Workspace.java revision 33945b21544bc98381df17726a3537c292d8c985
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.animation.DecelerateInterpolator; 64import android.widget.TextView; 65import android.widget.Toast; 66 67import java.util.ArrayList; 68import java.util.HashSet; 69import java.util.List; 70 71/** 72 * The workspace is a wide area with a wallpaper and a finite number of pages. 73 * Each page contains a number of icons, folders or widgets the user can 74 * interact with. A workspace is meant to be used with a fixed width only. 75 */ 76public class Workspace extends SmoothPagedView 77 implements DropTarget, DragSource, DragScroller, View.OnTouchListener { 78 @SuppressWarnings({"UnusedDeclaration"}) 79 private static final String TAG = "Launcher.Workspace"; 80 81 // This is how much the workspace shrinks when we enter all apps or 82 // customization mode 83 private static final float SHRINK_FACTOR = 0.16f; 84 85 // How much the screens shrink when we enter spring loaded drag mode 86 private static final float SPRING_LOADED_DRAG_SHRINK_FACTOR = 0.7f; 87 88 // Y rotation to apply to the workspace screens 89 private static final float WORKSPACE_ROTATION = 12.5f; 90 91 // These are extra scale factors to apply to the mini home screens 92 // so as to achieve the desired transform 93 private static final float EXTRA_SCALE_FACTOR_0 = 0.972f; 94 private static final float EXTRA_SCALE_FACTOR_1 = 1.0f; 95 private static final float EXTRA_SCALE_FACTOR_2 = 1.10f; 96 97 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 98 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 99 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 100 101 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 102 private static final int BACKGROUND_FADE_IN_DURATION = 350; 103 104 // These animators are used to fade the children's outlines 105 private ObjectAnimator mChildrenOutlineFadeInAnimation; 106 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 107 private float mChildrenOutlineAlpha = 0; 108 109 // These properties refer to the background protection gradient used for AllApps and Customize 110 private ObjectAnimator mBackgroundFadeInAnimation; 111 private ObjectAnimator mBackgroundFadeOutAnimation; 112 private Drawable mBackground; 113 private Drawable mCustomizeTrayBackground; 114 private boolean mDrawCustomizeTrayBackground; 115 private float mBackgroundAlpha = 0; 116 private float mOverScrollMaxBackgroundAlpha = 0.0f; 117 private int mOverScrollPageIndex = -1; 118 119 private View mCustomizationDrawer; 120 private View mCustomizationDrawerContent; 121 private int[] mCustomizationDrawerPos = new int[2]; 122 private float[] mCustomizationDrawerTransformedPos = new float[2]; 123 124 private final WallpaperManager mWallpaperManager; 125 126 private int mDefaultPage; 127 128 private boolean mPageMoving = false; 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 mUnshrinkAnimationListener; 174 enum ShrinkState { TOP, SPRING_LOADED, MIDDLE, BOTTOM_HIDDEN, BOTTOM_VISIBLE }; 175 private ShrinkState mShrinkState; 176 private boolean mWasSpringLoadedOnDragExit = false; 177 private boolean mWaitingToShrink = false; 178 private ShrinkState mWaitingToShrinkState; 179 private AnimatorSet mAnimator; 180 181 /** Is the user is dragging an item near the edge of a page? */ 182 private boolean mInScrollArea = false; 183 184 /** If mInScrollArea is true, the direction of the scroll. */ 185 private int mPendingScrollDirection = DragController.SCROLL_NONE; 186 187 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 188 private Bitmap mDragOutline = null; 189 private final Rect mTempRect = new Rect(); 190 private final int[] mTempXY = new int[2]; 191 192 private ValueAnimator mDropAnim = null; 193 private TimeInterpolator mQuintEaseOutInterpolator = new DecelerateInterpolator(2.5f); 194 private View mDropView = null; 195 private int[] mDropViewPos = new int[] { -1, -1 }; 196 197 // Paint used to draw external drop outline 198 private final Paint mExternalDragOutlinePaint = new Paint(); 199 200 // Camera and Matrix used to determine the final position of a neighboring CellLayout 201 private final Matrix mMatrix = new Matrix(); 202 private final Camera mCamera = new Camera(); 203 private final float mTempFloat2[] = new float[2]; 204 205 /** 206 * Used to inflate the Workspace from XML. 207 * 208 * @param context The application's context. 209 * @param attrs The attributes set containing the Workspace's customization values. 210 */ 211 public Workspace(Context context, AttributeSet attrs) { 212 this(context, attrs, 0); 213 } 214 215 /** 216 * Used to inflate the Workspace from XML. 217 * 218 * @param context The application's context. 219 * @param attrs The attributes set containing the Workspace's customization values. 220 * @param defStyle Unused. 221 */ 222 public Workspace(Context context, AttributeSet attrs, int defStyle) { 223 super(context, attrs, defStyle); 224 mContentIsRefreshable = false; 225 226 if (!LauncherApplication.isScreenXLarge()) { 227 mFadeInAdjacentScreens = false; 228 } 229 230 mWallpaperManager = WallpaperManager.getInstance(context); 231 232 TypedArray a = context.obtainStyledAttributes(attrs, 233 R.styleable.Workspace, defStyle, 0); 234 int cellCountX = a.getInt(R.styleable.Workspace_cellCountX, DEFAULT_CELL_COUNT_X); 235 int cellCountY = a.getInt(R.styleable.Workspace_cellCountY, DEFAULT_CELL_COUNT_Y); 236 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 237 a.recycle(); 238 239 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 240 setHapticFeedbackEnabled(false); 241 242 initWorkspace(); 243 } 244 245 /** 246 * Initializes various states for this workspace. 247 */ 248 protected void initWorkspace() { 249 Context context = getContext(); 250 mCurrentPage = mDefaultPage; 251 Launcher.setScreen(mCurrentPage); 252 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 253 mIconCache = app.getIconCache(); 254 mExternalDragOutlinePaint.setAntiAlias(true); 255 setWillNotDraw(false); 256 257 try { 258 final Resources res = getResources(); 259 mBackground = res.getDrawable(R.drawable.all_apps_bg_gradient); 260 mCustomizeTrayBackground = res.getDrawable(R.drawable.customize_bg_gradient); 261 } catch (Resources.NotFoundException e) { 262 // In this case, we will skip drawing background protection 263 } 264 265 mUnshrinkAnimationListener = new AnimatorListenerAdapter() { 266 @Override 267 public void onAnimationStart(Animator animation) { 268 mIsInUnshrinkAnimation = true; 269 } 270 @Override 271 public void onAnimationEnd(Animator animation) { 272 mIsInUnshrinkAnimation = false; 273 if (mShrinkState != ShrinkState.SPRING_LOADED) { 274 mDrawCustomizeTrayBackground = false; 275 } 276 } 277 }; 278 mSnapVelocity = 600; 279 } 280 281 @Override 282 protected int getScrollMode() { 283 if (LauncherApplication.isScreenXLarge()) { 284 return SmoothPagedView.X_LARGE_MODE; 285 } else { 286 return SmoothPagedView.DEFAULT_MODE; 287 } 288 } 289 290 @Override 291 public void addView(View child, int index, LayoutParams params) { 292 if (!(child instanceof CellLayout)) { 293 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 294 } 295 ((CellLayout) child).setOnInterceptTouchListener(this); 296 super.addView(child, index, params); 297 } 298 299 @Override 300 public void addView(View child) { 301 if (!(child instanceof CellLayout)) { 302 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 303 } 304 ((CellLayout) child).setOnInterceptTouchListener(this); 305 super.addView(child); 306 } 307 308 @Override 309 public void addView(View child, int index) { 310 if (!(child instanceof CellLayout)) { 311 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 312 } 313 ((CellLayout) child).setOnInterceptTouchListener(this); 314 super.addView(child, index); 315 } 316 317 @Override 318 public void addView(View child, int width, int height) { 319 if (!(child instanceof CellLayout)) { 320 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 321 } 322 ((CellLayout) child).setOnInterceptTouchListener(this); 323 super.addView(child, width, height); 324 } 325 326 @Override 327 public void addView(View child, LayoutParams params) { 328 if (!(child instanceof CellLayout)) { 329 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 330 } 331 ((CellLayout) child).setOnInterceptTouchListener(this); 332 super.addView(child, params); 333 } 334 335 /** 336 * @return The open folder on the current screen, or null if there is none 337 */ 338 Folder getOpenFolder() { 339 CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 340 int count = currentPage.getChildCount(); 341 for (int i = 0; i < count; i++) { 342 View child = currentPage.getChildAt(i); 343 if (child instanceof Folder) { 344 Folder folder = (Folder) child; 345 if (folder.getInfo().opened) 346 return folder; 347 } 348 } 349 return null; 350 } 351 352 ArrayList<Folder> getOpenFolders() { 353 final int screenCount = getChildCount(); 354 ArrayList<Folder> folders = new ArrayList<Folder>(screenCount); 355 356 for (int screen = 0; screen < screenCount; screen++) { 357 CellLayout currentPage = (CellLayout) getChildAt(screen); 358 int count = currentPage.getChildCount(); 359 for (int i = 0; i < count; i++) { 360 View child = currentPage.getChildAt(i); 361 if (child instanceof Folder) { 362 Folder folder = (Folder) child; 363 if (folder.getInfo().opened) 364 folders.add(folder); 365 break; 366 } 367 } 368 } 369 return folders; 370 } 371 372 boolean isDefaultPageShowing() { 373 return mCurrentPage == mDefaultPage; 374 } 375 376 /** 377 * Sets the current screen. 378 * 379 * @param currentPage 380 */ 381 @Override 382 void setCurrentPage(int currentPage) { 383 super.setCurrentPage(currentPage); 384 updateWallpaperOffset(mScrollX); 385 } 386 387 /** 388 * Adds the specified child in the specified screen. The position and dimension of 389 * the child are defined by x, y, spanX and spanY. 390 * 391 * @param child The child to add in one of the workspace's screens. 392 * @param screen The screen in which to add the child. 393 * @param x The X position of the child in the screen's grid. 394 * @param y The Y position of the child in the screen's grid. 395 * @param spanX The number of cells spanned horizontally by the child. 396 * @param spanY The number of cells spanned vertically by the child. 397 */ 398 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY) { 399 addInScreen(child, screen, x, y, spanX, spanY, false); 400 } 401 402 void addInFullScreen(View child, int screen) { 403 addInScreen(child, screen, 0, 0, -1, -1); 404 } 405 406 /** 407 * Adds the specified child in the specified screen. The position and dimension of 408 * the child are defined by x, y, spanX and spanY. 409 * 410 * @param child The child to add in one of the workspace's screens. 