Workspace.java revision a7f801fc5b5715223e868ed599da69c5edf436ee
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.launcher2; 18 19import com.android.launcher.R; 20import com.android.launcher2.InstallWidgetReceiver.WidgetMimeTypeHandlerData; 21 22import android.animation.Animator; 23import android.animation.AnimatorListenerAdapter; 24import android.animation.AnimatorSet; 25import android.animation.ObjectAnimator; 26import android.animation.PropertyValuesHolder; 27import android.animation.TimeInterpolator; 28import android.animation.ValueAnimator; 29import android.animation.Animator.AnimatorListener; 30import android.animation.ValueAnimator.AnimatorUpdateListener; 31import android.app.AlertDialog; 32import android.app.WallpaperManager; 33import android.appwidget.AppWidgetManager; 34import android.appwidget.AppWidgetProviderInfo; 35import android.content.ClipData; 36import android.content.ClipDescription; 37import android.content.ComponentName; 38import android.content.Context; 39import android.content.Intent; 40import android.content.pm.PackageManager; 41import android.content.pm.ProviderInfo; 42import android.content.res.Resources; 43import android.content.res.TypedArray; 44import android.graphics.Bitmap; 45import android.graphics.Camera; 46import android.graphics.Canvas; 47import android.graphics.Matrix; 48import android.graphics.Paint; 49import android.graphics.Rect; 50import android.graphics.RectF; 51import android.graphics.Region.Op; 52import android.graphics.drawable.Drawable; 53import android.net.Uri; 54import android.os.IBinder; 55import android.os.Parcelable; 56import android.util.AttributeSet; 57import android.util.Log; 58import android.util.Pair; 59import android.view.Display; 60import android.view.DragEvent; 61import android.view.MotionEvent; 62import android.view.View; 63import android.view.ViewGroup; 64import android.view.animation.DecelerateInterpolator; 65import android.widget.TextView; 66import android.widget.Toast; 67 68import java.util.ArrayList; 69import java.util.HashSet; 70import java.util.List; 71 72/** 73 * The workspace is a wide area with a wallpaper and a finite number of pages. 74 * Each page contains a number of icons, folders or widgets the user can 75 * interact with. A workspace is meant to be used with a fixed width only. 76 */ 77public class Workspace extends SmoothPagedView 78 implements DropTarget, DragSource, DragScroller, View.OnTouchListener { 79 @SuppressWarnings({"UnusedDeclaration"}) 80 private static final String TAG = "Launcher.Workspace"; 81 82 // This is how much the workspace shrinks when we enter all apps or 83 // customization mode 84 private static final float SHRINK_FACTOR = 0.16f; 85 86 // How much the screens shrink when we enter spring loaded drag mode 87 private static final float SPRING_LOADED_DRAG_SHRINK_FACTOR = 0.7f; 88 89 // Y rotation to apply to the workspace screens 90 private static final float WORKSPACE_ROTATION = 12.5f; 91 92 // These are extra scale factors to apply to the mini home screens 93 // so as to achieve the desired transform 94 private static final float EXTRA_SCALE_FACTOR_0 = 0.972f; 95 private static final float EXTRA_SCALE_FACTOR_1 = 1.0f; 96 private static final float EXTRA_SCALE_FACTOR_2 = 1.10f; 97 98 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 99 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 100 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 101 102 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 103 private static final int BACKGROUND_FADE_IN_DURATION = 350; 104 105 // These animators are used to fade the children's outlines 106 private ObjectAnimator mChildrenOutlineFadeInAnimation; 107 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 108 private float mChildrenOutlineAlpha = 0; 109 110 // These properties refer to the background protection gradient used for AllApps and Customize 111 private ObjectAnimator mBackgroundFadeInAnimation; 112 private ObjectAnimator mBackgroundFadeOutAnimation; 113 private Drawable mBackground; 114 private Drawable mCustomizeTrayBackground; 115 private boolean mDrawCustomizeTrayBackground; 116 private float mBackgroundAlpha = 0; 117 private float mOverScrollMaxBackgroundAlpha = 0.0f; 118 private int mOverScrollPageIndex = -1; 119 120 private View mCustomizationDrawer; 121 private View mCustomizationDrawerContent; 122 private int[] mCustomizationDrawerPos = new int[2]; 123 private float[] mCustomizationDrawerTransformedPos = new float[2]; 124 125 private final WallpaperManager mWallpaperManager; 126 127 private int mDefaultPage; 128 129 private boolean mIsDragInProcess = false; 130 131 /** 132 * CellInfo for the cell that is currently being dragged 133 */ 134 private CellLayout.CellInfo mDragInfo; 135 136 /** 137 * Target drop area calculated during last acceptDrop call. 138 */ 139 private int[] mTargetCell = null; 140 141 /** 142 * The CellLayout that is currently being dragged over 143 */ 144 private CellLayout mDragTargetLayout = null; 145 146 private Launcher mLauncher; 147 private IconCache mIconCache; 148 private DragController mDragController; 149 150 // These are temporary variables to prevent having to allocate a new object just to 151 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 152 private int[] mTempCell = new int[2]; 153 private int[] mTempEstimate = new int[2]; 154 private float[] mTempOriginXY = new float[2]; 155 private float[] mTempDragCoordinates = new float[2]; 156 private float[] mTempTouchCoordinates = new float[2]; 157 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 158 private float[] mTempDragBottomRightCoordinates = new float[2]; 159 private Matrix mTempInverseMatrix = new Matrix(); 160 161 private SpringLoadedDragController mSpringLoadedDragController; 162 163 private static final int DEFAULT_CELL_COUNT_X = 4; 164 private static final int DEFAULT_CELL_COUNT_Y = 4; 165 166 private Drawable mPreviousIndicator; 167 private Drawable mNextIndicator; 168 169 // State variable that indicates whether the pages are small (ie when you're 170 // in all apps or customize mode) 171 private boolean mIsSmall = false; 172 private boolean mIsInUnshrinkAnimation = false; 173 private AnimatorListener mShrinkAnimationListener; 174 private AnimatorListener mUnshrinkAnimationListener; 175 enum ShrinkState { TOP, SPRING_LOADED, MIDDLE, BOTTOM_HIDDEN, BOTTOM_VISIBLE }; 176 private ShrinkState mShrinkState; 177 private boolean mWasSpringLoadedOnDragExit = false; 178 private boolean mWaitingToShrink = false; 179 private ShrinkState mWaitingToShrinkState; 180 private AnimatorSet mAnimator; 181 182 /** Is the user is dragging an item near the edge of a page? */ 183 private boolean mInScrollArea = false; 184 185 /** If mInScrollArea is true, the direction of the scroll. */ 186 private int mPendingScrollDirection = DragController.SCROLL_NONE; 187 188 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 189 private Bitmap mDragOutline = null; 190 private final Rect mTempRect = new Rect(); 191 private final int[] mTempXY = new int[2]; 192 193 private ValueAnimator mDropAnim = null; 194 private TimeInterpolator mQuintEaseOutInterpolator = new DecelerateInterpolator(2.5f); 195 private View mDropView = null; 196 private int[] mDropViewPos = new int[] { -1, -1 }; 197 198 // Paint used to draw external drop outline 199 private final Paint mExternalDragOutlinePaint = new Paint(); 200 201 // Camera and Matrix used to determine the final position of a neighboring CellLayout 202 private final Matrix mMatrix = new Matrix(); 203 private final Camera mCamera = new Camera(); 204 private final float mTempFloat2[] = new float[2]; 205 206 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 207 int mWallpaperWidth; 208 int mWallpaperHeight; 209 WallpaperOffsetInterpolator mWallpaperOffset; 210 boolean mUpdateWallpaperOffsetImmediately = false; 211 boolean mSyncWallpaperOffsetWithScroll = true; 212 213 // info about the last drag 214 private DragView mLastDragView; 215 private int mLastDragOriginX; 216 private int mLastDragOriginY; 217 private int mLastDragXOffset; 218 private int mLastDragYOffset; 219 220 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 221 private float mXDown; 222 private float mYDown; 223 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 224 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 225 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 226 227 /** 228 * Used to inflate the Workspace from XML. 229 * 230 * @param context The application's context. 231 * @param attrs The attributes set containing the Workspace's customization values. 232 */ 233 public Workspace(Context context, AttributeSet attrs) { 234 this(context, attrs, 0); 235 } 236 237 /** 238 * Used to inflate the Workspace from XML. 239 * 240 * @param context The application's context. 241 * @param attrs The attributes set containing the Workspace's customization values. 242 * @param defStyle Unused. 243 */ 244 public Workspace(Context context, AttributeSet attrs, int defStyle) { 245 super(context, attrs, defStyle); 246 mContentIsRefreshable = false; 247 248 if (!LauncherApplication.isScreenXLarge()) { 249 mFadeInAdjacentScreens = false; 250 } 251 252 mWallpaperManager = WallpaperManager.getInstance(context); 253 254 TypedArray a = context.obtainStyledAttributes(attrs, 255 R.styleable.Workspace, defStyle, 0); 256 int cellCountX = a.getInt(R.styleable.Workspace_cellCountX, DEFAULT_CELL_COUNT_X); 257 int cellCountY = a.getInt(R.styleable.Workspace_cellCountY, DEFAULT_CELL_COUNT_Y); 258 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 259 a.recycle(); 260 261 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 262 setHapticFeedbackEnabled(false); 263 264 initWorkspace(); 265 } 266 267 /** 268 * Initializes various states for this workspace. 269 */ 270 protected void initWorkspace() { 271 Context context = getContext(); 272 mCurrentPage = mDefaultPage; 273 Launcher.setScreen(mCurrentPage); 274 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 275 mIconCache = app.getIconCache(); 276 mExternalDragOutlinePaint.setAntiAlias(true); 277 setWillNotDraw(false); 278 279 try { 280 final Resources res = getResources(); 281 mBackground = res.getDrawable(R.drawable.all_apps_bg_gradient); 282 mCustomizeTrayBackground = res.getDrawable(R.drawable.customize_bg_gradient); 283 } catch (Resources.NotFoundException e) { 284 // In this case, we will skip drawing background protection 285 } 286 287 mUnshrinkAnimationListener = new AnimatorListenerAdapter() { 288 @Override 289 public void onAnimationStart(Animator animation) { 290 mIsInUnshrinkAnimation = true; 291 } 292 293 @Override 294 public void onAnimationEnd(Animator animation) { 295 mIsInUnshrinkAnimation = false; 296 mSyncWallpaperOffsetWithScroll = true; 297 if (mShrinkState == ShrinkState.SPRING_LOADED) { 298 View layout = null; 299 if (mLastDragView != null) { 300 layout = findMatchingPageForDragOver(mLastDragView, mLastDragOriginX, 301 mLastDragOriginY, mLastDragXOffset, mLastDragYOffset); 302 } 303 mSpringLoadedDragController.onEnterSpringLoadedMode(layout == null); 304 } else { 305 mDrawCustomizeTrayBackground = false; 306 } 307 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 308 mAnimator = null; 309 enableChildrenLayers(false); 310 } 311 }; 312 mShrinkAnimationListener = new AnimatorListenerAdapter() { 313 @Override 314 public void onAnimationStart(Animator animation) { 315 enableChildrenLayers(true); 316 } 317 @Override 318 public void onAnimationEnd(Animator animation) { 319 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 320 mAnimator = null; 321 } 322 }; 323 mSnapVelocity = 600; 324 mWallpaperOffset = new WallpaperOffsetInterpolator(); 325 } 326 327 @Override 328 protected int getScrollMode() { 329 if (LauncherApplication.isScreenXLarge()) { 330 return SmoothPagedView.X_LARGE_MODE; 331 } else { 332 return SmoothPagedView.DEFAULT_MODE; 333 } 334 } 335 336 @Override 337 public void addView(View child, int index, LayoutParams params) { 338 if (!(child instanceof CellLayout)) { 339 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 340 } 341 ((CellLayout) child).setOnInterceptTouchListener(this); 342 super.addView(child, index, params); 343 } 344 345 @Override 346 public void addView(View child) { 347 if (!(child instanceof CellLayout)) { 348 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 349 } 350 ((CellLayout) child).setOnInterceptTouchListener(this); 351 super.addView(child); 352 } 353 354 @Override 355 public void addView(View child, int index) { 356 if (!(child instanceof CellLayout)) { 357 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 358 } 359 ((CellLayout) child).setOnInterceptTouchListener(this); 360 super.addView(child, index); 361 } 362 363 @Override 364 public void addView(View child, int width, int height) { 365 if (!(child instanceof CellLayout)) { 366 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 367 } 368 ((CellLayout) child).setOnInterceptTouchListener(this); 369 super.addView(child, width, height); 370 } 371 372 @Override 373 public void addView(View child, LayoutParams params) { 374 if (!