Workspace.java revision f4b08913677e18a8412930972237b91d5a946d95
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 / inner ring image(s) 1238 for (int i = 0; i < mFolderOuterRings.size(); i++) { 1239 1240 // Draw outer ring 1241 FolderIcon fi = mFolderOuterRings.get(i); 1242 Drawable d = FolderIcon.sFolderOuterRingDrawable; 1243 int width = (int) (d.getIntrinsicWidth() * fi.getOuterRingScale()); 1244 int height = (int) (d.getIntrinsicHeight() * fi.getOuterRingScale()); 1245 fi.getFolderLocation(mTempLocation); 1246 int x = mTempLocation[0] + mScrollX - width / 2; 1247 int y = mTempLocation[1] + mScrollY - height / 2; 1248 d.setBounds(x, y, x + width, y + height); 1249 d.draw(canvas); 1250 1251 // Draw inner ring 1252 d = FolderIcon.sFolderInnerRingDrawable; 1253 width = (int) (fi.getMeasuredWidth() * fi.getInnerRingScale()); 1254 height = (int) (fi.getMeasuredHeight() * fi.getInnerRingScale()); 1255 x = mTempLocation[0] + mScrollX - width / 2; 1256 y = mTempLocation[1] + mScrollY - height / 2; 1257 d.setBounds(x, y, x + width, y + height); 1258 d.draw(canvas); 1259 } 1260 super.onDraw(canvas); 1261 } 1262 1263 @Override 1264 protected void dispatchDraw(Canvas canvas) { 1265 if (mIsSmall || mIsInUnshrinkAnimation) { 1266 // Draw all the workspaces if we're small 1267 final int pageCount = getChildCount(); 1268 final long drawingTime = getDrawingTime(); 1269 for (int i = 0; i < pageCount; i++) { 1270 final CellLayout page = (CellLayout) getChildAt(i); 1271 if (page.getVisibility() == VISIBLE 1272 && (page.getAlpha() != 0f || page.getBackgroundAlpha() != 0f)) { 1273 drawChild(canvas, page, drawingTime); 1274 } 1275 } 1276 } else { 1277 super.dispatchDraw(canvas); 1278 1279 final int width = getWidth(); 1280 final int height = getHeight(); 1281 1282 // In portrait orientation, draw the glowing edge when dragging to adjacent screens 1283 if (mInScrollArea && (height > width)) { 1284 final int pageHeight = getChildAt(0).getHeight(); 1285 1286 // This determines the height of the glowing edge: 90% of the page height 1287 final int padding = (int) ((height - pageHeight) * 0.5f + pageHeight * 0.1f); 1288 1289 final CellLayout leftPage = (CellLayout) getChildAt(mCurrentPage - 1); 1290 final CellLayout rightPage = (CellLayout) getChildAt(mCurrentPage + 1); 1291 1292 if (leftPage != null && leftPage.getIsDragOverlapping()) { 1293 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left); 1294 d.setBounds(mScrollX, padding, mScrollX + d.getIntrinsicWidth(), height - padding); 1295 d.draw(canvas); 1296 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 1297 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right); 1298 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), padding, mScrollX + width, height - padding); 1299 d.draw(canvas); 1300 } 1301 } 1302 1303 if (mDropView != null) { 1304 // We are animating an item that was just dropped on the home screen. 1305 // Render its View in the current animation position. 1306 canvas.save(Canvas.MATRIX_SAVE_FLAG); 1307 final int xPos = mDropViewPos[0] - mDropView.getScrollX(); 1308 final int yPos = mDropViewPos[1] - mDropView.getScrollY(); 1309 canvas.translate(xPos, yPos); 1310 mDropView.draw(canvas); 1311 canvas.restore(); 1312 } 1313 } 1314 } 1315 1316 @Override 1317 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1318 if (!mLauncher.isAllAppsVisible()) { 1319 final Folder openFolder = getOpenFolder(); 1320 if (openFolder != null) { 1321 return openFolder.requestFocus(direction, previouslyFocusedRect); 1322 } else { 1323 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1324 } 1325 } 1326 return false; 1327 } 1328 1329 @Override 1330 public int getDescendantFocusability() { 1331 if (mIsSmall) { 1332 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1333 } 1334 return super.getDescendantFocusability(); 1335 } 1336 1337 @Override 1338 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1339 if (!mLauncher.isAllAppsVisible()) { 1340 final Folder openFolder = getOpenFolder(); 1341 if (openFolder != null) { 1342 openFolder.addFocusables(views, direction); 1343 } else { 1344 super.addFocusables(views, direction, focusableMode); 1345 } 1346 } 1347 } 1348 1349 void enableChildrenCache(int fromPage, int toPage) { 1350 if (fromPage > toPage) { 1351 final int temp = fromPage; 1352 fromPage = toPage; 1353 toPage = temp; 1354 } 1355 1356 final int screenCount = getChildCount(); 1357 1358 fromPage = Math.max(fromPage, 0); 1359 toPage = Math.min(toPage, screenCount - 1); 1360 1361 for (int i = fromPage; i <= toPage; i++) { 1362 final CellLayout layout = (CellLayout) getChildAt(i); 1363 layout.setChildrenDrawnWithCacheEnabled(true); 1364 layout.setChildrenDrawingCacheEnabled(true); 1365 } 1366 } 1367 1368 void clearChildrenCache() { 1369 final int screenCount = getChildCount(); 1370 for (int i = 0; i < screenCount; i++) { 1371 final CellLayout layout = (CellLayout) getChildAt(i); 1372 layout.setChildrenDrawnWithCacheEnabled(false); 1373 } 1374 } 1375 1376 @Override 1377 public boolean onTouchEvent(MotionEvent ev) { 1378 if (mLauncher.isAllAppsVisible() && mShrinkState == ShrinkState.BOTTOM_HIDDEN) { 1379 PagedView appsPane; 1380 if (LauncherApplication.isScreenLarge()) { 1381 appsPane = (PagedView) mLauncher.findViewById(R.id.all_apps_paged_view); 1382 } else { 1383 appsPane = (PagedView) mLauncher.findViewById(R.id.apps_customize_pane_content); 1384 } 1385 1386 if (appsPane != null) { 1387 if (ev.getAction() == MotionEvent.ACTION_UP && 1388 appsPane.getTouchState() == TOUCH_STATE_REST) { 1389 1390 // Cancel any scrolling that is in progress. 1391 if (!mScroller.isFinished()) { 1392 mScroller.abortAnimation(); 1393 } 1394 setCurrentPage(mCurrentPage); 1395 1396 if (mShrinkState == ShrinkState.BOTTOM_HIDDEN) { 1397 mLauncher.showWorkspace(true); 1398 } 1399 appsPane.onTouchEvent(ev); 1400 return true; 1401 } else { 1402 return appsPane.onTouchEvent(ev); 1403 } 1404 } 1405 } 1406 return super.onTouchEvent(ev); 1407 } 1408 1409 protected void enableChildrenLayers(boolean enable) { 1410 for (int i = 0; i < getPageCount(); i++) { 1411 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(enable); 1412 } 1413 } 1414 @Override 1415 protected void pageBeginMoving() { 1416 enableChildrenLayers(true); 1417 super.pageBeginMoving(); 1418 } 1419 1420 @Override 1421 protected void pageEndMoving() { 1422 if (!mIsSmall && !mIsInUnshrinkAnimation) { 1423 enableChildrenLayers(false); 1424 } 1425 super.pageEndMoving(); 1426 } 1427 1428 @Override 1429 protected void onWallpaperTap(MotionEvent ev) { 1430 final int[] position = mTempCell; 1431 getLocationOnScreen(position); 1432 1433 int pointerIndex = ev.getActionIndex(); 1434 position[0] += (int) ev.getX(pointerIndex); 1435 position[1] += (int) ev.getY(pointerIndex); 1436 1437 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1438 ev.getAction() == MotionEvent.ACTION_UP 1439 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1440 position[0], position[1], 0, null); 1441 } 1442 1443 public boolean isSmall() { 1444 return mIsSmall; 1445 } 1446 1447 private float getYScaleForScreen(int screen) { 1448 int x = Math.abs(screen - 2); 1449 1450 // TODO: This should be generalized for use with arbitrary rotation angles. 1451 switch(x) { 1452 case 0: return EXTRA_SCALE_FACTOR_0; 1453 case 1: return EXTRA_SCALE_FACTOR_1; 1454 case 2: return EXTRA_SCALE_FACTOR_2; 1455 } 1456 return 1.0f; 1457 } 1458 1459 public void shrink(ShrinkState shrinkState) { 1460 shrink(shrinkState, true); 1461 } 1462 1463 private int getCustomizeDrawerHeight() { 1464 TabHost customizationDrawer = mLauncher.getCustomizationDrawer(); 1465 int height = customizationDrawer.getHeight(); 1466 TabWidget tabWidget = (TabWidget) 1467 customizationDrawer.findViewById(com.android.internal.R.id.tabs); 1468 if (tabWidget.getTabCount() > 0) { 1469 TextView tabText = (TextView) tabWidget.getChildTabViewAt(0); 1470 // subtract the empty space above the tab text 1471 height -= ((tabWidget.getHeight() - tabText.getLineHeight())) / 2; 1472 } 1473 return height; 1474 } 1475 1476 // we use this to shrink the workspace for the all apps view and the customize view 1477 public void shrink(ShrinkState shrinkState, boolean animated) { 1478 if (mFirstLayout) { 1479 // (mFirstLayout == "first layout has not happened yet") 1480 // if we get a call to shrink() as part of our initialization (for example, if 1481 // Launcher is started in All Apps mode) then we need to wait for a layout call 1482 // to get our width so we can layout the mini-screen views correctly 1483 mWaitingToShrink = true; 1484 mWaitingToShrinkState = shrinkState; 1485 return; 1486 } 1487 // Stop any scrolling, move to the current page right away 1488 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1489 if (!mIsDragInProcess) { 1490 updateWhichPagesAcceptDrops(shrinkState); 1491 } 1492 1493 CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 1494 if (currentPage == null) { 1495 Log.w(TAG, "currentPage is NULL! mCurrentPage " + mCurrentPage 1496 + " mNextPage " + mNextPage); 1497 return; 1498 } 1499 if (currentPage.getBackgroundAlphaMultiplier() < 1.0f) { 1500 currentPage.setBackgroundAlpha(0.0f); 1501 } 1502 currentPage.setBackgroundAlphaMultiplier(1.0f); 1503 1504 mIsSmall = true; 1505 mShrinkState = shrinkState; 1506 1507 // we intercept and reject all touch events when we're small, so be sure to reset the state 1508 mTouchState = TOUCH_STATE_REST; 1509 mActivePointerId = INVALID_POINTER; 1510 1511 final Resources res = getResources(); 1512 final int screenWidth = getWidth(); 1513 final int screenHeight = getHeight(); 1514 1515 // Making the assumption that all pages have the same width as the 0th 1516 final int pageWidth = getChildAt(0).getMeasuredWidth(); 1517 final int pageHeight = getChildAt(0).getMeasuredHeight(); 1518 1519 final int scaledPageWidth = (int) (SHRINK_FACTOR * pageWidth); 1520 final int scaledPageHeight = (int) (SHRINK_FACTOR * pageHeight); 1521 final float extraScaledSpacing = res.getDimension(R.dimen.smallScreenExtraSpacing); 1522 1523 final int screenCount = getChildCount(); 1524 float totalWidth = screenCount * scaledPageWidth + (screenCount - 1) * extraScaledSpacing; 1525 1526 boolean isPortrait = getMeasuredHeight() > getMeasuredWidth(); 1527 float y = (isPortrait ? 