411 * @param screen The screen in which to add the child. 412 * @param x The X position of the child in the screen's grid. 413 * @param y The Y position of the child in the screen's grid. 414 * @param spanX The number of cells spanned horizontally by the child. 415 * @param spanY The number of cells spanned vertically by the child. 416 * @param insert When true, the child is inserted at the beginning of the children list. 417 */ 418 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY, boolean insert) { 419 if (screen < 0 || screen >= getChildCount()) { 420 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 421 + " (was " + screen + "); skipping child"); 422 return; 423 } 424 425 final CellLayout group = (CellLayout) getChildAt(screen); 426 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 427 if (lp == null) { 428 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 429 } else { 430 lp.cellX = x; 431 lp.cellY = y; 432 lp.cellHSpan = spanX; 433 lp.cellVSpan = spanY; 434 } 435 436 // Get the canonical child id to uniquely represent this view in this screen 437 int childId = LauncherModel.getCellLayoutChildId(-1, screen, x, y, spanX, spanY); 438 boolean markCellsAsOccupied = !(child instanceof Folder); 439 if (!group.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 440 // TODO: This branch occurs when the workspace is adding views 441 // outside of the defined grid 442 // maybe we should be deleting these items from the LauncherModel? 443 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 444 } 445 446 if (!(child instanceof Folder)) { 447 child.setHapticFeedbackEnabled(false); 448 child.setOnLongClickListener(mLongClickListener); 449 } 450 if (child instanceof DropTarget) { 451 mDragController.addDropTarget((DropTarget) child); 452 } 453 } 454 455 public boolean onTouch(View v, MotionEvent event) { 456 // this is an intercepted event being forwarded from a cell layout 457 if (mIsSmall || mIsInUnshrinkAnimation) { 458 // Only allow clicks on a CellLayout if it is visible 459 if (mShrinkState != ShrinkState.BOTTOM_HIDDEN) { 460 mLauncher.onWorkspaceClick((CellLayout) v); 461 } 462 return true; 463 } else if (!mPageMoving) { 464 if (v == getChildAt(mCurrentPage - 1)) { 465 snapToPage(mCurrentPage - 1); 466 return true; 467 } else if (v == getChildAt(mCurrentPage + 1)) { 468 snapToPage(mCurrentPage + 1); 469 return true; 470 } 471 } 472 return false; 473 } 474 475 protected void onWindowVisibilityChanged (int visibility) { 476 mLauncher.onWindowVisibilityChanged(visibility); 477 } 478 479 @Override 480 public boolean dispatchUnhandledMove(View focused, int direction) { 481 if (mIsSmall || mIsInUnshrinkAnimation) { 482 // when the home screens are shrunken, shouldn't allow side-scrolling 483 return false; 484 } 485 return super.dispatchUnhandledMove(focused, direction); 486 } 487 488 @Override 489 public boolean onInterceptTouchEvent(MotionEvent ev) { 490 if (mIsSmall || mIsInUnshrinkAnimation) { 491 if (mLauncher.isAllAppsVisible() && 492 mShrinkState == ShrinkState.BOTTOM_HIDDEN) { 493 // Intercept this event so we can show the workspace in full view 494 // when it is clicked on and it is small 495 return true; 496 } 497 return false; 498 } 499 return super.onInterceptTouchEvent(ev); 500 } 501 502 @Override 503 protected void determineScrollingStart(MotionEvent ev) { 504 if (!mIsSmall && !mIsInUnshrinkAnimation) super.determineScrollingStart(ev); 505 } 506 507 protected void onPageBeginMoving() { 508 if (mNextPage != INVALID_PAGE) { 509 // we're snapping to a particular screen 510 enableChildrenCache(mCurrentPage, mNextPage); 511 } else { 512 // this is when user is actively dragging a particular screen, they might 513 // swipe it either left or right (but we won't advance by more than one screen) 514 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 515 } 516 showOutlines(); 517 mPageMoving = true; 518 } 519 520 protected void onPageEndMoving() { 521 clearChildrenCache(); 522 // Hide the outlines, as long as we're not dragging 523 if (!mDragController.dragging()) { 524 hideOutlines(); 525 } 526 mOverScrollMaxBackgroundAlpha = 0.0f; 527 mOverScrollPageIndex = -1; 528 mPageMoving = false; 529 } 530 531 @Override 532 protected void notifyPageSwitchListener() { 533 super.notifyPageSwitchListener(); 534 535 if (mPreviousIndicator != null) { 536 // if we know the next page, we show the indication for it right away; it looks 537 // weird if the indicators are lagging 538 int page = mNextPage; 539 if (page == INVALID_PAGE) { 540 page = mCurrentPage; 541 } 542 mPreviousIndicator.setLevel(page); 543 mNextIndicator.setLevel(page); 544 } 545 Launcher.setScreen(mCurrentPage); 546 }; 547 548 private void updateWallpaperOffset(int scrollRange) { 549 final boolean isStaticWallpaper = (mWallpaperManager != null) && 550 (mWallpaperManager.getWallpaperInfo() == null); 551 if (LauncherApplication.isScreenXLarge() && !isStaticWallpaper) { 552 IBinder token = getWindowToken(); 553 if (token != null) { 554 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 0 ); 555 mWallpaperManager.setWallpaperOffsets(getWindowToken(), 556 Math.max(0.f, Math.min(mScrollX/(float)scrollRange, 1.f)), 0); 557 } 558 } 559 } 560 561 public void showOutlines() { 562 if (!mIsSmall && !mIsInUnshrinkAnimation) { 563 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 564 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 565 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 566 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 567 mChildrenOutlineFadeInAnimation.start(); 568 } 569 } 570 571 public void hideOutlines() { 572 if (!mIsSmall && !mIsInUnshrinkAnimation) { 573 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 574 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 575 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 576 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 577 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 578 mChildrenOutlineFadeOutAnimation.start(); 579 } 580 } 581 582 public void setChildrenOutlineAlpha(float alpha) { 583 mChildrenOutlineAlpha = alpha; 584 for (int i = 0; i < getChildCount(); i++) { 585 CellLayout cl = (CellLayout) getChildAt(i); 586 cl.setBackgroundAlpha(alpha); 587 } 588 } 589 590 public float getChildrenOutlineAlpha() { 591 return mChildrenOutlineAlpha; 592 } 593 594 private void showBackgroundGradientForAllApps() { 595 showBackgroundGradient(); 596 mDrawCustomizeTrayBackground = false; 597 } 598 599 private void showBackgroundGradientForCustomizeTray() { 600 showBackgroundGradient(); 601 mDrawCustomizeTrayBackground = true; 602 } 603 604 private void showBackgroundGradient() { 605 if (mBackground == null) return; 606 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 607 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 608 mBackgroundFadeInAnimation = ObjectAnimator.ofFloat(this, "backgroundAlpha", 1.0f); 609 mBackgroundFadeInAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 610 mBackgroundFadeInAnimation.setDuration(BACKGROUND_FADE_IN_DURATION); 611 mBackgroundFadeInAnimation.start(); 612 } 613 614 private void hideBackgroundGradient() { 615 if (mBackground == null) return; 616 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 617 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 618 mBackgroundFadeOutAnimation = ObjectAnimator.ofFloat(this, "backgroundAlpha", 0.0f); 619 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 620 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 621 mBackgroundFadeOutAnimation.start(); 622 } 623 624 public void setBackgroundAlpha(float alpha) { 625 mBackgroundAlpha = alpha; 626 invalidate(); 627 } 628 629 public float getBackgroundAlpha() { 630 return mBackgroundAlpha; 631 } 632 633 /** 634 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 635 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 636 * as being larger. This method computes what offset the rotated view should be translated 637 * in order to minimize this perceived gap. 638 * @param degrees Angle of the view 639 * @param width Width of the view 640 * @param height Height of the view 641 * @return Offset to be used in a View.setTranslationX() call 642 */ 643 private float getOffsetXForRotation(float degrees, int width, int height) { 644 mMatrix.reset(); 645 mCamera.save(); 646 mCamera.rotateY(Math.abs(degrees)); 647 mCamera.getMatrix(mMatrix); 648 mCamera.restore(); 649 650 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 651 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 652 mTempFloat2[0] = width; 653 mTempFloat2[1] = height; 654 mMatrix.mapPoints(mTempFloat2); 655 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 656 } 657 658 float backgroundAlphaInterpolator(float r) { 659 float pivotA = 0.1f; 660 float pivotB = 0.4f; 661 if (r < pivotA) { 662 return 0; 663 } else if (r > pivotB) { 664 return 1.0f; 665 } else { 666 return (r - pivotA)/(pivotB - pivotA); 667 } 668 } 669 670 float overScrollBackgroundAlphaInterpolator(float r) { 671 float threshold = 0.08f; 672 673 if (r > mOverScrollMaxBackgroundAlpha) { 674 mOverScrollMaxBackgroundAlpha = r; 675 } else if (r < mOverScrollMaxBackgroundAlpha) { 676 r = mOverScrollMaxBackgroundAlpha; 677 } 678 679 return Math.min(r / threshold, 1.0f); 680 } 681 682 @Override 683 protected void screenScrolled(int screenCenter) { 684 final int halfScreenSize = getMeasuredWidth() / 2; 685 686 for (int i = 0; i < getChildCount(); i++) { 687 CellLayout cl = (CellLayout) getChildAt(i); 688 if (cl != null) { 689 int totalDistance = getScaledMeasuredWidth(cl) + mPageSpacing; 690 int delta = screenCenter - (getChildOffset(i) - 691 getRelativeChildOffset(i) + halfScreenSize); 692 693 float scrollProgress = delta / (totalDistance * 1.0f); 694 scrollProgress = Math.min(scrollProgress, 1.0f); 695 scrollProgress = Math.max(scrollProgress, -1.0f); 696 697 // If the current page (i) is being overscrolled, we use a different 698 // set of rules for setting the background alpha multiplier. 