(child instanceof CellLayout)) { 375 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 376 } 377 ((CellLayout) child).setOnInterceptTouchListener(this); 378 super.addView(child, params); 379 } 380 381 /** 382 * @return The open folder on the current screen, or null if there is none 383 */ 384 Folder getOpenFolder() { 385 ViewGroup currentPage = ((CellLayout) getChildAt(mCurrentPage)).getChildrenLayout(); 386 int count = currentPage.getChildCount(); 387 for (int i = 0; i < count; i++) { 388 View child = currentPage.getChildAt(i); 389 if (child instanceof Folder) { 390 Folder folder = (Folder) child; 391 if (folder.getInfo().opened) 392 return folder; 393 } 394 } 395 return null; 396 } 397 398 ArrayList<Folder> getOpenFolders() { 399 final int screenCount = getChildCount(); 400 ArrayList<Folder> folders = new ArrayList<Folder>(screenCount); 401 402 for (int screen = 0; screen < screenCount; screen++) { 403 ViewGroup currentPage = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 404 int count = currentPage.getChildCount(); 405 for (int i = 0; i < count; i++) { 406 View child = currentPage.getChildAt(i); 407 if (child instanceof Folder) { 408 Folder folder = (Folder) child; 409 if (folder.getInfo().opened) 410 folders.add(folder); 411 break; 412 } 413 } 414 } 415 return folders; 416 } 417 418 boolean isDefaultPageShowing() { 419 return mCurrentPage == mDefaultPage; 420 } 421 422 /** 423 * Adds the specified child in the specified screen. The position and dimension of 424 * the child are defined by x, y, spanX and spanY. 425 * 426 * @param child The child to add in one of the workspace's screens. 427 * @param screen The screen in which to add the child. 428 * @param x The X position of the child in the screen's grid. 429 * @param y The Y position of the child in the screen's grid. 430 * @param spanX The number of cells spanned horizontally by the child. 431 * @param spanY The number of cells spanned vertically by the child. 432 */ 433 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY) { 434 addInScreen(child, screen, x, y, spanX, spanY, false); 435 } 436 437 void addInFullScreen(View child, int screen) { 438 addInScreen(child, screen, 0, 0, -1, -1); 439 } 440 441 /** 442 * Adds the specified child in the specified screen. The position and dimension of 443 * the child are defined by x, y, spanX and spanY. 444 * 445 * @param child The child to add in one of the workspace's screens. 446 * @param screen The screen in which to add the child. 447 * @param x The X position of the child in the screen's grid. 448 * @param y The Y position of the child in the screen's grid. 449 * @param spanX The number of cells spanned horizontally by the child. 450 * @param spanY The number of cells spanned vertically by the child. 451 * @param insert When true, the child is inserted at the beginning of the children list. 452 */ 453 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY, boolean insert) { 454 if (screen < 0 || screen >= getChildCount()) { 455 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 456 + " (was " + screen + "); skipping child"); 457 return; 458 } 459 460 final CellLayout group = (CellLayout) getChildAt(screen); 461 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 462 if (lp == null) { 463 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 464 } else { 465 lp.cellX = x; 466 lp.cellY = y; 467 lp.cellHSpan = spanX; 468 lp.cellVSpan = spanY; 469 } 470 471 // Get the canonical child id to uniquely represent this view in this screen 472 int childId = LauncherModel.getCellLayoutChildId(-1, screen, x, y, spanX, spanY); 473 boolean markCellsAsOccupied = !(child instanceof Folder); 474 if (!group.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 475 // TODO: This branch occurs when the workspace is adding views 476 // outside of the defined grid 477 // maybe we should be deleting these items from the LauncherModel? 478 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 479 } 480 481 if (!(child instanceof Folder)) { 482 child.setHapticFeedbackEnabled(false); 483 child.setOnLongClickListener(mLongClickListener); 484 } 485 if (child instanceof DropTarget) { 486 mDragController.addDropTarget((DropTarget) child); 487 } 488 } 489 490 /** 491 * Check if the point (x, y) hits a given page. 492 */ 493 private boolean hitsPage(int index, float x, float y) { 494 final View page = getChildAt(index); 495 if (page != null) { 496 float[] localXY = { x, y }; 497 mapPointFromSelfToChild(page, localXY); 498 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 499 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 500 } 501 return false; 502 } 503 504 @Override 505 protected boolean hitsPreviousPage(float x, float y) { 506 // mNextPage is set to INVALID_PAGE whenever we are stationary. 507 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 508 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 509 return hitsPage(current - 1, x, y); 510 } 511 512 @Override 513 protected boolean hitsNextPage(float x, float y) { 514 // mNextPage is set to INVALID_PAGE whenever we are stationary. 515 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 516 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 517 return hitsPage(current + 1, x, y); 518 } 519 520 public boolean onTouch(View v, MotionEvent event) { 521 // this is an intercepted event being forwarded from a cell layout 522 if (mIsSmall || mIsInUnshrinkAnimation) { 523 // Only allow clicks on a CellLayout if it is visible 524 if (mShrinkState != ShrinkState.BOTTOM_HIDDEN) { 525 mLauncher.onWorkspaceClick((CellLayout) v); 526 } 527 return true; 528 } 529 return false; 530 } 531 532 protected void onWindowVisibilityChanged (int visibility) { 533 mLauncher.onWindowVisibilityChanged(visibility); 534 } 535 536 @Override 537 public boolean dispatchUnhandledMove(View focused, int direction) { 538 if (mIsSmall || mIsInUnshrinkAnimation) { 539 // when the home screens are shrunken, shouldn't allow side-scrolling 540 return false; 541 } 542 return super.dispatchUnhandledMove(focused, direction); 543 } 544 545 @Override 546 public boolean onInterceptTouchEvent(MotionEvent ev) { 547 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 548 mXDown = ev.getX(); 549 mYDown = ev.getY(); 550 } 551 552 if (mIsSmall || mIsInUnshrinkAnimation) { 553 if (mLauncher.isAllAppsVisible() && 554 mShrinkState == ShrinkState.BOTTOM_HIDDEN) { 555 // Intercept this event so we can show the workspace in full view 556 // when it is clicked on and it is small 557 AllAppsPagedView allApps = (AllAppsPagedView) 558 mLauncher.findViewById(R.id.all_apps_paged_view); 559 if (allApps != null) { 560 allApps.onInterceptTouchEvent(ev); 561 } 562 return true; 563 } 564 return false; 565 } 566 return super.onInterceptTouchEvent(ev); 567 } 568 569 @Override 570 protected void determineScrollingStart(MotionEvent ev) { 571 float deltaX = Math.abs(ev.getX() - mXDown); 572 float deltaY = Math.abs(ev.getY() - mYDown); 573 574 if (Float.compare(deltaX, 0f) == 0) return; 575 576 float slope = deltaY / deltaX; 577 float theta = (float) Math.atan(slope); 578 579 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 580 cancelCurrentPageLongPress(); 581 } 582 583 if (theta > MAX_SWIPE_ANGLE) { 584 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 585 return; 586 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 587 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to increase 588 // the touch slop to make it harder to begin scrolling the workspace. This results 589 // in vertically scrolling widgets to more easily. The higher the angle, the 590 // more we increase touch slop. 591 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 592 float extraRatio = (float) 593 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 594 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 595 } else { 596 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 597 super.determineScrollingStart(ev); 598 } 599 } 600 601 protected void onPageBeginMoving() { 602 if (mNextPage != INVALID_PAGE) { 603 // we're snapping to a particular screen 604 enableChildrenCache(mCurrentPage, mNextPage); 605 } else { 606 // this is when user is actively dragging a particular screen, they might 607 // swipe it either left or right (but we won't advance by more than one screen) 608 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 609 } 610 showOutlines(); 611 } 612 613 protected void onPageEndMoving() { 614 clearChildrenCache(); 615 // Hide the outlines, as long as we're not dragging 616 if (!mDragController.dragging()) { 617 hideOutlines(); 618 } 619 mOverScrollMaxBackgroundAlpha = 0.0f; 620 mOverScrollPageIndex = -1; 621 } 622 623 @Override 624 protected void notifyPageSwitchListener() { 625 super.notifyPageSwitchListener(); 626 627 if (mPreviousIndicator != null) { 628 // if we know the next page, we show the indication for it right away; it looks 629 // weird if the indicators are lagging 630 int page = mNextPage; 631 if (page == INVALID_PAGE) { 632 page = mCurrentPage; 633 } 634 mPreviousIndicator.setLevel(page); 635 mNextIndicator.setLevel(page); 636 } 637 Launcher.setScreen(mCurrentPage); 638 }; 639 640 // As a ratio of screen height, the total distance we want the parallax effect to span 641 // vertically 642 private float wallpaperTravelToScreenHeightRatio(int width, int height) { 643 return 1.1f; 644 } 645 646 // As a ratio of screen height, the total distance we want the parallax effect to span 647 // horizontally 648 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 649 float aspectRatio = width / (float) height; 650 651 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 652 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 653 // We will use these two data points to extrapolate how much the wallpaper parallax effect 654 // to span (ie travel) at any aspect ratio: 655 656 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 657 final float ASPECT_RATIO_PORTRAIT = 10/16f; 658 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 659 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 660 661 // To find out the desired width at different aspect ratios, we use the following two 662 // formulas, where the coefficient on x is the aspect ratio (width/height): 663 // (16/10)x + y = 1.5 664 // (10/16)x + y = 1.2 665 // We solve for x and y and end up with a final formula: 666 final float x = 667 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 668 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 669 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 670 return x * aspectRatio + y; 671 } 672 673 // The range of scroll values for Workspace 674 private int getScrollRange() { 675 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 676 } 677 678 protected void setWallpaperDimension() { 679 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 680 final int maxDim = Math.max(display.getWidth(), display.getHeight()); 681 final int minDim = Math.min(display.getWidth(), display.getHeight()); 682 683 // We need to ensure that there is enough extra space in the wallpaper for the intended 684 // parallax effects 685 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 686 mWallpaperHeight = (int)(maxDim * wallpaperTravelToScreenHeightRatio(maxDim, minDim)); 687 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 688 } 689 690 public void setVerticalWallpaperOffset(float offset) { 691 mWallpaperOffset.setFinalY(offset); 692 } 693 public float getVerticalWallpaperOffset() { 694 return mWallpaperOffset.getCurrY(); 695 } 696 public void setHorizontalWallpaperOffset(float offset) { 697 mWallpaperOffset.setFinalX(offset); 698 } 699 public float getHorizontalWallpaperOffset() { 700 return mWallpaperOffset.getCurrX(); 701 } 702 703 private float wallpaperOffsetForCurrentScroll() { 704 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 705 // The wallpaper travel width is how far, from left to right, the wallpaper will move 706 // at this orientation (for example, in portrait mode we don't move all the way to the 707 // edges of the wallpaper, or otherwise the parallax effect would be too strong) 708 int wallpaperTravelWidth = (int) (display.getWidth() * 709 wallpaperTravelToScreenWidthRatio(display.getWidth(), display.getHeight())); 710 711 // Set wallpaper offset steps (1 / (number of screens - 1)) 712 // We have 3 vertical offset states (centered, and then top/bottom aligned 713 // for all apps/customize) 714 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f / (3 - 1)); 715 716 int scrollRange = getScrollRange(); 717 float scrollProgressOffset = 0; 718 719 // Account for overscroll: you only see the absolute edge of the wallpaper if 720 // you overscroll as far as you can in landscape mode. Only do this for static wallpapers 721 // because live wallpapers (and probably 3rd party wallpaper providers) rely on the offset 722 // being even intervals from 0 to 1 (eg [0, 0.25, 0.5, 0.75, 1]) 723 final boolean isStaticWallpaper = (mWallpaperManager.getWallpaperInfo() == null); 724 if (isStaticWallpaper) { 725 int overscrollOffset = (int) (maxOverScroll() * display.getWidth()); 726 scrollProgressOffset += overscrollOffset / (float) getScrollRange(); 727 scrollRange += 2 * overscrollOffset; 728 } 729 730 float scrollProgress = 731 mScrollX / (float) scrollRange + scrollProgressOffset; 732 float offsetInDips = wallpaperTravelWidth * scrollProgress + 733 (mWallpaperWidth - wallpaperTravelWidth) / 2; 734 float offset = offsetInDips / (float) mWallpaperWidth; 735 return offset; 736 } 737 private void syncWallpaperOffsetWithScroll() { 738 if (LauncherApplication.isScreenXLarge()) { 739 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 740 } 741 } 742 743 public void updateWallpaperOffsetImmediately() { 744 mUpdateWallpaperOffsetImmediately = true; 745 } 746 747 private void updateWallpaperOffsets() { 748 boolean updateNow = false; 749 boolean keepUpdating = true; 750 if (mUpdateWallpaperOffsetImmediately) { 751 updateNow = true; 752 keepUpdating = false; 753 mWallpaperOffset.jumpToFinal(); 754 mUpdateWallpaperOffsetImmediately = false; 755 } else { 756 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 757 } 758 if (updateNow) { 759 IBinder token = getWindowToken(); 