Workspace.java revision 10b1737910ea7890ca95bbbe5363fd5aa513b856
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 com.android.launcher.R; 20import com.android.launcher2.InstallWidgetReceiver.WidgetMimeTypeHandlerData; 21 22import android.animation.Animator; 23import android.animation.AnimatorListenerAdapter; 24import android.animation.AnimatorSet; 25import android.animation.ObjectAnimator; 26import android.animation.TimeInterpolator; 27import android.animation.ValueAnimator; 28import android.animation.Animator.AnimatorListener; 29import android.animation.ValueAnimator.AnimatorUpdateListener; 30import android.app.AlertDialog; 31import android.app.WallpaperManager; 32import android.appwidget.AppWidgetManager; 33import android.appwidget.AppWidgetProviderInfo; 34import android.content.ClipData; 35import android.content.ClipDescription; 36import android.content.ComponentName; 37import android.content.Context; 38import android.content.Intent; 39import android.content.pm.PackageManager; 40import android.content.pm.ProviderInfo; 41import android.content.res.Resources; 42import android.content.res.TypedArray; 43import android.graphics.Bitmap; 44import android.graphics.Camera; 45import android.graphics.Canvas; 46import android.graphics.Matrix; 47import android.graphics.Paint; 48import android.graphics.Rect; 49import android.graphics.RectF; 50import android.graphics.Region.Op; 51import android.graphics.drawable.Drawable; 52import android.net.Uri; 53import android.os.IBinder; 54import android.os.Parcelable; 55import android.util.AttributeSet; 56import android.util.Log; 57import android.util.Pair; 58import android.view.Display; 59import android.view.DragEvent; 60import android.view.MotionEvent; 61import android.view.View; 62import android.view.ViewGroup; 63import android.view.animation.DecelerateInterpolator; 64import android.widget.TabHost; 65import android.widget.TabWidget; 66import android.widget.TextView; 67import android.widget.Toast; 68 69import java.util.ArrayList; 70import java.util.HashSet; 71import java.util.List; 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/onDragStartedWithItemMinSize) 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 onDragStartedWithItemSpans(int spanX, int spanY, Bitmap b) { 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 CellLayout cl = (CellLayout) getChildAt(0); 1750 int[] desiredSize = cl.cellSpansToSize(spanX, spanY); 1751 // The outline is used to visualize where the item will land if dropped 1752 mDragOutline = createDragOutline(b, canvas, bitmapPadding, desiredSize[0], desiredSize[1]); 1753 1754 updateWhichPagesAcceptDropsDuringDrag(mShrinkState, spanX, spanY); 1755 } 1756 1757 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1758 // never dragged over 1759 public void onDragStopped(boolean success) { 1760 mLastDragView = null; 1761 // In the success case, DragController has already called onDragExit() 1762 if (!success) { 1763 doDragExit(); 1764 } 1765 mIsDragInProcess = false; 1766 updateWhichPagesAcceptDrops(mShrinkState); 1767 } 1768 1769 // We call this when we trigger an unshrink by clicking on the CellLayout cl 1770 public void unshrink(CellLayout clThatWasClicked) { 1771 unshrink(clThatWasClicked, false); 1772 } 1773 1774 public void unshrink(CellLayout clThatWasClicked, boolean springLoaded) { 1775 int newCurrentPage = indexOfChild(clThatWasClicked); 1776 if (mIsSmall) { 1777 if (springLoaded) { 1778 setLayoutScale(SPRING_LOADED_DRAG_SHRINK_FACTOR); 1779 } 1780 scrollToNewPageWithoutMovingPages(newCurrentPage); 1781 unshrink(true, springLoaded); 1782 } 1783 } 1784 1785 1786 public void enterSpringLoadedDragMode(CellLayout clThatWasClicked) { 1787 mShrinkState = ShrinkState.SPRING_LOADED; 1788 unshrink(clThatWasClicked, true); 1789 mDragTargetLayout.onDragEnter(); 1790 } 1791 1792 public void exitSpringLoadedDragMode(ShrinkState shrinkState) { 1793 shrink(shrinkState); 1794 if (mDragTargetLayout != null) { 1795 mDragTargetLayout.onDragExit(); 1796 } 1797 } 1798 1799 public void exitWidgetResizeMode() { 1800 DragLayer dragLayer = (DragLayer) mLauncher.findViewById(R.id.drag_layer); 1801 dragLayer.clearAllResizeFrames(); 1802 } 1803 1804 void unshrink(boolean animated) { 1805 unshrink(animated, false); 1806 } 1807 1808 void unshrink(boolean animated, boolean springLoaded) { 1809 mWaitingToShrink = false; 1810 if (mIsSmall) { 1811 float finalScaleFactor = 1.0f; 1812 float finalBackgroundAlpha = 0.0f; 1813 if (springLoaded) { 1814 finalScaleFactor = SPRING_LOADED_DRAG_SHRINK_FACTOR; 1815 finalBackgroundAlpha = 1.0f; 1816 } else { 1817 mIsSmall = false; 1818 } 1819 if (mAnimator != null) { 1820 mAnimator.cancel(); 1821 } 1822 1823 mAnimator = new AnimatorSet(); 1824 final int screenCount = getChildCount(); 1825 1826 final int duration = getResources().getInteger(R.integer.config_workspaceUnshrinkTime); 1827 1828 final float[] oldTranslationXs = new float[getChildCount()]; 1829 final float[] oldTranslationYs = new float[getChildCount()]; 1830 final float[] oldScaleXs = new float[getChildCount()]; 1831 final float[] oldScaleYs = new float[getChildCount()]; 1832 final float[] oldBackgroundAlphas = new float[getChildCount()]; 1833 final float[] oldBackgroundAlphaMultipliers = new float[getChildCount()]; 1834 final float[] oldAlphas = new float[getChildCount()]; 1835 final float[] oldRotationYs = new float[getChildCount()]; 1836 final float[] newTranslationXs = new float[getChildCount()]; 1837 final float[] newTranslationYs = new float[getChildCount()]; 1838 final float[] newScaleXs = new float[getChildCount()]; 1839 final float[] newScaleYs = new float[getChildCount()]; 1840 final float[] newBackgroundAlphas = new float[getChildCount()]; 1841 final float[] newBackgroundAlphaMultipliers = new float[getChildCount()]; 1842 final float[] newAlphas = new float[getChildCount()]; 1843 final float[] newRotationYs = new float[getChildCount()]; 1844 1845 for (int i = 0; i < screenCount; i++) { 1846 final CellLayout cl = (CellLayout)getChildAt(i); 1847 float finalAlphaValue = (i == mCurrentPage) ? 1.0f : 0.0f; 1848 float finalAlphaMultiplierValue = 1849 ((i == mCurrentPage) && (mShrinkState != ShrinkState.SPRING_LOADED)) ? 1850 0.0f : 1.0f; 1851 float rotation = 0.0f; 1852 1853 if (i < mCurrentPage) { 1854 rotation = WORKSPACE_ROTATION; 1855 } else if (i > mCurrentPage) { 1856 rotation = -WORKSPACE_ROTATION; 1857 } 1858 1859 float translation = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1860 1861 oldAlphas[i] = cl.getAlpha(); 1862 newAlphas[i] = finalAlphaValue; 1863 if (animated) { 1864 oldTranslationXs[i] = cl.getTranslationX(); 1865 oldTranslationYs[i] = cl.getTranslationY(); 1866 oldScaleXs[i] = cl.getScaleX(); 1867 oldScaleYs[i] = cl.getScaleY(); 1868 oldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1869 oldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1870 oldRotationYs[i] = cl.getRotationY(); 1871 1872 newTranslationXs[i] = translation; 1873 newTranslationYs[i] = 0f; 1874 newScaleXs[i] = finalScaleFactor; 1875 newScaleYs[i] = finalScaleFactor; 1876 newBackgroundAlphas[i] = finalBackgroundAlpha; 1877 newBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1878 newRotationYs[i] = rotation; 1879 } else { 1880 cl.setTranslationX(translation); 1881 cl.setTranslationY(0.0f); 1882 cl.setScaleX(finalScaleFactor); 1883 cl.setScaleY(finalScaleFactor); 1884 cl.setBackgroundAlpha(0.0f); 1885 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1886 cl.setAlpha(finalAlphaValue); 1887 cl.setRotationY(rotation); 1888 mUnshrinkAnimationListener.onAnimationEnd(null); 1889 } 1890 } 1891 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 1892 boolean isLandscape = display.getWidth() > display.getHeight(); 1893 switch (mShrinkState) { 1894 // animating out 1895 case TOP: 1896 // customize 1897 if (animated) { 1898 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.65f : 0.62f); 1899 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.65f : 0.62f); 1900 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1901 } 1902 break; 1903 case MIDDLE: 1904 case SPRING_LOADED: 1905 if (animated) { 1906 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.49f : 0.46f); 1907 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.49f : 0.46f); 1908 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1909 } 1910 break; 1911 case BOTTOM_HIDDEN: 1912 case BOTTOM_VISIBLE: 1913 // all apps 1914 if (animated) { 1915 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.65f : 0.65f); 1916 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.65f : 0.65f); 1917 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1918 } 1919 break; 1920 } 1921 if (animated) { 1922 ValueAnimator animWithInterpolator = 1923 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1924 animWithInterpolator.setInterpolator(mZoomInInterpolator); 1925 1926 final float oldHorizontalWallpaperOffset = getHorizontalWallpaperOffset(); 1927 final float oldVerticalWallpaperOffset = getVerticalWallpaperOffset(); 1928 final float newHorizontalWallpaperOffset = wallpaperOffsetForCurrentScroll(); 1929 final float newVerticalWallpaperOffset = 0.5f; 1930 animWithInterpolator.addUpdateListener(new LauncherAnimatorUpdateListener() { 1931 public void onAnimationUpdate(float a, float b) { 1932 if (b == 0f) { 1933 // an optimization, but not required 1934 return; 1935 } 1936 fastInvalidate(); 1937 setHorizontalWallpaperOffset( 1938 a * oldHorizontalWallpaperOffset + b * newHorizontalWallpaperOffset); 1939 setVerticalWallpaperOffset( 1940 a * oldVerticalWallpaperOffset + b * newVerticalWallpaperOffset); 1941 for (int i = 0; i < screenCount; i++) { 1942 final CellLayout cl = (CellLayout) getChildAt(i); 1943 cl.fastInvalidate(); 1944 cl.setFastTranslationX( 1945 a * oldTranslationXs[i] + b * newTranslationXs[i]); 1946 cl.setFastTranslationY( 1947 a * oldTranslationYs[i] + b * newTranslationYs[i]); 1948 cl.setFastScaleX(a * oldScaleXs[i] + b * newScaleXs[i]); 1949 cl.setFastScaleY(a * oldScaleYs[i] + b * newScaleYs[i]); 1950 cl.setFastBackgroundAlpha( 1951 a * oldBackgroundAlphas[i] + b * newBackgroundAlphas[i]); 1952 cl.setBackgroundAlphaMultiplier(a * oldBackgroundAlphaMultipliers[i] + 1953 b * newBackgroundAlphaMultipliers[i]); 1954 cl.setFastAlpha(a * oldAlphas[i] + b * newAlphas[i]); 1955 } 1956 } 1957 }); 1958 1959 ValueAnimator rotationAnim = 1960 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1961 rotationAnim.setInterpolator(new DecelerateInterpolator(2.0f)); 1962 rotationAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1963 public void onAnimationUpdate(float a, float b) { 1964 // don't invalidate workspace because we did it above 1965 if (b == 0f) { 1966 // an optimization, but not required 1967 return; 1968 } 1969 for (int i = 0; i < screenCount; i++) { 1970 final CellLayout cl = (CellLayout) getChildAt(i); 1971 cl.setFastRotationY(a * oldRotationYs[i] + b * newRotationYs[i]); 1972 } 1973 } 1974 }); 1975 1976 mAnimator.playTogether(animWithInterpolator, rotationAnim); 1977 // If we call this when we're not animated, onAnimationEnd is never called on 1978 // the listener; make sure we only use the listener when we're actually animating 1979 mAnimator.addListener(mUnshrinkAnimationListener); 1980 mAnimator.start(); 1981 } else { 1982 setHorizontalWallpaperOffset(wallpaperOffsetForCurrentScroll()); 1983 setVerticalWallpaperOffset(0.5f); 1984 updateWallpaperOffsetImmediately(); 1985 } 1986 } 1987 1988 if (!springLoaded) { 1989 hideBackgroundGradient(); 1990 } 1991 } 1992 1993 /** 1994 * Draw the View v into the given Canvas. 1995 * 1996 * @param v the view to draw 1997 * @param destCanvas the canvas to draw on 1998 * @param padding the horizontal and vertical padding to use when drawing 1999 */ 2000 private void drawDragView(View v, Canvas destCanvas, int padding) { 2001 final Rect clipRect = mTempRect; 2002 v.getDrawingRect(clipRect); 2003 2004 // For a TextView, adjust the clip rect so that we don't include the text label 2005 if (v instanceof BubbleTextView) { 2006 final BubbleTextView tv = (BubbleTextView) v; 2007 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 2008 tv.getLayout().getLineTop(0); 2009 } else if (v instanceof TextView) { 2010 final TextView tv = (TextView) v; 2011 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 2012 tv.getLayout().getLineTop(0); 2013 } 2014 2015 // Draw the View into the bitmap. 2016 // The translate of scrollX and scrollY is necessary when drawing TextViews, because 2017 // they set scrollX and scrollY to large values to achieve centered text 2018 2019 destCanvas.save(); 2020 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 2021 destCanvas.clipRect(clipRect, Op.REPLACE); 2022 v.draw(destCanvas); 2023 destCanvas.restore(); 2024 } 2025 2026 /** 2027 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2028 * Responsibility for the bitmap is transferred to the caller. 2029 */ 2030 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 2031 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 2032 final Bitmap b = Bitmap.createBitmap( 2033 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 2034 2035 canvas.setBitmap(b); 2036 drawDragView(v, canvas, padding); 2037 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2038 return b; 2039 } 2040 2041 /** 2042 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2043 * Responsibility for the bitmap is transferred to the caller. 2044 */ 2045 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h) { 2046 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 2047 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 2048 canvas.setBitmap(b); 2049 2050 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 2051 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 2052 (h - padding) / (float) orig.getHeight()); 2053 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 2054 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 2055 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 2056 2057 // center the image 2058 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 2059 2060 Paint p = new Paint(); 2061 p.setFilterBitmap(true); 2062 canvas.drawBitmap(orig, src, dst, p); 2063 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2064 2065 return b; 2066 } 2067 2068 /** 2069 * Creates a drag outline to represent a drop (that we don't have the actual information for 2070 * yet). May be changed in the future to alter the drop outline slightly depending on the 2071 * clip description mime data. 2072 */ 2073 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 2074 Resources r = getResources(); 2075 final int outlineColor = r.getColor(R.color.drag_outline_color); 2076 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 2077 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 2078 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 2079 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 2080 final Bitmap b = Bitmap.createBitmap( 2081 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 2082 2083 canvas.setBitmap(b); 2084 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 2085 rectRadius, rectRadius, mExternalDragOutlinePaint); 2086 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2087 return b; 2088 } 2089 2090 /** 2091 * Returns a new bitmap to show when the given View is being dragged around. 2092 * Responsibility for the bitmap is transferred to the caller. 2093 */ 2094 private Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 2095 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 2096 final Bitmap b = Bitmap.createBitmap( 2097 mDragOutline.getWidth(), mDragOutline.getHeight(), Bitmap.Config.ARGB_8888); 2098 2099 canvas.setBitmap(b); 2100 canvas.drawBitmap(mDragOutline, 0, 0, null); 2101 drawDragView(v, canvas, padding); 2102 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 2103 2104 return b; 2105 } 2106 2107 void startDrag(CellLayout.CellInfo cellInfo) { 2108 View child = cellInfo.cell; 2109 2110 // Make sure the drag was started by a long press as opposed to a long click. 