getChildAt(screen); 2277 View view = mLauncher.createShortcut(R.layout.application, cellLayout, (ShortcutInfo) info); 2278 2279 final int[] cellXY = new int[2]; 2280 cellLayout.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 2281 addInScreen(view, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 2282 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 2283 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2284 cellXY[0], cellXY[1]); 2285 } 2286 2287 private void setPositionForDropAnimation( 2288 View dragView, int dragViewX, int dragViewY, View parent, View child) { 2289 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 2290 2291 // Based on the position of the drag view, find the top left of the original view 2292 int viewX = dragViewX + (dragView.getWidth() - child.getMeasuredWidth()) / 2; 2293 int viewY = dragViewY + (dragView.getHeight() - child.getMeasuredHeight()) / 2; 2294 2295 CellLayout layout = (CellLayout) parent; 2296 2297 // Set its old pos (in the new parent's coordinates); it will be animated 2298 // in animateViewIntoPosition after the next layout pass 2299 lp.oldX = viewX - (layout.getLeft() + layout.getLeftPadding() - mScrollX); 2300 lp.oldY = viewY - (layout.getTop() + layout.getTopPadding() - mScrollY); 2301 } 2302 2303 /* 2304 * We should be careful that this method cannot result in any synchronous requestLayout() 2305 * calls, as it is called from onLayout(). 2306 */ 2307 public void animateViewIntoPosition(final View view) { 2308 final CellLayout parent = (CellLayout) view.getParent().getParent(); 2309 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2310 2311 // Convert the animation params to be relative to the Workspace, not the CellLayout 2312 final int fromX = lp.oldX + parent.getLeft() + parent.getLeftPadding(); 2313 final int fromY = lp.oldY + parent.getTop() + parent.getTopPadding(); 2314 2315 final int dx = lp.x - lp.oldX; 2316 final int dy = lp.y - lp.oldY; 2317 2318 // Calculate the duration of the animation based on the object's distance 2319 final float dist = (float) Math.sqrt(dx*dx + dy*dy); 2320 final Resources res = getResources(); 2321 final float maxDist = (float) res.getInteger(R.integer.config_dropAnimMaxDist); 2322 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration); 2323 if (dist < maxDist) { 2324 duration *= mQuintEaseOutInterpolator.getInterpolation(dist / maxDist); 2325 } 2326 2327 if (mDropAnim != null) { 2328 mDropAnim.end(); 2329 } 2330 mDropAnim = new ValueAnimator(); 2331 mDropAnim.setInterpolator(mQuintEaseOutInterpolator); 2332 2333 // The view is invisible during the animation; we render it manually. 2334 mDropAnim.addListener(new AnimatorListenerAdapter() { 2335 public void onAnimationStart(Animator animation) { 2336 // Set this here so that we don't render it until the animation begins 2337 mDropView = view; 2338 } 2339 2340 public void onAnimationEnd(Animator animation) { 2341 if (mDropView != null) { 2342 mDropView.setVisibility(View.VISIBLE); 2343 mDropView = null; 2344 } 2345 } 2346 }); 2347 2348 mDropAnim.setDuration(duration); 2349 mDropAnim.setFloatValues(0.0f, 1.0f); 2350 mDropAnim.removeAllUpdateListeners(); 2351 mDropAnim.addUpdateListener(new AnimatorUpdateListener() { 2352 public void onAnimationUpdate(ValueAnimator animation) { 2353 final float percent = (Float) animation.getAnimatedValue(); 2354 // Invalidate the old position 2355 invalidate(mDropViewPos[0], mDropViewPos[1], 2356 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 2357 2358 mDropViewPos[0] = fromX + (int) (percent * dx + 0.5f); 2359 mDropViewPos[1] = fromY + (int) (percent * dy + 0.5f); 2360 invalidate(mDropViewPos[0], mDropViewPos[1], 2361 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 2362 } 2363 }); 2364 2365 mDropAnim.start(); 2366 } 2367 2368 /** 2369 * {@inheritDoc} 2370 */ 2371 public boolean acceptDrop(DragSource source, int x, int y, 2372 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 2373 2374 // If it's an external drop (e.g. from All Apps), check if it should be accepted 2375 if (source != this) { 2376 // Don't accept the drop if we're not over a screen at time of drop 2377 if (mDragTargetLayout == null || !mDragTargetLayout.getAcceptsDrops()) { 2378 return false; 2379 } 2380 2381 final CellLayout.CellInfo dragCellInfo = mDragInfo; 2382 final int spanX = dragCellInfo == null ? 1 : dragCellInfo.spanX; 2383 final int spanY = dragCellInfo == null ? 1 : dragCellInfo.spanY; 2384 2385 final View ignoreView = dragCellInfo == null ? null : dragCellInfo.cell; 2386 2387 // Don't accept the drop if there's no room for the item 2388 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 2389 mLauncher.showOutOfSpaceMessage(); 2390 return false; 2391 } 2392 } 2393 return true; 2394 } 2395 2396 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int originX, int originY) { 2397 mTargetCell = findNearestArea(originX, originY, 2398 1, 1, target, 2399 mTargetCell); 2400 2401 View v = target.getChildAt(mTargetCell[0], mTargetCell[1]); 2402 boolean hasntMoved = mDragInfo != null && (mDragInfo.cellX == mTargetCell[0] && 2403 mDragInfo.cellY == mTargetCell[1]); 2404 2405 if (v == null || hasntMoved) return false; 2406 2407 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2408 boolean willBecomeShortcut = 2409 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2410 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2411 2412 return (aboveShortcut && willBecomeShortcut); 2413 } 2414 2415 boolean createUserFolderIfNecessary(View newView, CellLayout target, int originX, 2416 int originY, boolean external) { 2417 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2418 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2419 2420 // First we find the cell nearest to point at which the item is dropped, without 2421 // any consideration to whether there is an item there. 