760 if (token != null) { 761 mWallpaperManager.setWallpaperOffsets(getWindowToken(), 762 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 763 } 764 } 765 if (keepUpdating) { 766 invalidate(); 767 } 768 } 769 770 class WallpaperOffsetInterpolator { 771 float mFinalHorizontalWallpaperOffset = 0.0f; 772 float mFinalVerticalWallpaperOffset = 0.5f; 773 float mHorizontalWallpaperOffset = 0.0f; 774 float mVerticalWallpaperOffset = 0.5f; 775 long mLastWallpaperOffsetUpdateTime; 776 boolean mIsMovingFast; 777 boolean mOverrideHorizontalCatchupConstant; 778 float mHorizontalCatchupConstant = 0.35f; 779 float mVerticalCatchupConstant = 0.35f; 780 781 public WallpaperOffsetInterpolator() { 782 } 783 784 public void setOverrideHorizontalCatchupConstant(boolean override) { 785 mOverrideHorizontalCatchupConstant = override; 786 } 787 788 public void setHorizontalCatchupConstant(float f) { 789 mHorizontalCatchupConstant = f; 790 } 791 792 public void setVerticalCatchupConstant(float f) { 793 mVerticalCatchupConstant = f; 794 } 795 796 public boolean computeScrollOffset() { 797 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 798 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 799 mIsMovingFast = false; 800 return false; 801 } 802 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 803 boolean isLandscape = display.getWidth() > display.getHeight(); 804 805 long currentTime = System.currentTimeMillis(); 806 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 807 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 808 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 809 810 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 811 if (!mIsMovingFast && xdiff > 0.07) { 812 mIsMovingFast = true; 813 } 814 815 float fractionToCatchUpIn1MsHorizontal; 816 if (mOverrideHorizontalCatchupConstant) { 817 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 818 } else if (mIsMovingFast) { 819 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 820 } else { 821 // slow 822 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 823 } 824 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 825 826 827 fractionToCatchUpIn1MsHorizontal /= 33f; 828 fractionToCatchUpIn1MsVertical /= 33f; 829 830 final float UPDATE_THRESHOLD = 0.00001f; 831 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 832 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 833 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 834 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 835 if (jumpToFinalValue) { 836 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 837 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 838 } else { 839 float percentToCatchUpVertical = 840 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 841 float percentToCatchUpHorizontal = 842 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 843 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 844 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 845 } 846 847 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 848 return true; 849 } 850 851 public float getCurrX() { 852 return mHorizontalWallpaperOffset; 853 } 854 855 public float getFinalX() { 856 return mFinalHorizontalWallpaperOffset; 857 } 858 859 public float getCurrY() { 860 return mVerticalWallpaperOffset; 861 } 862 863 public float getFinalY() { 864 return mFinalVerticalWallpaperOffset; 865 } 866 867 public void setFinalX(float x) { 868 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 869 } 870 871 public void setFinalY(float y) { 872 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 873 } 874 875 public void jumpToFinal() { 876 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 877 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 878 } 879 } 880 881 @Override 882 public void computeScroll() { 883 super.computeScroll(); 884 if (mSyncWallpaperOffsetWithScroll) { 885 syncWallpaperOffsetWithScroll(); 886 } 887 } 888 889 public void showOutlines() { 890 if (!mIsSmall && !mIsInUnshrinkAnimation) { 891 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 892 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 893 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 894 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 895 mChildrenOutlineFadeInAnimation.start(); 896 } 897 } 898 899 public void hideOutlines() { 900 if (!mIsSmall && !mIsInUnshrinkAnimation) { 901 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 902 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 903 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 904 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 905 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 906 mChildrenOutlineFadeOutAnimation.start(); 907 } 908 } 909 910 public void setChildrenOutlineAlpha(float alpha) { 911 mChildrenOutlineAlpha = alpha; 912 for (int i = 0; i < getChildCount(); i++) { 913 CellLayout cl = (CellLayout) getChildAt(i); 914 cl.setBackgroundAlpha(alpha); 915 } 916 } 917 918 public float getChildrenOutlineAlpha() { 919 return mChildrenOutlineAlpha; 920 } 921 922 private void showBackgroundGradientForAllApps() { 923 showBackgroundGradient(); 924 mDrawCustomizeTrayBackground = false; 925 } 926 927 private void showBackgroundGradientForCustomizeTray() { 928 showBackgroundGradient(); 929 mDrawCustomizeTrayBackground = true; 930 } 931 932 private void showBackgroundGradient() { 933 if (mBackground == null) return; 934 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 935 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 936 mBackgroundFadeInAnimation = ObjectAnimator.ofFloat(this, "backgroundAlpha", 1.0f); 937 mBackgroundFadeInAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 938 mBackgroundFadeInAnimation.setDuration(BACKGROUND_FADE_IN_DURATION); 939 mBackgroundFadeInAnimation.start(); 940 } 941 942 private void hideBackgroundGradient() { 943 if (mBackground == null) return; 944 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 945 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 946 mBackgroundFadeOutAnimation = ObjectAnimator.ofFloat(this, "backgroundAlpha", 0.0f); 947 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 948 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 949 mBackgroundFadeOutAnimation.start(); 950 } 951 952 public void setBackgroundAlpha(float alpha) { 953 mBackgroundAlpha = alpha; 954 invalidate(); 955 } 956 957 public float getBackgroundAlpha() { 958 return mBackgroundAlpha; 959 } 960 961 /** 962 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 963 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 964 * as being larger. This method computes what offset the rotated view should be translated 965 * in order to minimize this perceived gap. 966 * @param degrees Angle of the view 967 * @param width Width of the view 968 * @param height Height of the view 969 * @return Offset to be used in a View.setTranslationX() call 970 */ 971 private float getOffsetXForRotation(float degrees, int width, int height) { 972 mMatrix.reset(); 973 mCamera.save(); 974 mCamera.rotateY(Math.abs(degrees)); 975 mCamera.getMatrix(mMatrix); 976 mCamera.restore(); 977 978 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 979 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 980 mTempFloat2[0] = width; 981 mTempFloat2[1] = height; 982 mMatrix.mapPoints(mTempFloat2); 983 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 984 } 985 986 float backgroundAlphaInterpolator(float r) { 987 float pivotA = 0.1f; 988 float pivotB = 0.4f; 989 if (r < pivotA) { 990 return 0; 991 } else if (r > pivotB) { 992 return 1.0f; 993 } else { 994 return (r - pivotA)/(pivotB - pivotA); 995 } 996 } 997 998 float overScrollBackgroundAlphaInterpolator(float r) { 999 float threshold = 0.08f; 1000 1001 if (r > mOverScrollMaxBackgroundAlpha) { 1002 mOverScrollMaxBackgroundAlpha = r; 1003 } else if (r < mOverScrollMaxBackgroundAlpha) { 1004 r = mOverScrollMaxBackgroundAlpha; 1005 } 1006 1007 return Math.min(r / threshold, 1.0f); 1008 } 1009 1010 @Override 1011 protected void screenScrolled(int screenCenter) { 1012 final int halfScreenSize = getMeasuredWidth() / 2; 1013 1014 for (int i = 0; i < getChildCount(); i++) { 1015 CellLayout cl = (CellLayout) getChildAt(i); 1016 if (cl != null) { 1017 int totalDistance = getScaledMeasuredWidth(cl) + mPageSpacing; 1018 int delta = screenCenter - (getChildOffset(i) - 1019 getRelativeChildOffset(i) + halfScreenSize); 1020 1021 float scrollProgress = delta / (totalDistance * 1.0f); 1022 scrollProgress = Math.min(scrollProgress, 1.0f); 1023 scrollProgress = Math.max(scrollProgress, -1.0f); 1024 1025 // If the current page (i) is being overscrolled, we use a different 1026 // set of rules for setting the background alpha multiplier. 1027 if ((mScrollX < 0 && i == 0) || (mScrollX > mMaxScrollX && 1028 i == getChildCount() -1 )) { 1029 cl.setBackgroundAlphaMultiplier( 1030 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 1031 mOverScrollPageIndex = i; 1032 } else if (mOverScrollPageIndex != i) { 1033 cl.setBackgroundAlphaMultiplier( 1034 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1035 } 1036 1037 float rotation = WORKSPACE_ROTATION * scrollProgress; 1038 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1039 cl.setTranslationX(translationX); 1040 1041 cl.setRotationY(rotation); 1042 } 1043 } 1044 } 1045 1046 protected void onAttachedToWindow() { 1047 super.onAttachedToWindow(); 1048 computeScroll(); 1049 mDragController.setWindowToken(getWindowToken()); 1050 } 1051 1052 @Override 1053 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1054 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1055 mUpdateWallpaperOffsetImmediately = true; 1056 } 1057 super.onLayout(changed, left, top, right, bottom); 1058 1059 // if shrinkToBottom() is called on initialization, it has to be deferred 1060 // until after the first call to onLayout so that it has the correct width 1061 if (mWaitingToShrink) { 1062 // shrink can trigger a synchronous onLayout call, so we 1063 // post this to avoid a stack overflow / tangled onLayout calls 1064 post(new Runnable() { 1065 public void run() { 1066 shrink(mWaitingToShrinkState, false); 1067 mWaitingToShrink = false; 1068 } 1069 }); 1070 } 1071 1072 if (LauncherApplication.isInPlaceRotationEnabled()) { 1073 // When the device is rotated, the scroll position of the current screen 1074 // needs to be refreshed 1075 setCurrentPage(getCurrentPage()); 1076 } 1077 } 1078 1079 @Override 1080 protected void onDraw(Canvas canvas) { 1081 updateWallpaperOffsets(); 1082 1083 // Draw the background gradient if necessary 1084 if (mBackground != null && mBackgroundAlpha > 0.0f) { 1085 int alpha = (int) (mBackgroundAlpha * 255); 1086 if (mDrawCustomizeTrayBackground) { 1087 // Find out where to offset the gradient for the customization tray content 1088 mCustomizationDrawer.getLocationOnScreen(mCustomizationDrawerPos); 1089 final Matrix m = mCustomizationDrawer.getMatrix(); 1090 mCustomizationDrawerTransformedPos[0] = 0.0f; 1091 mCustomizationDrawerTransformedPos[1] = mCustomizationDrawerContent.getTop(); 1092 m.mapPoints(mCustomizationDrawerTransformedPos); 1093 1094 // Draw the bg glow behind the gradient 1095 mCustomizeTrayBackground.setAlpha(alpha); 1096 mCustomizeTrayBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1097 getMeasuredHeight()); 1098 mCustomizeTrayBackground.draw(canvas); 1099 1100 // Draw the bg gradient 1101 final int offset = (int) (mCustomizationDrawerPos[1] + 1102 mCustomizationDrawerTransformedPos[1]); 1103 mBackground.setAlpha(alpha); 1104 mBackground.setBounds(mScrollX, offset, mScrollX + getMeasuredWidth(), 1105 offset + getMeasuredHeight()); 1106 mBackground.draw(canvas); 1107 } else { 1108 mBackground.setAlpha(alpha); 1109 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1110 getMeasuredHeight()); 1111 mBackground.draw(canvas); 1112 } 1113 } 1114 super.onDraw(canvas); 1115 } 1116 1117 @Override 1118 protected void dispatchDraw(Canvas canvas) { 1119 if (mIsSmall || mIsInUnshrinkAnimation) { 1120 // Draw all the workspaces if we're small 1121 final int pageCount = getChildCount(); 1122 final long drawingTime = getDrawingTime(); 1123 for (int i = 0; i < pageCount; i++) { 1124 final View page = (View) getChildAt(i); 1125 1126 drawChild(canvas, page, drawingTime); 1127 } 1128 } else { 1129 super.dispatchDraw(canvas); 1130 1131 final int width = getWidth(); 1132 final int height = getHeight(); 1133 1134 // In portrait orientation, draw the glowing edge when dragging to adjacent screens 1135 if (mInScrollArea && (height > width)) { 1136 final int pageHeight = getChildAt(0).getHeight(); 1137 1138 // This determines the height of the glowing edge: 90% of the page height 1139 final int padding = (int) ((height - pageHeight) * 0.5f + pageHeight * 0.1f); 1140 1141 final CellLayout leftPage = (CellLayout) getChildAt(mCurrentPage - 1); 1142 final CellLayout rightPage = (CellLayout) getChildAt(mCurrentPage + 1); 1143 1144 if (leftPage != null && leftPage.getIsDragOverlapping()) { 1145 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left); 1146 d.setBounds(mScrollX, padding, mScrollX + d.getIntrinsicWidth(), height - padding); 1147 d.draw(canvas); 1148 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 1149 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right); 1150 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), padding, mScrollX + width, height - padding); 1151 d.draw(canvas); 1152 } 1153 } 1154 1155 if (mDropView != null) { 1156 // We are animating an item that was just dropped on the home screen. 1157 // Render its View in the current animation position. 