2111 if (!child.isInTouchMode()) { 2112 return; 2113 } 2114 2115 mDragInfo = cellInfo; 2116 2117 CellLayout current = (CellLayout) getChildAt(cellInfo.screen); 2118 current.onDragChild(child); 2119 2120 child.clearFocus(); 2121 child.setPressed(false); 2122 2123 final Canvas canvas = new Canvas(); 2124 2125 // We need to add extra padding to the bitmap to make room for the glow effect 2126 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2127 2128 // The outline is used to visualize where the item will land if dropped 2129 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 2130 2131 // The drag bitmap follows the touch point around on the screen 2132 final Bitmap b = createDragBitmap(child, canvas, bitmapPadding); 2133 2134 final int bmpWidth = b.getWidth(); 2135 final int bmpHeight = b.getHeight(); 2136 2137 child.getLocationOnScreen(mTempXY); 2138 final int screenX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 2139 final int screenY = (int) mTempXY[1] + (child.getHeight() - bmpHeight) / 2; 2140 2141 Rect dragRect = null; 2142 if (child instanceof BubbleTextView) { 2143 int iconSize = getResources().getDimensionPixelSize(R.dimen.app_icon_size); 2144 int top = child.getPaddingTop(); 2145 int left = (bmpWidth - iconSize) / 2; 2146 int right = left + iconSize; 2147 int bottom = top + iconSize; 2148 dragRect = new Rect(left, top, right, bottom); 2149 } 2150 2151 mDragController.startDrag(b, screenX, screenY, this, child.getTag(), 2152 DragController.DRAG_ACTION_MOVE, dragRect); 2153 b.recycle(); 2154 } 2155 2156 void addApplicationShortcut(ShortcutInfo info, int screen, int cellX, int cellY, 2157 boolean insertAtFirst, int intersectX, int intersectY) { 2158 final CellLayout cellLayout = (CellLayout) getChildAt(screen); 2159 View view = mLauncher.createShortcut(R.layout.application, cellLayout, (ShortcutInfo) info); 2160 2161 final int[] cellXY = new int[2]; 2162 cellLayout.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 2163 addInScreen(view, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 2164 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 2165 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2166 cellXY[0], cellXY[1]); 2167 } 2168 2169 private void setPositionForDropAnimation( 2170 View dragView, int dragViewX, int dragViewY, View parent, View child) { 2171 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 2172 2173 // Based on the position of the drag view, find the top left of the original view 2174 int viewX = dragViewX + (dragView.getWidth() - child.getMeasuredWidth()) / 2; 2175 int viewY = dragViewY + (dragView.getHeight() - child.getMeasuredHeight()) / 2; 2176 2177 // Set its old pos (in the new parent's coordinates); it will be animated 2178 // in animateViewIntoPosition after the next layout pass 2179 lp.oldX = viewX - (parent.getLeft() - mScrollX); 2180 lp.oldY = viewY - (parent.getTop() - mScrollY); 2181 } 2182 2183 /* 2184 * We should be careful that this method cannot result in any synchronous requestLayout() 2185 * calls, as it is called from onLayout(). 2186 */ 2187 public void animateViewIntoPosition(final View view) { 2188 final CellLayout parent = (CellLayout) view.getParent().getParent(); 2189 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2190 2191 // Convert the animation params to be relative to the Workspace, not the CellLayout 2192 final int fromX = lp.oldX + parent.getLeft(); 2193 final int fromY = lp.oldY + parent.getTop(); 2194 2195 final int dx = lp.x - lp.oldX; 2196 final int dy = lp.y - lp.oldY; 2197 2198 // Calculate the duration of the animation based on the object's distance 2199 final float dist = (float) Math.sqrt(dx*dx + dy*dy); 2200 final Resources res = getResources(); 2201 final float maxDist = (float) res.getInteger(R.integer.config_dropAnimMaxDist); 2202 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration); 2203 if (dist < maxDist) { 2204 duration *= mQuintEaseOutInterpolator.getInterpolation(dist / maxDist); 2205 } 2206 2207 if (mDropAnim != null) { 2208 mDropAnim.end(); 2209 } 2210 mDropAnim = new ValueAnimator(); 2211 mDropAnim.setInterpolator(mQuintEaseOutInterpolator); 2212 2213 // The view is invisible during the animation; we render it manually. 2214 mDropAnim.addListener(new AnimatorListenerAdapter() { 2215 public void onAnimationStart(Animator animation) { 2216 // Set this here so that we don't render it until the animation begins 2217 mDropView = view; 2218 } 2219 2220 public void onAnimationEnd(Animator animation) { 2221 if (mDropView != null) { 2222 mDropView.setVisibility(View.VISIBLE); 2223 mDropView = null; 2224 } 2225 } 2226 }); 2227 2228 mDropAnim.setDuration(duration); 2229 mDropAnim.setFloatValues(0.0f, 1.0f); 2230 mDropAnim.removeAllUpdateListeners(); 2231 mDropAnim.addUpdateListener(new AnimatorUpdateListener() { 2232 public void onAnimationUpdate(ValueAnimator animation) { 2233 final float percent = (Float) animation.getAnimatedValue(); 2234 // Invalidate the old position 2235 invalidate(mDropViewPos[0], mDropViewPos[1], 2236 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 2237 2238 mDropViewPos[0] = fromX + (int) (percent * dx + 0.5f); 2239 mDropViewPos[1] = fromY + (int) (percent * dy + 0.5f); 2240 invalidate(mDropViewPos[0], mDropViewPos[1], 2241 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 2242 } 2243 }); 2244 2245 mDropAnim.start(); 2246 } 2247 2248 /** 2249 * {@inheritDoc} 2250 */ 2251 public boolean acceptDrop(DragSource source, int x, int y, 2252 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 2253 2254 // If it's an external drop (e.g. from All Apps), check if it should be accepted 2255 if (source != this) { 2256 // Don't accept the drop if we're not over a screen at time of drop 2257 if (mDragTargetLayout == null || !mDragTargetLayout.getAcceptsDrops()) { 2258 return false; 2259 } 2260 2261 final CellLayout.CellInfo dragCellInfo = mDragInfo; 2262 final int spanX = dragCellInfo == null ? 1 : dragCellInfo.spanX; 2263 final int spanY = dragCellInfo == null ? 1 : dragCellInfo.spanY; 2264 2265 final View ignoreView = dragCellInfo == null ? null : dragCellInfo.cell; 2266 2267 // Don't accept the drop if there's no room for the item 2268 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 2269 mLauncher.showOutOfSpaceMessage(); 2270 return false; 2271 } 2272 } 2273 return true; 2274 } 2275 2276 boolean createUserFolderIfNecessary(View newView, CellLayout target, int originX, 2277 int originY, boolean external) { 2278 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2279 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2280 2281 // First we find the cell nearest to point at which the item is dropped, without 2282 // any consideration to whether there is an item there. 2283 mTargetCell = findNearestArea(originX, originY, 2284 spanX, spanY, target, 2285 mTargetCell); 2286 2287 View v = target.getChildAt(mTargetCell[0], mTargetCell[1]); 2288 boolean hasntMoved = mDragInfo != null && (mDragInfo.cellX == mTargetCell[0] && 2289 mDragInfo.cellY == mTargetCell[1]); 2290 2291 if (v == null || hasntMoved) return false; 2292 2293 final int screen = (mTargetCell == null) ? 2294 mDragInfo.screen : indexOfChild(target); 2295 2296 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2297 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2298 2299 if (aboveShortcut && willBecomeShortcut) { 2300 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2301 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2302 // if the drag started here, we need to remove it from the workspace 2303 if (!external) { 2304 int fromScreen = mDragInfo.screen; 2305 CellLayout sourceLayout = (CellLayout) getChildAt(fromScreen); 2306 sourceLayout.removeView(newView); 2307 } 2308 2309 target.removeView(v); 2310 FolderIcon fi = mLauncher.addFolder(screen, mTargetCell[0], mTargetCell[1]); 2311 fi.addItem(destInfo); 2312 fi.addItem(sourceInfo); 2313 return true; 2314 } 2315 return false; 2316 } 2317 2318 public void onDrop(DragSource source, int x, int y, int xOffset, int yOffset, 2319 DragView dragView, Object dragInfo) { 2320 2321 mDragViewVisualCenter = getDragViewVisualCenter(x, y, xOffset, yOffset, dragView, 2322 mDragViewVisualCenter); 2323 2324 // We want the point to be mapped to the dragTarget. 