Workspace.java revision a669d79d0dcf034651ce305a8cd334272bec3374
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.launcher2; 18 19import java.util.ArrayList; 20import java.util.HashSet; 21import java.util.List; 22 23import android.animation.Animator; 24import android.animation.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.animation.DecelerateInterpolator; 64import android.widget.TextView; 65import android.widget.Toast; 66 67import com.android.launcher.R; 68import com.android.launcher2.InstallWidgetReceiver.WidgetMimeTypeHandlerData; 69 70/** 71 * The workspace is a wide area with a wallpaper and a finite number of pages. 72 * Each page contains a number of icons, folders or widgets the user can 73 * interact with. A workspace is meant to be used with a fixed width only. 74 */ 75public class Workspace extends SmoothPagedView 76 implements DropTarget, DragSource, DragScroller, View.OnTouchListener { 77 @SuppressWarnings({"UnusedDeclaration"}) 78 private static final String TAG = "Launcher.Workspace"; 79 80 // This is how much the workspace shrinks when we enter all apps or 81 // customization mode 82 private static final float SHRINK_FACTOR = 0.16f; 83 84 // Y rotation to apply to the workspace screens 85 private static final float WORKSPACE_ROTATION = 12.5f; 86 private static final float WORKSPACE_TRANSLATION = 50.0f; 87 88 // These are extra scale factors to apply to the mini home screens 89 // so as to achieve the desired transform 90 private static final float EXTRA_SCALE_FACTOR_0 = 0.972f; 91 private static final float EXTRA_SCALE_FACTOR_1 = 1.0f; 92 private static final float EXTRA_SCALE_FACTOR_2 = 1.10f; 93 94 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 95 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 96 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 97 98 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 99 private static final int BACKGROUND_FADE_IN_DURATION = 350; 100 101 // These animators are used to fade the children's outlines 102 private ObjectAnimator mChildrenOutlineFadeInAnimation; 103 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 104 private float mChildrenOutlineAlpha = 0; 105 106 // These properties refer to the background protection gradient used for AllApps and Customize 107 private ObjectAnimator mBackgroundFadeInAnimation; 108 private ObjectAnimator mBackgroundFadeOutAnimation; 109 private Drawable mBackground; 110 private float mBackgroundAlpha = 0; 111 private float mOverScrollMaxBackgroundAlpha = 0.0f; 112 113 private final WallpaperManager mWallpaperManager; 114 115 private int mDefaultPage; 116 117 private boolean mPageMoving = false; 118 119 /** 120 * CellInfo for the cell that is currently being dragged 121 */ 122 private CellLayout.CellInfo mDragInfo; 123 124 /** 125 * Target drop area calculated during last acceptDrop call. 126 */ 127 private int[] mTargetCell = null; 128 129 /** 130 * The CellLayout that is currently being dragged over 131 */ 132 private CellLayout mDragTargetLayout = null; 133 134 private Launcher mLauncher; 135 private IconCache mIconCache; 136 private DragController mDragController; 137 138 // These are temporary variables to prevent having to allocate a new object just to 139 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 140 private int[] mTempCell = new int[2]; 141 private int[] mTempEstimate = new int[2]; 142 private float[] mTempOriginXY = new float[2]; 143 private float[] mTempDragCoordinates = new float[2]; 144 private float[] mTempTouchCoordinates = new float[2]; 145 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 146 private float[] mTempDragBottomRightCoordinates = new float[2]; 147 private Matrix mTempInverseMatrix = new Matrix(); 148 149 private static final int DEFAULT_CELL_COUNT_X = 4; 150 private static final int DEFAULT_CELL_COUNT_Y = 4; 151 152 private Drawable mPreviousIndicator; 153 private Drawable mNextIndicator; 154 155 // State variable that indicates whether the pages are small (ie when you're 156 // in all apps or customize mode) 157 private boolean mIsSmall = false; 158 private boolean mIsInUnshrinkAnimation = false; 159 private AnimatorListener mUnshrinkAnimationListener; 160 private enum ShrinkPosition { 161 SHRINK_TO_TOP, SHRINK_TO_MIDDLE, SHRINK_TO_BOTTOM_HIDDEN, SHRINK_TO_BOTTOM_VISIBLE }; 162 private ShrinkPosition mShrunkenState; 163 private boolean mWaitingToShrink = false; 164 private ShrinkPosition mWaitingToShrinkPosition; 165 private AnimatorSet mAnimator; 166 167 /** Is the user is dragging an item near the edge of a page? */ 168 private boolean mInScrollArea = false; 169 170 /** If mInScrollArea is true, the direction of the scroll. */ 171 private int mPendingScrollDirection = DragController.SCROLL_NONE; 172 173 private boolean mInDragMode = false; 174 175 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 176 private Bitmap mDragOutline = null; 177 private final Rect mTempRect = new Rect(); 178 private final int[] mTempXY = new int[2]; 179 180 private ValueAnimator mDropAnim = null; 181 private TimeInterpolator mQuintEaseOutInterpolator = new DecelerateInterpolator(2.5f); 182 private View mDropView = null; 183 private int[] mDropViewPos = new int[] { -1, -1 }; 184 185 // Paint used to draw external drop outline 186 private final Paint mExternalDragOutlinePaint = new Paint(); 187 188 /** Used to trigger an animation as soon as the workspace stops scrolling. */ 189 private Animator mAnimOnPageEndMoving = null; 190 191 // Camera and Matrix used to determine the final position of a neighboring CellLayout 192 private final Matrix mMatrix = new Matrix(); 193 private final Camera mCamera = new Camera(); 194 private final float mTempFloat2[] = new float[2]; 195 196 /** 197 * Used to inflate the Workspace from XML. 198 * 199 * @param context The application's context. 200 * @param attrs The attributes set containing the Workspace's customization values. 201 */ 202 public Workspace(Context context, AttributeSet attrs) { 203 this(context, attrs, 0); 204 } 205 206 /** 207 * Used to inflate the Workspace from XML. 208 * 209 * @param context The application's context. 210 * @param attrs The attributes set containing the Workspace's customization values. 211 * @param defStyle Unused. 212 */ 213 public Workspace(Context context, AttributeSet attrs, int defStyle) { 214 super(context, attrs, defStyle); 215 mContentIsRefreshable = false; 216 217 if (!LauncherApplication.isScreenXLarge()) { 218 mFadeInAdjacentScreens = false; 219 } 220 221 mWallpaperManager = WallpaperManager.getInstance(context); 222 223 TypedArray a = context.obtainStyledAttributes(attrs, 224 R.styleable.Workspace, defStyle, 0); 225 int cellCountX = a.getInt(R.styleable.Workspace_cellCountX, DEFAULT_CELL_COUNT_X); 226 int cellCountY = a.getInt(R.styleable.Workspace_cellCountY, DEFAULT_CELL_COUNT_Y); 227 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 228 a.recycle(); 229 230 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 231 setHapticFeedbackEnabled(false); 232 233 initWorkspace(); 234 } 235 236 /** 237 * Initializes various states for this workspace. 238 */ 239 protected void initWorkspace() { 240 Context context = getContext(); 241 mCurrentPage = mDefaultPage; 242 Launcher.setScreen(mCurrentPage); 243 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 244 mIconCache = app.getIconCache(); 245 mExternalDragOutlinePaint.setAntiAlias(true); 246 setWillNotDraw(false); 247 248 try { 249 final Resources res = getResources(); 250 mBackground = res.getDrawable(R.drawable.all_apps_bg_gradient); 251 } catch (Resources.NotFoundException e) { 252 // In this case, we will skip drawing background protection 253 } 254 255 mUnshrinkAnimationListener = new LauncherAnimatorListenerAdapter() { 256 @Override 257 public void onAnimationStart(Animator animation) { 258 mIsInUnshrinkAnimation = true; 259 } 260 @Override 261 public void onAnimationEndOrCancel(Animator animation) { 262 mIsInUnshrinkAnimation = false; 263 } 264 }; 265 mSnapVelocity = 600; 266 } 267 268 @Override 269 protected int getScrollMode() { 270 if (LauncherApplication.isScreenXLarge()) { 271 return SmoothPagedView.QUINTIC_MODE; 272 } else { 273 return SmoothPagedView.OVERSHOOT_MODE; 274 } 275 } 276 277 @Override 278 public void addView(View child, int index, LayoutParams params) { 279 if (!(child instanceof CellLayout)) { 280 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 281 } 282 ((CellLayout) child).setOnInterceptTouchListener(this); 283 super.addView(child, index, params); 284 } 285 286 @Override 287 public void addView(View child) { 288 if (!(child instanceof CellLayout)) { 289 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 290 } 291 ((CellLayout) child).setOnInterceptTouchListener(this); 292 super.addView(child); 293 } 294 295 @Override 296 public void addView(View child, int index) { 297 if (!(child instanceof CellLayout)) { 298 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 299 } 300 ((CellLayout) child).setOnInterceptTouchListener(this); 301 super.addView(child, index); 302 } 303 304 @Override 305 public void addView(View child, int width, int height) { 306 if (!(child instanceof CellLayout)) { 307 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 308 } 309 ((CellLayout) child).setOnInterceptTouchListener(this); 310 super.addView(child, width, height); 311 } 312 313 @Override 314 public void addView(View child, LayoutParams params) { 315 if (!(child instanceof CellLayout)) { 316 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 317 } 318 ((CellLayout) child).setOnInterceptTouchListener(this); 319 super.addView(child, params); 320 } 321 322 /** 323 * @return The open folder on the current screen, or null if there is none 324 */ 325 Folder getOpenFolder() { 326 CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 327 int count = currentPage.getChildCount(); 328 for (int i = 0; i < count; i++) { 329 View child = currentPage.getChildAt(i); 330 if (child instanceof Folder) { 331 Folder folder = (Folder) child; 332 if (folder.getInfo().opened) 333 return folder; 334 } 335 } 336 return null; 337 } 338 339 ArrayList<Folder> getOpenFolders() { 340 final int screenCount = getChildCount(); 341 ArrayList<Folder> folders = new ArrayList<Folder>(screenCount); 342 343 for (int screen = 0; screen < screenCount; screen++) { 344 CellLayout currentPage = (CellLayout) getChildAt(screen); 345 int count = currentPage.getChildCount(); 346 for (int i = 0; i < count; i++) { 347 View child = currentPage.getChildAt(i); 348 if (child instanceof Folder) { 349 Folder folder = (Folder) child; 350 if (folder.getInfo().opened) 351 folders.add(folder); 352 break; 353 } 354 } 355 } 356 return folders; 357 } 358 359 boolean isDefaultPageShowing() { 360 return mCurrentPage == mDefaultPage; 361 } 362 363 /** 364 * Sets the current screen. 