Workspace.java revision 6639687cd67bab1aeef2a75e5c6bc458b20dc082
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.pm.ProviderInfo; 42import android.content.res.Resources; 43import android.content.res.TypedArray; 44import android.graphics.Bitmap; 45import android.graphics.Camera; 46import android.graphics.Canvas; 47import android.graphics.Matrix; 48import android.graphics.Paint; 49import android.graphics.Rect; 50import android.graphics.RectF; 51import android.graphics.Region.Op; 52import android.graphics.drawable.Drawable; 53import android.net.Uri; 54import android.os.IBinder; 55import android.os.Parcelable; 56import android.util.AttributeSet; 57import android.util.Log; 58import android.util.Pair; 59import android.view.Display; 60import android.view.DragEvent; 61import android.view.MotionEvent; 62import android.view.View; 63import android.view.ViewGroup; 64import android.view.animation.DecelerateInterpolator; 65import android.widget.TabHost; 66import android.widget.TabWidget; 67import android.widget.TextView; 68import android.widget.Toast; 69 70import com.android.launcher.R; 71import com.android.launcher2.InstallWidgetReceiver.WidgetMimeTypeHandlerData; 72 73/** 74 * The workspace is a wide area with a wallpaper and a finite number of pages. 75 * Each page contains a number of icons, folders or widgets the user can 76 * interact with. A workspace is meant to be used with a fixed width only. 77 */ 78public class Workspace extends SmoothPagedView 79 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 80 View.OnClickListener { 81 @SuppressWarnings({"UnusedDeclaration"}) 82 private static final String TAG = "Launcher.Workspace"; 83 84 // This is how much the workspace shrinks when we enter all apps or 85 // customization mode 86 private static final float SHRINK_FACTOR = 0.16f; 87 88 // How much the screens shrink when we enter spring loaded drag mode 89 private static final float SPRING_LOADED_DRAG_SHRINK_FACTOR = 0.7f; 90 91 // Y rotation to apply to the workspace screens 92 private static final float WORKSPACE_ROTATION = 12.5f; 93 94 // These are extra scale factors to apply to the mini home screens 95 // so as to achieve the desired transform 96 private static final float EXTRA_SCALE_FACTOR_0 = 0.972f; 97 private static final float EXTRA_SCALE_FACTOR_1 = 1.0f; 98 private static final float EXTRA_SCALE_FACTOR_2 = 1.10f; 99 100 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 101 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 102 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 103 104 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 105 private static final int BACKGROUND_FADE_IN_DURATION = 350; 106 107 // These animators are used to fade the children's outlines 108 private ObjectAnimator mChildrenOutlineFadeInAnimation; 109 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 110 private float mChildrenOutlineAlpha = 0; 111 112 // These properties refer to the background protection gradient used for AllApps and Customize 113 private ValueAnimator mBackgroundFadeInAnimation; 114 private ValueAnimator mBackgroundFadeOutAnimation; 115 private Drawable mBackground; 116 private Drawable mCustomizeTrayBackground; 117 boolean mDrawBackground = true; 118 private boolean mDrawCustomizeTrayBackground; 119 private float mBackgroundAlpha = 0; 120 private float mOverScrollMaxBackgroundAlpha = 0.0f; 121 private int mOverScrollPageIndex = -1; 122 123 private View mCustomizationDrawer; 124 private View mCustomizationDrawerContent; 125 private int[] mCustomizationDrawerPos = new int[2]; 126 private float[] mCustomizationDrawerTransformedPos = new float[2]; 127 128 private final WallpaperManager mWallpaperManager; 129 private IBinder mWindowToken; 130 131 private int mDefaultPage; 132 133 private boolean mIsDragInProcess = 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[] mTempOriginXY = new float[2]; 160 private float[] mTempDragCoordinates = new float[2]; 161 private float[] mTempTouchCoordinates = new float[2]; 162 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 163 private float[] mTempDragBottomRightCoordinates = new float[2]; 164 private Matrix mTempInverseMatrix = new Matrix(); 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 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 227 private float mXDown; 228 private float mYDown; 229 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 230 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 231 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 232 233 /** 234 * Used to inflate the Workspace from XML. 235 * 236 * @param context The application's context. 237 * @param attrs The attributes set containing the Workspace's customization values. 238 */ 239 public Workspace(Context context, AttributeSet attrs) { 240 this(context, attrs, 0); 241 } 242 243 /** 244 * Used to inflate the Workspace from XML. 245 * 246 * @param context The application's context. 247 * @param attrs The attributes set containing the Workspace's customization values. 248 * @param defStyle Unused. 249 */ 250 public Workspace(Context context, AttributeSet attrs, int defStyle) { 251 super(context, attrs, defStyle); 252 mContentIsRefreshable = false; 253 254 if (!LauncherApplication.isScreenXLarge()) { 255 mFadeInAdjacentScreens = false; 256 } 257 258 mWallpaperManager = WallpaperManager.getInstance(context); 259 260 TypedArray a = context.obtainStyledAttributes(attrs, 261 R.styleable.Workspace, defStyle, 0); 262 int cellCountX = a.getInt(R.styleable.Workspace_cellCountX, DEFAULT_CELL_COUNT_X); 263 int cellCountY = a.getInt(R.styleable.Workspace_cellCountY, DEFAULT_CELL_COUNT_Y); 264 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 265 a.recycle(); 266 267 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 268 setHapticFeedbackEnabled(false); 269 270 initWorkspace(); 271 272 // Disable multitouch across the workspace/all apps/customize tray 273 setMotionEventSplittingEnabled(true); 274 } 275 276 /** 277 * Initializes various states for this workspace. 278 */ 279 protected void initWorkspace() { 280 Context context = getContext(); 281 mCurrentPage = mDefaultPage; 282 Launcher.setScreen(mCurrentPage); 283 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 284 mIconCache = app.getIconCache(); 285 mExternalDragOutlinePaint.setAntiAlias(true); 286 setWillNotDraw(false); 287 288 try { 289 final Resources res = getResources(); 290 mBackground = res.getDrawable(R.drawable.all_apps_bg_gradient); 291 mCustomizeTrayBackground = res.getDrawable(R.drawable.customize_bg_gradient); 292 } catch (Resources.NotFoundException e) { 293 // In this case, we will skip drawing background protection 294 } 295 296 mUnshrinkAnimationListener = new AnimatorListenerAdapter() { 297 @Override 298 public void onAnimationStart(Animator animation) { 299 mIsInUnshrinkAnimation = true; 300 } 301 302 @Override 303 public void onAnimationEnd(Animator animation) { 304 mIsInUnshrinkAnimation = false; 305 mSyncWallpaperOffsetWithScroll = true; 306 if (mShrinkState == ShrinkState.SPRING_LOADED) { 307 View layout = null; 308 if (mLastDragView != null) { 309 layout = findMatchingPageForDragOver(mLastDragView, mLastDragOriginX, 310 mLastDragOriginY, mLastDragXOffset, mLastDragYOffset); 311 } 312 mSpringLoadedDragController.onEnterSpringLoadedMode(layout == null); 313 } else { 314 mDrawCustomizeTrayBackground = false; 315 } 316 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 317 mAnimator = null; 318 enableChildrenLayers(false); 319 } 320 }; 321 mShrinkAnimationListener = new AnimatorListenerAdapter() { 322 @Override 323 public void onAnimationStart(Animator animation) { 324 enableChildrenLayers(true); 325 } 326 @Override 327 public void onAnimationEnd(Animator animation) { 328 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 329 mAnimator = null; 330 } 331 }; 332 mSnapVelocity = 600; 333 mWallpaperOffset = new WallpaperOffsetInterpolator(); 334 } 335 336 @Override 337 protected int getScrollMode() { 338 if (LauncherApplication.isScreenXLarge()) { 339 return SmoothPagedView.X_LARGE_MODE; 340 } else { 341 return SmoothPagedView.DEFAULT_MODE; 342 } 343 } 344 345 private void onAddView(View child) { 346 if (!(child instanceof CellLayout)) { 347 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 348 } 349 ((CellLayout) child).setOnInterceptTouchListener(this); 350 child.setOnClickListener(this); 351 child.setClickable(true); 352 } 353 @Override 354 public void addView(View child, int index, LayoutParams params) { 355 onAddView(child); 356 super.addView(child, index, params); 357 } 358 359 @Override 360 public void addView(View child) { 361 onAddView(child); 362 super.addView(child); 363 } 364 365 @Override 366 public void addView(View child, int index) { 367 onAddView(child); 368 super.addView(child, index); 369 } 370 371 @Override 372 public void addView(View child, int width, int height) { 373 onAddView(child); 374 super.addView(child, width, height); 375 } 376 377 @Override 378 public void addView(View child, LayoutParams params) { 379 onAddView(child); 380 super.addView(child, params); 381 } 382 383 /** 384 * @return The open folder on the current screen, or null if there is none 385 */ 386 Folder getOpenFolder() { 387 ViewGroup currentPage = ((CellLayout) getChildAt(mCurrentPage)).getChildrenLayout(); 388 int count = currentPage.getChildCount(); 389 for (int i = 0; i < count; i++) { 390 View child = currentPage.getChildAt(i); 391 if (child instanceof Folder) { 392 Folder folder = (Folder) child; 393 if (folder.getInfo().opened) 394 return folder; 395 } 396 } 397 return null; 398 } 399 400 ArrayList<Folder> getOpenFolders() { 401 final int screenCount = getChildCount(); 402 ArrayList<Folder> folders = new ArrayList<Folder>(screenCount); 403 404 for (int screen = 0; screen < screenCount; screen++) { 405 ViewGroup currentPage = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 406 int count = currentPage.getChildCount(); 407 for (int i = 0; i < count; i++) { 408 View child = currentPage.getChildAt(i); 409 if (child instanceof Folder) { 410 Folder folder = (Folder) child; 411 if (folder.getInfo().opened) 412 folders.add(folder); 413 break; 414 } 415 } 416 } 417 return folders; 418 } 419 420 boolean isTouchActive() { 421 return mTouchState != TOUCH_STATE_REST; 422 } 423 424 /** 425 * Adds the specified child in the specified screen. The position and dimension of 426 * the child are defined by x, y, spanX and spanY. 427 * 428 * @param child The child to add in one of the workspace's screens. 429 * @param screen The screen in which to add the child. 430 * @param x The X position of the child in the screen's grid. 431 * @param y The Y position of the child in the screen's grid. 432 * @param spanX The number of cells spanned horizontally by the child. 433 * @param spanY The number of cells spanned vertically by the child. 434 */ 435 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY) { 436 addInScreen(child, screen, x, y, spanX, spanY, false); 437 } 438 439 void addInFullScreen(View child, int screen) { 440 addInScreen(child, screen, 0, 0, -1, -1); 441 } 442 443 /** 444 * Adds the specified child in the specified screen. The position and dimension of 445 * the child are defined by x, y, spanX and spanY. 446 * 447 * @param child The child to add in one of the workspace's screens. 448 * @param screen The screen in which to add the child. 449 * @param x The X position of the child in the screen's grid. 450 * @param y The Y position of the child in the screen's grid. 451 * @param spanX The number of cells spanned horizontally by the child. 452 * @param spanY The number of cells spanned vertically by the child. 453 * @param insert When true, the child is inserted at the beginning of the children list. 454 */ 455 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY, boolean insert) { 456 if (screen < 0 || screen >= getChildCount()) { 457 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 458 + " (was " + screen + "); skipping child"); 459 return; 460 } 461 462 final CellLayout group = (CellLayout) getChildAt(screen); 463 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 464 if (lp == null) { 465 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 466 } else { 467 lp.cellX = x; 468 lp.cellY = y; 469 lp.cellHSpan = spanX; 470 lp.cellVSpan = spanY; 471 } 472 473 // Get the canonical child id to uniquely represent this view in this screen 474 int childId = LauncherModel.getCellLayoutChildId(-1, screen, x, y, spanX, spanY); 475 boolean markCellsAsOccupied = !(child instanceof Folder); 476 if (!group.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 477 // TODO: This branch occurs when the workspace is adding views 478 // outside of the defined grid 479 // maybe we should be deleting these items from the LauncherModel? 480 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 481 } 482 483 if (!(child instanceof Folder)) { 484 child.setHapticFeedbackEnabled(false); 485 child.setOnLongClickListener(mLongClickListener); 486 } 487 if (child instanceof DropTarget) { 488 mDragController.addDropTarget((DropTarget) child); 489 } 490 } 491 492 /** 493 * Check if the point (x, y) hits a given page. 494 */ 495 private boolean hitsPage(int index, float x, float y) { 496 final View page = getChildAt(index); 497 if (page != null) { 498 float[] localXY = { x, y }; 499 mapPointFromSelfToChild(page, localXY); 500 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 501 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 502 } 503 return false; 504 } 505 506 @Override 507 protected boolean hitsPreviousPage(float x, float y) { 508 // mNextPage is set to INVALID_PAGE whenever we are stationary. 509 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 510 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 511 return hitsPage(current - 1, x, y); 512 } 513 514 @Override 515 protected boolean hitsNextPage(float x, float y) { 516 // mNextPage is set to INVALID_PAGE whenever we are stationary. 517 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 518 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 519 return hitsPage(current + 1, x, y); 520 } 521 522 /** 523 * Called directly from a CellLayout (not by the framework), after we've been added as a 524 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 525 * that it should intercept touch events, which is not something that is normally supported. 526 */ 527 @Override 528 public boolean onTouch(View v, MotionEvent event) { 529 return (mIsSmall || mIsInUnshrinkAnimation); 530 } 531 532 /** 533 * Handle a click event on a CellLayout. 534 */ 535 @Override 536 public void onClick(View cellLayout) { 537 // Only allow clicks on a CellLayout if it is shrunken and visible. 