699 if ((mScrollX < 0 && i == 0) || (mScrollX > mMaxScrollX && 700 i == getChildCount() -1 )) { 701 cl.setBackgroundAlphaMultiplier( 702 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 703 mOverScrollPageIndex = i; 704 } else if (mOverScrollPageIndex != i) { 705 cl.setBackgroundAlphaMultiplier( 706 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 707 708 } 709 710 float rotation = WORKSPACE_ROTATION * scrollProgress; 711 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 712 cl.setTranslationX(translationX); 713 714 cl.setRotationY(rotation); 715 } 716 } 717 } 718 719 protected void onAttachedToWindow() { 720 super.onAttachedToWindow(); 721 computeScroll(); 722 mDragController.setWindowToken(getWindowToken()); 723 } 724 725 @Override 726 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 727 super.onLayout(changed, left, top, right, bottom); 728 729 // if shrinkToBottom() is called on initialization, it has to be deferred 730 // until after the first call to onLayout so that it has the correct width 731 if (mWaitingToShrink) { 732 // shrink can trigger a synchronous onLayout call, so we 733 // post this to avoid a stack overflow / tangled onLayout calls 734 post(new Runnable() { 735 public void run() { 736 shrink(mWaitingToShrinkState, false); 737 mWaitingToShrink = false; 738 } 739 }); 740 } 741 742 if (LauncherApplication.isInPlaceRotationEnabled()) { 743 // When the device is rotated, the scroll position of the current screen 744 // needs to be refreshed 745 setCurrentPage(getCurrentPage()); 746 } 747 } 748 749 @Override 750 protected void onDraw(Canvas canvas) { 751 // Draw the background gradient if necessary 752 if (mBackground != null && mBackgroundAlpha > 0.0f) { 753 int alpha = (int) (mBackgroundAlpha * 255); 754 mBackground.setAlpha(alpha); 755 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), getMeasuredHeight()); 756 mBackground.draw(canvas); 757 if (mDrawCustomizeTrayBackground) { 758 // Find out where to offset the gradient for the customization tray content 759 mCustomizationDrawer.getLocationOnScreen(mCustomizationDrawerPos); 760 final Matrix m = mCustomizationDrawer.getMatrix(); 761 mCustomizationDrawerTransformedPos[0] = 0.0f; 762 mCustomizationDrawerTransformedPos[1] = mCustomizationDrawerContent.getTop(); 763 m.mapPoints(mCustomizationDrawerTransformedPos); 764 765 // Draw the bg glow behind the gradient 766 mCustomizeTrayBackground.setAlpha(alpha); 767 mCustomizeTrayBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 768 getMeasuredHeight()); 769 mCustomizeTrayBackground.draw(canvas); 770 771 // Draw the bg gradient 772 final int offset = (int) (mCustomizationDrawerPos[1] + 773 mCustomizationDrawerTransformedPos[1]); 774 mBackground.setBounds(mScrollX, offset, mScrollX + getMeasuredWidth(), 775 offset + getMeasuredHeight()); 776 mBackground.draw(canvas); 777 } 778 } 779 super.onDraw(canvas); 780 } 781 782 @Override 783 protected void dispatchDraw(Canvas canvas) { 784 if (mIsSmall || mIsInUnshrinkAnimation) { 785 // Draw all the workspaces if we're small 786 final int pageCount = getChildCount(); 787 final long drawingTime = getDrawingTime(); 788 for (int i = 0; i < pageCount; i++) { 789 final View page = (View) getChildAt(i); 790 791 drawChild(canvas, page, drawingTime); 792 } 793 } else { 794 super.dispatchDraw(canvas); 795 796 final int width = getWidth(); 797 final int height = getHeight(); 798 799 // In portrait orientation, draw the glowing edge when dragging to adjacent screens 800 if (mInScrollArea && (height > width)) { 801 final int pageHeight = getChildAt(0).getHeight(); 802 803 // This determines the height of the glowing edge: 90% of the page height 804 final int padding = (int) ((height - pageHeight) * 0.5f + pageHeight * 0.1f); 805 806 final CellLayout leftPage = (CellLayout) getChildAt(mCurrentPage - 1); 807 final CellLayout rightPage = (CellLayout) getChildAt(mCurrentPage + 1); 808 809 if (leftPage != null && leftPage.getIsDragOverlapping()) { 810 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left); 811 d.setBounds(mScrollX, padding, mScrollX + d.getIntrinsicWidth(), height - padding); 812 d.draw(canvas); 813 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 814 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right); 815 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), padding, mScrollX + width, height - padding); 816 d.draw(canvas); 817 } 818 } 819 820 if (mDropView != null) { 821 // We are animating an item that was just dropped on the home screen. 822 // Render its View in the current animation position. 823 canvas.save(Canvas.MATRIX_SAVE_FLAG); 824 final int xPos = mDropViewPos[0] - mDropView.getScrollX(); 825 final int yPos = mDropViewPos[1] - mDropView.getScrollY(); 826 canvas.translate(xPos, yPos); 827 mDropView.draw(canvas); 828 canvas.restore(); 829 } 830 } 831 } 832 833 @Override 834 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 835 if (!mLauncher.isAllAppsVisible()) { 836 final Folder openFolder = getOpenFolder(); 837 if (openFolder != null) { 838 return openFolder.requestFocus(direction, previouslyFocusedRect); 839 } else { 840 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 841 } 842 } 843 return false; 844 } 845 846 @Override 847 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 848 if (!mLauncher.isAllAppsVisible()) { 849 final Folder openFolder = getOpenFolder(); 850 if (openFolder != null) { 851 openFolder.addFocusables(views, direction); 852 } else { 853 super.addFocusables(views, direction, focusableMode); 854 } 855 } 856 } 857 858 @Override 859 public boolean dispatchTouchEvent(MotionEvent ev) { 860 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 861 // (In XLarge mode, the workspace is shrunken below all apps, and responds to taps 862 // ie when you click on a mini-screen, it zooms back to that screen) 863 if (!LauncherApplication.isScreenXLarge() && mLauncher.isAllAppsVisible()) { 864 return false; 865 } 866 } 867 868 return super.dispatchTouchEvent(ev); 869 } 870 871 void enableChildrenCache(int fromPage, int toPage) { 872 if (fromPage > toPage) { 873 final int temp = fromPage; 874 fromPage = toPage; 875 toPage = temp; 876 } 877 878 final int screenCount = getChildCount(); 879 880 fromPage = Math.max(fromPage, 0); 881 toPage = Math.min(toPage, screenCount - 1); 882 883 for (int i = fromPage; i <= toPage; i++) { 884 final CellLayout layout = (CellLayout) getChildAt(i); 885 layout.setChildrenDrawnWithCacheEnabled(true); 886 layout.setChildrenDrawingCacheEnabled(true); 887 } 888 } 889 890 void clearChildrenCache() { 891 final int screenCount = getChildCount(); 892 for (int i = 0; i < screenCount; i++) { 893 final CellLayout layout = (CellLayout) getChildAt(i); 894 layout.setChildrenDrawnWithCacheEnabled(false); 895 } 896 } 897 898 @Override 899 public boolean onTouchEvent(MotionEvent ev) { 900 if (mLauncher.isAllAppsVisible()) { 901 // Cancel any scrolling that is in progress. 902 if (!mScroller.isFinished()) { 903 mScroller.abortAnimation(); 904 } 905 setCurrentPage(mCurrentPage); 906 907 if (mShrinkState == ShrinkState.BOTTOM_HIDDEN) { 908 mLauncher.showWorkspace(true); 909 // Let the events fall through to the CellLayouts because if they are not 910 // hit, then we get a crash due to a missing ACTION_DOWN touch event 911 } 912 913 return false; // We don't want the events 914 } 915 916 return super.onTouchEvent(ev); 917 } 918 919 @Override 920 protected void onWallpaperTap(MotionEvent ev) { 921 final int[] position = mTempCell; 922 getLocationOnScreen(position); 923 924 int pointerIndex = ev.getActionIndex(); 925 position[0] += (int) ev.getX(pointerIndex); 926 position[1] += (int) ev.getY(pointerIndex); 927 928 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 929 ev.getAction() == MotionEvent.ACTION_UP 930 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 931 position[0], position[1], 0, null); 932 } 933 934 public boolean isSmall() { 935 return mIsSmall; 936 } 937 938 private float getYScaleForScreen(int screen) { 939 int x = Math.abs(screen - 2); 940 941 // TODO: This should be generalized for use with arbitrary rotation angles. 942 switch(x) { 943 case 0: return EXTRA_SCALE_FACTOR_0; 944 case 1: return EXTRA_SCALE_FACTOR_1; 945 case 2: return EXTRA_SCALE_FACTOR_2; 946 } 947 return 1.0f; 948 } 949 950 public void shrink(ShrinkState shrinkState) { 951 shrink(shrinkState, true); 952 } 953 954 // we use this to shrink the workspace for the all apps view and the customize view 955 public void shrink(ShrinkState shrinkState, boolean animated) { 956 if (mFirstLayout) { 957 // (mFirstLayout == "first layout has not happened yet") 958 // if we get a call to shrink() as part of our initialization (for example, if 959 // Launcher is started in All Apps mode) then we need to wait for a layout call 960 // to get our width so we can layout the mini-screen views correctly 961 mWaitingToShrink = true; 962 mWaitingToShrinkState = shrinkState; 963 return; 964 } 965 mIsSmall = true; 966 mShrinkState = shrinkState; 967 968 // Stop any scrolling, move to the current page right away 969 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 970 if (!mIsDragInProcess) { 971 updateWhichPagesAcceptDrops(mShrinkState); 972 } 973 974 // we intercept and reject all touch events when we're small, so be sure to reset the state 975 mTouchState = TOUCH_STATE_REST; 976 mActivePointerId = INVALID_POINTER; 977 978 CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 979 if (currentPage.getBackgroundAlphaMultiplier() < 1.0f) { 980 currentPage.setBackgroundAlpha(0.0f); 981 } 982 currentPage.setBackgroundAlphaMultiplier(1.0f); 983 984 final Resources res = getResources(); 985 final int screenWidth = getWidth(); 986 final int screenHeight = getHeight(); 987 988 // Making the assumption that all pages have the same width as the 0th 989 final int pageWidth = getChildAt(0).getMeasuredWidth(); 990 final int pageHeight = getChildAt(0).getMeasuredHeight(); 991 992 final int scaledPageWidth = (int) (SHRINK_FACTOR * pageWidth); 993 final int scaledPageHeight = (int) (SHRINK_FACTOR * pageHeight); 994 final float extraScaledSpacing = res.getDimension(R.dimen.smallScreenExtraSpacing); 995 996 final int screenCount = getChildCount(); 997 float totalWidth = screenCount * scaledPageWidth + (screenCount - 1) * extraScaledSpacing; 998 999 boolean isPortrait = getMeasuredHeight() > getMeasuredWidth(); 1000 float newY = (isPortrait ? 1001 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginPortrait) : 1002 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginLandscape)); 1003 float finalAlpha = 1.0f; 1004 float extraShrinkFactor = 1.0f; 1005 if (shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1006 newY = screenHeight - newY - scaledPageHeight; 1007 } else if (shrinkState == ShrinkState.BOTTOM_HIDDEN) { 1008 1009 // We shrink and disappear to nothing in the case of all apps 1010 // (which is when we shrink to the bottom) 1011 newY = screenHeight - newY - scaledPageHeight; 1012 finalAlpha = 0.0f; 1013 } else if (shrinkState == ShrinkState.MIDDLE) { 1014 newY = screenHeight / 2 - scaledPageHeight / 2; 1015 finalAlpha = 1.0f; 1016 } else if (shrinkState == ShrinkState.TOP) { 1017 newY = (isPortrait ? 