Workspace.java revision 5cf73001ae38d7ba7e911327764f04b95ed84921
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.launcher2; 18 19import java.util.ArrayList; 20import java.util.HashSet; 21import java.util.List; 22 23import android.animation.Animator; 24import android.animation.AnimatorListenerAdapter; 25import android.animation.AnimatorSet; 26import android.animation.ObjectAnimator; 27import android.animation.TimeInterpolator; 28import android.animation.ValueAnimator; 29import android.animation.Animator.AnimatorListener; 30import android.animation.ValueAnimator.AnimatorUpdateListener; 31import android.app.AlertDialog; 32import android.app.WallpaperManager; 33import android.appwidget.AppWidgetManager; 34import android.appwidget.AppWidgetProviderInfo; 35import android.content.ClipData; 36import android.content.ClipDescription; 37import android.content.ComponentName; 38import android.content.Context; 39import android.content.Intent; 40import android.content.pm.PackageManager; 41import android.content.res.Resources; 42import android.content.res.TypedArray; 43import android.graphics.Bitmap; 44import android.graphics.Camera; 45import android.graphics.Canvas; 46import android.graphics.Matrix; 47import android.graphics.Paint; 48import android.graphics.Rect; 49import android.graphics.RectF; 50import android.graphics.Region.Op; 51import android.graphics.drawable.Drawable; 52import android.os.IBinder; 53import android.os.Parcelable; 54import android.util.AttributeSet; 55import android.util.DisplayMetrics; 56import android.util.Log; 57import android.util.Pair; 58import android.view.Display; 59import android.view.DragEvent; 60import android.view.MotionEvent; 61import android.view.View; 62import android.view.ViewGroup; 63import android.view.animation.DecelerateInterpolator; 64import android.widget.TabHost; 65import android.widget.TabWidget; 66import android.widget.TextView; 67import android.widget.Toast; 68 69import com.android.launcher.R; 70import com.android.launcher2.FolderIcon.FolderRingAnimator; 71import com.android.launcher2.InstallWidgetReceiver.WidgetMimeTypeHandlerData; 72 73/** 74 * The workspace is a wide area with a wallpaper and a finite number of pages. 75 * Each page contains a number of icons, folders or widgets the user can 76 * interact with. A workspace is meant to be used with a fixed width only. 77 */ 78public class Workspace extends SmoothPagedView 79 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 80 View.OnClickListener { 81 @SuppressWarnings({"UnusedDeclaration"}) 82 private static final String TAG = "Launcher.Workspace"; 83 84 // How much the screens shrink when we enter spring loaded drag mode 85 private static final float SPRING_LOADED_DRAG_SHRINK_FACTOR = 0.7f; 86 87 // Y rotation to apply to the workspace screens 88 private static final float WORKSPACE_ROTATION = 12.5f; 89 90 // These are extra scale factors to apply to the mini home screens 91 // so as to achieve the desired transform 92 private static final float EXTRA_SCALE_FACTOR_0 = 0.972f; 93 private static final float EXTRA_SCALE_FACTOR_1 = 1.0f; 94 private static final float EXTRA_SCALE_FACTOR_2 = 1.10f; 95 96 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 97 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 98 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 99 100 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 101 private static final int BACKGROUND_FADE_IN_DURATION = 350; 102 103 // These animators are used to fade the children's outlines 104 private ObjectAnimator mChildrenOutlineFadeInAnimation; 105 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 106 private float mChildrenOutlineAlpha = 0; 107 108 // These properties refer to the background protection gradient used for AllApps and Customize 109 private ValueAnimator mBackgroundFadeInAnimation; 110 private ValueAnimator mBackgroundFadeOutAnimation; 111 private Drawable mBackground; 112 private Drawable mCustomizeTrayBackground; 113 boolean mDrawBackground = true; 114 private boolean mDrawCustomizeTrayBackground; 115 private float mBackgroundAlpha = 0; 116 private float mOverScrollMaxBackgroundAlpha = 0.0f; 117 private int mOverScrollPageIndex = -1; 118 119 private View mCustomizationDrawer; 120 private View mCustomizationDrawerContent; 121 private int[] mCustomizationDrawerPos = new int[2]; 122 private float[] mCustomizationDrawerTransformedPos = new float[2]; 123 124 private final WallpaperManager mWallpaperManager; 125 private IBinder mWindowToken; 126 127 private int mDefaultPage; 128 129 private boolean mIsDragInProcess = false; 130 private boolean mIsDraggingOverIcon = false; 131 132 /** 133 * CellInfo for the cell that is currently being dragged 134 */ 135 private CellLayout.CellInfo mDragInfo; 136 137 /** 138 * Target drop area calculated during last acceptDrop call. 139 */ 140 private int[] mTargetCell = null; 141 142 /** 143 * The CellLayout that is currently being dragged over 144 */ 145 private CellLayout mDragTargetLayout = null; 146 147 private Launcher mLauncher; 148 private IconCache mIconCache; 149 private DragController mDragController; 150 151 // These are temporary variables to prevent having to allocate a new object just to 152 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 153 private int[] mTempCell = new int[2]; 154 private int[] mTempEstimate = new int[2]; 155 private float[] mDragViewVisualCenter = new float[2]; 156 private float[] mTempDragCoordinates = new float[2]; 157 private float[] mTempTouchCoordinates = new float[2]; 158 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 159 private float[] mTempDragBottomRightCoordinates = new float[2]; 160 private Matrix mTempInverseMatrix = new Matrix(); 161 private int[] mTempLocation = new int[2]; 162 163 private SpringLoadedDragController mSpringLoadedDragController; 164 165 private static final int DEFAULT_CELL_COUNT_X = 4; 166 private static final int DEFAULT_CELL_COUNT_Y = 4; 167 168 private Drawable mPreviousIndicator; 169 private Drawable mNextIndicator; 170 171 // State variable that indicates whether the pages are small (ie when you're 172 // in all apps or customize mode) 173 private boolean mIsSmall = false; 174 private boolean mIsInUnshrinkAnimation = false; 175 private AnimatorListener mShrinkAnimationListener; 176 private AnimatorListener mUnshrinkAnimationListener; 177 enum ShrinkState { TOP, SPRING_LOADED, MIDDLE, BOTTOM_HIDDEN, BOTTOM_VISIBLE }; 178 private ShrinkState mShrinkState; 179 private boolean mWasSpringLoadedOnDragExit = false; 180 private boolean mWaitingToShrink = false; 181 private ShrinkState mWaitingToShrinkState; 182 private AnimatorSet mAnimator; 183 184 /** Is the user is dragging an item near the edge of a page? */ 185 private boolean mInScrollArea = false; 186 187 /** If mInScrollArea is true, the direction of the scroll. */ 188 private int mPendingScrollDirection = DragController.SCROLL_NONE; 189 190 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 191 private Bitmap mDragOutline = null; 192 private final Rect mTempRect = new Rect(); 193 private final int[] mTempXY = new int[2]; 194 195 private ValueAnimator mDropAnim = null; 196 private TimeInterpolator mQuintEaseOutInterpolator = new DecelerateInterpolator(2.5f); 197 private View mDropView = null; 198 private int[] mDropViewPos = new int[] { -1, -1 }; 199 200 // Paint used to draw external drop outline 201 private final Paint mExternalDragOutlinePaint = new Paint(); 202 203 // Camera and Matrix used to determine the final position of a neighboring CellLayout 204 private final Matrix mMatrix = new Matrix(); 205 private final Camera mCamera = new Camera(); 206 private final float mTempFloat2[] = new float[2]; 207 208 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 209 int mWallpaperWidth; 210 int mWallpaperHeight; 211 WallpaperOffsetInterpolator mWallpaperOffset; 212 boolean mUpdateWallpaperOffsetImmediately = false; 213 boolean mSyncWallpaperOffsetWithScroll = true; 214 private Runnable mDelayedResizeRunnable; 215 216 // info about the last drag 217 private DragView mLastDragView; 218 private int mLastDragOriginX; 219 private int mLastDragOriginY; 220 private int mLastDragXOffset; 221 private int mLastDragYOffset; 222 223 private ArrayList<FolderRingAnimator> mFolderOuterRings = new ArrayList<FolderRingAnimator>(); 224 225 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 226 private static final int FOLDER_CREATION_TIMEOUT = 400; 227 private final Alarm mFolderCreationAlarm = new Alarm(); 228 private FolderRingAnimator mDragFolderRingAnimator = null; 229 private View mLastDragOverView = null; 230 private boolean mCreateUserFolderOnDrop = false; 231 private int mCellWidth = -1; 232 private int mCellHeight = -1; 233 234 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 235 private float mXDown; 236 private float mYDown; 237 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 238 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 239 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 240 241 /** 242 * Used to inflate the Workspace from XML. 243 * 244 * @param context The application's context. 245 * @param attrs The attributes set containing the Workspace's customization values. 246 */ 247 public Workspace(Context context, AttributeSet attrs) { 248 this(context, attrs, 0); 249 } 250 251 /** 252 * Used to inflate the Workspace from XML. 253 * 254 * @param context The application's context. 255 * @param attrs The attributes set containing the Workspace's customization values. 256 * @param defStyle Unused. 257 */ 258 public Workspace(Context context, AttributeSet attrs, int defStyle) { 259 super(context, attrs, defStyle); 260 mContentIsRefreshable = false; 261 262 if (!LauncherApplication.isScreenLarge()) { 263 mFadeInAdjacentScreens = false; 264 } 265 266 mWallpaperManager = WallpaperManager.getInstance(context); 267 268 int cellCountX = DEFAULT_CELL_COUNT_X; 269 int cellCountY = DEFAULT_CELL_COUNT_Y; 270 271 TypedArray a = context.obtainStyledAttributes(attrs, 272 R.styleable.Workspace, defStyle, 0); 273 274 if (LauncherApplication.isScreenLarge()) { 275 final Resources res = context.getResources(); 276 final DisplayMetrics dm = res.getDisplayMetrics(); 277 float widthDp = dm.widthPixels / dm.density; 278 float heightDp = dm.heightPixels / dm.density; 279 280 final float statusBarHeight = res.getDimension(R.dimen.status_bar_height); 281 TypedArray actionBarSizeTypedArray = 282 context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize }); 283 float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); 284 285 if (heightDp > widthDp) { 286 float temp = widthDp; 287 widthDp = heightDp; 288 heightDp = temp; 289 } 290 int cellCountXLand = 1; 291 int cellCountXPort = 1; 292 while (2*mPageSpacing + CellLayout.widthInLandscape(res, cellCountXLand + 1) <= widthDp) { 293 cellCountXLand++; 294 } 295 while (CellLayout.widthInPortrait(res, cellCountXPort + 1) <= heightDp) { 296 cellCountXPort++; 297 } 298 cellCountX = Math.min(cellCountXLand, cellCountXPort); 299 300 int cellCountYLand = 1; 301 int cellCountYPort = 1; 302 while (statusBarHeight + actionBarHeight + 303 CellLayout.heightInLandscape(res, cellCountYLand + 1) <= heightDp) { 304 cellCountYLand++; 305 } 306 while (statusBarHeight + actionBarHeight + 307 CellLayout.heightInPortrait(res, cellCountYPort + 1) <= widthDp) { 308 cellCountYPort++; 309 } 310 cellCountY = Math.min(cellCountYLand, cellCountYPort); 311 } 312 313 // if the value is manually specified, use that instead 314 cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX); 315 cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY); 316 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 317 a.recycle(); 318 319 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 320 setHapticFeedbackEnabled(false); 321 322 initWorkspace(); 323 324 // Disable multitouch across the workspace/all apps/customize tray 325 setMotionEventSplittingEnabled(true); 326 } 327 328 /** 329 * Initializes various states for this workspace. 330 */ 331 protected void initWorkspace() { 332 Context context = getContext(); 333 mCurrentPage = mDefaultPage; 334 Launcher.setScreen(mCurrentPage); 335 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 336 mIconCache = app.getIconCache(); 337 mExternalDragOutlinePaint.setAntiAlias(true); 338 setWillNotDraw(false); 339 340 try { 341 final Resources res = getResources(); 342 mBackground = res.getDrawable(R.drawable.all_apps_bg_gradient); 343 mCustomizeTrayBackground = res.getDrawable(R.drawable.customize_bg_gradient); 344 } catch (Resources.NotFoundException e) { 345 // In this case, we will skip drawing background protection 346 } 347 348 mUnshrinkAnimationListener = new AnimatorListenerAdapter() { 349 @Override 350 public void onAnimationStart(Animator animation) { 351 mIsInUnshrinkAnimation = true; 352 } 353 354 @Override 355 public void onAnimationEnd(Animator animation) { 356 mIsInUnshrinkAnimation = false; 357 mSyncWallpaperOffsetWithScroll = true; 358 if (mShrinkState == ShrinkState.SPRING_LOADED) { 359 View layout = null; 360 if (mLastDragView != null) { 361 layout = findMatchingPageForDragOver(mLastDragView, mLastDragOriginX, 362 mLastDragOriginY, mLastDragXOffset, mLastDragYOffset); 363 } 364 mSpringLoadedDragController.onEnterSpringLoadedMode(layout == null); 365 } else { 366 mDrawCustomizeTrayBackground = false; 367 } 368 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 369 mAnimator = null; 370 enableChildrenLayers(false); 371 } 372 }; 373 mShrinkAnimationListener = new AnimatorListenerAdapter() { 374 @Override 375 public void onAnimationStart(Animator animation) { 376 enableChildrenLayers(true); 377 } 378 @Override 379 public void onAnimationEnd(Animator animation) { 380 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 381 mAnimator = null; 382 } 383 }; 384 mSnapVelocity = 600; 385 mWallpaperOffset = new WallpaperOffsetInterpolator(); 386 } 387 388 @Override 389 protected int getScrollMode() { 390 if (LauncherApplication.isScreenLarge()) { 391 return SmoothPagedView.X_LARGE_MODE; 392 } else { 393 return SmoothPagedView.DEFAULT_MODE; 394 } 395 } 396 397 private void onAddView(View child) { 398 if (!(child instanceof CellLayout)) { 399 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 400 } 401 CellLayout cl = ((CellLayout) child); 402 cl.setOnInterceptTouchListener(this); 403 cl.setOnClickListener(this); 404 cl.setClickable(true); 405 cl.enableHardwareLayers(); 406 } 407 408 @Override 409 public void addView(View child, int index, LayoutParams params) { 410 onAddView(child); 411 super.addView(child, index, params); 412 } 413 414 @Override 415 public void addView(View child) { 416 onAddView(child); 417 super.addView(child); 418 } 419 420 @Override 421 public void addView(View child, int index) { 422 onAddView(child); 423 super.addView(child, index); 424 } 425 426 @Override 427 public void addView(View child, int width, int height) { 428 onAddView(child); 429 super.addView(child, width, height); 430 } 431 432 @Override 433 public void addView(View child, LayoutParams params) { 434 onAddView(child); 435 super.addView(child, params); 436 } 437 438 /** 439 * @return The open folder on the current screen, or null if there is none 440 */ 441 Folder getOpenFolder() { 442 ViewGroup currentPage = ((CellLayout) getChildAt(mCurrentPage)).getChildrenLayout(); 443 int count = currentPage.getChildCount(); 444 for (int i = 0; i < count; i++) { 445 View child = currentPage.getChildAt(i); 446 if (child instanceof Folder) { 447 Folder folder = (Folder) child; 448 if (folder.getInfo().opened) 449 return folder; 450 } 451 } 452 return null; 453 } 454 455 ArrayList<Folder> getOpenFolders() { 456 final int screenCount = getChildCount(); 457 ArrayList<Folder> folders = new ArrayList<Folder>(screenCount); 458 459 for (int screen = 0; screen < screenCount; screen++) { 460 ViewGroup currentPage = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 461 int count = currentPage.getChildCount(); 462 for (int i = 0; i < count; i++) { 463 View child = currentPage.getChildAt(i); 464 if (child instanceof Folder) { 465 Folder folder = (Folder) child; 466 if (folder.getInfo().opened) 467 folders.add(folder); 468 break; 469 } 470 } 471 } 472 return folders; 473 } 474 475 boolean isTouchActive() { 476 return mTouchState != TOUCH_STATE_REST; 477 } 478 479 /** 480 * Adds the specified child in the specified screen. The position and dimension of 481 * the child are defined by x, y, spanX and spanY. 