1528 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginPortrait) : 1529 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginLandscape)); 1530 float finalAlpha = 1.0f; 1531 float extraShrinkFactor = 1.0f; 1532 1533 if (shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1534 y = screenHeight - y - scaledPageHeight; 1535 } else if (shrinkState == ShrinkState.BOTTOM_HIDDEN) { 1536 // We shrink and disappear to nothing in the case of all apps 1537 // (which is when we shrink to the bottom) 1538 y = screenHeight - y - scaledPageHeight; 1539 finalAlpha = 0.0f; 1540 } else if (shrinkState == ShrinkState.MIDDLE) { 1541 y = screenHeight / 2 - scaledPageHeight / 2; 1542 finalAlpha = 1.0f; 1543 } else if (shrinkState == ShrinkState.TOP) { 1544 y = (screenHeight - getCustomizeDrawerHeight() - scaledPageHeight) / 2; 1545 } 1546 1547 int duration; 1548 if (shrinkState == ShrinkState.BOTTOM_HIDDEN || shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1549 duration = res.getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1550 } else { 1551 duration = res.getInteger(R.integer.config_customizeWorkspaceShrinkTime); 1552 } 1553 1554 // We animate all the screens to the centered position in workspace 1555 // At the same time, the screens become greyed/dimmed 1556 1557 // newX is initialized to the left-most position of the centered screens 1558 float x = mScroller.getFinalX() + screenWidth / 2 - totalWidth / 2; 1559 1560 // We are going to scale about the center of the view, so we need to adjust the positions 1561 // of the views accordingly 1562 x -= (pageWidth - scaledPageWidth) / 2.0f; 1563 y -= (pageHeight - scaledPageHeight) / 2.0f; 1564 1565 if (mAnimator != null) { 1566 mAnimator.cancel(); 1567 } 1568 1569 mAnimator = new AnimatorSet(); 1570 1571 final float[] oldXs = new float[getChildCount()]; 1572 final float[] oldYs = new float[getChildCount()]; 1573 final float[] oldScaleXs = new float[getChildCount()]; 1574 final float[] oldScaleYs = new float[getChildCount()]; 1575 final float[] oldBackgroundAlphas = new float[getChildCount()]; 1576 final float[] oldAlphas = new float[getChildCount()]; 1577 final float[] oldRotationYs = new float[getChildCount()]; 1578 final float[] newXs = new float[getChildCount()]; 1579 final float[] newYs = new float[getChildCount()]; 1580 final float[] newScaleXs = new float[getChildCount()]; 1581 final float[] newScaleYs = new float[getChildCount()]; 1582 final float[] newBackgroundAlphas = new float[getChildCount()]; 1583 final float[] newAlphas = new float[getChildCount()]; 1584 final float[] newRotationYs = new float[getChildCount()]; 1585 1586 for (int i = 0; i < screenCount; i++) { 1587 final CellLayout cl = (CellLayout) getChildAt(i); 1588 1589 float rotation = (-i + 2) * WORKSPACE_ROTATION; 1590 float rotationScaleX = (float) (1.0f / Math.cos(Math.PI * rotation / 180.0f)); 1591 float rotationScaleY = getYScaleForScreen(i); 1592 1593 oldAlphas[i] = cl.getAlpha(); 1594 newAlphas[i] = finalAlpha; 1595 if (animated && (oldAlphas[i] != 0f || newAlphas[i] != 0f)) { 1596 // if the CellLayout will be visible during the animation, force building its 1597 // hardware layer immediately so we don't see a blip later in the animation 1598 cl.buildChildrenLayer(); 1599 } 1600 if (animated) { 1601 oldXs[i] = cl.getX(); 1602 oldYs[i] = cl.getY(); 1603 oldScaleXs[i] = cl.getScaleX(); 1604 oldScaleYs[i] = cl.getScaleY(); 1605 oldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1606 oldRotationYs[i] = cl.getRotationY(); 1607 newXs[i] = x; 1608 newYs[i] = y; 1609 newScaleXs[i] = SHRINK_FACTOR * rotationScaleX * extraShrinkFactor; 1610 newScaleYs[i] = SHRINK_FACTOR * rotationScaleY * extraShrinkFactor; 1611 newBackgroundAlphas[i] = finalAlpha; 1612 newRotationYs[i] = rotation; 1613 } else { 1614 cl.setX((int)x); 1615 cl.setY((int)y); 1616 cl.setScaleX(SHRINK_FACTOR * rotationScaleX * extraShrinkFactor); 1617 cl.setScaleY(SHRINK_FACTOR * rotationScaleY * extraShrinkFactor); 1618 cl.setBackgroundAlpha(finalAlpha); 1619 cl.setAlpha(finalAlpha); 1620 cl.setRotationY(rotation); 1621 mShrinkAnimationListener.onAnimationEnd(null); 1622 } 1623 // increment newX for the next screen 1624 x += scaledPageWidth + extraScaledSpacing; 1625 } 1626 1627 float wallpaperOffset = 0.5f; 1628 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 1629 int wallpaperTravelHeight = (int) (display.getHeight() * 1630 wallpaperTravelToScreenHeightRatio(display.getWidth(), display.getHeight())); 1631 float offsetFromCenter = (wallpaperTravelHeight / (float) mWallpaperHeight) / 2f; 1632 boolean isLandscape = display.getWidth() > display.getHeight(); 1633 1634 final boolean enableWallpaperEffects = isHardwareAccelerated(); 1635 if (enableWallpaperEffects) { 1636 switch (shrinkState) { 1637 // animating in 1638 case TOP: 1639 // customize 1640 wallpaperOffset = 0.5f + offsetFromCenter; 1641 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.46f : 0.44f); 1642 break; 1643 case MIDDLE: 1644 case SPRING_LOADED: 1645 wallpaperOffset = 0.5f; 1646 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.34f : 0.32f); 1647 break; 1648 case BOTTOM_HIDDEN: 1649 case BOTTOM_VISIBLE: 1650 // allapps 1651 wallpaperOffset = 0.5f - offsetFromCenter; 1652 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.34f : 0.32f); 1653 break; 1654 } 1655 } 1656 1657 setLayoutScale(1.0f); 1658 if (animated) { 1659 if (enableWallpaperEffects) { 1660 mWallpaperOffset.setHorizontalCatchupConstant(0.46f); 1661 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1662 } 1663 1664 mSyncWallpaperOffsetWithScroll = false; 1665 1666 ValueAnimator animWithInterpolator = 1667 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1668 animWithInterpolator.setInterpolator(mZoomOutInterpolator); 1669 1670 final float oldHorizontalWallpaperOffset = getHorizontalWallpaperOffset(); 1671 final float oldVerticalWallpaperOffset = getVerticalWallpaperOffset(); 1672 final float newHorizontalWallpaperOffset = 0.5f; 1673 final float newVerticalWallpaperOffset = wallpaperOffset; 1674 animWithInterpolator.addUpdateListener(new LauncherAnimatorUpdateListener() { 1675 public void onAnimationUpdate(float a, float b) { 1676 if (b == 0f) { 1677 // an optimization, and required for correct behavior. 1678 return; 1679 } 1680 fastInvalidate(); 1681 if (enableWallpaperEffects) { 1682 setHorizontalWallpaperOffset( 1683 a * oldHorizontalWallpaperOffset + b * newHorizontalWallpaperOffset); 1684 setVerticalWallpaperOffset( 1685 a * oldVerticalWallpaperOffset + b * newVerticalWallpaperOffset); 1686 } 1687 for (int i = 0; i < screenCount; i++) { 1688 final CellLayout cl = (CellLayout) getChildAt(i); 1689 cl.fastInvalidate(); 1690 cl.setFastX(a * oldXs[i] + b * newXs[i]); 1691 cl.setFastY(a * oldYs[i] + b * newYs[i]); 1692 cl.setFastScaleX(a * oldScaleXs[i] + b * newScaleXs[i]); 1693 cl.setFastScaleY(a * oldScaleYs[i] + b * newScaleYs[i]); 1694 cl.setFastBackgroundAlpha( 1695 a * oldBackgroundAlphas[i] + b * newBackgroundAlphas[i]); 1696 cl.setFastAlpha(a * oldAlphas[i] + b * newAlphas[i]); 1697 cl.setFastRotationY(a * oldRotationYs[i] + b * newRotationYs[i]); 1698 } 1699 } 1700 }); 1701 mAnimator.playTogether(animWithInterpolator); 1702 mAnimator.addListener(mShrinkAnimationListener); 1703 mAnimator.start(); 1704 } else if (enableWallpaperEffects) { 1705 setVerticalWallpaperOffset(wallpaperOffset); 1706 setHorizontalWallpaperOffset(0.5f); 1707 updateWallpaperOffsetImmediately(); 1708 } 1709 setChildrenDrawnWithCacheEnabled(true); 1710 1711 if (shrinkState == ShrinkState.TOP) { 1712 showBackgroundGradientForCustomizeTray(); 1713 } else { 1714 showBackgroundGradientForAllApps(); 1715 } 1716 } 1717 1718 /* 1719 * This interpolator emulates the rate at which the perceived scale of an object changes 1720 * as its distance from a camera increases. When this interpolator is applied to a scale 1721 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1722 * from the camera. 1723 */ 1724 static class ZInterpolator implements TimeInterpolator { 1725 private float focalLength; 1726 1727 public ZInterpolator(float foc) { 1728 focalLength = foc; 1729 } 1730 1731 public float getInterpolation(float input) { 1732 return (1.0f - focalLength / (focalLength + input)) / 1733 (1.0f - focalLength / (focalLength + 1.0f)); 1734 } 1735 } 1736 1737 /* 1738 * The exact reverse of ZInterpolator. 1739 */ 1740 static class InverseZInterpolator implements TimeInterpolator { 1741 private ZInterpolator zInterpolator; 1742 public InverseZInterpolator(float foc) { 1743 zInterpolator = new ZInterpolator(foc); 1744 } 1745 public float getInterpolation(float input) { 1746 return 1 - zInterpolator.getInterpolation(1 - input); 1747 } 1748 } 1749 1750 /* 1751 * ZInterpolator compounded with an ease-out. 1752 */ 1753 static class ZoomOutInterpolator implements TimeInterpolator { 1754 private final ZInterpolator zInterpolator = new ZInterpolator(0.2f); 1755 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(1.8f); 1756 1757 public float getInterpolation(float input) { 1758 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1759 } 1760 } 1761 1762 /* 1763 * InvereZInterpolator compounded with an ease-out. 1764 */ 1765 static class ZoomInInterpolator implements TimeInterpolator { 1766 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1767 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1768 1769 public float getInterpolation(float input) { 1770 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1771 } 1772 } 1773 1774 private final ZoomOutInterpolator mZoomOutInterpolator = new ZoomOutInterpolator(); 1775 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1776 1777 private void updateWhichPagesAcceptDrops(ShrinkState state) { 1778 updateWhichPagesAcceptDropsHelper(state, false, 1, 1); 1779 } 1780 1781 private void updateWhichPagesAcceptDropsDuringDrag(ShrinkState state, int spanX, int spanY) { 1782 updateWhichPagesAcceptDropsHelper(state, true, spanX, spanY); 1783 } 1784 1785 private void updateWhichPagesAcceptDropsHelper( 1786 ShrinkState state, boolean isDragHappening, int spanX, int spanY) { 1787 final int screenCount = getChildCount(); 1788 for (int i = 0; i < screenCount; i++) { 1789 CellLayout cl = (CellLayout) getChildAt(i); 1790 cl.setIsDragOccuring(isDragHappening); 1791 if (state == null) { 1792 // If we are not in a shrunken state, mark all cell layouts as droppable (if they 1793 // have the space) 1794 cl.setAcceptsDrops(cl.findCellForSpan(null, spanX, spanY)); 1795 } else { 1796 switch (state) { 1797 case TOP: 1798 cl.setIsDefaultDropTarget(i == mCurrentPage); 1799 case BOTTOM_HIDDEN: 1800 case BOTTOM_VISIBLE: 1801 case SPRING_LOADED: 1802 if (state != ShrinkState.TOP) { 1803 cl.setIsDefaultDropTarget(false); 1804 } 1805 if (!isDragHappening) { 1806 // even if a drag isn't happening, we don't want to show a screen as 1807 // accepting drops if it doesn't have at least one free cell 1808 spanX = 1; 1809 spanY = 1; 1810 } 1811 // the page accepts drops if we can find at least one empty spot 1812 cl.setAcceptsDrops(cl.findCellForSpan(null, spanX, spanY)); 1813 break; 1814 default: 1815 throw new RuntimeException("Unhandled ShrinkState " + state); 1816 } 1817 } 1818 } 1819 } 1820 1821 /* 1822 * 1823 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1824 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1825 * 1826 * These methods mark the appropriate pages as accepting drops (which alters their visual 1827 * appearance). 