1018 getResources().getDimension(R.dimen.customizeSmallScreenVerticalMarginPortrait) : 1019 getResources().getDimension(R.dimen.customizeSmallScreenVerticalMarginLandscape)); 1020 } 1021 1022 // We animate all the screens to the centered position in workspace 1023 // At the same time, the screens become greyed/dimmed 1024 1025 // newX is initialized to the left-most position of the centered screens 1026 float newX = mScroller.getFinalX() + screenWidth / 2 - totalWidth / 2; 1027 1028 // We are going to scale about the center of the view, so we need to adjust the positions 1029 // of the views accordingly 1030 newX -= (pageWidth - scaledPageWidth) / 2.0f; 1031 newY -= (pageHeight - scaledPageHeight) / 2.0f; 1032 1033 if (mAnimator != null) { 1034 mAnimator.cancel(); 1035 } 1036 mAnimator = new AnimatorSet(); 1037 for (int i = 0; i < screenCount; i++) { 1038 CellLayout cl = (CellLayout) getChildAt(i); 1039 1040 float rotation = (-i + 2) * WORKSPACE_ROTATION; 1041 float rotationScaleX = (float) (1.0f / Math.cos(Math.PI * rotation / 180.0f)); 1042 float rotationScaleY = getYScaleForScreen(i); 1043 1044 if (animated) { 1045 final int duration = res.getInteger(R.integer.config_workspaceShrinkTime); 1046 1047 ObjectAnimator animWithInterpolator = ObjectAnimator.ofPropertyValuesHolder(cl, 1048 PropertyValuesHolder.ofFloat("x", newX), 1049 PropertyValuesHolder.ofFloat("y", newY), 1050 PropertyValuesHolder.ofFloat("scaleX", 1051 SHRINK_FACTOR * rotationScaleX * extraShrinkFactor), 1052 PropertyValuesHolder.ofFloat("scaleY", 1053 SHRINK_FACTOR * rotationScaleY * extraShrinkFactor), 1054 PropertyValuesHolder.ofFloat("backgroundAlpha", finalAlpha), 1055 PropertyValuesHolder.ofFloat("alpha", finalAlpha), 1056 PropertyValuesHolder.ofFloat("rotationY", rotation)); 1057 1058 animWithInterpolator.setDuration(duration); 1059 animWithInterpolator.setInterpolator(mZoomOutInterpolator); 1060 mAnimator.playTogether(animWithInterpolator); 1061 } else { 1062 cl.setX((int)newX); 1063 cl.setY((int)newY); 1064 cl.setScaleX(SHRINK_FACTOR * rotationScaleX * extraShrinkFactor); 1065 cl.setScaleY(SHRINK_FACTOR * rotationScaleY * extraShrinkFactor); 1066 cl.setBackgroundAlpha(finalAlpha); 1067 cl.setAlpha(finalAlpha); 1068 cl.setRotationY(rotation); 1069 } 1070 // increment newX for the next screen 1071 newX += scaledPageWidth + extraScaledSpacing; 1072 } 1073 setLayoutScale(1.0f); 1074 if (animated) { 1075 mAnimator.start(); 1076 } 1077 setChildrenDrawnWithCacheEnabled(true); 1078 1079 if (shrinkState == ShrinkState.TOP) { 1080 showBackgroundGradientForCustomizeTray(); 1081 } else { 1082 showBackgroundGradientForAllApps(); 1083 } 1084 } 1085 1086 /* 1087 * This interpolator emulates the rate at which the perceived scale of an object changes 1088 * as its distance from a camera increases. When this interpolator is applied to a scale 1089 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1090 * from the camera. 1091 */ 1092 static class ZInterpolator implements TimeInterpolator { 1093 private float focalLength; 1094 1095 public ZInterpolator(float foc) { 1096 focalLength = foc; 1097 } 1098 1099 public float getInterpolation(float input) { 1100 return (1.0f - focalLength / (focalLength + input)) / 1101 (1.0f - focalLength / (focalLength + 1.0f)); 1102 } 1103 } 1104 1105 /* 1106 * The exact reverse of ZInterpolator. 1107 */ 1108 static class InverseZInterpolator implements TimeInterpolator { 1109 private ZInterpolator zInterpolator; 1110 public InverseZInterpolator(float foc) { 1111 zInterpolator = new ZInterpolator(foc); 1112 } 1113 public float getInterpolation(float input) { 1114 return 1 - zInterpolator.getInterpolation(1 - input); 1115 } 1116 } 1117 1118 /* 1119 * ZInterpolator compounded with an ease-out. 1120 */ 1121 static class ZoomOutInterpolator implements TimeInterpolator { 1122 private final ZInterpolator zInterpolator = new ZInterpolator(0.2f); 1123 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(1.5f); 1124 1125 public float getInterpolation(float input) { 1126 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1127 } 1128 } 1129 1130 /* 1131 * InvereZInterpolator compounded with an ease-out. 1132 */ 1133 static class ZoomInInterpolator implements TimeInterpolator { 1134 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1135 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1136 1137 public float getInterpolation(float input) { 1138 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1139 } 1140 } 1141 1142 private final ZoomOutInterpolator mZoomOutInterpolator = new ZoomOutInterpolator(); 1143 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1144 1145 private void updateWhichPagesAcceptDrops(ShrinkState state) { 1146 updateWhichPagesAcceptDropsHelper(state, false, 1, 1); 1147 } 1148 1149 private void updateWhichPagesAcceptDropsDuringDrag(ShrinkState state, int spanX, int spanY) { 1150 updateWhichPagesAcceptDropsHelper(state, true, spanX, spanY); 1151 } 1152 1153 private void updateWhichPagesAcceptDropsHelper( 1154 ShrinkState state, boolean isDragHappening, int spanX, int spanY) { 1155 final int screenCount = getChildCount(); 1156 for (int i = 0; i < screenCount; i++) { 1157 CellLayout cl = (CellLayout) getChildAt(i); 1158 cl.setIsDragOccuring(isDragHappening); 1159 switch (state) { 1160 case TOP: 1161 cl.setIsDefaultDropTarget(i == mCurrentPage); 1162 case BOTTOM_HIDDEN: 1163 case BOTTOM_VISIBLE: 1164 if (!isDragHappening) { 1165 // even if a drag isn't happening, we don't want to show a screen as 1166 // accepting drops if it doesn't have at least one free cell 1167 spanX = 1; 1168 spanY = 1; 1169 } 1170 // the page accepts drops if we can find at least one empty spot 1171 cl.setAcceptsDrops(cl.findCellForSpan(null, spanX, spanY)); 1172 break; 1173 default: 1174 throw new RuntimeException( 1175 "updateWhichPagesAcceptDropsHelper passed an unhandled ShrinkState"); 1176 } 1177 } 1178 } 1179 1180 /* 1181 * 1182 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithItemMinSize) whenever we 1183 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1184 * 1185 * These methods mark the appropriate pages as accepting drops (which alters their visual 1186 * appearance). 1187 * 1188 */ 1189 public void onDragStartedWithItemSpans(int spanX, int spanY, Bitmap b) { 1190 mIsDragInProcess = true; 1191 1192 final Canvas canvas = new Canvas(); 1193 1194 // We need to add extra padding to the bitmap to make room for the glow effect 1195 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1196 1197 // The outline is used to visualize where the item will land if dropped 1198 mDragOutline = createDragOutline(b, canvas, bitmapPadding); 1199 1200 updateWhichPagesAcceptDropsDuringDrag(mShrinkState, spanX, spanY); 1201 } 1202 1203 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1204 // never dragged over 1205 public void onDragStopped() { 1206 mIsDragInProcess = false; 1207 updateWhichPagesAcceptDrops(mShrinkState); 1208 } 1209 1210 @Override 1211 protected boolean handlePagingClicks() { 1212 return true; 1213 } 1214 1215 // We call this when we trigger an unshrink by clicking on the CellLayout cl 1216 public void unshrink(CellLayout clThatWasClicked) { 1217 unshrink(clThatWasClicked, false); 1218 } 1219 1220 public void unshrink(CellLayout clThatWasClicked, boolean springLoaded) { 1221 int newCurrentPage = indexOfChild(clThatWasClicked); 1222 if (mIsSmall) { 1223 if (springLoaded) { 1224 setLayoutScale(SPRING_LOADED_DRAG_SHRINK_FACTOR); 1225 } 1226 moveToNewPageWithoutMovingCellLayouts(newCurrentPage); 1227 unshrink(true, springLoaded); 1228 } 1229 } 1230 1231 1232 public void enterSpringLoadedDragMode(CellLayout clThatWasClicked) { 1233 mShrinkState = ShrinkState.SPRING_LOADED; 1234 unshrink(clThatWasClicked, true); 1235 mDragTargetLayout.onDragEnter(); 1236 } 1237 1238 public void exitSpringLoadedDragMode(ShrinkState shrinkState) { 1239 shrink(shrinkState); 1240 if (mDragTargetLayout != null) { 1241 mDragTargetLayout.onDragExit(); 1242 } 1243 } 1244 1245 void unshrink(boolean animated) { 1246 unshrink(animated, false); 1247 } 1248 1249 void unshrink(boolean animated, boolean springLoaded) { 1250 if (mIsSmall) { 1251 float finalScaleFactor = 1.0f; 1252 float finalBackgroundAlpha = 0.0f; 1253 if (springLoaded) { 1254 finalScaleFactor = SPRING_LOADED_DRAG_SHRINK_FACTOR; 1255 finalBackgroundAlpha = 1.0f; 1256 } else { 1257 mIsSmall = false; 1258 } 1259 if (mAnimator != null) { 1260 mAnimator.cancel(); 1261 } 1262 1263 mAnimator = new AnimatorSet(); 1264 final int screenCount = getChildCount(); 1265 1266 final int duration = getResources().getInteger(R.integer.config_workspaceUnshrinkTime); 1267 for (int i = 0; i < screenCount; i++) { 1268 final CellLayout cl = (CellLayout)getChildAt(i); 1269 float finalAlphaValue = (i == mCurrentPage) ? 1.0f : 0.0f; 1270 float rotation = 0.0f; 1271 1272 if (i < mCurrentPage) { 1273 rotation = WORKSPACE_ROTATION; 1274 } else if (i > mCurrentPage) { 1275 rotation = -WORKSPACE_ROTATION; 1276 } 1277 1278 float translation = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1279 1280 if (animated) { 1281 ObjectAnimator animWithInterpolator = ObjectAnimator.ofPropertyValuesHolder(cl, 1282 PropertyValuesHolder.ofFloat("translationX", translation), 1283 PropertyValuesHolder.ofFloat("translationY", 0.0f), 1284 PropertyValuesHolder.ofFloat("scaleX", finalScaleFactor), 1285 PropertyValuesHolder.ofFloat("scaleY", finalScaleFactor), 1286 PropertyValuesHolder.ofFloat("backgroundAlpha", finalBackgroundAlpha), 1287 PropertyValuesHolder.ofFloat("alpha", finalAlphaValue), 1288 PropertyValuesHolder.ofFloat("rotationY", rotation)); 1289 animWithInterpolator.setDuration(duration); 1290 animWithInterpolator.setInterpolator(mZoomInInterpolator); 1291 mAnimator.playTogether(animWithInterpolator); 1292 } else { 1293 cl.setTranslationX(translation); 1294 cl.setTranslationY(0.0f); 1295 cl.setScaleX(finalScaleFactor); 1296 cl.setScaleY(finalScaleFactor); 1297 cl.setBackgroundAlpha(0.0f); 1298 cl.setAlpha(finalAlphaValue); 1299 cl.setRotationY(rotation); 1300 } 1301 } 1302 1303 if (animated) { 1304 // If we call this when we're not animated, onAnimationEnd is never called on 1305 // the listener; make sure we only use the listener when we're actually animating 1306 mAnimator.addListener(mUnshrinkAnimationListener); 1307 mAnimator.start(); 1308 } 1309 } 1310 1311 if (!springLoaded) { 1312 hideBackgroundGradient(); 1313 } 1314 } 1315 1316 /** 1317 * Draw the View v into the given Canvas. 1318 * 1319 * @param v the view to draw 1320 * @param destCanvas the canvas to draw on 1321 * @param padding the horizontal and vertical padding to use when drawing 1322 */ 1323 private void drawDragView(View v, Canvas destCanvas, int padding) { 1324 final Rect clipRect = mTempRect; 1325 v.getDrawingRect(clipRect); 1326 1327 // For a TextView, adjust the clip rect so that we don't include the text label 1328 if (v instanceof BubbleTextView) { 1329 final BubbleTextView tv = (BubbleTextView) v; 1330 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1331 tv.getLayout().getLineTop(0); 1332 } else if (v instanceof TextView) { 1333 final TextView tv = (TextView) v; 1334 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1335 tv.getLayout().getLineTop(0); 1336 } 1337 1338 // Draw the View into the bitmap. 