1158 canvas.save(Canvas.MATRIX_SAVE_FLAG); 1159 final int xPos = mDropViewPos[0] - mDropView.getScrollX(); 1160 final int yPos = mDropViewPos[1] - mDropView.getScrollY(); 1161 canvas.translate(xPos, yPos); 1162 mDropView.draw(canvas); 1163 canvas.restore(); 1164 } 1165 } 1166 } 1167 1168 @Override 1169 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1170 if (!mLauncher.isAllAppsVisible()) { 1171 final Folder openFolder = getOpenFolder(); 1172 if (openFolder != null) { 1173 return openFolder.requestFocus(direction, previouslyFocusedRect); 1174 } else { 1175 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1176 } 1177 } 1178 return false; 1179 } 1180 1181 @Override 1182 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1183 if (!mLauncher.isAllAppsVisible()) { 1184 final Folder openFolder = getOpenFolder(); 1185 if (openFolder != null) { 1186 openFolder.addFocusables(views, direction); 1187 } else { 1188 super.addFocusables(views, direction, focusableMode); 1189 } 1190 } 1191 } 1192 1193 @Override 1194 public boolean dispatchTouchEvent(MotionEvent ev) { 1195 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 1196 // (In XLarge mode, the workspace is shrunken below all apps, and responds to taps 1197 // ie when you click on a mini-screen, it zooms back to that screen) 1198 if (!LauncherApplication.isScreenXLarge() && mLauncher.isAllAppsVisible()) { 1199 return false; 1200 } 1201 } 1202 1203 return super.dispatchTouchEvent(ev); 1204 } 1205 1206 void enableChildrenCache(int fromPage, int toPage) { 1207 if (fromPage > toPage) { 1208 final int temp = fromPage; 1209 fromPage = toPage; 1210 toPage = temp; 1211 } 1212 1213 final int screenCount = getChildCount(); 1214 1215 fromPage = Math.max(fromPage, 0); 1216 toPage = Math.min(toPage, screenCount - 1); 1217 1218 for (int i = fromPage; i <= toPage; i++) { 1219 final CellLayout layout = (CellLayout) getChildAt(i); 1220 layout.setChildrenDrawnWithCacheEnabled(true); 1221 layout.setChildrenDrawingCacheEnabled(true); 1222 } 1223 } 1224 1225 void clearChildrenCache() { 1226 final int screenCount = getChildCount(); 1227 for (int i = 0; i < screenCount; i++) { 1228 final CellLayout layout = (CellLayout) getChildAt(i); 1229 layout.setChildrenDrawnWithCacheEnabled(false); 1230 } 1231 } 1232 1233 @Override 1234 public boolean onTouchEvent(MotionEvent ev) { 1235 AllAppsPagedView allApps = (AllAppsPagedView) 1236 mLauncher.findViewById(R.id.all_apps_paged_view); 1237 1238 if (mLauncher.isAllAppsVisible() && mShrinkState == ShrinkState.BOTTOM_HIDDEN 1239 && allApps != null) { 1240 if (ev.getAction() == MotionEvent.ACTION_UP && 1241 allApps.getTouchState() == TOUCH_STATE_REST) { 1242 1243 // Cancel any scrolling that is in progress. 1244 if (!mScroller.isFinished()) { 1245 mScroller.abortAnimation(); 1246 } 1247 setCurrentPage(mCurrentPage); 1248 1249 if (mShrinkState == ShrinkState.BOTTOM_HIDDEN) { 1250 mLauncher.showWorkspace(true); 1251 } 1252 allApps.onTouchEvent(ev); 1253 return true; 1254 } else { 1255 return allApps.onTouchEvent(ev); 1256 } 1257 } 1258 return super.onTouchEvent(ev); 1259 } 1260 1261 protected void enableChildrenLayers(boolean enable) { 1262 for (int i = 0; i < getPageCount(); i++) { 1263 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(enable); 1264 } 1265 } 1266 @Override 1267 protected void pageBeginMoving() { 1268 enableChildrenLayers(true); 1269 super.pageBeginMoving(); 1270 } 1271 1272 @Override 1273 protected void pageEndMoving() { 1274 if (!mIsSmall && !mIsInUnshrinkAnimation) { 1275 enableChildrenLayers(false); 1276 } 1277 super.pageEndMoving(); 1278 } 1279 1280 @Override 1281 protected void onWallpaperTap(MotionEvent ev) { 1282 final int[] position = mTempCell; 1283 getLocationOnScreen(position); 1284 1285 int pointerIndex = ev.getActionIndex(); 1286 position[0] += (int) ev.getX(pointerIndex); 1287 position[1] += (int) ev.getY(pointerIndex); 1288 1289 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1290 ev.getAction() == MotionEvent.ACTION_UP 1291 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1292 position[0], position[1], 0, null); 1293 } 1294 1295 public boolean isSmall() { 1296 return mIsSmall; 1297 } 1298 1299 private float getYScaleForScreen(int screen) { 1300 int x = Math.abs(screen - 2); 1301 1302 // TODO: This should be generalized for use with arbitrary rotation angles. 1303 switch(x) { 1304 case 0: return EXTRA_SCALE_FACTOR_0; 1305 case 1: return EXTRA_SCALE_FACTOR_1; 1306 case 2: return EXTRA_SCALE_FACTOR_2; 1307 } 1308 return 1.0f; 1309 } 1310 1311 public void shrink(ShrinkState shrinkState) { 1312 shrink(shrinkState, true); 1313 } 1314 1315 // we use this to shrink the workspace for the all apps view and the customize view 1316 public void shrink(ShrinkState shrinkState, boolean animated) { 1317 if (mFirstLayout) { 1318 // (mFirstLayout == "first layout has not happened yet") 1319 // if we get a call to shrink() as part of our initialization (for example, if 1320 // Launcher is started in All Apps mode) then we need to wait for a layout call 1321 // to get our width so we can layout the mini-screen views correctly 1322 mWaitingToShrink = true; 1323 mWaitingToShrinkState = shrinkState; 1324 return; 1325 } 1326 // Stop any scrolling, move to the current page right away 1327 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1328 if (!mIsDragInProcess) { 1329 updateWhichPagesAcceptDrops(shrinkState); 1330 } 1331 1332 CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 1333 if (currentPage == null) { 1334 Log.w(TAG, "currentPage is NULL! mCurrentPage " + mCurrentPage 1335 + " mNextPage " + mNextPage); 1336 return; 1337 } 1338 if (currentPage.getBackgroundAlphaMultiplier() < 1.0f) { 1339 currentPage.setBackgroundAlpha(0.0f); 1340 } 1341 currentPage.setBackgroundAlphaMultiplier(1.0f); 1342 1343 mIsSmall = true; 1344 mShrinkState = shrinkState; 1345 1346 // we intercept and reject all touch events when we're small, so be sure to reset the state 1347 mTouchState = TOUCH_STATE_REST; 1348 mActivePointerId = INVALID_POINTER; 1349 1350 final Resources res = getResources(); 1351 final int screenWidth = getWidth(); 1352 final int screenHeight = getHeight(); 1353 1354 // Making the assumption that all pages have the same width as the 0th 1355 final int pageWidth = getChildAt(0).getMeasuredWidth(); 1356 final int pageHeight = getChildAt(0).getMeasuredHeight(); 1357 1358 final int scaledPageWidth = (int) (SHRINK_FACTOR * pageWidth); 1359 final int scaledPageHeight = (int) (SHRINK_FACTOR * pageHeight); 1360 final float extraScaledSpacing = res.getDimension(R.dimen.smallScreenExtraSpacing); 1361 1362 final int screenCount = getChildCount(); 1363 float totalWidth = screenCount * scaledPageWidth + (screenCount - 1) * extraScaledSpacing; 1364 1365 boolean isPortrait = getMeasuredHeight() > getMeasuredWidth(); 1366 float newY = (isPortrait ? 1367 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginPortrait) : 1368 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginLandscape)); 1369 float finalAlpha = 1.0f; 1370 float extraShrinkFactor = 1.0f; 1371 1372 if (shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1373 newY = screenHeight - newY - scaledPageHeight; 1374 } else if (shrinkState == ShrinkState.BOTTOM_HIDDEN) { 1375 // We shrink and disappear to nothing in the case of all apps 1376 // (which is when we shrink to the bottom) 1377 newY = screenHeight - newY - scaledPageHeight; 1378 finalAlpha = 0.0f; 1379 } else if (shrinkState == ShrinkState.MIDDLE) { 1380 newY = screenHeight / 2 - scaledPageHeight / 2; 1381 finalAlpha = 1.0f; 1382 } else if (shrinkState == ShrinkState.TOP) { 1383 newY = (isPortrait ? 1384 getResources().getDimension(R.dimen.customizeSmallScreenVerticalMarginPortrait) : 1385 getResources().getDimension(R.dimen.customizeSmallScreenVerticalMarginLandscape)); 1386 } 1387 1388 int duration; 1389 if (shrinkState == ShrinkState.BOTTOM_HIDDEN || shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1390 duration = res.getInteger(R.integer.config_allAppsWorkspaceShrinkTime); 1391 } else { 1392 duration = res.getInteger(R.integer.config_customizeWorkspaceShrinkTime); 1393 } 1394 1395 // We animate all the screens to the centered position in workspace 1396 // At the same time, the screens become greyed/dimmed 1397 1398 // newX is initialized to the left-most position of the centered screens 1399 float newX = mScroller.getFinalX() + screenWidth / 2 - totalWidth / 2; 1400 1401 // We are going to scale about the center of the view, so we need to adjust the positions 1402 // of the views accordingly 1403 newX -= (pageWidth - scaledPageWidth) / 2.0f; 1404 newY -= (pageHeight - scaledPageHeight) / 2.0f; 1405 1406 if (mAnimator != null) { 1407 mAnimator.cancel(); 1408 } 1409 1410 mAnimator = new AnimatorSet(); 1411 for (int i = 0; i < screenCount; i++) { 1412 final CellLayout cl = (CellLayout) getChildAt(i); 1413 1414 float rotation = (-i + 2) * WORKSPACE_ROTATION; 1415 float rotationScaleX = (float) (1.0f / Math.cos(Math.PI * rotation / 180.0f)); 1416 float rotationScaleY = getYScaleForScreen(i); 1417 1418 if (animated) { 1419 ObjectAnimator animWithInterpolator = ObjectAnimator.ofPropertyValuesHolder(cl, 1420 PropertyValuesHolder.ofFloat("x", newX), 1421 PropertyValuesHolder.ofFloat("y", newY), 1422 PropertyValuesHolder.ofFloat("scaleX", 1423 SHRINK_FACTOR * rotationScaleX * extraShrinkFactor), 1424 PropertyValuesHolder.ofFloat("scaleY", 1425 SHRINK_FACTOR * rotationScaleY * extraShrinkFactor), 1426 PropertyValuesHolder.ofFloat("backgroundAlpha", finalAlpha), 1427 PropertyValuesHolder.ofFloat("alpha", finalAlpha), 1428 PropertyValuesHolder.ofFloat("rotationY", rotation)); 1429 1430 animWithInterpolator.setDuration(duration); 1431 animWithInterpolator.setInterpolator(mZoomOutInterpolator); 1432 mAnimator.playTogether(animWithInterpolator); 1433 } else { 1434 cl.setX((int)newX); 1435 cl.setY((int)newY); 1436 cl.setScaleX(SHRINK_FACTOR * rotationScaleX * extraShrinkFactor); 1437 cl.setScaleY(SHRINK_FACTOR * rotationScaleY * extraShrinkFactor); 1438 cl.setBackgroundAlpha(finalAlpha); 1439 cl.setAlpha(finalAlpha); 1440 cl.setRotationY(rotation); 1441 mShrinkAnimationListener.onAnimationEnd(null); 1442 } 1443 // increment newX for the next screen 1444 newX += scaledPageWidth + extraScaledSpacing; 1445 } 1446 1447 float wallpaperOffset = 0.5f; 1448 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 1449 int wallpaperTravelHeight = (int) (display.getHeight() * 1450 wallpaperTravelToScreenHeightRatio(display.getWidth(), display.getHeight())); 1451 float offsetFromCenter = (wallpaperTravelHeight / (float) mWallpaperHeight) / 2f; 1452 boolean isLandscape = display.getWidth() > display.getHeight(); 1453 1454 switch (shrinkState) { 1455 // animating in 1456 case TOP: 1457 // customize 1458 wallpaperOffset = 0.5f + offsetFromCenter; 1459 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.46f : 0.44f); 1460 break; 1461 case MIDDLE: 1462 case SPRING_LOADED: 1463 wallpaperOffset = 0.5f; 1464 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.34f : 0.32f); 1465 break; 1466 case BOTTOM_HIDDEN: 1467 case BOTTOM_VISIBLE: 1468 // allapps 1469 wallpaperOffset = 0.5f - offsetFromCenter; 1470 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.34f : 0.32f); 1471 break; 1472 } 1473 1474 if (animated) { 1475 mWallpaperOffset.setHorizontalCatchupConstant(0.46f); 1476 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1477 } 1478 1479 setLayoutScale(1.0f); 1480 if (animated) { 1481 mSyncWallpaperOffsetWithScroll = false; 1482 ObjectAnimator wallpaperAnim = ObjectAnimator.ofPropertyValuesHolder(this, 1483 PropertyValuesHolder.ofFloat("verticalWallpaperOffset", wallpaperOffset), 1484 PropertyValuesHolder.ofFloat("horizontalWallpaperOffset", 0.5f)); 1485 mAnimator.play(wallpaperAnim); 1486 1487 wallpaperAnim.setDuration(duration); 1488 wallpaperAnim.setInterpolator(mZoomOutInterpolator); 1489 mAnimator.addListener(mShrinkAnimationListener); 1490 mAnimator.start(); 1491 } else { 1492 setVerticalWallpaperOffset(wallpaperOffset); 1493 setHorizontalWallpaperOffset(0.5f); 1494 updateWallpaperOffsetImmediately(); 1495 } 1496 setChildrenDrawnWithCacheEnabled(true); 1497 1498 if (shrinkState == ShrinkState.TOP) { 1499 showBackgroundGradientForCustomizeTray(); 1500 } else { 1501 showBackgroundGradientForAllApps(); 1502 } 1503 } 1504 1505 /* 1506 * This interpolator emulates the rate at which the perceived scale of an object changes 1507 * as its distance from a camera increases. When this interpolator is applied to a scale 1508 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1509 * from the camera. 1510 */ 1511 static class ZInterpolator implements TimeInterpolator { 1512 private float focalLength; 1513 1514 public ZInterpolator(float foc) { 1515 focalLength = foc; 1516 } 1517 1518 public float getInterpolation(float input) { 1519 return (1.0f - focalLength / (focalLength + input)) / 1520 (1.0f - focalLength / (focalLength + 1.0f)); 1521 } 1522 } 1523 1524 /* 1525 * The exact reverse of ZInterpolator. 