2422 mTargetCell = findNearestArea(originX, originY, 2423 spanX, spanY, target, 2424 mTargetCell); 2425 2426 View v = target.getChildAt(mTargetCell[0], mTargetCell[1]); 2427 boolean hasntMoved = mDragInfo != null && (mDragInfo.cellX == mTargetCell[0] && 2428 mDragInfo.cellY == mTargetCell[1]); 2429 2430 if (v == null || hasntMoved) return false; 2431 2432 final int screen = (mTargetCell == null) ? 2433 mDragInfo.screen : indexOfChild(target); 2434 2435 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2436 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2437 2438 if (aboveShortcut && willBecomeShortcut) { 2439 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2440 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2441 // if the drag started here, we need to remove it from the workspace 2442 if (!external) { 2443 int fromScreen = mDragInfo.screen; 2444 CellLayout sourceLayout = (CellLayout) getChildAt(fromScreen); 2445 sourceLayout.removeView(newView); 2446 } 2447 2448 target.removeView(v); 2449 FolderIcon fi = mLauncher.addFolder(screen, mTargetCell[0], mTargetCell[1]); 2450 destInfo.cellX = -1; 2451 destInfo.cellY = -1; 2452 sourceInfo.cellX = -1; 2453 sourceInfo.cellY = -1; 2454 fi.addItem(destInfo); 2455 fi.addItem(sourceInfo); 2456 return true; 2457 } 2458 return false; 2459 } 2460 2461 public void onDrop(DragSource source, int x, int y, int xOffset, int yOffset, 2462 DragView dragView, Object dragInfo) { 2463 2464 mDragViewVisualCenter = getDragViewVisualCenter(x, y, xOffset, yOffset, dragView, 2465 mDragViewVisualCenter); 2466 2467 // We want the point to be mapped to the dragTarget. 2468 if (mDragTargetLayout != null) { 2469 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2470 } 2471 2472 // When you are in customization mode and drag to a particular screen, make that the 2473 // new current/default screen, so any subsequent taps add items to that screen 2474 if (!mLauncher.isAllAppsVisible()) { 2475 int dragTargetIndex = indexOfChild(mDragTargetLayout); 2476 if (mCurrentPage != dragTargetIndex && (mIsSmall || mIsInUnshrinkAnimation)) { 2477 scrollToNewPageWithoutMovingPages(dragTargetIndex); 2478 } 2479 } 2480 2481 if (source != this) { 2482 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2483 (int) mDragViewVisualCenter[1] }; 2484 if (LauncherApplication.isScreenLarge() && (mIsSmall || mIsInUnshrinkAnimation) 2485 && !mLauncher.isAllAppsVisible()) { 2486 // When the workspace is shrunk and the drop comes from customize, don't actually 2487 // add the item to the screen -- customize will do this itself 2488 ((ItemInfo) dragInfo).dropPos = touchXY; 2489 return; 2490 } 2491 onDropExternal(touchXY, dragInfo, mDragTargetLayout, false, dragView); 2492 } else if (mDragInfo != null) { 2493 final View cell = mDragInfo.cell; 2494 CellLayout dropTargetLayout = mDragTargetLayout; 2495 boolean dropInscrollArea = false; 2496 2497 // Handle the case where the user drops when in the scroll area. 2498 // This is treated as a drop on the adjacent page. 2499 if (dropTargetLayout == null && mInScrollArea) { 2500 dropInscrollArea = true; 2501 if (mPendingScrollDirection == DragController.SCROLL_LEFT) { 2502 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage - 1); 2503 } else if (mPendingScrollDirection == DragController.SCROLL_RIGHT) { 2504 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage + 1); 2505 } 2506 } 2507 2508 if (dropTargetLayout != null) { 2509 // Move internally 2510 final int screen = (mTargetCell == null) ? 2511 mDragInfo.screen : indexOfChild(dropTargetLayout); 2512 2513 // If the item being dropped is a shortcut and the nearest drop cell also contains 2514 // a shortcut, then create a folder with the two shortcuts. 2515 if (!dropInscrollArea && createUserFolderIfNecessary(cell, dropTargetLayout, 2516 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], false)) { 2517 return; 2518 } 2519 2520 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2521 // we need to find the nearest cell location that is vacant 2522 mTargetCell = findNearestVacantArea((int) mDragViewVisualCenter[0], 2523 (int) mDragViewVisualCenter[1], mDragInfo.spanX, mDragInfo.spanY, cell, 2524 dropTargetLayout, mTargetCell); 2525 2526 if (screen != mCurrentPage) { 2527 snapToPage(screen); 2528 } 2529 2530 if (mTargetCell != null) { 2531 if (screen != mDragInfo.screen) { 2532 // Reparent the view 2533 ((CellLayout) getChildAt(mDragInfo.screen)).removeView(cell); 2534 addInScreen(cell, screen, mTargetCell[0], mTargetCell[1], 2535 mDragInfo.spanX, mDragInfo.spanY); 2536 } 2537 2538 // update the item's position after drop 2539 final ItemInfo info = (ItemInfo) cell.getTag(); 2540 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2541 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 2542 lp.cellX = mTargetCell[0]; 2543 lp.cellY = mTargetCell[1]; 2544 cell.setId(LauncherModel.getCellLayoutChildId(-1, mDragInfo.screen, 2545 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2546 2547 if (cell instanceof LauncherAppWidgetHostView) { 2548 final CellLayout cellLayout = dropTargetLayout; 2549 // We post this call so that the widget has a chance to be placed 2550 // in its final location 2551 2552 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2553 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2554 if (pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2555 final Runnable resizeRunnable = new Runnable() { 2556 public void run() { 2557 DragLayer dragLayer = (DragLayer) 2558 mLauncher.findViewById(R.id.drag_layer); 2559 dragLayer.addResizeFrame(info, hostView, 2560 cellLayout); 2561 } 2562 }; 2563 post(new Runnable() { 2564 public void run() { 2565 if (!isPageMoving()) { 2566 resizeRunnable.run(); 2567 } else { 2568 mDelayedResizeRunnable = resizeRunnable; 2569 } 2570 } 2571 }); 2572 } 2573 } 