482 * 483 * @param child The child to add in one of the workspace's screens. 484 * @param screen The screen in which to add the child. 485 * @param x The X position of the child in the screen's grid. 486 * @param y The Y position of the child in the screen's grid. 487 * @param spanX The number of cells spanned horizontally by the child. 488 * @param spanY The number of cells spanned vertically by the child. 489 */ 490 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY) { 491 addInScreen(child, screen, x, y, spanX, spanY, false); 492 } 493 494 void addInFullScreen(View child, int screen) { 495 addInScreen(child, screen, 0, 0, -1, -1); 496 } 497 498 /** 499 * Adds the specified child in the specified screen. The position and dimension of 500 * the child are defined by x, y, spanX and spanY. 501 * 502 * @param child The child to add in one of the workspace's screens. 503 * @param screen The screen in which to add the child. 504 * @param x The X position of the child in the screen's grid. 505 * @param y The Y position of the child in the screen's grid. 506 * @param spanX The number of cells spanned horizontally by the child. 507 * @param spanY The number of cells spanned vertically by the child. 508 * @param insert When true, the child is inserted at the beginning of the children list. 509 */ 510 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY, boolean insert) { 511 if (screen < 0 || screen >= getChildCount()) { 512 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 513 + " (was " + screen + "); skipping child"); 514 return; 515 } 516 517 final CellLayout group = (CellLayout) getChildAt(screen); 518 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 519 if (lp == null) { 520 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 521 } else { 522 lp.cellX = x; 523 lp.cellY = y; 524 lp.cellHSpan = spanX; 525 lp.cellVSpan = spanY; 526 } 527 528 if (spanX < 0 && spanY < 0) { 529 lp.isLockedToGrid = false; 530 } 531 532 // Get the canonical child id to uniquely represent this view in this screen 533 int childId = LauncherModel.getCellLayoutChildId(-1, screen, x, y, spanX, spanY); 534 boolean markCellsAsOccupied = !(child instanceof Folder); 535 if (!group.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 536 // TODO: This branch occurs when the workspace is adding views 537 // outside of the defined grid 538 // maybe we should be deleting these items from the LauncherModel? 539 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 540 } 541 542 if (!(child instanceof Folder)) { 543 child.setHapticFeedbackEnabled(false); 544 child.setOnLongClickListener(mLongClickListener); 545 } 546 if (child instanceof DropTarget) { 547 mDragController.addDropTarget((DropTarget) child); 548 } 549 } 550 551 /** 552 * Check if the point (x, y) hits a given page. 553 */ 554 private boolean hitsPage(int index, float x, float y) { 555 final View page = getChildAt(index); 556 if (page != null) { 557 float[] localXY = { x, y }; 558 mapPointFromSelfToChild(page, localXY); 559 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 560 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 561 } 562 return false; 563 } 564 565 @Override 566 protected boolean hitsPreviousPage(float x, float y) { 567 // mNextPage is set to INVALID_PAGE whenever we are stationary. 568 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 569 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 570 return hitsPage(current - 1, x, y); 571 } 572 573 @Override 574 protected boolean hitsNextPage(float x, float y) { 575 // mNextPage is set to INVALID_PAGE whenever we are stationary. 576 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 577 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 578 return hitsPage(current + 1, x, y); 579 } 580 581 /** 582 * Called directly from a CellLayout (not by the framework), after we've been added as a 583 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 584 * that it should intercept touch events, which is not something that is normally supported. 585 */ 586 @Override 587 public boolean onTouch(View v, MotionEvent event) { 588 return (mIsSmall || mIsInUnshrinkAnimation); 589 } 590 591 /** 592 * Handle a click event on a CellLayout. 593 */ 594 @Override 595 public void onClick(View cellLayout) { 596 // Only allow clicks on a CellLayout if it is shrunken and visible. 597 if ((mIsSmall || mIsInUnshrinkAnimation) && mShrinkState != ShrinkState.BOTTOM_HIDDEN) { 598 mLauncher.onWorkspaceClick((CellLayout) cellLayout); 599 } 600 } 601 602 protected void onWindowVisibilityChanged (int visibility) { 603 mLauncher.onWindowVisibilityChanged(visibility); 604 } 605 606 @Override 607 public boolean dispatchUnhandledMove(View focused, int direction) { 608 if (mIsSmall || mIsInUnshrinkAnimation) { 609 // when the home screens are shrunken, shouldn't allow side-scrolling 610 return false; 611 } 612 return super.dispatchUnhandledMove(focused, direction); 613 } 614 615 @Override 616 public boolean onInterceptTouchEvent(MotionEvent ev) { 617 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 618 mXDown = ev.getX(); 619 mYDown = ev.getY(); 620 } 621 622 if (mIsSmall || mIsInUnshrinkAnimation) { 623 if (mLauncher.isAllAppsVisible() && mShrinkState == ShrinkState.BOTTOM_HIDDEN) { 624 // Intercept this event so we can show the workspace in full view 625 // when it is clicked on and it is small 626 PagedView appsPane = null; 627 if (LauncherApplication.isScreenLarge()) { 628 appsPane = (PagedView) mLauncher.findViewById(R.id.all_apps_paged_view); 629 } else { 630 appsPane = (PagedView) mLauncher.findViewById(R.id.apps_customize_pane_content); 631 } 632 633 if (appsPane != null) { 634 appsPane.onInterceptTouchEvent(ev); 635 } 636 return true; 637 } 638 return false; 639 } 640 return super.onInterceptTouchEvent(ev); 641 } 642 643 @Override 644 protected void determineScrollingStart(MotionEvent ev) { 645 if (!mIsSmall && !mIsInUnshrinkAnimation) { 646 float deltaX = Math.abs(ev.getX() - mXDown); 647 float deltaY = Math.abs(ev.getY() - mYDown); 648 649 if (Float.compare(deltaX, 0f) == 0) return; 650 651 float slope = deltaY / deltaX; 652 float theta = (float) Math.atan(slope); 653 654 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 655 cancelCurrentPageLongPress(); 656 } 657 658 if (theta > MAX_SWIPE_ANGLE) { 659 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 660 return; 661 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 662 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 663 // increase the touch slop to make it harder to begin scrolling the workspace. This 664 // results in vertically scrolling widgets to more easily. The higher the angle, the 665 // more we increase touch slop. 666 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 667 float extraRatio = (float) 668 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 669 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 670 } else { 671 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 672 super.determineScrollingStart(ev); 673 } 674 } 675 } 676 677 protected void onPageBeginMoving() { 678 if (mNextPage != INVALID_PAGE) { 679 // we're snapping to a particular screen 680 enableChildrenCache(mCurrentPage, mNextPage); 681 } else { 682 // this is when user is actively dragging a particular screen, they might 683 // swipe it either left or right (but we won't advance by more than one screen) 684 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 685 } 686 showOutlines(); 687 } 688 689 protected void onPageEndMoving() { 690 clearChildrenCache(); 691 // Hide the outlines, as long as we're not dragging 692 if (!mDragController.dragging()) { 693 hideOutlines(); 694 } 695 mOverScrollMaxBackgroundAlpha = 0.0f; 696 mOverScrollPageIndex = -1; 697 698 if (mDelayedResizeRunnable != null) { 699 mDelayedResizeRunnable.run(); 700 mDelayedResizeRunnable = null; 701 } 702 } 703 704 @Override 705 protected void notifyPageSwitchListener() { 706 super.notifyPageSwitchListener(); 707 708 if (mPreviousIndicator != null) { 709 // if we know the next page, we show the indication for it right away; it looks 710 // weird if the indicators are lagging 711 int page = mNextPage; 712 if (page == INVALID_PAGE) { 713 page = mCurrentPage; 714 } 715 mPreviousIndicator.setLevel(page); 716 mNextIndicator.setLevel(page); 717 } 718 Launcher.setScreen(mCurrentPage); 719 }; 720 721 // As a ratio of screen height, the total distance we want the parallax effect to span 722 // vertically 723 private float wallpaperTravelToScreenHeightRatio(int width, int height) { 724 return 1.1f; 725 } 726 727 // As a ratio of screen height, the total distance we want the parallax effect to span 728 // horizontally 729 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 730 float aspectRatio = width / (float) height; 731 732 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 733 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 734 // We will use these two data points to extrapolate how much the wallpaper parallax effect 735 // to span (ie travel) at any aspect ratio: 736 737 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 738 final float ASPECT_RATIO_PORTRAIT = 10/16f; 739 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 740 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 741 742 // To find out the desired width at different aspect ratios, we use the following two 743 // formulas, where the coefficient on x is the aspect ratio (width/height): 744 // (16/10)x + y = 1.5 745 // (10/16)x + y = 1.2 746 // We solve for x and y and end up with a final formula: 747 final float x = 748 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 749 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 750 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 751 return x * aspectRatio + y; 752 } 753 754 // The range of scroll values for Workspace 755 private int getScrollRange() { 756 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 757 } 758 759 protected void setWallpaperDimension() { 760 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 761 final int maxDim = Math.max(display.getWidth(), display.getHeight()); 762 final int minDim = Math.min(display.getWidth(), display.getHeight()); 763 764 // We need to ensure that there is enough extra space in the wallpaper for the intended 765 // parallax effects 766 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 767 mWallpaperHeight = (int)(maxDim * wallpaperTravelToScreenHeightRatio(maxDim, minDim)); 768 new Thread("setWallpaperDimension") { 769 public void run() { 770 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 771 } 772 }.start(); 773 } 774 775 public void setVerticalWallpaperOffset(float offset) { 776 mWallpaperOffset.setFinalY(offset); 777 } 778 public float getVerticalWallpaperOffset() { 779 return mWallpaperOffset.getCurrY(); 780 } 781 public void setHorizontalWallpaperOffset(float offset) { 782 mWallpaperOffset.setFinalX(offset); 783 } 784 public float getHorizontalWallpaperOffset() { 785 return mWallpaperOffset.getCurrX(); 786 } 787 788 private float wallpaperOffsetForCurrentScroll() { 789 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 790 final boolean isStaticWallpaper = (mWallpaperManager.getWallpaperInfo() == null); 791 // The wallpaper travel width is how far, from left to right, the wallpaper will move 792 // at this orientation (for example, in portrait mode we don't move all the way to the 793 // edges of the wallpaper, or otherwise the parallax effect would be too strong) 794 int wallpaperTravelWidth = (int) (display.getWidth() * 795 wallpaperTravelToScreenWidthRatio(display.getWidth(), display.getHeight())); 796 if (!isStaticWallpaper) { 797 wallpaperTravelWidth = mWallpaperWidth; 798 } 799 800 // Set wallpaper offset steps (1 / (number of screens - 1)) 801 // We have 3 vertical offset states (centered, and then top/bottom aligned 802 // for all apps/customize) 803 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f / (3 - 1)); 804 805 int scrollRange = getScrollRange(); 806 float scrollProgressOffset = 0; 807 808 // Account for overscroll: you only see the absolute edge of the wallpaper if 809 // you overscroll as far as you can in landscape mode. Only do this for static wallpapers 810 // because live wallpapers (and probably 3rd party wallpaper providers) rely on the offset 811 // being even intervals from 0 to 1 (eg [0, 0.25, 0.5, 0.75, 1]) 812 if (isStaticWallpaper) { 813 int overscrollOffset = (int) (maxOverScroll() * display.getWidth()); 814 scrollProgressOffset += overscrollOffset / (float) getScrollRange(); 815 scrollRange += 2 * overscrollOffset; 816 } 817 818 float scrollProgress = 819 mScrollX / (float) scrollRange + scrollProgressOffset; 820 float offsetInDips = wallpaperTravelWidth * scrollProgress + 821 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 822 float offset = offsetInDips / (float) mWallpaperWidth; 823 return offset; 824 } 825 private void syncWallpaperOffsetWithScroll() { 826 final boolean enableWallpaperEffects = isHardwareAccelerated(); 827 if (enableWallpaperEffects) { 828 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 829 } 830 } 831 832 public void updateWallpaperOffsetImmediately() { 833 mUpdateWallpaperOffsetImmediately = true; 834 } 835 836 private void updateWallpaperOffsets() { 837 boolean updateNow = false; 838 boolean keepUpdating = true; 839 if (mUpdateWallpaperOffsetImmediately) { 840 updateNow = true; 841 keepUpdating = false; 842 mWallpaperOffset.jumpToFinal(); 843 mUpdateWallpaperOffsetImmediately = false; 844 } else { 845 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 846 } 847 if (updateNow) { 848 if (mWindowToken != null) { 849 mWallpaperManager.setWallpaperOffsets(mWindowToken, 850 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 851 } 852 } 853 if (keepUpdating) { 854 fastInvalidate(); 855 } 856 } 857 858 class WallpaperOffsetInterpolator { 859 float mFinalHorizontalWallpaperOffset = 0.0f; 860 float mFinalVerticalWallpaperOffset = 0.5f; 861 float mHorizontalWallpaperOffset = 0.0f; 862 float mVerticalWallpaperOffset = 0.5f; 863 long mLastWallpaperOffsetUpdateTime; 864 boolean mIsMovingFast; 865 boolean mOverrideHorizontalCatchupConstant; 866 float mHorizontalCatchupConstant = 0.35f; 867 float mVerticalCatchupConstant = 0.35f; 868 869 public WallpaperOffsetInterpolator() { 870 } 871 872 public void setOverrideHorizontalCatchupConstant(boolean override) { 873 mOverrideHorizontalCatchupConstant = override; 874 } 875 876 public void setHorizontalCatchupConstant(float f) { 877 mHorizontalCatchupConstant = f; 878 } 879 880 public void setVerticalCatchupConstant(float f) { 881 mVerticalCatchupConstant = f; 882 } 883 884 public boolean computeScrollOffset() { 885 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 886 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 887 mIsMovingFast = false; 888 return false; 889 } 890 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 891 boolean isLandscape = display.getWidth() > display.getHeight(); 892 893 long currentTime = System.currentTimeMillis(); 894 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 895 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 896 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 897 898 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 899 if (!mIsMovingFast && xdiff > 0.07) { 900 mIsMovingFast = true; 901 } 902 903 float fractionToCatchUpIn1MsHorizontal; 904 if (mOverrideHorizontalCatchupConstant) { 905 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 906 } else if (mIsMovingFast) { 907 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 908 } else { 909 // slow 910 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 911 } 912 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 913 914 fractionToCatchUpIn1MsHorizontal /= 33f; 915 fractionToCatchUpIn1MsVertical /= 33f; 916 917 final float UPDATE_THRESHOLD = 0.00001f; 918 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 919 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 920 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 921 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 922 if (jumpToFinalValue) { 923 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 