1526 */ 1527 static class InverseZInterpolator implements TimeInterpolator { 1528 private ZInterpolator zInterpolator; 1529 public InverseZInterpolator(float foc) { 1530 zInterpolator = new ZInterpolator(foc); 1531 } 1532 public float getInterpolation(float input) { 1533 return 1 - zInterpolator.getInterpolation(1 - input); 1534 } 1535 } 1536 1537 /* 1538 * ZInterpolator compounded with an ease-out. 1539 */ 1540 static class ZoomOutInterpolator implements TimeInterpolator { 1541 private final ZInterpolator zInterpolator = new ZInterpolator(0.2f); 1542 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(1.5f); 1543 1544 public float getInterpolation(float input) { 1545 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1546 } 1547 } 1548 1549 /* 1550 * InvereZInterpolator compounded with an ease-out. 1551 */ 1552 static class ZoomInInterpolator implements TimeInterpolator { 1553 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1554 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1555 1556 public float getInterpolation(float input) { 1557 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1558 } 1559 } 1560 1561 private final ZoomOutInterpolator mZoomOutInterpolator = new ZoomOutInterpolator(); 1562 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1563 1564 private void updateWhichPagesAcceptDrops(ShrinkState state) { 1565 updateWhichPagesAcceptDropsHelper(state, false, 1, 1); 1566 } 1567 1568 private void updateWhichPagesAcceptDropsDuringDrag(ShrinkState state, int spanX, int spanY) { 1569 updateWhichPagesAcceptDropsHelper(state, true, spanX, spanY); 1570 } 1571 1572 private void updateWhichPagesAcceptDropsHelper( 1573 ShrinkState state, boolean isDragHappening, int spanX, int spanY) { 1574 final int screenCount = getChildCount(); 1575 for (int i = 0; i < screenCount; i++) { 1576 CellLayout cl = (CellLayout) getChildAt(i); 1577 cl.setIsDragOccuring(isDragHappening); 1578 switch (state) { 1579 case TOP: 1580 cl.setIsDefaultDropTarget(i == mCurrentPage); 1581 case BOTTOM_HIDDEN: 1582 case BOTTOM_VISIBLE: 1583 case SPRING_LOADED: 1584 if (!isDragHappening) { 1585 // even if a drag isn't happening, we don't want to show a screen as 1586 // accepting drops if it doesn't have at least one free cell 1587 spanX = 1; 1588 spanY = 1; 1589 } 1590 // the page accepts drops if we can find at least one empty spot 1591 cl.setAcceptsDrops(cl.findCellForSpan(null, spanX, spanY)); 1592 break; 1593 default: 1594 throw new RuntimeException("Unhandled ShrinkState " + state); 1595 } 1596 } 1597 } 1598 1599 /* 1600 * 1601 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithItemMinSize) whenever we 1602 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1603 * 1604 * These methods mark the appropriate pages as accepting drops (which alters their visual 1605 * appearance). 1606 * 1607 */ 1608 public void onDragStartedWithItemSpans(int spanX, int spanY, Bitmap b) { 1609 mIsDragInProcess = true; 1610 1611 final Canvas canvas = new Canvas(); 1612 1613 // We need to add extra padding to the bitmap to make room for the glow effect 1614 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1615 1616 CellLayout cl = (CellLayout) getChildAt(0); 1617 int[] desiredSize = cl.cellSpansToSize(spanX, spanY); 1618 // The outline is used to visualize where the item will land if dropped 1619 mDragOutline = createDragOutline(b, canvas, bitmapPadding, desiredSize[0], desiredSize[1]); 1620 1621 updateWhichPagesAcceptDropsDuringDrag(mShrinkState, spanX, spanY); 1622 } 1623 1624 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1625 // never dragged over 1626 public void onDragStopped(boolean success) { 1627 mLastDragView = null; 1628 // In the success case, DragController has already called onDragExit() 1629 if (!success) { 1630 doDragExit(); 1631 } 1632 mIsDragInProcess = false; 1633 updateWhichPagesAcceptDrops(mShrinkState); 1634 } 1635 1636 // We call this when we trigger an unshrink by clicking on the CellLayout cl 1637 public void unshrink(CellLayout clThatWasClicked) { 1638 unshrink(clThatWasClicked, false); 1639 } 1640 1641 public void unshrink(CellLayout clThatWasClicked, boolean springLoaded) { 1642 int newCurrentPage = indexOfChild(clThatWasClicked); 1643 if (mIsSmall) { 1644 if (springLoaded) { 1645 setLayoutScale(SPRING_LOADED_DRAG_SHRINK_FACTOR); 1646 } 1647 scrollToNewPageWithoutMovingPages(newCurrentPage); 1648 unshrink(true, springLoaded); 1649 } 1650 } 1651 1652 1653 public void enterSpringLoadedDragMode(CellLayout clThatWasClicked) { 1654 mShrinkState = ShrinkState.SPRING_LOADED; 1655 unshrink(clThatWasClicked, true); 1656 mDragTargetLayout.onDragEnter(); 1657 } 1658 1659 public void exitSpringLoadedDragMode(ShrinkState shrinkState) { 1660 shrink(shrinkState); 1661 if (mDragTargetLayout != null) { 1662 mDragTargetLayout.onDragExit(); 1663 } 1664 } 1665 1666 void unshrink(boolean animated) { 1667 unshrink(animated, false); 1668 } 1669 1670 void unshrink(boolean animated, boolean springLoaded) { 1671 mWaitingToShrink = false; 1672 if (mIsSmall) { 1673 float finalScaleFactor = 1.0f; 1674 float finalBackgroundAlpha = 0.0f; 1675 if (springLoaded) { 1676 finalScaleFactor = SPRING_LOADED_DRAG_SHRINK_FACTOR; 1677 finalBackgroundAlpha = 1.0f; 1678 } else { 1679 mIsSmall = false; 1680 } 1681 if (mAnimator != null) { 1682 mAnimator.cancel(); 1683 } 1684 1685 mAnimator = new AnimatorSet(); 1686 final int screenCount = getChildCount(); 1687 1688 final int duration = getResources().getInteger(R.integer.config_workspaceUnshrinkTime); 1689 1690 for (int i = 0; i < screenCount; i++) { 1691 final CellLayout cl = (CellLayout)getChildAt(i); 1692 float finalAlphaValue = (i == mCurrentPage) ? 1.0f : 0.0f; 1693 float finalAlphaMultiplierValue = 1694 ((i == mCurrentPage) && (mShrinkState != ShrinkState.SPRING_LOADED)) ? 1695 0.0f : 1.0f; 1696 float rotation = 0.0f; 1697 1698 if (i < mCurrentPage) { 1699 rotation = WORKSPACE_ROTATION; 1700 } else if (i > mCurrentPage) { 1701 rotation = -WORKSPACE_ROTATION; 1702 } 1703 1704 float translation = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1705 1706 if (animated) { 1707 ObjectAnimator animWithInterpolator = ObjectAnimator.ofPropertyValuesHolder(cl, 1708 PropertyValuesHolder.ofFloat("translationX", translation), 1709 PropertyValuesHolder.ofFloat("translationY", 0.0f), 1710 PropertyValuesHolder.ofFloat("scaleX", finalScaleFactor), 1711 PropertyValuesHolder.ofFloat("scaleY", finalScaleFactor), 1712 PropertyValuesHolder.ofFloat("backgroundAlpha", finalBackgroundAlpha), 1713 PropertyValuesHolder.ofFloat("backgroundAlphaMultiplier", 1714 finalAlphaMultiplierValue), 1715 PropertyValuesHolder.ofFloat("alpha", finalAlphaValue)); 1716 animWithInterpolator.setDuration(duration); 1717 animWithInterpolator.setInterpolator(mZoomInInterpolator); 1718 1719 ObjectAnimator rotationAnim = ObjectAnimator.ofPropertyValuesHolder(cl, 1720 PropertyValuesHolder.ofFloat("rotationY", rotation)); 1721 rotationAnim.setDuration(duration); 1722 rotationAnim.setInterpolator(new DecelerateInterpolator(2.0f)); 1723 1724 mAnimator.playTogether(animWithInterpolator, rotationAnim); 1725 } else { 1726 cl.setTranslationX(translation); 1727 cl.setTranslationY(0.0f); 1728 cl.setScaleX(finalScaleFactor); 1729 cl.setScaleY(finalScaleFactor); 1730 cl.setBackgroundAlpha(0.0f); 1731 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1732 cl.setAlpha(finalAlphaValue); 1733 cl.setRotationY(rotation); 1734 mUnshrinkAnimationListener.onAnimationEnd(null); 1735 } 1736 } 1737 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 1738 boolean isLandscape = display.getWidth() > display.getHeight(); 1739 switch (mShrinkState) { 1740 // animating out 1741 case TOP: 1742 // customize 1743 if (animated) { 1744 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.65f : 0.62f); 1745 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.65f : 0.62f); 1746 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1747 } 1748 break; 1749 case MIDDLE: 1750 case SPRING_LOADED: 1751 if (animated) { 1752 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.49f : 0.46f); 1753 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.49f : 0.46f); 1754 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1755 } 1756 break; 1757 case BOTTOM_HIDDEN: 1758 case BOTTOM_VISIBLE: 1759 // all apps 1760 if (animated) { 1761 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.49f : 0.46f); 1762 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.49f : 0.46f); 1763 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1764 } 1765 break; 1766 } 1767 if (animated) { 1768 ObjectAnimator wallpaperAnim = ObjectAnimator.ofPropertyValuesHolder(this, 1769 PropertyValuesHolder.ofFloat( 1770 "verticalWallpaperOffset", 0.5f), 1771 PropertyValuesHolder.ofFloat( 1772 "horizontalWallpaperOffset", wallpaperOffsetForCurrentScroll())); 1773 wallpaperAnim.setDuration(duration); 1774 wallpaperAnim.setInterpolator(mZoomInInterpolator); 1775 mAnimator.play(wallpaperAnim); 1776 1777 // If we call this when we're not animated, onAnimationEnd is never called on 1778 // the listener; make sure we only use the listener when we're actually animating 1779 mAnimator.addListener(mUnshrinkAnimationListener); 1780 mAnimator.start(); 1781 } else { 1782 setHorizontalWallpaperOffset(wallpaperOffsetForCurrentScroll()); 1783 setVerticalWallpaperOffset(0.5f); 1784 updateWallpaperOffsetImmediately(); 1785 } 1786 } 1787 1788 if (!springLoaded) { 1789 hideBackgroundGradient(); 1790 } 1791 } 1792 1793 /** 1794 * Draw the View v into the given Canvas. 1795 * 1796 * @param v the view to draw 1797 * @param destCanvas the canvas to draw on 1798 * @param padding the horizontal and vertical padding to use when drawing 1799 */ 1800 private void drawDragView(View v, Canvas destCanvas, int padding) { 1801 final Rect clipRect = mTempRect; 1802 v.getDrawingRect(clipRect); 1803 1804 // For a TextView, adjust the clip rect so that we don't include the text label 1805 if (v instanceof BubbleTextView) { 1806 final BubbleTextView tv = (BubbleTextView) v; 1807 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1808 tv.getLayout().getLineTop(0); 1809 } else if (v instanceof TextView) { 1810 final TextView tv = (TextView) v; 1811 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1812 tv.getLayout().getLineTop(0); 1813 } 1814 1815 // Draw the View into the bitmap. 1816 // The translate of scrollX and scrollY is necessary when drawing TextViews, because 1817 // they set scrollX and scrollY to large values to achieve centered text 1818 1819 destCanvas.save(); 1820 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1821 destCanvas.clipRect(clipRect, Op.REPLACE); 1822 v.draw(destCanvas); 1823 destCanvas.restore(); 1824 } 1825 1826 /** 1827 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1828 * Responsibility for the bitmap is transferred to the caller. 1829 */ 1830 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1831 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1832 final Bitmap b = Bitmap.createBitmap( 1833 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1834 1835 canvas.setBitmap(b); 1836 drawDragView(v, canvas, padding); 1837 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1838 return b; 1839 } 1840 1841 /** 1842 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1843 * Responsibility for the bitmap is transferred to the caller. 1844 */ 1845 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h) { 1846 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1847 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1848 canvas.setBitmap(b); 1849 1850 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 1851 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 1852 (h - padding) / (float) orig.getHeight()); 1853 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 1854 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 1855 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 1856 1857 // center the image 1858 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 1859 1860 Paint p = new Paint(); 1861 p.setFilterBitmap(true); 1862 canvas.drawBitmap(orig, src, dst, p); 1863 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1864 1865 return b; 1866 } 1867 1868 /** 1869 * Creates a drag outline to represent a drop (that we don't have the actual information for 1870 * yet). May be changed in the future to alter the drop outline slightly depending on the 1871 * clip description mime data. 1872 */ 1873 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 1874 Resources r = getResources(); 1875 final int outlineColor = r.getColor(R.color.drag_outline_color); 1876 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 1877 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 1878 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 1879 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 1880 final Bitmap b = Bitmap.createBitmap( 1881 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 1882 1883 canvas.setBitmap(b); 1884 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 1885 rectRadius, rectRadius, mExternalDragOutlinePaint); 1886 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1887 return b; 1888 } 1889 1890 /** 1891 * Returns a new bitmap to show when the given View is being dragged around. 1892 * Responsibility for the bitmap is transferred to the caller. 1893 */ 1894 private Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1895 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1896 final Bitmap b = Bitmap.createBitmap( 1897 mDragOutline.getWidth(), mDragOutline.getHeight(), Bitmap.Config.ARGB_8888); 1898 1899 canvas.setBitmap(b); 1900 canvas.drawBitmap(mDragOutline, 0, 0, null); 1901 drawDragView(v, canvas, padding); 1902 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 1903 1904 return b; 1905 } 1906 1907 void startDrag(CellLayout.CellInfo cellInfo) { 1908 View child = cellInfo.cell; 1909 1910 // Make sure the drag was started by a long press as opposed to a long click. 