1828 * 1829 */ 1830 public void onDragStartedWithItem(View v) { 1831 mIsDragInProcess = true; 1832 1833 final Canvas canvas = new Canvas(); 1834 1835 // We need to add extra padding to the bitmap to make room for the glow effect 1836 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1837 1838 // The outline is used to visualize where the item will land if dropped 1839 mDragOutline = createDragOutline(v, canvas, bitmapPadding); 1840 } 1841 1842 public void onDragStartedWithItemSpans(int spanX, int spanY, Bitmap b) { 1843 mIsDragInProcess = true; 1844 1845 final Canvas canvas = new Canvas(); 1846 1847 // We need to add extra padding to the bitmap to make room for the glow effect 1848 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1849 1850 CellLayout cl = (CellLayout) getChildAt(0); 1851 1852 int[] size = cl.cellSpansToSize(spanX, spanY); 1853 1854 // The outline is used to visualize where the item will land if dropped 1855 mDragOutline = createDragOutline(b, canvas, bitmapPadding, size[0], size[1]); 1856 1857 updateWhichPagesAcceptDropsDuringDrag(mShrinkState, spanX, spanY); 1858 } 1859 1860 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1861 // never dragged over 1862 public void onDragStopped(boolean success) { 1863 mLastDragView = null; 1864 // In the success case, DragController has already called onDragExit() 1865 if (!success) { 1866 doDragExit(); 1867 } 1868 mIsDragInProcess = false; 1869 updateWhichPagesAcceptDrops(mShrinkState); 1870 } 1871 1872 // We call this when we trigger an unshrink by clicking on the CellLayout cl 1873 public void unshrink(CellLayout clThatWasClicked) { 1874 unshrink(clThatWasClicked, false); 1875 } 1876 1877 public void unshrink(CellLayout clThatWasClicked, boolean springLoaded) { 1878 int newCurrentPage = indexOfChild(clThatWasClicked); 1879 if (mIsSmall) { 1880 if (springLoaded) { 1881 setLayoutScale(SPRING_LOADED_DRAG_SHRINK_FACTOR); 1882 } 1883 scrollToNewPageWithoutMovingPages(newCurrentPage); 1884 unshrink(true, springLoaded); 1885 } 1886 } 1887 1888 1889 public void enterSpringLoadedDragMode(CellLayout clThatWasClicked) { 1890 mShrinkState = ShrinkState.SPRING_LOADED; 1891 unshrink(clThatWasClicked, true); 1892 mDragTargetLayout.onDragEnter(); 1893 } 1894 1895 public void exitSpringLoadedDragMode(ShrinkState shrinkState) { 1896 shrink(shrinkState); 1897 if (mDragTargetLayout != null) { 1898 mDragTargetLayout.onDragExit(); 1899 } 1900 } 1901 1902 public void exitWidgetResizeMode() { 1903 DragLayer dragLayer = (DragLayer) mLauncher.findViewById(R.id.drag_layer); 1904 dragLayer.clearAllResizeFrames(); 1905 } 1906 1907 void unshrink(boolean animated) { 1908 unshrink(animated, false); 1909 } 1910 1911 void unshrink(boolean animated, boolean springLoaded) { 1912 mWaitingToShrink = false; 1913 if (mIsSmall) { 1914 float finalScaleFactor = 1.0f; 1915 float finalBackgroundAlpha = 0.0f; 1916 if (springLoaded) { 1917 finalScaleFactor = SPRING_LOADED_DRAG_SHRINK_FACTOR; 1918 finalBackgroundAlpha = 1.0f; 1919 } else { 1920 mIsSmall = false; 1921 } 1922 if (mAnimator != null) { 1923 mAnimator.cancel(); 1924 } 1925 1926 mAnimator = new AnimatorSet(); 1927 final int screenCount = getChildCount(); 1928 1929 final int duration = getResources().getInteger(R.integer.config_workspaceUnshrinkTime); 1930 1931 final float[] oldTranslationXs = new float[getChildCount()]; 1932 final float[] oldTranslationYs = new float[getChildCount()]; 1933 final float[] oldScaleXs = new float[getChildCount()]; 1934 final float[] oldScaleYs = new float[getChildCount()]; 1935 final float[] oldBackgroundAlphas = new float[getChildCount()]; 1936 final float[] oldBackgroundAlphaMultipliers = new float[getChildCount()]; 1937 final float[] oldAlphas = new float[getChildCount()]; 1938 final float[] oldRotationYs = new float[getChildCount()]; 1939 final float[] newTranslationXs = new float[getChildCount()]; 1940 final float[] newTranslationYs = new float[getChildCount()]; 1941 final float[] newScaleXs = new float[getChildCount()]; 1942 final float[] newScaleYs = new float[getChildCount()]; 1943 final float[] newBackgroundAlphas = new float[getChildCount()]; 1944 final float[] newBackgroundAlphaMultipliers = new float[getChildCount()]; 1945 final float[] newAlphas = new float[getChildCount()]; 1946 final float[] newRotationYs = new float[getChildCount()]; 1947 1948 for (int i = 0; i < screenCount; i++) { 1949 final CellLayout cl = (CellLayout)getChildAt(i); 1950 float finalAlphaValue = 0f; 1951 float rotation = 0f; 1952 if (LauncherApplication.isScreenLarge()) { 1953 finalAlphaValue = (i == mCurrentPage) ? 1.0f : 0.0f; 1954 1955 if (i < mCurrentPage) { 1956 rotation = WORKSPACE_ROTATION; 1957 } else if (i > mCurrentPage) { 1958 rotation = -WORKSPACE_ROTATION; 1959 } 1960 } else { 1961 // Don't hide the side panes on the phone if we don't also update the side pages 1962 // alpha. See screenScrolled(). 1963 finalAlphaValue = 1f; 1964 } 1965 float finalAlphaMultiplierValue = 1966 ((i == mCurrentPage) && (mShrinkState != ShrinkState.SPRING_LOADED)) ? 1967 0.0f : 1.0f; 1968 1969 float translation = 0f; 1970 1971 // If the screen is not xlarge, then don't rotate the CellLayouts 1972 // NOTE: If we don't update the side pages alpha, then we should not hide the side 1973 // pages. see unshrink(). 1974 if (LauncherApplication.isScreenLarge()) { 1975 translation = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1976 } 1977 1978 oldAlphas[i] = cl.getAlpha(); 1979 newAlphas[i] = finalAlphaValue; 1980 if (animated) { 1981 oldTranslationXs[i] = cl.getTranslationX(); 1982 oldTranslationYs[i] = cl.getTranslationY(); 1983 oldScaleXs[i] = cl.getScaleX(); 1984 oldScaleYs[i] = cl.getScaleY(); 1985 oldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1986 oldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1987 oldRotationYs[i] = cl.getRotationY(); 1988 1989 newTranslationXs[i] = translation; 1990 newTranslationYs[i] = 0f; 1991 newScaleXs[i] = finalScaleFactor; 1992 newScaleYs[i] = finalScaleFactor; 1993 newBackgroundAlphas[i] = finalBackgroundAlpha; 1994 newBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1995 newRotationYs[i] = rotation; 1996 } else { 1997 cl.setTranslationX(translation); 1998 cl.setTranslationY(0.0f); 1999 cl.setScaleX(finalScaleFactor); 2000 cl.setScaleY(finalScaleFactor); 2001 cl.setBackgroundAlpha(0.0f); 2002 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 2003 cl.setAlpha(finalAlphaValue); 2004 cl.setRotationY(rotation); 2005 mUnshrinkAnimationListener.onAnimationEnd(null); 2006 } 2007 } 2008 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 2009 boolean isLandscape = display.getWidth() > display.getHeight(); 2010 final boolean enableWallpaperEffects = isHardwareAccelerated(); 2011 if (enableWallpaperEffects) { 2012 switch (mShrinkState) { 2013 // animating out 2014 case TOP: 2015 // customize 2016 if (animated) { 2017 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.65f : 0.62f); 2018 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.65f : 0.62f); 2019 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 2020 } 2021 break; 2022 case MIDDLE: 2023 case SPRING_LOADED: 2024 if (animated) { 2025 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.49f : 0.46f); 2026 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.49f : 0.46f); 2027 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 2028 } 2029 break; 2030 case BOTTOM_HIDDEN: 2031 case BOTTOM_VISIBLE: 2032 // all apps 2033 if (animated) { 2034 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.65f : 0.65f); 2035 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.65f : 0.65f); 2036 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 2037 } 2038 break; 2039 } 2040 } 2041 if (animated) { 2042 ValueAnimator animWithInterpolator = 2043 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 2044 animWithInterpolator.setInterpolator(mZoomInInterpolator); 2045 2046 final float oldHorizontalWallpaperOffset = enableWallpaperEffects ? 2047 getHorizontalWallpaperOffset() : 0; 2048 final float oldVerticalWallpaperOffset = enableWallpaperEffects ? 2049 getVerticalWallpaperOffset() : 0; 2050 final float newHorizontalWallpaperOffset = enableWallpaperEffects ? 2051 wallpaperOffsetForCurrentScroll() : 0; 2052 final float newVerticalWallpaperOffset = enableWallpaperEffects ? 0.5f : 0; 2053 animWithInterpolator.addUpdateListener(new LauncherAnimatorUpdateListener() { 2054 public void onAnimationUpdate(float a, float b) { 2055 if (b == 0f) { 2056 // an optimization, but not required 2057 return; 2058 } 2059 fastInvalidate(); 2060 if (enableWallpaperEffects) { 2061 setHorizontalWallpaperOffset(a * oldHorizontalWallpaperOffset 2062 + b * newHorizontalWallpaperOffset); 2063 setVerticalWallpaperOffset(a * oldVerticalWallpaperOffset 2064 + b * newVerticalWallpaperOffset); 2065 } 2066 for (int i = 0; i < screenCount; i++) { 2067 final CellLayout cl = (CellLayout) getChildAt(i); 2068 cl.fastInvalidate(); 2069 cl.setFastTranslationX( 2070 a * oldTranslationXs[i] + b * newTranslationXs[i]); 2071 cl.setFastTranslationY( 2072 a * oldTranslationYs[i] + b * newTranslationYs[i]); 2073 cl.setFastScaleX(a * oldScaleXs[i] + b * newScaleXs[i]); 2074 cl.setFastScaleY(a * oldScaleYs[i] + b * newScaleYs[i]); 2075 cl.setFastBackgroundAlpha( 2076 a * oldBackgroundAlphas[i] + b * newBackgroundAlphas[i]); 2077 cl.setBackgroundAlphaMultiplier(a * oldBackgroundAlphaMultipliers[i] + 2078 b * newBackgroundAlphaMultipliers[i]); 2079 cl.setFastAlpha(a * oldAlphas[i] + b * newAlphas[i]); 2080 } 2081 } 2082 }); 2083 2084 ValueAnimator rotationAnim = 2085 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 2086 rotationAnim.setInterpolator(new DecelerateInterpolator(2.0f)); 2087 rotationAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 2088 public void onAnimationUpdate(float a, float b) { 2089 // don't invalidate workspace because we did it above 2090 if (b == 0f) { 2091 // an optimization, but not required 2092 return; 2093 } 2094 for (int i = 0; i < screenCount; i++) { 2095 final CellLayout cl = (CellLayout) getChildAt(i); 2096 cl.setFastRotationY(a * oldRotationYs[i] + b * newRotationYs[i]); 2097 } 2098 } 2099 }); 2100 2101 mAnimator.playTogether(animWithInterpolator, rotationAnim); 2102 // If we call this when we're not animated, onAnimationEnd is never called on 2103 // the listener; make sure we only use the listener when we're actually animating 2104 mAnimator.addListener(mUnshrinkAnimationListener); 2105 mAnimator.start(); 2106 } else { 2107 if (enableWallpaperEffects) { 2108 setHorizontalWallpaperOffset(wallpaperOffsetForCurrentScroll()); 2109 setVerticalWallpaperOffset(0.5f); 2110 updateWallpaperOffsetImmediately(); 2111 } 2112 } 2113 } 2114 2115 if (!springLoaded) { 2116 hideBackgroundGradient(); 2117 } 2118 } 2119 2120 /** 2121 * Draw the View v into the given Canvas. 