924 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 925 } else { 926 float percentToCatchUpVertical = 927 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 928 float percentToCatchUpHorizontal = 929 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 930 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 931 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 932 } 933 934 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 935 return true; 936 } 937 938 public float getCurrX() { 939 return mHorizontalWallpaperOffset; 940 } 941 942 public float getFinalX() { 943 return mFinalHorizontalWallpaperOffset; 944 } 945 946 public float getCurrY() { 947 return mVerticalWallpaperOffset; 948 } 949 950 public float getFinalY() { 951 return mFinalVerticalWallpaperOffset; 952 } 953 954 public void setFinalX(float x) { 955 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 956 } 957 958 public void setFinalY(float y) { 959 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 960 } 961 962 public void jumpToFinal() { 963 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 964 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 965 } 966 } 967 968 @Override 969 public void computeScroll() { 970 super.computeScroll(); 971 if (mSyncWallpaperOffsetWithScroll) { 972 syncWallpaperOffsetWithScroll(); 973 } 974 } 975 976 void showOutlines() { 977 if (!mIsSmall && !mIsInUnshrinkAnimation) { 978 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 979 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 980 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 981 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 982 mChildrenOutlineFadeInAnimation.start(); 983 } 984 } 985 986 void hideOutlines() { 987 if (!mIsSmall && !mIsInUnshrinkAnimation) { 988 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 989 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 990 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 991 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 992 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 993 mChildrenOutlineFadeOutAnimation.start(); 994 } 995 } 996 997 public void showOutlinesTemporarily() { 998 if (!mIsPageMoving && !isTouchActive()) { 999 snapToPage(mCurrentPage); 1000 } 1001 } 1002 1003 public void setChildrenOutlineAlpha(float alpha) { 1004 mChildrenOutlineAlpha = alpha; 1005 for (int i = 0; i < getChildCount(); i++) { 1006 CellLayout cl = (CellLayout) getChildAt(i); 1007 cl.setBackgroundAlpha(alpha); 1008 } 1009 } 1010 1011 public float getChildrenOutlineAlpha() { 1012 return mChildrenOutlineAlpha; 1013 } 1014 1015 void disableBackground() { 1016 mDrawBackground = false; 1017 } 1018 void enableBackground() { 1019 mDrawBackground = true; 1020 } 1021 1022 private void showBackgroundGradientForAllApps() { 1023 showBackgroundGradient(); 1024 mDrawCustomizeTrayBackground = false; 1025 } 1026 1027 private void showBackgroundGradientForCustomizeTray() { 1028 showBackgroundGradient(); 1029 mDrawCustomizeTrayBackground = true; 1030 } 1031 1032 private void showBackgroundGradient() { 1033 if (mBackground == null) return; 1034 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 1035 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 1036 mBackgroundFadeInAnimation = ValueAnimator.ofFloat(getBackgroundAlpha(), 1f); 1037 mBackgroundFadeInAnimation.addUpdateListener(new AnimatorUpdateListener() { 1038 public void onAnimationUpdate(ValueAnimator animation) { 1039 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1040 } 1041 }); 1042 mBackgroundFadeInAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1043 mBackgroundFadeInAnimation.setDuration(BACKGROUND_FADE_IN_DURATION); 1044 mBackgroundFadeInAnimation.start(); 1045 } 1046 1047 private void hideBackgroundGradient() { 1048 if (mBackground == null) return; 1049 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 1050 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 1051 mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(getBackgroundAlpha(), 0f); 1052 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1053 public void onAnimationUpdate(ValueAnimator animation) { 1054 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1055 } 1056 }); 1057 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1058 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1059 mBackgroundFadeOutAnimation.start(); 1060 } 1061 1062 public void setBackgroundAlpha(float alpha) { 1063 if (alpha != mBackgroundAlpha) { 1064 mBackgroundAlpha = alpha; 1065 invalidate(); 1066 } 1067 } 1068 1069 public float getBackgroundAlpha() { 1070 return mBackgroundAlpha; 1071 } 1072 1073 /** 1074 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 1075 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 1076 * as being larger. This method computes what offset the rotated view should be translated 1077 * in order to minimize this perceived gap. 1078 * @param degrees Angle of the view 1079 * @param width Width of the view 1080 * @param height Height of the view 1081 * @return Offset to be used in a View.setTranslationX() call 1082 */ 1083 private float getOffsetXForRotation(float degrees, int width, int height) { 1084 mMatrix.reset(); 1085 mCamera.save(); 1086 mCamera.rotateY(Math.abs(degrees)); 1087 mCamera.getMatrix(mMatrix); 1088 mCamera.restore(); 1089 1090 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 1091 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 1092 mTempFloat2[0] = width; 1093 mTempFloat2[1] = height; 1094 mMatrix.mapPoints(mTempFloat2); 1095 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 1096 } 1097 1098 float backgroundAlphaInterpolator(float r) { 1099 float pivotA = 0.1f; 1100 float pivotB = 0.4f; 1101 if (r < pivotA) { 1102 return 0; 1103 } else if (r > pivotB) { 1104 return 1.0f; 1105 } else { 1106 return (r - pivotA)/(pivotB - pivotA); 1107 } 1108 } 1109 1110 float overScrollBackgroundAlphaInterpolator(float r) { 1111 float threshold = 0.08f; 1112 1113 if (r > mOverScrollMaxBackgroundAlpha) { 1114 mOverScrollMaxBackgroundAlpha = r; 1115 } else if (r < mOverScrollMaxBackgroundAlpha) { 1116 r = mOverScrollMaxBackgroundAlpha; 1117 } 1118 1119 return Math.min(r / threshold, 1.0f); 1120 } 1121 1122 @Override 1123 protected void screenScrolled(int screenCenter) { 1124 // If the screen is not xlarge, then don't rotate the CellLayouts 1125 // NOTE: If we don't update the side pages alpha, then we should not hide the side pages. 1126 // see unshrink(). 1127 if (!LauncherApplication.isScreenLarge()) return; 1128 1129 final int halfScreenSize = getMeasuredWidth() / 2; 1130 1131 for (int i = 0; i < getChildCount(); i++) { 1132 CellLayout cl = (CellLayout) getChildAt(i); 1133 if (cl != null) { 1134 int totalDistance = getScaledMeasuredWidth(cl) + mPageSpacing; 1135 int delta = screenCenter - (getChildOffset(i) - 1136 getRelativeChildOffset(i) + halfScreenSize); 1137 1138 float scrollProgress = delta / (totalDistance * 1.0f); 1139 scrollProgress = Math.min(scrollProgress, 1.0f); 1140 scrollProgress = Math.max(scrollProgress, -1.0f); 1141 1142 // If the current page (i) is being overscrolled, we use a different 1143 // set of rules for setting the background alpha multiplier. 1144 if ((mScrollX < 0 && i == 0) || (mScrollX > mMaxScrollX && 1145 i == getChildCount() -1 )) { 1146 cl.setBackgroundAlphaMultiplier( 1147 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 1148 mOverScrollPageIndex = i; 1149 } else if (mOverScrollPageIndex != i) { 1150 cl.setBackgroundAlphaMultiplier( 1151 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1152 } 1153 1154 float rotation = WORKSPACE_ROTATION * scrollProgress; 1155 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1156 cl.setTranslationX(translationX); 1157 1158 cl.setRotationY(rotation); 1159 } 1160 } 1161 } 1162 1163 protected void onAttachedToWindow() { 1164 super.onAttachedToWindow(); 1165 mWindowToken = getWindowToken(); 1166 computeScroll(); 1167 mDragController.setWindowToken(mWindowToken); 1168 } 1169 1170 protected void onDetachedFromWindow() { 1171 mWindowToken = null; 1172 } 1173 1174 @Override 1175 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1176 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1177 mUpdateWallpaperOffsetImmediately = true; 1178 } 1179 super.onLayout(changed, left, top, right, bottom); 1180 1181 // if shrinkToBottom() is called on initialization, it has to be deferred 1182 // until after the first call to onLayout so that it has the correct width 1183 if (mWaitingToShrink) { 1184 // shrink can trigger a synchronous onLayout call, so we 1185 // post this to avoid a stack overflow / tangled onLayout calls 1186 post(new Runnable() { 1187 public void run() { 1188 shrink(mWaitingToShrinkState, false); 1189 mWaitingToShrink = false; 1190 } 1191 }); 1192 } 1193 1194 if (LauncherApplication.isInPlaceRotationEnabled()) { 1195 // When the device is rotated, the scroll position of the current screen 1196 // needs to be refreshed 1197 setCurrentPage(getCurrentPage()); 1198 } 1199 } 1200 1201 public void showFolderAccept(FolderRingAnimator fra) { 1202 mFolderOuterRings.add(fra); 1203 } 1204 1205 public void hideFolderAccept(FolderRingAnimator fra) { 1206 if (mFolderOuterRings.contains(fra)) { 1207 mFolderOuterRings.remove(fra); 1208 } 1209 invalidate(); 1210 } 1211 1212 @Override 1213 protected void onDraw(Canvas canvas) { 1214 updateWallpaperOffsets(); 1215 1216 // Draw the background gradient if necessary 1217 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1218 int alpha = (int) (mBackgroundAlpha * 255); 1219 if (mDrawCustomizeTrayBackground) { 1220 // Find out where to offset the gradient for the customization tray content 1221 mCustomizationDrawer.getLocationOnScreen(mCustomizationDrawerPos); 1222 final Matrix m = mCustomizationDrawer.getMatrix(); 1223 mCustomizationDrawerTransformedPos[0] = 0.0f; 1224 mCustomizationDrawerTransformedPos[1] = mCustomizationDrawerContent.getTop(); 1225 m.mapPoints(mCustomizationDrawerTransformedPos); 1226 1227 // Draw the bg glow behind the gradient 1228 mCustomizeTrayBackground.setAlpha(alpha); 1229 mCustomizeTrayBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1230 getMeasuredHeight()); 1231 mCustomizeTrayBackground.draw(canvas); 1232 1233 // Draw the bg gradient 1234 final int offset = (int) (mCustomizationDrawerPos[1] + 1235 mCustomizationDrawerTransformedPos[1]); 1236 mBackground.setAlpha(alpha); 1237 mBackground.setBounds(mScrollX, offset, mScrollX + getMeasuredWidth(), 1238 offset + getMeasuredHeight()); 1239 mBackground.draw(canvas); 1240 } else { 1241 mBackground.setAlpha(alpha); 1242 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1243 getMeasuredHeight()); 1244 mBackground.draw(canvas); 1245 } 1246 } 1247 1248 // The folder outer / inner ring image(s) 1249 for (int i = 0; i < mFolderOuterRings.size(); i++) { 1250 1251 // Draw outer ring 1252 FolderRingAnimator fra = mFolderOuterRings.get(i); 1253 Drawable d = FolderIcon.sFolderOuterRingDrawable; 1254 int width = (int) (d.getIntrinsicWidth() * fra.getOuterRingScale()); 1255 int height = (int) (d.getIntrinsicHeight() * fra.getOuterRingScale()); 1256 fra.getLocation(mTempLocation); 1257 int x = mTempLocation[0] + mScrollX - width / 2; 1258 int y = mTempLocation[1] + mScrollY - height / 2; 1259 d.setBounds(x, y, x + width, y + height); 1260 d.draw(canvas); 1261 1262 // Draw inner ring 1263 if (fra.mFolderIcon != null) { 1264 int folderWidth = fra.mFolderIcon != null ? fra.mFolderIcon.getMeasuredWidth() : mCellWidth; 1265 int folderHeight = fra.mFolderIcon != null ? fra.mFolderIcon.getMeasuredWidth() : mCellHeight; 1266 d = FolderIcon.sFolderInnerRingDrawable; 1267 width = (int) (folderWidth * fra.getInnerRingScale()); 1268 height = (int) (folderHeight * fra.getInnerRingScale()); 1269 x = mTempLocation[0] + mScrollX - width / 2; 1270 y = mTempLocation[1] + mScrollY - height / 2; 1271 d.setBounds(x, y, x + width, y + height); 1272 d.draw(canvas); 1273 } 1274 } 1275 super.onDraw(canvas); 1276 } 1277 1278 @Override 1279 protected void dispatchDraw(Canvas canvas) { 1280 if (mIsSmall || mIsInUnshrinkAnimation) { 1281 // Draw all the workspaces if we're small 1282 final int pageCount = getChildCount(); 1283 final long drawingTime = getDrawingTime(); 1284 for (int i = 0; i < pageCount; i++) { 1285 final CellLayout page = (CellLayout) getChildAt(i); 1286 if (page.getVisibility() == VISIBLE 1287 && (page.getAlpha() != 0f || page.getBackgroundAlpha() != 0f)) { 1288 drawChild(canvas, page, drawingTime); 1289 } 1290 } 1291 } else { 1292 super.dispatchDraw(canvas); 1293 1294 final int width = getWidth(); 1295 final int height = getHeight(); 1296 1297 // In portrait orientation, draw the glowing edge when dragging to adjacent screens 1298 if (mInScrollArea && (height > width)) { 1299 final int pageHeight = getChildAt(0).getHeight(); 1300 1301 // This determines the height of the glowing edge: 90% of the page height 1302 final int padding = (int) ((height - pageHeight) * 0.5f + pageHeight * 0.1f); 1303 1304 final CellLayout leftPage = (CellLayout) getChildAt(mCurrentPage - 1); 1305 final CellLayout rightPage = (CellLayout) getChildAt(mCurrentPage + 1); 1306 1307 if (leftPage != null && leftPage.getIsDragOverlapping()) { 1308 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left); 1309 d.setBounds(mScrollX, padding, mScrollX + d.getIntrinsicWidth(), height - padding); 1310 d.draw(canvas); 1311 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 1312 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right); 1313 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), padding, mScrollX + width, height - padding); 1314 d.draw(canvas); 1315 } 1316 } 1317 1318 if (mDropView != null) { 1319 // We are animating an item that was just dropped on the home screen. 1320 // Render its View in the current animation position. 1321 canvas.save(Canvas.MATRIX_SAVE_FLAG); 1322 final int xPos = mDropViewPos[0] - mDropView.getScrollX(); 1323 final int yPos = mDropViewPos[1] - mDropView.getScrollY(); 1324 canvas.translate(xPos, yPos); 1325 mDropView.draw(canvas); 1326 canvas.restore(); 1327 } 1328 } 1329 } 1330 1331 @Override 1332 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1333 if (!mLauncher.isAllAppsVisible()) { 1334 final Folder openFolder = getOpenFolder(); 1335 if (openFolder != null) { 1336 return openFolder.requestFocus(direction, previouslyFocusedRect); 1337 } else { 1338 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1339 } 1340 } 1341 return false; 1342 } 1343 1344 @Override 1345 public int getDescendantFocusability() { 1346 if (mIsSmall) { 1347 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1348 } 1349 return super.getDescendantFocusability(); 1350 } 1351 1352 @Override 1353 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1354 if (!mLauncher.isAllAppsVisible()) { 1355 final Folder openFolder = getOpenFolder(); 1356 if (openFolder != null) { 1357 openFolder.addFocusables(views, direction); 1358 } else { 1359 super.addFocusables(views, direction, focusableMode); 1360 } 1361 } 1362 } 1363 1364 void enableChildrenCache(int fromPage, int toPage) { 1365 if (fromPage > toPage) { 1366 final int temp = fromPage; 1367 fromPage = toPage; 1368 toPage = temp; 1369 } 1370 1371 final int screenCount = getChildCount(); 1372 1373 fromPage = Math.max(fromPage, 0); 1374 toPage = Math.min(toPage, screenCount - 1); 1375 1376 for (int i = fromPage; i <= toPage; i++) { 1377 final CellLayout layout = (CellLayout) getChildAt(i); 1378 layout.setChildrenDrawnWithCacheEnabled(true); 1379 layout.setChildrenDrawingCacheEnabled(true); 1380 } 1381 } 1382 1383 void clearChildrenCache() { 1384 final int screenCount = getChildCount(); 1385 for (int i = 0; i < screenCount; i++) { 1386 final CellLayout layout = (CellLayout) getChildAt(i); 1387 layout.setChildrenDrawnWithCacheEnabled(false); 1388 } 1389 } 1390 1391 @Override 1392 public boolean onTouchEvent(MotionEvent ev) { 1393 if (mLauncher.isAllAppsVisible() && mShrinkState == ShrinkState.BOTTOM_HIDDEN) { 1394 PagedView appsPane; 1395 if (LauncherApplication.isScreenLarge()) { 1396 appsPane = (PagedView) mLauncher.findViewById(R.id.all_apps_paged_view); 1397 } else { 1398 appsPane = (PagedView) mLauncher.findViewById(R.id.apps_customize_pane_content); 1399 } 1400 1401 if (appsPane != null) { 1402 if (ev.getAction() == MotionEvent.ACTION_UP && 1403 appsPane.getTouchState() == TOUCH_STATE_REST) { 1404 1405 // Cancel any scrolling that is in progress. 