365 * 366 * @param currentPage 367 */ 368 @Override 369 void setCurrentPage(int currentPage) { 370 super.setCurrentPage(currentPage); 371 updateWallpaperOffset(mScrollX); 372 } 373 374 /** 375 * Adds the specified child in the specified screen. The position and dimension of 376 * the child are defined by x, y, spanX and spanY. 377 * 378 * @param child The child to add in one of the workspace's screens. 379 * @param screen The screen in which to add the child. 380 * @param x The X position of the child in the screen's grid. 381 * @param y The Y position of the child in the screen's grid. 382 * @param spanX The number of cells spanned horizontally by the child. 383 * @param spanY The number of cells spanned vertically by the child. 384 */ 385 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY) { 386 addInScreen(child, screen, x, y, spanX, spanY, false); 387 } 388 389 void addInFullScreen(View child, int screen) { 390 addInScreen(child, screen, 0, 0, -1, -1); 391 } 392 393 /** 394 * Adds the specified child in the specified screen. The position and dimension of 395 * the child are defined by x, y, spanX and spanY. 396 * 397 * @param child The child to add in one of the workspace's screens. 398 * @param screen The screen in which to add the child. 399 * @param x The X position of the child in the screen's grid. 400 * @param y The Y position of the child in the screen's grid. 401 * @param spanX The number of cells spanned horizontally by the child. 402 * @param spanY The number of cells spanned vertically by the child. 403 * @param insert When true, the child is inserted at the beginning of the children list. 404 */ 405 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY, boolean insert) { 406 if (screen < 0 || screen >= getChildCount()) { 407 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 408 + " (was " + screen + "); skipping child"); 409 return; 410 } 411 412 final CellLayout group = (CellLayout) getChildAt(screen); 413 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 414 if (lp == null) { 415 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 416 } else { 417 lp.cellX = x; 418 lp.cellY = y; 419 lp.cellHSpan = spanX; 420 lp.cellVSpan = spanY; 421 } 422 423 // Get the canonical child id to uniquely represent this view in this screen 424 int childId = LauncherModel.getCellLayoutChildId(-1, screen, x, y, spanX, spanY); 425 boolean markCellsAsOccupied = !(child instanceof Folder); 426 if (!group.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 427 // TODO: This branch occurs when the workspace is adding views 428 // outside of the defined grid 429 // maybe we should be deleting these items from the LauncherModel? 430 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 431 } 432 433 if (!(child instanceof Folder)) { 434 child.setHapticFeedbackEnabled(false); 435 child.setOnLongClickListener(mLongClickListener); 436 } 437 if (child instanceof DropTarget) { 438 mDragController.addDropTarget((DropTarget) child); 439 } 440 } 441 442 public boolean onTouch(View v, MotionEvent event) { 443 // this is an intercepted event being forwarded from a cell layout 444 if (mIsSmall || mIsInUnshrinkAnimation) { 445 // Only allow clicks on a CellLayout if it is visible 446 if (mShrunkenState != ShrinkPosition.SHRINK_TO_BOTTOM_HIDDEN) { 447 mLauncher.onWorkspaceClick((CellLayout) v); 448 } 449 return true; 450 } else if (!mPageMoving) { 451 if (v == getChildAt(mCurrentPage - 1)) { 452 snapToPage(mCurrentPage - 1); 453 return true; 454 } else if (v == getChildAt(mCurrentPage + 1)) { 455 snapToPage(mCurrentPage + 1); 456 return true; 457 } 458 } 459 return false; 460 } 461 462 protected void onWindowVisibilityChanged (int visibility) { 463 mLauncher.onWindowVisibilityChanged(visibility); 464 } 465 466 @Override 467 public boolean dispatchUnhandledMove(View focused, int direction) { 468 if (mIsSmall || mIsInUnshrinkAnimation) { 469 // when the home screens are shrunken, shouldn't allow side-scrolling 470 return false; 471 } 472 return super.dispatchUnhandledMove(focused, direction); 473 } 474 475 @Override 476 public boolean onInterceptTouchEvent(MotionEvent ev) { 477 if (mIsSmall || mIsInUnshrinkAnimation) { 478 if (mLauncher.isAllAppsVisible() && 479 mShrunkenState == ShrinkPosition.SHRINK_TO_BOTTOM_HIDDEN) { 480 // Intercept this event so we can show the workspace in full view 481 // when it is clicked on and it is small 482 return true; 483 } 484 return false; 485 } 486 return super.onInterceptTouchEvent(ev); 487 } 488 489 @Override 490 protected void determineScrollingStart(MotionEvent ev) { 491 if (!mIsSmall && !mIsInUnshrinkAnimation) super.determineScrollingStart(ev); 492 } 493 494 protected void onPageBeginMoving() { 495 if (mNextPage != INVALID_PAGE) { 496 // we're snapping to a particular screen 497 enableChildrenCache(mCurrentPage, mNextPage); 498 } else { 499 // this is when user is actively dragging a particular screen, they might 500 // swipe it either left or right (but we won't advance by more than one screen) 501 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 502 } 503 showOutlines(); 504 mPageMoving = true; 505 } 506 507 protected void onPageEndMoving() { 508 clearChildrenCache(); 509 // Hide the outlines, as long as we're not dragging 510 if (!mDragController.dragging()) { 511 hideOutlines(); 512 } 513 // Check for an animation that's waiting to be started 514 if (mAnimOnPageEndMoving != null) { 515 mAnimOnPageEndMoving.start(); 516 mAnimOnPageEndMoving = null; 517 } 518 mOverScrollMaxBackgroundAlpha = 0.0f; 519 mPageMoving = false; 520 } 521 522 @Override 523 protected void notifyPageSwitchListener() { 524 super.notifyPageSwitchListener(); 525 526 if (mPreviousIndicator != null) { 527 // if we know the next page, we show the indication for it right away; it looks 528 // weird if the indicators are lagging 529 int page = mNextPage; 530 if (page == INVALID_PAGE) { 531 page = mCurrentPage; 532 } 533 mPreviousIndicator.setLevel(page); 534 mNextIndicator.setLevel(page); 535 } 536 Launcher.setScreen(mCurrentPage); 537 }; 538 539 private void updateWallpaperOffset() { 540 updateWallpaperOffset(getChildAt(getChildCount() - 1).getRight() - (mRight - mLeft)); 541 } 542 543 private void updateWallpaperOffset(int scrollRange) { 544 final boolean isStaticWallpaper = (mWallpaperManager != null) && 545 (mWallpaperManager.getWallpaperInfo() == null); 546 if (LauncherApplication.isScreenXLarge() && !isStaticWallpaper) { 547 IBinder token = getWindowToken(); 548 if (token != null) { 549 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 0 ); 550 mWallpaperManager.setWallpaperOffsets(getWindowToken(), 551 Math.max(0.f, Math.min(mScrollX/(float)scrollRange, 1.f)), 0); 552 } 553 } 554 } 555 556 public void showOutlines() { 557 if (!mIsSmall && !mIsInUnshrinkAnimation) { 558 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 559 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 560 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 561 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 562 mChildrenOutlineFadeInAnimation.start(); 563 } 564 } 565 566 public void hideOutlines() { 567 if (!mIsSmall && !mIsInUnshrinkAnimation) { 568 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 569 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 570 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 571 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 572 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 573 mChildrenOutlineFadeOutAnimation.start(); 574 } 575 } 576 577 public void setChildrenOutlineAlpha(float alpha) { 578 mChildrenOutlineAlpha = alpha; 579 for (int i = 0; i < getChildCount(); i++) { 580 CellLayout cl = (CellLayout) getChildAt(i); 581 cl.setBackgroundAlpha(alpha); 582 } 583 } 584 585 public float getChildrenOutlineAlpha() { 586 return mChildrenOutlineAlpha; 587 } 588 589 public void showBackgroundGradient() { 590 if (mBackground == null) return; 591 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 592 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 593 mBackgroundFadeInAnimation = ObjectAnimator.ofFloat(this, "backgroundAlpha", 1.0f); 594 mBackgroundFadeInAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 595 mBackgroundFadeInAnimation.setDuration(BACKGROUND_FADE_IN_DURATION); 596 mBackgroundFadeInAnimation.start(); 597 } 598 599 public void hideBackgroundGradient() { 600 if (mBackground == null) return; 601 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 602 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 603 mBackgroundFadeOutAnimation = ObjectAnimator.ofFloat(this, "backgroundAlpha", 0.0f); 604 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 605 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 606 mBackgroundFadeOutAnimation.start(); 607 } 608 609 public void setBackgroundAlpha(float alpha) { 610 mBackgroundAlpha = alpha; 611 invalidate(); 612 } 613 614 public float getBackgroundAlpha() { 615 return mBackgroundAlpha; 616 } 617 618 /** 619 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 620 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 621 * as being larger. This method computes what offset the rotated view should be translated 622 * in order to minimize this perceived gap. 623 * @param degrees Angle of the view 624 * @param width Width of the view 625 * @param height Height of the view 626 * @return Offset to be used in a View.setTranslationX() call 627 */ 628 private float getOffsetXForRotation(float degrees, int width, int height) { 629 mMatrix.reset(); 630 mCamera.save(); 631 mCamera.rotateY(Math.abs(degrees)); 632 mCamera.getMatrix(mMatrix); 633 mCamera.restore(); 634 635 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 636 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 637 mTempFloat2[0] = width; 638 mTempFloat2[1] = height; 639 mMatrix.mapPoints(mTempFloat2); 640 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 641 } 642 643 float backgroundAlphaInterpolator(float r) { 644 float pivotA = 0.1f; 645 float pivotB = 0.4f; 646 if (r < pivotA) { 647 return 0; 648 } else if (r > pivotB) { 649 return 1.0f; 650 } else { 651 return (r - pivotA)/(pivotB - pivotA); 652 } 653 } 654 655 float overScrollBackgroundAlphaInterpolator(float r) { 656 float threshold = 0.1f; 657 658 if (r > mOverScrollMaxBackgroundAlpha) { 659 mOverScrollMaxBackgroundAlpha = r; 660 } else if (r < mOverScrollMaxBackgroundAlpha) { 661 r = mOverScrollMaxBackgroundAlpha; 662 } 663 664 return Math.min(r / threshold, 1.0f); 665 } 666 667 protected void overScroll(float amount) { 668 final int lastChildIndex = getChildCount() - 1; 669 670 CellLayout cl; 671 if (amount < 0) { 672 cl = (CellLayout) getChildAt(0); 673 } else { 674 cl = (CellLayout) getChildAt(lastChildIndex); 675 } 676 677 final int totalDistance = cl.getMeasuredWidth() + mPageSpacing; 678 float r = 1.0f * amount / totalDistance; 679 float rotation = -WORKSPACE_ROTATION * r; 680 cl.setBackgroundAlphaMultiplier(overScrollBackgroundAlphaInterpolator(Math.abs(r))); 681 cl.setRotationY(rotation); 682 } 683 684 @Override 685 protected void screenScrolled(int screenCenter) { 686 final int halfScreenSize = getMeasuredWidth() / 2; 687 688 for (int i = 0; i < getChildCount(); i++) { 689 CellLayout cl = (CellLayout) getChildAt(i); 690 if (cl != null) { 691 int totalDistance = cl.getMeasuredWidth() + mPageSpacing; 692 int delta = screenCenter - (getChildOffset(i) - 693 getRelativeChildOffset(i) + halfScreenSize); 694 695 float scrollProgress = delta / (totalDistance * 1.0f); 696 scrollProgress = Math.min(scrollProgress, 1.0f); 697 scrollProgress = Math.max(scrollProgress, -1.0f); 698 699 cl.setBackgroundAlphaMultiplier(backgroundAlphaInterpolator(Math.abs(scrollProgress))); 700 701 float rotation = WORKSPACE_ROTATION * scrollProgress; 702 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 703 cl.setTranslationX(translationX); 704 705 cl.setRotationY(rotation); 706 } 707 } 708 } 709 710 protected void onAttachedToWindow() { 711 super.onAttachedToWindow(); 712 computeScroll(); 713 mDragController.setWindowToken(getWindowToken()); 714 } 715 716 @Override 717 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 718 super.onLayout(changed, left, top, right, bottom); 719 720 // if shrinkToBottom() is called on initialization, it has to be deferred 721 // until after the first call to onLayout so that it has the correct width 722 if (mWaitingToShrink) { 723 shrink(mWaitingToShrinkPosition, false); 724 mWaitingToShrink = false; 725 } 726 727 if (LauncherApplication.isInPlaceRotationEnabled()) { 728 // When the device is rotated, the scroll position of the current screen 729 // needs to be refreshed 730 setCurrentPage(getCurrentPage()); 731 } 732 } 733 734 @Override 735 protected void onDraw(Canvas canvas) { 736 // Draw the background gradient if necessary 737 if (mBackground != null && mBackgroundAlpha > 0.0f) { 738 mBackground.setAlpha((int) (mBackgroundAlpha * 255)); 739 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), getMeasuredHeight()); 740 mBackground.draw(canvas); 741 } 742 743 super.onDraw(canvas); 744 } 745 746 @Override 747 protected void dispatchDraw(Canvas canvas) { 748 if (mIsSmall || mIsInUnshrinkAnimation) { 749 // Draw all the workspaces if we're small 750 final int pageCount = getChildCount(); 751 final long drawingTime = getDrawingTime(); 752 for (int i = 0; i < pageCount; i++) { 753 final View page = (View) getChildAt(i); 754 755 drawChild(canvas, page, drawingTime); 756 } 757 } else { 758 super.dispatchDraw(canvas); 759 760 final int width = getWidth(); 761 final int height = getHeight(); 762 763 // In portrait orientation, draw the glowing edge when dragging to adjacent screens 764 if (mInScrollArea && (height > width)) { 765 final int pageHeight = getChildAt(0).getHeight(); 766 767 // This determines the height of the glowing edge: 90% of the page height 768 final int padding = (int) ((height - pageHeight) * 0.5f + pageHeight * 0.1f); 769 770 final CellLayout leftPage = (CellLayout) getChildAt(mCurrentPage - 1); 771 final CellLayout rightPage = (CellLayout) getChildAt(mCurrentPage + 1); 772 773 if (leftPage != null && leftPage.getHover()) { 774 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left); 775 d.setBounds(mScrollX, padding, mScrollX + d.getIntrinsicWidth(), height - padding); 776 d.draw(canvas); 777 } else if (rightPage != null && rightPage.getHover()) { 778 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right); 779 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), padding, mScrollX + width, height - padding); 780 d.draw(canvas); 781 } 782 } 783 784 if (mDropView != null) { 785 // We are animating an item that was just dropped on the home screen. 786 // Render its View in the current animation position. 787 canvas.save(Canvas.MATRIX_SAVE_FLAG); 788 final int xPos = mDropViewPos[0] - mDropView.getScrollX(); 789 final int yPos = mDropViewPos[1] - mDropView.getScrollY(); 790 canvas.translate(xPos, yPos); 791 mDropView.draw(canvas); 792 canvas.restore(); 793 } 794 } 795 } 796 797 @Override 798 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 799 if (!mLauncher.isAllAppsVisible()) { 800 final Folder openFolder = getOpenFolder(); 801 if (openFolder != null) { 802 return openFolder.requestFocus(direction, previouslyFocusedRect); 803 } else { 804 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 805 } 806 } 807 return false; 808 } 809 810 @Override 811 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 812 if (!mLauncher.isAllAppsVisible()) { 813 final Folder openFolder = getOpenFolder(); 814 if (openFolder != null) { 815 openFolder.addFocusables(views, direction); 816 } else { 817 super.addFocusables(views, direction, focusableMode); 818 } 819 } 820 } 821 822 @Override 823 public boolean dispatchTouchEvent(MotionEvent ev) { 824 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 825 // (In XLarge mode, the workspace is shrunken below all apps, and responds to taps 826 // ie when you click on a mini-screen, it zooms back to that screen) 827 if (!LauncherApplication.isScreenXLarge() && mLauncher.isAllAppsVisible()) { 828 return false; 829 } 830 } 831 832 return super.dispatchTouchEvent(ev); 833 } 834 835 void enableChildrenCache(int fromPage, int toPage) { 836 if (fromPage > toPage) { 837 final int temp = fromPage; 838 fromPage = toPage; 839 toPage = temp; 840 } 841 842 final int screenCount = getChildCount(); 843 844 fromPage = Math.max(fromPage, 0); 845 toPage = Math.min(toPage, screenCount - 1); 846 847 for (int i = fromPage; i <= toPage; i++) { 848 final CellLayout layout = (CellLayout) getChildAt(i); 849 layout.setChildrenDrawnWithCacheEnabled(true); 850 layout.setChildrenDrawingCacheEnabled(true); 851 } 852 } 853 854 void clearChildrenCache() { 855 final int screenCount = getChildCount(); 856 for (int i = 0; i < screenCount; i++) { 857 final CellLayout layout = (CellLayout) getChildAt(i); 858 layout.setChildrenDrawnWithCacheEnabled(false); 859 } 860 } 861 862 @Override 863 public boolean onTouchEvent(MotionEvent ev) { 864 if (mLauncher.isAllAppsVisible()) { 865 // Cancel any scrolling that is in progress. 866 if (!mScroller.isFinished()) { 867 mScroller.abortAnimation(); 868 } 869 setCurrentPage(mCurrentPage); 870 871 if (mShrunkenState == ShrinkPosition.SHRINK_TO_BOTTOM_HIDDEN) { 872 mLauncher.showWorkspace(true); 873 // Let the events fall through to the CellLayouts because if they are not 874 // hit, then we get a crash due to a missing ACTION_DOWN touch event 875 } 876 877 return false; // We don't want the events 878 } 879 880 return super.onTouchEvent(ev); 881 } 882 883 public boolean isSmall() { 884 return mIsSmall; 885 } 886 887 void shrinkToTop(boolean animated) { 888 shrink(ShrinkPosition.SHRINK_TO_TOP, animated); 889 } 890 891 void shrinkToMiddle() { 892 shrink(ShrinkPosition.SHRINK_TO_MIDDLE, true); 893 } 894 895 void shrinkToBottomHidden() { 896 shrinkToBottomHidden(true); 897 } 898 899 void shrinkToBottomVisible() { 900 shrinkToBottomVisible(true); 901 } 902 903 void shrinkToBottomHidden(boolean animated) { 904 shrink(ShrinkPosition.SHRINK_TO_BOTTOM_HIDDEN, animated); 905 } 906 907 void shrinkToBottomVisible(boolean animated) { 908 shrink(ShrinkPosition.SHRINK_TO_BOTTOM_VISIBLE, animated); 909 } 910 911 private float getYScaleForScreen(int screen) { 912 int x = Math.abs(screen - 2); 913 914 // TODO: This should be generalized for use with arbitrary rotation angles. 915 switch(x) { 916 case 0: return EXTRA_SCALE_FACTOR_0; 917 case 1: return EXTRA_SCALE_FACTOR_1; 918 case 2: return EXTRA_SCALE_FACTOR_2; 919 } 920 return 1.0f; 921 } 922 923 // we use this to shrink the workspace for the all apps view and the customize view 924 private void shrink(ShrinkPosition shrinkPosition, boolean animated) { 925 showBackgroundGradient(); 926 927 if (mFirstLayout) { 928 // (mFirstLayout == "first layout has not happened yet") 929 // if we get a call to shrink() as part of our initialization (for example, if 930 // Launcher is started in All Apps mode) then we need to wait for a layout call 931 // to get our width so we can layout the mini-screen views correctly 932 mWaitingToShrink = true; 933 mWaitingToShrinkPosition = shrinkPosition; 934 return; 935 } 936 mIsSmall = true; 937 mShrunkenState = shrinkPosition; 938 939 // Stop any scrolling, move to the current page right away 940 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 941 updateWhichPagesAcceptDrops(mShrunkenState); 942 943 // we intercept and reject all touch events when we're small, so be sure to reset the state 944 mTouchState = TOUCH_STATE_REST; 945 mActivePointerId = INVALID_POINTER; 946 947 CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 948 if (currentPage.getBackgroundAlphaMultiplier() < 1.0f) { 949 currentPage.setBackgroundAlpha(0.0f); 950 } 951 currentPage.setBackgroundAlphaMultiplier(1.0f); 952 953 final Resources res = getResources(); 954 final int screenWidth = getWidth(); 955 final int screenHeight = getHeight(); 956 957 // Making the assumption that all pages have the same width as the 0th 958 final int pageWidth = getChildAt(0).getMeasuredWidth(); 959 final int pageHeight = getChildAt(0).getMeasuredHeight(); 960 961 final int scaledPageWidth = (int) (SHRINK_FACTOR * pageWidth); 962 final int scaledPageHeight = (int) (SHRINK_FACTOR * pageHeight); 963 final float extraScaledSpacing = res.getDimension(R.dimen.smallScreenExtraSpacing); 964 965 final int screenCount = getChildCount(); 966 float totalWidth = screenCount * scaledPageWidth + (screenCount - 1) * extraScaledSpacing; 967 968 boolean isPortrait = getMeasuredHeight() > getMeasuredWidth(); 969 float newY = (isPortrait ? 