2122 * 2123 * @param v the view to draw 2124 * @param destCanvas the canvas to draw on 2125 * @param padding the horizontal and vertical padding to use when drawing 2126 */ 2127 private void drawDragView(View v, Canvas destCanvas, int padding) { 2128 final Rect clipRect = mTempRect; 2129 v.getDrawingRect(clipRect); 2130 2131 // For a TextView, adjust the clip rect so that we don't include the text label 2132 if (v instanceof FolderIcon) { 2133 } else if (v instanceof BubbleTextView) { 2134 final BubbleTextView tv = (BubbleTextView) v; 2135 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 2136 tv.getLayout().getLineTop(0); 2137 } else if (v instanceof TextView) { 2138 final TextView tv = (TextView) v; 2139 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 2140 tv.getLayout().getLineTop(0); 2141 } 2142 2143 // Draw the View into the bitmap. 2144 // The translate of scrollX and scrollY is necessary when drawing TextViews, because 2145 // they set scrollX and scrollY to large values to achieve centered text 2146 2147 destCanvas.save(); 2148 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 2149 destCanvas.clipRect(clipRect, Op.REPLACE); 2150 v.draw(destCanvas); 2151 destCanvas.restore(); 2152 } 2153 2154 /** 2155 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2156 * Responsibility for the bitmap is transferred to the caller. 2157 */ 2158 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 2159 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 2160 final Bitmap b = Bitmap.createBitmap( 2161 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 2162 2163 canvas.setBitmap(b); 2164 drawDragView(v, canvas, padding); 2165 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2166 return b; 2167 } 2168 2169 /** 2170 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2171 * Responsibility for the bitmap is transferred to the caller. 2172 */ 2173 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h) { 2174 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 2175 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 2176 canvas.setBitmap(b); 2177 2178 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 2179 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 2180 (h - padding) / (float) orig.getHeight()); 2181 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 2182 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 2183 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 2184 2185 // center the image 2186 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 2187 2188 Paint p = new Paint(); 2189 p.setFilterBitmap(true); 2190 canvas.drawBitmap(orig, src, dst, p); 2191 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2192 2193 return b; 2194 } 2195 2196 /** 2197 * Creates a drag outline to represent a drop (that we don't have the actual information for 2198 * yet). May be changed in the future to alter the drop outline slightly depending on the 2199 * clip description mime data. 2200 */ 2201 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 2202 Resources r = getResources(); 2203 final int outlineColor = r.getColor(R.color.drag_outline_color); 2204 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 2205 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 2206 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 2207 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 2208 final Bitmap b = Bitmap.createBitmap( 2209 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 2210 2211 canvas.setBitmap(b); 2212 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 2213 rectRadius, rectRadius, mExternalDragOutlinePaint); 2214 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2215 return b; 2216 } 2217 2218 /** 2219 * Returns a new bitmap to show when the given View is being dragged around. 2220 * Responsibility for the bitmap is transferred to the caller. 2221 */ 2222 private Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 2223 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 2224 final Bitmap b = Bitmap.createBitmap( 2225 mDragOutline.getWidth(), mDragOutline.getHeight(), Bitmap.Config.ARGB_8888); 2226 2227 canvas.setBitmap(b); 2228 canvas.drawBitmap(mDragOutline, 0, 0, null); 2229 drawDragView(v, canvas, padding); 2230 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 2231 2232 return b; 2233 } 2234 2235 void startDrag(CellLayout.CellInfo cellInfo) { 2236 View child = cellInfo.cell; 2237 2238 // Make sure the drag was started by a long press as opposed to a long click. 2239 if (!child.isInTouchMode()) { 2240 return; 2241 } 2242 2243 mDragInfo = cellInfo; 2244 2245 CellLayout current = (CellLayout) getChildAt(cellInfo.screen); 2246 current.onDragChild(child); 2247 2248 child.clearFocus(); 2249 child.setPressed(false); 2250 2251 final Canvas canvas = new Canvas(); 2252 2253 // We need to add extra padding to the bitmap to make room for the glow effect 2254 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2255 2256 // The outline is used to visualize where the item will land if dropped 2257 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 2258 2259 // The drag bitmap follows the touch point around on the screen 2260 final Bitmap b = createDragBitmap(child, canvas, bitmapPadding); 2261 2262 final int bmpWidth = b.getWidth(); 2263 final int bmpHeight = b.getHeight(); 2264 2265 child.getLocationOnScreen(mTempXY); 2266 final int screenX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 2267 final int screenY = (int) mTempXY[1] + (child.getHeight() - bmpHeight) / 2; 2268 2269 Rect dragRect = null; 2270 if ((child instanceof BubbleTextView) && !(child instanceof FolderIcon)) { 2271 int iconSize = getResources().getDimensionPixelSize(R.dimen.app_icon_size); 2272 int top = child.getPaddingTop(); 2273 int left = (bmpWidth - iconSize) / 2; 2274 int right = left + iconSize; 2275 int bottom = top + iconSize; 2276 dragRect = new Rect(left, top, right, bottom); 2277 } 2278 2279 mLauncher.lockScreenOrientation(); 2280 mDragController.startDrag(b, screenX, screenY, this, child.getTag(), 2281 DragController.DRAG_ACTION_MOVE, dragRect); 2282 b.recycle(); 2283 } 2284 2285 void addApplicationShortcut(ShortcutInfo info, int screen, int cellX, int cellY, 2286 boolean insertAtFirst, int intersectX, int intersectY) { 2287 final CellLayout cellLayout = (CellLayout) getChildAt(screen); 2288 View view = mLauncher.createShortcut(R.layout.application, cellLayout, (ShortcutInfo) info); 2289 2290 final int[] cellXY = new int[2]; 2291 cellLayout.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 2292 addInScreen(view, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 2293 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 2294 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2295 cellXY[0], cellXY[1]); 2296 } 2297 2298 private void setPositionForDropAnimation( 2299 View dragView, int dragViewX, int dragViewY, View parent, View child) { 2300 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 2301 2302 // Based on the position of the drag view, find the top left of the original view 2303 int viewX = dragViewX + (dragView.getWidth() - child.getMeasuredWidth()) / 2; 2304 int viewY = dragViewY + (dragView.getHeight() - child.getMeasuredHeight()) / 2; 2305 2306 CellLayout layout = (CellLayout) parent; 2307 2308 // Set its old pos (in the new parent's coordinates); it will be animated 2309 // in animateViewIntoPosition after the next layout pass 2310 lp.oldX = viewX - (layout.getLeft() + layout.getLeftPadding() - mScrollX); 2311 lp.oldY = viewY - (layout.getTop() + layout.getTopPadding() - mScrollY); 2312 } 2313 2314 /* 2315 * We should be careful that this method cannot result in any synchronous requestLayout() 2316 * calls, as it is called from onLayout(). 2317 */ 2318 public void animateViewIntoPosition(final View view) { 2319 final CellLayout parent = (CellLayout) view.getParent().getParent(); 2320 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2321 2322 // Convert the animation params to be relative to the Workspace, not the CellLayout 2323 final int fromX = lp.oldX + parent.getLeft() + parent.getLeftPadding(); 2324 final int fromY = lp.oldY + parent.getTop() + parent.getTopPadding(); 2325 2326 final int dx = lp.x - lp.oldX; 2327 final int dy = lp.y - lp.oldY; 2328 2329 // Calculate the duration of the animation based on the object's distance 2330 final float dist = (float) Math.sqrt(dx*dx + dy*dy); 2331 final Resources res = getResources(); 2332 final float maxDist = (float) res.getInteger(R.integer.config_dropAnimMaxDist); 2333 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration); 2334 if (dist < maxDist) { 2335 duration *= mQuintEaseOutInterpolator.getInterpolation(dist / maxDist); 2336 } 2337 2338 if (mDropAnim != null) { 2339 mDropAnim.end(); 2340 } 2341 mDropAnim = new ValueAnimator(); 2342 mDropAnim.setInterpolator(mQuintEaseOutInterpolator); 2343 2344 // The view is invisible during the animation; we render it manually. 2345 mDropAnim.addListener(new AnimatorListenerAdapter() { 2346 public void onAnimationStart(Animator animation) { 2347 // Set this here so that we don't render it until the animation begins 2348 mDropView = view; 2349 } 2350 2351 public void onAnimationEnd(Animator animation) { 2352 if (mDropView != null) { 2353 mDropView.setVisibility(View.VISIBLE); 2354 mDropView = null; 2355 } 2356 } 2357 }); 2358 2359 mDropAnim.setDuration(duration); 2360 mDropAnim.setFloatValues(0.0f, 1.0f); 2361 mDropAnim.removeAllUpdateListeners(); 2362 mDropAnim.addUpdateListener(new AnimatorUpdateListener() { 2363 public void onAnimationUpdate(ValueAnimator animation) { 2364 final float percent = (Float) animation.getAnimatedValue(); 2365 // Invalidate the old position 2366 invalidate(mDropViewPos[0], mDropViewPos[1], 2367 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 2368 2369 mDropViewPos[0] = fromX + (int) (percent * dx + 0.5f); 2370 mDropViewPos[1] = fromY + (int) (percent * dy + 0.5f); 2371 invalidate(mDropViewPos[0], mDropViewPos[1], 2372 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 2373 } 2374 }); 2375 2376 mDropAnim.start(); 2377 } 2378 2379 /** 2380 * {@inheritDoc} 2381 */ 2382 public boolean acceptDrop(DragSource source, int x, int y, 2383 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 2384 2385 // If it's an external drop (e.g. from All Apps), check if it should be accepted 2386 if (source != this) { 2387 // Don't accept the drop if we're not over a screen at time of drop 2388 if (mDragTargetLayout == null || !mDragTargetLayout.getAcceptsDrops()) { 2389 return false; 2390 } 2391 2392 final CellLayout.CellInfo dragCellInfo = mDragInfo; 2393 final int spanX = dragCellInfo == null ? 