2574 2575 LauncherModel.moveItemInDatabase(mLauncher, info, 2576 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2577 lp.cellX, lp.cellY); 2578 } 2579 } 2580 2581 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2582 2583 int loc[] = new int[2]; 2584 getViewLocationRelativeToSelf(dragView, loc); 2585 2586 // Prepare it to be animated into its new position 2587 // This must be called after the view has been re-parented 2588 setPositionForDropAnimation(dragView, loc[0], loc[1], parent, cell); 2589 boolean animateDrop = !mWasSpringLoadedOnDragExit; 2590 parent.onDropChild(cell, animateDrop); 2591 } 2592 } 2593 2594 private void getViewLocationRelativeToSelf(View v, int[] location) { 2595 getLocationOnScreen(location); 2596 int x = location[0]; 2597 int y = location[1]; 2598 2599 v.getLocationOnScreen(location); 2600 int vX = location[0]; 2601 int vY = location[1]; 2602 2603 location[0] = vX - x; 2604 location[1] = vY - y; 2605 } 2606 2607 public void onDragEnter(DragSource source, int x, int y, int xOffset, 2608 int yOffset, DragView dragView, Object dragInfo) { 2609 mDragTargetLayout = null; // Reset the drag state 2610 2611 if (!mIsSmall) { 2612 mDragTargetLayout = getCurrentDropLayout(); 2613 mDragTargetLayout.onDragEnter(); 2614 showOutlines(); 2615 } 2616 } 2617 2618 public DropTarget getDropTargetDelegate(DragSource source, int x, int y, 2619 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 2620 2621 if (mIsSmall || mIsInUnshrinkAnimation) { 2622 // If we're shrunken, don't let anyone drag on folders/etc that are on the mini-screens 2623 return null; 2624 } 2625 // We may need to delegate the drag to a child view. If a 1x1 item 2626 // would land in a cell occupied by a DragTarget (e.g. a Folder), 2627 // then drag events should be handled by that child. 2628 2629 ItemInfo item = (ItemInfo) dragInfo; 2630 CellLayout currentLayout = getCurrentDropLayout(); 2631 2632 int dragPointX, dragPointY; 2633 if (item.spanX == 1 && item.spanY == 1) { 2634 // For a 1x1, calculate the drop cell exactly as in onDragOver 2635 dragPointX = x - xOffset; 2636 dragPointY = y - yOffset; 2637 } else { 2638 // Otherwise, use the exact drag coordinates 2639 dragPointX = x; 2640 dragPointY = y; 2641 } 2642 dragPointX += mScrollX - currentLayout.getLeft(); 2643 dragPointY += mScrollY - currentLayout.getTop(); 2644 2645 // If we are dragging over a cell that contains a DropTarget that will 2646 // accept the drop, delegate to that DropTarget. 2647 final int[] cellXY = mTempCell; 2648 currentLayout.estimateDropCell(dragPointX, dragPointY, item.spanX, item.spanY, cellXY); 2649 View child = currentLayout.getChildAt(cellXY[0], cellXY[1]); 2650 if (child instanceof DropTarget) { 2651 DropTarget target = (DropTarget)child; 2652 if (target.acceptDrop(source, x, y, xOffset, yOffset, dragView, dragInfo)) { 2653 return target; 2654 } 2655 } 2656 return null; 2657 } 2658 2659 /** 2660 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 2661 * in the returned structure related to the widgets that match the drop (or a null list if it is 2662 * a shortcut drop). If the drop is not accepted then a null structure is returned. 2663 */ 2664 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 2665 final LauncherModel model = mLauncher.getModel(); 2666 final ClipDescription desc = event.getClipDescription(); 2667 final int mimeTypeCount = desc.getMimeTypeCount(); 2668 for (int i = 0; i < mimeTypeCount; ++i) { 2669 final String mimeType = desc.getMimeType(i); 2670 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 2671 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 2672 } else { 2673 final List<WidgetMimeTypeHandlerData> widgets = 2674 model.resolveWidgetsForMimeType(mContext, mimeType); 2675 if (widgets.size() > 0) { 2676 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 2677 } 2678 } 2679 } 2680 return null; 2681 } 2682 2683 /** 2684 * Global drag and drop handler 2685 */ 2686 @Override 2687 public boolean onDragEvent(DragEvent event) { 2688 final ClipDescription desc = event.getClipDescription(); 2689 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 2690 final int[] pos = new int[2]; 2691 layout.getLocationOnScreen(pos); 2692 // We need to offset the drag coordinates to layout coordinate space 2693 final int x = (int) event.getX() - pos[0]; 2694 final int y = (int) event.getY() - pos[1]; 2695 2696 switch (event.getAction()) { 2697 case DragEvent.ACTION_DRAG_STARTED: { 2698 // Validate this drag 2699 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2700 if (test != null) { 2701 boolean isShortcut = (test.second == null); 2702 if (isShortcut) { 2703 // Check if we have enough space on this screen to add a new shortcut 2704 if (!layout.findCellForSpan(pos, 1, 1)) { 2705 Toast.makeText(mContext, mContext.getString(R.string.out_of_space), 2706 Toast.LENGTH_SHORT).show(); 2707 return false; 2708 } 2709 } 2710 } else { 2711 // Show error message if we couldn't accept any of the items 2712 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 2713 Toast.LENGTH_SHORT).show(); 2714 return false; 2715 } 2716 2717 // Create the drag outline 2718 // We need to add extra padding to the bitmap to make room for the glow effect 2719 final Canvas canvas = new Canvas(); 2720 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2721 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 2722 2723 // Show the current page outlines to indicate that we can accept this drop 2724 showOutlines(); 2725 layout.setIsDragOccuring(true); 2726 layout.onDragEnter(); 2727 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2728 2729 return true; 2730 } 2731 case DragEvent.ACTION_DRAG_LOCATION: 2732 // Visualize the drop location 2733 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2734 return true; 2735 case DragEvent.ACTION_DROP: { 2736 // Try and add any shortcuts 2737 final LauncherModel model = mLauncher.getModel(); 2738 final ClipData data = event.getClipData(); 2739 2740 // We assume that the mime types are ordered in descending importance of 2741 // representation. So we enumerate the list of mime types and alert the 2742 // user if any widgets can handle the drop. Only the most preferred 2743 // representation will be handled. 