970 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginPortrait) : 971 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginLandscape)); 972 float finalAlpha = 1.0f; 973 float extraShrinkFactor = 1.0f; 974 if (shrinkPosition == ShrinkPosition.SHRINK_TO_BOTTOM_VISIBLE) { 975 newY = screenHeight - newY - scaledPageHeight; 976 } else if (shrinkPosition == ShrinkPosition.SHRINK_TO_BOTTOM_HIDDEN) { 977 978 // We shrink and disappear to nothing in the case of all apps 979 // (which is when we shrink to the bottom) 980 newY = screenHeight - newY - scaledPageHeight; 981 finalAlpha = 0.0f; 982 } else if (shrinkPosition == ShrinkPosition.SHRINK_TO_MIDDLE) { 983 newY = screenHeight / 2 - scaledPageHeight / 2; 984 finalAlpha = 1.0f; 985 } else if (shrinkPosition == ShrinkPosition.SHRINK_TO_TOP) { 986 newY = (isPortrait ? 987 getResources().getDimension(R.dimen.customizeSmallScreenVerticalMarginPortrait) : 988 getResources().getDimension(R.dimen.customizeSmallScreenVerticalMarginLandscape)); 989 } 990 991 // We animate all the screens to the centered position in workspace 992 // At the same time, the screens become greyed/dimmed 993 994 // newX is initialized to the left-most position of the centered screens 995 float newX = mScroller.getFinalX() + screenWidth / 2 - totalWidth / 2; 996 997 // We are going to scale about the center of the view, so we need to adjust the positions 998 // of the views accordingly 999 newX -= (pageWidth - scaledPageWidth) / 2.0f; 1000 newY -= (pageHeight - scaledPageHeight) / 2.0f; 1001 1002 if (mAnimator != null) { 1003 mAnimator.cancel(); 1004 } 1005 mAnimator = new AnimatorSet(); 1006 for (int i = 0; i < screenCount; i++) { 1007 CellLayout cl = (CellLayout) getChildAt(i); 1008 1009 float rotation = (-i + 2) * WORKSPACE_ROTATION; 1010 float rotationScaleX = (float) (1.0f / Math.cos(Math.PI * rotation / 180.0f)); 1011 float rotationScaleY = getYScaleForScreen(i); 1012 1013 if (animated) { 1014 final int duration = res.getInteger(R.integer.config_workspaceShrinkTime); 1015 1016 ObjectAnimator animWithInterpolator = ObjectAnimator.ofPropertyValuesHolder(cl, 1017 PropertyValuesHolder.ofFloat("x", newX), 1018 PropertyValuesHolder.ofFloat("y", newY), 1019 PropertyValuesHolder.ofFloat("scaleX", 1020 SHRINK_FACTOR * rotationScaleX * extraShrinkFactor), 1021 PropertyValuesHolder.ofFloat("scaleY", 1022 SHRINK_FACTOR * rotationScaleY * extraShrinkFactor), 1023 PropertyValuesHolder.ofFloat("backgroundAlpha", finalAlpha), 1024 PropertyValuesHolder.ofFloat("alpha", finalAlpha), 1025 PropertyValuesHolder.ofFloat("rotationY", rotation)); 1026 1027 animWithInterpolator.setDuration(duration); 1028 animWithInterpolator.setInterpolator(mZoomOutInterpolator); 1029 mAnimator.playTogether(animWithInterpolator); 1030 } else { 1031 cl.setX((int)newX); 1032 cl.setY((int)newY); 1033 cl.setScaleX(SHRINK_FACTOR * rotationScaleX * extraShrinkFactor); 1034 cl.setScaleY(SHRINK_FACTOR * rotationScaleY * extraShrinkFactor); 1035 cl.setBackgroundAlpha(finalAlpha); 1036 cl.setAlpha(finalAlpha); 1037 cl.setRotationY(rotation); 1038 } 1039 // increment newX for the next screen 1040 newX += scaledPageWidth + extraScaledSpacing; 1041 } 1042 if (animated) { 1043 mAnimator.start(); 1044 } 1045 setChildrenDrawnWithCacheEnabled(true); 1046 } 1047 1048 /* 1049 * This interpolator emulates the rate at which the perceived scale of an object changes 1050 * as its distance from a camera increases. When this interpolator is applied to a scale 1051 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1052 * from the camera. 1053 */ 1054 static class ZInterpolator implements TimeInterpolator { 1055 private float focalLength; 1056 1057 public ZInterpolator(float foc) { 1058 focalLength = foc; 1059 } 1060 1061 public float getInterpolation(float input) { 1062 return (1.0f - focalLength / (focalLength + input)) / 1063 (1.0f - focalLength / (focalLength + 1.0f)); 1064 } 1065 } 1066 1067 /* 1068 * The exact reverse of ZInterpolator. 1069 */ 1070 static class InverseZInterpolator implements TimeInterpolator { 1071 private ZInterpolator zInterpolator; 1072 public InverseZInterpolator(float foc) { 1073 zInterpolator = new ZInterpolator(foc); 1074 } 1075 public float getInterpolation(float input) { 1076 return 1 - zInterpolator.getInterpolation(1 - input); 1077 } 1078 } 1079 1080 /* 1081 * ZInterpolator compounded with an ease-out. 1082 */ 1083 static class ZoomOutInterpolator implements TimeInterpolator { 1084 private final ZInterpolator zInterpolator = new ZInterpolator(0.2f); 1085 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(1.5f); 1086 1087 public float getInterpolation(float input) { 1088 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1089 } 1090 } 1091 1092 /* 1093 * InvereZInterpolator compounded with an ease-out. 1094 */ 1095 static class ZoomInInterpolator implements TimeInterpolator { 1096 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1097 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1098 1099 public float getInterpolation(float input) { 1100 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1101 } 1102 } 1103 1104 private final ZoomOutInterpolator mZoomOutInterpolator = new ZoomOutInterpolator(); 1105 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1106 1107 private void updateWhichPagesAcceptDrops(ShrinkPosition state) { 1108 updateWhichPagesAcceptDropsHelper(state, false, 1, 1); 1109 } 1110 1111 private void updateWhichPagesAcceptDropsDuringDrag(ShrinkPosition state, int spanX, int spanY) { 1112 updateWhichPagesAcceptDropsHelper(state, true, spanX, spanY); 1113 } 1114 1115 private void updateWhichPagesAcceptDropsHelper( 1116 ShrinkPosition state, boolean isDragHappening, int spanX, int spanY) { 1117 final int screenCount = getChildCount(); 1118 for (int i = 0; i < screenCount; i++) { 1119 CellLayout cl = (CellLayout) getChildAt(i); 1120 1121 switch (state) { 1122 case SHRINK_TO_TOP: 1123 if (!isDragHappening) { 1124 boolean showDropHighlight = i == mCurrentPage; 1125 cl.setAcceptsDrops(showDropHighlight); 1126 break; 1127 } 1128 // otherwise, fall through below and mark non-full screens as accepting drops 1129 case SHRINK_TO_BOTTOM_HIDDEN: 1130 case SHRINK_TO_BOTTOM_VISIBLE: 1131 if (!isDragHappening) { 1132 // even if a drag isn't happening, we don't want to show a screen as 1133 // accepting drops if it doesn't have at least one free cell 1134 spanX = 1; 1135 spanY = 1; 1136 } 1137 // the page accepts drops if we can find at least one empty spot 1138 cl.setAcceptsDrops(cl.findCellForSpan(null, spanX, spanY)); 1139 break; 1140 default: 1141 throw new RuntimeException( 1142 "updateWhichPagesAcceptDropsHelper passed an unhandled ShrinkPosition"); 1143 } 1144 } 1145 } 1146 1147 /* 1148 * 1149 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithItemMinSize) whenever we 1150 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1151 * 1152 * These methods mark the appropriate pages as accepting drops (which alters their visual 1153 * appearance). 1154 * 1155 */ 1156 public void onDragStartedWithItemSpans(int spanX, int spanY) { 1157 updateWhichPagesAcceptDropsDuringDrag(mShrunkenState, spanX, spanY); 1158 } 1159 1160 public void onDragStartedWithItemMinSize(int minWidth, int minHeight) { 1161 int[] spanXY = CellLayout.rectToCell(getResources(), minWidth, minHeight, null); 1162 onDragStartedWithItemSpans(spanXY[0], spanXY[1]); 1163 } 1164 1165 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1166 // never dragged over 1167 public void onDragStopped() { 1168 updateWhichPagesAcceptDrops(mShrunkenState); 1169 } 1170 1171 // We call this when we trigger an unshrink by clicking on the CellLayout cl 1172 public void unshrink(CellLayout clThatWasClicked) { 1173 int newCurrentPage = mCurrentPage; 1174 final int screenCount = getChildCount(); 1175 for (int i = 0; i < screenCount; i++) { 1176 if (getChildAt(i) == clThatWasClicked) { 1177 newCurrentPage = i; 1178 } 1179 } 1180 unshrink(newCurrentPage); 1181 } 1182 1183 @Override 1184 protected boolean handlePagingClicks() { 1185 return true; 1186 } 1187 1188 private void unshrink(int newCurrentPage) { 1189 if (mIsSmall) { 1190 int newX = getChildOffset(newCurrentPage) - getRelativeChildOffset(newCurrentPage); 1191 int delta = newX - mScrollX; 1192 1193 final int screenCount = getChildCount(); 1194 for (int i = 0; i < screenCount; i++) { 1195 CellLayout cl = (CellLayout) getChildAt(i); 1196 cl.setX(cl.getX() + delta); 1197 } 1198 setCurrentPage(newCurrentPage); 1199 unshrink(); 1200 } 1201 } 1202 1203 void unshrink() { 1204 unshrink(true); 1205 } 1206 1207 void unshrink(boolean animated) { 1208 hideBackgroundGradient(); 1209 1210 if (mIsSmall) { 1211 mIsSmall = false; 1212 if (mAnimator != null) { 1213 mAnimator.cancel(); 1214 } 1215 1216 mAnimator = new AnimatorSet(); 1217 final int screenCount = getChildCount(); 1218 1219 final int duration = getResources().getInteger(R.integer.config_workspaceUnshrinkTime); 1220 for (int i = 0; i < screenCount; i++) { 1221 final CellLayout cl = (CellLayout)getChildAt(i); 1222 float finalAlphaValue = (i == mCurrentPage) ? 1.0f : 0.0f; 1223 float rotation = 0.0f; 1224 1225 if (i < mCurrentPage) { 1226 rotation = WORKSPACE_ROTATION; 1227 } else if (i > mCurrentPage) { 1228 rotation = -WORKSPACE_ROTATION; 1229 } 1230 1231 float translation = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1232 1233 if (animated) { 1234 ObjectAnimator animWithInterpolator = ObjectAnimator.ofPropertyValuesHolder(cl, 1235 PropertyValuesHolder.ofFloat("translationX", translation), 1236 PropertyValuesHolder.ofFloat("translationY", 0.0f), 1237 PropertyValuesHolder.ofFloat("scaleX", 1.0f), 1238 PropertyValuesHolder.ofFloat("scaleY", 1.0f), 1239 PropertyValuesHolder.ofFloat("backgroundAlpha", 0.0f), 1240 PropertyValuesHolder.ofFloat("alpha", finalAlphaValue), 1241 PropertyValuesHolder.ofFloat("rotationY", rotation)); 1242 animWithInterpolator.setDuration(duration); 1243 animWithInterpolator.setInterpolator(mZoomInInterpolator); 1244 mAnimator.playTogether(animWithInterpolator); 1245 } else { 1246 cl.setTranslationX(translation); 1247 cl.setTranslationY(0.0f); 1248 cl.setScaleX(1.0f); 1249 cl.setScaleY(1.0f); 1250 cl.setBackgroundAlpha(0.0f); 1251 cl.setAlpha(finalAlphaValue); 1252 cl.setRotationY(rotation); 1253 } 1254 } 1255 1256 if (animated) { 1257 // If we call this when we're not animated, onAnimationEnd is never called on 1258 // the listener; make sure we only use the listener when we're actually animating 1259 mAnimator.addListener(mUnshrinkAnimationListener); 1260 mAnimator.start(); 1261 } 1262 } 1263 } 1264 1265 /** 1266 * Draw the View v into the given Canvas. 