1339 // The translate of scrollX and scrollY is necessary when drawing TextViews, because 1340 // they set scrollX and scrollY to large values to achieve centered text 1341 1342 destCanvas.save(); 1343 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1344 destCanvas.clipRect(clipRect, Op.REPLACE); 1345 v.draw(destCanvas); 1346 destCanvas.restore(); 1347 } 1348 1349 /** 1350 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1351 * Responsibility for the bitmap is transferred to the caller. 1352 */ 1353 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1354 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1355 final Bitmap b = Bitmap.createBitmap( 1356 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1357 1358 canvas.setBitmap(b); 1359 drawDragView(v, canvas, padding); 1360 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1361 return b; 1362 } 1363 1364 /** 1365 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1366 * Responsibility for the bitmap is transferred to the caller. 1367 */ 1368 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding) { 1369 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1370 final Bitmap b = Bitmap.createBitmap( 1371 orig.getWidth() + padding, orig.getHeight() + padding, Bitmap.Config.ARGB_8888); 1372 1373 canvas.setBitmap(b); 1374 canvas.drawBitmap(orig, 0, 0, new Paint()); 1375 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1376 1377 return b; 1378 } 1379 1380 /** 1381 * Creates a drag outline to represent a drop (that we don't have the actual information for 1382 * yet). May be changed in the future to alter the drop outline slightly depending on the 1383 * clip description mime data. 1384 */ 1385 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 1386 Resources r = getResources(); 1387 final int outlineColor = r.getColor(R.color.drag_outline_color); 1388 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 1389 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 1390 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 1391 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 1392 final Bitmap b = Bitmap.createBitmap( 1393 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 1394 1395 canvas.setBitmap(b); 1396 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 1397 rectRadius, rectRadius, mExternalDragOutlinePaint); 1398 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1399 return b; 1400 } 1401 1402 /** 1403 * Returns a new bitmap to show when the given View is being dragged around. 1404 * Responsibility for the bitmap is transferred to the caller. 1405 */ 1406 private Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1407 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1408 final Bitmap b = Bitmap.createBitmap( 1409 mDragOutline.getWidth(), mDragOutline.getHeight(), Bitmap.Config.ARGB_8888); 1410 1411 canvas.setBitmap(b); 1412 canvas.drawBitmap(mDragOutline, 0, 0, null); 1413 drawDragView(v, canvas, padding); 1414 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 1415 1416 return b; 1417 } 1418 1419 void startDrag(CellLayout.CellInfo cellInfo) { 1420 View child = cellInfo.cell; 1421 1422 // Make sure the drag was started by a long press as opposed to a long click. 1423 if (!child.isInTouchMode()) { 1424 return; 1425 } 1426 1427 mDragInfo = cellInfo; 1428 mDragInfo.screen = mCurrentPage; 1429 1430 CellLayout current = getCurrentDropLayout(); 1431 1432 current.onDragChild(child); 1433 1434 child.clearFocus(); 1435 child.setPressed(false); 1436 1437 final Canvas canvas = new Canvas(); 1438 1439 // We need to add extra padding to the bitmap to make room for the glow effect 1440 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1441 1442 // The outline is used to visualize where the item will land if dropped 1443 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 1444 1445 // The drag bitmap follows the touch point around on the screen 1446 final Bitmap b = createDragBitmap(child, canvas, bitmapPadding); 1447 1448 final int bmpWidth = b.getWidth(); 1449 final int bmpHeight = b.getHeight(); 1450 child.getLocationOnScreen(mTempXY); 1451 final int screenX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 1452 final int screenY = (int) mTempXY[1] + (child.getHeight() - bmpHeight) / 2; 1453 mDragController.startDrag(b, screenX, screenY, 0, 0, bmpWidth, bmpHeight, this, 1454 child.getTag(), DragController.DRAG_ACTION_MOVE, null); 1455 b.recycle(); 1456 } 1457 1458 void addApplicationShortcut(ShortcutInfo info, int screen, int cellX, int cellY, 1459 boolean insertAtFirst, int intersectX, int intersectY) { 1460 final CellLayout cellLayout = (CellLayout) getChildAt(screen); 1461 View view = mLauncher.createShortcut(R.layout.application, cellLayout, (ShortcutInfo) info); 1462 1463 final int[] cellXY = new int[2]; 1464 cellLayout.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1465 addInScreen(view, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1466 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 1467 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 1468 cellXY[0], cellXY[1]); 1469 } 1470 1471 private void setPositionForDropAnimation( 1472 View dragView, int dragViewX, int dragViewY, View parent, View child) { 1473 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 1474 1475 // Based on the position of the drag view, find the top left of the original view 1476 int viewX = dragViewX + (dragView.getWidth() - child.getWidth()) / 2; 1477 int viewY = dragViewY + (dragView.getHeight() - child.getHeight()) / 2; 1478 viewX += getResources().getInteger(R.integer.config_dragViewOffsetX); 1479 viewY += getResources().getInteger(R.integer.config_dragViewOffsetY); 1480 1481 // Set its old pos (in the new parent's coordinates); it will be animated 1482 // in animateViewIntoPosition after the next layout pass 1483 lp.oldX = viewX - (parent.getLeft() - mScrollX); 1484 lp.oldY = viewY - (parent.getTop() - mScrollY); 1485 } 1486 1487 public void animateViewIntoPosition(final View view) { 1488 final CellLayout parent = (CellLayout) view.getParent(); 1489 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 1490 1491 // Convert the animation params to be relative to the Workspace, not the CellLayout 1492 final int fromX = lp.oldX + parent.getLeft(); 1493 final int fromY = lp.oldY + parent.getTop(); 1494 1495 final int dx = lp.x - lp.oldX; 1496 final int dy = lp.y - lp.oldY; 1497 1498 // Calculate the duration of the animation based on the object's distance 1499 final float dist = (float) Math.sqrt(dx*dx + dy*dy); 1500 final Resources res = getResources(); 1501 final float maxDist = (float) res.getInteger(R.integer.config_dropAnimMaxDist); 1502 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration); 1503 if (dist < maxDist) { 1504 duration *= mQuintEaseOutInterpolator.getInterpolation(dist / maxDist); 1505 } 1506 1507 if (mDropAnim != null) { 1508 mDropAnim.end(); 1509 } 1510 mDropAnim = new ValueAnimator(); 1511 mDropAnim.setInterpolator(mQuintEaseOutInterpolator); 1512 1513 // The view is invisible during the animation; we render it manually. 1514 mDropAnim.addListener(new AnimatorListenerAdapter() { 1515 public void onAnimationStart(Animator animation) { 1516 // Set this here so that we don't render it until the animation begins 1517 mDropView = view; 1518 } 1519 1520 public void onAnimationEnd(Animator animation) { 1521 if (mDropView != null) { 1522 mDropView.setVisibility(View.VISIBLE); 1523 mDropView = null; 1524 } 1525 } 1526 }); 1527 1528 mDropAnim.setDuration(duration); 1529 mDropAnim.setFloatValues(0.0f, 1.0f); 1530 mDropAnim.removeAllUpdateListeners(); 1531 mDropAnim.addUpdateListener(new AnimatorUpdateListener() { 1532 public void onAnimationUpdate(ValueAnimator animation) { 1533 final float percent = (Float) animation.getAnimatedValue(); 1534 // Invalidate the old position 1535 invalidate(mDropViewPos[0], mDropViewPos[1], 1536 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 1537 1538 mDropViewPos[0] = fromX + (int) (percent * dx + 0.5f); 1539 mDropViewPos[1] = fromY + (int) (percent * dy + 0.5f); 1540 invalidate(mDropViewPos[0], mDropViewPos[1], 1541 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 1542 } 1543 }); 1544 1545 view.setVisibility(View.INVISIBLE); 1546 mDropAnim.start(); 1547 } 1548 1549 /** 1550 * {@inheritDoc} 1551 */ 1552 public boolean acceptDrop(DragSource source, int x, int y, 1553 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 1554 1555 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1556 if (source != this) { 1557 // Don't accept the drop if we're not over a screen at time of drop 1558 if (mDragTargetLayout == null || !mDragTargetLayout.getAcceptsDrops()) { 1559 return false; 1560 } 1561 1562 final CellLayout.CellInfo dragCellInfo = mDragInfo; 1563 final int spanX = dragCellInfo == null ? 1 : dragCellInfo.spanX; 1564 final int spanY = dragCellInfo == null ? 1 : dragCellInfo.spanY; 1565 1566 final View ignoreView = dragCellInfo == null ? null : dragCellInfo.cell; 1567 1568 // Don't accept the drop if there's no room for the item 1569 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 1570 mLauncher.showOutOfSpaceMessage(); 1571 return false; 1572 } 1573 } 1574 return true; 1575 } 1576 1577 public void onDrop(DragSource source, int x, int y, int xOffset, int yOffset, 1578 DragView dragView, Object dragInfo) { 1579 1580 int originX = x - xOffset; 1581 int originY = y - yOffset; 1582 1583 if (mIsSmall || mIsInUnshrinkAnimation) { 1584 // get originX and originY in the local coordinate system of the screen 1585 mTempOriginXY[0] = originX; 1586 mTempOriginXY[1] = originY; 1587 mapPointFromSelfToChild(mDragTargetLayout, mTempOriginXY); 1588 originX = (int)mTempOriginXY[0]; 1589 originY = (int)mTempOriginXY[1]; 1590 } 1591 1592 if (source != this) { 1593 if (!mIsSmall || mWasSpringLoadedOnDragExit) { 1594 onDropExternal(originX, originY, dragInfo, mDragTargetLayout, false); 1595 } else { 1596 // if we drag and drop to small screens, don't pass the touch x/y coords (when we 1597 // enable spring-loaded adding, however, we do want to pass the touch x/y coords) 1598 onDropExternal(-1, -1, dragInfo, mDragTargetLayout, false); 1599 } 1600 } else if (mDragInfo != null) { 1601 final View cell = mDragInfo.cell; 1602 CellLayout dropTargetLayout = mDragTargetLayout; 1603 1604 // Handle the case where the user drops when in the scroll area. 1605 // This is treated as a drop on the adjacent page. 1606 if (dropTargetLayout == null && mInScrollArea) { 1607 if (mPendingScrollDirection == DragController.SCROLL_LEFT) { 1608 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage - 1); 1609 } else if (mPendingScrollDirection == DragController.SCROLL_RIGHT) { 1610 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage + 1); 1611 } 1612 } 1613 1614 if (dropTargetLayout != null) { 1615 // Move internally 1616 mTargetCell = findNearestVacantArea(originX, originY, 1617 mDragInfo.spanX, mDragInfo.spanY, cell, dropTargetLayout, 1618 mTargetCell); 1619 1620 final int screen = (mTargetCell == null) ? 