2325 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2326 2327 // When you are in customization mode and drag to a particular screen, make that the 2328 // new current/default screen, so any subsequent taps add items to that screen 2329 if (!mLauncher.isAllAppsVisible()) { 2330 int dragTargetIndex = indexOfChild(mDragTargetLayout); 2331 if (mCurrentPage != dragTargetIndex && (mIsSmall || mIsInUnshrinkAnimation)) { 2332 scrollToNewPageWithoutMovingPages(dragTargetIndex); 2333 } 2334 } 2335 2336 if (source != this) { 2337 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2338 (int) mDragViewVisualCenter[1] }; 2339 if ((mIsSmall || mIsInUnshrinkAnimation) && !mLauncher.isAllAppsVisible()) { 2340 // When the workspace is shrunk and the drop comes from customize, don't actually 2341 // add the item to the screen -- customize will do this itself 2342 ((ItemInfo) dragInfo).dropPos = touchXY; 2343 return; 2344 } 2345 onDropExternal(touchXY, dragInfo, mDragTargetLayout, false, dragView); 2346 } else if (mDragInfo != null) { 2347 final View cell = mDragInfo.cell; 2348 CellLayout dropTargetLayout = mDragTargetLayout; 2349 2350 // Handle the case where the user drops when in the scroll area. 2351 // This is treated as a drop on the adjacent page. 2352 if (dropTargetLayout == null && mInScrollArea) { 2353 if (mPendingScrollDirection == DragController.SCROLL_LEFT) { 2354 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage - 1); 2355 } else if (mPendingScrollDirection == DragController.SCROLL_RIGHT) { 2356 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage + 1); 2357 } 2358 } 2359 2360 if (dropTargetLayout != null) { 2361 // Move internally 2362 final int screen = (mTargetCell == null) ? 2363 mDragInfo.screen : indexOfChild(dropTargetLayout); 2364 2365 // If the item being dropped is a shortcut and the nearest drop cell also contains 2366 // a shortcut, then create a folder with the two shortcuts. 2367 if (createUserFolderIfNecessary(cell, dropTargetLayout, 2368 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], false)) { 2369 return; 2370 } 2371 2372 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2373 // we need to find the nearest cell location that is vacant 2374 mTargetCell = findNearestVacantArea((int) mDragViewVisualCenter[0], 2375 (int) mDragViewVisualCenter[1], mDragInfo.spanX, mDragInfo.spanY, cell, 2376 dropTargetLayout, mTargetCell); 2377 2378 if (screen != mCurrentPage) { 2379 snapToPage(screen); 2380 } 2381 2382 if (mTargetCell != null) { 2383 if (screen != mDragInfo.screen) { 2384 // Reparent the view 2385 ((CellLayout) getChildAt(mDragInfo.screen)).removeView(cell); 2386 addInScreen(cell, screen, mTargetCell[0], mTargetCell[1], 2387 mDragInfo.spanX, mDragInfo.spanY); 2388 } 2389 2390 // update the item's position after drop 2391 final ItemInfo info = (ItemInfo) cell.getTag(); 2392 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2393 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 2394 lp.cellX = mTargetCell[0]; 2395 lp.cellY = mTargetCell[1]; 2396 cell.setId(LauncherModel.getCellLayoutChildId(-1, mDragInfo.screen, 2397 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2398 2399 if (cell instanceof LauncherAppWidgetHostView) { 2400 final CellLayout cellLayout = dropTargetLayout; 2401 // We post this call so that the widget has a chance to be placed 2402 // in its final location 2403 2404 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2405 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2406 if (pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2407 final Runnable resizeRunnable = new Runnable() { 2408 public void run() { 2409 DragLayer dragLayer = (DragLayer) 2410 mLauncher.findViewById(R.id.drag_layer); 2411 dragLayer.addResizeFrame(info, hostView, 2412 cellLayout); 2413 } 2414 }; 2415 post(new Runnable() { 2416 public void run() { 2417 if (!isPageMoving()) { 2418 resizeRunnable.run(); 2419 } else { 2420 mDelayedResizeRunnable = resizeRunnable; 2421 } 2422 } 2423 }); 2424 } 2425 } 2426 2427 LauncherModel.moveItemInDatabase(mLauncher, info, 2428 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2429 lp.cellX, lp.cellY); 2430 } 2431 } 2432 2433 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2434 2435 int loc[] = new int[2]; 2436 getViewLocationRelativeToSelf(dragView, loc); 2437 2438 // Prepare it to be animated into its new position 2439 // This must be called after the view has been re-parented 2440 setPositionForDropAnimation(dragView, loc[0], loc[1], parent, cell); 2441 boolean animateDrop = !mWasSpringLoadedOnDragExit; 2442 parent.onDropChild(cell, animateDrop); 2443 } 2444 } 2445 2446 private void getViewLocationRelativeToSelf(View v, int[] location) { 2447 getLocationOnScreen(location); 2448 int x = location[0]; 2449 int y = location[1]; 2450 2451 v.getLocationOnScreen(location); 2452 int vX = location[0]; 2453 int vY = location[1]; 2454 2455 location[0] = vX - x; 2456 location[1] = vY - y; 2457 } 2458 2459 public void onDragEnter(DragSource source, int x, int y, int xOffset, 2460 int yOffset, DragView dragView, Object dragInfo) { 2461 mDragTargetLayout = null; // Reset the drag state 2462 2463 if (!mIsSmall) { 2464 mDragTargetLayout = getCurrentDropLayout(); 2465 mDragTargetLayout.onDragEnter(); 2466 showOutlines(); 2467 } 2468 } 2469 2470 public DropTarget getDropTargetDelegate(DragSource source, int x, int y, 2471 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 2472 2473 if (mIsSmall || mIsInUnshrinkAnimation) { 2474 // If we're shrunken, don't let anyone drag on folders/etc that are on the mini-screens 2475 return null; 2476 } 2477 // We may need to delegate the drag to a child view. If a 1x1 item 2478 // would land in a cell occupied by a DragTarget (e.g. a Folder), 2479 // then drag events should be handled by that child. 2480 2481 ItemInfo item = (ItemInfo) dragInfo; 2482 CellLayout currentLayout = getCurrentDropLayout(); 2483 2484 int dragPointX, dragPointY; 2485 if (item.spanX == 1 && item.spanY == 1) { 2486 // For a 1x1, calculate the drop cell exactly as in onDragOver 2487 dragPointX = x - xOffset; 2488 dragPointY = y - yOffset; 2489 } else { 2490 // Otherwise, use the exact drag coordinates 2491 dragPointX = x; 2492 dragPointY = y; 2493 } 2494 dragPointX += mScrollX - currentLayout.getLeft(); 2495 dragPointY += mScrollY - currentLayout.getTop(); 2496 2497 // If we are dragging over a cell that contains a DropTarget that will 2498 // accept the drop, delegate to that DropTarget. 2499 final int[] cellXY = mTempCell; 2500 currentLayout.estimateDropCell(dragPointX, dragPointY, item.spanX, item.spanY, cellXY); 2501 View child = currentLayout.getChildAt(cellXY[0], cellXY[1]); 2502 if (child instanceof DropTarget) { 2503 DropTarget target = (DropTarget)child; 2504 if (target.acceptDrop(source, x, y, xOffset, yOffset, dragView, dragInfo)) { 2505 return target; 2506 } 2507 } 2508 return null; 2509 } 2510 2511 /** 2512 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 2513 * in the returned structure related to the widgets that match the drop (or a null list if it is 2514 * a shortcut drop). If the drop is not accepted then a null structure is returned. 