538 if ((mIsSmall || mIsInUnshrinkAnimation) && mShrinkState != ShrinkState.BOTTOM_HIDDEN) { 539 mLauncher.onWorkspaceClick((CellLayout) cellLayout); 540 } 541 } 542 543 protected void onWindowVisibilityChanged (int visibility) { 544 mLauncher.onWindowVisibilityChanged(visibility); 545 } 546 547 @Override 548 public boolean dispatchUnhandledMove(View focused, int direction) { 549 if (mIsSmall || mIsInUnshrinkAnimation) { 550 // when the home screens are shrunken, shouldn't allow side-scrolling 551 return false; 552 } 553 return super.dispatchUnhandledMove(focused, direction); 554 } 555 556 @Override 557 public boolean onInterceptTouchEvent(MotionEvent ev) { 558 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 559 mXDown = ev.getX(); 560 mYDown = ev.getY(); 561 } 562 563 if (mIsSmall || mIsInUnshrinkAnimation) { 564 if (mLauncher.isAllAppsVisible() && mShrinkState == ShrinkState.BOTTOM_HIDDEN) { 565 // Intercept this event so we can show the workspace in full view 566 // when it is clicked on and it is small 567 AllAppsPagedView allApps = (AllAppsPagedView) 568 mLauncher.findViewById(R.id.all_apps_paged_view); 569 if (allApps != null) { 570 allApps.onInterceptTouchEvent(ev); 571 } 572 return true; 573 } 574 return false; 575 } 576 return super.onInterceptTouchEvent(ev); 577 } 578 579 @Override 580 protected void determineScrollingStart(MotionEvent ev) { 581 if (!mIsSmall && !mIsInUnshrinkAnimation) { 582 float deltaX = Math.abs(ev.getX() - mXDown); 583 float deltaY = Math.abs(ev.getY() - mYDown); 584 585 if (Float.compare(deltaX, 0f) == 0) return; 586 587 float slope = deltaY / deltaX; 588 float theta = (float) Math.atan(slope); 589 590 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 591 cancelCurrentPageLongPress(); 592 } 593 594 if (theta > MAX_SWIPE_ANGLE) { 595 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 596 return; 597 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 598 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 599 // increase the touch slop to make it harder to begin scrolling the workspace. This 600 // results in vertically scrolling widgets to more easily. The higher the angle, the 601 // more we increase touch slop. 602 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 603 float extraRatio = (float) 604 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 605 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 606 } else { 607 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 608 super.determineScrollingStart(ev); 609 } 610 } 611 } 612 613 protected void onPageBeginMoving() { 614 if (mNextPage != INVALID_PAGE) { 615 // we're snapping to a particular screen 616 enableChildrenCache(mCurrentPage, mNextPage); 617 } else { 618 // this is when user is actively dragging a particular screen, they might 619 // swipe it either left or right (but we won't advance by more than one screen) 620 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 621 } 622 showOutlines(); 623 } 624 625 protected void onPageEndMoving() { 626 clearChildrenCache(); 627 // Hide the outlines, as long as we're not dragging 628 if (!mDragController.dragging()) { 629 hideOutlines(); 630 } 631 mOverScrollMaxBackgroundAlpha = 0.0f; 632 mOverScrollPageIndex = -1; 633 634 if (mDelayedResizeRunnable != null) { 635 mDelayedResizeRunnable.run(); 636 mDelayedResizeRunnable = null; 637 } 638 } 639 640 @Override 641 protected void notifyPageSwitchListener() { 642 super.notifyPageSwitchListener(); 643 644 if (mPreviousIndicator != null) { 645 // if we know the next page, we show the indication for it right away; it looks 646 // weird if the indicators are lagging 647 int page = mNextPage; 648 if (page == INVALID_PAGE) { 649 page = mCurrentPage; 650 } 651 mPreviousIndicator.setLevel(page); 652 mNextIndicator.setLevel(page); 653 } 654 Launcher.setScreen(mCurrentPage); 655 }; 656 657 // As a ratio of screen height, the total distance we want the parallax effect to span 658 // vertically 659 private float wallpaperTravelToScreenHeightRatio(int width, int height) { 660 return 1.1f; 661 } 662 663 // As a ratio of screen height, the total distance we want the parallax effect to span 664 // horizontally 665 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 666 float aspectRatio = width / (float) height; 667 668 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 669 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 670 // We will use these two data points to extrapolate how much the wallpaper parallax effect 671 // to span (ie travel) at any aspect ratio: 672 673 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 674 final float ASPECT_RATIO_PORTRAIT = 10/16f; 675 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 676 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 677 678 // To find out the desired width at different aspect ratios, we use the following two 679 // formulas, where the coefficient on x is the aspect ratio (width/height): 680 // (16/10)x + y = 1.5 681 // (10/16)x + y = 1.2 682 // We solve for x and y and end up with a final formula: 683 final float x = 684 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 685 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 686 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 687 return x * aspectRatio + y; 688 } 689 690 // The range of scroll values for Workspace 691 private int getScrollRange() { 692 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 693 } 694 695 protected void setWallpaperDimension() { 696 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 697 final int maxDim = Math.max(display.getWidth(), display.getHeight()); 698 final int minDim = Math.min(display.getWidth(), display.getHeight()); 699 700 // We need to ensure that there is enough extra space in the wallpaper for the intended 701 // parallax effects 702 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 703 mWallpaperHeight = (int)(maxDim * wallpaperTravelToScreenHeightRatio(maxDim, minDim)); 704 new Thread("setWallpaperDimension") { 705 public void run() { 706 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 707 } 708 }.start(); 709 } 710 711 public void setVerticalWallpaperOffset(float offset) { 712 mWallpaperOffset.setFinalY(offset); 713 } 714 public float getVerticalWallpaperOffset() { 715 return mWallpaperOffset.getCurrY(); 716 } 717 public void setHorizontalWallpaperOffset(float offset) { 718 mWallpaperOffset.setFinalX(offset); 719 } 720 public float getHorizontalWallpaperOffset() { 721 return mWallpaperOffset.getCurrX(); 722 } 723 724 private float wallpaperOffsetForCurrentScroll() { 725 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 726 final boolean isStaticWallpaper = (mWallpaperManager.getWallpaperInfo() == null); 727 // The wallpaper travel width is how far, from left to right, the wallpaper will move 728 // at this orientation (for example, in portrait mode we don't move all the way to the 729 // edges of the wallpaper, or otherwise the parallax effect would be too strong) 730 int wallpaperTravelWidth = (int) (display.getWidth() * 731 wallpaperTravelToScreenWidthRatio(display.getWidth(), display.getHeight())); 732 if (!isStaticWallpaper) { 733 wallpaperTravelWidth = mWallpaperWidth; 734 } 735 736 // Set wallpaper offset steps (1 / (number of screens - 1)) 737 // We have 3 vertical offset states (centered, and then top/bottom aligned 738 // for all apps/customize) 739 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f / (3 - 1)); 740 741 int scrollRange = getScrollRange(); 742 float scrollProgressOffset = 0; 743 744 // Account for overscroll: you only see the absolute edge of the wallpaper if 745 // you overscroll as far as you can in landscape mode. Only do this for static wallpapers 746 // because live wallpapers (and probably 3rd party wallpaper providers) rely on the offset 747 // being even intervals from 0 to 1 (eg [0, 0.25, 0.5, 0.75, 1]) 748 if (isStaticWallpaper) { 749 int overscrollOffset = (int) (maxOverScroll() * display.getWidth()); 750 scrollProgressOffset += overscrollOffset / (float) getScrollRange(); 751 scrollRange += 2 * overscrollOffset; 752 } 753 754 float scrollProgress = 755 mScrollX / (float) scrollRange + scrollProgressOffset; 756 float offsetInDips = wallpaperTravelWidth * scrollProgress + 757 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 758 float offset = offsetInDips / (float) mWallpaperWidth; 759 return offset; 760 } 761 private void syncWallpaperOffsetWithScroll() { 762 if (LauncherApplication.isScreenXLarge()) { 763 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 764 } 765 } 766 767 public void updateWallpaperOffsetImmediately() { 768 mUpdateWallpaperOffsetImmediately = true; 769 } 770 771 private void updateWallpaperOffsets() { 772 boolean updateNow = false; 773 boolean keepUpdating = true; 774 if (mUpdateWallpaperOffsetImmediately) { 775 updateNow = true; 776 keepUpdating = false; 777 mWallpaperOffset.jumpToFinal(); 778 mUpdateWallpaperOffsetImmediately = false; 779 } else { 780 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 781 } 782 if (updateNow) { 783 if (mWindowToken != null) { 784 mWallpaperManager.setWallpaperOffsets(mWindowToken, 785 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 786 } 787 } 788 if (keepUpdating) { 789 fastInvalidate(); 790 } 791 } 792 793 class WallpaperOffsetInterpolator { 794 float mFinalHorizontalWallpaperOffset = 0.0f; 795 float mFinalVerticalWallpaperOffset = 0.5f; 796 float mHorizontalWallpaperOffset = 0.0f; 797 float mVerticalWallpaperOffset = 0.5f; 798 long mLastWallpaperOffsetUpdateTime; 799 boolean mIsMovingFast; 800 boolean mOverrideHorizontalCatchupConstant; 801 float mHorizontalCatchupConstant = 0.35f; 802 float mVerticalCatchupConstant = 0.35f; 803 804 public WallpaperOffsetInterpolator() { 805 } 806 807 public void setOverrideHorizontalCatchupConstant(boolean override) { 808 mOverrideHorizontalCatchupConstant = override; 809 } 810 811 public void setHorizontalCatchupConstant(float f) { 812 mHorizontalCatchupConstant = f; 813 } 814 815 public void setVerticalCatchupConstant(float f) { 816 mVerticalCatchupConstant = f; 817 } 818 819 public boolean computeScrollOffset() { 820 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 821 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 822 mIsMovingFast = false; 823 return false; 824 } 825 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 826 boolean isLandscape = display.getWidth() > display.getHeight(); 827 828 long currentTime = System.currentTimeMillis(); 829 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 830 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 831 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 832 833 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 834 if (!mIsMovingFast && xdiff > 0.07) { 835 mIsMovingFast = true; 836 } 837 838 float fractionToCatchUpIn1MsHorizontal; 839 if (mOverrideHorizontalCatchupConstant) { 840 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 841 } else if (mIsMovingFast) { 842 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 843 } else { 844 // slow 845 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 846 } 847 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 848 849 850 fractionToCatchUpIn1MsHorizontal /= 33f; 851 fractionToCatchUpIn1MsVertical /= 33f; 852 853 final float UPDATE_THRESHOLD = 0.00001f; 854 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 855 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 856 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 857 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 858 if (jumpToFinalValue) { 859 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 860 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 861 } else { 862 float percentToCatchUpVertical = 863 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 864 float percentToCatchUpHorizontal = 865 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 866 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 867 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 868 } 869 870 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 871 return true; 872 } 873 874 public float getCurrX() { 875 return mHorizontalWallpaperOffset; 876 } 877 878 public float getFinalX() { 879 return mFinalHorizontalWallpaperOffset; 880 } 881 882 public float getCurrY() { 883 return mVerticalWallpaperOffset; 884 } 885 886 public float getFinalY() { 887 return mFinalVerticalWallpaperOffset; 888 } 889 890 public void setFinalX(float x) { 891 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 892 } 893 894 public void setFinalY(float y) { 895 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 896 } 897 898 public void jumpToFinal() { 899 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 900 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 901 } 902 } 903 904 @Override 905 public void computeScroll() { 906 super.computeScroll(); 907 if (mSyncWallpaperOffsetWithScroll) { 908 syncWallpaperOffsetWithScroll(); 909 } 910 } 911 912 void showOutlines() { 913 if (!mIsSmall && !mIsInUnshrinkAnimation) { 914 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 915 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 916 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 917 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 918 mChildrenOutlineFadeInAnimation.start(); 919 } 920 } 921 922 void hideOutlines() { 923 if (!mIsSmall && !mIsInUnshrinkAnimation) { 924 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 925 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 926 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 927 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 928 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 929 mChildrenOutlineFadeOutAnimation.start(); 930 } 931 } 932 933 public void showOutlinesTemporarily() { 934 if (!mIsPageMoving && !isTouchActive()) { 935 snapToPage(mCurrentPage); 936 } 937 } 938 939 public void setChildrenOutlineAlpha(float alpha) { 940 mChildrenOutlineAlpha = alpha; 941 for (int i = 0; i < getChildCount(); i++) { 942 CellLayout cl = (CellLayout) getChildAt(i); 943 cl.setBackgroundAlpha(alpha); 944 } 945 } 946 947 public float getChildrenOutlineAlpha() { 948 return mChildrenOutlineAlpha; 949 } 950 951 void disableBackground() { 952 mDrawBackground = false; 953 } 954 void enableBackground() { 955 mDrawBackground = true; 956 } 957 958 private void showBackgroundGradientForAllApps() { 959 showBackgroundGradient(); 960 mDrawCustomizeTrayBackground = false; 961 } 962 963 private void showBackgroundGradientForCustomizeTray() { 964 showBackgroundGradient(); 965 mDrawCustomizeTrayBackground = true; 966 } 967 968 private void showBackgroundGradient() { 969 if (mBackground == null) return; 970 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 971 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 972 mBackgroundFadeInAnimation = ValueAnimator.ofFloat(getBackgroundAlpha(), 1f); 973 mBackgroundFadeInAnimation.addUpdateListener(new AnimatorUpdateListener() { 974 public void onAnimationUpdate(ValueAnimator animation) { 975 