1267 * 1268 * @param v the view to draw 1269 * @param destCanvas the canvas to draw on 1270 * @param padding the horizontal and vertical padding to use when drawing 1271 */ 1272 private void drawDragView(View v, Canvas destCanvas, int padding) { 1273 final Rect clipRect = mTempRect; 1274 v.getDrawingRect(clipRect); 1275 1276 // For a TextView, adjust the clip rect so that we don't include the text label 1277 if (v instanceof TextView) { 1278 final TextView tv = (TextView) v; 1279 clipRect.bottom = clipRect.top + tv.getCompoundPaddingTop() - 1; 1280 } 1281 1282 // Draw the View into the bitmap. 1283 // The translate of scrollX and scrollY is necessary when drawing TextViews, because 1284 // they set scrollX and scrollY to large values to achieve centered text 1285 1286 destCanvas.save(); 1287 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1288 destCanvas.clipRect(clipRect, Op.REPLACE); 1289 v.draw(destCanvas); 1290 destCanvas.restore(); 1291 } 1292 1293 /** 1294 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1295 * Responsibility for the bitmap is transferred to the caller. 1296 */ 1297 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1298 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1299 final Bitmap b = Bitmap.createBitmap( 1300 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1301 1302 canvas.setBitmap(b); 1303 drawDragView(v, canvas, padding); 1304 mOutlineHelper.applyExpensiveOuterOutline(b, canvas, outlineColor, true); 1305 1306 return b; 1307 } 1308 1309 /** 1310 * Creates a drag outline to represent a drop (that we don't have the actual information for 1311 * yet). May be changed in the future to alter the drop outline slightly depending on the 1312 * clip description mime data. 1313 */ 1314 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 1315 Resources r = getResources(); 1316 final int outlineColor = r.getColor(R.color.drag_outline_color); 1317 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 1318 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 1319 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 1320 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 1321 final Bitmap b = Bitmap.createBitmap( 1322 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 1323 1324 canvas.setBitmap(b); 1325 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 1326 rectRadius, rectRadius, mExternalDragOutlinePaint); 1327 mOutlineHelper.applyExpensiveOuterOutline(b, canvas, outlineColor, true); 1328 1329 return b; 1330 } 1331 1332 /** 1333 * Returns a new bitmap to show when the given View is being dragged around. 1334 * Responsibility for the bitmap is transferred to the caller. 1335 */ 1336 private Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1337 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1338 final Bitmap b = Bitmap.createBitmap( 1339 mDragOutline.getWidth(), mDragOutline.getHeight(), Bitmap.Config.ARGB_8888); 1340 1341 canvas.setBitmap(b); 1342 canvas.drawBitmap(mDragOutline, 0, 0, null); 1343 drawDragView(v, canvas, padding); 1344 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 1345 1346 return b; 1347 } 1348 1349 void startDrag(CellLayout.CellInfo cellInfo) { 1350 View child = cellInfo.cell; 1351 1352 // Make sure the drag was started by a long press as opposed to a long click. 1353 if (!child.isInTouchMode()) { 1354 return; 1355 } 1356 1357 mDragInfo = cellInfo; 1358 mDragInfo.screen = mCurrentPage; 1359 1360 CellLayout current = getCurrentDropLayout(); 1361 1362 current.onDragChild(child); 1363 1364 child.clearFocus(); 1365 child.setPressed(false); 1366 1367 final Canvas canvas = new Canvas(); 1368 1369 // We need to add extra padding to the bitmap to make room for the glow effect 1370 final int bitmapPadding = HolographicOutlineHelper.OUTER_BLUR_RADIUS; 1371 1372 // The outline is used to visualize where the item will land if dropped 1373 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 1374 1375 // The drag bitmap follows the touch point around on the screen 1376 final Bitmap b = createDragBitmap(child, canvas, bitmapPadding); 1377 1378 final int bmpWidth = b.getWidth(); 1379 final int bmpHeight = b.getHeight(); 1380 child.getLocationOnScreen(mTempXY); 1381 final int screenX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 1382 final int screenY = (int) mTempXY[1] + (child.getHeight() - bmpHeight) / 2; 1383 mDragController.startDrag(b, screenX, screenY, 0, 0, bmpWidth, bmpHeight, this, 1384 child.getTag(), DragController.DRAG_ACTION_MOVE, null); 1385 b.recycle(); 1386 } 1387 1388 void addApplicationShortcut(ShortcutInfo info, int screen, int cellX, int cellY, 1389 boolean insertAtFirst, int intersectX, int intersectY) { 1390 final CellLayout cellLayout = (CellLayout) getChildAt(screen); 1391 View view = mLauncher.createShortcut(R.layout.application, cellLayout, (ShortcutInfo) info); 1392 1393 final int[] cellXY = new int[2]; 1394 cellLayout.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1395 addInScreen(view, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1396 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 1397 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 1398 cellXY[0], cellXY[1]); 1399 } 1400 1401 private void setPositionForDropAnimation( 1402 View dragView, int dragViewX, int dragViewY, View parent, View child) { 1403 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 1404 1405 // Based on the position of the drag view, find the top left of the original view 1406 int viewX = dragViewX + (dragView.getWidth() - child.getWidth()) / 2; 1407 int viewY = dragViewY + (dragView.getHeight() - child.getHeight()) / 2; 1408 viewX += getResources().getInteger(R.integer.config_dragViewOffsetX); 1409 viewY += getResources().getInteger(R.integer.config_dragViewOffsetY); 1410 1411 // Set its old pos (in the new parent's coordinates); it will be animated 1412 // in animateViewIntoPosition after the next layout pass 1413 lp.oldX = viewX - (parent.getLeft() - mScrollX); 1414 lp.oldY = viewY - (parent.getTop() - mScrollY); 1415 } 1416 1417 public void animateViewIntoPosition(final View view) { 1418 final CellLayout parent = (CellLayout) view.getParent(); 1419 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 1420 1421 // Convert the animation params to be relative to the Workspace, not the CellLayout 1422 final int fromX = lp.oldX + parent.getLeft(); 1423 final int fromY = lp.oldY + parent.getTop(); 1424 1425 final int dx = lp.x - lp.oldX; 1426 final int dy = lp.y - lp.oldY; 1427 1428 // Calculate the duration of the animation based on the object's distance 1429 final float dist = (float) Math.sqrt(dx*dx + dy*dy); 1430 final Resources res = getResources(); 1431 final float maxDist = (float) res.getInteger(R.integer.config_dropAnimMaxDist); 1432 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration); 1433 if (dist < maxDist) { 1434 duration *= mQuintEaseOutInterpolator.getInterpolation(dist / maxDist); 1435 } 1436 1437 if (mDropAnim != null) { 1438 // This should really be end(), but that will not be called synchronously, 1439 // so instead we use LauncherAnimatorListenerAdapter.onAnimationEndOrCancel() 1440 // and call cancel() here. 1441 mDropAnim.cancel(); 1442 } 1443 mDropAnim = new ValueAnimator(); 1444 mDropAnim.setInterpolator(mQuintEaseOutInterpolator); 1445 1446 // The view is invisible during the animation; we render it manually. 1447 mDropAnim.addListener(new LauncherAnimatorListenerAdapter() { 1448 public void onAnimationStart(Animator animation) { 1449 // Set this here so that we don't render it until the animation begins 1450 mDropView = view; 1451 } 1452 1453 public void onAnimationEndOrCancel(Animator animation) { 1454 if (mDropView != null) { 1455 mDropView.setVisibility(View.VISIBLE); 1456 mDropView = null; 1457 } 1458 } 1459 }); 1460 1461 mDropAnim.setDuration(duration); 1462 mDropAnim.setFloatValues(0.0f, 1.0f); 1463 mDropAnim.removeAllUpdateListeners(); 1464 mDropAnim.addUpdateListener(new AnimatorUpdateListener() { 1465 public void onAnimationUpdate(ValueAnimator animation) { 1466 final float percent = (Float) animation.getAnimatedValue(); 1467 // Invalidate the old position 1468 invalidate(mDropViewPos[0], mDropViewPos[1], 1469 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 1470 1471 mDropViewPos[0] = fromX + (int) (percent * dx + 0.5f); 1472 mDropViewPos[1] = fromY + (int) (percent * dy + 0.5f); 1473 invalidate(mDropViewPos[0], mDropViewPos[1], 1474 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 1475 } 1476 }); 1477 1478 view.setVisibility(View.INVISIBLE); 1479 1480 if (!mScroller.isFinished()) { 1481 mAnimOnPageEndMoving = mDropAnim; 1482 } else { 1483 mDropAnim.start(); 1484 } 1485 } 1486 1487 /** 1488 * {@inheritDoc} 1489 */ 1490 public boolean acceptDrop(DragSource source, int x, int y, 1491 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 1492 1493 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1494 if (source != this) { 1495 // Don't accept the drop if we're not over a screen at time of drop 1496 if (mDragTargetLayout == null) { 1497 return false; 1498 } 1499 1500 final CellLayout.CellInfo dragCellInfo = mDragInfo; 1501 final int spanX = dragCellInfo == null ? 1 : dragCellInfo.spanX; 1502 final int spanY = dragCellInfo == null ? 1 : dragCellInfo.spanY; 1503 1504 final View ignoreView = dragCellInfo == null ? null : dragCellInfo.cell; 1505 1506 // Don't accept the drop if there's no room for the item 1507 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 1508 mLauncher.showOutOfSpaceMessage(); 1509 return false; 1510 } 1511 } 1512 return true; 1513 } 1514 1515 public void onDrop(DragSource source, int x, int y, int xOffset, int yOffset, 1516 DragView dragView, Object dragInfo) { 1517 1518 int originX = x - xOffset; 1519 int originY = y - yOffset; 1520 1521 if (mIsSmall || mIsInUnshrinkAnimation) { 1522 // get originX and originY in the local coordinate system of the screen 1523 mTempOriginXY[0] = originX; 1524 mTempOriginXY[1] = originY; 1525 mapPointFromSelfToChild(mDragTargetLayout, mTempOriginXY); 1526 originX = (int)mTempOriginXY[0]; 1527 originY = (int)mTempOriginXY[1]; 1528 } 1529 1530 if (source != this) { 1531 onDropExternal(originX, originY, dragInfo, mDragTargetLayout); 1532 } else if (mDragInfo != null) { 1533 final View cell = mDragInfo.cell; 1534 CellLayout dropTargetLayout = mDragTargetLayout; 1535 1536 // Handle the case where the user drops when in the scroll area. 1537 // This is treated as a drop on the adjacent page. 1538 if (dropTargetLayout == null && mInScrollArea) { 1539 if (mPendingScrollDirection == DragController.SCROLL_LEFT) { 1540 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage - 1); 1541 } else if (mPendingScrollDirection == DragController.SCROLL_RIGHT) { 1542 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage + 1); 1543 } 1544 } 1545 1546 if (dropTargetLayout != null) { 1547 // Move internally 1548 mTargetCell = findNearestVacantArea(originX, originY, 1549 mDragInfo.spanX, mDragInfo.spanY, cell, dropTargetLayout, 1550 mTargetCell); 1551 1552 final int screen = (mTargetCell == null) ? 