1 : dragCellInfo.spanX; 2394 final int spanY = dragCellInfo == null ? 1 : dragCellInfo.spanY; 2395 2396 final View ignoreView = dragCellInfo == null ? null : dragCellInfo.cell; 2397 2398 // Don't accept the drop if there's no room for the item 2399 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 2400 mLauncher.showOutOfSpaceMessage(); 2401 return false; 2402 } 2403 } 2404 return true; 2405 } 2406 2407 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int originX, int originY) { 2408 mTargetCell = findNearestArea(originX, originY, 2409 1, 1, target, 2410 mTargetCell); 2411 2412 View v = target.getChildAt(mTargetCell[0], mTargetCell[1]); 2413 boolean hasntMoved = mDragInfo != null && (mDragInfo.cellX == mTargetCell[0] && 2414 mDragInfo.cellY == mTargetCell[1]); 2415 2416 if (v == null || hasntMoved) return false; 2417 2418 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2419 boolean willBecomeShortcut = 2420 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2421 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2422 2423 return (aboveShortcut && willBecomeShortcut); 2424 } 2425 2426 boolean createUserFolderIfNecessary(View newView, CellLayout target, int originX, 2427 int originY, boolean external) { 2428 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2429 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2430 2431 // First we find the cell nearest to point at which the item is dropped, without 2432 // any consideration to whether there is an item there. 2433 mTargetCell = findNearestArea(originX, originY, 2434 spanX, spanY, target, 2435 mTargetCell); 2436 2437 View v = target.getChildAt(mTargetCell[0], mTargetCell[1]); 2438 boolean hasntMoved = mDragInfo != null && (mDragInfo.cellX == mTargetCell[0] && 2439 mDragInfo.cellY == mTargetCell[1]); 2440 2441 if (v == null || hasntMoved) return false; 2442 2443 final int screen = (mTargetCell == null) ? 2444 mDragInfo.screen : indexOfChild(target); 2445 2446 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2447 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2448 2449 if (aboveShortcut && willBecomeShortcut) { 2450 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2451 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2452 // if the drag started here, we need to remove it from the workspace 2453 if (!external) { 2454 int fromScreen = mDragInfo.screen; 2455 CellLayout sourceLayout = (CellLayout) getChildAt(fromScreen); 2456 sourceLayout.removeView(newView); 2457 } 2458 2459 target.removeView(v); 2460 FolderIcon fi = mLauncher.addFolder(screen, mTargetCell[0], mTargetCell[1]); 2461 destInfo.cellX = -1; 2462 destInfo.cellY = -1; 2463 sourceInfo.cellX = -1; 2464 sourceInfo.cellY = -1; 2465 fi.addItem(destInfo); 2466 fi.addItem(sourceInfo); 2467 return true; 2468 } 2469 return false; 2470 } 2471 2472 public void onDrop(DragSource source, int x, int y, int xOffset, int yOffset, 2473 DragView dragView, Object dragInfo) { 2474 2475 mDragViewVisualCenter = getDragViewVisualCenter(x, y, xOffset, yOffset, dragView, 2476 mDragViewVisualCenter); 2477 2478 // We want the point to be mapped to the dragTarget. 2479 if (mDragTargetLayout != null) { 2480 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2481 } 2482 2483 // When you are in customization mode and drag to a particular screen, make that the 2484 // new current/default screen, so any subsequent taps add items to that screen 2485 if (!mLauncher.isAllAppsVisible()) { 2486 int dragTargetIndex = indexOfChild(mDragTargetLayout); 2487 if (mCurrentPage != dragTargetIndex && (mIsSmall || mIsInUnshrinkAnimation)) { 2488 scrollToNewPageWithoutMovingPages(dragTargetIndex); 2489 } 2490 } 2491 2492 if (source != this) { 2493 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2494 (int) mDragViewVisualCenter[1] }; 2495 if (LauncherApplication.isScreenLarge() && (mIsSmall || mIsInUnshrinkAnimation) 2496 && !mLauncher.isAllAppsVisible()) { 2497 // When the workspace is shrunk and the drop comes from customize, don't actually 2498 // add the item to the screen -- customize will do this itself 2499 ((ItemInfo) dragInfo).dropPos = touchXY; 2500 return; 2501 } 2502 onDropExternal(touchXY, dragInfo, mDragTargetLayout, false, dragView); 2503 } else if (mDragInfo != null) { 2504 final View cell = mDragInfo.cell; 2505 CellLayout dropTargetLayout = mDragTargetLayout; 2506 boolean dropInscrollArea = false; 2507 2508 // Handle the case where the user drops when in the scroll area. 2509 // This is treated as a drop on the adjacent page. 2510 if (dropTargetLayout == null && mInScrollArea) { 2511 dropInscrollArea = true; 2512 if (mPendingScrollDirection == DragController.SCROLL_LEFT) { 2513 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage - 1); 2514 } else if (mPendingScrollDirection == DragController.SCROLL_RIGHT) { 2515 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage + 1); 2516 } 2517 } 2518 2519 if (dropTargetLayout != null) { 2520 // Move internally 2521 final int screen = (mTargetCell == null) ? 2522 mDragInfo.screen : indexOfChild(dropTargetLayout); 2523 2524 // If the item being dropped is a shortcut and the nearest drop cell also contains 2525 // a shortcut, then create a folder with the two shortcuts. 2526 if (!dropInscrollArea && createUserFolderIfNecessary(cell, dropTargetLayout, 2527 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], false)) { 2528 return; 2529 } 2530 2531 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2532 // we need to find the nearest cell location that is vacant 2533 mTargetCell = findNearestVacantArea((int) mDragViewVisualCenter[0], 2534 (int) mDragViewVisualCenter[1], mDragInfo.spanX, mDragInfo.spanY, cell, 2535 dropTargetLayout, mTargetCell); 2536 2537 if (screen != mCurrentPage) { 2538 snapToPage(screen); 2539 } 2540 2541 if (mTargetCell != null) { 2542 if (screen != mDragInfo.screen) { 2543 // Reparent the view 2544 ((CellLayout) getChildAt(mDragInfo.screen)).removeView(cell); 2545 addInScreen(cell, screen, mTargetCell[0], mTargetCell[1], 2546 mDragInfo.spanX, mDragInfo.spanY); 2547 } 2548 2549 // update the item's position after drop 2550 final ItemInfo info = (ItemInfo) cell.getTag(); 2551 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2552 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 2553 lp.cellX = mTargetCell[0]; 2554 lp.cellY = mTargetCell[1]; 2555 cell.setId(LauncherModel.getCellLayoutChildId(-1, mDragInfo.screen, 2556 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2557 2558 if (cell instanceof LauncherAppWidgetHostView) { 2559 final CellLayout cellLayout = dropTargetLayout; 2560 // We post this call so that the widget has a chance to be placed 2561 // in its final location 2562 2563 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2564 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2565 if (pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2566 final Runnable resizeRunnable = new Runnable() { 2567 public void run() { 2568 DragLayer dragLayer = (DragLayer) 2569 mLauncher.findViewById(R.id.drag_layer); 2570 dragLayer.addResizeFrame(info, hostView, 2571 cellLayout); 2572 } 2573 }; 2574 post(new Runnable() { 2575 public void run() { 2576 if (!isPageMoving()) { 2577 resizeRunnable.run(); 2578 } else { 2579 mDelayedResizeRunnable = resizeRunnable; 2580 } 2581 } 2582 }); 2583 } 2584 } 2585 2586 LauncherModel.moveItemInDatabase(mLauncher, info, 2587 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2588 lp.cellX, lp.cellY); 2589 } 2590 } 2591 2592 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2593 2594 int loc[] = new int[2]; 2595 getViewLocationRelativeToSelf(dragView, loc); 2596 2597 // Prepare it to be animated into its new position 2598 // This must be called after the view has been re-parented 2599 setPositionForDropAnimation(dragView, loc[0], loc[1], parent, cell); 2600 boolean animateDrop = !mWasSpringLoadedOnDragExit; 2601 parent.onDropChild(cell, animateDrop); 2602 } 2603 } 2604 2605 private void getViewLocationRelativeToSelf(View v, int[] location) { 2606 getLocationOnScreen(location); 2607 int x = location[0]; 2608 int y = location[1]; 2609 2610 v.getLocationOnScreen(location); 2611 int vX = location[0]; 2612 int vY = location[1]; 2613 2614 location[0] = vX - x; 2615 location[1] = vY - y; 2616 } 2617 2618 public void onDragEnter(DragSource source, int x, int y, int xOffset, 2619 int yOffset, DragView dragView, Object dragInfo) { 2620 mDragTargetLayout = null; // Reset the drag state 2621 2622 if (!mIsSmall) { 2623 mDragTargetLayout = getCurrentDropLayout(); 2624 mDragTargetLayout.onDragEnter(); 2625 showOutlines(); 2626 } 2627 } 2628 2629 public DropTarget getDropTargetDelegate(DragSource source, int x, int y, 2630 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 2631 2632 if (mIsSmall || mIsInUnshrinkAnimation) { 2633 // If we're shrunken, don't let anyone drag on folders/etc that are on the mini-screens 2634 return null; 2635 } 2636 // We may need to delegate the drag to a child view. If a 1x1 item 2637 // would land in a cell occupied by a DragTarget (e.g. a Folder), 2638 // then drag events should be handled by that child. 2639 2640 ItemInfo item = (ItemInfo) dragInfo; 2641 CellLayout currentLayout = getCurrentDropLayout(); 2642 2643 int dragPointX, dragPointY; 2644 if (item.spanX == 1 && item.spanY == 1) { 2645 // For a 1x1, calculate the drop cell exactly as in onDragOver 2646 dragPointX = x - xOffset; 2647 dragPointY = y - yOffset; 2648 } else { 2649 // Otherwise, use the exact drag coordinates 2650 dragPointX = x; 2651 dragPointY = y; 2652 } 2653 dragPointX += mScrollX - currentLayout.getLeft(); 2654 dragPointY += mScrollY - currentLayout.getTop(); 2655 2656 // If we are dragging over a cell that contains a DropTarget that will 2657 // accept the drop, delegate to that DropTarget. 2658 final int[] cellXY = mTempCell; 2659 currentLayout.estimateDropCell(dragPointX, dragPointY, item.spanX, item.spanY, cellXY); 2660 View child = currentLayout.getChildAt(cellXY[0], cellXY[1]); 2661 if (child instanceof DropTarget) { 2662 DropTarget target = (DropTarget)child; 2663 if (target.acceptDrop(source, x, y, xOffset, yOffset, dragView, dragInfo)) { 2664 return target; 2665 } 2666 } 2667 return null; 2668 } 2669 2670 /** 2671 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 2672 * in the returned structure related to the widgets that match the drop (or a null list if it is 2673 * a shortcut drop). If the drop is not accepted then a null structure is returned. 