1406 if (!mScroller.isFinished()) { 1407 mScroller.abortAnimation(); 1408 } 1409 setCurrentPage(mCurrentPage); 1410 1411 if (mShrinkState == ShrinkState.BOTTOM_HIDDEN) { 1412 mLauncher.showWorkspace(true); 1413 } 1414 appsPane.onTouchEvent(ev); 1415 return true; 1416 } else { 1417 return appsPane.onTouchEvent(ev); 1418 } 1419 } 1420 } 1421 return super.onTouchEvent(ev); 1422 } 1423 1424 protected void enableChildrenLayers(boolean enable) { 1425 for (int i = 0; i < getPageCount(); i++) { 1426 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(enable); 1427 } 1428 } 1429 @Override 1430 protected void pageBeginMoving() { 1431 enableChildrenLayers(true); 1432 super.pageBeginMoving(); 1433 } 1434 1435 @Override 1436 protected void pageEndMoving() { 1437 if (!mIsSmall && !mIsInUnshrinkAnimation) { 1438 enableChildrenLayers(false); 1439 } 1440 super.pageEndMoving(); 1441 } 1442 1443 @Override 1444 protected void onWallpaperTap(MotionEvent ev) { 1445 final int[] position = mTempCell; 1446 getLocationOnScreen(position); 1447 1448 int pointerIndex = ev.getActionIndex(); 1449 position[0] += (int) ev.getX(pointerIndex); 1450 position[1] += (int) ev.getY(pointerIndex); 1451 1452 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1453 ev.getAction() == MotionEvent.ACTION_UP 1454 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1455 position[0], position[1], 0, null); 1456 } 1457 1458 public boolean isSmall() { 1459 return mIsSmall; 1460 } 1461 1462 private float getYScaleForScreen(int screen) { 1463 int x = Math.abs(screen - 2); 1464 1465 // TODO: This should be generalized for use with arbitrary rotation angles. 1466 switch(x) { 1467 case 0: return EXTRA_SCALE_FACTOR_0; 1468 case 1: return EXTRA_SCALE_FACTOR_1; 1469 case 2: return EXTRA_SCALE_FACTOR_2; 1470 } 1471 return 1.0f; 1472 } 1473 1474 public void shrink(ShrinkState shrinkState) { 1475 shrink(shrinkState, true); 1476 } 1477 1478 private int getCustomizeDrawerHeight() { 1479 TabHost customizationDrawer = mLauncher.getCustomizationDrawer(); 1480 int height = customizationDrawer.getHeight(); 1481 TabWidget tabWidget = (TabWidget) 1482 customizationDrawer.findViewById(com.android.internal.R.id.tabs); 1483 if (tabWidget.getTabCount() > 0) { 1484 TextView tabText = (TextView) tabWidget.getChildTabViewAt(0); 1485 // subtract the empty space above the tab text 1486 height -= ((tabWidget.getHeight() - tabText.getLineHeight())) / 2; 1487 } 1488 return height; 1489 } 1490 1491 // we use this to shrink the workspace for the all apps view and the customize view 1492 public void shrink(ShrinkState shrinkState, boolean animated) { 1493 if (mFirstLayout) { 1494 // (mFirstLayout == "first layout has not happened yet") 1495 // if we get a call to shrink() as part of our initialization (for example, if 1496 // Launcher is started in All Apps mode) then we need to wait for a layout call 1497 // to get our width so we can layout the mini-screen views correctly 1498 mWaitingToShrink = true; 1499 mWaitingToShrinkState = shrinkState; 1500 return; 1501 } 1502 // Stop any scrolling, move to the current page right away 1503 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1504 if (!mIsDragInProcess) { 1505 updateWhichPagesAcceptDrops(shrinkState); 1506 } 1507 1508 CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 1509 if (currentPage == null) { 1510 Log.w(TAG, "currentPage is NULL! mCurrentPage " + mCurrentPage 1511 + " mNextPage " + mNextPage); 1512 return; 1513 } 1514 if (currentPage.getBackgroundAlphaMultiplier() < 1.0f) { 1515 currentPage.setBackgroundAlpha(0.0f); 1516 } 1517 currentPage.setBackgroundAlphaMultiplier(1.0f); 1518 1519 mIsSmall = true; 1520 mShrinkState = shrinkState; 1521 1522 // we intercept and reject all touch events when we're small, so be sure to reset the state 1523 mTouchState = TOUCH_STATE_REST; 1524 mActivePointerId = INVALID_POINTER; 1525 1526 final Resources res = getResources(); 1527 final int screenWidth = getWidth(); 1528 final int screenHeight = getHeight(); 1529 1530 // How much the workspace shrinks when we enter all apps or customization mode 1531 final float shrinkFactor = res.getInteger(R.integer.config_workspaceShrinkPercent) / 100.0f; 1532 1533 // Making the assumption that all pages have the same width as the 0th 1534 final int pageWidth = getChildAt(0).getMeasuredWidth(); 1535 final int pageHeight = getChildAt(0).getMeasuredHeight(); 1536 1537 final int scaledPageWidth = (int) (shrinkFactor * pageWidth); 1538 final int scaledPageHeight = (int) (shrinkFactor * pageHeight); 1539 final float extraScaledSpacing = res.getDimension(R.dimen.smallScreenExtraSpacing); 1540 1541 final int screenCount = getChildCount(); 1542 float totalWidth = screenCount * scaledPageWidth + (screenCount - 1) * extraScaledSpacing; 1543 1544 boolean isPortrait = getMeasuredHeight() > getMeasuredWidth(); 1545 float y = (isPortrait ? 1546 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginPortrait) : 1547 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginLandscape)); 1548 float finalAlpha = 1.0f; 1549 float extraShrinkFactor = 1.0f; 1550 1551 if (shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1552 y = screenHeight - y - scaledPageHeight; 1553 } else if (shrinkState == ShrinkState.BOTTOM_HIDDEN) { 1554 // We shrink and disappear to nothing in the case of all apps 1555 // (which is when we shrink to the bottom) 1556 y = screenHeight - y - scaledPageHeight; 1557 finalAlpha = 0.0f; 1558 } else if (shrinkState == ShrinkState.MIDDLE) { 1559 y = screenHeight / 2 - scaledPageHeight / 2; 1560 finalAlpha = 1.0f; 1561 } else if (shrinkState == ShrinkState.TOP) { 1562 y = (screenHeight - getCustomizeDrawerHeight() - scaledPageHeight) / 2; 1563 } 1564 1565 int duration; 1566 if (shrinkState == ShrinkState.BOTTOM_HIDDEN || shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1567 duration = res.getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1568 } else { 1569 duration = res.getInteger(R.integer.config_customizeWorkspaceShrinkTime); 1570 } 1571 1572 // We animate all the screens to the centered position in workspace 1573 // At the same time, the screens become greyed/dimmed 1574 1575 // newX is initialized to the left-most position of the centered screens 1576 float x = mScroller.getFinalX() + screenWidth / 2 - totalWidth / 2; 1577 1578 // We are going to scale about the center of the view, so we need to adjust the positions 1579 // of the views accordingly 1580 x -= (pageWidth - scaledPageWidth) / 2.0f; 1581 y -= (pageHeight - scaledPageHeight) / 2.0f; 1582 1583 if (mAnimator != null) { 1584 mAnimator.cancel(); 1585 } 1586 1587 mAnimator = new AnimatorSet(); 1588 1589 final int childCount = getChildCount(); 1590 final float[] oldXs = new float[childCount]; 1591 final float[] oldYs = new float[childCount]; 1592 final float[] oldScaleXs = new float[childCount]; 1593 final float[] oldScaleYs = new float[childCount]; 1594 final float[] oldBackgroundAlphas = new float[childCount]; 1595 final float[] oldAlphas = new float[childCount]; 1596 final float[] oldRotationYs = new float[childCount]; 1597 final float[] newXs = new float[childCount]; 1598 final float[] newYs = new float[childCount]; 1599 final float[] newScaleXs = new float[childCount]; 1600 final float[] newScaleYs = new float[childCount]; 1601 final float[] newBackgroundAlphas = new float[childCount]; 1602 final float[] newAlphas = new float[childCount]; 1603 final float[] newRotationYs = new float[childCount]; 1604 1605 for (int i = 0; i < screenCount; i++) { 1606 final CellLayout cl = (CellLayout) getChildAt(i); 1607 1608 float rotation = (-i + 2) * WORKSPACE_ROTATION; 1609 float rotationScaleX = (float) (1.0f / Math.cos(Math.PI * rotation / 180.0f)); 1610 float rotationScaleY = getYScaleForScreen(i); 1611 1612 oldAlphas[i] = cl.getAlpha(); 1613 newAlphas[i] = finalAlpha; 1614 if (animated && (oldAlphas[i] != 0f || newAlphas[i] != 0f)) { 1615 // if the CellLayout will be visible during the animation, force building its 1616 // hardware layer immediately so we don't see a blip later in the animation 1617 cl.buildChildrenLayer(); 1618 } 1619 if (animated) { 1620 oldXs[i] = cl.getX(); 1621 oldYs[i] = cl.getY(); 1622 oldScaleXs[i] = cl.getScaleX(); 1623 oldScaleYs[i] = cl.getScaleY(); 1624 oldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1625 oldRotationYs[i] = cl.getRotationY(); 1626 newXs[i] = x; 1627 newYs[i] = y; 1628 newScaleXs[i] = shrinkFactor * rotationScaleX * extraShrinkFactor; 1629 newScaleYs[i] = shrinkFactor * rotationScaleY * extraShrinkFactor; 1630 newBackgroundAlphas[i] = finalAlpha; 1631 newRotationYs[i] = rotation; 1632 } else { 1633 cl.setX((int)x); 1634 cl.setY((int)y); 1635 cl.setScaleX(shrinkFactor * rotationScaleX * extraShrinkFactor); 1636 cl.setScaleY(shrinkFactor * rotationScaleY * extraShrinkFactor); 1637 cl.setBackgroundAlpha(finalAlpha); 1638 cl.setAlpha(finalAlpha); 1639 cl.setRotationY(rotation); 1640 mShrinkAnimationListener.onAnimationEnd(null); 1641 } 1642 // increment newX for the next screen 1643 x += scaledPageWidth + extraScaledSpacing; 1644 } 1645 1646 float wallpaperOffset = 0.5f; 1647 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 1648 int wallpaperTravelHeight = (int) (display.getHeight() * 1649 wallpaperTravelToScreenHeightRatio(display.getWidth(), display.getHeight())); 1650 float offsetFromCenter = (wallpaperTravelHeight / (float) mWallpaperHeight) / 2f; 1651 boolean isLandscape = display.getWidth() > display.getHeight(); 1652 1653 final boolean enableWallpaperEffects = isHardwareAccelerated(); 1654 if (enableWallpaperEffects) { 1655 switch (shrinkState) { 1656 // animating in 1657 case TOP: 1658 // customize 1659 wallpaperOffset = 0.5f + offsetFromCenter; 1660 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.46f : 0.44f); 1661 break; 1662 case MIDDLE: 1663 case SPRING_LOADED: 1664 wallpaperOffset = 0.5f; 1665 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.34f : 0.32f); 1666 break; 1667 case BOTTOM_HIDDEN: 1668 case BOTTOM_VISIBLE: 1669 // allapps 1670 wallpaperOffset = 0.5f - offsetFromCenter; 1671 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.34f : 0.32f); 1672 break; 1673 } 1674 } 1675 1676 setLayoutScale(1.0f); 1677 if (animated) { 1678 if (enableWallpaperEffects) { 1679 mWallpaperOffset.setHorizontalCatchupConstant(0.46f); 1680 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1681 } 1682 1683 mSyncWallpaperOffsetWithScroll = false; 1684 1685 ValueAnimator animWithInterpolator = 1686 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1687 animWithInterpolator.setInterpolator(mZoomOutInterpolator); 1688 1689 final float oldHorizontalWallpaperOffset = getHorizontalWallpaperOffset(); 1690 final float oldVerticalWallpaperOffset = getVerticalWallpaperOffset(); 1691 final float newHorizontalWallpaperOffset = 0.5f; 1692 final float newVerticalWallpaperOffset = wallpaperOffset; 1693 animWithInterpolator.addUpdateListener(new LauncherAnimatorUpdateListener() { 1694 public void onAnimationUpdate(float a, float b) { 1695 if (b == 0f) { 1696 // an optimization, and required for correct behavior. 1697 return; 1698 } 1699 fastInvalidate(); 1700 if (enableWallpaperEffects) { 1701 setHorizontalWallpaperOffset( 1702 a * oldHorizontalWallpaperOffset + b * newHorizontalWallpaperOffset); 1703 setVerticalWallpaperOffset( 1704 a * oldVerticalWallpaperOffset + b * newVerticalWallpaperOffset); 1705 } 1706 for (int i = 0; i < screenCount; i++) { 1707 final CellLayout cl = (CellLayout) getChildAt(i); 1708 cl.fastInvalidate(); 1709 cl.setFastX(a * oldXs[i] + b * newXs[i]); 1710 cl.setFastY(a * oldYs[i] + b * newYs[i]); 1711 cl.setFastScaleX(a * oldScaleXs[i] + b * newScaleXs[i]); 1712 cl.setFastScaleY(a * oldScaleYs[i] + b * newScaleYs[i]); 1713 cl.setFastBackgroundAlpha( 1714 a * oldBackgroundAlphas[i] + b * newBackgroundAlphas[i]); 1715 cl.setFastAlpha(a * oldAlphas[i] + b * newAlphas[i]); 1716 cl.setFastRotationY(a * oldRotationYs[i] + b * newRotationYs[i]); 1717 } 1718 } 1719 }); 1720 mAnimator.playTogether(animWithInterpolator); 1721 mAnimator.addListener(mShrinkAnimationListener); 1722 mAnimator.start(); 1723 } else if (enableWallpaperEffects) { 1724 setVerticalWallpaperOffset(wallpaperOffset); 1725 setHorizontalWallpaperOffset(0.5f); 1726 updateWallpaperOffsetImmediately(); 1727 } 1728 setChildrenDrawnWithCacheEnabled(true); 1729 1730 if (shrinkState == ShrinkState.TOP) { 1731 showBackgroundGradientForCustomizeTray(); 1732 } else { 1733 showBackgroundGradientForAllApps(); 1734 } 1735 } 1736 1737 /* 1738 * This interpolator emulates the rate at which the perceived scale of an object changes 1739 * as its distance from a camera increases. When this interpolator is applied to a scale 1740 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1741 * from the camera. 1742 */ 1743 static class ZInterpolator implements TimeInterpolator { 1744 private float focalLength; 1745 1746 public ZInterpolator(float foc) { 1747 focalLength = foc; 1748 } 1749 1750 public float getInterpolation(float input) { 1751 return (1.0f - focalLength / (focalLength + input)) / 1752 (1.0f - focalLength / (focalLength + 1.0f)); 1753 } 1754 } 1755 1756 /* 1757 * The exact reverse of ZInterpolator. 1758 */ 1759 static class InverseZInterpolator implements TimeInterpolator { 1760 private ZInterpolator zInterpolator; 1761 public InverseZInterpolator(float foc) { 1762 zInterpolator = new ZInterpolator(foc); 1763 } 1764 public float getInterpolation(float input) { 1765 return 1 - zInterpolator.getInterpolation(1 - input); 1766 } 1767 } 1768 1769 /* 1770 * ZInterpolator compounded with an ease-out. 1771 */ 1772 static class ZoomOutInterpolator implements TimeInterpolator { 1773 private final ZInterpolator zInterpolator = new ZInterpolator(0.2f); 1774 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(1.8f); 1775 1776 public float getInterpolation(float input) { 1777 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1778 } 1779 } 1780 1781 /* 1782 * InvereZInterpolator compounded with an ease-out. 1783 */ 1784 static class ZoomInInterpolator implements TimeInterpolator { 1785 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1786 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1787 1788 public float getInterpolation(float input) { 1789 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1790 } 1791 } 1792 1793 private final ZoomOutInterpolator mZoomOutInterpolator = new ZoomOutInterpolator(); 1794 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1795 1796 private void updateWhichPagesAcceptDrops(ShrinkState state) { 1797 updateWhichPagesAcceptDropsHelper(state, false, 1, 1); 1798 } 1799 1800 private void updateWhichPagesAcceptDropsDuringDrag(ShrinkState state, int spanX, int spanY) { 1801 updateWhichPagesAcceptDropsHelper(state, true, spanX, spanY); 1802 } 1803 1804 private void updateWhichPagesAcceptDropsHelper( 1805 ShrinkState state, boolean isDragHappening, int spanX, int spanY) { 1806 final int screenCount = getChildCount(); 1807 for (int i = 0; i < screenCount; i++) { 1808 CellLayout cl = (CellLayout) getChildAt(i); 1809 cl.setIsDragOccuring(isDragHappening); 1810 if (state == null) { 1811 // If we are not in a shrunken state, mark all cell layouts as droppable (if they 1812 // have the space) 1813 cl.setAcceptsDrops(cl.findCellForSpan(null, spanX, spanY)); 1814 } else { 1815 switch (state) { 1816 case TOP: 1817 cl.setIsDefaultDropTarget(i == mCurrentPage); 1818 case BOTTOM_HIDDEN: 1819 case BOTTOM_VISIBLE: 1820 case SPRING_LOADED: 1821 if (state != ShrinkState.TOP) { 1822 cl.setIsDefaultDropTarget(false); 1823 } 1824 if (!isDragHappening) { 1825 // even if a drag isn't happening, we don't want to show a screen as 1826 // accepting drops if it doesn't have at least one free cell 1827 spanX = 1; 1828 spanY = 1; 1829 } 1830 // the page accepts drops if we can find at least one empty spot 1831 cl.setAcceptsDrops(cl.findCellForSpan(null, spanX, spanY)); 1832 break; 1833 default: 1834 throw new RuntimeException("Unhandled ShrinkState " + state); 1835 } 1836 } 1837 } 1838 } 1839 1840 /* 1841 * 1842 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1843 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1844 * 1845 * These methods mark the appropriate pages as accepting drops (which alters their visual 1846 * appearance). 