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 976 } 977 }); 978 mBackgroundFadeInAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 979 mBackgroundFadeInAnimation.setDuration(BACKGROUND_FADE_IN_DURATION); 980 mBackgroundFadeInAnimation.start(); 981 } 982 983 private void hideBackgroundGradient() { 984 if (mBackground == null) return; 985 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 986 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 987 mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(getBackgroundAlpha(), 0f); 988 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 989 public void onAnimationUpdate(ValueAnimator animation) { 990 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 991 } 992 }); 993 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 994 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 995 mBackgroundFadeOutAnimation.start(); 996 } 997 998 public void setBackgroundAlpha(float alpha) { 999 if (alpha != mBackgroundAlpha) { 1000 mBackgroundAlpha = alpha; 1001 invalidate(); 1002 } 1003 } 1004 1005 public float getBackgroundAlpha() { 1006 return mBackgroundAlpha; 1007 } 1008 1009 /** 1010 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 1011 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 1012 * as being larger. This method computes what offset the rotated view should be translated 1013 * in order to minimize this perceived gap. 1014 * @param degrees Angle of the view 1015 * @param width Width of the view 1016 * @param height Height of the view 1017 * @return Offset to be used in a View.setTranslationX() call 1018 */ 1019 private float getOffsetXForRotation(float degrees, int width, int height) { 1020 mMatrix.reset(); 1021 mCamera.save(); 1022 mCamera.rotateY(Math.abs(degrees)); 1023 mCamera.getMatrix(mMatrix); 1024 mCamera.restore(); 1025 1026 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 1027 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 1028 mTempFloat2[0] = width; 1029 mTempFloat2[1] = height; 1030 mMatrix.mapPoints(mTempFloat2); 1031 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 1032 } 1033 1034 float backgroundAlphaInterpolator(float r) { 1035 float pivotA = 0.1f; 1036 float pivotB = 0.4f; 1037 if (r < pivotA) { 1038 return 0; 1039 } else if (r > pivotB) { 1040 return 1.0f; 1041 } else { 1042 return (r - pivotA)/(pivotB - pivotA); 1043 } 1044 } 1045 1046 float overScrollBackgroundAlphaInterpolator(float r) { 1047 float threshold = 0.08f; 1048 1049 if (r > mOverScrollMaxBackgroundAlpha) { 1050 mOverScrollMaxBackgroundAlpha = r; 1051 } else if (r < mOverScrollMaxBackgroundAlpha) { 1052 r = mOverScrollMaxBackgroundAlpha; 1053 } 1054 1055 return Math.min(r / threshold, 1.0f); 1056 } 1057 1058 @Override 1059 protected void screenScrolled(int screenCenter) { 1060 // If the screen is not xlarge, then don't rotate the CellLayouts 1061 if (!LauncherApplication.isScreenXLarge()) return; 1062 1063 final int halfScreenSize = getMeasuredWidth() / 2; 1064 1065 for (int i = 0; i < getChildCount(); i++) { 1066 CellLayout cl = (CellLayout) getChildAt(i); 1067 if (cl != null) { 1068 int totalDistance = getScaledMeasuredWidth(cl) + mPageSpacing; 1069 int delta = screenCenter - (getChildOffset(i) - 1070 getRelativeChildOffset(i) + halfScreenSize); 1071 1072 float scrollProgress = delta / (totalDistance * 1.0f); 1073 scrollProgress = Math.min(scrollProgress, 1.0f); 1074 scrollProgress = Math.max(scrollProgress, -1.0f); 1075 1076 // If the current page (i) is being overscrolled, we use a different 1077 // set of rules for setting the background alpha multiplier. 1078 if ((mScrollX < 0 && i == 0) || (mScrollX > mMaxScrollX && 1079 i == getChildCount() -1 )) { 1080 cl.setBackgroundAlphaMultiplier( 1081 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 1082 mOverScrollPageIndex = i; 1083 } else if (mOverScrollPageIndex != i) { 1084 cl.setBackgroundAlphaMultiplier( 1085 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1086 } 1087 1088 float rotation = WORKSPACE_ROTATION * scrollProgress; 1089 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1090 cl.setTranslationX(translationX); 1091 1092 cl.setRotationY(rotation); 1093 } 1094 } 1095 } 1096 1097 protected void onAttachedToWindow() { 1098 super.onAttachedToWindow(); 1099 mWindowToken = getWindowToken(); 1100 computeScroll(); 1101 mDragController.setWindowToken(mWindowToken); 1102 } 1103 1104 protected void onDetachedFromWindow() { 1105 mWindowToken = null; 1106 } 1107 1108 @Override 1109 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1110 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1111 mUpdateWallpaperOffsetImmediately = true; 1112 } 1113 super.onLayout(changed, left, top, right, bottom); 1114 1115 // if shrinkToBottom() is called on initialization, it has to be deferred 1116 // until after the first call to onLayout so that it has the correct width 1117 if (mWaitingToShrink) { 1118 // shrink can trigger a synchronous onLayout call, so we 1119 // post this to avoid a stack overflow / tangled onLayout calls 1120 post(new Runnable() { 1121 public void run() { 1122 shrink(mWaitingToShrinkState, false); 1123 mWaitingToShrink = false; 1124 } 1125 }); 1126 } 1127 1128 if (LauncherApplication.isInPlaceRotationEnabled()) { 1129 // When the device is rotated, the scroll position of the current screen 1130 // needs to be refreshed 1131 setCurrentPage(getCurrentPage()); 1132 } 1133 } 1134 1135 @Override 1136 protected void onDraw(Canvas canvas) { 1137 updateWallpaperOffsets(); 1138 1139 // Draw the background gradient if necessary 1140 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1141 int alpha = (int) (mBackgroundAlpha * 255); 1142 if (mDrawCustomizeTrayBackground) { 1143 // Find out where to offset the gradient for the customization tray content 1144 mCustomizationDrawer.getLocationOnScreen(mCustomizationDrawerPos); 1145 final Matrix m = mCustomizationDrawer.getMatrix(); 1146 mCustomizationDrawerTransformedPos[0] = 0.0f; 1147 mCustomizationDrawerTransformedPos[1] = mCustomizationDrawerContent.getTop(); 1148 m.mapPoints(mCustomizationDrawerTransformedPos); 1149 1150 // Draw the bg glow behind the gradient 1151 mCustomizeTrayBackground.setAlpha(alpha); 1152 mCustomizeTrayBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1153 getMeasuredHeight()); 1154 mCustomizeTrayBackground.draw(canvas); 1155 1156 // Draw the bg gradient 1157 final int offset = (int) (mCustomizationDrawerPos[1] + 1158 mCustomizationDrawerTransformedPos[1]); 1159 mBackground.setAlpha(alpha); 1160 mBackground.setBounds(mScrollX, offset, mScrollX + getMeasuredWidth(), 1161 offset + getMeasuredHeight()); 1162 mBackground.draw(canvas); 1163 } else { 1164 mBackground.setAlpha(alpha); 1165 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1166 getMeasuredHeight()); 1167 mBackground.draw(canvas); 1168 } 1169 } 1170 super.onDraw(canvas); 1171 } 1172 1173 @Override 1174 protected void dispatchDraw(Canvas canvas) { 1175 if (mIsSmall || mIsInUnshrinkAnimation) { 1176 // Draw all the workspaces if we're small 1177 final int pageCount = getChildCount(); 1178 final long drawingTime = getDrawingTime(); 1179 for (int i = 0; i < pageCount; i++) { 1180 final CellLayout page = (CellLayout) getChildAt(i); 1181 if (page.getVisibility() == VISIBLE 1182 && (page.getAlpha() != 0f || page.getBackgroundAlpha() != 0f)) { 1183 drawChild(canvas, page, drawingTime); 1184 } 1185 } 1186 } else { 1187 super.dispatchDraw(canvas); 1188 1189 final int width = getWidth(); 1190 final int height = getHeight(); 1191 1192 // In portrait orientation, draw the glowing edge when dragging to adjacent screens 1193 if (mInScrollArea && (height > width)) { 1194 final int pageHeight = getChildAt(0).getHeight(); 1195 1196 // This determines the height of the glowing edge: 90% of the page height 1197 final int padding = (int) ((height - pageHeight) * 0.5f + pageHeight * 0.1f); 1198 1199 final CellLayout leftPage = (CellLayout) getChildAt(mCurrentPage - 1); 1200 final CellLayout rightPage = (CellLayout) getChildAt(mCurrentPage + 1); 1201 1202 if (leftPage != null && leftPage.getIsDragOverlapping()) { 1203 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left); 1204 d.setBounds(mScrollX, padding, mScrollX + d.getIntrinsicWidth(), height - padding); 1205 d.draw(canvas); 1206 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 1207 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right); 1208 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), padding, mScrollX + width, height - padding); 1209 d.draw(canvas); 1210 } 1211 } 1212 1213 if (mDropView != null) { 1214 // We are animating an item that was just dropped on the home screen. 1215 // Render its View in the current animation position. 1216 canvas.save(Canvas.MATRIX_SAVE_FLAG); 1217 final int xPos = mDropViewPos[0] - mDropView.getScrollX(); 1218 final int yPos = mDropViewPos[1] - mDropView.getScrollY(); 1219 canvas.translate(xPos, yPos); 1220 mDropView.draw(canvas); 1221 canvas.restore(); 1222 } 1223 } 1224 } 1225 1226 @Override 1227 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1228 if (!mLauncher.isAllAppsVisible()) { 1229 final Folder openFolder = getOpenFolder(); 1230 if (openFolder != null) { 1231 return openFolder.requestFocus(direction, previouslyFocusedRect); 1232 } else { 1233 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1234 } 1235 } 1236 return false; 1237 } 1238 1239 @Override 1240 public int getDescendantFocusability() { 1241 if (mIsSmall) { 1242 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1243 } 1244 return super.getDescendantFocusability(); 1245 } 1246 1247 @Override 1248 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1249 if (!mLauncher.isAllAppsVisible()) { 1250 final Folder openFolder = getOpenFolder(); 1251 if (openFolder != null) { 1252 openFolder.addFocusables(views, direction); 1253 } else { 1254 super.addFocusables(views, direction, focusableMode); 1255 } 1256 } 1257 } 1258 1259 @Override 1260 public boolean dispatchTouchEvent(MotionEvent ev) { 1261 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 1262 // (In XLarge mode, the workspace is shrunken below all apps, and responds to taps 1263 // ie when you click on a mini-screen, it zooms back to that screen) 1264 if (!LauncherApplication.isScreenXLarge() && mLauncher.isAllAppsVisible()) { 1265 return false; 1266 } 1267 } 1268 1269 return super.dispatchTouchEvent(ev); 1270 } 1271 1272 void enableChildrenCache(int fromPage, int toPage) { 1273 if (fromPage > toPage) { 1274 final int temp = fromPage; 1275 fromPage = toPage; 1276 toPage = temp; 1277 } 1278 1279 final int screenCount = getChildCount(); 1280 1281 fromPage = Math.max(fromPage, 0); 1282 toPage = Math.min(toPage, screenCount - 1); 1283 1284 for (int i = fromPage; i <= toPage; i++) { 1285 final CellLayout layout = (CellLayout) getChildAt(i); 1286 layout.setChildrenDrawnWithCacheEnabled(true); 1287 layout.setChildrenDrawingCacheEnabled(true); 1288 } 1289 } 1290 1291 void clearChildrenCache() { 1292 final int screenCount = getChildCount(); 1293 for (int i = 0; i < screenCount; i++) { 1294 final CellLayout layout = (CellLayout) getChildAt(i); 1295 layout.setChildrenDrawnWithCacheEnabled(false); 1296 } 1297 } 1298 1299 @Override 1300 public boolean onTouchEvent(MotionEvent ev) { 1301 AllAppsPagedView allApps = (AllAppsPagedView) 1302 mLauncher.findViewById(R.id.all_apps_paged_view); 1303 1304 if (mLauncher.isAllAppsVisible() && mShrinkState == ShrinkState.BOTTOM_HIDDEN 1305 && allApps != null) { 1306 if (ev.getAction() == MotionEvent.ACTION_UP && 1307 allApps.getTouchState() == TOUCH_STATE_REST) { 1308 1309 // Cancel any scrolling that is in progress. 1310 if (!mScroller.isFinished()) { 1311 mScroller.abortAnimation(); 1312 } 1313 setCurrentPage(mCurrentPage); 1314 1315 if (mShrinkState == ShrinkState.BOTTOM_HIDDEN) { 1316 mLauncher.showWorkspace(true); 1317 } 1318 allApps.onTouchEvent(ev); 1319 return true; 1320 } else { 1321 return allApps.onTouchEvent(ev); 1322 } 1323 } 1324 return super.onTouchEvent(ev); 1325 } 1326 1327 protected void enableChildrenLayers(boolean enable) { 1328 for (int i = 0; i < getPageCount(); i++) { 1329 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(enable); 1330 } 1331 } 1332 @Override 1333 protected void pageBeginMoving() { 1334 enableChildrenLayers(true); 1335 super.pageBeginMoving(); 1336 } 1337 1338 @Override 1339 protected void pageEndMoving() { 1340 if (!mIsSmall && !mIsInUnshrinkAnimation) { 1341 enableChildrenLayers(false); 1342 } 1343 super.pageEndMoving(); 1344 } 1345 1346 @Override 1347 protected void onWallpaperTap(MotionEvent ev) { 1348 final int[] position = mTempCell; 1349 getLocationOnScreen(position); 1350 1351 int pointerIndex = ev.getActionIndex(); 1352 position[0] += (int) ev.getX(pointerIndex); 1353 position[1] += (int) ev.getY(pointerIndex); 1354 1355 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1356 ev.getAction() == MotionEvent.ACTION_UP 1357 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1358 position[0], position[1], 0, null); 1359 } 1360 1361 public boolean isSmall() { 1362 return mIsSmall; 1363 } 1364 1365 private float getYScaleForScreen(int screen) { 1366 int x = Math.abs(screen - 2); 1367 1368 // TODO: This should be generalized for use with arbitrary rotation angles. 1369 switch(x) { 1370 case 0: return EXTRA_SCALE_FACTOR_0; 1371 case 1: return EXTRA_SCALE_FACTOR_1; 1372 case 2: return EXTRA_SCALE_FACTOR_2; 1373 } 1374 return 1.0f; 1375 } 1376 1377 public void shrink(ShrinkState shrinkState) { 1378 shrink(shrinkState, true); 1379 } 1380 1381 private int getCustomizeDrawerHeight() { 1382 TabHost customizationDrawer = mLauncher.getCustomizationDrawer(); 1383 int height = customizationDrawer.getHeight(); 1384 TabWidget tabWidget = (TabWidget) 1385 customizationDrawer.findViewById(com.android.internal.R.id.tabs); 1386 if (tabWidget.getTabCount() > 0) { 1387 TextView tabText = (TextView) tabWidget.getChildTabViewAt(0); 1388 // subtract the empty space above the tab text 1389 height -= ((tabWidget.getHeight() - tabText.getLineHeight())) / 2; 1390 } 1391 return height; 1392 } 1393 1394 // we use this to shrink the workspace for the all apps view and the customize view 1395 public void shrink(ShrinkState shrinkState, boolean animated) { 1396 if (mFirstLayout) { 1397 // (mFirstLayout == "first layout has not happened yet") 1398 // if we get a call to shrink() as part of our initialization (for example, if 1399 // Launcher is started in All Apps mode) then we need to wait for a layout call 1400 // to get our width so we can layout the mini-screen views correctly 1401 mWaitingToShrink = true; 1402 mWaitingToShrinkState = shrinkState; 1403 return; 1404 } 1405 // Stop any scrolling, move to the current page right away 1406 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1407 if (!mIsDragInProcess) { 1408 updateWhichPagesAcceptDrops(shrinkState); 1409 } 1410 1411 CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 1412 if (currentPage == null) { 1413 Log.w(TAG, "currentPage is NULL! mCurrentPage " + mCurrentPage 1414 + " mNextPage " + mNextPage); 1415 return; 1416 } 1417 if (currentPage.getBackgroundAlphaMultiplier() < 1.0f) { 1418 currentPage.setBackgroundAlpha(0.0f); 1419 } 1420 currentPage.setBackgroundAlphaMultiplier(1.0f); 1421 1422 mIsSmall = true; 1423 mShrinkState = shrinkState; 1424 1425 // we intercept and reject all touch events when we're small, so be sure to reset the state 1426 mTouchState = TOUCH_STATE_REST; 1427 mActivePointerId = INVALID_POINTER; 1428 1429 final Resources res = getResources(); 1430 final int screenWidth = getWidth(); 1431 final int screenHeight = getHeight(); 1432 1433 // Making the assumption that all pages have the same width as the 0th 1434 final int pageWidth = getChildAt(0).getMeasuredWidth(); 1435 final int pageHeight = getChildAt(0).getMeasuredHeight(); 1436 1437 final int scaledPageWidth = (int) (SHRINK_FACTOR * pageWidth); 1438 final int scaledPageHeight = (int) (SHRINK_FACTOR * pageHeight); 1439 final float extraScaledSpacing = res.getDimension(R.dimen.smallScreenExtraSpacing); 1440 1441 final int screenCount = getChildCount(); 1442 float totalWidth = screenCount * scaledPageWidth + (screenCount - 1) * extraScaledSpacing; 1443 1444 boolean isPortrait = getMeasuredHeight() > getMeasuredWidth(); 1445 float y = (isPortrait ? 