1621 mDragInfo.screen : indexOfChild(dropTargetLayout); 1622 1623 if (screen != mCurrentPage) { 1624 snapToPage(screen); 1625 } 1626 1627 if (mTargetCell != null) { 1628 if (screen != mDragInfo.screen) { 1629 // Reparent the view 1630 ((CellLayout) getChildAt(mDragInfo.screen)).removeView(cell); 1631 addInScreen(cell, screen, mTargetCell[0], mTargetCell[1], 1632 mDragInfo.spanX, mDragInfo.spanY); 1633 } 1634 1635 // update the item's position after drop 1636 final ItemInfo info = (ItemInfo) cell.getTag(); 1637 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 1638 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 1639 lp.cellX = mTargetCell[0]; 1640 lp.cellY = mTargetCell[1]; 1641 cell.setId(LauncherModel.getCellLayoutChildId(-1, mDragInfo.screen, 1642 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 1643 1644 LauncherModel.moveItemInDatabase(mLauncher, info, 1645 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 1646 lp.cellX, lp.cellY); 1647 } 1648 } 1649 1650 final CellLayout parent = (CellLayout) cell.getParent(); 1651 1652 // Prepare it to be animated into its new position 1653 // This must be called after the view has been re-parented 1654 setPositionForDropAnimation(dragView, originX, originY, parent, cell); 1655 boolean animateDrop = !mWasSpringLoadedOnDragExit; 1656 parent.onDropChild(cell, animateDrop); 1657 } 1658 } 1659 1660 public void onDragEnter(DragSource source, int x, int y, int xOffset, 1661 int yOffset, DragView dragView, Object dragInfo) { 1662 mDragTargetLayout = null; // Reset the drag state 1663 1664 if (!mIsSmall) { 1665 mDragTargetLayout = getCurrentDropLayout(); 1666 mDragTargetLayout.onDragEnter(); 1667 showOutlines(); 1668 } 1669 } 1670 1671 public DropTarget getDropTargetDelegate(DragSource source, int x, int y, 1672 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 1673 1674 if (mIsSmall || mIsInUnshrinkAnimation) { 1675 // If we're shrunken, don't let anyone drag on folders/etc that are on the mini-screens 1676 return null; 1677 } 1678 // We may need to delegate the drag to a child view. If a 1x1 item 1679 // would land in a cell occupied by a DragTarget (e.g. a Folder), 1680 // then drag events should be handled by that child. 1681 1682 ItemInfo item = (ItemInfo)dragInfo; 1683 CellLayout currentLayout = getCurrentDropLayout(); 1684 1685 int dragPointX, dragPointY; 1686 if (item.spanX == 1 && item.spanY == 1) { 1687 // For a 1x1, calculate the drop cell exactly as in onDragOver 1688 dragPointX = x - xOffset; 1689 dragPointY = y - yOffset; 1690 } else { 1691 // Otherwise, use the exact drag coordinates 1692 dragPointX = x; 1693 dragPointY = y; 1694 } 1695 dragPointX += mScrollX - currentLayout.getLeft(); 1696 dragPointY += mScrollY - currentLayout.getTop(); 1697 1698 // If we are dragging over a cell that contains a DropTarget that will 1699 // accept the drop, delegate to that DropTarget. 1700 final int[] cellXY = mTempCell; 1701 currentLayout.estimateDropCell(dragPointX, dragPointY, item.spanX, item.spanY, cellXY); 1702 View child = currentLayout.getChildAt(cellXY[0], cellXY[1]); 1703 if (child instanceof DropTarget) { 1704 DropTarget target = (DropTarget)child; 1705 if (target.acceptDrop(source, x, y, xOffset, yOffset, dragView, dragInfo)) { 1706 return target; 1707 } 1708 } 1709 return null; 1710 } 1711 1712 /** 1713 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 1714 * in the returned structure related to the widgets that match the drop (or a null list if it is 1715 * a shortcut drop). If the drop is not accepted then a null structure is returned. 1716 */ 1717 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 1718 final LauncherModel model = mLauncher.getModel(); 1719 final ClipDescription desc = event.getClipDescription(); 1720 final int mimeTypeCount = desc.getMimeTypeCount(); 1721 for (int i = 0; i < mimeTypeCount; ++i) { 1722 final String mimeType = desc.getMimeType(i); 1723 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 1724 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 1725 } else { 1726 final List<WidgetMimeTypeHandlerData> widgets = 1727 model.resolveWidgetsForMimeType(mContext, mimeType); 1728 if (widgets.size() > 0) { 1729 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 1730 } 1731 } 1732 } 1733 return null; 1734 } 1735 1736 /** 1737 * Global drag and drop handler 1738 */ 1739 @Override 1740 public boolean onDragEvent(DragEvent event) { 1741 final ClipDescription desc = event.getClipDescription(); 1742 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 1743 final int[] pos = new int[2]; 1744 layout.getLocationOnScreen(pos); 1745 // We need to offset the drag coordinates to layout coordinate space 1746 final int x = (int) event.getX() - pos[0]; 1747 final int y = (int) event.getY() - pos[1]; 1748 1749 switch (event.getAction()) { 1750 case DragEvent.ACTION_DRAG_STARTED: { 1751 // Validate this drag 1752 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 1753 if (test != null) { 1754 boolean isShortcut = (test.second == null); 1755 if (isShortcut) { 1756 // Check if we have enough space on this screen to add a new shortcut 1757 if (!layout.findCellForSpan(pos, 1, 1)) { 1758 Toast.makeText(mContext, mContext.getString(R.string.out_of_space), 1759 Toast.LENGTH_SHORT).show(); 1760 return false; 1761 } 1762 } 1763 } else { 1764 // Show error message if we couldn't accept any of the items 1765 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 1766 Toast.LENGTH_SHORT).show(); 1767 return false; 1768 } 1769 1770 // Create the drag outline 1771 // We need to add extra padding to the bitmap to make room for the glow effect 1772 final Canvas canvas = new Canvas(); 1773 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1774 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 1775 1776 // Show the current page outlines to indicate that we can accept this drop 1777 showOutlines(); 1778 layout.setIsDragOccuring(true); 1779 layout.onDragEnter(); 1780 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 1781 1782 return true; 1783 } 1784 case DragEvent.ACTION_DRAG_LOCATION: 1785 // Visualize the drop location 1786 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 1787 return true; 1788 case DragEvent.ACTION_DROP: { 1789 // Try and add any shortcuts 1790 final LauncherModel model = mLauncher.getModel(); 1791 final ClipData data = event.getClipData(); 1792 1793 // We assume that the mime types are ordered in descending importance of 1794 // representation. So we enumerate the list of mime types and alert the 1795 // user if any widgets can handle the drop. Only the most preferred 1796 // representation will be handled. 1797 pos[0] = x; 1798 pos[1] = y; 1799 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 1800 if (test != null) { 1801 final int index = test.first; 1802 final List<WidgetMimeTypeHandlerData> widgets = test.second; 1803 final boolean isShortcut = (widgets == null); 1804 final String mimeType = desc.getMimeType(index); 1805 if (isShortcut) { 1806 final Intent intent = data.getItem(index).getIntent(); 1807 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 1808 onDropExternal(x, y, info, layout, false); 1809 } else { 1810 if (widgets.size() == 1) { 1811 // If there is only one item, then go ahead and add and configure 1812 // that widget 1813 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 1814 final PendingAddWidgetInfo createInfo = 1815 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 1816 mLauncher.addAppWidgetFromDrop(createInfo, mCurrentPage, pos); 1817 } else { 1818 // Show the widget picker dialog if there is more than one widget 1819 // that can handle this data type 1820 final InstallWidgetReceiver.WidgetListAdapter adapter = 1821 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 1822 data, widgets, layout, mCurrentPage, pos); 1823 final AlertDialog.Builder builder = 1824 new AlertDialog.Builder(mContext); 1825 builder.setAdapter(adapter, adapter); 1826 builder.setCancelable(true); 1827 builder.setTitle(mContext.getString( 1828 R.string.external_drop_widget_pick_title)); 1829 builder.setIcon(R.drawable.ic_no_applications); 1830 builder.show(); 1831 } 1832 } 1833 } 1834 return true; 1835 } 1836 case DragEvent.ACTION_DRAG_ENDED: 1837 // Hide the page outlines after the drop 1838 layout.setIsDragOccuring(false); 1839 layout.onDragExit(); 1840 hideOutlines(); 1841 return true; 1842 } 1843 return super.onDragEvent(event); 1844 } 1845 1846 /* 1847 * 1848 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 1849 * coordinate space. The argument xy is modified with the return result. 1850 * 1851 */ 1852 void mapPointFromSelfToChild(View v, float[] xy) { 1853 mapPointFromSelfToChild(v, xy, null); 1854 } 1855 1856 /* 1857 * 1858 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 1859 * coordinate space. The argument xy is modified with the return result. 1860 * 1861 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 1862 * computing it itself; we use this to avoid redundant matrix inversions in 1863 * findMatchingPageForDragOver 1864 * 1865 */ 1866 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 1867 if (cachedInverseMatrix == null) { 1868 v.getMatrix().invert(mTempInverseMatrix); 1869 cachedInverseMatrix = mTempInverseMatrix; 1870 } 1871 xy[0] = xy[0] + mScrollX - v.getLeft(); 1872 xy[1] = xy[1] + mScrollY - v.getTop(); 1873 cachedInverseMatrix.mapPoints(xy); 1874 } 1875 1876 /* 1877 * 1878 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 1879 * the parent View's coordinate space. The argument xy is modified with the return result. 