1911 if (!child.isInTouchMode()) { 1912 return; 1913 } 1914 1915 mDragInfo = cellInfo; 1916 1917 CellLayout current = (CellLayout) getChildAt(cellInfo.screen); 1918 current.onDragChild(child); 1919 1920 child.clearFocus(); 1921 child.setPressed(false); 1922 1923 final Canvas canvas = new Canvas(); 1924 1925 // We need to add extra padding to the bitmap to make room for the glow effect 1926 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1927 1928 // The outline is used to visualize where the item will land if dropped 1929 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 1930 1931 // The drag bitmap follows the touch point around on the screen 1932 final Bitmap b = createDragBitmap(child, canvas, bitmapPadding); 1933 1934 final int bmpWidth = b.getWidth(); 1935 final int bmpHeight = b.getHeight(); 1936 child.getLocationOnScreen(mTempXY); 1937 final int screenX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 1938 final int screenY = (int) mTempXY[1] + (child.getHeight() - bmpHeight) / 2; 1939 mLauncher.lockScreenOrientation(); 1940 mDragController.startDrag(b, screenX, screenY, 0, 0, bmpWidth, bmpHeight, this, 1941 child.getTag(), DragController.DRAG_ACTION_MOVE, null); 1942 b.recycle(); 1943 } 1944 1945 void addApplicationShortcut(ShortcutInfo info, int screen, int cellX, int cellY, 1946 boolean insertAtFirst, int intersectX, int intersectY) { 1947 final CellLayout cellLayout = (CellLayout) getChildAt(screen); 1948 View view = mLauncher.createShortcut(R.layout.application, cellLayout, (ShortcutInfo) info); 1949 1950 final int[] cellXY = new int[2]; 1951 cellLayout.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1952 addInScreen(view, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1953 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 1954 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 1955 cellXY[0], cellXY[1]); 1956 } 1957 1958 private void setPositionForDropAnimation( 1959 View dragView, int dragViewX, int dragViewY, View parent, View child) { 1960 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 1961 1962 // Based on the position of the drag view, find the top left of the original view 1963 int viewX = dragViewX + (dragView.getWidth() - child.getWidth()) / 2; 1964 int viewY = dragViewY + (dragView.getHeight() - child.getHeight()) / 2; 1965 viewX += getResources().getInteger(R.integer.config_dragViewOffsetX); 1966 viewY += getResources().getInteger(R.integer.config_dragViewOffsetY); 1967 1968 // Set its old pos (in the new parent's coordinates); it will be animated 1969 // in animateViewIntoPosition after the next layout pass 1970 lp.oldX = viewX - (parent.getLeft() - mScrollX); 1971 lp.oldY = viewY - (parent.getTop() - mScrollY); 1972 } 1973 1974 /* 1975 * We should be careful that this method cannot result in any synchronous requestLayout() 1976 * calls, as it is called from onLayout(). 1977 */ 1978 public void animateViewIntoPosition(final View view) { 1979 final CellLayout parent = (CellLayout) view.getParent().getParent(); 1980 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 1981 1982 // Convert the animation params to be relative to the Workspace, not the CellLayout 1983 final int fromX = lp.oldX + parent.getLeft(); 1984 final int fromY = lp.oldY + parent.getTop(); 1985 1986 final int dx = lp.x - lp.oldX; 1987 final int dy = lp.y - lp.oldY; 1988 1989 // Calculate the duration of the animation based on the object's distance 1990 final float dist = (float) Math.sqrt(dx*dx + dy*dy); 1991 final Resources res = getResources(); 1992 final float maxDist = (float) res.getInteger(R.integer.config_dropAnimMaxDist); 1993 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration); 1994 if (dist < maxDist) { 1995 duration *= mQuintEaseOutInterpolator.getInterpolation(dist / maxDist); 1996 } 1997 1998 if (mDropAnim != null) { 1999 mDropAnim.end(); 2000 } 2001 mDropAnim = new ValueAnimator(); 2002 mDropAnim.setInterpolator(mQuintEaseOutInterpolator); 2003 2004 // The view is invisible during the animation; we render it manually. 2005 mDropAnim.addListener(new AnimatorListenerAdapter() { 2006 public void onAnimationStart(Animator animation) { 2007 // Set this here so that we don't render it until the animation begins 2008 mDropView = view; 2009 } 2010 2011 public void onAnimationEnd(Animator animation) { 2012 if (mDropView != null) { 2013 mDropView.setVisibility(View.VISIBLE); 2014 mDropView = null; 2015 } 2016 } 2017 }); 2018 2019 mDropAnim.setDuration(duration); 2020 mDropAnim.setFloatValues(0.0f, 1.0f); 2021 mDropAnim.removeAllUpdateListeners(); 2022 mDropAnim.addUpdateListener(new AnimatorUpdateListener() { 2023 public void onAnimationUpdate(ValueAnimator animation) { 2024 final float percent = (Float) animation.getAnimatedValue(); 2025 // Invalidate the old position 2026 invalidate(mDropViewPos[0], mDropViewPos[1], 2027 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 2028 2029 mDropViewPos[0] = fromX + (int) (percent * dx + 0.5f); 2030 mDropViewPos[1] = fromY + (int) (percent * dy + 0.5f); 2031 invalidate(mDropViewPos[0], mDropViewPos[1], 2032 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 2033 } 2034 }); 2035 2036 mDropAnim.start(); 2037 } 2038 2039 /** 2040 * {@inheritDoc} 2041 */ 2042 public boolean acceptDrop(DragSource source, int x, int y, 2043 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 2044 2045 // If it's an external drop (e.g. from All Apps), check if it should be accepted 2046 if (source != this) { 2047 // Don't accept the drop if we're not over a screen at time of drop 2048 if (mDragTargetLayout == null || !mDragTargetLayout.getAcceptsDrops()) { 2049 return false; 2050 } 2051 2052 final CellLayout.CellInfo dragCellInfo = mDragInfo; 2053 final int spanX = dragCellInfo == null ? 1 : dragCellInfo.spanX; 2054 final int spanY = dragCellInfo == null ? 1 : dragCellInfo.spanY; 2055 2056 final View ignoreView = dragCellInfo == null ? null : dragCellInfo.cell; 2057 2058 // Don't accept the drop if there's no room for the item 2059 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 2060 mLauncher.showOutOfSpaceMessage(); 2061 return false; 2062 } 2063 } 2064 return true; 2065 } 2066 2067 public void onDrop(DragSource source, int x, int y, int xOffset, int yOffset, 2068 DragView dragView, Object dragInfo) { 2069 2070 int originX = x - xOffset; 2071 int originY = y - yOffset; 2072 2073 if (mIsSmall || mIsInUnshrinkAnimation) { 2074 // get originX and originY in the local coordinate system of the screen 2075 mTempOriginXY[0] = originX; 2076 mTempOriginXY[1] = originY; 2077 mapPointFromSelfToChild(mDragTargetLayout, mTempOriginXY); 2078 originX = (int)mTempOriginXY[0]; 2079 originY = (int)mTempOriginXY[1]; 2080 } 2081 2082 // When you drag to a particular screen, make that the new current/default screen, so any 2083 // subsequent taps add items to that screen 2084 int dragTargetIndex = indexOfChild(mDragTargetLayout); 2085 if (mCurrentPage != dragTargetIndex && (mIsSmall || mIsInUnshrinkAnimation)) { 2086 scrollToNewPageWithoutMovingPages(dragTargetIndex); 2087 } 2088 2089 if (source != this) { 2090 if (!mIsSmall || mWasSpringLoadedOnDragExit) { 2091 onDropExternal(originX, originY, dragInfo, mDragTargetLayout, false); 2092 } else { 2093 // if we drag and drop to small screens, don't pass the touch x/y coords (when we 2094 // enable spring-loaded adding, however, we do want to pass the touch x/y coords) 2095 onDropExternal(-1, -1, dragInfo, mDragTargetLayout, false); 2096 } 2097 } else if (mDragInfo != null) { 2098 final View cell = mDragInfo.cell; 2099 CellLayout dropTargetLayout = mDragTargetLayout; 2100 2101 // Handle the case where the user drops when in the scroll area. 2102 // This is treated as a drop on the adjacent page. 2103 if (dropTargetLayout == null && mInScrollArea) { 2104 if (mPendingScrollDirection == DragController.SCROLL_LEFT) { 2105 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage - 1); 2106 } else if (mPendingScrollDirection == DragController.SCROLL_RIGHT) { 2107 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage + 1); 2108 } 2109 } 2110 2111 if (dropTargetLayout != null) { 2112 // Move internally 2113 mTargetCell = findNearestVacantArea(originX, originY, 2114 mDragInfo.spanX, mDragInfo.spanY, cell, dropTargetLayout, 2115 mTargetCell); 2116 2117 final int screen = (mTargetCell == null) ? 2118 mDragInfo.screen : indexOfChild(dropTargetLayout); 2119 2120 if (screen != mCurrentPage) { 2121 snapToPage(screen); 2122 } 2123 2124 if (mTargetCell != null) { 2125 if (screen != mDragInfo.screen) { 2126 // Reparent the view 2127 ((CellLayout) getChildAt(mDragInfo.screen)).removeView(cell); 2128 addInScreen(cell, screen, mTargetCell[0], mTargetCell[1], 2129 mDragInfo.spanX, mDragInfo.spanY); 2130 } 2131 2132 // update the item's position after drop 2133 final ItemInfo info = (ItemInfo) cell.getTag(); 2134 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2135 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 2136 lp.cellX = mTargetCell[0]; 2137 lp.cellY = mTargetCell[1]; 2138 cell.setId(LauncherModel.getCellLayoutChildId(-1, mDragInfo.screen, 2139 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2140 2141 LauncherModel.moveItemInDatabase(mLauncher, info, 2142 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2143 lp.cellX, lp.cellY); 2144 } 2145 } 2146 2147 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2148 2149 // Prepare it to be animated into its new position 2150 // This must be called after the view has been re-parented 2151 setPositionForDropAnimation(dragView, originX, originY, parent, cell); 2152 boolean animateDrop = !mWasSpringLoadedOnDragExit; 2153 parent.onDropChild(cell, animateDrop); 2154 } 2155 } 2156 2157 public void onDragEnter(DragSource source, int x, int y, int xOffset, 2158 int yOffset, DragView dragView, Object dragInfo) { 2159 mDragTargetLayout = null; // Reset the drag state 2160 2161 if (!mIsSmall) { 2162 mDragTargetLayout = getCurrentDropLayout(); 2163 mDragTargetLayout.onDragEnter(); 2164 showOutlines(); 2165 } 2166 } 2167 2168 public DropTarget getDropTargetDelegate(DragSource source, int x, int y, 2169 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 2170 2171 if (mIsSmall || mIsInUnshrinkAnimation) { 2172 // If we're shrunken, don't let anyone drag on folders/etc that are on the mini-screens 2173 return null; 2174 } 2175 // We may need to delegate the drag to a child view. If a 1x1 item 2176 // would land in a cell occupied by a DragTarget (e.g. a Folder), 2177 // then drag events should be handled by that child. 2178 2179 ItemInfo item = (ItemInfo)dragInfo; 2180 CellLayout currentLayout = getCurrentDropLayout(); 2181 2182 int dragPointX, dragPointY; 2183 if (item.spanX == 1 && item.spanY == 1) { 2184 // For a 1x1, calculate the drop cell exactly as in onDragOver 2185 dragPointX = x - xOffset; 2186 dragPointY = y - yOffset; 2187 } else { 2188 // Otherwise, use the exact drag coordinates 2189 dragPointX = x; 2190 dragPointY = y; 2191 } 2192 dragPointX += mScrollX - currentLayout.getLeft(); 2193 dragPointY += mScrollY - currentLayout.getTop(); 2194 2195 // If we are dragging over a cell that contains a DropTarget that will 2196 // accept the drop, delegate to that DropTarget. 2197 final int[] cellXY = mTempCell; 2198 currentLayout.estimateDropCell(dragPointX, dragPointY, item.spanX, item.spanY, cellXY); 2199 View child = currentLayout.getChildAt(cellXY[0], cellXY[1]); 2200 if (child instanceof DropTarget) { 2201 DropTarget target = (DropTarget)child; 2202 if (target.acceptDrop(source, x, y, xOffset, yOffset, dragView, dragInfo)) { 2203 return target; 2204 } 2205 } 2206 return null; 2207 } 2208 2209 /** 2210 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 2211 * in the returned structure related to the widgets that match the drop (or a null list if it is 2212 * a shortcut drop). If the drop is not accepted then a null structure is returned. 2213 */ 2214 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 2215 final LauncherModel model = mLauncher.getModel(); 2216 final ClipDescription desc = event.getClipDescription(); 2217 final int mimeTypeCount = desc.getMimeTypeCount(); 2218 for (int i = 0; i < mimeTypeCount; ++i) { 2219 final String mimeType = desc.getMimeType(i); 2220 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 2221 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 2222 } else { 2223 final List<WidgetMimeTypeHandlerData> widgets = 2224 model.resolveWidgetsForMimeType(mContext, mimeType); 2225 if (widgets.size() > 0) { 2226 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 2227 } 2228 } 2229 } 2230 return null; 2231 } 2232 2233 /** 2234 * Global drag and drop handler 2235 */ 2236 @Override 2237 public boolean onDragEvent(DragEvent event) { 2238 final ClipDescription desc = event.getClipDescription(); 2239 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 2240 final int[] pos = new int[2]; 2241 layout.getLocationOnScreen(pos); 2242 // We need to offset the drag coordinates to layout coordinate space 2243 final int x = (int) event.getX() - pos[0]; 2244 final int y = (int) event.getY() - pos[1]; 2245 2246 switch (event.getAction()) { 2247 case DragEvent.ACTION_DRAG_STARTED: { 2248 // Validate this drag 2249 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2250 if (test != null) { 2251 boolean isShortcut = (test.second == null); 2252 if (isShortcut) { 2253 // Check if we have enough space on this screen to add a new shortcut 2254 if (!layout.findCellForSpan(pos, 1, 1)) { 2255 Toast.makeText(mContext, mContext.getString(R.string.out_of_space), 2256 Toast.LENGTH_SHORT).show(); 2257 return false; 2258 } 2259 } 2260 } else { 2261 // Show error message if we couldn't accept any of the items 2262 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 2263 Toast.LENGTH_SHORT).show(); 2264 return false; 2265 } 2266 2267 // Create the drag outline 2268 // We need to add extra padding to the bitmap to make room for the glow effect 2269 final Canvas canvas = new Canvas(); 2270 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2271 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 2272 2273 // Show the current page outlines to indicate that we can accept this drop 2274 showOutlines(); 2275 layout.setIsDragOccuring(true); 2276 layout.onDragEnter(); 2277 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2278 2279 return true; 2280 } 2281 case DragEvent.ACTION_DRAG_LOCATION: 2282 // Visualize the drop location 2283 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2284 return true; 2285 case DragEvent.ACTION_DROP: { 2286 // Try and add any shortcuts 2287 final LauncherModel model = mLauncher.getModel(); 2288 final ClipData data = event.getClipData(); 2289 2290 // We assume that the mime types are ordered in descending importance of 2291 // representation. So we enumerate the list of mime types and alert the 2292 // user if any widgets can handle the drop. Only the most preferred 2293 // representation will be handled. 