1446 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginPortrait) : 1447 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginLandscape)); 1448 float finalAlpha = 1.0f; 1449 float extraShrinkFactor = 1.0f; 1450 1451 if (shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1452 y = screenHeight - y - scaledPageHeight; 1453 } else if (shrinkState == ShrinkState.BOTTOM_HIDDEN) { 1454 // We shrink and disappear to nothing in the case of all apps 1455 // (which is when we shrink to the bottom) 1456 y = screenHeight - y - scaledPageHeight; 1457 finalAlpha = 0.0f; 1458 } else if (shrinkState == ShrinkState.MIDDLE) { 1459 y = screenHeight / 2 - scaledPageHeight / 2; 1460 finalAlpha = 1.0f; 1461 } else if (shrinkState == ShrinkState.TOP) { 1462 y = (screenHeight - getCustomizeDrawerHeight() - scaledPageHeight) / 2; 1463 } 1464 1465 int duration; 1466 if (shrinkState == ShrinkState.BOTTOM_HIDDEN || shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1467 duration = res.getInteger(R.integer.config_allAppsWorkspaceShrinkTime); 1468 } else { 1469 duration = res.getInteger(R.integer.config_customizeWorkspaceShrinkTime); 1470 } 1471 1472 // We animate all the screens to the centered position in workspace 1473 // At the same time, the screens become greyed/dimmed 1474 1475 // newX is initialized to the left-most position of the centered screens 1476 float x = mScroller.getFinalX() + screenWidth / 2 - totalWidth / 2; 1477 1478 // We are going to scale about the center of the view, so we need to adjust the positions 1479 // of the views accordingly 1480 x -= (pageWidth - scaledPageWidth) / 2.0f; 1481 y -= (pageHeight - scaledPageHeight) / 2.0f; 1482 1483 if (mAnimator != null) { 1484 mAnimator.cancel(); 1485 } 1486 1487 mAnimator = new AnimatorSet(); 1488 1489 final float[] oldXs = new float[getChildCount()]; 1490 final float[] oldYs = new float[getChildCount()]; 1491 final float[] oldScaleXs = new float[getChildCount()]; 1492 final float[] oldScaleYs = new float[getChildCount()]; 1493 final float[] oldBackgroundAlphas = new float[getChildCount()]; 1494 final float[] oldAlphas = new float[getChildCount()]; 1495 final float[] oldRotationYs = new float[getChildCount()]; 1496 final float[] newXs = new float[getChildCount()]; 1497 final float[] newYs = new float[getChildCount()]; 1498 final float[] newScaleXs = new float[getChildCount()]; 1499 final float[] newScaleYs = new float[getChildCount()]; 1500 final float[] newBackgroundAlphas = new float[getChildCount()]; 1501 final float[] newAlphas = new float[getChildCount()]; 1502 final float[] newRotationYs = new float[getChildCount()]; 1503 1504 for (int i = 0; i < screenCount; i++) { 1505 final CellLayout cl = (CellLayout) getChildAt(i); 1506 1507 float rotation = (-i + 2) * WORKSPACE_ROTATION; 1508 float rotationScaleX = (float) (1.0f / Math.cos(Math.PI * rotation / 180.0f)); 1509 float rotationScaleY = getYScaleForScreen(i); 1510 1511 oldAlphas[i] = cl.getAlpha(); 1512 newAlphas[i] = finalAlpha; 1513 if (animated && (oldAlphas[i] != 0f || newAlphas[i] != 0f)) { 1514 // if the CellLayout will be visible during the animation, force building its 1515 // hardware layer immediately so we don't see a blip later in the animation 1516 cl.buildChildrenLayer(); 1517 } 1518 if (animated) { 1519 oldXs[i] = cl.getX(); 1520 oldYs[i] = cl.getY(); 1521 oldScaleXs[i] = cl.getScaleX(); 1522 oldScaleYs[i] = cl.getScaleY(); 1523 oldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1524 oldRotationYs[i] = cl.getRotationY(); 1525 newXs[i] = x; 1526 newYs[i] = y; 1527 newScaleXs[i] = SHRINK_FACTOR * rotationScaleX * extraShrinkFactor; 1528 newScaleYs[i] = SHRINK_FACTOR * rotationScaleY * extraShrinkFactor; 1529 newBackgroundAlphas[i] = finalAlpha; 1530 newRotationYs[i] = rotation; 1531 } else { 1532 cl.setX((int)x); 1533 cl.setY((int)y); 1534 cl.setScaleX(SHRINK_FACTOR * rotationScaleX * extraShrinkFactor); 1535 cl.setScaleY(SHRINK_FACTOR * rotationScaleY * extraShrinkFactor); 1536 cl.setBackgroundAlpha(finalAlpha); 1537 cl.setAlpha(finalAlpha); 1538 cl.setRotationY(rotation); 1539 mShrinkAnimationListener.onAnimationEnd(null); 1540 } 1541 // increment newX for the next screen 1542 x += scaledPageWidth + extraScaledSpacing; 1543 } 1544 1545 float wallpaperOffset = 0.5f; 1546 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 1547 int wallpaperTravelHeight = (int) (display.getHeight() * 1548 wallpaperTravelToScreenHeightRatio(display.getWidth(), display.getHeight())); 1549 float offsetFromCenter = (wallpaperTravelHeight / (float) mWallpaperHeight) / 2f; 1550 boolean isLandscape = display.getWidth() > display.getHeight(); 1551 1552 switch (shrinkState) { 1553 // animating in 1554 case TOP: 1555 // customize 1556 wallpaperOffset = 0.5f + offsetFromCenter; 1557 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.46f : 0.44f); 1558 break; 1559 case MIDDLE: 1560 case SPRING_LOADED: 1561 wallpaperOffset = 0.5f; 1562 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.34f : 0.32f); 1563 break; 1564 case BOTTOM_HIDDEN: 1565 case BOTTOM_VISIBLE: 1566 // allapps 1567 wallpaperOffset = 0.5f - offsetFromCenter; 1568 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.34f : 0.32f); 1569 break; 1570 } 1571 1572 setLayoutScale(1.0f); 1573 if (animated) { 1574 mWallpaperOffset.setHorizontalCatchupConstant(0.46f); 1575 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1576 1577 mSyncWallpaperOffsetWithScroll = false; 1578 1579 ValueAnimator animWithInterpolator = 1580 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1581 animWithInterpolator.setInterpolator(mZoomOutInterpolator); 1582 1583 final float oldHorizontalWallpaperOffset = getHorizontalWallpaperOffset(); 1584 final float oldVerticalWallpaperOffset = getVerticalWallpaperOffset(); 1585 final float newHorizontalWallpaperOffset = 0.5f; 1586 final float newVerticalWallpaperOffset = wallpaperOffset; 1587 animWithInterpolator.addUpdateListener(new LauncherAnimatorUpdateListener() { 1588 public void onAnimationUpdate(float a, float b) { 1589 if (b == 0f) { 1590 // an optimization, and required for correct behavior. 1591 return; 1592 } 1593 fastInvalidate(); 1594 setHorizontalWallpaperOffset( 1595 a * oldHorizontalWallpaperOffset + b * newHorizontalWallpaperOffset); 1596 setVerticalWallpaperOffset( 1597 a * oldVerticalWallpaperOffset + b * newVerticalWallpaperOffset); 1598 for (int i = 0; i < screenCount; i++) { 1599 final CellLayout cl = (CellLayout) getChildAt(i); 1600 cl.fastInvalidate(); 1601 cl.setFastX(a * oldXs[i] + b * newXs[i]); 1602 cl.setFastY(a * oldYs[i] + b * newYs[i]); 1603 cl.setFastScaleX(a * oldScaleXs[i] + b * newScaleXs[i]); 1604 cl.setFastScaleY(a * oldScaleYs[i] + b * newScaleYs[i]); 1605 cl.setFastBackgroundAlpha( 1606 a * oldBackgroundAlphas[i] + b * newBackgroundAlphas[i]); 1607 cl.setFastAlpha(a * oldAlphas[i] + b * newAlphas[i]); 1608 cl.setFastRotationY(a * oldRotationYs[i] + b * newRotationYs[i]); 1609 } 1610 } 1611 }); 1612 mAnimator.playTogether(animWithInterpolator); 1613 mAnimator.addListener(mShrinkAnimationListener); 1614 mAnimator.start(); 1615 } else { 1616 setVerticalWallpaperOffset(wallpaperOffset); 1617 setHorizontalWallpaperOffset(0.5f); 1618 updateWallpaperOffsetImmediately(); 1619 } 1620 setChildrenDrawnWithCacheEnabled(true); 1621 1622 if (shrinkState == ShrinkState.TOP) { 1623 showBackgroundGradientForCustomizeTray(); 1624 } else { 1625 showBackgroundGradientForAllApps(); 1626 } 1627 } 1628 1629 /* 1630 * This interpolator emulates the rate at which the perceived scale of an object changes 1631 * as its distance from a camera increases. When this interpolator is applied to a scale 1632 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1633 * from the camera. 1634 */ 1635 static class ZInterpolator implements TimeInterpolator { 1636 private float focalLength; 1637 1638 public ZInterpolator(float foc) { 1639 focalLength = foc; 1640 } 1641 1642 public float getInterpolation(float input) { 1643 return (1.0f - focalLength / (focalLength + input)) / 1644 (1.0f - focalLength / (focalLength + 1.0f)); 1645 } 1646 } 1647 1648 /* 1649 * The exact reverse of ZInterpolator. 1650 */ 1651 static class InverseZInterpolator implements TimeInterpolator { 1652 private ZInterpolator zInterpolator; 1653 public InverseZInterpolator(float foc) { 1654 zInterpolator = new ZInterpolator(foc); 1655 } 1656 public float getInterpolation(float input) { 1657 return 1 - zInterpolator.getInterpolation(1 - input); 1658 } 1659 } 1660 1661 /* 1662 * ZInterpolator compounded with an ease-out. 1663 */ 1664 static class ZoomOutInterpolator implements TimeInterpolator { 1665 private final ZInterpolator zInterpolator = new ZInterpolator(0.2f); 1666 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(1.8f); 1667 1668 public float getInterpolation(float input) { 1669 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1670 } 1671 } 1672 1673 /* 1674 * InvereZInterpolator compounded with an ease-out. 1675 */ 1676 static class ZoomInInterpolator implements TimeInterpolator { 1677 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1678 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1679 1680 public float getInterpolation(float input) { 1681 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1682 } 1683 } 1684 1685 private final ZoomOutInterpolator mZoomOutInterpolator = new ZoomOutInterpolator(); 1686 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1687 1688 private void updateWhichPagesAcceptDrops(ShrinkState state) { 1689 updateWhichPagesAcceptDropsHelper(state, false, 1, 1); 1690 } 1691 1692 private void updateWhichPagesAcceptDropsDuringDrag(ShrinkState state, int spanX, int spanY) { 1693 updateWhichPagesAcceptDropsHelper(state, true, spanX, spanY); 1694 } 1695 1696 private void updateWhichPagesAcceptDropsHelper( 1697 ShrinkState state, boolean isDragHappening, int spanX, int spanY) { 1698 final int screenCount = getChildCount(); 1699 for (int i = 0; i < screenCount; i++) { 1700 CellLayout cl = (CellLayout) getChildAt(i); 1701 cl.setIsDragOccuring(isDragHappening); 1702 if (state == null) { 1703 // If we are not in a shrunken state, mark all cell layouts as droppable (if they 1704 // have the space) 1705 cl.setAcceptsDrops(cl.findCellForSpan(null, spanX, spanY)); 1706 } else { 1707 switch (state) { 1708 case TOP: 1709 cl.setIsDefaultDropTarget(i == mCurrentPage); 1710 case BOTTOM_HIDDEN: 1711 case BOTTOM_VISIBLE: 1712 case SPRING_LOADED: 1713 if (state != ShrinkState.TOP) { 1714 cl.setIsDefaultDropTarget(false); 1715 } 1716 if (!isDragHappening) { 1717 // even if a drag isn't happening, we don't want to show a screen as 1718 // accepting drops if it doesn't have at least one free cell 1719 spanX = 1; 1720 spanY = 1; 1721 } 1722 // the page accepts drops if we can find at least one empty spot 1723 cl.setAcceptsDrops(cl.findCellForSpan(null, spanX, spanY)); 1724 break; 1725 default: 1726 throw new RuntimeException("Unhandled ShrinkState " + state); 1727 } 1728 } 1729 } 1730 } 1731 1732 /* 1733 * 1734 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1735 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1736 * 1737 * These methods mark the appropriate pages as accepting drops (which alters their visual 1738 * appearance). 1739 * 1740 */ 1741 public void onDragStartedWithItem(View v) { 1742 mIsDragInProcess = true; 1743 1744 final Canvas canvas = new Canvas(); 1745 1746 // We need to add extra padding to the bitmap to make room for the glow effect 1747 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1748 1749 // The outline is used to visualize where the item will land if dropped 1750 mDragOutline = createDragOutline(v, canvas, bitmapPadding); 1751 } 1752 1753 public void onDragStartedWithItemSpans(int spanX, int spanY, Bitmap b) { 1754 mIsDragInProcess = true; 1755 1756 final Canvas canvas = new Canvas(); 1757 1758 // We need to add extra padding to the bitmap to make room for the glow effect 1759 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1760 1761 CellLayout cl = (CellLayout) getChildAt(0); 1762 1763 int[] size = cl.cellSpansToSize(spanX, spanY); 1764 1765 // The outline is used to visualize where the item will land if dropped 1766 mDragOutline = createDragOutline(b, canvas, bitmapPadding, size[0], size[1]); 1767 1768 updateWhichPagesAcceptDropsDuringDrag(mShrinkState, spanX, spanY); 1769 } 1770 1771 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1772 // never dragged over 1773 public void onDragStopped(boolean success) { 1774 mLastDragView = null; 1775 // In the success case, DragController has already called onDragExit() 1776 if (!success) { 1777 doDragExit(); 1778 } 1779 mIsDragInProcess = false; 1780 updateWhichPagesAcceptDrops(mShrinkState); 1781 } 1782 1783 // We call this when we trigger an unshrink by clicking on the CellLayout cl 1784 public void unshrink(CellLayout clThatWasClicked) { 1785 unshrink(clThatWasClicked, false); 1786 } 1787 1788 public void unshrink(CellLayout clThatWasClicked, boolean springLoaded) { 1789 int newCurrentPage = indexOfChild(clThatWasClicked); 1790 if (mIsSmall) { 1791 if (springLoaded) { 1792 setLayoutScale(SPRING_LOADED_DRAG_SHRINK_FACTOR); 1793 } 1794 scrollToNewPageWithoutMovingPages(newCurrentPage); 1795 unshrink(true, springLoaded); 1796 } 1797 } 1798 1799 1800 public void enterSpringLoadedDragMode(CellLayout clThatWasClicked) { 1801 mShrinkState = ShrinkState.SPRING_LOADED; 1802 unshrink(clThatWasClicked, true); 1803 mDragTargetLayout.onDragEnter(); 1804 } 1805 1806 