1880 * 1881 */ 1882 void mapPointFromChildToSelf(View v, float[] xy) { 1883 v.getMatrix().mapPoints(xy); 1884 xy[0] -= (mScrollX - v.getLeft()); 1885 xy[1] -= (mScrollY - v.getTop()); 1886 } 1887 1888 static private float squaredDistance(float[] point1, float[] point2) { 1889 float distanceX = point1[0] - point2[0]; 1890 float distanceY = point2[1] - point2[1]; 1891 return distanceX * distanceX + distanceY * distanceY; 1892 } 1893 1894 /* 1895 * 1896 * Returns true if the passed CellLayout cl overlaps with dragView 1897 * 1898 */ 1899 boolean overlaps(CellLayout cl, DragView dragView, 1900 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 1901 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 1902 final float[] draggedItemTopLeft = mTempDragCoordinates; 1903 draggedItemTopLeft[0] = dragViewX + dragView.getScaledDragRegionXOffset(); 1904 draggedItemTopLeft[1] = dragViewY + dragView.getScaledDragRegionYOffset(); 1905 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 1906 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getScaledDragRegionWidth(); 1907 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getScaledDragRegionHeight(); 1908 1909 // Transform the dragged item's top left coordinates 1910 // to the CellLayout's local coordinates 1911 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 1912 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 1913 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 1914 1915 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 1916 // Transform the dragged item's bottom right coordinates 1917 // to the CellLayout's local coordinates 1918 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 1919 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 1920 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 1921 1922 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 1923 float overlap = (overlapRegionRight - overlapRegionLeft) * 1924 (overlapRegionBottom - overlapRegionTop); 1925 if (overlap > 0) { 1926 return true; 1927 } 1928 } 1929 } 1930 return false; 1931 } 1932 1933 /* 1934 * 1935 * This method returns the CellLayout that is currently being dragged to. In order to drag 1936 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 1937 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 1938 * 1939 * Return null if no CellLayout is currently being dragged over 1940 * 1941 */ 1942 private CellLayout findMatchingPageForDragOver( 1943 DragView dragView, int originX, int originY, int offsetX, int offsetY) { 1944 // We loop through all the screens (ie CellLayouts) and see which ones overlap 1945 // with the item being dragged and then choose the one that's closest to the touch point 1946 final int screenCount = getChildCount(); 1947 CellLayout bestMatchingScreen = null; 1948 float smallestDistSoFar = Float.MAX_VALUE; 1949 1950 for (int i = 0; i < screenCount; i++) { 1951 CellLayout cl = (CellLayout)getChildAt(i); 1952 1953 final float[] touchXy = mTempTouchCoordinates; 1954 touchXy[0] = originX + offsetX; 1955 touchXy[1] = originY + offsetY; 1956 1957 // Transform the touch coordinates to the CellLayout's local coordinates 1958 // If the touch point is within the bounds of the cell layout, we can return immediately 1959 cl.getMatrix().invert(mTempInverseMatrix); 1960 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 1961 1962 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 1963 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 1964 return cl; 1965 } 1966 1967 if (overlaps(cl, dragView, originX, originY, mTempInverseMatrix)) { 1968 // Get the center of the cell layout in screen coordinates 1969 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 1970 cellLayoutCenter[0] = cl.getWidth()/2; 1971 cellLayoutCenter[1] = cl.getHeight()/2; 1972 mapPointFromChildToSelf(cl, cellLayoutCenter); 1973 1974 touchXy[0] = originX + offsetX; 1975 touchXy[1] = originY + offsetY; 1976 1977 // Calculate the distance between the center of the CellLayout 1978 // and the touch point 1979 float dist = squaredDistance(touchXy, cellLayoutCenter); 1980 1981 if (dist < smallestDistSoFar) { 1982 smallestDistSoFar = dist; 1983 bestMatchingScreen = cl; 1984 } 1985 } 1986 } 1987 return bestMatchingScreen; 1988 } 1989 1990 public void onDragOver(DragSource source, int x, int y, int xOffset, int yOffset, 1991 DragView dragView, Object dragInfo) { 1992 // When touch is inside the scroll area, skip dragOver actions for the current screen 1993 if (!mInScrollArea) { 1994 CellLayout layout; 1995 int originX = x - xOffset; 1996 int originY = y - yOffset; 1997 boolean shrunken = mIsSmall || mIsInUnshrinkAnimation; 1998 if (shrunken) { 1999 layout = findMatchingPageForDragOver( 2000 dragView, originX, originY, xOffset, yOffset); 2001 2002 if (layout != mDragTargetLayout) { 2003 if (mDragTargetLayout != null) { 2004 mDragTargetLayout.setIsDragOverlapping(false); 2005 mSpringLoadedDragController.onDragExit(); 2006 } 2007 mDragTargetLayout = layout; 2008 if (mDragTargetLayout != null && mDragTargetLayout.getAcceptsDrops()) { 2009 mDragTargetLayout.setIsDragOverlapping(true); 2010 mSpringLoadedDragController.onDragEnter(mDragTargetLayout); 2011 } 2012 } 2013 } else { 2014 layout = getCurrentDropLayout(); 2015 if (layout != mDragTargetLayout) { 2016 if (mDragTargetLayout != null) { 2017 mDragTargetLayout.onDragExit(); 2018 } 2019 layout.onDragEnter(); 2020 mDragTargetLayout = layout; 2021 } 2022 } 2023 if (!shrunken || mShrinkState == ShrinkState.SPRING_LOADED) { 2024 layout = getCurrentDropLayout(); 2025 2026 final ItemInfo item = (ItemInfo)dragInfo; 2027 if (dragInfo instanceof LauncherAppWidgetInfo) { 2028 LauncherAppWidgetInfo widgetInfo = (LauncherAppWidgetInfo)dragInfo; 2029 2030 if (widgetInfo.spanX == -1) { 2031 // Calculate the grid spans needed to fit this widget 2032 int[] spans = layout.rectToCell( 2033 widgetInfo.minWidth, widgetInfo.minHeight, null); 2034 item.spanX = spans[0]; 2035 item.spanY = spans[1]; 2036 } 2037 } 2038 2039 if (source instanceof AllAppsPagedView) { 2040 // This is a hack to fix the point used to determine which cell an icon from 2041 // the all apps screen is over 2042 if (item != null && item.spanX == 1 && layout != null) { 2043 int dragRegionLeft = (dragView.getWidth() - layout.getCellWidth()) / 2; 2044 2045 originX += dragRegionLeft - dragView.getDragRegionLeft(); 2046 if (dragView.getDragRegionWidth() != layout.getCellWidth()) { 2047 dragView.setDragRegion(dragView.getDragRegionLeft(), 2048 dragView.getDragRegionTop(), 2049 layout.getCellWidth(), 2050 dragView.getDragRegionHeight()); 2051 } 2052 } 2053 } 2054 2055 if (mDragTargetLayout != null) { 2056 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2057 float[] localOrigin = { originX, originY }; 2058 mapPointFromSelfToChild(mDragTargetLayout, localOrigin, null); 2059 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2060 (int) localOrigin[0], (int) localOrigin[1], item.spanX, item.spanY); 2061 } 2062 } 2063 } 2064 } 2065 2066 public void onDragExit(DragSource source, int x, int y, int xOffset, 2067 int yOffset, DragView dragView, Object dragInfo) { 2068 mWasSpringLoadedOnDragExit = mShrinkState == ShrinkState.SPRING_LOADED; 2069 if (mDragTargetLayout != null) { 2070 mDragTargetLayout.onDragExit(); 2071 } 2072 if (!mIsPageMoving) { 2073 hideOutlines(); 2074 } 2075 if (mShrinkState == ShrinkState.SPRING_LOADED) { 2076 mLauncher.exitSpringLoadedDragMode(); 2077 } 2078 clearAllHovers(); 2079 } 2080 2081 @Override 2082 public void getHitRect(Rect outRect) { 2083 // We want the workspace to have the whole area of the display (it will find the correct 2084 // cell layout to drop to in the existing drag/drop logic. 2085 final Display d = mLauncher.getWindowManager().getDefaultDisplay(); 2086 outRect.set(0, 0, d.getWidth(), d.getHeight()); 2087 } 2088 2089 /** 2090 * Add the item specified by dragInfo to the given layout. 2091 * @return true if successful 2092 */ 2093 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2094 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2095 onDropExternal(-1, -1, (ItemInfo) dragInfo, (CellLayout) layout, false); 2096 return true; 2097 } 2098 mLauncher.showOutOfSpaceMessage(); 2099 return false; 2100 } 2101 2102 /** 2103 * Drop an item that didn't originate on one of the workspace screens. 2104 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2105 * come from another app altogether. 2106 * 2107 * NOTE: This can also be called when we are outside of a drag event, when we want 2108 * to add an item to one of the workspace screens. 2109 */ 2110 private void onDropExternal(int x, int y, Object dragInfo, 2111 CellLayout cellLayout, boolean insertAtFirst) { 2112 int screen = indexOfChild(cellLayout); 2113 if (dragInfo instanceof PendingAddItemInfo) { 2114 PendingAddItemInfo info = (PendingAddItemInfo) dragInfo; 2115 // When dragging and dropping from customization tray, we deal with creating 2116 // widgets/shortcuts/folders in a slightly different way 2117 // Only set touchXY if you are supporting spring loaded adding of items 2118 int[] touchXY = new int[2]; 2119 touchXY[0] = x; 2120 touchXY[1] = y; 2121 switch (info.itemType) { 2122 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 2123 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) info, screen, touchXY); 2124 break; 2125 case LauncherSettings.Favorites.ITEM_TYPE_LIVE_FOLDER: 2126 mLauncher.addLiveFolderFromDrop(info.componentName, screen, touchXY); 2127 break; 2128 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2129 mLauncher.processShortcutFromDrop(info.componentName, screen, touchXY); 2130 break; 2131 default: 2132 throw new IllegalStateException("Unknown item type: " + info.itemType); 2133 } 2134 cellLayout.onDragExit(); 2135 } else { 2136 // This is for other drag/drop cases, like dragging from All Apps 2137 ItemInfo info = (ItemInfo) dragInfo; 2138 View view = null; 2139 2140 switch (info.itemType) { 2141 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 2142 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2143 if (info.container == NO_ID && info instanceof ApplicationInfo) { 2144 // Came from all apps -- make a copy 2145 info = new ShortcutInfo((ApplicationInfo) info); 2146 } 2147 view = mLauncher.createShortcut(R.layout.application, cellLayout, 2148 (ShortcutInfo) info); 2149 break; 2150 case LauncherSettings.Favorites.ITEM_TYPE_USER_FOLDER: 2151 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, 2152 cellLayout, (UserFolderInfo) info, mIconCache); 2153 break; 2154 default: 2155 throw new IllegalStateException("Unknown item type: " + info.itemType); 2156 } 2157 2158 mTargetCell = new int[2]; 2159 if (x != -1 && y != -1) { 2160 // when dragging and dropping, just find the closest free spot 2161 cellLayout.findNearestVacantArea(x, y, 1, 1, mTargetCell); 2162 } else { 2163 cellLayout.findCellForSpan(mTargetCell, 1, 1); 2164 } 2165 addInScreen(view, indexOfChild(cellLayout), mTargetCell[0], 2166 mTargetCell[1], info.spanX, info.spanY, insertAtFirst); 2167 boolean animateDrop = !mWasSpringLoadedOnDragExit; 2168 cellLayout.onDropChild(view, animateDrop); 2169 cellLayout.animateDrop(); 2170 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2171 2172 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 2173 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2174 lp.cellX, lp.cellY); 2175 } 2176 } 2177 2178 /** 2179 * Return the current {@link CellLayout}, correctly picking the destination 2180 * screen while a scroll is in progress. 