2744 pos[0] = x; 2745 pos[1] = y; 2746 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2747 if (test != null) { 2748 final int index = test.first; 2749 final List<WidgetMimeTypeHandlerData> widgets = test.second; 2750 final boolean isShortcut = (widgets == null); 2751 final String mimeType = desc.getMimeType(index); 2752 if (isShortcut) { 2753 final Intent intent = data.getItemAt(index).getIntent(); 2754 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 2755 onDropExternal(new int[] { x, y }, info, layout, false); 2756 } else { 2757 if (widgets.size() == 1) { 2758 // If there is only one item, then go ahead and add and configure 2759 // that widget 2760 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 2761 final PendingAddWidgetInfo createInfo = 2762 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 2763 mLauncher.addAppWidgetFromDrop(createInfo, mCurrentPage, pos); 2764 } else { 2765 // Show the widget picker dialog if there is more than one widget 2766 // that can handle this data type 2767 final InstallWidgetReceiver.WidgetListAdapter adapter = 2768 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 2769 data, widgets, layout, mCurrentPage, pos); 2770 final AlertDialog.Builder builder = 2771 new AlertDialog.Builder(mContext); 2772 builder.setAdapter(adapter, adapter); 2773 builder.setCancelable(true); 2774 builder.setTitle(mContext.getString( 2775 R.string.external_drop_widget_pick_title)); 2776 builder.setIcon(R.drawable.ic_no_applications); 2777 builder.show(); 2778 } 2779 } 2780 } 2781 return true; 2782 } 2783 case DragEvent.ACTION_DRAG_ENDED: 2784 // Hide the page outlines after the drop 2785 layout.setIsDragOccuring(false); 2786 layout.onDragExit(); 2787 hideOutlines(); 2788 return true; 2789 } 2790 return super.onDragEvent(event); 2791 } 2792 2793 /* 2794 * 2795 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2796 * coordinate space. The argument xy is modified with the return result. 2797 * 2798 */ 2799 void mapPointFromSelfToChild(View v, float[] xy) { 2800 mapPointFromSelfToChild(v, xy, null); 2801 } 2802 2803 /* 2804 * 2805 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2806 * coordinate space. The argument xy is modified with the return result. 2807 * 2808 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2809 * computing it itself; we use this to avoid redundant matrix inversions in 2810 * findMatchingPageForDragOver 2811 * 2812 */ 2813 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2814 if (cachedInverseMatrix == null) { 2815 v.getMatrix().invert(mTempInverseMatrix); 2816 cachedInverseMatrix = mTempInverseMatrix; 2817 } 2818 xy[0] = xy[0] + mScrollX - v.getLeft(); 2819 xy[1] = xy[1] + mScrollY - v.getTop(); 2820 cachedInverseMatrix.mapPoints(xy); 2821 } 2822 2823 /* 2824 * 2825 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2826 * the parent View's coordinate space. The argument xy is modified with the return result. 2827 * 2828 */ 2829 void mapPointFromChildToSelf(View v, float[] xy) { 2830 v.getMatrix().mapPoints(xy); 2831 xy[0] -= (mScrollX - v.getLeft()); 2832 xy[1] -= (mScrollY - v.getTop()); 2833 } 2834 2835 static private float squaredDistance(float[] point1, float[] point2) { 2836 float distanceX = point1[0] - point2[0]; 2837 float distanceY = point2[1] - point2[1]; 2838 return distanceX * distanceX + distanceY * distanceY; 2839 } 2840 2841 /* 2842 * 2843 * Returns true if the passed CellLayout cl overlaps with dragView 2844 * 2845 */ 2846 boolean overlaps(CellLayout cl, DragView dragView, 2847 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2848 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2849 final float[] draggedItemTopLeft = mTempDragCoordinates; 2850 draggedItemTopLeft[0] = dragViewX; 2851 draggedItemTopLeft[1] = dragViewY; 2852 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2853 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2854 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2855 2856 // Transform the dragged item's top left coordinates 2857 // to the CellLayout's local coordinates 2858 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2859 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2860 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2861 2862 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2863 // Transform the dragged item's bottom right coordinates 2864 // to the CellLayout's local coordinates 2865 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2866 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2867 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2868 2869 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2870 float overlap = (overlapRegionRight - overlapRegionLeft) * 2871 (overlapRegionBottom - overlapRegionTop); 2872 if (overlap > 0) { 2873 return true; 2874 } 2875 } 2876 } 2877 return false; 2878 } 2879 2880 /* 2881 * 2882 * This method returns the CellLayout that is currently being dragged to. In order to drag 2883 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2884 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2885 * 2886 * Return null if no CellLayout is currently being dragged over 2887 * 2888 */ 2889 private CellLayout findMatchingPageForDragOver( 2890 DragView dragView, int originX, int originY, int offsetX, int offsetY) { 2891 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2892 // with the item being dragged and then choose the one that's closest to the touch point 2893 final int