1553 mDragInfo.screen : indexOfChild(dropTargetLayout); 1554 1555 if (screen != mCurrentPage) { 1556 snapToPage(screen); 1557 } 1558 1559 if (mTargetCell != null) { 1560 if (screen != mDragInfo.screen) { 1561 // Reparent the view 1562 ((CellLayout) getChildAt(mDragInfo.screen)).removeView(cell); 1563 addInScreen(cell, screen, mTargetCell[0], mTargetCell[1], 1564 mDragInfo.spanX, mDragInfo.spanY); 1565 } 1566 1567 // update the item's position after drop 1568 final ItemInfo info = (ItemInfo) cell.getTag(); 1569 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 1570 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 1571 lp.cellX = mTargetCell[0]; 1572 lp.cellY = mTargetCell[1]; 1573 cell.setId(LauncherModel.getCellLayoutChildId(-1, mDragInfo.screen, 1574 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 1575 1576 LauncherModel.moveItemInDatabase(mLauncher, info, 1577 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 1578 lp.cellX, lp.cellY); 1579 } 1580 } 1581 1582 final CellLayout parent = (CellLayout) cell.getParent(); 1583 1584 // Prepare it to be animated into its new position 1585 // This must be called after the view has been re-parented 1586 setPositionForDropAnimation(dragView, originX, originY, parent, cell); 1587 parent.onDropChild(cell); 1588 } 1589 } 1590 1591 public void onDragEnter(DragSource source, int x, int y, int xOffset, 1592 int yOffset, DragView dragView, Object dragInfo) { 1593 mDragTargetLayout = null; // Reset the drag state 1594 1595 if (!mIsSmall) { 1596 mDragTargetLayout = getCurrentDropLayout(); 1597 mDragTargetLayout.onDragEnter(); 1598 showOutlines(); 1599 } 1600 } 1601 1602 public DropTarget getDropTargetDelegate(DragSource source, int x, int y, 1603 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 1604 1605 if (mIsSmall || mIsInUnshrinkAnimation) { 1606 // If we're shrunken, don't let anyone drag on folders/etc that are on the mini-screens 1607 return null; 1608 } 1609 // We may need to delegate the drag to a child view. If a 1x1 item 1610 // would land in a cell occupied by a DragTarget (e.g. a Folder), 1611 // then drag events should be handled by that child. 1612 1613 ItemInfo item = (ItemInfo)dragInfo; 1614 CellLayout currentLayout = getCurrentDropLayout(); 1615 1616 int dragPointX, dragPointY; 1617 if (item.spanX == 1 && item.spanY == 1) { 1618 // For a 1x1, calculate the drop cell exactly as in onDragOver 1619 dragPointX = x - xOffset; 1620 dragPointY = y - yOffset; 1621 } else { 1622 // Otherwise, use the exact drag coordinates 1623 dragPointX = x; 1624 dragPointY = y; 1625 } 1626 dragPointX += mScrollX - currentLayout.getLeft(); 1627 dragPointY += mScrollY - currentLayout.getTop(); 1628 1629 // If we are dragging over a cell that contains a DropTarget that will 1630 // accept the drop, delegate to that DropTarget. 1631 final int[] cellXY = mTempCell; 1632 currentLayout.estimateDropCell(dragPointX, dragPointY, item.spanX, item.spanY, cellXY); 1633 View child = currentLayout.getChildAt(cellXY[0], cellXY[1]); 1634 if (child instanceof DropTarget) { 1635 DropTarget target = (DropTarget)child; 1636 if (target.acceptDrop(source, x, y, xOffset, yOffset, dragView, dragInfo)) { 1637 return target; 1638 } 1639 } 1640 return null; 1641 } 1642 1643 /** 1644 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 1645 * in the returned structure related to the widgets that match the drop (or a null list if it is 1646 * a shortcut drop). If the drop is not accepted then a null structure is returned. 1647 */ 1648 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 1649 final LauncherModel model = mLauncher.getModel(); 1650 final ClipDescription desc = event.getClipDescription(); 1651 final int mimeTypeCount = desc.getMimeTypeCount(); 1652 for (int i = 0; i < mimeTypeCount; ++i) { 1653 final String mimeType = desc.getMimeType(i); 1654 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 1655 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 1656 } else { 1657 final List<WidgetMimeTypeHandlerData> widgets = 1658 model.resolveWidgetsForMimeType(mContext, mimeType); 1659 if (widgets.size() > 0) { 1660 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 1661 } 1662 } 1663 } 1664 return null; 1665 } 1666 1667 /** 1668 * Global drag and drop handler 1669 */ 1670 @Override 1671 public boolean onDragEvent(DragEvent event) { 1672 final ClipDescription desc = event.getClipDescription(); 1673 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 1674 final int[] pos = new int[2]; 1675 layout.getLocationOnScreen(pos); 1676 // We need to offset the drag coordinates to layout coordinate space 1677 final int x = (int) event.getX() - pos[0]; 1678 final int y = (int) event.getY() - pos[1]; 1679 1680 switch (event.getAction()) { 1681 case DragEvent.ACTION_DRAG_STARTED: { 1682 // Validate this drag 1683 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 1684 if (test != null) { 1685 boolean isShortcut = (test.second == null); 1686 if (isShortcut) { 1687 // Check if we have enough space on this screen to add a new shortcut 1688 if (!layout.findCellForSpan(pos, 1, 1)) { 1689 Toast.makeText(mContext, mContext.getString(R.string.out_of_space), 1690 Toast.LENGTH_SHORT).show(); 1691 return false; 1692 } 1693 } 1694 } else { 1695 // Show error message if we couldn't accept any of the items 1696 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 1697 Toast.LENGTH_SHORT).show(); 1698 return false; 1699 } 1700 1701 // Create the drag outline 1702 // We need to add extra padding to the bitmap to make room for the glow effect 1703 final Canvas canvas = new Canvas(); 1704 final int bitmapPadding = HolographicOutlineHelper.OUTER_BLUR_RADIUS; 1705 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 1706 1707 // Show the current page outlines to indicate that we can accept this drop 1708 showOutlines(); 1709 layout.setHover(true); 1710 layout.onDragEnter(); 1711 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 1712 1713 return true; 1714 } 1715 case DragEvent.ACTION_DRAG_LOCATION: 1716 // Visualize the drop location 1717 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 1718 return true; 1719 case DragEvent.ACTION_DROP: { 1720 // Try and add any shortcuts 1721 int newDropCount = 0; 1722 final LauncherModel model = mLauncher.getModel(); 1723 final ClipData data = event.getClipData(); 1724 1725 // We assume that the mime types are ordered in descending importance of 1726 // representation. So we enumerate the list of mime types and alert the 1727 // user if any widgets can handle the drop. Only the most preferred 1728 // representation will be handled. 1729 pos[0] = x; 1730 pos[1] = y; 1731 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 1732 if (test != null) { 1733 final int index = test.first; 1734 final List<WidgetMimeTypeHandlerData> widgets = test.second; 1735 final boolean isShortcut = (widgets == null); 1736 final String mimeType = desc.getMimeType(index); 1737 if (isShortcut) { 1738 final Intent intent = data.getItem(index).getIntent(); 1739 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 1740 onDropExternal(x, y, info, layout); 1741 } else { 1742 if (widgets.size() == 1) { 1743 // If there is only one item, then go ahead and add and configure 1744 // that widget 1745 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 1746 final PendingAddWidgetInfo createInfo = 1747 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 1748 mLauncher.addAppWidgetFromDrop(createInfo, mCurrentPage, pos); 1749 } else { 1750 // Show the widget picker dialog if there is more than one widget 1751 // that can handle this data type 1752 final InstallWidgetReceiver.WidgetListAdapter adapter = 1753 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 1754 data, widgets, layout, mCurrentPage, pos); 1755 final AlertDialog.Builder builder = 1756 new AlertDialog.Builder(mContext); 1757 builder.setAdapter(adapter, adapter); 1758 builder.setCancelable(true); 1759 builder.setTitle(mContext.getString( 1760 R.string.external_drop_widget_pick_title)); 1761 builder.setIcon(R.drawable.ic_no_applications); 1762 builder.show(); 1763 } 1764 } 1765 } 1766 return true; 1767 } 1768 case DragEvent.ACTION_DRAG_ENDED: 1769 // Hide the page outlines after the drop 1770 layout.setHover(false); 1771 layout.onDragExit(); 1772 hideOutlines(); 1773 return true; 1774 } 1775 return super.onDragEvent(event); 1776 } 1777 1778 /* 1779 * 1780 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 1781 * coordinate space. The argument xy is modified with the return result. 1782 * 1783 */ 1784 void mapPointFromSelfToChild(View v, float[] xy) { 1785 mapPointFromSelfToChild(v, xy, null); 1786 } 1787 1788 /* 1789 * 1790 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 1791 * coordinate space. The argument xy is modified with the return result. 1792 * 1793 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 1794 * computing it itself; we use this to avoid redundant matrix inversions in 1795 * findMatchingPageForDragOver 1796 * 1797 */ 1798 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 1799 if (cachedInverseMatrix == null) { 1800 v.getMatrix().invert(mTempInverseMatrix); 1801 cachedInverseMatrix = mTempInverseMatrix; 1802 } 1803 xy[0] = xy[0] + mScrollX - v.getLeft(); 1804 xy[1] = xy[1] + mScrollY - v.getTop(); 1805 cachedInverseMatrix.mapPoints(xy); 1806 } 1807 1808 /* 1809 * 1810 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 1811 * the parent View's coordinate space. The argument xy is modified with the return result. 