2181 */ 2182 private CellLayout getCurrentDropLayout() { 2183 // if we're currently small, use findMatchingPageForDragOver instead 2184 if (mIsSmall) return null; 2185 int index = mScroller.isFinished() ? mCurrentPage : mNextPage; 2186 return (CellLayout) getChildAt(index); 2187 } 2188 2189 /** 2190 * Return the current CellInfo describing our current drag; this method exists 2191 * so that Launcher can sync this object with the correct info when the activity is created/ 2192 * destroyed 2193 * 2194 */ 2195 public CellLayout.CellInfo getDragInfo() { 2196 return mDragInfo; 2197 } 2198 2199 /** 2200 * Calculate the nearest cell where the given object would be dropped. 2201 */ 2202 private int[] findNearestVacantArea(int pixelX, int pixelY, 2203 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 2204 2205 int localPixelX = pixelX - (layout.getLeft() - mScrollX); 2206 int localPixelY = pixelY - (layout.getTop() - mScrollY); 2207 2208 // Find the best target drop location 2209 return layout.findNearestVacantArea( 2210 localPixelX, localPixelY, spanX, spanY, ignoreView, recycle); 2211 } 2212 2213 void setLauncher(Launcher launcher) { 2214 mLauncher = launcher; 2215 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 2216 2217 mCustomizationDrawer = mLauncher.findViewById(R.id.customization_drawer); 2218 if (mCustomizationDrawer != null) { 2219 mCustomizationDrawerContent = 2220 mCustomizationDrawer.findViewById(com.android.internal.R.id.tabcontent); 2221 } 2222 } 2223 2224 public void setDragController(DragController dragController) { 2225 mDragController = dragController; 2226 } 2227 2228 public void onDropCompleted(View target, boolean success) { 2229 if (success) { 2230 if (target != this && mDragInfo != null) { 2231 final CellLayout cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 2232 cellLayout.removeView(mDragInfo.cell); 2233 if (mDragInfo.cell instanceof DropTarget) { 2234 mDragController.removeDropTarget((DropTarget)mDragInfo.cell); 2235 } 2236 // final Object tag = mDragInfo.cell.getTag(); 2237 } 2238 } else if (mDragInfo != null) { 2239 boolean animateDrop = !mWasSpringLoadedOnDragExit; 2240 ((CellLayout) getChildAt(mDragInfo.screen)).onDropChild(mDragInfo.cell, animateDrop); 2241 } 2242 2243 mDragOutline = null; 2244 mDragInfo = null; 2245 } 2246 2247 @Override 2248 public void onDragViewVisible() { 2249 ((View) mDragInfo.cell).setVisibility(View.GONE); 2250 } 2251 2252 public boolean isDropEnabled() { 2253 return true; 2254 } 2255 2256 @Override 2257 protected void onRestoreInstanceState(Parcelable state) { 2258 super.onRestoreInstanceState(state); 2259 Launcher.setScreen(mCurrentPage); 2260 } 2261 2262 @Override 2263 public void scrollLeft() { 2264 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2265 super.scrollLeft(); 2266 } 2267 } 2268 2269 @Override 2270 public void scrollRight() { 2271 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2272 super.scrollRight(); 2273 } 2274 } 2275 2276 @Override 2277 public void onEnterScrollArea(int direction) { 2278 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2279 mInScrollArea = true; 2280 mPendingScrollDirection = direction; 2281 2282 final int page = mCurrentPage + (direction == DragController.SCROLL_LEFT ? -1 : 1); 2283 final CellLayout layout = (CellLayout) getChildAt(page); 2284 2285 if (layout != null) { 2286 layout.setIsDragOverlapping(true); 2287 2288 if (mDragTargetLayout != null) { 2289 mDragTargetLayout.onDragExit(); 2290 mDragTargetLayout = null; 2291 } 2292 } 2293 } 2294 } 2295 2296 private void clearAllHovers() { 2297 final int childCount = getChildCount(); 2298 for (int i = 0; i < childCount; i++) { 2299 ((CellLayout) getChildAt(i)).setIsDragOverlapping(false); 2300 } 2301 mSpringLoadedDragController.onDragExit(); 2302 } 2303 2304 @Override 2305 public void onExitScrollArea() { 2306 if (mInScrollArea) { 2307 mInScrollArea = false; 2308 mPendingScrollDirection = DragController.SCROLL_NONE; 2309 clearAllHovers(); 2310 } 2311 } 2312 2313 public Folder getFolderForTag(Object tag) { 2314 final int screenCount = getChildCount(); 2315 for (int screen = 0; screen < screenCount; screen++) { 2316 CellLayout currentScreen = ((CellLayout) getChildAt(screen)); 2317 int count = currentScreen.getChildCount(); 2318 for (int i = 0; i < count; i++) { 2319 View child = currentScreen.getChildAt(i); 2320 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 2321 if (lp.cellHSpan == 4 && lp.cellVSpan == 4 && child instanceof Folder) { 2322 Folder f = (Folder) child; 2323 if (f.getInfo() == tag && f.getInfo().opened) { 2324 return f; 2325 } 2326 } 2327 } 2328 } 2329 return null; 2330 } 2331 2332 public View getViewForTag(Object tag) { 2333 int screenCount = getChildCount(); 2334 for (int screen = 0; screen < screenCount; screen++) { 2335 CellLayout currentScreen = ((CellLayout) getChildAt(screen)); 2336 int count = currentScreen.getChildCount(); 2337 for (int i = 0; i < count; i++) { 2338 View child = currentScreen.getChildAt(i); 2339 if (child.getTag() == tag) { 2340 return child; 2341 } 2342 } 2343 } 2344 return null; 2345 } 2346 2347 2348 void removeItems(final ArrayList<ApplicationInfo> apps) { 2349 final int screenCount = getChildCount(); 2350 final PackageManager manager = getContext().getPackageManager(); 2351 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 2352 2353 final HashSet<String> packageNames = new HashSet<String>(); 2354 final int appCount = apps.size(); 2355 for (int i = 0; i < appCount; i++) { 2356 packageNames.add(apps.get(i).componentName.getPackageName()); 2357 } 2358 2359 for (int i = 0; i < screenCount; i++) { 2360 final CellLayout layout = (CellLayout) getChildAt(i); 2361 2362 // Avoid ANRs by treating each screen separately 2363 post(new Runnable() { 2364 public void run() { 2365 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 2366 childrenToRemove.clear(); 2367 2368 int childCount = layout.getChildCount(); 2369 for (int j = 0; j < childCount; j++) { 2370 final View view = layout.getChildAt(j); 2371 Object tag = view.getTag(); 2372 2373 if (tag instanceof ShortcutInfo) { 2374 final ShortcutInfo info = (ShortcutInfo) tag; 2375 final Intent intent = info.intent; 2376 final ComponentName name = intent.getComponent(); 2377 2378 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 2379 for (String packageName: packageNames) { 2380 if (packageName.equals(name.getPackageName())) { 2381 LauncherModel.deleteItemFromDatabase(mLauncher, info); 2382 childrenToRemove.add(view); 2383 } 2384 } 2385 } 2386 } else if (tag instanceof UserFolderInfo) { 2387 final UserFolderInfo info = (UserFolderInfo) tag; 2388 final ArrayList<ShortcutInfo> contents = info.contents; 2389 final ArrayList<ShortcutInfo> toRemove = new ArrayList<ShortcutInfo>(1); 2390 final int contentsCount = contents.size(); 2391 boolean removedFromFolder = false; 2392 2393 for (int k = 0; k < contentsCount; k++) { 2394 final ShortcutInfo appInfo = contents.get(k); 2395 final Intent intent = appInfo.intent; 2396 final ComponentName name = intent.getComponent(); 2397 2398 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 2399 for (String packageName: packageNames) { 2400 if (packageName.equals(name.getPackageName())) { 2401 toRemove.add(appInfo); 2402 LauncherModel.deleteItemFromDatabase(mLauncher, appInfo); 2403 removedFromFolder = true; 2404 } 2405 } 2406 } 2407 } 2408 2409 contents.removeAll(toRemove); 2410 if (removedFromFolder) { 2411 final Folder folder = getOpenFolder(); 2412 if (folder != null) 2413 folder.notifyDataSetChanged(); 2414 } 2415 } else if (tag instanceof LiveFolderInfo) { 2416 final LiveFolderInfo info = (LiveFolderInfo) tag; 2417 final Uri uri = info.uri; 2418 final ProviderInfo providerInfo = manager.resolveContentProvider( 2419 uri.getAuthority(), 0); 2420 2421 if (providerInfo != null) { 2422 for (String packageName: packageNames) { 2423 if (packageName.equals(providerInfo.packageName)) { 2424 LauncherModel.deleteItemFromDatabase(mLauncher, info); 2425 childrenToRemove.add(view); 2426 } 2427 } 2428 } 2429 } else if (tag instanceof LauncherAppWidgetInfo) { 2430 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 2431 final AppWidgetProviderInfo provider = 2432 widgets.getAppWidgetInfo(info.appWidgetId); 2433 if (provider != null) { 2434 for (String packageName: packageNames) { 2435 if (packageName.equals(provider.provider.getPackageName())) { 2436 LauncherModel.deleteItemFromDatabase(mLauncher, info); 2437 childrenToRemove.add(view); 2438 } 2439 } 2440 } 2441 } 2442 } 2443 2444 childCount = childrenToRemove.size(); 2445 for (int j = 0; j < childCount; j++) { 2446 View child = childrenToRemove.get(j); 2447 layout.removeViewInLayout(child); 2448 if (child instanceof DropTarget) { 2449 mDragController.removeDropTarget((DropTarget)child); 2450 } 2451 } 2452 2453 if (childCount > 0) { 2454 layout.requestLayout(); 2455 layout.invalidate(); 2456 } 2457 } 2458 }); 2459 } 2460 } 2461 2462 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 2463 final int screenCount = getChildCount(); 2464 for (int i = 0; i < screenCount; i++) { 2465 final CellLayout layout = (CellLayout) getChildAt(i); 2466 int childCount = layout.getChildCount(); 2467 for (int j = 0; j < childCount; j++) { 2468 final View view = layout.getChildAt(j); 2469 Object tag = view.getTag(); 2470 if (tag instanceof ShortcutInfo) { 2471 ShortcutInfo info = (ShortcutInfo)tag; 2472 // We need to check for ACTION_MAIN otherwise getComponent() might 2473 // return null for some shortcuts (for instance, for shortcuts to 2474 // web pages.) 2475 final Intent intent = info.intent; 2476 final ComponentName name = intent.getComponent(); 2477 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 2478 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 2479 final int appCount = apps.size(); 2480 for (int k = 0; k < appCount; k++) { 2481 ApplicationInfo app = apps.get(k); 2482 if (app.componentName.equals(name)) { 2483 info.setIcon(mIconCache.getIcon(info.intent)); 2484 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 2485 new FastBitmapDrawable(info.getIcon(mIconCache)), 2486 null, null); 2487 } 2488 } 2489 } 2490 } 2491 } 2492 } 2493 } 2494 2495 void moveToDefaultScreen(boolean animate) { 2496 if (mIsSmall || mIsInUnshrinkAnimation) { 2497 mLauncher.showWorkspace(animate, (CellLayout)getChildAt(mDefaultPage)); 2498 } else if (animate) { 2499 snapToPage(mDefaultPage); 2500 } else { 2501 setCurrentPage(mDefaultPage); 2502 } 2503 getChildAt(mDefaultPage).requestFocus(); 2504 } 2505 2506 void setIndicators(Drawable previous, Drawable next) { 2507 mPreviousIndicator = previous; 2508 mNextIndicator = next; 2509 previous.setLevel(mCurrentPage); 2510 next.setLevel(mCurrentPage); 2511 } 2512 2513 @Override 2514 public void syncPages() { 2515 } 2516 2517 @Override 2518 public void syncPageItems(int page) { 2519 } 2520 2521} 2522