screenCount = getChildCount(); 2894 CellLayout bestMatchingScreen = null; 2895 float smallestDistSoFar = Float.MAX_VALUE; 2896 2897 for (int i = 0; i < screenCount; i++) { 2898 CellLayout cl = (CellLayout)getChildAt(i); 2899 2900 final float[] touchXy = mTempTouchCoordinates; 2901 touchXy[0] = originX + offsetX; 2902 touchXy[1] = originY + offsetY; 2903 2904 // Transform the touch coordinates to the CellLayout's local coordinates 2905 // If the touch point is within the bounds of the cell layout, we can return immediately 2906 cl.getMatrix().invert(mTempInverseMatrix); 2907 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2908 2909 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2910 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2911 return cl; 2912 } 2913 2914 if (overlaps(cl, dragView, originX, originY, mTempInverseMatrix)) { 2915 // Get the center of the cell layout in screen coordinates 2916 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2917 cellLayoutCenter[0] = cl.getWidth()/2; 2918 cellLayoutCenter[1] = cl.getHeight()/2; 2919 mapPointFromChildToSelf(cl, cellLayoutCenter); 2920 2921 touchXy[0] = originX + offsetX; 2922 touchXy[1] = originY + offsetY; 2923 2924 // Calculate the distance between the center of the CellLayout 2925 // and the touch point 2926 float dist = squaredDistance(touchXy, cellLayoutCenter); 2927 2928 if (dist < smallestDistSoFar) { 2929 smallestDistSoFar = dist; 2930 bestMatchingScreen = cl; 2931 } 2932 } 2933 } 2934 return bestMatchingScreen; 2935 } 2936 2937 // This is used to compute the visual center of the dragView. This point is then 2938 // used to visualize drop locations and determine where to drop an item. The idea is that 2939 // the visual center represents the user's interpretation of where the item is, and hence 2940 // is the appropriate point to use when determining drop location. 2941 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2942 DragView dragView, float[] recycle) { 2943 float res[]; 2944 if (recycle == null) { 2945 res = new float[2]; 2946 } else { 2947 res = recycle; 2948 } 2949 2950 // First off, the drag view has been shifted in a way that is not represented in the 2951 // x and y values or the x/yOffsets. Here we account for that shift. 2952 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2953 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2954 2955 // These represent the visual top and left of drag view if a dragRect was provided. 2956 // If a dragRect was not provided, then they correspond to the actual view left and 2957 // top, as the dragRect is in that case taken to be the entire dragView. 2958 // R.dimen.dragViewOffsetY. 2959 int left = x - xOffset; 2960 int top = y - yOffset; 2961 2962 // In order to find the visual center, we shift by half the dragRect 2963 res[0] = left + dragView.getDragRegion().width() / 2; 2964 res[1] = top + dragView.getDragRegion().height() / 2; 2965 2966 return res; 2967 } 2968 2969 public void onDragOver(DragSource source, int x, int y, int xOffset, int yOffset, 2970 DragView dragView, Object dragInfo) { 2971 // When touch is inside the scroll area, skip dragOver actions for the current screen 2972 if (!mInScrollArea) { 2973 CellLayout layout; 2974 int left = x - xOffset; 2975 int top = y - yOffset; 2976 2977 mDragViewVisualCenter = getDragViewVisualCenter(x, y, xOffset, yOffset, dragView, 2978 mDragViewVisualCenter); 2979 2980 boolean shrunken = mIsSmall || mIsInUnshrinkAnimation; 2981 if (shrunken) { 2982 mLastDragView = dragView; 2983 mLastDragOriginX = left; 2984 mLastDragOriginY = top; 2985 mLastDragXOffset = xOffset; 2986 mLastDragYOffset = yOffset; 2987 layout = findMatchingPageForDragOver(dragView, left, top, xOffset, yOffset); 2988 2989 if (layout != null && layout != mDragTargetLayout) { 2990 if (mDragTargetLayout != null) { 2991 mDragTargetLayout.setIsDragOverlapping(false); 2992 mSpringLoadedDragController.onDragExit(); 2993 } 2994 mDragTargetLayout = layout; 2995 2996 // Workaround the fact that we don't actually want spring-loaded mode in phone 2997 // UI yet. 2998 if (LauncherApplication.isScreenLarge()) { 2999 // In spring-loaded mode, we still want the user to be able to hover over a 3000 // full screen (which is traditionally set to not accept drops) if they want 3001 // to get to pages beyond the screen that is full. 3002 boolean allowDragOver = (mDragTargetLayout != null) && 3003 (mDragTargetLayout.getAcceptsDrops() || 3004 (mShrinkState == ShrinkState.SPRING_LOADED)); 3005 if (allowDragOver) { 3006 mDragTargetLayout.setIsDragOverlapping(true); 3007 mSpringLoadedDragController.onDragEnter( 3008 mDragTargetLayout, mShrinkState == ShrinkState.SPRING_LOADED); 3009 } 3010 } 3011 } 3012 } else { 3013 layout = getCurrentDropLayout(); 3014 if (layout != mDragTargetLayout) { 3015 if (mDragTargetLayout != null) { 3016 mDragTargetLayout.onDragExit(); 3017 } 3018 layout.onDragEnter(); 3019 mDragTargetLayout = layout; 3020 } 3021 } 3022 if (!shrunken || mShrinkState == ShrinkState.SPRING_LOADED) { 3023 layout = getCurrentDropLayout(); 3024 3025 final ItemInfo item = (ItemInfo)dragInfo; 3026 if (dragInfo instanceof LauncherAppWidgetInfo) { 3027 LauncherAppWidgetInfo widgetInfo = (LauncherAppWidgetInfo)dragInfo; 3028 3029 if (widgetInfo.spanX == -1) { 3030 // Calculate the grid spans needed to fit this widget 3031 int[] spans = layout.rectToCell( 3032 widgetInfo.minWidth, widgetInfo.minHeight, null); 3033 item.spanX = spans[0]; 3034 item.spanY = spans[1]; 3035 } 3036 } 3037 3038 if (mDragTargetLayout != null) { 3039 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 3040 // We want the point to be mapped to the dragTarget. 