1812 * 1813 */ 1814 void mapPointFromChildToSelf(View v, float[] xy) { 1815 v.getMatrix().mapPoints(xy); 1816 xy[0] -= (mScrollX - v.getLeft()); 1817 xy[1] -= (mScrollY - v.getTop()); 1818 } 1819 1820 static private float squaredDistance(float[] point1, float[] point2) { 1821 float distanceX = point1[0] - point2[0]; 1822 float distanceY = point2[1] - point2[1]; 1823 return distanceX * distanceX + distanceY * distanceY; 1824 } 1825 1826 /* 1827 * 1828 * Returns true if the passed CellLayout cl overlaps with dragView 1829 * 1830 */ 1831 boolean overlaps(CellLayout cl, DragView dragView, 1832 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 1833 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 1834 final float[] draggedItemTopLeft = mTempDragCoordinates; 1835 draggedItemTopLeft[0] = dragViewX + dragView.getScaledDragRegionXOffset(); 1836 draggedItemTopLeft[1] = dragViewY + dragView.getScaledDragRegionYOffset(); 1837 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 1838 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getScaledDragRegionWidth(); 1839 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getScaledDragRegionHeight(); 1840 1841 // Transform the dragged item's top left coordinates 1842 // to the CellLayout's local coordinates 1843 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 1844 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 1845 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 1846 1847 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 1848 // Transform the dragged item's bottom right coordinates 1849 // to the CellLayout's local coordinates 1850 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 1851 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 1852 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 1853 1854 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 1855 float overlap = (overlapRegionRight - overlapRegionLeft) * 1856 (overlapRegionBottom - overlapRegionTop); 1857 if (overlap > 0) { 1858 return true; 1859 } 1860 } 1861 } 1862 return false; 1863 } 1864 1865 /* 1866 * 1867 * This method returns the CellLayout that is currently being dragged to. In order to drag 1868 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 1869 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 1870 * 1871 * Return null if no CellLayout is currently being dragged over 1872 * 1873 */ 1874 private CellLayout findMatchingPageForDragOver( 1875 DragView dragView, int originX, int originY, int offsetX, int offsetY) { 1876 // We loop through all the screens (ie CellLayouts) and see which ones overlap 1877 // with the item being dragged and then choose the one that's closest to the touch point 1878 final int screenCount = getChildCount(); 1879 CellLayout bestMatchingScreen = null; 1880 float smallestDistSoFar = Float.MAX_VALUE; 1881 1882 for (int i = 0; i < screenCount; i++) { 1883 CellLayout cl = (CellLayout)getChildAt(i); 1884 1885 final float[] touchXy = mTempTouchCoordinates; 1886 touchXy[0] = originX + offsetX; 1887 touchXy[1] = originY + offsetY; 1888 1889 // Transform the touch coordinates to the CellLayout's local coordinates 1890 // If the touch point is within the bounds of the cell layout, we can return immediately 1891 cl.getMatrix().invert(mTempInverseMatrix); 1892 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 1893 1894 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 1895 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 1896 return cl; 1897 } 1898 1899 if (overlaps(cl, dragView, originX, originY, mTempInverseMatrix)) { 1900 // Get the center of the cell layout in screen coordinates 1901 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 1902 cellLayoutCenter[0] = cl.getWidth()/2; 1903 cellLayoutCenter[1] = cl.getHeight()/2; 1904 mapPointFromChildToSelf(cl, cellLayoutCenter); 1905 1906 touchXy[0] = originX + offsetX; 1907 touchXy[1] = originY + offsetY; 1908 1909 // Calculate the distance between the center of the CellLayout 1910 // and the touch point 1911 float dist = squaredDistance(touchXy, cellLayoutCenter); 1912 1913 if (dist < smallestDistSoFar) { 1914 smallestDistSoFar = dist; 1915 bestMatchingScreen = cl; 1916 } 1917 } 1918 } 1919 return bestMatchingScreen; 1920 } 1921 1922 public void onDragOver(DragSource source, int x, int y, int xOffset, int yOffset, 1923 DragView dragView, Object dragInfo) { 1924 // When touch is inside the scroll area, skip dragOver actions for the current screen 1925 if (!mInScrollArea) { 1926 CellLayout layout; 1927 int originX = x - xOffset; 1928 int originY = y - yOffset; 1929 if (mIsSmall || mIsInUnshrinkAnimation) { 1930 layout = findMatchingPageForDragOver( 1931 dragView, originX, originY, xOffset, yOffset); 1932 1933 if (layout != mDragTargetLayout) { 1934 if (mDragTargetLayout != null) { 1935 mDragTargetLayout.setHover(false); 1936 } 1937 mDragTargetLayout = layout; 1938 if (mDragTargetLayout != null) { 1939 mDragTargetLayout.setHover(true); 1940 } 1941 } 1942 } else { 1943 layout = getCurrentDropLayout(); 1944 1945 final ItemInfo item = (ItemInfo)dragInfo; 1946 if (dragInfo instanceof LauncherAppWidgetInfo) { 1947 LauncherAppWidgetInfo widgetInfo = (LauncherAppWidgetInfo)dragInfo; 1948 1949 if (widgetInfo.spanX == -1) { 1950 // Calculate the grid spans needed to fit this widget 1951 int[] spans = layout.rectToCell( 1952 widgetInfo.minWidth, widgetInfo.minHeight, null); 1953 item.spanX = spans[0]; 1954 item.spanY = spans[1]; 1955 } 1956 } 1957 1958 if (source instanceof AllAppsPagedView) { 1959 // This is a hack to fix the point used to determine which cell an icon from 1960 // the all apps screen is over 1961 if (item != null && item.spanX == 1 && layout != null) { 1962 int dragRegionLeft = (dragView.getWidth() - layout.getCellWidth()) / 2; 1963 1964 originX += dragRegionLeft - dragView.getDragRegionLeft(); 1965 if (dragView.getDragRegionWidth() != layout.getCellWidth()) { 1966 dragView.setDragRegion(dragView.getDragRegionLeft(), 1967 dragView.getDragRegionTop(), 1968 layout.getCellWidth(), 1969 dragView.getDragRegionHeight()); 1970 } 1971 } 1972 } 1973 1974 if (layout != mDragTargetLayout) { 1975 if (mDragTargetLayout != null) { 1976 mDragTargetLayout.onDragExit(); 1977 } 1978 layout.onDragEnter(); 1979 mDragTargetLayout = layout; 1980 } 1981 1982 // only visualize the drop locations for moving icons within the home screen on 1983 // tablet on phone, we also visualize icons dragged in from All Apps 1984 if ((!LauncherApplication.isScreenXLarge() || source == this) 1985 && mDragTargetLayout != null) { 1986 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 1987 int localOriginX = originX - (mDragTargetLayout.getLeft() - mScrollX); 1988 int localOriginY = originY - (mDragTargetLayout.getTop() - mScrollY); 1989 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 1990 localOriginX, localOriginY, item.spanX, item.spanY); 1991 } 1992 } 1993 } 1994 } 1995 1996 public void onDragExit(DragSource source, int x, int y, int xOffset, 1997 int yOffset, DragView dragView, Object dragInfo) { 1998 if (mDragTargetLayout != null) { 1999 mDragTargetLayout.onDragExit(); 2000 } 2001 if (!mIsPageMoving) { 2002 hideOutlines(); 2003 } 2004 clearAllHovers(); 2005 } 2006 2007 private void onDropExternal(int x, int y, Object dragInfo, 2008 CellLayout cellLayout) { 2009 onDropExternal(x, y, dragInfo, cellLayout, false); 2010 } 2011 2012 @Override 2013 public void getHitRect(Rect outRect) { 2014 // We want the workspace to have the whole area of the display (it will find the correct 2015 // cell layout to drop to in the existing drag/drop logic. 2016 final Display d = mLauncher.getWindowManager().getDefaultDisplay(); 2017 outRect.set(0, 0, d.getWidth(), d.getHeight()); 2018 } 2019 2020 /** 2021 * Add the item specified by dragInfo to the given layout. 2022 * This is basically the equivalent of onDropExternal, except it's not initiated 2023 * by drag and drop. 2024 * @return true if successful 2025 */ 2026 public boolean addExternalItemToScreen(Object dragInfo, View layout) { 2027 CellLayout cl = (CellLayout) layout; 2028 ItemInfo info = (ItemInfo) dragInfo; 2029 2030 if (cl.findCellForSpan(mTempEstimate, info.spanX, info.spanY)) { 2031 onDropExternal(-1, -1, dragInfo, cl, false); 2032 return true; 2033 } 2034 mLauncher.showOutOfSpaceMessage(); 2035 return false; 2036 } 2037 2038 // Drag from somewhere else 2039 // NOTE: This can also be called when we are outside of a drag event, when we want 2040 // to add an item to one of the workspace screens. 2041 private void onDropExternal(int x, int y, Object dragInfo, 2042 CellLayout cellLayout, boolean insertAtFirst) { 2043 int screen = indexOfChild(cellLayout); 2044 if (dragInfo instanceof PendingAddItemInfo) { 2045 PendingAddItemInfo info = (PendingAddItemInfo) dragInfo; 2046 // When dragging and dropping from customization tray, we deal with creating 2047 // widgets/shortcuts/folders in a slightly different way 2048 int[] touchXY = new int[2]; 2049 touchXY[0] = x; 2050 touchXY[1] = y; 2051 switch (info.itemType) { 2052 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 2053 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) info, screen, touchXY); 2054 break; 2055 case LauncherSettings.Favorites.ITEM_TYPE_LIVE_FOLDER: 2056 mLauncher.addLiveFolderFromDrop(info.componentName, screen, touchXY); 2057 break; 2058 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2059 mLauncher.processShortcutFromDrop(info.componentName, screen, touchXY); 2060 break; 2061 default: 2062 throw new IllegalStateException("Unknown item type: " + info.itemType); 2063 } 2064 cellLayout.onDragExit(); 2065 cellLayout.animateDrop(); 2066 return; 2067 } 2068 2069 // This is for other drag/drop cases, like dragging from All Apps 2070 ItemInfo info = (ItemInfo) dragInfo; 2071 2072 View view = null; 2073 2074 switch (info.itemType) { 2075 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 2076 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2077 if (info.container == NO_ID && info instanceof ApplicationInfo) { 2078 // Came from all apps -- make a copy 2079 info = new ShortcutInfo((ApplicationInfo) info); 2080 } 2081 view = mLauncher.createShortcut(R.layout.application, cellLayout, 2082 (ShortcutInfo) info); 2083 break; 2084 case LauncherSettings.Favorites.ITEM_TYPE_USER_FOLDER: 2085 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, 2086 cellLayout, (UserFolderInfo) info, mIconCache); 2087 break; 2088 default: 2089 throw new IllegalStateException("Unknown item type: " + info.itemType); 2090 } 2091 2092 // If the view is null, it has already been added. 2093 if (view == null) { 2094 cellLayout.onDragExit(); 2095 } else { 2096 mTargetCell = new int[]{x, y}; 2097 cellLayout.findCellForSpan(mTargetCell, 1, 1); 2098 addInScreen(view, indexOfChild(cellLayout), mTargetCell[0], 2099 mTargetCell[1], info.spanX, info.spanY, insertAtFirst); 2100 cellLayout.onDropChild(view); 2101 cellLayout.animateDrop(); 2102 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2103 2104 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 2105 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2106 lp.cellX, lp.cellY); 2107 } 2108 } 2109 2110 /** 2111 * Return the current {@link CellLayout}, correctly picking the destination 2112 * screen while a scroll is in progress. 