2515 */ 2516 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 2517 final LauncherModel model = mLauncher.getModel(); 2518 final ClipDescription desc = event.getClipDescription(); 2519 final int mimeTypeCount = desc.getMimeTypeCount(); 2520 for (int i = 0; i < mimeTypeCount; ++i) { 2521 final String mimeType = desc.getMimeType(i); 2522 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 2523 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 2524 } else { 2525 final List<WidgetMimeTypeHandlerData> widgets = 2526 model.resolveWidgetsForMimeType(mContext, mimeType); 2527 if (widgets.size() > 0) { 2528 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 2529 } 2530 } 2531 } 2532 return null; 2533 } 2534 2535 /** 2536 * Global drag and drop handler 2537 */ 2538 @Override 2539 public boolean onDragEvent(DragEvent event) { 2540 final ClipDescription desc = event.getClipDescription(); 2541 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 2542 final int[] pos = new int[2]; 2543 layout.getLocationOnScreen(pos); 2544 // We need to offset the drag coordinates to layout coordinate space 2545 final int x = (int) event.getX() - pos[0]; 2546 final int y = (int) event.getY() - pos[1]; 2547 2548 switch (event.getAction()) { 2549 case DragEvent.ACTION_DRAG_STARTED: { 2550 // Validate this drag 2551 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2552 if (test != null) { 2553 boolean isShortcut = (test.second == null); 2554 if (isShortcut) { 2555 // Check if we have enough space on this screen to add a new shortcut 2556 if (!layout.findCellForSpan(pos, 1, 1)) { 2557 Toast.makeText(mContext, mContext.getString(R.string.out_of_space), 2558 Toast.LENGTH_SHORT).show(); 2559 return false; 2560 } 2561 } 2562 } else { 2563 // Show error message if we couldn't accept any of the items 2564 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 2565 Toast.LENGTH_SHORT).show(); 2566 return false; 2567 } 2568 2569 // Create the drag outline 2570 // We need to add extra padding to the bitmap to make room for the glow effect 2571 final Canvas canvas = new Canvas(); 2572 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2573 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 2574 2575 // Show the current page outlines to indicate that we can accept this drop 2576 showOutlines(); 2577 layout.setIsDragOccuring(true); 2578 layout.onDragEnter(); 2579 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2580 2581 return true; 2582 } 2583 case DragEvent.ACTION_DRAG_LOCATION: 2584 // Visualize the drop location 2585 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2586 return true; 2587 case DragEvent.ACTION_DROP: { 2588 // Try and add any shortcuts 2589 final LauncherModel model = mLauncher.getModel(); 2590 final ClipData data = event.getClipData(); 2591 2592 // We assume that the mime types are ordered in descending importance of 2593 // representation. So we enumerate the list of mime types and alert the 2594 // user if any widgets can handle the drop. Only the most preferred 2595 // representation will be handled. 2596 pos[0] = x; 2597 pos[1] = y; 2598 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2599 if (test != null) { 2600 final int index = test.first; 2601 final List<WidgetMimeTypeHandlerData> widgets = test.second; 2602 final boolean isShortcut = (widgets == null); 2603 final String mimeType = desc.getMimeType(index); 2604 if (isShortcut) { 2605 final Intent intent = data.getItemAt(index).getIntent(); 2606 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 2607 onDropExternal(new int[] { x, y }, info, layout, false); 2608 } else { 2609 if (widgets.size() == 1) { 2610 // If there is only one item, then go ahead and add and configure 2611 // that widget 2612 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 2613 final PendingAddWidgetInfo createInfo = 2614 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 2615 mLauncher.addAppWidgetFromDrop(createInfo, mCurrentPage, pos); 2616 } else { 2617 // Show the widget picker dialog if there is more than one widget 2618 // that can handle this data type 2619 final InstallWidgetReceiver.WidgetListAdapter adapter = 2620 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 2621 data, widgets, layout, mCurrentPage, pos); 2622 final AlertDialog.Builder builder = 2623 new AlertDialog.Builder(mContext); 2624 builder.setAdapter(adapter, adapter); 2625 builder.setCancelable(true); 2626 builder.setTitle(mContext.getString( 2627 R.string.external_drop_widget_pick_title)); 2628 builder.setIcon(R.drawable.ic_no_applications); 2629 builder.show(); 2630 } 2631 } 2632 } 2633 return true; 2634 } 2635 case DragEvent.ACTION_DRAG_ENDED: 2636 // Hide the page outlines after the drop 2637 layout.setIsDragOccuring(false); 2638 layout.onDragExit(); 2639 hideOutlines(); 2640 return true; 2641 } 2642 return super.onDragEvent(event); 2643 } 2644 2645 /* 2646 * 2647 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2648 * coordinate space. The argument xy is modified with the return result. 2649 * 2650 */ 2651 void mapPointFromSelfToChild(View v, float[] xy) { 2652 mapPointFromSelfToChild(v, xy, null); 2653 } 2654 2655 /* 2656 * 2657 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2658 * coordinate space. The argument xy is modified with the return result. 2659 * 2660 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2661 * computing it itself; we use this to avoid redundant matrix inversions in 2662 * findMatchingPageForDragOver 2663 * 2664 */ 2665 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2666 if (cachedInverseMatrix == null) { 2667 v.getMatrix().invert(mTempInverseMatrix); 2668 cachedInverseMatrix = mTempInverseMatrix; 2669 } 2670 xy[0] = xy[0] + mScrollX - v.getLeft(); 2671 xy[1] = xy[1] + mScrollY - v.getTop(); 2672 cachedInverseMatrix.mapPoints(xy); 2673 } 2674 2675 /* 2676 * 2677 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2678 * the parent View's coordinate space. The argument xy is modified with the return result. 2679 * 2680 */ 2681 void mapPointFromChildToSelf(View v, float[] xy) { 2682 v.getMatrix().mapPoints(xy); 2683 xy[0] -= (mScrollX - v.getLeft()); 2684 xy[1] -= (mScrollY - v.getTop()); 2685 } 2686 2687 static private float squaredDistance(float[] point1, float[] point2) { 2688 float distanceX = point1[0] - point2[0]; 2689 float distanceY = point2[1] - point2[1]; 2690 return distanceX * distanceX + distanceY * distanceY; 2691 } 2692 2693 /* 2694 * 2695 * Returns true if the passed CellLayout cl overlaps with dragView 2696 * 2697 */ 2698 boolean overlaps(CellLayout cl, DragView dragView, 2699 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2700 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2701 final float[] draggedItemTopLeft = mTempDragCoordinates; 2702 draggedItemTopLeft[0] = dragViewX; 2703 draggedItemTopLeft[1] = dragViewY; 2704 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2705 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2706 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2707 2708 // Transform the dragged item's top left coordinates 2709 // to the CellLayout's local coordinates 2710 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2711 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2712 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2713 2714 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2715 // Transform the dragged item's bottom right coordinates 2716 // to the CellLayout's local coordinates 2717 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2718 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2719 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2720 2721 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2722 float overlap = (overlapRegionRight - overlapRegionLeft) * 2723 (overlapRegionBottom - overlapRegionTop); 2724 if (overlap > 0) { 2725 return true; 2726 } 2727 } 2728 } 2729 return false; 2730 } 2731 2732 /* 2733 * 2734 * This method returns the CellLayout that is currently being dragged to. In order to drag 2735 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2736 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2737 * 2738 * Return null if no CellLayout is currently being dragged