3041 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 3042 ItemInfo info = (ItemInfo) dragInfo; 3043 3044 if (!willCreateUserFolder(info, mDragTargetLayout, 3045 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1])) { 3046 mIsDraggingOverIcon = false; 3047 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 3048 (int) mDragViewVisualCenter[0], 3049 (int) mDragViewVisualCenter[1], 3050 item.spanX, item.spanY); 3051 } else if (!mIsDraggingOverIcon) { 3052 mIsDraggingOverIcon = true; 3053 mDragTargetLayout.clearDragOutlines(); 3054 } 3055 } 3056 } 3057 } 3058 } 3059 3060 private void doDragExit() { 3061 mWasSpringLoadedOnDragExit = mShrinkState == ShrinkState.SPRING_LOADED; 3062 if (mDragTargetLayout != null) { 3063 mDragTargetLayout.onDragExit(); 3064 } 3065 if (!mIsPageMoving) { 3066 hideOutlines(); 3067 } 3068 if (mShrinkState == ShrinkState.SPRING_LOADED) { 3069 mLauncher.exitSpringLoadedDragMode(); 3070 } 3071 clearAllHovers(); 3072 } 3073 3074 public void onDragExit(DragSource source, int x, int y, int xOffset, 3075 int yOffset, DragView dragView, Object dragInfo) { 3076 doDragExit(); 3077 } 3078 3079 @Override 3080 public void getHitRect(Rect outRect) { 3081 // We want the workspace to have the whole area of the display (it will find the correct 3082 // cell layout to drop to in the existing drag/drop logic. 3083 final Display d = mLauncher.getWindowManager().getDefaultDisplay(); 3084 outRect.set(0, 0, d.getWidth(), d.getHeight()); 3085 } 3086 3087 /** 3088 * Add the item specified by dragInfo to the given layout. 3089 * @return true if successful 3090 */ 3091 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 3092 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 3093 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 3094 return true; 3095 } 3096 mLauncher.showOutOfSpaceMessage(); 3097 return false; 3098 } 3099 3100 private void onDropExternal(int[] touchXY, Object dragInfo, 3101 CellLayout cellLayout, boolean insertAtFirst) { 3102 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 3103 } 3104 3105 /** 3106 * Drop an item that didn't originate on one of the workspace screens. 3107 * It may have come from Launcher (e.g. from all apps or customize), or it may have 3108 * come from another app altogether. 3109 * 3110 * NOTE: This can also be called when we are outside of a drag event, when we want 3111 * to add an item to one of the workspace screens. 3112 */ 3113 private void onDropExternal(int[] touchXY, Object dragInfo, 3114 CellLayout cellLayout, boolean insertAtFirst, DragView dragView) { 3115 int screen = indexOfChild(cellLayout); 3116 if (dragInfo instanceof PendingAddItemInfo) { 3117 PendingAddItemInfo info = (PendingAddItemInfo) dragInfo; 3118 // When dragging and dropping from customization tray, we deal with creating 3119 // widgets/shortcuts/folders in a slightly different way 3120 switch (info.itemType) { 3121 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 3122 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) info, screen, touchXY); 3123 break; 3124 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3125 mLauncher.processShortcutFromDrop(info.componentName, screen, touchXY); 3126 break; 3127 default: 3128 throw new IllegalStateException("Unknown item type: " + info.itemType); 3129 } 3130 cellLayout.onDragExit(); 3131 } else { 3132 // This is for other drag/drop cases, like dragging from All Apps 3133 ItemInfo info = (ItemInfo) dragInfo; 3134 View view = null; 3135 3136 switch (info.itemType) { 3137 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 3138 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3139 if (info.container == NO_ID && info instanceof ApplicationInfo) { 3140 // Came from all apps -- make a copy 3141 info = new ShortcutInfo((ApplicationInfo) info); 3142 } 3143 view = mLauncher.createShortcut(R.layout.application, cellLayout, 3144 (ShortcutInfo) info); 3145 break; 3146 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 3147 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, 3148 cellLayout, (FolderInfo) info, mIconCache); 3149 break; 3150 default: 3151 throw new IllegalStateException("Unknown item type: " + info.itemType); 3152 } 3153 3154 // If the item being dropped is a shortcut and the nearest drop cell also contains 3155 // a shortcut, then create a folder with the two shortcuts. 3156 if (touchXY != null && createUserFolderIfNecessary(view, cellLayout, touchXY[0], 3157 touchXY[1], true)) { 3158 return; 3159 } 3160 3161 mTargetCell = new int[2]; 3162 if (touchXY != null) { 3163 // when dragging and dropping, just find the closest free spot 3164 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], 1, 1, null, cellLayout, 3165 mTargetCell); 3166 } else { 3167 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3168 } 3169 addInScreen(view, indexOfChild(cellLayout), mTargetCell[0], 3170 mTargetCell[1], info.spanX, info.spanY, insertAtFirst); 3171 boolean animateDrop = !mWasSpringLoadedOnDragExit; 3172 cellLayout.onDropChild(view, animateDrop); 3173 cellLayout.animateDrop(); 3174 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 3175 cellLayout.getChildrenLayout().measureChild(view); 3176 3177 if (dragView != null) { 3178 // we have the visual center of the drag view, we need to find the actual 3179 // left and top of the dragView. 3180 int loc[] = new int[2]; 3181 getViewLocationRelativeToSelf(dragView, loc); 3182 setPositionForDropAnimation(dragView, loc[0], loc[1], cellLayout, view); 3183 } 3184 3185 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 3186 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 3187 lp.cellX, lp.cellY); 3188 } 3189 } 3190 3191 /** 3192 * Return the current {@link CellLayout}, correctly picking the destination 3193 * screen while a scroll is in progress. 