1847 * 1848 */ 1849 public void onDragStartedWithItem(View v) { 1850 mIsDragInProcess = true; 1851 1852 final Canvas canvas = new Canvas(); 1853 1854 // We need to add extra padding to the bitmap to make room for the glow effect 1855 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1856 1857 // The outline is used to visualize where the item will land if dropped 1858 mDragOutline = createDragOutline(v, canvas, bitmapPadding); 1859 } 1860 1861 public void onDragStartedWithItemSpans(int spanX, int spanY, Bitmap b) { 1862 mIsDragInProcess = true; 1863 1864 final Canvas canvas = new Canvas(); 1865 1866 // We need to add extra padding to the bitmap to make room for the glow effect 1867 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1868 1869 CellLayout cl = (CellLayout) getChildAt(0); 1870 1871 int[] size = cl.cellSpansToSize(spanX, spanY); 1872 1873 // The outline is used to visualize where the item will land if dropped 1874 mDragOutline = createDragOutline(b, canvas, bitmapPadding, size[0], size[1]); 1875 1876 updateWhichPagesAcceptDropsDuringDrag(mShrinkState, spanX, spanY); 1877 } 1878 1879 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1880 // never dragged over 1881 public void onDragStopped(boolean success) { 1882 mLastDragView = null; 1883 // In the success case, DragController has already called onDragExit() 1884 if (!success) { 1885 doDragExit(); 1886 } 1887 mIsDragInProcess = false; 1888 updateWhichPagesAcceptDrops(mShrinkState); 1889 } 1890 1891 // We call this when we trigger an unshrink by clicking on the CellLayout cl 1892 public void unshrink(CellLayout clThatWasClicked) { 1893 unshrink(clThatWasClicked, false); 1894 } 1895 1896 public void unshrink(CellLayout clThatWasClicked, boolean springLoaded) { 1897 int newCurrentPage = indexOfChild(clThatWasClicked); 1898 if (mIsSmall) { 1899 if (springLoaded) { 1900 setLayoutScale(SPRING_LOADED_DRAG_SHRINK_FACTOR); 1901 } 1902 scrollToNewPageWithoutMovingPages(newCurrentPage); 1903 unshrink(true, springLoaded); 1904 } 1905 } 1906 1907 1908 public void enterSpringLoadedDragMode(CellLayout clThatWasClicked) { 1909 mShrinkState = ShrinkState.SPRING_LOADED; 1910 unshrink(clThatWasClicked, true); 1911 mDragTargetLayout.onDragEnter(); 1912 } 1913 1914 public void exitSpringLoadedDragMode(ShrinkState shrinkState) { 1915 shrink(shrinkState); 1916 if (mDragTargetLayout != null) { 1917 mDragTargetLayout.onDragExit(); 1918 } 1919 } 1920 1921 public void exitWidgetResizeMode() { 1922 DragLayer dragLayer = (DragLayer) mLauncher.findViewById(R.id.drag_layer); 1923 dragLayer.clearAllResizeFrames(); 1924 } 1925 1926 void unshrink(boolean animated) { 1927 unshrink(animated, false); 1928 } 1929 1930 void unshrink(boolean animated, boolean springLoaded) { 1931 mWaitingToShrink = false; 1932 if (mIsSmall) { 1933 float finalScaleFactor = 1.0f; 1934 float finalBackgroundAlpha = 0.0f; 1935 if (springLoaded) { 1936 finalScaleFactor = SPRING_LOADED_DRAG_SHRINK_FACTOR; 1937 finalBackgroundAlpha = 1.0f; 1938 } else { 1939 mIsSmall = false; 1940 } 1941 if (mAnimator != null) { 1942 mAnimator.cancel(); 1943 } 1944 1945 mAnimator = new AnimatorSet(); 1946 final int screenCount = getChildCount(); 1947 1948 final int duration = getResources().getInteger(R.integer.config_workspaceUnshrinkTime); 1949 1950 final float[] oldTranslationXs = new float[getChildCount()]; 1951 final float[] oldTranslationYs = new float[getChildCount()]; 1952 final float[] oldScaleXs = new float[getChildCount()]; 1953 final float[] oldScaleYs = new float[getChildCount()]; 1954 final float[] oldBackgroundAlphas = new float[getChildCount()]; 1955 final float[] oldBackgroundAlphaMultipliers = new float[getChildCount()]; 1956 final float[] oldAlphas = new float[getChildCount()]; 1957 final float[] oldRotationYs = new float[getChildCount()]; 1958 final float[] newTranslationXs = new float[getChildCount()]; 1959 final float[] newTranslationYs = new float[getChildCount()]; 1960 final float[] newScaleXs = new float[getChildCount()]; 1961 final float[] newScaleYs = new float[getChildCount()]; 1962 final float[] newBackgroundAlphas = new float[getChildCount()]; 1963 final float[] newBackgroundAlphaMultipliers = new float[getChildCount()]; 1964 final float[] newAlphas = new float[getChildCount()]; 1965 final float[] newRotationYs = new float[getChildCount()]; 1966 1967 for (int i = 0; i < screenCount; i++) { 1968 final CellLayout cl = (CellLayout)getChildAt(i); 1969 float finalAlphaValue = 0f; 1970 float rotation = 0f; 1971 if (LauncherApplication.isScreenLarge()) { 1972 finalAlphaValue = (i == mCurrentPage) ? 1.0f : 0.0f; 1973 1974 if (i < mCurrentPage) { 1975 rotation = WORKSPACE_ROTATION; 1976 } else if (i > mCurrentPage) { 1977 rotation = -WORKSPACE_ROTATION; 1978 } 1979 } else { 1980 // Don't hide the side panes on the phone if we don't also update the side pages 1981 // alpha. See screenScrolled(). 1982 finalAlphaValue = 1f; 1983 } 1984 float finalAlphaMultiplierValue = 1985 ((i == mCurrentPage) && (mShrinkState != ShrinkState.SPRING_LOADED)) ? 1986 0.0f : 1.0f; 1987 1988 float translation = 0f; 1989 1990 // If the screen is not xlarge, then don't rotate the CellLayouts 1991 // NOTE: If we don't update the side pages alpha, then we should not hide the side 1992 // pages. see unshrink(). 1993 if (LauncherApplication.isScreenLarge()) { 1994 translation = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1995 } 1996 1997 oldAlphas[i] = cl.getAlpha(); 1998 newAlphas[i] = finalAlphaValue; 1999 if (animated) { 2000 oldTranslationXs[i] = cl.getTranslationX(); 2001 oldTranslationYs[i] = cl.getTranslationY(); 2002 oldScaleXs[i] = cl.getScaleX(); 2003 oldScaleYs[i] = cl.getScaleY(); 2004 oldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 2005 oldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 2006 oldRotationYs[i] = cl.getRotationY(); 2007 2008 newTranslationXs[i] = translation; 2009 newTranslationYs[i] = 0f; 2010 newScaleXs[i] = finalScaleFactor; 2011 newScaleYs[i] = finalScaleFactor; 2012 newBackgroundAlphas[i] = finalBackgroundAlpha; 2013 newBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 2014 newRotationYs[i] = rotation; 2015 } else { 2016 cl.setTranslationX(translation); 2017 cl.setTranslationY(0.0f); 2018 cl.setScaleX(finalScaleFactor); 2019 cl.setScaleY(finalScaleFactor); 2020 cl.setBackgroundAlpha(0.0f); 2021 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 2022 cl.setAlpha(finalAlphaValue); 2023 cl.setRotationY(rotation); 2024 mUnshrinkAnimationListener.onAnimationEnd(null); 2025 } 2026 } 2027 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 2028 boolean isLandscape = display.getWidth() > display.getHeight(); 2029 final boolean enableWallpaperEffects = isHardwareAccelerated(); 2030 if (enableWallpaperEffects) { 2031 switch (mShrinkState) { 2032 // animating out 2033 case TOP: 2034 // customize 2035 if (animated) { 2036 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.65f : 0.62f); 2037 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.65f : 0.62f); 2038 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 2039 } 2040 break; 2041 case MIDDLE: 2042 case SPRING_LOADED: 2043 if (animated) { 2044 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.49f : 0.46f); 2045 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.49f : 0.46f); 2046 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 2047 } 2048 break; 2049 case BOTTOM_HIDDEN: 2050 case BOTTOM_VISIBLE: 2051 // all apps 2052 if (animated) { 2053 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.65f : 0.65f); 2054 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.65f : 0.65f); 2055 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 2056 } 2057 break; 2058 } 2059 } 2060 if (animated) { 2061 ValueAnimator animWithInterpolator = 2062 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 2063 animWithInterpolator.setInterpolator(mZoomInInterpolator); 2064 2065 final float oldHorizontalWallpaperOffset = enableWallpaperEffects ? 2066 getHorizontalWallpaperOffset() : 0; 2067 final float oldVerticalWallpaperOffset = enableWallpaperEffects ? 2068 getVerticalWallpaperOffset() : 0; 2069 final float newHorizontalWallpaperOffset = enableWallpaperEffects ? 2070 wallpaperOffsetForCurrentScroll() : 0; 2071 final float newVerticalWallpaperOffset = enableWallpaperEffects ? 0.5f : 0; 2072 animWithInterpolator.addUpdateListener(new LauncherAnimatorUpdateListener() { 2073 public void onAnimationUpdate(float a, float b) { 2074 if (b == 0f) { 2075 // an optimization, but not required 2076 return; 2077 } 2078 fastInvalidate(); 2079 if (enableWallpaperEffects) { 2080 setHorizontalWallpaperOffset(a * oldHorizontalWallpaperOffset 2081 + b * newHorizontalWallpaperOffset); 2082 setVerticalWallpaperOffset(a * oldVerticalWallpaperOffset 2083 + b * newVerticalWallpaperOffset); 2084 } 2085 for (int i = 0; i < screenCount; i++) { 2086 final CellLayout cl = (CellLayout) getChildAt(i); 2087 cl.fastInvalidate(); 2088 cl.setFastTranslationX( 2089 a * oldTranslationXs[i] + b * newTranslationXs[i]); 2090 cl.setFastTranslationY( 2091 a * oldTranslationYs[i] + b * newTranslationYs[i]); 2092 cl.setFastScaleX(a * oldScaleXs[i] + b * newScaleXs[i]); 2093 cl.setFastScaleY(a * oldScaleYs[i] + b * newScaleYs[i]); 2094 cl.setFastBackgroundAlpha( 2095 a * oldBackgroundAlphas[i] + b * newBackgroundAlphas[i]); 2096 cl.setBackgroundAlphaMultiplier(a * oldBackgroundAlphaMultipliers[i] + 2097 b * newBackgroundAlphaMultipliers[i]); 2098 cl.setFastAlpha(a * oldAlphas[i] + b * newAlphas[i]); 2099 } 2100 } 2101 }); 2102 2103 ValueAnimator rotationAnim = 2104 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 2105 rotationAnim.setInterpolator(new DecelerateInterpolator(2.0f)); 2106 rotationAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 2107 public void onAnimationUpdate(float a, float b) { 2108 // don't invalidate workspace because we did it above 2109 if (b == 0f) { 2110 // an optimization, but not required 2111 return; 2112 } 2113 for (int i = 0; i < screenCount; i++) { 2114 final CellLayout cl = (CellLayout) getChildAt(i); 2115 cl.setFastRotationY(a * oldRotationYs[i] + b * newRotationYs[i]); 2116 } 2117 } 2118 }); 2119 2120 mAnimator.playTogether(animWithInterpolator, rotationAnim); 2121 // If we call this when we're not animated, onAnimationEnd is never called on 2122 // the listener; make sure we only use the listener when we're actually animating 2123 mAnimator.addListener(mUnshrinkAnimationListener); 2124 mAnimator.start(); 2125 } else { 2126 if (enableWallpaperEffects) { 2127 setHorizontalWallpaperOffset(wallpaperOffsetForCurrentScroll()); 2128 setVerticalWallpaperOffset(0.5f); 2129 updateWallpaperOffsetImmediately(); 2130 } 2131 } 2132 } 2133 2134 if (!springLoaded) { 2135 hideBackgroundGradient(); 2136 } 2137 } 2138 2139 /** 2140 * Draw the View v into the given Canvas. 2141 * 2142 * @param v the view to draw 2143 * @param destCanvas the canvas to draw on 2144 * @param padding the horizontal and vertical padding to use when drawing 2145 */ 2146 private void drawDragView(View v, Canvas destCanvas, int padding) { 2147 final Rect clipRect = mTempRect; 2148 v.getDrawingRect(clipRect); 2149 2150 // For a TextView, adjust the clip rect so that we don't include the text label 2151 if (v instanceof FolderIcon) { 2152 } else if (v instanceof BubbleTextView) { 2153 final BubbleTextView tv = (BubbleTextView) v; 2154 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 2155 tv.getLayout().getLineTop(0); 2156 } else if (v instanceof TextView) { 2157 final TextView tv = (TextView) v; 2158 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 2159 tv.getLayout().getLineTop(0); 2160 } 2161 2162 // Draw the View into the bitmap. 2163 // The translate of scrollX and scrollY is necessary when drawing TextViews, because 2164 // they set scrollX and scrollY to large values to achieve centered text 2165 2166 destCanvas.save(); 2167 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 2168 destCanvas.clipRect(clipRect, Op.REPLACE); 2169 v.draw(destCanvas); 2170 destCanvas.restore(); 2171 } 2172 2173 /** 2174 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2175 * Responsibility for the bitmap is transferred to the caller. 2176 */ 2177 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 2178 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 2179 final Bitmap b = Bitmap.createBitmap( 2180 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 2181 2182 canvas.setBitmap(b); 2183 drawDragView(v, canvas, padding); 2184 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2185 return b; 2186 } 2187 2188 /** 2189 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2190 * Responsibility for the bitmap is transferred to the caller. 2191 */ 2192 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h) { 2193 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 2194 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 2195 canvas.setBitmap(b); 2196 2197 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 2198 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 2199 (h - padding) / (float) orig.getHeight()); 2200 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 2201 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 2202 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 2203 2204 // center the image 2205 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 2206 2207 Paint p = new Paint(); 2208 p.setFilterBitmap(true); 2209 canvas.drawBitmap(orig, src, dst, p); 2210 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2211 2212 return b; 2213 } 2214 2215 /** 2216 * Creates a drag outline to represent a drop (that we don't have the actual information for 2217 * yet). May be changed in the future to alter the drop outline slightly depending on the 2218 * clip description mime data. 2219 */ 2220 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 2221 Resources r = getResources(); 2222 final int outlineColor = r.getColor(R.color.drag_outline_color); 2223 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 2224 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 2225 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 2226 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 2227 final Bitmap b = Bitmap.createBitmap( 2228 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 2229 2230 canvas.setBitmap(b); 2231 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 2232 rectRadius, rectRadius, mExternalDragOutlinePaint); 2233 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2234 return b; 2235 } 2236 2237 /** 2238 * Returns a new bitmap to show when the given View is being dragged around. 2239 * Responsibility for the bitmap is transferred to the caller. 2240 */ 2241 private Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 2242 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 2243 final Bitmap b = Bitmap.createBitmap( 2244 mDragOutline.getWidth(), mDragOutline.getHeight(), Bitmap.Config.ARGB_8888); 2245 2246 canvas.setBitmap(b); 2247 canvas.drawBitmap(mDragOutline, 0, 0, null); 2248 drawDragView(v, canvas, padding); 2249 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 2250 2251 return b; 2252 } 2253 2254 void startDrag(CellLayout.CellInfo cellInfo) { 2255 View child = cellInfo.cell; 2256 2257 // Make sure the drag was started by a long press as opposed to a long click. 2258 if (!child.isInTouchMode()) { 2259 return; 2260 } 2261 2262 mDragInfo = cellInfo; 2263 2264 CellLayout current = (CellLayout) getChildAt(cellInfo.screen); 2265 current.onDragChild(child); 2266 2267 child.clearFocus(); 2268 child.setPressed(false); 2269 2270 final Canvas canvas = new Canvas(); 2271 2272 // We need to add extra padding to the bitmap to make room for the glow effect 2273 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2274 2275 // The outline is used to visualize where the item will land if dropped 2276 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 2277 2278 // The drag bitmap follows the touch point around on the screen 2279 final Bitmap b = createDragBitmap(child, canvas, bitmapPadding); 2280 2281 final int bmpWidth = b.getWidth(); 2282 final int bmpHeight = b.getHeight(); 2283 2284 child.getLocationOnScreen(mTempXY); 2285 final int screenX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 2286 final int screenY = (int) mTempXY[1] + (child.getHeight() - bmpHeight) / 2; 2287 2288 Rect dragRect = null; 2289 if ((child instanceof BubbleTextView) && !