2674 */ 2675 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 2676 final LauncherModel model = mLauncher.getModel(); 2677 final ClipDescription desc = event.getClipDescription(); 2678 final int mimeTypeCount = desc.getMimeTypeCount(); 2679 for (int i = 0; i < mimeTypeCount; ++i) { 2680 final String mimeType = desc.getMimeType(i); 2681 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 2682 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 2683 } else { 2684 final List<WidgetMimeTypeHandlerData> widgets = 2685 model.resolveWidgetsForMimeType(mContext, mimeType); 2686 if (widgets.size() > 0) { 2687 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 2688 } 2689 } 2690 } 2691 return null; 2692 } 2693 2694 /** 2695 * Global drag and drop handler 2696 */ 2697 @Override 2698 public boolean onDragEvent(DragEvent event) { 2699 final ClipDescription desc = event.getClipDescription(); 2700 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 2701 final int[] pos = new int[2]; 2702 layout.getLocationOnScreen(pos); 2703 // We need to offset the drag coordinates to layout coordinate space 2704 final int x = (int) event.getX() - pos[0]; 2705 final int y = (int) event.getY() - pos[1]; 2706 2707 switch (event.getAction()) { 2708 case DragEvent.ACTION_DRAG_STARTED: { 2709 // Validate this drag 2710 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2711 if (test != null) { 2712 boolean isShortcut = (test.second == null); 2713 if (isShortcut) { 2714 // Check if we have enough space on this screen to add a new shortcut 2715 if (!layout.findCellForSpan(pos, 1, 1)) { 2716 Toast.makeText(mContext, mContext.getString(R.string.out_of_space), 2717 Toast.LENGTH_SHORT).show(); 2718 return false; 2719 } 2720 } 2721 } else { 2722 // Show error message if we couldn't accept any of the items 2723 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 2724 Toast.LENGTH_SHORT).show(); 2725 return false; 2726 } 2727 2728 // Create the drag outline 2729 // We need to add extra padding to the bitmap to make room for the glow effect 2730 final Canvas canvas = new Canvas(); 2731 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2732 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 2733 2734 // Show the current page outlines to indicate that we can accept this drop 2735 showOutlines(); 2736 layout.setIsDragOccuring(true); 2737 layout.onDragEnter(); 2738 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2739 2740 return true; 2741 } 2742 case DragEvent.ACTION_DRAG_LOCATION: 2743 // Visualize the drop location 2744 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2745 return true; 2746 case DragEvent.ACTION_DROP: { 2747 // Try and add any shortcuts 2748 final LauncherModel model = mLauncher.getModel(); 2749 final ClipData data = event.getClipData(); 2750 2751 // We assume that the mime types are ordered in descending importance of 2752 // representation. So we enumerate the list of mime types and alert the 2753 // user if any widgets can handle the drop. Only the most preferred 2754 // representation will be handled. 2755 pos[0] = x; 2756 pos[1] = y; 2757 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2758 if (test != null) { 2759 final int index = test.first; 2760 final List<WidgetMimeTypeHandlerData> widgets = test.second; 2761 final boolean isShortcut = (widgets == null); 2762 final String mimeType = desc.getMimeType(index); 2763 if (isShortcut) { 2764 final Intent intent = data.getItemAt(index).getIntent(); 2765 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 2766 onDropExternal(new int[] { x, y }, info, layout, false); 2767 } else { 2768 if (widgets.size() == 1) { 2769 // If there is only one item, then go ahead and add and configure 2770 // that widget 2771 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 2772 final PendingAddWidgetInfo createInfo = 2773 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 2774 mLauncher.addAppWidgetFromDrop(createInfo, mCurrentPage, pos); 2775 } else { 2776 // Show the widget picker dialog if there is more than one widget 2777 // that can handle this data type 2778 final InstallWidgetReceiver.WidgetListAdapter adapter = 2779 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 2780 data, widgets, layout, mCurrentPage, pos); 2781 final AlertDialog.Builder builder = 2782 new AlertDialog.Builder(mContext); 2783 builder.setAdapter(adapter, adapter); 2784 builder.setCancelable(true); 2785 builder.setTitle(mContext.getString( 2786 R.string.external_drop_widget_pick_title)); 2787 builder.setIcon(R.drawable.ic_no_applications); 2788 builder.show(); 2789 } 2790 } 2791 } 2792 return true; 2793 } 2794 case DragEvent.ACTION_DRAG_ENDED: 2795 // Hide the page outlines after the drop 2796 layout.setIsDragOccuring(false); 2797 layout.onDragExit(); 2798 hideOutlines(); 2799 return true; 2800 } 2801 return super.onDragEvent(event); 2802 } 2803 2804 /* 2805 * 2806 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2807 * coordinate space. The argument xy is modified with the return result. 2808 * 2809 */ 2810 void mapPointFromSelfToChild(View v, float[] xy) { 2811 mapPointFromSelfToChild(v, xy, null); 2812 } 2813 2814 /* 2815 * 2816 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2817 * coordinate space. The argument xy is modified with the return result. 2818 * 2819 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2820 * computing it itself; we use this to avoid redundant matrix inversions in 2821 * findMatchingPageForDragOver 2822 * 2823 */ 2824 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2825 if (cachedInverseMatrix == null) { 2826 v.getMatrix().invert(mTempInverseMatrix); 2827 cachedInverseMatrix = mTempInverseMatrix; 2828 } 2829 xy[0] = xy[0] + mScrollX - v.getLeft(); 2830 xy[1] = xy[1] + mScrollY - v.getTop(); 2831 cachedInverseMatrix.mapPoints(xy); 2832 } 2833 2834 /* 2835 * 2836 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2837 * the parent View's coordinate space. The argument xy is modified with the return result. 2838 * 2839 */ 2840 void mapPointFromChildToSelf(View v, float[] xy) { 2841 v.getMatrix().mapPoints(xy); 2842 xy[0] -= (mScrollX - v.getLeft()); 2843 xy[1] -= (mScrollY - v.getTop()); 2844 } 2845 2846 static private float squaredDistance(float[] point1, float[] point2) { 2847 float distanceX = point1[0] - point2[0]; 2848 float distanceY = point2[1] - point2[1]; 2849 return distanceX * distanceX + distanceY * distanceY; 2850 } 2851 2852 /* 2853 * 2854 * Returns true if the passed CellLayout cl overlaps with dragView 2855 * 2856 */ 2857 boolean overlaps(CellLayout cl, DragView dragView, 2858 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2859 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2860 final float[] draggedItemTopLeft = mTempDragCoordinates; 2861 draggedItemTopLeft[0] = dragViewX; 2862 draggedItemTopLeft[1] = dragViewY; 2863 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2864 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2865 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2866 2867 // Transform the dragged item's top left coordinates 2868 // to the CellLayout's local coordinates 2869 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2870 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2871 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2872 2873 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2874 // Transform the dragged item's bottom right coordinates 2875 // to the CellLayout's local coordinates 2876 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2877 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2878 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2879 2880 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2881 float overlap = (overlapRegionRight - overlapRegionLeft) * 2882 (overlapRegionBottom - overlapRegionTop); 2883 if (overlap > 0) { 2884 return true; 2885 } 2886 } 2887 } 2888 return false; 2889 } 2890 2891 /* 2892 * 2893 * This method returns the CellLayout that is currently being dragged to. In order to drag 2894 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2895 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2896 * 2897 * Return null if no CellLayout is currently being dragged over 2898 * 2899 */ 2900 private CellLayout findMatchingPageForDragOver( 2901 DragView dragView, int originX, int originY, int offsetX, int offsetY) { 2902 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2903 // with the item being dragged and then choose the one that's closest to the touch point 2904 final int screenCount = getChildCount(); 2905 CellLayout bestMatchingScreen = null; 2906 float smallestDistSoFar = Float.MAX_VALUE; 2907 2908 for (int i = 0; i < screenCount; i++) { 2909 CellLayout cl = (CellLayout)getChildAt(i); 2910 2911 final float[] touchXy = mTempTouchCoordinates; 2912 touchXy[0] = originX + offsetX; 2913 touchXy[1] = originY + offsetY; 2914 2915 // Transform the touch coordinates to the CellLayout's local coordinates 2916 // If the touch point is within the bounds of the cell layout, we can return immediately 2917 cl.getMatrix().invert(mTempInverseMatrix); 2918 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2919 2920 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2921 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2922 return cl; 2923 } 2924 2925 if (overlaps(cl, dragView, originX, originY, mTempInverseMatrix)) { 2926 // Get the center of the cell layout in screen coordinates 2927 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2928 cellLayoutCenter[0] = cl.getWidth()/2; 2929 cellLayoutCenter[1] = cl.getHeight()/2; 2930 mapPointFromChildToSelf(cl, cellLayoutCenter); 2931 2932 touchXy[0] = originX + offsetX; 2933 touchXy[1] = originY + offsetY; 2934 2935 // Calculate the distance between the center of the CellLayout 2936 // and the touch point 2937 float dist = squaredDistance(touchXy, cellLayoutCenter); 2938 2939 if (dist < smallestDistSoFar) { 2940 smallestDistSoFar = dist; 2941 bestMatchingScreen = cl; 2942 } 2943 } 2944 } 2945 return bestMatchingScreen; 2946 } 2947 2948 // This is used to compute the visual center of the dragView. This point is then 2949 // used to visualize drop locations and determine where to drop an item. The idea is that 2950 // the visual center represents the user's interpretation of where the item is, and hence 2951 // is the appropriate point to use when determining drop location. 