public void exitSpringLoadedDragMode(ShrinkState shrinkState) { 1807 shrink(shrinkState); 1808 if (mDragTargetLayout != null) { 1809 mDragTargetLayout.onDragExit(); 1810 } 1811 } 1812 1813 public void exitWidgetResizeMode() { 1814 DragLayer dragLayer = (DragLayer) mLauncher.findViewById(R.id.drag_layer); 1815 dragLayer.clearAllResizeFrames(); 1816 } 1817 1818 void unshrink(boolean animated) { 1819 unshrink(animated, false); 1820 } 1821 1822 void unshrink(boolean animated, boolean springLoaded) { 1823 mWaitingToShrink = false; 1824 if (mIsSmall) { 1825 float finalScaleFactor = 1.0f; 1826 float finalBackgroundAlpha = 0.0f; 1827 if (springLoaded) { 1828 finalScaleFactor = SPRING_LOADED_DRAG_SHRINK_FACTOR; 1829 finalBackgroundAlpha = 1.0f; 1830 } else { 1831 mIsSmall = false; 1832 } 1833 if (mAnimator != null) { 1834 mAnimator.cancel(); 1835 } 1836 1837 mAnimator = new AnimatorSet(); 1838 final int screenCount = getChildCount(); 1839 1840 final int duration = getResources().getInteger(R.integer.config_workspaceUnshrinkTime); 1841 1842 final float[] oldTranslationXs = new float[getChildCount()]; 1843 final float[] oldTranslationYs = new float[getChildCount()]; 1844 final float[] oldScaleXs = new float[getChildCount()]; 1845 final float[] oldScaleYs = new float[getChildCount()]; 1846 final float[] oldBackgroundAlphas = new float[getChildCount()]; 1847 final float[] oldBackgroundAlphaMultipliers = new float[getChildCount()]; 1848 final float[] oldAlphas = new float[getChildCount()]; 1849 final float[] oldRotationYs = new float[getChildCount()]; 1850 final float[] newTranslationXs = new float[getChildCount()]; 1851 final float[] newTranslationYs = new float[getChildCount()]; 1852 final float[] newScaleXs = new float[getChildCount()]; 1853 final float[] newScaleYs = new float[getChildCount()]; 1854 final float[] newBackgroundAlphas = new float[getChildCount()]; 1855 final float[] newBackgroundAlphaMultipliers = new float[getChildCount()]; 1856 final float[] newAlphas = new float[getChildCount()]; 1857 final float[] newRotationYs = new float[getChildCount()]; 1858 1859 for (int i = 0; i < screenCount; i++) { 1860 final CellLayout cl = (CellLayout)getChildAt(i); 1861 float finalAlphaValue = (i == mCurrentPage) ? 1.0f : 0.0f; 1862 float finalAlphaMultiplierValue = 1863 ((i == mCurrentPage) && (mShrinkState != ShrinkState.SPRING_LOADED)) ? 1864 0.0f : 1.0f; 1865 float rotation = 0.0f; 1866 1867 if (i < mCurrentPage) { 1868 rotation = WORKSPACE_ROTATION; 1869 } else if (i > mCurrentPage) { 1870 rotation = -WORKSPACE_ROTATION; 1871 } 1872 1873 float translation = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1874 1875 oldAlphas[i] = cl.getAlpha(); 1876 newAlphas[i] = finalAlphaValue; 1877 if (animated) { 1878 oldTranslationXs[i] = cl.getTranslationX(); 1879 oldTranslationYs[i] = cl.getTranslationY(); 1880 oldScaleXs[i] = cl.getScaleX(); 1881 oldScaleYs[i] = cl.getScaleY(); 1882 oldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1883 oldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1884 oldRotationYs[i] = cl.getRotationY(); 1885 1886 newTranslationXs[i] = translation; 1887 newTranslationYs[i] = 0f; 1888 newScaleXs[i] = finalScaleFactor; 1889 newScaleYs[i] = finalScaleFactor; 1890 newBackgroundAlphas[i] = finalBackgroundAlpha; 1891 newBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1892 newRotationYs[i] = rotation; 1893 } else { 1894 cl.setTranslationX(translation); 1895 cl.setTranslationY(0.0f); 1896 cl.setScaleX(finalScaleFactor); 1897 cl.setScaleY(finalScaleFactor); 1898 cl.setBackgroundAlpha(0.0f); 1899 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1900 cl.setAlpha(finalAlphaValue); 1901 cl.setRotationY(rotation); 1902 mUnshrinkAnimationListener.onAnimationEnd(null); 1903 } 1904 } 1905 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 1906 boolean isLandscape = display.getWidth() > display.getHeight(); 1907 switch (mShrinkState) { 1908 // animating out 1909 case TOP: 1910 // customize 1911 if (animated) { 1912 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.65f : 0.62f); 1913 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.65f : 0.62f); 1914 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1915 } 1916 break; 1917 case MIDDLE: 1918 case SPRING_LOADED: 1919 if (animated) { 1920 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.49f : 0.46f); 1921 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.49f : 0.46f); 1922 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1923 } 1924 break; 1925 case BOTTOM_HIDDEN: 1926 case BOTTOM_VISIBLE: 1927 // all apps 1928 if (animated) { 1929 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.65f : 0.65f); 1930 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.65f : 0.65f); 1931 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1932 } 1933 break; 1934 } 1935 if (animated) { 1936 ValueAnimator animWithInterpolator = 1937 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1938 animWithInterpolator.setInterpolator(mZoomInInterpolator); 1939 1940 final float oldHorizontalWallpaperOffset = getHorizontalWallpaperOffset(); 1941 final float oldVerticalWallpaperOffset = getVerticalWallpaperOffset(); 1942 final float newHorizontalWallpaperOffset = wallpaperOffsetForCurrentScroll(); 1943 final float newVerticalWallpaperOffset = 0.5f; 1944 animWithInterpolator.addUpdateListener(new LauncherAnimatorUpdateListener() { 1945 public void onAnimationUpdate(float a, float b) { 1946 if (b == 0f) { 1947 // an optimization, but not required 1948 return; 1949 } 1950 fastInvalidate(); 1951 setHorizontalWallpaperOffset( 1952 a * oldHorizontalWallpaperOffset + b * newHorizontalWallpaperOffset); 1953 setVerticalWallpaperOffset( 1954 a * oldVerticalWallpaperOffset + b * newVerticalWallpaperOffset); 1955 for (int i = 0; i < screenCount; i++) { 1956 final CellLayout cl = (CellLayout) getChildAt(i); 1957 cl.fastInvalidate(); 1958 cl.setFastTranslationX( 1959 a * oldTranslationXs[i] + b * newTranslationXs[i]); 1960 cl.setFastTranslationY( 1961 a * oldTranslationYs[i] + b * newTranslationYs[i]); 1962 cl.setFastScaleX(a * oldScaleXs[i] + b * newScaleXs[i]); 1963 cl.setFastScaleY(a * oldScaleYs[i] + b * newScaleYs[i]); 1964 cl.setFastBackgroundAlpha( 1965 a * oldBackgroundAlphas[i] + b * newBackgroundAlphas[i]); 1966 cl.setBackgroundAlphaMultiplier(a * oldBackgroundAlphaMultipliers[i] + 1967 b * newBackgroundAlphaMultipliers[i]); 1968 cl.setFastAlpha(a * oldAlphas[i] + b * newAlphas[i]); 1969 } 1970 } 1971 }); 1972 1973 ValueAnimator rotationAnim = 1974 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1975 rotationAnim.setInterpolator(new DecelerateInterpolator(2.0f)); 1976 rotationAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1977 public void onAnimationUpdate(float a, float b) { 1978 // don't invalidate workspace because we did it above 1979 if (b == 0f) { 1980 // an optimization, but not required 1981 return; 1982 } 1983 for (int i = 0; i < screenCount; i++) { 1984 final CellLayout cl = (CellLayout) getChildAt(i); 1985 cl.setFastRotationY(a * oldRotationYs[i] + b * newRotationYs[i]); 1986 } 1987 } 1988 }); 1989 1990 mAnimator.playTogether(animWithInterpolator, rotationAnim); 1991 // If we call this when we're not animated, onAnimationEnd is never called on 1992 // the listener; make sure we only use the listener when we're actually animating 1993 mAnimator.addListener(mUnshrinkAnimationListener); 1994 mAnimator.start(); 1995 } else { 1996 setHorizontalWallpaperOffset(wallpaperOffsetForCurrentScroll()); 1997 setVerticalWallpaperOffset(0.5f); 1998 updateWallpaperOffsetImmediately(); 1999 } 2000 } 2001 2002 if (!springLoaded) { 2003 hideBackgroundGradient(); 2004 } 2005 } 2006 2007 /** 2008 * Draw the View v into the given Canvas. 2009 * 2010 * @param v the view to draw 2011 * @param destCanvas the canvas to draw on 2012 * @param padding the horizontal and vertical padding to use when drawing 2013 */ 2014 private void drawDragView(View v, Canvas destCanvas, int padding) { 2015 final Rect clipRect = mTempRect; 2016 v.getDrawingRect(clipRect); 2017 2018 // For a TextView, adjust the clip rect so that we don't include the text label 2019 if (v instanceof BubbleTextView) { 2020 final BubbleTextView tv = (BubbleTextView) v; 2021 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 2022 tv.getLayout().getLineTop(0); 2023 } else if (v instanceof TextView) { 2024 final TextView tv = (TextView) v; 2025 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 2026 tv.getLayout().getLineTop(0); 2027 } 2028 2029 // Draw the View into the bitmap. 2030 // The translate of scrollX and scrollY is necessary when drawing TextViews, because 2031 // they set scrollX and scrollY to large values to achieve centered text 2032 2033 destCanvas.save(); 2034 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 2035 destCanvas.clipRect(clipRect, Op.REPLACE); 2036 v.draw(destCanvas); 2037 destCanvas.restore(); 2038 } 2039 2040 /** 2041 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2042 * Responsibility for the bitmap is transferred to the caller. 2043 */ 2044 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 2045 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 2046 final Bitmap b = Bitmap.createBitmap( 2047 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 2048 2049 canvas.setBitmap(b); 2050 drawDragView(v, canvas, padding); 2051 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2052 return b; 2053 } 2054 2055 /** 2056 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2057 * Responsibility for the bitmap is transferred to the caller. 2058 */ 2059 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h) { 2060 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 2061 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 2062 canvas.setBitmap(b); 2063 2064 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 2065 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 2066 (h - padding) / (float) orig.getHeight()); 2067 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 2068 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 2069 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 2070 2071 // center the image 2072 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 2073 2074 Paint p = new Paint(); 2075 p.setFilterBitmap(true); 2076 canvas.drawBitmap(orig, src, dst, p); 2077 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2078 2079 return b; 2080 } 2081 2082 /** 2083 * Creates a drag outline to represent a drop (that we don't have the actual information for 2084 * yet). May be changed in the future to alter the drop outline slightly depending on the 2085 * clip description mime data. 2086 */ 2087 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 2088 Resources r = getResources(); 2089 final int outlineColor = r.getColor(R.color.drag_outline_color); 2090 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 2091 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 2092 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 2093 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 2094 final Bitmap b = Bitmap.createBitmap( 2095 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 2096 2097 canvas.setBitmap(b); 2098 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 2099 rectRadius, rectRadius, mExternalDragOutlinePaint); 2100 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2101 return b; 2102 } 2103 2104 /** 2105 * Returns a new bitmap to show when the given View is being dragged around. 2106 * Responsibility for the bitmap is transferred to the caller. 2107 */ 2108 private Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 2109 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 2110 final Bitmap b = Bitmap.createBitmap( 2111 mDragOutline.getWidth(), mDragOutline.getHeight(), Bitmap.Config.ARGB_8888); 2112 2113 canvas.setBitmap(b); 2114 canvas.drawBitmap(mDragOutline, 0, 0, null); 2115 drawDragView(v, canvas, padding); 2116 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 2117 2118 return b; 2119 } 2120 2121 void startDrag(CellLayout.CellInfo cellInfo) { 2122 View child = cellInfo.cell; 2123 2124 // Make sure the drag was started by a long press as opposed to a long click. 2125 if (!child.isInTouchMode()) { 2126 return; 2127 } 2128 2129 mDragInfo = cellInfo; 2130 2131 CellLayout current = (CellLayout) getChildAt(cellInfo.screen); 2132 current.onDragChild(child); 2133 2134 child.clearFocus(); 2135 child.setPressed(false); 2136 2137 final Canvas canvas = new Canvas(); 2138 2139 // We need to add extra padding to the bitmap to make room for the glow effect 2140 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2141 2142 // The outline is used to visualize where the item will land if dropped 2143 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 2144 2145 // The drag bitmap follows the touch point around on the screen 2146 final Bitmap b = createDragBitmap(child, canvas, bitmapPadding); 2147 2148 final int bmpWidth = b.getWidth(); 2149 final int bmpHeight = b.getHeight(); 2150 2151 child.getLocationOnScreen(mTempXY); 2152 final int screenX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 2153 final int screenY = (int) mTempXY[1] + (child.getHeight() - bmpHeight) / 2; 2154 2155 Rect dragRect = null; 2156 if (child instanceof BubbleTextView) { 2157 int iconSize = getResources().getDimensionPixelSize(R.dimen.app_icon_size); 2158 int top = child.getPaddingTop(); 2159 int left = (bmpWidth - iconSize) / 2; 2160 int right = left + iconSize; 2161 int bottom = top + iconSize; 2162 dragRect = new Rect(left, top, right, bottom); 2163 } 2164 2165 mDragController.startDrag(b, screenX, screenY, this, child.getTag(), 2166 DragController.DRAG_ACTION_MOVE, dragRect); 2167 b.recycle(); 2168 } 2169 2170 void addApplicationShortcut(ShortcutInfo info, int screen, int cellX, int cellY, 2171 boolean insertAtFirst, int intersectX, int intersectY) { 2172 final CellLayout cellLayout = (CellLayout) getChildAt(screen); 2173 View view = mLauncher.createShortcut(R.layout.application, cellLayout, (ShortcutInfo) info); 2174 2175 final int[] cellXY = new int[2]; 2176 cellLayout.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 2177 addInScreen(view, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 2178 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 2179 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2180 cellXY[0], cellXY[1]); 2181 } 2182 2183 private void setPositionForDropAnimation( 2184 View dragView, int dragViewX, int dragViewY, View parent, View child) { 2185 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 2186 2187 // Based on the position of the drag view, find the top left of the original view 2188 int viewX = dragViewX + (dragView.getWidth() - child.getMeasuredWidth()) / 2; 2189 int viewY = dragViewY + (dragView.getHeight() - child.getMeasuredHeight()) / 2; 2190 2191 // Set its old pos (in the new parent's coordinates); it will be animated 2192 // in animateViewIntoPosition after the next layout pass 2193 lp.oldX = viewX - (parent.getLeft() - mScrollX); 2194 lp.oldY = viewY - (parent.getTop() - mScrollY); 2195 } 2196 2197 /* 2198 * We should be careful that this method cannot result in any synchronous requestLayout() 2199 * calls, as it is called from onLayout(). 