over 2739 * 2740 */ 2741 private CellLayout findMatchingPageForDragOver( 2742 DragView dragView, int originX, int originY, int offsetX, int offsetY) { 2743 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2744 // with the item being dragged and then choose the one that's closest to the touch point 2745 final int screenCount = getChildCount(); 2746 CellLayout bestMatchingScreen = null; 2747 float smallestDistSoFar = Float.MAX_VALUE; 2748 2749 for (int i = 0; i < screenCount; i++) { 2750 CellLayout cl = (CellLayout)getChildAt(i); 2751 2752 final float[] touchXy = mTempTouchCoordinates; 2753 touchXy[0] = originX + offsetX; 2754 touchXy[1] = originY + offsetY; 2755 2756 // Transform the touch coordinates to the CellLayout's local coordinates 2757 // If the touch point is within the bounds of the cell layout, we can return immediately 2758 cl.getMatrix().invert(mTempInverseMatrix); 2759 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2760 2761 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2762 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2763 return cl; 2764 } 2765 2766 if (overlaps(cl, dragView, originX, originY, mTempInverseMatrix)) { 2767 // Get the center of the cell layout in screen coordinates 2768 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2769 cellLayoutCenter[0] = cl.getWidth()/2; 2770 cellLayoutCenter[1] = cl.getHeight()/2; 2771 mapPointFromChildToSelf(cl, cellLayoutCenter); 2772 2773 touchXy[0] = originX + offsetX; 2774 touchXy[1] = originY + offsetY; 2775 2776 // Calculate the distance between the center of the CellLayout 2777 // and the touch point 2778 float dist = squaredDistance(touchXy, cellLayoutCenter); 2779 2780 if (dist < smallestDistSoFar) { 2781 smallestDistSoFar = dist; 2782 bestMatchingScreen = cl; 2783 } 2784 } 2785 } 2786 return bestMatchingScreen; 2787 } 2788 2789 // This is used to compute the visual center of the dragView. This point is then 2790 // used to visualize drop locations and determine where to drop an item. The idea is that 2791 // the visual center represents the user's interpretation of where the item is, and hence 2792 // is the appropriate point to use when determining drop location. 2793 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2794 DragView dragView, float[] recycle) { 2795 float res[]; 2796 if (recycle == null) { 2797 res = new float[2]; 2798 } else { 2799 res = recycle; 2800 } 2801 2802 // First off, the drag view has been shifted in a way that is not represented in the 2803 // x and y values or the x/yOffsets. Here we account for that shift. 2804 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2805 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2806 2807 // These represent the visual top and left of drag view if a dragRect was provided. 2808 // If a dragRect was not provided, then they correspond to the actual view left and 2809 // top, as the dragRect is in that case taken to be the entire dragView. 2810 // R.dimen.dragViewOffsetY. 2811 int left = x - xOffset; 2812 int top = y - yOffset; 2813 2814 // In order to find the visual center, we shift by half the dragRect 2815 res[0] = left + dragView.getDragRegion().width() / 2; 2816 res[1] = top + dragView.getDragRegion().height() / 2; 2817 2818 return res; 2819 } 2820 2821 public void onDragOver(DragSource source, int x, int y, int xOffset, int yOffset, 2822 DragView dragView, Object dragInfo) { 2823 // When touch is inside the scroll area, skip dragOver actions for the current screen 2824 if (!mInScrollArea) { 2825 CellLayout layout; 2826 int left = x - xOffset; 2827 int top = y - yOffset; 2828 2829 mDragViewVisualCenter = getDragViewVisualCenter(x, y, xOffset, yOffset, dragView, 2830 mDragViewVisualCenter); 2831 2832 boolean shrunken = mIsSmall || mIsInUnshrinkAnimation; 2833 if (shrunken) { 2834 mLastDragView = dragView; 2835 mLastDragOriginX = left; 2836 mLastDragOriginY = top; 2837 mLastDragXOffset = xOffset; 2838 mLastDragYOffset = yOffset; 2839 layout = findMatchingPageForDragOver(dragView, left, top, xOffset, yOffset); 2840 2841 if (layout != mDragTargetLayout) { 2842 if (mDragTargetLayout != null) { 2843 mDragTargetLayout.setIsDragOverlapping(false); 2844 mSpringLoadedDragController.onDragExit(); 2845 } 2846 mDragTargetLayout = layout; 2847 // In spring-loaded mode, we still want the user to be able to hover over a 2848 // full screen (which is traditionally set to not accept drops) if they want to 2849 // get to pages beyond the screen that is full. 2850 boolean allowDragOver = (mDragTargetLayout != null) && 2851 (mDragTargetLayout.getAcceptsDrops() || 2852 (mShrinkState == ShrinkState.SPRING_LOADED)); 2853 if (allowDragOver) { 2854 mDragTargetLayout.setIsDragOverlapping(true); 2855 mSpringLoadedDragController.onDragEnter( 2856 mDragTargetLayout, mShrinkState == ShrinkState.SPRING_LOADED); 2857 } 2858 } 2859 } else { 2860 layout = getCurrentDropLayout(); 2861 if (layout != mDragTargetLayout) { 2862 if (mDragTargetLayout != null) { 2863 mDragTargetLayout.onDragExit(); 2864 } 2865 layout.onDragEnter(); 2866 mDragTargetLayout = layout; 2867 } 2868 } 2869 if (!shrunken || mShrinkState == ShrinkState.SPRING_LOADED) { 2870 layout = getCurrentDropLayout(); 2871 2872 final ItemInfo item = (ItemInfo)dragInfo; 2873 if (dragInfo instanceof LauncherAppWidgetInfo) { 2874 LauncherAppWidgetInfo widgetInfo = (LauncherAppWidgetInfo)dragInfo; 2875 2876 if (widgetInfo.spanX == -1) { 2877 // Calculate the grid spans needed to fit this widget 2878 int[] spans = layout.rectToCell( 2879 widgetInfo.minWidth, widgetInfo.minHeight, null); 2880 item.spanX = spans[0]; 2881 item.spanY = spans[1]; 2882 } 2883 } 2884 2885 if (mDragTargetLayout != null) { 2886 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2887 // We want the point to be mapped to the dragTarget. 2888 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2889 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2890 (int) mDragViewVisualCenter[0], 2891 (int) mDragViewVisualCenter[1], 2892 item.spanX, item.spanY); 2893 } 2894 } 2895 } 2896 } 2897 2898 private void doDragExit() { 2899 mWasSpringLoadedOnDragExit = mShrinkState == ShrinkState.SPRING_LOADED; 2900 if (mDragTargetLayout != null) { 2901 mDragTargetLayout.onDragExit(); 2902 } 2903 if (!mIsPageMoving) { 2904 hideOutlines(); 2905 } 2906 if (mShrinkState == ShrinkState.SPRING_LOADED) { 2907 mLauncher.exitSpringLoadedDragMode(); 2908 } 2909 clearAllHovers(); 2910 } 2911 2912 public void onDragExit(DragSource source, int x, int y, int xOffset, 2913 int yOffset, DragView dragView, Object dragInfo) { 2914 doDragExit(); 2915 } 2916 2917 @Override 2918 public void getHitRect(Rect outRect) { 2919 // We want the workspace to have the whole area of the display (it will find the correct 2920 // cell layout to drop to in the existing drag/drop logic. 2921 final Display d = mLauncher.getWindowManager().getDefaultDisplay(); 2922 outRect.set(0, 0, d.getWidth(), d.getHeight()); 2923 } 2924 2925 /** 2926 * Add the item specified by dragInfo to the given layout. 2927 * @return true if successful 2928 */ 2929 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2930 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2931 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2932 return true; 2933 } 2934 mLauncher.showOutOfSpaceMessage(); 2935 return false; 2936 } 2937 2938 private void onDropExternal(int[] touchXY, Object dragInfo, 2939 CellLayout cellLayout, boolean insertAtFirst) { 2940 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 2941 } 2942 2943 /** 2944 * Drop an item that didn't originate on one of the workspace screens. 2945 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2946 * come from another app altogether. 2947 * 2948 * NOTE: This can also be called when we are outside of a drag event, when we want 2949 * to add an item to one of the workspace screens. 