3194 */ 3195 public CellLayout getCurrentDropLayout() { 3196 return (CellLayout) getChildAt(mNextPage == INVALID_PAGE ? mCurrentPage : mNextPage); 3197 } 3198 3199 /** 3200 * Return the current CellInfo describing our current drag; this method exists 3201 * so that Launcher can sync this object with the correct info when the activity is created/ 3202 * destroyed 3203 * 3204 */ 3205 public CellLayout.CellInfo getDragInfo() { 3206 return mDragInfo; 3207 } 3208 3209 /** 3210 * Calculate the nearest cell where the given object would be dropped. 3211 * 3212 * pixelX and pixelY should be in the coordinate system of layout 3213 */ 3214 private int[] findNearestVacantArea(int pixelX, int pixelY, 3215 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 3216 return layout.findNearestVacantArea( 3217 pixelX, pixelY, spanX, spanY, ignoreView, recycle); 3218 } 3219 3220 /** 3221 * Calculate the nearest cell where the given object would be dropped. 3222 * 3223 * pixelX and pixelY should be in the coordinate system of layout 3224 */ 3225 private int[] findNearestArea(int pixelX, int pixelY, 3226 int spanX, int spanY, CellLayout layout, int[] recycle) { 3227 return layout.findNearestArea( 3228 pixelX, pixelY, spanX, spanY, recycle); 3229 } 3230 3231 void setLauncher(Launcher launcher) { 3232 mLauncher = launcher; 3233 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3234 3235 mCustomizationDrawer = mLauncher.findViewById(R.id.customization_drawer); 3236 if (mCustomizationDrawer != null) { 3237 mCustomizationDrawerContent = 3238 mCustomizationDrawer.findViewById(com.android.internal.R.id.tabcontent); 3239 } 3240 } 3241 3242 public void setDragController(DragController dragController) { 3243 mDragController = dragController; 3244 } 3245 3246 /** 3247 * Called at the end of a drag which originated on the workspace. 3248 */ 3249 public void onDropCompleted(View target, Object dragInfo, boolean success) { 3250 if (success) { 3251 if (target != this && mDragInfo != null) { 3252 final CellLayout cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3253 cellLayout.removeView(mDragInfo.cell); 3254 if (mDragInfo.cell instanceof DropTarget) { 3255 mDragController.removeDropTarget((DropTarget)mDragInfo.cell); 3256 } 3257 // final Object tag = mDragInfo.cell.getTag(); 3258 } 3259 } else if (mDragInfo != null) { 3260 // NOTE: When 'success' is true, onDragExit is called by the DragController before 3261 // calling onDropCompleted(). We call it ourselves here, but maybe this should be 3262 // moved into DragController.cancelDrag(). 3263 doDragExit(); 3264 ((CellLayout) getChildAt(mDragInfo.screen)).onDropChild(mDragInfo.cell, false); 3265 } 3266 mLauncher.unlockScreenOrientation(); 3267 mDragOutline = null; 3268 mDragInfo = null; 3269 } 3270 3271 @Override 3272 public void onDragViewVisible() { 3273 ((View) mDragInfo.cell).setVisibility(View.GONE); 3274 } 3275 3276 public boolean isDropEnabled() { 3277 return true; 3278 } 3279 3280 @Override 3281 protected void onRestoreInstanceState(Parcelable state) { 3282 super.onRestoreInstanceState(state); 3283 Launcher.setScreen(mCurrentPage); 3284 } 3285 3286 @Override 3287 public void scrollLeft() { 3288 if (!mIsSmall && !mIsInUnshrinkAnimation) { 3289 super.scrollLeft(); 3290 } 3291 } 3292 3293 @Override 3294 public void scrollRight() { 3295 if (!mIsSmall && !mIsInUnshrinkAnimation) { 3296 super.scrollRight(); 3297 } 3298 } 3299 3300 @Override 3301 public void onEnterScrollArea(int direction) { 3302 if (!mIsSmall && !mIsInUnshrinkAnimation) { 3303 mInScrollArea = true; 3304 mPendingScrollDirection = direction; 3305 3306 final int page = mCurrentPage + (direction == DragController.SCROLL_LEFT ? -1 : 1); 3307 final CellLayout layout = (CellLayout) getChildAt(page); 3308 3309 if (layout != null) { 3310 layout.setIsDragOverlapping(true); 3311 3312 if (mDragTargetLayout != null) { 3313 mDragTargetLayout.onDragExit(); 3314 mDragTargetLayout = null; 3315 } 3316 // In portrait, need to redraw the edge glow when entering the scroll area 3317 if (getHeight() > getWidth()) { 3318 invalidate(); 3319 } 3320 } 3321 } 3322 } 3323 3324 private void clearAllHovers() { 3325 final int childCount = getChildCount(); 3326 for (int i = 0; i < childCount; i++) { 3327 ((CellLayout) getChildAt(i)).setIsDragOverlapping(false); 3328 } 3329 mSpringLoadedDragController.onDragExit(); 3330 3331 // In portrait, workspace is responsible for drawing the edge glow on adjacent pages, 3332 // so we need to redraw the workspace when this may have changed. 3333 if (getHeight() > getWidth()) { 3334 invalidate(); 3335 } 3336 } 3337 3338 @Override 3339 public void onExitScrollArea() { 3340 if (mInScrollArea) { 3341 mInScrollArea = false; 3342 mPendingScrollDirection = DragController.SCROLL_NONE; 3343 clearAllHovers(); 3344 } 3345 } 3346 3347 public Folder getFolderForTag(Object tag) { 3348 final int screenCount = getChildCount(); 3349 for (int screen = 0; screen < screenCount; screen++) { 3350 ViewGroup currentScreen = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 3351 int count = currentScreen.getChildCount(); 3352 for (int i = 0; i < count; i++) { 3353 View child = currentScreen.getChildAt(i); 3354 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 3355 if (lp.cellHSpan == 4 && lp.cellVSpan == 4 && child instanceof Folder) { 3356 Folder f = (Folder) child; 3357 if (f.getInfo() == tag && f.getInfo().opened) { 3358 return f; 3359 } 3360 } 3361 } 3362 } 3363 return null; 3364 } 3365 3366 public View getViewForTag(Object tag) { 3367 int screenCount = getChildCount(); 3368 for (int screen = 0; screen < screenCount; screen++) { 3369 ViewGroup currentScreen = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 3370 int count = currentScreen.getChildCount(); 3371 for (int i = 0; i < count; i++) { 3372 View child = currentScreen.getChildAt(i); 3373 if (child.getTag() == tag) { 3374 return child; 3375 } 3376 } 3377 } 3378 return null; 3379 } 3380 3381 void clearDropTargets() { 3382 final int screenCount = getChildCount(); 3383 3384 for (int i = 0; i < screenCount; i++) { 3385 