2294 pos[0] = x; 2295 pos[1] = y; 2296 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2297 if (test != null) { 2298 final int index = test.first; 2299 final List<WidgetMimeTypeHandlerData> widgets = test.second; 2300 final boolean isShortcut = (widgets == null); 2301 final String mimeType = desc.getMimeType(index); 2302 if (isShortcut) { 2303 final Intent intent = data.getItemAt(index).getIntent(); 2304 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 2305 onDropExternal(x, y, info, layout, false); 2306 } else { 2307 if (widgets.size() == 1) { 2308 // If there is only one item, then go ahead and add and configure 2309 // that widget 2310 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 2311 final PendingAddWidgetInfo createInfo = 2312 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 2313 mLauncher.addAppWidgetFromDrop(createInfo, mCurrentPage, pos); 2314 } else { 2315 // Show the widget picker dialog if there is more than one widget 2316 // that can handle this data type 2317 final InstallWidgetReceiver.WidgetListAdapter adapter = 2318 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 2319 data, widgets, layout, mCurrentPage, pos); 2320 final AlertDialog.Builder builder = 2321 new AlertDialog.Builder(mContext); 2322 builder.setAdapter(adapter, adapter); 2323 builder.setCancelable(true); 2324 builder.setTitle(mContext.getString( 2325 R.string.external_drop_widget_pick_title)); 2326 builder.setIcon(R.drawable.ic_no_applications); 2327 builder.show(); 2328 } 2329 } 2330 } 2331 return true; 2332 } 2333 case DragEvent.ACTION_DRAG_ENDED: 2334 // Hide the page outlines after the drop 2335 layout.setIsDragOccuring(false); 2336 layout.onDragExit(); 2337 hideOutlines(); 2338 return true; 2339 } 2340 return super.onDragEvent(event); 2341 } 2342 2343 /* 2344 * 2345 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2346 * coordinate space. The argument xy is modified with the return result. 2347 * 2348 */ 2349 void mapPointFromSelfToChild(View v, float[] xy) { 2350 mapPointFromSelfToChild(v, xy, null); 2351 } 2352 2353 /* 2354 * 2355 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2356 * coordinate space. The argument xy is modified with the return result. 2357 * 2358 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2359 * computing it itself; we use this to avoid redundant matrix inversions in 2360 * findMatchingPageForDragOver 2361 * 2362 */ 2363 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2364 if (cachedInverseMatrix == null) { 2365 v.getMatrix().invert(mTempInverseMatrix); 2366 cachedInverseMatrix = mTempInverseMatrix; 2367 } 2368 xy[0] = xy[0] + mScrollX - v.getLeft(); 2369 xy[1] = xy[1] + mScrollY - v.getTop(); 2370 cachedInverseMatrix.mapPoints(xy); 2371 } 2372 2373 /* 2374 * 2375 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2376 * the parent View's coordinate space. The argument xy is modified with the return result. 2377 * 2378 */ 2379 void mapPointFromChildToSelf(View v, float[] xy) { 2380 v.getMatrix().mapPoints(xy); 2381 xy[0] -= (mScrollX - v.getLeft()); 2382 xy[1] -= (mScrollY - v.getTop()); 2383 } 2384 2385 static private float squaredDistance(float[] point1, float[] point2) { 2386 float distanceX = point1[0] - point2[0]; 2387 float distanceY = point2[1] - point2[1]; 2388 return distanceX * distanceX + distanceY * distanceY; 2389 } 2390 2391 /* 2392 * 2393 * Returns true if the passed CellLayout cl overlaps with dragView 2394 * 2395 */ 2396 boolean overlaps(CellLayout cl, DragView dragView, 2397 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2398 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2399 final float[] draggedItemTopLeft = mTempDragCoordinates; 2400 draggedItemTopLeft[0] = dragViewX; 2401 draggedItemTopLeft[1] = dragViewY; 2402 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2403 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2404 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2405 2406 // Transform the dragged item's top left coordinates 2407 // to the CellLayout's local coordinates 2408 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2409 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2410 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2411 2412 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2413 // Transform the dragged item's bottom right coordinates 2414 // to the CellLayout's local coordinates 2415 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2416 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2417 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2418 2419 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2420 float overlap = (overlapRegionRight - overlapRegionLeft) * 2421 (overlapRegionBottom - overlapRegionTop); 2422 if (overlap > 0) { 2423 return true; 2424 } 2425 } 2426 } 2427 return false; 2428 } 2429 2430 /* 2431 * 2432 * This method returns the CellLayout that is currently being dragged to. In order to drag 2433 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2434 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2435 * 2436 * Return null if no CellLayout is currently being dragged over 2437 * 2438 */ 2439 private CellLayout findMatchingPageForDragOver( 2440 DragView dragView, int originX, int originY, int offsetX, int offsetY) { 2441 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2442 // with the item being dragged and then choose the one that's closest to the touch point 2443 final int screenCount = getChildCount(); 2444 CellLayout bestMatchingScreen = null; 2445 float smallestDistSoFar = Float.MAX_VALUE; 2446 2447 for (int i = 0; i < screenCount; i++) { 2448 CellLayout cl = (CellLayout)getChildAt(i); 2449 2450 final float[] touchXy = mTempTouchCoordinates; 2451 touchXy[0] = originX + offsetX; 2452 touchXy[1] = originY + offsetY; 2453 2454 // Transform the touch coordinates to the CellLayout's local coordinates 2455 // If the touch point is within the bounds of the cell layout, we can return immediately 2456 cl.getMatrix().invert(mTempInverseMatrix); 2457 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2458 2459 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2460 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2461 return cl; 2462 } 2463 2464 if (overlaps(cl, dragView, originX, originY, mTempInverseMatrix)) { 2465 // Get the center of the cell layout in screen coordinates 2466 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2467 cellLayoutCenter[0] = cl.getWidth()/2; 2468 cellLayoutCenter[1] = cl.getHeight()/2; 2469 mapPointFromChildToSelf(cl, cellLayoutCenter); 2470 2471 touchXy[0] = originX + offsetX; 2472 touchXy[1] = originY + offsetY; 2473 2474 // Calculate the distance between the center of the CellLayout 2475 // and the touch point 2476 float dist = squaredDistance(touchXy, cellLayoutCenter); 2477 2478 if (dist < smallestDistSoFar) { 2479 smallestDistSoFar = dist; 2480 bestMatchingScreen = cl; 2481 } 2482 } 2483 } 2484 return bestMatchingScreen; 2485 } 2486 2487 public void onDragOver(DragSource source, int x, int y, int xOffset, int yOffset, 2488 DragView dragView, Object dragInfo) { 2489 // When touch is inside the scroll area, skip dragOver actions for the current screen 2490 if (!mInScrollArea) { 2491 CellLayout layout; 2492 int originX = x - xOffset; 2493 int originY = y - yOffset; 2494 boolean shrunken = mIsSmall || mIsInUnshrinkAnimation; 2495 if (shrunken) { 2496 mLastDragView = dragView; 2497 mLastDragOriginX = originX; 2498 mLastDragOriginY = originY; 2499 mLastDragXOffset = xOffset; 2500 mLastDragYOffset = yOffset; 2501 layout = findMatchingPageForDragOver(dragView, originX, originY, xOffset, yOffset); 2502 2503 if (layout != mDragTargetLayout) { 2504 if (mDragTargetLayout != null) { 2505 mDragTargetLayout.setIsDragOverlapping(false); 2506 mSpringLoadedDragController.onDragExit(); 2507 } 2508 mDragTargetLayout = layout; 2509 if (mDragTargetLayout != null && mDragTargetLayout.getAcceptsDrops()) { 2510 mDragTargetLayout.setIsDragOverlapping(true); 2511 mSpringLoadedDragController.onDragEnter( 2512 mDragTargetLayout, mShrinkState == ShrinkState.SPRING_LOADED); 2513 } 2514 } 2515 } else { 2516 layout = getCurrentDropLayout(); 2517 if (layout != mDragTargetLayout) { 2518 if (mDragTargetLayout != null) { 2519 mDragTargetLayout.onDragExit(); 2520 } 2521 layout.onDragEnter(); 2522 mDragTargetLayout = layout; 2523 } 2524 } 2525 if (!shrunken || mShrinkState == ShrinkState.SPRING_LOADED) { 2526 layout = getCurrentDropLayout(); 2527 2528 final ItemInfo item = (ItemInfo)dragInfo; 2529 if (dragInfo instanceof LauncherAppWidgetInfo) { 2530 LauncherAppWidgetInfo widgetInfo = (LauncherAppWidgetInfo)dragInfo; 2531 2532 if (widgetInfo.spanX == -1) { 2533 // Calculate the grid spans needed to fit this widget 2534 int[] spans = layout.rectToCell( 2535 widgetInfo.minWidth, widgetInfo.minHeight, null); 2536 item.spanX = spans[0]; 2537 item.spanY = spans[1]; 2538 } 2539 } 2540 2541 if (source instanceof AllAppsPagedView) { 2542 // This is a hack to fix the point used to determine which cell an icon from 2543 // the all apps screen is over 2544 if (item != null && item.spanX == 1 && layout != null) { 2545 int dragRegionLeft = (dragView.getWidth() - layout.getCellWidth()) / 2; 2546 2547 originX += dragRegionLeft - dragView.getDragRegionLeft(); 2548 if (dragView.getDragRegionWidth() != layout.getCellWidth()) { 2549 dragView.setDragRegion(dragView.getDragRegionLeft(), 2550 dragView.getDragRegionTop(), 2551 layout.getCellWidth(), 2552 dragView.getDragRegionHeight()); 2553 } 2554 } 2555 } else if (source == this) { 2556 // When dragging from the workspace, the drag view is slightly bigger than 2557 // the original view, and offset vertically. Adjust to account for this. 2558 final View origView = mDragInfo.cell; 2559 originX += (dragView.getMeasuredWidth() - origView.getWidth()) / 2; 2560 originY += (dragView.getMeasuredHeight() - origView.getHeight()) / 2 2561 + dragView.getOffsetY(); 2562 } 2563 2564 if (mDragTargetLayout != null) { 2565 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2566 float[] localOrigin = { originX, originY }; 2567 mapPointFromSelfToChild(mDragTargetLayout, localOrigin, null); 2568 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2569 (int) localOrigin[0], (int) localOrigin[1], item.spanX, item.spanY); 2570 } 2571 } 2572 } 2573 } 2574 2575 private void doDragExit() { 2576 mWasSpringLoadedOnDragExit = mShrinkState == ShrinkState.SPRING_LOADED; 2577 if (mDragTargetLayout != null) { 2578 mDragTargetLayout.onDragExit(); 2579 } 2580 if (!mIsPageMoving) { 2581 hideOutlines(); 2582 } 2583 if (mShrinkState == ShrinkState.SPRING_LOADED) { 2584 mLauncher.exitSpringLoadedDragMode(); 2585 } 2586 clearAllHovers(); 2587 } 2588 2589 public void onDragExit(DragSource source, int x, int y, int xOffset, 2590 int yOffset, DragView dragView, Object dragInfo) { 2591 doDragExit(); 2592 } 2593 2594 @Override 2595 public void getHitRect(Rect outRect) { 2596 // We want the workspace to have the whole area of the display (it will find the correct 2597 // cell layout to drop to in the existing drag/drop logic. 2598 final Display d = mLauncher.getWindowManager().getDefaultDisplay(); 2599 outRect.set(0, 0, d.getWidth(), d.getHeight()); 2600 } 2601 2602 /** 2603 * Add the item specified by dragInfo to the given layout. 2604 * @return true if successful 2605 */ 2606 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2607 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2608 onDropExternal(-1, -1, (ItemInfo) dragInfo, (CellLayout) layout, false); 2609 return true; 2610 } 2611 mLauncher.showOutOfSpaceMessage(); 2612 return false; 2613 } 2614 2615 /** 2616 * Drop an item that didn't originate on one of the workspace screens. 2617 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2618 * come from another app altogether. 2619 * 2620 * NOTE: This can also be called when we are outside of a drag event, when we want 2621 * to add an item to one of the workspace screens. 