(child instanceof FolderIcon)) { 2290 int iconSize = getResources().getDimensionPixelSize(R.dimen.app_icon_size); 2291 int top = child.getPaddingTop(); 2292 int left = (bmpWidth - iconSize) / 2; 2293 int right = left + iconSize; 2294 int bottom = top + iconSize; 2295 dragRect = new Rect(left, top, right, bottom); 2296 } 2297 2298 mLauncher.lockScreenOrientation(); 2299 mDragController.startDrag(b, screenX, screenY, this, child.getTag(), 2300 DragController.DRAG_ACTION_MOVE, dragRect); 2301 b.recycle(); 2302 } 2303 2304 void addApplicationShortcut(ShortcutInfo info, int screen, int cellX, int cellY, 2305 boolean insertAtFirst, int intersectX, int intersectY) { 2306 final CellLayout cellLayout = (CellLayout) getChildAt(screen); 2307 View view = mLauncher.createShortcut(R.layout.application, cellLayout, (ShortcutInfo) info); 2308 2309 final int[] cellXY = new int[2]; 2310 cellLayout.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 2311 addInScreen(view, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 2312 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 2313 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2314 cellXY[0], cellXY[1]); 2315 } 2316 2317 private void setPositionForDropAnimation( 2318 View dragView, int dragViewX, int dragViewY, View parent, View child) { 2319 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 2320 2321 // Based on the position of the drag view, find the top left of the original view 2322 int viewX = dragViewX + (dragView.getWidth() - child.getMeasuredWidth()) / 2; 2323 int viewY = dragViewY + (dragView.getHeight() - child.getMeasuredHeight()) / 2; 2324 2325 CellLayout layout = (CellLayout) parent; 2326 2327 // Set its old pos (in the new parent's coordinates); it will be animated 2328 // in animateViewIntoPosition after the next layout pass 2329 lp.oldX = viewX - (layout.getLeft() + layout.getLeftPadding() - mScrollX); 2330 lp.oldY = viewY - (layout.getTop() + layout.getTopPadding() - mScrollY); 2331 } 2332 2333 /* 2334 * We should be careful that this method cannot result in any synchronous requestLayout() 2335 * calls, as it is called from onLayout(). 2336 */ 2337 public void animateViewIntoPosition(final View view) { 2338 final CellLayout parent = (CellLayout) view.getParent().getParent(); 2339 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2340 2341 // Convert the animation params to be relative to the Workspace, not the CellLayout 2342 final int fromX = lp.oldX + parent.getLeft() + parent.getLeftPadding(); 2343 final int fromY = lp.oldY + parent.getTop() + parent.getTopPadding(); 2344 2345 final int dx = lp.x - lp.oldX; 2346 final int dy = lp.y - lp.oldY; 2347 2348 // Calculate the duration of the animation based on the object's distance 2349 final float dist = (float) Math.sqrt(dx*dx + dy*dy); 2350 final Resources res = getResources(); 2351 final float maxDist = (float) res.getInteger(R.integer.config_dropAnimMaxDist); 2352 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration); 2353 if (dist < maxDist) { 2354 duration *= mQuintEaseOutInterpolator.getInterpolation(dist / maxDist); 2355 } 2356 2357 if (mDropAnim != null) { 2358 mDropAnim.end(); 2359 } 2360 mDropAnim = new ValueAnimator(); 2361 mDropAnim.setInterpolator(mQuintEaseOutInterpolator); 2362 2363 // The view is invisible during the animation; we render it manually. 2364 mDropAnim.addListener(new AnimatorListenerAdapter() { 2365 public void onAnimationStart(Animator animation) { 2366 // Set this here so that we don't render it until the animation begins 2367 mDropView = view; 2368 } 2369 2370 public void onAnimationEnd(Animator animation) { 2371 if (mDropView != null) { 2372 mDropView.setVisibility(View.VISIBLE); 2373 mDropView = null; 2374 } 2375 } 2376 }); 2377 2378 mDropAnim.setDuration(duration); 2379 mDropAnim.setFloatValues(0.0f, 1.0f); 2380 mDropAnim.removeAllUpdateListeners(); 2381 mDropAnim.addUpdateListener(new AnimatorUpdateListener() { 2382 public void onAnimationUpdate(ValueAnimator animation) { 2383 final float percent = (Float) animation.getAnimatedValue(); 2384 // Invalidate the old position 2385 invalidate(mDropViewPos[0], mDropViewPos[1], 2386 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 2387 2388 mDropViewPos[0] = fromX + (int) (percent * dx + 0.5f); 2389 mDropViewPos[1] = fromY + (int) (percent * dy + 0.5f); 2390 invalidate(mDropViewPos[0], mDropViewPos[1], 2391 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 2392 } 2393 }); 2394 2395 mDropAnim.start(); 2396 } 2397 2398 /** 2399 * {@inheritDoc} 2400 */ 2401 public boolean acceptDrop(DragObject d) { 2402 2403 // If it's an external drop (e.g. from All Apps), check if it should be accepted 2404 if (d.dragSource != this) { 2405 // Don't accept the drop if we're not over a screen at time of drop 2406 if (mDragTargetLayout == null || !mDragTargetLayout.getAcceptsDrops()) { 2407 return false; 2408 } 2409 2410 final CellLayout.CellInfo dragCellInfo = mDragInfo; 2411 final int spanX = dragCellInfo == null ? 1 : dragCellInfo.spanX; 2412 final int spanY = dragCellInfo == null ? 1 : dragCellInfo.spanY; 2413 2414 final View ignoreView = dragCellInfo == null ? null : dragCellInfo.cell; 2415 2416 // Don't accept the drop if there's no room for the item 2417 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 2418 mLauncher.showOutOfSpaceMessage(); 2419 return false; 2420 } 2421 } 2422 return true; 2423 } 2424 2425 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int originX, int originY) { 2426 mTargetCell = findNearestArea(originX, originY, 1, 1, target, mTargetCell); 2427 2428 View v = target.getChildAt(mTargetCell[0], mTargetCell[1]); 2429 boolean hasntMoved = mDragInfo != null && (mDragInfo.cellX == mTargetCell[0] && 2430 mDragInfo.cellY == mTargetCell[1]); 2431 2432 if (v == null || hasntMoved) return false; 2433 2434 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2435 boolean willBecomeShortcut = 2436 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2437 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2438 2439 return (aboveShortcut && willBecomeShortcut); 2440 } 2441 2442 boolean createUserFolderIfNecessary(View newView, CellLayout target, int originX, 2443 int originY, boolean external) { 2444 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2445 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2446 2447 // First we find the cell nearest to point at which the item is dropped, without 2448 // any consideration to whether there is an item there. 2449 mTargetCell = findNearestArea(originX, originY, 2450 spanX, spanY, target, 2451 mTargetCell); 2452 2453 View v = target.getChildAt(mTargetCell[0], mTargetCell[1]); 2454 boolean hasntMoved = mDragInfo != null && (mDragInfo.cellX == mTargetCell[0] && 2455 mDragInfo.cellY == mTargetCell[1]); 2456 2457 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2458 mCreateUserFolderOnDrop = false; 2459 final int screen = (mTargetCell == null) ? 2460 mDragInfo.screen : indexOfChild(target); 2461 2462 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2463 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2464 2465 if (aboveShortcut && willBecomeShortcut) { 2466 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2467 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2468 // if the drag started here, we need to remove it from the workspace 2469 if (!external) { 2470 int fromScreen = mDragInfo.screen; 2471 CellLayout sourceLayout = (CellLayout) getChildAt(fromScreen); 2472 sourceLayout.removeView(newView); 2473 } 2474 2475 target.removeView(v); 2476 FolderIcon fi = mLauncher.addFolder(screen, mTargetCell[0], mTargetCell[1]); 2477 destInfo.cellX = -1; 2478 destInfo.cellY = -1; 2479 sourceInfo.cellX = -1; 2480 sourceInfo.cellY = -1; 2481 fi.addItem(destInfo); 2482 fi.addItem(sourceInfo); 2483 return true; 2484 } 2485 return false; 2486 } 2487 2488 public void onDrop(DragObject d) { 2489 2490 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2491 mDragViewVisualCenter); 2492 2493 // We want the point to be mapped to the dragTarget. 2494 if (mDragTargetLayout != null) { 2495 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2496 } 2497 2498 // When you are in customization mode and drag to a particular screen, make that the 2499 // new current/default screen, so any subsequent taps add items to that screen 2500 if (!mLauncher.isAllAppsVisible()) { 2501 int dragTargetIndex = indexOfChild(mDragTargetLayout); 2502 if (mCurrentPage != dragTargetIndex && (mIsSmall || mIsInUnshrinkAnimation)) { 2503 scrollToNewPageWithoutMovingPages(dragTargetIndex); 2504 } 2505 } 2506 2507 if (d.dragSource != this) { 2508 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2509 (int) mDragViewVisualCenter[1] }; 2510 if (LauncherApplication.isScreenLarge() && (mIsSmall || mIsInUnshrinkAnimation) 2511 && !mLauncher.isAllAppsVisible()) { 2512 // When the workspace is shrunk and the drop comes from customize, don't actually 2513 // add the item to the screen -- customize will do this itself 2514 ((ItemInfo) d.dragInfo).dropPos = touchXY; 2515 return; 2516 } 2517 onDropExternal(touchXY, d.dragInfo, mDragTargetLayout, false, d.dragView); 2518 } else if (mDragInfo != null) { 2519 final View cell = mDragInfo.cell; 2520 CellLayout dropTargetLayout = mDragTargetLayout; 2521 boolean dropInscrollArea = false; 2522 2523 // Handle the case where the user drops when in the scroll area. 2524 // This is treated as a drop on the adjacent page. 2525 if (dropTargetLayout == null && mInScrollArea) { 2526 dropInscrollArea = true; 2527 if (mPendingScrollDirection == DragController.SCROLL_LEFT) { 2528 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage - 1); 2529 } else if (mPendingScrollDirection == DragController.SCROLL_RIGHT) { 2530 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage + 1); 2531 } 2532 } 2533 2534 if (dropTargetLayout != null) { 2535 // Move internally 2536 final int screen = (mTargetCell == null) ? 2537 mDragInfo.screen : indexOfChild(dropTargetLayout); 2538 2539 // If the item being dropped is a shortcut and the nearest drop cell also contains 2540 // a shortcut, then create a folder with the two shortcuts. 2541 if (!dropInscrollArea && createUserFolderIfNecessary(cell, dropTargetLayout, 2542 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], false)) { 2543 return; 2544 } 2545 2546 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2547 // we need to find the nearest cell location that is vacant 2548 mTargetCell = findNearestVacantArea((int) mDragViewVisualCenter[0], 2549 (int) mDragViewVisualCenter[1], mDragInfo.spanX, mDragInfo.spanY, cell, 2550 dropTargetLayout, mTargetCell); 2551 2552 if (screen != mCurrentPage) { 2553 snapToPage(screen); 2554 } 2555 2556 if (mTargetCell != null) { 2557 if (screen != mDragInfo.screen) { 2558 // Reparent the view 2559 ((CellLayout) getChildAt(mDragInfo.screen)).removeView(cell); 2560 addInScreen(cell, screen, mTargetCell[0], mTargetCell[1], 2561 mDragInfo.spanX, mDragInfo.spanY); 2562 } 2563 2564 // update the item's position after drop 2565 final ItemInfo info = (ItemInfo) cell.getTag(); 2566 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2567 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 2568 lp.cellX = mTargetCell[0]; 2569 lp.cellY = mTargetCell[1]; 2570 cell.setId(LauncherModel.getCellLayoutChildId(-1, mDragInfo.screen, 2571 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2572 2573 if (cell instanceof LauncherAppWidgetHostView) { 2574 final CellLayout cellLayout = dropTargetLayout; 2575 // We post this call so that the widget has a chance to be placed 2576 // in its final location 2577 2578 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2579 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2580 if (pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2581 final Runnable resizeRunnable = new Runnable() { 2582 public void run() { 2583 DragLayer dragLayer = (DragLayer) 2584 mLauncher.findViewById(R.id.drag_layer); 2585 dragLayer.addResizeFrame(info, hostView, 2586 cellLayout); 2587 } 2588 }; 2589 post(new Runnable() { 2590 public void run() { 2591 if (!isPageMoving()) { 2592 resizeRunnable.run(); 2593 } else { 2594 mDelayedResizeRunnable = resizeRunnable; 2595 } 2596 } 2597 }); 2598 } 2599 } 2600 2601 LauncherModel.moveItemInDatabase(mLauncher, info, 2602 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2603 lp.cellX, lp.cellY); 2604 } 2605 } 2606 2607 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2608 2609 int loc[] = new int[2]; 2610 getViewLocationRelativeToSelf(d.dragView, loc); 2611 2612 // Prepare it to be animated into its new position 2613 // This must be called after the view has been re-parented 2614 setPositionForDropAnimation(d.dragView, loc[0], loc[1], parent, cell); 2615 boolean animateDrop = !mWasSpringLoadedOnDragExit; 2616 parent.onDropChild(cell, animateDrop); 2617 } 2618 } 2619 2620 private void getViewLocationRelativeToSelf(View v, int[] location) { 2621 getLocationOnScreen(location); 2622 int x = location[0]; 2623 int y = location[1]; 2624 2625 v.getLocationOnScreen(location); 2626 int vX = location[0]; 2627 int vY = location[1]; 2628 2629 location[0] = vX - x; 2630 location[1] = vY - y; 2631 } 2632 2633 public void onDragEnter(DragObject d) { 2634 mDragTargetLayout = null; // Reset the drag state 2635 2636 if (!mIsSmall) { 2637 mDragTargetLayout = getCurrentDropLayout(); 2638 mDragTargetLayout.onDragEnter(); 2639 showOutlines(); 2640 } 2641 } 2642 2643 public DropTarget getDropTargetDelegate(DragObject d) { 2644 2645 if (mIsSmall || mIsInUnshrinkAnimation) { 2646 // If we're shrunken, don't let anyone drag on folders/etc that are on the mini-screens 2647 return null; 2648 } 2649 // We may need to delegate the drag to a child view. If a 1x1 item 2650 // would land in a cell occupied by a DragTarget (e.g. a Folder), 2651 // then drag events should be handled by that child. 2652 2653 ItemInfo item = (ItemInfo) d.dragInfo; 2654 CellLayout currentLayout = getCurrentDropLayout(); 2655 2656 int dragPointX, dragPointY; 2657 if (item.spanX == 1 && item.spanY == 1) { 2658 // For a 1x1, calculate the drop cell exactly as in onDragOver 2659 dragPointX = d.x - d.xOffset; 2660 dragPointY = d.y - d.yOffset; 2661 } else { 2662 // Otherwise, use the exact drag coordinates 2663 dragPointX = d.x; 2664 dragPointY = d.y; 2665 } 2666 dragPointX += mScrollX - currentLayout.getLeft(); 2667 dragPointY += mScrollY - currentLayout.getTop(); 2668 2669 // If we are dragging over a cell that contains a DropTarget that will 2670 // accept the drop, delegate to that DropTarget. 2671 final int[] cellXY = mTempCell; 2672 currentLayout.estimateDropCell(dragPointX, dragPointY, item.spanX, item.spanY, cellXY); 2673 View child = currentLayout.getChildAt(cellXY[0], cellXY[1]); 2674 if (child instanceof DropTarget) { 2675 DropTarget target = (DropTarget)child; 2676 if (target.acceptDrop(d)) { 2677 return target; 2678 } 2679 } 2680 return null; 2681 } 2682 2683 /** 2684 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 2685 * in the returned structure related to the widgets that match the drop (or a null list if it is 2686 * a shortcut drop). If the drop is not accepted then a null structure is returned. 