2950 */ 2951 private void onDropExternal(int[] touchXY, Object dragInfo, 2952 CellLayout cellLayout, boolean insertAtFirst, DragView dragView) { 2953 int screen = indexOfChild(cellLayout); 2954 if (dragInfo instanceof PendingAddItemInfo) { 2955 PendingAddItemInfo info = (PendingAddItemInfo) dragInfo; 2956 // When dragging and dropping from customization tray, we deal with creating 2957 // widgets/shortcuts/folders in a slightly different way 2958 switch (info.itemType) { 2959 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 2960 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) info, screen, touchXY); 2961 break; 2962 case LauncherSettings.Favorites.ITEM_TYPE_LIVE_FOLDER: 2963 mLauncher.addLiveFolderFromDrop(info.componentName, screen, touchXY); 2964 break; 2965 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2966 mLauncher.processShortcutFromDrop(info.componentName, screen, touchXY); 2967 break; 2968 default: 2969 throw new IllegalStateException("Unknown item type: " + info.itemType); 2970 } 2971 cellLayout.onDragExit(); 2972 } else { 2973 // This is for other drag/drop cases, like dragging from All Apps 2974 ItemInfo info = (ItemInfo) dragInfo; 2975 View view = null; 2976 2977 switch (info.itemType) { 2978 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 2979 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2980 if (info.container == NO_ID && info instanceof ApplicationInfo) { 2981 // Came from all apps -- make a copy 2982 info = new ShortcutInfo((ApplicationInfo) info); 2983 } 2984 view = mLauncher.createShortcut(R.layout.application, cellLayout, 2985 (ShortcutInfo) info); 2986 break; 2987 case LauncherSettings.Favorites.ITEM_TYPE_USER_FOLDER: 2988 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, 2989 cellLayout, (UserFolderInfo) info, mIconCache); 2990 break; 2991 default: 2992 throw new IllegalStateException("Unknown item type: " + info.itemType); 2993 } 2994 2995 // If the item being dropped is a shortcut and the nearest drop cell also contains 2996 // a shortcut, then create a folder with the two shortcuts. 2997 if (touchXY != null && createUserFolderIfNecessary(view, cellLayout, touchXY[0], 2998 touchXY[1], true)) { 2999 return; 3000 } 3001 3002 mTargetCell = new int[2]; 3003 if (touchXY != null) { 3004 // when dragging and dropping, just find the closest free spot 3005 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], 1, 1, null, cellLayout, 3006 mTargetCell); 3007 } else { 3008 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3009 } 3010 addInScreen(view, indexOfChild(cellLayout), mTargetCell[0], 3011 mTargetCell[1], info.spanX, info.spanY, insertAtFirst); 3012 boolean animateDrop = !mWasSpringLoadedOnDragExit; 3013 cellLayout.onDropChild(view, animateDrop); 3014 cellLayout.animateDrop(); 3015 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 3016 cellLayout.getChildrenLayout().measureChild(view); 3017 3018 if (dragView != null) { 3019 // we have the visual center of the drag view, we need to find the actual 3020 // left and top of the dragView. 3021 int loc[] = new int[2]; 3022 getViewLocationRelativeToSelf(dragView, loc); 3023 setPositionForDropAnimation(dragView, loc[0], loc[1], cellLayout, view); 3024 } 3025 3026 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 3027 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 3028 lp.cellX, lp.cellY); 3029 } 3030 } 3031 3032 /** 3033 * Return the current {@link CellLayout}, correctly picking the destination 3034 * screen while a scroll is in progress. 3035 */ 3036 public CellLayout getCurrentDropLayout() { 3037 return (CellLayout) getChildAt(mNextPage == INVALID_PAGE ? mCurrentPage : mNextPage); 3038 } 3039 3040 /** 3041 * Return the current CellInfo describing our current drag; this method exists 3042 * so that Launcher can sync this object with the correct info when the activity is created/ 3043 * destroyed 3044 * 3045 */ 3046 public CellLayout.CellInfo getDragInfo() { 3047 return mDragInfo; 3048 } 3049 3050 /** 3051 * Calculate the nearest cell where the given object would be dropped. 3052 * 3053 * pixelX and pixelY should be in the coordinate system of layout 3054 */ 3055 private int[] findNearestVacantArea(int pixelX, int pixelY, 3056 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 3057 return layout.findNearestVacantArea( 3058 pixelX, pixelY, spanX, spanY, ignoreView, recycle); 3059 } 3060 3061 /** 3062 * Calculate the nearest cell where the given object would be dropped. 3063 * 3064 * pixelX and pixelY should be in the coordinate system of layout 3065 */ 3066 private int[] findNearestArea(int pixelX, int pixelY, 3067 int spanX, int spanY, CellLayout layout, int[] recycle) { 3068 return layout.findNearestArea( 3069 pixelX, pixelY, spanX, spanY, recycle); 3070 } 3071 3072 void setLauncher(Launcher launcher) { 3073 mLauncher = launcher; 3074 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3075 3076 mCustomizationDrawer = mLauncher.findViewById(R.id.customization_drawer); 3077 if (mCustomizationDrawer != null) { 3078 mCustomizationDrawerContent = 3079 mCustomizationDrawer.findViewById(com.android.internal.R.id.tabcontent); 3080 } 3081 } 3082 3083 public void setDragController(DragController dragController) { 3084 mDragController = dragController; 3085 } 3086 3087 /** 3088 * Called at the end of a drag which originated on the workspace. 3089 */ 3090 public void onDropCompleted(View target, Object dragInfo, boolean success) { 3091 if (success) { 3092 if (target != this && mDragInfo != null) { 3093 final CellLayout cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3094 cellLayout.removeView(mDragInfo.cell); 3095 if (mDragInfo.cell instanceof DropTarget) { 3096 mDragController.removeDropTarget((DropTarget)mDragInfo.cell); 3097 } 3098 // final Object tag = mDragInfo.cell.getTag(); 3099 } 3100 } else if (mDragInfo != null) { 3101 // NOTE: When 'success' is true, onDragExit is called by the DragController before 3102 // calling onDropCompleted(). We call it ourselves here, but maybe this should be 3103 // moved into DragController.cancelDrag(). 3104 doDragExit(); 3105 ((CellLayout) getChildAt(mDragInfo.screen)).onDropChild(mDragInfo.cell, false); 3106 } 3107 mLauncher.unlockScreenOrientation(); 3108 mDragOutline = null; 3109 mDragInfo = null; 3110 } 3111 3112 @Override 3113 public void onDragViewVisible() { 3114 ((View) mDragInfo.cell).setVisibility(View.GONE); 3115 } 3116 3117 public boolean isDropEnabled() { 3118 return true; 3119 } 3120 3121 @Override 3122 protected void onRestoreInstanceState(Parcelable state) { 3123 super.onRestoreInstanceState(state); 3124 Launcher.setScreen(mCurrentPage); 3125 } 3126 3127 @Override 3128 public void scrollLeft() { 3129 if (!mIsSmall && !mIsInUnshrinkAnimation) { 3130 super.scrollLeft(); 3131 } 3132 } 3133 3134 @Override 3135 public void scrollRight() { 3136 if (!mIsSmall && !mIsInUnshrinkAnimation) { 3137 super.scrollRight(); 3138 } 3139 } 3140 3141 @Override 3142 public void onEnterScrollArea(int direction) { 3143 if (!mIsSmall && !mIsInUnshrinkAnimation) { 3144 mInScrollArea = true; 3145 mPendingScrollDirection = direction; 3146 3147 final int page = mCurrentPage + (direction == DragController.SCROLL_LEFT ? -1 : 1); 3148 final CellLayout layout = (CellLayout) getChildAt(page); 3149 3150 if (layout != null) { 3151 layout.setIsDragOverlapping(true); 3152 3153 if (mDragTargetLayout != null) { 3154 mDragTargetLayout.onDragExit(); 3155 mDragTargetLayout = null; 3156 } 3157 // In portrait, need to redraw the edge glow when entering the scroll area 3158 if (getHeight() > getWidth()) { 3159 invalidate(); 3160 } 3161 } 3162 } 3163 } 3164 3165 private void clearAllHovers() { 3166 final int childCount = getChildCount(); 3167 for (int i = 0; i < childCount; i++) { 3168 ((CellLayout) getChildAt(i)).setIsDragOverlapping(false); 3169 } 3170 mSpringLoadedDragController.onDragExit(); 3171 3172 // In portrait, workspace is responsible for drawing the edge glow on adjacent pages, 3173 // so we need to redraw the workspace when this may have changed. 