2113 */ 2114 private CellLayout getCurrentDropLayout() { 2115 // if we're currently small, use findMatchingPageForDragOver instead 2116 if (mIsSmall) return null; 2117 int index = mScroller.isFinished() ? mCurrentPage : mNextPage; 2118 return (CellLayout) getChildAt(index); 2119 } 2120 2121 /** 2122 * Return the current CellInfo describing our current drag; this method exists 2123 * so that Launcher can sync this object with the correct info when the activity is created/ 2124 * destroyed 2125 * 2126 */ 2127 public CellLayout.CellInfo getDragInfo() { 2128 return mDragInfo; 2129 } 2130 2131 /** 2132 * Calculate the nearest cell where the given object would be dropped. 2133 */ 2134 private int[] findNearestVacantArea(int pixelX, int pixelY, 2135 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 2136 2137 int localPixelX = pixelX - (layout.getLeft() - mScrollX); 2138 int localPixelY = pixelY - (layout.getTop() - mScrollY); 2139 2140 // Find the best target drop location 2141 return layout.findNearestVacantArea( 2142 localPixelX, localPixelY, spanX, spanY, ignoreView, recycle); 2143 } 2144 2145 /** 2146 * Estimate the size that a child with the given dimensions will take in the current screen. 2147 */ 2148 void estimateChildSize(int minWidth, int minHeight, int[] result) { 2149 ((CellLayout)getChildAt(mCurrentPage)).estimateChildSize(minWidth, minHeight, result); 2150 } 2151 2152 void setLauncher(Launcher launcher) { 2153 mLauncher = launcher; 2154 } 2155 2156 public void setDragController(DragController dragController) { 2157 mDragController = dragController; 2158 } 2159 2160 public void onDropCompleted(View target, boolean success) { 2161 if (success) { 2162 if (target != this && mDragInfo != null) { 2163 final CellLayout cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 2164 cellLayout.removeView(mDragInfo.cell); 2165 if (mDragInfo.cell instanceof DropTarget) { 2166 mDragController.removeDropTarget((DropTarget)mDragInfo.cell); 2167 } 2168 // final Object tag = mDragInfo.cell.getTag(); 2169 } 2170 } else if (mDragInfo != null) { 2171 ((CellLayout) getChildAt(mDragInfo.screen)).onDropChild(mDragInfo.cell); 2172 } 2173 2174 mDragOutline = null; 2175 mDragInfo = null; 2176 } 2177 2178 @Override 2179 public void onDragViewVisible() { 2180 ((View) mDragInfo.cell).setVisibility(View.GONE); 2181 } 2182 2183 public boolean isDropEnabled() { 2184 return true; 2185 } 2186 2187 @Override 2188 protected void onRestoreInstanceState(Parcelable state) { 2189 super.onRestoreInstanceState(state); 2190 Launcher.setScreen(mCurrentPage); 2191 } 2192 2193 @Override 2194 public void scrollLeft() { 2195 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2196 super.scrollLeft(); 2197 } 2198 } 2199 2200 @Override 2201 public void scrollRight() { 2202 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2203 super.scrollRight(); 2204 } 2205 } 2206 2207 @Override 2208 public void onEnterScrollArea(int direction) { 2209 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2210 mInScrollArea = true; 2211 mPendingScrollDirection = direction; 2212 2213 final int page = mCurrentPage + (direction == DragController.SCROLL_LEFT ? -1 : 1); 2214 final CellLayout layout = (CellLayout) getChildAt(page); 2215 2216 if (layout != null) { 2217 layout.setHover(true); 2218 2219 if (mDragTargetLayout != null) { 2220 mDragTargetLayout.onDragExit(); 2221 mDragTargetLayout = null; 2222 } 2223 } 2224 } 2225 } 2226 2227 private void clearAllHovers() { 2228 final int childCount = getChildCount(); 2229 for (int i = 0; i < childCount; i++) { 2230 ((CellLayout) getChildAt(i)).setHover(false); 2231 } 2232 } 2233 2234 @Override 2235 public void onExitScrollArea() { 2236 if (mInScrollArea) { 2237 mInScrollArea = false; 2238 mPendingScrollDirection = DragController.SCROLL_NONE; 2239 clearAllHovers(); 2240 } 2241 } 2242 2243 public Folder getFolderForTag(Object tag) { 2244 final int screenCount = getChildCount(); 2245 for (int screen = 0; screen < screenCount; screen++) { 2246 CellLayout currentScreen = ((CellLayout) getChildAt(screen)); 2247 int count = currentScreen.getChildCount(); 2248 for (int i = 0; i < count; i++) { 2249 View child = currentScreen.getChildAt(i); 2250 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 2251 if (lp.cellHSpan == 4 && lp.cellVSpan == 4 && child instanceof Folder) { 2252 Folder f = (Folder) child; 2253 if (f.getInfo() == tag && f.getInfo().opened) { 2254 return f; 2255 } 2256 } 2257 } 2258 } 2259 return null; 2260 } 2261 2262 public View getViewForTag(Object tag) { 2263 int screenCount = getChildCount(); 2264 for (int screen = 0; screen < screenCount; screen++) { 2265 CellLayout currentScreen = ((CellLayout) getChildAt(screen)); 2266 int count = currentScreen.getChildCount(); 2267 for (int i = 0; i < count; i++) { 2268 View child = currentScreen.getChildAt(i); 2269 if (child.getTag() == tag) { 2270 return child; 2271 } 2272 } 2273 } 2274 return null; 2275 } 2276 2277 2278 void removeItems(final ArrayList<ApplicationInfo> apps) { 2279 final int screenCount = getChildCount(); 2280 final PackageManager manager = getContext().getPackageManager(); 2281 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 2282 2283 final HashSet<String> packageNames = new HashSet<String>(); 2284 final int appCount = apps.size(); 2285 for (int i = 0; i < appCount; i++) { 2286 packageNames.add(apps.get(i).componentName.getPackageName()); 2287 } 2288 2289 for (int i = 0; i < screenCount; i++) { 2290 final CellLayout layout = (CellLayout) getChildAt(i); 2291 2292 // Avoid ANRs by treating each screen separately 2293 post(new Runnable() { 2294 public void run() { 2295 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 2296 childrenToRemove.clear(); 2297 2298 int childCount = layout.getChildCount(); 2299 for (int j = 0; j < childCount; j++) { 2300 final View view = layout.getChildAt(j); 2301 Object tag = view.getTag(); 2302 2303 if (tag instanceof ShortcutInfo) { 2304 final ShortcutInfo info = (ShortcutInfo) tag; 2305 final Intent intent = info.intent; 2306 final ComponentName name = intent.getComponent(); 2307 2308 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 2309 for (String packageName: packageNames) { 2310 if (packageName.equals(name.getPackageName())) { 2311 LauncherModel.deleteItemFromDatabase(mLauncher, info); 2312 childrenToRemove.add(view); 2313 } 2314 } 2315 } 2316 } else if (tag instanceof UserFolderInfo) { 2317 final UserFolderInfo info = (UserFolderInfo) tag; 2318 final ArrayList<ShortcutInfo> contents = info.contents; 2319 final ArrayList<ShortcutInfo> toRemove = new ArrayList<ShortcutInfo>(1); 2320 final int contentsCount = contents.size(); 2321 boolean removedFromFolder = false; 2322 2323 for (int k = 0; k < contentsCount; k++) { 2324 final ShortcutInfo appInfo = contents.get(k); 2325 final Intent intent = appInfo.intent; 2326 final ComponentName name = intent.getComponent(); 2327 2328 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 2329 for (String packageName: packageNames) { 2330 if (packageName.equals(name.getPackageName())) { 2331 toRemove.add(appInfo); 2332 LauncherModel.deleteItemFromDatabase(mLauncher, appInfo); 2333 removedFromFolder = true; 2334 } 2335 } 2336 } 2337 } 2338 2339 contents.removeAll(toRemove); 2340 if (removedFromFolder) { 2341 final Folder folder = getOpenFolder(); 2342 if (folder != null) 2343 folder.notifyDataSetChanged(); 2344 } 2345 } else if (tag instanceof LiveFolderInfo) { 2346 final LiveFolderInfo info = (LiveFolderInfo) tag; 2347 final Uri uri = info.uri; 2348 final ProviderInfo providerInfo = manager.resolveContentProvider( 2349 uri.getAuthority(), 0); 2350 2351 if (providerInfo != null) { 2352 for (String packageName: packageNames) { 2353 if (packageName.equals(providerInfo.packageName)) { 2354 LauncherModel.deleteItemFromDatabase(mLauncher, info); 2355 childrenToRemove.add(view); 2356 } 2357 } 2358 } 2359 } else if (tag instanceof LauncherAppWidgetInfo) { 2360 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 2361 final AppWidgetProviderInfo provider = 2362 widgets.getAppWidgetInfo(info.appWidgetId); 2363 if (provider != null) { 2364 for (String packageName: packageNames) { 2365 if (packageName.equals(provider.provider.getPackageName())) { 2366 LauncherModel.deleteItemFromDatabase(mLauncher, info); 2367 childrenToRemove.add(view); 2368 } 2369 } 2370 } 2371 } 2372 } 2373 2374 childCount = childrenToRemove.size(); 2375 for (int j = 0; j < childCount; j++) { 2376 View child = childrenToRemove.get(j); 2377 layout.removeViewInLayout(child); 2378 if (child instanceof DropTarget) { 2379 mDragController.removeDropTarget((DropTarget)child); 2380 } 2381 } 2382 2383 if (childCount > 0) { 2384 layout.requestLayout(); 2385 layout.invalidate(); 2386 } 2387 } 2388 }); 2389 } 2390 } 2391 2392 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 2393 final int screenCount = getChildCount(); 2394 for (int i = 0; i < screenCount; i++) { 2395 final CellLayout layout = (CellLayout) getChildAt(i); 2396 int childCount = layout.getChildCount(); 2397 for (int j = 0; j < childCount; j++) { 2398 final View view = layout.getChildAt(j); 2399 Object tag = view.getTag(); 2400 if (tag instanceof ShortcutInfo) { 2401 ShortcutInfo info = (ShortcutInfo)tag; 2402 // We need to check for ACTION_MAIN otherwise getComponent() might 2403 // return null for some shortcuts (for instance, for shortcuts to 2404 // web pages.) 2405 final Intent intent = info.intent; 2406 final ComponentName name = intent.getComponent(); 2407 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 2408 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 2409 final int appCount = apps.size(); 2410 for (int k = 0; k < appCount; k++) { 2411 ApplicationInfo app = apps.get(k); 2412 if (app.componentName.equals(name)) { 2413 info.setIcon(mIconCache.getIcon(info.intent)); 2414 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 2415 new FastBitmapDrawable(info.getIcon(mIconCache)), 2416 null, null); 2417 } 2418 } 2419 } 2420 } 2421 } 2422 } 2423 } 2424 2425 void moveToDefaultScreen(boolean animate) { 2426 if (mIsSmall || mIsInUnshrinkAnimation) { 2427 mLauncher.showWorkspace(animate, (CellLayout)getChildAt(mDefaultPage)); 2428 } else if (animate) { 2429 snapToPage(mDefaultPage); 2430 } else { 2431 setCurrentPage(mDefaultPage); 2432 } 2433 getChildAt(mDefaultPage).requestFocus(); 2434 } 2435 2436 void setIndicators(Drawable previous, Drawable next) { 2437 mPreviousIndicator = previous; 2438 mNextIndicator = next; 2439 previous.setLevel(mCurrentPage); 2440 next.setLevel(mCurrentPage); 2441 } 2442 2443 @Override 2444 public void syncPages() { 2445 } 2446 2447 @Override 2448 public void syncPageItems(int page) { 2449 } 2450 2451} 2452