2622 */ 2623 private void onDropExternal(int x, int y, Object dragInfo, 2624 CellLayout cellLayout, boolean insertAtFirst) { 2625 int screen = indexOfChild(cellLayout); 2626 if (dragInfo instanceof PendingAddItemInfo) { 2627 PendingAddItemInfo info = (PendingAddItemInfo) dragInfo; 2628 // When dragging and dropping from customization tray, we deal with creating 2629 // widgets/shortcuts/folders in a slightly different way 2630 // Only set touchXY if you are supporting spring loaded adding of items 2631 int[] touchXY = new int[2]; 2632 touchXY[0] = x; 2633 touchXY[1] = y; 2634 switch (info.itemType) { 2635 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 2636 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) info, screen, touchXY); 2637 break; 2638 case LauncherSettings.Favorites.ITEM_TYPE_LIVE_FOLDER: 2639 mLauncher.addLiveFolderFromDrop(info.componentName, screen, touchXY); 2640 break; 2641 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2642 mLauncher.processShortcutFromDrop(info.componentName, screen, touchXY); 2643 break; 2644 default: 2645 throw new IllegalStateException("Unknown item type: " + info.itemType); 2646 } 2647 cellLayout.onDragExit(); 2648 } else { 2649 // This is for other drag/drop cases, like dragging from All Apps 2650 ItemInfo info = (ItemInfo) dragInfo; 2651 View view = null; 2652 2653 switch (info.itemType) { 2654 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 2655 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2656 if (info.container == NO_ID && info instanceof ApplicationInfo) { 2657 // Came from all apps -- make a copy 2658 info = new ShortcutInfo((ApplicationInfo) info); 2659 } 2660 view = mLauncher.createShortcut(R.layout.application, cellLayout, 2661 (ShortcutInfo) info); 2662 break; 2663 case LauncherSettings.Favorites.ITEM_TYPE_USER_FOLDER: 2664 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, 2665 cellLayout, (UserFolderInfo) info, mIconCache); 2666 break; 2667 default: 2668 throw new IllegalStateException("Unknown item type: " + info.itemType); 2669 } 2670 2671 mTargetCell = new int[2]; 2672 if (x != -1 && y != -1) { 2673 // when dragging and dropping, just find the closest free spot 2674 cellLayout.findNearestVacantArea(x, y, 1, 1, mTargetCell); 2675 } else { 2676 cellLayout.findCellForSpan(mTargetCell, 1, 1); 2677 } 2678 addInScreen(view, indexOfChild(cellLayout), mTargetCell[0], 2679 mTargetCell[1], info.spanX, info.spanY, insertAtFirst); 2680 boolean animateDrop = !mWasSpringLoadedOnDragExit; 2681 cellLayout.onDropChild(view, animateDrop); 2682 cellLayout.animateDrop(); 2683 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2684 2685 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 2686 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2687 lp.cellX, lp.cellY); 2688 } 2689 } 2690 2691 /** 2692 * Return the current {@link CellLayout}, correctly picking the destination 2693 * screen while a scroll is in progress. 2694 */ 2695 private CellLayout getCurrentDropLayout() { 2696 // if we're currently small, use findMatchingPageForDragOver instead 2697 if (mIsSmall) return null; 2698 int index = mScroller.isFinished() ? mCurrentPage : mNextPage; 2699 return (CellLayout) getChildAt(index); 2700 } 2701 2702 /** 2703 * Return the current CellInfo describing our current drag; this method exists 2704 * so that Launcher can sync this object with the correct info when the activity is created/ 2705 * destroyed 2706 * 2707 */ 2708 public CellLayout.CellInfo getDragInfo() { 2709 return mDragInfo; 2710 } 2711 2712 /** 2713 * Calculate the nearest cell where the given object would be dropped. 2714 */ 2715 private int[] findNearestVacantArea(int pixelX, int pixelY, 2716 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 2717 2718 int localPixelX = pixelX - (layout.getLeft() - mScrollX); 2719 int localPixelY = pixelY - (layout.getTop() - mScrollY); 2720 2721 // Find the best target drop location 2722 return layout.findNearestVacantArea( 2723 localPixelX, localPixelY, spanX, spanY, ignoreView, recycle); 2724 } 2725 2726 void setLauncher(Launcher launcher) { 2727 mLauncher = launcher; 2728 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 2729 2730 mCustomizationDrawer = mLauncher.findViewById(R.id.customization_drawer); 2731 if (mCustomizationDrawer != null) { 2732 mCustomizationDrawerContent = 2733 mCustomizationDrawer.findViewById(com.android.internal.R.id.tabcontent); 2734 } 2735 } 2736 2737 public void setDragController(DragController dragController) { 2738 mDragController = dragController; 2739 } 2740 2741 /** 2742 * Called at the end of a drag which originated on the workspace. 2743 */ 2744 public void onDropCompleted(View target, boolean success) { 2745 if (success) { 2746 if (target != this && mDragInfo != null) { 2747 final CellLayout cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 2748 cellLayout.removeView(mDragInfo.cell); 2749 if (mDragInfo.cell instanceof DropTarget) { 2750 mDragController.removeDropTarget((DropTarget)mDragInfo.cell); 2751 } 2752 // final Object tag = mDragInfo.cell.getTag(); 2753 } 2754 } else if (mDragInfo != null) { 2755 // NOTE: When 'success' is true, onDragExit is called by the DragController before 2756 // calling onDropCompleted(). We call it ourselves here, but maybe this should be 2757 // moved into DragController.cancelDrag(). 2758 doDragExit(); 2759 ((CellLayout) getChildAt(mDragInfo.screen)).onDropChild(mDragInfo.cell, false); 2760 } 2761 mLauncher.unlockScreenOrientation(); 2762 mDragOutline = null; 2763 mDragInfo = null; 2764 } 2765 2766 @Override 2767 public void onDragViewVisible() { 2768 ((View) mDragInfo.cell).setVisibility(View.GONE); 2769 } 2770 2771 public boolean isDropEnabled() { 2772 return true; 2773 } 2774 2775 @Override 2776 protected void onRestoreInstanceState(Parcelable state) { 2777 super.onRestoreInstanceState(state); 2778 Launcher.setScreen(mCurrentPage); 2779 } 2780 2781 @Override 2782 public void scrollLeft() { 2783 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2784 super.scrollLeft(); 2785 } 2786 } 2787 2788 @Override 2789 public void scrollRight() { 2790 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2791 super.scrollRight(); 2792 } 2793 } 2794 2795 @Override 2796 public void onEnterScrollArea(int direction) { 2797 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2798 mInScrollArea = true; 2799 mPendingScrollDirection = direction; 2800 2801 final int page = mCurrentPage + (direction == DragController.SCROLL_LEFT ? -1 : 1); 2802 final CellLayout layout = (CellLayout) getChildAt(page); 2803 2804 if (layout != null) { 2805 layout.setIsDragOverlapping(true); 2806 2807 if (mDragTargetLayout != null) { 2808 mDragTargetLayout.onDragExit(); 2809 mDragTargetLayout = null; 2810 } 2811 } 2812 } 2813 } 2814 2815 private void clearAllHovers() { 2816 final int childCount = getChildCount(); 2817 for (int i = 0; i < childCount; i++) { 2818 ((CellLayout) getChildAt(i)).setIsDragOverlapping(false); 2819 } 2820 mSpringLoadedDragController.onDragExit(); 2821 } 2822 2823 @Override 2824 public void onExitScrollArea() { 2825 if (mInScrollArea) { 2826 mInScrollArea = false; 2827 mPendingScrollDirection = DragController.SCROLL_NONE; 2828 clearAllHovers(); 2829 } 2830 } 2831 2832 public Folder getFolderForTag(Object tag) { 2833 final int screenCount = getChildCount(); 2834 for (int screen = 0; screen < screenCount; screen++) { 2835 ViewGroup currentScreen = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 2836 int count = currentScreen.getChildCount(); 2837 for (int i = 0; i < count; i++) { 2838 View child = currentScreen.getChildAt(i); 2839 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 2840 if (lp.cellHSpan == 4 && lp.cellVSpan == 4 && child instanceof Folder) { 2841 Folder f = (Folder) child; 2842 if (f.getInfo() == tag && f.getInfo().opened) { 2843 return f; 2844 } 2845 } 2846 } 2847 } 2848 return null; 2849 } 2850 2851 public View getViewForTag(Object tag) { 2852 int screenCount = getChildCount(); 2853 for (int screen = 0; screen < screenCount; screen++) { 2854 ViewGroup currentScreen = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 2855 int count = currentScreen.getChildCount(); 2856 for (int i = 0; i < count; i++) { 2857 View child = currentScreen.getChildAt(i); 2858 if (child.getTag() == tag) { 2859 return child; 2860 } 2861 } 2862 } 2863 return null; 2864 } 2865 2866 2867 void removeItems(final ArrayList<ApplicationInfo> apps) { 2868 final int screenCount = getChildCount(); 2869 final PackageManager manager = getContext().getPackageManager(); 2870 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 2871 2872 final HashSet<String> packageNames = new HashSet<String>(); 2873 final int appCount = apps.size(); 2874 for (int i = 0; i < appCount; i++) { 2875 packageNames.add(apps.get(i).componentName.getPackageName()); 2876 } 2877 2878 for (int i = 0; i < screenCount; i++) { 2879 final CellLayout layoutParent = (CellLayout) getChildAt(i); 2880 final ViewGroup layout = layoutParent.getChildrenLayout(); 2881 2882 // Avoid ANRs by treating each screen separately 2883 post(new Runnable() { 2884 public void run() { 2885 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 2886 childrenToRemove.clear(); 2887 2888 int childCount = layout.getChildCount(); 2889 for (int j = 0; j < childCount; j++) { 2890 final View view = layout.getChildAt(j); 2891 Object tag = view.getTag(); 2892 2893 if (tag instanceof ShortcutInfo) { 2894 final ShortcutInfo info = (ShortcutInfo) tag; 2895 final Intent intent = info.intent; 2896 final ComponentName name = intent.getComponent(); 2897 2898 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 2899 for (String packageName: packageNames) { 2900 if (packageName.equals(name.getPackageName())) { 2901 LauncherModel.deleteItemFromDatabase(mLauncher, info); 2902 childrenToRemove.add(view); 2903 } 2904 } 2905 } 2906 } else if (tag instanceof UserFolderInfo) { 2907 final UserFolderInfo info = (UserFolderInfo) tag; 2908 final ArrayList<ShortcutInfo> contents = info.contents; 2909 final ArrayList<ShortcutInfo> toRemove = new ArrayList<ShortcutInfo>(1); 2910 final int contentsCount = contents.size(); 2911 boolean removedFromFolder = false; 2912 2913 for (int k = 0; k < contentsCount; k++) { 2914 final ShortcutInfo appInfo = contents.get(k); 2915 final Intent intent = appInfo.intent; 2916 final ComponentName name = intent.getComponent(); 2917 2918 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 2919 for (String packageName: packageNames) { 2920 if (packageName.equals(name.getPackageName())) { 2921 toRemove.add(appInfo); 2922 LauncherModel.deleteItemFromDatabase(mLauncher, appInfo); 2923 removedFromFolder = true; 2924 } 2925 } 2926 } 2927 } 2928 2929 contents.removeAll(toRemove); 2930 if (removedFromFolder) { 2931 final Folder folder = getOpenFolder(); 2932 if (folder != null) 2933 folder.notifyDataSetChanged(); 2934 } 2935 } else if (tag instanceof LiveFolderInfo) { 2936 final LiveFolderInfo info = (LiveFolderInfo) tag; 2937 final Uri uri = info.uri; 2938 final ProviderInfo providerInfo = manager.resolveContentProvider( 2939 uri.getAuthority(), 0); 2940 2941 if (providerInfo != null) { 2942 for (String packageName: packageNames) { 2943 if (packageName.equals(providerInfo.packageName)) { 2944 LauncherModel.deleteItemFromDatabase(mLauncher, info); 2945 childrenToRemove.add(view); 2946 } 2947 } 2948 } 2949 } else if (tag instanceof LauncherAppWidgetInfo) { 2950 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 2951 final AppWidgetProviderInfo provider = 2952 widgets.getAppWidgetInfo(info.appWidgetId); 2953 if (provider != null) { 2954 for (String packageName: packageNames) { 2955 if (packageName.equals(provider.provider.getPackageName())) { 2956 LauncherModel.deleteItemFromDatabase(mLauncher, info); 2957 childrenToRemove.add(view); 2958 } 2959 } 2960 } 2961 } 2962 } 2963 2964 childCount = childrenToRemove.size(); 2965 for (int j = 0; j < childCount; j++) { 2966 View child = childrenToRemove.get(j); 2967 // Note: We can not remove the view directly from CellLayoutChildren as this 2968 // does not re-mark the spaces as unoccupied. 2969 layoutParent.removeViewInLayout(child); 2970 if (child instanceof DropTarget) { 2971 mDragController.removeDropTarget((DropTarget)child); 2972 } 2973 } 2974 2975 if (childCount > 0) { 2976 layout.requestLayout(); 2977 layout.invalidate(); 2978 } 2979 } 2980 }); 2981 } 2982 } 2983 2984 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 2985 final int screenCount = getChildCount(); 2986 for (int i = 0; i < screenCount; i++) { 2987 final ViewGroup layout = ((CellLayout) getChildAt(i)).getChildrenLayout(); 2988 int childCount = layout.getChildCount(); 2989 for (int j = 0; j < childCount; j++) { 2990 final View view = layout.getChildAt(j); 2991 Object tag = view.getTag(); 2992 if (tag instanceof ShortcutInfo) { 2993 ShortcutInfo info = (ShortcutInfo)tag; 2994 // We need to check for ACTION_MAIN otherwise getComponent() might 2995 // return null for some shortcuts (for instance, for shortcuts to 2996 // web pages.) 2997 final Intent intent = info.intent; 2998 final ComponentName name = intent.getComponent(); 2999 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3000 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3001 final int appCount = apps.size(); 3002 for (int k = 0; k < appCount; k++) { 3003 ApplicationInfo app = apps.get(k); 3004 if (app.componentName.equals(name)) { 3005 info.setIcon(mIconCache.getIcon(info.intent)); 3006 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 3007 new FastBitmapDrawable(info.getIcon(mIconCache)), 3008 null, null); 3009 } 3010 } 3011 } 3012 } 3013 } 3014 } 3015 } 3016 3017 void moveToDefaultScreen(boolean animate) { 3018 if (mIsSmall || mIsInUnshrinkAnimation) { 3019 mLauncher.showWorkspace(animate, (CellLayout)getChildAt(mDefaultPage)); 3020 } else if (animate) { 3021 snapToPage(mDefaultPage); 3022 } else { 3023 setCurrentPage(mDefaultPage); 3024 } 3025 getChildAt(mDefaultPage).requestFocus(); 3026 } 3027 3028 void setIndicators(Drawable previous, Drawable next) { 3029 mPreviousIndicator = previous; 3030 mNextIndicator = next; 3031 previous.setLevel(mCurrentPage); 3032 next.setLevel(mCurrentPage); 3033 } 3034 3035 @Override 3036 public void syncPages() { 3037 } 3038 3039 @Override 3040 public void syncPageItems(int page) { 3041 } 3042 3043} 3044