final CellLayout layoutParent = (CellLayout) getChildAt(i); 3386 final ViewGroup layout = layoutParent.getChildrenLayout(); 3387 int childCount = layout.getChildCount(); 3388 for (int j = 0; j < childCount; j++) { 3389 View v = layout.getChildAt(j); 3390 if (v instanceof DropTarget) { 3391 mDragController.removeDropTarget((DropTarget) v); 3392 } 3393 } 3394 } 3395 } 3396 3397 void removeItems(final ArrayList<ApplicationInfo> apps) { 3398 final int screenCount = getChildCount(); 3399 final PackageManager manager = getContext().getPackageManager(); 3400 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3401 3402 final HashSet<String> packageNames = new HashSet<String>(); 3403 final int appCount = apps.size(); 3404 for (int i = 0; i < appCount; i++) { 3405 packageNames.add(apps.get(i).componentName.getPackageName()); 3406 } 3407 3408 for (int i = 0; i < screenCount; i++) { 3409 final CellLayout layoutParent = (CellLayout) getChildAt(i); 3410 final ViewGroup layout = layoutParent.getChildrenLayout(); 3411 3412 // Avoid ANRs by treating each screen separately 3413 post(new Runnable() { 3414 public void run() { 3415 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3416 childrenToRemove.clear(); 3417 3418 int childCount = layout.getChildCount(); 3419 for (int j = 0; j < childCount; j++) { 3420 final View view = layout.getChildAt(j); 3421 Object tag = view.getTag(); 3422 3423 if (tag instanceof ShortcutInfo) { 3424 final ShortcutInfo info = (ShortcutInfo) tag; 3425 final Intent intent = info.intent; 3426 final ComponentName name = intent.getComponent(); 3427 3428 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3429 for (String packageName: packageNames) { 3430 if (packageName.equals(name.getPackageName())) { 3431 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3432 childrenToRemove.add(view); 3433 } 3434 } 3435 } 3436 } else if (tag instanceof FolderInfo) { 3437 final FolderInfo info = (FolderInfo) tag; 3438 final ArrayList<ShortcutInfo> contents = info.contents; 3439 final ArrayList<ShortcutInfo> toRemove = new ArrayList<ShortcutInfo>(1); 3440 final int contentsCount = contents.size(); 3441 boolean removedFromFolder = false; 3442 3443 for (int k = 0; k < contentsCount; k++) { 3444 final ShortcutInfo appInfo = contents.get(k); 3445 final Intent intent = appInfo.intent; 3446 final ComponentName name = intent.getComponent(); 3447 3448 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3449 for (String packageName: packageNames) { 3450 if (packageName.equals(name.getPackageName())) { 3451 toRemove.add(appInfo); 3452 LauncherModel.deleteItemFromDatabase(mLauncher, appInfo); 3453 removedFromFolder = true; 3454 } 3455 } 3456 } 3457 } 3458 3459 contents.removeAll(toRemove); 3460 if (removedFromFolder) { 3461 final Folder folder = getOpenFolder(); 3462 if (folder != null) 3463 folder.notifyDataSetChanged(); 3464 } 3465 } else if (tag instanceof LauncherAppWidgetInfo) { 3466 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3467 final AppWidgetProviderInfo provider = 3468 widgets.getAppWidgetInfo(info.appWidgetId); 3469 if (provider != null) { 3470 for (String packageName: packageNames) { 3471 if (packageName.equals(provider.provider.getPackageName())) { 3472 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3473 childrenToRemove.add(view); 3474 } 3475 } 3476 } 3477 } 3478 } 3479 3480 childCount = childrenToRemove.size(); 3481 for (int j = 0; j < childCount; j++) { 3482 View child = childrenToRemove.get(j); 3483 // Note: We can not remove the view directly from CellLayoutChildren as this 3484 // does not re-mark the spaces as unoccupied. 3485 layoutParent.removeViewInLayout(child); 3486 if (child instanceof DropTarget) { 3487 mDragController.removeDropTarget((DropTarget)child); 3488 } 3489 } 3490 3491 if (childCount > 0) { 3492 layout.requestLayout(); 3493 layout.invalidate(); 3494 } 3495 } 3496 }); 3497 } 3498 } 3499 3500 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3501 final int screenCount = getChildCount(); 3502 for (int i = 0; i < screenCount; i++) { 3503 final ViewGroup layout = ((CellLayout) getChildAt(i)).getChildrenLayout(); 3504 int childCount = layout.getChildCount(); 3505 for (int j = 0; j < childCount; j++) { 3506 final View view = layout.getChildAt(j); 3507 Object tag = view.getTag(); 3508 if (tag instanceof ShortcutInfo) { 3509 ShortcutInfo info = (ShortcutInfo)tag; 3510 // We need to check for ACTION_MAIN otherwise getComponent() might 3511 // return null for some shortcuts (for instance, for shortcuts to 3512 // web pages.) 3513 final Intent intent = info.intent; 3514 final ComponentName name = intent.getComponent(); 3515 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3516 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3517 final int appCount = apps.size(); 3518 for (int k = 0; k < appCount; k++) { 3519 ApplicationInfo app = apps.get(k); 3520 if (app.componentName.equals(name)) { 3521 info.setIcon(mIconCache.getIcon(info.intent)); 3522 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 3523 new FastBitmapDrawable(info.getIcon(mIconCache)), 3524 null, null); 3525 } 3526 } 3527 } 3528 } 3529 } 3530 } 3531 } 3532 3533 void moveToDefaultScreen(boolean animate) { 3534 if (mIsSmall || mIsInUnshrinkAnimation) { 3535 mLauncher.showWorkspace(animate, (CellLayout)getChildAt(mDefaultPage)); 3536 } else if (animate) { 3537 snapToPage(mDefaultPage); 3538 } else { 3539 setCurrentPage(mDefaultPage); 3540 } 3541 getChildAt(mDefaultPage).requestFocus(); 3542 } 3543 3544 void setIndicators(Drawable previous, Drawable next) { 3545 mPreviousIndicator = previous; 3546 mNextIndicator = next; 3547 previous.setLevel(mCurrentPage); 3548 next.setLevel(mCurrentPage); 3549 } 3550 3551 @Override 3552 public void syncPages() { 3553 } 3554 3555 @Override 3556 public void syncPageItems(int page) { 3557 } 3558 3559} 3560