2687 */ 2688 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 2689 final LauncherModel model = mLauncher.getModel(); 2690 final ClipDescription desc = event.getClipDescription(); 2691 final int mimeTypeCount = desc.getMimeTypeCount(); 2692 for (int i = 0; i < mimeTypeCount; ++i) { 2693 final String mimeType = desc.getMimeType(i); 2694 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 2695 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 2696 } else { 2697 final List<WidgetMimeTypeHandlerData> widgets = 2698 model.resolveWidgetsForMimeType(mContext, mimeType); 2699 if (widgets.size() > 0) { 2700 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 2701 } 2702 } 2703 } 2704 return null; 2705 } 2706 2707 /** 2708 * Global drag and drop handler 2709 */ 2710 @Override 2711 public boolean onDragEvent(DragEvent event) { 2712 final ClipDescription desc = event.getClipDescription(); 2713 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 2714 final int[] pos = new int[2]; 2715 layout.getLocationOnScreen(pos); 2716 // We need to offset the drag coordinates to layout coordinate space 2717 final int x = (int) event.getX() - pos[0]; 2718 final int y = (int) event.getY() - pos[1]; 2719 2720 switch (event.getAction()) { 2721 case DragEvent.ACTION_DRAG_STARTED: { 2722 // Validate this drag 2723 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2724 if (test != null) { 2725 boolean isShortcut = (test.second == null); 2726 if (isShortcut) { 2727 // Check if we have enough space on this screen to add a new shortcut 2728 if (!layout.findCellForSpan(pos, 1, 1)) { 2729 Toast.makeText(mContext, mContext.getString(R.string.out_of_space), 2730 Toast.LENGTH_SHORT).show(); 2731 return false; 2732 } 2733 } 2734 } else { 2735 // Show error message if we couldn't accept any of the items 2736 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 2737 Toast.LENGTH_SHORT).show(); 2738 return false; 2739 } 2740 2741 // Create the drag outline 2742 // We need to add extra padding to the bitmap to make room for the glow effect 2743 final Canvas canvas = new Canvas(); 2744 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2745 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 2746 2747 // Show the current page outlines to indicate that we can accept this drop 2748 showOutlines(); 2749 layout.setIsDragOccuring(true); 2750 layout.onDragEnter(); 2751 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2752 2753 return true; 2754 } 2755 case DragEvent.ACTION_DRAG_LOCATION: 2756 // Visualize the drop location 2757 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2758 return true; 2759 case DragEvent.ACTION_DROP: { 2760 // Try and add any shortcuts 2761 final LauncherModel model = mLauncher.getModel(); 2762 final ClipData data = event.getClipData(); 2763 2764 // We assume that the mime types are ordered in descending importance of 2765 // representation. So we enumerate the list of mime types and alert the 2766 // user if any widgets can handle the drop. Only the most preferred 2767 // representation will be handled. 2768 pos[0] = x; 2769 pos[1] = y; 2770 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2771 if (test != null) { 2772 final int index = test.first; 2773 final List<WidgetMimeTypeHandlerData> widgets = test.second; 2774 final boolean isShortcut = (widgets == null); 2775 final String mimeType = desc.getMimeType(index); 2776 if (isShortcut) { 2777 final Intent intent = data.getItemAt(index).getIntent(); 2778 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 2779 onDropExternal(new int[] { x, y }, info, layout, false); 2780 } else { 2781 if (widgets.size() == 1) { 2782 // If there is only one item, then go ahead and add and configure 2783 // that widget 2784 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 2785 final PendingAddWidgetInfo createInfo = 2786 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 2787 mLauncher.addAppWidgetFromDrop(createInfo, mCurrentPage, pos); 2788 } else { 2789 // Show the widget picker dialog if there is more than one widget 2790 // that can handle this data type 2791 final InstallWidgetReceiver.WidgetListAdapter adapter = 2792 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 2793 data, widgets, layout, mCurrentPage, pos); 2794 final AlertDialog.Builder builder = 2795 new AlertDialog.Builder(mContext); 2796 builder.setAdapter(adapter, adapter); 2797 builder.setCancelable(true); 2798 builder.setTitle(mContext.getString( 2799 R.string.external_drop_widget_pick_title)); 2800 builder.setIcon(R.drawable.ic_no_applications); 2801 builder.show(); 2802 } 2803 } 2804 } 2805 return true; 2806 } 2807 case DragEvent.ACTION_DRAG_ENDED: 2808 // Hide the page outlines after the drop 2809 layout.setIsDragOccuring(false); 2810 layout.onDragExit(); 2811 hideOutlines(); 2812 return true; 2813 } 2814 return super.onDragEvent(event); 2815 } 2816 2817 /* 2818 * 2819 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2820 * coordinate space. The argument xy is modified with the return result. 2821 * 2822 */ 2823 void mapPointFromSelfToChild(View v, float[] xy) { 2824 mapPointFromSelfToChild(v, xy, null); 2825 } 2826 2827 /* 2828 * 2829 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2830 * coordinate space. The argument xy is modified with the return result. 2831 * 2832 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2833 * computing it itself; we use this to avoid redundant matrix inversions in 2834 * findMatchingPageForDragOver 2835 * 2836 */ 2837 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2838 if (cachedInverseMatrix == null) { 2839 v.getMatrix().invert(mTempInverseMatrix); 2840 cachedInverseMatrix = mTempInverseMatrix; 2841 } 2842 xy[0] = xy[0] + mScrollX - v.getLeft(); 2843 xy[1] = xy[1] + mScrollY - v.getTop(); 2844 cachedInverseMatrix.mapPoints(xy); 2845 } 2846 2847 /* 2848 * 2849 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2850 * the parent View's coordinate space. The argument xy is modified with the return result. 2851 * 2852 */ 2853 void mapPointFromChildToSelf(View v, float[] xy) { 2854 v.getMatrix().mapPoints(xy); 2855 xy[0] -= (mScrollX - v.getLeft()); 2856 xy[1] -= (mScrollY - v.getTop()); 2857 } 2858 2859 static private float squaredDistance(float[] point1, float[] point2) { 2860 float distanceX = point1[0] - point2[0]; 2861 float distanceY = point2[1] - point2[1]; 2862 return distanceX * distanceX + distanceY * distanceY; 2863 } 2864 2865 /* 2866 * 2867 * Returns true if the passed CellLayout cl overlaps with dragView 2868 * 2869 */ 2870 boolean overlaps(CellLayout cl, DragView dragView, 2871 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2872 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2873 final float[] draggedItemTopLeft = mTempDragCoordinates; 2874 draggedItemTopLeft[0] = dragViewX; 2875 draggedItemTopLeft[1] = dragViewY; 2876 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2877 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2878 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2879 2880 // Transform the dragged item's top left coordinates 2881 // to the CellLayout's local coordinates 2882 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2883 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2884 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2885 2886 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2887 // Transform the dragged item's bottom right coordinates 2888 // to the CellLayout's local coordinates 2889 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2890 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2891 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2892 2893 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2894 float overlap = (overlapRegionRight - overlapRegionLeft) * 2895 (overlapRegionBottom - overlapRegionTop); 2896 if (overlap > 0) { 2897 return true; 2898 } 2899 } 2900 } 2901 return false; 2902 } 2903 2904 /* 2905 * 2906 * This method returns the CellLayout that is currently being dragged to. In order to drag 2907 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2908 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2909 * 2910 * Return null if no CellLayout is currently being dragged over 2911 * 2912 */ 2913 private CellLayout findMatchingPageForDragOver( 2914 DragView dragView, int originX, int originY, int offsetX, int offsetY) { 2915 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2916 // with the item being dragged and then choose the one that's closest to the touch point 2917 final int screenCount = getChildCount(); 2918 CellLayout bestMatchingScreen = null; 2919 float smallestDistSoFar = Float.MAX_VALUE; 2920 2921 for (int i = 0; i < screenCount; i++) { 2922 CellLayout cl = (CellLayout)getChildAt(i); 2923 2924 final float[] touchXy = mTempTouchCoordinates; 2925 touchXy[0] = originX + offsetX; 2926 touchXy[1] = originY + offsetY; 2927 2928 // Transform the touch coordinates to the CellLayout's local coordinates 2929 // If the touch point is within the bounds of the cell layout, we can return immediately 2930 cl.getMatrix().invert(mTempInverseMatrix); 2931 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2932 2933 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2934 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2935 return cl; 2936 } 2937 2938 if (overlaps(cl, dragView, originX, originY, mTempInverseMatrix)) { 2939 // Get the center of the cell layout in screen coordinates 2940 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2941 cellLayoutCenter[0] = cl.getWidth()/2; 2942 cellLayoutCenter[1] = cl.getHeight()/2; 2943 mapPointFromChildToSelf(cl, cellLayoutCenter); 2944 2945 touchXy[0] = originX + offsetX; 2946 touchXy[1] = originY + offsetY; 2947 2948 // Calculate the distance between the center of the CellLayout 2949 // and the touch point 2950 float dist = squaredDistance(touchXy, cellLayoutCenter); 2951 2952 if (dist < smallestDistSoFar) { 2953 smallestDistSoFar = dist; 2954 bestMatchingScreen = cl; 2955 } 2956 } 2957 } 2958 return bestMatchingScreen; 2959 } 2960 2961 // This is used to compute the visual center of the dragView. This point is then 2962 // used to visualize drop locations and determine where to drop an item. The idea is that 2963 // the visual center represents the user's interpretation of where the item is, and hence 2964 // is the appropriate point to use when determining drop location. 2965 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2966 DragView dragView, float[] recycle) { 2967 float res[]; 2968 if (recycle == null) { 2969 res = new float[2]; 2970 } else { 2971 res = recycle; 2972 } 2973 2974 // First off, the drag view has been shifted in a way that is not represented in the 2975 // x and y values or the x/yOffsets. Here we account for that shift. 2976 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2977 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2978 2979 // These represent the visual top and left of drag view if a dragRect was provided. 2980 // If a dragRect was not provided, then they correspond to the actual view left and 2981 // top, as the dragRect is in that case taken to be the entire dragView. 2982 // R.dimen.dragViewOffsetY. 2983 int left = x - xOffset; 2984 int top = y - yOffset; 2985 2986 // In order to find the visual center, we shift by half the dragRect 2987 res[0] = left + dragView.getDragRegion().width() / 2; 2988 res[1] = top + dragView.getDragRegion().height() / 2; 2989 2990 return res; 2991 } 2992 2993 public void onDragOver(DragObject d) { 2994 // When touch is inside the scroll area, skip dragOver actions for the current screen 2995 if (!mInScrollArea) { 2996 CellLayout layout; 2997 int left = d.x - d.xOffset; 2998 int top = d.y - d.yOffset; 2999 3000 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 3001 d.dragView, mDragViewVisualCenter); 3002 3003 boolean shrunken = mIsSmall || mIsInUnshrinkAnimation; 3004 if (shrunken) { 3005 mLastDragView = d.dragView; 3006 mLastDragOriginX = left; 3007 mLastDragOriginY = top; 3008 mLastDragXOffset = d.xOffset; 3009 mLastDragYOffset = d.yOffset; 3010 layout = findMatchingPageForDragOver(d.dragView, left, top, d.xOffset, d.yOffset); 3011 3012 if (layout != null && layout != mDragTargetLayout) { 3013 if (mDragTargetLayout != null) { 3014 mDragTargetLayout.setIsDragOverlapping(false); 3015 mSpringLoadedDragController.onDragExit(); 3016 } 3017 mDragTargetLayout = layout; 3018 3019 // Workaround the fact that we don't actually want spring-loaded mode in phone 3020 // UI yet. 3021 if (LauncherApplication.isScreenLarge()) { 3022 // In spring-loaded mode, we still want the user to be able to hover over a 3023 // full screen (which is traditionally set to not accept drops) if they want 3024 // to get to pages beyond the screen that is full. 3025 boolean allowDragOver = (mDragTargetLayout != null) && 3026 (mDragTargetLayout.getAcceptsDrops() || 3027 (mShrinkState == ShrinkState.SPRING_LOADED)); 3028 if (allowDragOver) { 3029 mDragTargetLayout.setIsDragOverlapping(true); 3030 mSpringLoadedDragController.onDragEnter( 3031 mDragTargetLayout, mShrinkState == ShrinkState.SPRING_LOADED); 3032 } 3033 } 3034 } 3035 } else { 3036 layout = getCurrentDropLayout(); 3037 if (layout != mDragTargetLayout) { 3038 if (mDragTargetLayout != null) { 3039 mDragTargetLayout.onDragExit(); 3040 } 3041 layout.onDragEnter(); 3042 mDragTargetLayout = layout; 3043 } 3044 } 3045 if (!shrunken || mShrinkState == ShrinkState.SPRING_LOADED) { 3046 layout = getCurrentDropLayout(); 3047 3048 final ItemInfo item = (ItemInfo) d.dragInfo; 3049 if (d.dragInfo instanceof LauncherAppWidgetInfo) { 3050 LauncherAppWidgetInfo widgetInfo = (LauncherAppWidgetInfo) d.dragInfo; 3051 3052 if (widgetInfo.spanX == -1) { 3053 // Calculate the grid spans needed to fit this widget 3054 int[] spans = layout.rectToCell( 3055 widgetInfo.minWidth, widgetInfo.minHeight, null); 3056 item.spanX = spans[0]; 3057 item.spanY = spans[1]; 3058 } 3059 } 3060 3061 if (mDragTargetLayout != null) { 3062 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 3063 // We want the point to be mapped to the dragTarget. 3064 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 3065 ItemInfo info = (ItemInfo) d.dragInfo; 3066 3067 boolean willCreateUserFolder = willCreateUserFolder(info, mDragTargetLayout, 3068 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1]); 3069 3070 View newDropOver = null; 3071 if (willCreateUserFolder) { 3072 newDropOver = mDragTargetLayout.getChildAt(mTargetCell[0], mTargetCell[1]); 3073 } 3074 3075 if (newDropOver != mLastDragOverView || !willCreateUserFolder) { 3076 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 3077 mDragFolderRingAnimator.animateToNaturalState(); 3078 } 3079 mCreateUserFolderOnDrop = false; 3080 mFolderCreationAlarm.cancelAlarm(); 3081 mIsDraggingOverIcon = false; 3082 } 3083 3084 if (willCreateUserFolder && !mIsDraggingOverIcon) { 3085 mIsDraggingOverIcon = true; 3086 3087 mLastDragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], mTargetCell[1]); 3088 mFolderCreationAlarm.setOnAlarmListener(new FolderCreationAlarmListener(mLastDragOverView)); 3089 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 3090 3091 mDragTargetLayout.clearDragOutlines(); 3092 } 3093 3094 if (!mCreateUserFolderOnDrop) { 3095 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 3096 (int) mDragViewVisualCenter[0], 3097 (int) mDragViewVisualCenter[1], 3098 item.spanX, item.spanY); 3099 } 3100 } 3101 } 3102 } 3103 } 3104 3105 class FolderCreationAlarmListener implements OnAlarmListener { 3106 View v; 3107 3108 public FolderCreationAlarmListener(View v) { 3109 this.v = v; 3110 } 3111 3112 public void onAlarm(Alarm alarm) { 3113 int tvLocation[] = new int[2]; 3114 int wsLocation[] = new int[2]; 3115 v.getLocationOnScreen(tvLocation); 3116 getLocationOnScreen(wsLocation); 3117 3118 if (mCellWidth < 0 || mCellHeight < 0) { 3119 mCellWidth = mDragTargetLayout.getCellWidth(); 3120 mCellHeight = mDragTargetLayout.getCellHeight(); 3121 } 3122 int x = tvLocation[0] - wsLocation[0] + mCellWidth / 2; 3123 int y = tvLocation[1] - wsLocation[1] + mCellHeight / 2; 3124 3125 if (mDragFolderRingAnimator == null) { 3126 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 3127 } 3128 mDragFolderRingAnimator.setLocation(x, y); 3129 mDragFolderRingAnimator.animateToAcceptState(); 3130 showFolderAccept(mDragFolderRingAnimator); 3131 mCreateUserFolderOnDrop = true; 3132 mDragTargetLayout.clearDragOutlines(); 3133 } 3134 } 3135 3136 private void doDragExit() { 3137 mWasSpringLoadedOnDragExit = mShrinkState == ShrinkState.SPRING_LOADED; 3138 3139 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 3140 mDragFolderRingAnimator.animateToNaturalState(); 3141 } 3142 mFolderCreationAlarm.cancelAlarm(); 3143 3144 if (mDragTargetLayout != null) { 3145 mDragTargetLayout.onDragExit(); 3146 } 3147 if (!mIsPageMoving) { 3148 hideOutlines(); 3149 } 3150 if (mShrinkState == ShrinkState.SPRING_LOADED) { 3151 mLauncher.exitSpringLoadedDragMode(); 3152 } 3153 clearAllHovers(); 3154 } 3155 3156 public void onDragExit(DragObject d) { 3157 doDragExit(); 3158 } 3159 3160 @Override 3161 public void getHitRect(Rect outRect) { 3162 // We want the workspace to have the whole area of the display (it will find the correct 3163 // cell layout to drop to in the existing drag/drop logic. 