2952 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2953 DragView dragView, float[] recycle) { 2954 float res[]; 2955 if (recycle == null) { 2956 res = new float[2]; 2957 } else { 2958 res = recycle; 2959 } 2960 2961 // First off, the drag view has been shifted in a way that is not represented in the 2962 // x and y values or the x/yOffsets. Here we account for that shift. 2963 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2964 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2965 2966 // These represent the visual top and left of drag view if a dragRect was provided. 2967 // If a dragRect was not provided, then they correspond to the actual view left and 2968 // top, as the dragRect is in that case taken to be the entire dragView. 2969 // R.dimen.dragViewOffsetY. 2970 int left = x - xOffset; 2971 int top = y - yOffset; 2972 2973 // In order to find the visual center, we shift by half the dragRect 2974 res[0] = left + dragView.getDragRegion().width() / 2; 2975 res[1] = top + dragView.getDragRegion().height() / 2; 2976 2977 return res; 2978 } 2979 2980 public void onDragOver(DragSource source, int x, int y, int xOffset, int yOffset, 2981 DragView dragView, Object dragInfo) { 2982 // When touch is inside the scroll area, skip dragOver actions for the current screen 2983 if (!mInScrollArea) { 2984 CellLayout layout; 2985 int left = x - xOffset; 2986 int top = y - yOffset; 2987 2988 mDragViewVisualCenter = getDragViewVisualCenter(x, y, xOffset, yOffset, dragView, 2989 mDragViewVisualCenter); 2990 2991 boolean shrunken = mIsSmall || mIsInUnshrinkAnimation; 2992 if (shrunken) { 2993 mLastDragView = dragView; 2994 mLastDragOriginX = left; 2995 mLastDragOriginY = top; 2996 mLastDragXOffset = xOffset; 2997 mLastDragYOffset = yOffset; 2998 layout = findMatchingPageForDragOver(dragView, left, top, xOffset, yOffset); 2999 3000 if (layout != null && layout != mDragTargetLayout) { 3001 if (mDragTargetLayout != null) { 3002 mDragTargetLayout.setIsDragOverlapping(false); 3003 mSpringLoadedDragController.onDragExit(); 3004 } 3005 mDragTargetLayout = layout; 3006 3007 // Workaround the fact that we don't actually want spring-loaded mode in phone 3008 // UI yet. 3009 if (LauncherApplication.isScreenLarge()) { 3010 // In spring-loaded mode, we still want the user to be able to hover over a 3011 // full screen (which is traditionally set to not accept drops) if they want 3012 // to get to pages beyond the screen that is full. 3013 boolean allowDragOver = (mDragTargetLayout != null) && 3014 (mDragTargetLayout.getAcceptsDrops() || 3015 (mShrinkState == ShrinkState.SPRING_LOADED)); 3016 if (allowDragOver) { 3017 mDragTargetLayout.setIsDragOverlapping(true); 3018 mSpringLoadedDragController.onDragEnter( 3019 mDragTargetLayout, mShrinkState == ShrinkState.SPRING_LOADED); 3020 } 3021 } 3022 } 3023 } else { 3024 layout = getCurrentDropLayout(); 3025 if (layout != mDragTargetLayout) { 3026 if (mDragTargetLayout != null) { 3027 mDragTargetLayout.onDragExit(); 3028 } 3029 layout.onDragEnter(); 3030 mDragTargetLayout = layout; 3031 } 3032 } 3033 if (!shrunken || mShrinkState == ShrinkState.SPRING_LOADED) { 3034 layout = getCurrentDropLayout(); 3035 3036 final ItemInfo item = (ItemInfo)dragInfo; 3037 if (dragInfo instanceof LauncherAppWidgetInfo) { 3038 LauncherAppWidgetInfo widgetInfo = (LauncherAppWidgetInfo)dragInfo; 3039 3040 if (widgetInfo.spanX == -1) { 3041 // Calculate the grid spans needed to fit this widget 3042 int[] spans = layout.rectToCell( 3043 widgetInfo.minWidth, widgetInfo.minHeight, null); 3044 item.spanX = spans[0]; 3045 item.spanY = spans[1]; 3046 } 3047 } 3048 3049 if (mDragTargetLayout != null) { 3050 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 3051 // We want the point to be mapped to the dragTarget. 3052 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 3053 ItemInfo info = (ItemInfo) dragInfo; 3054 3055 if (!willCreateUserFolder(info, mDragTargetLayout, 3056 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1])) { 3057 mIsDraggingOverIcon = false; 3058 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 3059 (int) mDragViewVisualCenter[0], 3060 (int) mDragViewVisualCenter[1], 3061 item.spanX, item.spanY); 3062 } else if (!mIsDraggingOverIcon) { 3063 mIsDraggingOverIcon = true; 3064 mDragTargetLayout.clearDragOutlines(); 3065 } 3066 } 3067 } 3068 } 3069 } 3070 3071 private void doDragExit() { 3072 mWasSpringLoadedOnDragExit = mShrinkState == ShrinkState.SPRING_LOADED; 3073 if (mDragTargetLayout != null) { 3074 mDragTargetLayout.onDragExit(); 3075 } 3076 if (!mIsPageMoving) { 3077 hideOutlines(); 3078 } 3079 if (mShrinkState == ShrinkState.SPRING_LOADED) { 3080 mLauncher.exitSpringLoadedDragMode(); 3081 } 3082 clearAllHovers(); 3083 } 3084 3085 public void onDragExit(DragSource source, int x, int y, int xOffset, 3086 int yOffset, DragView dragView, Object dragInfo) { 3087 doDragExit(); 3088 } 3089 3090 @Override 3091 public void getHitRect(Rect outRect) { 3092 // We want the workspace to have the whole area of the display (it will find the correct 3093 // cell layout to drop to in the existing drag/drop logic. 3094 final Display d = mLauncher.getWindowManager().getDefaultDisplay(); 3095 outRect.set(0, 0, d.getWidth(), d.getHeight()); 3096 } 3097 3098 /** 3099 * Add the item specified by dragInfo to the given layout. 3100 * @return true if successful 3101 */ 3102 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 3103 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 3104 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 3105 return true; 3106 } 3107 mLauncher.showOutOfSpaceMessage(); 3108 return false; 3109 } 3110 3111 private void onDropExternal(int[] touchXY, Object dragInfo, 3112 CellLayout cellLayout, boolean insertAtFirst) { 3113 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 3114 } 3115 3116 /** 3117 * Drop an item that didn't originate on one of the workspace screens. 3118 * It may have come from Launcher (e.g. from all apps or customize), or it may have 3119 * come from another app altogether. 3120 * 3121 * NOTE: This can also be called when we are outside of a drag event, when we want 3122 * to add an item to one of the workspace screens. 3123 */ 3124 private void onDropExternal(int[] touchXY, Object dragInfo, 3125 CellLayout cellLayout, boolean insertAtFirst, DragView dragView) { 3126 int screen = indexOfChild(cellLayout); 3127 if (dragInfo instanceof PendingAddItemInfo) { 3128 PendingAddItemInfo info = (PendingAddItemInfo) dragInfo; 3129 // When dragging and dropping from customization tray, we deal with creating 3130 // widgets/shortcuts/folders in a slightly different way 3131 switch (info.itemType) { 3132 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 3133 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) info, screen, touchXY); 3134 break; 3135 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3136 mLauncher.processShortcutFromDrop(info.componentName, screen, touchXY); 3137 break; 3138 default: 3139 throw new IllegalStateException("Unknown item type: " + info.itemType); 3140 } 3141 cellLayout.onDragExit(); 3142 } else { 3143 // This is for other drag/drop cases, like dragging from All Apps 3144 ItemInfo info = (ItemInfo) dragInfo; 3145 View view = null; 3146 3147 switch (info.itemType) { 3148 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 3149 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3150 if (info.container == NO_ID && info instanceof ApplicationInfo) { 3151 // Came from all apps -- make a copy 3152 info = new ShortcutInfo((ApplicationInfo) info); 3153 } 3154 view = mLauncher.createShortcut(R.layout.application, cellLayout, 3155 (ShortcutInfo) info); 3156 break; 3157 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 3158 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, 3159 cellLayout, (FolderInfo) info, mIconCache); 3160 break; 3161 default: 3162 throw new IllegalStateException("Unknown item type: " + info.itemType); 3163 } 3164 3165 // If the item being dropped is a shortcut and the nearest drop cell also contains 3166 // a shortcut, then create a folder with the two shortcuts. 3167 if (touchXY != null && createUserFolderIfNecessary(view, cellLayout, touchXY[0], 3168 touchXY[1], true)) { 3169 return; 3170 } 3171 3172 mTargetCell = new int[2]; 3173 if (touchXY != null) { 3174 // when dragging and dropping, just find the closest free spot 3175 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], 1, 1, null, cellLayout, 3176 mTargetCell); 3177 } else { 3178 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3179 } 3180 addInScreen(view, indexOfChild(cellLayout), mTargetCell[0], 3181 mTargetCell[1], info.spanX, info.spanY, insertAtFirst); 3182 boolean animateDrop = !mWasSpringLoadedOnDragExit; 3183 cellLayout.onDropChild(view, animateDrop); 3184 cellLayout.animateDrop(); 3185 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 3186 cellLayout.getChildrenLayout().measureChild(view); 3187 3188 if (dragView != null) { 3189 // we have the visual center of the drag view, we need to find the actual 3190 // left and top of the dragView. 3191 int loc[] = new int[2]; 3192 getViewLocationRelativeToSelf(dragView, loc); 3193 setPositionForDropAnimation(dragView, loc[0], loc[1], cellLayout, view); 3194 } 3195 3196 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 3197 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 3198 lp.cellX, lp.cellY); 3199 } 3200 } 3201 3202 /** 3203 * Return the current {@link CellLayout}, correctly picking the destination 3204 * screen while a scroll is in progress. 3205 */ 3206 public CellLayout getCurrentDropLayout() { 3207 return (CellLayout) getChildAt(mNextPage == INVALID_PAGE ? mCurrentPage : mNextPage); 3208 } 3209 3210 /** 3211 * Return the current CellInfo describing our current drag; this method exists 3212 * so that Launcher can sync this object with the correct info when the activity is created/ 3213 * destroyed 3214 * 3215 */ 3216 public CellLayout.CellInfo getDragInfo() { 3217 return mDragInfo; 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[] findNearestVacantArea(int pixelX, int pixelY, 3226 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 3227 return layout.findNearestVacantArea( 3228 pixelX, pixelY, spanX, spanY, ignoreView, recycle); 3229 } 3230 3231 /** 3232 * Calculate the nearest cell where the given object would be dropped. 