2200 */ 2201 public void animateViewIntoPosition(final View view) { 2202 final CellLayout parent = (CellLayout) view.getParent().getParent(); 2203 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2204 2205 // Convert the animation params to be relative to the Workspace, not the CellLayout 2206 final int fromX = lp.oldX + parent.getLeft(); 2207 final int fromY = lp.oldY + parent.getTop(); 2208 2209 final int dx = lp.x - lp.oldX; 2210 final int dy = lp.y - lp.oldY; 2211 2212 // Calculate the duration of the animation based on the object's distance 2213 final float dist = (float) Math.sqrt(dx*dx + dy*dy); 2214 final Resources res = getResources(); 2215 final float maxDist = (float) res.getInteger(R.integer.config_dropAnimMaxDist); 2216 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration); 2217 if (dist < maxDist) { 2218 duration *= mQuintEaseOutInterpolator.getInterpolation(dist / maxDist); 2219 } 2220 2221 if (mDropAnim != null) { 2222 mDropAnim.end(); 2223 } 2224 mDropAnim = new ValueAnimator(); 2225 mDropAnim.setInterpolator(mQuintEaseOutInterpolator); 2226 2227 // The view is invisible during the animation; we render it manually. 2228 mDropAnim.addListener(new AnimatorListenerAdapter() { 2229 public void onAnimationStart(Animator animation) { 2230 // Set this here so that we don't render it until the animation begins 2231 mDropView = view; 2232 } 2233 2234 public void onAnimationEnd(Animator animation) { 2235 if (mDropView != null) { 2236 mDropView.setVisibility(View.VISIBLE); 2237 mDropView = null; 2238 } 2239 } 2240 }); 2241 2242 mDropAnim.setDuration(duration); 2243 mDropAnim.setFloatValues(0.0f, 1.0f); 2244 mDropAnim.removeAllUpdateListeners(); 2245 mDropAnim.addUpdateListener(new AnimatorUpdateListener() { 2246 public void onAnimationUpdate(ValueAnimator animation) { 2247 final float percent = (Float) animation.getAnimatedValue(); 2248 // Invalidate the old position 2249 invalidate(mDropViewPos[0], mDropViewPos[1], 2250 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 2251 2252 mDropViewPos[0] = fromX + (int) (percent * dx + 0.5f); 2253 mDropViewPos[1] = fromY + (int) (percent * dy + 0.5f); 2254 invalidate(mDropViewPos[0], mDropViewPos[1], 2255 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 2256 } 2257 }); 2258 2259 mDropAnim.start(); 2260 } 2261 2262 /** 2263 * {@inheritDoc} 2264 */ 2265 public boolean acceptDrop(DragSource source, int x, int y, 2266 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 2267 2268 // If it's an external drop (e.g. from All Apps), check if it should be accepted 2269 if (source != this) { 2270 // Don't accept the drop if we're not over a screen at time of drop 2271 if (mDragTargetLayout == null || !mDragTargetLayout.getAcceptsDrops()) { 2272 return false; 2273 } 2274 2275 final CellLayout.CellInfo dragCellInfo = mDragInfo; 2276 final int spanX = dragCellInfo == null ? 1 : dragCellInfo.spanX; 2277 final int spanY = dragCellInfo == null ? 1 : dragCellInfo.spanY; 2278 2279 final View ignoreView = dragCellInfo == null ? null : dragCellInfo.cell; 2280 2281 // Don't accept the drop if there's no room for the item 2282 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 2283 mLauncher.showOutOfSpaceMessage(); 2284 return false; 2285 } 2286 } 2287 return true; 2288 } 2289 2290 boolean createUserFolderIfNecessary(View newView, CellLayout target, int originX, 2291 int originY, boolean external) { 2292 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2293 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2294 2295 // First we find the cell nearest to point at which the item is dropped, without 2296 // any consideration to whether there is an item there. 2297 mTargetCell = findNearestArea(originX, originY, 2298 spanX, spanY, target, 2299 mTargetCell); 2300 2301 View v = target.getChildAt(mTargetCell[0], mTargetCell[1]); 2302 boolean hasntMoved = mDragInfo != null && (mDragInfo.cellX == mTargetCell[0] && 2303 mDragInfo.cellY == mTargetCell[1]); 2304 2305 if (v == null || hasntMoved) return false; 2306 2307 final int screen = (mTargetCell == null) ? 2308 mDragInfo.screen : indexOfChild(target); 2309 2310 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2311 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2312 2313 if (aboveShortcut && willBecomeShortcut) { 2314 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2315 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2316 // if the drag started here, we need to remove it from the workspace 2317 if (!external) { 2318 int fromScreen = mDragInfo.screen; 2319 CellLayout sourceLayout = (CellLayout) getChildAt(fromScreen); 2320 sourceLayout.removeView(newView); 2321 } 2322 2323 target.removeView(v); 2324 FolderIcon fi = mLauncher.addFolder(screen, mTargetCell[0], mTargetCell[1]); 2325 fi.addItem(destInfo); 2326 fi.addItem(sourceInfo); 2327 return true; 2328 } 2329 return false; 2330 } 2331 2332 public void onDrop(DragSource source, int x, int y, int xOffset, int yOffset, 2333 DragView dragView, Object dragInfo) { 2334 2335 mDragViewVisualCenter = getDragViewVisualCenter(x, y, xOffset, yOffset, dragView, 2336 mDragViewVisualCenter); 2337 2338 // We want the point to be mapped to the dragTarget. 2339 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2340 2341 // When you are in customization mode and drag to a particular screen, make that the 2342 // new current/default screen, so any subsequent taps add items to that screen 2343 if (!mLauncher.isAllAppsVisible()) { 2344 int dragTargetIndex = indexOfChild(mDragTargetLayout); 2345 if (mCurrentPage != dragTargetIndex && (mIsSmall || mIsInUnshrinkAnimation)) { 2346 scrollToNewPageWithoutMovingPages(dragTargetIndex); 2347 } 2348 } 2349 2350 if (source != this) { 2351 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2352 (int) mDragViewVisualCenter[1] }; 2353 if ((mIsSmall || mIsInUnshrinkAnimation) && !mLauncher.isAllAppsVisible()) { 2354 // When the workspace is shrunk and the drop comes from customize, don't actually 2355 // add the item to the screen -- customize will do this itself 2356 ((ItemInfo) dragInfo).dropPos = touchXY; 2357 return; 2358 } 2359 onDropExternal(touchXY, dragInfo, mDragTargetLayout, false, dragView); 2360 } else if (mDragInfo != null) { 2361 final View cell = mDragInfo.cell; 2362 CellLayout dropTargetLayout = mDragTargetLayout; 2363 2364 // Handle the case where the user drops when in the scroll area. 2365 // This is treated as a drop on the adjacent page. 2366 if (dropTargetLayout == null && mInScrollArea) { 2367 if (mPendingScrollDirection == DragController.SCROLL_LEFT) { 2368 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage - 1); 2369 } else if (mPendingScrollDirection == DragController.SCROLL_RIGHT) { 2370 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage + 1); 2371 } 2372 } 2373 2374 if (dropTargetLayout != null) { 2375 // Move internally 2376 final int screen = (mTargetCell == null) ? 2377 mDragInfo.screen : indexOfChild(dropTargetLayout); 2378 2379 // If the item being dropped is a shortcut and the nearest drop cell also contains 2380 // a shortcut, then create a folder with the two shortcuts. 2381 if (createUserFolderIfNecessary(cell, dropTargetLayout, 2382 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], false)) { 2383 return; 2384 } 2385 2386 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2387 // we need to find the nearest cell location that is vacant 2388 mTargetCell = findNearestVacantArea((int) mDragViewVisualCenter[0], 2389 (int) mDragViewVisualCenter[1], mDragInfo.spanX, mDragInfo.spanY, cell, 2390 dropTargetLayout, mTargetCell); 2391 2392 if (screen != mCurrentPage) { 2393 snapToPage(screen); 2394 } 2395 2396 if (mTargetCell != null) { 2397 if (screen != mDragInfo.screen) { 2398 // Reparent the view 2399 ((CellLayout) getChildAt(mDragInfo.screen)).removeView(cell); 2400 addInScreen(cell, screen, mTargetCell[0], mTargetCell[1], 2401 mDragInfo.spanX, mDragInfo.spanY); 2402 } 2403 2404 // update the item's position after drop 2405 final ItemInfo info = (ItemInfo) cell.getTag(); 2406 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2407 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 2408 lp.cellX = mTargetCell[0]; 2409 lp.cellY = mTargetCell[1]; 2410 cell.setId(LauncherModel.getCellLayoutChildId(-1, mDragInfo.screen, 2411 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2412 2413 if (cell instanceof LauncherAppWidgetHostView) { 2414 final CellLayout cellLayout = dropTargetLayout; 2415 // We post this call so that the widget has a chance to be placed 2416 // in its final location 2417 2418 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2419 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2420 if (pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2421 final Runnable resizeRunnable = new Runnable() { 2422 public void run() { 2423 DragLayer dragLayer = (DragLayer) 2424 mLauncher.findViewById(R.id.drag_layer); 2425 dragLayer.addResizeFrame(info, hostView, 2426 cellLayout); 2427 } 2428 }; 2429 post(new Runnable() { 2430 public void run() { 2431 if (!isPageMoving()) { 2432 resizeRunnable.run(); 2433 } else { 2434 mDelayedResizeRunnable = resizeRunnable; 2435 } 2436 } 2437 }); 2438 } 2439 } 2440 2441 LauncherModel.moveItemInDatabase(mLauncher, info, 2442 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2443 lp.cellX, lp.cellY); 2444 } 2445 } 2446 2447 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2448 2449 int loc[] = new int[2]; 2450 getViewLocationRelativeToSelf(dragView, loc); 2451 2452 // Prepare it to be animated into its new position 2453 // This must be called after the view has been re-parented 2454 setPositionForDropAnimation(dragView, loc[0], loc[1], parent, cell); 2455 boolean animateDrop = !mWasSpringLoadedOnDragExit; 2456 parent.onDropChild(cell, animateDrop); 2457 } 2458 } 2459 2460 private void getViewLocationRelativeToSelf(View v, int[] location) { 2461 getLocationOnScreen(location); 2462 int x = location[0]; 2463 int y = location[1]; 2464 2465 v.getLocationOnScreen(location); 2466 int vX = location[0]; 2467 int vY = location[1]; 2468 2469 location[0] = vX - x; 2470 location[1] = vY - y; 2471 } 2472 2473 public void onDragEnter(DragSource source, int x, int y, int xOffset, 2474 int yOffset, DragView dragView, Object dragInfo) { 2475 mDragTargetLayout = null; // Reset the drag state 2476 2477 if (!mIsSmall) { 2478 mDragTargetLayout = getCurrentDropLayout(); 2479 mDragTargetLayout.onDragEnter(); 2480 showOutlines(); 2481 } 2482 } 2483 2484 public DropTarget getDropTargetDelegate(DragSource source, int x, int y, 2485 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 2486 2487 if (mIsSmall || mIsInUnshrinkAnimation) { 2488 // If we're shrunken, don't let anyone drag on folders/etc that are on the mini-screens 2489 return null; 2490 } 2491 // We may need to delegate the drag to a child view. If a 1x1 item 2492 // would land in a cell occupied by a DragTarget (e.g. a Folder), 2493 // then drag events should be handled by that child. 2494 2495 ItemInfo item = (ItemInfo) dragInfo; 2496 CellLayout currentLayout = getCurrentDropLayout(); 2497 2498 int dragPointX, dragPointY; 2499 if (item.spanX == 1 && item.spanY == 1) { 2500 // For a 1x1, calculate the drop cell exactly as in onDragOver 2501 dragPointX = x - xOffset; 2502 dragPointY = y - yOffset; 2503 } else { 2504 // Otherwise, use the exact drag coordinates 2505 dragPointX = x; 2506 dragPointY = y; 2507 } 2508 dragPointX += mScrollX - currentLayout.getLeft(); 2509 dragPointY += mScrollY - currentLayout.getTop(); 2510 2511 // If we are dragging over a cell that contains a DropTarget that will 2512 // accept the drop, delegate to that DropTarget. 2513 final int[] cellXY = mTempCell; 2514 currentLayout.estimateDropCell(dragPointX, dragPointY, item.spanX, item.spanY, cellXY); 2515 View child = currentLayout.getChildAt(cellXY[0], cellXY[1]); 2516 if (child instanceof DropTarget) { 2517 DropTarget target = (DropTarget)child; 2518 if (target.acceptDrop(source, x, y, xOffset, yOffset, dragView, dragInfo)) { 2519 return target; 2520 } 2521 } 2522 return null; 2523 } 2524 2525 /** 2526 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 2527 * in the returned structure related to the widgets that match the drop (or a null list if it is 2528 * a shortcut drop). If the drop is not accepted then a null structure is returned. 2529 */ 2530 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 2531 final LauncherModel model = mLauncher.getModel(); 2532 final ClipDescription desc = event.getClipDescription(); 2533 final int mimeTypeCount = desc.getMimeTypeCount(); 2534 for (int i = 0; i < mimeTypeCount; ++i) { 2535 final String mimeType = desc.getMimeType(i); 2536 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 2537 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 2538 } else { 2539 final List<WidgetMimeTypeHandlerData> widgets = 2540 model.resolveWidgetsForMimeType(mContext, mimeType); 2541 if (widgets.size() > 0) { 2542 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 2543 } 2544 } 2545 } 2546 return null; 2547 } 2548 2549 /** 2550 * Global drag and drop handler 2551 */ 2552 @Override 2553 public boolean onDragEvent(DragEvent event) { 2554 final ClipDescription desc = event.getClipDescription(); 2555 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 2556 final int[] pos = new int[2]; 2557 layout.getLocationOnScreen(pos); 2558 // We need to offset the drag coordinates to layout coordinate space 2559 final int x = (int) event.getX() - pos[0]; 2560 final int y = (int) event.getY() - pos[1]; 2561 2562 switch (event.getAction()) { 2563 case DragEvent.ACTION_DRAG_STARTED: { 2564 // Validate this drag 2565 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2566 if (test != null) { 2567 boolean isShortcut = (test.second == null); 2568 if (isShortcut) { 2569 // Check if we have enough space on this screen to add a new shortcut 2570 if (!layout.findCellForSpan(pos, 1, 1)) { 2571 Toast.makeText(mContext, mContext.getString(R.string.out_of_space), 2572 Toast.LENGTH_SHORT).show(); 2573 return false; 2574 } 2575 } 2576 } else { 2577 // Show error message if we couldn't accept any of the items 2578 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 2579 Toast.LENGTH_SHORT).show(); 2580 return false; 2581 } 2582 2583 // Create the drag outline 2584 // We need to add extra padding to the bitmap to make room for the glow effect 2585 final Canvas canvas = new Canvas(); 2586 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2587 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 2588 2589 // Show the current page outlines to indicate that we can accept this drop 2590 showOutlines(); 2591 layout.setIsDragOccuring(true); 2592 layout.onDragEnter(); 2593 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2594 2595 return true; 2596 } 2597 case DragEvent.ACTION_DRAG_LOCATION: 2598 // Visualize the drop location 2599 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2600 return true; 2601 case DragEvent.ACTION_DROP: { 2602 // Try and add any shortcuts 2603 final LauncherModel model = mLauncher.getModel(); 2604 final ClipData data = event.getClipData(); 2605 2606 // We assume that the mime types are ordered in descending importance of 2607 // representation. So we enumerate the list of mime types and alert the 2608 // user if any widgets can handle the drop. Only the most preferred 2609 // representation will be handled. 