3164 final Display d = mLauncher.getWindowManager().getDefaultDisplay(); 3165 outRect.set(0, 0, d.getWidth(), d.getHeight()); 3166 } 3167 3168 /** 3169 * Add the item specified by dragInfo to the given layout. 3170 * @return true if successful 3171 */ 3172 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 3173 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 3174 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 3175 return true; 3176 } 3177 mLauncher.showOutOfSpaceMessage(); 3178 return false; 3179 } 3180 3181 private void onDropExternal(int[] touchXY, Object dragInfo, 3182 CellLayout cellLayout, boolean insertAtFirst) { 3183 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 3184 } 3185 3186 /** 3187 * Drop an item that didn't originate on one of the workspace screens. 3188 * It may have come from Launcher (e.g. from all apps or customize), or it may have 3189 * come from another app altogether. 3190 * 3191 * NOTE: This can also be called when we are outside of a drag event, when we want 3192 * to add an item to one of the workspace screens. 3193 */ 3194 private void onDropExternal(int[] touchXY, Object dragInfo, 3195 CellLayout cellLayout, boolean insertAtFirst, DragView dragView) { 3196 int screen = indexOfChild(cellLayout); 3197 if (dragInfo instanceof PendingAddItemInfo) { 3198 PendingAddItemInfo info = (PendingAddItemInfo) dragInfo; 3199 // When dragging and dropping from customization tray, we deal with creating 3200 // widgets/shortcuts/folders in a slightly different way 3201 switch (info.itemType) { 3202 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 3203 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) info, screen, touchXY); 3204 break; 3205 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3206 mLauncher.processShortcutFromDrop(info.componentName, screen, touchXY); 3207 break; 3208 default: 3209 throw new IllegalStateException("Unknown item type: " + info.itemType); 3210 } 3211 cellLayout.onDragExit(); 3212 } else { 3213 // This is for other drag/drop cases, like dragging from All Apps 3214 ItemInfo info = (ItemInfo) dragInfo; 3215 View view = null; 3216 3217 switch (info.itemType) { 3218 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 3219 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 3220 if (info.container == NO_ID && info instanceof ApplicationInfo) { 3221 // Came from all apps -- make a copy 3222 info = new ShortcutInfo((ApplicationInfo) info); 3223 } 3224 view = mLauncher.createShortcut(R.layout.application, cellLayout, 3225 (ShortcutInfo) info); 3226 break; 3227 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 3228 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, 3229 cellLayout, (FolderInfo) info, mIconCache); 3230 break; 3231 default: 3232 throw new IllegalStateException("Unknown item type: " + info.itemType); 3233 } 3234 3235 // If the item being dropped is a shortcut and the nearest drop cell also contains 3236 // a shortcut, then create a folder with the two shortcuts. 3237 if (touchXY != null && createUserFolderIfNecessary(view, cellLayout, touchXY[0], 3238 touchXY[1], true)) { 3239 return; 3240 } 3241 3242 mTargetCell = new int[2]; 3243 if (touchXY != null) { 3244 // when dragging and dropping, just find the closest free spot 3245 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], 1, 1, null, cellLayout, 3246 mTargetCell); 3247 } else { 3248 cellLayout.findCellForSpan(mTargetCell, 1, 1); 3249 } 3250 addInScreen(view, indexOfChild(cellLayout), mTargetCell[0], 3251 mTargetCell[1], info.spanX, info.spanY, insertAtFirst); 3252 boolean animateDrop = !mWasSpringLoadedOnDragExit; 3253 cellLayout.onDropChild(view, animateDrop); 3254 cellLayout.animateDrop(); 3255 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 3256 cellLayout.getChildrenLayout().measureChild(view); 3257 3258 if (dragView != null) { 3259 // we have the visual center of the drag view, we need to find the actual 3260 // left and top of the dragView. 3261 int loc[] = new int[2]; 3262 getViewLocationRelativeToSelf(dragView, loc); 3263 setPositionForDropAnimation(dragView, loc[0], loc[1], cellLayout, view); 3264 } 3265 3266 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 3267 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 3268 lp.cellX, lp.cellY); 3269 } 3270 } 3271 3272 /** 3273 * Return the current {@link CellLayout}, correctly picking the destination 3274 * screen while a scroll is in progress. 3275 */ 3276 public CellLayout getCurrentDropLayout() { 3277 return (CellLayout) getChildAt(mNextPage == INVALID_PAGE ? mCurrentPage : mNextPage); 3278 } 3279 3280 /** 3281 * Return the current CellInfo describing our current drag; this method exists 3282 * so that Launcher can sync this object with the correct info when the activity is created/ 3283 * destroyed 3284 * 3285 */ 3286 public CellLayout.CellInfo getDragInfo() { 3287 return mDragInfo; 3288 } 3289 3290 /** 3291 * Calculate the nearest cell where the given object would be dropped. 3292 * 3293 * pixelX and pixelY should be in the coordinate system of layout 3294 */ 3295 private int[] findNearestVacantArea(int pixelX, int pixelY, 3296 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 3297 return layout.findNearestVacantArea( 3298 pixelX, pixelY, spanX, spanY, ignoreView, recycle); 3299 } 3300 3301 /** 3302 * Calculate the nearest cell where the given object would be dropped. 3303 * 3304 * pixelX and pixelY should be in the coordinate system of layout 3305 */ 3306 private int[] findNearestArea(int pixelX, int pixelY, 3307 int spanX, int spanY, CellLayout layout, int[] recycle) { 3308 return layout.findNearestArea( 3309 pixelX, pixelY, spanX, spanY, recycle); 3310 } 3311 3312 void setLauncher(Launcher launcher) { 3313 mLauncher = launcher; 3314 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 3315 3316 mCustomizationDrawer = mLauncher.findViewById(R.id.customization_drawer); 3317 if (mCustomizationDrawer != null) { 3318 mCustomizationDrawerContent = 3319 mCustomizationDrawer.findViewById(com.android.internal.R.id.tabcontent); 3320 } 3321 } 3322 3323 public void setDragController(DragController dragController) { 3324 mDragController = dragController; 3325 } 3326 3327 /** 3328 * Called at the end of a drag which originated on the workspace. 3329 */ 3330 public void onDropCompleted(View target, Object dragInfo, boolean success) { 3331 if (success) { 3332 if (target != this && mDragInfo != null) { 3333 final CellLayout cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3334 cellLayout.removeView(mDragInfo.cell); 3335 if (mDragInfo.cell instanceof DropTarget) { 3336 mDragController.removeDropTarget((DropTarget)mDragInfo.cell); 3337 } 3338 // final Object tag = mDragInfo.cell.getTag(); 3339 } 3340 } else if (mDragInfo != null) { 3341 // NOTE: When 'success' is true, onDragExit is called by the DragController before 3342 // calling onDropCompleted(). We call it ourselves here, but maybe this should be 3343 // moved into DragController.cancelDrag(). 3344 doDragExit(); 3345 ((CellLayout) getChildAt(mDragInfo.screen)).onDropChild(mDragInfo.cell, false); 3346 } 3347 mLauncher.unlockScreenOrientation(); 3348 mDragOutline = null; 3349 mDragInfo = null; 3350 } 3351 3352 @Override 3353 public void onDragViewVisible() { 3354 ((View) mDragInfo.cell).setVisibility(View.GONE); 3355 } 3356 3357 public boolean isDropEnabled() { 3358 return true; 3359 } 3360 3361 @Override 3362 protected void onRestoreInstanceState(Parcelable state) { 3363 super.onRestoreInstanceState(state); 3364 Launcher.setScreen(mCurrentPage); 3365 } 3366 3367 @Override 3368 public void scrollLeft() { 3369 if (!mIsSmall && !mIsInUnshrinkAnimation) { 3370 super.scrollLeft(); 3371 } 3372 } 3373 3374 @Override 3375 public void scrollRight() { 3376 if (!mIsSmall && !mIsInUnshrinkAnimation) { 3377 super.scrollRight(); 3378 } 3379 } 3380 3381 @Override 3382 public void onEnterScrollArea(int direction) { 3383 if (!mIsSmall && !mIsInUnshrinkAnimation) { 3384 mInScrollArea = true; 3385 mPendingScrollDirection = direction; 3386 3387 final int page = mCurrentPage + (direction == DragController.SCROLL_LEFT ? -1 : 1); 3388 final CellLayout layout = (CellLayout) getChildAt(page); 3389 3390 if (layout != null) { 3391 layout.setIsDragOverlapping(true); 3392 3393 if (mDragTargetLayout != null) { 3394 mDragTargetLayout.onDragExit(); 3395 mDragTargetLayout = null; 3396 } 3397 // In portrait, need to redraw the edge glow when entering the scroll area 3398 if (getHeight() > getWidth()) { 3399 invalidate(); 3400 } 3401 } 3402 } 3403 } 3404 3405 private void clearAllHovers() { 3406 final int childCount = getChildCount(); 3407 for (int i = 0; i < childCount; i++) { 3408 ((CellLayout) getChildAt(i)).setIsDragOverlapping(false); 3409 } 3410 mSpringLoadedDragController.onDragExit(); 3411 3412 // In portrait, workspace is responsible for drawing the edge glow on adjacent pages, 3413 // so we need to redraw the workspace when this may have changed. 3414 if (getHeight() > getWidth()) { 3415 invalidate(); 3416 } 3417 } 3418 3419 @Override 3420 public void onExitScrollArea() { 3421 if (mInScrollArea) { 3422 mInScrollArea = false; 3423 mPendingScrollDirection = DragController.SCROLL_NONE; 3424 clearAllHovers(); 3425 } 3426 } 3427 3428 public Folder getFolderForTag(Object tag) { 3429 final int screenCount = getChildCount(); 3430 for (int screen = 0; screen < screenCount; screen++) { 3431 ViewGroup currentScreen = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 3432 int count = currentScreen.getChildCount(); 3433 for (int i = 0; i < count; i++) { 3434 View child = currentScreen.getChildAt(i); 3435 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 3436 if (lp.cellHSpan == 4 && lp.cellVSpan == 4 && child instanceof Folder) { 3437 Folder f = (Folder) child; 3438 if (f.getInfo() == tag && f.getInfo().opened) { 3439 return f; 3440 } 3441 } 3442 } 3443 } 3444 return null; 3445 } 3446 3447 public View getViewForTag(Object tag) { 3448 int screenCount = getChildCount(); 3449 for (int screen = 0; screen < screenCount; screen++) { 3450 ViewGroup currentScreen = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 3451 int count = currentScreen.getChildCount(); 3452 for (int i = 0; i < count; i++) { 3453 View child = currentScreen.getChildAt(i); 3454 if (child.getTag() == tag) { 3455 return child; 3456 } 3457 } 3458 } 3459 return null; 3460 } 3461 3462 void clearDropTargets() { 3463 final int screenCount = getChildCount(); 3464 3465 for (int i = 0; i < screenCount; i++) { 3466 final CellLayout layoutParent = (CellLayout) getChildAt(i); 3467 final ViewGroup layout = layoutParent.getChildrenLayout(); 3468 int childCount = layout.getChildCount(); 3469 for (int j = 0; j < childCount; j++) { 3470 View v = layout.getChildAt(j); 3471 if (v instanceof DropTarget) { 3472 mDragController.removeDropTarget((DropTarget) v); 3473 } 3474 } 3475 } 3476 } 3477 3478 void removeItems(final ArrayList<ApplicationInfo> apps) { 3479 final int screenCount = getChildCount(); 3480 final PackageManager manager = getContext().getPackageManager(); 3481 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3482 3483 final HashSet<String> packageNames = new HashSet<String>(); 3484 final int appCount = apps.size(); 3485 for (int i = 0; i < appCount; i++) { 3486 packageNames.add(apps.get(i).componentName.getPackageName()); 3487 } 3488 3489 for (int i = 0; i < screenCount; i++) { 3490 final CellLayout layoutParent = (CellLayout) getChildAt(i); 3491 final ViewGroup layout = layoutParent.getChildrenLayout(); 3492 3493 // Avoid ANRs by treating each screen separately 3494 post(new Runnable() { 3495 public void run() { 3496 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3497 childrenToRemove.clear(); 3498 3499 int childCount = layout.getChildCount(); 3500 for (int j = 0; j < childCount; j++) { 3501 final View view = layout.getChildAt(j); 3502 Object tag = view.getTag(); 3503 3504 if (tag instanceof ShortcutInfo) { 3505 final ShortcutInfo info = (ShortcutInfo) tag; 3506 final Intent intent = info.intent; 3507 final ComponentName name = intent.getComponent(); 3508 3509 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3510 for (String packageName: packageNames) { 3511 if (packageName.equals(name.getPackageName())) { 3512 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3513 childrenToRemove.add(view); 3514 } 3515 } 3516 } 3517 } else if (tag instanceof FolderInfo) { 3518 final FolderInfo info = (FolderInfo) tag; 3519 final ArrayList<ShortcutInfo> contents = info.contents; 3520 final ArrayList<ShortcutInfo> toRemove = new ArrayList<ShortcutInfo>(1); 3521 final int contentsCount = contents.size(); 3522 boolean removedFromFolder = false; 3523 3524 for (int k = 0; k < contentsCount; k++) { 3525 final ShortcutInfo appInfo = contents.get(k); 3526 final Intent intent = appInfo.intent; 3527 final ComponentName name = intent.getComponent(); 3528 3529 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3530 for (String packageName: packageNames) { 3531 if (packageName.equals(name.getPackageName())) { 3532 toRemove.add(appInfo); 3533 LauncherModel.deleteItemFromDatabase(mLauncher, appInfo); 3534 removedFromFolder = true; 3535 } 3536 } 3537 } 3538 } 3539 3540 contents.removeAll(toRemove); 3541 if (removedFromFolder) { 3542 final Folder folder = getOpenFolder(); 3543 if (folder != null) 3544 folder.notifyDataSetChanged(); 3545 } 3546 } else if (tag instanceof LauncherAppWidgetInfo) { 3547 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3548 final AppWidgetProviderInfo provider = 3549 widgets.getAppWidgetInfo(info.appWidgetId); 3550 if (provider != null) { 3551 for (String packageName: packageNames) { 3552 if (packageName.equals(provider.provider.getPackageName())) { 3553 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3554 childrenToRemove.add(view); 3555 } 3556 } 3557 } 3558 } 3559 } 3560 3561 childCount = childrenToRemove.size(); 3562 for (int j = 0; j < childCount; j++) { 3563 View child = childrenToRemove.get(j); 3564 // Note: We can not remove the view directly from CellLayoutChildren as this 3565 // does not re-mark the spaces as unoccupied. 3566 layoutParent.removeViewInLayout(child); 3567 if (child instanceof DropTarget) { 3568 mDragController.removeDropTarget((DropTarget)child); 3569 } 3570 } 3571 3572 if (childCount > 0) { 3573 layout.requestLayout(); 3574 layout.invalidate(); 3575 } 3576 } 3577 }); 3578 } 3579 } 3580 3581 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3582 final int screenCount = getChildCount(); 3583 for (int i = 0; i < screenCount; i++) { 3584 final ViewGroup layout = ((CellLayout) getChildAt(i)).getChildrenLayout(); 3585 int childCount = layout.getChildCount(); 3586 for (int j = 0; j < childCount; j++) { 3587 final View view = layout.getChildAt(j); 3588 Object tag = view.getTag(); 3589 if (tag instanceof ShortcutInfo) { 3590 ShortcutInfo info = (ShortcutInfo)tag; 3591 // We need to check for ACTION_MAIN otherwise getComponent() might 3592 // return null for some shortcuts (for instance, for shortcuts to 3593 // web pages.) 3594 final Intent intent = info.intent; 3595 final ComponentName name = intent.getComponent(); 3596 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3597 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3598 final int appCount = apps.size(); 3599 for (int k = 0; k < appCount; k++) { 3600 ApplicationInfo app = apps.get(k); 3601 if (app.componentName.equals(name)) { 3602 info.setIcon(mIconCache.getIcon(info.intent)); 3603 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 3604 new FastBitmapDrawable(info.getIcon(mIconCache)), 3605 null, null); 3606 } 3607 } 3608 } 3609 } 3610 } 3611 } 3612 } 3613 3614 void moveToDefaultScreen(boolean animate) { 3615 if (mIsSmall || mIsInUnshrinkAnimation) { 3616 mLauncher.showWorkspace(animate, (CellLayout)getChildAt(mDefaultPage)); 3617 } else if (animate) { 3618 snapToPage(mDefaultPage); 3619 } else { 3620 setCurrentPage(mDefaultPage); 3621 } 3622 getChildAt(mDefaultPage).requestFocus(); 3623 } 3624 3625 void setIndicators(Drawable previous, Drawable next) { 3626 mPreviousIndicator = previous; 3627 mNextIndicator = next; 3628 previous.setLevel(mCurrentPage); 3629 next.setLevel(mCurrentPage); 3630 } 3631 3632 @Override 3633 public void syncPages() { 3634 } 3635 3636 @Override 3637 public void syncPageItems(int page) { 3638 } 3639 3640} 3641