3233 * 3234 * pixelX and pixelY should be in the coordinate system of layout 3235 */ 3236 private int[] findNearestArea(int pixelX, int pixelY, 3237 int spanX, int spanY, CellLayout layout, int[] recycle) { 3238 return layout.findNearestArea( 3239 pixelX, pixelY, spanX, spanY, recycle); 3240 } 3241 3242 void setLauncher(Launcher launcher) { 3243 mLauncher = launcher; 3244 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3245 3246 mCustomizationDrawer = mLauncher.findViewById(R.id.customization_drawer); 3247 if (mCustomizationDrawer != null) { 3248 mCustomizationDrawerContent = 3249 mCustomizationDrawer.findViewById(com.android.internal.R.id.tabcontent); 3250 } 3251 } 3252 3253 public void setDragController(DragController dragController) { 3254 mDragController = dragController; 3255 } 3256 3257 /** 3258 * Called at the end of a drag which originated on the workspace. 3259 */ 3260 public void onDropCompleted(View target, Object dragInfo, boolean success) { 3261 if (success) { 3262 if (target != this && mDragInfo != null) { 3263 final CellLayout cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3264 cellLayout.removeView(mDragInfo.cell); 3265 if (mDragInfo.cell instanceof DropTarget) { 3266 mDragController.removeDropTarget((DropTarget)mDragInfo.cell); 3267 } 3268 // final Object tag = mDragInfo.cell.getTag(); 3269 } 3270 } else if (mDragInfo != null) { 3271 // NOTE: When 'success' is true, onDragExit is called by the DragController before 3272 // calling onDropCompleted(). We call it ourselves here, but maybe this should be 3273 // moved into DragController.cancelDrag(). 3274 doDragExit(); 3275 ((CellLayout) getChildAt(mDragInfo.screen)).onDropChild(mDragInfo.cell, false); 3276 } 3277 mLauncher.unlockScreenOrientation(); 3278 mDragOutline = null; 3279 mDragInfo = null; 3280 } 3281 3282 @Override 3283 public void onDragViewVisible() { 3284 ((View) mDragInfo.cell).setVisibility(View.GONE); 3285 } 3286 3287 public boolean isDropEnabled() { 3288 return true; 3289 } 3290 3291 @Override 3292 protected void onRestoreInstanceState(Parcelable state) { 3293 super.onRestoreInstanceState(state); 3294 Launcher.setScreen(mCurrentPage); 3295 } 3296 3297 @Override 3298 public void scrollLeft() { 3299 if (!mIsSmall && !mIsInUnshrinkAnimation) { 3300 super.scrollLeft(); 3301 } 3302 } 3303 3304 @Override 3305 public void scrollRight() { 3306 if (!mIsSmall && !mIsInUnshrinkAnimation) { 3307 super.scrollRight(); 3308 } 3309 } 3310 3311 @Override 3312 public void onEnterScrollArea(int direction) { 3313 if (!mIsSmall && !mIsInUnshrinkAnimation) { 3314 mInScrollArea = true; 3315 mPendingScrollDirection = direction; 3316 3317 final int page = mCurrentPage + (direction == DragController.SCROLL_LEFT ? -1 : 1); 3318 final CellLayout layout = (CellLayout) getChildAt(page); 3319 3320 if (layout != null) { 3321 layout.setIsDragOverlapping(true); 3322 3323 if (mDragTargetLayout != null) { 3324 mDragTargetLayout.onDragExit(); 3325 mDragTargetLayout = null; 3326 } 3327 // In portrait, need to redraw the edge glow when entering the scroll area 3328 if (getHeight() > getWidth()) { 3329 invalidate(); 3330 } 3331 } 3332 } 3333 } 3334 3335 private void clearAllHovers() { 3336 final int childCount = getChildCount(); 3337 for (int i = 0; i < childCount; i++) { 3338 ((CellLayout) getChildAt(i)).setIsDragOverlapping(false); 3339 } 3340 mSpringLoadedDragController.onDragExit(); 3341 3342 // In portrait, workspace is responsible for drawing the edge glow on adjacent pages, 3343 // so we need to redraw the workspace when this may have changed. 3344 if (getHeight() > getWidth()) { 3345 invalidate(); 3346 } 3347 } 3348 3349 @Override 3350 public void onExitScrollArea() { 3351 if (mInScrollArea) { 3352 mInScrollArea = false; 3353 mPendingScrollDirection = DragController.SCROLL_NONE; 3354 clearAllHovers(); 3355 } 3356 } 3357 3358 public Folder getFolderForTag(Object tag) { 3359 final int screenCount = getChildCount(); 3360 for (int screen = 0; screen < screenCount; screen++) { 3361 ViewGroup currentScreen = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 3362 int count = currentScreen.getChildCount(); 3363 for (int i = 0; i < count; i++) { 3364 View child = currentScreen.getChildAt(i); 3365 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 3366 if (lp.cellHSpan == 4 && lp.cellVSpan == 4 && child instanceof Folder) { 3367 Folder f = (Folder) child; 3368 if (f.getInfo() == tag && f.getInfo().opened) { 3369 return f; 3370 } 3371 } 3372 } 3373 } 3374 return null; 3375 } 3376 3377 public View getViewForTag(Object tag) { 3378 int screenCount = getChildCount(); 3379 for (int screen = 0; screen < screenCount; screen++) { 3380 ViewGroup currentScreen = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 3381 int count = currentScreen.getChildCount(); 3382 for (int i = 0; i < count; i++) { 3383 View child = currentScreen.getChildAt(i); 3384 if (child.getTag() == tag) { 3385 return child; 3386 } 3387 } 3388 } 3389 return null; 3390 } 3391 3392 void clearDropTargets() { 3393 final int screenCount = getChildCount(); 3394 3395 for (int i = 0; i < screenCount; i++) { 3396 final CellLayout layoutParent = (CellLayout) getChildAt(i); 3397 final ViewGroup layout = layoutParent.getChildrenLayout(); 3398 int childCount = layout.getChildCount(); 3399 for (int j = 0; j < childCount; j++) { 3400 View v = layout.getChildAt(j); 3401 if (v instanceof DropTarget) { 3402 mDragController.removeDropTarget((DropTarget) v); 3403 } 3404 } 3405 } 3406 } 3407 3408 void removeItems(final ArrayList<ApplicationInfo> apps) { 3409 final int screenCount = getChildCount(); 3410 final PackageManager manager = getContext().getPackageManager(); 3411 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3412 3413 final HashSet<String> packageNames = new HashSet<String>(); 3414 final int appCount = apps.size(); 3415 for (int i = 0; i < appCount; i++) { 3416 packageNames.add(apps.get(i).componentName.getPackageName()); 3417 } 3418 3419 for (int i = 0; i < screenCount; i++) { 3420 final CellLayout layoutParent = (CellLayout) getChildAt(i); 3421 final ViewGroup layout = layoutParent.getChildrenLayout(); 3422 3423 // Avoid ANRs by treating each screen separately 3424 post(new Runnable() { 3425 public void run() { 3426 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3427 childrenToRemove.clear(); 3428 3429 int childCount = layout.getChildCount(); 3430 for (int j = 0; j < childCount; j++) { 3431 final View view = layout.getChildAt(j); 3432 Object tag = view.getTag(); 3433 3434 if (tag instanceof ShortcutInfo) { 3435 final ShortcutInfo info = (ShortcutInfo) tag; 3436 final Intent intent = info.intent; 3437 final ComponentName name = intent.getComponent(); 3438 3439 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3440 for (String packageName: packageNames) { 3441 if (packageName.equals(name.getPackageName())) { 3442 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3443 childrenToRemove.add(view); 3444 } 3445 } 3446 } 3447 } else if (tag instanceof FolderInfo) { 3448 final FolderInfo info = (FolderInfo) tag; 3449 final ArrayList<ShortcutInfo> contents = info.contents; 3450 final ArrayList<ShortcutInfo> toRemove = new ArrayList<ShortcutInfo>(1); 3451 final int contentsCount = contents.size(); 3452 boolean removedFromFolder = false; 3453 3454 for (int k = 0; k < contentsCount; k++) { 3455 final ShortcutInfo appInfo = contents.get(k); 3456 final Intent intent = appInfo.intent; 3457 final ComponentName name = intent.getComponent(); 3458 3459 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3460 for (String packageName: packageNames) { 3461 if (packageName.equals(name.getPackageName())) { 3462 toRemove.add(appInfo); 3463 LauncherModel.deleteItemFromDatabase(mLauncher, appInfo); 3464 removedFromFolder = true; 3465 } 3466 } 3467 } 3468 } 3469 3470 contents.removeAll(toRemove); 3471 if (removedFromFolder) { 3472 final Folder folder = getOpenFolder(); 3473 if (folder != null) 3474 folder.notifyDataSetChanged(); 3475 } 3476 } else if (tag instanceof LauncherAppWidgetInfo) { 3477 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3478 final AppWidgetProviderInfo provider = 3479 widgets.getAppWidgetInfo(info.appWidgetId); 3480 if (provider != null) { 3481 for (String packageName: packageNames) { 3482 if (packageName.equals(provider.provider.getPackageName())) { 3483 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3484 childrenToRemove.add(view); 3485 } 3486 } 3487 } 3488 } 3489 } 3490 3491 childCount = childrenToRemove.size(); 3492 for (int j = 0; j < childCount; j++) { 3493 View child = childrenToRemove.get(j); 3494 // Note: We can not remove the view directly from CellLayoutChildren as this 3495 // does not re-mark the spaces as unoccupied. 3496 layoutParent.removeViewInLayout(child); 3497 if (child instanceof DropTarget) { 3498 mDragController.removeDropTarget((DropTarget)child); 3499 } 3500 } 3501 3502 if (childCount > 0) { 3503 layout.requestLayout(); 3504 layout.invalidate(); 3505 } 3506 } 3507 }); 3508 } 3509 } 3510 3511 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3512 final int screenCount = getChildCount(); 3513 for (int i = 0; i < screenCount; i++) { 3514 final ViewGroup layout = ((CellLayout) getChildAt(i)).getChildrenLayout(); 3515 int childCount = layout.getChildCount(); 3516 for (int j = 0; j < childCount; j++) { 3517 final View view = layout.getChildAt(j); 3518 Object tag = view.getTag(); 3519 if (tag instanceof ShortcutInfo) { 3520 ShortcutInfo info = (ShortcutInfo)tag; 3521 // We need to check for ACTION_MAIN otherwise getComponent() might 3522 // return null for some shortcuts (for instance, for shortcuts to 3523 // web pages.) 3524 final Intent intent = info.intent; 3525 final ComponentName name = intent.getComponent(); 3526 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3527 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3528 final int appCount = apps.size(); 3529 for (int k = 0; k < appCount; k++) { 3530 ApplicationInfo app = apps.get(k); 3531 if (app.componentName.equals(name)) { 3532 info.setIcon(mIconCache.getIcon(info.intent)); 3533 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 3534 new FastBitmapDrawable(info.getIcon(mIconCache)), 3535 null, null); 3536 } 3537 } 3538 } 3539 } 3540 } 3541 } 3542 } 3543 3544 void moveToDefaultScreen(boolean animate) { 3545 if (mIsSmall || mIsInUnshrinkAnimation) { 3546 mLauncher.showWorkspace(animate, (CellLayout)getChildAt(mDefaultPage)); 3547 } else if (animate) { 3548 snapToPage(mDefaultPage); 3549 } else { 3550 setCurrentPage(mDefaultPage); 3551 } 3552 getChildAt(mDefaultPage).requestFocus(); 3553 } 3554 3555 void setIndicators(Drawable previous, Drawable next) { 3556 mPreviousIndicator = previous; 3557 mNextIndicator = next; 3558 previous.setLevel(mCurrentPage); 3559 next.setLevel(mCurrentPage); 3560 } 3561 3562 @Override 3563 public void syncPages() { 3564 } 3565 3566 @Override 3567 public void syncPageItems(int page) { 3568 } 3569 3570} 3571