2610 pos[0] = x; 2611 pos[1] = y; 2612 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2613 if (test != null) { 2614 final int index = test.first; 2615 final List<WidgetMimeTypeHandlerData> widgets = test.second; 2616 final boolean isShortcut = (widgets == null); 2617 final String mimeType = desc.getMimeType(index); 2618 if (isShortcut) { 2619 final Intent intent = data.getItemAt(index).getIntent(); 2620 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 2621 onDropExternal(new int[] { x, y }, info, layout, false); 2622 } else { 2623 if (widgets.size() == 1) { 2624 // If there is only one item, then go ahead and add and configure 2625 // that widget 2626 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 2627 final PendingAddWidgetInfo createInfo = 2628 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 2629 mLauncher.addAppWidgetFromDrop(createInfo, mCurrentPage, pos); 2630 } else { 2631 // Show the widget picker dialog if there is more than one widget 2632 // that can handle this data type 2633 final InstallWidgetReceiver.WidgetListAdapter adapter = 2634 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 2635 data, widgets, layout, mCurrentPage, pos); 2636 final AlertDialog.Builder builder = 2637 new AlertDialog.Builder(mContext); 2638 builder.setAdapter(adapter, adapter); 2639 builder.setCancelable(true); 2640 builder.setTitle(mContext.getString( 2641 R.string.external_drop_widget_pick_title)); 2642 builder.setIcon(R.drawable.ic_no_applications); 2643 builder.show(); 2644 } 2645 } 2646 } 2647 return true; 2648 } 2649 case DragEvent.ACTION_DRAG_ENDED: 2650 // Hide the page outlines after the drop 2651 layout.setIsDragOccuring(false); 2652 layout.onDragExit(); 2653 hideOutlines(); 2654 return true; 2655 } 2656 return super.onDragEvent(event); 2657 } 2658 2659 /* 2660 * 2661 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2662 * coordinate space. The argument xy is modified with the return result. 2663 * 2664 */ 2665 void mapPointFromSelfToChild(View v, float[] xy) { 2666 mapPointFromSelfToChild(v, xy, null); 2667 } 2668 2669 /* 2670 * 2671 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2672 * coordinate space. The argument xy is modified with the return result. 2673 * 2674 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2675 * computing it itself; we use this to avoid redundant matrix inversions in 2676 * findMatchingPageForDragOver 2677 * 2678 */ 2679 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2680 if (cachedInverseMatrix == null) { 2681 v.getMatrix().invert(mTempInverseMatrix); 2682 cachedInverseMatrix = mTempInverseMatrix; 2683 } 2684 xy[0] = xy[0] + mScrollX - v.getLeft(); 2685 xy[1] = xy[1] + mScrollY - v.getTop(); 2686 cachedInverseMatrix.mapPoints(xy); 2687 } 2688 2689 /* 2690 * 2691 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2692 * the parent View's coordinate space. The argument xy is modified with the return result. 2693 * 2694 */ 2695 void mapPointFromChildToSelf(View v, float[] xy) { 2696 v.getMatrix().mapPoints(xy); 2697 xy[0] -= (mScrollX - v.getLeft()); 2698 xy[1] -= (mScrollY - v.getTop()); 2699 } 2700 2701 static private float squaredDistance(float[] point1, float[] point2) { 2702 float distanceX = point1[0] - point2[0]; 2703 float distanceY = point2[1] - point2[1]; 2704 return distanceX * distanceX + distanceY * distanceY; 2705 } 2706 2707 /* 2708 * 2709 * Returns true if the passed CellLayout cl overlaps with dragView 2710 * 2711 */ 2712 boolean overlaps(CellLayout cl, DragView dragView, 2713 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2714 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2715 final float[] draggedItemTopLeft = mTempDragCoordinates; 2716 draggedItemTopLeft[0] = dragViewX; 2717 draggedItemTopLeft[1] = dragViewY; 2718 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2719 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2720 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2721 2722 // Transform the dragged item's top left coordinates 2723 // to the CellLayout's local coordinates 2724 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2725 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2726 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2727 2728 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2729 // Transform the dragged item's bottom right coordinates 2730 // to the CellLayout's local coordinates 2731 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2732 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2733 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2734 2735 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2736 float overlap = (overlapRegionRight - overlapRegionLeft) * 2737 (overlapRegionBottom - overlapRegionTop); 2738 if (overlap > 0) { 2739 return true; 2740 } 2741 } 2742 } 2743 return false; 2744 } 2745 2746 /* 2747 * 2748 * This method returns the CellLayout that is currently being dragged to. In order to drag 2749 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2750 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2751 * 2752 * Return null if no CellLayout is currently being dragged over 2753 * 2754 */ 2755 private CellLayout findMatchingPageForDragOver( 2756 DragView dragView, int originX, int originY, int offsetX, int offsetY) { 2757 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2758 // with the item being dragged and then choose the one that's closest to the touch point 2759 final int screenCount = getChildCount(); 2760 CellLayout bestMatchingScreen = null; 2761 float smallestDistSoFar = Float.MAX_VALUE; 2762 2763 for (int i = 0; i < screenCount; i++) { 2764 CellLayout cl = (CellLayout)getChildAt(i); 2765 2766 final float[] touchXy = mTempTouchCoordinates; 2767 touchXy[0] = originX + offsetX; 2768 touchXy[1] = originY + offsetY; 2769 2770 // Transform the touch coordinates to the CellLayout's local coordinates 2771 // If the touch point is within the bounds of the cell layout, we can return immediately 2772 cl.getMatrix().invert(mTempInverseMatrix); 2773 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2774 2775 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2776 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2777 return cl; 2778 } 2779 2780 if (overlaps(cl, dragView, originX, originY, mTempInverseMatrix)) { 2781 // Get the center of the cell layout in screen coordinates 2782 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2783 cellLayoutCenter[0] = cl.getWidth()/2; 2784 cellLayoutCenter[1] = cl.getHeight()/2; 2785 mapPointFromChildToSelf(cl, cellLayoutCenter); 2786 2787 touchXy[0] = originX + offsetX; 2788 touchXy[1] = originY + offsetY; 2789 2790 // Calculate the distance between the center of the CellLayout 2791 // and the touch point 2792 float dist = squaredDistance(touchXy, cellLayoutCenter); 2793 2794 if (dist < smallestDistSoFar) { 2795 smallestDistSoFar = dist; 2796 bestMatchingScreen = cl; 2797 } 2798 } 2799 } 2800 return bestMatchingScreen; 2801 } 2802 2803 // This is used to compute the visual center of the dragView. This point is then 2804 // used to visualize drop locations and determine where to drop an item. The idea is that 2805 // the visual center represents the user's interpretation of where the item is, and hence 2806 // is the appropriate point to use when determining drop location. 2807 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2808 DragView dragView, float[] recycle) { 2809 float res[]; 2810 if (recycle == null) { 2811 res = new float[2]; 2812 } else { 2813 res = recycle; 2814 } 2815 2816 // First off, the drag view has been shifted in a way that is not represented in the 2817 // x and y values or the x/yOffsets. Here we account for that shift. 2818 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2819 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2820 2821 // These represent the visual top and left of drag view if a dragRect was provided. 2822 // If a dragRect was not provided, then they correspond to the actual view left and 2823 // top, as the dragRect is in that case taken to be the entire dragView. 2824 // R.dimen.dragViewOffsetY. 2825 int left = x - xOffset; 2826 int top = y - yOffset; 2827 2828 // In order to find the visual center, we shift by half the dragRect 2829 res[0] = left + dragView.getDragRegion().width() / 2; 2830 res[1] = top + dragView.getDragRegion().height() / 2; 2831 2832 return res; 2833 } 2834 2835 public void onDragOver(DragSource source, int x, int y, int xOffset, int yOffset, 2836 DragView dragView, Object dragInfo) { 2837 // When touch is inside the scroll area, skip dragOver actions for the current screen 2838 if (!mInScrollArea) { 2839 CellLayout layout; 2840 int left = x - xOffset; 2841 int top = y - yOffset; 2842 2843 mDragViewVisualCenter = getDragViewVisualCenter(x, y, xOffset, yOffset, dragView, 2844 mDragViewVisualCenter); 2845 2846 boolean shrunken = mIsSmall || mIsInUnshrinkAnimation; 2847 if (shrunken) { 2848 mLastDragView = dragView; 2849 mLastDragOriginX = left; 2850 mLastDragOriginY = top; 2851 mLastDragXOffset = xOffset; 2852 mLastDragYOffset = yOffset; 2853 layout = findMatchingPageForDragOver(dragView, left, top, xOffset, yOffset); 2854 2855 if (layout != mDragTargetLayout) { 2856 if (mDragTargetLayout != null) { 2857 mDragTargetLayout.setIsDragOverlapping(false); 2858 mSpringLoadedDragController.onDragExit(); 2859 } 2860 mDragTargetLayout = layout; 2861 // In spring-loaded mode, we still want the user to be able to hover over a 2862 // full screen (which is traditionally set to not accept drops) if they want to 2863 // get to pages beyond the screen that is full. 2864 boolean allowDragOver = (mDragTargetLayout != null) && 2865 (mDragTargetLayout.getAcceptsDrops() || 2866 (mShrinkState == ShrinkState.SPRING_LOADED)); 2867 if (allowDragOver) { 2868 mDragTargetLayout.setIsDragOverlapping(true); 2869 mSpringLoadedDragController.onDragEnter( 2870 mDragTargetLayout, mShrinkState == ShrinkState.SPRING_LOADED); 2871 } 2872 } 2873 } else { 2874 layout = getCurrentDropLayout(); 2875 if (layout != mDragTargetLayout) { 2876 if (mDragTargetLayout != null) { 2877 mDragTargetLayout.onDragExit(); 2878 } 2879 layout.onDragEnter(); 2880 mDragTargetLayout = layout; 2881 } 2882 } 2883 if (!shrunken || mShrinkState == ShrinkState.SPRING_LOADED) { 2884 layout = getCurrentDropLayout(); 2885 2886 final ItemInfo item = (ItemInfo)dragInfo; 2887 if (dragInfo instanceof LauncherAppWidgetInfo) { 2888 LauncherAppWidgetInfo widgetInfo = (LauncherAppWidgetInfo)dragInfo; 2889 2890 if (widgetInfo.spanX == -1) { 2891 // Calculate the grid spans needed to fit this widget 2892 int[] spans = layout.rectToCell( 2893 widgetInfo.minWidth, widgetInfo.minHeight, null); 2894 item.spanX = spans[0]; 2895 item.spanY = spans[1]; 2896 } 2897 } 2898 2899 if (mDragTargetLayout != null) { 2900 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2901 // We want the point to be mapped to the dragTarget. 2902 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2903 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2904 (int) mDragViewVisualCenter[0], 2905 (int) mDragViewVisualCenter[1], 2906 item.spanX, item.spanY); 2907 } 2908 } 2909 } 2910 } 2911 2912 private void doDragExit() { 2913 mWasSpringLoadedOnDragExit = mShrinkState == ShrinkState.SPRING_LOADED; 2914 if (mDragTargetLayout != null) { 2915 mDragTargetLayout.onDragExit(); 2916 } 2917 if (!mIsPageMoving) { 2918 hideOutlines(); 2919 } 2920 if (mShrinkState == ShrinkState.SPRING_LOADED) { 2921 mLauncher.exitSpringLoadedDragMode(); 2922 } 2923 clearAllHovers(); 2924 } 2925 2926 public void onDragExit(DragSource source, int x, int y, int xOffset, 2927 int yOffset, DragView dragView, Object dragInfo) { 2928 doDragExit(); 2929 } 2930 2931 @Override 2932 public void getHitRect(Rect outRect) { 2933 // We want the workspace to have the whole area of the display (it will find the correct 2934 // cell layout to drop to in the existing drag/drop logic. 2935 final Display d = mLauncher.getWindowManager().getDefaultDisplay(); 2936 outRect.set(0, 0, d.getWidth(), d.getHeight()); 2937 } 2938 2939 /** 2940 * Add the item specified by dragInfo to the given layout. 2941 * @return true if successful 2942 */ 2943 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2944 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2945 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2946 return true; 2947 } 2948 mLauncher.showOutOfSpaceMessage(); 2949 return false; 2950 } 2951 2952 private void onDropExternal(int[] touchXY, Object dragInfo, 2953 CellLayout cellLayout, boolean insertAtFirst) { 2954 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 2955 } 2956 2957 /** 2958 * Drop an item that didn't originate on one of the workspace screens. 2959 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2960 * come from another app altogether. 2961 * 2962 * NOTE: This can also be called when we are outside of a drag event, when we want 2963 * to add an item to one of the workspace screens. 