3174 if (getHeight() > getWidth()) { 3175 invalidate(); 3176 } 3177 } 3178 3179 @Override 3180 public void onExitScrollArea() { 3181 if (mInScrollArea) { 3182 mInScrollArea = false; 3183 mPendingScrollDirection = DragController.SCROLL_NONE; 3184 clearAllHovers(); 3185 } 3186 } 3187 3188 public Folder getFolderForTag(Object tag) { 3189 final int screenCount = getChildCount(); 3190 for (int screen = 0; screen < screenCount; screen++) { 3191 ViewGroup currentScreen = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 3192 int count = currentScreen.getChildCount(); 3193 for (int i = 0; i < count; i++) { 3194 View child = currentScreen.getChildAt(i); 3195 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 3196 if (lp.cellHSpan == 4 && lp.cellVSpan == 4 && child instanceof Folder) { 3197 Folder f = (Folder) child; 3198 if (f.getInfo() == tag && f.getInfo().opened) { 3199 return f; 3200 } 3201 } 3202 } 3203 } 3204 return null; 3205 } 3206 3207 public View getViewForTag(Object tag) { 3208 int screenCount = getChildCount(); 3209 for (int screen = 0; screen < screenCount; screen++) { 3210 ViewGroup currentScreen = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 3211 int count = currentScreen.getChildCount(); 3212 for (int i = 0; i < count; i++) { 3213 View child = currentScreen.getChildAt(i); 3214 if (child.getTag() == tag) { 3215 return child; 3216 } 3217 } 3218 } 3219 return null; 3220 } 3221 3222 void clearDropTargets() { 3223 final int screenCount = getChildCount(); 3224 3225 for (int i = 0; i < screenCount; i++) { 3226 final CellLayout layoutParent = (CellLayout) getChildAt(i); 3227 final ViewGroup layout = layoutParent.getChildrenLayout(); 3228 int childCount = layout.getChildCount(); 3229 for (int j = 0; j < childCount; j++) { 3230 View v = layout.getChildAt(j); 3231 if (v instanceof DropTarget) { 3232 mDragController.removeDropTarget((DropTarget) v); 3233 } 3234 } 3235 } 3236 } 3237 3238 void removeItems(final ArrayList<ApplicationInfo> apps) { 3239 final int screenCount = getChildCount(); 3240 final PackageManager manager = getContext().getPackageManager(); 3241 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3242 3243 final HashSet<String> packageNames = new HashSet<String>(); 3244 final int appCount = apps.size(); 3245 for (int i = 0; i < appCount; i++) { 3246 packageNames.add(apps.get(i).componentName.getPackageName()); 3247 } 3248 3249 for (int i = 0; i < screenCount; i++) { 3250 final CellLayout layoutParent = (CellLayout) getChildAt(i); 3251 final ViewGroup layout = layoutParent.getChildrenLayout(); 3252 3253 // Avoid ANRs by treating each screen separately 3254 post(new Runnable() { 3255 public void run() { 3256 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3257 childrenToRemove.clear(); 3258 3259 int childCount = layout.getChildCount(); 3260 for (int j = 0; j < childCount; j++) { 3261 final View view = layout.getChildAt(j); 3262 Object tag = view.getTag(); 3263 3264 if (tag instanceof ShortcutInfo) { 3265 final ShortcutInfo info = (ShortcutInfo) tag; 3266 final Intent intent = info.intent; 3267 final ComponentName name = intent.getComponent(); 3268 3269 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3270 for (String packageName: packageNames) { 3271 if (packageName.equals(name.getPackageName())) { 3272 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3273 childrenToRemove.add(view); 3274 } 3275 } 3276 } 3277 } else if (tag instanceof UserFolderInfo) { 3278 final UserFolderInfo info = (UserFolderInfo) tag; 3279 final ArrayList<ShortcutInfo> contents = info.contents; 3280 final ArrayList<ShortcutInfo> toRemove = new ArrayList<ShortcutInfo>(1); 3281 final int contentsCount = contents.size(); 3282 boolean removedFromFolder = false; 3283 3284 for (int k = 0; k < contentsCount; k++) { 3285 final ShortcutInfo appInfo = contents.get(k); 3286 final Intent intent = appInfo.intent; 3287 final ComponentName name = intent.getComponent(); 3288 3289 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3290 for (String packageName: packageNames) { 3291 if (packageName.equals(name.getPackageName())) { 3292 toRemove.add(appInfo); 3293 LauncherModel.deleteItemFromDatabase(mLauncher, appInfo); 3294 removedFromFolder = true; 3295 } 3296 } 3297 } 3298 } 3299 3300 contents.removeAll(toRemove); 3301 if (removedFromFolder) { 3302 final Folder folder = getOpenFolder(); 3303 if (folder != null) 3304 folder.notifyDataSetChanged(); 3305 } 3306 } else if (tag instanceof LiveFolderInfo) { 3307 final LiveFolderInfo info = (LiveFolderInfo) tag; 3308 final Uri uri = info.uri; 3309 final ProviderInfo providerInfo = manager.resolveContentProvider( 3310 uri.getAuthority(), 0); 3311 3312 if (providerInfo != null) { 3313 for (String packageName: packageNames) { 3314 if (packageName.equals(providerInfo.packageName)) { 3315 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3316 childrenToRemove.add(view); 3317 } 3318 } 3319 } 3320 } else if (tag instanceof LauncherAppWidgetInfo) { 3321 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3322 final AppWidgetProviderInfo provider = 3323 widgets.getAppWidgetInfo(info.appWidgetId); 3324 if (provider != null) { 3325 for (String packageName: packageNames) { 3326 if (packageName.equals(provider.provider.getPackageName())) { 3327 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3328 childrenToRemove.add(view); 3329 } 3330 } 3331 } 3332 } 3333 } 3334 3335 childCount = childrenToRemove.size(); 3336 for (int j = 0; j < childCount; j++) { 3337 View child = childrenToRemove.get(j); 3338 // Note: We can not remove the view directly from CellLayoutChildren as this 3339 // does not re-mark the spaces as unoccupied. 3340 layoutParent.removeViewInLayout(child); 3341 if (child instanceof DropTarget) { 3342 mDragController.removeDropTarget((DropTarget)child); 3343 } 3344 } 3345 3346 if (childCount > 0) { 3347 layout.requestLayout(); 3348 layout.invalidate(); 3349 } 3350 } 3351 }); 3352 } 3353 } 3354 3355 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3356 final int screenCount = getChildCount(); 3357 for (int i = 0; i < screenCount; i++) { 3358 final ViewGroup layout = ((CellLayout) getChildAt(i)).getChildrenLayout(); 3359 int childCount = layout.getChildCount(); 3360 for (int j = 0; j < childCount; j++) { 3361 final View view = layout.getChildAt(j); 3362 Object tag = view.getTag(); 3363 if (tag instanceof ShortcutInfo) { 3364 ShortcutInfo info = (ShortcutInfo)tag; 3365 // We need to check for ACTION_MAIN otherwise getComponent() might 3366 // return null for some shortcuts (for instance, for shortcuts to 3367 // web pages.) 3368 final Intent intent = info.intent; 3369 final ComponentName name = intent.getComponent(); 3370 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3371 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3372 final int appCount = apps.size(); 3373 for (int k = 0; k < appCount; k++) { 3374 ApplicationInfo app = apps.get(k); 3375 if (app.componentName.equals(name)) { 3376 info.setIcon(mIconCache.getIcon(info.intent)); 3377 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 3378 new FastBitmapDrawable(info.getIcon(mIconCache)), 3379 null, null); 3380 } 3381 } 3382 } 3383 } 3384 } 3385 } 3386 } 3387 3388 void moveToDefaultScreen(boolean animate) { 3389 if (mIsSmall || mIsInUnshrinkAnimation) { 3390 mLauncher.showWorkspace(animate, (CellLayout)getChildAt(mDefaultPage)); 3391 } else if (animate) { 3392 snapToPage(mDefaultPage); 3393 } else { 3394 setCurrentPage(mDefaultPage); 3395 } 3396 getChildAt(mDefaultPage).requestFocus(); 3397 } 3398 3399 void setIndicators(Drawable previous, Drawable next) { 3400 mPreviousIndicator = previous; 3401 mNextIndicator = next; 3402 previous.setLevel(mCurrentPage); 3403 next.setLevel(mCurrentPage); 3404 } 3405 3406 @Override 3407 public void syncPages() { 3408 } 3409 3410 @Override 3411 public void syncPageItems(int page) { 3412 } 3413 3414} 3415