2964 */ 2965 private void onDropExternal(int[] touchXY, Object dragInfo, 2966 CellLayout cellLayout, boolean insertAtFirst, DragView dragView) { 2967 int screen = indexOfChild(cellLayout); 2968 if (dragInfo instanceof PendingAddItemInfo) { 2969 PendingAddItemInfo info = (PendingAddItemInfo) dragInfo; 2970 // When dragging and dropping from customization tray, we deal with creating 2971 // widgets/shortcuts/folders in a slightly different way 2972 switch (info.itemType) { 2973 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 2974 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) info, screen, touchXY); 2975 break; 2976 case LauncherSettings.Favorites.ITEM_TYPE_LIVE_FOLDER: 2977 mLauncher.addLiveFolderFromDrop(info.componentName, screen, touchXY); 2978 break; 2979 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2980 mLauncher.processShortcutFromDrop(info.componentName, screen, touchXY); 2981 break; 2982 default: 2983 throw new IllegalStateException("Unknown item type: " + info.itemType); 2984 } 2985 cellLayout.onDragExit(); 2986 } else { 2987 // This is for other drag/drop cases, like dragging from All Apps 2988 ItemInfo info = (ItemInfo) dragInfo; 2989 View view = null; 2990 2991 switch (info.itemType) { 2992 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 2993 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2994 if (info.container == NO_ID && info instanceof ApplicationInfo) { 2995 // Came from all apps -- make a copy 2996 info = new ShortcutInfo((ApplicationInfo) info); 2997 } 2998 view = mLauncher.createShortcut(R.layout.application, cellLayout, 2999 (ShortcutInfo) info); 3000 break; 3001 case LauncherSettings.Favorites.ITEM_TYPE_USER_FOLDER: 3002 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, 3003 cellLayout, (UserFolderInfo) info, mIconCache); 3004 break; 3005 default: 3006 throw new IllegalStateException("Unknown item type: " + info.itemType); 3007 } 3008 3009 // If the item being dropped is a shortcut and the nearest drop cell also contains 3010 // a shortcut, then create a folder with the two shortcuts. 3011 if (touchXY != null && createUserFolderIfNecessary(view, cellLayout, touchXY[0], 3012 touchXY[1], true)) { 3013 return; 3014 } 3015 3016 mTargetCell = new int[2]; 3017 if (touchXY != null) { 3018 // when dragging and dropping, just find the closest free spot 3019 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], 1, 1, null, cellLayout, 3020 mTargetCell); 3021 } else { 3022 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3023 } 3024 addInScreen(view, indexOfChild(cellLayout), mTargetCell[0], 3025 mTargetCell[1], info.spanX, info.spanY, insertAtFirst); 3026 boolean animateDrop = !mWasSpringLoadedOnDragExit; 3027 cellLayout.onDropChild(view, animateDrop); 3028 cellLayout.animateDrop(); 3029 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 3030 cellLayout.getChildrenLayout().measureChild(view); 3031 3032 if (dragView != null) { 3033 // we have the visual center of the drag view, we need to find the actual 3034 // left and top of the dragView. 3035 int loc[] = new int[2]; 3036 getViewLocationRelativeToSelf(dragView, loc); 3037 setPositionForDropAnimation(dragView, loc[0], loc[1], cellLayout, view); 3038 } 3039 3040 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 3041 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 3042 lp.cellX, lp.cellY); 3043 } 3044 } 3045 3046 /** 3047 * Return the current {@link CellLayout}, correctly picking the destination 3048 * screen while a scroll is in progress. 3049 */ 3050 public CellLayout getCurrentDropLayout() { 3051 return (CellLayout) getChildAt(mNextPage == INVALID_PAGE ? mCurrentPage : mNextPage); 3052 } 3053 3054 /** 3055 * Return the current CellInfo describing our current drag; this method exists 3056 * so that Launcher can sync this object with the correct info when the activity is created/ 3057 * destroyed 3058 * 3059 */ 3060 public CellLayout.CellInfo getDragInfo() { 3061 return mDragInfo; 3062 } 3063 3064 /** 3065 * Calculate the nearest cell where the given object would be dropped. 3066 * 3067 * pixelX and pixelY should be in the coordinate system of layout 3068 */ 3069 private int[] findNearestVacantArea(int pixelX, int pixelY, 3070 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 3071 return layout.findNearestVacantArea( 3072 pixelX, pixelY, spanX, spanY, ignoreView, recycle); 3073 } 3074 3075 /** 3076 * Calculate the nearest cell where the given object would be dropped. 3077 * 3078 * pixelX and pixelY should be in the coordinate system of layout 3079 */ 3080 private int[] findNearestArea(int pixelX, int pixelY, 3081 int spanX, int spanY, CellLayout layout, int[] recycle) { 3082 return layout.findNearestArea( 3083 pixelX, pixelY, spanX, spanY, recycle); 3084 } 3085 3086 void setLauncher(Launcher launcher) { 3087 mLauncher = launcher; 3088 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3089 3090 mCustomizationDrawer = mLauncher.findViewById(R.id.customization_drawer); 3091 if (mCustomizationDrawer != null) { 3092 mCustomizationDrawerContent = 3093 mCustomizationDrawer.findViewById(com.android.internal.R.id.tabcontent); 3094 } 3095 } 3096 3097 public void setDragController(DragController dragController) { 3098 mDragController = dragController; 3099 } 3100 3101 /** 3102 * Called at the end of a drag which originated on the workspace. 3103 */ 3104 public void onDropCompleted(View target, Object dragInfo, boolean success) { 3105 if (success) { 3106 if (target != this && mDragInfo != null) { 3107 final CellLayout cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3108 cellLayout.removeView(mDragInfo.cell); 3109 if (mDragInfo.cell instanceof DropTarget) { 3110 mDragController.removeDropTarget((DropTarget)mDragInfo.cell); 3111 } 3112 // final Object tag = mDragInfo.cell.getTag(); 3113 } 3114 } else if (mDragInfo != null) { 3115 // NOTE: When 'success' is true, onDragExit is called by the DragController before 3116 // calling onDropCompleted(). We call it ourselves here, but maybe this should be 3117 // moved into DragController.cancelDrag(). 3118 doDragExit(); 3119 ((CellLayout) getChildAt(mDragInfo.screen)).onDropChild(mDragInfo.cell, false); 3120 } 3121 mLauncher.unlockScreenOrientation(); 3122 mDragOutline = null; 3123 mDragInfo = null; 3124 } 3125 3126 @Override 3127 public void onDragViewVisible() { 3128 ((View) mDragInfo.cell).setVisibility(View.GONE); 3129 } 3130 3131 public boolean isDropEnabled() { 3132 return true; 3133 } 3134 3135 @Override 3136 protected void onRestoreInstanceState(Parcelable state) { 3137 super.onRestoreInstanceState(state); 3138 Launcher.setScreen(mCurrentPage); 3139 } 3140 3141 @Override 3142 public void scrollLeft() { 3143 if (!mIsSmall && !mIsInUnshrinkAnimation) { 3144 super.scrollLeft(); 3145 } 3146 } 3147 3148 @Override 3149 public void scrollRight() { 3150 if (!mIsSmall && !mIsInUnshrinkAnimation) { 3151 super.scrollRight(); 3152 } 3153 } 3154 3155 @Override 3156 public void onEnterScrollArea(int direction) { 3157 if (!mIsSmall && !mIsInUnshrinkAnimation) { 3158 mInScrollArea = true; 3159 mPendingScrollDirection = direction; 3160 3161 final int page = mCurrentPage + (direction == DragController.SCROLL_LEFT ? -1 : 1); 3162 final CellLayout layout = (CellLayout) getChildAt(page); 3163 3164 if (layout != null) { 3165 layout.setIsDragOverlapping(true); 3166 3167 if (mDragTargetLayout != null) { 3168 mDragTargetLayout.onDragExit(); 3169 mDragTargetLayout = null; 3170 } 3171 // In portrait, need to redraw the edge glow when entering the scroll area 3172 if (getHeight() > getWidth()) { 3173 invalidate(); 3174 } 3175 } 3176 } 3177 } 3178 3179 private void clearAllHovers() { 3180 final int childCount = getChildCount(); 3181 for (int i = 0; i < childCount; i++) { 3182 ((CellLayout) getChildAt(i)).setIsDragOverlapping(false); 3183 } 3184 mSpringLoadedDragController.onDragExit(); 3185 3186 // In portrait, workspace is responsible for drawing the edge glow on adjacent pages, 3187 // so we need to redraw the workspace when this may have changed. 3188 if (getHeight() > getWidth()) { 3189 invalidate(); 3190 } 3191 } 3192 3193 @Override 3194 public void onExitScrollArea() { 3195 if (mInScrollArea) { 3196 mInScrollArea = false; 3197 mPendingScrollDirection = DragController.SCROLL_NONE; 3198 clearAllHovers(); 3199 } 3200 } 3201 3202 public Folder getFolderForTag(Object tag) { 3203 final int screenCount = getChildCount(); 3204 for (int screen = 0; screen < screenCount; screen++) { 3205 ViewGroup currentScreen = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 3206 int count = currentScreen.getChildCount(); 3207 for (int i = 0; i < count; i++) { 3208 View child = currentScreen.getChildAt(i); 3209 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 3210 if (lp.cellHSpan == 4 && lp.cellVSpan == 4 && child instanceof Folder) { 3211 Folder f = (Folder) child; 3212 if (f.getInfo() == tag && f.getInfo().opened) { 3213 return f; 3214 } 3215 } 3216 } 3217 } 3218 return null; 3219 } 3220 3221 public View getViewForTag(Object tag) { 3222 int screenCount = getChildCount(); 3223 for (int screen = 0; screen < screenCount; screen++) { 3224 ViewGroup currentScreen = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 3225 int count = currentScreen.getChildCount(); 3226 for (int i = 0; i < count; i++) { 3227 View child = currentScreen.getChildAt(i); 3228 if (child.getTag() == tag) { 3229 return child; 3230 } 3231 } 3232 } 3233 return null; 3234 } 3235 3236 void clearDropTargets() { 3237 final int screenCount = getChildCount(); 3238 3239 for (int i = 0; i < screenCount; i++) { 3240 final CellLayout layoutParent = (CellLayout) getChildAt(i); 3241 final ViewGroup layout = layoutParent.getChildrenLayout(); 3242 int childCount = layout.getChildCount(); 3243 for (int j = 0; j < childCount; j++) { 3244 View v = layout.getChildAt(j); 3245 if (v instanceof DropTarget) { 3246 mDragController.removeDropTarget((DropTarget) v); 3247 } 3248 } 3249 } 3250 } 3251 3252 void removeItems(final ArrayList<ApplicationInfo> apps) { 3253 final int screenCount = getChildCount(); 3254 final PackageManager manager = getContext().getPackageManager(); 3255 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3256 3257 final HashSet<String> packageNames = new HashSet<String>(); 3258 final int appCount = apps.size(); 3259 for (int i = 0; i < appCount; i++) { 3260 packageNames.add(apps.get(i).componentName.getPackageName()); 3261 } 3262 3263 for (int i = 0; i < screenCount; i++) { 3264 final CellLayout layoutParent = (CellLayout) getChildAt(i); 3265 final ViewGroup layout = layoutParent.getChildrenLayout(); 3266 3267 // Avoid ANRs by treating each screen separately 3268 post(new Runnable() { 3269 public void run() { 3270 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3271 childrenToRemove.clear(); 3272 3273 int childCount = layout.getChildCount(); 3274 for (int j = 0; j < childCount; j++) { 3275 final View view = layout.getChildAt(j); 3276 Object tag = view.getTag(); 3277 3278 if (tag instanceof ShortcutInfo) { 3279 final ShortcutInfo info = (ShortcutInfo) tag; 3280 final Intent intent = info.intent; 3281 final ComponentName name = intent.getComponent(); 3282 3283 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3284 for (String packageName: packageNames) { 3285 if (packageName.equals(name.getPackageName())) { 3286 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3287 childrenToRemove.add(view); 3288 } 3289 } 3290 } 3291 } else if (tag instanceof UserFolderInfo) { 3292 final UserFolderInfo info = (UserFolderInfo) tag; 3293 final ArrayList<ShortcutInfo> contents = info.contents; 3294 final ArrayList<ShortcutInfo> toRemove = new ArrayList<ShortcutInfo>(1); 3295 final int contentsCount = contents.size(); 3296 boolean removedFromFolder = false; 3297 3298 for (int k = 0; k < contentsCount; k++) { 3299 final ShortcutInfo appInfo = contents.get(k); 3300 final Intent intent = appInfo.intent; 3301 final ComponentName name = intent.getComponent(); 3302 3303 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3304 for (String packageName: packageNames) { 3305 if (packageName.equals(name.getPackageName())) { 3306 toRemove.add(appInfo); 3307 LauncherModel.deleteItemFromDatabase(mLauncher, appInfo); 3308 removedFromFolder = true; 3309 } 3310 } 3311 } 3312 } 3313 3314 contents.removeAll(toRemove); 3315 if (removedFromFolder) { 3316 final Folder folder = getOpenFolder(); 3317 if (folder != null) 3318 folder.notifyDataSetChanged(); 3319 } 3320 } else if (tag instanceof LiveFolderInfo) { 3321 final LiveFolderInfo info = (LiveFolderInfo) tag; 3322 final Uri uri = info.uri; 3323 final ProviderInfo providerInfo = manager.resolveContentProvider( 3324 uri.getAuthority(), 0); 3325 3326 if (providerInfo != null) { 3327 for (String packageName: packageNames) { 3328 if (packageName.equals(providerInfo.packageName)) { 3329 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3330 childrenToRemove.add(view); 3331 } 3332 } 3333 } 3334 } else if (tag instanceof LauncherAppWidgetInfo) { 3335 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3336 final AppWidgetProviderInfo provider = 3337 widgets.getAppWidgetInfo(info.appWidgetId); 3338 if (provider != null) { 3339 for (String packageName: packageNames) { 3340 if (packageName.equals(provider.provider.getPackageName())) { 3341 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3342 childrenToRemove.add(view); 3343 } 3344 } 3345 } 3346 } 3347 } 3348 3349 childCount = childrenToRemove.size(); 3350 for (int j = 0; j < childCount; j++) { 3351 View child = childrenToRemove.get(j); 3352 // Note: We can not remove the view directly from CellLayoutChildren as this 3353 // does not re-mark the spaces as unoccupied. 3354 layoutParent.removeViewInLayout(child); 3355 if (child instanceof DropTarget) { 3356 mDragController.removeDropTarget((DropTarget)child); 3357 } 3358 } 3359 3360 if (childCount > 0) { 3361 layout.requestLayout(); 3362 layout.invalidate(); 3363 } 3364 } 3365 }); 3366 } 3367 } 3368 3369 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3370 final int screenCount = getChildCount(); 3371 for (int i = 0; i < screenCount; i++) { 3372 final ViewGroup layout = ((CellLayout) getChildAt(i)).getChildrenLayout(); 3373 int childCount = layout.getChildCount(); 3374 for (int j = 0; j < childCount; j++) { 3375 final View view = layout.getChildAt(j); 3376 Object tag = view.getTag(); 3377 if (tag instanceof ShortcutInfo) { 3378 ShortcutInfo info = (ShortcutInfo)tag; 3379 // We need to check for ACTION_MAIN otherwise getComponent() might 3380 // return null for some shortcuts (for instance, for shortcuts to 3381 // web pages.) 3382 final Intent intent = info.intent; 3383 final ComponentName name = intent.getComponent(); 3384 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3385 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3386 final int appCount = apps.size(); 3387 for (int k = 0; k < appCount; k++) { 3388 ApplicationInfo app = apps.get(k); 3389 if (app.componentName.equals(name)) { 3390 info.setIcon(mIconCache.getIcon(info.intent)); 3391 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 3392 new FastBitmapDrawable(info.getIcon(mIconCache)), 3393 null, null); 3394 } 3395 } 3396 } 3397 } 3398 } 3399 } 3400 } 3401 3402 void moveToDefaultScreen(boolean animate) { 3403 if (mIsSmall || mIsInUnshrinkAnimation) { 3404 mLauncher.showWorkspace(animate, (CellLayout)getChildAt(mDefaultPage)); 3405 } else if (animate) { 3406 snapToPage(mDefaultPage); 3407 } else { 3408 setCurrentPage(mDefaultPage); 3409 } 3410 getChildAt(mDefaultPage).requestFocus(); 3411 } 3412 3413 void setIndicators(Drawable previous, Drawable next) { 3414 mPreviousIndicator = previous; 3415 mNextIndicator = next; 3416 previous.setLevel(mCurrentPage); 3417 next.setLevel(mCurrentPage); 3418 } 3419 3420 @Override 3421 public void syncPages() { 3422 } 3423 3424 @Override 3425 public void syncPageItems(int page) { 3426 } 3427 3428} 3429